/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2007 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* * Solaris x86 ACPI CA services */ #pragma ident "%Z%%M% %I% %E% SMI" #include #include #include #include #include #include #include #include #include #include #include /* * */ static struct modlmisc modlmisc = { &mod_miscops, "ACPI interpreter", }; static struct modlinkage modlinkage = { MODREV_1, /* MODREV_1 manual */ (void *)&modlmisc, /* module linkage */ NULL, /* list terminator */ }; /* * Local data */ static kmutex_t acpica_module_lock; /* * State of acpica subsystem * After successful initialization, will be ACPICA_INITIALIZED */ int acpica_init_state = ACPICA_NOT_INITIALIZED; /* * Following are set by acpica_process_user_options() * * acpica_enable = FALSE prevents initialization of ACPI CA * completely * * acpi_init_level determines level of ACPI CA functionality * enabled in acpica_init() */ int acpica_enable; UINT32 acpi_init_level; /* * Non-zero enables lax behavior with respect to some * common ACPI BIOS issues; see ACPI CA documentation * Setting this to zero causes ACPI CA to enforce strict * compliance with ACPI specification */ int acpica_enable_interpreter_slack = 1; /* * For non-DEBUG builds, set the ACPI CA debug level to 0 * to quiet chatty BIOS output into /var/adm/messages * Field-patchable for diagnostic use. */ #ifdef DEBUG int acpica_muzzle_debug_output = 0; #else int acpica_muzzle_debug_output = 1; #endif int _init(void) { int error = EBUSY; int status; mutex_init(&acpica_module_lock, NULL, MUTEX_DRIVER, NULL); if ((error = mod_install(&modlinkage)) != 0) { mutex_destroy(&acpica_module_lock); } AcpiGbl_EnableInterpreterSlack = (acpica_enable_interpreter_slack != 0); if ((status = AcpiInitializeSubsystem()) != AE_OK) { cmn_err(CE_WARN, "!acpica: error pre-init:1:%d", status); } return (error); } int _info(struct modinfo *modinfop) { return (mod_info(&modlinkage, modinfop)); } int _fini(void) { /* * acpica module is never unloaded at run-time; there's always * a PSM depending on it, at the very least */ return (EBUSY); } /* * Install acpica-provided address-space handlers */ static int acpica_install_handlers() { ACPI_STATUS rv = AE_OK; /* * Install ACPI CA default handlers */ if (AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL) != AE_OK) { cmn_err(CE_WARN, "!acpica: no default handler for" " system memory"); rv = AE_ERROR; } if (AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL) != AE_OK) { cmn_err(CE_WARN, "!acpica: no default handler for" " system I/O"); rv = AE_ERROR; } if (AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT, ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL) != AE_OK) { cmn_err(CE_WARN, "!acpica: no default handler for" " PCI Config"); rv = AE_ERROR; } return (rv); } /* * Find the BIOS date, and return TRUE if supplied * date is same or later than the BIOS date, or FALSE * if the BIOS date can't be fetched for any reason */ static int acpica_check_bios_date(int yy, int mm, int dd) { char *datep; int bios_year, bios_month, bios_day; /* If firmware has no bios, skip the check */ if (ddi_prop_exists(DDI_DEV_T_ANY, ddi_root_node(), 0, "bios-free")) return (TRUE); /* * PC BIOSes contain a string in the form of * "mm/dd/yy" at absolute address 0xffff5, * where mm, dd and yy are all ASCII digits. * We