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/******************************************************************************
*
* 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 <acpi/acpi.h>
#include <acpi/acnamesp.h>
#include <acpi/acevents.h>
#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 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_evt_len < 4) {
acpi_ut_fadt_register_error("PM1_EVT_LEN",
(u32) acpi_gbl_FADT->pm1_evt_len,
ACPI_FADT_OFFSET(pm1_evt_len));
}
if (!acpi_gbl_FADT->pm1_cnt_len) {
acpi_ut_fadt_register_error("PM1_CNT_LEN", 0,
ACPI_FADT_OFFSET(pm1_cnt_len));
}
if (!acpi_gbl_FADT->xpm1a_evt_blk.address) {
acpi_ut_fadt_register_error("X_PM1a_EVT_BLK", 0,
ACPI_FADT_OFFSET(xpm1a_evt_blk.
address));
}
if (!acpi_gbl_FADT->xpm1a_cnt_blk.address) {
acpi_ut_fadt_register_error("X_PM1a_CNT_BLK", 0,
ACPI_FADT_OFFSET(xpm1a_cnt_blk.
address));
}
if (!acpi_gbl_FADT->xpm_tmr_blk.address) {
acpi_ut_fadt_register_error("X_PM_TMR_BLK", 0,
ACPI_FADT_OFFSET(xpm_tmr_blk.
address));
}
if ((acpi_gbl_FADT->xpm2_cnt_blk.address &&
!acpi_gbl_FADT->pm2_cnt_len)) {
acpi_ut_fadt_register_error("PM2_CNT_LEN",
(u32) acpi_gbl_FADT->pm2_cnt_len,
ACPI_FADT_OFFSET(pm2_cnt_len));
}
if (acpi_gbl_FADT->pm_tm_len < 4) {
acpi_ut_fadt_register_error("PM_TM_LEN",
(u32) acpi_gbl_FADT->pm_tm_len,
ACPI_FADT_OFFSET(pm_tm_len));
}
/* Length of GPE blocks must be a multiple of 2 */
if (acpi_gbl_FADT->xgpe0_blk.address &&
(acpi_gbl_FADT->gpe0_blk_len & 1)) {
acpi_ut_fadt_register_error("(x)GPE0_BLK_LEN",
(u32) acpi_gbl_FADT->gpe0_blk_len,
ACPI_FADT_OFFSET(gpe0_blk_len));
}
if (acpi_gbl_FADT->xgpe1_blk.address &&
(acpi_gbl_FADT->gpe1_blk_len & 1)) {
acpi_ut_fadt_register_error("(x)GPE1_BLK_LEN",
(u32) acpi_gbl_FADT->gpe1_blk_len,
ACPI_FADT_OFFSET(gpe1_blk_len));
}
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 tables, etc. */
/* 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();
/* Close the globals */
acpi_ut_terminate();
/* Purge the local caches */
(void)acpi_ut_delete_caches();
return_VOID;
}
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