| Commit message (Collapse) | Author | Age | Files | Lines |
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
- Define to_pci_sysdata() always to fix build breakage when !CONFIG_PCI
(Jason A. Donenfeld)
- Use PF PASID for VFs to fix VF IOMMU bind failures (Kuppuswamy
Sathyanarayanan)
* tag 'pci-v5.6-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI/ATS: Use PF PASID for VFs
x86/PCI: Define to_pci_sysdata() even when !CONFIG_PCI
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Per PCIe r5.0, sec 9.3.7.14, if a PF implements the PASID Capability, the
PF PASID configuration is shared by its VFs, and VFs must not implement
their own PASID Capability. But commit 751035b8dc06 ("PCI/ATS: Cache PASID
Capability offset") changed pci_max_pasids() and pci_pasid_features() to
use the PASID Capability of the VF device instead of the associated PF
device. This leads to IOMMU bind failures when pci_max_pasids() and
pci_pasid_features() are called for VFs.
In pci_max_pasids() and pci_pasid_features(), always use the PF PASID
Capability.
Fixes: 751035b8dc06 ("PCI/ATS: Cache PASID Capability offset")
Link: https://lore.kernel.org/r/fe891f9755cb18349389609e7fed9940fc5b081a.1580325170.git.sathyanarayanan.kuppuswamy@linux.intel.com
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v5.5+
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git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu updates from Joerg Roedel:
- Allow compiling the ARM-SMMU drivers as modules.
- Fixes and cleanups for the ARM-SMMU drivers and io-pgtable code
collected by Will Deacon. The merge-commit (6855d1ba7537) has all the
details.
- Cleanup of the iommu_put_resv_regions() call-backs in various
drivers.
- AMD IOMMU driver cleanups.
- Update for the x2APIC support in the AMD IOMMU driver.
- Preparation patches for Intel VT-d nested mode support.
- RMRR and identity domain handling fixes for the Intel VT-d driver.
- More small fixes and cleanups.
* tag 'iommu-updates-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (87 commits)
iommu/amd: Remove the unnecessary assignment
iommu/vt-d: Remove unnecessary WARN_ON_ONCE()
iommu/vt-d: Unnecessary to handle default identity domain
iommu/vt-d: Allow devices with RMRRs to use identity domain
iommu/vt-d: Add RMRR base and end addresses sanity check
iommu/vt-d: Mark firmware tainted if RMRR fails sanity check
iommu/amd: Remove unused struct member
iommu/amd: Replace two consecutive readl calls with one readq
iommu/vt-d: Don't reject Host Bridge due to scope mismatch
PCI/ATS: Add PASID stubs
iommu/arm-smmu-v3: Return -EBUSY when trying to re-add a device
iommu/arm-smmu-v3: Improve add_device() error handling
iommu/arm-smmu-v3: Use WRITE_ONCE() when changing validity of an STE
iommu/arm-smmu-v3: Add second level of context descriptor table
iommu/arm-smmu-v3: Prepare for handling arm_smmu_write_ctx_desc() failure
iommu/arm-smmu-v3: Propagate ssid_bits
iommu/arm-smmu-v3: Add support for Substream IDs
iommu/arm-smmu-v3: Add context descriptor tables allocators
iommu/arm-smmu-v3: Prepare arm_smmu_s1_cfg for SSID support
ACPI/IORT: Parse SSID property of named component node
...
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Building drivers for ATS-aware IOMMUs as modules requires access to
pci_ats_disabled(). Export it as a GPL symbol to get things working.
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
Tested-by: John Garry <john.garry@huawei.com> # smmu v3
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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Commit d355bb209783 ("PCI/ATS: Remove unnecessary EXPORT_SYMBOL_GPL()")
unexported a bunch of symbols from the PCI core since the only external
users were non-modular IOMMU drivers. Although most of those symbols
can remain private for now, 'pci_{enable,disable_ats()' is required for
the ARM SMMUv3 driver to build as a module, otherwise we get a build
failure as follows:
| ERROR: "pci_enable_ats" [drivers/iommu/arm-smmu-v3.ko] undefined!
| ERROR: "pci_disable_ats" [drivers/iommu/arm-smmu-v3.ko] undefined!
Re-export these two functions so that the ARM SMMUv3 driver can be build
as a module.
