617 lines
16 KiB
C
617 lines
16 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: utresrc - Resource management utilities
|
|
*
|
|
******************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2008, 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 "amlresrc.h"
|
|
|
|
#define _COMPONENT ACPI_UTILITIES
|
|
ACPI_MODULE_NAME("utresrc")
|
|
#if defined(ACPI_DISASSEMBLER) || defined (ACPI_DEBUGGER)
|
|
/*
|
|
* Strings used to decode resource descriptors.
|
|
* Used by both the disasssembler and the debugger resource dump routines
|
|
*/
|
|
const char *acpi_gbl_bm_decode[] = {
|
|
"NotBusMaster",
|
|
"BusMaster"
|
|
};
|
|
|
|
const char *acpi_gbl_config_decode[] = {
|
|
"0 - Good Configuration",
|
|
"1 - Acceptable Configuration",
|
|
"2 - Suboptimal Configuration",
|
|
"3 - ***Invalid Configuration***",
|
|
};
|
|
|
|
const char *acpi_gbl_consume_decode[] = {
|
|
"ResourceProducer",
|
|
"ResourceConsumer"
|
|
};
|
|
|
|
const char *acpi_gbl_dec_decode[] = {
|
|
"PosDecode",
|
|
"SubDecode"
|
|
};
|
|
|
|
const char *acpi_gbl_he_decode[] = {
|
|
"Level",
|
|
"Edge"
|
|
};
|
|
|
|
const char *acpi_gbl_io_decode[] = {
|
|
"Decode10",
|
|
"Decode16"
|
|
};
|
|
|
|
const char *acpi_gbl_ll_decode[] = {
|
|
"ActiveHigh",
|
|
"ActiveLow"
|
|
};
|
|
|
|
const char *acpi_gbl_max_decode[] = {
|
|
"MaxNotFixed",
|
|
"MaxFixed"
|
|
};
|
|
|
|
const char *acpi_gbl_mem_decode[] = {
|
|
"NonCacheable",
|
|
"Cacheable",
|
|
"WriteCombining",
|
|
"Prefetchable"
|
|
};
|
|
|
|
const char *acpi_gbl_min_decode[] = {
|
|
"MinNotFixed",
|
|
"MinFixed"
|
|
};
|
|
|
|
const char *acpi_gbl_mtp_decode[] = {
|
|
"AddressRangeMemory",
|
|
"AddressRangeReserved",
|
|
"AddressRangeACPI",
|
|
"AddressRangeNVS"
|
|
};
|
|
|
|
const char *acpi_gbl_rng_decode[] = {
|
|
"InvalidRanges",
|
|
"NonISAOnlyRanges",
|
|
"ISAOnlyRanges",
|
|
"EntireRange"
|
|
};
|
|
|
|
const char *acpi_gbl_rw_decode[] = {
|
|
"ReadOnly",
|
|
"ReadWrite"
|
|
};
|
|
|
|
const char *acpi_gbl_shr_decode[] = {
|
|
"Exclusive",
|
|
"Shared"
|
|
};
|
|
|
|
const char *acpi_gbl_siz_decode[] = {
|
|
"Transfer8",
|
|
"Transfer8_16",
|
|
"Transfer16",
|
|
"InvalidSize"
|
|
};
|
|
|
|
const char *acpi_gbl_trs_decode[] = {
|
|
"DenseTranslation",
|
|
"SparseTranslation"
|
|
};
|
|
|
|
const char *acpi_gbl_ttp_decode[] = {
|
|
"TypeStatic",
|
|
"TypeTranslation"
|
|
};
|
|
|
|
const char *acpi_gbl_typ_decode[] = {
|
|
"Compatibility",
|
|
"TypeA",
|
|
"TypeB",
|
|
"TypeF"
|
|
};
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Base sizes of the raw AML resource descriptors, indexed by resource type.
|
|
* Zero indicates a reserved (and therefore invalid) resource type.
