xref: /freebsd/sys/dev/acpica/acpi.c (revision 0d81cf1227ed5d74ea06c5fecaaa84cdbeeaaab2)
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 
7115e32d5dSMike Smith MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
7215e32d5dSMike Smith 
73be2b1797SNate Lawson /* Hooks for the ACPI CA debugging infrastructure */
74cb9b0d80SMike Smith #define _COMPONENT	ACPI_BUS
75b53f2771SMike Smith ACPI_MODULE_NAME("ACPI")
760ae55423SMike Smith 
7715e32d5dSMike Smith static d_open_t		acpiopen;
7815e32d5dSMike Smith static d_close_t	acpiclose;
7915e32d5dSMike Smith static d_ioctl_t	acpiioctl;
8015e32d5dSMike Smith 
8115e32d5dSMike Smith static struct cdevsw acpi_cdevsw = {
82dc08ffecSPoul-Henning Kamp 	.d_version =	D_VERSION,
837ac40f5fSPoul-Henning Kamp 	.d_open =	acpiopen,
847ac40f5fSPoul-Henning Kamp 	.d_close =	acpiclose,
857ac40f5fSPoul-Henning Kamp 	.d_ioctl =	acpiioctl,
867ac40f5fSPoul-Henning Kamp 	.d_name =	"acpi",
8715e32d5dSMike Smith };
8815e32d5dSMike Smith 
89ae19af49SJung-uk Kim struct acpi_interface {
90ae19af49SJung-uk Kim 	ACPI_STRING	*data;
91ae19af49SJung-uk Kim 	int		num;
92ae19af49SJung-uk Kim };
93ae19af49SJung-uk Kim 
94346eda4fSNate Lawson /* Global mutex for locking access to the ACPI subsystem. */
95cb9b0d80SMike Smith struct mtx	acpi_mutex;
96cb9b0d80SMike Smith 
9789fb5af8SNate Lawson /* Bitmap of device quirks. */
9889fb5af8SNate Lawson int		acpi_quirks;
9989fb5af8SNate Lawson 
100a0e73a12SJung-uk Kim /* Supported sleep states. */
101a0e73a12SJung-uk Kim static BOOLEAN	acpi_sleep_states[ACPI_S_STATE_COUNT];
102a0e73a12SJung-uk Kim 
1036d63101aSMike Smith static int	acpi_modevent(struct module *mod, int event, void *junk);
10415e32d5dSMike Smith static int	acpi_probe(device_t dev);
10515e32d5dSMike Smith static int	acpi_attach(device_t dev);
10610ce62b9SNate Lawson static int	acpi_suspend(device_t dev);
10710ce62b9SNate Lawson static int	acpi_resume(device_t dev);
108169b539aSNate Lawson static int	acpi_shutdown(device_t dev);
1093d844eddSAndriy Gapon static device_t	acpi_add_child(device_t bus, u_int order, const char *name,
110be2b1797SNate Lawson 			int unit);
11115e32d5dSMike Smith static int	acpi_print_child(device_t bus, device_t child);
11210ce62b9SNate Lawson static void	acpi_probe_nomatch(device_t bus, device_t child);
11310ce62b9SNate Lawson static void	acpi_driver_added(device_t dev, driver_t *driver);
114be2b1797SNate Lawson static int	acpi_read_ivar(device_t dev, device_t child, int index,
115be2b1797SNate Lawson 			uintptr_t *result);
116be2b1797SNate Lawson static int	acpi_write_ivar(device_t dev, device_t child, int index,
117be2b1797SNate Lawson 			uintptr_t value);
11891233413SNate Lawson static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
119ea233199SJohn Baldwin static void	acpi_reserve_resources(device_t dev);
120adad4744SNate Lawson static int	acpi_sysres_alloc(device_t dev);
121ea233199SJohn Baldwin static int	acpi_set_resource(device_t dev, device_t child, int type,
122ea233199SJohn Baldwin 			int rid, u_long start, u_long count);
123be2b1797SNate Lawson static struct resource *acpi_alloc_resource(device_t bus, device_t child,
124be2b1797SNate Lawson 			int type, int *rid, u_long start, u_long end,
125be2b1797SNate Lawson 			u_long count, u_int flags);
126be2b1797SNate Lawson static int	acpi_release_resource(device_t bus, device_t child, int type,
127be2b1797SNate Lawson 			int rid, struct resource *r);
1288b28b622SNate Lawson static void	acpi_delete_resource(device_t bus, device_t child, int type,
1298b28b622SNate Lawson 		    int rid);
1301e4925e8SNate Lawson static uint32_t	acpi_isa_get_logicalid(device_t dev);
1311e4925e8SNate Lawson static int	acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
132ce619b2eSNate Lawson static char	*acpi_device_id_probe(device_t bus, device_t dev, char **ids);
133ce619b2eSNate Lawson static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
134ce619b2eSNate Lawson 		    ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
135ce619b2eSNate Lawson 		    ACPI_BUFFER *ret);
136df8d2a32SNate Lawson static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
137df8d2a32SNate Lawson 		    void *context, void **retval);
138df8d2a32SNate Lawson static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
139df8d2a32SNate Lawson 		    int max_depth, acpi_scan_cb_t user_fn, void *arg);
140a7a3177fSJung-uk Kim static int	acpi_set_powerstate(device_t child, int state);
141be2b1797SNate Lawson static int	acpi_isa_pnp_probe(device_t bus, device_t child,
142be2b1797SNate Lawson 		    struct isa_pnp_id *ids);
14315e32d5dSMike Smith static void	acpi_probe_children(device_t bus);
144d227204dSJohn Baldwin static void	acpi_probe_order(ACPI_HANDLE handle, int *order);
145be2b1797SNate Lawson static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
146be2b1797SNate Lawson 		    void *context, void **status);
147a0e73a12SJung-uk Kim static void	acpi_sleep_enable(void *arg);
148a0e73a12SJung-uk Kim static ACPI_STATUS acpi_sleep_disable(struct acpi_softc *sc);
14900a30448SNate Lawson static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
15015e32d5dSMike Smith static void	acpi_shutdown_final(void *arg, int howto);
15113d4f7baSMitsuru IWASAKI static void	acpi_enable_fixed_events(struct acpi_softc *sc);
152d4b9ff91SNate Lawson static int	acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
153d4b9ff91SNate Lawson static int	acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
154d4b9ff91SNate Lawson static int	acpi_wake_prep_walk(int sstate);
15588a79fc0SNate Lawson static int	acpi_wake_sysctl_walk(device_t dev);
15688a79fc0SNate Lawson static int	acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
15715e32d5dSMike Smith static void	acpi_system_eventhandler_sleep(void *arg, int state);
15815e32d5dSMike Smith static void	acpi_system_eventhandler_wakeup(void *arg, int state);
159a0e73a12SJung-uk Kim static int	acpi_sname2sstate(const char *sname);
160a0e73a12SJung-uk Kim static const char *acpi_sstate2sname(int sstate);
161d75de536SMitsuru IWASAKI static int	acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
1621d073b1dSJohn Baldwin static int	acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
1632a18c71dSJung-uk Kim static int	acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS);
164f9390180SMitsuru IWASAKI static int	acpi_pm_func(u_long cmd, void *arg, ...);
165879d6c23STakanori Watanabe static int	acpi_child_location_str_method(device_t acdev, device_t child,
166879d6c23STakanori Watanabe 					       char *buf, size_t buflen);
167879d6c23STakanori Watanabe static int	acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
168879d6c23STakanori Watanabe 					      char *buf, size_t buflen);
169d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
170d320e05cSJohn Baldwin static void	acpi_enable_pcie(void);
171d320e05cSJohn Baldwin #endif
1720d484d24SJohn Baldwin static void	acpi_hint_device_unit(device_t acdev, device_t child,
1730d484d24SJohn Baldwin 		    const char *name, int *unitp);
174ae19af49SJung-uk Kim static void	acpi_reset_interfaces(device_t dev);
175879d6c23STakanori Watanabe 
17615e32d5dSMike Smith static device_method_t acpi_methods[] = {
17715e32d5dSMike Smith     /* Device interface */
17815e32d5dSMike Smith     DEVMETHOD(device_probe,		acpi_probe),
17915e32d5dSMike Smith     DEVMETHOD(device_attach,		acpi_attach),
180169b539aSNate Lawson     DEVMETHOD(device_shutdown,		acpi_shutdown),
18156a70eadSNate Lawson     DEVMETHOD(device_detach,		bus_generic_detach),
18210ce62b9SNate Lawson     DEVMETHOD(device_suspend,		acpi_suspend),
18310ce62b9SNate Lawson     DEVMETHOD(device_resume,		acpi_resume),
18415e32d5dSMike Smith 
18515e32d5dSMike Smith     /* Bus interface */
18615e32d5dSMike Smith     DEVMETHOD(bus_add_child,		acpi_add_child),
18715e32d5dSMike Smith     DEVMETHOD(bus_print_child,		acpi_print_child),
18810ce62b9SNate Lawson     DEVMETHOD(bus_probe_nomatch,	acpi_probe_nomatch),
18910ce62b9SNate Lawson     DEVMETHOD(bus_driver_added,		acpi_driver_added),
19015e32d5dSMike Smith     DEVMETHOD(bus_read_ivar,		acpi_read_ivar),
19115e32d5dSMike Smith     DEVMETHOD(bus_write_ivar,		acpi_write_ivar),
19291233413SNate Lawson     DEVMETHOD(bus_get_resource_list,	acpi_get_rlist),
193ea233199SJohn Baldwin     DEVMETHOD(bus_set_resource,		acpi_set_resource),
19491233413SNate Lawson     DEVMETHOD(bus_get_resource,		bus_generic_rl_get_resource),
19515e32d5dSMike Smith     DEVMETHOD(bus_alloc_resource,	acpi_alloc_resource),
19615e32d5dSMike Smith     DEVMETHOD(bus_release_resource,	acpi_release_resource),
1978b28b622SNate Lawson     DEVMETHOD(bus_delete_resource,	acpi_delete_resource),
198879d6c23STakanori Watanabe     DEVMETHOD(bus_child_pnpinfo_str,	acpi_child_pnpinfo_str_method),
199879d6c23STakanori Watanabe     DEVMETHOD(bus_child_location_str,	acpi_child_location_str_method),
20015e32d5dSMike Smith     DEVMETHOD(bus_activate_resource,	bus_generic_activate_resource),
20115e32d5dSMike Smith     DEVMETHOD(bus_deactivate_resource,	bus_generic_deactivate_resource),
20215e32d5dSMike Smith     DEVMETHOD(bus_setup_intr,		bus_generic_setup_intr),
20315e32d5dSMike Smith     DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),
2040d484d24SJohn Baldwin     DEVMETHOD(bus_hint_device_unit,	acpi_hint_device_unit),
20515e32d5dSMike Smith 
206ce619b2eSNate Lawson     /* ACPI bus */
207ce619b2eSNate Lawson     DEVMETHOD(acpi_id_probe,		acpi_device_id_probe),
208ce619b2eSNate Lawson     DEVMETHOD(acpi_evaluate_object,	acpi_device_eval_obj),
20910ce62b9SNate Lawson     DEVMETHOD(acpi_pwr_for_sleep,	acpi_device_pwr_for_sleep),
210df8d2a32SNate Lawson     DEVMETHOD(acpi_scan_children,	acpi_device_scan_children),
211ce619b2eSNate Lawson 
212bc0f2195SMike Smith     /* ISA emulation */
213bc0f2195SMike Smith     DEVMETHOD(isa_pnp_probe,		acpi_isa_pnp_probe),
214bc0f2195SMike Smith 
21515e32d5dSMike Smith     {0, 0}
21615e32d5dSMike Smith };
21715e32d5dSMike Smith 
21815e32d5dSMike Smith static driver_t acpi_driver = {
21915e32d5dSMike Smith     "acpi",
22015e32d5dSMike Smith     acpi_methods,
22115e32d5dSMike Smith     sizeof(struct acpi_softc),
22215e32d5dSMike Smith };
22315e32d5dSMike Smith 
2243273b005SMike Smith static devclass_t acpi_devclass;
2256d63101aSMike Smith DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
226a4ecd543SNate Lawson MODULE_VERSION(acpi, 1);
22715e32d5dSMike Smith 
22815e2f34fSNate Lawson ACPI_SERIAL_DECL(acpi, "ACPI root bus");
22915e2f34fSNate Lawson 
230adad4744SNate Lawson /* Local pools for managing system resources for ACPI child devices. */
231adad4744SNate Lawson static struct rman acpi_rman_io, acpi_rman_mem;
232adad4744SNate Lawson 
233bee4aa4aSNate Lawson #define ACPI_MINIMUM_AWAKETIME	5
234bee4aa4aSNate Lawson 
2355217af30SJohn Baldwin /* Holds the description of the acpi0 device. */
2365217af30SJohn Baldwin static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
2375217af30SJohn Baldwin 
238197b4dccSNate Lawson SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
2391d7b121cSNate Lawson static char acpi_ca_version[12];
2401d7b121cSNate Lawson SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
2411d7b121cSNate Lawson 	      acpi_ca_version, 0, "Version of Intel ACPI-CA");
24215e32d5dSMike Smith 
24315e32d5dSMike Smith /*
244ae19af49SJung-uk Kim  * Allow overriding _OSI methods.
245ae19af49SJung-uk Kim  */
246ae19af49SJung-uk Kim static char acpi_install_interface[256];
247ae19af49SJung-uk Kim TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface,
248ae19af49SJung-uk Kim     sizeof(acpi_install_interface));
249ae19af49SJung-uk Kim static char acpi_remove_interface[256];
250ae19af49SJung-uk Kim TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface,
251ae19af49SJung-uk Kim     sizeof(acpi_remove_interface));
252ae19af49SJung-uk Kim 
253ae19af49SJung-uk Kim /*
254413081d7SNate Lawson  * Allow override of whether methods execute in parallel or not.
255c9b8d77dSNate Lawson  * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
256c9b8d77dSNate Lawson  * errors for AML that really can't handle parallel method execution.
257c9b8d77dSNate Lawson  * It is off by default since this breaks recursive methods and
258c9b8d77dSNate Lawson  * some IBMs use such code.
259413081d7SNate Lawson  */
260c9b8d77dSNate Lawson static int acpi_serialize_methods;
261413081d7SNate Lawson TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods);
262413081d7SNate Lawson 
2632a18c71dSJung-uk Kim /* Allow users to dump Debug objects without ACPI debugger. */
2642a18c71dSJung-uk Kim static int acpi_debug_objects;
2652a18c71dSJung-uk Kim TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects);
2662a18c71dSJung-uk Kim SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects,
2672a18c71dSJung-uk Kim     CTLFLAG_RW | CTLTYPE_INT, NULL, 0, acpi_debug_objects_sysctl, "I",
2682a18c71dSJung-uk Kim     "Enable Debug objects");
2692a18c71dSJung-uk Kim 
2702a18c71dSJung-uk Kim /* Allow the interpreter to ignore common mistakes in BIOS. */
2712a18c71dSJung-uk Kim static int acpi_interpreter_slack = 1;
2722a18c71dSJung-uk Kim TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack);
2732a18c71dSJung-uk Kim SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RDTUN,
2742a18c71dSJung-uk Kim     &acpi_interpreter_slack, 1, "Turn on interpreter slack mode.");
2752a18c71dSJung-uk Kim 
2760755473bSJung-uk Kim /* Reset system clock while resuming.  XXX Remove once tested. */
2770755473bSJung-uk Kim static int acpi_reset_clock = 1;
2780755473bSJung-uk Kim TUNABLE_INT("debug.acpi.reset_clock", &acpi_reset_clock);
2790755473bSJung-uk Kim SYSCTL_INT(_debug_acpi, OID_AUTO, reset_clock, CTLFLAG_RW,
2800755473bSJung-uk Kim     &acpi_reset_clock, 1, "Reset system clock while resuming.");
2810755473bSJung-uk Kim 
28239da3eb3SNate Lawson /* Allow users to override quirks. */
28339da3eb3SNate Lawson TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
28439da3eb3SNate Lawson 
28593bfd059SNate Lawson static int acpi_susp_bounce;
28693bfd059SNate Lawson SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
28793bfd059SNate Lawson     &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
28893bfd059SNate Lawson 
289c9b8d77dSNate Lawson /*
2906d63101aSMike Smith  * ACPI can only be loaded as a module by the loader; activating it after
2916d63101aSMike Smith  * system bootstrap time is not useful, and can be fatal to the system.
2928c0879b6SJohn Baldwin  * It also cannot be unloaded, since the entire system bus hierarchy hangs
293be2b1797SNate Lawson  * off it.
2946d63101aSMike Smith  */
2956d63101aSMike Smith static int
2966d63101aSMike Smith acpi_modevent(struct module *mod, int event, void *junk)
2976d63101aSMike Smith {
2986d63101aSMike Smith     switch (event) {
2996d63101aSMike Smith     case MOD_LOAD:
30087b45ed5SMitsuru IWASAKI 	if (!cold) {
30187b45ed5SMitsuru IWASAKI 	    printf("The ACPI driver cannot be loaded after boot.\n");
3026d63101aSMike Smith 	    return (EPERM);
30387b45ed5SMitsuru IWASAKI 	}
3046d63101aSMike Smith 	break;
3056d63101aSMike Smith     case MOD_UNLOAD:
306f9390180SMitsuru IWASAKI 	if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
3076d63101aSMike Smith 	    return (EBUSY);
308f9390180SMitsuru IWASAKI 	break;
3096d63101aSMike Smith     default:
3106d63101aSMike Smith 	break;
3116d63101aSMike Smith     }
3126d63101aSMike Smith     return (0);
3136d63101aSMike Smith }
3146d63101aSMike Smith 
3156d63101aSMike Smith /*
316bbc2815cSJohn Baldwin  * Perform early initialization.
31715e32d5dSMike Smith  */
318bbc2815cSJohn Baldwin ACPI_STATUS
319bbc2815cSJohn Baldwin acpi_Startup(void)
32015e32d5dSMike Smith {
32189fb5af8SNate Lawson     static int started = 0;
3222be4e471SJung-uk Kim     ACPI_STATUS status;
3232be4e471SJung-uk Kim     int val;
32415e32d5dSMike Smith 
3251b8c233dSPeter Pentchev     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3261b8c233dSPeter Pentchev 
327bee4aa4aSNate Lawson     /* Only run the startup code once.  The MADT driver also calls this. */
328bbc2815cSJohn Baldwin     if (started)
3292be4e471SJung-uk Kim 	return_VALUE (AE_OK);
330bbc2815cSJohn Baldwin     started = 1;
33115e32d5dSMike Smith 
332413081d7SNate Lawson     /*
3332be4e471SJung-uk Kim      * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
3342be4e471SJung-uk Kim      * if more tables exist.
335413081d7SNate Lawson      */
3362be4e471SJung-uk Kim     if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
3372be4e471SJung-uk Kim 	printf("ACPI: Table initialisation failed: %s\n",
3382be4e471SJung-uk Kim 	    AcpiFormatException(status));
3392be4e471SJung-uk Kim 	return_VALUE (status);
34015e32d5dSMike Smith     }
3413184cf5aSNate Lawson 
34289fb5af8SNate Lawson     /* Set up any quirks we have for this system. */
3432be4e471SJung-uk Kim     if (acpi_quirks == ACPI_Q_OK)
34489fb5af8SNate Lawson 	acpi_table_quirks(&acpi_quirks);
34589fb5af8SNate Lawson 
34639da3eb3SNate Lawson     /* If the user manually set the disabled hint to 0, force-enable ACPI. */
34789fb5af8SNate Lawson     if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
34889fb5af8SNate Lawson 	acpi_quirks &= ~ACPI_Q_BROKEN;
34989fb5af8SNate Lawson     if (acpi_quirks & ACPI_Q_BROKEN) {
35089fb5af8SNate Lawson 	printf("ACPI disabled by blacklist.  Contact your BIOS vendor.\n");
3512be4e471SJung-uk Kim 	status = AE_SUPPORT;
35289fb5af8SNate Lawson     }
3533184cf5aSNate Lawson 
3542be4e471SJung-uk Kim     return_VALUE (status);
355bbc2815cSJohn Baldwin }
356bbc2815cSJohn Baldwin 
357bbc2815cSJohn Baldwin /*
3585217af30SJohn Baldwin  * Detect ACPI and perform early initialisation.
359bbc2815cSJohn Baldwin  */
3605217af30SJohn Baldwin int
3615217af30SJohn Baldwin acpi_identify(void)
362bbc2815cSJohn Baldwin {
3635217af30SJohn Baldwin     ACPI_TABLE_RSDP	*rsdp;
3645217af30SJohn Baldwin     ACPI_TABLE_HEADER	*rsdt;
3655217af30SJohn Baldwin     ACPI_PHYSICAL_ADDRESS paddr;
3665217af30SJohn Baldwin     struct sbuf		sb;
367bbc2815cSJohn Baldwin 
368bbc2815cSJohn Baldwin     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
369bbc2815cSJohn Baldwin 
370bbc2815cSJohn Baldwin     if (!cold)
3715217af30SJohn Baldwin 	return (ENXIO);
372bbc2815cSJohn Baldwin 
373bbc2815cSJohn Baldwin     /* Check that we haven't been disabled with a hint. */
374bbc2815cSJohn Baldwin     if (resource_disabled("acpi", 0))
3755217af30SJohn Baldwin 	return (ENXIO);
376bbc2815cSJohn Baldwin 
3775217af30SJohn Baldwin     /* Check for other PM systems. */
3785217af30SJohn Baldwin     if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
3795217af30SJohn Baldwin 	power_pm_get_type() != POWER_PM_TYPE_ACPI) {
3805217af30SJohn Baldwin 	printf("ACPI identify failed, other PM system enabled.\n");
3815217af30SJohn Baldwin 	return (ENXIO);
3825217af30SJohn Baldwin     }
3834b1ff978SMark Santcroos 
3842be4e471SJung-uk Kim     /* Initialize root tables. */
3852be4e471SJung-uk Kim     if (ACPI_FAILURE(acpi_Startup())) {
3862be4e471SJung-uk Kim 	printf("ACPI: Try disabling either ACPI or apic support.\n");
3875217af30SJohn Baldwin 	return (ENXIO);
3882be4e471SJung-uk Kim     }
38915e32d5dSMike Smith 
3905217af30SJohn Baldwin     if ((paddr = AcpiOsGetRootPointer()) == 0 ||
3915217af30SJohn Baldwin 	(rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
3925217af30SJohn Baldwin 	return (ENXIO);
3935217af30SJohn Baldwin     if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
3945217af30SJohn Baldwin 	paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
3955217af30SJohn Baldwin     else
3965217af30SJohn Baldwin 	paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
3975217af30SJohn Baldwin     AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
3985217af30SJohn Baldwin 
3995217af30SJohn Baldwin     if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
4005217af30SJohn Baldwin 	return (ENXIO);
4015217af30SJohn Baldwin     sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN);
4025217af30SJohn Baldwin     sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
4035217af30SJohn Baldwin     sbuf_trim(&sb);
4045217af30SJohn Baldwin     sbuf_putc(&sb, ' ');
4055217af30SJohn Baldwin     sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
4065217af30SJohn Baldwin     sbuf_trim(&sb);
4075217af30SJohn Baldwin     sbuf_finish(&sb);
4085217af30SJohn Baldwin     sbuf_delete(&sb);
4095217af30SJohn Baldwin     AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
4105217af30SJohn Baldwin 
4115217af30SJohn Baldwin     snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
4125217af30SJohn Baldwin 
4135217af30SJohn Baldwin     return (0);
41415e32d5dSMike Smith }
41515e32d5dSMike Smith 
41615e32d5dSMike Smith /*
417bee4aa4aSNate Lawson  * Fetch some descriptive data from ACPI to put in our attach message.
41815e32d5dSMike Smith  */
41915e32d5dSMike Smith static int
42015e32d5dSMike Smith acpi_probe(device_t dev)
42115e32d5dSMike Smith {
42215e32d5dSMike Smith 
423b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
424f9390180SMitsuru IWASAKI 
4255217af30SJohn Baldwin     device_set_desc(dev, acpi_desc);
426bee4aa4aSNate Lawson 
4272be4e471SJung-uk Kim     return_VALUE (0);
42815e32d5dSMike Smith }
42915e32d5dSMike Smith 
43015e32d5dSMike Smith static int
43115e32d5dSMike Smith acpi_attach(device_t dev)
43215e32d5dSMike Smith {
43315e32d5dSMike Smith     struct acpi_softc	*sc;
434cb9b0d80SMike Smith     ACPI_STATUS		status;
435ea27c63eSNate Lawson     int			error, state;
43632d18aa5SMike Smith     UINT32		flags;
437ea27c63eSNate Lawson     UINT8		TypeA, TypeB;
438498d464fSMitsuru IWASAKI     char		*env;
43915e32d5dSMike Smith 
440b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
441bee4aa4aSNate Lawson 
44215e32d5dSMike Smith     sc = device_get_softc(dev);
44315e32d5dSMike Smith     sc->acpi_dev = dev;
44400a30448SNate Lawson     callout_init(&sc->susp_force_to, TRUE);
44515e32d5dSMike Smith 
4462be4e471SJung-uk Kim     error = ENXIO;
4472be4e471SJung-uk Kim 
44891233413SNate Lawson     /* Initialize resource manager. */
44991233413SNate Lawson     acpi_rman_io.rm_type = RMAN_ARRAY;
45091233413SNate Lawson     acpi_rman_io.rm_start = 0;
45191233413SNate Lawson     acpi_rman_io.rm_end = 0xffff;
4520bba6acfSJohn Baldwin     acpi_rman_io.rm_descr = "ACPI I/O ports";
45391233413SNate Lawson     if (rman_init(&acpi_rman_io) != 0)
45491233413SNate Lawson 	panic("acpi rman_init IO ports failed");
45591233413SNate Lawson     acpi_rman_mem.rm_type = RMAN_ARRAY;
45691233413SNate Lawson     acpi_rman_mem.rm_start = 0;
45791233413SNate Lawson     acpi_rman_mem.rm_end = ~0ul;
4580bba6acfSJohn Baldwin     acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
45991233413SNate Lawson     if (rman_init(&acpi_rman_mem) != 0)
46091233413SNate Lawson 	panic("acpi rman_init memory failed");
46191233413SNate Lawson 
4622be4e471SJung-uk Kim     /* Initialise the ACPI mutex */
4632be4e471SJung-uk Kim     mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
4642be4e471SJung-uk Kim 
4652be4e471SJung-uk Kim     /*
4662be4e471SJung-uk Kim      * Set the globals from our tunables.  This is needed because ACPI-CA
4672be4e471SJung-uk Kim      * uses UINT8 for some values and we have no tunable_byte.
4682be4e471SJung-uk Kim      */
4692a18c71dSJung-uk Kim     AcpiGbl_AllMethodsSerialized = acpi_serialize_methods ? TRUE : FALSE;
4702a18c71dSJung-uk Kim     AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE;
4712a18c71dSJung-uk Kim     AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
4722a18c71dSJung-uk Kim 
4732a18c71dSJung-uk Kim #ifndef ACPI_DEBUG
4742a18c71dSJung-uk Kim     /*
4752a18c71dSJung-uk Kim      * Disable all debugging layers and levels.
4762a18c71dSJung-uk Kim      */
4772a18c71dSJung-uk Kim     AcpiDbgLayer = 0;
4782a18c71dSJung-uk Kim     AcpiDbgLevel = 0;
4792a18c71dSJung-uk Kim #endif
4802be4e471SJung-uk Kim 
4812be4e471SJung-uk Kim     /* Start up the ACPI CA subsystem. */
4822be4e471SJung-uk Kim     status = AcpiInitializeSubsystem();
4832be4e471SJung-uk Kim     if (ACPI_FAILURE(status)) {
4842be4e471SJung-uk Kim 	device_printf(dev, "Could not initialize Subsystem: %s\n",
4852be4e471SJung-uk Kim 		      AcpiFormatException(status));
4862be4e471SJung-uk Kim 	goto out;
4872be4e471SJung-uk Kim     }
4882be4e471SJung-uk Kim 
489ae19af49SJung-uk Kim     /* Override OS interfaces if the user requested. */
490ae19af49SJung-uk Kim     acpi_reset_interfaces(dev);
491ae19af49SJung-uk Kim 
4922be4e471SJung-uk Kim     /* Load ACPI name space. */
4932be4e471SJung-uk Kim     status = AcpiLoadTables();
4942be4e471SJung-uk Kim     if (ACPI_FAILURE(status)) {
4952be4e471SJung-uk Kim 	device_printf(dev, "Could not load Namespace: %s\n",
4962be4e471SJung-uk Kim 		      AcpiFormatException(status));
4972be4e471SJung-uk Kim 	goto out;
4982be4e471SJung-uk Kim     }
4992be4e471SJung-uk Kim 
500d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
501d320e05cSJohn Baldwin     /* Handle MCFG table if present. */
502d320e05cSJohn Baldwin     acpi_enable_pcie();
503d320e05cSJohn Baldwin #endif
504d320e05cSJohn Baldwin 
50515e32d5dSMike Smith     /*
506be2b1797SNate Lawson      * Note that some systems (specifically, those with namespace evaluation
507be2b1797SNate Lawson      * issues that require the avoidance of parts of the namespace) must
508be2b1797SNate Lawson      * avoid running _INI and _STA on everything, as well as dodging the final
509be2b1797SNate Lawson      * object init pass.