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
[will: rewrote commit message]
Signed-off-by: Will Deacon <will@kernel.org>
Tested-by: John Garry <john.garry@huawei.com> # smmu v3
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"A pretty small batch for us, and apologies for it being a bit late, I
wanted to sneak Christophe's user_access_begin() series in.
Summary:
- Implement user_access_begin() and friends for our platforms that
support controlling kernel access to userspace.
- Enable CONFIG_VMAP_STACK on 32-bit Book3S and 8xx.
- Some tweaks to our pseries IOMMU code to allow SVMs ("secure"
virtual machines) to use the IOMMU.
- Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE to the 32-bit
VDSO, and some other improvements.
- A series to use the PCI hotplug framework to control opencapi
card's so that they can be reset and re-read after flashing a new
FPGA image.
As well as other minor fixes and improvements as usual.
Thanks to: Alastair D'Silva, Alexandre Ghiti, Alexey Kardashevskiy,
Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Bai Yingjie, Chen
Zhou, Christophe Leroy, Frederic Barrat, Greg Kurz, Jason A.
Donenfeld, Joel Stanley, Jordan Niethe, Julia Lawall, Krzysztof
Kozlowski, Laurent Dufour, Laurentiu Tudor, Linus Walleij, Michael
Bringmann, Nathan Chancellor, Nicholas Piggin, Nick Desaulniers,
Oliver O'Halloran, Peter Ujfalusi, Pingfan Liu, Ram Pai, Randy Dunlap,
Russell Currey, Sam Bobroff, Sebastian Andrzej Siewior, Shawn
Anastasio, Stephen Rothwell, Steve Best, Sukadev Bhattiprolu, Thiago
Jung Bauermann, Tyrel Datwyler, Vaibhav Jain"
* tag 'powerpc-5.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (131 commits)
powerpc: configs: Cleanup old Kconfig options
powerpc/configs/skiroot: Enable some more hardening options
powerpc/configs/skiroot: Disable xmon default & enable reboot on panic
powerpc/configs/skiroot: Enable security features
powerpc/configs/skiroot: Update for symbol movement only
powerpc/configs/skiroot: Drop default n CONFIG_CRYPTO_ECHAINIV
powerpc/configs/skiroot: Drop HID_LOGITECH
powerpc/configs: Drop NET_VENDOR_HP which moved to staging
powerpc/configs: NET_CADENCE became NET_VENDOR_CADENCE
powerpc/configs: Drop CONFIG_QLGE which moved to staging
powerpc: Do not consider weak unresolved symbol relocations as bad
powerpc/32s: Fix kasan_early_hash_table() for CONFIG_VMAP_STACK
powerpc: indent to improve Kconfig readability
powerpc: Provide initial documentation for PAPR hcalls
powerpc: Implement user_access_save() and user_access_restore()
powerpc: Implement user_access_begin and friends
powerpc/32s: Prepare prevent_user_access() for user_access_end()
powerpc/32s: Drop NULL addr verification
powerpc/kuap: Fix set direction in allow/prevent_user_access()
powerpc/32s: Fix bad_kuap_fault()
...
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An opencapi slot doesn't have an associated bridge device. It's not
needed for operation, but any warning is displayed through pci_warn()
which uses the pci_dev struct of the assocated bridge device. So wrap
those warning so that a different trace mechanism can be used if it's
an opencapi slot.
Reviewed-by: Alastair D'Silva <alastair@d-silva.org>
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191121134918.7155-11-fbarrat@linux.ibm.com
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The driver only allows to disable a slot in the POPULATED
state. However, if an error occurs while enabling the slot, say
because the link couldn't be trained, then the POPULATED state may not
be reached, yet the power state of the slot is on. So allow to disable
a slot in the REGISTERED state. Removing the devices will do nothing
since it's not populated, and we'll set the power state of the slot
back to off.
Reviewed-by: Alastair D'Silva <alastair@d-silva.org>
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191121134918.7155-10-fbarrat@linux.ibm.com
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Add the opencapi PHBs to the list of PHBs being scanned to look for
slots.
Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191121134918.7155-9-fbarrat@linux.ibm.com
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When changing the slot state, if opal hits an error and tells as such
in the asynchronous reply, the warning "Wrong msg" is logged, which is
rather confusing. Instead we can reuse the better message which is
already used when we couldn't submit the asynchronous opal request
initially.
