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--- linux-2.6.20/arch/ia64/kernel/quirks.c 1969-12-31 19:00:00.000000000 -0500
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+++ linux-2.6.20_fix/arch/ia64/kernel/quirks.c 2007-02-13 13:56:34.000000000 -0500
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@@ -0,0 +1,45 @@
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+/*
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+ * This file contains work-arounds for ia64 platform bugs.
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+ */
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+#include <linux/pci.h>
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+
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+/*
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+ * quirk_intel_ide_controller: If an ide/ata controller is
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+ * at legacy mode, BIOS might initiates BAR(bar 0~3 and 5)
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+ * with incorrect value. This quirk will reset the incorrect
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+ * value to 0.
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+ */
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+static void __devinit quirk_intel_ide_controller(struct pci_dev *dev)
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+{
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+ unsigned int pos;
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+ struct resource *res;
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+ int fixed = 0;
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+ u8 tmp8;
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+
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+ if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
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+ return;
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+
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+ /* TODO: What if one channel is in native mode ... */
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+ pci_read_config_byte(dev, PCI_CLASS_PROG, &tmp8);
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+ if ((tmp8 & 5) == 5)
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+ return;
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+
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+ for( pos = 0; pos < 6; pos ++ ) {
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+ res = &dev->resource[pos];
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+ if (!(res->flags & (IORESOURCE_IO | IORESOURCE_MEM)))
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+ continue;
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+
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+ if (!res->start && res->end) {
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+ res->start = res->end = 0;
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+ res->flags = 0;
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+ fixed = 1;
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+ }
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+ }
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+ if (fixed)
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+ printk(KERN_WARNING
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+ "PCI device %s: BIOS resource configuration fixed.\n",
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+ pci_name(dev));
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+}
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+
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+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_11, quirk_intel_ide_controller);
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+
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--- linux-2.6.21.noarch/arch/ia64/kernel/Makefile~ 2007-05-27 23:23:36.000000000 -0400
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+++ linux-2.6.21.noarch/arch/ia64/kernel/Makefile 2007-05-27 23:23:48.000000000 -0400
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@@ -33,6 +33,7 @@ obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
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obj-$(CONFIG_IA64_UNCACHED_ALLOCATOR) += uncached.o
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obj-$(CONFIG_AUDIT) += audit.o
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obj-$(CONFIG_PCI_MSI) += msi_ia64.o
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+obj-$(CONFIG_PCI) += quirks.o
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mca_recovery-y += mca_drv.o mca_drv_asm.o
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obj-$(CONFIG_IA64_MC_ERR_INJECT)+= err_inject.o
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| 58 |
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