diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-06 18:59:40 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-06 18:59:40 +0100 |
| commit | 105cf3c8c6264dce4bcdab877feb8037bc4109b1 (patch) | |
| tree | d44c56b22038b15bb44c7104c3cfc8a6bc4eefff /drivers/pci | |
| parent | Merge tag 'xfs-4.16-merge-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux (diff) | |
| parent | Merge branch 'pci/spdx' into next (diff) | |
| download | linux-105cf3c8c6264dce4bcdab877feb8037bc4109b1.tar.xz linux-105cf3c8c6264dce4bcdab877feb8037bc4109b1.zip | |
Merge tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
- skip AER driver error recovery callbacks for correctable errors
reported via ACPI APEI, as we already do for errors reported via the
native path (Tyler Baicar)
- fix DPC shared interrupt handling (Alex Williamson)
- print full DPC interrupt number (Keith Busch)
- enable DPC only if AER is available (Keith Busch)
- simplify DPC code (Bjorn Helgaas)
- calculate ASPM L1 substate parameter instead of hardcoding it (Bjorn
Helgaas)
- enable Latency Tolerance Reporting for ASPM L1 substates (Bjorn
Helgaas)
- move ASPM internal interfaces out of public header (Bjorn Helgaas)
- allow hot-removal of VGA devices (Mika Westerberg)
- speed up unplug and shutdown by assuming Thunderbolt controllers
don't support Command Completed events (Lukas Wunner)
- add AtomicOps support for GPU and Infiniband drivers (Felix Kuehling,
Jay Cornwall)
- expose "ari_enabled" in sysfs to help NIC naming (Stuart Hayes)
- clean up PCI DMA interface usage (Christoph Hellwig)
- remove PCI pool API (replaced with DMA pool) (Romain Perier)
- deprecate pci_get_bus_and_slot(), which assumed PCI domain 0 (Sinan
Kaya)
- move DT PCI code from drivers/of/ to drivers/pci/ (Rob Herring)
- add PCI-specific wrappers for dev_info(), etc (Frederick Lawler)
- remove warnings on sysfs mmap failure (Bjorn Helgaas)
- quiet ROM validation messages (Alex Deucher)
- remove redundant memory alloc failure messages (Markus Elfring)
- fill in types for compile-time VGA and other I/O port resources
(Bjorn Helgaas)
- make "pci=pcie_scan_all" work for Root Ports as well as Downstream
Ports to help AmigaOne X1000 (Bjorn Helgaas)
- add SPDX tags to all PCI files (Bjorn Helgaas)
- quirk Marvell 9128 DMA aliases (Alex Williamson)
- quirk broken INTx disable on Ceton InfiniTV4 (Bjorn Helgaas)
- fix CONFIG_PCI=n build by adding dummy pci_irqd_intx_xlate() (Niklas
Cassel)
- use DMA API to get MSI address for DesignWare IP (Niklas Cassel)
- fix endpoint-mode DMA mask configuration (Kishon Vijay Abraham I)
- fix ARTPEC-6 incorrect IS_ERR() usage (Wei Yongjun)
- add support for ARTPEC-7 SoC (Niklas Cassel)
- add endpoint-mode support for ARTPEC (Niklas Cassel)
- add Cadence PCIe host and endpoint controller driver (Cyrille
Pitchen)
- handle multiple INTx status bits being set in dra7xx (Vignesh R)
- translate dra7xx hwirq range to fix INTD handling (Vignesh R)
- remove deprecated Exynos PHY initialization code (Jaehoon Chung)
- fix MSI erratum workaround for HiSilicon Hip06/Hip07 (Dongdong Liu)
- fix NULL pointer dereference in iProc BCMA driver (Ray Jui)
- fix Keystone interrupt-controller-node lookup (Johan Hovold)
- constify qcom driver structures (Julia Lawall)
- rework Tegra config space mapping to increase space available for
endpoints (Vidya Sagar)
- simplify Tegra driver by using bus->sysdata (Manikanta Maddireddy)
- remove PCI_REASSIGN_ALL_BUS usage on Tegra (Manikanta Maddireddy)
- add support for Global Fabric Manager Server (GFMS) event to
Microsemi Switchtec switch driver (Logan Gunthorpe)
- add IDs for Switchtec PSX 24xG3 and PSX 48xG3 (Kelvin Cao)
* tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (140 commits)
PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller
dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe endpoint controller
PCI: endpoint: Fix EPF device name to support multi-function devices
PCI: endpoint: Add the function number as argument to EPC ops
PCI: cadence: Add host driver for Cadence PCIe controller
dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe host controller
PCI: Add vendor ID for Cadence
PCI: Add generic function to probe PCI host controllers
PCI: generic: fix missing call of pci_free_resource_list()
PCI: OF: Add generic function to parse and allocate PCI resources
PCI: Regroup all PCI related entries into drivers/pci/Makefile
PCI/DPC: Reformat DPC register definitions
PCI/DPC: Add and use DPC Status register field definitions
PCI/DPC: Squash dpc_rp_pio_get_info() into dpc_process_rp_pio_error()
PCI/DPC: Remove unnecessary RP PIO register structs
PCI/DPC: Push dpc->rp_pio_status assignment into dpc_rp_pio_get_info()
PCI/DPC: Squash dpc_rp_pio_print_error() into dpc_rp_pio_get_info()
PCI/DPC: Make RP PIO log size check more generic
PCI/DPC: Rename local "status" to "dpc_status"
PCI/DPC: Squash dpc_rp_pio_print_tlp_header() into dpc_rp_pio_print_error()
...
Diffstat (limited to 'drivers/pci')
162 files changed, 3785 insertions, 2552 deletions
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig index bda151788f3f..34b56a8f8480 100644 --- a/drivers/pci/Kconfig +++ b/drivers/pci/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # PCI configuration # @@ -125,6 +126,7 @@ config PCI_PASID config PCI_LABEL def_bool y if (DMI || ACPI) + depends on PCI select NLS config PCI_HYPERV @@ -135,6 +137,7 @@ config PCI_HYPERV PCI devices from a PCI backend to support PCI driver domains. source "drivers/pci/hotplug/Kconfig" +source "drivers/pci/cadence/Kconfig" source "drivers/pci/dwc/Kconfig" source "drivers/pci/host/Kconfig" source "drivers/pci/endpoint/Kconfig" diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile index c7819b973df7..941970936840 100644 --- a/drivers/pci/Makefile +++ b/drivers/pci/Makefile @@ -3,12 +3,15 @@ # Makefile for the PCI bus specific drivers. # -obj-y += access.o bus.o probe.o host-bridge.o remove.o pci.o \ +obj-$(CONFIG_PCI) += access.o bus.o probe.o host-bridge.o remove.o pci.o \ pci-driver.o search.o pci-sysfs.o rom.o setup-res.o \ irq.o vpd.o setup-bus.o vc.o mmap.o setup-irq.o +ifdef CONFIG_PCI obj-$(CONFIG_PROC_FS) += proc.o obj-$(CONFIG_SYSFS) += slot.o +obj-$(CONFIG_OF) += of.o +endif obj-$(CONFIG_PCI_QUIRKS) += quirks.o @@ -44,10 +47,15 @@ obj-$(CONFIG_PCI_ECAM) += ecam.o obj-$(CONFIG_XEN_PCIDEV_FRONTEND) += xen-pcifront.o -obj-$(CONFIG_OF) += of.o - ccflags-$(CONFIG_PCI_DEBUG) := -DDEBUG # PCI host controller drivers obj-y += host/ obj-y += switch/ + +obj-$(CONFIG_PCI_ENDPOINT) += endpoint/ + +# Endpoint library must be initialized before its users +obj-$(CONFIG_PCIE_CADENCE) += cadence/ +# pcie-hisi.o quirks are needed even without CONFIG_PCIE_DW +obj-y += dwc/ diff --git a/drivers/pci/access.c b/drivers/pci/access.c index 913d6722ece9..5e9a9822d9d4 100644 --- a/drivers/pci/access.c +++ b/drivers/pci/access.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 #include <linux/delay.h> #include <linux/pci.h> #include <linux/module.h> @@ -333,8 +334,7 @@ static size_t pci_vpd_size(struct pci_dev *dev, size_t old_size) (tag == PCI_VPD_LTIN_RW_DATA)) { if (pci_read_vpd(dev, off+1, 2, &header[1]) != 2) { - dev_warn(&dev->dev, - "invalid large VPD tag %02x size at offset %zu", + pci_warn(dev, "invalid large VPD tag %02x size at offset %zu", tag, off + 1); return 0; } @@ -354,8 +354,7 @@ static size_t pci_vpd_size(struct pci_dev *dev, size_t old_size) if ((tag != PCI_VPD_LTIN_ID_STRING) && (tag != PCI_VPD_LTIN_RO_DATA) && (tag != PCI_VPD_LTIN_RW_DATA)) { - dev_warn(&dev->dev, - "invalid %s VPD tag %02x at offset %zu", + pci_warn(dev, "invalid %s VPD tag %02x at offset %zu", (header[0] & PCI_VPD_LRDT) ? "large" : "short", tag, off); return 0; @@ -402,7 +401,7 @@ static int pci_vpd_wait(struct pci_dev *dev) max_sleep *= 2; } - dev_warn(&dev->dev, "VPD access failed. This is likely a firmware bug on this device. Contact the card vendor for a firmware update\n"); + pci_warn(dev, "VPD access failed. This is likely a firmware bug on this device. Contact the card vendor for a firmware update\n"); return -ETIMEDOUT; } diff --git a/drivers/pci/ats.c b/drivers/pci/ats.c index ad8ddbbbf245..6ad80a1fd5a7 100644 --- a/drivers/pci/ats.c +++ b/drivers/pci/ats.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * drivers/pci/ats.c * diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index bc56cf19afd3..737d1c52f002 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * drivers/pci/bus.c * @@ -289,7 +290,7 @@ bool pci_bus_clip_resource(struct pci_dev *dev, int idx) res->end = end; res->flags &= ~IORESOURCE_UNSET; orig_res.flags &= ~IORESOURCE_UNSET; - dev_printk(KERN_DEBUG, &dev->dev, "%pR clipped to %pR\n", + pci_printk(KERN_DEBUG, dev, "%pR clipped to %pR\n", &orig_res, res); return true; @@ -325,7 +326,7 @@ void pci_bus_add_device(struct pci_dev *dev) dev->match_driver = true; retval = device_attach(&dev->dev); if (retval < 0 && retval != -EPROBE_DEFER) { - dev_warn(&dev->dev, "device attach failed (%d)\n", retval); + pci_warn(dev, "device attach failed (%d)\n", retval); pci_proc_detach_device(dev); pci_remove_sysfs_dev_files(dev); return; diff --git a/drivers/pci/cadence/Kconfig b/drivers/pci/cadence/Kconfig new file mode 100644 index 000000000000..e6824cb56c16 --- /dev/null +++ b/drivers/pci/cadence/Kconfig @@ -0,0 +1,27 @@ +menu "Cadence PCIe controllers support" + +config PCIE_CADENCE + bool + +config PCIE_CADENCE_HOST + bool "Cadence PCIe host controller" + depends on OF + depends on PCI + select IRQ_DOMAIN + select PCIE_CADENCE + help + Say Y here if you want to support the Cadence PCIe controller in host + mode. This PCIe controller may be embedded into many different vendors + SoCs. + +config PCIE_CADENCE_EP + bool "Cadence PCIe endpoint controller" + depends on OF + depends on PCI_ENDPOINT + select PCIE_CADENCE + help + Say Y here if you want to support the Cadence PCIe controller in + endpoint mode. This PCIe controller may be embedded into many + different vendors SoCs. + +endmenu diff --git a/drivers/pci/cadence/Makefile b/drivers/pci/cadence/Makefile new file mode 100644 index 000000000000..719392b97998 --- /dev/null +++ b/drivers/pci/cadence/Makefile @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_PCIE_CADENCE) += pcie-cadence.o +obj-$(CONFIG_PCIE_CADENCE_HOST) += pcie-cadence-host.o +obj-$(CONFIG_PCIE_CADENCE_EP) += pcie-cadence-ep.o diff --git a/drivers/pci/cadence/pcie-cadence-ep.c b/drivers/pci/cadence/pcie-cadence-ep.c new file mode 100644 index 000000000000..3c3a97743453 --- /dev/null +++ b/drivers/pci/cadence/pcie-cadence-ep.c @@ -0,0 +1,542 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2017 Cadence +// Cadence PCIe endpoint controller driver. +// Author: Cyrille Pitchen <cyrille.pitchen@free-electrons.com> + +#include <linux/delay.h> +#include <linux/kernel.h> +#include <linux/of.h> +#include <linux/pci-epc.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/sizes.h> + +#include "pcie-cadence.h" + +#define CDNS_PCIE_EP_MIN_APERTURE 128 /* 128 bytes */ +#define CDNS_PCIE_EP_IRQ_PCI_ADDR_NONE 0x1 +#define CDNS_PCIE_EP_IRQ_PCI_ADDR_LEGACY 0x3 + +/** + * struct cdns_pcie_ep - private data for this PCIe endpoint controller driver + * @pcie: Cadence PCIe controller + * @max_regions: maximum number of regions supported by hardware + * @ob_region_map: bitmask of mapped outbound regions + * @ob_addr: base addresses in the AXI bus where the outbound regions start + * @irq_phys_addr: base address on the AXI bus where the MSI/legacy IRQ + * dedicated outbound regions is mapped. + * @irq_cpu_addr: base address in the CPU space where a write access triggers + * the sending of a memory write (MSI) / normal message (legacy + * IRQ) TLP through the PCIe bus. + * @irq_pci_addr: used to save the current mapping of the MSI/legacy IRQ + * dedicated outbound region. + * @irq_pci_fn: the latest PCI function that has updated the mapping of + * the MSI/legacy IRQ dedicated outbound region. + * @irq_pending: bitmask of asserted legacy IRQs. + */ +struct cdns_pcie_ep { + struct cdns_pcie pcie; + u32 max_regions; + unsigned long ob_region_map; + phys_addr_t *ob_addr; + phys_addr_t irq_phys_addr; + void __iomem *irq_cpu_addr; + u64 irq_pci_addr; + u8 irq_pci_fn; + u8 irq_pending; +}; + +static int cdns_pcie_ep_write_header(struct pci_epc *epc, u8 fn, + struct pci_epf_header *hdr) +{ + struct cdns_pcie_ep *ep = epc_get_drvdata(epc); + struct cdns_pcie *pcie = &ep->pcie; + + cdns_pcie_ep_fn_writew(pcie, fn, PCI_DEVICE_ID, hdr->deviceid); + cdns_pcie_ep_fn_writeb(pcie, fn, PCI_REVISION_ID, hdr->revid); + cdns_pcie_ep_fn_writeb(pcie, fn, PCI_CLASS_PROG, hdr->progif_code); + cdns_pcie_ep_fn_writew(pcie, fn, PCI_CLASS_DEVICE, + hdr->subclass_code | hdr->baseclass_code << 8); + cdns_pcie_ep_fn_writeb(pcie, fn, PCI_CACHE_LINE_SIZE, + hdr->cache_line_size); + cdns_pcie_ep_fn_writew(pcie, fn, PCI_SUBSYSTEM_ID, hdr->subsys_id); + cdns_pcie_ep_fn_writeb(pcie, fn, PCI_INTERRUPT_PIN, hdr->interrupt_pin); + + /* + * Vendor ID can only be modified from function 0, all other functions + * use the same vendor ID as function 0. + */ + if (fn == 0) { + /* Update the vendor IDs. */ + u32 id = CDNS_PCIE_LM_ID_VENDOR(hdr->vendorid) | + CDNS_PCIE_LM_ID_SUBSYS(hdr->subsys_vendor_id); + + cdns_pcie_writel(pcie, CDNS_PCIE_LM_ID, id); + } + + return 0; +} + +static int cdns_pcie_ep_set_bar(struct pci_epc *epc, u8 fn, enum pci_barno bar, + dma_addr_t bar_phys, size_t size, int flags) +{ + struct cdns_pcie_ep *ep = epc_get_drvdata(epc); + struct cdns_pcie *pcie = &ep->pcie; + u32 addr0, addr1, reg, cfg, b, aperture, ctrl; + u64 sz; + + /* BAR size is 2^(aperture + 7) */ + sz = max_t(size_t, size, CDNS_PCIE_EP_MIN_APERTURE); + /* + * roundup_pow_of_two() returns an unsigned long, which is not suited + * for 64bit values. + */ + sz = 1ULL << fls64(sz - 1); + aperture = ilog2(sz) - 7; /* 128B -> 0, 256B -> 1, 512B -> 2, ... */ + + if ((flags & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_IO) { + ctrl = CDNS_PCIE_LM_BAR_CFG_CTRL_IO_32BITS; + } else { + bool is_prefetch = !!(flags & PCI_BASE_ADDRESS_MEM_PREFETCH); + bool is_64bits = sz > SZ_2G; + + if (is_64bits && (bar & 1)) + return -EINVAL; + + if (is_64bits && is_prefetch) + ctrl = CDNS_PCIE_LM_BAR_CFG_CTRL_PREFETCH_MEM_64BITS; + else if (is_prefetch) + ctrl = CDNS_PCIE_LM_BAR_CFG_CTRL_PREFETCH_MEM_32BITS; + else if (is_64bits) + ctrl = CDNS_PCIE_LM_BAR_CFG_CTRL_MEM_64BITS; + else + ctrl = CDNS_PCIE_LM_BAR_CFG_CTRL_MEM_32BITS; + } + + addr0 = lower_32_bits(bar_phys); + addr1 = upper_32_bits(bar_phys); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_IB_EP_FUNC_BAR_ADDR0(fn, bar), + addr0); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_IB_EP_FUNC_BAR_ADDR1(fn, bar), + addr1); + + if (bar < BAR_4) { + reg = CDNS_PCIE_LM_EP_FUNC_BAR_CFG0(fn); + b = bar; + } else { + reg = CDNS_PCIE_LM_EP_FUNC_BAR_CFG1(fn); + b = bar - BAR_4; + } + + cfg = cdns_pcie_readl(pcie, reg); + cfg &= ~(CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_APERTURE_MASK(b) | + CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_CTRL_MASK(b)); + cfg |= (CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_APERTURE(b, aperture) | + CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_CTRL(b, ctrl)); + cdns_pcie_writel(pcie, reg, cfg); + + return 0; +} + +static void cdns_pcie_ep_clear_bar(struct pci_epc *epc, u8 fn, + enum pci_barno bar) +{ + struct cdns_pcie_ep *ep = epc_get_drvdata(epc); + struct cdns_pcie *pcie = &ep->pcie; + u32 reg, cfg, b, ctrl; + + if (bar < BAR_4) { + reg = CDNS_PCIE_LM_EP_FUNC_BAR_CFG0(fn); + b = bar; + } else { + reg = CDNS_PCIE_LM_EP_FUNC_BAR_CFG1(fn); + b = bar - BAR_4; + } + + ctrl = CDNS_PCIE_LM_BAR_CFG_CTRL_DISABLED; + cfg = cdns_pcie_readl(pcie, reg); + cfg &= ~(CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_APERTURE_MASK(b) | + CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_CTRL_MASK(b)); + cfg |= CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_CTRL(b, ctrl); + cdns_pcie_writel(pcie, reg, cfg); + + cdns_pcie_writel(pcie, CDNS_PCIE_AT_IB_EP_FUNC_BAR_ADDR0(fn, bar), 0); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_IB_EP_FUNC_BAR_ADDR1(fn, bar), 0); +} + +static int cdns_pcie_ep_map_addr(struct pci_epc *epc, u8 fn, phys_addr_t addr, + u64 pci_addr, size_t size) +{ + struct cdns_pcie_ep *ep = epc_get_drvdata(epc); + struct cdns_pcie *pcie = &ep->pcie; + u32 r; + + r = find_first_zero_bit(&ep->ob_region_map, + sizeof(ep->ob_region_map) * BITS_PER_LONG); + if (r >= ep->max_regions - 1) { + dev_err(&epc->dev, "no free outbound region\n"); + return -EINVAL; + } + + cdns_pcie_set_outbound_region(pcie, fn, r, false, addr, pci_addr, size); + + set_bit(r, &ep->ob_region_map); + ep->ob_addr[r] = addr; + + return 0; +} + +static void cdns_pcie_ep_unmap_addr(struct pci_epc *epc, u8 fn, + phys_addr_t addr) +{ + struct cdns_pcie_ep *ep = epc_get_drvdata(epc); + struct cdns_pcie *pcie = &ep->pcie; + u32 r; + + for (r = 0; r < ep->max_regions - 1; r++) + if (ep->ob_addr[r] == addr) + break; + + if (r == ep->max_regions - 1) + return; + + cdns_pcie_reset_outbound_region(pcie, r); + + ep->ob_addr[r] = 0; + clear_bit(r, &ep->ob_region_map); +} + +static int cdns_pcie_ep_set_msi(struct pci_epc *epc, u8 fn, u8 mmc) +{ + struct cdns_pcie_ep *ep = epc_get_drvdata(epc); + struct cdns_pcie *pcie = &ep->pcie; + u32 cap = CDNS_PCIE_EP_FUNC_MSI_CAP_OFFSET; + u16 flags; + + /* + * Set the Multiple Message Capable bitfield into the Message Control + * register. + */ + flags = cdns_pcie_ep_fn_readw(pcie, fn, cap + PCI_MSI_FLAGS); + flags = (flags & ~PCI_MSI_FLAGS_QMASK) | (mmc << 1); + flags |= PCI_MSI_FLAGS_64BIT; + flags &= ~PCI_MSI_FLAGS_MASKBIT; + cdns_pcie_ep_fn_writew(pcie, fn, cap + PCI_MSI_FLAGS, flags); + + return 0; +} + +static int cdns_pcie_ep_get_msi(struct pci_epc *epc, u8 fn) +{ + struct cdns_pcie_ep *ep = epc_get_drvdata(epc); + struct cdns_pcie *pcie = &ep->pcie; + u32 cap = CDNS_PCIE_EP_FUNC_MSI_CAP_OFFSET; + u16 flags, mmc, mme; + + /* Validate that the MSI feature is actually enabled. */ + flags = cdns_pcie_ep_fn_readw(pcie, fn, cap + PCI_MSI_FLAGS); + if (!(flags & PCI_MSI_FLAGS_ENABLE)) + return -EINVAL; + + /* + * Get the Multiple Message Enable bitfield from the Message Control + * register. + */ + mmc = (flags & PCI_MSI_FLAGS_QMASK) >> 1; + mme = (flags & PCI_MSI_FLAGS_QSIZE) >> 4; + + return mme; +} + +static void cdns_pcie_ep_assert_intx(struct cdns_pcie_ep *ep, u8 fn, + u8 intx, bool is_asserted) +{ + struct cdns_pcie *pcie = &ep->pcie; + u32 r = ep->max_regions - 1; + u32 offset; + u16 status; + u8 msg_code; + + intx &= 3; + + /* Set the outbound region if needed. */ + if (unlikely(ep->irq_pci_addr != CDNS_PCIE_EP_IRQ_PCI_ADDR_LEGACY || + ep->irq_pci_fn != fn)) { + /* Last region was reserved for IRQ writes. */ + cdns_pcie_set_outbound_region_for_normal_msg(pcie, fn, r, + ep->irq_phys_addr); + ep->irq_pci_addr = CDNS_PCIE_EP_IRQ_PCI_ADDR_LEGACY; + ep->irq_pci_fn = fn; + } + + if (is_asserted) { + ep->irq_pending |= BIT(intx); + msg_code = MSG_CODE_ASSERT_INTA + intx; + } else { + ep->irq_pending &= ~BIT(intx); + msg_code = MSG_CODE_DEASSERT_INTA + intx; + } + + status = cdns_pcie_ep_fn_readw(pcie, fn, PCI_STATUS); + if (((status & PCI_STATUS_INTERRUPT) != 0) ^ (ep->irq_pending != 0)) { + status ^= PCI_STATUS_INTERRUPT; + cdns_pcie_ep_fn_writew(pcie, fn, PCI_STATUS, status); + } + + offset = CDNS_PCIE_NORMAL_MSG_ROUTING(MSG_ROUTING_LOCAL) | + CDNS_PCIE_NORMAL_MSG_CODE(msg_code) | + CDNS_PCIE_MSG_NO_DATA; + writel(0, ep->irq_cpu_addr + offset); +} + +static int cdns_pcie_ep_send_legacy_irq(struct cdns_pcie_ep *ep, u8 fn, u8 intx) +{ + u16 cmd; + + cmd = cdns_pcie_ep_fn_readw(&ep->pcie, fn, PCI_COMMAND); + if (cmd & PCI_COMMAND_INTX_DISABLE) + return -EINVAL; + + cdns_pcie_ep_assert_intx(ep, fn, intx, true); + /* + * The mdelay() value was taken from dra7xx_pcie_raise_legacy_irq() + * from drivers/pci/dwc/pci-dra7xx.c + */ + mdelay(1); + cdns_pcie_ep_assert_intx(ep, fn, intx, false); + return 0; +} + +static int cdns_pcie_ep_send_msi_irq(struct cdns_pcie_ep *ep, u8 fn, + u8 interrupt_num) +{ + struct cdns_pcie *pcie = &ep->pcie; + u32 cap = CDNS_PCIE_EP_FUNC_MSI_CAP_OFFSET; + u16 flags, mme, data, data_mask; + u8 msi_count; + u64 pci_addr, pci_addr_mask = 0xff; + + /* Check whether the MSI feature has been enabled by the PCI host. */ + flags = cdns_pcie_ep_fn_readw(pcie, fn, cap + PCI_MSI_FLAGS); + if (!(flags & PCI_MSI_FLAGS_ENABLE)) + return -EINVAL; + + /* Get the number of enabled MSIs */ + mme = (flags & PCI_MSI_FLAGS_QSIZE) >> 4; + msi_count = 1 << mme; + if (!interrupt_num || interrupt_num > msi_count) + return -EINVAL; + + /* Compute the data value to be written. */ + data_mask = msi_count - 1; + data = cdns_pcie_ep_fn_readw(pcie, fn, cap + PCI_MSI_DATA_64); + data = (data & ~data_mask) | ((interrupt_num - 1) & data_mask); + + /* Get the PCI address where to write the data into. */ + pci_addr = cdns_pcie_ep_fn_readl(pcie, fn, cap + PCI_MSI_ADDRESS_HI); + pci_addr <<= 32; + pci_addr |= cdns_pcie_ep_fn_readl(pcie, fn, cap + PCI_MSI_ADDRESS_LO); + pci_addr &= GENMASK_ULL(63, 2); + + /* Set the outbound region if needed. */ + if (unlikely(ep->irq_pci_addr != (pci_addr & ~pci_addr_mask) || + ep->irq_pci_fn != fn)) { + /* Last region was reserved for IRQ writes. */ + cdns_pcie_set_outbound_region(pcie, fn, ep->max_regions - 1, + false, + ep->irq_phys_addr, + pci_addr & ~pci_addr_mask, + pci_addr_mask + 1); + ep->irq_pci_addr = (pci_addr & ~pci_addr_mask); + ep->irq_pci_fn = fn; + } + writew(data, ep->irq_cpu_addr + (pci_addr & pci_addr_mask)); + + return 0; +} + +static int cdns_pcie_ep_raise_irq(struct pci_epc *epc, u8 fn, + enum pci_epc_irq_type type, u8 interrupt_num) +{ + struct cdns_pcie_ep *ep = epc_get_drvdata(epc); + + switch (type) { + case PCI_EPC_IRQ_LEGACY: + return cdns_pcie_ep_send_legacy_irq(ep, fn, 0); + + case PCI_EPC_IRQ_MSI: + return cdns_pcie_ep_send_msi_irq(ep, fn, interrupt_num); + + default: + break; + } + + return -EINVAL; +} + +static int cdns_pcie_ep_start(struct pci_epc *epc) +{ + struct cdns_pcie_ep *ep = epc_get_drvdata(epc); + struct cdns_pcie *pcie = &ep->pcie; + struct pci_epf *epf; + u32 cfg; + + /* + * BIT(0) is hardwired to 1, hence function 0 is always enabled + * and can't be disabled anyway. + */ + cfg = BIT(0); + list_for_each_entry(epf, &epc->pci_epf, list) + cfg |= BIT(epf->func_no); + cdns_pcie_writel(pcie, CDNS_PCIE_LM_EP_FUNC_CFG, cfg); + + /* + * The PCIe links are automatically established by the controller + * once for all at powerup: the software can neither start nor stop + * those links later at runtime. + * + * Then we only have to notify the EP core that our links are already + * established. However we don't call directly pci_epc_linkup() because + * we've already locked the epc->lock. + */ + list_for_each_entry(epf, &epc->pci_epf, list) + pci_epf_linkup(epf); + + return 0; +} + +static const struct pci_epc_ops cdns_pcie_epc_ops = { + .write_header = cdns_pcie_ep_write_header, + .set_bar = cdns_pcie_ep_set_bar, + .clear_bar = cdns_pcie_ep_clear_bar, + .map_addr = cdns_pcie_ep_map_addr, + .unmap_addr = cdns_pcie_ep_unmap_addr, + .set_msi = cdns_pcie_ep_set_msi, + .get_msi = cdns_pcie_ep_get_msi, + .raise_irq = cdns_pcie_ep_raise_irq, + .start = cdns_pcie_ep_start, +}; + +static const struct of_device_id cdns_pcie_ep_of_match[] = { + { .compatible = "cdns,cdns-pcie-ep" }, + + { }, +}; + +static int cdns_pcie_ep_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct cdns_pcie_ep *ep; + struct cdns_pcie *pcie; + struct pci_epc *epc; + struct resource *res; + int ret; + + ep = devm_kzalloc(dev, sizeof(*ep), GFP_KERNEL); + if (!ep) + return -ENOMEM; + + pcie = &ep->pcie; + pcie->is_rc = false; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "reg"); + pcie->reg_base = devm_ioremap_resource(dev, res); + if (IS_ERR(pcie->reg_base)) { + dev_err(dev, "missing \"reg\"\n"); + return PTR_ERR(pcie->reg_base); + } + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mem"); + if (!res) { + dev_err(dev, "missing \"mem\"\n"); + return -EINVAL; + } + pcie->mem_res = res; + + ret = of_property_read_u32(np, "cdns,max-outbound-regions", + &ep->max_regions); + if (ret < 0) { + dev_err(dev, "missing \"cdns,max-outbound-regions\"\n"); + return ret; + } + ep->ob_addr = devm_kzalloc(dev, ep->max_regions * sizeof(*ep->ob_addr), + GFP_KERNEL); + if (!ep->ob_addr) + return -ENOMEM; + + pm_runtime_enable(dev); + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + dev_err(dev, "pm_runtime_get_sync() failed\n"); + goto err_get_sync; + } + + /* Disable all but function 0 (anyway BIT(0) is hardwired to 1). */ + cdns_pcie_writel(pcie, CDNS_PCIE_LM_EP_FUNC_CFG, BIT(0)); + + epc = devm_pci_epc_create(dev, &cdns_pcie_epc_ops); + if (IS_ERR(epc)) { + dev_err(dev, "failed to create epc device\n"); + ret = PTR_ERR(epc); + goto err_init; + } + + epc_set_drvdata(epc, ep); + + if (of_property_read_u8(np, "max-functions", &epc->max_functions) < 0) + epc->max_functions = 1; + + ret = pci_epc_mem_init(epc, pcie->mem_res->start, + resource_size(pcie->mem_res)); + if (ret < 0) { + dev_err(dev, "failed to initialize the memory space\n"); + goto err_init; + } + + ep->irq_cpu_addr = pci_epc_mem_alloc_addr(epc, &ep->irq_phys_addr, + SZ_128K); + if (!ep->irq_cpu_addr) { + dev_err(dev, "failed to reserve memory space for MSI\n"); + ret = -ENOMEM; + goto free_epc_mem; + } + ep->irq_pci_addr = CDNS_PCIE_EP_IRQ_PCI_ADDR_NONE; + + return 0; + + free_epc_mem: + pci_epc_mem_exit(epc); + + err_init: + pm_runtime_put_sync(dev); + + err_get_sync: + pm_runtime_disable(dev); + + return ret; +} + +static void cdns_pcie_ep_shutdown(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + int ret; + + ret = pm_runtime_put_sync(dev); + if (ret < 0) + dev_dbg(dev, "pm_runtime_put_sync failed\n"); + + pm_runtime_disable(dev); + + /* The PCIe controller can't be disabled. */ +} + +static struct platform_driver cdns_pcie_ep_driver = { + .driver = { + .name = "cdns-pcie-ep", + .of_match_table = cdns_pcie_ep_of_match, + }, + .probe = cdns_pcie_ep_probe, + .shutdown = cdns_pcie_ep_shutdown, +}; +builtin_platform_driver(cdns_pcie_ep_driver); diff --git a/drivers/pci/cadence/pcie-cadence-host.c b/drivers/pci/cadence/pcie-cadence-host.c new file mode 100644 index 000000000000..a4ebbd37b553 --- /dev/null +++ b/drivers/pci/cadence/pcie-cadence-host.c @@ -0,0 +1,336 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2017 Cadence +// Cadence PCIe host controller driver. +// Author: Cyrille Pitchen <cyrille.pitchen@free-electrons.com> + +#include <linux/kernel.h> +#include <linux/of_address.h> +#include <linux/of_pci.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> + +#include "pcie-cadence.h" + +/** + * struct cdns_pcie_rc - private data for this PCIe Root Complex driver + * @pcie: Cadence PCIe controller + * @dev: pointer to PCIe device + * @cfg_res: start/end offsets in the physical system memory to map PCI + * configuration space accesses + * @bus_range: first/last buses behind the PCIe host controller + * @cfg_base: IO mapped window to access the PCI configuration space of a + * single function at a time + * @max_regions: maximum number of regions supported by the hardware + * @no_bar_nbits: Number of bits to keep for inbound (PCIe -> CPU) address + * translation (nbits sets into the "no BAR match" register) + * @vendor_id: PCI vendor ID + * @device_id: PCI device ID + */ +struct cdns_pcie_rc { + struct cdns_pcie pcie; + struct device *dev; + struct resource *cfg_res; + struct resource *bus_range; + void __iomem *cfg_base; + u32 max_regions; + u32 no_bar_nbits; + u16 vendor_id; + u16 device_id; +}; + +static void __iomem *cdns_pci_map_bus(struct pci_bus *bus, unsigned int devfn, + int where) +{ + struct pci_host_bridge *bridge = pci_find_host_bridge(bus); + struct cdns_pcie_rc *rc = pci_host_bridge_priv(bridge); + struct cdns_pcie *pcie = &rc->pcie; + unsigned int busn = bus->number; + u32 addr0, desc0; + + if (busn == rc->bus_range->start) { + /* + * Only the root port (devfn == 0) is connected to this bus. + * All other PCI devices are behind some bridge hence on another + * bus. + */ + if (devfn) + return NULL; + + return pcie->reg_base + (where & 0xfff); + } + + /* Update Output registers for AXI region 0. */ + addr0 = CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_NBITS(12) | + CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_DEVFN(devfn) | + CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_BUS(busn); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_PCI_ADDR0(0), addr0); + + /* Configuration Type 0 or Type 1 access. */ + desc0 = CDNS_PCIE_AT_OB_REGION_DESC0_HARDCODED_RID | + CDNS_PCIE_AT_OB_REGION_DESC0_DEVFN(0); + /* + * The bus number was already set once for all in desc1 by + * cdns_pcie_host_init_address_translation(). + */ + if (busn == rc->bus_range->start + 1) + desc0 |= CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_CONF_TYPE0; + else + desc0 |= CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_CONF_TYPE1; + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_DESC0(0), desc0); + + return rc->cfg_base + (where & 0xfff); +} + +static struct pci_ops cdns_pcie_host_ops = { + .map_bus = cdns_pci_map_bus, + .read = pci_generic_config_read, + .write = pci_generic_config_write, +}; + +static const struct of_device_id cdns_pcie_host_of_match[] = { + { .compatible = "cdns,cdns-pcie-host" }, + + { }, +}; + +static int cdns_pcie_host_init_root_port(struct cdns_pcie_rc *rc) +{ + struct cdns_pcie *pcie = &rc->pcie; + u32 value, ctrl; + + /* + * Set the root complex BAR configuration register: + * - disable both BAR0 and BAR1. + * - enable Prefetchable Memory Base and Limit registers in type 1 + * config space (64 bits). + * - enable IO Base and Limit registers in type 1 config + * space (32 bits). + */ + ctrl = CDNS_PCIE_LM_BAR_CFG_CTRL_DISABLED; + value = CDNS_PCIE_LM_RC_BAR_CFG_BAR0_CTRL(ctrl) | + CDNS_PCIE_LM_RC_BAR_CFG_BAR1_CTRL(ctrl) | + CDNS_PCIE_LM_RC_BAR_CFG_PREFETCH_MEM_ENABLE | + CDNS_PCIE_LM_RC_BAR_CFG_PREFETCH_MEM_64BITS | + CDNS_PCIE_LM_RC_BAR_CFG_IO_ENABLE | + CDNS_PCIE_LM_RC_BAR_CFG_IO_32BITS; + cdns_pcie_writel(pcie, CDNS_PCIE_LM_RC_BAR_CFG, value); + + /* Set root port configuration space */ + if (rc->vendor_id != 0xffff) + cdns_pcie_rp_writew(pcie, PCI_VENDOR_ID, rc->vendor_id); + if (rc->device_id != 0xffff) + cdns_pcie_rp_writew(pcie, PCI_DEVICE_ID, rc->device_id); + + cdns_pcie_rp_writeb(pcie, PCI_CLASS_REVISION, 0); + cdns_pcie_rp_writeb(pcie, PCI_CLASS_PROG, 0); + cdns_pcie_rp_writew(pcie, PCI_CLASS_DEVICE, PCI_CLASS_BRIDGE_PCI); + + return 0; +} + +static int cdns_pcie_host_init_address_translation(struct cdns_pcie_rc *rc) +{ + struct cdns_pcie *pcie = &rc->pcie; + struct resource *cfg_res = rc->cfg_res; + struct resource *mem_res = pcie->mem_res; + struct resource *bus_range = rc->bus_range; + struct device *dev = rc->dev; + struct device_node *np = dev->of_node; + struct of_pci_range_parser parser; + struct of_pci_range range; + u32 addr0, addr1, desc1; + u64 cpu_addr; + int r, err; + + /* + * Reserve region 0 for PCI configure space accesses: + * OB_REGION_PCI_ADDR0 and OB_REGION_DESC0 are updated dynamically by + * cdns_pci_map_bus(), other region registers are set here once for all. + */ + addr1 = 0; /* Should be programmed to zero. */ + desc1 = CDNS_PCIE_AT_OB_REGION_DESC1_BUS(bus_range->start); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_PCI_ADDR1(0), addr1); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_DESC1(0), desc1); + + cpu_addr = cfg_res->start - mem_res->start; + addr0 = CDNS_PCIE_AT_OB_REGION_CPU_ADDR0_NBITS(12) | + (lower_32_bits(cpu_addr) & GENMASK(31, 8)); + addr1 = upper_32_bits(cpu_addr); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_CPU_ADDR0(0), addr0); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_CPU_ADDR1(0), addr1); + + err = of_pci_range_parser_init(&parser, np); + if (err) + return err; + + r = 1; + for_each_of_pci_range(&parser, &range) { + bool is_io; + + if (r >= rc->max_regions) + break; + + if ((range.flags & IORESOURCE_TYPE_BITS) == IORESOURCE_MEM) + is_io = false; + else if ((range.flags & IORESOURCE_TYPE_BITS) == IORESOURCE_IO) + is_io = true; + else + continue; + + cdns_pcie_set_outbound_region(pcie, 0, r, is_io, + range.cpu_addr, + range.pci_addr, + range.size); + r++; + } + + /* + * Set Root Port no BAR match Inbound Translation registers: + * needed for MSI and DMA. + * Root Port BAR0 and BAR1 are disabled, hence no need to set their + * inbound translation registers. + */ + addr0 = CDNS_PCIE_AT_IB_RP_BAR_ADDR0_NBITS(rc->no_bar_nbits); + addr1 = 0; + cdns_pcie_writel(pcie, CDNS_PCIE_AT_IB_RP_BAR_ADDR0(RP_NO_BAR), addr0); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_IB_RP_BAR_ADDR1(RP_NO_BAR), addr1); + + return 0; +} + +static int cdns_pcie_host_init(struct device *dev, + struct list_head *resources, + struct cdns_pcie_rc *rc) +{ + struct resource *bus_range = NULL; + int err; + + /* Parse our PCI ranges and request their resources */ + err = pci_parse_request_of_pci_ranges(dev, resources, &bus_range); + if (err) + return err; + + rc->bus_range = bus_range; + rc->pcie.bus = bus_range->start; + + err = cdns_pcie_host_init_root_port(rc); + if (err) + goto err_out; + + err = cdns_pcie_host_init_address_translation(rc); + if (err) + goto err_out; + + return 0; + + err_out: + pci_free_resource_list(resources); + return err; +} + +static int cdns_pcie_host_probe(struct platform_device *pdev) +{ + const char *type; + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct pci_host_bridge *bridge; + struct list_head resources; + struct cdns_pcie_rc *rc; + struct cdns_pcie *pcie; + struct resource *res; + int ret; + + bridge = devm_pci_alloc_host_bridge(dev, sizeof(*rc)); + if (!bridge) + return -ENOMEM; + + rc = pci_host_bridge_priv(bridge); + rc->dev = dev; + + pcie = &rc->pcie; + pcie->is_rc = true; + + rc->max_regions = 32; + of_property_read_u32(np, "cdns,max-outbound-regions", &rc->max_regions); + + rc->no_bar_nbits = 32; + of_property_read_u32(np, "cdns,no-bar-match-nbits", &rc->no_bar_nbits); + + rc->vendor_id = 0xffff; + of_property_read_u16(np, "vendor-id", &rc->vendor_id); + + rc->device_id = 0xffff; + of_property_read_u16(np, "device-id", &rc->device_id); + + type = of_get_property(np, "device_type", NULL); + if (!type || strcmp(type, "pci")) { + dev_err(dev, "invalid \"device_type\" %s\n", type); + return -EINVAL; + } + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "reg"); + pcie->reg_base = devm_ioremap_resource(dev, res); + if (IS_ERR(pcie->reg_base)) { + dev_err(dev, "missing \"reg\"\n"); + return PTR_ERR(pcie->reg_base); + } + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cfg"); + rc->cfg_base = devm_pci_remap_cfg_resource(dev, res); + if (IS_ERR(rc->cfg_base)) { + dev_err(dev, "missing \"cfg\"\n"); + return PTR_ERR(rc->cfg_base); + } + rc->cfg_res = res; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mem"); + if (!res) { + dev_err(dev, "missing \"mem\"\n"); + return -EINVAL; + } + pcie->mem_res = res; + + pm_runtime_enable(dev); + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + dev_err(dev, "pm_runtime_get_sync() failed\n"); + goto err_get_sync; + } + + ret = cdns_pcie_host_init(dev, &resources, rc); + if (ret) + goto err_init; + + list_splice_init(&resources, &bridge->windows); + bridge->dev.parent = dev; + bridge->busnr = pcie->bus; + bridge->ops = &cdns_pcie_host_ops; + bridge->map_irq = of_irq_parse_and_map_pci; + bridge->swizzle_irq = pci_common_swizzle; + + ret = pci_host_probe(bridge); + if (ret < 0) + goto err_host_probe; + + return 0; + + err_host_probe: + pci_free_resource_list(&resources); + + err_init: + pm_runtime_put_sync(dev); + + err_get_sync: + pm_runtime_disable(dev); + + return ret; +} + +static struct platform_driver cdns_pcie_host_driver = { + .driver = { + .name = "cdns-pcie-host", + .of_match_table = cdns_pcie_host_of_match, + }, + .probe = cdns_pcie_host_probe, +}; +builtin_platform_driver(cdns_pcie_host_driver); diff --git a/drivers/pci/cadence/pcie-cadence.c b/drivers/pci/cadence/pcie-cadence.c new file mode 100644 index 000000000000..138d113eb45d --- /dev/null +++ b/drivers/pci/cadence/pcie-cadence.c @@ -0,0 +1,126 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2017 Cadence +// Cadence PCIe controller driver. +// Author: Cyrille Pitchen <cyrille.pitchen@free-electrons.com> + +#include <linux/kernel.h> + +#include "pcie-cadence.h" + +void cdns_pcie_set_outbound_region(struct cdns_pcie *pcie, u8 fn, + u32 r, bool is_io, + u64 cpu_addr, u64 pci_addr, size_t size) +{ + /* + * roundup_pow_of_two() returns an unsigned long, which is not suited + * for 64bit values. + */ + u64 sz = 1ULL << fls64(size - 1); + int nbits = ilog2(sz); + u32 addr0, addr1, desc0, desc1; + + if (nbits < 8) + nbits = 8; + + /* Set the PCI address */ + addr0 = CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_NBITS(nbits) | + (lower_32_bits(pci_addr) & GENMASK(31, 8)); + addr1 = upper_32_bits(pci_addr); + + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_PCI_ADDR0(r), addr0); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_PCI_ADDR1(r), addr1); + + /* Set the PCIe header descriptor */ + if (is_io) + desc0 = CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_IO; + else + desc0 = CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_MEM; + desc1 = 0; + + /* + * Whatever Bit [23] is set or not inside DESC0 register of the outbound + * PCIe descriptor, the PCI function number must be set into + * Bits [26:24] of DESC0 anyway. + * + * In Root Complex mode, the function number is always 0 but in Endpoint + * mode, the PCIe controller may support more than one function. This + * function number needs to be set properly into the outbound PCIe + * descriptor. + * + * Besides, setting Bit [23] is mandatory when in Root Complex mode: + * then the driver must provide the bus, resp. device, number in + * Bits [7:0] of DESC1, resp. Bits[31:27] of DESC0. Like the function + * number, the device number is always 0 in Root Complex mode. + * + * However when in Endpoint mode, we can clear Bit [23] of DESC0, hence + * the PCIe controller will use the captured values for the bus and + * device numbers. + */ + if (pcie->is_rc) { + /* The device and function numbers are always 0. */ + desc0 |= CDNS_PCIE_AT_OB_REGION_DESC0_HARDCODED_RID | + CDNS_PCIE_AT_OB_REGION_DESC0_DEVFN(0); + desc1 |= CDNS_PCIE_AT_OB_REGION_DESC1_BUS(pcie->bus); + } else { + /* + * Use captured values for bus and device numbers but still + * need to set the function number. + */ + desc0 |= CDNS_PCIE_AT_OB_REGION_DESC0_DEVFN(fn); + } + + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_DESC0(r), desc0); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_DESC1(r), desc1); + + /* Set the CPU address */ + cpu_addr -= pcie->mem_res->start; + addr0 = CDNS_PCIE_AT_OB_REGION_CPU_ADDR0_NBITS(nbits) | + (lower_32_bits(cpu_addr) & GENMASK(31, 8)); + addr1 = upper_32_bits(cpu_addr); + + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_CPU_ADDR0(r), addr0); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_CPU_ADDR1(r), addr1); +} + +void cdns_pcie_set_outbound_region_for_normal_msg(struct cdns_pcie *pcie, u8 fn, + u32 r, u64 cpu_addr) +{ + u32 addr0, addr1, desc0, desc1; + + desc0 = CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_NORMAL_MSG; + desc1 = 0; + + /* See cdns_pcie_set_outbound_region() comments above. */ + if (pcie->is_rc) { + desc0 |= CDNS_PCIE_AT_OB_REGION_DESC0_HARDCODED_RID | + CDNS_PCIE_AT_OB_REGION_DESC0_DEVFN(0); + desc1 |= CDNS_PCIE_AT_OB_REGION_DESC1_BUS(pcie->bus); + } else { + desc0 |= CDNS_PCIE_AT_OB_REGION_DESC0_DEVFN(fn); + } + + /* Set the CPU address */ + cpu_addr -= pcie->mem_res->start; + addr0 = CDNS_PCIE_AT_OB_REGION_CPU_ADDR0_NBITS(17) | + (lower_32_bits(cpu_addr) & GENMASK(31, 8)); + addr1 = upper_32_bits(cpu_addr); + + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_PCI_ADDR0(r), 0); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_PCI_ADDR1(r), 0); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_DESC0(r), desc0); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_DESC1(r), desc1); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_CPU_ADDR0(r), addr0); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_CPU_ADDR1(r), addr1); +} + +void cdns_pcie_reset_outbound_region(struct cdns_pcie *pcie, u32 r) +{ + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_PCI_ADDR0(r), 0); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_PCI_ADDR1(r), 0); + + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_DESC0(r), 0); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_DESC1(r), 0); + + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_CPU_ADDR0(r), 0); + cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_CPU_ADDR1(r), 0); +} diff --git a/drivers/pci/cadence/pcie-cadence.h b/drivers/pci/cadence/pcie-cadence.h new file mode 100644 index 000000000000..4bb27333b05c --- /dev/null +++ b/drivers/pci/cadence/pcie-cadence.h @@ -0,0 +1,311 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2017 Cadence +// Cadence PCIe controller driver. +// Author: Cyrille Pitchen <cyrille.pitchen@free-electrons.com> + +#ifndef _PCIE_CADENCE_H +#define _PCIE_CADENCE_H + +#include <linux/kernel.h> +#include <linux/pci.h> + +/* + * Local Management Registers + */ +#define CDNS_PCIE_LM_BASE 0x00100000 + +/* Vendor ID Register */ +#define CDNS_PCIE_LM_ID (CDNS_PCIE_LM_BASE + 0x0044) +#define CDNS_PCIE_LM_ID_VENDOR_MASK GENMASK(15, 0) +#define CDNS_PCIE_LM_ID_VENDOR_SHIFT 0 +#define CDNS_PCIE_LM_ID_VENDOR(vid) \ + (((vid) << CDNS_PCIE_LM_ID_VENDOR_SHIFT) & CDNS_PCIE_LM_ID_VENDOR_MASK) +#define CDNS_PCIE_LM_ID_SUBSYS_MASK GENMASK(31, 16) +#define CDNS_PCIE_LM_ID_SUBSYS_SHIFT 16 +#define CDNS_PCIE_LM_ID_SUBSYS(sub) \ + (((sub) << CDNS_PCIE_LM_ID_SUBSYS_SHIFT) & CDNS_PCIE_LM_ID_SUBSYS_MASK) + +/* Root Port Requestor ID Register */ +#define CDNS_PCIE_LM_RP_RID (CDNS_PCIE_LM_BASE + 0x0228) +#define CDNS_PCIE_LM_RP_RID_MASK GENMASK(15, 0) +#define CDNS_PCIE_LM_RP_RID_SHIFT 0 +#define CDNS_PCIE_LM_RP_RID_(rid) \ + (((rid) << CDNS_PCIE_LM_RP_RID_SHIFT) & CDNS_PCIE_LM_RP_RID_MASK) + +/* Endpoint Bus and Device Number Register */ +#define CDNS_PCIE_LM_EP_ID (CDNS_PCIE_LM_BASE + 0x022c) +#define CDNS_PCIE_LM_EP_ID_DEV_MASK GENMASK(4, 0) +#define CDNS_PCIE_LM_EP_ID_DEV_SHIFT 0 +#define CDNS_PCIE_LM_EP_ID_BUS_MASK GENMASK(15, 8) +#define CDNS_PCIE_LM_EP_ID_BUS_SHIFT 8 + +/* Endpoint Function f BAR b Configuration Registers */ +#define CDNS_PCIE_LM_EP_FUNC_BAR_CFG0(fn) \ + (CDNS_PCIE_LM_BASE + 0x0240 + (fn) * 0x0008) +#define CDNS_PCIE_LM_EP_FUNC_BAR_CFG1(fn) \ + (CDNS_PCIE_LM_BASE + 0x0244 + (fn) * 0x0008) +#define CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_APERTURE_MASK(b) \ + (GENMASK(4, 0) << ((b) * 8)) +#define CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_APERTURE(b, a) \ + (((a) << ((b) * 8)) & CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_APERTURE_MASK(b)) +#define CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_CTRL_MASK(b) \ + (GENMASK(7, 5) << ((b) * 8)) +#define CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_CTRL(b, c) \ + (((c) << ((b) * 8 + 5)) & CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_CTRL_MASK(b)) + +/* Endpoint Function Configuration Register */ +#define CDNS_PCIE_LM_EP_FUNC_CFG (CDNS_PCIE_LM_BASE + 0x02c0) + +/* Root Complex BAR Configuration Register */ +#define CDNS_PCIE_LM_RC_BAR_CFG (CDNS_PCIE_LM_BASE + 0x0300) +#define CDNS_PCIE_LM_RC_BAR_CFG_BAR0_APERTURE_MASK GENMASK(5, 0) +#define CDNS_PCIE_LM_RC_BAR_CFG_BAR0_APERTURE(a) \ + (((a) << 0) & CDNS_PCIE_LM_RC_BAR_CFG_BAR0_APERTURE_MASK) +#define CDNS_PCIE_LM_RC_BAR_CFG_BAR0_CTRL_MASK GENMASK(8, 6) +#define CDNS_PCIE_LM_RC_BAR_CFG_BAR0_CTRL(c) \ + (((c) << 6) & CDNS_PCIE_LM_RC_BAR_CFG_BAR0_CTRL_MASK) +#define CDNS_PCIE_LM_RC_BAR_CFG_BAR1_APERTURE_MASK GENMASK(13, 9) +#define CDNS_PCIE_LM_RC_BAR_CFG_BAR1_APERTURE(a) \ + (((a) << 9) & CDNS_PCIE_LM_RC_BAR_CFG_BAR1_APERTURE_MASK) +#define CDNS_PCIE_LM_RC_BAR_CFG_BAR1_CTRL_MASK GENMASK(16, 14) +#define CDNS_PCIE_LM_RC_BAR_CFG_BAR1_CTRL(c) \ + (((c) << 14) & CDNS_PCIE_LM_RC_BAR_CFG_BAR1_CTRL_MASK) +#define CDNS_PCIE_LM_RC_BAR_CFG_PREFETCH_MEM_ENABLE BIT(17) +#define CDNS_PCIE_LM_RC_BAR_CFG_PREFETCH_MEM_32BITS 0 +#define CDNS_PCIE_LM_RC_BAR_CFG_PREFETCH_MEM_64BITS BIT(18) +#define CDNS_PCIE_LM_RC_BAR_CFG_IO_ENABLE BIT(19) +#define CDNS_PCIE_LM_RC_BAR_CFG_IO_16BITS 0 +#define CDNS_PCIE_LM_RC_BAR_CFG_IO_32BITS BIT(20) +#define CDNS_PCIE_LM_RC_BAR_CFG_CHECK_ENABLE BIT(31) + +/* BAR control values applicable to both Endpoint Function and Root Complex */ +#define CDNS_PCIE_LM_BAR_CFG_CTRL_DISABLED 0x0 +#define CDNS_PCIE_LM_BAR_CFG_CTRL_IO_32BITS 0x1 +#define CDNS_PCIE_LM_BAR_CFG_CTRL_MEM_32BITS 0x4 +#define CDNS_PCIE_LM_BAR_CFG_CTRL_PREFETCH_MEM_32BITS 0x5 +#define CDNS_PCIE_LM_BAR_CFG_CTRL_MEM_64BITS 0x6 +#define CDNS_PCIE_LM_BAR_CFG_CTRL_PREFETCH_MEM_64BITS 0x7 + + +/* + * Endpoint Function Registers (PCI configuration space for endpoint functions) + */ +#define CDNS_PCIE_EP_FUNC_BASE(fn) (((fn) << 12) & GENMASK(19, 12)) + +#define CDNS_PCIE_EP_FUNC_MSI_CAP_OFFSET 0x90 + +/* + * Root Port Registers (PCI configuration space for the root port function) + */ +#define CDNS_PCIE_RP_BASE 0x00200000 + + +/* + * Address Translation Registers + */ +#define CDNS_PCIE_AT_BASE 0x00400000 + +/* Region r Outbound AXI to PCIe Address Translation Register 0 */ +#define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0(r) \ + (CDNS_PCIE_AT_BASE + 0x0000 + ((r) & 0x1f) * 0x0020) +#define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_NBITS_MASK GENMASK(5, 0) +#define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_NBITS(nbits) \ + (((nbits) - 1) & CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_NBITS_MASK) +#define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_DEVFN_MASK GENMASK(19, 12) +#define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_DEVFN(devfn) \ + (((devfn) << 12) & CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_DEVFN_MASK) +#define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_BUS_MASK GENMASK(27, 20) +#define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_BUS(bus) \ + (((bus) << 20) & CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_BUS_MASK) + +/* Region r Outbound AXI to PCIe Address Translation Register 1 */ +#define CDNS_PCIE_AT_OB_REGION_PCI_ADDR1(r) \ + (CDNS_PCIE_AT_BASE + 0x0004 + ((r) & 0x1f) * 0x0020) + +/* Region r Outbound PCIe Descriptor Register 0 */ +#define CDNS_PCIE_AT_OB_REGION_DESC0(r) \ + (CDNS_PCIE_AT_BASE + 0x0008 + ((r) & 0x1f) * 0x0020) +#define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_MASK GENMASK(3, 0) +#define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_MEM 0x2 +#define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_IO 0x6 +#define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_CONF_TYPE0 0xa +#define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_CONF_TYPE1 0xb +#define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_NORMAL_MSG 0xc +#define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_VENDOR_MSG 0xd +/* Bit 23 MUST be set in RC mode. */ +#define CDNS_PCIE_AT_OB_REGION_DESC0_HARDCODED_RID BIT(23) +#define CDNS_PCIE_AT_OB_REGION_DESC0_DEVFN_MASK GENMASK(31, 24) +#define CDNS_PCIE_AT_OB_REGION_DESC0_DEVFN(devfn) \ + (((devfn) << 24) & CDNS_PCIE_AT_OB_REGION_DESC0_DEVFN_MASK) + +/* Region r Outbound PCIe Descriptor Register 1 */ +#define CDNS_PCIE_AT_OB_REGION_DESC1(r) \ + (CDNS_PCIE_AT_BASE + 0x000c + ((r) & 0x1f) * 0x0020) +#define CDNS_PCIE_AT_OB_REGION_DESC1_BUS_MASK GENMASK(7, 0) +#define CDNS_PCIE_AT_OB_REGION_DESC1_BUS(bus) \ + ((bus) & CDNS_PCIE_AT_OB_REGION_DESC1_BUS_MASK) + +/* Region r AXI Region Base Address Register 0 */ +#define CDNS_PCIE_AT_OB_REGION_CPU_ADDR0(r) \ + (CDNS_PCIE_AT_BASE + 0x0018 + ((r) & 0x1f) * 0x0020) +#define CDNS_PCIE_AT_OB_REGION_CPU_ADDR0_NBITS_MASK GENMASK(5, 0) +#define CDNS_PCIE_AT_OB_REGION_CPU_ADDR0_NBITS(nbits) \ + (((nbits) - 1) & CDNS_PCIE_AT_OB_REGION_CPU_ADDR0_NBITS_MASK) + +/* Region r AXI Region Base Address Register 1 */ +#define CDNS_PCIE_AT_OB_REGION_CPU_ADDR1(r) \ + (CDNS_PCIE_AT_BASE + 0x001c + ((r) & 0x1f) * 0x0020) + +/* Root Port BAR Inbound PCIe to AXI Address Translation Register */ +#define CDNS_PCIE_AT_IB_RP_BAR_ADDR0(bar) \ + (CDNS_PCIE_AT_BASE + 0x0800 + (bar) * 0x0008) +#define CDNS_PCIE_AT_IB_RP_BAR_ADDR0_NBITS_MASK GENMASK(5, 0) +#define CDNS_PCIE_AT_IB_RP_BAR_ADDR0_NBITS(nbits) \ + (((nbits) - 1) & CDNS_PCIE_AT_IB_RP_BAR_ADDR0_NBITS_MASK) +#define CDNS_PCIE_AT_IB_RP_BAR_ADDR1(bar) \ + (CDNS_PCIE_AT_BASE + 0x0804 + (bar) * 0x0008) + +enum cdns_pcie_rp_bar { + RP_BAR0, + RP_BAR1, + RP_NO_BAR +}; + +/* Endpoint Function BAR Inbound PCIe to AXI Address Translation Register */ +#define CDNS_PCIE_AT_IB_EP_FUNC_BAR_ADDR0(fn, bar) \ + (CDNS_PCIE_AT_BASE + 0x0840 + (fn) * 0x0040 + (bar) * 0x0008) +#define CDNS_PCIE_AT_IB_EP_FUNC_BAR_ADDR1(fn, bar) \ + (CDNS_PCIE_AT_BASE + 0x0844 + (fn) * 0x0040 + (bar) * 0x0008) + +/* Normal/Vendor specific message access: offset inside some outbound region */ +#define CDNS_PCIE_NORMAL_MSG_ROUTING_MASK GENMASK(7, 5) +#define CDNS_PCIE_NORMAL_MSG_ROUTING(route) \ + (((route) << 5) & CDNS_PCIE_NORMAL_MSG_ROUTING_MASK) +#define CDNS_PCIE_NORMAL_MSG_CODE_MASK GENMASK(15, 8) +#define CDNS_PCIE_NORMAL_MSG_CODE(code) \ + (((code) << 8) & CDNS_PCIE_NORMAL_MSG_CODE_MASK) +#define CDNS_PCIE_MSG_NO_DATA BIT(16) + +enum cdns_pcie_msg_code { + MSG_CODE_ASSERT_INTA = 0x20, + MSG_CODE_ASSERT_INTB = 0x21, + MSG_CODE_ASSERT_INTC = 0x22, + MSG_CODE_ASSERT_INTD = 0x23, + MSG_CODE_DEASSERT_INTA = 0x24, + MSG_CODE_DEASSERT_INTB = 0x25, + MSG_CODE_DEASSERT_INTC = 0x26, + MSG_CODE_DEASSERT_INTD = 0x27, +}; + +enum cdns_pcie_msg_routing { + /* Route to Root Complex */ + MSG_ROUTING_TO_RC, + + /* Use Address Routing */ + MSG_ROUTING_BY_ADDR, + + /* Use ID Routing */ + MSG_ROUTING_BY_ID, + + /* Route as Broadcast Message from Root Complex */ + MSG_ROUTING_BCAST, + + /* Local message; terminate at receiver (INTx messages) */ + MSG_ROUTING_LOCAL, + + /* Gather & route to Root Complex (PME_TO_Ack message) */ + MSG_ROUTING_GATHER, +}; + +/** + * struct cdns_pcie - private data for Cadence PCIe controller drivers + * @reg_base: IO mapped register base + * @mem_res: start/end offsets in the physical system memory to map PCI accesses + * @is_rc: tell whether the PCIe controller mode is Root Complex or Endpoint. + * @bus: In Root Complex mode, the bus number + */ +struct cdns_pcie { + void __iomem *reg_base; + struct resource *mem_res; + bool is_rc; + u8 bus; +}; + +/* Register access */ +static inline void cdns_pcie_writeb(struct cdns_pcie *pcie, u32 reg, u8 value) +{ + writeb(value, pcie->reg_base + reg); +} + +static inline void cdns_pcie_writew(struct cdns_pcie *pcie, u32 reg, u16 value) +{ + writew(value, pcie->reg_base + reg); +} + +static inline void cdns_pcie_writel(struct cdns_pcie *pcie, u32 reg, u32 value) +{ + writel(value, pcie->reg_base + reg); +} + +static inline u32 cdns_pcie_readl(struct cdns_pcie *pcie, u32 reg) +{ + return readl(pcie->reg_base + reg); +} + +/* Root Port register access */ +static inline void cdns_pcie_rp_writeb(struct cdns_pcie *pcie, + u32 reg, u8 value) +{ + writeb(value, pcie->reg_base + CDNS_PCIE_RP_BASE + reg); +} + +static inline void cdns_pcie_rp_writew(struct cdns_pcie *pcie, + u32 reg, u16 value) +{ + writew(value, pcie->reg_base + CDNS_PCIE_RP_BASE + reg); +} + +/* Endpoint Function register access */ +static inline void cdns_pcie_ep_fn_writeb(struct cdns_pcie *pcie, u8 fn, + u32 reg, u8 value) +{ + writeb(value, pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg); +} + +static inline void cdns_pcie_ep_fn_writew(struct cdns_pcie *pcie, u8 fn, + u32 reg, u16 value) +{ + writew(value, pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg); +} + +static inline void cdns_pcie_ep_fn_writel(struct cdns_pcie *pcie, u8 fn, + u32 reg, u16 value) +{ + writel(value, pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg); +} + +static inline u8 cdns_pcie_ep_fn_readb(struct cdns_pcie *pcie, u8 fn, u32 reg) +{ + return readb(pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg); +} + +static inline u16 cdns_pcie_ep_fn_readw(struct cdns_pcie *pcie, u8 fn, u32 reg) +{ + return readw(pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg); +} + +static inline u32 cdns_pcie_ep_fn_readl(struct cdns_pcie *pcie, u8 fn, u32 reg) +{ + return readl(pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg); +} + +void cdns_pcie_set_outbound_region(struct cdns_pcie *pcie, u8 fn, + u32 r, bool is_io, + u64 cpu_addr, u64 pci_addr, size_t size); + +void cdns_pcie_set_outbound_region_for_normal_msg(struct cdns_pcie *pcie, u8 fn, + u32 r, u64 cpu_addr); + +void cdns_pcie_reset_outbound_region(struct cdns_pcie *pcie, u32 r); + +#endif /* _PCIE_CADENCE_H */ diff --git a/drivers/pci/dwc/Kconfig b/drivers/pci/dwc/Kconfig index 113e09440f85..0f666b1ce289 100644 --- a/drivers/pci/dwc/Kconfig +++ b/drivers/pci/dwc/Kconfig @@ -1,3 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + menu "DesignWare PCI Core Support" config PCIE_DW @@ -15,39 +17,38 @@ config PCIE_DW_EP select PCIE_DW config PCI_DRA7XX - bool "TI DRA7xx PCIe controller" - depends on SOC_DRA7XX || COMPILE_TEST - depends on (PCI && PCI_MSI_IRQ_DOMAIN) || PCI_ENDPOINT - depends on OF && HAS_IOMEM && TI_PIPE3 - help - Enables support for the PCIe controller in the DRA7xx SoC. There - are two instances of PCIe controller in DRA7xx. This controller can - work either as EP or RC. In order to enable host-specific features - PCI_DRA7XX_HOST must be selected and in order to enable device- - specific features PCI_DRA7XX_EP must be selected. This uses - the DesignWare core. - -if PCI_DRA7XX + bool config PCI_DRA7XX_HOST - bool "PCI DRA7xx Host Mode" - depends on PCI - depends on PCI_MSI_IRQ_DOMAIN + bool "TI DRA7xx PCIe controller Host Mode" + depends on SOC_DRA7XX || COMPILE_TEST + depends on PCI && PCI_MSI_IRQ_DOMAIN + depends on OF && HAS_IOMEM && TI_PIPE3 select PCIE_DW_HOST + select PCI_DRA7XX default y help - Enables support for the PCIe controller in the DRA7xx SoC to work in - host mode. + Enables support for the PCIe controller in the DRA7xx SoC to work in + host mode. There are two instances of PCIe controller in DRA7xx. + This controller can work either as EP or RC. In order to enable + host-specific features PCI_DRA7XX_HOST must be selected and in order + to enable device-specific features PCI_DRA7XX_EP must be selected. + This uses the DesignWare core. config PCI_DRA7XX_EP - bool "PCI DRA7xx Endpoint Mode" + bool "TI DRA7xx PCIe controller Endpoint Mode" + depends on SOC_DRA7XX || COMPILE_TEST depends on PCI_ENDPOINT + depends on OF && HAS_IOMEM && TI_PIPE3 select PCIE_DW_EP + select PCI_DRA7XX help - Enables support for the PCIe controller in the DRA7xx SoC to work in - endpoint mode. - -endif + Enables support for the PCIe controller in the DRA7xx SoC to work in + endpoint mode. There are two instances of PCIe controller in DRA7xx. + This controller can work either as EP or RC. In order to enable + host-specific features PCI_DRA7XX_HOST must be selected and in order + to enable device-specific features PCI_DRA7XX_EP must be selected. + This uses the DesignWare core. config PCIE_DW_PLAT bool "Platform bus based DesignWare PCIe Controller" @@ -149,15 +150,28 @@ config PCIE_ARMADA_8K DesignWare core functions to implement the driver. config PCIE_ARTPEC6 - bool "Axis ARTPEC-6 PCIe controller" - depends on PCI + bool + +config PCIE_ARTPEC6_HOST + bool "Axis ARTPEC-6 PCIe controller Host Mode" depends on MACH_ARTPEC6 - depends on PCI_MSI_IRQ_DOMAIN + depends on PCI && PCI_MSI_IRQ_DOMAIN select PCIEPORTBUS select PCIE_DW_HOST + select PCIE_ARTPEC6 + help + Enables support for the PCIe controller in the ARTPEC-6 SoC to work in + host mode. This uses the DesignWare core. + +config PCIE_ARTPEC6_EP + bool "Axis ARTPEC-6 PCIe controller Endpoint Mode" + depends on MACH_ARTPEC6 + depends on PCI_ENDPOINT + select PCIE_DW_EP + select PCIE_ARTPEC6 help - Say Y here to enable PCIe controller support on Axis ARTPEC-6 - SoCs. This PCIe controller uses the DesignWare core. + Enables support for the PCIe controller in the ARTPEC-6 SoC to work in + endpoint mode. This uses the DesignWare core. config PCIE_KIRIN depends on OF && ARM64 diff --git a/drivers/pci/dwc/Makefile b/drivers/pci/dwc/Makefile index 41ba499c96ee..5d2ce72c7a52 100644 --- a/drivers/pci/dwc/Makefile +++ b/drivers/pci/dwc/Makefile @@ -3,9 +3,7 @@ obj-$(CONFIG_PCIE_DW) += pcie-designware.o obj-$(CONFIG_PCIE_DW_HOST) += pcie-designware-host.o obj-$(CONFIG_PCIE_DW_EP) += pcie-designware-ep.o obj-$(CONFIG_PCIE_DW_PLAT) += pcie-designware-plat.o -ifneq ($(filter y,$(CONFIG_PCI_DRA7XX_HOST) $(CONFIG_PCI_DRA7XX_EP)),) - obj-$(CONFIG_PCI_DRA7XX) += pci-dra7xx.o -endif +obj-$(CONFIG_PCI_DRA7XX) += pci-dra7xx.o obj-$(CONFIG_PCI_EXYNOS) += pci-exynos.o obj-$(CONFIG_PCI_IMX6) += pci-imx6.o obj-$(CONFIG_PCIE_SPEAR13XX) += pcie-spear13xx.o @@ -27,4 +25,6 @@ obj-$(CONFIG_PCIE_HISI_STB) += pcie-histb.o # ARM64 and use internal ifdefs to only build the pieces we need # depending on whether ACPI, the DT driver, or both are enabled. +ifdef CONFIG_PCI obj-$(CONFIG_ARM64) += pcie-hisi.o +endif diff --git a/drivers/pci/dwc/pci-dra7xx.c b/drivers/pci/dwc/pci-dra7xx.c index e77a4ceed74c..ed8558d638e5 100644 --- a/drivers/pci/dwc/pci-dra7xx.c +++ b/drivers/pci/dwc/pci-dra7xx.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * pcie-dra7xx - PCIe controller driver for TI DRA7xx SoCs * * Copyright (C) 2013-2014 Texas Instruments Incorporated - http://www.ti.com * * Authors: Kishon Vijay Abraham I <kishon@ti.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/delay.h> @@ -110,7 +107,7 @@ static inline void dra7xx_pcie_writel(struct dra7xx_pcie *pcie, u32 offset, writel(value, pcie->base + offset); } -static u64 dra7xx_pcie_cpu_addr_fixup(u64 pci_addr) +static u64 dra7xx_pcie_cpu_addr_fixup(struct dw_pcie *pci, u64 pci_addr) { return pci_addr & DRA7XX_CPU_TO_BUS_ADDR; } @@ -226,6 +223,7 @@ static int dra7xx_pcie_intx_map(struct irq_domain *domain, unsigned int irq, static const struct irq_domain_ops intx_domain_ops = { .map = dra7xx_pcie_intx_map, + .xlate = pci_irqd_intx_xlate, }; static int dra7xx_pcie_init_irq_domain(struct pcie_port *pp) @@ -256,7 +254,8 @@ static irqreturn_t dra7xx_pcie_msi_irq_handler(int irq, void *arg) struct dra7xx_pcie *dra7xx = arg; struct dw_pcie *pci = dra7xx->pci; struct pcie_port *pp = &pci->pp; - u32 reg; + unsigned long reg; + u32 virq, bit; reg = dra7xx_pcie_readl(dra7xx, PCIECTRL_DRA7XX_CONF_IRQSTATUS_MSI); @@ -268,8 +267,11 @@ static irqreturn_t dra7xx_pcie_msi_irq_handler(int irq, void *arg) case INTB: case INTC: case INTD: - generic_handle_irq(irq_find_mapping(dra7xx->irq_domain, - ffs(reg))); + for_each_set_bit(bit, ®, PCI_NUM_INTX) { + virq = irq_find_mapping(dra7xx->irq_domain, bit); + if (virq) + generic_handle_irq(virq); + } break; } @@ -337,15 +339,6 @@ static irqreturn_t dra7xx_pcie_irq_handler(int irq, void *arg) return IRQ_HANDLED; } -static void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar) -{ - u32 reg; - - reg = PCI_BASE_ADDRESS_0 + (4 * bar); - dw_pcie_writel_dbi2(pci, reg, 0x0); - dw_pcie_writel_dbi(pci, reg, 0x0); -} - static void dra7xx_pcie_ep_init(struct dw_pcie_ep *ep) { struct dw_pcie *pci = to_dw_pcie_from_ep(ep); @@ -375,7 +368,7 @@ static void dra7xx_pcie_raise_msi_irq(struct dra7xx_pcie *dra7xx, dra7xx_pcie_writel(dra7xx, PCIECTRL_TI_CONF_MSI_XMT, reg); } -static int dra7xx_pcie_raise_irq(struct dw_pcie_ep *ep, +static int dra7xx_pcie_raise_irq(struct dw_pcie_ep *ep, u8 func_no, enum pci_epc_irq_type type, u8 interrupt_num) { struct dw_pcie *pci = to_dw_pcie_from_ep(ep); @@ -470,6 +463,8 @@ static int __init dra7xx_add_pcie_port(struct dra7xx_pcie *dra7xx, if (!pci->dbi_base) return -ENOMEM; + pp->ops = &dra7xx_pcie_host_ops; + ret = dw_pcie_host_init(pp); if (ret) { dev_err(dev, "failed to initialize host\n"); @@ -599,7 +594,6 @@ static int __init dra7xx_pcie_probe(struct platform_device *pdev) void __iomem *base; struct resource *res; struct dw_pcie *pci; - struct pcie_port *pp; struct dra7xx_pcie *dra7xx; struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; @@ -627,9 +621,6 @@ static int __init dra7xx_pcie_probe(struct platform_device *pdev) pci->dev = dev; pci->ops = &dw_pcie_ops; - pp = &pci->pp; - pp->ops = &dra7xx_pcie_host_ops; - irq = platform_get_irq(pdev, 0); if (irq < 0) { dev_err(dev, "missing IRQ resource: %d\n", irq); @@ -705,6 +696,11 @@ static int __init dra7xx_pcie_probe(struct platform_device *pdev) switch (mode) { case DW_PCIE_RC_TYPE: + if (!IS_ENABLED(CONFIG_PCI_DRA7XX_HOST)) { + ret = -ENODEV; + goto err_gpio; + } + dra7xx_pcie_writel(dra7xx, PCIECTRL_TI_CONF_DEVICE_TYPE, DEVICE_TYPE_RC); ret = dra7xx_add_pcie_port(dra7xx, pdev); @@ -712,6 +708,11 @@ static int __init dra7xx_pcie_probe(struct platform_device *pdev) goto err_gpio; break; case DW_PCIE_EP_TYPE: + if (!IS_ENABLED(CONFIG_PCI_DRA7XX_EP)) { + ret = -ENODEV; + goto err_gpio; + } + dra7xx_pcie_writel(dra7xx, PCIECTRL_TI_CONF_DEVICE_TYPE, DEVICE_TYPE_EP); @@ -810,7 +811,7 @@ static int dra7xx_pcie_resume_noirq(struct device *dev) } #endif -void dra7xx_pcie_shutdown(struct platform_device *pdev) +static void dra7xx_pcie_shutdown(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct dra7xx_pcie *dra7xx = dev_get_drvdata(dev); diff --git a/drivers/pci/dwc/pci-exynos.c b/drivers/pci/dwc/pci-exynos.c index 5596fdedbb94..ca6278113936 100644 --- a/drivers/pci/dwc/pci-exynos.c +++ b/drivers/pci/dwc/pci-exynos.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCIe host controller driver for Samsung EXYNOS SoCs * @@ -5,10 +6,6 @@ * http://www.samsung.com * * Author: Jingoo Han <jg1.han@samsung.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/clk.h> @@ -55,49 +52,8 @@ #define PCIE_ELBI_SLV_ARMISC 0x120 #define PCIE_ELBI_SLV_DBI_ENABLE BIT(21) -/* PCIe Purple registers */ -#define PCIE_PHY_GLOBAL_RESET 0x000 -#define PCIE_PHY_COMMON_RESET 0x004 -#define PCIE_PHY_CMN_REG 0x008 -#define PCIE_PHY_MAC_RESET 0x00c -#define PCIE_PHY_PLL_LOCKED 0x010 -#define PCIE_PHY_TRSVREG_RESET 0x020 -#define PCIE_PHY_TRSV_RESET 0x024 - -/* PCIe PHY registers */ -#define PCIE_PHY_IMPEDANCE 0x004 -#define PCIE_PHY_PLL_DIV_0 0x008 -#define PCIE_PHY_PLL_BIAS 0x00c -#define PCIE_PHY_DCC_FEEDBACK 0x014 -#define PCIE_PHY_PLL_DIV_1 0x05c -#define PCIE_PHY_COMMON_POWER 0x064 -#define PCIE_PHY_COMMON_PD_CMN BIT(3) -#define PCIE_PHY_TRSV0_EMP_LVL 0x084 -#define PCIE_PHY_TRSV0_DRV_LVL 0x088 -#define PCIE_PHY_TRSV0_RXCDR 0x0ac -#define PCIE_PHY_TRSV0_POWER 0x0c4 -#define PCIE_PHY_TRSV0_PD_TSV BIT(7) -#define PCIE_PHY_TRSV0_LVCC 0x0dc -#define PCIE_PHY_TRSV1_EMP_LVL 0x144 -#define PCIE_PHY_TRSV1_RXCDR 0x16c -#define PCIE_PHY_TRSV1_POWER 0x184 -#define PCIE_PHY_TRSV1_PD_TSV BIT(7) -#define PCIE_PHY_TRSV1_LVCC 0x19c -#define PCIE_PHY_TRSV2_EMP_LVL 0x204 -#define PCIE_PHY_TRSV2_RXCDR 0x22c -#define PCIE_PHY_TRSV2_POWER 0x244 -#define PCIE_PHY_TRSV2_PD_TSV BIT(7) -#define PCIE_PHY_TRSV2_LVCC 0x25c -#define PCIE_PHY_TRSV3_EMP_LVL 0x2c4 -#define PCIE_PHY_TRSV3_RXCDR 0x2ec -#define PCIE_PHY_TRSV3_POWER 0x304 -#define PCIE_PHY_TRSV3_PD_TSV BIT(7) -#define PCIE_PHY_TRSV3_LVCC 0x31c - struct exynos_pcie_mem_res { void __iomem *elbi_base; /* DT 0th resource: PCIe CTRL */ - void __iomem *phy_base; /* DT 1st resource: PHY CTRL */ - void __iomem *block_base; /* DT 2nd resource: PHY ADDITIONAL CTRL */ }; struct exynos_pcie_clk_res { @@ -112,8 +68,6 @@ struct exynos_pcie { const struct exynos_pcie_ops *ops; int reset_gpio; - /* For Generic PHY Framework */ - bool using_phy; struct phy *phy; }; @@ -141,20 +95,6 @@ static int exynos5440_pcie_get_mem_resources(struct platform_device *pdev, if (IS_ERR(ep->mem_res->elbi_base)) return PTR_ERR(ep->mem_res->elbi_base); - /* If using the PHY framework, doesn't need to get other resource */ - if (ep->using_phy) - return 0; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 1); - ep->mem_res->phy_base = devm_ioremap_resource(dev, res); - if (IS_ERR(ep->mem_res->phy_base)) - return PTR_ERR(ep->mem_res->phy_base); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 2); - ep->mem_res->block_base = devm_ioremap_resource(dev, res); - if (IS_ERR(ep->mem_res->block_base)) - return PTR_ERR(ep->mem_res->block_base); - return 0; } @@ -279,111 +219,6 @@ static void exynos_pcie_deassert_core_reset(struct exynos_pcie *ep) exynos_pcie_writel(ep->mem_res->elbi_base, 1, PCIE_NONSTICKY_RESET); exynos_pcie_writel(ep->mem_res->elbi_base, 1, PCIE_APP_INIT_RESET); exynos_pcie_writel(ep->mem_res->elbi_base, 0, PCIE_APP_INIT_RESET); - exynos_pcie_writel(ep->mem_res->block_base, 1, PCIE_PHY_MAC_RESET); -} - -static void exynos_pcie_assert_phy_reset(struct exynos_pcie *ep) -{ - exynos_pcie_writel(ep->mem_res->block_base, 0, PCIE_PHY_MAC_RESET); - exynos_pcie_writel(ep->mem_res->block_base, 1, PCIE_PHY_GLOBAL_RESET); -} - -static void exynos_pcie_deassert_phy_reset(struct exynos_pcie *ep) -{ - exynos_pcie_writel(ep->mem_res->block_base, 0, PCIE_PHY_GLOBAL_RESET); - exynos_pcie_writel(ep->mem_res->elbi_base, 1, PCIE_PWR_RESET); - exynos_pcie_writel(ep->mem_res->block_base, 0, PCIE_PHY_COMMON_RESET); - exynos_pcie_writel(ep->mem_res->block_base, 0, PCIE_PHY_CMN_REG); - exynos_pcie_writel(ep->mem_res->block_base, 0, PCIE_PHY_TRSVREG_RESET); - exynos_pcie_writel(ep->mem_res->block_base, 0, PCIE_PHY_TRSV_RESET); -} - -static void exynos_pcie_power_on_phy(struct exynos_pcie *ep) -{ - u32 val; - - val = exynos_pcie_readl(ep->mem_res->phy_base, PCIE_PHY_COMMON_POWER); - val &= ~PCIE_PHY_COMMON_PD_CMN; - exynos_pcie_writel(ep->mem_res->phy_base, val, PCIE_PHY_COMMON_POWER); - - val = exynos_pcie_readl(ep->mem_res->phy_base, PCIE_PHY_TRSV0_POWER); - val &= ~PCIE_PHY_TRSV0_PD_TSV; - exynos_pcie_writel(ep->mem_res->phy_base, val, PCIE_PHY_TRSV0_POWER); - - val = exynos_pcie_readl(ep->mem_res->phy_base, PCIE_PHY_TRSV1_POWER); - val &= ~PCIE_PHY_TRSV1_PD_TSV; - exynos_pcie_writel(ep->mem_res->phy_base, val, PCIE_PHY_TRSV1_POWER); - - val = exynos_pcie_readl(ep->mem_res->phy_base, PCIE_PHY_TRSV2_POWER); - val &= ~PCIE_PHY_TRSV2_PD_TSV; - exynos_pcie_writel(ep->mem_res->phy_base, val, PCIE_PHY_TRSV2_POWER); - - val = exynos_pcie_readl(ep->mem_res->phy_base, PCIE_PHY_TRSV3_POWER); - val &= ~PCIE_PHY_TRSV3_PD_TSV; - exynos_pcie_writel(ep->mem_res->phy_base, val, PCIE_PHY_TRSV3_POWER); -} - -static void exynos_pcie_power_off_phy(struct exynos_pcie *ep) -{ - u32 val; - - val = exynos_pcie_readl(ep->mem_res->phy_base, PCIE_PHY_COMMON_POWER); - val |= PCIE_PHY_COMMON_PD_CMN; - exynos_pcie_writel(ep->mem_res->phy_base, val, PCIE_PHY_COMMON_POWER); - - val = exynos_pcie_readl(ep->mem_res->phy_base, PCIE_PHY_TRSV0_POWER); - val |= PCIE_PHY_TRSV0_PD_TSV; - exynos_pcie_writel(ep->mem_res->phy_base, val, PCIE_PHY_TRSV0_POWER); - - val = exynos_pcie_readl(ep->mem_res->phy_base, PCIE_PHY_TRSV1_POWER); - val |= PCIE_PHY_TRSV1_PD_TSV; - exynos_pcie_writel(ep->mem_res->phy_base, val, PCIE_PHY_TRSV1_POWER); - - val = exynos_pcie_readl(ep->mem_res->phy_base, PCIE_PHY_TRSV2_POWER); - val |= PCIE_PHY_TRSV2_PD_TSV; - exynos_pcie_writel(ep->mem_res->phy_base, val, PCIE_PHY_TRSV2_POWER); - - val = exynos_pcie_readl(ep->mem_res->phy_base, PCIE_PHY_TRSV3_POWER); - val |= PCIE_PHY_TRSV3_PD_TSV; - exynos_pcie_writel(ep->mem_res->phy_base, val, PCIE_PHY_TRSV3_POWER); -} - -static void exynos_pcie_init_phy(struct exynos_pcie *ep) -{ - /* DCC feedback control off */ - exynos_pcie_writel(ep->mem_res->phy_base, 0x29, PCIE_PHY_DCC_FEEDBACK); - - /* set TX/RX impedance */ - exynos_pcie_writel(ep->mem_res->phy_base, 0xd5, PCIE_PHY_IMPEDANCE); - - /* set 50Mhz PHY clock */ - exynos_pcie_writel(ep->mem_res->phy_base, 0x14, PCIE_PHY_PLL_DIV_0); - exynos_pcie_writel(ep->mem_res->phy_base, 0x12, PCIE_PHY_PLL_DIV_1); - - /* set TX Differential output for lane 0 */ - exynos_pcie_writel(ep->mem_res->phy_base, 0x7f, PCIE_PHY_TRSV0_DRV_LVL); - - /* set TX Pre-emphasis Level Control for lane 0 to minimum */ - exynos_pcie_writel(ep->mem_res->phy_base, 0x0, PCIE_PHY_TRSV0_EMP_LVL); - - /* set RX clock and data recovery bandwidth */ - exynos_pcie_writel(ep->mem_res->phy_base, 0xe7, PCIE_PHY_PLL_BIAS); - exynos_pcie_writel(ep->mem_res->phy_base, 0x82, PCIE_PHY_TRSV0_RXCDR); - exynos_pcie_writel(ep->mem_res->phy_base, 0x82, PCIE_PHY_TRSV1_RXCDR); - exynos_pcie_writel(ep->mem_res->phy_base, 0x82, PCIE_PHY_TRSV2_RXCDR); - exynos_pcie_writel(ep->mem_res->phy_base, 0x82, PCIE_PHY_TRSV3_RXCDR); - - /* change TX Pre-emphasis Level Control for lanes */ - exynos_pcie_writel(ep->mem_res->phy_base, 0x39, PCIE_PHY_TRSV0_EMP_LVL); - exynos_pcie_writel(ep->mem_res->phy_base, 0x39, PCIE_PHY_TRSV1_EMP_LVL); - exynos_pcie_writel(ep->mem_res->phy_base, 0x39, PCIE_PHY_TRSV2_EMP_LVL); - exynos_pcie_writel(ep->mem_res->phy_base, 0x39, PCIE_PHY_TRSV3_EMP_LVL); - - /* set LVCC */ - exynos_pcie_writel(ep->mem_res->phy_base, 0x20, PCIE_PHY_TRSV0_LVCC); - exynos_pcie_writel(ep->mem_res->phy_base, 0xa0, PCIE_PHY_TRSV1_LVCC); - exynos_pcie_writel(ep->mem_res->phy_base, 0xa0, PCIE_PHY_TRSV2_LVCC); - exynos_pcie_writel(ep->mem_res->phy_base, 0xa0, PCIE_PHY_TRSV3_LVCC); } static void exynos_pcie_assert_reset(struct exynos_pcie *ep) @@ -401,7 +236,6 @@ static int exynos_pcie_establish_link(struct exynos_pcie *ep) struct dw_pcie *pci = ep->pci; struct pcie_port *pp = &pci->pp; struct device *dev = pci->dev; - u32 val; if (dw_pcie_link_up(pci)) { dev_err(dev, "Link already up\n"); @@ -410,32 +244,13 @@ static int exynos_pcie_establish_link(struct exynos_pcie *ep) exynos_pcie_assert_core_reset(ep); - if (ep->using_phy) { - phy_reset(ep->phy); - - exynos_pcie_writel(ep->mem_res->elbi_base, 1, - PCIE_PWR_RESET); - - phy_power_on(ep->phy); - phy_init(ep->phy); - } else { - exynos_pcie_assert_phy_reset(ep); - exynos_pcie_deassert_phy_reset(ep); - exynos_pcie_power_on_phy(ep); - exynos_pcie_init_phy(ep); - - /* pulse for common reset */ - exynos_pcie_writel(ep->mem_res->block_base, 1, - PCIE_PHY_COMMON_RESET); - udelay(500); - exynos_pcie_writel(ep->mem_res->block_base, 0, - PCIE_PHY_COMMON_RESET); - } + phy_reset(ep->phy); - /* pulse for common reset */ - exynos_pcie_writel(ep->mem_res->block_base, 1, PCIE_PHY_COMMON_RESET); - udelay(500); - exynos_pcie_writel(ep->mem_res->block_base, 0, PCIE_PHY_COMMON_RESET); + exynos_pcie_writel(ep->mem_res->elbi_base, 1, + PCIE_PWR_RESET); + + phy_power_on(ep->phy); + phy_init(ep->phy); exynos_pcie_deassert_core_reset(ep); dw_pcie_setup_rc(pp); @@ -449,18 +264,7 @@ static int exynos_pcie_establish_link(struct exynos_pcie *ep) if (!dw_pcie_wait_for_link(pci)) return 0; - if (ep->using_phy) { - phy_power_off(ep->phy); - return -ETIMEDOUT; - } - - while (exynos_pcie_readl(ep->mem_res->phy_base, - PCIE_PHY_PLL_LOCKED) == 0) { - val = exynos_pcie_readl(ep->mem_res->block_base, - PCIE_PHY_PLL_LOCKED); - dev_info(dev, "PLL Locked: 0x%x\n", val); - } - exynos_pcie_power_off_phy(ep); + phy_power_off(ep->phy); return -ETIMEDOUT; } @@ -678,16 +482,13 @@ static int __init exynos_pcie_probe(struct platform_device *pdev) ep->reset_gpio = of_get_named_gpio(np, "reset-gpio", 0); - /* Assume that controller doesn't use the PHY framework */ - ep->using_phy = false; - ep->phy = devm_of_phy_get(dev, np, NULL); if (IS_ERR(ep->phy)) { if (PTR_ERR(ep->phy) == -EPROBE_DEFER) return PTR_ERR(ep->phy); - dev_warn(dev, "Use the 'phy' property. Current DT of pci-exynos was deprecated!!\n"); - } else - ep->using_phy = true; + + ep->phy = NULL; + } if (ep->ops && ep->ops->get_mem_resources) { ret = ep->ops->get_mem_resources(pdev, ep); @@ -695,7 +496,8 @@ static int __init exynos_pcie_probe(struct platform_device *pdev) return ret; } - if (ep->ops && ep->ops->get_clk_resources) { + if (ep->ops && ep->ops->get_clk_resources && + ep->ops->init_clk_resources) { ret = ep->ops->get_clk_resources(ep); if (ret) return ret; @@ -713,8 +515,7 @@ static int __init exynos_pcie_probe(struct platform_device *pdev) return 0; fail_probe: - if (ep->using_phy) - phy_exit(ep->phy); + phy_exit(ep->phy); if (ep->ops && ep->ops->deinit_clk_resources) ep->ops->deinit_clk_resources(ep); diff --git a/drivers/pci/dwc/pci-imx6.c b/drivers/pci/dwc/pci-imx6.c index b73483534a5b..4fddbd08b089 100644 --- a/drivers/pci/dwc/pci-imx6.c +++ b/drivers/pci/dwc/pci-imx6.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCIe host controller driver for Freescale i.MX6 SoCs * @@ -5,10 +6,6 @@ * http://www.kosagi.com * * Author: Sean Cross <xobs@kosagi.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/clk.h> diff --git a/drivers/pci/dwc/pci-keystone-dw.c b/drivers/pci/dwc/pci-keystone-dw.c index 2fb20b887d2a..99a0e7076221 100644 --- a/drivers/pci/dwc/pci-keystone-dw.c +++ b/drivers/pci/dwc/pci-keystone-dw.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * DesignWare application register space functions for Keystone PCI controller * @@ -5,11 +6,6 @@ * http://www.ti.com * * Author: Murali Karicheri <m-karicheri2@ti.com> - * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/irq.h> diff --git a/drivers/pci/dwc/pci-keystone.c b/drivers/pci/dwc/pci-keystone.c index 5bee3af47588..d4f8ab90c018 100644 --- a/drivers/pci/dwc/pci-keystone.c +++ b/drivers/pci/dwc/pci-keystone.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCIe host controller driver for Texas Instruments Keystone SoCs * @@ -6,10 +7,6 @@ * * Author: Murali Karicheri <m-karicheri2@ti.com> * Implementation based on pci-exynos.c and pcie-designware.c - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/irqchip/chained_irq.h> @@ -178,7 +175,7 @@ static int ks_pcie_get_irq_controller_info(struct keystone_pcie *ks_pcie, } /* interrupt controller is in a child node */ - *np_temp = of_find_node_by_name(np_pcie, controller); + *np_temp = of_get_child_by_name(np_pcie, controller); if (!(*np_temp)) { dev_err(dev, "Node for %s is absent\n", controller); return -EINVAL; @@ -187,6 +184,7 @@ static int ks_pcie_get_irq_controller_info(struct keystone_pcie *ks_pcie, temp = of_irq_count(*np_temp); if (!temp) { dev_err(dev, "No IRQ entries in %s\n", controller); + of_node_put(*np_temp); return -EINVAL; } @@ -204,6 +202,8 @@ static int ks_pcie_get_irq_controller_info(struct keystone_pcie *ks_pcie, break; } + of_node_put(*np_temp); + if (temp) { *num_irqs = temp; return 0; diff --git a/drivers/pci/dwc/pci-keystone.h b/drivers/pci/dwc/pci-keystone.h index 30b7bc2ac380..1dd1f3ef98e7 100644 --- a/drivers/pci/dwc/pci-keystone.h +++ b/drivers/pci/dwc/pci-keystone.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Keystone PCI Controller's common includes * @@ -5,11 +6,6 @@ * http://www.ti.com * * Author: Murali Karicheri <m-karicheri2@ti.com> - * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define MAX_MSI_HOST_IRQS 8 diff --git a/drivers/pci/dwc/pci-layerscape.c b/drivers/pci/dwc/pci-layerscape.c index 8f34c2fdc600..a7b4159631ae 100644 --- a/drivers/pci/dwc/pci-layerscape.c +++ b/drivers/pci/dwc/pci-layerscape.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCIe host controller driver for Freescale Layerscape SoCs * * Copyright (C) 2014 Freescale Semiconductor. * * Author: Minghuan Lian <Minghuan.Lian@freescale.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/kernel.h> diff --git a/drivers/pci/dwc/pcie-armada8k.c b/drivers/pci/dwc/pcie-armada8k.c index 370d057c0046..b587352f8b9f 100644 --- a/drivers/pci/dwc/pcie-armada8k.c +++ b/drivers/pci/dwc/pcie-armada8k.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCIe host controller driver for Marvell Armada-8K SoCs * @@ -7,10 +8,6 @@ * * Author: Yehuda Yitshak <yehuday@marvell.com> * Author: Shadi Ammouri <shadi@marvell.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. */ #include <linux/clk.h> diff --git a/drivers/pci/dwc/pcie-artpec6.c b/drivers/pci/dwc/pcie-artpec6.c index 6653619db6a1..93b3df9ed1b5 100644 --- a/drivers/pci/dwc/pcie-artpec6.c +++ b/drivers/pci/dwc/pcie-artpec6.c @@ -1,18 +1,16 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCIe host controller driver for Axis ARTPEC-6 SoC * * Author: Niklas Cassel <niklas.cassel@axis.com> * * Based on work done by Phil Edworthy <phil@edworthys.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/delay.h> #include <linux/kernel.h> #include <linux/init.h> +#include <linux/of_device.h> #include <linux/pci.h> #include <linux/platform_device.h> #include <linux/resource.h> @@ -26,44 +24,72 @@ #define to_artpec6_pcie(x) dev_get_drvdata((x)->dev) +enum artpec_pcie_variants { + ARTPEC6, + ARTPEC7, +}; + struct artpec6_pcie { struct dw_pcie *pci; struct regmap *regmap; /* DT axis,syscon-pcie */ void __iomem *phy_base; /* DT phy */ + enum artpec_pcie_variants variant; + enum dw_pcie_device_mode mode; }; +struct artpec_pcie_of_data { + enum artpec_pcie_variants variant; + enum dw_pcie_device_mode mode; +}; + +static const struct of_device_id artpec6_pcie_of_match[]; + /* PCIe Port Logic registers (memory-mapped) */ #define PL_OFFSET 0x700 -#define PCIE_PHY_DEBUG_R0 (PL_OFFSET + 0x28) -#define PCIE_PHY_DEBUG_R1 (PL_OFFSET + 0x2c) -#define MISC_CONTROL_1_OFF (PL_OFFSET + 0x1bc) -#define DBI_RO_WR_EN 1 +#define ACK_F_ASPM_CTRL_OFF (PL_OFFSET + 0xc) +#define ACK_N_FTS_MASK GENMASK(15, 8) +#define ACK_N_FTS(x) (((x) << 8) & ACK_N_FTS_MASK) + +#define FAST_TRAINING_SEQ_MASK GENMASK(7, 0) +#define FAST_TRAINING_SEQ(x) (((x) << 0) & FAST_TRAINING_SEQ_MASK) /* ARTPEC-6 specific registers */ #define PCIECFG 0x18 -#define PCIECFG_DBG_OEN (1 << 24) -#define PCIECFG_CORE_RESET_REQ (1 << 21) -#define PCIECFG_LTSSM_ENABLE (1 << 20) -#define PCIECFG_CLKREQ_B (1 << 11) -#define PCIECFG_REFCLK_ENABLE (1 << 10) -#define PCIECFG_PLL_ENABLE (1 << 9) -#define PCIECFG_PCLK_ENABLE (1 << 8) -#define PCIECFG_RISRCREN (1 << 4) -#define PCIECFG_MODE_TX_DRV_EN (1 << 3) -#define PCIECFG_CISRREN (1 << 2) -#define PCIECFG_MACRO_ENABLE (1 << 0) +#define PCIECFG_DBG_OEN BIT(24) +#define PCIECFG_CORE_RESET_REQ BIT(21) +#define PCIECFG_LTSSM_ENABLE BIT(20) +#define PCIECFG_DEVICE_TYPE_MASK GENMASK(19, 16) +#define PCIECFG_CLKREQ_B BIT(11) +#define PCIECFG_REFCLK_ENABLE BIT(10) +#define PCIECFG_PLL_ENABLE BIT(9) +#define PCIECFG_PCLK_ENABLE BIT(8) +#define PCIECFG_RISRCREN BIT(4) +#define PCIECFG_MODE_TX_DRV_EN BIT(3) +#define PCIECFG_CISRREN BIT(2) +#define PCIECFG_MACRO_ENABLE BIT(0) +/* ARTPEC-7 specific fields */ +#define PCIECFG_REFCLKSEL BIT(23) +#define PCIECFG_NOC_RESET BIT(3) + +#define PCIESTAT 0x1c +/* ARTPEC-7 specific fields */ +#define PCIESTAT_EXTREFCLK BIT(3) #define NOCCFG 0x40 -#define NOCCFG_ENABLE_CLK_PCIE (1 << 4) -#define NOCCFG_POWER_PCIE_IDLEACK (1 << 3) -#define NOCCFG_POWER_PCIE_IDLE (1 << 2) -#define NOCCFG_POWER_PCIE_IDLEREQ (1 << 1) +#define NOCCFG_ENABLE_CLK_PCIE BIT(4) +#define NOCCFG_POWER_PCIE_IDLEACK BIT(3) +#define NOCCFG_POWER_PCIE_IDLE BIT(2) +#define NOCCFG_POWER_PCIE_IDLEREQ BIT(1) #define PHY_STATUS 0x118 -#define PHY_COSPLLLOCK (1 << 0) +#define PHY_COSPLLLOCK BIT(0) + +#define PHY_TX_ASIC_OUT 0x4040 +#define PHY_TX_ASIC_OUT_TX_ACK BIT(0) -#define ARTPEC6_CPU_TO_BUS_ADDR 0x0fffffff +#define PHY_RX_ASIC_OUT 0x405c +#define PHY_RX_ASIC_OUT_ACK BIT(0) static u32 artpec6_pcie_readl(struct artpec6_pcie *artpec6_pcie, u32 offset) { @@ -78,22 +104,123 @@ static void artpec6_pcie_writel(struct artpec6_pcie *artpec6_pcie, u32 offset, u regmap_write(artpec6_pcie->regmap, offset, val); } -static u64 artpec6_pcie_cpu_addr_fixup(u64 pci_addr) +static u64 artpec6_pcie_cpu_addr_fixup(struct dw_pcie *pci, u64 pci_addr) { - return pci_addr & ARTPEC6_CPU_TO_BUS_ADDR; + struct artpec6_pcie *artpec6_pcie = to_artpec6_pcie(pci); + struct pcie_port *pp = &pci->pp; + struct dw_pcie_ep *ep = &pci->ep; + + switch (artpec6_pcie->mode) { + case DW_PCIE_RC_TYPE: + return pci_addr - pp->cfg0_base; + case DW_PCIE_EP_TYPE: + return pci_addr - ep->phys_base; + default: + dev_err(pci->dev, "UNKNOWN device type\n"); + } + return pci_addr; } -static int artpec6_pcie_establish_link(struct artpec6_pcie *artpec6_pcie) +static int artpec6_pcie_establish_link(struct dw_pcie *pci) { - struct dw_pcie *pci = artpec6_pcie->pci; - struct pcie_port *pp = &pci->pp; + struct artpec6_pcie *artpec6_pcie = to_artpec6_pcie(pci); + u32 val; + + val = artpec6_pcie_readl(artpec6_pcie, PCIECFG); + val |= PCIECFG_LTSSM_ENABLE; + artpec6_pcie_writel(artpec6_pcie, PCIECFG, val); + + return 0; +} + +static void artpec6_pcie_stop_link(struct dw_pcie *pci) +{ + struct artpec6_pcie *artpec6_pcie = to_artpec6_pcie(pci); u32 val; - unsigned int retries; - /* Hold DW core in reset */ val = artpec6_pcie_readl(artpec6_pcie, PCIECFG); - val |= PCIECFG_CORE_RESET_REQ; + val &= ~PCIECFG_LTSSM_ENABLE; artpec6_pcie_writel(artpec6_pcie, PCIECFG, val); +} + +static const struct dw_pcie_ops dw_pcie_ops = { + .cpu_addr_fixup = artpec6_pcie_cpu_addr_fixup, + .start_link = artpec6_pcie_establish_link, + .stop_link = artpec6_pcie_stop_link, +}; + +static void artpec6_pcie_wait_for_phy_a6(struct artpec6_pcie *artpec6_pcie) +{ + struct dw_pcie *pci = artpec6_pcie->pci; + struct device *dev = pci->dev; + u32 val; + unsigned int retries; + + retries = 50; + do { + usleep_range(1000, 2000); + val = artpec6_pcie_readl(artpec6_pcie, NOCCFG); + retries--; + } while (retries && + (val & (NOCCFG_POWER_PCIE_IDLEACK | NOCCFG_POWER_PCIE_IDLE))); + if (!retries) + dev_err(dev, "PCIe clock manager did not leave idle state\n"); + + retries = 50; + do { + usleep_range(1000, 2000); + val = readl(artpec6_pcie->phy_base + PHY_STATUS); + retries--; + } while (retries && !(val & PHY_COSPLLLOCK)); + if (!retries) + dev_err(dev, "PHY PLL did not lock\n"); +} + +static void artpec6_pcie_wait_for_phy_a7(struct artpec6_pcie *artpec6_pcie) +{ + struct dw_pcie *pci = artpec6_pcie->pci; + struct device *dev = pci->dev; + u32 val; + u16 phy_status_tx, phy_status_rx; + unsigned int retries; + + retries = 50; + do { + usleep_range(1000, 2000); + val = artpec6_pcie_readl(artpec6_pcie, NOCCFG); + retries--; + } while (retries && + (val & (NOCCFG_POWER_PCIE_IDLEACK | NOCCFG_POWER_PCIE_IDLE))); + if (!retries) + dev_err(dev, "PCIe clock manager did not leave idle state\n"); + + retries = 50; + do { + usleep_range(1000, 2000); + phy_status_tx = readw(artpec6_pcie->phy_base + PHY_TX_ASIC_OUT); + phy_status_rx = readw(artpec6_pcie->phy_base + PHY_RX_ASIC_OUT); + retries--; + } while (retries && ((phy_status_tx & PHY_TX_ASIC_OUT_TX_ACK) || + (phy_status_rx & PHY_RX_ASIC_OUT_ACK))); + if (!retries) + dev_err(dev, "PHY did not enter Pn state\n"); +} + +static void artpec6_pcie_wait_for_phy(struct artpec6_pcie *artpec6_pcie) +{ + switch (artpec6_pcie->variant) { + case ARTPEC6: + artpec6_pcie_wait_for_phy_a6(artpec6_pcie); + break; + case ARTPEC7: + artpec6_pcie_wait_for_phy_a7(artpec6_pcie); + break; + } +} + +static void artpec6_pcie_init_phy_a6(struct artpec6_pcie *artpec6_pcie) +{ + u32 val; val = artpec6_pcie_readl(artpec6_pcie, PCIECFG); val |= PCIECFG_RISRCREN | /* Receiver term. 50 Ohm */ @@ -119,45 +246,110 @@ static int artpec6_pcie_establish_link(struct artpec6_pcie *artpec6_pcie) val = artpec6_pcie_readl(artpec6_pcie, NOCCFG); val &= ~NOCCFG_POWER_PCIE_IDLEREQ; artpec6_pcie_writel(artpec6_pcie, NOCCFG, val); +} - retries = 50; - do { - usleep_range(1000, 2000); - val = artpec6_pcie_readl(artpec6_pcie, NOCCFG); - retries--; - } while (retries && - (val & (NOCCFG_POWER_PCIE_IDLEACK | NOCCFG_POWER_PCIE_IDLE))); +static void artpec6_pcie_init_phy_a7(struct artpec6_pcie *artpec6_pcie) +{ + struct dw_pcie *pci = artpec6_pcie->pci; + u32 val; + bool extrefclk; - retries = 50; - do { - usleep_range(1000, 2000); - val = readl(artpec6_pcie->phy_base + PHY_STATUS); - retries--; - } while (retries && !(val & PHY_COSPLLLOCK)); + /* Check if external reference clock is connected */ + val = artpec6_pcie_readl(artpec6_pcie, PCIESTAT); + extrefclk = !!(val & PCIESTAT_EXTREFCLK); + dev_dbg(pci->dev, "Using reference clock: %s\n", + extrefclk ? "external" : "internal"); - /* Take DW core out of reset */ val = artpec6_pcie_readl(artpec6_pcie, PCIECFG); - val &= ~PCIECFG_CORE_RESET_REQ; + val |= PCIECFG_RISRCREN | /* Receiver term. 50 Ohm */ + PCIECFG_PCLK_ENABLE; + if (extrefclk) + val |= PCIECFG_REFCLKSEL; + else + val &= ~PCIECFG_REFCLKSEL; artpec6_pcie_writel(artpec6_pcie, PCIECFG, val); - usleep_range(100, 200); + usleep_range(10, 20); - /* setup root complex */ - dw_pcie_setup_rc(pp); + val = artpec6_pcie_readl(artpec6_pcie, NOCCFG); + val |= NOCCFG_ENABLE_CLK_PCIE; + artpec6_pcie_writel(artpec6_pcie, NOCCFG, val); + usleep_range(20, 30); + + val = artpec6_pcie_readl(artpec6_pcie, NOCCFG); + val &= ~NOCCFG_POWER_PCIE_IDLEREQ; + artpec6_pcie_writel(artpec6_pcie, NOCCFG, val); +} + +static void artpec6_pcie_init_phy(struct artpec6_pcie *artpec6_pcie) +{ + switch (artpec6_pcie->variant) { + case ARTPEC6: + artpec6_pcie_init_phy_a6(artpec6_pcie); + break; + case ARTPEC7: + artpec6_pcie_init_phy_a7(artpec6_pcie); + break; + } +} + +static void artpec6_pcie_set_nfts(struct artpec6_pcie *artpec6_pcie) +{ + struct dw_pcie *pci = artpec6_pcie->pci; + u32 val; + + if (artpec6_pcie->variant != ARTPEC7) + return; + + /* + * Increase the N_FTS (Number of Fast Training Sequences) + * to be transmitted when transitioning from L0s to L0. + */ + val = dw_pcie_readl_dbi(pci, ACK_F_ASPM_CTRL_OFF); + val &= ~ACK_N_FTS_MASK; + val |= ACK_N_FTS(180); + dw_pcie_writel_dbi(pci, ACK_F_ASPM_CTRL_OFF, val); + + /* + * Set the Number of Fast Training Sequences that the core + * advertises as its N_FTS during Gen2 or Gen3 link training. + */ + val = dw_pcie_readl_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL); + val &= ~FAST_TRAINING_SEQ_MASK; + val |= FAST_TRAINING_SEQ(180); + dw_pcie_writel_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL, val); +} + +static void artpec6_pcie_assert_core_reset(struct artpec6_pcie *artpec6_pcie) +{ + u32 val; - /* assert LTSSM enable */ val = artpec6_pcie_readl(artpec6_pcie, PCIECFG); - val |= PCIECFG_LTSSM_ENABLE; + switch (artpec6_pcie->variant) { + case ARTPEC6: + val |= PCIECFG_CORE_RESET_REQ; + break; + case ARTPEC7: + val &= ~PCIECFG_NOC_RESET; + break; + } artpec6_pcie_writel(artpec6_pcie, PCIECFG, val); +} - /* check if the link is up or not */ - if (!dw_pcie_wait_for_link(pci)) - return 0; - - dev_dbg(pci->dev, "DEBUG_R0: 0x%08x, DEBUG_R1: 0x%08x\n", - dw_pcie_readl_dbi(pci, PCIE_PHY_DEBUG_R0), - dw_pcie_readl_dbi(pci, PCIE_PHY_DEBUG_R1)); +static void artpec6_pcie_deassert_core_reset(struct artpec6_pcie *artpec6_pcie) +{ + u32 val; - return -ETIMEDOUT; + val = artpec6_pcie_readl(artpec6_pcie, PCIECFG); + switch (artpec6_pcie->variant) { + case ARTPEC6: + val &= ~PCIECFG_CORE_RESET_REQ; + break; + case ARTPEC7: + val |= PCIECFG_NOC_RESET; + break; + } + artpec6_pcie_writel(artpec6_pcie, PCIECFG, val); + usleep_range(100, 200); } static void artpec6_pcie_enable_interrupts(struct artpec6_pcie *artpec6_pcie) @@ -174,7 +366,14 @@ static int artpec6_pcie_host_init(struct pcie_port *pp) struct dw_pcie *pci = to_dw_pcie_from_pp(pp); struct artpec6_pcie *artpec6_pcie = to_artpec6_pcie(pci); - artpec6_pcie_establish_link(artpec6_pcie); + artpec6_pcie_assert_core_reset(artpec6_pcie); + artpec6_pcie_init_phy(artpec6_pcie); + artpec6_pcie_deassert_core_reset(artpec6_pcie); + artpec6_pcie_wait_for_phy(artpec6_pcie); + artpec6_pcie_set_nfts(artpec6_pcie); + dw_pcie_setup_rc(pp); + artpec6_pcie_establish_link(pci); + dw_pcie_wait_for_link(pci); artpec6_pcie_enable_interrupts(artpec6_pcie); return 0; @@ -230,10 +429,78 @@ static int artpec6_add_pcie_port(struct artpec6_pcie *artpec6_pcie, return 0; } -static const struct dw_pcie_ops dw_pcie_ops = { - .cpu_addr_fixup = artpec6_pcie_cpu_addr_fixup, +static void artpec6_pcie_ep_init(struct dw_pcie_ep *ep) +{ + struct dw_pcie *pci = to_dw_pcie_from_ep(ep); + struct artpec6_pcie *artpec6_pcie = to_artpec6_pcie(pci); + enum pci_barno bar; + + artpec6_pcie_assert_core_reset(artpec6_pcie); + artpec6_pcie_init_phy(artpec6_pcie); + artpec6_pcie_deassert_core_reset(artpec6_pcie); + artpec6_pcie_wait_for_phy(artpec6_pcie); + artpec6_pcie_set_nfts(artpec6_pcie); + + for (bar = BAR_0; bar <= BAR_5; bar++) + dw_pcie_ep_reset_bar(pci, bar); +} + +static int artpec6_pcie_raise_irq(struct dw_pcie_ep *ep, u8 func_no, + enum pci_epc_irq_type type, u8 interrupt_num) +{ + struct dw_pcie *pci = to_dw_pcie_from_ep(ep); + + switch (type) { + case PCI_EPC_IRQ_LEGACY: + dev_err(pci->dev, "EP cannot trigger legacy IRQs\n"); + return -EINVAL; + case PCI_EPC_IRQ_MSI: + return dw_pcie_ep_raise_msi_irq(ep, func_no, interrupt_num); + default: + dev_err(pci->dev, "UNKNOWN IRQ type\n"); + } + + return 0; +} + +static struct dw_pcie_ep_ops pcie_ep_ops = { + .ep_init = artpec6_pcie_ep_init, + .raise_irq = artpec6_pcie_raise_irq, }; +static int artpec6_add_pcie_ep(struct artpec6_pcie *artpec6_pcie, + struct platform_device *pdev) +{ + int ret; + struct dw_pcie_ep *ep; + struct resource *res; + struct device *dev = &pdev->dev; + struct dw_pcie *pci = artpec6_pcie->pci; + + ep = &pci->ep; + ep->ops = &pcie_ep_ops; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi2"); + pci->dbi_base2 = devm_ioremap(dev, res->start, resource_size(res)); + if (!pci->dbi_base2) + return -ENOMEM; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "addr_space"); + if (!res) + return -EINVAL; + + ep->phys_base = res->start; + ep->addr_size = resource_size(res); + + ret = dw_pcie_ep_init(ep); + if (ret) { + dev_err(dev, "failed to initialize endpoint\n"); + return ret; + } + + return 0; +} + static int artpec6_pcie_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -242,6 +509,18 @@ static int artpec6_pcie_probe(struct platform_device *pdev) struct resource *dbi_base; struct resource *phy_base; int ret; + const struct of_device_id *match; + const struct artpec_pcie_of_data *data; + enum artpec_pcie_variants variant; + enum dw_pcie_device_mode mode; + + match = of_match_device(artpec6_pcie_of_match, dev); + if (!match) + return -EINVAL; + + data = (struct artpec_pcie_of_data *)match->data; + variant = (enum artpec_pcie_variants)data->variant; + mode = (enum dw_pcie_device_mode)data->mode; artpec6_pcie = devm_kzalloc(dev, sizeof(*artpec6_pcie), GFP_KERNEL); if (!artpec6_pcie) @@ -255,6 +534,8 @@ static int artpec6_pcie_probe(struct platform_device *pdev) pci->ops = &dw_pcie_ops; artpec6_pcie->pci = pci; + artpec6_pcie->variant = variant; + artpec6_pcie->mode = mode; dbi_base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi"); pci->dbi_base = devm_ioremap_resource(dev, dbi_base); @@ -274,15 +555,73 @@ static int artpec6_pcie_probe(struct platform_device *pdev) platform_set_drvdata(pdev, artpec6_pcie); - ret = artpec6_add_pcie_port(artpec6_pcie, pdev); - if (ret < 0) - return ret; + switch (artpec6_pcie->mode) { + case DW_PCIE_RC_TYPE: + if (!IS_ENABLED(CONFIG_PCIE_ARTPEC6_HOST)) + return -ENODEV; + + ret = artpec6_add_pcie_port(artpec6_pcie, pdev); + if (ret < 0) + return ret; + break; + case DW_PCIE_EP_TYPE: { + u32 val; + + if (!IS_ENABLED(CONFIG_PCIE_ARTPEC6_EP)) + return -ENODEV; + + val = artpec6_pcie_readl(artpec6_pcie, PCIECFG); + val &= ~PCIECFG_DEVICE_TYPE_MASK; + artpec6_pcie_writel(artpec6_pcie, PCIECFG, val); + ret = artpec6_add_pcie_ep(artpec6_pcie, pdev); + if (ret < 0) + return ret; + break; + } + default: + dev_err(dev, "INVALID device type %d\n", artpec6_pcie->mode); + } return 0; } +static const struct artpec_pcie_of_data artpec6_pcie_rc_of_data = { + .variant = ARTPEC6, + .mode = DW_PCIE_RC_TYPE, +}; + +static const struct artpec_pcie_of_data artpec6_pcie_ep_of_data = { + .variant = ARTPEC6, + .mode = DW_PCIE_EP_TYPE, +}; + +static const struct artpec_pcie_of_data artpec7_pcie_rc_of_data = { + .variant = ARTPEC7, + .mode = DW_PCIE_RC_TYPE, +}; + +static const struct artpec_pcie_of_data artpec7_pcie_ep_of_data = { + .variant = ARTPEC7, + .mode = DW_PCIE_EP_TYPE, +}; + static const struct of_device_id artpec6_pcie_of_match[] = { - { .compatible = "axis,artpec6-pcie", }, + { + .compatible = "axis,artpec6-pcie", + .data = &artpec6_pcie_rc_of_data, + }, + { + .compatible = "axis,artpec6-pcie-ep", + .data = &artpec6_pcie_ep_of_data, + }, + { + .compatible = "axis,artpec7-pcie", + .data = &artpec7_pcie_rc_of_data, + }, + { + .compatible = "axis,artpec7-pcie-ep", + .data = &artpec7_pcie_ep_of_data, + }, {}, }; diff --git a/drivers/pci/dwc/pcie-designware-ep.c b/drivers/pci/dwc/pcie-designware-ep.c index d53d5f168363..3a6feeff5f5b 100644 --- a/drivers/pci/dwc/pcie-designware-ep.c +++ b/drivers/pci/dwc/pcie-designware-ep.