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1da177e4 LT |
1 | #ifndef __ASM_APIC_H |
2 | #define __ASM_APIC_H | |
3 | ||
1da177e4 LT |
4 | #include <linux/pm.h> |
5 | #include <asm/fixmap.h> | |
6 | #include <asm/apicdef.h> | |
9635b47d | 7 | #include <asm/processor.h> |
1da177e4 LT |
8 | #include <asm/system.h> |
9 | ||
10 | #define Dprintk(x...) | |
11 | ||
12 | /* | |
13 | * Debugging macros | |
14 | */ | |
15 | #define APIC_QUIET 0 | |
16 | #define APIC_VERBOSE 1 | |
17 | #define APIC_DEBUG 2 | |
18 | ||
9635b47d | 19 | extern int enable_local_apic; |
1da177e4 LT |
20 | extern int apic_verbosity; |
21 | ||
9635b47d EB |
22 | static inline void lapic_disable(void) |
23 | { | |
24 | enable_local_apic = -1; | |
25 | clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability); | |
26 | } | |
27 | ||
28 | static inline void lapic_enable(void) | |
29 | { | |
30 | enable_local_apic = 1; | |
31 | } | |
32 | ||
1da177e4 LT |
33 | /* |
34 | * Define the default level of output to be very little | |
35 | * This can be turned up by using apic=verbose for more | |
36 | * information and apic=debug for _lots_ of information. | |
37 | * apic_verbosity is defined in apic.c | |
38 | */ | |
39 | #define apic_printk(v, s, a...) do { \ | |
40 | if ((v) <= apic_verbosity) \ | |
41 | printk(s, ##a); \ | |
42 | } while (0) | |
43 | ||
44 | ||
45 | #ifdef CONFIG_X86_LOCAL_APIC | |
46 | ||
47 | /* | |
48 | * Basic functions accessing APICs. | |
49 | */ | |
50 | ||
51 | static __inline void apic_write(unsigned long reg, unsigned long v) | |
52 | { | |
53 | *((volatile unsigned long *)(APIC_BASE+reg)) = v; | |
54 | } | |
55 | ||
56 | static __inline void apic_write_atomic(unsigned long reg, unsigned long v) | |
57 | { | |
58 | xchg((volatile unsigned long *)(APIC_BASE+reg), v); | |
59 | } | |
60 | ||
61 | static __inline unsigned long apic_read(unsigned long reg) | |
62 | { | |
63 | return *((volatile unsigned long *)(APIC_BASE+reg)); | |
64 | } | |
65 | ||
66 | static __inline__ void apic_wait_icr_idle(void) | |
67 | { | |
68 | while ( apic_read( APIC_ICR ) & APIC_ICR_BUSY ) | |
69 | cpu_relax(); | |
70 | } | |
71 | ||
72 | int get_physical_broadcast(void); | |
73 | ||
74 | #ifdef CONFIG_X86_GOOD_APIC | |
75 | # define FORCE_READ_AROUND_WRITE 0 | |
76 | # define apic_read_around(x) | |
77 | # define apic_write_around(x,y) apic_write((x),(y)) | |
78 | #else | |
79 | # define FORCE_READ_AROUND_WRITE 1 | |
80 | # define apic_read_around(x) apic_read(x) | |
81 | # define apic_write_around(x,y) apic_write_atomic((x),(y)) | |
82 | #endif | |
83 | ||
84 | static inline void ack_APIC_irq(void) | |
85 | { | |
86 | /* | |
87 | * ack_APIC_irq() actually gets compiled as a single instruction: | |
88 | * - a single rmw on Pentium/82489DX | |
89 | * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC) | |
90 | * ... yummie. | |
91 | */ | |
92 | ||
93 | /* Docs say use 0 for future compatibility */ | |
94 | apic_write_around(APIC_EOI, 0); | |
95 | } | |
96 | ||
97 | extern void (*wait_timer_tick)(void); | |
98 | ||
99 | extern int get_maxlvt(void); | |
100 | extern void clear_local_APIC(void); | |
101 | extern void connect_bsp_APIC (void); | |
650927ef | 102 | extern void disconnect_bsp_APIC (int virt_wire_setup); |
1da177e4 LT |
103 | extern void disable_local_APIC (void); |
104 | extern void lapic_shutdown (void); | |
105 | extern int verify_local_APIC (void); | |
106 | extern void cache_APIC_registers (void); | |
107 | extern void sync_Arb_IDs (void); | |
108 | extern void init_bsp_APIC (void); | |
109 | extern void setup_local_APIC (void); | |
110 | extern void init_apic_mappings (void); | |
111 | extern void smp_local_timer_interrupt (struct pt_regs * regs); | |
112 | extern void setup_boot_APIC_clock (void); | |
113 | extern void setup_secondary_APIC_clock (void); | |
1da177e4 LT |
114 | extern int APIC_init_uniprocessor (void); |
115 | extern void disable_APIC_timer(void); | |
116 | extern void enable_APIC_timer(void); | |
117 | ||
1da177e4 LT |
118 | extern void enable_NMI_through_LVT0 (void * dummy); |
119 | ||
66759a01 CE |
120 | extern int disable_timer_pin_1; |
121 | ||
6eb0a0fd VP |
122 | void smp_send_timer_broadcast_ipi(struct pt_regs *regs); |
123 | void switch_APIC_timer_to_ipi(void *cpumask); | |
124 | void switch_ipi_to_APIC_timer(void *cpumask); | |
125 | #define ARCH_APICTIMER_STOPS_ON_C3 1 | |
126 | ||
f9262c12 AK |
127 | extern int timer_over_8254; |
128 | ||
1da177e4 LT |
129 | #else /* !CONFIG_X86_LOCAL_APIC */ |
130 | static inline void lapic_shutdown(void) { } | |
131 | ||
132 | #endif /* !CONFIG_X86_LOCAL_APIC */ | |
133 | ||
134 | #endif /* __ASM_APIC_H */ |