51015e32d5dSMike Smith      *
51132d18aa5SMike Smith      * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
51232d18aa5SMike Smith      *
513be2b1797SNate Lawson      * XXX We should arrange for the object init pass after we have attached
514be2b1797SNate Lawson      *     all our child devices, but on many systems it works here.
51515e32d5dSMike Smith      */
51632d18aa5SMike Smith     flags = 0;
517d786139cSMaxime Henrion     if (testenv("debug.acpi.avoid"))
51832d18aa5SMike Smith 	flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
519bee4aa4aSNate Lawson 
520bee4aa4aSNate Lawson     /* Bring the hardware and basic handlers online. */
521b53f2771SMike Smith     if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
522be2b1797SNate Lawson 	device_printf(dev, "Could not enable ACPI: %s\n",
523be2b1797SNate Lawson 		      AcpiFormatException(status));
524cb9b0d80SMike Smith 	goto out;
52515e32d5dSMike Smith     }
52615e32d5dSMike Smith 
527f8335e3aSNate Lawson     /*
528f8335e3aSNate Lawson      * Call the ECDT probe function to provide EC functionality before
529f8335e3aSNate Lawson      * the namespace has been evaluated.
530da72d149SNate Lawson      *
531da72d149SNate Lawson      * XXX This happens before the sysresource devices have been probed and
532da72d149SNate Lawson      * attached so its resources come from nexus0.  In practice, this isn't
533da72d149SNate Lawson      * a problem but should be addressed eventually.
534f8335e3aSNate Lawson      */
535f8335e3aSNate Lawson     acpi_ec_ecdt_probe(dev);
536f8335e3aSNate Lawson 
537bee4aa4aSNate Lawson     /* Bring device objects and regions online. */
538b69ed3f4SMitsuru IWASAKI     if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
539be2b1797SNate Lawson 	device_printf(dev, "Could not initialize ACPI objects: %s\n",
540be2b1797SNate Lawson 		      AcpiFormatException(status));
541b69ed3f4SMitsuru IWASAKI 	goto out;
542b69ed3f4SMitsuru IWASAKI     }
543b69ed3f4SMitsuru IWASAKI 
54415e32d5dSMike Smith     /*
5451d073b1dSJohn Baldwin      * Setup our sysctl tree.
5461d073b1dSJohn Baldwin      *
5471d073b1dSJohn Baldwin      * XXX: This doesn't check to make sure that none of these fail.
5481d073b1dSJohn Baldwin      */
5491d073b1dSJohn Baldwin     sysctl_ctx_init(&sc->acpi_sysctl_ctx);
5501d073b1dSJohn Baldwin     sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
5511d073b1dSJohn Baldwin 			       SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
5521d073b1dSJohn Baldwin 			       device_get_name(dev), CTLFLAG_RD, 0, "");
5531d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
554d75de536SMitsuru IWASAKI 	OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
555d75de536SMitsuru IWASAKI 	0, 0, acpi_supported_sleep_state_sysctl, "A", "");
556d75de536SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5571d073b1dSJohn Baldwin 	OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
5581d073b1dSJohn Baldwin 	&sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
5591d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5601d073b1dSJohn Baldwin 	OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
5611d073b1dSJohn Baldwin 	&sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
5621d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5631d073b1dSJohn Baldwin 	OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
5641d073b1dSJohn Baldwin 	&sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
565f86214b6SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
566f86214b6SMitsuru IWASAKI 	OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
567f86214b6SMitsuru IWASAKI 	&sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
568f86214b6SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
569f86214b6SMitsuru IWASAKI 	OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
570f86214b6SMitsuru IWASAKI 	&sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
5712d644607SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
572197b4dccSNate Lawson 	OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
573197b4dccSNate Lawson 	"sleep delay");
574ff01efb5SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
575197b4dccSNate Lawson 	OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
5761611ea87SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
577197b4dccSNate Lawson 	OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
578d85e6785SNate Lawson     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
579d85e6785SNate Lawson 	OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
580d85e6785SNate Lawson 	&sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
581d1b16e18SNate Lawson     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
582d1b16e18SNate Lawson 	OID_AUTO, "handle_reboot", CTLFLAG_RW,
583d1b16e18SNate Lawson 	&sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
584bf0c18ecSNate Lawson 
585bf0c18ecSNate Lawson     /*
5862b9609abSNate Lawson      * Default to 1 second before sleeping to give some machines time to
587bf0c18ecSNate Lawson      * stabilize.
588bf0c18ecSNate Lawson      */
5892b9609abSNate Lawson     sc->acpi_sleep_delay = 1;
5902d644607SMitsuru IWASAKI     if (bootverbose)
5912d644607SMitsuru IWASAKI 	sc->acpi_verbose = 1;
592965a34fbSNate Lawson     if ((env = getenv("hw.acpi.verbose")) != NULL) {
593965a34fbSNate Lawson 	if (strcmp(env, "0") != 0)
594498d464fSMitsuru IWASAKI 	    sc->acpi_verbose = 1;
595498d464fSMitsuru IWASAKI 	freeenv(env);
596498d464fSMitsuru IWASAKI     }
5971d073b1dSJohn Baldwin 
598ac731af5SJung-uk Kim     /* Only enable reboot by default if the FADT says it is available. */
599ac731af5SJung-uk Kim     if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER)
600ac731af5SJung-uk Kim 	sc->acpi_handle_reboot = 1;
601ac731af5SJung-uk Kim 
6022d610c46SNate Lawson     /* Only enable S4BIOS by default if the FACS says it is available. */
603129d3046SJung-uk Kim     if (AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
6042d610c46SNate Lawson 	sc->acpi_s4bios = 1;
6052d610c46SNate Lawson 
606a0e73a12SJung-uk Kim     /* Probe all supported sleep states. */
607a0e73a12SJung-uk Kim     acpi_sleep_states[ACPI_STATE_S0] = TRUE;
608a0e73a12SJung-uk Kim     for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
609a0e73a12SJung-uk Kim 	if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
610a0e73a12SJung-uk Kim 	    acpi_sleep_states[state] = TRUE;
611a0e73a12SJung-uk Kim 
6121d073b1dSJohn Baldwin     /*
613ea27c63eSNate Lawson      * Dispatch the default sleep state to devices.  The lid switch is set
614a0e73a12SJung-uk Kim      * to UNKNOWN by default to avoid surprising users.
61515e32d5dSMike Smith      */
616a0e73a12SJung-uk Kim     sc->acpi_power_button_sx = acpi_sleep_states[ACPI_STATE_S5] ?
617a0e73a12SJung-uk Kim 	ACPI_STATE_S5 : ACPI_STATE_UNKNOWN;
618a0e73a12SJung-uk Kim     sc->acpi_lid_switch_sx = ACPI_STATE_UNKNOWN;
619a0e73a12SJung-uk Kim     sc->acpi_standby_sx = acpi_sleep_states[ACPI_STATE_S1] ?
620a0e73a12SJung-uk Kim 	ACPI_STATE_S1 : ACPI_STATE_UNKNOWN;
621a0e73a12SJung-uk Kim     sc->acpi_suspend_sx = acpi_sleep_states[ACPI_STATE_S3] ?
622a0e73a12SJung-uk Kim 	ACPI_STATE_S3 : ACPI_STATE_UNKNOWN;
62315e32d5dSMike Smith 
624ea27c63eSNate Lawson     /* Pick the first valid sleep state for the sleep button default. */
625a0e73a12SJung-uk Kim     sc->acpi_sleep_button_sx = ACPI_STATE_UNKNOWN;
62600a30448SNate Lawson     for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
627a0e73a12SJung-uk Kim 	if (acpi_sleep_states[state]) {
628ea27c63eSNate Lawson 	    sc->acpi_sleep_button_sx = state;
629ea27c63eSNate Lawson 	    break;
630ea27c63eSNate Lawson 	}
631ea27c63eSNate Lawson 
63213d4f7baSMitsuru IWASAKI     acpi_enable_fixed_events(sc);
63315e32d5dSMike Smith 
63415e32d5dSMike Smith     /*
63515e32d5dSMike Smith      * Scan the namespace and attach/initialise children.
63615e32d5dSMike Smith      */
63715e32d5dSMike Smith 
63859e472e9SNate Lawson     /* Register our shutdown handler. */
639be2b1797SNate Lawson     EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
640be2b1797SNate Lawson 	SHUTDOWN_PRI_LAST);
64115e32d5dSMike Smith 
64215e32d5dSMike Smith     /*
64315e32d5dSMike Smith      * Register our acpi event handlers.
64415e32d5dSMike Smith      * XXX should be configurable eg. via userland policy manager.
64515e32d5dSMike Smith      */
646be2b1797SNate Lawson     EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
647be2b1797SNate Lawson 	sc, ACPI_EVENT_PRI_LAST);
648be2b1797SNate Lawson     EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
649be2b1797SNate Lawson 	sc, ACPI_EVENT_PRI_LAST);
65015e32d5dSMike Smith 
651be2b1797SNate Lawson     /* Flag our initial states. */
652a0e73a12SJung-uk Kim     sc->acpi_enabled = TRUE;
65315e32d5dSMike Smith     sc->acpi_sstate = ACPI_STATE_S0;
654a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = TRUE;
65515e32d5dSMike Smith 
656be2b1797SNate Lawson     /* Create the control device */
657a89fcf28STakanori Watanabe     sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
6582a4689e8SRobert Watson 			      "acpi");
65915e32d5dSMike Smith     sc->acpi_dev_t->si_drv1 = sc;
66015e32d5dSMike Smith 
661be2b1797SNate Lawson     if ((error = acpi_machdep_init(dev)))
662f86214b6SMitsuru IWASAKI 	goto out;
663f86214b6SMitsuru IWASAKI 
664f9390180SMitsuru IWASAKI     /* Register ACPI again to pass the correct argument of pm_func. */
665f9390180SMitsuru IWASAKI     power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
666f9390180SMitsuru IWASAKI 
667eeb6dba2SJohn Baldwin     if (!acpi_disabled("bus"))
668eeb6dba2SJohn Baldwin 	acpi_probe_children(dev);
669eeb6dba2SJohn Baldwin 
6705a77b11bSJung-uk Kim     /* Update all GPEs and enable runtime GPEs. */
6715a77b11bSJung-uk Kim     status = AcpiUpdateAllGpes();
6725a77b11bSJung-uk Kim     if (ACPI_FAILURE(status))
6735a77b11bSJung-uk Kim 	device_printf(dev, "Could not update all GPEs: %s\n",
6745a77b11bSJung-uk Kim 	    AcpiFormatException(status));
6755a77b11bSJung-uk Kim 
676a0e73a12SJung-uk Kim     /* Allow sleep request after a while. */
677a0e73a12SJung-uk Kim     timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME);
678a0e73a12SJung-uk Kim 
679cb9b0d80SMike Smith     error = 0;
680cb9b0d80SMike Smith 
681cb9b0d80SMike Smith  out:
682cb9b0d80SMike Smith     return_VALUE (error);
68315e32d5dSMike Smith }
68415e32d5dSMike Smith 
685a7a3177fSJung-uk Kim static void
686a7a3177fSJung-uk Kim acpi_set_power_children(device_t dev, int state)
687a7a3177fSJung-uk Kim {
688a7a3177fSJung-uk Kim 	device_t child, parent;
689a7a3177fSJung-uk Kim 	device_t *devlist;
690a7a3177fSJung-uk Kim 	struct pci_devinfo *dinfo;
691a7a3177fSJung-uk Kim 	int dstate, i, numdevs;
692a7a3177fSJung-uk Kim 
693a7a3177fSJung-uk Kim 	if (device_get_children(dev, &devlist, &numdevs) != 0)
694a7a3177fSJung-uk Kim 		return;
695a7a3177fSJung-uk Kim 
696a7a3177fSJung-uk Kim 	/*
697a7a3177fSJung-uk Kim 	 * Retrieve and set D-state for the sleep state if _SxD is present.
698a7a3177fSJung-uk Kim 	 * Skip children who aren't attached since they are handled separately.
699a7a3177fSJung-uk Kim 	 */
700a7a3177fSJung-uk Kim 	parent = device_get_parent(dev);
701a7a3177fSJung-uk Kim 	for (i = 0; i < numdevs; i++) {
702a7a3177fSJung-uk Kim 		child = devlist[i];
703a7a3177fSJung-uk Kim 		dinfo = device_get_ivars(child);
704a7a3177fSJung-uk Kim 		dstate = state;
705a7a3177fSJung-uk Kim 		if (device_is_attached(child) &&
706a7a3177fSJung-uk Kim 		    acpi_device_pwr_for_sleep(parent, dev, &dstate) == 0)
707a7a3177fSJung-uk Kim 			acpi_set_powerstate(child, dstate);
708a7a3177fSJung-uk Kim 	}
709a7a3177fSJung-uk Kim 	free(devlist, M_TEMP);
710a7a3177fSJung-uk Kim }
711a7a3177fSJung-uk Kim 
712169b539aSNate Lawson static int
71310ce62b9SNate Lawson acpi_suspend(device_t dev)
71410ce62b9SNate Lawson {
715a7a3177fSJung-uk Kim     int error;
71610ce62b9SNate Lawson 
717a56fe095SJohn Baldwin     GIANT_REQUIRED;
718a56fe095SJohn Baldwin 
71910ce62b9SNate Lawson     error = bus_generic_suspend(dev);
720a7a3177fSJung-uk Kim     if (error == 0)
721a7a3177fSJung-uk Kim 	acpi_set_power_children(dev, ACPI_STATE_D3);
72210ce62b9SNate Lawson 
72310ce62b9SNate Lawson     return (error);
72410ce62b9SNate Lawson }
72510ce62b9SNate Lawson 
72610ce62b9SNate Lawson static int
72710ce62b9SNate Lawson acpi_resume(device_t dev)
72810ce62b9SNate Lawson {
72910ce62b9SNate Lawson 
730a56fe095SJohn Baldwin     GIANT_REQUIRED;
731a56fe095SJohn Baldwin 
732a7a3177fSJung-uk Kim     acpi_set_power_children(dev, ACPI_STATE_D0);
73310ce62b9SNate Lawson 
73410ce62b9SNate Lawson     return (bus_generic_resume(dev));
73510ce62b9SNate Lawson }
73610ce62b9SNate Lawson 
73710ce62b9SNate Lawson static int
738169b539aSNate Lawson acpi_shutdown(device_t dev)
739169b539aSNate Lawson {
740169b539aSNate Lawson 
741a56fe095SJohn Baldwin     GIANT_REQUIRED;
742a56fe095SJohn Baldwin 
7430e414868SNate Lawson     /* Allow children to shutdown first. */
7440e414868SNate Lawson     bus_generic_shutdown(dev);
7450e414868SNate Lawson 
746bee4aa4aSNate Lawson     /*
747bee4aa4aSNate Lawson      * Enable any GPEs that are able to power-on the system (i.e., RTC).
748bee4aa4aSNate Lawson      * Also, disable any that are not valid for this state (most).
749bee4aa4aSNate Lawson      */
750d4b9ff91SNate Lawson     acpi_wake_prep_walk(ACPI_STATE_S5);
751d4b9ff91SNate Lawson 
752169b539aSNate Lawson     return (0);
753169b539aSNate Lawson }
754169b539aSNate Lawson 
75515e32d5dSMike Smith /*
75615e32d5dSMike Smith  * Handle a new device being added
75715e32d5dSMike Smith  */
75815e32d5dSMike Smith static device_t
7593d844eddSAndriy Gapon acpi_add_child(device_t bus, u_int order, const char *name, int unit)
76015e32d5dSMike Smith {
76115e32d5dSMike Smith     struct acpi_device	*ad;
76215e32d5dSMike Smith     device_t		child;
76315e32d5dSMike Smith 
764be2b1797SNate Lawson     if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
76515e32d5dSMike Smith 	return (NULL);
76615e32d5dSMike Smith 
76715e32d5dSMike Smith     resource_list_init(&ad->ad_rl);
76815e32d5dSMike Smith 
76915e32d5dSMike Smith     child = device_add_child_ordered(bus, order, name, unit);
77015e32d5dSMike Smith     if (child != NULL)
77115e32d5dSMike Smith 	device_set_ivars(child, ad);
77243ce1c77SNate Lawson     else
77343ce1c77SNate Lawson 	free(ad, M_ACPIDEV);
77415e32d5dSMike Smith     return (child);
77515e32d5dSMike Smith }
77615e32d5dSMike Smith 
77715e32d5dSMike Smith static int
77815e32d5dSMike Smith acpi_print_child(device_t bus, device_t child)
77915e32d5dSMike Smith {
78015e32d5dSMike Smith     struct acpi_device	 *adev = device_get_ivars(child);
78115e32d5dSMike Smith     struct resource_list *rl = &adev->ad_rl;
78215e32d5dSMike Smith     int retval = 0;
78315e32d5dSMike Smith 
78415e32d5dSMike Smith     retval += bus_print_child_header(bus, child);
7859ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "port",  SYS_RES_IOPORT, "%#lx");
7869ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
7879ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "irq",   SYS_RES_IRQ,    "%ld");
7889ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "drq",   SYS_RES_DRQ,    "%ld");
789a91c5fa8SNate Lawson     if (device_get_flags(child))
790a91c5fa8SNate Lawson 	retval += printf(" flags %#x", device_get_flags(child));
7912c8d3b23SNate Lawson     retval += bus_print_child_footer(bus, child);
79215e32d5dSMike Smith 
79315e32d5dSMike Smith     return (retval);
79415e32d5dSMike Smith }
79515e32d5dSMike Smith 
79610ce62b9SNate Lawson /*
79710ce62b9SNate Lawson  * If this device is an ACPI child but no one claimed it, attempt
79810ce62b9SNate Lawson  * to power it off.  We'll power it back up when a driver is added.
79910ce62b9SNate Lawson  *
80010ce62b9SNate Lawson  * XXX Disabled for now since many necessary devices (like fdc and
80110ce62b9SNate Lawson  * ATA) don't claim the devices we created for them but still expect
80210ce62b9SNate Lawson  * them to be powered up.
80310ce62b9SNate Lawson  */
80410ce62b9SNate Lawson static void
80510ce62b9SNate Lawson acpi_probe_nomatch(device_t bus, device_t child)
80610ce62b9SNate Lawson {
80796cf0b6dSWarner Losh #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
808a7a3177fSJung-uk Kim     acpi_set_powerstate(child, ACPI_STATE_D3);
80996cf0b6dSWarner Losh #endif
81010ce62b9SNate Lawson }
81110ce62b9SNate Lawson 
81210ce62b9SNate Lawson /*
81310ce62b9SNate Lawson  * If a new driver has a chance to probe a child, first power it up.
81410ce62b9SNate Lawson  *
81510ce62b9SNate Lawson  * XXX Disabled for now (see acpi_probe_nomatch for details).
81610ce62b9SNate Lawson  */
81710ce62b9SNate Lawson static void
81810ce62b9SNate Lawson acpi_driver_added(device_t dev, driver_t *driver)
81910ce62b9SNate Lawson {
82010ce62b9SNate Lawson     device_t child, *devlist;
82110ce62b9SNate Lawson     int i, numdevs;
82210ce62b9SNate Lawson 
82310ce62b9SNate Lawson     DEVICE_IDENTIFY(driver, dev);
824099ea4b5SWarner Losh     if (device_get_children(dev, &devlist, &numdevs))
825099ea4b5SWarner Losh 	    return;
82610ce62b9SNate Lawson     for (i = 0; i < numdevs; i++) {
82710ce62b9SNate Lawson 	child = devlist[i];
82810ce62b9SNate Lawson 	if (device_get_state(child) == DS_NOTPRESENT) {
82996cf0b6dSWarner Losh #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
830a7a3177fSJung-uk Kim 	    acpi_set_powerstate(child, ACPI_STATE_D0);
83110ce62b9SNate Lawson 	    if (device_probe_and_attach(child) != 0)
832a7a3177fSJung-uk Kim 		acpi_set_powerstate(child, ACPI_STATE_D3);
83396cf0b6dSWarner Losh #else
83496cf0b6dSWarner Losh 	    device_probe_and_attach(child);
83596cf0b6dSWarner Losh #endif
83610ce62b9SNate Lawson 	}
83710ce62b9SNate Lawson     }
83810ce62b9SNate Lawson     free(devlist, M_TEMP);
83910ce62b9SNate Lawson }
84010ce62b9SNate Lawson 
84163600cc3SNate Lawson /* Location hint for devctl(8) */
84263600cc3SNate Lawson static int
843247648afSTakanori Watanabe acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
844247648afSTakanori Watanabe     size_t buflen)
845247648afSTakanori Watanabe {
846247648afSTakanori Watanabe     struct acpi_device *dinfo = device_get_ivars(child);
847247648afSTakanori Watanabe 
848247648afSTakanori Watanabe     if (dinfo->ad_handle)
849d40c0f53SNate Lawson 	snprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
850247648afSTakanori Watanabe     else
851d40c0f53SNate Lawson 	snprintf(buf, buflen, "unknown");
852247648afSTakanori Watanabe     return (0);
853247648afSTakanori Watanabe }
854247648afSTakanori Watanabe 
85563600cc3SNate Lawson /* PnP information for devctl(8) */
85663600cc3SNate Lawson static int
857247648afSTakanori Watanabe acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
858247648afSTakanori Watanabe     size_t buflen)
859247648afSTakanori Watanabe {
86063600cc3SNate Lawson     struct acpi_device *dinfo = device_get_ivars(child);
86192488a57SJung-uk Kim     ACPI_DEVICE_INFO *adinfo;
862247648afSTakanori Watanabe 
86392488a57SJung-uk Kim     if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo))) {
864d40c0f53SNate Lawson 	snprintf(buf, buflen, "unknown");
86592488a57SJung-uk Kim 	return (0);
86692488a57SJung-uk Kim     }
86792488a57SJung-uk Kim 
868247648afSTakanori Watanabe     snprintf(buf, buflen, "_HID=%s _UID=%lu",
869247648afSTakanori Watanabe 	(adinfo->Valid & ACPI_VALID_HID) ?
87092488a57SJung-uk Kim 	adinfo->HardwareId.String : "none",
87163600cc3SNate Lawson 	(adinfo->Valid & ACPI_VALID_UID) ?
87292488a57SJung-uk Kim 	strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL);
873247648afSTakanori Watanabe     AcpiOsFree(adinfo);
874247648afSTakanori Watanabe 
875247648afSTakanori Watanabe     return (0);
876247648afSTakanori Watanabe }
877247648afSTakanori Watanabe 
878247648afSTakanori Watanabe /*
87915e32d5dSMike Smith  * Handle per-device ivars
88015e32d5dSMike Smith  */
88115e32d5dSMike Smith static int
88215e32d5dSMike Smith acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
88315e32d5dSMike Smith {
88415e32d5dSMike Smith     struct acpi_device	*ad;
88515e32d5dSMike Smith 
88615e32d5dSMike Smith     if ((ad = device_get_ivars(child)) == NULL) {
8872d0c82e8SJung-uk Kim 	device_printf(child, "device has no ivars\n");
88815e32d5dSMike Smith 	return (ENOENT);
88915e32d5dSMike Smith     }
89015e32d5dSMike Smith 
891be2b1797SNate Lawson     /* ACPI and ISA compatibility ivars */
89215e32d5dSMike Smith     switch(index) {
89315e32d5dSMike Smith     case ACPI_IVAR_HANDLE:
89415e32d5dSMike Smith 	*(ACPI_HANDLE *)result = ad->ad_handle;
89515e32d5dSMike Smith 	break;
89615e32d5dSMike Smith     case ACPI_IVAR_PRIVATE:
89715e32d5dSMike Smith 	*(void **)result = ad->ad_private;
89815e32d5dSMike Smith 	break;
899d4b9ff91SNate Lawson     case ACPI_IVAR_FLAGS:
900d4b9ff91SNate Lawson 	*(int *)result = ad->ad_flags;
901d4b9ff91SNate Lawson 	break;
90232d18aa5SMike Smith     case ISA_IVAR_VENDORID:
90332d18aa5SMike Smith     case ISA_IVAR_SERIAL:
90432d18aa5SMike Smith     case ISA_IVAR_COMPATID:
90532d18aa5SMike Smith 	*(int *)result = -1;
90632d18aa5SMike Smith 	break;
90732d18aa5SMike Smith     case ISA_IVAR_LOGICALID:
90832d18aa5SMike Smith 	*(int *)result = acpi_isa_get_logicalid(child);
90932d18aa5SMike Smith 	break;
91015e32d5dSMike Smith     default:
91115e32d5dSMike Smith 	return (ENOENT);
91215e32d5dSMike Smith     }
913be2b1797SNate Lawson 
91415e32d5dSMike Smith     return (0);
91515e32d5dSMike Smith }
91615e32d5dSMike Smith 
91715e32d5dSMike Smith static int
91815e32d5dSMike Smith acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
91915e32d5dSMike Smith {
92015e32d5dSMike Smith     struct acpi_device	*ad;
92115e32d5dSMike Smith 
92215e32d5dSMike Smith     if ((ad = device_get_ivars(child)) == NULL) {
9232d0c82e8SJung-uk Kim 	device_printf(child, "device has no ivars\n");
92415e32d5dSMike Smith 	return (ENOENT);
92515e32d5dSMike Smith     }
92615e32d5dSMike Smith 
92715e32d5dSMike Smith     switch(index) {
92815e32d5dSMike Smith     case ACPI_IVAR_HANDLE:
92915e32d5dSMike Smith 	ad->ad_handle = (ACPI_HANDLE)value;
93015e32d5dSMike Smith 	break;
93115e32d5dSMike Smith     case ACPI_IVAR_PRIVATE:
93215e32d5dSMike Smith 	ad->ad_private = (void *)value;
93315e32d5dSMike Smith 	break;
934d4b9ff91SNate Lawson     case ACPI_IVAR_FLAGS:
935d4b9ff91SNate Lawson 	ad->ad_flags = (int)value;
936d4b9ff91SNate Lawson 	break;
93715e32d5dSMike Smith     default:
9382ab060eeSWarner Losh 	panic("bad ivar write request (%d)", index);
93915e32d5dSMike Smith 	return (ENOENT);
94015e32d5dSMike Smith     }
941be2b1797SNate Lawson 
94215e32d5dSMike Smith     return (0);
94315e32d5dSMike Smith }
94415e32d5dSMike Smith 
94515e32d5dSMike Smith /*
94615e32d5dSMike Smith  * Handle child resource allocation/removal
94715e32d5dSMike Smith  */
94891233413SNate Lawson static struct resource_list *
94991233413SNate Lawson acpi_get_rlist(device_t dev, device_t child)
95015e32d5dSMike Smith {
95191233413SNate Lawson     struct acpi_device		*ad;
95215e32d5dSMike Smith 
95391233413SNate Lawson     ad = device_get_ivars(child);
95491233413SNate Lawson     return (&ad->ad_rl);
95515e32d5dSMike Smith }
95615e32d5dSMike Smith 
9570d484d24SJohn Baldwin static int
9580d484d24SJohn Baldwin acpi_match_resource_hint(device_t dev, int type, long value)
9590d484d24SJohn Baldwin {
9600d484d24SJohn Baldwin     struct acpi_device *ad = device_get_ivars(dev);
9610d484d24SJohn Baldwin     struct resource_list *rl = &ad->ad_rl;
9620d484d24SJohn Baldwin     struct resource_list_entry *rle;
9630d484d24SJohn Baldwin 
9640d484d24SJohn Baldwin     STAILQ_FOREACH(rle, rl, link) {
9650d484d24SJohn Baldwin 	if (rle->type != type)
9660d484d24SJohn Baldwin 	    continue;
9670d484d24SJohn Baldwin 	if (rle->start <= value && rle->end >= value)
9680d484d24SJohn Baldwin 	    return (1);
9690d484d24SJohn Baldwin     }
9700d484d24SJohn Baldwin     return (0);
9710d484d24SJohn Baldwin }
9720d484d24SJohn Baldwin 
9730d484d24SJohn Baldwin /*
9740d484d24SJohn Baldwin  * Wire device unit numbers based on resource matches in hints.
