src/patches/suse-2.6.27.31/patches.arch/x86-disable-broadcomm-boot-interrupt-generation.patch

   1 From: Olaf Dabrunz <od@suse.de>
   2
   3 Subject: Add quirk to disable boot interrupt generation on broadcom HT1000
   4
   5 Signed-off-by: Olaf Dabrunz <od@suse.de>
   6 Signed-off-by: Stefan Assmann <sassmann@suse.de>
   7 ---
   8  drivers/pci/quirks.c |   32 ++++++++++++++++++++++++++++++++
   9  1 file changed, 32 insertions(+)
  10
  11 --- a/drivers/pci/quirks.c
  12 +++ b/drivers/pci/quirks.c
  13 @@ -1477,6 +1477,38 @@ static void quirk_disable_intel_boot_int
  14                 dev->vendor, dev->device);
  15  }
  16  DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ESB_10,     quirk_disable_intel_boot_interrupt);
  17 +
  18 +/*
  19 + * disable boot interrupts on HT-1000
  20 + */
  21 +#define BC_HT1000_FEATURE_REG          0x64
  22 +#define BC_HT1000_PIC_REGS_ENABLE      (1<<0)
  23 +#define BC_HT1000_MAP_IDX              0xC00
  24 +#define BC_HT1000_MAP_DATA             0xC01
  25 +
  26 +static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev)
  27 +{
  28 +       u32 pci_config_dword;
  29 +       u8 irq;
  30 +
  31 +       if (noioapicquirk)
  32 +               return;
  33 +
  34 +       pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword);
  35 +       pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword |
  36 +                       BC_HT1000_PIC_REGS_ENABLE);
  37 +
  38 +       for (irq = 0x10; irq < 0x10 + 32; irq++) {
  39 +               outb(irq, BC_HT1000_MAP_IDX);
  40 +               outb(0x00, BC_HT1000_MAP_DATA);
  41 +       }
  42 +
  43 +       pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword);
  44 +
  45 +       printk(KERN_INFO "disabled boot interrupts on PCI device"
  46 +                       "0x%04x:0x%04x\n", dev->vendor, dev->device);
  47 +}
  48 +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS,   PCI_DEVICE_ID_SERVERWORKS_HT1000SB,       quirk_disable_broadcom_boot_interrupt);
  49  #endif /* CONFIG_X86_IO_APIC */
  50
  51  /*