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1965aae3 PA |
1 | #ifndef _ASM_X86_APIC_H |
2 | #define _ASM_X86_APIC_H | |
67c5fc5c | 3 | |
e2780a68 | 4 | #include <linux/cpumask.h> |
e2780a68 | 5 | #include <linux/pm.h> |
593f4a78 MR |
6 | |
7 | #include <asm/alternative.h> | |
e2780a68 | 8 | #include <asm/cpufeature.h> |
e2780a68 | 9 | #include <asm/apicdef.h> |
60063497 | 10 | #include <linux/atomic.h> |
e2780a68 IM |
11 | #include <asm/fixmap.h> |
12 | #include <asm/mpspec.h> | |
13c88fb5 | 13 | #include <asm/msr.h> |
eddc0e92 | 14 | #include <asm/idle.h> |
67c5fc5c TG |
15 | |
16 | #define ARCH_APICTIMER_STOPS_ON_C3 1 | |
17 | ||
67c5fc5c TG |
18 | /* |
19 | * Debugging macros | |
20 | */ | |
21 | #define APIC_QUIET 0 | |
22 | #define APIC_VERBOSE 1 | |
23 | #define APIC_DEBUG 2 | |
24 | ||
b7c4948e HK |
25 | /* Macros for apic_extnmi which controls external NMI masking */ |
26 | #define APIC_EXTNMI_BSP 0 /* Default */ | |
27 | #define APIC_EXTNMI_ALL 1 | |
28 | #define APIC_EXTNMI_NONE 2 | |
29 | ||
67c5fc5c TG |
30 | /* |
31 | * Define the default level of output to be very little | |
32 | * This can be turned up by using apic=verbose for more | |
33 | * information and apic=debug for _lots_ of information. | |
34 | * apic_verbosity is defined in apic.c | |
35 | */ | |
36 | #define apic_printk(v, s, a...) do { \ | |
37 | if ((v) <= apic_verbosity) \ | |
38 | printk(s, ##a); \ | |
39 | } while (0) | |
40 | ||
41 | ||
160d8dac | 42 | #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86_32) |
67c5fc5c | 43 | extern void generic_apic_probe(void); |
160d8dac IM |
44 | #else |
45 | static inline void generic_apic_probe(void) | |
46 | { | |
47 | } | |
48 | #endif | |
67c5fc5c TG |
49 | |
50 | #ifdef CONFIG_X86_LOCAL_APIC | |
51 | ||
baa13188 | 52 | extern unsigned int apic_verbosity; |
67c5fc5c | 53 | extern int local_apic_timer_c2_ok; |
67c5fc5c | 54 | |
3c999f14 | 55 | extern int disable_apic; |
1ade93ef | 56 | extern unsigned int lapic_timer_frequency; |
0939e4fd IM |
57 | |
58 | #ifdef CONFIG_SMP | |
59 | extern void __inquire_remote_apic(int apicid); | |
60 | #else /* CONFIG_SMP */ | |
61 | static inline void __inquire_remote_apic(int apicid) | |
62 | { | |
63 | } | |
64 | #endif /* CONFIG_SMP */ | |
65 | ||
66 | static inline void default_inquire_remote_apic(int apicid) | |
67 | { | |
68 | if (apic_verbosity >= APIC_DEBUG) | |
69 | __inquire_remote_apic(apicid); | |
70 | } | |
71 | ||
8312136f CG |
72 | /* |
73 | * With 82489DX we can't rely on apic feature bit | |
74 | * retrieved via cpuid but still have to deal with | |
75 | * such an apic chip so we assume that SMP configuration | |
76 | * is found from MP table (64bit case uses ACPI mostly | |
77 | * which set smp presence flag as well so we are safe | |
78 | * to use this helper too). | |
79 | */ | |
80 | static inline bool apic_from_smp_config(void) | |
81 | { | |
82 | return smp_found_config && !disable_apic; | |
83 | } | |
84 | ||
67c5fc5c TG |
85 | /* |
86 | * Basic functions accessing APICs. | |
