[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / acpi / executer / exoparg3.c


/******************************************************************************
 *
 * Module Name: exoparg3 - AML execution - opcodes with 3 arguments
 *
 *****************************************************************************/

/*
 * 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/acinterp.h>
#include <acpi/acparser.h>
#include <acpi/amlcode.h>


#define _COMPONENT          ACPI_EXECUTER
	 ACPI_MODULE_NAME    ("exoparg3")


/*!
 * Naming convention for AML interpreter execution routines.
 *
 * The routines that begin execution of AML opcodes are named with a common
 * convention based upon the number of arguments, the number of target operands,
 * and whether or not a value is returned:
 *
 *      AcpiExOpcode_xA_yT_zR
 *
 * Where:
 *
 * xA - ARGUMENTS:    The number of arguments (input operands) that are
 *                    required for this opcode type (1 through 6 args).
 * yT - TARGETS:      The number of targets (output operands) that are required
 *                    for this opcode type (0, 1, or 2 targets).
 * zR - RETURN VALUE: Indicates whether this opcode type returns a value
 *                    as the function return (0 or 1).
 *
 * The AcpiExOpcode* functions are called via the Dispatcher component with
 * fully resolved operands.
!*/


/*******************************************************************************
 *
 * FUNCTION:    acpi_ex_opcode_3A_0T_0R
 *
 * PARAMETERS:  walk_state          - Current walk state
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Execute Triadic operator (3 operands)
 *
 ******************************************************************************/

acpi_status
acpi_ex_opcode_3A_0T_0R (
	struct acpi_walk_state          *walk_state)
{
	union acpi_operand_object       **operand = &walk_state->operands[0];
	struct acpi_signal_fatal_info   *fatal;
	acpi_status                     status = AE_OK;


	ACPI_FUNCTION_TRACE_STR ("ex_opcode_3A_0T_0R",
		acpi_ps_get_opcode_name (walk_state->opcode));


	switch (walk_state->opcode) {
	case AML_FATAL_OP:          /* Fatal (fatal_type fatal_code fatal_arg) */

		ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
			"fatal_op: Type %X Code %X Arg %X <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n",
			(u32) operand[0]->integer.value,
			(u32) operand[1]->integer.value,
			(u32) operand[2]->integer.value));

		fatal = ACPI_MEM_ALLOCATE (sizeof (struct acpi_signal_fatal_info));
		if (fatal) {
			fatal->type     = (u32) operand[0]->integer.value;
			fatal->code     = (u32) operand[1]->integer.value;
			fatal->argument = (u32) operand[2]->integer.value;
		}

		/* Always signal the OS! */

		status = acpi_os_signal (ACPI_SIGNAL_FATAL, fatal);

		/* Might return while OS is shutting down, just continue */

		ACPI_MEM_FREE (fatal);
		break;


	default:

		ACPI_REPORT_ERROR (("acpi_ex_opcode_3A_0T_0R: Unknown opcode %X\n",
				walk_state->opcode));
		status = AE_AML_BAD_OPCODE;
		goto cleanup;
	}


cleanup:

	return_ACPI_STATUS (status);
}


/*******************************************************************************
 *
 * FUNCTION:    acpi_ex_opcode_3A_1T_1R
 *
 * PARAMETERS:  walk_state          - Current walk state
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Execute Triadic operator (3 operands)
 *
 ******************************************************************************/

acpi_status
acpi_ex_opcode_3A_1T_1R (
	struct acpi_walk_state          *walk_state)
{
	union acpi_operand_object       **operand = &walk_state->operands[0];
	union acpi_operand_object       *return_desc = NULL;
	char                            *buffer = NULL;
	acpi_status                     status = AE_OK;
	acpi_integer                    index;
	acpi_size                       length;


	ACPI_FUNCTION_TRACE_STR ("ex_opcode_3A_1T_1R",
		acpi_ps_get_opcode_name (walk_state->opcode));


	switch (walk_state->opcode) {
	case AML_MID_OP:    /* Mid (Source[0], Index[1], Length[2], Result[3]) */

		/*
		 * Create the return object.  The Source operand is guaranteed to be
		 * either a String or a Buffer, so just use its type.
		 */
		return_desc = acpi_ut_create_internal_object (
				  ACPI_GET_OBJECT_TYPE (operand[0]));
		if (!return_desc) {
			status = AE_NO_MEMORY;
			goto cleanup;
		}

