xref: /freebsd/sys/dev/acpica/acpi.c (revision b1f9b9965bd0cc2f4ab1ac38bef46db398e83a59)
115e32d5dSMike Smith /*-
215e32d5dSMike Smith  * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
315e32d5dSMike Smith  * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
4cb9b0d80SMike Smith  * Copyright (c) 2000, 2001 Michael Smith
515e32d5dSMike Smith  * Copyright (c) 2000 BSDi
615e32d5dSMike Smith  * All rights reserved.
715e32d5dSMike Smith  *
815e32d5dSMike Smith  * Redistribution and use in source and binary forms, with or without
915e32d5dSMike Smith  * modification, are permitted provided that the following conditions
1015e32d5dSMike Smith  * are met:
1115e32d5dSMike Smith  * 1. Redistributions of source code must retain the above copyright
1215e32d5dSMike Smith  *    notice, this list of conditions and the following disclaimer.
1315e32d5dSMike Smith  * 2. Redistributions in binary form must reproduce the above copyright
1415e32d5dSMike Smith  *    notice, this list of conditions and the following disclaimer in the
1515e32d5dSMike Smith  *    documentation and/or other materials provided with the distribution.
1615e32d5dSMike Smith  *
1715e32d5dSMike Smith  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
1815e32d5dSMike Smith  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1915e32d5dSMike Smith  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
2015e32d5dSMike Smith  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
2115e32d5dSMike Smith  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
2215e32d5dSMike Smith  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2315e32d5dSMike Smith  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2415e32d5dSMike Smith  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
2515e32d5dSMike Smith  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
2615e32d5dSMike Smith  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
2715e32d5dSMike Smith  * SUCH DAMAGE.
2815e32d5dSMike Smith  */
2915e32d5dSMike Smith 
30dad97feeSDavid E. O'Brien #include <sys/cdefs.h>
31dad97feeSDavid E. O'Brien __FBSDID("$FreeBSD$");
32dad97feeSDavid E. O'Brien 
3315e32d5dSMike Smith #include "opt_acpi.h"
3415e32d5dSMike Smith #include <sys/param.h>
3515e32d5dSMike Smith #include <sys/kernel.h>
36fb919e4dSMark Murray #include <sys/proc.h>
37a89fcf28STakanori Watanabe #include <sys/fcntl.h>
3815e32d5dSMike Smith #include <sys/malloc.h>
39fe12f24bSPoul-Henning Kamp #include <sys/module.h>
4015e32d5dSMike Smith #include <sys/bus.h>
4115e32d5dSMike Smith #include <sys/conf.h>
4215e32d5dSMike Smith #include <sys/ioccom.h>
4315e32d5dSMike Smith #include <sys/reboot.h>
4415e32d5dSMike Smith #include <sys/sysctl.h>
4515e32d5dSMike Smith #include <sys/ctype.h>
461611ea87SMitsuru IWASAKI #include <sys/linker.h>
47f9390180SMitsuru IWASAKI #include <sys/power.h>
4854f6bca0SNate Lawson #include <sys/sbuf.h>
49c66d2b38SJung-uk Kim #include <sys/sched.h>
50eeb3a05fSNate Lawson #include <sys/smp.h>
51c66d2b38SJung-uk Kim #include <sys/timetc.h>
5215e32d5dSMike Smith 
53d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
54d320e05cSJohn Baldwin #include <machine/pci_cfgreg.h>
55d320e05cSJohn Baldwin #endif
5615e32d5dSMike Smith #include <machine/resource.h>
57dc750869SNate Lawson #include <machine/bus.h>
58dc750869SNate Lawson #include <sys/rman.h>
59bc0f2195SMike Smith #include <isa/isavar.h>
60c796e27bSNate Lawson #include <isa/pnpvar.h>
61bc0f2195SMike Smith 
62129d3046SJung-uk Kim #include <contrib/dev/acpica/include/acpi.h>
63129d3046SJung-uk Kim #include <contrib/dev/acpica/include/accommon.h>
64129d3046SJung-uk Kim #include <contrib/dev/acpica/include/acnamesp.h>
65129d3046SJung-uk Kim 
6615e32d5dSMike Smith #include <dev/acpica/acpivar.h>
6715e32d5dSMike Smith #include <dev/acpica/acpiio.h>
6815e32d5dSMike Smith 
6910ce62b9SNate Lawson #include "pci_if.h"
7010ce62b9SNate Lawson #include <dev/pci/pcivar.h>
7110ce62b9SNate Lawson #include <dev/pci/pci_private.h>
7210ce62b9SNate Lawson 
732be4e471SJung-uk Kim #include <vm/vm_param.h>
742be4e471SJung-uk Kim 
7515e32d5dSMike Smith MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
7615e32d5dSMike Smith 
77be2b1797SNate Lawson /* Hooks for the ACPI CA debugging infrastructure */
78cb9b0d80SMike Smith #define _COMPONENT	ACPI_BUS
79b53f2771SMike Smith ACPI_MODULE_NAME("ACPI")
800ae55423SMike Smith 
8115e32d5dSMike Smith static d_open_t		acpiopen;
8215e32d5dSMike Smith static d_close_t	acpiclose;
8315e32d5dSMike Smith static d_ioctl_t	acpiioctl;
8415e32d5dSMike Smith 
8515e32d5dSMike Smith static struct cdevsw acpi_cdevsw = {
86dc08ffecSPoul-Henning Kamp 	.d_version =	D_VERSION,
877ac40f5fSPoul-Henning Kamp 	.d_open =	acpiopen,
887ac40f5fSPoul-Henning Kamp 	.d_close =	acpiclose,
897ac40f5fSPoul-Henning Kamp 	.d_ioctl =	acpiioctl,
907ac40f5fSPoul-Henning Kamp 	.d_name =	"acpi",
9115e32d5dSMike Smith };
9215e32d5dSMike Smith 
93346eda4fSNate Lawson /* Global mutex for locking access to the ACPI subsystem. */
94cb9b0d80SMike Smith struct mtx	acpi_mutex;
95cb9b0d80SMike Smith 
9689fb5af8SNate Lawson /* Bitmap of device quirks. */
9789fb5af8SNate Lawson int		acpi_quirks;
9889fb5af8SNate Lawson 
99a0e73a12SJung-uk Kim /* Supported sleep states. */
100a0e73a12SJung-uk Kim static BOOLEAN	acpi_sleep_states[ACPI_S_STATE_COUNT];
101a0e73a12SJung-uk Kim 
1026d63101aSMike Smith static int	acpi_modevent(struct module *mod, int event, void *junk);
10315e32d5dSMike Smith static int	acpi_probe(device_t dev);
10415e32d5dSMike Smith static int	acpi_attach(device_t dev);
10510ce62b9SNate Lawson static int	acpi_suspend(device_t dev);
10610ce62b9SNate Lawson static int	acpi_resume(device_t dev);
107169b539aSNate Lawson static int	acpi_shutdown(device_t dev);
108be2b1797SNate Lawson static device_t	acpi_add_child(device_t bus, int order, const char *name,
109be2b1797SNate Lawson 			int unit);
11015e32d5dSMike Smith static int	acpi_print_child(device_t bus, device_t child);
11110ce62b9SNate Lawson static void	acpi_probe_nomatch(device_t bus, device_t child);
11210ce62b9SNate Lawson static void	acpi_driver_added(device_t dev, driver_t *driver);
113be2b1797SNate Lawson static int	acpi_read_ivar(device_t dev, device_t child, int index,
114be2b1797SNate Lawson 			uintptr_t *result);
115be2b1797SNate Lawson static int	acpi_write_ivar(device_t dev, device_t child, int index,
116be2b1797SNate Lawson 			uintptr_t value);
11791233413SNate Lawson static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
118adad4744SNate Lawson static int	acpi_sysres_alloc(device_t dev);
119be2b1797SNate Lawson static struct resource *acpi_alloc_resource(device_t bus, device_t child,
120be2b1797SNate Lawson 			int type, int *rid, u_long start, u_long end,
121be2b1797SNate Lawson 			u_long count, u_int flags);
122be2b1797SNate Lawson static int	acpi_release_resource(device_t bus, device_t child, int type,
123be2b1797SNate Lawson 			int rid, struct resource *r);
1248b28b622SNate Lawson static void	acpi_delete_resource(device_t bus, device_t child, int type,
1258b28b622SNate Lawson 		    int rid);
1261e4925e8SNate Lawson static uint32_t	acpi_isa_get_logicalid(device_t dev);
1271e4925e8SNate Lawson static int	acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
128ce619b2eSNate Lawson static char	*acpi_device_id_probe(device_t bus, device_t dev, char **ids);
129ce619b2eSNate Lawson static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
130ce619b2eSNate Lawson 		    ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
131ce619b2eSNate Lawson 		    ACPI_BUFFER *ret);
132df8d2a32SNate Lawson static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
133df8d2a32SNate Lawson 		    void *context, void **retval);
134df8d2a32SNate Lawson static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
135df8d2a32SNate Lawson 		    int max_depth, acpi_scan_cb_t user_fn, void *arg);
13610ce62b9SNate Lawson static int	acpi_set_powerstate_method(device_t bus, device_t child,
13710ce62b9SNate Lawson 		    int state);
138be2b1797SNate Lawson static int	acpi_isa_pnp_probe(device_t bus, device_t child,
139be2b1797SNate Lawson 		    struct isa_pnp_id *ids);
14015e32d5dSMike Smith static void	acpi_probe_children(device_t bus);
141d227204dSJohn Baldwin static void	acpi_probe_order(ACPI_HANDLE handle, int *order);
142be2b1797SNate Lawson static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
143be2b1797SNate Lawson 		    void *context, void **status);
144a0e73a12SJung-uk Kim static void	acpi_sleep_enable(void *arg);
145a0e73a12SJung-uk Kim static ACPI_STATUS acpi_sleep_disable(struct acpi_softc *sc);
14600a30448SNate Lawson static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
14715e32d5dSMike Smith static void	acpi_shutdown_final(void *arg, int howto);
14813d4f7baSMitsuru IWASAKI static void	acpi_enable_fixed_events(struct acpi_softc *sc);
149d4b9ff91SNate Lawson static int	acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
150d4b9ff91SNate Lawson static int	acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
151d4b9ff91SNate Lawson static int	acpi_wake_prep_walk(int sstate);
15288a79fc0SNate Lawson static int	acpi_wake_sysctl_walk(device_t dev);
15388a79fc0SNate Lawson static int	acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
15415e32d5dSMike Smith static void	acpi_system_eventhandler_sleep(void *arg, int state);
15515e32d5dSMike Smith static void	acpi_system_eventhandler_wakeup(void *arg, int state);
156a0e73a12SJung-uk Kim static int	acpi_sname2sstate(const char *sname);
157a0e73a12SJung-uk Kim static const char *acpi_sstate2sname(int sstate);
158d75de536SMitsuru IWASAKI static int	acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
1591d073b1dSJohn Baldwin static int	acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
1602a18c71dSJung-uk Kim static int	acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS);
161f9390180SMitsuru IWASAKI static int	acpi_pm_func(u_long cmd, void *arg, ...);
162879d6c23STakanori Watanabe static int	acpi_child_location_str_method(device_t acdev, device_t child,
163879d6c23STakanori Watanabe 					       char *buf, size_t buflen);
164879d6c23STakanori Watanabe static int	acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
165879d6c23STakanori Watanabe 					      char *buf, size_t buflen);
166d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
167d320e05cSJohn Baldwin static void	acpi_enable_pcie(void);
168d320e05cSJohn Baldwin #endif
1690d484d24SJohn Baldwin static void	acpi_hint_device_unit(device_t acdev, device_t child,
1700d484d24SJohn Baldwin 		    const char *name, int *unitp);
171879d6c23STakanori Watanabe 
17215e32d5dSMike Smith static device_method_t acpi_methods[] = {
17315e32d5dSMike Smith     /* Device interface */
17415e32d5dSMike Smith     DEVMETHOD(device_probe,		acpi_probe),
17515e32d5dSMike Smith     DEVMETHOD(device_attach,		acpi_attach),
176169b539aSNate Lawson     DEVMETHOD(device_shutdown,		acpi_shutdown),
17756a70eadSNate Lawson     DEVMETHOD(device_detach,		bus_generic_detach),
17810ce62b9SNate Lawson     DEVMETHOD(device_suspend,		acpi_suspend),
17910ce62b9SNate Lawson     DEVMETHOD(device_resume,		acpi_resume),
18015e32d5dSMike Smith 
18115e32d5dSMike Smith     /* Bus interface */
18215e32d5dSMike Smith     DEVMETHOD(bus_add_child,		acpi_add_child),
18315e32d5dSMike Smith     DEVMETHOD(bus_print_child,		acpi_print_child),
18410ce62b9SNate Lawson     DEVMETHOD(bus_probe_nomatch,	acpi_probe_nomatch),
18510ce62b9SNate Lawson     DEVMETHOD(bus_driver_added,		acpi_driver_added),
18615e32d5dSMike Smith     DEVMETHOD(bus_read_ivar,		acpi_read_ivar),
18715e32d5dSMike Smith     DEVMETHOD(bus_write_ivar,		acpi_write_ivar),
18891233413SNate Lawson     DEVMETHOD(bus_get_resource_list,	acpi_get_rlist),
18991233413SNate Lawson     DEVMETHOD(bus_set_resource,		bus_generic_rl_set_resource),
19091233413SNate Lawson     DEVMETHOD(bus_get_resource,		bus_generic_rl_get_resource),
19115e32d5dSMike Smith     DEVMETHOD(bus_alloc_resource,	acpi_alloc_resource),
19215e32d5dSMike Smith     DEVMETHOD(bus_release_resource,	acpi_release_resource),
1938b28b622SNate Lawson     DEVMETHOD(bus_delete_resource,	acpi_delete_resource),
194879d6c23STakanori Watanabe     DEVMETHOD(bus_child_pnpinfo_str,	acpi_child_pnpinfo_str_method),
195879d6c23STakanori Watanabe     DEVMETHOD(bus_child_location_str,	acpi_child_location_str_method),
19615e32d5dSMike Smith     DEVMETHOD(bus_activate_resource,	bus_generic_activate_resource),
19715e32d5dSMike Smith     DEVMETHOD(bus_deactivate_resource,	bus_generic_deactivate_resource),
19815e32d5dSMike Smith     DEVMETHOD(bus_setup_intr,		bus_generic_setup_intr),
19915e32d5dSMike Smith     DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),
2000d484d24SJohn Baldwin     DEVMETHOD(bus_hint_device_unit,	acpi_hint_device_unit),
20115e32d5dSMike Smith 
202ce619b2eSNate Lawson     /* ACPI bus */
203ce619b2eSNate Lawson     DEVMETHOD(acpi_id_probe,		acpi_device_id_probe),
204ce619b2eSNate Lawson     DEVMETHOD(acpi_evaluate_object,	acpi_device_eval_obj),
20510ce62b9SNate Lawson     DEVMETHOD(acpi_pwr_for_sleep,	acpi_device_pwr_for_sleep),
206df8d2a32SNate Lawson     DEVMETHOD(acpi_scan_children,	acpi_device_scan_children),
207ce619b2eSNate Lawson 
20810ce62b9SNate Lawson     /* PCI emulation */
20910ce62b9SNate Lawson     DEVMETHOD(pci_set_powerstate,	acpi_set_powerstate_method),
21010ce62b9SNate Lawson 
211bc0f2195SMike Smith     /* ISA emulation */
212bc0f2195SMike Smith     DEVMETHOD(isa_pnp_probe,		acpi_isa_pnp_probe),
213bc0f2195SMike Smith 
21415e32d5dSMike Smith     {0, 0}
21515e32d5dSMike Smith };
21615e32d5dSMike Smith 
21715e32d5dSMike Smith static driver_t acpi_driver = {
21815e32d5dSMike Smith     "acpi",
21915e32d5dSMike Smith     acpi_methods,
22015e32d5dSMike Smith     sizeof(struct acpi_softc),
22115e32d5dSMike Smith };
22215e32d5dSMike Smith 
2233273b005SMike Smith static devclass_t acpi_devclass;
2246d63101aSMike Smith DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
225a4ecd543SNate Lawson MODULE_VERSION(acpi, 1);
22615e32d5dSMike Smith 
22715e2f34fSNate Lawson ACPI_SERIAL_DECL(acpi, "ACPI root bus");
22815e2f34fSNate Lawson 
229adad4744SNate Lawson /* Local pools for managing system resources for ACPI child devices. */
230adad4744SNate Lawson static struct rman acpi_rman_io, acpi_rman_mem;
231adad4744SNate Lawson 
232bee4aa4aSNate Lawson #define ACPI_MINIMUM_AWAKETIME	5
233bee4aa4aSNate Lawson 
2345217af30SJohn Baldwin /* Holds the description of the acpi0 device. */
2355217af30SJohn Baldwin static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
2365217af30SJohn Baldwin 
237197b4dccSNate Lawson SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
2381d7b121cSNate Lawson static char acpi_ca_version[12];
2391d7b121cSNate Lawson SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
2401d7b121cSNate Lawson 	      acpi_ca_version, 0, "Version of Intel ACPI-CA");
24115e32d5dSMike Smith 
24215e32d5dSMike Smith /*
243413081d7SNate Lawson  * Allow override of whether methods execute in parallel or not.
244c9b8d77dSNate Lawson  * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
245c9b8d77dSNate Lawson  * errors for AML that really can't handle parallel method execution.
246c9b8d77dSNate Lawson  * It is off by default since this breaks recursive methods and
247c9b8d77dSNate Lawson  * some IBMs use such code.
248413081d7SNate Lawson  */
249c9b8d77dSNate Lawson static int acpi_serialize_methods;
250413081d7SNate Lawson TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods);
251413081d7SNate Lawson 
2522a18c71dSJung-uk Kim /* Allow users to dump Debug objects without ACPI debugger. */
2532a18c71dSJung-uk Kim static int acpi_debug_objects;
2542a18c71dSJung-uk Kim TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects);
2552a18c71dSJung-uk Kim SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects,
2562a18c71dSJung-uk Kim     CTLFLAG_RW | CTLTYPE_INT, NULL, 0, acpi_debug_objects_sysctl, "I",
2572a18c71dSJung-uk Kim     "Enable Debug objects");
2582a18c71dSJung-uk Kim 
2592a18c71dSJung-uk Kim /* Allow the interpreter to ignore common mistakes in BIOS. */
2602a18c71dSJung-uk Kim static int acpi_interpreter_slack = 1;
2612a18c71dSJung-uk Kim TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack);
2622a18c71dSJung-uk Kim SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RDTUN,
2632a18c71dSJung-uk Kim     &acpi_interpreter_slack, 1, "Turn on interpreter slack mode.");
2642a18c71dSJung-uk Kim 
26510ce62b9SNate Lawson /* Power devices off and on in suspend and resume.  XXX Remove once tested. */
26610ce62b9SNate Lawson static int acpi_do_powerstate = 1;
26710ce62b9SNate Lawson TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate);
26810ce62b9SNate Lawson SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW,
26910ce62b9SNate Lawson     &acpi_do_powerstate, 1, "Turn off devices when suspending.");
27010ce62b9SNate Lawson 
2710755473bSJung-uk Kim /* Reset system clock while resuming.  XXX Remove once tested. */
2720755473bSJung-uk Kim static int acpi_reset_clock = 1;
2730755473bSJung-uk Kim TUNABLE_INT("debug.acpi.reset_clock", &acpi_reset_clock);
2740755473bSJung-uk Kim SYSCTL_INT(_debug_acpi, OID_AUTO, reset_clock, CTLFLAG_RW,
2750755473bSJung-uk Kim     &acpi_reset_clock, 1, "Reset system clock while resuming.");
2760755473bSJung-uk Kim 
27739da3eb3SNate Lawson /* Allow users to override quirks. */
27839da3eb3SNate Lawson TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
27939da3eb3SNate Lawson 
28093bfd059SNate Lawson static int acpi_susp_bounce;
28193bfd059SNate Lawson SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
28293bfd059SNate Lawson     &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
28393bfd059SNate Lawson 
284c9b8d77dSNate Lawson /*
2856d63101aSMike Smith  * ACPI can only be loaded as a module by the loader; activating it after
2866d63101aSMike Smith  * system bootstrap time is not useful, and can be fatal to the system.
2878c0879b6SJohn Baldwin  * It also cannot be unloaded, since the entire system bus hierarchy hangs
288be2b1797SNate Lawson  * off it.
2896d63101aSMike Smith  */
2906d63101aSMike Smith static int
2916d63101aSMike Smith acpi_modevent(struct module *mod, int event, void *junk)
2926d63101aSMike Smith {
2936d63101aSMike Smith     switch (event) {
2946d63101aSMike Smith     case MOD_LOAD:
29587b45ed5SMitsuru IWASAKI 	if (!cold) {
29687b45ed5SMitsuru IWASAKI 	    printf("The ACPI driver cannot be loaded after boot.\n");
2976d63101aSMike Smith 	    return (EPERM);
29887b45ed5SMitsuru IWASAKI 	}
2996d63101aSMike Smith 	break;
3006d63101aSMike Smith     case MOD_UNLOAD:
301f9390180SMitsuru IWASAKI 	if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
3026d63101aSMike Smith 	    return (EBUSY);
303f9390180SMitsuru IWASAKI 	break;
3046d63101aSMike Smith     default:
3056d63101aSMike Smith 	break;
3066d63101aSMike Smith     }
3076d63101aSMike Smith     return (0);
3086d63101aSMike Smith }
3096d63101aSMike Smith 
3106d63101aSMike Smith /*
311bbc2815cSJohn Baldwin  * Perform early initialization.
31215e32d5dSMike Smith  */
313bbc2815cSJohn Baldwin ACPI_STATUS
314bbc2815cSJohn Baldwin acpi_Startup(void)
31515e32d5dSMike Smith {
31689fb5af8SNate Lawson     static int started = 0;
3172be4e471SJung-uk Kim     ACPI_STATUS status;
3182be4e471SJung-uk Kim     int val;
31915e32d5dSMike Smith 
3201b8c233dSPeter Pentchev     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3211b8c233dSPeter Pentchev 
322bee4aa4aSNate Lawson     /* Only run the startup code once.  The MADT driver also calls this. */
323bbc2815cSJohn Baldwin     if (started)
3242be4e471SJung-uk Kim 	return_VALUE (AE_OK);
325bbc2815cSJohn Baldwin     started = 1;
32615e32d5dSMike Smith 
327413081d7SNate Lawson     /*
3282be4e471SJung-uk Kim      * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
3292be4e471SJung-uk Kim      * if more tables exist.
330413081d7SNate Lawson      */
3312be4e471SJung-uk Kim     if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
3322be4e471SJung-uk Kim 	printf("ACPI: Table initialisation failed: %s\n",
3332be4e471SJung-uk Kim 	    AcpiFormatException(status));
3342be4e471SJung-uk Kim 	return_VALUE (status);
33515e32d5dSMike Smith     }
3363184cf5aSNate Lawson 
33789fb5af8SNate Lawson     /* Set up any quirks we have for this system. */
3382be4e471SJung-uk Kim     if (acpi_quirks == ACPI_Q_OK)
33989fb5af8SNate Lawson 	acpi_table_quirks(&acpi_quirks);
34089fb5af8SNate Lawson 
34139da3eb3SNate Lawson     /* If the user manually set the disabled hint to 0, force-enable ACPI. */
34289fb5af8SNate Lawson     if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
34389fb5af8SNate Lawson 	acpi_quirks &= ~ACPI_Q_BROKEN;
34489fb5af8SNate Lawson     if (acpi_quirks & ACPI_Q_BROKEN) {
34589fb5af8SNate Lawson 	printf("ACPI disabled by blacklist.  Contact your BIOS vendor.\n");
3462be4e471SJung-uk Kim 	status = AE_SUPPORT;
34789fb5af8SNate Lawson     }
3483184cf5aSNate Lawson 
3492be4e471SJung-uk Kim     return_VALUE (status);
350bbc2815cSJohn Baldwin }
351bbc2815cSJohn Baldwin 
352bbc2815cSJohn Baldwin /*
3535217af30SJohn Baldwin  * Detect ACPI and perform early initialisation.
354bbc2815cSJohn Baldwin  */
3555217af30SJohn Baldwin int
3565217af30SJohn Baldwin acpi_identify(void)
357bbc2815cSJohn Baldwin {
3585217af30SJohn Baldwin     ACPI_TABLE_RSDP	*rsdp;
3595217af30SJohn Baldwin     ACPI_TABLE_HEADER	*rsdt;
3605217af30SJohn Baldwin     ACPI_PHYSICAL_ADDRESS paddr;
3615217af30SJohn Baldwin     struct sbuf		sb;
362bbc2815cSJohn Baldwin 
363bbc2815cSJohn Baldwin     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
364bbc2815cSJohn Baldwin 
365bbc2815cSJohn Baldwin     if (!cold)
3665217af30SJohn Baldwin 	return (ENXIO);
367bbc2815cSJohn Baldwin 
368bbc2815cSJohn Baldwin     /* Check that we haven't been disabled with a hint. */
369bbc2815cSJohn Baldwin     if (resource_disabled("acpi", 0))
3705217af30SJohn Baldwin 	return (ENXIO);
371bbc2815cSJohn Baldwin 
3725217af30SJohn Baldwin     /* Check for other PM systems. */
3735217af30SJohn Baldwin     if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
3745217af30SJohn Baldwin 	power_pm_get_type() != POWER_PM_TYPE_ACPI) {
3755217af30SJohn Baldwin 	printf("ACPI identify failed, other PM system enabled.\n");
3765217af30SJohn Baldwin 	return (ENXIO);
3775217af30SJohn Baldwin     }
3784b1ff978SMark Santcroos 
3792be4e471SJung-uk Kim     /* Initialize root tables. */
3802be4e471SJung-uk Kim     if (ACPI_FAILURE(acpi_Startup())) {
3812be4e471SJung-uk Kim 	printf("ACPI: Try disabling either ACPI or apic support.\n");
3825217af30SJohn Baldwin 	return (ENXIO);
3832be4e471SJung-uk Kim     }
38415e32d5dSMike Smith 
3855217af30SJohn Baldwin     if ((paddr = AcpiOsGetRootPointer()) == 0 ||
3865217af30SJohn Baldwin 	(rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
3875217af30SJohn Baldwin 	return (ENXIO);
3885217af30SJohn Baldwin     if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
3895217af30SJohn Baldwin 	paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
3905217af30SJohn Baldwin     else
3915217af30SJohn Baldwin 	paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
3925217af30SJohn Baldwin     AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
3935217af30SJohn Baldwin 
3945217af30SJohn Baldwin     if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
3955217af30SJohn Baldwin 	return (ENXIO);
3965217af30SJohn Baldwin     sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN);
3975217af30SJohn Baldwin     sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
3985217af30SJohn Baldwin     sbuf_trim(&sb);
3995217af30SJohn Baldwin     sbuf_putc(&sb, ' ');
4005217af30SJohn Baldwin     sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
4015217af30SJohn Baldwin     sbuf_trim(&sb);
4025217af30SJohn Baldwin     sbuf_finish(&sb);
4035217af30SJohn Baldwin     sbuf_delete(&sb);
4045217af30SJohn Baldwin     AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
4055217af30SJohn Baldwin 
4065217af30SJohn Baldwin     snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
4075217af30SJohn Baldwin 
4085217af30SJohn Baldwin     return (0);
40915e32d5dSMike Smith }
41015e32d5dSMike Smith 
41115e32d5dSMike Smith /*
412bee4aa4aSNate Lawson  * Fetch some descriptive data from ACPI to put in our attach message.