Reviewed-by: Alastair D'Silva <alastair@d-silva.org>
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191121134918.7155-8-fbarrat@linux.ibm.com
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On powernv, when removing a device through hotplug, the following
warning is logged:
Invalid refcount <.> on <...>
It may be incorrect, the refcount may be set to a higher value than 1
and be valid. of_detach_node() can drop more than one reference. As it
doesn't seem trivial to assert the correct value, let's remove the
warning.
Reviewed-by: Alastair D'Silva <alastair@d-silva.org>
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191121134918.7155-7-fbarrat@linux.ibm.com
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'PTR_ERR(p) == -E*' is a stronger condition than IS_ERR(p).
Hence, IS_ERR(p) is unneeded.
The semantic patch that generates this commit is as follows:
// <smpl>
@@
expression ptr;
constant error_code;
@@
-IS_ERR(ptr) && (PTR_ERR(ptr) == - error_code)
+PTR_ERR(ptr) == - error_code
// </smpl>
Link: http://lkml.kernel.org/r/20200106045833.1725-1-masahiroy@kernel.org
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Cc: Julia Lawall <julia.lawall@lip6.fr>
Acked-by: Stephen Boyd <sboyd@kernel.org> [drivers/clk/clk.c]
Acked-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> [GPIO]
Acked-by: Wolfram Sang <wsa@the-dreams.de> [drivers/i2c]
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> [acpi/scan.c]
Acked-by: Rob Herring <robh@kernel.org>
Cc: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The most notable change is DEFINE_SHOW_ATTRIBUTE macro split in
seq_file.h.
Conversion rule is:
llseek => proc_lseek
unlocked_ioctl => proc_ioctl
xxx => proc_xxx
delete ".owner = THIS_MODULE" line
[akpm@linux-foundation.org: fix drivers/isdn/capi/kcapi_proc.c]
[sfr@canb.auug.org.au: fix kernel/sched/psi.c]
Link: http://lkml.kernel.org/r/20200122180545.36222f50@canb.auug.org.au
Link: http://lkml.kernel.org/r/20191225172546.GB13378@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"Resource management:
- Improve resource assignment for hot-added nested bridges, e.g.,
Thunderbolt (Nicholas Johnson)
Power management:
- Optionally print config space of devices before suspend (Chen Yu)
- Increase D3 delay for AMD Ryzen5/7 XHCI controllers (Daniel Drake)
Virtualization:
- Generalize DMA alias quirks (James Sewart)
- Add DMA alias quirk for PLX PEX NTB (James Sewart)
- Fix IOV memory leak (Navid Emamdoost)
AER:
- Log which device prevents error recovery (Yicong Yang)
Peer-to-peer DMA:
- Whitelist Intel SkyLake-E (Armen Baloyan)
Broadcom iProc host bridge driver:
- Apply PAXC quirk whether driver is built-in or module (Wei Liu)
Broadcom STB host bridge driver:
- Add Broadcom STB PCIe host controller driver (Jim Quinlan)
Intel Gateway SoC host bridge driver:
- Add driver for Intel Gateway SoC (Dilip Kota)
Intel VMD host bridge driver:
- Add support for DMA aliases on other buses (Jon Derrick)
- Remove dma_map_ops overrides (Jon Derrick)
- Remove now-unused X86_DEV_DMA_OPS (Christoph Hellwig)
NVIDIA Tegra host bridge driver:
- Fix Tegra30 afi_pex2_ctrl register offset (Marcel Ziswiler)
Panasonic UniPhier host bridge driver:
- Remove module code since driver can't be built as a module
(Masahiro Yamada)
Qualcomm host bridge driver:
- Add support for SDM845 PCIe controller (Bjorn Andersson)
TI Keystone host bridge driver:
- Fix "num-viewport" DT property error handling (Kishon Vijay Abraham I)
- Fix link training retries initiation (Yurii Monakov)
- Fix outbound region mapping (Yurii Monakov)
Misc:
- Add Switchtec Gen4 support (Kelvin Cao)
- Add Switchtec Intercomm Notify and Upstream Error Containment
support (Logan Gunthorpe)
- Use dma_set_mask_and_coherent() since Switchtec supports 64-bit
addressing (Wesley Sheng)"
* tag 'pci-v5.6-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (60 commits)
PCI: Allow adjust_bridge_window() to shrink resource if necessary
PCI: Set resource size directly in adjust_bridge_window()
PCI: Rename extend_bridge_window() to adjust_bridge_window()
PCI: Rename extend_bridge_window() parameter
PCI: Consider alignment of hot-added bridges when assigning resources
PCI: Remove local variable usage in pci_bus_distribute_available_resources()
PCI: Pass size + alignment to pci_bus_distribute_available_resources()
PCI: Rename variables
PCI: vmd: Add two VMD Device IDs
PCI: Remove unnecessary braces
PCI: brcmstb: Add MSI support
PCI: brcmstb: Add Broadcom STB PCIe host controller driver
x86/PCI: Remove X86_DEV_DMA_OPS
PCI: vmd: Remove dma_map_ops overrides
iommu/vt-d: Remove VMD child device sanity check
iommu/vt-d: Use pci_real_dma_dev() for mapping
PCI: Introduce pci_real_dma_dev()
x86/PCI: Expose VMD's pci_dev in struct pci_sysdata
x86/PCI: Add to_pci_sysdata() helper
PCI/AER: Initialize aer_fifo
...
