xref: /freebsd/sys/dev/acpica/acpi.c (revision 129d3046ef0427d3b22b78a71f3494854d817fba)
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 #ifdef SMP
50c66d2b38SJung-uk Kim #include <sys/sched.h>
51c66d2b38SJung-uk Kim #endif
52eeb3a05fSNate Lawson #include <sys/smp.h>
53c66d2b38SJung-uk Kim #include <sys/timetc.h>
5415e32d5dSMike Smith 
55d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
56d320e05cSJohn Baldwin #include <machine/pci_cfgreg.h>
57d320e05cSJohn Baldwin #endif
5815e32d5dSMike Smith #include <machine/resource.h>
59dc750869SNate Lawson #include <machine/bus.h>
60dc750869SNate Lawson #include <sys/rman.h>
61bc0f2195SMike Smith #include <isa/isavar.h>
62c796e27bSNate Lawson #include <isa/pnpvar.h>
63bc0f2195SMike Smith 
64129d3046SJung-uk Kim #include <contrib/dev/acpica/include/acpi.h>
65129d3046SJung-uk Kim #include <contrib/dev/acpica/include/accommon.h>
66129d3046SJung-uk Kim #include <contrib/dev/acpica/include/acnamesp.h>
67129d3046SJung-uk Kim 
6815e32d5dSMike Smith #include <dev/acpica/acpivar.h>
6915e32d5dSMike Smith #include <dev/acpica/acpiio.h>
7015e32d5dSMike Smith 
7110ce62b9SNate Lawson #include "pci_if.h"
7210ce62b9SNate Lawson #include <dev/pci/pcivar.h>
7310ce62b9SNate Lawson #include <dev/pci/pci_private.h>
7410ce62b9SNate Lawson 
752be4e471SJung-uk Kim #include <vm/vm_param.h>
762be4e471SJung-uk Kim 
7715e32d5dSMike Smith MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
7815e32d5dSMike Smith 
79be2b1797SNate Lawson /* Hooks for the ACPI CA debugging infrastructure */
80cb9b0d80SMike Smith #define _COMPONENT	ACPI_BUS
81b53f2771SMike Smith ACPI_MODULE_NAME("ACPI")
820ae55423SMike Smith 
8315e32d5dSMike Smith static d_open_t		acpiopen;
8415e32d5dSMike Smith static d_close_t	acpiclose;
8515e32d5dSMike Smith static d_ioctl_t	acpiioctl;
8615e32d5dSMike Smith 
8715e32d5dSMike Smith static struct cdevsw acpi_cdevsw = {
88dc08ffecSPoul-Henning Kamp 	.d_version =	D_VERSION,
897ac40f5fSPoul-Henning Kamp 	.d_open =	acpiopen,
907ac40f5fSPoul-Henning Kamp 	.d_close =	acpiclose,
917ac40f5fSPoul-Henning Kamp 	.d_ioctl =	acpiioctl,
927ac40f5fSPoul-Henning Kamp 	.d_name =	"acpi",
9315e32d5dSMike Smith };
9415e32d5dSMike Smith 
95346eda4fSNate Lawson /* Global mutex for locking access to the ACPI subsystem. */
96cb9b0d80SMike Smith struct mtx	acpi_mutex;
97cb9b0d80SMike Smith 
9889fb5af8SNate Lawson /* Bitmap of device quirks. */
9989fb5af8SNate Lawson int		acpi_quirks;
10089fb5af8SNate Lawson 
101a0e73a12SJung-uk Kim /* Supported sleep states. */
102a0e73a12SJung-uk Kim static BOOLEAN	acpi_sleep_states[ACPI_S_STATE_COUNT];
103a0e73a12SJung-uk Kim 
1046d63101aSMike Smith static int	acpi_modevent(struct module *mod, int event, void *junk);
10515e32d5dSMike Smith static int	acpi_probe(device_t dev);
10615e32d5dSMike Smith static int	acpi_attach(device_t dev);
10710ce62b9SNate Lawson static int	acpi_suspend(device_t dev);
10810ce62b9SNate Lawson static int	acpi_resume(device_t dev);
109169b539aSNate Lawson static int	acpi_shutdown(device_t dev);
110be2b1797SNate Lawson static device_t	acpi_add_child(device_t bus, int order, const char *name,
111be2b1797SNate Lawson 			int unit);
11215e32d5dSMike Smith static int	acpi_print_child(device_t bus, device_t child);
11310ce62b9SNate Lawson static void	acpi_probe_nomatch(device_t bus, device_t child);
11410ce62b9SNate Lawson static void	acpi_driver_added(device_t dev, driver_t *driver);
115be2b1797SNate Lawson static int	acpi_read_ivar(device_t dev, device_t child, int index,
116be2b1797SNate Lawson 			uintptr_t *result);
117be2b1797SNate Lawson static int	acpi_write_ivar(device_t dev, device_t child, int index,
118be2b1797SNate Lawson 			uintptr_t value);
11991233413SNate Lawson static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
120adad4744SNate Lawson static int	acpi_sysres_alloc(device_t dev);
121be2b1797SNate Lawson static struct resource *acpi_alloc_resource(device_t bus, device_t child,
122be2b1797SNate Lawson 			int type, int *rid, u_long start, u_long end,
123be2b1797SNate Lawson 			u_long count, u_int flags);
124be2b1797SNate Lawson static int	acpi_release_resource(device_t bus, device_t child, int type,
125be2b1797SNate Lawson 			int rid, struct resource *r);
1268b28b622SNate Lawson static void	acpi_delete_resource(device_t bus, device_t child, int type,
1278b28b622SNate Lawson 		    int rid);
1281e4925e8SNate Lawson static uint32_t	acpi_isa_get_logicalid(device_t dev);
1291e4925e8SNate Lawson static int	acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
130ce619b2eSNate Lawson static char	*acpi_device_id_probe(device_t bus, device_t dev, char **ids);
131ce619b2eSNate Lawson static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
132ce619b2eSNate Lawson 		    ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
133ce619b2eSNate Lawson 		    ACPI_BUFFER *ret);
13410ce62b9SNate Lawson static int	acpi_device_pwr_for_sleep(device_t bus, device_t dev,
13510ce62b9SNate Lawson 		    int *dstate);
136df8d2a32SNate Lawson static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
137df8d2a32SNate Lawson 		    void *context, void **retval);
138df8d2a32SNate Lawson static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
139df8d2a32SNate Lawson 		    int max_depth, acpi_scan_cb_t user_fn, void *arg);
14010ce62b9SNate Lawson static int	acpi_set_powerstate_method(device_t bus, device_t child,
14110ce62b9SNate Lawson 		    int state);
142be2b1797SNate Lawson static int	acpi_isa_pnp_probe(device_t bus, device_t child,
143be2b1797SNate Lawson 		    struct isa_pnp_id *ids);
14415e32d5dSMike Smith static void	acpi_probe_children(device_t bus);
145d227204dSJohn Baldwin static void	acpi_probe_order(ACPI_HANDLE handle, int *order);
146be2b1797SNate Lawson static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
147be2b1797SNate Lawson 		    void *context, void **status);
148ce619b2eSNate Lawson static BOOLEAN	acpi_MatchHid(ACPI_HANDLE h, const char *hid);
149a0e73a12SJung-uk Kim static void	acpi_sleep_enable(void *arg);
150a0e73a12SJung-uk Kim static ACPI_STATUS acpi_sleep_disable(struct acpi_softc *sc);
15100a30448SNate Lawson static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
15215e32d5dSMike Smith static void	acpi_shutdown_final(void *arg, int howto);
15313d4f7baSMitsuru IWASAKI static void	acpi_enable_fixed_events(struct acpi_softc *sc);
154d4b9ff91SNate Lawson static int	acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
155d4b9ff91SNate Lawson static int	acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
156d4b9ff91SNate Lawson static int	acpi_wake_prep_walk(int sstate);
15788a79fc0SNate Lawson static int	acpi_wake_sysctl_walk(device_t dev);
15888a79fc0SNate Lawson static int	acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
15915e32d5dSMike Smith static void	acpi_system_eventhandler_sleep(void *arg, int state);
16015e32d5dSMike Smith static void	acpi_system_eventhandler_wakeup(void *arg, int state);
161a0e73a12SJung-uk Kim static int	acpi_sname2sstate(const char *sname);
162a0e73a12SJung-uk Kim static const char *acpi_sstate2sname(int sstate);
163d75de536SMitsuru IWASAKI static int	acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
1641d073b1dSJohn Baldwin static int	acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
165f9390180SMitsuru IWASAKI static int	acpi_pm_func(u_long cmd, void *arg, ...);
166879d6c23STakanori Watanabe static int	acpi_child_location_str_method(device_t acdev, device_t child,
167879d6c23STakanori Watanabe 					       char *buf, size_t buflen);
168879d6c23STakanori Watanabe static int	acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
169879d6c23STakanori Watanabe 					      char *buf, size_t buflen);
170d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
171d320e05cSJohn Baldwin static void	acpi_enable_pcie(void);
172d320e05cSJohn Baldwin #endif
1730d484d24SJohn Baldwin static void	acpi_hint_device_unit(device_t acdev, device_t child,
1740d484d24SJohn Baldwin 		    const char *name, int *unitp);
175879d6c23STakanori Watanabe 
17615e32d5dSMike Smith static device_method_t acpi_methods[] = {
17715e32d5dSMike Smith     /* Device interface */
17815e32d5dSMike Smith     DEVMETHOD(device_probe,		acpi_probe),
17915e32d5dSMike Smith     DEVMETHOD(device_attach,		acpi_attach),
180169b539aSNate Lawson     DEVMETHOD(device_shutdown,		acpi_shutdown),
18156a70eadSNate Lawson     DEVMETHOD(device_detach,		bus_generic_detach),
18210ce62b9SNate Lawson     DEVMETHOD(device_suspend,		acpi_suspend),
18310ce62b9SNate Lawson     DEVMETHOD(device_resume,		acpi_resume),
18415e32d5dSMike Smith 
18515e32d5dSMike Smith     /* Bus interface */
18615e32d5dSMike Smith     DEVMETHOD(bus_add_child,		acpi_add_child),
18715e32d5dSMike Smith     DEVMETHOD(bus_print_child,		acpi_print_child),
18810ce62b9SNate Lawson     DEVMETHOD(bus_probe_nomatch,	acpi_probe_nomatch),
18910ce62b9SNate Lawson     DEVMETHOD(bus_driver_added,		acpi_driver_added),
19015e32d5dSMike Smith     DEVMETHOD(bus_read_ivar,		acpi_read_ivar),
19115e32d5dSMike Smith     DEVMETHOD(bus_write_ivar,		acpi_write_ivar),
19291233413SNate Lawson     DEVMETHOD(bus_get_resource_list,	acpi_get_rlist),
19391233413SNate Lawson     DEVMETHOD(bus_set_resource,		bus_generic_rl_set_resource),
19491233413SNate Lawson     DEVMETHOD(bus_get_resource,		bus_generic_rl_get_resource),
19515e32d5dSMike Smith     DEVMETHOD(bus_alloc_resource,	acpi_alloc_resource),
19615e32d5dSMike Smith     DEVMETHOD(bus_release_resource,	acpi_release_resource),
1978b28b622SNate Lawson     DEVMETHOD(bus_delete_resource,	acpi_delete_resource),
198879d6c23STakanori Watanabe     DEVMETHOD(bus_child_pnpinfo_str,	acpi_child_pnpinfo_str_method),
199879d6c23STakanori Watanabe     DEVMETHOD(bus_child_location_str,	acpi_child_location_str_method),
20015e32d5dSMike Smith     DEVMETHOD(bus_activate_resource,	bus_generic_activate_resource),
20115e32d5dSMike Smith     DEVMETHOD(bus_deactivate_resource,	bus_generic_deactivate_resource),
20215e32d5dSMike Smith     DEVMETHOD(bus_setup_intr,		bus_generic_setup_intr),
20315e32d5dSMike Smith     DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),
2040d484d24SJohn Baldwin     DEVMETHOD(bus_hint_device_unit,	acpi_hint_device_unit),
20515e32d5dSMike Smith 
206ce619b2eSNate Lawson     /* ACPI bus */
207ce619b2eSNate Lawson     DEVMETHOD(acpi_id_probe,		acpi_device_id_probe),
208ce619b2eSNate Lawson     DEVMETHOD(acpi_evaluate_object,	acpi_device_eval_obj),
20910ce62b9SNate Lawson     DEVMETHOD(acpi_pwr_for_sleep,	acpi_device_pwr_for_sleep),
210df8d2a32SNate Lawson     DEVMETHOD(acpi_scan_children,	acpi_device_scan_children),
211ce619b2eSNate Lawson 
21210ce62b9SNate Lawson     /* PCI emulation */
21310ce62b9SNate Lawson     DEVMETHOD(pci_set_powerstate,	acpi_set_powerstate_method),
21410ce62b9SNate Lawson 
215bc0f2195SMike Smith     /* ISA emulation */
216bc0f2195SMike Smith     DEVMETHOD(isa_pnp_probe,		acpi_isa_pnp_probe),
217bc0f2195SMike Smith 
21815e32d5dSMike Smith     {0, 0}
21915e32d5dSMike Smith };
22015e32d5dSMike Smith 
22115e32d5dSMike Smith static driver_t acpi_driver = {
22215e32d5dSMike Smith     "acpi",
22315e32d5dSMike Smith     acpi_methods,
22415e32d5dSMike Smith     sizeof(struct acpi_softc),
22515e32d5dSMike Smith };
22615e32d5dSMike Smith 
2273273b005SMike Smith static devclass_t acpi_devclass;
2286d63101aSMike Smith DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
229a4ecd543SNate Lawson MODULE_VERSION(acpi, 1);
23015e32d5dSMike Smith 
23115e2f34fSNate Lawson ACPI_SERIAL_DECL(acpi, "ACPI root bus");
23215e2f34fSNate Lawson 
233adad4744SNate Lawson /* Local pools for managing system resources for ACPI child devices. */
234adad4744SNate Lawson static struct rman acpi_rman_io, acpi_rman_mem;
235adad4744SNate Lawson 
236bee4aa4aSNate Lawson #define ACPI_MINIMUM_AWAKETIME	5
237bee4aa4aSNate Lawson 
2385217af30SJohn Baldwin /* Holds the description of the acpi0 device. */
2395217af30SJohn Baldwin static char acpi_desc[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
2405217af30SJohn Baldwin 
241197b4dccSNate Lawson SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
2421d7b121cSNate Lawson static char acpi_ca_version[12];
2431d7b121cSNate Lawson SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
2441d7b121cSNate Lawson 	      acpi_ca_version, 0, "Version of Intel ACPI-CA");
24515e32d5dSMike Smith 
24615e32d5dSMike Smith /*
247413081d7SNate Lawson  * Allow override of whether methods execute in parallel or not.
248c9b8d77dSNate Lawson  * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
249c9b8d77dSNate Lawson  * errors for AML that really can't handle parallel method execution.
250c9b8d77dSNate Lawson  * It is off by default since this breaks recursive methods and
251c9b8d77dSNate Lawson  * some IBMs use such code.
252413081d7SNate Lawson  */
253c9b8d77dSNate Lawson static int acpi_serialize_methods;
254413081d7SNate Lawson TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods);
255413081d7SNate Lawson 
25610ce62b9SNate Lawson /* Power devices off and on in suspend and resume.  XXX Remove once tested. */
25710ce62b9SNate Lawson static int acpi_do_powerstate = 1;
25810ce62b9SNate Lawson TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate);
25910ce62b9SNate Lawson SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW,
26010ce62b9SNate Lawson     &acpi_do_powerstate, 1, "Turn off devices when suspending.");
26110ce62b9SNate Lawson 
2620755473bSJung-uk Kim /* Reset system clock while resuming.  XXX Remove once tested. */
2630755473bSJung-uk Kim static int acpi_reset_clock = 1;
2640755473bSJung-uk Kim TUNABLE_INT("debug.acpi.reset_clock", &acpi_reset_clock);
2650755473bSJung-uk Kim SYSCTL_INT(_debug_acpi, OID_AUTO, reset_clock, CTLFLAG_RW,
2660755473bSJung-uk Kim     &acpi_reset_clock, 1, "Reset system clock while resuming.");
2670755473bSJung-uk Kim 
26839da3eb3SNate Lawson /* Allow users to override quirks. */
26939da3eb3SNate Lawson TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
27039da3eb3SNate Lawson 
27193bfd059SNate Lawson static int acpi_susp_bounce;
27293bfd059SNate Lawson SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
27393bfd059SNate Lawson     &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
27493bfd059SNate Lawson 
275c9b8d77dSNate Lawson /*
2766d63101aSMike Smith  * ACPI can only be loaded as a module by the loader; activating it after
2776d63101aSMike Smith  * system bootstrap time is not useful, and can be fatal to the system.
2788c0879b6SJohn Baldwin  * It also cannot be unloaded, since the entire system bus hierarchy hangs
279be2b1797SNate Lawson  * off it.
2806d63101aSMike Smith  */
2816d63101aSMike Smith static int
2826d63101aSMike Smith acpi_modevent(struct module *mod, int event, void *junk)
2836d63101aSMike Smith {
2846d63101aSMike Smith     switch (event) {
2856d63101aSMike Smith     case MOD_LOAD:
28687b45ed5SMitsuru IWASAKI 	if (!cold) {
28787b45ed5SMitsuru IWASAKI 	    printf("The ACPI driver cannot be loaded after boot.\n");
2886d63101aSMike Smith 	    return (EPERM);
28987b45ed5SMitsuru IWASAKI 	}
2906d63101aSMike Smith 	break;
2916d63101aSMike Smith     case MOD_UNLOAD:
292f9390180SMitsuru IWASAKI 	if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
2936d63101aSMike Smith 	    return (EBUSY);
294f9390180SMitsuru IWASAKI 	break;
2956d63101aSMike Smith     default:
2966d63101aSMike Smith 	break;
2976d63101aSMike Smith     }
2986d63101aSMike Smith     return (0);
2996d63101aSMike Smith }
3006d63101aSMike Smith 
3016d63101aSMike Smith /*
302bbc2815cSJohn Baldwin  * Perform early initialization.
30315e32d5dSMike Smith  */
304bbc2815cSJohn Baldwin ACPI_STATUS
305bbc2815cSJohn Baldwin acpi_Startup(void)
30615e32d5dSMike Smith {
30789fb5af8SNate Lawson     static int started = 0;
3082be4e471SJung-uk Kim     ACPI_STATUS status;
3092be4e471SJung-uk Kim     int val;
31015e32d5dSMike Smith 
3111b8c233dSPeter Pentchev     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3121b8c233dSPeter Pentchev 
313bee4aa4aSNate Lawson     /* Only run the startup code once.  The MADT driver also calls this. */
314bbc2815cSJohn Baldwin     if (started)
3152be4e471SJung-uk Kim 	return_VALUE (AE_OK);
316bbc2815cSJohn Baldwin     started = 1;
31715e32d5dSMike Smith 
318413081d7SNate Lawson     /*
3192be4e471SJung-uk Kim      * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
3202be4e471SJung-uk Kim      * if more tables exist.
321413081d7SNate Lawson      */
3222be4e471SJung-uk Kim     if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
3232be4e471SJung-uk Kim 	printf("ACPI: Table initialisation failed: %s\n",
3242be4e471SJung-uk Kim 	    AcpiFormatException(status));
3252be4e471SJung-uk Kim 	return_VALUE (status);
32615e32d5dSMike Smith     }
3273184cf5aSNate Lawson 
32889fb5af8SNate Lawson     /* Set up any quirks we have for this system. */
3292be4e471SJung-uk Kim     if (acpi_quirks == ACPI_Q_OK)
33089fb5af8SNate Lawson 	acpi_table_quirks(&acpi_quirks);
33189fb5af8SNate Lawson 
33239da3eb3SNate Lawson     /* If the user manually set the disabled hint to 0, force-enable ACPI. */
33389fb5af8SNate Lawson     if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
33489fb5af8SNate Lawson 	acpi_quirks &= ~ACPI_Q_BROKEN;
33589fb5af8SNate Lawson     if (acpi_quirks & ACPI_Q_BROKEN) {
33689fb5af8SNate Lawson 	printf("ACPI disabled by blacklist.  Contact your BIOS vendor.\n");
3372be4e471SJung-uk Kim 	status = AE_SUPPORT;
33889fb5af8SNate Lawson     }
3393184cf5aSNate Lawson 
3402be4e471SJung-uk Kim     return_VALUE (status);
341bbc2815cSJohn Baldwin }
342bbc2815cSJohn Baldwin 
343bbc2815cSJohn Baldwin /*
3445217af30SJohn Baldwin  * Detect ACPI and perform early initialisation.
345bbc2815cSJohn Baldwin  */
3465217af30SJohn Baldwin int
3475217af30SJohn Baldwin acpi_identify(void)
348bbc2815cSJohn Baldwin {
3495217af30SJohn Baldwin     ACPI_TABLE_RSDP	*rsdp;
3505217af30SJohn Baldwin     ACPI_TABLE_HEADER	*rsdt;
3515217af30SJohn Baldwin     ACPI_PHYSICAL_ADDRESS paddr;
3525217af30SJohn Baldwin     struct sbuf		sb;
353bbc2815cSJohn Baldwin 
354bbc2815cSJohn Baldwin     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
355bbc2815cSJohn Baldwin 
356bbc2815cSJohn Baldwin     if (!cold)
3575217af30SJohn Baldwin 	return (ENXIO);
358bbc2815cSJohn Baldwin 
359bbc2815cSJohn Baldwin     /* Check that we haven't been disabled with a hint. */
360bbc2815cSJohn Baldwin     if (resource_disabled("acpi", 0))
3615217af30SJohn Baldwin 	return (ENXIO);
362bbc2815cSJohn Baldwin 
3635217af30SJohn Baldwin     /* Check for other PM systems. */
3645217af30SJohn Baldwin     if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
3655217af30SJohn Baldwin 	power_pm_get_type() != POWER_PM_TYPE_ACPI) {
3665217af30SJohn Baldwin 	printf("ACPI identify failed, other PM system enabled.\n");
3675217af30SJohn Baldwin 	return (ENXIO);
3685217af30SJohn Baldwin     }
3694b1ff978SMark Santcroos 
3702be4e471SJung-uk Kim     /* Initialize root tables. */
3712be4e471SJung-uk Kim     if (ACPI_FAILURE(acpi_Startup())) {
3722be4e471SJung-uk Kim 	printf("ACPI: Try disabling either ACPI or apic support.\n");
3735217af30SJohn Baldwin 	return (ENXIO);
3742be4e471SJung-uk Kim     }
37515e32d5dSMike Smith 
3765217af30SJohn Baldwin     if ((paddr = AcpiOsGetRootPointer()) == 0 ||
3775217af30SJohn Baldwin 	(rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
3785217af30SJohn Baldwin 	return (ENXIO);
3795217af30SJohn Baldwin     if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
3805217af30SJohn Baldwin 	paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
3815217af30SJohn Baldwin     else
3825217af30SJohn Baldwin 	paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
3835217af30SJohn Baldwin     AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
3845217af30SJohn Baldwin 
3855217af30SJohn Baldwin     if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
3865217af30SJohn Baldwin 	return (ENXIO);
3875217af30SJohn Baldwin     sbuf_new(&sb, acpi_desc, sizeof(acpi_desc), SBUF_FIXEDLEN);
3885217af30SJohn Baldwin     sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
3895217af30SJohn Baldwin     sbuf_trim(&sb);
3905217af30SJohn Baldwin     sbuf_putc(&sb, ' ');
3915217af30SJohn Baldwin     sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
3925217af30SJohn Baldwin     sbuf_trim(&sb);
3935217af30SJohn Baldwin     sbuf_finish(&sb);
3945217af30SJohn Baldwin     sbuf_delete(&sb);
3955217af30SJohn Baldwin     AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
3965217af30SJohn Baldwin 
3975217af30SJohn Baldwin     snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
3985217af30SJohn Baldwin 
3995217af30SJohn Baldwin     return (0);
40015e32d5dSMike Smith }
40115e32d5dSMike Smith 
40215e32d5dSMike Smith /*
403bee4aa4aSNate Lawson  * Fetch some descriptive data from ACPI to put in our attach message.
40415e32d5dSMike Smith  */
40515e32d5dSMike Smith static int
40615e32d5dSMike Smith acpi_probe(device_t dev)
40715e32d5dSMike Smith {
40815e32d5dSMike Smith 
409b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
410f9390180SMitsuru IWASAKI 
4115217af30SJohn Baldwin     device_set_desc(dev, acpi_desc);
412bee4aa4aSNate Lawson 
4132be4e471SJung-uk Kim     return_VALUE (0);
41415e32d5dSMike Smith }
41515e32d5dSMike Smith 
41615e32d5dSMike Smith static int
41715e32d5dSMike Smith acpi_attach(device_t dev)
41815e32d5dSMike Smith {
41915e32d5dSMike Smith     struct acpi_softc	*sc;
420cb9b0d80SMike Smith     ACPI_STATUS		status;
421ea27c63eSNate Lawson     int			error, state;
42232d18aa5SMike Smith     UINT32		flags;
423ea27c63eSNate Lawson     UINT8		TypeA, TypeB;
424498d464fSMitsuru IWASAKI     char		*env;
42515e32d5dSMike Smith 
426b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
427bee4aa4aSNate Lawson 
42815e32d5dSMike Smith     sc = device_get_softc(dev);
42915e32d5dSMike Smith     sc->acpi_dev = dev;
43000a30448SNate Lawson     callout_init(&sc->susp_force_to, TRUE);
43115e32d5dSMike Smith 
4322be4e471SJung-uk Kim     error = ENXIO;
4332be4e471SJung-uk Kim 
43491233413SNate Lawson     /* Initialize resource manager. */
43591233413SNate Lawson     acpi_rman_io.rm_type = RMAN_ARRAY;
43691233413SNate Lawson     acpi_rman_io.rm_start = 0;
43791233413SNate Lawson     acpi_rman_io.rm_end = 0xffff;
4380bba6acfSJohn Baldwin     acpi_rman_io.rm_descr = "ACPI I/O ports";
43991233413SNate Lawson     if (rman_init(&acpi_rman_io) != 0)
44091233413SNate Lawson 	panic("acpi rman_init IO ports failed");
44191233413SNate Lawson     acpi_rman_mem.rm_type = RMAN_ARRAY;
44291233413SNate Lawson     acpi_rman_mem.rm_start = 0;
44391233413SNate Lawson     acpi_rman_mem.rm_end = ~0ul;
4440bba6acfSJohn Baldwin     acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
44591233413SNate Lawson     if (rman_init(&acpi_rman_mem) != 0)
44691233413SNate Lawson 	panic("acpi rman_init memory failed");
44791233413SNate Lawson 
4482be4e471SJung-uk Kim     /* Initialise the ACPI mutex */
4492be4e471SJung-uk Kim     mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
4502be4e471SJung-uk Kim 
4512be4e471SJung-uk Kim     /*
4522be4e471SJung-uk Kim      * Set the globals from our tunables.  This is needed because ACPI-CA
4532be4e471SJung-uk Kim      * uses UINT8 for some values and we have no tunable_byte.
