drivers/acpi/acpica/rsio.c - arm/linux - Git at Google

 /*******************************************************************************
  *
  * Module Name: rsio - IO and DMA resource descriptors
  *
  ******************************************************************************/

 /*
  * Copyright (C) 2000 - 2017, 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.
  */

 #include <acpi/acpi.h>
 #include "accommon.h"
 #include "acresrc.h"

 #define _COMPONENT          ACPI_RESOURCES
 ACPI_MODULE_NAME("rsio")

 /*******************************************************************************
  *
  * acpi_rs_convert_io
  *
  ******************************************************************************/
 struct acpi_rsconvert_info acpi_rs_convert_io[5] = {
 	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_IO,
 	 ACPI_RS_SIZE(struct acpi_resource_io),
 	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_io)},

 	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_IO,
 	 sizeof(struct aml_resource_io),
 	 0},

 	/* Decode flag */

 	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.io.io_decode),
 	 AML_OFFSET(io.flags),
 	 0},
 	/*
 	 * These fields are contiguous in both the source and destination:
 	 * Address Alignment
 	 * Length
 	 * Minimum Base Address
 	 * Maximum Base Address
 	 */
 	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.io.alignment),
 	 AML_OFFSET(io.alignment),
 	 2},

 	{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.io.minimum),
 	 AML_OFFSET(io.minimum),
 	 2}
 };

 /*******************************************************************************
  *
  * acpi_rs_convert_fixed_io
  *
  ******************************************************************************/

 struct acpi_rsconvert_info acpi_rs_convert_fixed_io[4] = {
 	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_FIXED_IO,
 	 ACPI_RS_SIZE(struct acpi_resource_fixed_io),
 	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_fixed_io)},

 	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_FIXED_IO,
 	 sizeof(struct aml_resource_fixed_io),
 	 0},
 	/*
 	 * These fields are contiguous in both the source and destination:
 	 * Base Address
 	 * Length
 	 */
 	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.fixed_io.address_length),
 	 AML_OFFSET(fixed_io.address_length),
 	 1},

 	{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.fixed_io.address),
 	 AML_OFFSET(fixed_io.address),
 	 1}
 };

 /*******************************************************************************
  *
  * acpi_rs_convert_generic_reg
  *
  ******************************************************************************/

 struct acpi_rsconvert_info acpi_rs_convert_generic_reg[4] = {
 	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_GENERIC_REGISTER,
 	 ACPI_RS_SIZE(struct acpi_resource_generic_register),
 	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_generic_reg)},

 	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_GENERIC_REGISTER,
 	 sizeof(struct aml_resource_generic_register),
 	 0},
 	/*
 	 * These fields are contiguous in both the source and destination:
 	 * Address Space ID
 	 * Register Bit Width
 	 * Register Bit Offset
 	 * Access Size
 	 */
 	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.generic_reg.space_id),
 	 AML_OFFSET(generic_reg.address_space_id),
 	 4},

 	/* Get the Register Address */

 	{ACPI_RSC_MOVE64, ACPI_RS_OFFSET(data.generic_reg.address),
 	 AML_OFFSET(generic_reg.address),
 	 1}
 };

 /*******************************************************************************
  *
  * acpi_rs_convert_end_dpf
  *
  ******************************************************************************/

 struct acpi_rsconvert_info acpi_rs_convert_end_dpf[2] = {
 	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_END_DEPENDENT,
 	 ACPI_RS_SIZE_MIN,
 	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_end_dpf)},

 	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_END_DEPENDENT,
 	 sizeof(struct aml_resource_end_dependent),
 	 0}
 };

 /*******************************************************************************
  *
  * acpi_rs_convert_end_tag
  *
  ******************************************************************************/

 struct acpi_rsconvert_info acpi_rs_convert_end_tag[2] = {
 	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_END_TAG,
 	 ACPI_RS_SIZE_MIN,
 	 ACPI_RSC_TABLE_SIZE(acpi_rs_convert_end_tag)},

 	/*
 	 * Note: The checksum field is set to zero, meaning that the resource
 	 * data is treated as if the checksum operation succeeded.
 	 * (ACPI Spec 1.0b Section 6.4.2.8)
 	 */
 	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_END_TAG,
 	 sizeof(struct aml_resource_end_tag),
 	 0}
 };

 /*******************************************************************************
  *
  * acpi_rs_get_start_dpf
  *
  ******************************************************************************/

 struct acpi_rsconvert_info acpi_rs_get_start_dpf[6] = {
 	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_START_DEPENDENT,
 	 ACPI_RS_SIZE(struct acpi_resource_start_dependent),
 	 ACPI_RSC_TABLE_SIZE(acpi_rs_get_start_dpf)},

 	/* Defaults for Compatibility and Performance priorities */

 	{ACPI_RSC_SET8, ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
 	 ACPI_ACCEPTABLE_CONFIGURATION,
 	 2},

 	/* Get the descriptor length (0 or 1 for Start Dpf descriptor) */

 	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.start_dpf.descriptor_length),
 	 AML_OFFSET(start_dpf.descriptor_type),
 	 0},