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- Remove unused modular code from uniphier, which cannot be built as a
module (Masahiro Yamada)
* remotes/lorenzo/pci/uniphier:
PCI: uniphier: remove module code from built-in driver
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builtin_platform_driver() and MODULE_* are always odd combination.
This file is not compiled as a module by anyone because
CONFIG_PCIE_UNIPHIER is a bool option.
Let's remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.
We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove" code.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
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- Fix checking of pm_runtime_get_sync() return value (David Engraf)
- Fix AFI_PEX2_CTRL reg offset for Tegra30 (Marcel Ziswiler)
* remotes/lorenzo/pci/tegra:
PCI: tegra: Fix afi_pex2_ctrl reg offset for Tegra30
PCI: tegra: Fix return value check of pm_runtime_get_sync()
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Fix AFI_PEX2_CTRL reg offset for Tegra30 by moving it from the Tegra20
SoC struct where it erroneously got added. This fixes the AFI_PEX2_CTRL
reg offset being uninitialised subsequently failing to bring up the
third PCIe port.
Fixes: adb2653b3d2e ("PCI: tegra: Add AFI_PEX2_CTRL reg offset as part of SoC struct")
Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Acked-by: Thierry Reding <treding@nvidia.com>
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pm_runtime_get_sync() returns the device's usage counter. This might
be >0 if the device is already powered up or CONFIG_PM is disabled.
Abort probe function on real error only.
Fixes: da76ba50963b ("PCI: tegra: Add power management support")
Link: https://lore.kernel.org/r/20191216111825.28136-1-david.engraf@sysgo.com
Signed-off-by: David Engraf <david.engraf@sysgo.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Andrew Murray <andrew.murray@arm.com>
Cc: stable@vger.kernel.org # v4.17+
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- Add DT clock/reset info for SDM845 PCIe controller (Bjorn Andersson)
- Add support for SDM845 PCIe controller to the qcom driver (Bjorn
Andersson)
* remotes/lorenzo/pci/qcom:
PCI: qcom: Add support for SDM845 PCIe controller
dt-bindings: PCI: qcom: Add support for SDM845 PCIe
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The SDM845 has one Gen2 and one Gen3 controller, add support for these.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Acked-by: Stanimir Varbanov <svarbanov@mm-sol.com>
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- Fix "EXYNOS" typographical styling (Krzysztof Kozlowski)
- Update MAINTAINERS with Andrew Murray's email address (Andrew Murray)
* remotes/lorenzo/pci/misc:
MAINTAINERS: Update my email address
PCI: exynos: Rename Exynos to lowercase
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Fix up inconsistent usage of upper and lowercase letters in "Exynos"
name.
"EXYNOS" is not an abbreviation but a regular trademarked name.
Therefore it should be written with lowercase letters starting with
capital letter.
The lowercase "Exynos" name is promoted by its manufacturer Samsung
Electronics Co., Ltd., in advertisement materials and on website.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
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- Fix link training so we can do it more than once (Yurii Monakov)
- Fix keystone outbound window mapping (Yurii Monakov)
- Fix error handling when DT lacks "num-viewport" (Kishon Vijay Abraham I)
* remotes/lorenzo/pci/keystone:
PCI: keystone: Fix error handling when "num-viewport" DT property is not populated
PCI: keystone: Fix outbound region mapping
PCI: keystone: Fix link training retries initiation
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populated
Fix error handling when "num-viewport" DT property is not populated.
