/* $OpenBSD: acpi.c,v 1.341 2018/03/27 21:11:16 kettenis Exp $ */ /* * Copyright (c) 2005 Thorsten Lockert * Copyright (c) 2005 Jordan Hargrave * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HIBERNATE #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define APMUNIT(dev) (minor(dev)&0xf0) #define APMDEV(dev) (minor(dev)&0x0f) #define APMDEV_NORMAL 0 #define APMDEV_CTL 8 #include "wd.h" #include "wsdisplay.h" #include "softraid.h" #ifdef ACPI_DEBUG int acpi_debug = 16; #endif int acpi_poll_enabled; int acpi_hasprocfvs; #define ACPIEN_RETRIES 15 struct aml_node *acpi_pci_match(struct device *, struct pci_attach_args *); pcireg_t acpi_pci_min_powerstate(pci_chipset_tag_t, pcitag_t); void acpi_pci_set_powerstate(pci_chipset_tag_t, pcitag_t, int, int); int acpi_pci_notify(struct aml_node *, int, void *); int acpi_match(struct device *, void *, void *); void acpi_attach(struct device *, struct device *, void *); int acpi_submatch(struct device *, void *, void *); int acpi_print(void *, const char *); void acpi_map_pmregs(struct acpi_softc *); void acpi_unmap_pmregs(struct acpi_softc *); int acpi_loadtables(struct acpi_softc *, struct acpi_rsdp *); int _acpi_matchhids(const char *, const char *[]); int acpi_inidev(struct aml_node *, void *); int acpi_foundprt(struct aml_node *, void *); int acpi_enable(struct acpi_softc *); void acpi_init_states(struct acpi_softc *); void acpi_gpe_task(void *, int); void acpi_sbtn_task(void *, int); void acpi_pbtn_task(void *, int); int acpi_enabled; void acpi_init_gpes(struct acpi_softc *); void acpi_disable_allgpes(struct acpi_softc *); struct gpe_block *acpi_find_gpe(struct acpi_softc *, int); void acpi_enable_onegpe(struct acpi_softc *, int); int acpi_gpe(struct acpi_softc *, int, void *); void acpi_enable_rungpes(struct acpi_softc *); void acpi_enable_wakegpes(struct acpi_softc *, int); int acpi_foundec(struct aml_node *, void *); int acpi_foundsony(struct aml_node *node, void *arg); int acpi_foundhid(struct aml_node *, void *); int acpi_add_device(struct aml_node *node, void *arg); void acpi_thread(void *); void acpi_create_thread(void *); #ifndef SMALL_KERNEL void acpi_indicator(struct acpi_softc *, int); int acpi_matchhids(struct acpi_attach_args *aa, const char *hids[], const char *driver); void acpi_init_pm(struct acpi_softc *); int acpi_founddock(struct aml_node *, void *); int acpi_foundpss(struct aml_node *, void *); int acpi_foundtmp(struct aml_node *, void *); int acpi_foundprw(struct aml_node *, void *); int acpi_foundvideo(struct aml_node *, void *); int acpi_foundsbs(struct aml_node *node, void *); int acpi_foundide(struct aml_node *node, void *arg); int acpiide_notify(struct aml_node *, int, void *); void wdcattach(struct channel_softc *); int wdcdetach(struct channel_softc *, int); int is_ejectable_bay(struct aml_node *node); int is_ata(struct aml_node *node); int is_ejectable(struct aml_node *node); struct idechnl { struct acpi_softc *sc; int64_t addr; int64_t chnl; int64_t sta; }; /* * This is a list of Synaptics devices with a 'top button area' * based on the list in Linux supplied by Synaptics * Synaptics clickpads with the following pnp ids will get a unique * wscons mouse type that is used to define trackpad regions that will * emulate mouse buttons */ static const char *sbtn_pnp[] = { "LEN0017", "LEN0018", "LEN0019", "LEN0023", "LEN002A", "LEN002B", "LEN002C", "LEN002D", "LEN002E", "LEN0033", "LEN0034", "LEN0035", "LEN0036", "LEN0037", "LEN0038", "LEN0039", "LEN0041", "LEN0042", "LEN0045", "LEN0047", "LEN0049", "LEN2000", "LEN2001", "LEN2002", "LEN2003", "LEN2004", "LEN2005", "LEN2006", "LEN2007", "LEN2008", "LEN2009", "LEN200A", "LEN200B", }; int mouse_has_softbtn; #endif /* SMALL_KERNEL */ /* XXX move this into dsdt softc at some point */ extern struct aml_node aml_root; struct cfattach acpi_ca = { sizeof(struct acpi_softc), acpi_match, acpi_attach }; struct cfdriver acpi_cd = { NULL, "acpi", DV_DULL }; struct acpi_softc *acpi_softc; #define acpi_bus_space_map _bus_space_map #define acpi_bus_space_unmap _bus_space_unmap uint8_t acpi_pci_conf_read_1(pci_chipset_tag_t pc, pcitag_t tag, int reg) { uint32_t val = pci_conf_read(pc, tag, reg & ~0x3); return (val >> ((reg & 0x3) << 3)); } uint16_t acpi_pci_conf_read_2(pci_chipset_tag_t pc, pcitag_t tag, int reg) { uint32_t val = pci_conf_read(pc, tag, reg & ~0x2); return (val >> ((reg & 0x2) << 3)); } uint32_t acpi_pci_conf_read_4(pci_chipset_tag_t pc, pcitag_t tag, int reg) { return pci_conf_read(pc, tag, reg); } void acpi_pci_conf_write_1(pci_chipset_tag_t pc, pcitag_t tag, int reg, uint8_t val) { uint32_t tmp = pci_conf_read(pc, tag, reg & ~0x3); tmp &= ~(0xff << ((reg & 0x3) << 3)); tmp |= (val << ((reg & 0x3) << 3)); pci_conf_write(pc, tag, reg & ~0x3, tmp); } void acpi_pci_conf_write_2(pci_chipset_tag_t pc, pcitag_t tag, int reg, uint16_t val) { uint32_t tmp = pci_conf_read(pc, tag, reg & ~0x2); tmp &= ~(0xffff << ((reg & 0x2) << 3)); tmp |= (val << ((reg & 0x2) << 3)); pci_conf_write(pc, tag, reg & ~0x2, tmp); } void acpi_pci_conf_write_4(pci_chipset_tag_t pc, pcitag_t tag, int reg, uint32_t val) { pci_conf_write(pc, tag, reg, val); } int acpi_gasio(struct acpi_softc *sc, int iodir, int iospace, uint64_t address, int access_size, int len, void *buffer) { u_int8_t *pb; bus_space_tag_t iot; bus_space_handle_t ioh; pci_chipset_tag_t pc; pcitag_t tag; int reg, idx; dnprintf(50, "gasio: %.2x 0x%.8llx %s\n", iospace, address, (iodir == ACPI_IOWRITE) ? "write" : "read"); KASSERT((len % access_size) == 0); pb = (u_int8_t *)buffer; switch (iospace) { case GAS_SYSTEM_MEMORY: case GAS_SYSTEM_IOSPACE: if (iospace == GAS_SYSTEM_MEMORY) iot = sc->sc_memt; else iot = sc->sc_iot; if (acpi_bus_space_map(iot, address, len, 0, &ioh) != 0) { printf("%s: unable to map iospace\n", DEVNAME(sc)); return (-1); } for (reg = 0; reg < len; reg += access_size) { if (iodir == ACPI_IOREAD) { switch (access_size) { case 1: *(uint8_t *)(pb + reg) = bus_space_read_1(iot, ioh, reg); dnprintf(80, "os_in8(%llx) = %x\n", reg+address, *(uint8_t *)(pb+reg)); break; case 2: *(uint16_t *)(pb + reg) = bus_space_read_2(iot, ioh, reg); dnprintf(80, "os_in16(%llx) = %x\n", reg+address, *(uint16_t *)(pb+reg)); break; case 4: *(uint32_t *)(pb + reg) = bus_space_read_4(iot, ioh, reg); break; default: printf("%s: rdio: invalid size %d\n", DEVNAME(sc), access_size); return (-1); } } else { switch (access_size) { case 1: bus_space_write_1(iot, ioh, reg, *(uint8_t *)(pb + reg)); dnprintf(80, "os_out8(%llx,%x)\n", reg+address, *(uint8_t *)(pb+reg)); break; case 2: bus_space_write_2(iot, ioh, reg, *(uint16_t *)(pb + reg)); dnprintf(80, "os_out16(%llx,%x)\n", reg+address, *(uint16_t *)(pb+reg)); break; case 4: bus_space_write_4(iot, ioh, reg, *(uint32_t *)(pb + reg)); break; default: printf("%s: wrio: invalid size %d\n", DEVNAME(sc), access_size); return (-1); } } } acpi_bus_space_unmap(iot, ioh, len, NULL); break; case GAS_PCI_CFG_SPACE: /* format of address: * bits 00..15 = register * bits 16..31 = function * bits 32..47 = device * bits 48..63 = bus */ /* * The ACPI standard says that a function number of * FFFF can be used to refer to all functions on a * device. This makes no sense though in the context * of accessing PCI config space. Yet there is AML * out there that does this. We simulate a read from * a nonexistent device here. Writes will panic when * we try to construct the tag below. */ if (ACPI_PCI_FN(address) == 0xffff && iodir == ACPI_IOREAD) { memset(buffer, 0xff, len); return (0); } pc = NULL; tag = pci_make_tag(pc, ACPI_PCI_BUS(address), ACPI_PCI_DEV(address), ACPI_PCI_FN(address)); reg = ACPI_PCI_REG(address); for (idx = 0; idx < len; idx += access_size) { if (iodir == ACPI_IOREAD) { switch (access_size) { case 1: *(uint8_t *)(pb + idx) = acpi_pci_conf_read_1(pc, tag, reg + idx); break; case 2: *(uint16_t *)(pb + idx) = acpi_pci_conf_read_2(pc, tag, reg + idx); break; case 4: *(uint32_t *)(pb + idx) = acpi_pci_conf_read_4(pc, tag, reg + idx); break; default: printf("%s: rdcfg: invalid size %d\n", DEVNAME(sc), access_size); return (-1); } } else { switch (access_size) { case 1: acpi_pci_conf_write_1(pc, tag, reg + idx, *(uint8_t *)(pb + idx)); break; case 2: acpi_pci_conf_write_2(pc, tag, reg + idx, *(uint16_t *)(pb + idx)); break; case 4: acpi_pci_conf_write_4(pc, tag, reg + idx, *(uint32_t *)(pb + idx)); break; default: printf("%s: wrcfg: invalid size %d\n", DEVNAME(sc), access_size); return (-1); } } } break; case GAS_EMBEDDED: if (sc->sc_ec == NULL) { printf("%s: WARNING EC not initialized\n", DEVNAME(sc)); return (-1); } if (iodir == ACPI_IOREAD) acpiec_read(sc->sc_ec, (u_int8_t)address, len, buffer); else acpiec_write(sc->sc_ec, (u_int8_t)address, len, buffer); break; } return (0); } int acpi_inidev(struct aml_node *node, void *arg) { struct acpi_softc *sc = (struct acpi_softc *)arg; int64_t st; /* * Per the ACPI spec 6.5.1, only run _INI when device is there or * when there is no _STA. We terminate the tree walk (with return 1) * early if necessary. */ /* Evaluate _STA to decide _INI fate and walk fate */ if (aml_evalinteger(sc, node->parent, "_STA", 0, NULL, &st)) st = STA_PRESENT | STA_ENABLED | STA_DEV_OK | 0x1000; /* Evaluate _INI if we are present */ if (st & STA_PRESENT) aml_evalnode(sc, node, 0, NULL, NULL); /* If we are functioning, we walk/search our children */ if (st & STA_DEV_OK) return 0; /* If we are not enabled, or not present, terminate search */ if (!