linux/drivers/acpi/resources/rsmisc.c
Bob Moore b8e4d89357 [ACPI] ACPICA 20060127
Implemented support in the Resource Manager to allow
unresolved namestring references within resource package
objects for the _PRT method. This support is in addition
to the previously implemented unresolved reference
support within the AML parser. If the interpreter slack
mode is enabled (true on Linux unless acpi=strict),
these unresolved references will be passed through
to the caller as a NULL package entry.
http://bugzilla.kernel.org/show_bug.cgi?id=5741

Implemented and deployed new macros and functions for
error and warning messages across the subsystem. These
macros are simpler and generate less code than their
predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_*
macros.

Implemented the acpi_cpu_flags type to simplify host OS
integration of the Acquire/Release Lock OSL interfaces.
Suggested by Steven Rostedt and Andrew Morton.

Fixed a problem where Alias ASL operators are sometimes
not correctly resolved. causing AE_AML_INTERNAL
http://bugzilla.kernel.org/show_bug.cgi?id=5189
http://bugzilla.kernel.org/show_bug.cgi?id=5674

Fixed several problems with the implementation of the
ConcatenateResTemplate ASL operator. As per the ACPI
specification, zero length buffers are now treated as a
single EndTag. One-length buffers always cause a fatal
exception. Non-zero length buffers that do not end with
a full 2-byte EndTag cause a fatal exception.

Fixed a possible structure overwrite in the
AcpiGetObjectInfo external interface. (With assistance
from Thomas Renninger)

