xref: /freebsd/sys/dev/acpica/acpi.c (revision 9cf5a6aad84a57d6eff109b08ebfb5721cedbbfe)
115e32d5dSMike Smith /*-
215e32d5dSMike Smith  * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
315e32d5dSMike Smith  * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
4cb9b0d80SMike Smith  * Copyright (c) 2000, 2001 Michael Smith
515e32d5dSMike Smith  * Copyright (c) 2000 BSDi
615e32d5dSMike Smith  * All rights reserved.
715e32d5dSMike Smith  *
815e32d5dSMike Smith  * Redistribution and use in source and binary forms, with or without
915e32d5dSMike Smith  * modification, are permitted provided that the following conditions
1015e32d5dSMike Smith  * are met:
1115e32d5dSMike Smith  * 1. Redistributions of source code must retain the above copyright
1215e32d5dSMike Smith  *    notice, this list of conditions and the following disclaimer.
1315e32d5dSMike Smith  * 2. Redistributions in binary form must reproduce the above copyright
1415e32d5dSMike Smith  *    notice, this list of conditions and the following disclaimer in the
1515e32d5dSMike Smith  *    documentation and/or other materials provided with the distribution.
1615e32d5dSMike Smith  *
1715e32d5dSMike Smith  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
1815e32d5dSMike Smith  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1915e32d5dSMike Smith  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
2015e32d5dSMike Smith  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
2115e32d5dSMike Smith  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
2215e32d5dSMike Smith  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2315e32d5dSMike Smith  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2415e32d5dSMike Smith  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
2515e32d5dSMike Smith  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
2615e32d5dSMike Smith  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
2715e32d5dSMike Smith  * SUCH DAMAGE.
2815e32d5dSMike Smith  */
2915e32d5dSMike Smith 
30dad97feeSDavid E. O'Brien #include <sys/cdefs.h>
31dad97feeSDavid E. O'Brien __FBSDID("$FreeBSD$");
32dad97feeSDavid E. O'Brien 
3315e32d5dSMike Smith #include "opt_acpi.h"
3415e32d5dSMike Smith #include <sys/param.h>
3515e32d5dSMike Smith #include <sys/kernel.h>
36fb919e4dSMark Murray #include <sys/proc.h>
37a89fcf28STakanori Watanabe #include <sys/fcntl.h>
3815e32d5dSMike Smith #include <sys/malloc.h>
39fe12f24bSPoul-Henning Kamp #include <sys/module.h>
4015e32d5dSMike Smith #include <sys/bus.h>
4115e32d5dSMike Smith #include <sys/conf.h>
4215e32d5dSMike Smith #include <sys/ioccom.h>
4315e32d5dSMike Smith #include <sys/reboot.h>
4415e32d5dSMike Smith #include <sys/sysctl.h>
4515e32d5dSMike Smith #include <sys/ctype.h>
461611ea87SMitsuru IWASAKI #include <sys/linker.h>
47f9390180SMitsuru IWASAKI #include <sys/power.h>
4854f6bca0SNate Lawson #include <sys/sbuf.h>
49c66d2b38SJung-uk Kim #include <sys/sched.h>
50eeb3a05fSNate Lawson #include <sys/smp.h>
51c66d2b38SJung-uk Kim #include <sys/timetc.h>
5215e32d5dSMike Smith 
53d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
54d320e05cSJohn Baldwin #include <machine/pci_cfgreg.h>
55d320e05cSJohn Baldwin #endif
5615e32d5dSMike Smith #include <machine/resource.h>
57dc750869SNate Lawson #include <machine/bus.h>
58dc750869SNate Lawson #include <sys/rman.h>
59bc0f2195SMike Smith #include <isa/isavar.h>
60c796e27bSNate Lawson #include <isa/pnpvar.h>
61bc0f2195SMike Smith 
62129d3046SJung-uk Kim #include <contrib/dev/acpica/include/acpi.h>
63129d3046SJung-uk Kim #include <contrib/dev/acpica/include/accommon.h>
64129d3046SJung-uk Kim #include <contrib/dev/acpica/include/acnamesp.h>
65129d3046SJung-uk Kim 
6615e32d5dSMike Smith #include <dev/acpica/acpivar.h>
6715e32d5dSMike Smith #include <dev/acpica/acpiio.h>
6815e32d5dSMike Smith 
692be4e471SJung-uk Kim #include <vm/vm_param.h>
702be4e471SJung-uk Kim 
71d745c852SEd Schouten static MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
7215e32d5dSMike Smith 
73be2b1797SNate Lawson /* Hooks for the ACPI CA debugging infrastructure */
74cb9b0d80SMike Smith #define _COMPONENT	ACPI_BUS
75b53f2771SMike Smith ACPI_MODULE_NAME("ACPI")
760ae55423SMike Smith 
7715e32d5dSMike Smith static d_open_t		acpiopen;
7815e32d5dSMike Smith static d_close_t	acpiclose;
7915e32d5dSMike Smith static d_ioctl_t	acpiioctl;
8015e32d5dSMike Smith 
8115e32d5dSMike Smith static struct cdevsw acpi_cdevsw = {
82dc08ffecSPoul-Henning Kamp 	.d_version =	D_VERSION,
837ac40f5fSPoul-Henning Kamp 	.d_open =	acpiopen,
847ac40f5fSPoul-Henning Kamp 	.d_close =	acpiclose,
857ac40f5fSPoul-Henning Kamp 	.d_ioctl =	acpiioctl,
867ac40f5fSPoul-Henning Kamp 	.d_name =	"acpi",
8715e32d5dSMike Smith };
8815e32d5dSMike Smith 
89ae19af49SJung-uk Kim struct acpi_interface {
90ae19af49SJung-uk Kim 	ACPI_STRING	*data;
91ae19af49SJung-uk Kim 	int		num;
92ae19af49SJung-uk Kim };
93ae19af49SJung-uk Kim 
94346eda4fSNate Lawson /* Global mutex for locking access to the ACPI subsystem. */
95cb9b0d80SMike Smith struct mtx	acpi_mutex;
96cb9b0d80SMike Smith 
9789fb5af8SNate Lawson /* Bitmap of device quirks. */
9889fb5af8SNate Lawson int		acpi_quirks;
9989fb5af8SNate Lawson 
100a0e73a12SJung-uk Kim /* Supported sleep states. */
101a0e73a12SJung-uk Kim static BOOLEAN	acpi_sleep_states[ACPI_S_STATE_COUNT];
102a0e73a12SJung-uk Kim 
1036d63101aSMike Smith static int	acpi_modevent(struct module *mod, int event, void *junk);
10415e32d5dSMike Smith static int	acpi_probe(device_t dev);
10515e32d5dSMike Smith static int	acpi_attach(device_t dev);
10610ce62b9SNate Lawson static int	acpi_suspend(device_t dev);
10710ce62b9SNate Lawson static int	acpi_resume(device_t dev);
108169b539aSNate Lawson static int	acpi_shutdown(device_t dev);
1093d844eddSAndriy Gapon static device_t	acpi_add_child(device_t bus, u_int order, const char *name,
110be2b1797SNate Lawson 			int unit);
11115e32d5dSMike Smith static int	acpi_print_child(device_t bus, device_t child);
11210ce62b9SNate Lawson static void	acpi_probe_nomatch(device_t bus, device_t child);
11310ce62b9SNate Lawson static void	acpi_driver_added(device_t dev, driver_t *driver);
114be2b1797SNate Lawson static int	acpi_read_ivar(device_t dev, device_t child, int index,
115be2b1797SNate Lawson 			uintptr_t *result);
116be2b1797SNate Lawson static int	acpi_write_ivar(device_t dev, device_t child, int index,
117be2b1797SNate Lawson 			uintptr_t value);
11891233413SNate Lawson static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
119ea233199SJohn Baldwin static void	acpi_reserve_resources(device_t dev);
120adad4744SNate Lawson static int	acpi_sysres_alloc(device_t dev);
121ea233199SJohn Baldwin static int	acpi_set_resource(device_t dev, device_t child, int type,
122ea233199SJohn Baldwin 			int rid, u_long start, u_long count);
123be2b1797SNate Lawson static struct resource *acpi_alloc_resource(device_t bus, device_t child,
124be2b1797SNate Lawson 			int type, int *rid, u_long start, u_long end,
125be2b1797SNate Lawson 			u_long count, u_int flags);
126049dc0d1SJohn Baldwin static int	acpi_adjust_resource(device_t bus, device_t child, int type,
127049dc0d1SJohn Baldwin 			struct resource *r, u_long start, u_long end);
128be2b1797SNate Lawson static int	acpi_release_resource(device_t bus, device_t child, int type,
129be2b1797SNate Lawson 			int rid, struct resource *r);
1308b28b622SNate Lawson static void	acpi_delete_resource(device_t bus, device_t child, int type,
1318b28b622SNate Lawson 		    int rid);
1321e4925e8SNate Lawson static uint32_t	acpi_isa_get_logicalid(device_t dev);
1331e4925e8SNate Lawson static int	acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
134ce619b2eSNate Lawson static char	*acpi_device_id_probe(device_t bus, device_t dev, char **ids);
135ce619b2eSNate Lawson static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
136ce619b2eSNate Lawson 		    ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
137ce619b2eSNate Lawson 		    ACPI_BUFFER *ret);
138df8d2a32SNate Lawson static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
139df8d2a32SNate Lawson 		    void *context, void **retval);
140df8d2a32SNate Lawson static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
141df8d2a32SNate Lawson 		    int max_depth, acpi_scan_cb_t user_fn, void *arg);
142a7a3177fSJung-uk Kim static int	acpi_set_powerstate(device_t child, int state);
143be2b1797SNate Lawson static int	acpi_isa_pnp_probe(device_t bus, device_t child,
144be2b1797SNate Lawson 		    struct isa_pnp_id *ids);
14515e32d5dSMike Smith static void	acpi_probe_children(device_t bus);
146d227204dSJohn Baldwin static void	acpi_probe_order(ACPI_HANDLE handle, int *order);
147be2b1797SNate Lawson static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
148be2b1797SNate Lawson 		    void *context, void **status);
149a0e73a12SJung-uk Kim static void	acpi_sleep_enable(void *arg);
150a0e73a12SJung-uk Kim static ACPI_STATUS acpi_sleep_disable(struct acpi_softc *sc);
15100a30448SNate Lawson static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
15215e32d5dSMike Smith static void	acpi_shutdown_final(void *arg, int howto);
15313d4f7baSMitsuru IWASAKI static void	acpi_enable_fixed_events(struct acpi_softc *sc);
154183c8af3SJohn Baldwin static BOOLEAN	acpi_has_hid(ACPI_HANDLE handle);
155a0a15716SJung-uk Kim static void	acpi_resync_clock(struct acpi_softc *sc);
156d4b9ff91SNate Lawson static int	acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
157d4b9ff91SNate Lawson static int	acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
158d4b9ff91SNate Lawson static int	acpi_wake_prep_walk(int sstate);
15988a79fc0SNate Lawson static int	acpi_wake_sysctl_walk(device_t dev);
16088a79fc0SNate Lawson static int	acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
16115e32d5dSMike Smith static void	acpi_system_eventhandler_sleep(void *arg, int state);
16215e32d5dSMike Smith static void	acpi_system_eventhandler_wakeup(void *arg, int state);
163a0e73a12SJung-uk Kim static int	acpi_sname2sstate(const char *sname);
164a0e73a12SJung-uk Kim static const char *acpi_sstate2sname(int sstate);
165d75de536SMitsuru IWASAKI static int	acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
1661d073b1dSJohn Baldwin static int	acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
1672a18c71dSJung-uk Kim static int	acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS);
168f9390180SMitsuru IWASAKI static int	acpi_pm_func(u_long cmd, void *arg, ...);
169879d6c23STakanori Watanabe static int	acpi_child_location_str_method(device_t acdev, device_t child,
170879d6c23STakanori Watanabe 					       char *buf, size_t buflen);
171879d6c23STakanori Watanabe static int	acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
172879d6c23STakanori Watanabe 					      char *buf, size_t buflen);
173d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
174d320e05cSJohn Baldwin static void	acpi_enable_pcie(void);
175d320e05cSJohn Baldwin #endif
1760d484d24SJohn Baldwin static void	acpi_hint_device_unit(device_t acdev, device_t child,
1770d484d24SJohn Baldwin 		    const char *name, int *unitp);
178ae19af49SJung-uk Kim static void	acpi_reset_interfaces(device_t dev);
179879d6c23STakanori Watanabe 
18015e32d5dSMike Smith static device_method_t acpi_methods[] = {
18115e32d5dSMike Smith     /* Device interface */
18215e32d5dSMike Smith     DEVMETHOD(device_probe,		acpi_probe),
18315e32d5dSMike Smith     DEVMETHOD(device_attach,		acpi_attach),
184169b539aSNate Lawson     DEVMETHOD(device_shutdown,		acpi_shutdown),
18556a70eadSNate Lawson     DEVMETHOD(device_detach,		bus_generic_detach),
18610ce62b9SNate Lawson     DEVMETHOD(device_suspend,		acpi_suspend),
18710ce62b9SNate Lawson     DEVMETHOD(device_resume,		acpi_resume),
18815e32d5dSMike Smith 
18915e32d5dSMike Smith     /* Bus interface */
19015e32d5dSMike Smith     DEVMETHOD(bus_add_child,		acpi_add_child),
19115e32d5dSMike Smith     DEVMETHOD(bus_print_child,		acpi_print_child),
19210ce62b9SNate Lawson     DEVMETHOD(bus_probe_nomatch,	acpi_probe_nomatch),
19310ce62b9SNate Lawson     DEVMETHOD(bus_driver_added,		acpi_driver_added),
19415e32d5dSMike Smith     DEVMETHOD(bus_read_ivar,		acpi_read_ivar),
19515e32d5dSMike Smith     DEVMETHOD(bus_write_ivar,		acpi_write_ivar),
19691233413SNate Lawson     DEVMETHOD(bus_get_resource_list,	acpi_get_rlist),
197ea233199SJohn Baldwin     DEVMETHOD(bus_set_resource,		acpi_set_resource),
19891233413SNate Lawson     DEVMETHOD(bus_get_resource,		bus_generic_rl_get_resource),
19915e32d5dSMike Smith     DEVMETHOD(bus_alloc_resource,	acpi_alloc_resource),
200049dc0d1SJohn Baldwin     DEVMETHOD(bus_adjust_resource,	acpi_adjust_resource),
20115e32d5dSMike Smith     DEVMETHOD(bus_release_resource,	acpi_release_resource),
2028b28b622SNate Lawson     DEVMETHOD(bus_delete_resource,	acpi_delete_resource),
203879d6c23STakanori Watanabe     DEVMETHOD(bus_child_pnpinfo_str,	acpi_child_pnpinfo_str_method),
204879d6c23STakanori Watanabe     DEVMETHOD(bus_child_location_str,	acpi_child_location_str_method),
20515e32d5dSMike Smith     DEVMETHOD(bus_activate_resource,	bus_generic_activate_resource),
20615e32d5dSMike Smith     DEVMETHOD(bus_deactivate_resource,	bus_generic_deactivate_resource),
20715e32d5dSMike Smith     DEVMETHOD(bus_setup_intr,		bus_generic_setup_intr),
20815e32d5dSMike Smith     DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),
2090d484d24SJohn Baldwin     DEVMETHOD(bus_hint_device_unit,	acpi_hint_device_unit),
21015e32d5dSMike Smith 
211ce619b2eSNate Lawson     /* ACPI bus */
212ce619b2eSNate Lawson     DEVMETHOD(acpi_id_probe,		acpi_device_id_probe),
213ce619b2eSNate Lawson     DEVMETHOD(acpi_evaluate_object,	acpi_device_eval_obj),
21410ce62b9SNate Lawson     DEVMETHOD(acpi_pwr_for_sleep,	acpi_device_pwr_for_sleep),
215df8d2a32SNate Lawson     DEVMETHOD(acpi_scan_children,	acpi_device_scan_children),
216ce619b2eSNate Lawson 
217bc0f2195SMike Smith     /* ISA emulation */
218bc0f2195SMike Smith     DEVMETHOD(isa_pnp_probe,		acpi_isa_pnp_probe),
219bc0f2195SMike Smith 
22061bfd867SSofian Brabez     DEVMETHOD_END
22115e32d5dSMike Smith };
22215e32d5dSMike Smith 
22315e32d5dSMike Smith static driver_t acpi_driver = {
22415e32d5dSMike Smith     "acpi",
22515e32d5dSMike Smith     acpi_methods,
22615e32d5dSMike Smith     sizeof(struct acpi_softc),
22715e32d5dSMike Smith };
22815e32d5dSMike Smith 
2293273b005SMike Smith static devclass_t acpi_devclass;
2306d63101aSMike Smith DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
231a4ecd543SNate Lawson MODULE_VERSION(acpi, 1);
23215e32d5dSMike Smith 
23315e2f34fSNate Lawson ACPI_SERIAL_DECL(acpi, "ACPI root bus");
23415e2f34fSNate Lawson 
235adad4744SNate Lawson /* Local pools for managing system resources for ACPI child devices. */
236adad4744SNate Lawson static struct rman acpi_rman_io, acpi_rman_mem;
237adad4744SNate Lawson 
238bee4aa4aSNate Lawson #define ACPI_MINIMUM_AWAKETIME	5
239bee4aa4aSNate Lawson 
2405217af30SJohn Baldwin /* Holds the description of the acpi0 device. */
2415217af30SJohn Baldwin static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
2425217af30SJohn Baldwin 
243197b4dccSNate Lawson SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
2441d7b121cSNate Lawson static char acpi_ca_version[12];
2451d7b121cSNate Lawson SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
2461d7b121cSNate Lawson 	      acpi_ca_version, 0, "Version of Intel ACPI-CA");
24715e32d5dSMike Smith 
24815e32d5dSMike Smith /*
249ae19af49SJung-uk Kim  * Allow overriding _OSI methods.
250ae19af49SJung-uk Kim  */
251ae19af49SJung-uk Kim static char acpi_install_interface[256];
252ae19af49SJung-uk Kim TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface,
253ae19af49SJung-uk Kim     sizeof(acpi_install_interface));
254ae19af49SJung-uk Kim static char acpi_remove_interface[256];
255ae19af49SJung-uk Kim TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface,
256ae19af49SJung-uk Kim     sizeof(acpi_remove_interface));
257ae19af49SJung-uk Kim 
258ae19af49SJung-uk Kim /*
259413081d7SNate Lawson  * Allow override of whether methods execute in parallel or not.
260c9b8d77dSNate Lawson  * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
261c9b8d77dSNate Lawson  * errors for AML that really can't handle parallel method execution.
262c9b8d77dSNate Lawson  * It is off by default since this breaks recursive methods and
263c9b8d77dSNate Lawson  * some IBMs use such code.
264413081d7SNate Lawson  */
265c9b8d77dSNate Lawson static int acpi_serialize_methods;
266413081d7SNate Lawson TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods);
267413081d7SNate Lawson 
2682a18c71dSJung-uk Kim /* Allow users to dump Debug objects without ACPI debugger. */
2692a18c71dSJung-uk Kim static int acpi_debug_objects;
2702a18c71dSJung-uk Kim TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects);
2712a18c71dSJung-uk Kim SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects,
2722a18c71dSJung-uk Kim     CTLFLAG_RW | CTLTYPE_INT, NULL, 0, acpi_debug_objects_sysctl, "I",
2732a18c71dSJung-uk Kim     "Enable Debug objects");
2742a18c71dSJung-uk Kim 
2752a18c71dSJung-uk Kim /* Allow the interpreter to ignore common mistakes in BIOS. */
2762a18c71dSJung-uk Kim static int acpi_interpreter_slack = 1;
2772a18c71dSJung-uk Kim TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack);
2782a18c71dSJung-uk Kim SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RDTUN,
2792a18c71dSJung-uk Kim     &acpi_interpreter_slack, 1, "Turn on interpreter slack mode.");
2802a18c71dSJung-uk Kim 
281ebbed20dSAndriy Gapon #ifdef __amd64__
2820755473bSJung-uk Kim /* Reset system clock while resuming.  XXX Remove once tested. */
2830755473bSJung-uk Kim static int acpi_reset_clock = 1;
2840755473bSJung-uk Kim TUNABLE_INT("debug.acpi.reset_clock", &acpi_reset_clock);
2850755473bSJung-uk Kim SYSCTL_INT(_debug_acpi, OID_AUTO, reset_clock, CTLFLAG_RW,
2860755473bSJung-uk Kim     &acpi_reset_clock, 1, "Reset system clock while resuming.");
287a0a15716SJung-uk Kim #endif
2880755473bSJung-uk Kim 
28939da3eb3SNate Lawson /* Allow users to override quirks. */
29039da3eb3SNate Lawson TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
29139da3eb3SNate Lawson 
29293bfd059SNate Lawson static int acpi_susp_bounce;
29393bfd059SNate Lawson SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
29493bfd059SNate Lawson     &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
29593bfd059SNate Lawson 
296c9b8d77dSNate Lawson /*
2976d63101aSMike Smith  * ACPI can only be loaded as a module by the loader; activating it after
2986d63101aSMike Smith  * system bootstrap time is not useful, and can be fatal to the system.
2998c0879b6SJohn Baldwin  * It also cannot be unloaded, since the entire system bus hierarchy hangs
300be2b1797SNate Lawson  * off it.
3016d63101aSMike Smith  */
3026d63101aSMike Smith static int
3036d63101aSMike Smith acpi_modevent(struct module *mod, int event, void *junk)
3046d63101aSMike Smith {
3056d63101aSMike Smith     switch (event) {
3066d63101aSMike Smith     case MOD_LOAD:
30787b45ed5SMitsuru IWASAKI 	if (!cold) {
30887b45ed5SMitsuru IWASAKI 	    printf("The ACPI driver cannot be loaded after boot.\n");
3096d63101aSMike Smith 	    return (EPERM);
31087b45ed5SMitsuru IWASAKI 	}
3116d63101aSMike Smith 	break;
3126d63101aSMike Smith     case MOD_UNLOAD:
313f9390180SMitsuru IWASAKI 	if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
3146d63101aSMike Smith 	    return (EBUSY);
315f9390180SMitsuru IWASAKI 	break;
3166d63101aSMike Smith     default:
3176d63101aSMike Smith 	break;
3186d63101aSMike Smith     }
3196d63101aSMike Smith     return (0);
3206d63101aSMike Smith }
3216d63101aSMike Smith 
3226d63101aSMike Smith /*
323bbc2815cSJohn Baldwin  * Perform early initialization.
32415e32d5dSMike Smith  */
325bbc2815cSJohn Baldwin ACPI_STATUS
326bbc2815cSJohn Baldwin acpi_Startup(void)
32715e32d5dSMike Smith {
32889fb5af8SNate Lawson     static int started = 0;
3292be4e471SJung-uk Kim     ACPI_STATUS status;
3302be4e471SJung-uk Kim     int val;
33115e32d5dSMike Smith 
3321b8c233dSPeter Pentchev     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3331b8c233dSPeter Pentchev 
334bee4aa4aSNate Lawson     /* Only run the startup code once.  The MADT driver also calls this. */
335bbc2815cSJohn Baldwin     if (started)
3362be4e471SJung-uk Kim 	return_VALUE (AE_OK);
337bbc2815cSJohn Baldwin     started = 1;
33815e32d5dSMike Smith 
339413081d7SNate Lawson     /*
3402be4e471SJung-uk Kim      * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
3412be4e471SJung-uk Kim      * if more tables exist.
342413081d7SNate Lawson      */
3432be4e471SJung-uk Kim     if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
3442be4e471SJung-uk Kim 	printf("ACPI: Table initialisation failed: %s\n",
3452be4e471SJung-uk Kim 	    AcpiFormatException(status));
3462be4e471SJung-uk Kim 	return_VALUE (status);
34715e32d5dSMike Smith     }
3483184cf5aSNate Lawson 
34989fb5af8SNate Lawson     /* Set up any quirks we have for this system. */
3502be4e471SJung-uk Kim     if (acpi_quirks == ACPI_Q_OK)
35189fb5af8SNate Lawson 	acpi_table_quirks(&acpi_quirks);
35289fb5af8SNate Lawson 
35339da3eb3SNate Lawson     /* If the user manually set the disabled hint to 0, force-enable ACPI. */
35489fb5af8SNate Lawson     if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
35589fb5af8SNate Lawson 	acpi_quirks &= ~ACPI_Q_BROKEN;
35689fb5af8SNate Lawson     if (acpi_quirks & ACPI_Q_BROKEN) {
35789fb5af8SNate Lawson 	printf("ACPI disabled by blacklist.  Contact your BIOS vendor.\n");
3582be4e471SJung-uk Kim 	status = AE_SUPPORT;
35989fb5af8SNate Lawson     }
3603184cf5aSNate Lawson 
3612be4e471SJung-uk Kim     return_VALUE (status);
362bbc2815cSJohn Baldwin }
363bbc2815cSJohn Baldwin 
364bbc2815cSJohn Baldwin /*
3655217af30SJohn Baldwin  * Detect ACPI and perform early initialisation.
366bbc2815cSJohn Baldwin  */
3675217af30SJohn Baldwin int
3685217af30SJohn Baldwin acpi_identify(void)
369bbc2815cSJohn Baldwin {
3705217af30SJohn Baldwin     ACPI_TABLE_RSDP	*rsdp;
3715217af30SJohn Baldwin     ACPI_TABLE_HEADER	*rsdt;
3725217af30SJohn Baldwin     ACPI_PHYSICAL_ADDRESS paddr;
3735217af30SJohn Baldwin     struct sbuf		sb;
374bbc2815cSJohn Baldwin 
375bbc2815cSJohn Baldwin     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
376bbc2815cSJohn Baldwin 
377bbc2815cSJohn Baldwin     if (!cold)
3785217af30SJohn Baldwin 	return (ENXIO);
379bbc2815cSJohn Baldwin 
380a8de37b0SEitan Adler     /* Check that we haven't been disabled with a hint. */
381a8de37b0SEitan Adler     if (resource_disabled("acpi", 0))
382a8de37b0SEitan Adler 	return (ENXIO);
383a8de37b0SEitan Adler 
3845217af30SJohn Baldwin     /* Check for other PM systems. */
3855217af30SJohn Baldwin     if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
3865217af30SJohn Baldwin 	power_pm_get_type() != POWER_PM_TYPE_ACPI) {
3875217af30SJohn Baldwin 	printf("ACPI identify failed, other PM system enabled.\n");
3885217af30SJohn Baldwin 	return (ENXIO);
3895217af30SJohn Baldwin     }
3904b1ff978SMark Santcroos 
3912be4e471SJung-uk Kim     /* Initialize root tables. */
3922be4e471SJung-uk Kim     if (ACPI_FAILURE(acpi_Startup())) {
3932be4e471SJung-uk Kim 	printf("ACPI: Try disabling either ACPI or apic support.\n");
3945217af30SJohn Baldwin 	return (ENXIO);
3952be4e471SJung-uk Kim     }
39615e32d5dSMike Smith 
3975217af30SJohn Baldwin     if ((paddr = AcpiOsGetRootPointer()) == 0 ||
3985217af30SJohn Baldwin 	(rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
3995217af30SJohn Baldwin 	return (ENXIO);
4005217af30SJohn Baldwin     if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
4015217af30SJohn Baldwin 	paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
4025217af30SJohn Baldwin     else
4035217af30SJohn Baldwin 	paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
4045217af30SJohn Baldwin     AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
4055217af30SJohn Baldwin 
4065217af30SJohn Baldwin     if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
4075217af30SJohn Baldwin 	return (ENXIO);
4085217af30SJohn Baldwin     sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN);
4095217af30SJohn Baldwin     sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
4105217af30SJohn Baldwin     sbuf_trim(&sb);
4115217af30SJohn Baldwin     sbuf_putc(&sb, ' ');
4125217af30SJohn Baldwin     sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
4135217af30SJohn Baldwin     sbuf_trim(&sb);
4145217af30SJohn Baldwin     sbuf_finish(&sb);
4155217af30SJohn Baldwin     sbuf_delete(&sb);
4165217af30SJohn Baldwin     AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
4175217af30SJohn Baldwin 
4185217af30SJohn Baldwin     snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
4195217af30SJohn Baldwin 
4205217af30SJohn Baldwin     return (0);
42115e32d5dSMike Smith }
42215e32d5dSMike Smith 
42315e32d5dSMike Smith /*
424bee4aa4aSNate Lawson  * Fetch some descriptive data from ACPI to put in our attach message.
42515e32d5dSMike Smith  */
42615e32d5dSMike Smith static int
42715e32d5dSMike Smith acpi_probe(device_t dev)
42815e32d5dSMike Smith {
42915e32d5dSMike Smith 
430b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
431f9390180SMitsuru IWASAKI 
4325217af30SJohn Baldwin     device_set_desc(dev, acpi_desc);
433bee4aa4aSNate Lawson 
434feeec74dSNathan Whitehorn     return_VALUE (BUS_PROBE_NOWILDCARD);
43515e32d5dSMike Smith }
43615e32d5dSMike Smith 
43715e32d5dSMike Smith static int
43815e32d5dSMike Smith acpi_attach(device_t dev)
43915e32d5dSMike Smith {
44015e32d5dSMike Smith     struct acpi_softc	*sc;
441cb9b0d80SMike Smith     ACPI_STATUS		status;
442ea27c63eSNate Lawson     int			error, state;
44332d18aa5SMike Smith     UINT32		flags;
444ea27c63eSNate Lawson     UINT8		TypeA, TypeB;
445498d464fSMitsuru IWASAKI     char		*env;
44615e32d5dSMike Smith 
447b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
448bee4aa4aSNate Lawson 
44915e32d5dSMike Smith     sc = device_get_softc(dev);
45015e32d5dSMike Smith     sc->acpi_dev = dev;
45100a30448SNate Lawson     callout_init(&sc->susp_force_to, TRUE);
45215e32d5dSMike Smith 
4532be4e471SJung-uk Kim     error = ENXIO;
4542be4e471SJung-uk Kim 
45591233413SNate Lawson     /* Initialize resource manager. */
45691233413SNate Lawson     acpi_rman_io.rm_type = RMAN_ARRAY;
45791233413SNate Lawson     acpi_rman_io.rm_start = 0;
45891233413SNate Lawson     acpi_rman_io.rm_end = 0xffff;
4590bba6acfSJohn Baldwin     acpi_rman_io.rm_descr = "ACPI I/O ports";
46091233413SNate Lawson     if (rman_init(&acpi_rman_io) != 0)
46191233413SNate Lawson 	panic("acpi rman_init IO ports failed");
46291233413SNate Lawson     acpi_rman_mem.rm_type = RMAN_ARRAY;
46391233413SNate Lawson     acpi_rman_mem.rm_start = 0;
46491233413SNate Lawson     acpi_rman_mem.rm_end = ~0ul;
4650bba6acfSJohn Baldwin     acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
46691233413SNate Lawson     if (rman_init(&acpi_rman_mem) != 0)
46791233413SNate Lawson 	panic("acpi rman_init memory failed");
46891233413SNate Lawson 
4692be4e471SJung-uk Kim     /* Initialise the ACPI mutex */
4702be4e471SJung-uk Kim     mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
4712be4e471SJung-uk Kim 
4722be4e471SJung-uk Kim     /*
4732be4e471SJung-uk Kim      * Set the globals from our tunables.  This is needed because ACPI-CA
4742be4e471SJung-uk Kim      * uses UINT8 for some values and we have no tunable_byte.