(st & (STA_PRESENT|STA_ENABLED))) return 1; /* Default just continue search */ return 0; } int acpi_foundprt(struct aml_node *node, void *arg) { struct acpi_softc *sc = (struct acpi_softc *)arg; struct device *self = (struct device *)arg; struct acpi_attach_args aaa; int64_t st = 0; dnprintf(10, "found prt entry: %s\n", node->parent->name); /* Evaluate _STA to decide _PRT fate and walk fate */ if (aml_evalinteger(sc, node->parent, "_STA", 0, NULL, &st)) st = STA_PRESENT | STA_ENABLED | STA_DEV_OK | 0x1000; if (st & STA_PRESENT) { memset(&aaa, 0, sizeof(aaa)); aaa.aaa_iot = sc->sc_iot; aaa.aaa_memt = sc->sc_memt; aaa.aaa_node = node; aaa.aaa_name = "acpiprt"; config_found(self, &aaa, acpi_print); } /* If we are functioning, we walk/search our children */ if (st & STA_DEV_OK) return 0; /* If we are not enabled, or not present, terminate search */ if (!(st & (STA_PRESENT|STA_ENABLED))) return 1; /* Default just continue search */ return 0; } int acpi_match(struct device *parent, void *match, void *aux) { struct bios_attach_args *ba = aux; struct cfdata *cf = match; /* sanity */ if (strcmp(ba->ba_name, cf->cf_driver->cd_name)) return (0); if (!acpi_probe(parent, cf, ba)) return (0); return (1); } TAILQ_HEAD(, acpi_pci) acpi_pcidevs = TAILQ_HEAD_INITIALIZER(acpi_pcidevs); TAILQ_HEAD(, acpi_pci) acpi_pcirootdevs = TAILQ_HEAD_INITIALIZER(acpi_pcirootdevs); int acpi_getpci(struct aml_node *node, void *arg); int acpi_getminbus(int crsidx, union acpi_resource *crs, void *arg); int acpi_getminbus(int crsidx, union acpi_resource *crs, void *arg) { int *bbn = arg; int typ = AML_CRSTYPE(crs); /* Check for embedded bus number */ if (typ == LR_WORD && crs->lr_word.type == 2) { /* If _MIN > _MAX, the resource is considered to be invalid. */ if (crs->lr_word._min > crs->lr_word._max) return -1; *bbn = crs->lr_word._min; } return 0; } int _acpi_matchhids(const char *hid, const char *hids[]) { int i; for (i = 0; hids[i]; i++) if (!strcmp(hid, hids[i])) return (1); return (0); } int acpi_matchhids(struct acpi_attach_args *aa, const char *hids[], const char *driver) { if (aa->aaa_dev == NULL || aa->aaa_node == NULL) return (0); if (_acpi_matchhids(aa->aaa_dev, hids)) { dnprintf(5, "driver %s matches at least one hid\n", driver); return (1); } return (0); } /* Map ACPI device node to PCI */ int acpi_getpci(struct aml_node *node, void *arg) { const char *pcihid[] = { ACPI_DEV_PCIB, ACPI_DEV_PCIEB, "HWP0002", 0 }; struct acpi_pci *pci, *ppci; struct aml_value res; struct acpi_softc *sc = arg; pci_chipset_tag_t pc = NULL; pcitag_t tag; uint64_t val; uint32_t reg; if (!node->value || node->value->type != AML_OBJTYPE_DEVICE) return 0; if (!aml_evalhid(node, &res)) { /* Check if this is a PCI Root node */ if (_acpi_matchhids(res.v_string, pcihid)) { aml_freevalue(&res); pci = malloc(sizeof(*pci), M_DEVBUF, M_WAITOK|M_ZERO); pci->bus = -1; if (!aml_evalinteger(sc, node, "_SEG", 0, NULL, &val)) pci->seg = val; if (!aml_evalname(sc, node, "_CRS", 0, NULL, &res)) { aml_parse_resource(&res, acpi_getminbus, &pci->bus); dnprintf(10, "%s post-crs: %d\n", aml_nodename(node), pci->bus); } if (!aml_evalinteger(sc, node, "_BBN", 0, NULL, &val)) { dnprintf(10, "%s post-bbn: %d, %lld\n", aml_nodename(node), pci->bus, val); if (pci->bus == -1) pci->bus = val; } pci->sub = pci->bus; node->pci = pci; dnprintf(10, "found PCI root: %s %d\n", aml_nodename(node), pci->bus); TAILQ_INSERT_TAIL(&acpi_pcirootdevs, pci, next); } aml_freevalue(&res); return 0; } /* If parent is not PCI, or device does not have _ADR, return */ if (!node->parent || (ppci = node->parent->pci) == NULL) return 0; if (aml_evalinteger(sc, node, "_ADR", 0, NULL, &val)) return 0; pci = malloc(sizeof(*pci), M_DEVBUF, M_WAITOK|M_ZERO); pci->bus = ppci->sub; pci->dev = ACPI_ADR_PCIDEV(val); pci->fun = ACPI_ADR_PCIFUN(val); pci->node = node; pci->sub = -1; dnprintf(10, "%.2x:%.2x.%x -> %s\n", pci->bus, pci->dev, pci->fun, aml_nodename(node)); /* Collect device power state information. */ if (aml_evalinteger(sc, node, "_S3D", 0, NULL, &val) == 0) pci->_s3d = val; else pci->_s3d = -1; if (aml_evalinteger(sc, node, "_S3W", 0, NULL, &val) == 0) pci->_s3w = val; else pci->_s3w = -1; if (aml_evalinteger(sc, node, "_S4D", 0, NULL, &val) == 0) pci->_s4d = val; else pci->_s4d = -1; if (aml_evalinteger(sc, node, "_S4W", 0, NULL, &val) == 0) pci->_s4w = val; else pci->_s4w = -1; /* Check if PCI device exists */ if (pci->dev > 0x1F || pci->fun > 7) { free(pci, M_DEVBUF, sizeof(*pci)); return (1); } tag = pci_make_tag(pc, pci->bus, pci->dev, pci->fun); reg = pci_conf_read(pc, tag, PCI_ID_REG); if (PCI_VENDOR(reg) == PCI_VENDOR_INVALID) { free(pci, M_DEVBUF, sizeof(*pci)); return (1); } node->pci = pci; TAILQ_INSERT_TAIL(&acpi_pcidevs, pci, next); /* Check if this is a PCI bridge */ reg = pci_conf_read(pc, tag, PCI_CLASS_REG); if (PCI_CLASS(reg) == PCI_CLASS_BRIDGE && PCI_SUBCLASS(reg) == PCI_SUBCLASS_BRIDGE_PCI) { reg = pci_conf_read(pc, tag, PPB_REG_BUSINFO); pci->sub = PPB_BUSINFO_SECONDARY(reg); dnprintf(10, "found PCI bridge: %s %d\n", aml_nodename(node), pci->sub); /* Continue scanning */ return (0); } /* Device does not have children, stop scanning */ return (1); } struct aml_node * acpi_pci_match(struct device *dev, struct pci_attach_args *pa) { struct acpi_pci *pdev; int state; TAILQ_FOREACH(pdev, &acpi_pcidevs, next) { if (pdev->bus != pa->pa_bus || pdev->dev != pa->pa_device || pdev->fun != pa->pa_function) continue; dnprintf(10,"%s at acpi0 %s\n", dev->dv_xname, aml_nodename(pdev->node)); pdev->device = dev; /* * If some Power Resources are dependent on this device * initialize them. */ state = pci_get_powerstate(pa->pa_pc, pa->pa_tag); acpi_pci_set_powerstate(pa->pa_pc, pa->pa_tag, state, 1); acpi_pci_set_powerstate(pa->pa_pc, pa->pa_tag, state, 0); aml_register_notify(pdev->node, NULL, acpi_pci_notify, pdev, 0); return pdev->node; } return NULL; } pcireg_t acpi_pci_min_powerstate(pci_chipset_tag_t pc, pcitag_t tag) { struct acpi_pci *pdev; int bus, dev, fun; int state = -1, defaultstate = pci_get_powerstate(pc, tag); pci_decompose_tag(pc, tag, &bus, &dev, &fun); TAILQ_FOREACH(pdev, &acpi_pcidevs, next) { if (pdev->bus == bus && pdev->dev == dev && pdev->fun == fun) { switch (acpi_softc->sc_state) { case ACPI_STATE_S3: defaultstate = PCI_PMCSR_STATE_D3; state = MAX(pdev->_s3d, pdev->_s3w); break; case ACPI_STATE_S4: state = MAX(pdev->_s4d, pdev->_s4w); break; case ACPI_STATE_S5: default: break; } if (state >= PCI_PMCSR_STATE_D0 && state <= PCI_PMCSR_STATE_D3) return state; } } return defaultstate; } void acpi_pci_set_powerstate(pci_chipset_tag_t pc, pcitag_t tag, int state, int pre) { #if NACPIPWRRES > 0 struct acpi_softc *sc = acpi_softc; struct acpi_pwrres *pr; struct acpi_pci *pdev; int bus, dev, fun; char name[5]; pci_decompose_tag(pc, tag, &bus, &dev, &fun); TAILQ_FOREACH(pdev, &acpi_pcidevs, next) { if (pdev->bus == bus && pdev->dev == dev && pdev->fun == fun) break; } /* XXX Add a check to discard nodes without Power Resources? */ if (pdev == NULL) return; SIMPLEQ_FOREACH(pr, &sc->sc_pwrresdevs, p_next) { if (pr->p_node != pdev->node) continue; /* * If the firmware is already aware that the device * is in the given state, there's nothing to do. */ if (pr->p_state == state) continue; if (pre) { /* * If a Resource is dependent on this device for * the given state, make sure it is turned "_ON". */ if (pr->p_res_state == state) acpipwrres_ref_incr(pr->p_res_sc, pr->p_node); } else { /* * If a Resource was referenced for the state we * left, drop a reference and turn it "_OFF" if * it was the last one. */ if (pr->p_res_state == pr->p_state) acpipwrres_ref_decr(pr->p_res_sc, pr->p_node); if (pr->p_res_state == state) { snprintf(name, sizeof(name), "_PS%d", state); aml_evalname(sc, pr->p_node, name, 0, NULL, NULL); } pr->p_state = state; } } #endif /* NACPIPWRRES > 0 */ } int acpi_pci_notify(struct aml_node *node, int ntype, void *arg) { struct acpi_pci *pdev = arg; pci_chipset_tag_t pc = NULL; pcitag_t tag; pcireg_t reg; int offset; /* We're only interested in Device Wake notifications. */ if (ntype != 2) return (0); tag = pci_make_tag(pc, pdev->bus, pdev->dev, pdev->fun); if (pci_get_capability(pc, tag, PCI_CAP_PWRMGMT, &offset, 0)) { /* Clear the PME Status bit if it is set. */ reg = pci_conf_read(pc, tag, offset + PCI_PMCSR); pci_conf_write(pc, tag, offset + PCI_PMCSR, reg); } return (0); } void acpi_pciroots_attach(struct device *dev, void *aux, cfprint_t pr) { struct acpi_pci *pdev; struct pcibus_attach_args *pba = aux; KASSERT(pba->pba_busex != NULL); TAILQ_FOREACH(pdev, &acpi_pcirootdevs, next) { if (extent_alloc_region(pba->pba_busex, pdev->bus, 1, EX_NOWAIT) != 0) continue; pba->pba_bus = pdev->bus; config_found(dev, pba, pr); } } /* GPIO support */ struct acpi_gpio_event { struct aml_node *node; uint16_t pin; }; void acpi_gpio_event_task(void *arg0, int arg1) { struct aml_node *node = arg0; uint16_t pin = arg1; char name[5]; snprintf(name, sizeof(name), "_E%.2X", pin); aml_evalname(acpi_softc, node, name, 0, NULL, NULL); } int acpi_gpio_event(void *arg) { struct acpi_gpio_event *ev = arg; acpi_addtask(acpi_softc, acpi_gpio_event_task, ev->node, ev->pin); return 1; } int acpi_gpio_parse_events(int crsidx, union acpi_resource *crs, void *arg) { struct aml_node *devnode = arg; struct aml_node *node; uint16_t pin; switch (AML_CRSTYPE(crs)) { case LR_GPIO: node = aml_searchname(devnode, (char *)&crs->pad[crs->lr_gpio.res_off]); pin = *(uint16_t *)&crs->pad[crs->lr_gpio.pin_off]; if (crs->lr_gpio.type == LR_GPIO_INT && node && node->gpio && pin < 256) { struct acpi_gpio *gpio = node->gpio; struct acpi_gpio_event *ev; ev = malloc(sizeof(*ev), M_DEVBUF, M_WAITOK); ev->node = devnode; ev->pin = pin; gpio->intr_establish(gpio->cookie, pin, crs->lr_gpio.tflags, acpi_gpio_event, ev); } break; default: printf("%s: unknown resource type %d\n", __func__, AML_CRSTYPE(crs)); } return 0; } void acpi_register_gpio(struct acpi_softc *sc, struct aml_node *devnode) { struct aml_value arg[2]; struct aml_node *node; struct aml_value res; /* Register GeneralPurposeIO address space. */ memset(&arg, 0, sizeof(arg)); arg[0].type = AML_OBJTYPE_INTEGER; arg[0].v_integer = ACPI_OPREG_GPIO; arg[1].type = AML_OBJTYPE_INTEGER; arg[1].v_integer = 1; node = aml_searchname(devnode, "_REG"); if (node && aml_evalnode(sc, node, 2, arg, NULL)) printf("%s: _REG failed\n", node->name); /* Register GPIO signaled ACPI events. */ if (aml_evalname(sc, devnode, "_AEI", 0, NULL, &res)) return; aml_parse_resource(&res, acpi_gpio_parse_events, devnode); } void acpi_attach(struct device *parent, struct device *self, void *aux) { struct bios_attach_args *ba = aux; struct acpi_softc *sc = (struct acpi_softc *)self; struct acpi_mem_map handle; struct acpi_rsdp *rsdp; struct acpi_q *entry; struct acpi_dsdt *p_dsdt; #ifndef SMALL_KERNEL int wakeup_dev_ct; struct acpi_wakeq *wentry; struct device *dev; #endif /* SMALL_KERNEL */ paddr_t facspa; uint16_t pm1; int s; sc->sc_iot = ba->ba_iot; sc->sc_memt = ba->ba_memt; rw_init(&sc->sc_lck, "acpilk"); acpi_softc = sc; if (acpi_map(ba->ba_acpipbase, sizeof(struct acpi_rsdp), &handle)) { printf(": can't map memory\n"); return; } rsdp = (struct acpi_rsdp *)handle.va; sc->sc_revision = (int)rsdp->rsdp_revision; printf(": rev %d", sc->sc_revision); SIMPLEQ_INIT(&sc->sc_tables); SIMPLEQ_INIT(&sc->sc_wakedevs); #if NACPIPWRRES > 0 SIMPLEQ_INIT(&sc->sc_pwrresdevs); #endif /* NACPIPWRRES > 0 */ #ifndef SMALL_KERNEL sc->sc_note = malloc(sizeof(struct klist), M_DEVBUF, M_NOWAIT | M_ZERO); if (sc->sc_note == NULL) { printf(", can't allocate memory\n"); acpi_unmap(&handle); return; } #endif /* SMALL_KERNEL */ if (acpi_loadtables(sc, rsdp)) { printf(", can't load tables\n"); acpi_unmap(&handle); return; } acpi_unmap(&handle); /* * Find the FADT */ SIMPLEQ_FOREACH(entry, &sc->sc_tables, q_next) { if (memcmp(entry->q_table, FADT_SIG, sizeof(FADT_SIG) - 1) == 0) { sc->sc_fadt = entry->q_table; break; } } if (sc->sc_fadt == NULL) { printf(", no FADT\n"); return; } /* * A bunch of things need to be done differently for * Hardware-reduced ACPI. */ if (sc->sc_fadt->hdr_revision >= 5 && sc->sc_fadt->flags & FADT_HW_REDUCED_ACPI) sc->sc_hw_reduced = 1; /* Map Power Management registers */ acpi_map_pmregs(sc); /* * Check if we can and need to enable ACPI control. */ pm1 = acpi_read_pmreg(sc, ACPIREG_PM1_CNT, 0); if ((pm1 & ACPI_PM1_SCI_EN) == 0 && sc->sc_fadt->smi_cmd && (!sc->sc_fadt->acpi_enable && !sc->sc_fadt->acpi_disable)) { printf(", ACPI control unavailable\n"); acpi_unmap_pmregs(sc); return; } /* * Set up a pointer to the firmware control structure */ if (sc->sc_fadt->hdr_revision < 3 || sc->sc_fadt->x_firmware_ctl == 0) facspa = sc->sc_fadt->firmware_ctl; else facspa = sc->sc_fadt->x_firmware_ctl; if (acpi_map(facspa, sizeof(struct acpi_facs), &handle)) printf(" !FACS"); else sc->sc_facs = (struct acpi_facs *)handle.va; /* Create opcode hashtable */ aml_hashopcodes(); /* Create Default AML objects */ aml_create_defaultobjects(); /* * Load the DSDT from the FADT pointer -- use the * extended (64-bit) pointer if it exists */ if (sc->sc_fadt->hdr_revision < 3 || sc->sc_fadt->x_dsdt == 0) entry = acpi_maptable(sc, sc->sc_fadt->dsdt, NULL, NULL, NULL, -1); else entry = acpi_maptable(sc, sc->sc_fadt->x_dsdt, NULL, NULL, NULL, -1); if (entry == NULL) printf(" !DSDT"); p_dsdt = entry->q_table; acpi_parse_aml(sc, p_dsdt->aml, p_dsdt->hdr_length - sizeof(p_dsdt->hdr)); /* Load SSDT's */ SIMPLEQ_FOREACH(entry, &sc->sc_tables, q_next) { if (memcmp(entry->q_table, SSDT_SIG, sizeof(SSDT_SIG) - 1) == 0) { p_dsdt = entry->q_table; acpi_parse_aml(sc, p_dsdt->aml, p_dsdt->hdr_length - sizeof(p_dsdt->hdr)); } } /* Perform post-parsing fixups */ aml_postparse(); #ifndef SMALL_KERNEL /* Find available sleeping states */ acpi_init_states(sc); /* Find available sleep/resume related methods. */ acpi_init_pm(sc); #endif /* SMALL_KERNEL */ /* Initialize GPE handlers */ s = spltty(); acpi_init_gpes(sc); splx(s); /* some devices require periodic polling */ timeout_set(&sc->sc_dev_timeout, acpi_poll, sc); acpi_enabled = 1; /* * Take over ACPI control. Note that once we do this, we * effectively tell the system that we have ownership of * the ACPI hardware registers, and that SMI should leave * them alone * * This may prevent thermal control on some systems where * that actually does work */ if ((pm1 & ACPI_PM1_SCI_EN) == 0 && sc->sc_fadt->smi_cmd) { if (acpi_enable(sc)) { printf(", can't enable ACPI\n"); return; } } printf("\n%s: tables", DEVNAME(sc)); SIMPLEQ_FOREACH(entry, &sc->sc_tables, q_next) { printf(" %.4s", (char *)entry->q_table); } printf("\n"); #ifndef SMALL_KERNEL /* Display wakeup devices and lowest S-state */ wakeup_dev_ct = 0; printf("%s: wakeup devices", DEVNAME(sc)); SIMPLEQ_FOREACH(wentry, &sc->sc_wakedevs, q_next) { if (wakeup_dev_ct < 16) printf(" %.4s(S%d)", wentry->q_node->name, wentry->q_state); else if (wakeup_dev_ct == 16) printf(" [...]"); wakeup_dev_ct ++; } printf("\n"); /* * ACPI is enabled now -- attach timer */ if (!sc->sc_hw_reduced && (sc->sc_fadt->pm_tmr_blk || sc->sc_fadt->x_pm_tmr_blk.address)) { struct acpi_attach_args aaa; memset(&aaa, 0, sizeof(aaa)); aaa.aaa_name = "acpitimer"; aaa.aaa_iot = sc->sc_iot; aaa.aaa_memt = sc->sc_memt; #if 0 aaa.aaa_pcit = sc->sc_pcit; aaa.aaa_smbust = sc->sc_smbust; #endif config_found(self, &aaa, acpi_print); } #endif /* SMALL_KERNEL */ /* * Attach table-defined devices */ SIMPLEQ_FOREACH(entry, &sc->sc_tables, q_next) { struct acpi_attach_args aaa; memset(&aaa, 0, sizeof(aaa)); aaa.aaa_iot = sc->sc_iot; aaa.aaa_memt = sc->sc_memt; #if 0 aaa.aaa_pcit = sc->sc_pcit; aaa.aaa_smbust = sc->sc_smbust; #endif aaa.aaa_table = entry->q_table; config_found_sm(self, &aaa, acpi_print, acpi_submatch); } /* initialize runtime environment */ aml_find_node(&aml_root, "_INI", acpi_inidev, sc); /* Get PCI mapping */ aml_walknodes(&aml_root, AML_WALK_PRE, acpi_getpci, sc); /* attach pci interrupt routing tables */ aml_find_node(&aml_root, "_PRT", acpi_foundprt, sc); aml_find_node(&aml_root, "_HID", acpi_foundec, sc); /* check if we're running on a sony */ aml_find_node(&aml_root, "GBRT", acpi_foundsony, sc); aml_walknodes(&aml_root, AML_WALK_PRE, acpi_add_device, sc); #ifndef SMALL_KERNEL /* try to find smart battery first */ aml_find_node(&aml_root, "_HID", acpi_foundsbs, sc); #endif /* SMALL_KERNEL */ /* attach battery, power supply and button devices */ aml_find_node(&aml_root, "_HID", acpi_foundhid, sc); #ifndef SMALL_KERNEL #if NWD > 0 /* Attach IDE bay */ aml_walknodes(&aml_root, AML_WALK_PRE, acpi_foundide, sc); #endif /* attach docks */ aml_find_node(&aml_root, "_DCK", acpi_founddock, sc); /* attach video */ aml_find_node(&aml_root, "_DOS", acpi_foundvideo, sc); /* create list of devices we want to query when APM comes in */ SLIST_INIT(&sc->sc_ac); SLIST_INIT(&sc->sc_bat); TAILQ_FOREACH(dev, &alldevs, dv_list) { if (!strcmp(dev->dv_cfdata->cf_driver->cd_name, "acpiac")) { struct acpi_ac *ac; ac = malloc(sizeof(*ac), M_DEVBUF, M_WAITOK | M_ZERO); ac->aac_softc = (struct acpiac_softc *)dev; SLIST_INSERT_HEAD(&sc->sc_ac, ac, aac_link); } else if (!strcmp(dev->dv_cfdata->cf_driver->cd_name, "acpibat")) { struct acpi_bat *bat; bat = malloc(sizeof(*bat), M_DEVBUF, M_WAITOK | M_ZERO); bat->aba_softc = (struct acpibat_softc *)dev; SLIST_INSERT_HEAD(&sc->sc_bat, bat, aba_link); } else if (!strcmp(dev->dv_cfdata->cf_driver->cd_name, "acpisbs")) { struct acpi_sbs *sbs; sbs = malloc(sizeof(*sbs), M_DEVBUF, M_WAITOK | M_ZERO); sbs->asbs_softc = (struct acpisbs_softc *)dev; SLIST_INSERT_HEAD(&sc->sc_sbs, sbs, asbs_link); } } #endif /* SMALL_KERNEL */ /* Setup threads */ sc->sc_thread = malloc(sizeof(struct acpi_thread), M_DEVBUF, M_WAITOK); sc->sc_thread->sc = sc; sc->sc_thread->running = 1; /* Enable PCI Power Management. */ pci_dopm = 1; acpi_attach_machdep(sc); kthread_create_deferred(acpi_create_thread, sc); } int acpi_submatch(struct device *parent, void *match, void *aux) { struct acpi_attach_args *aaa = (struct acpi_attach_args *)aux; struct cfdata *cf = match; if (aaa->aaa_table == NULL) return (0); return ((*cf->cf_attach->ca_match)(parent, match, aux)); } int acpi_print(void *aux, const char *pnp) { struct acpi_attach_args *aa = aux; if (pnp) { if (aa->aaa_name) printf("%s at %s", aa->aaa_name, pnp); else if (aa->aaa_dev) printf("\"%s\" at %s", aa->aaa_dev, pnp); else return (QUIET); } return (UNCONF); } struct acpi_q * acpi_maptable(struct acpi_softc *sc, paddr_t addr, const char *sig, const char *oem, const char *tbl, int flag) { static int tblid; struct acpi_mem_map handle; struct acpi_table_header *hdr; struct acpi_q *entry; size_t len; /* Check if we can map address */ if (addr == 0) return NULL; if (acpi_map(addr, sizeof(*hdr), &handle)) return NULL; hdr = (struct acpi_table_header *)handle.va; len = hdr->length; acpi_unmap(&handle); /* Validate length/checksum */ if (acpi_map(addr, len, &handle)) return NULL; hdr = (struct acpi_table_header *)handle.va; if (acpi_checksum(hdr, len)) printf("\n%s: %.4s checksum error", DEVNAME(sc), hdr->signature); if ((sig && memcmp(sig, hdr->signature, 4)) || (oem && memcmp(oem, hdr->oemid, 6)) || (tbl && memcmp(tbl, hdr->oemtableid, 8))) { acpi_unmap(&handle); return NULL; } /* Allocate copy */ entry = malloc(sizeof(*entry) + len, M_DEVBUF, M_NOWAIT); if (entry != NULL) { memcpy(entry->q_data, handle.va, len); entry->q_table = entry->q_data; entry->q_id = ++tblid; if (flag < 0) SIMPLEQ_INSERT_HEAD(&sc->sc_tables, entry, q_next); else if (flag > 0) SIMPLEQ_INSERT_TAIL(&sc->sc_tables, entry, q_next); } acpi_unmap(&handle); return entry; } int acpi_loadtables(struct acpi_softc *sc, struct acpi_rsdp *rsdp) { struct acpi_q *sdt; int i, ntables; size_t len; if (rsdp->rsdp_revision == 2 && rsdp->rsdp_xsdt) { struct acpi_xsdt *xsdt; sdt = acpi_maptable(sc, rsdp->rsdp_xsdt, NULL, NULL, NULL, 0); if (sdt == NULL) { printf("couldn't map rsdt\n"); return (ENOMEM); } xsdt = (struct acpi_xsdt *)sdt->q_data; len = xsdt->hdr.length; ntables = (len - sizeof(struct acpi_table_header)) / sizeof(xsdt->table_offsets[0]); for (i = 0; i < ntables; i++) acpi_maptable(sc, xsdt->table_offsets[i], NULL, NULL, NULL, 1); free(sdt, M_DEVBUF, 0); } else { struct acpi_rsdt *rsdt; sdt = acpi_maptable(sc, rsdp->rsdp_rsdt, NULL, NULL, NULL, 0); if (sdt == NULL) { printf("couldn't map rsdt\n"); return (ENOMEM); } rsdt = (struct acpi_rsdt *)sdt->q_data; len = rsdt->hdr.length; ntables = (len - sizeof(struct acpi_table_header)) / sizeof(rsdt->table_offsets[0]); for (i = 0; i < ntables; i++) acpi_maptable(sc, rsdt->table_offsets[i], NULL, NULL, NULL, 1); free(sdt, M_DEVBUF, 0); } return (0); } /* Read from power management register */ int acpi_read_pmreg(struct acpi_softc *sc, int reg, int offset) { bus_space_handle_t ioh; bus_size_t size; int regval; /* * For Hardware-reduced ACPI we emulate PM1B_CNT to reflect * that the system is always in ACPI mode. */ if (sc->sc_hw_reduced && reg == ACPIREG_PM1B_CNT) { KASSERT(offset == 0); return ACPI_PM1_SCI_EN; } /* * For Hardware-reduced ACPI we also emulate PM1A_STS using * SLEEP_STATUS_REG. */ if (sc->sc_hw_reduced && reg == ACPIREG_PM1A_STS) { uint8_t value; KASSERT(offset == 0); acpi_gasio(sc, ACPI_IOREAD, sc->sc_fadt->sleep_status_reg.address_space_id, sc->sc_fadt->sleep_status_reg.address, sc->sc_fadt->sleep_status_reg.register_bit_width / 8, sc->sc_fadt->sleep_status_reg.access_size, &value); return ((int)value << 8); } /* Special cases: 1A/1B blocks can be OR'ed together */ switch (reg) { case ACPIREG_PM1_EN: return (acpi_read_pmreg(sc, ACPIREG_PM1A_EN, offset) | acpi_read_pmreg(sc, ACPIREG_PM1B_EN, offset)); case ACPIREG_PM1_STS: return (acpi_read_pmreg(sc, ACPIREG_PM1A_STS, offset) | acpi_read_pmreg(sc, ACPIREG_PM1B_STS, offset)); case ACPIREG_PM1_CNT: return (acpi_read_pmreg(sc, ACPIREG_PM1A_CNT, offset) | acpi_read_pmreg(sc, ACPIREG_PM1B_CNT, offset)); case ACPIREG_GPE_STS: dnprintf(50, "read GPE_STS offset: %.2x %.2x %.2x\n", offset, sc->sc_fadt->gpe0_blk_len>>1, sc->sc_fadt->gpe1_blk_len>>1); if (offset < (sc->sc_fadt->gpe0_blk_len >> 1)) { reg = ACPIREG_GPE0_STS; } break; case ACPIREG_GPE_EN: dnprintf(50, "read GPE_EN offset: %.2x %.2x %.2x\n", offset, sc->sc_fadt->gpe0_blk_len>>1, sc->sc_fadt->gpe1_blk_len>>1); if (offset < (sc->sc_fadt->gpe0_blk_len >> 1)) { reg = ACPIREG_GPE0_EN; } break; } if (reg >= ACPIREG_MAXREG || sc->sc_pmregs[reg].size == 0) return (0); regval = 0; ioh = sc->sc_pmregs[reg].ioh; size = sc->sc_pmregs[reg].size; if (size > sc->sc_pmregs[reg].access) size = sc->sc_pmregs[reg].access; switch (size) { case 1: regval = bus_space_read_1(sc->sc_iot, ioh, offset); break; case 2: regval = bus_space_read_2(sc->sc_iot, ioh, offset); break; case 4: regval = bus_space_read_4(sc->sc_iot, ioh, offset); break; } dnprintf(30, "acpi_readpm: %s = %.4x:%.4x %x\n", sc->sc_pmregs[reg].name, sc->sc_pmregs[reg].addr, offset, regval); return (regval); } /* Write to power management register */ void acpi_write_pmreg(struct acpi_softc *sc, int reg, int offset, int regval) { bus_space_handle_t ioh; bus_size_t size; /* * For Hardware-reduced ACPI we also emulate PM1A_STS using * SLEEP_STATUS_REG. */ if (sc->sc_hw_reduced && reg == ACPIREG_PM1A_STS) { uint8_t value = (regval >> 8); KASSERT(offset == 0); acpi_gasio(sc, ACPI_IOWRITE, sc->sc_fadt->sleep_status_reg.address_space_id, sc->sc_fadt->sleep_status_reg.address, sc->sc_fadt->sleep_status_reg.register_bit_width / 8, sc->sc_fadt->sleep_status_reg.access_size, &value); return; } /* * For Hardware-reduced ACPI we also emulate PM1A_CNT using * SLEEP_CONTROL_REG. */ if (sc->sc_hw_reduced && reg == ACPIREG_PM1A_CNT) { uint8_t value = (regval >> 8); KASSERT(offset == 0); acpi_gasio(sc, ACPI_IOWRITE, sc->sc_fadt->sleep_control_reg.address_space_id, sc->sc_fadt->sleep_control_reg.address, sc->sc_fadt->sleep_control_reg.register_bit_width / 8, sc->sc_fadt->sleep_control_reg.access_size, &value); return; } /* Special cases: 1A/1B blocks can be written with same value */ switch (reg) { case ACPIREG_PM1_EN: acpi_write_pmreg(sc, ACPIREG_PM1A_EN, offset, regval); acpi_write_pmreg(sc, ACPIREG_PM1B_EN, offset, regval); break; case ACPIREG_PM1_STS: acpi_write_pmreg(sc, ACPIREG_PM1A_STS, offset, regval); acpi_write_pmreg(sc, ACPIREG_PM1B_STS, offset, regval); break; case ACPIREG_PM1_CNT: acpi_write_pmreg(sc, ACPIREG_PM1A_CNT, offset, regval); acpi_write_pmreg(sc, ACPIREG_PM1B_CNT, offset, regval); break; case ACPIREG_GPE_STS: dnprintf(50, "write GPE_STS offset: %.2x %.2x %.2x %.2x\n", offset, sc->sc_fadt->gpe0_blk_len>>1, sc->sc_fadt->gpe1_blk_len>>1, regval); if (offset < (sc->sc_fadt->gpe0_blk_len >> 1)) { reg = ACPIREG_GPE0_STS; } break; case ACPIREG_GPE_EN: dnprintf(50, "write GPE_EN offset: %.2x %.2x %.2x %.2x\n", offset, sc->sc_fadt->gpe0_blk_len>>1, sc->sc_fadt->gpe1_blk_len>>1, regval); if (offset < (sc->sc_fadt->gpe0_blk_len >> 1)) { reg = ACPIREG_GPE0_EN; } break; } /* All special case return here */ if (reg >= ACPIREG_MAXREG) return; ioh = sc->sc_pmregs[reg].ioh; size = sc->sc_pmregs[reg].size; if (size > sc->sc_pmregs[reg].access) size = sc->sc_pmregs[reg].access; switch (size) { case 1: bus_space_write_1(sc->sc_iot, ioh, offset, regval); break; case 2: bus_space_write_2(sc->sc_iot, ioh, offset, regval); break; case 4: bus_space_write_4(sc->sc_iot, ioh, offset, regval); break; } dnprintf(30, "acpi_writepm: %s = %.4x:%.4x %x\n", sc->sc_pmregs[reg].name, sc->sc_pmregs[reg].addr, offset, regval); } /* Map Power Management registers */ void acpi_map_pmregs(struct acpi_softc *sc) { bus_addr_t addr; bus_size_t size, access; const char *name; int reg; /* Registers don't exist on Hardware-reduced ACPI. */ if (sc->sc_hw_reduced) return; for (reg = 0; reg < ACPIREG_MAXREG; reg++) { size = 0; access = 0; switch (reg) { case ACPIREG_SMICMD: name = "smi"; size = access = 1; addr = sc->sc_fadt->smi_cmd; break; case ACPIREG_PM1A_STS: case ACPIREG_PM1A_EN: name = "pm1a_sts"; size = sc->sc_fadt->pm1_evt_len >> 1; addr = sc->sc_fadt->pm1a_evt_blk; access = 2; if (reg == ACPIREG_PM1A_EN && addr) { addr += size; name = "pm1a_en"; } break; case ACPIREG_PM1A_CNT: name = "pm1a_cnt"; size = sc->sc_fadt->pm1_cnt_len; addr = sc->sc_fadt->pm1a_cnt_blk; access = 2; break; case ACPIREG_PM1B_STS: case ACPIREG_PM1B_EN: name = "pm1b_sts"; size = sc->sc_fadt->pm1_evt_len >> 1; addr = sc->sc_fadt->pm1b_evt_blk; access = 2; if (reg == ACPIREG_PM1B_EN && addr) { addr += size; name = "pm1b_en"; } break; case ACPIREG_PM1B_CNT: name = "pm1b_cnt"; size = sc->sc_fadt->pm1_cnt_len; addr = sc->sc_fadt->pm1b_cnt_blk; access = 2; break; case ACPIREG_PM2_CNT: name = "pm2_cnt"; size = sc->sc_fadt->pm2_cnt_len; addr = sc->sc_fadt->pm2_cnt_blk; access = size; break; #if 0 case ACPIREG_PM_TMR: /* Allocated in acpitimer */ name = "pm_tmr"; size = sc->sc_fadt->pm_tmr_len; addr = sc->sc_fadt->pm_tmr_blk; access = 4; break; #endif case ACPIREG_GPE0_STS: case ACPIREG_GPE0_EN: name = "gpe0_sts"; size = sc->sc_fadt->gpe0_blk_len >> 1; addr = sc->sc_fadt->gpe0_blk; access = 1; dnprintf(20, "gpe0 block len : %x\n", sc->sc_fadt->gpe0_blk_len >> 1); dnprintf(20, "gpe0 block addr: %x\n", sc->sc_fadt->gpe0_blk); if (reg == ACPIREG_GPE0_EN && addr) { addr += size; name = "gpe0_en"; } break; case ACPIREG_GPE1_STS: case ACPIREG_GPE1_EN: name = "gpe1_sts"; size = sc->sc_fadt->gpe1_blk_len >> 1; addr = sc->sc_fadt->gpe1_blk; access = 1; dnprintf(20, "gpe1 block len : %x\n", sc->sc_fadt->gpe1_blk_len >> 1); dnprintf(20, "gpe1 block addr: %x\n", sc->sc_fadt->gpe1_blk); if (reg == ACPIREG_GPE1_EN && addr) { addr += size; name = "gpe1_en"; } break; } if (size && addr) { dnprintf(50, "mapping: %.4lx %.4lx %s\n", addr, size, name); /* Size and address exist; map register space */ bus_space_map(sc->sc_iot, addr, size, 0, &sc->sc_pmregs[reg].ioh); sc->sc_pmregs[reg].name = name; sc->sc_pmregs[reg].size = size; sc->sc_pmregs[reg].addr = addr; sc->sc_pmregs[reg].access = min(access, 4); } } } void acpi_unmap_pmregs(struct acpi_softc *sc) { int reg; for (reg = 0; reg < ACPIREG_MAXREG; reg++) { if (sc->sc_pmregs[reg].size && sc->sc_pmregs[reg].addr) bus_space_unmap(sc->sc_iot, sc->sc_pmregs[reg].ioh, sc->sc_pmregs[reg].size); } } int acpi_enable(struct acpi_softc *sc) { int idx; acpi_write_pmreg(sc, ACPIREG_SMICMD, 0, sc->sc_fadt->acpi_enable); idx = 0; do { if (idx++ > ACPIEN_RETRIES) { return ETIMEDOUT; } } while (!