xref: /freebsd/sys/dev/acpica/acpi.c (revision ad73b301735baec2ce4729a1bedbdad932156d22)
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;
96fadf3fb9SJohn Baldwin struct callout	acpi_sleep_timer;
97cb9b0d80SMike Smith 
9889fb5af8SNate Lawson /* Bitmap of device quirks. */
9989fb5af8SNate Lawson int		acpi_quirks;
10089fb5af8SNate Lawson 
101a0e73a12SJung-uk Kim /* Supported sleep states. */
102a0e73a12SJung-uk Kim static BOOLEAN	acpi_sleep_states[ACPI_S_STATE_COUNT];
103a0e73a12SJung-uk Kim 
10464de8019SJohn Baldwin static void	acpi_lookup(void *arg, const char *name, device_t *dev);
1056d63101aSMike Smith static int	acpi_modevent(struct module *mod, int event, void *junk);
10615e32d5dSMike Smith static int	acpi_probe(device_t dev);
10715e32d5dSMike Smith static int	acpi_attach(device_t dev);
10810ce62b9SNate Lawson static int	acpi_suspend(device_t dev);
10910ce62b9SNate Lawson static int	acpi_resume(device_t dev);
110169b539aSNate Lawson static int	acpi_shutdown(device_t dev);
1113d844eddSAndriy Gapon static device_t	acpi_add_child(device_t bus, u_int order, const char *name,
112be2b1797SNate Lawson 			int unit);
11315e32d5dSMike Smith static int	acpi_print_child(device_t bus, device_t child);
11410ce62b9SNate Lawson static void	acpi_probe_nomatch(device_t bus, device_t child);
11510ce62b9SNate Lawson static void	acpi_driver_added(device_t dev, driver_t *driver);
116be2b1797SNate Lawson static int	acpi_read_ivar(device_t dev, device_t child, int index,
117be2b1797SNate Lawson 			uintptr_t *result);
118be2b1797SNate Lawson static int	acpi_write_ivar(device_t dev, device_t child, int index,
119be2b1797SNate Lawson 			uintptr_t value);
12091233413SNate Lawson static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
121ea233199SJohn Baldwin static void	acpi_reserve_resources(device_t dev);
122adad4744SNate Lawson static int	acpi_sysres_alloc(device_t dev);
123ea233199SJohn Baldwin static int	acpi_set_resource(device_t dev, device_t child, int type,
1242dd1bdf1SJustin Hibbits 			int rid, rman_res_t start, rman_res_t count);
125be2b1797SNate Lawson static struct resource *acpi_alloc_resource(device_t bus, device_t child,
1262dd1bdf1SJustin Hibbits 			int type, int *rid, rman_res_t start, rman_res_t end,
1272dd1bdf1SJustin Hibbits 			rman_res_t count, u_int flags);
128049dc0d1SJohn Baldwin static int	acpi_adjust_resource(device_t bus, device_t child, int type,
1292dd1bdf1SJustin Hibbits 			struct resource *r, rman_res_t start, rman_res_t end);
130be2b1797SNate Lawson static int	acpi_release_resource(device_t bus, device_t child, int type,
131be2b1797SNate Lawson 			int rid, struct resource *r);
1328b28b622SNate Lawson static void	acpi_delete_resource(device_t bus, device_t child, int type,
1338b28b622SNate Lawson 		    int rid);
1341e4925e8SNate Lawson static uint32_t	acpi_isa_get_logicalid(device_t dev);
1351e4925e8SNate Lawson static int	acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
136ce619b2eSNate Lawson static char	*acpi_device_id_probe(device_t bus, device_t dev, char **ids);
137ce619b2eSNate Lawson static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
138ce619b2eSNate Lawson 		    ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
139ce619b2eSNate Lawson 		    ACPI_BUFFER *ret);
140df8d2a32SNate Lawson static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
141df8d2a32SNate Lawson 		    void *context, void **retval);
142df8d2a32SNate Lawson static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
143df8d2a32SNate Lawson 		    int max_depth, acpi_scan_cb_t user_fn, void *arg);
144a7a3177fSJung-uk Kim static int	acpi_set_powerstate(device_t child, int state);
145be2b1797SNate Lawson static int	acpi_isa_pnp_probe(device_t bus, device_t child,
146be2b1797SNate Lawson 		    struct isa_pnp_id *ids);
14715e32d5dSMike Smith static void	acpi_probe_children(device_t bus);
148d227204dSJohn Baldwin static void	acpi_probe_order(ACPI_HANDLE handle, int *order);
149be2b1797SNate Lawson static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
150be2b1797SNate Lawson 		    void *context, void **status);
151a0e73a12SJung-uk Kim static void	acpi_sleep_enable(void *arg);
152a0e73a12SJung-uk Kim static ACPI_STATUS acpi_sleep_disable(struct acpi_softc *sc);
15300a30448SNate Lawson static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
15415e32d5dSMike Smith static void	acpi_shutdown_final(void *arg, int howto);
15513d4f7baSMitsuru IWASAKI static void	acpi_enable_fixed_events(struct acpi_softc *sc);
156183c8af3SJohn Baldwin static BOOLEAN	acpi_has_hid(ACPI_HANDLE handle);
157a0a15716SJung-uk Kim static void	acpi_resync_clock(struct acpi_softc *sc);
158d4b9ff91SNate Lawson static int	acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
159d4b9ff91SNate Lawson static int	acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
160d4b9ff91SNate Lawson static int	acpi_wake_prep_walk(int sstate);
16188a79fc0SNate Lawson static int	acpi_wake_sysctl_walk(device_t dev);
16288a79fc0SNate Lawson static int	acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
16315e32d5dSMike Smith static void	acpi_system_eventhandler_sleep(void *arg, int state);
16415e32d5dSMike Smith static void	acpi_system_eventhandler_wakeup(void *arg, int state);
165a0e73a12SJung-uk Kim static int	acpi_sname2sstate(const char *sname);
166a0e73a12SJung-uk Kim static const char *acpi_sstate2sname(int sstate);
167d75de536SMitsuru IWASAKI static int	acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
1681d073b1dSJohn Baldwin static int	acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
1692a18c71dSJung-uk Kim static int	acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS);
170f9390180SMitsuru IWASAKI static int	acpi_pm_func(u_long cmd, void *arg, ...);
171879d6c23STakanori Watanabe static int	acpi_child_location_str_method(device_t acdev, device_t child,
172879d6c23STakanori Watanabe 					       char *buf, size_t buflen);
173879d6c23STakanori Watanabe static int	acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
174879d6c23STakanori Watanabe 					      char *buf, size_t buflen);
175d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
176d320e05cSJohn Baldwin static void	acpi_enable_pcie(void);
177d320e05cSJohn Baldwin #endif
1780d484d24SJohn Baldwin static void	acpi_hint_device_unit(device_t acdev, device_t child,
1790d484d24SJohn Baldwin 		    const char *name, int *unitp);
180ae19af49SJung-uk Kim static void	acpi_reset_interfaces(device_t dev);
181879d6c23STakanori Watanabe 
18215e32d5dSMike Smith static device_method_t acpi_methods[] = {
18315e32d5dSMike Smith     /* Device interface */
18415e32d5dSMike Smith     DEVMETHOD(device_probe,		acpi_probe),
18515e32d5dSMike Smith     DEVMETHOD(device_attach,		acpi_attach),
186169b539aSNate Lawson     DEVMETHOD(device_shutdown,		acpi_shutdown),
18756a70eadSNate Lawson     DEVMETHOD(device_detach,		bus_generic_detach),
18810ce62b9SNate Lawson     DEVMETHOD(device_suspend,		acpi_suspend),
18910ce62b9SNate Lawson     DEVMETHOD(device_resume,		acpi_resume),
19015e32d5dSMike Smith 
19115e32d5dSMike Smith     /* Bus interface */
19215e32d5dSMike Smith     DEVMETHOD(bus_add_child,		acpi_add_child),
19315e32d5dSMike Smith     DEVMETHOD(bus_print_child,		acpi_print_child),
19410ce62b9SNate Lawson     DEVMETHOD(bus_probe_nomatch,	acpi_probe_nomatch),
19510ce62b9SNate Lawson     DEVMETHOD(bus_driver_added,		acpi_driver_added),
19615e32d5dSMike Smith     DEVMETHOD(bus_read_ivar,		acpi_read_ivar),
19715e32d5dSMike Smith     DEVMETHOD(bus_write_ivar,		acpi_write_ivar),
19891233413SNate Lawson     DEVMETHOD(bus_get_resource_list,	acpi_get_rlist),
199ea233199SJohn Baldwin     DEVMETHOD(bus_set_resource,		acpi_set_resource),
20091233413SNate Lawson     DEVMETHOD(bus_get_resource,		bus_generic_rl_get_resource),
20115e32d5dSMike Smith     DEVMETHOD(bus_alloc_resource,	acpi_alloc_resource),
202049dc0d1SJohn Baldwin     DEVMETHOD(bus_adjust_resource,	acpi_adjust_resource),
20315e32d5dSMike Smith     DEVMETHOD(bus_release_resource,	acpi_release_resource),
2048b28b622SNate Lawson     DEVMETHOD(bus_delete_resource,	acpi_delete_resource),
205879d6c23STakanori Watanabe     DEVMETHOD(bus_child_pnpinfo_str,	acpi_child_pnpinfo_str_method),
206879d6c23STakanori Watanabe     DEVMETHOD(bus_child_location_str,	acpi_child_location_str_method),
20715e32d5dSMike Smith     DEVMETHOD(bus_activate_resource,	bus_generic_activate_resource),
20815e32d5dSMike Smith     DEVMETHOD(bus_deactivate_resource,	bus_generic_deactivate_resource),
20915e32d5dSMike Smith     DEVMETHOD(bus_setup_intr,		bus_generic_setup_intr),
21015e32d5dSMike Smith     DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),
2110d484d24SJohn Baldwin     DEVMETHOD(bus_hint_device_unit,	acpi_hint_device_unit),
212ffcf962dSAdrian Chadd     DEVMETHOD(bus_get_domain,		acpi_get_domain),
21315e32d5dSMike Smith 
214ce619b2eSNate Lawson     /* ACPI bus */
215ce619b2eSNate Lawson     DEVMETHOD(acpi_id_probe,		acpi_device_id_probe),
216ce619b2eSNate Lawson     DEVMETHOD(acpi_evaluate_object,	acpi_device_eval_obj),
21710ce62b9SNate Lawson     DEVMETHOD(acpi_pwr_for_sleep,	acpi_device_pwr_for_sleep),
218df8d2a32SNate Lawson     DEVMETHOD(acpi_scan_children,	acpi_device_scan_children),
219ce619b2eSNate Lawson 
220bc0f2195SMike Smith     /* ISA emulation */
221bc0f2195SMike Smith     DEVMETHOD(isa_pnp_probe,		acpi_isa_pnp_probe),
222bc0f2195SMike Smith 
22361bfd867SSofian Brabez     DEVMETHOD_END
22415e32d5dSMike Smith };
22515e32d5dSMike Smith 
22615e32d5dSMike Smith static driver_t acpi_driver = {
22715e32d5dSMike Smith     "acpi",
22815e32d5dSMike Smith     acpi_methods,
22915e32d5dSMike Smith     sizeof(struct acpi_softc),
23015e32d5dSMike Smith };
23115e32d5dSMike Smith 
2323273b005SMike Smith static devclass_t acpi_devclass;
2336d63101aSMike Smith DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
234a4ecd543SNate Lawson MODULE_VERSION(acpi, 1);
23515e32d5dSMike Smith 
23615e2f34fSNate Lawson ACPI_SERIAL_DECL(acpi, "ACPI root bus");
23715e2f34fSNate Lawson 
238adad4744SNate Lawson /* Local pools for managing system resources for ACPI child devices. */
239adad4744SNate Lawson static struct rman acpi_rman_io, acpi_rman_mem;
240adad4744SNate Lawson 
241bee4aa4aSNate Lawson #define ACPI_MINIMUM_AWAKETIME	5
242bee4aa4aSNate Lawson 
2435217af30SJohn Baldwin /* Holds the description of the acpi0 device. */
2445217af30SJohn Baldwin static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
2455217af30SJohn Baldwin 
246197b4dccSNate Lawson SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
2471d7b121cSNate Lawson static char acpi_ca_version[12];
2481d7b121cSNate Lawson SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
2491d7b121cSNate Lawson 	      acpi_ca_version, 0, "Version of Intel ACPI-CA");
25015e32d5dSMike Smith 
25115e32d5dSMike Smith /*
252ae19af49SJung-uk Kim  * Allow overriding _OSI methods.
253ae19af49SJung-uk Kim  */
254ae19af49SJung-uk Kim static char acpi_install_interface[256];
255ae19af49SJung-uk Kim TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface,
256ae19af49SJung-uk Kim     sizeof(acpi_install_interface));
257ae19af49SJung-uk Kim static char acpi_remove_interface[256];
258ae19af49SJung-uk Kim TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface,
259ae19af49SJung-uk Kim     sizeof(acpi_remove_interface));
260ae19af49SJung-uk Kim 
2612a18c71dSJung-uk Kim /* Allow users to dump Debug objects without ACPI debugger. */
2622a18c71dSJung-uk Kim static int acpi_debug_objects;
2632a18c71dSJung-uk Kim TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects);
2642a18c71dSJung-uk Kim SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects,
2652a18c71dSJung-uk Kim     CTLFLAG_RW | CTLTYPE_INT, NULL, 0, acpi_debug_objects_sysctl, "I",
2662a18c71dSJung-uk Kim     "Enable Debug objects");
2672a18c71dSJung-uk Kim 
2682a18c71dSJung-uk Kim /* Allow the interpreter to ignore common mistakes in BIOS. */
2692a18c71dSJung-uk Kim static int acpi_interpreter_slack = 1;
2702a18c71dSJung-uk Kim TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack);
2712a18c71dSJung-uk Kim SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RDTUN,
2722a18c71dSJung-uk Kim     &acpi_interpreter_slack, 1, "Turn on interpreter slack mode.");
2732a18c71dSJung-uk Kim 
274313a0c13SJung-uk Kim /* Ignore register widths set by FADT and use default widths instead. */
275313a0c13SJung-uk Kim static int acpi_ignore_reg_width = 1;
276313a0c13SJung-uk Kim TUNABLE_INT("debug.acpi.default_register_width", &acpi_ignore_reg_width);
277313a0c13SJung-uk Kim SYSCTL_INT(_debug_acpi, OID_AUTO, default_register_width, CTLFLAG_RDTUN,
278313a0c13SJung-uk Kim     &acpi_ignore_reg_width, 1, "Ignore register widths set by FADT");
279313a0c13SJung-uk Kim 
280ebbed20dSAndriy Gapon #ifdef __amd64__
2810755473bSJung-uk Kim /* Reset system clock while resuming.  XXX Remove once tested. */
2820755473bSJung-uk Kim static int acpi_reset_clock = 1;
2830755473bSJung-uk Kim TUNABLE_INT("debug.acpi.reset_clock", &acpi_reset_clock);
2840755473bSJung-uk Kim SYSCTL_INT(_debug_acpi, OID_AUTO, reset_clock, CTLFLAG_RW,
2850755473bSJung-uk Kim     &acpi_reset_clock, 1, "Reset system clock while resuming.");
286a0a15716SJung-uk Kim #endif
2870755473bSJung-uk Kim 
28839da3eb3SNate Lawson /* Allow users to override quirks. */
28939da3eb3SNate Lawson TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
29039da3eb3SNate Lawson 
29193bfd059SNate Lawson static int acpi_susp_bounce;
29293bfd059SNate Lawson SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
29393bfd059SNate Lawson     &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
29493bfd059SNate Lawson 
295c9b8d77dSNate Lawson /*
2966d63101aSMike Smith  * ACPI can only be loaded as a module by the loader; activating it after
2976d63101aSMike Smith  * system bootstrap time is not useful, and can be fatal to the system.
2988c0879b6SJohn Baldwin  * It also cannot be unloaded, since the entire system bus hierarchy hangs
299be2b1797SNate Lawson  * off it.
3006d63101aSMike Smith  */
3016d63101aSMike Smith static int
3026d63101aSMike Smith acpi_modevent(struct module *mod, int event, void *junk)
3036d63101aSMike Smith {
3046d63101aSMike Smith     switch (event) {
3056d63101aSMike Smith     case MOD_LOAD:
30687b45ed5SMitsuru IWASAKI 	if (!cold) {
30787b45ed5SMitsuru IWASAKI 	    printf("The ACPI driver cannot be loaded after boot.\n");
3086d63101aSMike Smith 	    return (EPERM);
30987b45ed5SMitsuru IWASAKI 	}
3106d63101aSMike Smith 	break;
3116d63101aSMike Smith     case MOD_UNLOAD:
312f9390180SMitsuru IWASAKI 	if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
3136d63101aSMike Smith 	    return (EBUSY);
314f9390180SMitsuru IWASAKI 	break;
3156d63101aSMike Smith     default:
3166d63101aSMike Smith 	break;
3176d63101aSMike Smith     }
3186d63101aSMike Smith     return (0);
3196d63101aSMike Smith }
3206d63101aSMike Smith 
3216d63101aSMike Smith /*
322bbc2815cSJohn Baldwin  * Perform early initialization.
32315e32d5dSMike Smith  */
324bbc2815cSJohn Baldwin ACPI_STATUS
325bbc2815cSJohn Baldwin acpi_Startup(void)
32615e32d5dSMike Smith {
32789fb5af8SNate Lawson     static int started = 0;
3282be4e471SJung-uk Kim     ACPI_STATUS status;
3292be4e471SJung-uk Kim     int val;
33015e32d5dSMike Smith 
3311b8c233dSPeter Pentchev     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3321b8c233dSPeter Pentchev 
333bee4aa4aSNate Lawson     /* Only run the startup code once.  The MADT driver also calls this. */
334bbc2815cSJohn Baldwin     if (started)
3352be4e471SJung-uk Kim 	return_VALUE (AE_OK);
336bbc2815cSJohn Baldwin     started = 1;
33715e32d5dSMike Smith 
338413081d7SNate Lawson     /*
3392be4e471SJung-uk Kim      * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
3402be4e471SJung-uk Kim      * if more tables exist.
341413081d7SNate Lawson      */
3422be4e471SJung-uk Kim     if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
3432be4e471SJung-uk Kim 	printf("ACPI: Table initialisation failed: %s\n",
3442be4e471SJung-uk Kim 	    AcpiFormatException(status));
3452be4e471SJung-uk Kim 	return_VALUE (status);
34615e32d5dSMike Smith     }
3473184cf5aSNate Lawson 
34889fb5af8SNate Lawson     /* Set up any quirks we have for this system. */
3492be4e471SJung-uk Kim     if (acpi_quirks == ACPI_Q_OK)
35089fb5af8SNate Lawson 	acpi_table_quirks(&acpi_quirks);
35189fb5af8SNate Lawson 
35239da3eb3SNate Lawson     /* If the user manually set the disabled hint to 0, force-enable ACPI. */
35389fb5af8SNate Lawson     if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
35489fb5af8SNate Lawson 	acpi_quirks &= ~ACPI_Q_BROKEN;
35589fb5af8SNate Lawson     if (acpi_quirks & ACPI_Q_BROKEN) {
35689fb5af8SNate Lawson 	printf("ACPI disabled by blacklist.  Contact your BIOS vendor.\n");
3572be4e471SJung-uk Kim 	status = AE_SUPPORT;
35889fb5af8SNate Lawson     }
3593184cf5aSNate Lawson 
3602be4e471SJung-uk Kim     return_VALUE (status);
361bbc2815cSJohn Baldwin }
362bbc2815cSJohn Baldwin 
363bbc2815cSJohn Baldwin /*
3645217af30SJohn Baldwin  * Detect ACPI and perform early initialisation.
365bbc2815cSJohn Baldwin  */
3665217af30SJohn Baldwin int
3675217af30SJohn Baldwin acpi_identify(void)
368bbc2815cSJohn Baldwin {
3695217af30SJohn Baldwin     ACPI_TABLE_RSDP	*rsdp;
3705217af30SJohn Baldwin     ACPI_TABLE_HEADER	*rsdt;
3715217af30SJohn Baldwin     ACPI_PHYSICAL_ADDRESS paddr;
3725217af30SJohn Baldwin     struct sbuf		sb;
373bbc2815cSJohn Baldwin 
374bbc2815cSJohn Baldwin     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
375bbc2815cSJohn Baldwin 
376bbc2815cSJohn Baldwin     if (!cold)
3775217af30SJohn Baldwin 	return (ENXIO);
378bbc2815cSJohn Baldwin 
379a8de37b0SEitan Adler     /* Check that we haven't been disabled with a hint. */
380a8de37b0SEitan Adler     if (resource_disabled("acpi", 0))
381a8de37b0SEitan Adler 	return (ENXIO);
382a8de37b0SEitan Adler 
3835217af30SJohn Baldwin     /* Check for other PM systems. */
3845217af30SJohn Baldwin     if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
3855217af30SJohn Baldwin 	power_pm_get_type() != POWER_PM_TYPE_ACPI) {
3865217af30SJohn Baldwin 	printf("ACPI identify failed, other PM system enabled.\n");
3875217af30SJohn Baldwin 	return (ENXIO);
3885217af30SJohn Baldwin     }
3894b1ff978SMark Santcroos 
3902be4e471SJung-uk Kim     /* Initialize root tables. */
3912be4e471SJung-uk Kim     if (ACPI_FAILURE(acpi_Startup())) {
3922be4e471SJung-uk Kim 	printf("ACPI: Try disabling either ACPI or apic support.\n");
3935217af30SJohn Baldwin 	return (ENXIO);
3942be4e471SJung-uk Kim     }
39515e32d5dSMike Smith 
3965217af30SJohn Baldwin     if ((paddr = AcpiOsGetRootPointer()) == 0 ||
3975217af30SJohn Baldwin 	(rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
3985217af30SJohn Baldwin 	return (ENXIO);
3995217af30SJohn Baldwin     if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
4005217af30SJohn Baldwin 	paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
4015217af30SJohn Baldwin     else
4025217af30SJohn Baldwin 	paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
4035217af30SJohn Baldwin     AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
4045217af30SJohn Baldwin 
4055217af30SJohn Baldwin     if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
4065217af30SJohn Baldwin 	return (ENXIO);
4075217af30SJohn Baldwin     sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN);
4085217af30SJohn Baldwin     sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
4095217af30SJohn Baldwin     sbuf_trim(&sb);
4105217af30SJohn Baldwin     sbuf_putc(&sb, ' ');
4115217af30SJohn Baldwin     sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
4125217af30SJohn Baldwin     sbuf_trim(&sb);
4135217af30SJohn Baldwin     sbuf_finish(&sb);
4145217af30SJohn Baldwin     sbuf_delete(&sb);
4155217af30SJohn Baldwin     AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
4165217af30SJohn Baldwin 
4175217af30SJohn Baldwin     snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
4185217af30SJohn Baldwin 
4195217af30SJohn Baldwin     return (0);
42015e32d5dSMike Smith }
42115e32d5dSMike Smith 
42215e32d5dSMike Smith /*
423bee4aa4aSNate Lawson  * Fetch some descriptive data from ACPI to put in our attach message.
42415e32d5dSMike Smith  */
42515e32d5dSMike Smith static int
42615e32d5dSMike Smith acpi_probe(device_t dev)
42715e32d5dSMike Smith {
42815e32d5dSMike Smith 
429b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
430f9390180SMitsuru IWASAKI 
4315217af30SJohn Baldwin     device_set_desc(dev, acpi_desc);
432bee4aa4aSNate Lawson 
433feeec74dSNathan Whitehorn     return_VALUE (BUS_PROBE_NOWILDCARD);
43415e32d5dSMike Smith }
43515e32d5dSMike Smith 
43615e32d5dSMike Smith static int
43715e32d5dSMike Smith acpi_attach(device_t dev)
43815e32d5dSMike Smith {
43915e32d5dSMike Smith     struct acpi_softc	*sc;
440cb9b0d80SMike Smith     ACPI_STATUS		status;
441ea27c63eSNate Lawson     int			error, state;
44232d18aa5SMike Smith     UINT32		flags;
443ea27c63eSNate Lawson     UINT8		TypeA, TypeB;
444498d464fSMitsuru IWASAKI     char		*env;
44515e32d5dSMike Smith 
446b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
447bee4aa4aSNate Lawson 
44815e32d5dSMike Smith     sc = device_get_softc(dev);
44915e32d5dSMike Smith     sc->acpi_dev = dev;
450fd90e2edSJung-uk Kim     callout_init(&sc->susp_force_to, 1);
45115e32d5dSMike Smith 
4522be4e471SJung-uk Kim     error = ENXIO;
4532be4e471SJung-uk Kim 
45491233413SNate Lawson     /* Initialize resource manager. */
45591233413SNate Lawson     acpi_rman_io.rm_type = RMAN_ARRAY;
45691233413SNate Lawson     acpi_rman_io.rm_start = 0;
45791233413SNate Lawson     acpi_rman_io.rm_end = 0xffff;
4580bba6acfSJohn Baldwin     acpi_rman_io.rm_descr = "ACPI I/O ports";
45991233413SNate Lawson     if (rman_init(&acpi_rman_io) != 0)
46091233413SNate Lawson 	panic("acpi rman_init IO ports failed");
46191233413SNate Lawson     acpi_rman_mem.rm_type = RMAN_ARRAY;
46291233413SNate Lawson     acpi_rman_mem.rm_start = 0;
46391233413SNate Lawson     acpi_rman_mem.rm_end = ~0ul;
4640bba6acfSJohn Baldwin     acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
46591233413SNate Lawson     if (rman_init(&acpi_rman_mem) != 0)
46691233413SNate Lawson 	panic("acpi rman_init memory failed");
46791233413SNate Lawson 
4682be4e471SJung-uk Kim     /* Initialise the ACPI mutex */
4692be4e471SJung-uk Kim     mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
4702be4e471SJung-uk Kim 
4712be4e471SJung-uk Kim     /*
4722be4e471SJung-uk Kim      * Set the globals from our tunables.  This is needed because ACPI-CA
4732be4e471SJung-uk Kim      * uses UINT8 for some values and we have no tunable_byte.
4742be4e471SJung-uk Kim      */
4752a18c71dSJung-uk Kim     AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE;
4762a18c71dSJung-uk Kim     AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
477313a0c13SJung-uk Kim     AcpiGbl_UseDefaultRegisterWidths = acpi_ignore_reg_width ? TRUE : FALSE;
4782a18c71dSJung-uk Kim 
4792a18c71dSJung-uk Kim #ifndef ACPI_DEBUG
4802a18c71dSJung-uk Kim     /*
4812a18c71dSJung-uk Kim      * Disable all debugging layers and levels.
4822a18c71dSJung-uk Kim      */
4832a18c71dSJung-uk Kim     AcpiDbgLayer = 0;
4842a18c71dSJung-uk Kim     AcpiDbgLevel = 0;
4852a18c71dSJung-uk Kim #endif
4862be4e471SJung-uk Kim 
4872be4e471SJung-uk Kim     /* Start up the ACPI CA subsystem. */
4882be4e471SJung-uk Kim     status = AcpiInitializeSubsystem();
4892be4e471SJung-uk Kim     if (ACPI_FAILURE(status)) {
4902be4e471SJung-uk Kim 	device_printf(dev, "Could not initialize Subsystem: %s\n",
4912be4e471SJung-uk Kim 		      AcpiFormatException(status));
4922be4e471SJung-uk Kim 	goto out;
4932be4e471SJung-uk Kim     }
4942be4e471SJung-uk Kim 
495ae19af49SJung-uk Kim     /* Override OS interfaces if the user requested. */
496ae19af49SJung-uk Kim     acpi_reset_interfaces(dev);
497ae19af49SJung-uk Kim 
4982be4e471SJung-uk Kim     /* Load ACPI name space. */
4992be4e471SJung-uk Kim     status = AcpiLoadTables();
5002be4e471SJung-uk Kim     if (ACPI_FAILURE(status)) {
5012be4e471SJung-uk Kim 	device_printf(dev, "Could not load Namespace: %s\n",
5022be4e471SJung-uk Kim 		      AcpiFormatException(status));
5032be4e471SJung-uk Kim 	goto out;
5042be4e471SJung-uk Kim     }
5052be4e471SJung-uk Kim 
506d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
507d320e05cSJohn Baldwin     /* Handle MCFG table if present. */
508d320e05cSJohn Baldwin     acpi_enable_pcie();
509d320e05cSJohn Baldwin #endif
510d320e05cSJohn Baldwin 
51115e32d5dSMike Smith     /*
512be2b1797SNate Lawson      * Note that some systems (specifically, those with namespace evaluation
513be2b1797SNate Lawson      * issues that require the avoidance of parts of the namespace) must
514be2b1797SNate Lawson      * avoid running _INI and _STA on everything, as well as dodging the final
515be2b1797SNate Lawson      * object init pass.
51615e32d5dSMike Smith      *
51732d18aa5SMike Smith      * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
51832d18aa5SMike Smith      *
519be2b1797SNate Lawson      * XXX We should arrange for the object init pass after we have attached
520be2b1797SNate Lawson      *     all our child devices, but on many systems it works here.
52115e32d5dSMike Smith      */
52232d18aa5SMike Smith     flags = 0;
523d786139cSMaxime Henrion     if (testenv("debug.acpi.avoid"))
52432d18aa5SMike Smith 	flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
525bee4aa4aSNate Lawson 
526bee4aa4aSNate Lawson     /* Bring the hardware and basic handlers online. */
527b53f2771SMike Smith     if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
528be2b1797SNate Lawson 	device_printf(dev, "Could not enable ACPI: %s\n",
529be2b1797SNate Lawson 		      AcpiFormatException(status));
530cb9b0d80SMike Smith 	goto out;
53115e32d5dSMike Smith     }
53215e32d5dSMike Smith 
533f8335e3aSNate Lawson     /*
534f8335e3aSNate Lawson      * Call the ECDT probe function to provide EC functionality before
535f8335e3aSNate Lawson      * the namespace has been evaluated.
536da72d149SNate Lawson      *
537da72d149SNate Lawson      * XXX This happens before the sysresource devices have been probed and
538da72d149SNate Lawson      * attached so its resources come from nexus0.  In practice, this isn't
539da72d149SNate Lawson      * a problem but should be addressed eventually.
540f8335e3aSNate Lawson      */
541f8335e3aSNate Lawson     acpi_ec_ecdt_probe(dev);
542f8335e3aSNate Lawson 
543bee4aa4aSNate Lawson     /* Bring device objects and regions online. */
544b69ed3f4SMitsuru IWASAKI     if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
545be2b1797SNate Lawson 	device_printf(dev, "Could not initialize ACPI objects: %s\n",
546be2b1797SNate Lawson 		      AcpiFormatException(status));
547b69ed3f4SMitsuru IWASAKI 	goto out;
548b69ed3f4SMitsuru IWASAKI     }
549b69ed3f4SMitsuru IWASAKI 
55015e32d5dSMike Smith     /*
5511d073b1dSJohn Baldwin      * Setup our sysctl tree.
5521d073b1dSJohn Baldwin      *
5531d073b1dSJohn Baldwin      * XXX: This doesn't check to make sure that none of these fail.
