1 | /* $NetBSD: acpi_cpu.c,v 1.50 2014/02/25 18:30:09 pooka Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2010, 2011 Jukka Ruohonen <jruohonen@iki.fi> |
5 | * All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * |
11 | * 1. Redistributions of source code must retain the above copyright |
12 | * notice, this list of conditions and the following disclaimer. |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
27 | * SUCH DAMAGE. |
28 | */ |
29 | #include <sys/cdefs.h> |
30 | __KERNEL_RCSID(0, "$NetBSD: acpi_cpu.c,v 1.50 2014/02/25 18:30:09 pooka Exp $" ); |
31 | |
32 | #include <sys/param.h> |
33 | #include <sys/cpu.h> |
34 | #include <sys/evcnt.h> |
35 | #include <sys/kernel.h> |
36 | #include <sys/kmem.h> |
37 | #include <sys/module.h> |
38 | #include <sys/mutex.h> |
39 | #include <sys/sysctl.h> |
40 | #include <sys/cpufreq.h> |
41 | |
42 | #include <dev/acpi/acpireg.h> |
43 | #include <dev/acpi/acpivar.h> |
44 | #include <dev/acpi/acpi_cpu.h> |
45 | |
46 | #include <machine/acpi_machdep.h> |
47 | #include <machine/cpuvar.h> |
48 | |
49 | #define _COMPONENT ACPI_BUS_COMPONENT |
50 | ACPI_MODULE_NAME ("acpi_cpu" ) |
51 | |
52 | static int acpicpu_match(device_t, cfdata_t, void *); |
53 | static void acpicpu_attach(device_t, device_t, void *); |
54 | static int acpicpu_detach(device_t, int); |
55 | static int acpicpu_once_attach(void); |
56 | static int acpicpu_once_detach(void); |
57 | static void acpicpu_start(device_t); |
58 | static void acpicpu_sysctl(device_t); |
59 | |
60 | static ACPI_STATUS acpicpu_object(ACPI_HANDLE, struct acpicpu_object *); |
61 | static uint32_t acpicpu_cap(struct acpicpu_softc *); |
62 | static ACPI_STATUS acpicpu_cap_osc(struct acpicpu_softc *, |
63 | uint32_t, uint32_t *); |
64 | static void acpicpu_notify(ACPI_HANDLE, uint32_t, void *); |
65 | static bool acpicpu_suspend(device_t, const pmf_qual_t *); |
66 | static bool acpicpu_resume(device_t, const pmf_qual_t *); |
67 | static void acpicpu_evcnt_attach(device_t); |
68 | static void acpicpu_evcnt_detach(device_t); |
69 | static void acpicpu_debug_print(device_t); |
70 | static const char *acpicpu_debug_print_method_c(uint8_t); |
71 | static const char *acpicpu_debug_print_method_pt(uint8_t); |
72 | static const char *acpicpu_debug_print_dep(uint32_t); |
73 | |
74 | static uint32_t acpicpu_count = 0; |
75 | struct acpicpu_softc **acpicpu_sc = NULL; |
76 | static struct sysctllog *acpicpu_log = NULL; |
77 | static bool acpicpu_dynamic = true; |
78 | static bool acpicpu_passive = true; |
79 | |
80 | static const struct { |
81 | const char *manu; |
82 | const char *prod; |
83 | const char *vers; |
84 | } acpicpu_quirks[] = { |
85 | { "Supermicro" , "PDSMi-LN4" , "0123456789" }, |
86 | { "ASUSTeK Computer INC." , "M2A-MX" , "Rev 1.xx" }, |
87 | }; |
88 | |
89 | CFATTACH_DECL_NEW(acpicpu, sizeof(struct acpicpu_softc), |
90 | acpicpu_match, acpicpu_attach, acpicpu_detach, NULL); |
91 | |
92 | static int |
93 | acpicpu_match(device_t parent, cfdata_t match, void *aux) |
94 | { |
95 | const char *manu, *prod, *vers; |
96 | struct cpu_info *ci; |
97 | size_t i; |
98 | |
99 | if (acpi_softc == NULL) |
100 | return 0; |
101 | |
