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-rw-r--r--arch/x86/kernel/early-quirks.c86
1 files changed, 65 insertions, 21 deletions
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 88bb83ec895f..b55258e49208 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -21,7 +21,30 @@
#include <asm/gart.h>
#endif
-static void __init via_bugs(void)
+static void __init fix_hypertransport_config(int num, int slot, int func)
+{
+ u32 htcfg;
+ /*
+ * we found a hypertransport bus
+ * make sure that we are broadcasting
+ * interrupts to all cpus on the ht bus
+ * if we're using extended apic ids
+ */
+ htcfg = read_pci_config(num, slot, func, 0x68);
+ if (htcfg & (1 << 18)) {
+ printk(KERN_INFO "Detected use of extended apic ids on hypertransport bus\n");
+ if ((htcfg & (1 << 17)) == 0) {
+ printk(KERN_INFO "Enabling hypertransport extended apic interrupt broadcast\n");
+ printk(KERN_INFO "Note this is a bios bug, please contact your hw vendor\n");
+ htcfg |= (1 << 17);
+ write_pci_config(num, slot, func, 0x68, htcfg);
+ }
+ }
+
+
+}
+
+static void __init via_bugs(int num, int slot, int func)
{
#ifdef CONFIG_GART_IOMMU
if ((end_pfn > MAX_DMA32_PFN || force_iommu) &&
@@ -44,7 +67,7 @@ static int __init nvidia_hpet_check(struct acpi_table_header *header)
#endif /* CONFIG_X86_IO_APIC */
#endif /* CONFIG_ACPI */
-static void __init nvidia_bugs(void)
+static void __init nvidia_bugs(int num, int slot, int func)
{
#ifdef CONFIG_ACPI
#ifdef CONFIG_X86_IO_APIC
@@ -72,7 +95,7 @@ static void __init nvidia_bugs(void)
}
-static void __init ati_bugs(void)
+static void __init ati_bugs(int num, int slot, int func)
{
#ifdef CONFIG_X86_IO_APIC
if (timer_over_8254 == 1) {
@@ -83,15 +106,27 @@ static void __init ati_bugs(void)
#endif
}
+#define QFLAG_APPLY_ONCE 0x1
+#define QFLAG_APPLIED 0x2
+#define QFLAG_DONE (QFLAG_APPLY_ONCE|QFLAG_APPLIED)
struct chipset {
- u16 vendor;
- void (*f)(void);
+ u32 vendor;
+ u32 device;
+ u32 class;
+ u32 class_mask;
+ u32 flags;
+ void (*f)(int num, int slot, int func);
};
static struct chipset early_qrk[] __initdata = {
- { PCI_VENDOR_ID_NVIDIA, nvidia_bugs },
- { PCI_VENDOR_ID_VIA, via_bugs },
- { PCI_VENDOR_ID_ATI, ati_bugs },
+ { PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
+ PCI_CLASS_BRIDGE_PCI, PCI_ANY_ID, QFLAG_APPLY_ONCE, nvidia_bugs },
+ { PCI_VENDOR_ID_VIA, PCI_ANY_ID,
+ PCI_CLASS_BRIDGE_PCI, PCI_ANY_ID, QFLAG_APPLY_ONCE, via_bugs },
+ { PCI_VENDOR_ID_ATI, PCI_ANY_ID,
+ PCI_CLASS_BRIDGE_PCI, PCI_ANY_ID, QFLAG_APPLY_ONCE, ati_bugs },
+ { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB,
+ PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, fix_hypertransport_config },
{}
};
@@ -106,27 +141,36 @@ void __init early_quirks(void)
for (num = 0; num < 32; num++) {
for (slot = 0; slot < 32; slot++) {
for (func = 0; func < 8; func++) {
- u32 class;
- u32 vendor;
+ u16 class;
+ u16 vendor;
+ u16 device;
u8 type;
int i;
- class = read_pci_config(num,slot,func,
+
+ class = read_pci_config_16(num,slot,func,
PCI_CLASS_REVISION);
- if (class == 0xffffffff)
+ if (class == 0xffff)
break;
- if ((class >> 16) != PCI_CLASS_BRIDGE_PCI)
- continue;
-
- vendor = read_pci_config(num, slot, func,
+ vendor = read_pci_config_16(num, slot, func,
PCI_VENDOR_ID);
- vendor &= 0xffff;
- for (i = 0; early_qrk[i].f; i++)
- if (early_qrk[i].vendor == vendor) {
- early_qrk[i].f();
- return;
+ device = read_pci_config_16(num, slot, func,
+ PCI_DEVICE_ID);
+
+ for(i=0;early_qrk[i].f != NULL;i++) {
+ if (((early_qrk[i].vendor == PCI_ANY_ID) ||
+ (early_qrk[i].vendor == vendor)) &&
+ ((early_qrk[i].device == PCI_ANY_ID) ||
+ (early_qrk[i].device == device)) &&
+ (!((early_qrk[i].class ^ class) &
+ early_qrk[i].class_mask))) {
+ if ((early_qrk[i].flags & QFLAG_DONE) != QFLAG_DONE)
+ early_qrk[i].f(num, slot, func);
+ early_qrk[i].flags |= QFLAG_APPLIED;
+
}
+ }
type = read_pci_config_byte(num, slot, func,
PCI_HEADER_TYPE);