/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2020 Alexander Motin * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include "opt_acpi.h" #include "opt_pci.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct apei_ge { union { ACPI_HEST_GENERIC v1; ACPI_HEST_GENERIC_V2 v2; }; int res_type; int res_rid; struct resource *res; int res2_type; int res2_rid; struct resource *res2; uint8_t *buf, *copybuf; TAILQ_ENTRY(apei_ge) link; TAILQ_ENTRY(apei_ge) nlink; }; /* NMI */ struct apei_nges { void *swi_ih; TAILQ_HEAD(, apei_ge) ges; } *apei_nmi_nges; /* Interrupt */ struct apei_iges { TAILQ_HEAD(, apei_ge) ges; }; /* Polling */ struct apei_pges { sbintime_t interval; struct callout poll; TAILQ_HEAD(, apei_ge) ges; }; struct apei_softc { ACPI_TABLE_HEST *hest; TAILQ_HEAD(, apei_ge) ges; struct apei_nges nges; struct apei_iges iges; struct apei_pges pges[32]; }; struct apei_mem_error { uint64_t ValidationBits; uint64_t ErrorStatus; uint64_t PhysicalAddress; uint64_t PhysicalAddressMask; uint16_t Node; uint16_t Card; uint16_t Module; uint16_t Bank; uint16_t Device; uint16_t Row; uint16_t Column; uint16_t BitPosition; uint64_t RequesterID; uint64_t ResponderID; uint64_t TargetID; uint8_t MemoryErrorType; uint8_t Extended; uint16_t RankNumber; uint16_t CardHandle; uint16_t ModuleHandle; }; struct apei_pcie_error { uint64_t ValidationBits; uint32_t PortType; uint32_t Version; uint32_t CommandStatus; uint32_t Reserved; uint8_t DeviceID[16]; uint8_t DeviceSerialNumber[8]; uint8_t BridgeControlStatus[4]; uint8_t CapabilityStructure[60]; uint8_t AERInfo[96]; }; #ifdef __i386__ static __inline uint64_t apei_bus_read_8(struct resource *res, bus_size_t offset) { return (bus_read_4(res, offset) | ((uint64_t)bus_read_4(res, offset + 4)) << 32); } static __inline void apei_bus_write_8(struct resource *res, bus_size_t offset, uint64_t val) { bus_write_4(res, offset, val); bus_write_4(res, offset + 4, val >> 32); } #define READ8(r, o) apei_bus_read_8((r), (o)) #define WRITE8(r, o, v) apei_bus_write_8((r), (o), (v)) #else #define READ8(r, o) bus_read_8((r), (o)) #define WRITE8(r, o, v) bus_write_8((r), (o), (v)) #endif #define GED_SIZE(ged) ((ged)->Revision >= 0x300 ? \ sizeof(ACPI_HEST_GENERIC_DATA_V300) : sizeof(ACPI_HEST_GENERIC_DATA)) #define GED_DATA(ged) ((uint8_t *)(ged) + GED_SIZE(ged)) #define PGE_ID(ge) (fls(MAX(1, (ge)->v1.Notify.PollInterval)) - 1) int apei_nmi_handler(void); static const char * apei_severity(uint32_t s) { switch (s) { case ACPI_HEST_GEN_ERROR_RECOVERABLE: return ("Recoverable"); case ACPI_HEST_GEN_ERROR_FATAL: return ("Fatal"); case ACPI_HEST_GEN_ERROR_CORRECTED: return ("Corrected"); case ACPI_HEST_GEN_ERROR_NONE: return ("Informational"); } return ("???"); } static int apei_mem_handler(ACPI_HEST_GENERIC_DATA *ged) { struct apei_mem_error *p = (struct apei_mem_error *)GED_DATA(ged); printf("APEI %s Memory Error:\n", apei_severity(ged->ErrorSeverity)); if (p->ValidationBits & 0x01) printf(" Error Status: 0x%jx\n", p->ErrorStatus); if (p->ValidationBits & 0x02) printf(" Physical Address: 