4542be4e471SJung-uk Kim      */
4552be4e471SJung-uk Kim     AcpiGbl_AllMethodsSerialized = acpi_serialize_methods;
4562be4e471SJung-uk Kim     AcpiGbl_EnableInterpreterSlack = TRUE;
4572be4e471SJung-uk Kim 
4582be4e471SJung-uk Kim     /* Start up the ACPI CA subsystem. */
4592be4e471SJung-uk Kim     status = AcpiInitializeSubsystem();
4602be4e471SJung-uk Kim     if (ACPI_FAILURE(status)) {
4612be4e471SJung-uk Kim 	device_printf(dev, "Could not initialize Subsystem: %s\n",
4622be4e471SJung-uk Kim 		      AcpiFormatException(status));
4632be4e471SJung-uk Kim 	goto out;
4642be4e471SJung-uk Kim     }
4652be4e471SJung-uk Kim 
4662be4e471SJung-uk Kim     /* Load ACPI name space. */
4672be4e471SJung-uk Kim     status = AcpiLoadTables();
4682be4e471SJung-uk Kim     if (ACPI_FAILURE(status)) {
4692be4e471SJung-uk Kim 	device_printf(dev, "Could not load Namespace: %s\n",
4702be4e471SJung-uk Kim 		      AcpiFormatException(status));
4712be4e471SJung-uk Kim 	goto out;
4722be4e471SJung-uk Kim     }
4732be4e471SJung-uk Kim 
474d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
475d320e05cSJohn Baldwin     /* Handle MCFG table if present. */
476d320e05cSJohn Baldwin     acpi_enable_pcie();
477d320e05cSJohn Baldwin #endif
478d320e05cSJohn Baldwin 
479be2b1797SNate Lawson     /* Install the default address space handlers. */
480be2b1797SNate Lawson     status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
481be2b1797SNate Lawson 		ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
482be2b1797SNate Lawson     if (ACPI_FAILURE(status)) {
483be2b1797SNate Lawson 	device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
484be2b1797SNate Lawson 		      AcpiFormatException(status));
485cb9b0d80SMike Smith 	goto out;
48615e32d5dSMike Smith     }
487be2b1797SNate Lawson     status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
488be2b1797SNate Lawson 		ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
489be2b1797SNate Lawson     if (ACPI_FAILURE(status)) {
490be2b1797SNate Lawson 	device_printf(dev, "Could not initialise SystemIO handler: %s\n",
491be2b1797SNate Lawson 		      AcpiFormatException(status));
492cb9b0d80SMike Smith 	goto out;
49315e32d5dSMike Smith     }
494be2b1797SNate Lawson     status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
495be2b1797SNate Lawson 		ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
496be2b1797SNate Lawson     if (ACPI_FAILURE(status)) {
497be2b1797SNate Lawson 	device_printf(dev, "could not initialise PciConfig handler: %s\n",
498be2b1797SNate Lawson 		      AcpiFormatException(status));
499cb9b0d80SMike Smith 	goto out;
50015e32d5dSMike Smith     }
50115e32d5dSMike Smith 
50215e32d5dSMike Smith     /*
503be2b1797SNate Lawson      * Note that some systems (specifically, those with namespace evaluation
504be2b1797SNate Lawson      * issues that require the avoidance of parts of the namespace) must
505be2b1797SNate Lawson      * avoid running _INI and _STA on everything, as well as dodging the final
506be2b1797SNate Lawson      * object init pass.
50715e32d5dSMike Smith      *
50832d18aa5SMike Smith      * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
50932d18aa5SMike Smith      *
510be2b1797SNate Lawson      * XXX We should arrange for the object init pass after we have attached
511be2b1797SNate Lawson      *     all our child devices, but on many systems it works here.
51215e32d5dSMike Smith      */
51332d18aa5SMike Smith     flags = 0;
514d786139cSMaxime Henrion     if (testenv("debug.acpi.avoid"))
51532d18aa5SMike Smith 	flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
516bee4aa4aSNate Lawson 
517bee4aa4aSNate Lawson     /* Bring the hardware and basic handlers online. */
518b53f2771SMike Smith     if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
519be2b1797SNate Lawson 	device_printf(dev, "Could not enable ACPI: %s\n",
520be2b1797SNate Lawson 		      AcpiFormatException(status));
521cb9b0d80SMike Smith 	goto out;
52215e32d5dSMike Smith     }
52315e32d5dSMike Smith 
524f8335e3aSNate Lawson     /*
525f8335e3aSNate Lawson      * Call the ECDT probe function to provide EC functionality before
526f8335e3aSNate Lawson      * the namespace has been evaluated.
527da72d149SNate Lawson      *
528da72d149SNate Lawson      * XXX This happens before the sysresource devices have been probed and
529da72d149SNate Lawson      * attached so its resources come from nexus0.  In practice, this isn't
530da72d149SNate Lawson      * a problem but should be addressed eventually.
531f8335e3aSNate Lawson      */
532f8335e3aSNate Lawson     acpi_ec_ecdt_probe(dev);
533f8335e3aSNate Lawson 
534bee4aa4aSNate Lawson     /* Bring device objects and regions online. */
535b69ed3f4SMitsuru IWASAKI     if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
536be2b1797SNate Lawson 	device_printf(dev, "Could not initialize ACPI objects: %s\n",
537be2b1797SNate Lawson 		      AcpiFormatException(status));
538b69ed3f4SMitsuru IWASAKI 	goto out;
539b69ed3f4SMitsuru IWASAKI     }
540b69ed3f4SMitsuru IWASAKI 
54115e32d5dSMike Smith     /*
5421d073b1dSJohn Baldwin      * Setup our sysctl tree.
5431d073b1dSJohn Baldwin      *
5441d073b1dSJohn Baldwin      * XXX: This doesn't check to make sure that none of these fail.
5451d073b1dSJohn Baldwin      */
5461d073b1dSJohn Baldwin     sysctl_ctx_init(&sc->acpi_sysctl_ctx);
5471d073b1dSJohn Baldwin     sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
5481d073b1dSJohn Baldwin 			       SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
5491d073b1dSJohn Baldwin 			       device_get_name(dev), CTLFLAG_RD, 0, "");
5501d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
551d75de536SMitsuru IWASAKI 	OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
552d75de536SMitsuru IWASAKI 	0, 0, acpi_supported_sleep_state_sysctl, "A", "");
553d75de536SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5541d073b1dSJohn Baldwin 	OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
5551d073b1dSJohn Baldwin 	&sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
5561d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5571d073b1dSJohn Baldwin 	OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
5581d073b1dSJohn Baldwin 	&sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
5591d073b1dSJohn Baldwin     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
5601d073b1dSJohn Baldwin 	OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
5611d073b1dSJohn Baldwin 	&sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
562f86214b6SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
563f86214b6SMitsuru IWASAKI 	OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
564f86214b6SMitsuru IWASAKI 	&sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
565f86214b6SMitsuru IWASAKI     SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
566f86214b6SMitsuru IWASAKI 	OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
567f86214b6SMitsuru IWASAKI 	&sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
5682d644607SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
569197b4dccSNate Lawson 	OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
570197b4dccSNate Lawson 	"sleep delay");
571ff01efb5SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
572197b4dccSNate Lawson 	OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
5731611ea87SMitsuru IWASAKI     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
574197b4dccSNate Lawson 	OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
575d85e6785SNate Lawson     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
576d85e6785SNate Lawson 	OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
577d85e6785SNate Lawson 	&sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
578d1b16e18SNate Lawson     SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
579d1b16e18SNate Lawson 	OID_AUTO, "handle_reboot", CTLFLAG_RW,
580d1b16e18SNate Lawson 	&sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
581bf0c18ecSNate Lawson 
582bf0c18ecSNate Lawson     /*
5832b9609abSNate Lawson      * Default to 1 second before sleeping to give some machines time to
584bf0c18ecSNate Lawson      * stabilize.
585bf0c18ecSNate Lawson      */
5862b9609abSNate Lawson     sc->acpi_sleep_delay = 1;
5872d644607SMitsuru IWASAKI     if (bootverbose)
5882d644607SMitsuru IWASAKI 	sc->acpi_verbose = 1;
589965a34fbSNate Lawson     if ((env = getenv("hw.acpi.verbose")) != NULL) {
590965a34fbSNate Lawson 	if (strcmp(env, "0") != 0)
591498d464fSMitsuru IWASAKI 	    sc->acpi_verbose = 1;
592498d464fSMitsuru IWASAKI 	freeenv(env);
593498d464fSMitsuru IWASAKI     }
5941d073b1dSJohn Baldwin 
5952d610c46SNate Lawson     /* Only enable S4BIOS by default if the FACS says it is available. */
596129d3046SJung-uk Kim     if (AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
5972d610c46SNate Lawson 	sc->acpi_s4bios = 1;
5982d610c46SNate Lawson 
599a0e73a12SJung-uk Kim     /* Probe all supported sleep states. */
600a0e73a12SJung-uk Kim     acpi_sleep_states[ACPI_STATE_S0] = TRUE;
601a0e73a12SJung-uk Kim     for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
602a0e73a12SJung-uk Kim 	if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
603a0e73a12SJung-uk Kim 	    acpi_sleep_states[state] = TRUE;
604a0e73a12SJung-uk Kim 
6051d073b1dSJohn Baldwin     /*
606ea27c63eSNate Lawson      * Dispatch the default sleep state to devices.  The lid switch is set
607a0e73a12SJung-uk Kim      * to UNKNOWN by default to avoid surprising users.
60815e32d5dSMike Smith      */
609a0e73a12SJung-uk Kim     sc->acpi_power_button_sx = acpi_sleep_states[ACPI_STATE_S5] ?
610a0e73a12SJung-uk Kim 	ACPI_STATE_S5 : ACPI_STATE_UNKNOWN;
611a0e73a12SJung-uk Kim     sc->acpi_lid_switch_sx = ACPI_STATE_UNKNOWN;
612a0e73a12SJung-uk Kim     sc->acpi_standby_sx = acpi_sleep_states[ACPI_STATE_S1] ?
613a0e73a12SJung-uk Kim 	ACPI_STATE_S1 : ACPI_STATE_UNKNOWN;
614a0e73a12SJung-uk Kim     sc->acpi_suspend_sx = acpi_sleep_states[ACPI_STATE_S3] ?
615a0e73a12SJung-uk Kim 	ACPI_STATE_S3 : ACPI_STATE_UNKNOWN;
61615e32d5dSMike Smith 
617ea27c63eSNate Lawson     /* Pick the first valid sleep state for the sleep button default. */
618a0e73a12SJung-uk Kim     sc->acpi_sleep_button_sx = ACPI_STATE_UNKNOWN;
61900a30448SNate Lawson     for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
620a0e73a12SJung-uk Kim 	if (acpi_sleep_states[state]) {
621ea27c63eSNate Lawson 	    sc->acpi_sleep_button_sx = state;
622ea27c63eSNate Lawson 	    break;
623ea27c63eSNate Lawson 	}
624ea27c63eSNate Lawson 
62513d4f7baSMitsuru IWASAKI     acpi_enable_fixed_events(sc);
62615e32d5dSMike Smith 
62715e32d5dSMike Smith     /*
62815e32d5dSMike Smith      * Scan the namespace and attach/initialise children.
62915e32d5dSMike Smith      */
63015e32d5dSMike Smith 
63159e472e9SNate Lawson     /* Register our shutdown handler. */
632be2b1797SNate Lawson     EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
633be2b1797SNate Lawson 	SHUTDOWN_PRI_LAST);
63415e32d5dSMike Smith 
63515e32d5dSMike Smith     /*
63615e32d5dSMike Smith      * Register our acpi event handlers.
63715e32d5dSMike Smith      * XXX should be configurable eg. via userland policy manager.
63815e32d5dSMike Smith      */
639be2b1797SNate Lawson     EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
640be2b1797SNate Lawson 	sc, ACPI_EVENT_PRI_LAST);
641be2b1797SNate Lawson     EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
642be2b1797SNate Lawson 	sc, ACPI_EVENT_PRI_LAST);
64315e32d5dSMike Smith 
644be2b1797SNate Lawson     /* Flag our initial states. */
645a0e73a12SJung-uk Kim     sc->acpi_enabled = TRUE;
64615e32d5dSMike Smith     sc->acpi_sstate = ACPI_STATE_S0;
647a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = TRUE;
64815e32d5dSMike Smith 
649be2b1797SNate Lawson     /* Create the control device */
650a89fcf28STakanori Watanabe     sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
6512a4689e8SRobert Watson 			      "acpi");
65215e32d5dSMike Smith     sc->acpi_dev_t->si_drv1 = sc;
65315e32d5dSMike Smith 
654be2b1797SNate Lawson     if ((error = acpi_machdep_init(dev)))
655f86214b6SMitsuru IWASAKI 	goto out;
656f86214b6SMitsuru IWASAKI 
657f9390180SMitsuru IWASAKI     /* Register ACPI again to pass the correct argument of pm_func. */
658f9390180SMitsuru IWASAKI     power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
659f9390180SMitsuru IWASAKI 
660eeb6dba2SJohn Baldwin     if (!acpi_disabled("bus"))
661eeb6dba2SJohn Baldwin 	acpi_probe_children(dev);
662eeb6dba2SJohn Baldwin 
663a0e73a12SJung-uk Kim     /* Allow sleep request after a while. */
664a0e73a12SJung-uk Kim     timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME);
665a0e73a12SJung-uk Kim 
666cb9b0d80SMike Smith     error = 0;
667cb9b0d80SMike Smith 
668cb9b0d80SMike Smith  out:
669cb9b0d80SMike Smith     return_VALUE (error);
67015e32d5dSMike Smith }
67115e32d5dSMike Smith 
672169b539aSNate Lawson static int
67310ce62b9SNate Lawson acpi_suspend(device_t dev)
67410ce62b9SNate Lawson {
67510ce62b9SNate Lawson     device_t child, *devlist;
67610ce62b9SNate Lawson     int error, i, numdevs, pstate;
67710ce62b9SNate Lawson 
6785d3d03f1SNate Lawson     GIANT_REQUIRED;
6795d3d03f1SNate Lawson 
68010ce62b9SNate Lawson     /* First give child devices a chance to suspend. */
68110ce62b9SNate Lawson     error = bus_generic_suspend(dev);
68210ce62b9SNate Lawson     if (error)
68310ce62b9SNate Lawson 	return (error);
68410ce62b9SNate Lawson 
68510ce62b9SNate Lawson     /*
68610ce62b9SNate Lawson      * Now, set them into the appropriate power state, usually D3.  If the
68710ce62b9SNate Lawson      * device has an _SxD method for the next sleep state, use that power
68810ce62b9SNate Lawson      * state instead.
68910ce62b9SNate Lawson      */
690099ea4b5SWarner Losh     error = device_get_children(dev, &devlist, &numdevs);
691099ea4b5SWarner Losh     if (error)
692099ea4b5SWarner Losh 	return (error);
69310ce62b9SNate Lawson     for (i = 0; i < numdevs; i++) {
69410ce62b9SNate Lawson 	/* If the device is not attached, we've powered it down elsewhere. */
69510ce62b9SNate Lawson 	child = devlist[i];
69610ce62b9SNate Lawson 	if (!device_is_attached(child))
69710ce62b9SNate Lawson 	    continue;
69810ce62b9SNate Lawson 
69910ce62b9SNate Lawson 	/*
70010ce62b9SNate Lawson 	 * Default to D3 for all sleep states.  The _SxD method is optional
70110ce62b9SNate Lawson 	 * so set the powerstate even if it's absent.
70210ce62b9SNate Lawson 	 */
70310ce62b9SNate Lawson 	pstate = PCI_POWERSTATE_D3;
70410ce62b9SNate Lawson 	error = acpi_device_pwr_for_sleep(device_get_parent(child),
70510ce62b9SNate Lawson 	    child, &pstate);
70610ce62b9SNate Lawson 	if ((error == 0 || error == ESRCH) && acpi_do_powerstate)
70710ce62b9SNate Lawson 	    pci_set_powerstate(child, pstate);
70810ce62b9SNate Lawson     }
70910ce62b9SNate Lawson     free(devlist, M_TEMP);
71010ce62b9SNate Lawson     error = 0;
71110ce62b9SNate Lawson 
71210ce62b9SNate Lawson     return (error);
71310ce62b9SNate Lawson }
71410ce62b9SNate Lawson 
71510ce62b9SNate Lawson static int
71610ce62b9SNate Lawson acpi_resume(device_t dev)
71710ce62b9SNate Lawson {
71810ce62b9SNate Lawson     ACPI_HANDLE handle;
719099ea4b5SWarner Losh     int i, numdevs, error;
72010ce62b9SNate Lawson     device_t child, *devlist;
72110ce62b9SNate Lawson 
7225d3d03f1SNate Lawson     GIANT_REQUIRED;
7235d3d03f1SNate Lawson 
72410ce62b9SNate Lawson     /*
72510ce62b9SNate Lawson      * Put all devices in D0 before resuming them.  Call _S0D on each one
72610ce62b9SNate Lawson      * since some systems expect this.
72710ce62b9SNate Lawson      */
728099ea4b5SWarner Losh     error = device_get_children(dev, &devlist, &numdevs);
729099ea4b5SWarner Losh     if (error)
730099ea4b5SWarner Losh 	return (error);
73110ce62b9SNate Lawson     for (i = 0; i < numdevs; i++) {
73210ce62b9SNate Lawson 	child = devlist[i];
73310ce62b9SNate Lawson 	handle = acpi_get_handle(child);
73410ce62b9SNate Lawson 	if (handle)
73510ce62b9SNate Lawson 	    AcpiEvaluateObject(handle, "_S0D", NULL, NULL);
73610ce62b9SNate Lawson 	if (device_is_attached(child) && acpi_do_powerstate)
73710ce62b9SNate Lawson 	    pci_set_powerstate(child, PCI_POWERSTATE_D0);
73810ce62b9SNate Lawson     }
73910ce62b9SNate Lawson     free(devlist, M_TEMP);
74010ce62b9SNate Lawson 
74110ce62b9SNate Lawson     return (bus_generic_resume(dev));
74210ce62b9SNate Lawson }
74310ce62b9SNate Lawson 
74410ce62b9SNate Lawson static int
745169b539aSNate Lawson acpi_shutdown(device_t dev)
746169b539aSNate Lawson {
747169b539aSNate Lawson 
7485d3d03f1SNate Lawson     GIANT_REQUIRED;
7495d3d03f1SNate Lawson 
7500e414868SNate Lawson     /* Allow children to shutdown first. */
7510e414868SNate Lawson     bus_generic_shutdown(dev);
7520e414868SNate Lawson 
753bee4aa4aSNate Lawson     /*
754bee4aa4aSNate Lawson      * Enable any GPEs that are able to power-on the system (i.e., RTC).
755bee4aa4aSNate Lawson      * Also, disable any that are not valid for this state (most).
756bee4aa4aSNate Lawson      */
757d4b9ff91SNate Lawson     acpi_wake_prep_walk(ACPI_STATE_S5);
758d4b9ff91SNate Lawson 
759169b539aSNate Lawson     return (0);
760169b539aSNate Lawson }
761169b539aSNate Lawson 
76215e32d5dSMike Smith /*
76315e32d5dSMike Smith  * Handle a new device being added
76415e32d5dSMike Smith  */
76515e32d5dSMike Smith static device_t
76615e32d5dSMike Smith acpi_add_child(device_t bus, int order, const char *name, int unit)
76715e32d5dSMike Smith {
76815e32d5dSMike Smith     struct acpi_device	*ad;
76915e32d5dSMike Smith     device_t		child;
77015e32d5dSMike Smith 
771be2b1797SNate Lawson     if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
77215e32d5dSMike Smith 	return (NULL);
77315e32d5dSMike Smith 
77415e32d5dSMike Smith     resource_list_init(&ad->ad_rl);
77515e32d5dSMike Smith 
77615e32d5dSMike Smith     child = device_add_child_ordered(bus, order, name, unit);
77715e32d5dSMike Smith     if (child != NULL)
77815e32d5dSMike Smith 	device_set_ivars(child, ad);
77943ce1c77SNate Lawson     else
78043ce1c77SNate Lawson 	free(ad, M_ACPIDEV);
78115e32d5dSMike Smith     return (child);
78215e32d5dSMike Smith }
78315e32d5dSMike Smith 
78415e32d5dSMike Smith static int
78515e32d5dSMike Smith acpi_print_child(device_t bus, device_t child)
78615e32d5dSMike Smith {
78715e32d5dSMike Smith     struct acpi_device	 *adev = device_get_ivars(child);
78815e32d5dSMike Smith     struct resource_list *rl = &adev->ad_rl;
78915e32d5dSMike Smith     int retval = 0;
79015e32d5dSMike Smith 
79115e32d5dSMike Smith     retval += bus_print_child_header(bus, child);
7929ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "port",  SYS_RES_IOPORT, "%#lx");
7939ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
7949ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "irq",   SYS_RES_IRQ,    "%ld");
7959ed79ecaSJohn Baldwin     retval += resource_list_print_type(rl, "drq",   SYS_RES_DRQ,    "%ld");
796a91c5fa8SNate Lawson     if (device_get_flags(child))
797a91c5fa8SNate Lawson 	retval += printf(" flags %#x", device_get_flags(child));
7982c8d3b23SNate Lawson     retval += bus_print_child_footer(bus, child);
79915e32d5dSMike Smith 
80015e32d5dSMike Smith     return (retval);
80115e32d5dSMike Smith }
80215e32d5dSMike Smith 
80310ce62b9SNate Lawson /*
80410ce62b9SNate Lawson  * If this device is an ACPI child but no one claimed it, attempt
80510ce62b9SNate Lawson  * to power it off.  We'll power it back up when a driver is added.
80610ce62b9SNate Lawson  *
80710ce62b9SNate Lawson  * XXX Disabled for now since many necessary devices (like fdc and
80810ce62b9SNate Lawson  * ATA) don't claim the devices we created for them but still expect
80910ce62b9SNate Lawson  * them to be powered up.
81010ce62b9SNate Lawson  */
81110ce62b9SNate Lawson static void
81210ce62b9SNate Lawson acpi_probe_nomatch(device_t bus, device_t child)
81310ce62b9SNate Lawson {
81496cf0b6dSWarner Losh #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
81596cf0b6dSWarner Losh     pci_set_powerstate(child, PCI_POWERSTATE_D3);
81696cf0b6dSWarner Losh #endif
81710ce62b9SNate Lawson }
81810ce62b9SNate Lawson 
81910ce62b9SNate Lawson /*
82010ce62b9SNate Lawson  * If a new driver has a chance to probe a child, first power it up.
82110ce62b9SNate Lawson  *
82210ce62b9SNate Lawson  * XXX Disabled for now (see acpi_probe_nomatch for details).
82310ce62b9SNate Lawson  */
82410ce62b9SNate Lawson static void
82510ce62b9SNate Lawson acpi_driver_added(device_t dev, driver_t *driver)
82610ce62b9SNate Lawson {
82710ce62b9SNate Lawson     device_t child, *devlist;
82810ce62b9SNate Lawson     int i, numdevs;
82910ce62b9SNate Lawson 
83010ce62b9SNate Lawson     DEVICE_IDENTIFY(driver, dev);
831099ea4b5SWarner Losh     if (device_get_children(dev, &devlist, &numdevs))
832099ea4b5SWarner Losh 	    return;
83310ce62b9SNate Lawson     for (i = 0; i < numdevs; i++) {
83410ce62b9SNate Lawson 	child = devlist[i];
83510ce62b9SNate Lawson 	if (device_get_state(child) == DS_NOTPRESENT) {
83696cf0b6dSWarner Losh #ifdef ACPI_ENABLE_POWERDOWN_NODRIVER
83796cf0b6dSWarner Losh 	    pci_set_powerstate(child, PCI_POWERSTATE_D0);
83810ce62b9SNate Lawson 	    if (device_probe_and_attach(child) != 0)
83996cf0b6dSWarner Losh 		pci_set_powerstate(child, PCI_POWERSTATE_D3);
84096cf0b6dSWarner Losh #else
84196cf0b6dSWarner Losh 	    device_probe_and_attach(child);
84296cf0b6dSWarner Losh #endif
84310ce62b9SNate Lawson 	}
84410ce62b9SNate Lawson     }
84510ce62b9SNate Lawson     free(devlist, M_TEMP);
84610ce62b9SNate Lawson }
84710ce62b9SNate Lawson 
84863600cc3SNate Lawson /* Location hint for devctl(8) */
84963600cc3SNate Lawson static int
850247648afSTakanori Watanabe acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
851247648afSTakanori Watanabe     size_t buflen)
852247648afSTakanori Watanabe {
853247648afSTakanori Watanabe     struct acpi_device *dinfo = device_get_ivars(child);
854247648afSTakanori Watanabe 
855247648afSTakanori Watanabe     if (dinfo->ad_handle)
856d40c0f53SNate Lawson 	snprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
857247648afSTakanori Watanabe     else
858d40c0f53SNate Lawson 	snprintf(buf, buflen, "unknown");
859247648afSTakanori Watanabe     return (0);
860247648afSTakanori Watanabe }
861247648afSTakanori Watanabe 
86263600cc3SNate Lawson /* PnP information for devctl(8) */
86363600cc3SNate Lawson static int
864247648afSTakanori Watanabe acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
865247648afSTakanori Watanabe     size_t buflen)
866247648afSTakanori Watanabe {
867247648afSTakanori Watanabe     ACPI_BUFFER adbuf = {ACPI_ALLOCATE_BUFFER, NULL};
86863600cc3SNate Lawson     ACPI_DEVICE_INFO *adinfo;
86963600cc3SNate Lawson     struct acpi_device *dinfo = device_get_ivars(child);
870247648afSTakanori Watanabe     char *end;
871247648afSTakanori Watanabe     int error;
872247648afSTakanori Watanabe 
873247648afSTakanori Watanabe     error = AcpiGetObjectInfo(dinfo->ad_handle, &adbuf);
874247648afSTakanori Watanabe     adinfo = (ACPI_DEVICE_INFO *) adbuf.Pointer;
875247648afSTakanori Watanabe     if (error)
876d40c0f53SNate Lawson 	snprintf(buf, buflen, "unknown");
877247648afSTakanori Watanabe     else
878247648afSTakanori Watanabe 	snprintf(buf, buflen, "_HID=%s _UID=%lu",
879247648afSTakanori Watanabe 		 (adinfo->Valid & ACPI_VALID_HID) ?
880d40c0f53SNate Lawson 		 adinfo->HardwareId.Value : "none",
88163600cc3SNate Lawson 		 (adinfo->Valid & ACPI_VALID_UID) ?
