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1da177e4 LT |
1 | #ifndef __ASM_APIC_H |
2 | #define __ASM_APIC_H | |
3 | ||
4 | #include <linux/config.h> | |
5 | #include <linux/pm.h> | |
6 | #include <asm/fixmap.h> | |
7 | #include <asm/apicdef.h> | |
9635b47d | 8 | #include <asm/processor.h> |
1da177e4 LT |
9 | #include <asm/system.h> |
10 | ||
11 | #define Dprintk(x...) | |
12 | ||
13 | /* | |
14 | * Debugging macros | |
15 | */ | |
16 | #define APIC_QUIET 0 | |
17 | #define APIC_VERBOSE 1 | |
18 | #define APIC_DEBUG 2 | |
19 | ||
9635b47d | 20 | extern int enable_local_apic; |
1da177e4 LT |
21 | extern int apic_verbosity; |
22 | ||
9635b47d EB |
23 | static inline void lapic_disable(void) |
24 | { | |
25 | enable_local_apic = -1; | |
26 | clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability); | |
27 | } | |
28 | ||
29 | static inline void lapic_enable(void) | |
30 | { | |
31 | enable_local_apic = 1; | |
32 | } | |
33 | ||
1da177e4 LT |
34 | /* |
35 | * Define the default level of output to be very little | |
36 | * This can be turned up by using apic=verbose for more | |
37 | * information and apic=debug for _lots_ of information. | |
38 | * apic_verbosity is defined in apic.c | |
39 | */ | |
40 | #define apic_printk(v, s, a...) do { \ | |
41 | if ((v) <= apic_verbosity) \ | |
42 | printk(s, ##a); \ | |
43 | } while (0) | |
44 | ||
45 | ||
46 | #ifdef CONFIG_X86_LOCAL_APIC | |
47 | ||
48 | /* | |
49 | * Basic functions accessing APICs. | |
50 | */ | |
51 | ||
52 | static __inline void apic_write(unsigned long reg, unsigned long v) | |
53 | { | |
54 | *((volatile unsigned long *)(APIC_BASE+reg)) = v; | |
55 | } | |
56 | ||
57 | static __inline void apic_write_atomic(unsigned long reg, unsigned long v) | |
58 | { | |
59 | xchg((volatile unsigned long *)(APIC_BASE+reg), v); | |
60 | } | |
61 | ||
62 | static __inline unsigned long apic_read(unsigned long reg) | |
63 | { | |
64 | return *((volatile unsigned long *)(APIC_BASE+reg)); | |
65 | } | |
66 | ||
67 | static __inline__ void apic_wait_icr_idle(void) | |
68 | { | |
69 | while ( apic_read( APIC_ICR ) & APIC_ICR_BUSY ) | |
70 | cpu_relax(); | |
71 | } | |
72 | ||
73 | int get_physical_broadcast(void); | |
74 | ||
75 | #ifdef CONFIG_X86_GOOD_APIC | |
76 | # define FORCE_READ_AROUND_WRITE 0 | |
77 | # define apic_read_around(x) | |
78 | # define apic_write_around(x,y) apic_write((x),(y)) | |
79 | #else | |
80 | # define FORCE_READ_AROUND_WRITE 1 | |
81 | # define apic_read_around(x) apic_read(x) | |
82 | # define apic_write_around(x,y) apic_write_atomic((x),(y)) | |
83 | #endif | |
84 | ||
85 | static inline void ack_APIC_irq(void) | |
86 | { | |
87 | /* | |
88 | * ack_APIC_irq() actually gets compiled as a single instruction: | |
89 | * - a single rmw on Pentium/82489DX | |
90 | * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC) | |
91 | * ... yummie. | |
92 | */ | |
93 | ||
94 | /* Docs say use 0 for future compatibility */ | |
95 | apic_write_around(APIC_EOI, 0); | |
96 | } | |
97 | ||
98 | extern void (*wait_timer_tick)(void); | |
99 | ||
100 | extern int get_maxlvt(void); | |
101 | extern void clear_local_APIC(void); | |
102 | extern void connect_bsp_APIC (void); | |
650927ef | 103 | extern void disconnect_bsp_APIC (int virt_wire_setup); |
1da177e4 LT |
104 | extern void disable_local_APIC (void); |
105 | extern void lapic_shutdown (void); | |
106 | extern int verify_local_APIC (void); | |
107 | extern void cache_APIC_registers (void); | |
108 | extern void sync_Arb_IDs (void); | |
109 | extern void init_bsp_APIC (void); | |
110 | extern void setup_local_APIC (void); | |
111 | extern void init_apic_mappings (void); | |
112 | extern void smp_local_timer_interrupt (struct pt_regs * regs); | |
113 | extern void setup_boot_APIC_clock (void); | |
114 | extern void setup_secondary_APIC_clock (void); | |
115 | extern void setup_apic_nmi_watchdog (void); | |
116 | extern int reserve_lapic_nmi(void); | |
117 | extern void release_lapic_nmi(void); | |
118 | extern void disable_timer_nmi_watchdog(void); | |
119 | extern void enable_timer_nmi_watchdog(void); | |
120 | extern void nmi_watchdog_tick (struct pt_regs * regs); | |
121 | extern int APIC_init_uniprocessor (void); | |
122 | extern void disable_APIC_timer(void); | |
123 | extern void enable_APIC_timer(void); | |
124 | ||
1da177e4 LT |
125 | extern void enable_NMI_through_LVT0 (void * dummy); |
126 | ||
127 | extern unsigned int nmi_watchdog; | |
128 | #define NMI_NONE 0 | |
129 | #define NMI_IO_APIC 1 | |
130 | #define NMI_LOCAL_APIC 2 | |
131 | #define NMI_INVALID 3 | |
132 | ||
133 | #else /* !CONFIG_X86_LOCAL_APIC */ | |
134 | static inline void lapic_shutdown(void) { } | |
135 | ||
136 | #endif /* !CONFIG_X86_LOCAL_APIC */ | |
137 | ||
138 | #endif /* __ASM_APIC_H */ |