4752be4e471SJung-uk Kim      */
4762a18c71dSJung-uk Kim     AcpiGbl_AllMethodsSerialized = acpi_serialize_methods ? TRUE : FALSE;
4772a18c71dSJung-uk Kim     AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE;
4782a18c71dSJung-uk Kim     AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
4792a18c71dSJung-uk Kim 
4802a18c71dSJung-uk Kim #ifndef ACPI_DEBUG
4812a18c71dSJung-uk Kim     /*
4822a18c71dSJung-uk Kim      * Disable all debugging layers and levels.
4832a18c71dSJung-uk Kim      */
4842a18c71dSJung-uk Kim     AcpiDbgLayer = 0;
4852a18c71dSJung-uk Kim     AcpiDbgLevel = 0;
4862a18c71dSJung-uk Kim #endif
4872be4e471SJung-uk Kim 
4882be4e471SJung-uk Kim     /* Start up the ACPI CA subsystem. */
4892be4e471SJung-uk Kim     status = AcpiInitializeSubsystem();
4902be4e471SJung-uk Kim     if (ACPI_FAILURE(status)) {
4912be4e471SJung-uk Kim 	device_printf(dev, "Could not initialize Subsystem: %s\n",
4922be4e471SJung-uk Kim 		      AcpiFormatException(status));
4932be4e471SJung-uk Kim 	goto out;
4942be4e471SJung-uk Kim     }
4952be4e471SJung-uk Kim 
496ae19af49SJung-uk Kim     /* Override OS interfaces if the user requested. */
497ae19af49SJung-uk Kim     acpi_reset_interfaces(dev);
498ae19af49SJung-uk Kim 
4992be4e471SJung-uk Kim     /* Load ACPI name space. */
5002be4e471SJung-uk Kim     status = AcpiLoadTables();
5012be4e471SJung-uk Kim     if (ACPI_FAILURE(status)) {
5022be4e471SJung-uk Kim 	device_printf(dev, "Could not load Namespace: %s\n",
5032be4e471SJung-uk Kim 		      AcpiFormatException(status));
5042be4e471SJung-uk Kim 	goto out;
5052be4e471SJung-uk Kim     }
5062be4e471SJung-uk Kim 
507d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
508d320e05cSJohn Baldwin     /* Handle MCFG table if present. */
509d320e05cSJohn Baldwin     acpi_enable_pcie();
510d320e05cSJohn Baldwin #endif
511d320e05cSJohn Baldwin 
51215e32d5dSMike Smith     /*
513be2b1797SNate Lawson      * Note that some systems (specifically, those with namespace evaluation
514be2b1797SNate Lawson      * issues that require the avoidance of parts of the namespace) must
515be2b1797SNate Lawson      * avoid running _INI and _STA on everything, as well as dodging the final
516be2b1797SNate Lawson      * object init pass.
51715e32d5dSMike Smith      *
51832d18aa5SMike Smith      * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
51932d18aa5SMike Smith      *
520be2b1797SNate Lawson      * XXX We should arrange for the object init pass after we have attached
521be2b1797SNate Lawson      *     all our child devices, but on many systems it works here.
52215e32d5dSMike Smith      */
52332d18aa5SMike Smith     flags = 0;
524d786139cSMaxime Henrion     if (testenv("debug.acpi.avoid"))
52532d18aa5SMike Smith 	flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
526bee4aa4aSNate Lawson 
527bee4aa4aSNate Lawson     /* Bring the hardware and basic handlers online. */
528b53f2771SMike Smith     if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
529be2b1797SNate Lawson 	device_printf(dev, "Could not enable ACPI: %s\n",
530be2b1797SNate Lawson 		      AcpiFormatException(status));
531cb9b0d80SMike Smith 	goto out;
53215e32d5dSMike Smith     }
53315e32d5dSMike Smith 
534f8335e3aSNate Lawson     /*
535f8335e3aSNate Lawson      * Call the ECDT probe function to provide EC functionality before
536f8335e3aSNate Lawson      * the namespace has been evaluated.
537da72d149SNate Lawson      *
538da72d149SNate Lawson      * XXX This happens before the sysresource devices have been probed and
539da72d149SNate Lawson      * attached so its resources come from nexus0.  In practice, this isn't
540da72d149SNate Lawson      * a problem but should be addressed eventually.
541f8335e3aSNate Lawson      */
542f8335e3aSNate Lawson     acpi_ec_ecdt_probe(dev);
543f8335e3aSNate Lawson 
544bee4aa4aSNate Lawson     /* Bring device objects and regions online. */
545b69ed3f4SMitsuru IWASAKI     if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
546be2b1797SNate Lawson 	device_printf(dev, "Could not initialize ACPI objects: %s\n",
547be2b1797SNate Lawson 		      AcpiFormatException(status));
548b69ed3f4SMitsuru IWASAKI 	goto out;
549b69ed3f4SMitsuru IWASAKI     }
550b69ed3f4SMitsuru IWASAKI 
55115e32d5dSMike Smith     /*
5521d073b1dSJohn Baldwin      * Setup our sysctl tree.
5531d073b1dSJohn Baldwin      *
5541d073b1dSJohn Baldwin      * XXX: This doesn't check to make sure that none of these fail.
5551d073b1dSJohn Baldwin      */
5561d073b1dSJohn Baldwin     sysctl_ctx_init(&sc->acpi_sysctl_ctx);
5571d073b1dSJohn Baldwin     sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
5581d073b1dSJohn Baldwin 			       SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
5591d073b1dSJohn Baldwin 			       device_get_name(dev), CTLFLAG_RD, 0, "");
5601d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
561d75de536SMitsuru IWASAKI 	OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
562d75de536SMitsuru IWASAKI 	0, 0, acpi_supported_sleep_state_sysctl, "A", "");
563d75de536SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5641d073b1dSJohn Baldwin 	OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
5651d073b1dSJohn Baldwin 	&sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
5661d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5671d073b1dSJohn Baldwin 	OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
5681d073b1dSJohn Baldwin 	&sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
5691d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5701d073b1dSJohn Baldwin 	OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
5711d073b1dSJohn Baldwin 	&sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
572f86214b6SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
573f86214b6SMitsuru IWASAKI 	OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
574f86214b6SMitsuru IWASAKI 	&sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
575f86214b6SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
576f86214b6SMitsuru IWASAKI 	OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
577f86214b6SMitsuru IWASAKI 	&sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
5782d644607SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
579197b4dccSNate Lawson 	OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
58031f301d0SChristian Brueffer 	"sleep delay in seconds");
581ff01efb5SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
582197b4dccSNate Lawson 	OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
5831611ea87SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
584197b4dccSNate Lawson 	OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
585d85e6785SNate Lawson     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
586d85e6785SNate Lawson 	OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
587d85e6785SNate Lawson 	&sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
588d1b16e18SNate Lawson     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
589d1b16e18SNate Lawson 	OID_AUTO, "handle_reboot", CTLFLAG_RW,
590d1b16e18SNate Lawson 	&sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
591bf0c18ecSNate Lawson 
592bf0c18ecSNate Lawson     /*
5932b9609abSNate Lawson      * Default to 1 second before sleeping to give some machines time to
594bf0c18ecSNate Lawson      * stabilize.
595bf0c18ecSNate Lawson      */
5962b9609abSNate Lawson     sc->acpi_sleep_delay = 1;
5972d644607SMitsuru IWASAKI     if (bootverbose)
5982d644607SMitsuru IWASAKI 	sc->acpi_verbose = 1;
599965a34fbSNate Lawson     if ((env = getenv("hw.acpi.verbose")) != NULL) {
600965a34fbSNate Lawson 	if (strcmp(env, "0") != 0)
601498d464fSMitsuru IWASAKI 	    sc->acpi_verbose = 1;
602498d464fSMitsuru IWASAKI 	freeenv(env);
603498d464fSMitsuru IWASAKI     }
6041d073b1dSJohn Baldwin 
605ac731af5SJung-uk Kim     /* Only enable reboot by default if the FADT says it is available. */
606ac731af5SJung-uk Kim     if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER)
607ac731af5SJung-uk Kim 	sc->acpi_handle_reboot = 1;
608ac731af5SJung-uk Kim 
6092d610c46SNate Lawson     /* Only enable S4BIOS by default if the FACS says it is available. */
610129d3046SJung-uk Kim     if (AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
6112d610c46SNate Lawson 	sc->acpi_s4bios = 1;
6122d610c46SNate Lawson 
613a0e73a12SJung-uk Kim     /* Probe all supported sleep states. */
614a0e73a12SJung-uk Kim     acpi_sleep_states[ACPI_STATE_S0] = TRUE;
615a0e73a12SJung-uk Kim     for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
616efcc2a30SJung-uk Kim 	if (ACPI_SUCCESS(AcpiEvaluateObject(ACPI_ROOT_OBJECT,
617efcc2a30SJung-uk Kim 	    __DECONST(char *, AcpiGbl_SleepStateNames[state]), NULL, NULL)) &&
618efcc2a30SJung-uk Kim 	    ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
619a0e73a12SJung-uk Kim 	    acpi_sleep_states[state] = TRUE;
620a0e73a12SJung-uk Kim 
6211d073b1dSJohn Baldwin     /*
622ea27c63eSNate Lawson      * Dispatch the default sleep state to devices.  The lid switch is set
623a0e73a12SJung-uk Kim      * to UNKNOWN by default to avoid surprising users.
62415e32d5dSMike Smith      */
625a0e73a12SJung-uk Kim     sc->acpi_power_button_sx = acpi_sleep_states[ACPI_STATE_S5] ?
626a0e73a12SJung-uk Kim 	ACPI_STATE_S5 : ACPI_STATE_UNKNOWN;
627a0e73a12SJung-uk Kim     sc->acpi_lid_switch_sx = ACPI_STATE_UNKNOWN;
628a0e73a12SJung-uk Kim     sc->acpi_standby_sx = acpi_sleep_states[ACPI_STATE_S1] ?
629a0e73a12SJung-uk Kim 	ACPI_STATE_S1 : ACPI_STATE_UNKNOWN;
630a0e73a12SJung-uk Kim     sc->acpi_suspend_sx = acpi_sleep_states[ACPI_STATE_S3] ?
631a0e73a12SJung-uk Kim 	ACPI_STATE_S3 : ACPI_STATE_UNKNOWN;
63215e32d5dSMike Smith 
633ea27c63eSNate Lawson     /* Pick the first valid sleep state for the sleep button default. */
634a0e73a12SJung-uk Kim     sc->acpi_sleep_button_sx = ACPI_STATE_UNKNOWN;
63500a30448SNate Lawson     for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
636a0e73a12SJung-uk Kim 	if (acpi_sleep_states[state]) {
637ea27c63eSNate Lawson 	    sc->acpi_sleep_button_sx = state;
638ea27c63eSNate Lawson 	    break;
639ea27c63eSNate Lawson 	}
640ea27c63eSNate Lawson 
64113d4f7baSMitsuru IWASAKI     acpi_enable_fixed_events(sc);
64215e32d5dSMike Smith 
64315e32d5dSMike Smith     /*
64415e32d5dSMike Smith      * Scan the namespace and attach/initialise children.
64515e32d5dSMike Smith      */
64615e32d5dSMike Smith 
64759e472e9SNate Lawson     /* Register our shutdown handler. */
648be2b1797SNate Lawson     EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
649be2b1797SNate Lawson 	SHUTDOWN_PRI_LAST);
65015e32d5dSMike Smith 
65115e32d5dSMike Smith     /*
65215e32d5dSMike Smith      * Register our acpi event handlers.
65315e32d5dSMike Smith      * XXX should be configurable eg. via userland policy manager.
65415e32d5dSMike Smith      */
655be2b1797SNate Lawson     EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
656be2b1797SNate Lawson 	sc, ACPI_EVENT_PRI_LAST);
657be2b1797SNate Lawson     EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
658be2b1797SNate Lawson 	sc, ACPI_EVENT_PRI_LAST);
65915e32d5dSMike Smith 
660be2b1797SNate Lawson     /* Flag our initial states. */
661a0e73a12SJung-uk Kim     sc->acpi_enabled = TRUE;
66215e32d5dSMike Smith     sc->acpi_sstate = ACPI_STATE_S0;
663a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = TRUE;
66415e32d5dSMike Smith 
665be2b1797SNate Lawson     /* Create the control device */
666a89fcf28STakanori Watanabe     sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
6672a4689e8SRobert Watson 			      "acpi");
66815e32d5dSMike Smith     sc->acpi_dev_t->si_drv1 = sc;
66915e32d5dSMike Smith 
670be2b1797SNate Lawson     if ((error = acpi_machdep_init(dev)))
671f86214b6SMitsuru IWASAKI 	goto out;
672f86214b6SMitsuru IWASAKI 
673f9390180SMitsuru IWASAKI     /* Register ACPI again to pass the correct argument of pm_func. */
674f9390180SMitsuru IWASAKI     power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
675f9390180SMitsuru IWASAKI 
676eeb6dba2SJohn Baldwin     if (!acpi_disabled("bus"))
677eeb6dba2SJohn Baldwin 	acpi_probe_children(dev);
678eeb6dba2SJohn Baldwin 
6795a77b11bSJung-uk Kim     /* Update all GPEs and enable runtime GPEs. */
6805a77b11bSJung-uk Kim     status = AcpiUpdateAllGpes();
6815a77b11bSJung-uk Kim     if (ACPI_FAILURE(status))
6825a77b11bSJung-uk Kim 	device_printf(dev, "Could not update all GPEs: %s\n",
6835a77b11bSJung-uk Kim 	    AcpiFormatException(status));
6845a77b11bSJung-uk Kim 
685a0e73a12SJung-uk Kim     /* Allow sleep request after a while. */
686a0e73a12SJung-uk Kim     timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME);
687a0e73a12SJung-uk Kim 
688cb9b0d80SMike Smith     error = 0;
689cb9b0d80SMike Smith 
690cb9b0d80SMike Smith  out:
691cb9b0d80SMike Smith     return_VALUE (error);
69215e32d5dSMike Smith }
69315e32d5dSMike Smith 
694a7a3177fSJung-uk Kim static void
695a7a3177fSJung-uk Kim acpi_set_power_children(device_t dev, int state)
696a7a3177fSJung-uk Kim {
697a7a3177fSJung-uk Kim 	device_t child, parent;
698a7a3177fSJung-uk Kim 	device_t *devlist;
699a7a3177fSJung-uk Kim 	int dstate, i, numdevs;
700a7a3177fSJung-uk Kim 
701a7a3177fSJung-uk Kim 	if (device_get_children(dev, &devlist, &numdevs) != 0)
702a7a3177fSJung-uk Kim 		return;
703a7a3177fSJung-uk Kim 
704a7a3177fSJung-uk Kim 	/*
705a7a3177fSJung-uk Kim 	 * Retrieve and set D-state for the sleep state if _SxD is present.
706a7a3177fSJung-uk Kim 	 * Skip children who aren't attached since they are handled separately.
707a7a3177fSJung-uk Kim 	 */
708a7a3177fSJung-uk Kim 	parent = device_get_parent(dev);
709a7a3177fSJung-uk Kim 	for (i = 0; i < numdevs; i++) {
710a7a3177fSJung-uk Kim 		child = devlist[i];
711a7a3177fSJung-uk Kim 		dstate = state;
712a7a3177fSJung-uk Kim 		if (device_is_attached(child) &&
713a7a3177fSJung-uk Kim 		    acpi_device_pwr_for_sleep(parent, dev, &dstate) == 0)
714a7a3177fSJung-uk Kim 			acpi_set_powerstate(child, dstate);
715a7a3177fSJung-uk Kim 	}
716a7a3177fSJung-uk Kim 	free(devlist, M_TEMP);
717a7a3177fSJung-uk Kim }
718a7a3177fSJung-uk Kim 
719169b539aSNate Lawson static int
72010ce62b9SNate Lawson acpi_suspend(device_t dev)
72110ce62b9SNate Lawson {
722a7a3177fSJung-uk Kim     int error;
72310ce62b9SNate Lawson 
724a56fe095SJohn Baldwin     GIANT_REQUIRED;
725a56fe095SJohn Baldwin 
72610ce62b9SNate Lawson     error = bus_generic_suspend(dev);
727a7a3177fSJung-uk Kim     if (error == 0)
728a7a3177fSJung-uk Kim 	acpi_set_power_children(dev, ACPI_STATE_D3);
72910ce62b9SNate Lawson 
73010ce62b9SNate Lawson     return (error);
73110ce62b9SNate Lawson }
73210ce62b9SNate Lawson 
73310ce62b9SNate Lawson static int
73410ce62b9SNate Lawson acpi_resume(device_t dev)
73510ce62b9SNate Lawson {
73610ce62b9SNate Lawson 
737a56fe095SJohn Baldwin     GIANT_REQUIRED;
738a56fe095SJohn Baldwin 
739a7a3177fSJung-uk Kim     acpi_set_power_children(dev, ACPI_STATE_D0);
74010ce62b9SNate Lawson 
74110ce62b9SNate Lawson     return (bus_generic_resume(dev));
74210ce62b9SNate Lawson }
74310ce62b9SNate Lawson 
74410ce62b9SNate Lawson static int
745169b539aSNate Lawson acpi_shutdown(device_t dev)
746169b539aSNate Lawson {
747169b539aSNate Lawson 
748a56fe095SJohn Baldwin     GIANT_REQUIRED;
749a56fe095SJohn Baldwin 
7500e414868SNate Lawson     /* Allow children to shutdown first. */
7510e414868SNate Lawson     bus_generic_shutdown(dev);
7520e414868SNate Lawson 
753bee4aa4aSNate Lawson     /*
754bee4aa4aSNate Lawson      * Enable any GPEs that are able to power-on the system (i.e., RTC).
755bee4aa4aSNate Lawson      * Also, disable any that are not valid for this state (most).
756bee4aa4aSNate Lawson      */
757d4b9ff91SNate Lawson     acpi_wake_prep_walk(ACPI_STATE_S5);
758d4b9ff91SNate Lawson 
759169b539aSNate Lawson     return (0);
760169b539aSNate Lawson }
761169b539aSNate Lawson 
76215e32d5dSMike Smith /*
76315e32d5dSMike Smith  * Handle a new device being added
76415e32d5dSMike Smith  */
76515e32d5dSMike Smith static device_t
7663d844eddSAndriy Gapon acpi_add_child(device_t bus, u_int order, const char *name, int unit)
76715e32d5dSMike Smith {
76815e32d5dSMike Smith     struct acpi_device	*ad;
76915e32d5dSMike Smith     device_t		child;
77015e32d5dSMike Smith 
771be2b1797SNate Lawson     if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
77215e32d5dSMike Smith 	return (NULL);
77315e32d5dSMike Smith 
77415e32d5dSMike Smith     resource_list_init(&ad->ad_rl);
77515e32d5dSMike Smith 
77615e32d5dSMike Smith     child = device_add_child_ordered(bus, order, name, unit);
77715e32d5dSMike Smith     if (child != NULL)
77815e32d5dSMike Smith 	device_set_ivars(child, ad);
77943ce1c77SNate Lawson     else
78043ce1c77SNate Lawson 	free(ad, M_ACPIDEV);
78115e32d5dSMike Smith     return (child);
78215e32d5dSMike Smith }
78315e32d5dSMike Smith 
78415e32d5dSMike Smith static int
78515e32d5dSMike Smith acpi_print_child(device_t bus, device_t child)
78615e32d5dSMike Smith {
78715e32d5dSMike Smith     struct acpi_device	 *adev = device_get_ivars(child);
78815e32d5dSMike Smith     struct resource_list *rl = &adev->ad_rl;
78915e32d5dSMike Smith     int retval = 0;
79015e32d5dSMike Smith 
79115e32d5dSMike Smith     retval += bus_print_child_header(bus, child);
7929ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "port",  SYS_RES_IOPORT, "%#lx");
7939ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
7949ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "irq",   SYS_RES_IRQ,    "%ld");
7959ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "drq",   SYS_RES_DRQ,    "%ld");
796a91c5fa8SNate Lawson     if (device_get_flags(child))
797a91c5fa8SNate Lawson 	retval += printf(" flags %#x", device_get_flags(child));
7982c8d3b23SNate Lawson     retval += bus_print_child_footer(bus, child);
79915e32d5dSMike Smith 
80015e32d5dSMike Smith     return (retval);
80115e32d5dSMike Smith }
80215e32d5dSMike Smith 
80310ce62b9SNate Lawson /*
80410ce62b9SNate Lawson  * If this device is an ACPI child but no one claimed it, attempt
80510ce62b9SNate Lawson  * to power it off.  We'll power it back up when a driver is added.
80610ce62b9SNate Lawson  *
80710ce62b9SNate Lawson  * XXX Disabled for now since many necessary devices (like fdc and
80810ce62b9SNate Lawson  * ATA) don't claim the devices we created for them but still expect
80910ce62b9SNate Lawson  * them to be powered up.
81010ce62b9SNate Lawson  */
81110ce62b9SNate Lawson static void
81210ce62b9SNate Lawson acpi_probe_nomatch(device_t bus, device_t child)
81310ce62b9SNate Lawson {
81496cf0b6dSWarner Losh #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
815a7a3177fSJung-uk Kim     acpi_set_powerstate(child, ACPI_STATE_D3);
81696cf0b6dSWarner Losh #endif
81710ce62b9SNate Lawson }
81810ce62b9SNate Lawson 
81910ce62b9SNate Lawson /*
82010ce62b9SNate Lawson  * If a new driver has a chance to probe a child, first power it up.
82110ce62b9SNate Lawson  *
82210ce62b9SNate Lawson  * XXX Disabled for now (see acpi_probe_nomatch for details).
82310ce62b9SNate Lawson  */
82410ce62b9SNate Lawson static void
82510ce62b9SNate Lawson acpi_driver_added(device_t dev, driver_t *driver)
82610ce62b9SNate Lawson {
82710ce62b9SNate Lawson     device_t child, *devlist;
82810ce62b9SNate Lawson     int i, numdevs;
82910ce62b9SNate Lawson 
83010ce62b9SNate Lawson     DEVICE_IDENTIFY(driver, dev);
831099ea4b5SWarner Losh     if (device_get_children(dev, &devlist, &numdevs))
832099ea4b5SWarner Losh 	    return;
83310ce62b9SNate Lawson     for (i = 0; i < numdevs; i++) {
83410ce62b9SNate Lawson 	child = devlist[i];
83510ce62b9SNate Lawson 	if (device_get_state(child) == DS_NOTPRESENT) {
83696cf0b6dSWarner Losh #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
837a7a3177fSJung-uk Kim 	    acpi_set_powerstate(child, ACPI_STATE_D0);
83810ce62b9SNate Lawson 	    if (device_probe_and_attach(child) != 0)
839a7a3177fSJung-uk Kim 		acpi_set_powerstate(child, ACPI_STATE_D3);
84096cf0b6dSWarner Losh #else
84196cf0b6dSWarner Losh 	    device_probe_and_attach(child);
84296cf0b6dSWarner Losh #endif
84310ce62b9SNate Lawson 	}
84410ce62b9SNate Lawson     }
84510ce62b9SNate Lawson     free(devlist, M_TEMP);
84610ce62b9SNate Lawson }
84710ce62b9SNate Lawson 
84863600cc3SNate Lawson /* Location hint for devctl(8) */
84963600cc3SNate Lawson static int
850247648afSTakanori Watanabe acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
851247648afSTakanori Watanabe     size_t buflen)
852247648afSTakanori Watanabe {
853247648afSTakanori Watanabe     struct acpi_device *dinfo = device_get_ivars(child);
854*9cf5a6aaSAdrian Chadd     char buf2[32];
855*9cf5a6aaSAdrian Chadd     int pxm;
856247648afSTakanori Watanabe 
857*9cf5a6aaSAdrian Chadd     if (dinfo->ad_handle) {
858d40c0f53SNate Lawson         snprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
859*9cf5a6aaSAdrian Chadd         if (ACPI_SUCCESS(acpi_GetInteger(dinfo->ad_handle, "_PXM", &pxm))) {
860*9cf5a6aaSAdrian Chadd                 snprintf(buf2, 32, " _PXM=%d", pxm);
861*9cf5a6aaSAdrian Chadd                 strlcat(buf, buf2, buflen);
862*9cf5a6aaSAdrian Chadd         }
863*9cf5a6aaSAdrian Chadd     } else {
864d40c0f53SNate Lawson         snprintf(buf, buflen, "unknown");
865*9cf5a6aaSAdrian Chadd     }
866247648afSTakanori Watanabe     return (0);
867247648afSTakanori Watanabe }
868247648afSTakanori Watanabe 
86963600cc3SNate Lawson /* PnP information for devctl(8) */
87063600cc3SNate Lawson static int
871247648afSTakanori Watanabe acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
872247648afSTakanori Watanabe     size_t buflen)
873247648afSTakanori Watanabe {
87463600cc3SNate Lawson     struct acpi_device *dinfo = device_get_ivars(child);
87592488a57SJung-uk Kim     ACPI_DEVICE_INFO *adinfo;
876247648afSTakanori Watanabe 
87792488a57SJung-uk Kim     if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo))) {
878d40c0f53SNate Lawson 	snprintf(buf, buflen, "unknown");
87992488a57SJung-uk Kim 	return (0);
88092488a57SJung-uk Kim     }
88192488a57SJung-uk Kim 
882247648afSTakanori Watanabe     snprintf(buf, buflen, "_HID=%s _UID=%lu",
883247648afSTakanori Watanabe 	(adinfo->Valid & ACPI_VALID_HID) ?
88492488a57SJung-uk Kim 	adinfo->HardwareId.String : "none",
88563600cc3SNate Lawson 	(adinfo->Valid & ACPI_VALID_UID) ?
88692488a57SJung-uk Kim 	strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL);
887247648afSTakanori Watanabe     AcpiOsFree(adinfo);
888247648afSTakanori Watanabe 
889247648afSTakanori Watanabe     return (0);
890247648afSTakanori Watanabe }
891247648afSTakanori Watanabe 
892247648afSTakanori Watanabe /*
89315e32d5dSMike Smith  * Handle per-device ivars
89415e32d5dSMike Smith  */
89515e32d5dSMike Smith static int
89615e32d5dSMike Smith acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
89715e32d5dSMike Smith {
89815e32d5dSMike Smith     struct acpi_device	*ad;
89915e32d5dSMike Smith 
90015e32d5dSMike Smith     if ((ad = device_get_ivars(child)) == NULL) {
9012d0c82e8SJung-uk Kim 	device_printf(child, "device has no ivars\n");
90215e32d5dSMike Smith 	return (ENOENT);
90315e32d5dSMike Smith     }
90415e32d5dSMike Smith 
905be2b1797SNate Lawson     /* ACPI and ISA compatibility ivars */
90615e32d5dSMike Smith     switch(index) {
90715e32d5dSMike Smith     case ACPI_IVAR_HANDLE:
90815e32d5dSMike Smith 	*(ACPI_HANDLE *)result = ad->ad_handle;
90915e32d5dSMike Smith 	break;
91015e32d5dSMike Smith     case ACPI_IVAR_PRIVATE:
91115e32d5dSMike Smith 	*(void **)result = ad->ad_private;
91215e32d5dSMike Smith 	break;
913d4b9ff91SNate Lawson     case ACPI_IVAR_FLAGS:
914d4b9ff91SNate Lawson 	*(int *)result = ad->ad_flags;
915d4b9ff91SNate Lawson 	break;
91632d18aa5SMike Smith     case ISA_IVAR_VENDORID:
91732d18aa5SMike Smith     case ISA_IVAR_SERIAL:
91832d18aa5SMike Smith     case ISA_IVAR_COMPATID:
91932d18aa5SMike Smith 	*(int *)result = -1;
92032d18aa5SMike Smith 	break;
92132d18aa5SMike Smith     case ISA_IVAR_LOGICALID:
92232d18aa5SMike Smith 	*(int *)result = acpi_isa_get_logicalid(child);
92332d18aa5SMike Smith 	break;
92415e32d5dSMike Smith     default:
92515e32d5dSMike Smith 	return (ENOENT);
92615e32d5dSMike Smith     }
927be2b1797SNate Lawson 
92815e32d5dSMike Smith     return (0);
92915e32d5dSMike Smith }
93015e32d5dSMike Smith 
93115e32d5dSMike Smith static int
93215e32d5dSMike Smith acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
93315e32d5dSMike Smith {
93415e32d5dSMike Smith     struct acpi_device	*ad;
93515e32d5dSMike Smith 
93615e32d5dSMike Smith     if ((ad = device_get_ivars(child)) == NULL) {
9372d0c82e8SJung-uk Kim 	device_printf(child, "device has no ivars\n");
93815e32d5dSMike Smith 	return (ENOENT);
93915e32d5dSMike Smith     }
94015e32d5dSMike Smith 
94115e32d5dSMike Smith     switch(index) {
94215e32d5dSMike Smith     case ACPI_IVAR_HANDLE:
94315e32d5dSMike Smith 	ad->ad_handle = (ACPI_HANDLE)value;
94415e32d5dSMike Smith 	break;
94515e32d5dSMike Smith     case ACPI_IVAR_PRIVATE:
94615e32d5dSMike Smith 	ad->ad_private = (void *)value;
94715e32d5dSMike Smith 	break;
948d4b9ff91SNate Lawson     case ACPI_IVAR_FLAGS:
949d4b9ff91SNate Lawson 	ad->ad_flags = (int)value;
950d4b9ff91SNate Lawson 	break;
95115e32d5dSMike Smith     default:
9522ab060eeSWarner Losh 	panic("bad ivar write request (%d)", index);
95315e32d5dSMike Smith 	return (ENOENT);
95415e32d5dSMike Smith     }
955be2b1797SNate Lawson 
95615e32d5dSMike Smith     return (0);
95715e32d5dSMike Smith }
95815e32d5dSMike Smith 
95915e32d5dSMike Smith /*
96015e32d5dSMike Smith  * Handle child resource allocation/removal
96115e32d5dSMike Smith  */
96291233413SNate Lawson static struct resource_list *
96391233413SNate Lawson acpi_get_rlist(device_t dev, device_t child)
96415e32d5dSMike Smith {
96591233413SNate Lawson     struct acpi_device		*ad;
96615e32d5dSMike Smith 
96791233413SNate Lawson     ad = device_get_ivars(child);
96891233413SNate Lawson     return (&ad->ad_rl);
96915e32d5dSMike Smith }
97015e32d5dSMike Smith 
9710d484d24SJohn Baldwin static int
9720d484d24SJohn Baldwin acpi_match_resource_hint(device_t dev, int type, long value)
9730d484d24SJohn Baldwin {
9740d484d24SJohn Baldwin     struct acpi_device *ad = device_get_ivars(dev);
9750d484d24SJohn Baldwin     struct resource_list *rl = &ad->ad_rl;
9760d484d24SJohn Baldwin     struct resource_list_entry *rle;
9770d484d24SJohn Baldwin 
9780d484d24SJohn Baldwin     STAILQ_FOREACH(rle, rl, link) {
9790d484d24SJohn Baldwin 	if (rle->type != type)
9800d484d24SJohn Baldwin 	    continue;
9810d484d24SJohn Baldwin 	if (rle->start <= value && rle->end >= value)
9820d484d24SJohn Baldwin 	    return (1);
9830d484d24SJohn Baldwin     }
9840d484d24SJohn Baldwin     return (0);
9850d484d24SJohn Baldwin }
9860d484d24SJohn Baldwin 
9870d484d24SJohn Baldwin /*
9880d484d24SJohn Baldwin  * Wire device unit numbers based on resource matches in hints.