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /** * Synopsys DesignWare PCIe Endpoint controller driver * * Copyright (C) 2017 Texas Instruments * Author: Kishon Vijay Abraham I <kishon@ti.com> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 of - * the License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/of.h> @@ -30,21 +19,24 @@ void dw_pcie_ep_linkup(struct dw_pcie_ep *ep) pci_epc_linkup(epc); } -static void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar) +void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar) { u32 reg; reg = PCI_BASE_ADDRESS_0 + (4 * bar); + dw_pcie_dbi_ro_wr_en(pci); dw_pcie_writel_dbi2(pci, reg, 0x0); dw_pcie_writel_dbi(pci, reg, 0x0); + dw_pcie_dbi_ro_wr_dis(pci); } -static int dw_pcie_ep_write_header(struct pci_epc *epc, +static int dw_pcie_ep_write_header(struct pci_epc *epc, u8 func_no, struct pci_epf_header *hdr) { struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); + dw_pcie_dbi_ro_wr_en(pci); dw_pcie_writew_dbi(pci, PCI_VENDOR_ID, hdr->vendorid); dw_pcie_writew_dbi(pci, PCI_DEVICE_ID, hdr->deviceid); dw_pcie_writeb_dbi(pci, PCI_REVISION_ID, hdr->revid); @@ -58,6 +50,7 @@ static int dw_pcie_ep_write_header(struct pci_epc *epc, dw_pcie_writew_dbi(pci, PCI_SUBSYSTEM_ID, hdr->subsys_id); dw_pcie_writeb_dbi(pci, PCI_INTERRUPT_PIN, hdr->interrupt_pin); + dw_pcie_dbi_ro_wr_dis(pci); return 0; } @@ -70,8 +63,7 @@ static int dw_pcie_ep_inbound_atu(struct dw_pcie_ep *ep, enum pci_barno bar, u32 free_win; struct dw_pcie *pci = to_dw_pcie_from_ep(ep); - free_win = find_first_zero_bit(&ep->ib_window_map, - sizeof(ep->ib_window_map)); + free_win = find_first_zero_bit(ep->ib_window_map, ep->num_ib_windows); if (free_win >= ep->num_ib_windows) { dev_err(pci->dev, "no free inbound window\n"); return -EINVAL; @@ -85,7 +77,7 @@ static int dw_pcie_ep_inbound_atu(struct dw_pcie_ep *ep, enum pci_barno bar, } ep->bar_to_atu[bar] = free_win; - set_bit(free_win, &ep->ib_window_map); + set_bit(free_win, ep->ib_window_map); return 0; } @@ -96,8 +88,7 @@ static int dw_pcie_ep_outbound_atu(struct dw_pcie_ep *ep, phys_addr_t phys_addr, u32 free_win; struct dw_pcie *pci = to_dw_pcie_from_ep(ep); - free_win = find_first_zero_bit(&ep->ob_window_map, - sizeof(ep->ob_window_map)); + free_win = find_first_zero_bit(ep->ob_window_map, ep->num_ob_windows); if (free_win >= ep->num_ob_windows) { dev_err(pci->dev, "no free outbound window\n"); return -EINVAL; @@ -106,13 +97,14 @@ static int dw_pcie_ep_outbound_atu(struct dw_pcie_ep *ep, phys_addr_t phys_addr, dw_pcie_prog_outbound_atu(pci, free_win, PCIE_ATU_TYPE_MEM, phys_addr, pci_addr, size); - set_bit(free_win, &ep->ob_window_map); + set_bit(free_win, ep->ob_window_map); ep->outbound_addr[free_win] = phys_addr; return 0; } -static void dw_pcie_ep_clear_bar(struct pci_epc *epc, enum pci_barno bar) +static void dw_pcie_ep_clear_bar(struct pci_epc *epc, u8 func_no, + enum pci_barno bar) { struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); @@ -121,10 +113,11 @@ static void dw_pcie_ep_clear_bar(struct pci_epc *epc, enum pci_barno bar) dw_pcie_ep_reset_bar(pci, bar); dw_pcie_disable_atu(pci, atu_index, DW_PCIE_REGION_INBOUND); - clear_bit(atu_index, &ep->ib_window_map); + clear_bit(atu_index, ep->ib_window_map); } -static int dw_pcie_ep_set_bar(struct pci_epc *epc, enum pci_barno bar, +static int dw_pcie_ep_set_bar(struct pci_epc *epc, u8 func_no, + enum pci_barno bar, dma_addr_t bar_phys, size_t size, int flags) { int ret; @@ -142,8 +135,10 @@ static int dw_pcie_ep_set_bar(struct pci_epc *epc, enum pci_barno bar, if (ret) return ret; + dw_pcie_dbi_ro_wr_en(pci); dw_pcie_writel_dbi2(pci, reg, size - 1); dw_pcie_writel_dbi(pci, reg, flags); + dw_pcie_dbi_ro_wr_dis(pci); return 0; } @@ -163,7 +158,8 @@ static int dw_pcie_find_index(struct dw_pcie_ep *ep, phys_addr_t addr, return -EINVAL; } -static void dw_pcie_ep_unmap_addr(struct pci_epc *epc, phys_addr_t addr) +static void dw_pcie_ep_unmap_addr(struct pci_epc *epc, u8 func_no, + phys_addr_t addr) { int ret; u32 atu_index; @@ -175,10 +171,11 @@ static void dw_pcie_ep_unmap_addr(struct pci_epc *epc, phys_addr_t addr) return; dw_pcie_disable_atu(pci, atu_index, DW_PCIE_REGION_OUTBOUND); - clear_bit(atu_index, &ep->ob_window_map); + clear_bit(atu_index, ep->ob_window_map); } -static int dw_pcie_ep_map_addr(struct pci_epc *epc, phys_addr_t addr, +static int dw_pcie_ep_map_addr(struct pci_epc *epc, u8 func_no, + phys_addr_t addr, u64 pci_addr, size_t size) { int ret; @@ -194,39 +191,37 @@ static int dw_pcie_ep_map_addr(struct pci_epc *epc, phys_addr_t addr, return 0; } -static int dw_pcie_ep_get_msi(struct pci_epc *epc) +static int dw_pcie_ep_get_msi(struct pci_epc *epc, u8 func_no) { int val; - u32 lower_addr; - u32 upper_addr; struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); - val = dw_pcie_readb_dbi(pci, MSI_MESSAGE_CONTROL); - val = (val & MSI_CAP_MME_MASK) >> MSI_CAP_MME_SHIFT; - - lower_addr = dw_pcie_readl_dbi(pci, MSI_MESSAGE_ADDR_L32); - upper_addr = dw_pcie_readl_dbi(pci, MSI_MESSAGE_ADDR_U32); - - if (!(lower_addr || upper_addr)) + val = dw_pcie_readw_dbi(pci, MSI_MESSAGE_CONTROL); + if (!(val & MSI_CAP_MSI_EN_MASK)) return -EINVAL; + val = (val & MSI_CAP_MME_MASK) >> MSI_CAP_MME_SHIFT; return val; } -static int dw_pcie_ep_set_msi(struct pci_epc *epc, u8 encode_int) +static int dw_pcie_ep_set_msi(struct pci_epc *epc, u8 func_no, u8 encode_int) { int val; struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); - val = (encode_int << MSI_CAP_MMC_SHIFT); + val = dw_pcie_readw_dbi(pci, MSI_MESSAGE_CONTROL); + val &= ~MSI_CAP_MMC_MASK; + val |= (encode_int << MSI_CAP_MMC_SHIFT) & MSI_CAP_MMC_MASK; + dw_pcie_dbi_ro_wr_en(pci); dw_pcie_writew_dbi(pci, MSI_MESSAGE_CONTROL, val); + dw_pcie_dbi_ro_wr_dis(pci); return 0; } -static int dw_pcie_ep_raise_irq(struct pci_epc *epc, +static int dw_pcie_ep_raise_irq(struct pci_epc *epc, u8 func_no, enum pci_epc_irq_type type, u8 interrupt_num) { struct dw_pcie_ep *ep = epc_get_drvdata(epc); @@ -234,7 +229,7 @@ static int dw_pcie_ep_raise_irq(struct pci_epc *epc, if (!ep->ops->raise_irq) return -EINVAL; - return ep->ops->raise_irq(ep, type, interrupt_num); + return ep->ops->raise_irq(ep, func_no, type, interrupt_num); } static void dw_pcie_ep_stop(struct pci_epc *epc) @@ -272,10 +267,48 @@ static const struct pci_epc_ops epc_ops = { .stop = dw_pcie_ep_stop, }; +int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no, + u8 interrupt_num) +{ + struct dw_pcie *pci = to_dw_pcie_from_ep(ep); + struct pci_epc *epc = ep->epc; + u16 msg_ctrl, msg_data; + u32 msg_addr_lower, msg_addr_upper; + u64 msg_addr; + bool has_upper; + int ret; + + /* Raise MSI per the PCI Local Bus Specification Revision 3.0, 6.8.1. */ + msg_ctrl = dw_pcie_readw_dbi(pci, MSI_MESSAGE_CONTROL); + has_upper = !!(msg_ctrl & PCI_MSI_FLAGS_64BIT); + msg_addr_lower = dw_pcie_readl_dbi(pci, MSI_MESSAGE_ADDR_L32); + if (has_upper) { + msg_addr_upper = dw_pcie_readl_dbi(pci, MSI_MESSAGE_ADDR_U32); + msg_data = dw_pcie_readw_dbi(pci, MSI_MESSAGE_DATA_64); + } else { + msg_addr_upper = 0; + msg_data = dw_pcie_readw_dbi(pci, MSI_MESSAGE_DATA_32); + } + msg_addr = ((u64) msg_addr_upper) << 32 | msg_addr_lower; + ret = dw_pcie_ep_map_addr(epc, func_no, ep->msi_mem_phys, msg_addr, + epc->mem->page_size); + if (ret) + return ret; + + writel(msg_data | (interrupt_num - 1), ep->msi_mem); + + dw_pcie_ep_unmap_addr(epc, func_no, ep->msi_mem_phys); + + return 0; +} + void dw_pcie_ep_exit(struct dw_pcie_ep *ep) { struct pci_epc *epc = ep->epc; + pci_epc_mem_free_addr(epc, ep->msi_mem_phys, ep->msi_mem, + epc->mem->page_size); + pci_epc_mem_exit(epc); } @@ -298,12 +331,32 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) dev_err(dev, "unable to read *num-ib-windows* property\n"); return ret; } + if (ep->num_ib_windows > MAX_IATU_IN) { + dev_err(dev, "invalid *num-ib-windows*\n"); + return -EINVAL; + } ret = of_property_read_u32(np, "num-ob-windows", &ep->num_ob_windows); if (ret < 0) { dev_err(dev, "unable to read *num-ob-windows* property\n"); return ret; } + if (ep->num_ob_windows > MAX_IATU_OUT) { + dev_err(dev, "invalid *num-ob-windows*\n"); + return -EINVAL; + } + + ep->ib_window_map = devm_kzalloc(dev, sizeof(long) * + BITS_TO_LONGS(ep->num_ib_windows), + GFP_KERNEL); + if (!ep->ib_window_map) + return -ENOMEM; + + ep->ob_window_map = devm_kzalloc(dev, sizeof(long) * + BITS_TO_LONGS(ep->num_ob_windows), + GFP_KERNEL); + if (!ep->ob_window_map) + return -ENOMEM; addr = devm_kzalloc(dev, sizeof(phys_addr_t) * ep->num_ob_windows, GFP_KERNEL); @@ -331,6 +384,13 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) return ret; } + ep->msi_mem = pci_epc_mem_alloc_addr(epc, &ep->msi_mem_phys, + epc->mem->page_size); + if (!ep->msi_mem) { + dev_err(dev, "Failed to reserve memory for MSI\n"); + return -ENOMEM; + } + ep->epc = epc; epc_set_drvdata(epc, ep); dw_pcie_setup(pci); diff --git a/drivers/pci/dwc/pcie-designware-host.c b/drivers/pci/dwc/pcie-designware-host.c index 81e2157a7cfb..8de2d5c69b1d 100644 --- a/drivers/pci/dwc/pcie-designware-host.c +++ b/drivers/pci/dwc/pcie-designware-host.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Synopsys DesignWare PCIe host controller driver * @@ -5,10 +6,6 @@ * http://www.samsung.com * * Author: Jingoo Han <jg1.han@samsung.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/irqdomain.h> @@ -83,10 +80,19 @@ irqreturn_t dw_handle_msi_irq(struct pcie_port *pp) void dw_pcie_msi_init(struct pcie_port *pp) { + struct dw_pcie *pci = to_dw_pcie_from_pp(pp); + struct device *dev = pci->dev; + struct page *page; u64 msi_target; - pp->msi_data = __get_free_pages(GFP_KERNEL, 0); - msi_target = virt_to_phys((void *)pp->msi_data); + page = alloc_page(GFP_KERNEL); + pp->msi_data = dma_map_page(dev, page, 0, PAGE_SIZE, DMA_FROM_DEVICE); + if (dma_mapping_error(dev, pp->msi_data)) { + dev_err(dev, "failed to map MSI data\n"); + __free_page(page); + return; + } + msi_target = (u64)pp->msi_data; /* program the msi_data */ dw_pcie_wr_own_conf(pp, PCIE_MSI_ADDR_LO, 4, @@ -187,7 +193,7 @@ static void dw_msi_setup_msg(struct pcie_port *pp, unsigned int irq, u32 pos) if (pp->ops->get_msi_addr) msi_target = pp->ops->get_msi_addr(pp); else - msi_target = virt_to_phys((void *)pp->msi_data); + msi_target = (u64)pp->msi_data; msg.address_lo = (u32)(msi_target & 0xffffffff); msg.address_hi = (u32)(msi_target >> 32 & 0xffffffff); diff --git a/drivers/pci/dwc/pcie-designware-plat.c b/drivers/pci/dwc/pcie-designware-plat.c index 168e2380f493..ebdf28bcd67d 100644 --- a/drivers/pci/dwc/pcie-designware-plat.c +++ b/drivers/pci/dwc/pcie-designware-plat.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCIe RC driver for Synopsys DesignWare Core * * Copyright (C) 2015-2016 Synopsys, Inc. (www.synopsys.com) * * Authors: Joao Pinto <Joao.Pinto@synopsys.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/clk.h> #include <linux/delay.h> diff --git a/drivers/pci/dwc/pcie-designware.c b/drivers/pci/dwc/pcie-designware.c index 88abdddee2ad..1b7282e5b494 100644 --- a/drivers/pci/dwc/pcie-designware.c +++ b/drivers/pci/dwc/pcie-designware.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Synopsys DesignWare PCIe host controller driver * @@ -5,10 +6,6 @@ * http://www.samsung.com * * Author: Jingoo Han <jg1.han@samsung.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/delay.h> @@ -149,7 +146,7 @@ void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type, u32 retries, val; if (pci->ops->cpu_addr_fixup) - cpu_addr = pci->ops->cpu_addr_fixup(cpu_addr); + cpu_addr = pci->ops->cpu_addr_fixup(pci, cpu_addr); if (pci->iatu_unroll_enabled) { dw_pcie_prog_outbound_atu_unroll(pci, index, type, cpu_addr, diff --git a/drivers/pci/dwc/pcie-designware.h b/drivers/pci/dwc/pcie-designware.h index e5d9d77b778e..11b13864a406 100644 --- a/drivers/pci/dwc/pcie-designware.h +++ b/drivers/pci/dwc/pcie-designware.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Synopsys DesignWare PCIe host controller driver * @@ -5,15 +6,12 @@ * http://www.samsung.com * * Author: Jingoo Han <jg1.han@samsung.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #ifndef _PCIE_DESIGNWARE_H #define _PCIE_DESIGNWARE_H +#include <linux/dma-mapping.h> #include <linux/irq.h> #include <linux/msi.h> #include <linux/pci.h> @@ -100,10 +98,14 @@ #define MSI_MESSAGE_CONTROL 0x52 #define MSI_CAP_MMC_SHIFT 1 +#define MSI_CAP_MMC_MASK (7 << MSI_CAP_MMC_SHIFT) #define MSI_CAP_MME_SHIFT 4 +#define MSI_CAP_MSI_EN_MASK 0x1 #define MSI_CAP_MME_MASK (7 << MSI_CAP_MME_SHIFT) #define MSI_MESSAGE_ADDR_L32 0x54 #define MSI_MESSAGE_ADDR_U32 0x58 +#define MSI_MESSAGE_DATA_32 0x58 +#define MSI_MESSAGE_DATA_64 0x5C /* * Maximum number of MSI IRQs can be 256 per controller. But keep @@ -113,6 +115,10 @@ #define MAX_MSI_IRQS 32 #define MAX_MSI_CTRLS (MAX_MSI_IRQS / 32) +/* Maximum number of inbound/outbound iATUs */ +#define MAX_IATU_IN 256 +#define MAX_IATU_OUT 256 + struct pcie_port; struct dw_pcie; struct dw_pcie_ep; @@ -168,7 +174,7 @@ struct pcie_port { const struct dw_pcie_host_ops *ops; int msi_irq; struct irq_domain *irq_domain; - unsigned long msi_data; + dma_addr_t msi_data; DECLARE_BITMAP(msi_irq_in_use, MAX_MSI_IRQS); }; @@ -180,8 +186,8 @@ enum dw_pcie_as_type { struct dw_pcie_ep_ops { void (*ep_init)(struct dw_pcie_ep *ep); - int (*raise_irq)(struct dw_pcie_ep *ep, enum pci_epc_irq_type type, - u8 interrupt_num); + int (*raise_irq)(struct dw_pcie_ep *ep, u8 func_no, + enum pci_epc_irq_type type, u8 interrupt_num); }; struct dw_pcie_ep { @@ -192,14 +198,16 @@ struct dw_pcie_ep { size_t page_size; u8 bar_to_atu[6]; phys_addr_t *outbound_addr; - unsigned long ib_window_map; - unsigned long ob_window_map; + unsigned long *ib_window_map; + unsigned long *ob_window_map; u32 num_ib_windows; u32 num_ob_windows; + void __iomem *msi_mem; + phys_addr_t msi_mem_phys; }; struct dw_pcie_ops { - u64 (*cpu_addr_fixup)(u64 cpu_addr); + u64 (*cpu_addr_fixup)(struct dw_pcie *pcie, u64 cpu_addr); u32 (*read_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg, size_t size); void (*write_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg, @@ -334,6 +342,9 @@ static inline int dw_pcie_host_init(struct pcie_port *pp) void dw_pcie_ep_linkup(struct dw_pcie_ep *ep); int dw_pcie_ep_init(struct dw_pcie_ep *ep); void dw_pcie_ep_exit(struct dw_pcie_ep *ep); +int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no, + u8 interrupt_num); +void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar); #else static inline void dw_pcie_ep_linkup(struct dw_pcie_ep *ep) { @@ -347,5 +358,15 @@ static inline int dw_pcie_ep_init(struct dw_pcie_ep *ep) static inline void dw_pcie_ep_exit(struct dw_pcie_ep *ep) { } + +static inline int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no, + u8 interrupt_num) +{ + return 0; +} + +static inline void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar) +{ +} #endif #endif /* _PCIE_DESIGNWARE_H */ diff --git a/drivers/pci/dwc/pcie-hisi.c b/drivers/pci/dwc/pcie-hisi.c index a20179169e06..2658aaebb993 100644 --- a/drivers/pci/dwc/pcie-hisi.c +++ b/drivers/pci/dwc/pcie-hisi.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCIe host controller driver for HiSilicon SoCs * @@ -6,10 +7,6 @@ * Authors: Zhou Wang <wangzhou1@hisilicon.com> * Dacai Zhu <zhudacai@hisilicon.com> * Gabriele Paoloni <gabriele.paoloni@huawei.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/interrupt.h> #include <linux/init.h> diff --git a/drivers/pci/dwc/pcie-histb.c b/drivers/pci/dwc/pcie-histb.c index 33b01b734d7d..70b5c0b108bf 100644 --- a/drivers/pci/dwc/pcie-histb.c +++ b/drivers/pci/dwc/pcie-histb.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCIe host controller driver for HiSilicon STB SoCs * @@ -5,10 +6,6 @@ * * Authors: Ruqiang Ju <juruqiang@hisilicon.com> * Jianguo Sun <sunjianguo1@huawei.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/clk.h> diff --git a/drivers/pci/dwc/pcie-kirin.c b/drivers/pci/dwc/pcie-kirin.c index dc3033cf3c19..13d839bd6160 100644 --- a/drivers/pci/dwc/pcie-kirin.c +++ b/drivers/pci/dwc/pcie-kirin.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCIe host controller driver for Kirin Phone SoCs * @@ -5,10 +6,6 @@ * http://www.huawei.com * * Author: Xiaowei Song <songxiaowei@huawei.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <asm/compiler.h> diff --git a/drivers/pci/dwc/pcie-qcom.c b/drivers/pci/dwc/pcie-qcom.c index ce7ba5b7552a..6310c66e265c 100644 --- a/drivers/pci/dwc/pcie-qcom.c +++ b/drivers/pci/dwc/pcie-qcom.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Qualcomm PCIe root complex driver * @@ -5,15 +6,6 @@ * Copyright 2015 Linaro Limited. * * Author: Stanimir Varbanov <svarbanov@mm-sol.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/clk.h> @@ -171,7 +163,7 @@ struct qcom_pcie { union qcom_pcie_resources res; struct phy *phy; struct gpio_desc *reset; - struct qcom_pcie_ops *ops; + const struct qcom_pcie_ops *ops; }; #define to_qcom_pcie(x) dev_get_drvdata((x)->dev) @@ -1234,7 +1226,7 @@ static int qcom_pcie_probe(struct platform_device *pdev) pcie->pci = pci; - pcie->ops = (struct qcom_pcie_ops *)of_device_get_match_data(dev); + pcie->ops = of_device_get_match_data(dev); pcie->reset = devm_gpiod_get_optional(dev, "perst", GPIOD_OUT_LOW); if (IS_ERR(pcie->reset)) diff --git a/drivers/pci/dwc/pcie-spear13xx.c b/drivers/pci/dwc/pcie-spear13xx.c index 709189d23b31..ecb58f7b7566 100644 --- a/drivers/pci/dwc/pcie-spear13xx.c +++ b/drivers/pci/dwc/pcie-spear13xx.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCIe host controller driver for ST Microelectronics SPEAr13xx SoCs * @@ -6,10 +7,6 @@ * Copyright (C) 2010-2014 ST Microelectronics * Pratyush Anand <pratyush.anand@gmail.com> * Mohit Kumar <mohit.kumar.dhaka@gmail.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. */ #include <linux/clk.h> diff --git a/drivers/pci/ecam.c b/drivers/pci/ecam.c index c228a2eb7faa..1a81af0ba961 100644 --- a/drivers/pci/ecam.c +++ b/drivers/pci/ecam.c @@ -1,17 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright 2016 Broadcom - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, version 2, as - * published by the Free Software Foundation (the "GPL"). - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License version 2 (GPLv2) for more details. - * - * You should have received a copy of the GNU General Public License - * version 2 (GPLv2) along with this source code. */ #include <linux/device.h> diff --git a/drivers/pci/endpoint/Kconfig b/drivers/pci/endpoint/Kconfig index c09623ca8c3b..d1e7e4199432 100644 --- a/drivers/pci/endpoint/Kconfig +++ b/drivers/pci/endpoint/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # PCI Endpoint Support # diff --git a/drivers/pci/endpoint/Makefile b/drivers/pci/endpoint/Makefile index 1041f80a4645..95b2fe47e3b0 100644 --- a/drivers/pci/endpoint/Makefile +++ b/drivers/pci/endpoint/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # Makefile for PCI Endpoint Support # diff --git a/drivers/pci/endpoint/functions/Kconfig b/drivers/pci/endpoint/functions/Kconfig index 2942066607e0..8820d0f7ec77 100644 --- a/drivers/pci/endpoint/functions/Kconfig +++ b/drivers/pci/endpoint/functions/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # PCI Endpoint Functions # diff --git a/drivers/pci/endpoint/functions/Makefile b/drivers/pci/endpoint/functions/Makefile index 6d94a4801838..d6fafff080e2 100644 --- a/drivers/pci/endpoint/functions/Makefile +++ b/drivers/pci/endpoint/functions/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # Makefile for PCI Endpoint Functions # diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c index f9308c2f22e6..64d8a17f8094 100644 --- a/drivers/pci/endpoint/functions/pci-epf-test.c +++ b/drivers/pci/endpoint/functions/pci-epf-test.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /** * Test driver to test endpoint functionality * * Copyright (C) 2017 Texas Instruments * Author: Kishon Vijay Abraham I <kishon@ti.com> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 of - * the License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/crc32.h> @@ -104,7 +93,8 @@ static int pci_epf_test_copy(struct pci_epf_test *epf_test) goto err; } - ret = pci_epc_map_addr(epc, src_phys_addr, reg->src_addr, reg->size); + ret = pci_epc_map_addr(epc, epf->func_no, src_phys_addr, reg->src_addr, + reg->size); if (ret) { dev_err(dev, "failed to map source address\n"); reg->status = STATUS_SRC_ADDR_INVALID; @@ -119,7 +109,8 @@ static int pci_epf_test_copy(struct pci_epf_test *epf_test) goto err_src_map_addr; } - ret = pci_epc_map_addr(epc, dst_phys_addr, reg->dst_addr, reg->size); + ret = pci_epc_map_addr(epc, epf->func_no, dst_phys_addr, reg->dst_addr, + reg->size); if (ret) { dev_err(dev, "failed to map destination address\n"); reg->status = STATUS_DST_ADDR_INVALID; @@ -128,13 +119,13 @@ static int pci_epf_test_copy(struct pci_epf_test *epf_test) memcpy(dst_addr, src_addr, reg->size); - pci_epc_unmap_addr(epc, dst_phys_addr); + pci_epc_unmap_addr(epc, epf->func_no, dst_phys_addr); err_dst_addr: pci_epc_mem_free_addr(epc, dst_phys_addr, dst_addr, reg->size); err_src_map_addr: - pci_epc_unmap_addr(epc, src_phys_addr); + pci_epc_unmap_addr(epc, epf->func_no, src_phys_addr); err_src_addr: pci_epc_mem_free_addr(epc, src_phys_addr, src_addr, reg->size); @@ -164,7 +155,8 @@ static int pci_epf_test_read(struct pci_epf_test *epf_test) goto err; } - ret = pci_epc_map_addr(epc, phys_addr, reg->src_addr, reg->size); + ret = pci_epc_map_addr(epc, epf->func_no, phys_addr, reg->src_addr, + reg->size); if (ret) { dev_err(dev, "failed to map address\n"); reg->status = STATUS_SRC_ADDR_INVALID; @@ -186,7 +178,7 @@ static int pci_epf_test_read(struct pci_epf_test *epf_test) kfree(buf); err_map_addr: - pci_epc_unmap_addr(epc, phys_addr); + pci_epc_unmap_addr(epc, epf->func_no, phys_addr); err_addr: pci_epc_mem_free_addr(epc, phys_addr, src_addr, reg->size); @@ -215,7 +207,8 @@ static int pci_epf_test_write(struct pci_epf_test *epf_test) goto err; } - ret = pci_epc_map_addr(epc, phys_addr, reg->dst_addr, reg->size); + ret = pci_epc_map_addr(epc, epf->func_no, phys_addr, reg->dst_addr, + reg->size); if (ret) { dev_err(dev, "failed to map address\n"); reg->status = STATUS_DST_ADDR_INVALID; @@ -242,7 +235,7 @@ static int pci_epf_test_write(struct pci_epf_test *epf_test) kfree(buf); err_map_addr: - pci_epc_unmap_addr(epc, phys_addr); + pci_epc_unmap_addr(epc, epf->func_no, phys_addr); err_addr: pci_epc_mem_free_addr(epc, phys_addr, dst_addr, reg->size); @@ -260,11 +253,11 @@ static void pci_epf_test_raise_irq(struct pci_epf_test *epf_test, u8 irq) struct pci_epf_test_reg *reg = epf_test->reg[test_reg_bar]; reg->status |= STATUS_IRQ_RAISED; - msi_count = pci_epc_get_msi(epc); + msi_count = pci_epc_get_msi(epc, epf->func_no); if (irq > msi_count || msi_count <= 0) - pci_epc_raise_irq(epc, PCI_EPC_IRQ_LEGACY, 0); + pci_epc_raise_irq(epc, epf->func_no, PCI_EPC_IRQ_LEGACY, 0); else - pci_epc_raise_irq(epc, PCI_EPC_IRQ_MSI, irq); + pci_epc_raise_irq(epc, epf->func_no, PCI_EPC_IRQ_MSI, irq); } static void pci_epf_test_cmd_handler(struct work_struct *work) @@ -291,7 +284,7 @@ static void pci_epf_test_cmd_handler(struct work_struct *work) if (command & COMMAND_RAISE_LEGACY_IRQ) { reg->status = STATUS_IRQ_RAISED; - pci_epc_raise_irq(epc, PCI_EPC_IRQ_LEGACY, 0); + pci_epc_raise_irq(epc, epf->func_no, PCI_EPC_IRQ_LEGACY, 0); goto reset_handler; } @@ -326,11 +319,11 @@ static void pci_epf_test_cmd_handler(struct work_struct *work) } if (command & COMMAND_RAISE_MSI_IRQ) { - msi_count = pci_epc_get_msi(epc); + msi_count = pci_epc_get_msi(epc, epf->func_no); if (irq > msi_count || msi_count <= 0) goto reset_handler; reg->status = STATUS_IRQ_RAISED; - pci_epc_raise_irq(epc, PCI_EPC_IRQ_MSI, irq); + pci_epc_raise_irq(epc, epf->func_no, PCI_EPC_IRQ_MSI, irq); goto reset_handler; } @@ -358,7 +351,7 @@ static void pci_epf_test_unbind(struct pci_epf *epf) for (bar = BAR_0; bar <= BAR_5; bar++) { if (epf_test->reg[bar]) { pci_epf_free_space(epf, epf_test->reg[bar], bar); - pci_epc_clear_bar(epc, bar); + pci_epc_clear_bar(epc, epf->func_no, bar); } } } @@ -380,7 +373,8 @@ static int pci_epf_test_set_bar(struct pci_epf *epf) for (bar = BAR_0; bar <= BAR_5; bar++) { epf_bar = &epf->bar[bar]; - ret = pci_epc_set_bar(epc, bar, epf_bar->phys_addr, + ret = pci_epc_set_bar(epc, epf->func_no, bar, + epf_bar->phys_addr, epf_bar->size, flags); if (ret) { pci_epf_free_space(epf, epf_test->reg[bar], bar); @@ -433,7 +427,7 @@ static int pci_epf_test_bind(struct pci_epf *epf) if (WARN_ON_ONCE(!epc)) return -EINVAL; - ret = pci_epc_write_header(epc, header); + ret = pci_epc_write_header(epc, epf->func_no, header); if (ret) { dev_err(dev, "configuration header write failed\n"); return ret; @@ -447,7 +441,7 @@ static int pci_epf_test_bind(struct pci_epf *epf) if (ret) return ret; - ret = pci_epc_set_msi(epc, epf->msi_interrupts); + ret = pci_epc_set_msi(epc, epf->func_no, epf->msi_interrupts); if (ret) return ret; diff --git a/drivers/pci/endpoint/pci-ep-cfs.c b/drivers/pci/endpoint/pci-ep-cfs.c index 4f74386c1ced..018ea3433cb5 100644 --- a/drivers/pci/endpoint/pci-ep-cfs.c +++ b/drivers/pci/endpoint/pci-ep-cfs.c @@ -1,35 +1,28 @@ +// SPDX-License-Identifier: GPL-2.0 /** * configfs to configure the PCI endpoint * * Copyright (C) 2017 Texas Instruments * Author: Kishon Vijay Abraham I <kishon@ti.com> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 of - * the License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/module.h> +#include <linux/idr.h> #include <linux/slab.h> #include <linux/pci-epc.h> #include <linux/pci-epf.h> #include <linux/pci-ep-cfs.h> +static DEFINE_IDR(functions_idr); +static DEFINE_MUTEX(functions_mutex); static struct config_group *functions_group; static struct config_group *controllers_group; struct pci_epf_group { struct config_group group; struct pci_epf *epf; + int index; }; struct pci_epc_group { @@ -97,22 +90,23 @@ static int pci_epc_epf_link(struct config_item *epc_item, { int ret; u32 func_no = 0; - struct pci_epc *epc; - struct pci_epf *epf; struct pci_epf_group *epf_group = to_pci_epf_group(epf_item); struct pci_epc_group *epc_group = to_pci_epc_group(epc_item); - - epc = epc_group->epc; - epf = epf_group->epf; - ret = pci_epc_add_epf(epc, epf); - if (ret) - goto err_add_epf; + struct pci_epc *epc = epc_group->epc; + struct pci_epf *epf = epf_group->epf; func_no = find_first_zero_bit(&epc_group->function_num_map, - sizeof(epc_group->function_num_map)); + BITS_PER_LONG); + if (func_no >= BITS_PER_LONG) + return -EINVAL; + set_bit(func_no, &epc_group->function_num_map); epf->func_no = func_no; + ret = pci_epc_add_epf(epc, epf); + if (ret) + goto err_add_epf; + ret = pci_epf_bind(epf); if (ret) goto err_epf_bind; @@ -353,6 +347,9 @@ static void pci_epf_release(struct config_item *item) { struct pci_epf_group *epf_group = to_pci_epf_group(item); + mutex_lock(&functions_mutex); + idr_remove(&functions_idr, epf_group->index); + mutex_unlock(&functions_mutex); pci_epf_destroy(epf_group->epf); kfree(epf_group); } @@ -372,22 +369,57 @@ static struct config_group *pci_epf_make(struct config_group *group, { struct pci_epf_group *epf_group; struct pci_epf *epf; + char *epf_name; + int index, err; epf_group = kzalloc(sizeof(*epf_group), GFP_KERNEL); if (!epf_group) return ERR_PTR(-ENOMEM); + mutex_lock(&functions_mutex); + index = idr_alloc(&functions_idr, epf_group, 0, 0, GFP_KERNEL); + mutex_unlock(&functions_mutex); + if (index < 0) { + err = index; + goto free_group; + } + + epf_group->index = index; + config_group_init_type_name(&epf_group->group, name, &pci_epf_type); - epf = pci_epf_create(group->cg_item.ci_name); + epf_name = kasprintf(GFP_KERNEL, "%s.%d", + group->cg_item.ci_name, epf_group->index); + if (!epf_name) { + err = -ENOMEM; + goto remove_idr; + } + + epf = pci_epf_create(epf_name); if (IS_ERR(epf)) { pr_err("failed to create endpoint function device\n"); - return ERR_PTR(-EINVAL); + err = -EINVAL; + goto free_name; } epf_group->epf = epf; + kfree(epf_name); + return &epf_group->group; + +free_name: + kfree(epf_name); + +remove_idr: + mutex_lock(&functions_mutex); + idr_remove(&functions_idr, epf_group->index); + mutex_unlock(&functions_mutex); + +free_group: + kfree(epf_group); + + return ERR_PTR(err); } static void pci_epf_drop(struct config_group *group, struct config_item *item) diff --git a/drivers/pci/endpoint/pci-epc-core.c b/drivers/pci/endpoint/pci-epc-core.c index 42c2a1156325..e245bba0ab53 100644 --- a/drivers/pci/endpoint/pci-epc-core.c +++ b/drivers/pci/endpoint/pci-epc-core.c @@ -1,24 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0 /** * PCI Endpoint *Controller* (EPC) library * * Copyright (C) 2017 Texas Instruments * Author: Kishon Vijay Abraham I <kishon@ti.com> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 of - * the License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/device.h> -#include <linux/dma-mapping.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/of_device.h> @@ -142,25 +130,26 @@ EXPORT_SYMBOL_GPL(pci_epc_start); /** * pci_epc_raise_irq() - interrupt the host system * @epc: the EPC device which has to interrupt the host + * @func_no: the endpoint function number in the EPC device * @type: specify the type of interrupt; legacy or MSI * @interrupt_num: the MSI interrupt number * * Invoke to raise an MSI or legacy interrupt */ -int pci_epc_raise_irq(struct pci_epc *epc, enum pci_epc_irq_type type, - u8 interrupt_num) +int pci_epc_raise_irq(struct pci_epc *epc, u8 func_no, + enum pci_epc_irq_type type, u8 interrupt_num) { int ret; unsigned long flags; - if (IS_ERR(epc)) + if (IS_ERR_OR_NULL(epc) || func_no >= epc->max_functions) return -EINVAL; if (!epc->ops->raise_irq) return 0; spin_lock_irqsave(&epc->lock, flags); - ret = epc->ops->raise_irq(epc, type, interrupt_num); + ret = epc->ops->raise_irq(epc, func_no, type, interrupt_num); spin_unlock_irqrestore(&epc->lock, flags); return ret; @@ -170,22 +159,23 @@ EXPORT_SYMBOL_GPL(pci_epc_raise_irq); /** * pci_epc_get_msi() - get the number of MSI interrupt numbers allocated * @epc: the EPC device to which MSI interrupts was requested + * @func_no: the endpoint function number in the EPC device * * Invoke to get the number of MSI interrupts allocated by the RC */ -int pci_epc_get_msi(struct pci_epc *epc) +int pci_epc_get_msi(struct pci_epc *epc, u8 func_no) { int interrupt; unsigned long flags; - if (IS_ERR(epc)) + if (IS_ERR_OR_NULL(epc) || func_no >= epc->max_functions) return 0; if (!epc->ops->get_msi) return 0; spin_lock_irqsave(&epc->lock, flags); - interrupt = epc->ops->get_msi(epc); + interrupt = epc->ops->get_msi(epc, func_no); spin_unlock_irqrestore(&epc->lock, flags); if (interrupt < 0) @@ -200,17 +190,18 @@ EXPORT_SYMBOL_GPL(pci_epc_get_msi); /** * pci_epc_set_msi() - set the number of MSI interrupt numbers required * @epc: the EPC device on which MSI has to be configured + * @func_no: the endpoint function number in the EPC device * @interrupts: number of MSI interrupts required by the EPF * * Invoke to set the required number of MSI interrupts. */ -int pci_epc_set_msi(struct pci_epc *epc, u8 interrupts) +int pci_epc_set_msi(struct pci_epc *epc, u8 func_no, u8 interrupts) { int ret; u8 encode_int; unsigned long flags; - if (IS_ERR(epc)) + if (IS_ERR_OR_NULL(epc) || func_no >= epc->max_functions) return -EINVAL; if (!epc->ops->set_msi) @@ -219,7 +210,7 @@ int pci_epc_set_msi(struct pci_epc *epc, u8 interrupts) encode_int = order_base_2(interrupts); spin_lock_irqsave(&epc->lock, flags); - ret = epc->ops->set_msi(epc, encode_int); + ret = epc->ops->set_msi(epc, func_no, encode_int); spin_unlock_irqrestore(&epc->lock, flags); return ret; @@ -229,22 +220,24 @@ EXPORT_SYMBOL_GPL(pci_epc_set_msi); /** * pci_epc_unmap_addr() - unmap CPU address from PCI address * @epc: the EPC device on which address is allocated + * @func_no: the endpoint function number in the EPC device * @phys_addr: physical address of the local system * * Invoke to unmap the CPU address from PCI address. */ -void pci_epc_unmap_addr(struct pci_epc *epc, phys_addr_t phys_addr) +void pci_epc_unmap_addr(struct pci_epc *epc, u8 func_no, + phys_addr_t phys_addr) { unsigned long flags; - if (IS_ERR(epc)) + if (IS_ERR_OR_NULL(epc) || func_no >= epc->max_functions) return; if (!epc->ops->unmap_addr) return; spin_lock_irqsave(&epc->lock, flags); - epc->ops->unmap_addr(epc, phys_addr); + epc->ops->unmap_addr(epc, func_no, phys_addr); spin_unlock_irqrestore(&epc->lock, flags); } EXPORT_SYMBOL_GPL(pci_epc_unmap_addr); @@ -252,26 +245,27 @@ EXPORT_SYMBOL_GPL(pci_epc_unmap_addr); /** * pci_epc_map_addr() - map CPU address to PCI address * @epc: the EPC device on which address is allocated + * @func_no: the endpoint function number in the EPC device * @phys_addr: physical address of the local system * @pci_addr: PCI address to which the physical address should be mapped * @size: the size of the allocation * * Invoke to map CPU address with PCI address. */ -int pci_epc_map_addr(struct pci_epc *epc, phys_addr_t phys_addr, - u64 pci_addr, size_t size) +int pci_epc_map_addr(struct pci_epc *epc, u8 func_no, + phys_addr_t phys_addr, u64 pci_addr, size_t size) { int ret; unsigned long flags; - if (IS_ERR(epc)) + if (IS_ERR_OR_NULL(epc) || func_no >= epc->max_functions) return -EINVAL; if (!epc->ops->map_addr) return 0; spin_lock_irqsave(&epc->lock, flags); - ret = epc->ops->map_addr(epc, phys_addr, pci_addr, size); + ret = epc->ops->map_addr(epc, func_no, phys_addr, pci_addr, size); spin_unlock_irqrestore(&epc->lock, flags); return ret; @@ -281,22 +275,23 @@ EXPORT_SYMBOL_GPL(pci_epc_map_addr); /** * pci_epc_clear_bar() - reset the BAR * @epc: the EPC device for which the BAR has to be cleared + * @func_no: the endpoint function number in the EPC device * @bar: the BAR number that has to be reset * * Invoke to reset the BAR of the endpoint device. */ -void pci_epc_clear_bar(struct pci_epc *epc, int bar) +void pci_epc_clear_bar(struct pci_epc *epc, u8 func_no, int bar) { unsigned long flags; - if (IS_ERR(epc)) + if (IS_ERR_OR_NULL(epc) || func_no >= epc->max_functions) return; if (!epc->ops->clear_bar) return; spin_lock_irqsave(&epc->lock, flags); - epc->ops->clear_bar(epc, bar); + epc->ops->clear_bar(epc, func_no, bar); spin_unlock_irqrestore(&epc->lock, flags); } EXPORT_SYMBOL_GPL(pci_epc_clear_bar); @@ -304,26 +299,27 @@ EXPORT_SYMBOL_GPL(pci_epc_clear_bar); /** * pci_epc_set_bar() - configure BAR in order for host to assign PCI addr space * @epc: the EPC device on which BAR has to be configured + * @func_no: the endpoint function number in the EPC device * @bar: the BAR number that has to be configured * @size: the size of the addr space * @flags: specify memory allocation/io allocation/32bit address/64 bit address * * Invoke to configure the BAR of the endpoint device. */ -int pci_epc_set_bar(struct pci_epc *epc, enum pci_barno bar, +int pci_epc_set_bar(struct pci_epc *epc, u8 func_no, enum pci_barno bar, dma_addr_t bar_phys, size_t size, int flags) { int ret; unsigned long irq_flags; - if (IS_ERR(epc)) + if (IS_ERR_OR_NULL(epc) || func_no >= epc->max_functions) return -EINVAL; if (!epc->ops->set_bar) return 0; spin_lock_irqsave(&epc->lock, irq_flags); - ret = epc->ops->set_bar(epc, bar, bar_phys, size, flags); + ret = epc->ops->set_bar(epc, func_no, bar, bar_phys, size, flags); spin_unlock_irqrestore(&epc->lock, irq_flags); return ret; @@ -333,6 +329,7 @@ EXPORT_SYMBOL_GPL(pci_epc_set_bar); /** * pci_epc_write_header() - write standard configuration header * @epc: the EPC device to which the configuration header should be written + * @func_no: the endpoint function number in the EPC device * @header: standard configuration header fields * * Invoke to write the configuration header to the endpoint controller. Every @@ -340,19 +337,20 @@ EXPORT_SYMBOL_GPL(pci_epc_set_bar); * configuration header would be written. The callback function should write * the header fields to this dedicated location. */ -int pci_epc_write_header(struct pci_epc *epc, struct pci_epf_header *header) +int pci_epc_write_header(struct pci_epc *epc, u8 func_no, + struct pci_epf_header *header) { int ret; unsigned long flags; - if (IS_ERR(epc)) + if (IS_ERR_OR_NULL(epc) || func_no >= epc->max_functions) return -EINVAL; if (!epc->ops->write_header) return 0; spin_lock_irqsave(&epc->lock, flags); - ret = epc->ops->write_header(epc, header); + ret = epc->ops->write_header(epc, func_no, header); spin_unlock_irqrestore(&epc->lock, flags); return ret; @@ -371,7 +369,6 @@ EXPORT_SYMBOL_GPL(pci_epc_write_header); int pci_epc_add_epf(struct pci_epc *epc, struct pci_epf *epf) { unsigned long flags; - struct device *dev = epc->dev.parent; if (epf->epc) return -EBUSY; @@ -383,12 +380,6 @@ int pci_epc_add_epf(struct pci_epc *epc, struct pci_epf *epf) return -EINVAL; epf->epc = epc; - if (dev->of_node) { - of_dma_configure(&epf->dev, dev->of_node); - } else { - dma_set_coherent_mask(&epf->dev, epc->dev.coherent_dma_mask); - epf->dev.dma_mask = epc->dev.dma_mask; - } spin_lock_irqsave(&epc->lock, flags); list_add_tail(&epf->list, &epc->pci_epf); @@ -503,9 +494,7 @@ __pci_epc_create(struct device *dev, const struct pci_epc_ops *ops, INIT_LIST_HEAD(&epc->pci_epf); device_initialize(&epc->dev); - dma_set_coherent_mask(&epc->dev, dev->coherent_dma_mask); epc->dev.class = pci_epc_class; - epc->dev.dma_mask = dev->dma_mask; epc->dev.parent = dev; epc->ops = ops; diff --git a/drivers/pci/endpoint/pci-epc-mem.c b/drivers/pci/endpoint/pci-epc-mem.c index 83b7d5d3fc3e..2bf8bd1f0563 100644 --- a/drivers/pci/endpoint/pci-epc-mem.c +++ b/drivers/pci/endpoint/pci-epc-mem.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /** * PCI Endpoint *Controller* Address Space Management * * Copyright (C) 2017 Texas Instruments * Author: Kishon Vijay Abraham I <kishon@ti.com> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 of - * the License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/io.h> diff --git a/drivers/pci/endpoint/pci-epf-core.c b/drivers/pci/endpoint/pci-epf-core.c index ae1611a62808..766ce1dca2ec 100644 --- a/drivers/pci/endpoint/pci-epf-core.c +++ b/drivers/pci/endpoint/pci-epf-core.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /** * PCI Endpoint *Function* (EPF) library * * Copyright (C) 2017 Texas Instruments * Author: Kishon Vijay Abraham I <kishon@ti.com> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 of - * the License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/device.h> @@ -99,7 +88,7 @@ EXPORT_SYMBOL_GPL(pci_epf_bind); */ void pci_epf_free_space(struct pci_epf *epf, void *addr, enum pci_barno bar) { - struct device *dev = &epf->dev; + struct device *dev = epf->epc->dev.parent; if (!addr) return; @@ -122,7 +111,7 @@ EXPORT_SYMBOL_GPL(pci_epf_free_space); void *pci_epf_alloc_space(struct pci_epf *epf, size_t size, enum pci_barno bar) { void *space; - struct device *dev = &epf->dev; + struct device *dev = epf->epc->dev.parent; dma_addr_t phys_addr; if (size < 128) diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c index add66236215c..ac8d81268296 100644 --- a/drivers/pci/host-bridge.c +++ b/drivers/pci/host-bridge.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * host bridge related code */ diff --git a/drivers/pci/host/Kconfig b/drivers/pci/host/Kconfig index 38d12980db0f..a4ed7484d127 100644 --- a/drivers/pci/host/Kconfig +++ b/drivers/pci/host/Kconfig @@ -1,3 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + menu "PCI host controller drivers" depends on PCI diff --git a/drivers/pci/host/Makefile b/drivers/pci/host/Makefile index 34ec1d88f961..3b1059190867 100644 --- a/drivers/pci/host/Makefile +++ b/drivers/pci/host/Makefile @@ -34,6 +34,8 @@ obj-$(CONFIG_VMD) += vmd.o # ARM64 and use internal ifdefs to only build the pieces we need # depending on whether ACPI, the DT driver, or both are enabled. +ifdef CONFIG_PCI obj-$(CONFIG_ARM64) += pci-thunder-ecam.o obj-$(CONFIG_ARM64) += pci-thunder-pem.o obj-$(CONFIG_ARM64) += pci-xgene.o +endif diff --git a/drivers/pci/host/pci-aardvark.c b/drivers/pci/host/pci-aardvark.c index 26ed0c08f209..b04d37b3c5de 100644 --- a/drivers/pci/host/pci-aardvark.c +++ b/drivers/pci/host/pci-aardvark.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Driver for the Aardvark PCIe controller, used on Marvell Armada * 3700. @@ -5,10 +6,6 @@ * Copyright (C) 2016 Marvell * * Author: Hezi Shahmoon <hezi.shahmoon@marvell.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. */ #include <linux/delay.h> diff --git a/drivers/pci/host/pci-host-common.c b/drivers/pci/host/pci-host-common.c index 44a47d4f0b8f..5d028f53fdcd 100644 --- a/drivers/pci/host/pci-host-common.c +++ b/drivers/pci/host/pci-host-common.c @@ -1,18 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Generic PCI host driver common code * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - * * Copyright (C) 2014 ARM Limited * * Author: Will Deacon <will.deacon@arm.com> @@ -24,50 +13,6 @@ #include <linux/pci-ecam.h> #include <linux/platform_device.h> -static int gen_pci_parse_request_of_pci_ranges(struct device *dev, - struct list_head *resources, struct resource **bus_range) -{ - int err, res_valid = 0; - struct device_node *np = dev->of_node; - resource_size_t iobase; - struct resource_entry *win, *tmp; - - err = of_pci_get_host_bridge_resources(np, 0, 0xff, resources, &iobase); - if (err) - return err; - - err = devm_request_pci_bus_resources(dev, resources); - if (err) - return err; - - resource_list_for_each_entry_safe(win, tmp, resources) { - struct resource *res = win->res; - - switch (resource_type(res)) { - case IORESOURCE_IO: - err = pci_remap_iospace(res, iobase); - if (err) { - dev_warn(dev, "error %d: failed to map resource %pR\n", - err, res); - resource_list_destroy_entry(win); - } - break; - case IORESOURCE_MEM: - res_valid |= !(res->flags & IORESOURCE_PREFETCH); - break; - case IORESOURCE_BUS: - *bus_range = res; - break; - } - } - - if (res_valid) - return 0; - - dev_err(dev, "non-prefetchable memory resource required\n"); - return -EINVAL; -} - static void gen_pci_unmap_cfg(void *ptr) { pci_ecam_free((struct pci_config_window *)ptr); @@ -82,9 +27,9 @@ static struct pci_config_window *gen_pci_init(struct device *dev, struct pci_config_window *cfg; /* Parse our PCI ranges and request their resources */ - err = gen_pci_parse_request_of_pci_ranges(dev, resources, &bus_range); + err = pci_parse_request_of_pci_ranges(dev, resources, &bus_range); if (err) - goto err_out; + return ERR_PTR(err); err = of_address_to_resource(dev->of_node, 0, &cfgres); if (err) { @@ -116,7 +61,6 @@ int pci_host_common_probe(struct platform_device *pdev, const char *type; struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; - struct pci_bus *bus, *child; struct pci_host_bridge *bridge; struct pci_config_window *cfg; struct list_head resources; @@ -135,14 +79,13 @@ int pci_host_common_probe(struct platform_device *pdev, of_pci_check_probe_only(); /* Parse and map our Configuration Space windows */ - INIT_LIST_HEAD(&resources); cfg = gen_pci_init(dev, &resources, ops); if (IS_ERR(cfg)) return PTR_ERR(cfg); /* Do not reassign resources if probe only */ if (!pci_has_flag(PCI_PROBE_ONLY)) - pci_add_flags(PCI_REASSIGN_ALL_RSRC | PCI_REASSIGN_ALL_BUS); + pci_add_flags(PCI_REASSIGN_ALL_BUS); list_splice_init(&resources, &bridge->windows); bridge->dev.parent = dev; @@ -152,29 +95,11 @@ int pci_host_common_probe(struct platform_device *pdev, bridge->map_irq = of_irq_parse_and_map_pci; bridge->swizzle_irq = pci_common_swizzle; - ret = pci_scan_root_bus_bridge(bridge); + ret = pci_host_probe(bridge); if (ret < 0) { - dev_err(dev, "Scanning root bridge failed"); + pci_free_resource_list(&resources); return ret; } - bus = bridge->bus; - - /* - * We insert PCI resources into the iomem_resource and - * ioport_resource trees in either pci_bus_claim_resources() - * or pci_bus_assign_resources(). - */ - if (pci_has_flag(PCI_PROBE_ONLY)) { - pci_bus_claim_resources(bus); - } else { - pci_bus_size_bridges(bus); - pci_bus_assign_resources(bus); - - list_for_each_entry(child, &bus->children, node) - pcie_bus_configure_settings(child); - } - - pci_bus_add_devices(bus); return 0; } diff --git a/drivers/pci/host/pci-host-generic.c b/drivers/pci/host/pci-host-generic.c index 2f05511ce718..45319ee3b484 100644 --- a/drivers/pci/host/pci-host-generic.c +++ b/drivers/pci/host/pci-host-generic.c @@ -1,19 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Simple, generic PCI host controller driver targetting firmware-initialised * systems and virtual machines (e.g. the PCI emulation provided by kvmtool). * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - * * Copyright (C) 2014 ARM Limited * * Author: Will Deacon <will.deacon@arm.com> diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/host/pci-hyperv.c index 6b8d060d07de..2faf38eab785 100644 --- a/drivers/pci/host/pci-hyperv.c +++ b/drivers/pci/host/pci-hyperv.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) Microsoft Corporation. * @@ -34,17 +35,6 @@ * read and write handlers for config space must be aware of this mechanism. * Similarly, device setup and teardown involves messages sent to and from * the PCI back-end driver in Hyper-V. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * */ #include <linux/kernel.h> diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/host/pci-mvebu.c index 8d88f19dc171..5d4dccfc9d81 100644 --- a/drivers/pci/host/pci-mvebu.c +++ b/drivers/pci/host/pci-mvebu.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCIe driver for Marvell Armada 370 and Armada XP SoCs * * Author: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. */ #include <linux/kernel.h> diff --git a/drivers/pci/host/pci-rcar-gen2.c b/drivers/pci/host/pci-rcar-gen2.c index e46de69f0380..a28370bb2b2a 100644 --- a/drivers/pci/host/pci-rcar-gen2.c +++ b/drivers/pci/host/pci-rcar-gen2.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * pci-rcar-gen2: internal PCI bus support * @@ -5,10 +6,6 @@ * Copyright (C) 2013 Cogent Embedded, Inc. * * Author: Valentine Barshak <valentine.barshak@cogentembedded.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/delay.h> diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c index f9d3960dc39f..dd9b3bcc41c3 100644 --- a/drivers/pci/host/pci-tegra.c +++ b/drivers/pci/host/pci-tegra.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * PCIe host controller driver for Tegra SoCs * @@ -10,20 +11,6 @@ * Bits taken from arch/arm/mach-dove/pcie.c * * Author: Thierry Reding <treding@nvidia.