da9bb1d27b
This is a subset of the bluesmoke project core code, stripped of the NMI work which isn't ready to merge and some of the "interesting" proc functionality that needs reworking or just has no place in kernel. It requires no core kernel changes except the added scrub functions already posted. The goal is to merge further functionality only after the core code is accepted and proven in the base kernel, and only at the point the upstream extras are really ready to merge. From: doug thompson <norsk5@xmission.com> This converts EDAC to sysfs and is the final chunk neccessary before EDAC has a stable user space API and can be considered for submission into the base kernel. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: doug thompson <norsk5@xmission.com> Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/*
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* This file contains work-arounds for x86 and x86_64 platform bugs.
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*/
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#include <linux/config.h>
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#include <linux/pci.h>
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#include <linux/irq.h>
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#if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_SMP) && defined(CONFIG_PCI)
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static void __devinit quirk_intel_irqbalance(struct pci_dev *dev)
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{
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u8 config, rev;
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u32 word;
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/* BIOS may enable hardware IRQ balancing for
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* E7520/E7320/E7525(revision ID 0x9 and below)
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* based platforms.
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* Disable SW irqbalance/affinity on those platforms.
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*/
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pci_read_config_byte(dev, PCI_CLASS_REVISION, &rev);
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if (rev > 0x9)
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return;
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printk(KERN_INFO "Intel E7520/7320/7525 detected.");
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/* enable access to config space*/
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pci_read_config_byte(dev, 0xf4, &config);
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pci_write_config_byte(dev, 0xf4, config|0x2);
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/* read xTPR register */
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raw_pci_ops->read(0, 0, 0x40, 0x4c, 2, &word);
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if (!(word & (1 << 13))) {
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printk(KERN_INFO "Disabling irq balancing and affinity\n");
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#ifdef CONFIG_IRQBALANCE
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irqbalance_disable("");
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#endif
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noirqdebug_setup("");
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#ifdef CONFIG_PROC_FS
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no_irq_affinity = 1;
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#endif
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}
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/* put back the original value for config space*/
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if (!(config & 0x2))
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pci_write_config_byte(dev, 0xf4, config);
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}
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DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_intel_irqbalance);
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DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_intel_irqbalance);
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DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_intel_irqbalance);
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#endif
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