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Diffstat (limited to 'drivers/pci/quirks.c')
-rw-r--r--drivers/pci/quirks.c41
1 files changed, 19 insertions, 22 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 637e9493034b..968033fd29f0 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -456,21 +456,16 @@ static void __init quirk_amd_8131_ioapic(struct pci_dev *dev)
456} 456}
457DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_APIC, quirk_amd_8131_ioapic ); 457DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_APIC, quirk_amd_8131_ioapic );
458 458
459static void __init quirk_svw_msi(struct pci_dev *dev)
460{
461 pci_msi_quirk = 1;
462 printk(KERN_WARNING "PCI: MSI quirk detected. pci_msi_quirk set.\n");
463}
464DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_svw_msi );
459#endif /* CONFIG_X86_IO_APIC */ 465#endif /* CONFIG_X86_IO_APIC */
460 466
461 467
462/* 468/*
463 * Via 686A/B: The PCI_INTERRUPT_LINE register for the on-chip
464 * devices, USB0/1, AC97, MC97, and ACPI, has an unusual feature:
465 * when written, it makes an internal connection to the PIC.
466 * For these devices, this register is defined to be 4 bits wide.
467 * Normally this is fine. However for IO-APIC motherboards, or
468 * non-x86 architectures (yes Via exists on PPC among other places),
469 * we must mask the PCI_INTERRUPT_LINE value versus 0xf to get
470 * interrupts delivered properly.
471 */
472
473/*
474 * FIXME: it is questionable that quirk_via_acpi 469 * FIXME: it is questionable that quirk_via_acpi
475 * is needed. It shows up as an ISA bridge, and does not 470 * is needed. It shows up as an ISA bridge, and does not
476 * support the PCI_INTERRUPT_LINE register at all. Therefore 471 * support the PCI_INTERRUPT_LINE register at all. Therefore
@@ -492,28 +487,30 @@ static void __devinit quirk_via_acpi(struct pci_dev *d)
492DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi ); 487DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi );
493DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi ); 488DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi );
494 489
495static void quirk_via_irqpic(struct pci_dev *dev) 490/*
491 * Via 686A/B: The PCI_INTERRUPT_LINE register for the on-chip
492 * devices, USB0/1, AC97, MC97, and ACPI, has an unusual feature:
493 * when written, it makes an internal connection to the PIC.
494 * For these devices, this register is defined to be 4 bits wide.
495 * Normally this is fine. However for IO-APIC motherboards, or
496 * non-x86 architectures (yes Via exists on PPC among other places),
497 * we must mask the PCI_INTERRUPT_LINE value versus 0xf to get
498 * interrupts delivered properly.
499 */
500static void quirk_via_irq(struct pci_dev *dev)
496{ 501{
497 u8 irq, new_irq; 502 u8 irq, new_irq;
498 503
499#ifdef CONFIG_X86_IO_APIC
500 if (nr_ioapics && !skip_ioapic_setup)
501 return;
502#endif
503#ifdef CONFIG_ACPI
504 if (acpi_irq_model != ACPI_IRQ_MODEL_PIC)
505 return;
506#endif
507 new_irq = dev->irq & 0xf; 504 new_irq = dev->irq & 0xf;
508 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq); 505 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
509 if (new_irq != irq) { 506 if (new_irq != irq) {
510 printk(KERN_INFO "PCI: Via PIC IRQ fixup for %s, from %d to %d\n", 507 printk(KERN_INFO "PCI: Via IRQ fixup for %s, from %d to %d\n",
511 pci_name(dev), irq, new_irq); 508 pci_name(dev), irq, new_irq);
512 udelay(15); /* unknown if delay really needed */ 509 udelay(15); /* unknown if delay really needed */
513 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq); 510 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
514 } 511 }
515} 512}
516DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_irqpic); 513DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_irq);
517 514
518/* 515/*
519 * PIIX3 USB: We have to disable USB interrupts that are 516 * PIIX3 USB: We have to disable USB interrupts that are