diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/early-quirks.c | 91 |
1 files changed, 47 insertions, 44 deletions
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c index b55258e4920..3f88e437e84 100644 --- a/arch/x86/kernel/early-quirks.c +++ b/arch/x86/kernel/early-quirks.c @@ -32,10 +32,13 @@ static void __init fix_hypertransport_config(int num, int slot, int func) */ 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"); + 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"); + 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); } @@ -130,6 +133,43 @@ static struct chipset early_qrk[] __initdata = { {} }; +static void 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; @@ -138,45 +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++) { - u16 class; - u16 vendor; - u16 device; - u8 type; - int i; - - class = read_pci_config_16(num,slot,func, - PCI_CLASS_REVISION); - if (class == 0xffff) - break; - - 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)) - 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); } |