[deliverable/linux.git] / drivers / acpi / acpica / tbxfload.c

/******************************************************************************
 *
 * Module Name: tbxfload - Table load/unload external interfaces
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2016, Intel Corp.
 * 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.
 */

#define EXPORT_ACPI_INTERFACES

#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "actables.h"

#define _COMPONENT          ACPI_TABLES
ACPI_MODULE_NAME("tbxfload")

/*******************************************************************************
 *
 * FUNCTION:    acpi_load_tables
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Load the ACPI tables from the RSDT/XSDT
 *
 ******************************************************************************/
acpi_status __init acpi_load_tables(void)
{
	acpi_status status;

	ACPI_FUNCTION_TRACE(acpi_load_tables);

	/* Load the namespace from the tables */

	status = acpi_tb_load_namespace();

	/* Don't let single failures abort the load */

	if (status == AE_CTRL_TERMINATE) {
		status = AE_OK;
	}

	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status,
				"While loading namespace from ACPI tables"));
	}

	return_ACPI_STATUS(status);
}

ACPI_EXPORT_SYMBOL_INIT(acpi_load_tables)

/*******************************************************************************
 *
 * FUNCTION:    acpi_tb_load_namespace
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Load the namespace from the DSDT and all SSDTs/PSDTs found in
 *              the RSDT/XSDT.
 *
 ******************************************************************************/
acpi_status acpi_tb_load_namespace(void)
{
	acpi_status status;
	u32 i;
	struct acpi_table_header *new_dsdt;
	struct acpi_table_desc *table;
	u32 tables_loaded = 0;
	u32 tables_failed = 0;

	ACPI_FUNCTION_TRACE(tb_load_namespace);

	(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);

	/*
	 * Load the namespace. The DSDT is required, but any SSDT and
	 * PSDT tables are optional. Verify the DSDT.
	 */
	table = &acpi_gbl_root_table_list.tables[acpi_gbl_dsdt_index];

	if (!acpi_gbl_root_table_list.current_table_count ||
	    !ACPI_COMPARE_NAME(table->signature.ascii, ACPI_SIG_DSDT) ||
	    ACPI_FAILURE(acpi_tb_validate_table(table))) {
		status = AE_NO_ACPI_TABLES;
		goto unlock_and_exit;
	}

	/*
	 * Save the DSDT pointer for simple access. This is the mapped memory
	 * address. We must take care here because the address of the .Tables
	 * array can change dynamically as tables are loaded at run-time. Note:
	 * .Pointer field is not validated until after call to acpi_tb_validate_table.
	 */
	acpi_gbl_DSDT = table->pointer;

	/*
	 * Optionally copy the entire DSDT to local memory (instead of simply
	 * mapping it.) There are some BIOSs that corrupt or replace the original
	 * DSDT, creating the need for this option. Default is FALSE, do not copy
	 * the DSDT.
	 */
	if (acpi_gbl_copy_dsdt_locally) {
		new_dsdt = acpi_tb_copy_dsdt(acpi_gbl_dsdt_index);
		if (new_dsdt) {
			acpi_gbl_DSDT = new_dsdt;
		}
	}

	/*
	 * Save the original DSDT header for detection of table corruption
	 * and/or replacement of the DSDT from outside the OS.
	 */
	memcpy(&acpi_gbl_original_dsdt_header, acpi_gbl_DSDT,
	       sizeof(struct acpi_table_header));

	(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);

	/* Load and parse tables */

	status = acpi_ns_load_table(acpi_gbl_dsdt_index, acpi_gbl_root_node);
	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status, "[DSDT] table load failed"));
		tables_failed++;
	} else {
		tables_loaded++;
	}

	/* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */

	(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
	for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
		table = &acpi_gbl_root_table_list.tables[i];

		if (!acpi_gbl_root_table_list.tables[i].address ||
		    (!ACPI_COMPARE_NAME(table->signature.ascii, ACPI_SIG_SSDT)
		     && !ACPI_COMPARE_NAME(table->signature.ascii,
					   ACPI_SIG_PSDT)
		     && !ACPI_COMPARE_NAME(table->signature.ascii,
					   ACPI_SIG_OSDT))
		    || ACPI_FAILURE(acpi_tb_validate_table(table))) {
			continue;
		}

