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Subject[PATCH] [3/35] x86: revert x86_64-mm-fix-the-irqbalance-quirk-for-e7320-e7520-e7525
Date

From: Andrew Morton <akpm@osdl.org>

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>

---
arch/i386/kernel/acpi/earlyquirk.c | 21 ----------------
arch/i386/kernel/quirks.c | 46 ++++++++-----------------------------
arch/i386/kernel/smpboot.c | 6 ----
arch/x86_64/kernel/early-quirks.c | 13 ----------
arch/x86_64/kernel/smpboot.c | 8 ------
include/asm-i386/genapic.h | 2 -
include/asm-i386/irq.h | 2 -
include/asm-x86_64/proto.h | 1
8 files changed, 12 insertions(+), 87 deletions(-)
Index: linux/arch/i386/kernel/acpi/earlyquirk.c
===================================================================
--- linux.orig/arch/i386/kernel/acpi/earlyquirk.c
+++ linux/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

@@ -45,24 +44,6 @@ static int __init check_bridge(int vendo
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;
@@ -74,8 +55,6 @@ 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++) {
Index: linux/arch/i386/kernel/quirks.c
===================================================================
--- linux.orig/arch/i386/kernel/quirks.c
+++ linux/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
Index: linux/arch/i386/kernel/smpboot.c
===================================================================
--- linux.orig/arch/i386/kernel/smpboot.c
+++ linux/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;
}

Index: linux/arch/x86_64/kernel/early-quirks.c
===================================================================
--- linux.orig/arch/x86_64/kernel/early-quirks.c
+++ linux/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[] __init
{ PCI_VENDOR_ID_NVIDIA, nvidia_bugs },
{ PCI_VENDOR_ID_VIA, via_bugs },
{ PCI_VENDOR_ID_ATI, ati_bugs },
- { PCI_VENDOR_ID_INTEL, intel_bugs},
{}
};

Index: linux/arch/x86_64/kernel/smpboot.c
===================================================================
--- linux.orig/arch/x86_64/kernel/smpboot.c
+++ linux/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;
Index: linux/include/asm-i386/genapic.h
===================================================================
--- linux.orig/include/asm-i386/genapic.h
+++ linux/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
Index: linux/include/asm-i386/irq.h
===================================================================
--- linux.orig/include/asm-i386/irq.h
+++ linux/include/asm-i386/irq.h
@@ -37,8 +37,6 @@ static __inline__ int irq_canonicalize(i
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
Index: linux/include/asm-x86_64/proto.h
===================================================================
--- linux.orig/include/asm-x86_64/proto.h
+++ linux/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);
-
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