41315e32d5dSMike Smith  */
41415e32d5dSMike Smith static int
41515e32d5dSMike Smith acpi_probe(device_t dev)
41615e32d5dSMike Smith {
41715e32d5dSMike Smith 
418b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
419f9390180SMitsuru IWASAKI 
4205217af30SJohn Baldwin     device_set_desc(dev, acpi_desc);
421bee4aa4aSNate Lawson 
4222be4e471SJung-uk Kim     return_VALUE (0);
42315e32d5dSMike Smith }
42415e32d5dSMike Smith 
42515e32d5dSMike Smith static int
42615e32d5dSMike Smith acpi_attach(device_t dev)
42715e32d5dSMike Smith {
42815e32d5dSMike Smith     struct acpi_softc	*sc;
429cb9b0d80SMike Smith     ACPI_STATUS		status;
430ea27c63eSNate Lawson     int			error, state;
43132d18aa5SMike Smith     UINT32		flags;
432ea27c63eSNate Lawson     UINT8		TypeA, TypeB;
433498d464fSMitsuru IWASAKI     char		*env;
43415e32d5dSMike Smith 
435b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
436bee4aa4aSNate Lawson 
43715e32d5dSMike Smith     sc = device_get_softc(dev);
43815e32d5dSMike Smith     sc->acpi_dev = dev;
43900a30448SNate Lawson     callout_init(&sc->susp_force_to, TRUE);
44015e32d5dSMike Smith 
4412be4e471SJung-uk Kim     error = ENXIO;
4422be4e471SJung-uk Kim 
44391233413SNate Lawson     /* Initialize resource manager. */
44491233413SNate Lawson     acpi_rman_io.rm_type = RMAN_ARRAY;
44591233413SNate Lawson     acpi_rman_io.rm_start = 0;
44691233413SNate Lawson     acpi_rman_io.rm_end = 0xffff;
4470bba6acfSJohn Baldwin     acpi_rman_io.rm_descr = "ACPI I/O ports";
44891233413SNate Lawson     if (rman_init(&acpi_rman_io) != 0)
44991233413SNate Lawson 	panic("acpi rman_init IO ports failed");
45091233413SNate Lawson     acpi_rman_mem.rm_type = RMAN_ARRAY;
45191233413SNate Lawson     acpi_rman_mem.rm_start = 0;
45291233413SNate Lawson     acpi_rman_mem.rm_end = ~0ul;
4530bba6acfSJohn Baldwin     acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
45491233413SNate Lawson     if (rman_init(&acpi_rman_mem) != 0)
45591233413SNate Lawson 	panic("acpi rman_init memory failed");
45691233413SNate Lawson 
4572be4e471SJung-uk Kim     /* Initialise the ACPI mutex */
4582be4e471SJung-uk Kim     mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
4592be4e471SJung-uk Kim 
4602be4e471SJung-uk Kim     /*
4612be4e471SJung-uk Kim      * Set the globals from our tunables.  This is needed because ACPI-CA
4622be4e471SJung-uk Kim      * uses UINT8 for some values and we have no tunable_byte.
4632be4e471SJung-uk Kim      */
4642a18c71dSJung-uk Kim     AcpiGbl_AllMethodsSerialized = acpi_serialize_methods ? TRUE : FALSE;
4652a18c71dSJung-uk Kim     AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE;
4662a18c71dSJung-uk Kim     AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
4672a18c71dSJung-uk Kim 
4682a18c71dSJung-uk Kim #ifndef ACPI_DEBUG
4692a18c71dSJung-uk Kim     /*
4702a18c71dSJung-uk Kim      * Disable all debugging layers and levels.
4712a18c71dSJung-uk Kim      */
4722a18c71dSJung-uk Kim     AcpiDbgLayer = 0;
4732a18c71dSJung-uk Kim     AcpiDbgLevel = 0;
4742a18c71dSJung-uk Kim #endif
4752be4e471SJung-uk Kim 
4762be4e471SJung-uk Kim     /* Start up the ACPI CA subsystem. */
4772be4e471SJung-uk Kim     status = AcpiInitializeSubsystem();
4782be4e471SJung-uk Kim     if (ACPI_FAILURE(status)) {
4792be4e471SJung-uk Kim 	device_printf(dev, "Could not initialize Subsystem: %s\n",
4802be4e471SJung-uk Kim 		      AcpiFormatException(status));
4812be4e471SJung-uk Kim 	goto out;
4822be4e471SJung-uk Kim     }
4832be4e471SJung-uk Kim 
4842be4e471SJung-uk Kim     /* Load ACPI name space. */
4852be4e471SJung-uk Kim     status = AcpiLoadTables();
4862be4e471SJung-uk Kim     if (ACPI_FAILURE(status)) {
4872be4e471SJung-uk Kim 	device_printf(dev, "Could not load Namespace: %s\n",
4882be4e471SJung-uk Kim 		      AcpiFormatException(status));
4892be4e471SJung-uk Kim 	goto out;
4902be4e471SJung-uk Kim     }
4912be4e471SJung-uk Kim 
492d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
493d320e05cSJohn Baldwin     /* Handle MCFG table if present. */
494d320e05cSJohn Baldwin     acpi_enable_pcie();
495d320e05cSJohn Baldwin #endif
496d320e05cSJohn Baldwin 
497be2b1797SNate Lawson     /* Install the default address space handlers. */
498be2b1797SNate Lawson     status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
499be2b1797SNate Lawson 		ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
500be2b1797SNate Lawson     if (ACPI_FAILURE(status)) {
501be2b1797SNate Lawson 	device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
502be2b1797SNate Lawson 		      AcpiFormatException(status));
503cb9b0d80SMike Smith 	goto out;
50415e32d5dSMike Smith     }
505be2b1797SNate Lawson     status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
506be2b1797SNate Lawson 		ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
507be2b1797SNate Lawson     if (ACPI_FAILURE(status)) {
508be2b1797SNate Lawson 	device_printf(dev, "Could not initialise SystemIO handler: %s\n",
509be2b1797SNate Lawson 		      AcpiFormatException(status));
510cb9b0d80SMike Smith 	goto out;
51115e32d5dSMike Smith     }
512be2b1797SNate Lawson     status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
513be2b1797SNate Lawson 		ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
514be2b1797SNate Lawson     if (ACPI_FAILURE(status)) {
515be2b1797SNate Lawson 	device_printf(dev, "could not initialise PciConfig handler: %s\n",
516be2b1797SNate Lawson 		      AcpiFormatException(status));
517cb9b0d80SMike Smith 	goto out;
51815e32d5dSMike Smith     }
51915e32d5dSMike Smith 
52015e32d5dSMike Smith     /*
521be2b1797SNate Lawson      * Note that some systems (specifically, those with namespace evaluation
522be2b1797SNate Lawson      * issues that require the avoidance of parts of the namespace) must
523be2b1797SNate Lawson      * avoid running _INI and _STA on everything, as well as dodging the final
524be2b1797SNate Lawson      * object init pass.
52515e32d5dSMike Smith      *
52632d18aa5SMike Smith      * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
52732d18aa5SMike Smith      *
528be2b1797SNate Lawson      * XXX We should arrange for the object init pass after we have attached
529be2b1797SNate Lawson      *     all our child devices, but on many systems it works here.
53015e32d5dSMike Smith      */
53132d18aa5SMike Smith     flags = 0;
532d786139cSMaxime Henrion     if (testenv("debug.acpi.avoid"))
53332d18aa5SMike Smith 	flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
534bee4aa4aSNate Lawson 
535bee4aa4aSNate Lawson     /* Bring the hardware and basic handlers online. */
536b53f2771SMike Smith     if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
537be2b1797SNate Lawson 	device_printf(dev, "Could not enable ACPI: %s\n",
538be2b1797SNate Lawson 		      AcpiFormatException(status));
539cb9b0d80SMike Smith 	goto out;
54015e32d5dSMike Smith     }
54115e32d5dSMike Smith 
542f8335e3aSNate Lawson     /*
543f8335e3aSNate Lawson      * Call the ECDT probe function to provide EC functionality before
544f8335e3aSNate Lawson      * the namespace has been evaluated.
545da72d149SNate Lawson      *
546da72d149SNate Lawson      * XXX This happens before the sysresource devices have been probed and
547da72d149SNate Lawson      * attached so its resources come from nexus0.  In practice, this isn't
548da72d149SNate Lawson      * a problem but should be addressed eventually.
549f8335e3aSNate Lawson      */
550f8335e3aSNate Lawson     acpi_ec_ecdt_probe(dev);
551f8335e3aSNate Lawson 
552bee4aa4aSNate Lawson     /* Bring device objects and regions online. */
553b69ed3f4SMitsuru IWASAKI     if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
554be2b1797SNate Lawson 	device_printf(dev, "Could not initialize ACPI objects: %s\n",
555be2b1797SNate Lawson 		      AcpiFormatException(status));
556b69ed3f4SMitsuru IWASAKI 	goto out;
557b69ed3f4SMitsuru IWASAKI     }
558b69ed3f4SMitsuru IWASAKI 
55915e32d5dSMike Smith     /*
5601d073b1dSJohn Baldwin      * Setup our sysctl tree.
5611d073b1dSJohn Baldwin      *
5621d073b1dSJohn Baldwin      * XXX: This doesn't check to make sure that none of these fail.
5631d073b1dSJohn Baldwin      */
5641d073b1dSJohn Baldwin     sysctl_ctx_init(&sc->acpi_sysctl_ctx);
5651d073b1dSJohn Baldwin     sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
5661d073b1dSJohn Baldwin 			       SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
5671d073b1dSJohn Baldwin 			       device_get_name(dev), CTLFLAG_RD, 0, "");
5681d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
569d75de536SMitsuru IWASAKI 	OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
570d75de536SMitsuru IWASAKI 	0, 0, acpi_supported_sleep_state_sysctl, "A", "");
571d75de536SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5721d073b1dSJohn Baldwin 	OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
5731d073b1dSJohn Baldwin 	&sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
5741d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5751d073b1dSJohn Baldwin 	OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
5761d073b1dSJohn Baldwin 	&sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
5771d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5781d073b1dSJohn Baldwin 	OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
5791d073b1dSJohn Baldwin 	&sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
580f86214b6SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
581f86214b6SMitsuru IWASAKI 	OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
582f86214b6SMitsuru IWASAKI 	&sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
583f86214b6SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
584f86214b6SMitsuru IWASAKI 	OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
585f86214b6SMitsuru IWASAKI 	&sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
5862d644607SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
587197b4dccSNate Lawson 	OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
588197b4dccSNate Lawson 	"sleep delay");
589ff01efb5SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
590197b4dccSNate Lawson 	OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
5911611ea87SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
592197b4dccSNate Lawson 	OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
593d85e6785SNate Lawson     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
594d85e6785SNate Lawson 	OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
595d85e6785SNate Lawson 	&sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
596d1b16e18SNate Lawson     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
597d1b16e18SNate Lawson 	OID_AUTO, "handle_reboot", CTLFLAG_RW,
598d1b16e18SNate Lawson 	&sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
599bf0c18ecSNate Lawson 
600bf0c18ecSNate Lawson     /*
6012b9609abSNate Lawson      * Default to 1 second before sleeping to give some machines time to
602bf0c18ecSNate Lawson      * stabilize.
603bf0c18ecSNate Lawson      */
6042b9609abSNate Lawson     sc->acpi_sleep_delay = 1;
6052d644607SMitsuru IWASAKI     if (bootverbose)
6062d644607SMitsuru IWASAKI 	sc->acpi_verbose = 1;
607965a34fbSNate Lawson     if ((env = getenv("hw.acpi.verbose")) != NULL) {
608965a34fbSNate Lawson 	if (strcmp(env, "0") != 0)
609498d464fSMitsuru IWASAKI 	    sc->acpi_verbose = 1;
610498d464fSMitsuru IWASAKI 	freeenv(env);
611498d464fSMitsuru IWASAKI     }
6121d073b1dSJohn Baldwin 
6132d610c46SNate Lawson     /* Only enable S4BIOS by default if the FACS says it is available. */
614129d3046SJung-uk Kim     if (AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
6152d610c46SNate Lawson 	sc->acpi_s4bios = 1;
6162d610c46SNate Lawson 
617a0e73a12SJung-uk Kim     /* Probe all supported sleep states. */
618a0e73a12SJung-uk Kim     acpi_sleep_states[ACPI_STATE_S0] = TRUE;
619a0e73a12SJung-uk Kim     for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
620a0e73a12SJung-uk Kim 	if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
621a0e73a12SJung-uk Kim 	    acpi_sleep_states[state] = TRUE;
622a0e73a12SJung-uk Kim 
6231d073b1dSJohn Baldwin     /*
624ea27c63eSNate Lawson      * Dispatch the default sleep state to devices.  The lid switch is set
625a0e73a12SJung-uk Kim      * to UNKNOWN by default to avoid surprising users.
62615e32d5dSMike Smith      */
627a0e73a12SJung-uk Kim     sc->acpi_power_button_sx = acpi_sleep_states[ACPI_STATE_S5] ?
628a0e73a12SJung-uk Kim 	ACPI_STATE_S5 : ACPI_STATE_UNKNOWN;
629a0e73a12SJung-uk Kim     sc->acpi_lid_switch_sx = ACPI_STATE_UNKNOWN;
630a0e73a12SJung-uk Kim     sc->acpi_standby_sx = acpi_sleep_states[ACPI_STATE_S1] ?
631a0e73a12SJung-uk Kim 	ACPI_STATE_S1 : ACPI_STATE_UNKNOWN;
632a0e73a12SJung-uk Kim     sc->acpi_suspend_sx = acpi_sleep_states[ACPI_STATE_S3] ?
633a0e73a12SJung-uk Kim 	ACPI_STATE_S3 : ACPI_STATE_UNKNOWN;
63415e32d5dSMike Smith 
635ea27c63eSNate Lawson     /* Pick the first valid sleep state for the sleep button default. */
636a0e73a12SJung-uk Kim     sc->acpi_sleep_button_sx = ACPI_STATE_UNKNOWN;
63700a30448SNate Lawson     for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
638a0e73a12SJung-uk Kim 	if (acpi_sleep_states[state]) {
639ea27c63eSNate Lawson 	    sc->acpi_sleep_button_sx = state;
640ea27c63eSNate Lawson 	    break;
641ea27c63eSNate Lawson 	}
642ea27c63eSNate Lawson 
64313d4f7baSMitsuru IWASAKI     acpi_enable_fixed_events(sc);
64415e32d5dSMike Smith 
64515e32d5dSMike Smith     /*
64615e32d5dSMike Smith      * Scan the namespace and attach/initialise children.
64715e32d5dSMike Smith      */
64815e32d5dSMike Smith 
64959e472e9SNate Lawson     /* Register our shutdown handler. */
650be2b1797SNate Lawson     EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
651be2b1797SNate Lawson 	SHUTDOWN_PRI_LAST);
65215e32d5dSMike Smith 
65315e32d5dSMike Smith     /*
65415e32d5dSMike Smith      * Register our acpi event handlers.
65515e32d5dSMike Smith      * XXX should be configurable eg. via userland policy manager.
65615e32d5dSMike Smith      */
657be2b1797SNate Lawson     EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
658be2b1797SNate Lawson 	sc, ACPI_EVENT_PRI_LAST);
659be2b1797SNate Lawson     EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
660be2b1797SNate Lawson 	sc, ACPI_EVENT_PRI_LAST);
66115e32d5dSMike Smith 
662be2b1797SNate Lawson     /* Flag our initial states. */
663a0e73a12SJung-uk Kim     sc->acpi_enabled = TRUE;
66415e32d5dSMike Smith     sc->acpi_sstate = ACPI_STATE_S0;
665a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = TRUE;
66615e32d5dSMike Smith 
667be2b1797SNate Lawson     /* Create the control device */
668a89fcf28STakanori Watanabe     sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
6692a4689e8SRobert Watson 			      "acpi");
67015e32d5dSMike Smith     sc->acpi_dev_t->si_drv1 = sc;
67115e32d5dSMike Smith 
672be2b1797SNate Lawson     if ((error = acpi_machdep_init(dev)))
673f86214b6SMitsuru IWASAKI 	goto out;
674f86214b6SMitsuru IWASAKI 
675f9390180SMitsuru IWASAKI     /* Register ACPI again to pass the correct argument of pm_func. */
676f9390180SMitsuru IWASAKI     power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
677f9390180SMitsuru IWASAKI 
678eeb6dba2SJohn Baldwin     if (!acpi_disabled("bus"))
679eeb6dba2SJohn Baldwin 	acpi_probe_children(dev);
680eeb6dba2SJohn Baldwin 
681a0e73a12SJung-uk Kim     /* Allow sleep request after a while. */
682a0e73a12SJung-uk Kim     timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME);
683a0e73a12SJung-uk Kim 
684cb9b0d80SMike Smith     error = 0;
685cb9b0d80SMike Smith 
686cb9b0d80SMike Smith  out:
687cb9b0d80SMike Smith     return_VALUE (error);
68815e32d5dSMike Smith }
68915e32d5dSMike Smith 
690169b539aSNate Lawson static int
69110ce62b9SNate Lawson acpi_suspend(device_t dev)
69210ce62b9SNate Lawson {
69310ce62b9SNate Lawson     device_t child, *devlist;
69410ce62b9SNate Lawson     int error, i, numdevs, pstate;
69510ce62b9SNate Lawson 
696a56fe095SJohn Baldwin     GIANT_REQUIRED;
697a56fe095SJohn Baldwin 
69810ce62b9SNate Lawson     /* First give child devices a chance to suspend. */
69910ce62b9SNate Lawson     error = bus_generic_suspend(dev);
70010ce62b9SNate Lawson     if (error)
70110ce62b9SNate Lawson 	return (error);
70210ce62b9SNate Lawson 
70310ce62b9SNate Lawson     /*
70410ce62b9SNate Lawson      * Now, set them into the appropriate power state, usually D3.  If the
70510ce62b9SNate Lawson      * device has an _SxD method for the next sleep state, use that power
70610ce62b9SNate Lawson      * state instead.
70710ce62b9SNate Lawson      */
708099ea4b5SWarner Losh     error = device_get_children(dev, &devlist, &numdevs);
709099ea4b5SWarner Losh     if (error)
710099ea4b5SWarner Losh 	return (error);
71110ce62b9SNate Lawson     for (i = 0; i < numdevs; i++) {
71210ce62b9SNate Lawson 	/* If the device is not attached, we've powered it down elsewhere. */
71310ce62b9SNate Lawson 	child = devlist[i];
71410ce62b9SNate Lawson 	if (!device_is_attached(child))
71510ce62b9SNate Lawson 	    continue;
71610ce62b9SNate Lawson 
71710ce62b9SNate Lawson 	/*
71810ce62b9SNate Lawson 	 * Default to D3 for all sleep states.  The _SxD method is optional
71910ce62b9SNate Lawson 	 * so set the powerstate even if it's absent.
72010ce62b9SNate Lawson 	 */
72110ce62b9SNate Lawson 	pstate = PCI_POWERSTATE_D3;
72210ce62b9SNate Lawson 	error = acpi_device_pwr_for_sleep(device_get_parent(child),
72310ce62b9SNate Lawson 	    child, &pstate);
72410ce62b9SNate Lawson 	if ((error == 0 || error == ESRCH) && acpi_do_powerstate)
72510ce62b9SNate Lawson 	    pci_set_powerstate(child, pstate);
72610ce62b9SNate Lawson     }
72710ce62b9SNate Lawson     free(devlist, M_TEMP);
72810ce62b9SNate Lawson     error = 0;
72910ce62b9SNate Lawson 
73010ce62b9SNate Lawson     return (error);
73110ce62b9SNate Lawson }
73210ce62b9SNate Lawson 
73310ce62b9SNate Lawson static int
73410ce62b9SNate Lawson acpi_resume(device_t dev)
73510ce62b9SNate Lawson {
73610ce62b9SNate Lawson     ACPI_HANDLE handle;
737099ea4b5SWarner Losh     int i, numdevs, error;
73810ce62b9SNate Lawson     device_t child, *devlist;
73910ce62b9SNate Lawson 
740a56fe095SJohn Baldwin     GIANT_REQUIRED;
741a56fe095SJohn Baldwin 
74210ce62b9SNate Lawson     /*
74310ce62b9SNate Lawson      * Put all devices in D0 before resuming them.  Call _S0D on each one
74410ce62b9SNate Lawson      * since some systems expect this.
74510ce62b9SNate Lawson      */
746099ea4b5SWarner Losh     error = device_get_children(dev, &devlist, &numdevs);
747099ea4b5SWarner Losh     if (error)
748099ea4b5SWarner Losh 	return (error);
74910ce62b9SNate Lawson     for (i = 0; i < numdevs; i++) {
75010ce62b9SNate Lawson 	child = devlist[i];
75110ce62b9SNate Lawson 	handle = acpi_get_handle(child);
75210ce62b9SNate Lawson 	if (handle)
75310ce62b9SNate Lawson 	    AcpiEvaluateObject(handle, "_S0D", NULL, NULL);
75410ce62b9SNate Lawson 	if (device_is_attached(child) && acpi_do_powerstate)
75510ce62b9SNate Lawson 	    pci_set_powerstate(child, PCI_POWERSTATE_D0);
75610ce62b9SNate Lawson     }
75710ce62b9SNate Lawson     free(devlist, M_TEMP);
75810ce62b9SNate Lawson 
75910ce62b9SNate Lawson     return (bus_generic_resume(dev));
76010ce62b9SNate Lawson }
76110ce62b9SNate Lawson 
76210ce62b9SNate Lawson static int
763169b539aSNate Lawson acpi_shutdown(device_t dev)
764169b539aSNate Lawson {
765169b539aSNate Lawson 
766a56fe095SJohn Baldwin     GIANT_REQUIRED;
767a56fe095SJohn Baldwin 
7680e414868SNate Lawson     /* Allow children to shutdown first. */
7690e414868SNate Lawson     bus_generic_shutdown(dev);
7700e414868SNate Lawson 
771bee4aa4aSNate Lawson     /*
772bee4aa4aSNate Lawson      * Enable any GPEs that are able to power-on the system (i.e., RTC).
773bee4aa4aSNate Lawson      * Also, disable any that are not valid for this state (most).
774bee4aa4aSNate Lawson      */
775d4b9ff91SNate Lawson     acpi_wake_prep_walk(ACPI_STATE_S5);
776d4b9ff91SNate Lawson 
777169b539aSNate Lawson     return (0);
778169b539aSNate Lawson }
779169b539aSNate Lawson 
78015e32d5dSMike Smith /*
78115e32d5dSMike Smith  * Handle a new device being added
78215e32d5dSMike Smith  */
78315e32d5dSMike Smith static device_t
78415e32d5dSMike Smith acpi_add_child(device_t bus, int order, const char *name, int unit)
78515e32d5dSMike Smith {
78615e32d5dSMike Smith     struct acpi_device	*ad;
78715e32d5dSMike Smith     device_t		child;
78815e32d5dSMike Smith 
789be2b1797SNate Lawson     if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
79015e32d5dSMike Smith 	return (NULL);
79115e32d5dSMike Smith 
79215e32d5dSMike Smith     resource_list_init(&ad->ad_rl);
79315e32d5dSMike Smith 
79415e32d5dSMike Smith     child = device_add_child_ordered(bus, order, name, unit);
79515e32d5dSMike Smith     if (child != NULL)
79615e32d5dSMike Smith 	device_set_ivars(child, ad);
79743ce1c77SNate Lawson     else
79843ce1c77SNate Lawson 	free(ad, M_ACPIDEV);
79915e32d5dSMike Smith     return (child);
80015e32d5dSMike Smith }
80115e32d5dSMike Smith 
80215e32d5dSMike Smith static int
80315e32d5dSMike Smith acpi_print_child(device_t bus, device_t child)
80415e32d5dSMike Smith {
80515e32d5dSMike Smith     struct acpi_device	 *adev = device_get_ivars(child);
80615e32d5dSMike Smith     struct resource_list *rl = &adev->ad_rl;
80715e32d5dSMike Smith     int retval = 0;
80815e32d5dSMike Smith 
80915e32d5dSMike Smith     retval += bus_print_child_header(bus, child);
8109ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "port",  SYS_RES_IOPORT, "%#lx");
8119ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
8129ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "irq",   SYS_RES_IRQ,    "%ld");
8139ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "drq",   SYS_RES_DRQ,    "%ld");
814a91c5fa8SNate Lawson     if (device_get_flags(child))
815a91c5fa8SNate Lawson 	retval += printf(" flags %#x", device_get_flags(child));
8162c8d3b23SNate Lawson     retval += bus_print_child_footer(bus, child);
81715e32d5dSMike Smith 
81815e32d5dSMike Smith     return (retval);
81915e32d5dSMike Smith }
82015e32d5dSMike Smith 
82110ce62b9SNate Lawson /*
82210ce62b9SNate Lawson  * If this device is an ACPI child but no one claimed it, attempt
82310ce62b9SNate Lawson  * to power it off.  We'll power it back up when a driver is added.
82410ce62b9SNate Lawson  *
82510ce62b9SNate Lawson  * XXX Disabled for now since many necessary devices (like fdc and
82610ce62b9SNate Lawson  * ATA) don't claim the devices we created for them but still expect
82710ce62b9SNate Lawson  * them to be powered up.
82810ce62b9SNate Lawson  */
82910ce62b9SNate Lawson static void
83010ce62b9SNate Lawson acpi_probe_nomatch(device_t bus, device_t child)
83110ce62b9SNate Lawson {
83296cf0b6dSWarner Losh #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
83396cf0b6dSWarner Losh     pci_set_powerstate(child, PCI_POWERSTATE_D3);
83496cf0b6dSWarner Losh #endif
83510ce62b9SNate Lawson }
83610ce62b9SNate Lawson 
83710ce62b9SNate Lawson /*
83810ce62b9SNate Lawson  * If a new driver has a chance to probe a child, first power it up.
83910ce62b9SNate Lawson  *
84010ce62b9SNate Lawson  * XXX Disabled for now (see acpi_probe_nomatch for details).
84110ce62b9SNate Lawson  */
84210ce62b9SNate Lawson static void
84310ce62b9SNate Lawson acpi_driver_added(device_t dev, driver_t *driver)
84410ce62b9SNate Lawson {
84510ce62b9SNate Lawson     device_t child, *devlist;
84610ce62b9SNate Lawson     int i, numdevs;
84710ce62b9SNate Lawson 
84810ce62b9SNate Lawson     DEVICE_IDENTIFY(driver, dev);
849099ea4b5SWarner Losh     if (device_get_children(dev, &devlist, &numdevs))
850099ea4b5SWarner Losh 	    return;
85110ce62b9SNate Lawson     for (i = 0; i < numdevs; i++) {
85210ce62b9SNate Lawson 	child = devlist[i];
85310ce62b9SNate Lawson 	if (device_get_state(child) == DS_NOTPRESENT) {
85496cf0b6dSWarner Losh #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
85596cf0b6dSWarner Losh 	    pci_set_powerstate(child, PCI_POWERSTATE_D0);
85610ce62b9SNate Lawson 	    if (device_probe_and_attach(child) != 0)
85796cf0b6dSWarner Losh 		pci_set_powerstate(child, PCI_POWERSTATE_D3);
85896cf0b6dSWarner Losh #else
85996cf0b6dSWarner Losh 	    device_probe_and_attach(child);
86096cf0b6dSWarner Losh #endif
86110ce62b9SNate Lawson 	}
86210ce62b9SNate Lawson     }
86310ce62b9SNate Lawson     free(devlist, M_TEMP);
86410ce62b9SNate Lawson }
86510ce62b9SNate Lawson 
86663600cc3SNate Lawson /* Location hint for devctl(8) */
86763600cc3SNate Lawson static int
868247648afSTakanori Watanabe acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
869247648afSTakanori Watanabe     size_t buflen)
870247648afSTakanori Watanabe {
871247648afSTakanori Watanabe     struct acpi_device *dinfo = device_get_ivars(child);
872247648afSTakanori Watanabe 
873247648afSTakanori Watanabe     if (dinfo->ad_handle)
874d40c0f53SNate Lawson 	snprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
875247648afSTakanori Watanabe     else
876d40c0f53SNate Lawson 	snprintf(buf, buflen, "unknown");
877247648afSTakanori Watanabe     return (0);
878247648afSTakanori Watanabe }
879247648afSTakanori Watanabe 
88063600cc3SNate Lawson /* PnP information for devctl(8) */
88163600cc3SNate Lawson static int
882247648afSTakanori Watanabe acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
883247648afSTakanori Watanabe     size_t buflen)
884247648afSTakanori Watanabe {
88563600cc3SNate Lawson     struct acpi_device *dinfo = device_get_ivars(child);
88692488a57SJung-uk Kim     ACPI_DEVICE_INFO *adinfo;
887247648afSTakanori Watanabe 
88892488a57SJung-uk Kim     if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo))) {
889d40c0f53SNate Lawson 	snprintf(buf, buflen, "unknown");
89092488a57SJung-uk Kim 	return (0);
89192488a57SJung-uk Kim     }
89292488a57SJung-uk Kim 
893247648afSTakanori Watanabe     snprintf(buf, buflen, "_HID=%s _UID=%lu",
894247648afSTakanori Watanabe 	(adinfo->Valid & ACPI_VALID_HID) ?
