1/*-
2 * Copyright (c) 2001 Michael Smith
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 unchanged lines hidden (view full) ---
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: head/sys/dev/acpica/acpi_powerres.c 78993 2001-06-29 20:32:29Z msmith $
27 */
28
29#include "opt_acpi.h" /* XXX trim includes */
30#include <sys/param.h>
31#include <sys/kernel.h>
32#include <sys/proc.h>
33#include <sys/lock.h>
34#include <sys/malloc.h>
--- 37 unchanged lines hidden (view full) ---
72MALLOC_DEFINE(M_ACPIPWR, "acpipwr", "ACPI power resources");
73
74/*
75 * Hooks for the ACPI CA debugging infrastructure
76 */
77#define _COMPONENT ACPI_POWER
78MODULE_NAME("POWERRES")
79
80/*
81 * A relationship between a power resource and a consumer.
82 */
83struct acpi_powerreference {
84 struct acpi_powerconsumer *ar_consumer;
85 struct acpi_powerresource *ar_resource;
86 TAILQ_ENTRY(acpi_powerreference) ar_rlink; /* link on resource list */
87 TAILQ_ENTRY(acpi_powerreference) ar_clink; /* link on consumer */
--- 13 unchanged lines hidden (view full) ---
101 * A power resource.
102 */
103struct acpi_powerresource {
104 TAILQ_ENTRY(acpi_powerresource) ap_link;
105 TAILQ_HEAD(,acpi_powerreference) ap_references;
106 ACPI_HANDLE ap_resource; /* the resource's handle */
107 ACPI_INTEGER ap_systemlevel;
108 ACPI_INTEGER ap_order;
109 int ap_state;
110#define ACPI_PWR_OFF 0
111#define ACPI_PWR_ON 1
112};
113
114TAILQ_HEAD(acpi_powerresource_list, acpi_powerresource) acpi_powerresources;
115TAILQ_HEAD(acpi_powerconsumer_list, acpi_powerconsumer) acpi_powerconsumers;
116
117static ACPI_STATUS acpi_pwr_register_consumer(ACPI_HANDLE consumer);
118static ACPI_STATUS acpi_pwr_deregister_consumer(ACPI_HANDLE consumer);
119static ACPI_STATUS acpi_pwr_register_resource(ACPI_HANDLE res);
--- 46 unchanged lines hidden (view full) ---
166
167 /* get the Power Resource object */
168 if ((status = acpi_EvaluateIntoBuffer(res, NULL, NULL, &buf)) != AE_OK) {
169 DEBUG_PRINT(TRACE_OBJECTS, ("no power resource object\n"));
170 goto out;
171 }
172 obj = buf.Pointer;
173 if (obj->Common.Type != ACPI_TYPE_POWER) {
174 DEBUG_PRINT(TRACE_OBJECTS, ("bad power resource object\n"));
175 status = AE_TYPE;
176 goto out;
177 }
178 rp->ap_systemlevel = obj->PowerResource.SystemLevel;
179 rp->ap_order = obj->PowerResource.ResourceOrder;
180
181 /* get the current state of the resource */
182 if ((status = acpi_EvaluateInteger(rp->ap_resource, "_STA", &rp->ap_state)) != AE_OK) {
183 /* XXX is this an error? */
184 DEBUG_PRINT(TRACE_OBJECTS, ("can't get current power resource state\n"));
185 goto out;
186 }
187
188 /* sort the resource into the list */
189 status = AE_OK;
190 srp = TAILQ_FIRST(&acpi_powerresources);
191 if ((srp == NULL) || (rp->ap_order < srp->ap_order)) {
192 TAILQ_INSERT_HEAD(&acpi_powerresources, rp, ap_link);
193 goto out;
194 }
195 TAILQ_FOREACH(srp, &acpi_powerresources, ap_link)
196 if (rp->ap_order < srp->ap_order) {
197 TAILQ_INSERT_BEFORE(srp, rp, ap_link);
198 goto out;
199 }
200 TAILQ_INSERT_TAIL(&acpi_powerresources, rp, ap_link);
201 DEBUG_PRINT(TRACE_OBJECTS, ("registered power resource %s\n", acpi_name(res)));
202
203 out:
204 if (obj != NULL)
205 AcpiOsFree(obj);
206 if ((status != AE_OK) && (rp != NULL))
207 free(rp, M_ACPIPWR);
208 return_ACPI_STATUS(status);
209}
210
--- 181 unchanged lines hidden (view full) ---
392 } else {
393 reslist_object = NULL;
394 }
395
396 /*
397 * Now we are ready to switch, so kill off any current power resource references.
