/****************************************************************************** * * Module Name: utinit - Common ACPI subsystem initialization * *****************************************************************************/ /* * Copyright (C) 2000 - 2006, R. Byron Moore * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * NO WARRANTY * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES. */ #include #include #include #include #define _COMPONENT ACPI_UTILITIES ACPI_MODULE_NAME("utinit") /* Local prototypes */ static void acpi_ut_fadt_register_error(char *register_name, u32 value, u8 offset); static void acpi_ut_terminate(void); /******************************************************************************* * * FUNCTION: acpi_ut_fadt_register_error * * PARAMETERS: register_name - Pointer to string identifying register * Value - Actual register contents value * Offset - Byte offset in the FADT * * RETURN: AE_BAD_VALUE * * DESCRIPTION: Display failure message * ******************************************************************************/ static void acpi_ut_fadt_register_error(char *register_name, u32 value, u8 offset) { ACPI_WARNING((AE_INFO, "Invalid FADT value %s=%X at offset %X in FADT=%p", register_name, value, offset, &acpi_gbl_FADT)); } /****************************************************************************** * * FUNCTION: acpi_ut_validate_fadt * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Validate various ACPI registers in the FADT * ******************************************************************************/ acpi_status acpi_ut_validate_fadt(void) { /* * Verify Fixed ACPI Description Table fields, * but don't abort on any problems, just display error */ if (acpi_gbl_FADT.pm1_event_length < 4) { acpi_ut_fadt_register_error("PM1_EVT_LEN", (u32) acpi_gbl_FADT. pm1_event_length, ACPI_FADT_OFFSET(pm1_event_length)); } if (!acpi_gbl_FADT.pm1_control_length) { acpi_ut_fadt_register_error("PM1_CNT_LEN", 0, ACPI_FADT_OFFSET (pm1_control_length)); } if (!acpi_gbl_FADT.xpm1a_event_block.address) { acpi_ut_fadt_register_error("X_PM1a_EVT_BLK", 0, ACPI_FADT_OFFSET(xpm1a_event_block. address)); } if (!acpi_gbl_FADT.xpm1a_control_block.address) { acpi_ut_fadt_register_error("X_PM1a_CNT_BLK", 0, ACPI_FADT_OFFSET (xpm1a_control_block.address)); } if (!acpi_gbl_FADT.xpm_timer_block.address) { acpi_ut_fadt_register_error("X_PM_TMR_BLK", 0, ACPI_FADT_OFFSET(xpm_timer_block. address)); } if ((acpi_gbl_FADT.xpm2_control_block.address && !acpi_gbl_FADT.pm2_control_length)) { acpi_ut_fadt_register_error("PM2_CNT_LEN", (u32) acpi_gbl_FADT. pm2_control_length, ACPI_FADT_OFFSET (pm2_control_length)); } if (acpi_gbl_FADT.pm_timer_length < 4) { acpi_ut_fadt_register_error("PM_TM_LEN", (u32) acpi_gbl_FADT.pm_timer_length, ACPI_FADT_OFFSET(pm_timer_length)); } /* Length of GPE blocks must be a multiple of 2 */ if (acpi_gbl_FADT.xgpe0_block.address && (acpi_gbl_FADT.gpe0_block_length & 1)) { acpi_ut_fadt_register_error("(x)GPE0_BLK_LEN", (u32) acpi_gbl_FADT. gpe0_block_length, ACPI_FADT_OFFSET (gpe0_block_length)); } if (acpi_gbl_FADT.xgpe1_block.address && (acpi_gbl_FADT.gpe1_block_length & 1)) { acpi_ut_fadt_register_error("(x)GPE1_BLK_LEN", (u32) acpi_gbl_FADT. gpe1_block_length, ACPI_FADT_OFFSET (gpe1_block_length)); } return (AE_OK); } /****************************************************************************** * * FUNCTION: acpi_ut_terminate * * PARAMETERS: none * * RETURN: none * * DESCRIPTION: Free global memory * ******************************************************************************/ static void acpi_ut_terminate(void) { struct acpi_gpe_block_info *gpe_block; struct acpi_gpe_block_info *next_gpe_block; struct acpi_gpe_xrupt_info *gpe_xrupt_info; struct acpi_gpe_xrupt_info *next_gpe_xrupt_info; ACPI_FUNCTION_TRACE(ut_terminate); /* Free global GPE blocks and related info structures */ gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head; while (gpe_xrupt_info) { gpe_block = gpe_xrupt_info->gpe_block_list_head; while (gpe_block) { next_gpe_block = gpe_block->next; ACPI_FREE(gpe_block->event_info); ACPI_FREE(gpe_block->register_info); ACPI_FREE(gpe_block); gpe_block = next_gpe_block; } next_gpe_xrupt_info = gpe_xrupt_info->next; ACPI_FREE(gpe_xrupt_info); gpe_xrupt_info = next_gpe_xrupt_info; } return_VOID; } /******************************************************************************* * * FUNCTION: acpi_ut_subsystem_shutdown * * PARAMETERS: none * * RETURN: none * * DESCRIPTION: Shutdown the various subsystems. Don't delete the mutex * objects here -- because the AML debugger may be still running. * ******************************************************************************/ void acpi_ut_subsystem_shutdown(void) { ACPI_FUNCTION_TRACE(ut_subsystem_shutdown); /* Just exit if subsystem is already shutdown */ if (acpi_gbl_shutdown) { ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated")); return_VOID; } /* Subsystem appears active, go ahead and shut it down */ acpi_gbl_shutdown = TRUE; acpi_gbl_startup_flags = 0; ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n")); /* Close the acpi_event Handling */ acpi_ev_terminate(); /* Close the Namespace */ acpi_ns_terminate(); /* Delete the ACPI tables */ acpi_tb_terminate(); /* Close the globals */ acpi_ut_terminate(); /* Purge the local caches */ (void)acpi_ut_delete_caches(); return_VOID; }