255 lines
7.2 KiB
C
255 lines
7.2 KiB
C
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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/*******************************************************************************
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*
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* Module Name: rsio - IO and DMA resource descriptors
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*
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******************************************************************************/
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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "acresrc.h"
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#define _COMPONENT ACPI_RESOURCES
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ACPI_MODULE_NAME("rsio")
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/*******************************************************************************
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*
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* acpi_rs_convert_io
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*
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******************************************************************************/
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struct acpi_rsconvert_info acpi_rs_convert_io[5] = {
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{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_IO,
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ACPI_RS_SIZE(struct acpi_resource_io),
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ACPI_RSC_TABLE_SIZE(acpi_rs_convert_io)},
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{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_IO,
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sizeof(struct aml_resource_io),
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0},
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/* Decode flag */
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{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.io.io_decode),
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AML_OFFSET(io.flags),
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0},
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/*
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* These fields are contiguous in both the source and destination:
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* Address Alignment
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* Length
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* Minimum Base Address
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* Maximum Base Address
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*/
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{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.io.alignment),
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AML_OFFSET(io.alignment),
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2},
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{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.io.minimum),
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AML_OFFSET(io.minimum),
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2}
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};
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/*******************************************************************************
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*
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* acpi_rs_convert_fixed_io
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*
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******************************************************************************/
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struct acpi_rsconvert_info acpi_rs_convert_fixed_io[4] = {
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{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_FIXED_IO,
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ACPI_RS_SIZE(struct acpi_resource_fixed_io),
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ACPI_RSC_TABLE_SIZE(acpi_rs_convert_fixed_io)},
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{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_FIXED_IO,
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sizeof(struct aml_resource_fixed_io),
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0},
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/*
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* These fields are contiguous in both the source and destination:
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* Base Address
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* Length
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*/
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{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.fixed_io.address_length),
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AML_OFFSET(fixed_io.address_length),
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1},
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{ACPI_RSC_MOVE16, ACPI_RS_OFFSET(data.fixed_io.address),
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AML_OFFSET(fixed_io.address),
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1}
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};
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/*******************************************************************************
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*
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* acpi_rs_convert_generic_reg
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*
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******************************************************************************/
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struct acpi_rsconvert_info acpi_rs_convert_generic_reg[4] = {
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{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_GENERIC_REGISTER,
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ACPI_RS_SIZE(struct acpi_resource_generic_register),
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ACPI_RSC_TABLE_SIZE(acpi_rs_convert_generic_reg)},
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{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_GENERIC_REGISTER,
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sizeof(struct aml_resource_generic_register),
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0},
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/*
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* These fields are contiguous in both the source and destination:
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* Address Space ID
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* Register Bit Width
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* Register Bit Offset
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* Access Size
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*/
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{ACPI_RSC_MOVE8, ACPI_RS_OFFSET(data.generic_reg.space_id),
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AML_OFFSET(generic_reg.address_space_id),
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4},
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/* Get the Register Address */
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{ACPI_RSC_MOVE64, ACPI_RS_OFFSET(data.generic_reg.address),
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AML_OFFSET(generic_reg.address),
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1}
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};
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/*******************************************************************************
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*
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* acpi_rs_convert_end_dpf
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*
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******************************************************************************/
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struct acpi_rsconvert_info acpi_rs_convert_end_dpf[2] = {
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{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_END_DEPENDENT,
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ACPI_RS_SIZE_MIN,
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ACPI_RSC_TABLE_SIZE(acpi_rs_convert_end_dpf)},
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{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_END_DEPENDENT,
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sizeof(struct aml_resource_end_dependent),
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0}
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};
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/*******************************************************************************
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*
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* acpi_rs_convert_end_tag
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*
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******************************************************************************/
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struct acpi_rsconvert_info acpi_rs_convert_end_tag[2] = {
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{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_END_TAG,
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ACPI_RS_SIZE_MIN,
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ACPI_RSC_TABLE_SIZE(acpi_rs_convert_end_tag)},
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/*
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* Note: The checksum field is set to zero, meaning that the resource
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* data is treated as if the checksum operation succeeded.
