We've had this in Fedora since 2007/02/27
Can anyone recall why? and more importantly, why it isn't upstream?
Dave
--- linux-2.6.20/arch/ia64/kernel/quirks.c 1969-12-31 19:00:00.000000000
-0500
+++ linux-2.6.20_fix/arch/ia64/kernel/quirks.c 2007-02-13 13:56:34.000000000
-0500
@@ -0,0 +1,45 @@
+/*
+ * This file contains work-arounds for ia64 platform bugs.
+ */
+#include <linux/pci.h>
+
+/*
+ * quirk_intel_ide_controller: If an ide/ata controller is
+ * at legacy mode, BIOS might initiates BAR(bar 0~3 and 5)
+ * with incorrect value. This quirk will reset the incorrect
+ * value to 0.
+ */
+static void __devinit quirk_intel_ide_controller(struct pci_dev *dev)
+{
+ unsigned int pos;
+ struct resource *res;
+ int fixed = 0;
+ u8 tmp8;
+
+ if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
+ return;
+
+ /* TODO: What if one channel is in native mode ... */
+ pci_read_config_byte(dev, PCI_CLASS_PROG, &tmp8);
+ if ((tmp8 & 5) == 5)
+ return;
+
+ for( pos = 0; pos < 6; pos ++ ) {
+ res = &dev->resource[pos];
+ if (!(res->flags & (IORESOURCE_IO | IORESOURCE_MEM)))
+ continue;
+
+ if (!res->start && res->end) {
+ res->start = res->end = 0;
+ res->flags = 0;
+ fixed = 1;
+ }
+ }
+ if (fixed)
+ printk(KERN_WARNING
+ "PCI device %s: BIOS resource configuration fixed.\n",
+ pci_name(dev));
+}
+
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_11,
quirk_intel_ide_controller);
+
--- linux-2.6.21.noarch/arch/ia64/kernel/Makefile~ 2007-05-27
23:23:36.000000000 -0400
+++ linux-2.6.21.noarch/arch/ia64/kernel/Makefile 2007-05-27
23:23:48.000000000 -0400
@@ -33,6 +33,7 @@ obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
obj-$(CONFIG_IA64_UNCACHED_ALLOCATOR) += uncached.o
obj-$(CONFIG_AUDIT) += audit.o
obj-$(CONFIG_PCI_MSI) += msi_ia64.o
+obj-$(CONFIG_PCI) += quirks.o
mca_recovery-y += mca_drv.o mca_drv_asm.o
obj-$(CONFIG_IA64_MC_ERR_INJECT)+= err_inject.o
_______________________________________________
Fedora-kernel-list mailing list
Fedora-kernel-list@redhat.com
https://www.redhat.com/mailman/listinfo/fedora-kernel-list
