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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | #ifndef __ASM_APIC_H |
| 2 | #define __ASM_APIC_H |
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| 3 | |||
| 4 | #include <linux/config.h> |
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| 5 | #include <linux/pm.h> |
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| 6 | #include <asm/fixmap.h> |
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| 7 | #include <asm/apicdef.h> |
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| 8 | #include <asm/system.h> |
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| 9 | |||
| 10 | #define APIC_DEBUG 0 |
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| 11 | |||
| 12 | #if APIC_DEBUG |
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| 13 | #define Dprintk(x...) printk(x) |
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| 14 | #else |
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| 15 | #define Dprintk(x...) |
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| 16 | #endif |
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| 17 | |||
| 18 | #ifdef CONFIG_X86_LOCAL_APIC |
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| 19 | |||
| 20 | /* |
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| 21 | * Basic functions accessing APICs. |
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| 22 | */ |
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| 23 | |||
| 24 | static __inline void apic_write(unsigned long reg, unsigned long v) |
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| 25 | { |
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| 26 | *((volatile unsigned long *)(APIC_BASE+reg)) = v; |
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| 27 | } |
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| 28 | |||
| 29 | static __inline void apic_write_atomic(unsigned long reg, unsigned long v) |
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| 30 | { |
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| 31 | xchg((volatile unsigned long *)(APIC_BASE+reg), v); |
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| 32 | } |
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| 33 | |||
| 34 | static __inline unsigned long apic_read(unsigned long reg) |
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| 35 | { |
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| 36 | return *((volatile unsigned long *)(APIC_BASE+reg)); |
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| 37 | } |
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| 38 | |||
| 39 | static __inline__ void apic_wait_icr_idle(void) |
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| 40 | { |
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| 41 | do { } while ( apic_read( APIC_ICR ) & APIC_ICR_BUSY ); |
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| 42 | } |
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| 43 | |||
| 44 | #ifdef CONFIG_X86_GOOD_APIC |
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| 45 | # define FORCE_READ_AROUND_WRITE 0 |
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| 46 | # define apic_read_around(x) |
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| 47 | # define apic_write_around(x,y) apic_write((x),(y)) |
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| 48 | #else |
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| 49 | # define FORCE_READ_AROUND_WRITE 1 |
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| 50 | # define apic_read_around(x) apic_read(x) |
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| 51 | # define apic_write_around(x,y) apic_write_atomic((x),(y)) |
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| 52 | #endif |
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| 53 | |||
| 54 | static inline void ack_APIC_irq(void) |
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| 55 | { |
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| 56 | /* |
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| 57 | * ack_APIC_irq() actually gets compiled as a single instruction: |
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| 58 | * - a single rmw on Pentium/82489DX |
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| 59 | * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC) |
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| 60 | * ... yummie. |
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| 61 | */ |
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| 62 | |||
| 63 | /* Docs say use 0 for future compatibility */ |
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| 64 | apic_write_around(APIC_EOI, 0); |
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| 65 | } |
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| 66 | |||
| 67 | extern void (*wait_timer_tick)(void); |
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| 68 | |||
| 69 | extern int get_maxlvt(void); |
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| 70 | extern void clear_local_APIC(void); |
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| 71 | extern void connect_bsp_APIC (void); |
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| 72 | extern void disconnect_bsp_APIC (void); |
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| 73 | extern void disable_local_APIC (void); |
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| 74 | extern int verify_local_APIC (void); |
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| 75 | extern void cache_APIC_registers (void); |
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| 76 | extern void sync_Arb_IDs (void); |
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| 77 | extern void init_bsp_APIC (void); |
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| 78 | extern void setup_local_APIC (void); |
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| 79 | extern void init_apic_mappings (void); |
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| 80 | extern void smp_local_timer_interrupt (struct pt_regs * regs); |
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| 81 | extern void setup_boot_APIC_clock (void); |
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| 82 | extern void setup_secondary_APIC_clock (void); |
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| 83 | extern void setup_apic_nmi_watchdog (void); |
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| 84 | extern void disable_lapic_nmi_watchdog(void); |
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| 85 | extern void enable_lapic_nmi_watchdog(void); |
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| 86 | extern void disable_timer_nmi_watchdog(void); |
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| 87 | extern void enable_timer_nmi_watchdog(void); |
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| 88 | extern inline void nmi_watchdog_tick (struct pt_regs * regs); |
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| 89 | extern int APIC_init_uniprocessor (void); |
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| 90 | extern void disable_APIC_timer(void); |
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| 91 | extern void enable_APIC_timer(void); |
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| 92 | |||
| 93 | extern int check_nmi_watchdog (void); |
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| 94 | extern void enable_NMI_through_LVT0 (void * dummy); |
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| 95 | |||
| 96 | extern unsigned int nmi_watchdog; |
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| 97 | #define NMI_NONE 0 |
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| 98 | #define NMI_IO_APIC 1 |
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| 99 | #define NMI_LOCAL_APIC 2 |
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| 100 | #define NMI_INVALID 3 |
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| 101 | |||
| 102 | #endif /* CONFIG_X86_LOCAL_APIC */ |
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| 103 | |||
| 104 | #endif /* __ASM_APIC_H */ |