398 */
399 res_changed = 0;
400 TAILQ_FOREACH(pr, &pc->ac_references, ar_clink) {
401 TAILQ_REMOVE(&pr->ar_resource->ap_references, pr, ar_rlink);
402 res_changed = 1;
403 }
404
405 /*
406 * Add new power resource references, if we have any. Traverse the
407 * package that we got from evaluating reslist_handle, and look up each
408 * of the resources that are referenced.
409 */
410 if (reslist_object != NULL) {
--- 30 unchanged lines hidden (view full) ---
441/*
442 * Called to create a reference between a power consumer and a power resource
443 * identified in the object.
444 */
445static void
446acpi_pwr_reference_resource(ACPI_OBJECT *obj, void *arg)
447{
448 struct acpi_powerconsumer *pc = (struct acpi_powerconsumer *)arg;
449
450 FUNCTION_TRACE(__func__);
451
452 DEBUG_PRINT(TRACE_OBJECTS, ("called to create a reference using object type %d\n",
453 obj->Type));
454
455 return_VOID;
456}
457
458
459/*
460 * Switch power resources to conform to the desired state.
461 *
462 * Consumers may have modified the power resource list in an arbitrary
--- 7 unchanged lines hidden (view full) ---
470 int cur;
471
472 FUNCTION_TRACE(__func__);
473
474 /*
475 * Sweep the list forwards turning things on.
476 */
477 TAILQ_FOREACH(rp, &acpi_powerresources, ap_link) {
478 if (rp->ap_state != ACPI_PWR_ON)
479 continue; /* not turning this one on */
480
481 /* we could cache this if we trusted it not to change under us */
482 if ((status = acpi_EvaluateInteger(rp->ap_resource, "_STA", &cur)) != AE_OK) {
483 DEBUG_PRINT(TRACE_OBJECTS, ("can't get status of %s - %d\n",
484 acpi_name(rp->ap_resource), status));
485 continue; /* XXX is this correct? Always switch if in doubt? */
486 }
487
488 /*
489 * Switch if required. Note that we ignore the result of the switch
490 * effort; we don't know what to do if it fails, so checking wouldn't
491 * help much.
492 */
493 if (cur != ACPI_PWR_ON)
494 AcpiEvaluateObject(rp->ap_resource, "_ON", NULL, NULL);
495 }
496
497 /*
498 * Sweep the list backwards turning things off.
499 */
500 TAILQ_FOREACH_REVERSE(rp, &acpi_powerresources, acpi_powerresource_list, ap_link) {
501 if (rp->ap_state != ACPI_PWR_OFF)
502 continue; /* not turning this one off */
503
504 /* we could cache this if we trusted it not to change under us */
505 if ((status = acpi_EvaluateInteger(rp->ap_resource, "_STA", &cur)) != AE_OK) {
506 DEBUG_PRINT(TRACE_OBJECTS, ("can't get status of %s - %d\n",
507 acpi_name(rp->ap_resource), status));
508 continue; /* XXX is this correct? Always switch if in doubt? */
509 }
510
511 /*
512 * Switch if required. Note that we ignore the result of the switch
513 * effort; we don't know what to do if it fails, so checking wouldn't
514 * help much.
515 */
516 if (cur != ACPI_PWR_OFF)
517 AcpiEvaluateObject(rp->ap_resource, "_OFF", NULL, NULL);
518 }
519 return_ACPI_STATUS(AE_OK);
520}
521
522/*
523 * Find a power resource's control structure.
