xref: /freebsd/sys/dev/acpica/acpi.c (revision 5f3dd91a8fecd8d35043d81f1c47c89482b93104)
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"
3462d70a81SJohn Baldwin #include "opt_device_numa.h"
3562d70a81SJohn Baldwin 
3615e32d5dSMike Smith #include <sys/param.h>
3715e32d5dSMike Smith #include <sys/kernel.h>
38fb919e4dSMark Murray #include <sys/proc.h>
39a89fcf28STakanori Watanabe #include <sys/fcntl.h>
4015e32d5dSMike Smith #include <sys/malloc.h>
41fe12f24bSPoul-Henning Kamp #include <sys/module.h>
4215e32d5dSMike Smith #include <sys/bus.h>
4315e32d5dSMike Smith #include <sys/conf.h>
4415e32d5dSMike Smith #include <sys/ioccom.h>
4515e32d5dSMike Smith #include <sys/reboot.h>
4615e32d5dSMike Smith #include <sys/sysctl.h>
4715e32d5dSMike Smith #include <sys/ctype.h>
481611ea87SMitsuru IWASAKI #include <sys/linker.h>
49f9390180SMitsuru IWASAKI #include <sys/power.h>
5054f6bca0SNate Lawson #include <sys/sbuf.h>
51c66d2b38SJung-uk Kim #include <sys/sched.h>
52eeb3a05fSNate Lawson #include <sys/smp.h>
53c66d2b38SJung-uk Kim #include <sys/timetc.h>
5415e32d5dSMike Smith 
55d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
56d320e05cSJohn Baldwin #include <machine/pci_cfgreg.h>
57d320e05cSJohn Baldwin #endif
5815e32d5dSMike Smith #include <machine/resource.h>
59dc750869SNate Lawson #include <machine/bus.h>
60dc750869SNate Lawson #include <sys/rman.h>
61bc0f2195SMike Smith #include <isa/isavar.h>
62c796e27bSNate Lawson #include <isa/pnpvar.h>
63bc0f2195SMike Smith 
64129d3046SJung-uk Kim #include <contrib/dev/acpica/include/acpi.h>
65129d3046SJung-uk Kim #include <contrib/dev/acpica/include/accommon.h>
66129d3046SJung-uk Kim #include <contrib/dev/acpica/include/acnamesp.h>
67129d3046SJung-uk Kim 
6815e32d5dSMike Smith #include <dev/acpica/acpivar.h>
6915e32d5dSMike Smith #include <dev/acpica/acpiio.h>
7015e32d5dSMike Smith 
712be4e471SJung-uk Kim #include <vm/vm_param.h>
722be4e471SJung-uk Kim 
73d745c852SEd Schouten static MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
7415e32d5dSMike Smith 
75be2b1797SNate Lawson /* Hooks for the ACPI CA debugging infrastructure */
76cb9b0d80SMike Smith #define _COMPONENT	ACPI_BUS
77b53f2771SMike Smith ACPI_MODULE_NAME("ACPI")
780ae55423SMike Smith 
7915e32d5dSMike Smith static d_open_t		acpiopen;
8015e32d5dSMike Smith static d_close_t	acpiclose;
8115e32d5dSMike Smith static d_ioctl_t	acpiioctl;
8215e32d5dSMike Smith 
8315e32d5dSMike Smith static struct cdevsw acpi_cdevsw = {
84dc08ffecSPoul-Henning Kamp 	.d_version =	D_VERSION,
857ac40f5fSPoul-Henning Kamp 	.d_open =	acpiopen,
867ac40f5fSPoul-Henning Kamp 	.d_close =	acpiclose,
877ac40f5fSPoul-Henning Kamp 	.d_ioctl =	acpiioctl,
887ac40f5fSPoul-Henning Kamp 	.d_name =	"acpi",
8915e32d5dSMike Smith };
9015e32d5dSMike Smith 
91ae19af49SJung-uk Kim struct acpi_interface {
92ae19af49SJung-uk Kim 	ACPI_STRING	*data;
93ae19af49SJung-uk Kim 	int		num;
94ae19af49SJung-uk Kim };
95ae19af49SJung-uk Kim 
96346eda4fSNate Lawson /* Global mutex for locking access to the ACPI subsystem. */
97cb9b0d80SMike Smith struct mtx	acpi_mutex;
98fadf3fb9SJohn Baldwin struct callout	acpi_sleep_timer;
99cb9b0d80SMike Smith 
10089fb5af8SNate Lawson /* Bitmap of device quirks. */
10189fb5af8SNate Lawson int		acpi_quirks;
10289fb5af8SNate Lawson 
103a0e73a12SJung-uk Kim /* Supported sleep states. */
104a0e73a12SJung-uk Kim static BOOLEAN	acpi_sleep_states[ACPI_S_STATE_COUNT];
105a0e73a12SJung-uk Kim 
10664de8019SJohn Baldwin static void	acpi_lookup(void *arg, const char *name, device_t *dev);
1076d63101aSMike Smith static int	acpi_modevent(struct module *mod, int event, void *junk);
10815e32d5dSMike Smith static int	acpi_probe(device_t dev);
10915e32d5dSMike Smith static int	acpi_attach(device_t dev);
11010ce62b9SNate Lawson static int	acpi_suspend(device_t dev);
11110ce62b9SNate Lawson static int	acpi_resume(device_t dev);
112169b539aSNate Lawson static int	acpi_shutdown(device_t dev);
1133d844eddSAndriy Gapon static device_t	acpi_add_child(device_t bus, u_int order, const char *name,
114be2b1797SNate Lawson 			int unit);
11515e32d5dSMike Smith static int	acpi_print_child(device_t bus, device_t child);
11610ce62b9SNate Lawson static void	acpi_probe_nomatch(device_t bus, device_t child);
11710ce62b9SNate Lawson static void	acpi_driver_added(device_t dev, driver_t *driver);
118be2b1797SNate Lawson static int	acpi_read_ivar(device_t dev, device_t child, int index,
119be2b1797SNate Lawson 			uintptr_t *result);
120be2b1797SNate Lawson static int	acpi_write_ivar(device_t dev, device_t child, int index,
121be2b1797SNate Lawson 			uintptr_t value);
12291233413SNate Lawson static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
123ea233199SJohn Baldwin static void	acpi_reserve_resources(device_t dev);
124adad4744SNate Lawson static int	acpi_sysres_alloc(device_t dev);
125ea233199SJohn Baldwin static int	acpi_set_resource(device_t dev, device_t child, int type,
1262dd1bdf1SJustin Hibbits 			int rid, rman_res_t start, rman_res_t count);
127be2b1797SNate Lawson static struct resource *acpi_alloc_resource(device_t bus, device_t child,
1282dd1bdf1SJustin Hibbits 			int type, int *rid, rman_res_t start, rman_res_t end,
1292dd1bdf1SJustin Hibbits 			rman_res_t count, u_int flags);
130049dc0d1SJohn Baldwin static int	acpi_adjust_resource(device_t bus, device_t child, int type,
1312dd1bdf1SJustin Hibbits 			struct resource *r, rman_res_t start, rman_res_t end);
132be2b1797SNate Lawson static int	acpi_release_resource(device_t bus, device_t child, int type,
133be2b1797SNate Lawson 			int rid, struct resource *r);
1348b28b622SNate Lawson static void	acpi_delete_resource(device_t bus, device_t child, int type,
1358b28b622SNate Lawson 		    int rid);
1361e4925e8SNate Lawson static uint32_t	acpi_isa_get_logicalid(device_t dev);
1371e4925e8SNate Lawson static int	acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
138ce619b2eSNate Lawson static char	*acpi_device_id_probe(device_t bus, device_t dev, char **ids);
139ce619b2eSNate Lawson static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
140ce619b2eSNate Lawson 		    ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
141ce619b2eSNate Lawson 		    ACPI_BUFFER *ret);
142df8d2a32SNate Lawson static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
143df8d2a32SNate Lawson 		    void *context, void **retval);
144df8d2a32SNate Lawson static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
145df8d2a32SNate Lawson 		    int max_depth, acpi_scan_cb_t user_fn, void *arg);
146a7a3177fSJung-uk Kim static int	acpi_set_powerstate(device_t child, int state);
147be2b1797SNate Lawson static int	acpi_isa_pnp_probe(device_t bus, device_t child,
148be2b1797SNate Lawson 		    struct isa_pnp_id *ids);
14915e32d5dSMike Smith static void	acpi_probe_children(device_t bus);
150d227204dSJohn Baldwin static void	acpi_probe_order(ACPI_HANDLE handle, int *order);
151be2b1797SNate Lawson static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
152be2b1797SNate Lawson 		    void *context, void **status);
153a0e73a12SJung-uk Kim static void	acpi_sleep_enable(void *arg);
154a0e73a12SJung-uk Kim static ACPI_STATUS acpi_sleep_disable(struct acpi_softc *sc);
15500a30448SNate Lawson static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
15615e32d5dSMike Smith static void	acpi_shutdown_final(void *arg, int howto);
15713d4f7baSMitsuru IWASAKI static void	acpi_enable_fixed_events(struct acpi_softc *sc);
158183c8af3SJohn Baldwin static BOOLEAN	acpi_has_hid(ACPI_HANDLE handle);
159a0a15716SJung-uk Kim static void	acpi_resync_clock(struct acpi_softc *sc);
160d4b9ff91SNate Lawson static int	acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
161d4b9ff91SNate Lawson static int	acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
162d4b9ff91SNate Lawson static int	acpi_wake_prep_walk(int sstate);
16388a79fc0SNate Lawson static int	acpi_wake_sysctl_walk(device_t dev);
16488a79fc0SNate Lawson static int	acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
16515e32d5dSMike Smith static void	acpi_system_eventhandler_sleep(void *arg, int state);
16615e32d5dSMike Smith static void	acpi_system_eventhandler_wakeup(void *arg, int state);
167a0e73a12SJung-uk Kim static int	acpi_sname2sstate(const char *sname);
168a0e73a12SJung-uk Kim static const char *acpi_sstate2sname(int sstate);
169d75de536SMitsuru IWASAKI static int	acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
1701d073b1dSJohn Baldwin static int	acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
1712a18c71dSJung-uk Kim static int	acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS);
172f9390180SMitsuru IWASAKI static int	acpi_pm_func(u_long cmd, void *arg, ...);
173879d6c23STakanori Watanabe static int	acpi_child_location_str_method(device_t acdev, device_t child,
174879d6c23STakanori Watanabe 					       char *buf, size_t buflen);
175879d6c23STakanori Watanabe static int	acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
176879d6c23STakanori Watanabe 					      char *buf, size_t buflen);
177d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
178d320e05cSJohn Baldwin static void	acpi_enable_pcie(void);
179d320e05cSJohn Baldwin #endif
1800d484d24SJohn Baldwin static void	acpi_hint_device_unit(device_t acdev, device_t child,
1810d484d24SJohn Baldwin 		    const char *name, int *unitp);
182ae19af49SJung-uk Kim static void	acpi_reset_interfaces(device_t dev);
183879d6c23STakanori Watanabe 
18415e32d5dSMike Smith static device_method_t acpi_methods[] = {
18515e32d5dSMike Smith     /* Device interface */
18615e32d5dSMike Smith     DEVMETHOD(device_probe,		acpi_probe),
18715e32d5dSMike Smith     DEVMETHOD(device_attach,		acpi_attach),
188169b539aSNate Lawson     DEVMETHOD(device_shutdown,		acpi_shutdown),
18956a70eadSNate Lawson     DEVMETHOD(device_detach,		bus_generic_detach),
19010ce62b9SNate Lawson     DEVMETHOD(device_suspend,		acpi_suspend),
19110ce62b9SNate Lawson     DEVMETHOD(device_resume,		acpi_resume),
19215e32d5dSMike Smith 
19315e32d5dSMike Smith     /* Bus interface */
19415e32d5dSMike Smith     DEVMETHOD(bus_add_child,		acpi_add_child),
19515e32d5dSMike Smith     DEVMETHOD(bus_print_child,		acpi_print_child),
19610ce62b9SNate Lawson     DEVMETHOD(bus_probe_nomatch,	acpi_probe_nomatch),
19710ce62b9SNate Lawson     DEVMETHOD(bus_driver_added,		acpi_driver_added),
19815e32d5dSMike Smith     DEVMETHOD(bus_read_ivar,		acpi_read_ivar),
19915e32d5dSMike Smith     DEVMETHOD(bus_write_ivar,		acpi_write_ivar),
20091233413SNate Lawson     DEVMETHOD(bus_get_resource_list,	acpi_get_rlist),
201ea233199SJohn Baldwin     DEVMETHOD(bus_set_resource,		acpi_set_resource),
20291233413SNate Lawson     DEVMETHOD(bus_get_resource,		bus_generic_rl_get_resource),
20315e32d5dSMike Smith     DEVMETHOD(bus_alloc_resource,	acpi_alloc_resource),
204049dc0d1SJohn Baldwin     DEVMETHOD(bus_adjust_resource,	acpi_adjust_resource),
20515e32d5dSMike Smith     DEVMETHOD(bus_release_resource,	acpi_release_resource),
2068b28b622SNate Lawson     DEVMETHOD(bus_delete_resource,	acpi_delete_resource),
207879d6c23STakanori Watanabe     DEVMETHOD(bus_child_pnpinfo_str,	acpi_child_pnpinfo_str_method),
208879d6c23STakanori Watanabe     DEVMETHOD(bus_child_location_str,	acpi_child_location_str_method),
20915e32d5dSMike Smith     DEVMETHOD(bus_activate_resource,	bus_generic_activate_resource),
21015e32d5dSMike Smith     DEVMETHOD(bus_deactivate_resource,	bus_generic_deactivate_resource),
21115e32d5dSMike Smith     DEVMETHOD(bus_setup_intr,		bus_generic_setup_intr),
21215e32d5dSMike Smith     DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),
2130d484d24SJohn Baldwin     DEVMETHOD(bus_hint_device_unit,	acpi_hint_device_unit),
214ffcf962dSAdrian Chadd     DEVMETHOD(bus_get_domain,		acpi_get_domain),
21515e32d5dSMike Smith 
216ce619b2eSNate Lawson     /* ACPI bus */
217ce619b2eSNate Lawson     DEVMETHOD(acpi_id_probe,		acpi_device_id_probe),
218ce619b2eSNate Lawson     DEVMETHOD(acpi_evaluate_object,	acpi_device_eval_obj),
21910ce62b9SNate Lawson     DEVMETHOD(acpi_pwr_for_sleep,	acpi_device_pwr_for_sleep),
220df8d2a32SNate Lawson     DEVMETHOD(acpi_scan_children,	acpi_device_scan_children),
221ce619b2eSNate Lawson 
222bc0f2195SMike Smith     /* ISA emulation */
223bc0f2195SMike Smith     DEVMETHOD(isa_pnp_probe,		acpi_isa_pnp_probe),
224bc0f2195SMike Smith 
22561bfd867SSofian Brabez     DEVMETHOD_END
22615e32d5dSMike Smith };
22715e32d5dSMike Smith 
22815e32d5dSMike Smith static driver_t acpi_driver = {
22915e32d5dSMike Smith     "acpi",
23015e32d5dSMike Smith     acpi_methods,
23115e32d5dSMike Smith     sizeof(struct acpi_softc),
23215e32d5dSMike Smith };
23315e32d5dSMike Smith 
2343273b005SMike Smith static devclass_t acpi_devclass;
2356d63101aSMike Smith DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
236a4ecd543SNate Lawson MODULE_VERSION(acpi, 1);
23715e32d5dSMike Smith 
23815e2f34fSNate Lawson ACPI_SERIAL_DECL(acpi, "ACPI root bus");
23915e2f34fSNate Lawson 
240adad4744SNate Lawson /* Local pools for managing system resources for ACPI child devices. */
241adad4744SNate Lawson static struct rman acpi_rman_io, acpi_rman_mem;
242adad4744SNate Lawson 
243bee4aa4aSNate Lawson #define ACPI_MINIMUM_AWAKETIME	5
244bee4aa4aSNate Lawson 
2455217af30SJohn Baldwin /* Holds the description of the acpi0 device. */
2465217af30SJohn Baldwin static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
2475217af30SJohn Baldwin 
248197b4dccSNate Lawson SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
2491d7b121cSNate Lawson static char acpi_ca_version[12];
2501d7b121cSNate Lawson SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
2511d7b121cSNate Lawson 	      acpi_ca_version, 0, "Version of Intel ACPI-CA");
25215e32d5dSMike Smith 
25315e32d5dSMike Smith /*
254ae19af49SJung-uk Kim  * Allow overriding _OSI methods.
255ae19af49SJung-uk Kim  */
256ae19af49SJung-uk Kim static char acpi_install_interface[256];
257ae19af49SJung-uk Kim TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface,
258ae19af49SJung-uk Kim     sizeof(acpi_install_interface));
259ae19af49SJung-uk Kim static char acpi_remove_interface[256];
260ae19af49SJung-uk Kim TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface,
261ae19af49SJung-uk Kim     sizeof(acpi_remove_interface));
262ae19af49SJung-uk Kim 
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 
276313a0c13SJung-uk Kim /* Ignore register widths set by FADT and use default widths instead. */
277313a0c13SJung-uk Kim static int acpi_ignore_reg_width = 1;
278313a0c13SJung-uk Kim TUNABLE_INT("debug.acpi.default_register_width", &acpi_ignore_reg_width);
279313a0c13SJung-uk Kim SYSCTL_INT(_debug_acpi, OID_AUTO, default_register_width, CTLFLAG_RDTUN,
280313a0c13SJung-uk Kim     &acpi_ignore_reg_width, 1, "Ignore register widths set by FADT");
281313a0c13SJung-uk Kim 
282ebbed20dSAndriy Gapon #ifdef __amd64__
2830755473bSJung-uk Kim /* Reset system clock while resuming.  XXX Remove once tested. */
2840755473bSJung-uk Kim static int acpi_reset_clock = 1;
2850755473bSJung-uk Kim TUNABLE_INT("debug.acpi.reset_clock", &acpi_reset_clock);
2860755473bSJung-uk Kim SYSCTL_INT(_debug_acpi, OID_AUTO, reset_clock, CTLFLAG_RW,
2870755473bSJung-uk Kim     &acpi_reset_clock, 1, "Reset system clock while resuming.");
288a0a15716SJung-uk Kim #endif
2890755473bSJung-uk Kim 
29039da3eb3SNate Lawson /* Allow users to override quirks. */
29139da3eb3SNate Lawson TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
29239da3eb3SNate Lawson 
29393bfd059SNate Lawson static int acpi_susp_bounce;
29493bfd059SNate Lawson SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
29593bfd059SNate Lawson     &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
29693bfd059SNate Lawson 
297c9b8d77dSNate Lawson /*
2986d63101aSMike Smith  * ACPI can only be loaded as a module by the loader; activating it after
2996d63101aSMike Smith  * system bootstrap time is not useful, and can be fatal to the system.
3008c0879b6SJohn Baldwin  * It also cannot be unloaded, since the entire system bus hierarchy hangs
301be2b1797SNate Lawson  * off it.
3026d63101aSMike Smith  */
3036d63101aSMike Smith static int
3046d63101aSMike Smith acpi_modevent(struct module *mod, int event, void *junk)
3056d63101aSMike Smith {
3066d63101aSMike Smith     switch (event) {
3076d63101aSMike Smith     case MOD_LOAD:
30887b45ed5SMitsuru IWASAKI 	if (!cold) {
30987b45ed5SMitsuru IWASAKI 	    printf("The ACPI driver cannot be loaded after boot.\n");
3106d63101aSMike Smith 	    return (EPERM);
31187b45ed5SMitsuru IWASAKI 	}
3126d63101aSMike Smith 	break;
3136d63101aSMike Smith     case MOD_UNLOAD:
314f9390180SMitsuru IWASAKI 	if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
3156d63101aSMike Smith 	    return (EBUSY);
316f9390180SMitsuru IWASAKI 	break;
3176d63101aSMike Smith     default:
3186d63101aSMike Smith 	break;
3196d63101aSMike Smith     }
3206d63101aSMike Smith     return (0);
3216d63101aSMike Smith }
3226d63101aSMike Smith 
3236d63101aSMike Smith /*
324bbc2815cSJohn Baldwin  * Perform early initialization.
32515e32d5dSMike Smith  */
326bbc2815cSJohn Baldwin ACPI_STATUS
327bbc2815cSJohn Baldwin acpi_Startup(void)
32815e32d5dSMike Smith {
32989fb5af8SNate Lawson     static int started = 0;
3302be4e471SJung-uk Kim     ACPI_STATUS status;
3312be4e471SJung-uk Kim     int val;
33215e32d5dSMike Smith 
3331b8c233dSPeter Pentchev     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3341b8c233dSPeter Pentchev 
335bee4aa4aSNate Lawson     /* Only run the startup code once.  The MADT driver also calls this. */
336bbc2815cSJohn Baldwin     if (started)
3372be4e471SJung-uk Kim 	return_VALUE (AE_OK);
338bbc2815cSJohn Baldwin     started = 1;
33915e32d5dSMike Smith 
340413081d7SNate Lawson     /*
3412be4e471SJung-uk Kim      * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
3422be4e471SJung-uk Kim      * if more tables exist.
343413081d7SNate Lawson      */
3442be4e471SJung-uk Kim     if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
3452be4e471SJung-uk Kim 	printf("ACPI: Table initialisation failed: %s\n",
3462be4e471SJung-uk Kim 	    AcpiFormatException(status));
3472be4e471SJung-uk Kim 	return_VALUE (status);
34815e32d5dSMike Smith     }
3493184cf5aSNate Lawson 
35089fb5af8SNate Lawson     /* Set up any quirks we have for this system. */
3512be4e471SJung-uk Kim     if (acpi_quirks == ACPI_Q_OK)
35289fb5af8SNate Lawson 	acpi_table_quirks(&acpi_quirks);
35389fb5af8SNate Lawson 
35439da3eb3SNate Lawson     /* If the user manually set the disabled hint to 0, force-enable ACPI. */
35589fb5af8SNate Lawson     if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
35689fb5af8SNate Lawson 	acpi_quirks &= ~ACPI_Q_BROKEN;
35789fb5af8SNate Lawson     if (acpi_quirks & ACPI_Q_BROKEN) {
35889fb5af8SNate Lawson 	printf("ACPI disabled by blacklist.  Contact your BIOS vendor.\n");
3592be4e471SJung-uk Kim 	status = AE_SUPPORT;
36089fb5af8SNate Lawson     }
3613184cf5aSNate Lawson 
3622be4e471SJung-uk Kim     return_VALUE (status);
363bbc2815cSJohn Baldwin }
364bbc2815cSJohn Baldwin 
365bbc2815cSJohn Baldwin /*
3665217af30SJohn Baldwin  * Detect ACPI and perform early initialisation.
367bbc2815cSJohn Baldwin  */
3685217af30SJohn Baldwin int
3695217af30SJohn Baldwin acpi_identify(void)
370bbc2815cSJohn Baldwin {
3715217af30SJohn Baldwin     ACPI_TABLE_RSDP	*rsdp;
3725217af30SJohn Baldwin     ACPI_TABLE_HEADER	*rsdt;
3735217af30SJohn Baldwin     ACPI_PHYSICAL_ADDRESS paddr;
3745217af30SJohn Baldwin     struct sbuf		sb;
375bbc2815cSJohn Baldwin 
376bbc2815cSJohn Baldwin     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
377bbc2815cSJohn Baldwin 
378bbc2815cSJohn Baldwin     if (!cold)
3795217af30SJohn Baldwin 	return (ENXIO);
380bbc2815cSJohn Baldwin 
381a8de37b0SEitan Adler     /* Check that we haven't been disabled with a hint. */
382a8de37b0SEitan Adler     if (resource_disabled("acpi", 0))
383a8de37b0SEitan Adler 	return (ENXIO);
384a8de37b0SEitan Adler 
3855217af30SJohn Baldwin     /* Check for other PM systems. */
3865217af30SJohn Baldwin     if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
3875217af30SJohn Baldwin 	power_pm_get_type() != POWER_PM_TYPE_ACPI) {
3885217af30SJohn Baldwin 	printf("ACPI identify failed, other PM system enabled.\n");
3895217af30SJohn Baldwin 	return (ENXIO);
3905217af30SJohn Baldwin     }
3914b1ff978SMark Santcroos 
3922be4e471SJung-uk Kim     /* Initialize root tables. */
3932be4e471SJung-uk Kim     if (ACPI_FAILURE(acpi_Startup())) {
3942be4e471SJung-uk Kim 	printf("ACPI: Try disabling either ACPI or apic support.\n");
3955217af30SJohn Baldwin 	return (ENXIO);
3962be4e471SJung-uk Kim     }
39715e32d5dSMike Smith 
3985217af30SJohn Baldwin     if ((paddr = AcpiOsGetRootPointer()) == 0 ||
3995217af30SJohn Baldwin 	(rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
4005217af30SJohn Baldwin 	return (ENXIO);
4015217af30SJohn Baldwin     if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
4025217af30SJohn Baldwin 	paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
4035217af30SJohn Baldwin     else
4045217af30SJohn Baldwin 	paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
4055217af30SJohn Baldwin     AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
4065217af30SJohn Baldwin 
4075217af30SJohn Baldwin     if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
4085217af30SJohn Baldwin 	return (ENXIO);
4095217af30SJohn Baldwin     sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN);
4105217af30SJohn Baldwin     sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
4115217af30SJohn Baldwin     sbuf_trim(&sb);
4125217af30SJohn Baldwin     sbuf_putc(&sb, ' ');
4135217af30SJohn Baldwin     sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
4145217af30SJohn Baldwin     sbuf_trim(&sb);
4155217af30SJohn Baldwin     sbuf_finish(&sb);
4165217af30SJohn Baldwin     sbuf_delete(&sb);
4175217af30SJohn Baldwin     AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
4185217af30SJohn Baldwin 
4195217af30SJohn Baldwin     snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
4205217af30SJohn Baldwin 
4215217af30SJohn Baldwin     return (0);
42215e32d5dSMike Smith }
42315e32d5dSMike Smith 
42415e32d5dSMike Smith /*
425bee4aa4aSNate Lawson  * Fetch some descriptive data from ACPI to put in our attach message.
42615e32d5dSMike Smith  */
42715e32d5dSMike Smith static int
42815e32d5dSMike Smith acpi_probe(device_t dev)
42915e32d5dSMike Smith {
43015e32d5dSMike Smith 
431b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
432f9390180SMitsuru IWASAKI 
4335217af30SJohn Baldwin     device_set_desc(dev, acpi_desc);
434bee4aa4aSNate Lawson 
435feeec74dSNathan Whitehorn     return_VALUE (BUS_PROBE_NOWILDCARD);
43615e32d5dSMike Smith }
43715e32d5dSMike Smith 
43815e32d5dSMike Smith static int
43915e32d5dSMike Smith acpi_attach(device_t dev)
44015e32d5dSMike Smith {
44115e32d5dSMike Smith     struct acpi_softc	*sc;
442cb9b0d80SMike Smith     ACPI_STATUS		status;
443ea27c63eSNate Lawson     int			error, state;
44432d18aa5SMike Smith     UINT32		flags;
445ea27c63eSNate Lawson     UINT8		TypeA, TypeB;
446498d464fSMitsuru IWASAKI     char		*env;
44715e32d5dSMike Smith 
448b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
449bee4aa4aSNate Lawson 
45015e32d5dSMike Smith     sc = device_get_softc(dev);
45115e32d5dSMike Smith     sc->acpi_dev = dev;
452fd90e2edSJung-uk Kim     callout_init(&sc->susp_force_to, 1);
45315e32d5dSMike Smith 
4542be4e471SJung-uk Kim     error = ENXIO;
4552be4e471SJung-uk Kim 
45691233413SNate Lawson     /* Initialize resource manager. */
45791233413SNate Lawson     acpi_rman_io.rm_type = RMAN_ARRAY;
45891233413SNate Lawson     acpi_rman_io.rm_start = 0;
45991233413SNate Lawson     acpi_rman_io.rm_end = 0xffff;
4600bba6acfSJohn Baldwin     acpi_rman_io.rm_descr = "ACPI I/O ports";
46191233413SNate Lawson     if (rman_init(&acpi_rman_io) != 0)
46291233413SNate Lawson 	panic("acpi rman_init IO ports failed");
46391233413SNate Lawson     acpi_rman_mem.rm_type = RMAN_ARRAY;
4640bba6acfSJohn Baldwin     acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
46591233413SNate Lawson     if (rman_init(&acpi_rman_mem) != 0)
46691233413SNate Lawson 	panic("acpi rman_init memory failed");
46791233413SNate Lawson 
4682be4e471SJung-uk Kim     /* Initialise the ACPI mutex */
4692be4e471SJung-uk Kim     mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
4702be4e471SJung-uk Kim 
4712be4e471SJung-uk Kim     /*
4722be4e471SJung-uk Kim      * Set the globals from our tunables.  This is needed because ACPI-CA
4732be4e471SJung-uk Kim      * uses UINT8 for some values and we have no tunable_byte.
4742be4e471SJung-uk Kim      */
4752a18c71dSJung-uk Kim     AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE;
4762a18c71dSJung-uk Kim     AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
477313a0c13SJung-uk Kim     AcpiGbl_UseDefaultRegisterWidths = acpi_ignore_reg_width ? TRUE : FALSE;
4782a18c71dSJung-uk Kim 
4792a18c71dSJung-uk Kim #ifndef ACPI_DEBUG
4802a18c71dSJung-uk Kim     /*
4812a18c71dSJung-uk Kim      * Disable all debugging layers and levels.
4822a18c71dSJung-uk Kim      */
4832a18c71dSJung-uk Kim     AcpiDbgLayer = 0;
4842a18c71dSJung-uk Kim     AcpiDbgLevel = 0;
4852a18c71dSJung-uk Kim #endif
4862be4e471SJung-uk Kim 
4872be4e471SJung-uk Kim     /* Start up the ACPI CA subsystem. */
4882be4e471SJung-uk Kim     status = AcpiInitializeSubsystem();
4892be4e471SJung-uk Kim     if (ACPI_FAILURE(status)) {
4902be4e471SJung-uk Kim 	device_printf(dev, "Could not initialize Subsystem: %s\n",
4912be4e471SJung-uk Kim 		      AcpiFormatException(status));
4922be4e471SJung-uk Kim 	goto out;
4932be4e471SJung-uk Kim     }
4942be4e471SJung-uk Kim 
495ae19af49SJung-uk Kim     /* Override OS interfaces if the user requested. */
496ae19af49SJung-uk Kim     acpi_reset_interfaces(dev);
497ae19af49SJung-uk Kim 
4982be4e471SJung-uk Kim     /* Load ACPI name space. */
4992be4e471SJung-uk Kim     status = AcpiLoadTables();
5002be4e471SJung-uk Kim     if (ACPI_FAILURE(status)) {
5012be4e471SJung-uk Kim 	device_printf(dev, "Could not load Namespace: %s\n",
5022be4e471SJung-uk Kim 		      AcpiFormatException(status));
5032be4e471SJung-uk Kim 	goto out;
5042be4e471SJung-uk Kim     }
5052be4e471SJung-uk Kim 
506d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
507d320e05cSJohn Baldwin     /* Handle MCFG table if present. */
508d320e05cSJohn Baldwin     acpi_enable_pcie();
509d320e05cSJohn Baldwin #endif
510d320e05cSJohn Baldwin 
51115e32d5dSMike Smith     /*
512be2b1797SNate Lawson      * Note that some systems (specifically, those with namespace evaluation
513be2b1797SNate Lawson      * issues that require the avoidance of parts of the namespace) must
514be2b1797SNate Lawson      * avoid running _INI and _STA on everything, as well as dodging the final
515be2b1797SNate Lawson      * object init pass.
51615e32d5dSMike Smith      *
51732d18aa5SMike Smith      * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
51832d18aa5SMike Smith      *
519be2b1797SNate Lawson      * XXX We should arrange for the object init pass after we have attached
520be2b1797SNate Lawson      *     all our child devices, but on many systems it works here.