88263600cc3SNate Lawson 		 strtoul(adinfo->UniqueId.Value, &end, 10) : 0);
883247648afSTakanori Watanabe     if (adinfo)
884247648afSTakanori Watanabe 	AcpiOsFree(adinfo);
885247648afSTakanori Watanabe 
886247648afSTakanori Watanabe     return (0);
887247648afSTakanori Watanabe }
888247648afSTakanori Watanabe 
889247648afSTakanori Watanabe /*
89015e32d5dSMike Smith  * Handle per-device ivars
89115e32d5dSMike Smith  */
89215e32d5dSMike Smith static int
89315e32d5dSMike Smith acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
89415e32d5dSMike Smith {
89515e32d5dSMike Smith     struct acpi_device	*ad;
89615e32d5dSMike Smith 
89715e32d5dSMike Smith     if ((ad = device_get_ivars(child)) == NULL) {
8982d0c82e8SJung-uk Kim 	device_printf(child, "device has no ivars\n");
89915e32d5dSMike Smith 	return (ENOENT);
90015e32d5dSMike Smith     }
90115e32d5dSMike Smith 
902be2b1797SNate Lawson     /* ACPI and ISA compatibility ivars */
90315e32d5dSMike Smith     switch(index) {
90415e32d5dSMike Smith     case ACPI_IVAR_HANDLE:
90515e32d5dSMike Smith 	*(ACPI_HANDLE *)result = ad->ad_handle;
90615e32d5dSMike Smith 	break;
90715e32d5dSMike Smith     case ACPI_IVAR_MAGIC:
90870fa7bc0SNate Lawson 	*(uintptr_t *)result = ad->ad_magic;
90915e32d5dSMike Smith 	break;
91015e32d5dSMike Smith     case ACPI_IVAR_PRIVATE:
91115e32d5dSMike Smith 	*(void **)result = ad->ad_private;
91215e32d5dSMike Smith 	break;
913d4b9ff91SNate Lawson     case ACPI_IVAR_FLAGS:
914d4b9ff91SNate Lawson 	*(int *)result = ad->ad_flags;
915d4b9ff91SNate Lawson 	break;
91632d18aa5SMike Smith     case ISA_IVAR_VENDORID:
91732d18aa5SMike Smith     case ISA_IVAR_SERIAL:
91832d18aa5SMike Smith     case ISA_IVAR_COMPATID:
91932d18aa5SMike Smith 	*(int *)result = -1;
92032d18aa5SMike Smith 	break;
92132d18aa5SMike Smith     case ISA_IVAR_LOGICALID:
92232d18aa5SMike Smith 	*(int *)result = acpi_isa_get_logicalid(child);
92332d18aa5SMike Smith 	break;
92415e32d5dSMike Smith     default:
92515e32d5dSMike Smith 	return (ENOENT);
92615e32d5dSMike Smith     }
927be2b1797SNate Lawson 
92815e32d5dSMike Smith     return (0);
92915e32d5dSMike Smith }
93015e32d5dSMike Smith 
93115e32d5dSMike Smith static int
93215e32d5dSMike Smith acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
93315e32d5dSMike Smith {
93415e32d5dSMike Smith     struct acpi_device	*ad;
93515e32d5dSMike Smith 
93615e32d5dSMike Smith     if ((ad = device_get_ivars(child)) == NULL) {
9372d0c82e8SJung-uk Kim 	device_printf(child, "device has no ivars\n");
93815e32d5dSMike Smith 	return (ENOENT);
93915e32d5dSMike Smith     }
94015e32d5dSMike Smith 
94115e32d5dSMike Smith     switch(index) {
94215e32d5dSMike Smith     case ACPI_IVAR_HANDLE:
94315e32d5dSMike Smith 	ad->ad_handle = (ACPI_HANDLE)value;
94415e32d5dSMike Smith 	break;
94515e32d5dSMike Smith     case ACPI_IVAR_MAGIC:
94670fa7bc0SNate Lawson 	ad->ad_magic = (uintptr_t)value;
94715e32d5dSMike Smith 	break;
94815e32d5dSMike Smith     case ACPI_IVAR_PRIVATE:
94915e32d5dSMike Smith 	ad->ad_private = (void *)value;
95015e32d5dSMike Smith 	break;
951d4b9ff91SNate Lawson     case ACPI_IVAR_FLAGS:
952d4b9ff91SNate Lawson 	ad->ad_flags = (int)value;
953d4b9ff91SNate Lawson 	break;
95415e32d5dSMike Smith     default:
9552ab060eeSWarner Losh 	panic("bad ivar write request (%d)", index);
95615e32d5dSMike Smith 	return (ENOENT);
95715e32d5dSMike Smith     }
958be2b1797SNate Lawson 
95915e32d5dSMike Smith     return (0);
96015e32d5dSMike Smith }
96115e32d5dSMike Smith 
96215e32d5dSMike Smith /*
96315e32d5dSMike Smith  * Handle child resource allocation/removal
96415e32d5dSMike Smith  */
96591233413SNate Lawson static struct resource_list *
96691233413SNate Lawson acpi_get_rlist(device_t dev, device_t child)
96715e32d5dSMike Smith {
96891233413SNate Lawson     struct acpi_device		*ad;
96915e32d5dSMike Smith 
97091233413SNate Lawson     ad = device_get_ivars(child);
97191233413SNate Lawson     return (&ad->ad_rl);
97215e32d5dSMike Smith }
97315e32d5dSMike Smith 
9740d484d24SJohn Baldwin static int
9750d484d24SJohn Baldwin acpi_match_resource_hint(device_t dev, int type, long value)
9760d484d24SJohn Baldwin {
9770d484d24SJohn Baldwin     struct acpi_device *ad = device_get_ivars(dev);
9780d484d24SJohn Baldwin     struct resource_list *rl = &ad->ad_rl;
9790d484d24SJohn Baldwin     struct resource_list_entry *rle;
9800d484d24SJohn Baldwin 
9810d484d24SJohn Baldwin     STAILQ_FOREACH(rle, rl, link) {
9820d484d24SJohn Baldwin 	if (rle->type != type)
9830d484d24SJohn Baldwin 	    continue;
9840d484d24SJohn Baldwin 	if (rle->start <= value && rle->end >= value)
9850d484d24SJohn Baldwin 	    return (1);
9860d484d24SJohn Baldwin     }
9870d484d24SJohn Baldwin     return (0);
9880d484d24SJohn Baldwin }
9890d484d24SJohn Baldwin 
9900d484d24SJohn Baldwin /*
9910d484d24SJohn Baldwin  * Wire device unit numbers based on resource matches in hints.
9920d484d24SJohn Baldwin  */
9930d484d24SJohn Baldwin static void
9940d484d24SJohn Baldwin acpi_hint_device_unit(device_t acdev, device_t child, const char *name,
9950d484d24SJohn Baldwin     int *unitp)
9960d484d24SJohn Baldwin {
9970d484d24SJohn Baldwin     const char *s;
9980d484d24SJohn Baldwin     long value;
9990d484d24SJohn Baldwin     int line, matches, unit;
10000d484d24SJohn Baldwin 
10010d484d24SJohn Baldwin     /*
10020d484d24SJohn Baldwin      * Iterate over all the hints for the devices with the specified
10030d484d24SJohn Baldwin      * name to see if one's resources are a subset of this device.
10040d484d24SJohn Baldwin      */
10050d484d24SJohn Baldwin     line = 0;
10060d484d24SJohn Baldwin     for (;;) {
10070d484d24SJohn Baldwin 	if (resource_find_dev(&line, name, &unit, "at", NULL) != 0)
10080d484d24SJohn Baldwin 	    break;
10090d484d24SJohn Baldwin 
10100d484d24SJohn Baldwin 	/* Must have an "at" for acpi or isa. */
10110d484d24SJohn Baldwin 	resource_string_value(name, unit, "at", &s);
10120d484d24SJohn Baldwin 	if (!(strcmp(s, "acpi0") == 0 || strcmp(s, "acpi") == 0 ||
10130d484d24SJohn Baldwin 	    strcmp(s, "isa0") == 0 || strcmp(s, "isa") == 0))
10140d484d24SJohn Baldwin 	    continue;
10150d484d24SJohn Baldwin 
10160d484d24SJohn Baldwin 	/*
10170d484d24SJohn Baldwin 	 * Check for matching resources.  We must have at least one,
10180d484d24SJohn Baldwin 	 * and all resources specified have to match.
10190d484d24SJohn Baldwin 	 *
10200d484d24SJohn Baldwin 	 * XXX: We may want to revisit this to be more lenient and wire
10210d484d24SJohn Baldwin 	 * as long as it gets one match.
10220d484d24SJohn Baldwin 	 */
10230d484d24SJohn Baldwin 	matches = 0;
10240d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "port", &value) == 0) {
10250d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value))
10260d484d24SJohn Baldwin 		matches++;
10270d484d24SJohn Baldwin 	    else
10280d484d24SJohn Baldwin 		continue;
10290d484d24SJohn Baldwin 	}
10300d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "maddr", &value) == 0) {
10310d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_MEMORY, value))
10320d484d24SJohn Baldwin 		matches++;
10330d484d24SJohn Baldwin 	    else
10340d484d24SJohn Baldwin 		continue;
10350d484d24SJohn Baldwin 	}
10360d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "irq", &value) == 0) {
10370d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_IRQ, value))
10380d484d24SJohn Baldwin 		matches++;
10390d484d24SJohn Baldwin 	    else
10400d484d24SJohn Baldwin 		continue;
10410d484d24SJohn Baldwin 	}
10420d484d24SJohn Baldwin 	if (resource_long_value(name, unit, "drq", &value) == 0) {
10430d484d24SJohn Baldwin 	    if (acpi_match_resource_hint(child, SYS_RES_DRQ, value))
10440d484d24SJohn Baldwin 		matches++;
10450d484d24SJohn Baldwin 	    else
10460d484d24SJohn Baldwin 		continue;
10470d484d24SJohn Baldwin 	}
10480d484d24SJohn Baldwin 
10490d484d24SJohn Baldwin 	if (matches > 0) {
10500d484d24SJohn Baldwin 	    /* We have a winner! */
10510d484d24SJohn Baldwin 	    *unitp = unit;
10520d484d24SJohn Baldwin 	    break;
10530d484d24SJohn Baldwin 	}
10540d484d24SJohn Baldwin     }
10550d484d24SJohn Baldwin }
10560d484d24SJohn Baldwin 
1057adad4744SNate Lawson /*
1058adad4744SNate Lawson  * Pre-allocate/manage all memory and IO resources.  Since rman can't handle
1059adad4744SNate Lawson  * duplicates, we merge any in the sysresource attach routine.
1060adad4744SNate Lawson  */
1061adad4744SNate Lawson static int
1062adad4744SNate Lawson acpi_sysres_alloc(device_t dev)
1063adad4744SNate Lawson {
1064adad4744SNate Lawson     struct resource *res;
1065adad4744SNate Lawson     struct resource_list *rl;
1066adad4744SNate Lawson     struct resource_list_entry *rle;
1067adad4744SNate Lawson     struct rman *rm;
1068da72d149SNate Lawson     char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1069da72d149SNate Lawson     device_t *children;
1070da72d149SNate Lawson     int child_count, i;
1071da72d149SNate Lawson 
1072da72d149SNate Lawson     /*
1073da72d149SNate Lawson      * Probe/attach any sysresource devices.  This would be unnecessary if we
1074da72d149SNate Lawson      * had multi-pass probe/attach.
1075da72d149SNate Lawson      */
1076da72d149SNate Lawson     if (device_get_children(dev, &children, &child_count) != 0)
1077da72d149SNate Lawson 	return (ENXIO);
1078da72d149SNate Lawson     for (i = 0; i < child_count; i++) {
1079da72d149SNate Lawson 	if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1080da72d149SNate Lawson 	    device_probe_and_attach(children[i]);
1081da72d149SNate Lawson     }
1082da72d149SNate Lawson     free(children, M_TEMP);
1083adad4744SNate Lawson 
1084adad4744SNate Lawson     rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
1085be1bf4d2SPoul-Henning Kamp     STAILQ_FOREACH(rle, rl, link) {
1086adad4744SNate Lawson 	if (rle->res != NULL) {
1087adad4744SNate Lawson 	    device_printf(dev, "duplicate resource for %lx\n", rle->start);
1088adad4744SNate Lawson 	    continue;
1089adad4744SNate Lawson 	}
1090adad4744SNate Lawson 
1091adad4744SNate Lawson 	/* Only memory and IO resources are valid here. */
1092adad4744SNate Lawson 	switch (rle->type) {
1093adad4744SNate Lawson 	case SYS_RES_IOPORT:
1094adad4744SNate Lawson 	    rm = &acpi_rman_io;
1095adad4744SNate Lawson 	    break;
1096adad4744SNate Lawson 	case SYS_RES_MEMORY:
1097adad4744SNate Lawson 	    rm = &acpi_rman_mem;
1098adad4744SNate Lawson 	    break;
1099adad4744SNate Lawson 	default:
1100adad4744SNate Lawson 	    continue;
1101adad4744SNate Lawson 	}
1102adad4744SNate Lawson 
1103adad4744SNate Lawson 	/* Pre-allocate resource and add to our rman pool. */
1104adad4744SNate Lawson 	res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1105adad4744SNate Lawson 	    &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
1106adad4744SNate Lawson 	if (res != NULL) {
1107adad4744SNate Lawson 	    rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1108adad4744SNate Lawson 	    rle->res = res;
1109adad4744SNate Lawson 	} else
1110adad4744SNate Lawson 	    device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1111adad4744SNate Lawson 		rle->start, rle->count, rle->type);
1112adad4744SNate Lawson     }
1113adad4744SNate Lawson     return (0);
1114adad4744SNate Lawson }
1115adad4744SNate Lawson 
111615e32d5dSMike Smith static struct resource *
111715e32d5dSMike Smith acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
111815e32d5dSMike Smith     u_long start, u_long end, u_long count, u_int flags)
111915e32d5dSMike Smith {
112095957f62SJohn Baldwin     ACPI_RESOURCE ares;
112115e32d5dSMike Smith     struct acpi_device *ad = device_get_ivars(child);
112215e32d5dSMike Smith     struct resource_list *rl = &ad->ad_rl;
112391233413SNate Lawson     struct resource_list_entry *rle;
112491233413SNate Lawson     struct resource *res;
112591233413SNate Lawson     struct rman *rm;
112615e32d5dSMike Smith 
112715e2f34fSNate Lawson     res = NULL;
1128397c30a8SJohn Baldwin 
1129397c30a8SJohn Baldwin     /* We only handle memory and IO resources through rman. */
1130397c30a8SJohn Baldwin     switch (type) {
1131397c30a8SJohn Baldwin     case SYS_RES_IOPORT:
1132397c30a8SJohn Baldwin 	rm = &acpi_rman_io;
1133397c30a8SJohn Baldwin 	break;
1134397c30a8SJohn Baldwin     case SYS_RES_MEMORY:
1135397c30a8SJohn Baldwin 	rm = &acpi_rman_mem;
1136397c30a8SJohn Baldwin 	break;
1137397c30a8SJohn Baldwin     default:
1138397c30a8SJohn Baldwin 	rm = NULL;
1139397c30a8SJohn Baldwin     }
1140397c30a8SJohn Baldwin 
114115e2f34fSNate Lawson     ACPI_SERIAL_BEGIN(acpi);
114215e2f34fSNate Lawson 
114391233413SNate Lawson     /*
114491233413SNate Lawson      * If this is an allocation of the "default" range for a given RID, and
114591233413SNate Lawson      * we know what the resources for this device are (i.e., they're on the
114691233413SNate Lawson      * child's resource list), use those start/end values.
114791233413SNate Lawson      */
1148f09aa88cSWarner Losh     if (bus == device_get_parent(child) && start == 0UL && end == ~0UL) {
114991233413SNate Lawson 	rle = resource_list_find(rl, type, *rid);
115091233413SNate Lawson 	if (rle == NULL)
115115e2f34fSNate Lawson 	    goto out;
115291233413SNate Lawson 	start = rle->start;
115391233413SNate Lawson 	end = rle->end;
115491233413SNate Lawson 	count = rle->count;
115591233413SNate Lawson     }
115691233413SNate Lawson 
1157397c30a8SJohn Baldwin     /*
1158397c30a8SJohn Baldwin      * If this is an allocation of a specific range, see if we can satisfy
1159397c30a8SJohn Baldwin      * the request from our system resource regions.  If we can't, pass the
1160397c30a8SJohn Baldwin      * request up to the parent.
1161397c30a8SJohn Baldwin      */
1162147c0ad0SJohn Baldwin     if (start + count - 1 == end && rm != NULL)
1163397c30a8SJohn Baldwin 	res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1164397c30a8SJohn Baldwin 	    child);
1165397c30a8SJohn Baldwin     if (res == NULL) {
116695957f62SJohn Baldwin 	res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
116795957f62SJohn Baldwin 	    start, end, count, flags);
116895957f62SJohn Baldwin     } else {
1169c3f861f4SWarner Losh 	rman_set_rid(res, *rid);
117091233413SNate Lawson 
117191233413SNate Lawson 	/* If requested, activate the resource using the parent's method. */
117295957f62SJohn Baldwin 	if (flags & RF_ACTIVE)
117391233413SNate Lawson 	    if (bus_activate_resource(child, type, *rid, res) != 0) {
117491233413SNate Lawson 		rman_release_resource(res);
117515e2f34fSNate Lawson 		res = NULL;
117615e2f34fSNate Lawson 		goto out;
117791233413SNate Lawson 	    }
117895957f62SJohn Baldwin     }
117991233413SNate Lawson 
118095957f62SJohn Baldwin     if (res != NULL && device_get_parent(child) == bus)
118195957f62SJohn Baldwin 	switch (type) {
118295957f62SJohn Baldwin 	case SYS_RES_IRQ:
118395957f62SJohn Baldwin 	    /*
118495957f62SJohn Baldwin 	     * Since bus_config_intr() takes immediate effect, we cannot
118595957f62SJohn Baldwin 	     * configure the interrupt associated with a device when we
118695957f62SJohn Baldwin 	     * parse the resources but have to defer it until a driver
118795957f62SJohn Baldwin 	     * actually allocates the interrupt via bus_alloc_resource().
118895957f62SJohn Baldwin 	     *
118995957f62SJohn Baldwin 	     * XXX: Should we handle the lookup failing?
119095957f62SJohn Baldwin 	     */
119195957f62SJohn Baldwin 	    if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
119295957f62SJohn Baldwin 		acpi_config_intr(child, &ares);
119395957f62SJohn Baldwin 	    break;
119495957f62SJohn Baldwin 	}
119515e2f34fSNate Lawson 
119615e2f34fSNate Lawson out:
119715e2f34fSNate Lawson     ACPI_SERIAL_END(acpi);
119891233413SNate Lawson     return (res);
119915e32d5dSMike Smith }
120015e32d5dSMike Smith 
120115e32d5dSMike Smith static int
120291233413SNate Lawson acpi_release_resource(device_t bus, device_t child, int type, int rid,
120391233413SNate Lawson     struct resource *r)
120415e32d5dSMike Smith {
1205397c30a8SJohn Baldwin     struct rman *rm;
120691233413SNate Lawson     int ret;
120715e32d5dSMike Smith 
1208397c30a8SJohn Baldwin     /* We only handle memory and IO resources through rman. */
1209397c30a8SJohn Baldwin     switch (type) {
1210397c30a8SJohn Baldwin     case SYS_RES_IOPORT:
1211397c30a8SJohn Baldwin 	rm = &acpi_rman_io;
1212397c30a8SJohn Baldwin 	break;
1213397c30a8SJohn Baldwin     case SYS_RES_MEMORY:
1214397c30a8SJohn Baldwin 	rm = &acpi_rman_mem;
1215397c30a8SJohn Baldwin 	break;
1216397c30a8SJohn Baldwin     default:
1217397c30a8SJohn Baldwin 	rm = NULL;
1218397c30a8SJohn Baldwin     }
1219397c30a8SJohn Baldwin 
122015e2f34fSNate Lawson     ACPI_SERIAL_BEGIN(acpi);
122115e2f34fSNate Lawson 
122291233413SNate Lawson     /*
1223397c30a8SJohn Baldwin      * If this resource belongs to one of our internal managers,
1224397c30a8SJohn Baldwin      * deactivate it and release it to the local pool.  If it doesn't,
1225397c30a8SJohn Baldwin      * pass this request up to the parent.
122691233413SNate Lawson      */
1227397c30a8SJohn Baldwin     if (rm != NULL && rman_is_region_manager(r, rm)) {
122891233413SNate Lawson 	if (rman_get_flags(r) & RF_ACTIVE) {
122991233413SNate Lawson 	    ret = bus_deactivate_resource(child, type, rid, r);
123091233413SNate Lawson 	    if (ret != 0)
123115e2f34fSNate Lawson 		goto out;
123291233413SNate Lawson 	}
123391233413SNate Lawson 	ret = rman_release_resource(r);
123491233413SNate Lawson     } else
123591233413SNate Lawson 	ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
123691233413SNate Lawson 
123715e2f34fSNate Lawson out:
123815e2f34fSNate Lawson     ACPI_SERIAL_END(acpi);
123991233413SNate Lawson     return (ret);
124015e32d5dSMike Smith }
124115e32d5dSMike Smith 
12428b28b622SNate Lawson static void
12438b28b622SNate Lawson acpi_delete_resource(device_t bus, device_t child, int type, int rid)
12448b28b622SNate Lawson {
12458b28b622SNate Lawson     struct resource_list *rl;
12468b28b622SNate Lawson 
12478b28b622SNate Lawson     rl = acpi_get_rlist(bus, child);
12488b28b622SNate Lawson     resource_list_delete(rl, type, rid);
12498b28b622SNate Lawson }
12508b28b622SNate Lawson 
1251dc750869SNate Lawson /* Allocate an IO port or memory resource, given its GAS. */
1252e1c4bf3fSNate Lawson int
1253e1c4bf3fSNate Lawson acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1254907b6777SNate Lawson     struct resource **res, u_int flags)
1255dc750869SNate Lawson {
1256e1c4bf3fSNate Lawson     int error, res_type;
1257dc750869SNate Lawson 
1258e1c4bf3fSNate Lawson     error = ENOMEM;
12598f118e25SNate Lawson     if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1260e1c4bf3fSNate Lawson 	return (EINVAL);
1261dc750869SNate Lawson 
12628f118e25SNate Lawson     /* We only support memory and IO spaces. */
12632be4e471SJung-uk Kim     switch (gas->SpaceId) {
1264dc750869SNate Lawson     case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1265e1c4bf3fSNate Lawson 	res_type = SYS_RES_MEMORY;
1266dc750869SNate Lawson 	break;
1267dc750869SNate Lawson     case ACPI_ADR_SPACE_SYSTEM_IO:
1268e1c4bf3fSNate Lawson 	res_type = SYS_RES_IOPORT;
1269dc750869SNate Lawson 	break;
1270dc750869SNate Lawson     default:
1271e1c4bf3fSNate Lawson 	return (EOPNOTSUPP);
1272dc750869SNate Lawson     }
1273dc750869SNate Lawson 
12742fe912dfSNate Lawson     /*
1275f45fc848SNate Lawson      * If the register width is less than 8, assume the BIOS author means
1276f45fc848SNate Lawson      * it is a bit field and just allocate a byte.
12772fe912dfSNate Lawson      */
12782be4e471SJung-uk Kim     if (gas->BitWidth && gas->BitWidth < 8)
12792be4e471SJung-uk Kim 	gas->BitWidth = 8;
12802fe912dfSNate Lawson 
12818f118e25SNate Lawson     /* Validate the address after we're sure we support the space. */
12822be4e471SJung-uk Kim     if (gas->Address == 0 || gas->BitWidth == 0)
12838f118e25SNate Lawson 	return (EINVAL);
12848f118e25SNate Lawson 
1285e1c4bf3fSNate Lawson     bus_set_resource(dev, res_type, *rid, gas->Address,
12862be4e471SJung-uk Kim 	gas->BitWidth / 8);
1287907b6777SNate Lawson     *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1288e1c4bf3fSNate Lawson     if (*res != NULL) {
1289e1c4bf3fSNate Lawson 	*type = res_type;
1290e1c4bf3fSNate Lawson 	error = 0;
1291ca2c69c8SNate Lawson     } else
1292ca2c69c8SNate Lawson 	bus_delete_resource(dev, res_type, *rid);
1293ca2c69c8SNate Lawson 
1294e1c4bf3fSNate Lawson     return (error);
1295dc750869SNate Lawson }
1296dc750869SNate Lawson 
1297c796e27bSNate Lawson /* Probe _HID and _CID for compatible ISA PNP ids. */
12981e4925e8SNate Lawson static uint32_t
129932d18aa5SMike Smith acpi_isa_get_logicalid(device_t dev)
1300bc0f2195SMike Smith {
13011e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
13021e4925e8SNate Lawson     ACPI_BUFFER		buf;
1303bc0f2195SMike Smith     ACPI_HANDLE		h;
1304bc0f2195SMike Smith     ACPI_STATUS		error;
1305bc0f2195SMike Smith     u_int32_t		pnpid;
130632d18aa5SMike Smith 
1307b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
130832d18aa5SMike Smith 
130932d18aa5SMike Smith     pnpid = 0;
1310bd189fe7SNate Lawson     buf.Pointer = NULL;
1311bd189fe7SNate Lawson     buf.Length = ACPI_ALLOCATE_BUFFER;
1312bd189fe7SNate Lawson 
13136fca9360SNate Lawson     /* Fetch and validate the HID. */
131432d18aa5SMike Smith     if ((h = acpi_get_handle(dev)) == NULL)
1315bd189fe7SNate Lawson 	goto out;
13166fca9360SNate Lawson     error = AcpiGetObjectInfo(h, &buf);
13176fca9360SNate Lawson     if (ACPI_FAILURE(error))
1318bd189fe7SNate Lawson 	goto out;
13191e4925e8SNate Lawson     devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
132032d18aa5SMike Smith 
13211e4925e8SNate Lawson     if ((devinfo->Valid & ACPI_VALID_HID) != 0)
13221e4925e8SNate Lawson 	pnpid = PNP_EISAID(devinfo->HardwareId.Value);
1323be2b1797SNate Lawson 
1324bd189fe7SNate Lawson out:
1325bd189fe7SNate Lawson     if (buf.Pointer != NULL)
13261e4925e8SNate Lawson 	AcpiOsFree(buf.Pointer);
132732d18aa5SMike Smith     return_VALUE (pnpid);
132832d18aa5SMike Smith }
132932d18aa5SMike Smith 
13301e4925e8SNate Lawson static int
13311e4925e8SNate Lawson acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1332b2566207STakanori Watanabe {
13331e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
13341e4925e8SNate Lawson     ACPI_BUFFER		buf;
1335b2566207STakanori Watanabe     ACPI_HANDLE		h;
1336b2566207STakanori Watanabe     ACPI_STATUS		error;
13371e4925e8SNate Lawson     uint32_t		*pnpid;
13381e4925e8SNate Lawson     int			valid, i;
1339b2566207STakanori Watanabe 
1340b2566207STakanori Watanabe     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1341b2566207STakanori Watanabe 
13421e4925e8SNate Lawson     pnpid = cids;
13431e4925e8SNate Lawson     valid = 0;
1344bd189fe7SNate Lawson     buf.Pointer = NULL;
1345bd189fe7SNate Lawson     buf.Length = ACPI_ALLOCATE_BUFFER;
1346bd189fe7SNate Lawson 
13471e4925e8SNate Lawson     /* Fetch and validate the CID */
1348b2566207STakanori Watanabe     if ((h = acpi_get_handle(dev)) == NULL)
1349bd189fe7SNate Lawson 	goto out;
13501e4925e8SNate Lawson     error = AcpiGetObjectInfo(h, &buf);
13511e4925e8SNate Lawson     if (ACPI_FAILURE(error))
1352bd189fe7SNate Lawson 	goto out;
13531e4925e8SNate Lawson     devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
13541e4925e8SNate Lawson     if ((devinfo->Valid & ACPI_VALID_CID) == 0)
1355b2566207STakanori Watanabe 	goto out;
1356b2566207STakanori Watanabe 
13571e4925e8SNate Lawson     if (devinfo->CompatibilityId.Count < count)
13581e4925e8SNate Lawson 	count = devinfo->CompatibilityId.Count;
13591e4925e8SNate Lawson     for (i = 0; i < count; i++) {
13601e4925e8SNate Lawson 	if (strncmp(devinfo->CompatibilityId.Id[i].Value, "PNP", 3) != 0)
13611e4925e8SNate Lawson 	    continue;
13621e4925e8SNate Lawson 	*pnpid++ = PNP_EISAID(devinfo->CompatibilityId.Id[i].Value);
13631e4925e8SNate Lawson 	valid++;
1364b2566207STakanori Watanabe     }
1365b2566207STakanori Watanabe 
13661e4925e8SNate Lawson out:
1367bd189fe7SNate Lawson     if (buf.Pointer != NULL)
13681e4925e8SNate Lawson 	AcpiOsFree(buf.Pointer);
13691e4925e8SNate Lawson     return_VALUE (valid);
13701e4925e8SNate Lawson }
1371b2566207STakanori Watanabe 
1372ce619b2eSNate Lawson static char *
1373ce619b2eSNate Lawson acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1374ce619b2eSNate Lawson {
1375ce619b2eSNate Lawson     ACPI_HANDLE h;
1376ce619b2eSNate Lawson     int i;
1377ce619b2eSNate Lawson 
1378ce619b2eSNate Lawson     h = acpi_get_handle(dev);
1379ce619b2eSNate Lawson     if (ids == NULL || h == NULL || acpi_get_type(dev) != ACPI_TYPE_DEVICE)
1380ce619b2eSNate Lawson 	return (NULL);
1381ce619b2eSNate Lawson 
1382ce619b2eSNate Lawson     /* Try to match one of the array of IDs with a HID or CID. */
1383ce619b2eSNate Lawson     for (i = 0; ids[i] != NULL; i++) {
1384ce619b2eSNate Lawson 	if (acpi_MatchHid(h, ids[i]))
1385ce619b2eSNate Lawson 	    return (ids[i]);
1386ce619b2eSNate Lawson     }
1387ce619b2eSNate Lawson     return (NULL);
1388ce619b2eSNate Lawson }
1389ce619b2eSNate Lawson 
1390ce619b2eSNate Lawson static ACPI_STATUS
1391ce619b2eSNate Lawson acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1392ce619b2eSNate Lawson     ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1393ce619b2eSNate Lawson {
1394ce619b2eSNate Lawson     ACPI_HANDLE h;
1395ce619b2eSNate Lawson 
1396df8d2a32SNate Lawson     if (dev == NULL)
1397df8d2a32SNate Lawson 	h = ACPI_ROOT_OBJECT;
1398df8d2a32SNate Lawson     else if ((h = acpi_get_handle(dev)) == NULL)
1399ce619b2eSNate Lawson 	return (AE_BAD_PARAMETER);
1400ce619b2eSNate Lawson     return (AcpiEvaluateObject(h, pathname, parameters, ret));
1401ce619b2eSNate Lawson }
1402ce619b2eSNate Lawson 
140310ce62b9SNate Lawson static int
140410ce62b9SNate Lawson acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
140510ce62b9SNate Lawson {
140610ce62b9SNate Lawson     struct acpi_softc *sc;
140710ce62b9SNate Lawson     ACPI_HANDLE handle;
140810ce62b9SNate Lawson     ACPI_STATUS status;
140910ce62b9SNate Lawson     char sxd[8];
141010ce62b9SNate Lawson     int error;
141110ce62b9SNate Lawson 
141210ce62b9SNate Lawson     sc = device_get_softc(bus);
141310ce62b9SNate Lawson     handle = acpi_get_handle(dev);
141410ce62b9SNate Lawson 
141510ce62b9SNate Lawson     /*
141610ce62b9SNate Lawson      * XXX If we find these devices, don't try to power them down.