Fixes: 23284ad677a9 ("PCI: keystone: Add support for PCIe EP in AM654x Platforms")
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: stable@vger.kernel.org # v5.2+
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The Keystone outbound Address Translation Unit (ATU) maps PCI MMIO space in
8 MB windows. When programming the ATU windows, we previously incremented
the starting address by 8, not 8 MB, so all the windows were mapped to the
first 8 MB. Therefore, only 8 MB of MMIO space was accessible.
Update the loop so it increments the starting address by 8 MB, not 8, so
more MMIO space is accessible.
Fixes: e75043ad9792 ("PCI: keystone: Cleanup outbound window configuration")
Link: https://lore.kernel.org/r/20191004154811.GA31397@monakov-y.office.kontur-niirs.ru
Signed-off-by: Yurii Monakov <monakov.y@gmail.com>
[bhelgaas: commit log]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Andrew Murray <andrew.murray@arm.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Cc: stable@vger.kernel.org # v4.20+
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ks_pcie_stop_link() function does not clear LTSSM_EN_VAL bit so
link training was not triggered more than once after startup.
In configurations where link can be unstable during early boot,
for example, under low temperature, it will never be established.
Fixes: 0c4ffcfe1fbc ("PCI: keystone: Add TI Keystone PCIe driver")
Signed-off-by: Yurii Monakov <monakov.y@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Andrew Murray <andrew.murray@arm.com>
Cc: stable@vger.kernel.org
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- Add intel-gw driver for PCIe host controller on Intel Gateway SoC
(Dilip Kota)
- Use shared DesignWare helpers to configure Fast Training Sequence (FTS)
in artpec6 (Dilip Kota)
* remotes/lorenzo/pci/dwc:
PCI: artpec6: Configure FTS with dwc helper function
PCI: dwc: intel: PCIe RC controller driver
dt-bindings: PCI: intel: Add YAML schemas for the PCIe RC controller
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Use DesignWare helper functions to configure Fast Training
Sequence. Drop the respective code in the driver.
Signed-off-by: Dilip Kota <eswara.kota@linux.intel.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
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Add support to PCIe RC controller on Intel Gateway SoCs.
PCIe controller is based of Synopsys DesignWare PCIe core.
Intel PCIe driver requires Upconfigure support, Fast Training
Sequence and link speed configurations. So adding the respective
helper functions in the PCIe DesignWare framework.
It also programs hardware autonomous speed during speed
configuration so defining it in pci_regs.h.
Also, mark Intel PCIe driver depends on MSI IRQ Domain
as Synopsys DesignWare framework depends on the
PCI_MSI_IRQ_DOMAIN.
Signed-off-by: Dilip Kota <eswara.kota@linux.intel.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
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- Add brcmstb PCIe bindings for Raspberry Pi 4 (Jim Quinlan)
- Add Broadcom STB PCIe host controller driver (Jim Quinlan)
- Add MSI support for Broadcom STB PCIe host controller driver (Jim
Quinlan)
* remotes/lorenzo/pci/brcmstb:
PCI: brcmstb: Add MSI support
PCI: brcmstb: Add Broadcom STB PCIe host controller driver
dt-bindings: PCI: Add bindings for brcmstb's PCIe device
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This adds MSI support to the Broadcom STB PCIe host controller. The MSI
controller is physically located within the PCIe block, however, there
is no reason why the MSI controller could not be moved elsewhere in the
future. MSIX is not supported by the HW.
Since the internal Brcmstb MSI controller is intertwined with the PCIe
controller, it is not its own platform device but rather part of the
PCIe platform device.
Signed-off-by: Jim Quinlan <james.quinlan@broadcom.com>
Co-developed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
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This adds a basic driver for Broadcom's STB PCIe controller, for now
aimed at Raspberry Pi 4's SoC, bcm2711.