52115e32d5dSMike Smith      */
52232d18aa5SMike Smith     flags = 0;
523d786139cSMaxime Henrion     if (testenv("debug.acpi.avoid"))
52432d18aa5SMike Smith 	flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
525bee4aa4aSNate Lawson 
526bee4aa4aSNate Lawson     /* Bring the hardware and basic handlers online. */
527b53f2771SMike Smith     if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
528be2b1797SNate Lawson 	device_printf(dev, "Could not enable ACPI: %s\n",
529be2b1797SNate Lawson 		      AcpiFormatException(status));
530cb9b0d80SMike Smith 	goto out;
53115e32d5dSMike Smith     }
53215e32d5dSMike Smith 
533f8335e3aSNate Lawson     /*
534f8335e3aSNate Lawson      * Call the ECDT probe function to provide EC functionality before
535f8335e3aSNate Lawson      * the namespace has been evaluated.
536da72d149SNate Lawson      *
537da72d149SNate Lawson      * XXX This happens before the sysresource devices have been probed and
538da72d149SNate Lawson      * attached so its resources come from nexus0.  In practice, this isn't
539da72d149SNate Lawson      * a problem but should be addressed eventually.
540f8335e3aSNate Lawson      */
541f8335e3aSNate Lawson     acpi_ec_ecdt_probe(dev);
542f8335e3aSNate Lawson 
543bee4aa4aSNate Lawson     /* Bring device objects and regions online. */
544b69ed3f4SMitsuru IWASAKI     if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
545be2b1797SNate Lawson 	device_printf(dev, "Could not initialize ACPI objects: %s\n",
546be2b1797SNate Lawson 		      AcpiFormatException(status));
547b69ed3f4SMitsuru IWASAKI 	goto out;
548b69ed3f4SMitsuru IWASAKI     }
549b69ed3f4SMitsuru IWASAKI 
55015e32d5dSMike Smith     /*
5511d073b1dSJohn Baldwin      * Setup our sysctl tree.
5521d073b1dSJohn Baldwin      *
5531d073b1dSJohn Baldwin      * XXX: This doesn't check to make sure that none of these fail.
5541d073b1dSJohn Baldwin      */
5551d073b1dSJohn Baldwin     sysctl_ctx_init(&sc->acpi_sysctl_ctx);
5561d073b1dSJohn Baldwin     sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
5571d073b1dSJohn Baldwin 			       SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
5581d073b1dSJohn Baldwin 			       device_get_name(dev), CTLFLAG_RD, 0, "");
5591d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
560d75de536SMitsuru IWASAKI 	OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
561ad73b301SAdrian Chadd 	0, 0, acpi_supported_sleep_state_sysctl, "A",
562ad73b301SAdrian Chadd 	"List supported ACPI sleep states.");
563d75de536SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5641d073b1dSJohn Baldwin 	OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
565ad73b301SAdrian Chadd 	&sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A",
566ad73b301SAdrian Chadd 	"Power button ACPI sleep state.");
5671d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5681d073b1dSJohn Baldwin 	OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
569ad73b301SAdrian Chadd 	&sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A",
570ad73b301SAdrian Chadd 	"Sleep button ACPI sleep state.");
5711d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5721d073b1dSJohn Baldwin 	OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
573ad73b301SAdrian Chadd 	&sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A",
574ad73b301SAdrian Chadd 	"Lid ACPI sleep state. Set to S3 if you want to suspend your laptop when close the Lid.");
575f86214b6SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
576f86214b6SMitsuru IWASAKI 	OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
577f86214b6SMitsuru IWASAKI 	&sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
578f86214b6SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
579f86214b6SMitsuru IWASAKI 	OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
580f86214b6SMitsuru IWASAKI 	&sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
5812d644607SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
582197b4dccSNate Lawson 	OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
58331f301d0SChristian Brueffer 	"sleep delay in seconds");
584ff01efb5SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
585197b4dccSNate Lawson 	OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
5861611ea87SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
587197b4dccSNate Lawson 	OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
588d85e6785SNate Lawson     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
589d85e6785SNate Lawson 	OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
590d85e6785SNate Lawson 	&sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
591d1b16e18SNate Lawson     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
592d1b16e18SNate Lawson 	OID_AUTO, "handle_reboot", CTLFLAG_RW,
593d1b16e18SNate Lawson 	&sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
594bf0c18ecSNate Lawson 
595bf0c18ecSNate Lawson     /*
5962b9609abSNate Lawson      * Default to 1 second before sleeping to give some machines time to
597bf0c18ecSNate Lawson      * stabilize.
598bf0c18ecSNate Lawson      */
5992b9609abSNate Lawson     sc->acpi_sleep_delay = 1;
6002d644607SMitsuru IWASAKI     if (bootverbose)
6012d644607SMitsuru IWASAKI 	sc->acpi_verbose = 1;
6022be111bfSDavide Italiano     if ((env = kern_getenv("hw.acpi.verbose")) != NULL) {
603965a34fbSNate Lawson 	if (strcmp(env, "0") != 0)
604498d464fSMitsuru IWASAKI 	    sc->acpi_verbose = 1;
605498d464fSMitsuru IWASAKI 	freeenv(env);
606498d464fSMitsuru IWASAKI     }
6071d073b1dSJohn Baldwin 
608ac731af5SJung-uk Kim     /* Only enable reboot by default if the FADT says it is available. */
609ac731af5SJung-uk Kim     if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER)
610ac731af5SJung-uk Kim 	sc->acpi_handle_reboot = 1;
611ac731af5SJung-uk Kim 
612fe5d5d7dSAndrew Turner #if !ACPI_REDUCED_HARDWARE
6132d610c46SNate Lawson     /* Only enable S4BIOS by default if the FACS says it is available. */
614d8c37c3aSAndrew Turner     if (AcpiGbl_FACS != NULL && AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
6152d610c46SNate Lawson 	sc->acpi_s4bios = 1;
616fe5d5d7dSAndrew Turner #endif
6172d610c46SNate Lawson 
618a0e73a12SJung-uk Kim     /* Probe all supported sleep states. */
619a0e73a12SJung-uk Kim     acpi_sleep_states[ACPI_STATE_S0] = TRUE;
620a0e73a12SJung-uk Kim     for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
621efcc2a30SJung-uk Kim 	if (ACPI_SUCCESS(AcpiEvaluateObject(ACPI_ROOT_OBJECT,
622efcc2a30SJung-uk Kim 	    __DECONST(char *, AcpiGbl_SleepStateNames[state]), NULL, NULL)) &&
623efcc2a30SJung-uk Kim 	    ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
624a0e73a12SJung-uk Kim 	    acpi_sleep_states[state] = TRUE;
625a0e73a12SJung-uk Kim 
6261d073b1dSJohn Baldwin     /*
627ea27c63eSNate Lawson      * Dispatch the default sleep state to devices.  The lid switch is set
628a0e73a12SJung-uk Kim      * to UNKNOWN by default to avoid surprising users.
62915e32d5dSMike Smith      */
630a0e73a12SJung-uk Kim     sc->acpi_power_button_sx = acpi_sleep_states[ACPI_STATE_S5] ?
631a0e73a12SJung-uk Kim 	ACPI_STATE_S5 : ACPI_STATE_UNKNOWN;
632a0e73a12SJung-uk Kim     sc->acpi_lid_switch_sx = ACPI_STATE_UNKNOWN;
633a0e73a12SJung-uk Kim     sc->acpi_standby_sx = acpi_sleep_states[ACPI_STATE_S1] ?
634a0e73a12SJung-uk Kim 	ACPI_STATE_S1 : ACPI_STATE_UNKNOWN;
635a0e73a12SJung-uk Kim     sc->acpi_suspend_sx = acpi_sleep_states[ACPI_STATE_S3] ?
636a0e73a12SJung-uk Kim 	ACPI_STATE_S3 : ACPI_STATE_UNKNOWN;
63715e32d5dSMike Smith 
638ea27c63eSNate Lawson     /* Pick the first valid sleep state for the sleep button default. */
639a0e73a12SJung-uk Kim     sc->acpi_sleep_button_sx = ACPI_STATE_UNKNOWN;
64000a30448SNate Lawson     for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
641a0e73a12SJung-uk Kim 	if (acpi_sleep_states[state]) {
642ea27c63eSNate Lawson 	    sc->acpi_sleep_button_sx = state;
643ea27c63eSNate Lawson 	    break;
644ea27c63eSNate Lawson 	}
645ea27c63eSNate Lawson 
64613d4f7baSMitsuru IWASAKI     acpi_enable_fixed_events(sc);
64715e32d5dSMike Smith 
64815e32d5dSMike Smith     /*
64915e32d5dSMike Smith      * Scan the namespace and attach/initialise children.
65015e32d5dSMike Smith      */
65115e32d5dSMike Smith 
65259e472e9SNate Lawson     /* Register our shutdown handler. */
653be2b1797SNate Lawson     EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
654be2b1797SNate Lawson 	SHUTDOWN_PRI_LAST);
65515e32d5dSMike Smith 
65615e32d5dSMike Smith     /*
65715e32d5dSMike Smith      * Register our acpi event handlers.
65815e32d5dSMike Smith      * XXX should be configurable eg. via userland policy manager.
65915e32d5dSMike Smith      */
660be2b1797SNate Lawson     EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
661be2b1797SNate Lawson 	sc, ACPI_EVENT_PRI_LAST);
662be2b1797SNate Lawson     EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
663be2b1797SNate Lawson 	sc, ACPI_EVENT_PRI_LAST);
66415e32d5dSMike Smith 
665be2b1797SNate Lawson     /* Flag our initial states. */
666a0e73a12SJung-uk Kim     sc->acpi_enabled = TRUE;
66715e32d5dSMike Smith     sc->acpi_sstate = ACPI_STATE_S0;
668a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = TRUE;
66915e32d5dSMike Smith 
670be2b1797SNate Lawson     /* Create the control device */
671a89fcf28STakanori Watanabe     sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
6722a4689e8SRobert Watson 			      "acpi");
67315e32d5dSMike Smith     sc->acpi_dev_t->si_drv1 = sc;
67415e32d5dSMike Smith 
675be2b1797SNate Lawson     if ((error = acpi_machdep_init(dev)))
676f86214b6SMitsuru IWASAKI 	goto out;
677f86214b6SMitsuru IWASAKI 
678f9390180SMitsuru IWASAKI     /* Register ACPI again to pass the correct argument of pm_func. */
679f9390180SMitsuru IWASAKI     power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
680f9390180SMitsuru IWASAKI 
68164de8019SJohn Baldwin     if (!acpi_disabled("bus")) {
68264de8019SJohn Baldwin 	EVENTHANDLER_REGISTER(dev_lookup, acpi_lookup, NULL, 1000);
683eeb6dba2SJohn Baldwin 	acpi_probe_children(dev);
68464de8019SJohn Baldwin     }
685eeb6dba2SJohn Baldwin 
6865a77b11bSJung-uk Kim     /* Update all GPEs and enable runtime GPEs. */
6875a77b11bSJung-uk Kim     status = AcpiUpdateAllGpes();
6885a77b11bSJung-uk Kim     if (ACPI_FAILURE(status))
6895a77b11bSJung-uk Kim 	device_printf(dev, "Could not update all GPEs: %s\n",
6905a77b11bSJung-uk Kim 	    AcpiFormatException(status));
6915a77b11bSJung-uk Kim 
692a0e73a12SJung-uk Kim     /* Allow sleep request after a while. */
693fadf3fb9SJohn Baldwin     callout_init_mtx(&acpi_sleep_timer, &acpi_mutex, 0);
694fadf3fb9SJohn Baldwin     callout_reset(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME,
695fadf3fb9SJohn Baldwin 	acpi_sleep_enable, sc);
696a0e73a12SJung-uk Kim 
697cb9b0d80SMike Smith     error = 0;
698cb9b0d80SMike Smith 
699cb9b0d80SMike Smith  out:
700cb9b0d80SMike Smith     return_VALUE (error);
70115e32d5dSMike Smith }
70215e32d5dSMike Smith 
703a7a3177fSJung-uk Kim static void
704a7a3177fSJung-uk Kim acpi_set_power_children(device_t dev, int state)
705a7a3177fSJung-uk Kim {
70644aba0f6SJung-uk Kim 	device_t child;
707a7a3177fSJung-uk Kim 	device_t *devlist;
708a7a3177fSJung-uk Kim 	int dstate, i, numdevs;
709a7a3177fSJung-uk Kim 
710a7a3177fSJung-uk Kim 	if (device_get_children(dev, &devlist, &numdevs) != 0)
711a7a3177fSJung-uk Kim 		return;
712a7a3177fSJung-uk Kim 
713a7a3177fSJung-uk Kim 	/*
714a7a3177fSJung-uk Kim 	 * Retrieve and set D-state for the sleep state if _SxD is present.
715a7a3177fSJung-uk Kim 	 * Skip children who aren't attached since they are handled separately.
716a7a3177fSJung-uk Kim 	 */
717a7a3177fSJung-uk Kim 	for (i = 0; i < numdevs; i++) {
718a7a3177fSJung-uk Kim 		child = devlist[i];
719a7a3177fSJung-uk Kim 		dstate = state;
720a7a3177fSJung-uk Kim 		if (device_is_attached(child) &&
72144aba0f6SJung-uk Kim 		    acpi_device_pwr_for_sleep(dev, child, &dstate) == 0)
722a7a3177fSJung-uk Kim 			acpi_set_powerstate(child, dstate);
723a7a3177fSJung-uk Kim 	}
724a7a3177fSJung-uk Kim 	free(devlist, M_TEMP);
725a7a3177fSJung-uk Kim }
726a7a3177fSJung-uk Kim 
727169b539aSNate Lawson static int
72810ce62b9SNate Lawson acpi_suspend(device_t dev)
72910ce62b9SNate Lawson {
730a7a3177fSJung-uk Kim     int error;
73110ce62b9SNate Lawson 
732a56fe095SJohn Baldwin     GIANT_REQUIRED;
733a56fe095SJohn Baldwin 
73410ce62b9SNate Lawson     error = bus_generic_suspend(dev);
735a7a3177fSJung-uk Kim     if (error == 0)
736a7a3177fSJung-uk Kim 	acpi_set_power_children(dev, ACPI_STATE_D3);
73710ce62b9SNate Lawson 
73810ce62b9SNate Lawson     return (error);
73910ce62b9SNate Lawson }
74010ce62b9SNate Lawson 
74110ce62b9SNate Lawson static int
74210ce62b9SNate Lawson acpi_resume(device_t dev)
74310ce62b9SNate Lawson {
74410ce62b9SNate Lawson 
745a56fe095SJohn Baldwin     GIANT_REQUIRED;
746a56fe095SJohn Baldwin 
747a7a3177fSJung-uk Kim     acpi_set_power_children(dev, ACPI_STATE_D0);
74810ce62b9SNate Lawson 
74910ce62b9SNate Lawson     return (bus_generic_resume(dev));
75010ce62b9SNate Lawson }
75110ce62b9SNate Lawson 
75210ce62b9SNate Lawson static int
753169b539aSNate Lawson acpi_shutdown(device_t dev)
754169b539aSNate Lawson {
755169b539aSNate Lawson 
756a56fe095SJohn Baldwin     GIANT_REQUIRED;
757a56fe095SJohn Baldwin 
7580e414868SNate Lawson     /* Allow children to shutdown first. */
7590e414868SNate Lawson     bus_generic_shutdown(dev);
7600e414868SNate Lawson 
761bee4aa4aSNate Lawson     /*
762bee4aa4aSNate Lawson      * Enable any GPEs that are able to power-on the system (i.e., RTC).
763bee4aa4aSNate Lawson      * Also, disable any that are not valid for this state (most).
764bee4aa4aSNate Lawson      */
765d4b9ff91SNate Lawson     acpi_wake_prep_walk(ACPI_STATE_S5);
766d4b9ff91SNate Lawson 
767169b539aSNate Lawson     return (0);
768169b539aSNate Lawson }
769169b539aSNate Lawson 
77015e32d5dSMike Smith /*
77115e32d5dSMike Smith  * Handle a new device being added
77215e32d5dSMike Smith  */
77315e32d5dSMike Smith static device_t
7743d844eddSAndriy Gapon acpi_add_child(device_t bus, u_int order, const char *name, int unit)
77515e32d5dSMike Smith {
77615e32d5dSMike Smith     struct acpi_device	*ad;
77715e32d5dSMike Smith     device_t		child;
77815e32d5dSMike Smith 
779be2b1797SNate Lawson     if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
78015e32d5dSMike Smith 	return (NULL);
78115e32d5dSMike Smith 
78215e32d5dSMike Smith     resource_list_init(&ad->ad_rl);
78315e32d5dSMike Smith 
78415e32d5dSMike Smith     child = device_add_child_ordered(bus, order, name, unit);
78515e32d5dSMike Smith     if (child != NULL)
78615e32d5dSMike Smith 	device_set_ivars(child, ad);
78743ce1c77SNate Lawson     else
78843ce1c77SNate Lawson 	free(ad, M_ACPIDEV);
78915e32d5dSMike Smith     return (child);
79015e32d5dSMike Smith }
79115e32d5dSMike Smith 
79215e32d5dSMike Smith static int
79315e32d5dSMike Smith acpi_print_child(device_t bus, device_t child)
79415e32d5dSMike Smith {
79515e32d5dSMike Smith     struct acpi_device	 *adev = device_get_ivars(child);
79615e32d5dSMike Smith     struct resource_list *rl = &adev->ad_rl;
79715e32d5dSMike Smith     int retval = 0;
79815e32d5dSMike Smith 
79915e32d5dSMike Smith     retval += bus_print_child_header(bus, child);
800da1b038aSJustin Hibbits     retval += resource_list_print_type(rl, "port",  SYS_RES_IOPORT, "%#jx");
801da1b038aSJustin Hibbits     retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#jx");
802da1b038aSJustin Hibbits     retval += resource_list_print_type(rl, "irq",   SYS_RES_IRQ,    "%jd");
803da1b038aSJustin Hibbits     retval += resource_list_print_type(rl, "drq",   SYS_RES_DRQ,    "%jd");
804a91c5fa8SNate Lawson     if (device_get_flags(child))
805a91c5fa8SNate Lawson 	retval += printf(" flags %#x", device_get_flags(child));
806ffcf962dSAdrian Chadd     retval += bus_print_child_domain(bus, child);
8072c8d3b23SNate Lawson     retval += bus_print_child_footer(bus, child);
80815e32d5dSMike Smith 
80915e32d5dSMike Smith     return (retval);
81015e32d5dSMike Smith }
81115e32d5dSMike Smith 
81210ce62b9SNate Lawson /*
81310ce62b9SNate Lawson  * If this device is an ACPI child but no one claimed it, attempt
81410ce62b9SNate Lawson  * to power it off.  We'll power it back up when a driver is added.
81510ce62b9SNate Lawson  *
81610ce62b9SNate Lawson  * XXX Disabled for now since many necessary devices (like fdc and
81710ce62b9SNate Lawson  * ATA) don't claim the devices we created for them but still expect
81810ce62b9SNate Lawson  * them to be powered up.
81910ce62b9SNate Lawson  */
82010ce62b9SNate Lawson static void
82110ce62b9SNate Lawson acpi_probe_nomatch(device_t bus, device_t child)
82210ce62b9SNate Lawson {
82396cf0b6dSWarner Losh #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
824a7a3177fSJung-uk Kim     acpi_set_powerstate(child, ACPI_STATE_D3);
82596cf0b6dSWarner Losh #endif
82610ce62b9SNate Lawson }
82710ce62b9SNate Lawson 
82810ce62b9SNate Lawson /*
82910ce62b9SNate Lawson  * If a new driver has a chance to probe a child, first power it up.
83010ce62b9SNate Lawson  *
83110ce62b9SNate Lawson  * XXX Disabled for now (see acpi_probe_nomatch for details).
83210ce62b9SNate Lawson  */
83310ce62b9SNate Lawson static void
83410ce62b9SNate Lawson acpi_driver_added(device_t dev, driver_t *driver)
83510ce62b9SNate Lawson {
83610ce62b9SNate Lawson     device_t child, *devlist;
83710ce62b9SNate Lawson     int i, numdevs;
83810ce62b9SNate Lawson 
83910ce62b9SNate Lawson     DEVICE_IDENTIFY(driver, dev);
840099ea4b5SWarner Losh     if (device_get_children(dev, &devlist, &numdevs))
841099ea4b5SWarner Losh 	    return;
84210ce62b9SNate Lawson     for (i = 0; i < numdevs; i++) {
84310ce62b9SNate Lawson 	child = devlist[i];
84410ce62b9SNate Lawson 	if (device_get_state(child) == DS_NOTPRESENT) {
84596cf0b6dSWarner Losh #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
846a7a3177fSJung-uk Kim 	    acpi_set_powerstate(child, ACPI_STATE_D0);
84710ce62b9SNate Lawson 	    if (device_probe_and_attach(child) != 0)
848a7a3177fSJung-uk Kim 		acpi_set_powerstate(child, ACPI_STATE_D3);
84996cf0b6dSWarner Losh #else
85096cf0b6dSWarner Losh 	    device_probe_and_attach(child);
85196cf0b6dSWarner Losh #endif
85210ce62b9SNate Lawson 	}
85310ce62b9SNate Lawson     }
85410ce62b9SNate Lawson     free(devlist, M_TEMP);
85510ce62b9SNate Lawson }
85610ce62b9SNate Lawson 
85763600cc3SNate Lawson /* Location hint for devctl(8) */
85863600cc3SNate Lawson static int
859247648afSTakanori Watanabe acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
860247648afSTakanori Watanabe     size_t buflen)
861247648afSTakanori Watanabe {
862247648afSTakanori Watanabe     struct acpi_device *dinfo = device_get_ivars(child);
8639cf5a6aaSAdrian Chadd     char buf2[32];
8649cf5a6aaSAdrian Chadd     int pxm;
865247648afSTakanori Watanabe 
8669cf5a6aaSAdrian Chadd     if (dinfo->ad_handle) {
867d40c0f53SNate Lawson         snprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
8689cf5a6aaSAdrian Chadd         if (ACPI_SUCCESS(acpi_GetInteger(dinfo->ad_handle, "_PXM", &pxm))) {
8699cf5a6aaSAdrian Chadd                 snprintf(buf2, 32, " _PXM=%d", pxm);
8709cf5a6aaSAdrian Chadd                 strlcat(buf, buf2, buflen);
8719cf5a6aaSAdrian Chadd         }
8729cf5a6aaSAdrian Chadd     } else {
873d40c0f53SNate Lawson         snprintf(buf, buflen, "unknown");
8749cf5a6aaSAdrian Chadd     }
875247648afSTakanori Watanabe     return (0);
876247648afSTakanori Watanabe }
877247648afSTakanori Watanabe 
87863600cc3SNate Lawson /* PnP information for devctl(8) */
87963600cc3SNate Lawson static int
880247648afSTakanori Watanabe acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
881247648afSTakanori Watanabe     size_t buflen)
882247648afSTakanori Watanabe {
88363600cc3SNate Lawson     struct acpi_device *dinfo = device_get_ivars(child);
88492488a57SJung-uk Kim     ACPI_DEVICE_INFO *adinfo;
885247648afSTakanori Watanabe 
88692488a57SJung-uk Kim     if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo))) {
887d40c0f53SNate Lawson 	snprintf(buf, buflen, "unknown");
88892488a57SJung-uk Kim 	return (0);
88992488a57SJung-uk Kim     }
89092488a57SJung-uk Kim 
891247648afSTakanori Watanabe     snprintf(buf, buflen, "_HID=%s _UID=%lu",
892247648afSTakanori Watanabe 	(adinfo->Valid & ACPI_VALID_HID) ?
89392488a57SJung-uk Kim 	adinfo->HardwareId.String : "none",
89463600cc3SNate Lawson 	(adinfo->Valid & ACPI_VALID_UID) ?
89592488a57SJung-uk Kim 	strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL);
896247648afSTakanori Watanabe     AcpiOsFree(adinfo);
897247648afSTakanori Watanabe 
898247648afSTakanori Watanabe     return (0);
899247648afSTakanori Watanabe }
900247648afSTakanori Watanabe 
901247648afSTakanori Watanabe /*
90215e32d5dSMike Smith  * Handle per-device ivars
90315e32d5dSMike Smith  */
90415e32d5dSMike Smith static int
90515e32d5dSMike Smith acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
90615e32d5dSMike Smith {
90715e32d5dSMike Smith     struct acpi_device	*ad;
90815e32d5dSMike Smith 
90915e32d5dSMike Smith     if ((ad = device_get_ivars(child)) == NULL) {
9102d0c82e8SJung-uk Kim 	device_printf(child, "device has no ivars\n");
91115e32d5dSMike Smith 	return (ENOENT);
91215e32d5dSMike Smith     }
91315e32d5dSMike Smith 
914be2b1797SNate Lawson     /* ACPI and ISA compatibility ivars */
91515e32d5dSMike Smith     switch(index) {
91615e32d5dSMike Smith     case ACPI_IVAR_HANDLE:
91715e32d5dSMike Smith 	*(ACPI_HANDLE *)result = ad->ad_handle;
91815e32d5dSMike Smith 	break;
91915e32d5dSMike Smith     case ACPI_IVAR_PRIVATE:
92015e32d5dSMike Smith 	*(void **)result = ad->ad_private;
92115e32d5dSMike Smith 	break;
922d4b9ff91SNate Lawson     case ACPI_IVAR_FLAGS:
923d4b9ff91SNate Lawson 	*(int *)result = ad->ad_flags;
924d4b9ff91SNate Lawson 	break;
92532d18aa5SMike Smith     case ISA_IVAR_VENDORID:
92632d18aa5SMike Smith     case ISA_IVAR_SERIAL:
92732d18aa5SMike Smith     case ISA_IVAR_COMPATID:
92832d18aa5SMike Smith 	*(int *)result = -1;
92932d18aa5SMike Smith 	break;
93032d18aa5SMike Smith     case ISA_IVAR_LOGICALID:
93132d18aa5SMike Smith 	*(int *)result = acpi_isa_get_logicalid(child);
93232d18aa5SMike Smith 	break;
93315e32d5dSMike Smith     default:
93415e32d5dSMike Smith 	return (ENOENT);
93515e32d5dSMike Smith     }
936be2b1797SNate Lawson 
93715e32d5dSMike Smith     return (0);
93815e32d5dSMike Smith }
93915e32d5dSMike Smith 
94015e32d5dSMike Smith static int
94115e32d5dSMike Smith acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
94215e32d5dSMike Smith {
94315e32d5dSMike Smith     struct acpi_device	*ad;
94415e32d5dSMike Smith 
94515e32d5dSMike Smith     if ((ad = device_get_ivars(child)) == NULL) {
9462d0c82e8SJung-uk Kim 	device_printf(child, "device has no ivars\n");
94715e32d5dSMike Smith 	return (ENOENT);
94815e32d5dSMike Smith     }
94915e32d5dSMike Smith 
95015e32d5dSMike Smith     switch(index) {
95115e32d5dSMike Smith     case ACPI_IVAR_HANDLE:
95215e32d5dSMike Smith 	ad->ad_handle = (ACPI_HANDLE)value;
95315e32d5dSMike Smith 	break;
95415e32d5dSMike Smith     case ACPI_IVAR_PRIVATE:
95515e32d5dSMike Smith 	ad->ad_private = (void *)value;
95615e32d5dSMike Smith 	break;
957d4b9ff91SNate Lawson     case ACPI_IVAR_FLAGS:
958d4b9ff91SNate Lawson 	ad->ad_flags = (int)value;
959d4b9ff91SNate Lawson 	break;
96015e32d5dSMike Smith     default:
9612ab060eeSWarner Losh 	panic("bad ivar write request (%d)", index);
96215e32d5dSMike Smith 	return (ENOENT);
96315e32d5dSMike Smith     }
964be2b1797SNate Lawson 
96515e32d5dSMike Smith     return (0);
96615e32d5dSMike Smith }
96715e32d5dSMike Smith 
96815e32d5dSMike Smith /*
96915e32d5dSMike Smith  * Handle child resource allocation/removal
97015e32d5dSMike Smith  */
97191233413SNate Lawson static struct resource_list *
97291233413SNate Lawson acpi_get_rlist(device_t dev, device_t child)
97315e32d5dSMike Smith {
97491233413SNate Lawson     struct acpi_device		*ad;
97515e32d5dSMike Smith 
97691233413SNate Lawson     ad = device_get_ivars(child);
97791233413SNate Lawson     return (&ad->ad_rl);
97815e32d5dSMike Smith }
97915e32d5dSMike Smith 
9800d484d24SJohn Baldwin static int
9810d484d24SJohn Baldwin acpi_match_resource_hint(device_t dev, int type, long value)
9820d484d24SJohn Baldwin {
9830d484d24SJohn Baldwin     struct acpi_device *ad = device_get_ivars(dev);
9840d484d24SJohn Baldwin     struct resource_list *rl = &ad->ad_rl;
9850d484d24SJohn Baldwin     struct resource_list_entry *rle;
9860d484d24SJohn Baldwin 
9870d484d24SJohn Baldwin     STAILQ_FOREACH(rle, rl, link) {
9880d484d24SJohn Baldwin 	if (rle->type != type)
9890d484d24SJohn Baldwin 	    continue;
9900d484d24SJohn Baldwin 	if (rle->start <= value && rle->end >= value)
9910d484d24SJohn Baldwin 	    return (1);
9920d484d24SJohn Baldwin     }
9930d484d24SJohn Baldwin     return (0);
9940d484d24SJohn Baldwin }
9950d484d24SJohn Baldwin 
9960d484d24SJohn Baldwin /*
9970d484d24SJohn Baldwin  * Wire device unit numbers based on resource matches in hints.
9980d484d24SJohn Baldwin  */
9990d484d24SJohn Baldwin static void
10000d484d24SJohn Baldwin acpi_hint_device_unit(device_t acdev, device_t child, const char *name,
10010d484d24SJohn Baldwin     int *unitp)
10020d484d24SJohn Baldwin {
10030d484d24SJohn Baldwin     const char *s;
10040d484d24SJohn Baldwin     long value;
10050d484d24SJohn Baldwin     int line, matches, unit;
10060d484d24SJohn Baldwin 
10070d484d24SJohn Baldwin     /*
10080d484d24SJohn Baldwin      * Iterate over all the hints for the devices with the specified
10090d484d24SJohn Baldwin      * name to see if one's resources are a subset of this device.
10100d484d24SJohn Baldwin      */
10110d484d24SJohn Baldwin     line = 0;
10120d484d24SJohn Baldwin     for (;;) {
10130d484d24SJohn Baldwin 	if (resource_find_dev(&line, name, &unit, "at", NULL) != 0)
10140d484d24SJohn Baldwin 	    break;
10150d484d24SJohn Baldwin 
10160d484d24SJohn Baldwin 	/* Must have an "at" for acpi or isa. */
10170d484d24SJohn Baldwin 	resource_string_value(name, unit, "at", &s);
10180d484d24SJohn Baldwin 	if (!(strcmp(s, "acpi0") == 0 || strcmp(s, "acpi") == 0 ||
10190d484d24SJohn Baldwin 	    strcmp(s, "isa0") == 0 || strcmp(s, "isa") == 0))
10200d484d24SJohn Baldwin 	    continue;
10210d484d24SJohn Baldwin 
10220d484d24SJohn Baldwin 	/*
10232fcd493cSJohn Baldwin 	 * Check for matching resources.  We must have at least one match.
10242fcd493cSJohn Baldwin 	 * Since I/O and memory resources cannot be shared, if we get a
10252fcd493cSJohn Baldwin 	 * match on either of those, ignore any mismatches in IRQs or DRQs.
10260d484d24SJohn Baldwin 	 *
10270d484d24SJohn Baldwin 	 * XXX: We may want to revisit this to be more lenient and wire
10280d484d24SJohn Baldwin 	 * as long as it gets one match.
