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| author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-10 05:41:42 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-10 05:41:42 +0300 |
| commit | 977127174a7dff52d17faeeb4c4949a54221881f (patch) | |
| tree | b05b9d18a1256d7ed97bdfb537213a8d70ccca57 /drivers/pci/quirks.c | |
| parent | 80c0531514516e43ae118ddf38424e06e5c3cb3c (diff) | |
| parent | 93b47684f60cf25e8cefe19a21d94aa0257fdf36 (diff) | |
| download | linux-977127174a7dff52d17faeeb4c4949a54221881f.tar.xz | |
Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6
Diffstat (limited to 'drivers/pci/quirks.c')
| -rw-r--r-- | drivers/pci/quirks.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index f28ebdd3958a..605f0df0bfba 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -1342,6 +1342,32 @@ void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) pci_do_fixups(dev, start, end); } +/* Enable 1k I/O space granularity on the Intel P64H2 */ +static void __devinit quirk_p64h2_1k_io(struct pci_dev *dev) +{ + u16 en1k; + u8 io_base_lo, io_limit_lo; + unsigned long base, limit; + struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES; + + pci_read_config_word(dev, 0x40, &en1k); + + if (en1k & 0x200) { + printk(KERN_INFO "PCI: Enable I/O Space to 1 KB Granularity\n"); + + pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo); + pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo); + base = (io_base_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8; + limit = (io_limit_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8; + + if (base <= limit) { + res->start = base; + res->end = limit + 0x3ff; + } + } +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io); + EXPORT_SYMBOL(pcie_mch_quirk); #ifdef CONFIG_HOTPLUG EXPORT_SYMBOL(pci_fixup_device); |