		/* Get the Integer values from the objects */

		index = operand[1]->integer.value;
		length = (acpi_size) operand[2]->integer.value;

		/*
		 * If the index is beyond the length of the String/Buffer, or if the
		 * requested length is zero, return a zero-length String/Buffer
		 */
		if (index >= operand[0]->string.length) {
			length = 0;
		}

		/* Truncate request if larger than the actual String/Buffer */

		else if ((index + length) > operand[0]->string.length) {
			length = (acpi_size) operand[0]->string.length -
					 (acpi_size) index;
		}

		/* Strings always have a sub-pointer, not so for buffers */

		switch (ACPI_GET_OBJECT_TYPE (operand[0])) {
		case ACPI_TYPE_STRING:

			/* Always allocate a new buffer for the String */

			buffer = ACPI_MEM_CALLOCATE ((acpi_size) length + 1);
			if (!buffer) {
				status = AE_NO_MEMORY;
				goto cleanup;
			}
			break;

		case ACPI_TYPE_BUFFER:

			/* If the requested length is zero, don't allocate a buffer */

			if (length > 0) {
				/* Allocate a new buffer for the Buffer */

				buffer = ACPI_MEM_CALLOCATE (length);
				if (!buffer) {
					status = AE_NO_MEMORY;
					goto cleanup;
				}
			}
			break;

		default:                        /* Should not happen */

			status = AE_AML_OPERAND_TYPE;
			goto cleanup;
		}

		if (length > 0) {
			/* Copy the portion requested */

			ACPI_MEMCPY (buffer, operand[0]->string.pointer + index,
					  length);
		}

		/* Set the length of the new String/Buffer */

		return_desc->string.pointer = buffer;
		return_desc->string.length = (u32) length;

		/* Mark buffer initialized */

		return_desc->buffer.flags |= AOPOBJ_DATA_VALID;
		break;


	default:

		ACPI_REPORT_ERROR (("acpi_ex_opcode_3A_0T_0R: Unknown opcode %X\n",
				walk_state->opcode));
		status = AE_AML_BAD_OPCODE;
		goto cleanup;
	}

	/* Store the result in the target */

	status = acpi_ex_store (return_desc, operand[3], walk_state);

cleanup:

	/* Delete return object on error */

	if (ACPI_FAILURE (status) || walk_state->result_obj) {
		acpi_ut_remove_reference (return_desc);
	}

