1 /*-
2 * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29 #ifndef _X86_APICVAR_H_
30 #define _X86_APICVAR_H_
31
32 /*
33 * Local && I/O APIC variable definitions.
34 */
35
36 /*
37 * Layout of local APIC interrupt vectors:
38 *
39 * 0xff (255) +-------------+
40 * | | 15 (Spurious / IPIs / Local Interrupts)
41 * 0xf0 (240) +-------------+
42 * | | 14 (I/O Interrupts / Timer)
43 * 0xe0 (224) +-------------+
44 * | | 13 (I/O Interrupts)
45 * 0xd0 (208) +-------------+
46 * | | 12 (I/O Interrupts)
47 * 0xc0 (192) +-------------+
48 * | | 11 (I/O Interrupts)
49 * 0xb0 (176) +-------------+
50 * | | 10 (I/O Interrupts)
51 * 0xa0 (160) +-------------+
52 * | | 9 (I/O Interrupts)
53 * 0x90 (144) +-------------+
54 * | | 8 (I/O Interrupts / System Calls)
55 * 0x80 (128) +-------------+
56 * | | 7 (I/O Interrupts)
57 * 0x70 (112) +-------------+
58 * | | 6 (I/O Interrupts)
59 * 0x60 (96) +-------------+
60 * | | 5 (I/O Interrupts)
61 * 0x50 (80) +-------------+
62 * | | 4 (I/O Interrupts)
63 * 0x40 (64) +-------------+
64 * | | 3 (I/O Interrupts)
65 * 0x30 (48) +-------------+
66 * | | 2 (ATPIC Interrupts)
67 * 0x20 (32) +-------------+
68 * | | 1 (Exceptions, traps, faults, etc.)
69 * 0x10 (16) +-------------+
70 * | | 0 (Exceptions, traps, faults, etc.)
71 * 0x00 (0) +-------------+
72 *
73 * Note: 0x80 needs to be handled specially and not allocated to an
74 * I/O device!
75 */
76
77 #define MAX_APIC_ID 0xfe
78 #define APIC_ID_ALL 0xff
79
80 /* I/O Interrupts are used for external devices such as ISA, PCI, etc. */
81 #define APIC_IO_INTS (IDT_IO_INTS + 16)
82 #define APIC_NUM_IOINTS 191
83
84 /* The timer interrupt is used for clock handling and drives hardclock, etc. */
85 #define APIC_TIMER_INT (APIC_IO_INTS + APIC_NUM_IOINTS)
86
87 /*
88 ********************* !!! WARNING !!! ******************************
89 * Each local apic has an interrupt receive fifo that is two entries deep
90 * for each interrupt priority class (higher 4 bits of interrupt vector).
91 * Once the fifo is full the APIC can no longer receive interrupts for this
92 * class and sending IPIs from other CPUs will be blocked.
93 * To avoid deadlocks there should be no more than two IPI interrupts
94 * pending at the same time.
95 * Currently this is guaranteed by dividing the IPIs in two groups that have
96 * each at most one IPI interrupt pending. The first group is protected by the
97 * smp_ipi_mtx and waits for the completion of the IPI (Only one IPI user
98 * at a time) The second group uses a single interrupt and a bitmap to avoid
99 * redundant IPI interrupts.