 	/* All done if there is no flag byte present in the descriptor */

 	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_AML_LENGTH, 0, 1},

 	/* Flag byte is present, get the flags */

 	{ACPI_RSC_2BITFLAG,
 	 ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
 	 AML_OFFSET(start_dpf.flags),
 	 0},

 	{ACPI_RSC_2BITFLAG,
 	 ACPI_RS_OFFSET(data.start_dpf.performance_robustness),
 	 AML_OFFSET(start_dpf.flags),
 	 2}
 };

 /*******************************************************************************
  *
  * acpi_rs_set_start_dpf
  *
  ******************************************************************************/

 struct acpi_rsconvert_info acpi_rs_set_start_dpf[10] = {
 	/* Start with a default descriptor of length 1 */

 	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_START_DEPENDENT,
 	 sizeof(struct aml_resource_start_dependent),
 	 ACPI_RSC_TABLE_SIZE(acpi_rs_set_start_dpf)},

 	/* Set the default flag values */

 	{ACPI_RSC_2BITFLAG,
 	 ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
 	 AML_OFFSET(start_dpf.flags),
 	 0},

 	{ACPI_RSC_2BITFLAG,
 	 ACPI_RS_OFFSET(data.start_dpf.performance_robustness),
 	 AML_OFFSET(start_dpf.flags),
 	 2},
 	/*
 	 * All done if the output descriptor length is required to be 1
 	 * (i.e., optimization to 0 bytes cannot be attempted)
 	 */
 	{ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
 	 ACPI_RS_OFFSET(data.start_dpf.descriptor_length),
 	 1},

 	/* Set length to 0 bytes (no flags byte) */

 	{ACPI_RSC_LENGTH, 0, 0,
 	 sizeof(struct aml_resource_start_dependent_noprio)},

 	/*
 	 * All done if the output descriptor length is required to be 0.
 	 *
 	 * TBD: Perhaps we should check for error if input flags are not
 	 * compatible with a 0-byte descriptor.
 	 */
 	{ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
 	 ACPI_RS_OFFSET(data.start_dpf.descriptor_length),
 	 0},

 	/* Reset length to 1 byte (descriptor with flags byte) */

 	{ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_start_dependent)},

 	/*
 	 * All done if flags byte is necessary -- if either priority value
 	 * is not ACPI_ACCEPTABLE_CONFIGURATION
 	 */
 	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
 	 ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
 	 ACPI_ACCEPTABLE_CONFIGURATION},

 	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
 	 ACPI_RS_OFFSET(data.start_dpf.performance_robustness),
 	 ACPI_ACCEPTABLE_CONFIGURATION},

 	/* Flag byte is not necessary */

 	{ACPI_RSC_LENGTH, 0, 0,
 	 sizeof(struct aml_resource_start_dependent_noprio)}
 };
	/*******************************************************************************
	*
	* Module Name: rsio - IO and DMA resource descriptors
	*
	******************************************************************************/

	/*
	* Copyright (C) 2000 - 2017, 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.
	*/

	#include <acpi/acpi.h>
	#include "accommon.h"
	#include "acresrc.h"

	#define _COMPONENT ACPI_RESOURCES
	ACPI_MODULE_NAME("rsio")

	/*******************************************************************************
	*
	* acpi_rs_convert_io
	*
	******************************************************************************/
	struct acpi_rsconvert_info acpi_rs_convert_io[5] = {
	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_IO,
	ACPI_RS_SIZE(struct acpi_resource_io),
	ACPI_RSC_TABLE_SIZE(acpi_rs_convert_io)},

	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_IO,
	sizeof(struct aml_resource_io),
	0},

	/* Decode flag */

	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.io.io_decode),
	AML_OFFSET(io.flags),
	0},
	/*
	* These fields are contiguous in both the source and destination:
	* Address Alignment
	* Length
	* Minimum Base Address
	* Maximum Base Address
	*/
	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.io.alignment),
	AML_OFFSET(io.alignment),
	2},

	{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.io.minimum),
	AML_OFFSET(io.minimum),
	2}
	};

	/*******************************************************************************
	*
	* acpi_rs_convert_fixed_io
	*
	******************************************************************************/

	struct acpi_rsconvert_info acpi_rs_convert_fixed_io[4] = {
	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_FIXED_IO,
	ACPI_RS_SIZE(struct acpi_resource_fixed_io),
	ACPI_RSC_TABLE_SIZE(acpi_rs_convert_fixed_io)},

	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_FIXED_IO,
	sizeof(struct aml_resource_fixed_io),
	0},
	/*
	* These fields are contiguous in both the source and destination:
	* Base Address
	* Length
	*/
	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.fixed_io.address_length),
	AML_OFFSET(fixed_io.address_length),
	1},

	{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.fixed_io.address),
	AML_OFFSET(fixed_io.address),
	1}
	};

	/*******************************************************************************
	*
	* acpi_rs_convert_generic_reg
	*
	******************************************************************************/

	struct acpi_rsconvert_info acpi_rs_convert_generic_reg[4] = {
	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_GENERIC_REGISTER,
	ACPI_RS_SIZE(struct acpi_resource_generic_register),
	ACPI_RSC_TABLE_SIZE(acpi_rs_convert_generic_reg)},