map the string, pluck out the values, * and accept all BIOSes from 1 Jan 1999 on * as valid. */ if ((int)AcpiOsMapMemory(0xffff5, 8, (void **) &datep) != AE_OK) return (FALSE); /* year */ bios_year = ((int)(*(datep + 6) - '0') * 10) + (*(datep + 7) - '0'); /* month */ bios_month = ((int)(*datep - '0') * 10) + (*(datep + 1) - '0'); /* day */ bios_day = ((int)(*(datep + 3) - '0') * 10) + (*(datep + 4) - '0'); AcpiOsUnmapMemory((void *) datep, 8); if (bios_year < 0 || bios_year > 99 || bios_month < 0 || bios_month > 99 || bios_day < 0 || bios_day > 99) { /* non-digit chars in BIOS date */ return (FALSE); } /* * Adjust for 2-digit year; note to grand-children: * need a new scheme before 2080 rolls around */ bios_year += (bios_year >= 80 && bios_year <= 99) ? 1900 : 2000; if (bios_year < yy) return (FALSE); else if (bios_year > yy) return (TRUE); if (bios_month < mm) return (FALSE); else if (bios_month > mm) return (TRUE); if (bios_day < dd) return (FALSE); return (TRUE); } /* * Check for Metropolis systems with BIOSes older than 10/12/04 * return TRUE if BIOS requires legacy mode, FALSE otherwise */ static int acpica_metro_old_bios() { ACPI_TABLE_HEADER *fadt; /* get the FADT */ if (AcpiGetFirmwareTable(FADT_SIG, 1, ACPI_LOGICAL_ADDRESSING, (ACPI_TABLE_HEADER **)&fadt) != AE_OK) return (FALSE); /* compare OEM Table ID to "SUNmetro" - no match, return false */ if (strncmp("SUNmetro", fadt->OemTableId, 8)) return (FALSE); /* On a Metro - return FALSE if later than 10/12/04 */ return (!acpica_check_bios_date(2004, 10, 12)); } /* * Process acpi-user-options property if present */ static void acpica_process_user_options() { static int processed = 0; int acpi_user_options; char *acpi_prop; /* * return if acpi-user-options has already been processed */ if (processed) return; else processed = 1; /* converts acpi-user-options from type string to int, if any */ if (ddi_prop_lookup_string(DDI_DEV_T_ANY, ddi_root_node(), DDI_PROP_DONTPASS, "acpi-user-options", &acpi_prop) == DDI_PROP_SUCCESS) { long data; int ret; ret = ddi_strtol(acpi_prop, NULL, 0, &data); if (ret == 0) { e_ddi_prop_remove(DDI_DEV_T_NONE, ddi_root_node(), "acpi-user-options"); e_ddi_prop_update_int(DDI_DEV_T_NONE, ddi_root_node(), "acpi-user-options", data); } ddi_prop_free(acpi_prop); } /* * fetch the optional options property */ acpi_user_options = ddi_prop_get_int(DDI_DEV_T_ANY, ddi_root_node(), 0, "acpi-user-options", 0); /* * Note that 'off' has precedence over 'on' * Also note - all cases of ACPI_OUSER_MASK * provided here, no default: case is present */ switch (acpi_user_options & ACPI_OUSER_MASK) { case ACPI_OUSER_DFLT: acpica_enable = acpica_check_bios_date(1999, 1, 1); break; case ACPI_OUSER_ON: acpica_enable = TRUE; break; case ACPI_OUSER_OFF: case ACPI_OUSER_OFF | ACPI_OUSER_ON: acpica_enable = FALSE; break; } acpi_init_level = ACPI_FULL_INITIALIZATION; /* * special test here; may be generalized in the * future - test for a machines that are known to * work only in legacy mode, and set OUSER_LEGACY if * we're on one */ if (acpica_metro_old_bios()) acpi_user_options |= ACPI_OUSER_LEGACY; /* * If legacy mode is specified, set initialization * options to avoid entering ACPI mode and hooking SCI * - basically try to act like legacy acpi_intp */ if ((acpi_user_options & ACPI_OUSER_LEGACY) != 0) acpi_init_level |= (ACPI_NO_ACPI_ENABLE | ACPI_NO_HANDLER_INIT); /* * modify default ACPI CA debug output level for non-DEBUG builds * (to avoid BIOS debug chatter in /var/adm/messages) */ if (acpica_muzzle_debug_output) AcpiDbgLevel = 0; } /* * Initialize the CA subsystem if it hasn't been done already */ int acpica_init() { ACPI_STATUS status; /* * Make sure user options are processed, * then fail to initialize if ACPI CA has been * disabled */ acpica_process_user_options(); if (!acpica_enable) return (AE_ERROR); mutex_enter(&acpica_module_lock); if (acpica_init_state == ACPICA_NOT_INITIALIZED) { if ((status = AcpiLoadTables()) != AE_OK) { goto error; } if ((status = acpica_install_handlers()) != AE_OK) { goto error; } if ((status = AcpiEnableSubsystem(acpi_init_level)) != AE_OK) { goto error; } if ((status = AcpiInitializeObjects(0)) != AE_OK) { goto error; } /* * Initialize EC */ acpica_ec_init(); acpica_init_state = ACPICA_INITIALIZED; error: if (acpica_init_state != ACPICA_INITIALIZED) { cmn_err(CE_NOTE, "!failed to initialize" " ACPI services"); } } else status = AE_OK; /* * Set acpi-status to 13 if acpica has been initialized successfully. * This indicates that acpica is up and running. This variable name * and value were chosen in order to remain compatible with acpi_intp. */ e_ddi_prop_update_int(DDI_DEV_T_NONE, ddi_root_node(), "acpi-status", (status == AE_OK) ? (ACPI_BOOT_INIT | ACPI_BOOT_ENABLE | ACPI_BOOT_BOOTCONF) : 0); mutex_exit(&acpica_module_lock); return (status); } /* * SCI handling */ ACPI_STATUS acpica_get_sci(int *sci_irq, iflag_t *sci_flags) { APIC_HEADER *ap; MULTIPLE_APIC_TABLE *mat; MADT_INTERRUPT_OVERRIDE *mio; FADT_DESCRIPTOR *fadt; int madt_seen, madt_size; /* * Make sure user options are processed, * then return error if ACPI CA has been * disabled or system is not running in ACPI * and won't need/understand SCI */ acpica_process_user_options(); if ((!acpica_enable) || (acpi_init_level & ACPI_NO_ACPI_ENABLE)) return (AE_ERROR); /* * according to Intel ACPI developers, SCI * conforms to PCI bus conventions; level/low * unless otherwise directed by overrides. */ sci_flags->intr_el = INTR_EL_LEVEL; sci_flags->intr_po = INTR_PO_ACTIVE_LOW; sci_flags->bustype = BUS_PCI; /* we *do* conform to PCI */ /* get the SCI from the FADT */ if (AcpiGetFirmwareTable(FADT_SIG, 1, ACPI_LOGICAL_ADDRESSING, (ACPI_TABLE_HEADER **)&fadt) != AE_OK) return (AE_ERROR); *sci_irq = fadt->SciInt; /* search for ISOs that modify it */ /* if we don't find a MADT, that's OK; no ISOs then */ if (AcpiGetFirmwareTable(APIC_SIG, 1, ACPI_LOGICAL_ADDRESSING, (ACPI_TABLE_HEADER **) &mat) != AE_OK) { return (AE_OK); } ap = (APIC_HEADER *) (mat + 1); madt_size = mat->Length; madt_seen = sizeof (*mat); while (madt_seen < madt_size) { switch (ap->Type) { case APIC_XRUPT_OVERRIDE: mio = (MADT_INTERRUPT_OVERRIDE *) ap; if (mio->Source == *sci_irq) { *sci_irq = mio->Interrupt; sci_flags->intr_el = mio->TriggerMode; sci_flags->intr_po = mio->Polarity; } break; } /* advance to next entry */ madt_seen += ap->Length; ap = (APIC_HEADER *)(((char *)ap) + ap->Length); } /* * One more check; if ISO said "conform", revert to default */ if (sci_flags->intr_el == INTR_EL_CONFORM) sci_flags->intr_el = INTR_EL_LEVEL; if (sci_flags->intr_po == INTR_PO_CONFORM) sci_flags->intr_po = INTR_PO_ACTIVE_LOW; return (AE_OK); }