/* $NetBSD: acpi.c,v 1.278.4.1 2023/11/27 19:39:53 martin Exp $ */ /*- * Copyright (c) 2003, 2007 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum of By Noon Software, Inc. * * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * Copyright (c) 2003 Wasabi Systems, Inc. * All rights reserved. * * Written by Frank van der Linden for Wasabi Systems, Inc. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the NetBSD Project by * Wasabi Systems, Inc. * 4. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC * 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. */ /* * Copyright 2001, 2003 Wasabi Systems, Inc. * All rights reserved. * * Written by Jason R. Thorpe for Wasabi Systems, Inc. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the NetBSD Project by * Wasabi Systems, Inc. * 4. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC * 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. */ #include __KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.278.4.1 2023/11/27 19:39:53 martin Exp $"); #include "pci.h" #include "opt_acpi.h" #include "opt_pcifixup.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ioconf.h" #define _COMPONENT ACPI_BUS_COMPONENT ACPI_MODULE_NAME ("acpi") /* * The acpi_active variable is set when the ACPI subsystem is active. * Machine-dependent code may wish to skip other steps (such as attaching * subsystems that ACPI supercedes) when ACPI is active. */ int acpi_active = 0; int acpi_suspended = 0; int acpi_force_load = 0; int acpi_verbose_loaded = 0; struct acpi_softc *acpi_softc = NULL; static uint64_t acpi_root_pointer; extern kmutex_t acpi_interrupt_list_mtx; static ACPI_HANDLE acpi_scopes[4]; ACPI_TABLE_HEADER *madt_header; ACPI_TABLE_HEADER *gtdt_header; /* * This structure provides a context for the ACPI * namespace walk performed in acpi_build_tree(). */ struct acpi_walkcontext { struct acpi_softc *aw_sc; struct acpi_devnode *aw_parent; }; /* * Ignored HIDs. */ static const char * const acpi_ignored_ids[] = { #if defined(i386) || defined(x86_64) "ACPI0007", /* ACPI CPUs do not attach to acpi(4) */ "PNP0000", /* AT interrupt controller is handled internally */ "PNP0200", /* AT DMA controller is handled internally */ "PNP0A??", /* PCI Busses are handled internally */ "PNP0B00", /* AT RTC is handled internally */ "PNP0C0F", /* ACPI PCI link devices are handled internally */ #endif #if defined(x86_64) "PNP0C04", /* FPU is handled internally */ #endif #if defined(__aarch64__) "ACPI0007", /* ACPI CPUs are attached via MADT GICC subtables */ "PNP0C0F", /* ACPI PCI link devices are handled internally */ #endif NULL }; /* * Devices that should be attached early. */ static const char * const acpi_early_ids[] = { "PNP0C09", /* acpiec(4) */ NULL }; static int acpi_match(device_t, cfdata_t, void *); static int acpi_submatch(device_t, cfdata_t, const int *, void *); static void acpi_attach(device_t, device_t, void *); static int acpi_detach(device_t, int); static void acpi_childdet(device_t, device_t); static bool acpi_suspend(device_t, const pmf_qual_t *); static bool acpi_resume(device_t, const pmf_qual_t *); static void acpi_build_tree(struct acpi_softc *); static void acpi_config_tree(struct acpi_softc *); static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, void *, void **); static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, void *, void **); static void acpi_make_name(struct acpi_devnode *, uint32_t); static int acpi_rescan(device_t, const char *, const int *); static void acpi_rescan_early(struct acpi_softc *); static void acpi_rescan_nodes(struct acpi_softc *); static void acpi_rescan_capabilities(device_t); static int acpi_print(void *aux, const char *); static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); static void acpi_register_fixed_button(struct acpi_softc *, int); static void acpi_deregister_fixed_button(struct acpi_softc *, int); static uint32_t acpi_fixed_button_handler(void *); static void acpi_fixed_button_pressed(void *); static void acpi_sleep_init(struct acpi_softc *); static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); static bool acpi_is_scope(struct acpi_devnode *); static ACPI_TABLE_HEADER *acpi_map_rsdt(void); static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); void acpi_print_verbose_stub(struct acpi_softc *); void acpi_print_dev_stub(const char *); static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); /* * Probe for ACPI support. * * This is called by the machine-dependent ACPI front-end. * Note: this is not an autoconfiguration interface function. */ int acpi_probe(void) { ACPI_TABLE_HEADER *rsdt; ACPI_STATUS rv; int quirks; if (acpi_softc != NULL) panic("%s: already