diff options
Diffstat (limited to 'sys/dev/acpi/acpi_powerres.c')
| -rw-r--r-- | sys/dev/acpi/acpi_powerres.c | 754 |
1 files changed, 0 insertions, 754 deletions
diff --git a/sys/dev/acpi/acpi_powerres.c b/sys/dev/acpi/acpi_powerres.c deleted file mode 100644 index 3d489906be05..000000000000 --- a/sys/dev/acpi/acpi_powerres.c +++ /dev/null @@ -1,754 +0,0 @@ -/*- - * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@FreeBSD.org> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ - -#include "opt_acpi.h" -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/kernel.h> -#include <sys/bus.h> -#include <sys/malloc.h> - -#include <machine/bus.h> -#include <machine/resource.h> -#include <sys/rman.h> - -#include <dev/acpi/acpireg.h> -#include <dev/acpi/acpivar.h> - -#include <dev/acpi/aml/aml_amlmem.h> -#include <dev/acpi/aml/aml_common.h> -#include <dev/acpi/aml/aml_env.h> -#include <dev/acpi/aml/aml_evalobj.h> -#include <dev/acpi/aml/aml_name.h> -#include <dev/acpi/aml/aml_parse.h> -#include <dev/acpi/aml/aml_memman.h> - -static int acpi_powerres_register(struct aml_name *name, va_list ap); -static int acpi_powerres_add_device(struct aml_name *name, va_list ap); - -static void acpi_set_device_next_state(acpi_softc_t *sc, - struct acpi_powerres_device *device, - u_int8_t sleeping_state, - u_int8_t def_dstate); - -static char *powerres_statestr[2] = {"_OFF", "_ON"}; - -/* - * 7.3.3 Evaluates to the current device state. - */ -u_int8_t -acpi_get_current_device_state(struct aml_name *name) -{ - u_int8_t dstate; - struct aml_name *method; - union aml_object *ret; - struct aml_environ env; - - dstate = ACPI_D_STATE_D0; - method = aml_find_from_namespace(name, "_PSC"); - if (method == NULL) { - return (dstate); - } - - bzero(&env, sizeof(env)); - aml_local_stack_push(aml_local_stack_create()); - ret = aml_eval_name(&env, method); - dstate = ret->num.number; - aml_local_stack_delete(aml_local_stack_pop()); - return (dstate); -} - -static __inline struct acpi_powerres_device * -acpi_powerres_get_powerres_device(acpi_softc_t *sc, struct aml_name *name) -{ - struct acpi_powerres_device *device; - - LIST_FOREACH(device, &sc->acpi_powerres_devlist, links) { - if (device->name == name) { - return (device); - } - } - - return (NULL); -} - -/* - * 7.2.2-4: For the OS to put the device in the Dx device state. - */ -void -acpi_set_device_state(acpi_softc_t *sc, struct aml_name *name, u_int8_t dstate) -{ - char psx[5]; /* "_PSx" */ - struct acpi_powerres_info *powerres; - struct acpi_powerres_device_ref *device_ref; - struct acpi_powerres_device *device; - struct aml_name *method; - struct aml_environ env; - - if (dstate > ACPI_D_STATE_D3) { - return; - } - - device = acpi_powerres_get_powerres_device(sc, name); - if (device == NULL) { - return; - } - device->state = dstate; - - /* - * D3 state transition. We don't need to check PowerResource, - * just execute _PS3 control method of the device. - */ - if (dstate == ACPI_D_STATE_D3) { - goto method_execution; - } - - /* - * D0 - D2 state transition. - * All Power Resources referenced by elements 1 through N - * in _PRx of the device must be in the ON state. - * - */ - LIST_FOREACH(powerres, &sc->acpi_powerres_inflist, links) { - LIST_FOREACH(device_ref, &powerres->reflist[dstate], links) { - if (device_ref->device->name != name) { - continue; - } - if (powerres->state != ACPI_POWER_RESOURCE_ON) { - acpi_set_powerres_state(sc, powerres->name, - ACPI_POWER_RESOURCE_ON); - } - break; /* already found, goto next PowerResource */ - } - } - -method_execution: - /* - * If present, the _PSx control method is executed to set the - * device into the Dx device state. - */ - snprintf(psx, sizeof(psx), "_PS%d", dstate); - method = aml_find_from_namespace(name, psx); - if (method == NULL) { - return; - } - - bzero(&env, sizeof(env)); - aml_local_stack_push(aml_local_stack_create()); - aml_eval_name(&env, method); - aml_local_stack_delete(aml_local_stack_pop()); -} - -/* - * 7.2.1: For the OS to have the defined wake capability properly enabled - * for the device. - */ -void -acpi_set_device_wakecap(acpi_softc_t *sc, struct aml_name *name, u_int8_t cap) -{ - struct acpi_powerres_info *powerres; - struct acpi_powerres_device_ref *device_ref; - struct acpi_powerres_device *device; - struct aml_name *method; - union aml_object argv[1]; - - if (cap != ACPI_D_WAKECAP_ENABLE && cap != ACPI_D_WAKECAP_DISABLE ) { - return; - } - - device = acpi_powerres_get_powerres_device(sc, name); - if (device == NULL) { - return; - } - device->wake_cap = cap; - - /* - * Disable wake capability. We don't need to check PowerResource, - * just execute _PSW control method of the device. - */ - if (cap == ACPI_D_WAKECAP_DISABLE ) { - goto method_execution; - } - - /* - * Enable wake capability. - * All Power Resources referenced by elements 2 through N - * are put into the ON state. - * - */ - LIST_FOREACH(powerres, &sc->acpi_powerres_inflist, links) { - LIST_FOREACH(device_ref, &powerres->prwlist, links) { - if (device_ref->device->name != name) { - continue; - } - if (powerres->state != ACPI_POWER_RESOURCE_ON) { - acpi_set_powerres_state(sc, powerres->name, - ACPI_POWER_RESOURCE_ON); - } - break; /* already found, goto next PowerResource */ - } - } - -method_execution: - /* - * If present, the _PSW control method is executed to set the - * device-specific registers to enable the wake functionality - * of the device. - */ - method = aml_find_from_namespace(name, "_PSW"); - if (method == NULL) { - return; - } - - argv[0].type = aml_t_num; - argv[0].num.number = cap; - aml_invoke_method(method, 1, argv); /* no result code */ -} - -/* - * 7.4.1 Returns the current ON or OFF status for the power resource. - */ -u_int8_t -acpi_get_current_powerres_state(struct aml_name *name) -{ - u_int8_t pstate; - struct aml_name *method; - union aml_object *ret; - struct aml_environ env; - - pstate = ACPI_POWER_RESOURCE_ON; - method = aml_find_from_namespace(name, "_STA"); - if (method == NULL) { - return (pstate); /* just in case */ - } - - bzero(&env, sizeof(env)); - aml_local_stack_push(aml_local_stack_create()); - ret = aml_eval_name(&env, method); - pstate = ret->num.number; /* OFF or ON */ - aml_local_stack_delete(aml_local_stack_pop()); - return (pstate); -} - -static __inline struct acpi_powerres_info * -acpi_powerres_get_powerres(acpi_softc_t *sc, struct aml_name *name) -{ - struct acpi_powerres_info *powerres; - - LIST_FOREACH(powerres, &sc->acpi_powerres_inflist, links) { - if (powerres->name == name) { - return (powerres); - } - } - - return (NULL); -} - -/* - * 7.4.2,3 Puts the power resource into the ON/OFF state. - */ -void -acpi_set_powerres_state(acpi_softc_t *sc, struct aml_name *name, - u_int8_t pstate) -{ - struct acpi_powerres_info *powerres; - struct aml_name *method; - struct aml_environ env; - - if (pstate != ACPI_POWER_RESOURCE_ON && - pstate != ACPI_POWER_RESOURCE_OFF) { - return; - } - - powerres = acpi_powerres_get_powerres(sc, name); - if (powerres == NULL) { - return; - } - powerres->state = pstate; - - method = aml_find_from_namespace(name, powerres_statestr[pstate]); - if (method == NULL) { - return; /* just in case */ - } - - bzero(&env, sizeof(env)); - aml_local_stack_push(aml_local_stack_create()); - aml_eval_name(&env, method); - aml_local_stack_delete(aml_local_stack_pop()); -} - -/* - * 7.1,2 Initialize the relationship of PowerResources and devices. - */ -void -acpi_powerres_init(acpi_softc_t *sc) -{ - struct acpi_powerres_info *powerres; - struct acpi_powerres_device_ref *device_ref; - struct acpi_powerres_device *device; - int i; - - while ((powerres = LIST_FIRST(&sc->acpi_powerres_inflist))) { - for (i = 0; i < ACPI_PR_MAX; i++) { - while ((device_ref = LIST_FIRST(&powerres->reflist[i]))) { - LIST_REMOVE(device_ref, links); - FREE(device_ref, M_TEMP); - } - LIST_INIT(&powerres->reflist[i]); - } - LIST_INIT(&powerres->prwlist); - LIST_REMOVE(powerres, links); - FREE(powerres, M_TEMP); - } - LIST_INIT(&sc->acpi_powerres_inflist); - - while ((device = LIST_FIRST(&sc->acpi_powerres_devlist))) { - LIST_REMOVE(device, links); - FREE(device, M_TEMP); - } - LIST_INIT(&sc->acpi_powerres_devlist); - - aml_apply_foreach_found_objects(NULL, ".", - acpi_powerres_register, sc); - aml_apply_foreach_found_objects(NULL, "_PR", - acpi_powerres_add_device, sc); -} - -static __inline void -acpi_powerres_device_prw_print(struct acpi_powerres_device *device) -{ - - printf("[PRW:%d:", device->wake_cap); - switch (device->prw_val[0]->type) { - case aml_t_num: - /* bit index in GPEx_EN of the enable bit */ - printf("0x%x", device->prw_val[0]->num.number); - break; - default: - /* XXX in ACPI 2.0, we can have additional GPE blocks */ - printf("GPE block"); - break; - } - /* the lowest sleeping state */ - printf(":%d] ", device->prw_val[1]->num.number); -} - -void -acpi_powerres_debug(acpi_softc_t *sc) -{ - struct acpi_powerres_info *powerres; - struct acpi_powerres_device_ref *device_ref; - struct acpi_powerres_device *device; - int i; - - LIST_FOREACH(powerres, &sc->acpi_powerres_inflist, links) { - printf("acpi_powerres_debug[powerres]:"); - aml_print_curname(powerres->name); - printf("[%d:%d:%s]\n", powerres->name->property->pres.level, - powerres->name->property->pres.order, - powerres_statestr[powerres->state]); - - /* for _PR[0-2] */ - for (i = 0; i < ACPI_PR_MAX; i++) { - if (LIST_EMPTY(&powerres->reflist[i])) { - continue; - } - printf("\t_PR%d:", i); - LIST_FOREACH(device_ref, &powerres->reflist[i], links) { - device = device_ref->device; - aml_print_curname(device->name); - printf("[D%d] ", device->state); - } - printf("\n"); - } - - /* for _PRW */ - if (LIST_EMPTY(&powerres->prwlist)) { - continue; - } - printf("\t_PRW:"); - LIST_FOREACH(device_ref, &powerres->prwlist, links) { - device = device_ref->device; - aml_print_curname(device->name); - acpi_powerres_device_prw_print(device); - } - printf("\n"); - } - - LIST_FOREACH(device, &sc->acpi_powerres_devlist, links) { - printf("acpi_powerres_debug[device]:"); - aml_print_curname(device->name); - if (device->state != ACPI_D_STATE_UNKNOWN) { - printf("[D%d] ", device->state); - } - if (device->wake_cap != ACPI_D_WAKECAP_UNKNOWN) { - acpi_powerres_device_prw_print(device); - } - printf("\n"); - } -} - -static int -acpi_powerres_register(struct aml_name *name, va_list ap) -{ - int i, order; - acpi_softc_t *sc; - struct acpi_powerres_info *powerres, *other_pr, *last_pr; - - sc = va_arg(ap, acpi_softc_t *); - - if (name->property == NULL || - name->property->type != aml_t_powerres) { - return (0); - } - - MALLOC(powerres, struct acpi_powerres_info *, - sizeof(*powerres), M_TEMP, M_NOWAIT); - if (powerres == NULL) { - return (1); - } - - powerres->name = name; - - /* get the current ON or OFF status for the power resource */ - powerres->state = acpi_get_current_powerres_state(name); - - /* must be sorted by resource order of PowerResource */ - order = powerres->name->property->pres.order; - other_pr = last_pr = NULL; - if (LIST_EMPTY(&sc->acpi_powerres_inflist)) { - LIST_INSERT_HEAD(&sc->acpi_powerres_inflist, powerres, links); - } else { - LIST_FOREACH(other_pr, &sc->acpi_powerres_inflist, links) { - if (other_pr->name->property->pres.order >= order) { - break; /* found */ - } - last_pr = other_pr; - } - if (other_pr != NULL) { - LIST_INSERT_BEFORE(other_pr, powerres, links); - } else { - LIST_INSERT_AFTER(last_pr, powerres, links); - } - } - - for (i = 0; i < ACPI_PR_MAX; i++) { - LIST_INIT(&powerres->reflist[i]); - } - LIST_INIT(&powerres->prwlist); - - return (0); -} - -static int -acpi_powerres_add_device(struct aml_name *name, va_list ap) -{ - int i, offset, objtype; - int prnum; - int dev_found; - acpi_softc_t *sc; - struct acpi_powerres_device *device; - struct acpi_powerres_device_ref *device_ref; - struct acpi_powerres_info *powerres; - struct aml_name *powerres_name; - struct aml_environ env; - union aml_object **objects; - - sc = va_arg(ap, acpi_softc_t *); - objtype = prnum = 0; - - /* should be _PR[0-2] or _PRW */ - switch (name->name[3]) { - case '0' ... '2': - objtype = ACPI_D_PM_TYPE_PRX; - prnum = name->name[3] - '0'; - offset = 0; - break; - case 'W': - objtype = ACPI_D_PM_TYPE_PRW; - /* for _PRW, PowerResource reference starts from elements 2 */ - offset = 2; - break; - default: - return (0); - } - - if (name->property == NULL || - name->property->type != aml_t_package) { - return (0); - } - - if (name->property->package.elements == 0) { - return (0); - } - - /* make the list of devices */ - dev_found = 0; - LIST_FOREACH(device, &sc->acpi_powerres_devlist, links) { - if (device->name == name->parent) { - dev_found = 1; - break; - } - } - if (!dev_found) { - MALLOC(device, struct acpi_powerres_device *, - sizeof(*device), M_TEMP, M_NOWAIT); - if (device == NULL) { - return (1); - } - - /* set default values */ - device->state = ACPI_D_STATE_UNKNOWN; - device->wake_cap = ACPI_D_WAKECAP_UNKNOWN; - - /* this is a _PR[0-2|W] object, we need the parent of this. */ - device->name = name->parent; - - - LIST_INSERT_HEAD(&sc->acpi_powerres_devlist, device, links); - } - - objects = name->property->package.objects; - - switch (objtype) { - case ACPI_D_PM_TYPE_PRX: - /* get the current device state. */ - if (device->state == ACPI_D_STATE_UNKNOWN) { - device->state = acpi_get_current_device_state(device->name); - } - break; - case ACPI_D_PM_TYPE_PRW: - device->wake_cap = ACPI_D_WAKECAP_DEFAULT; - for (i = 0; i < 2; i++) { - device->prw_val[i] = objects[i]; - } - break; - default: - break; - } - - /* find PowerResource which the device reference to */ - MALLOC(device_ref, struct acpi_powerres_device_ref *, - sizeof(*device_ref), M_TEMP, M_NOWAIT); - if (device_ref == NULL) { - return (1); - } - - device_ref->device = device; - env.curname = device->name; - for (i = offset; i < name->property->package.elements; i++) { - if (objects[i]->type != aml_t_namestr) { - printf("acpi_powerres_add_device: not name string\n"); - continue; - } - powerres_name = aml_search_name(&env, objects[i]->nstr.dp); - if (powerres_name == NULL) { - printf("acpi_powerres_add_device: not found\n"); - continue; - } - - LIST_FOREACH(powerres, &sc->acpi_powerres_inflist, links) { - if (powerres->name != powerres_name) { - continue; - } - - switch (objtype) { - case ACPI_D_PM_TYPE_PRX: - LIST_INSERT_HEAD(&powerres->reflist[prnum], - device_ref, links); - break; - case ACPI_D_PM_TYPE_PRW: - LIST_INSERT_HEAD(&powerres->prwlist, - device_ref, links); - break; - default: - break; - } - /* already found, go to next element... */ - break; - } - } - - switch (objtype) { - case ACPI_D_PM_TYPE_PRX: - /* XXX - * force to set the current device state to make - * PowerResource compatible with the device state. - */ - acpi_set_device_state(sc, device->name, device->state); - break; - case ACPI_D_PM_TYPE_PRW: - acpi_set_device_wakecap(sc, device->name, device->wake_cap); - break; - default: - break; - } - - return (0); -} - -static __inline void -acpi_set_device_prw_gpe(acpi_softc_t *sc, struct acpi_powerres_device *device, - boolean_t on_off) -{ - u_long ef; - - device->gpe_enabled = on_off; - - /* The proper general-purpose register bits are enabled. */ - switch (device->prw_val[0]->type) { - case aml_t_num: - /* bit index in GPEx_EN of