10290d484d24SJohn Baldwin 	 */
10300d484d24SJohn Baldwin 	matches = 0;
10310d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "port", &value) == 0) {
10322fcd493cSJohn Baldwin 	    /*
10332fcd493cSJohn Baldwin 	     * Floppy drive controllers are notorious for having a
10342fcd493cSJohn Baldwin 	     * wide variety of resources not all of which include the
10352fcd493cSJohn Baldwin 	     * first port that is specified by the hint (typically
10362fcd493cSJohn Baldwin 	     * 0x3f0) (see the comment above fdc_isa_alloc_resources()
10372fcd493cSJohn Baldwin 	     * in fdc_isa.c).  However, they do all seem to include
10382fcd493cSJohn Baldwin 	     * port + 2 (e.g. 0x3f2) so for a floppy device, look for
10392fcd493cSJohn Baldwin 	     * 'value + 2' in the port resources instead of the hint
10402fcd493cSJohn Baldwin 	     * value.
10412fcd493cSJohn Baldwin 	     */
10422fcd493cSJohn Baldwin 	    if (strcmp(name, "fdc") == 0)
10432fcd493cSJohn Baldwin 		value += 2;
10440d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value))
10450d484d24SJohn Baldwin 		matches++;
10460d484d24SJohn Baldwin 	    else
10470d484d24SJohn Baldwin 		continue;
10480d484d24SJohn Baldwin 	}
10490d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "maddr", &value) == 0) {
10500d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_MEMORY, value))
10510d484d24SJohn Baldwin 		matches++;
10520d484d24SJohn Baldwin 	    else
10530d484d24SJohn Baldwin 		continue;
10540d484d24SJohn Baldwin 	}
10552fcd493cSJohn Baldwin 	if (matches > 0)
10562fcd493cSJohn Baldwin 	    goto matched;
10570d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "irq", &value) == 0) {
10580d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_IRQ, value))
10590d484d24SJohn Baldwin 		matches++;
10600d484d24SJohn Baldwin 	    else
10610d484d24SJohn Baldwin 		continue;
10620d484d24SJohn Baldwin 	}
10630d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "drq", &value) == 0) {
10640d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_DRQ, value))
10650d484d24SJohn Baldwin 		matches++;
10660d484d24SJohn Baldwin 	    else
10670d484d24SJohn Baldwin 		continue;
10680d484d24SJohn Baldwin 	}
10690d484d24SJohn Baldwin 
10702fcd493cSJohn Baldwin     matched:
10710d484d24SJohn Baldwin 	if (matches > 0) {
10720d484d24SJohn Baldwin 	    /* We have a winner! */
10730d484d24SJohn Baldwin 	    *unitp = unit;
10740d484d24SJohn Baldwin 	    break;
10750d484d24SJohn Baldwin 	}
10760d484d24SJohn Baldwin     }
10770d484d24SJohn Baldwin }
10780d484d24SJohn Baldwin 
1079adad4744SNate Lawson /*
10805d18c60aSAdrian Chadd  * Fetch the VM domain for the given device 'dev'.
10815d18c60aSAdrian Chadd  *
10825d18c60aSAdrian Chadd  * Return 1 + domain if there's a domain, 0 if not found;
10835d18c60aSAdrian Chadd  * -1 upon an error.
10845d18c60aSAdrian Chadd  */
10855d18c60aSAdrian Chadd int
10865d18c60aSAdrian Chadd acpi_parse_pxm(device_t dev, int *domain)
10875d18c60aSAdrian Chadd {
108862d70a81SJohn Baldwin #ifdef DEVICE_NUMA
10895d18c60aSAdrian Chadd 	ACPI_HANDLE h;
10905d18c60aSAdrian Chadd 	int d, pxm;
10915d18c60aSAdrian Chadd 
10925d18c60aSAdrian Chadd 	h = acpi_get_handle(dev);
10935d18c60aSAdrian Chadd 	if ((h != NULL) &&
10945d18c60aSAdrian Chadd 	    ACPI_SUCCESS(acpi_GetInteger(h, "_PXM", &pxm))) {
10955d18c60aSAdrian Chadd 		d = acpi_map_pxm_to_vm_domainid(pxm);
10965d18c60aSAdrian Chadd 		if (d < 0)
10975d18c60aSAdrian Chadd 			return (-1);
10985d18c60aSAdrian Chadd 		*domain = d;
10995d18c60aSAdrian Chadd 		return (1);
11005d18c60aSAdrian Chadd 	}
11015d18c60aSAdrian Chadd #endif
11025d18c60aSAdrian Chadd 
11035d18c60aSAdrian Chadd 	return (0);
11045d18c60aSAdrian Chadd }
11055d18c60aSAdrian Chadd 
11065d18c60aSAdrian Chadd /*
110715ae88baSJohn Baldwin  * Fetch the NUMA domain for the given device.
1108ffcf962dSAdrian Chadd  *
1109ffcf962dSAdrian Chadd  * If a device has a _PXM method, map that to a NUMA domain.
1110ffcf962dSAdrian Chadd  *
1111ffcf962dSAdrian Chadd  * If none is found, then it'll call the parent method.
1112ffcf962dSAdrian Chadd  * If there's no domain, return ENOENT.
1113ffcf962dSAdrian Chadd  */
1114ffcf962dSAdrian Chadd int
1115ffcf962dSAdrian Chadd acpi_get_domain(device_t dev, device_t child, int *domain)
1116ffcf962dSAdrian Chadd {
11175d18c60aSAdrian Chadd 	int ret;
1118ffcf962dSAdrian Chadd 
11195d18c60aSAdrian Chadd 	ret = acpi_parse_pxm(child, domain);
11205d18c60aSAdrian Chadd 	/* Error */
11215d18c60aSAdrian Chadd 	if (ret == -1)
1122ffcf962dSAdrian Chadd 		return (ENOENT);
11235d18c60aSAdrian Chadd 	/* Found */
11245d18c60aSAdrian Chadd 	if (ret == 1)
1125ffcf962dSAdrian Chadd 		return (0);
11265d18c60aSAdrian Chadd 
1127ffcf962dSAdrian Chadd 	/* No _PXM node; go up a level */
1128ffcf962dSAdrian Chadd 	return (bus_generic_get_domain(dev, child, domain));
1129ffcf962dSAdrian Chadd }
1130ffcf962dSAdrian Chadd 
1131ffcf962dSAdrian Chadd /*
1132adad4744SNate Lawson  * Pre-allocate/manage all memory and IO resources.  Since rman can't handle
1133adad4744SNate Lawson  * duplicates, we merge any in the sysresource attach routine.
1134adad4744SNate Lawson  */
1135adad4744SNate Lawson static int
1136adad4744SNate Lawson acpi_sysres_alloc(device_t dev)
1137adad4744SNate Lawson {
1138adad4744SNate Lawson     struct resource *res;
1139adad4744SNate Lawson     struct resource_list *rl;
1140adad4744SNate Lawson     struct resource_list_entry *rle;
1141adad4744SNate Lawson     struct rman *rm;
1142da72d149SNate Lawson     char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1143da72d149SNate Lawson     device_t *children;
1144da72d149SNate Lawson     int child_count, i;
1145da72d149SNate Lawson 
1146da72d149SNate Lawson     /*
1147da72d149SNate Lawson      * Probe/attach any sysresource devices.  This would be unnecessary if we
1148da72d149SNate Lawson      * had multi-pass probe/attach.
1149da72d149SNate Lawson      */
1150da72d149SNate Lawson     if (device_get_children(dev, &children, &child_count) != 0)
1151da72d149SNate Lawson 	return (ENXIO);
1152da72d149SNate Lawson     for (i = 0; i < child_count; i++) {
1153da72d149SNate Lawson 	if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1154da72d149SNate Lawson 	    device_probe_and_attach(children[i]);
1155da72d149SNate Lawson     }
1156da72d149SNate Lawson     free(children, M_TEMP);
1157adad4744SNate Lawson 
1158adad4744SNate Lawson     rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
1159be1bf4d2SPoul-Henning Kamp     STAILQ_FOREACH(rle, rl, link) {
1160adad4744SNate Lawson 	if (rle->res != NULL) {
1161da1b038aSJustin Hibbits 	    device_printf(dev, "duplicate resource for %jx\n", rle->start);
1162adad4744SNate Lawson 	    continue;
1163adad4744SNate Lawson 	}
1164adad4744SNate Lawson 
1165adad4744SNate Lawson 	/* Only memory and IO resources are valid here. */
1166adad4744SNate Lawson 	switch (rle->type) {
1167adad4744SNate Lawson 	case SYS_RES_IOPORT:
1168adad4744SNate Lawson 	    rm = &acpi_rman_io;
1169adad4744SNate Lawson 	    break;
1170adad4744SNate Lawson 	case SYS_RES_MEMORY:
1171adad4744SNate Lawson 	    rm = &acpi_rman_mem;
1172adad4744SNate Lawson 	    break;
1173adad4744SNate Lawson 	default:
1174adad4744SNate Lawson 	    continue;
1175adad4744SNate Lawson 	}
1176adad4744SNate Lawson 
1177adad4744SNate Lawson 	/* Pre-allocate resource and add to our rman pool. */
1178adad4744SNate Lawson 	res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1179adad4744SNate Lawson 	    &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
1180adad4744SNate Lawson 	if (res != NULL) {
1181adad4744SNate Lawson 	    rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1182adad4744SNate Lawson 	    rle->res = res;
118344947d3aSJohn Baldwin 	} else if (bootverbose)
1184da1b038aSJustin Hibbits 	    device_printf(dev, "reservation of %jx, %jx (%d) failed\n",
1185adad4744SNate Lawson 		rle->start, rle->count, rle->type);
1186adad4744SNate Lawson     }
1187adad4744SNate Lawson     return (0);
1188adad4744SNate Lawson }
1189adad4744SNate Lawson 
1190ea233199SJohn Baldwin static char *pcilink_ids[] = { "PNP0C0F", NULL };
1191ea233199SJohn Baldwin static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1192ea233199SJohn Baldwin 
1193ea233199SJohn Baldwin /*
1194ea233199SJohn Baldwin  * Reserve declared resources for devices found during attach once system
1195ea233199SJohn Baldwin  * resources have been allocated.
1196ea233199SJohn Baldwin  */
1197ea233199SJohn Baldwin static void
1198ea233199SJohn Baldwin acpi_reserve_resources(device_t dev)
1199ea233199SJohn Baldwin {
1200ea233199SJohn Baldwin     struct resource_list_entry *rle;
1201ea233199SJohn Baldwin     struct resource_list *rl;
1202ea233199SJohn Baldwin     struct acpi_device *ad;
1203ea233199SJohn Baldwin     struct acpi_softc *sc;
1204ea233199SJohn Baldwin     device_t *children;
1205ea233199SJohn Baldwin     int child_count, i;
1206ea233199SJohn Baldwin 
1207ea233199SJohn Baldwin     sc = device_get_softc(dev);
1208ea233199SJohn Baldwin     if (device_get_children(dev, &children, &child_count) != 0)
1209ea233199SJohn Baldwin 	return;
1210ea233199SJohn Baldwin     for (i = 0; i < child_count; i++) {
1211ea233199SJohn Baldwin 	ad = device_get_ivars(children[i]);
1212ea233199SJohn Baldwin 	rl = &ad->ad_rl;
1213ea233199SJohn Baldwin 
1214ea233199SJohn Baldwin 	/* Don't reserve system resources. */
1215ea233199SJohn Baldwin 	if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1216ea233199SJohn Baldwin 	    continue;
1217ea233199SJohn Baldwin 
1218ea233199SJohn Baldwin 	STAILQ_FOREACH(rle, rl, link) {
1219ea233199SJohn Baldwin 	    /*
1220ea233199SJohn Baldwin 	     * Don't reserve IRQ resources.  There are many sticky things
1221ea233199SJohn Baldwin 	     * to get right otherwise (e.g. IRQs for psm, atkbd, and HPET
1222ea233199SJohn Baldwin 	     * when using legacy routing).
1223ea233199SJohn Baldwin 	     */
1224ea233199SJohn Baldwin 	    if (rle->type == SYS_RES_IRQ)
1225ea233199SJohn Baldwin 		continue;
1226ea233199SJohn Baldwin 
1227ea233199SJohn Baldwin 	    /*
12280d81cf12SJohn Baldwin 	     * Don't reserve the resource if it is already allocated.
12290d81cf12SJohn Baldwin 	     * The acpi_ec(4) driver can allocate its resources early
12300d81cf12SJohn Baldwin 	     * if ECDT is present.
12310d81cf12SJohn Baldwin 	     */
12320d81cf12SJohn Baldwin 	    if (rle->res != NULL)
12330d81cf12SJohn Baldwin 		continue;
12340d81cf12SJohn Baldwin 
12350d81cf12SJohn Baldwin 	    /*
1236ea233199SJohn Baldwin 	     * Try to reserve the resource from our parent.  If this
1237ea233199SJohn Baldwin 	     * fails because the resource is a system resource, just
1238ea233199SJohn Baldwin 	     * let it be.  The resource range is already reserved so
1239ea233199SJohn Baldwin 	     * that other devices will not use it.  If the driver
1240ea233199SJohn Baldwin 	     * needs to allocate the resource, then
1241ea233199SJohn Baldwin 	     * acpi_alloc_resource() will sub-alloc from the system
1242ea233199SJohn Baldwin 	     * resource.
1243ea233199SJohn Baldwin 	     */
1244ea233199SJohn Baldwin 	    resource_list_reserve(rl, dev, children[i], rle->type, &rle->rid,
1245ea233199SJohn Baldwin 		rle->start, rle->end, rle->count, 0);
1246ea233199SJohn Baldwin 	}
1247ea233199SJohn Baldwin     }
1248ea233199SJohn Baldwin     free(children, M_TEMP);
1249ea233199SJohn Baldwin     sc->acpi_resources_reserved = 1;
1250ea233199SJohn Baldwin }
1251ea233199SJohn Baldwin 
1252ea233199SJohn Baldwin static int
1253ea233199SJohn Baldwin acpi_set_resource(device_t dev, device_t child, int type, int rid,
12542dd1bdf1SJustin Hibbits     rman_res_t start, rman_res_t count)
1255ea233199SJohn Baldwin {
1256ea233199SJohn Baldwin     struct acpi_softc *sc = device_get_softc(dev);
1257ea233199SJohn Baldwin     struct acpi_device *ad = device_get_ivars(child);
1258ea233199SJohn Baldwin     struct resource_list *rl = &ad->ad_rl;
12597e3343bfSJohn Baldwin     ACPI_DEVICE_INFO *devinfo;
12602dd1bdf1SJustin Hibbits     rman_res_t end;
1261ea233199SJohn Baldwin 
1262ea233199SJohn Baldwin     /* Ignore IRQ resources for PCI link devices. */
1263ea233199SJohn Baldwin     if (type == SYS_RES_IRQ && ACPI_ID_PROBE(dev, child, pcilink_ids) != NULL)
1264ea233199SJohn Baldwin 	return (0);
1265ea233199SJohn Baldwin 
12667e3343bfSJohn Baldwin     /*
1267d2dc06caSJohn Baldwin      * Ignore most resources for PCI root bridges.  Some BIOSes
12687e3343bfSJohn Baldwin      * incorrectly enumerate the memory ranges they decode as plain
1269d2dc06caSJohn Baldwin      * memory resources instead of as ResourceProducer ranges.  Other
1270d2dc06caSJohn Baldwin      * BIOSes incorrectly list system resource entries for I/O ranges
1271d2dc06caSJohn Baldwin      * under the PCI bridge.  Do allow the one known-correct case on
1272d2dc06caSJohn Baldwin      * x86 of a PCI bridge claiming the I/O ports used for PCI config
1273d2dc06caSJohn Baldwin      * access.
12747e3343bfSJohn Baldwin      */
1275d2dc06caSJohn Baldwin     if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) {
12767e3343bfSJohn Baldwin 	if (ACPI_SUCCESS(AcpiGetObjectInfo(ad->ad_handle, &devinfo))) {
12777e3343bfSJohn Baldwin 	    if ((devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0) {
1278d2dc06caSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
1279d2dc06caSJohn Baldwin 		if (!(type == SYS_RES_IOPORT && start == CONF1_ADDR_PORT))
1280d2dc06caSJohn Baldwin #endif
1281d2dc06caSJohn Baldwin 		{
12827e3343bfSJohn Baldwin 		    AcpiOsFree(devinfo);
12837e3343bfSJohn Baldwin 		    return (0);
12847e3343bfSJohn Baldwin 		}
1285d2dc06caSJohn Baldwin 	    }
12867e3343bfSJohn Baldwin 	    AcpiOsFree(devinfo);
12877e3343bfSJohn Baldwin 	}
12887e3343bfSJohn Baldwin     }
12897e3343bfSJohn Baldwin 
1290ea233199SJohn Baldwin     /* If the resource is already allocated, fail. */
1291ea233199SJohn Baldwin     if (resource_list_busy(rl, type, rid))
1292ea233199SJohn Baldwin 	return (EBUSY);
1293ea233199SJohn Baldwin 
1294ea233199SJohn Baldwin     /* If the resource is already reserved, release it. */
1295ea233199SJohn Baldwin     if (resource_list_reserved(rl, type, rid))
1296ea233199SJohn Baldwin 	resource_list_unreserve(rl, dev, child, type, rid);
1297ea233199SJohn Baldwin 
1298ea233199SJohn Baldwin     /* Add the resource. */
1299ea233199SJohn Baldwin     end = (start + count - 1);
1300ea233199SJohn Baldwin     resource_list_add(rl, type, rid, start, end, count);
1301ea233199SJohn Baldwin 
1302ea233199SJohn Baldwin     /* Don't reserve resources until the system resources are allocated. */
1303ea233199SJohn Baldwin     if (!sc->acpi_resources_reserved)
1304ea233199SJohn Baldwin 	return (0);
1305ea233199SJohn Baldwin 
1306ea233199SJohn Baldwin     /* Don't reserve system resources. */
1307ea233199SJohn Baldwin     if (ACPI_ID_PROBE(dev, child, sysres_ids) != NULL)
1308ea233199SJohn Baldwin 	return (0);
1309ea233199SJohn Baldwin 
1310ea233199SJohn Baldwin     /*
1311ea233199SJohn Baldwin      * Don't reserve IRQ resources.  There are many sticky things to
1312ea233199SJohn Baldwin      * get right otherwise (e.g. IRQs for psm, atkbd, and HPET when
1313ea233199SJohn Baldwin      * using legacy routing).
1314ea233199SJohn Baldwin      */
1315ea233199SJohn Baldwin     if (type == SYS_RES_IRQ)
1316ea233199SJohn Baldwin 	return (0);
1317ea233199SJohn Baldwin 
1318ea233199SJohn Baldwin     /*
1319ea233199SJohn Baldwin      * Reserve the resource.
1320ea233199SJohn Baldwin      *
1321ea233199SJohn Baldwin      * XXX: Ignores failure for now.  Failure here is probably a
1322ea233199SJohn Baldwin      * BIOS/firmware bug?
1323ea233199SJohn Baldwin      */
1324ea233199SJohn Baldwin     resource_list_reserve(rl, dev, child, type, &rid, start, end, count, 0);
1325ea233199SJohn Baldwin     return (0);
1326ea233199SJohn Baldwin }
1327ea233199SJohn Baldwin 
132815e32d5dSMike Smith static struct resource *
132915e32d5dSMike Smith acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
13302dd1bdf1SJustin Hibbits     rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
133115e32d5dSMike Smith {
133295957f62SJohn Baldwin     ACPI_RESOURCE ares;
1333ea233199SJohn Baldwin     struct acpi_device *ad;
133491233413SNate Lawson     struct resource_list_entry *rle;
1335ea233199SJohn Baldwin     struct resource_list *rl;
133691233413SNate Lawson     struct resource *res;
13377915adb5SJustin Hibbits     int isdefault = RMAN_IS_DEFAULT_RANGE(start, end);
133815e2f34fSNate Lawson 
133991233413SNate Lawson     /*
1340ea233199SJohn Baldwin      * First attempt at allocating the resource.  For direct children,
1341ea233199SJohn Baldwin      * use resource_list_alloc() to handle reserved resources.  For
1342f6133e71SJohn Baldwin      * other devices, pass the request up to our parent.
134391233413SNate Lawson      */
1344ea233199SJohn Baldwin     if (bus == device_get_parent(child)) {
1345ea233199SJohn Baldwin 	ad = device_get_ivars(child);
1346ea233199SJohn Baldwin 	rl = &ad->ad_rl;
134791233413SNate Lawson 
1348397c30a8SJohn Baldwin 	/*
1349ea233199SJohn Baldwin 	 * Simulate the behavior of the ISA bus for direct children
1350ea233199SJohn Baldwin 	 * devices.  That is, if a non-default range is specified for
1351ea233199SJohn Baldwin 	 * a resource that doesn't exist, use bus_set_resource() to
1352ea233199SJohn Baldwin 	 * add the resource before allocating it.  Note that these
1353ea233199SJohn Baldwin 	 * resources will not be reserved.
1354397c30a8SJohn Baldwin 	 */
1355ea233199SJohn Baldwin 	if (!isdefault && resource_list_find(rl, type, *rid) == NULL)
1356ea233199SJohn Baldwin 		resource_list_add(rl, type, *rid, start, end, count);
1357ea233199SJohn Baldwin 	res = resource_list_alloc(rl, bus, child, type, rid, start, end, count,
1358ea233199SJohn Baldwin 	    flags);
1359ea233199SJohn Baldwin 	if (res != NULL && type == SYS_RES_IRQ) {
136095957f62SJohn Baldwin 	    /*
136195957f62SJohn Baldwin 	     * Since bus_config_intr() takes immediate effect, we cannot
136295957f62SJohn Baldwin 	     * configure the interrupt associated with a device when we
136395957f62SJohn Baldwin 	     * parse the resources but have to defer it until a driver
136495957f62SJohn Baldwin 	     * actually allocates the interrupt via bus_alloc_resource().
136595957f62SJohn Baldwin 	     *
136695957f62SJohn Baldwin 	     * XXX: Should we handle the lookup failing?
136795957f62SJohn Baldwin 	     */
136895957f62SJohn Baldwin 	    if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
136995957f62SJohn Baldwin 		acpi_config_intr(child, &ares);
137095957f62SJohn Baldwin 	}
137115e2f34fSNate Lawson 
1372ea233199SJohn Baldwin 	/*
1373ea233199SJohn Baldwin 	 * If this is an allocation of the "default" range for a given
1374ea233199SJohn Baldwin 	 * RID, fetch the exact bounds for this resource from the
1375ea233199SJohn Baldwin 	 * resource list entry to try to allocate the range from the
1376ea233199SJohn Baldwin 	 * system resource regions.
1377ea233199SJohn Baldwin 	 */
1378ea233199SJohn Baldwin 	if (res == NULL && isdefault) {
1379ea233199SJohn Baldwin 	    rle = resource_list_find(rl, type, *rid);
1380ea233199SJohn Baldwin 	    if (rle != NULL) {
1381ea233199SJohn Baldwin 		start = rle->start;
1382ea233199SJohn Baldwin 		end = rle->end;
1383ea233199SJohn Baldwin 		count = rle->count;
1384ea233199SJohn Baldwin 	    }
1385ea233199SJohn Baldwin 	}
1386ea233199SJohn Baldwin     } else
1387ea233199SJohn Baldwin 	res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1388ea233199SJohn Baldwin 	    start, end, count, flags);
1389ea233199SJohn Baldwin 
1390ea233199SJohn Baldwin     /*
1391ea233199SJohn Baldwin      * If the first attempt failed and this is an allocation of a
1392ea233199SJohn Baldwin      * specific range, try to satisfy the request via a suballocation
13935d0d779bSJohn Baldwin      * from our system resource regions.
1394ea233199SJohn Baldwin      */
13955d0d779bSJohn Baldwin     if (res == NULL && start + count - 1 == end)
13965d0d779bSJohn Baldwin 	res = acpi_alloc_sysres(child, type, rid, start, end, count, flags);
13975d0d779bSJohn Baldwin     return (res);
13985d0d779bSJohn Baldwin }
13995d0d779bSJohn Baldwin 
14005d0d779bSJohn Baldwin /*
14015d0d779bSJohn Baldwin  * Attempt to allocate a specific resource range from the system
14025d0d779bSJohn Baldwin  * resource ranges.  Note that we only handle memory and I/O port
14035d0d779bSJohn Baldwin  * system resources.
14045d0d779bSJohn Baldwin  */
14055d0d779bSJohn Baldwin struct resource *
14062dd1bdf1SJustin Hibbits acpi_alloc_sysres(device_t child, int type, int *rid, rman_res_t start,
14072dd1bdf1SJustin Hibbits     rman_res_t end, rman_res_t count, u_int flags)
14085d0d779bSJohn Baldwin {
14095d0d779bSJohn Baldwin     struct rman *rm;
14105d0d779bSJohn Baldwin     struct resource *res;
14115d0d779bSJohn Baldwin 
1412ea233199SJohn Baldwin     switch (type) {
1413ea233199SJohn Baldwin     case SYS_RES_IOPORT:
1414ea233199SJohn Baldwin 	rm = &acpi_rman_io;
1415ea233199SJohn Baldwin 	break;
1416ea233199SJohn Baldwin     case SYS_RES_MEMORY:
1417ea233199SJohn Baldwin 	rm = &acpi_rman_mem;
1418ea233199SJohn Baldwin 	break;
1419ea233199SJohn Baldwin     default:
1420ea233199SJohn Baldwin 	return (NULL);
1421ea233199SJohn Baldwin     }
1422ea233199SJohn Baldwin 
14235d0d779bSJohn Baldwin     KASSERT(start + count - 1 == end, ("wildcard resource range"));
1424ea233199SJohn Baldwin     res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1425ea233199SJohn Baldwin 	child);
1426ea233199SJohn Baldwin     if (res == NULL)
1427ea233199SJohn Baldwin 	return (NULL);
1428ea233199SJohn Baldwin 
1429ea233199SJohn Baldwin     rman_set_rid(res, *rid);
1430ea233199SJohn Baldwin 
1431ea233199SJohn Baldwin     /* If requested, activate the resource using the parent's method. */
1432ea233199SJohn Baldwin     if (flags & RF_ACTIVE)
1433ea233199SJohn Baldwin 	if (bus_activate_resource(child, type, *rid, res) != 0) {
1434ea233199SJohn Baldwin 	    rman_release_resource(res);
1435ea233199SJohn Baldwin 	    return (NULL);
1436ea233199SJohn Baldwin 	}
1437ea233199SJohn Baldwin 
143891233413SNate Lawson     return (res);
143915e32d5dSMike Smith }
144015e32d5dSMike Smith 
144115e32d5dSMike Smith static int
1442049dc0d1SJohn Baldwin acpi_is_resource_managed(int type, struct resource *r)
144315e32d5dSMike Smith {
144415e32d5dSMike Smith 
1445397c30a8SJohn Baldwin     /* We only handle memory and IO resources through rman. */
1446397c30a8SJohn Baldwin     switch (type) {
1447397c30a8SJohn Baldwin     case SYS_RES_IOPORT:
1448049dc0d1SJohn Baldwin 	return (rman_is_region_manager(r, &acpi_rman_io));
1449397c30a8SJohn Baldwin     case SYS_RES_MEMORY:
1450049dc0d1SJohn Baldwin 	return (rman_is_region_manager(r, &acpi_rman_mem));
1451397c30a8SJohn Baldwin     }
1452049dc0d1SJohn Baldwin     return (0);
1453049dc0d1SJohn Baldwin }
1454049dc0d1SJohn Baldwin 
1455049dc0d1SJohn Baldwin static int
1456049dc0d1SJohn Baldwin acpi_adjust_resource(device_t bus, device_t child, int type, struct resource *r,
14572dd1bdf1SJustin Hibbits     rman_res_t start, rman_res_t end)
1458049dc0d1SJohn Baldwin {
1459049dc0d1SJohn Baldwin 
1460049dc0d1SJohn Baldwin     if (acpi_is_resource_managed(type, r))
1461049dc0d1SJohn Baldwin 	return (rman_adjust_resource(r, start, end));
1462049dc0d1SJohn Baldwin     return (bus_generic_adjust_resource(bus, child, type, r, start, end));
1463049dc0d1SJohn Baldwin }
1464049dc0d1SJohn Baldwin 
1465049dc0d1SJohn Baldwin static int
1466049dc0d1SJohn Baldwin acpi_release_resource(device_t bus, device_t child, int type, int rid,
1467049dc0d1SJohn Baldwin     struct resource *r)
1468049dc0d1SJohn Baldwin {
1469049dc0d1SJohn Baldwin     int ret;
1470397c30a8SJohn Baldwin 
147191233413SNate Lawson     /*
1472397c30a8SJohn Baldwin      * If this resource belongs to one of our internal managers,
1473ea233199SJohn Baldwin      * deactivate it and release it to the local pool.
147491233413SNate Lawson      */
1475049dc0d1SJohn Baldwin     if (acpi_is_resource_managed(type, r)) {
147691233413SNate Lawson 	if (rman_get_flags(r) & RF_ACTIVE) {
147791233413SNate Lawson 	    ret = bus_deactivate_resource(child, type, rid, r);
147891233413SNate Lawson 	    if (ret != 0)
147991233413SNate Lawson 		return (ret);
148015e32d5dSMike Smith 	}
1481ea233199SJohn Baldwin 	return (rman_release_resource(r));
1482ea233199SJohn Baldwin     }
1483ea233199SJohn Baldwin 
1484ea233199SJohn Baldwin     return (bus_generic_rl_release_resource(bus, child, type, rid, r));
1485ea233199SJohn Baldwin }
148615e32d5dSMike Smith 
14878b28b622SNate Lawson static void
14888b28b622SNate Lawson acpi_delete_resource(device_t bus, device_t child, int type, int rid)
14898b28b622SNate Lawson {
14908b28b622SNate Lawson     struct resource_list *rl;
14918b28b622SNate Lawson 
14928b28b622SNate Lawson     rl = acpi_get_rlist(bus, child);
1493ea233199SJohn Baldwin     if (resource_list_busy(rl, type, rid)) {
1494ea233199SJohn Baldwin 	device_printf(bus, "delete_resource: Resource still owned by child"
1495ea233199SJohn Baldwin 	    " (type=%d, rid=%d)\n", type, rid);
1496ea233199SJohn Baldwin 	return;
1497ea233199SJohn Baldwin     }
1498ea233199SJohn Baldwin     resource_list_unreserve(rl, bus, child, type, rid);
14998b28b622SNate Lawson     resource_list_delete(rl, type, rid);
15008b28b622SNate Lawson }
15018b28b622SNate Lawson 
1502dc750869SNate Lawson /* Allocate an IO port or memory resource, given its GAS. */
1503e1c4bf3fSNate Lawson int
1504e1c4bf3fSNate Lawson acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1505907b6777SNate Lawson     struct resource **res, u_int flags)
1506dc750869SNate Lawson {
1507e1c4bf3fSNate Lawson     int error, res_type;
1508dc750869SNate Lawson 
1509e1c4bf3fSNate Lawson     error = ENOMEM;
15108f118e25SNate Lawson     if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1511e1c4bf3fSNate Lawson 	return (EINVAL);
1512dc750869SNate Lawson 
15138f118e25SNate Lawson     /* We only support memory and IO spaces. */
15142be4e471SJung-uk Kim     switch (gas->SpaceId) {
1515dc750869SNate Lawson     case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1516e1c4bf3fSNate Lawson 	res_type = SYS_RES_MEMORY;
1517dc750869SNate Lawson 	break;
1518dc750869SNate Lawson     case ACPI_ADR_SPACE_SYSTEM_IO:
1519e1c4bf3fSNate Lawson 	res_type = SYS_RES_IOPORT;
1520dc750869SNate Lawson 	break;
1521dc750869SNate Lawson     default:
1522e1c4bf3fSNate Lawson 	return (EOPNOTSUPP);
1523dc750869SNate Lawson     }
1524dc750869SNate Lawson 
15252fe912dfSNate Lawson     /*
1526f45fc848SNate Lawson      * If the register width is less than 8, assume the BIOS author means
1527f45fc848SNate Lawson      * it is a bit field and just allocate a byte.