9750d484d24SJohn Baldwin  */
9760d484d24SJohn Baldwin static void
9770d484d24SJohn Baldwin acpi_hint_device_unit(device_t acdev, device_t child, const char *name,
9780d484d24SJohn Baldwin     int *unitp)
9790d484d24SJohn Baldwin {
9800d484d24SJohn Baldwin     const char *s;
9810d484d24SJohn Baldwin     long value;
9820d484d24SJohn Baldwin     int line, matches, unit;
9830d484d24SJohn Baldwin 
9840d484d24SJohn Baldwin     /*
9850d484d24SJohn Baldwin      * Iterate over all the hints for the devices with the specified
9860d484d24SJohn Baldwin      * name to see if one's resources are a subset of this device.
9870d484d24SJohn Baldwin      */
9880d484d24SJohn Baldwin     line = 0;
9890d484d24SJohn Baldwin     for (;;) {
9900d484d24SJohn Baldwin 	if (resource_find_dev(&line, name, &unit, "at", NULL) != 0)
9910d484d24SJohn Baldwin 	    break;
9920d484d24SJohn Baldwin 
9930d484d24SJohn Baldwin 	/* Must have an "at" for acpi or isa. */
9940d484d24SJohn Baldwin 	resource_string_value(name, unit, "at", &s);
9950d484d24SJohn Baldwin 	if (!(strcmp(s, "acpi0") == 0 || strcmp(s, "acpi") == 0 ||
9960d484d24SJohn Baldwin 	    strcmp(s, "isa0") == 0 || strcmp(s, "isa") == 0))
9970d484d24SJohn Baldwin 	    continue;
9980d484d24SJohn Baldwin 
9990d484d24SJohn Baldwin 	/*
10002fcd493cSJohn Baldwin 	 * Check for matching resources.  We must have at least one match.
10012fcd493cSJohn Baldwin 	 * Since I/O and memory resources cannot be shared, if we get a
10022fcd493cSJohn Baldwin 	 * match on either of those, ignore any mismatches in IRQs or DRQs.
10030d484d24SJohn Baldwin 	 *
10040d484d24SJohn Baldwin 	 * XXX: We may want to revisit this to be more lenient and wire
10050d484d24SJohn Baldwin 	 * as long as it gets one match.
10060d484d24SJohn Baldwin 	 */
10070d484d24SJohn Baldwin 	matches = 0;
10080d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "port", &value) == 0) {
10092fcd493cSJohn Baldwin 	    /*
10102fcd493cSJohn Baldwin 	     * Floppy drive controllers are notorious for having a
10112fcd493cSJohn Baldwin 	     * wide variety of resources not all of which include the
10122fcd493cSJohn Baldwin 	     * first port that is specified by the hint (typically
10132fcd493cSJohn Baldwin 	     * 0x3f0) (see the comment above fdc_isa_alloc_resources()
10142fcd493cSJohn Baldwin 	     * in fdc_isa.c).  However, they do all seem to include
10152fcd493cSJohn Baldwin 	     * port + 2 (e.g. 0x3f2) so for a floppy device, look for
10162fcd493cSJohn Baldwin 	     * 'value + 2' in the port resources instead of the hint
10172fcd493cSJohn Baldwin 	     * value.
10182fcd493cSJohn Baldwin 	     */
10192fcd493cSJohn Baldwin 	    if (strcmp(name, "fdc") == 0)
10202fcd493cSJohn Baldwin 		value += 2;
10210d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value))
10220d484d24SJohn Baldwin 		matches++;
10230d484d24SJohn Baldwin 	    else
10240d484d24SJohn Baldwin 		continue;
10250d484d24SJohn Baldwin 	}
10260d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "maddr", &value) == 0) {
10270d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_MEMORY, value))
10280d484d24SJohn Baldwin 		matches++;
10290d484d24SJohn Baldwin 	    else
10300d484d24SJohn Baldwin 		continue;
10310d484d24SJohn Baldwin 	}
10322fcd493cSJohn Baldwin 	if (matches > 0)
10332fcd493cSJohn Baldwin 	    goto matched;
10340d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "irq", &value) == 0) {
10350d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_IRQ, value))
10360d484d24SJohn Baldwin 		matches++;
10370d484d24SJohn Baldwin 	    else
10380d484d24SJohn Baldwin 		continue;
10390d484d24SJohn Baldwin 	}
10400d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "drq", &value) == 0) {
10410d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_DRQ, value))
10420d484d24SJohn Baldwin 		matches++;
10430d484d24SJohn Baldwin 	    else
10440d484d24SJohn Baldwin 		continue;
10450d484d24SJohn Baldwin 	}
10460d484d24SJohn Baldwin 
10472fcd493cSJohn Baldwin     matched:
10480d484d24SJohn Baldwin 	if (matches > 0) {
10490d484d24SJohn Baldwin 	    /* We have a winner! */
10500d484d24SJohn Baldwin 	    *unitp = unit;
10510d484d24SJohn Baldwin 	    break;
10520d484d24SJohn Baldwin 	}
10530d484d24SJohn Baldwin     }
10540d484d24SJohn Baldwin }
10550d484d24SJohn Baldwin 
1056adad4744SNate Lawson /*
1057adad4744SNate Lawson  * Pre-allocate/manage all memory and IO resources.  Since rman can't handle
1058adad4744SNate Lawson  * duplicates, we merge any in the sysresource attach routine.
1059adad4744SNate Lawson  */
1060adad4744SNate Lawson static int
1061adad4744SNate Lawson acpi_sysres_alloc(device_t dev)
1062adad4744SNate Lawson {
1063adad4744SNate Lawson     struct resource *res;
1064adad4744SNate Lawson     struct resource_list *rl;
1065adad4744SNate Lawson     struct resource_list_entry *rle;
1066adad4744SNate Lawson     struct rman *rm;
1067da72d149SNate Lawson     char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1068da72d149SNate Lawson     device_t *children;
1069da72d149SNate Lawson     int child_count, i;
1070da72d149SNate Lawson 
1071da72d149SNate Lawson     /*
1072da72d149SNate Lawson      * Probe/attach any sysresource devices.  This would be unnecessary if we
1073da72d149SNate Lawson      * had multi-pass probe/attach.
1074da72d149SNate Lawson      */
1075da72d149SNate Lawson     if (device_get_children(dev, &children, &child_count) != 0)
1076da72d149SNate Lawson 	return (ENXIO);
1077da72d149SNate Lawson     for (i = 0; i < child_count; i++) {
1078da72d149SNate Lawson 	if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1079da72d149SNate Lawson 	    device_probe_and_attach(children[i]);
1080da72d149SNate Lawson     }
1081da72d149SNate Lawson     free(children, M_TEMP);
1082adad4744SNate Lawson 
1083adad4744SNate Lawson     rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
1084be1bf4d2SPoul-Henning Kamp     STAILQ_FOREACH(rle, rl, link) {
1085adad4744SNate Lawson 	if (rle->res != NULL) {
1086adad4744SNate Lawson 	    device_printf(dev, "duplicate resource for %lx\n", rle->start);
1087adad4744SNate Lawson 	    continue;
1088adad4744SNate Lawson 	}
1089adad4744SNate Lawson 
1090adad4744SNate Lawson 	/* Only memory and IO resources are valid here. */
1091adad4744SNate Lawson 	switch (rle->type) {
1092adad4744SNate Lawson 	case SYS_RES_IOPORT:
1093adad4744SNate Lawson 	    rm = &acpi_rman_io;
1094adad4744SNate Lawson 	    break;
1095adad4744SNate Lawson 	case SYS_RES_MEMORY:
1096adad4744SNate Lawson 	    rm = &acpi_rman_mem;
1097adad4744SNate Lawson 	    break;
1098adad4744SNate Lawson 	default:
1099adad4744SNate Lawson 	    continue;
1100adad4744SNate Lawson 	}
1101adad4744SNate Lawson 
1102adad4744SNate Lawson 	/* Pre-allocate resource and add to our rman pool. */
1103adad4744SNate Lawson 	res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1104adad4744SNate Lawson 	    &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
1105adad4744SNate Lawson 	if (res != NULL) {
1106adad4744SNate Lawson 	    rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1107adad4744SNate Lawson 	    rle->res = res;
1108adad4744SNate Lawson 	} else
1109adad4744SNate Lawson 	    device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1110adad4744SNate Lawson 		rle->start, rle->count, rle->type);
1111adad4744SNate Lawson     }
1112adad4744SNate Lawson     return (0);
1113adad4744SNate Lawson }
1114adad4744SNate Lawson 
1115ea233199SJohn Baldwin static char *pcilink_ids[] = { "PNP0C0F", NULL };
1116ea233199SJohn Baldwin static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1117ea233199SJohn Baldwin 
1118ea233199SJohn Baldwin /*
1119ea233199SJohn Baldwin  * Reserve declared resources for devices found during attach once system
1120ea233199SJohn Baldwin  * resources have been allocated.
1121ea233199SJohn Baldwin  */
1122ea233199SJohn Baldwin static void
1123ea233199SJohn Baldwin acpi_reserve_resources(device_t dev)
1124ea233199SJohn Baldwin {
1125ea233199SJohn Baldwin     struct resource_list_entry *rle;
1126ea233199SJohn Baldwin     struct resource_list *rl;
1127ea233199SJohn Baldwin     struct acpi_device *ad;
1128ea233199SJohn Baldwin     struct acpi_softc *sc;
1129ea233199SJohn Baldwin     device_t *children;
1130ea233199SJohn Baldwin     int child_count, i;
1131ea233199SJohn Baldwin 
1132ea233199SJohn Baldwin     sc = device_get_softc(dev);
1133ea233199SJohn Baldwin     if (device_get_children(dev, &children, &child_count) != 0)
1134ea233199SJohn Baldwin 	return;
1135ea233199SJohn Baldwin     for (i = 0; i < child_count; i++) {
1136ea233199SJohn Baldwin 	ad = device_get_ivars(children[i]);
1137ea233199SJohn Baldwin 	rl = &ad->ad_rl;
1138ea233199SJohn Baldwin 
1139ea233199SJohn Baldwin 	/* Don't reserve system resources. */
1140ea233199SJohn Baldwin 	if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1141ea233199SJohn Baldwin 	    continue;
1142ea233199SJohn Baldwin 
1143ea233199SJohn Baldwin 	STAILQ_FOREACH(rle, rl, link) {
1144ea233199SJohn Baldwin 	    /*
1145ea233199SJohn Baldwin 	     * Don't reserve IRQ resources.  There are many sticky things
1146ea233199SJohn Baldwin 	     * to get right otherwise (e.g. IRQs for psm, atkbd, and HPET
1147ea233199SJohn Baldwin 	     * when using legacy routing).
1148ea233199SJohn Baldwin 	     */
1149ea233199SJohn Baldwin 	    if (rle->type == SYS_RES_IRQ)
1150ea233199SJohn Baldwin 		continue;
1151ea233199SJohn Baldwin 
1152ea233199SJohn Baldwin 	    /*
1153*0d81cf12SJohn Baldwin 	     * Don't reserve the resource if it is already allocated.
1154*0d81cf12SJohn Baldwin 	     * The acpi_ec(4) driver can allocate its resources early
1155*0d81cf12SJohn Baldwin 	     * if ECDT is present.
1156*0d81cf12SJohn Baldwin 	     */
1157*0d81cf12SJohn Baldwin 	    if (rle->res != NULL)
1158*0d81cf12SJohn Baldwin 		continue;
1159*0d81cf12SJohn Baldwin 
1160*0d81cf12SJohn Baldwin 	    /*
1161ea233199SJohn Baldwin 	     * Try to reserve the resource from our parent.  If this
1162ea233199SJohn Baldwin 	     * fails because the resource is a system resource, just
1163ea233199SJohn Baldwin 	     * let it be.  The resource range is already reserved so
1164ea233199SJohn Baldwin 	     * that other devices will not use it.  If the driver
1165ea233199SJohn Baldwin 	     * needs to allocate the resource, then
1166ea233199SJohn Baldwin 	     * acpi_alloc_resource() will sub-alloc from the system
1167ea233199SJohn Baldwin 	     * resource.
1168ea233199SJohn Baldwin 	     */
1169ea233199SJohn Baldwin 	    resource_list_reserve(rl, dev, children[i], rle->type, &rle->rid,
1170ea233199SJohn Baldwin 		rle->start, rle->end, rle->count, 0);
1171ea233199SJohn Baldwin 	}
1172ea233199SJohn Baldwin     }
1173ea233199SJohn Baldwin     free(children, M_TEMP);
1174ea233199SJohn Baldwin     sc->acpi_resources_reserved = 1;
1175ea233199SJohn Baldwin }
1176ea233199SJohn Baldwin 
1177ea233199SJohn Baldwin static int
1178ea233199SJohn Baldwin acpi_set_resource(device_t dev, device_t child, int type, int rid,
1179ea233199SJohn Baldwin     u_long start, u_long count)
1180ea233199SJohn Baldwin {
1181ea233199SJohn Baldwin     struct acpi_softc *sc = device_get_softc(dev);
1182ea233199SJohn Baldwin     struct acpi_device *ad = device_get_ivars(child);
1183ea233199SJohn Baldwin     struct resource_list *rl = &ad->ad_rl;
1184ea233199SJohn Baldwin     u_long end;
1185ea233199SJohn Baldwin 
1186ea233199SJohn Baldwin     /* Ignore IRQ resources for PCI link devices. */
1187ea233199SJohn Baldwin     if (type == SYS_RES_IRQ && ACPI_ID_PROBE(dev, child, pcilink_ids) != NULL)
1188ea233199SJohn Baldwin 	return (0);
1189ea233199SJohn Baldwin 
1190ea233199SJohn Baldwin     /* If the resource is already allocated, fail. */
1191ea233199SJohn Baldwin     if (resource_list_busy(rl, type, rid))
1192ea233199SJohn Baldwin 	return (EBUSY);
1193ea233199SJohn Baldwin 
1194ea233199SJohn Baldwin     /* If the resource is already reserved, release it. */
1195ea233199SJohn Baldwin     if (resource_list_reserved(rl, type, rid))
1196ea233199SJohn Baldwin 	resource_list_unreserve(rl, dev, child, type, rid);
1197ea233199SJohn Baldwin 
1198ea233199SJohn Baldwin     /* Add the resource. */
1199ea233199SJohn Baldwin     end = (start + count - 1);
1200ea233199SJohn Baldwin     resource_list_add(rl, type, rid, start, end, count);
1201ea233199SJohn Baldwin 
1202ea233199SJohn Baldwin     /* Don't reserve resources until the system resources are allocated. */
1203ea233199SJohn Baldwin     if (!sc->acpi_resources_reserved)
1204ea233199SJohn Baldwin 	return (0);
1205ea233199SJohn Baldwin 
1206ea233199SJohn Baldwin     /* Don't reserve system resources. */
1207ea233199SJohn Baldwin     if (ACPI_ID_PROBE(dev, child, sysres_ids) != NULL)
1208ea233199SJohn Baldwin 	return (0);
1209ea233199SJohn Baldwin 
1210ea233199SJohn Baldwin     /*
1211ea233199SJohn Baldwin      * Don't reserve IRQ resources.  There are many sticky things to
1212ea233199SJohn Baldwin      * get right otherwise (e.g. IRQs for psm, atkbd, and HPET when
1213ea233199SJohn Baldwin      * using legacy routing).
1214ea233199SJohn Baldwin      */
1215ea233199SJohn Baldwin     if (type == SYS_RES_IRQ)
1216ea233199SJohn Baldwin 	return (0);
1217ea233199SJohn Baldwin 
1218ea233199SJohn Baldwin     /*
1219ea233199SJohn Baldwin      * Reserve the resource.
1220ea233199SJohn Baldwin      *
1221ea233199SJohn Baldwin      * XXX: Ignores failure for now.  Failure here is probably a
1222ea233199SJohn Baldwin      * BIOS/firmware bug?
1223ea233199SJohn Baldwin      */
1224ea233199SJohn Baldwin     resource_list_reserve(rl, dev, child, type, &rid, start, end, count, 0);
1225ea233199SJohn Baldwin     return (0);
1226ea233199SJohn Baldwin }
1227ea233199SJohn Baldwin 
122815e32d5dSMike Smith static struct resource *
122915e32d5dSMike Smith acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
123015e32d5dSMike Smith     u_long start, u_long end, u_long count, u_int flags)
123115e32d5dSMike Smith {
123295957f62SJohn Baldwin     ACPI_RESOURCE ares;
1233ea233199SJohn Baldwin     struct acpi_device *ad;
123491233413SNate Lawson     struct resource_list_entry *rle;
1235ea233199SJohn Baldwin     struct resource_list *rl;
123691233413SNate Lawson     struct resource *res;
123791233413SNate Lawson     struct rman *rm;
1238ea233199SJohn Baldwin     int isdefault = (start == 0UL && end == ~0UL);
123915e2f34fSNate Lawson 
124091233413SNate Lawson     /*
1241ea233199SJohn Baldwin      * First attempt at allocating the resource.  For direct children,
1242ea233199SJohn Baldwin      * use resource_list_alloc() to handle reserved resources.  For
1243ea233199SJohn Baldwin      * other dveices, pass the request up to our parent.
124491233413SNate Lawson      */
1245ea233199SJohn Baldwin     if (bus == device_get_parent(child)) {
1246ea233199SJohn Baldwin 	ad = device_get_ivars(child);
1247ea233199SJohn Baldwin 	rl = &ad->ad_rl;
124891233413SNate Lawson 
1249397c30a8SJohn Baldwin 	/*
1250ea233199SJohn Baldwin 	 * Simulate the behavior of the ISA bus for direct children
1251ea233199SJohn Baldwin 	 * devices.  That is, if a non-default range is specified for
1252ea233199SJohn Baldwin 	 * a resource that doesn't exist, use bus_set_resource() to
1253ea233199SJohn Baldwin 	 * add the resource before allocating it.  Note that these
1254ea233199SJohn Baldwin 	 * resources will not be reserved.
1255397c30a8SJohn Baldwin 	 */
1256ea233199SJohn Baldwin 	if (!isdefault && resource_list_find(rl, type, *rid) == NULL)
1257ea233199SJohn Baldwin 		resource_list_add(rl, type, *rid, start, end, count);
1258ea233199SJohn Baldwin 	res = resource_list_alloc(rl, bus, child, type, rid, start, end, count,
1259ea233199SJohn Baldwin 	    flags);
1260ea233199SJohn Baldwin 	if (res != NULL && type == SYS_RES_IRQ) {
126195957f62SJohn Baldwin 	    /*
126295957f62SJohn Baldwin 	     * Since bus_config_intr() takes immediate effect, we cannot
126395957f62SJohn Baldwin 	     * configure the interrupt associated with a device when we
126495957f62SJohn Baldwin 	     * parse the resources but have to defer it until a driver
126595957f62SJohn Baldwin 	     * actually allocates the interrupt via bus_alloc_resource().
126695957f62SJohn Baldwin 	     *
126795957f62SJohn Baldwin 	     * XXX: Should we handle the lookup failing?
126895957f62SJohn Baldwin 	     */
126995957f62SJohn Baldwin 	    if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
127095957f62SJohn Baldwin 		acpi_config_intr(child, &ares);
127195957f62SJohn Baldwin 	}
127215e2f34fSNate Lawson 
1273ea233199SJohn Baldwin 	/*
1274ea233199SJohn Baldwin 	 * If this is an allocation of the "default" range for a given
1275ea233199SJohn Baldwin 	 * RID, fetch the exact bounds for this resource from the
1276ea233199SJohn Baldwin 	 * resource list entry to try to allocate the range from the
1277ea233199SJohn Baldwin 	 * system resource regions.
1278ea233199SJohn Baldwin 	 */
1279ea233199SJohn Baldwin 	if (res == NULL && isdefault) {
1280ea233199SJohn Baldwin 	    rle = resource_list_find(rl, type, *rid);
1281ea233199SJohn Baldwin 	    if (rle != NULL) {
1282ea233199SJohn Baldwin 		start = rle->start;
1283ea233199SJohn Baldwin 		end = rle->end;
1284ea233199SJohn Baldwin 		count = rle->count;
1285ea233199SJohn Baldwin 	    }
1286ea233199SJohn Baldwin 	}
1287ea233199SJohn Baldwin     } else
1288ea233199SJohn Baldwin 	res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1289ea233199SJohn Baldwin 	    start, end, count, flags);
1290ea233199SJohn Baldwin     if (res != NULL || start + count - 1 != end)
1291ea233199SJohn Baldwin 	return (res);
1292ea233199SJohn Baldwin 
1293ea233199SJohn Baldwin     /*
1294ea233199SJohn Baldwin      * If the first attempt failed and this is an allocation of a
1295ea233199SJohn Baldwin      * specific range, try to satisfy the request via a suballocation
1296ea233199SJohn Baldwin      * from our system resource regions.  Note that we only handle
1297ea233199SJohn Baldwin      * memory and I/O port system resources.
1298ea233199SJohn Baldwin      */
1299ea233199SJohn Baldwin     switch (type) {
1300ea233199SJohn Baldwin     case SYS_RES_IOPORT:
1301ea233199SJohn Baldwin 	rm = &acpi_rman_io;
1302ea233199SJohn Baldwin 	break;
1303ea233199SJohn Baldwin     case SYS_RES_MEMORY:
1304ea233199SJohn Baldwin 	rm = &acpi_rman_mem;
1305ea233199SJohn Baldwin 	break;
1306ea233199SJohn Baldwin     default:
1307ea233199SJohn Baldwin 	return (NULL);
1308ea233199SJohn Baldwin     }
1309ea233199SJohn Baldwin 
1310ea233199SJohn Baldwin     res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1311ea233199SJohn Baldwin 	child);
1312ea233199SJohn Baldwin     if (res == NULL)
1313ea233199SJohn Baldwin 	return (NULL);
1314ea233199SJohn Baldwin 
1315ea233199SJohn Baldwin     rman_set_rid(res, *rid);
1316ea233199SJohn Baldwin 
1317ea233199SJohn Baldwin     /* If requested, activate the resource using the parent's method. */
1318ea233199SJohn Baldwin     if (flags & RF_ACTIVE)
1319ea233199SJohn Baldwin 	if (bus_activate_resource(child, type, *rid, res) != 0) {
1320ea233199SJohn Baldwin 	    rman_release_resource(res);
1321ea233199SJohn Baldwin 	    return (NULL);
1322ea233199SJohn Baldwin 	}
1323ea233199SJohn Baldwin 
132491233413SNate Lawson     return (res);
132515e32d5dSMike Smith }
132615e32d5dSMike Smith 
132715e32d5dSMike Smith static int
132891233413SNate Lawson acpi_release_resource(device_t bus, device_t child, int type, int rid,
132991233413SNate Lawson     struct resource *r)
133015e32d5dSMike Smith {
1331397c30a8SJohn Baldwin     struct rman *rm;
133291233413SNate Lawson     int ret;
133315e32d5dSMike Smith 
1334397c30a8SJohn Baldwin     /* We only handle memory and IO resources through rman. */
1335397c30a8SJohn Baldwin     switch (type) {
1336397c30a8SJohn Baldwin     case SYS_RES_IOPORT:
1337397c30a8SJohn Baldwin 	rm = &acpi_rman_io;
1338397c30a8SJohn Baldwin 	break;
1339397c30a8SJohn Baldwin     case SYS_RES_MEMORY:
1340397c30a8SJohn Baldwin 	rm = &acpi_rman_mem;
1341397c30a8SJohn Baldwin 	break;
1342397c30a8SJohn Baldwin     default:
1343397c30a8SJohn Baldwin 	rm = NULL;
1344397c30a8SJohn Baldwin     }
1345397c30a8SJohn Baldwin 
134691233413SNate Lawson     /*
1347397c30a8SJohn Baldwin      * If this resource belongs to one of our internal managers,
1348ea233199SJohn Baldwin      * deactivate it and release it to the local pool.
134991233413SNate Lawson      */
1350397c30a8SJohn Baldwin     if (rm != NULL && rman_is_region_manager(r, rm)) {
135191233413SNate Lawson 	if (rman_get_flags(r) & RF_ACTIVE) {
135291233413SNate Lawson 	    ret = bus_deactivate_resource(child, type, rid, r);
135391233413SNate Lawson 	    if (ret != 0)
135491233413SNate Lawson 		return (ret);
135515e32d5dSMike Smith 	}
1356ea233199SJohn Baldwin 	return (rman_release_resource(r));
1357ea233199SJohn Baldwin     }
1358ea233199SJohn Baldwin 
1359ea233199SJohn Baldwin     return (bus_generic_rl_release_resource(bus, child, type, rid, r));
1360ea233199SJohn Baldwin }
136115e32d5dSMike Smith 
13628b28b622SNate Lawson static void
13638b28b622SNate Lawson acpi_delete_resource(device_t bus, device_t child, int type, int rid)
13648b28b622SNate Lawson {
13658b28b622SNate Lawson     struct resource_list *rl;
13668b28b622SNate Lawson 
13678b28b622SNate Lawson     rl = acpi_get_rlist(bus, child);
1368ea233199SJohn Baldwin     if (resource_list_busy(rl, type, rid)) {
1369ea233199SJohn Baldwin 	device_printf(bus, "delete_resource: Resource still owned by child"
1370ea233199SJohn Baldwin 	    " (type=%d, rid=%d)\n", type, rid);
1371ea233199SJohn Baldwin 	return;
1372ea233199SJohn Baldwin     }
1373ea233199SJohn Baldwin     resource_list_unreserve(rl, bus, child, type, rid);
13748b28b622SNate Lawson     resource_list_delete(rl, type, rid);
13758b28b622SNate Lawson }
13768b28b622SNate Lawson 
1377dc750869SNate Lawson /* Allocate an IO port or memory resource, given its GAS. */
1378e1c4bf3fSNate Lawson int
1379e1c4bf3fSNate Lawson acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1380907b6777SNate Lawson     struct resource **res, u_int flags)
1381dc750869SNate Lawson {
1382e1c4bf3fSNate Lawson     int error, res_type;
1383dc750869SNate Lawson 
1384e1c4bf3fSNate Lawson     error = ENOMEM;
13858f118e25SNate Lawson     if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1386e1c4bf3fSNate Lawson 	return (EINVAL);
1387dc750869SNate Lawson 
13888f118e25SNate Lawson     /* We only support memory and IO spaces. */
13892be4e471SJung-uk Kim     switch (gas->SpaceId) {
1390dc750869SNate Lawson     case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1391e1c4bf3fSNate Lawson 	res_type = SYS_RES_MEMORY;
1392dc750869SNate Lawson 	break;
1393dc750869SNate Lawson     case ACPI_ADR_SPACE_SYSTEM_IO:
1394e1c4bf3fSNate Lawson 	res_type = SYS_RES_IOPORT;
1395dc750869SNate Lawson 	break;
1396dc750869SNate Lawson     default:
1397e1c4bf3fSNate Lawson 	return (EOPNOTSUPP);
1398dc750869SNate Lawson     }
1399dc750869SNate Lawson 
14002fe912dfSNate Lawson     /*
1401f45fc848SNate Lawson      * If the register width is less than 8, assume the BIOS author means
1402f45fc848SNate Lawson      * it is a bit field and just allocate a byte.
14032fe912dfSNate Lawson      */
14042be4e471SJung-uk Kim     if (gas->BitWidth && gas->BitWidth < 8)
14052be4e471SJung-uk Kim 	gas->BitWidth = 8;
14062fe912dfSNate Lawson 
14078f118e25SNate Lawson     /* Validate the address after we're sure we support the space. */
14082be4e471SJung-uk Kim     if (gas->Address == 0 || gas->BitWidth == 0)
14098f118e25SNate Lawson 	return (EINVAL);
14108f118e25SNate Lawson 
1411e1c4bf3fSNate Lawson     bus_set_resource(dev, res_type, *rid, gas->Address,
14122be4e471SJung-uk Kim 	gas->BitWidth / 8);
1413907b6777SNate Lawson     *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1414e1c4bf3fSNate Lawson     if (*res != NULL) {
1415e1c4bf3fSNate Lawson 	*type = res_type;
1416e1c4bf3fSNate Lawson 	error = 0;
1417ca2c69c8SNate Lawson     } else
1418ca2c69c8SNate Lawson 	bus_delete_resource(dev, res_type, *rid);
1419ca2c69c8SNate Lawson 
1420e1c4bf3fSNate Lawson     return (error);
1421dc750869SNate Lawson }
1422dc750869SNate Lawson 
1423c796e27bSNate Lawson /* Probe _HID and _CID for compatible ISA PNP ids. */
14241e4925e8SNate Lawson static uint32_t
142532d18aa5SMike Smith acpi_isa_get_logicalid(device_t dev)
1426bc0f2195SMike Smith {
14271e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
1428bc0f2195SMike Smith     ACPI_HANDLE		h;
142992488a57SJung-uk Kim     uint32_t		pnpid;
143032d18aa5SMike Smith 
1431b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
143232d18aa5SMike Smith 
14336fca9360SNate Lawson     /* Fetch and validate the HID. */
143492488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
143592488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
143692488a57SJung-uk Kim 	return_VALUE (0);
143732d18aa5SMike Smith 
143892488a57SJung-uk Kim     pnpid = (devinfo->Valid & ACPI_VALID_HID) != 0 &&
143992488a57SJung-uk Kim 	devinfo->HardwareId.Length >= ACPI_EISAID_STRING_SIZE ?
