aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-i386
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-i386')
-rw-r--r--include/asm-i386/apic.h15
-rw-r--r--include/asm-i386/paravirt.h27
2 files changed, 39 insertions, 3 deletions
diff --git a/include/asm-i386/apic.h b/include/asm-i386/apic.h
index b9529578fc37..41a44319905f 100644
--- a/include/asm-i386/apic.h
+++ b/include/asm-i386/apic.h
@@ -37,18 +37,27 @@ extern void generic_apic_probe(void);
37/* 37/*
38 * Basic functions accessing APICs. 38 * Basic functions accessing APICs.
39 */ 39 */
40#ifdef CONFIG_PARAVIRT
41#include <asm/paravirt.h>
42#else
43#define apic_write native_apic_write
44#define apic_write_atomic native_apic_write_atomic
45#define apic_read native_apic_read
46#endif
40 47
41static __inline void apic_write(unsigned long reg, unsigned long v) 48static __inline fastcall void native_apic_write(unsigned long reg,
49 unsigned long v)
42{ 50{
43 *((volatile unsigned long *)(APIC_BASE+reg)) = v; 51 *((volatile unsigned long *)(APIC_BASE+reg)) = v;
44} 52}
45 53
46static __inline void apic_write_atomic(unsigned long reg, unsigned long v) 54static __inline fastcall void native_apic_write_atomic(unsigned long reg,
55 unsigned long v)
47{ 56{
48 xchg((volatile unsigned long *)(APIC_BASE+reg), v); 57 xchg((volatile unsigned long *)(APIC_BASE+reg), v);
49} 58}
50 59
51static __inline unsigned long apic_read(unsigned long reg) 60static __inline fastcall unsigned long native_apic_read(unsigned long reg)
52{ 61{
53 return *((volatile unsigned long *)(APIC_BASE+reg)); 62 return *((volatile unsigned long *)(APIC_BASE+reg));
54} 63}
diff --git a/include/asm-i386/paravirt.h b/include/asm-i386/paravirt.h
index dd707d8c8270..e2c803fadb14 100644
--- a/include/asm-i386/paravirt.h
+++ b/include/asm-i386/paravirt.h
@@ -115,6 +115,12 @@ struct paravirt_ops
115 void (fastcall *io_delay)(void); 115 void (fastcall *io_delay)(void);
116 void (*const_udelay)(unsigned long loops); 116 void (*const_udelay)(unsigned long loops);
117 117
118#ifdef CONFIG_X86_LOCAL_APIC
119 void (fastcall *apic_write)(unsigned long reg, unsigned long v);
120 void (fastcall *apic_write_atomic)(unsigned long reg, unsigned long v);
121 unsigned long (fastcall *apic_read)(unsigned long reg);
122#endif
123
118 /* These two are jmp to, not actually called. */ 124 /* These two are jmp to, not actually called. */
119 void (fastcall *irq_enable_sysexit)(void); 125 void (fastcall *irq_enable_sysexit)(void);
120 void (fastcall *iret)(void); 126 void (fastcall *iret)(void);
@@ -270,6 +276,27 @@ static inline void slow_down_io(void) {
270#endif 276#endif
271} 277}
272 278
279#ifdef CONFIG_X86_LOCAL_APIC
280/*
281 * Basic functions accessing APICs.
282 */
283static inline void apic_write(unsigned long reg, unsigned long v)
284{
285 paravirt_ops.apic_write(reg,v);
286}
287
288static inline void apic_write_atomic(unsigned long reg, unsigned long v)
289{
290 paravirt_ops.apic_write_atomic(reg,v);
291}
292
293static inline unsigned long apic_read(unsigned long reg)
294{
295 return paravirt_ops.apic_read(reg);
296}
297#endif
298
299
273/* These all sit in the .parainstructions section to tell us what to patch. */ 300/* These all sit in the .parainstructions section to tell us what to patch. */
274struct paravirt_patch { 301struct paravirt_patch {
275 u8 *instr; /* original instructions */ 302 u8 *instr; /* original instructions */