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author | Andrew Patterson <andrew.patterson@hp.com> | 2008-11-10 15:30:50 -0700 |
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committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-01-07 11:12:28 -0800 |
commit | 0ef5f8f6159e44b4faa997be08d1a3bcbf44ad08 (patch) | |
tree | 0753c27a1eb2f5802501e60d575f01fe6edccc2f /drivers/pci | |
parent | 990a7ac5645883a833a11b900bb6f25b65dea65b (diff) | |
download | op-kernel-dev-0ef5f8f6159e44b4faa997be08d1a3bcbf44ad08.zip op-kernel-dev-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 'drivers/pci')
-rw-r--r-- | drivers/pci/pci.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 3c2fa2f..48fa860 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -2084,6 +2084,19 @@ static void __devinit pci_no_domains(void) #endif } +/** + * pci_ext_cfg_enabled - can we access extended PCI config space? + * @dev: The PCI device of the root bridge. + * + * Returns 1 if we can access PCI extended config space (offsets + * greater than 0xff). This is the default implementation. Architecture + * implementations can override this. + */ +int __attribute__ ((weak)) pci_ext_cfg_avail(struct pci_dev *dev) +{ + return 1; +} + static int __devinit pci_init(void) { struct pci_dev *dev = NULL; |