(acpi_read_pmreg(sc, ACPIREG_PM1_CNT, 0) & ACPI_PM1_SCI_EN)); return 0; } /* ACPI Workqueue support */ SIMPLEQ_HEAD(,acpi_taskq) acpi_taskq = SIMPLEQ_HEAD_INITIALIZER(acpi_taskq); void acpi_addtask(struct acpi_softc *sc, void (*handler)(void *, int), void *arg0, int arg1) { struct acpi_taskq *wq; int s; wq = malloc(sizeof(*wq), M_DEVBUF, M_ZERO | M_NOWAIT); if (wq == NULL) return; wq->handler = handler; wq->arg0 = arg0; wq->arg1 = arg1; s = spltty(); SIMPLEQ_INSERT_TAIL(&acpi_taskq, wq, next); splx(s); } int acpi_dotask(struct acpi_softc *sc) { struct acpi_taskq *wq; int s; s = spltty(); if (SIMPLEQ_EMPTY(&acpi_taskq)) { splx(s); /* we don't have anything to do */ return (0); } wq = SIMPLEQ_FIRST(&acpi_taskq); SIMPLEQ_REMOVE_HEAD(&acpi_taskq, next); splx(s); wq->handler(wq->arg0, wq->arg1); free(wq, M_DEVBUF, sizeof(*wq)); /* We did something */ return (1); } #ifndef SMALL_KERNEL int is_ata(struct aml_node *node) { return (aml_searchname(node, "_GTM") != NULL || aml_searchname(node, "_GTF") != NULL || aml_searchname(node, "_STM") != NULL || aml_searchname(node, "_SDD") != NULL); } int is_ejectable(struct aml_node *node) { return (aml_searchname(node, "_EJ0") != NULL); } int is_ejectable_bay(struct aml_node *node) { return ((is_ata(node) || is_ata(node->parent)) && is_ejectable(node)); } #if NWD > 0 int acpiide_notify(struct aml_node *node, int ntype, void *arg) { struct idechnl *ide = arg; struct acpi_softc *sc = ide->sc; struct pciide_softc *wsc; struct device *dev; int b,d,f; int64_t sta; if (aml_evalinteger(sc, node, "_STA", 0, NULL, &sta) != 0) return (0); dnprintf(10, "IDE notify! %s %d status:%llx\n", aml_nodename(node), ntype, sta); /* Walk device list looking for IDE device match */ TAILQ_FOREACH(dev, &alldevs, dv_list) { if (strcmp(dev->dv_cfdata->cf_driver->cd_name, "pciide")) continue; wsc = (struct pciide_softc *)dev; pci_decompose_tag(NULL, wsc->sc_tag, &b, &d, &f); if (b != ACPI_PCI_BUS(ide->addr) || d != ACPI_PCI_DEV(ide->addr) || f != ACPI_PCI_FN(ide->addr)) continue; dnprintf(10, "Found pciide: %s %x.%x.%x channel:%llx\n", dev->dv_xname, b,d,f, ide->chnl); if (sta == 0 && ide->sta) wdcdetach( &wsc->pciide_channels[ide->chnl].wdc_channel, 0); else if (sta && !ide->sta) wdcattach( &wsc->pciide_channels[ide->chnl].wdc_channel); ide->sta = sta; } return (0); } int acpi_foundide(struct aml_node *node, void *arg) { struct acpi_softc *sc = arg; struct aml_node *pp; struct idechnl *ide; union amlpci_t pi; int lvl; /* Check if this is an ejectable bay */ if (!is_ejectable_bay(node)) return (0); ide = malloc(sizeof(struct idechnl), M_DEVBUF, M_NOWAIT | M_ZERO); ide->sc = sc; /* GTM/GTF can be at 2/3 levels: pciX.ideX.channelX[.driveX] */ lvl = 0; for (pp=node->parent; pp; pp=pp->parent) { lvl++; if (aml_searchname(pp, "_HID")) break; } /* Get PCI address and channel */ if (lvl == 3) { aml_evalinteger(sc, node->parent, "_ADR", 0, NULL, &ide->chnl); aml_rdpciaddr(node->parent->parent, &pi); ide->addr = pi.addr; } else if (lvl == 4) { aml_evalinteger(sc, node->parent->parent, "_ADR", 0, NULL, &ide->chnl); aml_rdpciaddr(node->parent->parent->parent, &pi); ide->addr = pi.addr; } dnprintf(10, "%s %llx channel:%llx\n", aml_nodename(node), ide->addr, ide->chnl); aml_evalinteger(sc, node, "_STA", 0, NULL, &ide->sta); dnprintf(10, "Got Initial STA: %llx\n", ide->sta); aml_register_notify(node, "acpiide", acpiide_notify, ide, 0); return (0); } #endif /* NWD > 0 */ void acpi_sleep_task(void *arg0, int sleepmode) { struct acpi_softc *sc = arg0; struct acpi_ac *ac; struct acpi_bat *bat; struct acpi_sbs *sbs; /* System goes to sleep here.. */ acpi_sleep_state(sc, sleepmode); /* AC and battery information needs refreshing */ SLIST_FOREACH(ac, &sc->sc_ac, aac_link) aml_notify(ac->aac_softc->sc_devnode, 0x80); SLIST_FOREACH(bat, &sc->sc_bat, aba_link) aml_notify(bat->aba_softc->sc_devnode, 0x80); SLIST_FOREACH(sbs, &sc->sc_sbs, asbs_link) aml_notify(sbs->asbs_softc->sc_devnode, 0x80); } #endif /* SMALL_KERNEL */ void acpi_reset(void) { u_int32_t reset_as, reset_len; u_int32_t value; struct acpi_softc *sc = acpi_softc; struct acpi_fadt *fadt = sc->sc_fadt; if (acpi_enabled == 0) return; /* * RESET_REG_SUP is not properly set in some implementations, * but not testing against it breaks more machines than it fixes */ if (fadt->hdr_revision <= 1 || !(fadt->flags & FADT_RESET_REG_SUP) || fadt->reset_reg.address == 0) return; value = fadt->reset_value; reset_as = fadt->reset_reg.register_bit_width / 8; if (reset_as == 0) reset_as = 1; reset_len = fadt->reset_reg.access_size; if (reset_len == 0) reset_len = reset_as; acpi_gasio(sc, ACPI_IOWRITE, fadt->reset_reg.address_space_id, fadt->reset_reg.address, reset_as, reset_len, &value); delay(100000); } void acpi_gpe_task(void *arg0, int gpe) { struct acpi_softc *sc = acpi_softc; struct gpe_block *pgpe = &sc->gpe_table[gpe]; dnprintf(10, "handle gpe: %x\n", gpe); if (pgpe->handler && pgpe->active) { pgpe->active = 0; pgpe->handler(sc, gpe, pgpe->arg); } } void acpi_pbtn_task(void *arg0, int dummy) { struct acpi_softc *sc = arg0; uint16_t en; int s; dnprintf(1,"power button pressed\n"); /* Reset the latch and re-enable the GPE */ s = spltty(); en = acpi_read_pmreg(sc, ACPIREG_PM1_EN, 0); acpi_write_pmreg(sc, ACPIREG_PM1_EN, 0, en | ACPI_PM1_PWRBTN_EN); splx(s); acpi_addtask(sc, acpi_powerdown_task, sc, 0); } void acpi_sbtn_task(void *arg0, int dummy) { struct acpi_softc *sc = arg0; uint16_t en; int s; dnprintf(1,"sleep button pressed\n"); aml_notify_dev(ACPI_DEV_SBD, 0x80); /* Reset the latch and re-enable the GPE */ s = spltty(); en = acpi_read_pmreg(sc, ACPIREG_PM1_EN, 0); acpi_write_pmreg(sc, ACPIREG_PM1_EN, 0, en | ACPI_PM1_SLPBTN_EN); splx(s); } void acpi_powerdown_task(void *arg0, int dummy) { extern int allowpowerdown; if (allowpowerdown == 1) { allowpowerdown = 0; prsignal(initprocess, SIGUSR2); } } int acpi_interrupt(void *arg) { struct acpi_softc *sc = (struct acpi_softc *)arg; u_int32_t processed = 0, idx, jdx; u_int16_t sts, en; dnprintf(40, "ACPI Interrupt\n"); for (idx = 0; idx < sc->sc_lastgpe; idx += 8) { sts = acpi_read_pmreg(sc, ACPIREG_GPE_STS, idx>>3); en = acpi_read_pmreg(sc, ACPIREG_GPE_EN, idx>>3); if (en & sts) { dnprintf(10, "GPE block: %.2x %.2x %.2x\n", idx, sts, en); /* Mask the GPE until it is serviced */ acpi_write_pmreg(sc, ACPIREG_GPE_EN, idx>>3, en & ~sts); for (jdx = 0; jdx < 8; jdx++) { if (en & sts & (1L << jdx)) { /* Signal this GPE */ sc->gpe_table[idx+jdx].active = 1; dnprintf(10, "queue gpe: %x\n", idx+jdx); acpi_addtask(sc, acpi_gpe_task, NULL, idx+jdx); /* * Edge interrupts need their STS bits * cleared now. Level interrupts will * have their STS bits cleared just * before they are re-enabled. */ if (sc->gpe_table[idx+jdx].edge) acpi_write_pmreg(sc, ACPIREG_GPE_STS, idx>>3, 1L << jdx); processed = 1; } } } } sts = acpi_read_pmreg(sc, ACPIREG_PM1_STS, 0); en = acpi_read_pmreg(sc, ACPIREG_PM1_EN, 0); if (sts & en) { dnprintf(10,"GEN interrupt: %.4x\n", sts & en); sts &= en; if (sts & ACPI_PM1_PWRBTN_STS) { /* Mask and acknowledge */ en &= ~ACPI_PM1_PWRBTN_EN; acpi_write_pmreg(sc, ACPIREG_PM1_EN, 0, en); acpi_write_pmreg(sc, ACPIREG_PM1_STS, 0, ACPI_PM1_PWRBTN_STS); sts &= ~ACPI_PM1_PWRBTN_STS; acpi_addtask(sc, acpi_pbtn_task, sc, 0); } if (sts & ACPI_PM1_SLPBTN_STS) { /* Mask and acknowledge */ en &= ~ACPI_PM1_SLPBTN_EN; acpi_write_pmreg(sc, ACPIREG_PM1_EN, 0, en); acpi_write_pmreg(sc, ACPIREG_PM1_STS, 0, ACPI_PM1_SLPBTN_STS); sts &= ~ACPI_PM1_SLPBTN_STS; acpi_addtask(sc, acpi_sbtn_task, sc, 0); } if (sts) { printf("%s: PM1 stuck (en 0x%x st 0x%x), clearing\n", sc->sc_dev.dv_xname, en, sts); acpi_write_pmreg(sc, ACPIREG_PM1_EN, 0, en & ~sts); acpi_write_pmreg(sc, ACPIREG_PM1_STS, 0, sts); } processed = 1; } if (processed) { acpi_wakeup(sc); } return (processed); } int acpi_add_device(struct aml_node *node, void *arg) { static int nacpicpus = 0; struct device *self = arg; struct acpi_softc *sc = arg; struct acpi_attach_args aaa; struct aml_value res; CPU_INFO_ITERATOR cii; struct cpu_info *ci; int proc_id = -1; memset(&aaa, 0, sizeof(aaa)); aaa.aaa_node = node; aaa.aaa_iot = sc->sc_iot; aaa.aaa_memt = sc->sc_memt; if (node == NULL || node->value == NULL) return 0; switch (node->value->type) { case AML_OBJTYPE_PROCESSOR: if (nacpicpus >= ncpus) return 0; if (aml_evalnode(sc, aaa.aaa_node, 0, NULL, &res) == 0) { if (res.type == AML_OBJTYPE_PROCESSOR) proc_id = res.v_processor.proc_id; aml_freevalue(&res); } CPU_INFO_FOREACH(cii, ci) { if (ci->ci_acpi_proc_id == proc_id) break; } if (ci == NULL) return 0; nacpicpus++; aaa.aaa_name = "acpicpu"; break; case AML_OBJTYPE_THERMZONE: aaa.aaa_name = "acpitz"; break; case AML_OBJTYPE_POWERRSRC: aaa.aaa_name = "acpipwrres"; break; default: return 0; } config_found(self, &aaa, acpi_print); return 0; } void acpi_enable_onegpe(struct acpi_softc *sc, int gpe) { uint8_t mask, en; /* Read enabled register */ mask = (1L << (gpe & 7)); en = acpi_read_pmreg(sc, ACPIREG_GPE_EN, gpe>>3); dnprintf(50, "enabling GPE %.2x (current: %sabled) %.2x\n", gpe, (en & mask) ? "en" : "dis", en); acpi_write_pmreg(sc, ACPIREG_GPE_EN, gpe>>3, en | mask); } /* Clear all GPEs */ void acpi_disable_allgpes(struct acpi_softc *sc) { int idx; for (idx = 0; idx < sc->sc_lastgpe; idx += 8) { acpi_write_pmreg(sc, ACPIREG_GPE_EN, idx >> 3, 0); acpi_write_pmreg(sc, ACPIREG_GPE_STS, idx >> 3, -1); } } /* Enable runtime GPEs */ void acpi_enable_rungpes(struct acpi_softc *sc) { int idx; for (idx = 0; idx < sc->sc_lastgpe; idx++) if (sc->gpe_table[idx].handler) acpi_enable_onegpe(sc, idx); } /* Enable wakeup GPEs */ void acpi_enable_wakegpes(struct acpi_softc *sc, int state) { struct acpi_wakeq *wentry; SIMPLEQ_FOREACH(wentry, &sc->sc_wakedevs, q_next) { dnprintf(10, "%.4s(S%d) gpe %.2x\n", wentry->q_node->name, wentry->q_state, wentry->q_gpe); if (state <= wentry->q_state) acpi_enable_onegpe(sc, wentry->q_gpe); } } int acpi_set_gpehandler(struct acpi_softc *sc, int gpe, int (*handler) (struct acpi_softc *, int, void *), void *arg, int edge) { struct gpe_block *ptbl; ptbl = acpi_find_gpe(sc, gpe); if (ptbl == NULL || handler == NULL) return -EINVAL; if (ptbl->handler != NULL) { dnprintf(10, "error: GPE %.2x already enabled\n", gpe); return -EBUSY; } dnprintf(50, "Adding GPE handler %.2x (%s)\n", gpe, edge ? "edge" : "level"); ptbl->handler = handler; ptbl->arg = arg; ptbl->edge = edge; return (0); } int acpi_gpe(struct acpi_softc *sc, int gpe, void *arg) { struct aml_node *node = arg; uint8_t mask, en; dnprintf(10, "handling GPE %.2x\n", gpe); aml_evalnode(sc, node, 0, NULL, NULL); mask = (1L << (gpe & 7)); if (!sc->gpe_table[gpe].edge) acpi_write_pmreg(sc, ACPIREG_GPE_STS, gpe>>3, mask); en = acpi_read_pmreg(sc, ACPIREG_GPE_EN, gpe>>3); acpi_write_pmreg(sc, ACPIREG_GPE_EN, gpe>>3, en | mask); return (0); } /* Discover Devices that can wakeup the system * _PRW returns a package * pkg[0] = integer (FADT gpe bit) or package (gpe block,gpe bit) * pkg[1] = lowest sleep state * pkg[2+] = power resource devices (optional) * * To enable wakeup devices: * Evaluate _ON method in each power resource device * Evaluate _PSW method */ int acpi_foundprw(struct aml_node *node, void *arg) { struct acpi_softc *sc = arg; struct acpi_wakeq *wq; int64_t sta; if (aml_evalinteger(sc, node->parent, "_STA", 0, NULL, &sta)) sta = STA_PRESENT | STA_ENABLED | STA_DEV_OK | 0x1000; if ((sta & STA_PRESENT) == 0) return 0; wq = malloc(sizeof(struct acpi_wakeq), M_DEVBUF, M_NOWAIT | M_ZERO); if (wq == NULL) return 0; wq->q_wakepkg = malloc(sizeof(struct aml_value), M_DEVBUF, M_NOWAIT | M_ZERO); if (wq->q_wakepkg == NULL) { free(wq, M_DEVBUF, sizeof(*wq)); return 0; } dnprintf(10, "Found _PRW (%s)\n", node->parent->name); aml_evalnode(sc, node, 0, NULL, wq->q_wakepkg); wq->q_node = node->parent; wq->q_gpe = -1; /* Get GPE of wakeup device, and lowest sleep level */ if (wq->q_wakepkg->type == AML_OBJTYPE_PACKAGE && wq->q_wakepkg->length >= 2) { if (wq->q_wakepkg->v_package[0]->type == AML_OBJTYPE_INTEGER) wq->q_gpe = wq->q_wakepkg->v_package[0]->v_integer; if (wq->q_wakepkg->v_package[1]->type == AML_OBJTYPE_INTEGER) wq->q_state = wq->q_wakepkg->v_package[1]->v_integer; } SIMPLEQ_INSERT_TAIL(&sc->sc_wakedevs, wq, q_next); return 0; } struct gpe_block * acpi_find_gpe(struct acpi_softc *sc, int gpe) { if (gpe >= sc->sc_lastgpe) return NULL; return &sc->gpe_table[gpe]; } void acpi_init_gpes(struct acpi_softc *sc) { struct aml_node *gpe; char name[12]; int idx, ngpe; sc->sc_lastgpe = sc->sc_fadt->gpe0_blk_len << 2; if (sc->sc_fadt->gpe1_blk_len) { } dnprintf(50, "Last GPE: %.2x\n", sc->sc_lastgpe); /* Allocate GPE table */ sc->gpe_table = mallocarray(sc->sc_lastgpe, sizeof(struct gpe_block), M_DEVBUF, M_WAITOK | M_ZERO); ngpe = 0; /* Clear GPE status */ acpi_disable_allgpes(sc); for (idx = 0; idx < sc->sc_lastgpe; idx++) { /* Search Level-sensitive GPES */ snprintf(name, sizeof(name), "\\_GPE._L%.2X", idx); gpe = aml_searchname(&aml_root, name); if (gpe != NULL) acpi_set_gpehandler(sc, idx, acpi_gpe, gpe, 0); if (gpe == NULL) { /* Search Edge-sensitive GPES */ snprintf(name, sizeof(name), "\\_GPE._E%.2X", idx); gpe = aml_searchname(&aml_root, name); if (gpe != NULL) acpi_set_gpehandler(sc, idx, acpi_gpe, gpe, 1); } } aml_find_node(&aml_root, "_PRW", acpi_foundprw, sc); sc->sc_maxgpe = ngpe; } void acpi_init_pm(struct acpi_softc *sc) { sc->sc_tts = aml_searchname(&aml_root, "_TTS"); sc->sc_pts = aml_searchname(&aml_root, "_PTS"); sc->sc_wak = aml_searchname(&aml_root, "_WAK"); sc->sc_bfs = aml_searchname(&aml_root, "_BFS"); sc->sc_gts = aml_searchname(&aml_root, "_GTS"); sc->sc_sst = aml_searchname(&aml_root, "_SI_._SST"); } #ifndef SMALL_KERNEL void acpi_init_states(struct acpi_softc *sc) { struct aml_value res; char name[8]; int i; printf("\n%s: sleep states", DEVNAME(sc)); for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { snprintf(name, sizeof(name), "_S%d_", i); sc->sc_sleeptype[i].slp_typa = -1; sc->sc_sleeptype[i].slp_typb = -1; if (aml_evalname(sc, &aml_root, name, 0, NULL, &res) == 0) { if (res.type == AML_OBJTYPE_PACKAGE) { sc->sc_sleeptype[i].slp_typa = aml_val2int(res.v_package[0]); sc->sc_sleeptype[i].slp_typb = aml_val2int(res.v_package[1]); printf(" S%d", i); } aml_freevalue(&res); } } } void acpi_sleep_pm(struct acpi_softc *sc, int state) { uint16_t rega, regb, regra, regrb; int retry = 0; disable_intr(); /* Clear WAK_STS bit */ acpi_write_pmreg(sc, ACPIREG_PM1_STS, 0, ACPI_PM1_WAK_STS); /* Disable BM arbitration at deep sleep and beyond */ if (state >= ACPI_STATE_S3 && sc->sc_fadt->pm2_cnt_blk && sc->sc_fadt->pm2_cnt_len) acpi_write_pmreg(sc, ACPIREG_PM2_CNT, 0, ACPI_PM2_ARB_DIS); /* Write SLP_TYPx values */ rega = acpi_read_pmreg(sc, ACPIREG_PM1A_CNT, 0); regb = acpi_read_pmreg(sc, ACPIREG_PM1B_CNT, 0); rega &= ~(ACPI_PM1_SLP_TYPX_MASK | ACPI_PM1_SLP_EN); regb &= ~(ACPI_PM1_SLP_TYPX_MASK | ACPI_PM1_SLP_EN); rega |= ACPI_PM1_SLP_TYPX(sc->sc_sleeptype[state].slp_typa); regb |= ACPI_PM1_SLP_TYPX(sc->sc_sleeptype[state].slp_typb); acpi_write_pmreg(sc, ACPIREG_PM1A_CNT, 0, rega); acpi_write_pmreg(sc, ACPIREG_PM1B_CNT, 0, regb); /* Loop on WAK_STS, setting the SLP_EN bits once in a while */ rega |= ACPI_PM1_SLP_EN; regb |= ACPI_PM1_SLP_EN; while (1) { if (retry == 0) { acpi_write_pmreg(sc, ACPIREG_PM1A_CNT, 0, rega); acpi_write_pmreg(sc, ACPIREG_PM1B_CNT, 0, regb); } retry = (retry + 1) % 100000; regra = acpi_read_pmreg(sc, ACPIREG_PM1A_STS, 0); regrb = acpi_read_pmreg(sc, ACPIREG_PM1B_STS, 0); if ((regra & ACPI_PM1_WAK_STS) || (regrb & ACPI_PM1_WAK_STS)) break; } } u_int32_t acpi_force_bm; void acpi_resume_pm(struct acpi_softc *sc, int fromstate) { uint16_t rega, regb, en; /* Write SLP_TYPx values */ rega = acpi_read_pmreg(sc, ACPIREG_PM1A_CNT, 0); regb = acpi_read_pmreg(sc, ACPIREG_PM1B_CNT, 0); rega &= ~(ACPI_PM1_SLP_TYPX_MASK | ACPI_PM1_SLP_EN); regb &= ~(ACPI_PM1_SLP_TYPX_MASK | ACPI_PM1_SLP_EN); rega |= ACPI_PM1_SLP_TYPX(sc->sc_sleeptype[ACPI_STATE_S0].slp_typa); regb |= ACPI_PM1_SLP_TYPX(sc->sc_sleeptype[ACPI_STATE_S0].slp_typb); acpi_write_pmreg(sc, ACPIREG_PM1A_CNT, 0, rega); acpi_write_pmreg(sc, ACPIREG_PM1B_CNT, 0, regb); /* Force SCI_EN on resume to fix horribly broken machines */ acpi_write_pmreg(sc, ACPIREG_PM1_CNT, 0, ACPI_PM1_SCI_EN | acpi_force_bm); /* Clear fixed event status */ acpi_write_pmreg(sc, ACPIREG_PM1_STS, 0, ACPI_PM1_ALL_STS); /* acpica-reference.pdf page 148 says do not call _BFS */ /* 1st resume AML step: _BFS(fromstate) */ aml_node_setval(sc, sc->sc_bfs, fromstate); /* Enable runtime GPEs */ acpi_disable_allgpes(sc); acpi_enable_rungpes(sc); acpi_indicator(sc, ACPI_SST_WAKING); /* 2nd resume AML step: _WAK(fromstate) */ aml_node_setval(sc, sc->sc_wak, fromstate); /* Clear WAK_STS bit */ acpi_write_pmreg(sc, ACPIREG_PM1_STS, 0, ACPI_PM1_WAK_STS); en = acpi_read_pmreg(sc, ACPIREG_PM1_EN, 0); if (!(sc->sc_fadt->flags & FADT_PWR_BUTTON)) en |= ACPI_PM1_PWRBTN_EN; if (!