		/* Ignore errors while loading tables, get as many as possible */

		(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
		status = acpi_ns_load_table(i, acpi_gbl_root_node);
		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status,
					"(%4.4s:%8.8s) while loading table",
					table->signature.ascii,
					table->pointer->oem_table_id));

			tables_failed++;

			ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
					      "Table [%4.4s:%8.8s] (id FF) - Table namespace load failed\n\n",
					      table->signature.ascii,
					      table->pointer->oem_table_id));
		} else {
			tables_loaded++;
		}

		(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
	}

	if (!tables_failed) {
		ACPI_INFO((AE_INFO,
			   "%u ACPI AML tables successfully acquired and loaded\n",
			   tables_loaded));
	} else {
		ACPI_ERROR((AE_INFO,
			    "%u table load failures, %u successful",
			    tables_failed, tables_loaded));

		/* Indicate at least one failure */

		status = AE_CTRL_TERMINATE;
	}

unlock_and_exit:
	(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
	return_ACPI_STATUS(status);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_install_table
 *
 * PARAMETERS:  address             - Address of the ACPI table to be installed.
 *              physical            - Whether the address is a physical table
 *                                    address or not
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Dynamically install an ACPI table.
 *              Note: This function should only be invoked after
 *                    acpi_initialize_tables() and before acpi_load_tables().
 *
 ******************************************************************************/

acpi_status __init
acpi_install_table(acpi_physical_address address, u8 physical)
{
	acpi_status status;
	u8 flags;
	u32 table_index;

	ACPI_FUNCTION_TRACE(acpi_install_table);

	if (physical) {
		flags = ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL;
	} else {
		flags = ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL;
	}

	status = acpi_tb_install_standard_table(address, flags,
						FALSE, FALSE, &table_index);

	return_ACPI_STATUS(status);
}

ACPI_EXPORT_SYMBOL_INIT(acpi_install_table)

/*******************************************************************************
 *
 * FUNCTION:    acpi_load_table
 *
 * PARAMETERS:  table               - Pointer to a buffer containing the ACPI
 *                                    table to be loaded.
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Dynamically load an ACPI table from the caller's buffer. Must
 *              be a valid ACPI table with a valid ACPI table header.
 *              Note1: Mainly intended to support hotplug addition of SSDTs.
 *              Note2: Does not copy the incoming table. User is responsible
 *              to ensure that the table is not deleted or unmapped.
 *
 ******************************************************************************/
acpi_status acpi_load_table(struct acpi_table_header *table)
{
	acpi_status status;
	u32 table_index;

	ACPI_FUNCTION_TRACE(acpi_load_table);

	/* Parameter validation */

	if (!table) {
		return_ACPI_STATUS(AE_BAD_PARAMETER);
	}

	/* Must acquire the interpreter lock during this operation */

	status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Install the table and load it into the namespace */

	ACPI_INFO((AE_INFO, "Host-directed Dynamic ACPI Table Load:"));
	(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);

	status = acpi_tb_install_standard_table(ACPI_PTR_TO_PHYSADDR(table),
						ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL,
						TRUE, FALSE, &table_index);

	(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
	if (ACPI_FAILURE(status)) {
		goto unlock_and_exit;
	}

	/*
	 * Note: Now table is "INSTALLED", it must be validated before
	 * using.
	 */
	status =
	    acpi_tb_validate_table(&acpi_gbl_root_table_list.
				   tables[table_index]);
	if (ACPI_FAILURE(status)) {
		goto unlock_and_exit;
	}

	status = acpi_ns_load_table(table_index, acpi_gbl_root_node);

	/* Invoke table handler if present */

	if (acpi_gbl_table_handler) {
		(void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_LOAD, table,
					     acpi_gbl_table_handler_context);
	}

unlock_and_exit:
	(void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
	return_ACPI_STATUS(status);
}