	/* Set the return object and exit */

	else {
		walk_state->result_obj = return_desc;
	}
	return_ACPI_STATUS (status);
}
Commit	Line	Data
1da177e4 LT	1
	2	/******************************************************************************
	3	*
	4	* Module Name: exoparg3 - AML execution - opcodes with 3 arguments
	5	*
	6	*****************************************************************************/
	7
	8	/*
	9	* Copyright (C) 2000 - 2005, R. Byron Moore
	10	* All rights reserved.
	11	*
	12	* Redistribution and use in source and binary forms, with or without
	13	* modification, are permitted provided that the following conditions
	14	* are met:
	15	* 1. Redistributions of source code must retain the above copyright
	16	* notice, this list of conditions, and the following disclaimer,
	17	* without modification.
	18	* 2. Redistributions in binary form must reproduce at minimum a disclaimer
	19	* substantially similar to the "NO WARRANTY" disclaimer below
	20	* ("Disclaimer") and any redistribution must be conditioned upon
	21	* including a substantially similar Disclaimer requirement for further
	22	* binary redistribution.
	23	* 3. Neither the names of the above-listed copyright holders nor the names
	24	* of any contributors may be used to endorse or promote products derived
	25	* from this software without specific prior written permission.
	26	*
	27	* Alternatively, this software may be distributed under the terms of the
	28	* GNU General Public License ("GPL") version 2 as published by the Free
	29	* Software Foundation.
	30	*
	31	* NO WARRANTY
	32	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	33	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	34	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
	35	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	36	* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	37	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	38	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	39	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	40	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
	41	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	42	* POSSIBILITY OF SUCH DAMAGES.
	43	*/
	44
	45
	46	#include <acpi/acpi.h>
	47	#include <acpi/acinterp.h>
	48	#include <acpi/acparser.h>
	49	#include <acpi/amlcode.h>
	50
	51
	52	#define _COMPONENT ACPI_EXECUTER
	53	ACPI_MODULE_NAME ("exoparg3")
	54
	55
	56	/*!
	57	* Naming convention for AML interpreter execution routines.
	58	*
	59	* The routines that begin execution of AML opcodes are named with a common
	60	* convention based upon the number of arguments, the number of target operands,
	61	* and whether or not a value is returned:
	62	*
	63	* AcpiExOpcode_xA_yT_zR
	64	*
65	* Where:
66	*
67	* xA - ARGUMENTS: The number of arguments (input operands) that are
68	* required for this opcode type (1 through 6 args).
69	* yT - TARGETS: The number of targets (output operands) that are required
70	* for this opcode type (0, 1, or 2 targets).
71	* zR - RETURN VALUE: Indicates whether this opcode type returns a value
72	* as the function return (0 or 1).
73	*
74	* The AcpiExOpcode* functions are called via the Dispatcher component with
75	* fully resolved operands.
76	!*/
77
78
79	/*******************************************************************************
80	*
81	* FUNCTION: acpi_ex_opcode_3A_0T_0R
82	*
83	* PARAMETERS: walk_state - Current walk state
84	*
85	* RETURN: Status
86	*
87	* DESCRIPTION: Execute Triadic operator (3 operands)
88	*
89	******************************************************************************/
90
91	acpi_status
92	acpi_ex_opcode_3A_0T_0R (
93	struct acpi_walk_state *walk_state)
94	{
95	union acpi_operand_object **operand = &walk_state->operands[0];
96	struct acpi_signal_fatal_info *fatal;
97	acpi_status status = AE_OK;
98
99
44f6c012 RM	100	ACPI_FUNCTION_TRACE_STR ("ex_opcode_3A_0T_0R",
44f6c012 RM	101	acpi_ps_get_opcode_name (walk_state->opcode));
1da177e4 LT	102
	103
	104	switch (walk_state->opcode) {
44f6c012	105	case AML_FATAL_OP: /* Fatal (fatal_type fatal_code fatal_arg) */
1da177e4 LT	106
	107	ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
	108	"fatal_op: Type %X Code %X Arg %X <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n",
	109	(u32) operand[0]->integer.value,
	110	(u32) operand[1]->integer.value,
	111	(u32) operand[2]->integer.value));
	112
	113	fatal = ACPI_MEM_ALLOCATE (sizeof (struct acpi_signal_fatal_info));
	114	if (fatal) {
	115	fatal->type = (u32) operand[0]->integer.value;
	116	fatal->code = (u32) operand[1]->integer.value;
	117	fatal->argument = (u32) operand[2]->integer.value;