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include <linux/clk.h> @@ -269,11 +256,10 @@ struct tegra_pcie { void __iomem *pads; void __iomem *afi; + void __iomem *cfg; int irq; - struct list_head buses; - struct resource *cs; - + struct resource cs; struct resource io; struct resource pio; struct resource mem; @@ -322,7 +308,6 @@ struct tegra_pcie_port { }; struct tegra_pcie_bus { - struct vm_struct *area; struct list_head list; unsigned int nr; }; @@ -362,109 +347,26 @@ static inline u32 pads_readl(struct tegra_pcie *pcie, unsigned long offset) * * Mapping the whole extended configuration space would require 256 MiB of * virtual address space, only a small part of which will actually be used. - * To work around this, a 1 MiB of virtual addresses are allocated per bus - * when the bus is first accessed. When the physical range is mapped, the - * the bus number bits are hidden so that the extended register number bits - * appear as bits [19:16]. Therefore the virtual mapping looks like this: * - * [19:16] extended register number - * [15:11] device number - * [10: 8] function number - * [ 7: 0] register number - * - * This is achieved by stitching together 16 chunks of 64 KiB of physical - * address space via the MMU. + * To work around this, a 4 KiB region is used to generate the required + * configuration transaction with relevant B:D:F and register offset values. + * This is achieved by dynamically programming base address and size of + * AFI_AXI_BAR used for end point config space mapping to make sure that the + * address (access to which generates correct config transaction) falls in + * this 4 KiB region. */ -static unsigned long tegra_pcie_conf_offset(unsigned int devfn, int where) -{ - return ((where & 0xf00) << 8) | (PCI_SLOT(devfn) << 11) | - (PCI_FUNC(devfn) << 8) | (where & 0xfc); -} - -static struct tegra_pcie_bus *tegra_pcie_bus_alloc(struct tegra_pcie *pcie, - unsigned int busnr) -{ - struct device *dev = pcie->dev; - pgprot_t prot = pgprot_noncached(PAGE_KERNEL); - phys_addr_t cs = pcie->cs->start; - struct tegra_pcie_bus *bus; - unsigned int i; - int err; - - bus = kzalloc(sizeof(*bus), GFP_KERNEL); - if (!bus) - return ERR_PTR(-ENOMEM); - - INIT_LIST_HEAD(&bus->list); - bus->nr = busnr; - - /* allocate 1 MiB of virtual addresses */ - bus->area = get_vm_area(SZ_1M, VM_IOREMAP); - if (!bus->area) { - err = -ENOMEM; - goto free; - } - - /* map each of the 16 chunks of 64 KiB each */ - for (i = 0; i < 16; i++) { - unsigned long virt = (unsigned long)bus->area->addr + - i * SZ_64K; - phys_addr_t phys = cs + i * SZ_16M + busnr * SZ_64K; - - err = ioremap_page_range(virt, virt + SZ_64K, phys, prot); - if (err < 0) { - dev_err(dev, "ioremap_page_range() failed: %d\n", err); - goto unmap; - } - } - - return bus; - -unmap: - vunmap(bus->area->addr); -free: - kfree(bus); - return ERR_PTR(err); -} - -static int tegra_pcie_add_bus(struct pci_bus *bus) -{ - struct pci_host_bridge *host = pci_find_host_bridge(bus); - struct tegra_pcie *pcie = pci_host_bridge_priv(host); - struct tegra_pcie_bus *b; - - b = tegra_pcie_bus_alloc(pcie, bus->number); - if (IS_ERR(b)) - return PTR_ERR(b); - - list_add_tail(&b->list, &pcie->buses); - - return 0; -} - -static void tegra_pcie_remove_bus(struct pci_bus *child) +static unsigned int tegra_pcie_conf_offset(u8 bus, unsigned int devfn, + unsigned int where) { - struct pci_host_bridge *host = pci_find_host_bridge(child); - struct tegra_pcie *pcie = pci_host_bridge_priv(host); - struct tegra_pcie_bus *bus, *tmp; - - list_for_each_entry_safe(bus, tmp, &pcie->buses, list) { - if (bus->nr == child->number) { - vunmap(bus->area->addr); - list_del(&bus->list); - kfree(bus); - break; - } - } + return ((where & 0xf00) << 16) | (bus << 16) | (PCI_SLOT(devfn) << 11) | + (PCI_FUNC(devfn) << 8) | (where & 0xff); } static void __iomem *tegra_pcie_map_bus(struct pci_bus *bus, unsigned int devfn, int where) { - struct pci_host_bridge *host = pci_find_host_bridge(bus); - struct tegra_pcie *pcie = pci_host_bridge_priv(host); - struct device *dev = pcie->dev; + struct tegra_pcie *pcie = bus->sysdata; void __iomem *addr = NULL; if (bus->number == 0) { @@ -478,19 +380,17 @@ static void __iomem *tegra_pcie_map_bus(struct pci_bus *bus, } } } else { - struct tegra_pcie_bus *b; + unsigned int offset; + u32 base; - list_for_each_entry(b, &pcie->buses, list) - if (b->nr == bus->number) - addr = (void __iomem *)b->area->addr; + offset = tegra_pcie_conf_offset(bus->number, devfn, where); - if (!addr) { - dev_err(dev, "failed to map cfg. space for bus %u\n", - bus->number); - return NULL; - } + /* move 4 KiB window to offset within the FPCI region */ + base = 0xfe100000 + ((offset & ~(SZ_4K - 1)) >> 8); + afi_writel(pcie, base, AFI_FPCI_BAR0); - addr += tegra_pcie_conf_offset(devfn, where); + /* move to correct offset within the 4 KiB page */ + addr = pcie->cfg + (offset & (SZ_4K - 1)); } return addr; @@ -517,8 +417,6 @@ static int tegra_pcie_config_write(struct pci_bus *bus, unsigned int devfn, } static struct pci_ops tegra_pcie_ops = { - .add_bus = tegra_pcie_add_bus, - .remove_bus = tegra_pcie_remove_bus, .map_bus = tegra_pcie_map_bus, .read = tegra_pcie_config_read, .write = tegra_pcie_config_write, @@ -661,8 +559,7 @@ static int tegra_pcie_request_resources(struct tegra_pcie *pcie) static int tegra_pcie_map_irq(const struct pci_dev *pdev, u8 slot, u8 pin) { - struct pci_host_bridge *host = pci_find_host_bridge(pdev->bus); - struct tegra_pcie *pcie = pci_host_bridge_priv(host); + struct tegra_pcie *pcie = pdev->bus->sysdata; int irq; tegra_cpuidle_pcie_irqs_in_use(); @@ -743,12 +640,9 @@ static void tegra_pcie_setup_translations(struct tegra_pcie *pcie) u32 fpci_bar, size, axi_address; /* Bar 0: type 1 extended configuration space */ - fpci_bar = 0xfe100000; - size = resource_size(pcie->cs); - axi_address = pcie->cs->start; - afi_writel(pcie, axi_address, AFI_AXI_BAR0_START); + size = resource_size(&pcie->cs); + afi_writel(pcie, pcie->cs.start, AFI_AXI_BAR0_START); afi_writel(pcie, size >> 12, AFI_AXI_BAR0_SZ); - afi_writel(pcie, fpci_bar, AFI_FPCI_BAR0); /* Bar 1: downstream IO bar */ fpci_bar = 0xfdfc0000; @@ -1353,10 +1247,14 @@ static int tegra_pcie_get_resources(struct tegra_pcie *pcie) goto poweroff; } - pcie->cs = devm_request_mem_region(dev, res->start, - resource_size(res), res->name); - if (!pcie->cs) { - err = -EADDRNOTAVAIL; + pcie->cs = *res; + + /* constrain configuration space to 4 KiB */ + pcie->cs.end = pcie->cs.start + SZ_4K - 1; + + pcie->cfg = devm_ioremap_resource(dev, &pcie->cs); + if (IS_ERR(pcie->cfg)) { + err = PTR_ERR(pcie->cfg); goto poweroff; } @@ -2345,9 +2243,9 @@ static int tegra_pcie_probe(struct platform_device *pdev) return -ENOMEM; pcie = pci_host_bridge_priv(host); + host->sysdata = pcie; pcie->soc = of_device_get_match_data(dev); - INIT_LIST_HEAD(&pcie->buses); INIT_LIST_HEAD(&pcie->ports); pcie->dev = dev; @@ -2382,7 +2280,6 @@ static int tegra_pcie_probe(struct platform_device *pdev) tegra_pcie_enable_ports(pcie); - pci_add_flags(PCI_REASSIGN_ALL_RSRC | PCI_REASSIGN_ALL_BUS); host->busnr = pcie->busn.start; host->dev.parent = &pdev->dev; host->ops = &tegra_pcie_ops; diff --git a/drivers/pci/host/pci-thunder-ecam.c b/drivers/pci/host/pci-thunder-ecam.c index fc0ca03f280e..32d1d7b81ef4 100644 --- a/drivers/pci/host/pci-thunder-ecam.c +++ b/drivers/pci/host/pci-thunder-ecam.c @@ -1,8 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0 /* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * * Copyright (C) 2015, 2016 Cavium, Inc. */ diff --git a/drivers/pci/host/pci-thunder-pem.c b/drivers/pci/host/pci-thunder-pem.c index 6e066f8b74df..f127ce8bd4ef 100644 --- a/drivers/pci/host/pci-thunder-pem.c +++ b/drivers/pci/host/pci-thunder-pem.c @@ -1,16 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0 /* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - * * Copyright (C) 2015 - 2016 Cavium, Inc. */ diff --git a/drivers/pci/host/pci-v3-semi.c b/drivers/pci/host/pci-v3-semi.c index 02f6e1e3a421..7fef64869d19 100644 --- a/drivers/pci/host/pci-v3-semi.c +++ b/drivers/pci/host/pci-v3-semi.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Support for V3 Semiconductor PCI Local Bus to PCI Bridge * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org> diff --git a/drivers/pci/host/pci-versatile.c b/drivers/pci/host/pci-versatile.c index d417acab0ecf..5b3876f5312b 100644 --- a/drivers/pci/host/pci-versatile.c +++ b/drivers/pci/host/pci-versatile.c @@ -1,18 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright 2004 Koninklijke Philips Electronics NV * * Conversion to platform driver and DT: * Copyright 2014 Linaro Ltd. * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * * 14/04/2005 Initial version, colin.king@philips.com */ #include <linux/kernel.h> @@ -202,7 +194,7 @@ static int versatile_pci_probe(struct platform_device *pdev) writel(0, versatile_cfg_base[0] + PCI_INTERRUPT_LINE); pci_add_flags(PCI_ENABLE_PROC_DOMAINS); - pci_add_flags(PCI_REASSIGN_ALL_BUS | PCI_REASSIGN_ALL_RSRC); + pci_add_flags(PCI_REASSIGN_ALL_BUS); list_splice_init(&pci_res, &bridge->windows); bridge->dev.parent = dev; diff --git a/drivers/pci/host/pci-xgene-msi.c b/drivers/pci/host/pci-xgene-msi.c index 1f42a202b021..df8e4bd5ddb2 100644 --- a/drivers/pci/host/pci-xgene-msi.c +++ b/drivers/pci/host/pci-xgene-msi.c @@ -1,19 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * APM X-Gene MSI Driver * * Copyright (c) 2014, Applied Micro Circuits Corporation * Author: Tanmay Inamdar <tinamdar@apm.com> * Duc Dang <dhdang@apm.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/cpu.h> #include <linux/interrupt.h> diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c index 465aa2a1b38d..0a0d7ee6d3c9 100644 --- a/drivers/pci/host/pci-xgene.c +++ b/drivers/pci/host/pci-xgene.c @@ -1,20 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /** * APM X-Gene PCIe Driver * * Copyright (c) 2014 Applied Micro Circuits Corporation. * * Author: Tanmay Inamdar <tinamdar@apm.com>. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * */ #include <linux/clk.h> #include <linux/delay.h> @@ -668,7 +658,6 @@ static int xgene_pcie_probe(struct platform_device *pdev) bus = bridge->bus; - pci_scan_child_bus(bus); pci_assign_unassigned_bus_resources(bus); list_for_each_entry(child, &bus->children, node) pcie_bus_configure_settings(child); diff --git a/drivers/pci/host/pcie-altera-msi.c b/drivers/pci/host/pcie-altera-msi.c index d8141f4865de..025ef7d9a046 100644 --- a/drivers/pci/host/pcie-altera-msi.c +++ b/drivers/pci/host/pcie-altera-msi.c @@ -1,21 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Altera PCIe MSI support * * Author: Ley Foon Tan <lftan@altera.com> * * Copyright Altera Corporation (C) 2013-2015. All rights reserved - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/interrupt.h> diff --git a/drivers/pci/host/pcie-altera.c b/drivers/pci/host/pcie-altera.c index 5cc4f594d79a..2235f4760951 100644 --- a/drivers/pci/host/pcie-altera.c +++ b/drivers/pci/host/pcie-altera.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright Altera Corporation (C) 2013-2015. All rights reserved * * Author: Ley Foon Tan <lftan@altera.com> * Description: Altera PCIe host controller driver - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/delay.h> diff --git a/drivers/pci/host/pcie-iproc-bcma.c b/drivers/pci/host/pcie-iproc-bcma.c index f03d5e3612e9..603c83429cb3 100644 --- a/drivers/pci/host/pcie-iproc-bcma.c +++ b/drivers/pci/host/pcie-iproc-bcma.c @@ -1,15 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2015 Broadcom Corporation * Copyright (C) 2015 Hauke Mehrtens <hauke@hauke-m.de> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation version 2. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/kernel.h> diff --git a/drivers/pci/host/pcie-iproc-msi.c b/drivers/pci/host/pcie-iproc-msi.c index 990fc906d73d..9deb56989d72 100644 --- a/drivers/pci/host/pcie-iproc-msi.c +++ b/drivers/pci/host/pcie-iproc-msi.c @@ -1,14 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2015 Broadcom Corporation - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation version 2. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/interrupt.h> diff --git a/drivers/pci/host/pcie-iproc-platform.c b/drivers/pci/host/pcie-iproc-platform.c index a5073a921a04..e764a2a2693c 100644 --- a/drivers/pci/host/pcie-iproc-platform.c +++ b/drivers/pci/host/pcie-iproc-platform.c @@ -1,14 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2015 Broadcom Corporation - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation version 2. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/kernel.h> @@ -92,6 +84,13 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev) pcie->need_ob_cfg = true; } + /* + * DT nodes are not used by all platforms that use the iProc PCIe + * core driver. For platforms that require explict inbound mapping + * configuration, "dma-ranges" would have been present in DT + */ + pcie->need_ib_cfg = of_property_read_bool(np, "dma-ranges"); + /* PHY use is optional */ pcie->phy = devm_phy_get(dev, "pcie-phy"); if (IS_ERR(pcie->phy)) { diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/host/pcie-iproc.c index 935909bbe5c4..cbb095481cdc 100644 --- a/drivers/pci/host/pcie-iproc.c +++ b/drivers/pci/host/pcie-iproc.c @@ -1,15 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2014 Hauke Mehrtens <hauke@hauke-m.de> * Copyright (C) 2015 Broadcom Corporation - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation version 2. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/kernel.h> @@ -1378,9 +1370,11 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res) } } - ret = iproc_pcie_map_dma_ranges(pcie); - if (ret && ret != -ENOENT) - goto err_power_off_phy; + if (pcie->need_ib_cfg) { + ret = iproc_pcie_map_dma_ranges(pcie); + if (ret && ret != -ENOENT) + goto err_power_off_phy; + } #ifdef CONFIG_ARM pcie->sysdata.private_data = pcie; diff --git a/drivers/pci/host/pcie-iproc.h b/drivers/pci/host/pcie-iproc.h index a6b55cec9a66..d55f56a186cd 100644 --- a/drivers/pci/host/pcie-iproc.h +++ b/drivers/pci/host/pcie-iproc.h @@ -1,14 +1,6 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 2014-2015 Broadcom Corporation - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation version 2. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #ifndef _PCIE_IPROC_H @@ -74,6 +66,7 @@ struct iproc_msi; * @ob: outbound mapping related parameters * @ob_map: outbound mapping related parameters specific to the controller * + * @need_ib_cfg: indicates SW needs to configure the inbound mapping window * @ib: inbound mapping related parameters * @ib_map: outbound mapping region related parameters * @@ -101,6 +94,7 @@ struct iproc_pcie { struct iproc_pcie_ob ob; const struct iproc_pcie_ob_map *ob_map; + bool need_ib_cfg; struct iproc_pcie_ib ib; const struct iproc_pcie_ib_map *ib_map; diff --git a/drivers/pci/host/pcie-mediatek.c b/drivers/pci/host/pcie-mediatek.c index db93efdf1d63..a8b20c5012a9 100644 --- a/drivers/pci/host/pcie-mediatek.c +++ b/drivers/pci/host/pcie-mediatek.c @@ -1,18 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * MediaTek PCIe host controller driver. * * Copyright (c) 2017 MediaTek Inc. * Author: Ryder Lee <ryder.lee@mediatek.com> * Honghui Zhang <honghui.zhang@mediatek.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/clk.h> diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/host/pcie-rcar.c index 52ab3cb0a0bf..b4c4aad2cf66 100644 --- a/drivers/pci/host/pcie-rcar.c +++ b/drivers/pci/host/pcie-rcar.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCIe driver for Renesas R-Car SoCs * Copyright (C) 2014 Renesas Electronics Europe Ltd @@ -8,10 +9,6 @@ * Copyright (C) 2009 - 2011 Paul Mundt * * Author: Phil Edworthy <phil.edworthy@renesas.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. */ #include <linux/clk.h> @@ -459,7 +456,7 @@ static int rcar_pcie_enable(struct rcar_pcie *pcie) rcar_pcie_setup(&bridge->windows, pcie); - pci_add_flags(PCI_REASSIGN_ALL_RSRC | PCI_REASSIGN_ALL_BUS); + pci_add_flags(PCI_REASSIGN_ALL_BUS); bridge->dev.parent = dev; bridge->sysdata = pcie; @@ -1123,7 +1120,9 @@ static int rcar_pcie_probe(struct platform_device *pdev) INIT_LIST_HEAD(&pcie->resources); - rcar_pcie_parse_request_of_pci_ranges(pcie); + err = rcar_pcie_parse_request_of_pci_ranges(pcie); + if (err) + goto err_free_bridge; err = rcar_pcie_get_resources(pcie); if (err < 0) { @@ -1178,6 +1177,7 @@ err_pm_disable: err_free_resource_list: pci_free_resource_list(&pcie->resources); +err_free_bridge: pci_free_host_bridge(bridge); return err; diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c index 9051c6c8fea4..f1e8f97ea1fb 100644 --- a/drivers/pci/host/pcie-rockchip.c +++ b/drivers/pci/host/pcie-rockchip.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Rockchip AXI PCIe host controller driver * @@ -8,11 +9,6 @@ * * Bits taken from Synopsys DesignWare Host controller driver and * ARM PCI Host generic driver. - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. */ #include <linux/bitrev.h> diff --git a/drivers/pci/host/pcie-xilinx-nwl.c b/drivers/pci/host/pcie-xilinx-nwl.c index 65dea98b2643..0acaf483d031 100644 --- a/drivers/pci/host/pcie-xilinx-nwl.c +++ b/drivers/pci/host/pcie-xilinx-nwl.c @@ -1,13 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * PCIe host controller driver for NWL PCIe Bridge * Based on pcie-xilinx.c, pci-tegra.c * * (C) Copyright 2014 - 2015, Xilinx, Inc. - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. */ #include <linux/delay.h> diff --git a/drivers/pci/host/pcie-xilinx.c b/drivers/pci/host/pcie-xilinx.c index 7b5325990f5e..0ad188effc09 100644 --- a/drivers/pci/host/pcie-xilinx.c +++ b/drivers/pci/host/pcie-xilinx.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * PCIe host controller driver for Xilinx AXI PCIe Bridge * @@ -7,11 +8,6 @@ * * Bits taken from Synopsys DesignWare Host controller driver and * ARM PCI Host generic driver. - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. */ #include <linux/interrupt.h> diff --git a/drivers/pci/host/vmd.c b/drivers/pci/host/vmd.c index 509893bc3e63..930a8fa08bd6 100644 --- a/drivers/pci/host/vmd.c +++ b/drivers/pci/host/vmd.c @@ -1,15 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Volume Management Device driver * Copyright (c) 2015, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #include <linux/device.h> diff --git a/drivers/pci/hotplug/Kconfig b/drivers/pci/hotplug/Kconfig index aadce45a9b4a..a8f21d051e0c 100644 --- a/drivers/pci/hotplug/Kconfig +++ b/drivers/pci/hotplug/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # PCI Hotplug support # diff --git a/drivers/pci/hotplug/acpi_pcihp.c b/drivers/pci/hotplug/acpi_pcihp.c index a5e66df4ad14..c9816166978e 100644 --- a/drivers/pci/hotplug/acpi_pcihp.c +++ b/drivers/pci/hotplug/acpi_pcihp.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Common ACPI functions for hot plug platforms * @@ -5,21 +6,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <kristen.c.accardi@intel.com> * */ diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h index f0ebc8b9a15a..e438a2d734f2 100644 --- a/drivers/pci/hotplug/acpiphp.h +++ b/drivers/pci/hotplug/acpiphp.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * ACPI PCI Hot Plug Controller Driver * @@ -12,21 +13,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <gregkh@us.ibm.com>, * <t-kochi@bq.jp.nec.com> * diff --git a/drivers/pci/hotplug/acpiphp_core.c b/drivers/pci/hotplug/acpiphp_core.c index 3c81fc8b0103..12b5655fd390 100644 --- a/drivers/pci/hotplug/acpiphp_core.c +++ b/drivers/pci/hotplug/acpiphp_core.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * ACPI PCI Hot Plug Controller Driver * @@ -12,21 +13,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <kristen.c.accardi@intel.com> * */ diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 5db6f1839dad..e2198a2feeca 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * ACPI PCI HotPlug glue functions to ACPI CA subsystem * @@ -11,21 +12,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <kristen.c.accardi@intel.com> * */ @@ -811,10 +797,8 @@ void acpiphp_enumerate_slots(struct pci_bus *bus) handle = adev->handle; bridge = kzalloc(sizeof(struct acpiphp_bridge), GFP_KERNEL); - if (!bridge) { - acpi_handle_err(handle, "No memory for bridge object\n"); + if (!bridge) return; - } INIT_LIST_HEAD(&bridge->slots); kref_init(&bridge->ref); diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c index 984c7e8cec5a..3903d90fe51c 100644 --- a/drivers/pci/hotplug/acpiphp_ibm.c +++ b/drivers/pci/hotplug/acpiphp_ibm.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * ACPI PCI Hot Plug IBM Extension * @@ -6,21 +7,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <vernux@us.ibm.com> * */ diff --git a/drivers/pci/hotplug/cpci_hotplug.h b/drivers/pci/hotplug/cpci_hotplug.h index 60e66e027ebc..4658557be01a 100644 --- a/drivers/pci/hotplug/cpci_hotplug.h +++ b/drivers/pci/hotplug/cpci_hotplug.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * CompactPCI Hot Plug Core Functions * @@ -7,21 +8,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <scottm@somanetworks.com> */ diff --git a/drivers/pci/hotplug/cpci_hotplug_core.c b/drivers/pci/hotplug/cpci_hotplug_core.c index 95f689f53920..07b533adc9df 100644 --- a/drivers/pci/hotplug/cpci_hotplug_core.c +++ b/drivers/pci/hotplug/cpci_hotplug_core.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * CompactPCI Hot Plug Driver * @@ -7,21 +8,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <scottm@somanetworks.com> */ diff --git a/drivers/pci/hotplug/cpci_hotplug_pci.c b/drivers/pci/hotplug/cpci_hotplug_pci.c index f616358fa938..389b8fb50cd9 100644 --- a/drivers/pci/hotplug/cpci_hotplug_pci.c +++ b/drivers/pci/hotplug/cpci_hotplug_pci.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * CompactPCI Hot Plug Driver PCI functions * @@ -5,21 +6,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <scottm@somanetworks.com> */ diff --git a/drivers/pci/hotplug/cpcihp_generic.c b/drivers/pci/hotplug/cpcihp_generic.c index bbf9cf8aeaad..17d71edf046f 100644 --- a/drivers/pci/hotplug/cpcihp_generic.c +++ b/drivers/pci/hotplug/cpcihp_generic.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * cpcihp_generic.c * @@ -7,26 +8,6 @@ * Copyright 2001 Intel San Luis Obispo * Copyright 2000,2001 MontaVista Software Inc. * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL - * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - * * This generic CompactPCI hotplug driver should allow using the PCI hotplug * mechanism on any CompactPCI board that exposes the #ENUM signal as a bit * in a system register that can be read through standard port I/O. diff --git a/drivers/pci/hotplug/cpcihp_zt5550.c b/drivers/pci/hotplug/cpcihp_zt5550.c index 2f8659a148f5..ae63e5a393c2 100644 --- a/drivers/pci/hotplug/cpcihp_zt5550.c +++ b/drivers/pci/hotplug/cpcihp_zt5550.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * cpcihp_zt5550.c * @@ -7,26 +8,6 @@ * Copyright 2001 Intel San Luis Obispo * Copyright 2000,2001 MontaVista Software Inc. * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL - * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <scottm@somanetworks.com> */ diff --git a/drivers/pci/hotplug/cpcihp_zt5550.h b/drivers/pci/hotplug/cpcihp_zt5550.h index 9a57fda5348c..5ea10df83dd9 100644 --- a/drivers/pci/hotplug/cpcihp_zt5550.h +++ b/drivers/pci/hotplug/cpcihp_zt5550.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * cpcihp_zt5550.h * @@ -7,26 +8,6 @@ * Copyright 2001 Intel San Luis Obispo * Copyright 2000,2001 MontaVista Software Inc. * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL - * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <scottm@somanetworks.com> */ diff --git a/drivers/pci/hotplug/cpqphp.h b/drivers/pci/hotplug/cpqphp.h index c2bbe6b65d06..db78b394a075 100644 --- a/drivers/pci/hotplug/cpqphp.h +++ b/drivers/pci/hotplug/cpqphp.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * Compaq Hot Plug Controller Driver * @@ -7,21 +8,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com> * */ diff --git a/drivers/pci/hotplug/cpqphp_core.c b/drivers/pci/hotplug/cpqphp_core.c index 70967ac75265..1797e36ec586 100644 --- a/drivers/pci/hotplug/cpqphp_core.c +++ b/drivers/pci/hotplug/cpqphp_core.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Compaq Hot Plug Controller Driver * @@ -7,21 +8,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com> * * Jan 12, 2003 - Added 66/100/133MHz PCI-X support, @@ -835,7 +821,7 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent) bus = pdev->subordinate; if (!bus) { - dev_notice(&pdev->dev, "the device is not a bridge, skipping\n"); + pci_notice(pdev, "the device is not a bridge, skipping\n"); rc = -ENODEV; goto err_disable_device; } @@ -883,7 +869,6 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent) ctrl = kzalloc(sizeof(struct controller), GFP_KERNEL); if (!ctrl) { - err("%s : out of memory\n", __func__); rc = -ENOMEM; goto err_disable_device; } diff --git a/drivers/pci/hotplug/cpqphp_ctrl.c b/drivers/pci/hotplug/cpqphp_ctrl.c index a93069e739cb..b1b6e45253b2 100644 --- a/drivers/pci/hotplug/cpqphp_ctrl.c +++ b/drivers/pci/hotplug/cpqphp_ctrl.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Compaq Hot Plug Controller Driver * @@ -7,21 +8,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com> * */ diff --git a/drivers/pci/hotplug/cpqphp_nvram.c b/drivers/pci/hotplug/cpqphp_nvram.c index daae8071a156..00cd2b43364f 100644 --- a/drivers/pci/hotplug/cpqphp_nvram.c +++ b/drivers/pci/hotplug/cpqphp_nvram.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Compaq Hot Plug Controller Driver * @@ -7,21 +8,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com> * */ diff --git a/drivers/pci/hotplug/cpqphp_nvram.h b/drivers/pci/hotplug/cpqphp_nvram.h index 34e4e54fcf15..918ff8dbfe62 100644 --- a/drivers/pci/hotplug/cpqphp_nvram.h +++ b/drivers/pci/hotplug/cpqphp_nvram.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * Compaq Hot Plug Controller Driver * @@ -6,21 +7,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com> * */ diff --git a/drivers/pci/hotplug/cpqphp_pci.c b/drivers/pci/hotplug/cpqphp_pci.c index e220d49307bd..1b2b3f3b648b 100644 --- a/drivers/pci/hotplug/cpqphp_pci.c +++ b/drivers/pci/hotplug/cpqphp_pci.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Compaq Hot Plug Controller Driver * @@ -7,21 +8,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com> * */ @@ -89,7 +75,9 @@ int cpqhp_configure_device(struct controller *ctrl, struct pci_func *func) pci_lock_rescan_remove(); if (func->pci_dev == NULL) - func->pci_dev = pci_get_bus_and_slot(func->bus, PCI_DEVFN(func->device, func->function)); + func->pci_dev = pci_get_domain_bus_and_slot(0, func->bus, + PCI_DEVFN(func->device, + func->function)); /* No pci device, we need to create it then */ if (func->pci_dev == NULL) { @@ -99,7 +87,9 @@ int cpqhp_configure_device(struct controller *ctrl, struct pci_func *func) if (num) pci_bus_add_devices(ctrl->pci_dev->bus); - func->pci_dev = pci_get_bus_and_slot(func->bus, PCI_DEVFN(func->device, func->function)); + func->pci_dev = pci_get_domain_bus_and_slot(0, func->bus, + PCI_DEVFN(func->device, + func->function)); if (func->pci_dev == NULL) { dbg("ERROR: pci_dev still null\n"); goto out; @@ -129,7 +119,10 @@ int cpqhp_unconfigure_device(struct pci_func *func) pci_lock_rescan_remove(); for (j = 0; j < 8 ; j++) { - struct pci_dev *temp = pci_get_bus_and_slot(func->bus, PCI_DEVFN(func->device, j)); + struct pci_dev *temp = pci_get_domain_bus_and_slot(0, + func->bus, + PCI_DEVFN(func->device, + j)); if (temp) { pci_dev_put(temp); pci_stop_and_remove_bus_device(temp); @@ -319,6 +312,7 @@ int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug) int cloop = 0; int stop_it; int index; + u16 devfn; /* Decide which slots are supported */ @@ -416,7 +410,9 @@ int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug) new_slot->switch_save = 0x10; /* In case of unsupported board */ new_slot->status = DevError; - new_slot->pci_dev = pci_get_bus_and_slot(new_slot->bus, (new_slot->device << 3) | new_slot->function); + devfn = (new_slot->device << 3) | new_slot->function; + new_slot->pci_dev = pci_get_domain_bus_and_slot(0, + new_slot->bus, devfn); for (cloop = 0; cloop < 0x20; cloop++) { rc = pci_bus_read_config_dword(ctrl->pci_bus, PCI_DEVFN(device, function), cloop << 2, (u32 *) &(new_slot->config_space[cloop])); diff --git a/drivers/pci/hotplug/cpqphp_sysfs.c b/drivers/pci/hotplug/cpqphp_sysfs.c index 775974deda74..fed1360ee9b1 100644 --- a/drivers/pci/hotplug/cpqphp_sysfs.c +++ b/drivers/pci/hotplug/cpqphp_sysfs.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Compaq Hot Plug Controller Driver * @@ -7,21 +8,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com> * */ diff --git a/drivers/pci/hotplug/ibmphp.h b/drivers/pci/hotplug/ibmphp.h index d3256838cb05..fddb78606c74 100644 --- a/drivers/pci/hotplug/ibmphp.h +++ b/drivers/pci/hotplug/ibmphp.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ #ifndef __IBMPHP_H #define __IBMPHP_H @@ -11,21 +12,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <gregkh@us.ibm.com> * */ diff --git a/drivers/pci/hotplug/ibmphp_core.c b/drivers/pci/hotplug/ibmphp_core.c index 73cf84645c82..b81ca3fa0e84 100644 --- a/drivers/pci/hotplug/ibmphp_core.c +++ b/drivers/pci/hotplug/ibmphp_core.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * IBM Hot Plug Controller Driver * @@ -8,21 +9,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <gregkh@us.ibm.com> * */ @@ -603,10 +589,8 @@ int ibmphp_update_slot_info(struct slot *slot_cur) u8 mode; info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL); - if (!info) { - err("out of system memory\n"); + if (!info) return -ENOMEM; - } info->power_status = SLOT_PWRGD(slot_cur->status); info->attention_status = SLOT_ATTN(slot_cur->status, @@ -707,7 +691,8 @@ static void ibm_unconfigure_device(struct pci_func *func) pci_lock_rescan_remove(); for (j = 0; j < 0x08; j++) { - temp = pci_get_bus_and_slot(func->busno, (func->device << 3) | j); + temp = pci_get_domain_bus_and_slot(0, func->busno, + (func->device << 3) | j); if (temp) { pci_stop_and_remove_bus_device(temp); pci_dev_put(temp); @@ -734,14 +719,12 @@ static u8 bus_structure_fixup(u8 busno) return 1; bus = kmalloc(sizeof(*bus), GFP_KERNEL); - if (!bus) { - err("%s - out of memory\n", __func__); + if (!bus) return 1; - } + dev = kmalloc(sizeof(*dev), GFP_KERNEL); if (!dev) { kfree(bus); - err("%s - out of memory\n", __func__); return 1; } @@ -780,7 +763,7 @@ static int ibm_configure_device(struct pci_func *func) if (!(bus_structure_fixup(func->busno))) flag = 1; if (func->dev == NULL) - func->dev = pci_get_bus_and_slot(func->busno, + func->dev = pci_get_domain_bus_and_slot(0, func->busno, PCI_DEVFN(func->device, func->function)); if (func->dev == NULL) { @@ -793,7 +776,7 @@ static int ibm_configure_device(struct pci_func *func) if (num) pci_bus_add_devices(bus); - func->dev = pci_get_bus_and_slot(func->busno, + func->dev = pci_get_domain_bus_and_slot(0, func->busno, PCI_DEVFN(func->device, func->function)); if (func->dev == NULL) { err("ERROR... : pci_dev still NULL\n"); @@ -1101,7 +1084,6 @@ static int enable_slot(struct hotplug_slot *hs) if (!slot_cur->func) { /* We cannot do update_slot_info here, since no memory for * kmalloc n.e.ways, and update_slot_info allocates some */ - err("out of system memory\n"); rc = -ENOMEM; goto error_power; } @@ -1208,7 +1190,6 @@ int ibmphp_do_disable_slot(struct slot *slot_cur) /* We need this for functions that were there on bootup */ slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL); if (!slot_cur->func) { - err("out of system memory\n"); rc = -ENOMEM; goto error; } @@ -1306,7 +1287,6 @@ static int __init ibmphp_init(void) ibmphp_pci_bus = kmalloc(sizeof(*ibmphp_pci_bus), GFP_KERNEL); if (!ibmphp_pci_bus) { - err("out of memory\n"); rc = -ENOMEM; goto exit; } diff --git a/drivers/pci/hotplug/ibmphp_ebda.c b/drivers/pci/hotplug/ibmphp_ebda.c index a6a4dac798e5..64549aa24c0f 100644 --- a/drivers/pci/hotplug/ibmphp_ebda.c +++ b/drivers/pci/hotplug/ibmphp_ebda.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * IBM Hot Plug Controller Driver * @@ -8,21 +9,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <gregkh@us.ibm.com> * */ diff --git a/drivers/pci/hotplug/ibmphp_hpc.c b/drivers/pci/hotplug/ibmphp_hpc.c index a6b458e4ab46..752c384cbd4c 100644 --- a/drivers/pci/hotplug/ibmphp_hpc.c +++ b/drivers/pci/hotplug/ibmphp_hpc.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * IBM Hot Plug Controller Driver * @@ -7,21 +8,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <gregkh@us.ibm.com> * <jshah@us.ibm.com> * diff --git a/drivers/pci/hotplug/ibmphp_pci.c b/drivers/pci/hotplug/ibmphp_pci.c index 25edd0b18b75..e22d023f91d1 100644 --- a/drivers/pci/hotplug/ibmphp_pci.c +++ b/drivers/pci/hotplug/ibmphp_pci.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * IBM Hot Plug Controller Driver * @@ -8,21 +9,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <gregkh@us.ibm.com> * */ @@ -167,10 +153,9 @@ int ibmphp_configure_card(struct pci_func *func, u8 slotno) goto error; } newfunc = kzalloc(sizeof(*newfunc), GFP_KERNEL); - if (!newfunc) { - err("out of system memory\n"); + if (!newfunc) return -ENOMEM; - } + newfunc->busno = cur_func->busno; newfunc->device = device; cur_func->next = newfunc; @@ -205,10 +190,9 @@ int ibmphp_configure_card(struct pci_func *func, u8 slotno) for (i = 0; i < 32; i++) { if (func->devices[i]) { newfunc = kzalloc(sizeof(*newfunc), GFP_KERNEL); - if (!newfunc) { - err("out of system memory\n"); + if (!newfunc) return -ENOMEM; - } + newfunc->busno = sec_number; newfunc->device = (u8) i; for (j = 0; j < 4; j++) @@ -233,10 +217,9 @@ int ibmphp_configure_card(struct pci_func *func, u8 slotno) } newfunc = kzalloc(sizeof(*newfunc), GFP_KERNEL); - if (!newfunc) { - err("out of system memory\n"); + if (!newfunc) return -ENOMEM; - } + newfunc->busno = cur_func->busno; newfunc->device = device; for (j = 0; j < 4; j++) @@ -279,10 +262,9 @@ int ibmphp_configure_card(struct pci_func *func, u8 slotno) if (func->devices[i]) { debug("inside for loop, device is %x\n", i); newfunc = kzalloc(sizeof(*newfunc), GFP_KERNEL); - if (!newfunc) { - err(" out of system memory\n"); + if (!newfunc) return -ENOMEM; - } + newfunc->busno = sec_number; newfunc->device = (u8) i; for (j = 0; j < 4; j++) @@ -405,10 +387,9 @@ static int configure_device(struct pci_func *func) io[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL); - if (!io[count]) { - err("out of system memory\n"); + if (!io[count]) return -ENOMEM; - } + io[count]->type = IO; io[count]->busno = func->busno; io[count]->devfunc = PCI_DEVFN(func->device, func->function); @@ -442,10 +423,9 @@ static int configure_device(struct pci_func *func) debug("len[count] in PFMEM %x, count %d\n", len[count], count); pfmem[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL); - if (!pfmem[count]) { - err("out of system memory\n"); + if (!pfmem[count]) return -ENOMEM; - } + pfmem[count]->type = PFMEM; pfmem[count]->busno = func->busno; pfmem[count]->devfunc = PCI_DEVFN(func->device, @@ -458,7 +438,6 @@ static int configure_device(struct pci_func *func) } else { mem_tmp = kzalloc(sizeof(*mem_tmp), GFP_KERNEL); if (!mem_tmp) { - err("out of system memory\n"); kfree(pfmem[count]); return -ENOMEM; } @@ -508,10 +487,9 @@ static int configure_device(struct pci_func *func) debug("len[count] in Mem %x, count %d\n", len[count], count); mem[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL); - if (!mem[count]) { - err("out of system memory\n"); + if (!mem[count]) return -ENOMEM; - } + mem[count]->type = MEM; mem[count]->busno = func->busno; mem[count]->devfunc = PCI_DEVFN(func->device, @@ -674,7 +652,6 @@ static int configure_bridge(struct pci_func **func_passed, u8 slotno) bus_io[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL); if (!bus_io[count]) { - err("out of system memory\n"); retval = -ENOMEM; goto error; } @@ -706,7 +683,6 @@ static int configure_bridge(struct pci_func **func_passed, u8 slotno) bus_pfmem[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL); if (!bus_pfmem[count]) { - err("out of system memory\n"); retval = -ENOMEM; goto error; } @@ -722,7 +698,6 @@ static int configure_bridge(struct pci_func **func_passed, u8 slotno) } else { mem_tmp = kzalloc(sizeof(*mem_tmp), GFP_KERNEL); if (!mem_tmp) { - err("out of system memory\n"); retval = -ENOMEM; goto error; } @@ -763,7 +738,6 @@ static int configure_bridge(struct pci_func **func_passed, u8 slotno) bus_mem[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL); if (!bus_mem[count]) { - err("out of system memory\n"); retval = -ENOMEM; goto error; } @@ -834,7 +808,6 @@ static int configure_bridge(struct pci_func **func_passed, u8 slotno) io = kzalloc(sizeof(*io), GFP_KERNEL); if (!io) { - err("out of system memory\n"); retval = -ENOMEM; goto error; } @@ -856,7 +829,6 @@ static int configure_bridge(struct pci_func **func_passed, u8 slotno) debug("it wants %x memory behind the bridge\n", amount_needed->mem); mem = kzalloc(sizeof(*mem), GFP_KERNEL); if (!mem) { - err("out of system memory\n"); retval = -ENOMEM; goto error; } @@ -878,7 +850,6 @@ static int configure_bridge(struct pci_func **func_passed, u8 slotno) debug("it wants %x pfmemory behind the bridge\n", amount_needed->pfmem); pfmem = kzalloc(sizeof(*pfmem), GFP_KERNEL); if (!pfmem) { - err("out of system memory\n"); retval = -ENOMEM; goto error; } @@ -893,7 +864,6 @@ static int configure_bridge(struct pci_func **func_passed, u8 slotno) } else { mem_tmp = kzalloc(sizeof(*mem_tmp), GFP_KERNEL); if (!mem_tmp) { - err("out of system memory\n"); retval = -ENOMEM; goto error; } @@ -924,7 +894,6 @@ static int configure_bridge(struct pci_func **func_passed, u8 slotno) if (!bus) { bus = kzalloc(sizeof(*bus), GFP_KERNEL); if (!bus) { - err("out of system memory\n"); retval = -ENOMEM; goto error; } @@ -1652,10 +1621,9 @@ static int add_new_bus(struct bus_node *bus, struct resource_node *io, struct re } if (io) { io_range = kzalloc(sizeof(*io_range), GFP_KERNEL); - if (!io_range) { - err("out of system memory\n"); + if (!io_range) return -ENOMEM; - } + io_range->start = io->start; io_range->end = io->end; io_range->rangeno = 1; @@ -1664,10 +1632,9 @@ static int add_new_bus(struct bus_node *bus, struct resource_node *io, struct re } if (mem) { mem_range = kzalloc(sizeof(*mem_range), GFP_KERNEL); - if (!mem_range) { - err("out of system memory\n"); + if (!mem_range) return -ENOMEM; - } + mem_range->start = mem->start; mem_range->end = mem->end; mem_range->rangeno = 1; @@ -1676,10 +1643,9 @@ static int add_new_bus(struct bus_node *bus, struct resource_node *io, struct re } if (pfmem) { pfmem_range = kzalloc(sizeof(*pfmem_range), GFP_KERNEL); - if (!pfmem_range) { - err("out of system memory\n"); + if (!pfmem_range) return -ENOMEM; - } + pfmem_range->start = pfmem->start; pfmem_range->end = pfmem->end; pfmem_range->rangeno = 1; diff --git a/drivers/pci/hotplug/ibmphp_res.c b/drivers/pci/hotplug/ibmphp_res.c index aee6e41001e1..5e8caf7a4452 100644 --- a/drivers/pci/hotplug/ibmphp_res.c +++ b/drivers/pci/hotplug/ibmphp_res.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * IBM Hot Plug Controller Driver * @@ -8,21 +9,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <gregkh@us.ibm.com> * */ @@ -56,10 +42,8 @@ static struct bus_node * __init alloc_error_bus(struct ebda_pci_rsrc *curr, u8 b } newbus = kzalloc(sizeof(struct bus_node), GFP_KERNEL); - if (!newbus) { - err("out of system memory\n"); + if (!newbus) return NULL; - } if (flag) newbus->busno = busno; @@ -79,10 +63,9 @@ static struct resource_node * __init alloc_resources(struct ebda_pci_rsrc *curr) } rs = kzalloc(sizeof(struct resource_node), GFP_KERNEL); - if (!rs) { - err("out of system memory\n"); + if (!rs) return NULL; - } + rs->busno = curr->bus_num; rs->devfunc = curr->dev_fun; rs->start = curr->start_addr; @@ -99,10 +82,9 @@ static int __init alloc_bus_range(struct bus_node **new_bus, struct range_node * if (first_bus) { newbus = kzalloc(sizeof(struct bus_node), GFP_KERNEL); - if (!newbus) { - err("out of system memory.\n"); + if (!newbus) return -ENOMEM; - } + newbus->busno = curr->bus_num; } else { newbus = *new_bus; @@ -123,7 +105,6 @@ static int __init alloc_bus_range(struct bus_node **new_bus, struct range_node * if (!newrange) { if (first_bus) kfree(newbus); - err("out of system memory\n"); return -ENOMEM; } newrange->start = curr->start_addr; @@ -1707,10 +1688,9 @@ static int __init once_over(void) bus_cur->firstPFMemFromMem = pfmem_cur; mem = kzalloc(sizeof(struct resource_node), GFP_KERNEL); - if (!mem) { - err("out of system memory\n"); + if (!mem) return -ENOMEM; - } + mem->type = MEM; mem->busno = pfmem_cur->busno; mem->devfunc = pfmem_cur->devfunc; @@ -1989,10 +1969,9 @@ static int __init update_bridge_ranges(struct bus_node **bus) if ((start_address) && (start_address <= end_address)) { range = kzalloc(sizeof(struct range_node), GFP_KERNEL); - if (!range) { - err("out of system memory\n"); + if (!range) return -ENOMEM; - } + range->start = start_address; range->end = end_address + 0xfff; @@ -2016,7 +1995,6 @@ static int __init update_bridge_ranges(struct bus_node **bus) io = kzalloc(sizeof(struct resource_node), GFP_KERNEL); if (!io) { kfree(range); - err("out of system memory\n"); return -ENOMEM; } io->type = IO; @@ -2038,10 +2016,9 @@ static int __init update_bridge_ranges(struct bus_node **bus) if ((start_address) && (start_address <= end_address)) { range = kzalloc(sizeof(struct range_node), GFP_KERNEL); - if (!range) { - err("out of system memory\n"); + if (!range) return -ENOMEM; - } + range->start = start_address; range->end = end_address + 0xfffff; @@ -2066,7 +2043,6 @@ static int __init update_bridge_ranges(struct bus_node **bus) mem = kzalloc(sizeof(struct resource_node), GFP_KERNEL); if (!mem) { kfree(range); - err("out of system memory\n"); return -ENOMEM; } mem->type = MEM; @@ -2092,10 +2068,9 @@ static int __init update_bridge_ranges(struct bus_node **bus) if ((start_address) && (start_address <= end_address)) { range = kzalloc(sizeof(struct range_node), GFP_KERNEL); - if (!range) { - err("out of system memory\n"); + if (!range) return -ENOMEM; - } + range->start = start_address; range->end = end_address + 0xfffff; @@ -2119,7 +2094,6 @@ static int __init update_bridge_ranges(struct bus_node **bus) pfmem = kzalloc(sizeof(struct resource_node), GFP_KERNEL); if (!pfmem) { kfree(range); - err("out of system memory\n"); return -ENOMEM; } pfmem->type = PFMEM; diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c index 7b0e97be9063..af92fed46ab7 100644 --- a/drivers/pci/hotplug/pci_hotplug_core.c +++ b/drivers/pci/hotplug/pci_hotplug_core.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * PCI HotPlug Controller Core * @@ -6,21 +7,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <kristen.c.accardi@intel.com> * * Authors: diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h index 06109d40c4ac..636ed8f4b869 100644 --- a/drivers/pci/hotplug/pciehp.h +++ b/drivers/pci/hotplug/pciehp.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * PCI Express Hot Plug Controller Driver * @@ -8,21 +9,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com> * */ diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c index 35d84845d5af..332b723ff9e6 100644 --- a/drivers/pci/hotplug/pciehp_core.c +++ b/drivers/pci/hotplug/pciehp_core.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * PCI Express Hot Plug Controller Driver * @@ -8,21 +9,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com> * * Authors: diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c index 83f3d4af3677..c684faa43387 100644 --- a/drivers/pci/hotplug/pciehp_ctrl.c +++ b/drivers/pci/hotplug/pciehp_ctrl.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * PCI Express Hot Plug Controller Driver * @@ -8,21 +9,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com> * */ diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c index 7bab0606f1a9..18a42f8f5dc5 100644 --- a/drivers/pci/hotplug/pciehp_hpc.c +++ b/drivers/pci/hotplug/pciehp_hpc.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * PCI Express PCI Hot Plug Driver * @@ -8,21 +9,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com>,<kristen.c.accardi@intel.com> * */ @@ -838,16 +824,22 @@ struct controller *pcie_init(struct pcie_device *dev) struct pci_dev *pdev = dev->port; ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL); - if (!ctrl) { - dev_err(&dev->device, "%s: Out of memory\n", __func__); + if (!ctrl) goto abort; - } + ctrl->pcie = dev; pcie_capability_read_dword(pdev, PCI_EXP_SLTCAP, &slot_cap); if (pdev->hotplug_user_indicators) slot_cap &= ~(PCI_EXP_SLTCAP_AIP | PCI_EXP_SLTCAP_PIP); + /* + * We assume no Thunderbolt controllers support Command Complete events, + * but some controllers falsely claim they do. + */ + if (pdev->is_thunderbolt) + slot_cap |= PCI_EXP_SLTCAP_NCCS; + ctrl->slot_cap = slot_cap; mutex_init(&ctrl->ctrl_lock); init_waitqueue_head(&ctrl->queue); diff --git a/drivers/pci/hotplug/pciehp_pci.c b/drivers/pci/hotplug/pciehp_pci.c index 2a1ca020cf5a..3f518dea856d 100644 --- a/drivers/pci/hotplug/pciehp_pci.c +++ b/drivers/pci/hotplug/pciehp_pci.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * PCI Express Hot Plug Controller Driver * @@ -8,21 +9,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com> * */ @@ -79,7 +65,6 @@ int pciehp_configure_device(struct slot *p_slot) int pciehp_unconfigure_device(struct slot *p_slot) { int rc = 0; - u8 bctl = 0; u8 presence = 0; struct pci_dev *dev, *temp; struct pci_bus *parent = p_slot->ctrl->pcie->port->subordinate; @@ -101,17 +86,6 @@ int pciehp_unconfigure_device(struct slot *p_slot) list_for_each_entry_safe_reverse(dev, temp, &parent->devices, bus_list) { pci_dev_get(dev); - if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE && presence) { - pci_read_config_byte(dev, PCI_BRIDGE_CONTROL, &bctl); - if (bctl & PCI_BRIDGE_CTL_VGA) { - ctrl_err(ctrl, - "Cannot remove display device %s\n", - pci_name(dev)); - pci_dev_put(dev); - rc = -EINVAL; - break; - } - } if (!presence) { pci_dev_set_disconnected(dev, NULL); if (pci_has_subordinate(dev)) diff --git a/drivers/pci/hotplug/pcihp_skeleton.c b/drivers/pci/hotplug/pcihp_skeleton.c index 172ed89200cd..c19694a04d2c 100644 --- a/drivers/pci/hotplug/pcihp_skeleton.c +++ b/drivers/pci/hotplug/pcihp_skeleton.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * PCI Hot Plug Controller Skeleton Driver - 0.3 * @@ -6,21 +7,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * This driver is to be used as a skeleton driver to show how to interface * with the pci hotplug core easily. * diff --git a/drivers/pci/hotplug/pnv_php.c b/drivers/pci/hotplug/pnv_php.c index 74f6a17e4614..23da3046f160 100644 --- a/drivers/pci/hotplug/pnv_php.c +++ b/drivers/pci/hotplug/pnv_php.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * PCI Hotplug Driver for PowerPC PowerNV platform. * * Copyright Gavin Shan, IBM Corporation 2016. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #include <linux/libfdt.h> @@ -266,22 +262,18 @@ static int pnv_php_add_devtree(struct pnv_php_slot *php_slot) fdt1 = kzalloc(0x10000, GFP_KERNEL); if (!fdt1) { ret = -ENOMEM; - dev_warn(&php_slot->pdev->dev, "Cannot alloc FDT blob\n"); goto out; } ret = pnv_pci_get_device_tree(php_slot->dn->phandle, fdt1, 0x10000); if (ret) { - dev_warn(&php_slot->pdev->dev, "Error %d getting FDT blob\n", - ret); + pci_warn(php_slot->pdev, "Error %d getting FDT blob\n", ret); goto free_fdt1; } fdt = kzalloc(fdt_totalsize(fdt1), GFP_KERNEL); if (!fdt) { ret = -ENOMEM; - dev_warn(&php_slot->pdev->dev, "Cannot %d bytes memory\n", - fdt_totalsize(fdt1)); goto free_fdt1; } @@ -290,7 +282,7 @@ static int pnv_php_add_devtree(struct pnv_php_slot *php_slot) dt = of_fdt_unflatten_tree(fdt, php_slot->dn, NULL); if (!dt) { ret = -EINVAL; - dev_warn(&php_slot->pdev->dev, "Cannot unflatten FDT\n"); + pci_warn(php_slot->pdev, "Cannot unflatten FDT\n"); goto free_fdt; } @@ -300,7 +292,7 @@ static int pnv_php_add_devtree(struct pnv_php_slot *php_slot) ret = pnv_php_populate_changeset(&php_slot->ocs, php_slot->dn); if (ret) { pnv_php_reverse_nodes(php_slot->dn); - dev_warn(&php_slot->pdev->dev, "Error %d populating changeset\n", + pci_warn(php_slot->pdev, "Error %d populating changeset\n", ret); goto free_dt; } @@ -308,8 +300,7 @@ static int pnv_php_add_devtree(struct pnv_php_slot *php_slot) php_slot->dn->child = NULL; ret = of_changeset_apply(&php_slot->ocs); if (ret) { - dev_warn(&php_slot->pdev->dev, "Error %d applying changeset\n", - ret); + pci_warn(php_slot->pdev, "Error %d applying changeset\n", ret); goto destroy_changeset; } @@ -345,14 +336,14 @@ int pnv_php_set_slot_power_state(struct hotplug_slot *slot, if (be64_to_cpu(msg.params[1]) != php_slot->dn->phandle || be64_to_cpu(msg.params[2]) != state || be64_to_cpu(msg.params[3]) != OPAL_SUCCESS) { - dev_warn(&php_slot->pdev->dev, "Wrong msg (%lld, %lld, %lld)\n", + pci_warn(php_slot->pdev, "Wrong msg (%lld, %lld, %lld)\n", be64_to_cpu(msg.params[1]), be64_to_cpu(msg.params[2]), be64_to_cpu(msg.params[3])); return -ENOMSG; } } else if (ret < 0) { - dev_warn(&php_slot->pdev->dev, "Error %d powering %s\n", + pci_warn(php_slot->pdev, "Error %d powering %s\n", ret, (state == OPAL_PCI_SLOT_POWER_ON) ? "on" : "off"); return ret; } @@ -379,7 +370,7 @@ static int pnv_php_get_power_state(struct hotplug_slot *slot, u8 *state) */ ret = pnv_pci_get_power_state(php_slot->id, &power_state); if (ret) { - dev_warn(&php_slot->pdev->dev, "Error %d getting power status\n", + pci_warn(php_slot->pdev, "Error %d getting power status\n", ret); } else { *state = power_state; @@ -405,8 +396,7 @@ static int pnv_php_get_adapter_state(struct hotplug_slot *slot, u8 *state) slot->info->adapter_status = presence; ret = 0; } else { - dev_warn(&php_slot->pdev->dev, "Error %d getting presence\n", - ret); + pci_warn(php_slot->pdev, "Error %d getting presence\n", ret); } return ret; @@ -629,8 +619,7 @@ static int pnv_php_register_slot(struct pnv_php_slot *php_slot) ret = pci_hp_register(&php_slot->slot, php_slot->bus, php_slot->slot_no, php_slot->name); if (ret) { - dev_warn(&php_slot->pdev->dev, "Error %d registering slot\n", - ret); + pci_warn(php_slot->pdev, "Error %d registering slot\n", ret); return ret; } @@ -683,7 +672,7 @@ static int pnv_php_enable_msix(struct pnv_php_slot *php_slot) /* Enable MSIx */ ret = pci_enable_msix_exact(pdev, &entry, 1); if (ret) { - dev_warn(&pdev->dev, "Error %d enabling MSIx\n", ret); + pci_warn(pdev, "Error %d enabling MSIx\n", ret); return ret; } @@ -727,7 +716,7 @@ static irqreturn_t pnv_php_interrupt(int irq, void *data) (sts & PCI_EXP_SLTSTA_PDC)) { ret = pnv_pci_get_presence_state(php_slot->id, &presence); if (ret) { - dev_warn(&pdev->dev, "PCI slot [%s] error %d getting presence (0x%04x), to retry the operation.\n", + pci_warn(pdev, "PCI slot [%s] error %d getting presence (0x%04x), to retry the operation.\n", php_slot->name, ret, sts); return IRQ_HANDLED; } @@ -757,12 +746,12 @@ static irqreturn_t pnv_php_interrupt(int irq, void *data) */ event = kzalloc(sizeof(*event), GFP_ATOMIC); if (!event) { - dev_warn(&pdev->dev, "PCI slot [%s] missed hotplug event 0x%04x\n", + pci_warn(pdev, "PCI slot [%s] missed hotplug event 0x%04x\n", php_slot->name, sts); return IRQ_HANDLED; } - dev_info(&pdev->dev, "PCI slot [%s] %s (IRQ: %d)\n", + pci_info(pdev, "PCI slot [%s] %s (IRQ: %d)\n", php_slot->name, added ? "added" : "removed", irq); INIT_WORK(&event->work, pnv_php_event_handler); event->added = added; @@ -782,7 +771,7 @@ static void pnv_php_init_irq(struct pnv_php_slot *php_slot, int irq) /* Allocate workqueue */ php_slot->wq = alloc_workqueue("pciehp-%s", 0, 0, php_slot->name); if (!php_slot->wq) { - dev_warn(&pdev->dev, "Cannot alloc workqueue\n"); + pci_warn(pdev, "Cannot alloc workqueue\n"); pnv_php_disable_irq(php_slot, true); return; } @@ -806,7 +795,7 @@ static void pnv_php_init_irq(struct pnv_php_slot *php_slot, int irq) php_slot->name, php_slot); if (ret) { pnv_php_disable_irq(php_slot, true); - dev_warn(&pdev->dev, "Error %d enabling IRQ %d\n", ret, irq); + pci_warn(pdev, "Error %d enabling IRQ %d\n", ret, irq); return; } @@ -842,7 +831,7 @@ static void pnv_php_enable_irq(struct pnv_php_slot *php_slot) ret = pci_enable_device(pdev); if (ret) { - dev_warn(&pdev->dev, "Error %d enabling device\n", ret); + pci_warn(pdev, "Error %d enabling device\n", ret); return; } diff --git a/drivers/pci/hotplug/rpadlpar.h b/drivers/pci/hotplug/rpadlpar.h index 81df93931ad0..1eeb55d33171 100644 --- a/drivers/pci/hotplug/rpadlpar.h +++ b/drivers/pci/hotplug/rpadlpar.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * Interface for Dynamic Logical Partitioning of I/O Slots on * RPA-compliant PPC64 platform. @@ -6,11 +7,6 @@ * October 2003 * * Copyright (C) 2003 IBM. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #ifndef _RPADLPAR_IO_H_ #define _RPADLPAR_IO_H_ diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c index fc01d7d807f3..e2356a9c7088 100644 --- a/drivers/pci/hotplug/rpadlpar_core.c +++ b/drivers/pci/hotplug/rpadlpar_core.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Interface for Dynamic Logical Partitioning of I/O Slots on * RPA-compliant PPC64 platform. @@ -8,11 +9,6 @@ * October 2003 * * Copyright (C) 2003 IBM. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #undef DEBUG diff --git a/drivers/pci/hotplug/rpadlpar_sysfs.c b/drivers/pci/hotplug/rpadlpar_sysfs.c index b806314349cf..cdbfa5df3a51 100644 --- a/drivers/pci/hotplug/rpadlpar_sysfs.c +++ b/drivers/pci/hotplug/rpadlpar_sysfs.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Interface for Dynamic Logical Partitioning of I/O Slots on * RPA-compliant PPC64 platform. @@ -6,11 +7,6 @@ * October 2003 * * Copyright (C) 2003 IBM. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/kobject.h> #include <linux/string.h> diff --git a/drivers/pci/hotplug/rpaphp.h b/drivers/pci/hotplug/rpaphp.h index bdb844b01a3d..c8311724bd76 100644 --- a/drivers/pci/hotplug/rpaphp.h +++ b/drivers/pci/hotplug/rpaphp.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * PCI Hot Plug Controller Driver for RPA-compliant PPC64 platform. * @@ -5,21 +6,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <lxie@us.ibm.com>, * */ diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c index 53902c7c38f2..fb5e0845429d 100644 --- a/drivers/pci/hotplug/rpaphp_core.c +++ b/drivers/pci/hotplug/rpaphp_core.c @@ -1,24 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * PCI Hot Plug Controller Driver for RPA-compliant PPC64 platform. * Copyright (C) 2003 Linda Xie <lxie@us.ibm.com> * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <lxie@us.ibm.com> * */ diff --git a/drivers/pci/hotplug/rpaphp_pci.c b/drivers/pci/hotplug/rpaphp_pci.c index 32aabc533be8..0aac33e15dab 100644 --- a/drivers/pci/hotplug/rpaphp_pci.c +++ b/drivers/pci/hotplug/rpaphp_pci.c @@ -1,24 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * PCI Hot Plug Controller Driver for RPA-compliant PPC64 platform. * Copyright (C) 2003 Linda Xie <lxie@us.ibm.com> * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <lxie@us.ibm.com> * */ diff --git a/drivers/pci/hotplug/rpaphp_slot.c b/drivers/pci/hotplug/rpaphp_slot.c index 489862360f2c..3840a2075e6a 100644 --- a/drivers/pci/hotplug/rpaphp_slot.c +++ b/drivers/pci/hotplug/rpaphp_slot.c @@ -1,24 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * RPA Virtual I/O device functions * Copyright (C) 2004 Linda Xie <lxie@us.ibm.com> * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <lxie@us.ibm.com> * */ diff --git a/drivers/pci/hotplug/s390_pci_hpc.c b/drivers/pci/hotplug/s390_pci_hpc.c index 530d0e49f2ed..ffdc2977395d 100644 --- a/drivers/pci/hotplug/s390_pci_hpc.c +++ b/drivers/pci/hotplug/s390_pci_hpc.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * PCI Hot Plug Controller Driver for System z * @@ -5,8 +6,6 @@ * * Author(s): * Jan Glauber <jang@linux.vnet.ibm.com> - * - * License: GPL */ #define KMSG_COMPONENT "zpci" diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c index 339bce0403dd..78b6bdbb3a39 100644 --- a/drivers/pci/hotplug/sgi_hotplug.c +++ b/drivers/pci/hotplug/sgi_hotplug.c @@ -1,8 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0 /* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * * Copyright (C) 2005-2006 Silicon Graphics, Inc. All rights reserved. * * This work was based on the 2.4/2.6 kernel development by Dick Reigner. @@ -245,18 +242,18 @@ static int sn_slot_enable(struct hotplug_slot *bss_hotplug_slot, if (rc == PCI_SLOT_ALREADY_UP) { - dev_dbg(&slot->pci_bus->self->dev, "is already active\n"); + pci_dbg(slot->pci_bus->self, "is already active\n"); return 1; /* return 1 to user */ } if (rc == PCI_L1_ERR) { - dev_dbg(&slot->pci_bus->self->dev, "L1 failure %d with message: %s", + pci_dbg(slot->pci_bus->self, "L1 failure %d with message: %s", resp.resp_sub_errno, resp.resp_l1_msg); return -EPERM; } if (rc) { - dev_dbg(&slot->pci_bus->self->dev, "insert failed with error %d sub-error %d\n", + pci_dbg(slot->pci_bus->self, "insert failed with error %d sub-error %d\n", rc, resp.resp_sub_errno); return -EIO; } @@ -281,23 +278,23 @@ static int sn_slot_disable(struct hotplug_slot *bss_hotplug_slot, if ((action == PCI_REQ_SLOT_ELIGIBLE) && (rc == PCI_SLOT_ALREADY_DOWN)) { - dev_dbg(&slot->pci_bus->self->dev, "Slot %s already inactive\n", slot->physical_path); + pci_dbg(slot->pci_bus->self, "Slot %s already inactive\n", slot->physical_path); return 1; /* return 1 to user */ } if ((action == PCI_REQ_SLOT_ELIGIBLE) && (rc == PCI_EMPTY_33MHZ)) { - dev_dbg(&slot->pci_bus->self->dev, "Cannot remove last 33MHz card\n"); + pci_dbg(slot->pci_bus->self, "Cannot remove last 33MHz card\n"); return -EPERM; } if ((action == PCI_REQ_SLOT_ELIGIBLE) && (rc == PCI_L1_ERR)) { - dev_dbg(&slot->pci_bus->self->dev, "L1 failure %d with message \n%s\n", + pci_dbg(slot->pci_bus->self, "L1 failure %d with message \n%s\n", resp.resp_sub_errno, resp.resp_l1_msg); return -EPERM; } if ((action == PCI_REQ_SLOT_ELIGIBLE) && rc) { - dev_dbg(&slot->pci_bus->self->dev, "remove failed with error %d sub-error %d\n", + pci_dbg(slot->pci_bus->self, "remove failed with error %d sub-error %d\n", rc, resp.resp_sub_errno); return -EIO; } @@ -308,12 +305,12 @@ static int sn_slot_disable(struct hotplug_slot *bss_hotplug_slot, if ((action == PCI_REQ_SLOT_DISABLE) && !rc) { pcibus_info = SN_PCIBUS_BUSSOFT_INFO(slot->pci_bus); pcibus_info->pbi_enabled_devices &= ~(1 << device_num); - dev_dbg(&slot->pci_bus->self->dev, "remove successful\n"); + pci_dbg(slot->pci_bus->self, "remove successful\n"); return 0; } if ((action == PCI_REQ_SLOT_DISABLE) && rc) { - dev_dbg(&slot->pci_bus->self->dev, "remove failed rc = %d\n", rc); + pci_dbg(slot->pci_bus->self, "remove failed rc = %d\n", rc); } return rc; @@ -366,7 +363,7 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot) num_funcs = pci_scan_slot(slot->pci_bus, PCI_DEVFN(slot->device_num + 1, 0)); if (!num_funcs) { - dev_dbg(&slot->pci_bus->self->dev, "no device in slot\n"); + pci_dbg(slot->pci_bus->self, "no device in slot\n"); mutex_unlock(&sn_hotplug_mutex); return -ENODEV; } @@ -412,7 +409,7 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot) phandle = acpi_device_handle(PCI_CONTROLLER(slot->pci_bus)->companion); if (acpi_bus_get_device(phandle, &pdevice)) { - dev_dbg(&slot->pci_bus->self->dev, "no parent device, assuming NULL\n"); + pci_dbg(slot->pci_bus->self, "no parent device, assuming NULL\n"); pdevice = NULL; } @@ -463,9 +460,9 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot) mutex_unlock(&sn_hotplug_mutex); if (rc == 0) - dev_dbg(&slot->pci_bus->self->dev, "insert operation successful\n"); + pci_dbg(slot->pci_bus->self, "insert operation successful\n"); else - dev_dbg(&slot->pci_bus->self->dev, "insert operation failed rc = %d\n", rc); + pci_dbg(slot->pci_bus->self, "insert operation failed rc = %d\n", rc); return rc; } @@ -643,16 +640,16 @@ static int sn_hotplug_slot_register(struct pci_bus *pci_bus) if (rc) goto register_err; } - dev_dbg(&pci_bus->self->dev, "Registered bus with hotplug\n"); + pci_dbg(pci_bus->self, "Registered bus with hotplug\n"); return rc; register_err: - dev_dbg(&pci_bus->self->dev, "bus failed to register with err = %d\n", + pci_dbg(pci_bus->self, "bus failed to register with err = %d\n", rc); alloc_err: if (rc == -ENOMEM) - dev_dbg(&pci_bus->self->dev, "Memory allocation error\n"); + pci_dbg(pci_bus->self, "Memory allocation error\n"); /* destroy THIS element */ if (bss_hotplug_slot) @@ -685,10 +682,10 @@ static int __init sn_pci_hotplug_init(void) rc = sn_pci_bus_valid(pci_bus); if (rc != 1) { - dev_dbg(&pci_bus->self->dev, "not a valid hotplug bus\n"); + pci_dbg(pci_bus->self, "not a valid hotplug bus\n"); continue; } - dev_dbg(&pci_bus->self->dev, "valid hotplug bus\n"); + pci_dbg(pci_bus->self, "valid hotplug bus\n"); rc = sn_hotplug_slot_register(pci_bus); if (!rc) { diff --git a/drivers/pci/hotplug/shpchp.h b/drivers/pci/hotplug/shpchp.h index 70c7ea6af034..c55730b61c9a 100644 --- a/drivers/pci/hotplug/shpchp.h +++ b/drivers/pci/hotplug/shpchp.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * Standard Hot Plug Controller Driver * @@ -8,21 +9,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com>,<kristen.c.accardi@intel.com> * */ @@ -62,15 +48,15 @@ do { \ #define ctrl_dbg(ctrl, format, arg...) \ do { \ if (shpchp_debug) \ - dev_printk(KERN_DEBUG, &ctrl->pci_dev->dev, \ + pci_printk(KERN_DEBUG, ctrl->pci_dev, \ format, ## arg); \ } while (0) #define ctrl_err(ctrl, format, arg...) \ - dev_err(&ctrl->pci_dev->dev, format, ## arg) + pci_err(ctrl->pci_dev, format, ## arg) #define ctrl_info(ctrl, format, arg...) \ - dev_info(&ctrl->pci_dev->dev, format, ## arg) + pci_info(ctrl->pci_dev, format, ## arg) #define ctrl_warn(ctrl, format, arg...) \ - dev_warn(&ctrl->pci_dev->dev, format, ## arg) + pci_warn(ctrl->pci_dev, format, ## arg) #define SLOT_NAME_SIZE 10 diff --git a/drivers/pci/hotplug/shpchp_core.c b/drivers/pci/hotplug/shpchp_core.c index 7bfb87bd2b7e..1f0f96908b5a 100644 --- a/drivers/pci/hotplug/shpchp_core.c +++ b/drivers/pci/hotplug/shpchp_core.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Standard Hot Plug Controller Driver * @@ -8,21 +9,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com> * */ @@ -305,10 +291,9 @@ static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent) return -ENODEV; ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL); - if (!ctrl) { - dev_err(&pdev->dev, "%s: Out of memory\n", __func__); + if (!ctrl) goto err_out_none; - } + INIT_LIST_HEAD(&ctrl->slot_list); rc = shpc_init(ctrl, pdev); diff --git a/drivers/pci/hotplug/shpchp_ctrl.c b/drivers/pci/hotplug/shpchp_ctrl.c index 10c7927599b3..bedda5bda910 100644 --- a/drivers/pci/hotplug/shpchp_ctrl.c +++ b/drivers/pci/hotplug/shpchp_ctrl.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Standard Hot Plug Controller Driver * @@ -8,21 +9,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com> * */ diff --git a/drivers/pci/hotplug/shpchp_hpc.c b/drivers/pci/hotplug/shpchp_hpc.c index 4810e9626d9f..db047284c291 100644 --- a/drivers/pci/hotplug/shpchp_hpc.c +++ b/drivers/pci/hotplug/shpchp_hpc.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Standard PCI Hot Plug Driver * @@ -8,21 +9,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com>,<kristen.c.accardi@intel.com> * */ diff --git a/drivers/pci/hotplug/shpchp_pci.c b/drivers/pci/hotplug/shpchp_pci.c index ea63db58b4b1..115701301487 100644 --- a/drivers/pci/hotplug/shpchp_pci.c +++ b/drivers/pci/hotplug/shpchp_pci.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Standard Hot Plug Controller Driver * @@ -8,21 +9,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com> * */ @@ -78,7 +64,6 @@ int shpchp_configure_device(struct slot *p_slot) int shpchp_unconfigure_device(struct slot *p_slot) { int rc = 0; - u8 bctl = 0; struct pci_bus *parent = p_slot->ctrl->pci_dev->subordinate; struct pci_dev *dev, *temp; struct controller *ctrl = p_slot->ctrl; @@ -93,17 +78,6 @@ int shpchp_unconfigure_device(struct slot *p_slot) continue; pci_dev_get(dev); - if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) { - pci_read_config_byte(dev, PCI_BRIDGE_CONTROL, &bctl); - if (bctl & PCI_BRIDGE_CTL_VGA) { - ctrl_err(ctrl, - "Cannot remove display device %s\n", - pci_name(dev)); - pci_dev_put(dev); - rc = -EINVAL; - break; - } - } pci_stop_and_remove_bus_device(dev); pci_dev_put(dev); } diff --git a/drivers/pci/hotplug/shpchp_sysfs.c b/drivers/pci/hotplug/shpchp_sysfs.c index 7efb56a28c9f..45658bb5c554 100644 --- a/drivers/pci/hotplug/shpchp_sysfs.c +++ b/drivers/pci/hotplug/shpchp_sysfs.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Compaq Hot Plug Controller Driver * @@ -7,21 +8,6 @@ * * All rights reserved. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Send feedback to <greg@kroah.com> * */ diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index 0b7b5da63d4e..677924ae0350 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * drivers/pci/iov.c * @@ -259,19 +260,19 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn) nres++; } if (nres != iov->nres) { - dev_err(&dev->dev, "not enough MMIO resources for SR-IOV\n"); + pci_err(dev, "not enough MMIO resources for SR-IOV\n"); return -ENOMEM; } bus = pci_iov_virtfn_bus(dev, nr_virtfn - 1); if (bus > dev->bus->busn_res.end) { - dev_err(&dev->dev, "can't enable %d VFs (bus %02x out of range of %pR)\n", + pci_err(dev, "can't enable %d VFs (bus %02x out of range of %pR)\n", nr_virtfn, bus, &dev->bus->busn_res); return -ENOMEM; } if (pci_enable_resources(dev, bars)) { - dev_err(&dev->dev, "SR-IOV: IOV BARS not allocated\n"); + pci_err(dev, "SR-IOV: IOV BARS not allocated\n"); return -ENOMEM; } @@ -298,7 +299,7 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn) rc = pcibios_sriov_enable(dev, initial); if (rc) { - dev_err(&dev->dev, "failure %d from pcibios_sriov_enable()\n", rc); + pci_err(dev, "failure %d from pcibios_sriov_enable()\n", rc); goto err_pcibios; } @@ -432,7 +433,7 @@ found: } iov->barsz[i] = resource_size(res); res->end = res->start + resource_size(res) * total - 1; - dev_info(&dev->dev, "VF(n) BAR%d space: %pR (contains BAR%d for %d VFs)\n", + pci_info(dev, "VF(n) BAR%d space: %pR (contains BAR%d for %d VFs)\n", i, res, i, total); i += bar64; nres++; diff --git a/drivers/pci/irq.c b/drivers/pci/irq.c index 10929cd43d5d..2a808e10645f 100644 --- a/drivers/pci/irq.c +++ b/drivers/pci/irq.c @@ -16,11 +16,10 @@ static void pci_note_irq_problem(struct pci_dev *pdev, const char *reason) { struct pci_dev *parent = to_pci_dev(pdev->dev.parent); - dev_err(&pdev->dev, - "Potentially misrouted IRQ (Bridge %s %04x:%04x)\n", + pci_err(pdev, "Potentially misrouted IRQ (Bridge %s %04x:%04x)\n", dev_name(&parent->dev), parent->vendor, parent->device); - dev_err(&pdev->dev, "%s\n", reason); - dev_err(&pdev->dev, "Please report to linux-kernel@vger.kernel.org\n"); + pci_err(pdev, "%s\n", reason); + pci_err(pdev, "Please report to linux-kernel@vger.kernel.org\n"); WARN_ON(1); } diff --git a/drivers/pci/mmap.c b/drivers/pci/mmap.c index 9a5e5a9055eb..814a3ce341fc 100644 --- a/drivers/pci/mmap.c +++ b/drivers/pci/mmap.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * mmap.c — generic PCI resource mmap helper * * Copyright © 2017 Amazon.com, Inc. or its affiliates. * * Author: David Woodhouse <dwmw2@infradead.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/kernel.h> diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index e06607167858..8b0729c94bb7 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * File: msi.c * Purpose: PCI Message Signaled Interrupt (MSI) @@ -578,7 +579,7 @@ static int msi_verify_entries(struct pci_dev *dev) for_each_pci_msi_entry(entry, dev) { if (!dev->no_64bit_msi || !entry->msg.address_hi) continue; - dev_err(&dev->dev, "Device has broken 64-bit MSI but arch" + pci_err(dev, "Device has broken 64-bit MSI but arch" " tried to assign one above 4G\n"); return -EIO; } @@ -962,7 +963,7 @@ static int __pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries, /* Check whether driver already requested for MSI irq */ if (dev->msi_enabled) { - dev_info(&dev->dev, "can't enable MSI-X (MSI IRQ already assigned)\n"); + pci_info(dev, "can't enable MSI-X (MSI IRQ already assigned)\n"); return -EINVAL; } return msix_capability_init(dev, entries, nvec, affd); @@ -1032,8 +1033,7 @@ static int __pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec, /* Check whether driver already requested MSI-X irqs */ if (dev->msix_enabled) { - dev_info(&dev->dev, - "can't enable MSI (MSI-X already enabled)\n"); + pci_info(dev, "can't enable MSI (MSI-X already enabled)\n"); return -EINVAL; } diff --git a/drivers/pci/of.c b/drivers/pci/of.c index e112da11630e..a28355c273ae 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -1,19 +1,17 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * PCI <-> OF mapping helpers * * Copyright 2011 IBM Corp. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ +#define pr_fmt(fmt) "PCI: OF: " fmt #include <linux/irqdomain.h> #include <linux/kernel.h> #include <linux/pci.h> #include <linux/of.h> #include <linux/of_irq.h> +#include <linux/of_address.h> #include <linux/of_pci.h> #include "pci.h" @@ -51,8 +49,9 @@ struct device_node * __weak pcibios_get_phb_of_node(struct pci_bus *bus) if (WARN_ON(bus->self || bus->parent)) return NULL; - /* Look for a node pointer in either the intermediary device we - * create above the root bus or it's own parent. Normally only + /* + * Look for a node pointer in either the intermediary device we + * create above the root bus or its own parent. Normally only * the later is populated. */ if (bus->bridge->of_node) @@ -88,3 +87,561 @@ struct irq_domain *pci_host_bridge_of_msi_domain(struct pci_bus *bus) return NULL; #endif } + +static inline int __of_pci_pci_compare(struct device_node *node, + unsigned int data) +{ + int devfn; + + devfn = of_pci_get_devfn(node); + if (devfn < 0) + return 0; + + return devfn == data; +} + +struct device_node *of_pci_find_child_device(struct device_node *parent, + unsigned int devfn) +{ + struct device_node *node, *node2; + + for_each_child_of_node(parent, node) { + if (__of_pci_pci_compare(node, devfn)) + return node; + /* + * Some OFs create a parent node "multifunc-device" as + * a fake root for all functions of a multi-function + * device we go down them as well. + */ + if (!strcmp(node->name, "multifunc-device")) { + for_each_child_of_node(node, node2) { + if (__of_pci_pci_compare(node2, devfn)) { + of_node_put(node); + return node2; + } + } + } + } + return NULL; +} +EXPORT_SYMBOL_GPL(of_pci_find_child_device); + +/** + * of_pci_get_devfn() - Get device and function numbers for a device node + * @np: device node + * + * Parses a standard 5-cell PCI resource and returns an 8-bit value that can + * be passed to the PCI_SLOT() and PCI_FUNC() macros to extract the device + * and function numbers respectively. On error a negative error code is + * returned. + */ +int of_pci_get_devfn(struct device_node *np) +{ + u32 reg[5]; + int error; + + error = of_property_read_u32_array(np, "reg", reg, ARRAY_SIZE(reg)); + if (error) + return error; + + return (reg[0] >> 8) & 0xff; +} +EXPORT_SYMBOL_GPL(of_pci_get_devfn); + +/** + * of_pci_parse_bus_range() - parse the bus-range property of a PCI device + * @node: device node + * @res: address to a struct resource to return the bus-range + * + * Returns 0 on success or a negative error-code on failure. + */ +int of_pci_parse_bus_range(struct device_node *node, struct resource *res) +{ + u32 bus_range[2]; + int error; + + error = of_property_read_u32_array(node, "bus-range", bus_range, + ARRAY_SIZE(bus_range)); + if (error) + return error; + + res->name = node->name; + res->start = bus_range[0]; + res->end = bus_range[1]; + res->flags = IORESOURCE_BUS; + + return 0; +} +EXPORT_SYMBOL_GPL(of_pci_parse_bus_range); + +/** + * This function will try to obtain the host bridge domain number by + * finding a property called "linux,pci-domain" of the given device node. + * + * @node: device tree node with the domain information + * + * Returns the associated domain number from DT in the range [0-0xffff], or + * a negative value if the required property is not found. + */ +int of_get_pci_domain_nr(struct device_node *node) +{ + u32 domain; + int error; + + error = of_property_read_u32(node, "linux,pci-domain", &domain); + if (error) + return error; + + return (u16)domain; +} +EXPORT_SYMBOL_GPL(of_get_pci_domain_nr); + +/** + * This function will try to find the limitation of link speed by finding + * a property called "max-link-speed" of the given device node. + * + * @node: device tree node with the max link speed information + * + * Returns the associated max link speed from DT, or a negative value if the + * required property is not found or is invalid. + */ +int of_pci_get_max_link_speed(struct device_node *node) +{ + u32 max_link_speed; + + if (of_property_read_u32(node, "max-link-speed", &max_link_speed) || + max_link_speed > 4) + return -EINVAL; + + return max_link_speed; +} +EXPORT_SYMBOL_GPL(of_pci_get_max_link_speed); + +/** + * of_pci_check_probe_only - Setup probe only mode if linux,pci-probe-only + * is present and valid + */ +void of_pci_check_probe_only(void) +{ + u32 val; + int ret; + + ret = of_property_read_u32(of_chosen, "linux,pci-probe-only", &val); + if (ret) { + if (ret == -ENODATA || ret == -EOVERFLOW) + pr_warn("linux,pci-probe-only without valid value, ignoring\n"); + return; + } + + if (val) + pci_add_flags(PCI_PROBE_ONLY); + else + pci_clear_flags(PCI_PROBE_ONLY); + + pr_info("PROBE_ONLY %sabled\n", val ? "en" : "dis"); +} +EXPORT_SYMBOL_GPL(of_pci_check_probe_only); + +#if defined(CONFIG_OF_ADDRESS) +/** + * of_pci_get_host_bridge_resources - Parse PCI host bridge resources from DT + * @dev: device node of the host bridge having the range property + * @busno: bus number associated with the bridge root bus + * @bus_max: maximum number of buses for this bridge + * @resources: list where the range of resources will be added after DT parsing + * @io_base: pointer to a variable that will contain on return the physical + * address for the start of the I/O range. Can be NULL if the caller doesn't + * expect I/O ranges to be present in the device tree. + * + * It is the caller's job to free the @resources list. + * + * This function will parse the "ranges" property of a PCI host bridge device + * node and setup the resource mapping based on its content. It is expected + * that the property conforms with the Power ePAPR document. + * + * It returns zero if the range parsing has been successful or a standard error + * value if it failed. + */ +int of_pci_get_host_bridge_resources(struct device_node *dev, + unsigned char busno, unsigned char bus_max, + struct list_head *resources, resource_size_t *io_base) +{ + struct resource_entry *window; + struct resource *res; + struct resource *bus_range; + struct of_pci_range range; + struct of_pci_range_parser parser; + char range_type[4]; + int err; + + if (io_base) + *io_base = (resource_size_t)OF_BAD_ADDR; + + bus_range = kzalloc(sizeof(*bus_range), GFP_KERNEL); + if (!bus_range) + return -ENOMEM; + + pr_info("host bridge %pOF ranges:\n", dev); + + err = of_pci_parse_bus_range(dev, bus_range); + if (err) { + bus_range->start = busno; + bus_range->end = bus_max; + bus_range->flags = IORESOURCE_BUS; + pr_info(" No bus range found for %pOF, using %pR\n", + dev, bus_range); + } else { + if (bus_range->end > bus_range->start + bus_max) + bus_range->end = bus_range->start + bus_max; + } + pci_add_resource(resources, bus_range); + + /* Check for ranges property */ + err = of_pci_range_parser_init(&parser, dev); + if (err) + goto parse_failed; + + pr_debug("Parsing ranges property...\n"); + for_each_of_pci_range(&parser, &range) { + /* Read next ranges element */ + if ((range.flags & IORESOURCE_TYPE_BITS) == IORESOURCE_IO) + snprintf(range_type, 4, " IO"); + else if ((range.flags & IORESOURCE_TYPE_BITS) == IORESOURCE_MEM) + snprintf(range_type, 4, "MEM"); + else + snprintf(range_type, 4, "err"); + pr_info(" %s %#010llx..%#010llx -> %#010llx\n", range_type, + range.cpu_addr, range.cpu_addr + range.size - 1, + range.pci_addr); + + /* + * If we failed translation or got a zero-sized region + * then skip this range + */ + if (range.cpu_addr == OF_BAD_ADDR || range.size == 0) + continue; + + res = kzalloc(sizeof(struct resource), GFP_KERNEL); + if (!res) { + err = -ENOMEM; + goto parse_failed; + } + + err = of_pci_range_to_resource(&range, dev, res); + if (err) { + kfree(res); + continue; + } + + if (resource_type(res) == IORESOURCE_IO) { + if (!io_base) { + pr_err("I/O range found for %pOF. Please provide an io_base pointer to save CPU base address\n", + dev); + err = -EINVAL; + goto conversion_failed; + } + if (*io_base != (resource_size_t)OF_BAD_ADDR) + pr_warn("More than one I/O resource converted for %pOF. CPU base address for old range lost!\n", + dev); + *io_base = range.cpu_addr; + } + + pci_add_resource_offset(resources, res, res->start - range.pci_addr); + } + + return 0; + +conversion_failed: + kfree(res); +parse_failed: + resource_list_for_each_entry(window, resources) + kfree(window->res); + pci_free_resource_list(resources); + return err; +} +EXPORT_SYMBOL_GPL(of_pci_get_host_bridge_resources); +#endif /* CONFIG_OF_ADDRESS */ + +/** + * of_pci_map_rid - Translate a requester ID through a downstream mapping. + * @np: root complex device node. + * @rid: PCI requester ID to map. + * @map_name: property name of the map to use. + * @map_mask_name: optional property name of the mask to use. + * @target: optional pointer to a target device node. + * @id_out: optional pointer to receive the translated ID. + * + * Given a PCI requester ID, look up the appropriate implementation-defined + * platform ID and/or the target device which receives transactions on that + * ID, as per the "iommu-map" and "msi-map" bindings. Either of @target or + * @id_out may be NULL if only the other is required. If @target points to + * a non-NULL device node pointer, only entries targeting that node will be + * matched; if it points to a NULL value, it will receive the device node of + * the first matching target phandle, with a reference held. + * + * Return: 0 on success or a standard error code on failure. + */ +int of_pci_map_rid(struct device_node *np, u32 rid, + const char *map_name, const char *map_mask_name, + struct device_node **target, u32 *id_out) +{ + u32 map_mask, masked_rid; + int map_len; + const __be32 *map = NULL; + + if (!np || !map_name || (!target && !id_out)) + return -EINVAL; + + map = of_get_property(np, map_name, &map_len); + if (!map) { + if (target) + return -ENODEV; + /* Otherwise, no map implies no translation */ + *id_out = rid; + return 0; + } + + if (!map_len || map_len % (4 * sizeof(*map))) { + pr_err("%pOF: Error: Bad %s length: %d\n", np, + map_name, map_len); + return -EINVAL; + } + + /* The default is to select all bits. */ + map_mask = 0xffffffff; + + /* + * Can be overridden by "{iommu,msi}-map-mask" property. + * If of_property_read_u32() fails, the default is used. + */ + if (map_mask_name) + of_property_read_u32(np, map_mask_name, &map_mask); + + masked_rid = map_mask & rid; + for ( ; map_len > 0; map_len -= 4 * sizeof(*map), map += 4) { + struct device_node *phandle_node; + u32 rid_base = be32_to_cpup(map + 0); + u32 phandle = be32_to_cpup(map + 1); + u32 out_base = be32_to_cpup(map + 2); + u32 rid_len = be32_to_cpup(map + 3); + + if (rid_base & ~map_mask) { + pr_err("%pOF: Invalid %s translation - %s-mask (0x%x) ignores rid-base (0x%x)\n", + np, map_name, map_name, + map_mask, rid_base); + return -EFAULT; + } + + if (masked_rid < rid_base || masked_rid >= rid_base + rid_len) + continue; + + phandle_node = of_find_node_by_phandle(phandle); + if (!phandle_node) + return -ENODEV; + + if (target) { + if (*target) + of_node_put(phandle_node); + else + *target = phandle_node; + + if (*target != phandle_node) + continue; + } + + if (id_out) + *id_out = masked_rid - rid_base + out_base; + + pr_debug("%pOF: %s, using mask %08x, rid-base: %08x, out-base: %08x, length: %08x, rid: %08x -> %08x\n", + np, map_name, map_mask, rid_base, out_base, + rid_len, rid, masked_rid - rid_base + out_base); + return 0; + } + + pr_err("%pOF: Invalid %s translation - no match for rid 0x%x on %pOF\n", + np, map_name, rid, target && *target ? *target : NULL); + return -EFAULT; +} + +#if IS_ENABLED(CONFIG_OF_IRQ) +/** + * of_irq_parse_pci - Resolve the interrupt for a PCI device + * @pdev: the device whose interrupt is to be resolved + * @out_irq: structure of_irq filled by this function + * + * This function resolves the PCI interrupt for a given PCI device. If a + * device-node exists for a given pci_dev, it will use normal OF tree + * walking. If not, it will implement standard swizzling and walk up the + * PCI tree until an device-node is found, at which point it will finish + * resolving using the OF tree walking. + */ +static int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq) +{ + struct device_node *dn, *ppnode; + struct pci_dev *ppdev; + __be32 laddr[3]; + u8 pin; + int rc; + + /* + * Check if we have a device node, if yes, fallback to standard + * device tree parsing + */ + dn = pci_device_to_OF_node(pdev); + if (dn) { + rc = of_irq_parse_one(dn, 0, out_irq); + if (!rc) + return rc; + } + + /* + * Ok, we don't, time to have fun. Let's start by building up an + * interrupt spec. we assume #interrupt-cells is 1, which is standard + * for PCI. If you do different, then don't use that routine. + */ + rc = pci_read_config_byte(pdev, PCI_INTERRUPT_PIN, &pin); + if (rc != 0) + goto err; + /* No pin, exit with no error message. */ + if (pin == 0) + return -ENODEV; + + /* Now we walk up the PCI tree */ + for (;;) { + /* Get the pci_dev of our parent */ + ppdev = pdev->bus->self; + + /* Ouch, it's a host bridge... */ + if (ppdev == NULL) { + ppnode = pci_bus_to_OF_node(pdev->bus); + + /* No node for host bridge ? give up */ + if (ppnode == NULL) { + rc = -EINVAL; + goto err; + } + } else { + /* We found a P2P bridge, check if it has a node */ + ppnode = pci_device_to_OF_node(ppdev); + } + + /* + * Ok, we have found a parent with a device-node, hand over to + * the OF parsing code. + * We build a unit address from the linux device to be used for + * resolution. Note that we use the linux bus number which may + * not match your firmware bus numbering. + * Fortunately, in most cases, interrupt-map-mask doesn't + * include the bus number as part of the matching. + * You should still be careful about that though if you intend + * to rely on this function (you ship a firmware that doesn't + * create device nodes for all PCI devices). + */ + if (ppnode) + break; + + /* + * We can only get here if we hit a P2P bridge with no node; + * let's do standard swizzling and try again + */ + pin = pci_swizzle_interrupt_pin(pdev, pin); + pdev = ppdev; + } + + out_irq->np = ppnode; + out_irq->args_count = 1; + out_irq->args[0] = pin; + laddr[0] = cpu_to_be32((pdev->bus->number << 16) | (pdev->devfn << 8)); + laddr[1] = laddr[2] = cpu_to_be32(0); + rc = of_irq_parse_raw(laddr, out_irq); + if (rc) + goto err; + return 0; +err: + if (rc == -ENOENT) { + dev_warn(&pdev->dev, + "%s: no interrupt-map found, INTx interrupts not available\n", + __func__); + pr_warn_once("%s: possibly some PCI slots don't have level triggered interrupts capability\n", + __func__); + } else { + dev_err(&pdev->dev, "%s: failed with rc=%d\n", __func__, rc); + } + return rc; +} + +/** + * of_irq_parse_and_map_pci() - Decode a PCI IRQ from the device tree and map to a VIRQ + * @dev: The PCI device needing an IRQ + * @slot: PCI slot number; passed when used as map_irq callback. Unused + * @pin: PCI IRQ pin number; passed when used as map_irq callback. Unused + * + * @slot and @pin are unused, but included in the function so that this + * function can be used directly as the map_irq callback to + * pci_assign_irq() and struct pci_host_bridge.map_irq pointer + */ +int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin) +{ + struct of_phandle_args oirq; + int ret; + + ret = of_irq_parse_pci(dev, &oirq); + if (ret) + return 0; /* Proper return code 0 == NO_IRQ */ + + return irq_create_of_mapping(&oirq); +} +EXPORT_SYMBOL_GPL(of_irq_parse_and_map_pci); +#endif /* CONFIG_OF_IRQ */ + +int pci_parse_request_of_pci_ranges(struct device *dev, + struct list_head *resources, + struct resource **bus_range) +{ + int err, res_valid = 0; + struct device_node *np = dev->of_node; + resource_size_t iobase; + struct resource_entry *win, *tmp; + + INIT_LIST_HEAD(resources); + err = of_pci_get_host_bridge_resources(np, 0, 0xff, resources, &iobase); + if (err) + return err; + + err = devm_request_pci_bus_resources(dev, resources); + if (err) + goto out_release_res; + + resource_list_for_each_entry_safe(win, tmp, resources) { + struct resource *res = win->res; + + switch (resource_type(res)) { + case IORESOURCE_IO: + err = pci_remap_iospace(res, iobase); + if (err) { + dev_warn(dev, "error %d: failed to map resource %pR\n", + err, res); + resource_list_destroy_entry(win); + } + break; + case IORESOURCE_MEM: + res_valid |= !(res->flags & IORESOURCE_PREFETCH); + break; + case IORESOURCE_BUS: + if (bus_range) + *bus_range = res; + break; + } + } + + if (res_valid) + return 0; + + dev_err(dev, "non-prefetchable memory resource required\n"); + err = -EINVAL; + + out_release_res: + pci_free_resource_list(resources); + return err; +} + diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index 4708eb9df71b..78157688dcc9 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * File: pci-acpi.c * Purpose: Provide PCI support in ACPI @@ -542,7 +543,7 @@ static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state) } if (!error) - dev_dbg(&dev->dev, "power state changed by ACPI to %s\n", + pci_dbg(dev, "power state changed by ACPI to %s\n", acpi_power_state_string(state_conv[state])); return error; diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 5958c8dda4e3..3bed6beda051 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -1,11 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * drivers/pci/pci-driver.c * * (C) Copyright 2002-2004, 2007 Greg Kroah-Hartman <greg@kroah.com> * (C) Copyright 2007 Novell Inc. - * - * Released under the GPL v2 only. - * */ #include <linux/pci.h> diff --git a/drivers/pci/pci-mid.c b/drivers/pci/pci-mid.c index a4ac940c7696..314e135014dc 100644 --- a/drivers/pci/pci-mid.c +++ b/drivers/pci/pci-mid.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Intel MID platform PM support * * Copyright (C) 2016, Intel Corporation * * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. */ #include <linux/init.h> diff --git a/drivers/pci/pci-stub.c b/drivers/pci/pci-stub.c index 886fb3570278..10d54f939048 100644 --- a/drivers/pci/pci-stub.c +++ b/drivers/pci/pci-stub.c @@ -1,11 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* pci-stub - simple stub driver to reserve a pci device * * Copyright (C) 2008 Red Hat, Inc. * Author: * Chris Wright * - * This work is licensed under the terms of the GNU GPL, version 2. - * * Usage is simple, allocate a new id to the stub driver and bind the * device to it. For example: * @@ -28,7 +27,7 @@ MODULE_PARM_DESC(ids, "Initial PCI IDs to add to the stub driver, format is " static int pci_stub_probe(struct pci_dev *dev, const struct pci_device_id *id) { - dev_info(&dev->dev, "claimed by stub\n"); + pci_info(dev, "claimed by stub\n"); return 0; } diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index 06c7f0b85cd2..eb6bee8724cc 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -278,6 +278,16 @@ static ssize_t subordinate_bus_number_show(struct device *dev, } static DEVICE_ATTR_RO(subordinate_bus_number); +static ssize_t ari_enabled_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct pci_dev *pci_dev = to_pci_dev(dev); + + return sprintf(buf, "%u\n", pci_ari_enabled(pci_dev->bus)); +} +static DEVICE_ATTR_RO(ari_enabled); + static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -348,7 +358,7 @@ static ssize_t numa_node_store(struct device *dev, return -EINVAL; add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK); - dev_alert(&pdev->dev, FW_BUG "Overriding NUMA node to %d. Contact your vendor for updates.", + pci_alert(pdev, FW_BUG "Overriding NUMA node to %d. Contact your vendor for updates.", node); dev->numa_node = node; @@ -411,7 +421,7 @@ static ssize_t msi_bus_store(struct device *dev, struct device_attribute *attr, */ if (!subordinate) { pdev->no_msi = !val; - dev_info(&pdev->dev, "MSI/MSI-X %s for future drivers\n", + pci_info(pdev, "MSI/MSI-X %s for future drivers\n", val ? "allowed" : "disallowed"); return count; } @@ -613,7 +623,7 @@ static ssize_t sriov_numvfs_store(struct device *dev, /* is PF driver loaded w/callback */ if (!pdev->driver || !pdev->driver->sriov_configure) { - dev_info(&pdev->dev, "Driver doesn't support SRIOV configuration via sysfs\n"); + pci_info(pdev, "Driver doesn't support SRIOV configuration via sysfs\n"); ret = -ENOENT; goto exit; } @@ -626,7 +636,7 @@ static ssize_t sriov_numvfs_store(struct device *dev, /* enable VFs */ if (pdev->sriov->num_VFs) { - dev_warn(&pdev->dev, "%d VFs already enabled. Disable before enabling %d VFs\n", + pci_warn(pdev, "%d VFs already enabled. Disable before enabling %d VFs\n", pdev->sriov->num_VFs, num_vfs); ret = -EBUSY; goto exit; @@ -637,7 +647,7 @@ static ssize_t sriov_numvfs_store(struct device *dev, goto exit; if (ret != num_vfs) - dev_warn(&pdev->dev, "%d VFs requested; only %d enabled\n", + pci_warn(pdev, "%d VFs requested; only %d enabled\n", num_vfs, ret); exit: @@ -786,6 +796,7 @@ static struct attribute *pci_dev_attrs[] = { &dev_attr_devspec.attr, #endif &dev_attr_driver_override.attr, + &dev_attr_ari_enabled.attr, NULL, }; @@ -1216,14 +1227,9 @@ static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr, if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(res->start)) return -EINVAL; - if (!pci_mmap_fits(pdev, bar, vma, PCI_MMAP_SYSFS)) { - WARN(1, "process \"%s\" tried to map 0x%08lx bytes at page 0x%08lx on %s BAR %d (start 0x%16Lx, size 0x%16Lx)\n", - current->comm, vma->vm_end-vma->vm_start, vma->vm_pgoff, - pci_name(pdev), bar, - (u64)pci_resource_start(pdev, bar), - (u64)pci_resource_len(pdev, bar)); + if (!pci_mmap_fits(pdev, bar, vma, PCI_MMAP_SYSFS)) return -EINVAL; - } + mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io; return pci_mmap_resource_range(pdev, bar, vma, mmap_type, write_combine); diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 764ca7b8840d..f6a4dd10d9b0 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCI Bus Services, see include/linux/pci.h for further explanation. * @@ -156,7 +157,7 @@ void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar) * Make sure the BAR is actually a memory resource, not an IO resource */ if (res->flags & IORESOURCE_UNSET || !(res->flags & IORESOURCE_MEM)) { - dev_warn(&pdev->dev, "can't ioremap BAR %d: %pR\n", bar, res); + pci_warn(pdev, "can't ioremap BAR %d: %pR\n", bar, res); return NULL; } return ioremap_nocache(res->start, resource_size(res)); @@ -648,7 +649,7 @@ static int pci_raw_set_power_state(struct pci_dev *dev, pci_power_t state) */ if (state != PCI_D0 && dev->current_state <= PCI_D3cold && dev->current_state > state) { - dev_err(&dev->dev, "invalid power transition (from state %d to %d)\n", + pci_err(dev, "invalid power transition (from state %d to %d)\n", dev->current_state, state); return -EINVAL; } @@ -696,7 +697,7 @@ static int pci_raw_set_power_state(struct pci_dev *dev, pci_power_t state) pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr); dev->current_state = (pmcsr & PCI_PM_CTRL_STATE_MASK); if (dev->current_state != state && printk_ratelimit()) - dev_info(&dev->dev, "Refused to change power state, currently in D%d\n", + pci_info(dev, "Refused to change power state, currently in D%d\n", dev->current_state); /* @@ -970,7 +971,7 @@ pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state) case PM_EVENT_HIBERNATE: return PCI_D3hot; default: - dev_info(&dev->dev, "unrecognized suspend event %d\n", + pci_info(dev, "unrecognized suspend event %d\n", state.event); BUG(); } @@ -1013,7 +1014,7 @@ static int pci_save_pcie_state(struct pci_dev *dev) save_state = pci_find_saved_cap(dev, PCI_CAP_ID_EXP); if (!save_state) { - dev_err(&dev->dev, "buffer not found in %s\n", __func__); + pci_err(dev, "buffer not found in %s\n", __func__); return -ENOMEM; } @@ -1061,7 +1062,7 @@ static int pci_save_pcix_state(struct pci_dev *dev) save_state = pci_find_saved_cap(dev, PCI_CAP_ID_PCIX); if (!save_state) { - dev_err(&dev->dev, "buffer not found in %s\n", __func__); + pci_err(dev, "buffer not found in %s\n", __func__); return -ENOMEM; } @@ -1121,7 +1122,7 @@ static void pci_restore_config_dword(struct pci_dev *pdev, int offset, return; for (;;) { - dev_dbg(&pdev->dev, "restoring config space at offset %#x (was %#x, writing %#x)\n", + pci_dbg(pdev, "restoring config space at offset %#x (was %#x, writing %#x)\n", offset, val, saved_val); pci_write_config_dword(pdev, offset, saved_val); if (retry-- <= 0) @@ -1358,7 +1359,7 @@ static void pci_enable_bridge(struct pci_dev *dev) retval = pci_enable_device(dev); if (retval) - dev_err(&dev->dev, "Error enabling bridge (%d), continuing\n", + pci_err(dev, "Error enabling bridge (%d), continuing\n", retval); pci_set_master(dev); } @@ -1867,7 +1868,7 @@ void pci_pme_active(struct pci_dev *dev, bool enable) pme_dev = kmalloc(sizeof(struct pci_pme_device), GFP_KERNEL); if (!pme_dev) { - dev_warn(&dev->dev, "can't enable PME#\n"); + pci_warn(dev, "can't enable PME#\n"); return; } pme_dev->dev = dev; @@ -1891,7 +1892,7 @@ void pci_pme_active(struct pci_dev *dev, bool enable) } } - dev_dbg(&dev->dev, "PME# %s\n", enable ? "enabled" : "disabled"); + pci_dbg(dev, "PME# %s\n", enable ? "enabled" : "disabled"); } EXPORT_SYMBOL(pci_pme_active); @@ -2428,7 +2429,7 @@ void pci_pm_init(struct pci_dev *dev) pci_read_config_word(dev, pm + PCI_PM_PMC, &pmc); if ((pmc & PCI_PM_CAP_VER_MASK) > 3) { - dev_err(&dev->dev, "unsupported PM cap regs version (%u)\n", + pci_err(dev, "unsupported PM cap regs version (%u)\n", pmc & PCI_PM_CAP_VER_MASK); return; } @@ -2448,15 +2449,14 @@ void pci_pm_init(struct pci_dev *dev) dev->d2_support = true; if (dev->d1_support || dev->d2_support) - dev_printk(KERN_DEBUG, &dev->dev, "supports%s%s\n", + pci_printk(KERN_DEBUG, dev, "supports%s%s\n", dev->d1_support ? " D1" : "", dev->d2_support ? " D2" : ""); } pmc &= PCI_PM_CAP_PME_MASK; if (pmc) { - dev_printk(KERN_DEBUG, &dev->dev, - "PME# supported from%s%s%s%s%s\n", + pci_printk(KERN_DEBUG, dev, "PME# supported from%s%s%s%s%s\n", (pmc & PCI_PM_CAP_PME_D0) ? " D0" : "", (pmc & PCI_PM_CAP_PME_D1) ? " D1" : "", (pmc & PCI_PM_CAP_PME_D2) ? " D2" : "", @@ -2548,13 +2548,13 @@ static int pci_ea_read(struct pci_dev *dev, int offset) res = pci_ea_get_resource(dev, bei, prop); if (!res) { - dev_err(&dev->dev, "Unsupported EA entry BEI: %u\n", bei); + pci_err(dev, "Unsupported EA entry BEI: %u\n", bei); goto out; } flags = pci_ea_flags(dev, prop); if (!flags) { - dev_err(&dev->dev, "Unsupported EA properties: %#x\n", prop); + pci_err(dev, "Unsupported EA properties: %#x\n", prop); goto out; } @@ -2604,13 +2604,12 @@ static int pci_ea_read(struct pci_dev *dev, int offset) } if (end < start) { - dev_err(&dev->dev, "EA Entry crosses address boundary\n"); + pci_err(dev, "EA Entry crosses address boundary\n"); goto out; } if (ent_size != ent_offset - offset) { - dev_err(&dev->dev, - "EA Entry Size (%d) does not match length read (%d)\n", + pci_err(dev, "EA Entry Size (%d) does not match length read (%d)\n", ent_size, ent_offset - offset); goto out; } @@ -2621,16 +2620,16 @@ static int pci_ea_read(struct pci_dev *dev, int offset) res->flags = flags; if (bei <= PCI_EA_BEI_BAR5) - dev_printk(KERN_DEBUG, &dev->dev, "BAR %d: %pR (from Enhanced Allocation, properties %#02x)\n", + pci_printk(KERN_DEBUG, dev, "BAR %d: %pR (from Enhanced Allocation, properties %#02x)\n", bei, res, prop); else if (bei == PCI_EA_BEI_ROM) - dev_printk(KERN_DEBUG, &dev->dev, "ROM: %pR (from Enhanced Allocation, properties %#02x)\n", + pci_printk(KERN_DEBUG, dev, "ROM: %pR (from Enhanced Allocation, properties %#02x)\n", res, prop); else if (bei >= PCI_EA_BEI_VF_BAR0 && bei <= PCI_EA_BEI_VF_BAR5) - dev_printk(KERN_DEBUG, &dev->dev, "VF BAR %d: %pR (from Enhanced Allocation, properties %#02x)\n", + pci_printk(KERN_DEBUG, dev, "VF BAR %d: %pR (from Enhanced Allocation, properties %#02x)\n", bei - PCI_EA_BEI_VF_BAR0, res, prop); else - dev_printk(KERN_DEBUG, &dev->dev, "BEI %d res: %pR (from Enhanced Allocation, properties %#02x)\n", + pci_printk(KERN_DEBUG, dev, "BEI %d res: %pR (from Enhanced Allocation, properties %#02x)\n", bei, res, prop); out: @@ -2727,13 +2726,11 @@ void pci_allocate_cap_save_buffers(struct pci_dev *dev) error = pci_add_cap_save_buffer(dev, PCI_CAP_ID_EXP, PCI_EXP_SAVE_REGS * sizeof(u16)); if (error) - dev_err(&dev->dev, - "unable to preallocate PCI Express save buffer\n"); + pci_err(dev, "unable to preallocate PCI Express save buffer\n"); error = pci_add_cap_save_buffer(dev, PCI_CAP_ID_PCIX, sizeof(u16)); if (error) - dev_err(&dev->dev, - "unable to preallocate PCI-X save buffer\n"); + pci_err(dev, "unable to preallocate PCI-X save buffer\n"); pci_allocate_vc_save_buffers(dev); } @@ -3070,6 +3067,81 @@ int pci_rebar_set_size(struct pci_dev *pdev, int bar, int size) } /** + * pci_enable_atomic_ops_to_root - enable AtomicOp requests to root port + * @dev: the PCI device + * @cap_mask: mask of desired AtomicOp sizes, including one or more of: + * PCI_EXP_DEVCAP2_ATOMIC_COMP32 + * PCI_EXP_DEVCAP2_ATOMIC_COMP64 + * PCI_EXP_DEVCAP2_ATOMIC_COMP128 + * + * Return 0 if all upstream bridges support AtomicOp routing, egress + * blocking is disabled on all upstream ports, and the root port supports + * the requested completion capabilities (32-bit, 64-bit and/or 128-bit + * AtomicOp completion), or negative otherwise. + */ +int pci_enable_atomic_ops_to_root(struct pci_dev *dev, u32 cap_mask) +{ + struct pci_bus *bus = dev->bus; + struct pci_dev *bridge; + u32 cap, ctl2; + + if (!pci_is_pcie(dev)) + return -EINVAL; + + /* + * Per PCIe r4.0, sec 6.15, endpoints and root ports may be + * AtomicOp requesters. For now, we only support endpoints as + * requesters and root ports as completers. No endpoints as + * completers, and no peer-to-peer. + */ + + switch (pci_pcie_type(dev)) { + case PCI_EXP_TYPE_ENDPOINT: + case PCI_EXP_TYPE_LEG_END: + case PCI_EXP_TYPE_RC_END: + break; + default: + return -EINVAL; + } + + while (bus->parent) { + bridge = bus->self; + + pcie_capability_read_dword(bridge, PCI_EXP_DEVCAP2, &cap); + + switch (pci_pcie_type(bridge)) { + /* Ensure switch ports support AtomicOp routing */ + case PCI_EXP_TYPE_UPSTREAM: + case PCI_EXP_TYPE_DOWNSTREAM: + if (!