probed", __func__); mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); /* * Start up ACPICA. */ AcpiGbl_EnableInterpreterSlack = true; rv = AcpiInitializeSubsystem(); if (ACPI_FAILURE(rv)) { aprint_error("%s: failed to initialize subsystem\n", __func__); return 0; } /* * Allocate space for RSDT/XSDT and DSDT, * but allow resizing if more tables exist. */ rv = AcpiInitializeTables(NULL, 2, true); if (ACPI_FAILURE(rv)) { aprint_error("%s: failed to initialize tables\n", __func__); goto fail; } rv = AcpiLoadTables(); if (ACPI_FAILURE(rv)) { aprint_error("%s: failed to load tables\n", __func__); goto fail; } rsdt = acpi_map_rsdt(); if (rsdt == NULL) { aprint_error("%s: failed to map RSDT\n", __func__); goto fail; } quirks = acpi_find_quirks(); if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_BROKEN) != 0) { aprint_normal("ACPI: BIOS is listed as broken:\n"); aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " "AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId, rsdt->OemRevision, rsdt->AslCompilerId, rsdt->AslCompilerRevision); aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); acpi_unmap_rsdt(rsdt); goto fail; } if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_OLDBIOS) != 0) { aprint_normal("ACPI: BIOS is too old (%s). " "Set acpi_force_load to use.\n", pmf_get_platform("bios-date")); acpi_unmap_rsdt(rsdt); goto fail; } acpi_unmap_rsdt(rsdt); rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); if (ACPI_FAILURE(rv)) { aprint_error("%s: failed to enable subsystem\n", __func__); goto fail; } return 1; fail: (void)AcpiTerminate(); return 0; } void acpi_disable(void) { if (acpi_softc == NULL) return; KASSERT(acpi_active != 0); if (AcpiGbl_FADT.SmiCommand != 0) AcpiDisable(); } int acpi_check(device_t parent, const char *ifattr) { return (config_search_ia(acpi_submatch, parent, ifattr, NULL) != NULL); } int acpi_reset(void) { struct acpi_softc *sc = acpi_softc; ACPI_GENERIC_ADDRESS *ResetReg; ACPI_PCI_ID PciId; ACPI_STATUS status; if (sc == NULL) return ENXIO; ResetReg = &AcpiGbl_FADT.ResetRegister; /* Check if the reset register is supported */ if (!(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) || !ResetReg->Address) { return ENOENT; } switch (ResetReg->SpaceId) { case ACPI_ADR_SPACE_PCI_CONFIG: PciId.Segment = PciId.Bus = 0; PciId.Device = ACPI_GAS_PCI_DEV(ResetReg->Address); PciId.Function = ACPI_GAS_PCI_FUNC(ResetReg->Address); status = AcpiOsWritePciConfiguration(&PciId, ACPI_GAS_PCI_REGOFF(ResetReg->Address), AcpiGbl_FADT.ResetValue, ResetReg->BitWidth); break; case ACPI_ADR_SPACE_SYSTEM_IO: case ACPI_ADR_SPACE_SYSTEM_MEMORY: status = AcpiReset(); break; default: status = AE_TYPE; break; } return ACPI_FAILURE(status) ? EIO : 0; } /* * Autoconfiguration. */ static int acpi_match(device_t parent, cfdata_t match, void *aux) { /* * XXX: Nada; MD code has called acpi_probe(). */ return 1; } static int acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) { struct cfattach *ca; ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); return (ca == &acpi_ca); } static void acpi_attach(device_t parent, device_t self, void *aux) { struct acpi_softc *sc = device_private(self); struct acpibus_attach_args *aa = aux; ACPI_TABLE_HEADER *rsdt; ACPI_STATUS rv; aprint_naive("\n"); aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); if (acpi_softc != NULL) panic("%s: already attached", __func__); rsdt = acpi_map_rsdt(); if (rsdt == NULL) aprint_error_dev(self, "X/RSDT: Not found\n"); else { aprint_verbose_dev(self, "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId, rsdt->OemRevision, rsdt->AslCompilerId, rsdt->AslCompilerRevision); } acpi_unmap_rsdt(rsdt); sc->sc_dev = self; sc->sc_root = NULL; sc->sc_sleepstate = ACPI_STATE_S0; sc->sc_quirks = acpi_find_quirks(); sysmon_power_settype("acpi"); sc->sc_iot = aa->aa_iot; sc->sc_memt = aa->aa_memt; sc->sc_pc = aa->aa_pc; sc->sc_pciflags = aa->aa_pciflags; sc->sc_ic = aa->aa_ic; sc->sc_dmat = aa->aa_dmat; sc->sc_dmat64 = aa->aa_dmat64; SIMPLEQ_INIT(&sc->ad_head); acpi_softc = sc; if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) aprint_error_dev(self, "couldn't establish power handler\n"); /* * Bring ACPICA on-line. */ rv = AcpiEnableSubsystem(ACPI_FULL_INITIALIZATION); if (ACPI_FAILURE(rv)) goto fail; /* * Early initialization of acpiec(4) via ECDT. */ (void)config_found_ia(self, "acpiecdtbus", aa, NULL); rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); if (ACPI_FAILURE(rv)) goto fail; /* * Scan the namespace and build our device tree. */ acpi_build_tree(sc); #if NPCI > 0 /* * Probe MCFG table */ acpimcfg_probe(sc); #endif acpi_md_callback(sc); /* * Early initialization of the _PDC control method * that may load