0x%jx\n", p->PhysicalAddress); if (p->ValidationBits & 0x04) printf(" Physical Address Mask: 0x%jx\n", p->PhysicalAddressMask); if (p->ValidationBits & 0x08) printf(" Node: %u\n", p->Node); if (p->ValidationBits & 0x10) printf(" Card: %u\n", p->Card); if (p->ValidationBits & 0x20) printf(" Module: %u\n", p->Module); if (p->ValidationBits & 0x40) printf(" Bank: %u\n", p->Bank); if (p->ValidationBits & 0x80) printf(" Device: %u\n", p->Device); if (p->ValidationBits & 0x100) printf(" Row: %u\n", p->Row); if (p->ValidationBits & 0x200) printf(" Column: %u\n", p->Column); if (p->ValidationBits & 0x400) printf(" Bit Position: %u\n", p->BitPosition); if (p->ValidationBits & 0x800) printf(" Requester ID: 0x%jx\n", p->RequesterID); if (p->ValidationBits & 0x1000) printf(" Responder ID: 0x%jx\n", p->ResponderID); if (p->ValidationBits & 0x2000) printf(" Target ID: 0x%jx\n", p->TargetID); if (p->ValidationBits & 0x4000) printf(" Memory Error Type: %u\n", p->MemoryErrorType); if (p->ValidationBits & 0x8000) printf(" Rank Number: %u\n", p->RankNumber); if (p->ValidationBits & 0x10000) printf(" Card Handle: 0x%x\n", p->CardHandle); if (p->ValidationBits & 0x20000) printf(" Module Handle: 0x%x\n", p->ModuleHandle); if (p->ValidationBits & 0x40000) printf(" Extended Row: %u\n", (uint32_t)(p->Extended & 0x3) << 16 | p->Row); if (p->ValidationBits & 0x80000) printf(" Bank Group: %u\n", p->Bank >> 8); if (p->ValidationBits & 0x100000) printf(" Bank Address: %u\n", p->Bank & 0xff); if (p->ValidationBits & 0x200000) printf(" Chip Identification: %u\n", (p->Extended >> 5) & 0x7); return (0); } static int apei_pcie_handler(ACPI_HEST_GENERIC_DATA *ged) { struct apei_pcie_error *p = (struct apei_pcie_error *)GED_DATA(ged); int h = 0, off; #ifdef DEV_PCI device_t dev; int sev; if ((p->ValidationBits & 0x8) == 0x8) { mtx_lock(&Giant); dev = pci_find_dbsf((uint32_t)p->DeviceID[10] << 8 | p->DeviceID[9], p->DeviceID[11], p->DeviceID[8], p->DeviceID[7]); if (dev != NULL) { switch (ged->ErrorSeverity) { case ACPI_HEST_GEN_ERROR_FATAL: sev = PCIEM_STA_FATAL_ERROR; break; case ACPI_HEST_GEN_ERROR_RECOVERABLE: sev = PCIEM_STA_NON_FATAL_ERROR; break; default: sev = PCIEM_STA_CORRECTABLE_ERROR; break; } pcie_apei_error(dev, sev, (p->ValidationBits & 0x80) ? p->AERInfo : NULL); h = 1; } mtx_unlock(&Giant); } if (h) return (h); #endif printf("APEI %s PCIe Error:\n", apei_severity(ged->ErrorSeverity)); if (p->ValidationBits & 0x01) printf(" Port Type: %u\n", p->PortType); if (p->ValidationBits & 0x02) printf(" Version: %x\n", p->Version); if (p->ValidationBits & 0x04) printf(" Command Status: 0x%08x\n", p->CommandStatus); if (p->ValidationBits & 0x08) { printf(" DeviceID:"); for (off = 0; off < sizeof(p->DeviceID); off++) printf(" %02x", p->DeviceID[off]); printf("\n"); } if (p->ValidationBits & 0x10) { printf(" Device Serial Number:"); for (off = 0; off < sizeof(p->DeviceSerialNumber); off++) printf(" %02x", p->DeviceSerialNumber[off]); printf("\n"); } if (p->ValidationBits & 0x20) { printf(" Bridge Control Status:"); for (off = 0; off < sizeof(p->BridgeControlStatus); off++) printf(" %02x", p->BridgeControlStatus[off]); printf("\n"); } if (p->ValidationBits & 0x40) { printf(" Capability Structure:\n"); for (off = 0; off < sizeof(p->CapabilityStructure); off++) { printf(" %02x", p->CapabilityStructure[off]); if ((off % 16) == 15 || off + 1 == sizeof(p->CapabilityStructure)) printf("\n"); } } if (p->ValidationBits & 0x80) { printf(" AER Info:\n"); for (off = 0; off < sizeof(p->AERInfo); off++) { printf(" %02x", p->AERInfo[off]); if ((off % 16) == 15 || off + 1 == sizeof(p->AERInfo)) printf("\n"); } } return (h); } static void apei_ged_handler(ACPI_HEST_GENERIC_DATA *ged) { ACPI_HEST_GENERIC_DATA_V300 *ged3 = (ACPI_HEST_GENERIC_DATA_V300 *)ged; /* A5BC1114-6F64-4EDE-B863-3E83ED7C83B1 */ static uint8_t mem_uuid[ACPI_UUID_LENGTH] = { 0x14, 0x11, 0xBC, 0xA5, 0x64, 0x6F, 0xDE, 0x4E, 0xB8, 0x63, 0x3E, 0x83, 0xED, 0x7C, 0x83, 0xB1 }; /* D995E954-BBC1-430F-AD91-B44DCB3C6F35 */ static uint8_t pcie_uuid[ACPI_UUID_LENGTH] = { 0x54, 0xE9, 0x95, 0xD9, 0xC1, 0xBB, 0x0F, 0x43, 0xAD, 0x91, 0xB4, 0x4D, 0xCB, 0x3C, 0x6F, 0x35 }; uint8_t *t; int h = 0, off; if (memcmp(mem_uuid, ged->SectionType, ACPI_UUID_LENGTH) == 0) { h = apei_mem_handler(ged); } else if (memcmp(pcie_uuid, ged->SectionType, ACPI_UUID_LENGTH) == 0) { h = apei_pcie_handler(ged); } else { t = ged->SectionType; printf("APEI %s Error %02x%02x%02x%02x-%02x%02x-" "%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x:\n", apei_severity(ged->ErrorSeverity), t[3], t[2], t[1], t[0], t[5], t[4], t[7], t[6], t[8], t[9], t[10], t[11], t[12], t[13], t[14], t[15]); printf(" Error Data:\n"); t = (uint8_t *)GED_DATA(ged); for (off = 0; off < ged->ErrorDataLength; off++) { printf(" %02x", t[off]); if ((off % 16) == 15 || off + 1 == ged->ErrorDataLength) printf("\n"); } } if (h) return; printf(" Flags: 0x%x\n", ged->Flags); if (ged->ValidationBits & ACPI_HEST_GEN_VALID_FRU_ID) { t = ged->FruId; printf(" FRU Id: %02x%02x%02x%02x-%02x%02x-%02x%02x-" "%02x%02x-%02x%02x%02x%02x%02x%02x\n", t[3], t[2], t[1], t[0], t[5], t[4], t[7], t[6], t[8], t[9], t[10], t[11], t[12], t[13], t[14], t[15]); } if (ged->ValidationBits & ACPI_HEST_GEN_VALID_FRU_STRING) printf(" FRU Text: %.20s\n", ged->FruText); if (ged->Revision >= 0x300 && ged->ValidationBits & ACPI_HEST_GEN_VALID_TIMESTAMP) printf(" Timestamp: %016jx\n", ged3->TimeStamp); } static int apei_ge_handler(struct apei_ge *ge, bool copy) { uint8_t *buf = copy ? ge->copybuf : ge->buf; ACPI_HEST_GENERIC_STATUS *ges = (ACPI_HEST_GENERIC_STATUS *)buf; ACPI_HEST_GENERIC_DATA *ged; size_t off, len; uint32_t sev; int i, c; if (ges == NULL || ges->BlockStatus == 0) return (0); c = (ges->BlockStatus >> 4) & 0x3ff; sev = ges->ErrorSeverity; /* Process error entries. */ len = MIN(ge->v1.ErrorBlockLength - sizeof(*ges), ges->DataLength); for (off = i = 0; i < c && off + sizeof(*ged) <= len; i++) { ged = (ACPI_HEST_GENERIC_DATA *)&buf[sizeof(*ges) + off]; if ((uint64_t)GED_SIZE(ged) + ged->ErrorDataLength > len - off) break; apei_ged_handler(ged); off += GED_SIZE(ged) + ged->ErrorDataLength; } /* Acknowledge