From b918c62e086b2130a7bae44110ca516ef10bfe5a Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Thu, 17 May 2012 18:51:11 -0700 Subject: PCI: replace struct pci_bus secondary/subordinate with busn_res Replace the struct pci_bus secondary/subordinate members with the struct resource busn_res. Later we'll build a resource tree of these bus numbers. [bhelgaas: changelog] Signed-off-by: Yinghai Lu Signed-off-by: Bjorn Helgaas --- arch/sparc/kernel/pci.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c index fdaf21811670..c85bfd788f74 100644 --- a/arch/sparc/kernel/pci.c +++ b/arch/sparc/kernel/pci.c @@ -535,7 +535,7 @@ static void __devinit of_scan_pci_bridge(struct pci_pbm_info *pbm, } bus->primary = dev->bus->number; - bus->subordinate = busrange[1]; + bus->busn_res.end = busrange[1]; bus->bridge_ctl = 0; /* parse ranges property, or cook one up by hand for Simba */ @@ -693,8 +693,8 @@ struct pci_bus * __devinit pci_scan_one_pbm(struct pci_pbm_info *pbm, pci_free_resource_list(&resources); return NULL; } - bus->secondary = pbm->pci_first_busno; - bus->subordinate = pbm->pci_last_busno; + bus->busn_res.start = pbm->pci_first_busno; + bus->busn_res.end = pbm->pci_last_busno; pci_of_scan_bus(pbm, node, bus); pci_bus_add_devices(bus); -- cgit v1.2.3 From 3f1b540d460589e20df882aa2c86808d113890a8 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Thu, 17 May 2012 18:51:12 -0700 Subject: sparc/PCI: register busn_res for root buses Add the host bridge bus number aperture to the resource list. Like the MMIO and I/O port apertures, this is used when assigning resources to hot-added devices or in the case of conflicts. [bhelgaas: changelog, fix "pci_last_busn" typo] Acked-by: "David S. Miller" CC: sparclinux@vger.kernel.org Signed-off-by: Yinghai Lu Signed-off-by: Bjorn Helgaas --- arch/sparc/kernel/pci.c | 8 +++++--- arch/sparc/kernel/pci_impl.h | 1 + 2 files changed, 6 insertions(+), 3 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c index c85bfd788f74..4f92a9aba358 100644 --- a/arch/sparc/kernel/pci.c +++ b/arch/sparc/kernel/pci.c @@ -535,7 +535,7 @@ static void __devinit of_scan_pci_bridge(struct pci_pbm_info *pbm, } bus->primary = dev->bus->number; - bus->busn_res.end = busrange[1]; + pci_bus_insert_busn_res(bus, busrange[0], busrange[1]); bus->bridge_ctl = 0; /* parse ranges property, or cook one up by hand for Simba */ @@ -685,6 +685,10 @@ struct pci_bus * __devinit pci_scan_one_pbm(struct pci_pbm_info *pbm, pbm->io_space.start); pci_add_resource_offset(&resources, &pbm->mem_space, pbm->mem_space.start); + pbm->busn.start = pbm->pci_first_busno; + pbm->busn.end = pbm->pci_last_busno; + pbm->busn.flags = IORESOURCE_BUS; + pci_add_resource(&resources, &pbm->busn); bus = pci_create_root_bus(parent, pbm->pci_first_busno, pbm->pci_ops, pbm, &resources); if (!bus) { @@ -693,8 +697,6 @@ struct pci_bus * __devinit pci_scan_one_pbm(struct pci_pbm_info *pbm, pci_free_resource_list(&resources); return NULL; } - bus->busn_res.start = pbm->pci_first_busno; - bus->busn_res.end = pbm->pci_last_busno; pci_of_scan_bus(pbm, node, bus); pci_bus_add_devices(bus); diff --git a/arch/sparc/kernel/pci_impl.h b/arch/sparc/kernel/pci_impl.h index 6beb60df31d0..918a2031c8bb 100644 --- a/arch/sparc/kernel/pci_impl.h +++ b/arch/sparc/kernel/pci_impl.h @@ -97,6 +97,7 @@ struct pci_pbm_info { /* PBM I/O and Memory space resources. */ struct resource io_space; struct resource mem_space; + struct resource busn; /* Base of PCI Config space, can be per-PBM or shared. */ unsigned long