9890d484d24SJohn Baldwin  */
9900d484d24SJohn Baldwin static void
9910d484d24SJohn Baldwin acpi_hint_device_unit(device_t acdev, device_t child, const char *name,
9920d484d24SJohn Baldwin     int *unitp)
9930d484d24SJohn Baldwin {
9940d484d24SJohn Baldwin     const char *s;
9950d484d24SJohn Baldwin     long value;
9960d484d24SJohn Baldwin     int line, matches, unit;
9970d484d24SJohn Baldwin 
9980d484d24SJohn Baldwin     /*
9990d484d24SJohn Baldwin      * Iterate over all the hints for the devices with the specified
10000d484d24SJohn Baldwin      * name to see if one's resources are a subset of this device.
10010d484d24SJohn Baldwin      */
10020d484d24SJohn Baldwin     line = 0;
10030d484d24SJohn Baldwin     for (;;) {
10040d484d24SJohn Baldwin 	if (resource_find_dev(&line, name, &unit, "at", NULL) != 0)
10050d484d24SJohn Baldwin 	    break;
10060d484d24SJohn Baldwin 
10070d484d24SJohn Baldwin 	/* Must have an "at" for acpi or isa. */
10080d484d24SJohn Baldwin 	resource_string_value(name, unit, "at", &s);
10090d484d24SJohn Baldwin 	if (!(strcmp(s, "acpi0") == 0 || strcmp(s, "acpi") == 0 ||
10100d484d24SJohn Baldwin 	    strcmp(s, "isa0") == 0 || strcmp(s, "isa") == 0))
10110d484d24SJohn Baldwin 	    continue;
10120d484d24SJohn Baldwin 
10130d484d24SJohn Baldwin 	/*
10142fcd493cSJohn Baldwin 	 * Check for matching resources.  We must have at least one match.
10152fcd493cSJohn Baldwin 	 * Since I/O and memory resources cannot be shared, if we get a
10162fcd493cSJohn Baldwin 	 * match on either of those, ignore any mismatches in IRQs or DRQs.
10170d484d24SJohn Baldwin 	 *
10180d484d24SJohn Baldwin 	 * XXX: We may want to revisit this to be more lenient and wire
10190d484d24SJohn Baldwin 	 * as long as it gets one match.
10200d484d24SJohn Baldwin 	 */
10210d484d24SJohn Baldwin 	matches = 0;
10220d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "port", &value) == 0) {
10232fcd493cSJohn Baldwin 	    /*
10242fcd493cSJohn Baldwin 	     * Floppy drive controllers are notorious for having a
10252fcd493cSJohn Baldwin 	     * wide variety of resources not all of which include the
10262fcd493cSJohn Baldwin 	     * first port that is specified by the hint (typically
10272fcd493cSJohn Baldwin 	     * 0x3f0) (see the comment above fdc_isa_alloc_resources()
10282fcd493cSJohn Baldwin 	     * in fdc_isa.c).  However, they do all seem to include
10292fcd493cSJohn Baldwin 	     * port + 2 (e.g. 0x3f2) so for a floppy device, look for
10302fcd493cSJohn Baldwin 	     * 'value + 2' in the port resources instead of the hint
10312fcd493cSJohn Baldwin 	     * value.
10322fcd493cSJohn Baldwin 	     */
10332fcd493cSJohn Baldwin 	    if (strcmp(name, "fdc") == 0)
10342fcd493cSJohn Baldwin 		value += 2;
10350d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value))
10360d484d24SJohn Baldwin 		matches++;
10370d484d24SJohn Baldwin 	    else
10380d484d24SJohn Baldwin 		continue;
10390d484d24SJohn Baldwin 	}
10400d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "maddr", &value) == 0) {
10410d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_MEMORY, value))
10420d484d24SJohn Baldwin 		matches++;
10430d484d24SJohn Baldwin 	    else
10440d484d24SJohn Baldwin 		continue;
10450d484d24SJohn Baldwin 	}
10462fcd493cSJohn Baldwin 	if (matches > 0)
10472fcd493cSJohn Baldwin 	    goto matched;
10480d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "irq", &value) == 0) {
10490d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_IRQ, value))
10500d484d24SJohn Baldwin 		matches++;
10510d484d24SJohn Baldwin 	    else
10520d484d24SJohn Baldwin 		continue;
10530d484d24SJohn Baldwin 	}
10540d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "drq", &value) == 0) {
10550d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_DRQ, value))
10560d484d24SJohn Baldwin 		matches++;
10570d484d24SJohn Baldwin 	    else
10580d484d24SJohn Baldwin 		continue;
10590d484d24SJohn Baldwin 	}
10600d484d24SJohn Baldwin 
10612fcd493cSJohn Baldwin     matched:
10620d484d24SJohn Baldwin 	if (matches > 0) {
10630d484d24SJohn Baldwin 	    /* We have a winner! */
10640d484d24SJohn Baldwin 	    *unitp = unit;
10650d484d24SJohn Baldwin 	    break;
10660d484d24SJohn Baldwin 	}
10670d484d24SJohn Baldwin     }
10680d484d24SJohn Baldwin }
10690d484d24SJohn Baldwin 
1070adad4744SNate Lawson /*
1071adad4744SNate Lawson  * Pre-allocate/manage all memory and IO resources.  Since rman can't handle
1072adad4744SNate Lawson  * duplicates, we merge any in the sysresource attach routine.
1073adad4744SNate Lawson  */
1074adad4744SNate Lawson static int
1075adad4744SNate Lawson acpi_sysres_alloc(device_t dev)
1076adad4744SNate Lawson {
1077adad4744SNate Lawson     struct resource *res;
1078adad4744SNate Lawson     struct resource_list *rl;
1079adad4744SNate Lawson     struct resource_list_entry *rle;
1080adad4744SNate Lawson     struct rman *rm;
1081da72d149SNate Lawson     char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1082da72d149SNate Lawson     device_t *children;
1083da72d149SNate Lawson     int child_count, i;
1084da72d149SNate Lawson 
1085da72d149SNate Lawson     /*
1086da72d149SNate Lawson      * Probe/attach any sysresource devices.  This would be unnecessary if we
1087da72d149SNate Lawson      * had multi-pass probe/attach.
1088da72d149SNate Lawson      */
1089da72d149SNate Lawson     if (device_get_children(dev, &children, &child_count) != 0)
1090da72d149SNate Lawson 	return (ENXIO);
1091da72d149SNate Lawson     for (i = 0; i < child_count; i++) {
1092da72d149SNate Lawson 	if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1093da72d149SNate Lawson 	    device_probe_and_attach(children[i]);
1094da72d149SNate Lawson     }
1095da72d149SNate Lawson     free(children, M_TEMP);
1096adad4744SNate Lawson 
1097adad4744SNate Lawson     rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
1098be1bf4d2SPoul-Henning Kamp     STAILQ_FOREACH(rle, rl, link) {
1099adad4744SNate Lawson 	if (rle->res != NULL) {
1100adad4744SNate Lawson 	    device_printf(dev, "duplicate resource for %lx\n", rle->start);
1101adad4744SNate Lawson 	    continue;
1102adad4744SNate Lawson 	}
1103adad4744SNate Lawson 
1104adad4744SNate Lawson 	/* Only memory and IO resources are valid here. */
1105adad4744SNate Lawson 	switch (rle->type) {
1106adad4744SNate Lawson 	case SYS_RES_IOPORT:
1107adad4744SNate Lawson 	    rm = &acpi_rman_io;
1108adad4744SNate Lawson 	    break;
1109adad4744SNate Lawson 	case SYS_RES_MEMORY:
1110adad4744SNate Lawson 	    rm = &acpi_rman_mem;
1111adad4744SNate Lawson 	    break;
1112adad4744SNate Lawson 	default:
1113adad4744SNate Lawson 	    continue;
1114adad4744SNate Lawson 	}
1115adad4744SNate Lawson 
1116adad4744SNate Lawson 	/* Pre-allocate resource and add to our rman pool. */
1117adad4744SNate Lawson 	res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1118adad4744SNate Lawson 	    &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
1119adad4744SNate Lawson 	if (res != NULL) {
1120adad4744SNate Lawson 	    rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1121adad4744SNate Lawson 	    rle->res = res;
1122adad4744SNate Lawson 	} else
1123adad4744SNate Lawson 	    device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1124adad4744SNate Lawson 		rle->start, rle->count, rle->type);
1125adad4744SNate Lawson     }
1126adad4744SNate Lawson     return (0);
1127adad4744SNate Lawson }
1128adad4744SNate Lawson 
1129ea233199SJohn Baldwin static char *pcilink_ids[] = { "PNP0C0F", NULL };
1130ea233199SJohn Baldwin static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1131ea233199SJohn Baldwin 
1132ea233199SJohn Baldwin /*
1133ea233199SJohn Baldwin  * Reserve declared resources for devices found during attach once system
1134ea233199SJohn Baldwin  * resources have been allocated.
1135ea233199SJohn Baldwin  */
1136ea233199SJohn Baldwin static void
1137ea233199SJohn Baldwin acpi_reserve_resources(device_t dev)
1138ea233199SJohn Baldwin {
1139ea233199SJohn Baldwin     struct resource_list_entry *rle;
1140ea233199SJohn Baldwin     struct resource_list *rl;
1141ea233199SJohn Baldwin     struct acpi_device *ad;
1142ea233199SJohn Baldwin     struct acpi_softc *sc;
1143ea233199SJohn Baldwin     device_t *children;
1144ea233199SJohn Baldwin     int child_count, i;
1145ea233199SJohn Baldwin 
1146ea233199SJohn Baldwin     sc = device_get_softc(dev);
1147ea233199SJohn Baldwin     if (device_get_children(dev, &children, &child_count) != 0)
1148ea233199SJohn Baldwin 	return;
1149ea233199SJohn Baldwin     for (i = 0; i < child_count; i++) {
1150ea233199SJohn Baldwin 	ad = device_get_ivars(children[i]);
1151ea233199SJohn Baldwin 	rl = &ad->ad_rl;
1152ea233199SJohn Baldwin 
1153ea233199SJohn Baldwin 	/* Don't reserve system resources. */
1154ea233199SJohn Baldwin 	if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1155ea233199SJohn Baldwin 	    continue;
1156ea233199SJohn Baldwin 
1157ea233199SJohn Baldwin 	STAILQ_FOREACH(rle, rl, link) {
1158ea233199SJohn Baldwin 	    /*
1159ea233199SJohn Baldwin 	     * Don't reserve IRQ resources.  There are many sticky things
1160ea233199SJohn Baldwin 	     * to get right otherwise (e.g. IRQs for psm, atkbd, and HPET
1161ea233199SJohn Baldwin 	     * when using legacy routing).
1162ea233199SJohn Baldwin 	     */
1163ea233199SJohn Baldwin 	    if (rle->type == SYS_RES_IRQ)
1164ea233199SJohn Baldwin 		continue;
1165ea233199SJohn Baldwin 
1166ea233199SJohn Baldwin 	    /*
11670d81cf12SJohn Baldwin 	     * Don't reserve the resource if it is already allocated.
11680d81cf12SJohn Baldwin 	     * The acpi_ec(4) driver can allocate its resources early
11690d81cf12SJohn Baldwin 	     * if ECDT is present.
11700d81cf12SJohn Baldwin 	     */
11710d81cf12SJohn Baldwin 	    if (rle->res != NULL)
11720d81cf12SJohn Baldwin 		continue;
11730d81cf12SJohn Baldwin 
11740d81cf12SJohn Baldwin 	    /*
1175ea233199SJohn Baldwin 	     * Try to reserve the resource from our parent.  If this
1176ea233199SJohn Baldwin 	     * fails because the resource is a system resource, just
1177ea233199SJohn Baldwin 	     * let it be.  The resource range is already reserved so
1178ea233199SJohn Baldwin 	     * that other devices will not use it.  If the driver
1179ea233199SJohn Baldwin 	     * needs to allocate the resource, then
1180ea233199SJohn Baldwin 	     * acpi_alloc_resource() will sub-alloc from the system
1181ea233199SJohn Baldwin 	     * resource.
1182ea233199SJohn Baldwin 	     */
1183ea233199SJohn Baldwin 	    resource_list_reserve(rl, dev, children[i], rle->type, &rle->rid,
1184ea233199SJohn Baldwin 		rle->start, rle->end, rle->count, 0);
1185ea233199SJohn Baldwin 	}
1186ea233199SJohn Baldwin     }
1187ea233199SJohn Baldwin     free(children, M_TEMP);
1188ea233199SJohn Baldwin     sc->acpi_resources_reserved = 1;
1189ea233199SJohn Baldwin }
1190ea233199SJohn Baldwin 
1191ea233199SJohn Baldwin static int
1192ea233199SJohn Baldwin acpi_set_resource(device_t dev, device_t child, int type, int rid,
1193ea233199SJohn Baldwin     u_long start, u_long count)
1194ea233199SJohn Baldwin {
1195ea233199SJohn Baldwin     struct acpi_softc *sc = device_get_softc(dev);
1196ea233199SJohn Baldwin     struct acpi_device *ad = device_get_ivars(child);
1197ea233199SJohn Baldwin     struct resource_list *rl = &ad->ad_rl;
11987e3343bfSJohn Baldwin     ACPI_DEVICE_INFO *devinfo;
1199ea233199SJohn Baldwin     u_long end;
1200ea233199SJohn Baldwin 
1201ea233199SJohn Baldwin     /* Ignore IRQ resources for PCI link devices. */
1202ea233199SJohn Baldwin     if (type == SYS_RES_IRQ && ACPI_ID_PROBE(dev, child, pcilink_ids) != NULL)
1203ea233199SJohn Baldwin 	return (0);
1204ea233199SJohn Baldwin 
12057e3343bfSJohn Baldwin     /*
1206d2dc06caSJohn Baldwin      * Ignore most resources for PCI root bridges.  Some BIOSes
12077e3343bfSJohn Baldwin      * incorrectly enumerate the memory ranges they decode as plain
1208d2dc06caSJohn Baldwin      * memory resources instead of as ResourceProducer ranges.  Other
1209d2dc06caSJohn Baldwin      * BIOSes incorrectly list system resource entries for I/O ranges
1210d2dc06caSJohn Baldwin      * under the PCI bridge.  Do allow the one known-correct case on
1211d2dc06caSJohn Baldwin      * x86 of a PCI bridge claiming the I/O ports used for PCI config
1212d2dc06caSJohn Baldwin      * access.
12137e3343bfSJohn Baldwin      */
1214d2dc06caSJohn Baldwin     if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) {
12157e3343bfSJohn Baldwin 	if (ACPI_SUCCESS(AcpiGetObjectInfo(ad->ad_handle, &devinfo))) {
12167e3343bfSJohn Baldwin 	    if ((devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0) {
1217d2dc06caSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
1218d2dc06caSJohn Baldwin 		if (!(type == SYS_RES_IOPORT && start == CONF1_ADDR_PORT))
1219d2dc06caSJohn Baldwin #endif
1220d2dc06caSJohn Baldwin 		{
12217e3343bfSJohn Baldwin 		    AcpiOsFree(devinfo);
12227e3343bfSJohn Baldwin 		    return (0);
12237e3343bfSJohn Baldwin 		}
1224d2dc06caSJohn Baldwin 	    }
12257e3343bfSJohn Baldwin 	    AcpiOsFree(devinfo);
12267e3343bfSJohn Baldwin 	}
12277e3343bfSJohn Baldwin     }
12287e3343bfSJohn Baldwin 
1229ea233199SJohn Baldwin     /* If the resource is already allocated, fail. */
1230ea233199SJohn Baldwin     if (resource_list_busy(rl, type, rid))
1231ea233199SJohn Baldwin 	return (EBUSY);
1232ea233199SJohn Baldwin 
1233ea233199SJohn Baldwin     /* If the resource is already reserved, release it. */
1234ea233199SJohn Baldwin     if (resource_list_reserved(rl, type, rid))
1235ea233199SJohn Baldwin 	resource_list_unreserve(rl, dev, child, type, rid);
1236ea233199SJohn Baldwin 
1237ea233199SJohn Baldwin     /* Add the resource. */
1238ea233199SJohn Baldwin     end = (start + count - 1);
1239ea233199SJohn Baldwin     resource_list_add(rl, type, rid, start, end, count);
1240ea233199SJohn Baldwin 
1241ea233199SJohn Baldwin     /* Don't reserve resources until the system resources are allocated. */
1242ea233199SJohn Baldwin     if (!sc->acpi_resources_reserved)
1243ea233199SJohn Baldwin 	return (0);
1244ea233199SJohn Baldwin 
1245ea233199SJohn Baldwin     /* Don't reserve system resources. */
1246ea233199SJohn Baldwin     if (ACPI_ID_PROBE(dev, child, sysres_ids) != NULL)
1247ea233199SJohn Baldwin 	return (0);
1248ea233199SJohn Baldwin 
1249ea233199SJohn Baldwin     /*
1250ea233199SJohn Baldwin      * Don't reserve IRQ resources.  There are many sticky things to
1251ea233199SJohn Baldwin      * get right otherwise (e.g. IRQs for psm, atkbd, and HPET when
1252ea233199SJohn Baldwin      * using legacy routing).
1253ea233199SJohn Baldwin      */
1254ea233199SJohn Baldwin     if (type == SYS_RES_IRQ)
1255ea233199SJohn Baldwin 	return (0);
1256ea233199SJohn Baldwin 
1257ea233199SJohn Baldwin     /*
1258ea233199SJohn Baldwin      * Reserve the resource.
1259ea233199SJohn Baldwin      *
1260ea233199SJohn Baldwin      * XXX: Ignores failure for now.  Failure here is probably a
1261ea233199SJohn Baldwin      * BIOS/firmware bug?
1262ea233199SJohn Baldwin      */
1263ea233199SJohn Baldwin     resource_list_reserve(rl, dev, child, type, &rid, start, end, count, 0);
1264ea233199SJohn Baldwin     return (0);
1265ea233199SJohn Baldwin }
1266ea233199SJohn Baldwin 
126715e32d5dSMike Smith static struct resource *
126815e32d5dSMike Smith acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
126915e32d5dSMike Smith     u_long start, u_long end, u_long count, u_int flags)
127015e32d5dSMike Smith {
127195957f62SJohn Baldwin     ACPI_RESOURCE ares;
1272ea233199SJohn Baldwin     struct acpi_device *ad;
127391233413SNate Lawson     struct resource_list_entry *rle;
1274ea233199SJohn Baldwin     struct resource_list *rl;
127591233413SNate Lawson     struct resource *res;
1276ea233199SJohn Baldwin     int isdefault = (start == 0UL && end == ~0UL);
127715e2f34fSNate Lawson 
127891233413SNate Lawson     /*
1279ea233199SJohn Baldwin      * First attempt at allocating the resource.  For direct children,
1280ea233199SJohn Baldwin      * use resource_list_alloc() to handle reserved resources.  For
1281f6133e71SJohn Baldwin      * other devices, pass the request up to our parent.
128291233413SNate Lawson      */
1283ea233199SJohn Baldwin     if (bus == device_get_parent(child)) {
1284ea233199SJohn Baldwin 	ad = device_get_ivars(child);
1285ea233199SJohn Baldwin 	rl = &ad->ad_rl;
128691233413SNate Lawson 
1287397c30a8SJohn Baldwin 	/*
1288ea233199SJohn Baldwin 	 * Simulate the behavior of the ISA bus for direct children
1289ea233199SJohn Baldwin 	 * devices.  That is, if a non-default range is specified for
1290ea233199SJohn Baldwin 	 * a resource that doesn't exist, use bus_set_resource() to
1291ea233199SJohn Baldwin 	 * add the resource before allocating it.  Note that these
1292ea233199SJohn Baldwin 	 * resources will not be reserved.
1293397c30a8SJohn Baldwin 	 */
1294ea233199SJohn Baldwin 	if (!isdefault && resource_list_find(rl, type, *rid) == NULL)
1295ea233199SJohn Baldwin 		resource_list_add(rl, type, *rid, start, end, count);
1296ea233199SJohn Baldwin 	res = resource_list_alloc(rl, bus, child, type, rid, start, end, count,
1297ea233199SJohn Baldwin 	    flags);
1298ea233199SJohn Baldwin 	if (res != NULL && type == SYS_RES_IRQ) {
129995957f62SJohn Baldwin 	    /*
130095957f62SJohn Baldwin 	     * Since bus_config_intr() takes immediate effect, we cannot
130195957f62SJohn Baldwin 	     * configure the interrupt associated with a device when we
130295957f62SJohn Baldwin 	     * parse the resources but have to defer it until a driver
130395957f62SJohn Baldwin 	     * actually allocates the interrupt via bus_alloc_resource().
130495957f62SJohn Baldwin 	     *
130595957f62SJohn Baldwin 	     * XXX: Should we handle the lookup failing?
130695957f62SJohn Baldwin 	     */
130795957f62SJohn Baldwin 	    if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
130895957f62SJohn Baldwin 		acpi_config_intr(child, &ares);
130995957f62SJohn Baldwin 	}
131015e2f34fSNate Lawson 
1311ea233199SJohn Baldwin 	/*
1312ea233199SJohn Baldwin 	 * If this is an allocation of the "default" range for a given
1313ea233199SJohn Baldwin 	 * RID, fetch the exact bounds for this resource from the
1314ea233199SJohn Baldwin 	 * resource list entry to try to allocate the range from the
1315ea233199SJohn Baldwin 	 * system resource regions.
1316ea233199SJohn Baldwin 	 */
1317ea233199SJohn Baldwin 	if (res == NULL && isdefault) {
1318ea233199SJohn Baldwin 	    rle = resource_list_find(rl, type, *rid);
1319ea233199SJohn Baldwin 	    if (rle != NULL) {
1320ea233199SJohn Baldwin 		start = rle->start;
1321ea233199SJohn Baldwin 		end = rle->end;
1322ea233199SJohn Baldwin 		count = rle->count;
1323ea233199SJohn Baldwin 	    }
1324ea233199SJohn Baldwin 	}
1325ea233199SJohn Baldwin     } else
1326ea233199SJohn Baldwin 	res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1327ea233199SJohn Baldwin 	    start, end, count, flags);
1328ea233199SJohn Baldwin 
1329ea233199SJohn Baldwin     /*
1330ea233199SJohn Baldwin      * If the first attempt failed and this is an allocation of a
1331ea233199SJohn Baldwin      * specific range, try to satisfy the request via a suballocation
13325d0d779bSJohn Baldwin      * from our system resource regions.
1333ea233199SJohn Baldwin      */
13345d0d779bSJohn Baldwin     if (res == NULL && start + count - 1 == end)
13355d0d779bSJohn Baldwin 	res = acpi_alloc_sysres(child, type, rid, start, end, count, flags);
13365d0d779bSJohn Baldwin     return (res);
13375d0d779bSJohn Baldwin }
13385d0d779bSJohn Baldwin 
13395d0d779bSJohn Baldwin /*
13405d0d779bSJohn Baldwin  * Attempt to allocate a specific resource range from the system
13415d0d779bSJohn Baldwin  * resource ranges.  Note that we only handle memory and I/O port
13425d0d779bSJohn Baldwin  * system resources.
13435d0d779bSJohn Baldwin  */
13445d0d779bSJohn Baldwin struct resource *
13455d0d779bSJohn Baldwin acpi_alloc_sysres(device_t child, int type, int *rid, u_long start, u_long end,
13465d0d779bSJohn Baldwin     u_long count, u_int flags)
13475d0d779bSJohn Baldwin {
13485d0d779bSJohn Baldwin     struct rman *rm;
13495d0d779bSJohn Baldwin     struct resource *res;
13505d0d779bSJohn Baldwin 
1351ea233199SJohn Baldwin     switch (type) {
1352ea233199SJohn Baldwin     case SYS_RES_IOPORT:
1353ea233199SJohn Baldwin 	rm = &acpi_rman_io;
1354ea233199SJohn Baldwin 	break;
1355ea233199SJohn Baldwin     case SYS_RES_MEMORY:
1356ea233199SJohn Baldwin 	rm = &acpi_rman_mem;
1357ea233199SJohn Baldwin 	break;
1358ea233199SJohn Baldwin     default:
1359ea233199SJohn Baldwin 	return (NULL);
1360ea233199SJohn Baldwin     }
1361ea233199SJohn Baldwin 
13625d0d779bSJohn Baldwin     KASSERT(start + count - 1 == end, ("wildcard resource range"));
1363ea233199SJohn Baldwin     res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1364ea233199SJohn Baldwin 	child);
1365ea233199SJohn Baldwin     if (res == NULL)
1366ea233199SJohn Baldwin 	return (NULL);
1367ea233199SJohn Baldwin 
1368ea233199SJohn Baldwin     rman_set_rid(res, *rid);
1369ea233199SJohn Baldwin 
1370ea233199SJohn Baldwin     /* If requested, activate the resource using the parent's method. */
1371ea233199SJohn Baldwin     if (flags & RF_ACTIVE)
1372ea233199SJohn Baldwin 	if (bus_activate_resource(child, type, *rid, res) != 0) {
1373ea233199SJohn Baldwin 	    rman_release_resource(res);
1374ea233199SJohn Baldwin 	    return (NULL);
1375ea233199SJohn Baldwin 	}
1376ea233199SJohn Baldwin 
137791233413SNate Lawson     return (res);
137815e32d5dSMike Smith }
137915e32d5dSMike Smith 
138015e32d5dSMike Smith static int
1381049dc0d1SJohn Baldwin acpi_is_resource_managed(int type, struct resource *r)
138215e32d5dSMike Smith {
138315e32d5dSMike Smith 
1384397c30a8SJohn Baldwin     /* We only handle memory and IO resources through rman. */
1385397c30a8SJohn Baldwin     switch (type) {
1386397c30a8SJohn Baldwin     case SYS_RES_IOPORT:
1387049dc0d1SJohn Baldwin 	return (rman_is_region_manager(r, &acpi_rman_io));
1388397c30a8SJohn Baldwin     case SYS_RES_MEMORY:
1389049dc0d1SJohn Baldwin 	return (rman_is_region_manager(r, &acpi_rman_mem));
1390397c30a8SJohn Baldwin     }
1391049dc0d1SJohn Baldwin     return (0);
1392049dc0d1SJohn Baldwin }
1393049dc0d1SJohn Baldwin 
1394049dc0d1SJohn Baldwin static int
1395049dc0d1SJohn Baldwin acpi_adjust_resource(device_t bus, device_t child, int type, struct resource *r,
1396049dc0d1SJohn Baldwin     u_long start, u_long end)
1397049dc0d1SJohn Baldwin {
1398049dc0d1SJohn Baldwin 
1399049dc0d1SJohn Baldwin     if (acpi_is_resource_managed(type, r))
1400049dc0d1SJohn Baldwin 	return (rman_adjust_resource(r, start, end));
1401049dc0d1SJohn Baldwin     return (bus_generic_adjust_resource(bus, child, type, r, start, end));
1402049dc0d1SJohn Baldwin }
1403049dc0d1SJohn Baldwin 
1404049dc0d1SJohn Baldwin static int
1405049dc0d1SJohn Baldwin acpi_release_resource(device_t bus, device_t child, int type, int rid,
1406049dc0d1SJohn Baldwin     struct resource *r)
1407049dc0d1SJohn Baldwin {
1408049dc0d1SJohn Baldwin     int ret;
1409397c30a8SJohn Baldwin 
141091233413SNate Lawson     /*
1411397c30a8SJohn Baldwin      * If this resource belongs to one of our internal managers,
1412ea233199SJohn Baldwin      * deactivate it and release it to the local pool.
141391233413SNate Lawson      */
1414049dc0d1SJohn Baldwin     if (acpi_is_resource_managed(type, r)) {
141591233413SNate Lawson 	if (rman_get_flags(r) & RF_ACTIVE) {
141691233413SNate Lawson 	    ret = bus_deactivate_resource(child, type, rid, r);
141791233413SNate Lawson 	    if (ret != 0)
141891233413SNate Lawson 		return (ret);
141915e32d5dSMike Smith 	}
1420ea233199SJohn Baldwin 	return (rman_release_resource(r));
1421ea233199SJohn Baldwin     }
1422ea233199SJohn Baldwin 
1423ea233199SJohn Baldwin     return (bus_generic_rl_release_resource(bus, child, type, rid, r));
1424ea233199SJohn Baldwin }
142515e32d5dSMike Smith 
14268b28b622SNate Lawson static void
14278b28b622SNate Lawson acpi_delete_resource(device_t bus, device_t child, int type, int rid)
14288b28b622SNate Lawson {
14298b28b622SNate Lawson     struct resource_list *rl;
14308b28b622SNate Lawson 
14318b28b622SNate Lawson     rl = acpi_get_rlist(bus, child);
1432ea233199SJohn Baldwin     if (resource_list_busy(rl, type, rid)) {
1433ea233199SJohn Baldwin 	device_printf(bus, "delete_resource: Resource still owned by child"
1434ea233199SJohn Baldwin 	    " (type=%d, rid=%d)\n", type, rid);
1435ea233199SJohn Baldwin 	return;
1436ea233199SJohn Baldwin     }
1437ea233199SJohn Baldwin     resource_list_unreserve(rl, bus, child, type, rid);
14388b28b622SNate Lawson     resource_list_delete(rl, type, rid);
14398b28b622SNate Lawson }
14408b28b622SNate Lawson 
1441dc750869SNate Lawson /* Allocate an IO port or memory resource, given its GAS. */
1442e1c4bf3fSNate Lawson int
1443e1c4bf3fSNate Lawson acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1444907b6777SNate Lawson     struct resource **res, u_int flags)
1445dc750869SNate Lawson {
1446e1c4bf3fSNate Lawson     int error, res_type;
1447dc750869SNate Lawson 
1448e1c4bf3fSNate Lawson     error = ENOMEM;
14498f118e25SNate Lawson     if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1450e1c4bf3fSNate Lawson 	return (EINVAL);
1451dc750869SNate Lawson 
14528f118e25SNate Lawson     /* We only support memory and IO spaces. */
14532be4e471SJung-uk Kim     switch (gas->SpaceId) {
1454dc750869SNate Lawson     case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1455e1c4bf3fSNate Lawson 	res_type = SYS_RES_MEMORY;
1456dc750869SNate Lawson 	break;
1457dc750869SNate Lawson     case ACPI_ADR_SPACE_SYSTEM_IO:
1458e1c4bf3fSNate Lawson 	res_type = SYS_RES_IOPORT;
1459dc750869SNate Lawson 	break;
1460dc750869SNate Lawson     default:
1461e1c4bf3fSNate Lawson 	return (EOPNOTSUPP);
1462dc750869SNate Lawson     }
1463dc750869SNate Lawson 
14642fe912dfSNate Lawson     /*
1465f45fc848SNate Lawson      * If the register width is less than 8, assume the BIOS author means
1466f45fc848SNate Lawson      * it is a bit field and just allocate a byte.
