/*- * Copyright (c) 2000 Takanori Watanabe * Copyright (c) 2000 Mitsuru IWASAKI * Copyright (c) 2000, 2001 Michael Smith * Copyright (c) 2000 BSDi * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #include "opt_acpi.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "acpi.h" #include #include #include MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices"); /* * Hooks for the ACPI CA debugging infrastructure */ #define _COMPONENT ACPI_BUS ACPI_MODULE_NAME("ACPI") /* * Character device */ static d_open_t acpiopen; static d_close_t acpiclose; static d_ioctl_t acpiioctl; #define CDEV_MAJOR 152 static struct cdevsw acpi_cdevsw = { .d_open = acpiopen, .d_close = acpiclose, .d_ioctl = acpiioctl, .d_name = "acpi", .d_maj = CDEV_MAJOR, }; static const char* sleep_state_names[] = { "S0", "S1", "S2", "S3", "S4", "S5", "NONE"}; /* this has to be static, as the softc is gone when we need it */ static int acpi_off_state = ACPI_STATE_S5; #if __FreeBSD_version >= 500000 struct mtx acpi_mutex; #endif static int acpi_modevent(struct module *mod, int event, void *junk); static void acpi_identify(driver_t *driver, device_t parent); static int acpi_probe(device_t dev); static int acpi_attach(device_t dev); static device_t acpi_add_child(device_t bus, int order, const char *name, int unit); static int acpi_print_child(device_t bus, device_t child); static int acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result); static int acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value); static int acpi_set_resource(device_t dev, device_t child, int type, int rid, u_long start, u_long count); static int acpi_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, u_long *countp); static struct resource *acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, u_long start, u_long end, u_long count, u_int flags); static int acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r); static u_int32_t acpi_isa_get_logicalid(device_t dev); static u_int32_t acpi_isa_get_compatid(device_t dev); static int acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids); static void acpi_probe_children(device_t bus); static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status); static void acpi_shutdown_pre_sync(void *arg, int howto); static void acpi_shutdown_final(void *arg, int howto); static void acpi_enable_fixed_events(struct acpi_softc *sc); static void acpi_system_eventhandler_sleep(void *arg, int state); static void acpi_system_eventhandler_wakeup(void *arg, int state); static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS); static int acpi_pm_func(u_long cmd, void *arg, ...); static device_method_t acpi_methods[] = { /* Device interface */ DEVMETHOD(device_identify, acpi_identify), DEVMETHOD(device_probe, acpi_probe), DEVMETHOD(device_attach, acpi_attach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, bus_generic_resume), /* Bus interface */ DEVMETHOD(bus_add_child, acpi_add_child), DEVMETHOD(bus_print_child, acpi_print_child), DEVMETHOD(bus_read_ivar, acpi_read_ivar), DEVMETHOD(bus_write_ivar, acpi_write_ivar), DEVMETHOD(bus_set_resource, acpi_set_resource), DEVMETHOD(bus_get_resource, acpi_get_resource), DEVMETHOD(bus_alloc_resource, acpi_alloc_resource), DEVMETHOD(bus_release_resource, acpi_release_resource), DEVMETHOD(bus_driver_added, bus_generic_driver_added), DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), /* ISA emulation */ DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe), {0, 0} }; static driver_t acpi_driver = { "acpi", acpi_methods, sizeof(struct acpi_softc), }; static devclass_t acpi_devclass; DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0); MODULE_VERSION(acpi, 100); SYSCTL_INT(_debug, OID_AUTO, acpi_debug_layer, CTLFLAG_RW, &AcpiDbgLayer, 0, ""); SYSCTL_INT(_debug, OID_AUTO, acpi_debug_level, CTLFLAG_RW, &AcpiDbgLevel, 0, ""); static int acpi_ca_version = ACPI_CA_VERSION; SYSCTL_INT(_debug, OID_AUTO, acpi_ca_version, CTLFLAG_RD, &acpi_ca_version, 0, ""); /* * ACPI can only be loaded as a module by the loader; activating it after * system bootstrap time is not useful, and can be fatal to the system. * It also cannot be unloaded, since the entire system bus heirarchy hangs off it. */ static int acpi_modevent(struct module *mod, int event, void *junk) { switch(event) { case MOD_LOAD: if (!cold) { printf("The ACPI driver cannot be loaded after boot.\n"); return(EPERM); } break; case MOD_UNLOAD: if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI) return(EBUSY); break; default: break; } return(0); } /* * Detect ACPI, perform early initialisation */ static void acpi_identify(driver_t *driver, device_t parent) { device_t child; int error; #ifdef ACPI_DEBUGGER char *debugpoint; #endif ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); if (!cold) return_VOID; /* * Check that we haven't been disabled with a hint. */ if (resource_disabled("acpi", 0)) return_VOID; /* * Make sure we're not being doubly invoked. */ if (device_find_child(parent, "acpi", 0) != NULL) return_VOID; #if __FreeBSD_version >= 500000 /* initialise the ACPI mutex */ mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF); #endif /* * Start up the ACPI CA subsystem. */ #ifdef ACPI_DEBUGGER debugpoint = getenv("debug.acpi.debugger"); if (debugpoint) { if (!strcmp(debugpoint, "init")) acpi_EnterDebugger(); freeenv(debugpoint); } #endif if (ACPI_FAILURE(error = AcpiInitializeSubsystem())) { printf("ACPI: initialisation failed: %s\n", AcpiFormatException(error)); return_VOID; } #ifdef ACPI_DEBUGGER debugpoint = getenv("debug.acpi.debugger"); if (debugpoint) { if (!strcmp(debugpoint, "tables")) acpi_EnterDebugger(); freeenv(debugpoint); } #endif if (ACPI_FAILURE(error = AcpiLoadTables())) { printf("ACPI: table load failed: %s\n", AcpiFormatException(error)); return_VOID; } /* * Attach the actual ACPI device. */ if ((child = BUS_ADD_CHILD(parent, 0, "acpi", 0)) == NULL) { device_printf(parent, "ACPI: could not attach\n"); return_VOID; } } /* * Fetch some descriptive data from ACPI to put in our attach message */ static int acpi_probe(device_t dev) { ACPI_TABLE_HEADER th; char buf[20]; ACPI_STATUS status; int error; ACPI_LOCK_DECL; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); if (power_pm_get_type() != POWER_PM_TYPE_NONE && power_pm_get_type() != POWER_PM_TYPE_ACPI) { device_printf(dev, "Other PM system enabled.