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acpi.c (236408) acpi.c (239340)
1/*-
2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
4 * Copyright (c) 2000, 2001 Michael Smith
5 * Copyright (c) 2000 BSDi
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without

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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
30#include <sys/cdefs.h>
1/*-
2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
4 * Copyright (c) 2000, 2001 Michael Smith
5 * Copyright (c) 2000 BSDi
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without

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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
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: head/sys/dev/acpica/acpi.c 236408 2012-06-01 17:00:33Z jkim $");
31__FBSDID("$FreeBSD: head/sys/dev/acpica/acpi.c 239340 2012-08-16 20:54:52Z jkim $");
32
33#include "opt_acpi.h"
34#include <sys/param.h>
35#include <sys/kernel.h>
36#include <sys/proc.h>
37#include <sys/fcntl.h>
38#include <sys/malloc.h>
39#include <sys/module.h>

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92};
93
94/* Global mutex for locking access to the ACPI subsystem. */
95struct mtx acpi_mutex;
96
97/* Bitmap of device quirks. */
98int acpi_quirks;
99
32
33#include "opt_acpi.h"
34#include <sys/param.h>
35#include <sys/kernel.h>
36#include <sys/proc.h>
37#include <sys/fcntl.h>
38#include <sys/malloc.h>
39#include <sys/module.h>

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92};
93
94/* Global mutex for locking access to the ACPI subsystem. */
95struct mtx acpi_mutex;
96
97/* Bitmap of device quirks. */
98int acpi_quirks;
99
100/* Optional ACPI methods for suspend and resume, e.g., _GTS and _BFS. */
101int acpi_sleep_flags;
102
103/* Supported sleep states. */
104static BOOLEAN acpi_sleep_states[ACPI_S_STATE_COUNT];
105
106static int acpi_modevent(struct module *mod, int event, void *junk);
107static int acpi_probe(device_t dev);
108static int acpi_attach(device_t dev);
109static int acpi_suspend(device_t dev);
110static int acpi_resume(device_t dev);

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287TUNABLE_INT("debug.acpi.reset_clock", &acpi_reset_clock);
288SYSCTL_INT(_debug_acpi, OID_AUTO, reset_clock, CTLFLAG_RW,
289 &acpi_reset_clock, 1, "Reset system clock while resuming.");
290#endif
291
292/* Allow users to override quirks. */
293TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
294
100/* Supported sleep states. */
101static BOOLEAN acpi_sleep_states[ACPI_S_STATE_COUNT];
102
103static int acpi_modevent(struct module *mod, int event, void *junk);
104static int acpi_probe(device_t dev);
105static int acpi_attach(device_t dev);
106static int acpi_suspend(device_t dev);
107static int acpi_resume(device_t dev);

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284TUNABLE_INT("debug.acpi.reset_clock", &acpi_reset_clock);
285SYSCTL_INT(_debug_acpi, OID_AUTO, reset_clock, CTLFLAG_RW,
286 &acpi_reset_clock, 1, "Reset system clock while resuming.");
287#endif
288
289/* Allow users to override quirks. */
290TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
291
295/* Execute optional ACPI methods for suspend and resume. */
296TUNABLE_INT("debug.acpi.sleep_flags", &acpi_sleep_flags);
297SYSCTL_INT(_debug_acpi, OID_AUTO, sleep_flags, CTLFLAG_RW | CTLFLAG_TUN,
298 &acpi_sleep_flags, 0, "Execute optional ACPI methods for suspend/resume.");
299
300static int acpi_susp_bounce;
301SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
302 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
303
304/*
305 * ACPI can only be loaded as a module by the loader; activating it after
306 * system bootstrap time is not useful, and can be fatal to the system.
307 * It also cannot be unloaded, since the entire system bus hierarchy hangs

