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/******************************************************************************

 *

 * Module Name: tbinstal - ACPI table installation and removal

 *

 *****************************************************************************/

/*

 * Copyright (C) 2000 - 2007, 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/actables.h>

#define _COMPONENT          ACPI_TABLES

ACPI_MODULE_NAME("tbinstal")

/******************************************************************************

 *

 * FUNCTION:    acpi_tb_verify_table

 *

 * PARAMETERS:  table_desc          - table

 *

 * RETURN:      Status

 *

 * DESCRIPTION: this function is called to verify and map table

 *

 *****************************************************************************/

acpi_status acpi_tb_verify_table(struct acpi_table_desc *table_desc)

{

        acpi_status status = AE_OK;

        ACPI_FUNCTION_TRACE(tb_verify_table);

        /* Map the table if necessary */

        if (!table_desc->pointer) {

                if ((table_desc->flags & ACPI_TABLE_ORIGIN_MASK) ==

                    ACPI_TABLE_ORIGIN_MAPPED) {

                        table_desc->pointer =

                            acpi_os_map_memory(table_desc->address,

                                               table_desc->length);

                }

                if (!table_desc->pointer) {

                        return_ACPI_STATUS(AE_NO_MEMORY);

                }

        }

        /* FACS is the odd table, has no standard ACPI header and no checksum */

        if (!ACPI_COMPARE_NAME(&table_desc->signature, ACPI_SIG_FACS)) {

                /* Always calculate checksum, ignore bad checksum if requested */

                status =

                    acpi_tb_verify_checksum(table_desc->pointer,

                                            table_desc->length);

        }

        return_ACPI_STATUS(status);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_add_table

 *

 * PARAMETERS:  table_desc          - Table descriptor

 *              table_index         - Where the table index is returned

 *

 * RETURN:      Status

 *

 * DESCRIPTION: This function is called to add the ACPI table

 *

 ******************************************************************************/

acpi_status

acpi_tb_add_table(struct acpi_table_desc *table_desc,

                  acpi_native_uint * table_index)

{

        acpi_native_uint i;

        acpi_native_uint length;

        acpi_status status = AE_OK;

        ACPI_FUNCTION_TRACE(tb_add_table);

        if (!table_desc->pointer) {

                status = acpi_tb_verify_table(table_desc);

                if (ACPI_FAILURE(status) || !table_desc->pointer) {

                        return_ACPI_STATUS(status);

                }

        }

        /* The table must be either an SSDT or a PSDT or an OEMx */

        if ((!ACPI_COMPARE_NAME(table_desc->pointer->signature, ACPI_SIG_PSDT))

            &&

            (!ACPI_COMPARE_NAME(table_desc->pointer->signature, ACPI_SIG_SSDT))

            && (strncmp(table_desc->pointer->signature, "OEM", 3))) {

                ACPI_ERROR((AE_INFO,

                            "Table has invalid signature [%4.4s], must be SSDT, PSDT or OEMx",

                            table_desc->pointer->signature));

                return_ACPI_STATUS(AE_BAD_SIGNATURE);

        }

        (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);

        /* Check if table is already registered */

        for (i = 0; i < acpi_gbl_root_table_list.count; ++i) {

                if (!acpi_gbl_root_table_list.tables[i].pointer) {

                        status =

                            acpi_tb_verify_table(&acpi_gbl_root_table_list.

                                                 tables[i]);

                        if (ACPI_FAILURE(status)

                            || !acpi_gbl_root_table_list.tables[i].pointer) {

                                continue;

                        }

                }

                length = ACPI_MIN(table_desc->length,

                                  acpi_gbl_root_table_list.tables[i].length);

                if (ACPI_MEMCMP(table_desc->pointer,

                                acpi_gbl_root_table_list.tables[i].pointer,

                                length)) {

                        continue;

                }

                /* Table is already registered */

                acpi_tb_delete_table(table_desc);

                *table_index = i;

                goto release;

        }

        /*

         * Add the table to the global table list

         */

        status = acpi_tb_store_table(table_desc->address, table_desc->pointer,

                                     table_desc->length, table_desc->flags,

                                     table_index);

        if (ACPI_FAILURE(status)) {

                goto release;

        }

        acpi_tb_print_table_header(table_desc->address, table_desc->pointer);

      release:

        (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);

        return_ACPI_STATUS(status);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_resize_root_table_list

 *

 * PARAMETERS:  None

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Expand the size of global table array

