[PATCH] x86: revert x86_64-mm-fix-the-irqbalance-quirk-for-e7320-e7520-e7525

Obsoleted by Ingo's genapic stuff.

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Andi Kleen <ak@suse.de>
Cc: "Li, Shaohua" <shaohua.li@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Andi Kleen <ak@suse.de>

diff --git a/arch/i386/kernel/acpi/earlyquirk.c b/arch/i386/kernel/acpi/earlyquirk.c
index 8f7efd3..23f78ef 100644 (file)
--- a/arch/i386/kernel/acpi/earlyquirk.c
+++ b/arch/i386/kernel/acpi/earlyquirk.c
@@ -10,7 +10,6 @@
 #include <asm/pci-direct.h>
 #include <asm/acpi.h>
 #include <asm/apic.h>
-#include <asm/irq.h>
 
 #ifdef CONFIG_ACPI
 
@@ -48,24 +47,6 @@ static int __init check_bridge(int vendor, int device)
        return 0;
 }
 
-static void check_intel(void)
-{
-       u16 vendor, device;
-
-       vendor = read_pci_config_16(0, 0, 0, PCI_VENDOR_ID);
-
-       if (vendor != PCI_VENDOR_ID_INTEL)
-               return;
-
-       device = read_pci_config_16(0, 0, 0, PCI_DEVICE_ID);
-#ifdef CONFIG_SMP
-       if (device == PCI_DEVICE_ID_INTEL_E7320_MCH ||
-           device == PCI_DEVICE_ID_INTEL_E7520_MCH ||
-           device == PCI_DEVICE_ID_INTEL_E7525_MCH)
-               quirk_intel_irqbalance();
-#endif
-}
-
 void __init check_acpi_pci(void)
 {
        int num, slot, func;
@@ -77,8 +58,6 @@ void __init check_acpi_pci(void)
        if (!early_pci_allowed())
                return;
 
-       check_intel();
-
        /* Poor man's PCI discovery */
        for (num = 0; num < 32; num++) {
                for (slot = 0; slot < 32; slot++) {

diff --git a/arch/i386/kernel/quirks.c b/arch/i386/kernel/quirks.c
index a01320a..9f6ab17 100644 (file)
--- a/arch/i386/kernel/quirks.c
+++ b/arch/i386/kernel/quirks.c
@@ -3,23 +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)
-{
-#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
-}
 
-void __init quirk_intel_irqbalance(void)
+static void __devinit quirk_intel_irqbalance(struct pci_dev *dev)
 {
        u8 config, rev;
        u32 word;
@@ -29,18 +16,18 @@ void __init quirk_intel_irqbalance(void)
         * based platforms.
         * Disable SW irqbalance/affinity on those platforms.
         */
-       rev = read_pci_config_byte(0, 0, 0, PCI_CLASS_REVISION);
+       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 */
-       config = read_pci_config_byte(0, 0, 0, 0xf4);
-       write_pci_config_byte(0, 0, 0, 0xf4, config|0x2);
+       /* enable access to config space*/
+       pci_read_config_byte(dev, 0xf4, &config);
+       pci_write_config_byte(dev, 0xf4, config|0x2);
 
        /* read xTPR register */
-       word = read_pci_config_16(0, 0, 0x40, 0x4c);
+       raw_pci_ops->read(0, 0, 0x40, 0x4c, 2, &word);
 
        if (!(word & (1 << 13))) {
                printk(KERN_INFO "Disabling irq balancing and affinity\n");
@@ -51,24 +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

diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c
index 4ff55e6..7b14e88 100644 (file)
--- a/arch/i386/kernel/smpboot.c
+++ b/arch/i386/kernel/smpboot.c
@@ -54,7 +54,6 @@
 #include <asm/arch_hooks.h>
 #include <asm/nmi.h>
 #include <asm/pda.h>
-#include <asm/genapic.h>
 
 #include <mach_apic.h>
 #include <mach_wakecpu.h>
@@ -1319,11 +1318,6 @@ int __cpuinit __cpu_up(unsigned int cpu)
                touch_nmi_watchdog();
        }
 