the error has been processed. */ ges->BlockStatus = 0; if (!copy && ge->v1.Header.Type == ACPI_HEST_TYPE_GENERIC_ERROR_V2 && ge->res2) { uint64_t val = READ8(ge->res2, 0); val &= ge->v2.ReadAckPreserve; val |= ge->v2.ReadAckWrite; WRITE8(ge->res2, 0, val); } /* If ACPI told the error is fatal -- make it so. */ if (sev == ACPI_HEST_GEN_ERROR_FATAL) panic("APEI Fatal Hardware Error!"); return (1); } static void apei_nmi_swi(void *arg) { struct apei_nges *nges = arg; struct apei_ge *ge; TAILQ_FOREACH(ge, &nges->ges, nlink) apei_ge_handler(ge, true); } int apei_nmi_handler(void) { struct apei_nges *nges = apei_nmi_nges; struct apei_ge *ge; ACPI_HEST_GENERIC_STATUS *ges, *gesc; int handled = 0; if (nges == NULL) return (0); TAILQ_FOREACH(ge, &nges->ges, nlink) { ges = (ACPI_HEST_GENERIC_STATUS *)ge->buf; if (ges == NULL || ges->BlockStatus == 0) continue; /* If ACPI told the error is fatal -- make it so. */ if (ges->ErrorSeverity == ACPI_HEST_GEN_ERROR_FATAL) panic("APEI Fatal Hardware Error!"); /* Copy the buffer for later processing. */ gesc = (ACPI_HEST_GENERIC_STATUS *)ge->copybuf; if (gesc->BlockStatus == 0) memcpy(ge->copybuf, ge->buf, ge->v1.ErrorBlockLength); /* Acknowledge the error has been processed. */ ges->BlockStatus = 0; if (ge->v1.Header.Type == ACPI_HEST_TYPE_GENERIC_ERROR_V2 && ge->res2) { uint64_t val = READ8(ge->res2, 0); val &= ge->v2.ReadAckPreserve; val |= ge->v2.ReadAckWrite; WRITE8(ge->res2, 0, val); } handled = 1; } /* Schedule SWI for real handling. */ if (handled) swi_sched(nges->swi_ih, SWI_FROMNMI); return (handled); } static void apei_callout_handler(void *context) { struct apei_pges *pges = context; struct apei_ge *ge; TAILQ_FOREACH(ge, &pges->ges, nlink) apei_ge_handler(ge, false); callout_schedule_sbt(&pges->poll, pges->interval, pges->interval, 0); } static void apei_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) { device_t dev = context; struct apei_softc *sc = device_get_softc(dev); struct apei_ge *ge; TAILQ_FOREACH(ge, &sc->iges.ges, nlink) apei_ge_handler(ge, false); } static int hest_parse_structure(struct apei_softc *sc, void *addr, int remaining) { ACPI_HEST_HEADER *hdr = addr; struct apei_ge *ge; if (remaining < (int)sizeof(ACPI_HEST_HEADER)) return (-1); switch (hdr->Type) { case ACPI_HEST_TYPE_IA32_CHECK: { ACPI_HEST_IA_MACHINE_CHECK *s = addr; return (sizeof(*s) + s->NumHardwareBanks * sizeof(ACPI_HEST_IA_ERROR_BANK)); } case ACPI_HEST_TYPE_IA32_CORRECTED_CHECK: { ACPI_HEST_IA_CORRECTED *s = addr; return (sizeof(*s) + s->NumHardwareBanks * sizeof(ACPI_HEST_IA_ERROR_BANK)); } case ACPI_HEST_TYPE_IA32_NMI: { ACPI_HEST_IA_NMI *s = addr; return (sizeof(*s)); } case ACPI_HEST_TYPE_AER_ROOT_PORT: { ACPI_HEST_AER_ROOT *s = addr; return (sizeof(*s)); } case ACPI_HEST_TYPE_AER_ENDPOINT: { ACPI_HEST_AER *s = addr; return (sizeof(*s)); } case ACPI_HEST_TYPE_AER_BRIDGE: { ACPI_HEST_AER_BRIDGE *s = addr; return (sizeof(*s)); } case ACPI_HEST_TYPE_GENERIC_ERROR: { ACPI_HEST_GENERIC *s = addr; ge = malloc(sizeof(*ge), M_DEVBUF, M_WAITOK | M_ZERO); ge->v1 = *s; TAILQ_INSERT_TAIL(&sc->ges, ge, link); return (sizeof(*s)); } case ACPI_HEST_TYPE_GENERIC_ERROR_V2: { ACPI_HEST_GENERIC_V2 *s = addr; ge = malloc(sizeof(*ge), M_DEVBUF, M_WAITOK | M_ZERO); ge->v2 = *s; TAILQ_INSERT_TAIL(&sc->ges, ge, link); return (sizeof(*s)); } case ACPI_HEST_TYPE_IA32_DEFERRED_CHECK: { ACPI_HEST_IA_DEFERRED_CHECK *s = addr; return (sizeof(*s) + s->NumHardwareBanks * sizeof(ACPI_HEST_IA_ERROR_BANK)); } default: return (-1); } } static void hest_parse_table(struct apei_softc *sc) { ACPI_TABLE_HEST *hest = sc->hest; char *cp; int remaining, consumed; remaining = hest->Header.Length - sizeof(ACPI_TABLE_HEST); while (remaining > 0) { cp = (char *)hest + hest->Header.Length - remaining; consumed = hest_parse_structure(sc, cp, remaining); if (consumed <= 0) break; else remaining -= consumed; } } static char *apei_ids[] = { "PNP0C33", NULL }; static ACPI_STATUS apei_find(ACPI_HANDLE handle, UINT32 level, void *context, void **status) { int *found = (int *)status; char **ids; for (ids = apei_ids; *ids != NULL; ids++) { if (acpi_MatchHid(handle, *ids)) { *found = 1; break; } } return (AE_OK); } static void apei_identify(driver_t *driver, device_t parent) { device_t child; int found; ACPI_TABLE_HEADER *hest; ACPI_STATUS status; if (acpi_disabled("apei")) return; /* Without HEST table we have nothing to do. */ status = AcpiGetTable(ACPI_SIG_HEST, 0, &hest); if (ACPI_FAILURE(status)) return; AcpiPutTable(hest); /* Only one APEI device can exist. */ if (devclass_get_device(devclass_find("apei"), 0)) return; /* Search for ACPI error device to be used. */ found = 0; AcpiWalkNamespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, 100, apei_find, NULL, NULL, (void *)&found); if (found) return; /* If not found - create a fake one. */ child = BUS_ADD_CHILD(parent, 2, "apei", 0); if (child == NULL) printf("%s: can't add child\n", __func__); } static int apei_probe(device_t dev) { ACPI_TABLE_HEADER *hest; ACPI_STATUS status; int rv; if (acpi_disabled("apei")) return (ENXIO); if (acpi_get_handle(dev) != NULL) { rv = ACPI_ID_PROBE(device_get_parent(dev), dev, apei_ids, NULL); if (rv > 0) return (rv); } else rv = 0; /* Without HEST table we have nothing to do. */ status = AcpiGetTable(ACPI_SIG_HEST, 0, &hest); if (ACPI_FAILURE(status)) return (ENXIO); AcpiPutTable(hest); device_set_desc(dev, "ACPI Platform Error Interface"); return (rv); } static int apei_attach(device_t dev) { struct apei_softc *sc = device_get_softc(dev); struct apei_pges *pges; struct apei_ge *ge; ACPI_STATUS status; int rid; TAILQ_INIT(&sc->ges); TAILQ_INIT(&sc->nges.ges); TAILQ_INIT(&sc->iges.ges); for (int i = 0; i < nitems(sc->pges); i++) { pges = &sc->pges[i]; pges->interval = SBT_1MS << i; callout_init(&pges->poll, 1); TAILQ_INIT(&pges->ges); } /* Search and parse HEST table. */ status = AcpiGetTable(ACPI_SIG_HEST, 0, (ACPI_TABLE_HEADER **)&sc->hest); if (ACPI_FAILURE(status)) return (ENXIO); hest_parse_table(sc); AcpiPutTable((ACPI_TABLE_HEADER *)sc->hest); rid = 0; TAILQ_FOREACH(ge, &sc->ges, link) { ge->res_rid = rid++; acpi_bus_alloc_gas(dev, &ge->res_type, &ge->res_rid, &ge->v1.ErrorStatusAddress, &ge->res, 0); if (ge->res) { ge->buf = pmap_mapdev_attr(READ8(ge->res, 0), ge->v1.ErrorBlockLength, VM_MEMATTR_WRITE_COMBINING); } else { device_printf(dev, "Can't allocate status resource.