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| author | Andrew Patterson <andrew.patterson@hp.com> | 2008-11-10 15:30:50 -0700 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-01-07 11:12:28 -0800 |
| commit | 0ef5f8f6159e44b4faa997be08d1a3bcbf44ad08 (patch) | |
| tree | 0753c27a1eb2f5802501e60d575f01fe6edccc2f /arch/x86/pci/common.c | |
| parent | 990a7ac5645883a833a11b900bb6f25b65dea65b (diff) | |
| download | linux-0ef5f8f6159e44b4faa997be08d1a3bcbf44ad08.tar.gz | |
ACPI/PCI: PCI extended config _OSC support called when root bridge added
The _OSC capability OSC_EXT_PCI_CONFIG_SUPPORT is set when the root
bridge is added with pci_acpi_osc_support() if we can access PCI
extended config space.
This adds the function pci_ext_cfg_avail which returns true if we can
access PCI extended config space (offset greater than 0xff). It
currently only returns false if arch=x86 and raw_pci_ext_ops is not set
(which might happen if pci=nommcfg is set on the kernel command-line).
Signed-off-by: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'arch/x86/pci/common.c')
| -rw-r--r-- | arch/x86/pci/common.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c index 62ddb73e09ed..9ab8509f7b15 100644 --- a/arch/x86/pci/common.c +++ b/arch/x86/pci/common.c @@ -562,6 +562,14 @@ void pcibios_disable_device (struct pci_dev *dev) pcibios_disable_irq(dev); } +int pci_ext_cfg_avail(struct pci_dev *dev) +{ + if (raw_pci_ext_ops) + return 1; + else + return 0; +} + struct pci_bus * __devinit pci_scan_bus_on_node(int busno, struct pci_ops *ops, int node) { struct pci_bus *bus = NULL; |