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1980 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1981 if (ACPI_FAILURE(status)) {
1982 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
1983 AcpiFormatException(status));
1984 return;
1985 }
1986 device_printf(sc->acpi_dev, "Powering system off\n");
1987 intr = intr_disable();
292static int acpi_susp_bounce;
293SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
294 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
295
296/*
297 * ACPI can only be loaded as a module by the loader; activating it after
298 * system bootstrap time is not useful, and can be fatal to the system.
299 * It also cannot be unloaded, since the entire system bus hierarchy hangs

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1972 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1973 if (ACPI_FAILURE(status)) {
1974 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
1975 AcpiFormatException(status));
1976 return;
1977 }
1978 device_printf(sc->acpi_dev, "Powering system off\n");
1979 intr = intr_disable();
1988 status = AcpiEnterSleepState(ACPI_STATE_S5, acpi_sleep_flags);
1980 status = AcpiEnterSleepState(ACPI_STATE_S5);
1989 if (ACPI_FAILURE(status)) {
1990 intr_restore(intr);
1991 device_printf(sc->acpi_dev, "power-off failed - %s\n",
1992 AcpiFormatException(status));
1993 } else {
1994 DELAY(1000000);
1995 intr_restore(intr);
1996 device_printf(sc->acpi_dev, "power-off failed - timeout\n");

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2745
2746 if (sc->acpi_sleep_delay > 0)
2747 DELAY(sc->acpi_sleep_delay * 1000000);
2748
2749 intr = intr_disable();
2750 if (state != ACPI_STATE_S1) {
2751 sleep_result = acpi_sleep_machdep(sc, state);
2752 acpi_wakeup_machdep(sc, state, sleep_result, 0);
1981 if (ACPI_FAILURE(status)) {
1982 intr_restore(intr);
1983 device_printf(sc->acpi_dev, "power-off failed - %s\n",
1984 AcpiFormatException(status));
1985 } else {
1986 DELAY(1000000);
1987 intr_restore(intr);
1988 device_printf(sc->acpi_dev, "power-off failed - timeout\n");

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2737
2738 if (sc->acpi_sleep_delay > 0)
2739 DELAY(sc->acpi_sleep_delay * 1000000);
2740
2741 intr = intr_disable();
2742 if (state != ACPI_STATE_S1) {
2743 sleep_result = acpi_sleep_machdep(sc, state);
2744 acpi_wakeup_machdep(sc, state, sleep_result, 0);
2753 AcpiLeaveSleepStatePrep(state, acpi_sleep_flags);
2745 AcpiLeaveSleepStatePrep(state);
2754 intr_restore(intr);
2755
2756 /* call acpi_wakeup_machdep() again with interrupt enabled */
2757 acpi_wakeup_machdep(sc, state, sleep_result, 1);
2758
2759 if (sleep_result == -1)
2760 goto backout;
2761
2762 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2763 if (state == ACPI_STATE_S4)
2764 AcpiEnable();
2765 } else {
2746 intr_restore(intr);
2747
2748 /* call acpi_wakeup_machdep() again with interrupt enabled */
2749 acpi_wakeup_machdep(sc, state, sleep_result, 1);
2750
2751 if (sleep_result == -1)
2752 goto backout;
2753
2754 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2755 if (state == ACPI_STATE_S4)
2756 AcpiEnable();
2757 } else {
2766 status = AcpiEnterSleepState(state, acpi_sleep_flags);
2767 AcpiLeaveSleepStatePrep(state, acpi_sleep_flags);
2758 status = AcpiEnterSleepState(state);
2759 AcpiLeaveSleepStatePrep(state);
2768 intr_restore(intr);
2769 if (ACPI_FAILURE(status)) {
2770 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2771 AcpiFormatException(status));
2772 goto backout;
2773 }
2774 }
2775 slp_state = ACPI_SS_SLEPT;

--- 1128 unchanged lines hidden --- 		2760 intr_restore(intr);
2761 if (ACPI_FAILURE(status)) {
2762 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2763 AcpiFormatException(status));
2764 goto backout;
2765 }
2766 }
2767 slp_state = ACPI_SS_SLEPT;

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