(cap & PCI_EXP_DEVCAP2_ATOMIC_ROUTE)) + return -EINVAL; + break; + + /* Ensure root port supports all the sizes we care about */ + case PCI_EXP_TYPE_ROOT_PORT: + if ((cap & cap_mask) != cap_mask) + return -EINVAL; + break; + } + + /* Ensure upstream ports don't block AtomicOps on egress */ + if (!bridge->has_secondary_link) { + pcie_capability_read_dword(bridge, PCI_EXP_DEVCTL2, + &ctl2); + if (ctl2 & PCI_EXP_DEVCTL2_ATOMIC_EGRESS_BLOCK) + return -EINVAL; + } + + bus = bus->parent; + } + + pcie_capability_set_word(dev, PCI_EXP_DEVCTL2, + PCI_EXP_DEVCTL2_ATOMIC_REQ); + return 0; +} +EXPORT_SYMBOL(pci_enable_atomic_ops_to_root); + +/** * pci_swizzle_interrupt_pin - swizzle INTx for device behind bridge * @dev: the PCI device * @pin: the INTx pin (1=INTA, 2=INTB, 3=INTC, 4=INTD) @@ -3202,7 +3274,7 @@ static int __pci_request_region(struct pci_dev *pdev, int bar, return 0; err_out: - dev_warn(&pdev->dev, "BAR %d: can't reserve %pR\n", bar, + pci_warn(pdev, "BAR %d: can't reserve %pR\n", bar, &pdev->resource[bar]); return -EBUSY; } @@ -3625,7 +3697,7 @@ static void __pci_set_master(struct pci_dev *dev, bool enable) else cmd = old_cmd & ~PCI_COMMAND_MASTER; if (cmd != old_cmd) { - dev_dbg(&dev->dev, "%s bus mastering\n", + pci_dbg(dev, "%s bus mastering\n", enable ? "enabling" : "disabling"); pci_write_config_word(dev, PCI_COMMAND, cmd); } @@ -3726,7 +3798,7 @@ int pci_set_cacheline_size(struct pci_dev *dev) if (cacheline_size == pci_cache_line_size) return 0; - dev_printk(KERN_DEBUG, &dev->dev, "cache line size of %d is not supported\n", + pci_printk(KERN_DEBUG, dev, "cache line size of %d is not supported\n", pci_cache_line_size << 2); return -EINVAL; @@ -3755,7 +3827,7 @@ int pci_set_mwi(struct pci_dev *dev) pci_read_config_word(dev, PCI_COMMAND, &cmd); if (!(cmd & PCI_COMMAND_INVALIDATE)) { - dev_dbg(&dev->dev, "enabling Mem-Wr-Inval\n"); + pci_dbg(dev, "enabling Mem-Wr-Inval\n"); cmd |= PCI_COMMAND_INVALIDATE; pci_write_config_word(dev, PCI_COMMAND, cmd); } @@ -3972,13 +4044,13 @@ static void pci_flr_wait(struct pci_dev *dev) pci_read_config_dword(dev, PCI_COMMAND, &id); while (id == ~0) { if (delay > timeout) { - dev_warn(&dev->dev, "not ready %dms after FLR; giving up\n", + pci_warn(dev, "not ready %dms after FLR; giving up\n", 100 + delay - 1); return; } if (delay > 1000) - dev_info(&dev->dev, "not ready %dms after FLR; waiting\n", + pci_info(dev, "not ready %dms after FLR; waiting\n", 100 + delay - 1); msleep(delay); @@ -3987,7 +4059,7 @@ static void pci_flr_wait(struct pci_dev *dev) } if (delay > 1000) - dev_info(&dev->dev, "ready %dms after FLR\n", 100 + delay - 1); + pci_info(dev, "ready %dms after FLR\n", 100 + delay - 1); } /** @@ -4019,7 +4091,7 @@ static bool pcie_has_flr(struct pci_dev *dev) void pcie_flr(struct pci_dev *dev) { if (!pci_wait_for_pending_transaction(dev)) - dev_err(&dev->dev, "timed out waiting for pending transaction; performing function level reset anyway\n"); + pci_err(dev, "timed out waiting for pending transaction; performing function level reset anyway\n"); pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_BCR_FLR); pci_flr_wait(dev); @@ -4052,7 +4124,7 @@ static int pci_af_flr(struct pci_dev *dev, int probe) */ if (!pci_wait_for_pending(dev, pos + PCI_AF_CTRL, PCI_AF_STATUS_TP << 8)) - dev_err(&dev->dev, "timed out waiting for pending transaction; performing AF function level reset anyway\n"); + pci_err(dev, "timed out waiting for pending transaction; performing AF function level reset anyway\n"); pci_write_config_byte(dev, pos + PCI_AF_CTRL, PCI_AF_CTRL_FLR); pci_flr_wait(dev); @@ -5175,12 +5247,12 @@ void pci_add_dma_alias(struct pci_dev *dev, u8 devfn) dev->dma_alias_mask = kcalloc(BITS_TO_LONGS(U8_MAX), sizeof(long), GFP_KERNEL); if (!dev->dma_alias_mask) { - dev_warn(&dev->dev, "Unable to allocate DMA alias mask\n"); + pci_warn(dev, "Unable to allocate DMA alias mask\n"); return; } set_bit(devfn, dev->dma_alias_mask); - dev_info(&dev->dev, "Enabling fixed DMA alias to %02x.%d\n", + pci_info(dev, "Enabling fixed DMA alias to %02x.%d\n", PCI_SLOT(devfn), PCI_FUNC(devfn)); } @@ -5329,7 +5401,7 @@ static void pci_request_resource_alignment(struct pci_dev *dev, int bar, return; if (r->flags & IORESOURCE_PCI_FIXED) { - dev_info(&dev->dev, "BAR%d %pR: ignoring requested alignment %#llx\n", + pci_info(dev, "BAR%d %pR: ignoring requested alignment %#llx\n", bar, r, (unsigned long long)align); return; } @@ -5366,7 +5438,7 @@ static void pci_request_resource_alignment(struct pci_dev *dev, int bar, * devices and we use the second. */ - dev_info(&dev->dev, "BAR%d %pR: requesting alignment to %#llx\n", + pci_info(dev, "BAR%d %pR: requesting alignment to %#llx\n", bar, r, (unsigned long long)align); if (resize) { @@ -5412,13 +5484,11 @@ void pci_reassigndev_resource_alignment(struct pci_dev *dev) if (dev->hdr_type == PCI_HEADER_TYPE_NORMAL && (dev->class >> 8) == PCI_CLASS_BRIDGE_HOST) { - dev_warn(&dev->dev, - "Can't reassign resources to host bridge.\n"); + pci_warn(dev, "Can't reassign resources to host bridge\n"); return; } - dev_info(&dev->dev, - "Disabling memory decoding and releasing memory resources.\n"); + pci_info(dev, "Disabling memory decoding and releasing memory resources\n"); pci_read_config_word(dev, PCI_COMMAND, &command); command &= ~PCI_COMMAND_MEMORY; pci_write_config_word(dev, PCI_COMMAND, command); diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index f6b58b32a67c..fcd81911b127 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -38,21 +38,21 @@ int pci_probe_reset_function(struct pci_dev *dev); * struct pci_platform_pm_ops - Firmware PM callbacks * * @is_manageable: returns 'true' if given device is power manageable by the - * platform firmware + * platform firmware * * @set_state: invokes the platform firmware to set the device's power state * * @get_state: queries the platform firmware for a device's current power state * * @choose_state: returns PCI power state of given device preferred by the - * platform; to be used during system-wide transitions from a - * sleeping state to the working state and vice versa + * platform; to be used during system-wide transitions from a + * sleeping state to the working state and vice versa * * @set_wakeup: enables/disables wakeup capability for the device * * @need_resume: returns 'true' if the given device (which is currently - * suspended) needs to be resumed to be configured for system - * wakeup. + * suspended) needs to be resumed to be configured for system + * wakeup. * * If given platform is generally capable of power managing PCI devices, all of * these callbacks are mandatory. @@ -112,7 +112,7 @@ struct pci_vpd_ops { struct pci_vpd { const struct pci_vpd_ops *ops; - struct bin_attribute *attr; /* descriptor for sysfs VPD entry */ + struct bin_attribute *attr; /* Descriptor for sysfs VPD entry */ struct mutex lock; unsigned int len; u16 flag; @@ -199,7 +199,7 @@ extern const struct attribute_group *pci_bus_groups[]; /** * pci_match_one_device - Tell if a PCI device structure has a matching - * PCI device id structure + * PCI device id structure * @id: single PCI device id structure to match * @dev: the PCI device structure to match against * @@ -231,7 +231,7 @@ struct pci_slot_attribute { enum pci_bar_type { pci_bar_unknown, /* Standard PCI BAR probe */ - pci_bar_io, /* An io port BAR */ + pci_bar_io, /* An I/O port BAR */ pci_bar_mem32, /* A 32-bit memory BAR */ pci_bar_mem64, /* A 64-bit memory BAR */ }; @@ -255,24 +255,24 @@ void pci_disable_bridge_window(struct pci_dev *dev); /* Single Root I/O Virtualization */ struct pci_sriov { - int pos; /* capability position */ - int nres; /* number of resources */ - u32 cap; /* SR-IOV Capabilities */ - u16 ctrl; /* SR-IOV Control */ - u16 total_VFs; /* total VFs associated with the PF */ - u16 initial_VFs; /* initial VFs associated with the PF */ - u16 num_VFs; /* number of VFs available */ - u16 offset; /* first VF Routing ID offset */ - u16 stride; /* following VF stride */ - u16 vf_device; /* VF device ID */ - u32 pgsz; /* page size for BAR alignment */ - u8 link; /* Function Dependency Link */ - u8 max_VF_buses; /* max buses consumed by VFs */ - u16 driver_max_VFs; /* max num VFs driver supports */ - struct pci_dev *dev; /* lowest numbered PF */ - struct pci_dev *self; /* this PF */ - resource_size_t barsz[PCI_SRIOV_NUM_BARS]; /* VF BAR size */ - bool drivers_autoprobe; /* auto probing of VFs by driver */ + int pos; /* Capability position */ + int nres; /* Number of resources */ + u32 cap; /* SR-IOV Capabilities */ + u16 ctrl; /* SR-IOV Control */ + u16 total_VFs; /* Total VFs associated with the PF */ + u16 initial_VFs; /* Initial VFs associated with the PF */ + u16 num_VFs; /* Number of VFs available */ + u16 offset; /* First VF Routing ID offset */ + u16 stride; /* Following VF stride */ + u16 vf_device; /* VF device ID */ + u32 pgsz; /* Page size for BAR alignment */ + u8 link; /* Function Dependency Link */ + u8 max_VF_buses; /* Max buses consumed by VFs */ + u16 driver_max_VFs; /* Max num VFs driver supports */ + struct pci_dev *dev; /* Lowest numbered PF */ + struct pci_dev *self; /* This PF */ + resource_size_t barsz[PCI_SRIOV_NUM_BARS]; /* VF BAR size */ + bool drivers_autoprobe; /* Auto probing of VFs by driver */ }; /* pci_dev priv_flags */ @@ -335,13 +335,33 @@ static inline resource_size_t pci_resource_alignment(struct pci_dev *dev, if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END) return pci_sriov_resource_alignment(dev, resno); #endif - if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS) + if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS) return pci_cardbus_resource_alignment(res); return resource_alignment(res); } void pci_enable_acs(struct pci_dev *dev); +#ifdef CONFIG_PCIEASPM +void pcie_aspm_init_link_state(struct pci_dev *pdev); +void pcie_aspm_exit_link_state(struct pci_dev *pdev); +void pcie_aspm_pm_state_change(struct pci_dev *pdev); +void pcie_aspm_powersave_config_link(struct pci_dev *pdev); +#else +static inline void pcie_aspm_init_link_state(struct pci_dev *pdev) { } +static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev) { } +static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev) { } +static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev) { } +#endif + +#ifdef CONFIG_PCIEASPM_DEBUG +void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev); +void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev); +#else +static inline void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev) { } +static inline void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev) { } +#endif + #ifdef CONFIG_PCIE_PTM void pci_ptm_init(struct pci_dev *dev); #else diff --git a/drivers/pci/pcie/Kconfig b/drivers/pci/pcie/Kconfig index ac53edbc9613..b12e28b3d8f9 100644 --- a/drivers/pci/pcie/Kconfig +++ b/drivers/pci/pcie/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # PCI Express Port Bus Configuration # @@ -92,7 +93,7 @@ config PCIE_PME config PCIE_DPC bool "PCIe Downstream Port Containment support" - depends on PCIEPORTBUS + depends on PCIEPORTBUS && PCIEAER default n help This enables PCI Express Downstream Port Containment (DPC) diff --git a/drivers/pci/pcie/aer/Kconfig b/drivers/pci/pcie/aer/Kconfig index 7d1437b01fdd..5a64eb3d6c7a 100644 --- a/drivers/pci/pcie/aer/Kconfig +++ b/drivers/pci/pcie/aer/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # PCI Express Root Port Device AER Configuration # diff --git a/drivers/pci/pcie/aer/Kconfig.debug b/drivers/pci/pcie/aer/Kconfig.debug index 9142949734f5..67e02174b65b 100644 --- a/drivers/pci/pcie/aer/Kconfig.debug +++ b/drivers/pci/pcie/aer/Kconfig.debug @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # PCI Express Root Port Device AER Debug Configuration # diff --git a/drivers/pci/pcie/aer/aer_inject.c b/drivers/pci/pcie/aer/aer_inject.c index 2b6a59266689..25e1feb962c5 100644 --- a/drivers/pci/pcie/aer/aer_inject.c +++ b/drivers/pci/pcie/aer/aer_inject.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCIe AER software error injection support. * @@ -9,12 +10,6 @@ * * Copyright 2009 Intel Corporation. * Huang Ying <ying.huang@intel.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; version 2 - * of the License. - * */ #include <linux/module.h> @@ -344,14 +339,14 @@ static int aer_inject(struct aer_error_inj *einj) return -ENODEV; rpdev = pcie_find_root_port(dev); if (!rpdev) { - dev_err(&dev->dev, "aer_inject: Root port not found\n"); + pci_err(dev, "aer_inject: Root port not found\n"); ret = -ENODEV; goto out_put; } pos_cap_err = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR); if (!pos_cap_err) { - dev_err(&dev->dev, "aer_inject: Device doesn't support AER\n"); + pci_err(dev, "aer_inject: Device doesn't support AER\n"); ret = -EPROTONOSUPPORT; goto out_put; } @@ -362,8 +357,7 @@ static int aer_inject(struct aer_error_inj *einj) rp_pos_cap_err = pci_find_ext_capability(rpdev, PCI_EXT_CAP_ID_ERR); if (!rp_pos_cap_err) { - dev_err(&rpdev->dev, - "aer_inject: Root port doesn't support AER\n"); + pci_err(rpdev, "aer_inject: Root port doesn't support AER\n"); ret = -EPROTONOSUPPORT; goto out_put; } @@ -411,16 +405,14 @@ static int aer_inject(struct aer_error_inj *einj) if (!aer_mask_override && einj->cor_status && !(einj->cor_status & ~cor_mask)) { ret = -EINVAL; - dev_warn(&dev->dev, - "aer_inject: The correctable error(s) is masked by device\n"); + pci_warn(dev, "aer_inject: The correctable error(s) is masked by device\n"); spin_unlock_irqrestore(&inject_lock, flags); goto out_put; } if (!aer_mask_override && einj->uncor_status && !(einj->uncor_status & ~uncor_mask)) { ret = -EINVAL; - dev_warn(&dev->dev, - "aer_inject: The uncorrectable error(s) is masked by device\n"); + pci_warn(dev, "aer_inject: The uncorrectable error(s) is masked by device\n"); spin_unlock_irqrestore(&inject_lock, flags); goto out_put; } @@ -483,7 +475,7 @@ static int aer_inject(struct aer_error_inj *einj) einj->cor_status, einj->uncor_status, pci_name(dev)); aer_irq(-1, edev); } else { - dev_err(&rpdev->dev, "aer_inject: AER device not found\n"); + pci_err(rpdev, "aer_inject: AER device not found\n"); ret = -ENODEV; } out_put: diff --git a/drivers/pci/pcie/aer/aerdrv.c b/drivers/pci/pcie/aer/aerdrv.c index 6ff5f5b4f5e6..da8331f5684d 100644 --- a/drivers/pci/pcie/aer/aerdrv.c +++ b/drivers/pci/pcie/aer/aerdrv.c @@ -1,10 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * drivers/pci/pcie/aer/aerdrv.c * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * * This file implements the AER root port service driver. The driver will * register an irq handler. When root port triggers an AER interrupt, the irq * handler will collect root port status and schedule a work. @@ -326,7 +323,7 @@ static pci_ers_result_t aer_root_reset(struct pci_dev *dev) pci_write_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, reg32); pci_reset_bridge_secondary_bus(dev); - dev_printk(KERN_DEBUG, &dev->dev, "Root Port link has been reset\n"); + pci_printk(KERN_DEBUG, dev, "Root Port link has been reset\n"); /* Clear Root Error Status */ pci_read_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, ®32); diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c index 8d7448063fd1..a4bfea52e7d4 100644 --- a/drivers/pci/pcie/aer/aerdrv_core.c +++ b/drivers/pci/pcie/aer/aerdrv_core.c @@ -1,10 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * drivers/pci/pcie/aer/aerdrv_core.c * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * * This file implements the core part of PCIe AER. When a PCIe * error is delivered, an error message will be collected and printed to * console, then, an error recovery procedure will be executed by following @@ -226,9 +223,8 @@ static bool find_source_device(struct pci_dev *parent, pci_walk_bus(parent->subordinate, find_device_iter, e_info); if (!e_info->error_dev_num) { - dev_printk(KERN_DEBUG, &parent->dev, - "can't find device of ID%04x\n", - e_info->id); + pci_printk(KERN_DEBUG, parent, "can't find device of ID%04x\n", + e_info->id); return false; } return true; @@ -256,7 +252,7 @@ static int report_error_detected(struct pci_dev *dev, void *data) * of a driver for this device is unaware of * its hw state. */ - dev_printk(KERN_DEBUG, &dev->dev, "device has %s\n", + pci_printk(KERN_DEBUG, dev, "device has %s\n", dev->driver ? "no AER-aware driver" : "no driver"); } @@ -366,7 +362,7 @@ static pci_ers_result_t broadcast_error_message(struct pci_dev *dev, { struct aer_broadcast_data result_data; - dev_printk(KERN_DEBUG, &dev->dev, "broadcast %s message\n", error_mesg); + pci_printk(KERN_DEBUG, dev, "broadcast %s message\n", error_mesg); result_data.state = state; if (cb == report_error_detected) result_data.result = PCI_ERS_RESULT_CAN_RECOVER; @@ -415,7 +411,7 @@ static pci_ers_result_t broadcast_error_message(struct pci_dev *dev, static pci_ers_result_t default_reset_link(struct pci_dev *dev) { pci_reset_bridge_secondary_bus(dev); - dev_printk(KERN_DEBUG, &dev->dev, "downstream link has been reset\n"); + pci_printk(KERN_DEBUG, dev, "downstream link has been reset\n"); return PCI_ERS_RESULT_RECOVERED; } @@ -467,15 +463,13 @@ static pci_ers_result_t reset_link(struct pci_dev *dev) } else if (udev->has_secondary_link) { status = default_reset_link(udev); } else { - dev_printk(KERN_DEBUG, &dev->dev, - "no link-reset support at upstream device %s\n", + pci_printk(KERN_DEBUG, dev, "no link-reset support at upstream device %s\n", pci_name(udev)); return PCI_ERS_RESULT_DISCONNECT; } if (status != PCI_ERS_RESULT_RECOVERED) { - dev_printk(KERN_DEBUG, &dev->dev, - "link reset at upstream device %s failed\n", + pci_printk(KERN_DEBUG, dev, "link reset at upstream device %s failed\n", pci_name(udev)); return PCI_ERS_RESULT_DISCONNECT; } @@ -539,13 +533,13 @@ static void do_recovery(struct pci_dev *dev, int severity) "resume", report_resume); - dev_info(&dev->dev, "AER: Device recovery successful\n"); + pci_info(dev, "AER: Device recovery successful\n"); return; failed: pci_uevent_ers(dev, PCI_ERS_RESULT_DISCONNECT); /* TODO: Should kernel panic here? */ - dev_info(&dev->dev, "AER: Device recovery failed\n"); + pci_info(dev, "AER: Device recovery failed\n"); } /** @@ -636,7 +630,8 @@ static void aer_recover_work_func(struct work_struct *work) continue; } cper_print_aer(pdev, entry.severity, entry.regs); - do_recovery(pdev, entry.severity); + if (entry.severity != AER_CORRECTABLE) + do_recovery(pdev, entry.severity); pci_dev_put(pdev); } } @@ -663,7 +658,7 @@ static int get_device_error_info(struct pci_dev *dev, struct aer_err_info *info) /* The device might not support AER */ if (!pos) - return 1; + return 0; if (info->severity == AER_CORRECTABLE) { pci_read_config_dword(dev, pos + PCI_ERR_COR_STATUS, diff --git a/drivers/pci/pcie/aer/aerdrv_errprint.c b/drivers/pci/pcie/aer/aerdrv_errprint.c index 54c4b691e51f..6a352e638699 100644 --- a/drivers/pci/pcie/aer/aerdrv_errprint.c +++ b/drivers/pci/pcie/aer/aerdrv_errprint.c @@ -1,10 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * drivers/pci/pcie/aer/aerdrv_errprint.c * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * * Format error messages and print them to console. * * Copyright (C) 2006 Intel Corp. @@ -132,7 +129,7 @@ static const char *aer_agent_string[] = { static void __print_tlp_header(struct pci_dev *dev, struct aer_header_log_regs *t) { - dev_err(&dev->dev, " TLP Header: %08x %08x %08x %08x\n", + pci_err(dev, " TLP Header: %08x %08x %08x %08x\n", t->dw0, t->dw1, t->dw2, t->dw3); } @@ -155,10 +152,10 @@ static void __aer_print_error(struct pci_dev *dev, aer_uncorrectable_error_string[i] : NULL; if (errmsg) - dev_err(&dev->dev, " [%2d] %-22s%s\n", i, errmsg, + pci_err(dev, " [%2d] %-22s%s\n", i, errmsg, info->first_error == i ? " (First)" : ""); else - dev_err(&dev->dev, " [%2d] Unknown Error Bit%s\n", + pci_err(dev, " [%2d] Unknown Error Bit%s\n", i, info->first_error == i ? " (First)" : ""); } } @@ -169,7 +166,7 @@ void aer_print_error(struct pci_dev *dev, struct aer_err_info *info) int id = ((dev->bus->number << 8) | dev->devfn); if (!info->status) { - dev_err(&dev->dev, "PCIe Bus Error: severity=%s, type=Unaccessible, id=%04x(Unregistered Agent ID)\n", + pci_err(dev, "PCIe Bus Error: severity=%s, type=Unaccessible, id=%04x(Unregistered Agent ID)\n", aer_error_severity_string[info->severity], id); goto out; } @@ -177,11 +174,11 @@ void aer_print_error(struct pci_dev *dev, struct aer_err_info *info) layer = AER_GET_LAYER_ERROR(info->severity, info->status); agent = AER_GET_AGENT(info->severity, info->status); - dev_err(&dev->dev, "PCIe Bus Error: severity=%s, type=%s, id=%04x(%s)\n", + pci_err(dev, "PCIe Bus Error: severity=%s, type=%s, id=%04x(%s)\n", aer_error_severity_string[info->severity], aer_error_layer[layer], id, aer_agent_string[agent]); - dev_err(&dev->dev, " device [%04x:%04x] error status/mask=%08x/%08x\n", + pci_err(dev, " device [%04x:%04x] error status/mask=%08x/%08x\n", dev->vendor, dev->device, info->status, info->mask); @@ -192,7 +189,7 @@ void aer_print_error(struct pci_dev *dev, struct aer_err_info *info) out: if (info->id && info->error_dev_num > 1 && info->id == id) - dev_err(&dev->dev, " Error of this Agent(%04x) is reported first\n", id); + pci_err(dev, " Error of this Agent(%04x) is reported first\n", id); trace_aer_event(dev_name(&dev->dev), (info->status & ~info->mask), info->severity); @@ -200,7 +197,7 @@ out: void aer_print_port_info(struct pci_dev *dev, struct aer_err_info *info) { - dev_info(&dev->dev, "AER: %s%s error received: id=%04x\n", + pci_info(dev, "AER: %s%s error received: id=%04x\n", info->multi_error_valid ? "Multiple " : "", aer_error_severity_string[info->severity], info->id); } @@ -242,13 +239,13 @@ void cper_print_aer(struct pci_dev *dev, int aer_severity, layer = AER_GET_LAYER_ERROR(aer_severity, status); agent = AER_GET_AGENT(aer_severity, status); - dev_err(&dev->dev, "aer_status: 0x%08x, aer_mask: 0x%08x\n", status, mask); + pci_err(dev, "aer_status: 0x%08x, aer_mask: 0x%08x\n", status, mask); cper_print_bits("", status, status_strs, status_strs_size); - dev_err(&dev->dev, "aer_layer=%s, aer_agent=%s\n", + pci_err(dev, "aer_layer=%s, aer_agent=%s\n", aer_error_layer[layer], aer_agent_string[agent]); if (aer_severity != AER_CORRECTABLE) - dev_err(&dev->dev, "aer_uncor_severity: 0x%08x\n", + pci_err(dev, "aer_uncor_severity: 0x%08x\n", aer->uncor_severity); if (tlp_header_valid) diff --git a/drivers/pci/pcie/aer/ecrc.c b/drivers/pci/pcie/aer/ecrc.c index a2747a663bc9..26d3cac9e635 100644 --- a/drivers/pci/pcie/aer/ecrc.c +++ b/drivers/pci/pcie/aer/ecrc.c @@ -1,23 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Enables/disables PCIe ECRC checking. * * (C) Copyright 2009 Hewlett-Packard Development Company, L.P. * Andrew Patterson <andrew.patterson@hp.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - * 02111-1307, USA. - * */ #include <linux/kernel.h> diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index 9783e10da3a9..57feef2ecfe7 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -43,18 +43,6 @@ #define ASPM_STATE_ALL (ASPM_STATE_L0S | ASPM_STATE_L1 | \ ASPM_STATE_L1SS) -/* - * When L1 substates are enabled, the LTR L1.2 threshold is a timing parameter - * that decides whether L1.1 or L1.2 is entered (Refer PCIe spec for details). - * Not sure is there is a way to "calculate" this on the fly, but maybe we - * could turn it into a parameter in future. This value has been taken from - * the following files from Intel's coreboot (which is the only code I found - * to have used this): - * https://www.coreboot.org/pipermail/coreboot-gerrit/2015-March/021134.html - * https://review.coreboot.org/#/c/8832/ - */ -#define LTR_L1_2_THRESHOLD_BITS ((1 << 21) | (1 << 23) | (1 << 30)) - struct aspm_latency { u32 l0s; /* L0s latency (nsec) */ u32 l1; /* L1 latency (nsec) */ @@ -278,7 +266,7 @@ static void pcie_aspm_configure_common_clock(struct pcie_link_state *link) return; /* Training failed. Restore common clock configurations */ - dev_err(&parent->dev, "ASPM: Could not configure common clock\n"); + pci_err(parent, "ASPM: Could not configure common clock\n"); list_for_each_entry(child, &linkbus->devices, bus_list) pcie_capability_write_word(child, PCI_EXP_LNKCTL, child_reg[PCI_FUNC(child->devfn)]); @@ -328,11 +316,36 @@ static u32 calc_l1ss_pwron(struct pci_dev *pdev, u32 scale, u32 val) case 2: return val * 100; } - dev_err(&pdev->dev, "%s: Invalid T_PwrOn scale: %u\n", - __func__, scale); + pci_err(pdev, "%s: Invalid T_PwrOn scale: %u\n", __func__, scale); return 0; } +static void encode_l12_threshold(u32 threshold_us, u32 *scale, u32 *value) +{ + u64 threshold_ns = threshold_us * 1000; + + /* See PCIe r3.1, sec 7.33.3 and sec 6.18 */ + if (threshold_ns < 32) { + *scale = 0; + *value = threshold_ns; + } else if (threshold_ns < 1024) { + *scale = 1; + *value = threshold_ns >> 5; + } else if (threshold_ns < 32768) { + *scale = 2; + *value = threshold_ns >> 10; + } else if (threshold_ns < 1048576) { + *scale = 3; + *value = threshold_ns >> 15; + } else if (threshold_ns < 33554432) { + *scale = 4; + *value = threshold_ns >> 20; + } else { + *scale = 5; + *value = threshold_ns >> 25; + } +} + struct aspm_register_info { u32 support:2; u32 enabled:2; @@ -443,6 +456,7 @@ static void aspm_calc_l1ss_info(struct pcie_link_state *link, struct aspm_register_info *dwreg) { u32 val1, val2, scale1, scale2; + u32 t_common_mode, t_power_on, l1_2_threshold, scale, value; link->l1ss.up_cap_ptr = upreg->l1ss_cap_ptr; link->l1ss.dw_cap_ptr = dwreg->l1ss_cap_ptr; @@ -454,16 +468,7 @@ static void aspm_calc_l1ss_info(struct pcie_link_state *link, /* Choose the greater of the two Port Common_Mode_Restore_Times */ val1 = (upreg->l1ss_cap & PCI_L1SS_CAP_CM_RESTORE_TIME) >> 8; val2 = (dwreg->l1ss_cap & PCI_L1SS_CAP_CM_RESTORE_TIME) >> 8; - if (val1 > val2) - link->l1ss.ctl1 |= val1 << 8; - else - link->l1ss.ctl1 |= val2 << 8; - - /* - * We currently use LTR L1.2 threshold to be fixed constant picked from - * Intel's coreboot. - */ - link->l1ss.ctl1 |= LTR_L1_2_THRESHOLD_BITS; + t_common_mode = max(val1, val2); /* Choose the greater of the two Port T_POWER_ON times */ val1 = (upreg->l1ss_cap & PCI_L1SS_CAP_P_PWR_ON_VALUE) >> 19; @@ -472,10 +477,27 @@ static void aspm_calc_l1ss_info(struct pcie_link_state *link, scale2 = (dwreg->l1ss_cap & PCI_L1SS_CAP_P_PWR_ON_SCALE) >> 16; if (calc_l1ss_pwron(link->pdev, scale1, val1) > - calc_l1ss_pwron(link->downstream, scale2, val2)) + calc_l1ss_pwron(link->downstream, scale2, val2)) { link->l1ss.ctl2 |= scale1 | (val1 << 3); - else + t_power_on = calc_l1ss_pwron(link->pdev, scale1, val1); + } else { link->l1ss.ctl2 |= scale2 | (val2 << 3); + t_power_on = calc_l1ss_pwron(link->downstream, scale2, val2); + } + + /* + * Set LTR_L1.2_THRESHOLD to the time required to transition the + * Link from L0 to L1.2 and back to L0 so we enter L1.2 only if + * downstream devices report (via LTR) that they can tolerate at + * least that much latency. + * + * Based on PCIe r3.1, sec 5.5.3.3.1, Figures 5-16 and 5-17, and + * Table 5-11. T(POWER_OFF) is at most 2us and T(L1.2) is at + * least 4us. + */ + l1_2_threshold = 2 + 4 + t_common_mode + t_power_on; + encode_l12_threshold(l1_2_threshold, &scale, &value); + link->l1ss.ctl1 |= t_common_mode << 8 | scale << 29 | value << 16; } static void pcie_aspm_cap_init(struct pcie_link_state *link, int blacklist) @@ -786,7 +808,7 @@ static int pcie_aspm_sanity_check(struct pci_dev *pdev) */ pcie_capability_read_dword(child, PCI_EXP_DEVCAP, ®32); if (!(reg32 & PCI_EXP_DEVCAP_RBER) && !aspm_force) { - dev_info(&child->dev, "disabling ASPM on pre-1.1 PCIe device. You can enable it with 'pcie_aspm=force'\n"); + pci_info(child, "disabling ASPM on pre-1.1 PCIe device. You can enable it with 'pcie_aspm=force'\n"); return -EINVAL; } } @@ -1027,7 +1049,7 @@ static void __pci_disable_link_state(struct pci_dev *pdev, int state, bool sem) * ignored in this situation. */ if (aspm_disabled) { - dev_warn(&pdev->dev, "can't disable ASPM; OS doesn't have ASPM control\n"); + pci_warn(pdev, "can't disable ASPM; OS doesn't have ASPM control\n"); return; } diff --git a/drivers/pci/pcie/pcie-dpc.c b/drivers/pci/pcie/pcie-dpc.c index 2d976a623ddc..38e40c6c576f 100644 --- a/drivers/pci/pcie/pcie-dpc.c +++ b/drivers/pci/pcie/pcie-dpc.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCI Express Downstream Port Containment services driver * Author: Keith Busch <keith.busch@intel.com> * * Copyright (C) 2016 Intel Corp. - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. */ #include <linux/delay.h> @@ -15,34 +12,15 @@ #include <linux/pci.h> #include <linux/pcieport_if.h> #include "../pci.h" - -struct rp_pio_header_log_regs { - u32 dw0; - u32 dw1; - u32 dw2; - u32 dw3; -}; - -struct dpc_rp_pio_regs { - u32 status; - u32 mask; - u32 severity; - u32 syserror; - u32 exception; - - struct rp_pio_header_log_regs header_log; - u32 impspec_log; - u32 tlp_prefix_log[4]; - u32 log_size; - u16 first_error; -}; +#include "aer/aerdrv.h" struct dpc_dev { struct pcie_device *dev; struct work_struct work; - int cap_pos; - bool rp; + u16 cap_pos; + bool rp_extensions; u32 rp_pio_status; + u8 rp_log_size; }; static const char * const rp_pio_error_string[] = { @@ -72,13 +50,13 @@ static int dpc_wait_rp_inactive(struct dpc_dev *dpc) unsigned long timeout = jiffies + HZ; struct pci_dev *pdev = dpc->dev->port; struct device *dev = &dpc->dev->device; - u16 status; + u16 cap = dpc->cap_pos, status; - pci_read_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_STATUS, &status); + pci_read_config_word(pdev, cap + PCI_EXP_DPC_STATUS, &status); while (status & PCI_EXP_DPC_RP_BUSY && !time_after(jiffies, timeout)) { msleep(10); - pci_read_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_STATUS, &status); + pci_read_config_word(pdev, cap + PCI_EXP_DPC_STATUS, &status); } if (status & PCI_EXP_DPC_RP_BUSY) { dev_warn(dev, "DPC root port still busy\n"); @@ -104,11 +82,12 @@ static void dpc_wait_link_inactive(struct dpc_dev *dpc) dev_warn(dev, "Link state not disabled for DPC event\n"); } -static void interrupt_event_handler(struct work_struct *work) +static void dpc_work(struct work_struct *work) { struct dpc_dev *dpc = container_of(work, struct dpc_dev, work); struct pci_dev *dev, *temp, *pdev = dpc->dev->port; struct pci_bus *parent = pdev->subordinate; + u16 cap = dpc->cap_pos, ctl; pci_lock_rescan_remove(); list_for_each_entry_safe_reverse(dev, temp, &parent->devices, @@ -124,159 +103,127 @@ static void interrupt_event_handler(struct work_struct *work) pci_unlock_rescan_remove(); dpc_wait_link_inactive(dpc); - if (dpc->rp && dpc_wait_rp_inactive(dpc)) + if (dpc->rp_extensions && dpc_wait_rp_inactive(dpc)) return; - if (dpc->rp && dpc->rp_pio_status) { - pci_write_config_dword(pdev, - dpc->cap_pos + PCI_EXP_DPC_RP_PIO_STATUS, - dpc->rp_pio_status); + if (dpc->rp_extensions && dpc->rp_pio_status) { + pci_write_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_STATUS, + dpc->rp_pio_status); dpc->rp_pio_status = 0; } - pci_write_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_STATUS, + pci_write_config_word(pdev, cap + PCI_EXP_DPC_STATUS, PCI_EXP_DPC_STATUS_TRIGGER | PCI_EXP_DPC_STATUS_INTERRUPT); -} -static void dpc_rp_pio_print_tlp_header(struct device *dev, - struct rp_pio_header_log_regs *t) -{ - dev_err(dev, "TLP Header: %#010x %#010x %#010x %#010x\n", - t->dw0, t->dw1, t->dw2, t->dw3); + pci_read_config_word(pdev, cap + PCI_EXP_DPC_CTL, &ctl); + pci_write_config_word(pdev, cap + PCI_EXP_DPC_CTL, + ctl | PCI_EXP_DPC_CTL_INT_EN); } -static void dpc_rp_pio_print_error(struct dpc_dev *dpc, - struct dpc_rp_pio_regs *rp_pio) +static void dpc_process_rp_pio_error(struct dpc_dev *dpc) { struct device *dev = &dpc->dev->device; + struct pci_dev *pdev = dpc->dev->port; + u16 cap = dpc->cap_pos, dpc_status, first_error; + u32 status, mask, sev, syserr, exc, dw0, dw1, dw2, dw3, log, prefix; int i; - u32 status; + pci_read_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_STATUS, &status); + pci_read_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_MASK, &mask); dev_err(dev, "rp_pio_status: %#010x, rp_pio_mask: %#010x\n", - rp_pio->status, rp_pio->mask); + status, mask); + dpc->rp_pio_status = status; + + pci_read_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_SEVERITY, &sev); + pci_read_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_SYSERROR, &syserr); + pci_read_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_EXCEPTION, &exc); dev_err(dev, "RP PIO severity=%#010x, syserror=%#010x, exception=%#010x\n", - rp_pio->severity, rp_pio->syserror, rp_pio->exception); + sev, syserr, exc); - status = (rp_pio->status & ~rp_pio->mask); + /* Get First Error Pointer */ + pci_read_config_word(pdev, cap + PCI_EXP_DPC_STATUS, &dpc_status); + first_error = (dpc_status & 0x1f00) >> 8; + status &= ~mask; for (i = 0; i < ARRAY_SIZE(rp_pio_error_string); i++) { - if (!(status & (1 << i))) - continue; - - dev_err(dev, "[%2d] %s%s\n", i, rp_pio_error_string[i], - rp_pio->first_error == i ? " (First)" : ""); + if (status & (1 << i)) + dev_err(dev, "[%2d] %s%s\n", i, rp_pio_error_string[i], + first_error == i ? " (First)" : ""); } - dpc_rp_pio_print_tlp_header(dev, &rp_pio->header_log); - if (rp_pio->log_size == 4) + if (dpc->rp_log_size < 4) return; - dev_err(dev, "RP PIO ImpSpec Log %#010x\n", rp_pio->impspec_log); + pci_read_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_HEADER_LOG, + &dw0); + pci_read_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_HEADER_LOG + 4, + &dw1); + pci_read_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_HEADER_LOG + 8, + &dw2); + pci_read_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_HEADER_LOG + 12, + &dw3); + dev_err(dev, "TLP Header: %#010x %#010x %#010x %#010x\n", + dw0, dw1, dw2, dw3); + + if (dpc->rp_log_size < 5) + return; + pci_read_config_dword(pdev, cap + PCI_EXP_DPC_RP_PIO_IMPSPEC_LOG, &log); + dev_err(dev, "RP PIO ImpSpec Log %#010x\n", log); - for (i = 0; i < rp_pio->log_size - 5; i++) - dev_err(dev, "TLP Prefix Header: dw%d, %#010x\n", i, - rp_pio->tlp_prefix_log[i]); + for (i = 0; i < dpc->rp_log_size - 5; i++) { + pci_read_config_dword(pdev, + cap + PCI_EXP_DPC_RP_PIO_TLPPREFIX_LOG, &prefix); + dev_err(dev, "TLP Prefix Header: dw%d, %#010x\n", i, prefix); + } } -static void dpc_rp_pio_get_info(struct dpc_dev *dpc, - struct dpc_rp_pio_regs *rp_pio) +static irqreturn_t dpc_irq(int irq, void *context) { + struct dpc_dev *dpc = (struct dpc_dev *)context; struct pci_dev *pdev = dpc->dev->port; struct device *dev = &dpc->dev->device; - int i; - u16 cap; - u16 status; - - pci_read_config_dword(pdev, dpc->cap_pos + PCI_EXP_DPC_RP_PIO_STATUS, - &rp_pio->status); - pci_read_config_dword(pdev, dpc->cap_pos + PCI_EXP_DPC_RP_PIO_MASK, - &rp_pio->mask); - - pci_read_config_dword(pdev, dpc->cap_pos + PCI_EXP_DPC_RP_PIO_SEVERITY, - &rp_pio->severity); - pci_read_config_dword(pdev, dpc->cap_pos + PCI_EXP_DPC_RP_PIO_SYSERROR, - &rp_pio->syserror); - pci_read_config_dword(pdev, dpc->cap_pos + PCI_EXP_DPC_RP_PIO_EXCEPTION, - &rp_pio->exception); - - /* Get First Error Pointer */ - pci_read_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_STATUS, &status); - rp_pio->first_error = (status & 0x1f00) >> 8; + u16 cap = dpc->cap_pos, ctl, status, source, reason, ext_reason; - pci_read_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_CAP, &cap); - rp_pio->log_size = (cap & PCI_EXP_DPC_RP_PIO_LOG_SIZE) >> 8; - if (rp_pio->log_size < 4 || rp_pio->log_size > 9) { - dev_err(dev, "RP PIO log size %u is invalid\n", - rp_pio->log_size); - return; - } + pci_read_config_word(pdev, cap + PCI_EXP_DPC_CTL, &ctl); - pci_read_config_dword(pdev, - dpc->cap_pos + PCI_EXP_DPC_RP_PIO_HEADER_LOG, - &rp_pio->header_log.dw0); - pci_read_config_dword(pdev, - dpc->cap_pos + PCI_EXP_DPC_RP_PIO_HEADER_LOG + 4, - &rp_pio->header_log.dw1); - pci_read_config_dword(pdev, - dpc->cap_pos + PCI_EXP_DPC_RP_PIO_HEADER_LOG + 8, - &rp_pio->header_log.dw2); - pci_read_config_dword(pdev, - dpc->cap_pos + PCI_EXP_DPC_RP_PIO_HEADER_LOG + 12, - &rp_pio->header_log.dw3); - if (rp_pio->log_size == 4) - return; + if (!(ctl & PCI_EXP_DPC_CTL_INT_EN) || ctl == (u16)(~0)) + return IRQ_NONE; - pci_read_config_dword(pdev, - dpc->cap_pos + PCI_EXP_DPC_RP_PIO_IMPSPEC_LOG, - &rp_pio->impspec_log); - for (i = 0; i < rp_pio->log_size - 5; i++) - pci_read_config_dword(pdev, - dpc->cap_pos + PCI_EXP_DPC_RP_PIO_TLPPREFIX_LOG, - &rp_pio->tlp_prefix_log[i]); -} + pci_read_config_word(pdev, cap + PCI_EXP_DPC_STATUS, &status); -static void dpc_process_rp_pio_error(struct dpc_dev *dpc) -{ - struct dpc_rp_pio_regs rp_pio_regs; + if (!(status & PCI_EXP_DPC_STATUS_INTERRUPT)) + return IRQ_NONE; - dpc_rp_pio_get_info(dpc, &rp_pio_regs); - dpc_rp_pio_print_error(dpc, &rp_pio_regs); + if (!(status & PCI_EXP_DPC_STATUS_TRIGGER)) { + pci_write_config_word(pdev, cap + PCI_EXP_DPC_STATUS, + PCI_EXP_DPC_STATUS_INTERRUPT); + return IRQ_HANDLED; + } - dpc->rp_pio_status = rp_pio_regs.status; -} + pci_write_config_word(pdev, cap + PCI_EXP_DPC_CTL, + ctl & ~PCI_EXP_DPC_CTL_INT_EN); -static irqreturn_t dpc_irq(int irq, void *context) -{ - struct dpc_dev *dpc = (struct dpc_dev *)context; - struct pci_dev *pdev = dpc->dev->port; - struct device *dev = &dpc->dev->device; - u16 status, source; - - pci_read_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_STATUS, &status); - pci_read_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_SOURCE_ID, + pci_read_config_word(pdev, cap + PCI_EXP_DPC_SOURCE_ID, &source); - if (!status || status == (u16)(~0)) - return IRQ_NONE; dev_info(dev, "DPC containment event, status:%#06x source:%#06x\n", status, source); - if (status & PCI_EXP_DPC_STATUS_TRIGGER) { - u16 reason = (status >> 1) & 0x3; - u16 ext_reason = (status >> 5) & 0x3; - - dev_warn(dev, "DPC %s detected, remove downstream devices\n", - (reason == 0) ? "unmasked uncorrectable error" : - (reason == 1) ? "ERR_NONFATAL" : - (reason == 2) ? "ERR_FATAL" : - (ext_reason == 0) ? "RP PIO error" : - (ext_reason == 1) ? "software trigger" : - "reserved error"); - /* show RP PIO error detail information */ - if (reason == 3 && ext_reason == 0) - dpc_process_rp_pio_error(dpc); - - schedule_work(&dpc->work); - } + reason = (status & PCI_EXP_DPC_STATUS_TRIGGER_RSN) >> 1; + ext_reason = (status & PCI_EXP_DPC_STATUS_TRIGGER_RSN_EXT) >> 5; + + dev_warn(dev, "DPC %s detected, remove downstream devices\n", + (reason == 0) ? "unmasked uncorrectable error" : + (reason == 1) ? "ERR_NONFATAL" : + (reason == 2) ? "ERR_FATAL" : + (ext_reason == 0) ? "RP PIO error" : + (ext_reason == 1) ? "software trigger" : + "reserved error"); + /* show RP PIO error detail information */ + if (dpc->rp_extensions && reason == 3 && ext_reason == 0) + dpc_process_rp_pio_error(dpc); + + schedule_work(&dpc->work); + return IRQ_HANDLED; } @@ -289,13 +236,16 @@ static int dpc_probe(struct pcie_device *dev) int status; u16 ctl, cap; + if (pcie_aer_get_firmware_first(pdev)) + return -ENOTSUPP; + dpc = devm_kzalloc(device, sizeof(*dpc), GFP_KERNEL); if (!dpc) return -ENOMEM; dpc->cap_pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_DPC); dpc->dev = dev; - INIT_WORK(&dpc->work, interrupt_event_handler); + INIT_WORK(&dpc->work, dpc_work); set_service_data(dev, dpc); status = devm_request_irq(device, dev->irq, dpc_irq, IRQF_SHARED, @@ -309,15 +259,23 @@ static int dpc_probe(struct pcie_device *dev) pci_read_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_CAP, &cap); pci_read_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_CTL, &ctl); - dpc->rp = (cap & PCI_EXP_DPC_CAP_RP_EXT); + dpc->rp_extensions = (cap & PCI_EXP_DPC_CAP_RP_EXT); + if (dpc->rp_extensions) { + dpc->rp_log_size = (cap & PCI_EXP_DPC_RP_PIO_LOG_SIZE) >> 8; + if (dpc->rp_log_size < 4 || dpc->rp_log_size > 9) { + dev_err(device, "RP PIO log size %u is invalid\n", + dpc->rp_log_size); + dpc->rp_log_size = 0; + } + } ctl = (ctl & 0xfff4) | PCI_EXP_DPC_CTL_EN_NONFATAL | PCI_EXP_DPC_CTL_INT_EN; pci_write_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_CTL, ctl); dev_info(device, "DPC error containment capabilities: Int Msg #%d, RPExt%c PoisonedTLP%c SwTrigger%c RP PIO Log %d, DL_ActiveErr%c\n", - cap & 0xf, FLAG(cap, PCI_EXP_DPC_CAP_RP_EXT), + cap & PCI_EXP_DPC_IRQ, FLAG(cap, PCI_EXP_DPC_CAP_RP_EXT), FLAG(cap, PCI_EXP_DPC_CAP_POISONED_TLP), - FLAG(cap, PCI_EXP_DPC_CAP_SW_TRIGGER), (cap >> 8) & 0xf, + FLAG(cap, PCI_EXP_DPC_CAP_SW_TRIGGER), dpc->rp_log_size, FLAG(cap, PCI_EXP_DPC_CAP_DL_ACTIVE)); return status; } diff --git a/drivers/pci/pcie/pme.c b/drivers/pci/pcie/pme.c index df290aa58dce..5480f54f7612 100644 --- a/drivers/pci/pcie/pme.c +++ b/drivers/pci/pcie/pme.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCIe Native PME support * * Copyright (C) 2007 - 2009 Intel Corp * Copyright (C) 2007 - 2009 Shaohua Li <shaohua.li@intel.com> * Copyright (C) 2009 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc. - * - * This file is subject to the terms and conditions of the GNU General Public - * License V2. See the file "COPYING" in the main directory of this archive - * for more details. */ #include <linux/pci.h> @@ -198,14 +195,14 @@ static void pcie_pme_handle_request(struct pci_dev *port, u16 req_id) * assuming that the PME was reported by a PCIe-PCI bridge that * used devfn different from zero. */ - dev_dbg(&port->dev, "PME interrupt generated for non-existent device %02x:%02x.%d\n", + pci_dbg(port, "PME interrupt generated for non-existent device %02x:%02x.%d\n", busnr, PCI_SLOT(devfn), PCI_FUNC(devfn)); found = pcie_pme_from_pci_bridge(bus, 0); } out: if (!found) - dev_dbg(&port->dev, "Spurious native PME interrupt!\n"); + pci_dbg(port, "Spurious native PME interrupt!\n"); } /** @@ -345,7 +342,7 @@ static int pcie_pme_probe(struct pcie_device *srv) return ret; } - dev_info(&port->dev, "Signaling PME with IRQ %d\n", srv->irq); + pci_info(port, "Signaling PME with IRQ %d\n", srv->irq); pcie_pme_mark_devices(port); pcie_pme_interrupt_enable(port, true); diff --git a/drivers/pci/pcie/portdrv_acpi.c b/drivers/pci/pcie/portdrv_acpi.c index 6b8c2f1d0e71..319c94976873 100644 --- a/drivers/pci/pcie/portdrv_acpi.c +++ b/drivers/pci/pcie/portdrv_acpi.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCIe Port Native Services Support, ACPI-Related Part * * Copyright (C) 2010 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc. - * - * This file is subject to the terms and conditions of the GNU General Public - * License V2. See the file "COPYING" in the main directory of this archive - * for more details. */ #include <linux/pci.h> diff --git a/drivers/pci/pcie/portdrv_bus.c b/drivers/pci/pcie/portdrv_bus.c index 87e79a6ffb5a..f0fba552a0e2 100644 --- a/drivers/pci/pcie/portdrv_bus.c +++ b/drivers/pci/pcie/portdrv_bus.