15282fe912dfSNate Lawson      */
15292be4e471SJung-uk Kim     if (gas->BitWidth && gas->BitWidth < 8)
15302be4e471SJung-uk Kim 	gas->BitWidth = 8;
15312fe912dfSNate Lawson 
15328f118e25SNate Lawson     /* Validate the address after we're sure we support the space. */
15332be4e471SJung-uk Kim     if (gas->Address == 0 || gas->BitWidth == 0)
15348f118e25SNate Lawson 	return (EINVAL);
15358f118e25SNate Lawson 
1536e1c4bf3fSNate Lawson     bus_set_resource(dev, res_type, *rid, gas->Address,
15372be4e471SJung-uk Kim 	gas->BitWidth / 8);
1538907b6777SNate Lawson     *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1539e1c4bf3fSNate Lawson     if (*res != NULL) {
1540e1c4bf3fSNate Lawson 	*type = res_type;
1541e1c4bf3fSNate Lawson 	error = 0;
1542ca2c69c8SNate Lawson     } else
1543ca2c69c8SNate Lawson 	bus_delete_resource(dev, res_type, *rid);
1544ca2c69c8SNate Lawson 
1545e1c4bf3fSNate Lawson     return (error);
1546dc750869SNate Lawson }
1547dc750869SNate Lawson 
1548c796e27bSNate Lawson /* Probe _HID and _CID for compatible ISA PNP ids. */
15491e4925e8SNate Lawson static uint32_t
155032d18aa5SMike Smith acpi_isa_get_logicalid(device_t dev)
1551bc0f2195SMike Smith {
15521e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
1553bc0f2195SMike Smith     ACPI_HANDLE		h;
155492488a57SJung-uk Kim     uint32_t		pnpid;
155532d18aa5SMike Smith 
1556b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
155732d18aa5SMike Smith 
15586fca9360SNate Lawson     /* Fetch and validate the HID. */
155992488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
156092488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
156192488a57SJung-uk Kim 	return_VALUE (0);
156232d18aa5SMike Smith 
156392488a57SJung-uk Kim     pnpid = (devinfo->Valid & ACPI_VALID_HID) != 0 &&
156492488a57SJung-uk Kim 	devinfo->HardwareId.Length >= ACPI_EISAID_STRING_SIZE ?
156592488a57SJung-uk Kim 	PNP_EISAID(devinfo->HardwareId.String) : 0;
156692488a57SJung-uk Kim     AcpiOsFree(devinfo);
1567be2b1797SNate Lawson 
156832d18aa5SMike Smith     return_VALUE (pnpid);
156932d18aa5SMike Smith }
157032d18aa5SMike Smith 
15711e4925e8SNate Lawson static int
15721e4925e8SNate Lawson acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1573b2566207STakanori Watanabe {
15741e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
15758ef1a331SJung-uk Kim     ACPI_PNP_DEVICE_ID	*ids;
1576b2566207STakanori Watanabe     ACPI_HANDLE		h;
15771e4925e8SNate Lawson     uint32_t		*pnpid;
157892488a57SJung-uk Kim     int			i, valid;
1579b2566207STakanori Watanabe 
1580b2566207STakanori Watanabe     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1581b2566207STakanori Watanabe 
15821e4925e8SNate Lawson     pnpid = cids;
1583bd189fe7SNate Lawson 
15841e4925e8SNate Lawson     /* Fetch and validate the CID */
158592488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
158692488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
158792488a57SJung-uk Kim 	return_VALUE (0);
1588b2566207STakanori Watanabe 
158992488a57SJung-uk Kim     if ((devinfo->Valid & ACPI_VALID_CID) == 0) {
159092488a57SJung-uk Kim 	AcpiOsFree(devinfo);
159192488a57SJung-uk Kim 	return_VALUE (0);
1592b2566207STakanori Watanabe     }
1593b2566207STakanori Watanabe 
159492488a57SJung-uk Kim     if (devinfo->CompatibleIdList.Count < count)
159592488a57SJung-uk Kim 	count = devinfo->CompatibleIdList.Count;
159692488a57SJung-uk Kim     ids = devinfo->CompatibleIdList.Ids;
159792488a57SJung-uk Kim     for (i = 0, valid = 0; i < count; i++)
159892488a57SJung-uk Kim 	if (ids[i].Length >= ACPI_EISAID_STRING_SIZE &&
159992488a57SJung-uk Kim 	    strncmp(ids[i].String, "PNP", 3) == 0) {
160092488a57SJung-uk Kim 	    *pnpid++ = PNP_EISAID(ids[i].String);
160192488a57SJung-uk Kim 	    valid++;
160292488a57SJung-uk Kim 	}
160392488a57SJung-uk Kim     AcpiOsFree(devinfo);
160492488a57SJung-uk Kim 
16051e4925e8SNate Lawson     return_VALUE (valid);
16061e4925e8SNate Lawson }
1607b2566207STakanori Watanabe 
1608ce619b2eSNate Lawson static char *
1609ce619b2eSNate Lawson acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1610ce619b2eSNate Lawson {
1611ce619b2eSNate Lawson     ACPI_HANDLE h;
161292488a57SJung-uk Kim     ACPI_OBJECT_TYPE t;
1613ce619b2eSNate Lawson     int i;
1614ce619b2eSNate Lawson 
1615ce619b2eSNate Lawson     h = acpi_get_handle(dev);
161692488a57SJung-uk Kim     if (ids == NULL || h == NULL)
161792488a57SJung-uk Kim 	return (NULL);
161892488a57SJung-uk Kim     t = acpi_get_type(dev);
161992488a57SJung-uk Kim     if (t != ACPI_TYPE_DEVICE && t != ACPI_TYPE_PROCESSOR)
1620ce619b2eSNate Lawson 	return (NULL);
1621ce619b2eSNate Lawson 
1622ce619b2eSNate Lawson     /* Try to match one of the array of IDs with a HID or CID. */
1623ce619b2eSNate Lawson     for (i = 0; ids[i] != NULL; i++) {
1624ce619b2eSNate Lawson 	if (acpi_MatchHid(h, ids[i]))
1625ce619b2eSNate Lawson 	    return (ids[i]);
1626ce619b2eSNate Lawson     }
1627ce619b2eSNate Lawson     return (NULL);
1628ce619b2eSNate Lawson }
1629ce619b2eSNate Lawson 
1630ce619b2eSNate Lawson static ACPI_STATUS
1631ce619b2eSNate Lawson acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1632ce619b2eSNate Lawson     ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1633ce619b2eSNate Lawson {
1634ce619b2eSNate Lawson     ACPI_HANDLE h;
1635ce619b2eSNate Lawson 
1636df8d2a32SNate Lawson     if (dev == NULL)
1637df8d2a32SNate Lawson 	h = ACPI_ROOT_OBJECT;
1638df8d2a32SNate Lawson     else if ((h = acpi_get_handle(dev)) == NULL)
1639ce619b2eSNate Lawson 	return (AE_BAD_PARAMETER);
1640ce619b2eSNate Lawson     return (AcpiEvaluateObject(h, pathname, parameters, ret));
1641ce619b2eSNate Lawson }
1642ce619b2eSNate Lawson 
164362508c53SJohn Baldwin int
164410ce62b9SNate Lawson acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
164510ce62b9SNate Lawson {
164610ce62b9SNate Lawson     struct acpi_softc *sc;
164710ce62b9SNate Lawson     ACPI_HANDLE handle;
164810ce62b9SNate Lawson     ACPI_STATUS status;
164910ce62b9SNate Lawson     char sxd[8];
165010ce62b9SNate Lawson 
165110ce62b9SNate Lawson     handle = acpi_get_handle(dev);
165210ce62b9SNate Lawson 
165310ce62b9SNate Lawson     /*
165410ce62b9SNate Lawson      * XXX If we find these devices, don't try to power them down.
165510ce62b9SNate Lawson      * The serial and IRDA ports on my T23 hang the system when
165610ce62b9SNate Lawson      * set to D3 and it appears that such legacy devices may
165710ce62b9SNate Lawson      * need special handling in their drivers.
165810ce62b9SNate Lawson      */
1659a7a3177fSJung-uk Kim     if (dstate == NULL || handle == NULL ||
166010ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0500") ||
166110ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0501") ||
166210ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0502") ||
166310ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0510") ||
166410ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0511"))
166510ce62b9SNate Lawson 	return (ENXIO);
166610ce62b9SNate Lawson 
166710ce62b9SNate Lawson     /*
1668a7a3177fSJung-uk Kim      * Override next state with the value from _SxD, if present.
1669a7a3177fSJung-uk Kim      * Note illegal _S0D is evaluated because some systems expect this.
167010ce62b9SNate Lawson      */
1671a7a3177fSJung-uk Kim     sc = device_get_softc(bus);
167210ce62b9SNate Lawson     snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
167310ce62b9SNate Lawson     status = acpi_GetInteger(handle, sxd, dstate);
1674a7a3177fSJung-uk Kim     if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
1675a7a3177fSJung-uk Kim 	    device_printf(dev, "failed to get %s on %s: %s\n", sxd,
1676a7a3177fSJung-uk Kim 		acpi_name(handle), AcpiFormatException(status));
1677a7a3177fSJung-uk Kim 	    return (ENXIO);
167810ce62b9SNate Lawson     }
167910ce62b9SNate Lawson 
1680a7a3177fSJung-uk Kim     return (0);
168110ce62b9SNate Lawson }
168210ce62b9SNate Lawson 
1683df8d2a32SNate Lawson /* Callback arg for our implementation of walking the namespace. */
1684df8d2a32SNate Lawson struct acpi_device_scan_ctx {
1685df8d2a32SNate Lawson     acpi_scan_cb_t	user_fn;
1686df8d2a32SNate Lawson     void		*arg;
1687df8d2a32SNate Lawson     ACPI_HANDLE		parent;
1688df8d2a32SNate Lawson };
1689df8d2a32SNate Lawson 
1690ce619b2eSNate Lawson static ACPI_STATUS
1691df8d2a32SNate Lawson acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1692df8d2a32SNate Lawson {
1693df8d2a32SNate Lawson     struct acpi_device_scan_ctx *ctx;
1694df8d2a32SNate Lawson     device_t dev, old_dev;
1695df8d2a32SNate Lawson     ACPI_STATUS status;
1696df8d2a32SNate Lawson     ACPI_OBJECT_TYPE type;
1697df8d2a32SNate Lawson 
1698df8d2a32SNate Lawson     /*
1699df8d2a32SNate Lawson      * Skip this device if we think we'll have trouble with it or it is
1700df8d2a32SNate Lawson      * the parent where the scan began.
1701df8d2a32SNate Lawson      */
1702df8d2a32SNate Lawson     ctx = (struct acpi_device_scan_ctx *)arg;
1703df8d2a32SNate Lawson     if (acpi_avoid(h) || h == ctx->parent)
1704df8d2a32SNate Lawson 	return (AE_OK);
1705df8d2a32SNate Lawson 
1706df8d2a32SNate Lawson     /* If this is not a valid device type (e.g., a method), skip it. */
1707df8d2a32SNate Lawson     if (ACPI_FAILURE(AcpiGetType(h, &type)))
1708df8d2a32SNate Lawson 	return (AE_OK);
1709df8d2a32SNate Lawson     if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1710df8d2a32SNate Lawson 	type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1711df8d2a32SNate Lawson 	return (AE_OK);
1712df8d2a32SNate Lawson 
1713df8d2a32SNate Lawson     /*
1714df8d2a32SNate Lawson      * Call the user function with the current device.  If it is unchanged
1715df8d2a32SNate Lawson      * afterwards, return.  Otherwise, we update the handle to the new dev.
1716df8d2a32SNate Lawson      */
1717df8d2a32SNate Lawson     old_dev = acpi_get_device(h);
1718df8d2a32SNate Lawson     dev = old_dev;
1719df8d2a32SNate Lawson     status = ctx->user_fn(h, &dev, level, ctx->arg);
1720df8d2a32SNate Lawson     if (ACPI_FAILURE(status) || old_dev == dev)
1721df8d2a32SNate Lawson 	return (status);
1722df8d2a32SNate Lawson 
1723df8d2a32SNate Lawson     /* Remove the old child and its connection to the handle. */
1724df8d2a32SNate Lawson     if (old_dev != NULL) {
1725df8d2a32SNate Lawson 	device_delete_child(device_get_parent(old_dev), old_dev);
1726df8d2a32SNate Lawson 	AcpiDetachData(h, acpi_fake_objhandler);
1727df8d2a32SNate Lawson     }
1728df8d2a32SNate Lawson 
1729df8d2a32SNate Lawson     /* Recreate the handle association if the user created a device. */
1730df8d2a32SNate Lawson     if (dev != NULL)
1731df8d2a32SNate Lawson 	AcpiAttachData(h, acpi_fake_objhandler, dev);
1732df8d2a32SNate Lawson 
1733df8d2a32SNate Lawson     return (AE_OK);
1734df8d2a32SNate Lawson }
1735df8d2a32SNate Lawson 
1736df8d2a32SNate Lawson static ACPI_STATUS
1737df8d2a32SNate Lawson acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1738df8d2a32SNate Lawson     acpi_scan_cb_t user_fn, void *arg)
1739ce619b2eSNate Lawson {
1740ce619b2eSNate Lawson     ACPI_HANDLE h;
1741df8d2a32SNate Lawson     struct acpi_device_scan_ctx ctx;
1742ce619b2eSNate Lawson 
1743df8d2a32SNate Lawson     if (acpi_disabled("children"))
1744df8d2a32SNate Lawson 	return (AE_OK);
1745df8d2a32SNate Lawson 
1746df8d2a32SNate Lawson     if (dev == NULL)
1747df8d2a32SNate Lawson 	h = ACPI_ROOT_OBJECT;
1748df8d2a32SNate Lawson     else if ((h = acpi_get_handle(dev)) == NULL)
1749ce619b2eSNate Lawson 	return (AE_BAD_PARAMETER);
1750df8d2a32SNate Lawson     ctx.user_fn = user_fn;
1751df8d2a32SNate Lawson     ctx.arg = arg;
1752df8d2a32SNate Lawson     ctx.parent = h;
1753df8d2a32SNate Lawson     return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
17542272d050SJung-uk Kim 	acpi_device_scan_cb, NULL, &ctx, NULL));
1755ce619b2eSNate Lawson }
1756ce619b2eSNate Lawson 
175710ce62b9SNate Lawson /*
175810ce62b9SNate Lawson  * Even though ACPI devices are not PCI, we use the PCI approach for setting
175910ce62b9SNate Lawson  * device power states since it's close enough to ACPI.
176010ce62b9SNate Lawson  */
176110ce62b9SNate Lawson static int
1762a7a3177fSJung-uk Kim acpi_set_powerstate(device_t child, int state)
176310ce62b9SNate Lawson {
176410ce62b9SNate Lawson     ACPI_HANDLE h;
176510ce62b9SNate Lawson     ACPI_STATUS status;
176610ce62b9SNate Lawson 
176710ce62b9SNate Lawson     h = acpi_get_handle(child);
1768a0e73a12SJung-uk Kim     if (state < ACPI_STATE_D0 || state > ACPI_D_STATES_MAX)
176910ce62b9SNate Lawson 	return (EINVAL);
177010ce62b9SNate Lawson     if (h == NULL)
177110ce62b9SNate Lawson 	return (0);
177210ce62b9SNate Lawson 
177310ce62b9SNate Lawson     /* Ignore errors if the power methods aren't present. */
177410ce62b9SNate Lawson     status = acpi_pwr_switch_consumer(h, state);
1775a7a3177fSJung-uk Kim     if (ACPI_SUCCESS(status)) {
1776a7a3177fSJung-uk Kim 	if (bootverbose)
1777a7a3177fSJung-uk Kim 	    device_printf(child, "set ACPI power state D%d on %s\n",
1778a7a3177fSJung-uk Kim 		state, acpi_name(h));
1779a7a3177fSJung-uk Kim     } else if (status != AE_NOT_FOUND)
1780a7a3177fSJung-uk Kim 	device_printf(child,
1781a7a3177fSJung-uk Kim 	    "failed to set ACPI power state D%d on %s: %s\n", state,
1782a7a3177fSJung-uk Kim 	    acpi_name(h), AcpiFormatException(status));
178310ce62b9SNate Lawson 
1784a7a3177fSJung-uk Kim     return (0);
178510ce62b9SNate Lawson }
178610ce62b9SNate Lawson 
178732d18aa5SMike Smith static int
178832d18aa5SMike Smith acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
178932d18aa5SMike Smith {
17901e4925e8SNate Lawson     int			result, cid_count, i;
17911e4925e8SNate Lawson     uint32_t		lid, cids[8];
1792bc0f2195SMike Smith 
1793b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1794bc0f2195SMike Smith 
1795bc0f2195SMike Smith     /*
1796bc0f2195SMike Smith      * ISA-style drivers attached to ACPI may persist and
1797bc0f2195SMike Smith      * probe manually if we return ENOENT.  We never want
1798bc0f2195SMike Smith      * that to happen, so don't ever return it.
1799bc0f2195SMike Smith      */
1800bc0f2195SMike Smith     result = ENXIO;
1801bc0f2195SMike Smith 
1802be2b1797SNate Lawson     /* Scan the supplied IDs for a match */
1803b2566207STakanori Watanabe     lid = acpi_isa_get_logicalid(child);
18041e4925e8SNate Lawson     cid_count = acpi_isa_get_compatid(child, cids, 8);
1805bc0f2195SMike Smith     while (ids && ids->ip_id) {
18061e4925e8SNate Lawson 	if (lid == ids->ip_id) {
1807bc0f2195SMike Smith 	    result = 0;
1808bc0f2195SMike Smith 	    goto out;
1809bc0f2195SMike Smith 	}
18101e4925e8SNate Lawson 	for (i = 0; i < cid_count; i++) {
18111e4925e8SNate Lawson 	    if (cids[i] == ids->ip_id) {
18121e4925e8SNate Lawson 		result = 0;
18131e4925e8SNate Lawson 		goto out;
18141e4925e8SNate Lawson 	    }
18151e4925e8SNate Lawson 	}
1816bc0f2195SMike Smith 	ids++;
1817bc0f2195SMike Smith     }
1818be2b1797SNate Lawson 
1819bc0f2195SMike Smith  out:
18209e0dd54fSNate Lawson     if (result == 0 && ids->ip_desc)
18219e0dd54fSNate Lawson 	device_set_desc(child, ids->ip_desc);
18229e0dd54fSNate Lawson 
1823bc0f2195SMike Smith     return_VALUE (result);
1824bc0f2195SMike Smith }
1825bc0f2195SMike Smith 
1826d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
1827d320e05cSJohn Baldwin /*
1828d320e05cSJohn Baldwin  * Look for a MCFG table.  If it is present, use the settings for
1829d320e05cSJohn Baldwin  * domain (segment) 0 to setup PCI config space access via the memory
1830d320e05cSJohn Baldwin  * map.
1831d320e05cSJohn Baldwin  */
1832d320e05cSJohn Baldwin static void
1833d320e05cSJohn Baldwin acpi_enable_pcie(void)
1834d320e05cSJohn Baldwin {
1835d320e05cSJohn Baldwin 	ACPI_TABLE_HEADER *hdr;
1836d320e05cSJohn Baldwin 	ACPI_MCFG_ALLOCATION *alloc, *end;
1837d320e05cSJohn Baldwin 	ACPI_STATUS status;
1838d320e05cSJohn Baldwin 
1839d320e05cSJohn Baldwin 	status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1840d320e05cSJohn Baldwin 	if (ACPI_FAILURE(status))
1841d320e05cSJohn Baldwin 		return;
1842d320e05cSJohn Baldwin 
1843d320e05cSJohn Baldwin 	end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1844d320e05cSJohn Baldwin 	alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1845d320e05cSJohn Baldwin 	while (alloc < end) {
1846d320e05cSJohn Baldwin 		if (alloc->PciSegment == 0) {
1847d320e05cSJohn Baldwin 			pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1848d320e05cSJohn Baldwin 			    alloc->EndBusNumber);
1849d320e05cSJohn Baldwin 			return;
1850d320e05cSJohn Baldwin 		}
1851d320e05cSJohn Baldwin 		alloc++;
1852d320e05cSJohn Baldwin 	}
1853d320e05cSJohn Baldwin }
1854d320e05cSJohn Baldwin #endif
1855d320e05cSJohn Baldwin 
1856bc0f2195SMike Smith /*
185733332dc2SNate Lawson  * Scan all of the ACPI namespace and attach child devices.
185815e32d5dSMike Smith  *
185933332dc2SNate Lawson  * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
186033332dc2SNate Lawson  * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
186133332dc2SNate Lawson  * However, in violation of the spec, some systems place their PCI link
186233332dc2SNate Lawson  * devices in \, so we have to walk the whole namespace.  We check the
186333332dc2SNate Lawson  * type of namespace nodes, so this should be ok.
186415e32d5dSMike Smith  */
186515e32d5dSMike Smith static void
186615e32d5dSMike Smith acpi_probe_children(device_t bus)
186715e32d5dSMike Smith {
186815e32d5dSMike Smith 
1869b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
18700ae55423SMike Smith 
187115e32d5dSMike Smith     /*
187215e32d5dSMike Smith      * Scan the namespace and insert placeholders for all the devices that
1873edc13633SNate Lawson      * we find.  We also probe/attach any early devices.
187415e32d5dSMike Smith      *
187515e32d5dSMike Smith      * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1876be2b1797SNate Lawson      * we want to create nodes for all devices, not just those that are
1877be2b1797SNate Lawson      * currently present. (This assumes that we don't want to create/remove
1878be2b1797SNate Lawson      * devices as they appear, which might be smarter.)
187915e32d5dSMike Smith      */
18804c1cdee6SMike Smith     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
188133332dc2SNate Lawson     AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child,
18822272d050SJung-uk Kim 	NULL, bus, NULL);
188315e32d5dSMike Smith 
1884adad4744SNate Lawson     /* Pre-allocate resources for our rman from any sysresource devices. */
1885adad4744SNate Lawson     acpi_sysres_alloc(bus);
1886adad4744SNate Lawson 
1887ea233199SJohn Baldwin     /* Reserve resources already allocated to children. */
1888ea233199SJohn Baldwin     acpi_reserve_resources(bus);
1889ea233199SJohn Baldwin 
1890edc13633SNate Lawson     /* Create any static children by calling device identify methods. */
1891edc13633SNate Lawson     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1892edc13633SNate Lawson     bus_generic_probe(bus);
1893edc13633SNate Lawson 
18945e66b8e2SJohn Baldwin     /* Probe/attach all children, created statically and from the namespace. */
18950430ba9eSAndriy Gapon     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "acpi bus_generic_attach\n"));
189615e32d5dSMike Smith     bus_generic_attach(bus);
18970ae55423SMike Smith 
189888a79fc0SNate Lawson     /* Attach wake sysctls. */
18995c9ea25eSNate Lawson     acpi_wake_sysctl_walk(bus);
190088a79fc0SNate Lawson 
1901bc0f2195SMike Smith     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
19020ae55423SMike Smith     return_VOID;
190315e32d5dSMike Smith }
190415e32d5dSMike Smith 
1905b82ca9a9SNate Lawson /*
1906d227204dSJohn Baldwin  * Determine the probe order for a given device.
1907b82ca9a9SNate Lawson  */
1908d227204dSJohn Baldwin static void
1909b82ca9a9SNate Lawson acpi_probe_order(ACPI_HANDLE handle, int *order)
191091233413SNate Lawson {
1911463e0f91SJohn Baldwin 	ACPI_OBJECT_TYPE type;
191291233413SNate Lawson 
1913b82ca9a9SNate Lawson 	/*
1914404b0d10SJung-uk Kim 	 * 0. CPUs
1915404b0d10SJung-uk Kim 	 * 1. I/O port and memory system resource holders
1916404b0d10SJung-uk Kim 	 * 2. Clocks and timers (to handle early accesses)
1917b1f9b996SAndriy Gapon 	 * 3. Embedded controllers (to handle early accesses)
1918b1f9b996SAndriy Gapon 	 * 4. PCI Link Devices
1919b82ca9a9SNate Lawson 	 */
1920463e0f91SJohn Baldwin 	AcpiGetType(handle, &type);
1921aa835160SAndriy Gapon 	if (type == ACPI_TYPE_PROCESSOR)
1922404b0d10SJung-uk Kim 		*order = 0;
1923404b0d10SJung-uk Kim 	else if (acpi_MatchHid(handle, "PNP0C01") ||
1924404b0d10SJung-uk Kim 	    acpi_MatchHid(handle, "PNP0C02"))
192591233413SNate Lawson 		*order = 1;
1926404b0d10SJung-uk Kim 	else if (acpi_MatchHid(handle, "PNP0100") ||
1927404b0d10SJung-uk Kim 	    acpi_MatchHid(handle, "PNP0103") ||
1928404b0d10SJung-uk Kim 	    acpi_MatchHid(handle, "PNP0B00"))
192991233413SNate Lawson 		*order = 2;
1930aa835160SAndriy Gapon 	else if (acpi_MatchHid(handle, "PNP0C09"))
1931b460c6f8SJohn Baldwin 		*order = 3;
1932aa835160SAndriy Gapon 	else if (acpi_MatchHid(handle, "PNP0C0F"))
1933aa835160SAndriy Gapon 		*order = 4;
193491233413SNate Lawson }
193591233413SNate Lawson 
193615e32d5dSMike Smith /*
193715e32d5dSMike Smith  * Evaluate a child device and determine whether we might attach a device to
193815e32d5dSMike Smith  * it.
193915e32d5dSMike Smith  */
194015e32d5dSMike Smith static ACPI_STATUS
194115e32d5dSMike Smith acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
194215e32d5dSMike Smith {
19435a77b11bSJung-uk Kim     struct acpi_prw_data prw;
194415e32d5dSMike Smith     ACPI_OBJECT_TYPE type;
1945858a52f4SMitsuru IWASAKI     ACPI_HANDLE h;
194633332dc2SNate Lawson     device_t bus, child;
1947495a4144SJung-uk Kim     char *handle_str;
1948e4cd9dcfSJohn Baldwin     int order;
194915e32d5dSMike Smith 
1950b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
19510ae55423SMike Smith 
1952495a4144SJung-uk Kim     if (acpi_disabled("children"))
1953495a4144SJung-uk Kim 	return_ACPI_STATUS (AE_OK);
1954495a4144SJung-uk Kim 
1955be2b1797SNate Lawson     /* Skip this device if we think we'll have trouble with it. */
19560ae55423SMike Smith     if (acpi_avoid(handle))
19570ae55423SMike Smith 	return_ACPI_STATUS (AE_OK);
19580ae55423SMike Smith 
195991233413SNate Lawson     bus = (device_t)context;
1960b53f2771SMike Smith     if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1961495a4144SJung-uk Kim 	handle_str = acpi_name(handle);
196215e32d5dSMike Smith 	switch (type) {
196315e32d5dSMike Smith 	case ACPI_TYPE_DEVICE:
1964495a4144SJung-uk Kim 	    /*
1965495a4144SJung-uk Kim 	     * Since we scan from \, be sure to skip system scope objects.
1966495a4144SJung-uk Kim 	     * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
1967affa1826SJung-uk Kim 	     * BIOS bugs.  For example, \_SB_ is to allow \_SB_._INI to be run
1968495a4144SJung-uk Kim 	     * during the intialization and \_TZ_ is to support Notify() on it.
1969495a4144SJung-uk Kim 	     */
1970495a4144SJung-uk Kim 	    if (strcmp(handle_str, "\\_SB_") == 0 ||
1971495a4144SJung-uk Kim 		strcmp(handle_str, "\\_TZ_") == 0)
1972495a4144SJung-uk Kim 		break;
19735a77b11bSJung-uk Kim 	    if (acpi_parse_prw(handle, &prw) == 0)
19745a77b11bSJung-uk Kim 		AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
1975183c8af3SJohn Baldwin 
1976183c8af3SJohn Baldwin 	    /*
1977183c8af3SJohn Baldwin 	     * Ignore devices that do not have a _HID or _CID.  They should
1978183c8af3SJohn Baldwin 	     * be discovered by other buses (e.g. the PCI bus driver).
1979183c8af3SJohn Baldwin 	     */
1980183c8af3SJohn Baldwin 	    if (!acpi_has_hid(handle))
1981183c8af3SJohn Baldwin 		break;
1982495a4144SJung-uk Kim 	    /* FALLTHROUGH */
198315e32d5dSMike Smith 	case ACPI_TYPE_PROCESSOR:
198415e32d5dSMike Smith 	case ACPI_TYPE_THERMAL:
198515e32d5dSMike Smith 	case ACPI_TYPE_POWER:
198633332dc2SNate Lawson 	    /*
1987463e0f91SJohn Baldwin 	     * Create a placeholder device for this node.  Sort the
1988463e0f91SJohn Baldwin 	     * placeholder so that the probe/attach passes will run
1989463e0f91SJohn Baldwin 	     * breadth-first.  Orders less than ACPI_DEV_BASE_ORDER
1990463e0f91SJohn Baldwin 	     * are reserved for special objects (i.e., system
1991b1f9b996SAndriy Gapon 	     * resources).
199215e32d5dSMike Smith 	     */
199333332dc2SNate Lawson 	    ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1994404b0d10SJung-uk Kim 	    order = level * 10 + ACPI_DEV_BASE_ORDER;
1995da72d149SNate Lawson 	    acpi_probe_order(handle, &order);
1996e4cd9dcfSJohn Baldwin 	    child = BUS_ADD_CHILD(bus, order, NULL, -1);
1997bc0f2195SMike Smith 	    if (child == NULL)
1998bc0f2195SMike Smith 		break;
199959a890e6SNate Lawson 
200059a890e6SNate Lawson 	    /* Associate the handle with the device_t and vice versa. */
200115e32d5dSMike Smith 	    acpi_set_handle(child, handle);
200259a890e6SNate Lawson 	    AcpiAttachData(handle, acpi_fake_objhandler, child);
2003bc0f2195SMike Smith 
2004bc0f2195SMike Smith 	    /*
2005b519f9d6SMike Smith 	     * Check that the device is present.  If it's not present,
2006b519f9d6SMike Smith 	     * leave it disabled (so that we have a device_t attached to
2007b519f9d6SMike Smith 	     * the handle, but we don't probe it).
2008893f750aSNate Lawson 	     *
2009893f750aSNate Lawson 	     * XXX PCI link devices sometimes report "present" but not
2010893f750aSNate Lawson 	     * "functional" (i.e. if disabled).  Go ahead and probe them
2011893f750aSNate Lawson 	     * anyway since we may enable them later.
2012b519f9d6SMike Smith 	     */
2013858a52f4SMitsuru IWASAKI 	    if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
2014858a52f4SMitsuru IWASAKI 		/* Never disable PCI link devices. */
2015858a52f4SMitsuru IWASAKI 		if (acpi_MatchHid(handle, "PNP0C0F"))
2016858a52f4SMitsuru IWASAKI 		    break;
2017858a52f4SMitsuru IWASAKI 		/*
2018858a52f4SMitsuru IWASAKI 		 * Docking stations should remain enabled since the system
2019858a52f4SMitsuru IWASAKI 		 * may be undocked at boot.
2020858a52f4SMitsuru IWASAKI 		 */
2021858a52f4SMitsuru IWASAKI 		if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
2022858a52f4SMitsuru IWASAKI 		    break;
2023858a52f4SMitsuru IWASAKI 
2024b519f9d6SMike Smith 		device_disable(child);
2025b519f9d6SMike Smith 		break;
2026b519f9d6SMike Smith 	    }
2027b519f9d6SMike Smith 
2028b519f9d6SMike Smith 	    /*
2029bc0f2195SMike Smith 	     * Get the device's resource settings and attach them.
2030bc0f2195SMike Smith 	     * Note that if the device has _PRS but no _CRS, we need
2031bc0f2195SMike Smith 	     * to decide when it's appropriate to try to configure the
2032bc0f2195SMike Smith 	     * device.  Ignore the return value here; it's OK for the
2033bc0f2195SMike Smith 	     * device not to have any resources.
