diff options
| -rw-r--r-- | arch/x86/pci/fixup.c | 17 | ||||
| -rw-r--r-- | drivers/pci/probe.c | 11 | ||||
| -rw-r--r-- | include/linux/pci.h | 1 |
3 files changed, 28 insertions, 1 deletions
diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c index a5ef5f551373..b60b2abd480c 100644 --- a/arch/x86/pci/fixup.c +++ b/arch/x86/pci/fixup.c @@ -493,3 +493,20 @@ static void __devinit pci_siemens_interrupt_controller(struct pci_dev *dev) } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SIEMENS, 0x0015, pci_siemens_interrupt_controller); + +/* + * Regular PCI devices have 256 bytes, but AMD Family 10h Opteron ext config + * have 4096 bytes. Even if the device is capable, that doesn't mean we can + * access it. Maybe we don't have a way to generate extended config space + * accesses. So check it + */ +static void fam10h_pci_cfg_space_size(struct pci_dev *dev) +{ + dev->cfg_size = pci_cfg_space_size_ext(dev, 0); +} + +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x1200, fam10h_pci_cfg_space_size); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x1201, fam10h_pci_cfg_space_size); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x1202, fam10h_pci_cfg_space_size); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x1203, fam10h_pci_cfg_space_size); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x1204, fam10h_pci_cfg_space_size); diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index f991359f0c36..a8efdaef1870 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -842,11 +842,14 @@ static void set_pcie_port_type(struct pci_dev *pdev) * reading the dword at 0x100 which must either be 0 or a valid extended * capability header. */ -int pci_cfg_space_size(struct pci_dev *dev) +int pci_cfg_space_size_ext(struct pci_dev *dev, unsigned check_exp_pcix) { int pos; u32 status; + if (!check_exp_pcix) + goto skip; + pos = pci_find_capability(dev, PCI_CAP_ID_EXP); if (!pos) { pos = pci_find_capability(dev, PCI_CAP_ID_PCIX); @@ -858,6 +861,7 @@ int pci_cfg_space_size(struct pci_dev *dev) goto fail; } + skip: if (pci_read_config_dword(dev, 256, &status) != PCIBIOS_SUCCESSFUL) goto fail; if (status == 0xffffffff) @@ -869,6 +873,11 @@ int pci_cfg_space_size(struct pci_dev *dev) return PCI_CFG_SPACE_SIZE; } +int pci_cfg_space_size(struct pci_dev *dev) +{ + return pci_cfg_space_size_ext(dev, 1); +} + static void pci_release_bus_bridge_dev(struct device *dev) { kfree(dev); diff --git a/include/linux/pci.h b/include/linux/pci.h index 43a4f9cae67d..2b8f74522f8f 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -666,6 +666,7 @@ int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, void pci_walk_bus(struct pci_bus *top, void (*cb)(struct pci_dev *, void *), void *userdata); +int pci_cfg_space_size_ext(struct pci_dev *dev, unsigned check_exp_pcix); int pci_cfg_space_size(struct pci_dev *dev); unsigned char pci_bus_max_busnr(struct pci_bus *bus); |