Quelle  rsaddr.c   Sprache: C

// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
 *
 * Module Name: rsaddr - Address resource descriptors (16/32/64)
 *
 ******************************************************************************/

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

#define _COMPONENT          ACPI_RESOURCES
ACPI_MODULE_NAME("rsaddr")

/*******************************************************************************
 *
 * acpi_rs_convert_address16 - All WORD (16-bit) address resources
 *
 ******************************************************************************/
struct acpi_rsconvert_info acpi_rs_convert_address16[5] = {
 {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_ADDRESS16,
  ACPI_RS_SIZE(struct acpi_resource_address16),
  ACPI_RSC_TABLE_SIZE(acpi_rs_convert_address16)},

 {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_ADDRESS16,
  sizeof(struct aml_resource_address16),
  0},

 /* Resource Type, General Flags, and Type-Specific Flags */

 {ACPI_RSC_ADDRESS, 0, 0, 0},

 /*
  * These fields are contiguous in both the source and destination:
  * Address Granularity
  * Address Range Minimum
  * Address Range Maximum
  * Address Translation Offset
  * Address Length
 */
 {ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.address16.address.granularity),
  AML_OFFSET(address16.granularity),
  5},

 /* Optional resource_source (Index and String) */

 {ACPI_RSC_SOURCE, ACPI_RS_OFFSET(data.address16.resource_source),
  0,
  sizeof(struct aml_resource_address16)}
};

/*******************************************************************************
 *
 * acpi_rs_convert_address32 - All DWORD (32-bit) address resources
 *
 ******************************************************************************/

struct acpi_rsconvert_info acpi_rs_convert_address32[5] = {
 {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_ADDRESS32,
  ACPI_RS_SIZE(struct acpi_resource_address32),
  ACPI_RSC_TABLE_SIZE(acpi_rs_convert_address32)},

 {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_ADDRESS32,
  sizeof(struct aml_resource_address32),
  0},

 /* Resource Type, General Flags, and Type-Specific Flags */

 {ACPI_RSC_ADDRESS, 0, 0, 0},

 /*
  * These fields are contiguous in both the source and destination:
  * Address Granularity
  * Address Range Minimum
  * Address Range Maximum
  * Address Translation Offset
  * Address Length
 */
 {ACPI_RSC_MOVE32, ACPI_RS_OFFSET(data.address32.address.granularity),
  AML_OFFSET(address32.granularity),
  5},

 /* Optional resource_source (Index and String) */

 {ACPI_RSC_SOURCE, ACPI_RS_OFFSET(data.address32.resource_source),
  0,
  sizeof(struct aml_resource_address32)}
};

/*******************************************************************************
 *
 * acpi_rs_convert_address64 - All QWORD (64-bit) address resources
 *
 ******************************************************************************/

struct acpi_rsconvert_info acpi_rs_convert_address64[5] = {
 {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_ADDRESS64,
  ACPI_RS_SIZE(struct acpi_resource_address64),
  ACPI_RSC_TABLE_SIZE(acpi_rs_convert_address64)},

 {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_ADDRESS64,
  sizeof(struct aml_resource_address64),
  0},

 /* Resource Type, General Flags, and Type-Specific Flags */

 {ACPI_RSC_ADDRESS, 0, 0, 0},

 /*
  * These fields are contiguous in both the source and destination:
  * Address Granularity
  * Address Range Minimum
  * Address Range Maximum
  * Address Translation Offset
  * Address Length
 */
 {ACPI_RSC_MOVE64, ACPI_RS_OFFSET(data.address64.address.granularity),
  AML_OFFSET(address64.granularity),
  5},

 /* Optional resource_source (Index and String) */

 {ACPI_RSC_SOURCE, ACPI_RS_OFFSET(data.address64.resource_source),
  0,
  sizeof(struct aml_resource_address64)}
};

/*******************************************************************************
 *
 * acpi_rs_convert_ext_address64 - All Extended (64-bit) address resources
 *
 ******************************************************************************/

struct acpi_rsconvert_info acpi_rs_convert_ext_address64[5] = {
 {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64,
  ACPI_RS_SIZE(struct acpi_resource_extended_address64),
  ACPI_RSC_TABLE_SIZE(acpi_rs_convert_ext_address64)},

 {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64,
  sizeof(struct aml_resource_extended_address64),
  0},

 /* Resource Type, General Flags, and Type-Specific Flags */

 {ACPI_RSC_ADDRESS, 0, 0, 0},

 /* Revision ID */

 {ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.ext_address64.revision_ID),
  AML_OFFSET(ext_address64.revision_ID),
  1},
 /*
  * These fields are contiguous in both the source and destination:
  * Address Granularity
  * Address Range Minimum
  * Address Range Maximum
  * Address Translation Offset
  * Address Length
  * Type-Specific Attribute
 */
 {ACPI_RSC_MOVE64,
  ACPI_RS_OFFSET(data.ext_address64.address.granularity),
  AML_OFFSET(ext_address64.granularity),
  6}
};

/*******************************************************************************
 *
 * acpi_rs_convert_general_flags - Flags common to all address descriptors
 *
 ******************************************************************************/

static struct acpi_rsconvert_info acpi_rs_convert_general_flags[6] = {
 {ACPI_RSC_FLAGINIT, 0, AML_OFFSET(address.flags),
  ACPI_RSC_TABLE_SIZE(acpi_rs_convert_general_flags)},

 /* Resource Type (Memory, Io, bus_number, etc.) */

 {ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.address.resource_type),
  AML_OFFSET(address.resource_type),
  1},

 /* General flags - Consume, Decode, min_fixed, max_fixed */

 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.producer_consumer),
  AML_OFFSET(address.flags),
  0},

 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.decode),
  AML_OFFSET(address.flags),
  1},

 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.min_address_fixed),
  AML_OFFSET(address.flags),
  2},

 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.max_address_fixed),
  AML_OFFSET(address.flags),
  3}
};

/*******************************************************************************
 *
 * acpi_rs_convert_mem_flags - Flags common to Memory address descriptors
 *
 ******************************************************************************/

static struct acpi_rsconvert_info acpi_rs_convert_mem_flags[5] = {
 {ACPI_RSC_FLAGINIT, 0, AML_OFFSET(address.specific_flags),
  ACPI_RSC_TABLE_SIZE(acpi_rs_convert_mem_flags)},

 /* Memory-specific flags */

 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.info.mem.write_protect),
  AML_OFFSET(address.specific_flags),
  0},

 {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.address.info.mem.caching),
  AML_OFFSET(address.specific_flags),
  1},

 {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.address.info.mem.range_type),
  AML_OFFSET(address.specific_flags),
  3},

 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.info.mem.translation),
  AML_OFFSET(address.specific_flags),
  5}
};

/*******************************************************************************
 *
 * acpi_rs_convert_io_flags - Flags common to I/O address descriptors
 *
 ******************************************************************************/

static struct acpi_rsconvert_info acpi_rs_convert_io_flags[4] = {
 {ACPI_RSC_FLAGINIT, 0, AML_OFFSET(address.specific_flags),
  ACPI_RSC_TABLE_SIZE(acpi_rs_convert_io_flags)},

 /* I/O-specific flags */

 {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.address.info.io.range_type),
  AML_OFFSET(address.specific_flags),
  0},

 {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.address.info.io.translation),
  AML_OFFSET(address.specific_flags),
  4},

 {ACPI_RSC_1BITFLAG,
  ACPI_RS_OFFSET(data.address.info.io.translation_type),
  AML_OFFSET(address.specific_flags),
  5}
};

/*******************************************************************************
 *
 * FUNCTION:    acpi_rs_get_address_common
 *
 * PARAMETERS:  resource            - Pointer to the internal resource struct
 *              aml                 - Pointer to the AML resource descriptor
 *
 * RETURN:      TRUE if the resource_type field is OK, FALSE otherwise
 *
 * DESCRIPTION: Convert common flag fields from a raw AML resource descriptor
 *              to an internal resource descriptor
 *
 ******************************************************************************/

u8
acpi_rs_get_address_common(struct acpi_resource *resource,
      union aml_resource *aml)
{
 ACPI_FUNCTION_ENTRY();

 /* Validate the Resource Type */

 if ((aml->address.resource_type > 2) &&
     (aml->address.resource_type < 0xC0) &&
     (aml->address.resource_type != 0x0A)) {
  return (FALSE);
 }

 /* Get the Resource Type and General Flags */

 (void)acpi_rs_convert_aml_to_resource(resource, aml,
           acpi_rs_convert_general_flags);

 /* Get the Type-Specific Flags (Memory and I/O descriptors only) */

 if (resource->data.address.resource_type == ACPI_MEMORY_RANGE) {
  (void)acpi_rs_convert_aml_to_resource(resource, aml,
            acpi_rs_convert_mem_flags);
 } else if (resource->data.address.resource_type == ACPI_IO_RANGE) {
  (void)acpi_rs_convert_aml_to_resource(resource, aml,
            acpi_rs_convert_io_flags);
 } else {
  /* Generic resource type, just grab the type_specific byte */

  resource->data.address.info.type_specific =
      aml->address.specific_flags;
 }

 return (TRUE);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_rs_set_address_common
 *
 * PARAMETERS:  aml                 - Pointer to the AML resource descriptor
 *              resource            - Pointer to the internal resource struct
 *
 * RETURN:      None
 *
 * DESCRIPTION: Convert common flag fields from a resource descriptor to an
 *              AML descriptor
 *
 ******************************************************************************/

void
acpi_rs_set_address_common(union aml_resource *aml,
      struct acpi_resource *resource)
{
 ACPI_FUNCTION_ENTRY();

 /* Set the Resource Type and General Flags */

 (void)acpi_rs_convert_resource_to_aml(resource, aml,
           acpi_rs_convert_general_flags);

 /* Set the Type-Specific Flags (Memory and I/O descriptors only) */

 if (resource->data.address.resource_type == ACPI_MEMORY_RANGE) {
  (void)acpi_rs_convert_resource_to_aml(resource, aml,
            acpi_rs_convert_mem_flags);
 } else if (resource->data.address.resource_type == ACPI_IO_RANGE) {
  (void)acpi_rs_convert_resource_to_aml(resource, aml,
            acpi_rs_convert_io_flags);
 } else {
  /* Generic resource type, just copy the type_specific byte */

  aml->address.specific_flags =
      resource->data.address.info.type_specific;
 }
}