Signed-off-by: Jim Quinlan <james.quinlan@broadcom.com>
Co-developed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
[lorenzo.pieralisi@arm.com: updated brcm_pcie_get_rc_bar2_size_and_offset()according to https://lore.kernel.org/linux-pci/be8ddb33a7360af1815cf686f77f3f0913d02be3.camel@suse.de]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Reviewed-by: Jeremy Linton <jeremy.linton@arm.com>
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- Save VMD's pci_dev in x86 struct pci_sysdata (Jon Derrick)
- Add pci_real_dma_dev() for DMA aliases not on the same bus as requester
(Jon Derrick)
- Add IOMMU mappings for pci_real_dma_dev() (Jon Derrick)
- Remove IOMMU sanity checks for VMD devices (Jon Derrick)
- Remove VMD dma_map_ops overrides (Jon Derrick)
- Remove unused X86_DEV_DMA_OPS (Christoph Hellwig)
- Add VMD device IDs that need bus restriction mode (Sushma Kalakota)
* pci/host-vmd:
PCI: vmd: Add two VMD Device IDs
x86/PCI: Remove X86_DEV_DMA_OPS
PCI: vmd: Remove dma_map_ops overrides
iommu/vt-d: Remove VMD child device sanity check
iommu/vt-d: Use pci_real_dma_dev() for mapping
PCI: Introduce pci_real_dma_dev()
x86/PCI: Expose VMD's pci_dev in struct pci_sysdata
x86/PCI: Add to_pci_sysdata() helper
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Add new VMD device IDs that require the bus restriction mode.
Signed-off-by: Sushma Kalakota <sushmax.kalakota@intel.com>
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Devices on the VMD domain use the VMD endpoint's requester ID and have been
relying on the VMD endpoint's DMA operations. The problem with this was
that VMD domain devices would use the VMD endpoint's attributes when doing
DMA and IOMMU mapping. We can be smarter about this by only using the VMD
endpoint when mapping and providing the correct child device's attributes
during DMA operations.
Remove the dma_map_ops redirect.
Link: https://lore.kernel.org/r/1579613871-301529-7-git-send-email-jonathan.derrick@intel.com
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
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The current DMA alias implementation requires the aliased device be on the
same PCI bus as the requester ID. Add an arch-specific mechanism to point
to another PCI device when doing mapping and PCI DMA alias search. The
default case returns the actual device.
Link: https://lore.kernel.org/r/1579613871-301529-4-git-send-email-jonathan.derrick@intel.com
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Christoph Hellwig <hch@lst.de>
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Expose VMD's pci_dev pointer in struct pci_sysdata. This will be used
indirectly by intel-iommu.c to find the correct domain.
Link: https://lore.kernel.org/r/1579613871-301529-3-git-send-email-jonathan.derrick@intel.com
[bhelgaas: commit log]
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Christoph Hellwig <hch@lst.de>
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- Fix memory leak in pci_iov_add_virtfn() (Navid Emamdoost)
- Extend pci_add_dma_alias() so it can add a range of aliases (James
Sewart)
- Add DMA aliases for PLX PEX NTB (James Sewart)
* pci/virtualization:
PCI: Add DMA alias quirk for PLX PEX NTB
PCI: Add nr_devfns parameter to pci_add_dma_alias()
PCI: Fix pci_add_dma_alias() bitmask size
PCI/IOV: Fix memory leak in pci_iov_add_virtfn()
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The PLX PEX NTB forwards DMA transactions using Requester IDs that don't
exist as PCI devices. The devfn for a transaction is used as an index into
a lookup table storing the origin of a transaction on the other side of the
bridge.
Alias all possible devfns to the NTB device so that any transaction coming
in is governed by the mappings for the NTB.
Signed-off-by: James Sewart <jamessewart@arista.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
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Add a "nr_devfns" parameter to pci_add_dma_alias() so it can be used to
create DMA aliases for a range of devfns.
[bhelgaas: incorporate nr_devfns fix from James, update
quirk_pex_vca_alias() and setup_aliases()]
Signed-off-by: James Sewart <jamessewart@arista.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The number of possible devfns is 256, but pci_add_dma_alias() allocated a
bitmap of size 255. Fix this off-by-one error.
This fixes commits 338c3149a221 ("PCI: Add support for multiple DMA
aliases") and c6635792737b ("PCI: Allocate dma_alias_mask with
bitmap_zalloc()"), but I doubt it was possible to see a problem because
it takes 4 64-bit longs (or 8 32-bit longs) to hold 255 bits, and
bitmap_zalloc() doesn't save the 255-bit size anywhere.