89592488a57SJung-uk Kim 	adinfo->HardwareId.String : "none",
89663600cc3SNate Lawson 	(adinfo->Valid & ACPI_VALID_UID) ?
89792488a57SJung-uk Kim 	strtoul(adinfo->UniqueId.String, NULL, 10) : 0UL);
898247648afSTakanori Watanabe     AcpiOsFree(adinfo);
899247648afSTakanori Watanabe 
900247648afSTakanori Watanabe     return (0);
901247648afSTakanori Watanabe }
902247648afSTakanori Watanabe 
903247648afSTakanori Watanabe /*
90415e32d5dSMike Smith  * Handle per-device ivars
90515e32d5dSMike Smith  */
90615e32d5dSMike Smith static int
90715e32d5dSMike Smith acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
90815e32d5dSMike Smith {
90915e32d5dSMike Smith     struct acpi_device	*ad;
91015e32d5dSMike Smith 
91115e32d5dSMike Smith     if ((ad = device_get_ivars(child)) == NULL) {
9122d0c82e8SJung-uk Kim 	device_printf(child, "device has no ivars\n");
91315e32d5dSMike Smith 	return (ENOENT);
91415e32d5dSMike Smith     }
91515e32d5dSMike Smith 
916be2b1797SNate Lawson     /* ACPI and ISA compatibility ivars */
91715e32d5dSMike Smith     switch(index) {
91815e32d5dSMike Smith     case ACPI_IVAR_HANDLE:
91915e32d5dSMike Smith 	*(ACPI_HANDLE *)result = ad->ad_handle;
92015e32d5dSMike Smith 	break;
92115e32d5dSMike Smith     case ACPI_IVAR_PRIVATE:
92215e32d5dSMike Smith 	*(void **)result = ad->ad_private;
92315e32d5dSMike Smith 	break;
924d4b9ff91SNate Lawson     case ACPI_IVAR_FLAGS:
925d4b9ff91SNate Lawson 	*(int *)result = ad->ad_flags;
926d4b9ff91SNate Lawson 	break;
92732d18aa5SMike Smith     case ISA_IVAR_VENDORID:
92832d18aa5SMike Smith     case ISA_IVAR_SERIAL:
92932d18aa5SMike Smith     case ISA_IVAR_COMPATID:
93032d18aa5SMike Smith 	*(int *)result = -1;
93132d18aa5SMike Smith 	break;
93232d18aa5SMike Smith     case ISA_IVAR_LOGICALID:
93332d18aa5SMike Smith 	*(int *)result = acpi_isa_get_logicalid(child);
93432d18aa5SMike Smith 	break;
93515e32d5dSMike Smith     default:
93615e32d5dSMike Smith 	return (ENOENT);
93715e32d5dSMike Smith     }
938be2b1797SNate Lawson 
93915e32d5dSMike Smith     return (0);
94015e32d5dSMike Smith }
94115e32d5dSMike Smith 
94215e32d5dSMike Smith static int
94315e32d5dSMike Smith acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
94415e32d5dSMike Smith {
94515e32d5dSMike Smith     struct acpi_device	*ad;
94615e32d5dSMike Smith 
94715e32d5dSMike Smith     if ((ad = device_get_ivars(child)) == NULL) {
9482d0c82e8SJung-uk Kim 	device_printf(child, "device has no ivars\n");
94915e32d5dSMike Smith 	return (ENOENT);
95015e32d5dSMike Smith     }
95115e32d5dSMike Smith 
95215e32d5dSMike Smith     switch(index) {
95315e32d5dSMike Smith     case ACPI_IVAR_HANDLE:
95415e32d5dSMike Smith 	ad->ad_handle = (ACPI_HANDLE)value;
95515e32d5dSMike Smith 	break;
95615e32d5dSMike Smith     case ACPI_IVAR_PRIVATE:
95715e32d5dSMike Smith 	ad->ad_private = (void *)value;
95815e32d5dSMike Smith 	break;
959d4b9ff91SNate Lawson     case ACPI_IVAR_FLAGS:
960d4b9ff91SNate Lawson 	ad->ad_flags = (int)value;
961d4b9ff91SNate Lawson 	break;
96215e32d5dSMike Smith     default:
9632ab060eeSWarner Losh 	panic("bad ivar write request (%d)", index);
96415e32d5dSMike Smith 	return (ENOENT);
96515e32d5dSMike Smith     }
966be2b1797SNate Lawson 
96715e32d5dSMike Smith     return (0);
96815e32d5dSMike Smith }
96915e32d5dSMike Smith 
97015e32d5dSMike Smith /*
97115e32d5dSMike Smith  * Handle child resource allocation/removal
97215e32d5dSMike Smith  */
97391233413SNate Lawson static struct resource_list *
97491233413SNate Lawson acpi_get_rlist(device_t dev, device_t child)
97515e32d5dSMike Smith {
97691233413SNate Lawson     struct acpi_device		*ad;
97715e32d5dSMike Smith 
97891233413SNate Lawson     ad = device_get_ivars(child);
97991233413SNate Lawson     return (&ad->ad_rl);
98015e32d5dSMike Smith }
98115e32d5dSMike Smith 
9820d484d24SJohn Baldwin static int
9830d484d24SJohn Baldwin acpi_match_resource_hint(device_t dev, int type, long value)
9840d484d24SJohn Baldwin {
9850d484d24SJohn Baldwin     struct acpi_device *ad = device_get_ivars(dev);
9860d484d24SJohn Baldwin     struct resource_list *rl = &ad->ad_rl;
9870d484d24SJohn Baldwin     struct resource_list_entry *rle;
9880d484d24SJohn Baldwin 
9890d484d24SJohn Baldwin     STAILQ_FOREACH(rle, rl, link) {
9900d484d24SJohn Baldwin 	if (rle->type != type)
9910d484d24SJohn Baldwin 	    continue;
9920d484d24SJohn Baldwin 	if (rle->start <= value && rle->end >= value)
9930d484d24SJohn Baldwin 	    return (1);
9940d484d24SJohn Baldwin     }
9950d484d24SJohn Baldwin     return (0);
9960d484d24SJohn Baldwin }
9970d484d24SJohn Baldwin 
9980d484d24SJohn Baldwin /*
9990d484d24SJohn Baldwin  * Wire device unit numbers based on resource matches in hints.
10000d484d24SJohn Baldwin  */
10010d484d24SJohn Baldwin static void
10020d484d24SJohn Baldwin acpi_hint_device_unit(device_t acdev, device_t child, const char *name,
10030d484d24SJohn Baldwin     int *unitp)
10040d484d24SJohn Baldwin {
10050d484d24SJohn Baldwin     const char *s;
10060d484d24SJohn Baldwin     long value;
10070d484d24SJohn Baldwin     int line, matches, unit;
10080d484d24SJohn Baldwin 
10090d484d24SJohn Baldwin     /*
10100d484d24SJohn Baldwin      * Iterate over all the hints for the devices with the specified
10110d484d24SJohn Baldwin      * name to see if one's resources are a subset of this device.
10120d484d24SJohn Baldwin      */
10130d484d24SJohn Baldwin     line = 0;
10140d484d24SJohn Baldwin     for (;;) {
10150d484d24SJohn Baldwin 	if (resource_find_dev(&line, name, &unit, "at", NULL) != 0)
10160d484d24SJohn Baldwin 	    break;
10170d484d24SJohn Baldwin 
10180d484d24SJohn Baldwin 	/* Must have an "at" for acpi or isa. */
10190d484d24SJohn Baldwin 	resource_string_value(name, unit, "at", &s);
10200d484d24SJohn Baldwin 	if (!(strcmp(s, "acpi0") == 0 || strcmp(s, "acpi") == 0 ||
10210d484d24SJohn Baldwin 	    strcmp(s, "isa0") == 0 || strcmp(s, "isa") == 0))
10220d484d24SJohn Baldwin 	    continue;
10230d484d24SJohn Baldwin 
10240d484d24SJohn Baldwin 	/*
10252fcd493cSJohn Baldwin 	 * Check for matching resources.  We must have at least one match.
10262fcd493cSJohn Baldwin 	 * Since I/O and memory resources cannot be shared, if we get a
10272fcd493cSJohn Baldwin 	 * match on either of those, ignore any mismatches in IRQs or DRQs.
10280d484d24SJohn Baldwin 	 *
10290d484d24SJohn Baldwin 	 * XXX: We may want to revisit this to be more lenient and wire
10300d484d24SJohn Baldwin 	 * as long as it gets one match.
10310d484d24SJohn Baldwin 	 */
10320d484d24SJohn Baldwin 	matches = 0;
10330d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "port", &value) == 0) {
10342fcd493cSJohn Baldwin 	    /*
10352fcd493cSJohn Baldwin 	     * Floppy drive controllers are notorious for having a
10362fcd493cSJohn Baldwin 	     * wide variety of resources not all of which include the
10372fcd493cSJohn Baldwin 	     * first port that is specified by the hint (typically
10382fcd493cSJohn Baldwin 	     * 0x3f0) (see the comment above fdc_isa_alloc_resources()
10392fcd493cSJohn Baldwin 	     * in fdc_isa.c).  However, they do all seem to include
10402fcd493cSJohn Baldwin 	     * port + 2 (e.g. 0x3f2) so for a floppy device, look for
10412fcd493cSJohn Baldwin 	     * 'value + 2' in the port resources instead of the hint
10422fcd493cSJohn Baldwin 	     * value.
10432fcd493cSJohn Baldwin 	     */
10442fcd493cSJohn Baldwin 	    if (strcmp(name, "fdc") == 0)
10452fcd493cSJohn Baldwin 		value += 2;
10460d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value))
10470d484d24SJohn Baldwin 		matches++;
10480d484d24SJohn Baldwin 	    else
10490d484d24SJohn Baldwin 		continue;
10500d484d24SJohn Baldwin 	}
10510d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "maddr", &value) == 0) {
10520d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_MEMORY, value))
10530d484d24SJohn Baldwin 		matches++;
10540d484d24SJohn Baldwin 	    else
10550d484d24SJohn Baldwin 		continue;
10560d484d24SJohn Baldwin 	}
10572fcd493cSJohn Baldwin 	if (matches > 0)
10582fcd493cSJohn Baldwin 	    goto matched;
10590d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "irq", &value) == 0) {
10600d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_IRQ, value))
10610d484d24SJohn Baldwin 		matches++;
10620d484d24SJohn Baldwin 	    else
10630d484d24SJohn Baldwin 		continue;
10640d484d24SJohn Baldwin 	}
10650d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "drq", &value) == 0) {
10660d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_DRQ, value))
10670d484d24SJohn Baldwin 		matches++;
10680d484d24SJohn Baldwin 	    else
10690d484d24SJohn Baldwin 		continue;
10700d484d24SJohn Baldwin 	}
10710d484d24SJohn Baldwin 
10722fcd493cSJohn Baldwin     matched:
10730d484d24SJohn Baldwin 	if (matches > 0) {
10740d484d24SJohn Baldwin 	    /* We have a winner! */
10750d484d24SJohn Baldwin 	    *unitp = unit;
10760d484d24SJohn Baldwin 	    break;
10770d484d24SJohn Baldwin 	}
10780d484d24SJohn Baldwin     }
10790d484d24SJohn Baldwin }
10800d484d24SJohn Baldwin 
1081adad4744SNate Lawson /*
1082adad4744SNate Lawson  * Pre-allocate/manage all memory and IO resources.  Since rman can't handle
1083adad4744SNate Lawson  * duplicates, we merge any in the sysresource attach routine.
1084adad4744SNate Lawson  */
1085adad4744SNate Lawson static int
1086adad4744SNate Lawson acpi_sysres_alloc(device_t dev)
1087adad4744SNate Lawson {
1088adad4744SNate Lawson     struct resource *res;
1089adad4744SNate Lawson     struct resource_list *rl;
1090adad4744SNate Lawson     struct resource_list_entry *rle;
1091adad4744SNate Lawson     struct rman *rm;
1092da72d149SNate Lawson     char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1093da72d149SNate Lawson     device_t *children;
1094da72d149SNate Lawson     int child_count, i;
1095da72d149SNate Lawson 
1096da72d149SNate Lawson     /*
1097da72d149SNate Lawson      * Probe/attach any sysresource devices.  This would be unnecessary if we
1098da72d149SNate Lawson      * had multi-pass probe/attach.
1099da72d149SNate Lawson      */
1100da72d149SNate Lawson     if (device_get_children(dev, &children, &child_count) != 0)
1101da72d149SNate Lawson 	return (ENXIO);
1102da72d149SNate Lawson     for (i = 0; i < child_count; i++) {
1103da72d149SNate Lawson 	if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1104da72d149SNate Lawson 	    device_probe_and_attach(children[i]);
1105da72d149SNate Lawson     }
1106da72d149SNate Lawson     free(children, M_TEMP);
1107adad4744SNate Lawson 
1108adad4744SNate Lawson     rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
1109be1bf4d2SPoul-Henning Kamp     STAILQ_FOREACH(rle, rl, link) {
1110adad4744SNate Lawson 	if (rle->res != NULL) {
1111adad4744SNate Lawson 	    device_printf(dev, "duplicate resource for %lx\n", rle->start);
1112adad4744SNate Lawson 	    continue;
1113adad4744SNate Lawson 	}
1114adad4744SNate Lawson 
1115adad4744SNate Lawson 	/* Only memory and IO resources are valid here. */
1116adad4744SNate Lawson 	switch (rle->type) {
1117adad4744SNate Lawson 	case SYS_RES_IOPORT:
1118adad4744SNate Lawson 	    rm = &acpi_rman_io;
1119adad4744SNate Lawson 	    break;
1120adad4744SNate Lawson 	case SYS_RES_MEMORY:
1121adad4744SNate Lawson 	    rm = &acpi_rman_mem;
1122adad4744SNate Lawson 	    break;
1123adad4744SNate Lawson 	default:
1124adad4744SNate Lawson 	    continue;
1125adad4744SNate Lawson 	}
1126adad4744SNate Lawson 
1127adad4744SNate Lawson 	/* Pre-allocate resource and add to our rman pool. */
1128adad4744SNate Lawson 	res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1129adad4744SNate Lawson 	    &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
1130adad4744SNate Lawson 	if (res != NULL) {
1131adad4744SNate Lawson 	    rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1132adad4744SNate Lawson 	    rle->res = res;
1133adad4744SNate Lawson 	} else
1134adad4744SNate Lawson 	    device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1135adad4744SNate Lawson 		rle->start, rle->count, rle->type);
1136adad4744SNate Lawson     }
1137adad4744SNate Lawson     return (0);
1138adad4744SNate Lawson }
1139adad4744SNate Lawson 
114015e32d5dSMike Smith static struct resource *
114115e32d5dSMike Smith acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
114215e32d5dSMike Smith     u_long start, u_long end, u_long count, u_int flags)
114315e32d5dSMike Smith {
114495957f62SJohn Baldwin     ACPI_RESOURCE ares;
114515e32d5dSMike Smith     struct acpi_device *ad = device_get_ivars(child);
114615e32d5dSMike Smith     struct resource_list *rl = &ad->ad_rl;
114791233413SNate Lawson     struct resource_list_entry *rle;
114891233413SNate Lawson     struct resource *res;
114991233413SNate Lawson     struct rman *rm;
115015e32d5dSMike Smith 
115115e2f34fSNate Lawson     res = NULL;
1152397c30a8SJohn Baldwin 
1153397c30a8SJohn Baldwin     /* We only handle memory and IO resources through rman. */
1154397c30a8SJohn Baldwin     switch (type) {
1155397c30a8SJohn Baldwin     case SYS_RES_IOPORT:
1156397c30a8SJohn Baldwin 	rm = &acpi_rman_io;
1157397c30a8SJohn Baldwin 	break;
1158397c30a8SJohn Baldwin     case SYS_RES_MEMORY:
1159397c30a8SJohn Baldwin 	rm = &acpi_rman_mem;
1160397c30a8SJohn Baldwin 	break;
1161397c30a8SJohn Baldwin     default:
1162397c30a8SJohn Baldwin 	rm = NULL;
1163397c30a8SJohn Baldwin     }
1164397c30a8SJohn Baldwin 
116515e2f34fSNate Lawson     ACPI_SERIAL_BEGIN(acpi);
116615e2f34fSNate Lawson 
116791233413SNate Lawson     /*
116891233413SNate Lawson      * If this is an allocation of the "default" range for a given RID, and
116991233413SNate Lawson      * we know what the resources for this device are (i.e., they're on the
117091233413SNate Lawson      * child's resource list), use those start/end values.
117191233413SNate Lawson      */
1172f09aa88cSWarner Losh     if (bus == device_get_parent(child) && start == 0UL && end == ~0UL) {
117391233413SNate Lawson 	rle = resource_list_find(rl, type, *rid);
117491233413SNate Lawson 	if (rle == NULL)
117515e2f34fSNate Lawson 	    goto out;
117691233413SNate Lawson 	start = rle->start;
117791233413SNate Lawson 	end = rle->end;
117891233413SNate Lawson 	count = rle->count;
117991233413SNate Lawson     }
118091233413SNate Lawson 
1181397c30a8SJohn Baldwin     /*
1182397c30a8SJohn Baldwin      * If this is an allocation of a specific range, see if we can satisfy
1183397c30a8SJohn Baldwin      * the request from our system resource regions.  If we can't, pass the
1184397c30a8SJohn Baldwin      * request up to the parent.
1185397c30a8SJohn Baldwin      */
1186147c0ad0SJohn Baldwin     if (start + count - 1 == end && rm != NULL)
1187397c30a8SJohn Baldwin 	res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1188397c30a8SJohn Baldwin 	    child);
1189397c30a8SJohn Baldwin     if (res == NULL) {
119095957f62SJohn Baldwin 	res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
119195957f62SJohn Baldwin 	    start, end, count, flags);
119295957f62SJohn Baldwin     } else {
1193c3f861f4SWarner Losh 	rman_set_rid(res, *rid);
119491233413SNate Lawson 
119591233413SNate Lawson 	/* If requested, activate the resource using the parent's method. */
119695957f62SJohn Baldwin 	if (flags & RF_ACTIVE)
119791233413SNate Lawson 	    if (bus_activate_resource(child, type, *rid, res) != 0) {
119891233413SNate Lawson 		rman_release_resource(res);
119915e2f34fSNate Lawson 		res = NULL;
120015e2f34fSNate Lawson 		goto out;
120191233413SNate Lawson 	    }
120295957f62SJohn Baldwin     }
120391233413SNate Lawson 
120495957f62SJohn Baldwin     if (res != NULL && device_get_parent(child) == bus)
120595957f62SJohn Baldwin 	switch (type) {
120695957f62SJohn Baldwin 	case SYS_RES_IRQ:
120795957f62SJohn Baldwin 	    /*
120895957f62SJohn Baldwin 	     * Since bus_config_intr() takes immediate effect, we cannot
120995957f62SJohn Baldwin 	     * configure the interrupt associated with a device when we
121095957f62SJohn Baldwin 	     * parse the resources but have to defer it until a driver
121195957f62SJohn Baldwin 	     * actually allocates the interrupt via bus_alloc_resource().
121295957f62SJohn Baldwin 	     *
121395957f62SJohn Baldwin 	     * XXX: Should we handle the lookup failing?
121495957f62SJohn Baldwin 	     */
121595957f62SJohn Baldwin 	    if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
121695957f62SJohn Baldwin 		acpi_config_intr(child, &ares);
121795957f62SJohn Baldwin 	    break;
121895957f62SJohn Baldwin 	}
121915e2f34fSNate Lawson 
122015e2f34fSNate Lawson out:
122115e2f34fSNate Lawson     ACPI_SERIAL_END(acpi);
122291233413SNate Lawson     return (res);
122315e32d5dSMike Smith }
122415e32d5dSMike Smith 
122515e32d5dSMike Smith static int
122691233413SNate Lawson acpi_release_resource(device_t bus, device_t child, int type, int rid,
122791233413SNate Lawson     struct resource *r)
122815e32d5dSMike Smith {
1229397c30a8SJohn Baldwin     struct rman *rm;
123091233413SNate Lawson     int ret;
123115e32d5dSMike Smith 
1232397c30a8SJohn Baldwin     /* We only handle memory and IO resources through rman. */
1233397c30a8SJohn Baldwin     switch (type) {
1234397c30a8SJohn Baldwin     case SYS_RES_IOPORT:
1235397c30a8SJohn Baldwin 	rm = &acpi_rman_io;
1236397c30a8SJohn Baldwin 	break;
1237397c30a8SJohn Baldwin     case SYS_RES_MEMORY:
1238397c30a8SJohn Baldwin 	rm = &acpi_rman_mem;
1239397c30a8SJohn Baldwin 	break;
1240397c30a8SJohn Baldwin     default:
1241397c30a8SJohn Baldwin 	rm = NULL;
1242397c30a8SJohn Baldwin     }
1243397c30a8SJohn Baldwin 
124415e2f34fSNate Lawson     ACPI_SERIAL_BEGIN(acpi);
124515e2f34fSNate Lawson 
124691233413SNate Lawson     /*
1247397c30a8SJohn Baldwin      * If this resource belongs to one of our internal managers,
1248397c30a8SJohn Baldwin      * deactivate it and release it to the local pool.  If it doesn't,
1249397c30a8SJohn Baldwin      * pass this request up to the parent.
125091233413SNate Lawson      */
1251397c30a8SJohn Baldwin     if (rm != NULL && rman_is_region_manager(r, rm)) {
125291233413SNate Lawson 	if (rman_get_flags(r) & RF_ACTIVE) {
125391233413SNate Lawson 	    ret = bus_deactivate_resource(child, type, rid, r);
125491233413SNate Lawson 	    if (ret != 0)
125515e2f34fSNate Lawson 		goto out;
125691233413SNate Lawson 	}
125791233413SNate Lawson 	ret = rman_release_resource(r);
125891233413SNate Lawson     } else
125991233413SNate Lawson 	ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
126091233413SNate Lawson 
126115e2f34fSNate Lawson out:
126215e2f34fSNate Lawson     ACPI_SERIAL_END(acpi);
126391233413SNate Lawson     return (ret);
126415e32d5dSMike Smith }
126515e32d5dSMike Smith 
12668b28b622SNate Lawson static void
12678b28b622SNate Lawson acpi_delete_resource(device_t bus, device_t child, int type, int rid)
12688b28b622SNate Lawson {
12698b28b622SNate Lawson     struct resource_list *rl;
12708b28b622SNate Lawson 
12718b28b622SNate Lawson     rl = acpi_get_rlist(bus, child);
12728b28b622SNate Lawson     resource_list_delete(rl, type, rid);
12738b28b622SNate Lawson }
12748b28b622SNate Lawson 
1275dc750869SNate Lawson /* Allocate an IO port or memory resource, given its GAS. */
1276e1c4bf3fSNate Lawson int
1277e1c4bf3fSNate Lawson acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1278907b6777SNate Lawson     struct resource **res, u_int flags)
1279dc750869SNate Lawson {
1280e1c4bf3fSNate Lawson     int error, res_type;
1281dc750869SNate Lawson 
1282e1c4bf3fSNate Lawson     error = ENOMEM;
12838f118e25SNate Lawson     if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1284e1c4bf3fSNate Lawson 	return (EINVAL);
1285dc750869SNate Lawson 
12868f118e25SNate Lawson     /* We only support memory and IO spaces. */
12872be4e471SJung-uk Kim     switch (gas->SpaceId) {
1288dc750869SNate Lawson     case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1289e1c4bf3fSNate Lawson 	res_type = SYS_RES_MEMORY;
1290dc750869SNate Lawson 	break;
1291dc750869SNate Lawson     case ACPI_ADR_SPACE_SYSTEM_IO:
1292e1c4bf3fSNate Lawson 	res_type = SYS_RES_IOPORT;
1293dc750869SNate Lawson 	break;
1294dc750869SNate Lawson     default:
1295e1c4bf3fSNate Lawson 	return (EOPNOTSUPP);
1296dc750869SNate Lawson     }
1297dc750869SNate Lawson 
12982fe912dfSNate Lawson     /*
1299f45fc848SNate Lawson      * If the register width is less than 8, assume the BIOS author means
1300f45fc848SNate Lawson      * it is a bit field and just allocate a byte.
13012fe912dfSNate Lawson      */
13022be4e471SJung-uk Kim     if (gas->BitWidth && gas->BitWidth < 8)
13032be4e471SJung-uk Kim 	gas->BitWidth = 8;
13042fe912dfSNate Lawson 
13058f118e25SNate Lawson     /* Validate the address after we're sure we support the space. */
13062be4e471SJung-uk Kim     if (gas->Address == 0 || gas->BitWidth == 0)
13078f118e25SNate Lawson 	return (EINVAL);
13088f118e25SNate Lawson 
1309e1c4bf3fSNate Lawson     bus_set_resource(dev, res_type, *rid, gas->Address,
13102be4e471SJung-uk Kim 	gas->BitWidth / 8);
1311907b6777SNate Lawson     *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1312e1c4bf3fSNate Lawson     if (*res != NULL) {
1313e1c4bf3fSNate Lawson 	*type = res_type;
1314e1c4bf3fSNate Lawson 	error = 0;
1315ca2c69c8SNate Lawson     } else
1316ca2c69c8SNate Lawson 	bus_delete_resource(dev, res_type, *rid);
1317ca2c69c8SNate Lawson 
1318e1c4bf3fSNate Lawson     return (error);
1319dc750869SNate Lawson }
1320dc750869SNate Lawson 
1321c796e27bSNate Lawson /* Probe _HID and _CID for compatible ISA PNP ids. */
13221e4925e8SNate Lawson static uint32_t
132332d18aa5SMike Smith acpi_isa_get_logicalid(device_t dev)
1324bc0f2195SMike Smith {
13251e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
1326bc0f2195SMike Smith     ACPI_HANDLE		h;
132792488a57SJung-uk Kim     uint32_t		pnpid;
132832d18aa5SMike Smith 
1329b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
133032d18aa5SMike Smith 
13316fca9360SNate Lawson     /* Fetch and validate the HID. */
133292488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
133392488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
133492488a57SJung-uk Kim 	return_VALUE (0);
133532d18aa5SMike Smith 
133692488a57SJung-uk Kim     pnpid = (devinfo->Valid & ACPI_VALID_HID) != 0 &&
133792488a57SJung-uk Kim 	devinfo->HardwareId.Length >= ACPI_EISAID_STRING_SIZE ?
