# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID 98b83cc57eca28c4beff7d76cf0ddf1cc6e2c9da
# Parent ca90d2903b7b31506430cfb10653cad1c374bd74
Missing quirks.c file.
diff -r ca90d2903b7b -r 98b83cc57eca
linux-2.6-xen-sparse/arch/xen/i386/kernel/quirks.c
--- /dev/null Thu Jul 14 11:09:21 2005
+++ b/linux-2.6-xen-sparse/arch/xen/i386/kernel/quirks.c Thu Jul 14
14:01:21 2005
@@ -0,0 +1,49 @@
+/*
+ * This file contains work-arounds for x86 and x86_64 platform bugs.
+ */
+#include <linux/config.h>
+#include <linux/pci.h>
+#include <linux/irq.h>
+
+#if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_SMP) && 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);
+ config |= 0x2;
+ pci_write_config_byte(dev, 0xf4, config);
+
+ /* read xTPR register */
+ raw_pci_ops->read(0, 0, 0x40, 0x4c, 2, &word);
+
+ if (!(word & (1 << 13))) {
+ dom0_op_t op;
+ printk(KERN_INFO "Disabling irq balancing and affinity\n");
+ op.cmd = DOM0_PLATFORM_QUIRK;
+ op.u.platform_quirk.quirk_id = QUIRK_NOIRQBALANCING;
+ (void)HYPERVISOR_dom0_op(&op);
+ }
+
+ config &= ~0x2;
+ /* disable access to config space*/
+ 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
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