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-01-31 03:25:09 -05:00

548 lines
14 KiB
C

/*******************************************************************************
*
* Module Name: rsmisc - Miscellaneous resource descriptors
*
******************************************************************************/
/*
* Copyright (C) 2000 - 2006, 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("rsmisc")
#define INIT_RESOURCE_TYPE(i) i->resource_offset
#define INIT_RESOURCE_LENGTH(i) i->aml_offset
#define INIT_TABLE_LENGTH(i) i->value
#define COMPARE_OPCODE(i) i->resource_offset
#define COMPARE_TARGET(i) i->aml_offset
#define COMPARE_VALUE(i) i->value
/*******************************************************************************
*
* FUNCTION: acpi_rs_convert_aml_to_resource
*
* PARAMETERS: Resource - Pointer to the resource descriptor
* Aml - Where the AML descriptor is returned
* Info - Pointer to appropriate conversion table
*
* RETURN: Status
*
* DESCRIPTION: Convert an external AML resource descriptor to the corresponding
* internal resource descriptor
*
******************************************************************************/
acpi_status
acpi_rs_convert_aml_to_resource(struct acpi_resource *resource,
union aml_resource *aml,
struct acpi_rsconvert_info *info)
{
acpi_rs_length aml_resource_length;
void *source;
void *destination;
char *target;
u8 count;
u8 flags_mode = FALSE;
u16 item_count = 0;
u16 temp16 = 0;
ACPI_FUNCTION_TRACE("rs_get_resource");
if (((acpi_native_uint) resource) & 0x3) {
/* Each internal resource struct is expected to be 32-bit aligned */
ACPI_WARNING((AE_INFO,
"Misaligned resource pointer (get): %p Type %2.2X Len %X",
resource, resource->type, resource->length));
}
/* Extract the resource Length field (does not include header length) */
aml_resource_length = acpi_ut_get_resource_length(aml);
/*
* First table entry must be ACPI_RSC_INITxxx and must contain the
* table length (# of table entries)
*/
count = INIT_TABLE_LENGTH(info);
while (count) {
/*
* Source is the external AML byte stream buffer,
* destination is the internal resource descriptor
*/
source = ACPI_ADD_PTR(void, aml, info->aml_offset);
destination =
ACPI_ADD_PTR(void, resource, info->resource_offset);
switch (info->opcode) {
case ACPI_RSC_INITGET:
/*
* Get the resource type and the initial (minimum) length
*/
ACPI_MEMSET(resource, 0, INIT_RESOURCE_LENGTH(info));
resource->type = INIT_RESOURCE_TYPE(info);
resource->length = INIT_RESOURCE_LENGTH(info);
break;
case ACPI_RSC_INITSET:
break;
case ACPI_RSC_FLAGINIT:
flags_mode = TRUE;
break;
case ACPI_RSC_1BITFLAG:
/*
* Mask and shift the flag bit
*/
ACPI_SET8(destination) = (u8)
((ACPI_GET8(source) >> info->value) & 0x01);
break;
case ACPI_RSC_2BITFLAG:
/*
* Mask and shift the flag bits
*/
ACPI_SET8(destination) = (u8)
((ACPI_GET8(source) >> info->value) & 0x03);
break;
case ACPI_RSC_COUNT:
item_count = ACPI_GET8(source);
ACPI_SET8(destination) = (u8) item_count;
resource->length = resource->length +
(info->value * (item_count - 1));
break;
case ACPI_RSC_COUNT16:
item_count = aml_resource_length;
ACPI_SET16(destination) = item_count;
resource->length = resource->length +
(info->value * (item_count - 1));
break;
case ACPI_RSC_LENGTH:
resource->length = resource->length + info->value;
break;
case ACPI_RSC_MOVE8:
case ACPI_RSC_MOVE16:
case ACPI_RSC_MOVE32:
case ACPI_RSC_MOVE64:
/*
* Raw data move. Use the Info value field unless item_count has
* been previously initialized via a COUNT opcode
*/
if (info->value) {
item_count = info->value;
}
acpi_rs_move_data(destination, source, item_count,
info->opcode);
break;
case ACPI_RSC_SET8:
ACPI_MEMSET(destination, info->aml_offset, info->value);
break;
case ACPI_RSC_DATA8:
target = ACPI_ADD_PTR(char, resource, info->value);
ACPI_MEMCPY(destination, source, ACPI_GET16(target));
break;
case ACPI_RSC_ADDRESS:
/*
* Common handler for address descriptor flags
*/
if (!acpi_rs_get_address_common(resource, aml)) {
return_ACPI_STATUS
(AE_AML_INVALID_RESOURCE_TYPE);
}
break;
case ACPI_RSC_SOURCE:
/*
* Optional resource_source (Index and String)
*/
resource->length +=
acpi_rs_get_resource_source(aml_resource_length,
info->value,
destination, aml, NULL);
break;
case ACPI_RSC_SOURCEX:
/*
* Optional resource_source (Index and String). This is the more
* complicated case used by the Interrupt() macro
*/
target =
ACPI_ADD_PTR(char, resource,
info->aml_offset + (item_count * 4));
resource->length +=
acpi_rs_get_resource_source(aml_resource_length,
(acpi_rs_length) (((item_count - 1) * sizeof(u32)) + info->value), destination, aml, target);
break;
case ACPI_RSC_BITMASK:
/*
* 8-bit encoded bitmask (DMA macro)
*/
item_count =
acpi_rs_decode_bitmask(ACPI_GET8(source),
destination);
if (item_count) {
resource->length += (item_count - 1);
}
target = ACPI_ADD_PTR(char, resource, info->value);
ACPI_SET8(target) = (u8) item_count;
break;
case ACPI_RSC_BITMASK16:
/*
* 16-bit encoded bitmask (IRQ macro)
*/
ACPI_MOVE_16_TO_16(&temp16, source);
item_count =
acpi_rs_decode_bitmask(temp16, destination);
if (item_count) {
resource->length += (item_count - 1);
}
target = ACPI_ADD_PTR(char, resource, info->value);
ACPI_SET8(target) = (u8) item_count;
break;
case ACPI_RSC_EXIT_NE:
/*
* Control - Exit conversion if not equal
*/
switch (info->resource_offset) {
case ACPI_RSC_COMPARE_AML_LENGTH:
if (aml_resource_length != info->value) {
goto exit;
}
break;
case ACPI_RSC_COMPARE_VALUE:
if (ACPI_GET8(source) != info->value) {
goto exit;
}
break;
default:
ACPI_ERROR((AE_INFO,
"Invalid conversion sub-opcode"));
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
break;
default:
ACPI_ERROR((AE_INFO, "Invalid conversion opcode"));
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
count--;
info++;
}
exit:
if (!flags_mode) {
/* Round the resource struct length up to the next 32-bit boundary */
resource->length = ACPI_ROUND_UP_to_32_bITS(resource->length);
}
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_convert_resource_to_aml
*
* PARAMETERS: Resource - Pointer to the resource descriptor
* Aml - Where the AML descriptor is returned
* Info - Pointer to appropriate conversion table
*
* RETURN: Status
*
* DESCRIPTION: Convert an internal resource descriptor to the corresponding
* external AML resource descriptor.
*
******************************************************************************/
acpi_status
acpi_rs_convert_resource_to_aml(struct acpi_resource *resource,
union aml_resource *aml,
struct acpi_rsconvert_info *info)
{
void *source = NULL;
void *destination;
acpi_rsdesc_size aml_length = 0;
u8 count;
u16 temp16 = 0;
u16 item_count = 0;
ACPI_FUNCTION_TRACE("rs_convert_resource_to_aml");
/*
* First table entry must be ACPI_RSC_INITxxx and must contain the
* table length (# of table entries)
*/
count = INIT_TABLE_LENGTH(info);
while (count) {
/*
* Source is the internal resource descriptor,
* destination is the external AML byte stream buffer
*/
source = ACPI_ADD_PTR(void, resource, info->resource_offset);
destination = ACPI_ADD_PTR(void, aml, info->aml_offset);
switch (info->opcode) {
case ACPI_RSC_INITSET:
ACPI_MEMSET(aml, 0, INIT_RESOURCE_LENGTH(info));
aml_length = INIT_RESOURCE_LENGTH(info);
acpi_rs_set_resource_header(INIT_RESOURCE_TYPE(info),
aml_length, aml);
break;
case ACPI_RSC_INITGET:
break;
case ACPI_RSC_FLAGINIT:
/*
* Clear the flag byte
*/
ACPI_SET8(destination) = 0;
break;
case ACPI_RSC_1BITFLAG:
/*
* Mask and shift the flag bit
*/
ACPI_SET8(destination) |= (u8)
((ACPI_GET8(source) & 0x01) << info->value);
break;
case ACPI_RSC_2BITFLAG:
/*
* Mask and shift the flag bits
*/
ACPI_SET8(destination) |= (u8)
((ACPI_GET8(source) & 0x03) << info->value);
break;
case ACPI_RSC_COUNT:
item_count = ACPI_GET8(source);
ACPI_SET8(destination) = (u8) item_count;
aml_length =
(u16) (aml_length +
(info->value * (item_count - 1)));
break;
case ACPI_RSC_COUNT16:
item_count = ACPI_GET16(source);
aml_length = (u16) (aml_length + item_count);
acpi_rs_set_resource_length(aml_length, aml);
break;
case ACPI_RSC_LENGTH:
acpi_rs_set_resource_length(info->value, aml);
break;
case ACPI_RSC_MOVE8:
case ACPI_RSC_MOVE16:
case ACPI_RSC_MOVE32:
case ACPI_RSC_MOVE64:
if (info->value) {
item_count = info->value;
}
acpi_rs_move_data(destination, source, item_count,
info->opcode);
break;
case ACPI_RSC_ADDRESS:
/* Set the Resource Type, General Flags, and Type-Specific Flags */
acpi_rs_set_address_common(aml, resource);
break;
case ACPI_RSC_SOURCEX:
/*
* Optional resource_source (Index and String)
*/
aml_length =
acpi_rs_set_resource_source(aml,
(acpi_rs_length)
aml_length, source);
acpi_rs_set_resource_length(aml_length, aml);
break;
case ACPI_RSC_SOURCE:
/*
* Optional resource_source (Index and String). This is the more
* complicated case used by the Interrupt() macro
*/
aml_length =
acpi_rs_set_resource_source(aml, info->value,
source);
acpi_rs_set_resource_length(aml_length, aml);
break;
case ACPI_RSC_BITMASK:
/*
* 8-bit encoded bitmask (DMA macro)
*/
ACPI_SET8(destination) = (u8)
acpi_rs_encode_bitmask(source,
*ACPI_ADD_PTR(u8, resource,
info->value));
break;
case ACPI_RSC_BITMASK16:
/*
* 16-bit encoded bitmask (IRQ macro)
*/
temp16 = acpi_rs_encode_bitmask(source,
*ACPI_ADD_PTR(u8,
resource,
info->
value));
ACPI_MOVE_16_TO_16(destination, &temp16);
break;
case ACPI_RSC_EXIT_LE:
/*
* Control - Exit conversion if less than or equal
*/
if (item_count <= info->value) {
goto exit;
}
break;
case ACPI_RSC_EXIT_NE:
/*
* Control - Exit conversion if not equal
*/
switch (COMPARE_OPCODE(info)) {
case ACPI_RSC_COMPARE_VALUE:
if (*ACPI_ADD_PTR(u8, resource,
COMPARE_TARGET(info)) !=
COMPARE_VALUE(info)) {
goto exit;
}
break;
default:
ACPI_ERROR((AE_INFO,
"Invalid conversion sub-opcode"));
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
break;
default:
ACPI_ERROR((AE_INFO, "Invalid conversion opcode"));
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
count--;
info++;
}
exit:
return_ACPI_STATUS(AE_OK);
}
#if 0
/* Previous resource validations */
if (aml->ext_address64.revision_iD != AML_RESOURCE_EXTENDED_ADDRESS_REVISION) {
return_ACPI_STATUS(AE_SUPPORT);
}
if (resource->data.start_dpf.performance_robustness >= 3) {
return_ACPI_STATUS(AE_AML_BAD_RESOURCE_VALUE);
}
if (((aml->irq.flags & 0x09) == 0x00) || ((aml->irq.flags & 0x09) == 0x09)) {
/*
* Only [active_high, edge_sensitive] or [active_low, level_sensitive]
* polarity/trigger interrupts are allowed (ACPI spec, section
* "IRQ Format"), so 0x00 and 0x09 are illegal.
*/
ACPI_ERROR((AE_INFO,
"Invalid interrupt polarity/trigger in resource list, %X",
aml->irq.flags));
return_ACPI_STATUS(AE_BAD_DATA);
}
resource->data.extended_irq.interrupt_count = temp8;
if (temp8 < 1) {
/* Must have at least one IRQ */
return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
}
if (resource->data.dma.transfer == 0x03) {
ACPI_ERROR((AE_INFO, "Invalid DMA.Transfer preference (3)"));
return_ACPI_STATUS(AE_BAD_DATA);
}
#endif