config_space; -- cgit v1.2.3 From 60cd4dba9b75da175c79d0dc6d7beb8701307ff8 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Fri, 15 Jun 2012 16:38:23 -0600 Subject: sparc/PCI: remove unused pcibios_assign_resource() definition pcibios_assign_resource() isn't used anywhere; remove it. Signed-off-by: Bjorn Helgaas --- arch/sparc/kernel/pcic.c | 5 ----- 1 file changed, 5 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c index ded3f6090c3f..46ba84998f16 100644 --- a/arch/sparc/kernel/pcic.c +++ b/arch/sparc/kernel/pcic.c @@ -884,11 +884,6 @@ void __init sun4m_pci_init_IRQ(void) sparc_config.load_profile_irq = pcic_load_profile_irq; } -int pcibios_assign_resource(struct pci_dev *pdev, int resource) -{ - return -ENXIO; -} - /* * This probably belongs here rather than ioport.c because * we do not want this crud linked into SBus kernels. -- cgit v1.2.3 From c53a25543e69d23caf2514c3ce3e734e0a68f4e9 Mon Sep 17 00:00:00 2001 From: Myron Stowe Date: Mon, 25 Jun 2012 21:32:12 -0600 Subject: sparc/PCI: factor out pcibios_setup() The PCI core provides a generic pcibios_setup() routine. Drop this architecture-specific version in favor of that. Acked-by: David S. Miller Signed-off-by: Myron Stowe Signed-off-by: Bjorn Helgaas --- arch/sparc/kernel/leon_pci.c | 8 -------- arch/sparc/kernel/pci.c | 5 ----- arch/sparc/kernel/pcic.c | 8 -------- 3 files changed, 21 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/kernel/leon_pci.c b/arch/sparc/kernel/leon_pci.c index 19f56058742b..21dcda75a520 100644 --- a/arch/sparc/kernel/leon_pci.c +++ b/arch/sparc/kernel/leon_pci.c @@ -91,14 +91,6 @@ void __devinit pcibios_fixup_bus(struct pci_bus *pbus) } } -/* - * Other archs parse arguments here. - */ -char * __devinit pcibios_setup(char *str) -{ - return str; -} - resource_size_t pcibios_align_resource(void *data, const struct resource *res, resource_size_t size, resource_size_t align) { diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c index fdaf21811670..3e7fba0a5583 100644 --- a/arch/sparc/kernel/pci.c +++ b/arch/sparc/kernel/pci.c @@ -747,11 +747,6 @@ int pcibios_enable_device(struct pci_dev *dev, int mask) return 0; } -char * __devinit pcibios_setup(char *str) -{ - return str; -} - /* Platform support for /proc/bus/pci/X/Y mmap()s. */ /* If the user uses a host-bridge as the PCI device, he may use diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c index ded3f6090c3f..97eb52937b82 100644 --- a/arch/sparc/kernel/pcic.c +++ b/arch/sparc/kernel/pcic.c @@ -767,14 +767,6 @@ static void watchdog_reset() { } #endif -/* - * Other archs parse arguments here. - */ -char * __devinit pcibios_setup(char *str) -{ - return str; -} - resource_size_t pcibios_align_resource(void *data, const struct resource *res, resource_size_t size, resource_size_t align) { -- cgit v1.2.3 From 1c975931128c1128892981095a64fb8eabf240eb Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Mon, 9 Jul 2012 13:39:52 -0600 Subject: sparc/PCI: replace pci_cfg_fake_ranges() with pci_read_bridge_bases() The generic code to read P2P bridge windows is functionally equivalent to the sparc-specific pci_cfg_fake_ranges(), so use the generic code. The "if (!res->start) res->start = ..." removed from the I/O window code here was an artifact of the Intel 1K window support from 9d265124d051 and is no longer necessary (it probably was just cloned from x86 and was never useful on sparc). Acked-by: David S. Miller Signed-off-by: Bjorn Helgaas --- arch/sparc/kernel/pci.c | 89 +------------------------------------------------ 1 