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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 | ||
19 | extern int apic_verbosity; | |
20 | ||
21 | /* | |
22 | * Define the default level of output to be very little | |
23 | * This can be turned up by using apic=verbose for more | |
24 | * information and apic=debug for _lots_ of information. | |
25 | * apic_verbosity is defined in apic.c | |
26 | */ | |
27 | #define apic_printk(v, s, a...) do { \ | |
28 | if ((v) <= apic_verbosity) \ | |
29 | printk(s, ##a); \ | |
30 | } while (0) | |
31 | ||
32 | ||
1a3f239d RR |
33 | extern void generic_apic_probe(void); |
34 | ||
1da177e4 LT |
35 | #ifdef CONFIG_X86_LOCAL_APIC |
36 | ||
37 | /* | |
38 | * Basic functions accessing APICs. | |
39 | */ | |
13623d79 RR |
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 | |
bbab4f3b ZA |
46 | #define setup_boot_clock setup_boot_APIC_clock |
47 | #define setup_secondary_clock setup_secondary_APIC_clock | |
13623d79 | 48 | #endif |
1da177e4 | 49 | |
13623d79 RR |
50 | static __inline fastcall void native_apic_write(unsigned long reg, |
51 | unsigned long v) | |
1da177e4 LT |
52 | { |
53 | *((volatile unsigned long *)(APIC_BASE+reg)) = v; | |
54 | } | |
55 | ||
13623d79 RR |
56 | static __inline fastcall void native_apic_write_atomic(unsigned long reg, |
57 | unsigned long v) | |
1da177e4 LT |
58 | { |
59 | xchg((volatile unsigned long *)(APIC_BASE+reg), v); | |
60 | } | |
61 | ||
13623d79 | 62 | static __inline fastcall unsigned long native_apic_read(unsigned long reg) |
1da177e4 LT |
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 | ||
e05d723f | 98 | extern int lapic_get_maxlvt(void); |
1da177e4 LT |
99 | extern void clear_local_APIC(void); |
100 | extern void connect_bsp_APIC (void); | |
650927ef | 101 | extern void disconnect_bsp_APIC (int virt_wire_setup); |
1da177e4 LT |
102 | extern void disable_local_APIC (void); |
103 | extern void lapic_shutdown (void); | |
104 | extern int verify_local_APIC (void); | |
105 | extern void cache_APIC_registers (void); | |
106 | extern void sync_Arb_IDs (void); | |
107 | extern void init_bsp_APIC (void); | |
108 | extern void setup_local_APIC (void); | |
109 | extern void init_apic_mappings (void); | |
7d12e780 | 110 | extern void smp_local_timer_interrupt (void); |
1da177e4 LT |
111 | extern void setup_boot_APIC_clock (void); |
112 | extern void setup_secondary_APIC_clock (void); | |
1da177e4 | 113 | extern int APIC_init_uniprocessor (void); |
1da177e4 | 114 | |
1da177e4 LT |
115 | extern void enable_NMI_through_LVT0 (void * dummy); |
116 | ||
6eb0a0fd VP |
117 | #define ARCH_APICTIMER_STOPS_ON_C3 1 |
118 | ||
f9262c12 | 119 | extern int timer_over_8254; |
e585bef8 | 120 | extern int local_apic_timer_c2_ok; |
f9262c12 | 121 | |
1da177e4 LT |
122 | #else /* !CONFIG_X86_LOCAL_APIC */ |
123 | static inline void lapic_shutdown(void) { } | |
124 | ||
125 | #endif /* !CONFIG_X86_LOCAL_APIC */ | |
126 | ||
127 | #endif /* __ASM_APIC_H */ |