14672fe912dfSNate Lawson      */
14682be4e471SJung-uk Kim     if (gas->BitWidth && gas->BitWidth < 8)
14692be4e471SJung-uk Kim 	gas->BitWidth = 8;
14702fe912dfSNate Lawson 
14718f118e25SNate Lawson     /* Validate the address after we're sure we support the space. */
14722be4e471SJung-uk Kim     if (gas->Address == 0 || gas->BitWidth == 0)
14738f118e25SNate Lawson 	return (EINVAL);
14748f118e25SNate Lawson 
1475e1c4bf3fSNate Lawson     bus_set_resource(dev, res_type, *rid, gas->Address,
14762be4e471SJung-uk Kim 	gas->BitWidth / 8);
1477907b6777SNate Lawson     *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1478e1c4bf3fSNate Lawson     if (*res != NULL) {
1479e1c4bf3fSNate Lawson 	*type = res_type;
1480e1c4bf3fSNate Lawson 	error = 0;
1481ca2c69c8SNate Lawson     } else
1482ca2c69c8SNate Lawson 	bus_delete_resource(dev, res_type, *rid);
1483ca2c69c8SNate Lawson 
1484e1c4bf3fSNate Lawson     return (error);
1485dc750869SNate Lawson }
1486dc750869SNate Lawson 
1487c796e27bSNate Lawson /* Probe _HID and _CID for compatible ISA PNP ids. */
14881e4925e8SNate Lawson static uint32_t
148932d18aa5SMike Smith acpi_isa_get_logicalid(device_t dev)
1490bc0f2195SMike Smith {
14911e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
1492bc0f2195SMike Smith     ACPI_HANDLE		h;
149392488a57SJung-uk Kim     uint32_t		pnpid;
149432d18aa5SMike Smith 
1495b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
149632d18aa5SMike Smith 
14976fca9360SNate Lawson     /* Fetch and validate the HID. */
149892488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
149992488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
150092488a57SJung-uk Kim 	return_VALUE (0);
150132d18aa5SMike Smith 
150292488a57SJung-uk Kim     pnpid = (devinfo->Valid & ACPI_VALID_HID) != 0 &&
150392488a57SJung-uk Kim 	devinfo->HardwareId.Length >= ACPI_EISAID_STRING_SIZE ?
150492488a57SJung-uk Kim 	PNP_EISAID(devinfo->HardwareId.String) : 0;
150592488a57SJung-uk Kim     AcpiOsFree(devinfo);
1506be2b1797SNate Lawson 
150732d18aa5SMike Smith     return_VALUE (pnpid);
150832d18aa5SMike Smith }
150932d18aa5SMike Smith 
15101e4925e8SNate Lawson static int
15111e4925e8SNate Lawson acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1512b2566207STakanori Watanabe {
15131e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
15148ef1a331SJung-uk Kim     ACPI_PNP_DEVICE_ID	*ids;
1515b2566207STakanori Watanabe     ACPI_HANDLE		h;
15161e4925e8SNate Lawson     uint32_t		*pnpid;
151792488a57SJung-uk Kim     int			i, valid;
1518b2566207STakanori Watanabe 
1519b2566207STakanori Watanabe     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1520b2566207STakanori Watanabe 
15211e4925e8SNate Lawson     pnpid = cids;
1522bd189fe7SNate Lawson 
15231e4925e8SNate Lawson     /* Fetch and validate the CID */
152492488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
152592488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
152692488a57SJung-uk Kim 	return_VALUE (0);
1527b2566207STakanori Watanabe 
152892488a57SJung-uk Kim     if ((devinfo->Valid & ACPI_VALID_CID) == 0) {
152992488a57SJung-uk Kim 	AcpiOsFree(devinfo);
153092488a57SJung-uk Kim 	return_VALUE (0);
1531b2566207STakanori Watanabe     }
1532b2566207STakanori Watanabe 
153392488a57SJung-uk Kim     if (devinfo->CompatibleIdList.Count < count)
153492488a57SJung-uk Kim 	count = devinfo->CompatibleIdList.Count;
153592488a57SJung-uk Kim     ids = devinfo->CompatibleIdList.Ids;
153692488a57SJung-uk Kim     for (i = 0, valid = 0; i < count; i++)
153792488a57SJung-uk Kim 	if (ids[i].Length >= ACPI_EISAID_STRING_SIZE &&
153892488a57SJung-uk Kim 	    strncmp(ids[i].String, "PNP", 3) == 0) {
153992488a57SJung-uk Kim 	    *pnpid++ = PNP_EISAID(ids[i].String);
154092488a57SJung-uk Kim 	    valid++;
154192488a57SJung-uk Kim 	}
154292488a57SJung-uk Kim     AcpiOsFree(devinfo);
154392488a57SJung-uk Kim 
15441e4925e8SNate Lawson     return_VALUE (valid);
15451e4925e8SNate Lawson }
1546b2566207STakanori Watanabe 
1547ce619b2eSNate Lawson static char *
1548ce619b2eSNate Lawson acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1549ce619b2eSNate Lawson {
1550ce619b2eSNate Lawson     ACPI_HANDLE h;
155192488a57SJung-uk Kim     ACPI_OBJECT_TYPE t;
1552ce619b2eSNate Lawson     int i;
1553ce619b2eSNate Lawson 
1554ce619b2eSNate Lawson     h = acpi_get_handle(dev);
155592488a57SJung-uk Kim     if (ids == NULL || h == NULL)
155692488a57SJung-uk Kim 	return (NULL);
155792488a57SJung-uk Kim     t = acpi_get_type(dev);
155892488a57SJung-uk Kim     if (t != ACPI_TYPE_DEVICE && t != ACPI_TYPE_PROCESSOR)
1559ce619b2eSNate Lawson 	return (NULL);
1560ce619b2eSNate Lawson 
1561ce619b2eSNate Lawson     /* Try to match one of the array of IDs with a HID or CID. */
1562ce619b2eSNate Lawson     for (i = 0; ids[i] != NULL; i++) {
1563ce619b2eSNate Lawson 	if (acpi_MatchHid(h, ids[i]))
1564ce619b2eSNate Lawson 	    return (ids[i]);
1565ce619b2eSNate Lawson     }
1566ce619b2eSNate Lawson     return (NULL);
1567ce619b2eSNate Lawson }
1568ce619b2eSNate Lawson 
1569ce619b2eSNate Lawson static ACPI_STATUS
1570ce619b2eSNate Lawson acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1571ce619b2eSNate Lawson     ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1572ce619b2eSNate Lawson {
1573ce619b2eSNate Lawson     ACPI_HANDLE h;
1574ce619b2eSNate Lawson 
1575df8d2a32SNate Lawson     if (dev == NULL)
1576df8d2a32SNate Lawson 	h = ACPI_ROOT_OBJECT;
1577df8d2a32SNate Lawson     else if ((h = acpi_get_handle(dev)) == NULL)
1578ce619b2eSNate Lawson 	return (AE_BAD_PARAMETER);
1579ce619b2eSNate Lawson     return (AcpiEvaluateObject(h, pathname, parameters, ret));
1580ce619b2eSNate Lawson }
1581ce619b2eSNate Lawson 
158262508c53SJohn Baldwin int
158310ce62b9SNate Lawson acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
158410ce62b9SNate Lawson {
158510ce62b9SNate Lawson     struct acpi_softc *sc;
158610ce62b9SNate Lawson     ACPI_HANDLE handle;
158710ce62b9SNate Lawson     ACPI_STATUS status;
158810ce62b9SNate Lawson     char sxd[8];
158910ce62b9SNate Lawson 
159010ce62b9SNate Lawson     handle = acpi_get_handle(dev);
159110ce62b9SNate Lawson 
159210ce62b9SNate Lawson     /*
159310ce62b9SNate Lawson      * XXX If we find these devices, don't try to power them down.
159410ce62b9SNate Lawson      * The serial and IRDA ports on my T23 hang the system when
159510ce62b9SNate Lawson      * set to D3 and it appears that such legacy devices may
159610ce62b9SNate Lawson      * need special handling in their drivers.
159710ce62b9SNate Lawson      */
1598a7a3177fSJung-uk Kim     if (dstate == NULL || handle == NULL ||
159910ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0500") ||
160010ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0501") ||
160110ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0502") ||
160210ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0510") ||
160310ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0511"))
160410ce62b9SNate Lawson 	return (ENXIO);
160510ce62b9SNate Lawson 
160610ce62b9SNate Lawson     /*
1607a7a3177fSJung-uk Kim      * Override next state with the value from _SxD, if present.
1608a7a3177fSJung-uk Kim      * Note illegal _S0D is evaluated because some systems expect this.
160910ce62b9SNate Lawson      */
1610a7a3177fSJung-uk Kim     sc = device_get_softc(bus);
161110ce62b9SNate Lawson     snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
161210ce62b9SNate Lawson     status = acpi_GetInteger(handle, sxd, dstate);
1613a7a3177fSJung-uk Kim     if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
1614a7a3177fSJung-uk Kim 	    device_printf(dev, "failed to get %s on %s: %s\n", sxd,
1615a7a3177fSJung-uk Kim 		acpi_name(handle), AcpiFormatException(status));
1616a7a3177fSJung-uk Kim 	    return (ENXIO);
161710ce62b9SNate Lawson     }
161810ce62b9SNate Lawson 
1619a7a3177fSJung-uk Kim     return (0);
162010ce62b9SNate Lawson }
162110ce62b9SNate Lawson 
1622df8d2a32SNate Lawson /* Callback arg for our implementation of walking the namespace. */
1623df8d2a32SNate Lawson struct acpi_device_scan_ctx {
1624df8d2a32SNate Lawson     acpi_scan_cb_t	user_fn;
1625df8d2a32SNate Lawson     void		*arg;
1626df8d2a32SNate Lawson     ACPI_HANDLE		parent;
1627df8d2a32SNate Lawson };
1628df8d2a32SNate Lawson 
1629ce619b2eSNate Lawson static ACPI_STATUS
1630df8d2a32SNate Lawson acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1631df8d2a32SNate Lawson {
1632df8d2a32SNate Lawson     struct acpi_device_scan_ctx *ctx;
1633df8d2a32SNate Lawson     device_t dev, old_dev;
1634df8d2a32SNate Lawson     ACPI_STATUS status;
1635df8d2a32SNate Lawson     ACPI_OBJECT_TYPE type;
1636df8d2a32SNate Lawson 
1637df8d2a32SNate Lawson     /*
1638df8d2a32SNate Lawson      * Skip this device if we think we'll have trouble with it or it is
1639df8d2a32SNate Lawson      * the parent where the scan began.
1640df8d2a32SNate Lawson      */
1641df8d2a32SNate Lawson     ctx = (struct acpi_device_scan_ctx *)arg;
1642df8d2a32SNate Lawson     if (acpi_avoid(h) || h == ctx->parent)
1643df8d2a32SNate Lawson 	return (AE_OK);
1644df8d2a32SNate Lawson 
1645df8d2a32SNate Lawson     /* If this is not a valid device type (e.g., a method), skip it. */
1646df8d2a32SNate Lawson     if (ACPI_FAILURE(AcpiGetType(h, &type)))
1647df8d2a32SNate Lawson 	return (AE_OK);
1648df8d2a32SNate Lawson     if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1649df8d2a32SNate Lawson 	type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1650df8d2a32SNate Lawson 	return (AE_OK);
1651df8d2a32SNate Lawson 
1652df8d2a32SNate Lawson     /*
1653df8d2a32SNate Lawson      * Call the user function with the current device.  If it is unchanged
1654df8d2a32SNate Lawson      * afterwards, return.  Otherwise, we update the handle to the new dev.
1655df8d2a32SNate Lawson      */
1656df8d2a32SNate Lawson     old_dev = acpi_get_device(h);
1657df8d2a32SNate Lawson     dev = old_dev;
1658df8d2a32SNate Lawson     status = ctx->user_fn(h, &dev, level, ctx->arg);
1659df8d2a32SNate Lawson     if (ACPI_FAILURE(status) || old_dev == dev)
1660df8d2a32SNate Lawson 	return (status);
1661df8d2a32SNate Lawson 
1662df8d2a32SNate Lawson     /* Remove the old child and its connection to the handle. */
1663df8d2a32SNate Lawson     if (old_dev != NULL) {
1664df8d2a32SNate Lawson 	device_delete_child(device_get_parent(old_dev), old_dev);
1665df8d2a32SNate Lawson 	AcpiDetachData(h, acpi_fake_objhandler);
1666df8d2a32SNate Lawson     }
1667df8d2a32SNate Lawson 
1668df8d2a32SNate Lawson     /* Recreate the handle association if the user created a device. */
1669df8d2a32SNate Lawson     if (dev != NULL)
1670df8d2a32SNate Lawson 	AcpiAttachData(h, acpi_fake_objhandler, dev);
1671df8d2a32SNate Lawson 
1672df8d2a32SNate Lawson     return (AE_OK);
1673df8d2a32SNate Lawson }
1674df8d2a32SNate Lawson 
1675df8d2a32SNate Lawson static ACPI_STATUS
1676df8d2a32SNate Lawson acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1677df8d2a32SNate Lawson     acpi_scan_cb_t user_fn, void *arg)
1678ce619b2eSNate Lawson {
1679ce619b2eSNate Lawson     ACPI_HANDLE h;
1680df8d2a32SNate Lawson     struct acpi_device_scan_ctx ctx;
1681ce619b2eSNate Lawson 
1682df8d2a32SNate Lawson     if (acpi_disabled("children"))
1683df8d2a32SNate Lawson 	return (AE_OK);
1684df8d2a32SNate Lawson 
1685df8d2a32SNate Lawson     if (dev == NULL)
1686df8d2a32SNate Lawson 	h = ACPI_ROOT_OBJECT;
1687df8d2a32SNate Lawson     else if ((h = acpi_get_handle(dev)) == NULL)
1688ce619b2eSNate Lawson 	return (AE_BAD_PARAMETER);
1689df8d2a32SNate Lawson     ctx.user_fn = user_fn;
1690df8d2a32SNate Lawson     ctx.arg = arg;
1691df8d2a32SNate Lawson     ctx.parent = h;
1692df8d2a32SNate Lawson     return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
16932272d050SJung-uk Kim 	acpi_device_scan_cb, NULL, &ctx, NULL));
1694ce619b2eSNate Lawson }
1695ce619b2eSNate Lawson 
169610ce62b9SNate Lawson /*
169710ce62b9SNate Lawson  * Even though ACPI devices are not PCI, we use the PCI approach for setting
169810ce62b9SNate Lawson  * device power states since it's close enough to ACPI.
169910ce62b9SNate Lawson  */
170010ce62b9SNate Lawson static int
1701a7a3177fSJung-uk Kim acpi_set_powerstate(device_t child, int state)
170210ce62b9SNate Lawson {
170310ce62b9SNate Lawson     ACPI_HANDLE h;
170410ce62b9SNate Lawson     ACPI_STATUS status;
170510ce62b9SNate Lawson 
170610ce62b9SNate Lawson     h = acpi_get_handle(child);
1707a0e73a12SJung-uk Kim     if (state < ACPI_STATE_D0 || state > ACPI_D_STATES_MAX)
170810ce62b9SNate Lawson 	return (EINVAL);
170910ce62b9SNate Lawson     if (h == NULL)
171010ce62b9SNate Lawson 	return (0);
171110ce62b9SNate Lawson 
171210ce62b9SNate Lawson     /* Ignore errors if the power methods aren't present. */
171310ce62b9SNate Lawson     status = acpi_pwr_switch_consumer(h, state);
1714a7a3177fSJung-uk Kim     if (ACPI_SUCCESS(status)) {
1715a7a3177fSJung-uk Kim 	if (bootverbose)
1716a7a3177fSJung-uk Kim 	    device_printf(child, "set ACPI power state D%d on %s\n",
1717a7a3177fSJung-uk Kim 		state, acpi_name(h));
1718a7a3177fSJung-uk Kim     } else if (status != AE_NOT_FOUND)
1719a7a3177fSJung-uk Kim 	device_printf(child,
1720a7a3177fSJung-uk Kim 	    "failed to set ACPI power state D%d on %s: %s\n", state,
1721a7a3177fSJung-uk Kim 	    acpi_name(h), AcpiFormatException(status));
172210ce62b9SNate Lawson 
1723a7a3177fSJung-uk Kim     return (0);
172410ce62b9SNate Lawson }
172510ce62b9SNate Lawson 
172632d18aa5SMike Smith static int
172732d18aa5SMike Smith acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
172832d18aa5SMike Smith {
17291e4925e8SNate Lawson     int			result, cid_count, i;
17301e4925e8SNate Lawson     uint32_t		lid, cids[8];
1731bc0f2195SMike Smith 
1732b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1733bc0f2195SMike Smith 
1734bc0f2195SMike Smith     /*
1735bc0f2195SMike Smith      * ISA-style drivers attached to ACPI may persist and
1736bc0f2195SMike Smith      * probe manually if we return ENOENT.  We never want
1737bc0f2195SMike Smith      * that to happen, so don't ever return it.
1738bc0f2195SMike Smith      */
1739bc0f2195SMike Smith     result = ENXIO;
1740bc0f2195SMike Smith 
1741be2b1797SNate Lawson     /* Scan the supplied IDs for a match */
1742b2566207STakanori Watanabe     lid = acpi_isa_get_logicalid(child);
17431e4925e8SNate Lawson     cid_count = acpi_isa_get_compatid(child, cids, 8);
1744bc0f2195SMike Smith     while (ids && ids->ip_id) {
17451e4925e8SNate Lawson 	if (lid == ids->ip_id) {
1746bc0f2195SMike Smith 	    result = 0;
1747bc0f2195SMike Smith 	    goto out;
1748bc0f2195SMike Smith 	}
17491e4925e8SNate Lawson 	for (i = 0; i < cid_count; i++) {
17501e4925e8SNate Lawson 	    if (cids[i] == ids->ip_id) {
17511e4925e8SNate Lawson 		result = 0;
17521e4925e8SNate Lawson 		goto out;
17531e4925e8SNate Lawson 	    }
17541e4925e8SNate Lawson 	}
1755bc0f2195SMike Smith 	ids++;
1756bc0f2195SMike Smith     }
1757be2b1797SNate Lawson 
1758bc0f2195SMike Smith  out:
17599e0dd54fSNate Lawson     if (result == 0 && ids->ip_desc)
17609e0dd54fSNate Lawson 	device_set_desc(child, ids->ip_desc);
17619e0dd54fSNate Lawson 
1762bc0f2195SMike Smith     return_VALUE (result);
1763bc0f2195SMike Smith }
1764bc0f2195SMike Smith 
1765d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
1766d320e05cSJohn Baldwin /*
1767d320e05cSJohn Baldwin  * Look for a MCFG table.  If it is present, use the settings for
1768d320e05cSJohn Baldwin  * domain (segment) 0 to setup PCI config space access via the memory
1769d320e05cSJohn Baldwin  * map.
1770d320e05cSJohn Baldwin  */
1771d320e05cSJohn Baldwin static void
1772d320e05cSJohn Baldwin acpi_enable_pcie(void)
1773d320e05cSJohn Baldwin {
1774d320e05cSJohn Baldwin 	ACPI_TABLE_HEADER *hdr;
1775d320e05cSJohn Baldwin 	ACPI_MCFG_ALLOCATION *alloc, *end;
1776d320e05cSJohn Baldwin 	ACPI_STATUS status;
1777d320e05cSJohn Baldwin 
1778d320e05cSJohn Baldwin 	status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1779d320e05cSJohn Baldwin 	if (ACPI_FAILURE(status))
1780d320e05cSJohn Baldwin 		return;
1781d320e05cSJohn Baldwin 
1782d320e05cSJohn Baldwin 	end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1783d320e05cSJohn Baldwin 	alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1784d320e05cSJohn Baldwin 	while (alloc < end) {
1785d320e05cSJohn Baldwin 		if (alloc->PciSegment == 0) {
1786d320e05cSJohn Baldwin 			pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1787d320e05cSJohn Baldwin 			    alloc->EndBusNumber);
1788d320e05cSJohn Baldwin 			return;
1789d320e05cSJohn Baldwin 		}
1790d320e05cSJohn Baldwin 		alloc++;
1791d320e05cSJohn Baldwin 	}
1792d320e05cSJohn Baldwin }
1793d320e05cSJohn Baldwin #endif
1794d320e05cSJohn Baldwin 
1795bc0f2195SMike Smith /*
179633332dc2SNate Lawson  * Scan all of the ACPI namespace and attach child devices.
179715e32d5dSMike Smith  *
179833332dc2SNate Lawson  * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
179933332dc2SNate Lawson  * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
180033332dc2SNate Lawson  * However, in violation of the spec, some systems place their PCI link
180133332dc2SNate Lawson  * devices in \, so we have to walk the whole namespace.  We check the
180233332dc2SNate Lawson  * type of namespace nodes, so this should be ok.
180315e32d5dSMike Smith  */
180415e32d5dSMike Smith static void
180515e32d5dSMike Smith acpi_probe_children(device_t bus)
180615e32d5dSMike Smith {
180715e32d5dSMike Smith 
1808b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
18090ae55423SMike Smith 
181015e32d5dSMike Smith     /*
181115e32d5dSMike Smith      * Scan the namespace and insert placeholders for all the devices that
1812edc13633SNate Lawson      * we find.  We also probe/attach any early devices.
181315e32d5dSMike Smith      *
181415e32d5dSMike Smith      * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1815be2b1797SNate Lawson      * we want to create nodes for all devices, not just those that are
1816be2b1797SNate Lawson      * currently present. (This assumes that we don't want to create/remove
1817be2b1797SNate Lawson      * devices as they appear, which might be smarter.)
181815e32d5dSMike Smith      */
18194c1cdee6SMike Smith     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
182033332dc2SNate Lawson     AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child,
18212272d050SJung-uk Kim 	NULL, bus, NULL);
182215e32d5dSMike Smith 
1823adad4744SNate Lawson     /* Pre-allocate resources for our rman from any sysresource devices. */
1824adad4744SNate Lawson     acpi_sysres_alloc(bus);
1825adad4744SNate Lawson 
1826ea233199SJohn Baldwin     /* Reserve resources already allocated to children. */
1827ea233199SJohn Baldwin     acpi_reserve_resources(bus);
1828ea233199SJohn Baldwin 
1829edc13633SNate Lawson     /* Create any static children by calling device identify methods. */
1830edc13633SNate Lawson     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1831edc13633SNate Lawson     bus_generic_probe(bus);
1832edc13633SNate Lawson 
18335e66b8e2SJohn Baldwin     /* Probe/attach all children, created statically and from the namespace. */
18340430ba9eSAndriy Gapon     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "acpi bus_generic_attach\n"));
183515e32d5dSMike Smith     bus_generic_attach(bus);
18360ae55423SMike Smith 
183788a79fc0SNate Lawson     /* Attach wake sysctls. */
18385c9ea25eSNate Lawson     acpi_wake_sysctl_walk(bus);
183988a79fc0SNate Lawson 
1840bc0f2195SMike Smith     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
18410ae55423SMike Smith     return_VOID;
184215e32d5dSMike Smith }
184315e32d5dSMike Smith 
1844b82ca9a9SNate Lawson /*
1845d227204dSJohn Baldwin  * Determine the probe order for a given device.
1846b82ca9a9SNate Lawson  */
1847d227204dSJohn Baldwin static void
1848b82ca9a9SNate Lawson acpi_probe_order(ACPI_HANDLE handle, int *order)
184991233413SNate Lawson {
1850463e0f91SJohn Baldwin 	ACPI_OBJECT_TYPE type;
185191233413SNate Lawson 
1852b82ca9a9SNate Lawson 	/*
1853404b0d10SJung-uk Kim 	 * 0. CPUs
1854404b0d10SJung-uk Kim 	 * 1. I/O port and memory system resource holders
1855404b0d10SJung-uk Kim 	 * 2. Clocks and timers (to handle early accesses)
1856b1f9b996SAndriy Gapon 	 * 3. Embedded controllers (to handle early accesses)
1857b1f9b996SAndriy Gapon 	 * 4. PCI Link Devices
1858b82ca9a9SNate Lawson 	 */
1859463e0f91SJohn Baldwin 	AcpiGetType(handle, &type);
1860aa835160SAndriy Gapon 	if (type == ACPI_TYPE_PROCESSOR)
1861404b0d10SJung-uk Kim 		*order = 0;
1862404b0d10SJung-uk Kim 	else if (acpi_MatchHid(handle, "PNP0C01") ||
1863404b0d10SJung-uk Kim 	    acpi_MatchHid(handle, "PNP0C02"))
186491233413SNate Lawson 		*order = 1;
1865404b0d10SJung-uk Kim 	else if (acpi_MatchHid(handle, "PNP0100") ||
1866404b0d10SJung-uk Kim 	    acpi_MatchHid(handle, "PNP0103") ||
1867404b0d10SJung-uk Kim 	    acpi_MatchHid(handle, "PNP0B00"))
186891233413SNate Lawson 		*order = 2;
1869aa835160SAndriy Gapon 	else if (acpi_MatchHid(handle, "PNP0C09"))
1870b460c6f8SJohn Baldwin 		*order = 3;
1871aa835160SAndriy Gapon 	else if (acpi_MatchHid(handle, "PNP0C0F"))
1872aa835160SAndriy Gapon 		*order = 4;
187391233413SNate Lawson }
187491233413SNate Lawson 
187515e32d5dSMike Smith /*
187615e32d5dSMike Smith  * Evaluate a child device and determine whether we might attach a device to
187715e32d5dSMike Smith  * it.
187815e32d5dSMike Smith  */
187915e32d5dSMike Smith static ACPI_STATUS
188015e32d5dSMike Smith acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
188115e32d5dSMike Smith {
18825a77b11bSJung-uk Kim     struct acpi_prw_data prw;
188315e32d5dSMike Smith     ACPI_OBJECT_TYPE type;
1884858a52f4SMitsuru IWASAKI     ACPI_HANDLE h;
188533332dc2SNate Lawson     device_t bus, child;
1886495a4144SJung-uk Kim     char *handle_str;
1887e4cd9dcfSJohn Baldwin     int order;
188815e32d5dSMike Smith 
1889b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
18900ae55423SMike Smith 
1891495a4144SJung-uk Kim     if (acpi_disabled("children"))
1892495a4144SJung-uk Kim 	return_ACPI_STATUS (AE_OK);
1893495a4144SJung-uk Kim 
1894be2b1797SNate Lawson     /* Skip this device if we think we'll have trouble with it. */
18950ae55423SMike Smith     if (acpi_avoid(handle))
18960ae55423SMike Smith 	return_ACPI_STATUS (AE_OK);
18970ae55423SMike Smith 
189891233413SNate Lawson     bus = (device_t)context;
1899b53f2771SMike Smith     if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1900495a4144SJung-uk Kim 	handle_str = acpi_name(handle);
190115e32d5dSMike Smith 	switch (type) {
190215e32d5dSMike Smith 	case ACPI_TYPE_DEVICE:
1903495a4144SJung-uk Kim 	    /*
1904495a4144SJung-uk Kim 	     * Since we scan from \, be sure to skip system scope objects.
1905495a4144SJung-uk Kim 	     * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
1906affa1826SJung-uk Kim 	     * BIOS bugs.  For example, \_SB_ is to allow \_SB_._INI to be run
1907495a4144SJung-uk Kim 	     * during the intialization and \_TZ_ is to support Notify() on it.
1908495a4144SJung-uk Kim 	     */
1909495a4144SJung-uk Kim 	    if (strcmp(handle_str, "\\_SB_") == 0 ||
1910495a4144SJung-uk Kim 		strcmp(handle_str, "\\_TZ_") == 0)
1911495a4144SJung-uk Kim 		break;
19125a77b11bSJung-uk Kim 	    if (acpi_parse_prw(handle, &prw) == 0)
19135a77b11bSJung-uk Kim 		AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
1914183c8af3SJohn Baldwin 
1915183c8af3SJohn Baldwin 	    /*
1916183c8af3SJohn Baldwin 	     * Ignore devices that do not have a _HID or _CID.  They should
1917183c8af3SJohn Baldwin 	     * be discovered by other buses (e.g. the PCI bus driver).
1918183c8af3SJohn Baldwin 	     */
1919183c8af3SJohn Baldwin 	    if (!acpi_has_hid(handle))
1920183c8af3SJohn Baldwin 		break;
1921495a4144SJung-uk Kim 	    /* FALLTHROUGH */
192215e32d5dSMike Smith 	case ACPI_TYPE_PROCESSOR:
192315e32d5dSMike Smith 	case ACPI_TYPE_THERMAL:
192415e32d5dSMike Smith 	case ACPI_TYPE_POWER:
192533332dc2SNate Lawson 	    /*
1926463e0f91SJohn Baldwin 	     * Create a placeholder device for this node.  Sort the
1927463e0f91SJohn Baldwin 	     * placeholder so that the probe/attach passes will run
1928463e0f91SJohn Baldwin 	     * breadth-first.  Orders less than ACPI_DEV_BASE_ORDER
1929463e0f91SJohn Baldwin 	     * are reserved for special objects (i.e., system
1930b1f9b996SAndriy Gapon 	     * resources).
193115e32d5dSMike Smith 	     */
193233332dc2SNate Lawson 	    ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1933404b0d10SJung-uk Kim 	    order = level * 10 + ACPI_DEV_BASE_ORDER;
1934da72d149SNate Lawson 	    acpi_probe_order(handle, &order);
1935e4cd9dcfSJohn Baldwin 	    child = BUS_ADD_CHILD(bus, order, NULL, -1);
1936bc0f2195SMike Smith 	    if (child == NULL)
1937bc0f2195SMike Smith 		break;
193859a890e6SNate Lawson 
193959a890e6SNate Lawson 	    /* Associate the handle with the device_t and vice versa. */
194015e32d5dSMike Smith 	    acpi_set_handle(child, handle);
194159a890e6SNate Lawson 	    AcpiAttachData(handle, acpi_fake_objhandler, child);
1942bc0f2195SMike Smith 
1943bc0f2195SMike Smith 	    /*
1944b519f9d6SMike Smith 	     * Check that the device is present.  If it's not present,
1945b519f9d6SMike Smith 	     * leave it disabled (so that we have a device_t attached to
1946b519f9d6SMike Smith 	     * the handle, but we don't probe it).
1947893f750aSNate Lawson 	     *
1948893f750aSNate Lawson 	     * XXX PCI link devices sometimes report "present" but not
1949893f750aSNate Lawson 	     * "functional" (i.e. if disabled).  Go ahead and probe them
1950893f750aSNate Lawson 	     * anyway since we may enable them later.
1951b519f9d6SMike Smith 	     */
1952858a52f4SMitsuru IWASAKI 	    if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1953858a52f4SMitsuru IWASAKI 		/* Never disable PCI link devices. */
1954858a52f4SMitsuru IWASAKI 		if (acpi_MatchHid(handle, "PNP0C0F"))
1955858a52f4SMitsuru IWASAKI 		    break;
1956858a52f4SMitsuru IWASAKI 		/*
1957858a52f4SMitsuru IWASAKI 		 * Docking stations should remain enabled since the system
1958858a52f4SMitsuru IWASAKI 		 * may be undocked at boot.
