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-rw-r--r--include/asm-x86/apic.h29
-rw-r--r--include/asm-x86/cpufeature.h1
-rw-r--r--include/asm-x86/mach-bigsmp/mach_apic.h4
-rw-r--r--include/asm-x86/mach-default/mach_apic.h4
-rw-r--r--include/asm-x86/mach-es7000/mach_apic.h4
-rw-r--r--include/asm-x86/mach-summit/mach_apic.h4
6 files changed, 18 insertions, 28 deletions
diff --git a/include/asm-x86/apic.h b/include/asm-x86/apic.h
index fcd2f01277b..300b65e5724 100644
--- a/include/asm-x86/apic.h
+++ b/include/asm-x86/apic.h
@@ -3,6 +3,8 @@
#include <linux/pm.h>
#include <linux/delay.h>
+
+#include <asm/alternative.h>
#include <asm/fixmap.h>
#include <asm/apicdef.h>
#include <asm/processor.h>
@@ -12,7 +14,7 @@
#define ARCH_APICTIMER_STOPS_ON_C3 1
-#define Dprintk(x...)
+#define Dprintk printk
/*
* Debugging macros
@@ -37,7 +39,7 @@ extern void generic_apic_probe(void);
#ifdef CONFIG_X86_LOCAL_APIC
-extern int apic_verbosity;
+extern unsigned int apic_verbosity;
extern int local_apic_timer_c2_ok;
extern int ioapic_force;
@@ -57,12 +59,11 @@ extern int is_vsmp_box(void);
static inline void native_apic_mem_write(u32 reg, u32 v)
{
- *((volatile u32 *)(APIC_BASE + reg)) = v;
-}
+ volatile u32 *addr = (volatile u32 *)(APIC_BASE + reg);
-static inline void native_apic_mem_write_atomic(u32 reg, u32 v)
-{
- (void)xchg((u32 *)(APIC_BASE + reg), v);
+ alternative_io("movl %0, %1", "xchgl %0, %1", X86_FEATURE_11AP,
+ ASM_OUTPUT2("=r" (v), "=m" (*addr)),
+ ASM_OUTPUT2("0" (v), "m" (*addr)));
}
static inline u32 native_apic_mem_read(u32 reg)
@@ -101,7 +102,6 @@ extern void x2apic_icr_write(u32 low, u32 id);
struct apic_ops {
u32 (*read)(u32 reg);
void (*write)(u32 reg, u32 v);
- void (*write_atomic)(u32 reg, u32 v);
u64 (*icr_read)(void);
void (*icr_write)(u32 low, u32 high);
void (*wait_icr_idle)(void);
@@ -112,7 +112,6 @@ extern struct apic_ops *apic_ops;
#define apic_read (apic_ops->read)
#define apic_write (apic_ops->write)
-#define apic_write_atomic (apic_ops->write_atomic)
#define apic_icr_read (apic_ops->icr_read)
#define apic_icr_write (apic_ops->icr_write)
#define apic_wait_icr_idle (apic_ops->wait_icr_idle)
@@ -120,16 +119,6 @@ extern struct apic_ops *apic_ops;
extern int get_physical_broadcast(void);
-#ifdef CONFIG_X86_GOOD_APIC
-# define FORCE_READ_AROUND_WRITE 0
-# define apic_read_around(x)
-# define apic_write_around(x, y) apic_write((x), (y))
-#else
-# define FORCE_READ_AROUND_WRITE 1
-# define apic_read_around(x) apic_read(x)
-# define apic_write_around(x, y) apic_write_atomic((x), (y))
-#endif
-
#ifdef CONFIG_X86_64
static inline void ack_x2APIC_irq(void)
{
@@ -150,7 +139,7 @@ static inline void ack_APIC_irq(void)
/* Docs say use 0 for future compatibility */
#ifdef CONFIG_X86_32
- apic_write_around(APIC_EOI, 0);
+ apic_write(APIC_EOI, 0);
#else
native_apic_mem_write(APIC_EOI, 0);
#endif
diff --git a/include/asm-x86/cpufeature.h b/include/asm-x86/cpufeature.h
index 5be9510ee01..89a7af37e37 100644
--- a/include/asm-x86/cpufeature.h