[bhelgaas: commit log, move #define to drivers/pci/pci.h, include loop
limit fix from Qian Cai:
https://lore.kernel.org/r/20191218170004.5297-1-cai@lca.pw]
Signed-off-by: James Sewart <jamessewart@arista.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
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In the implementation of pci_iov_add_virtfn() the allocated virtfn is
leaked if pci_setup_device() fails. The error handling is not calling
pci_stop_and_remove_bus_device(). Change the goto label to failed2.
Fixes: 156c55325d30 ("PCI: Check for pci_setup_device() failure in pci_iov_add_virtfn()")
Link: https://lore.kernel.org/r/20191125195255.23740-1-navid.emamdoost@gmail.com
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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- Support 64-bit addressing for both streaming and coherent DMA (Wesley
Sheng)
- Read vep_vector_number with 16-bit, not 32-bit read (Logan Gunthorpe)
- Add Intercomm Notify and Upstream Error Containment support (Logan
Gunthorpe)
- Remove redundant valid PFF number count (Wesley Sheng)
- Avoid unnecessary CSR read in ISR (Wesley Sheng)
- Rename Gen3-specific constants (Logan Gunthorpe)
- Rework infrastructure to support Gen3- and Gen4-specific code (Logan
Gunthorpe)
- Add Gen4 system info register support (Logan Gunthorpe)
- Add Gen4 flash information interface support (Kelvin Cao)
- Add Gen4 MRPC GAS access permission check (Kelvin Cao)
* pci/switchtec:
PCI/switchtec: Add Gen4 device IDs
PCI/switchtec: Add Gen4 MRPC GAS access permission check
PCI/switchtec: Add Gen4 flash information interface support
PCI/switchtec: Add Gen4 system info register support
PCI/switchtec: Separate Gen3 register structures into unions
PCI/switchtec: Factor out Gen3 ioctl_flash_part_info()
PCI/switchtec: Add 'generation' variable
PCI/switchtec: Rename generation-specific constants
PCI/switchtec: Move check event ID from mask_event() to switchtec_event_isr()
PCI/switchtec: Remove redundant valid PFF number count
PCI/switchtec: Add support for Intercomm Notify and Upstream Error Containment
PCI/switchtec: Fix vep_vector_number ioread width
PCI/switchtec: Use dma_set_mask_and_coherent()
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Now that Gen4 is properly supported, advertise support in the module's
device ID table and add the same IDs to the list of switchtec quirks.
[logang@deltatee.com: add commit message and quirk IDs]
Link: https://lore.kernel.org/r/20200115035648.2578-8-logang@deltatee.com
Signed-off-by: Kelvin Cao <kelvin.cao@microchip.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Gen4 hardware provides new MRPC commands to read and write directly from
any address in the PCI BAR (which Microsemi refers to as GAS). Since
accessing BARs can be dangerous and break the driver, we don't want
unprivileged users to have this ability.
Therefore, require CAP_SYS_ADMIN for the local and remote GAS access MRPC
commands. Privileged processes will already have access to the BAR through
the sysfs resource file so this doesn't give userspace any capabilities it
didn't already have.
[logang@deltatee.com: rework commit message]
Link: https://lore.kernel.org/r/20200106190337.2428-11-logang@deltatee.com
Signed-off-by: Kelvin Cao <kelvin.cao@microchip.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Add the new flash_info registers struct and the implementation of
ioctl_flash_part_info() for the new Gen4 hardware.
[logang@deltatee.com: rewrote commit message]
Link: https://lore.kernel.org/r/20200115035648.2578-7-logang@deltatee.com
Signed-off-by: Kelvin Cao <kelvin.cao@microchip.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Add the Gen4-specific system info registers and ensure their usage is
guarded by a check on the device's generation.
Link: https://lore.kernel.org/r/20200115035648.2578-6-logang@deltatee.com
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Since the sys_info and flash_info registers differ significantly in Gen4
hardware, separate out the Gen3 registers into their own structure with a
union in the main structure.
No functional changes intended.
Link: https://lore.kernel.org/r/20200115035648.2578-5-logang@deltatee.com
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Refactor ioctl_flash_part_info() into a Gen3-specific function because the
registers for flash partition information have changed significantly in
Gen4 and will require a completely different implementation.
No functional changes intended.
Co-developed-by: Kelvin Cao <kelvin.cao@microchip.com>
Link: https://lore.kernel.org/r/20200115035648.2578-4-logang@deltatee.com
Signed-off-by: Kelvin Cao <kelvin.cao@microchip.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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