diff options
Diffstat (limited to 'arch/x86/kernel/early-quirks.c')
| -rw-r--r-- | arch/x86/kernel/early-quirks.c | 127 |
1 files changed, 87 insertions, 40 deletions
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c index 88bb83ec895..9f51e1ea9e8 100644 --- a/arch/x86/kernel/early-quirks.c +++ b/arch/x86/kernel/early-quirks.c @@ -21,7 +21,33 @@ #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 +70,7 @@ 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 +98,7 @@ 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) { @@ -83,18 +109,67 @@ 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 }, {} }; +static void __init check_dev_quirk(int num, int slot, int func) +{ + u16 class; + u16 vendor; + u16 device; + u8 type; + int i; + + class = read_pci_config_16(num, slot, func, PCI_CLASS_DEVICE); + + if (class == 0xffff) + return; + + vendor = read_pci_config_16(num, slot, func, PCI_VENDOR_ID); + + 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); + if (!(type & 0x80)) + return; +} + void __init early_quirks(void) { int num, slot, func; @@ -103,36 +178,8 @@ void __init early_quirks(void) return; /* Poor man's PCI discovery */ - for (num = 0; num < 32; num++) { - for (slot = 0; slot < 32; slot++) { - for (func = 0; func < 8; func++) { - u32 class; - u32 vendor; - u8 type; - int i; - class = read_pci_config(num,slot,func, - PCI_CLASS_REVISION); - if (class == 0xffffffff) - break; - - if ((class >> 16) != PCI_CLASS_BRIDGE_PCI) - continue; - - vendor = read_pci_config(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; - } - - type = read_pci_config_byte(num, slot, func, - PCI_HEADER_TYPE); - if (!(type & 0x80)) - break; - } - } - } + for (num = 0; num < 32; num++) + for (slot = 0; slot < 32; slot++) + for (func = 0; func < 8; func++) + check_dev_quirk(num, slot, func); } |