87 | */ | |
88 | #ifdef CONFIG_PARAVIRT | |
89 | #include <asm/paravirt.h> | |
96a388de | 90 | #endif |
67c5fc5c | 91 | |
2b97df06 | 92 | extern int setup_profiling_timer(unsigned int); |
aa7d8e25 | 93 | |
1b374e4d | 94 | static inline void native_apic_mem_write(u32 reg, u32 v) |
67c5fc5c | 95 | { |
593f4a78 | 96 | volatile u32 *addr = (volatile u32 *)(APIC_BASE + reg); |
67c5fc5c | 97 | |
a930dc45 | 98 | alternative_io("movl %0, %P1", "xchgl %0, %P1", X86_BUG_11AP, |
593f4a78 MR |
99 | ASM_OUTPUT2("=r" (v), "=m" (*addr)), |
100 | ASM_OUTPUT2("0" (v), "m" (*addr))); | |
67c5fc5c TG |
101 | } |
102 | ||
1b374e4d | 103 | static inline u32 native_apic_mem_read(u32 reg) |
67c5fc5c TG |
104 | { |
105 | return *((volatile u32 *)(APIC_BASE + reg)); | |
106 | } | |
107 | ||
c1eeb2de YL |
108 | extern void native_apic_wait_icr_idle(void); |
109 | extern u32 native_safe_apic_wait_icr_idle(void); | |
110 | extern void native_apic_icr_write(u32 low, u32 id); | |
111 | extern u64 native_apic_icr_read(void); | |
112 | ||
8d806960 TG |
113 | static inline bool apic_is_x2apic_enabled(void) |
114 | { | |
115 | u64 msr; | |
116 | ||
117 | if (rdmsrl_safe(MSR_IA32_APICBASE, &msr)) | |
118 | return false; | |
119 | return msr & X2APIC_ENABLE; | |
120 | } | |
121 | ||
e02ae387 PB |
122 | extern void enable_IR_x2apic(void); |
123 | ||
124 | extern int get_physical_broadcast(void); | |
125 | ||
126 | extern int lapic_get_maxlvt(void); | |
127 | extern void clear_local_APIC(void); | |
128 | extern void disconnect_bsp_APIC(int virt_wire_setup); | |
129 | extern void disable_local_APIC(void); | |
130 | extern void lapic_shutdown(void); | |
131 | extern void sync_Arb_IDs(void); | |
132 | extern void init_bsp_APIC(void); | |
133 | extern void setup_local_APIC(void); | |
134 | extern void init_apic_mappings(void); | |
135 | void register_lapic_address(unsigned long address); | |
136 | extern void setup_boot_APIC_clock(void); | |
137 | extern void setup_secondary_APIC_clock(void); | |
138 | extern int APIC_init_uniprocessor(void); | |
139 | ||
140 | #ifdef CONFIG_X86_64 | |
141 | static inline int apic_force_enable(unsigned long addr) | |
142 | { | |
143 | return -1; | |
144 | } | |
145 | #else | |
146 | extern int apic_force_enable(unsigned long addr); | |
147 | #endif | |
148 | ||
149 | extern int apic_bsp_setup(bool upmode); | |
150 | extern void apic_ap_setup(void); | |
151 | ||
152 | /* | |
153 | * On 32bit this is mach-xxx local | |
154 | */ | |
155 | #ifdef CONFIG_X86_64 | |
156 | extern int apic_is_clustered_box(void); | |
157 | #else | |
158 | static inline int apic_is_clustered_box(void) | |
159 | { | |
160 | return 0; | |
161 | } | |
162 | #endif | |
163 | ||
164 | extern int setup_APIC_eilvt(u8 lvt_off, u8 vector, u8 msg_type, u8 mask); | |
165 | ||
166 | #else /* !CONFIG_X86_LOCAL_APIC */ | |
167 | static inline void lapic_shutdown(void) { } | |
168 | #define local_apic_timer_c2_ok 1 | |
169 | static inline void init_apic_mappings(void) { } | |
170 | static inline void disable_local_APIC(void) { } | |