|
|
*/
|
|
const u8 acpi_gbl_resource_aml_sizes[] = {
|
|
/* Small descriptors */
|
|
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
ACPI_AML_SIZE_SMALL(struct aml_resource_irq),
|
|
ACPI_AML_SIZE_SMALL(struct aml_resource_dma),
|
|
ACPI_AML_SIZE_SMALL(struct aml_resource_start_dependent),
|
|
ACPI_AML_SIZE_SMALL(struct aml_resource_end_dependent),
|
|
ACPI_AML_SIZE_SMALL(struct aml_resource_io),
|
|
ACPI_AML_SIZE_SMALL(struct aml_resource_fixed_io),
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
ACPI_AML_SIZE_SMALL(struct aml_resource_vendor_small),
|
|
ACPI_AML_SIZE_SMALL(struct aml_resource_end_tag),
|
|
|
|
/* Large descriptors */
|
|
|
|
0,
|
|
ACPI_AML_SIZE_LARGE(struct aml_resource_memory24),
|
|
ACPI_AML_SIZE_LARGE(struct aml_resource_generic_register),
|
|
0,
|
|
ACPI_AML_SIZE_LARGE(struct aml_resource_vendor_large),
|
|
ACPI_AML_SIZE_LARGE(struct aml_resource_memory32),
|
|
ACPI_AML_SIZE_LARGE(struct aml_resource_fixed_memory32),
|
|
ACPI_AML_SIZE_LARGE(struct aml_resource_address32),
|
|
ACPI_AML_SIZE_LARGE(struct aml_resource_address16),
|
|
ACPI_AML_SIZE_LARGE(struct aml_resource_extended_irq),
|
|
ACPI_AML_SIZE_LARGE(struct aml_resource_address64),
|
|
ACPI_AML_SIZE_LARGE(struct aml_resource_extended_address64)
|
|
};
|
|
|
|
/*
|
|
* Resource types, used to validate the resource length field.
|
|
* The length of fixed-length types must match exactly, variable
|
|
* lengths must meet the minimum required length, etc.
|
|
* Zero indicates a reserved (and therefore invalid) resource type.
|
|
*/
|
|
static const u8 acpi_gbl_resource_types[] = {
|
|
/* Small descriptors */
|
|
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
ACPI_SMALL_VARIABLE_LENGTH,
|
|
ACPI_FIXED_LENGTH,
|
|
ACPI_SMALL_VARIABLE_LENGTH,
|
|
ACPI_FIXED_LENGTH,
|
|
ACPI_FIXED_LENGTH,
|
|
ACPI_FIXED_LENGTH,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
ACPI_VARIABLE_LENGTH,
|
|
ACPI_FIXED_LENGTH,
|
|
|
|
/* Large descriptors */
|
|
|
|
0,
|
|
ACPI_FIXED_LENGTH,
|
|
ACPI_FIXED_LENGTH,
|
|
0,
|
|
ACPI_VARIABLE_LENGTH,
|
|
ACPI_FIXED_LENGTH,
|
|
ACPI_FIXED_LENGTH,
|
|
ACPI_VARIABLE_LENGTH,
|
|
ACPI_VARIABLE_LENGTH,
|
|
ACPI_VARIABLE_LENGTH,
|
|
ACPI_VARIABLE_LENGTH,
|
|
ACPI_FIXED_LENGTH
|
|
};
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_walk_aml_resources
|
|
*
|
|
* PARAMETERS: Aml - Pointer to the raw AML resource template
|
|
* aml_length - Length of the entire template
|
|
* user_function - Called once for each descriptor found. If
|
|
* NULL, a pointer to the end_tag is returned
|
|
* Context - Passed to user_function
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Walk a raw AML resource list(buffer). User function called
|
|
* once for each resource found.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ut_walk_aml_resources(u8 * aml,
|
|
acpi_size aml_length,
|
|
acpi_walk_aml_callback user_function, void **context)
|
|
{
|
|
acpi_status status;
|
|
u8 *end_aml;
|
|
u8 resource_index;
|
|
u32 length;
|
|
u32 offset = 0;
|
|
|
|
ACPI_FUNCTION_TRACE(ut_walk_aml_resources);
|
|
|
|
/* The absolute minimum resource template is one end_tag descriptor */
|
|
|
|
if (aml_length < sizeof(struct aml_resource_end_tag)) {
|
|
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
|
|
}
|
|
|
|
/* Point to the end of the resource template buffer */
|
|
|
|
end_aml = aml + aml_length;
|
|
|
|
/* Walk the byte list, abort on any invalid descriptor type or length */
|
|
|
|
while (aml < end_aml) {
|
|
|
|
/* Validate the Resource Type and Resource Length */
|
|
|
|
status = acpi_ut_validate_resource(aml, &resource_index);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Get the length of this descriptor */
|
|
|
|
length = acpi_ut_get_descriptor_length(aml);
|
|
|
|
/* Invoke the user function */
|
|
|
|
if (user_function) {
|
|
status =
|
|
user_function(aml, length, offset, resource_index,
|
|
context);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
}
|
|
|
|
/* An end_tag descriptor terminates this resource template */
|
|
|
|
if (acpi_ut_get_resource_type(aml) ==
|
|
ACPI_RESOURCE_NAME_END_TAG) {
|
|
/*
|
|
* There must be at least one more byte in the buffer for
|
|
* the 2nd byte of the end_tag
|
|
*/
|
|
if ((aml + 1) >= end_aml) {
|
|
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
|
|
}
|
|
|
|
/* Return the pointer to the end_tag if requested */
|
|
|
|
if (!user_function) {
|
|
*context = aml;
|
|
}
|
|
|
|
/* Normal exit */
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
aml += length;
|
|
offset += length;
|
|
}
|
|
|
|
/* Did not find an end_tag descriptor */
|
|
|
|
return (AE_AML_NO_RESOURCE_END_TAG);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_validate_resource
|
|
*
|
|
* PARAMETERS: Aml - Pointer to the raw AML resource descriptor
|
|
* return_index - Where the resource index is returned. NULL
|
|
* if the index is not required.