133892488a57SJung-uk Kim 	PNP_EISAID(devinfo->HardwareId.String) : 0;
133992488a57SJung-uk Kim     AcpiOsFree(devinfo);
1340be2b1797SNate Lawson 
134132d18aa5SMike Smith     return_VALUE (pnpid);
134232d18aa5SMike Smith }
134332d18aa5SMike Smith 
13441e4925e8SNate Lawson static int
13451e4925e8SNate Lawson acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1346b2566207STakanori Watanabe {
13471e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
134892488a57SJung-uk Kim     ACPI_DEVICE_ID	*ids;
1349b2566207STakanori Watanabe     ACPI_HANDLE		h;
13501e4925e8SNate Lawson     uint32_t		*pnpid;
135192488a57SJung-uk Kim     int			i, valid;
1352b2566207STakanori Watanabe 
1353b2566207STakanori Watanabe     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1354b2566207STakanori Watanabe 
13551e4925e8SNate Lawson     pnpid = cids;
1356bd189fe7SNate Lawson 
13571e4925e8SNate Lawson     /* Fetch and validate the CID */
135892488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
135992488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
136092488a57SJung-uk Kim 	return_VALUE (0);
1361b2566207STakanori Watanabe 
136292488a57SJung-uk Kim     if ((devinfo->Valid & ACPI_VALID_CID) == 0) {
136392488a57SJung-uk Kim 	AcpiOsFree(devinfo);
136492488a57SJung-uk Kim 	return_VALUE (0);
1365b2566207STakanori Watanabe     }
1366b2566207STakanori Watanabe 
136792488a57SJung-uk Kim     if (devinfo->CompatibleIdList.Count < count)
136892488a57SJung-uk Kim 	count = devinfo->CompatibleIdList.Count;
136992488a57SJung-uk Kim     ids = devinfo->CompatibleIdList.Ids;
137092488a57SJung-uk Kim     for (i = 0, valid = 0; i < count; i++)
137192488a57SJung-uk Kim 	if (ids[i].Length >= ACPI_EISAID_STRING_SIZE &&
137292488a57SJung-uk Kim 	    strncmp(ids[i].String, "PNP", 3) == 0) {
137392488a57SJung-uk Kim 	    *pnpid++ = PNP_EISAID(ids[i].String);
137492488a57SJung-uk Kim 	    valid++;
137592488a57SJung-uk Kim 	}
137692488a57SJung-uk Kim     AcpiOsFree(devinfo);
137792488a57SJung-uk Kim 
13781e4925e8SNate Lawson     return_VALUE (valid);
13791e4925e8SNate Lawson }
1380b2566207STakanori Watanabe 
1381ce619b2eSNate Lawson static char *
1382ce619b2eSNate Lawson acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1383ce619b2eSNate Lawson {
1384ce619b2eSNate Lawson     ACPI_HANDLE h;
138592488a57SJung-uk Kim     ACPI_OBJECT_TYPE t;
1386ce619b2eSNate Lawson     int i;
1387ce619b2eSNate Lawson 
1388ce619b2eSNate Lawson     h = acpi_get_handle(dev);
138992488a57SJung-uk Kim     if (ids == NULL || h == NULL)
139092488a57SJung-uk Kim 	return (NULL);
139192488a57SJung-uk Kim     t = acpi_get_type(dev);
139292488a57SJung-uk Kim     if (t != ACPI_TYPE_DEVICE && t != ACPI_TYPE_PROCESSOR)
1393ce619b2eSNate Lawson 	return (NULL);
1394ce619b2eSNate Lawson 
1395ce619b2eSNate Lawson     /* Try to match one of the array of IDs with a HID or CID. */
1396ce619b2eSNate Lawson     for (i = 0; ids[i] != NULL; i++) {
1397ce619b2eSNate Lawson 	if (acpi_MatchHid(h, ids[i]))
1398ce619b2eSNate Lawson 	    return (ids[i]);
1399ce619b2eSNate Lawson     }
1400ce619b2eSNate Lawson     return (NULL);
1401ce619b2eSNate Lawson }
1402ce619b2eSNate Lawson 
1403ce619b2eSNate Lawson static ACPI_STATUS
1404ce619b2eSNate Lawson acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1405ce619b2eSNate Lawson     ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1406ce619b2eSNate Lawson {
1407ce619b2eSNate Lawson     ACPI_HANDLE h;
1408ce619b2eSNate Lawson 
1409df8d2a32SNate Lawson     if (dev == NULL)
1410df8d2a32SNate Lawson 	h = ACPI_ROOT_OBJECT;
1411df8d2a32SNate Lawson     else if ((h = acpi_get_handle(dev)) == NULL)
1412ce619b2eSNate Lawson 	return (AE_BAD_PARAMETER);
1413ce619b2eSNate Lawson     return (AcpiEvaluateObject(h, pathname, parameters, ret));
1414ce619b2eSNate Lawson }
1415ce619b2eSNate Lawson 
141662508c53SJohn Baldwin int
141710ce62b9SNate Lawson acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
141810ce62b9SNate Lawson {
141910ce62b9SNate Lawson     struct acpi_softc *sc;
142010ce62b9SNate Lawson     ACPI_HANDLE handle;
142110ce62b9SNate Lawson     ACPI_STATUS status;
142210ce62b9SNate Lawson     char sxd[8];
142310ce62b9SNate Lawson     int error;
142410ce62b9SNate Lawson 
142510ce62b9SNate Lawson     sc = device_get_softc(bus);
142610ce62b9SNate Lawson     handle = acpi_get_handle(dev);
142710ce62b9SNate Lawson 
142810ce62b9SNate Lawson     /*
142910ce62b9SNate Lawson      * XXX If we find these devices, don't try to power them down.
143010ce62b9SNate Lawson      * The serial and IRDA ports on my T23 hang the system when
143110ce62b9SNate Lawson      * set to D3 and it appears that such legacy devices may
143210ce62b9SNate Lawson      * need special handling in their drivers.
143310ce62b9SNate Lawson      */
143410ce62b9SNate Lawson     if (handle == NULL ||
143510ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0500") ||
143610ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0501") ||
143710ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0502") ||
143810ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0510") ||
143910ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0511"))
144010ce62b9SNate Lawson 	return (ENXIO);
144110ce62b9SNate Lawson 
144210ce62b9SNate Lawson     /*
144310ce62b9SNate Lawson      * Override next state with the value from _SxD, if present.  If no
144410ce62b9SNate Lawson      * dstate argument was provided, don't fetch the return value.
144510ce62b9SNate Lawson      */
144610ce62b9SNate Lawson     snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
144710ce62b9SNate Lawson     if (dstate)
144810ce62b9SNate Lawson 	status = acpi_GetInteger(handle, sxd, dstate);
144910ce62b9SNate Lawson     else
145010ce62b9SNate Lawson 	status = AcpiEvaluateObject(handle, sxd, NULL, NULL);
145110ce62b9SNate Lawson 
145210ce62b9SNate Lawson     switch (status) {
145310ce62b9SNate Lawson     case AE_OK:
145410ce62b9SNate Lawson 	error = 0;
145510ce62b9SNate Lawson 	break;
145610ce62b9SNate Lawson     case AE_NOT_FOUND:
145710ce62b9SNate Lawson 	error = ESRCH;
145810ce62b9SNate Lawson 	break;
145910ce62b9SNate Lawson     default:
146010ce62b9SNate Lawson 	error = ENXIO;
146110ce62b9SNate Lawson 	break;
146210ce62b9SNate Lawson     }
146310ce62b9SNate Lawson 
146410ce62b9SNate Lawson     return (error);
146510ce62b9SNate Lawson }
146610ce62b9SNate Lawson 
1467df8d2a32SNate Lawson /* Callback arg for our implementation of walking the namespace. */
1468df8d2a32SNate Lawson struct acpi_device_scan_ctx {
1469df8d2a32SNate Lawson     acpi_scan_cb_t	user_fn;
1470df8d2a32SNate Lawson     void		*arg;
1471df8d2a32SNate Lawson     ACPI_HANDLE		parent;
1472df8d2a32SNate Lawson };
1473df8d2a32SNate Lawson 
1474ce619b2eSNate Lawson static ACPI_STATUS
1475df8d2a32SNate Lawson acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1476df8d2a32SNate Lawson {
1477df8d2a32SNate Lawson     struct acpi_device_scan_ctx *ctx;
1478df8d2a32SNate Lawson     device_t dev, old_dev;
1479df8d2a32SNate Lawson     ACPI_STATUS status;
1480df8d2a32SNate Lawson     ACPI_OBJECT_TYPE type;
1481df8d2a32SNate Lawson 
1482df8d2a32SNate Lawson     /*
1483df8d2a32SNate Lawson      * Skip this device if we think we'll have trouble with it or it is
1484df8d2a32SNate Lawson      * the parent where the scan began.
1485df8d2a32SNate Lawson      */
1486df8d2a32SNate Lawson     ctx = (struct acpi_device_scan_ctx *)arg;
1487df8d2a32SNate Lawson     if (acpi_avoid(h) || h == ctx->parent)
1488df8d2a32SNate Lawson 	return (AE_OK);
1489df8d2a32SNate Lawson 
1490df8d2a32SNate Lawson     /* If this is not a valid device type (e.g., a method), skip it. */
1491df8d2a32SNate Lawson     if (ACPI_FAILURE(AcpiGetType(h, &type)))
1492df8d2a32SNate Lawson 	return (AE_OK);
1493df8d2a32SNate Lawson     if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1494df8d2a32SNate Lawson 	type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1495df8d2a32SNate Lawson 	return (AE_OK);
1496df8d2a32SNate Lawson 
1497df8d2a32SNate Lawson     /*
1498df8d2a32SNate Lawson      * Call the user function with the current device.  If it is unchanged
1499df8d2a32SNate Lawson      * afterwards, return.  Otherwise, we update the handle to the new dev.
1500df8d2a32SNate Lawson      */
1501df8d2a32SNate Lawson     old_dev = acpi_get_device(h);
1502df8d2a32SNate Lawson     dev = old_dev;
1503df8d2a32SNate Lawson     status = ctx->user_fn(h, &dev, level, ctx->arg);
1504df8d2a32SNate Lawson     if (ACPI_FAILURE(status) || old_dev == dev)
1505df8d2a32SNate Lawson 	return (status);
1506df8d2a32SNate Lawson 
1507df8d2a32SNate Lawson     /* Remove the old child and its connection to the handle. */
1508df8d2a32SNate Lawson     if (old_dev != NULL) {
1509df8d2a32SNate Lawson 	device_delete_child(device_get_parent(old_dev), old_dev);
1510df8d2a32SNate Lawson 	AcpiDetachData(h, acpi_fake_objhandler);
1511df8d2a32SNate Lawson     }
1512df8d2a32SNate Lawson 
1513df8d2a32SNate Lawson     /* Recreate the handle association if the user created a device. */
1514df8d2a32SNate Lawson     if (dev != NULL)
1515df8d2a32SNate Lawson 	AcpiAttachData(h, acpi_fake_objhandler, dev);
1516df8d2a32SNate Lawson 
1517df8d2a32SNate Lawson     return (AE_OK);
1518df8d2a32SNate Lawson }
1519df8d2a32SNate Lawson 
1520df8d2a32SNate Lawson static ACPI_STATUS
1521df8d2a32SNate Lawson acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1522df8d2a32SNate Lawson     acpi_scan_cb_t user_fn, void *arg)
1523ce619b2eSNate Lawson {
1524ce619b2eSNate Lawson     ACPI_HANDLE h;
1525df8d2a32SNate Lawson     struct acpi_device_scan_ctx ctx;
1526ce619b2eSNate Lawson 
1527df8d2a32SNate Lawson     if (acpi_disabled("children"))
1528df8d2a32SNate Lawson 	return (AE_OK);
1529df8d2a32SNate Lawson 
1530df8d2a32SNate Lawson     if (dev == NULL)
1531df8d2a32SNate Lawson 	h = ACPI_ROOT_OBJECT;
1532df8d2a32SNate Lawson     else if ((h = acpi_get_handle(dev)) == NULL)
1533ce619b2eSNate Lawson 	return (AE_BAD_PARAMETER);
1534df8d2a32SNate Lawson     ctx.user_fn = user_fn;
1535df8d2a32SNate Lawson     ctx.arg = arg;
1536df8d2a32SNate Lawson     ctx.parent = h;
1537df8d2a32SNate Lawson     return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
15382272d050SJung-uk Kim 	acpi_device_scan_cb, NULL, &ctx, NULL));
1539ce619b2eSNate Lawson }
1540ce619b2eSNate Lawson 
154110ce62b9SNate Lawson /*
154210ce62b9SNate Lawson  * Even though ACPI devices are not PCI, we use the PCI approach for setting
154310ce62b9SNate Lawson  * device power states since it's close enough to ACPI.
154410ce62b9SNate Lawson  */
154510ce62b9SNate Lawson static int
154610ce62b9SNate Lawson acpi_set_powerstate_method(device_t bus, device_t child, int state)
154710ce62b9SNate Lawson {
154810ce62b9SNate Lawson     ACPI_HANDLE h;
154910ce62b9SNate Lawson     ACPI_STATUS status;
155010ce62b9SNate Lawson     int error;
155110ce62b9SNate Lawson 
155210ce62b9SNate Lawson     error = 0;
155310ce62b9SNate Lawson     h = acpi_get_handle(child);
1554a0e73a12SJung-uk Kim     if (state < ACPI_STATE_D0 || state > ACPI_D_STATES_MAX)
155510ce62b9SNate Lawson 	return (EINVAL);
155610ce62b9SNate Lawson     if (h == NULL)
155710ce62b9SNate Lawson 	return (0);
155810ce62b9SNate Lawson 
155910ce62b9SNate Lawson     /* Ignore errors if the power methods aren't present. */
156010ce62b9SNate Lawson     status = acpi_pwr_switch_consumer(h, state);
156110ce62b9SNate Lawson     if (ACPI_FAILURE(status) && status != AE_NOT_FOUND
156210ce62b9SNate Lawson 	&& status != AE_BAD_PARAMETER)
156310ce62b9SNate Lawson 	device_printf(bus, "failed to set ACPI power state D%d on %s: %s\n",
156410ce62b9SNate Lawson 	    state, acpi_name(h), AcpiFormatException(status));
156510ce62b9SNate Lawson 
156610ce62b9SNate Lawson     return (error);
156710ce62b9SNate Lawson }
156810ce62b9SNate Lawson 
156932d18aa5SMike Smith static int
157032d18aa5SMike Smith acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
157132d18aa5SMike Smith {
15721e4925e8SNate Lawson     int			result, cid_count, i;
15731e4925e8SNate Lawson     uint32_t		lid, cids[8];
1574bc0f2195SMike Smith 
1575b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1576bc0f2195SMike Smith 
1577bc0f2195SMike Smith     /*
1578bc0f2195SMike Smith      * ISA-style drivers attached to ACPI may persist and
1579bc0f2195SMike Smith      * probe manually if we return ENOENT.  We never want
1580bc0f2195SMike Smith      * that to happen, so don't ever return it.
1581bc0f2195SMike Smith      */
1582bc0f2195SMike Smith     result = ENXIO;
1583bc0f2195SMike Smith 
1584be2b1797SNate Lawson     /* Scan the supplied IDs for a match */
1585b2566207STakanori Watanabe     lid = acpi_isa_get_logicalid(child);
15861e4925e8SNate Lawson     cid_count = acpi_isa_get_compatid(child, cids, 8);
1587bc0f2195SMike Smith     while (ids && ids->ip_id) {
15881e4925e8SNate Lawson 	if (lid == ids->ip_id) {
1589bc0f2195SMike Smith 	    result = 0;
1590bc0f2195SMike Smith 	    goto out;
1591bc0f2195SMike Smith 	}
15921e4925e8SNate Lawson 	for (i = 0; i < cid_count; i++) {
15931e4925e8SNate Lawson 	    if (cids[i] == ids->ip_id) {
15941e4925e8SNate Lawson 		result = 0;
15951e4925e8SNate Lawson 		goto out;
15961e4925e8SNate Lawson 	    }
15971e4925e8SNate Lawson 	}
1598bc0f2195SMike Smith 	ids++;
1599bc0f2195SMike Smith     }
1600be2b1797SNate Lawson 
1601bc0f2195SMike Smith  out:
16029e0dd54fSNate Lawson     if (result == 0 && ids->ip_desc)
16039e0dd54fSNate Lawson 	device_set_desc(child, ids->ip_desc);
16049e0dd54fSNate Lawson 
1605bc0f2195SMike Smith     return_VALUE (result);
1606bc0f2195SMike Smith }
1607bc0f2195SMike Smith 
1608d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
1609d320e05cSJohn Baldwin /*
1610d320e05cSJohn Baldwin  * Look for a MCFG table.  If it is present, use the settings for
1611d320e05cSJohn Baldwin  * domain (segment) 0 to setup PCI config space access via the memory
1612d320e05cSJohn Baldwin  * map.
1613d320e05cSJohn Baldwin  */
1614d320e05cSJohn Baldwin static void
1615d320e05cSJohn Baldwin acpi_enable_pcie(void)
1616d320e05cSJohn Baldwin {
1617d320e05cSJohn Baldwin 	ACPI_TABLE_HEADER *hdr;
1618d320e05cSJohn Baldwin 	ACPI_MCFG_ALLOCATION *alloc, *end;
1619d320e05cSJohn Baldwin 	ACPI_STATUS status;
1620d320e05cSJohn Baldwin 
1621d320e05cSJohn Baldwin 	status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1622d320e05cSJohn Baldwin 	if (ACPI_FAILURE(status))
1623d320e05cSJohn Baldwin 		return;
1624d320e05cSJohn Baldwin 
1625d320e05cSJohn Baldwin 	end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1626d320e05cSJohn Baldwin 	alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1627d320e05cSJohn Baldwin 	while (alloc < end) {
1628d320e05cSJohn Baldwin 		if (alloc->PciSegment == 0) {
1629d320e05cSJohn Baldwin 			pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1630d320e05cSJohn Baldwin 			    alloc->EndBusNumber);
1631d320e05cSJohn Baldwin 			return;
1632d320e05cSJohn Baldwin 		}
1633d320e05cSJohn Baldwin 		alloc++;
1634d320e05cSJohn Baldwin 	}
1635d320e05cSJohn Baldwin }
1636d320e05cSJohn Baldwin #endif
1637d320e05cSJohn Baldwin 
1638bc0f2195SMike Smith /*
163933332dc2SNate Lawson  * Scan all of the ACPI namespace and attach child devices.
164015e32d5dSMike Smith  *
164133332dc2SNate Lawson  * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
164233332dc2SNate Lawson  * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
164333332dc2SNate Lawson  * However, in violation of the spec, some systems place their PCI link
164433332dc2SNate Lawson  * devices in \, so we have to walk the whole namespace.  We check the
164533332dc2SNate Lawson  * type of namespace nodes, so this should be ok.
164615e32d5dSMike Smith  */
164715e32d5dSMike Smith static void
164815e32d5dSMike Smith acpi_probe_children(device_t bus)
164915e32d5dSMike Smith {
165015e32d5dSMike Smith 
1651b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
16520ae55423SMike Smith 
165315e32d5dSMike Smith     /*
165415e32d5dSMike Smith      * Scan the namespace and insert placeholders for all the devices that
1655edc13633SNate Lawson      * we find.  We also probe/attach any early devices.
165615e32d5dSMike Smith      *
165715e32d5dSMike Smith      * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1658be2b1797SNate Lawson      * we want to create nodes for all devices, not just those that are
1659be2b1797SNate Lawson      * currently present. (This assumes that we don't want to create/remove
1660be2b1797SNate Lawson      * devices as they appear, which might be smarter.)
166115e32d5dSMike Smith      */
16624c1cdee6SMike Smith     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
166333332dc2SNate Lawson     AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child,
16642272d050SJung-uk Kim 	NULL, bus, NULL);
166515e32d5dSMike Smith 
1666adad4744SNate Lawson     /* Pre-allocate resources for our rman from any sysresource devices. */
1667adad4744SNate Lawson     acpi_sysres_alloc(bus);
1668adad4744SNate Lawson 
1669edc13633SNate Lawson     /* Create any static children by calling device identify methods. */
1670edc13633SNate Lawson     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1671edc13633SNate Lawson     bus_generic_probe(bus);
1672edc13633SNate Lawson 
1673edc13633SNate Lawson     /* Probe/attach all children, created staticly and from the namespace. */
16740430ba9eSAndriy Gapon     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "acpi bus_generic_attach\n"));
167515e32d5dSMike Smith     bus_generic_attach(bus);
16760ae55423SMike Smith 
167788a79fc0SNate Lawson     /* Attach wake sysctls. */
16785c9ea25eSNate Lawson     acpi_wake_sysctl_walk(bus);
167988a79fc0SNate Lawson 
1680bc0f2195SMike Smith     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
16810ae55423SMike Smith     return_VOID;
168215e32d5dSMike Smith }
168315e32d5dSMike Smith 
1684b82ca9a9SNate Lawson /*
1685d227204dSJohn Baldwin  * Determine the probe order for a given device.
1686b82ca9a9SNate Lawson  */
1687d227204dSJohn Baldwin static void
1688b82ca9a9SNate Lawson acpi_probe_order(ACPI_HANDLE handle, int *order)
168991233413SNate Lawson {
1690463e0f91SJohn Baldwin     ACPI_OBJECT_TYPE type;
169191233413SNate Lawson 
1692b82ca9a9SNate Lawson     /*
1693*b1f9b996SAndriy Gapon      * 1. CPUs
1694*b1f9b996SAndriy Gapon      * 2. I/O port and memory system resource holders
1695*b1f9b996SAndriy Gapon      * 3. Embedded controllers (to handle early accesses)
1696*b1f9b996SAndriy Gapon      * 4. PCI Link Devices
1697b82ca9a9SNate Lawson      */
1698463e0f91SJohn Baldwin     AcpiGetType(handle, &type);
1699aa835160SAndriy Gapon     if (type == ACPI_TYPE_PROCESSOR)
170091233413SNate Lawson 	*order = 1;
1701aa835160SAndriy Gapon     else if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02"))
170291233413SNate Lawson 	*order = 2;
1703aa835160SAndriy Gapon     else if (acpi_MatchHid(handle, "PNP0C09"))
1704b460c6f8SJohn Baldwin 	*order = 3;
1705aa835160SAndriy Gapon     else if (acpi_MatchHid(handle, "PNP0C0F"))
1706aa835160SAndriy Gapon 	*order = 4;
170791233413SNate Lawson }
170891233413SNate Lawson 
170915e32d5dSMike Smith /*
171015e32d5dSMike Smith  * Evaluate a child device and determine whether we might attach a device to
171115e32d5dSMike Smith  * it.
171215e32d5dSMike Smith  */
171315e32d5dSMike Smith static ACPI_STATUS
171415e32d5dSMike Smith acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
171515e32d5dSMike Smith {
171615e32d5dSMike Smith     ACPI_OBJECT_TYPE type;
1717858a52f4SMitsuru IWASAKI     ACPI_HANDLE h;
171833332dc2SNate Lawson     device_t bus, child;
1719da72d149SNate Lawson     int order;
172033332dc2SNate Lawson     char *handle_str, **search;
172133332dc2SNate Lawson     static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI_", "\\_SB_", NULL};
172215e32d5dSMike Smith 
1723b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
17240ae55423SMike Smith 
1725be2b1797SNate Lawson     /* Skip this device if we think we'll have trouble with it. */
17260ae55423SMike Smith     if (acpi_avoid(handle))
17270ae55423SMike Smith 	return_ACPI_STATUS (AE_OK);
17280ae55423SMike Smith 
172991233413SNate Lawson     bus = (device_t)context;
1730b53f2771SMike Smith     if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
173115e32d5dSMike Smith 	switch (type) {
173215e32d5dSMike Smith 	case ACPI_TYPE_DEVICE:
173315e32d5dSMike Smith 	case ACPI_TYPE_PROCESSOR:
173415e32d5dSMike Smith 	case ACPI_TYPE_THERMAL:
173515e32d5dSMike Smith 	case ACPI_TYPE_POWER:
17360ae55423SMike Smith 	    if (acpi_disabled("children"))
17370ae55423SMike Smith 		break;
1738be2b1797SNate Lawson 
173915e32d5dSMike Smith 	    /*
174033332dc2SNate Lawson 	     * Since we scan from \, be sure to skip system scope objects.
174133332dc2SNate Lawson 	     * At least \_SB and \_TZ are detected as devices (ACPI-CA bug?)
174233332dc2SNate Lawson 	     */
174333332dc2SNate Lawson 	    handle_str = acpi_name(handle);
174433332dc2SNate Lawson 	    for (search = scopes; *search != NULL; search++) {
174533332dc2SNate Lawson 		if (strcmp(handle_str, *search) == 0)
174633332dc2SNate Lawson 		    break;
174733332dc2SNate Lawson 	    }
174833332dc2SNate Lawson 	    if (*search != NULL)
174933332dc2SNate Lawson 		break;
175033332dc2SNate Lawson 
175133332dc2SNate Lawson 	    /*
1752463e0f91SJohn Baldwin 	     * Create a placeholder device for this node.  Sort the
1753463e0f91SJohn Baldwin 	     * placeholder so that the probe/attach passes will run
1754463e0f91SJohn Baldwin 	     * breadth-first.  Orders less than ACPI_DEV_BASE_ORDER
1755463e0f91SJohn Baldwin 	     * are reserved for special objects (i.e., system
1756*b1f9b996SAndriy Gapon 	     * resources).
175715e32d5dSMike Smith 	     */
175833332dc2SNate Lawson 	    ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1759d227204dSJohn Baldwin 	    order = level * 10 + 100;
1760da72d149SNate Lawson 	    acpi_probe_order(handle, &order);
176191233413SNate Lawson 	    child = BUS_ADD_CHILD(bus, order, NULL, -1);
1762bc0f2195SMike Smith 	    if (child == NULL)
1763bc0f2195SMike Smith 		break;
176459a890e6SNate Lawson 
176559a890e6SNate Lawson 	    /* Associate the handle with the device_t and vice versa. */
176615e32d5dSMike Smith 	    acpi_set_handle(child, handle);
176759a890e6SNate Lawson 	    AcpiAttachData(handle, acpi_fake_objhandler, child);
1768bc0f2195SMike Smith 
1769bc0f2195SMike Smith 	    /*
1770b519f9d6SMike Smith 	     * Check that the device is present.  If it's not present,
1771b519f9d6SMike Smith 	     * leave it disabled (so that we have a device_t attached to
1772b519f9d6SMike Smith 	     * the handle, but we don't probe it).
1773893f750aSNate Lawson 	     *
1774893f750aSNate Lawson 	     * XXX PCI link devices sometimes report "present" but not
1775893f750aSNate Lawson 	     * "functional" (i.e. if disabled).  Go ahead and probe them
1776893f750aSNate Lawson 	     * anyway since we may enable them later.
1777b519f9d6SMike Smith 	     */
1778858a52f4SMitsuru IWASAKI 	    if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1779858a52f4SMitsuru IWASAKI 		/* Never disable PCI link devices. */
1780858a52f4SMitsuru IWASAKI 		if (acpi_MatchHid(handle, "PNP0C0F"))
1781858a52f4SMitsuru IWASAKI 		    break;
1782858a52f4SMitsuru IWASAKI 		/*
1783858a52f4SMitsuru IWASAKI 		 * Docking stations should remain enabled since the system
1784858a52f4SMitsuru IWASAKI 		 * may be undocked at boot.