5541d073b1dSJohn Baldwin      */
5551d073b1dSJohn Baldwin     sysctl_ctx_init(&sc->acpi_sysctl_ctx);
5561d073b1dSJohn Baldwin     sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
5571d073b1dSJohn Baldwin 			       SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
5581d073b1dSJohn Baldwin 			       device_get_name(dev), CTLFLAG_RD, 0, "");
5591d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
560d75de536SMitsuru IWASAKI 	OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
561*ad73b301SAdrian Chadd 	0, 0, acpi_supported_sleep_state_sysctl, "A",
562*ad73b301SAdrian Chadd 	"List supported ACPI sleep states.");
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,
565*ad73b301SAdrian Chadd 	&sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A",
566*ad73b301SAdrian Chadd 	"Power button ACPI sleep state.");
5671d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5681d073b1dSJohn Baldwin 	OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
569*ad73b301SAdrian Chadd 	&sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A",
570*ad73b301SAdrian Chadd 	"Sleep button ACPI sleep state.");
5711d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5721d073b1dSJohn Baldwin 	OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
573*ad73b301SAdrian Chadd 	&sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A",
574*ad73b301SAdrian Chadd 	"Lid ACPI sleep state. Set to S3 if you want to suspend your laptop when close the Lid.");
575f86214b6SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
576f86214b6SMitsuru IWASAKI 	OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
577f86214b6SMitsuru IWASAKI 	&sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
578f86214b6SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
579f86214b6SMitsuru IWASAKI 	OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
580f86214b6SMitsuru IWASAKI 	&sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
5812d644607SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
582197b4dccSNate Lawson 	OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
58331f301d0SChristian Brueffer 	"sleep delay in seconds");
584ff01efb5SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
585197b4dccSNate Lawson 	OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
5861611ea87SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
587197b4dccSNate Lawson 	OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
588d85e6785SNate Lawson     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
589d85e6785SNate Lawson 	OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
590d85e6785SNate Lawson 	&sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
591d1b16e18SNate Lawson     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
592d1b16e18SNate Lawson 	OID_AUTO, "handle_reboot", CTLFLAG_RW,
593d1b16e18SNate Lawson 	&sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
594bf0c18ecSNate Lawson 
595bf0c18ecSNate Lawson     /*
5962b9609abSNate Lawson      * Default to 1 second before sleeping to give some machines time to
597bf0c18ecSNate Lawson      * stabilize.
598bf0c18ecSNate Lawson      */
5992b9609abSNate Lawson     sc->acpi_sleep_delay = 1;
6002d644607SMitsuru IWASAKI     if (bootverbose)
6012d644607SMitsuru IWASAKI 	sc->acpi_verbose = 1;
6022be111bfSDavide Italiano     if ((env = kern_getenv("hw.acpi.verbose")) != NULL) {
603965a34fbSNate Lawson 	if (strcmp(env, "0") != 0)
604498d464fSMitsuru IWASAKI 	    sc->acpi_verbose = 1;
605498d464fSMitsuru IWASAKI 	freeenv(env);
606498d464fSMitsuru IWASAKI     }
6071d073b1dSJohn Baldwin 
608ac731af5SJung-uk Kim     /* Only enable reboot by default if the FADT says it is available. */
609ac731af5SJung-uk Kim     if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER)
610ac731af5SJung-uk Kim 	sc->acpi_handle_reboot = 1;
611ac731af5SJung-uk Kim 
612fe5d5d7dSAndrew Turner #if !ACPI_REDUCED_HARDWARE
6132d610c46SNate Lawson     /* Only enable S4BIOS by default if the FACS says it is available. */
614d8c37c3aSAndrew Turner     if (AcpiGbl_FACS != NULL && AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
6152d610c46SNate Lawson 	sc->acpi_s4bios = 1;
616fe5d5d7dSAndrew Turner #endif
6172d610c46SNate Lawson 
618a0e73a12SJung-uk Kim     /* Probe all supported sleep states. */
619a0e73a12SJung-uk Kim     acpi_sleep_states[ACPI_STATE_S0] = TRUE;
620a0e73a12SJung-uk Kim     for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
621efcc2a30SJung-uk Kim 	if (ACPI_SUCCESS(AcpiEvaluateObject(ACPI_ROOT_OBJECT,
622efcc2a30SJung-uk Kim 	    __DECONST(char *, AcpiGbl_SleepStateNames[state]), NULL, NULL)) &&
623efcc2a30SJung-uk Kim 	    ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
624a0e73a12SJung-uk Kim 	    acpi_sleep_states[state] = TRUE;
625a0e73a12SJung-uk Kim 
6261d073b1dSJohn Baldwin     /*
627ea27c63eSNate Lawson      * Dispatch the default sleep state to devices.  The lid switch is set
628a0e73a12SJung-uk Kim      * to UNKNOWN by default to avoid surprising users.
62915e32d5dSMike Smith      */
630a0e73a12SJung-uk Kim     sc->acpi_power_button_sx = acpi_sleep_states[ACPI_STATE_S5] ?
631a0e73a12SJung-uk Kim 	ACPI_STATE_S5 : ACPI_STATE_UNKNOWN;
632a0e73a12SJung-uk Kim     sc->acpi_lid_switch_sx = ACPI_STATE_UNKNOWN;
633a0e73a12SJung-uk Kim     sc->acpi_standby_sx = acpi_sleep_states[ACPI_STATE_S1] ?
634a0e73a12SJung-uk Kim 	ACPI_STATE_S1 : ACPI_STATE_UNKNOWN;
635a0e73a12SJung-uk Kim     sc->acpi_suspend_sx = acpi_sleep_states[ACPI_STATE_S3] ?
636a0e73a12SJung-uk Kim 	ACPI_STATE_S3 : ACPI_STATE_UNKNOWN;
63715e32d5dSMike Smith 
638ea27c63eSNate Lawson     /* Pick the first valid sleep state for the sleep button default. */
639a0e73a12SJung-uk Kim     sc->acpi_sleep_button_sx = ACPI_STATE_UNKNOWN;
64000a30448SNate Lawson     for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
641a0e73a12SJung-uk Kim 	if (acpi_sleep_states[state]) {
642ea27c63eSNate Lawson 	    sc->acpi_sleep_button_sx = state;
643ea27c63eSNate Lawson 	    break;
644ea27c63eSNate Lawson 	}
645ea27c63eSNate Lawson 
64613d4f7baSMitsuru IWASAKI     acpi_enable_fixed_events(sc);
64715e32d5dSMike Smith 
64815e32d5dSMike Smith     /*
64915e32d5dSMike Smith      * Scan the namespace and attach/initialise children.
65015e32d5dSMike Smith      */
65115e32d5dSMike Smith 
65259e472e9SNate Lawson     /* Register our shutdown handler. */
653be2b1797SNate Lawson     EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
654be2b1797SNate Lawson 	SHUTDOWN_PRI_LAST);
65515e32d5dSMike Smith 
65615e32d5dSMike Smith     /*
65715e32d5dSMike Smith      * Register our acpi event handlers.
65815e32d5dSMike Smith      * XXX should be configurable eg. via userland policy manager.
65915e32d5dSMike Smith      */
660be2b1797SNate Lawson     EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
661be2b1797SNate Lawson 	sc, ACPI_EVENT_PRI_LAST);
662be2b1797SNate Lawson     EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
663be2b1797SNate Lawson 	sc, ACPI_EVENT_PRI_LAST);
66415e32d5dSMike Smith 
665be2b1797SNate Lawson     /* Flag our initial states. */
666a0e73a12SJung-uk Kim     sc->acpi_enabled = TRUE;
66715e32d5dSMike Smith     sc->acpi_sstate = ACPI_STATE_S0;
668a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = TRUE;
66915e32d5dSMike Smith 
670be2b1797SNate Lawson     /* Create the control device */
671a89fcf28STakanori Watanabe     sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
6722a4689e8SRobert Watson 			      "acpi");
67315e32d5dSMike Smith     sc->acpi_dev_t->si_drv1 = sc;
67415e32d5dSMike Smith 
675be2b1797SNate Lawson     if ((error = acpi_machdep_init(dev)))
676f86214b6SMitsuru IWASAKI 	goto out;
677f86214b6SMitsuru IWASAKI 
678f9390180SMitsuru IWASAKI     /* Register ACPI again to pass the correct argument of pm_func. */
679f9390180SMitsuru IWASAKI     power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
680f9390180SMitsuru IWASAKI 
68164de8019SJohn Baldwin     if (!acpi_disabled("bus")) {
68264de8019SJohn Baldwin 	EVENTHANDLER_REGISTER(dev_lookup, acpi_lookup, NULL, 1000);
683eeb6dba2SJohn Baldwin 	acpi_probe_children(dev);
68464de8019SJohn Baldwin     }
685eeb6dba2SJohn Baldwin 
6865a77b11bSJung-uk Kim     /* Update all GPEs and enable runtime GPEs. */
6875a77b11bSJung-uk Kim     status = AcpiUpdateAllGpes();
6885a77b11bSJung-uk Kim     if (ACPI_FAILURE(status))
6895a77b11bSJung-uk Kim 	device_printf(dev, "Could not update all GPEs: %s\n",
6905a77b11bSJung-uk Kim 	    AcpiFormatException(status));
6915a77b11bSJung-uk Kim 
692a0e73a12SJung-uk Kim     /* Allow sleep request after a while. */
693fadf3fb9SJohn Baldwin     callout_init_mtx(&acpi_sleep_timer, &acpi_mutex, 0);
694fadf3fb9SJohn Baldwin     callout_reset(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME,
695fadf3fb9SJohn Baldwin 	acpi_sleep_enable, sc);
696a0e73a12SJung-uk Kim 
697cb9b0d80SMike Smith     error = 0;
698cb9b0d80SMike Smith 
699cb9b0d80SMike Smith  out:
700cb9b0d80SMike Smith     return_VALUE (error);
70115e32d5dSMike Smith }
70215e32d5dSMike Smith 
703a7a3177fSJung-uk Kim static void
704a7a3177fSJung-uk Kim acpi_set_power_children(device_t dev, int state)
705a7a3177fSJung-uk Kim {
70644aba0f6SJung-uk Kim 	device_t child;
707a7a3177fSJung-uk Kim 	device_t *devlist;
708a7a3177fSJung-uk Kim 	int dstate, i, numdevs;
709a7a3177fSJung-uk Kim 
710a7a3177fSJung-uk Kim 	if (device_get_children(dev, &devlist, &numdevs) != 0)
711a7a3177fSJung-uk Kim 		return;
712a7a3177fSJung-uk Kim 
713a7a3177fSJung-uk Kim 	/*
714a7a3177fSJung-uk Kim 	 * Retrieve and set D-state for the sleep state if _SxD is present.
715a7a3177fSJung-uk Kim 	 * Skip children who aren't attached since they are handled separately.
716a7a3177fSJung-uk Kim 	 */
717a7a3177fSJung-uk Kim 	for (i = 0; i < numdevs; i++) {
718a7a3177fSJung-uk Kim 		child = devlist[i];
719a7a3177fSJung-uk Kim 		dstate = state;
720a7a3177fSJung-uk Kim 		if (device_is_attached(child) &&
72144aba0f6SJung-uk Kim 		    acpi_device_pwr_for_sleep(dev, child, &dstate) == 0)
722a7a3177fSJung-uk Kim 			acpi_set_powerstate(child, dstate);
723a7a3177fSJung-uk Kim 	}
724a7a3177fSJung-uk Kim 	free(devlist, M_TEMP);
725a7a3177fSJung-uk Kim }
726a7a3177fSJung-uk Kim 
727169b539aSNate Lawson static int
72810ce62b9SNate Lawson acpi_suspend(device_t dev)
72910ce62b9SNate Lawson {
730a7a3177fSJung-uk Kim     int error;
73110ce62b9SNate Lawson 
732a56fe095SJohn Baldwin     GIANT_REQUIRED;
733a56fe095SJohn Baldwin 
73410ce62b9SNate Lawson     error = bus_generic_suspend(dev);
735a7a3177fSJung-uk Kim     if (error == 0)
736a7a3177fSJung-uk Kim 	acpi_set_power_children(dev, ACPI_STATE_D3);
73710ce62b9SNate Lawson 
73810ce62b9SNate Lawson     return (error);
73910ce62b9SNate Lawson }
74010ce62b9SNate Lawson 
74110ce62b9SNate Lawson static int
74210ce62b9SNate Lawson acpi_resume(device_t dev)
74310ce62b9SNate Lawson {
74410ce62b9SNate Lawson 
745a56fe095SJohn Baldwin     GIANT_REQUIRED;
746a56fe095SJohn Baldwin 
747a7a3177fSJung-uk Kim     acpi_set_power_children(dev, ACPI_STATE_D0);
74810ce62b9SNate Lawson 
74910ce62b9SNate Lawson     return (bus_generic_resume(dev));
75010ce62b9SNate Lawson }
75110ce62b9SNate Lawson 
75210ce62b9SNate Lawson static int
753169b539aSNate Lawson acpi_shutdown(device_t dev)
754169b539aSNate Lawson {
755169b539aSNate Lawson 
756a56fe095SJohn Baldwin     GIANT_REQUIRED;
757a56fe095SJohn Baldwin 
7580e414868SNate Lawson     /* Allow children to shutdown first. */
7590e414868SNate Lawson     bus_generic_shutdown(dev);
7600e414868SNate Lawson 
761bee4aa4aSNate Lawson     /*
762bee4aa4aSNate Lawson      * Enable any GPEs that are able to power-on the system (i.e., RTC).
763bee4aa4aSNate Lawson      * Also, disable any that are not valid for this state (most).
764bee4aa4aSNate Lawson      */
765d4b9ff91SNate Lawson     acpi_wake_prep_walk(ACPI_STATE_S5);
766d4b9ff91SNate Lawson 
767169b539aSNate Lawson     return (0);
768169b539aSNate Lawson }
769169b539aSNate Lawson 
77015e32d5dSMike Smith /*
77115e32d5dSMike Smith  * Handle a new device being added
77215e32d5dSMike Smith  */
77315e32d5dSMike Smith static device_t
7743d844eddSAndriy Gapon acpi_add_child(device_t bus, u_int order, const char *name, int unit)
77515e32d5dSMike Smith {
77615e32d5dSMike Smith     struct acpi_device	*ad;
77715e32d5dSMike Smith     device_t		child;
77815e32d5dSMike Smith 
779be2b1797SNate Lawson     if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
78015e32d5dSMike Smith 	return (NULL);
78115e32d5dSMike Smith 
78215e32d5dSMike Smith     resource_list_init(&ad->ad_rl);
78315e32d5dSMike Smith 
78415e32d5dSMike Smith     child = device_add_child_ordered(bus, order, name, unit);
78515e32d5dSMike Smith     if (child != NULL)
78615e32d5dSMike Smith 	device_set_ivars(child, ad);
78743ce1c77SNate Lawson     else
78843ce1c77SNate Lawson 	free(ad, M_ACPIDEV);
78915e32d5dSMike Smith     return (child);
79015e32d5dSMike Smith }
79115e32d5dSMike Smith 
79215e32d5dSMike Smith static int
79315e32d5dSMike Smith acpi_print_child(device_t bus, device_t child)
79415e32d5dSMike Smith {
79515e32d5dSMike Smith     struct acpi_device	 *adev = device_get_ivars(child);
79615e32d5dSMike Smith     struct resource_list *rl = &adev->ad_rl;
79715e32d5dSMike Smith     int retval = 0;
79815e32d5dSMike Smith 
79915e32d5dSMike Smith     retval += bus_print_child_header(bus, child);
8009ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "port",  SYS_RES_IOPORT, "%#lx");
8019ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
8029ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "irq",   SYS_RES_IRQ,    "%ld");
8039ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "drq",   SYS_RES_DRQ,    "%ld");
804a91c5fa8SNate Lawson     if (device_get_flags(child))
805a91c5fa8SNate Lawson 	retval += printf(" flags %#x", device_get_flags(child));
806ffcf962dSAdrian Chadd     retval += bus_print_child_domain(bus, child);
8072c8d3b23SNate Lawson     retval += bus_print_child_footer(bus, child);
80815e32d5dSMike Smith 
80915e32d5dSMike Smith     return (retval);
81015e32d5dSMike Smith }
81115e32d5dSMike Smith 
81210ce62b9SNate Lawson /*
81310ce62b9SNate Lawson  * If this device is an ACPI child but no one claimed it, attempt
81410ce62b9SNate Lawson  * to power it off.  We'll power it back up when a driver is added.
81510ce62b9SNate Lawson  *
81610ce62b9SNate Lawson  * XXX Disabled for now since many necessary devices (like fdc and
81710ce62b9SNate Lawson  * ATA) don't claim the devices we created for them but still expect
81810ce62b9SNate Lawson  * them to be powered up.
81910ce62b9SNate Lawson  */
82010ce62b9SNate Lawson static void
82110ce62b9SNate Lawson acpi_probe_nomatch(device_t bus, device_t child)
82210ce62b9SNate Lawson {
82396cf0b6dSWarner Losh #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
824a7a3177fSJung-uk Kim     acpi_set_powerstate(child, ACPI_STATE_D3);
82596cf0b6dSWarner Losh #endif
82610ce62b9SNate Lawson }
82710ce62b9SNate Lawson 
82810ce62b9SNate Lawson /*
82910ce62b9SNate Lawson  * If a new driver has a chance to probe a child, first power it up.
83010ce62b9SNate Lawson  *
83110ce62b9SNate Lawson  * XXX Disabled for now (see acpi_probe_nomatch for details).
83210ce62b9SNate Lawson  */
83310ce62b9SNate Lawson static void
83410ce62b9SNate Lawson acpi_driver_added(device_t dev, driver_t *driver)
83510ce62b9SNate Lawson {
83610ce62b9SNate Lawson     device_t child, *devlist;
83710ce62b9SNate Lawson     int i, numdevs;
83810ce62b9SNate Lawson 
83910ce62b9SNate Lawson     DEVICE_IDENTIFY(driver, dev);
840099ea4b5SWarner Losh     if (device_get_children(dev, &devlist, &numdevs))
841099ea4b5SWarner Losh 	    return;
84210ce62b9SNate Lawson     for (i = 0; i < numdevs; i++) {
84310ce62b9SNate Lawson 	child = devlist[i];
84410ce62b9SNate Lawson 	if (device_get_state(child) == DS_NOTPRESENT) {
84596cf0b6dSWarner Losh #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
846a7a3177fSJung-uk Kim 	    acpi_set_powerstate(child, ACPI_STATE_D0);
84710ce62b9SNate Lawson 	    if (device_probe_and_attach(child) != 0)
848a7a3177fSJung-uk Kim 		acpi_set_powerstate(child, ACPI_STATE_D3);
84996cf0b6dSWarner Losh #else
85096cf0b6dSWarner Losh 	    device_probe_and_attach(child);
85196cf0b6dSWarner Losh #endif
85210ce62b9SNate Lawson 	}
85310ce62b9SNate Lawson     }
85410ce62b9SNate Lawson     free(devlist, M_TEMP);
85510ce62b9SNate Lawson }
85610ce62b9SNate Lawson 
85763600cc3SNate Lawson /* Location hint for devctl(8) */
85863600cc3SNate Lawson static int
859247648afSTakanori Watanabe acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
860247648afSTakanori Watanabe     size_t buflen)
861247648afSTakanori Watanabe {
862247648afSTakanori Watanabe     struct acpi_device *dinfo = device_get_ivars(child);
8639cf5a6aaSAdrian Chadd     char buf2[32];
8649cf5a6aaSAdrian Chadd     int pxm;
865247648afSTakanori Watanabe 
8669cf5a6aaSAdrian Chadd     if (dinfo->ad_handle) {
867d40c0f53SNate Lawson         snprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
8689cf5a6aaSAdrian Chadd         if (ACPI_SUCCESS(acpi_GetInteger(dinfo->ad_handle, "_PXM", &pxm))) {
8699cf5a6aaSAdrian Chadd                 snprintf(buf2, 32, " _PXM=%d", pxm);
8709cf5a6aaSAdrian Chadd                 strlcat(buf, buf2, buflen);
8719cf5a6aaSAdrian Chadd         }
8729cf5a6aaSAdrian Chadd     } else {
873d40c0f53SNate Lawson         snprintf(buf, buflen, "unknown");
8749cf5a6aaSAdrian Chadd     }
875247648afSTakanori Watanabe     return (0);
876247648afSTakanori Watanabe }
877247648afSTakanori Watanabe 
87863600cc3SNate Lawson /* PnP information for devctl(8) */
87963600cc3SNate Lawson static int
880247648afSTakanori Watanabe acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
881247648afSTakanori Watanabe     size_t buflen)
882247648afSTakanori Watanabe {
88363600cc3SNate Lawson     struct acpi_device *dinfo = device_get_ivars(child);
88492488a57SJung-uk Kim     ACPI_DEVICE_INFO *adinfo;
885247648afSTakanori Watanabe 
88692488a57SJung-uk Kim     if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo))) {
887d40c0f53SNate Lawson 	snprintf(buf, buflen, "unknown");
88892488a57SJung-uk Kim 	return (0);
88992488a57SJung-uk Kim     }
89092488a57SJung-uk Kim 
891247648afSTakanori Watanabe     snprintf(buf, buflen, "_HID=%s _UID=%lu",
892247648afSTakanori Watanabe 	(adinfo->Valid & ACPI_VALID_HID) ?
89392488a57SJung-uk Kim 	adinfo->HardwareId.String : "none",
89463600cc3SNate Lawson 	(adinfo->Valid & ACPI_VALID_UID) ?
89592488a57SJung-uk Kim 	strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL);
896247648afSTakanori Watanabe     AcpiOsFree(adinfo);
897247648afSTakanori Watanabe 
898247648afSTakanori Watanabe     return (0);
899247648afSTakanori Watanabe }
900247648afSTakanori Watanabe 
901247648afSTakanori Watanabe /*
90215e32d5dSMike Smith  * Handle per-device ivars
90315e32d5dSMike Smith  */
90415e32d5dSMike Smith static int
90515e32d5dSMike Smith acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
90615e32d5dSMike Smith {
90715e32d5dSMike Smith     struct acpi_device	*ad;
90815e32d5dSMike Smith 
90915e32d5dSMike Smith     if ((ad = device_get_ivars(child)) == NULL) {
9102d0c82e8SJung-uk Kim 	device_printf(child, "device has no ivars\n");
91115e32d5dSMike Smith 	return (ENOENT);
91215e32d5dSMike Smith     }
91315e32d5dSMike Smith 
914be2b1797SNate Lawson     /* ACPI and ISA compatibility ivars */
91515e32d5dSMike Smith     switch(index) {
91615e32d5dSMike Smith     case ACPI_IVAR_HANDLE:
91715e32d5dSMike Smith 	*(ACPI_HANDLE *)result = ad->ad_handle;
91815e32d5dSMike Smith 	break;
91915e32d5dSMike Smith     case ACPI_IVAR_PRIVATE:
92015e32d5dSMike Smith 	*(void **)result = ad->ad_private;
92115e32d5dSMike Smith 	break;
922d4b9ff91SNate Lawson     case ACPI_IVAR_FLAGS:
923d4b9ff91SNate Lawson 	*(int *)result = ad->ad_flags;
924d4b9ff91SNate Lawson 	break;
92532d18aa5SMike Smith     case ISA_IVAR_VENDORID:
92632d18aa5SMike Smith     case ISA_IVAR_SERIAL:
92732d18aa5SMike Smith     case ISA_IVAR_COMPATID:
92832d18aa5SMike Smith 	*(int *)result = -1;
92932d18aa5SMike Smith 	break;
93032d18aa5SMike Smith     case ISA_IVAR_LOGICALID:
93132d18aa5SMike Smith 	*(int *)result = acpi_isa_get_logicalid(child);
93232d18aa5SMike Smith 	break;
93315e32d5dSMike Smith     default:
93415e32d5dSMike Smith 	return (ENOENT);
93515e32d5dSMike Smith     }
936be2b1797SNate Lawson 
93715e32d5dSMike Smith     return (0);
93815e32d5dSMike Smith }
93915e32d5dSMike Smith 
94015e32d5dSMike Smith static int
94115e32d5dSMike Smith acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
94215e32d5dSMike Smith {
94315e32d5dSMike Smith     struct acpi_device	*ad;
94415e32d5dSMike Smith 
94515e32d5dSMike Smith     if ((ad = device_get_ivars(child)) == NULL) {
9462d0c82e8SJung-uk Kim 	device_printf(child, "device has no ivars\n");
94715e32d5dSMike Smith 	return (ENOENT);
94815e32d5dSMike Smith     }
94915e32d5dSMike Smith 
95015e32d5dSMike Smith     switch(index) {
95115e32d5dSMike Smith     case ACPI_IVAR_HANDLE:
95215e32d5dSMike Smith 	ad->ad_handle = (ACPI_HANDLE)value;
95315e32d5dSMike Smith 	break;
95415e32d5dSMike Smith     case ACPI_IVAR_PRIVATE:
95515e32d5dSMike Smith 	ad->ad_private = (void *)value;
95615e32d5dSMike Smith 	break;
957d4b9ff91SNate Lawson     case ACPI_IVAR_FLAGS:
958d4b9ff91SNate Lawson 	ad->ad_flags = (int)value;
959d4b9ff91SNate Lawson 	break;
96015e32d5dSMike Smith     default:
9612ab060eeSWarner Losh 	panic("bad ivar write request (%d)", index);
96215e32d5dSMike Smith 	return (ENOENT);
96315e32d5dSMike Smith     }
964be2b1797SNate Lawson 
96515e32d5dSMike Smith     return (0);
96615e32d5dSMike Smith }
96715e32d5dSMike Smith 
96815e32d5dSMike Smith /*
96915e32d5dSMike Smith  * Handle child resource allocation/removal
97015e32d5dSMike Smith  */
97191233413SNate Lawson static struct resource_list *
97291233413SNate Lawson acpi_get_rlist(device_t dev, device_t child)
97315e32d5dSMike Smith {
97491233413SNate Lawson     struct acpi_device		*ad;
97515e32d5dSMike Smith 
97691233413SNate Lawson     ad = device_get_ivars(child);
97791233413SNate Lawson     return (&ad->ad_rl);
97815e32d5dSMike Smith }
97915e32d5dSMike Smith 
9800d484d24SJohn Baldwin static int
9810d484d24SJohn Baldwin acpi_match_resource_hint(device_t dev, int type, long value)
9820d484d24SJohn Baldwin {
9830d484d24SJohn Baldwin     struct acpi_device *ad = device_get_ivars(dev);
9840d484d24SJohn Baldwin     struct resource_list *rl = &ad->ad_rl;
9850d484d24SJohn Baldwin     struct resource_list_entry *rle;
9860d484d24SJohn Baldwin 
9870d484d24SJohn Baldwin     STAILQ_FOREACH(rle, rl, link) {
9880d484d24SJohn Baldwin 	if (rle->type != type)
9890d484d24SJohn Baldwin 	    continue;
9900d484d24SJohn Baldwin 	if (rle->start <= value && rle->end >= value)
9910d484d24SJohn Baldwin 	    return (1);
9920d484d24SJohn Baldwin     }
9930d484d24SJohn Baldwin     return (0);
9940d484d24SJohn Baldwin }
9950d484d24SJohn Baldwin 
9960d484d24SJohn Baldwin /*
9970d484d24SJohn Baldwin  * Wire device unit numbers based on resource matches in hints.
9980d484d24SJohn Baldwin  */
9990d484d24SJohn Baldwin static void
10000d484d24SJohn Baldwin acpi_hint_device_unit(device_t acdev, device_t child, const char *name,
10010d484d24SJohn Baldwin     int *unitp)
10020d484d24SJohn Baldwin {
10030d484d24SJohn Baldwin     const char *s;
10040d484d24SJohn Baldwin     long value;
10050d484d24SJohn Baldwin     int line, matches, unit;
10060d484d24SJohn Baldwin 
10070d484d24SJohn Baldwin     /*
10080d484d24SJohn Baldwin      * Iterate over all the hints for the devices with the specified
10090d484d24SJohn Baldwin      * name to see if one's resources are a subset of this device.
10100d484d24SJohn Baldwin      */
10110d484d24SJohn Baldwin     line = 0;
10120d484d24SJohn Baldwin     for (;;) {
10130d484d24SJohn Baldwin 	if (resource_find_dev(&line, name, &unit, "at", NULL) != 0)
10140d484d24SJohn Baldwin 	    break;
10150d484d24SJohn Baldwin 
10160d484d24SJohn Baldwin 	/* Must have an "at" for acpi or isa. */
10170d484d24SJohn Baldwin 	resource_string_value(name, unit, "at", &s);
10180d484d24SJohn Baldwin 	if (!(strcmp(s, "acpi0") == 0 || strcmp(s, "acpi") == 0 ||
10190d484d24SJohn Baldwin 	    strcmp(s, "isa0") == 0 || strcmp(s, "isa") == 0))
10200d484d24SJohn Baldwin 	    continue;
10210d484d24SJohn Baldwin 
10220d484d24SJohn Baldwin 	/*
10232fcd493cSJohn Baldwin 	 * Check for matching resources.  We must have at least one match.
10242fcd493cSJohn Baldwin 	 * Since I/O and memory resources cannot be shared, if we get a
10252fcd493cSJohn Baldwin 	 * match on either of those, ignore any mismatches in IRQs or DRQs.
10260d484d24SJohn Baldwin 	 *
10270d484d24SJohn Baldwin 	 * XXX: We may want to revisit this to be more lenient and wire
10280d484d24SJohn Baldwin 	 * as long as it gets one match.
10290d484d24SJohn Baldwin 	 */
10300d484d24SJohn Baldwin 	matches = 0;
10310d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "port", &value) == 0) {
10322fcd493cSJohn Baldwin 	    /*
10332fcd493cSJohn Baldwin 	     * Floppy drive controllers are notorious for having a
10342fcd493cSJohn Baldwin 	     * wide variety of resources not all of which include the
10352fcd493cSJohn Baldwin 	     * first port that is specified by the hint (typically
10362fcd493cSJohn Baldwin 	     * 0x3f0) (see the comment above fdc_isa_alloc_resources()
10372fcd493cSJohn Baldwin 	     * in fdc_isa.c).  However, they do all seem to include
10382fcd493cSJohn Baldwin 	     * port + 2 (e.g. 0x3f2) so for a floppy device, look for
10392fcd493cSJohn Baldwin 	     * 'value + 2' in the port resources instead of the hint
10402fcd493cSJohn Baldwin 	     * value.
10412fcd493cSJohn Baldwin 	     */
10422fcd493cSJohn Baldwin 	    if (strcmp(name, "fdc") == 0)
10432fcd493cSJohn Baldwin 		value += 2;
10440d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value))
10450d484d24SJohn Baldwin 		matches++;
10460d484d24SJohn Baldwin 	    else
10470d484d24SJohn Baldwin 		continue;
10480d484d24SJohn Baldwin 	}
10490d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "maddr", &value) == 0) {
10500d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_MEMORY, value))
10510d484d24SJohn Baldwin 		matches++;
10520d484d24SJohn Baldwin 	    else
10530d484d24SJohn Baldwin 		continue;
10540d484d24SJohn Baldwin 	}
10552fcd493cSJohn Baldwin 	if (matches > 0)
10562fcd493cSJohn Baldwin 	    goto matched;
10570d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "irq", &value) == 0) {
10580d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_IRQ, value))
10590d484d24SJohn Baldwin 		matches++;
10600d484d24SJohn Baldwin 	    else
10610d484d24SJohn Baldwin 		continue;
10620d484d24SJohn Baldwin 	}
10630d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "drq", &value) == 0) {
10640d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_DRQ, value))
10650d484d24SJohn Baldwin 		matches++;
10660d484d24SJohn Baldwin 	    else
10670d484d24SJohn Baldwin 		continue;
10680d484d24SJohn Baldwin 	}
10690d484d24SJohn Baldwin 
10702fcd493cSJohn Baldwin     matched:
10710d484d24SJohn Baldwin 	if (matches > 0) {
10720d484d24SJohn Baldwin 	    /* We have a winner! */
10730d484d24SJohn Baldwin 	    *unitp = unit;
10740d484d24SJohn Baldwin 	    break;
10750d484d24SJohn Baldwin 	}
10760d484d24SJohn Baldwin     }
10770d484d24SJohn Baldwin }
10780d484d24SJohn Baldwin 
1079adad4744SNate Lawson /*
10805d18c60aSAdrian Chadd  * Fetch the VM domain for the given device 'dev'.