2034bc0f2195SMike Smith 	     */
203572ad60adSNate Lawson 	    acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
20360ae55423SMike Smith 	    break;
203715e32d5dSMike Smith 	}
203815e32d5dSMike Smith     }
2039be2b1797SNate Lawson 
20400ae55423SMike Smith     return_ACPI_STATUS (AE_OK);
204115e32d5dSMike Smith }
204215e32d5dSMike Smith 
204359a890e6SNate Lawson /*
204459a890e6SNate Lawson  * AcpiAttachData() requires an object handler but never uses it.  This is a
204559a890e6SNate Lawson  * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
204659a890e6SNate Lawson  */
204759a890e6SNate Lawson void
204892488a57SJung-uk Kim acpi_fake_objhandler(ACPI_HANDLE h, void *data)
204959a890e6SNate Lawson {
205059a890e6SNate Lawson }
205159a890e6SNate Lawson 
205215e32d5dSMike Smith static void
205315e32d5dSMike Smith acpi_shutdown_final(void *arg, int howto)
205415e32d5dSMike Smith {
20552d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
205671804adcSJung-uk Kim     register_t intr;
2057d33f4987STakanori Watanabe     ACPI_STATUS status;
2058eeb3a05fSNate Lawson 
2059eeb3a05fSNate Lawson     /*
206080f0e4c2SNate Lawson      * XXX Shutdown code should only run on the BSP (cpuid 0).
206180f0e4c2SNate Lawson      * Some chipsets do not power off the system correctly if called from
206280f0e4c2SNate Lawson      * an AP.
2063eeb3a05fSNate Lawson      */
2064eeb3a05fSNate Lawson     if ((howto & RB_POWEROFF) != 0) {
2065904bf0c2SNate Lawson 	status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
2066904bf0c2SNate Lawson 	if (ACPI_FAILURE(status)) {
20672d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2068904bf0c2SNate Lawson 		AcpiFormatException(status));
2069904bf0c2SNate Lawson 	    return;
2070904bf0c2SNate Lawson 	}
20712d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev, "Powering system off\n");
207271804adcSJung-uk Kim 	intr = intr_disable();
20731df130f1SJung-uk Kim 	status = AcpiEnterSleepState(ACPI_STATE_S5);
207471804adcSJung-uk Kim 	if (ACPI_FAILURE(status)) {
207571804adcSJung-uk Kim 	    intr_restore(intr);
20762d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "power-off failed - %s\n",
20772d0c82e8SJung-uk Kim 		AcpiFormatException(status));
207871804adcSJung-uk Kim 	} else {
207915e32d5dSMike Smith 	    DELAY(1000000);
208071804adcSJung-uk Kim 	    intr_restore(intr);
20812d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "power-off failed - timeout\n");
208215e32d5dSMike Smith 	}
2083ac731af5SJung-uk Kim     } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) {
2084d85e6785SNate Lawson 	/* Reboot using the reset register. */
2085ac731af5SJung-uk Kim 	status = AcpiReset();
2086ac731af5SJung-uk Kim 	if (ACPI_SUCCESS(status)) {
208787a500cdSNate Lawson 	    DELAY(1000000);
20882d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "reset failed - timeout\n");
2089ac731af5SJung-uk Kim 	} else if (status != AE_NOT_EXIST)
2090ac731af5SJung-uk Kim 	    device_printf(sc->acpi_dev, "reset failed - %s\n",
2091ac731af5SJung-uk Kim 		AcpiFormatException(status));
2092d85e6785SNate Lawson     } else if (sc->acpi_do_disable && panicstr == NULL) {
2093d85e6785SNate Lawson 	/*
2094d85e6785SNate Lawson 	 * Only disable ACPI if the user requested.  On some systems, writing
2095d85e6785SNate Lawson 	 * the disable value to SMI_CMD hangs the system.
2096d85e6785SNate Lawson 	 */
20972d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev, "Shutting down\n");
209880f0e4c2SNate Lawson 	AcpiTerminate();
209980f0e4c2SNate Lawson     }
210015e32d5dSMike Smith }
210115e32d5dSMike Smith 
210213d4f7baSMitsuru IWASAKI static void
210313d4f7baSMitsuru IWASAKI acpi_enable_fixed_events(struct acpi_softc *sc)
210413d4f7baSMitsuru IWASAKI {
210513d4f7baSMitsuru IWASAKI     static int	first_time = 1;
210613d4f7baSMitsuru IWASAKI 
210713d4f7baSMitsuru IWASAKI     /* Enable and clear fixed events and install handlers. */
21082be4e471SJung-uk Kim     if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
210959ddeb18SNate Lawson 	AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
211013d4f7baSMitsuru IWASAKI 	AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
211133febf93SNate Lawson 				     acpi_event_power_button_sleep, sc);
2112be2b1797SNate Lawson 	if (first_time)
21136c0e8467SNate Lawson 	    device_printf(sc->acpi_dev, "Power Button (fixed)\n");
211413d4f7baSMitsuru IWASAKI     }
21152be4e471SJung-uk Kim     if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
211659ddeb18SNate Lawson 	AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
211713d4f7baSMitsuru IWASAKI 	AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
211833febf93SNate Lawson 				     acpi_event_sleep_button_sleep, sc);
2119be2b1797SNate Lawson 	if (first_time)
21206c0e8467SNate Lawson 	    device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
212113d4f7baSMitsuru IWASAKI     }
212213d4f7baSMitsuru IWASAKI 
212313d4f7baSMitsuru IWASAKI     first_time = 0;
212413d4f7baSMitsuru IWASAKI }
212513d4f7baSMitsuru IWASAKI 
212615e32d5dSMike Smith /*
2127c5ba0be4SMike Smith  * Returns true if the device is actually present and should
2128c5ba0be4SMike Smith  * be attached to.  This requires the present, enabled, UI-visible
2129c5ba0be4SMike Smith  * and diagnostics-passed bits to be set.
2130c5ba0be4SMike Smith  */
2131c5ba0be4SMike Smith BOOLEAN
2132c5ba0be4SMike Smith acpi_DeviceIsPresent(device_t dev)
2133c5ba0be4SMike Smith {
21341e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
2135c5ba0be4SMike Smith     ACPI_HANDLE		h;
213692488a57SJung-uk Kim     BOOLEAN		present;
2137c5ba0be4SMike Smith 
213892488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
213992488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2140c5ba0be4SMike Smith 	return (FALSE);
2141be2b1797SNate Lawson 
2142be2b1797SNate Lawson     /* If no _STA method, must be present */
214392488a57SJung-uk Kim     present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
214492488a57SJung-uk Kim 	ACPI_DEVICE_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
2145be2b1797SNate Lawson 
214692488a57SJung-uk Kim     AcpiOsFree(devinfo);
214792488a57SJung-uk Kim     return (present);
2148c5ba0be4SMike Smith }
2149c5ba0be4SMike Smith 
2150c5ba0be4SMike Smith /*
2151b53f2771SMike Smith  * Returns true if the battery is actually present and inserted.
2152b53f2771SMike Smith  */
2153b53f2771SMike Smith BOOLEAN
2154b53f2771SMike Smith acpi_BatteryIsPresent(device_t dev)
2155b53f2771SMike Smith {
21561e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
2157b53f2771SMike Smith     ACPI_HANDLE		h;
215892488a57SJung-uk Kim     BOOLEAN		present;
2159b53f2771SMike Smith 
216092488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
216192488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2162b53f2771SMike Smith 	return (FALSE);
2163be2b1797SNate Lawson 
2164be2b1797SNate Lawson     /* If no _STA method, must be present */
216592488a57SJung-uk Kim     present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
216692488a57SJung-uk Kim 	ACPI_BATTERY_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
2167be2b1797SNate Lawson 
216892488a57SJung-uk Kim     AcpiOsFree(devinfo);
216992488a57SJung-uk Kim     return (present);
2170b53f2771SMike Smith }
2171b53f2771SMike Smith 
2172b53f2771SMike Smith /*
2173183c8af3SJohn Baldwin  * Returns true if a device has at least one valid device ID.
2174183c8af3SJohn Baldwin  */
2175183c8af3SJohn Baldwin static BOOLEAN
2176183c8af3SJohn Baldwin acpi_has_hid(ACPI_HANDLE h)
2177183c8af3SJohn Baldwin {
2178183c8af3SJohn Baldwin     ACPI_DEVICE_INFO	*devinfo;
2179183c8af3SJohn Baldwin     BOOLEAN		ret;
2180183c8af3SJohn Baldwin 
2181183c8af3SJohn Baldwin     if (h == NULL ||
2182183c8af3SJohn Baldwin 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2183183c8af3SJohn Baldwin 	return (FALSE);
2184183c8af3SJohn Baldwin 
2185183c8af3SJohn Baldwin     ret = FALSE;
2186183c8af3SJohn Baldwin     if ((devinfo->Valid & ACPI_VALID_HID) != 0)
2187183c8af3SJohn Baldwin 	ret = TRUE;
2188183c8af3SJohn Baldwin     else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
2189183c8af3SJohn Baldwin 	if (devinfo->CompatibleIdList.Count > 0)
2190183c8af3SJohn Baldwin 	    ret = TRUE;
2191183c8af3SJohn Baldwin 
2192183c8af3SJohn Baldwin     AcpiOsFree(devinfo);
2193183c8af3SJohn Baldwin     return (ret);
2194183c8af3SJohn Baldwin }
2195183c8af3SJohn Baldwin 
2196183c8af3SJohn Baldwin /*
219791233413SNate Lawson  * Match a HID string against a handle
219815e32d5dSMike Smith  */
21993c4c08dcSAlexander Motin BOOLEAN
2200ce619b2eSNate Lawson acpi_MatchHid(ACPI_HANDLE h, const char *hid)
220115e32d5dSMike Smith {
22021e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
220392488a57SJung-uk Kim     BOOLEAN		ret;
220492488a57SJung-uk Kim     int			i;
220592488a57SJung-uk Kim 
220692488a57SJung-uk Kim     if (hid == NULL || h == NULL ||
220792488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
220892488a57SJung-uk Kim 	return (FALSE);
220915e32d5dSMike Smith 
22101e4925e8SNate Lawson     ret = FALSE;
2211c59c9a8eSJohn Baldwin     if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
221292488a57SJung-uk Kim 	strcmp(hid, devinfo->HardwareId.String) == 0)
22131e4925e8SNate Lawson 	    ret = TRUE;
221492488a57SJung-uk Kim     else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
221592488a57SJung-uk Kim 	for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
221692488a57SJung-uk Kim 	    if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
22171e4925e8SNate Lawson 		ret = TRUE;
22181e4925e8SNate Lawson 		break;
22191e4925e8SNate Lawson 	    }
22201e4925e8SNate Lawson 	}
2221be2b1797SNate Lawson 
222292488a57SJung-uk Kim     AcpiOsFree(devinfo);
22231e4925e8SNate Lawson     return (ret);
222415e32d5dSMike Smith }
222515e32d5dSMike Smith 
222615e32d5dSMike Smith /*
2227c5ba0be4SMike Smith  * Return the handle of a named object within our scope, ie. that of (parent)
2228c5ba0be4SMike Smith  * or one if its parents.
2229c5ba0be4SMike Smith  */
2230c5ba0be4SMike Smith ACPI_STATUS
2231c5ba0be4SMike Smith acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
2232c5ba0be4SMike Smith {
2233c5ba0be4SMike Smith     ACPI_HANDLE		r;
2234c5ba0be4SMike Smith     ACPI_STATUS		status;
2235c5ba0be4SMike Smith 
2236be2b1797SNate Lawson     /* Walk back up the tree to the root */
2237c5ba0be4SMike Smith     for (;;) {
2238be2b1797SNate Lawson 	status = AcpiGetHandle(parent, path, &r);
2239be2b1797SNate Lawson 	if (ACPI_SUCCESS(status)) {
2240c5ba0be4SMike Smith 	    *result = r;
2241c5ba0be4SMike Smith 	    return (AE_OK);
2242c5ba0be4SMike Smith 	}
2243bee4aa4aSNate Lawson 	/* XXX Return error here? */
2244c5ba0be4SMike Smith 	if (status != AE_NOT_FOUND)
2245c5ba0be4SMike Smith 	    return (AE_OK);
2246b53f2771SMike Smith 	if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
2247c5ba0be4SMike Smith 	    return (AE_NOT_FOUND);
2248c5ba0be4SMike Smith 	parent = r;
2249c5ba0be4SMike Smith     }
2250c5ba0be4SMike Smith }
2251c5ba0be4SMike Smith 
2252c5ba0be4SMike Smith /*
2253c5ba0be4SMike Smith  * Allocate a buffer with a preset data size.
2254c5ba0be4SMike Smith  */
2255c5ba0be4SMike Smith ACPI_BUFFER *
2256c5ba0be4SMike Smith acpi_AllocBuffer(int size)
2257c5ba0be4SMike Smith {
2258c5ba0be4SMike Smith     ACPI_BUFFER	*buf;
2259c5ba0be4SMike Smith 
2260c5ba0be4SMike Smith     if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
2261c5ba0be4SMike Smith 	return (NULL);
2262c5ba0be4SMike Smith     buf->Length = size;
2263c5ba0be4SMike Smith     buf->Pointer = (void *)(buf + 1);
2264c5ba0be4SMike Smith     return (buf);
2265c5ba0be4SMike Smith }
2266c5ba0be4SMike Smith 
2267c310653eSNate Lawson ACPI_STATUS
2268cc58e4eeSNate Lawson acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
2269c310653eSNate Lawson {
2270c310653eSNate Lawson     ACPI_OBJECT arg1;
2271c310653eSNate Lawson     ACPI_OBJECT_LIST args;
2272c310653eSNate Lawson 
2273c310653eSNate Lawson     arg1.Type = ACPI_TYPE_INTEGER;
2274c310653eSNate Lawson     arg1.Integer.Value = number;
2275c310653eSNate Lawson     args.Count = 1;
2276c310653eSNate Lawson     args.Pointer = &arg1;
2277c310653eSNate Lawson 
2278c310653eSNate Lawson     return (AcpiEvaluateObject(handle, path, &args, NULL));
2279c310653eSNate Lawson }
2280c310653eSNate Lawson 
2281c5ba0be4SMike Smith /*
2282c5ba0be4SMike Smith  * Evaluate a path that should return an integer.
2283c5ba0be4SMike Smith  */
2284c5ba0be4SMike Smith ACPI_STATUS
2285cc58e4eeSNate Lawson acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
2286c5ba0be4SMike Smith {
2287be2b1797SNate Lawson     ACPI_STATUS	status;
2288c5ba0be4SMike Smith     ACPI_BUFFER	buf;
2289c573e654SMitsuru IWASAKI     ACPI_OBJECT	param;
2290c5ba0be4SMike Smith 
2291c5ba0be4SMike Smith     if (handle == NULL)
2292c5ba0be4SMike Smith 	handle = ACPI_ROOT_OBJECT;
22930c7da7acSJohn Baldwin 
22940c7da7acSJohn Baldwin     /*
22950c7da7acSJohn Baldwin      * Assume that what we've been pointed at is an Integer object, or
22960c7da7acSJohn Baldwin      * a method that will return an Integer.
22970c7da7acSJohn Baldwin      */
2298c5ba0be4SMike Smith     buf.Pointer = &param;
2299c5ba0be4SMike Smith     buf.Length = sizeof(param);
2300be2b1797SNate Lawson     status = AcpiEvaluateObject(handle, path, NULL, &buf);
2301be2b1797SNate Lawson     if (ACPI_SUCCESS(status)) {
2302be2b1797SNate Lawson 	if (param.Type == ACPI_TYPE_INTEGER)
2303c5ba0be4SMike Smith 	    *number = param.Integer.Value;
2304be2b1797SNate Lawson 	else
2305be2b1797SNate Lawson 	    status = AE_TYPE;
2306c5ba0be4SMike Smith     }
23070c7da7acSJohn Baldwin 
23080c7da7acSJohn Baldwin     /*
23090c7da7acSJohn Baldwin      * In some applications, a method that's expected to return an Integer
23100c7da7acSJohn Baldwin      * may instead return a Buffer (probably to simplify some internal
23110c7da7acSJohn Baldwin      * arithmetic).  We'll try to fetch whatever it is, and if it's a Buffer,
23120c7da7acSJohn Baldwin      * convert it into an Integer as best we can.
23130c7da7acSJohn Baldwin      *
23140c7da7acSJohn Baldwin      * This is a hack.
23150c7da7acSJohn Baldwin      */
2316be2b1797SNate Lawson     if (status == AE_BUFFER_OVERFLOW) {
2317b53f2771SMike Smith 	if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
2318be2b1797SNate Lawson 	    status = AE_NO_MEMORY;
23190c7da7acSJohn Baldwin 	} else {
2320be2b1797SNate Lawson 	    status = AcpiEvaluateObject(handle, path, NULL, &buf);
2321be2b1797SNate Lawson 	    if (ACPI_SUCCESS(status))
2322be2b1797SNate Lawson 		status = acpi_ConvertBufferToInteger(&buf, number);
23230c7da7acSJohn Baldwin 	    AcpiOsFree(buf.Pointer);
23240c7da7acSJohn Baldwin 	}
2325f97739daSNate Lawson     }
2326be2b1797SNate Lawson     return (status);
2327c5ba0be4SMike Smith }
2328c5ba0be4SMike Smith 
2329c573e654SMitsuru IWASAKI ACPI_STATUS
2330cc58e4eeSNate Lawson acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2331c573e654SMitsuru IWASAKI {
2332c573e654SMitsuru IWASAKI     ACPI_OBJECT	*p;
2333dba55fa2SNate Lawson     UINT8	*val;
2334c573e654SMitsuru IWASAKI     int		i;
2335c573e654SMitsuru IWASAKI 
2336c573e654SMitsuru IWASAKI     p = (ACPI_OBJECT *)bufp->Pointer;
2337c573e654SMitsuru IWASAKI     if (p->Type == ACPI_TYPE_INTEGER) {
2338c573e654SMitsuru IWASAKI 	*number = p->Integer.Value;
2339c573e654SMitsuru IWASAKI 	return (AE_OK);
2340c573e654SMitsuru IWASAKI     }
2341c573e654SMitsuru IWASAKI     if (p->Type != ACPI_TYPE_BUFFER)
2342c573e654SMitsuru IWASAKI 	return (AE_TYPE);
2343c573e654SMitsuru IWASAKI     if (p->Buffer.Length > sizeof(int))
2344c573e654SMitsuru IWASAKI 	return (AE_BAD_DATA);
2345be2b1797SNate Lawson 
2346c573e654SMitsuru IWASAKI     *number = 0;
2347dba55fa2SNate Lawson     val = p->Buffer.Pointer;
2348c573e654SMitsuru IWASAKI     for (i = 0; i < p->Buffer.Length; i++)
2349dba55fa2SNate Lawson 	*number += val[i] << (i * 8);
2350c573e654SMitsuru IWASAKI     return (AE_OK);
2351c573e654SMitsuru IWASAKI }
2352c573e654SMitsuru IWASAKI 
2353c5ba0be4SMike Smith /*
2354c5ba0be4SMike Smith  * Iterate over the elements of an a package object, calling the supplied
2355c5ba0be4SMike Smith  * function for each element.
2356c5ba0be4SMike Smith  *
2357c5ba0be4SMike Smith  * XXX possible enhancement might be to abort traversal on error.
2358c5ba0be4SMike Smith  */
2359c5ba0be4SMike Smith ACPI_STATUS
2360be2b1797SNate Lawson acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2361be2b1797SNate Lawson 	void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2362c5ba0be4SMike Smith {
2363c5ba0be4SMike Smith     ACPI_OBJECT	*comp;
2364c5ba0be4SMike Smith     int		i;
2365c5ba0be4SMike Smith 
2366be2b1797SNate Lawson     if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2367c5ba0be4SMike Smith 	return (AE_BAD_PARAMETER);
2368c5ba0be4SMike Smith 
2369be2b1797SNate Lawson     /* Iterate over components */
2370be2b1797SNate Lawson     i = 0;
2371be2b1797SNate Lawson     comp = pkg->Package.Elements;
2372be2b1797SNate Lawson     for (; i < pkg->Package.Count; i++, comp++)
2373c5ba0be4SMike Smith 	func(comp, arg);
2374c5ba0be4SMike Smith 
2375c5ba0be4SMike Smith     return (AE_OK);
2376c5ba0be4SMike Smith }
2377c5ba0be4SMike Smith 
23786f69255bSMike Smith /*
23796f69255bSMike Smith  * Find the (index)th resource object in a set.
23806f69255bSMike Smith  */
23816f69255bSMike Smith ACPI_STATUS
23826d63101aSMike Smith acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
23836f69255bSMike Smith {
23846d63101aSMike Smith     ACPI_RESOURCE	*rp;
23856f69255bSMike Smith     int			i;
23866f69255bSMike Smith 
23876d63101aSMike Smith     rp = (ACPI_RESOURCE *)buf->Pointer;
23886f69255bSMike Smith     i = index;
23896d63101aSMike Smith     while (i-- > 0) {
2390be2b1797SNate Lawson 	/* Range check */
23916d63101aSMike Smith 	if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
23926f69255bSMike Smith 	    return (AE_BAD_PARAMETER);
2393be2b1797SNate Lawson 
2394be2b1797SNate Lawson 	/* Check for terminator */
2395e8d472a7SJung-uk Kim 	if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
23966d63101aSMike Smith 	    return (AE_NOT_FOUND);
2397abcbc5bcSNate Lawson 	rp = ACPI_NEXT_RESOURCE(rp);
23986f69255bSMike Smith     }
23996f69255bSMike Smith     if (resp != NULL)
24006d63101aSMike Smith 	*resp = rp;
2401be2b1797SNate Lawson 
24026d63101aSMike Smith     return (AE_OK);
24036d63101aSMike Smith }
24046d63101aSMike Smith 
24056d63101aSMike Smith /*
24066d63101aSMike Smith  * Append an ACPI_RESOURCE to an ACPI_BUFFER.
24076d63101aSMike Smith  *
24086d63101aSMike Smith  * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
24096d63101aSMike Smith  * provided to contain it.  If the ACPI_BUFFER is empty, allocate a sensible
24106d63101aSMike Smith  * backing block.  If the ACPI_RESOURCE is NULL, return an empty set of
24116d63101aSMike Smith  * resources.
24126d63101aSMike Smith  */
24136d63101aSMike Smith #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE	512
24146d63101aSMike Smith 
24156d63101aSMike Smith ACPI_STATUS
24166d63101aSMike Smith acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
24176d63101aSMike Smith {
24186d63101aSMike Smith     ACPI_RESOURCE	*rp;
24196d63101aSMike Smith     void		*newp;
24206d63101aSMike Smith 
2421be2b1797SNate Lawson     /* Initialise the buffer if necessary. */
24226d63101aSMike Smith     if (buf->Pointer == NULL) {
24236d63101aSMike Smith 	buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
24246d63101aSMike Smith 	if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
24256d63101aSMike Smith 	    return (AE_NO_MEMORY);
24266d63101aSMike Smith 	rp = (ACPI_RESOURCE *)buf->Pointer;
2427e8d472a7SJung-uk Kim 	rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
242860d306f0SJohn Baldwin 	rp->Length = ACPI_RS_SIZE_MIN;
24296d63101aSMike Smith     }
24306d63101aSMike Smith     if (res == NULL)
24316d63101aSMike Smith 	return (AE_OK);
24326d63101aSMike Smith 
24336d63101aSMike Smith     /*
24346d63101aSMike Smith      * Scan the current buffer looking for the terminator.
24356d63101aSMike Smith      * This will either find the terminator or hit the end
24366d63101aSMike Smith      * of the buffer and return an error.
24376d63101aSMike Smith      */
24386d63101aSMike Smith     rp = (ACPI_RESOURCE *)buf->Pointer;
24396d63101aSMike Smith     for (;;) {
2440be2b1797SNate Lawson 	/* Range check, don't go outside the buffer */
24416d63101aSMike Smith 	if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
24426d63101aSMike Smith 	    return (AE_BAD_PARAMETER);
2443e8d472a7SJung-uk Kim 	if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
24446d63101aSMike Smith 	    break;
2445abcbc5bcSNate Lawson 	rp = ACPI_NEXT_RESOURCE(rp);
24466d63101aSMike Smith     }
24476d63101aSMike Smith 
24486d63101aSMike Smith     /*
24496d63101aSMike Smith      * Check the size of the buffer and expand if required.
24506d63101aSMike Smith      *
24516d63101aSMike Smith      * Required size is:
24526d63101aSMike Smith      *	size of existing resources before terminator +
24536d63101aSMike Smith      *	size of new resource and header +
24546d63101aSMike Smith      * 	size of terminator.
24556d63101aSMike Smith      *
24566d63101aSMike Smith      * Note that this loop should really only run once, unless
24576d63101aSMike Smith      * for some reason we are stuffing a *really* huge resource.
24586d63101aSMike Smith      */
24596d63101aSMike Smith     while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
2460e8d472a7SJung-uk Kim 	    res->Length + ACPI_RS_SIZE_NO_DATA +
2461e8d472a7SJung-uk Kim 	    ACPI_RS_SIZE_MIN) >= buf->Length) {
24626d63101aSMike Smith 	if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
24636d63101aSMike Smith 	    return (AE_NO_MEMORY);
24646d63101aSMike Smith 	bcopy(buf->Pointer, newp, buf->Length);
2465a692219dSMike Smith 	rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2466a692219dSMike Smith 			       ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
24676d63101aSMike Smith 	AcpiOsFree(buf->Pointer);
24686d63101aSMike Smith 	buf->Pointer = newp;
24696d63101aSMike Smith 	buf->Length += buf->Length;
24706d63101aSMike Smith     }
24716d63101aSMike Smith 
2472be2b1797SNate Lawson     /* Insert the new resource. */
2473e8d472a7SJung-uk Kim     bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
24746d63101aSMike Smith 
2475be2b1797SNate Lawson     /* And add the terminator. */
2476abcbc5bcSNate Lawson     rp = ACPI_NEXT_RESOURCE(rp);
2477e8d472a7SJung-uk Kim     rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
247860d306f0SJohn Baldwin     rp->Length = ACPI_RS_SIZE_MIN;
24796d63101aSMike Smith 
24806f69255bSMike Smith     return (AE_OK);
24816f69255bSMike Smith }
2482c5ba0be4SMike Smith 
2483*5f3dd91aSJohn Baldwin ACPI_STATUS
2484*5f3dd91aSJohn Baldwin acpi_EvaluateOSC(ACPI_HANDLE handle, uint8_t *uuid, int revision, int count,
2485*5f3dd91aSJohn Baldwin     uint32_t *caps, bool query)
2486*5f3dd91aSJohn Baldwin {
2487*5f3dd91aSJohn Baldwin 	ACPI_OBJECT arg[4];
2488*5f3dd91aSJohn Baldwin 	ACPI_OBJECT_LIST arglist;
2489*5f3dd91aSJohn Baldwin 
2490*5f3dd91aSJohn Baldwin 	arglist.Pointer = arg;
2491*5f3dd91aSJohn Baldwin 	arglist.Count = 4;
2492*5f3dd91aSJohn Baldwin 	arg[0].Type = ACPI_TYPE_BUFFER;
2493*5f3dd91aSJohn Baldwin 	arg[0].Buffer.Length = ACPI_UUID_LENGTH;
2494*5f3dd91aSJohn Baldwin 	arg[0].Buffer.Pointer = uuid;
2495*5f3dd91aSJohn Baldwin 	arg[1].Type = ACPI_TYPE_INTEGER;
2496*5f3dd91aSJohn Baldwin 	arg[1].Integer.Value = revision;
2497*5f3dd91aSJohn Baldwin 	arg[2].Type = ACPI_TYPE_INTEGER;
2498*5f3dd91aSJohn Baldwin 	arg[2].Integer.Value = count;
2499*5f3dd91aSJohn Baldwin 	arg[3].Type = ACPI_TYPE_BUFFER;
2500*5f3dd91aSJohn Baldwin 	arg[3].Buffer.Length = count * sizeof(uint32_t);
2501*5f3dd91aSJohn Baldwin 	arg[3].Buffer.Pointer = (uint8_t *)caps;
2502*5f3dd91aSJohn Baldwin 	caps[0] = query ? 1 : 0;
2503*5f3dd91aSJohn Baldwin 	return (AcpiEvaluateObject(handle, "_OSC", &arglist, NULL));
2504*5f3dd91aSJohn Baldwin }
2505*5f3dd91aSJohn Baldwin 
2506da14ac9fSJohn Baldwin /*
2507da14ac9fSJohn Baldwin  * Set interrupt model.
2508da14ac9fSJohn Baldwin  */
2509da14ac9fSJohn Baldwin ACPI_STATUS
2510da14ac9fSJohn Baldwin acpi_SetIntrModel(int model)
2511da14ac9fSJohn Baldwin {
2512da14ac9fSJohn Baldwin 
2513c310653eSNate Lawson     return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2514da14ac9fSJohn Baldwin }
2515da14ac9fSJohn Baldwin 
251600a30448SNate Lawson /*
2517d95e7f5aSJohn Baldwin  * Walk subtables of a table and call a callback routine for each
2518d95e7f5aSJohn Baldwin  * subtable.  The caller should provide the first subtable and a
2519d95e7f5aSJohn Baldwin  * pointer to the end of the table.  This can be used to walk tables
2520d95e7f5aSJohn Baldwin  * such as MADT and SRAT that use subtable entries.
2521d95e7f5aSJohn Baldwin  */
2522d95e7f5aSJohn Baldwin void
2523d95e7f5aSJohn Baldwin acpi_walk_subtables(void *first, void *end, acpi_subtable_handler *handler,
2524d95e7f5aSJohn Baldwin     void *arg)
2525d95e7f5aSJohn Baldwin {
2526d95e7f5aSJohn Baldwin     ACPI_SUBTABLE_HEADER *entry;
2527d95e7f5aSJohn Baldwin 
2528d95e7f5aSJohn Baldwin     for (entry = first; (void *)entry < end; ) {
2529d95e7f5aSJohn Baldwin 	/* Avoid an infinite loop if we hit a bogus entry. */
2530d95e7f5aSJohn Baldwin 	if (entry->Length < sizeof(ACPI_SUBTABLE_HEADER))
2531d95e7f5aSJohn Baldwin 	    return;
2532d95e7f5aSJohn Baldwin 
2533d95e7f5aSJohn Baldwin 	handler(entry, arg);
2534d95e7f5aSJohn Baldwin 	entry = ACPI_ADD_PTR(ACPI_SUBTABLE_HEADER, entry, entry->Length);
2535d95e7f5aSJohn Baldwin     }
2536d95e7f5aSJohn Baldwin }
2537d95e7f5aSJohn Baldwin 
2538d95e7f5aSJohn Baldwin /*
253900a30448SNate Lawson  * DEPRECATED.  This interface has serious deficiencies and will be
254000a30448SNate Lawson  * removed.
254100a30448SNate Lawson  *
254200a30448SNate Lawson  * Immediately enter the sleep state.  In the old model, acpiconf(8) ran
254300a30448SNate Lawson  * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
254400a30448SNate Lawson  */
254500a30448SNate Lawson ACPI_STATUS
254600a30448SNate Lawson acpi_SetSleepState(struct acpi_softc *sc, int state)
254700a30448SNate Lawson {
254800a30448SNate Lawson     static int once;
254900a30448SNate Lawson 
255000a30448SNate Lawson     if (!once) {
25512d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
255200a30448SNate Lawson "warning: acpi_SetSleepState() deprecated, need to update your software\n");
255300a30448SNate Lawson 	once = 1;
255400a30448SNate Lawson     }
255500a30448SNate Lawson     return (acpi_EnterSleepState(sc, state));
255600a30448SNate Lawson }
255700a30448SNate Lawson 
2558c66d2b38SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
255900a30448SNate Lawson static void
2560ffe3f1f8SMitsuru IWASAKI acpi_sleep_force_task(void *context)
2561ffe3f1f8SMitsuru IWASAKI {
2562ffe3f1f8SMitsuru IWASAKI     struct acpi_softc *sc = (struct acpi_softc *)context;
2563ffe3f1f8SMitsuru IWASAKI 
2564ffe3f1f8SMitsuru IWASAKI     if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2565ffe3f1f8SMitsuru IWASAKI 	device_printf(sc->acpi_dev, "force sleep state S%d failed\n",
2566ffe3f1f8SMitsuru IWASAKI 	    sc->acpi_next_sstate);
2567ffe3f1f8SMitsuru IWASAKI }
2568ffe3f1f8SMitsuru IWASAKI 
2569ffe3f1f8SMitsuru IWASAKI static void
257000a30448SNate Lawson acpi_sleep_force(void *arg)
257100a30448SNate Lawson {
25722d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
257300a30448SNate Lawson 
25742d0c82e8SJung-uk Kim     device_printf(sc->acpi_dev,
25752d0c82e8SJung-uk Kim 	"suspend request timed out, forcing sleep now\n");
2576ffe3f1f8SMitsuru IWASAKI     /*
2577fadf3fb9SJohn Baldwin      * XXX Suspending from callout causes freezes in DEVICE_SUSPEND().
