From 162dedd39dcc6eca3fc0d29cf19658c6c13b840e Mon Sep 17 00:00:00 2001 From: Thomas Renninger Date: Fri, 3 Apr 2009 06:34:00 -0700 Subject: PCI quirk: disable MSI on VIA VT3364 chipsets Without this patch, Broadcom BCM5906 Ethernet controllers set up via MSI cause the machine to hang. Tejun agreed that the best is to blacklist the whole chipset and after adding it, seeing the other VIA quirks disabling MSI, this very much looks like the right way. Cc: Signed-off-by: Thomas Renninger Signed-off-by: Jesse Barnes --- drivers/pci/quirks.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/pci') diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 0254741b..3067673 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -2033,6 +2033,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_di DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi); +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi); /* Disable MSI on chipsets that are known to not support it */ static void __devinit quirk_disable_msi(struct pci_dev *dev) -- cgit v1.1 From 0bb1be3e30bfc3e09fa0ff1e887ac7da4a16c3a2 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Thu, 16 Apr 2009 13:31:10 -0600 Subject: x86/PCI: Move set_pci_bus_resources_arch_default into arch/x86 Commit 30a18d6c3f1e774de656ebd8ff219d53e2ba4029 introduced a new function to set the PCI bus resources. Unfortunately, neither the author, nor the committers seemed to know that we already have somewhere to do that -- pcibios_fixup_bus(). This patch moves the hook (used only by the K8 code) into x86-specific code where it should have been in the first place. Cc: Yinghai Lu Signed-off-by: Matthew Wilcox Acked-by: Ingo Molnar Signed-off-by: Jesse Barnes --- drivers/pci/probe.c | 6 ------ 1 file changed, 6 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 8eb50df..e3c3e08 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1118,10 +1118,6 @@ unsigned int __devinit pci_scan_child_bus(struct pci_bus *bus) return max; } -void __attribute__((weak)) set_pci_bus_resources_arch_default(struct pci_bus *b) -{ -} - struct pci_bus * pci_create_bus(struct device *parent, int bus, struct pci_ops *ops, void *sysdata) { @@ -1180,8 +1176,6 @@ struct pci_bus * pci_create_bus(struct device *parent, b->resource[0] = &ioport_resource; b->resource[1] = &iomem_resource; - set_pci_bus_resources_arch_default(b); - return b; dev_create_file_err: -- cgit v1.1 From 681bf597215c62bd6f5ae1180a58a38997122b5b Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Mon, 13 Apr 2009 18:28:54 -0700 Subject: PCI: cleanup debug output resources Remove outputs for 0 sized resources and indicate prefetchability. Signed-off-by: Yinghai Lu Signed-off-by: Jesse Barnes --- drivers/pci/setup-bus.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 8d9da9d..a00f854 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -536,11 +536,13 @@ static void pci_bus_dump_res(struct pci_bus *bus) for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) { struct resource *res = bus->resource[i]; - if (!res) + if (!res || !res->end) continue; dev_printk(KERN_DEBUG, &bus->dev, "resource %d %s %pR\n", i, - (res->flags & IORESOURCE_IO) ? "io: " : "mem:", res); + (res->flags & IORESOURCE_IO) ? "io: " : + ((res->flags & IORESOURCE_PREFETCH)? "pref mem":"mem:"), + res); } } -- cgit v1.1 From cffb2fafb726c898fec1c5ae33717741f94fda83 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Fri, 10 Apr 2009 15:17:50 -0700 Subject: docbooks: add/fix PCI kernel-doc Add drivers/pci/*.c source files to DocBook/kernel-api.tmpl and update those pci/*.c source files that need kernel-doc fixes. Signed-off-by: Randy Dunlap Signed-off-by: Jesse Barnes --- drivers/pci/access.c | 4 ++-- drivers/pci/htirq.c | 1 + drivers/pci/pci-sysfs.c | 12 ++++++++---- drivers/pci/slot.c | 4 ++-- 4 files changed, 13 insertions(+), 8 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/access.c b/drivers/pci/access.c index 64dd7df..0f37065 100644 --- a/drivers/pci/access.c +++ b/drivers/pci/access.c @@ -87,8 +87,8 @@ EXPORT_SYMBOL(pci_read_vpd); * pci_write_vpd - Write entry to Vital Product Data * @dev: pci device struct * @pos: offset in vpd space - * @count: number of bytes to read - * @val: value to write + * @count: number of bytes to write + * @buf: buffer containing write data * */ ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf) diff --git a/drivers/pci/htirq.c b/drivers/pci/htirq.c index bf7d6ce..6808d83 100644 --- a/drivers/pci/htirq.c +++ b/drivers/pci/htirq.c @@ -158,6 +158,7 @@ int ht_create_irq(struct pci_dev *dev, int idx) /** * ht_destroy_irq - destroy an irq created with ht_create_irq + * @irq: irq to be destroyed * * This reverses ht_create_irq removing the specified irq from * existence. The irq should be free before this happens. diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index a7eb1b4..85ebd02 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -492,6 +492,7 @@ write_vpd_attr(struct kobject *kobj, struct bin_attribute *bin_attr, /** * pci_read_legacy_io - read byte(s) from legacy I/O port space * @kobj: kobject corresponding to file to read from + * @bin_attr: struct bin_attribute for this file * @buf: buffer to store results * @off: offset into legacy I/O port space * @count: number of bytes to read @@ -517,6 +518,7 @@ pci_read_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr, /** * pci_write_legacy_io - write byte(s) to legacy I/O port space * @kobj: kobject corresponding to file to read from + * @bin_attr: struct bin_attribute for this file * @buf: buffer containing value to be written * @off: offset into legacy I/O port space * @count: number of bytes to write @@ -733,9 +735,9 @@ pci_mmap_resource_wc(struct kobject *kobj, struct bin_attribute *attr, /** * pci_remove_resource_files - cleanup resource files - * @dev: dev to cleanup + * @pdev: dev to cleanup * - * If we created resource files for @dev, remove them from sysfs and + * If we created resource files for @pdev, remove them from sysfs and * free their resources. */ static void @@ -793,9 +795,9 @@ static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine) /** * pci_create_resource_files - create resource files in sysfs for @dev - * @dev: dev in question + * @pdev: dev in question * - * Walk the resources in @dev creating files for each resource available. + * Walk the resources in @pdev creating files for each resource available. */ static int pci_create_resource_files(struct pci_dev *pdev) { @@ -829,6 +831,7 @@ void __weak pci_remove_resource_files(struct pci_dev *dev) { return; } /** * pci_write_rom - used to enable access to the PCI ROM display * @kobj: kernel object handle + * @bin_attr: struct bin_attribute for this file * @buf: user input * @off: file offset * @count: number of byte in input @@ -852,6 +855,7 @@ pci_write_rom(struct kobject *kobj, struct bin_attribute *bin_attr, /** * pci_read_rom - read a PCI ROM * @kobj: kernel object handle + * @bin_attr: struct bin_attribute for this file * @buf: where to put the data we read from the ROM * @off: file offset * @count: number of bytes to read diff --git a/drivers/pci/slot.c b/drivers/pci/slot.c index 2118944..fe95ce2 100644 --- a/drivers/pci/slot.c +++ b/drivers/pci/slot.c @@ -264,8 +264,8 @@ EXPORT_SYMBOL_GPL(pci_create_slot); /** * pci_renumber_slot - update %struct pci_slot -> number - * @slot - %struct