171 | # define setup_boot_APIC_clock x86_init_noop | |
172 | # define setup_secondary_APIC_clock x86_init_noop | |
173 | #endif /* !CONFIG_X86_LOCAL_APIC */ | |
174 | ||
d0b03bd1 | 175 | #ifdef CONFIG_X86_X2APIC |
ce4e240c SS |
176 | /* |
177 | * Make previous memory operations globally visible before | |
178 | * sending the IPI through x2apic wrmsr. We need a serializing instruction or | |
179 | * mfence for this. | |
180 | */ | |
181 | static inline void x2apic_wrmsr_fence(void) | |
182 | { | |
183 | asm volatile("mfence" : : : "memory"); | |
184 | } | |
185 | ||
13c88fb5 SS |
186 | static inline void native_apic_msr_write(u32 reg, u32 v) |
187 | { | |
188 | if (reg == APIC_DFR || reg == APIC_ID || reg == APIC_LDR || | |
189 | reg == APIC_LVR) | |
190 | return; | |
191 | ||
192 | wrmsr(APIC_BASE_MSR + (reg >> 4), v, 0); | |
193 | } | |
194 | ||
0ab711ae MT |
195 | static inline void native_apic_msr_eoi_write(u32 reg, u32 v) |
196 | { | |
197 | wrmsr(APIC_BASE_MSR + (APIC_EOI >> 4), APIC_EOI_ACK, 0); | |
198 | } | |
199 | ||
13c88fb5 SS |
200 | static inline u32 native_apic_msr_read(u32 reg) |
201 | { | |
0059b243 | 202 | u64 msr; |
13c88fb5 SS |
203 | |
204 | if (reg == APIC_DFR) | |
205 | return -1; | |
206 | ||
0059b243 AK |
207 | rdmsrl(APIC_BASE_MSR + (reg >> 4), msr); |
208 | return (u32)msr; | |
13c88fb5 SS |
209 | } |
210 | ||
c1eeb2de YL |
211 | static inline void native_x2apic_wait_icr_idle(void) |
212 | { | |
213 | /* no need to wait for icr idle in x2apic */ | |
214 | return; | |
215 | } | |
216 | ||
217 | static inline u32 native_safe_x2apic_wait_icr_idle(void) | |
218 | { | |
219 | /* no need to wait for icr idle in x2apic */ | |
220 | return 0; | |
221 | } | |
222 | ||
223 | static inline void native_x2apic_icr_write(u32 low, u32 id) | |
224 | { | |
225 | wrmsrl(APIC_BASE_MSR + (APIC_ICR >> 4), ((__u64) id) << 32 | low); | |
226 | } | |
227 | ||
228 | static inline u64 native_x2apic_icr_read(void) | |
229 | { | |
230 | unsigned long val; | |
231 | ||
232 | rdmsrl(APIC_BASE_MSR + (APIC_ICR >> 4), val); | |
233 | return val; | |
234 | } | |
235 | ||
81a46dd8 | 236 | extern int x2apic_mode; |
fc1edaf9 | 237 | extern int x2apic_phys; |
d524165c | 238 | extern void __init check_x2apic(void); |
659006bf | 239 | extern void x2apic_setup(void); |
a11b5abe YL |
240 | static inline int x2apic_enabled(void) |
241 | { | |
62436a4d | 242 | return boot_cpu_has(X86_FEATURE_X2APIC) && apic_is_x2apic_enabled(); |
a11b5abe | 243 | } |
fc1edaf9 | 244 | |
62436a4d | 245 | #define x2apic_supported() (boot_cpu_has(X86_FEATURE_X2APIC)) |
e02ae387 | 246 | #else /* !CONFIG_X86_X2APIC */ |
55eae7de | 247 | static inline void check_x2apic(void) { } |
659006bf | 248 | static inline void x2apic_setup(void) { } |
55eae7de | 249 | static inline int x2apic_enabled(void) { return 0; } |
cf6567fe | 250 | |
81a46dd8 | 251 | #define x2apic_mode (0) |
81a46dd8 | 252 | #define x2apic_supported() (0) |
e02ae387 | 253 | #endif /* !CONFIG_X86_X2APIC */ |
67c5fc5c | 254 | |