1785858a52f4SMitsuru IWASAKI 		 */
1786858a52f4SMitsuru IWASAKI 		if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
1787858a52f4SMitsuru IWASAKI 		    break;
1788858a52f4SMitsuru IWASAKI 
1789b519f9d6SMike Smith 		device_disable(child);
1790b519f9d6SMike Smith 		break;
1791b519f9d6SMike Smith 	    }
1792b519f9d6SMike Smith 
1793b519f9d6SMike Smith 	    /*
1794bc0f2195SMike Smith 	     * Get the device's resource settings and attach them.
1795bc0f2195SMike Smith 	     * Note that if the device has _PRS but no _CRS, we need
1796bc0f2195SMike Smith 	     * to decide when it's appropriate to try to configure the
1797bc0f2195SMike Smith 	     * device.  Ignore the return value here; it's OK for the
1798bc0f2195SMike Smith 	     * device not to have any resources.
1799bc0f2195SMike Smith 	     */
180072ad60adSNate Lawson 	    acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
18010ae55423SMike Smith 	    break;
180215e32d5dSMike Smith 	}
180315e32d5dSMike Smith     }
1804be2b1797SNate Lawson 
18050ae55423SMike Smith     return_ACPI_STATUS (AE_OK);
180615e32d5dSMike Smith }
180715e32d5dSMike Smith 
180859a890e6SNate Lawson /*
180959a890e6SNate Lawson  * AcpiAttachData() requires an object handler but never uses it.  This is a
181059a890e6SNate Lawson  * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
181159a890e6SNate Lawson  */
181259a890e6SNate Lawson void
181392488a57SJung-uk Kim acpi_fake_objhandler(ACPI_HANDLE h, void *data)
181459a890e6SNate Lawson {
181559a890e6SNate Lawson }
181659a890e6SNate Lawson 
181715e32d5dSMike Smith static void
181815e32d5dSMike Smith acpi_shutdown_final(void *arg, int howto)
181915e32d5dSMike Smith {
18202d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
1821d33f4987STakanori Watanabe     ACPI_STATUS status;
1822eeb3a05fSNate Lawson 
1823eeb3a05fSNate Lawson     /*
182480f0e4c2SNate Lawson      * XXX Shutdown code should only run on the BSP (cpuid 0).
182580f0e4c2SNate Lawson      * Some chipsets do not power off the system correctly if called from
182680f0e4c2SNate Lawson      * an AP.
1827eeb3a05fSNate Lawson      */
1828eeb3a05fSNate Lawson     if ((howto & RB_POWEROFF) != 0) {
1829904bf0c2SNate Lawson 	status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1830904bf0c2SNate Lawson 	if (ACPI_FAILURE(status)) {
18312d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
1832904bf0c2SNate Lawson 		AcpiFormatException(status));
1833904bf0c2SNate Lawson 	    return;
1834904bf0c2SNate Lawson 	}
18352d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev, "Powering system off\n");
183655398047SNate Lawson 	ACPI_DISABLE_IRQS();
1837865b8d0bSNate Lawson 	status = AcpiEnterSleepState(ACPI_STATE_S5);
18382d0c82e8SJung-uk Kim 	if (ACPI_FAILURE(status))
18392d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "power-off failed - %s\n",
18402d0c82e8SJung-uk Kim 		AcpiFormatException(status));
18412d0c82e8SJung-uk Kim 	else {
184215e32d5dSMike Smith 	    DELAY(1000000);
18432d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "power-off failed - timeout\n");
184415e32d5dSMike Smith 	}
18452be4e471SJung-uk Kim     } else if ((howto & RB_HALT) == 0 &&
18462be4e471SJung-uk Kim 	(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) &&
1847d1b16e18SNate Lawson 	sc->acpi_handle_reboot) {
1848d85e6785SNate Lawson 	/* Reboot using the reset register. */
1849129d3046SJung-uk Kim 	status = AcpiWrite(
18502be4e471SJung-uk Kim 	    AcpiGbl_FADT.ResetValue, &AcpiGbl_FADT.ResetRegister);
18512d0c82e8SJung-uk Kim 	if (ACPI_FAILURE(status))
18522d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "reset failed - %s\n",
18532d0c82e8SJung-uk Kim 		AcpiFormatException(status));
18542d0c82e8SJung-uk Kim 	else {
185587a500cdSNate Lawson 	    DELAY(1000000);
18562d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "reset failed - timeout\n");
185787a500cdSNate Lawson 	}
1858d85e6785SNate Lawson     } else if (sc->acpi_do_disable && panicstr == NULL) {
1859d85e6785SNate Lawson 	/*
1860d85e6785SNate Lawson 	 * Only disable ACPI if the user requested.  On some systems, writing
1861d85e6785SNate Lawson 	 * the disable value to SMI_CMD hangs the system.
1862d85e6785SNate Lawson 	 */
18632d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev, "Shutting down\n");
186480f0e4c2SNate Lawson 	AcpiTerminate();
186580f0e4c2SNate Lawson     }
186615e32d5dSMike Smith }
186715e32d5dSMike Smith 
186813d4f7baSMitsuru IWASAKI static void
186913d4f7baSMitsuru IWASAKI acpi_enable_fixed_events(struct acpi_softc *sc)
187013d4f7baSMitsuru IWASAKI {
187113d4f7baSMitsuru IWASAKI     static int	first_time = 1;
187213d4f7baSMitsuru IWASAKI 
187313d4f7baSMitsuru IWASAKI     /* Enable and clear fixed events and install handlers. */
18742be4e471SJung-uk Kim     if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
187559ddeb18SNate Lawson 	AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
187613d4f7baSMitsuru IWASAKI 	AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
187733febf93SNate Lawson 				     acpi_event_power_button_sleep, sc);
1878be2b1797SNate Lawson 	if (first_time)
18796c0e8467SNate Lawson 	    device_printf(sc->acpi_dev, "Power Button (fixed)\n");
188013d4f7baSMitsuru IWASAKI     }
18812be4e471SJung-uk Kim     if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
188259ddeb18SNate Lawson 	AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
188313d4f7baSMitsuru IWASAKI 	AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
188433febf93SNate Lawson 				     acpi_event_sleep_button_sleep, sc);
1885be2b1797SNate Lawson 	if (first_time)
18866c0e8467SNate Lawson 	    device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
188713d4f7baSMitsuru IWASAKI     }
188813d4f7baSMitsuru IWASAKI 
188913d4f7baSMitsuru IWASAKI     first_time = 0;
189013d4f7baSMitsuru IWASAKI }
189113d4f7baSMitsuru IWASAKI 
189215e32d5dSMike Smith /*
1893c5ba0be4SMike Smith  * Returns true if the device is actually present and should
1894c5ba0be4SMike Smith  * be attached to.  This requires the present, enabled, UI-visible
1895c5ba0be4SMike Smith  * and diagnostics-passed bits to be set.
1896c5ba0be4SMike Smith  */
1897c5ba0be4SMike Smith BOOLEAN
1898c5ba0be4SMike Smith acpi_DeviceIsPresent(device_t dev)
1899c5ba0be4SMike Smith {
19001e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
1901c5ba0be4SMike Smith     ACPI_HANDLE		h;
190292488a57SJung-uk Kim     BOOLEAN		present;
1903c5ba0be4SMike Smith 
190492488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
190592488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1906c5ba0be4SMike Smith 	return (FALSE);
1907be2b1797SNate Lawson 
1908be2b1797SNate Lawson     /* If no _STA method, must be present */
190992488a57SJung-uk Kim     present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
191092488a57SJung-uk Kim 	ACPI_DEVICE_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
1911be2b1797SNate Lawson 
191292488a57SJung-uk Kim     AcpiOsFree(devinfo);
191392488a57SJung-uk Kim     return (present);
1914c5ba0be4SMike Smith }
1915c5ba0be4SMike Smith 
1916c5ba0be4SMike Smith /*
1917b53f2771SMike Smith  * Returns true if the battery is actually present and inserted.
1918b53f2771SMike Smith  */
1919b53f2771SMike Smith BOOLEAN
1920b53f2771SMike Smith acpi_BatteryIsPresent(device_t dev)
1921b53f2771SMike Smith {
19221e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
1923b53f2771SMike Smith     ACPI_HANDLE		h;
192492488a57SJung-uk Kim     BOOLEAN		present;
1925b53f2771SMike Smith 
192692488a57SJung-uk Kim     if ((h = acpi_get_handle(dev)) == NULL ||
192792488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1928b53f2771SMike Smith 	return (FALSE);
1929be2b1797SNate Lawson 
1930be2b1797SNate Lawson     /* If no _STA method, must be present */
193192488a57SJung-uk Kim     present = (devinfo->Valid & ACPI_VALID_STA) == 0 ||
193292488a57SJung-uk Kim 	ACPI_BATTERY_PRESENT(devinfo->CurrentStatus) ? TRUE : FALSE;
1933be2b1797SNate Lawson 
193492488a57SJung-uk Kim     AcpiOsFree(devinfo);
193592488a57SJung-uk Kim     return (present);
1936b53f2771SMike Smith }
1937b53f2771SMike Smith 
1938b53f2771SMike Smith /*
193991233413SNate Lawson  * Match a HID string against a handle
194015e32d5dSMike Smith  */
19413c4c08dcSAlexander Motin BOOLEAN
1942ce619b2eSNate Lawson acpi_MatchHid(ACPI_HANDLE h, const char *hid)
194315e32d5dSMike Smith {
19441e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
194592488a57SJung-uk Kim     BOOLEAN		ret;
194692488a57SJung-uk Kim     int			i;
194792488a57SJung-uk Kim 
194892488a57SJung-uk Kim     if (hid == NULL || h == NULL ||
194992488a57SJung-uk Kim 	ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
195092488a57SJung-uk Kim 	return (FALSE);
195115e32d5dSMike Smith 
19521e4925e8SNate Lawson     ret = FALSE;
1953c59c9a8eSJohn Baldwin     if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
195492488a57SJung-uk Kim 	strcmp(hid, devinfo->HardwareId.String) == 0)
19551e4925e8SNate Lawson 	    ret = TRUE;
195692488a57SJung-uk Kim     else if ((devinfo->Valid & ACPI_VALID_CID) != 0)
195792488a57SJung-uk Kim 	for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
195892488a57SJung-uk Kim 	    if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
19591e4925e8SNate Lawson 		ret = TRUE;
19601e4925e8SNate Lawson 		break;
19611e4925e8SNate Lawson 	    }
19621e4925e8SNate Lawson 	}
1963be2b1797SNate Lawson 
196492488a57SJung-uk Kim     AcpiOsFree(devinfo);
19651e4925e8SNate Lawson     return (ret);
196615e32d5dSMike Smith }
196715e32d5dSMike Smith 
196815e32d5dSMike Smith /*
1969c5ba0be4SMike Smith  * Return the handle of a named object within our scope, ie. that of (parent)
1970c5ba0be4SMike Smith  * or one if its parents.
1971c5ba0be4SMike Smith  */
1972c5ba0be4SMike Smith ACPI_STATUS
1973c5ba0be4SMike Smith acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1974c5ba0be4SMike Smith {
1975c5ba0be4SMike Smith     ACPI_HANDLE		r;
1976c5ba0be4SMike Smith     ACPI_STATUS		status;
1977c5ba0be4SMike Smith 
1978be2b1797SNate Lawson     /* Walk back up the tree to the root */
1979c5ba0be4SMike Smith     for (;;) {
1980be2b1797SNate Lawson 	status = AcpiGetHandle(parent, path, &r);
1981be2b1797SNate Lawson 	if (ACPI_SUCCESS(status)) {
1982c5ba0be4SMike Smith 	    *result = r;
1983c5ba0be4SMike Smith 	    return (AE_OK);
1984c5ba0be4SMike Smith 	}
1985bee4aa4aSNate Lawson 	/* XXX Return error here? */
1986c5ba0be4SMike Smith 	if (status != AE_NOT_FOUND)
1987c5ba0be4SMike Smith 	    return (AE_OK);
1988b53f2771SMike Smith 	if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1989c5ba0be4SMike Smith 	    return (AE_NOT_FOUND);
1990c5ba0be4SMike Smith 	parent = r;
1991c5ba0be4SMike Smith     }
1992c5ba0be4SMike Smith }
1993c5ba0be4SMike Smith 
1994eea17c34SNate Lawson /* Find the difference between two PM tick counts. */
1995eea17c34SNate Lawson uint32_t
1996eea17c34SNate Lawson acpi_TimerDelta(uint32_t end, uint32_t start)
1997eea17c34SNate Lawson {
1998eea17c34SNate Lawson     uint32_t delta;
1999eea17c34SNate Lawson 
2000eea17c34SNate Lawson     if (end >= start)
2001eea17c34SNate Lawson 	delta = end - start;
20022be4e471SJung-uk Kim     else if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
2003eea17c34SNate Lawson 	delta = ((0xFFFFFFFF - start) + end + 1);
20042be4e471SJung-uk Kim     else
20052be4e471SJung-uk Kim 	delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
2006eea17c34SNate Lawson     return (delta);
2007eea17c34SNate Lawson }
2008eea17c34SNate Lawson 
2009c5ba0be4SMike Smith /*
2010c5ba0be4SMike Smith  * Allocate a buffer with a preset data size.
2011c5ba0be4SMike Smith  */
2012c5ba0be4SMike Smith ACPI_BUFFER *
2013c5ba0be4SMike Smith acpi_AllocBuffer(int size)
2014c5ba0be4SMike Smith {
2015c5ba0be4SMike Smith     ACPI_BUFFER	*buf;
2016c5ba0be4SMike Smith 
2017c5ba0be4SMike Smith     if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
2018c5ba0be4SMike Smith 	return (NULL);
2019c5ba0be4SMike Smith     buf->Length = size;
2020c5ba0be4SMike Smith     buf->Pointer = (void *)(buf + 1);
2021c5ba0be4SMike Smith     return (buf);
2022c5ba0be4SMike Smith }
2023c5ba0be4SMike Smith 
2024c310653eSNate Lawson ACPI_STATUS
2025cc58e4eeSNate Lawson acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
2026c310653eSNate Lawson {
2027c310653eSNate Lawson     ACPI_OBJECT arg1;
2028c310653eSNate Lawson     ACPI_OBJECT_LIST args;
2029c310653eSNate Lawson 
2030c310653eSNate Lawson     arg1.Type = ACPI_TYPE_INTEGER;
2031c310653eSNate Lawson     arg1.Integer.Value = number;
2032c310653eSNate Lawson     args.Count = 1;
2033c310653eSNate Lawson     args.Pointer = &arg1;
2034c310653eSNate Lawson 
2035c310653eSNate Lawson     return (AcpiEvaluateObject(handle, path, &args, NULL));
2036c310653eSNate Lawson }
2037c310653eSNate Lawson 
2038c5ba0be4SMike Smith /*
2039c5ba0be4SMike Smith  * Evaluate a path that should return an integer.
2040c5ba0be4SMike Smith  */
2041c5ba0be4SMike Smith ACPI_STATUS
2042cc58e4eeSNate Lawson acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
2043c5ba0be4SMike Smith {
2044be2b1797SNate Lawson     ACPI_STATUS	status;
2045c5ba0be4SMike Smith     ACPI_BUFFER	buf;
2046c573e654SMitsuru IWASAKI     ACPI_OBJECT	param;
2047c5ba0be4SMike Smith 
2048c5ba0be4SMike Smith     if (handle == NULL)
2049c5ba0be4SMike Smith 	handle = ACPI_ROOT_OBJECT;
20500c7da7acSJohn Baldwin 
20510c7da7acSJohn Baldwin     /*
20520c7da7acSJohn Baldwin      * Assume that what we've been pointed at is an Integer object, or
20530c7da7acSJohn Baldwin      * a method that will return an Integer.
20540c7da7acSJohn Baldwin      */
2055c5ba0be4SMike Smith     buf.Pointer = &param;
2056c5ba0be4SMike Smith     buf.Length = sizeof(param);
2057be2b1797SNate Lawson     status = AcpiEvaluateObject(handle, path, NULL, &buf);
2058be2b1797SNate Lawson     if (ACPI_SUCCESS(status)) {
2059be2b1797SNate Lawson 	if (param.Type == ACPI_TYPE_INTEGER)
2060c5ba0be4SMike Smith 	    *number = param.Integer.Value;
2061be2b1797SNate Lawson 	else
2062be2b1797SNate Lawson 	    status = AE_TYPE;
2063c5ba0be4SMike Smith     }
20640c7da7acSJohn Baldwin 
20650c7da7acSJohn Baldwin     /*
20660c7da7acSJohn Baldwin      * In some applications, a method that's expected to return an Integer
20670c7da7acSJohn Baldwin      * may instead return a Buffer (probably to simplify some internal
20680c7da7acSJohn Baldwin      * arithmetic).  We'll try to fetch whatever it is, and if it's a Buffer,
20690c7da7acSJohn Baldwin      * convert it into an Integer as best we can.
20700c7da7acSJohn Baldwin      *
20710c7da7acSJohn Baldwin      * This is a hack.
20720c7da7acSJohn Baldwin      */
2073be2b1797SNate Lawson     if (status == AE_BUFFER_OVERFLOW) {
2074b53f2771SMike Smith 	if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
2075be2b1797SNate Lawson 	    status = AE_NO_MEMORY;
20760c7da7acSJohn Baldwin 	} else {
2077be2b1797SNate Lawson 	    status = AcpiEvaluateObject(handle, path, NULL, &buf);
2078be2b1797SNate Lawson 	    if (ACPI_SUCCESS(status))
2079be2b1797SNate Lawson 		status = acpi_ConvertBufferToInteger(&buf, number);
20800c7da7acSJohn Baldwin 	    AcpiOsFree(buf.Pointer);
20810c7da7acSJohn Baldwin 	}
2082f97739daSNate Lawson     }
2083be2b1797SNate Lawson     return (status);
2084c5ba0be4SMike Smith }
2085c5ba0be4SMike Smith 
2086c573e654SMitsuru IWASAKI ACPI_STATUS
2087cc58e4eeSNate Lawson acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2088c573e654SMitsuru IWASAKI {
2089c573e654SMitsuru IWASAKI     ACPI_OBJECT	*p;
2090dba55fa2SNate Lawson     UINT8	*val;
2091c573e654SMitsuru IWASAKI     int		i;
2092c573e654SMitsuru IWASAKI 
2093c573e654SMitsuru IWASAKI     p = (ACPI_OBJECT *)bufp->Pointer;
2094c573e654SMitsuru IWASAKI     if (p->Type == ACPI_TYPE_INTEGER) {
2095c573e654SMitsuru IWASAKI 	*number = p->Integer.Value;
2096c573e654SMitsuru IWASAKI 	return (AE_OK);
2097c573e654SMitsuru IWASAKI     }
2098c573e654SMitsuru IWASAKI     if (p->Type != ACPI_TYPE_BUFFER)
2099c573e654SMitsuru IWASAKI 	return (AE_TYPE);
2100c573e654SMitsuru IWASAKI     if (p->Buffer.Length > sizeof(int))
2101c573e654SMitsuru IWASAKI 	return (AE_BAD_DATA);
2102be2b1797SNate Lawson 
2103c573e654SMitsuru IWASAKI     *number = 0;
2104dba55fa2SNate Lawson     val = p->Buffer.Pointer;
2105c573e654SMitsuru IWASAKI     for (i = 0; i < p->Buffer.Length; i++)
2106dba55fa2SNate Lawson 	*number += val[i] << (i * 8);
2107c573e654SMitsuru IWASAKI     return (AE_OK);
2108c573e654SMitsuru IWASAKI }
2109c573e654SMitsuru IWASAKI 
2110c5ba0be4SMike Smith /*
2111c5ba0be4SMike Smith  * Iterate over the elements of an a package object, calling the supplied
2112c5ba0be4SMike Smith  * function for each element.
2113c5ba0be4SMike Smith  *
2114c5ba0be4SMike Smith  * XXX possible enhancement might be to abort traversal on error.
2115c5ba0be4SMike Smith  */
2116c5ba0be4SMike Smith ACPI_STATUS
2117be2b1797SNate Lawson acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2118be2b1797SNate Lawson 	void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2119c5ba0be4SMike Smith {
2120c5ba0be4SMike Smith     ACPI_OBJECT	*comp;
2121c5ba0be4SMike Smith     int		i;
2122c5ba0be4SMike Smith 
2123be2b1797SNate Lawson     if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2124c5ba0be4SMike Smith 	return (AE_BAD_PARAMETER);
2125c5ba0be4SMike Smith 
2126be2b1797SNate Lawson     /* Iterate over components */
2127be2b1797SNate Lawson     i = 0;
2128be2b1797SNate Lawson     comp = pkg->Package.Elements;
2129be2b1797SNate Lawson     for (; i < pkg->Package.Count; i++, comp++)
2130c5ba0be4SMike Smith 	func(comp, arg);
2131c5ba0be4SMike Smith 
2132c5ba0be4SMike Smith     return (AE_OK);
2133c5ba0be4SMike Smith }
2134c5ba0be4SMike Smith 
21356f69255bSMike Smith /*
21366f69255bSMike Smith  * Find the (index)th resource object in a set.
21376f69255bSMike Smith  */
21386f69255bSMike Smith ACPI_STATUS
21396d63101aSMike Smith acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
21406f69255bSMike Smith {
21416d63101aSMike Smith     ACPI_RESOURCE	*rp;
21426f69255bSMike Smith     int			i;
21436f69255bSMike Smith 
21446d63101aSMike Smith     rp = (ACPI_RESOURCE *)buf->Pointer;
21456f69255bSMike Smith     i = index;
21466d63101aSMike Smith     while (i-- > 0) {
2147be2b1797SNate Lawson 	/* Range check */
21486d63101aSMike Smith 	if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
21496f69255bSMike Smith 	    return (AE_BAD_PARAMETER);
2150be2b1797SNate Lawson 
2151be2b1797SNate Lawson 	/* Check for terminator */
2152e8d472a7SJung-uk Kim 	if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
21536d63101aSMike Smith 	    return (AE_NOT_FOUND);
2154abcbc5bcSNate Lawson 	rp = ACPI_NEXT_RESOURCE(rp);
21556f69255bSMike Smith     }
21566f69255bSMike Smith     if (resp != NULL)
21576d63101aSMike Smith 	*resp = rp;
2158be2b1797SNate Lawson 
21596d63101aSMike Smith     return (AE_OK);
21606d63101aSMike Smith }
21616d63101aSMike Smith 
21626d63101aSMike Smith /*
21636d63101aSMike Smith  * Append an ACPI_RESOURCE to an ACPI_BUFFER.
21646d63101aSMike Smith  *
21656d63101aSMike Smith  * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
21666d63101aSMike Smith  * provided to contain it.  If the ACPI_BUFFER is empty, allocate a sensible
21676d63101aSMike Smith  * backing block.  If the ACPI_RESOURCE is NULL, return an empty set of
21686d63101aSMike Smith  * resources.
21696d63101aSMike Smith  */
21706d63101aSMike Smith #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE	512
21716d63101aSMike Smith 
21726d63101aSMike Smith ACPI_STATUS
21736d63101aSMike Smith acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
21746d63101aSMike Smith {
21756d63101aSMike Smith     ACPI_RESOURCE	*rp;
21766d63101aSMike Smith     void		*newp;
21776d63101aSMike Smith 
2178be2b1797SNate Lawson     /* Initialise the buffer if necessary. */
21796d63101aSMike Smith     if (buf->Pointer == NULL) {
21806d63101aSMike Smith 	buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
21816d63101aSMike Smith 	if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
21826d63101aSMike Smith 	    return (AE_NO_MEMORY);
21836d63101aSMike Smith 	rp = (ACPI_RESOURCE *)buf->Pointer;
2184e8d472a7SJung-uk Kim 	rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
21856d63101aSMike Smith 	rp->Length = 0;
21866d63101aSMike Smith     }
21876d63101aSMike Smith     if (res == NULL)
21886d63101aSMike Smith 	return (AE_OK);
21896d63101aSMike Smith 
21906d63101aSMike Smith     /*
21916d63101aSMike Smith      * Scan the current buffer looking for the terminator.
21926d63101aSMike Smith      * This will either find the terminator or hit the end
21936d63101aSMike Smith      * of the buffer and return an error.
21946d63101aSMike Smith      */
21956d63101aSMike Smith     rp = (ACPI_RESOURCE *)buf->Pointer;
21966d63101aSMike Smith     for (;;) {
2197be2b1797SNate Lawson 	/* Range check, don't go outside the buffer */
21986d63101aSMike Smith 	if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
21996d63101aSMike Smith 	    return (AE_BAD_PARAMETER);
2200e8d472a7SJung-uk Kim 	if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
22016d63101aSMike Smith 	    break;
2202abcbc5bcSNate Lawson 	rp = ACPI_NEXT_RESOURCE(rp);
22036d63101aSMike Smith     }
22046d63101aSMike Smith 
22056d63101aSMike Smith     /*
22066d63101aSMike Smith      * Check the size of the buffer and expand if required.
22076d63101aSMike Smith      *
22086d63101aSMike Smith      * Required size is:
22096d63101aSMike Smith      *	size of existing resources before terminator +
22106d63101aSMike Smith      *	size of new resource and header +
22116d63101aSMike Smith      * 	size of terminator.
22126d63101aSMike Smith      *
22136d63101aSMike Smith      * Note that this loop should really only run once, unless
22146d63101aSMike Smith      * for some reason we are stuffing a *really* huge resource.
22156d63101aSMike Smith      */
22166d63101aSMike Smith     while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
2217e8d472a7SJung-uk Kim 	    res->Length + ACPI_RS_SIZE_NO_DATA +
2218e8d472a7SJung-uk Kim 	    ACPI_RS_SIZE_MIN) >= buf->Length) {
22196d63101aSMike Smith 	if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
22206d63101aSMike Smith 	    return (AE_NO_MEMORY);
22216d63101aSMike Smith 	bcopy(buf->Pointer, newp, buf->Length);
2222a692219dSMike Smith 	rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2223a692219dSMike Smith 			       ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
22246d63101aSMike Smith 	AcpiOsFree(buf->Pointer);
22256d63101aSMike Smith 	buf->Pointer = newp;
22266d63101aSMike Smith 	buf->Length += buf->Length;
22276d63101aSMike Smith     }
22286d63101aSMike Smith 
2229be2b1797SNate Lawson     /* Insert the new resource. */
2230e8d472a7SJung-uk Kim     bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
22316d63101aSMike Smith 
2232be2b1797SNate Lawson     /* And add the terminator. */
2233abcbc5bcSNate Lawson     rp = ACPI_NEXT_RESOURCE(rp);
2234e8d472a7SJung-uk Kim     rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
22356d63101aSMike Smith     rp->Length = 0;
22366d63101aSMike Smith 
22376f69255bSMike Smith     return (AE_OK);
22386f69255bSMike Smith }
2239c5ba0be4SMike Smith 
2240da14ac9fSJohn Baldwin /*
2241da14ac9fSJohn Baldwin  * Set interrupt model.
2242da14ac9fSJohn Baldwin  */
2243da14ac9fSJohn Baldwin ACPI_STATUS
2244da14ac9fSJohn Baldwin acpi_SetIntrModel(int model)
2245da14ac9fSJohn Baldwin {
2246da14ac9fSJohn Baldwin 
2247c310653eSNate Lawson     return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2248da14ac9fSJohn Baldwin }
2249da14ac9fSJohn Baldwin 
225000a30448SNate Lawson /*
2251d95e7f5aSJohn Baldwin  * Walk subtables of a table and call a callback routine for each
2252d95e7f5aSJohn Baldwin  * subtable.  The caller should provide the first subtable and a
2253d95e7f5aSJohn Baldwin  * pointer to the end of the table.  This can be used to walk tables
2254d95e7f5aSJohn Baldwin  * such as MADT and SRAT that use subtable entries.