file changed, 1 insertion(+), 88 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c index fdaf21811670..fa53d552875f 100644 --- a/arch/sparc/kernel/pci.c +++ b/arch/sparc/kernel/pci.c @@ -375,93 +375,6 @@ static void __devinit apb_calc_first_last(u8 map, u32 *first_p, u32 *last_p) *last_p = last; } -/* For PCI bus devices which lack a 'ranges' property we interrogate - * the config space values to set the resources, just like the generic - * Linux PCI probing code does. - */ -static void __devinit pci_cfg_fake_ranges(struct pci_dev *dev, - struct pci_bus *bus, - struct pci_pbm_info *pbm) -{ - struct pci_bus_region region; - struct resource *res, res2; - u8 io_base_lo, io_limit_lo; - u16 mem_base_lo, mem_limit_lo; - unsigned long base, limit; - - pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo); - pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo); - base = (io_base_lo & PCI_IO_RANGE_MASK) << 8; - limit = (io_limit_lo & PCI_IO_RANGE_MASK) << 8; - - if ((io_base_lo & PCI_IO_RANGE_TYPE_MASK) == PCI_IO_RANGE_TYPE_32) { - u16 io_base_hi, io_limit_hi; - - pci_read_config_word(dev, PCI_IO_BASE_UPPER16, &io_base_hi); - pci_read_config_word(dev, PCI_IO_LIMIT_UPPER16, &io_limit_hi); - base |= (io_base_hi << 16); - limit |= (io_limit_hi << 16); - } - - res = bus->resource[0]; - if (base <= limit) { - res->flags = (io_base_lo & PCI_IO_RANGE_TYPE_MASK) | IORESOURCE_IO; - res2.flags = res->flags; - region.start = base; - region.end = limit + 0xfff; - pcibios_bus_to_resource(dev, &res2, ®ion); - if (!res->start) - res->start = res2.start; - if (!res->end) - res->end = res2.end; - } - - pci_read_config_word(dev, PCI_MEMORY_BASE, &mem_base_lo); - pci_read_config_word(dev, PCI_MEMORY_LIMIT, &mem_limit_lo); - base = (mem_base_lo & PCI_MEMORY_RANGE_MASK) << 16; - limit = (mem_limit_lo & PCI_MEMORY_RANGE_MASK) << 16; - - res = bus->resource[1]; - if (base <= limit) { - res->flags = ((mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) | - IORESOURCE_MEM); - region.start = base; - region.end = limit + 0xfffff; - pcibios_bus_to_resource(dev, res, ®ion); - } - - pci_read_config_word(dev, PCI_PREF_MEMORY_BASE, &mem_base_lo); - pci_read_config_word(dev, PCI_PREF_MEMORY_LIMIT, &mem_limit_lo); - base = (mem_base_lo & PCI_PREF_RANGE_MASK) << 16; - limit = (mem_limit_lo & PCI_PREF_RANGE_MASK) << 16; - - if ((mem_base_lo & PCI_PREF_RANGE_TYPE_MASK) == PCI_PREF_RANGE_TYPE_64) { - u32 mem_base_hi, mem_limit_hi; - - pci_read_config_dword(dev, PCI_PREF_BASE_UPPER32, &mem_base_hi); - pci_read_config_dword(dev, PCI_PREF_LIMIT_UPPER32, &mem_limit_hi); - - /* - * Some bridges set the base > limit by default, and some - * (broken) BIOSes do not initialize them. If we find - * this, just assume they are not being used. - */ - if (mem_base_hi <= mem_limit_hi) { - base |= ((long) mem_base_hi) << 32; - limit |= ((long) mem_limit_hi) << 32; - } - } - - res = bus->resource[2]; - if (base <= limit) { - res->flags = ((mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) | - IORESOURCE_MEM | IORESOURCE_PREFETCH); - region.start = base; - region.end = limit + 0xfffff; - pcibios_bus_to_resource(dev, res, ®ion); - } -} - /* Cook up fake bus resources for SUNW,simba PCI bridges which lack * a proper 'ranges' property. */ @@ -550,7 +463,7 @@ static void __devinit of_scan_pci_bridge(struct pci_pbm_info *pbm, apb_fake_ranges(dev, bus, pbm); goto after_ranges; } else if (ranges == NULL) { - pci_cfg_fake_ranges(dev, bus, pbm); + pci_read_bridge_bases(bus); goto after_ranges; } i = 1; -- cgit v1.2.3