1f75ed0c IM |
255 | #ifdef CONFIG_X86_64 |
256 | #define SET_APIC_ID(x) (apic->set_apic_id(x)) | |
257 | #else | |
258 | ||
1f75ed0c IM |
259 | #endif |
260 | ||
e2780a68 IM |
261 | /* |
262 | * Copyright 2004 James Cleverdon, IBM. | |
263 | * Subject to the GNU Public License, v.2 | |
264 | * | |
265 | * Generic APIC sub-arch data struct. | |
266 | * | |
267 | * Hacked for x86-64 by James Cleverdon from i386 architecture code by | |
268 | * Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and | |
269 | * James Cleverdon. | |
270 | */ | |
be163a15 | 271 | struct apic { |
e2780a68 IM |
272 | char *name; |
273 | ||
274 | int (*probe)(void); | |
275 | int (*acpi_madt_oem_check)(char *oem_id, char *oem_table_id); | |
fa63030e | 276 | int (*apic_id_valid)(int apicid); |
e2780a68 IM |
277 | int (*apic_id_registered)(void); |
278 | ||
279 | u32 irq_delivery_mode; | |
280 | u32 irq_dest_mode; | |
281 | ||
282 | const struct cpumask *(*target_cpus)(void); | |
283 | ||
284 | int disable_esr; | |
285 | ||
286 | int dest_logical; | |
7abc0753 | 287 | unsigned long (*check_apicid_used)(physid_mask_t *map, int apicid); |
e2780a68 | 288 | |
1ac322d0 SS |
289 | void (*vector_allocation_domain)(int cpu, struct cpumask *retmask, |
290 | const struct cpumask *mask); | |
e2780a68 IM |
291 | void (*init_apic_ldr)(void); |
292 | ||
7abc0753 | 293 | void (*ioapic_phys_id_map)(physid_mask_t *phys_map, physid_mask_t *retmap); |
e2780a68 IM |
294 | |
295 | void (*setup_apic_routing)(void); | |
e2780a68 | 296 | int (*cpu_present_to_apicid)(int mps_cpu); |
7abc0753 | 297 | void (*apicid_to_cpu_present)(int phys_apicid, physid_mask_t *retmap); |
e11dadab | 298 | int (*check_phys_apicid_present)(int phys_apicid); |
e2780a68 IM |
299 | int (*phys_pkg_id)(int cpuid_apic, int index_msb); |
300 | ||
e2780a68 IM |
301 | unsigned int (*get_apic_id)(unsigned long x); |
302 | unsigned long (*set_apic_id)(unsigned int id); | |
e2780a68 | 303 | |
ff164324 AG |
304 | int (*cpu_mask_to_apicid_and)(const struct cpumask *cpumask, |
305 | const struct cpumask *andmask, | |
306 | unsigned int *apicid); | |
e2780a68 IM |
307 | |
308 | /* ipi */ | |
539da787 | 309 | void (*send_IPI)(int cpu, int vector); |
e2780a68 IM |
310 | void (*send_IPI_mask)(const struct cpumask *mask, int vector); |
311 | void (*send_IPI_mask_allbutself)(const struct cpumask *mask, | |
312 | int vector); | |
313 | void (*send_IPI_allbutself)(int vector); | |
314 | void (*send_IPI_all)(int vector); | |
315 | void (*send_IPI_self)(int vector); | |
316 | ||
317 | /* wakeup_secondary_cpu */ | |
1f5bcabf | 318 | int (*wakeup_secondary_cpu)(int apicid, unsigned long start_eip); |
e2780a68 | 319 | |
e2780a68 IM |
320 | void (*inquire_remote_apic)(int apicid); |
321 | ||
322 | /* apic ops */ | |
323 | u32 (*read)(u32 reg); | |
324 | void (*write)(u32 reg, u32 v); | |
2a43195d MT |
325 | /* |
326 | * ->eoi_write() has the same signature as ->write(). | |
327 | * | |
328 | * Drivers can support both ->eoi_write() and ->write() by passing the same | |
