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-rw-r--r--drivers/pci/quirks.c59
1 files changed, 3 insertions, 56 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 5b4483811691..9ca9b9bf6160 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -797,56 +797,6 @@ static void __init quirk_mediagx_master(struct pci_dev *dev)
797DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master ); 797DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master );
798 798
799/* 799/*
800 * As per PCI spec, ignore base address registers 0-3 of the IDE controllers
801 * running in Compatible mode (bits 0 and 2 in the ProgIf for primary and
802 * secondary channels respectively). If the device reports Compatible mode
803 * but does use BAR0-3 for address decoding, we assume that firmware has
804 * programmed these BARs with standard values (0x1f0,0x3f4 and 0x170,0x374).
805 * Exceptions (if they exist) must be handled in chip/architecture specific
806 * fixups.
807 *
808 * Note: for non x86 people. You may need an arch specific quirk to handle
809 * moving IDE devices to native mode as well. Some plug in card devices power
810 * up in compatible mode and assume the BIOS will adjust them.
811 *
812 * Q: should we load the 0x1f0,0x3f4 into the registers or zap them as
813 * we do now ? We don't want is pci_enable_device to come along
814 * and assign new resources. Both approaches work for that.
815 */
816static void __devinit quirk_ide_bases(struct pci_dev *dev)
817{
818 struct resource *res;
819 int first_bar = 2, last_bar = 0;
820
821 if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
822 return;
823
824 res = &dev->resource[0];
825
826 /* primary channel: ProgIf bit 0, BAR0, BAR1 */
827 if (!(dev->class & 1) && (res[0].flags || res[1].flags)) {
828 res[0].start = res[0].end = res[0].flags = 0;
829 res[1].start = res[1].end = res[1].flags = 0;
830 first_bar = 0;
831 last_bar = 1;
832 }
833
834 /* secondary channel: ProgIf bit 2, BAR2, BAR3 */
835 if (!(dev->class & 4) && (res[2].flags || res[3].flags)) {
836 res[2].start = res[2].end = res[2].flags = 0;
837 res[3].start = res[3].end = res[3].flags = 0;
838 last_bar = 3;
839 }
840
841 if (!last_bar)
842 return;
843
844 printk(KERN_INFO "PCI: Ignoring BAR%d-%d of IDE controller %s\n",
845 first_bar, last_bar, pci_name(dev));
846}
847DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_ide_bases);
848
849/*
850 * Ensure C0 rev restreaming is off. This is normally done by 800 * Ensure C0 rev restreaming is off. This is normally done by
851 * the BIOS but in the odd case it is not the results are corruption 801 * the BIOS but in the odd case it is not the results are corruption
852 * hence the presence of a Linux check 802 * hence the presence of a Linux check
@@ -880,11 +830,10 @@ static void __devinit quirk_svwks_csb5ide(struct pci_dev *pdev)
880 prog &= ~5; 830 prog &= ~5;
881 pdev->class &= ~5; 831 pdev->class &= ~5;
882 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog); 832 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
883 /* need to re-assign BARs for compat mode */ 833 /* PCI layer will sort out resources */
884 quirk_ide_bases(pdev);
885 } 834 }
886} 835}
887DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide ); 836DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide );
888 837
889/* 838/*
890 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same 839 * Intel 82801CAM ICH3-M datasheet says IDE modes must be the same
@@ -900,11 +849,9 @@ static void __init quirk_ide_samemode(struct pci_dev *pdev)
900 prog &= ~5; 849 prog &= ~5;
901 pdev->class &= ~5; 850 pdev->class &= ~5;
902 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog); 851 pci_write_config_byte(pdev, PCI_CLASS_PROG, prog);
903 /* need to re-assign BARs for compat mode */
904 quirk_ide_bases(pdev);
905 } 852 }
906} 853}
907DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode); 854DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode);
908 855
909/* This was originally an Alpha specific thing, but it really fits here. 856/* This was originally an Alpha specific thing, but it really fits here.
910 * The i82375 PCI/EISA bridge appears as non-classified. Fix that. 857 * The i82375 PCI/EISA bridge appears as non-classified. Fix that.