141710ce62b9SNate Lawson      * The serial and IRDA ports on my T23 hang the system when
141810ce62b9SNate Lawson      * set to D3 and it appears that such legacy devices may
141910ce62b9SNate Lawson      * need special handling in their drivers.
142010ce62b9SNate Lawson      */
142110ce62b9SNate Lawson     if (handle == NULL ||
142210ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0500") ||
142310ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0501") ||
142410ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0502") ||
142510ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0510") ||
142610ce62b9SNate Lawson 	acpi_MatchHid(handle, "PNP0511"))
142710ce62b9SNate Lawson 	return (ENXIO);
142810ce62b9SNate Lawson 
142910ce62b9SNate Lawson     /*
143010ce62b9SNate Lawson      * Override next state with the value from _SxD, if present.  If no
143110ce62b9SNate Lawson      * dstate argument was provided, don't fetch the return value.
143210ce62b9SNate Lawson      */
143310ce62b9SNate Lawson     snprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
143410ce62b9SNate Lawson     if (dstate)
143510ce62b9SNate Lawson 	status = acpi_GetInteger(handle, sxd, dstate);
143610ce62b9SNate Lawson     else
143710ce62b9SNate Lawson 	status = AcpiEvaluateObject(handle, sxd, NULL, NULL);
143810ce62b9SNate Lawson 
143910ce62b9SNate Lawson     switch (status) {
144010ce62b9SNate Lawson     case AE_OK:
144110ce62b9SNate Lawson 	error = 0;
144210ce62b9SNate Lawson 	break;
144310ce62b9SNate Lawson     case AE_NOT_FOUND:
144410ce62b9SNate Lawson 	error = ESRCH;
144510ce62b9SNate Lawson 	break;
144610ce62b9SNate Lawson     default:
144710ce62b9SNate Lawson 	error = ENXIO;
144810ce62b9SNate Lawson 	break;
144910ce62b9SNate Lawson     }
145010ce62b9SNate Lawson 
145110ce62b9SNate Lawson     return (error);
145210ce62b9SNate Lawson }
145310ce62b9SNate Lawson 
1454df8d2a32SNate Lawson /* Callback arg for our implementation of walking the namespace. */
1455df8d2a32SNate Lawson struct acpi_device_scan_ctx {
1456df8d2a32SNate Lawson     acpi_scan_cb_t	user_fn;
1457df8d2a32SNate Lawson     void		*arg;
1458df8d2a32SNate Lawson     ACPI_HANDLE		parent;
1459df8d2a32SNate Lawson };
1460df8d2a32SNate Lawson 
1461ce619b2eSNate Lawson static ACPI_STATUS
1462df8d2a32SNate Lawson acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1463df8d2a32SNate Lawson {
1464df8d2a32SNate Lawson     struct acpi_device_scan_ctx *ctx;
1465df8d2a32SNate Lawson     device_t dev, old_dev;
1466df8d2a32SNate Lawson     ACPI_STATUS status;
1467df8d2a32SNate Lawson     ACPI_OBJECT_TYPE type;
1468df8d2a32SNate Lawson 
1469df8d2a32SNate Lawson     /*
1470df8d2a32SNate Lawson      * Skip this device if we think we'll have trouble with it or it is
1471df8d2a32SNate Lawson      * the parent where the scan began.
1472df8d2a32SNate Lawson      */
1473df8d2a32SNate Lawson     ctx = (struct acpi_device_scan_ctx *)arg;
1474df8d2a32SNate Lawson     if (acpi_avoid(h) || h == ctx->parent)
1475df8d2a32SNate Lawson 	return (AE_OK);
1476df8d2a32SNate Lawson 
1477df8d2a32SNate Lawson     /* If this is not a valid device type (e.g., a method), skip it. */
1478df8d2a32SNate Lawson     if (ACPI_FAILURE(AcpiGetType(h, &type)))
1479df8d2a32SNate Lawson 	return (AE_OK);
1480df8d2a32SNate Lawson     if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1481df8d2a32SNate Lawson 	type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1482df8d2a32SNate Lawson 	return (AE_OK);
1483df8d2a32SNate Lawson 
1484df8d2a32SNate Lawson     /*
1485df8d2a32SNate Lawson      * Call the user function with the current device.  If it is unchanged
1486df8d2a32SNate Lawson      * afterwards, return.  Otherwise, we update the handle to the new dev.
1487df8d2a32SNate Lawson      */
1488df8d2a32SNate Lawson     old_dev = acpi_get_device(h);
1489df8d2a32SNate Lawson     dev = old_dev;
1490df8d2a32SNate Lawson     status = ctx->user_fn(h, &dev, level, ctx->arg);
1491df8d2a32SNate Lawson     if (ACPI_FAILURE(status) || old_dev == dev)
1492df8d2a32SNate Lawson 	return (status);
1493df8d2a32SNate Lawson 
1494df8d2a32SNate Lawson     /* Remove the old child and its connection to the handle. */
1495df8d2a32SNate Lawson     if (old_dev != NULL) {
1496df8d2a32SNate Lawson 	device_delete_child(device_get_parent(old_dev), old_dev);
1497df8d2a32SNate Lawson 	AcpiDetachData(h, acpi_fake_objhandler);
1498df8d2a32SNate Lawson     }
1499df8d2a32SNate Lawson 
1500df8d2a32SNate Lawson     /* Recreate the handle association if the user created a device. */
1501df8d2a32SNate Lawson     if (dev != NULL)
1502df8d2a32SNate Lawson 	AcpiAttachData(h, acpi_fake_objhandler, dev);
1503df8d2a32SNate Lawson 
1504df8d2a32SNate Lawson     return (AE_OK);
1505df8d2a32SNate Lawson }
1506df8d2a32SNate Lawson 
1507df8d2a32SNate Lawson static ACPI_STATUS
1508df8d2a32SNate Lawson acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1509df8d2a32SNate Lawson     acpi_scan_cb_t user_fn, void *arg)
1510ce619b2eSNate Lawson {
1511ce619b2eSNate Lawson     ACPI_HANDLE h;
1512df8d2a32SNate Lawson     struct acpi_device_scan_ctx ctx;
1513ce619b2eSNate Lawson 
1514df8d2a32SNate Lawson     if (acpi_disabled("children"))
1515df8d2a32SNate Lawson 	return (AE_OK);
1516df8d2a32SNate Lawson 
1517df8d2a32SNate Lawson     if (dev == NULL)
1518df8d2a32SNate Lawson 	h = ACPI_ROOT_OBJECT;
1519df8d2a32SNate Lawson     else if ((h = acpi_get_handle(dev)) == NULL)
1520ce619b2eSNate Lawson 	return (AE_BAD_PARAMETER);
1521df8d2a32SNate Lawson     ctx.user_fn = user_fn;
1522df8d2a32SNate Lawson     ctx.arg = arg;
1523df8d2a32SNate Lawson     ctx.parent = h;
1524df8d2a32SNate Lawson     return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
1525df8d2a32SNate Lawson 	acpi_device_scan_cb, &ctx, NULL));
1526ce619b2eSNate Lawson }
1527ce619b2eSNate Lawson 
152810ce62b9SNate Lawson /*
152910ce62b9SNate Lawson  * Even though ACPI devices are not PCI, we use the PCI approach for setting
153010ce62b9SNate Lawson  * device power states since it's close enough to ACPI.
153110ce62b9SNate Lawson  */
153210ce62b9SNate Lawson static int
153310ce62b9SNate Lawson acpi_set_powerstate_method(device_t bus, device_t child, int state)
153410ce62b9SNate Lawson {
153510ce62b9SNate Lawson     ACPI_HANDLE h;
153610ce62b9SNate Lawson     ACPI_STATUS status;
153710ce62b9SNate Lawson     int error;
153810ce62b9SNate Lawson 
153910ce62b9SNate Lawson     error = 0;
154010ce62b9SNate Lawson     h = acpi_get_handle(child);
1541a0e73a12SJung-uk Kim     if (state < ACPI_STATE_D0 || state > ACPI_D_STATES_MAX)
154210ce62b9SNate Lawson 	return (EINVAL);
154310ce62b9SNate Lawson     if (h == NULL)
154410ce62b9SNate Lawson 	return (0);
154510ce62b9SNate Lawson 
154610ce62b9SNate Lawson     /* Ignore errors if the power methods aren't present. */
154710ce62b9SNate Lawson     status = acpi_pwr_switch_consumer(h, state);
154810ce62b9SNate Lawson     if (ACPI_FAILURE(status) && status != AE_NOT_FOUND
154910ce62b9SNate Lawson 	&& status != AE_BAD_PARAMETER)
155010ce62b9SNate Lawson 	device_printf(bus, "failed to set ACPI power state D%d on %s: %s\n",
155110ce62b9SNate Lawson 	    state, acpi_name(h), AcpiFormatException(status));
155210ce62b9SNate Lawson 
155310ce62b9SNate Lawson     return (error);
155410ce62b9SNate Lawson }
155510ce62b9SNate Lawson 
155632d18aa5SMike Smith static int
155732d18aa5SMike Smith acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
155832d18aa5SMike Smith {
15591e4925e8SNate Lawson     int			result, cid_count, i;
15601e4925e8SNate Lawson     uint32_t		lid, cids[8];
1561bc0f2195SMike Smith 
1562b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1563bc0f2195SMike Smith 
1564bc0f2195SMike Smith     /*
1565bc0f2195SMike Smith      * ISA-style drivers attached to ACPI may persist and
1566bc0f2195SMike Smith      * probe manually if we return ENOENT.  We never want
1567bc0f2195SMike Smith      * that to happen, so don't ever return it.
1568bc0f2195SMike Smith      */
1569bc0f2195SMike Smith     result = ENXIO;
1570bc0f2195SMike Smith 
1571be2b1797SNate Lawson     /* Scan the supplied IDs for a match */
1572b2566207STakanori Watanabe     lid = acpi_isa_get_logicalid(child);
15731e4925e8SNate Lawson     cid_count = acpi_isa_get_compatid(child, cids, 8);
1574bc0f2195SMike Smith     while (ids && ids->ip_id) {
15751e4925e8SNate Lawson 	if (lid == ids->ip_id) {
1576bc0f2195SMike Smith 	    result = 0;
1577bc0f2195SMike Smith 	    goto out;
1578bc0f2195SMike Smith 	}
15791e4925e8SNate Lawson 	for (i = 0; i < cid_count; i++) {
15801e4925e8SNate Lawson 	    if (cids[i] == ids->ip_id) {
15811e4925e8SNate Lawson 		result = 0;
15821e4925e8SNate Lawson 		goto out;
15831e4925e8SNate Lawson 	    }
15841e4925e8SNate Lawson 	}
1585bc0f2195SMike Smith 	ids++;
1586bc0f2195SMike Smith     }
1587be2b1797SNate Lawson 
1588bc0f2195SMike Smith  out:
15899e0dd54fSNate Lawson     if (result == 0 && ids->ip_desc)
15909e0dd54fSNate Lawson 	device_set_desc(child, ids->ip_desc);
15919e0dd54fSNate Lawson 
1592bc0f2195SMike Smith     return_VALUE (result);
1593bc0f2195SMike Smith }
1594bc0f2195SMike Smith 
1595d320e05cSJohn Baldwin #if defined(__i386__) || defined(__amd64__)
1596d320e05cSJohn Baldwin /*
1597d320e05cSJohn Baldwin  * Look for a MCFG table.  If it is present, use the settings for
1598d320e05cSJohn Baldwin  * domain (segment) 0 to setup PCI config space access via the memory
1599d320e05cSJohn Baldwin  * map.
1600d320e05cSJohn Baldwin  */
1601d320e05cSJohn Baldwin static void
1602d320e05cSJohn Baldwin acpi_enable_pcie(void)
1603d320e05cSJohn Baldwin {
1604d320e05cSJohn Baldwin 	ACPI_TABLE_HEADER *hdr;
1605d320e05cSJohn Baldwin 	ACPI_MCFG_ALLOCATION *alloc, *end;
1606d320e05cSJohn Baldwin 	ACPI_STATUS status;
1607d320e05cSJohn Baldwin 
1608d320e05cSJohn Baldwin 	status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1609d320e05cSJohn Baldwin 	if (ACPI_FAILURE(status))
1610d320e05cSJohn Baldwin 		return;
1611d320e05cSJohn Baldwin 
1612d320e05cSJohn Baldwin 	end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1613d320e05cSJohn Baldwin 	alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1614d320e05cSJohn Baldwin 	while (alloc < end) {
1615d320e05cSJohn Baldwin 		if (alloc->PciSegment == 0) {
1616d320e05cSJohn Baldwin 			pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1617d320e05cSJohn Baldwin 			    alloc->EndBusNumber);
1618d320e05cSJohn Baldwin 			return;
1619d320e05cSJohn Baldwin 		}
1620d320e05cSJohn Baldwin 		alloc++;
1621d320e05cSJohn Baldwin 	}
1622d320e05cSJohn Baldwin }
1623d320e05cSJohn Baldwin #endif
1624d320e05cSJohn Baldwin 
1625bc0f2195SMike Smith /*
162633332dc2SNate Lawson  * Scan all of the ACPI namespace and attach child devices.
162715e32d5dSMike Smith  *
162833332dc2SNate Lawson  * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
162933332dc2SNate Lawson  * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
163033332dc2SNate Lawson  * However, in violation of the spec, some systems place their PCI link
163133332dc2SNate Lawson  * devices in \, so we have to walk the whole namespace.  We check the
163233332dc2SNate Lawson  * type of namespace nodes, so this should be ok.
163315e32d5dSMike Smith  */
163415e32d5dSMike Smith static void
163515e32d5dSMike Smith acpi_probe_children(device_t bus)
163615e32d5dSMike Smith {
163715e32d5dSMike Smith 
1638b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
16390ae55423SMike Smith 
164015e32d5dSMike Smith     /*
164115e32d5dSMike Smith      * Scan the namespace and insert placeholders for all the devices that
1642edc13633SNate Lawson      * we find.  We also probe/attach any early devices.
164315e32d5dSMike Smith      *
164415e32d5dSMike Smith      * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1645be2b1797SNate Lawson      * we want to create nodes for all devices, not just those that are
1646be2b1797SNate Lawson      * currently present. (This assumes that we don't want to create/remove
1647be2b1797SNate Lawson      * devices as they appear, which might be smarter.)
164815e32d5dSMike Smith      */
16494c1cdee6SMike Smith     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
165033332dc2SNate Lawson     AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child,
1651be2b1797SNate Lawson 	bus, NULL);
165215e32d5dSMike Smith 
1653adad4744SNate Lawson     /* Pre-allocate resources for our rman from any sysresource devices. */
1654adad4744SNate Lawson     acpi_sysres_alloc(bus);
1655adad4744SNate Lawson 
1656edc13633SNate Lawson     /* Create any static children by calling device identify methods. */
1657edc13633SNate Lawson     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1658edc13633SNate Lawson     bus_generic_probe(bus);
1659edc13633SNate Lawson 
1660edc13633SNate Lawson     /* Probe/attach all children, created staticly and from the namespace. */
16614c1cdee6SMike Smith     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
166215e32d5dSMike Smith     bus_generic_attach(bus);
166315e32d5dSMike Smith 
166415e32d5dSMike Smith     /*
166515e32d5dSMike Smith      * Some of these children may have attached others as part of their attach
166615e32d5dSMike Smith      * process (eg. the root PCI bus driver), so rescan.
166715e32d5dSMike Smith      */
16684c1cdee6SMike Smith     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
166915e32d5dSMike Smith     bus_generic_attach(bus);
16700ae55423SMike Smith 
167188a79fc0SNate Lawson     /* Attach wake sysctls. */
16725c9ea25eSNate Lawson     acpi_wake_sysctl_walk(bus);
167388a79fc0SNate Lawson 
1674bc0f2195SMike Smith     ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
16750ae55423SMike Smith     return_VOID;
167615e32d5dSMike Smith }
167715e32d5dSMike Smith 
1678b82ca9a9SNate Lawson /*
1679d227204dSJohn Baldwin  * Determine the probe order for a given device.
1680b82ca9a9SNate Lawson  */
1681d227204dSJohn Baldwin static void
1682b82ca9a9SNate Lawson acpi_probe_order(ACPI_HANDLE handle, int *order)
168391233413SNate Lawson {
1684463e0f91SJohn Baldwin     ACPI_OBJECT_TYPE type;
168591233413SNate Lawson 
1686b82ca9a9SNate Lawson     /*
1687b82ca9a9SNate Lawson      * 1. I/O port and memory system resource holders
1688b82ca9a9SNate Lawson      * 2. Embedded controllers (to handle early accesses)
1689b460c6f8SJohn Baldwin      * 3. PCI Link Devices
1690b6618687SJohn Baldwin      * 100000. CPUs
1691b82ca9a9SNate Lawson      */
1692463e0f91SJohn Baldwin     AcpiGetType(handle, &type);
1693da72d149SNate Lawson     if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02"))
169491233413SNate Lawson 	*order = 1;
1695da72d149SNate Lawson     else if (acpi_MatchHid(handle, "PNP0C09"))
169691233413SNate Lawson 	*order = 2;
1697da72d149SNate Lawson     else if (acpi_MatchHid(handle, "PNP0C0F"))
1698b460c6f8SJohn Baldwin 	*order = 3;
1699d227204dSJohn Baldwin     else if (type == ACPI_TYPE_PROCESSOR)
1700b6618687SJohn Baldwin 	*order = 100000;
170191233413SNate Lawson }
170291233413SNate Lawson 
170315e32d5dSMike Smith /*
170415e32d5dSMike Smith  * Evaluate a child device and determine whether we might attach a device to
170515e32d5dSMike Smith  * it.
170615e32d5dSMike Smith  */
170715e32d5dSMike Smith static ACPI_STATUS
170815e32d5dSMike Smith acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
170915e32d5dSMike Smith {
171015e32d5dSMike Smith     ACPI_OBJECT_TYPE type;
1711858a52f4SMitsuru IWASAKI     ACPI_HANDLE h;
171233332dc2SNate Lawson     device_t bus, child;
1713da72d149SNate Lawson     int order;
171433332dc2SNate Lawson     char *handle_str, **search;
171533332dc2SNate Lawson     static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI_", "\\_SB_", NULL};
171615e32d5dSMike Smith 
1717b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
17180ae55423SMike Smith 
1719be2b1797SNate Lawson     /* Skip this device if we think we'll have trouble with it. */
17200ae55423SMike Smith     if (acpi_avoid(handle))
17210ae55423SMike Smith 	return_ACPI_STATUS (AE_OK);
17220ae55423SMike Smith 
172391233413SNate Lawson     bus = (device_t)context;
1724b53f2771SMike Smith     if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
172515e32d5dSMike Smith 	switch (type) {
172615e32d5dSMike Smith 	case ACPI_TYPE_DEVICE:
172715e32d5dSMike Smith 	case ACPI_TYPE_PROCESSOR:
172815e32d5dSMike Smith 	case ACPI_TYPE_THERMAL:
172915e32d5dSMike Smith 	case ACPI_TYPE_POWER:
17300ae55423SMike Smith 	    if (acpi_disabled("children"))
17310ae55423SMike Smith 		break;
1732be2b1797SNate Lawson 
173315e32d5dSMike Smith 	    /*
173433332dc2SNate Lawson 	     * Since we scan from \, be sure to skip system scope objects.
173533332dc2SNate Lawson 	     * At least \_SB and \_TZ are detected as devices (ACPI-CA bug?)
173633332dc2SNate Lawson 	     */
173733332dc2SNate Lawson 	    handle_str = acpi_name(handle);
173833332dc2SNate Lawson 	    for (search = scopes; *search != NULL; search++) {
173933332dc2SNate Lawson 		if (strcmp(handle_str, *search) == 0)
174033332dc2SNate Lawson 		    break;
174133332dc2SNate Lawson 	    }
174233332dc2SNate Lawson 	    if (*search != NULL)
174333332dc2SNate Lawson 		break;
174433332dc2SNate Lawson 
174533332dc2SNate Lawson 	    /*
1746463e0f91SJohn Baldwin 	     * Create a placeholder device for this node.  Sort the
1747463e0f91SJohn Baldwin 	     * placeholder so that the probe/attach passes will run
1748463e0f91SJohn Baldwin 	     * breadth-first.  Orders less than ACPI_DEV_BASE_ORDER
1749463e0f91SJohn Baldwin 	     * are reserved for special objects (i.e., system
1750b6618687SJohn Baldwin 	     * resources).  CPU devices have a very high order to
1751b6618687SJohn Baldwin 	     * ensure they are probed after other devices.
175215e32d5dSMike Smith 	     */
175333332dc2SNate Lawson 	    ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1754d227204dSJohn Baldwin 	    order = level * 10 + 100;
1755da72d149SNate Lawson 	    acpi_probe_order(handle, &order);
175691233413SNate Lawson 	    child = BUS_ADD_CHILD(bus, order, NULL, -1);
1757bc0f2195SMike Smith 	    if (child == NULL)
1758bc0f2195SMike Smith 		break;
175959a890e6SNate Lawson 
176059a890e6SNate Lawson 	    /* Associate the handle with the device_t and vice versa. */
176115e32d5dSMike Smith 	    acpi_set_handle(child, handle);
176259a890e6SNate Lawson 	    AcpiAttachData(handle, acpi_fake_objhandler, child);
1763bc0f2195SMike Smith 
1764bc0f2195SMike Smith 	    /*
1765b519f9d6SMike Smith 	     * Check that the device is present.  If it's not present,
1766b519f9d6SMike Smith 	     * leave it disabled (so that we have a device_t attached to
1767b519f9d6SMike Smith 	     * the handle, but we don't probe it).
1768893f750aSNate Lawson 	     *
1769893f750aSNate Lawson 	     * XXX PCI link devices sometimes report "present" but not
1770893f750aSNate Lawson 	     * "functional" (i.e. if disabled).  Go ahead and probe them
1771893f750aSNate Lawson 	     * anyway since we may enable them later.
1772b519f9d6SMike Smith 	     */
1773858a52f4SMitsuru IWASAKI 	    if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1774858a52f4SMitsuru IWASAKI 		/* Never disable PCI link devices. */
1775858a52f4SMitsuru IWASAKI 		if (acpi_MatchHid(handle, "PNP0C0F"))
1776858a52f4SMitsuru IWASAKI 		    break;
1777858a52f4SMitsuru IWASAKI 		/*
1778858a52f4SMitsuru IWASAKI 		 * Docking stations should remain enabled since the system
1779858a52f4SMitsuru IWASAKI 		 * may be undocked at boot.
1780858a52f4SMitsuru IWASAKI 		 */
1781858a52f4SMitsuru IWASAKI 		if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
1782858a52f4SMitsuru IWASAKI 		    break;
1783858a52f4SMitsuru IWASAKI 
1784b519f9d6SMike Smith 		device_disable(child);
1785b519f9d6SMike Smith 		break;
1786b519f9d6SMike Smith 	    }
1787b519f9d6SMike Smith 
1788b519f9d6SMike Smith 	    /*
1789bc0f2195SMike Smith 	     * Get the device's resource settings and attach them.
1790bc0f2195SMike Smith 	     * Note that if the device has _PRS but no _CRS, we need
1791bc0f2195SMike Smith 	     * to decide when it's appropriate to try to configure the
1792bc0f2195SMike Smith 	     * device.  Ignore the return value here; it's OK for the
1793bc0f2195SMike Smith 	     * device not to have any resources.
1794bc0f2195SMike Smith 	     */
179572ad60adSNate Lawson 	    acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
17960ae55423SMike Smith 	    break;
179715e32d5dSMike Smith 	}
179815e32d5dSMike Smith     }
1799be2b1797SNate Lawson 
18000ae55423SMike Smith     return_ACPI_STATUS (AE_OK);
180115e32d5dSMike Smith }
180215e32d5dSMike Smith 
180359a890e6SNate Lawson /*
180459a890e6SNate Lawson  * AcpiAttachData() requires an object handler but never uses it.  This is a
180559a890e6SNate Lawson  * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
180659a890e6SNate Lawson  */
180759a890e6SNate Lawson void
180859a890e6SNate Lawson acpi_fake_objhandler(ACPI_HANDLE h, UINT32 fn, void *data)
180959a890e6SNate Lawson {
181059a890e6SNate Lawson }
181159a890e6SNate Lawson 
181215e32d5dSMike Smith static void
181315e32d5dSMike Smith acpi_shutdown_final(void *arg, int howto)
181415e32d5dSMike Smith {
18152d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
1816d33f4987STakanori Watanabe     ACPI_STATUS status;
1817eeb3a05fSNate Lawson 
1818eeb3a05fSNate Lawson     /*
181980f0e4c2SNate Lawson      * XXX Shutdown code should only run on the BSP (cpuid 0).
182080f0e4c2SNate Lawson      * Some chipsets do not power off the system correctly if called from
182180f0e4c2SNate Lawson      * an AP.