329 | * callback value. Kernel can override ->eoi_write() and fall back | |
330 | * on write for EOI. | |
331 | */ | |
332 | void (*eoi_write)(u32 reg, u32 v); | |
e2780a68 IM |
333 | u64 (*icr_read)(void); |
334 | void (*icr_write)(u32 low, u32 high); | |
335 | void (*wait_icr_idle)(void); | |
336 | u32 (*safe_wait_icr_idle)(void); | |
acb8bc09 TH |
337 | |
338 | #ifdef CONFIG_X86_32 | |
339 | /* | |
340 | * Called very early during boot from get_smp_config(). It should | |
341 | * return the logical apicid. x86_[bios]_cpu_to_apicid is | |
342 | * initialized before this function is called. | |
343 | * | |
344 | * If logical apicid can't be determined that early, the function | |
345 | * may return BAD_APICID. Logical apicid will be configured after | |
346 | * init_apic_ldr() while bringing up CPUs. Note that NUMA affinity | |
347 | * won't be applied properly during early boot in this case. | |
348 | */ | |
349 | int (*x86_32_early_logical_apicid)(int cpu); | |
350 | #endif | |
e2780a68 IM |
351 | }; |
352 | ||
0917c01f IM |
353 | /* |
354 | * Pointer to the local APIC driver in use on this system (there's | |
355 | * always just one such driver in use - the kernel decides via an | |
356 | * early probing process which one it picks - and then sticks to it): | |
357 | */ | |
be163a15 | 358 | extern struct apic *apic; |
0917c01f | 359 | |
107e0e0c SS |
360 | /* |
361 | * APIC drivers are probed based on how they are listed in the .apicdrivers | |
362 | * section. So the order is important and enforced by the ordering | |
363 | * of different apic driver files in the Makefile. | |
364 | * | |
365 | * For the files having two apic drivers, we use apic_drivers() | |
366 | * to enforce the order with in them. | |
367 | */ | |
368 | #define apic_driver(sym) \ | |
75fdd155 | 369 | static const struct apic *__apicdrivers_##sym __used \ |
107e0e0c SS |
370 | __aligned(sizeof(struct apic *)) \ |
371 | __section(.apicdrivers) = { &sym } | |
372 | ||
373 | #define apic_drivers(sym1, sym2) \ | |
374 | static struct apic *__apicdrivers_##sym1##sym2[2] __used \ | |
375 | __aligned(sizeof(struct apic *)) \ | |
376 | __section(.apicdrivers) = { &sym1, &sym2 } | |
377 | ||
378 | extern struct apic *__apicdrivers[], *__apicdrivers_end[]; | |
379 | ||
0917c01f IM |
380 | /* |
381 | * APIC functionality to boot other CPUs - only used on SMP: | |
382 | */ | |
383 | #ifdef CONFIG_SMP | |
2b6163bf | 384 | extern int wakeup_secondary_cpu_via_nmi(int apicid, unsigned long start_eip); |
0917c01f | 385 | #endif |
e2780a68 | 386 | |
d674cd19 | 387 | #ifdef CONFIG_X86_LOCAL_APIC |
346b46be | 388 | |
e2780a68 IM |
389 | static inline u32 apic_read(u32 reg) |
390 | { | |
391 | return apic->read(reg); | |
392 | } | |
393 | ||
394 | static inline void apic_write(u32 reg, u32 val) | |
395 | { | |
396 | apic->write(reg, val); | |
397 | } | |
398 | ||
2a43195d MT |
399 | static inline void apic_eoi(void) |
400 | { | |
401 | apic->eoi_write(APIC_EOI, APIC_EOI_ACK); | |
402 | } | |
403 | ||
e2780a68 IM |