	118	}
	119
44f6c012 RM	120	/* Always signal the OS! */
44f6c012 RM	121
1da177e4 LT	122	status = acpi_os_signal (ACPI_SIGNAL_FATAL, fatal);
	123
	124	/* Might return while OS is shutting down, just continue */
	125
	126	ACPI_MEM_FREE (fatal);
	127	break;
	128
	129
	130	default:
	131
	132	ACPI_REPORT_ERROR (("acpi_ex_opcode_3A_0T_0R: Unknown opcode %X\n",
	133	walk_state->opcode));
	134	status = AE_AML_BAD_OPCODE;
	135	goto cleanup;
	136	}
	137
	138
	139	cleanup:
	140
	141	return_ACPI_STATUS (status);
	142	}
	143
	144
	145	/*******************************************************************************
	146	*
	147	* FUNCTION: acpi_ex_opcode_3A_1T_1R
	148	*
	149	* PARAMETERS: walk_state - Current walk state
	150	*
	151	* RETURN: Status
	152	*
	153	* DESCRIPTION: Execute Triadic operator (3 operands)
	154	*
	155	******************************************************************************/
	156
	157	acpi_status
	158	acpi_ex_opcode_3A_1T_1R (
	159	struct acpi_walk_state *walk_state)
	160	{
	161	union acpi_operand_object **operand = &walk_state->operands[0];
	162	union acpi_operand_object *return_desc = NULL;
73459f73	163	char *buffer = NULL;
1da177e4	164	acpi_status status = AE_OK;
44f6c012	165	acpi_integer index;
1da177e4 LT	166	acpi_size length;
	167
	168
44f6c012 RM	169	ACPI_FUNCTION_TRACE_STR ("ex_opcode_3A_1T_1R",
44f6c012 RM	170	acpi_ps_get_opcode_name (walk_state->opcode));
1da177e4 LT	171
	172
	173	switch (walk_state->opcode) {
44f6c012	174	case AML_MID_OP: /* Mid (Source[0], Index[1], Length[2], Result[3]) */
1da177e4 LT	175
	176	/*
	177	* Create the return object. The Source operand is guaranteed to be
	178	* either a String or a Buffer, so just use its type.
	179	*/
44f6c012 RM	180	return_desc = acpi_ut_create_internal_object (
44f6c012 RM	181	ACPI_GET_OBJECT_TYPE (operand[0]));
1da177e4 LT	182	if (!return_desc) {
	183	status = AE_NO_MEMORY;
	184	goto cleanup;
	185	}
	186
	187	/* Get the Integer values from the objects */
	188
44f6c012	189	index = operand[1]->integer.value;
1da177e4 LT	190	length = (acpi_size) operand[2]->integer.value;
	191
	192	/*
	193	* If the index is beyond the length of the String/Buffer, or if the
	194	* requested length is zero, return a zero-length String/Buffer
	195	*/
73459f73 RM	196	if (index >= operand[0]->string.length) {
	197	length = 0;
	198	}
	199
	200	/* Truncate request if larger than the actual String/Buffer */
	201
	202	else if ((index + length) > operand[0]->string.length) {
	203	length = (acpi_size) operand[0]->string.length -
	204	(acpi_size) index;
	205	}
1da177e4	206
73459f73 RM	207	/* Strings always have a sub-pointer, not so for buffers */
	208
	209	switch (ACPI_GET_OBJECT_TYPE (operand[0])) {
	210	case ACPI_TYPE_STRING:
	211
	212	/* Always allocate a new buffer for the String */
1da177e4 LT	213
	214	buffer = ACPI_MEM_CALLOCATE ((acpi_size) length + 1);
	215	if (!buffer) {
	216	status = AE_NO_MEMORY;
	217	goto cleanup;
	218	}
73459f73 RM	219	break;
	220
	221	case ACPI_TYPE_BUFFER:
	222
	223	/* If the requested length is zero, don't allocate a buffer */
	224
	225	if (length > 0) {
	226	/* Allocate a new buffer for the Buffer */
	227
	228	buffer = ACPI_MEM_CALLOCATE (length);
	229	if (!buffer) {
	230	status = AE_NO_MEMORY;
	231	goto cleanup;
	232	}
	233	}
	234	break;
1da177e4	235
73459f73 RM	236	default: /* Should not happen */
	237
	238	status = AE_AML_OPERAND_TYPE;
	239	goto cleanup;
	240	}
	241
	242	if (length > 0) {
1da177e4 LT	243	/* Copy the portion requested */
	244
	245	ACPI_MEMCPY (buffer, operand[0]->string.pointer + index,
	246	length);
73459f73	247	}
1da177e4	248
73459f73	249	/* Set the length of the new String/Buffer */
1da177e4	250
73459f73 RM	251	return_desc->string.pointer = buffer;
73459f73 RM	252	return_desc->string.length = (u32) length;
1da177e4 LT	253
	254	/* Mark buffer initialized */
	255
	256	return_desc->buffer.flags \|= AOPOBJ_DATA_VALID;
	257	break;
	258
	259
	260	default:
	261
	262	ACPI_REPORT_ERROR (("acpi_ex_opcode_3A_0T_0R: Unknown opcode %X\n",
	263	walk_state->opcode));
	264	status = AE_AML_BAD_OPCODE;
	265	goto cleanup;
	266	}
	267
	268	/* Store the result in the target */
	269
	270	status = acpi_ex_store (return_desc, operand[3], walk_state);
	271
	272	cleanup:
	273
	274	/* Delete return object on error */
	275
73459f73	276	if (ACPI_FAILURE (status) \|\| walk_state->result_obj) {
1da177e4 LT	277	acpi_ut_remove_reference (return_desc);
	278	}
	279
	280	/* Set the return object and exit */
	281
73459f73	282	else {
1da177e4 LT	283	walk_state->result_obj = return_desc;
	284	}
	285	return_ACPI_STATUS (status);
	286	}
	287
	288