\n"); return_VALUE(ENXIO); } ACPI_LOCK; if (ACPI_FAILURE(status = AcpiGetTableHeader(ACPI_TABLE_XSDT, 1, &th))) { device_printf(dev, "couldn't get XSDT header: %s\n", AcpiFormatException(status)); error = ENXIO; } else { sprintf(buf, "%.6s %.8s", th.OemId, th.OemTableId); device_set_desc_copy(dev, buf); error = 0; } ACPI_UNLOCK; return_VALUE(error); } static int acpi_attach(device_t dev) { struct acpi_softc *sc; ACPI_STATUS status; int error; UINT32 flags; char *env; #ifdef ACPI_DEBUGGER char *debugpoint; #endif ACPI_LOCK_DECL; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); ACPI_LOCK; sc = device_get_softc(dev); bzero(sc, sizeof(*sc)); sc->acpi_dev = dev; #ifdef ACPI_DEBUGGER debugpoint = getenv("debug.acpi.debugger"); if (debugpoint) { if (!strcmp(debugpoint, "spaces")) acpi_EnterDebugger(); freeenv(debugpoint); } #endif /* * Install the default address space handlers. */ error = ENXIO; if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL))) { device_printf(dev, "could not initialise SystemMemory handler: %s\n", AcpiFormatException(status)); goto out; } if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL))) { device_printf(dev, "could not initialise SystemIO handler: %s\n", AcpiFormatException(status)); goto out; } if (ACPI_FAILURE(status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL))) { device_printf(dev, "could not initialise PciConfig handler: %s\n", AcpiFormatException(status)); goto out; } /* * Bring ACPI fully online. * * Note that some systems (specifically, those with namespace evaluation issues * that require the avoidance of parts of the namespace) must avoid running _INI * and _STA on everything, as well as dodging the final object init pass. * * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT). * * XXX We should arrange for the object init pass after we have attached all our * child devices, but on many systems it works here. */ #ifdef ACPI_DEBUGGER debugpoint = getenv("debug.acpi.debugger"); if (debugpoint) { if (!strcmp(debugpoint, "enable")) acpi_EnterDebugger(); freeenv(debugpoint); } #endif flags = 0; if (testenv("debug.acpi.avoid")) flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) { device_printf(dev, "could not enable ACPI: %s\n", AcpiFormatException(status)); goto out; } if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) { device_printf(dev, "could not initialize ACPI objects: %s\n", AcpiFormatException(status)); goto out; } /* * Setup our sysctl tree. * * XXX: This doesn't check to make sure that none of these fail. */ sysctl_ctx_init(&sc->acpi_sysctl_ctx); sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx, SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, device_get_name(dev), CTLFLAG_RD, 0, ""); SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD, 0, 0, acpi_supported_sleep_state_sysctl, "A", ""); SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW, &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", ""); SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW, &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", ""); SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW, &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", ""); SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW, &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", ""); SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW, &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", ""); SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, "sleep_delay", CTLFLAG_RD | CTLFLAG_RW, &sc->acpi_sleep_delay, 0, "sleep delay"); SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, "s4bios", CTLFLAG_RD | CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode"); SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, "verbose", CTLFLAG_RD | CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode"); SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, "disable_on_poweroff", CTLFLAG_RD | CTLFLAG_RW, &sc->acpi_disable_on_poweroff, 0, "ACPI subsystem disable on poweroff"); sc->acpi_disable_on_poweroff = 1; sc->acpi_sleep_delay = 0; sc->acpi_s4bios = 1; if (bootverbose) sc->acpi_verbose = 1; if ((env = getenv("hw.acpi.verbose")) && strcmp(env, "0")) { sc->acpi_verbose = 1; freeenv(env); } /* * Dispatch the default sleep state to devices. * TBD: should be configured from userland policy manager. */ sc->acpi_power_button_sx = ACPI_POWER_BUTTON_DEFAULT_SX; sc->acpi_sleep_button_sx = ACPI_SLEEP_BUTTON_DEFAULT_SX; sc->acpi_lid_switch_sx = ACPI_LID_SWITCH_DEFAULT_SX; sc->acpi_standby_sx = ACPI_STATE_S1; sc->acpi_suspend_sx = ACPI_STATE_S3; acpi_enable_fixed_events(sc); /* * Scan the namespace and attach/initialise children. */ #ifdef ACPI_DEBUGGER debugpoint = getenv("debug.acpi.debugger"); if (debugpoint) { if (!strcmp(debugpoint, "probe")) acpi_EnterDebugger(); freeenv(debugpoint); } #endif /* * Register our shutdown handlers */ EVENTHANDLER_REGISTER(shutdown_pre_sync, acpi_shutdown_pre_sync, sc, SHUTDOWN_PRI_LAST); EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc, SHUTDOWN_PRI_LAST); /* * Register our acpi event handlers. * XXX should be configurable eg. via userland policy manager. */ EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep, sc, ACPI_EVENT_PRI_LAST); EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup, sc, ACPI_EVENT_PRI_LAST); /* * Flag our initial states. */ sc->acpi_enabled = 1; sc->acpi_sstate = ACPI_STATE_S0; sc->acpi_sleep_disabled = 0; /* * Create the control device */ sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644, "acpi"); sc->acpi_dev_t->si_drv1 = sc; #ifdef ACPI_DEBUGGER debugpoint = getenv("debug.acpi.debugger"); if (debugpoint) { if (!strcmp(debugpoint, "running")) acpi_EnterDebugger(); freeenv(debugpoint); } #endif #ifdef ACPI_USE_THREADS if ((error = acpi_task_thread_init())) { goto out; } #endif if ((error = acpi_machdep_init(dev))) { goto out; } /* Register ACPI again to pass the correct argument of pm_func. */ power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc); if (!acpi_disabled("bus")) acpi_probe_children(dev); error = 0; out: ACPI_UNLOCK; return_VALUE(error); } /* * Handle a new device being added */ static device_t acpi_add_child(device_t bus, int order, const char *name, int unit) { struct acpi_device *ad; device_t child; if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT)) == NULL) return(NULL); bzero(ad, sizeof(*ad)); resource_list_init(&ad->ad_rl); child = device_add_child_ordered(bus, order, name, unit); if (child != NULL) device_set_ivars(child, ad); return(child); } static int acpi_print_child(device_t bus, device_t child) { struct acpi_device *adev = device_get_ivars(child); struct resource_list *rl = &adev->ad_rl; int retval = 0; retval += bus_print_child_header(bus, child); retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx"); retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx"); retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld"); retval += bus_print_child_footer(bus, child); return(retval); } /* * Handle per-device ivars */ static int acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) { struct acpi_device *ad; if ((ad = device_get_ivars(child)) == NULL) { printf("device has no ivars\n"); return(ENOENT); } switch(index) { /* ACPI ivars */ case ACPI_IVAR_HANDLE: *(ACPI_HANDLE *)result = ad->ad_handle; break; case ACPI_IVAR_MAGIC: *(int *)result = ad->ad_magic; break; case ACPI_IVAR_PRIVATE: *(void **)result = ad->ad_private; break; /* ISA compatibility */ case ISA_IVAR_VENDORID: case ISA_IVAR_SERIAL: case ISA_IVAR_COMPATID: *(int *)result = -1; break; case ISA_IVAR_LOGICALID: *(int *)result = acpi_isa_get_logicalid(child); break; default: return(ENOENT); } return(0); } static int acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value) { struct acpi_device *ad; if ((ad = device_get_ivars(child)) == NULL) { printf("device has no ivars\n"); return(ENOENT); } switch(index) { /* ACPI ivars */ case ACPI_IVAR_HANDLE: ad->ad_handle = (ACPI_HANDLE)value; break; case ACPI_IVAR_MAGIC: ad->ad_magic = (int )value; break; case ACPI_IVAR_PRIVATE: ad->ad_private = (void *)value; break; default: panic("bad ivar write request (%d)", index); return(ENOENT); } return(0); } /* * Handle child resource allocation/removal */ static int acpi_set_resource(device_t dev, device_t child, int type, int rid, u_long start, u_long count) { struct acpi_device *ad = device_get_ivars(child); struct resource_list *rl = &ad->ad_rl; resource_list_add(rl, type, rid, start, start + count -1, count); return(0); } static int acpi_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, u_long *countp) { struct acpi_device *ad = device_get_ivars(child); struct resource_list *rl = &ad->ad_rl; struct resource_list_entry *rle; rle = resource_list_find(rl, type, rid); if (!rle) return(ENOENT); if (startp) *startp = rle->start; if (countp) *countp = rle->count; return(0); } static struct resource * acpi_alloc_resource(device_t bus, device_t child, int type, int *rid, u_long start, u_long end, u_long count, u_int flags) { struct acpi_device *ad = device_get_ivars(child); struct resource_list *rl = &ad->ad_rl; return(resource_list_alloc(rl, bus, child, type, rid, start, end, count, flags)); } static int acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r) { struct acpi_device *ad = device_get_ivars(child); struct resource_list *rl = &ad->ad_rl; return(resource_list_release(rl, bus, child, type, rid, r)); } /* * Handle ISA-like devices probing for a PnP ID to match. */ #define PNP_EISAID(s) \ ((((s[0] - '@') & 0x1f) << 2) \ | (((s[1] - '@') & 0x18) >> 3) \ | (((s[1] - '@') & 0x07) << 13) \ | (((s[2] - '@') & 0x1f) << 8) \ | (PNP_HEXTONUM(s[4]) << 16) \ | (PNP_HEXTONUM(s[3]) << 20) \ | (PNP_HEXTONUM(s[6]) << 24) \ | (PNP_HEXTONUM(s[5]) << 28)) static u_int32_t acpi_isa_get_logicalid(device_t dev) { ACPI_HANDLE h; ACPI_DEVICE_INFO devinfo; ACPI_STATUS error; u_int32_t pnpid; ACPI_LOCK_DECL; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); pnpid = 0; ACPI_LOCK; /* fetch and validate the HID */ if ((h = acpi_get_handle(dev)) == NULL) goto out; if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) goto out; if (!(devinfo.Valid & ACPI_VALID_HID)) goto out; pnpid = PNP_EISAID(devinfo.HardwareId); out: ACPI_UNLOCK; return_VALUE(pnpid); } static u_int32_t acpi_isa_get_compatid(device_t dev) { ACPI_HANDLE h; ACPI_DEVICE_INFO devinfo; ACPI_STATUS error; u_int32_t pnpid; ACPI_LOCK_DECL; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); pnpid = 0; ACPI_LOCK; /* fetch and validate the HID */ if ((h = acpi_get_handle(dev)) == NULL) goto out; if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) goto out; if (ACPI_FAILURE(error = acpi_EvaluateInteger(h, "_CID", &pnpid))) goto out; out: ACPI_UNLOCK; return_VALUE(pnpid); } static int acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids) { int result; u_int32_t lid, cid; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); /* * ISA-style drivers attached to ACPI may persist and * probe manually if we return ENOENT. We never want * that to happen, so don't ever return it. */ result = ENXIO; /* scan the supplied IDs for a match */ lid = acpi_isa_get_logicalid(child); cid = acpi_isa_get_compatid(child); while (ids && ids->ip_id) { if (lid == ids->ip_id || cid == ids->ip_id) { result = 0; goto out; } ids++; } out: return_VALUE(result); } /* * Scan relevant portions of the ACPI namespace and attach child devices. * * Note that we only expect to find devices in the \_PR_, \_TZ_, \_SI_ and \_SB_ scopes, * and \_PR_ and \_TZ_ become obsolete in the ACPI 2.0 spec. */ static void acpi_probe_children(device_t bus) { ACPI_HANDLE parent; static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI", "\\_SB_", NULL}; int i; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); ACPI_ASSERTLOCK; /* * Create any static children by calling device identify methods. */ ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n")); bus_generic_probe(bus); /* * Scan