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* (ACPI Spec 1.0b Section 6.4.2.8)
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*/
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{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_END_TAG,
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sizeof(struct aml_resource_end_tag),
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0}
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};
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/*******************************************************************************
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*
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* acpi_rs_get_start_dpf
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*
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******************************************************************************/
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struct acpi_rsconvert_info acpi_rs_get_start_dpf[6] = {
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{ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_START_DEPENDENT,
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ACPI_RS_SIZE(struct acpi_resource_start_dependent),
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ACPI_RSC_TABLE_SIZE(acpi_rs_get_start_dpf)},
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/* Defaults for Compatibility and Performance priorities */
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{ACPI_RSC_SET8, ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
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ACPI_ACCEPTABLE_CONFIGURATION,
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2},
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/* Get the descriptor length (0 or 1 for Start Dpf descriptor) */
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{ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.start_dpf.descriptor_length),
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AML_OFFSET(start_dpf.descriptor_type),
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0},
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/* All done if there is no flag byte present in the descriptor */
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{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_AML_LENGTH, 0, 1},
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/* Flag byte is present, get the flags */
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{ACPI_RSC_2BITFLAG,
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ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
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AML_OFFSET(start_dpf.flags),
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0},
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{ACPI_RSC_2BITFLAG,
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ACPI_RS_OFFSET(data.start_dpf.performance_robustness),
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AML_OFFSET(start_dpf.flags),
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2}
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};
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/*******************************************************************************
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*
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* acpi_rs_set_start_dpf
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*
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******************************************************************************/
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struct acpi_rsconvert_info acpi_rs_set_start_dpf[10] = {
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/* Start with a default descriptor of length 1 */
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{ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_START_DEPENDENT,
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sizeof(struct aml_resource_start_dependent),
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ACPI_RSC_TABLE_SIZE(acpi_rs_set_start_dpf)},
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/* Set the default flag values */
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{ACPI_RSC_2BITFLAG,
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ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
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AML_OFFSET(start_dpf.flags),
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0},
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{ACPI_RSC_2BITFLAG,
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ACPI_RS_OFFSET(data.start_dpf.performance_robustness),
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AML_OFFSET(start_dpf.flags),
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2},
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/*
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* All done if the output descriptor length is required to be 1
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* (i.e., optimization to 0 bytes cannot be attempted)
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*/
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{ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
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ACPI_RS_OFFSET(data.start_dpf.descriptor_length),
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1},
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/* Set length to 0 bytes (no flags byte) */
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{ACPI_RSC_LENGTH, 0, 0,
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sizeof(struct aml_resource_start_dependent_noprio)},
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/*
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* All done if the output descriptor length is required to be 0.
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*
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* TBD: Perhaps we should check for error if input flags are not
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* compatible with a 0-byte descriptor.
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*/
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{ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE,
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ACPI_RS_OFFSET(data.start_dpf.descriptor_length),
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0},
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/* Reset length to 1 byte (descriptor with flags byte) */
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{ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_start_dependent)},
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/*
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* All done if flags byte is necessary -- if either priority value
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* is not ACPI_ACCEPTABLE_CONFIGURATION
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*/
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{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
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ACPI_RS_OFFSET(data.start_dpf.compatibility_priority),
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ACPI_ACCEPTABLE_CONFIGURATION},
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{ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_VALUE,
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ACPI_RS_OFFSET(data.start_dpf.performance_robustness),
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ACPI_ACCEPTABLE_CONFIGURATION},
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/* Flag byte is not necessary */
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{ACPI_RSC_LENGTH, 0, 0,
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sizeof(struct aml_resource_start_dependent_noprio)}
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};
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