102 | manu = pmf_get_platform("board-vendor" ); |
103 | prod = pmf_get_platform("board-product" ); |
104 | vers = pmf_get_platform("board-version" ); |
105 | |
106 | if (manu != NULL && prod != NULL && vers != NULL) { |
107 | |
108 | for (i = 0; i < __arraycount(acpicpu_quirks); i++) { |
109 | |
110 | if (strcasecmp(acpicpu_quirks[i].manu, manu) == 0 && |
111 | strcasecmp(acpicpu_quirks[i].prod, prod) == 0 && |
112 | strcasecmp(acpicpu_quirks[i].vers, vers) == 0) |
113 | return 0; |
114 | } |
115 | } |
116 | |
117 | ci = acpicpu_md_match(parent, match, aux); |
118 | |
119 | if (ci == NULL) |
120 | return 0; |
121 | |
122 | if (acpi_match_cpu_info(ci) == NULL) |
123 | return 0; |
124 | |
125 | return 10; |
126 | } |
127 | |
128 | static void |
129 | acpicpu_attach(device_t parent, device_t self, void *aux) |
130 | { |
131 | struct acpicpu_softc *sc = device_private(self); |
132 | struct cpu_info *ci; |
133 | ACPI_HANDLE hdl; |
134 | cpuid_t id; |
135 | int rv; |
136 | |
137 | ci = acpicpu_md_attach(parent, self, aux); |
138 | |
139 | if (ci == NULL) |
140 | return; |
141 | |
142 | sc->sc_ci = ci; |
143 | sc->sc_dev = self; |
144 | sc->sc_cold = true; |
145 | |
146 | hdl = acpi_match_cpu_info(ci); |
147 | |
148 | if (hdl == NULL) { |
149 | aprint_normal(": failed to match processor\n" ); |
150 | return; |
151 | } |
152 | |
153 | sc->sc_node = acpi_match_node(hdl); |
154 | |
155 | if (acpicpu_once_attach() != 0) { |
156 | aprint_normal(": failed to initialize\n" ); |
157 | return; |
158 | } |
159 | |
160 | KASSERT(acpi_softc != NULL); |
161 | KASSERT(acpicpu_sc != NULL); |
162 | KASSERT(sc->sc_node != NULL); |
163 | |
164 | id = sc->sc_ci->ci_acpiid; |
165 | |
166 | if (acpicpu_sc[id] != NULL) { |
167 | aprint_normal(": already attached\n" ); |
168 | return; |
169 | } |
170 | |
171 | aprint_naive("\n" ); |
172 | aprint_normal(": ACPI CPU\n" ); |
173 | |
174 | rv = acpicpu_object(sc->sc_node->ad_handle, &sc->sc_object); |
175 | |
176 | if (ACPI_FAILURE(rv)) |
177 | aprint_verbose_dev(self, "failed to obtain CPU object\n" ); |
178 | |
179 | acpicpu_count++; |
180 | acpicpu_sc[id] = sc; |
181 | |
182 | sc->sc_cap = acpicpu_cap(sc); |
183 | sc->sc_ncpus = acpi_md_ncpus(); |
184 | sc->sc_flags = acpicpu_md_flags(); |
185 | |
186 | KASSERT(acpicpu_count <= sc->sc_ncpus); |
187 | KASSERT(sc->sc_node->ad_device == NULL); |
188 | |
189 | sc->sc_node->ad_device = self; |
190 | mutex_init(&sc->sc_mtx, MUTEX_DEFAULT, IPL_NONE); |
191 | |
192 | acpicpu_cstate_attach(self); |
193 | acpicpu_pstate_attach(self); |
194 | acpicpu_tstate_attach(self); |
195 | |
196 | acpicpu_debug_print(self); |
197 | acpicpu_evcnt_attach(self); |
198 | |
199 | (void)config_interrupts(self, acpicpu_start); |
200 | (void)acpi_register_notify(sc->sc_node, acpicpu_notify); |
201 | (void)pmf_device_register(self, acpicpu_suspend, acpicpu_resume); |
202 | } |
203 | |
204 | static int |
205 | acpicpu_detach(device_t self, int flags) |
206 | { |
207 | struct acpicpu_softc *sc = device_private(self); |
208 | |
209 | sc->sc_cold = true; |
210 | |
211 | acpicpu_evcnt_detach(self); |
212 | acpi_deregister_notify(sc->sc_node); |
213 | |
214 | acpicpu_cstate_detach(self); |