ACPI_EXPORT_SYMBOL(acpi_load_table)

/*******************************************************************************
 *
 * FUNCTION:    acpi_unload_parent_table
 *
 * PARAMETERS:  object              - Handle to any namespace object owned by
 *                                    the table to be unloaded
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Via any namespace object within an SSDT or OEMx table, unloads
 *              the table and deletes all namespace objects associated with
 *              that table. Unloading of the DSDT is not allowed.
 *              Note: Mainly intended to support hotplug removal of SSDTs.
 *
 ******************************************************************************/
acpi_status acpi_unload_parent_table(acpi_handle object)
{
	struct acpi_namespace_node *node =
	    ACPI_CAST_PTR(struct acpi_namespace_node, object);
	acpi_status status = AE_NOT_EXIST;
	acpi_owner_id owner_id;
	u32 i;

	ACPI_FUNCTION_TRACE(acpi_unload_parent_table);

	/* Parameter validation */

	if (!object) {
		return_ACPI_STATUS(AE_BAD_PARAMETER);
	}

	/*
	 * The node owner_id is currently the same as the parent table ID.
	 * However, this could change in the future.
	 */
	owner_id = node->owner_id;
	if (!owner_id) {

		/* owner_id==0 means DSDT is the owner. DSDT cannot be unloaded */

		return_ACPI_STATUS(AE_TYPE);
	}

	/* Must acquire the interpreter lock during this operation */

	status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Find the table in the global table list */

	for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) {
		if (owner_id != acpi_gbl_root_table_list.tables[i].owner_id) {
			continue;
		}

		/*
		 * Allow unload of SSDT and OEMx tables only. Do not allow unload
		 * of the DSDT. No other types of tables should get here, since
		 * only these types can contain AML and thus are the only types
		 * that can create namespace objects.
		 */
		if (ACPI_COMPARE_NAME
		    (acpi_gbl_root_table_list.tables[i].signature.ascii,
		     ACPI_SIG_DSDT)) {
			status = AE_TYPE;
			break;
		}

		/* Ensure the table is actually loaded */

		if (!acpi_tb_is_table_loaded(i)) {
			status = AE_NOT_EXIST;
			break;
		}

		/* Invoke table handler if present */

		if (acpi_gbl_table_handler) {
			(void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_UNLOAD,
						     acpi_gbl_root_table_list.
						     tables[i].pointer,
						     acpi_gbl_table_handler_context);
		}

		/*
		 * Delete all namespace objects owned by this table. Note that
		 * these objects can appear anywhere in the namespace by virtue
		 * of the AML "Scope" operator. Thus, we need to track ownership
		 * by an ID, not simply a position within the hierarchy.
		 */
		status = acpi_tb_delete_namespace_by_owner(i);
		if (ACPI_FAILURE(status)) {
			break;
		}

		status = acpi_tb_release_owner_id(i);
		acpi_tb_set_table_loaded_flag(i, FALSE);
		break;
	}

	(void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
	return_ACPI_STATUS(status);
}