1959858a52f4SMitsuru IWASAKI 		 */
1960858a52f4SMitsuru IWASAKI 		if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
1961858a52f4SMitsuru IWASAKI 		    break;
1962858a52f4SMitsuru IWASAKI 
1963b519f9d6SMike Smith 		device_disable(child);
1964b519f9d6SMike Smith 		break;
1965b519f9d6SMike Smith 	    }
1966b519f9d6SMike Smith 
1967b519f9d6SMike Smith 	    /*
1968bc0f2195SMike Smith 	     * Get the device's resource settings and attach them.
1969bc0f2195SMike Smith 	     * Note that if the device has _PRS but no _CRS, we need
1970bc0f2195SMike Smith 	     * to decide when it's appropriate to try to configure the
1971bc0f2195SMike Smith 	     * device.  Ignore the return value here; it's OK for the
1972bc0f2195SMike Smith 	     * device not to have any resources.
1973bc0f2195SMike Smith 	     */
197472ad60adSNate Lawson 	    acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
19750ae55423SMike Smith 	    break;
197615e32d5dSMike Smith 	}
197715e32d5dSMike Smith     }
1978be2b1797SNate Lawson 
19790ae55423SMike Smith     return_ACPI_STATUS (AE_OK);
198015e32d5dSMike Smith }
198115e32d5dSMike Smith 
198259a890e6SNate Lawson /*
198359a890e6SNate Lawson  * AcpiAttachData() requires an object handler but never uses it.  This is a
198459a890e6SNate Lawson  * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
198559a890e6SNate Lawson  */
198659a890e6SNate Lawson void
198792488a57SJung-uk Kim acpi_fake_objhandler(ACPI_HANDLE h, void *data)
198859a890e6SNate Lawson {
198959a890e6SNate Lawson }
199059a890e6SNate Lawson 
199115e32d5dSMike Smith static void
199215e32d5dSMike Smith acpi_shutdown_final(void *arg, int howto)
199315e32d5dSMike Smith {
19942d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
199571804adcSJung-uk Kim     register_t intr;
1996d33f4987STakanori Watanabe     ACPI_STATUS status;
1997eeb3a05fSNate Lawson 
1998eeb3a05fSNate Lawson     /*
199980f0e4c2SNate Lawson      * XXX Shutdown code should only run on the BSP (cpuid 0).
200080f0e4c2SNate Lawson      * Some chipsets do not power off the system correctly if called from
200180f0e4c2SNate Lawson      * an AP.
2002eeb3a05fSNate Lawson      */
2003eeb3a05fSNate Lawson     if ((howto & RB_POWEROFF) != 0) {
2004904bf0c2SNate Lawson 	status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
2005904bf0c2SNate Lawson 	if (ACPI_FAILURE(status)) {
20062d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2007904bf0c2SNate Lawson 		AcpiFormatException(status));
2008904bf0c2SNate Lawson 	    return;
2009904bf0c2SNate Lawson 	}
20102d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev, "Powering system off\n");
201171804adcSJung-uk Kim 	intr = intr_disable();
20121df130f1SJung-uk Kim 	status = AcpiEnterSleepState(ACPI_STATE_S5);
201371804adcSJung-uk Kim 	if (ACPI_FAILURE(status)) {
201471804adcSJung-uk Kim 	    intr_restore(intr);
20152d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "power-off failed - %s\n",
20162d0c82e8SJung-uk Kim 		AcpiFormatException(status));
201771804adcSJung-uk Kim 	} else {
201815e32d5dSMike Smith 	    DELAY(1000000);
201971804adcSJung-uk Kim 	    intr_restore(intr);
20202d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "power-off failed - timeout\n");
202115e32d5dSMike Smith 	}
2022ac731af5SJung-uk Kim     } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) {
2023d85e6785SNate Lawson 	/* Reboot using the reset register. */
2024ac731af5SJung-uk Kim 	status = AcpiReset();
2025ac731af5SJung-uk Kim 	if (ACPI_SUCCESS(status)) {
202687a500cdSNate Lawson 	    DELAY(1000000);
20272d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "reset failed - timeout\n");
2028ac731af5SJung-uk Kim 	} else if (status != AE_NOT_EXIST)
2029ac731af5SJung-uk Kim 	    device_printf(sc->acpi_dev, "reset failed - %s\n",
2030ac731af5SJung-uk Kim 		AcpiFormatException(status));
2031d85e6785SNate Lawson     } else if (sc->acpi_do_disable && panicstr == NULL) {
2032d85e6785SNate Lawson 	/*
2033d85e6785SNate Lawson 	 * Only disable ACPI if the user requested.  On some systems, writing
2034d85e6785SNate Lawson 	 * the disable value to SMI_CMD hangs the system.
2035d85e6785SNate Lawson 	 */
20362d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev, "Shutting down\n");
203780f0e4c2SNate Lawson 	AcpiTerminate();
203880f0e4c2SNate Lawson     }
203915e32d5dSMike Smith }
204015e32d5dSMike Smith 
204113d4f7baSMitsuru IWASAKI static void
204213d4f7baSMitsuru IWASAKI acpi_enable_fixed_events(struct acpi_softc *sc)
204313d4f7baSMitsuru IWASAKI {
204413d4f7baSMitsuru IWASAKI     static int	first_time = 1;
204513d4f7baSMitsuru IWASAKI 
204613d4f7baSMitsuru IWASAKI     /* Enable and clear fixed events and install handlers. */
20472be4e471SJung-uk Kim     if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
204859ddeb18SNate Lawson 	AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
204913d4f7baSMitsuru IWASAKI 	AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
205033febf93SNate Lawson 				     acpi_event_power_button_sleep, sc);
2051be2b1797SNate Lawson 	if (first_time)
20526c0e8467SNate Lawson 	    device_printf(sc->acpi_dev, "Power Button (fixed)\n");
205313d4f7baSMitsuru IWASAKI     }
20542be4e471SJung-uk Kim     if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
205559ddeb18SNate Lawson 	AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
205613d4f7baSMitsuru IWASAKI 	AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
205733febf93SNate Lawson 				     acpi_event_sleep_button_sleep, sc);
2058be2b1797SNate Lawson 	if (first_time)
20596c0e8467SNate Lawson 	    device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
206013d4f7baSMitsuru IWASAKI     }
206113d4f7baSMitsuru IWASAKI 
206213d4f7baSMitsuru IWASAKI     first_time = 0;
206313d4f7baSMitsuru IWASAKI }
206413d4f7baSMitsuru IWASAKI 
206515e32d5dSMike Smith /*
2066c5ba0be4SMike Smith  * Returns true if the device is actually present and should
2067c5ba0be4SMike Smith  * be attached to.  This requires the present, enabled, UI-visible
2068c5ba0be4SMike Smith  * and diagnostics-passed bits to be set.
2069c5ba0be4SMike Smith  */
2070c5ba0be4SMike Smith BOOLEAN
2071c5ba0be4SMike Smith acpi_DeviceIsPresent(device_t dev)
2072c5ba0be4SMike Smith {
20731e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
2074c5ba0be4SMike Smith     ACPI_HANDLE		h;
207592488a57SJung-uk Kim     BOOLEAN		present;
2076c5ba0be4SMike Smith 
207792488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
207892488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2079c5ba0be4SMike Smith 	return (FALSE);
2080be2b1797SNate Lawson 
2081be2b1797SNate Lawson     /* If no _STA method, must be present */
208292488a57SJung-uk Kim     present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
208392488a57SJung-uk Kim 	ACPI_DEVICE_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
2084be2b1797SNate Lawson 
208592488a57SJung-uk Kim     AcpiOsFree(devinfo);
208692488a57SJung-uk Kim     return (present);
2087c5ba0be4SMike Smith }
2088c5ba0be4SMike Smith 
2089c5ba0be4SMike Smith /*
2090b53f2771SMike Smith  * Returns true if the battery is actually present and inserted.
2091b53f2771SMike Smith  */
2092b53f2771SMike Smith BOOLEAN
2093b53f2771SMike Smith acpi_BatteryIsPresent(device_t dev)
2094b53f2771SMike Smith {
20951e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
2096b53f2771SMike Smith     ACPI_HANDLE		h;
209792488a57SJung-uk Kim     BOOLEAN		present;
2098b53f2771SMike Smith 
209992488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
210092488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2101b53f2771SMike Smith 	return (FALSE);
2102be2b1797SNate Lawson 
2103be2b1797SNate Lawson     /* If no _STA method, must be present */
210492488a57SJung-uk Kim     present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
210592488a57SJung-uk Kim 	ACPI_BATTERY_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
2106be2b1797SNate Lawson 
210792488a57SJung-uk Kim     AcpiOsFree(devinfo);
210892488a57SJung-uk Kim     return (present);
2109b53f2771SMike Smith }
2110b53f2771SMike Smith 
2111b53f2771SMike Smith /*
2112183c8af3SJohn Baldwin  * Returns true if a device has at least one valid device ID.
2113183c8af3SJohn Baldwin  */
2114183c8af3SJohn Baldwin static BOOLEAN
2115183c8af3SJohn Baldwin acpi_has_hid(ACPI_HANDLE h)
2116183c8af3SJohn Baldwin {
2117183c8af3SJohn Baldwin     ACPI_DEVICE_INFO	*devinfo;
2118183c8af3SJohn Baldwin     BOOLEAN		ret;
2119183c8af3SJohn Baldwin 
2120183c8af3SJohn Baldwin     if (h == NULL ||
2121183c8af3SJohn Baldwin 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2122183c8af3SJohn Baldwin 	return (FALSE);
2123183c8af3SJohn Baldwin 
2124183c8af3SJohn Baldwin     ret = FALSE;
2125183c8af3SJohn Baldwin     if ((devinfo->Valid & ACPI_VALID_HID) != 0)
2126183c8af3SJohn Baldwin 	ret = TRUE;
2127183c8af3SJohn Baldwin     else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
2128183c8af3SJohn Baldwin 	if (devinfo->CompatibleIdList.Count > 0)
2129183c8af3SJohn Baldwin 	    ret = TRUE;
2130183c8af3SJohn Baldwin 
2131183c8af3SJohn Baldwin     AcpiOsFree(devinfo);
2132183c8af3SJohn Baldwin     return (ret);
2133183c8af3SJohn Baldwin }
2134183c8af3SJohn Baldwin 
2135183c8af3SJohn Baldwin /*
213691233413SNate Lawson  * Match a HID string against a handle
213715e32d5dSMike Smith  */
21383c4c08dcSAlexander Motin BOOLEAN
2139ce619b2eSNate Lawson acpi_MatchHid(ACPI_HANDLE h, const char *hid)
214015e32d5dSMike Smith {
21411e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
214292488a57SJung-uk Kim     BOOLEAN		ret;
214392488a57SJung-uk Kim     int			i;
214492488a57SJung-uk Kim 
214592488a57SJung-uk Kim     if (hid == NULL || h == NULL ||
214692488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
214792488a57SJung-uk Kim 	return (FALSE);
214815e32d5dSMike Smith 
21491e4925e8SNate Lawson     ret = FALSE;
2150c59c9a8eSJohn Baldwin     if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
215192488a57SJung-uk Kim 	strcmp(hid, devinfo->HardwareId.String) == 0)
21521e4925e8SNate Lawson 	    ret = TRUE;
215392488a57SJung-uk Kim     else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
215492488a57SJung-uk Kim 	for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
215592488a57SJung-uk Kim 	    if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
21561e4925e8SNate Lawson 		ret = TRUE;
21571e4925e8SNate Lawson 		break;
21581e4925e8SNate Lawson 	    }
21591e4925e8SNate Lawson 	}
2160be2b1797SNate Lawson 
216192488a57SJung-uk Kim     AcpiOsFree(devinfo);
21621e4925e8SNate Lawson     return (ret);
216315e32d5dSMike Smith }
216415e32d5dSMike Smith 
216515e32d5dSMike Smith /*
2166c5ba0be4SMike Smith  * Return the handle of a named object within our scope, ie. that of (parent)
2167c5ba0be4SMike Smith  * or one if its parents.
2168c5ba0be4SMike Smith  */
2169c5ba0be4SMike Smith ACPI_STATUS
2170c5ba0be4SMike Smith acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
2171c5ba0be4SMike Smith {
2172c5ba0be4SMike Smith     ACPI_HANDLE		r;
2173c5ba0be4SMike Smith     ACPI_STATUS		status;
2174c5ba0be4SMike Smith 
2175be2b1797SNate Lawson     /* Walk back up the tree to the root */
2176c5ba0be4SMike Smith     for (;;) {
2177be2b1797SNate Lawson 	status = AcpiGetHandle(parent, path, &r);
2178be2b1797SNate Lawson 	if (ACPI_SUCCESS(status)) {
2179c5ba0be4SMike Smith 	    *result = r;
2180c5ba0be4SMike Smith 	    return (AE_OK);
2181c5ba0be4SMike Smith 	}
2182bee4aa4aSNate Lawson 	/* XXX Return error here? */
2183c5ba0be4SMike Smith 	if (status != AE_NOT_FOUND)
2184c5ba0be4SMike Smith 	    return (AE_OK);
2185b53f2771SMike Smith 	if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
2186c5ba0be4SMike Smith 	    return (AE_NOT_FOUND);
2187c5ba0be4SMike Smith 	parent = r;
2188c5ba0be4SMike Smith     }
2189c5ba0be4SMike Smith }
2190c5ba0be4SMike Smith 
2191c5ba0be4SMike Smith /*
2192c5ba0be4SMike Smith  * Allocate a buffer with a preset data size.
2193c5ba0be4SMike Smith  */
2194c5ba0be4SMike Smith ACPI_BUFFER *
2195c5ba0be4SMike Smith acpi_AllocBuffer(int size)
2196c5ba0be4SMike Smith {
2197c5ba0be4SMike Smith     ACPI_BUFFER	*buf;
2198c5ba0be4SMike Smith 
2199c5ba0be4SMike Smith     if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
2200c5ba0be4SMike Smith 	return (NULL);
2201c5ba0be4SMike Smith     buf->Length = size;
2202c5ba0be4SMike Smith     buf->Pointer = (void *)(buf + 1);
2203c5ba0be4SMike Smith     return (buf);
2204c5ba0be4SMike Smith }
2205c5ba0be4SMike Smith 
2206c310653eSNate Lawson ACPI_STATUS
2207cc58e4eeSNate Lawson acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
2208c310653eSNate Lawson {
2209c310653eSNate Lawson     ACPI_OBJECT arg1;
2210c310653eSNate Lawson     ACPI_OBJECT_LIST args;
2211c310653eSNate Lawson 
2212c310653eSNate Lawson     arg1.Type = ACPI_TYPE_INTEGER;
2213c310653eSNate Lawson     arg1.Integer.Value = number;
2214c310653eSNate Lawson     args.Count = 1;
2215c310653eSNate Lawson     args.Pointer = &arg1;
2216c310653eSNate Lawson 
2217c310653eSNate Lawson     return (AcpiEvaluateObject(handle, path, &args, NULL));
2218c310653eSNate Lawson }
2219c310653eSNate Lawson 
2220c5ba0be4SMike Smith /*
2221c5ba0be4SMike Smith  * Evaluate a path that should return an integer.
2222c5ba0be4SMike Smith  */
2223c5ba0be4SMike Smith ACPI_STATUS
2224cc58e4eeSNate Lawson acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
2225c5ba0be4SMike Smith {
2226be2b1797SNate Lawson     ACPI_STATUS	status;
2227c5ba0be4SMike Smith     ACPI_BUFFER	buf;
2228c573e654SMitsuru IWASAKI     ACPI_OBJECT	param;
2229c5ba0be4SMike Smith 
2230c5ba0be4SMike Smith     if (handle == NULL)
2231c5ba0be4SMike Smith 	handle = ACPI_ROOT_OBJECT;
22320c7da7acSJohn Baldwin 
22330c7da7acSJohn Baldwin     /*
22340c7da7acSJohn Baldwin      * Assume that what we've been pointed at is an Integer object, or
22350c7da7acSJohn Baldwin      * a method that will return an Integer.
22360c7da7acSJohn Baldwin      */
2237c5ba0be4SMike Smith     buf.Pointer = &param;
2238c5ba0be4SMike Smith     buf.Length = sizeof(param);
2239be2b1797SNate Lawson     status = AcpiEvaluateObject(handle, path, NULL, &buf);
2240be2b1797SNate Lawson     if (ACPI_SUCCESS(status)) {
2241be2b1797SNate Lawson 	if (param.Type == ACPI_TYPE_INTEGER)
2242c5ba0be4SMike Smith 	    *number = param.Integer.Value;
2243be2b1797SNate Lawson 	else
2244be2b1797SNate Lawson 	    status = AE_TYPE;
2245c5ba0be4SMike Smith     }
22460c7da7acSJohn Baldwin 
22470c7da7acSJohn Baldwin     /*
22480c7da7acSJohn Baldwin      * In some applications, a method that's expected to return an Integer
22490c7da7acSJohn Baldwin      * may instead return a Buffer (probably to simplify some internal
22500c7da7acSJohn Baldwin      * arithmetic).  We'll try to fetch whatever it is, and if it's a Buffer,
22510c7da7acSJohn Baldwin      * convert it into an Integer as best we can.
22520c7da7acSJohn Baldwin      *
22530c7da7acSJohn Baldwin      * This is a hack.
22540c7da7acSJohn Baldwin      */
2255be2b1797SNate Lawson     if (status == AE_BUFFER_OVERFLOW) {
2256b53f2771SMike Smith 	if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
2257be2b1797SNate Lawson 	    status = AE_NO_MEMORY;
22580c7da7acSJohn Baldwin 	} else {
2259be2b1797SNate Lawson 	    status = AcpiEvaluateObject(handle, path, NULL, &buf);
2260be2b1797SNate Lawson 	    if (ACPI_SUCCESS(status))
2261be2b1797SNate Lawson 		status = acpi_ConvertBufferToInteger(&buf, number);
22620c7da7acSJohn Baldwin 	    AcpiOsFree(buf.Pointer);
22630c7da7acSJohn Baldwin 	}
2264f97739daSNate Lawson     }
2265be2b1797SNate Lawson     return (status);
2266c5ba0be4SMike Smith }
2267c5ba0be4SMike Smith 
2268c573e654SMitsuru IWASAKI ACPI_STATUS
2269cc58e4eeSNate Lawson acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2270c573e654SMitsuru IWASAKI {
2271c573e654SMitsuru IWASAKI     ACPI_OBJECT	*p;
2272dba55fa2SNate Lawson     UINT8	*val;
2273c573e654SMitsuru IWASAKI     int		i;
2274c573e654SMitsuru IWASAKI 
2275c573e654SMitsuru IWASAKI     p = (ACPI_OBJECT *)bufp->Pointer;
2276c573e654SMitsuru IWASAKI     if (p->Type == ACPI_TYPE_INTEGER) {
2277c573e654SMitsuru IWASAKI 	*number = p->Integer.Value;
2278c573e654SMitsuru IWASAKI 	return (AE_OK);
2279c573e654SMitsuru IWASAKI     }
2280c573e654SMitsuru IWASAKI     if (p->Type != ACPI_TYPE_BUFFER)
2281c573e654SMitsuru IWASAKI 	return (AE_TYPE);
2282c573e654SMitsuru IWASAKI     if (p->Buffer.Length > sizeof(int))
2283c573e654SMitsuru IWASAKI 	return (AE_BAD_DATA);
2284be2b1797SNate Lawson 
2285c573e654SMitsuru IWASAKI     *number = 0;
2286dba55fa2SNate Lawson     val = p->Buffer.Pointer;
2287c573e654SMitsuru IWASAKI     for (i = 0; i < p->Buffer.Length; i++)
2288dba55fa2SNate Lawson 	*number += val[i] << (i * 8);
2289c573e654SMitsuru IWASAKI     return (AE_OK);
2290c573e654SMitsuru IWASAKI }
2291c573e654SMitsuru IWASAKI 
2292c5ba0be4SMike Smith /*
2293c5ba0be4SMike Smith  * Iterate over the elements of an a package object, calling the supplied
2294c5ba0be4SMike Smith  * function for each element.
2295c5ba0be4SMike Smith  *
2296c5ba0be4SMike Smith  * XXX possible enhancement might be to abort traversal on error.
2297c5ba0be4SMike Smith  */
2298c5ba0be4SMike Smith ACPI_STATUS
2299be2b1797SNate Lawson acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2300be2b1797SNate Lawson 	void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2301c5ba0be4SMike Smith {
2302c5ba0be4SMike Smith     ACPI_OBJECT	*comp;
2303c5ba0be4SMike Smith     int		i;
2304c5ba0be4SMike Smith 
2305be2b1797SNate Lawson     if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2306c5ba0be4SMike Smith 	return (AE_BAD_PARAMETER);
2307c5ba0be4SMike Smith 
2308be2b1797SNate Lawson     /* Iterate over components */
2309be2b1797SNate Lawson     i = 0;
2310be2b1797SNate Lawson     comp = pkg->Package.Elements;
2311be2b1797SNate Lawson     for (; i < pkg->Package.Count; i++, comp++)
2312c5ba0be4SMike Smith 	func(comp, arg);
2313c5ba0be4SMike Smith 
2314c5ba0be4SMike Smith     return (AE_OK);
2315c5ba0be4SMike Smith }
2316c5ba0be4SMike Smith 
23176f69255bSMike Smith /*
23186f69255bSMike Smith  * Find the (index)th resource object in a set.
23196f69255bSMike Smith  */
23206f69255bSMike Smith ACPI_STATUS
23216d63101aSMike Smith acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
23226f69255bSMike Smith {
23236d63101aSMike Smith     ACPI_RESOURCE	*rp;
23246f69255bSMike Smith     int			i;
23256f69255bSMike Smith 
23266d63101aSMike Smith     rp = (ACPI_RESOURCE *)buf->Pointer;
23276f69255bSMike Smith     i = index;
23286d63101aSMike Smith     while (i-- > 0) {
2329be2b1797SNate Lawson 	/* Range check */
23306d63101aSMike Smith 	if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
23316f69255bSMike Smith 	    return (AE_BAD_PARAMETER);
2332be2b1797SNate Lawson 
2333be2b1797SNate Lawson 	/* Check for terminator */
2334e8d472a7SJung-uk Kim 	if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
23356d63101aSMike Smith 	    return (AE_NOT_FOUND);
2336abcbc5bcSNate Lawson 	rp = ACPI_NEXT_RESOURCE(rp);
23376f69255bSMike Smith     }
23386f69255bSMike Smith     if (resp != NULL)
23396d63101aSMike Smith 	*resp = rp;
2340be2b1797SNate Lawson 
23416d63101aSMike Smith     return (AE_OK);
23426d63101aSMike Smith }
23436d63101aSMike Smith 
23446d63101aSMike Smith /*
23456d63101aSMike Smith  * Append an ACPI_RESOURCE to an ACPI_BUFFER.
23466d63101aSMike Smith  *
23476d63101aSMike Smith  * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
23486d63101aSMike Smith  * provided to contain it.  If the ACPI_BUFFER is empty, allocate a sensible
23496d63101aSMike Smith  * backing block.  If the ACPI_RESOURCE is NULL, return an empty set of
23506d63101aSMike Smith  * resources.
23516d63101aSMike Smith  */
23526d63101aSMike Smith #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE	512
23536d63101aSMike Smith 
23546d63101aSMike Smith ACPI_STATUS
23556d63101aSMike Smith acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
23566d63101aSMike Smith {
23576d63101aSMike Smith     ACPI_RESOURCE	*rp;
23586d63101aSMike Smith     void		*newp;
23596d63101aSMike Smith 
2360be2b1797SNate Lawson     /* Initialise the buffer if necessary. */
23616d63101aSMike Smith     if (buf->Pointer == NULL) {
23626d63101aSMike Smith 	buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
23636d63101aSMike Smith 	if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
23646d63101aSMike Smith 	    return (AE_NO_MEMORY);
23656d63101aSMike Smith 	rp = (ACPI_RESOURCE *)buf->Pointer;
2366e8d472a7SJung-uk Kim 	rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
236760d306f0SJohn Baldwin 	rp->Length = ACPI_RS_SIZE_MIN;
23686d63101aSMike Smith     }
23696d63101aSMike Smith     if (res == NULL)
23706d63101aSMike Smith 	return (AE_OK);
23716d63101aSMike Smith 
23726d63101aSMike Smith     /*
23736d63101aSMike Smith      * Scan the current buffer looking for the terminator.
23746d63101aSMike Smith      * This will either find the terminator or hit the end
23756d63101aSMike Smith      * of the buffer and return an error.
23766d63101aSMike Smith      */
23776d63101aSMike Smith     rp = (ACPI_RESOURCE *)buf->Pointer;
23786d63101aSMike Smith     for (;;) {
2379be2b1797SNate Lawson 	/* Range check, don't go outside the buffer */
23806d63101aSMike Smith 	if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
23816d63101aSMike Smith 	    return (AE_BAD_PARAMETER);
2382e8d472a7SJung-uk Kim 	if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
23836d63101aSMike Smith 	    break;
2384abcbc5bcSNate Lawson 	rp = ACPI_NEXT_RESOURCE(rp);
23856d63101aSMike Smith     }
23866d63101aSMike Smith 
23876d63101aSMike Smith     /*
23886d63101aSMike Smith      * Check the size of the buffer and expand if required.
23896d63101aSMike Smith      *
23906d63101aSMike Smith      * Required size is:
23916d63101aSMike Smith      *	size of existing resources before terminator +
23926d63101aSMike Smith      *	size of new resource and header +
23936d63101aSMike Smith      * 	size of terminator.
23946d63101aSMike Smith      *
23956d63101aSMike Smith      * Note that this loop should really only run once, unless
23966d63101aSMike Smith      * for some reason we are stuffing a *really* huge resource.
23976d63101aSMike Smith      */
23986d63101aSMike Smith     while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
2399e8d472a7SJung-uk Kim 	    res->Length + ACPI_RS_SIZE_NO_DATA +
2400e8d472a7SJung-uk Kim 	    ACPI_RS_SIZE_MIN) >= buf->Length) {
24016d63101aSMike Smith 	if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
24026d63101aSMike Smith 	    return (AE_NO_MEMORY);
24036d63101aSMike Smith 	bcopy(buf->Pointer, newp, buf->Length);
2404a692219dSMike Smith 	rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2405a692219dSMike Smith 			       ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
24066d63101aSMike Smith 	AcpiOsFree(buf->Pointer);
24076d63101aSMike Smith 	buf->Pointer = newp;
24086d63101aSMike Smith 	buf->Length += buf->Length;
24096d63101aSMike Smith     }
24106d63101aSMike Smith 
2411be2b1797SNate Lawson     /* Insert the new resource. */
2412e8d472a7SJung-uk Kim     bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
24136d63101aSMike Smith 
2414be2b1797SNate Lawson     /* And add the terminator. */
2415abcbc5bcSNate Lawson     rp = ACPI_NEXT_RESOURCE(rp);
2416e8d472a7SJung-uk Kim     rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
241760d306f0SJohn Baldwin     rp->Length = ACPI_RS_SIZE_MIN;
24186d63101aSMike Smith 
24196f69255bSMike Smith     return (AE_OK);
24206f69255bSMike Smith }
2421c5ba0be4SMike Smith 
2422da14ac9fSJohn Baldwin /*
2423da14ac9fSJohn Baldwin  * Set interrupt model.
2424da14ac9fSJohn Baldwin  */
2425da14ac9fSJohn Baldwin ACPI_STATUS
2426da14ac9fSJohn Baldwin acpi_SetIntrModel(int model)
2427da14ac9fSJohn Baldwin {
2428da14ac9fSJohn Baldwin 
2429c310653eSNate Lawson     return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2430da14ac9fSJohn Baldwin }
2431da14ac9fSJohn Baldwin 
243200a30448SNate Lawson /*
2433d95e7f5aSJohn Baldwin  * Walk subtables of a table and call a callback routine for each
2434d95e7f5aSJohn Baldwin  * subtable.  The caller should provide the first subtable and a
2435d95e7f5aSJohn Baldwin  * pointer to the end of the table.  This can be used to walk tables
2436d95e7f5aSJohn Baldwin  * such as MADT and SRAT that use subtable entries.
2437d95e7f5aSJohn Baldwin  */
2438d95e7f5aSJohn Baldwin void
2439d95e7f5aSJohn Baldwin acpi_walk_subtables(void *first, void *end, acpi_subtable_handler *handler,
2440d95e7f5aSJohn Baldwin     void *arg)
2441d95e7f5aSJohn Baldwin {
2442d95e7f5aSJohn Baldwin     ACPI_SUBTABLE_HEADER *entry;
2443d95e7f5aSJohn Baldwin 
2444d95e7f5aSJohn Baldwin     for (entry = first; (void *)entry < end; ) {
2445d95e7f5aSJohn Baldwin 	/* Avoid an infinite loop if we hit a bogus entry. */
2446d95e7f5aSJohn Baldwin 	if (entry->Length < sizeof(ACPI_SUBTABLE_HEADER))
2447d95e7f5aSJohn Baldwin 	    return;
2448d95e7f5aSJohn Baldwin 
2449d95e7f5aSJohn Baldwin 	handler(entry, arg);
2450d95e7f5aSJohn Baldwin 	entry = ACPI_ADD_PTR(ACPI_SUBTABLE_HEADER, entry, entry->Length);
2451d95e7f5aSJohn Baldwin     }
2452d95e7f5aSJohn Baldwin }
2453d95e7f5aSJohn Baldwin 
2454d95e7f5aSJohn Baldwin /*
245500a30448SNate Lawson  * DEPRECATED.  This interface has serious deficiencies and will be
245600a30448SNate Lawson  * removed.
245700a30448SNate Lawson  *
245800a30448SNate Lawson  * Immediately enter the sleep state.  In the old model, acpiconf(8) ran
245900a30448SNate Lawson  * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
246000a30448SNate Lawson  */
246100a30448SNate Lawson ACPI_STATUS
246200a30448SNate Lawson acpi_SetSleepState(struct acpi_softc *sc, int state)
246300a30448SNate Lawson {
246400a30448SNate Lawson     static int once;
246500a30448SNate Lawson 
246600a30448SNate Lawson     if (!once) {
24672d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
246800a30448SNate Lawson "warning: acpi_SetSleepState() deprecated, need to update your software\n");
246900a30448SNate Lawson 	once = 1;
247000a30448SNate Lawson     }
247100a30448SNate Lawson     return (acpi_EnterSleepState(sc, state));
247200a30448SNate Lawson }
247300a30448SNate Lawson 
2474c66d2b38SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
247500a30448SNate Lawson static void
2476ffe3f1f8SMitsuru IWASAKI acpi_sleep_force_task(void *context)
2477ffe3f1f8SMitsuru IWASAKI {
2478ffe3f1f8SMitsuru IWASAKI     struct acpi_softc *sc = (struct acpi_softc *)context;
2479ffe3f1f8SMitsuru IWASAKI 
2480ffe3f1f8SMitsuru IWASAKI     if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2481ffe3f1f8SMitsuru IWASAKI 	device_printf(sc->acpi_dev, "force sleep state S%d failed\n",
2482ffe3f1f8SMitsuru IWASAKI 	    sc->acpi_next_sstate);
2483ffe3f1f8SMitsuru IWASAKI }
2484ffe3f1f8SMitsuru IWASAKI 
2485ffe3f1f8SMitsuru IWASAKI static void
248600a30448SNate Lawson acpi_sleep_force(void *arg)
248700a30448SNate Lawson {
24882d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
248900a30448SNate Lawson 
24902d0c82e8SJung-uk Kim     device_printf(sc->acpi_dev,
24912d0c82e8SJung-uk Kim 	"suspend request timed out, forcing sleep now\n");
2492ffe3f1f8SMitsuru IWASAKI     /*
2493ffe3f1f8SMitsuru IWASAKI      * XXX Suspending from callout cause the freeze in DEVICE_SUSPEND().