215 | acpicpu_pstate_detach(self); |
216 | acpicpu_tstate_detach(self); |
217 | |
218 | mutex_destroy(&sc->sc_mtx); |
219 | sc->sc_node->ad_device = NULL; |
220 | |
221 | acpicpu_count--; |
222 | acpicpu_once_detach(); |
223 | |
224 | return 0; |
225 | } |
226 | |
227 | static int |
228 | acpicpu_once_attach(void) |
229 | { |
230 | struct acpicpu_softc *sc; |
231 | unsigned int i; |
232 | |
233 | if (acpicpu_count != 0) |
234 | return 0; |
235 | |
236 | KASSERT(acpicpu_sc == NULL); |
237 | KASSERT(acpicpu_log == NULL); |
238 | |
239 | acpicpu_sc = kmem_zalloc(maxcpus * sizeof(*sc), KM_SLEEP); |
240 | |
241 | if (acpicpu_sc == NULL) |
242 | return ENOMEM; |
243 | |
244 | for (i = 0; i < maxcpus; i++) |
245 | acpicpu_sc[i] = NULL; |
246 | |
247 | return 0; |
248 | } |
249 | |
250 | static int |
251 | acpicpu_once_detach(void) |
252 | { |
253 | struct acpicpu_softc *sc; |
254 | |
255 | if (acpicpu_count != 0) |
256 | return EDEADLK; |
257 | |
258 | cpufreq_deregister(); |
259 | |
260 | if (acpicpu_log != NULL) |
261 | sysctl_teardown(&acpicpu_log); |
262 | |
263 | if (acpicpu_sc != NULL) |
264 | kmem_free(acpicpu_sc, maxcpus * sizeof(*sc)); |
265 | |
266 | return 0; |
267 | } |
268 | |
269 | static void |
270 | acpicpu_start(device_t self) |
271 | { |
272 | struct acpicpu_softc *sc = device_private(self); |
273 | static uint32_t count = 0; |
274 | struct cpufreq cf; |
275 | uint32_t i; |
276 | |
277 | /* |
278 | * Run the state-specific initialization routines. These |
279 | * must run only once, after interrupts have been enabled, |
280 | * all CPUs are running, and all ACPI CPUs have attached. |
281 | */ |
282 | if (++count != acpicpu_count || acpicpu_count != sc->sc_ncpus) { |
283 | sc->sc_cold = false; |
284 | return; |
285 | } |
286 | |
287 | /* |
288 | * Set the last ACPI CPU as non-cold |
289 | * only after C-states are enabled. |
290 | */ |
291 | if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) |
292 | acpicpu_cstate_start(self); |
293 | |
294 | sc->sc_cold = false; |
295 | |
296 | if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) |
297 | acpicpu_pstate_start(self); |
298 | |
299 | if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) |
300 | acpicpu_tstate_start(self); |
301 | |
302 | acpicpu_sysctl(self); |
303 | aprint_debug_dev(self, "ACPI CPUs started\n" ); |
304 | |
305 | /* |
306 | * Register with cpufreq(9). |
307 | */ |
308 | if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) { |
309 | |
310 | (void)memset(&cf, 0, sizeof(struct cpufreq)); |
311 | |
312 | cf.cf_mp = false; |
313 | cf.cf_cookie = NULL; |
314 | cf.cf_get_freq = acpicpu_pstate_get; |
315 | cf.cf_set_freq = acpicpu_pstate_set; |
316 | cf.cf_state_count = sc->sc_pstate_count; |
317 | |
318 | (void)strlcpy(cf.cf_name, "acpicpu" , sizeof(cf.cf_name)); |
319 | |
320 | for (i = 0; i < sc->sc_pstate_count; i++) { |
321 | |
322 | if (sc->sc_pstate[i].ps_freq == 0) |
323 | continue; |
324 | |
325 | cf.cf_state[i].cfs_freq = sc->sc_pstate[i].ps_freq; |
326 | cf.cf_state[i].cfs_power = sc->sc_pstate[i].ps_power; |
327 | } |
328 | |
329 | if (cpufreq_register(&cf) != 0) |
330 | aprint_error_dev(self, "failed to register cpufreq\n" ); |
