257 lines
7.5 KiB
C
257 lines
7.5 KiB
C
/******************************************************************************
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*
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* Module Name: utinit - Common ACPI subsystem initialization
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2006, R. Byron Moore
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include <acpi/acnamesp.h>
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#include <acpi/acevents.h>
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#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME("utinit")
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/* Local prototypes */
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static void
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acpi_ut_fadt_register_error(char *register_name, u32 value, acpi_size offset);
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static void acpi_ut_terminate(void);
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_fadt_register_error
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*
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* PARAMETERS: register_name - Pointer to string identifying register
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* Value - Actual register contents value
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* Offset - Byte offset in the FADT
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*
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* RETURN: AE_BAD_VALUE
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*
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* DESCRIPTION: Display failure message
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*
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******************************************************************************/
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static void
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acpi_ut_fadt_register_error(char *register_name, u32 value, acpi_size offset)
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{
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ACPI_WARNING((AE_INFO,
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"Invalid FADT value %s=%X at offset %X FADT=%p",
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register_name, value, (u32) offset, acpi_gbl_FADT));
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}
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/******************************************************************************
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*
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* FUNCTION: acpi_ut_validate_fadt
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Validate various ACPI registers in the FADT
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*
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******************************************************************************/
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acpi_status acpi_ut_validate_fadt(void)
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{
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/*
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* Verify Fixed ACPI Description Table fields,
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* but don't abort on any problems, just display error
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*/
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if (acpi_gbl_FADT->pm1_evt_len < 4) {
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acpi_ut_fadt_register_error("PM1_EVT_LEN",
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(u32) acpi_gbl_FADT->pm1_evt_len,
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ACPI_FADT_OFFSET(pm1_evt_len));
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}
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if (!acpi_gbl_FADT->pm1_cnt_len) {
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acpi_ut_fadt_register_error("PM1_CNT_LEN", 0,
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ACPI_FADT_OFFSET(pm1_cnt_len));
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}
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if (!acpi_gbl_FADT->xpm1a_evt_blk.address) {
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acpi_ut_fadt_register_error("X_PM1a_EVT_BLK", 0,
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ACPI_FADT_OFFSET(xpm1a_evt_blk.
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address));
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}
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if (!acpi_gbl_FADT->xpm1a_cnt_blk.address) {
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acpi_ut_fadt_register_error("X_PM1a_CNT_BLK", 0,
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ACPI_FADT_OFFSET(xpm1a_cnt_blk.
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address));
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}
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if (!acpi_gbl_FADT->xpm_tmr_blk.address) {
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acpi_ut_fadt_register_error("X_PM_TMR_BLK", 0,
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ACPI_FADT_OFFSET(xpm_tmr_blk.
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address));
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}
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if ((acpi_gbl_FADT->xpm2_cnt_blk.address &&
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!acpi_gbl_FADT->pm2_cnt_len)) {
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acpi_ut_fadt_register_error("PM2_CNT_LEN",
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(u32) acpi_gbl_FADT->pm2_cnt_len,
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ACPI_FADT_OFFSET(pm2_cnt_len));
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}
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if (acpi_gbl_FADT->pm_tm_len < 4) {
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acpi_ut_fadt_register_error("PM_TM_LEN",
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(u32) acpi_gbl_FADT->pm_tm_len,
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ACPI_FADT_OFFSET(pm_tm_len));
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}
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/* Length of GPE blocks must be a multiple of 2 */
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if (acpi_gbl_FADT->xgpe0_blk.address &&
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(acpi_gbl_FADT->gpe0_blk_len & 1)) {
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acpi_ut_fadt_register_error("(x)GPE0_BLK_LEN",
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(u32) acpi_gbl_FADT->gpe0_blk_len,
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ACPI_FADT_OFFSET(gpe0_blk_len));
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}
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if (acpi_gbl_FADT->xgpe1_blk.address &&
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(acpi_gbl_FADT->gpe1_blk_len & 1)) {
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acpi_ut_fadt_register_error("(x)GPE1_BLK_LEN",
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(u32) acpi_gbl_FADT->gpe1_blk_len,
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ACPI_FADT_OFFSET(gpe1_blk_len));
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}
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return (AE_OK);
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}
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/******************************************************************************
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*
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* FUNCTION: acpi_ut_terminate
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*
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* PARAMETERS: none
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*
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* RETURN: none
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*
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* DESCRIPTION: Free global memory
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*
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******************************************************************************/
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static void acpi_ut_terminate(void)
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{
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struct acpi_gpe_block_info *gpe_block;
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struct acpi_gpe_block_info *next_gpe_block;
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struct acpi_gpe_xrupt_info *gpe_xrupt_info;
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struct acpi_gpe_xrupt_info *next_gpe_xrupt_info;
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ACPI_FUNCTION_TRACE("ut_terminate");
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/* Free global tables, etc. */
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/* Free global GPE blocks and related info structures */
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gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
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while (gpe_xrupt_info) {
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gpe_block = gpe_xrupt_info->gpe_block_list_head;
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while (gpe_block) {
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next_gpe_block = gpe_block->next;
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ACPI_MEM_FREE(gpe_block->event_info);
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ACPI_MEM_FREE(gpe_block->register_info);
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ACPI_MEM_FREE(gpe_block);
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gpe_block = next_gpe_block;
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}
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next_gpe_xrupt_info = gpe_xrupt_info->next;
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ACPI_MEM_FREE(gpe_xrupt_info);
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gpe_xrupt_info = next_gpe_xrupt_info;
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}
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return_VOID;
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_subsystem_shutdown
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*
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* PARAMETERS: none
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*
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* RETURN: none
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*
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* DESCRIPTION: Shutdown the various subsystems. Don't delete the mutex
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* objects here -- because the AML debugger may be still running.
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*
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******************************************************************************/
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void acpi_ut_subsystem_shutdown(void)
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{
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ACPI_FUNCTION_TRACE("ut_subsystem_shutdown");
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/* Just exit if subsystem is already shutdown */
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if (acpi_gbl_shutdown) {
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ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated"));
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return_VOID;
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}
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/* Subsystem appears active, go ahead and shut it down */
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acpi_gbl_shutdown = TRUE;
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ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
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/* Close the acpi_event Handling */
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acpi_ev_terminate();
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/* Close the Namespace */
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acpi_ns_terminate();
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/* Close the globals */
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acpi_ut_terminate();
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/* Purge the local caches */
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(void)acpi_ut_delete_caches();
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/* Debug only - display leftover memory allocation, if any */
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#ifdef ACPI_DBG_TRACK_ALLOCATIONS
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acpi_ut_dump_allocations(ACPI_UINT32_MAX, NULL);
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#endif
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return_VOID;
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}
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