10815d18c60aSAdrian Chadd  *
10825d18c60aSAdrian Chadd  * Return 1 + domain if there's a domain, 0 if not found;
10835d18c60aSAdrian Chadd  * -1 upon an error.
10845d18c60aSAdrian Chadd  */
10855d18c60aSAdrian Chadd int
10865d18c60aSAdrian Chadd acpi_parse_pxm(device_t dev, int *domain)
10875d18c60aSAdrian Chadd {
10885d18c60aSAdrian Chadd #if MAXMEMDOM > 1
10895d18c60aSAdrian Chadd 	ACPI_HANDLE h;
10905d18c60aSAdrian Chadd 	int d, pxm;
10915d18c60aSAdrian Chadd 
10925d18c60aSAdrian Chadd 	h = acpi_get_handle(dev);
10935d18c60aSAdrian Chadd 	if ((h != NULL) &&
10945d18c60aSAdrian Chadd 	    ACPI_SUCCESS(acpi_GetInteger(h, "_PXM", &pxm))) {
10955d18c60aSAdrian Chadd 		d = acpi_map_pxm_to_vm_domainid(pxm);
10965d18c60aSAdrian Chadd 		if (d < 0)
10975d18c60aSAdrian Chadd 			return (-1);
10985d18c60aSAdrian Chadd 		*domain = d;
10995d18c60aSAdrian Chadd 		return (1);
11005d18c60aSAdrian Chadd 	}
11015d18c60aSAdrian Chadd #endif
11025d18c60aSAdrian Chadd 
11035d18c60aSAdrian Chadd 	return (0);
11045d18c60aSAdrian Chadd }
11055d18c60aSAdrian Chadd 
11065d18c60aSAdrian Chadd /*
110715ae88baSJohn Baldwin  * Fetch the NUMA domain for the given device.
1108ffcf962dSAdrian Chadd  *
1109ffcf962dSAdrian Chadd  * If a device has a _PXM method, map that to a NUMA domain.
1110ffcf962dSAdrian Chadd  *
1111ffcf962dSAdrian Chadd  * If none is found, then it'll call the parent method.
1112ffcf962dSAdrian Chadd  * If there's no domain, return ENOENT.
1113ffcf962dSAdrian Chadd  */
1114ffcf962dSAdrian Chadd int
1115ffcf962dSAdrian Chadd acpi_get_domain(device_t dev, device_t child, int *domain)
1116ffcf962dSAdrian Chadd {
11175d18c60aSAdrian Chadd 	int ret;
1118ffcf962dSAdrian Chadd 
11195d18c60aSAdrian Chadd 	ret = acpi_parse_pxm(child, domain);
11205d18c60aSAdrian Chadd 	/* Error */
11215d18c60aSAdrian Chadd 	if (ret == -1)
1122ffcf962dSAdrian Chadd 		return (ENOENT);
11235d18c60aSAdrian Chadd 	/* Found */
11245d18c60aSAdrian Chadd 	if (ret == 1)
1125ffcf962dSAdrian Chadd 		return (0);
11265d18c60aSAdrian Chadd 
1127ffcf962dSAdrian Chadd 	/* No _PXM node; go up a level */
1128ffcf962dSAdrian Chadd 	return (bus_generic_get_domain(dev, child, domain));
1129ffcf962dSAdrian Chadd }
1130ffcf962dSAdrian Chadd 
1131ffcf962dSAdrian Chadd /*
1132adad4744SNate Lawson  * Pre-allocate/manage all memory and IO resources.  Since rman can't handle
1133adad4744SNate Lawson  * duplicates, we merge any in the sysresource attach routine.
1134adad4744SNate Lawson  */
1135adad4744SNate Lawson static int
1136adad4744SNate Lawson acpi_sysres_alloc(device_t dev)
1137adad4744SNate Lawson {
1138adad4744SNate Lawson     struct resource *res;
1139adad4744SNate Lawson     struct resource_list *rl;
1140adad4744SNate Lawson     struct resource_list_entry *rle;
1141adad4744SNate Lawson     struct rman *rm;
1142da72d149SNate Lawson     char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1143da72d149SNate Lawson     device_t *children;
1144da72d149SNate Lawson     int child_count, i;
1145da72d149SNate Lawson 
1146da72d149SNate Lawson     /*
1147da72d149SNate Lawson      * Probe/attach any sysresource devices.  This would be unnecessary if we
1148da72d149SNate Lawson      * had multi-pass probe/attach.
1149da72d149SNate Lawson      */
1150da72d149SNate Lawson     if (device_get_children(dev, &children, &child_count) != 0)
1151da72d149SNate Lawson 	return (ENXIO);
1152da72d149SNate Lawson     for (i = 0; i < child_count; i++) {
1153da72d149SNate Lawson 	if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1154da72d149SNate Lawson 	    device_probe_and_attach(children[i]);
1155da72d149SNate Lawson     }
1156da72d149SNate Lawson     free(children, M_TEMP);
1157adad4744SNate Lawson 
1158adad4744SNate Lawson     rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
1159be1bf4d2SPoul-Henning Kamp     STAILQ_FOREACH(rle, rl, link) {
1160adad4744SNate Lawson 	if (rle->res != NULL) {
1161adad4744SNate Lawson 	    device_printf(dev, "duplicate resource for %lx\n", rle->start);
1162adad4744SNate Lawson 	    continue;
1163adad4744SNate Lawson 	}
1164adad4744SNate Lawson 
1165adad4744SNate Lawson 	/* Only memory and IO resources are valid here. */
1166adad4744SNate Lawson 	switch (rle->type) {
1167adad4744SNate Lawson 	case SYS_RES_IOPORT:
1168adad4744SNate Lawson 	    rm = &acpi_rman_io;
1169adad4744SNate Lawson 	    break;
1170adad4744SNate Lawson 	case SYS_RES_MEMORY:
1171adad4744SNate Lawson 	    rm = &acpi_rman_mem;
1172adad4744SNate Lawson 	    break;
1173adad4744SNate Lawson 	default:
1174adad4744SNate Lawson 	    continue;
1175adad4744SNate Lawson 	}
1176adad4744SNate Lawson 
1177adad4744SNate Lawson 	/* Pre-allocate resource and add to our rman pool. */
1178adad4744SNate Lawson 	res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1179adad4744SNate Lawson 	    &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
1180adad4744SNate Lawson 	if (res != NULL) {
1181adad4744SNate Lawson 	    rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1182adad4744SNate Lawson 	    rle->res = res;
118344947d3aSJohn Baldwin 	} else if (bootverbose)
1184adad4744SNate Lawson 	    device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1185adad4744SNate Lawson 		rle->start, rle->count, rle->type);
1186adad4744SNate Lawson     }
1187adad4744SNate Lawson     return (0);
1188adad4744SNate Lawson }
1189adad4744SNate Lawson 
1190ea233199SJohn Baldwin static char *pcilink_ids[] = { "PNP0C0F", NULL };
1191ea233199SJohn Baldwin static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1192ea233199SJohn Baldwin 
1193ea233199SJohn Baldwin /*
1194ea233199SJohn Baldwin  * Reserve declared resources for devices found during attach once system
1195ea233199SJohn Baldwin  * resources have been allocated.
1196ea233199SJohn Baldwin  */
1197ea233199SJohn Baldwin static void
1198ea233199SJohn Baldwin acpi_reserve_resources(device_t dev)
1199ea233199SJohn Baldwin {
1200ea233199SJohn Baldwin     struct resource_list_entry *rle;
1201ea233199SJohn Baldwin     struct resource_list *rl;
1202ea233199SJohn Baldwin     struct acpi_device *ad;
1203ea233199SJohn Baldwin     struct acpi_softc *sc;
1204ea233199SJohn Baldwin     device_t *children;
1205ea233199SJohn Baldwin     int child_count, i;
1206ea233199SJohn Baldwin 
1207ea233199SJohn Baldwin     sc = device_get_softc(dev);
1208ea233199SJohn Baldwin     if (device_get_children(dev, &children, &child_count) != 0)
1209ea233199SJohn Baldwin 	return;
1210ea233199SJohn Baldwin     for (i = 0; i < child_count; i++) {
1211ea233199SJohn Baldwin 	ad = device_get_ivars(children[i]);
1212ea233199SJohn Baldwin 	rl = &ad->ad_rl;
1213ea233199SJohn Baldwin 
1214ea233199SJohn Baldwin 	/* Don't reserve system resources. */
1215ea233199SJohn Baldwin 	if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1216ea233199SJohn Baldwin 	    continue;
1217ea233199SJohn Baldwin 
1218ea233199SJohn Baldwin 	STAILQ_FOREACH(rle, rl, link) {
1219ea233199SJohn Baldwin 	    /*
1220ea233199SJohn Baldwin 	     * Don't reserve IRQ resources.  There are many sticky things
1221ea233199SJohn Baldwin 	     * to get right otherwise (e.g. IRQs for psm, atkbd, and HPET
1222ea233199SJohn Baldwin 	     * when using legacy routing).
1223ea233199SJohn Baldwin 	     */
1224ea233199SJohn Baldwin 	    if (rle->type == SYS_RES_IRQ)
1225ea233199SJohn Baldwin 		continue;
1226ea233199SJohn Baldwin 
1227ea233199SJohn Baldwin 	    /*
12280d81cf12SJohn Baldwin 	     * Don't reserve the resource if it is already allocated.
12290d81cf12SJohn Baldwin 	     * The acpi_ec(4) driver can allocate its resources early
12300d81cf12SJohn Baldwin 	     * if ECDT is present.
12310d81cf12SJohn Baldwin 	     */
12320d81cf12SJohn Baldwin 	    if (rle->res != NULL)
12330d81cf12SJohn Baldwin 		continue;
12340d81cf12SJohn Baldwin 
12350d81cf12SJohn Baldwin 	    /*
1236ea233199SJohn Baldwin 	     * Try to reserve the resource from our parent.  If this
1237ea233199SJohn Baldwin 	     * fails because the resource is a system resource, just
1238ea233199SJohn Baldwin 	     * let it be.  The resource range is already reserved so
1239ea233199SJohn Baldwin 	     * that other devices will not use it.  If the driver
1240ea233199SJohn Baldwin 	     * needs to allocate the resource, then
1241ea233199SJohn Baldwin 	     * acpi_alloc_resource() will sub-alloc from the system
1242ea233199SJohn Baldwin 	     * resource.
1243ea233199SJohn Baldwin 	     */
1244ea233199SJohn Baldwin 	    resource_list_reserve(rl, dev, children[i], rle->type, &rle->rid,
1245ea233199SJohn Baldwin 		rle->start, rle->end, rle->count, 0);
1246ea233199SJohn Baldwin 	}
1247ea233199SJohn Baldwin     }
1248ea233199SJohn Baldwin     free(children, M_TEMP);
1249ea233199SJohn Baldwin     sc->acpi_resources_reserved = 1;
1250ea233199SJohn Baldwin }
1251ea233199SJohn Baldwin 
1252ea233199SJohn Baldwin static int
1253ea233199SJohn Baldwin acpi_set_resource(device_t dev, device_t child, int type, int rid,
12542dd1bdf1SJustin Hibbits     rman_res_t start, rman_res_t count)
1255ea233199SJohn Baldwin {
1256ea233199SJohn Baldwin     struct acpi_softc *sc = device_get_softc(dev);
1257ea233199SJohn Baldwin     struct acpi_device *ad = device_get_ivars(child);
1258ea233199SJohn Baldwin     struct resource_list *rl = &ad->ad_rl;
12597e3343bfSJohn Baldwin     ACPI_DEVICE_INFO *devinfo;
12602dd1bdf1SJustin Hibbits     rman_res_t end;
1261ea233199SJohn Baldwin 
1262ea233199SJohn Baldwin     /* Ignore IRQ resources for PCI link devices. */
1263ea233199SJohn Baldwin     if (type == SYS_RES_IRQ && ACPI_ID_PROBE(dev, child, pcilink_ids) != NULL)
1264ea233199SJohn Baldwin 	return (0);
1265ea233199SJohn Baldwin 
12667e3343bfSJohn Baldwin     /*
1267d2dc06caSJohn Baldwin      * Ignore most resources for PCI root bridges.  Some BIOSes
12687e3343bfSJohn Baldwin      * incorrectly enumerate the memory ranges they decode as plain
1269d2dc06caSJohn Baldwin      * memory resources instead of as ResourceProducer ranges.  Other
1270d2dc06caSJohn Baldwin      * BIOSes incorrectly list system resource entries for I/O ranges
1271d2dc06caSJohn Baldwin      * under the PCI bridge.  Do allow the one known-correct case on
1272d2dc06caSJohn Baldwin      * x86 of a PCI bridge claiming the I/O ports used for PCI config
1273d2dc06caSJohn Baldwin      * access.
12747e3343bfSJohn Baldwin      */
1275d2dc06caSJohn Baldwin     if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) {
12767e3343bfSJohn Baldwin 	if (ACPI_SUCCESS(AcpiGetObjectInfo(ad->ad_handle, &devinfo))) {
12777e3343bfSJohn Baldwin 	    if ((devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0) {
1278d2dc06caSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
1279d2dc06caSJohn Baldwin 		if (!(type == SYS_RES_IOPORT && start == CONF1_ADDR_PORT))
1280d2dc06caSJohn Baldwin #endif
1281d2dc06caSJohn Baldwin 		{
12827e3343bfSJohn Baldwin 		    AcpiOsFree(devinfo);
12837e3343bfSJohn Baldwin 		    return (0);
12847e3343bfSJohn Baldwin 		}
1285d2dc06caSJohn Baldwin 	    }
12867e3343bfSJohn Baldwin 	    AcpiOsFree(devinfo);
12877e3343bfSJohn Baldwin 	}
12887e3343bfSJohn Baldwin     }
12897e3343bfSJohn Baldwin 
1290ea233199SJohn Baldwin     /* If the resource is already allocated, fail. */
1291ea233199SJohn Baldwin     if (resource_list_busy(rl, type, rid))
1292ea233199SJohn Baldwin 	return (EBUSY);
1293ea233199SJohn Baldwin 
1294ea233199SJohn Baldwin     /* If the resource is already reserved, release it. */
1295ea233199SJohn Baldwin     if (resource_list_reserved(rl, type, rid))
1296ea233199SJohn Baldwin 	resource_list_unreserve(rl, dev, child, type, rid);
1297ea233199SJohn Baldwin 
1298ea233199SJohn Baldwin     /* Add the resource. */
1299ea233199SJohn Baldwin     end = (start + count - 1);
1300ea233199SJohn Baldwin     resource_list_add(rl, type, rid, start, end, count);
1301ea233199SJohn Baldwin 
1302ea233199SJohn Baldwin     /* Don't reserve resources until the system resources are allocated. */
1303ea233199SJohn Baldwin     if (!sc->acpi_resources_reserved)
1304ea233199SJohn Baldwin 	return (0);
1305ea233199SJohn Baldwin 
1306ea233199SJohn Baldwin     /* Don't reserve system resources. */
1307ea233199SJohn Baldwin     if (ACPI_ID_PROBE(dev, child, sysres_ids) != NULL)
1308ea233199SJohn Baldwin 	return (0);
1309ea233199SJohn Baldwin 
1310ea233199SJohn Baldwin     /*
1311ea233199SJohn Baldwin      * Don't reserve IRQ resources.  There are many sticky things to
1312ea233199SJohn Baldwin      * get right otherwise (e.g. IRQs for psm, atkbd, and HPET when
1313ea233199SJohn Baldwin      * using legacy routing).
1314ea233199SJohn Baldwin      */
1315ea233199SJohn Baldwin     if (type == SYS_RES_IRQ)
1316ea233199SJohn Baldwin 	return (0);
1317ea233199SJohn Baldwin 
1318ea233199SJohn Baldwin     /*
1319ea233199SJohn Baldwin      * Reserve the resource.
1320ea233199SJohn Baldwin      *
1321ea233199SJohn Baldwin      * XXX: Ignores failure for now.  Failure here is probably a
1322ea233199SJohn Baldwin      * BIOS/firmware bug?
1323ea233199SJohn Baldwin      */
1324ea233199SJohn Baldwin     resource_list_reserve(rl, dev, child, type, &rid, start, end, count, 0);
1325ea233199SJohn Baldwin     return (0);
1326ea233199SJohn Baldwin }
1327ea233199SJohn Baldwin 
132815e32d5dSMike Smith static struct resource *
132915e32d5dSMike Smith acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
13302dd1bdf1SJustin Hibbits     rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
133115e32d5dSMike Smith {
133295957f62SJohn Baldwin     ACPI_RESOURCE ares;
1333ea233199SJohn Baldwin     struct acpi_device *ad;
133491233413SNate Lawson     struct resource_list_entry *rle;
1335ea233199SJohn Baldwin     struct resource_list *rl;
133691233413SNate Lawson     struct resource *res;
1337ea233199SJohn Baldwin     int isdefault = (start == 0UL && end == ~0UL);
133815e2f34fSNate Lawson 
133991233413SNate Lawson     /*
1340ea233199SJohn Baldwin      * First attempt at allocating the resource.  For direct children,
1341ea233199SJohn Baldwin      * use resource_list_alloc() to handle reserved resources.  For
1342f6133e71SJohn Baldwin      * other devices, pass the request up to our parent.
134391233413SNate Lawson      */
1344ea233199SJohn Baldwin     if (bus == device_get_parent(child)) {
1345ea233199SJohn Baldwin 	ad = device_get_ivars(child);
1346ea233199SJohn Baldwin 	rl = &ad->ad_rl;
134791233413SNate Lawson 
1348397c30a8SJohn Baldwin 	/*
1349ea233199SJohn Baldwin 	 * Simulate the behavior of the ISA bus for direct children
1350ea233199SJohn Baldwin 	 * devices.  That is, if a non-default range is specified for
1351ea233199SJohn Baldwin 	 * a resource that doesn't exist, use bus_set_resource() to
1352ea233199SJohn Baldwin 	 * add the resource before allocating it.  Note that these
1353ea233199SJohn Baldwin 	 * resources will not be reserved.
1354397c30a8SJohn Baldwin 	 */
1355ea233199SJohn Baldwin 	if (!isdefault && resource_list_find(rl, type, *rid) == NULL)
1356ea233199SJohn Baldwin 		resource_list_add(rl, type, *rid, start, end, count);
1357ea233199SJohn Baldwin 	res = resource_list_alloc(rl, bus, child, type, rid, start, end, count,
1358ea233199SJohn Baldwin 	    flags);
1359ea233199SJohn Baldwin 	if (res != NULL && type == SYS_RES_IRQ) {
136095957f62SJohn Baldwin 	    /*
136195957f62SJohn Baldwin 	     * Since bus_config_intr() takes immediate effect, we cannot
136295957f62SJohn Baldwin 	     * configure the interrupt associated with a device when we
136395957f62SJohn Baldwin 	     * parse the resources but have to defer it until a driver
136495957f62SJohn Baldwin 	     * actually allocates the interrupt via bus_alloc_resource().
136595957f62SJohn Baldwin 	     *
136695957f62SJohn Baldwin 	     * XXX: Should we handle the lookup failing?
136795957f62SJohn Baldwin 	     */
136895957f62SJohn Baldwin 	    if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
136995957f62SJohn Baldwin 		acpi_config_intr(child, &ares);
137095957f62SJohn Baldwin 	}
137115e2f34fSNate Lawson 
1372ea233199SJohn Baldwin 	/*
1373ea233199SJohn Baldwin 	 * If this is an allocation of the "default" range for a given
1374ea233199SJohn Baldwin 	 * RID, fetch the exact bounds for this resource from the
1375ea233199SJohn Baldwin 	 * resource list entry to try to allocate the range from the
1376ea233199SJohn Baldwin 	 * system resource regions.
1377ea233199SJohn Baldwin 	 */
1378ea233199SJohn Baldwin 	if (res == NULL && isdefault) {
1379ea233199SJohn Baldwin 	    rle = resource_list_find(rl, type, *rid);
1380ea233199SJohn Baldwin 	    if (rle != NULL) {
1381ea233199SJohn Baldwin 		start = rle->start;
1382ea233199SJohn Baldwin 		end = rle->end;
1383ea233199SJohn Baldwin 		count = rle->count;
1384ea233199SJohn Baldwin 	    }
1385ea233199SJohn Baldwin 	}
1386ea233199SJohn Baldwin     } else
1387ea233199SJohn Baldwin 	res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1388ea233199SJohn Baldwin 	    start, end, count, flags);
1389ea233199SJohn Baldwin 
1390ea233199SJohn Baldwin     /*
1391ea233199SJohn Baldwin      * If the first attempt failed and this is an allocation of a
1392ea233199SJohn Baldwin      * specific range, try to satisfy the request via a suballocation
13935d0d779bSJohn Baldwin      * from our system resource regions.
1394ea233199SJohn Baldwin      */
13955d0d779bSJohn Baldwin     if (res == NULL && start + count - 1 == end)
13965d0d779bSJohn Baldwin 	res = acpi_alloc_sysres(child, type, rid, start, end, count, flags);
13975d0d779bSJohn Baldwin     return (res);
13985d0d779bSJohn Baldwin }
13995d0d779bSJohn Baldwin 
14005d0d779bSJohn Baldwin /*
14015d0d779bSJohn Baldwin  * Attempt to allocate a specific resource range from the system
14025d0d779bSJohn Baldwin  * resource ranges.  Note that we only handle memory and I/O port
14035d0d779bSJohn Baldwin  * system resources.
14045d0d779bSJohn Baldwin  */
14055d0d779bSJohn Baldwin struct resource *
14062dd1bdf1SJustin Hibbits acpi_alloc_sysres(device_t child, int type, int *rid, rman_res_t start,
14072dd1bdf1SJustin Hibbits     rman_res_t end, rman_res_t count, u_int flags)
14085d0d779bSJohn Baldwin {
14095d0d779bSJohn Baldwin     struct rman *rm;
14105d0d779bSJohn Baldwin     struct resource *res;
14115d0d779bSJohn Baldwin 
1412ea233199SJohn Baldwin     switch (type) {
1413ea233199SJohn Baldwin     case SYS_RES_IOPORT:
1414ea233199SJohn Baldwin 	rm = &acpi_rman_io;
1415ea233199SJohn Baldwin 	break;
1416ea233199SJohn Baldwin     case SYS_RES_MEMORY:
1417ea233199SJohn Baldwin 	rm = &acpi_rman_mem;
1418ea233199SJohn Baldwin 	break;
1419ea233199SJohn Baldwin     default:
1420ea233199SJohn Baldwin 	return (NULL);
1421ea233199SJohn Baldwin     }
1422ea233199SJohn Baldwin 
14235d0d779bSJohn Baldwin     KASSERT(start + count - 1 == end, ("wildcard resource range"));
1424ea233199SJohn Baldwin     res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1425ea233199SJohn Baldwin 	child);
1426ea233199SJohn Baldwin     if (res == NULL)
1427ea233199SJohn Baldwin 	return (NULL);
1428ea233199SJohn Baldwin 
1429ea233199SJohn Baldwin     rman_set_rid(res, *rid);
1430ea233199SJohn Baldwin 
1431ea233199SJohn Baldwin     /* If requested, activate the resource using the parent's method. */
1432ea233199SJohn Baldwin     if (flags & RF_ACTIVE)
1433ea233199SJohn Baldwin 	if (bus_activate_resource(child, type, *rid, res) != 0) {
1434ea233199SJohn Baldwin 	    rman_release_resource(res);
1435ea233199SJohn Baldwin 	    return (NULL);
1436ea233199SJohn Baldwin 	}
1437ea233199SJohn Baldwin 
143891233413SNate Lawson     return (res);
143915e32d5dSMike Smith }
144015e32d5dSMike Smith 
144115e32d5dSMike Smith static int
1442049dc0d1SJohn Baldwin acpi_is_resource_managed(int type, struct resource *r)
144315e32d5dSMike Smith {
144415e32d5dSMike Smith 
1445397c30a8SJohn Baldwin     /* We only handle memory and IO resources through rman. */
1446397c30a8SJohn Baldwin     switch (type) {
1447397c30a8SJohn Baldwin     case SYS_RES_IOPORT:
1448049dc0d1SJohn Baldwin 	return (rman_is_region_manager(r, &acpi_rman_io));
1449397c30a8SJohn Baldwin     case SYS_RES_MEMORY:
1450049dc0d1SJohn Baldwin 	return (rman_is_region_manager(r, &acpi_rman_mem));
1451397c30a8SJohn Baldwin     }
1452049dc0d1SJohn Baldwin     return (0);
1453049dc0d1SJohn Baldwin }
1454049dc0d1SJohn Baldwin 
1455049dc0d1SJohn Baldwin static int
1456049dc0d1SJohn Baldwin acpi_adjust_resource(device_t bus, device_t child, int type, struct resource *r,
14572dd1bdf1SJustin Hibbits     rman_res_t start, rman_res_t end)
1458049dc0d1SJohn Baldwin {
1459049dc0d1SJohn Baldwin 
1460049dc0d1SJohn Baldwin     if (acpi_is_resource_managed(type, r))
1461049dc0d1SJohn Baldwin 	return (rman_adjust_resource(r, start, end));
1462049dc0d1SJohn Baldwin     return (bus_generic_adjust_resource(bus, child, type, r, start, end));
1463049dc0d1SJohn Baldwin }
1464049dc0d1SJohn Baldwin 
1465049dc0d1SJohn Baldwin static int
1466049dc0d1SJohn Baldwin acpi_release_resource(device_t bus, device_t child, int type, int rid,
1467049dc0d1SJohn Baldwin     struct resource *r)
1468049dc0d1SJohn Baldwin {
1469049dc0d1SJohn Baldwin     int ret;
1470397c30a8SJohn Baldwin 
147191233413SNate Lawson     /*
1472397c30a8SJohn Baldwin      * If this resource belongs to one of our internal managers,
1473ea233199SJohn Baldwin      * deactivate it and release it to the local pool.
147491233413SNate Lawson      */
1475049dc0d1SJohn Baldwin     if (acpi_is_resource_managed(type, r)) {
147691233413SNate Lawson 	if (rman_get_flags(r) & RF_ACTIVE) {
147791233413SNate Lawson 	    ret = bus_deactivate_resource(child, type, rid, r);
147891233413SNate Lawson 	    if (ret != 0)
147991233413SNate Lawson 		return (ret);
148015e32d5dSMike Smith 	}
1481ea233199SJohn Baldwin 	return (rman_release_resource(r));
1482ea233199SJohn Baldwin     }
1483ea233199SJohn Baldwin 
1484ea233199SJohn Baldwin     return (bus_generic_rl_release_resource(bus, child, type, rid, r));
1485ea233199SJohn Baldwin }
148615e32d5dSMike Smith 
14878b28b622SNate Lawson static void
14888b28b622SNate Lawson acpi_delete_resource(device_t bus, device_t child, int type, int rid)
14898b28b622SNate Lawson {
14908b28b622SNate Lawson     struct resource_list *rl;
14918b28b622SNate Lawson 
14928b28b622SNate Lawson     rl = acpi_get_rlist(bus, child);
1493ea233199SJohn Baldwin     if (resource_list_busy(rl, type, rid)) {
1494ea233199SJohn Baldwin 	device_printf(bus, "delete_resource: Resource still owned by child"
1495ea233199SJohn Baldwin 	    " (type=%d, rid=%d)\n", type, rid);
1496ea233199SJohn Baldwin 	return;
1497ea233199SJohn Baldwin     }
1498ea233199SJohn Baldwin     resource_list_unreserve(rl, bus, child, type, rid);
14998b28b622SNate Lawson     resource_list_delete(rl, type, rid);
15008b28b622SNate Lawson }
15018b28b622SNate Lawson 
1502dc750869SNate Lawson /* Allocate an IO port or memory resource, given its GAS. */
1503e1c4bf3fSNate Lawson int
1504e1c4bf3fSNate Lawson acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1505907b6777SNate Lawson     struct resource **res, u_int flags)
1506dc750869SNate Lawson {
1507e1c4bf3fSNate Lawson     int error, res_type;
1508dc750869SNate Lawson 
1509e1c4bf3fSNate Lawson     error = ENOMEM;
15108f118e25SNate Lawson     if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1511e1c4bf3fSNate Lawson 	return (EINVAL);
1512dc750869SNate Lawson 
15138f118e25SNate Lawson     /* We only support memory and IO spaces. */
15142be4e471SJung-uk Kim     switch (gas->SpaceId) {
1515dc750869SNate Lawson     case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1516e1c4bf3fSNate Lawson 	res_type = SYS_RES_MEMORY;
1517dc750869SNate Lawson 	break;
1518dc750869SNate Lawson     case ACPI_ADR_SPACE_SYSTEM_IO:
1519e1c4bf3fSNate Lawson 	res_type = SYS_RES_IOPORT;
1520dc750869SNate Lawson 	break;
1521dc750869SNate Lawson     default:
1522e1c4bf3fSNate Lawson 	return (EOPNOTSUPP);
1523dc750869SNate Lawson     }
1524dc750869SNate Lawson 
15252fe912dfSNate Lawson     /*
1526f45fc848SNate Lawson      * If the register width is less than 8, assume the BIOS author means
1527f45fc848SNate Lawson      * it is a bit field and just allocate a byte.
15282fe912dfSNate Lawson      */
15292be4e471SJung-uk Kim     if (gas->BitWidth && gas->BitWidth < 8)
15302be4e471SJung-uk Kim 	gas->BitWidth = 8;
15312fe912dfSNate Lawson 
15328f118e25SNate Lawson     /* Validate the address after we're sure we support the space. */
15332be4e471SJung-uk Kim     if (gas->Address == 0 || gas->BitWidth == 0)
15348f118e25SNate Lawson 	return (EINVAL);
15358f118e25SNate Lawson 
1536e1c4bf3fSNate Lawson     bus_set_resource(dev, res_type, *rid, gas->Address,
15372be4e471SJung-uk Kim 	gas->BitWidth / 8);
1538907b6777SNate Lawson     *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1539e1c4bf3fSNate Lawson     if (*res != NULL) {
1540e1c4bf3fSNate Lawson 	*type = res_type;
1541e1c4bf3fSNate Lawson 	error = 0;
1542ca2c69c8SNate Lawson     } else
1543ca2c69c8SNate Lawson 	bus_delete_resource(dev, res_type, *rid);
1544ca2c69c8SNate Lawson 
1545e1c4bf3fSNate Lawson     return (error);
1546dc750869SNate Lawson }
1547dc750869SNate Lawson 
1548c796e27bSNate Lawson /* Probe _HID and _CID for compatible ISA PNP ids. */
15491e4925e8SNate Lawson static uint32_t
155032d18aa5SMike Smith acpi_isa_get_logicalid(device_t dev)
1551bc0f2195SMike Smith {
15521e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
1553bc0f2195SMike Smith     ACPI_HANDLE		h;
155492488a57SJung-uk Kim     uint32_t		pnpid;
155532d18aa5SMike Smith 
1556b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
155732d18aa5SMike Smith 
15586fca9360SNate Lawson     /* Fetch and validate the HID. */
155992488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
156092488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
156192488a57SJung-uk Kim 	return_VALUE (0);
156232d18aa5SMike Smith 
156392488a57SJung-uk Kim     pnpid = (devinfo->Valid & ACPI_VALID_HID) != 0 &&
156492488a57SJung-uk Kim 	devinfo->HardwareId.Length >= ACPI_EISAID_STRING_SIZE ?