ACPI_EXPORT_SYMBOL(acpi_unload_parent_table)
Commit	Line	Data
d59b8ecd BM	1	/******************************************************************************
	2	*
	3	* Module Name: tbxfload - Table load/unload external interfaces
	4	*
	5	*****************************************************************************/
	6
	7	/*
c8100dc4	8	* Copyright (C) 2000 - 2016, Intel Corp.
d59b8ecd BM	9	* All rights reserved.
	10	*
	11	* Redistribution and use in source and binary forms, with or without
	12	* modification, are permitted provided that the following conditions
	13	* are met:
	14	* 1. Redistributions of source code must retain the above copyright
	15	* notice, this list of conditions, and the following disclaimer,
	16	* without modification.
	17	* 2. Redistributions in binary form must reproduce at minimum a disclaimer
	18	* substantially similar to the "NO WARRANTY" disclaimer below
	19	* ("Disclaimer") and any redistribution must be conditioned upon
	20	* including a substantially similar Disclaimer requirement for further
	21	* binary redistribution.
	22	* 3. Neither the names of the above-listed copyright holders nor the names
	23	* of any contributors may be used to endorse or promote products derived
	24	* from this software without specific prior written permission.
	25	*
	26	* Alternatively, this software may be distributed under the terms of the
	27	* GNU General Public License ("GPL") version 2 as published by the Free
	28	* Software Foundation.
	29	*
	30	* NO WARRANTY
	31	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	32	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	33	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
	34	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	35	* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	36	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	37	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	38	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	39	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
	40	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	41	* POSSIBILITY OF SUCH DAMAGES.
	42	*/
	43
839e928f LZ	44	#define EXPORT_ACPI_INTERFACES
839e928f LZ	45
d59b8ecd BM	46	#include <acpi/acpi.h>
	47	#include "accommon.h"
	48	#include "acnamesp.h"
	49	#include "actables.h"
	50
	51	#define _COMPONENT ACPI_TABLES
	52	ACPI_MODULE_NAME("tbxfload")
	53
d59b8ecd BM	54	/*******************************************************************************
	55	*
	56	* FUNCTION: acpi_load_tables
	57	*
	58	* PARAMETERS: None
	59	*
	60	* RETURN: Status
	61	*
	62	* DESCRIPTION: Load the ACPI tables from the RSDT/XSDT
	63	*
	64	******************************************************************************/
45c9f78b	65	acpi_status __init acpi_load_tables(void)
d59b8ecd BM	66	{
	67	acpi_status status;
	68
	69	ACPI_FUNCTION_TRACE(acpi_load_tables);
	70
	71	/* Load the namespace from the tables */
	72
	73	status = acpi_tb_load_namespace();
93cdafa0 BM	74
	75	/* Don't let single failures abort the load */
	76
	77	if (status == AE_CTRL_TERMINATE) {
	78	status = AE_OK;
	79	}
	80
d59b8ecd BM	81	if (ACPI_FAILURE(status)) {
	82	ACPI_EXCEPTION((AE_INFO, status,
	83	"While loading namespace from ACPI tables"));
	84	}
	85
	86	return_ACPI_STATUS(status);
	87	}
	88
d21f600b	89	ACPI_EXPORT_SYMBOL_INIT(acpi_load_tables)
d59b8ecd BM	90
	91	/*******************************************************************************
	92	*
	93	* FUNCTION: acpi_tb_load_namespace
	94	*
	95	* PARAMETERS: None
	96	*
	97	* RETURN: Status
	98	*
	99	* DESCRIPTION: Load the namespace from the DSDT and all SSDTs/PSDTs found in
	100	* the RSDT/XSDT.
	101	*
	102	******************************************************************************/
93cdafa0	103	acpi_status acpi_tb_load_namespace(void)
d59b8ecd BM	104	{
	105	acpi_status status;