2494ffe3f1f8SMitsuru IWASAKI      * Suspend from acpi_task thread in stead.
2495ffe3f1f8SMitsuru IWASAKI      */
2496ffe3f1f8SMitsuru IWASAKI     if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
2497ffe3f1f8SMitsuru IWASAKI 	acpi_sleep_force_task, sc)))
2498ffe3f1f8SMitsuru IWASAKI 	device_printf(sc->acpi_dev, "AcpiOsExecute() for sleeping failed\n");
249900a30448SNate Lawson }
2500c66d2b38SJung-uk Kim #endif
250100a30448SNate Lawson 
250200a30448SNate Lawson /*
250300a30448SNate Lawson  * Request that the system enter the given suspend state.  All /dev/apm
250400a30448SNate Lawson  * devices and devd(8) will be notified.  Userland then has a chance to
250500a30448SNate Lawson  * save state and acknowledge the request.  The system sleeps once all
250600a30448SNate Lawson  * acks are in.
250700a30448SNate Lawson  */
250800a30448SNate Lawson int
250900a30448SNate Lawson acpi_ReqSleepState(struct acpi_softc *sc, int state)
251000a30448SNate Lawson {
251171f99e63SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
251200a30448SNate Lawson     struct apm_clone_data *clone;
2513337744d9SJung-uk Kim     ACPI_STATUS status;
251400a30448SNate Lawson 
2515a0e73a12SJung-uk Kim     if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
251600a30448SNate Lawson 	return (EINVAL);
2517a0e73a12SJung-uk Kim     if (!acpi_sleep_states[state])
2518a0e73a12SJung-uk Kim 	return (EOPNOTSUPP);
251900a30448SNate Lawson 
2520b12bc99fSMitsuru IWASAKI     /* If a suspend request is already in progress, just return. */
2521b12bc99fSMitsuru IWASAKI     if (sc->acpi_next_sstate != 0) {
2522b12bc99fSMitsuru IWASAKI 	return (0);
2523b12bc99fSMitsuru IWASAKI     }
2524b12bc99fSMitsuru IWASAKI 
2525f22377a8SMitsuru IWASAKI     /* Wait until sleep is enabled. */
2526f22377a8SMitsuru IWASAKI     while (sc->acpi_sleep_disabled) {
2527f22377a8SMitsuru IWASAKI 	AcpiOsSleep(1000);
2528f22377a8SMitsuru IWASAKI     }
2529f22377a8SMitsuru IWASAKI 
2530337744d9SJung-uk Kim     ACPI_LOCK(acpi);
253100a30448SNate Lawson 
2532f22377a8SMitsuru IWASAKI     sc->acpi_next_sstate = state;
253300a30448SNate Lawson 
2534337744d9SJung-uk Kim     /* S5 (soft-off) should be entered directly with no waiting. */
2535337744d9SJung-uk Kim     if (state == ACPI_STATE_S5) {
2536337744d9SJung-uk Kim     	ACPI_UNLOCK(acpi);
2537337744d9SJung-uk Kim 	status = acpi_EnterSleepState(sc, state);
2538337744d9SJung-uk Kim 	return (ACPI_SUCCESS(status) ? 0 : ENXIO);
2539337744d9SJung-uk Kim     }
2540337744d9SJung-uk Kim 
254100a30448SNate Lawson     /* Record the pending state and notify all apm devices. */
254200a30448SNate Lawson     STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
254300a30448SNate Lawson 	clone->notify_status = APM_EV_NONE;
254400a30448SNate Lawson 	if ((clone->flags & ACPI_EVF_DEVD) == 0) {
254500a30448SNate Lawson 	    selwakeuppri(&clone->sel_read, PZERO);
2546374d9c4dSJohn Baldwin 	    KNOTE_LOCKED(&clone->sel_read.si_note, 0);
254700a30448SNate Lawson 	}
254800a30448SNate Lawson     }
254900a30448SNate Lawson 
25500c26519eSMitsuru IWASAKI     /* If devd(8) is not running, immediately enter the sleep state. */
2551d42f0ad8SJung-uk Kim     if (!devctl_process_running()) {
25520c26519eSMitsuru IWASAKI 	ACPI_UNLOCK(acpi);
2553337744d9SJung-uk Kim 	status = acpi_EnterSleepState(sc, state);
2554337744d9SJung-uk Kim 	return (ACPI_SUCCESS(status) ? 0 : ENXIO);
25550c26519eSMitsuru IWASAKI     }
25560c26519eSMitsuru IWASAKI 
255700a30448SNate Lawson     /*
255800a30448SNate Lawson      * Set a timeout to fire if userland doesn't ack the suspend request
255900a30448SNate Lawson      * in time.  This way we still eventually go to sleep if we were
256000a30448SNate Lawson      * overheating or running low on battery, even if userland is hung.
256100a30448SNate Lawson      * We cancel this timeout once all userland acks are in or the
256200a30448SNate Lawson      * suspend request is aborted.
256300a30448SNate Lawson      */
256400a30448SNate Lawson     callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
256500a30448SNate Lawson     ACPI_UNLOCK(acpi);
2566d42f0ad8SJung-uk Kim 
2567d42f0ad8SJung-uk Kim     /* Now notify devd(8) also. */
2568d42f0ad8SJung-uk Kim     acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2569d42f0ad8SJung-uk Kim 
257000a30448SNate Lawson     return (0);
2571c66d2b38SJung-uk Kim #else
2572c66d2b38SJung-uk Kim     /* This platform does not support acpi suspend/resume. */
2573c66d2b38SJung-uk Kim     return (EOPNOTSUPP);
2574c66d2b38SJung-uk Kim #endif
257500a30448SNate Lawson }
257600a30448SNate Lawson 
257700a30448SNate Lawson /*
257800a30448SNate Lawson  * Acknowledge (or reject) a pending sleep state.  The caller has
257900a30448SNate Lawson  * prepared for suspend and is now ready for it to proceed.  If the
258000a30448SNate Lawson  * error argument is non-zero, it indicates suspend should be cancelled
258100a30448SNate Lawson  * and gives an errno value describing why.  Once all votes are in,
258200a30448SNate Lawson  * we suspend the system.
258300a30448SNate Lawson  */
258400a30448SNate Lawson int
258500a30448SNate Lawson acpi_AckSleepState(struct apm_clone_data *clone, int error)
258600a30448SNate Lawson {
2587c66d2b38SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
258800a30448SNate Lawson     struct acpi_softc *sc;
258900a30448SNate Lawson     int ret, sleeping;
259000a30448SNate Lawson 
259100a30448SNate Lawson     /* If no pending sleep state, return an error. */
259200a30448SNate Lawson     ACPI_LOCK(acpi);
259300a30448SNate Lawson     sc = clone->acpi_sc;
259400a30448SNate Lawson     if (sc->acpi_next_sstate == 0) {
259500a30448SNate Lawson     	ACPI_UNLOCK(acpi);
259600a30448SNate Lawson 	return (ENXIO);
259700a30448SNate Lawson     }
259800a30448SNate Lawson 
259900a30448SNate Lawson     /* Caller wants to abort suspend process. */
260000a30448SNate Lawson     if (error) {
260100a30448SNate Lawson 	sc->acpi_next_sstate = 0;
260200a30448SNate Lawson 	callout_stop(&sc->susp_force_to);
26032d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
26042d0c82e8SJung-uk Kim 	    "listener on %s cancelled the pending suspend\n",
260500a30448SNate Lawson 	    devtoname(clone->cdev));
260600a30448SNate Lawson     	ACPI_UNLOCK(acpi);
260700a30448SNate Lawson 	return (0);
260800a30448SNate Lawson     }
260900a30448SNate Lawson 
261000a30448SNate Lawson     /*
261100a30448SNate Lawson      * Mark this device as acking the suspend request.  Then, walk through
261200a30448SNate Lawson      * all devices, seeing if they agree yet.  We only count devices that
261300a30448SNate Lawson      * are writable since read-only devices couldn't ack the request.
261400a30448SNate Lawson      */
261500a30448SNate Lawson     sleeping = TRUE;
2616c66d2b38SJung-uk Kim     clone->notify_status = APM_EV_ACKED;
261700a30448SNate Lawson     STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
261800a30448SNate Lawson 	if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
261900a30448SNate Lawson 	    clone->notify_status != APM_EV_ACKED) {
262000a30448SNate Lawson 	    sleeping = FALSE;
262100a30448SNate Lawson 	    break;
262200a30448SNate Lawson 	}
262300a30448SNate Lawson     }
262400a30448SNate Lawson 
262500a30448SNate Lawson     /* If all devices have voted "yes", we will suspend now. */
262600a30448SNate Lawson     if (sleeping)
262700a30448SNate Lawson 	callout_stop(&sc->susp_force_to);
262800a30448SNate Lawson     ACPI_UNLOCK(acpi);
262900a30448SNate Lawson     ret = 0;
263000a30448SNate Lawson     if (sleeping) {
263100a30448SNate Lawson 	if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
263200a30448SNate Lawson 		ret = ENODEV;
263300a30448SNate Lawson     }
263400a30448SNate Lawson     return (ret);
2635c66d2b38SJung-uk Kim #else
2636c66d2b38SJung-uk Kim     /* This platform does not support acpi suspend/resume. */
2637c66d2b38SJung-uk Kim     return (EOPNOTSUPP);
2638c66d2b38SJung-uk Kim #endif
263900a30448SNate Lawson }
264000a30448SNate Lawson 
2641ece50487SMitsuru IWASAKI static void
2642ece50487SMitsuru IWASAKI acpi_sleep_enable(void *arg)
2643ece50487SMitsuru IWASAKI {
2644d42f0ad8SJung-uk Kim     struct acpi_softc	*sc = (struct acpi_softc *)arg;
2645bee4aa4aSNate Lawson 
2646a0e73a12SJung-uk Kim     /* Reschedule if the system is not fully up and running. */
2647a0e73a12SJung-uk Kim     if (!AcpiGbl_SystemAwakeAndRunning) {
2648a0e73a12SJung-uk Kim 	timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME);
2649a0e73a12SJung-uk Kim 	return;
2650a0e73a12SJung-uk Kim     }
2651a0e73a12SJung-uk Kim 
2652d42f0ad8SJung-uk Kim     ACPI_LOCK(acpi);
2653a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = FALSE;
2654d42f0ad8SJung-uk Kim     ACPI_UNLOCK(acpi);
2655d42f0ad8SJung-uk Kim }
2656d42f0ad8SJung-uk Kim 
2657d42f0ad8SJung-uk Kim static ACPI_STATUS
2658d42f0ad8SJung-uk Kim acpi_sleep_disable(struct acpi_softc *sc)
2659d42f0ad8SJung-uk Kim {
2660d42f0ad8SJung-uk Kim     ACPI_STATUS		status;
2661d42f0ad8SJung-uk Kim 
2662a0e73a12SJung-uk Kim     /* Fail if the system is not fully up and running. */
2663a0e73a12SJung-uk Kim     if (!AcpiGbl_SystemAwakeAndRunning)
2664a0e73a12SJung-uk Kim 	return (AE_ERROR);
2665a0e73a12SJung-uk Kim 
2666d42f0ad8SJung-uk Kim     ACPI_LOCK(acpi);
2667d42f0ad8SJung-uk Kim     status = sc->acpi_sleep_disabled ? AE_ERROR : AE_OK;
2668a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = TRUE;
2669d42f0ad8SJung-uk Kim     ACPI_UNLOCK(acpi);
2670d42f0ad8SJung-uk Kim 
2671d42f0ad8SJung-uk Kim     return (status);
2672ece50487SMitsuru IWASAKI }
2673c30382dfSMitsuru IWASAKI 
267415e2f34fSNate Lawson enum acpi_sleep_state {
267515e2f34fSNate Lawson     ACPI_SS_NONE,
267615e2f34fSNate Lawson     ACPI_SS_GPE_SET,
267715e2f34fSNate Lawson     ACPI_SS_DEV_SUSPEND,
267815e2f34fSNate Lawson     ACPI_SS_SLP_PREP,
267915e2f34fSNate Lawson     ACPI_SS_SLEPT,
268015e2f34fSNate Lawson };
268115e2f34fSNate Lawson 
268215e32d5dSMike Smith /*
268300a30448SNate Lawson  * Enter the desired system sleep state.
268415e32d5dSMike Smith  *
2685be2b1797SNate Lawson  * Currently we support S1-S5 but S4 is only S4BIOS
268615e32d5dSMike Smith  */
268700a30448SNate Lawson static ACPI_STATUS
268800a30448SNate Lawson acpi_EnterSleepState(struct acpi_softc *sc, int state)
268915e32d5dSMike Smith {
269071804adcSJung-uk Kim     register_t intr;
269115e2f34fSNate Lawson     ACPI_STATUS status;
2692b913a7d5SAndriy Gapon     ACPI_EVENT_STATUS power_button_status;
269315e2f34fSNate Lawson     enum acpi_sleep_state slp_state;
2694f0a101b7SMitsuru IWASAKI     int sleep_result;
269515e32d5dSMike Smith 
2696b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
26970ae55423SMike Smith 
2698a0e73a12SJung-uk Kim     if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
269933c70d41SAndriy Gapon 	return_ACPI_STATUS (AE_BAD_PARAMETER);
2700a0e73a12SJung-uk Kim     if (!acpi_sleep_states[state]) {
2701a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev, "Sleep state S%d not supported by BIOS\n",
2702a0e73a12SJung-uk Kim 	    state);
2703a0e73a12SJung-uk Kim 	return (AE_SUPPORT);
2704a0e73a12SJung-uk Kim     }
2705a0e73a12SJung-uk Kim 
2706a0e73a12SJung-uk Kim     /* Re-entry once we're suspending is not allowed. */
2707a0e73a12SJung-uk Kim     status = acpi_sleep_disable(sc);
2708a0e73a12SJung-uk Kim     if (ACPI_FAILURE(status)) {
2709a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev,
2710a0e73a12SJung-uk Kim 	    "suspend request ignored (not ready yet)\n");
2711a0e73a12SJung-uk Kim 	return (status);
2712a0e73a12SJung-uk Kim     }
271333c70d41SAndriy Gapon 
271433c70d41SAndriy Gapon     if (state == ACPI_STATE_S5) {
271533c70d41SAndriy Gapon 	/*
271633c70d41SAndriy Gapon 	 * Shut down cleanly and power off.  This will call us back through the
271733c70d41SAndriy Gapon 	 * shutdown handlers.
271833c70d41SAndriy Gapon 	 */
271933c70d41SAndriy Gapon 	shutdown_nice(RB_POWEROFF);
272033c70d41SAndriy Gapon 	return_ACPI_STATUS (AE_OK);
272133c70d41SAndriy Gapon     }
272233c70d41SAndriy Gapon 
27234a8fa6feSJung-uk Kim     EVENTHANDLER_INVOKE(power_suspend);
27244a8fa6feSJung-uk Kim 
272536a483bbSJung-uk Kim     if (smp_started) {
2726c66d2b38SJung-uk Kim 	thread_lock(curthread);
2727c66d2b38SJung-uk Kim 	sched_bind(curthread, 0);
2728c66d2b38SJung-uk Kim 	thread_unlock(curthread);
272936a483bbSJung-uk Kim     }
2730c66d2b38SJung-uk Kim 
2731a56fe095SJohn Baldwin     /*
2732a56fe095SJohn Baldwin      * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2733a56fe095SJohn Baldwin      * drivers need this.
2734a56fe095SJohn Baldwin      */
2735a56fe095SJohn Baldwin     mtx_lock(&Giant);
2736c66d2b38SJung-uk Kim 
273715e2f34fSNate Lawson     slp_state = ACPI_SS_NONE;
273856d8cb57SMitsuru IWASAKI 
2739a1fccb47SMitsuru IWASAKI     sc->acpi_sstate = state;
2740a1fccb47SMitsuru IWASAKI 
2741d4b9ff91SNate Lawson     /* Enable any GPEs as appropriate and requested by the user. */
2742d4b9ff91SNate Lawson     acpi_wake_prep_walk(state);
274315e2f34fSNate Lawson     slp_state = ACPI_SS_GPE_SET;
2744e8b4d56eSNate Lawson 
274515e32d5dSMike Smith     /*
2746c7f88fc3SNate Lawson      * Inform all devices that we are going to sleep.  If at least one
2747c7f88fc3SNate Lawson      * device fails, DEVICE_SUSPEND() automatically resumes the tree.
274815e32d5dSMike Smith      *
2749c7f88fc3SNate Lawson      * XXX Note that a better two-pass approach with a 'veto' pass
2750c7f88fc3SNate Lawson      * followed by a "real thing" pass would be better, but the current
2751c7f88fc3SNate Lawson      * bus interface does not provide for this.
275215e32d5dSMike Smith      */
275315e2f34fSNate Lawson     if (DEVICE_SUSPEND(root_bus) != 0) {
275415e2f34fSNate Lawson 	device_printf(sc->acpi_dev, "device_suspend failed\n");
275533c70d41SAndriy Gapon 	goto backout;
275615e2f34fSNate Lawson     }
275715e2f34fSNate Lawson     slp_state = ACPI_SS_DEV_SUSPEND;
2758b9c780d6SMitsuru IWASAKI 
275993bfd059SNate Lawson     /* If testing device suspend only, back out of everything here. */
276093bfd059SNate Lawson     if (acpi_susp_bounce)
276133c70d41SAndriy Gapon 	goto backout;
276293bfd059SNate Lawson 
2763be2b1797SNate Lawson     status = AcpiEnterSleepStatePrep(state);
2764be2b1797SNate Lawson     if (ACPI_FAILURE(status)) {
2765b9c780d6SMitsuru IWASAKI 	device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2766b9c780d6SMitsuru IWASAKI 		      AcpiFormatException(status));
276733c70d41SAndriy Gapon 	goto backout;
2768b9c780d6SMitsuru IWASAKI     }
276915e2f34fSNate Lawson     slp_state = ACPI_SS_SLP_PREP;
2770b9c780d6SMitsuru IWASAKI 
2771be2b1797SNate Lawson     if (sc->acpi_sleep_delay > 0)
2772ff01efb5SMitsuru IWASAKI 	DELAY(sc->acpi_sleep_delay * 1000000);
2773ff01efb5SMitsuru IWASAKI 
2774f0a101b7SMitsuru IWASAKI     intr = intr_disable();
27754d46ef51SJung-uk Kim     if (state != ACPI_STATE_S1) {
2776f0a101b7SMitsuru IWASAKI 	sleep_result = acpi_sleep_machdep(sc, state);
2777f0a101b7SMitsuru IWASAKI 	acpi_wakeup_machdep(sc, state, sleep_result, 0);
2778b1a5c017SAndriy Gapon 
2779b1a5c017SAndriy Gapon 	/*
2780b1a5c017SAndriy Gapon 	 * XXX According to ACPI specification SCI_EN bit should be restored
2781b1a5c017SAndriy Gapon 	 * by ACPI platform (BIOS, firmware) to its pre-sleep state.
2782b1a5c017SAndriy Gapon 	 * Unfortunately some BIOSes fail to do that and that leads to
2783b1a5c017SAndriy Gapon 	 * unexpected and serious consequences during wake up like a system
2784b1a5c017SAndriy Gapon 	 * getting stuck in SMI handlers.
2785b1a5c017SAndriy Gapon 	 * This hack is picked up from Linux, which claims that it follows
2786b1a5c017SAndriy Gapon 	 * Windows behavior.
2787b1a5c017SAndriy Gapon 	 */
2788b1a5c017SAndriy Gapon 	if (sleep_result == 1 && state != ACPI_STATE_S4)
2789b1a5c017SAndriy Gapon 	    AcpiWriteBitRegister(ACPI_BITREG_SCI_ENABLE, ACPI_ENABLE_EVENT);
2790b1a5c017SAndriy Gapon 
27911df130f1SJung-uk Kim 	AcpiLeaveSleepStatePrep(state);
2792b913a7d5SAndriy Gapon 
2793b913a7d5SAndriy Gapon 	if (sleep_result == 1 && state == ACPI_STATE_S3) {
2794b913a7d5SAndriy Gapon 	    /*
2795b913a7d5SAndriy Gapon 	     * Prevent mis-interpretation of the wakeup by power button
2796b913a7d5SAndriy Gapon 	     * as a request for power off.
2797b913a7d5SAndriy Gapon 	     * Ideally we should post an appropriate wakeup event,
2798b913a7d5SAndriy Gapon 	     * perhaps using acpi_event_power_button_wake or alike.
2799b913a7d5SAndriy Gapon 	     *
2800b913a7d5SAndriy Gapon 	     * Clearing of power button status after wakeup is mandated
2801b913a7d5SAndriy Gapon 	     * by ACPI specification in section "Fixed Power Button".
2802b913a7d5SAndriy Gapon 	     *
2803b913a7d5SAndriy Gapon 	     * XXX As of ACPICA 20121114 AcpiGetEventStatus provides
2804b913a7d5SAndriy Gapon 	     * status as 0/1 corressponding to inactive/active despite
2805b913a7d5SAndriy Gapon 	     * its type being ACPI_EVENT_STATUS.  In other words,
2806b913a7d5SAndriy Gapon 	     * we should not test for ACPI_EVENT_FLAG_SET for time being.
2807b913a7d5SAndriy Gapon 	     */
2808b913a7d5SAndriy Gapon 	    if (ACPI_SUCCESS(AcpiGetEventStatus(ACPI_EVENT_POWER_BUTTON,
2809b913a7d5SAndriy Gapon 		&power_button_status)) && power_button_status != 0) {
2810b913a7d5SAndriy Gapon 		AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
2811b913a7d5SAndriy Gapon 		device_printf(sc->acpi_dev,
2812b913a7d5SAndriy Gapon 		    "cleared fixed power button status\n");
2813b913a7d5SAndriy Gapon 	    }
2814b913a7d5SAndriy Gapon 	}
2815b913a7d5SAndriy Gapon 
2816f0a101b7SMitsuru IWASAKI 	intr_restore(intr);
2817f0a101b7SMitsuru IWASAKI 
2818f0a101b7SMitsuru IWASAKI 	/* call acpi_wakeup_machdep() again with interrupt enabled */
2819f0a101b7SMitsuru IWASAKI 	acpi_wakeup_machdep(sc, state, sleep_result, 1);
2820f0a101b7SMitsuru IWASAKI 
2821f0a101b7SMitsuru IWASAKI 	if (sleep_result == -1)
2822a159c266SJung-uk Kim 		goto backout;
28236161544cSTakanori Watanabe 
28246161544cSTakanori Watanabe 	/* Re-enable ACPI hardware on wakeup from sleep state 4. */
2825be2b1797SNate Lawson 	if (state == ACPI_STATE_S4)
2826964679ceSMitsuru IWASAKI 	    AcpiEnable();
28276161544cSTakanori Watanabe     } else {
28281df130f1SJung-uk Kim 	status = AcpiEnterSleepState(state);
28291df130f1SJung-uk Kim 	AcpiLeaveSleepStatePrep(state);
283071804adcSJung-uk Kim 	intr_restore(intr);
2831be2b1797SNate Lawson 	if (ACPI_FAILURE(status)) {
2832be2b1797SNate Lawson 	    device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2833be2b1797SNate Lawson 			  AcpiFormatException(status));
283433c70d41SAndriy Gapon 	    goto backout;
283515e32d5dSMike Smith 	}
28366161544cSTakanori Watanabe     }
283715e2f34fSNate Lawson     slp_state = ACPI_SS_SLEPT;
2838ece50487SMitsuru IWASAKI 
283915e2f34fSNate Lawson     /*
284015e2f34fSNate Lawson      * Back out state according to how far along we got in the suspend
284115e2f34fSNate Lawson      * process.  This handles both the error and success cases.
284215e2f34fSNate Lawson      */
284333c70d41SAndriy Gapon backout:
284415e2f34fSNate Lawson     if (slp_state >= ACPI_SS_GPE_SET) {
284515e2f34fSNate Lawson 	acpi_wake_prep_walk(state);
284615e2f34fSNate Lawson 	sc->acpi_sstate = ACPI_STATE_S0;
284715e2f34fSNate Lawson     }
2848e3b56b66SMitsuru IWASAKI     if (slp_state >= ACPI_SS_DEV_SUSPEND)
2849e3b56b66SMitsuru IWASAKI 	DEVICE_RESUME(root_bus);
2850f0a101b7SMitsuru IWASAKI     if (slp_state >= ACPI_SS_SLP_PREP)
285115e2f34fSNate Lawson 	AcpiLeaveSleepState(state);
2852a0a15716SJung-uk Kim     if (slp_state >= ACPI_SS_SLEPT) {
2853a0a15716SJung-uk Kim 	acpi_resync_clock(sc);
285415e2f34fSNate Lawson 	acpi_enable_fixed_events(sc);
2855a0a15716SJung-uk Kim     }
2856337744d9SJung-uk Kim     sc->acpi_next_sstate = 0;
285715e2f34fSNate Lawson 
2858a56fe095SJohn Baldwin     mtx_unlock(&Giant);
2859c66d2b38SJung-uk Kim 
286036a483bbSJung-uk Kim     if (smp_started) {
2861c66d2b38SJung-uk Kim 	thread_lock(curthread);
2862c66d2b38SJung-uk Kim 	sched_unbind(curthread);
2863c66d2b38SJung-uk Kim 	thread_unlock(curthread);
286436a483bbSJung-uk Kim     }
2865c66d2b38SJung-uk Kim 
28664a8fa6feSJung-uk Kim     EVENTHANDLER_INVOKE(power_resume);
28674a8fa6feSJung-uk Kim 
2868d42f0ad8SJung-uk Kim     /* Allow another sleep request after a while. */
2869d42f0ad8SJung-uk Kim     timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME);
2870d42f0ad8SJung-uk Kim 
2871d42f0ad8SJung-uk Kim     /* Run /etc/rc.resume after we are back. */
2872d42f0ad8SJung-uk Kim     if (devctl_process_running())
2873d42f0ad8SJung-uk Kim 	acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2874d42f0ad8SJung-uk Kim 
28750ae55423SMike Smith     return_ACPI_STATUS (status);
287615e32d5dSMike Smith }
287715e32d5dSMike Smith 
2878a0a15716SJung-uk Kim static void
28790755473bSJung-uk Kim acpi_resync_clock(struct acpi_softc *sc)
28800755473bSJung-uk Kim {
2881ebbed20dSAndriy Gapon #ifdef __amd64__
28820755473bSJung-uk Kim     if (!acpi_reset_clock)
28830755473bSJung-uk Kim 	return;
28840755473bSJung-uk Kim 
28850755473bSJung-uk Kim     /*
28860755473bSJung-uk Kim      * Warm up timecounter again and reset system clock.
28870755473bSJung-uk Kim      */
28880755473bSJung-uk Kim     (void)timecounter->tc_get_timecount(timecounter);
28890755473bSJung-uk Kim     (void)timecounter->tc_get_timecount(timecounter);
28900755473bSJung-uk Kim     inittodr(time_second + sc->acpi_sleep_delay);
2891a0a15716SJung-uk Kim #endif
28920755473bSJung-uk Kim }
28930755473bSJung-uk Kim 
2894e8b4d56eSNate Lawson /* Enable or disable the device's wake GPE. */
2895e8b4d56eSNate Lawson int
2896e8b4d56eSNate Lawson acpi_wake_set_enable(device_t dev, int enable)
2897e8b4d56eSNate Lawson {
2898e8b4d56eSNate Lawson     struct acpi_prw_data prw;
2899e8b4d56eSNate Lawson     ACPI_STATUS status;
2900e8b4d56eSNate Lawson     int flags;
2901e8b4d56eSNate Lawson 
2902d4b9ff91SNate Lawson     /* Make sure the device supports waking the system and get the GPE. */
29032be4e471SJung-uk Kim     if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2904e8b4d56eSNate Lawson 	return (ENXIO);
2905e8b4d56eSNate Lawson 
2906d4b9ff91SNate Lawson     flags = acpi_get_flags(dev);
2907e8b4d56eSNate Lawson     if (enable) {
29085a77b11bSJung-uk Kim 	status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
29095a77b11bSJung-uk Kim 	    ACPI_GPE_ENABLE);
2910e8b4d56eSNate Lawson 	if (ACPI_FAILURE(status)) {
2911e8b4d56eSNate Lawson 	    device_printf(dev, "enable wake failed\n");
2912e8b4d56eSNate Lawson 	    return (ENXIO);
2913e8b4d56eSNate Lawson 	}
2914d4b9ff91SNate Lawson 	acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
2915e8b4d56eSNate Lawson     } else {
29165a77b11bSJung-uk Kim 	status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
29175a77b11bSJung-uk Kim 	    ACPI_GPE_DISABLE);
2918e8b4d56eSNate Lawson 	if (ACPI_FAILURE(status)) {
2919e8b4d56eSNate Lawson 	    device_printf(dev, "disable wake failed\n");
2920e8b4d56eSNate Lawson 	    return (ENXIO);
2921e8b4d56eSNate Lawson 	}
2922d4b9ff91SNate Lawson 	acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
2923e8b4d56eSNate Lawson     }
2924e8b4d56eSNate Lawson 
2925e8b4d56eSNate Lawson     return (0);
2926e8b4d56eSNate Lawson }
2927e8b4d56eSNate Lawson 
2928d4b9ff91SNate Lawson static int
2929d4b9ff91SNate Lawson acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
2930e8b4d56eSNate Lawson {
2931e8b4d56eSNate Lawson     struct acpi_prw_data prw;
2932d4b9ff91SNate Lawson     device_t dev;
2933e8b4d56eSNate Lawson 
2934d4b9ff91SNate Lawson     /* Check that this is a wake-capable device and get its GPE. */
2935e8b4d56eSNate Lawson     if (acpi_parse_prw(handle, &prw) != 0)
2936e8b4d56eSNate Lawson 	return (ENXIO);
2937d4b9ff91SNate Lawson     dev = acpi_get_device(handle);
2938e8b4d56eSNate Lawson 
2939e8b4d56eSNate Lawson     /*
2940d4b9ff91SNate Lawson      * The destination sleep state must be less than (i.e., higher power)
2941d4b9ff91SNate Lawson      * or equal to the value specified by _PRW.  If this GPE cannot be
2942d4b9ff91SNate Lawson      * enabled for the next sleep state, then disable it.  If it can and
2943d4b9ff91SNate Lawson      * the user requested it be enabled, turn on any required power resources
2944d4b9ff91SNate Lawson      * and set _PSW.
