devel/kernel/linux-2.6-ata-quirk.patch

--- 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
 
1	--- linux-2.6.20/arch/ia64/kernel/quirks.c 1969-12-31 19:00:00.000000000 -0500
2	+++ linux-2.6.20_fix/arch/ia64/kernel/quirks.c 2007-02-13 13:56:34.000000000 -0500
3	@@ -0,0 +1,45 @@
4	+/*
5	+ * This file contains work-arounds for ia64 platform bugs.
6	+ */
7	+#include <linux/pci.h>
8	+
9	+/*
10	+ * quirk_intel_ide_controller: If an ide/ata controller is
11	+ * at legacy mode, BIOS might initiates BAR(bar 0~3 and 5)
12	+ * with incorrect value. This quirk will reset the incorrect
13	+ * value to 0.
14	+ */
15	+static void __devinit quirk_intel_ide_controller(struct pci_dev *dev)
16	+{
17	+ unsigned int pos;
18	+ struct resource *res;
19	+ int fixed = 0;
20	+ u8 tmp8;
21	+
22	+ if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
23	+ return;
24	+
25	+ /* TODO: What if one channel is in native mode ... */
26	+ pci_read_config_byte(dev, PCI_CLASS_PROG, &tmp8);
27	+ if ((tmp8 & 5) == 5)
28	+ return;
29	+
30	+ for( pos = 0; pos < 6; pos ++ ) {
31	+ res = &dev->resource[pos];
32	+ if (!(res->flags & (IORESOURCE_IO \| IORESOURCE_MEM)))
33	+ continue;
34	+
35	+ if (!res->start && res->end) {
36	+ res->start = res->end = 0;
37	+ res->flags = 0;
38	+ fixed = 1;
39	+ }
40	+ }
41	+ if (fixed)
42	+ printk(KERN_WARNING
43	+ "PCI device %s: BIOS resource configuration fixed.\n",
44	+ pci_name(dev));
45	+}
46	+
47	+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_11, quirk_intel_ide_controller);
48	+
49	--- linux-2.6.21.noarch/arch/ia64/kernel/Makefile~ 2007-05-27 23:23:36.000000000 -0400
50	+++ linux-2.6.21.noarch/arch/ia64/kernel/Makefile 2007-05-27 23:23:48.000000000 -0400
51	@@ -33,6 +33,7 @@ obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
52	obj-$(CONFIG_IA64_UNCACHED_ALLOCATOR) += uncached.o
53	obj-$(CONFIG_AUDIT) += audit.o
54	obj-$(CONFIG_PCI_MSI) += msi_ia64.o
55	+obj-$(CONFIG_PCI) += quirks.o
56	mca_recovery-y += mca_drv.o mca_drv_asm.o
57	obj-$(CONFIG_IA64_MC_ERR_INJECT)+= err_inject.o
58
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