 *

 ******************************************************************************/

acpi_status acpi_tb_resize_root_table_list(void)

{

        struct acpi_table_desc *tables;

        ACPI_FUNCTION_TRACE(tb_resize_root_table_list);

        /* allow_resize flag is a parameter to acpi_initialize_tables */

        if (!(acpi_gbl_root_table_list.flags & ACPI_ROOT_ALLOW_RESIZE)) {

                ACPI_ERROR((AE_INFO,

                            "Resize of Root Table Array is not allowed"));

                return_ACPI_STATUS(AE_SUPPORT);

        }

        /* Increase the Table Array size */

        tables = ACPI_ALLOCATE_ZEROED((acpi_gbl_root_table_list.size +

                                       ACPI_ROOT_TABLE_SIZE_INCREMENT)

                                      * sizeof(struct acpi_table_desc));

        if (!tables) {

                ACPI_ERROR((AE_INFO,

                            "Could not allocate new root table array"));

                return_ACPI_STATUS(AE_NO_MEMORY);

        }

        /* Copy and free the previous table array */

        if (acpi_gbl_root_table_list.tables) {

                ACPI_MEMCPY(tables, acpi_gbl_root_table_list.tables,

                            acpi_gbl_root_table_list.size *

                            sizeof(struct acpi_table_desc));

                if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {

                        ACPI_FREE(acpi_gbl_root_table_list.tables);

                }

        }

        acpi_gbl_root_table_list.tables = tables;

        acpi_gbl_root_table_list.size += ACPI_ROOT_TABLE_SIZE_INCREMENT;

        acpi_gbl_root_table_list.flags |= (u8) ACPI_ROOT_ORIGIN_ALLOCATED;

        return_ACPI_STATUS(AE_OK);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_store_table

 *

 * PARAMETERS:  Address             - Table address

 *              Table               - Table header

 *              Length              - Table length

 *              Flags               - flags

 *

 * RETURN:      Status and table index.

 *

 * DESCRIPTION: Add an ACPI table to the global table list

 *

 ******************************************************************************/

acpi_status

acpi_tb_store_table(acpi_physical_address address,

                    struct acpi_table_header *table,

                    u32 length, u8 flags, acpi_native_uint * table_index)

{

        acpi_status status = AE_OK;

        /* Ensure that there is room for the table in the Root Table List */

        if (acpi_gbl_root_table_list.count >= acpi_gbl_root_table_list.size) {

                status = acpi_tb_resize_root_table_list();

                if (ACPI_FAILURE(status)) {

                        return (status);

                }

        }

        /* Initialize added table */

        acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].

            address = address;

        acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].

            pointer = table;

        acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].length =

            length;

        acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].

            owner_id = 0;

        acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].flags =

            flags;

        ACPI_MOVE_32_TO_32(&

                           (acpi_gbl_root_table_list.

                            tables[acpi_gbl_root_table_list.count].signature),

                           table->signature);

        *table_index = acpi_gbl_root_table_list.count;

        acpi_gbl_root_table_list.count++;

        return (status);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_delete_table

 *

 * PARAMETERS:  table_index         - Table index

 *

 * RETURN:      None

 *

 * DESCRIPTION: Delete one internal ACPI table

 *

 ******************************************************************************/

void acpi_tb_delete_table(struct acpi_table_desc *table_desc)

{

        /* Table must be mapped or allocated */

        if (!table_desc->pointer) {

                return;

        }

        switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {

        case ACPI_TABLE_ORIGIN_MAPPED:

                acpi_os_unmap_memory(table_desc->pointer, table_desc->length);

                break;

        case ACPI_TABLE_ORIGIN_ALLOCATED:

                ACPI_FREE(table_desc->pointer);

                break;

        default:;

        }

        table_desc->pointer = NULL;

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_terminate

 *

 * PARAMETERS:  None

 *

 * RETURN:      None

 *

 * DESCRIPTION: Delete all internal ACPI tables

 *

 ******************************************************************************/

void acpi_tb_terminate(void)

{

        acpi_native_uint i;

        ACPI_FUNCTION_TRACE(tb_terminate);

        (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);

        /* Delete the individual tables */

        for (i = 0; i < acpi_gbl_root_table_list.count; ++i) {

                acpi_tb_delete_table(&acpi_gbl_root_table_list.tables[i]);

        }

        /*

         * Delete the root table array if allocated locally. Array cannot be

         * mapped, so we don't need to check for that flag.

