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| author | Ivan Kokshaysky <ink@jurassic.park.msu.ru> | 2005-08-08 12:55:54 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-08-08 11:46:24 -0700 |
| commit | 6d85f29bb54235d2e184e7155dcd4de908324fe6 (patch) | |
| tree | 1ab80c4bb980fec383047e8e07a0fb8fa77b5994 /drivers/pci | |
| parent | db6778db7eb1d974e1ae0da326530f09c13585ac (diff) | |
| download | lwn-6d85f29bb54235d2e184e7155dcd4de908324fe6.tar.gz lwn-6d85f29bb54235d2e184e7155dcd4de908324fe6.zip | |
[PATCH] VIA VT8235 PCI quirk
Like many other southbridges from different manufacturers, VIA VT8235
chip has two non-standard BARs for power management and SMBus registers
(see the datasheet at http://www.via.com.tw).
This new quirk routine fixes boot problem with 2.6.13-rc2/rc6 kernels on
Targa Visionary 811 Athlon64 laptop, as reported by Mikael Pettersson
<mikpe@csd.uu.se>.
Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/quirks.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 8d0968bd527e..a9160ad16581 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -373,6 +373,25 @@ static void __devinit quirk_vt82c686_acpi(struct pci_dev *dev) } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi ); +/* + * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at + * 0x88 (128 bytes of power management registers) + * 0xd0 (16 bytes of SMB registers) + */ +static void __devinit quirk_vt8235_acpi(struct pci_dev *dev) +{ + u16 pm, smb; + + pci_read_config_word(dev, 0x88, &pm); + pm &= PCI_BASE_ADDRESS_IO_MASK; + quirk_io_region(dev, pm, 128, PCI_BRIDGE_RESOURCES); + + pci_read_config_word(dev, 0xd0, &smb); + smb &= PCI_BASE_ADDRESS_IO_MASK; + quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 1); +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi); + #ifdef CONFIG_X86_IO_APIC |