331 | } |
332 | } |
333 | |
334 | static void |
335 | acpicpu_sysctl(device_t self) |
336 | { |
337 | const struct sysctlnode *node; |
338 | int err; |
339 | |
340 | KASSERT(acpicpu_log == NULL); |
341 | |
342 | err = sysctl_createv(&acpicpu_log, 0, NULL, &node, |
343 | CTLFLAG_PERMANENT, CTLTYPE_NODE, "acpi" , NULL, |
344 | NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL); |
345 | |
346 | if (err != 0) |
347 | goto fail; |
348 | |
349 | err = sysctl_createv(&acpicpu_log, 0, &node, &node, |
350 | 0, CTLTYPE_NODE, "cpu" , SYSCTL_DESCR("ACPI CPU" ), |
351 | NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL); |
352 | |
353 | if (err != 0) |
354 | goto fail; |
355 | |
356 | err = sysctl_createv(&acpicpu_log, 0, &node, NULL, |
357 | CTLFLAG_READWRITE, CTLTYPE_BOOL, "dynamic" , |
358 | SYSCTL_DESCR("Dynamic states" ), NULL, 0, |
359 | &acpicpu_dynamic, 0, CTL_CREATE, CTL_EOL); |
360 | |
361 | if (err != 0) |
362 | goto fail; |
363 | |
364 | err = sysctl_createv(&acpicpu_log, 0, &node, NULL, |
365 | CTLFLAG_READWRITE, CTLTYPE_BOOL, "passive" , |
366 | SYSCTL_DESCR("Passive cooling" ), NULL, 0, |
367 | &acpicpu_passive, 0, CTL_CREATE, CTL_EOL); |
368 | |
369 | if (err != 0) |
370 | goto fail; |
371 | |
372 | return; |
373 | |
374 | fail: |
375 | aprint_error_dev(self, "failed to initialize sysctl (err %d)\n" , err); |
376 | } |
377 | |
378 | static ACPI_STATUS |
379 | acpicpu_object(ACPI_HANDLE hdl, struct acpicpu_object *ao) |
380 | { |
381 | ACPI_OBJECT *obj; |
382 | ACPI_BUFFER buf; |
383 | ACPI_STATUS rv; |
384 | |
385 | rv = acpi_eval_struct(hdl, NULL, &buf); |
386 | |
387 | if (ACPI_FAILURE(rv)) |
388 | goto out; |
389 | |
390 | obj = buf.Pointer; |
391 | |
392 | if (obj->Type != ACPI_TYPE_PROCESSOR) { |
393 | rv = AE_TYPE; |
394 | goto out; |
395 | } |
396 | |
397 | if (obj->Processor.ProcId > (uint32_t)maxcpus) { |
398 | rv = AE_LIMIT; |
399 | goto out; |
400 | } |
401 | |
402 | KDASSERT((uint64_t)obj->Processor.PblkAddress < UINT32_MAX); |
403 | |
404 | if (ao != NULL) { |
405 | ao->ao_procid = obj->Processor.ProcId; |
406 | ao->ao_pblklen = obj->Processor.PblkLength; |
407 | ao->ao_pblkaddr = obj->Processor.PblkAddress; |
408 | } |
409 | |
410 | out: |
411 | if (buf.Pointer != NULL) |
412 | ACPI_FREE(buf.Pointer); |
413 | |
414 | return rv; |
415 | } |
416 | |
417 | static uint32_t |
418 | acpicpu_cap(struct acpicpu_softc *sc) |
419 | { |
420 | uint32_t flags, cap = 0; |
421 | ACPI_STATUS rv; |
422 | |
423 | /* |
424 | * Query and set machine-dependent capabilities. |
425 | * Note that the Intel-specific _PDC method has |
426 | * already been evaluated. It was furthermore |
427 | * deprecated in the ACPI 3.0 in favor of _OSC. |
428 | */ |
429 | flags = acpi_md_pdc(); |
430 | rv = acpicpu_cap_osc(sc, flags, &cap); |
431 | |
432 | if (ACPI_FAILURE(rv) && rv != AE_NOT_FOUND) { |
433 | |
434 | aprint_error_dev(sc->sc_dev, "failed to evaluate " |
435 | "_OSC: %s\n" , AcpiFormatException(rv)); |
436 | } |
437 | |
438 | return (cap != 0) ? cap : flags; |
439 | } |
440 | |
441 | static ACPI_STATUS |
442 | acpicpu_cap_osc(struct acpicpu_softc *sc, uint32_t flags, uint32_t *val) |
443 | { |