pci_slot to update - * @slot_nr - new number for slot + * @slot: &struct pci_slot to update + * @slot_nr: new number for slot * * The primary purpose of this interface is to allow callers who earlier * created a placeholder slot in pci_create_slot() by passing a -1 as -- cgit v1.1 From 1b6b8ce2ac372ea1f2065b89228ede105eb68dc5 Mon Sep 17 00:00:00 2001 From: Yu Zhao Date: Thu, 9 Apr 2009 14:57:39 +0800 Subject: PCI: only save/restore existent registers in the PCIe capability PCIe 1.1 base neither requires the endpoint to implement the entire PCIe capability structure nor specifies default values of registers that are not implemented by the device. So we only save and restore registers that must be implemented by different device types if the device PCIe capability version is 1. PCIe 1.1 Capability Structure Expansion ECN and PCIe 2.0 requires all registers in the PCIe capability to be either implemented or hardwired to 0. Their PCIe capability version is 2. Signed-off-by: Yu Zhao Signed-off-by: Jesse Barnes --- drivers/pci/pci.c | 70 ++++++++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 56 insertions(+), 14 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 16fd0d4..34bf0fd 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -681,11 +681,34 @@ EXPORT_SYMBOL(pci_choose_state); #define PCI_EXP_SAVE_REGS 7 +#define pcie_cap_has_devctl(type, flags) 1 +#define pcie_cap_has_lnkctl(type, flags) \ + ((flags & PCI_EXP_FLAGS_VERS) > 1 || \ + (type == PCI_EXP_TYPE_ROOT_PORT || \ + type == PCI_EXP_TYPE_ENDPOINT || \ + type == PCI_EXP_TYPE_LEG_END)) +#define pcie_cap_has_sltctl(type, flags) \ + ((flags & PCI_EXP_FLAGS_VERS) > 1 || \ + ((type == PCI_EXP_TYPE_ROOT_PORT) || \ + (type == PCI_EXP_TYPE_DOWNSTREAM && \ + (flags & PCI_EXP_FLAGS_SLOT)))) +#define pcie_cap_has_rtctl(type, flags) \ + ((flags & PCI_EXP_FLAGS_VERS) > 1 || \ + (type == PCI_EXP_TYPE_ROOT_PORT || \ + type == PCI_EXP_TYPE_RC_EC)) +#define pcie_cap_has_devctl2(type, flags) \ + ((flags & PCI_EXP_FLAGS_VERS) > 1) +#define pcie_cap_has_lnkctl2(type, flags) \ + ((flags & PCI_EXP_FLAGS_VERS) > 1) +#define pcie_cap_has_sltctl2(type, flags) \ + ((flags & PCI_EXP_FLAGS_VERS) > 1) + static int pci_save_pcie_state(struct pci_dev *dev) { int pos, i = 0; struct pci_cap_saved_state *save_state; u16 *cap; + u16 flags; pos = pci_find_capability(dev, PCI_CAP_ID_EXP); if (pos <= 0) @@ -698,13 +721,22 @@ static int pci_save_pcie_state(struct pci_dev *dev) } cap = (u16 *)&save_state->data[0]; - pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &cap[i++]); - pci_read_config_word(dev, pos + PCI_EXP_LNKCTL, &cap[i++]); - pci_read_config_word(dev, pos + PCI_EXP_SLTCTL, &cap[i++]); - pci_read_config_word(dev, pos + PCI_EXP_RTCTL, &cap[i++]); - pci_read_config_word(dev, pos + PCI_EXP_DEVCTL2, &cap[i++]); - pci_read_config_word(dev, pos + PCI_EXP_LNKCTL2, &cap[i++]); - pci_read_config_word(dev, pos + PCI_EXP_SLTCTL2, &cap[i++]); + pci_read_config_word(dev, pos + PCI_EXP_FLAGS, &flags); + + if (pcie_cap_has_devctl(dev->pcie_type, flags)) + pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &cap[i++]); + if (pcie_cap_has_lnkctl(dev->pcie_type, flags)) + pci_read_config_word(dev, pos + PCI_EXP_LNKCTL, &cap[i++]); + if (pcie_cap_has_sltctl(dev->pcie_type, flags)) + pci_read_config_word(dev, pos + PCI_EXP_SLTCTL, &cap[i++]); + if (pcie_cap_has_rtctl(dev->pcie_type, flags)) + pci_read_config_word(dev, pos + PCI_EXP_RTCTL, &cap[i++]); + if (pcie_cap_has_devctl2(dev->pcie_type, flags)) + pci_read_config_word(dev, pos + PCI_EXP_DEVCTL2, &cap[i++]); + if (pcie_cap_has_lnkctl2(dev->pcie_type, flags)) + pci_read_config_word(dev, pos + PCI_EXP_LNKCTL2, &cap[i++]); + if (pcie_cap_has_sltctl2(dev->pcie_type, flags)) + pci_read_config_word(dev, pos + PCI_EXP_SLTCTL2, &cap[i++]); return 0; } @@ -714,6 +746,7 @@ static void pci_restore_pcie_state(struct pci_dev *dev) int i = 0, pos; struct pci_cap_saved_state *save_state; u16 *cap; + u16 flags; save_state = pci_find_saved_cap(dev, PCI_CAP_ID_EXP); pos = pci_find_capability(dev, PCI_CAP_ID_EXP); @@ -721,13 +754,22 @@ static void pci_restore_pcie_state(struct pci_dev *dev) return; cap = (u16 *)&save_state->data[0]; - pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, cap[i++]); - pci_write_config_word(dev, pos + PCI_EXP_LNKCTL, cap[i++]); - pci_write_config_word(dev, pos + PCI_EXP_SLTCTL, cap[i++]); - pci_write_config_word(dev, pos + PCI_EXP_RTCTL, cap[i++]); - pci_write_config_word(dev, pos + PCI_EXP_DEVCTL2, cap[i++]); - pci_write_config_word(dev, pos + PCI_EXP_LNKCTL2, cap[i++]); - pci_write_config_word(dev, pos + PCI_EXP_SLTCTL2, cap[i++]); + pci_read_config_word(dev, pos + PCI_EXP_FLAGS, &flags); + + if (pcie_cap_has_devctl(dev->pcie_type, flags)) + pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, cap[i++]); + if (pcie_cap_has_lnkctl(dev->pcie_type, flags)) + pci_write_config_word(dev, pos + PCI_EXP_LNKCTL, cap[i++]); + if (pcie_cap_has_sltctl(dev->pcie_type, flags)) + pci_write_config_word(dev, pos + PCI_EXP_SLTCTL, cap[i++]); + if (pcie_cap_has_rtctl(dev->pcie_type, flags)) + pci_write_config_word(dev, pos + PCI_EXP_RTCTL, cap[i++]); + if (pcie_cap_has_devctl2(dev->pcie_type, flags)) + pci_write_config_word(dev, pos + PCI_EXP_DEVCTL2, cap[i++]); + if (pcie_cap_has_lnkctl2(dev->pcie_type, flags)) + pci_write_config_word(dev, pos + PCI_EXP_LNKCTL2, cap[i++]); + if (pcie_cap_has_sltctl2(dev->pcie_type, flags)) + pci_write_config_word(dev, pos + PCI_EXP_SLTCTL2, cap[i++]); } -- cgit v1.1 From 029091df01116aff8dea89ce96a0a2534401803a Mon Sep 17 00:00:00 2001 From: "Zhang, Yanmin" Date: Thu, 30 Apr 2009 14:48:29 +0800 Subject: PCI: Fix pci-e port driver slot_reset bad default return value When an upstream port reports an AER error to root port, kernel starts error recovery procedures. The default return value of function pcie_portdrv_slot_reset is PCI_ERS_RESULT_NONE. If all port service drivers of the downstream port under the upstream port have no slot_reset method in pci_error_handlers, AER recovery would stop without resume. Below patch against 2.6.30-rc3 fixes it. Signed-off-by: Zhang Yanmin Signed-off-by: Jesse Barnes --- drivers/pci/pcie/aer/aerdrv.h | 3 +++ drivers/pci/pcie/portdrv_pci.c | 2 +- 2 files changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/pci') diff --git a/drivers/pci/pcie/aer/aerdrv.h b/drivers/pci/pcie/aer/aerdrv.h index c7ad68b..aa14482 100644 --- a/drivers/pci/pcie/aer/aerdrv.h +++ b/drivers/pci/pcie/aer/aerdrv.h @@ -95,6 +95,9 @@ struct aer_broadcast_data { static inline pci_ers_result_t merge_result(enum pci_ers_result orig, enum pci_ers_result new) { + if (new == PCI_ERS_RESULT_NONE) + return orig; + switch (orig) { case PCI_ERS_RESULT_CAN_RECOVER: case PCI_ERS_RESULT_RECOVERED: diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index b924e24..091ce70 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -200,7 +200,7 @@ static int slot_reset_iter(struct device *device, void *data) static pci_ers_result_t pcie_portdrv_slot_reset(struct pci_dev *dev) { - pci_ers_result_t status = PCI_ERS_RESULT_NONE; + pci_ers_result_t status = PCI_ERS_RESULT_RECOVERED; int retval; /* If fatal, restore cfg space for possible link reset at upstream */ -- cgit v1.1 From fd18de50b9e7965f93d231e7390436fb8900c0e6 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Sun, 10 May 2009 23:57:41 +0100 Subject: intel-iommu: PAE memory corruption fix PAGE_MASK is 0xFFFFF000 on i386 -- even with PAE. So it's not sufficient to ensure that you use phys_addr_t or uint64_t everywhere you handle physical addresses -- you also have to avoid using the construct 'addr & PAGE_MASK', because that will strip the high 32 bits of the address. This patch avoids that problem by using PHYSICAL_PAGE_MASK instead of PAGE_MASK where appropriate. It leaves '& PAGE_MASK' in a few instances that don't matter -- where it's being used on the virtual bus addresses we're dishing out, which are 32-bit anyway. Since PHYSICAL_PAGE_MASK is not present on other architectures, we have to define it (to PAGE_MASK) if it's not already defined. Maybe it would be better just to fix PAGE_MASK for i386/PAE? Signed-off-by: David Woodhouse Signed-off-by: Linus Torvalds --- drivers/pci/intel-iommu.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c index 001b328..a563fbe 100644 --- a/drivers/pci/intel-iommu.c +++ b/drivers/pci/intel-iommu.c @@ -59,6 +59,10 @@ #define DMA_32BIT_PFN IOVA_PFN(DMA_BIT_MASK(32)) #define DMA_64BIT_PFN IOVA_PFN(DMA_BIT_MASK(64)) +#ifndef PHYSICAL_PAGE_MASK +#define PHYSICAL_PAGE_MASK PAGE_MASK +#endif + /* global iommu list, set NULL for ignored DMAR units */ static struct intel_iommu **g_iommus; @@ -1216,7 +1220,7 @@ static void dmar_init_reserved_ranges(void) if (!r->flags || !(r->flags & IORESOURCE_MEM)) continue; addr = r->start; - addr &= PAGE_MASK; + addr &= PHYSICAL_PAGE_MASK; size = r->end - addr; size = PAGE_ALIGN(size); iova = reserve_iova(&reserved_iova_list, IOVA_PFN(addr), @@ -2173,7 +2177,8 @@ static dma_addr_t __intel_map_single(struct device *hwdev, phys_addr_t paddr, * is not a big problem */ ret = domain_page_mapping(domain, start_paddr, - ((u64)paddr) & PAGE_MASK, size, prot); + ((u64)paddr) & PHYSICAL_PAGE_MASK, + size, prot); if (ret) goto error; @@ -2463,8 +2468,8 @@ static int intel_map_sg(struct device *hwdev, struct scatterlist *sglist, int ne addr = page_to_phys(sg_page(sg)) + sg->offset; size = aligned_size((u64)addr, sg->length); ret = domain_page_mapping(domain, start_addr + offset, - ((u64)addr) & PAGE_MASK, - size, prot); + ((u64)addr) & PHYSICAL_PAGE_MASK, + size, prot); if (ret) { /* clear the page */ dma_pte_clear_range(domain, start_addr, -- cgit v1.1 From 8d181018532dd709ec1f789e374cda92d7b01ce1 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Fri, 8 May 2009 07:13:33 -0600 Subject: PCI MSI: Fix MSI-X with NIU cards The NIU device refuses to allow accesses to MSI-X registers before MSI-X is enabled. This patch fixes the problem by moving the read of the mask register to after MSI-X is enabled. Reported-by: David S. Miller Tested-by: David S. Miller Reviewed-by: David S. Miller Signed-off-by: Matthew Wilcox Signed-off-by: Jesse Barnes --- drivers/pci/msi.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 6f2e629..3627732 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -455,8 +455,6 @@ static int msix_capability_init(struct pci_dev *dev, entry->msi_attrib.default_irq = dev->irq; entry->msi_attrib.pos = pos; entry->mask_base = base; - entry->masked = readl(base + j * PCI_MSIX_ENTRY_SIZE + - PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET); msix_mask_irq(entry, 1); list_add_tail(&entry->list, &dev->msi_list); @@ -493,6 +491,12 @@ static int msix_capability_init(struct pci_dev *dev, msix_set_enable(dev, 1); dev->msix_enabled = 1; + list_for_each_entry(entry, &dev->msi_list, list) { + int vector = entry->msi_attrib.entry_nr; + entry->masked = readl(base + vector * PCI_MSIX_ENTRY_SIZE + + PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET); + } + return 0; } -- cgit v1.1