2578ffe3f1f8SMitsuru IWASAKI      * Suspend from acpi_task thread instead.
2579ffe3f1f8SMitsuru IWASAKI      */
2580ffe3f1f8SMitsuru IWASAKI     if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
2581ffe3f1f8SMitsuru IWASAKI 	acpi_sleep_force_task, sc)))
2582ffe3f1f8SMitsuru IWASAKI 	device_printf(sc->acpi_dev, "AcpiOsExecute() for sleeping failed\n");
258300a30448SNate Lawson }
2584c66d2b38SJung-uk Kim #endif
258500a30448SNate Lawson 
258600a30448SNate Lawson /*
258700a30448SNate Lawson  * Request that the system enter the given suspend state.  All /dev/apm
258800a30448SNate Lawson  * devices and devd(8) will be notified.  Userland then has a chance to
258900a30448SNate Lawson  * save state and acknowledge the request.  The system sleeps once all
259000a30448SNate Lawson  * acks are in.
259100a30448SNate Lawson  */
259200a30448SNate Lawson int
259300a30448SNate Lawson acpi_ReqSleepState(struct acpi_softc *sc, int state)
259400a30448SNate Lawson {
259571f99e63SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
259600a30448SNate Lawson     struct apm_clone_data *clone;
2597337744d9SJung-uk Kim     ACPI_STATUS status;
259800a30448SNate Lawson 
2599a0e73a12SJung-uk Kim     if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
260000a30448SNate Lawson 	return (EINVAL);
2601a0e73a12SJung-uk Kim     if (!acpi_sleep_states[state])
2602a0e73a12SJung-uk Kim 	return (EOPNOTSUPP);
260300a30448SNate Lawson 
26042eb0015aSColin Percival     /*
26052eb0015aSColin Percival      * If a reboot/shutdown/suspend request is already in progress or
26062eb0015aSColin Percival      * suspend is blocked due to an upcoming shutdown, just return.
26072eb0015aSColin Percival      */
26082eb0015aSColin Percival     if (rebooting || sc->acpi_next_sstate != 0 || suspend_blocked) {
2609b12bc99fSMitsuru IWASAKI 	return (0);
2610b12bc99fSMitsuru IWASAKI     }
2611b12bc99fSMitsuru IWASAKI 
2612f22377a8SMitsuru IWASAKI     /* Wait until sleep is enabled. */
2613f22377a8SMitsuru IWASAKI     while (sc->acpi_sleep_disabled) {
2614f22377a8SMitsuru IWASAKI 	AcpiOsSleep(1000);
2615f22377a8SMitsuru IWASAKI     }
2616f22377a8SMitsuru IWASAKI 
2617337744d9SJung-uk Kim     ACPI_LOCK(acpi);
261800a30448SNate Lawson 
2619f22377a8SMitsuru IWASAKI     sc->acpi_next_sstate = state;
262000a30448SNate Lawson 
2621337744d9SJung-uk Kim     /* S5 (soft-off) should be entered directly with no waiting. */
2622337744d9SJung-uk Kim     if (state == ACPI_STATE_S5) {
2623337744d9SJung-uk Kim     	ACPI_UNLOCK(acpi);
2624337744d9SJung-uk Kim 	status = acpi_EnterSleepState(sc, state);
2625337744d9SJung-uk Kim 	return (ACPI_SUCCESS(status) ? 0 : ENXIO);
2626337744d9SJung-uk Kim     }
2627337744d9SJung-uk Kim 
262800a30448SNate Lawson     /* Record the pending state and notify all apm devices. */
262900a30448SNate Lawson     STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
263000a30448SNate Lawson 	clone->notify_status = APM_EV_NONE;
263100a30448SNate Lawson 	if ((clone->flags & ACPI_EVF_DEVD) == 0) {
263200a30448SNate Lawson 	    selwakeuppri(&clone->sel_read, PZERO);
2633374d9c4dSJohn Baldwin 	    KNOTE_LOCKED(&clone->sel_read.si_note, 0);
263400a30448SNate Lawson 	}
263500a30448SNate Lawson     }
263600a30448SNate Lawson 
26370c26519eSMitsuru IWASAKI     /* If devd(8) is not running, immediately enter the sleep state. */
2638d42f0ad8SJung-uk Kim     if (!devctl_process_running()) {
26390c26519eSMitsuru IWASAKI 	ACPI_UNLOCK(acpi);
2640337744d9SJung-uk Kim 	status = acpi_EnterSleepState(sc, state);
2641337744d9SJung-uk Kim 	return (ACPI_SUCCESS(status) ? 0 : ENXIO);
26420c26519eSMitsuru IWASAKI     }
26430c26519eSMitsuru IWASAKI 
264400a30448SNate Lawson     /*
264500a30448SNate Lawson      * Set a timeout to fire if userland doesn't ack the suspend request
264600a30448SNate Lawson      * in time.  This way we still eventually go to sleep if we were
264700a30448SNate Lawson      * overheating or running low on battery, even if userland is hung.
264800a30448SNate Lawson      * We cancel this timeout once all userland acks are in or the
264900a30448SNate Lawson      * suspend request is aborted.
265000a30448SNate Lawson      */
265100a30448SNate Lawson     callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
265200a30448SNate Lawson     ACPI_UNLOCK(acpi);
2653d42f0ad8SJung-uk Kim 
2654d42f0ad8SJung-uk Kim     /* Now notify devd(8) also. */
2655d42f0ad8SJung-uk Kim     acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2656d42f0ad8SJung-uk Kim 
265700a30448SNate Lawson     return (0);
2658c66d2b38SJung-uk Kim #else
2659c66d2b38SJung-uk Kim     /* This platform does not support acpi suspend/resume. */
2660c66d2b38SJung-uk Kim     return (EOPNOTSUPP);
2661c66d2b38SJung-uk Kim #endif
266200a30448SNate Lawson }
266300a30448SNate Lawson 
266400a30448SNate Lawson /*
266500a30448SNate Lawson  * Acknowledge (or reject) a pending sleep state.  The caller has
266600a30448SNate Lawson  * prepared for suspend and is now ready for it to proceed.  If the
266700a30448SNate Lawson  * error argument is non-zero, it indicates suspend should be cancelled
266800a30448SNate Lawson  * and gives an errno value describing why.  Once all votes are in,
266900a30448SNate Lawson  * we suspend the system.
267000a30448SNate Lawson  */
267100a30448SNate Lawson int
267200a30448SNate Lawson acpi_AckSleepState(struct apm_clone_data *clone, int error)
267300a30448SNate Lawson {
2674c66d2b38SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
267500a30448SNate Lawson     struct acpi_softc *sc;
267600a30448SNate Lawson     int ret, sleeping;
267700a30448SNate Lawson 
267800a30448SNate Lawson     /* If no pending sleep state, return an error. */
267900a30448SNate Lawson     ACPI_LOCK(acpi);
268000a30448SNate Lawson     sc = clone->acpi_sc;
268100a30448SNate Lawson     if (sc->acpi_next_sstate == 0) {
268200a30448SNate Lawson     	ACPI_UNLOCK(acpi);
268300a30448SNate Lawson 	return (ENXIO);
268400a30448SNate Lawson     }
268500a30448SNate Lawson 
268600a30448SNate Lawson     /* Caller wants to abort suspend process. */
268700a30448SNate Lawson     if (error) {
268800a30448SNate Lawson 	sc->acpi_next_sstate = 0;
268900a30448SNate Lawson 	callout_stop(&sc->susp_force_to);
26902d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
26912d0c82e8SJung-uk Kim 	    "listener on %s cancelled the pending suspend\n",
269200a30448SNate Lawson 	    devtoname(clone->cdev));
269300a30448SNate Lawson     	ACPI_UNLOCK(acpi);
269400a30448SNate Lawson 	return (0);
269500a30448SNate Lawson     }
269600a30448SNate Lawson 
269700a30448SNate Lawson     /*
269800a30448SNate Lawson      * Mark this device as acking the suspend request.  Then, walk through
269900a30448SNate Lawson      * all devices, seeing if they agree yet.  We only count devices that
270000a30448SNate Lawson      * are writable since read-only devices couldn't ack the request.
270100a30448SNate Lawson      */
270200a30448SNate Lawson     sleeping = TRUE;
2703c66d2b38SJung-uk Kim     clone->notify_status = APM_EV_ACKED;
270400a30448SNate Lawson     STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
270500a30448SNate Lawson 	if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
270600a30448SNate Lawson 	    clone->notify_status != APM_EV_ACKED) {
270700a30448SNate Lawson 	    sleeping = FALSE;
270800a30448SNate Lawson 	    break;
270900a30448SNate Lawson 	}
271000a30448SNate Lawson     }
271100a30448SNate Lawson 
271200a30448SNate Lawson     /* If all devices have voted "yes", we will suspend now. */
271300a30448SNate Lawson     if (sleeping)
271400a30448SNate Lawson 	callout_stop(&sc->susp_force_to);
271500a30448SNate Lawson     ACPI_UNLOCK(acpi);
271600a30448SNate Lawson     ret = 0;
271700a30448SNate Lawson     if (sleeping) {
271800a30448SNate Lawson 	if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
271900a30448SNate Lawson 		ret = ENODEV;
272000a30448SNate Lawson     }
272100a30448SNate Lawson     return (ret);
2722c66d2b38SJung-uk Kim #else
2723c66d2b38SJung-uk Kim     /* This platform does not support acpi suspend/resume. */
2724c66d2b38SJung-uk Kim     return (EOPNOTSUPP);
2725c66d2b38SJung-uk Kim #endif
272600a30448SNate Lawson }
272700a30448SNate Lawson 
2728ece50487SMitsuru IWASAKI static void
2729ece50487SMitsuru IWASAKI acpi_sleep_enable(void *arg)
2730ece50487SMitsuru IWASAKI {
2731d42f0ad8SJung-uk Kim     struct acpi_softc	*sc = (struct acpi_softc *)arg;
2732bee4aa4aSNate Lawson 
2733fadf3fb9SJohn Baldwin     ACPI_LOCK_ASSERT(acpi);
2734fadf3fb9SJohn Baldwin 
2735a0e73a12SJung-uk Kim     /* Reschedule if the system is not fully up and running. */
2736a0e73a12SJung-uk Kim     if (!AcpiGbl_SystemAwakeAndRunning) {
2737fadf3fb9SJohn Baldwin 	callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME);
2738a0e73a12SJung-uk Kim 	return;
2739a0e73a12SJung-uk Kim     }
2740a0e73a12SJung-uk Kim 
2741a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = FALSE;
2742d42f0ad8SJung-uk Kim }
2743d42f0ad8SJung-uk Kim 
2744d42f0ad8SJung-uk Kim static ACPI_STATUS
2745d42f0ad8SJung-uk Kim acpi_sleep_disable(struct acpi_softc *sc)
2746d42f0ad8SJung-uk Kim {
2747d42f0ad8SJung-uk Kim     ACPI_STATUS		status;
2748d42f0ad8SJung-uk Kim 
2749a0e73a12SJung-uk Kim     /* Fail if the system is not fully up and running. */
2750a0e73a12SJung-uk Kim     if (!AcpiGbl_SystemAwakeAndRunning)
2751a0e73a12SJung-uk Kim 	return (AE_ERROR);
2752a0e73a12SJung-uk Kim 
2753d42f0ad8SJung-uk Kim     ACPI_LOCK(acpi);
2754d42f0ad8SJung-uk Kim     status = sc->acpi_sleep_disabled ? AE_ERROR : AE_OK;
2755a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = TRUE;
2756d42f0ad8SJung-uk Kim     ACPI_UNLOCK(acpi);
2757d42f0ad8SJung-uk Kim 
2758d42f0ad8SJung-uk Kim     return (status);
2759ece50487SMitsuru IWASAKI }
2760c30382dfSMitsuru IWASAKI 
276115e2f34fSNate Lawson enum acpi_sleep_state {
276215e2f34fSNate Lawson     ACPI_SS_NONE,
276315e2f34fSNate Lawson     ACPI_SS_GPE_SET,
276415e2f34fSNate Lawson     ACPI_SS_DEV_SUSPEND,
276515e2f34fSNate Lawson     ACPI_SS_SLP_PREP,
276615e2f34fSNate Lawson     ACPI_SS_SLEPT,
276715e2f34fSNate Lawson };
276815e2f34fSNate Lawson 
276915e32d5dSMike Smith /*
277000a30448SNate Lawson  * Enter the desired system sleep state.
277115e32d5dSMike Smith  *
2772be2b1797SNate Lawson  * Currently we support S1-S5 but S4 is only S4BIOS
277315e32d5dSMike Smith  */
277400a30448SNate Lawson static ACPI_STATUS
277500a30448SNate Lawson acpi_EnterSleepState(struct acpi_softc *sc, int state)
277615e32d5dSMike Smith {
277771804adcSJung-uk Kim     register_t intr;
277815e2f34fSNate Lawson     ACPI_STATUS status;
2779b913a7d5SAndriy Gapon     ACPI_EVENT_STATUS power_button_status;
278015e2f34fSNate Lawson     enum acpi_sleep_state slp_state;
2781f0a101b7SMitsuru IWASAKI     int sleep_result;
278215e32d5dSMike Smith 
2783b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
27840ae55423SMike Smith 
2785a0e73a12SJung-uk Kim     if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
278633c70d41SAndriy Gapon 	return_ACPI_STATUS (AE_BAD_PARAMETER);
2787a0e73a12SJung-uk Kim     if (!acpi_sleep_states[state]) {
2788a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev, "Sleep state S%d not supported by BIOS\n",
2789a0e73a12SJung-uk Kim 	    state);
2790a0e73a12SJung-uk Kim 	return (AE_SUPPORT);
2791a0e73a12SJung-uk Kim     }
2792a0e73a12SJung-uk Kim 
2793a0e73a12SJung-uk Kim     /* Re-entry once we're suspending is not allowed. */
2794a0e73a12SJung-uk Kim     status = acpi_sleep_disable(sc);
2795a0e73a12SJung-uk Kim     if (ACPI_FAILURE(status)) {
2796a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev,
2797a0e73a12SJung-uk Kim 	    "suspend request ignored (not ready yet)\n");
2798a0e73a12SJung-uk Kim 	return (status);
2799a0e73a12SJung-uk Kim     }
280033c70d41SAndriy Gapon 
280133c70d41SAndriy Gapon     if (state == ACPI_STATE_S5) {
280233c70d41SAndriy Gapon 	/*
280333c70d41SAndriy Gapon 	 * Shut down cleanly and power off.  This will call us back through the
280433c70d41SAndriy Gapon 	 * shutdown handlers.
280533c70d41SAndriy Gapon 	 */
280633c70d41SAndriy Gapon 	shutdown_nice(RB_POWEROFF);
280733c70d41SAndriy Gapon 	return_ACPI_STATUS (AE_OK);
280833c70d41SAndriy Gapon     }
280933c70d41SAndriy Gapon 
281085f95fffSAndriy Gapon     EVENTHANDLER_INVOKE(power_suspend_early);
281185f95fffSAndriy Gapon     stop_all_proc();
28124a8fa6feSJung-uk Kim     EVENTHANDLER_INVOKE(power_suspend);
28134a8fa6feSJung-uk Kim 
281436a483bbSJung-uk Kim     if (smp_started) {
2815c66d2b38SJung-uk Kim 	thread_lock(curthread);
2816c66d2b38SJung-uk Kim 	sched_bind(curthread, 0);
2817c66d2b38SJung-uk Kim 	thread_unlock(curthread);
281836a483bbSJung-uk Kim     }
2819c66d2b38SJung-uk Kim 
2820a56fe095SJohn Baldwin     /*
2821a56fe095SJohn Baldwin      * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2822a56fe095SJohn Baldwin      * drivers need this.
2823a56fe095SJohn Baldwin      */
2824a56fe095SJohn Baldwin     mtx_lock(&Giant);
2825c66d2b38SJung-uk Kim 
282615e2f34fSNate Lawson     slp_state = ACPI_SS_NONE;
282756d8cb57SMitsuru IWASAKI 
2828a1fccb47SMitsuru IWASAKI     sc->acpi_sstate = state;
2829a1fccb47SMitsuru IWASAKI 
2830d4b9ff91SNate Lawson     /* Enable any GPEs as appropriate and requested by the user. */
2831d4b9ff91SNate Lawson     acpi_wake_prep_walk(state);
283215e2f34fSNate Lawson     slp_state = ACPI_SS_GPE_SET;
2833e8b4d56eSNate Lawson 
283415e32d5dSMike Smith     /*
2835c7f88fc3SNate Lawson      * Inform all devices that we are going to sleep.  If at least one
2836c7f88fc3SNate Lawson      * device fails, DEVICE_SUSPEND() automatically resumes the tree.
283715e32d5dSMike Smith      *
2838c7f88fc3SNate Lawson      * XXX Note that a better two-pass approach with a 'veto' pass
2839c7f88fc3SNate Lawson      * followed by a "real thing" pass would be better, but the current
2840c7f88fc3SNate Lawson      * bus interface does not provide for this.
284115e32d5dSMike Smith      */
284215e2f34fSNate Lawson     if (DEVICE_SUSPEND(root_bus) != 0) {
284315e2f34fSNate Lawson 	device_printf(sc->acpi_dev, "device_suspend failed\n");
284433c70d41SAndriy Gapon 	goto backout;
284515e2f34fSNate Lawson     }
284615e2f34fSNate Lawson     slp_state = ACPI_SS_DEV_SUSPEND;
2847b9c780d6SMitsuru IWASAKI 
284893bfd059SNate Lawson     /* If testing device suspend only, back out of everything here. */
284993bfd059SNate Lawson     if (acpi_susp_bounce)
285033c70d41SAndriy Gapon 	goto backout;
285193bfd059SNate Lawson 
2852be2b1797SNate Lawson     status = AcpiEnterSleepStatePrep(state);
2853be2b1797SNate Lawson     if (ACPI_FAILURE(status)) {
2854b9c780d6SMitsuru IWASAKI 	device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2855b9c780d6SMitsuru IWASAKI 		      AcpiFormatException(status));
285633c70d41SAndriy Gapon 	goto backout;
2857b9c780d6SMitsuru IWASAKI     }
285815e2f34fSNate Lawson     slp_state = ACPI_SS_SLP_PREP;
2859b9c780d6SMitsuru IWASAKI 
2860be2b1797SNate Lawson     if (sc->acpi_sleep_delay > 0)
2861ff01efb5SMitsuru IWASAKI 	DELAY(sc->acpi_sleep_delay * 1000000);
2862ff01efb5SMitsuru IWASAKI 
2863f0a101b7SMitsuru IWASAKI     intr = intr_disable();
28644d46ef51SJung-uk Kim     if (state != ACPI_STATE_S1) {
2865f0a101b7SMitsuru IWASAKI 	sleep_result = acpi_sleep_machdep(sc, state);
2866f0a101b7SMitsuru IWASAKI 	acpi_wakeup_machdep(sc, state, sleep_result, 0);
2867b1a5c017SAndriy Gapon 
2868b1a5c017SAndriy Gapon 	/*
2869b1a5c017SAndriy Gapon 	 * XXX According to ACPI specification SCI_EN bit should be restored
2870b1a5c017SAndriy Gapon 	 * by ACPI platform (BIOS, firmware) to its pre-sleep state.
2871b1a5c017SAndriy Gapon 	 * Unfortunately some BIOSes fail to do that and that leads to
2872b1a5c017SAndriy Gapon 	 * unexpected and serious consequences during wake up like a system
2873b1a5c017SAndriy Gapon 	 * getting stuck in SMI handlers.
2874b1a5c017SAndriy Gapon 	 * This hack is picked up from Linux, which claims that it follows
2875b1a5c017SAndriy Gapon 	 * Windows behavior.
2876b1a5c017SAndriy Gapon 	 */
2877b1a5c017SAndriy Gapon 	if (sleep_result == 1 && state != ACPI_STATE_S4)
2878b1a5c017SAndriy Gapon 	    AcpiWriteBitRegister(ACPI_BITREG_SCI_ENABLE, ACPI_ENABLE_EVENT);
2879b1a5c017SAndriy Gapon 
28801df130f1SJung-uk Kim 	AcpiLeaveSleepStatePrep(state);
2881b913a7d5SAndriy Gapon 
2882b913a7d5SAndriy Gapon 	if (sleep_result == 1 && state == ACPI_STATE_S3) {
2883b913a7d5SAndriy Gapon 	    /*
2884b913a7d5SAndriy Gapon 	     * Prevent mis-interpretation of the wakeup by power button
2885b913a7d5SAndriy Gapon 	     * as a request for power off.
2886b913a7d5SAndriy Gapon 	     * Ideally we should post an appropriate wakeup event,
2887b913a7d5SAndriy Gapon 	     * perhaps using acpi_event_power_button_wake or alike.
2888b913a7d5SAndriy Gapon 	     *
2889b913a7d5SAndriy Gapon 	     * Clearing of power button status after wakeup is mandated
2890b913a7d5SAndriy Gapon 	     * by ACPI specification in section "Fixed Power Button".
2891b913a7d5SAndriy Gapon 	     *
2892b913a7d5SAndriy Gapon 	     * XXX As of ACPICA 20121114 AcpiGetEventStatus provides
2893b913a7d5SAndriy Gapon 	     * status as 0/1 corressponding to inactive/active despite
2894b913a7d5SAndriy Gapon 	     * its type being ACPI_EVENT_STATUS.  In other words,
2895b913a7d5SAndriy Gapon 	     * we should not test for ACPI_EVENT_FLAG_SET for time being.
2896b913a7d5SAndriy Gapon 	     */
2897b913a7d5SAndriy Gapon 	    if (ACPI_SUCCESS(AcpiGetEventStatus(ACPI_EVENT_POWER_BUTTON,
2898b913a7d5SAndriy Gapon 		&power_button_status)) && power_button_status != 0) {
2899b913a7d5SAndriy Gapon 		AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
2900b913a7d5SAndriy Gapon 		device_printf(sc->acpi_dev,
2901b913a7d5SAndriy Gapon 		    "cleared fixed power button status\n");
2902b913a7d5SAndriy Gapon 	    }
2903b913a7d5SAndriy Gapon 	}
2904b913a7d5SAndriy Gapon 
2905f0a101b7SMitsuru IWASAKI 	intr_restore(intr);
2906f0a101b7SMitsuru IWASAKI 
2907f0a101b7SMitsuru IWASAKI 	/* call acpi_wakeup_machdep() again with interrupt enabled */
2908f0a101b7SMitsuru IWASAKI 	acpi_wakeup_machdep(sc, state, sleep_result, 1);
2909f0a101b7SMitsuru IWASAKI 
2910f0a101b7SMitsuru IWASAKI 	if (sleep_result == -1)
2911a159c266SJung-uk Kim 		goto backout;
29126161544cSTakanori Watanabe 
29136161544cSTakanori Watanabe 	/* Re-enable ACPI hardware on wakeup from sleep state 4. */
2914be2b1797SNate Lawson 	if (state == ACPI_STATE_S4)
2915964679ceSMitsuru IWASAKI 	    AcpiEnable();
29166161544cSTakanori Watanabe     } else {
29171df130f1SJung-uk Kim 	status = AcpiEnterSleepState(state);
29181df130f1SJung-uk Kim 	AcpiLeaveSleepStatePrep(state);
291971804adcSJung-uk Kim 	intr_restore(intr);
2920be2b1797SNate Lawson 	if (ACPI_FAILURE(status)) {
2921be2b1797SNate Lawson 	    device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2922be2b1797SNate Lawson 			  AcpiFormatException(status));
292333c70d41SAndriy Gapon 	    goto backout;
292415e32d5dSMike Smith 	}
29256161544cSTakanori Watanabe     }
292615e2f34fSNate Lawson     slp_state = ACPI_SS_SLEPT;
2927ece50487SMitsuru IWASAKI 
292815e2f34fSNate Lawson     /*
292915e2f34fSNate Lawson      * Back out state according to how far along we got in the suspend
293015e2f34fSNate Lawson      * process.  This handles both the error and success cases.
293115e2f34fSNate Lawson      */
293233c70d41SAndriy Gapon backout:
293315e2f34fSNate Lawson     if (slp_state >= ACPI_SS_GPE_SET) {
293415e2f34fSNate Lawson 	acpi_wake_prep_walk(state);
293515e2f34fSNate Lawson 	sc->acpi_sstate = ACPI_STATE_S0;
293615e2f34fSNate Lawson     }
2937e3b56b66SMitsuru IWASAKI     if (slp_state >= ACPI_SS_DEV_SUSPEND)
2938e3b56b66SMitsuru IWASAKI 	DEVICE_RESUME(root_bus);
2939f0a101b7SMitsuru IWASAKI     if (slp_state >= ACPI_SS_SLP_PREP)
294015e2f34fSNate Lawson 	AcpiLeaveSleepState(state);
2941a0a15716SJung-uk Kim     if (slp_state >= ACPI_SS_SLEPT) {
2942a0a15716SJung-uk Kim 	acpi_resync_clock(sc);
294315e2f34fSNate Lawson 	acpi_enable_fixed_events(sc);
2944a0a15716SJung-uk Kim     }
2945337744d9SJung-uk Kim     sc->acpi_next_sstate = 0;
294615e2f34fSNate Lawson 
2947a56fe095SJohn Baldwin     mtx_unlock(&Giant);
2948c66d2b38SJung-uk Kim 
294936a483bbSJung-uk Kim     if (smp_started) {
2950c66d2b38SJung-uk Kim 	thread_lock(curthread);
2951c66d2b38SJung-uk Kim 	sched_unbind(curthread);
2952c66d2b38SJung-uk Kim 	thread_unlock(curthread);
295336a483bbSJung-uk Kim     }
2954c66d2b38SJung-uk Kim 
295585f95fffSAndriy Gapon     resume_all_proc();
295685f95fffSAndriy Gapon 
29574a8fa6feSJung-uk Kim     EVENTHANDLER_INVOKE(power_resume);
29584a8fa6feSJung-uk Kim 
2959d42f0ad8SJung-uk Kim     /* Allow another sleep request after a while. */
2960fadf3fb9SJohn Baldwin     callout_schedule(&acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME);
2961d42f0ad8SJung-uk Kim 
2962d42f0ad8SJung-uk Kim     /* Run /etc/rc.resume after we are back. */
2963d42f0ad8SJung-uk Kim     if (devctl_process_running())
2964d42f0ad8SJung-uk Kim 	acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2965d42f0ad8SJung-uk Kim 
29660ae55423SMike Smith     return_ACPI_STATUS (status);
296715e32d5dSMike Smith }
296815e32d5dSMike Smith 
2969a0a15716SJung-uk Kim static void
29700755473bSJung-uk Kim acpi_resync_clock(struct acpi_softc *sc)
29710755473bSJung-uk Kim {
2972ebbed20dSAndriy Gapon #ifdef __amd64__
29730755473bSJung-uk Kim     if (!acpi_reset_clock)
29740755473bSJung-uk Kim 	return;
29750755473bSJung-uk Kim 
29760755473bSJung-uk Kim     /*
29770755473bSJung-uk Kim      * Warm up timecounter again and reset system clock.
29780755473bSJung-uk Kim      */
29790755473bSJung-uk Kim     (void)timecounter->tc_get_timecount(timecounter);
29800755473bSJung-uk Kim     (void)timecounter->tc_get_timecount(timecounter);
29810755473bSJung-uk Kim     inittodr(time_second + sc->acpi_sleep_delay);
2982a0a15716SJung-uk Kim #endif
29830755473bSJung-uk Kim }
29840755473bSJung-uk Kim 
2985e8b4d56eSNate Lawson /* Enable or disable the device's wake GPE. */
2986e8b4d56eSNate Lawson int
2987e8b4d56eSNate Lawson acpi_wake_set_enable(device_t dev, int enable)
2988e8b4d56eSNate Lawson {
2989e8b4d56eSNate Lawson     struct acpi_prw_data prw;
2990e8b4d56eSNate Lawson     ACPI_STATUS status;
2991e8b4d56eSNate Lawson     int flags;
2992e8b4d56eSNate Lawson 
2993d4b9ff91SNate Lawson     /* Make sure the device supports waking the system and get the GPE. */
29942be4e471SJung-uk Kim     if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2995e8b4d56eSNate Lawson 	return (ENXIO);
2996e8b4d56eSNate Lawson 
2997d4b9ff91SNate Lawson     flags = acpi_get_flags(dev);
2998e8b4d56eSNate Lawson     if (enable) {
29995a77b11bSJung-uk Kim 	status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
30005a77b11bSJung-uk Kim 	    ACPI_GPE_ENABLE);
3001e8b4d56eSNate Lawson 	if (ACPI_FAILURE(status)) {
3002e8b4d56eSNate Lawson 	    device_printf(dev, "enable wake failed\n");
3003e8b4d56eSNate Lawson 	    return (ENXIO);
3004e8b4d56eSNate Lawson 	}
3005d4b9ff91SNate Lawson 	acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
3006e8b4d56eSNate Lawson     } else {
30075a77b11bSJung-uk Kim 	status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
30085a77b11bSJung-uk Kim 	    ACPI_GPE_DISABLE);
3009e8b4d56eSNate Lawson 	if (ACPI_FAILURE(status)) {
3010e8b4d56eSNate Lawson 	    device_printf(dev, "disable wake failed\n");
3011e8b4d56eSNate Lawson 	    return (ENXIO);
3012e8b4d56eSNate Lawson 	}
3013d4b9ff91SNate Lawson 	acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
3014e8b4d56eSNate Lawson     }
3015e8b4d56eSNate Lawson 
3016e8b4d56eSNate Lawson     return (0);
3017e8b4d56eSNate Lawson }
3018e8b4d56eSNate Lawson 
3019d4b9ff91SNate Lawson static int
3020d4b9ff91SNate Lawson acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
3021e8b4d56eSNate Lawson {
3022e8b4d56eSNate Lawson     struct acpi_prw_data prw;
3023d4b9ff91SNate Lawson     device_t dev;
3024e8b4d56eSNate Lawson 
3025d4b9ff91SNate Lawson     /* Check that this is a wake-capable device and get its GPE. */
3026e8b4d56eSNate Lawson     if (acpi_parse_prw(handle, &prw) != 0)
3027e8b4d56eSNate Lawson 	return (ENXIO);
3028d4b9ff91SNate Lawson     dev = acpi_get_device(handle);
3029e8b4d56eSNate Lawson 
3030e8b4d56eSNate Lawson     /*
3031d4b9ff91SNate Lawson      * The destination sleep state must be less than (i.e., higher power)
3032d4b9ff91SNate Lawson      * or equal to the value specified by _PRW.  If this GPE cannot be
3033d4b9ff91SNate Lawson      * enabled for the next sleep state, then disable it.  If it can and
3034d4b9ff91SNate Lawson      * the user requested it be enabled, turn on any required power resources
3035d4b9ff91SNate Lawson      * and set _PSW.