|
|
*
|
|
* RETURN: Status, and optionally the Index into the global resource tables
|
|
*
|
|
* DESCRIPTION: Validate an AML resource descriptor by checking the Resource
|
|
* Type and Resource Length. Returns an index into the global
|
|
* resource information/dispatch tables for later use.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_ut_validate_resource(void *aml, u8 * return_index)
|
|
{
|
|
u8 resource_type;
|
|
u8 resource_index;
|
|
acpi_rs_length resource_length;
|
|
acpi_rs_length minimum_resource_length;
|
|
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
/*
|
|
* 1) Validate the resource_type field (Byte 0)
|
|
*/
|
|
resource_type = ACPI_GET8(aml);
|
|
|
|
/*
|
|
* Byte 0 contains the descriptor name (Resource Type)
|
|
* Examine the large/small bit in the resource header
|
|
*/
|
|
if (resource_type & ACPI_RESOURCE_NAME_LARGE) {
|
|
|
|
/* Verify the large resource type (name) against the max */
|
|
|
|
if (resource_type > ACPI_RESOURCE_NAME_LARGE_MAX) {
|
|
return (AE_AML_INVALID_RESOURCE_TYPE);
|
|
}
|
|
|
|
/*
|
|
* Large Resource Type -- bits 6:0 contain the name
|
|
* Translate range 0x80-0x8B to index range 0x10-0x1B
|
|
*/
|
|
resource_index = (u8) (resource_type - 0x70);
|
|
} else {
|
|
/*
|
|
* Small Resource Type -- bits 6:3 contain the name
|
|
* Shift range to index range 0x00-0x0F
|
|
*/
|
|
resource_index = (u8)
|
|
((resource_type & ACPI_RESOURCE_NAME_SMALL_MASK) >> 3);
|
|
}
|
|
|
|
/* Check validity of the resource type, zero indicates name is invalid */
|
|
|
|
if (!acpi_gbl_resource_types[resource_index]) {
|
|
return (AE_AML_INVALID_RESOURCE_TYPE);
|
|
}
|
|
|
|
/*
|
|
* 2) Validate the resource_length field. This ensures that the length
|
|
* is at least reasonable, and guarantees that it is non-zero.
|
|
*/
|
|
resource_length = acpi_ut_get_resource_length(aml);
|
|
minimum_resource_length = acpi_gbl_resource_aml_sizes[resource_index];
|
|
|
|
/* Validate based upon the type of resource - fixed length or variable */
|
|
|
|
switch (acpi_gbl_resource_types[resource_index]) {
|
|
case ACPI_FIXED_LENGTH:
|
|
|
|
/* Fixed length resource, length must match exactly */
|
|
|
|
if (resource_length != minimum_resource_length) {
|
|
return (AE_AML_BAD_RESOURCE_LENGTH);
|
|
}
|
|
break;
|
|
|
|
case ACPI_VARIABLE_LENGTH:
|
|
|
|
/* Variable length resource, length must be at least the minimum */
|
|
|
|
if (resource_length < minimum_resource_length) {
|
|
return (AE_AML_BAD_RESOURCE_LENGTH);
|
|
}
|
|
break;
|
|
|
|
case ACPI_SMALL_VARIABLE_LENGTH:
|
|
|
|
/* Small variable length resource, length can be (Min) or (Min-1) */
|
|
|
|
if ((resource_length > minimum_resource_length) ||
|
|
(resource_length < (minimum_resource_length - 1))) {
|
|
return (AE_AML_BAD_RESOURCE_LENGTH);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
/* Shouldn't happen (because of validation earlier), but be sure */
|
|
|
|
return (AE_AML_INVALID_RESOURCE_TYPE);
|
|
}
|
|
|
|
/* Optionally return the resource table index */
|
|
|
|
if (return_index) {
|
|
*return_index = resource_index;
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_get_resource_type
|
|
*
|
|
* PARAMETERS: Aml - Pointer to the raw AML resource descriptor
|
|
*
|
|
* RETURN: The Resource Type with no extraneous bits (except the
|
|
* Large/Small descriptor bit -- this is left alone)
|
|
*
|
|
* DESCRIPTION: Extract the Resource Type/Name from the first byte of
|
|
* a resource descriptor.