the namespace and insert placeholders for all the devices that * we find. * * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because * we want to create nodes for all devices, not just those that are currently * present. (This assumes that we don't want to create/remove devices as they * appear, which might be smarter.) */ ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n")); for (i = 0; scopes[i] != NULL; i++) if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], &parent))) AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, acpi_probe_child, bus, NULL); /* * Scan all of the child devices we have created and let them probe/attach. */ ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n")); bus_generic_attach(bus); /* * Some of these children may have attached others as part of their attach * process (eg. the root PCI bus driver), so rescan. */ ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n")); bus_generic_attach(bus); ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n")); return_VOID; } /* * Evaluate a child device and determine whether we might attach a device to * it. */ static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status) { ACPI_OBJECT_TYPE type; device_t child, bus = (device_t)context; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); /* * Skip this device if we think we'll have trouble with it. */ if (acpi_avoid(handle)) return_ACPI_STATUS(AE_OK); if (ACPI_SUCCESS(AcpiGetType(handle, &type))) { switch(type) { case ACPI_TYPE_DEVICE: case ACPI_TYPE_PROCESSOR: case ACPI_TYPE_THERMAL: case ACPI_TYPE_POWER: if (acpi_disabled("children")) break; /* * Create a placeholder device for this node. Sort the placeholder * so that the probe/attach passes will run breadth-first. */ ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", acpi_name(handle))); child = BUS_ADD_CHILD(bus, level * 10, NULL, -1); if (child == NULL) break; acpi_set_handle(child, handle); /* * Check that the device is present. If it's not present, * leave it disabled (so that we have a device_t attached to * the handle, but we don't probe it). */ if ((type == ACPI_TYPE_DEVICE) && (!acpi_DeviceIsPresent(child))) { device_disable(child); break; } /* * Get the device's resource settings and attach them. * Note that if the device has _PRS but no _CRS, we need * to decide when it's appropriate to try to configure the * device. Ignore the return value here; it's OK for the * device not to have any resources. */ acpi_parse_resources(child, handle, &acpi_res_parse_set); /* if we're debugging, probe/attach now rather than later */ ACPI_DEBUG_EXEC(device_probe_and_attach(child)); break; } } return_ACPI_STATUS(AE_OK); } static void acpi_shutdown_pre_sync(void *arg, int howto) { struct acpi_softc *sc = arg; ACPI_ASSERTLOCK; /* * Disable all ACPI events before soft off, otherwise the system * will be turned on again on some laptops. * * XXX this should probably be restricted to masking some events just * before powering down, since we may still need ACPI during the * shutdown process. */ if (sc->acpi_disable_on_poweroff) acpi_Disable(sc); } static void acpi_shutdown_final(void *arg, int howto) { ACPI_STATUS status; ACPI_ASSERTLOCK; if (howto & RB_POWEROFF) { printf("Power system off using ACPI...\n"); if (ACPI_FAILURE(status = AcpiEnterSleepStatePrep(acpi_off_state))) { printf("AcpiEnterSleepStatePrep failed - %s\n", AcpiFormatException(status)); return; } if (ACPI_FAILURE(status = AcpiEnterSleepState(acpi_off_state))) { printf("ACPI power-off failed - %s\n", AcpiFormatException(status)); } else { DELAY(1000000); printf("ACPI power-off failed - timeout\n"); } } else { printf("Terminate ACPI\n"); AcpiTerminate(); } } static void acpi_enable_fixed_events(struct acpi_softc *sc) { static int first_time = 1; #define MSGFORMAT "%s button is handled as a fixed feature programming model.\n" ACPI_ASSERTLOCK; /* Enable and clear fixed events and install handlers. */ if ((AcpiGbl_FADT != NULL) && (AcpiGbl_FADT->PwrButton == 0)) { AcpiEnableEvent(ACPI_EVENT_POWER_BUTTON, ACPI_EVENT_FIXED, 0); AcpiClearEvent(ACPI_EVENT_POWER_BUTTON, ACPI_EVENT_FIXED); AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON, acpi_eventhandler_power_button_for_sleep, sc); if (first_time) { device_printf(sc->acpi_dev, MSGFORMAT, "power"); } } if ((AcpiGbl_FADT != NULL) && (AcpiGbl_FADT->SleepButton == 0)) { AcpiEnableEvent(ACPI_EVENT_SLEEP_BUTTON, ACPI_EVENT_FIXED, 0); AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON, ACPI_EVENT_FIXED); AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON, acpi_eventhandler_sleep_button_for_sleep, sc); if (first_time) { device_printf(sc->acpi_dev, MSGFORMAT, "sleep"); } } first_time = 0; } /* * Returns true if the device is actually present and should * be attached to. This requires the present, enabled, UI-visible * and diagnostics-passed bits to be set. */ BOOLEAN acpi_DeviceIsPresent(device_t dev) { ACPI_HANDLE h; ACPI_DEVICE_INFO devinfo; ACPI_STATUS error; ACPI_ASSERTLOCK; if ((h = acpi_get_handle(dev)) == NULL) return(FALSE); if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) return(FALSE); /* if no _STA method, must be present */ if (!(devinfo.Valid & ACPI_VALID_STA)) return(TRUE); /* return true for 'present' and 'functioning' */ if ((devinfo.CurrentStatus & 0x9) == 0x9) return(TRUE); return(FALSE); } /* * Returns true if the battery is actually present and inserted. */ BOOLEAN acpi_BatteryIsPresent(device_t dev) { ACPI_HANDLE h; ACPI_DEVICE_INFO devinfo; ACPI_STATUS error; ACPI_ASSERTLOCK; if ((h = acpi_get_handle(dev)) == NULL) return(FALSE); if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) return(FALSE); /* if no _STA method, must be present */ if (!