1822eeb3a05fSNate Lawson      */
1823eeb3a05fSNate Lawson     if ((howto & RB_POWEROFF) != 0) {
1824904bf0c2SNate Lawson 	status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1825904bf0c2SNate Lawson 	if (ACPI_FAILURE(status)) {
18262d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
1827904bf0c2SNate Lawson 		AcpiFormatException(status));
1828904bf0c2SNate Lawson 	    return;
1829904bf0c2SNate Lawson 	}
18302d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev, "Powering system off\n");
183155398047SNate Lawson 	ACPI_DISABLE_IRQS();
1832865b8d0bSNate Lawson 	status = AcpiEnterSleepState(ACPI_STATE_S5);
18332d0c82e8SJung-uk Kim 	if (ACPI_FAILURE(status))
18342d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "power-off failed - %s\n",
18352d0c82e8SJung-uk Kim 		AcpiFormatException(status));
18362d0c82e8SJung-uk Kim 	else {
183715e32d5dSMike Smith 	    DELAY(1000000);
18382d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "power-off failed - timeout\n");
183915e32d5dSMike Smith 	}
18402be4e471SJung-uk Kim     } else if ((howto & RB_HALT) == 0 &&
18412be4e471SJung-uk Kim 	(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) &&
1842d1b16e18SNate Lawson 	sc->acpi_handle_reboot) {
1843d85e6785SNate Lawson 	/* Reboot using the reset register. */
1844129d3046SJung-uk Kim 	status = AcpiWrite(
18452be4e471SJung-uk Kim 	    AcpiGbl_FADT.ResetValue, &AcpiGbl_FADT.ResetRegister);
18462d0c82e8SJung-uk Kim 	if (ACPI_FAILURE(status))
18472d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "reset failed - %s\n",
18482d0c82e8SJung-uk Kim 		AcpiFormatException(status));
18492d0c82e8SJung-uk Kim 	else {
185087a500cdSNate Lawson 	    DELAY(1000000);
18512d0c82e8SJung-uk Kim 	    device_printf(sc->acpi_dev, "reset failed - timeout\n");
185287a500cdSNate Lawson 	}
1853d85e6785SNate Lawson     } else if (sc->acpi_do_disable && panicstr == NULL) {
1854d85e6785SNate Lawson 	/*
1855d85e6785SNate Lawson 	 * Only disable ACPI if the user requested.  On some systems, writing
1856d85e6785SNate Lawson 	 * the disable value to SMI_CMD hangs the system.
1857d85e6785SNate Lawson 	 */
18582d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev, "Shutting down\n");
185980f0e4c2SNate Lawson 	AcpiTerminate();
186080f0e4c2SNate Lawson     }
186115e32d5dSMike Smith }
186215e32d5dSMike Smith 
186313d4f7baSMitsuru IWASAKI static void
186413d4f7baSMitsuru IWASAKI acpi_enable_fixed_events(struct acpi_softc *sc)
186513d4f7baSMitsuru IWASAKI {
186613d4f7baSMitsuru IWASAKI     static int	first_time = 1;
186713d4f7baSMitsuru IWASAKI 
186813d4f7baSMitsuru IWASAKI     /* Enable and clear fixed events and install handlers. */
18692be4e471SJung-uk Kim     if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
187059ddeb18SNate Lawson 	AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
187113d4f7baSMitsuru IWASAKI 	AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
187233febf93SNate Lawson 				     acpi_event_power_button_sleep, sc);
1873be2b1797SNate Lawson 	if (first_time)
18746c0e8467SNate Lawson 	    device_printf(sc->acpi_dev, "Power Button (fixed)\n");
187513d4f7baSMitsuru IWASAKI     }
18762be4e471SJung-uk Kim     if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
187759ddeb18SNate Lawson 	AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
187813d4f7baSMitsuru IWASAKI 	AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
187933febf93SNate Lawson 				     acpi_event_sleep_button_sleep, sc);
1880be2b1797SNate Lawson 	if (first_time)
18816c0e8467SNate Lawson 	    device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
188213d4f7baSMitsuru IWASAKI     }
188313d4f7baSMitsuru IWASAKI 
188413d4f7baSMitsuru IWASAKI     first_time = 0;
188513d4f7baSMitsuru IWASAKI }
188613d4f7baSMitsuru IWASAKI 
188715e32d5dSMike Smith /*
1888c5ba0be4SMike Smith  * Returns true if the device is actually present and should
1889c5ba0be4SMike Smith  * be attached to.  This requires the present, enabled, UI-visible
1890c5ba0be4SMike Smith  * and diagnostics-passed bits to be set.
1891c5ba0be4SMike Smith  */
1892c5ba0be4SMike Smith BOOLEAN
1893c5ba0be4SMike Smith acpi_DeviceIsPresent(device_t dev)
1894c5ba0be4SMike Smith {
18951e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
1896c5ba0be4SMike Smith     ACPI_HANDLE		h;
18971e4925e8SNate Lawson     ACPI_BUFFER		buf;
1898c5ba0be4SMike Smith     ACPI_STATUS		error;
18991e4925e8SNate Lawson     int			ret;
1900c5ba0be4SMike Smith 
19011e4925e8SNate Lawson     ret = FALSE;
1902c5ba0be4SMike Smith     if ((h = acpi_get_handle(dev)) == NULL)
1903c5ba0be4SMike Smith 	return (FALSE);
19041e4925e8SNate Lawson     buf.Pointer = NULL;
19051e4925e8SNate Lawson     buf.Length = ACPI_ALLOCATE_BUFFER;
19066fca9360SNate Lawson     error = AcpiGetObjectInfo(h, &buf);
19076fca9360SNate Lawson     if (ACPI_FAILURE(error))
1908c5ba0be4SMike Smith 	return (FALSE);
19091e4925e8SNate Lawson     devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1910be2b1797SNate Lawson 
1911be2b1797SNate Lawson     /* If no _STA method, must be present */
19121e4925e8SNate Lawson     if ((devinfo->Valid & ACPI_VALID_STA) == 0)
19131e4925e8SNate Lawson 	ret = TRUE;
1914be2b1797SNate Lawson 
1915be2b1797SNate Lawson     /* Return true for 'present' and 'functioning' */
191617dbe0f7SNate Lawson     if (ACPI_DEVICE_PRESENT(devinfo->CurrentStatus))
19171e4925e8SNate Lawson 	ret = TRUE;
1918be2b1797SNate Lawson 
19191e4925e8SNate Lawson     AcpiOsFree(buf.Pointer);
19201e4925e8SNate Lawson     return (ret);
1921c5ba0be4SMike Smith }
1922c5ba0be4SMike Smith 
1923c5ba0be4SMike Smith /*
1924b53f2771SMike Smith  * Returns true if the battery is actually present and inserted.
1925b53f2771SMike Smith  */
1926b53f2771SMike Smith BOOLEAN
1927b53f2771SMike Smith acpi_BatteryIsPresent(device_t dev)
1928b53f2771SMike Smith {
19291e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
1930b53f2771SMike Smith     ACPI_HANDLE		h;
19311e4925e8SNate Lawson     ACPI_BUFFER		buf;
1932b53f2771SMike Smith     ACPI_STATUS		error;
19331e4925e8SNate Lawson     int			ret;
1934b53f2771SMike Smith 
19351e4925e8SNate Lawson     ret = FALSE;
1936b53f2771SMike Smith     if ((h = acpi_get_handle(dev)) == NULL)
1937b53f2771SMike Smith 	return (FALSE);
19381e4925e8SNate Lawson     buf.Pointer = NULL;
19391e4925e8SNate Lawson     buf.Length = ACPI_ALLOCATE_BUFFER;
19406fca9360SNate Lawson     error = AcpiGetObjectInfo(h, &buf);
19416fca9360SNate Lawson     if (ACPI_FAILURE(error))
1942b53f2771SMike Smith 	return (FALSE);
19431e4925e8SNate Lawson     devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1944be2b1797SNate Lawson 
1945be2b1797SNate Lawson     /* If no _STA method, must be present */
19461e4925e8SNate Lawson     if ((devinfo->Valid & ACPI_VALID_STA) == 0)
19471e4925e8SNate Lawson 	ret = TRUE;
1948be2b1797SNate Lawson 
194917dbe0f7SNate Lawson     /* Return true for 'present', 'battery present', and 'functioning' */
195017dbe0f7SNate Lawson     if (ACPI_BATTERY_PRESENT(devinfo->CurrentStatus))
19511e4925e8SNate Lawson 	ret = TRUE;
1952be2b1797SNate Lawson 
19531e4925e8SNate Lawson     AcpiOsFree(buf.Pointer);
19541e4925e8SNate Lawson     return (ret);
1955b53f2771SMike Smith }
1956b53f2771SMike Smith 
1957b53f2771SMike Smith /*
195891233413SNate Lawson  * Match a HID string against a handle
195915e32d5dSMike Smith  */
1960ce619b2eSNate Lawson static BOOLEAN
1961ce619b2eSNate Lawson acpi_MatchHid(ACPI_HANDLE h, const char *hid)
196215e32d5dSMike Smith {
19631e4925e8SNate Lawson     ACPI_DEVICE_INFO	*devinfo;
19641e4925e8SNate Lawson     ACPI_BUFFER		buf;
196515e32d5dSMike Smith     ACPI_STATUS		error;
19661e4925e8SNate Lawson     int			ret, i;
196715e32d5dSMike Smith 
19681e4925e8SNate Lawson     ret = FALSE;
196991233413SNate Lawson     if (hid == NULL || h == NULL)
197091233413SNate Lawson 	return (ret);
19711e4925e8SNate Lawson     buf.Pointer = NULL;
19721e4925e8SNate Lawson     buf.Length = ACPI_ALLOCATE_BUFFER;
19736fca9360SNate Lawson     error = AcpiGetObjectInfo(h, &buf);
19746fca9360SNate Lawson     if (ACPI_FAILURE(error))
197591233413SNate Lawson 	return (ret);
19761e4925e8SNate Lawson     devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1977be2b1797SNate Lawson 
1978c59c9a8eSJohn Baldwin     if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
1979c59c9a8eSJohn Baldwin 	strcmp(hid, devinfo->HardwareId.Value) == 0)
19801e4925e8SNate Lawson 	    ret = TRUE;
1981c59c9a8eSJohn Baldwin     else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
19821e4925e8SNate Lawson 	for (i = 0; i < devinfo->CompatibilityId.Count; i++) {
19831e4925e8SNate Lawson 	    if (strcmp(hid, devinfo->CompatibilityId.Id[i].Value) == 0) {
19841e4925e8SNate Lawson 		ret = TRUE;
19851e4925e8SNate Lawson 		break;
19861e4925e8SNate Lawson 	    }
19871e4925e8SNate Lawson 	}
19881e4925e8SNate Lawson     }
1989be2b1797SNate Lawson 
19901e4925e8SNate Lawson     AcpiOsFree(buf.Pointer);
19911e4925e8SNate Lawson     return (ret);
199215e32d5dSMike Smith }
199315e32d5dSMike Smith 
199415e32d5dSMike Smith /*
1995c5ba0be4SMike Smith  * Return the handle of a named object within our scope, ie. that of (parent)
1996c5ba0be4SMike Smith  * or one if its parents.
1997c5ba0be4SMike Smith  */
1998c5ba0be4SMike Smith ACPI_STATUS
1999c5ba0be4SMike Smith acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
2000c5ba0be4SMike Smith {
2001c5ba0be4SMike Smith     ACPI_HANDLE		r;
2002c5ba0be4SMike Smith     ACPI_STATUS		status;
2003c5ba0be4SMike Smith 
2004be2b1797SNate Lawson     /* Walk back up the tree to the root */
2005c5ba0be4SMike Smith     for (;;) {
2006be2b1797SNate Lawson 	status = AcpiGetHandle(parent, path, &r);
2007be2b1797SNate Lawson 	if (ACPI_SUCCESS(status)) {
2008c5ba0be4SMike Smith 	    *result = r;
2009c5ba0be4SMike Smith 	    return (AE_OK);
2010c5ba0be4SMike Smith 	}
2011bee4aa4aSNate Lawson 	/* XXX Return error here? */
2012c5ba0be4SMike Smith 	if (status != AE_NOT_FOUND)
2013c5ba0be4SMike Smith 	    return (AE_OK);
2014b53f2771SMike Smith 	if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
2015c5ba0be4SMike Smith 	    return (AE_NOT_FOUND);
2016c5ba0be4SMike Smith 	parent = r;
2017c5ba0be4SMike Smith     }
2018c5ba0be4SMike Smith }
2019c5ba0be4SMike Smith 
2020eea17c34SNate Lawson /* Find the difference between two PM tick counts. */
2021eea17c34SNate Lawson uint32_t
2022eea17c34SNate Lawson acpi_TimerDelta(uint32_t end, uint32_t start)
2023eea17c34SNate Lawson {
2024eea17c34SNate Lawson     uint32_t delta;
2025eea17c34SNate Lawson 
2026eea17c34SNate Lawson     if (end >= start)
2027eea17c34SNate Lawson 	delta = end - start;
20282be4e471SJung-uk Kim     else if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
2029eea17c34SNate Lawson 	delta = ((0xFFFFFFFF - start) + end + 1);
20302be4e471SJung-uk Kim     else
20312be4e471SJung-uk Kim 	delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
2032eea17c34SNate Lawson     return (delta);
2033eea17c34SNate Lawson }
2034eea17c34SNate Lawson 
2035c5ba0be4SMike Smith /*
2036c5ba0be4SMike Smith  * Allocate a buffer with a preset data size.
2037c5ba0be4SMike Smith  */
2038c5ba0be4SMike Smith ACPI_BUFFER *
2039c5ba0be4SMike Smith acpi_AllocBuffer(int size)
2040c5ba0be4SMike Smith {
2041c5ba0be4SMike Smith     ACPI_BUFFER	*buf;
2042c5ba0be4SMike Smith 
2043c5ba0be4SMike Smith     if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
2044c5ba0be4SMike Smith 	return (NULL);
2045c5ba0be4SMike Smith     buf->Length = size;
2046c5ba0be4SMike Smith     buf->Pointer = (void *)(buf + 1);
2047c5ba0be4SMike Smith     return (buf);
2048c5ba0be4SMike Smith }
2049c5ba0be4SMike Smith 
2050c310653eSNate Lawson ACPI_STATUS
2051cc58e4eeSNate Lawson acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
2052c310653eSNate Lawson {
2053c310653eSNate Lawson     ACPI_OBJECT arg1;
2054c310653eSNate Lawson     ACPI_OBJECT_LIST args;
2055c310653eSNate Lawson 
2056c310653eSNate Lawson     arg1.Type = ACPI_TYPE_INTEGER;
2057c310653eSNate Lawson     arg1.Integer.Value = number;
2058c310653eSNate Lawson     args.Count = 1;
2059c310653eSNate Lawson     args.Pointer = &arg1;
2060c310653eSNate Lawson 
2061c310653eSNate Lawson     return (AcpiEvaluateObject(handle, path, &args, NULL));
2062c310653eSNate Lawson }
2063c310653eSNate Lawson 
2064c5ba0be4SMike Smith /*
2065c5ba0be4SMike Smith  * Evaluate a path that should return an integer.
2066c5ba0be4SMike Smith  */
2067c5ba0be4SMike Smith ACPI_STATUS
2068cc58e4eeSNate Lawson acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
2069c5ba0be4SMike Smith {
2070be2b1797SNate Lawson     ACPI_STATUS	status;
2071c5ba0be4SMike Smith     ACPI_BUFFER	buf;
2072c573e654SMitsuru IWASAKI     ACPI_OBJECT	param;
2073c5ba0be4SMike Smith 
2074c5ba0be4SMike Smith     if (handle == NULL)
2075c5ba0be4SMike Smith 	handle = ACPI_ROOT_OBJECT;
20760c7da7acSJohn Baldwin 
20770c7da7acSJohn Baldwin     /*
20780c7da7acSJohn Baldwin      * Assume that what we've been pointed at is an Integer object, or
20790c7da7acSJohn Baldwin      * a method that will return an Integer.
20800c7da7acSJohn Baldwin      */
2081c5ba0be4SMike Smith     buf.Pointer = &param;
2082c5ba0be4SMike Smith     buf.Length = sizeof(param);
2083be2b1797SNate Lawson     status = AcpiEvaluateObject(handle, path, NULL, &buf);
2084be2b1797SNate Lawson     if (ACPI_SUCCESS(status)) {
2085be2b1797SNate Lawson 	if (param.Type == ACPI_TYPE_INTEGER)
2086c5ba0be4SMike Smith 	    *number = param.Integer.Value;
2087be2b1797SNate Lawson 	else
2088be2b1797SNate Lawson 	    status = AE_TYPE;
2089c5ba0be4SMike Smith     }
20900c7da7acSJohn Baldwin 
20910c7da7acSJohn Baldwin     /*
20920c7da7acSJohn Baldwin      * In some applications, a method that's expected to return an Integer
20930c7da7acSJohn Baldwin      * may instead return a Buffer (probably to simplify some internal
20940c7da7acSJohn Baldwin      * arithmetic).  We'll try to fetch whatever it is, and if it's a Buffer,
20950c7da7acSJohn Baldwin      * convert it into an Integer as best we can.
20960c7da7acSJohn Baldwin      *
20970c7da7acSJohn Baldwin      * This is a hack.
20980c7da7acSJohn Baldwin      */
2099be2b1797SNate Lawson     if (status == AE_BUFFER_OVERFLOW) {
2100b53f2771SMike Smith 	if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
2101be2b1797SNate Lawson 	    status = AE_NO_MEMORY;
21020c7da7acSJohn Baldwin 	} else {
2103be2b1797SNate Lawson 	    status = AcpiEvaluateObject(handle, path, NULL, &buf);
2104be2b1797SNate Lawson 	    if (ACPI_SUCCESS(status))
2105be2b1797SNate Lawson 		status = acpi_ConvertBufferToInteger(&buf, number);
21060c7da7acSJohn Baldwin 	    AcpiOsFree(buf.Pointer);
21070c7da7acSJohn Baldwin 	}
2108f97739daSNate Lawson     }
2109be2b1797SNate Lawson     return (status);
2110c5ba0be4SMike Smith }
2111c5ba0be4SMike Smith 
2112c573e654SMitsuru IWASAKI ACPI_STATUS
2113cc58e4eeSNate Lawson acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2114c573e654SMitsuru IWASAKI {
2115c573e654SMitsuru IWASAKI     ACPI_OBJECT	*p;
2116dba55fa2SNate Lawson     UINT8	*val;
2117c573e654SMitsuru IWASAKI     int		i;
2118c573e654SMitsuru IWASAKI 
2119c573e654SMitsuru IWASAKI     p = (ACPI_OBJECT *)bufp->Pointer;
2120c573e654SMitsuru IWASAKI     if (p->Type == ACPI_TYPE_INTEGER) {
2121c573e654SMitsuru IWASAKI 	*number = p->Integer.Value;
2122c573e654SMitsuru IWASAKI 	return (AE_OK);
2123c573e654SMitsuru IWASAKI     }
2124c573e654SMitsuru IWASAKI     if (p->Type != ACPI_TYPE_BUFFER)
2125c573e654SMitsuru IWASAKI 	return (AE_TYPE);
2126c573e654SMitsuru IWASAKI     if (p->Buffer.Length > sizeof(int))
2127c573e654SMitsuru IWASAKI 	return (AE_BAD_DATA);
2128be2b1797SNate Lawson 
2129c573e654SMitsuru IWASAKI     *number = 0;
2130dba55fa2SNate Lawson     val = p->Buffer.Pointer;
2131c573e654SMitsuru IWASAKI     for (i = 0; i < p->Buffer.Length; i++)
2132dba55fa2SNate Lawson 	*number += val[i] << (i * 8);
2133c573e654SMitsuru IWASAKI     return (AE_OK);
2134c573e654SMitsuru IWASAKI }
2135c573e654SMitsuru IWASAKI 
2136c5ba0be4SMike Smith /*
2137c5ba0be4SMike Smith  * Iterate over the elements of an a package object, calling the supplied
2138c5ba0be4SMike Smith  * function for each element.
2139c5ba0be4SMike Smith  *
2140c5ba0be4SMike Smith  * XXX possible enhancement might be to abort traversal on error.
2141c5ba0be4SMike Smith  */
2142c5ba0be4SMike Smith ACPI_STATUS
2143be2b1797SNate Lawson acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2144be2b1797SNate Lawson 	void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2145c5ba0be4SMike Smith {
2146c5ba0be4SMike Smith     ACPI_OBJECT	*comp;
2147c5ba0be4SMike Smith     int		i;
2148c5ba0be4SMike Smith 
2149be2b1797SNate Lawson     if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2150c5ba0be4SMike Smith 	return (AE_BAD_PARAMETER);
2151c5ba0be4SMike Smith 
2152be2b1797SNate Lawson     /* Iterate over components */
2153be2b1797SNate Lawson     i = 0;
2154be2b1797SNate Lawson     comp = pkg->Package.Elements;
2155be2b1797SNate Lawson     for (; i < pkg->Package.Count; i++, comp++)
2156c5ba0be4SMike Smith 	func(comp, arg);
2157c5ba0be4SMike Smith 
2158c5ba0be4SMike Smith     return (AE_OK);
2159c5ba0be4SMike Smith }
2160c5ba0be4SMike Smith 
21616f69255bSMike Smith /*
21626f69255bSMike Smith  * Find the (index)th resource object in a set.
21636f69255bSMike Smith  */
21646f69255bSMike Smith ACPI_STATUS
21656d63101aSMike Smith acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
21666f69255bSMike Smith {
21676d63101aSMike Smith     ACPI_RESOURCE	*rp;
21686f69255bSMike Smith     int			i;
21696f69255bSMike Smith 
21706d63101aSMike Smith     rp = (ACPI_RESOURCE *)buf->Pointer;
21716f69255bSMike Smith     i = index;
21726d63101aSMike Smith     while (i-- > 0) {
2173be2b1797SNate Lawson 	/* Range check */
21746d63101aSMike Smith 	if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
21756f69255bSMike Smith 	    return (AE_BAD_PARAMETER);
2176be2b1797SNate Lawson 
2177be2b1797SNate Lawson 	/* Check for terminator */
2178e8d472a7SJung-uk Kim 	if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
21796d63101aSMike Smith 	    return (AE_NOT_FOUND);
2180abcbc5bcSNate Lawson 	rp = ACPI_NEXT_RESOURCE(rp);
21816f69255bSMike Smith     }
21826f69255bSMike Smith     if (resp != NULL)
21836d63101aSMike Smith 	*resp = rp;
2184be2b1797SNate Lawson 
21856d63101aSMike Smith     return (AE_OK);
21866d63101aSMike Smith }
21876d63101aSMike Smith 
21886d63101aSMike Smith /*
21896d63101aSMike Smith  * Append an ACPI_RESOURCE to an ACPI_BUFFER.
21906d63101aSMike Smith  *
21916d63101aSMike Smith  * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
21926d63101aSMike Smith  * provided to contain it.  If the ACPI_BUFFER is empty, allocate a sensible
21936d63101aSMike Smith  * backing block.  If the ACPI_RESOURCE is NULL, return an empty set of
21946d63101aSMike Smith  * resources.
21956d63101aSMike Smith  */
21966d63101aSMike Smith #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE	512
21976d63101aSMike Smith 
21986d63101aSMike Smith ACPI_STATUS
21996d63101aSMike Smith acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
22006d63101aSMike Smith {
22016d63101aSMike Smith     ACPI_RESOURCE	*rp;
22026d63101aSMike Smith     void		*newp;
22036d63101aSMike Smith 
2204be2b1797SNate Lawson     /* Initialise the buffer if necessary. */
22056d63101aSMike Smith     if (buf->Pointer == NULL) {
22066d63101aSMike Smith 	buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
22076d63101aSMike Smith 	if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
22086d63101aSMike Smith 	    return (AE_NO_MEMORY);
22096d63101aSMike Smith 	rp = (ACPI_RESOURCE *)buf->Pointer;
2210e8d472a7SJung-uk Kim 	rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
22116d63101aSMike Smith 	rp->Length = 0;
22126d63101aSMike Smith     }
22136d63101aSMike Smith     if (res == NULL)
22146d63101aSMike Smith 	return (AE_OK);
22156d63101aSMike Smith 
22166d63101aSMike Smith     /*
22176d63101aSMike Smith      * Scan the current buffer looking for the terminator.
22186d63101aSMike Smith      * This will either find the terminator or hit the end
22196d63101aSMike Smith      * of the buffer and return an error.
22206d63101aSMike Smith      */
22216d63101aSMike Smith     rp = (ACPI_RESOURCE *)buf->Pointer;
22226d63101aSMike Smith     for (;;) {
2223be2b1797SNate Lawson 	/* Range check, don't go outside the buffer */
22246d63101aSMike Smith 	if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
22256d63101aSMike Smith 	    return (AE_BAD_PARAMETER);
2226e8d472a7SJung-uk Kim 	if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
22276d63101aSMike Smith 	    break;
2228abcbc5bcSNate Lawson 	rp = ACPI_NEXT_RESOURCE(rp);
22296d63101aSMike Smith     }
22306d63101aSMike Smith 
22316d63101aSMike Smith     /*
22326d63101aSMike Smith      * Check the size of the buffer and expand if required.
22336d63101aSMike Smith      *
22346d63101aSMike Smith      * Required size is:
22356d63101aSMike Smith      *	size of existing resources before terminator +
22366d63101aSMike Smith      *	size of new resource and header +
22376d63101aSMike Smith      * 	size of terminator.
22386d63101aSMike Smith      *
22396d63101aSMike Smith      * Note that this loop should really only run once, unless
22406d63101aSMike Smith      * for some reason we are stuffing a *really* huge resource.
22416d63101aSMike Smith      */
22426d63101aSMike Smith     while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
2243e8d472a7SJung-uk Kim 	    res->Length + ACPI_RS_SIZE_NO_DATA +
2244e8d472a7SJung-uk Kim 	    ACPI_RS_SIZE_MIN) >= buf->Length) {
22456d63101aSMike Smith 	if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
22466d63101aSMike Smith 	    return (AE_NO_MEMORY);
22476d63101aSMike Smith 	bcopy(buf->Pointer, newp, buf->Length);
2248a692219dSMike Smith 	rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2249a692219dSMike Smith 			       ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
22506d63101aSMike Smith 	AcpiOsFree(buf->Pointer);
22516d63101aSMike Smith 	buf->Pointer = newp;
22526d63101aSMike Smith 	buf->Length += buf->Length;
22536d63101aSMike Smith     }
22546d63101aSMike Smith 
2255be2b1797SNate Lawson     /* Insert the new resource. */
2256e8d472a7SJung-uk Kim     bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
22576d63101aSMike Smith 
2258be2b1797SNate Lawson     /* And add the terminator. */
2259abcbc5bcSNate Lawson     rp = ACPI_NEXT_RESOURCE(rp);
2260e8d472a7SJung-uk Kim     rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
22616d63101aSMike Smith     rp->Length = 0;
22626d63101aSMike Smith 
22636f69255bSMike Smith     return (AE_OK);
22646f69255bSMike Smith }
2265c5ba0be4SMike Smith 
2266da14ac9fSJohn Baldwin /*
2267da14ac9fSJohn Baldwin  * Set interrupt model.
2268da14ac9fSJohn Baldwin  */
2269da14ac9fSJohn Baldwin ACPI_STATUS
2270da14ac9fSJohn Baldwin acpi_SetIntrModel(int model)
2271da14ac9fSJohn Baldwin {
2272da14ac9fSJohn Baldwin 
2273c310653eSNate Lawson     return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2274da14ac9fSJohn Baldwin }
2275da14ac9fSJohn Baldwin 
227600a30448SNate Lawson /*
227700a30448SNate Lawson  * DEPRECATED.  This interface has serious deficiencies and will be
227800a30448SNate Lawson  * removed.