the enable bit */ - ef = read_eflags(); /* XXX should MI */ - acpi_gpe_enable_bit(sc, device->prw_val[0]->num.number, on_off); - write_eflags(ef); - break; - default: - /* XXX in ACPI 2.0, we can have additional GPE blocks */ - printf("ACPI 2.0 style _PRW/GPE handling is not supported\n"); - break; - } -} - -static void -acpi_set_device_next_state(acpi_softc_t *sc, struct acpi_powerres_device *device, - u_int8_t sleeping_state, u_int8_t def_dstate) -{ - - /* set given default device state */ - device->next_state = def_dstate; - - if (device->wake_cap != ACPI_D_WAKECAP_ENABLE) { - goto out; - } - - /* - * 7.2.1 _PRW - * The sleeping state being enterted must be greater or equal to the - * power state declared in element 1 of the _PRW object. - */ - if (sleeping_state < device->prw_val[1]->num.number) { - goto out; - } - - device->next_state = ACPI_D_STATE_D0; /* XXX need to refer _SxD ? */ - - if (sleeping_state > ACPI_S_STATE_S0 && device->gpe_enabled == 0) { - acpi_set_device_prw_gpe(sc, device, 1); - } - -out: - return; -} - -/* - * 7.1-5 PowerResource manipulation on the sleeping state transision. - */ -void -acpi_powerres_set_sleeping_state(acpi_softc_t *sc, u_int8_t state) -{ - int i; - struct acpi_powerres_info *powerres; - struct acpi_powerres_device *device; - struct acpi_powerres_device_ref *device_ref; - - if (state > ACPI_S_STATE_S4) { - return; - } - - /* - * initialize the next device state to D0, then change to D3 later - * based on PowerResource state change. - */ - LIST_FOREACH(device, &sc->acpi_powerres_devlist, links) { - acpi_set_device_next_state(sc, device, state, ACPI_D_STATE_D0); - } - - /* - * 7.5.2 System \_Sx state - * Power Resources are in a state compatible with the system Sx - * state. All power Resources that supply a System Level reference - * of Sn (where n < x) are in the OFF state. - */ - LIST_FOREACH(powerres, &sc->acpi_powerres_inflist, links) { - if (powerres->name->property->pres.level < state) { - /* if ON state then put it in the OFF state */ - if (powerres->state == ACPI_POWER_RESOURCE_ON) { - acpi_set_powerres_state(sc, powerres->name, - ACPI_POWER_RESOURCE_OFF); - } - /* - * Device states are compatible with the current - * Power Resource states. - */ - for (i = 0; i < ACPI_PR_MAX; i++) { - LIST_FOREACH(device_ref, &powerres->reflist[i], links) { - device = device_ref->device; - acpi_set_device_next_state(sc, device, - state, ACPI_D_STATE_D3); - } - } - } else { - /* if OFF state then put it in the ON state */ - if (powerres->state == ACPI_POWER_RESOURCE_OFF) { - acpi_set_powerres_state(sc, powerres->name, - ACPI_POWER_RESOURCE_ON); - } - } - } - - /* - * Devices states are compatible with the current Power Resource - * states. only devices which solely reference Power Resources which - * are in the ON state for a given device state can be in that device - * state. In all other cases, the device is in the D3 (off) state. - * Note: - * Or is at least assumed to be in the D3 state by its device driver. - * For example, if the device doesn't explicitly describe how it can - * stay in some state non-off state while the system is in a sleeping - * state, the operating software must assume that the device can lose - * its power and state. - */ - - LIST_FOREACH(device, &sc->acpi_powerres_devlist, links) { - if (device->next_state == ACPI_D_STATE_D3 && - device->state != ACPI_D_STATE_D3) { - acpi_set_device_state(sc, device->name, ACPI_D_STATE_D3); - } - if (device->next_state == ACPI_D_STATE_D0 && - device->state != ACPI_D_STATE_D0) { - acpi_set_device_state(sc, device->name, ACPI_D_STATE_D0); - } - - /* XXX reset GEPx_EN enabled bit on S0 state */ - if (state == ACPI_S_STATE_S0 && device->gpe_enabled && - device->wake_cap == ACPI_D_WAKECAP_ENABLE) { - acpi_set_device_prw_gpe(sc, device, 0); - } - } -} |