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| author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-05 14:55:20 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-05 14:55:20 -0700 |
| commit | ea62ccd00fd0b6720b033adfc9984f31130ce195 (patch) | |
| tree | 9837b797b2466fffcb0af96c388b06eae9c3df18 /arch/i386/kernel/quirks.c | |
| parent | 886a0768affe9a32f18c45f8e1393bca9ece5392 (diff) | |
| parent | 35060b6a9a4e1c89bc6fbea61090e302dbc61847 (diff) | |
| download | linux-ea62ccd00fd0b6720b033adfc9984f31130ce195.tar.gz linux-ea62ccd00fd0b6720b033adfc9984f31130ce195.tar.bz2 linux-ea62ccd00fd0b6720b033adfc9984f31130ce195.zip | |
Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (231 commits)
[PATCH] i386: Don't delete cpu_devs data to identify different x86 types in late_initcall
[PATCH] i386: type may be unused
[PATCH] i386: Some additional chipset register values validation.
[PATCH] i386: Add missing !X86_PAE dependincy to the 2G/2G split.
[PATCH] x86-64: Don't exclude asm-offsets.c in Documentation/dontdiff
[PATCH] i386: avoid redundant preempt_disable in __unlazy_fpu
[PATCH] i386: white space fixes in i387.h
[PATCH] i386: Drop noisy e820 debugging printks
[PATCH] x86-64: Fix allnoconfig error in genapic_flat.c
[PATCH] x86-64: Shut up warnings for vfat compat ioctls on other file systems
[PATCH] x86-64: Share identical video.S between i386 and x86-64
[PATCH] x86-64: Remove CONFIG_REORDER
[PATCH] x86-64: Print type and size correctly for unknown compat ioctls
[PATCH] i386: Remove copy_*_user BUG_ONs for (size < 0)
[PATCH] i386: Little cleanups in smpboot.c
[PATCH] x86-64: Don't enable NUMA for a single node in K8 NUMA scanning
[PATCH] x86: Use RDTSCP for synchronous get_cycles if possible
[PATCH] i386: Add X86_FEATURE_RDTSCP
[PATCH] i386: Implement X86_FEATURE_SYNC_RDTSC on i386
[PATCH] i386: Implement alternative_io for i386
...
Fix up trivial conflict in include/linux/highmem.h manually.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/i386/kernel/quirks.c')
| -rw-r--r-- | arch/i386/kernel/quirks.c | 69 |
1 files changed, 10 insertions, 59 deletions
diff --git a/arch/i386/kernel/quirks.c b/arch/i386/kernel/quirks.c index 34874c398b44..9f6ab1789bb0 100644 --- a/arch/i386/kernel/quirks.c +++ b/arch/i386/kernel/quirks.c @@ -3,12 +3,10 @@ */ #include <linux/pci.h> #include <linux/irq.h> -#include <asm/pci-direct.h> -#include <asm/genapic.h> -#include <asm/cpu.h> #if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_SMP) && defined(CONFIG_PCI) -static void __devinit verify_quirk_intel_irqbalance(struct pci_dev *dev) + +static void __devinit quirk_intel_irqbalance(struct pci_dev *dev) { u8 config, rev; u32 word; @@ -16,12 +14,14 @@ static void __devinit verify_quirk_intel_irqbalance(struct pci_dev *dev) /* BIOS may enable hardware IRQ balancing for * E7520/E7320/E7525(revision ID 0x9 and below) * based platforms. - * For those platforms, make sure that the genapic is set to 'flat' + * 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); @@ -30,44 +30,6 @@ static void __devinit verify_quirk_intel_irqbalance(struct pci_dev *dev) raw_pci_ops->read(0, 0, 0x40, 0x4c, 2, &word); if (!(word & (1 << 13))) { -#ifdef CONFIG_X86_64 - if (genapic != &apic_flat) - panic("APIC mode must be flat on this system\n"); -#elif defined(CONFIG_X86_GENERICARCH) - if (genapic != &apic_default) - panic("APIC mode must be default(flat) on this system. Use apic=default\n"); -#endif - } - - /* put back the original value for config space*/ - if (!(config & 0x2)) - pci_write_config_byte(dev, 0xf4, config); -} - -void __init quirk_intel_irqbalance(void) -{ - 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. - */ - rev = read_pci_config_byte(0, 0, 0, PCI_CLASS_REVISION); - if (rev > 0x9) - return; - - printk(KERN_INFO "Intel E7520/7320/7525 detected."); - - /* enable access to config space */ - config = read_pci_config_byte(0, 0, 0, 0xf4); - write_pci_config_byte(0, 0, 0, 0xf4, config|0x2); - - /* read xTPR register */ - word = read_pci_config_16(0, 0, 0x40, 0x4c); - - if (!(word & (1 << 13))) { printk(KERN_INFO "Disabling irq balancing and affinity\n"); #ifdef CONFIG_IRQBALANCE irqbalance_disable(""); @@ -76,24 +38,13 @@ void __init quirk_intel_irqbalance(void) #ifdef CONFIG_PROC_FS no_irq_affinity = 1; #endif -#ifdef CONFIG_HOTPLUG_CPU - printk(KERN_INFO "Disabling cpu hotplug control\n"); - enable_cpu_hotplug = 0; -#endif -#ifdef CONFIG_X86_64 - /* force the genapic selection to flat mode so that - * interrupts can be redirected to more than one CPU. - */ - genapic_force = &apic_flat; -#endif } - /* put back the original value for config space */ + /* put back the original value for config space*/ if (!(config & 0x2)) - write_pci_config_byte(0, 0, 0, 0xf4, config); + pci_write_config_byte(dev, 0xf4, config); } -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, verify_quirk_intel_irqbalance); -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, verify_quirk_intel_irqbalance); -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, verify_quirk_intel_irqbalance); - +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 |