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Diffstat (limited to 'include/asm-x86/apic.h')
-rw-r--r--include/asm-x86/apic.h65
1 files changed, 59 insertions, 6 deletions
diff --git a/include/asm-x86/apic.h b/include/asm-x86/apic.h
index 65590c9aecd..d76a0839abe 100644
--- a/include/asm-x86/apic.h
+++ b/include/asm-x86/apic.h
@@ -9,6 +9,8 @@
#include <asm/apicdef.h>
#include <asm/processor.h>
#include <asm/system.h>
+#include <asm/cpufeature.h>
+#include <asm/msr.h>
#define ARCH_APICTIMER_STOPS_ON_C3 1
@@ -47,8 +49,6 @@ extern int disable_apic;
#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>
#else
-#define apic_write native_apic_write
-#define apic_read native_apic_read
#define setup_boot_clock setup_boot_APIC_clock
#define setup_secondary_clock setup_secondary_APIC_clock
#endif
@@ -60,7 +60,7 @@ extern u64 xapic_icr_read(void);
extern void xapic_icr_write(u32, u32);
extern int setup_profiling_timer(unsigned int);
-static inline void native_apic_write(unsigned long reg, u32 v)
+static inline void native_apic_mem_write(u32 reg, u32 v)
{
volatile u32 *addr = (volatile u32 *)(APIC_BASE + reg);
@@ -69,15 +69,68 @@ static inline void native_apic_write(unsigned long reg, u32 v)
ASM_OUTPUT2("0" (v), "m" (*addr)));
}
-static inline u32 native_apic_read(unsigned long reg)
+static inline u32 native_apic_mem_read(u32 reg)
{
return *((volatile u32 *)(APIC_BASE + reg));
}
-extern void apic_wait_icr_idle(void);
-extern u32 safe_apic_wait_icr_idle(void);
+static inline void native_apic_msr_write(u32 reg, u32 v)
+{
+ if (reg == APIC_DFR || reg == APIC_ID || reg == APIC_LDR ||
+ reg == APIC_LVR)
+ return;
+
+ wrmsr(APIC_BASE_MSR + (reg >> 4), v, 0);
+}
+
+static inline u32 native_apic_msr_read(u32 reg)
+{
+ u32 low, high;
+
+ if (reg == APIC_DFR)
+ return -1;
+
+ rdmsr(APIC_BASE_MSR + (reg >> 4), low, high);
+ return low;
+}
+
+#ifndef CONFIG_X86_32
+extern int x2apic, x2apic_preenabled;
+extern void check_x2apic(void);
+extern void enable_x2apic(void);
+extern void enable_IR_x2apic(void);
+extern void x2apic_icr_write(u32 low, u32 id);
+#endif
+
+struct apic_ops {
+ u32 (*read)(u32 reg);
+ void (*write)(u32 reg, u32 v);
+ u64 (*icr_read)(void);
+ void (*icr_write)(u32 low, u32 high);
+ void (*wait_icr_idle)(void);
+ u32 (*safe_wait_icr_idle)(void);
+};
+
+extern struct apic_ops *apic_ops;
+
+#define apic_read (apic_ops->read)
+#define apic_write (apic_ops->write)
+#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)
+#define safe_apic_wait_icr_idle (apic_ops->safe_wait_icr_idle)
+
extern int get_physical_broadcast(void);
+#ifdef CONFIG_X86_64
+static inline void ack_x2APIC_irq(void)
+{
+ /* Docs say use 0 for future compatibility */
+ native_apic_msr_write(APIC_EOI, 0);
+}
+#endif
+
+
static inline void ack_APIC_irq(void)
{
/*