3036e8b4d56eSNate Lawson      */
3037d4b9ff91SNate Lawson     if (sstate > prw.lowest_wake) {
30385a77b11bSJung-uk Kim 	AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
3039e8b4d56eSNate Lawson 	if (bootverbose)
3040d4b9ff91SNate Lawson 	    device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
3041d4b9ff91SNate Lawson 		acpi_name(handle), sstate);
3042d4b9ff91SNate Lawson     } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
3043d4b9ff91SNate Lawson 	acpi_pwr_wake_enable(handle, 1);
3044d4b9ff91SNate Lawson 	acpi_SetInteger(handle, "_PSW", 1);
3045d4b9ff91SNate Lawson 	if (bootverbose)
3046d4b9ff91SNate Lawson 	    device_printf(dev, "wake_prep enabled for %s (S%d)\n",
3047d4b9ff91SNate Lawson 		acpi_name(handle), sstate);
3048d4b9ff91SNate Lawson     }
3049cc85c78cSNate Lawson 
3050cc85c78cSNate Lawson     return (0);
3051e8b4d56eSNate Lawson }
3052e8b4d56eSNate Lawson 
3053d4b9ff91SNate Lawson static int
3054d4b9ff91SNate Lawson acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
3055cc85c78cSNate Lawson {
3056cc85c78cSNate Lawson     struct acpi_prw_data prw;
3057d4b9ff91SNate Lawson     device_t dev;
3058cc85c78cSNate Lawson 
3059cc85c78cSNate Lawson     /*
3060d4b9ff91SNate Lawson      * Check that this is a wake-capable device and get its GPE.  Return
3061d4b9ff91SNate Lawson      * now if the user didn't enable this device for wake.
3062cc85c78cSNate Lawson      */
3063d4b9ff91SNate Lawson     if (acpi_parse_prw(handle, &prw) != 0)
3064d4b9ff91SNate Lawson 	return (ENXIO);
3065d4b9ff91SNate Lawson     dev = acpi_get_device(handle);
3066d4b9ff91SNate Lawson     if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
3067d4b9ff91SNate Lawson 	return (0);
3068cc85c78cSNate Lawson 
3069d4b9ff91SNate Lawson     /*
3070d4b9ff91SNate Lawson      * If this GPE couldn't be enabled for the previous sleep state, it was
3071d4b9ff91SNate Lawson      * disabled before going to sleep so re-enable it.  If it was enabled,
3072d4b9ff91SNate Lawson      * clear _PSW and turn off any power resources it used.
3073d4b9ff91SNate Lawson      */
3074d4b9ff91SNate Lawson     if (sstate > prw.lowest_wake) {
30755a77b11bSJung-uk Kim 	AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
3076d4b9ff91SNate Lawson 	if (bootverbose)
3077d4b9ff91SNate Lawson 	    device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
3078d4b9ff91SNate Lawson     } else {
3079d4b9ff91SNate Lawson 	acpi_SetInteger(handle, "_PSW", 0);
3080d4b9ff91SNate Lawson 	acpi_pwr_wake_enable(handle, 0);
3081d4b9ff91SNate Lawson 	if (bootverbose)
3082d4b9ff91SNate Lawson 	    device_printf(dev, "run_prep cleaned up for %s\n",
3083d4b9ff91SNate Lawson 		acpi_name(handle));
3084d4b9ff91SNate Lawson     }
3085d4b9ff91SNate Lawson 
3086e8b4d56eSNate Lawson     return (0);
3087e8b4d56eSNate Lawson }
3088e8b4d56eSNate Lawson 
3089e8b4d56eSNate Lawson static ACPI_STATUS
3090d4b9ff91SNate Lawson acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
3091e8b4d56eSNate Lawson {
3092d4b9ff91SNate Lawson     int sstate;
3093e8b4d56eSNate Lawson 
3094d4b9ff91SNate Lawson     /* If suspending, run the sleep prep function, otherwise wake. */
3095d4b9ff91SNate Lawson     sstate = *(int *)context;
3096d4b9ff91SNate Lawson     if (AcpiGbl_SystemAwakeAndRunning)
3097d4b9ff91SNate Lawson 	acpi_wake_sleep_prep(handle, sstate);
3098d4b9ff91SNate Lawson     else
3099d4b9ff91SNate Lawson 	acpi_wake_run_prep(handle, sstate);
3100e8b4d56eSNate Lawson     return (AE_OK);
3101e8b4d56eSNate Lawson }
3102e8b4d56eSNate Lawson 
3103d4b9ff91SNate Lawson /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
3104e8b4d56eSNate Lawson static int
3105d4b9ff91SNate Lawson acpi_wake_prep_walk(int sstate)
3106e8b4d56eSNate Lawson {
3107e8b4d56eSNate Lawson     ACPI_HANDLE sb_handle;
3108e8b4d56eSNate Lawson 
3109e8b4d56eSNate Lawson     if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
3110d4b9ff91SNate Lawson 	AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
31112272d050SJung-uk Kim 	    acpi_wake_prep, NULL, &sstate, NULL);
3112e8b4d56eSNate Lawson     return (0);
3113e8b4d56eSNate Lawson }
3114e8b4d56eSNate Lawson 
311588a79fc0SNate Lawson /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
311688a79fc0SNate Lawson static int
311788a79fc0SNate Lawson acpi_wake_sysctl_walk(device_t dev)
311888a79fc0SNate Lawson {
311988a79fc0SNate Lawson     int error, i, numdevs;
312088a79fc0SNate Lawson     device_t *devlist;
312188a79fc0SNate Lawson     device_t child;
3122d4b9ff91SNate Lawson     ACPI_STATUS status;
312388a79fc0SNate Lawson 
312488a79fc0SNate Lawson     error = device_get_children(dev, &devlist, &numdevs);
31251c9ec538SNate Lawson     if (error != 0 || numdevs == 0) {
31261c9ec538SNate Lawson 	if (numdevs == 0)
31271c9ec538SNate Lawson 	    free(devlist, M_TEMP);
312888a79fc0SNate Lawson 	return (error);
31291c9ec538SNate Lawson     }
313088a79fc0SNate Lawson     for (i = 0; i < numdevs; i++) {
313188a79fc0SNate Lawson 	child = devlist[i];
3132d4b9ff91SNate Lawson 	acpi_wake_sysctl_walk(child);
313388a79fc0SNate Lawson 	if (!device_is_attached(child))
313488a79fc0SNate Lawson 	    continue;
3135d4b9ff91SNate Lawson 	status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
3136d4b9ff91SNate Lawson 	if (ACPI_SUCCESS(status)) {
313788a79fc0SNate Lawson 	    SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
313888a79fc0SNate Lawson 		SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
313988a79fc0SNate Lawson 		"wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
314088a79fc0SNate Lawson 		acpi_wake_set_sysctl, "I", "Device set to wake the system");
314188a79fc0SNate Lawson 	}
314288a79fc0SNate Lawson     }
314388a79fc0SNate Lawson     free(devlist, M_TEMP);
314488a79fc0SNate Lawson 
314588a79fc0SNate Lawson     return (0);
314688a79fc0SNate Lawson }
314788a79fc0SNate Lawson 
314888a79fc0SNate Lawson /* Enable or disable wake from userland. */
314988a79fc0SNate Lawson static int
315088a79fc0SNate Lawson acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
315188a79fc0SNate Lawson {
315288a79fc0SNate Lawson     int enable, error;
315388a79fc0SNate Lawson     device_t dev;
315488a79fc0SNate Lawson 
315588a79fc0SNate Lawson     dev = (device_t)arg1;
3156d4b9ff91SNate Lawson     enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
315788a79fc0SNate Lawson 
315888a79fc0SNate Lawson     error = sysctl_handle_int(oidp, &enable, 0, req);
315988a79fc0SNate Lawson     if (error != 0 || req->newptr == NULL)
316088a79fc0SNate Lawson 	return (error);
316188a79fc0SNate Lawson     if (enable != 0 && enable != 1)
316288a79fc0SNate Lawson 	return (EINVAL);
316388a79fc0SNate Lawson 
316488a79fc0SNate Lawson     return (acpi_wake_set_enable(dev, enable));
316588a79fc0SNate Lawson }
316688a79fc0SNate Lawson 
3167e8b4d56eSNate Lawson /* Parse a device's _PRW into a structure. */
3168d4b9ff91SNate Lawson int
3169e8b4d56eSNate Lawson acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
3170e8b4d56eSNate Lawson {
3171e8b4d56eSNate Lawson     ACPI_STATUS			status;
3172e8b4d56eSNate Lawson     ACPI_BUFFER			prw_buffer;
3173e8b4d56eSNate Lawson     ACPI_OBJECT			*res, *res2;
3174d4b9ff91SNate Lawson     int				error, i, power_count;
3175e8b4d56eSNate Lawson 
3176e8b4d56eSNate Lawson     if (h == NULL || prw == NULL)
3177e8b4d56eSNate Lawson 	return (EINVAL);
3178e8b4d56eSNate Lawson 
3179e8b4d56eSNate Lawson     /*
3180e8b4d56eSNate Lawson      * The _PRW object (7.2.9) is only required for devices that have the
3181e8b4d56eSNate Lawson      * ability to wake the system from a sleeping state.
3182e8b4d56eSNate Lawson      */
3183e8b4d56eSNate Lawson     error = EINVAL;
3184e8b4d56eSNate Lawson     prw_buffer.Pointer = NULL;
3185e8b4d56eSNate Lawson     prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
3186e8b4d56eSNate Lawson     status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
3187e8b4d56eSNate Lawson     if (ACPI_FAILURE(status))
3188e8b4d56eSNate Lawson 	return (ENOENT);
3189e8b4d56eSNate Lawson     res = (ACPI_OBJECT *)prw_buffer.Pointer;
3190e8b4d56eSNate Lawson     if (res == NULL)
3191e8b4d56eSNate Lawson 	return (ENOENT);
3192e8b4d56eSNate Lawson     if (!ACPI_PKG_VALID(res, 2))
3193e8b4d56eSNate Lawson 	goto out;
3194e8b4d56eSNate Lawson 
3195e8b4d56eSNate Lawson     /*
3196e8b4d56eSNate Lawson      * Element 1 of the _PRW object:
3197e8b4d56eSNate Lawson      * The lowest power system sleeping state that can be entered while still
3198e8b4d56eSNate Lawson      * providing wake functionality.  The sleeping state being entered must
3199e8b4d56eSNate Lawson      * be less than (i.e., higher power) or equal to this value.
3200e8b4d56eSNate Lawson      */
3201e8b4d56eSNate Lawson     if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
3202e8b4d56eSNate Lawson 	goto out;
3203e8b4d56eSNate Lawson 
3204e8b4d56eSNate Lawson     /*
3205e8b4d56eSNate Lawson      * Element 0 of the _PRW object:
3206e8b4d56eSNate Lawson      */
3207e8b4d56eSNate Lawson     switch (res->Package.Elements[0].Type) {
3208e8b4d56eSNate Lawson     case ACPI_TYPE_INTEGER:
3209e8b4d56eSNate Lawson 	/*
3210e8b4d56eSNate Lawson 	 * If the data type of this package element is numeric, then this
3211e8b4d56eSNate Lawson 	 * _PRW package element is the bit index in the GPEx_EN, in the
3212e8b4d56eSNate Lawson 	 * GPE blocks described in the FADT, of the enable bit that is
3213e8b4d56eSNate Lawson 	 * enabled for the wake event.
3214e8b4d56eSNate Lawson 	 */
3215e8b4d56eSNate Lawson 	prw->gpe_handle = NULL;
3216e8b4d56eSNate Lawson 	prw->gpe_bit = res->Package.Elements[0].Integer.Value;
3217e8b4d56eSNate Lawson 	error = 0;
3218e8b4d56eSNate Lawson 	break;
3219e8b4d56eSNate Lawson     case ACPI_TYPE_PACKAGE:
3220e8b4d56eSNate Lawson 	/*
3221e8b4d56eSNate Lawson 	 * If the data type of this package element is a package, then this
3222e8b4d56eSNate Lawson 	 * _PRW package element is itself a package containing two
3223e8b4d56eSNate Lawson 	 * elements.  The first is an object reference to the GPE Block
3224e8b4d56eSNate Lawson 	 * device that contains the GPE that will be triggered by the wake
3225e8b4d56eSNate Lawson 	 * event.  The second element is numeric and it contains the bit
3226e8b4d56eSNate Lawson 	 * index in the GPEx_EN, in the GPE Block referenced by the
3227e8b4d56eSNate Lawson 	 * first element in the package, of the enable bit that is enabled for
3228e8b4d56eSNate Lawson 	 * the wake event.
3229e8b4d56eSNate Lawson 	 *
3230e8b4d56eSNate Lawson 	 * For example, if this field is a package then it is of the form:
3231e8b4d56eSNate Lawson 	 * Package() {\_SB.PCI0.ISA.GPE, 2}
3232e8b4d56eSNate Lawson 	 */
3233e8b4d56eSNate Lawson 	res2 = &res->Package.Elements[0];
3234e8b4d56eSNate Lawson 	if (!ACPI_PKG_VALID(res2, 2))
3235e8b4d56eSNate Lawson 	    goto out;
3236e8b4d56eSNate Lawson 	prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
3237e8b4d56eSNate Lawson 	if (prw->gpe_handle == NULL)
3238e8b4d56eSNate Lawson 	    goto out;
3239e8b4d56eSNate Lawson 	if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
3240e8b4d56eSNate Lawson 	    goto out;
3241e8b4d56eSNate Lawson 	error = 0;
3242e8b4d56eSNate Lawson 	break;
3243e8b4d56eSNate Lawson     default:
3244e8b4d56eSNate Lawson 	goto out;
3245e8b4d56eSNate Lawson     }
3246e8b4d56eSNate Lawson 
3247d4b9ff91SNate Lawson     /* Elements 2 to N of the _PRW object are power resources. */
3248d4b9ff91SNate Lawson     power_count = res->Package.Count - 2;
3249d4b9ff91SNate Lawson     if (power_count > ACPI_PRW_MAX_POWERRES) {
3250d4b9ff91SNate Lawson 	printf("ACPI device %s has too many power resources\n", acpi_name(h));
3251d4b9ff91SNate Lawson 	power_count = 0;
3252d4b9ff91SNate Lawson     }
3253d4b9ff91SNate Lawson     prw->power_res_count = power_count;
3254d4b9ff91SNate Lawson     for (i = 0; i < power_count; i++)
3255d4b9ff91SNate Lawson 	prw->power_res[i] = res->Package.Elements[i];
3256e8b4d56eSNate Lawson 
3257e8b4d56eSNate Lawson out:
3258e8b4d56eSNate Lawson     if (prw_buffer.Pointer != NULL)
3259e8b4d56eSNate Lawson 	AcpiOsFree(prw_buffer.Pointer);
3260e8b4d56eSNate Lawson     return (error);
3261e8b4d56eSNate Lawson }
3262e8b4d56eSNate Lawson 
326315e32d5dSMike Smith /*
326415e32d5dSMike Smith  * ACPI Event Handlers
326515e32d5dSMike Smith  */
326615e32d5dSMike Smith 
326715e32d5dSMike Smith /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
326815e32d5dSMike Smith 
326915e32d5dSMike Smith static void
327015e32d5dSMike Smith acpi_system_eventhandler_sleep(void *arg, int state)
327115e32d5dSMike Smith {
32722d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
327300a30448SNate Lawson     int ret;
3274bee4aa4aSNate Lawson 
3275b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
327615e32d5dSMike Smith 
3277a0e73a12SJung-uk Kim     /* Check if button action is disabled or unknown. */
3278a0e73a12SJung-uk Kim     if (state == ACPI_STATE_UNKNOWN)
3279813d6dcaSNate Lawson 	return;
3280813d6dcaSNate Lawson 
328100a30448SNate Lawson     /* Request that the system prepare to enter the given suspend state. */
32822d0c82e8SJung-uk Kim     ret = acpi_ReqSleepState(sc, state);
328300a30448SNate Lawson     if (ret != 0)
32842d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
32852d0c82e8SJung-uk Kim 	    "request to enter state S%d failed (err %d)\n", state, ret);
3286bee4aa4aSNate Lawson 
32870ae55423SMike Smith     return_VOID;
328815e32d5dSMike Smith }
328915e32d5dSMike Smith 
329015e32d5dSMike Smith static void
329115e32d5dSMike Smith acpi_system_eventhandler_wakeup(void *arg, int state)
329215e32d5dSMike Smith {
3293bee4aa4aSNate Lawson 
3294b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
32950ae55423SMike Smith 
3296bee4aa4aSNate Lawson     /* Currently, nothing to do for wakeup. */
3297cb9b0d80SMike Smith 
32980ae55423SMike Smith     return_VOID;
329915e32d5dSMike Smith }
330015e32d5dSMike Smith 
330115e32d5dSMike Smith /*
330215e32d5dSMike Smith  * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
330315e32d5dSMike Smith  */
3304b5854f5fSJung-uk Kim static void
3305b5854f5fSJung-uk Kim acpi_invoke_sleep_eventhandler(void *context)
3306b5854f5fSJung-uk Kim {
3307b5854f5fSJung-uk Kim 
3308b5854f5fSJung-uk Kim     EVENTHANDLER_INVOKE(acpi_sleep_event, *(int *)context);
3309b5854f5fSJung-uk Kim }
3310b5854f5fSJung-uk Kim 
3311b5854f5fSJung-uk Kim static void
3312b5854f5fSJung-uk Kim acpi_invoke_wake_eventhandler(void *context)
3313b5854f5fSJung-uk Kim {
3314b5854f5fSJung-uk Kim 
3315b5854f5fSJung-uk Kim     EVENTHANDLER_INVOKE(acpi_wakeup_event, *(int *)context);
3316b5854f5fSJung-uk Kim }
3317b5854f5fSJung-uk Kim 
331815e32d5dSMike Smith UINT32
331933febf93SNate Lawson acpi_event_power_button_sleep(void *context)
332015e32d5dSMike Smith {
332115e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
332215e32d5dSMike Smith 
3323b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
33240ae55423SMike Smith 
3325b5854f5fSJung-uk Kim     if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3326b5854f5fSJung-uk Kim 	acpi_invoke_sleep_eventhandler, &sc->acpi_power_button_sx)))
3327b5854f5fSJung-uk Kim 	return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3328b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
332915e32d5dSMike Smith }
333015e32d5dSMike Smith 
333115e32d5dSMike Smith UINT32
333233febf93SNate Lawson acpi_event_power_button_wake(void *context)
333315e32d5dSMike Smith {
333415e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
333515e32d5dSMike Smith 
3336b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
33370ae55423SMike Smith 
3338b5854f5fSJung-uk Kim     if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3339b5854f5fSJung-uk Kim 	acpi_invoke_wake_eventhandler, &sc->acpi_power_button_sx)))
3340b5854f5fSJung-uk Kim 	return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3341b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
334215e32d5dSMike Smith }
334315e32d5dSMike Smith 
334415e32d5dSMike Smith UINT32
334533febf93SNate Lawson acpi_event_sleep_button_sleep(void *context)
334615e32d5dSMike Smith {
334715e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
334815e32d5dSMike Smith 
3349b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
33500ae55423SMike Smith 
3351b5854f5fSJung-uk Kim     if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3352b5854f5fSJung-uk Kim 	acpi_invoke_sleep_eventhandler, &sc->acpi_sleep_button_sx)))
3353b5854f5fSJung-uk Kim 	return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3354b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
335515e32d5dSMike Smith }
335615e32d5dSMike Smith 
335715e32d5dSMike Smith UINT32
335833febf93SNate Lawson acpi_event_sleep_button_wake(void *context)
335915e32d5dSMike Smith {
336015e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
336115e32d5dSMike Smith 
3362b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
33630ae55423SMike Smith 
3364b5854f5fSJung-uk Kim     if (ACPI_FAILURE(AcpiOsExecute(OSL_NOTIFY_HANDLER,
3365b5854f5fSJung-uk Kim 	acpi_invoke_wake_eventhandler, &sc->acpi_sleep_button_sx)))
3366b5854f5fSJung-uk Kim 	return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
3367b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
336815e32d5dSMike Smith }
336915e32d5dSMike Smith 
337015e32d5dSMike Smith /*
3371bee4aa4aSNate Lawson  * XXX This static buffer is suboptimal.  There is no locking so only
3372bee4aa4aSNate Lawson  * use this for single-threaded callers.
337315e32d5dSMike Smith  */
337415e32d5dSMike Smith char *
337515e32d5dSMike Smith acpi_name(ACPI_HANDLE handle)
337615e32d5dSMike Smith {
3377bee4aa4aSNate Lawson     ACPI_BUFFER buf;
3378bee4aa4aSNate Lawson     static char data[256];
337915e32d5dSMike Smith 
3380bee4aa4aSNate Lawson     buf.Length = sizeof(data);
3381bee4aa4aSNate Lawson     buf.Pointer = data;
3382cb9b0d80SMike Smith 
33830a9a1f44SNate Lawson     if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
3384bee4aa4aSNate Lawson 	return (data);
3385bee4aa4aSNate Lawson     return ("(unknown)");
338615e32d5dSMike Smith }
338715e32d5dSMike Smith 
338815e32d5dSMike Smith /*
338915e32d5dSMike Smith  * Debugging/bug-avoidance.  Avoid trying to fetch info on various
339015e32d5dSMike Smith  * parts of the namespace.
339115e32d5dSMike Smith  */
339215e32d5dSMike Smith int
339315e32d5dSMike Smith acpi_avoid(ACPI_HANDLE handle)
339415e32d5dSMike Smith {
33953c600cfbSJohn Baldwin     char	*cp, *env, *np;
339615e32d5dSMike Smith     int		len;
339715e32d5dSMike Smith 
339815e32d5dSMike Smith     np = acpi_name(handle);
339915e32d5dSMike Smith     if (*np == '\\')
340015e32d5dSMike Smith 	np++;
34012be111bfSDavide Italiano     if ((env = kern_getenv("debug.acpi.avoid")) == NULL)
340215e32d5dSMike Smith 	return (0);
340315e32d5dSMike Smith 
3404be2b1797SNate Lawson     /* Scan the avoid list checking for a match */
34053c600cfbSJohn Baldwin     cp = env;
340615e32d5dSMike Smith     for (;;) {
3407bee4aa4aSNate Lawson 	while (*cp != 0 && isspace(*cp))
340815e32d5dSMike Smith 	    cp++;
340915e32d5dSMike Smith 	if (*cp == 0)
341015e32d5dSMike Smith 	    break;
341115e32d5dSMike Smith 	len = 0;
3412bee4aa4aSNate Lawson 	while (cp[len] != 0 && !isspace(cp[len]))
341315e32d5dSMike Smith 	    len++;
3414d786139cSMaxime Henrion 	if (!strncmp(cp, np, len)) {
34153c600cfbSJohn Baldwin 	    freeenv(env);
34160ae55423SMike Smith 	    return(1);
3417d786139cSMaxime Henrion 	}
34180ae55423SMike Smith 	cp += len;
34190ae55423SMike Smith     }
34203c600cfbSJohn Baldwin     freeenv(env);
3421be2b1797SNate Lawson 
34220ae55423SMike Smith     return (0);
34230ae55423SMike Smith }
34240ae55423SMike Smith 
34250ae55423SMike Smith /*
34260ae55423SMike Smith  * Debugging/bug-avoidance.  Disable ACPI subsystem components.
34270ae55423SMike Smith  */
34280ae55423SMike Smith int
34290ae55423SMike Smith acpi_disabled(char *subsys)
34300ae55423SMike Smith {
343178689b15SMaxime Henrion     char	*cp, *env;
34320ae55423SMike Smith     int		len;
34330ae55423SMike Smith 
34342be111bfSDavide Italiano     if ((env = kern_getenv("debug.acpi.disabled")) == NULL)
34350ae55423SMike Smith 	return (0);
34363184cf5aSNate Lawson     if (strcmp(env, "all") == 0) {
343778689b15SMaxime Henrion 	freeenv(env);
34380ae55423SMike Smith 	return (1);
3439d786139cSMaxime Henrion     }
34400ae55423SMike Smith 
34413184cf5aSNate Lawson     /* Scan the disable list, checking for a match. */
344278689b15SMaxime Henrion     cp = env;
34430ae55423SMike Smith     for (;;) {
34443184cf5aSNate Lawson 	while (*cp != '\0' && isspace(*cp))
34450ae55423SMike Smith 	    cp++;
34463184cf5aSNate Lawson 	if (*cp == '\0')
34470ae55423SMike Smith 	    break;
34480ae55423SMike Smith 	len = 0;
34493184cf5aSNate Lawson 	while (cp[len] != '\0' && !isspace(cp[len]))
34500ae55423SMike Smith 	    len++;
34513184cf5aSNate Lawson 	if (strncmp(cp, subsys, len) == 0) {
345278689b15SMaxime Henrion 	    freeenv(env);
345315e32d5dSMike Smith 	    return (1);
3454d786139cSMaxime Henrion 	}
345515e32d5dSMike Smith 	cp += len;
345615e32d5dSMike Smith     }
345778689b15SMaxime Henrion     freeenv(env);
3458be2b1797SNate Lawson 
345915e32d5dSMike Smith     return (0);
346015e32d5dSMike Smith }
346115e32d5dSMike Smith 
346264de8019SJohn Baldwin static void
346364de8019SJohn Baldwin acpi_lookup(void *arg, const char *name, device_t *dev)
346464de8019SJohn Baldwin {
346564de8019SJohn Baldwin     ACPI_HANDLE handle;
346664de8019SJohn Baldwin 
346764de8019SJohn Baldwin     if (*dev != NULL)
346864de8019SJohn Baldwin 	return;
346964de8019SJohn Baldwin 
347064de8019SJohn Baldwin     /*
347164de8019SJohn Baldwin      * Allow any handle name that is specified as an absolute path and
347264de8019SJohn Baldwin      * starts with '\'.  We could restrict this to \_SB and friends,
347364de8019SJohn Baldwin      * but see acpi_probe_children() for notes on why we scan the entire
347464de8019SJohn Baldwin      * namespace for devices.
347564de8019SJohn Baldwin      *
347664de8019SJohn Baldwin      * XXX: The pathname argument to AcpiGetHandle() should be fixed to
347764de8019SJohn Baldwin      * be const.
347864de8019SJohn Baldwin      */
347964de8019SJohn Baldwin     if (name[0] != '\\')
348064de8019SJohn Baldwin 	return;
348164de8019SJohn Baldwin     if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, __DECONST(char *, name),
348264de8019SJohn Baldwin 	&handle)))
348364de8019SJohn Baldwin 	return;
348464de8019SJohn Baldwin     *dev = acpi_get_device(handle);
348564de8019SJohn Baldwin }
348664de8019SJohn Baldwin 
348715e32d5dSMike Smith /*
348815e32d5dSMike Smith  * Control interface.
348915e32d5dSMike Smith  *
34900ae55423SMike Smith  * We multiplex ioctls for all participating ACPI devices here.  Individual
3491be2b1797SNate Lawson  * drivers wanting to be accessible via /dev/acpi should use the
3492be2b1797SNate Lawson  * register/deregister interface to make their handlers visible.
349315e32d5dSMike Smith  */
34940ae55423SMike Smith struct acpi_ioctl_hook
34950ae55423SMike Smith {
34960ae55423SMike Smith     TAILQ_ENTRY(acpi_ioctl_hook) link;
34970ae55423SMike Smith     u_long			 cmd;
3498be2b1797SNate Lawson     acpi_ioctl_fn		 fn;
34990ae55423SMike Smith     void			 *arg;
35000ae55423SMike Smith };
35010ae55423SMike Smith 
35020ae55423SMike Smith static TAILQ_HEAD(,acpi_ioctl_hook)	acpi_ioctl_hooks;
35030ae55423SMike Smith static int				acpi_ioctl_hooks_initted;
35040ae55423SMike Smith 
35050ae55423SMike Smith int
3506be2b1797SNate Lawson acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
35070ae55423SMike Smith {
35080ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
35090ae55423SMike Smith 
35100ae55423SMike Smith     if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
35110ae55423SMike Smith 	return (ENOMEM);
35120ae55423SMike Smith     hp->cmd = cmd;
35130ae55423SMike Smith     hp->fn = fn;
35140ae55423SMike Smith     hp->arg = arg;
351515e2f34fSNate Lawson 
351615e2f34fSNate Lawson     ACPI_LOCK(acpi);
35170ae55423SMike Smith     if (acpi_ioctl_hooks_initted == 0) {
35180ae55423SMike Smith 	TAILQ_INIT(&acpi_ioctl_hooks);
35190ae55423SMike Smith 	acpi_ioctl_hooks_initted = 1;
35200ae55423SMike Smith     }
35210ae55423SMike Smith     TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
352215e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
352315e2f34fSNate Lawson 
35240ae55423SMike Smith     return (0);
35250ae55423SMike Smith }
35260ae55423SMike Smith 
35270ae55423SMike Smith void
3528be2b1797SNate Lawson acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
35290ae55423SMike Smith {
35300ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
35310ae55423SMike Smith 
353215e2f34fSNate Lawson     ACPI_LOCK(acpi);
35330ae55423SMike Smith     TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
353415e2f34fSNate Lawson 	if (hp->cmd == cmd && hp->fn == fn)
35350ae55423SMike Smith 	    break;
35360ae55423SMike Smith 
35370ae55423SMike Smith     if (hp != NULL) {
35380ae55423SMike Smith 	TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
35390ae55423SMike Smith 	free(hp, M_ACPIDEV);
35400ae55423SMike Smith     }
354115e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
35420ae55423SMike Smith }
35430ae55423SMike Smith 
354415e32d5dSMike Smith static int
354500b4e54aSWarner Losh acpiopen(struct cdev *dev, int flag, int fmt, struct thread *td)
354615e32d5dSMike Smith {
354715e32d5dSMike Smith     return (0);
354815e32d5dSMike Smith }
354915e32d5dSMike Smith 
355015e32d5dSMike Smith static int
355100b4e54aSWarner Losh acpiclose(struct cdev *dev, int flag, int fmt, struct thread *td)
355215e32d5dSMike Smith {
355315e32d5dSMike Smith     return (0);
355415e32d5dSMike Smith }
355515e32d5dSMike Smith 
355615e32d5dSMike Smith static int
355700b4e54aSWarner Losh acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
355815e32d5dSMike Smith {
355915e32d5dSMike Smith     struct acpi_softc		*sc;
35600ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
3561bee4aa4aSNate Lawson     int				error, state;
356215e32d5dSMike Smith 
3563a2e35898SDavid E. O'Brien     error = 0;
3564a2e35898SDavid E. O'Brien     hp = NULL;
356515e32d5dSMike Smith     sc = dev->si_drv1;
356615e32d5dSMike Smith 
35670ae55423SMike Smith     /*
35680ae55423SMike Smith      * Scan the list of registered ioctls, looking for handlers.
35690ae55423SMike Smith      */
357015e2f34fSNate Lawson     ACPI_LOCK(acpi);
3571bee4aa4aSNate Lawson     if (acpi_ioctl_hooks_initted)
35720ae55423SMike Smith 	TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3573bee4aa4aSNate Lawson 	    if (hp->cmd == cmd)
3574bee4aa4aSNate Lawson 		break;
35750ae55423SMike Smith 	}
357615e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
3577bee4aa4aSNate Lawson     if (hp)
3578bee4aa4aSNate Lawson 	return (hp->fn(cmd, addr, hp->arg));
35790ae55423SMike Smith 
35800ae55423SMike Smith     /*
3581a89fcf28STakanori Watanabe      * Core ioctls are not permitted for non-writable user.
3582a89fcf28STakanori Watanabe      * Currently, other ioctls just fetch information.
3583a89fcf28STakanori Watanabe      * Not changing system behavior.
