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[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>
hifive-unleashed-5.1
Ivan Kokshaysky 2005-08-08 12:55:54 +04:00 committed by Linus Torvalds
parent db6778db7e
commit 6d85f29bb5
1 changed files with 19 additions and 0 deletions
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19
drivers/pci/quirks.c
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@ -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