524 */
525static struct acpi_powerresource *
--- 28 unchanged lines hidden ---
2 * Copyright (c) 2001 Michael Smith
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 unchanged lines hidden (view full) ---
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: head/sys/dev/acpica/acpi_powerres.c 78993 2001-06-29 20:32:29Z msmith $
27 */
28
29#include "opt_acpi.h" /* XXX trim includes */
30#include <sys/param.h>
31#include <sys/kernel.h>
32#include <sys/proc.h>
33#include <sys/lock.h>
34#include <sys/malloc.h>
--- 37 unchanged lines hidden (view full) ---
72MALLOC_DEFINE(M_ACPIPWR, "acpipwr", "ACPI power resources");
73
74/*
75 * Hooks for the ACPI CA debugging infrastructure
76 */
77#define _COMPONENT ACPI_POWER
78MODULE_NAME("POWERRES")
79
80/*
81 * A relationship between a power resource and a consumer.
82 */
83struct acpi_powerreference {
84 struct acpi_powerconsumer *ar_consumer;
85 struct acpi_powerresource *ar_resource;
86 TAILQ_ENTRY(acpi_powerreference) ar_rlink; /* link on resource list */
87 TAILQ_ENTRY(acpi_powerreference) ar_clink; /* link on consumer */
--- 13 unchanged lines hidden (view full) ---
101 * A power resource.
102 */
103struct acpi_powerresource {
104 TAILQ_ENTRY(acpi_powerresource) ap_link;
105 TAILQ_HEAD(,acpi_powerreference) ap_references;
106 ACPI_HANDLE ap_resource; /* the resource's handle */
107 ACPI_INTEGER ap_systemlevel;
108 ACPI_INTEGER ap_order;
109 int ap_state;
110#define ACPI_PWR_OFF 0
111#define ACPI_PWR_ON 1
112};
113
114TAILQ_HEAD(acpi_powerresource_list, acpi_powerresource) acpi_powerresources;
115TAILQ_HEAD(acpi_powerconsumer_list, acpi_powerconsumer) acpi_powerconsumers;
116
117static ACPI_STATUS acpi_pwr_register_consumer(ACPI_HANDLE consumer);
118static ACPI_STATUS acpi_pwr_deregister_consumer(ACPI_HANDLE consumer);
119static ACPI_STATUS acpi_pwr_register_resource(ACPI_HANDLE res);
--- 46 unchanged lines hidden (view full) ---
166
167 /* get the Power Resource object */
168 if ((status = acpi_EvaluateIntoBuffer(res, NULL, NULL, &buf)) != AE_OK) {
169 DEBUG_PRINT(TRACE_OBJECTS, ("no power resource object\n"));
170 goto out;
171 }
172 obj = buf.Pointer;
173 if (obj->Common.Type != ACPI_TYPE_POWER) {
174 DEBUG_PRINT(TRACE_OBJECTS, ("bad power resource object\n"));
175 status = AE_TYPE;
176 goto out;
177 }
178 rp->ap_systemlevel = obj->PowerResource.SystemLevel;
179 rp->ap_order = obj->PowerResource.ResourceOrder;
180
181 /* get the current state of the resource */
182 if ((status = acpi_EvaluateInteger(rp->ap_resource, "_STA", &rp->ap_state)) != AE_OK) {
183 /* XXX is this an error? */
184 DEBUG_PRINT(TRACE_OBJECTS, ("can't get current power resource state\n"));
185 goto out;
186 }
187
188 /* sort the resource into the list */
189 status = AE_OK;
190 srp = TAILQ_FIRST(&acpi_powerresources);
191 if ((srp == NULL) || (rp->ap_order < srp->ap_order)) {
192 TAILQ_INSERT_HEAD(&acpi_powerresources, rp, ap_link);
193 goto out;
194 }
195 TAILQ_FOREACH(srp, &acpi_powerresources, ap_link)
196 if (rp->ap_order < srp->ap_order) {
197 TAILQ_INSERT_BEFORE(srp, rp, ap_link);
198 goto out;
199 }
200 TAILQ_INSERT_TAIL(&acpi_powerresources, rp, ap_link);
201 DEBUG_PRINT(TRACE_OBJECTS, ("registered power resource %s\n", acpi_name(res)));
202
203 out:
204 if (obj != NULL)
205 AcpiOsFree(obj);
206 if ((status != AE_OK) && (rp != NULL))
207 free(rp, M_ACPIPWR);
208 return_ACPI_STATUS(status);
209}
210
--- 181 unchanged lines hidden (view full) ---
392 } else {
393 reslist_object = NULL;
394 }
395
396 /*
397 * Now we are ready to switch, so kill off any current power resource references.
