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1965aae3 PA |
1 | #ifndef _ASM_X86_APIC_H |
2 | #define _ASM_X86_APIC_H | |
67c5fc5c TG |
3 | |
4 | #include <linux/pm.h> | |
5 | #include <linux/delay.h> | |
593f4a78 MR |
6 | |
7 | #include <asm/alternative.h> | |
67c5fc5c TG |
8 | #include <asm/fixmap.h> |
9 | #include <asm/apicdef.h> | |
10 | #include <asm/processor.h> | |
11 | #include <asm/system.h> | |
13c88fb5 SS |
12 | #include <asm/cpufeature.h> |
13 | #include <asm/msr.h> | |
67c5fc5c TG |
14 | |
15 | #define ARCH_APICTIMER_STOPS_ON_C3 1 | |
16 | ||
67c5fc5c TG |
17 | /* |
18 | * Debugging macros | |
19 | */ | |
20 | #define APIC_QUIET 0 | |
21 | #define APIC_VERBOSE 1 | |
22 | #define APIC_DEBUG 2 | |
23 | ||
24 | /* | |
25 | * Define the default level of output to be very little | |
26 | * This can be turned up by using apic=verbose for more | |
27 | * information and apic=debug for _lots_ of information. | |
28 | * apic_verbosity is defined in apic.c | |
29 | */ | |
30 | #define apic_printk(v, s, a...) do { \ | |
31 | if ((v) <= apic_verbosity) \ | |
32 | printk(s, ##a); \ | |
33 | } while (0) | |
34 | ||
35 | ||
160d8dac | 36 | #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86_32) |
67c5fc5c | 37 | extern void generic_apic_probe(void); |
160d8dac IM |
38 | #else |
39 | static inline void generic_apic_probe(void) | |
40 | { | |
41 | } | |
42 | #endif | |
67c5fc5c TG |
43 | |
44 | #ifdef CONFIG_X86_LOCAL_APIC | |
45 | ||
baa13188 | 46 | extern unsigned int apic_verbosity; |
67c5fc5c | 47 | extern int local_apic_timer_c2_ok; |
67c5fc5c | 48 | |
3c999f14 | 49 | extern int disable_apic; |
0939e4fd IM |
50 | |
51 | #ifdef CONFIG_SMP | |
52 | extern void __inquire_remote_apic(int apicid); | |
53 | #else /* CONFIG_SMP */ | |
54 | static inline void __inquire_remote_apic(int apicid) | |
55 | { | |
56 | } | |
57 | #endif /* CONFIG_SMP */ | |
58 | ||
59 | static inline void default_inquire_remote_apic(int apicid) | |
60 | { | |
61 | if (apic_verbosity >= APIC_DEBUG) | |
62 | __inquire_remote_apic(apicid); | |
63 | } | |
64 | ||
67c5fc5c TG |
65 | /* |
66 | * Basic functions accessing APICs. | |
67 | */ | |
68 | #ifdef CONFIG_PARAVIRT | |
69 | #include <asm/paravirt.h> | |
96a388de | 70 | #else |
67c5fc5c TG |
71 | #define setup_boot_clock setup_boot_APIC_clock |
72 | #define setup_secondary_clock setup_secondary_APIC_clock | |
96a388de | 73 | #endif |
67c5fc5c | 74 | |
aa7d8e25 | 75 | extern int is_vsmp_box(void); |
2b97df06 JS |
76 | extern void xapic_wait_icr_idle(void); |
77 | extern u32 safe_xapic_wait_icr_idle(void); | |
2b97df06 JS |
78 | extern void xapic_icr_write(u32, u32); |
79 | extern int setup_profiling_timer(unsigned int); | |
aa7d8e25 | 80 | |
1b374e4d | 81 | static inline void native_apic_mem_write(u32 reg, u32 v) |
67c5fc5c | 82 | { |
593f4a78 | 83 | volatile u32 *addr = (volatile u32 *)(APIC_BASE + reg); |
67c5fc5c | 84 | |
593f4a78 MR |