2255d95e7f5aSJohn Baldwin  */
2256d95e7f5aSJohn Baldwin void
2257d95e7f5aSJohn Baldwin acpi_walk_subtables(void *first, void *end, acpi_subtable_handler *handler,
2258d95e7f5aSJohn Baldwin     void *arg)
2259d95e7f5aSJohn Baldwin {
2260d95e7f5aSJohn Baldwin     ACPI_SUBTABLE_HEADER *entry;
2261d95e7f5aSJohn Baldwin 
2262d95e7f5aSJohn Baldwin     for (entry = first; (void *)entry < end; ) {
2263d95e7f5aSJohn Baldwin 	/* Avoid an infinite loop if we hit a bogus entry. */
2264d95e7f5aSJohn Baldwin 	if (entry->Length < sizeof(ACPI_SUBTABLE_HEADER))
2265d95e7f5aSJohn Baldwin 	    return;
2266d95e7f5aSJohn Baldwin 
2267d95e7f5aSJohn Baldwin 	handler(entry, arg);
2268d95e7f5aSJohn Baldwin 	entry = ACPI_ADD_PTR(ACPI_SUBTABLE_HEADER, entry, entry->Length);
2269d95e7f5aSJohn Baldwin     }
2270d95e7f5aSJohn Baldwin }
2271d95e7f5aSJohn Baldwin 
2272d95e7f5aSJohn Baldwin /*
227300a30448SNate Lawson  * DEPRECATED.  This interface has serious deficiencies and will be
227400a30448SNate Lawson  * removed.
227500a30448SNate Lawson  *
227600a30448SNate Lawson  * Immediately enter the sleep state.  In the old model, acpiconf(8) ran
227700a30448SNate Lawson  * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
227800a30448SNate Lawson  */
227900a30448SNate Lawson ACPI_STATUS
228000a30448SNate Lawson acpi_SetSleepState(struct acpi_softc *sc, int state)
228100a30448SNate Lawson {
228200a30448SNate Lawson     static int once;
228300a30448SNate Lawson 
228400a30448SNate Lawson     if (!once) {
22852d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
228600a30448SNate Lawson "warning: acpi_SetSleepState() deprecated, need to update your software\n");
228700a30448SNate Lawson 	once = 1;
228800a30448SNate Lawson     }
228900a30448SNate Lawson     return (acpi_EnterSleepState(sc, state));
229000a30448SNate Lawson }
229100a30448SNate Lawson 
2292c66d2b38SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
229300a30448SNate Lawson static void
229400a30448SNate Lawson acpi_sleep_force(void *arg)
229500a30448SNate Lawson {
22962d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
229700a30448SNate Lawson 
22982d0c82e8SJung-uk Kim     device_printf(sc->acpi_dev,
22992d0c82e8SJung-uk Kim 	"suspend request timed out, forcing sleep now\n");
230000a30448SNate Lawson     if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
23012d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev, "force sleep state S%d failed\n",
23022d0c82e8SJung-uk Kim 	    sc->acpi_next_sstate);
230300a30448SNate Lawson }
2304c66d2b38SJung-uk Kim #endif
230500a30448SNate Lawson 
230600a30448SNate Lawson /*
230700a30448SNate Lawson  * Request that the system enter the given suspend state.  All /dev/apm
230800a30448SNate Lawson  * devices and devd(8) will be notified.  Userland then has a chance to
230900a30448SNate Lawson  * save state and acknowledge the request.  The system sleeps once all
231000a30448SNate Lawson  * acks are in.
231100a30448SNate Lawson  */
231200a30448SNate Lawson int
231300a30448SNate Lawson acpi_ReqSleepState(struct acpi_softc *sc, int state)
231400a30448SNate Lawson {
231571f99e63SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
231600a30448SNate Lawson     struct apm_clone_data *clone;
2317337744d9SJung-uk Kim     ACPI_STATUS status;
231800a30448SNate Lawson 
2319a0e73a12SJung-uk Kim     if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
232000a30448SNate Lawson 	return (EINVAL);
2321a0e73a12SJung-uk Kim     if (!acpi_sleep_states[state])
2322a0e73a12SJung-uk Kim 	return (EOPNOTSUPP);
232300a30448SNate Lawson 
2324337744d9SJung-uk Kim     ACPI_LOCK(acpi);
232500a30448SNate Lawson 
232600a30448SNate Lawson     /* If a suspend request is already in progress, just return. */
232700a30448SNate Lawson     if (sc->acpi_next_sstate != 0) {
232800a30448SNate Lawson     	ACPI_UNLOCK(acpi);
232900a30448SNate Lawson 	return (0);
233000a30448SNate Lawson     }
233100a30448SNate Lawson 
2332337744d9SJung-uk Kim     /* S5 (soft-off) should be entered directly with no waiting. */
2333337744d9SJung-uk Kim     if (state == ACPI_STATE_S5) {
2334337744d9SJung-uk Kim     	ACPI_UNLOCK(acpi);
2335337744d9SJung-uk Kim 	status = acpi_EnterSleepState(sc, state);
2336337744d9SJung-uk Kim 	return (ACPI_SUCCESS(status) ? 0 : ENXIO);
2337337744d9SJung-uk Kim     }
2338337744d9SJung-uk Kim 
233900a30448SNate Lawson     /* Record the pending state and notify all apm devices. */
234000a30448SNate Lawson     sc->acpi_next_sstate = state;
234100a30448SNate Lawson     STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
234200a30448SNate Lawson 	clone->notify_status = APM_EV_NONE;
234300a30448SNate Lawson 	if ((clone->flags & ACPI_EVF_DEVD) == 0) {
234400a30448SNate Lawson 	    selwakeuppri(&clone->sel_read, PZERO);
2345374d9c4dSJohn Baldwin 	    KNOTE_LOCKED(&clone->sel_read.si_note, 0);
234600a30448SNate Lawson 	}
234700a30448SNate Lawson     }
234800a30448SNate Lawson 
23490c26519eSMitsuru IWASAKI     /* If devd(8) is not running, immediately enter the sleep state. */
2350d42f0ad8SJung-uk Kim     if (!devctl_process_running()) {
23510c26519eSMitsuru IWASAKI 	ACPI_UNLOCK(acpi);
2352337744d9SJung-uk Kim 	status = acpi_EnterSleepState(sc, state);
2353337744d9SJung-uk Kim 	return (ACPI_SUCCESS(status) ? 0 : ENXIO);
23540c26519eSMitsuru IWASAKI     }
23550c26519eSMitsuru IWASAKI 
235600a30448SNate Lawson     /*
235700a30448SNate Lawson      * Set a timeout to fire if userland doesn't ack the suspend request
235800a30448SNate Lawson      * in time.  This way we still eventually go to sleep if we were
235900a30448SNate Lawson      * overheating or running low on battery, even if userland is hung.
236000a30448SNate Lawson      * We cancel this timeout once all userland acks are in or the
236100a30448SNate Lawson      * suspend request is aborted.
236200a30448SNate Lawson      */
236300a30448SNate Lawson     callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
236400a30448SNate Lawson     ACPI_UNLOCK(acpi);
2365d42f0ad8SJung-uk Kim 
2366d42f0ad8SJung-uk Kim     /* Now notify devd(8) also. */
2367d42f0ad8SJung-uk Kim     acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2368d42f0ad8SJung-uk Kim 
236900a30448SNate Lawson     return (0);
2370c66d2b38SJung-uk Kim #else
2371c66d2b38SJung-uk Kim     /* This platform does not support acpi suspend/resume. */
2372c66d2b38SJung-uk Kim     return (EOPNOTSUPP);
2373c66d2b38SJung-uk Kim #endif
237400a30448SNate Lawson }
237500a30448SNate Lawson 
237600a30448SNate Lawson /*
237700a30448SNate Lawson  * Acknowledge (or reject) a pending sleep state.  The caller has
237800a30448SNate Lawson  * prepared for suspend and is now ready for it to proceed.  If the
237900a30448SNate Lawson  * error argument is non-zero, it indicates suspend should be cancelled
238000a30448SNate Lawson  * and gives an errno value describing why.  Once all votes are in,
238100a30448SNate Lawson  * we suspend the system.
238200a30448SNate Lawson  */
238300a30448SNate Lawson int
238400a30448SNate Lawson acpi_AckSleepState(struct apm_clone_data *clone, int error)
238500a30448SNate Lawson {
2386c66d2b38SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
238700a30448SNate Lawson     struct acpi_softc *sc;
238800a30448SNate Lawson     int ret, sleeping;
238900a30448SNate Lawson 
239000a30448SNate Lawson     /* If no pending sleep state, return an error. */
239100a30448SNate Lawson     ACPI_LOCK(acpi);
239200a30448SNate Lawson     sc = clone->acpi_sc;
239300a30448SNate Lawson     if (sc->acpi_next_sstate == 0) {
239400a30448SNate Lawson     	ACPI_UNLOCK(acpi);
239500a30448SNate Lawson 	return (ENXIO);
239600a30448SNate Lawson     }
239700a30448SNate Lawson 
239800a30448SNate Lawson     /* Caller wants to abort suspend process. */
239900a30448SNate Lawson     if (error) {
240000a30448SNate Lawson 	sc->acpi_next_sstate = 0;
240100a30448SNate Lawson 	callout_stop(&sc->susp_force_to);
24022d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
24032d0c82e8SJung-uk Kim 	    "listener on %s cancelled the pending suspend\n",
240400a30448SNate Lawson 	    devtoname(clone->cdev));
240500a30448SNate Lawson     	ACPI_UNLOCK(acpi);
240600a30448SNate Lawson 	return (0);
240700a30448SNate Lawson     }
240800a30448SNate Lawson 
240900a30448SNate Lawson     /*
241000a30448SNate Lawson      * Mark this device as acking the suspend request.  Then, walk through
241100a30448SNate Lawson      * all devices, seeing if they agree yet.  We only count devices that
241200a30448SNate Lawson      * are writable since read-only devices couldn't ack the request.
241300a30448SNate Lawson      */
241400a30448SNate Lawson     sleeping = TRUE;
2415c66d2b38SJung-uk Kim     clone->notify_status = APM_EV_ACKED;
241600a30448SNate Lawson     STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
241700a30448SNate Lawson 	if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
241800a30448SNate Lawson 	    clone->notify_status != APM_EV_ACKED) {
241900a30448SNate Lawson 	    sleeping = FALSE;
242000a30448SNate Lawson 	    break;
242100a30448SNate Lawson 	}
242200a30448SNate Lawson     }
242300a30448SNate Lawson 
242400a30448SNate Lawson     /* If all devices have voted "yes", we will suspend now. */
242500a30448SNate Lawson     if (sleeping)
242600a30448SNate Lawson 	callout_stop(&sc->susp_force_to);
242700a30448SNate Lawson     ACPI_UNLOCK(acpi);
242800a30448SNate Lawson     ret = 0;
242900a30448SNate Lawson     if (sleeping) {
243000a30448SNate Lawson 	if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
243100a30448SNate Lawson 		ret = ENODEV;
243200a30448SNate Lawson     }
243300a30448SNate Lawson     return (ret);
2434c66d2b38SJung-uk Kim #else
2435c66d2b38SJung-uk Kim     /* This platform does not support acpi suspend/resume. */
2436c66d2b38SJung-uk Kim     return (EOPNOTSUPP);
2437c66d2b38SJung-uk Kim #endif
243800a30448SNate Lawson }
243900a30448SNate Lawson 
2440ece50487SMitsuru IWASAKI static void
2441ece50487SMitsuru IWASAKI acpi_sleep_enable(void *arg)
2442ece50487SMitsuru IWASAKI {
2443d42f0ad8SJung-uk Kim     struct acpi_softc	*sc = (struct acpi_softc *)arg;
2444bee4aa4aSNate Lawson 
2445a0e73a12SJung-uk Kim     /* Reschedule if the system is not fully up and running. */
2446a0e73a12SJung-uk Kim     if (!AcpiGbl_SystemAwakeAndRunning) {
2447a0e73a12SJung-uk Kim 	timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME);
2448a0e73a12SJung-uk Kim 	return;
2449a0e73a12SJung-uk Kim     }
2450a0e73a12SJung-uk Kim 
2451d42f0ad8SJung-uk Kim     ACPI_LOCK(acpi);
2452a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = FALSE;
2453d42f0ad8SJung-uk Kim     ACPI_UNLOCK(acpi);
2454d42f0ad8SJung-uk Kim }
2455d42f0ad8SJung-uk Kim 
2456d42f0ad8SJung-uk Kim static ACPI_STATUS
2457d42f0ad8SJung-uk Kim acpi_sleep_disable(struct acpi_softc *sc)
2458d42f0ad8SJung-uk Kim {
2459d42f0ad8SJung-uk Kim     ACPI_STATUS		status;
2460d42f0ad8SJung-uk Kim 
2461a0e73a12SJung-uk Kim     /* Fail if the system is not fully up and running. */
2462a0e73a12SJung-uk Kim     if (!AcpiGbl_SystemAwakeAndRunning)
2463a0e73a12SJung-uk Kim 	return (AE_ERROR);
2464a0e73a12SJung-uk Kim 
2465d42f0ad8SJung-uk Kim     ACPI_LOCK(acpi);
2466d42f0ad8SJung-uk Kim     status = sc->acpi_sleep_disabled ? AE_ERROR : AE_OK;
2467a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = TRUE;
2468d42f0ad8SJung-uk Kim     ACPI_UNLOCK(acpi);
2469d42f0ad8SJung-uk Kim 
2470d42f0ad8SJung-uk Kim     return (status);
2471ece50487SMitsuru IWASAKI }
2472c30382dfSMitsuru IWASAKI 
247315e2f34fSNate Lawson enum acpi_sleep_state {
247415e2f34fSNate Lawson     ACPI_SS_NONE,
247515e2f34fSNate Lawson     ACPI_SS_GPE_SET,
247615e2f34fSNate Lawson     ACPI_SS_DEV_SUSPEND,
247715e2f34fSNate Lawson     ACPI_SS_SLP_PREP,
247815e2f34fSNate Lawson     ACPI_SS_SLEPT,
247915e2f34fSNate Lawson };
248015e2f34fSNate Lawson 
248115e32d5dSMike Smith /*
248200a30448SNate Lawson  * Enter the desired system sleep state.
248315e32d5dSMike Smith  *
2484be2b1797SNate Lawson  * Currently we support S1-S5 but S4 is only S4BIOS
248515e32d5dSMike Smith  */
248600a30448SNate Lawson static ACPI_STATUS
248700a30448SNate Lawson acpi_EnterSleepState(struct acpi_softc *sc, int state)
248815e32d5dSMike Smith {
248915e2f34fSNate Lawson     ACPI_STATUS	status;
249015e2f34fSNate Lawson     enum acpi_sleep_state slp_state;
249115e32d5dSMike Smith 
2492b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
24930ae55423SMike Smith 
2494a0e73a12SJung-uk Kim     if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
249533c70d41SAndriy Gapon 	return_ACPI_STATUS (AE_BAD_PARAMETER);
2496a0e73a12SJung-uk Kim     if (!acpi_sleep_states[state]) {
2497a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev, "Sleep state S%d not supported by BIOS\n",
2498a0e73a12SJung-uk Kim 	    state);
2499a0e73a12SJung-uk Kim 	return (AE_SUPPORT);
2500a0e73a12SJung-uk Kim     }
2501a0e73a12SJung-uk Kim 
2502a0e73a12SJung-uk Kim     /* Re-entry once we're suspending is not allowed. */
2503a0e73a12SJung-uk Kim     status = acpi_sleep_disable(sc);
2504a0e73a12SJung-uk Kim     if (ACPI_FAILURE(status)) {
2505a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev,
2506a0e73a12SJung-uk Kim 	    "suspend request ignored (not ready yet)\n");
2507a0e73a12SJung-uk Kim 	return (status);
2508a0e73a12SJung-uk Kim     }
250933c70d41SAndriy Gapon 
251033c70d41SAndriy Gapon     if (state == ACPI_STATE_S5) {
251133c70d41SAndriy Gapon 	/*
251233c70d41SAndriy Gapon 	 * Shut down cleanly and power off.  This will call us back through the
251333c70d41SAndriy Gapon 	 * shutdown handlers.
251433c70d41SAndriy Gapon 	 */
251533c70d41SAndriy Gapon 	shutdown_nice(RB_POWEROFF);
251633c70d41SAndriy Gapon 	return_ACPI_STATUS (AE_OK);
251733c70d41SAndriy Gapon     }
251833c70d41SAndriy Gapon 
251936a483bbSJung-uk Kim     if (smp_started) {
2520c66d2b38SJung-uk Kim 	thread_lock(curthread);
2521c66d2b38SJung-uk Kim 	sched_bind(curthread, 0);
2522c66d2b38SJung-uk Kim 	thread_unlock(curthread);
252336a483bbSJung-uk Kim     }
2524c66d2b38SJung-uk Kim 
2525a56fe095SJohn Baldwin     /*
2526a56fe095SJohn Baldwin      * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2527a56fe095SJohn Baldwin      * drivers need this.
2528a56fe095SJohn Baldwin      */
2529a56fe095SJohn Baldwin     mtx_lock(&Giant);
2530c66d2b38SJung-uk Kim 
253115e2f34fSNate Lawson     slp_state = ACPI_SS_NONE;
253256d8cb57SMitsuru IWASAKI 
2533a1fccb47SMitsuru IWASAKI     sc->acpi_sstate = state;
2534a1fccb47SMitsuru IWASAKI 
2535d4b9ff91SNate Lawson     /* Enable any GPEs as appropriate and requested by the user. */
2536d4b9ff91SNate Lawson     acpi_wake_prep_walk(state);
253715e2f34fSNate Lawson     slp_state = ACPI_SS_GPE_SET;
2538e8b4d56eSNate Lawson 
253915e32d5dSMike Smith     /*
2540c7f88fc3SNate Lawson      * Inform all devices that we are going to sleep.  If at least one
2541c7f88fc3SNate Lawson      * device fails, DEVICE_SUSPEND() automatically resumes the tree.
254215e32d5dSMike Smith      *
2543c7f88fc3SNate Lawson      * XXX Note that a better two-pass approach with a 'veto' pass
2544c7f88fc3SNate Lawson      * followed by a "real thing" pass would be better, but the current
2545c7f88fc3SNate Lawson      * bus interface does not provide for this.
254615e32d5dSMike Smith      */
254715e2f34fSNate Lawson     if (DEVICE_SUSPEND(root_bus) != 0) {
254815e2f34fSNate Lawson 	device_printf(sc->acpi_dev, "device_suspend failed\n");
254933c70d41SAndriy Gapon 	goto backout;
255015e2f34fSNate Lawson     }
255115e2f34fSNate Lawson     slp_state = ACPI_SS_DEV_SUSPEND;
2552b9c780d6SMitsuru IWASAKI 
255393bfd059SNate Lawson     /* If testing device suspend only, back out of everything here. */
255493bfd059SNate Lawson     if (acpi_susp_bounce)
255533c70d41SAndriy Gapon 	goto backout;
255693bfd059SNate Lawson 
2557be2b1797SNate Lawson     status = AcpiEnterSleepStatePrep(state);
2558be2b1797SNate Lawson     if (ACPI_FAILURE(status)) {
2559b9c780d6SMitsuru IWASAKI 	device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2560b9c780d6SMitsuru IWASAKI 		      AcpiFormatException(status));
256133c70d41SAndriy Gapon 	goto backout;
2562b9c780d6SMitsuru IWASAKI     }
256315e2f34fSNate Lawson     slp_state = ACPI_SS_SLP_PREP;
2564b9c780d6SMitsuru IWASAKI 
2565be2b1797SNate Lawson     if (sc->acpi_sleep_delay > 0)
2566ff01efb5SMitsuru IWASAKI 	DELAY(sc->acpi_sleep_delay * 1000000);
2567ff01efb5SMitsuru IWASAKI 
25686161544cSTakanori Watanabe     if (state != ACPI_STATE_S1) {
25696161544cSTakanori Watanabe 	acpi_sleep_machdep(sc, state);
25706161544cSTakanori Watanabe 
25716161544cSTakanori Watanabe 	/* Re-enable ACPI hardware on wakeup from sleep state 4. */
2572be2b1797SNate Lawson 	if (state == ACPI_STATE_S4)
2573964679ceSMitsuru IWASAKI 	    AcpiEnable();
25746161544cSTakanori Watanabe     } else {
2575c7f88fc3SNate Lawson 	ACPI_DISABLE_IRQS();
2576adad4744SNate Lawson 	status = AcpiEnterSleepState(state);
2577be2b1797SNate Lawson 	if (ACPI_FAILURE(status)) {
2578be2b1797SNate Lawson 	    device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2579be2b1797SNate Lawson 			  AcpiFormatException(status));
258033c70d41SAndriy Gapon 	    goto backout;
258115e32d5dSMike Smith 	}
25826161544cSTakanori Watanabe     }
258315e2f34fSNate Lawson     slp_state = ACPI_SS_SLEPT;
2584ece50487SMitsuru IWASAKI 
258515e2f34fSNate Lawson     /*
258615e2f34fSNate Lawson      * Back out state according to how far along we got in the suspend
258715e2f34fSNate Lawson      * process.  This handles both the error and success cases.
258815e2f34fSNate Lawson      */
258933c70d41SAndriy Gapon backout:
259015e2f34fSNate Lawson     if (slp_state >= ACPI_SS_GPE_SET) {
259115e2f34fSNate Lawson 	acpi_wake_prep_walk(state);
259215e2f34fSNate Lawson 	sc->acpi_sstate = ACPI_STATE_S0;
259315e2f34fSNate Lawson     }
259415e2f34fSNate Lawson     if (slp_state >= ACPI_SS_SLP_PREP)
259515e2f34fSNate Lawson 	AcpiLeaveSleepState(state);
2596071339e2SNate Lawson     if (slp_state >= ACPI_SS_DEV_SUSPEND)
2597071339e2SNate Lawson 	DEVICE_RESUME(root_bus);
259815e2f34fSNate Lawson     if (slp_state >= ACPI_SS_SLEPT)
259915e2f34fSNate Lawson 	acpi_enable_fixed_events(sc);
2600337744d9SJung-uk Kim     sc->acpi_next_sstate = 0;
260115e2f34fSNate Lawson 
2602a56fe095SJohn Baldwin     mtx_unlock(&Giant);
2603c66d2b38SJung-uk Kim 
260436a483bbSJung-uk Kim     if (smp_started) {
2605c66d2b38SJung-uk Kim 	thread_lock(curthread);
2606c66d2b38SJung-uk Kim 	sched_unbind(curthread);
2607c66d2b38SJung-uk Kim 	thread_unlock(curthread);
260836a483bbSJung-uk Kim     }
2609c66d2b38SJung-uk Kim 
2610d42f0ad8SJung-uk Kim     /* Allow another sleep request after a while. */
2611d42f0ad8SJung-uk Kim     timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME);
2612d42f0ad8SJung-uk Kim 
2613d42f0ad8SJung-uk Kim     /* Run /etc/rc.resume after we are back. */
2614d42f0ad8SJung-uk Kim     if (devctl_process_running())
2615d42f0ad8SJung-uk Kim 	acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2616d42f0ad8SJung-uk Kim 
26170ae55423SMike Smith     return_ACPI_STATUS (status);
261815e32d5dSMike Smith }
261915e32d5dSMike Smith 
26200755473bSJung-uk Kim void
26210755473bSJung-uk Kim acpi_resync_clock(struct acpi_softc *sc)
26220755473bSJung-uk Kim {
26230755473bSJung-uk Kim 
26240755473bSJung-uk Kim     if (!acpi_reset_clock)
26250755473bSJung-uk Kim 	return;
26260755473bSJung-uk Kim 
26270755473bSJung-uk Kim     /*
26280755473bSJung-uk Kim      * Warm up timecounter again and reset system clock.
26290755473bSJung-uk Kim      */
26300755473bSJung-uk Kim     (void)timecounter->tc_get_timecount(timecounter);
26310755473bSJung-uk Kim     (void)timecounter->tc_get_timecount(timecounter);
26320755473bSJung-uk Kim     inittodr(time_second + sc->acpi_sleep_delay);
26330755473bSJung-uk Kim }
26340755473bSJung-uk Kim 
2635e8b4d56eSNate Lawson /* Enable or disable the device's wake GPE. */
2636e8b4d56eSNate Lawson int
2637e8b4d56eSNate Lawson acpi_wake_set_enable(device_t dev, int enable)
2638e8b4d56eSNate Lawson {
2639e8b4d56eSNate Lawson     struct acpi_prw_data prw;
2640e8b4d56eSNate Lawson     ACPI_STATUS status;
2641e8b4d56eSNate Lawson     int flags;
2642e8b4d56eSNate Lawson 
2643d4b9ff91SNate Lawson     /* Make sure the device supports waking the system and get the GPE. */
26442be4e471SJung-uk Kim     if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2645e8b4d56eSNate Lawson 	return (ENXIO);
2646e8b4d56eSNate Lawson 
2647d4b9ff91SNate Lawson     flags = acpi_get_flags(dev);
2648e8b4d56eSNate Lawson     if (enable) {
2649a88e22b7SJung-uk Kim 	status = AcpiGpeWakeup(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
2650e8b4d56eSNate Lawson 	if (ACPI_FAILURE(status)) {
2651e8b4d56eSNate Lawson 	    device_printf(dev, "enable wake failed\n");
2652e8b4d56eSNate Lawson 	    return (ENXIO);
2653e8b4d56eSNate Lawson 	}
2654d4b9ff91SNate Lawson 	acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
2655e8b4d56eSNate Lawson     } else {
2656a88e22b7SJung-uk Kim 	status = AcpiGpeWakeup(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
2657e8b4d56eSNate Lawson 	if (ACPI_FAILURE(status)) {
2658e8b4d56eSNate Lawson 	    device_printf(dev, "disable wake failed\n");
2659e8b4d56eSNate Lawson 	    return (ENXIO);
2660e8b4d56eSNate Lawson 	}
2661d4b9ff91SNate Lawson 	acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
2662e8b4d56eSNate Lawson     }
2663e8b4d56eSNate Lawson 
2664e8b4d56eSNate Lawson     return (0);
2665e8b4d56eSNate Lawson }
2666e8b4d56eSNate Lawson 
2667d4b9ff91SNate Lawson static int
2668d4b9ff91SNate Lawson acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
2669e8b4d56eSNate Lawson {
2670e8b4d56eSNate Lawson     struct acpi_prw_data prw;
2671d4b9ff91SNate Lawson     device_t dev;
2672e8b4d56eSNate Lawson 
2673d4b9ff91SNate Lawson     /* Check that this is a wake-capable device and get its GPE. */
2674e8b4d56eSNate Lawson     if (acpi_parse_prw(handle, &prw) != 0)
2675e8b4d56eSNate Lawson 	return (ENXIO);
2676d4b9ff91SNate Lawson     dev = acpi_get_device(handle);
2677e8b4d56eSNate Lawson 
2678e8b4d56eSNate Lawson     /*
2679d4b9ff91SNate Lawson      * The destination sleep state must be less than (i.e., higher power)
2680d4b9ff91SNate Lawson      * or equal to the value specified by _PRW.  If this GPE cannot be
2681d4b9ff91SNate Lawson      * enabled for the next sleep state, then disable it.  If it can and
2682d4b9ff91SNate Lawson      * the user requested it be enabled, turn on any required power resources
2683d4b9ff91SNate Lawson      * and set _PSW.