404 | static inline u64 apic_icr_read(void) |
405 | { | |
406 | return apic->icr_read(); | |
407 | } | |
408 | ||
409 | static inline void apic_icr_write(u32 low, u32 high) | |
410 | { | |
411 | apic->icr_write(low, high); | |
412 | } | |
413 | ||
414 | static inline void apic_wait_icr_idle(void) | |
415 | { | |
416 | apic->wait_icr_idle(); | |
417 | } | |
418 | ||
419 | static inline u32 safe_apic_wait_icr_idle(void) | |
420 | { | |
421 | return apic->safe_wait_icr_idle(); | |
422 | } | |
423 | ||
1551df64 MT |
424 | extern void __init apic_set_eoi_write(void (*eoi_write)(u32 reg, u32 v)); |
425 | ||
d674cd19 CG |
426 | #else /* CONFIG_X86_LOCAL_APIC */ |
427 | ||
428 | static inline u32 apic_read(u32 reg) { return 0; } | |
429 | static inline void apic_write(u32 reg, u32 val) { } | |
2a43195d | 430 | static inline void apic_eoi(void) { } |
d674cd19 CG |
431 | static inline u64 apic_icr_read(void) { return 0; } |
432 | static inline void apic_icr_write(u32 low, u32 high) { } | |
433 | static inline void apic_wait_icr_idle(void) { } | |
434 | static inline u32 safe_apic_wait_icr_idle(void) { return 0; } | |
1551df64 | 435 | static inline void apic_set_eoi_write(void (*eoi_write)(u32 reg, u32 v)) {} |
d674cd19 CG |
436 | |
437 | #endif /* CONFIG_X86_LOCAL_APIC */ | |
e2780a68 IM |
438 | |
439 | static inline void ack_APIC_irq(void) | |
440 | { | |
441 | /* | |
442 | * ack_APIC_irq() actually gets compiled as a single instruction | |
443 | * ... yummie. | |
444 | */ | |
2a43195d | 445 | apic_eoi(); |
e2780a68 IM |
446 | } |
447 | ||
448 | static inline unsigned default_get_apic_id(unsigned long x) | |
449 | { | |
450 | unsigned int ver = GET_APIC_VERSION(apic_read(APIC_LVR)); | |
451 | ||
42937e81 | 452 | if (APIC_XAPIC(ver) || boot_cpu_has(X86_FEATURE_EXTD_APICID)) |
e2780a68 IM |
453 | return (x >> 24) & 0xFF; |
454 | else | |
455 | return (x >> 24) & 0x0F; | |
456 | } | |
457 | ||
458 | /* | |
6ab1b27c | 459 | * Warm reset vector position: |
e2780a68 | 460 | */ |
6ab1b27c DR |
461 | #define TRAMPOLINE_PHYS_LOW 0x467 |
462 | #define TRAMPOLINE_PHYS_HIGH 0x469 | |
e2780a68 | 463 | |
2b6163bf | 464 | #ifdef CONFIG_X86_64 |
e2780a68 IM |
465 | extern void apic_send_IPI_self(int vector); |
466 | ||
e2780a68 IM |
467 | DECLARE_PER_CPU(int, x2apic_extra_bits); |
468 | ||
469 | extern int default_cpu_present_to_apicid(int mps_cpu); | |
e11dadab | 470 | extern int default_check_phys_apicid_present(int phys_apicid); |
e2780a68 IM |
471 | #endif |
472 | ||
838312be | 473 | extern void generic_bigsmp_probe(void); |
e2780a68 IM |
474 | |
475 | ||
476 | #ifdef CONFIG_X86_LOCAL_APIC | |
477 | ||
478 | #include <asm/smp.h> | |
479 | ||
480 | #define APIC_DFR_VALUE (APIC_DFR_FLAT) | |
481 | ||
482 | static inline const struct cpumask *default_target_cpus(void) | |
483 | { | |
484 | #ifdef CONFIG_SMP | |
485 | return cpu_online_mask; | |
486 | #else | |
487 | return cpumask_of(0); | |
488 | #endif | |
489 | } | |
490 | ||
bf721d3a AG |
491 | static inline const struct cpumask *online_target_cpus(void) |