100 */
101
102 /* Interrupts for local APIC LVT entries other than the timer. */
103 #define APIC_LOCAL_INTS 240
104 #define APIC_ERROR_INT APIC_LOCAL_INTS
105 #define APIC_THERMAL_INT (APIC_LOCAL_INTS + 1)
106 #define APIC_CMC_INT (APIC_LOCAL_INTS + 2)
107 #define APIC_IPI_INTS (APIC_LOCAL_INTS + 3)
108
109 #define IPI_RENDEZVOUS (APIC_IPI_INTS) /* Inter-CPU rendezvous. */
110 #define IPI_INVLTLB (APIC_IPI_INTS + 1) /* TLB Shootdown IPIs */
111 #define IPI_INVLPG (APIC_IPI_INTS + 2)
112 #define IPI_INVLRNG (APIC_IPI_INTS + 3)
113 #define IPI_INVLCACHE (APIC_IPI_INTS + 4)
114 /* Vector to handle bitmap based IPIs */
115 #define IPI_BITMAP_VECTOR (APIC_IPI_INTS + 5)
116
117 /* IPIs handled by IPI_BITMAP_VECTOR */
118 #define IPI_AST 0 /* Generate software trap. */
119 #define IPI_PREEMPT 1
120 #define IPI_HARDCLOCK 2
121 #define IPI_BITMAP_LAST IPI_HARDCLOCK
122 #define IPI_IS_BITMAPED(x) ((x) <= IPI_BITMAP_LAST)
123
124 #define IPI_STOP (APIC_IPI_INTS + 6) /* Stop CPU until restarted. */
125 #define IPI_SUSPEND (APIC_IPI_INTS + 7) /* Suspend CPU until restarted. */
126 #ifdef __i386__
127 #define IPI_LAZYPMAP (APIC_IPI_INTS + 8) /* Lazy pmap release. */
128 #define IPI_DYN_FIRST (APIC_IPI_INTS + 9)
129 #else
130 #define IPI_DYN_FIRST (APIC_IPI_INTS + 8)
131 #endif
132 #define IPI_DYN_LAST (253) /* IPIs allocated at runtime */
133
134 /*
135 * IPI_STOP_HARD does not need to occupy a slot in the IPI vector space since
136 * it is delivered using an NMI anyways.
137 */
138 #define IPI_NMI_FIRST 254
139 #define IPI_TRACE 254 /* Interrupt for tracing. */
140 #define IPI_STOP_HARD 255 /* Stop CPU with a NMI. */
141
142 /*
143 * The spurious interrupt can share the priority class with the IPIs since
144 * it is not a normal interrupt. (Does not use the APIC's interrupt fifo)
145 */
146 #define APIC_SPURIOUS_INT 255
147
148 #ifndef LOCORE
149
150 #define APIC_IPI_DEST_SELF -1
151 #define APIC_IPI_DEST_ALL -2
152 #define APIC_IPI_DEST_OTHERS -3
153
154 #define APIC_BUS_UNKNOWN -1
155 #define APIC_BUS_ISA 0
156 #define APIC_BUS_EISA 1
157 #define APIC_BUS_PCI 2
158 #define APIC_BUS_MAX APIC_BUS_PCI
159
160 #define IRQ_EXTINT (NUM_IO_INTS + 1)
161 #define IRQ_NMI (NUM_IO_INTS + 2)
162 #define IRQ_SMI (NUM_IO_INTS + 3)
163 #define IRQ_DISABLED (NUM_IO_INTS + 4)
164
165 /*
166 * An APIC enumerator is a psuedo bus driver that enumerates APIC's including
167 * CPU's and I/O APIC's.
168 */
169 struct apic_enumerator {
170 const char *apic_name;
171 int (*apic_probe)(void);
172 int (*apic_probe_cpus)(void);
173 int (*apic_setup_local)(void);
174 int (*apic_setup_io)(void);
175 SLIST_ENTRY(apic_enumerator) apic_next;
176 };
177
178 inthand_t
179 IDTVEC(apic_isr1), IDTVEC(apic_isr2), IDTVEC(apic_isr3),
180 IDTVEC(apic_isr4), IDTVEC(apic_isr5), IDTVEC(apic_isr6),
181 IDTVEC(apic_isr7), IDTVEC(cmcint), IDTVEC(errorint),
182 IDTVEC(spuriousint), IDTVEC(timerint);
183
184 extern vm_paddr_t lapic_paddr;
185 extern int apic_cpuids[];
186
187 void apic_register_enumerator(struct apic_enumerator *enumerator);
188 void *ioapic_create(vm_paddr_t addr, int32_t apic_id, int intbase);
189 int ioapic_disable_pin(void *cookie, u_int pin);
190 int ioapic_get_vector(void *cookie, u_int pin);
191 void ioapic_register(void *cookie);
192 int ioapic_remap_vector(void *cookie, u_int pin, int vector);
193 int ioapic_set_bus(void *cookie, u_int pin, int bus_type);
194 int ioapic_set_extint(void *cookie, u_int pin);
195 int ioapic_set_nmi(void *cookie, u_int pin);
196 int ioapic_set_polarity(void *cookie, u_int pin, enum intr_polarity pol);
197 int ioapic_set_triggermode(void *cookie, u_int pin,
198 enum intr_trigger trigger);
199 int ioapic_set_smi(void *cookie, u_int pin);
200
201 /*
202 * Struct containing pointers to APIC functions whose
203 * implementation is run time selectable.