2684e8b4d56eSNate Lawson      */
2685d4b9ff91SNate Lawson     if (sstate > prw.lowest_wake) {
268636646862SJung-uk Kim 	AcpiGpeWakeup(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
2687e8b4d56eSNate Lawson 	if (bootverbose)
2688d4b9ff91SNate Lawson 	    device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
2689d4b9ff91SNate Lawson 		acpi_name(handle), sstate);
2690d4b9ff91SNate Lawson     } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
2691d4b9ff91SNate Lawson 	acpi_pwr_wake_enable(handle, 1);
2692d4b9ff91SNate Lawson 	acpi_SetInteger(handle, "_PSW", 1);
2693d4b9ff91SNate Lawson 	if (bootverbose)
2694d4b9ff91SNate Lawson 	    device_printf(dev, "wake_prep enabled for %s (S%d)\n",
2695d4b9ff91SNate Lawson 		acpi_name(handle), sstate);
2696d4b9ff91SNate Lawson     }
2697cc85c78cSNate Lawson 
2698cc85c78cSNate Lawson     return (0);
2699e8b4d56eSNate Lawson }
2700e8b4d56eSNate Lawson 
2701d4b9ff91SNate Lawson static int
2702d4b9ff91SNate Lawson acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
2703cc85c78cSNate Lawson {
2704cc85c78cSNate Lawson     struct acpi_prw_data prw;
2705d4b9ff91SNate Lawson     device_t dev;
2706cc85c78cSNate Lawson 
2707cc85c78cSNate Lawson     /*
2708d4b9ff91SNate Lawson      * Check that this is a wake-capable device and get its GPE.  Return
2709d4b9ff91SNate Lawson      * now if the user didn't enable this device for wake.
2710cc85c78cSNate Lawson      */
2711d4b9ff91SNate Lawson     if (acpi_parse_prw(handle, &prw) != 0)
2712d4b9ff91SNate Lawson 	return (ENXIO);
2713d4b9ff91SNate Lawson     dev = acpi_get_device(handle);
2714d4b9ff91SNate Lawson     if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
2715d4b9ff91SNate Lawson 	return (0);
2716cc85c78cSNate Lawson 
2717d4b9ff91SNate Lawson     /*
2718d4b9ff91SNate Lawson      * If this GPE couldn't be enabled for the previous sleep state, it was
2719d4b9ff91SNate Lawson      * disabled before going to sleep so re-enable it.  If it was enabled,
2720d4b9ff91SNate Lawson      * clear _PSW and turn off any power resources it used.
2721d4b9ff91SNate Lawson      */
2722d4b9ff91SNate Lawson     if (sstate > prw.lowest_wake) {
272336646862SJung-uk Kim 	AcpiGpeWakeup(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
2724d4b9ff91SNate Lawson 	if (bootverbose)
2725d4b9ff91SNate Lawson 	    device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
2726d4b9ff91SNate Lawson     } else {
2727d4b9ff91SNate Lawson 	acpi_SetInteger(handle, "_PSW", 0);
2728d4b9ff91SNate Lawson 	acpi_pwr_wake_enable(handle, 0);
2729d4b9ff91SNate Lawson 	if (bootverbose)
2730d4b9ff91SNate Lawson 	    device_printf(dev, "run_prep cleaned up for %s\n",
2731d4b9ff91SNate Lawson 		acpi_name(handle));
2732d4b9ff91SNate Lawson     }
2733d4b9ff91SNate Lawson 
2734e8b4d56eSNate Lawson     return (0);
2735e8b4d56eSNate Lawson }
2736e8b4d56eSNate Lawson 
2737e8b4d56eSNate Lawson static ACPI_STATUS
2738d4b9ff91SNate Lawson acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
2739e8b4d56eSNate Lawson {
2740d4b9ff91SNate Lawson     int sstate;
2741e8b4d56eSNate Lawson 
2742d4b9ff91SNate Lawson     /* If suspending, run the sleep prep function, otherwise wake. */
2743d4b9ff91SNate Lawson     sstate = *(int *)context;
2744d4b9ff91SNate Lawson     if (AcpiGbl_SystemAwakeAndRunning)
2745d4b9ff91SNate Lawson 	acpi_wake_sleep_prep(handle, sstate);
2746d4b9ff91SNate Lawson     else
2747d4b9ff91SNate Lawson 	acpi_wake_run_prep(handle, sstate);
2748e8b4d56eSNate Lawson     return (AE_OK);
2749e8b4d56eSNate Lawson }
2750e8b4d56eSNate Lawson 
2751d4b9ff91SNate Lawson /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
2752e8b4d56eSNate Lawson static int
2753d4b9ff91SNate Lawson acpi_wake_prep_walk(int sstate)
2754e8b4d56eSNate Lawson {
2755e8b4d56eSNate Lawson     ACPI_HANDLE sb_handle;
2756e8b4d56eSNate Lawson 
2757e8b4d56eSNate Lawson     if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
2758d4b9ff91SNate Lawson 	AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
27592272d050SJung-uk Kim 	    acpi_wake_prep, NULL, &sstate, NULL);
2760e8b4d56eSNate Lawson     return (0);
2761e8b4d56eSNate Lawson }
2762e8b4d56eSNate Lawson 
276388a79fc0SNate Lawson /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
276488a79fc0SNate Lawson static int
276588a79fc0SNate Lawson acpi_wake_sysctl_walk(device_t dev)
276688a79fc0SNate Lawson {
276788a79fc0SNate Lawson     int error, i, numdevs;
276888a79fc0SNate Lawson     device_t *devlist;
276988a79fc0SNate Lawson     device_t child;
2770d4b9ff91SNate Lawson     ACPI_STATUS status;
277188a79fc0SNate Lawson 
277288a79fc0SNate Lawson     error = device_get_children(dev, &devlist, &numdevs);
27731c9ec538SNate Lawson     if (error != 0 || numdevs == 0) {
27741c9ec538SNate Lawson 	if (numdevs == 0)
27751c9ec538SNate Lawson 	    free(devlist, M_TEMP);
277688a79fc0SNate Lawson 	return (error);
27771c9ec538SNate Lawson     }
277888a79fc0SNate Lawson     for (i = 0; i < numdevs; i++) {
277988a79fc0SNate Lawson 	child = devlist[i];
2780d4b9ff91SNate Lawson 	acpi_wake_sysctl_walk(child);
278188a79fc0SNate Lawson 	if (!device_is_attached(child))
278288a79fc0SNate Lawson 	    continue;
2783d4b9ff91SNate Lawson 	status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
2784d4b9ff91SNate Lawson 	if (ACPI_SUCCESS(status)) {
278588a79fc0SNate Lawson 	    SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
278688a79fc0SNate Lawson 		SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
278788a79fc0SNate Lawson 		"wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
278888a79fc0SNate Lawson 		acpi_wake_set_sysctl, "I", "Device set to wake the system");
278988a79fc0SNate Lawson 	}
279088a79fc0SNate Lawson     }
279188a79fc0SNate Lawson     free(devlist, M_TEMP);
279288a79fc0SNate Lawson 
279388a79fc0SNate Lawson     return (0);
279488a79fc0SNate Lawson }
279588a79fc0SNate Lawson 
279688a79fc0SNate Lawson /* Enable or disable wake from userland. */
279788a79fc0SNate Lawson static int
279888a79fc0SNate Lawson acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
279988a79fc0SNate Lawson {
280088a79fc0SNate Lawson     int enable, error;
280188a79fc0SNate Lawson     device_t dev;
280288a79fc0SNate Lawson 
280388a79fc0SNate Lawson     dev = (device_t)arg1;
2804d4b9ff91SNate Lawson     enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
280588a79fc0SNate Lawson 
280688a79fc0SNate Lawson     error = sysctl_handle_int(oidp, &enable, 0, req);
280788a79fc0SNate Lawson     if (error != 0 || req->newptr == NULL)
280888a79fc0SNate Lawson 	return (error);
280988a79fc0SNate Lawson     if (enable != 0 && enable != 1)
281088a79fc0SNate Lawson 	return (EINVAL);
281188a79fc0SNate Lawson 
281288a79fc0SNate Lawson     return (acpi_wake_set_enable(dev, enable));
281388a79fc0SNate Lawson }
281488a79fc0SNate Lawson 
2815e8b4d56eSNate Lawson /* Parse a device's _PRW into a structure. */
2816d4b9ff91SNate Lawson int
2817e8b4d56eSNate Lawson acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2818e8b4d56eSNate Lawson {
2819e8b4d56eSNate Lawson     ACPI_STATUS			status;
2820e8b4d56eSNate Lawson     ACPI_BUFFER			prw_buffer;
2821e8b4d56eSNate Lawson     ACPI_OBJECT			*res, *res2;
2822d4b9ff91SNate Lawson     int				error, i, power_count;
2823e8b4d56eSNate Lawson 
2824e8b4d56eSNate Lawson     if (h == NULL || prw == NULL)
2825e8b4d56eSNate Lawson 	return (EINVAL);
2826e8b4d56eSNate Lawson 
2827e8b4d56eSNate Lawson     /*
2828e8b4d56eSNate Lawson      * The _PRW object (7.2.9) is only required for devices that have the
2829e8b4d56eSNate Lawson      * ability to wake the system from a sleeping state.
2830e8b4d56eSNate Lawson      */
2831e8b4d56eSNate Lawson     error = EINVAL;
2832e8b4d56eSNate Lawson     prw_buffer.Pointer = NULL;
2833e8b4d56eSNate Lawson     prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2834e8b4d56eSNate Lawson     status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2835e8b4d56eSNate Lawson     if (ACPI_FAILURE(status))
2836e8b4d56eSNate Lawson 	return (ENOENT);
2837e8b4d56eSNate Lawson     res = (ACPI_OBJECT *)prw_buffer.Pointer;
2838e8b4d56eSNate Lawson     if (res == NULL)
2839e8b4d56eSNate Lawson 	return (ENOENT);
2840e8b4d56eSNate Lawson     if (!ACPI_PKG_VALID(res, 2))
2841e8b4d56eSNate Lawson 	goto out;
2842e8b4d56eSNate Lawson 
2843e8b4d56eSNate Lawson     /*
2844e8b4d56eSNate Lawson      * Element 1 of the _PRW object:
2845e8b4d56eSNate Lawson      * The lowest power system sleeping state that can be entered while still
2846e8b4d56eSNate Lawson      * providing wake functionality.  The sleeping state being entered must
2847e8b4d56eSNate Lawson      * be less than (i.e., higher power) or equal to this value.
2848e8b4d56eSNate Lawson      */
2849e8b4d56eSNate Lawson     if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2850e8b4d56eSNate Lawson 	goto out;
2851e8b4d56eSNate Lawson 
2852e8b4d56eSNate Lawson     /*
2853e8b4d56eSNate Lawson      * Element 0 of the _PRW object:
2854e8b4d56eSNate Lawson      */
2855e8b4d56eSNate Lawson     switch (res->Package.Elements[0].Type) {
2856e8b4d56eSNate Lawson     case ACPI_TYPE_INTEGER:
2857e8b4d56eSNate Lawson 	/*
2858e8b4d56eSNate Lawson 	 * If the data type of this package element is numeric, then this
2859e8b4d56eSNate Lawson 	 * _PRW package element is the bit index in the GPEx_EN, in the
2860e8b4d56eSNate Lawson 	 * GPE blocks described in the FADT, of the enable bit that is
2861e8b4d56eSNate Lawson 	 * enabled for the wake event.
2862e8b4d56eSNate Lawson 	 */
2863e8b4d56eSNate Lawson 	prw->gpe_handle = NULL;
2864e8b4d56eSNate Lawson 	prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2865e8b4d56eSNate Lawson 	error = 0;
2866e8b4d56eSNate Lawson 	break;
2867e8b4d56eSNate Lawson     case ACPI_TYPE_PACKAGE:
2868e8b4d56eSNate Lawson 	/*
2869e8b4d56eSNate Lawson 	 * If the data type of this package element is a package, then this
2870e8b4d56eSNate Lawson 	 * _PRW package element is itself a package containing two
2871e8b4d56eSNate Lawson 	 * elements.  The first is an object reference to the GPE Block
2872e8b4d56eSNate Lawson 	 * device that contains the GPE that will be triggered by the wake
2873e8b4d56eSNate Lawson 	 * event.  The second element is numeric and it contains the bit
2874e8b4d56eSNate Lawson 	 * index in the GPEx_EN, in the GPE Block referenced by the
2875e8b4d56eSNate Lawson 	 * first element in the package, of the enable bit that is enabled for
2876e8b4d56eSNate Lawson 	 * the wake event.
2877e8b4d56eSNate Lawson 	 *
2878e8b4d56eSNate Lawson 	 * For example, if this field is a package then it is of the form:
2879e8b4d56eSNate Lawson 	 * Package() {\_SB.PCI0.ISA.GPE, 2}
2880e8b4d56eSNate Lawson 	 */
2881e8b4d56eSNate Lawson 	res2 = &res->Package.Elements[0];
2882e8b4d56eSNate Lawson 	if (!ACPI_PKG_VALID(res2, 2))
2883e8b4d56eSNate Lawson 	    goto out;
2884e8b4d56eSNate Lawson 	prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2885e8b4d56eSNate Lawson 	if (prw->gpe_handle == NULL)
2886e8b4d56eSNate Lawson 	    goto out;
2887e8b4d56eSNate Lawson 	if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2888e8b4d56eSNate Lawson 	    goto out;
2889e8b4d56eSNate Lawson 	error = 0;
2890e8b4d56eSNate Lawson 	break;
2891e8b4d56eSNate Lawson     default:
2892e8b4d56eSNate Lawson 	goto out;
2893e8b4d56eSNate Lawson     }
2894e8b4d56eSNate Lawson 
2895d4b9ff91SNate Lawson     /* Elements 2 to N of the _PRW object are power resources. */
2896d4b9ff91SNate Lawson     power_count = res->Package.Count - 2;
2897d4b9ff91SNate Lawson     if (power_count > ACPI_PRW_MAX_POWERRES) {
2898d4b9ff91SNate Lawson 	printf("ACPI device %s has too many power resources\n", acpi_name(h));
2899d4b9ff91SNate Lawson 	power_count = 0;
2900d4b9ff91SNate Lawson     }
2901d4b9ff91SNate Lawson     prw->power_res_count = power_count;
2902d4b9ff91SNate Lawson     for (i = 0; i < power_count; i++)
2903d4b9ff91SNate Lawson 	prw->power_res[i] = res->Package.Elements[i];
2904e8b4d56eSNate Lawson 
2905e8b4d56eSNate Lawson out:
2906e8b4d56eSNate Lawson     if (prw_buffer.Pointer != NULL)
2907e8b4d56eSNate Lawson 	AcpiOsFree(prw_buffer.Pointer);
2908e8b4d56eSNate Lawson     return (error);
2909e8b4d56eSNate Lawson }
2910e8b4d56eSNate Lawson 
291115e32d5dSMike Smith /*
291215e32d5dSMike Smith  * ACPI Event Handlers
291315e32d5dSMike Smith  */
291415e32d5dSMike Smith 
291515e32d5dSMike Smith /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
291615e32d5dSMike Smith 
291715e32d5dSMike Smith static void
291815e32d5dSMike Smith acpi_system_eventhandler_sleep(void *arg, int state)
291915e32d5dSMike Smith {
29202d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
292100a30448SNate Lawson     int ret;
2922bee4aa4aSNate Lawson 
2923b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
292415e32d5dSMike Smith 
2925a0e73a12SJung-uk Kim     /* Check if button action is disabled or unknown. */
2926a0e73a12SJung-uk Kim     if (state == ACPI_STATE_UNKNOWN)
2927813d6dcaSNate Lawson 	return;
2928813d6dcaSNate Lawson 
292900a30448SNate Lawson     /* Request that the system prepare to enter the given suspend state. */
29302d0c82e8SJung-uk Kim     ret = acpi_ReqSleepState(sc, state);
293100a30448SNate Lawson     if (ret != 0)
29322d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
29332d0c82e8SJung-uk Kim 	    "request to enter state S%d failed (err %d)\n", state, ret);
2934bee4aa4aSNate Lawson 
29350ae55423SMike Smith     return_VOID;
293615e32d5dSMike Smith }
293715e32d5dSMike Smith 
293815e32d5dSMike Smith static void
293915e32d5dSMike Smith acpi_system_eventhandler_wakeup(void *arg, int state)
294015e32d5dSMike Smith {
2941bee4aa4aSNate Lawson 
2942b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
29430ae55423SMike Smith 
2944bee4aa4aSNate Lawson     /* Currently, nothing to do for wakeup. */
2945cb9b0d80SMike Smith 
29460ae55423SMike Smith     return_VOID;
294715e32d5dSMike Smith }
294815e32d5dSMike Smith 
294915e32d5dSMike Smith /*
295015e32d5dSMike Smith  * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
295115e32d5dSMike Smith  */
295215e32d5dSMike Smith UINT32
295333febf93SNate Lawson acpi_event_power_button_sleep(void *context)
295415e32d5dSMike Smith {
295515e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
295615e32d5dSMike Smith 
2957b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
29580ae55423SMike Smith 
295915e32d5dSMike Smith     EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
29600ae55423SMike Smith 
2961b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
296215e32d5dSMike Smith }
296315e32d5dSMike Smith 
296415e32d5dSMike Smith UINT32
296533febf93SNate Lawson acpi_event_power_button_wake(void *context)
296615e32d5dSMike Smith {
296715e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
296815e32d5dSMike Smith 
2969b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
29700ae55423SMike Smith 
297115e32d5dSMike Smith     EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
29720ae55423SMike Smith 
2973b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
297415e32d5dSMike Smith }
297515e32d5dSMike Smith 
297615e32d5dSMike Smith UINT32
297733febf93SNate Lawson acpi_event_sleep_button_sleep(void *context)
297815e32d5dSMike Smith {
297915e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
298015e32d5dSMike Smith 
2981b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
29820ae55423SMike Smith 
298315e32d5dSMike Smith     EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
29840ae55423SMike Smith 
2985b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
298615e32d5dSMike Smith }
298715e32d5dSMike Smith 
298815e32d5dSMike Smith UINT32
298933febf93SNate Lawson acpi_event_sleep_button_wake(void *context)
299015e32d5dSMike Smith {
299115e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
299215e32d5dSMike Smith 
2993b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
29940ae55423SMike Smith 
299515e32d5dSMike Smith     EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
29960ae55423SMike Smith 
2997b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
299815e32d5dSMike Smith }
299915e32d5dSMike Smith 
300015e32d5dSMike Smith /*
3001bee4aa4aSNate Lawson  * XXX This static buffer is suboptimal.  There is no locking so only
3002bee4aa4aSNate Lawson  * use this for single-threaded callers.
300315e32d5dSMike Smith  */
300415e32d5dSMike Smith char *
300515e32d5dSMike Smith acpi_name(ACPI_HANDLE handle)
300615e32d5dSMike Smith {
3007bee4aa4aSNate Lawson     ACPI_BUFFER buf;
3008bee4aa4aSNate Lawson     static char data[256];
300915e32d5dSMike Smith 
3010bee4aa4aSNate Lawson     buf.Length = sizeof(data);
3011bee4aa4aSNate Lawson     buf.Pointer = data;
3012cb9b0d80SMike Smith 
30130a9a1f44SNate Lawson     if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
3014bee4aa4aSNate Lawson 	return (data);
3015bee4aa4aSNate Lawson     return ("(unknown)");
301615e32d5dSMike Smith }
301715e32d5dSMike Smith 
301815e32d5dSMike Smith /*
301915e32d5dSMike Smith  * Debugging/bug-avoidance.  Avoid trying to fetch info on various
302015e32d5dSMike Smith  * parts of the namespace.
302115e32d5dSMike Smith  */
302215e32d5dSMike Smith int
302315e32d5dSMike Smith acpi_avoid(ACPI_HANDLE handle)
302415e32d5dSMike Smith {
30253c600cfbSJohn Baldwin     char	*cp, *env, *np;
302615e32d5dSMike Smith     int		len;
302715e32d5dSMike Smith 
302815e32d5dSMike Smith     np = acpi_name(handle);
302915e32d5dSMike Smith     if (*np == '\\')
303015e32d5dSMike Smith 	np++;
30313c600cfbSJohn Baldwin     if ((env = getenv("debug.acpi.avoid")) == NULL)
303215e32d5dSMike Smith 	return (0);
303315e32d5dSMike Smith 
3034be2b1797SNate Lawson     /* Scan the avoid list checking for a match */
30353c600cfbSJohn Baldwin     cp = env;
303615e32d5dSMike Smith     for (;;) {
3037bee4aa4aSNate Lawson 	while (*cp != 0 && isspace(*cp))
303815e32d5dSMike Smith 	    cp++;
303915e32d5dSMike Smith 	if (*cp == 0)
304015e32d5dSMike Smith 	    break;
304115e32d5dSMike Smith 	len = 0;
3042bee4aa4aSNate Lawson 	while (cp[len] != 0 && !isspace(cp[len]))
304315e32d5dSMike Smith 	    len++;
3044d786139cSMaxime Henrion 	if (!strncmp(cp, np, len)) {
30453c600cfbSJohn Baldwin 	    freeenv(env);
30460ae55423SMike Smith 	    return(1);
3047d786139cSMaxime Henrion 	}
30480ae55423SMike Smith 	cp += len;
30490ae55423SMike Smith     }
30503c600cfbSJohn Baldwin     freeenv(env);
3051be2b1797SNate Lawson 
30520ae55423SMike Smith     return (0);
30530ae55423SMike Smith }
30540ae55423SMike Smith 
30550ae55423SMike Smith /*
30560ae55423SMike Smith  * Debugging/bug-avoidance.  Disable ACPI subsystem components.
30570ae55423SMike Smith  */
30580ae55423SMike Smith int
30590ae55423SMike Smith acpi_disabled(char *subsys)
30600ae55423SMike Smith {
306178689b15SMaxime Henrion     char	*cp, *env;
30620ae55423SMike Smith     int		len;
30630ae55423SMike Smith 
30643184cf5aSNate Lawson     if ((env = getenv("debug.acpi.disabled")) == NULL)
30650ae55423SMike Smith 	return (0);
30663184cf5aSNate Lawson     if (strcmp(env, "all") == 0) {
306778689b15SMaxime Henrion 	freeenv(env);
30680ae55423SMike Smith 	return (1);
3069d786139cSMaxime Henrion     }
30700ae55423SMike Smith 
30713184cf5aSNate Lawson     /* Scan the disable list, checking for a match. */
307278689b15SMaxime Henrion     cp = env;
30730ae55423SMike Smith     for (;;) {
30743184cf5aSNate Lawson 	while (*cp != '\0' && isspace(*cp))
30750ae55423SMike Smith 	    cp++;
30763184cf5aSNate Lawson 	if (*cp == '\0')
30770ae55423SMike Smith 	    break;
30780ae55423SMike Smith 	len = 0;
30793184cf5aSNate Lawson 	while (cp[len] != '\0' && !isspace(cp[len]))
30800ae55423SMike Smith 	    len++;
30813184cf5aSNate Lawson 	if (strncmp(cp, subsys, len) == 0) {
308278689b15SMaxime Henrion 	    freeenv(env);
308315e32d5dSMike Smith 	    return (1);
3084d786139cSMaxime Henrion 	}
308515e32d5dSMike Smith 	cp += len;
308615e32d5dSMike Smith     }
308778689b15SMaxime Henrion     freeenv(env);
3088be2b1797SNate Lawson 
308915e32d5dSMike Smith     return (0);
309015e32d5dSMike Smith }
309115e32d5dSMike Smith 
309215e32d5dSMike Smith /*
309315e32d5dSMike Smith  * Control interface.
309415e32d5dSMike Smith  *
30950ae55423SMike Smith  * We multiplex ioctls for all participating ACPI devices here.  Individual
3096be2b1797SNate Lawson  * drivers wanting to be accessible via /dev/acpi should use the
3097be2b1797SNate Lawson  * register/deregister interface to make their handlers visible.
309815e32d5dSMike Smith  */
30990ae55423SMike Smith struct acpi_ioctl_hook
31000ae55423SMike Smith {
31010ae55423SMike Smith     TAILQ_ENTRY(acpi_ioctl_hook) link;
31020ae55423SMike Smith     u_long			 cmd;
3103be2b1797SNate Lawson     acpi_ioctl_fn		 fn;
31040ae55423SMike Smith     void			 *arg;
31050ae55423SMike Smith };
31060ae55423SMike Smith 
31070ae55423SMike Smith static TAILQ_HEAD(,acpi_ioctl_hook)	acpi_ioctl_hooks;
31080ae55423SMike Smith static int				acpi_ioctl_hooks_initted;
31090ae55423SMike Smith 
31100ae55423SMike Smith int
3111be2b1797SNate Lawson acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
31120ae55423SMike Smith {
31130ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
31140ae55423SMike Smith 
31150ae55423SMike Smith     if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
31160ae55423SMike Smith 	return (ENOMEM);
31170ae55423SMike Smith     hp->cmd = cmd;
31180ae55423SMike Smith     hp->fn = fn;
31190ae55423SMike Smith     hp->arg = arg;
312015e2f34fSNate Lawson 
312115e2f34fSNate Lawson     ACPI_LOCK(acpi);
31220ae55423SMike Smith     if (acpi_ioctl_hooks_initted == 0) {
31230ae55423SMike Smith 	TAILQ_INIT(&acpi_ioctl_hooks);
31240ae55423SMike Smith 	acpi_ioctl_hooks_initted = 1;
31250ae55423SMike Smith     }
31260ae55423SMike Smith     TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
312715e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
312815e2f34fSNate Lawson 
31290ae55423SMike Smith     return (0);
31300ae55423SMike Smith }
31310ae55423SMike Smith 
31320ae55423SMike Smith void
3133be2b1797SNate Lawson acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
31340ae55423SMike Smith {
31350ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
31360ae55423SMike Smith 
313715e2f34fSNate Lawson     ACPI_LOCK(acpi);
31380ae55423SMike Smith     TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
313915e2f34fSNate Lawson 	if (hp->cmd == cmd && hp->fn == fn)
31400ae55423SMike Smith 	    break;
31410ae55423SMike Smith 
31420ae55423SMike Smith     if (hp != NULL) {
31430ae55423SMike Smith 	TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
31440ae55423SMike Smith 	free(hp, M_ACPIDEV);
31450ae55423SMike Smith     }
314615e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
31470ae55423SMike Smith }
31480ae55423SMike Smith 
314915e32d5dSMike Smith static int
315000b4e54aSWarner Losh acpiopen(struct cdev *dev, int flag, int fmt, struct thread *td)
315115e32d5dSMike Smith {
315215e32d5dSMike Smith     return (0);
315315e32d5dSMike Smith }
315415e32d5dSMike Smith 
315515e32d5dSMike Smith static int
315600b4e54aSWarner Losh acpiclose(struct cdev *dev, int flag, int fmt, struct thread *td)
315715e32d5dSMike Smith {
315815e32d5dSMike Smith     return (0);
315915e32d5dSMike Smith }
316015e32d5dSMike Smith 
316115e32d5dSMike Smith static int
316200b4e54aSWarner Losh acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
316315e32d5dSMike Smith {
316415e32d5dSMike Smith     struct acpi_softc		*sc;
31650ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
3166bee4aa4aSNate Lawson     int				error, state;
316715e32d5dSMike Smith 
3168a2e35898SDavid E. O'Brien     error = 0;
3169a2e35898SDavid E. O'Brien     hp = NULL;
317015e32d5dSMike Smith     sc = dev->si_drv1;
317115e32d5dSMike Smith 
31720ae55423SMike Smith     /*
31730ae55423SMike Smith      * Scan the list of registered ioctls, looking for handlers.
31740ae55423SMike Smith      */
317515e2f34fSNate Lawson     ACPI_LOCK(acpi);
3176bee4aa4aSNate Lawson     if (acpi_ioctl_hooks_initted)
31770ae55423SMike Smith 	TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3178bee4aa4aSNate Lawson 	    if (hp->cmd == cmd)
3179bee4aa4aSNate Lawson 		break;
31800ae55423SMike Smith 	}
318115e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
3182bee4aa4aSNate Lawson     if (hp)
3183bee4aa4aSNate Lawson 	return (hp->fn(cmd, addr, hp->arg));
31840ae55423SMike Smith 
31850ae55423SMike Smith     /*
3186a89fcf28STakanori Watanabe      * Core ioctls are not permitted for non-writable user.