144092488a57SJung-uk Kim 	PNP_EISAID(devinfo->HardwareId.String) : 0;
144192488a57SJung-uk Kim     AcpiOsFree(devinfo);
1442be2b1797SNate Lawson 
144332d18aa5SMike Smith     return_VALUE (pnpid);
144432d18aa5SMike Smith }
144532d18aa5SMike Smith 
14461e4925e8SNate Lawson static int
14471e4925e8SNate Lawson acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1448b2566207STakanori Watanabe {
14491e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
145092488a57SJung-uk Kim     ACPI_DEVICE_ID	*ids;
1451b2566207STakanori Watanabe     ACPI_HANDLE		h;
14521e4925e8SNate Lawson     uint32_t		*pnpid;
145392488a57SJung-uk Kim     int			i, valid;
1454b2566207STakanori Watanabe 
1455b2566207STakanori Watanabe     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1456b2566207STakanori Watanabe 
14571e4925e8SNate Lawson     pnpid = cids;
1458bd189fe7SNate Lawson 
14591e4925e8SNate Lawson     /* Fetch and validate the CID */
146092488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
146192488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
146292488a57SJung-uk Kim 	return_VALUE (0);
1463b2566207STakanori Watanabe 
146492488a57SJung-uk Kim     if ((devinfo->Valid & ACPI_VALID_CID) == 0) {
146592488a57SJung-uk Kim 	AcpiOsFree(devinfo);
146692488a57SJung-uk Kim 	return_VALUE (0);
1467b2566207STakanori Watanabe     }
1468b2566207STakanori Watanabe 
146992488a57SJung-uk Kim     if (devinfo->CompatibleIdList.Count < count)
147092488a57SJung-uk Kim 	count = devinfo->CompatibleIdList.Count;
147192488a57SJung-uk Kim     ids = devinfo->CompatibleIdList.Ids;
147292488a57SJung-uk Kim     for (i = 0, valid = 0; i < count; i++)
147392488a57SJung-uk Kim 	if (ids[i].Length >= ACPI_EISAID_STRING_SIZE &&
147492488a57SJung-uk Kim 	    strncmp(ids[i].String, "PNP", 3) == 0) {
147592488a57SJung-uk Kim 	    *pnpid++ = PNP_EISAID(ids[i].String);
147692488a57SJung-uk Kim 	    valid++;
147792488a57SJung-uk Kim 	}
147892488a57SJung-uk Kim     AcpiOsFree(devinfo);
147992488a57SJung-uk Kim 
14801e4925e8SNate Lawson     return_VALUE (valid);
14811e4925e8SNate Lawson }
1482b2566207STakanori Watanabe 
1483ce619b2eSNate Lawson static char *
1484ce619b2eSNate Lawson acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1485ce619b2eSNate Lawson {
1486ce619b2eSNate Lawson     ACPI_HANDLE h;
148792488a57SJung-uk Kim     ACPI_OBJECT_TYPE t;
1488ce619b2eSNate Lawson     int i;
1489ce619b2eSNate Lawson 
1490ce619b2eSNate Lawson     h = acpi_get_handle(dev);
149192488a57SJung-uk Kim     if (ids == NULL || h == NULL)
149292488a57SJung-uk Kim 	return (NULL);
149392488a57SJung-uk Kim     t = acpi_get_type(dev);
149492488a57SJung-uk Kim     if (t != ACPI_TYPE_DEVICE && t != ACPI_TYPE_PROCESSOR)
1495ce619b2eSNate Lawson 	return (NULL);
1496ce619b2eSNate Lawson 
1497ce619b2eSNate Lawson     /* Try to match one of the array of IDs with a HID or CID. */
1498ce619b2eSNate Lawson     for (i = 0; ids[i] != NULL; i++) {
1499ce619b2eSNate Lawson 	if (acpi_MatchHid(h, ids[i]))
1500ce619b2eSNate Lawson 	    return (ids[i]);
1501ce619b2eSNate Lawson     }
1502ce619b2eSNate Lawson     return (NULL);
1503ce619b2eSNate Lawson }
1504ce619b2eSNate Lawson 
1505ce619b2eSNate Lawson static ACPI_STATUS
1506ce619b2eSNate Lawson acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1507ce619b2eSNate Lawson     ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1508ce619b2eSNate Lawson {
1509ce619b2eSNate Lawson     ACPI_HANDLE h;
1510ce619b2eSNate Lawson 
1511df8d2a32SNate Lawson     if (dev == NULL)
1512df8d2a32SNate Lawson 	h = ACPI_ROOT_OBJECT;
1513df8d2a32SNate Lawson     else if ((h = acpi_get_handle(dev)) == NULL)
1514ce619b2eSNate Lawson 	return (AE_BAD_PARAMETER);
1515ce619b2eSNate Lawson     return (AcpiEvaluateObject(h, pathname, parameters, ret));
1516ce619b2eSNate Lawson }
1517ce619b2eSNate Lawson 
151862508c53SJohn Baldwin int
151910ce62b9SNate Lawson acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
152010ce62b9SNate Lawson {
152110ce62b9SNate Lawson     struct acpi_softc *sc;
152210ce62b9SNate Lawson     ACPI_HANDLE handle;
152310ce62b9SNate Lawson     ACPI_STATUS status;
152410ce62b9SNate Lawson     char sxd[8];
152510ce62b9SNate Lawson 
152610ce62b9SNate Lawson     handle = acpi_get_handle(dev);
152710ce62b9SNate Lawson 
152810ce62b9SNate Lawson     /*
152910ce62b9SNate Lawson      * XXX If we find these devices, don't try to power them down.
153010ce62b9SNate Lawson      * The serial and IRDA ports on my T23 hang the system when
153110ce62b9SNate Lawson      * set to D3 and it appears that such legacy devices may
153210ce62b9SNate Lawson      * need special handling in their drivers.
153310ce62b9SNate Lawson      */
1534a7a3177fSJung-uk Kim     if (dstate == NULL || handle == NULL ||
153510ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0500") ||
153610ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0501") ||
153710ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0502") ||
153810ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0510") ||
153910ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0511"))
154010ce62b9SNate Lawson 	return (ENXIO);
154110ce62b9SNate Lawson 
154210ce62b9SNate Lawson     /*
1543a7a3177fSJung-uk Kim      * Override next state with the value from _SxD, if present.
1544a7a3177fSJung-uk Kim      * Note illegal _S0D is evaluated because some systems expect this.
154510ce62b9SNate Lawson      */
1546a7a3177fSJung-uk Kim     sc = device_get_softc(bus);
154710ce62b9SNate Lawson     snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
154810ce62b9SNate Lawson     status = acpi_GetInteger(handle, sxd, dstate);
1549a7a3177fSJung-uk Kim     if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
1550a7a3177fSJung-uk Kim 	    device_printf(dev, "failed to get %s on %s: %s\n", sxd,
1551a7a3177fSJung-uk Kim 		acpi_name(handle), AcpiFormatException(status));
1552a7a3177fSJung-uk Kim 	    return (ENXIO);
155310ce62b9SNate Lawson     }
155410ce62b9SNate Lawson 
1555a7a3177fSJung-uk Kim     return (0);
155610ce62b9SNate Lawson }
155710ce62b9SNate Lawson 
1558df8d2a32SNate Lawson /* Callback arg for our implementation of walking the namespace. */
1559df8d2a32SNate Lawson struct acpi_device_scan_ctx {
1560df8d2a32SNate Lawson     acpi_scan_cb_t	user_fn;
1561df8d2a32SNate Lawson     void		*arg;
1562df8d2a32SNate Lawson     ACPI_HANDLE		parent;
1563df8d2a32SNate Lawson };
1564df8d2a32SNate Lawson 
1565ce619b2eSNate Lawson static ACPI_STATUS
1566df8d2a32SNate Lawson acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1567df8d2a32SNate Lawson {
1568df8d2a32SNate Lawson     struct acpi_device_scan_ctx *ctx;
1569df8d2a32SNate Lawson     device_t dev, old_dev;
1570df8d2a32SNate Lawson     ACPI_STATUS status;
1571df8d2a32SNate Lawson     ACPI_OBJECT_TYPE type;
1572df8d2a32SNate Lawson 
1573df8d2a32SNate Lawson     /*
1574df8d2a32SNate Lawson      * Skip this device if we think we'll have trouble with it or it is
1575df8d2a32SNate Lawson      * the parent where the scan began.
1576df8d2a32SNate Lawson      */
1577df8d2a32SNate Lawson     ctx = (struct acpi_device_scan_ctx *)arg;
1578df8d2a32SNate Lawson     if (acpi_avoid(h) || h == ctx->parent)
1579df8d2a32SNate Lawson 	return (AE_OK);
1580df8d2a32SNate Lawson 
1581df8d2a32SNate Lawson     /* If this is not a valid device type (e.g., a method), skip it. */
1582df8d2a32SNate Lawson     if (ACPI_FAILURE(AcpiGetType(h, &type)))
1583df8d2a32SNate Lawson 	return (AE_OK);
1584df8d2a32SNate Lawson     if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1585df8d2a32SNate Lawson 	type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1586df8d2a32SNate Lawson 	return (AE_OK);
1587df8d2a32SNate Lawson 
1588df8d2a32SNate Lawson     /*
1589df8d2a32SNate Lawson      * Call the user function with the current device.  If it is unchanged
1590df8d2a32SNate Lawson      * afterwards, return.  Otherwise, we update the handle to the new dev.
1591df8d2a32SNate Lawson      */
1592df8d2a32SNate Lawson     old_dev = acpi_get_device(h);
1593df8d2a32SNate Lawson     dev = old_dev;
1594df8d2a32SNate Lawson     status = ctx->user_fn(h, &dev, level, ctx->arg);
1595df8d2a32SNate Lawson     if (ACPI_FAILURE(status) || old_dev == dev)
1596df8d2a32SNate Lawson 	return (status);
1597df8d2a32SNate Lawson 
1598df8d2a32SNate Lawson     /* Remove the old child and its connection to the handle. */
1599df8d2a32SNate Lawson     if (old_dev != NULL) {
1600df8d2a32SNate Lawson 	device_delete_child(device_get_parent(old_dev), old_dev);
1601df8d2a32SNate Lawson 	AcpiDetachData(h, acpi_fake_objhandler);
1602df8d2a32SNate Lawson     }
1603df8d2a32SNate Lawson 
1604df8d2a32SNate Lawson     /* Recreate the handle association if the user created a device. */
1605df8d2a32SNate Lawson     if (dev != NULL)
1606df8d2a32SNate Lawson 	AcpiAttachData(h, acpi_fake_objhandler, dev);
1607df8d2a32SNate Lawson 
1608df8d2a32SNate Lawson     return (AE_OK);
1609df8d2a32SNate Lawson }
1610df8d2a32SNate Lawson 
1611df8d2a32SNate Lawson static ACPI_STATUS
1612df8d2a32SNate Lawson acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1613df8d2a32SNate Lawson     acpi_scan_cb_t user_fn, void *arg)
1614ce619b2eSNate Lawson {
1615ce619b2eSNate Lawson     ACPI_HANDLE h;
1616df8d2a32SNate Lawson     struct acpi_device_scan_ctx ctx;
1617ce619b2eSNate Lawson 
1618df8d2a32SNate Lawson     if (acpi_disabled("children"))
1619df8d2a32SNate Lawson 	return (AE_OK);
1620df8d2a32SNate Lawson 
1621df8d2a32SNate Lawson     if (dev == NULL)
1622df8d2a32SNate Lawson 	h = ACPI_ROOT_OBJECT;
1623df8d2a32SNate Lawson     else if ((h = acpi_get_handle(dev)) == NULL)
1624ce619b2eSNate Lawson 	return (AE_BAD_PARAMETER);
1625df8d2a32SNate Lawson     ctx.user_fn = user_fn;
1626df8d2a32SNate Lawson     ctx.arg = arg;
1627df8d2a32SNate Lawson     ctx.parent = h;
1628df8d2a32SNate Lawson     return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
16292272d050SJung-uk Kim 	acpi_device_scan_cb, NULL, &ctx, NULL));
1630ce619b2eSNate Lawson }
1631ce619b2eSNate Lawson 
163210ce62b9SNate Lawson /*
163310ce62b9SNate Lawson  * Even though ACPI devices are not PCI, we use the PCI approach for setting
163410ce62b9SNate Lawson  * device power states since it's close enough to ACPI.
163510ce62b9SNate Lawson  */
163610ce62b9SNate Lawson static int
1637a7a3177fSJung-uk Kim acpi_set_powerstate(device_t child, int state)
163810ce62b9SNate Lawson {
163910ce62b9SNate Lawson     ACPI_HANDLE h;
164010ce62b9SNate Lawson     ACPI_STATUS status;
164110ce62b9SNate Lawson 
164210ce62b9SNate Lawson     h = acpi_get_handle(child);
1643a0e73a12SJung-uk Kim     if (state < ACPI_STATE_D0 || state > ACPI_D_STATES_MAX)
164410ce62b9SNate Lawson 	return (EINVAL);
164510ce62b9SNate Lawson     if (h == NULL)
164610ce62b9SNate Lawson 	return (0);
164710ce62b9SNate Lawson 
164810ce62b9SNate Lawson     /* Ignore errors if the power methods aren't present. */
164910ce62b9SNate Lawson     status = acpi_pwr_switch_consumer(h, state);
1650a7a3177fSJung-uk Kim     if (ACPI_SUCCESS(status)) {
1651a7a3177fSJung-uk Kim 	if (bootverbose)
1652a7a3177fSJung-uk Kim 	    device_printf(child, "set ACPI power state D%d on %s\n",
1653a7a3177fSJung-uk Kim 		state, acpi_name(h));
1654a7a3177fSJung-uk Kim     } else if (status != AE_NOT_FOUND)
1655a7a3177fSJung-uk Kim 	device_printf(child,
1656a7a3177fSJung-uk Kim 	    "failed to set ACPI power state D%d on %s: %s\n", state,
1657a7a3177fSJung-uk Kim 	    acpi_name(h), AcpiFormatException(status));
165810ce62b9SNate Lawson 
1659a7a3177fSJung-uk Kim     return (0);
166010ce62b9SNate Lawson }
166110ce62b9SNate Lawson 
166232d18aa5SMike Smith static int
166332d18aa5SMike Smith acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
166432d18aa5SMike Smith {
16651e4925e8SNate Lawson     int			result, cid_count, i;
16661e4925e8SNate Lawson     uint32_t		lid, cids[8];
1667bc0f2195SMike Smith 
1668b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1669bc0f2195SMike Smith 
1670bc0f2195SMike Smith     /*
1671bc0f2195SMike Smith      * ISA-style drivers attached to ACPI may persist and
1672bc0f2195SMike Smith      * probe manually if we return ENOENT.  We never want
1673bc0f2195SMike Smith      * that to happen, so don't ever return it.
1674bc0f2195SMike Smith      */
1675bc0f2195SMike Smith     result = ENXIO;
1676bc0f2195SMike Smith 
1677be2b1797SNate Lawson     /* Scan the supplied IDs for a match */
1678b2566207STakanori Watanabe     lid = acpi_isa_get_logicalid(child);
16791e4925e8SNate Lawson     cid_count = acpi_isa_get_compatid(child, cids, 8);
1680bc0f2195SMike Smith     while (ids && ids->ip_id) {
16811e4925e8SNate Lawson 	if (lid == ids->ip_id) {
1682bc0f2195SMike Smith 	    result = 0;
1683bc0f2195SMike Smith 	    goto out;
1684bc0f2195SMike Smith 	}
16851e4925e8SNate Lawson 	for (i = 0; i < cid_count; i++) {
16861e4925e8SNate Lawson 	    if (cids[i] == ids->ip_id) {
16871e4925e8SNate Lawson 		result = 0;
16881e4925e8SNate Lawson 		goto out;
16891e4925e8SNate Lawson 	    }
16901e4925e8SNate Lawson 	}
1691bc0f2195SMike Smith 	ids++;
1692bc0f2195SMike Smith     }
1693be2b1797SNate Lawson 
1694bc0f2195SMike Smith  out:
16959e0dd54fSNate Lawson     if (result == 0 && ids->ip_desc)
16969e0dd54fSNate Lawson 	device_set_desc(child, ids->ip_desc);
16979e0dd54fSNate Lawson 
1698bc0f2195SMike Smith     return_VALUE (result);
1699bc0f2195SMike Smith }
1700bc0f2195SMike Smith 
1701d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
1702d320e05cSJohn Baldwin /*
1703d320e05cSJohn Baldwin  * Look for a MCFG table.  If it is present, use the settings for
1704d320e05cSJohn Baldwin  * domain (segment) 0 to setup PCI config space access via the memory
1705d320e05cSJohn Baldwin  * map.
1706d320e05cSJohn Baldwin  */
1707d320e05cSJohn Baldwin static void
1708d320e05cSJohn Baldwin acpi_enable_pcie(void)
1709d320e05cSJohn Baldwin {
1710d320e05cSJohn Baldwin 	ACPI_TABLE_HEADER *hdr;
1711d320e05cSJohn Baldwin 	ACPI_MCFG_ALLOCATION *alloc, *end;
1712d320e05cSJohn Baldwin 	ACPI_STATUS status;
1713d320e05cSJohn Baldwin 
1714d320e05cSJohn Baldwin 	status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1715d320e05cSJohn Baldwin 	if (ACPI_FAILURE(status))
1716d320e05cSJohn Baldwin 		return;
1717d320e05cSJohn Baldwin 
1718d320e05cSJohn Baldwin 	end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1719d320e05cSJohn Baldwin 	alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1720d320e05cSJohn Baldwin 	while (alloc < end) {
1721d320e05cSJohn Baldwin 		if (alloc->PciSegment == 0) {
1722d320e05cSJohn Baldwin 			pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1723d320e05cSJohn Baldwin 			    alloc->EndBusNumber);
1724d320e05cSJohn Baldwin 			return;
1725d320e05cSJohn Baldwin 		}
1726d320e05cSJohn Baldwin 		alloc++;
1727d320e05cSJohn Baldwin 	}
1728d320e05cSJohn Baldwin }
1729d320e05cSJohn Baldwin #endif
1730d320e05cSJohn Baldwin 
1731bc0f2195SMike Smith /*
173233332dc2SNate Lawson  * Scan all of the ACPI namespace and attach child devices.
173315e32d5dSMike Smith  *
173433332dc2SNate Lawson  * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
173533332dc2SNate Lawson  * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
173633332dc2SNate Lawson  * However, in violation of the spec, some systems place their PCI link
173733332dc2SNate Lawson  * devices in \, so we have to walk the whole namespace.  We check the
173833332dc2SNate Lawson  * type of namespace nodes, so this should be ok.
173915e32d5dSMike Smith  */
174015e32d5dSMike Smith static void
174115e32d5dSMike Smith acpi_probe_children(device_t bus)
174215e32d5dSMike Smith {
174315e32d5dSMike Smith 
1744b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
17450ae55423SMike Smith 
174615e32d5dSMike Smith     /*
174715e32d5dSMike Smith      * Scan the namespace and insert placeholders for all the devices that
1748edc13633SNate Lawson      * we find.  We also probe/attach any early devices.
174915e32d5dSMike Smith      *
175015e32d5dSMike Smith      * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1751be2b1797SNate Lawson      * we want to create nodes for all devices, not just those that are
1752be2b1797SNate Lawson      * currently present. (This assumes that we don't want to create/remove
1753be2b1797SNate Lawson      * devices as they appear, which might be smarter.)
175415e32d5dSMike Smith      */
17554c1cdee6SMike Smith     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
175633332dc2SNate Lawson     AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child,
17572272d050SJung-uk Kim 	NULL, bus, NULL);
175815e32d5dSMike Smith 
1759adad4744SNate Lawson     /* Pre-allocate resources for our rman from any sysresource devices. */
1760adad4744SNate Lawson     acpi_sysres_alloc(bus);
1761adad4744SNate Lawson 
1762ea233199SJohn Baldwin     /* Reserve resources already allocated to children. */
1763ea233199SJohn Baldwin     acpi_reserve_resources(bus);
1764ea233199SJohn Baldwin 
1765edc13633SNate Lawson     /* Create any static children by calling device identify methods. */
1766edc13633SNate Lawson     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1767edc13633SNate Lawson     bus_generic_probe(bus);
1768edc13633SNate Lawson 
17695e66b8e2SJohn Baldwin     /* Probe/attach all children, created statically and from the namespace. */
17700430ba9eSAndriy Gapon     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "acpi bus_generic_attach\n"));
177115e32d5dSMike Smith     bus_generic_attach(bus);
17720ae55423SMike Smith 
177388a79fc0SNate Lawson     /* Attach wake sysctls. */
17745c9ea25eSNate Lawson     acpi_wake_sysctl_walk(bus);
177588a79fc0SNate Lawson 
1776bc0f2195SMike Smith     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
17770ae55423SMike Smith     return_VOID;
177815e32d5dSMike Smith }
177915e32d5dSMike Smith 
1780b82ca9a9SNate Lawson /*
1781d227204dSJohn Baldwin  * Determine the probe order for a given device.
1782b82ca9a9SNate Lawson  */
1783d227204dSJohn Baldwin static void
1784b82ca9a9SNate Lawson acpi_probe_order(ACPI_HANDLE handle, int *order)
178591233413SNate Lawson {
1786463e0f91SJohn Baldwin     ACPI_OBJECT_TYPE type;
178791233413SNate Lawson 
1788b82ca9a9SNate Lawson     /*
1789b1f9b996SAndriy Gapon      * 1. CPUs
1790b1f9b996SAndriy Gapon      * 2. I/O port and memory system resource holders
1791b1f9b996SAndriy Gapon      * 3. Embedded controllers (to handle early accesses)
1792b1f9b996SAndriy Gapon      * 4. PCI Link Devices
1793b82ca9a9SNate Lawson      */
1794463e0f91SJohn Baldwin     AcpiGetType(handle, &type);
1795aa835160SAndriy Gapon     if (type == ACPI_TYPE_PROCESSOR)
179691233413SNate Lawson 	*order = 1;
1797aa835160SAndriy Gapon     else if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02"))
179891233413SNate Lawson 	*order = 2;
1799aa835160SAndriy Gapon     else if (acpi_MatchHid(handle, "PNP0C09"))
1800b460c6f8SJohn Baldwin 	*order = 3;
1801aa835160SAndriy Gapon     else if (acpi_MatchHid(handle, "PNP0C0F"))
1802aa835160SAndriy Gapon 	*order = 4;
180391233413SNate Lawson }
180491233413SNate Lawson 
180515e32d5dSMike Smith /*
180615e32d5dSMike Smith  * Evaluate a child device and determine whether we might attach a device to
180715e32d5dSMike Smith  * it.
180815e32d5dSMike Smith  */
180915e32d5dSMike Smith static ACPI_STATUS
181015e32d5dSMike Smith acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
181115e32d5dSMike Smith {
18125a77b11bSJung-uk Kim     struct acpi_prw_data prw;
181315e32d5dSMike Smith     ACPI_OBJECT_TYPE type;
1814858a52f4SMitsuru IWASAKI     ACPI_HANDLE h;
181533332dc2SNate Lawson     device_t bus, child;
1816495a4144SJung-uk Kim     char *handle_str;
1817da72d149SNate Lawson     int order;
181815e32d5dSMike Smith 
1819b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
18200ae55423SMike Smith 
1821495a4144SJung-uk Kim     if (acpi_disabled("children"))
1822495a4144SJung-uk Kim 	return_ACPI_STATUS (AE_OK);
1823495a4144SJung-uk Kim 
1824be2b1797SNate Lawson     /* Skip this device if we think we'll have trouble with it. */
18250ae55423SMike Smith     if (acpi_avoid(handle))
18260ae55423SMike Smith 	return_ACPI_STATUS (AE_OK);
18270ae55423SMike Smith 
182891233413SNate Lawson     bus = (device_t)context;
1829b53f2771SMike Smith     if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1830495a4144SJung-uk Kim 	handle_str = acpi_name(handle);
183115e32d5dSMike Smith 	switch (type) {
183215e32d5dSMike Smith 	case ACPI_TYPE_DEVICE:
1833495a4144SJung-uk Kim 	    /*
1834495a4144SJung-uk Kim 	     * Since we scan from \, be sure to skip system scope objects.
1835495a4144SJung-uk Kim 	     * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
1836affa1826SJung-uk Kim 	     * BIOS bugs.  For example, \_SB_ is to allow \_SB_._INI to be run
1837495a4144SJung-uk Kim 	     * during the intialization and \_TZ_ is to support Notify() on it.
1838495a4144SJung-uk Kim 	     */
1839495a4144SJung-uk Kim 	    if (strcmp(handle_str, "\\_SB_") == 0 ||
1840495a4144SJung-uk Kim 		strcmp(handle_str, "\\_TZ_") == 0)
1841495a4144SJung-uk Kim 		break;
18425a77b11bSJung-uk Kim 	    if (acpi_parse_prw(handle, &prw) == 0)
18435a77b11bSJung-uk Kim 		AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
1844495a4144SJung-uk Kim 	    /* FALLTHROUGH */
184515e32d5dSMike Smith 	case ACPI_TYPE_PROCESSOR:
184615e32d5dSMike Smith 	case ACPI_TYPE_THERMAL:
184715e32d5dSMike Smith 	case ACPI_TYPE_POWER:
184833332dc2SNate Lawson 	    /*
1849463e0f91SJohn Baldwin 	     * Create a placeholder device for this node.  Sort the
1850463e0f91SJohn Baldwin 	     * placeholder so that the probe/attach passes will run
1851463e0f91SJohn Baldwin 	     * breadth-first.  Orders less than ACPI_DEV_BASE_ORDER
1852463e0f91SJohn Baldwin 	     * are reserved for special objects (i.e., system
1853b1f9b996SAndriy Gapon 	     * resources).
185415e32d5dSMike Smith 	     */
185533332dc2SNate Lawson 	    ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1856d227204dSJohn Baldwin 	    order = level * 10 + 100;
1857da72d149SNate Lawson 	    acpi_probe_order(handle, &order);
185891233413SNate Lawson 	    child = BUS_ADD_CHILD(bus, order, NULL, -1);
1859bc0f2195SMike Smith 	    if (child == NULL)
1860bc0f2195SMike Smith 		break;
186159a890e6SNate Lawson 
186259a890e6SNate Lawson 	    /* Associate the handle with the device_t and vice versa. */
186315e32d5dSMike Smith 	    acpi_set_handle(child, handle);
186459a890e6SNate Lawson 	    AcpiAttachData(handle, acpi_fake_objhandler, child);
1865bc0f2195SMike Smith 
1866bc0f2195SMike Smith 	    /*
1867b519f9d6SMike Smith 	     * Check that the device is present.  If it's not present,
1868b519f9d6SMike Smith 	     * leave it disabled (so that we have a device_t attached to
1869b519f9d6SMike Smith 	     * the handle, but we don't probe it).
1870893f750aSNate Lawson 	     *
1871893f750aSNate Lawson 	     * XXX PCI link devices sometimes report "present" but not
1872893f750aSNate Lawson 	     * "functional" (i.e. if disabled).  Go ahead and probe them
1873893f750aSNate Lawson 	     * anyway since we may enable them later.
1874b519f9d6SMike Smith 	     */
1875858a52f4SMitsuru IWASAKI 	    if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1876858a52f4SMitsuru IWASAKI 		/* Never disable PCI link devices. */
1877858a52f4SMitsuru IWASAKI 		if (acpi_MatchHid(handle, "PNP0C0F"))
1878858a52f4SMitsuru IWASAKI 		    break;
1879858a52f4SMitsuru IWASAKI 		/*
1880858a52f4SMitsuru IWASAKI 		 * Docking stations should remain enabled since the system
1881858a52f4SMitsuru IWASAKI 		 * may be undocked at boot.
1882858a52f4SMitsuru IWASAKI 		 */
1883858a52f4SMitsuru IWASAKI 		if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
1884858a52f4SMitsuru IWASAKI 		    break;
1885858a52f4SMitsuru IWASAKI 
1886b519f9d6SMike Smith 		device_disable(child);
1887b519f9d6SMike Smith 		break;
1888b519f9d6SMike Smith 	    }
1889b519f9d6SMike Smith 
1890b519f9d6SMike Smith 	    /*
1891bc0f2195SMike Smith 	     * Get the device's resource settings and attach them.
1892bc0f2195SMike Smith 	     * Note that if the device has _PRS but no _CRS, we need
1893bc0f2195SMike Smith 	     * to decide when it's appropriate to try to configure the
1894bc0f2195SMike Smith 	     * device.  Ignore the return value here; it's OK for the
1895bc0f2195SMike Smith 	     * device not to have any resources.