+++ b/include/asm-x86/cpufeature.h
@@ -79,6 +79,7 @@
#define X86_FEATURE_REP_GOOD (3*32+16) /* rep microcode works well on this CPU */
#define X86_FEATURE_MFENCE_RDTSC (3*32+17) /* Mfence synchronizes RDTSC */
#define X86_FEATURE_LFENCE_RDTSC (3*32+18) /* Lfence synchronizes RDTSC */
+#define X86_FEATURE_11AP (3*32+19) /* Bad local APIC aka 11AP */
/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
#define X86_FEATURE_XMM3 (4*32+ 0) /* Streaming SIMD Extensions-3 */
diff --git a/include/asm-x86/mach-bigsmp/mach_apic.h b/include/asm-x86/mach-bigsmp/mach_apic.h
index 017c8c19ad8..c3b9dc6970c 100644
--- a/include/asm-x86/mach-bigsmp/mach_apic.h
+++ b/include/asm-x86/mach-bigsmp/mach_apic.h
@@ -63,9 +63,9 @@ static inline void init_apic_ldr(void)
unsigned long val;
int cpu = smp_processor_id();
- apic_write_around(APIC_DFR, APIC_DFR_VALUE);
+ apic_write(APIC_DFR, APIC_DFR_VALUE);
val = calculate_ldr(cpu);
- apic_write_around(APIC_LDR, val);
+ apic_write(APIC_LDR, val);
}
static inline void setup_apic_routing(void)
diff --git a/include/asm-x86/mach-default/mach_apic.h b/include/asm-x86/mach-default/mach_apic.h
index 3d2b455581e..e7ff8ac6abc 100644
--- a/include/asm-x86/mach-default/mach_apic.h
+++ b/include/asm-x86/mach-default/mach_apic.h
@@ -48,10 +48,10 @@ static inline void init_apic_ldr(void)
{
unsigned long val;
- apic_write_around(APIC_DFR, APIC_DFR_VALUE);
+ apic_write(APIC_DFR, APIC_DFR_VALUE);
val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
val |= SET_APIC_LOGICAL_ID(1UL << smp_processor_id());
- apic_write_around(APIC_LDR, val);
+ apic_write(APIC_LDR, val);
}
static inline int apic_id_registered(void)
diff --git a/include/asm-x86/mach-es7000/mach_apic.h b/include/asm-x86/mach-es7000/mach_apic.h
index b3556ec3bca..63b4d9c189b 100644
--- a/include/asm-x86/mach-es7000/mach_apic.h
+++ b/include/asm-x86/mach-es7000/mach_apic.h
@@ -66,9 +66,9 @@ static inline void init_apic_ldr(void)
unsigned long val;
int cpu = smp_processor_id();
- apic_write_around(APIC_DFR, APIC_DFR_VALUE);
+ apic_write(APIC_DFR, APIC_DFR_VALUE);
val = calculate_ldr(cpu);
- apic_write_around(APIC_LDR, val);
+ apic_write(APIC_LDR, val);
}
#ifndef CONFIG_X86_GENERICARCH
diff --git a/include/asm-x86/mach-summit/mach_apic.h b/include/asm-x86/mach-summit/mach_apic.h
index 1f76c2e7023..75d2c95005d 100644
--- a/include/asm-x86/mach-summit/mach_apic.h
+++ b/include/asm-x86/mach-summit/mach_apic.h
@@ -63,10 +63,10 @@ static inline void init_apic_ldr(void)
* BIOS puts 5 CPUs in one APIC cluster, we're hosed. */
BUG_ON(count >= XAPIC_DEST_CPUS_SHIFT);
id = my_cluster | (1UL << count);
- apic_write_around(APIC_DFR, APIC_DFR_VALUE);
+ apic_write(APIC_DFR, APIC_DFR_VALUE);
val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
val |= SET_APIC_LOGICAL_ID(id);
- apic_write_around(APIC_LDR, val);
+ apic_write(APIC_LDR, val);
}
static inline int multi_timer_check(int apic, int irq)
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 01:01:16 +0000