156592488a57SJung-uk Kim 	PNP_EISAID(devinfo->HardwareId.String) : 0;
156692488a57SJung-uk Kim     AcpiOsFree(devinfo);
1567be2b1797SNate Lawson 
156832d18aa5SMike Smith     return_VALUE (pnpid);
156932d18aa5SMike Smith }
157032d18aa5SMike Smith 
15711e4925e8SNate Lawson static int
15721e4925e8SNate Lawson acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1573b2566207STakanori Watanabe {
15741e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
15758ef1a331SJung-uk Kim     ACPI_PNP_DEVICE_ID	*ids;
1576b2566207STakanori Watanabe     ACPI_HANDLE		h;
15771e4925e8SNate Lawson     uint32_t		*pnpid;
157892488a57SJung-uk Kim     int			i, valid;
1579b2566207STakanori Watanabe 
1580b2566207STakanori Watanabe     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1581b2566207STakanori Watanabe 
15821e4925e8SNate Lawson     pnpid = cids;
1583bd189fe7SNate Lawson 
15841e4925e8SNate Lawson     /* Fetch and validate the CID */
158592488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
158692488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
158792488a57SJung-uk Kim 	return_VALUE (0);
1588b2566207STakanori Watanabe 
158992488a57SJung-uk Kim     if ((devinfo->Valid & ACPI_VALID_CID) == 0) {
159092488a57SJung-uk Kim 	AcpiOsFree(devinfo);
159192488a57SJung-uk Kim 	return_VALUE (0);
1592b2566207STakanori Watanabe     }
1593b2566207STakanori Watanabe 
159492488a57SJung-uk Kim     if (devinfo->CompatibleIdList.Count < count)
159592488a57SJung-uk Kim 	count = devinfo->CompatibleIdList.Count;
159692488a57SJung-uk Kim     ids = devinfo->CompatibleIdList.Ids;
159792488a57SJung-uk Kim     for (i = 0, valid = 0; i < count; i++)
159892488a57SJung-uk Kim 	if (ids[i].Length >= ACPI_EISAID_STRING_SIZE &&
159992488a57SJung-uk Kim 	    strncmp(ids[i].String, "PNP", 3) == 0) {
160092488a57SJung-uk Kim 	    *pnpid++ = PNP_EISAID(ids[i].String);
160192488a57SJung-uk Kim 	    valid++;
160292488a57SJung-uk Kim 	}
160392488a57SJung-uk Kim     AcpiOsFree(devinfo);
160492488a57SJung-uk Kim 
16051e4925e8SNate Lawson     return_VALUE (valid);
16061e4925e8SNate Lawson }
1607b2566207STakanori Watanabe 
1608ce619b2eSNate Lawson static char *
1609ce619b2eSNate Lawson acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1610ce619b2eSNate Lawson {
1611ce619b2eSNate Lawson     ACPI_HANDLE h;
161292488a57SJung-uk Kim     ACPI_OBJECT_TYPE t;
1613ce619b2eSNate Lawson     int i;
1614ce619b2eSNate Lawson 
1615ce619b2eSNate Lawson     h = acpi_get_handle(dev);
161692488a57SJung-uk Kim     if (ids == NULL || h == NULL)
161792488a57SJung-uk Kim 	return (NULL);
161892488a57SJung-uk Kim     t = acpi_get_type(dev);
161992488a57SJung-uk Kim     if (t != ACPI_TYPE_DEVICE && t != ACPI_TYPE_PROCESSOR)
1620ce619b2eSNate Lawson 	return (NULL);
1621ce619b2eSNate Lawson 
1622ce619b2eSNate Lawson     /* Try to match one of the array of IDs with a HID or CID. */
1623ce619b2eSNate Lawson     for (i = 0; ids[i] != NULL; i++) {
1624ce619b2eSNate Lawson 	if (acpi_MatchHid(h, ids[i]))
1625ce619b2eSNate Lawson 	    return (ids[i]);
1626ce619b2eSNate Lawson     }
1627ce619b2eSNate Lawson     return (NULL);
1628ce619b2eSNate Lawson }
1629ce619b2eSNate Lawson 
1630ce619b2eSNate Lawson static ACPI_STATUS
1631ce619b2eSNate Lawson acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1632ce619b2eSNate Lawson     ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1633ce619b2eSNate Lawson {
1634ce619b2eSNate Lawson     ACPI_HANDLE h;
1635ce619b2eSNate Lawson 
1636df8d2a32SNate Lawson     if (dev == NULL)
1637df8d2a32SNate Lawson 	h = ACPI_ROOT_OBJECT;
1638df8d2a32SNate Lawson     else if ((h = acpi_get_handle(dev)) == NULL)
1639ce619b2eSNate Lawson 	return (AE_BAD_PARAMETER);
1640ce619b2eSNate Lawson     return (AcpiEvaluateObject(h, pathname, parameters, ret));
1641ce619b2eSNate Lawson }
1642ce619b2eSNate Lawson 
164362508c53SJohn Baldwin int
164410ce62b9SNate Lawson acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
164510ce62b9SNate Lawson {
164610ce62b9SNate Lawson     struct acpi_softc *sc;
164710ce62b9SNate Lawson     ACPI_HANDLE handle;
164810ce62b9SNate Lawson     ACPI_STATUS status;
164910ce62b9SNate Lawson     char sxd[8];
165010ce62b9SNate Lawson 
165110ce62b9SNate Lawson     handle = acpi_get_handle(dev);
165210ce62b9SNate Lawson 
165310ce62b9SNate Lawson     /*
165410ce62b9SNate Lawson      * XXX If we find these devices, don't try to power them down.
165510ce62b9SNate Lawson      * The serial and IRDA ports on my T23 hang the system when
165610ce62b9SNate Lawson      * set to D3 and it appears that such legacy devices may
165710ce62b9SNate Lawson      * need special handling in their drivers.
165810ce62b9SNate Lawson      */
1659a7a3177fSJung-uk Kim     if (dstate == NULL || handle == NULL ||
166010ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0500") ||
166110ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0501") ||
166210ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0502") ||
166310ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0510") ||
166410ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0511"))
166510ce62b9SNate Lawson 	return (ENXIO);
166610ce62b9SNate Lawson 
166710ce62b9SNate Lawson     /*
1668a7a3177fSJung-uk Kim      * Override next state with the value from _SxD, if present.
1669a7a3177fSJung-uk Kim      * Note illegal _S0D is evaluated because some systems expect this.
167010ce62b9SNate Lawson      */
1671a7a3177fSJung-uk Kim     sc = device_get_softc(bus);
167210ce62b9SNate Lawson     snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
167310ce62b9SNate Lawson     status = acpi_GetInteger(handle, sxd, dstate);
1674a7a3177fSJung-uk Kim     if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
1675a7a3177fSJung-uk Kim 	    device_printf(dev, "failed to get %s on %s: %s\n", sxd,
1676a7a3177fSJung-uk Kim 		acpi_name(handle), AcpiFormatException(status));
1677a7a3177fSJung-uk Kim 	    return (ENXIO);
167810ce62b9SNate Lawson     }
167910ce62b9SNate Lawson 
1680a7a3177fSJung-uk Kim     return (0);
168110ce62b9SNate Lawson }
168210ce62b9SNate Lawson 
1683df8d2a32SNate Lawson /* Callback arg for our implementation of walking the namespace. */
1684df8d2a32SNate Lawson struct acpi_device_scan_ctx {
1685df8d2a32SNate Lawson     acpi_scan_cb_t	user_fn;
1686df8d2a32SNate Lawson     void		*arg;
1687df8d2a32SNate Lawson     ACPI_HANDLE		parent;
1688df8d2a32SNate Lawson };
1689df8d2a32SNate Lawson 
1690ce619b2eSNate Lawson static ACPI_STATUS
1691df8d2a32SNate Lawson acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1692df8d2a32SNate Lawson {
1693df8d2a32SNate Lawson     struct acpi_device_scan_ctx *ctx;
1694df8d2a32SNate Lawson     device_t dev, old_dev;
1695df8d2a32SNate Lawson     ACPI_STATUS status;
1696df8d2a32SNate Lawson     ACPI_OBJECT_TYPE type;
1697df8d2a32SNate Lawson 
1698df8d2a32SNate Lawson     /*
1699df8d2a32SNate Lawson      * Skip this device if we think we'll have trouble with it or it is
1700df8d2a32SNate Lawson      * the parent where the scan began.
1701df8d2a32SNate Lawson      */
1702df8d2a32SNate Lawson     ctx = (struct acpi_device_scan_ctx *)arg;
1703df8d2a32SNate Lawson     if (acpi_avoid(h) || h == ctx->parent)
1704df8d2a32SNate Lawson 	return (AE_OK);
1705df8d2a32SNate Lawson 
1706df8d2a32SNate Lawson     /* If this is not a valid device type (e.g., a method), skip it. */
1707df8d2a32SNate Lawson     if (ACPI_FAILURE(AcpiGetType(h, &type)))
1708df8d2a32SNate Lawson 	return (AE_OK);
1709df8d2a32SNate Lawson     if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1710df8d2a32SNate Lawson 	type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1711df8d2a32SNate Lawson 	return (AE_OK);
1712df8d2a32SNate Lawson 
1713df8d2a32SNate Lawson     /*
1714df8d2a32SNate Lawson      * Call the user function with the current device.  If it is unchanged
1715df8d2a32SNate Lawson      * afterwards, return.  Otherwise, we update the handle to the new dev.
1716df8d2a32SNate Lawson      */
1717df8d2a32SNate Lawson     old_dev = acpi_get_device(h);
1718df8d2a32SNate Lawson     dev = old_dev;
1719df8d2a32SNate Lawson     status = ctx->user_fn(h, &dev, level, ctx->arg);
1720df8d2a32SNate Lawson     if (ACPI_FAILURE(status) || old_dev == dev)
1721df8d2a32SNate Lawson 	return (status);
1722df8d2a32SNate Lawson 
1723df8d2a32SNate Lawson     /* Remove the old child and its connection to the handle. */
1724df8d2a32SNate Lawson     if (old_dev != NULL) {
1725df8d2a32SNate Lawson 	device_delete_child(device_get_parent(old_dev), old_dev);
1726df8d2a32SNate Lawson 	AcpiDetachData(h, acpi_fake_objhandler);
1727df8d2a32SNate Lawson     }
1728df8d2a32SNate Lawson 
1729df8d2a32SNate Lawson     /* Recreate the handle association if the user created a device. */
1730df8d2a32SNate Lawson     if (dev != NULL)
1731df8d2a32SNate Lawson 	AcpiAttachData(h, acpi_fake_objhandler, dev);
1732df8d2a32SNate Lawson 
1733df8d2a32SNate Lawson     return (AE_OK);
1734df8d2a32SNate Lawson }
1735df8d2a32SNate Lawson 
1736df8d2a32SNate Lawson static ACPI_STATUS
1737df8d2a32SNate Lawson acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1738df8d2a32SNate Lawson     acpi_scan_cb_t user_fn, void *arg)
1739ce619b2eSNate Lawson {
1740ce619b2eSNate Lawson     ACPI_HANDLE h;
1741df8d2a32SNate Lawson     struct acpi_device_scan_ctx ctx;
1742ce619b2eSNate Lawson 
1743df8d2a32SNate Lawson     if (acpi_disabled("children"))
1744df8d2a32SNate Lawson 	return (AE_OK);
1745df8d2a32SNate Lawson 
1746df8d2a32SNate Lawson     if (dev == NULL)
1747df8d2a32SNate Lawson 	h = ACPI_ROOT_OBJECT;
1748df8d2a32SNate Lawson     else if ((h = acpi_get_handle(dev)) == NULL)
1749ce619b2eSNate Lawson 	return (AE_BAD_PARAMETER);
1750df8d2a32SNate Lawson     ctx.user_fn = user_fn;
1751df8d2a32SNate Lawson     ctx.arg = arg;
1752df8d2a32SNate Lawson     ctx.parent = h;
1753df8d2a32SNate Lawson     return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
17542272d050SJung-uk Kim 	acpi_device_scan_cb, NULL, &ctx, NULL));
1755ce619b2eSNate Lawson }
1756ce619b2eSNate Lawson 
175710ce62b9SNate Lawson /*
175810ce62b9SNate Lawson  * Even though ACPI devices are not PCI, we use the PCI approach for setting
175910ce62b9SNate Lawson  * device power states since it's close enough to ACPI.
176010ce62b9SNate Lawson  */
176110ce62b9SNate Lawson static int
1762a7a3177fSJung-uk Kim acpi_set_powerstate(device_t child, int state)
176310ce62b9SNate Lawson {
176410ce62b9SNate Lawson     ACPI_HANDLE h;
176510ce62b9SNate Lawson     ACPI_STATUS status;
176610ce62b9SNate Lawson 
176710ce62b9SNate Lawson     h = acpi_get_handle(child);
1768a0e73a12SJung-uk Kim     if (state < ACPI_STATE_D0 || state > ACPI_D_STATES_MAX)
176910ce62b9SNate Lawson 	return (EINVAL);
177010ce62b9SNate Lawson     if (h == NULL)
177110ce62b9SNate Lawson 	return (0);
177210ce62b9SNate Lawson 
177310ce62b9SNate Lawson     /* Ignore errors if the power methods aren't present. */
177410ce62b9SNate Lawson     status = acpi_pwr_switch_consumer(h, state);
1775a7a3177fSJung-uk Kim     if (ACPI_SUCCESS(status)) {
1776a7a3177fSJung-uk Kim 	if (bootverbose)
1777a7a3177fSJung-uk Kim 	    device_printf(child, "set ACPI power state D%d on %s\n",
1778a7a3177fSJung-uk Kim 		state, acpi_name(h));
1779a7a3177fSJung-uk Kim     } else if (status != AE_NOT_FOUND)
1780a7a3177fSJung-uk Kim 	device_printf(child,
1781a7a3177fSJung-uk Kim 	    "failed to set ACPI power state D%d on %s: %s\n", state,
1782a7a3177fSJung-uk Kim 	    acpi_name(h), AcpiFormatException(status));
178310ce62b9SNate Lawson 
1784a7a3177fSJung-uk Kim     return (0);
178510ce62b9SNate Lawson }
178610ce62b9SNate Lawson 
178732d18aa5SMike Smith static int
178832d18aa5SMike Smith acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
178932d18aa5SMike Smith {
17901e4925e8SNate Lawson     int			result, cid_count, i;
17911e4925e8SNate Lawson     uint32_t		lid, cids[8];
1792bc0f2195SMike Smith 
1793b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1794bc0f2195SMike Smith 
1795bc0f2195SMike Smith     /*
1796bc0f2195SMike Smith      * ISA-style drivers attached to ACPI may persist and
1797bc0f2195SMike Smith      * probe manually if we return ENOENT.  We never want
1798bc0f2195SMike Smith      * that to happen, so don't ever return it.
1799bc0f2195SMike Smith      */
1800bc0f2195SMike Smith     result = ENXIO;
1801bc0f2195SMike Smith 
1802be2b1797SNate Lawson     /* Scan the supplied IDs for a match */
1803b2566207STakanori Watanabe     lid = acpi_isa_get_logicalid(child);
18041e4925e8SNate Lawson     cid_count = acpi_isa_get_compatid(child, cids, 8);
1805bc0f2195SMike Smith     while (ids && ids->ip_id) {
18061e4925e8SNate Lawson 	if (lid == ids->ip_id) {
1807bc0f2195SMike Smith 	    result = 0;
1808bc0f2195SMike Smith 	    goto out;
1809bc0f2195SMike Smith 	}
18101e4925e8SNate Lawson 	for (i = 0; i < cid_count; i++) {
18111e4925e8SNate Lawson 	    if (cids[i] == ids->ip_id) {
18121e4925e8SNate Lawson 		result = 0;
18131e4925e8SNate Lawson 		goto out;
18141e4925e8SNate Lawson 	    }
18151e4925e8SNate Lawson 	}
1816bc0f2195SMike Smith 	ids++;
1817bc0f2195SMike Smith     }
1818be2b1797SNate Lawson 
1819bc0f2195SMike Smith  out:
18209e0dd54fSNate Lawson     if (result == 0 && ids->ip_desc)
18219e0dd54fSNate Lawson 	device_set_desc(child, ids->ip_desc);
18229e0dd54fSNate Lawson 
1823bc0f2195SMike Smith     return_VALUE (result);
1824bc0f2195SMike Smith }
1825bc0f2195SMike Smith 
1826d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
1827d320e05cSJohn Baldwin /*
1828d320e05cSJohn Baldwin  * Look for a MCFG table.  If it is present, use the settings for
1829d320e05cSJohn Baldwin  * domain (segment) 0 to setup PCI config space access via the memory
1830d320e05cSJohn Baldwin  * map.
1831d320e05cSJohn Baldwin  */
1832d320e05cSJohn Baldwin static void
1833d320e05cSJohn Baldwin acpi_enable_pcie(void)
1834d320e05cSJohn Baldwin {
1835d320e05cSJohn Baldwin 	ACPI_TABLE_HEADER *hdr;
1836d320e05cSJohn Baldwin 	ACPI_MCFG_ALLOCATION *alloc, *end;
1837d320e05cSJohn Baldwin 	ACPI_STATUS status;
1838d320e05cSJohn Baldwin 
1839d320e05cSJohn Baldwin 	status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1840d320e05cSJohn Baldwin 	if (ACPI_FAILURE(status))
1841d320e05cSJohn Baldwin 		return;
1842d320e05cSJohn Baldwin 
1843d320e05cSJohn Baldwin 	end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1844d320e05cSJohn Baldwin 	alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1845d320e05cSJohn Baldwin 	while (alloc < end) {
1846d320e05cSJohn Baldwin 		if (alloc->PciSegment == 0) {
1847d320e05cSJohn Baldwin 			pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1848d320e05cSJohn Baldwin 			    alloc->EndBusNumber);
1849d320e05cSJohn Baldwin 			return;
1850d320e05cSJohn Baldwin 		}
1851d320e05cSJohn Baldwin 		alloc++;
1852d320e05cSJohn Baldwin 	}
1853d320e05cSJohn Baldwin }
1854d320e05cSJohn Baldwin #endif
1855d320e05cSJohn Baldwin 
1856bc0f2195SMike Smith /*
185733332dc2SNate Lawson  * Scan all of the ACPI namespace and attach child devices.
185815e32d5dSMike Smith  *
185933332dc2SNate Lawson  * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
186033332dc2SNate Lawson  * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
186133332dc2SNate Lawson  * However, in violation of the spec, some systems place their PCI link
186233332dc2SNate Lawson  * devices in \, so we have to walk the whole namespace.  We check the
186333332dc2SNate Lawson  * type of namespace nodes, so this should be ok.
186415e32d5dSMike Smith  */
186515e32d5dSMike Smith static void
186615e32d5dSMike Smith acpi_probe_children(device_t bus)
186715e32d5dSMike Smith {
186815e32d5dSMike Smith 
1869b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
18700ae55423SMike Smith 
187115e32d5dSMike Smith     /*
187215e32d5dSMike Smith      * Scan the namespace and insert placeholders for all the devices that
1873edc13633SNate Lawson      * we find.  We also probe/attach any early devices.
187415e32d5dSMike Smith      *
187515e32d5dSMike Smith      * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1876be2b1797SNate Lawson      * we want to create nodes for all devices, not just those that are
1877be2b1797SNate Lawson      * currently present. (This assumes that we don't want to create/remove
1878be2b1797SNate Lawson      * devices as they appear, which might be smarter.)
187915e32d5dSMike Smith      */
18804c1cdee6SMike Smith     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
188133332dc2SNate Lawson     AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child,
18822272d050SJung-uk Kim 	NULL, bus, NULL);
188315e32d5dSMike Smith 
1884adad4744SNate Lawson     /* Pre-allocate resources for our rman from any sysresource devices. */
1885adad4744SNate Lawson     acpi_sysres_alloc(bus);
1886adad4744SNate Lawson 
1887ea233199SJohn Baldwin     /* Reserve resources already allocated to children. */
1888ea233199SJohn Baldwin     acpi_reserve_resources(bus);
1889ea233199SJohn Baldwin 
1890edc13633SNate Lawson     /* Create any static children by calling device identify methods. */
1891edc13633SNate Lawson     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1892edc13633SNate Lawson     bus_generic_probe(bus);
1893edc13633SNate Lawson 
18945e66b8e2SJohn Baldwin     /* Probe/attach all children, created statically and from the namespace. */
18950430ba9eSAndriy Gapon     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "acpi bus_generic_attach\n"));
189615e32d5dSMike Smith     bus_generic_attach(bus);
18970ae55423SMike Smith 
189888a79fc0SNate Lawson     /* Attach wake sysctls. */
18995c9ea25eSNate Lawson     acpi_wake_sysctl_walk(bus);
190088a79fc0SNate Lawson 
1901bc0f2195SMike Smith     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
19020ae55423SMike Smith     return_VOID;
190315e32d5dSMike Smith }
190415e32d5dSMike Smith 
1905b82ca9a9SNate Lawson /*
1906d227204dSJohn Baldwin  * Determine the probe order for a given device.
1907b82ca9a9SNate Lawson  */
1908d227204dSJohn Baldwin static void
1909b82ca9a9SNate Lawson acpi_probe_order(ACPI_HANDLE handle, int *order)
191091233413SNate Lawson {
1911463e0f91SJohn Baldwin 	ACPI_OBJECT_TYPE type;
191291233413SNate Lawson 
1913b82ca9a9SNate Lawson 	/*
1914404b0d10SJung-uk Kim 	 * 0. CPUs
1915404b0d10SJung-uk Kim 	 * 1. I/O port and memory system resource holders
1916404b0d10SJung-uk Kim 	 * 2. Clocks and timers (to handle early accesses)
1917b1f9b996SAndriy Gapon 	 * 3. Embedded controllers (to handle early accesses)
1918b1f9b996SAndriy Gapon 	 * 4. PCI Link Devices
1919b82ca9a9SNate Lawson 	 */
1920463e0f91SJohn Baldwin 	AcpiGetType(handle, &type);
1921aa835160SAndriy Gapon 	if (type == ACPI_TYPE_PROCESSOR)
1922404b0d10SJung-uk Kim 		*order = 0;
1923404b0d10SJung-uk Kim 	else if (acpi_MatchHid(handle, "PNP0C01") ||
1924404b0d10SJung-uk Kim 	    acpi_MatchHid(handle, "PNP0C02"))
192591233413SNate Lawson 		*order = 1;
1926404b0d10SJung-uk Kim 	else if (acpi_MatchHid(handle, "PNP0100") ||
1927404b0d10SJung-uk Kim 	    acpi_MatchHid(handle, "PNP0103") ||
1928404b0d10SJung-uk Kim 	    acpi_MatchHid(handle, "PNP0B00"))
192991233413SNate Lawson 		*order = 2;
1930aa835160SAndriy Gapon 	else if (acpi_MatchHid(handle, "PNP0C09"))
1931b460c6f8SJohn Baldwin 		*order = 3;
1932aa835160SAndriy Gapon 	else if (acpi_MatchHid(handle, "PNP0C0F"))
1933aa835160SAndriy Gapon 		*order = 4;
193491233413SNate Lawson }
193591233413SNate Lawson 
193615e32d5dSMike Smith /*
193715e32d5dSMike Smith  * Evaluate a child device and determine whether we might attach a device to
193815e32d5dSMike Smith  * it.
193915e32d5dSMike Smith  */
194015e32d5dSMike Smith static ACPI_STATUS
194115e32d5dSMike Smith acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
194215e32d5dSMike Smith {
19435a77b11bSJung-uk Kim     struct acpi_prw_data prw;
194415e32d5dSMike Smith     ACPI_OBJECT_TYPE type;
1945858a52f4SMitsuru IWASAKI     ACPI_HANDLE h;
194633332dc2SNate Lawson     device_t bus, child;
1947495a4144SJung-uk Kim     char *handle_str;
1948e4cd9dcfSJohn Baldwin     int order;
194915e32d5dSMike Smith 
1950b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
19510ae55423SMike Smith 
1952495a4144SJung-uk Kim     if (acpi_disabled("children"))
1953495a4144SJung-uk Kim 	return_ACPI_STATUS (AE_OK);
1954495a4144SJung-uk Kim 
1955be2b1797SNate Lawson     /* Skip this device if we think we'll have trouble with it. */
19560ae55423SMike Smith     if (acpi_avoid(handle))
19570ae55423SMike Smith 	return_ACPI_STATUS (AE_OK);
19580ae55423SMike Smith 
195991233413SNate Lawson     bus = (device_t)context;
1960b53f2771SMike Smith     if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1961495a4144SJung-uk Kim 	handle_str = acpi_name(handle);
196215e32d5dSMike Smith 	switch (type) {
196315e32d5dSMike Smith 	case ACPI_TYPE_DEVICE:
1964495a4144SJung-uk Kim 	    /*
1965495a4144SJung-uk Kim 	     * Since we scan from \, be sure to skip system scope objects.
1966495a4144SJung-uk Kim 	     * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
1967affa1826SJung-uk Kim 	     * BIOS bugs.  For example, \_SB_ is to allow \_SB_._INI to be run
1968495a4144SJung-uk Kim 	     * during the intialization and \_TZ_ is to support Notify() on it.
1969495a4144SJung-uk Kim 	     */
1970495a4144SJung-uk Kim 	    if (strcmp(handle_str, "\\_SB_") == 0 ||
1971495a4144SJung-uk Kim 		strcmp(handle_str, "\\_TZ_") == 0)
1972495a4144SJung-uk Kim 		break;
19735a77b11bSJung-uk Kim 	    if (acpi_parse_prw(handle, &prw) == 0)
19745a77b11bSJung-uk Kim 		AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
1975183c8af3SJohn Baldwin 
1976183c8af3SJohn Baldwin 	    /*
1977183c8af3SJohn Baldwin 	     * Ignore devices that do not have a _HID or _CID.  They should
1978183c8af3SJohn Baldwin 	     * be discovered by other buses (e.g. the PCI bus driver).
1979183c8af3SJohn Baldwin 	     */
1980183c8af3SJohn Baldwin 	    if (!acpi_has_hid(handle))
1981183c8af3SJohn Baldwin 		break;
1982495a4144SJung-uk Kim 	    /* FALLTHROUGH */
198315e32d5dSMike Smith 	case ACPI_TYPE_PROCESSOR:
198415e32d5dSMike Smith 	case ACPI_TYPE_THERMAL:
198515e32d5dSMike Smith 	case ACPI_TYPE_POWER:
198633332dc2SNate Lawson 	    /*
1987463e0f91SJohn Baldwin 	     * Create a placeholder device for this node.  Sort the
1988463e0f91SJohn Baldwin 	     * placeholder so that the probe/attach passes will run
1989463e0f91SJohn Baldwin 	     * breadth-first.  Orders less than ACPI_DEV_BASE_ORDER
1990463e0f91SJohn Baldwin 	     * are reserved for special objects (i.e., system
1991b1f9b996SAndriy Gapon 	     * resources).
199215e32d5dSMike Smith 	     */
199333332dc2SNate Lawson 	    ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1994404b0d10SJung-uk Kim 	    order = level * 10 + ACPI_DEV_BASE_ORDER;
1995da72d149SNate Lawson 	    acpi_probe_order(handle, &order);
1996e4cd9dcfSJohn Baldwin 	    child = BUS_ADD_CHILD(bus, order, NULL, -1);
1997bc0f2195SMike Smith 	    if (child == NULL)
1998bc0f2195SMike Smith 		break;
199959a890e6SNate Lawson 
200059a890e6SNate Lawson 	    /* Associate the handle with the device_t and vice versa. */
200115e32d5dSMike Smith 	    acpi_set_handle(child, handle);
200259a890e6SNate Lawson 	    AcpiAttachData(handle, acpi_fake_objhandler, child);
2003bc0f2195SMike Smith 
2004bc0f2195SMike Smith 	    /*
2005b519f9d6SMike Smith 	     * Check that the device is present.  If it's not present,
2006b519f9d6SMike Smith 	     * leave it disabled (so that we have a device_t attached to
2007b519f9d6SMike Smith 	     * the handle, but we don't probe it).
2008893f750aSNate Lawson 	     *
2009893f750aSNate Lawson 	     * XXX PCI link devices sometimes report "present" but not
2010893f750aSNate Lawson 	     * "functional" (i.e. if disabled).  Go ahead and probe them
2011893f750aSNate Lawson 	     * anyway since we may enable them later.
2012b519f9d6SMike Smith 	     */
2013858a52f4SMitsuru IWASAKI 	    if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
2014858a52f4SMitsuru IWASAKI 		/* Never disable PCI link devices. */
2015858a52f4SMitsuru IWASAKI 		if (acpi_MatchHid(handle, "PNP0C0F"))
2016858a52f4SMitsuru IWASAKI 		    break;
2017858a52f4SMitsuru IWASAKI 		/*
2018858a52f4SMitsuru IWASAKI 		 * Docking stations should remain enabled since the system
2019858a52f4SMitsuru IWASAKI 		 * may be undocked at boot.
2020858a52f4SMitsuru IWASAKI 		 */
2021858a52f4SMitsuru IWASAKI 		if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
2022858a52f4SMitsuru IWASAKI 		    break;
2023858a52f4SMitsuru IWASAKI 
2024b519f9d6SMike Smith 		device_disable(child);
2025b519f9d6SMike Smith 		break;
2026b519f9d6SMike Smith 	    }
2027b519f9d6SMike Smith 
2028b519f9d6SMike Smith 	    /*
2029bc0f2195SMike Smith 	     * Get the device's resource settings and attach them.
2030bc0f2195SMike Smith 	     * Note that if the device has _PRS but no _CRS, we need
2031bc0f2195SMike Smith 	     * to decide when it's appropriate to try to configure the
2032bc0f2195SMike Smith 	     * device.  Ignore the return value here; it's OK for the
2033bc0f2195SMike Smith 	     * device not to have any resources.
2034bc0f2195SMike Smith 	     */
203572ad60adSNate Lawson 	    acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
20360ae55423SMike Smith 	    break;
203715e32d5dSMike Smith 	}
203815e32d5dSMike Smith     }
2039be2b1797SNate Lawson 
20400ae55423SMike Smith     return_ACPI_STATUS (AE_OK);
204115e32d5dSMike Smith }
204215e32d5dSMike Smith 
204359a890e6SNate Lawson /*
204459a890e6SNate Lawson  * AcpiAttachData() requires an object handler but never uses it.  This is a
204559a890e6SNate Lawson  * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
204659a890e6SNate Lawson  */
204759a890e6SNate Lawson void
204892488a57SJung-uk Kim acpi_fake_objhandler(ACPI_HANDLE h, void *data)
204959a890e6SNate Lawson {
205059a890e6SNate Lawson }
205159a890e6SNate Lawson 
205215e32d5dSMike Smith static void
205315e32d5dSMike Smith acpi_shutdown_final(void *arg, int howto)
205415e32d5dSMike Smith {
20552d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
205671804adcSJung-uk Kim     register_t intr;
2057d33f4987STakanori Watanabe     ACPI_STATUS status;
2058eeb3a05fSNate Lawson 
2059eeb3a05fSNate Lawson     /*
206080f0e4c2SNate Lawson      * XXX Shutdown code should only run on the BSP (cpuid 0).