|
|
*
|
|
******************************************************************************/
|
|
|
|
u8 acpi_ut_get_resource_type(void *aml)
|
|
{
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
/*
|
|
* Byte 0 contains the descriptor name (Resource Type)
|
|
* Examine the large/small bit in the resource header
|
|
*/
|
|
if (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_LARGE) {
|
|
|
|
/* Large Resource Type -- bits 6:0 contain the name */
|
|
|
|
return (ACPI_GET8(aml));
|
|
} else {
|
|
/* Small Resource Type -- bits 6:3 contain the name */
|
|
|
|
return ((u8) (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_SMALL_MASK));
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_get_resource_length
|
|
*
|
|
* PARAMETERS: Aml - Pointer to the raw AML resource descriptor
|
|
*
|
|
* RETURN: Byte Length
|
|
*
|
|
* DESCRIPTION: Get the "Resource Length" of a raw AML descriptor. By
|
|
* definition, this does not include the size of the descriptor
|
|
* header or the length field itself.
|
|
*
|
|
******************************************************************************/
|
|
|
|
u16 acpi_ut_get_resource_length(void *aml)
|
|
{
|
|
acpi_rs_length resource_length;
|
|
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
/*
|
|
* Byte 0 contains the descriptor name (Resource Type)
|
|
* Examine the large/small bit in the resource header
|
|
*/
|
|
if (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_LARGE) {
|
|
|
|
/* Large Resource type -- bytes 1-2 contain the 16-bit length */
|
|
|
|
ACPI_MOVE_16_TO_16(&resource_length, ACPI_ADD_PTR(u8, aml, 1));
|
|
|
|
} else {
|
|
/* Small Resource type -- bits 2:0 of byte 0 contain the length */
|
|
|
|
resource_length = (u16) (ACPI_GET8(aml) &
|
|
ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK);
|
|
}
|
|
|
|
return (resource_length);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_get_resource_header_length
|
|
*
|
|
* PARAMETERS: Aml - Pointer to the raw AML resource descriptor
|
|
*
|
|
* RETURN: Length of the AML header (depends on large/small descriptor)
|
|
*
|
|
* DESCRIPTION: Get the length of the header for this resource.
|
|
*
|
|
******************************************************************************/
|
|
|
|
u8 acpi_ut_get_resource_header_length(void *aml)
|
|
{
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
/* Examine the large/small bit in the resource header */
|
|
|
|
if (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_LARGE) {
|
|
return (sizeof(struct aml_resource_large_header));
|
|
} else {
|
|
return (sizeof(struct aml_resource_small_header));
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_get_descriptor_length
|
|
*
|
|
* PARAMETERS: Aml - Pointer to the raw AML resource descriptor
|
|
*
|
|
* RETURN: Byte length
|
|
*
|
|
* DESCRIPTION: Get the total byte length of a raw AML descriptor, including the
|
|
* length of the descriptor header and the length field itself.
|
|
* Used to walk descriptor lists.
|
|
*
|
|
******************************************************************************/
|
|
|
|
u32 acpi_ut_get_descriptor_length(void *aml)
|
|
{
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
/*
|
|
* Get the Resource Length (does not include header length) and add
|
|
* the header length (depends on if this is a small or large resource)
|
|
*/
|
|
return (acpi_ut_get_resource_length(aml) +
|
|
acpi_ut_get_resource_header_length(aml));
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_get_resource_end_tag
|
|
*
|
|
* PARAMETERS: obj_desc - The resource template buffer object
|
|
* end_tag - Where the pointer to the end_tag is returned
|
|
*
|
|
* RETURN: Status, pointer to the end tag
|
|
*
|
|
* DESCRIPTION: Find the end_tag resource descriptor in an AML resource template
|
|
* Note: allows a buffer length of zero.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ut_get_resource_end_tag(union acpi_operand_object * obj_desc,
|
|
u8 ** end_tag)
|
|
{
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(ut_get_resource_end_tag);
|
|
|
|
/* Allow a buffer length of zero */
|
|
|
|
if (!obj_desc->buffer.length) {
|
|
*end_tag = obj_desc->buffer.pointer;
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
/* Validate the template and get a pointer to the end_tag */
|
|
|
|
status = acpi_ut_walk_aml_resources(obj_desc->buffer.pointer,
|
|
obj_desc->buffer.length, NULL,
|
|
(void **)end_tag);
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|