227900a30448SNate Lawson  *
228000a30448SNate Lawson  * Immediately enter the sleep state.  In the old model, acpiconf(8) ran
228100a30448SNate Lawson  * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
228200a30448SNate Lawson  */
228300a30448SNate Lawson ACPI_STATUS
228400a30448SNate Lawson acpi_SetSleepState(struct acpi_softc *sc, int state)
228500a30448SNate Lawson {
228600a30448SNate Lawson     static int once;
228700a30448SNate Lawson 
228800a30448SNate Lawson     if (!once) {
22892d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
229000a30448SNate Lawson "warning: acpi_SetSleepState() deprecated, need to update your software\n");
229100a30448SNate Lawson 	once = 1;
229200a30448SNate Lawson     }
229300a30448SNate Lawson     return (acpi_EnterSleepState(sc, state));
229400a30448SNate Lawson }
229500a30448SNate Lawson 
2296c66d2b38SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
229700a30448SNate Lawson static void
229800a30448SNate Lawson acpi_sleep_force(void *arg)
229900a30448SNate Lawson {
23002d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
230100a30448SNate Lawson 
23022d0c82e8SJung-uk Kim     device_printf(sc->acpi_dev,
23032d0c82e8SJung-uk Kim 	"suspend request timed out, forcing sleep now\n");
230400a30448SNate Lawson     if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
23052d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev, "force sleep state S%d failed\n",
23062d0c82e8SJung-uk Kim 	    sc->acpi_next_sstate);
230700a30448SNate Lawson }
2308c66d2b38SJung-uk Kim #endif
230900a30448SNate Lawson 
231000a30448SNate Lawson /*
231100a30448SNate Lawson  * Request that the system enter the given suspend state.  All /dev/apm
231200a30448SNate Lawson  * devices and devd(8) will be notified.  Userland then has a chance to
231300a30448SNate Lawson  * save state and acknowledge the request.  The system sleeps once all
231400a30448SNate Lawson  * acks are in.
231500a30448SNate Lawson  */
231600a30448SNate Lawson int
231700a30448SNate Lawson acpi_ReqSleepState(struct acpi_softc *sc, int state)
231800a30448SNate Lawson {
2319c66d2b38SJung-uk Kim #if defined(__i386__)
232000a30448SNate Lawson     struct apm_clone_data *clone;
2321c66d2b38SJung-uk Kim #endif
232200a30448SNate Lawson 
2323a0e73a12SJung-uk Kim     if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
232400a30448SNate Lawson 	return (EINVAL);
2325a0e73a12SJung-uk Kim     if (!acpi_sleep_states[state])
2326a0e73a12SJung-uk Kim 	return (EOPNOTSUPP);
232700a30448SNate Lawson 
232800a30448SNate Lawson     /* S5 (soft-off) should be entered directly with no waiting. */
232900a30448SNate Lawson     if (state == ACPI_STATE_S5) {
233000a30448SNate Lawson 	if (ACPI_SUCCESS(acpi_EnterSleepState(sc, state)))
233100a30448SNate Lawson 	    return (0);
233200a30448SNate Lawson 	else
233300a30448SNate Lawson 	    return (ENXIO);
233400a30448SNate Lawson     }
233500a30448SNate Lawson 
2336c66d2b38SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
233700a30448SNate Lawson     /* If a suspend request is already in progress, just return. */
233800a30448SNate Lawson     ACPI_LOCK(acpi);
233900a30448SNate Lawson     if (sc->acpi_next_sstate != 0) {
234000a30448SNate Lawson     	ACPI_UNLOCK(acpi);
234100a30448SNate Lawson 	return (0);
234200a30448SNate Lawson     }
234300a30448SNate Lawson 
234400a30448SNate Lawson     /* Record the pending state and notify all apm devices. */
234500a30448SNate Lawson     sc->acpi_next_sstate = state;
2346c66d2b38SJung-uk Kim #if defined(__i386__)
234700a30448SNate Lawson     STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
234800a30448SNate Lawson 	clone->notify_status = APM_EV_NONE;
234900a30448SNate Lawson 	if ((clone->flags & ACPI_EVF_DEVD) == 0) {
235000a30448SNate Lawson 	    selwakeuppri(&clone->sel_read, PZERO);
235100a30448SNate Lawson 	    KNOTE_UNLOCKED(&clone->sel_read.si_note, 0);
235200a30448SNate Lawson 	}
235300a30448SNate Lawson     }
2354c66d2b38SJung-uk Kim #endif
235500a30448SNate Lawson 
23560c26519eSMitsuru IWASAKI     /* If devd(8) is not running, immediately enter the sleep state. */
2357d42f0ad8SJung-uk Kim     if (!devctl_process_running()) {
23580c26519eSMitsuru IWASAKI 	ACPI_UNLOCK(acpi);
23597572a9c7SMitsuru IWASAKI 	if (ACPI_SUCCESS(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) {
23607572a9c7SMitsuru IWASAKI 	    return (0);
23617572a9c7SMitsuru IWASAKI 	} else {
23627572a9c7SMitsuru IWASAKI 	    return (ENXIO);
23637572a9c7SMitsuru IWASAKI 	}
23640c26519eSMitsuru IWASAKI     }
23650c26519eSMitsuru IWASAKI 
236600a30448SNate Lawson     /*
236700a30448SNate Lawson      * Set a timeout to fire if userland doesn't ack the suspend request
236800a30448SNate Lawson      * in time.  This way we still eventually go to sleep if we were
236900a30448SNate Lawson      * overheating or running low on battery, even if userland is hung.
237000a30448SNate Lawson      * We cancel this timeout once all userland acks are in or the
237100a30448SNate Lawson      * suspend request is aborted.
237200a30448SNate Lawson      */
237300a30448SNate Lawson     callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
237400a30448SNate Lawson     ACPI_UNLOCK(acpi);
2375d42f0ad8SJung-uk Kim 
2376d42f0ad8SJung-uk Kim     /* Now notify devd(8) also. */
2377d42f0ad8SJung-uk Kim     acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2378d42f0ad8SJung-uk Kim 
237900a30448SNate Lawson     return (0);
2380c66d2b38SJung-uk Kim #else
2381c66d2b38SJung-uk Kim     /* This platform does not support acpi suspend/resume. */
2382c66d2b38SJung-uk Kim     return (EOPNOTSUPP);
2383c66d2b38SJung-uk Kim #endif
238400a30448SNate Lawson }
238500a30448SNate Lawson 
238600a30448SNate Lawson /*
238700a30448SNate Lawson  * Acknowledge (or reject) a pending sleep state.  The caller has
238800a30448SNate Lawson  * prepared for suspend and is now ready for it to proceed.  If the
238900a30448SNate Lawson  * error argument is non-zero, it indicates suspend should be cancelled
239000a30448SNate Lawson  * and gives an errno value describing why.  Once all votes are in,
239100a30448SNate Lawson  * we suspend the system.
239200a30448SNate Lawson  */
239300a30448SNate Lawson int
239400a30448SNate Lawson acpi_AckSleepState(struct apm_clone_data *clone, int error)
239500a30448SNate Lawson {
2396c66d2b38SJung-uk Kim #if defined(__amd64__) || defined(__i386__)
239700a30448SNate Lawson     struct acpi_softc *sc;
239800a30448SNate Lawson     int ret, sleeping;
239900a30448SNate Lawson 
240000a30448SNate Lawson     /* If no pending sleep state, return an error. */
240100a30448SNate Lawson     ACPI_LOCK(acpi);
240200a30448SNate Lawson     sc = clone->acpi_sc;
240300a30448SNate Lawson     if (sc->acpi_next_sstate == 0) {
240400a30448SNate Lawson     	ACPI_UNLOCK(acpi);
240500a30448SNate Lawson 	return (ENXIO);
240600a30448SNate Lawson     }
240700a30448SNate Lawson 
240800a30448SNate Lawson     /* Caller wants to abort suspend process. */
240900a30448SNate Lawson     if (error) {
241000a30448SNate Lawson 	sc->acpi_next_sstate = 0;
241100a30448SNate Lawson 	callout_stop(&sc->susp_force_to);
24122d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
24132d0c82e8SJung-uk Kim 	    "listener on %s cancelled the pending suspend\n",
241400a30448SNate Lawson 	    devtoname(clone->cdev));
241500a30448SNate Lawson     	ACPI_UNLOCK(acpi);
241600a30448SNate Lawson 	return (0);
241700a30448SNate Lawson     }
241800a30448SNate Lawson 
241900a30448SNate Lawson     /*
242000a30448SNate Lawson      * Mark this device as acking the suspend request.  Then, walk through
242100a30448SNate Lawson      * all devices, seeing if they agree yet.  We only count devices that
242200a30448SNate Lawson      * are writable since read-only devices couldn't ack the request.
242300a30448SNate Lawson      */
242400a30448SNate Lawson     sleeping = TRUE;
2425c66d2b38SJung-uk Kim #if defined(__i386__)
2426c66d2b38SJung-uk Kim     clone->notify_status = APM_EV_ACKED;
242700a30448SNate Lawson     STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
242800a30448SNate Lawson 	if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
242900a30448SNate Lawson 	    clone->notify_status != APM_EV_ACKED) {
243000a30448SNate Lawson 	    sleeping = FALSE;
243100a30448SNate Lawson 	    break;
243200a30448SNate Lawson 	}
243300a30448SNate Lawson     }
2434c66d2b38SJung-uk Kim #endif
243500a30448SNate Lawson 
243600a30448SNate Lawson     /* If all devices have voted "yes", we will suspend now. */
243700a30448SNate Lawson     if (sleeping)
243800a30448SNate Lawson 	callout_stop(&sc->susp_force_to);
243900a30448SNate Lawson     ACPI_UNLOCK(acpi);
244000a30448SNate Lawson     ret = 0;
244100a30448SNate Lawson     if (sleeping) {
244200a30448SNate Lawson 	if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
244300a30448SNate Lawson 		ret = ENODEV;
244400a30448SNate Lawson     }
244500a30448SNate Lawson     return (ret);
2446c66d2b38SJung-uk Kim #else
2447c66d2b38SJung-uk Kim     /* This platform does not support acpi suspend/resume. */
2448c66d2b38SJung-uk Kim     return (EOPNOTSUPP);
2449c66d2b38SJung-uk Kim #endif
245000a30448SNate Lawson }
245100a30448SNate Lawson 
2452ece50487SMitsuru IWASAKI static void
2453ece50487SMitsuru IWASAKI acpi_sleep_enable(void *arg)
2454ece50487SMitsuru IWASAKI {
2455d42f0ad8SJung-uk Kim     struct acpi_softc	*sc = (struct acpi_softc *)arg;
2456bee4aa4aSNate Lawson 
2457a0e73a12SJung-uk Kim     /* Reschedule if the system is not fully up and running. */
2458a0e73a12SJung-uk Kim     if (!AcpiGbl_SystemAwakeAndRunning) {
2459a0e73a12SJung-uk Kim 	timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME);
2460a0e73a12SJung-uk Kim 	return;
2461a0e73a12SJung-uk Kim     }
2462a0e73a12SJung-uk Kim 
2463d42f0ad8SJung-uk Kim     ACPI_LOCK(acpi);
2464a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = FALSE;
2465d42f0ad8SJung-uk Kim     ACPI_UNLOCK(acpi);
2466d42f0ad8SJung-uk Kim }
2467d42f0ad8SJung-uk Kim 
2468d42f0ad8SJung-uk Kim static ACPI_STATUS
2469d42f0ad8SJung-uk Kim acpi_sleep_disable(struct acpi_softc *sc)
2470d42f0ad8SJung-uk Kim {
2471d42f0ad8SJung-uk Kim     ACPI_STATUS		status;
2472d42f0ad8SJung-uk Kim 
2473a0e73a12SJung-uk Kim     /* Fail if the system is not fully up and running. */
2474a0e73a12SJung-uk Kim     if (!AcpiGbl_SystemAwakeAndRunning)
2475a0e73a12SJung-uk Kim 	return (AE_ERROR);
2476a0e73a12SJung-uk Kim 
2477d42f0ad8SJung-uk Kim     ACPI_LOCK(acpi);
2478d42f0ad8SJung-uk Kim     status = sc->acpi_sleep_disabled ? AE_ERROR : AE_OK;
2479a0e73a12SJung-uk Kim     sc->acpi_sleep_disabled = TRUE;
2480d42f0ad8SJung-uk Kim     ACPI_UNLOCK(acpi);
2481d42f0ad8SJung-uk Kim 
2482d42f0ad8SJung-uk Kim     return (status);
2483ece50487SMitsuru IWASAKI }
2484c30382dfSMitsuru IWASAKI 
248515e2f34fSNate Lawson enum acpi_sleep_state {
248615e2f34fSNate Lawson     ACPI_SS_NONE,
248715e2f34fSNate Lawson     ACPI_SS_GPE_SET,
248815e2f34fSNate Lawson     ACPI_SS_DEV_SUSPEND,
248915e2f34fSNate Lawson     ACPI_SS_SLP_PREP,
249015e2f34fSNate Lawson     ACPI_SS_SLEPT,
249115e2f34fSNate Lawson };
249215e2f34fSNate Lawson 
249315e32d5dSMike Smith /*
249400a30448SNate Lawson  * Enter the desired system sleep state.
249515e32d5dSMike Smith  *
2496be2b1797SNate Lawson  * Currently we support S1-S5 but S4 is only S4BIOS
249715e32d5dSMike Smith  */
249800a30448SNate Lawson static ACPI_STATUS
249900a30448SNate Lawson acpi_EnterSleepState(struct acpi_softc *sc, int state)
250015e32d5dSMike Smith {
250115e2f34fSNate Lawson     ACPI_STATUS	status;
250215e2f34fSNate Lawson     enum acpi_sleep_state slp_state;
250315e32d5dSMike Smith 
2504b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
25050ae55423SMike Smith 
2506a0e73a12SJung-uk Kim     if (state < ACPI_STATE_S1 || state > ACPI_S_STATES_MAX)
250733c70d41SAndriy Gapon 	return_ACPI_STATUS (AE_BAD_PARAMETER);
2508a0e73a12SJung-uk Kim     if (!acpi_sleep_states[state]) {
2509a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev, "Sleep state S%d not supported by BIOS\n",
2510a0e73a12SJung-uk Kim 	    state);
2511a0e73a12SJung-uk Kim 	return (AE_SUPPORT);
2512a0e73a12SJung-uk Kim     }
2513a0e73a12SJung-uk Kim 
2514a0e73a12SJung-uk Kim     /* Re-entry once we're suspending is not allowed. */
2515a0e73a12SJung-uk Kim     status = acpi_sleep_disable(sc);
2516a0e73a12SJung-uk Kim     if (ACPI_FAILURE(status)) {
2517a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev,
2518a0e73a12SJung-uk Kim 	    "suspend request ignored (not ready yet)\n");
2519a0e73a12SJung-uk Kim 	return (status);
2520a0e73a12SJung-uk Kim     }
252133c70d41SAndriy Gapon 
252233c70d41SAndriy Gapon     if (state == ACPI_STATE_S5) {
252333c70d41SAndriy Gapon 	/*
252433c70d41SAndriy Gapon 	 * Shut down cleanly and power off.  This will call us back through the
252533c70d41SAndriy Gapon 	 * shutdown handlers.
252633c70d41SAndriy Gapon 	 */
252733c70d41SAndriy Gapon 	shutdown_nice(RB_POWEROFF);
252833c70d41SAndriy Gapon 	return_ACPI_STATUS (AE_OK);
252933c70d41SAndriy Gapon     }
253033c70d41SAndriy Gapon 
2531c66d2b38SJung-uk Kim #ifdef SMP
2532c66d2b38SJung-uk Kim     thread_lock(curthread);
2533c66d2b38SJung-uk Kim     sched_bind(curthread, 0);
2534c66d2b38SJung-uk Kim     thread_unlock(curthread);
2535c66d2b38SJung-uk Kim #endif
2536c66d2b38SJung-uk Kim 
25375d3d03f1SNate Lawson     /*
25385d3d03f1SNate Lawson      * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
25395d3d03f1SNate Lawson      * drivers need this.
25405d3d03f1SNate Lawson      */
25415d3d03f1SNate Lawson     mtx_lock(&Giant);
2542c66d2b38SJung-uk Kim 
254315e2f34fSNate Lawson     slp_state = ACPI_SS_NONE;
254456d8cb57SMitsuru IWASAKI 
2545a1fccb47SMitsuru IWASAKI     sc->acpi_sstate = state;
2546a1fccb47SMitsuru IWASAKI 
2547d4b9ff91SNate Lawson     /* Enable any GPEs as appropriate and requested by the user. */
2548d4b9ff91SNate Lawson     acpi_wake_prep_walk(state);
254915e2f34fSNate Lawson     slp_state = ACPI_SS_GPE_SET;
2550e8b4d56eSNate Lawson 
255115e32d5dSMike Smith     /*
2552c7f88fc3SNate Lawson      * Inform all devices that we are going to sleep.  If at least one
2553c7f88fc3SNate Lawson      * device fails, DEVICE_SUSPEND() automatically resumes the tree.
255415e32d5dSMike Smith      *
2555c7f88fc3SNate Lawson      * XXX Note that a better two-pass approach with a 'veto' pass
2556c7f88fc3SNate Lawson      * followed by a "real thing" pass would be better, but the current
2557c7f88fc3SNate Lawson      * bus interface does not provide for this.
255815e32d5dSMike Smith      */
255915e2f34fSNate Lawson     if (DEVICE_SUSPEND(root_bus) != 0) {
256015e2f34fSNate Lawson 	device_printf(sc->acpi_dev, "device_suspend failed\n");
256133c70d41SAndriy Gapon 	goto backout;
256215e2f34fSNate Lawson     }
256315e2f34fSNate Lawson     slp_state = ACPI_SS_DEV_SUSPEND;
2564b9c780d6SMitsuru IWASAKI 
256593bfd059SNate Lawson     /* If testing device suspend only, back out of everything here. */
256693bfd059SNate Lawson     if (acpi_susp_bounce)
256733c70d41SAndriy Gapon 	goto backout;
256893bfd059SNate Lawson 
2569be2b1797SNate Lawson     status = AcpiEnterSleepStatePrep(state);
2570be2b1797SNate Lawson     if (ACPI_FAILURE(status)) {
2571b9c780d6SMitsuru IWASAKI 	device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2572b9c780d6SMitsuru IWASAKI 		      AcpiFormatException(status));
257333c70d41SAndriy Gapon 	goto backout;
2574b9c780d6SMitsuru IWASAKI     }
257515e2f34fSNate Lawson     slp_state = ACPI_SS_SLP_PREP;
2576b9c780d6SMitsuru IWASAKI 
2577be2b1797SNate Lawson     if (sc->acpi_sleep_delay > 0)
2578ff01efb5SMitsuru IWASAKI 	DELAY(sc->acpi_sleep_delay * 1000000);
2579ff01efb5SMitsuru IWASAKI 
25806161544cSTakanori Watanabe     if (state != ACPI_STATE_S1) {
25816161544cSTakanori Watanabe 	acpi_sleep_machdep(sc, state);
25826161544cSTakanori Watanabe 
25836161544cSTakanori Watanabe 	/* Re-enable ACPI hardware on wakeup from sleep state 4. */
2584be2b1797SNate Lawson 	if (state == ACPI_STATE_S4)
2585964679ceSMitsuru IWASAKI 	    AcpiEnable();
25866161544cSTakanori Watanabe     } else {
2587c7f88fc3SNate Lawson 	ACPI_DISABLE_IRQS();
2588adad4744SNate Lawson 	status = AcpiEnterSleepState(state);
2589be2b1797SNate Lawson 	if (ACPI_FAILURE(status)) {
2590be2b1797SNate Lawson 	    device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2591be2b1797SNate Lawson 			  AcpiFormatException(status));
259233c70d41SAndriy Gapon 	    goto backout;
259315e32d5dSMike Smith 	}
25946161544cSTakanori Watanabe     }
259515e2f34fSNate Lawson     slp_state = ACPI_SS_SLEPT;
2596ece50487SMitsuru IWASAKI 
259715e2f34fSNate Lawson     /*
259815e2f34fSNate Lawson      * Back out state according to how far along we got in the suspend
259915e2f34fSNate Lawson      * process.  This handles both the error and success cases.
260015e2f34fSNate Lawson      */
260133c70d41SAndriy Gapon backout:
260200a30448SNate Lawson     sc->acpi_next_sstate = 0;
260315e2f34fSNate Lawson     if (slp_state >= ACPI_SS_GPE_SET) {
260415e2f34fSNate Lawson 	acpi_wake_prep_walk(state);
260515e2f34fSNate Lawson 	sc->acpi_sstate = ACPI_STATE_S0;
260615e2f34fSNate Lawson     }
260715e2f34fSNate Lawson     if (slp_state >= ACPI_SS_SLP_PREP)
260815e2f34fSNate Lawson 	AcpiLeaveSleepState(state);
2609071339e2SNate Lawson     if (slp_state >= ACPI_SS_DEV_SUSPEND)
2610071339e2SNate Lawson 	DEVICE_RESUME(root_bus);
261115e2f34fSNate Lawson     if (slp_state >= ACPI_SS_SLEPT)
261215e2f34fSNate Lawson 	acpi_enable_fixed_events(sc);
261315e2f34fSNate Lawson 
26145d3d03f1SNate Lawson     mtx_unlock(&Giant);
2615c66d2b38SJung-uk Kim 
2616c66d2b38SJung-uk Kim #ifdef SMP
2617c66d2b38SJung-uk Kim     thread_lock(curthread);
2618c66d2b38SJung-uk Kim     sched_unbind(curthread);
2619c66d2b38SJung-uk Kim     thread_unlock(curthread);
2620c66d2b38SJung-uk Kim #endif
2621c66d2b38SJung-uk Kim 
2622d42f0ad8SJung-uk Kim     /* Allow another sleep request after a while. */
2623d42f0ad8SJung-uk Kim     timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME);
2624d42f0ad8SJung-uk Kim 
2625d42f0ad8SJung-uk Kim     /* Run /etc/rc.resume after we are back. */
2626d42f0ad8SJung-uk Kim     if (devctl_process_running())
2627d42f0ad8SJung-uk Kim 	acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2628d42f0ad8SJung-uk Kim 
26290ae55423SMike Smith     return_ACPI_STATUS (status);
263015e32d5dSMike Smith }
263115e32d5dSMike Smith 
26320755473bSJung-uk Kim void
26330755473bSJung-uk Kim acpi_resync_clock(struct acpi_softc *sc)
26340755473bSJung-uk Kim {
26350755473bSJung-uk Kim 
26360755473bSJung-uk Kim     if (!acpi_reset_clock)
26370755473bSJung-uk Kim 	return;
26380755473bSJung-uk Kim 
26390755473bSJung-uk Kim     /*
26400755473bSJung-uk Kim      * Warm up timecounter again and reset system clock.
26410755473bSJung-uk Kim      */
26420755473bSJung-uk Kim     (void)timecounter->tc_get_timecount(timecounter);
26430755473bSJung-uk Kim     (void)timecounter->tc_get_timecount(timecounter);
26440755473bSJung-uk Kim     inittodr(time_second + sc->acpi_sleep_delay);
26450755473bSJung-uk Kim }
26460755473bSJung-uk Kim 
2647e8b4d56eSNate Lawson /* Initialize a device's wake GPE. */
2648e8b4d56eSNate Lawson int
2649e8b4d56eSNate Lawson acpi_wake_init(device_t dev, int type)
2650e8b4d56eSNate Lawson {
2651e8b4d56eSNate Lawson     struct acpi_prw_data prw;
2652e8b4d56eSNate Lawson 
2653e8b4d56eSNate Lawson     /* Evaluate _PRW to find the GPE. */
2654e8b4d56eSNate Lawson     if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2655e8b4d56eSNate Lawson 	return (ENXIO);
2656e8b4d56eSNate Lawson 
2657e8b4d56eSNate Lawson     /* Set the requested type for the GPE (runtime, wake, or both). */
2658e8b4d56eSNate Lawson     if (ACPI_FAILURE(AcpiSetGpeType(prw.gpe_handle, prw.gpe_bit, type))) {
2659e8b4d56eSNate Lawson 	device_printf(dev, "set GPE type failed\n");
2660e8b4d56eSNate Lawson 	return (ENXIO);
2661e8b4d56eSNate Lawson     }
2662e8b4d56eSNate Lawson 
2663e8b4d56eSNate Lawson     return (0);
2664e8b4d56eSNate Lawson }
2665e8b4d56eSNate Lawson 
2666e8b4d56eSNate Lawson /* Enable or disable the device's wake GPE. */
2667e8b4d56eSNate Lawson int
2668e8b4d56eSNate Lawson acpi_wake_set_enable(device_t dev, int enable)
2669e8b4d56eSNate Lawson {
2670e8b4d56eSNate Lawson     struct acpi_prw_data prw;
2671e8b4d56eSNate Lawson     ACPI_STATUS status;
2672e8b4d56eSNate Lawson     int flags;
2673e8b4d56eSNate Lawson 
2674d4b9ff91SNate Lawson     /* Make sure the device supports waking the system and get the GPE. */
26752be4e471SJung-uk Kim     if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2676e8b4d56eSNate Lawson 	return (ENXIO);
2677e8b4d56eSNate Lawson 
2678d4b9ff91SNate Lawson     flags = acpi_get_flags(dev);
2679e8b4d56eSNate Lawson     if (enable) {
2680e8b4d56eSNate Lawson 	status = AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2681e8b4d56eSNate Lawson 	if (ACPI_FAILURE(status)) {
2682e8b4d56eSNate Lawson 	    device_printf(dev, "enable wake failed\n");
2683e8b4d56eSNate Lawson 	    return (ENXIO);
2684e8b4d56eSNate Lawson 	}
2685d4b9ff91SNate Lawson 	acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
2686e8b4d56eSNate Lawson     } else {
2687e8b4d56eSNate Lawson 	status = AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2688e8b4d56eSNate Lawson 	if (ACPI_FAILURE(status)) {
2689e8b4d56eSNate Lawson 	    device_printf(dev, "disable wake failed\n");
2690e8b4d56eSNate Lawson 	    return (ENXIO);
2691e8b4d56eSNate Lawson 	}
2692d4b9ff91SNate Lawson 	acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
2693e8b4d56eSNate Lawson     }
2694e8b4d56eSNate Lawson 
2695e8b4d56eSNate Lawson     return (0);
2696e8b4d56eSNate Lawson }
2697e8b4d56eSNate Lawson 
2698d4b9ff91SNate Lawson static int
2699d4b9ff91SNate Lawson acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
2700e8b4d56eSNate Lawson {
2701e8b4d56eSNate Lawson     struct acpi_prw_data prw;
2702d4b9ff91SNate Lawson     device_t dev;
2703e8b4d56eSNate Lawson 
2704d4b9ff91SNate Lawson     /* Check that this is a wake-capable device and get its GPE. */
2705e8b4d56eSNate Lawson     if (acpi_parse_prw(handle, &prw) != 0)
2706e8b4d56eSNate Lawson 	return (ENXIO);
2707d4b9ff91SNate Lawson     dev = acpi_get_device(handle);
2708e8b4d56eSNate Lawson 
2709e8b4d56eSNate Lawson     /*
2710d4b9ff91SNate Lawson      * The destination sleep state must be less than (i.e., higher power)
2711d4b9ff91SNate Lawson      * or equal to the value specified by _PRW.  If this GPE cannot be
2712d4b9ff91SNate Lawson      * enabled for the next sleep state, then disable it.  If it can and
2713d4b9ff91SNate Lawson      * the user requested it be enabled, turn on any required power resources
2714d4b9ff91SNate Lawson      * and set _PSW.