85 | alternative_io("movl %0, %1", "xchgl %0, %1", X86_FEATURE_11AP, |
86 | ASM_OUTPUT2("=r" (v), "=m" (*addr)), | |
87 | ASM_OUTPUT2("0" (v), "m" (*addr))); | |
67c5fc5c TG |
88 | } |
89 | ||
1b374e4d | 90 | static inline u32 native_apic_mem_read(u32 reg) |
67c5fc5c TG |
91 | { |
92 | return *((volatile u32 *)(APIC_BASE + reg)); | |
93 | } | |
94 | ||
13c88fb5 SS |
95 | static inline void native_apic_msr_write(u32 reg, u32 v) |
96 | { | |
97 | if (reg == APIC_DFR || reg == APIC_ID || reg == APIC_LDR || | |
98 | reg == APIC_LVR) | |
99 | return; | |
100 | ||
101 | wrmsr(APIC_BASE_MSR + (reg >> 4), v, 0); | |
102 | } | |
103 | ||
104 | static inline u32 native_apic_msr_read(u32 reg) | |
105 | { | |
106 | u32 low, high; | |
107 | ||
108 | if (reg == APIC_DFR) | |
109 | return -1; | |
110 | ||
111 | rdmsr(APIC_BASE_MSR + (reg >> 4), low, high); | |
112 | return low; | |
113 | } | |
114 | ||
c535b6a1 | 115 | #ifndef CONFIG_X86_32 |
b6b301aa | 116 | extern int x2apic; |
6e1cb38a SS |
117 | extern void check_x2apic(void); |
118 | extern void enable_x2apic(void); | |
119 | extern void enable_IR_x2apic(void); | |
120 | extern void x2apic_icr_write(u32 low, u32 id); | |
a11b5abe YL |
121 | static inline int x2apic_enabled(void) |
122 | { | |
123 | int msr, msr2; | |
124 | ||
125 | if (!cpu_has_x2apic) | |
126 | return 0; | |
127 | ||
128 | rdmsr(MSR_IA32_APICBASE, msr, msr2); | |
129 | if (msr & X2APIC_ENABLE) | |
130 | return 1; | |
131 | return 0; | |
132 | } | |
133 | #else | |
134 | #define x2apic_enabled() 0 | |
c535b6a1 | 135 | #endif |
1b374e4d SS |
136 | |
137 | struct apic_ops { | |
138 | u32 (*read)(u32 reg); | |
139 | void (*write)(u32 reg, u32 v); | |
1b374e4d SS |
140 | u64 (*icr_read)(void); |
141 | void (*icr_write)(u32 low, u32 high); | |
142 | void (*wait_icr_idle)(void); | |
143 | u32 (*safe_wait_icr_idle)(void); | |
144 | }; | |
145 | ||
146 | extern struct apic_ops *apic_ops; | |
147 | ||
3c552ac8 JF |
148 | static inline u32 apic_read(u32 reg) |
149 | { | |
150 | return apic_ops->read(reg); | |
151 | } | |
152 | ||
153 | static inline void apic_write(u32 reg, u32 val) | |
154 | { | |
155 | apic_ops->write(reg, val); | |
156 | } | |
157 | ||
158 | static inline u64 apic_icr_read(void) | |
159 | { | |
160 | return apic_ops->icr_read(); | |
161 | } | |
162 | ||
163 | static inline void apic_icr_write(u32 low, u32 high) | |
164 | { | |
165 | apic_ops->icr_write(low, high); | |
166 | } | |
167 | ||
168 | static inline void apic_wait_icr_idle(void) | |
169 | { | |
170 | apic_ops->wait_icr_idle(); | |
171 | } | |
172 | ||
173 | static inline u32 safe_apic_wait_icr_idle(void) | |
174 | { | |
175 | return apic_ops->safe_wait_icr_idle(); | |
176 | } | |
1b374e4d | 177 | |
67c5fc5c TG |
178 | extern int get_physical_broadcast(void); |
179 | ||
89027d35 SS |
180 | #ifdef CONFIG_X86_64 |
181 | static inline void ack_x2APIC_irq(void) | |
182 | { | |