3584a89fcf28STakanori Watanabe      */
3585be2b1797SNate Lawson     if ((flag & FWRITE) == 0)
3586be2b1797SNate Lawson 	return (EPERM);
3587a89fcf28STakanori Watanabe 
3588be2b1797SNate Lawson     /* Core system ioctls. */
358915e32d5dSMike Smith     switch (cmd) {
359000a30448SNate Lawson     case ACPIIO_REQSLPSTATE:
359100a30448SNate Lawson 	state = *(int *)addr;
359200a30448SNate Lawson 	if (state != ACPI_STATE_S5)
3593a0e73a12SJung-uk Kim 	    return (acpi_ReqSleepState(sc, state));
3594a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n");
3595a0e73a12SJung-uk Kim 	error = EOPNOTSUPP;
359600a30448SNate Lawson 	break;
359700a30448SNate Lawson     case ACPIIO_ACKSLPSTATE:
359800a30448SNate Lawson 	error = *(int *)addr;
359900a30448SNate Lawson 	error = acpi_AckSleepState(sc->acpi_clone, error);
360000a30448SNate Lawson 	break;
360100a30448SNate Lawson     case ACPIIO_SETSLPSTATE:	/* DEPRECATED */
360215e32d5dSMike Smith 	state = *(int *)addr;
3603a0e73a12SJung-uk Kim 	if (state < ACPI_STATE_S0 || state > ACPI_S_STATES_MAX)
3604a0e73a12SJung-uk Kim 	    return (EINVAL);
3605a0e73a12SJung-uk Kim 	if (!acpi_sleep_states[state])
3606a0e73a12SJung-uk Kim 	    return (EOPNOTSUPP);
3607a0e73a12SJung-uk Kim 	if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
3608a0e73a12SJung-uk Kim 	    error = ENXIO;
360915e32d5dSMike Smith 	break;
361015e32d5dSMike Smith     default:
3611bee4aa4aSNate Lawson 	error = ENXIO;
361215e32d5dSMike Smith 	break;
361315e32d5dSMike Smith     }
3614917d44c8SMitsuru IWASAKI 
361515e32d5dSMike Smith     return (error);
361615e32d5dSMike Smith }
361715e32d5dSMike Smith 
36181d073b1dSJohn Baldwin static int
3619a0e73a12SJung-uk Kim acpi_sname2sstate(const char *sname)
3620a0e73a12SJung-uk Kim {
3621a0e73a12SJung-uk Kim     int sstate;
3622a0e73a12SJung-uk Kim 
3623a0e73a12SJung-uk Kim     if (toupper(sname[0]) == 'S') {
3624a0e73a12SJung-uk Kim 	sstate = sname[1] - '0';
3625a0e73a12SJung-uk Kim 	if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5 &&
3626a0e73a12SJung-uk Kim 	    sname[2] == '\0')
3627a0e73a12SJung-uk Kim 	    return (sstate);
3628a0e73a12SJung-uk Kim     } else if (strcasecmp(sname, "NONE") == 0)
3629a0e73a12SJung-uk Kim 	return (ACPI_STATE_UNKNOWN);
3630a0e73a12SJung-uk Kim     return (-1);
3631a0e73a12SJung-uk Kim }
3632a0e73a12SJung-uk Kim 
3633a0e73a12SJung-uk Kim static const char *
3634a0e73a12SJung-uk Kim acpi_sstate2sname(int sstate)
3635a0e73a12SJung-uk Kim {
3636a0e73a12SJung-uk Kim     static const char *snames[] = { "S0", "S1", "S2", "S3", "S4", "S5" };
3637a0e73a12SJung-uk Kim 
3638a0e73a12SJung-uk Kim     if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5)
3639a0e73a12SJung-uk Kim 	return (snames[sstate]);
3640a0e73a12SJung-uk Kim     else if (sstate == ACPI_STATE_UNKNOWN)
3641a0e73a12SJung-uk Kim 	return ("NONE");
3642a0e73a12SJung-uk Kim     return (NULL);
3643a0e73a12SJung-uk Kim }
3644a0e73a12SJung-uk Kim 
3645a0e73a12SJung-uk Kim static int
3646d75de536SMitsuru IWASAKI acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3647d75de536SMitsuru IWASAKI {
3648d75de536SMitsuru IWASAKI     int error;
3649bee4aa4aSNate Lawson     struct sbuf sb;
3650a0e73a12SJung-uk Kim     UINT8 state;
3651d75de536SMitsuru IWASAKI 
3652bee4aa4aSNate Lawson     sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3653a0e73a12SJung-uk Kim     for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
3654a0e73a12SJung-uk Kim 	if (acpi_sleep_states[state])
3655a0e73a12SJung-uk Kim 	    sbuf_printf(&sb, "%s ", acpi_sstate2sname(state));
3656bee4aa4aSNate Lawson     sbuf_trim(&sb);
3657bee4aa4aSNate Lawson     sbuf_finish(&sb);
3658bee4aa4aSNate Lawson     error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3659bee4aa4aSNate Lawson     sbuf_delete(&sb);
3660d75de536SMitsuru IWASAKI     return (error);
3661d75de536SMitsuru IWASAKI }
3662d75de536SMitsuru IWASAKI 
3663d75de536SMitsuru IWASAKI static int
36641d073b1dSJohn Baldwin acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
36651d073b1dSJohn Baldwin {
36661d073b1dSJohn Baldwin     char sleep_state[10];
3667a0e73a12SJung-uk Kim     int error, new_state, old_state;
36681d073b1dSJohn Baldwin 
3669a0e73a12SJung-uk Kim     old_state = *(int *)oidp->oid_arg1;
3670a0e73a12SJung-uk Kim     strlcpy(sleep_state, acpi_sstate2sname(old_state), sizeof(sleep_state));
36711d073b1dSJohn Baldwin     error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
36721d073b1dSJohn Baldwin     if (error == 0 && req->newptr != NULL) {
3673a0e73a12SJung-uk Kim 	new_state = acpi_sname2sstate(sleep_state);
3674a0e73a12SJung-uk Kim 	if (new_state < ACPI_STATE_S1)
3675a0e73a12SJung-uk Kim 	    return (EINVAL);
367654b43614SJung-uk Kim 	if (new_state < ACPI_S_STATE_COUNT && !acpi_sleep_states[new_state])
3677a0e73a12SJung-uk Kim 	    return (EOPNOTSUPP);
3678be2b1797SNate Lawson 	if (new_state != old_state)
3679a0e73a12SJung-uk Kim 	    *(int *)oidp->oid_arg1 = new_state;
36801d073b1dSJohn Baldwin     }
36811d073b1dSJohn Baldwin     return (error);
36821d073b1dSJohn Baldwin }
36831d073b1dSJohn Baldwin 
36849b937d48SNate Lawson /* Inform devctl(4) when we receive a Notify. */
36859b937d48SNate Lawson void
36869b937d48SNate Lawson acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
36879b937d48SNate Lawson {
36889b937d48SNate Lawson     char		notify_buf[16];
36899b937d48SNate Lawson     ACPI_BUFFER		handle_buf;
36909b937d48SNate Lawson     ACPI_STATUS		status;
36919b937d48SNate Lawson 
36929b937d48SNate Lawson     if (subsystem == NULL)
36939b937d48SNate Lawson 	return;
36949b937d48SNate Lawson 
36959b937d48SNate Lawson     handle_buf.Pointer = NULL;
36969b937d48SNate Lawson     handle_buf.Length = ACPI_ALLOCATE_BUFFER;
36970594dadeSJung-uk Kim     status = AcpiNsHandleToPathname(h, &handle_buf, FALSE);
36989b937d48SNate Lawson     if (ACPI_FAILURE(status))
36999b937d48SNate Lawson 	return;
37009b937d48SNate Lawson     snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
37019b937d48SNate Lawson     devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
37029b937d48SNate Lawson     AcpiOsFree(handle_buf.Pointer);
37039b937d48SNate Lawson }
37049b937d48SNate Lawson 
370515e32d5dSMike Smith #ifdef ACPI_DEBUG
37060ae55423SMike Smith /*
37070ae55423SMike Smith  * Support for parsing debug options from the kernel environment.
37080ae55423SMike Smith  *
37090ae55423SMike Smith  * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
37100ae55423SMike Smith  * by specifying the names of the bits in the debug.acpi.layer and
37110ae55423SMike Smith  * debug.acpi.level environment variables.  Bits may be unset by
37120ae55423SMike Smith  * prefixing the bit name with !.
37130ae55423SMike Smith  */
371415e32d5dSMike Smith struct debugtag
371515e32d5dSMike Smith {
371615e32d5dSMike Smith     char	*name;
371715e32d5dSMike Smith     UINT32	value;
371815e32d5dSMike Smith };
371915e32d5dSMike Smith 
372015e32d5dSMike Smith static struct debugtag	dbg_layer[] = {
3721c5ba0be4SMike Smith     {"ACPI_UTILITIES",		ACPI_UTILITIES},
3722c5ba0be4SMike Smith     {"ACPI_HARDWARE",		ACPI_HARDWARE},
3723c5ba0be4SMike Smith     {"ACPI_EVENTS",		ACPI_EVENTS},
3724c5ba0be4SMike Smith     {"ACPI_TABLES",		ACPI_TABLES},
3725c5ba0be4SMike Smith     {"ACPI_NAMESPACE",		ACPI_NAMESPACE},
3726c5ba0be4SMike Smith     {"ACPI_PARSER",		ACPI_PARSER},
3727c5ba0be4SMike Smith     {"ACPI_DISPATCHER",		ACPI_DISPATCHER},
3728c5ba0be4SMike Smith     {"ACPI_EXECUTER",		ACPI_EXECUTER},
3729c5ba0be4SMike Smith     {"ACPI_RESOURCES",		ACPI_RESOURCES},
3730d62ab2f4SMitsuru IWASAKI     {"ACPI_CA_DEBUGGER",	ACPI_CA_DEBUGGER},
37314c1cdee6SMike Smith     {"ACPI_OS_SERVICES",	ACPI_OS_SERVICES},
3732d62ab2f4SMitsuru IWASAKI     {"ACPI_CA_DISASSEMBLER",	ACPI_CA_DISASSEMBLER},
3733297835bcSNate Lawson     {"ACPI_ALL_COMPONENTS",	ACPI_ALL_COMPONENTS},
37344c1cdee6SMike Smith 
3735c5ba0be4SMike Smith     {"ACPI_AC_ADAPTER",		ACPI_AC_ADAPTER},
3736c5ba0be4SMike Smith     {"ACPI_BATTERY",		ACPI_BATTERY},
37373184cf5aSNate Lawson     {"ACPI_BUS",		ACPI_BUS},
3738c5ba0be4SMike Smith     {"ACPI_BUTTON",		ACPI_BUTTON},
37393184cf5aSNate Lawson     {"ACPI_EC", 		ACPI_EC},
37403184cf5aSNate Lawson     {"ACPI_FAN",		ACPI_FAN},
37413184cf5aSNate Lawson     {"ACPI_POWERRES",		ACPI_POWERRES},
37424c1cdee6SMike Smith     {"ACPI_PROCESSOR",		ACPI_PROCESSOR},
3743cb9b0d80SMike Smith     {"ACPI_THERMAL",		ACPI_THERMAL},
37443184cf5aSNate Lawson     {"ACPI_TIMER",		ACPI_TIMER},
3745b53f2771SMike Smith     {"ACPI_ALL_DRIVERS",	ACPI_ALL_DRIVERS},
374615e32d5dSMike Smith     {NULL, 0}
374715e32d5dSMike Smith };
374815e32d5dSMike Smith 
374915e32d5dSMike Smith static struct debugtag dbg_level[] = {
37509501b603SJohn Baldwin     {"ACPI_LV_INIT",		ACPI_LV_INIT},
37514c1cdee6SMike Smith     {"ACPI_LV_DEBUG_OBJECT",	ACPI_LV_DEBUG_OBJECT},
37529501b603SJohn Baldwin     {"ACPI_LV_INFO",		ACPI_LV_INFO},
3753cc6455afSJung-uk Kim     {"ACPI_LV_REPAIR",		ACPI_LV_REPAIR},
37544c1cdee6SMike Smith     {"ACPI_LV_ALL_EXCEPTIONS",	ACPI_LV_ALL_EXCEPTIONS},
3755d62ab2f4SMitsuru IWASAKI 
3756d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 1 [Standard Trace Level] */
3757297835bcSNate Lawson     {"ACPI_LV_INIT_NAMES",	ACPI_LV_INIT_NAMES},
37584c1cdee6SMike Smith     {"ACPI_LV_PARSE",		ACPI_LV_PARSE},
37594c1cdee6SMike Smith     {"ACPI_LV_LOAD",		ACPI_LV_LOAD},
3760d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_DISPATCH",	ACPI_LV_DISPATCH},
37614c1cdee6SMike Smith     {"ACPI_LV_EXEC",		ACPI_LV_EXEC},
37624c1cdee6SMike Smith     {"ACPI_LV_NAMES",		ACPI_LV_NAMES},
37634c1cdee6SMike Smith     {"ACPI_LV_OPREGION",	ACPI_LV_OPREGION},
37644c1cdee6SMike Smith     {"ACPI_LV_BFIELD",		ACPI_LV_BFIELD},
37654c1cdee6SMike Smith     {"ACPI_LV_TABLES",		ACPI_LV_TABLES},
37664c1cdee6SMike Smith     {"ACPI_LV_VALUES",		ACPI_LV_VALUES},
37674c1cdee6SMike Smith     {"ACPI_LV_OBJECTS",		ACPI_LV_OBJECTS},
37684c1cdee6SMike Smith     {"ACPI_LV_RESOURCES",	ACPI_LV_RESOURCES},
37694c1cdee6SMike Smith     {"ACPI_LV_USER_REQUESTS",	ACPI_LV_USER_REQUESTS},
37704c1cdee6SMike Smith     {"ACPI_LV_PACKAGE",		ACPI_LV_PACKAGE},
3771d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY1",	ACPI_LV_VERBOSITY1},
3772d62ab2f4SMitsuru IWASAKI 
3773d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 2 [Function tracing and memory allocation] */
3774d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_ALLOCATIONS",	ACPI_LV_ALLOCATIONS},
3775d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_FUNCTIONS",	ACPI_LV_FUNCTIONS},
3776d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_OPTIMIZATIONS",	ACPI_LV_OPTIMIZATIONS},
3777d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY2",	ACPI_LV_VERBOSITY2},
37784c1cdee6SMike Smith     {"ACPI_LV_ALL",		ACPI_LV_ALL},
3779d62ab2f4SMitsuru IWASAKI 
3780d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3781d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_MUTEX",		ACPI_LV_MUTEX},
3782d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_THREADS",		ACPI_LV_THREADS},
3783d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_IO",		ACPI_LV_IO},
3784d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_INTERRUPTS",	ACPI_LV_INTERRUPTS},
3785d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY3",	ACPI_LV_VERBOSITY3},
3786d62ab2f4SMitsuru IWASAKI 
3787d62ab2f4SMitsuru IWASAKI     /* Exceptionally verbose output -- also used in the global "DebugLevel"  */
378898479b04SMitsuru IWASAKI     {"ACPI_LV_AML_DISASSEMBLE",	ACPI_LV_AML_DISASSEMBLE},
378998479b04SMitsuru IWASAKI     {"ACPI_LV_VERBOSE_INFO",	ACPI_LV_VERBOSE_INFO},
379098479b04SMitsuru IWASAKI     {"ACPI_LV_FULL_TABLES",	ACPI_LV_FULL_TABLES},
379198479b04SMitsuru IWASAKI     {"ACPI_LV_EVENTS",		ACPI_LV_EVENTS},
379298479b04SMitsuru IWASAKI     {"ACPI_LV_VERBOSE",		ACPI_LV_VERBOSE},
379315e32d5dSMike Smith     {NULL, 0}
379415e32d5dSMike Smith };
379515e32d5dSMike Smith 
379615e32d5dSMike Smith static void
379715e32d5dSMike Smith acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
379815e32d5dSMike Smith {
379915e32d5dSMike Smith     char	*ep;
380015e32d5dSMike Smith     int		i, l;
38010ae55423SMike Smith     int		set;
380215e32d5dSMike Smith 
380315e32d5dSMike Smith     while (*cp) {
380415e32d5dSMike Smith 	if (isspace(*cp)) {
380515e32d5dSMike Smith 	    cp++;
380615e32d5dSMike Smith 	    continue;
380715e32d5dSMike Smith 	}
380815e32d5dSMike Smith 	ep = cp;
380915e32d5dSMike Smith 	while (*ep && !isspace(*ep))
381015e32d5dSMike Smith 	    ep++;
38110ae55423SMike Smith 	if (*cp == '!') {
38120ae55423SMike Smith 	    set = 0;
38130ae55423SMike Smith 	    cp++;
38140ae55423SMike Smith 	    if (cp == ep)
38150ae55423SMike Smith 		continue;
38160ae55423SMike Smith 	} else {
38170ae55423SMike Smith 	    set = 1;
38180ae55423SMike Smith 	}
381915e32d5dSMike Smith 	l = ep - cp;
382015e32d5dSMike Smith 	for (i = 0; tag[i].name != NULL; i++) {
382115e32d5dSMike Smith 	    if (!strncmp(cp, tag[i].name, l)) {
3822be2b1797SNate Lawson 		if (set)
382315e32d5dSMike Smith 		    *flag |= tag[i].value;
3824be2b1797SNate Lawson 		else
38250ae55423SMike Smith 		    *flag &= ~tag[i].value;
382615e32d5dSMike Smith 	    }
382715e32d5dSMike Smith 	}
382815e32d5dSMike Smith 	cp = ep;
382915e32d5dSMike Smith     }
383015e32d5dSMike Smith }
383115e32d5dSMike Smith 
383215e32d5dSMike Smith static void
38332a4ac806SMike Smith acpi_set_debugging(void *junk)
383415e32d5dSMike Smith {
38357e639165SNate Lawson     char	*layer, *level;
383615e32d5dSMike Smith 
38371d7b121cSNate Lawson     if (cold) {
38380ae55423SMike Smith 	AcpiDbgLayer = 0;
38390ae55423SMike Smith 	AcpiDbgLevel = 0;
38401d7b121cSNate Lawson     }
38411d7b121cSNate Lawson 
38422be111bfSDavide Italiano     layer = kern_getenv("debug.acpi.layer");
38432be111bfSDavide Italiano     level = kern_getenv("debug.acpi.level");
38447e639165SNate Lawson     if (layer == NULL && level == NULL)
38457e639165SNate Lawson 	return;
38460ae55423SMike Smith 
38477e639165SNate Lawson     printf("ACPI set debug");
38487e639165SNate Lawson     if (layer != NULL) {
38497e639165SNate Lawson 	if (strcmp("NONE", layer) != 0)
38507e639165SNate Lawson 	    printf(" layer '%s'", layer);
38517e639165SNate Lawson 	acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
38527e639165SNate Lawson 	freeenv(layer);
38531d7b121cSNate Lawson     }
38547e639165SNate Lawson     if (level != NULL) {
38557e639165SNate Lawson 	if (strcmp("NONE", level) != 0)
38567e639165SNate Lawson 	    printf(" level '%s'", level);
38577e639165SNate Lawson 	acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
38587e639165SNate Lawson 	freeenv(level);
38597e639165SNate Lawson     }
38607e639165SNate Lawson     printf("\n");
386115e32d5dSMike Smith }
3862bee4aa4aSNate Lawson 
3863be2b1797SNate Lawson SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3864be2b1797SNate Lawson 	NULL);
38651d7b121cSNate Lawson 
38661d7b121cSNate Lawson static int
38671d7b121cSNate Lawson acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
38681d7b121cSNate Lawson {
386954f6bca0SNate Lawson     int		 error, *dbg;
38701d7b121cSNate Lawson     struct	 debugtag *tag;
387154f6bca0SNate Lawson     struct	 sbuf sb;
38720e1152fcSHans Petter Selasky     char	 temp[128];
38731d7b121cSNate Lawson 
387454f6bca0SNate Lawson     if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
387554f6bca0SNate Lawson 	return (ENOMEM);
38761d7b121cSNate Lawson     if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
38771d7b121cSNate Lawson 	tag = &dbg_layer[0];
38781d7b121cSNate Lawson 	dbg = &AcpiDbgLayer;
38791d7b121cSNate Lawson     } else {
38801d7b121cSNate Lawson 	tag = &dbg_level[0];
38811d7b121cSNate Lawson 	dbg = &AcpiDbgLevel;
38821d7b121cSNate Lawson     }
38831d7b121cSNate Lawson 
38841d7b121cSNate Lawson     /* Get old values if this is a get request. */
388515e2f34fSNate Lawson     ACPI_SERIAL_BEGIN(acpi);
38861d7b121cSNate Lawson     if (*dbg == 0) {
388754f6bca0SNate Lawson 	sbuf_cpy(&sb, "NONE");
38881d7b121cSNate Lawson     } else if (req->newptr == NULL) {
38891d7b121cSNate Lawson 	for (; tag->name != NULL; tag++) {
389054f6bca0SNate Lawson 	    if ((*dbg & tag->value) == tag->value)
389154f6bca0SNate Lawson 		sbuf_printf(&sb, "%s ", tag->name);
38921d7b121cSNate Lawson 	}
38931d7b121cSNate Lawson     }
389454f6bca0SNate Lawson     sbuf_trim(&sb);
389554f6bca0SNate Lawson     sbuf_finish(&sb);
38960e1152fcSHans Petter Selasky     strlcpy(temp, sbuf_data(&sb), sizeof(temp));
389754f6bca0SNate Lawson     sbuf_delete(&sb);
38981d7b121cSNate Lawson 
38990e1152fcSHans Petter Selasky     error = sysctl_handle_string(oidp, temp, sizeof(temp), req);
39000e1152fcSHans Petter Selasky 
39010e1152fcSHans Petter Selasky     /* Check for error or no change */
39021d7b121cSNate Lawson     if (error == 0 && req->newptr != NULL) {
39031d7b121cSNate Lawson 	*dbg = 0;
39040e1152fcSHans Petter Selasky 	kern_setenv((char *)oidp->oid_arg1, temp);
39051d7b121cSNate Lawson 	acpi_set_debugging(NULL);
39061d7b121cSNate Lawson     }
390715e2f34fSNate Lawson     ACPI_SERIAL_END(acpi);
39081d7b121cSNate Lawson 
39091d7b121cSNate Lawson     return (error);
39101d7b121cSNate Lawson }
3911bee4aa4aSNate Lawson 
39121d7b121cSNate Lawson SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
39131d7b121cSNate Lawson 	    "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
39141d7b121cSNate Lawson SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
39151d7b121cSNate Lawson 	    "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3916bee4aa4aSNate Lawson #endif /* ACPI_DEBUG */
3917f9390180SMitsuru IWASAKI 
3918f9390180SMitsuru IWASAKI static int
39192a18c71dSJung-uk Kim acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS)
39202a18c71dSJung-uk Kim {
39212a18c71dSJung-uk Kim 	int	error;
39222a18c71dSJung-uk Kim 	int	old;
39232a18c71dSJung-uk Kim 
39242a18c71dSJung-uk Kim 	old = acpi_debug_objects;
39252a18c71dSJung-uk Kim 	error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req);
39262a18c71dSJung-uk Kim 	if (error != 0 || req->newptr == NULL)
39272a18c71dSJung-uk Kim 		return (error);
39282a18c71dSJung-uk Kim 	if (old == acpi_debug_objects || (old && acpi_debug_objects))
39292a18c71dSJung-uk Kim 		return (0);
39302a18c71dSJung-uk Kim 
39312a18c71dSJung-uk Kim 	ACPI_SERIAL_BEGIN(acpi);
39322a18c71dSJung-uk Kim 	AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
39332a18c71dSJung-uk Kim 	ACPI_SERIAL_END(acpi);
39342a18c71dSJung-uk Kim 
39352a18c71dSJung-uk Kim 	return (0);
39362a18c71dSJung-uk Kim }
39372a18c71dSJung-uk Kim 
39382a18c71dSJung-uk Kim static int
3939ae19af49SJung-uk Kim acpi_parse_interfaces(char *str, struct acpi_interface *iface)
3940ae19af49SJung-uk Kim {
3941ae19af49SJung-uk Kim 	char *p;
3942ae19af49SJung-uk Kim 	size_t len;
3943ae19af49SJung-uk Kim 	int i, j;
3944ae19af49SJung-uk Kim 
3945ae19af49SJung-uk Kim 	p = str;
3946ae19af49SJung-uk Kim 	while (isspace(*p) || *p == ',')
3947ae19af49SJung-uk Kim 		p++;
3948ae19af49SJung-uk Kim 	len = strlen(p);
3949ae19af49SJung-uk Kim 	if (len == 0)
3950ae19af49SJung-uk Kim 		return (0);
3951ae19af49SJung-uk Kim 	p = strdup(p, M_TEMP);
3952ae19af49SJung-uk Kim 	for (i = 0; i < len; i++)
3953ae19af49SJung-uk Kim 		if (p[i] == ',')
3954ae19af49SJung-uk Kim 			p[i] = '\0';
3955ae19af49SJung-uk Kim 	i = j = 0;
3956ae19af49SJung-uk Kim 	while (i < len)
3957ae19af49SJung-uk Kim 		if (isspace(p[i]) || p[i] == '\0')
3958ae19af49SJung-uk Kim 			i++;
3959ae19af49SJung-uk Kim 		else {
3960ae19af49SJung-uk Kim 			i += strlen(p + i) + 1;
3961ae19af49SJung-uk Kim 			j++;
3962ae19af49SJung-uk Kim 		}
3963ae19af49SJung-uk Kim 	if (j == 0) {
3964ae19af49SJung-uk Kim 		free(p, M_TEMP);
3965ae19af49SJung-uk Kim 		return (0);
3966ae19af49SJung-uk Kim 	}
3967ae19af49SJung-uk Kim 	iface->data = malloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK);
3968ae19af49SJung-uk Kim 	iface->num = j;
3969ae19af49SJung-uk Kim 	i = j = 0;
3970ae19af49SJung-uk Kim 	while (i < len)
3971ae19af49SJung-uk Kim 		if (isspace(p[i]) || p[i] == '\0')
3972ae19af49SJung-uk Kim 			i++;
3973ae19af49SJung-uk Kim 		else {
3974ae19af49SJung-uk Kim 			iface->data[j] = p + i;
3975ae19af49SJung-uk Kim 			i += strlen(p + i) + 1;
3976ae19af49SJung-uk Kim 			j++;
3977ae19af49SJung-uk Kim 		}
3978ae19af49SJung-uk Kim 
3979ae19af49SJung-uk Kim 	return (j);
3980ae19af49SJung-uk Kim }
3981ae19af49SJung-uk Kim 
3982ae19af49SJung-uk Kim static void
3983ae19af49SJung-uk Kim acpi_free_interfaces(struct acpi_interface *iface)
3984ae19af49SJung-uk Kim {
3985ae19af49SJung-uk Kim 
3986ae19af49SJung-uk Kim 	free(iface->data[0], M_TEMP);
3987ae19af49SJung-uk Kim 	free(iface->data, M_TEMP);
3988ae19af49SJung-uk Kim }
3989ae19af49SJung-uk Kim 
3990ae19af49SJung-uk Kim static void
3991ae19af49SJung-uk Kim acpi_reset_interfaces(device_t dev)
3992ae19af49SJung-uk Kim {
3993ae19af49SJung-uk Kim 	struct acpi_interface list;
3994ae19af49SJung-uk Kim 	ACPI_STATUS status;
3995ae19af49SJung-uk Kim 	int i;
3996ae19af49SJung-uk Kim 
3997ae19af49SJung-uk Kim 	if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) {
3998ae19af49SJung-uk Kim 		for (i = 0; i < list.num; i++) {
3999ae19af49SJung-uk Kim 			status = AcpiInstallInterface(list.data[i]);
4000ae19af49SJung-uk Kim 			if (ACPI_FAILURE(status))
4001ae19af49SJung-uk Kim 				device_printf(dev,
4002ae19af49SJung-uk Kim 				    "failed to install _OSI(\"%s\"): %s\n",
4003ae19af49SJung-uk Kim 				    list.data[i], AcpiFormatException(status));
4004ae19af49SJung-uk Kim 			else if (bootverbose)
4005ae19af49SJung-uk Kim 				device_printf(dev, "installed _OSI(\"%s\")\n",
4006ae19af49SJung-uk Kim 				    list.data[i]);
4007ae19af49SJung-uk Kim 		}
4008ae19af49SJung-uk Kim 		acpi_free_interfaces(&list);
4009ae19af49SJung-uk Kim 	}
4010ae19af49SJung-uk Kim 	if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) {
4011ae19af49SJung-uk Kim 		for (i = 0; i < list.num; i++) {
4012ae19af49SJung-uk Kim 			status = AcpiRemoveInterface(list.data[i]);
4013ae19af49SJung-uk Kim 			if (ACPI_FAILURE(status))
4014ae19af49SJung-uk Kim 				device_printf(dev,
4015ae19af49SJung-uk Kim 				    "failed to remove _OSI(\"%s\"): %s\n",
4016ae19af49SJung-uk Kim 				    list.data[i], AcpiFormatException(status));
4017ae19af49SJung-uk Kim 			else if (bootverbose)
4018ae19af49SJung-uk Kim 				device_printf(dev, "removed _OSI(\"%s\")\n",
4019ae19af49SJung-uk Kim 				    list.data[i]);
4020ae19af49SJung-uk Kim 		}
4021ae19af49SJung-uk Kim 		acpi_free_interfaces(&list);
4022ae19af49SJung-uk Kim 	}
4023ae19af49SJung-uk Kim }
4024ae19af49SJung-uk Kim 
4025ae19af49SJung-uk Kim static int
4026f9390180SMitsuru IWASAKI acpi_pm_func(u_long cmd, void *arg, ...)
4027f9390180SMitsuru IWASAKI {
4028f9390180SMitsuru IWASAKI 	int	state, acpi_state;
4029f9390180SMitsuru IWASAKI 	int	error;
4030f9390180SMitsuru IWASAKI 	struct	acpi_softc *sc;
4031f9390180SMitsuru IWASAKI 	va_list	ap;
4032f9390180SMitsuru IWASAKI 
4033f9390180SMitsuru IWASAKI 	error = 0;
4034f9390180SMitsuru IWASAKI 	switch (cmd) {
4035f9390180SMitsuru IWASAKI 	case POWER_CMD_SUSPEND:
4036f9390180SMitsuru IWASAKI 		sc = (struct acpi_softc *)arg;
4037f9390180SMitsuru IWASAKI 		if (sc == NULL) {
4038f9390180SMitsuru IWASAKI 			error = EINVAL;
4039f9390180SMitsuru IWASAKI 			goto out;
4040f9390180SMitsuru IWASAKI 		}
4041f9390180SMitsuru IWASAKI 
4042f9390180SMitsuru IWASAKI 		va_start(ap, arg);
4043f9390180SMitsuru IWASAKI 		state = va_arg(ap, int);
4044f9390180SMitsuru IWASAKI 		va_end(ap);
4045f9390180SMitsuru IWASAKI 
4046f9390180SMitsuru IWASAKI 		switch (state) {
4047f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_STANDBY:
4048f9390180SMitsuru IWASAKI 			acpi_state = sc->acpi_standby_sx;
4049f9390180SMitsuru IWASAKI 			break;
4050f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_SUSPEND:
4051f9390180SMitsuru IWASAKI 			acpi_state = sc->acpi_suspend_sx;
4052f9390180SMitsuru IWASAKI 			break;
4053f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_HIBERNATE:
4054f9390180SMitsuru IWASAKI 			acpi_state = ACPI_STATE_S4;
4055f9390180SMitsuru IWASAKI 			break;
4056f9390180SMitsuru IWASAKI 		default:
4057f9390180SMitsuru IWASAKI 			error = EINVAL;
4058f9390180SMitsuru IWASAKI 			goto out;
4059f9390180SMitsuru IWASAKI 		}
4060f9390180SMitsuru IWASAKI 
406100a30448SNate Lawson 		if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
406200a30448SNate Lawson 			error = ENXIO;
4063f9390180SMitsuru IWASAKI 		break;
4064f9390180SMitsuru IWASAKI 	default:
4065f9390180SMitsuru IWASAKI 		error = EINVAL;
4066f9390180SMitsuru IWASAKI 		goto out;
4067f9390180SMitsuru IWASAKI 	}
4068f9390180SMitsuru IWASAKI 
4069f9390180SMitsuru IWASAKI out:
4070f9390180SMitsuru IWASAKI 	return (error);
4071f9390180SMitsuru IWASAKI }
4072f9390180SMitsuru IWASAKI 
4073f9390180SMitsuru IWASAKI static void
4074f9390180SMitsuru IWASAKI acpi_pm_register(void *arg)
4075f9390180SMitsuru IWASAKI {
4076be2b1797SNate Lawson     if (!cold || resource_disabled("acpi", 0))
40776c407052SMitsuru IWASAKI 	return;
4078f9390180SMitsuru IWASAKI 
4079f9390180SMitsuru IWASAKI     power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
4080f9390180SMitsuru IWASAKI }
4081f9390180SMitsuru IWASAKI 
4082f9390180SMitsuru IWASAKI SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);
4083