-#ifdef CONFIG_X86_GENERICARCH
-       if (num_online_cpus() > 8 && genapic == &apic_default)
-               panic("Default flat APIC routing can't be used with > 8 cpus\n");
-#endif
-
        return 0;
 }
 

diff --git a/arch/x86_64/kernel/early-quirks.c b/arch/x86_64/kernel/early-quirks.c
index fede55a..990d9c2 100644 (file)
--- a/arch/x86_64/kernel/early-quirks.c
+++ b/arch/x86_64/kernel/early-quirks.c
@@ -71,18 +71,6 @@ static void __init ati_bugs(void)
        }
 }
 
-static void intel_bugs(void)
-{
-       u16 device = read_pci_config_16(0, 0, 0, PCI_DEVICE_ID);
-
-#ifdef CONFIG_SMP
-       if (device == PCI_DEVICE_ID_INTEL_E7320_MCH ||
-           device == PCI_DEVICE_ID_INTEL_E7520_MCH ||
-           device == PCI_DEVICE_ID_INTEL_E7525_MCH)
-               quirk_intel_irqbalance();
-#endif
-}
-
 struct chipset {
        u16 vendor;
        void (*f)(void);
@@ -92,7 +80,6 @@ static struct chipset early_qrk[] __initdata = {
        { PCI_VENDOR_ID_NVIDIA, nvidia_bugs },
        { PCI_VENDOR_ID_VIA, via_bugs },
        { PCI_VENDOR_ID_ATI, ati_bugs },
-       { PCI_VENDOR_ID_INTEL, intel_bugs},
        {}
 };
 

diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
index cd4643a..14724be 100644 (file)
--- a/arch/x86_64/kernel/smpboot.c
+++ b/arch/x86_64/kernel/smpboot.c
@@ -60,7 +60,6 @@
 #include <asm/irq.h>
 #include <asm/hw_irq.h>
 #include <asm/numa.h>
-#include <asm/genapic.h>
 
 /* Number of siblings per CPU package */
 int smp_num_siblings = 1;
@@ -965,13 +964,6 @@ int __cpuinit __cpu_up(unsigned int cpu)
 
        while (!cpu_isset(cpu, cpu_online_map))
                cpu_relax();
-
-       if (num_online_cpus() > 8 && genapic == &apic_flat) {
-               printk(KERN_WARNING
-                      "flat APIC routing can't be used with > 8 cpus\n");
-               BUG();
-       }
-
        err = 0;
 
        return err;

diff --git a/include/asm-i386/genapic.h b/include/asm-i386/genapic.h
index fd2be59..8ffbb0f 100644 (file)
--- a/include/asm-i386/genapic.h
+++ b/include/asm-i386/genapic.h
@@ -122,6 +122,6 @@ struct genapic {
        APICFUNC(phys_pkg_id) \
        }
 
-extern struct genapic *genapic, apic_default;
+extern struct genapic *genapic;
 
 #endif

diff --git a/include/asm-i386/irq.h b/include/asm-i386/irq.h
index 11761cd..9e15ce0 100644 (file)
--- a/include/asm-i386/irq.h
+++ b/include/asm-i386/irq.h
@@ -37,8 +37,6 @@ static __inline__ int irq_canonicalize(int irq)
 extern int irqbalance_disable(char *str);
 #endif
 
-extern void quirk_intel_irqbalance(void);
-
 #ifdef CONFIG_HOTPLUG_CPU
 extern void fixup_irqs(cpumask_t map);
 #endif

diff --git a/include/asm-x86_64/proto.h b/include/asm-x86_64/proto.h
index b6e65a6..6688cf9 100644 (file)
--- a/include/asm-x86_64/proto.h
+++ b/include/asm-x86_64/proto.h
@@ -82,7 +82,6 @@ extern void syscall32_cpu_init(void);
 extern void setup_node_bootmem(int nodeid, unsigned long start, unsigned long end);
 
 extern void early_quirks(void);
-extern void quirk_intel_irqbalance(void);
 extern void check_efer(void);
 
 extern int unhandled_signal(struct task_struct *tsk, int sig);