	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_GENERIC_REGISTER,
	sizeof(struct aml_resource_generic_register),
	0},
	/*
	* These fields are contiguous in both the source and destination:
	* Address Space ID
	* Register Bit Width
	* Register Bit Offset
	* Access Size
	*/
	{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.generic_reg.space_id),
	AML_OFFSET(generic_reg.address_space_id),
	4},

	/* Get the Register Address */

	{ACPI_RSC_MOVE64, ACPI_RS_OFFSET(data.generic_reg.address),
	AML_OFFSET(generic_reg.address),
	1}
	};

	/*******************************************************************************
	*
	* acpi_rs_convert_end_dpf
	*
	******************************************************************************/

	struct acpi_rsconvert_info acpi_rs_convert_end_dpf[2] = {
	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_END_DEPENDENT,
	ACPI_RS_SIZE_MIN,
	ACPI_RSC_TABLE_SIZE(acpi_rs_convert_end_dpf)},

	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_END_DEPENDENT,
	sizeof(struct aml_resource_end_dependent),
	0}
	};

	/*******************************************************************************
	*
	* acpi_rs_convert_end_tag
	*
	******************************************************************************/

	struct acpi_rsconvert_info acpi_rs_convert_end_tag[2] = {
	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_END_TAG,
	ACPI_RS_SIZE_MIN,
	ACPI_RSC_TABLE_SIZE(acpi_rs_convert_end_tag)},

	/*
	* Note: The checksum field is set to zero, meaning that the resource
	* data is treated as if the checksum operation succeeded.
	* (ACPI Spec 1.0b Section 6.4.2.8)
	*/
	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_END_TAG,
	sizeof(struct aml_resource_end_tag),
	0}
	};

	/*******************************************************************************
	*
	* acpi_rs_get_start_dpf
	*
	******************************************************************************/

	struct acpi_rsconvert_info acpi_rs_get_start_dpf[6] = {
	{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_START_DEPENDENT,
	ACPI_RS_SIZE(struct acpi_resource_start_dependent),
	ACPI_RSC_TABLE_SIZE(acpi_rs_get_start_dpf)},

	/* Defaults for Compatibility and Performance priorities */

	{ACPI_RSC_SET8, ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
	ACPI_ACCEPTABLE_CONFIGURATION,
	2},

	/* Get the descriptor length (0 or 1 for Start Dpf descriptor) */

	{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.start_dpf.descriptor_length),
	AML_OFFSET(start_dpf.descriptor_type),
	0},

	/* All done if there is no flag byte present in the descriptor */

	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_AML_LENGTH, 0, 1},

	/* Flag byte is present, get the flags */

	{ACPI_RSC_2BITFLAG,
	ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
	AML_OFFSET(start_dpf.flags),
	0},

	{ACPI_RSC_2BITFLAG,
	ACPI_RS_OFFSET(data.start_dpf.performance_robustness),
	AML_OFFSET(start_dpf.flags),
	2}
	};

	/*******************************************************************************
	*
	* acpi_rs_set_start_dpf
	*
	******************************************************************************/

	struct acpi_rsconvert_info acpi_rs_set_start_dpf[10] = {
	/* Start with a default descriptor of length 1 */

	{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_START_DEPENDENT,
	sizeof(struct aml_resource_start_dependent),
	ACPI_RSC_TABLE_SIZE(acpi_rs_set_start_dpf)},

	/* Set the default flag values */

	{ACPI_RSC_2BITFLAG,
	ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
	AML_OFFSET(start_dpf.flags),
	0},

	{ACPI_RSC_2BITFLAG,
	ACPI_RS_OFFSET(data.start_dpf.performance_robustness),
	AML_OFFSET(start_dpf.flags),
	2},
	/*
	* All done if the output descriptor length is required to be 1
	* (i.e., optimization to 0 bytes cannot be attempted)
	*/
	{ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
	ACPI_RS_OFFSET(data.start_dpf.descriptor_length),
	1},

	/* Set length to 0 bytes (no flags byte) */

	{ACPI_RSC_LENGTH, 0, 0,
	sizeof(struct aml_resource_start_dependent_noprio)},

	/*
	* All done if the output descriptor length is required to be 0.
	*
	* TBD: Perhaps we should check for error if input flags are not
	* compatible with a 0-byte descriptor.
	*/
	{ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
	ACPI_RS_OFFSET(data.start_dpf.descriptor_length),
	0},

	/* Reset length to 1 byte (descriptor with flags byte) */

	{ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_start_dependent)},

	/*
	* All done if flags byte is necessary -- if either priority value
	* is not ACPI_ACCEPTABLE_CONFIGURATION
	*/
	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
	ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
	ACPI_ACCEPTABLE_CONFIGURATION},

	{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
	ACPI_RS_OFFSET(data.start_dpf.performance_robustness),
	ACPI_ACCEPTABLE_CONFIGURATION},

	/* Flag byte is not necessary */

	{ACPI_RSC_LENGTH, 0, 0,
	sizeof(struct aml_resource_start_dependent_noprio)}
	};