diff options
Diffstat (limited to 'linux-2.6-xen-sparse/arch/i386/kernel/quirks-xen.c')
| -rw-r--r-- | linux-2.6-xen-sparse/arch/i386/kernel/quirks-xen.c | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/linux-2.6-xen-sparse/arch/i386/kernel/quirks-xen.c b/linux-2.6-xen-sparse/arch/i386/kernel/quirks-xen.c deleted file mode 100644 index 85385ae6e1..0000000000 --- a/linux-2.6-xen-sparse/arch/i386/kernel/quirks-xen.c +++ /dev/null @@ -1,47 +0,0 @@ -/* - * This file contains work-arounds for x86 and x86_64 platform bugs. - */ -#include <linux/pci.h> -#include <linux/irq.h> - -#if defined(CONFIG_X86_IO_APIC) && (defined(CONFIG_SMP) || defined(CONFIG_XEN)) && defined(CONFIG_PCI) - -static void __devinit quirk_intel_irqbalance(struct pci_dev *dev) -{ - u8 config, rev; - u32 word; - - /* BIOS may enable hardware IRQ balancing for - * E7520/E7320/E7525(revision ID 0x9 and below) - * based platforms. - * Disable SW irqbalance/affinity on those platforms. - */ - pci_read_config_byte(dev, PCI_CLASS_REVISION, &rev); - if (rev > 0x9) - return; - - printk(KERN_INFO "Intel E7520/7320/7525 detected."); - - /* enable access to config space*/ - pci_read_config_byte(dev, 0xf4, &config); - pci_write_config_byte(dev, 0xf4, config|0x2); - - /* read xTPR register */ - raw_pci_ops->read(0, 0, 0x40, 0x4c, 2, &word); - - if (!(word & (1 << 13))) { - struct xen_platform_op op; - printk(KERN_INFO "Disabling irq balancing and affinity\n"); - op.cmd = XENPF_platform_quirk; - op.u.platform_quirk.quirk_id = QUIRK_NOIRQBALANCING; - (void)HYPERVISOR_platform_op(&op); - } - - /* put back the original value for config space*/ - if (!(config & 0x2)) - pci_write_config_byte(dev, 0xf4, config); -} -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_intel_irqbalance); -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_intel_irqbalance); -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_intel_irqbalance); -#endif |