204 */
205 struct apic_ops {
206 void (*create)(u_int, int);
207 void (*init)(vm_paddr_t);
208 void (*xapic_mode)(void);
209 void (*setup)(int);
210 void (*dump)(const char *);
211 void (*disable)(void);
212 void (*eoi)(void);
213 int (*id)(void);
214 int (*intr_pending)(u_int);
215 void (*set_logical_id)(u_int, u_int, u_int);
216 u_int (*cpuid)(u_int);
217
218 /* Vectors */
219 u_int (*alloc_vector)(u_int, u_int);
220 u_int (*alloc_vectors)(u_int, u_int *, u_int, u_int);
221 void (*enable_vector)(u_int, u_int);
222 void (*disable_vector)(u_int, u_int);
223 void (*free_vector)(u_int, u_int, u_int);
224
225
226 /* PMC */
227 int (*enable_pmc)(void);
228 void (*disable_pmc)(void);
229 void (*reenable_pmc)(void);
230
231 /* CMC */
232 void (*enable_cmc)(void);
233
234 /* IPI */
235 void (*ipi_raw)(register_t, u_int);
236 void (*ipi_vectored)(u_int, int);
237 int (*ipi_wait)(int);
238 int (*ipi_alloc)(inthand_t *ipifunc);
239 void (*ipi_free)(int vector);
240
241 /* LVT */
242 int (*set_lvt_mask)(u_int, u_int, u_char);
243 int (*set_lvt_mode)(u_int, u_int, u_int32_t);
244 int (*set_lvt_polarity)(u_int, u_int, enum intr_polarity);
245 int (*set_lvt_triggermode)(u_int, u_int, enum intr_trigger);
246 };
247
248 extern struct apic_ops apic_ops;
249
250 static inline void
lapic_create(u_int apic_id,int boot_cpu)251 lapic_create(u_int apic_id, int boot_cpu)
252 {
253
254 apic_ops.create(apic_id, boot_cpu);
255 }
256
257 static inline void
lapic_init(vm_paddr_t addr)258 lapic_init(vm_paddr_t addr)
259 {
260
261 apic_ops.init(addr);
262 }
263
264 static inline void
lapic_xapic_mode(void)265 lapic_xapic_mode(void)
266 {
267
268 apic_ops.xapic_mode();
269 }
270
271 static inline void
lapic_setup(int boot)272 lapic_setup(int boot)
273 {
274
275 apic_ops.setup(boot);
276 }
277
278 static inline void
lapic_dump(const char * str)279 lapic_dump(const char *str)
280 {
281
282 apic_ops.dump(str);
283 }
284
285 static inline void
lapic_disable(void)286 lapic_disable(void)
287 {
288
289 apic_ops.disable();
290 }
291
292 static inline void
lapic_eoi(void)293 lapic_eoi(void)
294 {
295
296 apic_ops.eoi();
297 }
298
299 static inline int
lapic_id(void)300 lapic_id(void)
301 {
302
303 return (apic_ops.id());
304 }
305
306 static inline int
lapic_intr_pending(u_int vector)307 lapic_intr_pending(u_int vector)
308 {
309
310 return (apic_ops.intr_pending(vector));
311 }
312
313 /* XXX: UNUSED */
314 static inline void
lapic_set_logical_id(u_int apic_id,u_int cluster,u_int cluster_id)315 lapic_set_logical_id(u_int apic_id, u_int cluster, u_int cluster_id)
316 {
317
318 apic_ops.set_logical_id(apic_id, cluster, cluster_id);
319 }
320
321 static inline u_int
apic_cpuid(u_int apic_id)322 apic_cpuid(u_int apic_id)
323 {
324
325 return (apic_ops.cpuid(apic_id));
326 }
327
328 static inline u_int
apic_alloc_vector(u_int apic_id,u_int irq)329 apic_alloc_vector(u_int apic_id, u_int irq)
330 {
331
332 return (apic_ops.alloc_vector(apic_id, irq));
333 }
334
335 static inline u_int
apic_alloc_vectors(u_int apic_id,u_int * irqs,u_int count,u_int align)336 apic_alloc_vectors(u_int apic_id, u_int *irqs, u_int count, u_int align)
337 {
338
339 return (apic_ops.alloc_vectors(apic_id, irqs, count, align));
340 }
341
342 static inline void
