diff options
| author |   Jiang Liu <jiang.liu@huawei.com> | 2012-06-22 14:55:13 +0800 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2012-06-22 15:16:31 -0600 |
| commit | 9cf0105da5a315677d8f91043fb87fdade0d8b39 (patch) | |
| tree | 85519a44e3c8363bff3ec0f68e0a2fbeb3e75a2b /arch/x86/pci/mmconfig_32.c | |
| parent | x86/PCI: use RCU list to protect mmconfig list (diff) | |
| download | linux-dev-9cf0105da5a315677d8f91043fb87fdade0d8b39.tar.xz linux-dev-9cf0105da5a315677d8f91043fb87fdade0d8b39.zip | |
x86/PCI: introduce pci_mmcfg_arch_map()/pci_mmcfg_arch_unmap()
Introduce pci_mmcfg_arch_map()/pci_mmcfg_arch_unmap(), which will be used
when supporting PCI root bridge hotplug.
Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jiang Liu <liuj97@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'arch/x86/pci/mmconfig_32.c')
| -rw-r--r-- | arch/x86/pci/mmconfig_32.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/pci/mmconfig_32.c b/arch/x86/pci/mmconfig_32.c index 5dad04aa6b37..a22785deb50e 100644 --- a/arch/x86/pci/mmconfig_32.c +++ b/arch/x86/pci/mmconfig_32.c @@ -141,3 +141,18 @@ int __init pci_mmcfg_arch_init(void) void __init pci_mmcfg_arch_free(void) { } + +int __devinit pci_mmcfg_arch_map(struct pci_mmcfg_region *cfg) +{ + return 0; +} + +void pci_mmcfg_arch_unmap(struct pci_mmcfg_region *cfg) +{ + unsigned long flags; + + /* Invalidate the cached mmcfg map entry. */ + raw_spin_lock_irqsave(&pci_config_lock, flags); + mmcfg_last_accessed_device = 0; + raw_spin_unlock_irqrestore(&pci_config_lock, flags); +} |