444 | ACPI_OBJECT_LIST arg; |
445 | ACPI_OBJECT obj[4]; |
446 | ACPI_OBJECT *osc; |
447 | ACPI_BUFFER buf; |
448 | ACPI_STATUS rv; |
449 | uint32_t cap[2]; |
450 | uint32_t *ptr; |
451 | int i = 5; |
452 | |
453 | static uint8_t intel_uuid[16] = { |
454 | 0x16, 0xA6, 0x77, 0x40, 0x0C, 0x29, 0xBE, 0x47, |
455 | 0x9E, 0xBD, 0xD8, 0x70, 0x58, 0x71, 0x39, 0x53 |
456 | }; |
457 | |
458 | cap[0] = ACPI_OSC_QUERY; |
459 | cap[1] = flags; |
460 | |
461 | again: |
462 | arg.Count = 4; |
463 | arg.Pointer = obj; |
464 | |
465 | obj[0].Type = ACPI_TYPE_BUFFER; |
466 | obj[0].Buffer.Length = sizeof(intel_uuid); |
467 | obj[0].Buffer.Pointer = intel_uuid; |
468 | |
469 | obj[1].Type = ACPI_TYPE_INTEGER; |
470 | obj[1].Integer.Value = ACPICPU_PDC_REVID; |
471 | |
472 | obj[2].Type = ACPI_TYPE_INTEGER; |
473 | obj[2].Integer.Value = __arraycount(cap); |
474 | |
475 | obj[3].Type = ACPI_TYPE_BUFFER; |
476 | obj[3].Buffer.Length = sizeof(cap); |
477 | obj[3].Buffer.Pointer = (void *)cap; |
478 | |
479 | buf.Pointer = NULL; |
480 | buf.Length = ACPI_ALLOCATE_LOCAL_BUFFER; |
481 | |
482 | rv = AcpiEvaluateObject(sc->sc_node->ad_handle, "_OSC" , &arg, &buf); |
483 | |
484 | if (ACPI_FAILURE(rv)) |
485 | goto out; |
486 | |
487 | osc = buf.Pointer; |
488 | |
489 | if (osc->Type != ACPI_TYPE_BUFFER) { |
490 | rv = AE_TYPE; |
491 | goto out; |
492 | } |
493 | |
494 | if (osc->Buffer.Length != sizeof(cap)) { |
495 | rv = AE_BUFFER_OVERFLOW; |
496 | goto out; |
497 | } |
498 | |
499 | ptr = (uint32_t *)osc->Buffer.Pointer; |
500 | |
501 | if ((ptr[0] & ACPI_OSC_ERROR) != 0) { |
502 | rv = AE_ERROR; |
503 | goto out; |
504 | } |
505 | |
506 | if ((ptr[0] & (ACPI_OSC_ERROR_REV | ACPI_OSC_ERROR_UUID)) != 0) { |
507 | rv = AE_BAD_PARAMETER; |
508 | goto out; |
509 | } |
510 | |
511 | /* |
512 | * "It is strongly recommended that the OS evaluate |
513 | * _OSC with the Query Support Flag set until _OSC |
514 | * returns the Capabilities Masked bit clear, to |
515 | * negotiate the set of features to be granted to |
516 | * the OS for native support (ACPI 4.0, 6.2.10)." |
517 | */ |
518 | if ((ptr[0] & ACPI_OSC_ERROR_MASKED) != 0 && i >= 0) { |
519 | |
520 | ACPI_FREE(buf.Pointer); |
521 | i--; |
522 | |
523 | goto again; |
524 | } |
525 | |
526 | if ((cap[0] & ACPI_OSC_QUERY) != 0) { |
527 | |
528 | ACPI_FREE(buf.Pointer); |
529 | cap[0] &= ~ACPI_OSC_QUERY; |
530 | |
531 | goto again; |
532 | } |
533 | |
534 | /* |
535 | * It is permitted for _OSC to return all |
536 | * bits cleared, but this is specified to |
537 | * vary on per-device basis. Assume that |
538 | * everything rather than nothing will be |
539 | * supported in this case; we do not need |
540 | * the firmware to know the CPU features. |
541 | */ |
542 | *val = (ptr[1] != 0) ? ptr[1] : cap[1]; |
543 | |
544 | out: |
545 | if (buf.Pointer != NULL) |
546 | ACPI_FREE(buf.Pointer); |
547 | |
548 | return rv; |
549 | } |
550 | |
551 | static void |
552 | acpicpu_notify(ACPI_HANDLE hdl, uint32_t evt, void *aux) |
553 | { |
554 | ACPI_OSD_EXEC_CALLBACK func; |
555 | struct acpicpu_softc *sc; |
556 | device_t self = aux; |
557 | |
558 | sc = device_private(self); |
559 | |