492 | { | |
493 | return cpu_online_mask; | |
494 | } | |
495 | ||
0816b0f0 | 496 | DECLARE_EARLY_PER_CPU_READ_MOSTLY(u16, x86_bios_cpu_apicid); |
e2780a68 IM |
497 | |
498 | ||
499 | static inline unsigned int read_apic_id(void) | |
500 | { | |
501 | unsigned int reg; | |
502 | ||
503 | reg = apic_read(APIC_ID); | |
504 | ||
505 | return apic->get_apic_id(reg); | |
506 | } | |
507 | ||
fa63030e DB |
508 | static inline int default_apic_id_valid(int apicid) |
509 | { | |
b7157acf | 510 | return (apicid < 255); |
fa63030e DB |
511 | } |
512 | ||
a491cc90 JL |
513 | extern int default_acpi_madt_oem_check(char *, char *); |
514 | ||
e2780a68 IM |
515 | extern void default_setup_apic_routing(void); |
516 | ||
9844ab11 CG |
517 | extern struct apic apic_noop; |
518 | ||
e2780a68 | 519 | #ifdef CONFIG_X86_32 |
2c1b284e | 520 | |
acb8bc09 TH |
521 | static inline int noop_x86_32_early_logical_apicid(int cpu) |
522 | { | |
523 | return BAD_APICID; | |
524 | } | |
525 | ||
e2780a68 IM |
526 | /* |
527 | * Set up the logical destination ID. | |
528 | * | |
529 | * Intel recommends to set DFR, LDR and TPR before enabling | |
530 | * an APIC. See e.g. "AP-388 82489DX User's Manual" (Intel | |
531 | * document number 292116). So here it goes... | |
532 | */ | |
533 | extern void default_init_apic_ldr(void); | |
534 | ||
535 | static inline int default_apic_id_registered(void) | |
536 | { | |
537 | return physid_isset(read_apic_id(), phys_cpu_present_map); | |
538 | } | |
539 | ||
f56e5034 YL |
540 | static inline int default_phys_pkg_id(int cpuid_apic, int index_msb) |
541 | { | |
542 | return cpuid_apic >> index_msb; | |
543 | } | |
544 | ||
f56e5034 YL |
545 | #endif |
546 | ||
ff164324 | 547 | static inline int |
a5a39156 AG |
548 | flat_cpu_mask_to_apicid_and(const struct cpumask *cpumask, |
549 | const struct cpumask *andmask, | |
550 | unsigned int *apicid) | |
e2780a68 | 551 | { |
a5a39156 AG |
552 | unsigned long cpu_mask = cpumask_bits(cpumask)[0] & |
553 | cpumask_bits(andmask)[0] & | |
554 | cpumask_bits(cpu_online_mask)[0] & | |
555 | APIC_ALL_CPUS; | |
556 | ||
ff164324 AG |
557 | if (likely(cpu_mask)) { |
558 | *apicid = (unsigned int)cpu_mask; | |
559 | return 0; | |
560 | } else { | |
561 | return -EINVAL; | |
562 | } | |
563 | } | |
564 | ||
ff164324 | 565 | extern int |
6398268d | 566 | default_cpu_mask_to_apicid_and(const struct cpumask *cpumask, |
ff164324 AG |
567 | const struct cpumask *andmask, |
568 | unsigned int *apicid); | |
6398268d | 569 | |
b39f25a8 | 570 | static inline void |
1ac322d0 SS |
571 | flat_vector_allocation_domain(int cpu, struct cpumask *retmask, |
572 | const struct cpumask *mask) | |
9d8e1066 AG |
573 | { |
574 | /* Careful. Some cpus do not strictly honor the set of cpus | |
575 | * specified in the interrupt destination when using lowest | |
576 | * priority interrupt delivery mode. | |
577 | * | |
578 | * In particular there was a hyperthreading cpu observed to | |
579 | * deliver interrupts to the wrong hyperthread when only one | |