206180f0e4c2SNate Lawson      * Some chipsets do not power off the system correctly if called from
206280f0e4c2SNate Lawson      * an AP.
2063eeb3a05fSNate Lawson      */
2064eeb3a05fSNate Lawson     if ((howto & RB_POWEROFF) != 0) {
2065904bf0c2SNate Lawson 	status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
2066904bf0c2SNate Lawson 	if (ACPI_FAILURE(status)) {
20672d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2068904bf0c2SNate Lawson 		AcpiFormatException(status));
2069904bf0c2SNate Lawson 	    return;
2070904bf0c2SNate Lawson 	}
20712d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev, "Powering system off\n");
207271804adcSJung-uk Kim 	intr = intr_disable();
20731df130f1SJung-uk Kim 	status = AcpiEnterSleepState(ACPI_STATE_S5);
207471804adcSJung-uk Kim 	if (ACPI_FAILURE(status)) {
207571804adcSJung-uk Kim 	    intr_restore(intr);
20762d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "power-off failed - %s\n",
20772d0c82e8SJung-uk Kim 		AcpiFormatException(status));
207871804adcSJung-uk Kim 	} else {
207915e32d5dSMike Smith 	    DELAY(1000000);
208071804adcSJung-uk Kim 	    intr_restore(intr);
20812d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "power-off failed - timeout\n");
208215e32d5dSMike Smith 	}
2083ac731af5SJung-uk Kim     } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) {
2084d85e6785SNate Lawson 	/* Reboot using the reset register. */
2085ac731af5SJung-uk Kim 	status = AcpiReset();
2086ac731af5SJung-uk Kim 	if (ACPI_SUCCESS(status)) {
208787a500cdSNate Lawson 	    DELAY(1000000);
20882d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "reset failed - timeout\n");
2089ac731af5SJung-uk Kim 	} else if (status != AE_NOT_EXIST)
2090ac731af5SJung-uk Kim 	    device_printf(sc->acpi_dev, "reset failed - %s\n",
2091ac731af5SJung-uk Kim 		AcpiFormatException(status));
2092d85e6785SNate Lawson     } else if (sc->acpi_do_disable && panicstr == NULL) {
2093d85e6785SNate Lawson 	/*
2094d85e6785SNate Lawson 	 * Only disable ACPI if the user requested.  On some systems, writing
2095d85e6785SNate Lawson 	 * the disable value to SMI_CMD hangs the system.
2096d85e6785SNate Lawson 	 */
20972d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev, "Shutting down\n");
209880f0e4c2SNate Lawson 	AcpiTerminate();
209980f0e4c2SNate Lawson     }
210015e32d5dSMike Smith }
210115e32d5dSMike Smith 
210213d4f7baSMitsuru IWASAKI static void
210313d4f7baSMitsuru IWASAKI acpi_enable_fixed_events(struct acpi_softc *sc)
210413d4f7baSMitsuru IWASAKI {
210513d4f7baSMitsuru IWASAKI     static int	first_time = 1;
210613d4f7baSMitsuru IWASAKI 
210713d4f7baSMitsuru IWASAKI     /* Enable and clear fixed events and install handlers. */
21082be4e471SJung-uk Kim     if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
210959ddeb18SNate Lawson 	AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
211013d4f7baSMitsuru IWASAKI 	AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
211133febf93SNate Lawson 				     acpi_event_power_button_sleep, sc);
2112be2b1797SNate Lawson 	if (first_time)
21136c0e8467SNate Lawson 	    device_printf(sc->acpi_dev, "Power Button (fixed)\n");
211413d4f7baSMitsuru IWASAKI     }
21152be4e471SJung-uk Kim     if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
211659ddeb18SNate Lawson 	AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
211713d4f7baSMitsuru IWASAKI 	AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
211833febf93SNate Lawson 				     acpi_event_sleep_button_sleep, sc);
2119be2b1797SNate Lawson 	if (first_time)
21206c0e8467SNate Lawson 	    device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
212113d4f7baSMitsuru IWASAKI     }
212213d4f7baSMitsuru IWASAKI 
212313d4f7baSMitsuru IWASAKI     first_time = 0;
212413d4f7baSMitsuru IWASAKI }
212513d4f7baSMitsuru IWASAKI 
212615e32d5dSMike Smith /*
2127c5ba0be4SMike Smith  * Returns true if the device is actually present and should
2128c5ba0be4SMike Smith  * be attached to.  This requires the present, enabled, UI-visible
2129c5ba0be4SMike Smith  * and diagnostics-passed bits to be set.
2130c5ba0be4SMike Smith  */
2131c5ba0be4SMike Smith BOOLEAN
2132c5ba0be4SMike Smith acpi_DeviceIsPresent(device_t dev)
2133c5ba0be4SMike Smith {
21341e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
2135c5ba0be4SMike Smith     ACPI_HANDLE		h;
213692488a57SJung-uk Kim     BOOLEAN		present;
2137c5ba0be4SMike Smith 
213892488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
213992488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2140c5ba0be4SMike Smith 	return (FALSE);
2141be2b1797SNate Lawson 
2142be2b1797SNate Lawson     /* If no _STA method, must be present */
214392488a57SJung-uk Kim     present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
214492488a57SJung-uk Kim 	ACPI_DEVICE_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
2145be2b1797SNate Lawson 
214692488a57SJung-uk Kim     AcpiOsFree(devinfo);
214792488a57SJung-uk Kim     return (present);
2148c5ba0be4SMike Smith }
2149c5ba0be4SMike Smith 
2150c5ba0be4SMike Smith /*
2151b53f2771SMike Smith  * Returns true if the battery is actually present and inserted.
2152b53f2771SMike Smith  */
2153b53f2771SMike Smith BOOLEAN
2154b53f2771SMike Smith acpi_BatteryIsPresent(device_t dev)
2155b53f2771SMike Smith {
21561e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
2157b53f2771SMike Smith     ACPI_HANDLE		h;
215892488a57SJung-uk Kim     BOOLEAN		present;
2159b53f2771SMike Smith 
216092488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
216192488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2162b53f2771SMike Smith 	return (FALSE);
2163be2b1797SNate Lawson 
2164be2b1797SNate Lawson     /* If no _STA method, must be present */
216592488a57SJung-uk Kim     present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
216692488a57SJung-uk Kim 	ACPI_BATTERY_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
2167be2b1797SNate Lawson 
216892488a57SJung-uk Kim     AcpiOsFree(devinfo);
216992488a57SJung-uk Kim     return (present);
2170b53f2771SMike Smith }
2171b53f2771SMike Smith 
2172b53f2771SMike Smith /*
2173183c8af3SJohn Baldwin  * Returns true if a device has at least one valid device ID.
2174183c8af3SJohn Baldwin  */
2175183c8af3SJohn Baldwin static BOOLEAN
2176183c8af3SJohn Baldwin acpi_has_hid(ACPI_HANDLE h)
2177183c8af3SJohn Baldwin {
2178183c8af3SJohn Baldwin     ACPI_DEVICE_INFO	*devinfo;
2179183c8af3SJohn Baldwin     BOOLEAN		ret;
2180183c8af3SJohn Baldwin 
2181183c8af3SJohn Baldwin     if (h == NULL ||
2182183c8af3SJohn Baldwin 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2183183c8af3SJohn Baldwin 	return (FALSE);
2184183c8af3SJohn Baldwin 
2185183c8af3SJohn Baldwin     ret = FALSE;
2186183c8af3SJohn Baldwin     if ((devinfo->Valid & ACPI_VALID_HID) != 0)
2187183c8af3SJohn Baldwin 	ret = TRUE;
2188183c8af3SJohn Baldwin     else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
2189183c8af3SJohn Baldwin 	if (devinfo->CompatibleIdList.Count > 0)
2190183c8af3SJohn Baldwin 	    ret = TRUE;
2191183c8af3SJohn Baldwin 
2192183c8af3SJohn Baldwin     AcpiOsFree(devinfo);
2193183c8af3SJohn Baldwin     return (ret);
2194183c8af3SJohn Baldwin }
2195183c8af3SJohn Baldwin 
2196183c8af3SJohn Baldwin /*
219791233413SNate Lawson  * Match a HID string against a handle
219815e32d5dSMike Smith  */
21993c4c08dcSAlexander Motin BOOLEAN
2200ce619b2eSNate Lawson acpi_MatchHid(ACPI_HANDLE h, const char *hid)
220115e32d5dSMike Smith {
22021e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
220392488a57SJung-uk Kim     BOOLEAN		ret;
220492488a57SJung-uk Kim     int			i;
220592488a57SJung-uk Kim 
220692488a57SJung-uk Kim     if (hid == NULL || h == NULL ||
220792488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
220892488a57SJung-uk Kim 	return (FALSE);
220915e32d5dSMike Smith 
22101e4925e8SNate Lawson     ret = FALSE;
2211c59c9a8eSJohn Baldwin     if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
221292488a57SJung-uk Kim 	strcmp(hid, devinfo->HardwareId.String) == 0)
22131e4925e8SNate Lawson 	    ret = TRUE;
221492488a57SJung-uk Kim     else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
221592488a57SJung-uk Kim 	for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
221692488a57SJung-uk Kim 	    if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
22171e4925e8SNate Lawson 		ret = TRUE;
22181e4925e8SNate Lawson 		break;
22191e4925e8SNate Lawson 	    }
22201e4925e8SNate Lawson 	}
2221be2b1797SNate Lawson 
222292488a57SJung-uk Kim     AcpiOsFree(devinfo);
22231e4925e8SNate Lawson     return (ret);
222415e32d5dSMike Smith }
222515e32d5dSMike Smith 
222615e32d5dSMike Smith /*
2227c5ba0be4SMike Smith  * Return the handle of a named object within our scope, ie. that of (parent)
2228c5ba0be4SMike Smith  * or one if its parents.
2229c5ba0be4SMike Smith  */
2230c5ba0be4SMike Smith ACPI_STATUS
2231c5ba0be4SMike Smith acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
2232c5ba0be4SMike Smith {
2233c5ba0be4SMike Smith     ACPI_HANDLE		r;
2234c5ba0be4SMike Smith     ACPI_STATUS		status;
2235c5ba0be4SMike Smith 
2236be2b1797SNate Lawson     /* Walk back up the tree to the root */
2237c5ba0be4SMike Smith     for (;;) {
2238be2b1797SNate Lawson 	status = AcpiGetHandle(parent, path, &r);
2239be2b1797SNate Lawson 	if (ACPI_SUCCESS(status)) {
2240c5ba0be4SMike Smith 	    *result = r;
2241c5ba0be4SMike Smith 	    return (AE_OK);
2242c5ba0be4SMike Smith 	}
2243bee4aa4aSNate Lawson 	/* XXX Return error here? */
2244c5ba0be4SMike Smith 	if (status != AE_NOT_FOUND)
2245c5ba0be4SMike Smith 	    return (AE_OK);
2246b53f2771SMike Smith 	if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
2247c5ba0be4SMike Smith 	    return (AE_NOT_FOUND);
2248c5ba0be4SMike Smith 	parent = r;
2249c5ba0be4SMike Smith     }
2250c5ba0be4SMike Smith }
2251c5ba0be4SMike Smith 
2252c5ba0be4SMike Smith /*
2253c5ba0be4SMike Smith  * Allocate a buffer with a preset data size.
2254c5ba0be4SMike Smith  */
2255c5ba0be4SMike Smith ACPI_BUFFER *
2256c5ba0be4SMike Smith acpi_AllocBuffer(int size)
2257c5ba0be4SMike Smith {
2258c5ba0be4SMike Smith     ACPI_BUFFER	*buf;
2259c5ba0be4SMike Smith 
2260c5ba0be4SMike Smith     if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
2261c5ba0be4SMike Smith 	return (NULL);
2262c5ba0be4SMike Smith     buf->Length = size;
2263c5ba0be4SMike Smith     buf->Pointer = (void *)(buf + 1);
2264c5ba0be4SMike Smith     return (buf);
2265c5ba0be4SMike Smith }
2266c5ba0be4SMike Smith 
2267c310653eSNate Lawson ACPI_STATUS
2268cc58e4eeSNate Lawson acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
2269c310653eSNate Lawson {
2270c310653eSNate Lawson     ACPI_OBJECT arg1;
2271c310653eSNate Lawson     ACPI_OBJECT_LIST args;
2272c310653eSNate Lawson 
2273c310653eSNate Lawson     arg1.Type = ACPI_TYPE_INTEGER;
2274c310653eSNate Lawson     arg1.Integer.Value = number;
2275c310653eSNate Lawson     args.Count = 1;
2276c310653eSNate Lawson     args.Pointer = &arg1;
2277c310653eSNate Lawson 
2278c310653eSNate Lawson     return (AcpiEvaluateObject(handle, path, &args, NULL));
2279c310653eSNate Lawson }
2280c310653eSNate Lawson 
2281c5ba0be4SMike Smith /*
2282c5ba0be4SMike Smith  * Evaluate a path that should return an integer.
2283c5ba0be4SMike Smith  */
2284c5ba0be4SMike Smith ACPI_STATUS
2285cc58e4eeSNate Lawson acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
2286c5ba0be4SMike Smith {
2287be2b1797SNate Lawson     ACPI_STATUS	status;
2288c5ba0be4SMike Smith     ACPI_BUFFER	buf;
2289c573e654SMitsuru IWASAKI     ACPI_OBJECT	param;
2290c5ba0be4SMike Smith 
2291c5ba0be4SMike Smith     if (handle == NULL)
2292c5ba0be4SMike Smith 	handle = ACPI_ROOT_OBJECT;
22930c7da7acSJohn Baldwin 
22940c7da7acSJohn Baldwin     /*
22950c7da7acSJohn Baldwin      * Assume that what we've been pointed at is an Integer object, or
22960c7da7acSJohn Baldwin      * a method that will return an Integer.
22970c7da7acSJohn Baldwin      */
2298c5ba0be4SMike Smith     buf.Pointer = &param;
2299c5ba0be4SMike Smith     buf.Length = sizeof(param);
2300be2b1797SNate Lawson     status = AcpiEvaluateObject(handle, path, NULL, &buf);
2301be2b1797SNate Lawson     if (ACPI_SUCCESS(status)) {
2302be2b1797SNate Lawson 	if (param.Type == ACPI_TYPE_INTEGER)
2303c5ba0be4SMike Smith 	    *number = param.Integer.Value;
2304be2b1797SNate Lawson 	else
2305be2b1797SNate Lawson 	    status = AE_TYPE;
2306c5ba0be4SMike Smith     }
23070c7da7acSJohn Baldwin 
23080c7da7acSJohn Baldwin     /*
23090c7da7acSJohn Baldwin      * In some applications, a method that's expected to return an Integer
23100c7da7acSJohn Baldwin      * may instead return a Buffer (probably to simplify some internal
23110c7da7acSJohn Baldwin      * arithmetic).  We'll try to fetch whatever it is, and if it's a Buffer,
23120c7da7acSJohn Baldwin      * convert it into an Integer as best we can.
23130c7da7acSJohn Baldwin      *
23140c7da7acSJohn Baldwin      * This is a hack.
23150c7da7acSJohn Baldwin      */
2316be2b1797SNate Lawson     if (status == AE_BUFFER_OVERFLOW) {
2317b53f2771SMike Smith 	if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
2318be2b1797SNate Lawson 	    status = AE_NO_MEMORY;
23190c7da7acSJohn Baldwin 	} else {
2320be2b1797SNate Lawson 	    status = AcpiEvaluateObject(handle, path, NULL, &buf);
2321be2b1797SNate Lawson 	    if (ACPI_SUCCESS(status))
2322be2b1797SNate Lawson 		status = acpi_ConvertBufferToInteger(&buf, number);
23230c7da7acSJohn Baldwin 	    AcpiOsFree(buf.Pointer);
23240c7da7acSJohn Baldwin 	}
2325f97739daSNate Lawson     }
2326be2b1797SNate Lawson     return (status);
2327c5ba0be4SMike Smith }
2328c5ba0be4SMike Smith 
2329c573e654SMitsuru IWASAKI ACPI_STATUS
2330cc58e4eeSNate Lawson acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2331c573e654SMitsuru IWASAKI {
2332c573e654SMitsuru IWASAKI     ACPI_OBJECT	*p;
2333dba55fa2SNate Lawson     UINT8	*val;
2334c573e654SMitsuru IWASAKI     int		i;
2335c573e654SMitsuru IWASAKI 
2336c573e654SMitsuru IWASAKI     p = (ACPI_OBJECT *)bufp->Pointer;
2337c573e654SMitsuru IWASAKI     if (p->Type == ACPI_TYPE_INTEGER) {
2338c573e654SMitsuru IWASAKI 	*number = p->Integer.Value;
2339c573e654SMitsuru IWASAKI 	return (AE_OK);
2340c573e654SMitsuru IWASAKI     }
2341c573e654SMitsuru IWASAKI     if (p->Type != ACPI_TYPE_BUFFER)
2342c573e654SMitsuru IWASAKI 	return (AE_TYPE);
2343c573e654SMitsuru IWASAKI     if (p->Buffer.Length > sizeof(int))
2344c573e654SMitsuru IWASAKI 	return (AE_BAD_DATA);
2345be2b1797SNate Lawson 
2346c573e654SMitsuru IWASAKI     *number = 0;
2347dba55fa2SNate Lawson     val = p->Buffer.Pointer;
2348c573e654SMitsuru IWASAKI     for (i = 0; i < p->Buffer.Length; i++)
2349dba55fa2SNate Lawson 	*number += val[i] << (i * 8);
2350c573e654SMitsuru IWASAKI     return (AE_OK);
2351c573e654SMitsuru IWASAKI }
2352c573e654SMitsuru IWASAKI 
2353c5ba0be4SMike Smith /*
2354c5ba0be4SMike Smith  * Iterate over the elements of an a package object, calling the supplied
2355c5ba0be4SMike Smith  * function for each element.
2356c5ba0be4SMike Smith  *
2357c5ba0be4SMike Smith  * XXX possible enhancement might be to abort traversal on error.
2358c5ba0be4SMike Smith  */
2359c5ba0be4SMike Smith ACPI_STATUS
2360be2b1797SNate Lawson acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2361be2b1797SNate Lawson 	void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2362c5ba0be4SMike Smith {
2363c5ba0be4SMike Smith     ACPI_OBJECT	*comp;
2364c5ba0be4SMike Smith     int		i;
2365c5ba0be4SMike Smith 
2366be2b1797SNate Lawson     if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2367c5ba0be4SMike Smith 	return (AE_BAD_PARAMETER);
2368c5ba0be4SMike Smith 
2369be2b1797SNate Lawson     /* Iterate over components */
2370be2b1797SNate Lawson     i = 0;
2371be2b1797SNate Lawson     comp = pkg->Package.Elements;
2372be2b1797SNate Lawson     for (; i < pkg->Package.Count; i++, comp++)
2373c5ba0be4SMike Smith 	func(comp, arg);
2374c5ba0be4SMike Smith 
2375c5ba0be4SMike Smith     return (AE_OK);
2376c5ba0be4SMike Smith }
2377c5ba0be4SMike Smith 
23786f69255bSMike Smith /*
23796f69255bSMike Smith  * Find the (index)th resource object in a set.
23806f69255bSMike Smith  */
23816f69255bSMike Smith ACPI_STATUS
23826d63101aSMike Smith acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
23836f69255bSMike Smith {
23846d63101aSMike Smith     ACPI_RESOURCE	*rp;
23856f69255bSMike Smith     int			i;
23866f69255bSMike Smith 
23876d63101aSMike Smith     rp = (ACPI_RESOURCE *)buf->Pointer;
23886f69255bSMike Smith     i = index;
23896d63101aSMike Smith     while (i-- > 0) {
2390be2b1797SNate Lawson 	/* Range check */
23916d63101aSMike Smith 	if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
23926f69255bSMike Smith 	    return (AE_BAD_PARAMETER);
2393be2b1797SNate Lawson 
2394be2b1797SNate Lawson 	/* Check for terminator */
2395e8d472a7SJung-uk Kim 	if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
23966d63101aSMike Smith 	    return (AE_NOT_FOUND);
2397abcbc5bcSNate Lawson 	rp = ACPI_NEXT_RESOURCE(rp);
23986f69255bSMike Smith     }
23996f69255bSMike Smith     if (resp != NULL)
24006d63101aSMike Smith 	*resp = rp;
2401be2b1797SNate Lawson 
24026d63101aSMike Smith     return (AE_OK);
24036d63101aSMike Smith }
24046d63101aSMike Smith 
24056d63101aSMike Smith /*
24066d63101aSMike Smith  * Append an ACPI_RESOURCE to an ACPI_BUFFER.
24076d63101aSMike Smith  *
24086d63101aSMike Smith  * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
24096d63101aSMike Smith  * provided to contain it.  If the ACPI_BUFFER is empty, allocate a sensible
24106d63101aSMike Smith  * backing block.  If the ACPI_RESOURCE is NULL, return an empty set of
24116d63101aSMike Smith  * resources.
24126d63101aSMike Smith  */
24136d63101aSMike Smith #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE	512
24146d63101aSMike Smith 
24156d63101aSMike Smith ACPI_STATUS
24166d63101aSMike Smith acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
24176d63101aSMike Smith {
24186d63101aSMike Smith     ACPI_RESOURCE	*rp;
24196d63101aSMike Smith     void		*newp;
24206d63101aSMike Smith 
2421be2b1797SNate Lawson     /* Initialise the buffer if necessary. */
24226d63101aSMike Smith     if (buf->Pointer == NULL) {
24236d63101aSMike Smith 	buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
24246d63101aSMike Smith 	if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
24256d63101aSMike Smith 	    return (AE_NO_MEMORY);
24266d63101aSMike Smith 	rp = (ACPI_RESOURCE *)buf->Pointer;
2427e8d472a7SJung-uk Kim 	rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
242860d306f0SJohn Baldwin 	rp->Length = ACPI_RS_SIZE_MIN;
24296d63101aSMike Smith     }
24306d63101aSMike Smith     if (res == NULL)
24316d63101aSMike Smith 	return (AE_OK);
24326d63101aSMike Smith 
24336d63101aSMike Smith     /*
24346d63101aSMike Smith      * Scan the current buffer looking for the terminator.
24356d63101aSMike Smith      * This will either find the terminator or hit the end
24366d63101aSMike Smith      * of the buffer and return an error.
24376d63101aSMike Smith      */
24386d63101aSMike Smith     rp = (ACPI_RESOURCE *)buf->Pointer;
24396d63101aSMike Smith     for (;;) {
2440be2b1797SNate Lawson 	/* Range check, don't go outside the buffer */
24416d63101aSMike Smith 	if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
24426d63101aSMike Smith 	    return (AE_BAD_PARAMETER);
2443e8d472a7SJung-uk Kim 	if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
24446d63101aSMike Smith 	    break;
2445abcbc5bcSNate Lawson 	rp = ACPI_NEXT_RESOURCE(rp);
24466d63101aSMike Smith     }
24476d63101aSMike Smith 
24486d63101aSMike Smith     /*
24496d63101aSMike Smith      * Check the size of the buffer and expand if required.
24506d63101aSMike Smith      *
24516d63101aSMike Smith      * Required size is:
24526d63101aSMike Smith      *	size of existing resources before terminator +
24536d63101aSMike Smith      *	size of new resource and header +
24546d63101aSMike Smith      * 	size of terminator.
24556d63101aSMike Smith      *
24566d63101aSMike Smith      * Note that this loop should really only run once, unless
24576d63101aSMike Smith      * for some reason we are stuffing a *really* huge resource.
24586d63101aSMike Smith      */
24596d63101aSMike Smith     while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
2460e8d472a7SJung-uk Kim 	    res->Length + ACPI_RS_SIZE_NO_DATA +
2461e8d472a7SJung-uk Kim 	    ACPI_RS_SIZE_MIN) >= buf->Length) {
24626d63101aSMike Smith 	if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
24636d63101aSMike Smith 	    return (AE_NO_MEMORY);
24646d63101aSMike Smith 	bcopy(buf->Pointer, newp, buf->Length);
2465a692219dSMike Smith 	rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2466a692219dSMike Smith 			       ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
24676d63101aSMike Smith 	AcpiOsFree(buf->Pointer);
24686d63101aSMike Smith 	buf->Pointer = newp;
24696d63101aSMike Smith 	buf->Length += buf->Length;
24706d63101aSMike Smith     }
24716d63101aSMike Smith 
2472be2b1797SNate Lawson     /* Insert the new resource. */
2473e8d472a7SJung-uk Kim     bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
24746d63101aSMike Smith 
2475be2b1797SNate Lawson     /* And add the terminator. */
2476abcbc5bcSNate Lawson     rp = ACPI_NEXT_RESOURCE(rp);
2477e8d472a7SJung-uk Kim     rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
247860d306f0SJohn Baldwin     rp->Length = ACPI_RS_SIZE_MIN;
24796d63101aSMike Smith 
24806f69255bSMike Smith     return (AE_OK);
24816f69255bSMike Smith }
2482c5ba0be4SMike Smith 
2483da14ac9fSJohn Baldwin /*
2484da14ac9fSJohn Baldwin  * Set interrupt model.
2485da14ac9fSJohn Baldwin  */
2486da14ac9fSJohn Baldwin ACPI_STATUS
2487da14ac9fSJohn Baldwin acpi_SetIntrModel(int model)
2488da14ac9fSJohn Baldwin {
2489da14ac9fSJohn Baldwin 
2490c310653eSNate Lawson     return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2491da14ac9fSJohn Baldwin }
2492da14ac9fSJohn Baldwin 
249300a30448SNate Lawson /*
2494d95e7f5aSJohn Baldwin  * Walk subtables of a table and call a callback routine for each
2495d95e7f5aSJohn Baldwin  * subtable.  The caller should provide the first subtable and a
2496d95e7f5aSJohn Baldwin  * pointer to the end of the table.  This can be used to walk tables
2497d95e7f5aSJohn Baldwin  * such as MADT and SRAT that use subtable entries.
2498d95e7f5aSJohn Baldwin  */
2499d95e7f5aSJohn Baldwin void
2500d95e7f5aSJohn Baldwin acpi_walk_subtables(void *first, void *end, acpi_subtable_handler *handler,
2501d95e7f5aSJohn Baldwin     void *arg)
2502d95e7f5aSJohn Baldwin {
2503d95e7f5aSJohn Baldwin     ACPI_SUBTABLE_HEADER *entry;
2504d95e7f5aSJohn Baldwin 
2505d95e7f5aSJohn Baldwin     for (entry = first; (void *)entry < end; ) {
2506d95e7f5aSJohn Baldwin 	/* Avoid an infinite loop if we hit a bogus entry. */
2507d95e7f5aSJohn Baldwin 	if (entry->Length < sizeof(ACPI_SUBTABLE_HEADER))
2508d95e7f5aSJohn Baldwin 	    return;
2509d95e7f5aSJohn Baldwin 
2510d95e7f5aSJohn Baldwin 	handler(entry, arg);
2511d95e7f5aSJohn Baldwin 	entry = ACPI_ADD_PTR(ACPI_SUBTABLE_HEADER, entry, entry->Length);
2512d95e7f5aSJohn Baldwin     }
2513d95e7f5aSJohn Baldwin }
2514d95e7f5aSJohn Baldwin 
2515d95e7f5aSJohn Baldwin /*
251600a30448SNate Lawson  * DEPRECATED.  This interface has serious deficiencies and will be
251700a30448SNate Lawson  * removed.
251800a30448SNate Lawson  *
251900a30448SNate Lawson  * Immediately enter the sleep state.  In the old model, acpiconf(8) ran
252000a30448SNate Lawson  * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
252100a30448SNate Lawson  */
252200a30448SNate Lawson ACPI_STATUS
252300a30448SNate Lawson acpi_SetSleepState(struct acpi_softc *sc, int state)
252400a30448SNate Lawson {
252500a30448SNate Lawson     static int once;
252600a30448SNate Lawson 
252700a30448SNate Lawson     if (!once) {
25282d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
252900a30448SNate Lawson "warning: acpi_SetSleepState() deprecated, need to update your software\n");
253000a30448SNate Lawson 	once = 1;
253100a30448SNate Lawson     }
253200a30448SNate Lawson     return (acpi_EnterSleepState(sc, state));
253300a30448SNate Lawson }
253400a30448SNate Lawson 
2535c66d2b38SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
253600a30448SNate Lawson static void
2537ffe3f1f8SMitsuru IWASAKI acpi_sleep_force_task(void *context)
2538ffe3f1f8SMitsuru IWASAKI {
2539ffe3f1f8SMitsuru IWASAKI     struct acpi_softc *sc = (struct acpi_softc *)context;
2540ffe3f1f8SMitsuru IWASAKI 
2541ffe3f1f8SMitsuru IWASAKI     if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2542ffe3f1f8SMitsuru IWASAKI 	device_printf(sc->acpi_dev, "force sleep state S%d failed\n",
2543ffe3f1f8SMitsuru IWASAKI 	    sc->acpi_next_sstate);
2544ffe3f1f8SMitsuru IWASAKI }
2545ffe3f1f8SMitsuru IWASAKI 
2546ffe3f1f8SMitsuru IWASAKI static void
254700a30448SNate Lawson acpi_sleep_force(void *arg)
254800a30448SNate Lawson {
25492d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
255000a30448SNate Lawson 
25512d0c82e8SJung-uk Kim     device_printf(sc->acpi_dev,
25522d0c82e8SJung-uk Kim 	"suspend request timed out, forcing sleep now\n");
2553ffe3f1f8SMitsuru IWASAKI     /*
2554fadf3fb9SJohn Baldwin      * XXX Suspending from callout causes freezes in DEVICE_SUSPEND().
2555ffe3f1f8SMitsuru IWASAKI      * Suspend from acpi_task thread instead.
2556ffe3f1f8SMitsuru IWASAKI      */
2557ffe3f1f8SMitsuru IWASAKI     if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
2558ffe3f1f8SMitsuru IWASAKI 	acpi_sleep_force_task, sc)))
2559ffe3f1f8SMitsuru IWASAKI 	device_printf(sc->acpi_dev, "AcpiOsExecute() for sleeping failed\n");
256000a30448SNate Lawson }
2561c66d2b38SJung-uk Kim #endif
256200a30448SNate Lawson 
256300a30448SNate Lawson /*
256400a30448SNate Lawson  * Request that the system enter the given suspend state.  All /dev/apm
256500a30448SNate Lawson  * devices and devd(8) will be notified.  Userland then has a chance to
256600a30448SNate Lawson  * save state and acknowledge the request.  The system sleeps once all
256700a30448SNate Lawson  * acks are in.