1896bc0f2195SMike Smith 	     */
189772ad60adSNate Lawson 	    acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
18980ae55423SMike Smith 	    break;
189915e32d5dSMike Smith 	}
190015e32d5dSMike Smith     }
1901be2b1797SNate Lawson 
19020ae55423SMike Smith     return_ACPI_STATUS (AE_OK);
190315e32d5dSMike Smith }
190415e32d5dSMike Smith 
190559a890e6SNate Lawson /*
190659a890e6SNate Lawson  * AcpiAttachData() requires an object handler but never uses it.  This is a
190759a890e6SNate Lawson  * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
190859a890e6SNate Lawson  */
190959a890e6SNate Lawson void
191092488a57SJung-uk Kim acpi_fake_objhandler(ACPI_HANDLE h, void *data)
191159a890e6SNate Lawson {
191259a890e6SNate Lawson }
191359a890e6SNate Lawson 
191415e32d5dSMike Smith static void
191515e32d5dSMike Smith acpi_shutdown_final(void *arg, int howto)
191615e32d5dSMike Smith {
19172d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
1918d33f4987STakanori Watanabe     ACPI_STATUS status;
1919eeb3a05fSNate Lawson 
1920eeb3a05fSNate Lawson     /*
192180f0e4c2SNate Lawson      * XXX Shutdown code should only run on the BSP (cpuid 0).
192280f0e4c2SNate Lawson      * Some chipsets do not power off the system correctly if called from
192380f0e4c2SNate Lawson      * an AP.
1924eeb3a05fSNate Lawson      */
1925eeb3a05fSNate Lawson     if ((howto & RB_POWEROFF) != 0) {
1926904bf0c2SNate Lawson 	status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1927904bf0c2SNate Lawson 	if (ACPI_FAILURE(status)) {
19282d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
1929904bf0c2SNate Lawson 		AcpiFormatException(status));
1930904bf0c2SNate Lawson 	    return;
1931904bf0c2SNate Lawson 	}
19322d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev, "Powering system off\n");
193355398047SNate Lawson 	ACPI_DISABLE_IRQS();
1934865b8d0bSNate Lawson 	status = AcpiEnterSleepState(ACPI_STATE_S5);
19352d0c82e8SJung-uk Kim 	if (ACPI_FAILURE(status))
19362d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "power-off failed - %s\n",
19372d0c82e8SJung-uk Kim 		AcpiFormatException(status));
19382d0c82e8SJung-uk Kim 	else {
193915e32d5dSMike Smith 	    DELAY(1000000);
19402d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "power-off failed - timeout\n");
194115e32d5dSMike Smith 	}
1942ac731af5SJung-uk Kim     } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) {
1943d85e6785SNate Lawson 	/* Reboot using the reset register. */
1944ac731af5SJung-uk Kim 	status = AcpiReset();
1945ac731af5SJung-uk Kim 	if (ACPI_SUCCESS(status)) {
194687a500cdSNate Lawson 	    DELAY(1000000);
19472d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "reset failed - timeout\n");
1948ac731af5SJung-uk Kim 	} else if (status != AE_NOT_EXIST)
1949ac731af5SJung-uk Kim 	    device_printf(sc->acpi_dev, "reset failed - %s\n",
1950ac731af5SJung-uk Kim 		AcpiFormatException(status));
1951d85e6785SNate Lawson     } else if (sc->acpi_do_disable && panicstr == NULL) {
1952d85e6785SNate Lawson 	/*
1953d85e6785SNate Lawson 	 * Only disable ACPI if the user requested.  On some systems, writing
1954d85e6785SNate Lawson 	 * the disable value to SMI_CMD hangs the system.
1955d85e6785SNate Lawson 	 */
19562d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev, "Shutting down\n");
195780f0e4c2SNate Lawson 	AcpiTerminate();
195880f0e4c2SNate Lawson     }
195915e32d5dSMike Smith }
196015e32d5dSMike Smith 
196113d4f7baSMitsuru IWASAKI static void
196213d4f7baSMitsuru IWASAKI acpi_enable_fixed_events(struct acpi_softc *sc)
196313d4f7baSMitsuru IWASAKI {
196413d4f7baSMitsuru IWASAKI     static int	first_time = 1;
196513d4f7baSMitsuru IWASAKI 
196613d4f7baSMitsuru IWASAKI     /* Enable and clear fixed events and install handlers. */
19672be4e471SJung-uk Kim     if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
196859ddeb18SNate Lawson 	AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
196913d4f7baSMitsuru IWASAKI 	AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
197033febf93SNate Lawson 				     acpi_event_power_button_sleep, sc);
1971be2b1797SNate Lawson 	if (first_time)
19726c0e8467SNate Lawson 	    device_printf(sc->acpi_dev, "Power Button (fixed)\n");
197313d4f7baSMitsuru IWASAKI     }
19742be4e471SJung-uk Kim     if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
197559ddeb18SNate Lawson 	AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
197613d4f7baSMitsuru IWASAKI 	AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
197733febf93SNate Lawson 				     acpi_event_sleep_button_sleep, sc);
1978be2b1797SNate Lawson 	if (first_time)
19796c0e8467SNate Lawson 	    device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
198013d4f7baSMitsuru IWASAKI     }
198113d4f7baSMitsuru IWASAKI 
198213d4f7baSMitsuru IWASAKI     first_time = 0;
198313d4f7baSMitsuru IWASAKI }
198413d4f7baSMitsuru IWASAKI 
198515e32d5dSMike Smith /*
1986c5ba0be4SMike Smith  * Returns true if the device is actually present and should
1987c5ba0be4SMike Smith  * be attached to.  This requires the present, enabled, UI-visible
1988c5ba0be4SMike Smith  * and diagnostics-passed bits to be set.
1989c5ba0be4SMike Smith  */
1990c5ba0be4SMike Smith BOOLEAN
1991c5ba0be4SMike Smith acpi_DeviceIsPresent(device_t dev)
1992c5ba0be4SMike Smith {
19931e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
1994c5ba0be4SMike Smith     ACPI_HANDLE		h;
199592488a57SJung-uk Kim     BOOLEAN		present;
1996c5ba0be4SMike Smith 
199792488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
199892488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1999c5ba0be4SMike Smith 	return (FALSE);
2000be2b1797SNate Lawson 
2001be2b1797SNate Lawson     /* If no _STA method, must be present */
200292488a57SJung-uk Kim     present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
200392488a57SJung-uk Kim 	ACPI_DEVICE_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
2004be2b1797SNate Lawson 
200592488a57SJung-uk Kim     AcpiOsFree(devinfo);
200692488a57SJung-uk Kim     return (present);
2007c5ba0be4SMike Smith }
2008c5ba0be4SMike Smith 
2009c5ba0be4SMike Smith /*
2010b53f2771SMike Smith  * Returns true if the battery is actually present and inserted.
2011b53f2771SMike Smith  */
2012b53f2771SMike Smith BOOLEAN
2013b53f2771SMike Smith acpi_BatteryIsPresent(device_t dev)
2014b53f2771SMike Smith {
20151e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
2016b53f2771SMike Smith     ACPI_HANDLE		h;
201792488a57SJung-uk Kim     BOOLEAN		present;
2018b53f2771SMike Smith 
201992488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
202092488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2021b53f2771SMike Smith 	return (FALSE);
2022be2b1797SNate Lawson 
2023be2b1797SNate Lawson     /* If no _STA method, must be present */
202492488a57SJung-uk Kim     present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
202592488a57SJung-uk Kim 	ACPI_BATTERY_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
2026be2b1797SNate Lawson 
202792488a57SJung-uk Kim     AcpiOsFree(devinfo);
202892488a57SJung-uk Kim     return (present);
2029b53f2771SMike Smith }
2030b53f2771SMike Smith 
2031b53f2771SMike Smith /*
203291233413SNate Lawson  * Match a HID string against a handle
203315e32d5dSMike Smith  */
20343c4c08dcSAlexander Motin BOOLEAN
2035ce619b2eSNate Lawson acpi_MatchHid(ACPI_HANDLE h, const char *hid)
203615e32d5dSMike Smith {
20371e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
203892488a57SJung-uk Kim     BOOLEAN		ret;
203992488a57SJung-uk Kim     int			i;
204092488a57SJung-uk Kim 
204192488a57SJung-uk Kim     if (hid == NULL || h == NULL ||
204292488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
204392488a57SJung-uk Kim 	return (FALSE);
204415e32d5dSMike Smith 
20451e4925e8SNate Lawson     ret = FALSE;
2046c59c9a8eSJohn Baldwin     if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
204792488a57SJung-uk Kim 	strcmp(hid, devinfo->HardwareId.String) == 0)
20481e4925e8SNate Lawson 	    ret = TRUE;
204992488a57SJung-uk Kim     else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
205092488a57SJung-uk Kim 	for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
205192488a57SJung-uk Kim 	    if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
20521e4925e8SNate Lawson 		ret = TRUE;
20531e4925e8SNate Lawson 		break;
20541e4925e8SNate Lawson 	    }
20551e4925e8SNate Lawson 	}
2056be2b1797SNate Lawson 
205792488a57SJung-uk Kim     AcpiOsFree(devinfo);
20581e4925e8SNate Lawson     return (ret);
205915e32d5dSMike Smith }
206015e32d5dSMike Smith 
206115e32d5dSMike Smith /*
2062c5ba0be4SMike Smith  * Return the handle of a named object within our scope, ie. that of (parent)
2063c5ba0be4SMike Smith  * or one if its parents.
2064c5ba0be4SMike Smith  */
2065c5ba0be4SMike Smith ACPI_STATUS
2066c5ba0be4SMike Smith acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
2067c5ba0be4SMike Smith {
2068c5ba0be4SMike Smith     ACPI_HANDLE		r;
2069c5ba0be4SMike Smith     ACPI_STATUS		status;
2070c5ba0be4SMike Smith 
2071be2b1797SNate Lawson     /* Walk back up the tree to the root */
2072c5ba0be4SMike Smith     for (;;) {
2073be2b1797SNate Lawson 	status = AcpiGetHandle(parent, path, &r);
2074be2b1797SNate Lawson 	if (ACPI_SUCCESS(status)) {
2075c5ba0be4SMike Smith 	    *result = r;
2076c5ba0be4SMike Smith 	    return (AE_OK);
2077c5ba0be4SMike Smith 	}
2078bee4aa4aSNate Lawson 	/* XXX Return error here? */
2079c5ba0be4SMike Smith 	if (status != AE_NOT_FOUND)
2080c5ba0be4SMike Smith 	    return (AE_OK);
2081b53f2771SMike Smith 	if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
2082c5ba0be4SMike Smith 	    return (AE_NOT_FOUND);
2083c5ba0be4SMike Smith 	parent = r;
2084c5ba0be4SMike Smith     }
2085c5ba0be4SMike Smith }
2086c5ba0be4SMike Smith 
2087eea17c34SNate Lawson /* Find the difference between two PM tick counts. */
2088eea17c34SNate Lawson uint32_t
2089eea17c34SNate Lawson acpi_TimerDelta(uint32_t end, uint32_t start)
2090eea17c34SNate Lawson {
2091eea17c34SNate Lawson     uint32_t delta;
2092eea17c34SNate Lawson 
2093eea17c34SNate Lawson     if (end >= start)
2094eea17c34SNate Lawson 	delta = end - start;
20952be4e471SJung-uk Kim     else if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
2096eea17c34SNate Lawson 	delta = ((0xFFFFFFFF - start) + end + 1);
20972be4e471SJung-uk Kim     else
20982be4e471SJung-uk Kim 	delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
2099eea17c34SNate Lawson     return (delta);
2100eea17c34SNate Lawson }
2101eea17c34SNate Lawson 
2102c5ba0be4SMike Smith /*
2103c5ba0be4SMike Smith  * Allocate a buffer with a preset data size.
2104c5ba0be4SMike Smith  */
2105c5ba0be4SMike Smith ACPI_BUFFER *
2106c5ba0be4SMike Smith acpi_AllocBuffer(int size)
2107c5ba0be4SMike Smith {
2108c5ba0be4SMike Smith     ACPI_BUFFER	*buf;
2109c5ba0be4SMike Smith 
2110c5ba0be4SMike Smith     if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
2111c5ba0be4SMike Smith 	return (NULL);
2112c5ba0be4SMike Smith     buf->Length = size;
2113c5ba0be4SMike Smith     buf->Pointer = (void *)(buf + 1);
2114c5ba0be4SMike Smith     return (buf);
2115c5ba0be4SMike Smith }
2116c5ba0be4SMike Smith 
2117c310653eSNate Lawson ACPI_STATUS
2118cc58e4eeSNate Lawson acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
2119c310653eSNate Lawson {
2120c310653eSNate Lawson     ACPI_OBJECT arg1;
2121c310653eSNate Lawson     ACPI_OBJECT_LIST args;
2122c310653eSNate Lawson 
2123c310653eSNate Lawson     arg1.Type = ACPI_TYPE_INTEGER;
2124c310653eSNate Lawson     arg1.Integer.Value = number;
2125c310653eSNate Lawson     args.Count = 1;
2126c310653eSNate Lawson     args.Pointer = &arg1;
2127c310653eSNate Lawson 
2128c310653eSNate Lawson     return (AcpiEvaluateObject(handle, path, &args, NULL));
2129c310653eSNate Lawson }
2130c310653eSNate Lawson 
2131c5ba0be4SMike Smith /*
2132c5ba0be4SMike Smith  * Evaluate a path that should return an integer.
2133c5ba0be4SMike Smith  */
2134c5ba0be4SMike Smith ACPI_STATUS
2135cc58e4eeSNate Lawson acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
2136c5ba0be4SMike Smith {
2137be2b1797SNate Lawson     ACPI_STATUS	status;
2138c5ba0be4SMike Smith     ACPI_BUFFER	buf;
2139c573e654SMitsuru IWASAKI     ACPI_OBJECT	param;
2140c5ba0be4SMike Smith 
2141c5ba0be4SMike Smith     if (handle == NULL)
2142c5ba0be4SMike Smith 	handle = ACPI_ROOT_OBJECT;
21430c7da7acSJohn Baldwin 
21440c7da7acSJohn Baldwin     /*
21450c7da7acSJohn Baldwin      * Assume that what we've been pointed at is an Integer object, or
21460c7da7acSJohn Baldwin      * a method that will return an Integer.
21470c7da7acSJohn Baldwin      */
2148c5ba0be4SMike Smith     buf.Pointer = &param;
2149c5ba0be4SMike Smith     buf.Length = sizeof(param);
2150be2b1797SNate Lawson     status = AcpiEvaluateObject(handle, path, NULL, &buf);
2151be2b1797SNate Lawson     if (ACPI_SUCCESS(status)) {
2152be2b1797SNate Lawson 	if (param.Type == ACPI_TYPE_INTEGER)
2153c5ba0be4SMike Smith 	    *number = param.Integer.Value;
2154be2b1797SNate Lawson 	else
2155be2b1797SNate Lawson 	    status = AE_TYPE;
2156c5ba0be4SMike Smith     }
21570c7da7acSJohn Baldwin 
21580c7da7acSJohn Baldwin     /*
21590c7da7acSJohn Baldwin      * In some applications, a method that's expected to return an Integer
21600c7da7acSJohn Baldwin      * may instead return a Buffer (probably to simplify some internal
21610c7da7acSJohn Baldwin      * arithmetic).  We'll try to fetch whatever it is, and if it's a Buffer,
21620c7da7acSJohn Baldwin      * convert it into an Integer as best we can.
21630c7da7acSJohn Baldwin      *
21640c7da7acSJohn Baldwin      * This is a hack.
21650c7da7acSJohn Baldwin      */
2166be2b1797SNate Lawson     if (status == AE_BUFFER_OVERFLOW) {
2167b53f2771SMike Smith 	if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
2168be2b1797SNate Lawson 	    status = AE_NO_MEMORY;
21690c7da7acSJohn Baldwin 	} else {
2170be2b1797SNate Lawson 	    status = AcpiEvaluateObject(handle, path, NULL, &buf);
2171be2b1797SNate Lawson 	    if (ACPI_SUCCESS(status))
2172be2b1797SNate Lawson 		status = acpi_ConvertBufferToInteger(&buf, number);
21730c7da7acSJohn Baldwin 	    AcpiOsFree(buf.Pointer);
21740c7da7acSJohn Baldwin 	}
2175f97739daSNate Lawson     }
2176be2b1797SNate Lawson     return (status);
2177c5ba0be4SMike Smith }
2178c5ba0be4SMike Smith 
2179c573e654SMitsuru IWASAKI ACPI_STATUS
2180cc58e4eeSNate Lawson acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2181c573e654SMitsuru IWASAKI {
2182c573e654SMitsuru IWASAKI     ACPI_OBJECT	*p;
2183dba55fa2SNate Lawson     UINT8	*val;
2184c573e654SMitsuru IWASAKI     int		i;
2185c573e654SMitsuru IWASAKI 
2186c573e654SMitsuru IWASAKI     p = (ACPI_OBJECT *)bufp->Pointer;
2187c573e654SMitsuru IWASAKI     if (p->Type == ACPI_TYPE_INTEGER) {
2188c573e654SMitsuru IWASAKI 	*number = p->Integer.Value;
2189c573e654SMitsuru IWASAKI 	return (AE_OK);
2190c573e654SMitsuru IWASAKI     }
2191c573e654SMitsuru IWASAKI     if (p->Type != ACPI_TYPE_BUFFER)
2192c573e654SMitsuru IWASAKI 	return (AE_TYPE);
2193c573e654SMitsuru IWASAKI     if (p->Buffer.Length > sizeof(int))
2194c573e654SMitsuru IWASAKI 	return (AE_BAD_DATA);
2195be2b1797SNate Lawson 
2196c573e654SMitsuru IWASAKI     *number = 0;
2197dba55fa2SNate Lawson     val = p->Buffer.Pointer;
2198c573e654SMitsuru IWASAKI     for (i = 0; i < p->Buffer.Length; i++)
2199dba55fa2SNate Lawson 	*number += val[i] << (i * 8);
2200c573e654SMitsuru IWASAKI     return (AE_OK);
2201c573e654SMitsuru IWASAKI }
2202c573e654SMitsuru IWASAKI 
2203c5ba0be4SMike Smith /*
2204c5ba0be4SMike Smith  * Iterate over the elements of an a package object, calling the supplied
2205c5ba0be4SMike Smith  * function for each element.
2206c5ba0be4SMike Smith  *
2207c5ba0be4SMike Smith  * XXX possible enhancement might be to abort traversal on error.
2208c5ba0be4SMike Smith  */
2209c5ba0be4SMike Smith ACPI_STATUS
2210be2b1797SNate Lawson acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2211be2b1797SNate Lawson 	void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2212c5ba0be4SMike Smith {
2213c5ba0be4SMike Smith     ACPI_OBJECT	*comp;
2214c5ba0be4SMike Smith     int		i;
2215c5ba0be4SMike Smith 
2216be2b1797SNate Lawson     if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2217c5ba0be4SMike Smith 	return (AE_BAD_PARAMETER);
2218c5ba0be4SMike Smith 
2219be2b1797SNate Lawson     /* Iterate over components */
2220be2b1797SNate Lawson     i = 0;
2221be2b1797SNate Lawson     comp = pkg->Package.Elements;
2222be2b1797SNate Lawson     for (; i < pkg->Package.Count; i++, comp++)
2223c5ba0be4SMike Smith 	func(comp, arg);
2224c5ba0be4SMike Smith 
2225c5ba0be4SMike Smith     return (AE_OK);
2226c5ba0be4SMike Smith }
2227c5ba0be4SMike Smith 
22286f69255bSMike Smith /*
22296f69255bSMike Smith  * Find the (index)th resource object in a set.
22306f69255bSMike Smith  */
22316f69255bSMike Smith ACPI_STATUS
22326d63101aSMike Smith acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
22336f69255bSMike Smith {
22346d63101aSMike Smith     ACPI_RESOURCE	*rp;
22356f69255bSMike Smith     int			i;
22366f69255bSMike Smith 
22376d63101aSMike Smith     rp = (ACPI_RESOURCE *)buf->Pointer;
22386f69255bSMike Smith     i = index;
22396d63101aSMike Smith     while (i-- > 0) {
2240be2b1797SNate Lawson 	/* Range check */
22416d63101aSMike Smith 	if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
22426f69255bSMike Smith 	    return (AE_BAD_PARAMETER);
2243be2b1797SNate Lawson 
2244be2b1797SNate Lawson 	/* Check for terminator */
2245e8d472a7SJung-uk Kim 	if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
22466d63101aSMike Smith 	    return (AE_NOT_FOUND);
2247abcbc5bcSNate Lawson 	rp = ACPI_NEXT_RESOURCE(rp);
22486f69255bSMike Smith     }
22496f69255bSMike Smith     if (resp != NULL)
22506d63101aSMike Smith 	*resp = rp;
2251be2b1797SNate Lawson 
22526d63101aSMike Smith     return (AE_OK);
22536d63101aSMike Smith }
22546d63101aSMike Smith 
22556d63101aSMike Smith /*
22566d63101aSMike Smith  * Append an ACPI_RESOURCE to an ACPI_BUFFER.
22576d63101aSMike Smith  *
22586d63101aSMike Smith  * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
22596d63101aSMike Smith  * provided to contain it.  If the ACPI_BUFFER is empty, allocate a sensible
22606d63101aSMike Smith  * backing block.  If the ACPI_RESOURCE is NULL, return an empty set of
22616d63101aSMike Smith  * resources.
22626d63101aSMike Smith  */
22636d63101aSMike Smith #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE	512
22646d63101aSMike Smith 
22656d63101aSMike Smith ACPI_STATUS
22666d63101aSMike Smith acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
22676d63101aSMike Smith {
22686d63101aSMike Smith     ACPI_RESOURCE	*rp;
22696d63101aSMike Smith     void		*newp;
22706d63101aSMike Smith 
2271be2b1797SNate Lawson     /* Initialise the buffer if necessary. */
22726d63101aSMike Smith     if (buf->Pointer == NULL) {
22736d63101aSMike Smith 	buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
22746d63101aSMike Smith 	if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
22756d63101aSMike Smith 	    return (AE_NO_MEMORY);
22766d63101aSMike Smith 	rp = (ACPI_RESOURCE *)buf->Pointer;
2277e8d472a7SJung-uk Kim 	rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
22786d63101aSMike Smith 	rp->Length = 0;
22796d63101aSMike Smith     }
22806d63101aSMike Smith     if (res == NULL)
22816d63101aSMike Smith 	return (AE_OK);
22826d63101aSMike Smith 
22836d63101aSMike Smith     /*
22846d63101aSMike Smith      * Scan the current buffer looking for the terminator.
22856d63101aSMike Smith      * This will either find the terminator or hit the end
22866d63101aSMike Smith      * of the buffer and return an error.
22876d63101aSMike Smith      */
22886d63101aSMike Smith     rp = (ACPI_RESOURCE *)buf->Pointer;
22896d63101aSMike Smith     for (;;) {
2290be2b1797SNate Lawson 	/* Range check, don't go outside the buffer */
22916d63101aSMike Smith 	if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
22926d63101aSMike Smith 	    return (AE_BAD_PARAMETER);
2293e8d472a7SJung-uk Kim 	if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
22946d63101aSMike Smith 	    break;
2295abcbc5bcSNate Lawson 	rp = ACPI_NEXT_RESOURCE(rp);
22966d63101aSMike Smith     }
22976d63101aSMike Smith 
22986d63101aSMike Smith     /*
22996d63101aSMike Smith      * Check the size of the buffer and expand if required.
23006d63101aSMike Smith      *
23016d63101aSMike Smith      * Required size is:
23026d63101aSMike Smith      *	size of existing resources before terminator +
23036d63101aSMike Smith      *	size of new resource and header +
23046d63101aSMike Smith      * 	size of terminator.
23056d63101aSMike Smith      *
23066d63101aSMike Smith      * Note that this loop should really only run once, unless
23076d63101aSMike Smith      * for some reason we are stuffing a *really* huge resource.
23086d63101aSMike Smith      */
23096d63101aSMike Smith     while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
2310e8d472a7SJung-uk Kim 	    res->Length + ACPI_RS_SIZE_NO_DATA +
2311e8d472a7SJung-uk Kim 	    ACPI_RS_SIZE_MIN) >= buf->Length) {
23126d63101aSMike Smith 	if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
23136d63101aSMike Smith 	    return (AE_NO_MEMORY);
23146d63101aSMike Smith 	bcopy(buf->Pointer, newp, buf->Length);
2315a692219dSMike Smith 	rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2316a692219dSMike Smith 			       ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
23176d63101aSMike Smith 	AcpiOsFree(buf->Pointer);
23186d63101aSMike Smith 	buf->Pointer = newp;
23196d63101aSMike Smith 	buf->Length += buf->Length;
23206d63101aSMike Smith     }
23216d63101aSMike Smith 
2322be2b1797SNate Lawson     /* Insert the new resource. */
2323e8d472a7SJung-uk Kim     bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
23246d63101aSMike Smith 
2325be2b1797SNate Lawson     /* And add the terminator. */
2326abcbc5bcSNate Lawson     rp = ACPI_NEXT_RESOURCE(rp);
2327e8d472a7SJung-uk Kim     rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
23286d63101aSMike Smith     rp->Length = 0;
23296d63101aSMike Smith 
23306f69255bSMike Smith     return (AE_OK);
23316f69255bSMike Smith }
2332c5ba0be4SMike Smith 
2333da14ac9fSJohn Baldwin /*
2334da14ac9fSJohn Baldwin  * Set interrupt model.
2335da14ac9fSJohn Baldwin  */
2336da14ac9fSJohn Baldwin ACPI_STATUS
2337da14ac9fSJohn Baldwin acpi_SetIntrModel(int model)
2338da14ac9fSJohn Baldwin {
2339da14ac9fSJohn Baldwin 
2340c310653eSNate Lawson     return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2341da14ac9fSJohn Baldwin }
2342da14ac9fSJohn Baldwin 
234300a30448SNate Lawson /*
2344d95e7f5aSJohn Baldwin  * Walk subtables of a table and call a callback routine for each
2345d95e7f5aSJohn Baldwin  * subtable.  The caller should provide the first subtable and a
2346d95e7f5aSJohn Baldwin  * pointer to the end of the table.  This can be used to walk tables
2347d95e7f5aSJohn Baldwin  * such as MADT and SRAT that use subtable entries.
2348d95e7f5aSJohn Baldwin  */
2349d95e7f5aSJohn Baldwin void
2350d95e7f5aSJohn Baldwin acpi_walk_subtables(void *first, void *end, acpi_subtable_handler *handler,
2351d95e7f5aSJohn Baldwin     void *arg)
2352d95e7f5aSJohn Baldwin {
2353d95e7f5aSJohn Baldwin     ACPI_SUBTABLE_HEADER *entry;
2354d95e7f5aSJohn Baldwin 
2355d95e7f5aSJohn Baldwin     for (entry = first; (void *)entry < end; ) {
2356d95e7f5aSJohn Baldwin 	/* Avoid an infinite loop if we hit a bogus entry. */
2357d95e7f5aSJohn Baldwin 	if (entry->Length < sizeof(ACPI_SUBTABLE_HEADER))
2358d95e7f5aSJohn Baldwin 	    return;
2359d95e7f5aSJohn Baldwin 
2360d95e7f5aSJohn Baldwin 	handler(entry, arg);
2361d95e7f5aSJohn Baldwin 	entry = ACPI_ADD_PTR(ACPI_SUBTABLE_HEADER, entry, entry->Length);
2362d95e7f5aSJohn Baldwin     }
2363d95e7f5aSJohn Baldwin }
2364d95e7f5aSJohn Baldwin 
2365d95e7f5aSJohn Baldwin /*
236600a30448SNate Lawson  * DEPRECATED.  This interface has serious deficiencies and will be
236700a30448SNate Lawson  * removed.