3187a89fcf28STakanori Watanabe      * Currently, other ioctls just fetch information.
3188a89fcf28STakanori Watanabe      * Not changing system behavior.
3189a89fcf28STakanori Watanabe      */
3190be2b1797SNate Lawson     if ((flag & FWRITE) == 0)
3191be2b1797SNate Lawson 	return (EPERM);
3192a89fcf28STakanori Watanabe 
3193be2b1797SNate Lawson     /* Core system ioctls. */
319415e32d5dSMike Smith     switch (cmd) {
319500a30448SNate Lawson     case ACPIIO_REQSLPSTATE:
319600a30448SNate Lawson 	state = *(int *)addr;
319700a30448SNate Lawson 	if (state != ACPI_STATE_S5)
3198a0e73a12SJung-uk Kim 	    return (acpi_ReqSleepState(sc, state));
3199a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n");
3200a0e73a12SJung-uk Kim 	error = EOPNOTSUPP;
320100a30448SNate Lawson 	break;
320200a30448SNate Lawson     case ACPIIO_ACKSLPSTATE:
320300a30448SNate Lawson 	error = *(int *)addr;
320400a30448SNate Lawson 	error = acpi_AckSleepState(sc->acpi_clone, error);
320500a30448SNate Lawson 	break;
320600a30448SNate Lawson     case ACPIIO_SETSLPSTATE:	/* DEPRECATED */
320715e32d5dSMike Smith 	state = *(int *)addr;
3208a0e73a12SJung-uk Kim 	if (state < ACPI_STATE_S0 || state > ACPI_S_STATES_MAX)
3209a0e73a12SJung-uk Kim 	    return (EINVAL);
3210a0e73a12SJung-uk Kim 	if (!acpi_sleep_states[state])
3211a0e73a12SJung-uk Kim 	    return (EOPNOTSUPP);
3212a0e73a12SJung-uk Kim 	if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
3213a0e73a12SJung-uk Kim 	    error = ENXIO;
321415e32d5dSMike Smith 	break;
321515e32d5dSMike Smith     default:
3216bee4aa4aSNate Lawson 	error = ENXIO;
321715e32d5dSMike Smith 	break;
321815e32d5dSMike Smith     }
3219917d44c8SMitsuru IWASAKI 
322015e32d5dSMike Smith     return (error);
322115e32d5dSMike Smith }
322215e32d5dSMike Smith 
32231d073b1dSJohn Baldwin static int
3224a0e73a12SJung-uk Kim acpi_sname2sstate(const char *sname)
3225a0e73a12SJung-uk Kim {
3226a0e73a12SJung-uk Kim     int sstate;
3227a0e73a12SJung-uk Kim 
3228a0e73a12SJung-uk Kim     if (toupper(sname[0]) == 'S') {
3229a0e73a12SJung-uk Kim 	sstate = sname[1] - '0';
3230a0e73a12SJung-uk Kim 	if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5 &&
3231a0e73a12SJung-uk Kim 	    sname[2] == '\0')
3232a0e73a12SJung-uk Kim 	    return (sstate);
3233a0e73a12SJung-uk Kim     } else if (strcasecmp(sname, "NONE") == 0)
3234a0e73a12SJung-uk Kim 	return (ACPI_STATE_UNKNOWN);
3235a0e73a12SJung-uk Kim     return (-1);
3236a0e73a12SJung-uk Kim }
3237a0e73a12SJung-uk Kim 
3238a0e73a12SJung-uk Kim static const char *
3239a0e73a12SJung-uk Kim acpi_sstate2sname(int sstate)
3240a0e73a12SJung-uk Kim {
3241a0e73a12SJung-uk Kim     static const char *snames[] = { "S0", "S1", "S2", "S3", "S4", "S5" };
3242a0e73a12SJung-uk Kim 
3243a0e73a12SJung-uk Kim     if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5)
3244a0e73a12SJung-uk Kim 	return (snames[sstate]);
3245a0e73a12SJung-uk Kim     else if (sstate == ACPI_STATE_UNKNOWN)
3246a0e73a12SJung-uk Kim 	return ("NONE");
3247a0e73a12SJung-uk Kim     return (NULL);
3248a0e73a12SJung-uk Kim }
3249a0e73a12SJung-uk Kim 
3250a0e73a12SJung-uk Kim static int
3251d75de536SMitsuru IWASAKI acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3252d75de536SMitsuru IWASAKI {
3253d75de536SMitsuru IWASAKI     int error;
3254bee4aa4aSNate Lawson     struct sbuf sb;
3255a0e73a12SJung-uk Kim     UINT8 state;
3256d75de536SMitsuru IWASAKI 
3257bee4aa4aSNate Lawson     sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3258a0e73a12SJung-uk Kim     for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
3259a0e73a12SJung-uk Kim 	if (acpi_sleep_states[state])
3260a0e73a12SJung-uk Kim 	    sbuf_printf(&sb, "%s ", acpi_sstate2sname(state));
3261bee4aa4aSNate Lawson     sbuf_trim(&sb);
3262bee4aa4aSNate Lawson     sbuf_finish(&sb);
3263bee4aa4aSNate Lawson     error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3264bee4aa4aSNate Lawson     sbuf_delete(&sb);
3265d75de536SMitsuru IWASAKI     return (error);
3266d75de536SMitsuru IWASAKI }
3267d75de536SMitsuru IWASAKI 
3268d75de536SMitsuru IWASAKI static int
32691d073b1dSJohn Baldwin acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
32701d073b1dSJohn Baldwin {
32711d073b1dSJohn Baldwin     char sleep_state[10];
3272a0e73a12SJung-uk Kim     int error, new_state, old_state;
32731d073b1dSJohn Baldwin 
3274a0e73a12SJung-uk Kim     old_state = *(int *)oidp->oid_arg1;
3275a0e73a12SJung-uk Kim     strlcpy(sleep_state, acpi_sstate2sname(old_state), sizeof(sleep_state));
32761d073b1dSJohn Baldwin     error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
32771d073b1dSJohn Baldwin     if (error == 0 && req->newptr != NULL) {
3278a0e73a12SJung-uk Kim 	new_state = acpi_sname2sstate(sleep_state);
3279a0e73a12SJung-uk Kim 	if (new_state < ACPI_STATE_S1)
3280a0e73a12SJung-uk Kim 	    return (EINVAL);
328154b43614SJung-uk Kim 	if (new_state < ACPI_S_STATE_COUNT && !acpi_sleep_states[new_state])
3282a0e73a12SJung-uk Kim 	    return (EOPNOTSUPP);
3283be2b1797SNate Lawson 	if (new_state != old_state)
3284a0e73a12SJung-uk Kim 	    *(int *)oidp->oid_arg1 = new_state;
32851d073b1dSJohn Baldwin     }
32861d073b1dSJohn Baldwin     return (error);
32871d073b1dSJohn Baldwin }
32881d073b1dSJohn Baldwin 
32899b937d48SNate Lawson /* Inform devctl(4) when we receive a Notify. */
32909b937d48SNate Lawson void
32919b937d48SNate Lawson acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
32929b937d48SNate Lawson {
32939b937d48SNate Lawson     char		notify_buf[16];
32949b937d48SNate Lawson     ACPI_BUFFER		handle_buf;
32959b937d48SNate Lawson     ACPI_STATUS		status;
32969b937d48SNate Lawson 
32979b937d48SNate Lawson     if (subsystem == NULL)
32989b937d48SNate Lawson 	return;
32999b937d48SNate Lawson 
33009b937d48SNate Lawson     handle_buf.Pointer = NULL;
33019b937d48SNate Lawson     handle_buf.Length = ACPI_ALLOCATE_BUFFER;
33029b937d48SNate Lawson     status = AcpiNsHandleToPathname(h, &handle_buf);
33039b937d48SNate Lawson     if (ACPI_FAILURE(status))
33049b937d48SNate Lawson 	return;
33059b937d48SNate Lawson     snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
33069b937d48SNate Lawson     devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
33079b937d48SNate Lawson     AcpiOsFree(handle_buf.Pointer);
33089b937d48SNate Lawson }
33099b937d48SNate Lawson 
331015e32d5dSMike Smith #ifdef ACPI_DEBUG
33110ae55423SMike Smith /*
33120ae55423SMike Smith  * Support for parsing debug options from the kernel environment.
33130ae55423SMike Smith  *
33140ae55423SMike Smith  * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
33150ae55423SMike Smith  * by specifying the names of the bits in the debug.acpi.layer and
33160ae55423SMike Smith  * debug.acpi.level environment variables.  Bits may be unset by
33170ae55423SMike Smith  * prefixing the bit name with !.
33180ae55423SMike Smith  */
331915e32d5dSMike Smith struct debugtag
332015e32d5dSMike Smith {
332115e32d5dSMike Smith     char	*name;
332215e32d5dSMike Smith     UINT32	value;
332315e32d5dSMike Smith };
332415e32d5dSMike Smith 
332515e32d5dSMike Smith static struct debugtag	dbg_layer[] = {
3326c5ba0be4SMike Smith     {"ACPI_UTILITIES",		ACPI_UTILITIES},
3327c5ba0be4SMike Smith     {"ACPI_HARDWARE",		ACPI_HARDWARE},
3328c5ba0be4SMike Smith     {"ACPI_EVENTS",		ACPI_EVENTS},
3329c5ba0be4SMike Smith     {"ACPI_TABLES",		ACPI_TABLES},
3330c5ba0be4SMike Smith     {"ACPI_NAMESPACE",		ACPI_NAMESPACE},
3331c5ba0be4SMike Smith     {"ACPI_PARSER",		ACPI_PARSER},
3332c5ba0be4SMike Smith     {"ACPI_DISPATCHER",		ACPI_DISPATCHER},
3333c5ba0be4SMike Smith     {"ACPI_EXECUTER",		ACPI_EXECUTER},
3334c5ba0be4SMike Smith     {"ACPI_RESOURCES",		ACPI_RESOURCES},
3335d62ab2f4SMitsuru IWASAKI     {"ACPI_CA_DEBUGGER",	ACPI_CA_DEBUGGER},
33364c1cdee6SMike Smith     {"ACPI_OS_SERVICES",	ACPI_OS_SERVICES},
3337d62ab2f4SMitsuru IWASAKI     {"ACPI_CA_DISASSEMBLER",	ACPI_CA_DISASSEMBLER},
3338297835bcSNate Lawson     {"ACPI_ALL_COMPONENTS",	ACPI_ALL_COMPONENTS},
33394c1cdee6SMike Smith 
3340c5ba0be4SMike Smith     {"ACPI_AC_ADAPTER",		ACPI_AC_ADAPTER},
3341c5ba0be4SMike Smith     {"ACPI_BATTERY",		ACPI_BATTERY},
33423184cf5aSNate Lawson     {"ACPI_BUS",		ACPI_BUS},
3343c5ba0be4SMike Smith     {"ACPI_BUTTON",		ACPI_BUTTON},
33443184cf5aSNate Lawson     {"ACPI_EC", 		ACPI_EC},
33453184cf5aSNate Lawson     {"ACPI_FAN",		ACPI_FAN},
33463184cf5aSNate Lawson     {"ACPI_POWERRES",		ACPI_POWERRES},
33474c1cdee6SMike Smith     {"ACPI_PROCESSOR",		ACPI_PROCESSOR},
3348cb9b0d80SMike Smith     {"ACPI_THERMAL",		ACPI_THERMAL},
33493184cf5aSNate Lawson     {"ACPI_TIMER",		ACPI_TIMER},
3350b53f2771SMike Smith     {"ACPI_ALL_DRIVERS",	ACPI_ALL_DRIVERS},
335115e32d5dSMike Smith     {NULL, 0}
335215e32d5dSMike Smith };
335315e32d5dSMike Smith 
335415e32d5dSMike Smith static struct debugtag dbg_level[] = {
33559501b603SJohn Baldwin     {"ACPI_LV_INIT",		ACPI_LV_INIT},
33564c1cdee6SMike Smith     {"ACPI_LV_DEBUG_OBJECT",	ACPI_LV_DEBUG_OBJECT},
33579501b603SJohn Baldwin     {"ACPI_LV_INFO",		ACPI_LV_INFO},
33584c1cdee6SMike Smith     {"ACPI_LV_ALL_EXCEPTIONS",	ACPI_LV_ALL_EXCEPTIONS},
3359d62ab2f4SMitsuru IWASAKI 
3360d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 1 [Standard Trace Level] */
3361297835bcSNate Lawson     {"ACPI_LV_INIT_NAMES",	ACPI_LV_INIT_NAMES},
33624c1cdee6SMike Smith     {"ACPI_LV_PARSE",		ACPI_LV_PARSE},
33634c1cdee6SMike Smith     {"ACPI_LV_LOAD",		ACPI_LV_LOAD},
3364d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_DISPATCH",	ACPI_LV_DISPATCH},
33654c1cdee6SMike Smith     {"ACPI_LV_EXEC",		ACPI_LV_EXEC},
33664c1cdee6SMike Smith     {"ACPI_LV_NAMES",		ACPI_LV_NAMES},
33674c1cdee6SMike Smith     {"ACPI_LV_OPREGION",	ACPI_LV_OPREGION},
33684c1cdee6SMike Smith     {"ACPI_LV_BFIELD",		ACPI_LV_BFIELD},
33694c1cdee6SMike Smith     {"ACPI_LV_TABLES",		ACPI_LV_TABLES},
33704c1cdee6SMike Smith     {"ACPI_LV_VALUES",		ACPI_LV_VALUES},
33714c1cdee6SMike Smith     {"ACPI_LV_OBJECTS",		ACPI_LV_OBJECTS},
33724c1cdee6SMike Smith     {"ACPI_LV_RESOURCES",	ACPI_LV_RESOURCES},
33734c1cdee6SMike Smith     {"ACPI_LV_USER_REQUESTS",	ACPI_LV_USER_REQUESTS},
33744c1cdee6SMike Smith     {"ACPI_LV_PACKAGE",		ACPI_LV_PACKAGE},
3375d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY1",	ACPI_LV_VERBOSITY1},
3376d62ab2f4SMitsuru IWASAKI 
3377d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 2 [Function tracing and memory allocation] */
3378d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_ALLOCATIONS",	ACPI_LV_ALLOCATIONS},
3379d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_FUNCTIONS",	ACPI_LV_FUNCTIONS},
3380d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_OPTIMIZATIONS",	ACPI_LV_OPTIMIZATIONS},
3381d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY2",	ACPI_LV_VERBOSITY2},
33824c1cdee6SMike Smith     {"ACPI_LV_ALL",		ACPI_LV_ALL},
3383d62ab2f4SMitsuru IWASAKI 
3384d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3385d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_MUTEX",		ACPI_LV_MUTEX},
3386d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_THREADS",		ACPI_LV_THREADS},
3387d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_IO",		ACPI_LV_IO},
3388d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_INTERRUPTS",	ACPI_LV_INTERRUPTS},
3389d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY3",	ACPI_LV_VERBOSITY3},
3390d62ab2f4SMitsuru IWASAKI 
3391d62ab2f4SMitsuru IWASAKI     /* Exceptionally verbose output -- also used in the global "DebugLevel"  */
339298479b04SMitsuru IWASAKI     {"ACPI_LV_AML_DISASSEMBLE",	ACPI_LV_AML_DISASSEMBLE},
339398479b04SMitsuru IWASAKI     {"ACPI_LV_VERBOSE_INFO",	ACPI_LV_VERBOSE_INFO},
339498479b04SMitsuru IWASAKI     {"ACPI_LV_FULL_TABLES",	ACPI_LV_FULL_TABLES},
339598479b04SMitsuru IWASAKI     {"ACPI_LV_EVENTS",		ACPI_LV_EVENTS},
339698479b04SMitsuru IWASAKI     {"ACPI_LV_VERBOSE",		ACPI_LV_VERBOSE},
339715e32d5dSMike Smith     {NULL, 0}
339815e32d5dSMike Smith };
339915e32d5dSMike Smith 
340015e32d5dSMike Smith static void
340115e32d5dSMike Smith acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
340215e32d5dSMike Smith {
340315e32d5dSMike Smith     char	*ep;
340415e32d5dSMike Smith     int		i, l;
34050ae55423SMike Smith     int		set;
340615e32d5dSMike Smith 
340715e32d5dSMike Smith     while (*cp) {
340815e32d5dSMike Smith 	if (isspace(*cp)) {
340915e32d5dSMike Smith 	    cp++;
341015e32d5dSMike Smith 	    continue;
341115e32d5dSMike Smith 	}
341215e32d5dSMike Smith 	ep = cp;
341315e32d5dSMike Smith 	while (*ep && !isspace(*ep))
341415e32d5dSMike Smith 	    ep++;
34150ae55423SMike Smith 	if (*cp == '!') {
34160ae55423SMike Smith 	    set = 0;
34170ae55423SMike Smith 	    cp++;
34180ae55423SMike Smith 	    if (cp == ep)
34190ae55423SMike Smith 		continue;
34200ae55423SMike Smith 	} else {
34210ae55423SMike Smith 	    set = 1;
34220ae55423SMike Smith 	}
342315e32d5dSMike Smith 	l = ep - cp;
342415e32d5dSMike Smith 	for (i = 0; tag[i].name != NULL; i++) {
342515e32d5dSMike Smith 	    if (!strncmp(cp, tag[i].name, l)) {
3426be2b1797SNate Lawson 		if (set)
342715e32d5dSMike Smith 		    *flag |= tag[i].value;
3428be2b1797SNate Lawson 		else
34290ae55423SMike Smith 		    *flag &= ~tag[i].value;
343015e32d5dSMike Smith 	    }
343115e32d5dSMike Smith 	}
343215e32d5dSMike Smith 	cp = ep;
343315e32d5dSMike Smith     }
343415e32d5dSMike Smith }
343515e32d5dSMike Smith 
343615e32d5dSMike Smith static void
34372a4ac806SMike Smith acpi_set_debugging(void *junk)
343815e32d5dSMike Smith {
34397e639165SNate Lawson     char	*layer, *level;
344015e32d5dSMike Smith 
34411d7b121cSNate Lawson     if (cold) {
34420ae55423SMike Smith 	AcpiDbgLayer = 0;
34430ae55423SMike Smith 	AcpiDbgLevel = 0;
34441d7b121cSNate Lawson     }
34451d7b121cSNate Lawson 
34467e639165SNate Lawson     layer = getenv("debug.acpi.layer");
34477e639165SNate Lawson     level = getenv("debug.acpi.level");
34487e639165SNate Lawson     if (layer == NULL && level == NULL)
34497e639165SNate Lawson 	return;
34500ae55423SMike Smith 
34517e639165SNate Lawson     printf("ACPI set debug");
34527e639165SNate Lawson     if (layer != NULL) {
34537e639165SNate Lawson 	if (strcmp("NONE", layer) != 0)
34547e639165SNate Lawson 	    printf(" layer '%s'", layer);
34557e639165SNate Lawson 	acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
34567e639165SNate Lawson 	freeenv(layer);
34571d7b121cSNate Lawson     }
34587e639165SNate Lawson     if (level != NULL) {
34597e639165SNate Lawson 	if (strcmp("NONE", level) != 0)
34607e639165SNate Lawson 	    printf(" level '%s'", level);
34617e639165SNate Lawson 	acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
34627e639165SNate Lawson 	freeenv(level);
34637e639165SNate Lawson     }
34647e639165SNate Lawson     printf("\n");
346515e32d5dSMike Smith }
3466bee4aa4aSNate Lawson 
3467be2b1797SNate Lawson SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3468be2b1797SNate Lawson 	NULL);
34691d7b121cSNate Lawson 
34701d7b121cSNate Lawson static int
34711d7b121cSNate Lawson acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
34721d7b121cSNate Lawson {
347354f6bca0SNate Lawson     int		 error, *dbg;
34741d7b121cSNate Lawson     struct	 debugtag *tag;
347554f6bca0SNate Lawson     struct	 sbuf sb;
34761d7b121cSNate Lawson 
347754f6bca0SNate Lawson     if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
347854f6bca0SNate Lawson 	return (ENOMEM);
34791d7b121cSNate Lawson     if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
34801d7b121cSNate Lawson 	tag = &dbg_layer[0];
34811d7b121cSNate Lawson 	dbg = &AcpiDbgLayer;
34821d7b121cSNate Lawson     } else {
34831d7b121cSNate Lawson 	tag = &dbg_level[0];
34841d7b121cSNate Lawson 	dbg = &AcpiDbgLevel;
34851d7b121cSNate Lawson     }
34861d7b121cSNate Lawson 
34871d7b121cSNate Lawson     /* Get old values if this is a get request. */
348815e2f34fSNate Lawson     ACPI_SERIAL_BEGIN(acpi);
34891d7b121cSNate Lawson     if (*dbg == 0) {
349054f6bca0SNate Lawson 	sbuf_cpy(&sb, "NONE");
34911d7b121cSNate Lawson     } else if (req->newptr == NULL) {
34921d7b121cSNate Lawson 	for (; tag->name != NULL; tag++) {
349354f6bca0SNate Lawson 	    if ((*dbg & tag->value) == tag->value)
349454f6bca0SNate Lawson 		sbuf_printf(&sb, "%s ", tag->name);
34951d7b121cSNate Lawson 	}
34961d7b121cSNate Lawson     }
349754f6bca0SNate Lawson     sbuf_trim(&sb);
349854f6bca0SNate Lawson     sbuf_finish(&sb);
34991d7b121cSNate Lawson 
35007e639165SNate Lawson     /* Copy out the old values to the user. */
35017e639165SNate Lawson     error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
350254f6bca0SNate Lawson     sbuf_delete(&sb);
35031d7b121cSNate Lawson 
35041d7b121cSNate Lawson     /* If the user is setting a string, parse it. */
35051d7b121cSNate Lawson     if (error == 0 && req->newptr != NULL) {
35061d7b121cSNate Lawson 	*dbg = 0;
35071d7b121cSNate Lawson 	setenv((char *)oidp->oid_arg1, (char *)req->newptr);
35081d7b121cSNate Lawson 	acpi_set_debugging(NULL);
35091d7b121cSNate Lawson     }
351015e2f34fSNate Lawson     ACPI_SERIAL_END(acpi);
35111d7b121cSNate Lawson 
35121d7b121cSNate Lawson     return (error);
35131d7b121cSNate Lawson }
3514bee4aa4aSNate Lawson 
35151d7b121cSNate Lawson SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
35161d7b121cSNate Lawson 	    "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
35171d7b121cSNate Lawson SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
35181d7b121cSNate Lawson 	    "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3519bee4aa4aSNate Lawson #endif /* ACPI_DEBUG */
3520f9390180SMitsuru IWASAKI 
3521f9390180SMitsuru IWASAKI static int
35222a18c71dSJung-uk Kim acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS)
35232a18c71dSJung-uk Kim {
35242a18c71dSJung-uk Kim 	int	error;
35252a18c71dSJung-uk Kim 	int	old;
35262a18c71dSJung-uk Kim 
35272a18c71dSJung-uk Kim 	old = acpi_debug_objects;
35282a18c71dSJung-uk Kim 	error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req);
35292a18c71dSJung-uk Kim 	if (error != 0 || req->newptr == NULL)
35302a18c71dSJung-uk Kim 		return (error);
35312a18c71dSJung-uk Kim 	if (old == acpi_debug_objects || (old && acpi_debug_objects))
35322a18c71dSJung-uk Kim 		return (0);
35332a18c71dSJung-uk Kim 
35342a18c71dSJung-uk Kim 	ACPI_SERIAL_BEGIN(acpi);
35352a18c71dSJung-uk Kim 	AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
35362a18c71dSJung-uk Kim 	ACPI_SERIAL_END(acpi);
35372a18c71dSJung-uk Kim 
35382a18c71dSJung-uk Kim 	return (0);
35392a18c71dSJung-uk Kim }
35402a18c71dSJung-uk Kim 
35412a18c71dSJung-uk Kim static int
3542f9390180SMitsuru IWASAKI acpi_pm_func(u_long cmd, void *arg, ...)
3543f9390180SMitsuru IWASAKI {
3544f9390180SMitsuru IWASAKI 	int	state, acpi_state;
3545f9390180SMitsuru IWASAKI 	int	error;
3546f9390180SMitsuru IWASAKI 	struct	acpi_softc *sc;
3547f9390180SMitsuru IWASAKI 	va_list	ap;
3548f9390180SMitsuru IWASAKI 
3549f9390180SMitsuru IWASAKI 	error = 0;
3550f9390180SMitsuru IWASAKI 	switch (cmd) {
3551f9390180SMitsuru IWASAKI 	case POWER_CMD_SUSPEND:
3552f9390180SMitsuru IWASAKI 		sc = (struct acpi_softc *)arg;
3553f9390180SMitsuru IWASAKI 		if (sc == NULL) {
3554f9390180SMitsuru IWASAKI 			error = EINVAL;
3555f9390180SMitsuru IWASAKI 			goto out;
3556f9390180SMitsuru IWASAKI 		}
3557f9390180SMitsuru IWASAKI 
3558f9390180SMitsuru IWASAKI 		va_start(ap, arg);
3559f9390180SMitsuru IWASAKI 		state = va_arg(ap, int);
3560f9390180SMitsuru IWASAKI 		va_end(ap);
3561f9390180SMitsuru IWASAKI 
3562f9390180SMitsuru IWASAKI 		switch (state) {
3563f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_STANDBY:
3564f9390180SMitsuru IWASAKI 			acpi_state = sc->acpi_standby_sx;
3565f9390180SMitsuru IWASAKI 			break;
3566f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_SUSPEND:
3567f9390180SMitsuru IWASAKI 			acpi_state = sc->acpi_suspend_sx;
3568f9390180SMitsuru IWASAKI 			break;
3569f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_HIBERNATE:
3570f9390180SMitsuru IWASAKI 			acpi_state = ACPI_STATE_S4;
3571f9390180SMitsuru IWASAKI 			break;
3572f9390180SMitsuru IWASAKI 		default:
3573f9390180SMitsuru IWASAKI 			error = EINVAL;
3574f9390180SMitsuru IWASAKI 			goto out;
3575f9390180SMitsuru IWASAKI 		}
3576f9390180SMitsuru IWASAKI 
357700a30448SNate Lawson 		if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
357800a30448SNate Lawson 			error = ENXIO;
3579f9390180SMitsuru IWASAKI 		break;
3580f9390180SMitsuru IWASAKI 	default:
3581f9390180SMitsuru IWASAKI 		error = EINVAL;
3582f9390180SMitsuru IWASAKI 		goto out;
3583f9390180SMitsuru IWASAKI 	}
3584f9390180SMitsuru IWASAKI 
3585f9390180SMitsuru IWASAKI out:
3586f9390180SMitsuru IWASAKI 	return (error);
3587f9390180SMitsuru IWASAKI }
3588f9390180SMitsuru IWASAKI 
3589f9390180SMitsuru IWASAKI static void
3590f9390180SMitsuru IWASAKI acpi_pm_register(void *arg)
3591f9390180SMitsuru IWASAKI {
3592be2b1797SNate Lawson     if (!cold || resource_disabled("acpi", 0))
35936c407052SMitsuru IWASAKI 	return;
3594f9390180SMitsuru IWASAKI 
3595f9390180SMitsuru IWASAKI     power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3596f9390180SMitsuru IWASAKI }
3597f9390180SMitsuru IWASAKI 
3598f9390180SMitsuru IWASAKI SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);
3599