additional SSDT tables dynamically. */ (void)acpi_md_pdc(); /* * Install global notify handlers. */ rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); if (ACPI_FAILURE(rv)) goto fail; rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); if (ACPI_FAILURE(rv)) goto fail; acpi_active = 1; if (!AcpiGbl_ReducedHardware) { /* Show SCI interrupt. */ aprint_verbose_dev(self, "SCI interrupting at int %u\n", AcpiGbl_FADT.SciInterrupt); /* * Install fixed-event handlers. */ acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); } acpitimer_init(sc); acpi_config_tree(sc); acpi_sleep_init(sc); #ifdef ACPI_DEBUG acpi_debug_init(); #endif /* * Print debug information. */ acpi_print_verbose(sc); return; fail: aprint_error("%s: failed to initialize ACPI: %s\n", __func__, AcpiFormatException(rv)); } /* * XXX: This is incomplete. */ static int acpi_detach(device_t self, int flags) { struct acpi_softc *sc = device_private(self); ACPI_STATUS rv; int rc; rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, ACPI_SYSTEM_NOTIFY, acpi_notify_handler); if (ACPI_FAILURE(rv)) return EBUSY; rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, ACPI_DEVICE_NOTIFY, acpi_notify_handler); if (ACPI_FAILURE(rv)) return EBUSY; if ((rc = config_detach_children(self, flags)) != 0) return rc; if ((rc = acpitimer_detach()) != 0) return rc; if (!AcpiGbl_ReducedHardware) { acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); } pmf_device_deregister(self); acpi_softc = NULL; return 0; } static void acpi_childdet(device_t self, device_t child) { struct acpi_softc *sc = device_private(self); struct acpi_devnode *ad; if (sc->sc_apmbus == child) sc->sc_apmbus = NULL; if (sc->sc_hpet == child) sc->sc_hpet = NULL; if (sc->sc_wdrt == child) sc->sc_wdrt = NULL; SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { if (ad->ad_device == child) ad->ad_device = NULL; } } static bool acpi_suspend(device_t dv, const pmf_qual_t *qual) { acpi_suspended = 1; return true; } static bool acpi_resume(device_t dv, const pmf_qual_t *qual) { acpi_suspended = 0; return true; } /* * Namespace scan. */ static void acpi_build_tree(struct acpi_softc *sc) { struct acpi_walkcontext awc; /* * Get the root scope handles. */ KASSERT(__arraycount(acpi_scopes) == 4); (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); /* * Make the root node. */ awc.aw_sc = sc; awc.aw_parent = NULL; (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); KASSERT(sc->sc_root == NULL); KASSERT(awc.aw_parent != NULL); sc->sc_root = awc.aw_parent; /* * Build the internal namespace. */ (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); /* * Scan the internal namespace. */ (void)acpi_pcidev_scan(sc->sc_root); } static void acpi_config_tree(struct acpi_softc *sc) { /* * Configure all everything found "at acpi?". */ (void)acpi_rescan(sc->sc_dev, NULL, NULL); /* * Update GPE information. * * Note that this must be called after * all GPE handlers have been installed. */ (void)AcpiUpdateAllGpes(); /* * Defer rest of the configuration. */ (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); } static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, void *context, void **status) { struct acpi_walkcontext *awc = context; struct acpi_softc *sc = awc->aw_sc; struct acpi_devnode *ad; ACPI_DEVICE_INFO *devinfo; ACPI_OBJECT_TYPE type; ACPI_STATUS rv; rv = AcpiGetObjectInfo(handle, &devinfo); if (ACPI_FAILURE(rv)) return AE_OK; /* Do not terminate the walk. */ type = devinfo->Type; switch (type) { case ACPI_TYPE_DEVICE: acpi_activate_device(handle, &devinfo); /* FALLTHROUGH */ case ACPI_TYPE_PROCESSOR: case ACPI_TYPE_THERMAL: case ACPI_TYPE_POWER: ad = kmem_zalloc(sizeof(*ad), KM_SLEEP); ad->ad_device = NULL; ad->ad_notify = NULL; ad->ad_pciinfo = NULL; ad->ad_wakedev = NULL; ad->ad_type = type; ad->ad_handle = handle; ad->ad_devinfo = devinfo; ad->ad_root = sc->sc_dev; ad->ad_parent = awc->aw_parent; acpi_match_node_init(ad); acpi_make_name(ad, devinfo->Name); /* * Identify wake GPEs from the _PRW. Note that * AcpiUpdateAllGpes() must be called afterwards. */ if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) acpi_wakedev_init(ad); SIMPLEQ_INIT(&ad->ad_child_head); SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); if (ad->ad_parent != NULL) { SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, ad, ad_child_list); } awc->aw_parent = ad; } return AE_OK; } static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, void *context, void **status) { struct acpi_walkcontext *awc = context; KASSERT(awc != NULL); KASSERT(awc->aw_parent != NULL); if (handle == awc->aw_parent->ad_handle) awc->aw_parent = awc->aw_parent->ad_parent; return AE_OK; } static void