236800a30448SNate Lawson  *
236900a30448SNate Lawson  * Immediately enter the sleep state.  In the old model, acpiconf(8) ran
237000a30448SNate Lawson  * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
237100a30448SNate Lawson  */
237200a30448SNate Lawson ACPI_STATUS
237300a30448SNate Lawson acpi_SetSleepState(struct acpi_softc *sc, int state)
237400a30448SNate Lawson {
237500a30448SNate Lawson     static int once;
237600a30448SNate Lawson 
237700a30448SNate Lawson     if (!once) {
23782d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
237900a30448SNate Lawson "warning: acpi_SetSleepState() deprecated, need to update your software\n");
238000a30448SNate Lawson 	once = 1;
238100a30448SNate Lawson     }
238200a30448SNate Lawson     return (acpi_EnterSleepState(sc, state));
238300a30448SNate Lawson }
238400a30448SNate Lawson 
2385c66d2b38SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
238600a30448SNate Lawson static void
238700a30448SNate Lawson acpi_sleep_force(void *arg)
238800a30448SNate Lawson {
23892d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
239000a30448SNate Lawson 
23912d0c82e8SJung-uk Kim     device_printf(sc->acpi_dev,
23922d0c82e8SJung-uk Kim 	"suspend request timed out, forcing sleep now\n");
239300a30448SNate Lawson     if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
23942d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev, "force sleep state S%d failed\n",
23952d0c82e8SJung-uk Kim 	    sc->acpi_next_sstate);
239600a30448SNate Lawson }
2397c66d2b38SJung-uk Kim #endif
239800a30448SNate Lawson 
239900a30448SNate Lawson /*
240000a30448SNate Lawson  * Request that the system enter the given suspend state.  All /dev/apm
240100a30448SNate Lawson  * devices and devd(8) will be notified.  Userland then has a chance to
240200a30448SNate Lawson  * save state and acknowledge the request.  The system sleeps once all
240300a30448SNate Lawson  * acks are in.
240400a30448SNate Lawson  */
240500a30448SNate Lawson int
240600a30448SNate Lawson acpi_ReqSleepState(struct acpi_softc *sc, int state)
240700a30448SNate Lawson {
240871f99e63SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
240900a30448SNate Lawson     struct apm_clone_data *clone;
2410337744d9SJung-uk Kim     ACPI_STATUS status;
241100a30448SNate Lawson 
2412a0e73a12SJung-uk Kim     if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
241300a30448SNate Lawson 	return (EINVAL);
2414a0e73a12SJung-uk Kim     if (!acpi_sleep_states[state])
2415a0e73a12SJung-uk Kim 	return (EOPNOTSUPP);
241600a30448SNate Lawson 
2417337744d9SJung-uk Kim     ACPI_LOCK(acpi);
241800a30448SNate Lawson 
241900a30448SNate Lawson     /* If a suspend request is already in progress, just return. */
242000a30448SNate Lawson     if (sc->acpi_next_sstate != 0) {
242100a30448SNate Lawson     	ACPI_UNLOCK(acpi);
242200a30448SNate Lawson 	return (0);
242300a30448SNate Lawson     }
242400a30448SNate Lawson 
2425337744d9SJung-uk Kim     /* S5 (soft-off) should be entered directly with no waiting. */
2426337744d9SJung-uk Kim     if (state == ACPI_STATE_S5) {
2427337744d9SJung-uk Kim     	ACPI_UNLOCK(acpi);
2428337744d9SJung-uk Kim 	status = acpi_EnterSleepState(sc, state);
2429337744d9SJung-uk Kim 	return (ACPI_SUCCESS(status) ? 0 : ENXIO);
2430337744d9SJung-uk Kim     }
2431337744d9SJung-uk Kim 
243200a30448SNate Lawson     /* Record the pending state and notify all apm devices. */
243300a30448SNate Lawson     sc->acpi_next_sstate = state;
243400a30448SNate Lawson     STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
243500a30448SNate Lawson 	clone->notify_status = APM_EV_NONE;
243600a30448SNate Lawson 	if ((clone->flags & ACPI_EVF_DEVD) == 0) {
243700a30448SNate Lawson 	    selwakeuppri(&clone->sel_read, PZERO);
2438374d9c4dSJohn Baldwin 	    KNOTE_LOCKED(&clone->sel_read.si_note, 0);
243900a30448SNate Lawson 	}
244000a30448SNate Lawson     }
244100a30448SNate Lawson 
24420c26519eSMitsuru IWASAKI     /* If devd(8) is not running, immediately enter the sleep state. */
2443d42f0ad8SJung-uk Kim     if (!devctl_process_running()) {
24440c26519eSMitsuru IWASAKI 	ACPI_UNLOCK(acpi);
2445337744d9SJung-uk Kim 	status = acpi_EnterSleepState(sc, state);
2446337744d9SJung-uk Kim 	return (ACPI_SUCCESS(status) ? 0 : ENXIO);
24470c26519eSMitsuru IWASAKI     }
24480c26519eSMitsuru IWASAKI 
244900a30448SNate Lawson     /*
245000a30448SNate Lawson      * Set a timeout to fire if userland doesn't ack the suspend request
245100a30448SNate Lawson      * in time.  This way we still eventually go to sleep if we were
245200a30448SNate Lawson      * overheating or running low on battery, even if userland is hung.
245300a30448SNate Lawson      * We cancel this timeout once all userland acks are in or the
245400a30448SNate Lawson      * suspend request is aborted.
245500a30448SNate Lawson      */
245600a30448SNate Lawson     callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
245700a30448SNate Lawson     ACPI_UNLOCK(acpi);
2458d42f0ad8SJung-uk Kim 
2459d42f0ad8SJung-uk Kim     /* Now notify devd(8) also. */
2460d42f0ad8SJung-uk Kim     acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2461d42f0ad8SJung-uk Kim 
246200a30448SNate Lawson     return (0);
2463c66d2b38SJung-uk Kim #else
2464c66d2b38SJung-uk Kim     /* This platform does not support acpi suspend/resume. */
2465c66d2b38SJung-uk Kim     return (EOPNOTSUPP);
2466c66d2b38SJung-uk Kim #endif
246700a30448SNate Lawson }
246800a30448SNate Lawson 
246900a30448SNate Lawson /*
247000a30448SNate Lawson  * Acknowledge (or reject) a pending sleep state.  The caller has
247100a30448SNate Lawson  * prepared for suspend and is now ready for it to proceed.  If the
247200a30448SNate Lawson  * error argument is non-zero, it indicates suspend should be cancelled
247300a30448SNate Lawson  * and gives an errno value describing why.  Once all votes are in,
247400a30448SNate Lawson  * we suspend the system.
247500a30448SNate Lawson  */
247600a30448SNate Lawson int
247700a30448SNate Lawson acpi_AckSleepState(struct apm_clone_data *clone, int error)
247800a30448SNate Lawson {
2479c66d2b38SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
248000a30448SNate Lawson     struct acpi_softc *sc;
248100a30448SNate Lawson     int ret, sleeping;
248200a30448SNate Lawson 
248300a30448SNate Lawson     /* If no pending sleep state, return an error. */
248400a30448SNate Lawson     ACPI_LOCK(acpi);
248500a30448SNate Lawson     sc = clone->acpi_sc;
248600a30448SNate Lawson     if (sc->acpi_next_sstate == 0) {
248700a30448SNate Lawson     	ACPI_UNLOCK(acpi);
248800a30448SNate Lawson 	return (ENXIO);
248900a30448SNate Lawson     }
249000a30448SNate Lawson 
249100a30448SNate Lawson     /* Caller wants to abort suspend process. */
249200a30448SNate Lawson     if (error) {
249300a30448SNate Lawson 	sc->acpi_next_sstate = 0;
249400a30448SNate Lawson 	callout_stop(&sc->susp_force_to);
24952d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
24962d0c82e8SJung-uk Kim 	    "listener on %s cancelled the pending suspend\n",
249700a30448SNate Lawson 	    devtoname(clone->cdev));
249800a30448SNate Lawson     	ACPI_UNLOCK(acpi);
249900a30448SNate Lawson 	return (0);
250000a30448SNate Lawson     }
250100a30448SNate Lawson 
250200a30448SNate Lawson     /*
250300a30448SNate Lawson      * Mark this device as acking the suspend request.  Then, walk through
250400a30448SNate Lawson      * all devices, seeing if they agree yet.  We only count devices that
250500a30448SNate Lawson      * are writable since read-only devices couldn't ack the request.
250600a30448SNate Lawson      */
250700a30448SNate Lawson     sleeping = TRUE;
2508c66d2b38SJung-uk Kim     clone->notify_status = APM_EV_ACKED;
250900a30448SNate Lawson     STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
251000a30448SNate Lawson 	if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
251100a30448SNate Lawson 	    clone->notify_status != APM_EV_ACKED) {
251200a30448SNate Lawson 	    sleeping = FALSE;
251300a30448SNate Lawson 	    break;
251400a30448SNate Lawson 	}
251500a30448SNate Lawson     }
251600a30448SNate Lawson 
251700a30448SNate Lawson     /* If all devices have voted "yes", we will suspend now. */
251800a30448SNate Lawson     if (sleeping)
251900a30448SNate Lawson 	callout_stop(&sc->susp_force_to);
252000a30448SNate Lawson     ACPI_UNLOCK(acpi);
252100a30448SNate Lawson     ret = 0;
252200a30448SNate Lawson     if (sleeping) {
252300a30448SNate Lawson 	if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
252400a30448SNate Lawson 		ret = ENODEV;
252500a30448SNate Lawson     }
252600a30448SNate Lawson     return (ret);
2527c66d2b38SJung-uk Kim #else
2528c66d2b38SJung-uk Kim     /* This platform does not support acpi suspend/resume. */
2529c66d2b38SJung-uk Kim     return (EOPNOTSUPP);
2530c66d2b38SJung-uk Kim #endif
253100a30448SNate Lawson }
253200a30448SNate Lawson 
2533ece50487SMitsuru IWASAKI static void
2534ece50487SMitsuru IWASAKI acpi_sleep_enable(void *arg)
2535ece50487SMitsuru IWASAKI {
2536d42f0ad8SJung-uk Kim     struct acpi_softc	*sc = (struct acpi_softc *)arg;
2537bee4aa4aSNate Lawson 
2538a0e73a12SJung-uk Kim     /* Reschedule if the system is not fully up and running. */
2539a0e73a12SJung-uk Kim     if (!AcpiGbl_SystemAwakeAndRunning) {
2540a0e73a12SJung-uk Kim 	timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME);
2541a0e73a12SJung-uk Kim 	return;
2542a0e73a12SJung-uk Kim     }
2543a0e73a12SJung-uk Kim 
2544d42f0ad8SJung-uk Kim     ACPI_LOCK(acpi);
2545a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = FALSE;
2546d42f0ad8SJung-uk Kim     ACPI_UNLOCK(acpi);
2547d42f0ad8SJung-uk Kim }
2548d42f0ad8SJung-uk Kim 
2549d42f0ad8SJung-uk Kim static ACPI_STATUS
2550d42f0ad8SJung-uk Kim acpi_sleep_disable(struct acpi_softc *sc)
2551d42f0ad8SJung-uk Kim {
2552d42f0ad8SJung-uk Kim     ACPI_STATUS		status;
2553d42f0ad8SJung-uk Kim 
2554a0e73a12SJung-uk Kim     /* Fail if the system is not fully up and running. */
2555a0e73a12SJung-uk Kim     if (!AcpiGbl_SystemAwakeAndRunning)
2556a0e73a12SJung-uk Kim 	return (AE_ERROR);
2557a0e73a12SJung-uk Kim 
2558d42f0ad8SJung-uk Kim     ACPI_LOCK(acpi);
2559d42f0ad8SJung-uk Kim     status = sc->acpi_sleep_disabled ? AE_ERROR : AE_OK;
2560a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = TRUE;
2561d42f0ad8SJung-uk Kim     ACPI_UNLOCK(acpi);
2562d42f0ad8SJung-uk Kim 
2563d42f0ad8SJung-uk Kim     return (status);
2564ece50487SMitsuru IWASAKI }
2565c30382dfSMitsuru IWASAKI 
256615e2f34fSNate Lawson enum acpi_sleep_state {
256715e2f34fSNate Lawson     ACPI_SS_NONE,
256815e2f34fSNate Lawson     ACPI_SS_GPE_SET,
256915e2f34fSNate Lawson     ACPI_SS_DEV_SUSPEND,
257015e2f34fSNate Lawson     ACPI_SS_SLP_PREP,
257115e2f34fSNate Lawson     ACPI_SS_SLEPT,
257215e2f34fSNate Lawson };
257315e2f34fSNate Lawson 
257415e32d5dSMike Smith /*
257500a30448SNate Lawson  * Enter the desired system sleep state.
257615e32d5dSMike Smith  *
2577be2b1797SNate Lawson  * Currently we support S1-S5 but S4 is only S4BIOS
257815e32d5dSMike Smith  */
257900a30448SNate Lawson static ACPI_STATUS
258000a30448SNate Lawson acpi_EnterSleepState(struct acpi_softc *sc, int state)
258115e32d5dSMike Smith {
258215e2f34fSNate Lawson     ACPI_STATUS	status;
258315e2f34fSNate Lawson     enum acpi_sleep_state slp_state;
258415e32d5dSMike Smith 
2585b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
25860ae55423SMike Smith 
2587a0e73a12SJung-uk Kim     if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
258833c70d41SAndriy Gapon 	return_ACPI_STATUS (AE_BAD_PARAMETER);
2589a0e73a12SJung-uk Kim     if (!acpi_sleep_states[state]) {
2590a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev, "Sleep state S%d not supported by BIOS\n",
2591a0e73a12SJung-uk Kim 	    state);
2592a0e73a12SJung-uk Kim 	return (AE_SUPPORT);
2593a0e73a12SJung-uk Kim     }
2594a0e73a12SJung-uk Kim 
2595a0e73a12SJung-uk Kim     /* Re-entry once we're suspending is not allowed. */
2596a0e73a12SJung-uk Kim     status = acpi_sleep_disable(sc);
2597a0e73a12SJung-uk Kim     if (ACPI_FAILURE(status)) {
2598a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev,
2599a0e73a12SJung-uk Kim 	    "suspend request ignored (not ready yet)\n");
2600a0e73a12SJung-uk Kim 	return (status);
2601a0e73a12SJung-uk Kim     }
260233c70d41SAndriy Gapon 
260333c70d41SAndriy Gapon     if (state == ACPI_STATE_S5) {
260433c70d41SAndriy Gapon 	/*
260533c70d41SAndriy Gapon 	 * Shut down cleanly and power off.  This will call us back through the
260633c70d41SAndriy Gapon 	 * shutdown handlers.
260733c70d41SAndriy Gapon 	 */
260833c70d41SAndriy Gapon 	shutdown_nice(RB_POWEROFF);
260933c70d41SAndriy Gapon 	return_ACPI_STATUS (AE_OK);
261033c70d41SAndriy Gapon     }
261133c70d41SAndriy Gapon 
261236a483bbSJung-uk Kim     if (smp_started) {
2613c66d2b38SJung-uk Kim 	thread_lock(curthread);
2614c66d2b38SJung-uk Kim 	sched_bind(curthread, 0);
2615c66d2b38SJung-uk Kim 	thread_unlock(curthread);
261636a483bbSJung-uk Kim     }
2617c66d2b38SJung-uk Kim 
2618a56fe095SJohn Baldwin     /*
2619a56fe095SJohn Baldwin      * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2620a56fe095SJohn Baldwin      * drivers need this.
2621a56fe095SJohn Baldwin      */
2622a56fe095SJohn Baldwin     mtx_lock(&Giant);
2623c66d2b38SJung-uk Kim 
262415e2f34fSNate Lawson     slp_state = ACPI_SS_NONE;
262556d8cb57SMitsuru IWASAKI 
2626a1fccb47SMitsuru IWASAKI     sc->acpi_sstate = state;
2627a1fccb47SMitsuru IWASAKI 
2628d4b9ff91SNate Lawson     /* Enable any GPEs as appropriate and requested by the user. */
2629d4b9ff91SNate Lawson     acpi_wake_prep_walk(state);
263015e2f34fSNate Lawson     slp_state = ACPI_SS_GPE_SET;
2631e8b4d56eSNate Lawson 
263215e32d5dSMike Smith     /*
2633c7f88fc3SNate Lawson      * Inform all devices that we are going to sleep.  If at least one
2634c7f88fc3SNate Lawson      * device fails, DEVICE_SUSPEND() automatically resumes the tree.
263515e32d5dSMike Smith      *
2636c7f88fc3SNate Lawson      * XXX Note that a better two-pass approach with a 'veto' pass
2637c7f88fc3SNate Lawson      * followed by a "real thing" pass would be better, but the current
2638c7f88fc3SNate Lawson      * bus interface does not provide for this.
263915e32d5dSMike Smith      */
264015e2f34fSNate Lawson     if (DEVICE_SUSPEND(root_bus) != 0) {
264115e2f34fSNate Lawson 	device_printf(sc->acpi_dev, "device_suspend failed\n");
264233c70d41SAndriy Gapon 	goto backout;
264315e2f34fSNate Lawson     }
264415e2f34fSNate Lawson     slp_state = ACPI_SS_DEV_SUSPEND;
2645b9c780d6SMitsuru IWASAKI 
264693bfd059SNate Lawson     /* If testing device suspend only, back out of everything here. */
264793bfd059SNate Lawson     if (acpi_susp_bounce)
264833c70d41SAndriy Gapon 	goto backout;
264993bfd059SNate Lawson 
2650be2b1797SNate Lawson     status = AcpiEnterSleepStatePrep(state);
2651be2b1797SNate Lawson     if (ACPI_FAILURE(status)) {
2652b9c780d6SMitsuru IWASAKI 	device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2653b9c780d6SMitsuru IWASAKI 		      AcpiFormatException(status));
265433c70d41SAndriy Gapon 	goto backout;
2655b9c780d6SMitsuru IWASAKI     }
265615e2f34fSNate Lawson     slp_state = ACPI_SS_SLP_PREP;
2657b9c780d6SMitsuru IWASAKI 
2658be2b1797SNate Lawson     if (sc->acpi_sleep_delay > 0)
2659ff01efb5SMitsuru IWASAKI 	DELAY(sc->acpi_sleep_delay * 1000000);
2660ff01efb5SMitsuru IWASAKI 
26616161544cSTakanori Watanabe     if (state != ACPI_STATE_S1) {
26626161544cSTakanori Watanabe 	acpi_sleep_machdep(sc, state);
26636161544cSTakanori Watanabe 
26646161544cSTakanori Watanabe 	/* Re-enable ACPI hardware on wakeup from sleep state 4. */
2665be2b1797SNate Lawson 	if (state == ACPI_STATE_S4)
2666964679ceSMitsuru IWASAKI 	    AcpiEnable();
26676161544cSTakanori Watanabe     } else {
2668c7f88fc3SNate Lawson 	ACPI_DISABLE_IRQS();
2669adad4744SNate Lawson 	status = AcpiEnterSleepState(state);
2670be2b1797SNate Lawson 	if (ACPI_FAILURE(status)) {
2671be2b1797SNate Lawson 	    device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2672be2b1797SNate Lawson 			  AcpiFormatException(status));
267333c70d41SAndriy Gapon 	    goto backout;
267415e32d5dSMike Smith 	}
26756161544cSTakanori Watanabe     }
267615e2f34fSNate Lawson     slp_state = ACPI_SS_SLEPT;
2677ece50487SMitsuru IWASAKI 
267815e2f34fSNate Lawson     /*
267915e2f34fSNate Lawson      * Back out state according to how far along we got in the suspend
268015e2f34fSNate Lawson      * process.  This handles both the error and success cases.
268115e2f34fSNate Lawson      */
268233c70d41SAndriy Gapon backout:
268315e2f34fSNate Lawson     if (slp_state >= ACPI_SS_GPE_SET) {
268415e2f34fSNate Lawson 	acpi_wake_prep_walk(state);
268515e2f34fSNate Lawson 	sc->acpi_sstate = ACPI_STATE_S0;
268615e2f34fSNate Lawson     }
268715e2f34fSNate Lawson     if (slp_state >= ACPI_SS_SLP_PREP)
268815e2f34fSNate Lawson 	AcpiLeaveSleepState(state);
2689071339e2SNate Lawson     if (slp_state >= ACPI_SS_DEV_SUSPEND)
2690071339e2SNate Lawson 	DEVICE_RESUME(root_bus);
269115e2f34fSNate Lawson     if (slp_state >= ACPI_SS_SLEPT)
269215e2f34fSNate Lawson 	acpi_enable_fixed_events(sc);
2693337744d9SJung-uk Kim     sc->acpi_next_sstate = 0;
269415e2f34fSNate Lawson 
2695a56fe095SJohn Baldwin     mtx_unlock(&Giant);
2696c66d2b38SJung-uk Kim 
269736a483bbSJung-uk Kim     if (smp_started) {
2698c66d2b38SJung-uk Kim 	thread_lock(curthread);
2699c66d2b38SJung-uk Kim 	sched_unbind(curthread);
2700c66d2b38SJung-uk Kim 	thread_unlock(curthread);
270136a483bbSJung-uk Kim     }
2702c66d2b38SJung-uk Kim 
2703d42f0ad8SJung-uk Kim     /* Allow another sleep request after a while. */
2704d42f0ad8SJung-uk Kim     timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME);
2705d42f0ad8SJung-uk Kim 
2706d42f0ad8SJung-uk Kim     /* Run /etc/rc.resume after we are back. */
2707d42f0ad8SJung-uk Kim     if (devctl_process_running())
2708d42f0ad8SJung-uk Kim 	acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2709d42f0ad8SJung-uk Kim 
27100ae55423SMike Smith     return_ACPI_STATUS (status);
271115e32d5dSMike Smith }
271215e32d5dSMike Smith 
27130755473bSJung-uk Kim void
27140755473bSJung-uk Kim acpi_resync_clock(struct acpi_softc *sc)
27150755473bSJung-uk Kim {
27160755473bSJung-uk Kim 
27170755473bSJung-uk Kim     if (!acpi_reset_clock)
27180755473bSJung-uk Kim 	return;
27190755473bSJung-uk Kim 
27200755473bSJung-uk Kim     /*
27210755473bSJung-uk Kim      * Warm up timecounter again and reset system clock.
27220755473bSJung-uk Kim      */
27230755473bSJung-uk Kim     (void)timecounter->tc_get_timecount(timecounter);
27240755473bSJung-uk Kim     (void)timecounter->tc_get_timecount(timecounter);
27250755473bSJung-uk Kim     inittodr(time_second + sc->acpi_sleep_delay);
27260755473bSJung-uk Kim }
27270755473bSJung-uk Kim 
2728e8b4d56eSNate Lawson /* Enable or disable the device's wake GPE. */
2729e8b4d56eSNate Lawson int
2730e8b4d56eSNate Lawson acpi_wake_set_enable(device_t dev, int enable)
2731e8b4d56eSNate Lawson {
2732e8b4d56eSNate Lawson     struct acpi_prw_data prw;
2733e8b4d56eSNate Lawson     ACPI_STATUS status;
2734e8b4d56eSNate Lawson     int flags;
2735e8b4d56eSNate Lawson 
2736d4b9ff91SNate Lawson     /* Make sure the device supports waking the system and get the GPE. */
27372be4e471SJung-uk Kim     if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2738e8b4d56eSNate Lawson 	return (ENXIO);
2739e8b4d56eSNate Lawson 
2740d4b9ff91SNate Lawson     flags = acpi_get_flags(dev);
2741e8b4d56eSNate Lawson     if (enable) {
27425a77b11bSJung-uk Kim 	status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
27435a77b11bSJung-uk Kim 	    ACPI_GPE_ENABLE);
2744e8b4d56eSNate Lawson 	if (ACPI_FAILURE(status)) {
2745e8b4d56eSNate Lawson 	    device_printf(dev, "enable wake failed\n");
2746e8b4d56eSNate Lawson 	    return (ENXIO);
2747e8b4d56eSNate Lawson 	}
2748d4b9ff91SNate Lawson 	acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
2749e8b4d56eSNate Lawson     } else {
27505a77b11bSJung-uk Kim 	status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
27515a77b11bSJung-uk Kim 	    ACPI_GPE_DISABLE);
2752e8b4d56eSNate Lawson 	if (ACPI_FAILURE(status)) {
2753e8b4d56eSNate Lawson 	    device_printf(dev, "disable wake failed\n");
2754e8b4d56eSNate Lawson 	    return (ENXIO);
2755e8b4d56eSNate Lawson 	}
2756d4b9ff91SNate Lawson 	acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
2757e8b4d56eSNate Lawson     }
2758e8b4d56eSNate Lawson 
2759e8b4d56eSNate Lawson     return (0);
2760e8b4d56eSNate Lawson }
2761e8b4d56eSNate Lawson 
2762d4b9ff91SNate Lawson static int
2763d4b9ff91SNate Lawson acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
2764e8b4d56eSNate Lawson {
2765e8b4d56eSNate Lawson     struct acpi_prw_data prw;
2766d4b9ff91SNate Lawson     device_t dev;
2767e8b4d56eSNate Lawson 
2768d4b9ff91SNate Lawson     /* Check that this is a wake-capable device and get its GPE. */
2769e8b4d56eSNate Lawson     if (acpi_parse_prw(handle, &prw) != 0)
2770e8b4d56eSNate Lawson 	return (ENXIO);
2771d4b9ff91SNate Lawson     dev = acpi_get_device(handle);
2772e8b4d56eSNate Lawson 
2773e8b4d56eSNate Lawson     /*
2774d4b9ff91SNate Lawson      * The destination sleep state must be less than (i.e., higher power)
2775d4b9ff91SNate Lawson      * or equal to the value specified by _PRW.  If this GPE cannot be
2776d4b9ff91SNate Lawson      * enabled for the next sleep state, then disable it.  If it can and
2777d4b9ff91SNate Lawson      * the user requested it be enabled, turn on any required power resources
2778d4b9ff91SNate Lawson      * and set _PSW.
2779e8b4d56eSNate Lawson      */
2780d4b9ff91SNate Lawson     if (sstate > prw.lowest_wake) {
27815a77b11bSJung-uk Kim 	AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
2782e8b4d56eSNate Lawson 	if (bootverbose)
2783d4b9ff91SNate Lawson 	    device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
2784d4b9ff91SNate Lawson 		acpi_name(handle), sstate);
2785d4b9ff91SNate Lawson     } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
2786d4b9ff91SNate Lawson 	acpi_pwr_wake_enable(handle, 1);
2787d4b9ff91SNate Lawson 	acpi_SetInteger(handle, "_PSW", 1);
2788d4b9ff91SNate Lawson 	if (bootverbose)
2789d4b9ff91SNate Lawson 	    device_printf(dev, "wake_prep enabled for %s (S%d)\n",
2790d4b9ff91SNate Lawson 		acpi_name(handle), sstate);
2791d4b9ff91SNate Lawson     }
2792cc85c78cSNate Lawson 
2793cc85c78cSNate Lawson     return (0);
2794e8b4d56eSNate Lawson }
2795e8b4d56eSNate Lawson 
2796d4b9ff91SNate Lawson static int
2797d4b9ff91SNate Lawson acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
2798cc85c78cSNate Lawson {
2799cc85c78cSNate Lawson     struct acpi_prw_data prw;
2800d4b9ff91SNate Lawson     device_t dev;
2801cc85c78cSNate Lawson 
2802cc85c78cSNate Lawson     /*
2803d4b9ff91SNate Lawson      * Check that this is a wake-capable device and get its GPE.  Return
2804d4b9ff91SNate Lawson      * now if the user didn't enable this device for wake.
2805cc85c78cSNate Lawson      */
2806d4b9ff91SNate Lawson     if (acpi_parse_prw(handle, &prw) != 0)
2807d4b9ff91SNate Lawson 	return (ENXIO);
2808d4b9ff91SNate Lawson     dev = acpi_get_device(handle);
2809d4b9ff91SNate Lawson     if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
2810d4b9ff91SNate Lawson 	return (0);
2811cc85c78cSNate Lawson 
2812d4b9ff91SNate Lawson     /*
2813d4b9ff91SNate Lawson      * If this GPE couldn't be enabled for the previous sleep state, it was
2814d4b9ff91SNate Lawson      * disabled before going to sleep so re-enable it.  If it was enabled,
2815d4b9ff91SNate Lawson      * clear _PSW and turn off any power resources it used.