2945e8b4d56eSNate Lawson      */
2946d4b9ff91SNate Lawson     if (sstate > prw.lowest_wake) {
29475a77b11bSJung-uk Kim 	AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
2948e8b4d56eSNate Lawson 	if (bootverbose)
2949d4b9ff91SNate Lawson 	    device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
2950d4b9ff91SNate Lawson 		acpi_name(handle), sstate);
2951d4b9ff91SNate Lawson     } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
2952d4b9ff91SNate Lawson 	acpi_pwr_wake_enable(handle, 1);
2953d4b9ff91SNate Lawson 	acpi_SetInteger(handle, "_PSW", 1);
2954d4b9ff91SNate Lawson 	if (bootverbose)
2955d4b9ff91SNate Lawson 	    device_printf(dev, "wake_prep enabled for %s (S%d)\n",
2956d4b9ff91SNate Lawson 		acpi_name(handle), sstate);
2957d4b9ff91SNate Lawson     }
2958cc85c78cSNate Lawson 
2959cc85c78cSNate Lawson     return (0);
2960e8b4d56eSNate Lawson }
2961e8b4d56eSNate Lawson 
2962d4b9ff91SNate Lawson static int
2963d4b9ff91SNate Lawson acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
2964cc85c78cSNate Lawson {
2965cc85c78cSNate Lawson     struct acpi_prw_data prw;
2966d4b9ff91SNate Lawson     device_t dev;
2967cc85c78cSNate Lawson 
2968cc85c78cSNate Lawson     /*
2969d4b9ff91SNate Lawson      * Check that this is a wake-capable device and get its GPE.  Return
2970d4b9ff91SNate Lawson      * now if the user didn't enable this device for wake.
2971cc85c78cSNate Lawson      */
2972d4b9ff91SNate Lawson     if (acpi_parse_prw(handle, &prw) != 0)
2973d4b9ff91SNate Lawson 	return (ENXIO);
2974d4b9ff91SNate Lawson     dev = acpi_get_device(handle);
2975d4b9ff91SNate Lawson     if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
2976d4b9ff91SNate Lawson 	return (0);
2977cc85c78cSNate Lawson 
2978d4b9ff91SNate Lawson     /*
2979d4b9ff91SNate Lawson      * If this GPE couldn't be enabled for the previous sleep state, it was
2980d4b9ff91SNate Lawson      * disabled before going to sleep so re-enable it.  If it was enabled,
2981d4b9ff91SNate Lawson      * clear _PSW and turn off any power resources it used.
2982d4b9ff91SNate Lawson      */
2983d4b9ff91SNate Lawson     if (sstate > prw.lowest_wake) {
29845a77b11bSJung-uk Kim 	AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
2985d4b9ff91SNate Lawson 	if (bootverbose)
2986d4b9ff91SNate Lawson 	    device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
2987d4b9ff91SNate Lawson     } else {
2988d4b9ff91SNate Lawson 	acpi_SetInteger(handle, "_PSW", 0);
2989d4b9ff91SNate Lawson 	acpi_pwr_wake_enable(handle, 0);
2990d4b9ff91SNate Lawson 	if (bootverbose)
2991d4b9ff91SNate Lawson 	    device_printf(dev, "run_prep cleaned up for %s\n",
2992d4b9ff91SNate Lawson 		acpi_name(handle));
2993d4b9ff91SNate Lawson     }
2994d4b9ff91SNate Lawson 
2995e8b4d56eSNate Lawson     return (0);
2996e8b4d56eSNate Lawson }
2997e8b4d56eSNate Lawson 
2998e8b4d56eSNate Lawson static ACPI_STATUS
2999d4b9ff91SNate Lawson acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
3000e8b4d56eSNate Lawson {
3001d4b9ff91SNate Lawson     int sstate;
3002e8b4d56eSNate Lawson 
3003d4b9ff91SNate Lawson     /* If suspending, run the sleep prep function, otherwise wake. */
3004d4b9ff91SNate Lawson     sstate = *(int *)context;
3005d4b9ff91SNate Lawson     if (AcpiGbl_SystemAwakeAndRunning)
3006d4b9ff91SNate Lawson 	acpi_wake_sleep_prep(handle, sstate);
3007d4b9ff91SNate Lawson     else
3008d4b9ff91SNate Lawson 	acpi_wake_run_prep(handle, sstate);
3009e8b4d56eSNate Lawson     return (AE_OK);
3010e8b4d56eSNate Lawson }
3011e8b4d56eSNate Lawson 
3012d4b9ff91SNate Lawson /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
3013e8b4d56eSNate Lawson static int
3014d4b9ff91SNate Lawson acpi_wake_prep_walk(int sstate)
3015e8b4d56eSNate Lawson {
3016e8b4d56eSNate Lawson     ACPI_HANDLE sb_handle;
3017e8b4d56eSNate Lawson 
3018e8b4d56eSNate Lawson     if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
3019d4b9ff91SNate Lawson 	AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
30202272d050SJung-uk Kim 	    acpi_wake_prep, NULL, &sstate, NULL);
3021e8b4d56eSNate Lawson     return (0);
3022e8b4d56eSNate Lawson }
3023e8b4d56eSNate Lawson 
302488a79fc0SNate Lawson /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
302588a79fc0SNate Lawson static int
302688a79fc0SNate Lawson acpi_wake_sysctl_walk(device_t dev)
302788a79fc0SNate Lawson {
302888a79fc0SNate Lawson     int error, i, numdevs;
302988a79fc0SNate Lawson     device_t *devlist;
303088a79fc0SNate Lawson     device_t child;
3031d4b9ff91SNate Lawson     ACPI_STATUS status;
303288a79fc0SNate Lawson 
303388a79fc0SNate Lawson     error = device_get_children(dev, &devlist, &numdevs);
30341c9ec538SNate Lawson     if (error != 0 || numdevs == 0) {
30351c9ec538SNate Lawson 	if (numdevs == 0)
30361c9ec538SNate Lawson 	    free(devlist, M_TEMP);
303788a79fc0SNate Lawson 	return (error);
30381c9ec538SNate Lawson     }
303988a79fc0SNate Lawson     for (i = 0; i < numdevs; i++) {
304088a79fc0SNate Lawson 	child = devlist[i];
3041d4b9ff91SNate Lawson 	acpi_wake_sysctl_walk(child);
304288a79fc0SNate Lawson 	if (!device_is_attached(child))
304388a79fc0SNate Lawson 	    continue;
3044d4b9ff91SNate Lawson 	status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
3045d4b9ff91SNate Lawson 	if (ACPI_SUCCESS(status)) {
304688a79fc0SNate Lawson 	    SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
304788a79fc0SNate Lawson 		SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
304888a79fc0SNate Lawson 		"wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
304988a79fc0SNate Lawson 		acpi_wake_set_sysctl, "I", "Device set to wake the system");
305088a79fc0SNate Lawson 	}
305188a79fc0SNate Lawson     }
305288a79fc0SNate Lawson     free(devlist, M_TEMP);
305388a79fc0SNate Lawson 
305488a79fc0SNate Lawson     return (0);
305588a79fc0SNate Lawson }
305688a79fc0SNate Lawson 
305788a79fc0SNate Lawson /* Enable or disable wake from userland. */
305888a79fc0SNate Lawson static int
305988a79fc0SNate Lawson acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
306088a79fc0SNate Lawson {
306188a79fc0SNate Lawson     int enable, error;
306288a79fc0SNate Lawson     device_t dev;
306388a79fc0SNate Lawson 
306488a79fc0SNate Lawson     dev = (device_t)arg1;
3065d4b9ff91SNate Lawson     enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
306688a79fc0SNate Lawson 
306788a79fc0SNate Lawson     error = sysctl_handle_int(oidp, &enable, 0, req);
306888a79fc0SNate Lawson     if (error != 0 || req->newptr == NULL)
306988a79fc0SNate Lawson 	return (error);
307088a79fc0SNate Lawson     if (enable != 0 && enable != 1)
307188a79fc0SNate Lawson 	return (EINVAL);
307288a79fc0SNate Lawson 
307388a79fc0SNate Lawson     return (acpi_wake_set_enable(dev, enable));
307488a79fc0SNate Lawson }
307588a79fc0SNate Lawson 
3076e8b4d56eSNate Lawson /* Parse a device's _PRW into a structure. */
3077d4b9ff91SNate Lawson int
3078e8b4d56eSNate Lawson acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
3079e8b4d56eSNate Lawson {
3080e8b4d56eSNate Lawson     ACPI_STATUS			status;
3081e8b4d56eSNate Lawson     ACPI_BUFFER			prw_buffer;
3082e8b4d56eSNate Lawson     ACPI_OBJECT			*res, *res2;
3083d4b9ff91SNate Lawson     int				error, i, power_count;
3084e8b4d56eSNate Lawson 
3085e8b4d56eSNate Lawson     if (h == NULL || prw == NULL)
3086e8b4d56eSNate Lawson 	return (EINVAL);
3087e8b4d56eSNate Lawson 
3088e8b4d56eSNate Lawson     /*
3089e8b4d56eSNate Lawson      * The _PRW object (7.2.9) is only required for devices that have the
3090e8b4d56eSNate Lawson      * ability to wake the system from a sleeping state.
3091e8b4d56eSNate Lawson      */
3092e8b4d56eSNate Lawson     error = EINVAL;
3093e8b4d56eSNate Lawson     prw_buffer.Pointer = NULL;
3094e8b4d56eSNate Lawson     prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
3095e8b4d56eSNate Lawson     status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
3096e8b4d56eSNate Lawson     if (ACPI_FAILURE(status))
3097e8b4d56eSNate Lawson 	return (ENOENT);
3098e8b4d56eSNate Lawson     res = (ACPI_OBJECT *)prw_buffer.Pointer;
3099e8b4d56eSNate Lawson     if (res == NULL)
3100e8b4d56eSNate Lawson 	return (ENOENT);
3101e8b4d56eSNate Lawson     if (!ACPI_PKG_VALID(res, 2))
3102e8b4d56eSNate Lawson 	goto out;
3103e8b4d56eSNate Lawson 
3104e8b4d56eSNate Lawson     /*
3105e8b4d56eSNate Lawson      * Element 1 of the _PRW object:
3106e8b4d56eSNate Lawson      * The lowest power system sleeping state that can be entered while still
3107e8b4d56eSNate Lawson      * providing wake functionality.  The sleeping state being entered must
3108e8b4d56eSNate Lawson      * be less than (i.e., higher power) or equal to this value.
3109e8b4d56eSNate Lawson      */
3110e8b4d56eSNate Lawson     if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
3111e8b4d56eSNate Lawson 	goto out;
3112e8b4d56eSNate Lawson 
3113e8b4d56eSNate Lawson     /*
3114e8b4d56eSNate Lawson      * Element 0 of the _PRW object:
3115e8b4d56eSNate Lawson      */
3116e8b4d56eSNate Lawson     switch (res->Package.Elements[0].Type) {
3117e8b4d56eSNate Lawson     case ACPI_TYPE_INTEGER:
3118e8b4d56eSNate Lawson 	/*
3119e8b4d56eSNate Lawson 	 * If the data type of this package element is numeric, then this
3120e8b4d56eSNate Lawson 	 * _PRW package element is the bit index in the GPEx_EN, in the
3121e8b4d56eSNate Lawson 	 * GPE blocks described in the FADT, of the enable bit that is
3122e8b4d56eSNate Lawson 	 * enabled for the wake event.
3123e8b4d56eSNate Lawson 	 */
3124e8b4d56eSNate Lawson 	prw->gpe_handle = NULL;
3125e8b4d56eSNate Lawson 	prw->gpe_bit = res->Package.Elements[0].Integer.Value;
3126e8b4d56eSNate Lawson 	error = 0;
3127e8b4d56eSNate Lawson 	break;
3128e8b4d56eSNate Lawson     case ACPI_TYPE_PACKAGE:
3129e8b4d56eSNate Lawson 	/*
3130e8b4d56eSNate Lawson 	 * If the data type of this package element is a package, then this
3131e8b4d56eSNate Lawson 	 * _PRW package element is itself a package containing two
3132e8b4d56eSNate Lawson 	 * elements.  The first is an object reference to the GPE Block
3133e8b4d56eSNate Lawson 	 * device that contains the GPE that will be triggered by the wake
3134e8b4d56eSNate Lawson 	 * event.  The second element is numeric and it contains the bit
3135e8b4d56eSNate Lawson 	 * index in the GPEx_EN, in the GPE Block referenced by the
3136e8b4d56eSNate Lawson 	 * first element in the package, of the enable bit that is enabled for
3137e8b4d56eSNate Lawson 	 * the wake event.
3138e8b4d56eSNate Lawson 	 *
3139e8b4d56eSNate Lawson 	 * For example, if this field is a package then it is of the form:
3140e8b4d56eSNate Lawson 	 * Package() {\_SB.PCI0.ISA.GPE, 2}
3141e8b4d56eSNate Lawson 	 */
3142e8b4d56eSNate Lawson 	res2 = &res->Package.Elements[0];
3143e8b4d56eSNate Lawson 	if (!ACPI_PKG_VALID(res2, 2))
3144e8b4d56eSNate Lawson 	    goto out;
3145e8b4d56eSNate Lawson 	prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
3146e8b4d56eSNate Lawson 	if (prw->gpe_handle == NULL)
3147e8b4d56eSNate Lawson 	    goto out;
3148e8b4d56eSNate Lawson 	if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
3149e8b4d56eSNate Lawson 	    goto out;
3150e8b4d56eSNate Lawson 	error = 0;
3151e8b4d56eSNate Lawson 	break;
3152e8b4d56eSNate Lawson     default:
3153e8b4d56eSNate Lawson 	goto out;
3154e8b4d56eSNate Lawson     }
3155e8b4d56eSNate Lawson 
3156d4b9ff91SNate Lawson     /* Elements 2 to N of the _PRW object are power resources. */
3157d4b9ff91SNate Lawson     power_count = res->Package.Count - 2;
3158d4b9ff91SNate Lawson     if (power_count > ACPI_PRW_MAX_POWERRES) {
3159d4b9ff91SNate Lawson 	printf("ACPI device %s has too many power resources\n", acpi_name(h));
3160d4b9ff91SNate Lawson 	power_count = 0;
3161d4b9ff91SNate Lawson     }
3162d4b9ff91SNate Lawson     prw->power_res_count = power_count;
3163d4b9ff91SNate Lawson     for (i = 0; i < power_count; i++)
3164d4b9ff91SNate Lawson 	prw->power_res[i] = res->Package.Elements[i];
3165e8b4d56eSNate Lawson 
3166e8b4d56eSNate Lawson out:
3167e8b4d56eSNate Lawson     if (prw_buffer.Pointer != NULL)
3168e8b4d56eSNate Lawson 	AcpiOsFree(prw_buffer.Pointer);
3169e8b4d56eSNate Lawson     return (error);
3170e8b4d56eSNate Lawson }
3171e8b4d56eSNate Lawson 
317215e32d5dSMike Smith /*
317315e32d5dSMike Smith  * ACPI Event Handlers
317415e32d5dSMike Smith  */
317515e32d5dSMike Smith 
317615e32d5dSMike Smith /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
317715e32d5dSMike Smith 
317815e32d5dSMike Smith static void
317915e32d5dSMike Smith acpi_system_eventhandler_sleep(void *arg, int state)
318015e32d5dSMike Smith {
31812d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
318200a30448SNate Lawson     int ret;
3183bee4aa4aSNate Lawson 
3184b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
318515e32d5dSMike Smith 
3186a0e73a12SJung-uk Kim     /* Check if button action is disabled or unknown. */
3187a0e73a12SJung-uk Kim     if (state == ACPI_STATE_UNKNOWN)
3188813d6dcaSNate Lawson 	return;
3189813d6dcaSNate Lawson 
319000a30448SNate Lawson     /* Request that the system prepare to enter the given suspend state. */
31912d0c82e8SJung-uk Kim     ret = acpi_ReqSleepState(sc, state);
319200a30448SNate Lawson     if (ret != 0)
31932d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
31942d0c82e8SJung-uk Kim 	    "request to enter state S%d failed (err %d)\n", state, ret);
3195bee4aa4aSNate Lawson 
31960ae55423SMike Smith     return_VOID;
319715e32d5dSMike Smith }
319815e32d5dSMike Smith 
319915e32d5dSMike Smith static void
320015e32d5dSMike Smith acpi_system_eventhandler_wakeup(void *arg, int state)
320115e32d5dSMike Smith {
3202bee4aa4aSNate Lawson 
3203b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
32040ae55423SMike Smith 
3205bee4aa4aSNate Lawson     /* Currently, nothing to do for wakeup. */
3206cb9b0d80SMike Smith 
32070ae55423SMike Smith     return_VOID;
320815e32d5dSMike Smith }
320915e32d5dSMike Smith 
321015e32d5dSMike Smith /*
321115e32d5dSMike Smith  * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
321215e32d5dSMike Smith  */
3213b5854f5fSJung-uk Kim static void
3214b5854f5fSJung-uk Kim acpi_invoke_sleep_eventhandler(void *context)
3215b5854f5fSJung-uk Kim {
3216b5854f5fSJung-uk Kim 
3217b5854f5fSJung-uk Kim     EVENTHANDLER_INVOKE(acpi_sleep_event, *(int *)context);
3218b5854f5fSJung-uk Kim }
3219b5854f5fSJung-uk Kim 
3220b5854f5fSJung-uk Kim static void
3221b5854f5fSJung-uk Kim acpi_invoke_wake_eventhandler(void *context)
3222b5854f5fSJung-uk Kim {
3223b5854f5fSJung-uk Kim 
3224b5854f5fSJung-uk Kim     EVENTHANDLER_INVOKE(acpi_wakeup_event, *(int *)context);
3225b5854f5fSJung-uk Kim }
3226b5854f5fSJung-uk Kim 
322715e32d5dSMike Smith UINT32
322833febf93SNate Lawson acpi_event_power_button_sleep(void *context)
322915e32d5dSMike Smith {
323015e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
323115e32d5dSMike Smith 
3232b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
32330ae55423SMike Smith 
3234b5854f5fSJung-uk Kim     if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3235b5854f5fSJung-uk Kim 	acpi_invoke_sleep_eventhandler, &sc->acpi_power_button_sx)))
3236b5854f5fSJung-uk Kim 	return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3237b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
323815e32d5dSMike Smith }
323915e32d5dSMike Smith 
324015e32d5dSMike Smith UINT32
324133febf93SNate Lawson acpi_event_power_button_wake(void *context)
324215e32d5dSMike Smith {
324315e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
324415e32d5dSMike Smith 
3245b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
32460ae55423SMike Smith 
3247b5854f5fSJung-uk Kim     if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3248b5854f5fSJung-uk Kim 	acpi_invoke_wake_eventhandler, &sc->acpi_power_button_sx)))
3249b5854f5fSJung-uk Kim 	return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3250b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
325115e32d5dSMike Smith }
325215e32d5dSMike Smith 
325315e32d5dSMike Smith UINT32
325433febf93SNate Lawson acpi_event_sleep_button_sleep(void *context)
325515e32d5dSMike Smith {
325615e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
325715e32d5dSMike Smith 
3258b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
32590ae55423SMike Smith 
3260b5854f5fSJung-uk Kim     if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3261b5854f5fSJung-uk Kim 	acpi_invoke_sleep_eventhandler, &sc->acpi_sleep_button_sx)))
3262b5854f5fSJung-uk Kim 	return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3263b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
326415e32d5dSMike Smith }
326515e32d5dSMike Smith 
326615e32d5dSMike Smith UINT32
326733febf93SNate Lawson acpi_event_sleep_button_wake(void *context)
326815e32d5dSMike Smith {
326915e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
327015e32d5dSMike Smith 
3271b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
32720ae55423SMike Smith 
3273b5854f5fSJung-uk Kim     if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3274b5854f5fSJung-uk Kim 	acpi_invoke_wake_eventhandler, &sc->acpi_sleep_button_sx)))
3275b5854f5fSJung-uk Kim 	return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3276b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
327715e32d5dSMike Smith }
327815e32d5dSMike Smith 
327915e32d5dSMike Smith /*
3280bee4aa4aSNate Lawson  * XXX This static buffer is suboptimal.  There is no locking so only
3281bee4aa4aSNate Lawson  * use this for single-threaded callers.
328215e32d5dSMike Smith  */
328315e32d5dSMike Smith char *
328415e32d5dSMike Smith acpi_name(ACPI_HANDLE handle)
328515e32d5dSMike Smith {
3286bee4aa4aSNate Lawson     ACPI_BUFFER buf;
3287bee4aa4aSNate Lawson     static char data[256];
328815e32d5dSMike Smith 
3289bee4aa4aSNate Lawson     buf.Length = sizeof(data);
3290bee4aa4aSNate Lawson     buf.Pointer = data;
3291cb9b0d80SMike Smith 
32920a9a1f44SNate Lawson     if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
3293bee4aa4aSNate Lawson 	return (data);
3294bee4aa4aSNate Lawson     return ("(unknown)");
329515e32d5dSMike Smith }
329615e32d5dSMike Smith 
329715e32d5dSMike Smith /*
329815e32d5dSMike Smith  * Debugging/bug-avoidance.  Avoid trying to fetch info on various
329915e32d5dSMike Smith  * parts of the namespace.
330015e32d5dSMike Smith  */
330115e32d5dSMike Smith int
330215e32d5dSMike Smith acpi_avoid(ACPI_HANDLE handle)
330315e32d5dSMike Smith {
33043c600cfbSJohn Baldwin     char	*cp, *env, *np;
330515e32d5dSMike Smith     int		len;
330615e32d5dSMike Smith 
330715e32d5dSMike Smith     np = acpi_name(handle);
330815e32d5dSMike Smith     if (*np == '\\')
330915e32d5dSMike Smith 	np++;
33103c600cfbSJohn Baldwin     if ((env = getenv("debug.acpi.avoid")) == NULL)
331115e32d5dSMike Smith 	return (0);
331215e32d5dSMike Smith 
3313be2b1797SNate Lawson     /* Scan the avoid list checking for a match */
33143c600cfbSJohn Baldwin     cp = env;
331515e32d5dSMike Smith     for (;;) {
3316bee4aa4aSNate Lawson 	while (*cp != 0 && isspace(*cp))
331715e32d5dSMike Smith 	    cp++;
331815e32d5dSMike Smith 	if (*cp == 0)
331915e32d5dSMike Smith 	    break;
332015e32d5dSMike Smith 	len = 0;
3321bee4aa4aSNate Lawson 	while (cp[len] != 0 && !isspace(cp[len]))
332215e32d5dSMike Smith 	    len++;
3323d786139cSMaxime Henrion 	if (!strncmp(cp, np, len)) {
33243c600cfbSJohn Baldwin 	    freeenv(env);
33250ae55423SMike Smith 	    return(1);
3326d786139cSMaxime Henrion 	}
33270ae55423SMike Smith 	cp += len;
33280ae55423SMike Smith     }
33293c600cfbSJohn Baldwin     freeenv(env);
3330be2b1797SNate Lawson 
33310ae55423SMike Smith     return (0);
33320ae55423SMike Smith }
33330ae55423SMike Smith 
33340ae55423SMike Smith /*
33350ae55423SMike Smith  * Debugging/bug-avoidance.  Disable ACPI subsystem components.
33360ae55423SMike Smith  */
33370ae55423SMike Smith int
33380ae55423SMike Smith acpi_disabled(char *subsys)
33390ae55423SMike Smith {
334078689b15SMaxime Henrion     char	*cp, *env;
33410ae55423SMike Smith     int		len;
33420ae55423SMike Smith 
33433184cf5aSNate Lawson     if ((env = getenv("debug.acpi.disabled")) == NULL)
33440ae55423SMike Smith 	return (0);
33453184cf5aSNate Lawson     if (strcmp(env, "all") == 0) {
334678689b15SMaxime Henrion 	freeenv(env);
33470ae55423SMike Smith 	return (1);
3348d786139cSMaxime Henrion     }
33490ae55423SMike Smith 
33503184cf5aSNate Lawson     /* Scan the disable list, checking for a match. */
335178689b15SMaxime Henrion     cp = env;
33520ae55423SMike Smith     for (;;) {
33533184cf5aSNate Lawson 	while (*cp != '\0' && isspace(*cp))
33540ae55423SMike Smith 	    cp++;
33553184cf5aSNate Lawson 	if (*cp == '\0')
33560ae55423SMike Smith 	    break;
33570ae55423SMike Smith 	len = 0;
33583184cf5aSNate Lawson 	while (cp[len] != '\0' && !isspace(cp[len]))
33590ae55423SMike Smith 	    len++;
33603184cf5aSNate Lawson 	if (strncmp(cp, subsys, len) == 0) {
336178689b15SMaxime Henrion 	    freeenv(env);
336215e32d5dSMike Smith 	    return (1);
3363d786139cSMaxime Henrion 	}
336415e32d5dSMike Smith 	cp += len;
336515e32d5dSMike Smith     }
336678689b15SMaxime Henrion     freeenv(env);
3367be2b1797SNate Lawson 
336815e32d5dSMike Smith     return (0);
336915e32d5dSMike Smith }
337015e32d5dSMike Smith 
337115e32d5dSMike Smith /*
337215e32d5dSMike Smith  * Control interface.
337315e32d5dSMike Smith  *
33740ae55423SMike Smith  * We multiplex ioctls for all participating ACPI devices here.  Individual
3375be2b1797SNate Lawson  * drivers wanting to be accessible via /dev/acpi should use the
3376be2b1797SNate Lawson  * register/deregister interface to make their handlers visible.
337715e32d5dSMike Smith  */
33780ae55423SMike Smith struct acpi_ioctl_hook
33790ae55423SMike Smith {
33800ae55423SMike Smith     TAILQ_ENTRY(acpi_ioctl_hook) link;
33810ae55423SMike Smith     u_long			 cmd;
3382be2b1797SNate Lawson     acpi_ioctl_fn		 fn;
33830ae55423SMike Smith     void			 *arg;
33840ae55423SMike Smith };
33850ae55423SMike Smith 
33860ae55423SMike Smith static TAILQ_HEAD(,acpi_ioctl_hook)	acpi_ioctl_hooks;
33870ae55423SMike Smith static int				acpi_ioctl_hooks_initted;
33880ae55423SMike Smith 
33890ae55423SMike Smith int
3390be2b1797SNate Lawson acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
33910ae55423SMike Smith {
33920ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
33930ae55423SMike Smith 
33940ae55423SMike Smith     if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
33950ae55423SMike Smith 	return (ENOMEM);
33960ae55423SMike Smith     hp->cmd = cmd;
33970ae55423SMike Smith     hp->fn = fn;
33980ae55423SMike Smith     hp->arg = arg;
339915e2f34fSNate Lawson 
340015e2f34fSNate Lawson     ACPI_LOCK(acpi);
34010ae55423SMike Smith     if (acpi_ioctl_hooks_initted == 0) {
34020ae55423SMike Smith 	TAILQ_INIT(&acpi_ioctl_hooks);
34030ae55423SMike Smith 	acpi_ioctl_hooks_initted = 1;
34040ae55423SMike Smith     }
34050ae55423SMike Smith     TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
340615e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
340715e2f34fSNate Lawson 
34080ae55423SMike Smith     return (0);
34090ae55423SMike Smith }
34100ae55423SMike Smith 
34110ae55423SMike Smith void
3412be2b1797SNate Lawson acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
34130ae55423SMike Smith {
34140ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
34150ae55423SMike Smith 
341615e2f34fSNate Lawson     ACPI_LOCK(acpi);
34170ae55423SMike Smith     TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
341815e2f34fSNate Lawson 	if (hp->cmd == cmd && hp->fn == fn)
34190ae55423SMike Smith 	    break;
34200ae55423SMike Smith 
34210ae55423SMike Smith     if (hp != NULL) {
34220ae55423SMike Smith 	TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
34230ae55423SMike Smith 	free(hp, M_ACPIDEV);
34240ae55423SMike Smith     }
342515e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
34260ae55423SMike Smith }
34270ae55423SMike Smith 
342815e32d5dSMike Smith static int
342900b4e54aSWarner Losh acpiopen(struct cdev *dev, int flag, int fmt, struct thread *td)
343015e32d5dSMike Smith {
343115e32d5dSMike Smith     return (0);
343215e32d5dSMike Smith }
343315e32d5dSMike Smith 
343415e32d5dSMike Smith static int
343500b4e54aSWarner Losh acpiclose(struct cdev *dev, int flag, int fmt, struct thread *td)
343615e32d5dSMike Smith {
343715e32d5dSMike Smith     return (0);
343815e32d5dSMike Smith }
343915e32d5dSMike Smith 
344015e32d5dSMike Smith static int
344100b4e54aSWarner Losh acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
344215e32d5dSMike Smith {
344315e32d5dSMike Smith     struct acpi_softc		*sc;
34440ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
3445bee4aa4aSNate Lawson     int				error, state;
344615e32d5dSMike Smith 
3447a2e35898SDavid E. O'Brien     error = 0;
3448a2e35898SDavid E. O'Brien     hp = NULL;
344915e32d5dSMike Smith     sc = dev->si_drv1;
345015e32d5dSMike Smith 
34510ae55423SMike Smith     /*
34520ae55423SMike Smith      * Scan the list of registered ioctls, looking for handlers.
34530ae55423SMike Smith      */
345415e2f34fSNate Lawson     ACPI_LOCK(acpi);
3455bee4aa4aSNate Lawson     if (acpi_ioctl_hooks_initted)
34560ae55423SMike Smith 	TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3457bee4aa4aSNate Lawson 	    if (hp->cmd == cmd)
3458bee4aa4aSNate Lawson 		break;
34590ae55423SMike Smith 	}
346015e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
3461bee4aa4aSNate Lawson     if (hp)
3462bee4aa4aSNate Lawson 	return (hp->fn(cmd, addr, hp->arg));
34630ae55423SMike Smith 
34640ae55423SMike Smith     /*
3465a89fcf28STakanori Watanabe      * Core ioctls are not permitted for non-writable user.
3466a89fcf28STakanori Watanabe      * Currently, other ioctls just fetch information.
3467a89fcf28STakanori Watanabe      * Not changing system behavior.