(devinfo.Valid & ACPI_VALID_STA)) return(TRUE); /* return true for 'present' and 'functioning' */ if ((devinfo.CurrentStatus & 0x19) == 0x19) return(TRUE); return(FALSE); } /* * Match a HID string against a device */ BOOLEAN acpi_MatchHid(device_t dev, char *hid) { ACPI_HANDLE h; ACPI_DEVICE_INFO devinfo; ACPI_STATUS error; int cid; ACPI_ASSERTLOCK; if (hid == NULL) return(FALSE); if ((h = acpi_get_handle(dev)) == NULL) return(FALSE); if (ACPI_FAILURE(error = AcpiGetObjectInfo(h, &devinfo))) return(FALSE); if ((devinfo.Valid & ACPI_VALID_HID) && !strcmp(hid, devinfo.HardwareId)) return(TRUE); if (ACPI_FAILURE(error = acpi_EvaluateInteger(h, "_CID", &cid))) return(FALSE); if (cid == PNP_EISAID(hid)) return(TRUE); return(FALSE); } /* * Return the handle of a named object within our scope, ie. that of (parent) * or one if its parents. */ ACPI_STATUS acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result) { ACPI_HANDLE r; ACPI_STATUS status; ACPI_ASSERTLOCK; /* walk back up the tree to the root */ for (;;) { if (ACPI_SUCCESS(status = AcpiGetHandle(parent, path, &r))) { *result = r; return(AE_OK); } if (status != AE_NOT_FOUND) return(AE_OK); if (ACPI_FAILURE(AcpiGetParent(parent, &r))) return(AE_NOT_FOUND); parent = r; } } /* * Allocate a buffer with a preset data size. */ ACPI_BUFFER * acpi_AllocBuffer(int size) { ACPI_BUFFER *buf; if ((buf = malloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL) return(NULL); buf->Length = size; buf->Pointer = (void *)(buf + 1); return(buf); } /* * Evaluate a path that should return an integer. */ ACPI_STATUS acpi_EvaluateInteger(ACPI_HANDLE handle, char *path, int *number) { ACPI_STATUS error; ACPI_BUFFER buf; ACPI_OBJECT param; ACPI_ASSERTLOCK; if (handle == NULL) handle = ACPI_ROOT_OBJECT; /* * Assume that what we've been pointed at is an Integer object, or * a method that will return an Integer. */ buf.Pointer = ¶m; buf.Length = sizeof(param); if (ACPI_SUCCESS(error = AcpiEvaluateObject(handle, path, NULL, &buf))) { if (param.Type == ACPI_TYPE_INTEGER) { *number = param.Integer.Value; } else { error = AE_TYPE; } } /* * In some applications, a method that's expected to return an Integer * may instead return a Buffer (probably to simplify some internal * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer, * convert it into an Integer as best we can. * * This is a hack. */ if (error == AE_BUFFER_OVERFLOW) { if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) { error = AE_NO_MEMORY; } else { if (ACPI_SUCCESS(error = AcpiEvaluateObject(handle, path, NULL, &buf))) { error = acpi_ConvertBufferToInteger(&buf, number); } } AcpiOsFree(buf.Pointer); } return(error); } ACPI_STATUS acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, int *number) { ACPI_OBJECT *p; int i; p = (ACPI_OBJECT *)bufp->Pointer; if (p->Type == ACPI_TYPE_INTEGER) { *number = p->Integer.Value; return(AE_OK); } if (p->Type != ACPI_TYPE_BUFFER) return(AE_TYPE); if (p->Buffer.Length > sizeof(int)) return(AE_BAD_DATA); *number = 0; for (i = 0; i < p->Buffer.Length; i++) *number += (*(p->Buffer.Pointer + i) << (i * 8)); return(AE_OK); } /* * Iterate over the elements of an a package object, calling the supplied * function for each element. * * XXX possible enhancement might be to abort traversal on error. */ ACPI_STATUS acpi_ForeachPackageObject(ACPI_OBJECT *pkg, void (* func)(ACPI_OBJECT *comp, void *arg), void *arg) { ACPI_OBJECT *comp; int i; if ((pkg == NULL) || (pkg->Type != ACPI_TYPE_PACKAGE)) return(AE_BAD_PARAMETER); /* iterate over components */ for (i = 0, comp = pkg->Package.Elements; i < pkg->Package.Count; i++, comp++) func(comp, arg); return(AE_OK); } /* * Find the (index)th resource object in a set. */ ACPI_STATUS acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp) { ACPI_RESOURCE *rp; int i; rp = (ACPI_RESOURCE *)buf->Pointer; i = index; while (i-- > 0) { /* range check */ if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) return(AE_BAD_PARAMETER); /* check for terminator */ if ((rp->Id == ACPI_RSTYPE_END_TAG) || (rp->Length == 0)) return(AE_NOT_FOUND); rp = ACPI_RESOURCE_NEXT(rp); } if (resp != NULL) *resp = rp; return(AE_OK); } /* * Append an ACPI_RESOURCE to an ACPI_BUFFER. * * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible * backing block. If the ACPI_RESOURCE is NULL, return an empty set of * resources. */ #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512 ACPI_STATUS acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res) { ACPI_RESOURCE *rp; void *newp; /* * Initialise the buffer if necessary. */ if (buf->Pointer == NULL) { buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE; if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL) return(AE_NO_MEMORY); rp = (ACPI_RESOURCE *)buf->Pointer; rp->Id = ACPI_RSTYPE_END_TAG; rp->Length = 0; } if (res == NULL) return(AE_OK); /* * Scan the current buffer looking for the terminator. * This will either find the terminator or hit the end * of the buffer and return an error. */ rp = (ACPI_RESOURCE *)buf->Pointer; for (;;) { /* range check, don't go outside the buffer */ if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length)) return(AE_BAD_PARAMETER); if ((rp->Id == ACPI_RSTYPE_END_TAG) || (rp->Length == 0)) { break; } rp = ACPI_RESOURCE_NEXT(rp); } /* * Check the size of the buffer and expand if required. * * Required size is: * size of existing resources before terminator + * size of new resource and header + * size of terminator. * * Note that this loop should really only run once, unless * for some reason we are stuffing a *really* huge resource. */ while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) + res->Length + ACPI_RESOURCE_LENGTH_NO_DATA + ACPI_RESOURCE_LENGTH) >= buf->Length) { if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL) return(AE_NO_MEMORY); bcopy(buf->Pointer, newp, buf->Length); rp = (ACPI_RESOURCE *)((u_int8_t *)newp + ((u_int8_t *)rp - (u_int8_t *)buf->Pointer)); AcpiOsFree(buf->Pointer); buf->Pointer = newp; buf->Length += buf->Length; } /* * Insert the new resource. */ bcopy(res, rp, res->Length + ACPI_RESOURCE_LENGTH_NO_DATA); /* * And add the terminator. */ rp = ACPI_RESOURCE_NEXT(rp); rp->Id = ACPI_RSTYPE_END_TAG; rp->Length = 0; return(AE_OK); } /* * Set interrupt model. */ ACPI_STATUS acpi_SetIntrModel(int model) { ACPI_OBJECT_LIST ArgList; ACPI_OBJECT Arg; Arg.Type = ACPI_TYPE_INTEGER; Arg.Integer.Value = model; ArgList.Count = 1; ArgList.Pointer = &Arg; return (AcpiEvaluateObject(ACPI_ROOT_OBJECT, "_PIC", &ArgList, NULL)); } #define