2715e8b4d56eSNate Lawson      */
2716d4b9ff91SNate Lawson     if (sstate > prw.lowest_wake) {
2717cc85c78cSNate Lawson 	AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2718e8b4d56eSNate Lawson 	if (bootverbose)
2719d4b9ff91SNate Lawson 	    device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
2720d4b9ff91SNate Lawson 		acpi_name(handle), sstate);
2721d4b9ff91SNate Lawson     } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
2722d4b9ff91SNate Lawson 	acpi_pwr_wake_enable(handle, 1);
2723d4b9ff91SNate Lawson 	acpi_SetInteger(handle, "_PSW", 1);
2724d4b9ff91SNate Lawson 	if (bootverbose)
2725d4b9ff91SNate Lawson 	    device_printf(dev, "wake_prep enabled for %s (S%d)\n",
2726d4b9ff91SNate Lawson 		acpi_name(handle), sstate);
2727d4b9ff91SNate Lawson     }
2728cc85c78cSNate Lawson 
2729cc85c78cSNate Lawson     return (0);
2730e8b4d56eSNate Lawson }
2731e8b4d56eSNate Lawson 
2732d4b9ff91SNate Lawson static int
2733d4b9ff91SNate Lawson acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
2734cc85c78cSNate Lawson {
2735cc85c78cSNate Lawson     struct acpi_prw_data prw;
2736d4b9ff91SNate Lawson     device_t dev;
2737cc85c78cSNate Lawson 
2738cc85c78cSNate Lawson     /*
2739d4b9ff91SNate Lawson      * Check that this is a wake-capable device and get its GPE.  Return
2740d4b9ff91SNate Lawson      * now if the user didn't enable this device for wake.
2741cc85c78cSNate Lawson      */
2742d4b9ff91SNate Lawson     if (acpi_parse_prw(handle, &prw) != 0)
2743d4b9ff91SNate Lawson 	return (ENXIO);
2744d4b9ff91SNate Lawson     dev = acpi_get_device(handle);
2745d4b9ff91SNate Lawson     if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
2746d4b9ff91SNate Lawson 	return (0);
2747cc85c78cSNate Lawson 
2748d4b9ff91SNate Lawson     /*
2749d4b9ff91SNate Lawson      * If this GPE couldn't be enabled for the previous sleep state, it was
2750d4b9ff91SNate Lawson      * disabled before going to sleep so re-enable it.  If it was enabled,
2751d4b9ff91SNate Lawson      * clear _PSW and turn off any power resources it used.
2752d4b9ff91SNate Lawson      */
2753d4b9ff91SNate Lawson     if (sstate > prw.lowest_wake) {
2754cc85c78cSNate Lawson 	AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2755d4b9ff91SNate Lawson 	if (bootverbose)
2756d4b9ff91SNate Lawson 	    device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
2757d4b9ff91SNate Lawson     } else {
2758d4b9ff91SNate Lawson 	acpi_SetInteger(handle, "_PSW", 0);
2759d4b9ff91SNate Lawson 	acpi_pwr_wake_enable(handle, 0);
2760d4b9ff91SNate Lawson 	if (bootverbose)
2761d4b9ff91SNate Lawson 	    device_printf(dev, "run_prep cleaned up for %s\n",
2762d4b9ff91SNate Lawson 		acpi_name(handle));
2763d4b9ff91SNate Lawson     }
2764d4b9ff91SNate Lawson 
2765e8b4d56eSNate Lawson     return (0);
2766e8b4d56eSNate Lawson }
2767e8b4d56eSNate Lawson 
2768e8b4d56eSNate Lawson static ACPI_STATUS
2769d4b9ff91SNate Lawson acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
2770e8b4d56eSNate Lawson {
2771d4b9ff91SNate Lawson     int sstate;
2772e8b4d56eSNate Lawson 
2773d4b9ff91SNate Lawson     /* If suspending, run the sleep prep function, otherwise wake. */
2774d4b9ff91SNate Lawson     sstate = *(int *)context;
2775d4b9ff91SNate Lawson     if (AcpiGbl_SystemAwakeAndRunning)
2776d4b9ff91SNate Lawson 	acpi_wake_sleep_prep(handle, sstate);
2777d4b9ff91SNate Lawson     else
2778d4b9ff91SNate Lawson 	acpi_wake_run_prep(handle, sstate);
2779e8b4d56eSNate Lawson     return (AE_OK);
2780e8b4d56eSNate Lawson }
2781e8b4d56eSNate Lawson 
2782d4b9ff91SNate Lawson /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
2783e8b4d56eSNate Lawson static int
2784d4b9ff91SNate Lawson acpi_wake_prep_walk(int sstate)
2785e8b4d56eSNate Lawson {
2786e8b4d56eSNate Lawson     ACPI_HANDLE sb_handle;
2787e8b4d56eSNate Lawson 
2788e8b4d56eSNate Lawson     if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
2789d4b9ff91SNate Lawson 	AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
2790d4b9ff91SNate Lawson 	    acpi_wake_prep, &sstate, NULL);
2791e8b4d56eSNate Lawson     return (0);
2792e8b4d56eSNate Lawson }
2793e8b4d56eSNate Lawson 
279488a79fc0SNate Lawson /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
279588a79fc0SNate Lawson static int
279688a79fc0SNate Lawson acpi_wake_sysctl_walk(device_t dev)
279788a79fc0SNate Lawson {
279888a79fc0SNate Lawson     int error, i, numdevs;
279988a79fc0SNate Lawson     device_t *devlist;
280088a79fc0SNate Lawson     device_t child;
2801d4b9ff91SNate Lawson     ACPI_STATUS status;
280288a79fc0SNate Lawson 
280388a79fc0SNate Lawson     error = device_get_children(dev, &devlist, &numdevs);
28041c9ec538SNate Lawson     if (error != 0 || numdevs == 0) {
28051c9ec538SNate Lawson 	if (numdevs == 0)
28061c9ec538SNate Lawson 	    free(devlist, M_TEMP);
280788a79fc0SNate Lawson 	return (error);
28081c9ec538SNate Lawson     }
280988a79fc0SNate Lawson     for (i = 0; i < numdevs; i++) {
281088a79fc0SNate Lawson 	child = devlist[i];
2811d4b9ff91SNate Lawson 	acpi_wake_sysctl_walk(child);
281288a79fc0SNate Lawson 	if (!device_is_attached(child))
281388a79fc0SNate Lawson 	    continue;
2814d4b9ff91SNate Lawson 	status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
2815d4b9ff91SNate Lawson 	if (ACPI_SUCCESS(status)) {
281688a79fc0SNate Lawson 	    SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
281788a79fc0SNate Lawson 		SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
281888a79fc0SNate Lawson 		"wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
281988a79fc0SNate Lawson 		acpi_wake_set_sysctl, "I", "Device set to wake the system");
282088a79fc0SNate Lawson 	}
282188a79fc0SNate Lawson     }
282288a79fc0SNate Lawson     free(devlist, M_TEMP);
282388a79fc0SNate Lawson 
282488a79fc0SNate Lawson     return (0);
282588a79fc0SNate Lawson }
282688a79fc0SNate Lawson 
282788a79fc0SNate Lawson /* Enable or disable wake from userland. */
282888a79fc0SNate Lawson static int
282988a79fc0SNate Lawson acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
283088a79fc0SNate Lawson {
283188a79fc0SNate Lawson     int enable, error;
283288a79fc0SNate Lawson     device_t dev;
283388a79fc0SNate Lawson 
283488a79fc0SNate Lawson     dev = (device_t)arg1;
2835d4b9ff91SNate Lawson     enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
283688a79fc0SNate Lawson 
283788a79fc0SNate Lawson     error = sysctl_handle_int(oidp, &enable, 0, req);
283888a79fc0SNate Lawson     if (error != 0 || req->newptr == NULL)
283988a79fc0SNate Lawson 	return (error);
284088a79fc0SNate Lawson     if (enable != 0 && enable != 1)
284188a79fc0SNate Lawson 	return (EINVAL);
284288a79fc0SNate Lawson 
284388a79fc0SNate Lawson     return (acpi_wake_set_enable(dev, enable));
284488a79fc0SNate Lawson }
284588a79fc0SNate Lawson 
2846e8b4d56eSNate Lawson /* Parse a device's _PRW into a structure. */
2847d4b9ff91SNate Lawson int
2848e8b4d56eSNate Lawson acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2849e8b4d56eSNate Lawson {
2850e8b4d56eSNate Lawson     ACPI_STATUS			status;
2851e8b4d56eSNate Lawson     ACPI_BUFFER			prw_buffer;
2852e8b4d56eSNate Lawson     ACPI_OBJECT			*res, *res2;
2853d4b9ff91SNate Lawson     int				error, i, power_count;
2854e8b4d56eSNate Lawson 
2855e8b4d56eSNate Lawson     if (h == NULL || prw == NULL)
2856e8b4d56eSNate Lawson 	return (EINVAL);
2857e8b4d56eSNate Lawson 
2858e8b4d56eSNate Lawson     /*
2859e8b4d56eSNate Lawson      * The _PRW object (7.2.9) is only required for devices that have the
2860e8b4d56eSNate Lawson      * ability to wake the system from a sleeping state.
2861e8b4d56eSNate Lawson      */
2862e8b4d56eSNate Lawson     error = EINVAL;
2863e8b4d56eSNate Lawson     prw_buffer.Pointer = NULL;
2864e8b4d56eSNate Lawson     prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2865e8b4d56eSNate Lawson     status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2866e8b4d56eSNate Lawson     if (ACPI_FAILURE(status))
2867e8b4d56eSNate Lawson 	return (ENOENT);
2868e8b4d56eSNate Lawson     res = (ACPI_OBJECT *)prw_buffer.Pointer;
2869e8b4d56eSNate Lawson     if (res == NULL)
2870e8b4d56eSNate Lawson 	return (ENOENT);
2871e8b4d56eSNate Lawson     if (!ACPI_PKG_VALID(res, 2))
2872e8b4d56eSNate Lawson 	goto out;
2873e8b4d56eSNate Lawson 
2874e8b4d56eSNate Lawson     /*
2875e8b4d56eSNate Lawson      * Element 1 of the _PRW object:
2876e8b4d56eSNate Lawson      * The lowest power system sleeping state that can be entered while still
2877e8b4d56eSNate Lawson      * providing wake functionality.  The sleeping state being entered must
2878e8b4d56eSNate Lawson      * be less than (i.e., higher power) or equal to this value.
2879e8b4d56eSNate Lawson      */
2880e8b4d56eSNate Lawson     if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2881e8b4d56eSNate Lawson 	goto out;
2882e8b4d56eSNate Lawson 
2883e8b4d56eSNate Lawson     /*
2884e8b4d56eSNate Lawson      * Element 0 of the _PRW object:
2885e8b4d56eSNate Lawson      */
2886e8b4d56eSNate Lawson     switch (res->Package.Elements[0].Type) {
2887e8b4d56eSNate Lawson     case ACPI_TYPE_INTEGER:
2888e8b4d56eSNate Lawson 	/*
2889e8b4d56eSNate Lawson 	 * If the data type of this package element is numeric, then this
2890e8b4d56eSNate Lawson 	 * _PRW package element is the bit index in the GPEx_EN, in the
2891e8b4d56eSNate Lawson 	 * GPE blocks described in the FADT, of the enable bit that is
2892e8b4d56eSNate Lawson 	 * enabled for the wake event.
2893e8b4d56eSNate Lawson 	 */
2894e8b4d56eSNate Lawson 	prw->gpe_handle = NULL;
2895e8b4d56eSNate Lawson 	prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2896e8b4d56eSNate Lawson 	error = 0;
2897e8b4d56eSNate Lawson 	break;
2898e8b4d56eSNate Lawson     case ACPI_TYPE_PACKAGE:
2899e8b4d56eSNate Lawson 	/*
2900e8b4d56eSNate Lawson 	 * If the data type of this package element is a package, then this
2901e8b4d56eSNate Lawson 	 * _PRW package element is itself a package containing two
2902e8b4d56eSNate Lawson 	 * elements.  The first is an object reference to the GPE Block
2903e8b4d56eSNate Lawson 	 * device that contains the GPE that will be triggered by the wake
2904e8b4d56eSNate Lawson 	 * event.  The second element is numeric and it contains the bit
2905e8b4d56eSNate Lawson 	 * index in the GPEx_EN, in the GPE Block referenced by the
2906e8b4d56eSNate Lawson 	 * first element in the package, of the enable bit that is enabled for
2907e8b4d56eSNate Lawson 	 * the wake event.
2908e8b4d56eSNate Lawson 	 *
2909e8b4d56eSNate Lawson 	 * For example, if this field is a package then it is of the form:
2910e8b4d56eSNate Lawson 	 * Package() {\_SB.PCI0.ISA.GPE, 2}
2911e8b4d56eSNate Lawson 	 */
2912e8b4d56eSNate Lawson 	res2 = &res->Package.Elements[0];
2913e8b4d56eSNate Lawson 	if (!ACPI_PKG_VALID(res2, 2))
2914e8b4d56eSNate Lawson 	    goto out;
2915e8b4d56eSNate Lawson 	prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2916e8b4d56eSNate Lawson 	if (prw->gpe_handle == NULL)
2917e8b4d56eSNate Lawson 	    goto out;
2918e8b4d56eSNate Lawson 	if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2919e8b4d56eSNate Lawson 	    goto out;
2920e8b4d56eSNate Lawson 	error = 0;
2921e8b4d56eSNate Lawson 	break;
2922e8b4d56eSNate Lawson     default:
2923e8b4d56eSNate Lawson 	goto out;
2924e8b4d56eSNate Lawson     }
2925e8b4d56eSNate Lawson 
2926d4b9ff91SNate Lawson     /* Elements 2 to N of the _PRW object are power resources. */
2927d4b9ff91SNate Lawson     power_count = res->Package.Count - 2;
2928d4b9ff91SNate Lawson     if (power_count > ACPI_PRW_MAX_POWERRES) {
2929d4b9ff91SNate Lawson 	printf("ACPI device %s has too many power resources\n", acpi_name(h));
2930d4b9ff91SNate Lawson 	power_count = 0;
2931d4b9ff91SNate Lawson     }
2932d4b9ff91SNate Lawson     prw->power_res_count = power_count;
2933d4b9ff91SNate Lawson     for (i = 0; i < power_count; i++)
2934d4b9ff91SNate Lawson 	prw->power_res[i] = res->Package.Elements[i];
2935e8b4d56eSNate Lawson 
2936e8b4d56eSNate Lawson out:
2937e8b4d56eSNate Lawson     if (prw_buffer.Pointer != NULL)
2938e8b4d56eSNate Lawson 	AcpiOsFree(prw_buffer.Pointer);
2939e8b4d56eSNate Lawson     return (error);
2940e8b4d56eSNate Lawson }
2941e8b4d56eSNate Lawson 
294215e32d5dSMike Smith /*
294315e32d5dSMike Smith  * ACPI Event Handlers
294415e32d5dSMike Smith  */
294515e32d5dSMike Smith 
294615e32d5dSMike Smith /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
294715e32d5dSMike Smith 
294815e32d5dSMike Smith static void
294915e32d5dSMike Smith acpi_system_eventhandler_sleep(void *arg, int state)
295015e32d5dSMike Smith {
29512d0c82e8SJung-uk Kim     struct acpi_softc *sc = (struct acpi_softc *)arg;
295200a30448SNate Lawson     int ret;
2953bee4aa4aSNate Lawson 
2954b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
295515e32d5dSMike Smith 
2956a0e73a12SJung-uk Kim     /* Check if button action is disabled or unknown. */
2957a0e73a12SJung-uk Kim     if (state == ACPI_STATE_UNKNOWN)
2958813d6dcaSNate Lawson 	return;
2959813d6dcaSNate Lawson 
296000a30448SNate Lawson     /* Request that the system prepare to enter the given suspend state. */
29612d0c82e8SJung-uk Kim     ret = acpi_ReqSleepState(sc, state);
296200a30448SNate Lawson     if (ret != 0)
29632d0c82e8SJung-uk Kim 	device_printf(sc->acpi_dev,
29642d0c82e8SJung-uk Kim 	    "request to enter state S%d failed (err %d)\n", state, ret);
2965bee4aa4aSNate Lawson 
29660ae55423SMike Smith     return_VOID;
296715e32d5dSMike Smith }
296815e32d5dSMike Smith 
296915e32d5dSMike Smith static void
297015e32d5dSMike Smith acpi_system_eventhandler_wakeup(void *arg, int state)
297115e32d5dSMike Smith {
2972bee4aa4aSNate Lawson 
2973b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
29740ae55423SMike Smith 
2975bee4aa4aSNate Lawson     /* Currently, nothing to do for wakeup. */
2976cb9b0d80SMike Smith 
29770ae55423SMike Smith     return_VOID;
297815e32d5dSMike Smith }
297915e32d5dSMike Smith 
298015e32d5dSMike Smith /*
298115e32d5dSMike Smith  * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
298215e32d5dSMike Smith  */
298315e32d5dSMike Smith UINT32
298433febf93SNate Lawson acpi_event_power_button_sleep(void *context)
298515e32d5dSMike Smith {
298615e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
298715e32d5dSMike Smith 
2988b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
29890ae55423SMike Smith 
299015e32d5dSMike Smith     EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
29910ae55423SMike Smith 
2992b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
299315e32d5dSMike Smith }
299415e32d5dSMike Smith 
299515e32d5dSMike Smith UINT32
299633febf93SNate Lawson acpi_event_power_button_wake(void *context)
299715e32d5dSMike Smith {
299815e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
299915e32d5dSMike Smith 
3000b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
30010ae55423SMike Smith 
300215e32d5dSMike Smith     EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
30030ae55423SMike Smith 
3004b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
300515e32d5dSMike Smith }
300615e32d5dSMike Smith 
300715e32d5dSMike Smith UINT32
300833febf93SNate Lawson acpi_event_sleep_button_sleep(void *context)
300915e32d5dSMike Smith {
301015e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
301115e32d5dSMike Smith 
3012b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
30130ae55423SMike Smith 
301415e32d5dSMike Smith     EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
30150ae55423SMike Smith 
3016b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
301715e32d5dSMike Smith }
301815e32d5dSMike Smith 
301915e32d5dSMike Smith UINT32
302033febf93SNate Lawson acpi_event_sleep_button_wake(void *context)
302115e32d5dSMike Smith {
302215e32d5dSMike Smith     struct acpi_softc	*sc = (struct acpi_softc *)context;
302315e32d5dSMike Smith 
3024b4a05238SPeter Wemm     ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
30250ae55423SMike Smith 
302615e32d5dSMike Smith     EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
30270ae55423SMike Smith 
3028b53f2771SMike Smith     return_VALUE (ACPI_INTERRUPT_HANDLED);
302915e32d5dSMike Smith }
303015e32d5dSMike Smith 
303115e32d5dSMike Smith /*
3032bee4aa4aSNate Lawson  * XXX This static buffer is suboptimal.  There is no locking so only
3033bee4aa4aSNate Lawson  * use this for single-threaded callers.
303415e32d5dSMike Smith  */
303515e32d5dSMike Smith char *
303615e32d5dSMike Smith acpi_name(ACPI_HANDLE handle)
303715e32d5dSMike Smith {
3038bee4aa4aSNate Lawson     ACPI_BUFFER buf;
3039bee4aa4aSNate Lawson     static char data[256];
304015e32d5dSMike Smith 
3041bee4aa4aSNate Lawson     buf.Length = sizeof(data);
3042bee4aa4aSNate Lawson     buf.Pointer = data;
3043cb9b0d80SMike Smith 
30440a9a1f44SNate Lawson     if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
3045bee4aa4aSNate Lawson 	return (data);
3046bee4aa4aSNate Lawson     return ("(unknown)");
304715e32d5dSMike Smith }
304815e32d5dSMike Smith 
304915e32d5dSMike Smith /*
305015e32d5dSMike Smith  * Debugging/bug-avoidance.  Avoid trying to fetch info on various
305115e32d5dSMike Smith  * parts of the namespace.
305215e32d5dSMike Smith  */
305315e32d5dSMike Smith int
305415e32d5dSMike Smith acpi_avoid(ACPI_HANDLE handle)
305515e32d5dSMike Smith {
30563c600cfbSJohn Baldwin     char	*cp, *env, *np;
305715e32d5dSMike Smith     int		len;
305815e32d5dSMike Smith 
305915e32d5dSMike Smith     np = acpi_name(handle);
306015e32d5dSMike Smith     if (*np == '\\')
306115e32d5dSMike Smith 	np++;
30623c600cfbSJohn Baldwin     if ((env = getenv("debug.acpi.avoid")) == NULL)
306315e32d5dSMike Smith 	return (0);
306415e32d5dSMike Smith 
3065be2b1797SNate Lawson     /* Scan the avoid list checking for a match */
30663c600cfbSJohn Baldwin     cp = env;
306715e32d5dSMike Smith     for (;;) {
3068bee4aa4aSNate Lawson 	while (*cp != 0 && isspace(*cp))
306915e32d5dSMike Smith 	    cp++;
307015e32d5dSMike Smith 	if (*cp == 0)
307115e32d5dSMike Smith 	    break;
307215e32d5dSMike Smith 	len = 0;
3073bee4aa4aSNate Lawson 	while (cp[len] != 0 && !isspace(cp[len]))
307415e32d5dSMike Smith 	    len++;
3075d786139cSMaxime Henrion 	if (!strncmp(cp, np, len)) {
30763c600cfbSJohn Baldwin 	    freeenv(env);
30770ae55423SMike Smith 	    return(1);
3078d786139cSMaxime Henrion 	}
30790ae55423SMike Smith 	cp += len;
30800ae55423SMike Smith     }
30813c600cfbSJohn Baldwin     freeenv(env);
3082be2b1797SNate Lawson 
30830ae55423SMike Smith     return (0);
30840ae55423SMike Smith }
30850ae55423SMike Smith 
30860ae55423SMike Smith /*
30870ae55423SMike Smith  * Debugging/bug-avoidance.  Disable ACPI subsystem components.
30880ae55423SMike Smith  */
30890ae55423SMike Smith int
30900ae55423SMike Smith acpi_disabled(char *subsys)
30910ae55423SMike Smith {
309278689b15SMaxime Henrion     char	*cp, *env;
30930ae55423SMike Smith     int		len;
30940ae55423SMike Smith 
30953184cf5aSNate Lawson     if ((env = getenv("debug.acpi.disabled")) == NULL)
30960ae55423SMike Smith 	return (0);
30973184cf5aSNate Lawson     if (strcmp(env, "all") == 0) {
309878689b15SMaxime Henrion 	freeenv(env);
30990ae55423SMike Smith 	return (1);
3100d786139cSMaxime Henrion     }
31010ae55423SMike Smith 
31023184cf5aSNate Lawson     /* Scan the disable list, checking for a match. */
310378689b15SMaxime Henrion     cp = env;
31040ae55423SMike Smith     for (;;) {
31053184cf5aSNate Lawson 	while (*cp != '\0' && isspace(*cp))
31060ae55423SMike Smith 	    cp++;
31073184cf5aSNate Lawson 	if (*cp == '\0')
31080ae55423SMike Smith 	    break;
31090ae55423SMike Smith 	len = 0;
31103184cf5aSNate Lawson 	while (cp[len] != '\0' && !isspace(cp[len]))
31110ae55423SMike Smith 	    len++;
31123184cf5aSNate Lawson 	if (strncmp(cp, subsys, len) == 0) {
311378689b15SMaxime Henrion 	    freeenv(env);
311415e32d5dSMike Smith 	    return (1);
3115d786139cSMaxime Henrion 	}
311615e32d5dSMike Smith 	cp += len;
311715e32d5dSMike Smith     }
311878689b15SMaxime Henrion     freeenv(env);
3119be2b1797SNate Lawson 
312015e32d5dSMike Smith     return (0);
312115e32d5dSMike Smith }
312215e32d5dSMike Smith 
312315e32d5dSMike Smith /*
312415e32d5dSMike Smith  * Control interface.
312515e32d5dSMike Smith  *
31260ae55423SMike Smith  * We multiplex ioctls for all participating ACPI devices here.  Individual
3127be2b1797SNate Lawson  * drivers wanting to be accessible via /dev/acpi should use the
3128be2b1797SNate Lawson  * register/deregister interface to make their handlers visible.
312915e32d5dSMike Smith  */
31300ae55423SMike Smith struct acpi_ioctl_hook
31310ae55423SMike Smith {
31320ae55423SMike Smith     TAILQ_ENTRY(acpi_ioctl_hook) link;
31330ae55423SMike Smith     u_long			 cmd;
3134be2b1797SNate Lawson     acpi_ioctl_fn		 fn;
31350ae55423SMike Smith     void			 *arg;
31360ae55423SMike Smith };
31370ae55423SMike Smith 
31380ae55423SMike Smith static TAILQ_HEAD(,acpi_ioctl_hook)	acpi_ioctl_hooks;
31390ae55423SMike Smith static int				acpi_ioctl_hooks_initted;
31400ae55423SMike Smith 
31410ae55423SMike Smith int
3142be2b1797SNate Lawson acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
31430ae55423SMike Smith {
31440ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
31450ae55423SMike Smith 
31460ae55423SMike Smith     if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
31470ae55423SMike Smith 	return (ENOMEM);
31480ae55423SMike Smith     hp->cmd = cmd;
31490ae55423SMike Smith     hp->fn = fn;
31500ae55423SMike Smith     hp->arg = arg;
315115e2f34fSNate Lawson 
315215e2f34fSNate Lawson     ACPI_LOCK(acpi);
31530ae55423SMike Smith     if (acpi_ioctl_hooks_initted == 0) {
31540ae55423SMike Smith 	TAILQ_INIT(&acpi_ioctl_hooks);
31550ae55423SMike Smith 	acpi_ioctl_hooks_initted = 1;
31560ae55423SMike Smith     }
31570ae55423SMike Smith     TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
315815e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
315915e2f34fSNate Lawson 
31600ae55423SMike Smith     return (0);
31610ae55423SMike Smith }
31620ae55423SMike Smith 
31630ae55423SMike Smith void
3164be2b1797SNate Lawson acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
31650ae55423SMike Smith {
31660ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
31670ae55423SMike Smith 
316815e2f34fSNate Lawson     ACPI_LOCK(acpi);
31690ae55423SMike Smith     TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
317015e2f34fSNate Lawson 	if (hp->cmd == cmd && hp->fn == fn)
31710ae55423SMike Smith 	    break;
31720ae55423SMike Smith 
31730ae55423SMike Smith     if (hp != NULL) {
31740ae55423SMike Smith 	TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
31750ae55423SMike Smith 	free(hp, M_ACPIDEV);
31760ae55423SMike Smith     }
317715e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
31780ae55423SMike Smith }
31790ae55423SMike Smith 
318015e32d5dSMike Smith static int
318100b4e54aSWarner Losh acpiopen(struct cdev *dev, int flag, int fmt, struct thread *td)
318215e32d5dSMike Smith {
318315e32d5dSMike Smith     return (0);
318415e32d5dSMike Smith }
318515e32d5dSMike Smith 
318615e32d5dSMike Smith static int
318700b4e54aSWarner Losh acpiclose(struct cdev *dev, int flag, int fmt, struct thread *td)
318815e32d5dSMike Smith {
318915e32d5dSMike Smith     return (0);
319015e32d5dSMike Smith }
319115e32d5dSMike Smith 
319215e32d5dSMike Smith static int
319300b4e54aSWarner Losh acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
319415e32d5dSMike Smith {
319515e32d5dSMike Smith     struct acpi_softc		*sc;
31960ae55423SMike Smith     struct acpi_ioctl_hook	*hp;
3197bee4aa4aSNate Lawson     int				error, state;
319815e32d5dSMike Smith 
3199a2e35898SDavid E. O'Brien     error = 0;
3200a2e35898SDavid E. O'Brien     hp = NULL;
320115e32d5dSMike Smith     sc = dev->si_drv1;
320215e32d5dSMike Smith 
32030ae55423SMike Smith     /*
32040ae55423SMike Smith      * Scan the list of registered ioctls, looking for handlers.