acpi_make_name(struct acpi_devnode *ad, uint32_t name) { ACPI_NAME_UNION *anu; int clear, i; anu = (ACPI_NAME_UNION *)&name; ad->ad_name[4] = '\0'; for (i = 3, clear = 0; i >= 0; i--) { if (clear == 0 && anu->Ascii[i] == '_') ad->ad_name[i] = '\0'; else { ad->ad_name[i] = anu->Ascii[i]; clear = 1; } } if (ad->ad_name[0] == '\0') ad->ad_name[0] = '_'; } /* * Device attachment. */ static int acpi_rescan(device_t self, const char *ifattr, const int *locators) { struct acpi_softc *sc = device_private(self); struct acpi_attach_args aa; /* * Try to attach hpet(4) first via a specific table. */ aa.aa_memt = sc->sc_memt; if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) sc->sc_hpet = config_found_ia(sc->sc_dev, "acpihpetbus", &aa, NULL); /* * A two-pass scan for acpinodebus. */ if (ifattr_match(ifattr, "acpinodebus")) { acpi_rescan_early(sc); acpi_rescan_nodes(sc); } /* * Attach APM emulation and acpiwdrt(4). */ if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) sc->sc_apmbus = config_found_ia(sc->sc_dev, "acpiapmbus", NULL, NULL); if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) sc->sc_wdrt = config_found_ia(sc->sc_dev, "acpiwdrtbus", NULL, NULL); return 0; } static void acpi_rescan_early(struct acpi_softc *sc) { struct acpi_attach_args aa; struct acpi_devnode *ad; /* * First scan for devices such as acpiec(4) that * should be always attached before anything else. * We want these devices to attach regardless of * the device status and other restrictions. */ SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { if (ad->ad_device != NULL) continue; if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) continue; if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) continue; aa.aa_node = ad; aa.aa_iot = sc->sc_iot; aa.aa_memt = sc->sc_memt; aa.aa_pc = sc->sc_pc; aa.aa_pciflags = sc->sc_pciflags; aa.aa_ic = sc->sc_ic; aa.aa_dmat = sc->sc_dmat; aa.aa_dmat64 = sc->sc_dmat64; ad->ad_device = config_found_ia(sc->sc_dev, "acpinodebus", &aa, acpi_print); } } static void acpi_rescan_nodes(struct acpi_softc *sc) { const char * const hpet_ids[] = { "PNP0103", NULL }; struct acpi_attach_args aa; struct acpi_devnode *ad; ACPI_DEVICE_INFO *di; SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { if (ad->ad_device != NULL) continue; /* * There is a bug in ACPICA: it defines the type * of the scopes incorrectly for its own reasons. */ if (acpi_is_scope(ad) != false) continue; di = ad->ad_devinfo; /* * We only attach devices which are present, enabled, and * functioning properly. However, if a device is enabled, * it is decoding resources and we should claim these, * if possible. This requires changes to bus_space(9). */ if (di->Type == ACPI_TYPE_DEVICE && !acpi_device_present(ad->ad_handle)) { continue; } if (di->Type == ACPI_TYPE_POWER) continue; if (di->Type == ACPI_TYPE_PROCESSOR) continue; if (acpi_match_hid(di, acpi_early_ids) != 0) continue; if (acpi_match_hid(di, acpi_ignored_ids) != 0) continue; if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) continue; aa.aa_node = ad; aa.aa_iot = sc->sc_iot; aa.aa_memt = sc->sc_memt; aa.aa_pc = sc->sc_pc; aa.aa_pciflags = sc->sc_pciflags; aa.aa_ic = sc->sc_ic; aa.aa_dmat = sc->sc_dmat; aa.aa_dmat64 = sc->sc_dmat64; ad->ad_device = config_found_ia(sc->sc_dev, "acpinodebus", &aa, acpi_print); } } static void acpi_rescan_capabilities(device_t self) { struct acpi_softc *sc = device_private(self); struct acpi_devnode *ad; ACPI_HANDLE tmp; ACPI_STATUS rv; SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) continue; /* * Scan power resource capabilities. * * If any power states are supported, * at least _PR0 and _PR3 must be present. */ rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); if (ACPI_SUCCESS(rv)) { ad->ad_flags |= ACPI_DEVICE_POWER; acpi_power_add(ad); } /* * Scan wake-up capabilities. */ if (ad->ad_wakedev != NULL) { ad->ad_flags |= ACPI_DEVICE_WAKEUP; acpi_wakedev_add(ad); } /* * Scan docking stations. */ rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); if (ACPI_SUCCESS(rv)) ad->ad_flags |= ACPI_DEVICE_DOCK; /* * Scan devices that are ejectable. */ rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); if (ACPI_SUCCESS(rv)) ad->ad_flags |= ACPI_DEVICE_EJECT; } } static int acpi_print(void *aux, const char *pnp) { struct acpi_attach_args *aa = aux; struct acpi_devnode *ad; const char *hid, *uid; ACPI_DEVICE_INFO *di; ad = aa->aa_node; di = ad->ad_devinfo; hid = di->HardwareId.String; uid = di->UniqueId.String; if (pnp != NULL) { if (di->Type != ACPI_TYPE_DEVICE) { aprint_normal("%s (ACPI Object Type '%s') at %s", ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); return UNCONF; } if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) return 