3468a89fcf28STakanori Watanabe      */
3469be2b1797SNate Lawson     if ((flag & FWRITE) == 0)
3470be2b1797SNate Lawson 	return (EPERM);
3471a89fcf28STakanori Watanabe 
3472be2b1797SNate Lawson     /* Core system ioctls. */
347315e32d5dSMike Smith     switch (cmd) {
347400a30448SNate Lawson     case ACPIIO_REQSLPSTATE:
347500a30448SNate Lawson 	state = *(int *)addr;
347600a30448SNate Lawson 	if (state != ACPI_STATE_S5)
3477a0e73a12SJung-uk Kim 	    return (acpi_ReqSleepState(sc, state));
3478a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n");
3479a0e73a12SJung-uk Kim 	error = EOPNOTSUPP;
348000a30448SNate Lawson 	break;
348100a30448SNate Lawson     case ACPIIO_ACKSLPSTATE:
348200a30448SNate Lawson 	error = *(int *)addr;
348300a30448SNate Lawson 	error = acpi_AckSleepState(sc->acpi_clone, error);
348400a30448SNate Lawson 	break;
348500a30448SNate Lawson     case ACPIIO_SETSLPSTATE:	/* DEPRECATED */
348615e32d5dSMike Smith 	state = *(int *)addr;
3487a0e73a12SJung-uk Kim 	if (state < ACPI_STATE_S0 || state > ACPI_S_STATES_MAX)
3488a0e73a12SJung-uk Kim 	    return (EINVAL);
3489a0e73a12SJung-uk Kim 	if (!acpi_sleep_states[state])
3490a0e73a12SJung-uk Kim 	    return (EOPNOTSUPP);
3491a0e73a12SJung-uk Kim 	if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
3492a0e73a12SJung-uk Kim 	    error = ENXIO;
349315e32d5dSMike Smith 	break;
349415e32d5dSMike Smith     default:
3495bee4aa4aSNate Lawson 	error = ENXIO;
349615e32d5dSMike Smith 	break;
349715e32d5dSMike Smith     }
3498917d44c8SMitsuru IWASAKI 
349915e32d5dSMike Smith     return (error);
350015e32d5dSMike Smith }
350115e32d5dSMike Smith 
35021d073b1dSJohn Baldwin static int
3503a0e73a12SJung-uk Kim acpi_sname2sstate(const char *sname)
3504a0e73a12SJung-uk Kim {
3505a0e73a12SJung-uk Kim     int sstate;
3506a0e73a12SJung-uk Kim 
3507a0e73a12SJung-uk Kim     if (toupper(sname[0]) == 'S') {
3508a0e73a12SJung-uk Kim 	sstate = sname[1] - '0';
3509a0e73a12SJung-uk Kim 	if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5 &&
3510a0e73a12SJung-uk Kim 	    sname[2] == '\0')
3511a0e73a12SJung-uk Kim 	    return (sstate);
3512a0e73a12SJung-uk Kim     } else if (strcasecmp(sname, "NONE") == 0)
3513a0e73a12SJung-uk Kim 	return (ACPI_STATE_UNKNOWN);
3514a0e73a12SJung-uk Kim     return (-1);
3515a0e73a12SJung-uk Kim }
3516a0e73a12SJung-uk Kim 
3517a0e73a12SJung-uk Kim static const char *
3518a0e73a12SJung-uk Kim acpi_sstate2sname(int sstate)
3519a0e73a12SJung-uk Kim {
3520a0e73a12SJung-uk Kim     static const char *snames[] = { "S0", "S1", "S2", "S3", "S4", "S5" };
3521a0e73a12SJung-uk Kim 
3522a0e73a12SJung-uk Kim     if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5)
3523a0e73a12SJung-uk Kim 	return (snames[sstate]);
3524a0e73a12SJung-uk Kim     else if (sstate == ACPI_STATE_UNKNOWN)
3525a0e73a12SJung-uk Kim 	return ("NONE");
3526a0e73a12SJung-uk Kim     return (NULL);
3527a0e73a12SJung-uk Kim }
3528a0e73a12SJung-uk Kim 
3529a0e73a12SJung-uk Kim static int
3530d75de536SMitsuru IWASAKI acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3531d75de536SMitsuru IWASAKI {
3532d75de536SMitsuru IWASAKI     int error;
3533bee4aa4aSNate Lawson     struct sbuf sb;
3534a0e73a12SJung-uk Kim     UINT8 state;
3535d75de536SMitsuru IWASAKI 
3536bee4aa4aSNate Lawson     sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3537a0e73a12SJung-uk Kim     for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
3538a0e73a12SJung-uk Kim 	if (acpi_sleep_states[state])
3539a0e73a12SJung-uk Kim 	    sbuf_printf(&sb, "%s ", acpi_sstate2sname(state));
3540bee4aa4aSNate Lawson     sbuf_trim(&sb);
3541bee4aa4aSNate Lawson     sbuf_finish(&sb);
3542bee4aa4aSNate Lawson     error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3543bee4aa4aSNate Lawson     sbuf_delete(&sb);
3544d75de536SMitsuru IWASAKI     return (error);
3545d75de536SMitsuru IWASAKI }
3546d75de536SMitsuru IWASAKI 
3547d75de536SMitsuru IWASAKI static int
35481d073b1dSJohn Baldwin acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
35491d073b1dSJohn Baldwin {
35501d073b1dSJohn Baldwin     char sleep_state[10];
3551a0e73a12SJung-uk Kim     int error, new_state, old_state;
35521d073b1dSJohn Baldwin 
3553a0e73a12SJung-uk Kim     old_state = *(int *)oidp->oid_arg1;
3554a0e73a12SJung-uk Kim     strlcpy(sleep_state, acpi_sstate2sname(old_state), sizeof(sleep_state));
35551d073b1dSJohn Baldwin     error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
35561d073b1dSJohn Baldwin     if (error == 0 && req->newptr != NULL) {
3557a0e73a12SJung-uk Kim 	new_state = acpi_sname2sstate(sleep_state);
3558a0e73a12SJung-uk Kim 	if (new_state < ACPI_STATE_S1)
3559a0e73a12SJung-uk Kim 	    return (EINVAL);
356054b43614SJung-uk Kim 	if (new_state < ACPI_S_STATE_COUNT && !acpi_sleep_states[new_state])
3561a0e73a12SJung-uk Kim 	    return (EOPNOTSUPP);
3562be2b1797SNate Lawson 	if (new_state != old_state)
3563a0e73a12SJung-uk Kim 	    *(int *)oidp->oid_arg1 = new_state;
35641d073b1dSJohn Baldwin     }
35651d073b1dSJohn Baldwin     return (error);
35661d073b1dSJohn Baldwin }
35671d073b1dSJohn Baldwin 
35689b937d48SNate Lawson /* Inform devctl(4) when we receive a Notify. */
35699b937d48SNate Lawson void
35709b937d48SNate Lawson acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
35719b937d48SNate Lawson {
35729b937d48SNate Lawson     char		notify_buf[16];
35739b937d48SNate Lawson     ACPI_BUFFER		handle_buf;
35749b937d48SNate Lawson     ACPI_STATUS		status;
35759b937d48SNate Lawson 
35769b937d48SNate Lawson     if (subsystem == NULL)
35779b937d48SNate Lawson 	return;
35789b937d48SNate Lawson 
35799b937d48SNate Lawson     handle_buf.Pointer = NULL;
35809b937d48SNate Lawson     handle_buf.Length = ACPI_ALLOCATE_BUFFER;
35819b937d48SNate Lawson     status = AcpiNsHandleToPathname(h, &handle_buf);
35829b937d48SNate Lawson     if (ACPI_FAILURE(status))
35839b937d48SNate Lawson 	return;
35849b937d48SNate Lawson     snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
35859b937d48SNate Lawson     devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
35869b937d48SNate Lawson     AcpiOsFree(handle_buf.Pointer);
35879b937d48SNate Lawson }
35889b937d48SNate Lawson 
358915e32d5dSMike Smith #ifdef ACPI_DEBUG
35900ae55423SMike Smith /*
35910ae55423SMike Smith  * Support for parsing debug options from the kernel environment.
35920ae55423SMike Smith  *
35930ae55423SMike Smith  * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
35940ae55423SMike Smith  * by specifying the names of the bits in the debug.acpi.layer and
35950ae55423SMike Smith  * debug.acpi.level environment variables.  Bits may be unset by
35960ae55423SMike Smith  * prefixing the bit name with !.
35970ae55423SMike Smith  */
359815e32d5dSMike Smith struct debugtag
359915e32d5dSMike Smith {
360015e32d5dSMike Smith     char	*name;
360115e32d5dSMike Smith     UINT32	value;
360215e32d5dSMike Smith };
360315e32d5dSMike Smith 
360415e32d5dSMike Smith static struct debugtag	dbg_layer[] = {
3605c5ba0be4SMike Smith     {"ACPI_UTILITIES",		ACPI_UTILITIES},
3606c5ba0be4SMike Smith     {"ACPI_HARDWARE",		ACPI_HARDWARE},
3607c5ba0be4SMike Smith     {"ACPI_EVENTS",		ACPI_EVENTS},
3608c5ba0be4SMike Smith     {"ACPI_TABLES",		ACPI_TABLES},
3609c5ba0be4SMike Smith     {"ACPI_NAMESPACE",		ACPI_NAMESPACE},
3610c5ba0be4SMike Smith     {"ACPI_PARSER",		ACPI_PARSER},
3611c5ba0be4SMike Smith     {"ACPI_DISPATCHER",		ACPI_DISPATCHER},
3612c5ba0be4SMike Smith     {"ACPI_EXECUTER",		ACPI_EXECUTER},
3613c5ba0be4SMike Smith     {"ACPI_RESOURCES",		ACPI_RESOURCES},
3614d62ab2f4SMitsuru IWASAKI     {"ACPI_CA_DEBUGGER",	ACPI_CA_DEBUGGER},
36154c1cdee6SMike Smith     {"ACPI_OS_SERVICES",	ACPI_OS_SERVICES},
3616d62ab2f4SMitsuru IWASAKI     {"ACPI_CA_DISASSEMBLER",	ACPI_CA_DISASSEMBLER},
3617297835bcSNate Lawson     {"ACPI_ALL_COMPONENTS",	ACPI_ALL_COMPONENTS},
36184c1cdee6SMike Smith 
3619c5ba0be4SMike Smith     {"ACPI_AC_ADAPTER",		ACPI_AC_ADAPTER},
3620c5ba0be4SMike Smith     {"ACPI_BATTERY",		ACPI_BATTERY},
36213184cf5aSNate Lawson     {"ACPI_BUS",		ACPI_BUS},
3622c5ba0be4SMike Smith     {"ACPI_BUTTON",		ACPI_BUTTON},
36233184cf5aSNate Lawson     {"ACPI_EC", 		ACPI_EC},
36243184cf5aSNate Lawson     {"ACPI_FAN",		ACPI_FAN},
36253184cf5aSNate Lawson     {"ACPI_POWERRES",		ACPI_POWERRES},
36264c1cdee6SMike Smith     {"ACPI_PROCESSOR",		ACPI_PROCESSOR},
3627cb9b0d80SMike Smith     {"ACPI_THERMAL",		ACPI_THERMAL},
36283184cf5aSNate Lawson     {"ACPI_TIMER",		ACPI_TIMER},
3629b53f2771SMike Smith     {"ACPI_ALL_DRIVERS",	ACPI_ALL_DRIVERS},
363015e32d5dSMike Smith     {NULL, 0}
363115e32d5dSMike Smith };
363215e32d5dSMike Smith 
363315e32d5dSMike Smith static struct debugtag dbg_level[] = {
36349501b603SJohn Baldwin     {"ACPI_LV_INIT",		ACPI_LV_INIT},
36354c1cdee6SMike Smith     {"ACPI_LV_DEBUG_OBJECT",	ACPI_LV_DEBUG_OBJECT},
36369501b603SJohn Baldwin     {"ACPI_LV_INFO",		ACPI_LV_INFO},
3637cc6455afSJung-uk Kim     {"ACPI_LV_REPAIR",		ACPI_LV_REPAIR},
36384c1cdee6SMike Smith     {"ACPI_LV_ALL_EXCEPTIONS",	ACPI_LV_ALL_EXCEPTIONS},
3639d62ab2f4SMitsuru IWASAKI 
3640d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 1 [Standard Trace Level] */
3641297835bcSNate Lawson     {"ACPI_LV_INIT_NAMES",	ACPI_LV_INIT_NAMES},
36424c1cdee6SMike Smith     {"ACPI_LV_PARSE",		ACPI_LV_PARSE},
36434c1cdee6SMike Smith     {"ACPI_LV_LOAD",		ACPI_LV_LOAD},
3644d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_DISPATCH",	ACPI_LV_DISPATCH},
36454c1cdee6SMike Smith     {"ACPI_LV_EXEC",		ACPI_LV_EXEC},
36464c1cdee6SMike Smith     {"ACPI_LV_NAMES",		ACPI_LV_NAMES},
36474c1cdee6SMike Smith     {"ACPI_LV_OPREGION",	ACPI_LV_OPREGION},
36484c1cdee6SMike Smith     {"ACPI_LV_BFIELD",		ACPI_LV_BFIELD},
36494c1cdee6SMike Smith     {"ACPI_LV_TABLES",		ACPI_LV_TABLES},
36504c1cdee6SMike Smith     {"ACPI_LV_VALUES",		ACPI_LV_VALUES},
36514c1cdee6SMike Smith     {"ACPI_LV_OBJECTS",		ACPI_LV_OBJECTS},
36524c1cdee6SMike Smith     {"ACPI_LV_RESOURCES",	ACPI_LV_RESOURCES},
36534c1cdee6SMike Smith     {"ACPI_LV_USER_REQUESTS",	ACPI_LV_USER_REQUESTS},
36544c1cdee6SMike Smith     {"ACPI_LV_PACKAGE",		ACPI_LV_PACKAGE},
3655d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY1",	ACPI_LV_VERBOSITY1},
3656d62ab2f4SMitsuru IWASAKI 
3657d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 2 [Function tracing and memory allocation] */
3658d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_ALLOCATIONS",	ACPI_LV_ALLOCATIONS},
3659d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_FUNCTIONS",	ACPI_LV_FUNCTIONS},
3660d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_OPTIMIZATIONS",	ACPI_LV_OPTIMIZATIONS},
3661d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY2",	ACPI_LV_VERBOSITY2},
36624c1cdee6SMike Smith     {"ACPI_LV_ALL",		ACPI_LV_ALL},
3663d62ab2f4SMitsuru IWASAKI 
3664d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3665d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_MUTEX",		ACPI_LV_MUTEX},
3666d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_THREADS",		ACPI_LV_THREADS},
3667d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_IO",		ACPI_LV_IO},
3668d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_INTERRUPTS",	ACPI_LV_INTERRUPTS},
3669d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY3",	ACPI_LV_VERBOSITY3},
3670d62ab2f4SMitsuru IWASAKI 
3671d62ab2f4SMitsuru IWASAKI     /* Exceptionally verbose output -- also used in the global "DebugLevel"  */
367298479b04SMitsuru IWASAKI     {"ACPI_LV_AML_DISASSEMBLE",	ACPI_LV_AML_DISASSEMBLE},
367398479b04SMitsuru IWASAKI     {"ACPI_LV_VERBOSE_INFO",	ACPI_LV_VERBOSE_INFO},
367498479b04SMitsuru IWASAKI     {"ACPI_LV_FULL_TABLES",	ACPI_LV_FULL_TABLES},
367598479b04SMitsuru IWASAKI     {"ACPI_LV_EVENTS",		ACPI_LV_EVENTS},
367698479b04SMitsuru IWASAKI     {"ACPI_LV_VERBOSE",		ACPI_LV_VERBOSE},
367715e32d5dSMike Smith     {NULL, 0}
367815e32d5dSMike Smith };
367915e32d5dSMike Smith 
368015e32d5dSMike Smith static void
368115e32d5dSMike Smith acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
368215e32d5dSMike Smith {
368315e32d5dSMike Smith     char	*ep;
368415e32d5dSMike Smith     int		i, l;
36850ae55423SMike Smith     int		set;
368615e32d5dSMike Smith 
368715e32d5dSMike Smith     while (*cp) {
368815e32d5dSMike Smith 	if (isspace(*cp)) {
368915e32d5dSMike Smith 	    cp++;
369015e32d5dSMike Smith 	    continue;
369115e32d5dSMike Smith 	}
369215e32d5dSMike Smith 	ep = cp;
369315e32d5dSMike Smith 	while (*ep && !isspace(*ep))
369415e32d5dSMike Smith 	    ep++;
36950ae55423SMike Smith 	if (*cp == '!') {
36960ae55423SMike Smith 	    set = 0;
36970ae55423SMike Smith 	    cp++;
36980ae55423SMike Smith 	    if (cp == ep)
36990ae55423SMike Smith 		continue;
37000ae55423SMike Smith 	} else {
37010ae55423SMike Smith 	    set = 1;
37020ae55423SMike Smith 	}
370315e32d5dSMike Smith 	l = ep - cp;
370415e32d5dSMike Smith 	for (i = 0; tag[i].name != NULL; i++) {
370515e32d5dSMike Smith 	    if (!strncmp(cp, tag[i].name, l)) {
3706be2b1797SNate Lawson 		if (set)
370715e32d5dSMike Smith 		    *flag |= tag[i].value;
3708be2b1797SNate Lawson 		else
37090ae55423SMike Smith 		    *flag &= ~tag[i].value;
371015e32d5dSMike Smith 	    }
371115e32d5dSMike Smith 	}
371215e32d5dSMike Smith 	cp = ep;
371315e32d5dSMike Smith     }
371415e32d5dSMike Smith }
371515e32d5dSMike Smith 
371615e32d5dSMike Smith static void
37172a4ac806SMike Smith acpi_set_debugging(void *junk)
371815e32d5dSMike Smith {
37197e639165SNate Lawson     char	*layer, *level;
372015e32d5dSMike Smith 
37211d7b121cSNate Lawson     if (cold) {
37220ae55423SMike Smith 	AcpiDbgLayer = 0;
37230ae55423SMike Smith 	AcpiDbgLevel = 0;
37241d7b121cSNate Lawson     }
37251d7b121cSNate Lawson 
37267e639165SNate Lawson     layer = getenv("debug.acpi.layer");
37277e639165SNate Lawson     level = getenv("debug.acpi.level");
37287e639165SNate Lawson     if (layer == NULL && level == NULL)
37297e639165SNate Lawson 	return;
37300ae55423SMike Smith 
37317e639165SNate Lawson     printf("ACPI set debug");
37327e639165SNate Lawson     if (layer != NULL) {
37337e639165SNate Lawson 	if (strcmp("NONE", layer) != 0)
37347e639165SNate Lawson 	    printf(" layer '%s'", layer);
37357e639165SNate Lawson 	acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
37367e639165SNate Lawson 	freeenv(layer);
37371d7b121cSNate Lawson     }
37387e639165SNate Lawson     if (level != NULL) {
37397e639165SNate Lawson 	if (strcmp("NONE", level) != 0)
37407e639165SNate Lawson 	    printf(" level '%s'", level);
37417e639165SNate Lawson 	acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
37427e639165SNate Lawson 	freeenv(level);
37437e639165SNate Lawson     }
37447e639165SNate Lawson     printf("\n");
374515e32d5dSMike Smith }
3746bee4aa4aSNate Lawson 
3747be2b1797SNate Lawson SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3748be2b1797SNate Lawson 	NULL);
37491d7b121cSNate Lawson 
37501d7b121cSNate Lawson static int
37511d7b121cSNate Lawson acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
37521d7b121cSNate Lawson {
375354f6bca0SNate Lawson     int		 error, *dbg;
37541d7b121cSNate Lawson     struct	 debugtag *tag;
375554f6bca0SNate Lawson     struct	 sbuf sb;
37561d7b121cSNate Lawson 
375754f6bca0SNate Lawson     if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
375854f6bca0SNate Lawson 	return (ENOMEM);
37591d7b121cSNate Lawson     if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
37601d7b121cSNate Lawson 	tag = &dbg_layer[0];
37611d7b121cSNate Lawson 	dbg = &AcpiDbgLayer;
37621d7b121cSNate Lawson     } else {
37631d7b121cSNate Lawson 	tag = &dbg_level[0];
37641d7b121cSNate Lawson 	dbg = &AcpiDbgLevel;
37651d7b121cSNate Lawson     }
37661d7b121cSNate Lawson 
37671d7b121cSNate Lawson     /* Get old values if this is a get request. */
376815e2f34fSNate Lawson     ACPI_SERIAL_BEGIN(acpi);
37691d7b121cSNate Lawson     if (*dbg == 0) {
377054f6bca0SNate Lawson 	sbuf_cpy(&sb, "NONE");
37711d7b121cSNate Lawson     } else if (req->newptr == NULL) {
37721d7b121cSNate Lawson 	for (; tag->name != NULL; tag++) {
377354f6bca0SNate Lawson 	    if ((*dbg & tag->value) == tag->value)
377454f6bca0SNate Lawson 		sbuf_printf(&sb, "%s ", tag->name);
37751d7b121cSNate Lawson 	}
37761d7b121cSNate Lawson     }
377754f6bca0SNate Lawson     sbuf_trim(&sb);
377854f6bca0SNate Lawson     sbuf_finish(&sb);
37791d7b121cSNate Lawson 
37807e639165SNate Lawson     /* Copy out the old values to the user. */
37817e639165SNate Lawson     error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
378254f6bca0SNate Lawson     sbuf_delete(&sb);
37831d7b121cSNate Lawson 
37841d7b121cSNate Lawson     /* If the user is setting a string, parse it. */
37851d7b121cSNate Lawson     if (error == 0 && req->newptr != NULL) {
37861d7b121cSNate Lawson 	*dbg = 0;
37871d7b121cSNate Lawson 	setenv((char *)oidp->oid_arg1, (char *)req->newptr);
37881d7b121cSNate Lawson 	acpi_set_debugging(NULL);
37891d7b121cSNate Lawson     }
379015e2f34fSNate Lawson     ACPI_SERIAL_END(acpi);
37911d7b121cSNate Lawson 
37921d7b121cSNate Lawson     return (error);
37931d7b121cSNate Lawson }
3794bee4aa4aSNate Lawson 
37951d7b121cSNate Lawson SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
37961d7b121cSNate Lawson 	    "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
37971d7b121cSNate Lawson SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
37981d7b121cSNate Lawson 	    "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3799bee4aa4aSNate Lawson #endif /* ACPI_DEBUG */
3800f9390180SMitsuru IWASAKI 
3801f9390180SMitsuru IWASAKI static int
38022a18c71dSJung-uk Kim acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS)
38032a18c71dSJung-uk Kim {
38042a18c71dSJung-uk Kim 	int	error;
38052a18c71dSJung-uk Kim 	int	old;
38062a18c71dSJung-uk Kim 
38072a18c71dSJung-uk Kim 	old = acpi_debug_objects;
38082a18c71dSJung-uk Kim 	error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req);
38092a18c71dSJung-uk Kim 	if (error != 0 || req->newptr == NULL)
38102a18c71dSJung-uk Kim 		return (error);
38112a18c71dSJung-uk Kim 	if (old == acpi_debug_objects || (old && acpi_debug_objects))
38122a18c71dSJung-uk Kim 		return (0);
38132a18c71dSJung-uk Kim 
38142a18c71dSJung-uk Kim 	ACPI_SERIAL_BEGIN(acpi);
38152a18c71dSJung-uk Kim 	AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
38162a18c71dSJung-uk Kim 	ACPI_SERIAL_END(acpi);
38172a18c71dSJung-uk Kim 
38182a18c71dSJung-uk Kim 	return (0);
38192a18c71dSJung-uk Kim }
38202a18c71dSJung-uk Kim 
38212a18c71dSJung-uk Kim static int
3822ae19af49SJung-uk Kim acpi_parse_interfaces(char *str, struct acpi_interface *iface)
3823ae19af49SJung-uk Kim {
3824ae19af49SJung-uk Kim 	char *p;
3825ae19af49SJung-uk Kim 	size_t len;
3826ae19af49SJung-uk Kim 	int i, j;
3827ae19af49SJung-uk Kim 
3828ae19af49SJung-uk Kim 	p = str;
3829ae19af49SJung-uk Kim 	while (isspace(*p) || *p == ',')
3830ae19af49SJung-uk Kim 		p++;
3831ae19af49SJung-uk Kim 	len = strlen(p);
3832ae19af49SJung-uk Kim 	if (len == 0)
3833ae19af49SJung-uk Kim 		return (0);
3834ae19af49SJung-uk Kim 	p = strdup(p, M_TEMP);
3835ae19af49SJung-uk Kim 	for (i = 0; i < len; i++)
3836ae19af49SJung-uk Kim 		if (p[i] == ',')
3837ae19af49SJung-uk Kim 			p[i] = '\0';
3838ae19af49SJung-uk Kim 	i = j = 0;
3839ae19af49SJung-uk Kim 	while (i < len)
3840ae19af49SJung-uk Kim 		if (isspace(p[i]) || p[i] == '\0')
3841ae19af49SJung-uk Kim 			i++;
3842ae19af49SJung-uk Kim 		else {
3843ae19af49SJung-uk Kim 			i += strlen(p + i) + 1;
3844ae19af49SJung-uk Kim 			j++;
3845ae19af49SJung-uk Kim 		}
3846ae19af49SJung-uk Kim 	if (j == 0) {
3847ae19af49SJung-uk Kim 		free(p, M_TEMP);
3848ae19af49SJung-uk Kim 		return (0);
3849ae19af49SJung-uk Kim 	}
3850ae19af49SJung-uk Kim 	iface->data = malloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK);
3851ae19af49SJung-uk Kim 	iface->num = j;
3852ae19af49SJung-uk Kim 	i = j = 0;
3853ae19af49SJung-uk Kim 	while (i < len)
3854ae19af49SJung-uk Kim 		if (isspace(p[i]) || p[i] == '\0')
3855ae19af49SJung-uk Kim 			i++;
3856ae19af49SJung-uk Kim 		else {
3857ae19af49SJung-uk Kim 			iface->data[j] = p + i;
3858ae19af49SJung-uk Kim 			i += strlen(p + i) + 1;
3859ae19af49SJung-uk Kim 			j++;
3860ae19af49SJung-uk Kim 		}
3861ae19af49SJung-uk Kim 
3862ae19af49SJung-uk Kim 	return (j);
3863ae19af49SJung-uk Kim }
3864ae19af49SJung-uk Kim 
3865ae19af49SJung-uk Kim static void
3866ae19af49SJung-uk Kim acpi_free_interfaces(struct acpi_interface *iface)
3867ae19af49SJung-uk Kim {
3868ae19af49SJung-uk Kim 
3869ae19af49SJung-uk Kim 	free(iface->data[0], M_TEMP);
3870ae19af49SJung-uk Kim 	free(iface->data, M_TEMP);
3871ae19af49SJung-uk Kim }
3872ae19af49SJung-uk Kim 
3873ae19af49SJung-uk Kim static void
3874ae19af49SJung-uk Kim acpi_reset_interfaces(device_t dev)
3875ae19af49SJung-uk Kim {
3876ae19af49SJung-uk Kim 	struct acpi_interface list;
3877ae19af49SJung-uk Kim 	ACPI_STATUS status;
3878ae19af49SJung-uk Kim 	int i;
3879ae19af49SJung-uk Kim 
3880ae19af49SJung-uk Kim 	if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) {
3881ae19af49SJung-uk Kim 		for (i = 0; i < list.num; i++) {
3882ae19af49SJung-uk Kim 			status = AcpiInstallInterface(list.data[i]);
3883ae19af49SJung-uk Kim 			if (ACPI_FAILURE(status))
3884ae19af49SJung-uk Kim 				device_printf(dev,
3885ae19af49SJung-uk Kim 				    "failed to install _OSI(\"%s\"): %s\n",
3886ae19af49SJung-uk Kim 				    list.data[i], AcpiFormatException(status));
3887ae19af49SJung-uk Kim 			else if (bootverbose)
3888ae19af49SJung-uk Kim 				device_printf(dev, "installed _OSI(\"%s\")\n",
3889ae19af49SJung-uk Kim 				    list.data[i]);
3890ae19af49SJung-uk Kim 		}
3891ae19af49SJung-uk Kim 		acpi_free_interfaces(&list);
3892ae19af49SJung-uk Kim 	}
3893ae19af49SJung-uk Kim 	if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) {
3894ae19af49SJung-uk Kim 		for (i = 0; i < list.num; i++) {
3895ae19af49SJung-uk Kim 			status = AcpiRemoveInterface(list.data[i]);
3896ae19af49SJung-uk Kim 			if (ACPI_FAILURE(status))
3897ae19af49SJung-uk Kim 				device_printf(dev,
3898ae19af49SJung-uk Kim 				    "failed to remove _OSI(\"%s\"): %s\n",
3899ae19af49SJung-uk Kim 				    list.data[i], AcpiFormatException(status));
3900ae19af49SJung-uk Kim 			else if (bootverbose)
3901ae19af49SJung-uk Kim 				device_printf(dev, "removed _OSI(\"%s\")\n",
3902ae19af49SJung-uk Kim 				    list.data[i]);
3903ae19af49SJung-uk Kim 		}
3904ae19af49SJung-uk Kim 		acpi_free_interfaces(&list);
3905ae19af49SJung-uk Kim 	}
3906ae19af49SJung-uk Kim }
3907ae19af49SJung-uk Kim 
3908ae19af49SJung-uk Kim static int
3909f9390180SMitsuru IWASAKI acpi_pm_func(u_long cmd, void *arg, ...)
3910f9390180SMitsuru IWASAKI {
3911f9390180SMitsuru IWASAKI 	int	state, acpi_state;
3912f9390180SMitsuru IWASAKI 	int	error;
3913f9390180SMitsuru IWASAKI 	struct	acpi_softc *sc;
3914f9390180SMitsuru IWASAKI 	va_list	ap;
3915f9390180SMitsuru IWASAKI 
3916f9390180SMitsuru IWASAKI 	error = 0;
3917f9390180SMitsuru IWASAKI 	switch (cmd) {
3918f9390180SMitsuru IWASAKI 	case POWER_CMD_SUSPEND:
3919f9390180SMitsuru IWASAKI 		sc = (struct acpi_softc *)arg;
3920f9390180SMitsuru IWASAKI 		if (sc == NULL) {
3921f9390180SMitsuru IWASAKI 			error = EINVAL;
3922f9390180SMitsuru IWASAKI 			goto out;
3923f9390180SMitsuru IWASAKI 		}
3924f9390180SMitsuru IWASAKI 
3925f9390180SMitsuru IWASAKI 		va_start(ap, arg);
3926f9390180SMitsuru IWASAKI 		state = va_arg(ap, int);
3927f9390180SMitsuru IWASAKI 		va_end(ap);
3928f9390180SMitsuru IWASAKI 
3929f9390180SMitsuru IWASAKI 		switch (state) {
3930f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_STANDBY:
3931f9390180SMitsuru IWASAKI 			acpi_state = sc->acpi_standby_sx;
3932f9390180SMitsuru IWASAKI 			break;
3933f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_SUSPEND:
3934f9390180SMitsuru IWASAKI 			acpi_state = sc->acpi_suspend_sx;
3935f9390180SMitsuru IWASAKI 			break;
3936f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_HIBERNATE:
3937f9390180SMitsuru IWASAKI 			acpi_state = ACPI_STATE_S4;
3938f9390180SMitsuru IWASAKI 			break;
3939f9390180SMitsuru IWASAKI 		default:
3940f9390180SMitsuru IWASAKI 			error = EINVAL;
3941f9390180SMitsuru IWASAKI 			goto out;
3942f9390180SMitsuru IWASAKI 		}
3943f9390180SMitsuru IWASAKI 
394400a30448SNate Lawson 		if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
394500a30448SNate Lawson 			error = ENXIO;
3946f9390180SMitsuru IWASAKI 		break;
3947f9390180SMitsuru IWASAKI 	default:
3948f9390180SMitsuru IWASAKI 		error = EINVAL;
3949f9390180SMitsuru IWASAKI 		goto out;
3950f9390180SMitsuru IWASAKI 	}
3951f9390180SMitsuru IWASAKI 
3952f9390180SMitsuru IWASAKI out:
3953f9390180SMitsuru IWASAKI 	return (error);
3954f9390180SMitsuru IWASAKI }
3955f9390180SMitsuru IWASAKI 
3956f9390180SMitsuru IWASAKI static void
3957f9390180SMitsuru IWASAKI acpi_pm_register(void *arg)
3958f9390180SMitsuru IWASAKI {
3959be2b1797SNate Lawson     if (!cold || resource_disabled("acpi", 0))
39606c407052SMitsuru IWASAKI 	return;
3961f9390180SMitsuru IWASAKI 
3962f9390180SMitsuru IWASAKI     power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3963f9390180SMitsuru IWASAKI }
3964f9390180SMitsuru IWASAKI 
3965f9390180SMitsuru IWASAKI SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);
3966