32050ae55423SMike Smith      */
320615e2f34fSNate Lawson     ACPI_LOCK(acpi);
3207bee4aa4aSNate Lawson     if (acpi_ioctl_hooks_initted)
32080ae55423SMike Smith 	TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3209bee4aa4aSNate Lawson 	    if (hp->cmd == cmd)
3210bee4aa4aSNate Lawson 		break;
32110ae55423SMike Smith 	}
321215e2f34fSNate Lawson     ACPI_UNLOCK(acpi);
3213bee4aa4aSNate Lawson     if (hp)
3214bee4aa4aSNate Lawson 	return (hp->fn(cmd, addr, hp->arg));
32150ae55423SMike Smith 
32160ae55423SMike Smith     /*
3217a89fcf28STakanori Watanabe      * Core ioctls are not permitted for non-writable user.
3218a89fcf28STakanori Watanabe      * Currently, other ioctls just fetch information.
3219a89fcf28STakanori Watanabe      * Not changing system behavior.
3220a89fcf28STakanori Watanabe      */
3221be2b1797SNate Lawson     if ((flag & FWRITE) == 0)
3222be2b1797SNate Lawson 	return (EPERM);
3223a89fcf28STakanori Watanabe 
3224be2b1797SNate Lawson     /* Core system ioctls. */
322515e32d5dSMike Smith     switch (cmd) {
322600a30448SNate Lawson     case ACPIIO_REQSLPSTATE:
322700a30448SNate Lawson 	state = *(int *)addr;
322800a30448SNate Lawson 	if (state != ACPI_STATE_S5)
3229a0e73a12SJung-uk Kim 	    return (acpi_ReqSleepState(sc, state));
3230a0e73a12SJung-uk Kim 	device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n");
3231a0e73a12SJung-uk Kim 	error = EOPNOTSUPP;
323200a30448SNate Lawson 	break;
323300a30448SNate Lawson     case ACPIIO_ACKSLPSTATE:
323400a30448SNate Lawson 	error = *(int *)addr;
323500a30448SNate Lawson 	error = acpi_AckSleepState(sc->acpi_clone, error);
323600a30448SNate Lawson 	break;
323700a30448SNate Lawson     case ACPIIO_SETSLPSTATE:	/* DEPRECATED */
323815e32d5dSMike Smith 	state = *(int *)addr;
3239a0e73a12SJung-uk Kim 	if (state < ACPI_STATE_S0 || state > ACPI_S_STATES_MAX)
3240a0e73a12SJung-uk Kim 	    return (EINVAL);
3241a0e73a12SJung-uk Kim 	if (!acpi_sleep_states[state])
3242a0e73a12SJung-uk Kim 	    return (EOPNOTSUPP);
3243a0e73a12SJung-uk Kim 	if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
3244a0e73a12SJung-uk Kim 	    error = ENXIO;
324515e32d5dSMike Smith 	break;
324615e32d5dSMike Smith     default:
3247bee4aa4aSNate Lawson 	error = ENXIO;
324815e32d5dSMike Smith 	break;
324915e32d5dSMike Smith     }
3250917d44c8SMitsuru IWASAKI 
325115e32d5dSMike Smith     return (error);
325215e32d5dSMike Smith }
325315e32d5dSMike Smith 
32541d073b1dSJohn Baldwin static int
3255a0e73a12SJung-uk Kim acpi_sname2sstate(const char *sname)
3256a0e73a12SJung-uk Kim {
3257a0e73a12SJung-uk Kim     int sstate;
3258a0e73a12SJung-uk Kim 
3259a0e73a12SJung-uk Kim     if (toupper(sname[0]) == 'S') {
3260a0e73a12SJung-uk Kim 	sstate = sname[1] - '0';
3261a0e73a12SJung-uk Kim 	if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5 &&
3262a0e73a12SJung-uk Kim 	    sname[2] == '\0')
3263a0e73a12SJung-uk Kim 	    return (sstate);
3264a0e73a12SJung-uk Kim     } else if (strcasecmp(sname, "NONE") == 0)
3265a0e73a12SJung-uk Kim 	return (ACPI_STATE_UNKNOWN);
3266a0e73a12SJung-uk Kim     return (-1);
3267a0e73a12SJung-uk Kim }
3268a0e73a12SJung-uk Kim 
3269a0e73a12SJung-uk Kim static const char *
3270a0e73a12SJung-uk Kim acpi_sstate2sname(int sstate)
3271a0e73a12SJung-uk Kim {
3272a0e73a12SJung-uk Kim     static const char *snames[] = { "S0", "S1", "S2", "S3", "S4", "S5" };
3273a0e73a12SJung-uk Kim 
3274a0e73a12SJung-uk Kim     if (sstate >= ACPI_STATE_S0 && sstate <= ACPI_STATE_S5)
3275a0e73a12SJung-uk Kim 	return (snames[sstate]);
3276a0e73a12SJung-uk Kim     else if (sstate == ACPI_STATE_UNKNOWN)
3277a0e73a12SJung-uk Kim 	return ("NONE");
3278a0e73a12SJung-uk Kim     return (NULL);
3279a0e73a12SJung-uk Kim }
3280a0e73a12SJung-uk Kim 
3281a0e73a12SJung-uk Kim static int
3282d75de536SMitsuru IWASAKI acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3283d75de536SMitsuru IWASAKI {
3284d75de536SMitsuru IWASAKI     int error;
3285bee4aa4aSNate Lawson     struct sbuf sb;
3286a0e73a12SJung-uk Kim     UINT8 state;
3287d75de536SMitsuru IWASAKI 
3288bee4aa4aSNate Lawson     sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3289a0e73a12SJung-uk Kim     for (state = ACPI_STATE_S1; state < ACPI_S_STATE_COUNT; state++)
3290a0e73a12SJung-uk Kim 	if (acpi_sleep_states[state])
3291a0e73a12SJung-uk Kim 	    sbuf_printf(&sb, "%s ", acpi_sstate2sname(state));
3292bee4aa4aSNate Lawson     sbuf_trim(&sb);
3293bee4aa4aSNate Lawson     sbuf_finish(&sb);
3294bee4aa4aSNate Lawson     error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3295bee4aa4aSNate Lawson     sbuf_delete(&sb);
3296d75de536SMitsuru IWASAKI     return (error);
3297d75de536SMitsuru IWASAKI }
3298d75de536SMitsuru IWASAKI 
3299d75de536SMitsuru IWASAKI static int
33001d073b1dSJohn Baldwin acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
33011d073b1dSJohn Baldwin {
33021d073b1dSJohn Baldwin     char sleep_state[10];
3303a0e73a12SJung-uk Kim     int error, new_state, old_state;
33041d073b1dSJohn Baldwin 
3305a0e73a12SJung-uk Kim     old_state = *(int *)oidp->oid_arg1;
3306a0e73a12SJung-uk Kim     strlcpy(sleep_state, acpi_sstate2sname(old_state), sizeof(sleep_state));
33071d073b1dSJohn Baldwin     error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
33081d073b1dSJohn Baldwin     if (error == 0 && req->newptr != NULL) {
3309a0e73a12SJung-uk Kim 	new_state = acpi_sname2sstate(sleep_state);
3310a0e73a12SJung-uk Kim 	if (new_state < ACPI_STATE_S1)
3311a0e73a12SJung-uk Kim 	    return (EINVAL);
331254b43614SJung-uk Kim 	if (new_state < ACPI_S_STATE_COUNT && !acpi_sleep_states[new_state])
3313a0e73a12SJung-uk Kim 	    return (EOPNOTSUPP);
3314be2b1797SNate Lawson 	if (new_state != old_state)
3315a0e73a12SJung-uk Kim 	    *(int *)oidp->oid_arg1 = new_state;
33161d073b1dSJohn Baldwin     }
33171d073b1dSJohn Baldwin     return (error);
33181d073b1dSJohn Baldwin }
33191d073b1dSJohn Baldwin 
33209b937d48SNate Lawson /* Inform devctl(4) when we receive a Notify. */
33219b937d48SNate Lawson void
33229b937d48SNate Lawson acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
33239b937d48SNate Lawson {
33249b937d48SNate Lawson     char		notify_buf[16];
33259b937d48SNate Lawson     ACPI_BUFFER		handle_buf;
33269b937d48SNate Lawson     ACPI_STATUS		status;
33279b937d48SNate Lawson 
33289b937d48SNate Lawson     if (subsystem == NULL)
33299b937d48SNate Lawson 	return;
33309b937d48SNate Lawson 
33319b937d48SNate Lawson     handle_buf.Pointer = NULL;
33329b937d48SNate Lawson     handle_buf.Length = ACPI_ALLOCATE_BUFFER;
33339b937d48SNate Lawson     status = AcpiNsHandleToPathname(h, &handle_buf);
33349b937d48SNate Lawson     if (ACPI_FAILURE(status))
33359b937d48SNate Lawson 	return;
33369b937d48SNate Lawson     snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
33379b937d48SNate Lawson     devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
33389b937d48SNate Lawson     AcpiOsFree(handle_buf.Pointer);
33399b937d48SNate Lawson }
33409b937d48SNate Lawson 
334115e32d5dSMike Smith #ifdef ACPI_DEBUG
33420ae55423SMike Smith /*
33430ae55423SMike Smith  * Support for parsing debug options from the kernel environment.
33440ae55423SMike Smith  *
33450ae55423SMike Smith  * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
33460ae55423SMike Smith  * by specifying the names of the bits in the debug.acpi.layer and
33470ae55423SMike Smith  * debug.acpi.level environment variables.  Bits may be unset by
33480ae55423SMike Smith  * prefixing the bit name with !.
33490ae55423SMike Smith  */
335015e32d5dSMike Smith struct debugtag
335115e32d5dSMike Smith {
335215e32d5dSMike Smith     char	*name;
335315e32d5dSMike Smith     UINT32	value;
335415e32d5dSMike Smith };
335515e32d5dSMike Smith 
335615e32d5dSMike Smith static struct debugtag	dbg_layer[] = {
3357c5ba0be4SMike Smith     {"ACPI_UTILITIES",		ACPI_UTILITIES},
3358c5ba0be4SMike Smith     {"ACPI_HARDWARE",		ACPI_HARDWARE},
3359c5ba0be4SMike Smith     {"ACPI_EVENTS",		ACPI_EVENTS},
3360c5ba0be4SMike Smith     {"ACPI_TABLES",		ACPI_TABLES},
3361c5ba0be4SMike Smith     {"ACPI_NAMESPACE",		ACPI_NAMESPACE},
3362c5ba0be4SMike Smith     {"ACPI_PARSER",		ACPI_PARSER},
3363c5ba0be4SMike Smith     {"ACPI_DISPATCHER",		ACPI_DISPATCHER},
3364c5ba0be4SMike Smith     {"ACPI_EXECUTER",		ACPI_EXECUTER},
3365c5ba0be4SMike Smith     {"ACPI_RESOURCES",		ACPI_RESOURCES},
3366d62ab2f4SMitsuru IWASAKI     {"ACPI_CA_DEBUGGER",	ACPI_CA_DEBUGGER},
33674c1cdee6SMike Smith     {"ACPI_OS_SERVICES",	ACPI_OS_SERVICES},
3368d62ab2f4SMitsuru IWASAKI     {"ACPI_CA_DISASSEMBLER",	ACPI_CA_DISASSEMBLER},
3369297835bcSNate Lawson     {"ACPI_ALL_COMPONENTS",	ACPI_ALL_COMPONENTS},
33704c1cdee6SMike Smith 
3371c5ba0be4SMike Smith     {"ACPI_AC_ADAPTER",		ACPI_AC_ADAPTER},
3372c5ba0be4SMike Smith     {"ACPI_BATTERY",		ACPI_BATTERY},
33733184cf5aSNate Lawson     {"ACPI_BUS",		ACPI_BUS},
3374c5ba0be4SMike Smith     {"ACPI_BUTTON",		ACPI_BUTTON},
33753184cf5aSNate Lawson     {"ACPI_EC", 		ACPI_EC},
33763184cf5aSNate Lawson     {"ACPI_FAN",		ACPI_FAN},
33773184cf5aSNate Lawson     {"ACPI_POWERRES",		ACPI_POWERRES},
33784c1cdee6SMike Smith     {"ACPI_PROCESSOR",		ACPI_PROCESSOR},
3379cb9b0d80SMike Smith     {"ACPI_THERMAL",		ACPI_THERMAL},
33803184cf5aSNate Lawson     {"ACPI_TIMER",		ACPI_TIMER},
3381b53f2771SMike Smith     {"ACPI_ALL_DRIVERS",	ACPI_ALL_DRIVERS},
338215e32d5dSMike Smith     {NULL, 0}
338315e32d5dSMike Smith };
338415e32d5dSMike Smith 
338515e32d5dSMike Smith static struct debugtag dbg_level[] = {
33869501b603SJohn Baldwin     {"ACPI_LV_INIT",		ACPI_LV_INIT},
33874c1cdee6SMike Smith     {"ACPI_LV_DEBUG_OBJECT",	ACPI_LV_DEBUG_OBJECT},
33889501b603SJohn Baldwin     {"ACPI_LV_INFO",		ACPI_LV_INFO},
33894c1cdee6SMike Smith     {"ACPI_LV_ALL_EXCEPTIONS",	ACPI_LV_ALL_EXCEPTIONS},
3390d62ab2f4SMitsuru IWASAKI 
3391d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 1 [Standard Trace Level] */
3392297835bcSNate Lawson     {"ACPI_LV_INIT_NAMES",	ACPI_LV_INIT_NAMES},
33934c1cdee6SMike Smith     {"ACPI_LV_PARSE",		ACPI_LV_PARSE},
33944c1cdee6SMike Smith     {"ACPI_LV_LOAD",		ACPI_LV_LOAD},
3395d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_DISPATCH",	ACPI_LV_DISPATCH},
33964c1cdee6SMike Smith     {"ACPI_LV_EXEC",		ACPI_LV_EXEC},
33974c1cdee6SMike Smith     {"ACPI_LV_NAMES",		ACPI_LV_NAMES},
33984c1cdee6SMike Smith     {"ACPI_LV_OPREGION",	ACPI_LV_OPREGION},
33994c1cdee6SMike Smith     {"ACPI_LV_BFIELD",		ACPI_LV_BFIELD},
34004c1cdee6SMike Smith     {"ACPI_LV_TABLES",		ACPI_LV_TABLES},
34014c1cdee6SMike Smith     {"ACPI_LV_VALUES",		ACPI_LV_VALUES},
34024c1cdee6SMike Smith     {"ACPI_LV_OBJECTS",		ACPI_LV_OBJECTS},
34034c1cdee6SMike Smith     {"ACPI_LV_RESOURCES",	ACPI_LV_RESOURCES},
34044c1cdee6SMike Smith     {"ACPI_LV_USER_REQUESTS",	ACPI_LV_USER_REQUESTS},
34054c1cdee6SMike Smith     {"ACPI_LV_PACKAGE",		ACPI_LV_PACKAGE},
3406d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY1",	ACPI_LV_VERBOSITY1},
3407d62ab2f4SMitsuru IWASAKI 
3408d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 2 [Function tracing and memory allocation] */
3409d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_ALLOCATIONS",	ACPI_LV_ALLOCATIONS},
3410d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_FUNCTIONS",	ACPI_LV_FUNCTIONS},
3411d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_OPTIMIZATIONS",	ACPI_LV_OPTIMIZATIONS},
3412d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY2",	ACPI_LV_VERBOSITY2},
34134c1cdee6SMike Smith     {"ACPI_LV_ALL",		ACPI_LV_ALL},
3414d62ab2f4SMitsuru IWASAKI 
3415d62ab2f4SMitsuru IWASAKI     /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3416d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_MUTEX",		ACPI_LV_MUTEX},
3417d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_THREADS",		ACPI_LV_THREADS},
3418d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_IO",		ACPI_LV_IO},
3419d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_INTERRUPTS",	ACPI_LV_INTERRUPTS},
3420d62ab2f4SMitsuru IWASAKI     {"ACPI_LV_VERBOSITY3",	ACPI_LV_VERBOSITY3},
3421d62ab2f4SMitsuru IWASAKI 
3422d62ab2f4SMitsuru IWASAKI     /* Exceptionally verbose output -- also used in the global "DebugLevel"  */
342398479b04SMitsuru IWASAKI     {"ACPI_LV_AML_DISASSEMBLE",	ACPI_LV_AML_DISASSEMBLE},
342498479b04SMitsuru IWASAKI     {"ACPI_LV_VERBOSE_INFO",	ACPI_LV_VERBOSE_INFO},
342598479b04SMitsuru IWASAKI     {"ACPI_LV_FULL_TABLES",	ACPI_LV_FULL_TABLES},
342698479b04SMitsuru IWASAKI     {"ACPI_LV_EVENTS",		ACPI_LV_EVENTS},
342798479b04SMitsuru IWASAKI     {"ACPI_LV_VERBOSE",		ACPI_LV_VERBOSE},
342815e32d5dSMike Smith     {NULL, 0}
342915e32d5dSMike Smith };
343015e32d5dSMike Smith 
343115e32d5dSMike Smith static void
343215e32d5dSMike Smith acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
343315e32d5dSMike Smith {
343415e32d5dSMike Smith     char	*ep;
343515e32d5dSMike Smith     int		i, l;
34360ae55423SMike Smith     int		set;
343715e32d5dSMike Smith 
343815e32d5dSMike Smith     while (*cp) {
343915e32d5dSMike Smith 	if (isspace(*cp)) {
344015e32d5dSMike Smith 	    cp++;
344115e32d5dSMike Smith 	    continue;
344215e32d5dSMike Smith 	}
344315e32d5dSMike Smith 	ep = cp;
344415e32d5dSMike Smith 	while (*ep && !isspace(*ep))
344515e32d5dSMike Smith 	    ep++;
34460ae55423SMike Smith 	if (*cp == '!') {
34470ae55423SMike Smith 	    set = 0;
34480ae55423SMike Smith 	    cp++;
34490ae55423SMike Smith 	    if (cp == ep)
34500ae55423SMike Smith 		continue;
34510ae55423SMike Smith 	} else {
34520ae55423SMike Smith 	    set = 1;
34530ae55423SMike Smith 	}
345415e32d5dSMike Smith 	l = ep - cp;
345515e32d5dSMike Smith 	for (i = 0; tag[i].name != NULL; i++) {
345615e32d5dSMike Smith 	    if (!strncmp(cp, tag[i].name, l)) {
3457be2b1797SNate Lawson 		if (set)
345815e32d5dSMike Smith 		    *flag |= tag[i].value;
3459be2b1797SNate Lawson 		else
34600ae55423SMike Smith 		    *flag &= ~tag[i].value;
346115e32d5dSMike Smith 	    }
346215e32d5dSMike Smith 	}
346315e32d5dSMike Smith 	cp = ep;
346415e32d5dSMike Smith     }
346515e32d5dSMike Smith }
346615e32d5dSMike Smith 
346715e32d5dSMike Smith static void
34682a4ac806SMike Smith acpi_set_debugging(void *junk)
346915e32d5dSMike Smith {
34707e639165SNate Lawson     char	*layer, *level;
347115e32d5dSMike Smith 
34721d7b121cSNate Lawson     if (cold) {
34730ae55423SMike Smith 	AcpiDbgLayer = 0;
34740ae55423SMike Smith 	AcpiDbgLevel = 0;
34751d7b121cSNate Lawson     }
34761d7b121cSNate Lawson 
34777e639165SNate Lawson     layer = getenv("debug.acpi.layer");
34787e639165SNate Lawson     level = getenv("debug.acpi.level");
34797e639165SNate Lawson     if (layer == NULL && level == NULL)
34807e639165SNate Lawson 	return;
34810ae55423SMike Smith 
34827e639165SNate Lawson     printf("ACPI set debug");
34837e639165SNate Lawson     if (layer != NULL) {
34847e639165SNate Lawson 	if (strcmp("NONE", layer) != 0)
34857e639165SNate Lawson 	    printf(" layer '%s'", layer);
34867e639165SNate Lawson 	acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
34877e639165SNate Lawson 	freeenv(layer);
34881d7b121cSNate Lawson     }
34897e639165SNate Lawson     if (level != NULL) {
34907e639165SNate Lawson 	if (strcmp("NONE", level) != 0)
34917e639165SNate Lawson 	    printf(" level '%s'", level);
34927e639165SNate Lawson 	acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
34937e639165SNate Lawson 	freeenv(level);
34947e639165SNate Lawson     }
34957e639165SNate Lawson     printf("\n");
349615e32d5dSMike Smith }
3497bee4aa4aSNate Lawson 
3498be2b1797SNate Lawson SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3499be2b1797SNate Lawson 	NULL);
35001d7b121cSNate Lawson 
35011d7b121cSNate Lawson static int
35021d7b121cSNate Lawson acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
35031d7b121cSNate Lawson {
350454f6bca0SNate Lawson     int		 error, *dbg;
35051d7b121cSNate Lawson     struct	 debugtag *tag;
350654f6bca0SNate Lawson     struct	 sbuf sb;
35071d7b121cSNate Lawson 
350854f6bca0SNate Lawson     if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
350954f6bca0SNate Lawson 	return (ENOMEM);
35101d7b121cSNate Lawson     if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
35111d7b121cSNate Lawson 	tag = &dbg_layer[0];
35121d7b121cSNate Lawson 	dbg = &AcpiDbgLayer;
35131d7b121cSNate Lawson     } else {
35141d7b121cSNate Lawson 	tag = &dbg_level[0];
35151d7b121cSNate Lawson 	dbg = &AcpiDbgLevel;
35161d7b121cSNate Lawson     }
35171d7b121cSNate Lawson 
35181d7b121cSNate Lawson     /* Get old values if this is a get request. */
351915e2f34fSNate Lawson     ACPI_SERIAL_BEGIN(acpi);
35201d7b121cSNate Lawson     if (*dbg == 0) {
352154f6bca0SNate Lawson 	sbuf_cpy(&sb, "NONE");
35221d7b121cSNate Lawson     } else if (req->newptr == NULL) {
35231d7b121cSNate Lawson 	for (; tag->name != NULL; tag++) {
352454f6bca0SNate Lawson 	    if ((*dbg & tag->value) == tag->value)
352554f6bca0SNate Lawson 		sbuf_printf(&sb, "%s ", tag->name);
35261d7b121cSNate Lawson 	}
35271d7b121cSNate Lawson     }
352854f6bca0SNate Lawson     sbuf_trim(&sb);
352954f6bca0SNate Lawson     sbuf_finish(&sb);
35301d7b121cSNate Lawson 
35317e639165SNate Lawson     /* Copy out the old values to the user. */
35327e639165SNate Lawson     error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
353354f6bca0SNate Lawson     sbuf_delete(&sb);
35341d7b121cSNate Lawson 
35351d7b121cSNate Lawson     /* If the user is setting a string, parse it. */
35361d7b121cSNate Lawson     if (error == 0 && req->newptr != NULL) {
35371d7b121cSNate Lawson 	*dbg = 0;
35381d7b121cSNate Lawson 	setenv((char *)oidp->oid_arg1, (char *)req->newptr);
35391d7b121cSNate Lawson 	acpi_set_debugging(NULL);
35401d7b121cSNate Lawson     }
354115e2f34fSNate Lawson     ACPI_SERIAL_END(acpi);
35421d7b121cSNate Lawson 
35431d7b121cSNate Lawson     return (error);
35441d7b121cSNate Lawson }
3545bee4aa4aSNate Lawson 
35461d7b121cSNate Lawson SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
35471d7b121cSNate Lawson 	    "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
35481d7b121cSNate Lawson SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
35491d7b121cSNate Lawson 	    "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3550bee4aa4aSNate Lawson #endif /* ACPI_DEBUG */
3551f9390180SMitsuru IWASAKI 
3552f9390180SMitsuru IWASAKI static int
3553f9390180SMitsuru IWASAKI acpi_pm_func(u_long cmd, void *arg, ...)
3554f9390180SMitsuru IWASAKI {
3555f9390180SMitsuru IWASAKI 	int	state, acpi_state;
3556f9390180SMitsuru IWASAKI 	int	error;
3557f9390180SMitsuru IWASAKI 	struct	acpi_softc *sc;
3558f9390180SMitsuru IWASAKI 	va_list	ap;
3559f9390180SMitsuru IWASAKI 
3560f9390180SMitsuru IWASAKI 	error = 0;
3561f9390180SMitsuru IWASAKI 	switch (cmd) {
3562f9390180SMitsuru IWASAKI 	case POWER_CMD_SUSPEND:
3563f9390180SMitsuru IWASAKI 		sc = (struct acpi_softc *)arg;
3564f9390180SMitsuru IWASAKI 		if (sc == NULL) {
3565f9390180SMitsuru IWASAKI 			error = EINVAL;
3566f9390180SMitsuru IWASAKI 			goto out;
3567f9390180SMitsuru IWASAKI 		}
3568f9390180SMitsuru IWASAKI 
3569f9390180SMitsuru IWASAKI 		va_start(ap, arg);
3570f9390180SMitsuru IWASAKI 		state = va_arg(ap, int);
3571f9390180SMitsuru IWASAKI 		va_end(ap);
3572f9390180SMitsuru IWASAKI 
3573f9390180SMitsuru IWASAKI 		switch (state) {
3574f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_STANDBY:
3575f9390180SMitsuru IWASAKI 			acpi_state = sc->acpi_standby_sx;
3576f9390180SMitsuru IWASAKI 			break;
3577f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_SUSPEND:
3578f9390180SMitsuru IWASAKI 			acpi_state = sc->acpi_suspend_sx;
3579f9390180SMitsuru IWASAKI 			break;
3580f9390180SMitsuru IWASAKI 		case POWER_SLEEP_STATE_HIBERNATE:
3581f9390180SMitsuru IWASAKI 			acpi_state = ACPI_STATE_S4;
3582f9390180SMitsuru IWASAKI 			break;
3583f9390180SMitsuru IWASAKI 		default:
3584f9390180SMitsuru IWASAKI 			error = EINVAL;
3585f9390180SMitsuru IWASAKI 			goto out;
3586f9390180SMitsuru IWASAKI 		}
3587f9390180SMitsuru IWASAKI 
358800a30448SNate Lawson 		if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
358900a30448SNate Lawson 			error = ENXIO;
3590f9390180SMitsuru IWASAKI 		break;
3591f9390180SMitsuru IWASAKI 	default:
3592f9390180SMitsuru IWASAKI 		error = EINVAL;
3593f9390180SMitsuru IWASAKI 		goto out;
3594f9390180SMitsuru IWASAKI 	}
3595f9390180SMitsuru IWASAKI 
3596f9390180SMitsuru IWASAKI out:
3597f9390180SMitsuru IWASAKI 	return (error);
3598f9390180SMitsuru IWASAKI }
3599f9390180SMitsuru IWASAKI 
3600f9390180SMitsuru IWASAKI static void
3601f9390180SMitsuru IWASAKI acpi_pm_register(void *arg)
3602f9390180SMitsuru IWASAKI {
3603be2b1797SNate Lawson     if (!cold || resource_disabled("acpi", 0))
36046c407052SMitsuru IWASAKI 	return;
3605f9390180SMitsuru IWASAKI 
3606f9390180SMitsuru IWASAKI     power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3607f9390180SMitsuru IWASAKI }
3608f9390180SMitsuru IWASAKI 
3609f9390180SMitsuru IWASAKI SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);
3610