256800a30448SNate Lawson  */
256900a30448SNate Lawson int
257000a30448SNate Lawson acpi_ReqSleepState(struct acpi_softc *sc, int state)
257100a30448SNate Lawson {
257271f99e63SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
257300a30448SNate Lawson     struct apm_clone_data *clone;
2574337744d9SJung-uk Kim     ACPI_STATUS status;
257500a30448SNate Lawson 
2576a0e73a12SJung-uk Kim     if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
257700a30448SNate Lawson 	return (EINVAL);
2578a0e73a12SJung-uk Kim     if (!acpi_sleep_states[state])
2579a0e73a12SJung-uk Kim 	return (EOPNOTSUPP);
258000a30448SNate Lawson 
25812eb0015aSColin Percival     /*
25822eb0015aSColin Percival      * If a reboot/shutdown/suspend request is already in progress or
25832eb0015aSColin Percival      * suspend is blocked due to an upcoming shutdown, just return.
25842eb0015aSColin Percival      */
25852eb0015aSColin Percival     if (rebooting || sc->acpi_next_sstate != 0 || suspend_blocked) {
2586b12bc99fSMitsuru IWASAKI 	return (0);
2587b12bc99fSMitsuru IWASAKI     }
2588b12bc99fSMitsuru IWASAKI 
2589f22377a8SMitsuru IWASAKI     /* Wait until sleep is enabled. */
2590f22377a8SMitsuru IWASAKI     while (sc->acpi_sleep_disabled) {
2591f22377a8SMitsuru IWASAKI 	AcpiOsSleep(1000);
2592f22377a8SMitsuru IWASAKI     }
2593f22377a8SMitsuru IWASAKI 
2594337744d9SJung-uk Kim     ACPI_LOCK(acpi);
259500a30448SNate Lawson 
2596f22377a8SMitsuru IWASAKI     sc->acpi_next_sstate = state;
259700a30448SNate Lawson 
2598337744d9SJung-uk Kim     /* S5 (soft-off) should be entered directly with no waiting. */
2599337744d9SJung-uk Kim     if (state == ACPI_STATE_S5) {
2600337744d9SJung-uk Kim     	ACPI_UNLOCK(acpi);
2601337744d9SJung-uk Kim 	status = acpi_EnterSleepState(sc, state);
2602337744d9SJung-uk Kim 	return (ACPI_SUCCESS(status) ? 0 : ENXIO);
2603337744d9SJung-uk Kim     }
2604337744d9SJung-uk Kim 
260500a30448SNate Lawson     /* Record the pending state and notify all apm devices. */
260600a30448SNate Lawson     STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
260700a30448SNate Lawson 	clone->notify_status = APM_EV_NONE;
260800a30448SNate Lawson 	if ((clone->flags & ACPI_EVF_DEVD) == 0) {
260900a30448SNate Lawson 	    selwakeuppri(&clone->sel_read, PZERO);
2610374d9c4dSJohn Baldwin 	    KNOTE_LOCKED(&clone->sel_read.si_note, 0);
261100a30448SNate Lawson 	}
261200a30448SNate Lawson     }
261300a30448SNate Lawson 
26140c26519eSMitsuru IWASAKI     /* If devd(8) is not running, immediately enter the sleep state. */
2615d42f0ad8SJung-uk Kim     if (!devctl_process_running()) {
26160c26519eSMitsuru IWASAKI 	ACPI_UNLOCK(acpi);
2617337744d9SJung-uk Kim 	status = acpi_EnterSleepState(sc, state);
2618337744d9SJung-uk Kim 	return (ACPI_SUCCESS(status) ? 0 : ENXIO);
26190c26519eSMitsuru IWASAKI     }
26200c26519eSMitsuru IWASAKI 
262100a30448SNate Lawson     /*
262200a30448SNate Lawson      * Set a timeout to fire if userland doesn't ack the suspend request
262300a30448SNate Lawson      * in time.  This way we still eventually go to sleep if we were
262400a30448SNate Lawson      * overheating or running low on battery, even if userland is hung.
262500a30448SNate Lawson      * We cancel this timeout once all userland acks are in or the
262600a30448SNate Lawson      * suspend request is aborted.
262700a30448SNate Lawson      */
262800a30448SNate Lawson     callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
262900a30448SNate Lawson     ACPI_UNLOCK(acpi);
2630d42f0ad8SJung-uk Kim 
2631d42f0ad8SJung-uk Kim     /* Now notify devd(8) also. */
2632d42f0ad8SJung-uk Kim     acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2633d42f0ad8SJung-uk Kim 
263400a30448SNate Lawson     return (0);
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 
264100a30448SNate Lawson /*
264200a30448SNate Lawson  * Acknowledge (or reject) a pending sleep state.  The caller has
264300a30448SNate Lawson  * prepared for suspend and is now ready for it to proceed.  If the
264400a30448SNate Lawson  * error argument is non-zero, it indicates suspend should be cancelled
264500a30448SNate Lawson  * and gives an errno value describing why.  Once all votes are in,
264600a30448SNate Lawson  * we suspend the system.
264700a30448SNate Lawson  */
264800a30448SNate Lawson int
264900a30448SNate Lawson acpi_AckSleepState(struct apm_clone_data *clone, int error)
265000a30448SNate Lawson {
2651c66d2b38SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
265200a30448SNate Lawson     struct acpi_softc *sc;
265300a30448SNate Lawson     int ret, sleeping;
265400a30448SNate Lawson 
265500a30448SNate Lawson     /* If no pending sleep state, return an error. */
265600a30448SNate Lawson     ACPI_LOCK(acpi);
265700a30448SNate Lawson     sc = clone->acpi_sc;
265800a30448SNate Lawson     if (sc->acpi_next_sstate == 0) {
265900a30448SNate Lawson     	ACPI_UNLOCK(acpi);
266000a30448SNate Lawson 	return (ENXIO);
266100a30448SNate Lawson     }
266200a30448SNate Lawson 
266300a30448SNate Lawson     /* Caller wants to abort suspend process. */
266400a30448SNate Lawson     if (error) {
266500a30448SNate Lawson 	sc->acpi_next_sstate = 0;
266600a30448SNate Lawson 	callout_stop(&sc->susp_force_to);
26672d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
26682d0c82e8SJung-uk Kim 	    "listener on %s cancelled the pending suspend\n",
266900a30448SNate Lawson 	    devtoname(clone->cdev));
267000a30448SNate Lawson     	ACPI_UNLOCK(acpi);
267100a30448SNate Lawson 	return (0);
267200a30448SNate Lawson     }
267300a30448SNate Lawson 
267400a30448SNate Lawson     /*
267500a30448SNate Lawson      * Mark this device as acking the suspend request.  Then, walk through
267600a30448SNate Lawson      * all devices, seeing if they agree yet.  We only count devices that
267700a30448SNate Lawson      * are writable since read-only devices couldn't ack the request.
267800a30448SNate Lawson      */
267900a30448SNate Lawson     sleeping = TRUE;
2680c66d2b38SJung-uk Kim     clone->notify_status = APM_EV_ACKED;
268100a30448SNate Lawson     STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
268200a30448SNate Lawson 	if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
268300a30448SNate Lawson 	    clone->notify_status != APM_EV_ACKED) {
268400a30448SNate Lawson 	    sleeping = FALSE;
268500a30448SNate Lawson 	    break;
268600a30448SNate Lawson 	}
268700a30448SNate Lawson     }
268800a30448SNate Lawson 
268900a30448SNate Lawson     /* If all devices have voted "yes", we will suspend now. */
269000a30448SNate Lawson     if (sleeping)
269100a30448SNate Lawson 	callout_stop(&sc->susp_force_to);
269200a30448SNate Lawson     ACPI_UNLOCK(acpi);
269300a30448SNate Lawson     ret = 0;
269400a30448SNate Lawson     if (sleeping) {
269500a30448SNate Lawson 	if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
269600a30448SNate Lawson 		ret = ENODEV;
269700a30448SNate Lawson     }
269800a30448SNate Lawson     return (ret);
2699c66d2b38SJung-uk Kim #else
2700c66d2b38SJung-uk Kim     /* This platform does not support acpi suspend/resume. */
2701c66d2b38SJung-uk Kim     return (EOPNOTSUPP);
2702c66d2b38SJung-uk Kim #endif
270300a30448SNate Lawson }
270400a30448SNate Lawson 
2705ece50487SMitsuru IWASAKI static void
2706ece50487SMitsuru IWASAKI acpi_sleep_enable(void *arg)
2707ece50487SMitsuru IWASAKI {
2708d42f0ad8SJung-uk Kim     struct acpi_softc	*sc = (struct acpi_softc *)arg;
2709bee4aa4aSNate Lawson 
2710fadf3fb9SJohn Baldwin     ACPI_LOCK_ASSERT(acpi);
2711fadf3fb9SJohn Baldwin 
2712a0e73a12SJung-uk Kim     /* Reschedule if the system is not fully up and running. */
2713a0e73a12SJung-uk Kim     if (!AcpiGbl_SystemAwakeAndRunning) {
2714fadf3fb9SJohn Baldwin 	callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME);
2715a0e73a12SJung-uk Kim 	return;
2716a0e73a12SJung-uk Kim     }
2717a0e73a12SJung-uk Kim 
2718a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = FALSE;
2719d42f0ad8SJung-uk Kim }
2720d42f0ad8SJung-uk Kim 
2721d42f0ad8SJung-uk Kim static ACPI_STATUS
2722d42f0ad8SJung-uk Kim acpi_sleep_disable(struct acpi_softc *sc)
2723d42f0ad8SJung-uk Kim {
2724d42f0ad8SJung-uk Kim     ACPI_STATUS		status;
2725d42f0ad8SJung-uk Kim 
2726a0e73a12SJung-uk Kim     /* Fail if the system is not fully up and running. */
2727a0e73a12SJung-uk Kim     if (!AcpiGbl_SystemAwakeAndRunning)
2728a0e73a12SJung-uk Kim 	return (AE_ERROR);
2729a0e73a12SJung-uk Kim 
2730d42f0ad8SJung-uk Kim     ACPI_LOCK(acpi);
2731d42f0ad8SJung-uk Kim     status = sc->acpi_sleep_disabled ? AE_ERROR : AE_OK;
2732a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = TRUE;
2733d42f0ad8SJung-uk Kim     ACPI_UNLOCK(acpi);
2734d42f0ad8SJung-uk Kim 
2735d42f0ad8SJung-uk Kim     return (status);
2736ece50487SMitsuru IWASAKI }
2737c30382dfSMitsuru IWASAKI 
273815e2f34fSNate Lawson enum acpi_sleep_state {
273915e2f34fSNate Lawson     ACPI_SS_NONE,
274015e2f34fSNate Lawson     ACPI_SS_GPE_SET,
274115e2f34fSNate Lawson     ACPI_SS_DEV_SUSPEND,
274215e2f34fSNate Lawson     ACPI_SS_SLP_PREP,
274315e2f34fSNate Lawson     ACPI_SS_SLEPT,
274415e2f34fSNate Lawson };
274515e2f34fSNate Lawson 
274615e32d5dSMike Smith /*
274700a30448SNate Lawson  * Enter the desired system sleep state.
274815e32d5dSMike Smith  *
2749be2b1797SNate Lawson  * Currently we support S1-S5 but S4 is only S4BIOS
275015e32d5dSMike Smith  */
275100a30448SNate Lawson static ACPI_STATUS
275200a30448SNate Lawson acpi_EnterSleepState(struct acpi_softc *sc, int state)
275315e32d5dSMike Smith {
275471804adcSJung-uk Kim     register_t intr;
275515e2f34fSNate Lawson     ACPI_STATUS status;
2756b913a7d5SAndriy Gapon     ACPI_EVENT_STATUS power_button_status;
275715e2f34fSNate Lawson     enum acpi_sleep_state slp_state;
2758f0a101b7SMitsuru IWASAKI     int sleep_result;
275915e32d5dSMike Smith 
2760b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
27610ae55423SMike Smith 
2762a0e73a12SJung-uk Kim     if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
276333c70d41SAndriy Gapon 	return_ACPI_STATUS (AE_BAD_PARAMETER);
2764a0e73a12SJung-uk Kim     if (!acpi_sleep_states[state]) {
2765a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev, "Sleep state S%d not supported by BIOS\n",
2766a0e73a12SJung-uk Kim 	    state);
2767a0e73a12SJung-uk Kim 	return (AE_SUPPORT);
2768a0e73a12SJung-uk Kim     }
2769a0e73a12SJung-uk Kim 
2770a0e73a12SJung-uk Kim     /* Re-entry once we're suspending is not allowed. */
2771a0e73a12SJung-uk Kim     status = acpi_sleep_disable(sc);
2772a0e73a12SJung-uk Kim     if (ACPI_FAILURE(status)) {
2773a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev,
2774a0e73a12SJung-uk Kim 	    "suspend request ignored (not ready yet)\n");
2775a0e73a12SJung-uk Kim 	return (status);
2776a0e73a12SJung-uk Kim     }
277733c70d41SAndriy Gapon 
277833c70d41SAndriy Gapon     if (state == ACPI_STATE_S5) {
277933c70d41SAndriy Gapon 	/*
278033c70d41SAndriy Gapon 	 * Shut down cleanly and power off.  This will call us back through the
278133c70d41SAndriy Gapon 	 * shutdown handlers.
278233c70d41SAndriy Gapon 	 */
278333c70d41SAndriy Gapon 	shutdown_nice(RB_POWEROFF);
278433c70d41SAndriy Gapon 	return_ACPI_STATUS (AE_OK);
278533c70d41SAndriy Gapon     }
278633c70d41SAndriy Gapon 
278785f95fffSAndriy Gapon     EVENTHANDLER_INVOKE(power_suspend_early);
278885f95fffSAndriy Gapon     stop_all_proc();
27894a8fa6feSJung-uk Kim     EVENTHANDLER_INVOKE(power_suspend);
27904a8fa6feSJung-uk Kim 
279136a483bbSJung-uk Kim     if (smp_started) {
2792c66d2b38SJung-uk Kim 	thread_lock(curthread);
2793c66d2b38SJung-uk Kim 	sched_bind(curthread, 0);
2794c66d2b38SJung-uk Kim 	thread_unlock(curthread);
279536a483bbSJung-uk Kim     }
2796c66d2b38SJung-uk Kim 
2797a56fe095SJohn Baldwin     /*
2798a56fe095SJohn Baldwin      * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2799a56fe095SJohn Baldwin      * drivers need this.
2800a56fe095SJohn Baldwin      */
2801a56fe095SJohn Baldwin     mtx_lock(&Giant);
2802c66d2b38SJung-uk Kim 
280315e2f34fSNate Lawson     slp_state = ACPI_SS_NONE;
280456d8cb57SMitsuru IWASAKI 
2805a1fccb47SMitsuru IWASAKI     sc->acpi_sstate = state;
2806a1fccb47SMitsuru IWASAKI 
2807d4b9ff91SNate Lawson     /* Enable any GPEs as appropriate and requested by the user. */
2808d4b9ff91SNate Lawson     acpi_wake_prep_walk(state);
280915e2f34fSNate Lawson     slp_state = ACPI_SS_GPE_SET;
2810e8b4d56eSNate Lawson 
281115e32d5dSMike Smith     /*
2812c7f88fc3SNate Lawson      * Inform all devices that we are going to sleep.  If at least one
2813c7f88fc3SNate Lawson      * device fails, DEVICE_SUSPEND() automatically resumes the tree.
281415e32d5dSMike Smith      *
2815c7f88fc3SNate Lawson      * XXX Note that a better two-pass approach with a 'veto' pass
2816c7f88fc3SNate Lawson      * followed by a "real thing" pass would be better, but the current
2817c7f88fc3SNate Lawson      * bus interface does not provide for this.
281815e32d5dSMike Smith      */
281915e2f34fSNate Lawson     if (DEVICE_SUSPEND(root_bus) != 0) {
282015e2f34fSNate Lawson 	device_printf(sc->acpi_dev, "device_suspend failed\n");
282133c70d41SAndriy Gapon 	goto backout;
282215e2f34fSNate Lawson     }
282315e2f34fSNate Lawson     slp_state = ACPI_SS_DEV_SUSPEND;
2824b9c780d6SMitsuru IWASAKI 
282593bfd059SNate Lawson     /* If testing device suspend only, back out of everything here. */
282693bfd059SNate Lawson     if (acpi_susp_bounce)
282733c70d41SAndriy Gapon 	goto backout;
282893bfd059SNate Lawson 
2829be2b1797SNate Lawson     status = AcpiEnterSleepStatePrep(state);
2830be2b1797SNate Lawson     if (ACPI_FAILURE(status)) {
2831b9c780d6SMitsuru IWASAKI 	device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2832b9c780d6SMitsuru IWASAKI 		      AcpiFormatException(status));
283333c70d41SAndriy Gapon 	goto backout;
2834b9c780d6SMitsuru IWASAKI     }
283515e2f34fSNate Lawson     slp_state = ACPI_SS_SLP_PREP;
2836b9c780d6SMitsuru IWASAKI 
2837be2b1797SNate Lawson     if (sc->acpi_sleep_delay > 0)
2838ff01efb5SMitsuru IWASAKI 	DELAY(sc->acpi_sleep_delay * 1000000);
2839ff01efb5SMitsuru IWASAKI 
2840f0a101b7SMitsuru IWASAKI     intr = intr_disable();
28414d46ef51SJung-uk Kim     if (state != ACPI_STATE_S1) {
2842f0a101b7SMitsuru IWASAKI 	sleep_result = acpi_sleep_machdep(sc, state);
2843f0a101b7SMitsuru IWASAKI 	acpi_wakeup_machdep(sc, state, sleep_result, 0);
2844b1a5c017SAndriy Gapon 
2845b1a5c017SAndriy Gapon 	/*
2846b1a5c017SAndriy Gapon 	 * XXX According to ACPI specification SCI_EN bit should be restored
2847b1a5c017SAndriy Gapon 	 * by ACPI platform (BIOS, firmware) to its pre-sleep state.
2848b1a5c017SAndriy Gapon 	 * Unfortunately some BIOSes fail to do that and that leads to
2849b1a5c017SAndriy Gapon 	 * unexpected and serious consequences during wake up like a system
2850b1a5c017SAndriy Gapon 	 * getting stuck in SMI handlers.
2851b1a5c017SAndriy Gapon 	 * This hack is picked up from Linux, which claims that it follows
2852b1a5c017SAndriy Gapon 	 * Windows behavior.
2853b1a5c017SAndriy Gapon 	 */
2854b1a5c017SAndriy Gapon 	if (sleep_result == 1 && state != ACPI_STATE_S4)
2855b1a5c017SAndriy Gapon 	    AcpiWriteBitRegister(ACPI_BITREG_SCI_ENABLE, ACPI_ENABLE_EVENT);
2856b1a5c017SAndriy Gapon 
28571df130f1SJung-uk Kim 	AcpiLeaveSleepStatePrep(state);
2858b913a7d5SAndriy Gapon 
2859b913a7d5SAndriy Gapon 	if (sleep_result == 1 && state == ACPI_STATE_S3) {
2860b913a7d5SAndriy Gapon 	    /*
2861b913a7d5SAndriy Gapon 	     * Prevent mis-interpretation of the wakeup by power button
2862b913a7d5SAndriy Gapon 	     * as a request for power off.
2863b913a7d5SAndriy Gapon 	     * Ideally we should post an appropriate wakeup event,
2864b913a7d5SAndriy Gapon 	     * perhaps using acpi_event_power_button_wake or alike.
2865b913a7d5SAndriy Gapon 	     *
2866b913a7d5SAndriy Gapon 	     * Clearing of power button status after wakeup is mandated
2867b913a7d5SAndriy Gapon 	     * by ACPI specification in section "Fixed Power Button".
2868b913a7d5SAndriy Gapon 	     *
2869b913a7d5SAndriy Gapon 	     * XXX As of ACPICA 20121114 AcpiGetEventStatus provides
2870b913a7d5SAndriy Gapon 	     * status as 0/1 corressponding to inactive/active despite
2871b913a7d5SAndriy Gapon 	     * its type being ACPI_EVENT_STATUS.  In other words,
2872b913a7d5SAndriy Gapon 	     * we should not test for ACPI_EVENT_FLAG_SET for time being.
2873b913a7d5SAndriy Gapon 	     */
2874b913a7d5SAndriy Gapon 	    if (ACPI_SUCCESS(AcpiGetEventStatus(ACPI_EVENT_POWER_BUTTON,
2875b913a7d5SAndriy Gapon 		&power_button_status)) && power_button_status != 0) {
2876b913a7d5SAndriy Gapon 		AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
2877b913a7d5SAndriy Gapon 		device_printf(sc->acpi_dev,
2878b913a7d5SAndriy Gapon 		    "cleared fixed power button status\n");
2879b913a7d5SAndriy Gapon 	    }
2880b913a7d5SAndriy Gapon 	}
2881b913a7d5SAndriy Gapon 
2882f0a101b7SMitsuru IWASAKI 	intr_restore(intr);
2883f0a101b7SMitsuru IWASAKI 
2884f0a101b7SMitsuru IWASAKI 	/* call acpi_wakeup_machdep() again with interrupt enabled */
2885f0a101b7SMitsuru IWASAKI 	acpi_wakeup_machdep(sc, state, sleep_result, 1);
2886f0a101b7SMitsuru IWASAKI 
2887f0a101b7SMitsuru IWASAKI 	if (sleep_result == -1)
2888a159c266SJung-uk Kim 		goto backout;
28896161544cSTakanori Watanabe 
28906161544cSTakanori Watanabe 	/* Re-enable ACPI hardware on wakeup from sleep state 4. */
2891be2b1797SNate Lawson 	if (state == ACPI_STATE_S4)
2892964679ceSMitsuru IWASAKI 	    AcpiEnable();
28936161544cSTakanori Watanabe     } else {
28941df130f1SJung-uk Kim 	status = AcpiEnterSleepState(state);
28951df130f1SJung-uk Kim 	AcpiLeaveSleepStatePrep(state);
289671804adcSJung-uk Kim 	intr_restore(intr);
2897be2b1797SNate Lawson 	if (ACPI_FAILURE(status)) {
2898be2b1797SNate Lawson 	    device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2899be2b1797SNate Lawson 			  AcpiFormatException(status));
290033c70d41SAndriy Gapon 	    goto backout;
290115e32d5dSMike Smith 	}
29026161544cSTakanori Watanabe     }
290315e2f34fSNate Lawson     slp_state = ACPI_SS_SLEPT;
2904ece50487SMitsuru IWASAKI 
290515e2f34fSNate Lawson     /*
290615e2f34fSNate Lawson      * Back out state according to how far along we got in the suspend
290715e2f34fSNate Lawson      * process.  This handles both the error and success cases.
290815e2f34fSNate Lawson      */
290933c70d41SAndriy Gapon backout:
291015e2f34fSNate Lawson     if (slp_state >= ACPI_SS_GPE_SET) {
291115e2f34fSNate Lawson 	acpi_wake_prep_walk(state);
291215e2f34fSNate Lawson 	sc->acpi_sstate = ACPI_STATE_S0;
291315e2f34fSNate Lawson     }
2914e3b56b66SMitsuru IWASAKI     if (slp_state >= ACPI_SS_DEV_SUSPEND)
2915e3b56b66SMitsuru IWASAKI 	DEVICE_RESUME(root_bus);
2916f0a101b7SMitsuru IWASAKI     if (slp_state >= ACPI_SS_SLP_PREP)
291715e2f34fSNate Lawson 	AcpiLeaveSleepState(state);
2918a0a15716SJung-uk Kim     if (slp_state >= ACPI_SS_SLEPT) {
2919a0a15716SJung-uk Kim 	acpi_resync_clock(sc);
292015e2f34fSNate Lawson 	acpi_enable_fixed_events(sc);
2921a0a15716SJung-uk Kim     }
2922337744d9SJung-uk Kim     sc->acpi_next_sstate = 0;
292315e2f34fSNate Lawson 
2924a56fe095SJohn Baldwin     mtx_unlock(&Giant);
2925c66d2b38SJung-uk Kim 
292636a483bbSJung-uk Kim     if (smp_started) {
2927c66d2b38SJung-uk Kim 	thread_lock(curthread);
2928c66d2b38SJung-uk Kim 	sched_unbind(curthread);
2929c66d2b38SJung-uk Kim 	thread_unlock(curthread);
293036a483bbSJung-uk Kim     }
2931c66d2b38SJung-uk Kim 
293285f95fffSAndriy Gapon     resume_all_proc();
293385f95fffSAndriy Gapon 
29344a8fa6feSJung-uk Kim     EVENTHANDLER_INVOKE(power_resume);
29354a8fa6feSJung-uk Kim 
2936d42f0ad8SJung-uk Kim     /* Allow another sleep request after a while. */
2937fadf3fb9SJohn Baldwin     callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME);
2938d42f0ad8SJung-uk Kim 
2939d42f0ad8SJung-uk Kim     /* Run /etc/rc.resume after we are back. */
2940d42f0ad8SJung-uk Kim     if (devctl_process_running())
2941d42f0ad8SJung-uk Kim 	acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2942d42f0ad8SJung-uk Kim 
29430ae55423SMike Smith     return_ACPI_STATUS (status);
294415e32d5dSMike Smith }
294515e32d5dSMike Smith 
2946a0a15716SJung-uk Kim static void
29470755473bSJung-uk Kim acpi_resync_clock(struct acpi_softc *sc)
29480755473bSJung-uk Kim {
2949ebbed20dSAndriy Gapon #ifdef __amd64__
29500755473bSJung-uk Kim     if (!acpi_reset_clock)
29510755473bSJung-uk Kim 	return;
29520755473bSJung-uk Kim 
29530755473bSJung-uk Kim     /*
29540755473bSJung-uk Kim      * Warm up timecounter again and reset system clock.
29550755473bSJung-uk Kim      */
29560755473bSJung-uk Kim     (void)timecounter->tc_get_timecount(timecounter);
29570755473bSJung-uk Kim     (void)timecounter->tc_get_timecount(timecounter);
29580755473bSJung-uk Kim     inittodr(time_second + sc->acpi_sleep_delay);
2959a0a15716SJung-uk Kim #endif
29600755473bSJung-uk Kim }
29610755473bSJung-uk Kim 
2962e8b4d56eSNate Lawson /* Enable or disable the device's wake GPE. */
2963e8b4d56eSNate Lawson int
2964e8b4d56eSNate Lawson acpi_wake_set_enable(device_t dev, int enable)
2965e8b4d56eSNate Lawson {
2966e8b4d56eSNate Lawson     struct acpi_prw_data prw;
2967e8b4d56eSNate Lawson     ACPI_STATUS status;
2968e8b4d56eSNate Lawson     int flags;
2969e8b4d56eSNate Lawson 
2970d4b9ff91SNate Lawson     /* Make sure the device supports waking the system and get the GPE. */
29712be4e471SJung-uk Kim     if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2972e8b4d56eSNate Lawson 	return (ENXIO);
2973e8b4d56eSNate Lawson 
2974d4b9ff91SNate Lawson     flags = acpi_get_flags(dev);
2975e8b4d56eSNate Lawson     if (enable) {
29765a77b11bSJung-uk Kim 	status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
29775a77b11bSJung-uk Kim 	    ACPI_GPE_ENABLE);
2978e8b4d56eSNate Lawson 	if (ACPI_FAILURE(status)) {
2979e8b4d56eSNate Lawson 	    device_printf(dev, "enable wake failed\n");
2980e8b4d56eSNate Lawson 	    return (ENXIO);
2981e8b4d56eSNate Lawson 	}
2982d4b9ff91SNate Lawson 	acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
2983e8b4d56eSNate Lawson     } else {
29845a77b11bSJung-uk Kim 	status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
29855a77b11bSJung-uk Kim 	    ACPI_GPE_DISABLE);
2986e8b4d56eSNate Lawson 	if (ACPI_FAILURE(status)) {
2987e8b4d56eSNate Lawson 	    device_printf(dev, "disable wake failed\n");
2988e8b4d56eSNate Lawson 	    return (ENXIO);
2989e8b4d56eSNate Lawson 	}
2990d4b9ff91SNate Lawson 	acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
2991e8b4d56eSNate Lawson     }
2992e8b4d56eSNate Lawson 
2993e8b4d56eSNate Lawson     return (0);
2994e8b4d56eSNate Lawson }
2995e8b4d56eSNate Lawson 
2996d4b9ff91SNate Lawson static int
2997d4b9ff91SNate Lawson acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
2998e8b4d56eSNate Lawson {
2999e8b4d56eSNate Lawson     struct acpi_prw_data prw;
3000d4b9ff91SNate Lawson     device_t dev;
3001e8b4d56eSNate Lawson 
3002d4b9ff91SNate Lawson     /* Check that this is a wake-capable device and get its GPE. */
3003e8b4d56eSNate Lawson     if (acpi_parse_prw(handle, &prw) != 0)
3004e8b4d56eSNate Lawson 	return (ENXIO);
3005d4b9ff91SNate Lawson     dev = acpi_get_device(handle);
3006e8b4d56eSNate Lawson 
3007e8b4d56eSNate Lawson     /*
3008d4b9ff91SNate Lawson      * The destination sleep state must be less than (i.e., higher power)
3009d4b9ff91SNate Lawson      * or equal to the value specified by _PRW.  If this GPE cannot be
3010d4b9ff91SNate Lawson      * enabled for the next sleep state, then disable it.  If it can and
3011d4b9ff91SNate Lawson      * the user requested it be enabled, turn on any required power resources
3012d4b9ff91SNate Lawson      * and set _PSW.
3013e8b4d56eSNate Lawson      */
3014d4b9ff91SNate Lawson     if (sstate > prw.lowest_wake) {
30155a77b11bSJung-uk Kim 	AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
3016e8b4d56eSNate Lawson 	if (bootverbose)
3017d4b9ff91SNate Lawson 	    device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
3018d4b9ff91SNate Lawson 		acpi_name(handle), sstate);
3019d4b9ff91SNate Lawson     } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
3020d4b9ff91SNate Lawson 	acpi_pwr_wake_enable(handle, 1);
3021d4b9ff91SNate Lawson 	acpi_SetInteger(handle, "_PSW", 1);
3022d4b9ff91SNate Lawson 	if (bootverbose)
3023d4b9ff91SNate Lawson 	    device_printf(dev, "wake_prep enabled for %s (S%d)\n",
3024d4b9ff91SNate Lawson 		acpi_name(handle), sstate);
3025d4b9ff91SNate Lawson     }
3026cc85c78cSNate Lawson 
3027cc85c78cSNate Lawson     return (0);
3028e8b4d56eSNate Lawson }
3029e8b4d56eSNate Lawson 
3030d4b9ff91SNate Lawson static int
3031d4b9ff91SNate Lawson acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
3032cc85c78cSNate Lawson {
3033cc85c78cSNate Lawson     struct acpi_prw_data prw;
3034d4b9ff91SNate Lawson     device_t dev;
3035cc85c78cSNate Lawson 
3036cc85c78cSNate Lawson     /*
3037d4b9ff91SNate Lawson      * Check that this is a wake-capable device and get its GPE.  Return
3038d4b9ff91SNate Lawson      * now if the user didn't enable this device for wake.
3039cc85c78cSNate Lawson      */
3040d4b9ff91SNate Lawson     if (acpi_parse_prw(handle, &prw) != 0)
3041d4b9ff91SNate Lawson 	return (ENXIO);
3042d4b9ff91SNate Lawson     dev = acpi_get_device(handle);
3043d4b9ff91SNate Lawson     if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
3044d4b9ff91SNate Lawson 	return (0);
3045cc85c78cSNate Lawson 
3046d4b9ff91SNate Lawson     /*
3047d4b9ff91SNate Lawson      * If this GPE couldn't be enabled for the previous sleep state, it was
3048d4b9ff91SNate Lawson      * disabled before going to sleep so re-enable it.  If it was enabled,
3049d4b9ff91SNate Lawson      * clear _PSW and turn off any power resources it used.