560 | if (sc->sc_cold != false) |
561 | return; |
562 | |
563 | if (acpicpu_dynamic != true) |
564 | return; |
565 | |
566 | switch (evt) { |
567 | |
568 | case ACPICPU_C_NOTIFY: |
569 | |
570 | if ((sc->sc_flags & ACPICPU_FLAG_C) == 0) |
571 | return; |
572 | |
573 | func = acpicpu_cstate_callback; |
574 | break; |
575 | |
576 | case ACPICPU_P_NOTIFY: |
577 | |
578 | if ((sc->sc_flags & ACPICPU_FLAG_P) == 0) |
579 | return; |
580 | |
581 | func = acpicpu_pstate_callback; |
582 | break; |
583 | |
584 | case ACPICPU_T_NOTIFY: |
585 | |
586 | if ((sc->sc_flags & ACPICPU_FLAG_T) == 0) |
587 | return; |
588 | |
589 | func = acpicpu_tstate_callback; |
590 | break; |
591 | |
592 | default: |
593 | aprint_error_dev(sc->sc_dev, "unknown notify: 0x%02X\n" , evt); |
594 | return; |
595 | } |
596 | |
597 | (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, func, sc->sc_dev); |
598 | } |
599 | |
600 | static bool |
601 | acpicpu_suspend(device_t self, const pmf_qual_t *qual) |
602 | { |
603 | struct acpicpu_softc *sc = device_private(self); |
604 | |
605 | if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) |
606 | (void)acpicpu_cstate_suspend(self); |
607 | |
608 | if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) |
609 | (void)acpicpu_pstate_suspend(self); |
610 | |
611 | if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) |
612 | (void)acpicpu_tstate_suspend(self); |
613 | |
614 | sc->sc_cold = true; |
615 | |
616 | return true; |
617 | } |
618 | |
619 | static bool |
620 | acpicpu_resume(device_t self, const pmf_qual_t *qual) |
621 | { |
622 | struct acpicpu_softc *sc = device_private(self); |
623 | static const int handler = OSL_NOTIFY_HANDLER; |
624 | |
625 | sc->sc_cold = false; |
626 | |
627 | if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) |
628 | (void)AcpiOsExecute(handler, acpicpu_cstate_resume, self); |
629 | |
630 | if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) |
631 | (void)AcpiOsExecute(handler, acpicpu_pstate_resume, self); |
632 | |
633 | if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) |
634 | (void)AcpiOsExecute(handler, acpicpu_tstate_resume, self); |
635 | |
636 | return true; |
637 | } |
638 | |
639 | static void |
640 | acpicpu_evcnt_attach(device_t self) |
641 | { |
642 | struct acpicpu_softc *sc = device_private(self); |
643 | struct acpicpu_cstate *cs; |
644 | struct acpicpu_pstate *ps; |
645 | struct acpicpu_tstate *ts; |
646 | const char *str; |
647 | uint32_t i; |
648 | |
649 | for (i = 0; i < __arraycount(sc->sc_cstate); i++) { |
650 | |
651 | cs = &sc->sc_cstate[i]; |
652 | |
653 | if (cs->cs_method == 0) |
654 | continue; |
655 | |
656 | str = "HALT" ; |
657 | |
658 | if (cs->cs_method == ACPICPU_C_STATE_FFH) |
659 | str = "MWAIT" ; |
660 | |
661 | if (cs->cs_method == ACPICPU_C_STATE_SYSIO) |
662 | str = "I/O" ; |
663 | |
664 | (void)snprintf(cs->cs_name, sizeof(cs->cs_name), |
665 | "C%d (%s)" , i, str); |
666 | |
667 | evcnt_attach_dynamic(&cs->cs_evcnt, EVCNT_TYPE_MISC, |
668 | NULL, device_xname(sc->sc_dev), cs->cs_name); |
669 | } |
670 | |
671 | for (i = 0; i < sc->sc_pstate_count; i++) { |
672 | |
673 | ps = &sc->sc_pstate[i]; |
674 | |