(sc->sc_fadt->flags & FADT_SLP_BUTTON)) en |= ACPI_PM1_SLPBTN_EN; acpi_write_pmreg(sc, ACPIREG_PM1_EN, 0, en); /* * If PM2 exists, re-enable BM arbitration (reportedly some * BIOS forget to) */ if (sc->sc_fadt->pm2_cnt_blk && sc->sc_fadt->pm2_cnt_len) { rega = acpi_read_pmreg(sc, ACPIREG_PM2_CNT, 0); rega &= ~ACPI_PM2_ARB_DIS; acpi_write_pmreg(sc, ACPIREG_PM2_CNT, 0, rega); } } /* Set the indicator light to some state */ void acpi_indicator(struct acpi_softc *sc, int led_state) { static int save_led_state = -1; if (save_led_state != led_state) { aml_node_setval(sc, sc->sc_sst, led_state); save_led_state = led_state; } } int acpi_sleep_state(struct acpi_softc *sc, int sleepmode) { extern int perflevel; extern int lid_action; int error = ENXIO; size_t rndbuflen = 0; char *rndbuf = NULL; int state, s; #if NSOFTRAID > 0 extern void sr_quiesce(void); #endif switch (sleepmode) { case ACPI_SLEEP_SUSPEND: state = ACPI_STATE_S3; break; case ACPI_SLEEP_HIBERNATE: state = ACPI_STATE_S4; break; default: return (EOPNOTSUPP); } if (sc->sc_sleeptype[state].slp_typa == -1 || sc->sc_sleeptype[state].slp_typb == -1) { printf("%s: state S%d unavailable\n", sc->sc_dev.dv_xname, state); return (EOPNOTSUPP); } /* 1st suspend AML step: _TTS(tostate) */ if (aml_node_setval(sc, sc->sc_tts, state) != 0) goto fail_tts; acpi_indicator(sc, ACPI_SST_WAKING); /* blink */ #if NWSDISPLAY > 0 /* * Temporarily release the lock to prevent the X server from * blocking on setting the display brightness. */ rw_exit_write(&sc->sc_lck); wsdisplay_suspend(); rw_enter_write(&sc->sc_lck); #endif /* NWSDISPLAY > 0 */ stop_periodic_resettodr(); #ifdef HIBERNATE if (sleepmode == ACPI_SLEEP_HIBERNATE) { /* * Discard useless memory to reduce fragmentation, * and attempt to create a hibernate work area */ hibernate_suspend_bufcache(); uvmpd_hibernate(); if (hibernate_alloc()) { printf("%s: failed to allocate hibernate memory\n", sc->sc_dev.dv_xname); goto fail_alloc; } } #endif /* HIBERNATE */ sensor_quiesce(); if (config_suspend_all(DVACT_QUIESCE)) goto fail_quiesce; vfs_stall(curproc, 1); #if NSOFTRAID > 0 sr_quiesce(); #endif bufq_quiesce(); #ifdef MULTIPROCESSOR acpi_sleep_mp(); #endif #ifdef HIBERNATE if (sleepmode == ACPI_SLEEP_HIBERNATE) { /* * We've just done various forms of syncing to disk * churned lots of memory dirty. We don't need to * save that dirty memory to hibernate, so release it. */ hibernate_suspend_bufcache(); uvmpd_hibernate(); } #endif /* HIBERNATE */ resettodr(); s = splhigh(); disable_intr(); /* PSL_I for resume; PIC/APIC broken until repair */ cold = 2; /* Force other code to delay() instead of tsleep() */ if (config_suspend_all(DVACT_SUSPEND) != 0) goto fail_suspend; acpi_sleep_clocks(sc, state); suspend_randomness(); /* 2nd suspend AML step: _PTS(tostate) */ if (aml_node_setval(sc, sc->sc_pts, state) != 0) goto fail_pts; acpibtn_enable_psw(); /* enable _LID for wakeup */ acpi_indicator(sc, ACPI_SST_SLEEPING); /* 3rd suspend AML step: _GTS(tostate) */ aml_node_setval(sc, sc->sc_gts, state); /* Clear fixed event status */ acpi_write_pmreg(sc, ACPIREG_PM1_STS, 0, ACPI_PM1_ALL_STS); /* Enable wake GPEs */ acpi_disable_allgpes(sc); acpi_enable_wakegpes(sc, state); /* Sleep */ sc->sc_state = state; error = acpi_sleep_cpu(sc, state); sc->sc_state = ACPI_STATE_S0; /* Resume */ #ifdef HIBERNATE if (sleepmode == ACPI_SLEEP_HIBERNATE) { uvm_pmr_dirty_everything(); hib_getentropy(&rndbuf, &rndbuflen); } #endif /* HIBERNATE */ acpi_resume_clocks(sc); /* AML may need clocks */ acpi_resume_pm(sc, state); acpi_resume_cpu(sc); fail_pts: config_suspend_all(DVACT_RESUME); fail_suspend: cold = 0; enable_intr(); splx(s); acpibtn_disable_psw(); /* disable _LID for wakeup */ inittodr(time_second); /* 3rd resume AML step: _TTS(runstate) */ aml_node_setval(sc, sc->sc_tts, sc->sc_state); resume_randomness(rndbuf, rndbuflen); /* force RNG upper level reseed */ #ifdef MULTIPROCESSOR acpi_resume_mp(); #endif vfs_stall(curproc, 0); bufq_restart(); fail_quiesce: config_suspend_all(DVACT_WAKEUP); sensor_restart(); #ifdef HIBERNATE if (sleepmode == ACPI_SLEEP_HIBERNATE) { hibernate_free(); fail_alloc: hibernate_resume_bufcache(); } #endif /* HIBERNATE */ start_periodic_resettodr(); #if NWSDISPLAY > 0 rw_exit_write(&sc->sc_lck); wsdisplay_resume(); rw_enter_write(&sc->sc_lck); #endif /* NWSDISPLAY > 0 */ sys_sync(curproc, NULL, NULL); /* Restore hw.setperf */ if (cpu_setperf != NULL) cpu_setperf(perflevel); acpi_record_event(sc, APM_NORMAL_RESUME); acpi_indicator(sc, ACPI_SST_WORKING); /* If we woke up but all the lids are closed, go back to sleep */ if (acpibtn_numopenlids() == 0 && lid_action != 0) acpi_addtask(sc, acpi_sleep_task, sc, sleepmode); fail_tts: return (error); } /* XXX * We are going to do AML execution but are not in the acpi thread. * We do not know if the acpi thread is sleeping on acpiec in some * intermediate context. Wish us luck. */ void acpi_powerdown(void) { int state = ACPI_STATE_S5, s; struct acpi_softc *sc = acpi_softc; if (acpi_enabled == 0) return; s = splhigh(); disable_intr(); cold = 1; /* 1st powerdown AML step: _PTS(tostate) */ aml_node_setval(sc, sc->sc_pts, state); acpi_disable_allgpes(sc); acpi_enable_wakegpes(sc, state); /* 2nd powerdown AML step: _GTS(tostate) */ aml_node_setval(sc, sc->sc_gts, state); acpi_sleep_pm(sc, state); panic("acpi S5 transition did not happen"); while (1) ; } int acpi_map_address(struct acpi_softc *sc, struct acpi_gas *gas, bus_addr_t base, bus_size_t size, bus_space_handle_t *pioh, bus_space_tag_t *piot) { int iospace = GAS_SYSTEM_IOSPACE; /* No GAS structure, default to I/O space */ if (gas != NULL) { base += gas->address; iospace = gas->address_space_id; } switch (iospace) { case GAS_SYSTEM_MEMORY: *piot = sc->sc_memt; break; case GAS_SYSTEM_IOSPACE: *piot = sc->sc_iot; break; default: return -1; } if (bus_space_map(*piot, base, size, 0, pioh)) return -1; return 0; } #endif /* SMALL_KERNEL */ void acpi_wakeup(void *arg) { struct acpi_softc *sc = (struct acpi_softc *)arg; sc->sc_threadwaiting = 0; wakeup(sc); } void acpi_thread(void *arg) { struct acpi_thread *thread = arg; struct acpi_softc *sc = thread->sc; extern int aml_busy; int s; /* AML/SMI cannot be trusted -- only run on the BSP */ sched_peg_curproc(&cpu_info_primary); rw_enter_write(&sc->sc_lck); /* * If we have an interrupt handler, we can get notification * when certain status bits changes in the ACPI registers, * so let us enable some events we can forward to userland */ if (sc->sc_interrupt) { int16_t en; dnprintf(1,"slpbtn:%c pwrbtn:%c\n", sc->sc_fadt->flags & FADT_SLP_BUTTON ? 'n' : 'y', sc->sc_fadt->flags & FADT_PWR_BUTTON ? 'n' : 'y'); dnprintf(10, "Enabling acpi interrupts...\n"); sc->sc_threadwaiting = 1; /* Enable Sleep/Power buttons if they exist */ s = spltty(); en = acpi_read_pmreg(sc, ACPIREG_PM1_EN, 0); if (!(sc->sc_fadt->flags & FADT_PWR_BUTTON)) en |= ACPI_PM1_PWRBTN_EN; if (!(sc->sc_fadt->flags & FADT_SLP_BUTTON)) en |= ACPI_PM1_SLPBTN_EN; acpi_write_pmreg(sc, ACPIREG_PM1_EN, 0, en); /* Enable handled GPEs here */ acpi_enable_rungpes(sc); splx(s); } while (thread->running) { s = spltty(); while (sc->sc_threadwaiting) { dnprintf(10, "acpi thread going to sleep...\n"); rw_exit_write(&sc->sc_lck); tsleep(sc, PWAIT, "acpi0", 0); rw_enter_write(&sc->sc_lck); } sc->sc_threadwaiting = 1; splx(s); if (aml_busy) { panic("thread woke up to find aml was busy"); continue; } /* Run ACPI taskqueue */ while(acpi_dotask(acpi_softc)) ; } free(thread, M_DEVBUF, sizeof(*thread)); kthread_exit(0); } void acpi_create_thread(void *arg) { struct acpi_softc *sc = arg; if (kthread_create(acpi_thread, sc->sc_thread, NULL, DEVNAME(sc)) != 0) printf("%s: unable to create isr thread, GPEs disabled\n", DEVNAME(sc)); } int acpi_foundec(struct aml_node *node, void *arg) { struct acpi_softc *sc = (struct acpi_softc *)arg; struct device *self = (struct device *)arg; const char *dev; struct aml_value res; struct acpi_attach_args aaa; if (aml_evalnode(sc, node, 0, NULL, &res) != 0) return 0; switch (res.type) { case AML_OBJTYPE_STRING: dev = res.v_string; break; case AML_OBJTYPE_INTEGER: dev = aml_eisaid(aml_val2int(&res)); break; default: dev = "unknown"; break; } if (strcmp(dev, ACPI_DEV_ECD)) return 0; /* Check if we're already attached */ if (sc->sc_ec && sc->sc_ec->sc_devnode == node->parent) return 0; memset(&aaa, 0, sizeof(aaa)); aaa.aaa_iot = sc->sc_iot; aaa.aaa_memt = sc->sc_memt; aaa.aaa_node = node->parent; aaa.aaa_dev = dev; aaa.aaa_name = "acpiec"; config_found(self, &aaa, acpi_print); aml_freevalue(&res); return 0; } int acpi_foundsony(struct aml_node *node, void *arg) { struct acpi_softc *sc = (struct acpi_softc *)arg; struct device *self = (struct device *)arg; struct acpi_attach_args aaa; memset(&aaa, 0, sizeof(aaa)); aaa.aaa_iot = sc->sc_iot; aaa.aaa_memt = sc->sc_memt; aaa.aaa_node = node->parent; aaa.aaa_name = "acpisony"; config_found(self, &aaa, acpi_print); return 0; } int acpi_parsehid(struct aml_node *node, void *arg, char *outcdev, char *outdev, size_t devlen) { struct acpi_softc *sc = (struct acpi_softc *)arg; struct aml_value res; const char *dev; /* NB aml_eisaid returns a static buffer, this must come first */ if (aml_evalname(acpi_softc, node->parent, "_CID", 0, NULL, &res) == 0) { switch (res.type) { case AML_OBJTYPE_STRING: dev = res.v_string; break; case AML_OBJTYPE_INTEGER: dev = aml_eisaid(aml_val2int(&res)); break; default: dev = "unknown"; break; } strlcpy(outcdev, dev, devlen); aml_freevalue(&res); dnprintf(10, "compatible with device: %s\n", outcdev); } else { outcdev[0] = '\0'; } dnprintf(10, "found hid device: %s ", node->parent->name); if (aml_evalnode(sc, node, 0, NULL, &res) != 0) return (1); switch (res.type) { case AML_OBJTYPE_STRING: dev = res.v_string; break; case AML_OBJTYPE_INTEGER: dev = aml_eisaid(aml_val2int(&res)); break; default: dev = "unknown"; break; } dnprintf(10, " device: %s\n", dev); strlcpy(outdev, dev, devlen); aml_freevalue(&res); return (0); } /* Devices for which we don't want to attach a driver */ const char *acpi_skip_hids[] = { "INT0800", /* Intel 82802Firmware Hub Device */ "PNP0000", /* 8259-compatible Programmable Interrupt Controller */ "PNP0001", /* EISA Interrupt Controller */ "PNP0100", /* PC-class System Timer */ "PNP0103", /* HPET System Timer */ "PNP0200", /* PC-class DMA Controller */ "PNP0201", /* EISA DMA Controller */ "PNP0800", /* Microsoft Sound System Compatible Device */ "PNP0A03", /* PCI Bus */ "PNP0A08", /* PCI Express Bus */ "PNP0C01", /* System Board */ "PNP0C02", /* PNP Motherboard Resources */ "PNP0C04", /* x87-compatible Floating Point Processing Unit */ "PNP0C09", /* Embedded Controller Device */ "PNP0C0F", /* PCI Interrupt Link Device */ NULL }; /* ISA devices for which we attach a driver later */ const char *acpi_isa_hids[] = { "PNP0303", /* IBM Enhanced Keyboard (101/102-key, PS/2 Mouse) */ "PNP0400", /* Standard LPT Parallel Port */ "PNP0401", /* ECP Parallel Port */ "PNP0501", /* 16550A-compatible COM Serial Port */ "PNP0700", /* PC-class Floppy Disk Controller */ "PNP0F03", /* Microsoft PS/2-style Mouse */ "PNP0F13", /* PS/2 Mouse */ NULL }; void acpi_attach_deps(struct acpi_softc *sc, struct aml_node *node) { struct aml_value res; struct aml_node *dep; int i; if (aml_evalname(sc, node, "_DEP", 0, NULL, &res)) return; if (res.type != AML_OBJTYPE_PACKAGE) return; for (i = 0; i < res.length; i++) { if (res.v_package[i]->type != AML_OBJTYPE_STRING) continue; dep = aml_searchrel(node, res.v_package[i]->v_string); if (dep == NULL || dep->attached) continue; dep = aml_searchname(dep, "_HID"); if (dep) acpi_foundhid(dep, sc); } aml_freevalue(&res); } int acpi_foundhid(struct aml_node *node, void *arg) { struct acpi_softc *sc = (struct acpi_softc *)arg; struct device *self = (struct device *)arg; char cdev[32]; char dev[32]; struct acpi_attach_args aaa; int64_t sta; #ifndef SMALL_KERNEL int i; #endif if (acpi_parsehid(node, arg, cdev, dev, sizeof(dev)) != 0) return (0); if (aml_evalinteger(sc, node->parent, "_STA", 0, NULL, &sta)) sta = STA_PRESENT | STA_ENABLED | STA_DEV_OK | 0x1000; if ((sta & STA_PRESENT) == 0) return (0); acpi_attach_deps(sc, node->parent); memset(&aaa, 0, sizeof(aaa)); aaa.aaa_iot = sc->sc_iot; aaa.aaa_memt = sc->sc_memt; aaa.aaa_node = node->parent; aaa.aaa_dev = dev; if (acpi_matchhids(&aaa, acpi_skip_hids, "none") || acpi_matchhids(&aaa, acpi_isa_hids, "none")) return (0); #ifndef SMALL_KERNEL if (!strcmp(cdev, ACPI_DEV_MOUSE)) { for (i = 0; i < nitems(sbtn_pnp); i++) { if (!strcmp(dev, sbtn_pnp[i])) { mouse_has_softbtn = 1; break; } } } #endif if (!node->parent->attached) { node->parent->attached = 1; config_found(self, &aaa, acpi_print); } return (0); } #ifndef SMALL_KERNEL int acpi_founddock(struct aml_node *node, void *arg) { struct acpi_softc *sc = (struct acpi_softc *)arg; struct device *self = (struct device *)arg; struct acpi_attach_args aaa; dnprintf(10, "found dock entry: %s\n", node->parent->name); memset(&aaa, 0, sizeof(aaa)); aaa.aaa_iot = sc->sc_iot; aaa.aaa_memt = sc->sc_memt; aaa.aaa_node = node->parent; aaa.aaa_name = "acpidock"; config_found(self, &aaa, acpi_print); return 0; } int acpi_foundvideo(struct aml_node *node, void *arg) { struct acpi_softc *sc = (struct acpi_softc *)arg; struct device *self = (struct device *)arg; struct acpi_attach_args aaa; memset(&aaa, 0, sizeof(aaa)); aaa.aaa_iot = sc->sc_iot; aaa.aaa_memt = sc->sc_memt; aaa.aaa_node = node->parent; aaa.aaa_name = "acpivideo"; config_found(self, &aaa, acpi_print); return (0); } int acpi_foundsbs(struct aml_node *node, void *arg) { struct acpi_softc *sc = (struct acpi_softc *)arg; struct device *self = (struct device *)arg; char cdev[32], dev[32]; struct acpi_attach_args aaa; int64_t sta; if (acpi_parsehid(node, arg, cdev, dev, sizeof(dev)) != 0) return (0); if (aml_evalinteger(sc, node->parent, "_STA", 0, NULL, &sta)) sta = STA_PRESENT | STA_ENABLED | STA_DEV_OK | 0x1000; if ((sta & STA_PRESENT) == 0) return (0); acpi_attach_deps(sc, node->parent); if (strcmp(dev, ACPI_DEV_SBS) != 0) return (0); if (node->parent->attached) return (0); memset(&aaa, 0, sizeof(aaa)); aaa.aaa_iot = sc->sc_iot; aaa.aaa_memt = sc->sc_memt; aaa.aaa_node = node->parent; aaa.aaa_dev = dev; config_found(self, &aaa, acpi_print); node->parent->attached = 1; return (0); } int acpiopen(dev_t dev, int flag, int mode, struct proc *p) { int error = 0; struct acpi_softc *sc; int s; if (!acpi_cd.cd_ndevs || APMUNIT(dev) != 0 || !(sc = acpi_cd.cd_devs[APMUNIT(dev)])) return (ENXIO); s = spltty(); switch (APMDEV(dev)) { case APMDEV_CTL: if (!(flag & FWRITE)) { error = EINVAL; break; } if (sc->sc_flags & SCFLAG_OWRITE) { error = EBUSY; break; } sc->sc_flags |= SCFLAG_OWRITE; break; case APMDEV_NORMAL: if (!(flag & FREAD) || (flag & FWRITE)) { error = EINVAL; break; } sc->sc_flags |= SCFLAG_OREAD; break; default: error = ENXIO; break; } splx(s); return (error); } int acpiclose(dev_t dev, int flag, int mode, struct proc *p) { int error = 0; struct acpi_softc *sc; int s; if (!acpi_cd.cd_ndevs || APMUNIT(dev) != 0 || !(sc = acpi_cd.cd_devs[APMUNIT(dev)])) return (ENXIO); s = spltty(); switch (APMDEV(dev)) { case APMDEV_CTL: sc->sc_flags &= ~SCFLAG_OWRITE; break; case APMDEV_NORMAL: sc->sc_flags &= ~SCFLAG_OREAD; break; default: error = ENXIO; break; } splx(s); return (error); } int acpiioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) { int error = 0; struct acpi_softc *sc; struct acpi_ac *ac; struct acpi_bat *bat; struct acpi_sbs *sbs; struct apm_power_info *pi = (struct apm_power_info *)data; int bats; unsigned int remaining, rem, minutes, rate; int s; if (!acpi_cd.cd_ndevs || APMUNIT(dev) != 0 || !(sc = acpi_cd.cd_devs[APMUNIT(dev)])) return (ENXIO); s = spltty(); /* fake APM */ switch (cmd) { case APM_IOC_SUSPEND: case APM_IOC_STANDBY: if ((flag & FWRITE) == 0) { error = EBADF; break; } acpi_addtask(sc, acpi_sleep_task, sc, ACPI_SLEEP_SUSPEND); acpi_wakeup(sc); break; #ifdef HIBERNATE case APM_IOC_HIBERNATE: if ((error = suser(p)) != 0) break; if ((flag & FWRITE) == 0) { error = EBADF; break; } if (get_hibernate_io_function(swdevt[0].sw_dev) == NULL) { error = EOPNOTSUPP; break; } acpi_addtask(sc, acpi_sleep_task, sc, ACPI_SLEEP_HIBERNATE); acpi_wakeup(sc); break; #endif case APM_IOC_GETPOWER: /* A/C */ pi->ac_state = APM_AC_UNKNOWN; SLIST_FOREACH(ac, &sc->sc_ac, aac_link) { if (ac->aac_softc->sc_ac_stat == PSR_ONLINE) pi->ac_state = APM_AC_ON; else if (ac->aac_softc->sc_ac_stat == PSR_OFFLINE) if (pi->ac_state == APM_AC_UNKNOWN) pi->ac_state = APM_AC_OFF; } /* battery */ pi->battery_state = APM_BATT_UNKNOWN; pi->battery_life = 0; pi->minutes_left = 0; bats = 0; remaining = rem = 0; minutes = 0; rate = 0; SLIST_FOREACH(bat, &sc->sc_bat, aba_link) { if (bat->aba_softc->sc_bat_present == 0) continue; if (bat->aba_softc->sc_bix.bix_last_capacity == 0) continue; bats++; rem = (bat->aba_softc->sc_bst.bst_capacity * 100) / bat->aba_softc->sc_bix.bix_last_capacity; if (rem > 100) rem = 100; remaining += rem; if (bat->aba_softc->sc_bst.bst_rate == BST_UNKNOWN) continue; else if (bat->aba_softc->sc_bst.bst_rate > 1) rate = bat->aba_softc->sc_bst.bst_rate; minutes += bat->aba_softc->sc_bst.bst_capacity; } SLIST_FOREACH(sbs, &sc->sc_sbs, asbs_link) { if (sbs->asbs_softc->sc_batteries_present == 0) continue; if (sbs->asbs_softc->sc_battery.rel_charge == 0) continue; bats++; rem = sbs->asbs_softc->sc_battery.rel_charge; if (rem > 100) rem = 100; remaining += rem; if (sbs->asbs_softc->sc_battery.run_time == ACPISBS_VALUE_UNKNOWN) continue; rate = 60; /* XXX */ minutes += sbs->asbs_softc->sc_battery.run_time; } if (bats == 0) { pi->battery_state = APM_BATTERY_ABSENT; pi->battery_life = 0; pi->minutes_left = (unsigned int)-1; break; } if (pi->ac_state == APM_AC_ON || rate == 0) pi->minutes_left = (unsigned int)-1; else pi->minutes_left = 60 * minutes / rate; /* running on battery */ pi->battery_life = remaining / bats; if (pi->battery_life > 50) pi->battery_state = APM_BATT_HIGH; else if (pi->battery_life > 25) pi->battery_state = APM_BATT_LOW; else pi->battery_state = APM_BATT_CRITICAL; break; default: error = ENOTTY; } splx(s); return (error); } void acpi_filtdetach(struct knote *); int acpi_filtread(struct knote *, long); struct filterops acpiread_filtops = { 1, NULL, acpi_filtdetach, acpi_filtread }; int acpi_evindex; int acpi_record_event(struct acpi_softc *sc, u_int type) { if ((sc->sc_flags & SCFLAG_OPEN) == 0) return (1); acpi_evindex++; KNOTE(sc->sc_note, APM_EVENT_COMPOSE(type, acpi_evindex)); return (0); } void acpi_filtdetach(struct knote *kn) { struct acpi_softc *sc = kn->kn_hook; int s; s = spltty(); SLIST_REMOVE(sc->sc_note, kn, knote, kn_selnext); splx(s); } int acpi_filtread(struct knote *kn, long hint) { /* XXX weird kqueue_scan() semantics */ if (hint && !kn->kn_data) kn->kn_data = hint; return (1); } int acpikqfilter(dev_t dev, struct knote *kn) { struct acpi_softc *sc; int s; if (!acpi_cd.cd_ndevs || APMUNIT(dev) != 0 || !(sc = acpi_cd.cd_devs[APMUNIT(dev)])) return (ENXIO); switch (kn->kn_filter) { case EVFILT_READ: kn->kn_fop = &acpiread_filtops; break; default: return (EINVAL); } kn->kn_hook = sc; s = spltty(); SLIST_INSERT_HEAD(sc->sc_note, kn, kn_selnext); splx(s); return (0); } #else /* SMALL_KERNEL */ int acpiopen(dev_t dev, int flag, int mode, struct proc *p) { return (ENXIO); } int acpiclose(dev_t dev, int flag, int mode, struct proc *p) { return (ENXIO); } int acpiioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) { return (ENXIO); } int acpikqfilter(dev_t dev, struct knote *kn) { return (ENXIO); } #endif /* SMALL_KERNEL */