ACPI_MINIMUM_AWAKETIME 5 static void acpi_sleep_enable(void *arg) { ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0; } /* * Set the system sleep state * * Currently we only support S1 and S5 */ ACPI_STATUS acpi_SetSleepState(struct acpi_softc *sc, int state) { ACPI_STATUS status = AE_OK; UINT8 TypeA; UINT8 TypeB; ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); ACPI_ASSERTLOCK; if (sc->acpi_sstate != ACPI_STATE_S0) return_ACPI_STATUS(AE_BAD_PARAMETER); /* avoid reentry */ if (sc->acpi_sleep_disabled) return_ACPI_STATUS(AE_OK); switch (state) { case ACPI_STATE_S0: /* XXX only for testing */ if (ACPI_FAILURE(status = AcpiEnterSleepState((UINT8)state))) { device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", AcpiFormatException(status)); } break; case ACPI_STATE_S1: case ACPI_STATE_S2: case ACPI_STATE_S3: case ACPI_STATE_S4: if (ACPI_FAILURE(status = AcpiGetSleepTypeData((UINT8)state, &TypeA, &TypeB))) { device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n", AcpiFormatException(status)); break; } sc->acpi_sstate = state; sc->acpi_sleep_disabled = 1; /* * Inform all devices that we are going to sleep. */ if (DEVICE_SUSPEND(root_bus) != 0) { /* * Re-wake the system. * * XXX note that a better two-pass approach with a 'veto' pass * followed by a "real thing" pass would be better, but the * current bus interface does not provide for this. */ DEVICE_RESUME(root_bus); return_ACPI_STATUS(AE_ERROR); } if (ACPI_FAILURE(status = AcpiEnterSleepStatePrep(state))) { device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n", AcpiFormatException(status)); break; } if (sc->acpi_sleep_delay > 0) { DELAY(sc->acpi_sleep_delay * 1000000); } if (state != ACPI_STATE_S1) { acpi_sleep_machdep(sc, state); /* AcpiEnterSleepState() maybe incompleted, unlock here if locked. */ if (AcpiGbl_AcpiMutexInfo[ACPI_MTX_HARDWARE].OwnerId != ACPI_MUTEX_NOT_ACQUIRED) { AcpiUtReleaseMutex(ACPI_MTX_HARDWARE); } /* Re-enable ACPI hardware on wakeup from sleep state 4. */ if (state == ACPI_STATE_S4) { AcpiEnable(); } } else { if (ACPI_FAILURE(status = AcpiEnterSleepState((UINT8)state))) { device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", AcpiFormatException(status)); break; } } AcpiLeaveSleepState((UINT8)state); DEVICE_RESUME(root_bus); sc->acpi_sstate = ACPI_STATE_S0; acpi_enable_fixed_events(sc); break; case ACPI_STATE_S5: /* * Shut down cleanly and power off. This will call us back through the * shutdown handlers. */ shutdown_nice(RB_POWEROFF); break; default: status = AE_BAD_PARAMETER; break; } if (sc->acpi_sleep_disabled) timeout(acpi_sleep_enable, (caddr_t)sc, hz * ACPI_MINIMUM_AWAKETIME); return_ACPI_STATUS(status); } /* * Enable/Disable ACPI */ ACPI_STATUS acpi_Enable(struct acpi_softc *sc) { ACPI_STATUS status; u_int32_t flags; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); ACPI_ASSERTLOCK; flags = ACPI_NO_ADDRESS_SPACE_INIT | ACPI_NO_HARDWARE_INIT | ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT; if (!sc->acpi_enabled) { status = AcpiEnableSubsystem(flags); } else { status = AE_OK; } if (status == AE_OK) sc->acpi_enabled = 1; return_ACPI_STATUS(status); } ACPI_STATUS acpi_Disable(struct acpi_softc *sc) { ACPI_STATUS status; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); ACPI_ASSERTLOCK; if (sc->acpi_enabled) { status = AcpiDisable(); } else { status = AE_OK; } if (status == AE_OK) sc->acpi_enabled = 0; return_ACPI_STATUS(status); } /* * ACPI Event Handlers */ /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */ static void acpi_system_eventhandler_sleep(void *arg, int state) { ACPI_LOCK_DECL; ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); ACPI_LOCK; if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) acpi_SetSleepState((struct acpi_softc *)arg, state); ACPI_UNLOCK; return_VOID; } static void acpi_system_eventhandler_wakeup(void *arg, int state) { ACPI_LOCK_DECL; ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state); /* Well, what to do? :-) */ ACPI_LOCK; ACPI_UNLOCK; return_VOID; } /* * ACPICA Event Handlers (FixedEvent, also called from button notify handler) */ UINT32 acpi_eventhandler_power_button_for_sleep(void *context) { struct acpi_softc *sc = (struct acpi_softc *)context; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx); return_VALUE(ACPI_INTERRUPT_HANDLED); } UINT32 acpi_eventhandler_power_button_for_wakeup(void *context) { struct acpi_softc *sc = (struct acpi_softc *)context; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx); return_VALUE(ACPI_INTERRUPT_HANDLED); } UINT32 acpi_eventhandler_sleep_button_for_sleep(void *context) { struct acpi_softc *sc = (struct acpi_softc *)context; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx); return_VALUE(ACPI_INTERRUPT_HANDLED); } UINT32 acpi_eventhandler_sleep_button_for_wakeup(void *context) { struct acpi_softc *sc = (struct acpi_softc *)context; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx); return_VALUE(ACPI_INTERRUPT_HANDLED); } /* * XXX This is kinda ugly, and should not be here. */ struct acpi_staticbuf { ACPI_BUFFER buffer; char data[512]; }; char * acpi_name(ACPI_HANDLE handle) { static struct acpi_staticbuf buf; ACPI_ASSERTLOCK; buf.buffer.Length = 512; buf.buffer.Pointer = &buf.data[0]; if (ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf.buffer))) return(buf.buffer.Pointer); return("(unknown path)"); } /* * Debugging/bug-avoidance. Avoid trying to fetch info on various * parts of the namespace. */ int acpi_avoid(ACPI_HANDLE handle) { char *cp, *env, *np; int len; np = acpi_name(handle); if (*np == '\\') np++; if ((env = getenv("debug.acpi.avoid")) == NULL) return(0); /* scan the avoid list checking for a match */ cp = env; for (;;) { while ((*cp != 0) && isspace(*cp)) cp++; if (*cp == 0) break; len = 0; while ((cp[len] != 0) && !isspace(cp[len])) len++; if (!strncmp(cp, np, len)) { freeenv(env); return(1); } cp += len; } freeenv(env); return(0); } /* * Debugging/bug-avoidance. Disable ACPI subsystem components. */ int acpi_disabled(char *subsys) { char *cp, *env; int len; if ((env = getenv("debug.acpi.disable")) == NULL) return(0); if (!strcmp(env, "all")) { freeenv(env); return(1); } /* scan the disable list checking for a match */ cp = env; for (;;) { while ((*cp != 0) && isspace(*cp)) cp++; if (*cp == 0) break; len = 0; while ((cp[len] != 0) && !isspace(cp[len])) len++; if (!strncmp(cp, subsys, len)) { freeenv(env); return(1); } cp += len; } freeenv(env); return(0); } /* * Device wake capability enable/disable. */ void acpi_device_enable_wake_capability(ACPI_HANDLE h, int enable) { ACPI_OBJECT_LIST ArgList; ACPI_OBJECT Arg; /* * TBD: All Power Resources referenced by elements 2 through N * of the _PRW object are put into the ON state. */ /* * enable/disable device wake function. */ ArgList.Count = 1; ArgList.Pointer = &Arg; Arg.Type = ACPI_TYPE_INTEGER; Arg.Integer.Value = enable; (void)AcpiEvaluateObject(h, "_PSW", &ArgList, NULL); } void acpi_device_enable_wake_event(ACPI_HANDLE h) { struct acpi_softc *sc; ACPI_STATUS status; ACPI_BUFFER prw_buffer; ACPI_OBJECT *res; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); if ((sc = devclass_get_softc(acpi_devclass, 0)) == NULL) { return; } /* * _PRW object is only required for devices that have the ability * to wake the system from a system sleeping state. */ prw_buffer.Length = ACPI_ALLOCATE_BUFFER; status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer); if (ACPI_FAILURE(status)) { return; } res = (ACPI_OBJECT *)prw_buffer.Pointer; if (res == NULL) { return; } if ((res->Type != ACPI_TYPE_PACKAGE) || (res->Package.Count < 2)) { goto out; } /* * The element 1 of the _PRW object: * The lowest power system sleeping state that can be entered * while still providing wake functionality. * The sleeping state being entered must be greater or equal to * the power state declared in element 1 of the _PRW object. */ if (res->Package.Elements[1].Type != ACPI_TYPE_INTEGER) { goto out; } if (sc->acpi_sstate > res->Package.Elements[1].Integer.Value) { goto out; } /* * The element 0 of the _PRW object: */ switch(res->Package.Elements[0].Type) { case ACPI_TYPE_INTEGER: /* * If the data type of this package element is numeric, then this * _PRW package element is the bit index in the GPEx_EN, in the * GPE blocks described in the FADT, of the enable bit that is * enabled for the wake event. */ status = AcpiEnableEvent(res->Package.Elements[0].Integer.Value, ACPI_EVENT_GPE, ACPI_EVENT_WAKE_ENABLE); if (ACPI_FAILURE(status)) printf("%s: EnableEvent Failed\n", __func__); break; case ACPI_TYPE_PACKAGE: /* XXX TBD */ /* * If the data type of this package element is a package, then this * _PRW package element is itself a package containing two * elements. The first is an object reference to the GPE Block * device that contains the GPE that will be triggered by the wake * event. The second element is numeric and it contains the bit * index in the GPEx_EN, in the GPE Block referenced by the * first element in the package, of the enable bit that is enabled for * the wake event. * For example, if this field is a package then it is of the form: * Package() {\_SB.PCI0.ISA.GPE, 2} */ break; default: break; } out: if (prw_buffer.Pointer != NULL) AcpiOsFree(prw_buffer.Pointer); return; } /* * Control interface. * * We multiplex ioctls for all participating ACPI devices here. Individual * drivers wanting to be accessible via /dev/acpi should use the register/deregister * interface to make their handlers visible. */ struct acpi_ioctl_hook { TAILQ_ENTRY(acpi_ioctl_hook) link; u_long cmd; int (* fn)(u_long cmd, caddr_t addr, void *arg); void *arg; }; static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks; static int acpi_ioctl_hooks_initted; /* * Register an ioctl handler. */ int acpi_register_ioctl(u_long cmd, int (* fn)(u_long cmd, caddr_t addr, void *arg), void *arg) { struct acpi_ioctl_hook *hp; if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL) return(ENOMEM); hp->cmd = cmd; hp->fn = fn; hp->arg = arg; if (acpi_ioctl_hooks_initted == 0) { TAILQ_INIT(&acpi_ioctl_hooks); acpi_ioctl_hooks_initted = 1; } TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link); return(0); } /* * Deregister an ioctl handler. */ void acpi_deregister_ioctl(u_long cmd, int (* fn)(u_long cmd, caddr_t addr, void *arg)) { struct acpi_ioctl_hook *hp; TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) if ((hp->cmd == cmd) && (hp->fn == fn)) break; if (hp != NULL) { TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link); free(hp, M_ACPIDEV); } } static int acpiopen(dev_t dev, int flag, int fmt, d_thread_t *td) { return(0); } static int acpiclose(dev_t dev, int flag, int fmt, d_thread_t *td) { return(0); } static int acpiioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td) { struct acpi_softc *sc; struct acpi_ioctl_hook *hp; int error, xerror, state; ACPI_LOCK_DECL; ACPI_LOCK; error = state = 0; sc = dev->si_drv1; /* * Scan the list of registered ioctls, looking for handlers. */ if (acpi_ioctl_hooks_initted) { TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) { if (hp->cmd == cmd) { xerror = hp->fn(cmd, addr, hp->arg); if (xerror != 0) error = xerror; goto out; } } } /* * Core ioctls are not permitted for non-writable user. * Currently, other ioctls just fetch information. * Not changing system behavior. */ if(!