	106	u32 i;
	107	struct acpi_table_header *new_dsdt;
3c0503dd	108	struct acpi_table_desc *table;
4712f71b BM	109	u32 tables_loaded = 0;
4712f71b BM	110	u32 tables_failed = 0;
d59b8ecd BM	111
	112	ACPI_FUNCTION_TRACE(tb_load_namespace);
	113
	114	(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
	115
	116	/*
	117	* Load the namespace. The DSDT is required, but any SSDT and
	118	* PSDT tables are optional. Verify the DSDT.
	119	*/
3c0503dd BM	120	table = &acpi_gbl_root_table_list.tables[acpi_gbl_dsdt_index];
3c0503dd BM	121
d59b8ecd	122	if (!acpi_gbl_root_table_list.current_table_count \|\|
3c0503dd BM	123	!ACPI_COMPARE_NAME(table->signature.ascii, ACPI_SIG_DSDT) \|\|
3c0503dd BM	124	ACPI_FAILURE(acpi_tb_validate_table(table))) {
d59b8ecd BM	125	status = AE_NO_ACPI_TABLES;
	126	goto unlock_and_exit;
	127	}
	128
	129	/*
	130	* Save the DSDT pointer for simple access. This is the mapped memory
	131	* address. We must take care here because the address of the .Tables
	132	* array can change dynamically as tables are loaded at run-time. Note:
7f9fc99c	133	* .Pointer field is not validated until after call to acpi_tb_validate_table.
d59b8ecd	134	*/
3c0503dd	135	acpi_gbl_DSDT = table->pointer;
d59b8ecd BM	136
	137	/*
	138	* Optionally copy the entire DSDT to local memory (instead of simply
	139	* mapping it.) There are some BIOSs that corrupt or replace the original
	140	* DSDT, creating the need for this option. Default is FALSE, do not copy
	141	* the DSDT.
	142	*/
	143	if (acpi_gbl_copy_dsdt_locally) {
8ec3f459	144	new_dsdt = acpi_tb_copy_dsdt(acpi_gbl_dsdt_index);
d59b8ecd BM	145	if (new_dsdt) {
	146	acpi_gbl_DSDT = new_dsdt;
	147	}
	148	}
	149
	150	/*
	151	* Save the original DSDT header for detection of table corruption
	152	* and/or replacement of the DSDT from outside the OS.
	153	*/
4fa4616e BM	154	memcpy(&acpi_gbl_original_dsdt_header, acpi_gbl_DSDT,
4fa4616e BM	155	sizeof(struct acpi_table_header));
d59b8ecd BM	156
	157	(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
	158
	159	/* Load and parse tables */
	160
8ec3f459	161	status = acpi_ns_load_table(acpi_gbl_dsdt_index, acpi_gbl_root_node);
d59b8ecd	162	if (ACPI_FAILURE(status)) {
4712f71b BM	163	ACPI_EXCEPTION((AE_INFO, status, "[DSDT] table load failed"));
	164	tables_failed++;
	165	} else {
	166	tables_loaded++;
d59b8ecd BM	167	}
	168
	169	/* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */
	170
	171	(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
	172	for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
3c0503dd BM	173	table = &acpi_gbl_root_table_list.tables[i];
3c0503dd BM	174
c04e1fb4	175	if (!acpi_gbl_root_table_list.tables[i].address \|\|
3c0503dd BM	176	(!ACPI_COMPARE_NAME(table->signature.ascii, ACPI_SIG_SSDT)
	177	&& !ACPI_COMPARE_NAME(table->signature.ascii,
	178	ACPI_SIG_PSDT)
	179	&& !ACPI_COMPARE_NAME(table->signature.ascii,
	180	ACPI_SIG_OSDT))
	181	\|\| ACPI_FAILURE(acpi_tb_validate_table(table))) {
d59b8ecd BM	182	continue;
	183	}
	184
d59b8ecd BM	185	/* Ignore errors while loading tables, get as many as possible */
	186
	187	(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
4712f71b BM	188	status = acpi_ns_load_table(i, acpi_gbl_root_node);
	189	if (ACPI_FAILURE(status)) {
	190	ACPI_EXCEPTION((AE_INFO, status,
3c0503dd BM	191	"(%4.4s:%8.8s) while loading table",
	192	table->signature.ascii,
	193	table->pointer->oem_table_id));
1fad8738	194
4712f71b	195	tables_failed++;
3c0503dd BM	196
	197	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
	198	"Table [%4.4s:%8.8s] (id FF) - Table namespace load failed\n\n",
	199	table->signature.ascii,
	200	table->pointer->oem_table_id));
4712f71b BM	201	} else {
	202	tables_loaded++;
	203	}
	204
d59b8ecd BM	205	(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
	206	}
	207
4712f71b BM	208	if (!tables_failed) {