2816d4b9ff91SNate Lawson      */
2817d4b9ff91SNate Lawson     if (sstate > prw.lowest_wake) {
28185a77b11bSJung-uk Kim 	AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
2819d4b9ff91SNate Lawson 	if (bootverbose)
2820d4b9ff91SNate Lawson 	    device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
2821d4b9ff91SNate Lawson     } else {
2822d4b9ff91SNate Lawson 	acpi_SetInteger(handle, "_PSW", 0);
2823d4b9ff91SNate Lawson 	acpi_pwr_wake_enable(handle, 0);
2824d4b9ff91SNate Lawson 	if (bootverbose)
2825d4b9ff91SNate Lawson 	    device_printf(dev, "run_prep cleaned up for %s\n",
2826d4b9ff91SNate Lawson 		acpi_name(handle));
2827d4b9ff91SNate Lawson     }
2828d4b9ff91SNate Lawson 
2829e8b4d56eSNate Lawson     return (0);
2830e8b4d56eSNate Lawson }
2831e8b4d56eSNate Lawson 
2832e8b4d56eSNate Lawson static ACPI_STATUS
2833d4b9ff91SNate Lawson acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
2834e8b4d56eSNate Lawson {
2835d4b9ff91SNate Lawson     int sstate;
2836e8b4d56eSNate Lawson 
2837d4b9ff91SNate Lawson     /* If suspending, run the sleep prep function, otherwise wake. */
2838d4b9ff91SNate Lawson     sstate = *(int *)context;
2839d4b9ff91SNate Lawson     if (AcpiGbl_SystemAwakeAndRunning)
2840d4b9ff91SNate Lawson 	acpi_wake_sleep_prep(handle, sstate);
2841d4b9ff91SNate Lawson     else
2842d4b9ff91SNate Lawson 	acpi_wake_run_prep(handle, sstate);
2843e8b4d56eSNate Lawson     return (AE_OK);
2844e8b4d56eSNate Lawson }
2845e8b4d56eSNate Lawson 
2846d4b9ff91SNate Lawson /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
2847e8b4d56eSNate Lawson static int
2848d4b9ff91SNate Lawson acpi_wake_prep_walk(int sstate)
2849e8b4d56eSNate Lawson {
2850e8b4d56eSNate Lawson     ACPI_HANDLE sb_handle;
2851e8b4d56eSNate Lawson 
2852e8b4d56eSNate Lawson     if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
2853d4b9ff91SNate Lawson 	AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
28542272d050SJung-uk Kim 	    acpi_wake_prep, NULL, &sstate, NULL);
2855e8b4d56eSNate Lawson     return (0);
2856e8b4d56eSNate Lawson }
2857e8b4d56eSNate Lawson 
285888a79fc0SNate Lawson /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
285988a79fc0SNate Lawson static int
286088a79fc0SNate Lawson acpi_wake_sysctl_walk(device_t dev)
286188a79fc0SNate Lawson {
286288a79fc0SNate Lawson     int error, i, numdevs;
286388a79fc0SNate Lawson     device_t *devlist;
286488a79fc0SNate Lawson     device_t child;
2865d4b9ff91SNate Lawson     ACPI_STATUS status;
286688a79fc0SNate Lawson 
286788a79fc0SNate Lawson     error = device_get_children(dev, &devlist, &numdevs);
28681c9ec538SNate Lawson     if (error != 0 || numdevs == 0) {
28691c9ec538SNate Lawson 	if (numdevs == 0)
28701c9ec538SNate Lawson 	    free(devlist, M_TEMP);
287188a79fc0SNate Lawson 	return (error);
28721c9ec538SNate Lawson     }
287388a79fc0SNate Lawson     for (i = 0; i < numdevs; i++) {
287488a79fc0SNate Lawson 	child = devlist[i];
2875d4b9ff91SNate Lawson 	acpi_wake_sysctl_walk(child);
287688a79fc0SNate Lawson 	if (!device_is_attached(child))
287788a79fc0SNate Lawson 	    continue;
2878d4b9ff91SNate Lawson 	status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
2879d4b9ff91SNate Lawson 	if (ACPI_SUCCESS(status)) {
288088a79fc0SNate Lawson 	    SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
288188a79fc0SNate Lawson 		SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
288288a79fc0SNate Lawson 		"wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
288388a79fc0SNate Lawson 		acpi_wake_set_sysctl, "I", "Device set to wake the system");
288488a79fc0SNate Lawson 	}
288588a79fc0SNate Lawson     }
288688a79fc0SNate Lawson     free(devlist, M_TEMP);
288788a79fc0SNate Lawson 
288888a79fc0SNate Lawson     return (0);
288988a79fc0SNate Lawson }
289088a79fc0SNate Lawson 
289188a79fc0SNate Lawson /* Enable or disable wake from userland. */
289288a79fc0SNate Lawson static int
289388a79fc0SNate Lawson acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
289488a79fc0SNate Lawson {
289588a79fc0SNate Lawson     int enable, error;
289688a79fc0SNate Lawson     device_t dev;
289788a79fc0SNate Lawson 
289888a79fc0SNate Lawson     dev = (device_t)arg1;
2899d4b9ff91SNate Lawson     enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
290088a79fc0SNate Lawson 
290188a79fc0SNate Lawson     error = sysctl_handle_int(oidp, &enable, 0, req);
290288a79fc0SNate Lawson     if (error != 0 || req->newptr == NULL)
290388a79fc0SNate Lawson 	return (error);
290488a79fc0SNate Lawson     if (enable != 0 && enable != 1)
290588a79fc0SNate Lawson 	return (EINVAL);
290688a79fc0SNate Lawson 
290788a79fc0SNate Lawson     return (acpi_wake_set_enable(dev, enable));
290888a79fc0SNate Lawson }
290988a79fc0SNate Lawson 
2910e8b4d56eSNate Lawson /* Parse a device's _PRW into a structure. */
2911d4b9ff91SNate Lawson int
2912e8b4d56eSNate Lawson acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2913e8b4d56eSNate Lawson {
2914e8b4d56eSNate Lawson     ACPI_STATUS			status;
2915e8b4d56eSNate Lawson     ACPI_BUFFER			prw_buffer;
2916e8b4d56eSNate Lawson     ACPI_OBJECT			*res, *res2;
2917d4b9ff91SNate Lawson     int				error, i, power_count;
2918e8b4d56eSNate Lawson 
2919e8b4d56eSNate Lawson     if (h == NULL || prw == NULL)
2920e8b4d56eSNate Lawson 	return (EINVAL);
2921e8b4d56eSNate Lawson 
2922e8b4d56eSNate Lawson     /*
2923e8b4d56eSNate Lawson      * The _PRW object (7.2.9) is only required for devices that have the
2924e8b4d56eSNate Lawson      * ability to wake the system from a sleeping state.
2925e8b4d56eSNate Lawson      */
2926e8b4d56eSNate Lawson     error = EINVAL;
2927e8b4d56eSNate Lawson     prw_buffer.Pointer = NULL;
2928e8b4d56eSNate Lawson     prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2929e8b4d56eSNate Lawson     status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2930e8b4d56eSNate Lawson     if (ACPI_FAILURE(status))
2931e8b4d56eSNate Lawson 	return (ENOENT);
2932e8b4d56eSNate Lawson     res = (ACPI_OBJECT *)prw_buffer.Pointer;
2933e8b4d56eSNate Lawson     if (res == NULL)
2934e8b4d56eSNate Lawson 	return (ENOENT);
2935e8b4d56eSNate Lawson     if (!ACPI_PKG_VALID(res, 2))
2936e8b4d56eSNate Lawson 	goto out;
2937e8b4d56eSNate Lawson 
2938e8b4d56eSNate Lawson     /*
2939e8b4d56eSNate Lawson      * Element 1 of the _PRW object:
2940e8b4d56eSNate Lawson      * The lowest power system sleeping state that can be entered while still
2941e8b4d56eSNate Lawson      * providing wake functionality.  The sleeping state being entered must
2942e8b4d56eSNate Lawson      * be less than (i.e., higher power) or equal to this value.
2943e8b4d56eSNate Lawson      */
2944e8b4d56eSNate Lawson     if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2945e8b4d56eSNate Lawson 	goto out;
2946e8b4d56eSNate Lawson 
2947e8b4d56eSNate Lawson     /*
2948e8b4d56eSNate Lawson      * Element 0 of the _PRW object:
2949e8b4d56eSNate Lawson      */
2950e8b4d56eSNate Lawson     switch (res->Package.Elements[0].Type) {
2951e8b4d56eSNate Lawson     case ACPI_TYPE_INTEGER:
2952e8b4d56eSNate Lawson 	/*
2953e8b4d56eSNate Lawson 	 * If the data type of this package element is numeric, then this
2954e8b4d56eSNate Lawson 	 * _PRW package element is the bit index in the GPEx_EN, in the
2955e8b4d56eSNate Lawson 	 * GPE blocks described in the FADT, of the enable bit that is
2956e8b4d56eSNate Lawson 	 * enabled for the wake event.
2957e8b4d56eSNate Lawson 	 */
2958e8b4d56eSNate Lawson 	prw->gpe_handle = NULL;
2959e8b4d56eSNate Lawson 	prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2960e8b4d56eSNate Lawson 	error = 0;
2961e8b4d56eSNate Lawson 	break;
2962e8b4d56eSNate Lawson     case ACPI_TYPE_PACKAGE:
2963e8b4d56eSNate Lawson 	/*
2964e8b4d56eSNate Lawson 	 * If the data type of this package element is a package, then this
2965e8b4d56eSNate Lawson 	 * _PRW package element is itself a package containing two
2966e8b4d56eSNate Lawson 	 * elements.  The first is an object reference to the GPE Block
2967e8b4d56eSNate Lawson 	 * device that contains the GPE that will be triggered by the wake
2968e8b4d56eSNate Lawson 	 * event.  The second element is numeric and it contains the bit
2969e8b4d56eSNate Lawson 	 * index in the GPEx_EN, in the GPE Block referenced by the
2970e8b4d56eSNate Lawson 	 * first element in the package, of the enable bit that is enabled for
2971e8b4d56eSNate Lawson 	 * the wake event.
2972e8b4d56eSNate Lawson 	 *
2973e8b4d56eSNate Lawson 	 * For example, if this field is a package then it is of the form:
2974e8b4d56eSNate Lawson 	 * Package() {\_SB.PCI0.ISA.GPE, 2}
2975e8b4d56eSNate Lawson 	 */
2976e8b4d56eSNate Lawson 	res2 = &res->Package.Elements[0];
2977e8b4d56eSNate Lawson 	if (!ACPI_PKG_VALID(res2, 2))
2978e8b4d56eSNate Lawson 	    goto out;
2979e8b4d56eSNate Lawson 	prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2980e8b4d56eSNate Lawson 	if (prw->gpe_handle == NULL)
2981e8b4d56eSNate Lawson 	    goto out;
2982e8b4d56eSNate Lawson 	if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2983e8b4d56eSNate Lawson 	    goto out;
2984e8b4d56eSNate Lawson 	error = 0;
2985e8b4d56eSNate Lawson 	break;
2986e8b4d56eSNate Lawson     default:
2987e8b4d56eSNate Lawson 	goto out;
2988e8b4d56eSNate Lawson     }
2989e8b4d56eSNate Lawson 
2990d4b9ff91SNate Lawson     /* Elements 2 to N of the _PRW object are power resources. */
2991d4b9ff91SNate Lawson     power_count = res->Package.Count - 2;
2992d4b9ff91SNate Lawson     if (power_count > ACPI_PRW_MAX_POWERRES) {
2993d4b9ff91SNate Lawson 	printf("ACPI device %s has too many power resources\n", acpi_name(h));
2994d4b9ff91SNate Lawson 	power_count = 0;
2995d4b9ff91SNate Lawson     }
2996d4b9ff91SNate Lawson     prw->power_res_count = power_count;
2997d4b9ff91SNate Lawson     for (i = 0; i < power_count; i++)
2998d4b9ff91SNate Lawson 	prw->power_res[i] = res->Package.Elements[i];
2999e8b4d56eSNate Lawson 
3000e8b4d56eSNate Lawson out:
3001e8b4d56eSNate Lawson     if (prw_buffer.Pointer != NULL)
3002e8b4d56eSNate Lawson 	AcpiOsFree(prw_buffer.Pointer);
3003e8b4d56eSNate Lawson     return (error);
3004e8b4d56eSNate Lawson }
3005e8b4d56eSNate Lawson 
300615e32d5dSMike Smith /*
300715e32d5dSMike Smith  * ACPI Event Handlers
300815e32d5dSMike Smith  */
300915e32d5dSMike Smith 
301015e32d5dSMike Smith /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
301115e32d5dSMike Smith 
301215e32d5dSMike Smith static void
301315e32d5dSMike Smith acpi_system_eventhandler_sleep(void *arg, int state)
301415e32d5dSMike Smith {
30152d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
301600a30448SNate Lawson     int ret;
3017bee4aa4aSNate Lawson 
3018b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
301915e32d5dSMike Smith 
3020a0e73a12SJung-uk Kim     /* Check if button action is disabled or unknown. */
3021a0e73a12SJung-uk Kim     if (state == ACPI_STATE_UNKNOWN)
3022813d6dcaSNate Lawson 	return;
3023813d6dcaSNate Lawson 
302400a30448SNate Lawson     /* Request that the system prepare to enter the given suspend state. */
30252d0c82e8SJung-uk Kim     ret = acpi_ReqSleepState(sc, state);
302600a30448SNate Lawson     if (ret != 0)
30272d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
30282d0c82e8SJung-uk Kim 	    "request to enter state S%d failed (err %d)\n", state, ret);
3029bee4aa4aSNate Lawson 
30300ae55423SMike Smith     return_VOID;
303115e32d5dSMike Smith }
303215e32d5dSMike Smith 
303315e32d5dSMike Smith static void
303415e32d5dSMike Smith acpi_system_eventhandler_wakeup(void *arg, int state)
303515e32d5dSMike Smith {
3036bee4aa4aSNate Lawson 
3037b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
30380ae55423SMike Smith 
3039bee4aa4aSNate Lawson     /* Currently, nothing to do for wakeup. */
3040cb9b0d80SMike Smith 
30410ae55423SMike Smith     return_VOID;
304215e32d5dSMike Smith }
304315e32d5dSMike Smith 
304415e32d5dSMike Smith /*
304515e32d5dSMike Smith  * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
304615e32d5dSMike Smith  */
304715e32d5dSMike Smith UINT32
304833febf93SNate Lawson acpi_event_power_button_sleep(void *context)
304915e32d5dSMike Smith {
305015e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
305115e32d5dSMike Smith 
3052b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
30530ae55423SMike Smith 
305415e32d5dSMike Smith     EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
30550ae55423SMike Smith 
3056b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
305715e32d5dSMike Smith }
305815e32d5dSMike Smith 
305915e32d5dSMike Smith UINT32
306033febf93SNate Lawson acpi_event_power_button_wake(void *context)
306115e32d5dSMike Smith {
306215e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
306315e32d5dSMike Smith 
3064b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
30650ae55423SMike Smith 
306615e32d5dSMike Smith     EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
30670ae55423SMike Smith 
3068b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
306915e32d5dSMike Smith }
307015e32d5dSMike Smith 
307115e32d5dSMike Smith UINT32
307233febf93SNate Lawson acpi_event_sleep_button_sleep(void *context)
307315e32d5dSMike Smith {
307415e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
307515e32d5dSMike Smith 
3076b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
30770ae55423SMike Smith 
307815e32d5dSMike Smith     EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
30790ae55423SMike Smith 
3080b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
308115e32d5dSMike Smith }
308215e32d5dSMike Smith 
308315e32d5dSMike Smith UINT32
308433febf93SNate Lawson acpi_event_sleep_button_wake(void *context)
308515e32d5dSMike Smith {
308615e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
308715e32d5dSMike Smith 
3088b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
30890ae55423SMike Smith 
309015e32d5dSMike Smith     EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
30910ae55423SMike Smith 
3092b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
309315e32d5dSMike Smith }
309415e32d5dSMike Smith 
309515e32d5dSMike Smith /*
3096bee4aa4aSNate Lawson  * XXX This static buffer is suboptimal.  There is no locking so only
3097bee4aa4aSNate Lawson  * use this for single-threaded callers.
309815e32d5dSMike Smith  */
309915e32d5dSMike Smith char *
310015e32d5dSMike Smith acpi_name(ACPI_HANDLE handle)
310115e32d5dSMike Smith {
3102bee4aa4aSNate Lawson     ACPI_BUFFER buf;
3103bee4aa4aSNate Lawson     static char data[256];
310415e32d5dSMike Smith 
3105bee4aa4aSNate Lawson     buf.Length = sizeof(data);
3106bee4aa4aSNate Lawson     buf.Pointer = data;
3107cb9b0d80SMike Smith 
31080a9a1f44SNate Lawson     if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
3109bee4aa4aSNate Lawson 	return (data);
3110bee4aa4aSNate Lawson     return ("(unknown)");
311115e32d5dSMike Smith }
311215e32d5dSMike Smith 
311315e32d5dSMike Smith /*
311415e32d5dSMike Smith  * Debugging/bug-avoidance.  Avoid trying to fetch info on various
311515e32d5dSMike Smith  * parts of the namespace.
311615e32d5dSMike Smith  */
311715e32d5dSMike Smith int
311815e32d5dSMike Smith acpi_avoid(ACPI_HANDLE handle)
311915e32d5dSMike Smith {
31203c600cfbSJohn Baldwin     char	*cp, *env, *np;
312115e32d5dSMike Smith     int		len;
312215e32d5dSMike Smith 
312315e32d5dSMike Smith     np = acpi_name(handle);
312415e32d5dSMike Smith     if (*np == '\\')
312515e32d5dSMike Smith 	np++;
31263c600cfbSJohn Baldwin     if ((env = getenv("debug.acpi.avoid")) == NULL)
312715e32d5dSMike Smith 	return (0);
312815e32d5dSMike Smith 
3129be2b1797SNate Lawson     /* Scan the avoid list checking for a match */
31303c600cfbSJohn Baldwin     cp = env;
313115e32d5dSMike Smith     for (;;) {
3132bee4aa4aSNate Lawson 	while (*cp != 0 && isspace(*cp))
313315e32d5dSMike Smith 	    cp++;
313415e32d5dSMike Smith 	if (*cp == 0)
313515e32d5dSMike Smith 	    break;
313615e32d5dSMike Smith 	len = 0;
3137bee4aa4aSNate Lawson 	while (cp[len] != 0 && !isspace(cp[len]))
313815e32d5dSMike Smith 	    len++;
3139d786139cSMaxime Henrion 	if (!strncmp(cp, np, len)) {
31403c600cfbSJohn Baldwin 	    freeenv(env);
31410ae55423SMike Smith 	    return(1);
3142d786139cSMaxime Henrion 	}
31430ae55423SMike Smith 	cp += len;
31440ae55423SMike Smith     }
31453c600cfbSJohn Baldwin     freeenv(env);
3146be2b1797SNate Lawson 
31470ae55423SMike Smith     return (0);
31480ae55423SMike Smith }
31490ae55423SMike Smith 
31500ae55423SMike Smith /*
31510ae55423SMike Smith  * Debugging/bug-avoidance.  Disable ACPI subsystem components.
31520ae55423SMike Smith  */
31530ae55423SMike Smith int
31540ae55423SMike Smith acpi_disabled(char *subsys)
31550ae55423SMike Smith {
315678689b15SMaxime Henrion     char	*cp, *env;
31570ae55423SMike Smith     int		len;
31580ae55423SMike Smith 
31593184cf5aSNate Lawson     if ((env = getenv("debug.acpi.disabled")) == NULL)
31600ae55423SMike Smith 	return (0);
31613184cf5aSNate Lawson     if (strcmp(env, "all") == 0) {
316278689b15SMaxime Henrion 	freeenv(env);
31630ae55423SMike Smith 	return (1);
3164d786139cSMaxime Henrion     }
31650ae55423SMike Smith 
31663184cf5aSNate Lawson     /* Scan the disable list, checking for a match. */
316778689b15SMaxime Henrion     cp = env;
31680ae55423SMike Smith     for (;;) {
31693184cf5aSNate Lawson 	while (*cp != '\0' && isspace(*cp))
31700ae55423SMike Smith 	    cp++;
31713184cf5aSNate Lawson 	if (*cp == '\0')
31720ae55423SMike Smith 	    break;
31730ae55423SMike Smith 	len = 0;
31743184cf5aSNate Lawson 	while (cp[len] != '\0' && !isspace(cp[len]))
31750ae55423SMike Smith 	    len++;
31763184cf5aSNate Lawson 	if (strncmp(cp, subsys, len) == 0) {
317778689b15SMaxime Henrion 	    freeenv(env);
317815e32d5dSMike Smith 	    return (1);
3179d786139cSMaxime Henrion 	}
318015e32d5dSMike Smith 	cp += len;
318115e32d5dSMike Smith     }
318278689b15SMaxime Henrion     freeenv(env);
3183be2b1797SNate Lawson 
318415e32d5dSMike Smith     return (0);
318515e32d5dSMike Smith }
318615e32d5dSMike Smith 
318715e32d5dSMike Smith /*
318815e32d5dSMike Smith  * Control interface.
318915e32d5dSMike Smith  *
31900ae55423SMike Smith  * We multiplex ioctls for all participating ACPI devices here.  Individual
3191be2b1797SNate Lawson  * drivers wanting to be accessible via /dev/acpi should use the
3192be2b1797SNate Lawson  * register/deregister interface to make their handlers visible.
319315e32d5dSMike Smith  */
31940ae55423SMike Smith struct acpi_ioctl_hook
31950ae55423SMike Smith {
31960ae55423SMike Smith     TAILQ_ENTRY(acpi_ioctl_hook) link;
31970ae55423SMike Smith     u_long			 cmd;
3198be2b1797SNate Lawson     acpi_ioctl_fn		 fn;
31990ae55423SMike Smith     void			 *arg;
32000ae55423SMike Smith };
32010ae55423SMike Smith 
32020ae55423SMike Smith static TAILQ_HEAD(,acpi_ioctl_hook)	acpi_ioctl_hooks;
32030ae55423SMike Smith static int				acpi_ioctl_hooks_initted;
32040ae55423SMike Smith 
32050ae55423SMike Smith int
3206be2b1797SNate Lawson acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
32070ae55423SMike Smith {
32080ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
32090ae55423SMike Smith 
32100ae55423SMike Smith     if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
32110ae55423SMike Smith 	return (ENOMEM);
32120ae55423SMike Smith     hp->cmd = cmd;
32130ae55423SMike Smith     hp->fn = fn;
32140ae55423SMike Smith     hp->arg = arg;
321515e2f34fSNate Lawson 
321615e2f34fSNate Lawson     ACPI_LOCK(acpi);
32170ae55423SMike Smith     if (acpi_ioctl_hooks_initted == 0) {
32180ae55423SMike Smith 	TAILQ_INIT(&acpi_ioctl_hooks);
32190ae55423SMike Smith 	acpi_ioctl_hooks_initted = 1;
32200ae55423SMike Smith     }
32210ae55423SMike Smith     TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
322215e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
322315e2f34fSNate Lawson 
32240ae55423SMike Smith     return (0);
32250ae55423SMike Smith }
32260ae55423SMike Smith 
32270ae55423SMike Smith void
3228be2b1797SNate Lawson acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
32290ae55423SMike Smith {
32300ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
32310ae55423SMike Smith 
323215e2f34fSNate Lawson     ACPI_LOCK(acpi);
32330ae55423SMike Smith     TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
323415e2f34fSNate Lawson 	if (hp->cmd == cmd && hp->fn == fn)
32350ae55423SMike Smith 	    break;
32360ae55423SMike Smith 
32370ae55423SMike Smith     if (hp != NULL) {
32380ae55423SMike Smith 	TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
32390ae55423SMike Smith 	free(hp, M_ACPIDEV);
32400ae55423SMike Smith     }
324115e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
32420ae55423SMike Smith }
32430ae55423SMike Smith 
324415e32d5dSMike Smith static int
324500b4e54aSWarner Losh acpiopen(struct cdev *dev, int flag, int fmt, struct thread *td)
324615e32d5dSMike Smith {
324715e32d5dSMike Smith     return (0);
324815e32d5dSMike Smith }
324915e32d5dSMike Smith 
325015e32d5dSMike Smith static int
325100b4e54aSWarner Losh acpiclose(struct cdev *dev, int flag, int fmt, struct thread *td)
325215e32d5dSMike Smith {
325315e32d5dSMike Smith     return (0);
325415e32d5dSMike Smith }
325515e32d5dSMike Smith 
325615e32d5dSMike Smith static int
325700b4e54aSWarner Losh acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
325815e32d5dSMike Smith {
325915e32d5dSMike Smith     struct acpi_softc		*sc;
32600ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
3261bee4aa4aSNate Lawson     int				error, state;
326215e32d5dSMike Smith 
3263a2e35898SDavid E. O'Brien     error = 0;
3264a2e35898SDavid E. O'Brien     hp = NULL;
326515e32d5dSMike Smith     sc = dev->si_drv1;
326615e32d5dSMike Smith 
32670ae55423SMike Smith     /*
32680ae55423SMike Smith      * Scan the list of registered ioctls, looking for handlers.
32690ae55423SMike Smith      */
327015e2f34fSNate Lawson     ACPI_LOCK(acpi);
3271bee4aa4aSNate Lawson     if (acpi_ioctl_hooks_initted)
32720ae55423SMike Smith 	TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3273bee4aa4aSNate Lawson 	    if (hp->cmd == cmd)
3274bee4aa4aSNate Lawson 		break;
32750ae55423SMike Smith 	}
327615e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
3277bee4aa4aSNate Lawson     if (hp)
3278bee4aa4aSNate Lawson 	return (hp->fn(cmd, addr, hp->arg));
32790ae55423SMike Smith 
32800ae55423SMike Smith     /*
3281a89fcf28STakanori Watanabe      * Core ioctls are not permitted for non-writable user.
3282a89fcf28STakanori Watanabe      * Currently, other ioctls just fetch information.
3283a89fcf28STakanori Watanabe      * Not changing system behavior.
3284a89fcf28STakanori Watanabe      */
3285be2b1797SNate Lawson     if ((flag & FWRITE) == 0)
3286be2b1797SNate Lawson 	return (EPERM);
3287a89fcf28STakanori Watanabe 
3288be2b1797SNate Lawson     /* Core system ioctls. */
328915e32d5dSMike Smith     switch (cmd) {
329000a30448SNate Lawson     case ACPIIO_REQSLPSTATE:
329100a30448SNate Lawson 	state = *(int *)addr;
329200a30448SNate Lawson 	if (state != ACPI_STATE_S5)
3293a0e73a12SJung-uk Kim 	    return (acpi_ReqSleepState(sc, state));
3294a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n");
3295a0e73a12SJung-uk Kim 	error = EOPNOTSUPP;
329600a30448SNate Lawson 	break;
329700a30448SNate Lawson     case ACPIIO_ACKSLPSTATE:
329800a30448SNate Lawson 	error = *(int *)addr;
329900a30448SNate Lawson 	error = acpi_AckSleepState(sc->acpi_clone, error);
330000a30448SNate Lawson 	break;
330100a30448SNate Lawson     case ACPIIO_SETSLPSTATE:	/* DEPRECATED */
330215e32d5dSMike Smith 	state = *(int *)addr;
3303a0e73a12SJung-uk Kim 	if (state < ACPI_STATE_S0 || state > ACPI_S_STATES_MAX)
3304a0e73a12SJung-uk Kim 	    return (EINVAL);
3305a0e73a12SJung-uk Kim 	if (!acpi_sleep_states[state])
3306a0e73a12SJung-uk Kim 	    return (EOPNOTSUPP);
3307a0e73a12SJung-uk Kim 	if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
3308a0e73a12SJung-uk Kim 	    error = ENXIO;
330915e32d5dSMike Smith 	break;
331015e32d5dSMike Smith     default:
3311bee4aa4aSNate Lawson 	error = ENXIO;
331215e32d5dSMike Smith 	break;
331315e32d5dSMike Smith     }
3314917d44c8SMitsuru IWASAKI 
331515e32d5dSMike Smith     return (error);
331615e32d5dSMike Smith }
331715e32d5dSMike Smith 
33181d073b1dSJohn Baldwin static int
3319a0e73a12SJung-uk Kim acpi_sname2sstate(const char *sname)
3320a0e73a12SJung-uk Kim {
3321a0e73a12SJung-uk Kim     int sstate;
3322a0e73a12SJung-uk Kim 
3323a0e73a12SJung-uk Kim     if (toupper(sname[0]) == 'S') {
3324a0e73a12SJung-uk Kim 	sstate = sname[1] - '0';
3325a0e73a12SJung-uk Kim 	if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5 &&
3326a0e73a12SJung-uk Kim 	    sname[2] == '\0')
3327a0e73a12SJung-uk Kim 	    return (sstate);
3328a0e73a12SJung-uk Kim     } else if (strcasecmp(sname, "NONE") == 0)
3329a0e73a12SJung-uk Kim 	return (ACPI_STATE_UNKNOWN);
3330a0e73a12SJung-uk Kim     return (-1);
3331a0e73a12SJung-uk Kim }
3332a0e73a12SJung-uk Kim 
3333a0e73a12SJung-uk Kim static const char *
3334a0e73a12SJung-uk Kim acpi_sstate2sname(int sstate)
3335a0e73a12SJung-uk Kim {
3336a0e73a12SJung-uk Kim     static const char *snames[] = { "S0", "S1", "S2", "S3", "S4", "S5" };
3337a0e73a12SJung-uk Kim 
3338a0e73a12SJung-uk Kim     if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5)
3339a0e73a12SJung-uk Kim 	return (snames[sstate]);
3340a0e73a12SJung-uk Kim     else if (sstate == ACPI_STATE_UNKNOWN)
3341a0e73a12SJung-uk Kim 	return ("NONE");
3342a0e73a12SJung-uk Kim     return (NULL);
3343a0e73a12SJung-uk Kim }
3344a0e73a12SJung-uk Kim 
3345a0e73a12SJung-uk Kim static int
3346d75de536SMitsuru IWASAKI acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3347d75de536SMitsuru IWASAKI {
3348d75de536SMitsuru IWASAKI     int error;
3349bee4aa4aSNate Lawson     struct sbuf sb;
3350a0e73a12SJung-uk Kim     UINT8 state;
3351d75de536SMitsuru IWASAKI 
3352bee4aa4aSNate Lawson     sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3353a0e73a12SJung-uk Kim     for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
3354a0e73a12SJung-uk Kim 	if (acpi_sleep_states[state])
3355a0e73a12SJung-uk Kim 	    sbuf_printf(&sb, "%s ", acpi_sstate2sname(state));
3356bee4aa4aSNate Lawson     sbuf_trim(&sb);
3357bee4aa4aSNate Lawson     sbuf_finish(&sb);
3358bee4aa4aSNate Lawson     error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3359bee4aa4aSNate Lawson     sbuf_delete(&sb);
3360d75de536SMitsuru IWASAKI     return (error);
3361d75de536SMitsuru IWASAKI }
3362d75de536SMitsuru IWASAKI 
3363d75de536SMitsuru IWASAKI static int
33641d073b1dSJohn Baldwin acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
33651d073b1dSJohn Baldwin {
33661d073b1dSJohn Baldwin     char sleep_state[10];
3367a0e73a12SJung-uk Kim     int error, new_state, old_state;
33681d073b1dSJohn Baldwin 
3369a0e73a12SJung-uk Kim     old_state = *(int *)oidp->oid_arg1;
3370a0e73a12SJung-uk Kim     strlcpy(sleep_state, acpi_sstate2sname(old_state), sizeof(sleep_state));
33711d073b1dSJohn Baldwin     error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
33721d073b1dSJohn Baldwin     if (error == 0 && req->newptr != NULL) {
3373a0e73a12SJung-uk Kim 	new_state = acpi_sname2sstate(sleep_state);
3374a0e73a12SJung-uk Kim 	if (new_state < ACPI_STATE_S1)
3375a0e73a12SJung-uk Kim 	    return (EINVAL);
337654b43614SJung-uk Kim 	if (new_state < ACPI_S_STATE_COUNT && !acpi_sleep_states[new_state])
3377a0e73a12SJung-uk Kim 	    return (EOPNOTSUPP);
3378be2b1797SNate Lawson 	if (new_state != old_state)
3379a0e73a12SJung-uk Kim 	    *(int *)oidp->oid_arg1 = new_state;
33801d073b1dSJohn Baldwin     }
33811d073b1dSJohn Baldwin     return (error);
33821d073b1dSJohn Baldwin }
33831d073b1dSJohn Baldwin 
33849b937d48SNate Lawson /* Inform devctl(4) when we receive a Notify. */
33859b937d48SNate Lawson void
33869b937d48SNate Lawson acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
33879b937d48SNate Lawson {
33889b937d48SNate Lawson     char		notify_buf[16];
33899b937d48SNate Lawson     ACPI_BUFFER		handle_buf;
33909b937d48SNate Lawson     ACPI_STATUS		status;
33919b937d48SNate Lawson 
33929b937d48SNate Lawson     if (subsystem == NULL)
33939b937d48SNate Lawson 	return;
33949b937d48SNate Lawson 
33959b937d48SNate Lawson     handle_buf.Pointer = NULL;
33969b937d48SNate Lawson     handle_buf.Length = ACPI_ALLOCATE_BUFFER;
33979b937d48SNate Lawson     status = AcpiNsHandleToPathname(h, &handle_buf);
33989b937d48SNate Lawson     if (ACPI_FAILURE(status))
33999b937d48SNate Lawson 	return;
34009b937d48SNate Lawson     snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
34019b937d48SNate Lawson     devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
34029b937d48SNate Lawson     AcpiOsFree(handle_buf.Pointer);
34039b937d48SNate Lawson }
34049b937d48SNate Lawson 
340515e32d5dSMike Smith #ifdef ACPI_DEBUG
34060ae55423SMike Smith /*
34070ae55423SMike Smith  * Support for parsing debug options from the kernel environment.
