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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-02-28 10:59:18 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-02-28 10:59:18 -0800 |
| commit | c7e15899d07c9813c1aa96b21699d2d9c8314c4b (patch) | |
| tree | 16e9b4dceddf1b4d1dad05588d700c70cf8fcb88 /drivers/pci | |
| parent | f6a0b5cd34d6e922cc7258c5429fb0f17508ceb6 (diff) | |
| parent | 78c06176466cbd1b3f0f67709d3023c40dbebcbd (diff) | |
| download | linux-c7e15899d07c9813c1aa96b21699d2d9c8314c4b.tar.bz2 | |
Merge branch 'x86-pci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-pci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Enable NMI on all cpus on UV
vgaarb: Add user selectability of the number of GPUS in a system
vgaarb: Fix VGA arbiter to accept PCI domains other than 0
x86, uv: Update UV arch to target Legacy VGA I/O correctly.
pci: Update pci_set_vga_state() to call arch functions
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pci.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 2b9ac9e594af..5b548aee9cbc 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -2754,6 +2754,23 @@ int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type) return 0; } +/* Some architectures require additional programming to enable VGA */ +static arch_set_vga_state_t arch_set_vga_state; + +void __init pci_register_set_vga_state(arch_set_vga_state_t func) +{ + arch_set_vga_state = func; /* NULL disables */ +} + +static int pci_set_vga_state_arch(struct pci_dev *dev, bool decode, + unsigned int command_bits, bool change_bridge) +{ + if (arch_set_vga_state) + return arch_set_vga_state(dev, decode, command_bits, + change_bridge); + return 0; +} + /** * pci_set_vga_state - set VGA decode state on device and parents if requested * @dev: the PCI device @@ -2767,9 +2784,15 @@ int pci_set_vga_state(struct pci_dev *dev, bool decode, struct pci_bus *bus; struct pci_dev *bridge; u16 cmd; + int rc; WARN_ON(command_bits & ~(PCI_COMMAND_IO|PCI_COMMAND_MEMORY)); + /* ARCH specific VGA enables */ + rc = pci_set_vga_state_arch(dev, decode, command_bits, change_bridge); + if (rc) + return rc; + pci_read_config_word(dev, PCI_COMMAND, &cmd); if (decode == true) cmd |= command_bits; @@ -2984,6 +3007,7 @@ EXPORT_SYMBOL(pcim_pin_device); EXPORT_SYMBOL(pci_disable_device); EXPORT_SYMBOL(pci_find_capability); EXPORT_SYMBOL(pci_bus_find_capability); +EXPORT_SYMBOL(pci_register_set_vga_state); EXPORT_SYMBOL(pci_release_regions); EXPORT_SYMBOL(pci_request_regions); EXPORT_SYMBOL(pci_request_regions_exclusive); @@ -3015,4 +3039,3 @@ EXPORT_SYMBOL(pci_target_state); EXPORT_SYMBOL(pci_prepare_to_sleep); EXPORT_SYMBOL(pci_back_from_sleep); EXPORT_SYMBOL_GPL(pci_set_pcie_reset_state); - |