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rsio.c

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

/*
 * 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/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[5] = {
      {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},

      /* 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[6] = {
      {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 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)}
};

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