675 | if (ps->ps_freq == 0) |
676 | continue; |
677 | |
678 | (void)snprintf(ps->ps_name, sizeof(ps->ps_name), |
679 | "P%u (%u MHz)" , i, ps->ps_freq); |
680 | |
681 | evcnt_attach_dynamic(&ps->ps_evcnt, EVCNT_TYPE_MISC, |
682 | NULL, device_xname(sc->sc_dev), ps->ps_name); |
683 | } |
684 | |
685 | for (i = 0; i < sc->sc_tstate_count; i++) { |
686 | |
687 | ts = &sc->sc_tstate[i]; |
688 | |
689 | if (ts->ts_percent == 0) |
690 | continue; |
691 | |
692 | (void)snprintf(ts->ts_name, sizeof(ts->ts_name), |
693 | "T%u (%u %%)" , i, ts->ts_percent); |
694 | |
695 | evcnt_attach_dynamic(&ts->ts_evcnt, EVCNT_TYPE_MISC, |
696 | NULL, device_xname(sc->sc_dev), ts->ts_name); |
697 | } |
698 | } |
699 | |
700 | static void |
701 | acpicpu_evcnt_detach(device_t self) |
702 | { |
703 | struct acpicpu_softc *sc = device_private(self); |
704 | struct acpicpu_cstate *cs; |
705 | struct acpicpu_pstate *ps; |
706 | struct acpicpu_tstate *ts; |
707 | uint32_t i; |
708 | |
709 | for (i = 0; i < __arraycount(sc->sc_cstate); i++) { |
710 | |
711 | cs = &sc->sc_cstate[i]; |
712 | |
713 | if (cs->cs_method != 0) |
714 | evcnt_detach(&cs->cs_evcnt); |
715 | } |
716 | |
717 | for (i = 0; i < sc->sc_pstate_count; i++) { |
718 | |
719 | ps = &sc->sc_pstate[i]; |
720 | |
721 | if (ps->ps_freq != 0) |
722 | evcnt_detach(&ps->ps_evcnt); |
723 | } |
724 | |
725 | for (i = 0; i < sc->sc_tstate_count; i++) { |
726 | |
727 | ts = &sc->sc_tstate[i]; |
728 | |
729 | if (ts->ts_percent != 0) |
730 | evcnt_detach(&ts->ts_evcnt); |
731 | } |
732 | } |
733 | |
734 | static void |
735 | acpicpu_debug_print(device_t self) |
736 | { |
737 | struct acpicpu_softc *sc = device_private(self); |
738 | struct cpu_info *ci = sc->sc_ci; |
739 | struct acpicpu_cstate *cs; |
740 | struct acpicpu_pstate *ps; |
741 | struct acpicpu_tstate *ts; |
742 | static bool once = false; |
743 | struct acpicpu_dep *dep; |
744 | uint32_t i, method; |
745 | |
746 | if (once != true) { |
747 | |
748 | for (i = 0; i < __arraycount(sc->sc_cstate); i++) { |
749 | |
750 | cs = &sc->sc_cstate[i]; |
751 | |
752 | if (cs->cs_method == 0) |
753 | continue; |
754 | |
755 | aprint_verbose_dev(sc->sc_dev, "C%d: %3s, " |
756 | "lat %3u us, pow %5u mW%s\n" , i, |
757 | acpicpu_debug_print_method_c(cs->cs_method), |
758 | cs->cs_latency, cs->cs_power, |
759 | (cs->cs_flags != 0) ? ", bus master check" : "" ); |
760 | } |
761 | |
762 | method = sc->sc_pstate_control.reg_spaceid; |
763 | |
764 | for (i = 0; i < sc->sc_pstate_count; i++) { |
765 | |
766 | ps = &sc->sc_pstate[i]; |
767 | |
768 | if (ps->ps_freq == 0) |
769 | continue; |
770 | |
771 | aprint_verbose_dev(sc->sc_dev, "P%d: %3s, " |
772 | "lat %3u us, pow %5u mW, %4u MHz%s\n" , i, |
773 | acpicpu_debug_print_method_pt(method), |
774 | ps->ps_latency, ps->ps_power, ps->ps_freq, |
775 | (ps->ps_flags & ACPICPU_FLAG_P_TURBO) != 0 ? |
776 | ", turbo boost" : "" ); |
777 | } |
778 | |
779 | method = sc->sc_tstate_control.reg_spaceid; |
780 | |
781 | for (i = 0; i < sc->sc_tstate_count; i++) { |
782 | |
783 | ts = &sc->sc_tstate[i]; |
784 | |
785 | if (ts->ts_percent == 0) |
786 | continue; |
787 | |
788 | aprint_verbose_dev(sc->sc_dev, "T%u: %3s, " |