4712f71b BM	209	ACPI_INFO((AE_INFO,
2ba7379b	210	"%u ACPI AML tables successfully acquired and loaded\n",
4712f71b BM	211	tables_loaded));
	212	} else {
	213	ACPI_ERROR((AE_INFO,
3c0503dd BM	214	"%u table load failures, %u successful",
3c0503dd BM	215	tables_failed, tables_loaded));
93cdafa0 BM	216
	217	/* Indicate at least one failure */
	218
	219	status = AE_CTRL_TERMINATE;
4712f71b	220	}
d59b8ecd	221
10622bf8	222	unlock_and_exit:
d59b8ecd BM	223	(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
	224	return_ACPI_STATUS(status);
	225	}
	226
caf4a15c LZ	227	/*******************************************************************************
	228	*
	229	* FUNCTION: acpi_install_table
	230	*
	231	* PARAMETERS: address - Address of the ACPI table to be installed.
	232	* physical - Whether the address is a physical table
	233	* address or not
	234	*
	235	* RETURN: Status
	236	*
	237	* DESCRIPTION: Dynamically install an ACPI table.
	238	* Note: This function should only be invoked after
	239	* acpi_initialize_tables() and before acpi_load_tables().
	240	*
	241	******************************************************************************/
	242
	243	acpi_status __init
	244	acpi_install_table(acpi_physical_address address, u8 physical)
	245	{
	246	acpi_status status;
	247	u8 flags;
	248	u32 table_index;
	249
	250	ACPI_FUNCTION_TRACE(acpi_install_table);
	251
	252	if (physical) {
ed6f1d44	253	flags = ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL;
dc00203b ZR	254	} else {
dc00203b ZR	255	flags = ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL;
caf4a15c LZ	256	}
caf4a15c LZ	257
ed6f1d44 BM	258	status = acpi_tb_install_standard_table(address, flags,
ed6f1d44 BM	259	FALSE, FALSE, &table_index);
caf4a15c LZ	260
	261	return_ACPI_STATUS(status);
	262	}
	263
	264	ACPI_EXPORT_SYMBOL_INIT(acpi_install_table)
	265
f60d8181 BM	266	/*******************************************************************************
	267	*
	268	* FUNCTION: acpi_load_table
	269	*
	270	* PARAMETERS: table - Pointer to a buffer containing the ACPI
	271	* table to be loaded.
	272	*
	273	* RETURN: Status
	274	*
	275	* DESCRIPTION: Dynamically load an ACPI table from the caller's buffer. Must
	276	* be a valid ACPI table with a valid ACPI table header.
	277	* Note1: Mainly intended to support hotplug addition of SSDTs.
691fda50	278	* Note2: Does not copy the incoming table. User is responsible
f60d8181 BM	279	* to ensure that the table is not deleted or unmapped.
	280	*
	281	******************************************************************************/
f60d8181 BM	282	acpi_status acpi_load_table(struct acpi_table_header *table)
	283	{
	284	acpi_status status;
f60d8181 BM	285	u32 table_index;
	286
	287	ACPI_FUNCTION_TRACE(acpi_load_table);
	288
	289	/* Parameter validation */
	290
	291	if (!table) {
	292	return_ACPI_STATUS(AE_BAD_PARAMETER);
	293	}
	294
f60d8181 BM	295	/* Must acquire the interpreter lock during this operation */
	296
	297	status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
	298	if (ACPI_FAILURE(status)) {
	299	return_ACPI_STATUS(status);
	300	}
	301
	302	/* Install the table and load it into the namespace */
	303
	304	ACPI_INFO((AE_INFO, "Host-directed Dynamic ACPI Table Load:"));
86dfc6f3	305	(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
ed6f1d44 BM	306
	307	status = acpi_tb_install_standard_table(ACPI_PTR_TO_PHYSADDR(table),
	308	ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL,
	309	TRUE, FALSE, &table_index);
	310
86dfc6f3 LZ	311	(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
	312	if (ACPI_FAILURE(status)) {
	313	goto unlock_and_exit;
	314	}
	315
	316	/*
	317	* Note: Now table is "INSTALLED", it must be validated before
	318	* using.
	319	*/
	320	status =
	321	acpi_tb_validate_table(&acpi_gbl_root_table_list.