580 | * hyperthread was specified in the interrupt desitination. | |
581 | */ | |
582 | cpumask_clear(retmask); | |
583 | cpumask_bits(retmask)[0] = APIC_ALL_CPUS; | |
584 | } | |
585 | ||
b39f25a8 | 586 | static inline void |
1ac322d0 SS |
587 | default_vector_allocation_domain(int cpu, struct cpumask *retmask, |
588 | const struct cpumask *mask) | |
9d8e1066 AG |
589 | { |
590 | cpumask_copy(retmask, cpumask_of(cpu)); | |
591 | } | |
592 | ||
7abc0753 | 593 | static inline unsigned long default_check_apicid_used(physid_mask_t *map, int apicid) |
e2780a68 | 594 | { |
7abc0753 | 595 | return physid_isset(apicid, *map); |
e2780a68 IM |
596 | } |
597 | ||
7abc0753 | 598 | static inline void default_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap) |
e2780a68 | 599 | { |
7abc0753 | 600 | *retmap = *phys_map; |
e2780a68 IM |
601 | } |
602 | ||
e2780a68 IM |
603 | static inline int __default_cpu_present_to_apicid(int mps_cpu) |
604 | { | |
605 | if (mps_cpu < nr_cpu_ids && cpu_present(mps_cpu)) | |
606 | return (int)per_cpu(x86_bios_cpu_apicid, mps_cpu); | |
607 | else | |
608 | return BAD_APICID; | |
609 | } | |
610 | ||
611 | static inline int | |
e11dadab | 612 | __default_check_phys_apicid_present(int phys_apicid) |
e2780a68 | 613 | { |
e11dadab | 614 | return physid_isset(phys_apicid, phys_cpu_present_map); |
e2780a68 IM |
615 | } |
616 | ||
617 | #ifdef CONFIG_X86_32 | |
618 | static inline int default_cpu_present_to_apicid(int mps_cpu) | |
619 | { | |
620 | return __default_cpu_present_to_apicid(mps_cpu); | |
621 | } | |
622 | ||
623 | static inline int | |
e11dadab | 624 | default_check_phys_apicid_present(int phys_apicid) |
e2780a68 | 625 | { |
e11dadab | 626 | return __default_check_phys_apicid_present(phys_apicid); |
e2780a68 IM |
627 | } |
628 | #else | |
629 | extern int default_cpu_present_to_apicid(int mps_cpu); | |
e11dadab | 630 | extern int default_check_phys_apicid_present(int phys_apicid); |
e2780a68 IM |
631 | #endif |
632 | ||
e2780a68 | 633 | #endif /* CONFIG_X86_LOCAL_APIC */ |
eddc0e92 SA |
634 | extern void irq_enter(void); |
635 | extern void irq_exit(void); | |
636 | ||
637 | static inline void entering_irq(void) | |
638 | { | |
639 | irq_enter(); | |
640 | exit_idle(); | |
641 | } | |
642 | ||
643 | static inline void entering_ack_irq(void) | |
644 | { | |
eddc0e92 | 645 | entering_irq(); |
7834c103 | 646 | ack_APIC_irq(); |
eddc0e92 SA |
647 | } |
648 | ||
6dc17876 TG |
649 | static inline void ipi_entering_ack_irq(void) |
650 | { | |
651 | ack_APIC_irq(); | |
652 | irq_enter(); | |
653 | } | |
654 | ||
eddc0e92 SA |
655 | static inline void exiting_irq(void) |
656 | { | |
657 | irq_exit(); | |
658 | } | |
659 | ||
660 | static inline void exiting_ack_irq(void) | |
661 | { | |
662 | irq_exit(); | |
663 | /* Ack only at the end to avoid potential reentry */ | |
664 | ack_APIC_irq(); | |
665 | } | |
e2780a68 | 666 | |
17405453 YY |
667 | extern void ioapic_zap_locks(void); |
668 | ||
1965aae3 | 669 | #endif /* _ASM_X86_APIC_H */ |