34080ae55423SMike Smith  *
34090ae55423SMike Smith  * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
34100ae55423SMike Smith  * by specifying the names of the bits in the debug.acpi.layer and
34110ae55423SMike Smith  * debug.acpi.level environment variables.  Bits may be unset by
34120ae55423SMike Smith  * prefixing the bit name with !.
34130ae55423SMike Smith  */
341415e32d5dSMike Smith struct debugtag
341515e32d5dSMike Smith {
341615e32d5dSMike Smith     char	*name;
341715e32d5dSMike Smith     UINT32	value;
341815e32d5dSMike Smith };
341915e32d5dSMike Smith 
342015e32d5dSMike Smith static struct debugtag	dbg_layer[] = {
3421c5ba0be4SMike Smith     {"ACPI_UTILITIES",		ACPI_UTILITIES},
3422c5ba0be4SMike Smith     {"ACPI_HARDWARE",		ACPI_HARDWARE},
3423c5ba0be4SMike Smith     {"ACPI_EVENTS",		ACPI_EVENTS},
3424c5ba0be4SMike Smith     {"ACPI_TABLES",		ACPI_TABLES},
3425c5ba0be4SMike Smith     {"ACPI_NAMESPACE",		ACPI_NAMESPACE},
3426c5ba0be4SMike Smith     {"ACPI_PARSER",		ACPI_PARSER},
3427c5ba0be4SMike Smith     {"ACPI_DISPATCHER",		ACPI_DISPATCHER},
3428c5ba0be4SMike Smith     {"ACPI_EXECUTER",		ACPI_EXECUTER},
3429c5ba0be4SMike Smith     {"ACPI_RESOURCES",		ACPI_RESOURCES},
3430d62ab2f4SMitsuru IWASAKI     {"ACPI_CA_DEBUGGER",	ACPI_CA_DEBUGGER},
34314c1cdee6SMike Smith     {"ACPI_OS_SERVICES",	ACPI_OS_SERVICES},
3432d62ab2f4SMitsuru IWASAKI     {"ACPI_CA_DISASSEMBLER",	ACPI_CA_DISASSEMBLER},
3433297835bcSNate Lawson     {"ACPI_ALL_COMPONENTS",	ACPI_ALL_COMPONENTS},
34344c1cdee6SMike Smith 
3435c5ba0be4SMike Smith     {"ACPI_AC_ADAPTER",		ACPI_AC_ADAPTER},
3436c5ba0be4SMike Smith     {"ACPI_BATTERY",		ACPI_BATTERY},
34373184cf5aSNate Lawson     {"ACPI_BUS",		ACPI_BUS},
3438c5ba0be4SMike Smith     {"ACPI_BUTTON",		ACPI_BUTTON},
34393184cf5aSNate Lawson     {"ACPI_EC", 		ACPI_EC},
34403184cf5aSNate Lawson     {"ACPI_FAN",		ACPI_FAN},
34413184cf5aSNate Lawson     {"ACPI_POWERRES",		ACPI_POWERRES},
34424c1cdee6SMike Smith     {"ACPI_PROCESSOR",		ACPI_PROCESSOR},
3443cb9b0d80SMike Smith     {"ACPI_THERMAL",		ACPI_THERMAL},
34443184cf5aSNate Lawson     {"ACPI_TIMER",		ACPI_TIMER},
3445b53f2771SMike Smith     {"ACPI_ALL_DRIVERS",	ACPI_ALL_DRIVERS},
344615e32d5dSMike Smith     {NULL, 0}
344715e32d5dSMike Smith };
344815e32d5dSMike Smith 
344915e32d5dSMike Smith static struct debugtag dbg_level[] = {
34509501b603SJohn Baldwin     {"ACPI_LV_INIT",		ACPI_LV_INIT},
34514c1cdee6SMike Smith     {"ACPI_LV_DEBUG_OBJECT",	ACPI_LV_DEBUG_OBJECT},
34529501b603SJohn Baldwin     {"ACPI_LV_INFO",		ACPI_LV_INFO},
34534c1cdee6SMike Smith     {"ACPI_LV_ALL_EXCEPTIONS",	ACPI_LV_ALL_EXCEPTIONS},
3454d62ab2f4SMitsuru IWASAKI 
3455d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 1 [Standard Trace Level] */
3456297835bcSNate Lawson     {"ACPI_LV_INIT_NAMES",	ACPI_LV_INIT_NAMES},
34574c1cdee6SMike Smith     {"ACPI_LV_PARSE",		ACPI_LV_PARSE},
34584c1cdee6SMike Smith     {"ACPI_LV_LOAD",		ACPI_LV_LOAD},
3459d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_DISPATCH",	ACPI_LV_DISPATCH},
34604c1cdee6SMike Smith     {"ACPI_LV_EXEC",		ACPI_LV_EXEC},
34614c1cdee6SMike Smith     {"ACPI_LV_NAMES",		ACPI_LV_NAMES},
34624c1cdee6SMike Smith     {"ACPI_LV_OPREGION",	ACPI_LV_OPREGION},
34634c1cdee6SMike Smith     {"ACPI_LV_BFIELD",		ACPI_LV_BFIELD},
34644c1cdee6SMike Smith     {"ACPI_LV_TABLES",		ACPI_LV_TABLES},
34654c1cdee6SMike Smith     {"ACPI_LV_VALUES",		ACPI_LV_VALUES},
34664c1cdee6SMike Smith     {"ACPI_LV_OBJECTS",		ACPI_LV_OBJECTS},
34674c1cdee6SMike Smith     {"ACPI_LV_RESOURCES",	ACPI_LV_RESOURCES},
34684c1cdee6SMike Smith     {"ACPI_LV_USER_REQUESTS",	ACPI_LV_USER_REQUESTS},
34694c1cdee6SMike Smith     {"ACPI_LV_PACKAGE",		ACPI_LV_PACKAGE},
3470d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY1",	ACPI_LV_VERBOSITY1},
3471d62ab2f4SMitsuru IWASAKI 
3472d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 2 [Function tracing and memory allocation] */
3473d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_ALLOCATIONS",	ACPI_LV_ALLOCATIONS},
3474d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_FUNCTIONS",	ACPI_LV_FUNCTIONS},
3475d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_OPTIMIZATIONS",	ACPI_LV_OPTIMIZATIONS},
3476d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY2",	ACPI_LV_VERBOSITY2},
34774c1cdee6SMike Smith     {"ACPI_LV_ALL",		ACPI_LV_ALL},
3478d62ab2f4SMitsuru IWASAKI 
3479d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3480d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_MUTEX",		ACPI_LV_MUTEX},
3481d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_THREADS",		ACPI_LV_THREADS},
3482d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_IO",		ACPI_LV_IO},
3483d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_INTERRUPTS",	ACPI_LV_INTERRUPTS},
3484d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY3",	ACPI_LV_VERBOSITY3},
3485d62ab2f4SMitsuru IWASAKI 
3486d62ab2f4SMitsuru IWASAKI     /* Exceptionally verbose output -- also used in the global "DebugLevel"  */
348798479b04SMitsuru IWASAKI     {"ACPI_LV_AML_DISASSEMBLE",	ACPI_LV_AML_DISASSEMBLE},
348898479b04SMitsuru IWASAKI     {"ACPI_LV_VERBOSE_INFO",	ACPI_LV_VERBOSE_INFO},
348998479b04SMitsuru IWASAKI     {"ACPI_LV_FULL_TABLES",	ACPI_LV_FULL_TABLES},
349098479b04SMitsuru IWASAKI     {"ACPI_LV_EVENTS",		ACPI_LV_EVENTS},
349198479b04SMitsuru IWASAKI     {"ACPI_LV_VERBOSE",		ACPI_LV_VERBOSE},
349215e32d5dSMike Smith     {NULL, 0}
349315e32d5dSMike Smith };
349415e32d5dSMike Smith 
349515e32d5dSMike Smith static void
349615e32d5dSMike Smith acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
349715e32d5dSMike Smith {
349815e32d5dSMike Smith     char	*ep;
349915e32d5dSMike Smith     int		i, l;
35000ae55423SMike Smith     int		set;
350115e32d5dSMike Smith 
350215e32d5dSMike Smith     while (*cp) {
350315e32d5dSMike Smith 	if (isspace(*cp)) {
350415e32d5dSMike Smith 	    cp++;
350515e32d5dSMike Smith 	    continue;
350615e32d5dSMike Smith 	}
350715e32d5dSMike Smith 	ep = cp;
350815e32d5dSMike Smith 	while (*ep && !isspace(*ep))
350915e32d5dSMike Smith 	    ep++;
35100ae55423SMike Smith 	if (*cp == '!') {
35110ae55423SMike Smith 	    set = 0;
35120ae55423SMike Smith 	    cp++;
35130ae55423SMike Smith 	    if (cp == ep)
35140ae55423SMike Smith 		continue;
35150ae55423SMike Smith 	} else {
35160ae55423SMike Smith 	    set = 1;
35170ae55423SMike Smith 	}
351815e32d5dSMike Smith 	l = ep - cp;
351915e32d5dSMike Smith 	for (i = 0; tag[i].name != NULL; i++) {
352015e32d5dSMike Smith 	    if (!strncmp(cp, tag[i].name, l)) {
3521be2b1797SNate Lawson 		if (set)
352215e32d5dSMike Smith 		    *flag |= tag[i].value;
3523be2b1797SNate Lawson 		else
35240ae55423SMike Smith 		    *flag &= ~tag[i].value;
352515e32d5dSMike Smith 	    }
352615e32d5dSMike Smith 	}
352715e32d5dSMike Smith 	cp = ep;
352815e32d5dSMike Smith     }
352915e32d5dSMike Smith }
353015e32d5dSMike Smith 
353115e32d5dSMike Smith static void
35322a4ac806SMike Smith acpi_set_debugging(void *junk)
353315e32d5dSMike Smith {
35347e639165SNate Lawson     char	*layer, *level;
353515e32d5dSMike Smith 
35361d7b121cSNate Lawson     if (cold) {
35370ae55423SMike Smith 	AcpiDbgLayer = 0;
35380ae55423SMike Smith 	AcpiDbgLevel = 0;
35391d7b121cSNate Lawson     }
35401d7b121cSNate Lawson 
35417e639165SNate Lawson     layer = getenv("debug.acpi.layer");
35427e639165SNate Lawson     level = getenv("debug.acpi.level");
35437e639165SNate Lawson     if (layer == NULL && level == NULL)
35447e639165SNate Lawson 	return;
35450ae55423SMike Smith 
35467e639165SNate Lawson     printf("ACPI set debug");
35477e639165SNate Lawson     if (layer != NULL) {
35487e639165SNate Lawson 	if (strcmp("NONE", layer) != 0)
35497e639165SNate Lawson 	    printf(" layer '%s'", layer);
35507e639165SNate Lawson 	acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
35517e639165SNate Lawson 	freeenv(layer);
35521d7b121cSNate Lawson     }
35537e639165SNate Lawson     if (level != NULL) {
35547e639165SNate Lawson 	if (strcmp("NONE", level) != 0)
35557e639165SNate Lawson 	    printf(" level '%s'", level);
35567e639165SNate Lawson 	acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
35577e639165SNate Lawson 	freeenv(level);
35587e639165SNate Lawson     }
35597e639165SNate Lawson     printf("\n");
356015e32d5dSMike Smith }
3561bee4aa4aSNate Lawson 
3562be2b1797SNate Lawson SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3563be2b1797SNate Lawson 	NULL);
35641d7b121cSNate Lawson 
35651d7b121cSNate Lawson static int
35661d7b121cSNate Lawson acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
35671d7b121cSNate Lawson {
356854f6bca0SNate Lawson     int		 error, *dbg;
35691d7b121cSNate Lawson     struct	 debugtag *tag;
357054f6bca0SNate Lawson     struct	 sbuf sb;
35711d7b121cSNate Lawson 
357254f6bca0SNate Lawson     if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
357354f6bca0SNate Lawson 	return (ENOMEM);
35741d7b121cSNate Lawson     if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
35751d7b121cSNate Lawson 	tag = &dbg_layer[0];
35761d7b121cSNate Lawson 	dbg = &AcpiDbgLayer;
35771d7b121cSNate Lawson     } else {
35781d7b121cSNate Lawson 	tag = &dbg_level[0];
35791d7b121cSNate Lawson 	dbg = &AcpiDbgLevel;
35801d7b121cSNate Lawson     }
35811d7b121cSNate Lawson 
35821d7b121cSNate Lawson     /* Get old values if this is a get request. */
358315e2f34fSNate Lawson     ACPI_SERIAL_BEGIN(acpi);
35841d7b121cSNate Lawson     if (*dbg == 0) {
358554f6bca0SNate Lawson 	sbuf_cpy(&sb, "NONE");
35861d7b121cSNate Lawson     } else if (req->newptr == NULL) {
35871d7b121cSNate Lawson 	for (; tag->name != NULL; tag++) {
358854f6bca0SNate Lawson 	    if ((*dbg & tag->value) == tag->value)
358954f6bca0SNate Lawson 		sbuf_printf(&sb, "%s ", tag->name);
35901d7b121cSNate Lawson 	}
35911d7b121cSNate Lawson     }
359254f6bca0SNate Lawson     sbuf_trim(&sb);
359354f6bca0SNate Lawson     sbuf_finish(&sb);
35941d7b121cSNate Lawson 
35957e639165SNate Lawson     /* Copy out the old values to the user. */
35967e639165SNate Lawson     error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
359754f6bca0SNate Lawson     sbuf_delete(&sb);
35981d7b121cSNate Lawson 
35991d7b121cSNate Lawson     /* If the user is setting a string, parse it. */
36001d7b121cSNate Lawson     if (error == 0 && req->newptr != NULL) {
36011d7b121cSNate Lawson 	*dbg = 0;
36021d7b121cSNate Lawson 	setenv((char *)oidp->oid_arg1, (char *)req->newptr);
36031d7b121cSNate Lawson 	acpi_set_debugging(NULL);
36041d7b121cSNate Lawson     }
360515e2f34fSNate Lawson     ACPI_SERIAL_END(acpi);
36061d7b121cSNate Lawson 
36071d7b121cSNate Lawson     return (error);
36081d7b121cSNate Lawson }
3609bee4aa4aSNate Lawson 
36101d7b121cSNate Lawson SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
36111d7b121cSNate Lawson 	    "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
36121d7b121cSNate Lawson SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
36131d7b121cSNate Lawson 	    "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3614bee4aa4aSNate Lawson #endif /* ACPI_DEBUG */
3615f9390180SMitsuru IWASAKI 
3616f9390180SMitsuru IWASAKI static int
36172a18c71dSJung-uk Kim acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS)
36182a18c71dSJung-uk Kim {
36192a18c71dSJung-uk Kim 	int	error;
36202a18c71dSJung-uk Kim 	int	old;
36212a18c71dSJung-uk Kim 
36222a18c71dSJung-uk Kim 	old = acpi_debug_objects;
36232a18c71dSJung-uk Kim 	error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req);
36242a18c71dSJung-uk Kim 	if (error != 0 || req->newptr == NULL)
36252a18c71dSJung-uk Kim 		return (error);
36262a18c71dSJung-uk Kim 	if (old == acpi_debug_objects || (old && acpi_debug_objects))
36272a18c71dSJung-uk Kim 		return (0);
36282a18c71dSJung-uk Kim 
36292a18c71dSJung-uk Kim 	ACPI_SERIAL_BEGIN(acpi);
36302a18c71dSJung-uk Kim 	AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
36312a18c71dSJung-uk Kim 	ACPI_SERIAL_END(acpi);
36322a18c71dSJung-uk Kim 
36332a18c71dSJung-uk Kim 	return (0);
36342a18c71dSJung-uk Kim }
36352a18c71dSJung-uk Kim 
36362a18c71dSJung-uk Kim static int
3637ae19af49SJung-uk Kim acpi_parse_interfaces(char *str, struct acpi_interface *iface)
3638ae19af49SJung-uk Kim {
3639ae19af49SJung-uk Kim 	char *p;
3640ae19af49SJung-uk Kim 	size_t len;
3641ae19af49SJung-uk Kim 	int i, j;
3642ae19af49SJung-uk Kim 
3643ae19af49SJung-uk Kim 	p = str;
3644ae19af49SJung-uk Kim 	while (isspace(*p) || *p == ',')
3645ae19af49SJung-uk Kim 		p++;
3646ae19af49SJung-uk Kim 	len = strlen(p);
3647ae19af49SJung-uk Kim 	if (len == 0)
3648ae19af49SJung-uk Kim 		return (0);
3649ae19af49SJung-uk Kim 	p = strdup(p, M_TEMP);
3650ae19af49SJung-uk Kim 	for (i = 0; i < len; i++)
3651ae19af49SJung-uk Kim 		if (p[i] == ',')
3652ae19af49SJung-uk Kim 			p[i] = '\0';
3653ae19af49SJung-uk Kim 	i = j = 0;
3654ae19af49SJung-uk Kim 	while (i < len)
3655ae19af49SJung-uk Kim 		if (isspace(p[i]) || p[i] == '\0')
3656ae19af49SJung-uk Kim 			i++;
3657ae19af49SJung-uk Kim 		else {
3658ae19af49SJung-uk Kim 			i += strlen(p + i) + 1;
3659ae19af49SJung-uk Kim 			j++;
3660ae19af49SJung-uk Kim 		}
3661ae19af49SJung-uk Kim 	if (j == 0) {
3662ae19af49SJung-uk Kim 		free(p, M_TEMP);
3663ae19af49SJung-uk Kim 		return (0);
3664ae19af49SJung-uk Kim 	}
3665ae19af49SJung-uk Kim 	iface->data = malloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK);
3666ae19af49SJung-uk Kim 	iface->num = j;
3667ae19af49SJung-uk Kim 	i = j = 0;
3668ae19af49SJung-uk Kim 	while (i < len)
3669ae19af49SJung-uk Kim 		if (isspace(p[i]) || p[i] == '\0')
3670ae19af49SJung-uk Kim 			i++;
3671ae19af49SJung-uk Kim 		else {
3672ae19af49SJung-uk Kim 			iface->data[j] = p + i;
3673ae19af49SJung-uk Kim 			i += strlen(p + i) + 1;
3674ae19af49SJung-uk Kim 			j++;
3675ae19af49SJung-uk Kim 		}
3676ae19af49SJung-uk Kim 
3677ae19af49SJung-uk Kim 	return (j);
3678ae19af49SJung-uk Kim }
3679ae19af49SJung-uk Kim 
3680ae19af49SJung-uk Kim static void
3681ae19af49SJung-uk Kim acpi_free_interfaces(struct acpi_interface *iface)
3682ae19af49SJung-uk Kim {
3683ae19af49SJung-uk Kim 
3684ae19af49SJung-uk Kim 	free(iface->data[0], M_TEMP);
3685ae19af49SJung-uk Kim 	free(iface->data, M_TEMP);
3686ae19af49SJung-uk Kim }
3687ae19af49SJung-uk Kim 
3688ae19af49SJung-uk Kim static void
3689ae19af49SJung-uk Kim acpi_reset_interfaces(device_t dev)
3690ae19af49SJung-uk Kim {
3691ae19af49SJung-uk Kim 	struct acpi_interface list;
3692ae19af49SJung-uk Kim 	ACPI_STATUS status;
3693ae19af49SJung-uk Kim 	int i;
3694ae19af49SJung-uk Kim 
3695ae19af49SJung-uk Kim 	if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) {
3696ae19af49SJung-uk Kim 		for (i = 0; i < list.num; i++) {
3697ae19af49SJung-uk Kim 			status = AcpiInstallInterface(list.data[i]);
3698ae19af49SJung-uk Kim 			if (ACPI_FAILURE(status))
3699ae19af49SJung-uk Kim 				device_printf(dev,
3700ae19af49SJung-uk Kim 				    "failed to install _OSI(\"%s\"): %s\n",
3701ae19af49SJung-uk Kim 				    list.data[i], AcpiFormatException(status));
3702ae19af49SJung-uk Kim 			else if (bootverbose)
3703ae19af49SJung-uk Kim 				device_printf(dev, "installed _OSI(\"%s\")\n",
3704ae19af49SJung-uk Kim 				    list.data[i]);
3705ae19af49SJung-uk Kim 		}
3706ae19af49SJung-uk Kim 		acpi_free_interfaces(&list);
3707ae19af49SJung-uk Kim 	}
3708ae19af49SJung-uk Kim 	if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) {
3709ae19af49SJung-uk Kim 		for (i = 0; i < list.num; i++) {
3710ae19af49SJung-uk Kim 			status = AcpiRemoveInterface(list.data[i]);
3711ae19af49SJung-uk Kim 			if (ACPI_FAILURE(status))
3712ae19af49SJung-uk Kim 				device_printf(dev,
3713ae19af49SJung-uk Kim 				    "failed to remove _OSI(\"%s\"): %s\n",
3714ae19af49SJung-uk Kim 				    list.data[i], AcpiFormatException(status));
3715ae19af49SJung-uk Kim 			else if (bootverbose)
3716ae19af49SJung-uk Kim 				device_printf(dev, "removed _OSI(\"%s\")\n",
3717ae19af49SJung-uk Kim 				    list.data[i]);
3718ae19af49SJung-uk Kim 		}
3719ae19af49SJung-uk Kim 		acpi_free_interfaces(&list);
3720ae19af49SJung-uk Kim 	}
3721ae19af49SJung-uk Kim }
3722ae19af49SJung-uk Kim 
3723ae19af49SJung-uk Kim static int
3724f9390180SMitsuru IWASAKI acpi_pm_func(u_long cmd, void *arg, ...)
3725f9390180SMitsuru IWASAKI {
3726f9390180SMitsuru IWASAKI 	int	state, acpi_state;
3727f9390180SMitsuru IWASAKI 	int	error;
3728f9390180SMitsuru IWASAKI 	struct	acpi_softc *sc;
3729f9390180SMitsuru IWASAKI 	va_list	ap;
3730f9390180SMitsuru IWASAKI 
3731f9390180SMitsuru IWASAKI 	error = 0;
3732f9390180SMitsuru IWASAKI 	switch (cmd) {
3733f9390180SMitsuru IWASAKI 	case POWER_CMD_SUSPEND:
3734f9390180SMitsuru IWASAKI 		sc = (struct acpi_softc *)arg;
3735f9390180SMitsuru IWASAKI 		if (sc == NULL) {
3736f9390180SMitsuru IWASAKI 			error = EINVAL;
3737f9390180SMitsuru IWASAKI 			goto out;
3738f9390180SMitsuru IWASAKI 		}
3739f9390180SMitsuru IWASAKI 
3740f9390180SMitsuru IWASAKI 		va_start(ap, arg);
3741f9390180SMitsuru IWASAKI 		state = va_arg(ap, int);
3742f9390180SMitsuru IWASAKI 		va_end(ap);
3743f9390180SMitsuru IWASAKI 
3744f9390180SMitsuru IWASAKI 		switch (state) {
3745f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_STANDBY:
3746f9390180SMitsuru IWASAKI 			acpi_state = sc->acpi_standby_sx;
3747f9390180SMitsuru IWASAKI 			break;
3748f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_SUSPEND:
3749f9390180SMitsuru IWASAKI 			acpi_state = sc->acpi_suspend_sx;
3750f9390180SMitsuru IWASAKI 			break;
3751f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_HIBERNATE:
3752f9390180SMitsuru IWASAKI 			acpi_state = ACPI_STATE_S4;
3753f9390180SMitsuru IWASAKI 			break;
3754f9390180SMitsuru IWASAKI 		default:
3755f9390180SMitsuru IWASAKI 			error = EINVAL;
3756f9390180SMitsuru IWASAKI 			goto out;
3757f9390180SMitsuru IWASAKI 		}
3758f9390180SMitsuru IWASAKI 
375900a30448SNate Lawson 		if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
376000a30448SNate Lawson 			error = ENXIO;
3761f9390180SMitsuru IWASAKI 		break;
3762f9390180SMitsuru IWASAKI 	default:
3763f9390180SMitsuru IWASAKI 		error = EINVAL;
3764f9390180SMitsuru IWASAKI 		goto out;
3765f9390180SMitsuru IWASAKI 	}
3766f9390180SMitsuru IWASAKI 
3767f9390180SMitsuru IWASAKI out:
3768f9390180SMitsuru IWASAKI 	return (error);
3769f9390180SMitsuru IWASAKI }
3770f9390180SMitsuru IWASAKI 
3771f9390180SMitsuru IWASAKI static void
3772f9390180SMitsuru IWASAKI acpi_pm_register(void *arg)
3773f9390180SMitsuru IWASAKI {
3774be2b1797SNate Lawson     if (!cold || resource_disabled("acpi", 0))
37756c407052SMitsuru IWASAKI 	return;
3776f9390180SMitsuru IWASAKI 
3777f9390180SMitsuru IWASAKI     power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3778f9390180SMitsuru IWASAKI }
3779f9390180SMitsuru IWASAKI 
3780f9390180SMitsuru IWASAKI SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);
3781