	322	tables[table_index]);
f60d8181 BM	323	if (ACPI_FAILURE(status)) {
	324	goto unlock_and_exit;
	325	}
	326
	327	status = acpi_ns_load_table(table_index, acpi_gbl_root_node);
	328
	329	/* Invoke table handler if present */
	330
	331	if (acpi_gbl_table_handler) {
	332	(void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_LOAD, table,
	333	acpi_gbl_table_handler_context);
	334	}
	335
10622bf8	336	unlock_and_exit:
f60d8181 BM	337	(void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
	338	return_ACPI_STATUS(status);
	339	}
	340
	341	ACPI_EXPORT_SYMBOL(acpi_load_table)
	342
	343	/*******************************************************************************
	344	*
	345	* FUNCTION: acpi_unload_parent_table
	346	*
	347	* PARAMETERS: object - Handle to any namespace object owned by
	348	* the table to be unloaded
	349	*
	350	* RETURN: Status
	351	*
	352	* DESCRIPTION: Via any namespace object within an SSDT or OEMx table, unloads
	353	* the table and deletes all namespace objects associated with
	354	* that table. Unloading of the DSDT is not allowed.
	355	* Note: Mainly intended to support hotplug removal of SSDTs.
	356	*
	357	******************************************************************************/
	358	acpi_status acpi_unload_parent_table(acpi_handle object)
	359	{
	360	struct acpi_namespace_node *node =
	361	ACPI_CAST_PTR(struct acpi_namespace_node, object);
	362	acpi_status status = AE_NOT_EXIST;
	363	acpi_owner_id owner_id;
	364	u32 i;
	365
	366	ACPI_FUNCTION_TRACE(acpi_unload_parent_table);
	367
	368	/* Parameter validation */
	369
	370	if (!object) {
	371	return_ACPI_STATUS(AE_BAD_PARAMETER);
	372	}
	373
	374	/*
	375	* The node owner_id is currently the same as the parent table ID.
	376	* However, this could change in the future.
	377	*/
	378	owner_id = node->owner_id;
	379	if (!owner_id) {
	380
	381	/* owner_id==0 means DSDT is the owner. DSDT cannot be unloaded */
	382
	383	return_ACPI_STATUS(AE_TYPE);
	384	}
	385
	386	/* Must acquire the interpreter lock during this operation */
	387
	388	status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
	389	if (ACPI_FAILURE(status)) {
	390	return_ACPI_STATUS(status);
	391	}
	392
	393	/* Find the table in the global table list */
	394
	395	for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) {
	396	if (owner_id != acpi_gbl_root_table_list.tables[i].owner_id) {
	397	continue;
	398	}
	399
	400	/*
401	* Allow unload of SSDT and OEMx tables only. Do not allow unload
402	* of the DSDT. No other types of tables should get here, since
403	* only these types can contain AML and thus are the only types
404	* that can create namespace objects.
405	*/
406	if (ACPI_COMPARE_NAME
407	(acpi_gbl_root_table_list.tables[i].signature.ascii,
408	ACPI_SIG_DSDT)) {
409	status = AE_TYPE;
410	break;
411	}
412
413	/* Ensure the table is actually loaded */
414
415	if (!acpi_tb_is_table_loaded(i)) {
416	status = AE_NOT_EXIST;
417	break;
418	}
419
420	/* Invoke table handler if present */
421
422	if (acpi_gbl_table_handler) {
423	(void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_UNLOAD,
424	acpi_gbl_root_table_list.
425	tables[i].pointer,
426	acpi_gbl_table_handler_context);
427	}
428
429	/*
430	* Delete all namespace objects owned by this table. Note that
431	* these objects can appear anywhere in the namespace by virtue
432	* of the AML "Scope" operator. Thus, we need to track ownership
433	* by an ID, not simply a position within the hierarchy.
434	*/
435	status = acpi_tb_delete_namespace_by_owner(i);
436	if (ACPI_FAILURE(status)) {
437	break;
438	}
439
440	status = acpi_tb_release_owner_id(i);
441	acpi_tb_set_table_loaded_flag(i, FALSE);
442	break;
443	}
444
445	(void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
446	return_ACPI_STATUS(status);
447	}
448
449	ACPI_EXPORT_SYMBOL(acpi_unload_parent_table)