3050d4b9ff91SNate Lawson      */
3051d4b9ff91SNate Lawson     if (sstate > prw.lowest_wake) {
30525a77b11bSJung-uk Kim 	AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
3053d4b9ff91SNate Lawson 	if (bootverbose)
3054d4b9ff91SNate Lawson 	    device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
3055d4b9ff91SNate Lawson     } else {
3056d4b9ff91SNate Lawson 	acpi_SetInteger(handle, "_PSW", 0);
3057d4b9ff91SNate Lawson 	acpi_pwr_wake_enable(handle, 0);
3058d4b9ff91SNate Lawson 	if (bootverbose)
3059d4b9ff91SNate Lawson 	    device_printf(dev, "run_prep cleaned up for %s\n",
3060d4b9ff91SNate Lawson 		acpi_name(handle));
3061d4b9ff91SNate Lawson     }
3062d4b9ff91SNate Lawson 
3063e8b4d56eSNate Lawson     return (0);
3064e8b4d56eSNate Lawson }
3065e8b4d56eSNate Lawson 
3066e8b4d56eSNate Lawson static ACPI_STATUS
3067d4b9ff91SNate Lawson acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
3068e8b4d56eSNate Lawson {
3069d4b9ff91SNate Lawson     int sstate;
3070e8b4d56eSNate Lawson 
3071d4b9ff91SNate Lawson     /* If suspending, run the sleep prep function, otherwise wake. */
3072d4b9ff91SNate Lawson     sstate = *(int *)context;
3073d4b9ff91SNate Lawson     if (AcpiGbl_SystemAwakeAndRunning)
3074d4b9ff91SNate Lawson 	acpi_wake_sleep_prep(handle, sstate);
3075d4b9ff91SNate Lawson     else
3076d4b9ff91SNate Lawson 	acpi_wake_run_prep(handle, sstate);
3077e8b4d56eSNate Lawson     return (AE_OK);
3078e8b4d56eSNate Lawson }
3079e8b4d56eSNate Lawson 
3080d4b9ff91SNate Lawson /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
3081e8b4d56eSNate Lawson static int
3082d4b9ff91SNate Lawson acpi_wake_prep_walk(int sstate)
3083e8b4d56eSNate Lawson {
3084e8b4d56eSNate Lawson     ACPI_HANDLE sb_handle;
3085e8b4d56eSNate Lawson 
3086e8b4d56eSNate Lawson     if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
3087d4b9ff91SNate Lawson 	AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
30882272d050SJung-uk Kim 	    acpi_wake_prep, NULL, &sstate, NULL);
3089e8b4d56eSNate Lawson     return (0);
3090e8b4d56eSNate Lawson }
3091e8b4d56eSNate Lawson 
309288a79fc0SNate Lawson /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
309388a79fc0SNate Lawson static int
309488a79fc0SNate Lawson acpi_wake_sysctl_walk(device_t dev)
309588a79fc0SNate Lawson {
309688a79fc0SNate Lawson     int error, i, numdevs;
309788a79fc0SNate Lawson     device_t *devlist;
309888a79fc0SNate Lawson     device_t child;
3099d4b9ff91SNate Lawson     ACPI_STATUS status;
310088a79fc0SNate Lawson 
310188a79fc0SNate Lawson     error = device_get_children(dev, &devlist, &numdevs);
31021c9ec538SNate Lawson     if (error != 0 || numdevs == 0) {
31031c9ec538SNate Lawson 	if (numdevs == 0)
31041c9ec538SNate Lawson 	    free(devlist, M_TEMP);
310588a79fc0SNate Lawson 	return (error);
31061c9ec538SNate Lawson     }
310788a79fc0SNate Lawson     for (i = 0; i < numdevs; i++) {
310888a79fc0SNate Lawson 	child = devlist[i];
3109d4b9ff91SNate Lawson 	acpi_wake_sysctl_walk(child);
311088a79fc0SNate Lawson 	if (!device_is_attached(child))
311188a79fc0SNate Lawson 	    continue;
3112d4b9ff91SNate Lawson 	status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
3113d4b9ff91SNate Lawson 	if (ACPI_SUCCESS(status)) {
311488a79fc0SNate Lawson 	    SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
311588a79fc0SNate Lawson 		SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
311688a79fc0SNate Lawson 		"wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
311788a79fc0SNate Lawson 		acpi_wake_set_sysctl, "I", "Device set to wake the system");
311888a79fc0SNate Lawson 	}
311988a79fc0SNate Lawson     }
312088a79fc0SNate Lawson     free(devlist, M_TEMP);
312188a79fc0SNate Lawson 
312288a79fc0SNate Lawson     return (0);
312388a79fc0SNate Lawson }
312488a79fc0SNate Lawson 
312588a79fc0SNate Lawson /* Enable or disable wake from userland. */
312688a79fc0SNate Lawson static int
312788a79fc0SNate Lawson acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
312888a79fc0SNate Lawson {
312988a79fc0SNate Lawson     int enable, error;
313088a79fc0SNate Lawson     device_t dev;
313188a79fc0SNate Lawson 
313288a79fc0SNate Lawson     dev = (device_t)arg1;
3133d4b9ff91SNate Lawson     enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
313488a79fc0SNate Lawson 
313588a79fc0SNate Lawson     error = sysctl_handle_int(oidp, &enable, 0, req);
313688a79fc0SNate Lawson     if (error != 0 || req->newptr == NULL)
313788a79fc0SNate Lawson 	return (error);
313888a79fc0SNate Lawson     if (enable != 0 && enable != 1)
313988a79fc0SNate Lawson 	return (EINVAL);
314088a79fc0SNate Lawson 
314188a79fc0SNate Lawson     return (acpi_wake_set_enable(dev, enable));
314288a79fc0SNate Lawson }
314388a79fc0SNate Lawson 
3144e8b4d56eSNate Lawson /* Parse a device's _PRW into a structure. */
3145d4b9ff91SNate Lawson int
3146e8b4d56eSNate Lawson acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
3147e8b4d56eSNate Lawson {
3148e8b4d56eSNate Lawson     ACPI_STATUS			status;
3149e8b4d56eSNate Lawson     ACPI_BUFFER			prw_buffer;
3150e8b4d56eSNate Lawson     ACPI_OBJECT			*res, *res2;
3151d4b9ff91SNate Lawson     int				error, i, power_count;
3152e8b4d56eSNate Lawson 
3153e8b4d56eSNate Lawson     if (h == NULL || prw == NULL)
3154e8b4d56eSNate Lawson 	return (EINVAL);
3155e8b4d56eSNate Lawson 
3156e8b4d56eSNate Lawson     /*
3157e8b4d56eSNate Lawson      * The _PRW object (7.2.9) is only required for devices that have the
3158e8b4d56eSNate Lawson      * ability to wake the system from a sleeping state.
3159e8b4d56eSNate Lawson      */
3160e8b4d56eSNate Lawson     error = EINVAL;
3161e8b4d56eSNate Lawson     prw_buffer.Pointer = NULL;
3162e8b4d56eSNate Lawson     prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
3163e8b4d56eSNate Lawson     status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
3164e8b4d56eSNate Lawson     if (ACPI_FAILURE(status))
3165e8b4d56eSNate Lawson 	return (ENOENT);
3166e8b4d56eSNate Lawson     res = (ACPI_OBJECT *)prw_buffer.Pointer;
3167e8b4d56eSNate Lawson     if (res == NULL)
3168e8b4d56eSNate Lawson 	return (ENOENT);
3169e8b4d56eSNate Lawson     if (!ACPI_PKG_VALID(res, 2))
3170e8b4d56eSNate Lawson 	goto out;
3171e8b4d56eSNate Lawson 
3172e8b4d56eSNate Lawson     /*
3173e8b4d56eSNate Lawson      * Element 1 of the _PRW object:
3174e8b4d56eSNate Lawson      * The lowest power system sleeping state that can be entered while still
3175e8b4d56eSNate Lawson      * providing wake functionality.  The sleeping state being entered must
3176e8b4d56eSNate Lawson      * be less than (i.e., higher power) or equal to this value.
3177e8b4d56eSNate Lawson      */
3178e8b4d56eSNate Lawson     if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
3179e8b4d56eSNate Lawson 	goto out;
3180e8b4d56eSNate Lawson 
3181e8b4d56eSNate Lawson     /*
3182e8b4d56eSNate Lawson      * Element 0 of the _PRW object:
3183e8b4d56eSNate Lawson      */
3184e8b4d56eSNate Lawson     switch (res->Package.Elements[0].Type) {
3185e8b4d56eSNate Lawson     case ACPI_TYPE_INTEGER:
3186e8b4d56eSNate Lawson 	/*
3187e8b4d56eSNate Lawson 	 * If the data type of this package element is numeric, then this
3188e8b4d56eSNate Lawson 	 * _PRW package element is the bit index in the GPEx_EN, in the
3189e8b4d56eSNate Lawson 	 * GPE blocks described in the FADT, of the enable bit that is
3190e8b4d56eSNate Lawson 	 * enabled for the wake event.
3191e8b4d56eSNate Lawson 	 */
3192e8b4d56eSNate Lawson 	prw->gpe_handle = NULL;
3193e8b4d56eSNate Lawson 	prw->gpe_bit = res->Package.Elements[0].Integer.Value;
3194e8b4d56eSNate Lawson 	error = 0;
3195e8b4d56eSNate Lawson 	break;
3196e8b4d56eSNate Lawson     case ACPI_TYPE_PACKAGE:
3197e8b4d56eSNate Lawson 	/*
3198e8b4d56eSNate Lawson 	 * If the data type of this package element is a package, then this
3199e8b4d56eSNate Lawson 	 * _PRW package element is itself a package containing two
3200e8b4d56eSNate Lawson 	 * elements.  The first is an object reference to the GPE Block
3201e8b4d56eSNate Lawson 	 * device that contains the GPE that will be triggered by the wake
3202e8b4d56eSNate Lawson 	 * event.  The second element is numeric and it contains the bit
3203e8b4d56eSNate Lawson 	 * index in the GPEx_EN, in the GPE Block referenced by the
3204e8b4d56eSNate Lawson 	 * first element in the package, of the enable bit that is enabled for
3205e8b4d56eSNate Lawson 	 * the wake event.
3206e8b4d56eSNate Lawson 	 *
3207e8b4d56eSNate Lawson 	 * For example, if this field is a package then it is of the form:
3208e8b4d56eSNate Lawson 	 * Package() {\_SB.PCI0.ISA.GPE, 2}
3209e8b4d56eSNate Lawson 	 */
3210e8b4d56eSNate Lawson 	res2 = &res->Package.Elements[0];
3211e8b4d56eSNate Lawson 	if (!ACPI_PKG_VALID(res2, 2))
3212e8b4d56eSNate Lawson 	    goto out;
3213e8b4d56eSNate Lawson 	prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
3214e8b4d56eSNate Lawson 	if (prw->gpe_handle == NULL)
3215e8b4d56eSNate Lawson 	    goto out;
3216e8b4d56eSNate Lawson 	if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
3217e8b4d56eSNate Lawson 	    goto out;
3218e8b4d56eSNate Lawson 	error = 0;
3219e8b4d56eSNate Lawson 	break;
3220e8b4d56eSNate Lawson     default:
3221e8b4d56eSNate Lawson 	goto out;
3222e8b4d56eSNate Lawson     }
3223e8b4d56eSNate Lawson 
3224d4b9ff91SNate Lawson     /* Elements 2 to N of the _PRW object are power resources. */
3225d4b9ff91SNate Lawson     power_count = res->Package.Count - 2;
3226d4b9ff91SNate Lawson     if (power_count > ACPI_PRW_MAX_POWERRES) {
3227d4b9ff91SNate Lawson 	printf("ACPI device %s has too many power resources\n", acpi_name(h));
3228d4b9ff91SNate Lawson 	power_count = 0;
3229d4b9ff91SNate Lawson     }
3230d4b9ff91SNate Lawson     prw->power_res_count = power_count;
3231d4b9ff91SNate Lawson     for (i = 0; i < power_count; i++)
3232d4b9ff91SNate Lawson 	prw->power_res[i] = res->Package.Elements[i];
3233e8b4d56eSNate Lawson 
3234e8b4d56eSNate Lawson out:
3235e8b4d56eSNate Lawson     if (prw_buffer.Pointer != NULL)
3236e8b4d56eSNate Lawson 	AcpiOsFree(prw_buffer.Pointer);
3237e8b4d56eSNate Lawson     return (error);
3238e8b4d56eSNate Lawson }
3239e8b4d56eSNate Lawson 
324015e32d5dSMike Smith /*
324115e32d5dSMike Smith  * ACPI Event Handlers
324215e32d5dSMike Smith  */
324315e32d5dSMike Smith 
324415e32d5dSMike Smith /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
324515e32d5dSMike Smith 
324615e32d5dSMike Smith static void
324715e32d5dSMike Smith acpi_system_eventhandler_sleep(void *arg, int state)
324815e32d5dSMike Smith {
32492d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
325000a30448SNate Lawson     int ret;
3251bee4aa4aSNate Lawson 
3252b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
325315e32d5dSMike Smith 
3254a0e73a12SJung-uk Kim     /* Check if button action is disabled or unknown. */
3255a0e73a12SJung-uk Kim     if (state == ACPI_STATE_UNKNOWN)
3256813d6dcaSNate Lawson 	return;
3257813d6dcaSNate Lawson 
325800a30448SNate Lawson     /* Request that the system prepare to enter the given suspend state. */
32592d0c82e8SJung-uk Kim     ret = acpi_ReqSleepState(sc, state);
326000a30448SNate Lawson     if (ret != 0)
32612d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
32622d0c82e8SJung-uk Kim 	    "request to enter state S%d failed (err %d)\n", state, ret);
3263bee4aa4aSNate Lawson 
32640ae55423SMike Smith     return_VOID;
326515e32d5dSMike Smith }
326615e32d5dSMike Smith 
326715e32d5dSMike Smith static void
326815e32d5dSMike Smith acpi_system_eventhandler_wakeup(void *arg, int state)
326915e32d5dSMike Smith {
3270bee4aa4aSNate Lawson 
3271b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
32720ae55423SMike Smith 
3273bee4aa4aSNate Lawson     /* Currently, nothing to do for wakeup. */
3274cb9b0d80SMike Smith 
32750ae55423SMike Smith     return_VOID;
327615e32d5dSMike Smith }
327715e32d5dSMike Smith 
327815e32d5dSMike Smith /*
327915e32d5dSMike Smith  * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
328015e32d5dSMike Smith  */
3281b5854f5fSJung-uk Kim static void
3282b5854f5fSJung-uk Kim acpi_invoke_sleep_eventhandler(void *context)
3283b5854f5fSJung-uk Kim {
3284b5854f5fSJung-uk Kim 
3285b5854f5fSJung-uk Kim     EVENTHANDLER_INVOKE(acpi_sleep_event, *(int *)context);
3286b5854f5fSJung-uk Kim }
3287b5854f5fSJung-uk Kim 
3288b5854f5fSJung-uk Kim static void
3289b5854f5fSJung-uk Kim acpi_invoke_wake_eventhandler(void *context)
3290b5854f5fSJung-uk Kim {
3291b5854f5fSJung-uk Kim 
3292b5854f5fSJung-uk Kim     EVENTHANDLER_INVOKE(acpi_wakeup_event, *(int *)context);
3293b5854f5fSJung-uk Kim }
3294b5854f5fSJung-uk Kim 
329515e32d5dSMike Smith UINT32
329633febf93SNate Lawson acpi_event_power_button_sleep(void *context)
329715e32d5dSMike Smith {
329815e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
329915e32d5dSMike Smith 
3300b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
33010ae55423SMike Smith 
3302b5854f5fSJung-uk Kim     if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3303b5854f5fSJung-uk Kim 	acpi_invoke_sleep_eventhandler, &sc->acpi_power_button_sx)))
3304b5854f5fSJung-uk Kim 	return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3305b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
330615e32d5dSMike Smith }
330715e32d5dSMike Smith 
330815e32d5dSMike Smith UINT32
330933febf93SNate Lawson acpi_event_power_button_wake(void *context)
331015e32d5dSMike Smith {
331115e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
331215e32d5dSMike Smith 
3313b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
33140ae55423SMike Smith 
3315b5854f5fSJung-uk Kim     if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3316b5854f5fSJung-uk Kim 	acpi_invoke_wake_eventhandler, &sc->acpi_power_button_sx)))
3317b5854f5fSJung-uk Kim 	return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3318b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
331915e32d5dSMike Smith }
332015e32d5dSMike Smith 
332115e32d5dSMike Smith UINT32
332233febf93SNate Lawson acpi_event_sleep_button_sleep(void *context)
332315e32d5dSMike Smith {
332415e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
332515e32d5dSMike Smith 
3326b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
33270ae55423SMike Smith 
3328b5854f5fSJung-uk Kim     if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3329b5854f5fSJung-uk Kim 	acpi_invoke_sleep_eventhandler, &sc->acpi_sleep_button_sx)))
3330b5854f5fSJung-uk Kim 	return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3331b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
333215e32d5dSMike Smith }
333315e32d5dSMike Smith 
333415e32d5dSMike Smith UINT32
333533febf93SNate Lawson acpi_event_sleep_button_wake(void *context)
333615e32d5dSMike Smith {
333715e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
333815e32d5dSMike Smith 
3339b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
33400ae55423SMike Smith 
3341b5854f5fSJung-uk Kim     if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3342b5854f5fSJung-uk Kim 	acpi_invoke_wake_eventhandler, &sc->acpi_sleep_button_sx)))
3343b5854f5fSJung-uk Kim 	return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3344b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
334515e32d5dSMike Smith }
334615e32d5dSMike Smith 
334715e32d5dSMike Smith /*
3348bee4aa4aSNate Lawson  * XXX This static buffer is suboptimal.  There is no locking so only
3349bee4aa4aSNate Lawson  * use this for single-threaded callers.
335015e32d5dSMike Smith  */
335115e32d5dSMike Smith char *
335215e32d5dSMike Smith acpi_name(ACPI_HANDLE handle)
335315e32d5dSMike Smith {
3354bee4aa4aSNate Lawson     ACPI_BUFFER buf;
3355bee4aa4aSNate Lawson     static char data[256];
335615e32d5dSMike Smith 
3357bee4aa4aSNate Lawson     buf.Length = sizeof(data);
3358bee4aa4aSNate Lawson     buf.Pointer = data;
3359cb9b0d80SMike Smith 
33600a9a1f44SNate Lawson     if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
3361bee4aa4aSNate Lawson 	return (data);
3362bee4aa4aSNate Lawson     return ("(unknown)");
336315e32d5dSMike Smith }
336415e32d5dSMike Smith 
336515e32d5dSMike Smith /*
336615e32d5dSMike Smith  * Debugging/bug-avoidance.  Avoid trying to fetch info on various
336715e32d5dSMike Smith  * parts of the namespace.
336815e32d5dSMike Smith  */
336915e32d5dSMike Smith int
337015e32d5dSMike Smith acpi_avoid(ACPI_HANDLE handle)
337115e32d5dSMike Smith {
33723c600cfbSJohn Baldwin     char	*cp, *env, *np;
337315e32d5dSMike Smith     int		len;
337415e32d5dSMike Smith 
337515e32d5dSMike Smith     np = acpi_name(handle);
337615e32d5dSMike Smith     if (*np == '\\')
337715e32d5dSMike Smith 	np++;
33782be111bfSDavide Italiano     if ((env = kern_getenv("debug.acpi.avoid")) == NULL)
337915e32d5dSMike Smith 	return (0);
338015e32d5dSMike Smith 
3381be2b1797SNate Lawson     /* Scan the avoid list checking for a match */
33823c600cfbSJohn Baldwin     cp = env;
338315e32d5dSMike Smith     for (;;) {
3384bee4aa4aSNate Lawson 	while (*cp != 0 && isspace(*cp))
338515e32d5dSMike Smith 	    cp++;
338615e32d5dSMike Smith 	if (*cp == 0)
338715e32d5dSMike Smith 	    break;
338815e32d5dSMike Smith 	len = 0;
3389bee4aa4aSNate Lawson 	while (cp[len] != 0 && !isspace(cp[len]))
339015e32d5dSMike Smith 	    len++;
3391d786139cSMaxime Henrion 	if (!strncmp(cp, np, len)) {
33923c600cfbSJohn Baldwin 	    freeenv(env);
33930ae55423SMike Smith 	    return(1);
3394d786139cSMaxime Henrion 	}
33950ae55423SMike Smith 	cp += len;
33960ae55423SMike Smith     }
33973c600cfbSJohn Baldwin     freeenv(env);
3398be2b1797SNate Lawson 
33990ae55423SMike Smith     return (0);
34000ae55423SMike Smith }
34010ae55423SMike Smith 
34020ae55423SMike Smith /*
34030ae55423SMike Smith  * Debugging/bug-avoidance.  Disable ACPI subsystem components.
34040ae55423SMike Smith  */
34050ae55423SMike Smith int
34060ae55423SMike Smith acpi_disabled(char *subsys)
34070ae55423SMike Smith {
340878689b15SMaxime Henrion     char	*cp, *env;
34090ae55423SMike Smith     int		len;
34100ae55423SMike Smith 
34112be111bfSDavide Italiano     if ((env = kern_getenv("debug.acpi.disabled")) == NULL)
34120ae55423SMike Smith 	return (0);
34133184cf5aSNate Lawson     if (strcmp(env, "all") == 0) {
341478689b15SMaxime Henrion 	freeenv(env);
34150ae55423SMike Smith 	return (1);
3416d786139cSMaxime Henrion     }
34170ae55423SMike Smith 
34183184cf5aSNate Lawson     /* Scan the disable list, checking for a match. */
341978689b15SMaxime Henrion     cp = env;
34200ae55423SMike Smith     for (;;) {
34213184cf5aSNate Lawson 	while (*cp != '\0' && isspace(*cp))
34220ae55423SMike Smith 	    cp++;
34233184cf5aSNate Lawson 	if (*cp == '\0')
34240ae55423SMike Smith 	    break;
34250ae55423SMike Smith 	len = 0;
34263184cf5aSNate Lawson 	while (cp[len] != '\0' && !isspace(cp[len]))
34270ae55423SMike Smith 	    len++;
34283184cf5aSNate Lawson 	if (strncmp(cp, subsys, len) == 0) {
342978689b15SMaxime Henrion 	    freeenv(env);
343015e32d5dSMike Smith 	    return (1);
3431d786139cSMaxime Henrion 	}
343215e32d5dSMike Smith 	cp += len;
343315e32d5dSMike Smith     }
343478689b15SMaxime Henrion     freeenv(env);
3435be2b1797SNate Lawson 
343615e32d5dSMike Smith     return (0);
343715e32d5dSMike Smith }
343815e32d5dSMike Smith 
343964de8019SJohn Baldwin static void
344064de8019SJohn Baldwin acpi_lookup(void *arg, const char *name, device_t *dev)
344164de8019SJohn Baldwin {
344264de8019SJohn Baldwin     ACPI_HANDLE handle;
344364de8019SJohn Baldwin 
344464de8019SJohn Baldwin     if (*dev != NULL)
344564de8019SJohn Baldwin 	return;
344664de8019SJohn Baldwin 
344764de8019SJohn Baldwin     /*
344864de8019SJohn Baldwin      * Allow any handle name that is specified as an absolute path and
344964de8019SJohn Baldwin      * starts with '\'.  We could restrict this to \_SB and friends,
345064de8019SJohn Baldwin      * but see acpi_probe_children() for notes on why we scan the entire
345164de8019SJohn Baldwin      * namespace for devices.
345264de8019SJohn Baldwin      *
345364de8019SJohn Baldwin      * XXX: The pathname argument to AcpiGetHandle() should be fixed to
345464de8019SJohn Baldwin      * be const.
345564de8019SJohn Baldwin      */
345664de8019SJohn Baldwin     if (name[0] != '\\')
345764de8019SJohn Baldwin 	return;
345864de8019SJohn Baldwin     if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, __DECONST(char *, name),
345964de8019SJohn Baldwin 	&handle)))
346064de8019SJohn Baldwin 	return;
346164de8019SJohn Baldwin     *dev = acpi_get_device(handle);
346264de8019SJohn Baldwin }
346364de8019SJohn Baldwin 
346415e32d5dSMike Smith /*
346515e32d5dSMike Smith  * Control interface.
346615e32d5dSMike Smith  *
34670ae55423SMike Smith  * We multiplex ioctls for all participating ACPI devices here.  Individual
3468be2b1797SNate Lawson  * drivers wanting to be accessible via /dev/acpi should use the
3469be2b1797SNate Lawson  * register/deregister interface to make their handlers visible.
347015e32d5dSMike Smith  */
34710ae55423SMike Smith struct acpi_ioctl_hook
34720ae55423SMike Smith {
34730ae55423SMike Smith     TAILQ_ENTRY(acpi_ioctl_hook) link;
34740ae55423SMike Smith     u_long			 cmd;
3475be2b1797SNate Lawson     acpi_ioctl_fn		 fn;
34760ae55423SMike Smith     void			 *arg;
34770ae55423SMike Smith };
34780ae55423SMike Smith 
34790ae55423SMike Smith static TAILQ_HEAD(,acpi_ioctl_hook)	acpi_ioctl_hooks;
34800ae55423SMike Smith static int				acpi_ioctl_hooks_initted;
34810ae55423SMike Smith 
34820ae55423SMike Smith int
3483be2b1797SNate Lawson acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
34840ae55423SMike Smith {
34850ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
34860ae55423SMike Smith 
34870ae55423SMike Smith     if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
34880ae55423SMike Smith 	return (ENOMEM);
34890ae55423SMike Smith     hp->cmd = cmd;
34900ae55423SMike Smith     hp->fn = fn;
34910ae55423SMike Smith     hp->arg = arg;
349215e2f34fSNate Lawson 
349315e2f34fSNate Lawson     ACPI_LOCK(acpi);
34940ae55423SMike Smith     if (acpi_ioctl_hooks_initted == 0) {
34950ae55423SMike Smith 	TAILQ_INIT(&acpi_ioctl_hooks);
34960ae55423SMike Smith 	acpi_ioctl_hooks_initted = 1;
34970ae55423SMike Smith     }
34980ae55423SMike Smith     TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
349915e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
350015e2f34fSNate Lawson 
35010ae55423SMike Smith     return (0);
35020ae55423SMike Smith }
35030ae55423SMike Smith 
35040ae55423SMike Smith void
3505be2b1797SNate Lawson acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
35060ae55423SMike Smith {
35070ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
35080ae55423SMike Smith 
350915e2f34fSNate Lawson     ACPI_LOCK(acpi);
35100ae55423SMike Smith     TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
351115e2f34fSNate Lawson 	if (hp->cmd == cmd && hp->fn == fn)
35120ae55423SMike Smith 	    break;
35130ae55423SMike Smith 
35140ae55423SMike Smith     if (hp != NULL) {
35150ae55423SMike Smith 	TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
35160ae55423SMike Smith 	free(hp, M_ACPIDEV);
35170ae55423SMike Smith     }
351815e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
35190ae55423SMike Smith }
35200ae55423SMike Smith 
352115e32d5dSMike Smith static int
352200b4e54aSWarner Losh acpiopen(struct cdev *dev, int flag, int fmt, struct thread *td)
352315e32d5dSMike Smith {
352415e32d5dSMike Smith     return (0);
352515e32d5dSMike Smith }
352615e32d5dSMike Smith 
352715e32d5dSMike Smith static int
352800b4e54aSWarner Losh acpiclose(struct cdev *dev, int flag, int fmt, struct thread *td)
352915e32d5dSMike Smith {
353015e32d5dSMike Smith     return (0);
353115e32d5dSMike Smith }
353215e32d5dSMike Smith 
353315e32d5dSMike Smith static int
353400b4e54aSWarner Losh acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
353515e32d5dSMike Smith {
353615e32d5dSMike Smith     struct acpi_softc		*sc;
35370ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
3538bee4aa4aSNate Lawson     int				error, state;
353915e32d5dSMike Smith 
3540a2e35898SDavid E. O'Brien     error = 0;
3541a2e35898SDavid E. O'Brien     hp = NULL;
354215e32d5dSMike Smith     sc = dev->si_drv1;
354315e32d5dSMike Smith 
35440ae55423SMike Smith     /*
35450ae55423SMike Smith      * Scan the list of registered ioctls, looking for handlers.
35460ae55423SMike Smith      */
354715e2f34fSNate Lawson     ACPI_LOCK(acpi);
3548bee4aa4aSNate Lawson     if (acpi_ioctl_hooks_initted)
35490ae55423SMike Smith 	TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3550bee4aa4aSNate Lawson 	    if (hp->cmd == cmd)
3551bee4aa4aSNate Lawson 		break;
35520ae55423SMike Smith 	}
355315e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
3554bee4aa4aSNate Lawson     if (hp)
3555bee4aa4aSNate Lawson 	return (hp->fn(cmd, addr, hp->arg));
35560ae55423SMike Smith 
35570ae55423SMike Smith     /*
3558a89fcf28STakanori Watanabe      * Core ioctls are not permitted for non-writable user.
3559a89fcf28STakanori Watanabe      * Currently, other ioctls just fetch information.
3560a89fcf28STakanori Watanabe      * Not changing system behavior.