183 | /* Docs say use 0 for future compatibility */ | |
184 | native_apic_msr_write(APIC_EOI, 0); | |
185 | } | |
186 | #endif | |
187 | ||
188 | ||
67c5fc5c TG |
189 | static inline void ack_APIC_irq(void) |
190 | { | |
191 | /* | |
0791e13f | 192 | * ack_APIC_irq() actually gets compiled as a single instruction |
67c5fc5c TG |
193 | * ... yummie. |
194 | */ | |
195 | ||
196 | /* Docs say use 0 for future compatibility */ | |
593f4a78 | 197 | apic_write(APIC_EOI, 0); |
67c5fc5c TG |
198 | } |
199 | ||
200 | extern int lapic_get_maxlvt(void); | |
201 | extern void clear_local_APIC(void); | |
202 | extern void connect_bsp_APIC(void); | |
203 | extern void disconnect_bsp_APIC(int virt_wire_setup); | |
204 | extern void disable_local_APIC(void); | |
205 | extern void lapic_shutdown(void); | |
206 | extern int verify_local_APIC(void); | |
207 | extern void cache_APIC_registers(void); | |
208 | extern void sync_Arb_IDs(void); | |
209 | extern void init_bsp_APIC(void); | |
210 | extern void setup_local_APIC(void); | |
739f33b3 | 211 | extern void end_local_APIC_setup(void); |
67c5fc5c | 212 | extern void init_apic_mappings(void); |
67c5fc5c TG |
213 | extern void setup_boot_APIC_clock(void); |
214 | extern void setup_secondary_APIC_clock(void); | |
215 | extern int APIC_init_uniprocessor(void); | |
e9427101 | 216 | extern void enable_NMI_through_LVT0(void); |
67c5fc5c TG |
217 | |
218 | /* | |
219 | * On 32bit this is mach-xxx local | |
220 | */ | |
221 | #ifdef CONFIG_X86_64 | |
8643f9d0 | 222 | extern void early_init_lapic_mapping(void); |
8fbbc4b4 AK |
223 | extern int apic_is_clustered_box(void); |
224 | #else | |
225 | static inline int apic_is_clustered_box(void) | |
226 | { | |
227 | return 0; | |
228 | } | |
67c5fc5c TG |
229 | #endif |
230 | ||
7b83dae7 RR |
231 | extern u8 setup_APIC_eilvt_mce(u8 vector, u8 msg_type, u8 mask); |
232 | extern u8 setup_APIC_eilvt_ibs(u8 vector, u8 msg_type, u8 mask); | |
67c5fc5c | 233 | |
67c5fc5c TG |
234 | |
235 | #else /* !CONFIG_X86_LOCAL_APIC */ | |
236 | static inline void lapic_shutdown(void) { } | |
237 | #define local_apic_timer_c2_ok 1 | |
f3294a33 | 238 | static inline void init_apic_mappings(void) { } |
d3ec5cae | 239 | static inline void disable_local_APIC(void) { } |
67c5fc5c TG |
240 | |
241 | #endif /* !CONFIG_X86_LOCAL_APIC */ | |
242 | ||
1f75ed0c IM |
243 | #ifdef CONFIG_X86_64 |
244 | #define SET_APIC_ID(x) (apic->set_apic_id(x)) | |
245 | #else | |
246 | ||
6bda2c8b | 247 | #ifdef CONFIG_X86_LOCAL_APIC |
1dcdd3d1 | 248 | static inline unsigned default_get_apic_id(unsigned long x) |
1f75ed0c IM |
249 | { |
250 | unsigned int ver = GET_APIC_VERSION(apic_read(APIC_LVR)); | |
251 | ||
252 | if (APIC_XAPIC(ver)) | |
253 | return (x >> 24) & 0xFF; | |
254 | else | |
255 | return (x >> 24) & 0x0F; | |
256 | } | |
6bda2c8b | 257 | #endif |
1f75ed0c IM |
258 | |
259 | #endif | |
260 | ||
1965aae3 | 261 | #endif /* _ASM_X86_APIC_H */ |