0; aprint_normal("%s (%s) ", ad->ad_name, hid); acpi_print_dev(hid); aprint_normal("at %s", pnp); return UNCONF; } aprint_normal(" (%s", ad->ad_name); if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { aprint_normal(", %s", hid); if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { if (uid[0] == '\0') uid = ""; aprint_normal("-%s", uid); } } aprint_normal(")"); return UNCONF; } /* * Notify. */ static void acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) { struct acpi_softc *sc = acpi_softc; struct acpi_devnode *ad; KASSERT(sc != NULL); KASSERT(aux == NULL); KASSERT(acpi_active != 0); if (acpi_suspended != 0) return; /* * System: 0x00 - 0x7F. * Device: 0x80 - 0xFF. */ switch (event) { case ACPI_NOTIFY_BUS_CHECK: case ACPI_NOTIFY_DEVICE_CHECK: case ACPI_NOTIFY_DEVICE_WAKE: case ACPI_NOTIFY_EJECT_REQUEST: case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: case ACPI_NOTIFY_FREQUENCY_MISMATCH: case ACPI_NOTIFY_BUS_MODE_MISMATCH: case ACPI_NOTIFY_POWER_FAULT: case ACPI_NOTIFY_CAPABILITIES_CHECK: case ACPI_NOTIFY_DEVICE_PLD_CHECK: case ACPI_NOTIFY_RESERVED: case ACPI_NOTIFY_LOCALITY_UPDATE: break; } ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " "%s (%p)\n", event, acpi_name(handle), handle)); /* * We deliver notifications only to drivers * that have been successfully attached and * that have registered a handler with us. * The opaque pointer is always the device_t. */ SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { if (ad->ad_device == NULL) continue; if (ad->ad_notify == NULL) continue; if (ad->ad_handle != handle) continue; (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); return; } aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " "for %s (%p)\n", event, acpi_name(handle), handle); } bool acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) { struct acpi_softc *sc = acpi_softc; KASSERT(sc != NULL); KASSERT(acpi_active != 0); if (acpi_suspended != 0) goto fail; if (ad == NULL || notify == NULL) goto fail; ad->ad_notify = notify; return true; fail: aprint_error_dev(sc->sc_dev, "failed to register notify " "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); return false; } void acpi_deregister_notify(struct acpi_devnode *ad) { ad->ad_notify = NULL; } /* * Fixed buttons. */ static void acpi_register_fixed_button(struct acpi_softc *sc, int event) { struct sysmon_pswitch *smpsw; ACPI_STATUS rv; int type; switch (event) { case ACPI_EVENT_POWER_BUTTON: if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) return; type = PSWITCH_TYPE_POWER; smpsw = &sc->sc_smpsw_power; break; case ACPI_EVENT_SLEEP_BUTTON: if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) return; type = PSWITCH_TYPE_SLEEP; smpsw = &sc->sc_smpsw_sleep; break; default: rv = AE_TYPE; goto fail; } smpsw->smpsw_type = type; smpsw->smpsw_name = device_xname(sc->sc_dev); if (sysmon_pswitch_register(smpsw) != 0) { rv = AE_ERROR; goto fail; } AcpiClearEvent(event); rv = AcpiInstallFixedEventHandler(event, acpi_fixed_button_handler, smpsw); if (ACPI_FAILURE(rv)) { sysmon_pswitch_unregister(smpsw); goto fail; } aprint_normal_dev(sc->sc_dev, "fixed %s button present\n", (type != PSWITCH_TYPE_SLEEP) ? "power" : "sleep"); return; fail: aprint_error_dev(sc->sc_dev, "failed to register " "fixed event %d: %s\n", event, AcpiFormatException(rv)); } static void acpi_deregister_fixed_button(struct acpi_softc *sc, int event) { struct sysmon_pswitch *smpsw; ACPI_STATUS rv; switch (event) { case ACPI_EVENT_POWER_BUTTON: smpsw = &sc->sc_smpsw_power; if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); return; } break; case ACPI_EVENT_SLEEP_BUTTON: smpsw = &sc->sc_smpsw_sleep; if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); return; } break; default: rv = AE_TYPE; goto fail; } rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); if (ACPI_SUCCESS(rv)) { sysmon_pswitch_unregister(smpsw); return; } fail: aprint_error_dev(sc->sc_dev, "failed to deregister " "fixed event: %s\n", AcpiFormatException(rv)); } static uint32_t acpi_fixed_button_handler(void *context) { static const int handler = OSL_NOTIFY_HANDLER; struct sysmon_pswitch *smpsw = context; (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); return ACPI_INTERRUPT_HANDLED; } static void acpi_fixed_button_pressed(void *context) { struct sysmon_pswitch *smpsw = context; ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? "power" : "sleep")); sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); } /* * Sleep. */ static void acpi_sleep_init(struct acpi_softc *sc) { uint8_t a, b, i; ACPI_STATUS rv; CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); /* * Evaluate supported sleep states. */ for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { rv = AcpiGetSleepTypeData(i, &a, &b); if (ACPI_SUCCESS(rv)) sc->sc_sleepstates |= __BIT(i); } } /* * Must be called with interrupts enabled. */ void acpi_enter_sleep_state(int state) { struct acpi_softc *sc = acpi_softc; ACPI_STATUS rv; if (acpi_softc == NULL) return; if (state == sc->sc_sleepstate) return; if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) return; aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); switch (state) { case ACPI_STATE_S0: sc->sc_sleepstate = ACPI_STATE_S0; return; case ACPI_STATE_S1: case ACPI_STATE_S2: case ACPI_STATE_S3: case ACPI_STATE_S4: if ((sc->sc_sleepstates & __BIT(state)) == 0) { aprint_error_dev(sc->sc_dev, "sleep state " "S%d is not available\n", state); return; } /* * Evaluate the _TTS method. This should be done before * pmf_system_suspend(9) and the evaluation of _PTS. * We should also re-evaluate this once we return to * S0 or if we abort the sleep state transition in the * middle (see ACPI 3.0, section 7.3.6). In reality, * however, the _TTS method is seldom seen in the field. */ rv = acpi_eval_set_integer(NULL, "\\_TTS", state); if (ACPI_SUCCESS(rv)) aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); if (state != ACPI_STATE_S1 && pmf_system_suspend(PMF_Q_NONE) != true) { aprint_error_dev(sc->sc_dev, "aborting suspend\n"); break; } /* * This will evaluate the _PTS and _SST methods, * but unlike the documentation claims, not _GTS, * which is evaluated in AcpiEnterSleepState(). * This must be called with interrupts enabled. */ rv = AcpiEnterSleepStatePrep(state); if (ACPI_FAILURE(rv)) { aprint_error_dev(sc->sc_dev, "failed to prepare " "S%d: %s\n", state, AcpiFormatException(rv)); break; } /* * After the _PTS method has been evaluated, we can * enable wake and evaluate _PSW (ACPI 4.0, p. 284). */ acpi_wakedev_commit(sc, state); sc->sc_sleepstate = state; if (state == ACPI_STATE_S1) { /* * Before the transition to S1, CPU caches * must be flushed (see ACPI 4.0, 7.3.4.2). * * Note that interrupts must be off before * calling AcpiEnterSleepState(). Conversely, * AcpiLeaveSleepState() should always be * called with interrupts enabled. */ acpi_md_OsDisableInterrupt(); ACPI_FLUSH_CPU_CACHE(); rv = AcpiEnterSleepState(state); if (ACPI_FAILURE(rv)) aprint_error_dev(sc->sc_dev, "failed to " "enter S1: %s\n", AcpiFormatException(rv)); /* * Clear fixed events and disable all GPEs before * interrupts are enabled. */ AcpiClearEvent(ACPI_EVENT_PMTIMER); AcpiClearEvent(ACPI_EVENT_GLOBAL); AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); AcpiClearEvent(ACPI_EVENT_RTC); #if (!ACPI_REDUCED_HARDWARE) AcpiHwDisableAllGpes(); #endif acpi_md_OsEnableInterrupt(); rv = AcpiLeaveSleepState(state); } else { (void)acpi_md_sleep(state); if (state == ACPI_STATE_S4) AcpiEnable(); (void)pmf_system_bus_resume(PMF_Q_NONE); (void)AcpiLeaveSleepState(state); (void)AcpiSetFirmwareWakingVector(0, 0); (void)pmf_system_resume(PMF_Q_NONE); } /* * No wake GPEs should be enabled at runtime. */ acpi_wakedev_commit(sc, ACPI_STATE_S0); break; case ACPI_STATE_S5: (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); if (ACPI_FAILURE(rv)) { aprint_error_dev(sc->sc_dev, "failed to prepare " "S%d: %s\n", state, AcpiFormatException(rv)); break; } (void)AcpiDisableAllGpes(); DELAY(1000000); sc->sc_sleepstate = state; acpi_md_OsDisableInterrupt(); (void)AcpiEnterSleepState(ACPI_STATE_S5); aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); break; } sc->sc_sleepstate = ACPI_STATE_S0; (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); } /* * Sysctl. */ SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") { const struct sysctlnode *rnode, *snode; int err; err = sysctl_createv(clog, 0, NULL, &rnode, CTLFLAG_PERMANENT, CTLTYPE_NODE, "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL); if (err != 0) return; (void)sysctl_createv(NULL, 0, &rnode, NULL, CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, "root", SYSCTL_DESCR("ACPI root pointer"), NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), CTL_CREATE, CTL_EOL); err = sysctl_createv(clog, 0, &rnode, &snode, CTLFLAG_PERMANENT, CTLTYPE_NODE, "sleep", SYSCTL_DESCR("ACPI sleep"), NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL); if (err != 0) return; (void)sysctl_createv(NULL, 0, &snode, NULL, CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, "state", SYSCTL_DESCR("System sleep state"), sysctl_hw_acpi_sleepstate, 0, NULL, 0, CTL_CREATE, CTL_EOL); (void)sysctl_createv(NULL, 0, &snode, NULL, CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, "states", SYSCTL_DESCR("Supported sleep states"), sysctl_hw_acpi_sleepstates, 0, NULL, 0, CTL_CREATE, CTL_EOL); err = sysctl_createv(clog, 0, &rnode, &rnode, CTLFLAG_PERMANENT, CTLTYPE_NODE, "stat", SYSCTL_DESCR("ACPI statistics"), NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL); if (err != 0) return; (void)sysctl_createv(clog, 0, &rnode, NULL, CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), CTL_CREATE, CTL_EOL); (void)sysctl_createv(clog, 0, &rnode, NULL, CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, "sci", SYSCTL_DESCR("Number of SCI interrupts"), NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), CTL_CREATE, CTL_EOL); (void)sysctl_createv(clog, 0, &rnode, NULL, CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, "fixed", SYSCTL_DESCR("Number of fixed events"), sysctl_hw_acpi_fixedstats, 0, NULL, 0, CTL_CREATE, CTL_EOL); (void)sysctl_createv(clog, 0, &rnode, NULL, CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, "method", SYSCTL_DESCR("Number of methods executed"), NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), CTL_CREATE, CTL_EOL); CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); } static int sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) { struct sysctlnode node; uint64_t t; int err, i; for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) t += AcpiFixedEventCount[i]; node = *rnode; node.sysctl_data = &t; err = sysctl_lookup(SYSCTLFN_CALL(&node)); if (err || newp == NULL) return err; return 0; } static int sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) { struct acpi_softc *sc = acpi_softc; struct sysctlnode node; int err, t; if (acpi_softc == NULL) return ENOSYS; node = *rnode; t = sc->sc_sleepstate; node.sysctl_data = &t; err = sysctl_lookup(SYSCTLFN_CALL(&node)); if (err || newp == NULL) return err; if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) return EINVAL; acpi_enter_sleep_state(t); return 0; } static int sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) { struct acpi_softc *sc = acpi_softc; struct sysctlnode node; char t[3 * 6 + 1]; int err; if (acpi_softc == NULL) return ENOSYS; (void)memset(t, '\0', sizeof(t)); (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); node = *rnode; node.sysctl_data = &t; err = sysctl_lookup(SYSCTLFN_CALL(&node)); if (err || newp == NULL) return err; return 0; } /* * Tables. */ ACPI_PHYSICAL_ADDRESS acpi_OsGetRootPointer(void) { ACPI_PHYSICAL_ADDRESS PhysicalAddress; /* * We let MD code handle this since there are multiple ways to do it: * * IA-32: Use AcpiFindRootPointer() to locate the RSDP. * * IA-64: Use the EFI. */ PhysicalAddress = acpi_md_OsGetRootPointer(); if (acpi_root_pointer == 0) acpi_root_pointer = PhysicalAddress; return PhysicalAddress; } static ACPI_TABLE_HEADER * acpi_map_rsdt(void) { ACPI_PHYSICAL_ADDRESS paddr; ACPI_TABLE_RSDP *rsdp; paddr = AcpiOsGetRootPointer(); if (paddr == 0) return NULL; rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); if (rsdp == NULL) return NULL; if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) paddr = rsdp->XsdtPhysicalAddress; else paddr = rsdp->RsdtPhysicalAddress; AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); } /* * XXX: Refactor to be a generic function that unmaps tables. */ static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) { if (rsdt == NULL) return; AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); } /* * XXX: Refactor to be a generic function that maps tables. */ ACPI_STATUS acpi_madt_map(void) { ACPI_STATUS rv; if (madt_header != NULL) return AE_ALREADY_EXISTS; rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); if (ACPI_FAILURE(rv)) return rv; return AE_OK; } void acpi_madt_unmap(void) { madt_header = NULL; } ACPI_STATUS acpi_gtdt_map(void) { ACPI_STATUS rv; if (gtdt_header != NULL) return AE_ALREADY_EXISTS; rv = AcpiGetTable(ACPI_SIG_GTDT, 1, >dt_header); if (ACPI_FAILURE(rv)) return rv; return AE_OK; } void acpi_gtdt_unmap(void) { gtdt_header = NULL; } /* * XXX: Refactor to be a generic function that walks tables. */ void acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) { ACPI_SUBTABLE_HEADER *hdrp; char *madtend, *where; madtend = (char *)madt_header + madt_header->Length; where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); while (where < madtend) { hdrp = (ACPI_SUBTABLE_HEADER *)where; if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux))) break; where += hdrp->Length; } } void acpi_gtdt_walk(ACPI_STATUS (*func)(ACPI_GTDT_HEADER *, void *), void *aux) { ACPI_GTDT_HEADER *hdrp; char *gtdtend, *where; gtdtend = (char *)gtdt_header + gtdt_header->Length; where = (char *)gtdt_header + sizeof (ACPI_TABLE_GTDT); while (where < gtdtend) { hdrp = (ACPI_GTDT_HEADER *)where; if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux))) break; where += hdrp->Length; } } /* * Miscellaneous. */ static bool acpi_is_scope(struct acpi_devnode *ad) { int i; /* * Return true if the node is a root scope. */ if (ad->ad_parent == NULL) return false; if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) return false; for (i = 0; i < __arraycount(acpi_scopes); i++) { if (acpi_scopes[i] == NULL) continue; if (ad->ad_handle == acpi_scopes[i]) return true; } return false; } bool acpi_device_present(ACPI_HANDLE handle) { ACPI_STATUS rv; ACPI_INTEGER sta; rv = acpi_eval_integer(handle, "_STA", &sta); if (ACPI_FAILURE(rv)) { /* No _STA method -> must be there */ return rv == AE_NOT_FOUND; } return (sta & ACPI_STA_OK) == ACPI_STA_OK; } /* * ACPIVERBOSE. */ void acpi_load_verbose(void) { if (acpi_verbose_loaded == 0) module_autoload("acpiverbose", MODULE_CLASS_MISC); } void acpi_print_verbose_stub(struct acpi_softc *sc) { acpi_load_verbose(); if (acpi_verbose_loaded != 0) acpi_print_verbose(sc); } void acpi_print_dev_stub(const char *pnpstr) { acpi_load_verbose(); if (acpi_verbose_loaded != 0) acpi_print_dev(pnpstr); } MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ /* * ACPI_ACTIVATE_DEV. */ static void acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) { #ifndef ACPI_ACTIVATE_DEV return; } #else static const int valid = ACPI_VALID_HID; ACPI_DEVICE_INFO *newdi; ACPI_STATUS rv; /* * If the device is valid and present, * but not enabled, try to activate it. */ if (((*di)->Valid & valid) != valid) return; if (!acpi_device_present(handle)) return; rv = acpi_allocate_resources(handle); if (ACPI_FAILURE(rv)) goto fail; rv = AcpiGetObjectInfo(handle, &newdi); if (ACPI_FAILURE(rv)) goto fail; ACPI_FREE(*di); *di = newdi; aprint_verbose_dev(acpi_softc->sc_dev, "%s activated\n", (*di)->HardwareId.String); return; fail: aprint_error_dev(acpi_softc->sc_dev, "failed to " "activate %s\n", (*di)->HardwareId.String); } /* * XXX: This very incomplete. */ ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE handle) { ACPI_BUFFER bufp, bufc, bufn; ACPI_RESOURCE *resp, *resc, *resn; ACPI_RESOURCE_IRQ *irq; #if 0 ACPI_RESOURCE_EXTENDED_IRQ *xirq; #endif ACPI_STATUS rv; uint delta; rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); if (ACPI_FAILURE(rv)) goto out; rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); if (ACPI_FAILURE(rv)) { goto out1; } bufn.Length = 1000; bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); resp = bufp.Pointer; resc = bufc.Pointer; while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) resp = ACPI_NEXT_RESOURCE(resp); if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) break; /* Found identical Id */ resn->Type = resc->Type; switch (resc->Type) { case ACPI_RESOURCE_TYPE_IRQ: memcpy(&resn->Data, &resp->Data, sizeof(ACPI_RESOURCE_IRQ)); irq = (ACPI_RESOURCE_IRQ *)&resn->Data; irq->Interrupts[0] = ((ACPI_RESOURCE_IRQ *)&resp->Data)-> Interrupts[irq->InterruptCount-1]; irq->InterruptCount = 1; resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); break; case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: memcpy(&resn->Data, &resp->Data, sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); #if 0 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; /* * XXX: Not duplicating the interrupt logic above * because its not clear what it accomplishes. */ xirq->Interrupts[0] = ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> Interrupts[irq->NumberOfInterrupts-1]; xirq->NumberOfInterrupts = 1; #endif resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); break; case ACPI_RESOURCE_TYPE_IO: memcpy(&resn->Data, &resp->Data, sizeof(ACPI_RESOURCE_IO)); resn->Length = resp->Length; break; default: aprint_error_dev(acpi_softc->sc_dev, "%s: invalid type %u\n", __func__, resc->Type); rv = AE_BAD_DATA; goto out2; } resc = ACPI_NEXT_RESOURCE(resc); resn = ACPI_NEXT_RESOURCE(resn); resp = ACPI_NEXT_RESOURCE(resp); delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; if (delta >= bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { bufn.Length *= 2; bufn.Pointer = realloc(bufn.Pointer, bufn.Length, M_ACPI, M_WAITOK); resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + delta); } } if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { aprint_error_dev(acpi_softc->sc_dev, "%s: resc not exhausted\n", __func__); rv = AE_BAD_DATA; goto out3; } resn->Type = ACPI_RESOURCE_TYPE_END_TAG; rv = AcpiSetCurrentResources(handle, &bufn); if (ACPI_FAILURE(rv)) aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " "resources: %s\n", __func__, AcpiFormatException(rv)); out3: free(bufn.Pointer, M_ACPI); out2: ACPI_FREE(bufc.Pointer); out1: ACPI_FREE(bufp.Pointer); out: return rv; } #endif /* ACPI_ACTIVATE_DEV */