patch-2.4.0-test6 linux/drivers/pci/quirks.c

• Lines: 44
• Date: Fri Aug 4 11:23:37 2000
• Orig file: v2.4.0-test5/linux/drivers/pci/quirks.c
• Orig date: Fri Jun 23 21:55:09 2000

diff -u --recursive --new-file v2.4.0-test5/linux/drivers/pci/quirks.c linux/drivers/pci/quirks.c
@@ -9,7 +9,7 @@
  *
  *  The bridge optimization stuff has been removed. If you really
  *  have a silly BIOS which is unable to set your host bridge right,
- *  use the PowerTweak utility (see http://linux.powertweak.com/).
+ *  use the PowerTweak utility (see http://powertweak.sourceforge.net).
  */
 
 #include <linux/types.h>
@@ -223,6 +223,18 @@
 }
 
 /*
+ * VIA VT82C598 has its device ID settable and many BIOSes
+ * set it to the ID of VT82C597 for backward compatibility.
+ * We need to switch it off to be able to recognize the real
+ * type of the chip.
+ */
+static void __init quirk_vt82c598_id(struct pci_dev *dev)
+{
+	pci_write_config_byte(dev, 0xfc, 0);
+	pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device);
+}
+
+/*
  *  The main table of quirks.
  */
 
@@ -232,7 +244,6 @@
 	/*
 	 * Its not totally clear which chipsets are the problematic ones
 	 * We know 82C586 and 82C596 variants are affected.
-	 *
 	 */
 	{ PCI_FIXUP_FINAL,	PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C586_0,	quirk_isa_dma_hangs },
 	{ PCI_FIXUP_FINAL,	PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C596,	quirk_isa_dma_hangs },
@@ -251,6 +262,7 @@
 	{ PCI_FIXUP_FINAL,	PCI_VENDOR_ID_INTEL, 	PCI_DEVICE_ID_INTEL_82443BX_2, 	quirk_natoma },
 	{ PCI_FIXUP_FINAL,	PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_5597,		quirk_nopcipci },
 	{ PCI_FIXUP_FINAL,	PCI_VENDOR_ID_SI,	PCI_DEVICE_ID_SI_496,		quirk_nopcipci },
+	{ PCI_FIXUP_HEADER,	PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C597_0,	quirk_vt82c598_id },
 	{ PCI_FIXUP_HEADER,	PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C586_3,	quirk_vt82c586_acpi },
 	{ PCI_FIXUP_HEADER,	PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C686_4,	quirk_vt82c686_acpi },
 	{ PCI_FIXUP_HEADER,	PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82371AB_3,	quirk_piix4_acpi },