3561a89fcf28STakanori Watanabe      */
3562be2b1797SNate Lawson     if ((flag & FWRITE) == 0)
3563be2b1797SNate Lawson 	return (EPERM);
3564a89fcf28STakanori Watanabe 
3565be2b1797SNate Lawson     /* Core system ioctls. */
356615e32d5dSMike Smith     switch (cmd) {
356700a30448SNate Lawson     case ACPIIO_REQSLPSTATE:
356800a30448SNate Lawson 	state = *(int *)addr;
356900a30448SNate Lawson 	if (state != ACPI_STATE_S5)
3570a0e73a12SJung-uk Kim 	    return (acpi_ReqSleepState(sc, state));
3571a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n");
3572a0e73a12SJung-uk Kim 	error = EOPNOTSUPP;
357300a30448SNate Lawson 	break;
357400a30448SNate Lawson     case ACPIIO_ACKSLPSTATE:
357500a30448SNate Lawson 	error = *(int *)addr;
357600a30448SNate Lawson 	error = acpi_AckSleepState(sc->acpi_clone, error);
357700a30448SNate Lawson 	break;
357800a30448SNate Lawson     case ACPIIO_SETSLPSTATE:	/* DEPRECATED */
357915e32d5dSMike Smith 	state = *(int *)addr;
3580a0e73a12SJung-uk Kim 	if (state < ACPI_STATE_S0 || state > ACPI_S_STATES_MAX)
3581a0e73a12SJung-uk Kim 	    return (EINVAL);
3582a0e73a12SJung-uk Kim 	if (!acpi_sleep_states[state])
3583a0e73a12SJung-uk Kim 	    return (EOPNOTSUPP);
3584a0e73a12SJung-uk Kim 	if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
3585a0e73a12SJung-uk Kim 	    error = ENXIO;
358615e32d5dSMike Smith 	break;
358715e32d5dSMike Smith     default:
3588bee4aa4aSNate Lawson 	error = ENXIO;
358915e32d5dSMike Smith 	break;
359015e32d5dSMike Smith     }
3591917d44c8SMitsuru IWASAKI 
359215e32d5dSMike Smith     return (error);
359315e32d5dSMike Smith }
359415e32d5dSMike Smith 
35951d073b1dSJohn Baldwin static int
3596a0e73a12SJung-uk Kim acpi_sname2sstate(const char *sname)
3597a0e73a12SJung-uk Kim {
3598a0e73a12SJung-uk Kim     int sstate;
3599a0e73a12SJung-uk Kim 
3600a0e73a12SJung-uk Kim     if (toupper(sname[0]) == 'S') {
3601a0e73a12SJung-uk Kim 	sstate = sname[1] - '0';
3602a0e73a12SJung-uk Kim 	if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5 &&
3603a0e73a12SJung-uk Kim 	    sname[2] == '\0')
3604a0e73a12SJung-uk Kim 	    return (sstate);
3605a0e73a12SJung-uk Kim     } else if (strcasecmp(sname, "NONE") == 0)
3606a0e73a12SJung-uk Kim 	return (ACPI_STATE_UNKNOWN);
3607a0e73a12SJung-uk Kim     return (-1);
3608a0e73a12SJung-uk Kim }
3609a0e73a12SJung-uk Kim 
3610a0e73a12SJung-uk Kim static const char *
3611a0e73a12SJung-uk Kim acpi_sstate2sname(int sstate)
3612a0e73a12SJung-uk Kim {
3613a0e73a12SJung-uk Kim     static const char *snames[] = { "S0", "S1", "S2", "S3", "S4", "S5" };
3614a0e73a12SJung-uk Kim 
3615a0e73a12SJung-uk Kim     if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5)
3616a0e73a12SJung-uk Kim 	return (snames[sstate]);
3617a0e73a12SJung-uk Kim     else if (sstate == ACPI_STATE_UNKNOWN)
3618a0e73a12SJung-uk Kim 	return ("NONE");
3619a0e73a12SJung-uk Kim     return (NULL);
3620a0e73a12SJung-uk Kim }
3621a0e73a12SJung-uk Kim 
3622a0e73a12SJung-uk Kim static int
3623d75de536SMitsuru IWASAKI acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3624d75de536SMitsuru IWASAKI {
3625d75de536SMitsuru IWASAKI     int error;
3626bee4aa4aSNate Lawson     struct sbuf sb;
3627a0e73a12SJung-uk Kim     UINT8 state;
3628d75de536SMitsuru IWASAKI 
3629bee4aa4aSNate Lawson     sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3630a0e73a12SJung-uk Kim     for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
3631a0e73a12SJung-uk Kim 	if (acpi_sleep_states[state])
3632a0e73a12SJung-uk Kim 	    sbuf_printf(&sb, "%s ", acpi_sstate2sname(state));
3633bee4aa4aSNate Lawson     sbuf_trim(&sb);
3634bee4aa4aSNate Lawson     sbuf_finish(&sb);
3635bee4aa4aSNate Lawson     error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3636bee4aa4aSNate Lawson     sbuf_delete(&sb);
3637d75de536SMitsuru IWASAKI     return (error);
3638d75de536SMitsuru IWASAKI }
3639d75de536SMitsuru IWASAKI 
3640d75de536SMitsuru IWASAKI static int
36411d073b1dSJohn Baldwin acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
36421d073b1dSJohn Baldwin {
36431d073b1dSJohn Baldwin     char sleep_state[10];
3644a0e73a12SJung-uk Kim     int error, new_state, old_state;
36451d073b1dSJohn Baldwin 
3646a0e73a12SJung-uk Kim     old_state = *(int *)oidp->oid_arg1;
3647a0e73a12SJung-uk Kim     strlcpy(sleep_state, acpi_sstate2sname(old_state), sizeof(sleep_state));
36481d073b1dSJohn Baldwin     error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
36491d073b1dSJohn Baldwin     if (error == 0 && req->newptr != NULL) {
3650a0e73a12SJung-uk Kim 	new_state = acpi_sname2sstate(sleep_state);
3651a0e73a12SJung-uk Kim 	if (new_state < ACPI_STATE_S1)
3652a0e73a12SJung-uk Kim 	    return (EINVAL);
365354b43614SJung-uk Kim 	if (new_state < ACPI_S_STATE_COUNT && !acpi_sleep_states[new_state])
3654a0e73a12SJung-uk Kim 	    return (EOPNOTSUPP);
3655be2b1797SNate Lawson 	if (new_state != old_state)
3656a0e73a12SJung-uk Kim 	    *(int *)oidp->oid_arg1 = new_state;
36571d073b1dSJohn Baldwin     }
36581d073b1dSJohn Baldwin     return (error);
36591d073b1dSJohn Baldwin }
36601d073b1dSJohn Baldwin 
36619b937d48SNate Lawson /* Inform devctl(4) when we receive a Notify. */
36629b937d48SNate Lawson void
36639b937d48SNate Lawson acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
36649b937d48SNate Lawson {
36659b937d48SNate Lawson     char		notify_buf[16];
36669b937d48SNate Lawson     ACPI_BUFFER		handle_buf;
36679b937d48SNate Lawson     ACPI_STATUS		status;
36689b937d48SNate Lawson 
36699b937d48SNate Lawson     if (subsystem == NULL)
36709b937d48SNate Lawson 	return;
36719b937d48SNate Lawson 
36729b937d48SNate Lawson     handle_buf.Pointer = NULL;
36739b937d48SNate Lawson     handle_buf.Length = ACPI_ALLOCATE_BUFFER;
36740594dadeSJung-uk Kim     status = AcpiNsHandleToPathname(h, &handle_buf, FALSE);
36759b937d48SNate Lawson     if (ACPI_FAILURE(status))
36769b937d48SNate Lawson 	return;
36779b937d48SNate Lawson     snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
36789b937d48SNate Lawson     devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
36799b937d48SNate Lawson     AcpiOsFree(handle_buf.Pointer);
36809b937d48SNate Lawson }
36819b937d48SNate Lawson 
368215e32d5dSMike Smith #ifdef ACPI_DEBUG
36830ae55423SMike Smith /*
36840ae55423SMike Smith  * Support for parsing debug options from the kernel environment.
36850ae55423SMike Smith  *
36860ae55423SMike Smith  * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
36870ae55423SMike Smith  * by specifying the names of the bits in the debug.acpi.layer and
36880ae55423SMike Smith  * debug.acpi.level environment variables.  Bits may be unset by
36890ae55423SMike Smith  * prefixing the bit name with !.
36900ae55423SMike Smith  */
369115e32d5dSMike Smith struct debugtag
369215e32d5dSMike Smith {
369315e32d5dSMike Smith     char	*name;
369415e32d5dSMike Smith     UINT32	value;
369515e32d5dSMike Smith };
369615e32d5dSMike Smith 
369715e32d5dSMike Smith static struct debugtag	dbg_layer[] = {
3698c5ba0be4SMike Smith     {"ACPI_UTILITIES",		ACPI_UTILITIES},
3699c5ba0be4SMike Smith     {"ACPI_HARDWARE",		ACPI_HARDWARE},
3700c5ba0be4SMike Smith     {"ACPI_EVENTS",		ACPI_EVENTS},
3701c5ba0be4SMike Smith     {"ACPI_TABLES",		ACPI_TABLES},
3702c5ba0be4SMike Smith     {"ACPI_NAMESPACE",		ACPI_NAMESPACE},
3703c5ba0be4SMike Smith     {"ACPI_PARSER",		ACPI_PARSER},
3704c5ba0be4SMike Smith     {"ACPI_DISPATCHER",		ACPI_DISPATCHER},
3705c5ba0be4SMike Smith     {"ACPI_EXECUTER",		ACPI_EXECUTER},
3706c5ba0be4SMike Smith     {"ACPI_RESOURCES",		ACPI_RESOURCES},
3707d62ab2f4SMitsuru IWASAKI     {"ACPI_CA_DEBUGGER",	ACPI_CA_DEBUGGER},
37084c1cdee6SMike Smith     {"ACPI_OS_SERVICES",	ACPI_OS_SERVICES},
3709d62ab2f4SMitsuru IWASAKI     {"ACPI_CA_DISASSEMBLER",	ACPI_CA_DISASSEMBLER},
3710297835bcSNate Lawson     {"ACPI_ALL_COMPONENTS",	ACPI_ALL_COMPONENTS},
37114c1cdee6SMike Smith 
3712c5ba0be4SMike Smith     {"ACPI_AC_ADAPTER",		ACPI_AC_ADAPTER},
3713c5ba0be4SMike Smith     {"ACPI_BATTERY",		ACPI_BATTERY},
37143184cf5aSNate Lawson     {"ACPI_BUS",		ACPI_BUS},
3715c5ba0be4SMike Smith     {"ACPI_BUTTON",		ACPI_BUTTON},
37163184cf5aSNate Lawson     {"ACPI_EC", 		ACPI_EC},
37173184cf5aSNate Lawson     {"ACPI_FAN",		ACPI_FAN},
37183184cf5aSNate Lawson     {"ACPI_POWERRES",		ACPI_POWERRES},
37194c1cdee6SMike Smith     {"ACPI_PROCESSOR",		ACPI_PROCESSOR},
3720cb9b0d80SMike Smith     {"ACPI_THERMAL",		ACPI_THERMAL},
37213184cf5aSNate Lawson     {"ACPI_TIMER",		ACPI_TIMER},
3722b53f2771SMike Smith     {"ACPI_ALL_DRIVERS",	ACPI_ALL_DRIVERS},
372315e32d5dSMike Smith     {NULL, 0}
372415e32d5dSMike Smith };
372515e32d5dSMike Smith 
372615e32d5dSMike Smith static struct debugtag dbg_level[] = {
37279501b603SJohn Baldwin     {"ACPI_LV_INIT",		ACPI_LV_INIT},
37284c1cdee6SMike Smith     {"ACPI_LV_DEBUG_OBJECT",	ACPI_LV_DEBUG_OBJECT},
37299501b603SJohn Baldwin     {"ACPI_LV_INFO",		ACPI_LV_INFO},
3730cc6455afSJung-uk Kim     {"ACPI_LV_REPAIR",		ACPI_LV_REPAIR},
37314c1cdee6SMike Smith     {"ACPI_LV_ALL_EXCEPTIONS",	ACPI_LV_ALL_EXCEPTIONS},
3732d62ab2f4SMitsuru IWASAKI 
3733d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 1 [Standard Trace Level] */
3734297835bcSNate Lawson     {"ACPI_LV_INIT_NAMES",	ACPI_LV_INIT_NAMES},
37354c1cdee6SMike Smith     {"ACPI_LV_PARSE",		ACPI_LV_PARSE},
37364c1cdee6SMike Smith     {"ACPI_LV_LOAD",		ACPI_LV_LOAD},
3737d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_DISPATCH",	ACPI_LV_DISPATCH},
37384c1cdee6SMike Smith     {"ACPI_LV_EXEC",		ACPI_LV_EXEC},
37394c1cdee6SMike Smith     {"ACPI_LV_NAMES",		ACPI_LV_NAMES},
37404c1cdee6SMike Smith     {"ACPI_LV_OPREGION",	ACPI_LV_OPREGION},
37414c1cdee6SMike Smith     {"ACPI_LV_BFIELD",		ACPI_LV_BFIELD},
37424c1cdee6SMike Smith     {"ACPI_LV_TABLES",		ACPI_LV_TABLES},
37434c1cdee6SMike Smith     {"ACPI_LV_VALUES",		ACPI_LV_VALUES},
37444c1cdee6SMike Smith     {"ACPI_LV_OBJECTS",		ACPI_LV_OBJECTS},
37454c1cdee6SMike Smith     {"ACPI_LV_RESOURCES",	ACPI_LV_RESOURCES},
37464c1cdee6SMike Smith     {"ACPI_LV_USER_REQUESTS",	ACPI_LV_USER_REQUESTS},
37474c1cdee6SMike Smith     {"ACPI_LV_PACKAGE",		ACPI_LV_PACKAGE},
3748d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY1",	ACPI_LV_VERBOSITY1},
3749d62ab2f4SMitsuru IWASAKI 
3750d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 2 [Function tracing and memory allocation] */
3751d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_ALLOCATIONS",	ACPI_LV_ALLOCATIONS},
3752d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_FUNCTIONS",	ACPI_LV_FUNCTIONS},
3753d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_OPTIMIZATIONS",	ACPI_LV_OPTIMIZATIONS},
3754d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY2",	ACPI_LV_VERBOSITY2},
37554c1cdee6SMike Smith     {"ACPI_LV_ALL",		ACPI_LV_ALL},
3756d62ab2f4SMitsuru IWASAKI 
3757d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3758d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_MUTEX",		ACPI_LV_MUTEX},
3759d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_THREADS",		ACPI_LV_THREADS},
3760d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_IO",		ACPI_LV_IO},
3761d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_INTERRUPTS",	ACPI_LV_INTERRUPTS},
3762d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY3",	ACPI_LV_VERBOSITY3},
3763d62ab2f4SMitsuru IWASAKI 
3764d62ab2f4SMitsuru IWASAKI     /* Exceptionally verbose output -- also used in the global "DebugLevel"  */
376598479b04SMitsuru IWASAKI     {"ACPI_LV_AML_DISASSEMBLE",	ACPI_LV_AML_DISASSEMBLE},
376698479b04SMitsuru IWASAKI     {"ACPI_LV_VERBOSE_INFO",	ACPI_LV_VERBOSE_INFO},
376798479b04SMitsuru IWASAKI     {"ACPI_LV_FULL_TABLES",	ACPI_LV_FULL_TABLES},
376898479b04SMitsuru IWASAKI     {"ACPI_LV_EVENTS",		ACPI_LV_EVENTS},
376998479b04SMitsuru IWASAKI     {"ACPI_LV_VERBOSE",		ACPI_LV_VERBOSE},
377015e32d5dSMike Smith     {NULL, 0}
377115e32d5dSMike Smith };
377215e32d5dSMike Smith 
377315e32d5dSMike Smith static void
377415e32d5dSMike Smith acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
377515e32d5dSMike Smith {
377615e32d5dSMike Smith     char	*ep;
377715e32d5dSMike Smith     int		i, l;
37780ae55423SMike Smith     int		set;
377915e32d5dSMike Smith 
378015e32d5dSMike Smith     while (*cp) {
378115e32d5dSMike Smith 	if (isspace(*cp)) {
378215e32d5dSMike Smith 	    cp++;
378315e32d5dSMike Smith 	    continue;
378415e32d5dSMike Smith 	}
378515e32d5dSMike Smith 	ep = cp;
378615e32d5dSMike Smith 	while (*ep && !isspace(*ep))
378715e32d5dSMike Smith 	    ep++;
37880ae55423SMike Smith 	if (*cp == '!') {
37890ae55423SMike Smith 	    set = 0;
37900ae55423SMike Smith 	    cp++;
37910ae55423SMike Smith 	    if (cp == ep)
37920ae55423SMike Smith 		continue;
37930ae55423SMike Smith 	} else {
37940ae55423SMike Smith 	    set = 1;
37950ae55423SMike Smith 	}
379615e32d5dSMike Smith 	l = ep - cp;
379715e32d5dSMike Smith 	for (i = 0; tag[i].name != NULL; i++) {
379815e32d5dSMike Smith 	    if (!strncmp(cp, tag[i].name, l)) {
3799be2b1797SNate Lawson 		if (set)
380015e32d5dSMike Smith 		    *flag |= tag[i].value;
3801be2b1797SNate Lawson 		else
38020ae55423SMike Smith 		    *flag &= ~tag[i].value;
380315e32d5dSMike Smith 	    }
380415e32d5dSMike Smith 	}
380515e32d5dSMike Smith 	cp = ep;
380615e32d5dSMike Smith     }
380715e32d5dSMike Smith }
380815e32d5dSMike Smith 
380915e32d5dSMike Smith static void
38102a4ac806SMike Smith acpi_set_debugging(void *junk)
381115e32d5dSMike Smith {
38127e639165SNate Lawson     char	*layer, *level;
381315e32d5dSMike Smith 
38141d7b121cSNate Lawson     if (cold) {
38150ae55423SMike Smith 	AcpiDbgLayer = 0;
38160ae55423SMike Smith 	AcpiDbgLevel = 0;
38171d7b121cSNate Lawson     }
38181d7b121cSNate Lawson 
38192be111bfSDavide Italiano     layer = kern_getenv("debug.acpi.layer");
38202be111bfSDavide Italiano     level = kern_getenv("debug.acpi.level");
38217e639165SNate Lawson     if (layer == NULL && level == NULL)
38227e639165SNate Lawson 	return;
38230ae55423SMike Smith 
38247e639165SNate Lawson     printf("ACPI set debug");
38257e639165SNate Lawson     if (layer != NULL) {
38267e639165SNate Lawson 	if (strcmp("NONE", layer) != 0)
38277e639165SNate Lawson 	    printf(" layer '%s'", layer);
38287e639165SNate Lawson 	acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
38297e639165SNate Lawson 	freeenv(layer);
38301d7b121cSNate Lawson     }
38317e639165SNate Lawson     if (level != NULL) {
38327e639165SNate Lawson 	if (strcmp("NONE", level) != 0)
38337e639165SNate Lawson 	    printf(" level '%s'", level);
38347e639165SNate Lawson 	acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
38357e639165SNate Lawson 	freeenv(level);
38367e639165SNate Lawson     }
38377e639165SNate Lawson     printf("\n");
383815e32d5dSMike Smith }
3839bee4aa4aSNate Lawson 
3840be2b1797SNate Lawson SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3841be2b1797SNate Lawson 	NULL);
38421d7b121cSNate Lawson 
38431d7b121cSNate Lawson static int
38441d7b121cSNate Lawson acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
38451d7b121cSNate Lawson {
384654f6bca0SNate Lawson     int		 error, *dbg;
38471d7b121cSNate Lawson     struct	 debugtag *tag;
384854f6bca0SNate Lawson     struct	 sbuf sb;
38490e1152fcSHans Petter Selasky     char	 temp[128];
38501d7b121cSNate Lawson 
385154f6bca0SNate Lawson     if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
385254f6bca0SNate Lawson 	return (ENOMEM);
38531d7b121cSNate Lawson     if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
38541d7b121cSNate Lawson 	tag = &dbg_layer[0];
38551d7b121cSNate Lawson 	dbg = &AcpiDbgLayer;
38561d7b121cSNate Lawson     } else {
38571d7b121cSNate Lawson 	tag = &dbg_level[0];
38581d7b121cSNate Lawson 	dbg = &AcpiDbgLevel;
38591d7b121cSNate Lawson     }
38601d7b121cSNate Lawson 
38611d7b121cSNate Lawson     /* Get old values if this is a get request. */
386215e2f34fSNate Lawson     ACPI_SERIAL_BEGIN(acpi);
38631d7b121cSNate Lawson     if (*dbg == 0) {
386454f6bca0SNate Lawson 	sbuf_cpy(&sb, "NONE");
38651d7b121cSNate Lawson     } else if (req->newptr == NULL) {
38661d7b121cSNate Lawson 	for (; tag->name != NULL; tag++) {
386754f6bca0SNate Lawson 	    if ((*dbg & tag->value) == tag->value)
386854f6bca0SNate Lawson 		sbuf_printf(&sb, "%s ", tag->name);
38691d7b121cSNate Lawson 	}
38701d7b121cSNate Lawson     }
387154f6bca0SNate Lawson     sbuf_trim(&sb);
387254f6bca0SNate Lawson     sbuf_finish(&sb);
38730e1152fcSHans Petter Selasky     strlcpy(temp, sbuf_data(&sb), sizeof(temp));
387454f6bca0SNate Lawson     sbuf_delete(&sb);
38751d7b121cSNate Lawson 
38760e1152fcSHans Petter Selasky     error = sysctl_handle_string(oidp, temp, sizeof(temp), req);
38770e1152fcSHans Petter Selasky 
38780e1152fcSHans Petter Selasky     /* Check for error or no change */
38791d7b121cSNate Lawson     if (error == 0 && req->newptr != NULL) {
38801d7b121cSNate Lawson 	*dbg = 0;
38810e1152fcSHans Petter Selasky 	kern_setenv((char *)oidp->oid_arg1, temp);
38821d7b121cSNate Lawson 	acpi_set_debugging(NULL);
38831d7b121cSNate Lawson     }
388415e2f34fSNate Lawson     ACPI_SERIAL_END(acpi);
38851d7b121cSNate Lawson 
38861d7b121cSNate Lawson     return (error);
38871d7b121cSNate Lawson }
3888bee4aa4aSNate Lawson 
38891d7b121cSNate Lawson SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
38901d7b121cSNate Lawson 	    "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
38911d7b121cSNate Lawson SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
38921d7b121cSNate Lawson 	    "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3893bee4aa4aSNate Lawson #endif /* ACPI_DEBUG */
3894f9390180SMitsuru IWASAKI 
3895f9390180SMitsuru IWASAKI static int
38962a18c71dSJung-uk Kim acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS)
38972a18c71dSJung-uk Kim {
38982a18c71dSJung-uk Kim 	int	error;
38992a18c71dSJung-uk Kim 	int	old;
39002a18c71dSJung-uk Kim 
39012a18c71dSJung-uk Kim 	old = acpi_debug_objects;
39022a18c71dSJung-uk Kim 	error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req);
39032a18c71dSJung-uk Kim 	if (error != 0 || req->newptr == NULL)
39042a18c71dSJung-uk Kim 		return (error);
39052a18c71dSJung-uk Kim 	if (old == acpi_debug_objects || (old && acpi_debug_objects))
39062a18c71dSJung-uk Kim 		return (0);
39072a18c71dSJung-uk Kim 
39082a18c71dSJung-uk Kim 	ACPI_SERIAL_BEGIN(acpi);
39092a18c71dSJung-uk Kim 	AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
39102a18c71dSJung-uk Kim 	ACPI_SERIAL_END(acpi);
39112a18c71dSJung-uk Kim 
39122a18c71dSJung-uk Kim 	return (0);
39132a18c71dSJung-uk Kim }
39142a18c71dSJung-uk Kim 
39152a18c71dSJung-uk Kim static int
3916ae19af49SJung-uk Kim acpi_parse_interfaces(char *str, struct acpi_interface *iface)
3917ae19af49SJung-uk Kim {
3918ae19af49SJung-uk Kim 	char *p;
3919ae19af49SJung-uk Kim 	size_t len;
3920ae19af49SJung-uk Kim 	int i, j;
3921ae19af49SJung-uk Kim 
3922ae19af49SJung-uk Kim 	p = str;
3923ae19af49SJung-uk Kim 	while (isspace(*p) || *p == ',')
3924ae19af49SJung-uk Kim 		p++;
3925ae19af49SJung-uk Kim 	len = strlen(p);
3926ae19af49SJung-uk Kim 	if (len == 0)
3927ae19af49SJung-uk Kim 		return (0);
3928ae19af49SJung-uk Kim 	p = strdup(p, M_TEMP);
3929ae19af49SJung-uk Kim 	for (i = 0; i < len; i++)
3930ae19af49SJung-uk Kim 		if (p[i] == ',')
3931ae19af49SJung-uk Kim 			p[i] = '\0';
3932ae19af49SJung-uk Kim 	i = j = 0;
3933ae19af49SJung-uk Kim 	while (i < len)
3934ae19af49SJung-uk Kim 		if (isspace(p[i]) || p[i] == '\0')
3935ae19af49SJung-uk Kim 			i++;
3936ae19af49SJung-uk Kim 		else {
3937ae19af49SJung-uk Kim 			i += strlen(p + i) + 1;
3938ae19af49SJung-uk Kim 			j++;
3939ae19af49SJung-uk Kim 		}
3940ae19af49SJung-uk Kim 	if (j == 0) {
3941ae19af49SJung-uk Kim 		free(p, M_TEMP);
3942ae19af49SJung-uk Kim 		return (0);
3943ae19af49SJung-uk Kim 	}
3944ae19af49SJung-uk Kim 	iface->data = malloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK);
3945ae19af49SJung-uk Kim 	iface->num = j;
3946ae19af49SJung-uk Kim 	i = j = 0;
3947ae19af49SJung-uk Kim 	while (i < len)
3948ae19af49SJung-uk Kim 		if (isspace(p[i]) || p[i] == '\0')
3949ae19af49SJung-uk Kim 			i++;
3950ae19af49SJung-uk Kim 		else {
3951ae19af49SJung-uk Kim 			iface->data[j] = p + i;
3952ae19af49SJung-uk Kim 			i += strlen(p + i) + 1;
3953ae19af49SJung-uk Kim 			j++;
3954ae19af49SJung-uk Kim 		}
3955ae19af49SJung-uk Kim 
3956ae19af49SJung-uk Kim 	return (j);
3957ae19af49SJung-uk Kim }
3958ae19af49SJung-uk Kim 
3959ae19af49SJung-uk Kim static void
3960ae19af49SJung-uk Kim acpi_free_interfaces(struct acpi_interface *iface)
3961ae19af49SJung-uk Kim {
3962ae19af49SJung-uk Kim 
3963ae19af49SJung-uk Kim 	free(iface->data[0], M_TEMP);
3964ae19af49SJung-uk Kim 	free(iface->data, M_TEMP);
3965ae19af49SJung-uk Kim }
3966ae19af49SJung-uk Kim 
3967ae19af49SJung-uk Kim static void
3968ae19af49SJung-uk Kim acpi_reset_interfaces(device_t dev)
3969ae19af49SJung-uk Kim {
3970ae19af49SJung-uk Kim 	struct acpi_interface list;
3971ae19af49SJung-uk Kim 	ACPI_STATUS status;
3972ae19af49SJung-uk Kim 	int i;
3973ae19af49SJung-uk Kim 
3974ae19af49SJung-uk Kim 	if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) {
3975ae19af49SJung-uk Kim 		for (i = 0; i < list.num; i++) {
3976ae19af49SJung-uk Kim 			status = AcpiInstallInterface(list.data[i]);
3977ae19af49SJung-uk Kim 			if (ACPI_FAILURE(status))
3978ae19af49SJung-uk Kim 				device_printf(dev,
3979ae19af49SJung-uk Kim 				    "failed to install _OSI(\"%s\"): %s\n",
3980ae19af49SJung-uk Kim 				    list.data[i], AcpiFormatException(status));
3981ae19af49SJung-uk Kim 			else if (bootverbose)
3982ae19af49SJung-uk Kim 				device_printf(dev, "installed _OSI(\"%s\")\n",
3983ae19af49SJung-uk Kim 				    list.data[i]);
3984ae19af49SJung-uk Kim 		}
3985ae19af49SJung-uk Kim 		acpi_free_interfaces(&list);
3986ae19af49SJung-uk Kim 	}
3987ae19af49SJung-uk Kim 	if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) {
3988ae19af49SJung-uk Kim 		for (i = 0; i < list.num; i++) {
3989ae19af49SJung-uk Kim 			status = AcpiRemoveInterface(list.data[i]);
3990ae19af49SJung-uk Kim 			if (ACPI_FAILURE(status))
3991ae19af49SJung-uk Kim 				device_printf(dev,
3992ae19af49SJung-uk Kim 				    "failed to remove _OSI(\"%s\"): %s\n",
3993ae19af49SJung-uk Kim 				    list.data[i], AcpiFormatException(status));
3994ae19af49SJung-uk Kim 			else if (bootverbose)
3995ae19af49SJung-uk Kim 				device_printf(dev, "removed _OSI(\"%s\")\n",
3996ae19af49SJung-uk Kim 				    list.data[i]);
3997ae19af49SJung-uk Kim 		}
3998ae19af49SJung-uk Kim 		acpi_free_interfaces(&list);
3999ae19af49SJung-uk Kim 	}
4000ae19af49SJung-uk Kim }
4001ae19af49SJung-uk Kim 
4002ae19af49SJung-uk Kim static int
4003f9390180SMitsuru IWASAKI acpi_pm_func(u_long cmd, void *arg, ...)
4004f9390180SMitsuru IWASAKI {
4005f9390180SMitsuru IWASAKI 	int	state, acpi_state;
4006f9390180SMitsuru IWASAKI 	int	error;
4007f9390180SMitsuru IWASAKI 	struct	acpi_softc *sc;
4008f9390180SMitsuru IWASAKI 	va_list	ap;
4009f9390180SMitsuru IWASAKI 
4010f9390180SMitsuru IWASAKI 	error = 0;
4011f9390180SMitsuru IWASAKI 	switch (cmd) {
4012f9390180SMitsuru IWASAKI 	case POWER_CMD_SUSPEND:
4013f9390180SMitsuru IWASAKI 		sc = (struct acpi_softc *)arg;
4014f9390180SMitsuru IWASAKI 		if (sc == NULL) {
4015f9390180SMitsuru IWASAKI 			error = EINVAL;
4016f9390180SMitsuru IWASAKI 			goto out;
4017f9390180SMitsuru IWASAKI 		}
4018f9390180SMitsuru IWASAKI 
4019f9390180SMitsuru IWASAKI 		va_start(ap, arg);
4020f9390180SMitsuru IWASAKI 		state = va_arg(ap, int);
4021f9390180SMitsuru IWASAKI 		va_end(ap);
4022f9390180SMitsuru IWASAKI 
4023f9390180SMitsuru IWASAKI 		switch (state) {
4024f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_STANDBY:
4025f9390180SMitsuru IWASAKI 			acpi_state = sc->acpi_standby_sx;
4026f9390180SMitsuru IWASAKI 			break;
4027f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_SUSPEND:
4028f9390180SMitsuru IWASAKI 			acpi_state = sc->acpi_suspend_sx;
4029f9390180SMitsuru IWASAKI 			break;
4030f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_HIBERNATE:
4031f9390180SMitsuru IWASAKI 			acpi_state = ACPI_STATE_S4;
4032f9390180SMitsuru IWASAKI 			break;
4033f9390180SMitsuru IWASAKI 		default:
4034f9390180SMitsuru IWASAKI 			error = EINVAL;
4035f9390180SMitsuru IWASAKI 			goto out;
4036f9390180SMitsuru IWASAKI 		}
4037f9390180SMitsuru IWASAKI 
403800a30448SNate Lawson 		if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
403900a30448SNate Lawson 			error = ENXIO;
4040f9390180SMitsuru IWASAKI 		break;
4041f9390180SMitsuru IWASAKI 	default:
4042f9390180SMitsuru IWASAKI 		error = EINVAL;
4043f9390180SMitsuru IWASAKI 		goto out;
4044f9390180SMitsuru IWASAKI 	}
4045f9390180SMitsuru IWASAKI 
4046f9390180SMitsuru IWASAKI out:
4047f9390180SMitsuru IWASAKI 	return (error);
4048f9390180SMitsuru IWASAKI }
4049f9390180SMitsuru IWASAKI 
4050f9390180SMitsuru IWASAKI static void
4051f9390180SMitsuru IWASAKI acpi_pm_register(void *arg)
4052f9390180SMitsuru IWASAKI {
4053be2b1797SNate Lawson     if (!cold || resource_disabled("acpi", 0))
40546c407052SMitsuru IWASAKI 	return;
4055f9390180SMitsuru IWASAKI 
4056f9390180SMitsuru IWASAKI     power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
4057f9390180SMitsuru IWASAKI }
4058f9390180SMitsuru IWASAKI 
4059f9390180SMitsuru IWASAKI SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);
4060