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * File: portdrv_bus.c * Purpose: PCI Express Port Bus Driver's Bus Overloading Functions diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index a59210350c44..ef3bad4ad010 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -216,9 +216,9 @@ static int get_port_device_capability(struct pci_dev *dev) return 0; cap_mask = PCIE_PORT_SERVICE_PME | PCIE_PORT_SERVICE_HP - | PCIE_PORT_SERVICE_VC | PCIE_PORT_SERVICE_DPC; + | PCIE_PORT_SERVICE_VC; if (pci_aer_available()) - cap_mask |= PCIE_PORT_SERVICE_AER; + cap_mask |= PCIE_PORT_SERVICE_AER | PCIE_PORT_SERVICE_DPC; if (pcie_ports_auto) pcie_port_platform_notify(dev, &cap_mask); diff --git a/drivers/pci/pcie/ptm.c b/drivers/pci/pcie/ptm.c index bab8ac63c4f3..98cfa30f3fae 100644 --- a/drivers/pci/pcie/ptm.c +++ b/drivers/pci/pcie/ptm.c @@ -1,15 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCI Express Precision Time Measurement * Copyright (c) 2016, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #include <linux/module.h> @@ -33,7 +25,7 @@ static void pci_ptm_info(struct pci_dev *dev) dev->ptm_granularity); break; } - dev_info(&dev->dev, "PTM enabled%s, %s granularity\n", + pci_info(dev, "PTM enabled%s, %s granularity\n", dev->ptm_root ? " (root)" : "", clock_desc); } diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 14e0ea1ff38b..ef5377438a1e 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * probe.c - PCI detection and setup code */ @@ -69,8 +70,8 @@ static int find_anything(struct device *dev, void *data) } /* - * Some device drivers need know if pci is initiated. - * Basically, we think pci is not initiated when there + * Some device drivers need know if PCI is initiated. + * Basically, we think PCI is not initiated when there * is no device to be found on the pci_bus_type. */ int no_pci_devices(void) @@ -116,12 +117,16 @@ static u64 pci_size(u64 base, u64 maxbase, u64 mask) if (!size) return 0; - /* Get the lowest of them to find the decode size, and - from that the extent. */ + /* + * Get the lowest of them to find the decode size, and from that + * the extent. + */ size = (size & ~(size-1)) - 1; - /* base == maxbase can be valid only if the BAR has - already been programmed with all 1s. */ + /* + * base == maxbase can be valid only if the BAR has already been + * programmed with all 1s. + */ if (base == maxbase && ((base | size) & mask) != mask) return 0; @@ -164,7 +169,7 @@ static inline unsigned long decode_bar(struct pci_dev *dev, u32 bar) #define PCI_COMMAND_DECODE_ENABLE (PCI_COMMAND_MEMORY | PCI_COMMAND_IO) /** - * pci_read_base - read a PCI BAR + * pci_read_base - Read a PCI BAR * @dev: the PCI device * @type: type of the BAR * @res: resource buffer to be filled in @@ -253,7 +258,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, sz64 = pci_size(l64, sz64, mask64); if (!sz64) { - dev_info(&dev->dev, FW_BUG "reg 0x%x: invalid BAR (can't size)\n", + pci_info(dev, FW_BUG "reg 0x%x: invalid BAR (can't size)\n", pos); goto fail; } @@ -264,7 +269,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, res->flags |= IORESOURCE_UNSET | IORESOURCE_DISABLED; res->start = 0; res->end = 0; - dev_err(&dev->dev, "reg 0x%x: can't handle BAR larger than 4GB (size %#010llx)\n", + pci_err(dev, "reg 0x%x: can't handle BAR larger than 4GB (size %#010llx)\n", pos, (unsigned long long)sz64); goto out; } @@ -274,7 +279,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, res->flags |= IORESOURCE_UNSET; res->start = 0; res->end = sz64; - dev_info(&dev->dev, "reg 0x%x: can't handle BAR above 4GB (bus address %#010llx)\n", + pci_info(dev, "reg 0x%x: can't handle BAR above 4GB (bus address %#010llx)\n", pos, (unsigned long long)l64); goto out; } @@ -301,7 +306,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, res->flags |= IORESOURCE_UNSET; res->start = 0; res->end = region.end - region.start; - dev_info(&dev->dev, "reg 0x%x: initial BAR value %#010llx invalid\n", + pci_info(dev, "reg 0x%x: initial BAR value %#010llx invalid\n", pos, (unsigned long long)region.start); } @@ -312,7 +317,7 @@ fail: res->flags = 0; out: if (res->flags) - dev_printk(KERN_DEBUG, &dev->dev, "reg 0x%x: %pR\n", pos, res); + pci_printk(KERN_DEBUG, dev, "reg 0x%x: %pR\n", pos, res); return (res->flags & IORESOURCE_MEM_64) ? 1 : 0; } @@ -375,7 +380,7 @@ static void pci_read_bridge_io(struct pci_bus *child) region.start = base; region.end = limit + io_granularity - 1; pcibios_bus_to_resource(dev->bus, res, ®ion); - dev_printk(KERN_DEBUG, &dev->dev, " bridge window %pR\n", res); + pci_printk(KERN_DEBUG, dev, " bridge window %pR\n", res); } } @@ -397,7 +402,7 @@ static void pci_read_bridge_mmio(struct pci_bus *child) region.start = base; region.end = limit + 0xfffff; pcibios_bus_to_resource(dev->bus, res, ®ion); - dev_printk(KERN_DEBUG, &dev->dev, " bridge window %pR\n", res); + pci_printk(KERN_DEBUG, dev, " bridge window %pR\n", res); } } @@ -437,7 +442,7 @@ static void pci_read_bridge_mmio_pref(struct pci_bus *child) limit = (pci_bus_addr_t) limit64; if (base != base64) { - dev_err(&dev->dev, "can't handle bridge window above 4GB (bus address %#010llx)\n", + pci_err(dev, "can't handle bridge window above 4GB (bus address %#010llx)\n", (unsigned long long) base64); return; } @@ -450,7 +455,7 @@ static void pci_read_bridge_mmio_pref(struct pci_bus *child) region.start = base; region.end = limit + 0xfffff; pcibios_bus_to_resource(dev->bus, res, ®ion); - dev_printk(KERN_DEBUG, &dev->dev, " bridge window %pR\n", res); + pci_printk(KERN_DEBUG, dev, " bridge window %pR\n", res); } } @@ -463,7 +468,7 @@ void pci_read_bridge_bases(struct pci_bus *child) if (pci_is_root_bus(child)) /* It's a host bus, nothing to read */ return; - dev_info(&dev->dev, "PCI bridge to %pR%s\n", + pci_info(dev, "PCI bridge to %pR%s\n", &child->busn_res, dev->transparent ? " (subtractive decode)" : ""); @@ -480,7 +485,7 @@ void pci_read_bridge_bases(struct pci_bus *child) if (res && res->flags) { pci_bus_add_resource(child, res, PCI_SUBTRACTIVE_DECODE); - dev_printk(KERN_DEBUG, &dev->dev, + pci_printk(KERN_DEBUG, dev, " bridge window %pR (subtractive decode)\n", res); } @@ -764,7 +769,7 @@ static int pci_register_host_bridge(struct pci_host_bridge *bridge) bridge->bus = bus; - /* temporarily move resources off the list */ + /* Temporarily move resources off the list */ list_splice_init(&bridge->windows, &resources); bus->sysdata = bridge->sysdata; bus->msi = bridge->msi; @@ -776,7 +781,7 @@ static int pci_register_host_bridge(struct pci_host_bridge *bridge) b = pci_find_bus(pci_domain_nr(bus), bridge->busnr); if (b) { - /* If we already got to this bus through a different bridge, ignore it */ + /* Ignore it if we already got here via a different bridge */ dev_dbg(&b->dev, "bus already known\n"); err = -EEXIST; goto free; @@ -869,9 +874,7 @@ static struct pci_bus *pci_alloc_child_bus(struct pci_bus *parent, int i; int ret; - /* - * Allocate a new bus, and inherit stuff from the parent.. - */ + /* Allocate a new bus and inherit stuff from the parent */ child = pci_alloc_bus(parent); if (!child) return NULL; @@ -882,16 +885,14 @@ static struct pci_bus *pci_alloc_child_bus(struct pci_bus *parent, child->sysdata = parent->sysdata; child->bus_flags = parent->bus_flags; - /* initialize some portions of the bus device, but don't register it - * now as the parent is not properly set up yet. + /* + * Initialize some portions of the bus device, but don't register + * it now as the parent is not properly set up yet. */ child->dev.class = &pcibus_class; dev_set_name(&child->dev, "%04x:%02x", pci_domain_nr(child), busnr); - /* - * Set up the primary, secondary and subordinate - * bus numbers. - */ + /* Set up the primary, secondary and subordinate bus numbers */ child->number = child->busn_res.start = busnr; child->primary = parent->busn_res.start; child->busn_res.end = 0xff; @@ -907,7 +908,7 @@ static struct pci_bus *pci_alloc_child_bus(struct pci_bus *parent, pci_set_bus_of_node(child); pci_set_bus_speed(child); - /* Set up default resource pointers and names.. */ + /* Set up default resource pointers and names */ for (i = 0; i < PCI_BRIDGE_RESOURCE_NUM; i++) { child->resource[i] = &bridge->resource[PCI_BRIDGE_RESOURCES+i]; child->resource[i]->name = child->name; @@ -1005,11 +1006,11 @@ static int pci_scan_bridge_extend(struct pci_bus *bus, struct pci_dev *dev, secondary = (buses >> 8) & 0xFF; subordinate = (buses >> 16) & 0xFF; - dev_dbg(&dev->dev, "scanning [bus %02x-%02x] behind bridge, pass %d\n", + pci_dbg(dev, "scanning [bus %02x-%02x] behind bridge, pass %d\n", secondary, subordinate, pass); if (!primary && (primary != bus->number) && secondary && subordinate) { - dev_warn(&dev->dev, "Primary bus is hard wired to 0\n"); + pci_warn(dev, "Primary bus is hard wired to 0\n"); primary = bus->number; } @@ -1017,13 +1018,15 @@ static int pci_scan_bridge_extend(struct pci_bus *bus, struct pci_dev *dev, if (!pass && (primary != bus->number || secondary <= bus->number || secondary > subordinate)) { - dev_info(&dev->dev, "bridge configuration invalid ([bus %02x-%02x]), reconfiguring\n", + pci_info(dev, "bridge configuration invalid ([bus %02x-%02x]), reconfiguring\n", secondary, subordinate); broken = 1; } - /* Disable MasterAbortMode during probing to avoid reporting - of bus errors (in some architectures) */ + /* + * Disable Master-Abort Mode during probing to avoid reporting of + * bus errors in some architectures. + */ pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &bctl); pci_write_config_word(dev, PCI_BRIDGE_CONTROL, bctl & ~PCI_BRIDGE_CTL_MASTER_ABORT); @@ -1033,18 +1036,19 @@ static int pci_scan_bridge_extend(struct pci_bus *bus, struct pci_dev *dev, if ((secondary || subordinate) && !pcibios_assign_all_busses() && !is_cardbus && !broken) { unsigned int cmax; + /* - * Bus already configured by firmware, process it in the first - * pass and just note the configuration. + * Bus already configured by firmware, process it in the + * first pass and just note the configuration. */ if (pass) goto out; /* - * The bus might already exist for two reasons: Either we are - * rescanning the bus or the bus is reachable through more than - * one bridge. The second case can happen with the i450NX - * chipset. + * The bus might already exist for two reasons: Either we + * are rescanning the bus or the bus is reachable through + * more than one bridge. The second case can happen with + * the i450NX chipset. */ child = pci_find_bus(pci_domain_nr(bus), secondary); if (!child) { @@ -1058,24 +1062,29 @@ static int pci_scan_bridge_extend(struct pci_bus *bus, struct pci_dev *dev, cmax = pci_scan_child_bus(child); if (cmax > subordinate) - dev_warn(&dev->dev, "bridge has subordinate %02x but max busn %02x\n", + pci_warn(dev, "bridge has subordinate %02x but max busn %02x\n", subordinate, cmax); - /* subordinate should equal child->busn_res.end */ + + /* Subordinate should equal child->busn_res.end */ if (subordinate > max) max = subordinate; } else { + /* * We need to assign a number to this bus which we always * do in the second pass. */ if (!pass) { if (pcibios_assign_all_busses() || broken || is_cardbus) - /* Temporarily disable forwarding of the - configuration cycles on all bridges in - this bus segment to avoid possible - conflicts in the second pass between two - bridges programmed with overlapping - bus ranges. */ + + /* + * Temporarily disable forwarding of the + * configuration cycles on all bridges in + * this bus segment to avoid possible + * conflicts in the second pass between two + * bridges programmed with overlapping bus + * ranges. + */ pci_write_config_dword(dev, PCI_PRIMARY_BUS, buses & ~0xffffff); goto out; @@ -1084,9 +1093,11 @@ static int pci_scan_bridge_extend(struct pci_bus *bus, struct pci_dev *dev, /* Clear errors */ pci_write_config_word(dev, PCI_STATUS, 0xffff); - /* Prevent assigning a bus number that already exists. - * This can happen when a bridge is hot-plugged, so in - * this case we only re-scan this bus. */ + /* + * Prevent assigning a bus number that already exists. + * This can happen when a bridge is hot-plugged, so in this + * case we only re-scan this bus. + */ child = pci_find_bus(pci_domain_nr(bus), max+1); if (!child) { child = pci_add_new_bus(bus, dev, max+1); @@ -1113,19 +1124,18 @@ static int pci_scan_bridge_extend(struct pci_bus *bus, struct pci_dev *dev, buses |= CARDBUS_LATENCY_TIMER << 24; } - /* - * We need to blast all three values with a single write. - */ + /* We need to blast all three values with a single write */ pci_write_config_dword(dev, PCI_PRIMARY_BUS, buses); if (!is_cardbus) { child->bridge_ctl = bctl; max = pci_scan_child_bus_extend(child, available_buses); } else { + /* - * For CardBus bridges, we leave 4 bus numbers - * as cards with a PCI-to-PCI bridge can be - * inserted later. + * For CardBus bridges, we leave 4 bus numbers as + * cards with a PCI-to-PCI bridge can be inserted + * later. */ for (i = 0; i < CARDBUS_RESERVE_BUSNR; i++) { struct pci_bus *parent = bus; @@ -1141,10 +1151,11 @@ static int pci_scan_bridge_extend(struct pci_bus *bus, struct pci_dev *dev, parent = parent->parent; } if (j) { + /* - * Often, there are two cardbus bridges - * -- try to leave one valid bus number - * for each one. + * Often, there are two CardBus + * bridges -- try to leave one + * valid bus number for each one. */ i /= 2; break; @@ -1152,9 +1163,8 @@ static int pci_scan_bridge_extend(struct pci_bus *bus, struct pci_dev *dev, } max += i; } - /* - * Set the subordinate bus number to its real value. - */ + + /* Set subordinate bus number to its real value */ pci_bus_update_busn_res_end(child, max); pci_write_config_byte(dev, PCI_SUBORDINATE_BUS, max); } @@ -1295,7 +1305,7 @@ static void set_pcie_thunderbolt(struct pci_dev *dev) } /** - * pci_ext_cfg_is_aliased - is ext config space just an alias of std config? + * pci_ext_cfg_is_aliased - Is ext config space just an alias of std config? * @dev: PCI device * * PCI Express to PCI/PCI-X Bridge Specification, rev 1.0, 4.1.4 says that @@ -1332,7 +1342,7 @@ static bool pci_ext_cfg_is_aliased(struct pci_dev *dev) } /** - * pci_cfg_space_size - get the configuration space size of the PCI device. + * pci_cfg_space_size - Get the configuration space size of the PCI device * @dev: PCI device * * Regular PCI devices have 256 bytes, but PCI-X 2 and PCI Express devices @@ -1398,7 +1408,7 @@ static void pci_msi_setup_pci_dev(struct pci_dev *dev) } /** - * pci_intx_mask_broken - test PCI_COMMAND_INTX_DISABLE writability + * pci_intx_mask_broken - Test PCI_COMMAND_INTX_DISABLE writability * @dev: PCI device * * Test whether PCI_COMMAND_INTX_DISABLE is writable for @dev. Check this @@ -1426,11 +1436,11 @@ static int pci_intx_mask_broken(struct pci_dev *dev) } /** - * pci_setup_device - fill in class and map information of a device + * pci_setup_device - Fill in class and map information of a device * @dev: the device structure to fill * * Initialize the device structure with information about the device's - * vendor,class,memory and IO-space addresses,IRQ lines etc. + * vendor,class,memory and IO-space addresses, IRQ lines etc. * Called at initialisation of the PCI subsystem and by CardBus services. * Returns 0 on success and negative if unknown type of device (not normal, * bridge or CardBus). @@ -1456,8 +1466,11 @@ int pci_setup_device(struct pci_dev *dev) set_pcie_port_type(dev); pci_dev_assign_slot(dev); - /* Assume 32-bit PCI; let 64-bit PCI cards (which are far rarer) - set this higher, assuming the system even supports it. */ + + /* + * Assume 32-bit PCI; let 64-bit PCI cards (which are far rarer) + * set this higher, assuming the system even supports it. + */ dev->dma_mask = 0xffffffff; dev_set_name(&dev->dev, "%04x:%02x:%02x.%d", pci_domain_nr(dev->bus), @@ -1468,13 +1481,13 @@ int pci_setup_device(struct pci_dev *dev) dev->revision = class & 0xff; dev->class = class >> 8; /* upper 3 bytes */ - dev_printk(KERN_DEBUG, &dev->dev, "[%04x:%04x] type %02x class %#08x\n", + pci_printk(KERN_DEBUG, dev, "[%04x:%04x] type %02x class %#08x\n", dev->vendor, dev->device, dev->hdr_type, dev->class); - /* need to have dev->class ready */ + /* Need to have dev->class ready */ dev->cfg_size = pci_cfg_space_size(dev); - /* need to have dev->cfg_size ready */ + /* Need to have dev->cfg_size ready */ set_pcie_thunderbolt(dev); /* "Unknown power state" */ @@ -1482,13 +1495,14 @@ int pci_setup_device(struct pci_dev *dev) /* Early fixups, before probing the BARs */ pci_fixup_device(pci_fixup_early, dev); - /* device class may be changed after fixup */ + + /* Device class may be changed after fixup */ class = dev->class >> 8; if (dev->non_compliant_bars) { pci_read_config_word(dev, PCI_COMMAND, &cmd); if (cmd & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) { - dev_info(&dev->dev, "device has non-compliant BARs; disabling IO/MEM decoding\n"); + pci_info(dev, "device has non-compliant BARs; disabling IO/MEM decoding\n"); cmd &= ~PCI_COMMAND_IO; cmd &= ~PCI_COMMAND_MEMORY; pci_write_config_word(dev, PCI_COMMAND, cmd); @@ -1521,14 +1535,14 @@ int pci_setup_device(struct pci_dev *dev) res = &dev->resource[0]; res->flags = LEGACY_IO_RESOURCE; pcibios_bus_to_resource(dev->bus, res, ®ion); - dev_info(&dev->dev, "legacy IDE quirk: reg 0x10: %pR\n", + pci_info(dev, "legacy IDE quirk: reg 0x10: %pR\n", res); region.start = 0x3F6; region.end = 0x3F6; res = &dev->resource[1]; res->flags = LEGACY_IO_RESOURCE; pcibios_bus_to_resource(dev->bus, res, ®ion); - dev_info(&dev->dev, "legacy IDE quirk: reg 0x14: %pR\n", + pci_info(dev, "legacy IDE quirk: reg 0x14: %pR\n", res); } if ((progif & 4) == 0) { @@ -1537,14 +1551,14 @@ int pci_setup_device(struct pci_dev *dev) res = &dev->resource[2]; res->flags = LEGACY_IO_RESOURCE; pcibios_bus_to_resource(dev->bus, res, ®ion); - dev_info(&dev->dev, "legacy IDE quirk: reg 0x18: %pR\n", + pci_info(dev, "legacy IDE quirk: reg 0x18: %pR\n", res); region.start = 0x376; region.end = 0x376; res = &dev->resource[3]; res->flags = LEGACY_IO_RESOURCE; pcibios_bus_to_resource(dev->bus, res, ®ion); - dev_info(&dev->dev, "legacy IDE quirk: reg 0x1c: %pR\n", + pci_info(dev, "legacy IDE quirk: reg 0x1c: %pR\n", res); } } @@ -1553,9 +1567,12 @@ int pci_setup_device(struct pci_dev *dev) case PCI_HEADER_TYPE_BRIDGE: /* bridge header */ if (class != PCI_CLASS_BRIDGE_PCI) goto bad; - /* The PCI-to-PCI bridge spec requires that subtractive - decoding (i.e. transparent) bridge must have programming - interface code of 0x01. */ + + /* + * The PCI-to-PCI bridge spec requires that subtractive + * decoding (i.e. transparent) bridge must have programming + * interface code of 0x01. + */ pci_read_irq(dev); dev->transparent = ((dev->class & 0xff) == 1); pci_read_bases(dev, 2, PCI_ROM_ADDRESS1); @@ -1577,12 +1594,12 @@ int pci_setup_device(struct pci_dev *dev) break; default: /* unknown header */ - dev_err(&dev->dev, "unknown header type %02x, ignoring device\n", + pci_err(dev, "unknown header type %02x, ignoring device\n", dev->hdr_type); return -EIO; bad: - dev_err(&dev->dev, "ignoring class %#08x (doesn't match header type %02x)\n", + pci_err(dev, "ignoring class %#08x (doesn't match header type %02x)\n", dev->class, dev->hdr_type); dev->class = PCI_CLASS_NOT_DEFINED << 8; } @@ -1606,7 +1623,7 @@ static void pci_configure_mps(struct pci_dev *dev) return; if (pcie_bus_config == PCIE_BUS_TUNE_OFF) { - dev_warn(&dev->dev, "Max Payload Size %d, but upstream %s set to %d; if necessary, use \"pci=pcie_bus_safe\" and report a bug\n", + pci_warn(dev, "Max Payload Size %d, but upstream %s set to %d; if necessary, use \"pci=pcie_bus_safe\" and report a bug\n", mps, pci_name(bridge), p_mps); return; } @@ -1620,12 +1637,12 @@ static void pci_configure_mps(struct pci_dev *dev) rc = pcie_set_mps(dev, p_mps); if (rc) { - dev_warn(&dev->dev, "can't set Max Payload Size to %d; if necessary, use \"pci=pcie_bus_safe\" and report a bug\n", + pci_warn(dev, "can't set Max Payload Size to %d; if necessary, use \"pci=pcie_bus_safe\" and report a bug\n", p_mps); return; } - dev_info(&dev->dev, "Max Payload Size set to %d (was %d, max %d)\n", + pci_info(dev, "Max Payload Size set to %d (was %d, max %d)\n", p_mps, mps, 128 << dev->pcie_mpss); } @@ -1645,8 +1662,7 @@ static void program_hpp_type0(struct pci_dev *dev, struct hpp_type0 *hpp) hpp = &pci_default_type0; if (hpp->revision > 1) { - dev_warn(&dev->dev, - "PCI settings rev %d not supported; using defaults\n", + pci_warn(dev, "PCI settings rev %d not supported; using defaults\n", hpp->revision); hpp = &pci_default_type0; } @@ -1684,7 +1700,7 @@ static void program_hpp_type1(struct pci_dev *dev, struct hpp_type1 *hpp) if (!pos) return; - dev_warn(&dev->dev, "PCI-X settings not supported\n"); + pci_warn(dev, "PCI-X settings not supported\n"); } static bool pcie_root_rcb_set(struct pci_dev *dev) @@ -1714,7 +1730,7 @@ static void program_hpp_type2(struct pci_dev *dev, struct hpp_type2 *hpp) return; if (hpp->revision > 1) { - dev_warn(&dev->dev, "PCIe settings rev %d not supported\n", + pci_warn(dev, "PCIe settings rev %d not supported\n", hpp->revision); return; } @@ -1772,6 +1788,7 @@ static void program_hpp_type2(struct pci_dev *dev, struct hpp_type2 *hpp) /* Initialize Advanced Error Capabilities and Control Register */ pci_read_config_dword(dev, pos + PCI_ERR_CAP, ®32); reg32 = (reg32 & hpp->adv_err_cap_and) | hpp->adv_err_cap_or; + /* Don't enable ECRC generation or checking if unsupported */ if (!(reg32 & PCI_ERR_CAP_ECRC_GENC)) reg32 &= ~PCI_ERR_CAP_ECRC_GENE; @@ -1818,7 +1835,7 @@ int pci_configure_extended_tags(struct pci_dev *dev, void *ign) */ if (host->no_ext_tags) { if (ctl & PCI_EXP_DEVCTL_EXT_TAG) { - dev_info(&dev->dev, "disabling Extended Tags\n"); + pci_info(dev, "disabling Extended Tags\n"); pcie_capability_clear_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_EXT_TAG); } @@ -1826,7 +1843,7 @@ int pci_configure_extended_tags(struct pci_dev *dev, void *ign) } if (!(ctl & PCI_EXP_DEVCTL_EXT_TAG)) { - dev_info(&dev->dev, "enabling Extended Tags\n"); + pci_info(dev, "enabling Extended Tags\n"); pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_EXT_TAG); } @@ -1871,10 +1888,42 @@ static void pci_configure_relaxed_ordering(struct pci_dev *dev) if (root->dev_flags & PCI_DEV_FLAGS_NO_RELAXED_ORDERING) { pcie_capability_clear_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_RELAX_EN); - dev_info(&dev->dev, "Disable Relaxed Ordering because the Root Port didn't support it\n"); + pci_info(dev, "Relaxed Ordering disabled because the Root Port didn't support it\n"); } } +static void pci_configure_ltr(struct pci_dev *dev) +{ +#ifdef CONFIG_PCIEASPM + u32 cap; + struct pci_dev *bridge; + + if (!pci_is_pcie(dev)) + return; + + pcie_capability_read_dword(dev, PCI_EXP_DEVCAP2, &cap); + if (!(cap & PCI_EXP_DEVCAP2_LTR)) + return; + + /* + * Software must not enable LTR in an Endpoint unless the Root + * Complex and all intermediate Switches indicate support for LTR. + * PCIe r3.1, sec 6.18. + */ + if (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT) + dev->ltr_path = 1; + else { + bridge = pci_upstream_bridge(dev); + if (bridge && bridge->ltr_path) + dev->ltr_path = 1; + } + + if (dev->ltr_path) + pcie_capability_set_word(dev, PCI_EXP_DEVCTL2, + PCI_EXP_DEVCTL2_LTR_EN); +#endif +} + static void pci_configure_device(struct pci_dev *dev) { struct hotplug_params hpp; @@ -1883,6 +1932,7 @@ static void pci_configure_device(struct pci_dev *dev) pci_configure_mps(dev); pci_configure_extended_tags(dev, NULL); pci_configure_relaxed_ordering(dev); + pci_configure_ltr(dev); memset(&hpp, 0, sizeof(hpp)); ret = pci_get_hp_params(dev, &hpp); @@ -1902,10 +1952,11 @@ static void pci_release_capabilities(struct pci_dev *dev) } /** - * pci_release_dev - free a pci device structure when all users of it are finished. + * pci_release_dev - Free a PCI device structure when all users of it are + * finished * @dev: device that's been disconnected * - * Will be called only by the device core when all users of this pci device are + * Will be called only by the device core when all users of this PCI device are * done. */ static void pci_release_dev(struct device *dev) @@ -1993,7 +2044,7 @@ bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *l, if (pci_bus_read_config_dword(bus, devfn, PCI_VENDOR_ID, l)) return false; - /* some broken boards return 0 or ~0 if a slot is empty: */ + /* Some broken boards return 0 or ~0 if a slot is empty: */ if (*l == 0xffffffff || *l == 0x00000000 || *l == 0x0000ffff || *l == 0xffff0000) return false; @@ -2006,8 +2057,8 @@ bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *l, EXPORT_SYMBOL(pci_bus_read_dev_vendor_id); /* - * Read the config data for a PCI device, sanity-check it - * and fill in the dev structure... + * Read the config data for a PCI device, sanity-check it, + * and fill in the dev structure. */ static struct pci_dev *pci_scan_device(struct pci_bus *bus, int devfn) { @@ -2073,7 +2124,7 @@ static void pci_init_capabilities(struct pci_dev *dev) } /* - * This is the equivalent of pci_host_bridge_msi_domain that acts on + * This is the equivalent of pci_host_bridge_msi_domain() that acts on * devices. Firmware interfaces that can select the MSI domain on a * per-device basis should be called from here. */ @@ -2082,7 +2133,7 @@ static struct irq_domain *pci_dev_msi_domain(struct pci_dev *dev) struct irq_domain *d; /* - * If a domain has been set through the pcibios_add_device + * If a domain has been set through the pcibios_add_device() * callback, then this is the one (platform code knows best). */ d = dev_get_msi_domain(&dev->dev); @@ -2136,10 +2187,10 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus) /* Fix up broken headers */ pci_fixup_device(pci_fixup_header, dev); - /* moved out from quirk header fixup code */ + /* Moved out from quirk header fixup code */ pci_reassigndev_resource_alignment(dev); - /* Clear the state_saved flag. */ + /* Clear the state_saved flag */ dev->state_saved = false; /* Initialize various capabilities */ @@ -2156,7 +2207,7 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus) ret = pcibios_add_device(dev); WARN_ON(ret < 0); - /* Setup MSI irq domain */ + /* Set up MSI IRQ domain */ pci_set_msi_domain(dev); /* Notifier could use PCI capabilities */ @@ -2215,29 +2266,34 @@ static unsigned next_fn(struct pci_bus *bus, struct pci_dev *dev, unsigned fn) static int only_one_child(struct pci_bus *bus) { - struct pci_dev *parent = bus->self; + struct pci_dev *bridge = bus->self; - if (!parent || !pci_is_pcie(parent)) + /* + * Systems with unusual topologies set PCI_SCAN_ALL_PCIE_DEVS so + * we scan for all possible devices, not just Device 0. + */ + if (pci_has_flag(PCI_SCAN_ALL_PCIE_DEVS)) return 0; - if (pci_pcie_type(parent) == PCI_EXP_TYPE_ROOT_PORT) - return 1; /* - * PCIe downstream ports are bridges that normally lead to only a - * device 0, but if PCI_SCAN_ALL_PCIE_DEVS is set, scan all - * possible devices, not just device 0. See PCIe spec r3.0, - * sec 7.3.1. + * A PCIe Downstream Port normally leads to a Link with only Device + * 0 on it (PCIe spec r3.1, sec 7.3.1). As an optimization, scan + * only for Device 0 in that situation. + * + * Checking has_secondary_link is a hack to identify Downstream + * Ports because sometimes Switches are configured such that the + * PCIe Port Type labels are backwards. */ - if (parent->has_secondary_link && - !pci_has_flag(PCI_SCAN_ALL_PCIE_DEVS)) + if (bridge && pci_is_pcie(bridge) && bridge->has_secondary_link) return 1; + return 0; } /** - * pci_scan_slot - scan a PCI slot on a bus for devices. + * pci_scan_slot - Scan a PCI slot on a bus for devices * @bus: PCI bus to scan - * @devfn: slot number to scan (must have zero function.) + * @devfn: slot number to scan (must have zero function) * * Scan a PCI slot on the specified PCI bus for devices, adding * discovered devices to the @bus->devices list. New devices @@ -2268,7 +2324,7 @@ int pci_scan_slot(struct pci_bus *bus, int devfn) } } - /* only one slot has pcie device */ + /* Only one slot has PCIe device */ if (bus->self && nr) pcie_aspm_init_link_state(bus->self); @@ -2317,7 +2373,9 @@ static void pcie_write_mps(struct pci_dev *dev, int mps) if (pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT && dev->bus->self) - /* For "Performance", the assumption is made that + + /* + * For "Performance", the assumption is made that * downstream communication will never be larger than * the MRRS. So, the MPS only needs to be configured * for the upstream communication. This being the case, @@ -2334,27 +2392,30 @@ static void pcie_write_mps(struct pci_dev *dev, int mps) rc = pcie_set_mps(dev, mps); if (rc) - dev_err(&dev->dev, "Failed attempting to set the MPS\n"); + pci_err(dev, "Failed attempting to set the MPS\n"); } static void pcie_write_mrrs(struct pci_dev *dev) { int rc, mrrs; - /* In the "safe" case, do not configure the MRRS. There appear to be + /* + * In the "safe" case, do not configure the MRRS. There appear to be * issues with setting MRRS to 0 on a number of devices. */ if (pcie_bus_config != PCIE_BUS_PERFORMANCE) return; - /* For Max performance, the MRRS must be set to the largest supported + /* + * For max performance, the MRRS must be set to the largest supported * value. However, it cannot be configured larger than the MPS the * device or the bus can support. This should already be properly - * configured by a prior call to pcie_write_mps. + * configured by a prior call to pcie_write_mps(). */ mrrs = pcie_get_mps(dev); - /* MRRS is a R/W register. Invalid values can be written, but a + /* + * MRRS is a R/W register. Invalid values can be written, but a * subsequent read will verify if the value is acceptable or not. * If the MRRS value provided is not acceptable (e.g., too large), * shrink the value until it is acceptable to the HW. @@ -2364,12 +2425,12 @@ static void pcie_write_mrrs(struct pci_dev *dev) if (!rc) break; - dev_warn(&dev->dev, "Failed attempting to set the MRRS\n"); + pci_warn(dev, "Failed attempting to set the MRRS\n"); mrrs /= 2; } if (mrrs < 128) - dev_err(&dev->dev, "MRRS was unable to be configured with a safe value. If problems are experienced, try running with pci=pcie_bus_safe\n"); + pci_err(dev, "MRRS was unable to be configured with a safe value. If problems are experienced, try running with pci=pcie_bus_safe\n"); } static int pcie_bus_configure_set(struct pci_dev *dev, void *data) @@ -2389,14 +2450,15 @@ static int pcie_bus_configure_set(struct pci_dev *dev, void *data) pcie_write_mps(dev, mps); pcie_write_mrrs(dev); - dev_info(&dev->dev, "Max Payload Size set to %4d/%4d (was %4d), Max Read Rq %4d\n", + pci_info(dev, "Max Payload Size set to %4d/%4d (was %4d), Max Read Rq %4d\n", pcie_get_mps(dev), 128 << dev->pcie_mpss, orig_mps, pcie_get_readrq(dev)); return 0; } -/* pcie_bus_configure_settings requires that pci_walk_bus work in a top-down, +/* + * pcie_bus_configure_settings() requires that pci_walk_bus work in a top-down, * parents then children fashion. If this changes, then this code will not * work as designed. */ @@ -2410,7 +2472,8 @@ void pcie_bus_configure_settings(struct pci_bus *bus) if (!pci_is_pcie(bus->self)) return; - /* FIXME - Peer to peer DMA is possible, though the endpoint would need + /* + * FIXME - Peer to peer DMA is possible, though the endpoint would need * to be aware of the MPS of the destination. To work around this, * simply force the MPS of the entire system to the smallest possible. */ @@ -2464,7 +2527,7 @@ static unsigned int pci_scan_child_bus_extend(struct pci_bus *bus, for (devfn = 0; devfn < 0x100; devfn += 8) pci_scan_slot(bus, devfn); - /* Reserve buses for SR-IOV capability. */ + /* Reserve buses for SR-IOV capability */ used_buses = pci_iov_bus_range(bus); max += used_buses; @@ -2506,6 +2569,7 @@ static unsigned int pci_scan_child_bus_extend(struct pci_bus *bus, unsigned int buses = 0; if (!hotplug_bridges && normal_bridges == 1) { + /* * There is only one bridge on the bus (upstream * port) so it gets all available buses which it @@ -2514,6 +2578,7 @@ static unsigned int pci_scan_child_bus_extend(struct pci_bus *bus, */ buses = available_buses; } else if (dev->is_hotplug_bridge) { + /* * Distribute the extra buses between hotplug * bridges if any. @@ -2572,8 +2637,8 @@ unsigned int pci_scan_child_bus(struct pci_bus *bus) EXPORT_SYMBOL_GPL(pci_scan_child_bus); /** - * pcibios_root_bridge_prepare - Platform-specific host bridge setup. - * @bridge: Host bridge to set up. + * pcibios_root_bridge_prepare - Platform-specific host bridge setup + * @bridge: Host bridge to set up * * Default empty implementation. Replace with an architecture-specific setup * routine, if necessary. @@ -2620,6 +2685,39 @@ err_out: } EXPORT_SYMBOL_GPL(pci_create_root_bus); +int pci_host_probe(struct pci_host_bridge *bridge) +{ + struct pci_bus *bus, *child; + int ret; + + ret = pci_scan_root_bus_bridge(bridge); + if (ret < 0) { + dev_err(bridge->dev.parent, "Scanning root bridge failed"); + return ret; + } + + bus = bridge->bus; + + /* + * We insert PCI resources into the iomem_resource and + * ioport_resource trees in either pci_bus_claim_resources() + * or pci_bus_assign_resources(). + */ + if (pci_has_flag(PCI_PROBE_ONLY)) { + pci_bus_claim_resources(bus); + } else { + pci_bus_size_bridges(bus); + pci_bus_assign_resources(bus); + + list_for_each_entry(child, &bus->children, node) + pcie_bus_configure_settings(child); + } + + pci_bus_add_devices(bus); + return 0; +} +EXPORT_SYMBOL_GPL(pci_host_probe); + int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int bus_max) { struct resource *res = &b->busn_res; @@ -2776,7 +2874,7 @@ struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, EXPORT_SYMBOL(pci_scan_bus); /** - * pci_rescan_bus_bridge_resize - scan a PCI bus for devices. + * pci_rescan_bus_bridge_resize - Scan a PCI bus for devices * @bridge: PCI bridge for the bus to scan * * Scan a PCI bus and child buses for new devices, add them, @@ -2801,11 +2899,11 @@ unsigned int pci_rescan_bus_bridge_resize(struct pci_dev *bridge) } /** - * pci_rescan_bus - scan a PCI bus for devices. + * pci_rescan_bus - Scan a PCI bus for devices * @bus: PCI bus to scan * - * Scan a PCI bus and child buses for new devices, adds them, - * and enables them. + * Scan a PCI bus and child buses for new devices, add them, + * and enable them. * * Returns the max number of subordinate bus discovered. */ @@ -2874,7 +2972,7 @@ int pci_hp_add_bridge(struct pci_dev *dev) break; } if (busnr-- > end) { - dev_err(&dev->dev, "No bus number available for hot-added bridge\n"); + pci_err(dev, "No bus number available for hot-added bridge\n"); return -1; } diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 10684b17d0bd..fc734014206f 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -19,7 +19,6 @@ #include <linux/init.h> #include <linux/delay.h> #include <linux/acpi.h> -#include <linux/kallsyms.h> #include <linux/dmi.h> #include <linux/pci-aspm.h> #include <linux/ioport.h> @@ -66,7 +65,7 @@ static void quirk_passive_release(struct pci_dev *dev) while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) { pci_read_config_byte(d, 0x82, &dlc); if (!(dlc & 1<<1)) { - dev_info(&d->dev, "PIIX3: Enabling Passive Release\n"); + pci_info(d, "PIIX3: Enabling Passive Release\n"); dlc |= 1<<1; pci_write_config_byte(d, 0x82, dlc); } @@ -86,7 +85,7 @@ static void quirk_isa_dma_hangs(struct pci_dev *dev) { if (!isa_dma_bridge_buggy) { isa_dma_bridge_buggy = 1; - dev_info(&dev->dev, "Activating ISA DMA hang workarounds\n"); + pci_info(dev, "Activating ISA DMA hang workarounds\n"); } } /* @@ -115,7 +114,7 @@ static void quirk_tigerpoint_bm_sts(struct pci_dev *dev) pm1a = inw(pmbase); if (pm1a & 0x10) { - dev_info(&dev->dev, FW_BUG "TigerPoint LPC.BM_STS cleared\n"); + pci_info(dev, FW_BUG "TigerPoint LPC.BM_STS cleared\n"); outw(0x10, pmbase); } } @@ -127,7 +126,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TGP_LPC, quirk static void quirk_nopcipci(struct pci_dev *dev) { if ((pci_pci_problems & PCIPCI_FAIL) == 0) { - dev_info(&dev->dev, "Disabling direct PCI/PCI transfers\n"); + pci_info(dev, "Disabling direct PCI/PCI transfers\n"); pci_pci_problems |= PCIPCI_FAIL; } } @@ -140,7 +139,7 @@ static void quirk_nopciamd(struct pci_dev *dev) pci_read_config_byte(dev, 0x08, &rev); if (rev == 0x13) { /* Erratum 24 */ - dev_info(&dev->dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n"); + pci_info(dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n"); pci_pci_problems |= PCIAGP_FAIL; } } @@ -152,7 +151,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopci static void quirk_triton(struct pci_dev *dev) { if ((pci_pci_problems&PCIPCI_TRITON) == 0) { - dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); + pci_info(dev, "Limiting direct PCI/PCI transfers\n"); pci_pci_problems |= PCIPCI_TRITON; } } @@ -212,7 +211,7 @@ static void quirk_vialatency(struct pci_dev *dev) busarb &= ~(1<<5); busarb |= (1<<4); pci_write_config_byte(dev, 0x76, busarb); - dev_info(&dev->dev, "Applying VIA southbridge workaround\n"); + pci_info(dev, "Applying VIA southbridge workaround\n"); exit: pci_dev_put(p); } @@ -230,7 +229,7 @@ DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_viala static void quirk_viaetbf(struct pci_dev *dev) { if ((pci_pci_problems&PCIPCI_VIAETBF) == 0) { - dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); + pci_info(dev, "Limiting direct PCI/PCI transfers\n"); pci_pci_problems |= PCIPCI_VIAETBF; } } @@ -239,7 +238,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_via static void quirk_vsfx(struct pci_dev *dev) { if ((pci_pci_problems&PCIPCI_VSFX) == 0) { - dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); + pci_info(dev, "Limiting direct PCI/PCI transfers\n"); pci_pci_problems |= PCIPCI_VSFX; } } @@ -254,7 +253,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx) static void quirk_alimagik(struct pci_dev *dev) { if ((pci_pci_problems&PCIPCI_ALIMAGIK) == 0) { - dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); + pci_info(dev, "Limiting direct PCI/PCI transfers\n"); pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON; } } @@ -268,7 +267,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagi static void quirk_natoma(struct pci_dev *dev) { if ((pci_pci_problems&PCIPCI_NATOMA) == 0) { - dev_info(&dev->dev, "Limiting direct PCI/PCI transfers\n"); + pci_info(dev, "Limiting direct PCI/PCI transfers\n"); pci_pci_problems |= PCIPCI_NATOMA; } } @@ -313,7 +312,7 @@ static void quirk_extend_bar_to_page(struct pci_dev *dev) r->end = PAGE_SIZE - 1; r->start = 0; r->flags |= IORESOURCE_UNSET; - dev_info(&dev->dev, "expanded BAR %d to page size: %pR\n", + pci_info(dev, "expanded BAR %d to page size: %pR\n", i, r); } } @@ -360,7 +359,7 @@ static void quirk_io(struct pci_dev *dev, int pos, unsigned size, bus_region.end = region + size - 1; pcibios_bus_to_resource(dev->bus, res, &bus_region); - dev_info(&dev->dev, FW_BUG "%s quirk: reg 0x%x: %pR\n", + pci_info(dev, FW_BUG "%s quirk: reg 0x%x: %pR\n", name, PCI_BASE_ADDRESS_0 + (pos << 2), res); } @@ -381,7 +380,7 @@ static void quirk_cs5536_vsa(struct pci_dev *dev) quirk_io(dev, 0, 8, name); /* SMB */ quirk_io(dev, 1, 256, name); /* GPIO */ quirk_io(dev, 2, 64, name); /* MFGPT */ - dev_info(&dev->dev, "%s bug detected (incorrect header); workaround applied\n", + pci_info(dev, "%s bug detected (incorrect header); workaround applied\n", name); } } @@ -409,7 +408,7 @@ static void quirk_io_region(struct pci_dev *dev, int port, pcibios_bus_to_resource(dev->bus, res, &bus_region); if (!pci_claim_resource(dev, nr)) - dev_info(&dev->dev, "quirk: %pR claimed by %s\n", res, name); + pci_info(dev, "quirk: %pR claimed by %s\n", res, name); } /* @@ -418,7 +417,7 @@ static void quirk_io_region(struct pci_dev *dev, int port, */ static void quirk_ati_exploding_mce(struct pci_dev *dev) { - dev_info(&dev->dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n"); + pci_info(dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n"); /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */ request_region(0x3b0, 0x0C, "RadeonIGP"); request_region(0x3d3, 0x01, "RadeonIGP"); @@ -441,7 +440,7 @@ static void quirk_amd_nl_class(struct pci_dev *pdev) /* Use "USB Device (not host controller)" class */ pdev->class = PCI_CLASS_SERIAL_USB_DEVICE; - dev_info(&pdev->dev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n", + pci_info(pdev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n", class, pdev->class); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB, @@ -488,8 +487,7 @@ static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int p * let's get enough confirmation reports first. */ base &= -size; - dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, - base + size - 1); + pci_info(dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1); } static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable) @@ -514,8 +512,7 @@ static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int * reserve it, but let's get enough confirmation reports first. */ base &= -size; - dev_info(&dev->dev, "%s MMIO at %04x-%04x\n", name, base, - base + size - 1); + pci_info(dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1); } /* @@ -644,7 +641,7 @@ static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const cha base &= ~(size-1); /* Just print it out for now. We should reserve it after more debugging */ - dev_info(&dev->dev, "%s PIO at %04x-%04x\n", name, base, base+size-1); + pci_info(dev, "%s PIO at %04x-%04x\n", name, base, base+size-1); } static void quirk_ich6_lpc(struct pci_dev *dev) @@ -679,7 +676,7 @@ static void ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const cha mask |= 3; /* Just print it out for now. We should reserve it after more debugging */ - dev_info(&dev->dev, "%s PIO at %04x (mask %04x)\n", name, base, mask); + pci_info(dev, "%s PIO at %04x (mask %04x)\n", name, base, mask); } /* ICH7-10 has the same common LPC generic IO decode registers */ @@ -758,7 +755,7 @@ static void quirk_xio2000a(struct pci_dev *dev) struct pci_dev *pdev; u16 command; - dev_warn(&dev->dev, "TI XIO2000a quirk detected; secondary bus fast back-to-back transfers disabled\n"); + pci_warn(dev, "TI XIO2000a quirk detected; secondary bus fast back-to-back transfers disabled\n"); list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) { pci_read_config_word(pdev, PCI_COMMAND, &command); if (command & PCI_COMMAND_FAST_BACK) @@ -788,7 +785,7 @@ static void quirk_via_ioapic(struct pci_dev *dev) else tmp = 0x1f; /* all known bits (4-0) routed to external APIC */ - dev_info(&dev->dev, "%sbling VIA external APIC routing\n", + pci_info(dev, "%sbling VIA external APIC routing\n", tmp == 0 ? "Disa" : "Ena"); /* Offset 0x58: External APIC IRQ output control */ @@ -810,7 +807,7 @@ static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev) pci_read_config_byte(dev, 0x5B, &misc_control2); if (!