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Add acpi_send_pm_event() to inform all devices that the system is

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going to sleep and back from sleep.
Also re-enabling some acpi registers on wakeup.
This commit is contained in:
Mitsuru IWASAKI 2000-09-14 23:29:37 +00:00
parent 42fd51cedc
commit 32d817d227
2 changed files with 63 additions and 3 deletions
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60
sys/dev/acpi/acpi.c
View File

@ -36,6 +36,9 @@
#include <sys/conf.h>
#include <sys/sysctl.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <sys/eventhandler.h> /* for EVENTHANDLER_REGISTER */
#include <sys/reboot.h> /* for RB_POWEROFF */
#include <machine/clock.h> /* for DELAY */
@ -153,6 +156,7 @@ static void acpi_enable_events(acpi_softc_t *sc);
/* New-bus dependent code */
static acpi_softc_t *acpi_get_softc(dev_t dev);
static int acpi_send_pm_event(acpi_softc_t *sc, u_int8_t state);
static void acpi_identify(driver_t *driver, device_t parent);
static int acpi_probe(device_t dev);
static int acpi_attach(device_t dev);
@ -374,6 +378,7 @@ acpi_enable_disable(acpi_softc_t *sc, boolean_t enable)
}
bus_space_write_1(bst, bsh, 0, val);
sc->enabled = enable;
ACPI_DEBUGPRINT("acpi_enable_disable(%d) = (%x)\n", enable, val);
}
@ -680,6 +685,7 @@ acpi_handle_dsdt(acpi_softc_t *sc)
}
/* get sleeping type values from ACPI namespace */
sc->system_state = ACPI_S_STATE_S0;
sc->system_state_initialized = 1;
for (i = ACPI_S_STATE_S0; i <= ACPI_S_STATE_S5; i++) {
ssp.mode[i].slp_typ_a = ACPI_UNSUPPORTSLPTYP;
@ -904,6 +910,13 @@ acpi_set_sleeping_state(acpi_softc_t *sc, u_int8_t state)
}
if (state < ACPI_S_STATE_S5) {
/* inform all devices that we are going to sleep. */
if (acpi_send_pm_event(sc, state) != 0) {
/* if failure, 'wakeup' the system again */
acpi_send_pm_event(sc, ACPI_S_STATE_S0);
return;
}
/* Prepare to sleep */
acpi_execute_pts(sc, state);
@ -912,6 +925,8 @@ acpi_set_sleeping_state(acpi_softc_t *sc, u_int8_t state)
if (acpi_debug) {
acpi_powerres_debug(sc);
}
sc->system_state = state;
}
/*
@ -931,11 +946,14 @@ acpi_set_sleeping_state(acpi_softc_t *sc, u_int8_t state)
}
if (state < ACPI_S_STATE_S5) {
acpi_execute_wak(sc, state);
acpi_powerres_set_sleeping_state(sc, 0);
if (acpi_debug) {
acpi_powerres_debug(sc);
}
acpi_execute_wak(sc, state);
acpi_send_pm_event(sc, ACPI_S_STATE_S0);
sc->system_state = ACPI_S_STATE_S0;
}
}
@ -1233,6 +1251,31 @@ acpi_get_softc(dev_t dev)
return (devclass_get_softc(acpi_devclass, minor(dev)));
}
static int
acpi_send_pm_event(acpi_softc_t *sc, u_int8_t state)
{
int error;
error = 0;
switch (state) {
case ACPI_S_STATE_S0:
if (sc->system_state != ACPI_S_STATE_S0) {
DEVICE_RESUME(root_bus);
}
break;
case ACPI_S_STATE_S1:
case ACPI_S_STATE_S2:
case ACPI_S_STATE_S3:
case ACPI_S_STATE_S4:
error = DEVICE_SUSPEND(root_bus);
break;
default:
break;
}
return (error);
}
static void
acpi_identify(driver_t *driver, device_t parent)
{
@ -1342,11 +1385,26 @@ acpi_attach(device_t dev)
return (0);
}
static int
acpi_resume(device_t dev)
{
acpi_softc_t *sc;
sc = device_get_softc(dev);
if (sc->enabled) {
/* re-enable on wakeup */
acpi_enable_disable(sc, 1);
acpi_enable_events(sc);
}
return (0);
}
static device_method_t acpi_methods[] = {
/* Device interface */
DEVMETHOD(device_identify, acpi_identify),
DEVMETHOD(device_probe, acpi_probe),
DEVMETHOD(device_attach, acpi_attach),
DEVMETHOD(device_resume, acpi_resume),
{0, 0}
};

6
sys/dev/acpi/acpi.h
View File

@ -53,7 +53,7 @@ struct acpi_powerres_info {
#define ACPI_POWER_RESOURCE_ON 1
#define ACPI_POWER_RESOURCE_OFF 0
u_int8_t state; /* OFF or ON */
#define ACPI_PR_MAX 3
#define ACPI_PR_MAX 3 /* _PR[0-2] */
LIST_HEAD(, acpi_powerres_device_ref) reflist[ACPI_PR_MAX];
};
@ -64,8 +64,10 @@ typedef struct acpi_softc {
struct FACPbody *facp_body;
struct ACPIsdt *dsdt;
struct FACS *facs;
int system_state;
int system_state_initialized;
int broken_wakeuplogic;
int enabled;
struct acpi_system_state_package system_state_package;
LIST_HEAD(, acpi_powerres_info) acpi_powerres_inflist;
LIST_HEAD(, acpi_powerres_device) acpi_powerres_devlist;
@ -84,4 +86,4 @@ void acpi_set_powerres_state(acpi_softc_t *, struct aml_name *,
u_int8_t);
void acpi_powerres_set_sleeping_state(acpi_softc_t *, u_int8_t);
#endif /* _DEV_ACPI_ACPI_H_ */
#endif /* !_DEV_ACPI_ACPI_H_ */