diff options
Diffstat (limited to 'drivers/acpi/utilities/utinit.c')
| -rw-r--r-- | drivers/acpi/utilities/utinit.c | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/drivers/acpi/utilities/utinit.c b/drivers/acpi/utilities/utinit.c new file mode 100644 index 000000000000..bdbadaf48d29 --- /dev/null +++ b/drivers/acpi/utilities/utinit.c @@ -0,0 +1,266 @@ +/****************************************************************************** + * + * Module Name: utinit - Common ACPI subsystem initialization + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2005, 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") + + +/******************************************************************************* + * + * FUNCTION: acpi_ut_fadt_register_error + * + * PARAMETERS: *register_name - Pointer to string identifying register + * Value - Actual register contents value + * acpi_test_spec_section - TDS section containing assertion + * acpi_assertion - Assertion number being tested + * + * RETURN: AE_BAD_VALUE + * + * DESCRIPTION: Display failure message and link failure to TDS assertion + * + ******************************************************************************/ + +static void +acpi_ut_fadt_register_error ( + char *register_name, + u32 value, + acpi_size offset) +{ + + ACPI_REPORT_WARNING ( + ("Invalid FADT value %s=%X at offset %X FADT=%p\n", + register_name, value, (u32) 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 + * + ******************************************************************************/ + +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_MEM_FREE (gpe_block->event_info); + ACPI_MEM_FREE (gpe_block->register_info); + ACPI_MEM_FREE (gpe_block); + + gpe_block = next_gpe_block; + } + next_gpe_xrupt_info = gpe_xrupt_info->next; + ACPI_MEM_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_DEBUG_PRINT ((ACPI_DB_ERROR, "ACPI Subsystem is already terminated\n")); + return_VOID; + } + + /* Subsystem appears active, go ahead and shut it down */ + + acpi_gbl_shutdown = TRUE; + 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_purge_cached_objects (); + + /* Debug only - display leftover memory allocation, if any */ + +#ifdef ACPI_DBG_TRACK_ALLOCATIONS + acpi_ut_dump_allocations (ACPI_UINT32_MAX, NULL); +#endif + + return_VOID; +} + + |