789 | "lat %3u us, pow %5u mW, %3u %%\n" , i, |
790 | acpicpu_debug_print_method_pt(method), |
791 | ts->ts_latency, ts->ts_power, ts->ts_percent); |
792 | } |
793 | |
794 | once = true; |
795 | } |
796 | |
797 | aprint_debug_dev(sc->sc_dev, "id %u, lapic id %u, " |
798 | "cap 0x%04x, flags 0x%08x\n" , ci->ci_acpiid, |
799 | (uint32_t)ci->ci_cpuid, sc->sc_cap, sc->sc_flags); |
800 | |
801 | if ((sc->sc_flags & ACPICPU_FLAG_C_DEP) != 0) { |
802 | |
803 | dep = &sc->sc_cstate_dep; |
804 | |
805 | aprint_debug_dev(sc->sc_dev, "C-state coordination: " |
806 | "%u CPUs, domain %u, type %s\n" , dep->dep_ncpus, |
807 | dep->dep_domain, acpicpu_debug_print_dep(dep->dep_type)); |
808 | } |
809 | |
810 | if ((sc->sc_flags & ACPICPU_FLAG_P_DEP) != 0) { |
811 | |
812 | dep = &sc->sc_pstate_dep; |
813 | |
814 | aprint_debug_dev(sc->sc_dev, "P-state coordination: " |
815 | "%u CPUs, domain %u, type %s\n" , dep->dep_ncpus, |
816 | dep->dep_domain, acpicpu_debug_print_dep(dep->dep_type)); |
817 | } |
818 | |
819 | if ((sc->sc_flags & ACPICPU_FLAG_T_DEP) != 0) { |
820 | |
821 | dep = &sc->sc_tstate_dep; |
822 | |
823 | aprint_debug_dev(sc->sc_dev, "T-state coordination: " |
824 | "%u CPUs, domain %u, type %s\n" , dep->dep_ncpus, |
825 | dep->dep_domain, acpicpu_debug_print_dep(dep->dep_type)); |
826 | } |
827 | } |
828 | |
829 | static const char * |
830 | acpicpu_debug_print_method_c(uint8_t val) |
831 | { |
832 | |
833 | if (val == ACPICPU_C_STATE_FFH) |
834 | return "FFH" ; |
835 | |
836 | if (val == ACPICPU_C_STATE_HALT) |
837 | return "HLT" ; |
838 | |
839 | if (val == ACPICPU_C_STATE_SYSIO) |
840 | return "I/O" ; |
841 | |
842 | return "???" ; |
843 | } |
844 | |
845 | static const char * |
846 | acpicpu_debug_print_method_pt(uint8_t val) |
847 | { |
848 | |
849 | if (val == ACPI_ADR_SPACE_SYSTEM_IO) |
850 | return "I/O" ; |
851 | |
852 | if (val == ACPI_ADR_SPACE_FIXED_HARDWARE) |
853 | return "FFH" ; |
854 | |
855 | return "???" ; |
856 | } |
857 | |
858 | static const char * |
859 | acpicpu_debug_print_dep(uint32_t val) |
860 | { |
861 | |
862 | switch (val) { |
863 | |
864 | case ACPICPU_DEP_SW_ALL: |
865 | return "SW_ALL" ; |
866 | |
867 | case ACPICPU_DEP_SW_ANY: |
868 | return "SW_ANY" ; |
869 | |
870 | case ACPICPU_DEP_HW_ALL: |
871 | return "HW_ALL" ; |
872 | |
873 | default: |
874 | return "unknown" ; |
875 | } |
876 | } |
877 | |
878 | MODULE(MODULE_CLASS_DRIVER, acpicpu, NULL); |
879 | |
880 | #ifdef _MODULE |
881 | #include "ioconf.c" |
882 | #endif |
883 | |
884 | static int |
885 | acpicpu_modcmd(modcmd_t cmd, void *aux) |
886 | { |
887 | int rv = 0; |
888 | |
889 | switch (cmd) { |
890 | |
891 | case MODULE_CMD_INIT: |
892 | |
893 | #ifdef _MODULE |
894 | rv = config_init_component(cfdriver_ioconf_acpicpu, |
895 | cfattach_ioconf_acpicpu, cfdata_ioconf_acpicpu); |
896 | #endif |
897 | break; |
898 | |
899 | case MODULE_CMD_FINI: |
900 | |
901 | #ifdef _MODULE |
902 | rv = config_fini_component(cfdriver_ioconf_acpicpu, |
903 | cfattach_ioconf_acpicpu, cfdata_ioconf_acpicpu); |
904 | #endif |
905 | break; |
906 | |
907 | default: |
908 | rv = ENOTTY; |
909 | } |
910 | |
911 | return rv; |
912 | } |
913 | |