         */

        if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {

                ACPI_FREE(acpi_gbl_root_table_list.tables);

        }

        acpi_gbl_root_table_list.tables = NULL;

        acpi_gbl_root_table_list.flags = 0;

        acpi_gbl_root_table_list.count = 0;

        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ACPI Tables freed\n"));

        (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_delete_namespace_by_owner

 *

 * PARAMETERS:  table_index         - Table index

 *

 * RETURN:      None

 *

 * DESCRIPTION: Delete all namespace objects created when this table was loaded.

 *

 ******************************************************************************/

void acpi_tb_delete_namespace_by_owner(acpi_native_uint table_index)

{

        acpi_owner_id owner_id;

        (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);

        if (table_index < acpi_gbl_root_table_list.count) {

                owner_id =

                    acpi_gbl_root_table_list.tables[table_index].owner_id;

        } else {

                (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);

                return;

        }

        (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);

        acpi_ns_delete_namespace_by_owner(owner_id);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_allocate_owner_id

 *

 * PARAMETERS:  table_index         - Table index

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Allocates owner_id in table_desc

 *

 ******************************************************************************/

acpi_status acpi_tb_allocate_owner_id(acpi_native_uint table_index)

{

        acpi_status status = AE_BAD_PARAMETER;

        ACPI_FUNCTION_TRACE(tb_allocate_owner_id);

        (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);

        if (table_index < acpi_gbl_root_table_list.count) {

                status = acpi_ut_allocate_owner_id

                    (&(acpi_gbl_root_table_list.tables[table_index].owner_id));

        }

        (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);

        return_ACPI_STATUS(status);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_release_owner_id

 *

 * PARAMETERS:  table_index         - Table index

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Releases owner_id in table_desc

 *

 ******************************************************************************/

acpi_status acpi_tb_release_owner_id(acpi_native_uint table_index)

{

        acpi_status status = AE_BAD_PARAMETER;

        ACPI_FUNCTION_TRACE(tb_release_owner_id);

        (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);

        if (table_index < acpi_gbl_root_table_list.count) {

                acpi_ut_release_owner_id(&

                                         (acpi_gbl_root_table_list.

                                          tables[table_index].owner_id));

                status = AE_OK;

        }

        (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);

        return_ACPI_STATUS(status);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_get_owner_id

 *

 * PARAMETERS:  table_index         - Table index

 *              owner_id            - Where the table owner_id is returned

 *

 * RETURN:      Status

 *

 * DESCRIPTION: returns owner_id for the ACPI table

 *

 ******************************************************************************/

acpi_status

acpi_tb_get_owner_id(acpi_native_uint table_index, acpi_owner_id * owner_id)

{

        acpi_status status = AE_BAD_PARAMETER;

        ACPI_FUNCTION_TRACE(tb_get_owner_id);

        (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);

        if (table_index < acpi_gbl_root_table_list.count) {

                *owner_id =

                    acpi_gbl_root_table_list.tables[table_index].owner_id;

                status = AE_OK;

        }

        (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);

        return_ACPI_STATUS(status);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_is_table_loaded

 *

 * PARAMETERS:  table_index         - Table index

 *

 * RETURN:      Table Loaded Flag

 *

 ******************************************************************************/

u8 acpi_tb_is_table_loaded(acpi_native_uint table_index)

{

        u8 is_loaded = FALSE;

        (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);

        if (table_index < acpi_gbl_root_table_list.count) {

                is_loaded = (u8)

                    (acpi_gbl_root_table_list.tables[table_index].

                     flags & ACPI_TABLE_IS_LOADED);

        }

        (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);

        return (is_loaded);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_set_table_loaded_flag

 *

 * PARAMETERS:  table_index         - Table index

 *              is_loaded           - TRUE if table is loaded, FALSE otherwise

 *

 * RETURN:      None

 *

 * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE.

 *

 ******************************************************************************/

void acpi_tb_set_table_loaded_flag(acpi_native_uint table_index, u8 is_loaded)

{

        (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);

        if (table_index < acpi_gbl_root_table_list.count) {

                if (is_loaded) {

                        acpi_gbl_root_table_list.tables[table_index].flags |=

                            ACPI_TABLE_IS_LOADED;

                } else {

                        acpi_gbl_root_table_list.tables[table_index].flags &=

                            ~ACPI_TABLE_IS_LOADED;

                }

        }

        (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);

}