[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / acpi / acpica / utexcep.c

/*******************************************************************************
 *
 * Module Name: utexcep - Exception code support
 *
 ******************************************************************************/

/*
 * Copyright (C) 2000 - 2013, 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 ACPI_DEFINE_EXCEPTION_TABLE
#include <linux/export.h>
#include <acpi/acpi.h>
#include "accommon.h"

#define _COMPONENT          ACPI_UTILITIES
ACPI_MODULE_NAME("utexcep")

/*******************************************************************************
 *
 * FUNCTION:    acpi_format_exception
 *
 * PARAMETERS:  status              - The acpi_status code to be formatted
 *
 * RETURN:      A string containing the exception text. A valid pointer is
 *              always returned.
 *
 * DESCRIPTION: This function translates an ACPI exception into an ASCII
 *              string. Returns "unknown status" string for invalid codes.
 *
 ******************************************************************************/
const char *acpi_format_exception(acpi_status status)
{
	const struct acpi_exception_info *exception;

	ACPI_FUNCTION_ENTRY();

	exception = acpi_ut_validate_exception(status);
	if (!exception) {

		/* Exception code was not recognized */

		ACPI_ERROR((AE_INFO,
			    "Unknown exception code: 0x%8.8X", status));

		return ("UNKNOWN_STATUS_CODE");
	}

	return (exception->name);
}

ACPI_EXPORT_SYMBOL(acpi_format_exception)

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_validate_exception
 *
 * PARAMETERS:  status              - The acpi_status code to be formatted
 *
 * RETURN:      A string containing the exception text. NULL if exception is
 *              not valid.
 *
 * DESCRIPTION: This function validates and translates an ACPI exception into
 *              an ASCII string.
 *
 ******************************************************************************/
const struct acpi_exception_info *acpi_ut_validate_exception(acpi_status status)
{
	u32 sub_status;
	const struct acpi_exception_info *exception = NULL;

	ACPI_FUNCTION_ENTRY();

	/*
	 * Status is composed of two parts, a "type" and an actual code
	 */
	sub_status = (status & ~AE_CODE_MASK);

	switch (status & AE_CODE_MASK) {
	case AE_CODE_ENVIRONMENTAL:

		if (sub_status <= AE_CODE_ENV_MAX) {
			exception = &acpi_gbl_exception_names_env[sub_status];
		}
		break;

	case AE_CODE_PROGRAMMER:

		if (sub_status <= AE_CODE_PGM_MAX) {
			exception = &acpi_gbl_exception_names_pgm[sub_status];
		}
		break;

	case AE_CODE_ACPI_TABLES:

		if (sub_status <= AE_CODE_TBL_MAX) {
			exception = &acpi_gbl_exception_names_tbl[sub_status];
		}
		break;

	case AE_CODE_AML:

		if (sub_status <= AE_CODE_AML_MAX) {
			exception = &acpi_gbl_exception_names_aml[sub_status];
		}
		break;

	case AE_CODE_CONTROL:

		if (sub_status <= AE_CODE_CTRL_MAX) {
			exception = &acpi_gbl_exception_names_ctrl[sub_status];
		}
		break;

	default:
		break;
	}

	if (!exception || !exception->name) {
		return (NULL);
	}

	return (exception);
}
Commit	Line	Data
bc7db145 BM	1	/*******************************************************************************
	2	*
	3	* Module Name: utexcep - Exception code support
	4	*
	5	******************************************************************************/
	6
	7	/*
25f044e6	8	* Copyright (C) 2000 - 2013, Intel Corp.
bc7db145 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
	44	#define ACPI_DEFINE_EXCEPTION_TABLE
	45	#include <linux/export.h>
	46	#include <acpi/acpi.h>
	47	#include "accommon.h"
	48
	49	#define _COMPONENT ACPI_UTILITIES
	50	ACPI_MODULE_NAME("utexcep")
	51
	52	/*******************************************************************************
	53	*
	54	* FUNCTION: acpi_format_exception
	55	*
	56	* PARAMETERS: status - The acpi_status code to be formatted
	57	*
	58	* RETURN: A string containing the exception text. A valid pointer is
	59	* always returned.
	60	*
	61	* DESCRIPTION: This function translates an ACPI exception into an ASCII
	62	* string. Returns "unknown status" string for invalid codes.
	63	*
	64	******************************************************************************/
	65	const char *acpi_format_exception(acpi_status status)
	66	{
ae1b4769	67	const struct acpi_exception_info *exception;
bc7db145 BM	68
	69	ACPI_FUNCTION_ENTRY();
	70
	71	exception = acpi_ut_validate_exception(status);
	72	if (!exception) {
	73
	74	/* Exception code was not recognized */
	75
	76	ACPI_ERROR((AE_INFO,
	77	"Unknown exception code: 0x%8.8X", status));
	78
ae1b4769	79	return ("UNKNOWN_STATUS_CODE");
bc7db145 BM	80	}
bc7db145 BM	81
ae1b4769	82	return (exception->name);
bc7db145 BM	83	}
	84
	85	ACPI_EXPORT_SYMBOL(acpi_format_exception)
	86
	87	/*******************************************************************************
	88	*
	89	* FUNCTION: acpi_ut_validate_exception
	90	*
	91	* PARAMETERS: status - The acpi_status code to be formatted
	92	*
	93	* RETURN: A string containing the exception text. NULL if exception is
	94	* not valid.
	95	*
	96	* DESCRIPTION: This function validates and translates an ACPI exception into
	97	* an ASCII string.
	98	*
	99	******************************************************************************/
ae1b4769	100	const struct acpi_exception_info *acpi_ut_validate_exception(acpi_status status)
bc7db145 BM	101	{
bc7db145 BM	102	u32 sub_status;
ae1b4769	103	const struct acpi_exception_info *exception = NULL;
bc7db145 BM	104
	105	ACPI_FUNCTION_ENTRY();
	106
	107	/*
	108	* Status is composed of two parts, a "type" and an actual code
	109	*/
	110	sub_status = (status & ~AE_CODE_MASK);
	111
	112	switch (status & AE_CODE_MASK) {
	113	case AE_CODE_ENVIRONMENTAL:
	114
	115	if (sub_status <= AE_CODE_ENV_MAX) {
ae1b4769	116	exception = &acpi_gbl_exception_names_env[sub_status];
bc7db145 BM	117	}
	118	break;
	119
	120	case AE_CODE_PROGRAMMER:
	121
	122	if (sub_status <= AE_CODE_PGM_MAX) {
ae1b4769	123	exception = &acpi_gbl_exception_names_pgm[sub_status];
bc7db145 BM	124	}
	125	break;
	126
	127	case AE_CODE_ACPI_TABLES:
	128
	129	if (sub_status <= AE_CODE_TBL_MAX) {
ae1b4769	130	exception = &acpi_gbl_exception_names_tbl[sub_status];
bc7db145 BM	131	}
	132	break;
	133
	134	case AE_CODE_AML:
	135
	136	if (sub_status <= AE_CODE_AML_MAX) {
ae1b4769	137	exception = &acpi_gbl_exception_names_aml[sub_status];
bc7db145 BM	138	}
	139	break;
	140
	141	case AE_CODE_CONTROL:
	142
	143	if (sub_status <= AE_CODE_CTRL_MAX) {
ae1b4769	144	exception = &acpi_gbl_exception_names_ctrl[sub_status];
bc7db145 BM	145	}
	146	break;
	147
	148	default:
	149	break;
	150	}
	151
ae1b4769 BM	152	if (!exception \|\| !exception->name) {
	153	return (NULL);
	154	}
	155
	156	return (exception);
bc7db145	157	}