398 */
399 res_changed = 0;
400 TAILQ_FOREACH(pr, &pc->ac_references, ar_clink) {
401 TAILQ_REMOVE(&pr->ar_resource->ap_references, pr, ar_rlink);
402 res_changed = 1;
403 }
404
405 /*
406 * Add new power resource references, if we have any. Traverse the
407 * package that we got from evaluating reslist_handle, and look up each
408 * of the resources that are referenced.
409 */
410 if (reslist_object != NULL) {
--- 30 unchanged lines hidden (view full) ---
441/*
442 * Called to create a reference between a power consumer and a power resource
443 * identified in the object.
444 */
445static void
446acpi_pwr_reference_resource(ACPI_OBJECT *obj, void *arg)
447{
448 struct acpi_powerconsumer *pc = (struct acpi_powerconsumer *)arg;
449
450 FUNCTION_TRACE(__func__);
451
452 DEBUG_PRINT(TRACE_OBJECTS, ("called to create a reference using object type %d\n",
453 obj->Type));
454
455 return_VOID;
456}
457
458
459/*
460 * Switch power resources to conform to the desired state.
461 *
462 * Consumers may have modified the power resource list in an arbitrary
--- 7 unchanged lines hidden (view full) ---
470 int cur;
471
472 FUNCTION_TRACE(__func__);
473
474 /*
475 * Sweep the list forwards turning things on.
476 */
477 TAILQ_FOREACH(rp, &acpi_powerresources, ap_link) {
478 if (rp->ap_state != ACPI_PWR_ON)
479 continue; /* not turning this one on */
480
481 /* we could cache this if we trusted it not to change under us */
482 if ((status = acpi_EvaluateInteger(rp->ap_resource, "_STA", &cur)) != AE_OK) {
483 DEBUG_PRINT(TRACE_OBJECTS, ("can't get status of %s - %d\n",
484 acpi_name(rp->ap_resource), status));
485 continue; /* XXX is this correct? Always switch if in doubt? */
486 }
487
488 /*
489 * Switch if required. Note that we ignore the result of the switch
490 * effort; we don't know what to do if it fails, so checking wouldn't
491 * help much.
492 */
493 if (cur != ACPI_PWR_ON)
494 AcpiEvaluateObject(rp->ap_resource, "_ON", NULL, NULL);
495 }
496
497 /*
498 * Sweep the list backwards turning things off.
499 */
500 TAILQ_FOREACH_REVERSE(rp, &acpi_powerresources, acpi_powerresource_list, ap_link) {
501 if (rp->ap_state != ACPI_PWR_OFF)
502 continue; /* not turning this one off */
503
504 /* we could cache this if we trusted it not to change under us */
505 if ((status = acpi_EvaluateInteger(rp->ap_resource, "_STA", &cur)) != AE_OK) {
506 DEBUG_PRINT(TRACE_OBJECTS, ("can't get status of %s - %d\n",
507 acpi_name(rp->ap_resource), status));
508 continue; /* XXX is this correct? Always switch if in doubt? */
509 }
510
511 /*
512 * Switch if required. Note that we ignore the result of the switch
513 * effort; we don't know what to do if it fails, so checking wouldn't
514 * help much.
515 */
516 if (cur != ACPI_PWR_OFF)
517 AcpiEvaluateObject(rp->ap_resource, "_OFF", NULL, NULL);
518 }
519 return_ACPI_STATUS(AE_OK);
520}
521
522/*
523 * Find a power resource's control structure.
524 */
525static struct acpi_powerresource *
--- 28 unchanged lines hidden ---