[PATCH] VIA VT8235 PCI quirk (6d85f29b) · Commits · 戴 / test

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>

drivers/pci/quirks.c

+19 −0

Original line number	Diff line number	Diff line
		@@ -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

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