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PCI updates for v3.19:

Browse source 
Enumeration
     - Scan all device numbers on NEC as well as Stratus (Charlotte Richardson)
 
   Resource management
     - Handle read-only BARs on AMD CS553x devices (Myron Stowe)
 
   Synopsys DesignWare
     - Reject MSI-X IRQs (Lucas Stach)
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Merge tag 'pci-v3.19-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:
 "Enumeration
    - Scan all device numbers on NEC as well as Stratus (Charlotte Richardson)

  Resource management
    - Handle read-only BARs on AMD CS553x devices (Myron Stowe)

  Synopsys DesignWare
    - Reject MSI-X IRQs (Lucas Stach)"

* tag 'pci-v3.19-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: Handle read-only BARs on AMD CS553x devices
  PCI: Add NEC variants to Stratus ftServer PCIe DMI check
  PCI: designware: Reject MSI-X IRQs
This commit is contained in:
Linus Torvalds 2015-02-05 10:23:12 -08:00
commit f3c2352df1
3 changed files with 56 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
arch/x86/pci/common.c
View file

@ -448,6 +448,22 @@ static const struct dmi_system_id pciprobe_dmi_table[] __initconst = {
DMI_MATCH(DMI_PRODUCT_NAME, "ftServer"),
},
},
{
.callback = set_scan_all,
.ident = "Stratus/NEC ftServer",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "NEC"),
DMI_MATCH(DMI_PRODUCT_NAME, "Express5800/R32"),
},
},
{
.callback = set_scan_all,
.ident = "Stratus/NEC ftServer",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "NEC"),
DMI_MATCH(DMI_PRODUCT_NAME, "Express5800/R31"),
},
},
{}
};

3
drivers/pci/host/pcie-designware.c
View file

@ -283,6 +283,9 @@ static int dw_msi_setup_irq(struct msi_controller *chip, struct pci_dev *pdev,
struct msi_msg msg;
struct pcie_port *pp = sys_to_pcie(pdev->bus->sysdata);
if (desc->msi_attrib.is_msix)
return -EINVAL;
irq = assign_irq(1, desc, &pos);
if (irq < 0)
return irq;

40
drivers/pci/quirks.c
View file

@ -324,18 +324,52 @@ static void quirk_s3_64M(struct pci_dev *dev)
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M);
static void quirk_io(struct pci_dev *dev, int pos, unsigned size,
const char *name)
{
u32 region;
struct pci_bus_region bus_region;
struct resource *res = dev->resource + pos;
pci_read_config_dword(dev, PCI_BASE_ADDRESS_0 + (pos << 2), &region);
if (!region)
return;
res->name = pci_name(dev);
res->flags = region & ~PCI_BASE_ADDRESS_IO_MASK;
res->flags |=
(IORESOURCE_IO | IORESOURCE_PCI_FIXED | IORESOURCE_SIZEALIGN);
region &= ~(size - 1);
/* Convert from PCI bus to resource space */
bus_region.start = region;
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",
name, PCI_BASE_ADDRESS_0 + (pos << 2), res);
}
/*
* Some CS5536 BIOSes (for example, the Soekris NET5501 board w/ comBIOS
* ver. 1.33 20070103) don't set the correct ISA PCI region header info.
* BAR0 should be 8 bytes; instead, it may be set to something like 8k
* (which conflicts w/ BAR1's memory range).
*
* CS553x's ISA PCI BARs may also be read-only (ref:
* https://bugzilla.kernel.org/show_bug.cgi?id=85991 - Comment #4 forward).
*/
static void quirk_cs5536_vsa(struct pci_dev *dev)
{
static char *name = "CS5536 ISA bridge";
if (pci_resource_len(dev, 0) != 8) {
struct resource *res = &dev->resource[0];
res->end = res->start + 8 - 1;
dev_info(&dev->dev, "CS5536 ISA bridge bug detected (incorrect header); workaround applied\n");
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",
name);
}
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa);