/*- * Copyright (c) 2000 Takanori Watanabe * Copyright (c) 2000 Mitsuru IWASAKI * Copyright (c) 2000 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 "acpi.h" #include #include MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices"); /* * 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 = { acpiopen, acpiclose, noread, nowrite, acpiioctl, nopoll, nommap, nostrategy, "acpi", CDEV_MAJOR, nodump, nopsize, 0, -1 }; 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_resources(struct resource_list *rl, const char *name, int type, const char *format); 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 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); #ifdef ACPI_DEBUG static void acpi_set_debugging(void); #endif static void acpi_system_eventhandler_sleep(void *arg, int state); static void acpi_system_eventhandler_wakeup(void *arg, int state); 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), {0, 0} }; static driver_t acpi_driver = { "acpi", acpi_methods, sizeof(struct acpi_softc), }; devclass_t acpi_devclass; DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, 0, 0); SYSCTL_INT(_debug, OID_AUTO, acpi_debug_layer, CTLFLAG_RW, &AcpiDbgLayer, 0, ""); SYSCTL_INT(_debug, OID_AUTO, acpi_debug_level, CTLFLAG_RW, &AcpiDbgLevel, 0, ""); /* * Detect ACPI, perform early initialisation */ static void acpi_identify(driver_t *driver, device_t parent) { device_t child; void *rsdp; int error; #ifdef ENABLE_DEBUGGER char *debugpoint = getenv("debug.acpi.debugger"); #endif if(!cold){ printf("Don't load this driver from userland!!\n"); return ; } /* * Make sure we're not being doubly invoked. */ if (device_find_child(parent, "acpi", 0) != NULL) return; #ifdef ACPI_DEBUG acpi_set_debugging(); #endif /* * Start up ACPICA */ #ifdef ENABLE_DEBUGGER if (debugpoint && !strcmp(debugpoint, "init")) acpi_EnterDebugger(); #endif if ((error = AcpiInitializeSubsystem()) != AE_OK) { printf("ACPI: initialisation failed: %s\n", acpi_strerror(error)); return; } #ifdef ENABLE_DEBUGGER if (debugpoint && !strcmp(debugpoint, "tables")) acpi_EnterDebugger(); #endif if (((error = AcpiFindRootPointer(&rsdp)) != AE_OK) || ((error = AcpiLoadTables(rsdp)) != AE_OK)) { printf("ACPI: table load failed: %s\n", acpi_strerror(error)); return; } /* * Attach the actual ACPI device. */ if ((child = BUS_ADD_CHILD(parent, 0, "acpi", 0)) == NULL) { device_printf(parent, "ACPI: could not attach\n"); return; } } /* * 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]; int error; if ((error = AcpiGetTableHeader(ACPI_TABLE_RSDT, 1, &th)) != AE_OK) { device_printf(dev, "couldn't get RSDT header: %s\n", acpi_strerror(error)); return(ENXIO); } sprintf(buf, "%.6s %.8s", th.OemId, th.OemTableId); device_set_desc_copy(dev, buf); return(0); } static int acpi_attach(device_t dev) { struct acpi_softc *sc; int error; #ifdef ENABLE_DEBUGGER char *debugpoint = getenv("debug.acpi.debugger"); #endif sc = device_get_softc(dev); bzero(sc, sizeof(*sc)); sc->acpi_dev = dev; #ifdef ENABLE_DEBUGGER if (debugpoint && !strcmp(debugpoint, "spaces")) acpi_EnterDebugger(); #endif /* * Install the default address space handlers. */ if ((error = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, ADDRESS_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL)) != AE_OK) { device_printf(dev, "could not initialise SystemMemory handler: %s\n", acpi_strerror(error)); return(ENXIO); } if ((error = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, ADDRESS_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL)) != AE_OK) { device_printf(dev, "could not initialise SystemIO handler: %s\n", acpi_strerror(error)); return(ENXIO); } if ((error = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, ADDRESS_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL)) != AE_OK) { device_printf(dev, "could not initialise PciConfig handler: %s\n", acpi_strerror(error)); return(ENXIO); } /* * Bring ACPI fully online. * * Note that we request that device _STA and _INI methods not be run (ACPI_NO_DEVICE_INIT) * and the final object initialisation pass be skipped (ACPI_NO_OBJECT_INIT). * * XXX We need to arrange for the object init pass after we have attached all our * child devices. */ #ifdef ENABLE_DEBUGGER if (debugpoint && !strcmp(debugpoint, "enable")) acpi_EnterDebugger(); #endif if ((error = AcpiEnableSubsystem(ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT)) != AE_OK) { device_printf(dev, "could not enable ACPI: %s\n", acpi_strerror(error)); return(ENXIO); } /* * 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; /* Enable and clear fixed events and install handlers. */ if (AcpiGbl_FACP != NULL && AcpiGbl_FACP->PwrButton == 0) { AcpiEnableEvent(ACPI_EVENT_POWER_BUTTON, ACPI_EVENT_FIXED); AcpiClearEvent(ACPI_EVENT_POWER_BUTTON, ACPI_EVENT_FIXED); AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON, acpi_eventhandler_power_button_for_sleep, sc); device_printf(dev, "power button is handled as a fixed feature programming model.\n"); } if (AcpiGbl_FACP != NULL && AcpiGbl_FACP->SleepButton == 0) { AcpiEnableEvent(ACPI_EVENT_SLEEP_BUTTON, ACPI_EVENT_FIXED); AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON, ACPI_EVENT_FIXED); AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON, acpi_eventhandler_sleep_button_for_sleep, sc); device_printf(dev, "sleep button is handled as a fixed feature programming model.\n"); } /* * Scan the namespace and attach/initialise children. */ #ifdef ENABLE_DEBUGGER if (debugpoint && !strcmp(debugpoint, "probe")) acpi_EnterDebugger(); #endif acpi_probe_children(dev); /* * 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; /* * Create the control device */ sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, 0, 5, 0660, "acpi"); sc->acpi_dev_t->si_drv1 = sc; #ifdef ENABLE_DEBUGGER if (debugpoint && !strcmp(debugpoint, "running")) acpi_EnterDebugger(); #endif return(0); } /* * 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); } /* * Print child device resource usage */ static int acpi_print_resources(struct resource_list *rl, const char *name, int type, const char *format) { struct resource_list_entry *rle; int printed, retval; printed = 0; retval = 0; if (!SLIST_FIRST(rl)) return(0); /* Yes, this is kinda cheating */ SLIST_FOREACH(rle, rl, link) { if (rle->type == type) { if (printed == 0) retval += printf(" %s ", name); else if (printed > 0) retval += printf(","); printed++; retval += printf(format, rle->start); if (rle->count > 1) { retval += printf("-"); retval += printf(format, rle->start + rle->count - 1); } } } return(retval); } 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 += acpi_print_resources(rl, "port", SYS_RES_IOPORT, "%#lx"); retval += acpi_print_resources(rl, "iomem", SYS_RES_MEMORY, "%#lx"); retval += acpi_print_resources(rl, "irq", SYS_RES_IRQ, "%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; default: panic("bad ivar read request (%d)\n", index); 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)\n", 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)); } /* * Scan relevant portions of the ACPI namespace and attach child devices. * * Note that we only expect to find devices in the \_TZ_, \_SI_ and \_SB_ scopes, * and \_TZ_ becomes obsolete in the ACPI 2.0 spec. */ static void acpi_probe_children(device_t bus) { ACPI_HANDLE parent; static char *scopes[] = {"\\_TZ_", "\\_SI", "\\_SB_", NULL}; int i; /* * Create any static children by calling device identify methods. */ 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.) */ for (i = 0; scopes[i] != NULL; i++) if ((AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], &parent)) == AE_OK) 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. */ 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. */ bus_generic_attach(bus); } /* * 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; if (AcpiGetType(handle, &type) == AE_OK) { switch(type) { case ACPI_TYPE_DEVICE: case ACPI_TYPE_PROCESSOR: case ACPI_TYPE_THERMAL: case ACPI_TYPE_POWER: /* * Create a placeholder device for this node. Sort the placeholder * so that the probe/attach passes will run breadth-first. */ child = BUS_ADD_CHILD(bus, level * 10, NULL, -1); acpi_set_handle(child, handle); } } return(AE_OK); } static void acpi_shutdown_pre_sync(void *arg, int howto) { /* * disable all of 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. */ acpi_Disable((struct acpi_softc *)arg); } static void acpi_shutdown_final(void *arg, int howto) { ACPI_STATUS status; if (howto == RB_POWEROFF) { printf("Power system off using ACPI...\n"); if ((status = AcpiSetSystemSleepState(ACPI_STATE_S5)) != AE_OK) { printf("ACPI power-off failed - %s\n", acpi_strerror(status)); } else { DELAY(1000000); printf("ACPI power-off failed - timeout\n"); } } } /* * 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; if ((hid == NULL) || (strlen(hid) != 7)) return(FALSE); if ((h = acpi_get_handle(dev)) == NULL) return(FALSE); if ((error = AcpiGetObjectInfo(h, &devinfo)) != AE_OK) return(FALSE); if ((devinfo.Valid & ACPI_VALID_HID) && !strncmp(hid, devinfo.HardwareId, 7)) return(TRUE); return(FALSE); } /* * Perform the tedious double-get procedure required for fetching something into * an ACPI_BUFFER that has not been initialised. */ ACPI_STATUS acpi_GetIntoBuffer(ACPI_HANDLE handle, ACPI_STATUS (*func)(ACPI_HANDLE, ACPI_BUFFER *), ACPI_BUFFER *buf) { ACPI_STATUS status; buf->Length = 0; buf->Pointer = NULL; if ((status = func(handle, buf)) != AE_BUFFER_OVERFLOW) return(status); if ((buf->Pointer = AcpiOsCallocate(buf->Length)) == NULL) return(AE_NO_MEMORY); return(func(handle, buf)); } /* * 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); } /* * 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; switch (state) { case ACPI_STATE_S0: /* XXX only for testing */ status = AcpiSetSystemSleepState((UINT8)state); if (status != AE_OK) { device_printf(sc->acpi_dev, "AcpiSetSystemSleepState failed - %s\n", acpi_strerror(status)); } break; case ACPI_STATE_S1: /* * 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(AE_ERROR); } sc->acpi_sstate = state; status = AcpiSetSystemSleepState((UINT8)state); if (status != AE_OK) { device_printf(sc->acpi_dev, "AcpiSetSystemSleepState failed - %s\n", acpi_strerror(status)); } DEVICE_RESUME(root_bus); sc->acpi_sstate = ACPI_STATE_S0; 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; } return(status); } /* * Enable/Disable ACPI */ ACPI_STATUS acpi_Enable(struct acpi_softc *sc) { ACPI_STATUS status; u_int32_t flags; 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(status); } ACPI_STATUS acpi_Disable(struct acpi_softc *sc) { ACPI_STATUS status; if (sc->acpi_enabled) { status = AcpiDisable(); } else { status = AE_OK; } if (status == AE_OK) sc->acpi_enabled = 0; return(status); } /* * 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; if ((h = acpi_get_handle(dev)) == NULL) return(FALSE); if ((error = AcpiGetObjectInfo(h, &devinfo)) != AE_OK) return(FALSE); if ((devinfo.Valid & ACPI_VALID_HID) && (devinfo.CurrentStatus & 0xf)) return(TRUE); return(FALSE); } /* * Evaluate a path that should return a number */ ACPI_STATUS acpi_EvaluateNumber(ACPI_HANDLE handle, char *path, int *number) { ACPI_STATUS error; ACPI_BUFFER buf; int param[4]; if (handle == NULL) handle = ACPI_ROOT_OBJECT; buf.Pointer = ¶m[0]; buf.Length = sizeof(param); if ((error = AcpiEvaluateObject(handle, path, NULL, &buf)) == AE_OK) { if (param[0] == ACPI_TYPE_NUMBER) { *number = param[1]; } else { error = AE_TYPE; } } return(error); } /* * ACPI Event Handlers */ /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */ static void acpi_system_eventhandler_sleep(void *arg, int state) { if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) { return; } acpi_SetSleepState((struct acpi_softc *)arg, state); } static void acpi_system_eventhandler_wakeup(void *arg, int state) { /* Well, what to do? :-) */ } /* * 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; EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx); return(INTERRUPT_HANDLED); } UINT32 acpi_eventhandler_power_button_for_wakeup(void *context) { struct acpi_softc *sc = (struct acpi_softc *)context; EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx); return(INTERRUPT_HANDLED); } UINT32 acpi_eventhandler_sleep_button_for_sleep(void *context) { struct acpi_softc *sc = (struct acpi_softc *)context; EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx); return(INTERRUPT_HANDLED); } UINT32 acpi_eventhandler_sleep_button_for_wakeup(void *context) { struct acpi_softc *sc = (struct acpi_softc *)context; EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx); return(INTERRUPT_HANDLED); } /* * XXX This is kinda ugly, and should not be here. */ struct acpi_staticbuf { ACPI_BUFFER buffer; char data[512]; }; char * acpi_strerror(ACPI_STATUS excep) { static struct acpi_staticbuf buf; buf.buffer.Length = 512; buf.buffer.Pointer = &buf.data[0]; if (AcpiFormatException(excep, &buf.buffer) == AE_OK) return(buf.buffer.Pointer); return("(error formatting exception)"); } char * acpi_name(ACPI_HANDLE handle) { static struct acpi_staticbuf buf; buf.buffer.Length = 512; buf.buffer.Pointer = &buf.data[0]; if (AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf.buffer) == AE_OK) 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, *np; int len; np = acpi_name(handle); if (*np == '\\') np++; if ((cp = getenv("debug.acpi.avoid")) == NULL) return(0); /* scan the avoid list checking for a match */ 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)) { printf("avoiding '%s'\n", np); return(1); } cp += len; } return(0); } /* * Control interface. * * XXX this is provided as a temporary measure for * backwards compatibility for now. A better * interface will probably use sysctl or similar. */ static int acpiopen(dev_t dev, int flag, int fmt, struct proc * p) { return(0); } static int acpiclose(dev_t dev, int flag, int fmt, struct proc * p) { return(0); } static int acpiioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc * p) { int error, state; struct acpi_softc *sc; error = state = 0; sc = dev->si_drv1; 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_STATE_S5) { acpi_SetSleepState(sc, state); } else { error = EINVAL; } break; default: error = EINVAL; break; } return(error); } #ifdef ACPI_DEBUG struct debugtag { char *name; UINT32 value; }; static struct debugtag dbg_layer[] = { {"GLOBAL", 0x00000001}, {"COMMON", 0x00000002}, {"PARSER", 0x00000004}, {"DISPATCHER", 0x00000008}, {"INTERPRETER", 0x00000010}, {"NAMESPACE", 0x00000020}, {"RESOURCE_MANAGER", 0x00000040}, {"TABLE_MANAGER", 0x00000080}, {"EVENT_HANDLING", 0x00000100}, {"HARDWARE", 0x00000200}, {"MISCELLANEOUS", 0x00000400}, {"OS_DEPENDENT", 0x00000800}, {"BUS_MANAGER", 0x00001000}, {"PROCESSOR_CONTROL", 0x00002000}, {"SYSTEM_CONTROL", 0x00004000}, {"THERMAL_CONTROL", 0x00008000}, {"POWER_CONTROL", 0x00010000}, {"EMBEDDED_CONTROLLER", 0x00020000}, {"BATTERY", 0x00040000}, {"DEBUGGER", 0x00100000}, {"ALL_COMPONENTS", 0x001FFFFF}, {NULL, 0} }; static struct debugtag dbg_level[] = { {"ACPI_OK", 0x00000001}, {"ACPI_INFO", 0x00000002}, {"ACPI_WARN", 0x00000004}, {"ACPI_ERROR", 0x00000008}, {"ACPI_FATAL", 0x00000010}, {"ACPI_DEBUG_OBJECT", 0x00000020}, {"ACPI_ALL", 0x0000003F}, {"TRACE_PARSE", 0x00000100}, {"TRACE_DISPATCH", 0x00000200}, {"TRACE_LOAD", 0x00000400}, {"TRACE_EXEC", 0x00000800}, {"TRACE_NAMES", 0x00001000}, {"TRACE_OPREGION", 0x00002000}, {"TRACE_BFIELD", 0x00004000}, {"TRACE_TRASH", 0x00008000}, {"TRACE_TABLES", 0x00010000}, {"TRACE_FUNCTIONS", 0x00020000}, {"TRACE_VALUES", 0x00040000}, {"TRACE_OBJECTS", 0x00080000}, {"TRACE_ALLOCATIONS", 0x00100000}, {"TRACE_RESOURCES", 0x00200000}, {"TRACE_IO", 0x00400000}, {"TRACE_INTERRUPTS", 0x00800000}, {"TRACE_USER_REQUESTS", 0x01000000}, {"TRACE_PACKAGE", 0x02000000}, {"TRACE_MUTEX", 0x04000000}, {"TRACE_ALL", 0x0FFFFF00}, {"VERBOSE_AML_DISASSEMBLE", 0x10000000}, {"VERBOSE_INFO", 0x20000000}, {"VERBOSE_TABLES", 0x40000000}, {"VERBOSE_EVENTS", 0x80000000}, {"VERBOSE_ALL", 0xF0000000}, {NULL, 0} }; static void acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag) { char *ep; int i, l; while (*cp) { if (isspace(*cp)) { cp++; continue; } ep = cp; while (*ep && !isspace(*ep)) ep++; l = ep - cp; for (i = 0; tag[i].name != NULL; i++) { if (!strncmp(cp, tag[i].name, l)) { *flag |= tag[i].value; printf("ACPI_DEBUG: set '%s'\n", tag[i].name); } } cp = ep; } } static void acpi_set_debugging(void) { char *cp; if ((cp = getenv("debug.acpi.layer")) != NULL) acpi_parse_debug(cp, &dbg_layer[0], &AcpiDbgLayer); if ((cp = getenv("debug.acpi.level")) != NULL) acpi_parse_debug(cp, &dbg_level[0], &AcpiDbgLevel); } #endif