(misc_control2 & BYPASS_APIC_DEASSERT)) { - dev_info(&dev->dev, "Bypassing VIA 8237 APIC De-Assert Message\n"); + pci_info(dev, "Bypassing VIA 8237 APIC De-Assert Message\n"); pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT); } } @@ -829,8 +826,8 @@ DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk static void quirk_amd_ioapic(struct pci_dev *dev) { if (dev->revision >= 0x02) { - dev_warn(&dev->dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n"); - dev_warn(&dev->dev, " : booting with the \"noapic\" option\n"); + pci_warn(dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n"); + pci_warn(dev, " : booting with the \"noapic\" option\n"); } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic); @@ -854,7 +851,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CAVIUM, 0xa018, quirk_cavium_sriov_rnm_lin static void quirk_amd_8131_mmrbc(struct pci_dev *dev) { if (dev->subordinate && dev->revision <= 0x12) { - dev_info(&dev->dev, "AMD8131 rev %x detected; disabling PCI-X MMRBC\n", + pci_info(dev, "AMD8131 rev %x detected; disabling PCI-X MMRBC\n", dev->revision); dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC; } @@ -962,7 +959,7 @@ static void quirk_via_vlink(struct pci_dev *dev) pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq); if (new_irq != irq) { - dev_info(&dev->dev, "VIA VLink IRQ fixup, from %d to %d\n", + pci_info(dev, "VIA VLink IRQ fixup, from %d to %d\n", irq, new_irq); udelay(15); /* unknown if delay really needed */ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq); @@ -1011,7 +1008,7 @@ static void quirk_amd_ordering(struct pci_dev *dev) pci_read_config_dword(dev, 0x4C, &pcic); if ((pcic & 6) != 6) { pcic |= 6; - dev_warn(&dev->dev, "BIOS failed to enable PCI standards compliance; fixing this error\n"); + pci_warn(dev, "BIOS failed to enable PCI standards compliance; fixing this error\n"); pci_write_config_dword(dev, 0x4C, pcic); pci_read_config_dword(dev, 0x84, &pcic); pcic |= (1 << 23); /* Required in this mode */ @@ -1064,7 +1061,7 @@ static void quirk_mediagx_master(struct pci_dev *dev) pci_read_config_byte(dev, 0x41, ®); if (reg & 2) { reg &= ~2; - dev_info(&dev->dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", + pci_info(dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", reg); pci_write_config_byte(dev, 0x41, reg); } @@ -1087,7 +1084,7 @@ static void quirk_disable_pxb(struct pci_dev *pdev) if (config & (1<<6)) { config &= ~(1<<6); pci_write_config_word(pdev, 0x40, config); - dev_info(&pdev->dev, "C0 revision 450NX. Disabling PCI restreaming\n"); + pci_info(pdev, "C0 revision 450NX. Disabling PCI restreaming\n"); } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb); @@ -1107,7 +1104,7 @@ static void quirk_amd_ide_mode(struct pci_dev *pdev) pci_write_config_byte(pdev, 0x40, tmp); pdev->class = PCI_CLASS_STORAGE_SATA_AHCI; - dev_info(&pdev->dev, "set SATA to AHCI mode\n"); + pci_info(pdev, "set SATA to AHCI mode\n"); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode); @@ -1145,7 +1142,7 @@ static void quirk_ide_samemode(struct pci_dev *pdev) pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog); if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) { - dev_info(&pdev->dev, "IDE mode mismatch; forcing legacy mode\n"); + pci_info(pdev, "IDE mode mismatch; forcing legacy mode\n"); prog &= ~5; pdev->class &= ~5; pci_write_config_byte(pdev, PCI_CLASS_PROG, prog); @@ -1356,10 +1353,10 @@ static void asus_hides_smbus_lpc(struct pci_dev *dev) pci_write_config_word(dev, 0xF2, val & (~0x8)); pci_read_config_word(dev, 0xF2, &val); if (val & 0x8) - dev_info(&dev->dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n", + pci_info(dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n", val); else - dev_info(&dev->dev, "Enabled i801 SMBus device\n"); + pci_info(dev, "Enabled i801 SMBus device\n"); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc); @@ -1411,7 +1408,7 @@ static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev) return; iounmap(asus_rcba_base); asus_rcba_base = NULL; - dev_info(&dev->dev, "Enabled ICH6/i801 SMBus device\n"); + pci_info(dev, "Enabled ICH6/i801 SMBus device\n"); } static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev) @@ -1433,7 +1430,7 @@ static void quirk_sis_96x_smbus(struct pci_dev *dev) u8 val = 0; pci_read_config_byte(dev, 0x77, &val); if (val & 0x10) { - dev_info(&dev->dev, "Enabling SiS 96x SMBus\n"); + pci_info(dev, "Enabling SiS 96x SMBus\n"); pci_write_config_byte(dev, 0x77, val & ~0x10); } } @@ -1505,10 +1502,10 @@ static void asus_hides_ac97_lpc(struct pci_dev *dev) pci_write_config_byte(dev, 0x50, val & (~0xc0)); pci_read_config_byte(dev, 0x50, &val); if (val & 0xc0) - dev_info(&dev->dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", + pci_info(dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val); else - dev_info(&dev->dev, "Enabled onboard AC97/MC97 devices\n"); + pci_info(dev, "Enabled onboard AC97/MC97 devices\n"); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc); @@ -1599,7 +1596,7 @@ static void quirk_jmicron_async_suspend(struct pci_dev *dev) { if (dev->multifunction) { device_disable_async_suspend(&dev->dev); - dev_info(&dev->dev, "async suspend disabled to avoid multi-function power-on ordering issue\n"); + pci_info(dev, "async suspend disabled to avoid multi-function power-on ordering issue\n"); } } DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE, 8, quirk_jmicron_async_suspend); @@ -1636,8 +1633,8 @@ static void quirk_pcie_mch(struct pci_dev *pdev) DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch); -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0x1610, quirk_pcie_mch); +DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_HUAWEI, 0x1610, PCI_CLASS_BRIDGE_PCI, 8, quirk_pcie_mch); /* * It's possible for the MSI to get corrupted if shpc and acpi @@ -1646,7 +1643,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0x1610, quirk_pcie_mch); static void quirk_pcie_pxh(struct pci_dev *dev) { dev->no_msi = 1; - dev_warn(&dev->dev, "PXH quirk detected; SHPC device MSI disabled\n"); + pci_warn(dev, "PXH quirk detected; SHPC device MSI disabled\n"); } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh); @@ -1692,7 +1689,7 @@ static void quirk_radeon_pm(struct pci_dev *dev) dev->subsystem_device == 0x00e2) { if (dev->d3_delay < 20) { dev->d3_delay = 20; - dev_info(&dev->dev, "extending delay after power-on from D3 to %d msec\n", + pci_info(dev, "extending delay after power-on from D3 to %d msec\n", dev->d3_delay); } } @@ -1736,7 +1733,7 @@ static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev) return; dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT; - dev_info(&dev->dev, "rerouting interrupts for [%04x:%04x]\n", + pci_info(dev, "rerouting interrupts for [%04x:%04x]\n", dev->vendor, dev->device); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel); @@ -1779,7 +1776,7 @@ static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev) pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ; pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, pci_config_word); - dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n", + pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n", dev->vendor, dev->device); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt); @@ -1812,7 +1809,7 @@ static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev) pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword); - dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n", + pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n", dev->vendor, dev->device); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt); @@ -1845,7 +1842,7 @@ static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev) pci_config_dword &= ~AMD_813X_NOIOAMODE; pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword); - dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n", + pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n", dev->vendor, dev->device); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt); @@ -1864,12 +1861,12 @@ static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev) pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word); if (!pci_config_word) { - dev_info(&dev->dev, "boot interrupts on device [%04x:%04x] already disabled\n", + pci_info(dev, "boot interrupts on device [%04x:%04x] already disabled\n", dev->vendor, dev->device); return; } pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0); - dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n", + pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n", dev->vendor, dev->device); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt); @@ -1913,7 +1910,7 @@ static void quirk_plx_pci9050(struct pci_dev *dev) if (pci_resource_len(dev, bar) == 0x80 && (pci_resource_start(dev, bar) & 0x80)) { struct resource *r = &dev->resource[bar]; - dev_info(&dev->dev, "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n", + pci_info(dev, "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n", bar); r->flags |= IORESOURCE_UNSET; r->start = 0; @@ -1960,7 +1957,7 @@ static void quirk_netmos(struct pci_dev *dev) case PCI_DEVICE_ID_NETMOS_9845: case PCI_DEVICE_ID_NETMOS_9855: if (num_parallel) { - dev_info(&dev->dev, "Netmos %04x (%u parallel, %u serial); changing class SERIAL to OTHER (use parport_serial)\n", + pci_info(dev, "Netmos %04x (%u parallel, %u serial); changing class SERIAL to OTHER (use parport_serial)\n", dev->device, num_parallel, num_serial); dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) | (dev->class & 0xff); @@ -2046,13 +2043,13 @@ static void quirk_e100_interrupt(struct pci_dev *dev) /* Convert from PCI bus to resource space. */ csr = ioremap(pci_resource_start(dev, 0), 8); if (!csr) { - dev_warn(&dev->dev, "Can't map e100 registers\n"); + pci_warn(dev, "Can't map e100 registers\n"); return; } cmd_hi = readb(csr + 3); if (cmd_hi == 0) { - dev_warn(&dev->dev, "Firmware left e100 interrupts enabled; disabling\n"); + pci_warn(dev, "Firmware left e100 interrupts enabled; disabling\n"); writeb(1, csr + 3); } @@ -2067,7 +2064,7 @@ DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, */ static void quirk_disable_aspm_l0s(struct pci_dev *dev) { - dev_info(&dev->dev, "Disabling L0s\n"); + pci_info(dev, "Disabling L0s\n"); pci_disable_link_state(dev, PCIE_LINK_STATE_L0S); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s); @@ -2097,7 +2094,7 @@ static void fixup_rev1_53c810(struct pci_dev *dev) return; dev->class = PCI_CLASS_STORAGE_SCSI << 8; - dev_info(&dev->dev, "NCR 53c810 rev 1 PCI class overridden (%#08x -> %#08x)\n", + pci_info(dev, "NCR 53c810 rev 1 PCI class overridden (%#08x -> %#08x)\n", class, dev->class); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810); @@ -2110,7 +2107,7 @@ static void quirk_p64h2_1k_io(struct pci_dev *dev) pci_read_config_word(dev, 0x40, &en1k); if (en1k & 0x200) { - dev_info(&dev->dev, "Enable I/O Space to 1KB granularity\n"); + pci_info(dev, "Enable I/O Space to 1KB granularity\n"); dev->io_window_1k = 1; } } @@ -2126,7 +2123,7 @@ static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev) if (pci_read_config_byte(dev, 0xf41, &b) == 0) { if (!(b & 0x20)) { pci_write_config_byte(dev, 0xf41, b | 0x20); - dev_info(&dev->dev, "Linking AER extended capability\n"); + pci_info(dev, "Linking AER extended capability\n"); } } } @@ -2164,7 +2161,7 @@ static void quirk_via_cx700_pci_parking_caching(struct pci_dev *dev) /* Turn off PCI Bus Parking */ pci_write_config_byte(dev, 0x76, b ^ 0x40); - dev_info(&dev->dev, "Disabling VIA CX700 PCI parking\n"); + pci_info(dev, "Disabling VIA CX700 PCI parking\n"); } } @@ -2179,7 +2176,7 @@ static void quirk_via_cx700_pci_parking_caching(struct pci_dev *dev) /* Disable "Read FIFO Timer" */ pci_write_config_byte(dev, 0x77, 0x0); - dev_info(&dev->dev, "Disabling VIA CX700 PCI caching\n"); + pci_info(dev, "Disabling VIA CX700 PCI caching\n"); } } } @@ -2196,7 +2193,7 @@ static void quirk_blacklist_vpd(struct pci_dev *dev) { if (dev->vpd) { dev->vpd->len = 0; - dev_warn(&dev->dev, FW_BUG "disabling VPD access (can't determine size of non-standard VPD format)\n"); + pci_warn(dev, FW_BUG "disabling VPD access (can't determine size of non-standard VPD format)\n"); } } @@ -2312,7 +2309,7 @@ static void quirk_unhide_mch_dev6(struct pci_dev *dev) u8 reg; if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) { - dev_info(&dev->dev, "Enabling MCH 'Overflow' Device\n"); + pci_info(dev, "Enabling MCH 'Overflow' Device\n"); pci_write_config_byte(dev, 0xF4, reg | 0x02); } } @@ -2351,7 +2348,7 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8624, quirk_tile_plx_gen1); static void quirk_disable_all_msi(struct pci_dev *dev) { pci_no_msi(); - dev_warn(&dev->dev, "MSI quirk detected; MSI disabled\n"); + pci_warn(dev, "MSI quirk detected; MSI disabled\n"); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi); @@ -2366,7 +2363,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, 0x0761, quirk_disable_all_msi); static void quirk_disable_msi(struct pci_dev *dev) { if (dev->subordinate) { - dev_warn(&dev->dev, "MSI quirk detected; subordinate MSI disabled\n"); + pci_warn(dev, "MSI quirk detected; subordinate MSI disabled\n"); dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; } } @@ -2406,7 +2403,7 @@ static int msi_ht_cap_enabled(struct pci_dev *dev) if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, &flags) == 0) { - dev_info(&dev->dev, "Found %s HT MSI Mapping\n", + pci_info(dev, "Found %s HT MSI Mapping\n", flags & HT_MSI_FLAGS_ENABLE ? "enabled" : "disabled"); return (flags & HT_MSI_FLAGS_ENABLE) != 0; @@ -2422,7 +2419,7 @@ static int msi_ht_cap_enabled(struct pci_dev *dev) static void quirk_msi_ht_cap(struct pci_dev *dev) { if (dev->subordinate && !msi_ht_cap_enabled(dev)) { - dev_warn(&dev->dev, "MSI quirk detected; subordinate MSI disabled\n"); + pci_warn(dev, "MSI quirk detected; subordinate MSI disabled\n"); dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; } } @@ -2446,7 +2443,7 @@ static void quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev) if (!pdev) return; if (!msi_ht_cap_enabled(dev) && !msi_ht_cap_enabled(pdev)) { - dev_warn(&dev->dev, "MSI quirk detected; subordinate MSI disabled\n"); + pci_warn(dev, "MSI quirk detected; subordinate MSI disabled\n"); dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; } pci_dev_put(pdev); @@ -2465,7 +2462,7 @@ static void ht_enable_msi_mapping(struct pci_dev *dev) if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, &flags) == 0) { - dev_info(&dev->dev, "Enabling HT MSI Mapping\n"); + pci_info(dev, "Enabling HT MSI Mapping\n"); pci_write_config_byte(dev, pos + HT_MSI_FLAGS, flags | HT_MSI_FLAGS_ENABLE); @@ -2492,7 +2489,7 @@ static void nvenet_msi_disable(struct pci_dev *dev) if (board_name && (strstr(board_name, "P5N32-SLI PREMIUM") || strstr(board_name, "P5N32-E SLI"))) { - dev_info(&dev->dev, "Disabling msi for MCP55 NIC on P5N32-SLI\n"); + pci_info(dev, "Disabling MSI for MCP55 NIC on P5N32-SLI\n"); dev->no_msi = 1; } } @@ -2669,7 +2666,7 @@ static void ht_disable_msi_mapping(struct pci_dev *dev) if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, &flags) == 0) { - dev_info(&dev->dev, "Disabling HT MSI Mapping\n"); + pci_info(dev, "Disabling HT MSI Mapping\n"); pci_write_config_byte(dev, pos + HT_MSI_FLAGS, flags & ~HT_MSI_FLAGS_ENABLE); @@ -2699,9 +2696,10 @@ static void __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all) * HT MSI mapping should be disabled on devices that are below * a non-Hypertransport host bridge. Locate the host bridge... */ - host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0)); + host_bridge = pci_get_domain_bus_and_slot(pci_domain_nr(dev->bus), 0, + PCI_DEVFN(0, 0)); if (host_bridge == NULL) { - dev_warn(&dev->dev, "nv_msi_ht_cap_quirk didn't locate host bridge\n"); + pci_warn(dev, "nv_msi_ht_cap_quirk didn't locate host bridge\n"); return; } @@ -2770,7 +2768,7 @@ static void quirk_msi_intx_disable_qca_bug(struct pci_dev *dev) { /* AR816X/AR817X/E210X MSI is fixed at HW level from revision 0x18 */ if (dev->revision < 0x18) { - dev_info(&dev->dev, "set MSI_INTX_DISABLE_BUG flag\n"); + pci_info(dev, "set MSI_INTX_DISABLE_BUG flag\n"); dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG; } } @@ -2899,8 +2897,8 @@ static void ricoh_mmc_fixup_rl5c476(struct pci_dev *dev) pci_write_config_byte(dev, 0x8E, write_enable); pci_write_config_byte(dev, 0x8D, write_target); - dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via cardbus function)\n"); - dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n"); + pci_notice(dev, "proprietary Ricoh MMC controller disabled (via cardbus function)\n"); + pci_notice(dev, "MMC cards are now supported by standard SDHCI controller\n"); } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476); @@ -2935,7 +2933,7 @@ static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev) pci_write_config_byte(dev, 0xe1, 0x32); pci_write_config_byte(dev, 0xfc, 0x00); - dev_notice(&dev->dev, "MMC controller base frequency changed to 50Mhz.\n"); + pci_notice(dev, "MMC controller base frequency changed to 50Mhz.\n"); } pci_read_config_byte(dev, 0xCB, &disable); @@ -2948,8 +2946,8 @@ static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev) pci_write_config_byte(dev, 0xCB, disable | 0x02); pci_write_config_byte(dev, 0xCA, write_enable); - dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via firewire function)\n"); - dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n"); + pci_notice(dev, "proprietary Ricoh MMC controller disabled (via firewire function)\n"); + pci_notice(dev, "MMC cards are now supported by standard SDHCI controller\n"); } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832); @@ -2990,7 +2988,7 @@ static void fixup_ti816x_class(struct pci_dev *dev) /* TI 816x devices do not have class code set when in PCIe boot mode */ dev->class = PCI_CLASS_MULTIMEDIA_VIDEO << 8; - dev_info(&dev->dev, "PCI class overridden (%#08x -> %#08x)\n", + pci_info(dev, "PCI class overridden (%#08x -> %#08x)\n", class, dev->class); } DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800, @@ -3032,7 +3030,7 @@ static void quirk_intel_mc_errata(struct pci_dev *dev) */ err = pci_read_config_word(dev, 0x48, &rcc); if (err) { - dev_err(&dev->dev, "Error attempting to read the read completion coalescing register\n"); + pci_err(dev, "Error attempting to read the read completion coalescing register\n"); return; } @@ -3043,7 +3041,7 @@ static void quirk_intel_mc_errata(struct pci_dev *dev) err = pci_write_config_word(dev, 0x48, rcc); if (err) { - dev_err(&dev->dev, "Error attempting to write the read completion coalescing register\n"); + pci_err(dev, "Error attempting to write the read completion coalescing register\n"); return; } @@ -3108,7 +3106,7 @@ static ktime_t fixup_debug_start(struct pci_dev *dev, { ktime_t calltime = 0; - dev_dbg(&dev->dev, "calling %pF\n", fn); + pci_dbg(dev, "calling %pF\n", fn); if (initcall_debug) { pr_debug("calling %pF @ %i for %s\n", fn, task_pid_nr(current), dev_name(&dev->dev)); @@ -3150,13 +3148,13 @@ static void disable_igfx_irq(struct pci_dev *dev) { void __iomem *regs = pci_iomap(dev, 0, 0); if (regs == NULL) { - dev_warn(&dev->dev, "igfx quirk: Can't iomap PCI device\n"); + pci_warn(dev, "igfx quirk: Can't iomap PCI device\n"); return; } /* Check if any interrupt line is still enabled */ if (readl(regs + I915_DEIER_REG) != 0) { - dev_warn(&dev->dev, "BIOS left Intel GPU interrupts enabled; disabling\n"); + pci_warn(dev, "BIOS left Intel GPU interrupts enabled; disabling\n"); writel(0, regs + I915_DEIER_REG); } @@ -3215,6 +3213,8 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x0030, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */ quirk_broken_intx_masking); +DECLARE_PCI_FIXUP_FINAL(0x1b7c, 0x0004, /* Ceton InfiniTV4 */ + quirk_broken_intx_masking); /* * Realtek RTL8169 PCI Gigabit Ethernet Controller (rev 10) @@ -3317,13 +3317,13 @@ static void mellanox_check_broken_intx_masking(struct pci_dev *pdev) /* For ConnectX-4 and ConnectX-4LX, need to check FW support */ if (pci_enable_device_mem(pdev)) { - dev_warn(&pdev->dev, "Can't enable device memory\n"); + pci_warn(pdev, "Can't enable device memory\n"); return; } fw_ver = ioremap(pci_resource_start(pdev, 0), 4); if (!fw_ver) { - dev_warn(&pdev->dev, "Can't map ConnectX-4 initialization segment\n"); + pci_warn(pdev, "Can't map ConnectX-4 initialization segment\n"); goto out; } @@ -3335,7 +3335,7 @@ static void mellanox_check_broken_intx_masking(struct pci_dev *pdev) fw_subminor = fw_sub_min & 0xffff; if (fw_minor > CONNECTX_4_CURR_MAX_MINOR || fw_minor < CONNECTX_4_INTX_SUPPORT_MINOR) { - dev_warn(&pdev->dev, "ConnectX-4: FW %u.%u.%u doesn't support INTx masking, disabling. Please upgrade FW to %d.14.1100 and up for INTx support\n", + pci_warn(pdev, "ConnectX-4: FW %u.%u.%u doesn't support INTx masking, disabling. Please upgrade FW to %d.14.1100 and up for INTx support\n", fw_major, fw_minor, fw_subminor, pdev->device == PCI_DEVICE_ID_MELLANOX_CONNECTX4 ? 12 : 14); pdev->broken_intx_masking = 1; @@ -3473,7 +3473,7 @@ static void quirk_apple_poweroff_thunderbolt(struct pci_dev *dev) || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXFP", &SXFP)) || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXLV", &SXLV))) return; - dev_info(&dev->dev, "quirk: cutting power to thunderbolt controller...\n"); + pci_info(dev, "quirk: cutting power to thunderbolt controller...\n"); /* magic sequence */ acpi_execute_simple_method(SXIO, NULL, 1); @@ -3524,7 +3524,7 @@ static void quirk_apple_wait_for_thunderbolt(struct pci_dev *dev) nhi->device != PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_NHI) || nhi->class != PCI_CLASS_SYSTEM_OTHER << 8) goto out; - dev_info(&dev->dev, "quirk: waiting for thunderbolt to reestablish PCI tunnels...\n"); + pci_info(dev, "quirk: waiting for thunderbolt to reestablish PCI tunnels...\n"); device_pm_wait_for_dev(&dev->dev, &nhi->dev); out: pci_dev_put(nhi); @@ -3740,7 +3740,7 @@ static int reset_ivb_igd(struct pci_dev *dev, int probe) goto reset_complete; msleep(10); } while (time_before(jiffies, timeout)); - dev_warn(&dev->dev, "timeout during reset\n"); + pci_warn(dev, "timeout during reset\n"); reset_complete: iowrite32(0x00000002, mmio_base + NSDE_PWR_STATE); @@ -3879,6 +3879,8 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9120, quirk_dma_func1_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123, quirk_dma_func1_alias); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9128, + quirk_dma_func1_alias); /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9130, quirk_dma_func1_alias); @@ -4012,7 +4014,7 @@ static void quirk_tw686x_class(struct pci_dev *pdev) /* Use "Multimedia controller" class */ pdev->class = (PCI_CLASS_MULTIMEDIA_OTHER << 8) | 0x01; - dev_info(&pdev->dev, "TW686x PCI class overridden (%#08x -> %#08x)\n", + pci_info(pdev, "TW686x PCI class overridden (%#08x -> %#08x)\n", class, pdev->class); } DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6864, PCI_CLASS_NOT_DEFINED, 8, @@ -4032,7 +4034,7 @@ DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6869, PCI_CLASS_NOT_DEFINED, 8, static void quirk_relaxedordering_disable(struct pci_dev *dev) { dev->dev_flags |= PCI_DEV_FLAGS_NO_RELAXED_ORDERING; - dev_info(&dev->dev, "Disable Relaxed Ordering Attributes to avoid PCIe Completion erratum\n"); + pci_info(dev, "Disable Relaxed Ordering Attributes to avoid PCIe Completion erratum\n"); } /* @@ -4141,11 +4143,11 @@ static void quirk_disable_root_port_attributes(struct pci_dev *pdev) struct pci_dev *root_port = pci_find_pcie_root_port(pdev); if (!root_port) { - dev_warn(&pdev->dev, "PCIe Completion erratum may cause device errors\n"); + pci_warn(pdev, "PCIe Completion erratum may cause device errors\n"); return; } - dev_info(&root_port->dev, "Disabling No Snoop/Relaxed Ordering Attributes to avoid PCIe Completion erratum in %s\n", + pci_info(root_port, "Disabling No Snoop/Relaxed Ordering Attributes to avoid PCIe Completion erratum in %s\n", dev_name(&pdev->dev)); pcie_capability_clear_and_set_word(root_port, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_RELAX_EN | @@ -4339,7 +4341,7 @@ static int pci_quirk_qcom_rp_acs(struct pci_dev *dev, u16 acs_flags) u16 flags = (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_SV); int ret = acs_flags & ~flags ? 0 : 1; - dev_info(&dev->dev, "Using QCOM ACS Quirk (%d)\n", ret); + pci_info(dev, "Using QCOM ACS Quirk (%d)\n", ret); return ret; } @@ -4591,7 +4593,7 @@ static int pci_quirk_enable_intel_lpc_acs(struct pci_dev *dev) if (bspr != (INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD)) { updcr = readl(rcba_mem + INTEL_UPDCR_REG); if (updcr & INTEL_UPDCR_REG_MASK) { - dev_info(&dev->dev, "Disabling UPDCR peer decodes\n"); + pci_info(dev, "Disabling UPDCR peer decodes\n"); updcr &= ~INTEL_UPDCR_REG_MASK; writel(updcr, rcba_mem + INTEL_UPDCR_REG); } @@ -4618,7 +4620,7 @@ static void pci_quirk_enable_intel_rp_mpc_acs(struct pci_dev *dev) */ pci_read_config_dword(dev, INTEL_MPC_REG, &mpc); if (!(mpc & INTEL_MPC_REG_IRBNCE)) { - dev_info(&dev->dev, "Enabling MPC IRBNCE\n"); + pci_info(dev, "Enabling MPC IRBNCE\n"); mpc |= INTEL_MPC_REG_IRBNCE; pci_write_config_word(dev, INTEL_MPC_REG, mpc); } @@ -4630,7 +4632,7 @@ static int pci_quirk_enable_intel_pch_acs(struct pci_dev *dev) return -ENOTTY; if (pci_quirk_enable_intel_lpc_acs(dev)) { - dev_warn(&dev->dev, "Failed to enable Intel PCH ACS quirk\n"); + pci_warn(dev, "Failed to enable Intel PCH ACS quirk\n"); return 0; } @@ -4638,7 +4640,7 @@ static int pci_quirk_enable_intel_pch_acs(struct pci_dev *dev) dev->dev_flags |= PCI_DEV_FLAGS_ACS_ENABLED_QUIRK; - dev_info(&dev->dev, "Intel PCH root port ACS workaround enabled\n"); + pci_info(dev, "Intel PCH root port ACS workaround enabled\n"); return 0; } @@ -4665,7 +4667,7 @@ static int pci_quirk_enable_intel_spt_pch_acs(struct pci_dev *dev) pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl); - dev_info(&dev->dev, "Intel SPT PCH root port ACS workaround enabled\n"); + pci_info(dev, "Intel SPT PCH root port ACS workaround enabled\n"); return 0; } @@ -4800,7 +4802,7 @@ static void quirk_no_ext_tags(struct pci_dev *pdev) return; bridge->no_ext_tags = 1; - dev_info(&pdev->dev, "disabling Extended Tags (this device can't handle them)\n"); + pci_info(pdev, "disabling Extended Tags (this device can't handle them)\n"); pci_walk_bus(bridge->bus, pci_configure_extended_tags, NULL); } @@ -4815,7 +4817,7 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0144, quirk_no_ext_tags); */ static void quirk_no_ats(struct pci_dev *pdev) { - dev_info(&pdev->dev, "disabling ATS (broken on this device)\n"); + pci_info(pdev, "disabling ATS (broken on this device)\n"); pdev->ats_cap = 0; } diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c index 2fa0dbde36b7..6f072eae4f7a 100644 --- a/drivers/pci/remove.c +++ b/drivers/pci/remove.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 #include <linux/pci.h> #include <linux/module.h> #include <linux/pci-aspm.h> diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c index 1f5e6af96c83..374a33443be9 100644 --- a/drivers/pci/rom.c +++ b/drivers/pci/rom.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * drivers/pci/rom.c * @@ -92,15 +93,15 @@ size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size) void __iomem *pds; /* Standard PCI ROMs start out with these bytes 55 AA */ if (readw(image) != 0xAA55) { - dev_err(&pdev->dev, "Invalid PCI ROM header signature: expecting 0xaa55, got %#06x\n", - readw(image)); + pci_info(pdev, "Invalid PCI ROM header signature: expecting 0xaa55, got %#06x\n", + readw(image)); break; } /* get the PCI data structure and check its "PCIR" signature */ pds = image + readw(image + 24); if (readl(pds) != 0x52494350) { - dev_err(&pdev->dev, "Invalid PCI ROM data signature: expecting 0x52494350, got %#010x\n", - readl(pds)); + pci_info(pdev, "Invalid PCI ROM data signature: expecting 0x52494350, got %#010x\n", + readl(pds)); break; } last_image = readb(pds + 21) & 0x80; diff --git a/drivers/pci/search.c b/drivers/pci/search.c index 4c6044ad7368..bc1e023f1353 100644 --- a/drivers/pci/search.c +++ b/drivers/pci/search.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCI searching functions. * diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index b1ad466199ad..3cce29a069e6 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * drivers/pci/setup-bus.c * @@ -67,10 +68,8 @@ static int add_to_list(struct list_head *head, struct pci_dev_resource *tmp; tmp = kzalloc(sizeof(*tmp), GFP_KERNEL); - if (!tmp) { - pr_warn("add_to_list: kmalloc() failed!\n"); + if (!tmp) return -ENOMEM; - } tmp->res = res; tmp->dev = dev; @@ -152,7 +151,7 @@ static void pdev_sort_resources(struct pci_dev *dev, struct list_head *head) r_align = pci_resource_alignment(dev, r); if (!r_align) { - dev_warn(&dev->dev, "BAR %d: %pR has bogus alignment\n", + pci_warn(dev, "BAR %d: %pR has bogus alignment\n", i, r); continue; } @@ -260,7 +259,7 @@ static void reassign_resources_sorted(struct list_head *realloc_head, (IORESOURCE_STARTALIGN|IORESOURCE_SIZEALIGN); if (pci_reassign_resource(add_res->dev, idx, add_size, align)) - dev_printk(KERN_DEBUG, &add_res->dev->dev, + pci_printk(KERN_DEBUG, add_res->dev, "failed to add %llx res[%d]=%pR\n", (unsigned long long)add_size, idx, res); @@ -519,7 +518,7 @@ void pci_setup_cardbus(struct pci_bus *bus) struct resource *res; struct pci_bus_region region; - dev_info(&bridge->dev, "CardBus bridge to %pR\n", + pci_info(bridge, "CardBus bridge to %pR\n", &bus->busn_res); res = bus->resource[0]; @@ -529,7 +528,7 @@ void pci_setup_cardbus(struct pci_bus *bus) * The IO resource is allocated a range twice as large as it * would normally need. This allows us to set both IO regs. */ - dev_info(&bridge->dev, " bridge window %pR\n", res); + pci_info(bridge, " bridge window %pR\n", res); pci_write_config_dword(bridge, PCI_CB_IO_BASE_0, region.start); pci_write_config_dword(bridge, PCI_CB_IO_LIMIT_0, @@ -539,7 +538,7 @@ void pci_setup_cardbus(struct pci_bus *bus) res = bus->resource[1]; pcibios_resource_to_bus(bridge->bus, ®ion, res); if (res->flags & IORESOURCE_IO) { - dev_info(&bridge->dev, " bridge window %pR\n", res); + pci_info(bridge, " bridge window %pR\n", res); pci_write_config_dword(bridge, PCI_CB_IO_BASE_1, region.start); pci_write_config_dword(bridge, PCI_CB_IO_LIMIT_1, @@ -549,7 +548,7 @@ void pci_setup_cardbus(struct pci_bus *bus) res = bus->resource[2]; pcibios_resource_to_bus(bridge->bus, ®ion, res); if (res->flags & IORESOURCE_MEM) { - dev_info(&bridge->dev, " bridge window %pR\n", res); + pci_info(bridge, " bridge window %pR\n", res); pci_write_config_dword(bridge, PCI_CB_MEMORY_BASE_0, region.start); pci_write_config_dword(bridge, PCI_CB_MEMORY_LIMIT_0, @@ -559,7 +558,7 @@ void pci_setup_cardbus(struct pci_bus *bus) res = bus->resource[3]; pcibios_resource_to_bus(bridge->bus, ®ion, res); if (res->flags & IORESOURCE_MEM) { - dev_info(&bridge->dev, " bridge window %pR\n", res); + pci_info(bridge, " bridge window %pR\n", res); pci_write_config_dword(bridge, PCI_CB_MEMORY_BASE_1, region.start); pci_write_config_dword(bridge, PCI_CB_MEMORY_LIMIT_1, @@ -602,7 +601,7 @@ static void pci_setup_bridge_io(struct pci_dev *bridge) l = ((u16) io_limit_lo << 8) | io_base_lo; /* Set up upper 16 bits of I/O base/limit. */ io_upper16 = (region.end & 0xffff0000) | (region.start >> 16); - dev_info(&bridge->dev, " bridge window %pR\n", res); + pci_info(bridge, " bridge window %pR\n", res); } else { /* Clear upper 16 bits of I/O base/limit. */ io_upper16 = 0; @@ -628,7 +627,7 @@ static void pci_setup_bridge_mmio(struct pci_dev *bridge) if (res->flags & IORESOURCE_MEM) { l = (region.start >> 16) & 0xfff0; l |= region.end & 0xfff00000; - dev_info(&bridge->dev, " bridge window %pR\n", res); + pci_info(bridge, " bridge window %pR\n", res); } else { l = 0x0000fff0; } @@ -657,7 +656,7 @@ static void pci_setup_bridge_mmio_pref(struct pci_dev *bridge) bu = upper_32_bits(region.start); lu = upper_32_bits(region.end); } - dev_info(&bridge->dev, " bridge window %pR\n", res); + pci_info(bridge, " bridge window %pR\n", res); } else { l = 0x0000fff0; } @@ -672,7 +671,7 @@ static void __pci_setup_bridge(struct pci_bus *bus, unsigned long type) { struct pci_dev *bridge = bus->self; - dev_info(&bridge->dev, "PCI bridge to %pR\n", + pci_info(bridge, "PCI bridge to %pR\n", &bus->busn_res); if (type & IORESOURCE_IO) @@ -944,7 +943,7 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size, resource_size(b_res), min_align); if (!size0 && !size1) { if (b_res->start || b_res->end) - dev_info(&bus->self->dev, "disabling bridge window %pR to %pR (unused)\n", + pci_info(bus->self, "disabling bridge window %pR to %pR (unused)\n", b_res, &bus->busn_res); b_res->flags = 0; return; @@ -956,7 +955,7 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size, if (size1 > size0 && realloc_head) { add_to_list(realloc_head, bus->self, b_res, size1-size0, min_align); - dev_printk(KERN_DEBUG, &bus->self->dev, "bridge window %pR to %pR add_size %llx\n", + pci_printk(KERN_DEBUG, bus->self, "bridge window %pR to %pR add_size %llx\n", b_res, &bus->busn_res, (unsigned long long)size1-size0); } @@ -1061,7 +1060,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, if (order < 0) order = 0; if (order >= ARRAY_SIZE(aligns)) { - dev_warn(&dev->dev, "disabling BAR %d: %pR (bad alignment %#llx)\n", + pci_warn(dev, "disabling BAR %d: %pR (bad alignment %#llx)\n", i, r, (unsigned long long) align); r->flags = 0; continue; @@ -1093,7 +1092,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, resource_size(b_res), add_align); if (!size0 && !size1) { if (b_res->start || b_res->end) - dev_info(&bus->self->dev, "disabling bridge window %pR to %pR (unused)\n", + pci_info(bus->self, "disabling bridge window %pR to %pR (unused)\n", b_res, &bus->busn_res); b_res->flags = 0; return 0; @@ -1103,7 +1102,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, b_res->flags |= IORESOURCE_STARTALIGN; if (size1 > size0 && realloc_head) { add_to_list(realloc_head, bus->self, b_res, size1-size0, add_align); - dev_printk(KERN_DEBUG, &bus->self->dev, "bridge window %pR to %pR add_size %llx add_align %llx\n", + pci_printk(KERN_DEBUG, bus->self, "bridge window %pR to %pR add_size %llx add_align %llx\n", b_res, &bus->busn_res, (unsigned long long) (size1 - size0), (unsigned long long) add_align); @@ -1407,7 +1406,7 @@ void __pci_bus_assign_resources(const struct pci_bus *bus, break; default: - dev_info(&dev->dev, "not setting up bridge for bus %04x:%02x\n", + pci_info(dev, "not setting up bridge for bus %04x:%02x\n", pci_domain_nr(b), b->number); break; } @@ -1513,7 +1512,7 @@ static void __pci_bridge_assign_resources(const struct pci_dev *bridge, break; default: - dev_info(&bridge->dev, "not setting up bridge for bus %04x:%02x\n", + pci_info(bridge, "not setting up bridge for bus %04x:%02x\n", pci_domain_nr(b), b->number); break; } @@ -1571,7 +1570,7 @@ static void pci_bridge_release_resources(struct pci_bus *bus, release_child_resources(r); if (!release_resource(r)) { type = old_flags = r->flags & PCI_RES_TYPE_MASK; - dev_printk(KERN_DEBUG, &dev->dev, "resource %d %pR released\n", + pci_printk(KERN_DEBUG, dev, "resource %d %pR released\n", PCI_BRIDGE_RESOURCES + idx, r); /* keep the old size */ r->end = resource_size(r) - 1; @@ -1874,7 +1873,7 @@ static void extend_bridge_window(struct pci_dev *bridge, struct resource *res, return; dev_res->add_size = available - resource_size(res); - dev_dbg(&bridge->dev, "bridge window %pR extended by %pa\n", res, + pci_dbg(bridge, "bridge window %pR extended by %pa\n", res, &dev_res->add_size); } @@ -2085,7 +2084,7 @@ again: enable_all: retval = pci_reenable_device(bridge); if (retval) - dev_err(&bridge->dev, "Error reenabling bridge (%d)\n", retval); + pci_err(bridge, "Error reenabling bridge (%d)\n", retval); pci_set_master(bridge); } EXPORT_SYMBOL_GPL(pci_assign_unassigned_bridge_resources); @@ -2119,7 +2118,7 @@ int pci_reassign_bridge_resources(struct pci_dev *bridge, unsigned long type) if (ret) goto cleanup; - dev_info(&bridge->dev, "BAR %d: releasing %pR\n", + pci_info(bridge, "BAR %d: releasing %pR\n", i, res); if (res->parent) diff --git a/drivers/pci/setup-irq.c b/drivers/pci/setup-irq.c index 86106c44ce94..5ad4ee7d7b1e 100644 --- a/drivers/pci/setup-irq.c +++ b/drivers/pci/setup-irq.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * drivers/pci/setup-irq.c * @@ -25,7 +26,7 @@ void pci_assign_irq(struct pci_dev *dev) struct pci_host_bridge *hbrg = pci_find_host_bridge(dev->bus); if (!(hbrg->map_irq)) { - dev_dbg(&dev->dev, "runtime IRQ mapping not provided by arch\n"); + pci_dbg(dev, "runtime IRQ mapping not provided by arch\n"); return; } @@ -55,7 +56,7 @@ void pci_assign_irq(struct pci_dev *dev) } dev->irq = irq; - dev_dbg(&dev->dev, "assign IRQ: got %d\n", dev->irq); + pci_dbg(dev, "assign IRQ: got %d\n", dev->irq); /* Always tell the device, so the driver knows what is the real IRQ to use; the device does not use it. */ diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c index e815111f3f81..369d48d6c6f1 100644 --- a/drivers/pci/setup-res.c +++ b/drivers/pci/setup-res.c @@ -103,7 +103,7 @@ static void pci_std_update_resource(struct pci_dev *dev, int resno) pci_read_config_dword(dev, reg, &check); if ((new ^ check) & mask) { - dev_err(&dev->dev, "BAR %d: error updating (%#08x != %#08x)\n", + pci_err(dev, "BAR %d: error updating (%#08x != %#08x)\n", resno, new, check); } @@ -112,7 +112,7 @@ static void pci_std_update_resource(struct pci_dev *dev, int resno) pci_write_config_dword(dev, reg + 4, new); pci_read_config_dword(dev, reg + 4, &check); if (check != new) { - dev_err(&dev->dev, "BAR %d: error updating (high %#08x != %#08x)\n", + pci_err(dev, "BAR %d: error updating (high %#08x != %#08x)\n", resno, new, check); } } @@ -137,7 +137,7 @@ int pci_claim_resource(struct pci_dev *dev, int resource) struct resource *root, *conflict; if (res->flags & IORESOURCE_UNSET) { - dev_info(&dev->dev, "can't claim BAR %d %pR: no address assigned\n", + pci_info(dev, "can't claim BAR %d %pR: no address assigned\n", resource, res); return -EINVAL; } @@ -152,7 +152,7 @@ int pci_claim_resource(struct pci_dev *dev, int resource) root = pci_find_parent_resource(dev, res); if (!root) { - dev_info(&dev->dev, "can't claim BAR %d %pR: no compatible bridge window\n", + pci_info(dev, "can't claim BAR %d %pR: no compatible bridge window\n", resource, res); res->flags |= IORESOURCE_UNSET; return -EINVAL; @@ -160,7 +160,7 @@ int pci_claim_resource(struct pci_dev *dev, int resource) conflict = request_resource_conflict(root, res); if (conflict) { - dev_info(&dev->dev, "can't claim BAR %d %pR: address conflict with %s %pR\n", + pci_info(dev, "can't claim BAR %d %pR: address conflict with %s %pR\n", resource, res, conflict->name, conflict); res->flags |= IORESOURCE_UNSET; return -EBUSY; @@ -172,7 +172,7 @@ EXPORT_SYMBOL(pci_claim_resource); void pci_disable_bridge_window(struct pci_dev *dev) { - dev_info(&dev->dev, "disabling bridge mem windows\n"); + pci_info(dev, "disabling bridge mem windows\n"); /* MMIO Base/Limit */ pci_write_config_dword(dev, PCI_MEMORY_BASE, 0x0000fff0); @@ -221,11 +221,11 @@ static int pci_revert_fw_address(struct resource *res, struct pci_dev *dev, root = &iomem_resource; } - dev_info(&dev->dev, "BAR %d: trying firmware assignment %pR\n", + pci_info(dev, "BAR %d: trying firmware assignment %pR\n", resno, res); conflict = request_resource_conflict(root, res); if (conflict) { - dev_info(&dev->dev, "BAR %d: %pR conflicts with %s %pR\n", + pci_info(dev, "BAR %d: %pR conflicts with %s %pR\n", resno, res, conflict->name, conflict); res->start = start; res->end = end; @@ -324,7 +324,7 @@ int pci_assign_resource(struct pci_dev *dev, int resno) res->flags |= IORESOURCE_UNSET; align = pci_resource_alignment(dev, res); if (!align) { - dev_info(&dev->dev, "BAR %d: can't assign %pR (bogus alignment)\n", + pci_info(dev, "BAR %d: can't assign %pR (bogus alignment)\n", resno, res); return -EINVAL; } @@ -338,19 +338,18 @@ int pci_assign_resource(struct pci_dev *dev, int resno) * working, which is better than just leaving it disabled. */ if (ret < 0) { - dev_info(&dev->dev, "BAR %d: no space for %pR\n", resno, res); + pci_info(dev, "BAR %d: no space for %pR\n", resno, res); ret = pci_revert_fw_address(res, dev, resno, size); } if (ret < 0) { - dev_info(&dev->dev, "BAR %d: failed to assign %pR\n", resno, - res); + pci_info(dev, "BAR %d: failed to assign %pR\n", resno, res); return ret; } res->flags &= ~IORESOURCE_UNSET; res->flags &= ~IORESOURCE_STARTALIGN; - dev_info(&dev->dev, "BAR %d: assigned %pR\n", resno, res); + pci_info(dev, "BAR %d: assigned %pR\n", resno, res); if (resno < PCI_BRIDGE_RESOURCES) pci_update_resource(dev, resno); @@ -372,7 +371,7 @@ int pci_reassign_resource(struct pci_dev *dev, int resno, resource_size_t addsiz flags = res->flags; res->flags |= IORESOURCE_UNSET; if (!res->parent) { - dev_info(&dev->dev, "BAR %d: can't reassign an unassigned resource %pR\n", + pci_info(dev, "BAR %d: can't reassign an unassigned resource %pR\n", resno, res); return -EINVAL; } @@ -382,14 +381,14 @@ int pci_reassign_resource(struct pci_dev *dev, int resno, resource_size_t addsiz ret = _pci_assign_resource(dev, resno, new_size, min_align); if (ret) { res->flags = flags; - dev_info(&dev->dev, "BAR %d: %pR (failed to expand by %#llx)\n", + pci_info(dev, "BAR %d: %pR (failed to expand by %#llx)\n", resno, res, (unsigned long long) addsize); return ret; } res->flags &= ~IORESOURCE_UNSET; res->flags &= ~IORESOURCE_STARTALIGN; - dev_info(&dev->dev, "BAR %d: reassigned %pR (expanded by %#llx)\n", + pci_info(dev, "BAR %d: reassigned %pR (expanded by %#llx)\n", resno, res, (unsigned long long) addsize); if (resno < PCI_BRIDGE_RESOURCES) pci_update_resource(dev, resno); @@ -401,7 +400,7 @@ void pci_release_resource(struct pci_dev *dev, int resno) { struct resource *res = dev->resource + resno; - dev_info(&dev->dev, "BAR %d: releasing %pR\n", resno, res); + pci_info(dev, "BAR %d: releasing %pR\n", resno, res); release_resource(res); res->end = resource_size(res) - 1; res->start = 0; @@ -477,13 +476,13 @@ int pci_enable_resources(struct pci_dev *dev, int mask) continue; if (r->flags & IORESOURCE_UNSET) { - dev_err(&dev->dev, "can't enable device: BAR %d %pR not assigned\n", + pci_err(dev, "can't enable device: BAR %d %pR not assigned\n", i, r); return -EINVAL; } if (!r->parent) { - dev_err(&dev->dev, "can't enable device: BAR %d %pR not claimed\n", + pci_err(dev, "can't enable device: BAR %d %pR not claimed\n", i, r); return -EINVAL; } @@ -495,8 +494,7 @@ int pci_enable_resources(struct pci_dev *dev, int mask) } if (cmd != old_cmd) { - dev_info(&dev->dev, "enabling device (%04x -> %04x)\n", - old_cmd, cmd); + pci_info(dev, "enabling device (%04x -> %04x)\n", old_cmd, cmd); pci_write_config_word(dev, PCI_COMMAND, cmd); } return 0; diff --git a/drivers/pci/slot.c b/drivers/pci/slot.c index e42909524dee..d10f556dc03e 100644 --- a/drivers/pci/slot.c +++ b/drivers/pci/slot.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * drivers/pci/slot.c * Copyright (C) 2006 Matthew Wilcox <matthew@wil.cx> diff --git a/drivers/pci/switch/Kconfig b/drivers/pci/switch/Kconfig index 4c49648e0646..aee28a5bb98f 100644 --- a/drivers/pci/switch/Kconfig +++ b/drivers/pci/switch/Kconfig @@ -1,3 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + menu "PCI switch controller drivers" depends on PCI diff --git a/drivers/pci/switch/Makefile b/drivers/pci/switch/Makefile index 37d8cfb03f3f..acd56d3b4a35 100644 --- a/drivers/pci/switch/Makefile +++ b/drivers/pci/switch/Makefile @@ -1 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_PCI_SW_SWITCHTEC) += switchtec.o diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c index fab143a17f9c..a60c0ab7883d 100644 --- a/drivers/pci/switch/switchtec.c +++ b/drivers/pci/switch/switchtec.c @@ -1,16 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Microsemi Switchtec(tm) PCIe Management Driver * Copyright (c) 2017, Microsemi Corporation - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * */ #include <linux/switchtec.h> @@ -707,6 +698,7 @@ static const struct event_reg { EV_GLB(SWITCHTEC_IOCTL_EVENT_CLI_MRPC_COMP_ASYNC, cli_mrpc_comp_async_hdr), EV_GLB(SWITCHTEC_IOCTL_EVENT_GPIO_INT, gpio_interrupt_hdr), + EV_GLB(SWITCHTEC_IOCTL_EVENT_GFMS, gfms_event_hdr), EV_PAR(SWITCHTEC_IOCTL_EVENT_PART_RESET, part_reset_hdr), EV_PAR(SWITCHTEC_IOCTL_EVENT_MRPC_COMP, mrpc_comp_hdr), EV_PAR(SWITCHTEC_IOCTL_EVENT_MRPC_COMP_ASYNC, mrpc_comp_async_hdr), @@ -1352,6 +1344,8 @@ static const struct pci_device_id switchtec_pci_tbl[] = { SWITCHTEC_PCI_DEVICE(0x8534), //PFX 64xG3 SWITCHTEC_PCI_DEVICE(0x8535), //PFX 80xG3 SWITCHTEC_PCI_DEVICE(0x8536), //PFX 96xG3 + SWITCHTEC_PCI_DEVICE(0x8541), //PSX 24xG3 + SWITCHTEC_PCI_DEVICE(0x8542), //PSX 32xG3 SWITCHTEC_PCI_DEVICE(0x8543), //PSX 48xG3 SWITCHTEC_PCI_DEVICE(0x8544), //PSX 64xG3 SWITCHTEC_PCI_DEVICE(0x8545), //PSX 80xG3 diff --git a/drivers/pci/syscall.c b/drivers/pci/syscall.c index 83efa001c2e7..e725f99b5479 100644 --- a/drivers/pci/syscall.c +++ b/drivers/pci/syscall.c @@ -28,7 +28,7 @@ SYSCALL_DEFINE5(pciconfig_read, unsigned long, bus, unsigned long, dfn, return -EPERM; err = -ENODEV; - dev = pci_get_bus_and_slot(bus, dfn); + dev = pci_get_domain_bus_and_slot(0, bus, dfn); if (!dev) goto error; @@ -96,7 +96,7 @@ SYSCALL_DEFINE5(pciconfig_write, unsigned long, bus, unsigned long, dfn, if (!capable(CAP_SYS_ADMIN)) return -EPERM; - dev = pci_get_bus_and_slot(bus, dfn); + dev = pci_get_domain_bus_and_slot(0, bus, dfn); if (!dev) return -ENODEV; diff --git a/drivers/pci/vc.c b/drivers/pci/vc.c index 1fa3a3219c45..5acd9c02683a 100644 --- a/drivers/pci/vc.c +++ b/drivers/pci/vc.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * PCI Virtual Channel support * * Copyright (C) 2013 Red Hat, Inc. All rights reserved. * Author: Alex Williamson <alex.williamson@redhat.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/device.h> @@ -57,7 +54,7 @@ static void pci_vc_load_arb_table(struct pci_dev *dev, int pos) PCI_VC_PORT_STATUS_TABLE)) return; - dev_err(&dev->dev, "VC arbitration table failed to load\n"); + pci_err(dev, "VC arbitration table failed to load\n"); } /** @@ -85,7 +82,7 @@ static void pci_vc_load_port_arb_table(struct pci_dev *dev, int pos, int res) if (pci_wait_for_pending(dev, status_pos, PCI_VC_RES_STATUS_TABLE)) return; - dev_err(&dev->dev, "VC%d port arbitration table failed to load\n", res); + pci_err(dev, "VC%d port arbitration table failed to load\n", res); } /** @@ -161,11 +158,11 @@ enable: pci_write_config_dword(dev, ctrl_pos, ctrl); if (!pci_wait_for_pending(dev, status_pos, PCI_VC_RES_STATUS_NEGO)) - dev_err(&dev->dev, "VC%d negotiation stuck pending\n", id); + pci_err(dev, "VC%d negotiation stuck pending\n", id); if (link && !pci_wait_for_pending(link, status_pos2, PCI_VC_RES_STATUS_NEGO)) - dev_err(&link->dev, "VC%d negotiation stuck pending\n", id); + pci_err(link, "VC%d negotiation stuck pending\n", id); } /** @@ -195,8 +192,7 @@ static int pci_vc_do_save_buffer(struct pci_dev *dev, int pos, /* Sanity check buffer size for save/restore */ if (buf && save_state->cap.size != pci_vc_do_save_buffer(dev, pos, NULL, save)) { - dev_err(&dev->dev, - "VC save buffer size does not match @0x%x\n", pos); + pci_err(dev, "VC save buffer size does not match @0x%x\n", pos); return -ENOMEM; } @@ -366,14 +362,14 @@ int pci_save_vc_state(struct pci_dev *dev) save_state = pci_find_saved_ext_cap(dev, vc_caps[i].id); if (!save_state) { - dev_err(&dev->dev, "%s buffer not found in %s\n", + pci_err(dev, "%s buffer not found in %s\n", vc_caps[i].name, __func__); return -ENOMEM; } ret = pci_vc_do_save_buffer(dev, pos, save_state, true); if (ret) { - dev_err(&dev->dev, "%s save unsuccessful %s\n", + pci_err(dev, "%s save unsuccessful %s\n", vc_caps[i].name, __func__); return ret; } @@ -426,8 +422,7 @@ void pci_allocate_vc_save_buffers(struct pci_dev *dev) len = pci_vc_do_save_buffer(dev, pos, NULL, false); if (pci_add_ext_cap_save_buffer(dev, vc_caps[i].id, len)) - dev_err(&dev->dev, - "unable to preallocate %s save buffer\n", + pci_err(dev, "unable to preallocate %s save buffer\n", vc_caps[i].name); } } diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c index 39b79070335d..70fba57d6103 100644 --- a/drivers/pci/vpd.c +++ b/drivers/pci/vpd.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * File: vpd.c * Purpose: Provide PCI VPD support diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c index 8fc2e9532575..8785014f656e 100644 --- a/drivers/pci/xen-pcifront.c +++ b/drivers/pci/xen-pcifront.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Xen PCI Frontend. * @@ -261,8 +262,8 @@ static int pci_frontend_enable_msix(struct pci_dev *dev, struct msi_desc *entry; if (nvec > SH_INFO_MAX_VEC) { - dev_err(&dev->dev, "too much vector for pci frontend: %x." - " Increase SH_INFO_MAX_VEC.\n", nvec); + pci_err(dev, "too many vectors (0x%x) for PCI frontend:" + " Increase SH_INFO_MAX_VEC\n", nvec); return -EINVAL; } @@ -281,7 +282,7 @@ static int pci_frontend_enable_msix(struct pci_dev *dev, /* we get the result */ for (i = 0; i < nvec; i++) { if (op.msix_entries[i].vector <= 0) { - dev_warn(&dev->dev, "MSI-X entry %d is invalid: %d!\n", + pci_warn(dev, "MSI-X entry %d is invalid: %d!\n", i, op.msix_entries[i].vector); err = -EINVAL; vector[i] = -1; @@ -295,7 +296,7 @@ static int pci_frontend_enable_msix(struct pci_dev *dev, err = op.value; } } else { - dev_err(&dev->dev, "enable msix get err %x\n", err); + pci_err(dev, "enable msix get err %x\n", err); } return err; } @@ -316,7 +317,7 @@ static void pci_frontend_disable_msix(struct pci_dev *dev) /* What should do for error ? */ if (err) - dev_err(&dev->dev, "pci_disable_msix get err %x\n", err); + pci_err(dev, "pci_disable_msix get err %x\n", err); } static int pci_frontend_enable_msi(struct pci_dev *dev, int vector[]) @@ -335,13 +336,13 @@ static int pci_frontend_enable_msi(struct pci_dev *dev, int vector[]) if (likely(!err)) { vector[0] = op.value; if (op.value <= 0) { - dev_warn(&dev->dev, "MSI entry is invalid: %d!\n", + pci_warn(dev, "MSI entry is invalid: %d!\n", op.value); err = -EINVAL; vector[0] = -1; } } else { - dev_err(&dev->dev, "pci frontend enable msi failed for dev " + pci_err(dev, "pci frontend enable msi failed for dev " "%x:%x\n", op.bus, op.devfn); err = -EINVAL; } @@ -560,7 +561,7 @@ static void free_root_bus_devs(struct pci_bus *bus) while (!list_empty(&bus->devices)) { dev = container_of(bus->devices.next, struct pci_dev, bus_list); - dev_dbg(&dev->dev, "removing device\n"); + pci_dbg(dev, "removing device\n"); pci_stop_and_remove_bus_device(dev); } } @@ -595,6 +596,7 @@ static pci_ers_result_t pcifront_common_process(int cmd, struct pci_driver *pdrv; int bus = pdev->sh_info->aer_op.bus; int devfn = pdev->sh_info->aer_op.devfn; + int domain = pdev->sh_info->aer_op.domain; struct pci_dev *pcidev; int flag = 0; @@ -603,7 +605,7 @@ static pci_ers_result_t pcifront_common_process(int cmd, cmd, bus, devfn); result = PCI_ERS_RESULT_NONE; - pcidev = pci_get_bus_and_slot(bus, devfn); + pcidev = pci_get_domain_bus_and_slot(domain, bus, devfn); if (!pcidev || !pcidev->driver) { dev_err(&pdev->xdev->dev, "device or AER driver is NULL\n"); pci_dev_put(pcidev); @@ -613,8 +615,7 @@ static pci_ers_result_t pcifront_common_process(int cmd, if (pdrv) { if (pdrv->err_handler && pdrv->err_handler->error_detected) { - dev_dbg(&pcidev->dev, - "trying to call AER service\n"); + pci_dbg(pcidev, "trying to call AER service\n"); if (pcidev) { flag = 1; switch (cmd) { |