apic_enable_vector(u_int apic_id,u_int vector)343 apic_enable_vector(u_int apic_id, u_int vector)
344 {
345
346 apic_ops.enable_vector(apic_id, vector);
347 }
348
349 static inline void
apic_disable_vector(u_int apic_id,u_int vector)350 apic_disable_vector(u_int apic_id, u_int vector)
351 {
352
353 apic_ops.disable_vector(apic_id, vector);
354 }
355
356 static inline void
apic_free_vector(u_int apic_id,u_int vector,u_int irq)357 apic_free_vector(u_int apic_id, u_int vector, u_int irq)
358 {
359
360 apic_ops.free_vector(apic_id, vector, irq);
361 }
362
363 static inline int
lapic_enable_pmc(void)364 lapic_enable_pmc(void)
365 {
366
367 return (apic_ops.enable_pmc());
368 }
369
370 static inline void
lapic_disable_pmc(void)371 lapic_disable_pmc(void)
372 {
373
374 apic_ops.disable_pmc();
375 }
376
377 static inline void
lapic_reenable_pmc(void)378 lapic_reenable_pmc(void)
379 {
380
381 apic_ops.reenable_pmc();
382 }
383
384 static inline void
lapic_enable_cmc(void)385 lapic_enable_cmc(void)
386 {
387
388 apic_ops.enable_cmc();
389 }
390
391 static inline void
lapic_ipi_raw(register_t icrlo,u_int dest)392 lapic_ipi_raw(register_t icrlo, u_int dest)
393 {
394
395 apic_ops.ipi_raw(icrlo, dest);
396 }
397
398 static inline void
lapic_ipi_vectored(u_int vector,int dest)399 lapic_ipi_vectored(u_int vector, int dest)
400 {
401
402 apic_ops.ipi_vectored(vector, dest);
403 }
404
405 static inline int
lapic_ipi_wait(int delay)406 lapic_ipi_wait(int delay)
407 {
408
409 return (apic_ops.ipi_wait(delay));
410 }
411
412 static inline int
lapic_ipi_alloc(inthand_t * ipifunc)413 lapic_ipi_alloc(inthand_t *ipifunc)
414 {
415
416 return (apic_ops.ipi_alloc(ipifunc));
417 }
418
419 static inline void
lapic_ipi_free(int vector)420 lapic_ipi_free(int vector)
421 {
422
423 return (apic_ops.ipi_free(vector));
424 }
425
426 static inline int
lapic_set_lvt_mask(u_int apic_id,u_int lvt,u_char masked)427 lapic_set_lvt_mask(u_int apic_id, u_int lvt, u_char masked)
428 {
429
430 return (apic_ops.set_lvt_mask(apic_id, lvt, masked));
431 }
432
433 static inline int
lapic_set_lvt_mode(u_int apic_id,u_int lvt,u_int32_t mode)434 lapic_set_lvt_mode(u_int apic_id, u_int lvt, u_int32_t mode)
435 {
436
437 return (apic_ops.set_lvt_mode(apic_id, lvt, mode));
438 }
439
440 static inline int
lapic_set_lvt_polarity(u_int apic_id,u_int lvt,enum intr_polarity pol)441 lapic_set_lvt_polarity(u_int apic_id, u_int lvt, enum intr_polarity pol)
442 {
443
444 return (apic_ops.set_lvt_polarity(apic_id, lvt, pol));
445 }
446
447 static inline int
lapic_set_lvt_triggermode(u_int apic_id,u_int lvt,enum intr_trigger trigger)448 lapic_set_lvt_triggermode(u_int apic_id, u_int lvt, enum intr_trigger trigger)
449 {
450
451 return (apic_ops.set_lvt_triggermode(apic_id, lvt, trigger));
452 }
453
454 void lapic_handle_cmc(void);
455 void lapic_handle_error(void);
456 void lapic_handle_intr(int vector, struct trapframe *frame);
457 void lapic_handle_timer(struct trapframe *frame);
458 void hv_vector_handler(struct trapframe *frame);
459
460 extern int x2apic_mode;
461 extern int lapic_eoi_suppression;
462
463 #ifdef _SYS_SYSCTL_H_
464 SYSCTL_DECL(_hw_apic);
465 #endif
466
467 #endif /* !LOCORE */
468 #endif /* _X86_APICVAR_H_ */
469