(flag & FWRITE)){ return EPERM; } /* * Core system ioctls. */ switch (cmd) { case ACPIIO_ENABLE: if (ACPI_FAILURE(acpi_Enable(sc))) error = ENXIO; break; case ACPIIO_DISABLE: if (ACPI_FAILURE(acpi_Disable(sc))) error = ENXIO; break; case ACPIIO_SETSLPSTATE: if (!sc->acpi_enabled) { error = ENXIO; break; } state = *(int *)addr; if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) { acpi_SetSleepState(sc, state); } else { error = EINVAL; } break; default: if (error == 0) error = EINVAL; break; } out: ACPI_UNLOCK; return(error); } static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) { char sleep_state[4]; char buf[16]; int error; UINT8 state, TypeA, TypeB; buf[0] = '\0'; for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX+1; state++) { if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) { sprintf(sleep_state, "S%d ", state); strcat(buf, sleep_state); } } error = sysctl_handle_string(oidp, buf, sizeof(buf), req); return(error); } static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS) { char sleep_state[10]; int error; u_int new_state, old_state; old_state = *(u_int *)oidp->oid_arg1; if (old_state > ACPI_S_STATES_MAX+1) { strcpy(sleep_state, "unknown"); } else { bzero(sleep_state, sizeof(sleep_state)); strncpy(sleep_state, sleep_state_names[old_state], sizeof(sleep_state_names[old_state])); } error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req); if (error == 0 && req->newptr != NULL) { for (new_state = ACPI_STATE_S0; new_state <= ACPI_S_STATES_MAX+1; new_state++) { if (strncmp(sleep_state, sleep_state_names[new_state], sizeof(sleep_state)) == 0) break; } if (new_state <= ACPI_S_STATES_MAX+1) { if (new_state != old_state) { *(u_int *)oidp->oid_arg1 = new_state; } } else { error = EINVAL; } } return(error); } #ifdef ACPI_DEBUG /* * Support for parsing debug options from the kernel environment. * * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers * by specifying the names of the bits in the debug.acpi.layer and * debug.acpi.level environment variables. Bits may be unset by * prefixing the bit name with !. */ struct debugtag { char *name; UINT32 value; }; static struct debugtag dbg_layer[] = { {"ACPI_UTILITIES", ACPI_UTILITIES}, {"ACPI_HARDWARE", ACPI_HARDWARE}, {"ACPI_EVENTS", ACPI_EVENTS}, {"ACPI_TABLES", ACPI_TABLES}, {"ACPI_NAMESPACE", ACPI_NAMESPACE}, {"ACPI_PARSER", ACPI_PARSER}, {"ACPI_DISPATCHER", ACPI_DISPATCHER}, {"ACPI_EXECUTER", ACPI_EXECUTER}, {"ACPI_RESOURCES", ACPI_RESOURCES}, {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER}, {"ACPI_OS_SERVICES", ACPI_OS_SERVICES}, {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER}, {"ACPI_BUS", ACPI_BUS}, {"ACPI_SYSTEM", ACPI_SYSTEM}, {"ACPI_POWER", ACPI_POWER}, {"ACPI_EC", ACPI_EC}, {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER}, {"ACPI_BATTERY", ACPI_BATTERY}, {"ACPI_BUTTON", ACPI_BUTTON}, {"ACPI_PROCESSOR", ACPI_PROCESSOR}, {"ACPI_THERMAL", ACPI_THERMAL}, {"ACPI_FAN", ACPI_FAN}, {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS}, {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS}, {NULL, 0} }; static struct debugtag dbg_level[] = { {"ACPI_LV_ERROR", ACPI_LV_ERROR}, {"ACPI_LV_WARN", ACPI_LV_WARN}, {"ACPI_LV_INIT", ACPI_LV_INIT}, {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT}, {"ACPI_LV_INFO", ACPI_LV_INFO}, {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS}, /* Trace verbosity level 1 [Standard Trace Level] */ {"ACPI_LV_PARSE", ACPI_LV_PARSE}, {"ACPI_LV_LOAD", ACPI_LV_LOAD}, {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH}, {"ACPI_LV_EXEC", ACPI_LV_EXEC}, {"ACPI_LV_NAMES", ACPI_LV_NAMES}, {"ACPI_LV_OPREGION", ACPI_LV_OPREGION}, {"ACPI_LV_BFIELD", ACPI_LV_BFIELD}, {"ACPI_LV_TABLES", ACPI_LV_TABLES}, {"ACPI_LV_VALUES", ACPI_LV_VALUES}, {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS}, {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES}, {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS}, {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE}, {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES}, {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1}, /* Trace verbosity level 2 [Function tracing and memory allocation] */ {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS}, {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS}, {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS}, {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2}, {"ACPI_LV_ALL", ACPI_LV_ALL}, /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */ {"ACPI_LV_MUTEX", ACPI_LV_MUTEX}, {"ACPI_LV_THREADS", ACPI_LV_THREADS}, {"ACPI_LV_IO", ACPI_LV_IO}, {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS}, {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3}, /* Exceptionally verbose output -- also used in the global "DebugLevel" */ {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE}, {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO}, {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES}, {"ACPI_LV_EVENTS", ACPI_LV_EVENTS}, {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE}, {NULL, 0} }; static void acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag) { char *ep; int i, l; int set; while (*cp) { if (isspace(*cp)) { cp++; continue; } ep = cp; while (*ep && !isspace(*ep)) ep++; if (*cp == '!') { set = 0; cp++; if (cp == ep) continue; } else { set = 1; } l = ep - cp; for (i = 0; tag[i].name != NULL; i++) { if (!strncmp(cp, tag[i].name, l)) { if (set) { *flag |= tag[i].value; } else { *flag &= ~tag[i].value; } printf("ACPI_DEBUG: set '%s'\n", tag[i].name); } } cp = ep; } } static void acpi_set_debugging(void *junk) { char *cp; if (!cold) return; AcpiDbgLayer = 0; AcpiDbgLevel = 0; if ((cp = getenv("debug.acpi.layer")) != NULL) { acpi_parse_debug(cp, &dbg_layer[0], &AcpiDbgLayer); freeenv(cp); } if ((cp = getenv("debug.acpi.level")) != NULL) { acpi_parse_debug(cp, &dbg_level[0], &AcpiDbgLevel); freeenv(cp); } printf("ACPI debug layer 0x%x debug level 0x%x\n", AcpiDbgLayer, AcpiDbgLevel); } SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging, NULL); #endif static int acpi_pm_func(u_long cmd, void *arg, ...) { int state, acpi_state; int error; struct acpi_softc *sc; va_list ap; error = 0; switch (cmd) { case POWER_CMD_SUSPEND: sc = (struct acpi_softc *)arg; if (sc == NULL) { error = EINVAL; goto out; } va_start(ap, arg); state = va_arg(ap, int); va_end(ap); switch (state) { case POWER_SLEEP_STATE_STANDBY: acpi_state = sc->acpi_standby_sx; break; case POWER_SLEEP_STATE_SUSPEND: acpi_state = sc->acpi_suspend_sx; break; case POWER_SLEEP_STATE_HIBERNATE: acpi_state = ACPI_STATE_S4; break; default: error = EINVAL; goto out; } acpi_SetSleepState(sc, acpi_state); break; default: error = EINVAL; goto out; } out: return (error); } static void acpi_pm_register(void *arg) { if (!cold) return; if (resource_disabled("acpi", 0)) return; power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL); } SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);