\n"); } if (ge->v1.Header.Type == ACPI_HEST_TYPE_GENERIC_ERROR_V2) { ge->res2_rid = rid++; acpi_bus_alloc_gas(dev, &ge->res2_type, &ge->res2_rid, &ge->v2.ReadAckRegister, &ge->res2, 0); if (ge->res2 == NULL) device_printf(dev, "Can't allocate ack resource.\n"); } if (ge->v1.Notify.Type == ACPI_HEST_NOTIFY_POLLED) { pges = &sc->pges[PGE_ID(ge)]; TAILQ_INSERT_TAIL(&sc->pges[PGE_ID(ge)].ges, ge, nlink); callout_reset_sbt(&pges->poll, pges->interval, pges->interval, apei_callout_handler, pges, 0); } else if (ge->v1.Notify.Type == ACPI_HEST_NOTIFY_SCI || ge->v1.Notify.Type == ACPI_HEST_NOTIFY_GPIO || ge->v1.Notify.Type == ACPI_HEST_NOTIFY_GSIV) { TAILQ_INSERT_TAIL(&sc->iges.ges, ge, nlink); } else if (ge->v1.Notify.Type == ACPI_HEST_NOTIFY_NMI) { ge->copybuf = malloc(ge->v1.ErrorBlockLength, M_DEVBUF, M_WAITOK | M_ZERO); TAILQ_INSERT_TAIL(&sc->nges.ges, ge, nlink); if (sc->nges.swi_ih == NULL) { swi_add(&clk_intr_event, "apei", apei_nmi_swi, &sc->nges, SWI_CLOCK, INTR_MPSAFE, &sc->nges.swi_ih); apei_nmi_nges = &sc->nges; apei_nmi = apei_nmi_handler; } } } if (acpi_get_handle(dev) != NULL) { AcpiInstallNotifyHandler(acpi_get_handle(dev), ACPI_DEVICE_NOTIFY, apei_notify_handler, dev); } return (0); } static int apei_detach(device_t dev) { struct apei_softc *sc = device_get_softc(dev); struct apei_ge *ge; apei_nmi = NULL; apei_nmi_nges = NULL; if (sc->nges.swi_ih != NULL) { swi_remove(&sc->nges.swi_ih); sc->nges.swi_ih = NULL; } if (acpi_get_handle(dev) != NULL) { AcpiRemoveNotifyHandler(acpi_get_handle(dev), ACPI_DEVICE_NOTIFY, apei_notify_handler); } for (int i = 0; i < nitems(sc->pges); i++) callout_drain(&sc->pges[i].poll); while ((ge = TAILQ_FIRST(&sc->ges)) != NULL) { TAILQ_REMOVE(&sc->ges, ge, link); if (ge->res) { bus_release_resource(dev, ge->res_type, ge->res_rid, ge->res); } if (ge->res2) { bus_release_resource(dev, ge->res2_type, ge->res2_rid, ge->res2); } if (ge->v1.Notify.Type == ACPI_HEST_NOTIFY_POLLED) { TAILQ_REMOVE(&sc->pges[PGE_ID(ge)].ges, ge, nlink); } else if (ge->v1.Notify.Type == ACPI_HEST_NOTIFY_SCI || ge->v1.Notify.Type == ACPI_HEST_NOTIFY_GPIO || ge->v1.Notify.Type == ACPI_HEST_NOTIFY_GSIV) { TAILQ_REMOVE(&sc->iges.ges, ge, nlink); } else if (ge->v1.Notify.Type == ACPI_HEST_NOTIFY_NMI) { TAILQ_REMOVE(&sc->nges.ges, ge, nlink); free(ge->copybuf, M_DEVBUF); } if (ge->buf) { pmap_unmapdev((vm_offset_t)ge->buf, ge->v1.ErrorBlockLength); } free(ge, M_DEVBUF); } return (0); } static device_method_t apei_methods[] = { /* Device interface */ DEVMETHOD(device_identify, apei_identify), DEVMETHOD(device_probe, apei_probe), DEVMETHOD(device_attach, apei_attach), DEVMETHOD(device_detach, apei_detach), DEVMETHOD_END }; static driver_t apei_driver = { "apei", apei_methods, sizeof(struct apei_softc), }; DRIVER_MODULE(apei, acpi, apei_driver, 0, 0); MODULE_DEPEND(apei, acpi, 1, 1, 1);