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0cc13a5442
linux/drivers/acpi/resources/rsaddr.c
Robert Moore aff8c2777d [ACPI] ACPICA 20050902 
Fixed a problem with the internal Owner ID allocation and
deallocation mechanisms for control method execution and
recursive method invocation.  This should eliminate the
OWNER_ID_LIMIT exceptions and "Invalid OwnerId" messages
seen on some systems.  Recursive method invocation depth
is currently limited to 255.  (Alexey Starikovskiy)

http://bugzilla.kernel.org/show_bug.cgi?id=4892

Completely eliminated all vestiges of support for the
"module-level executable code" until this support is
fully implemented and debugged.  This should eliminate the
NO_RETURN_VALUE exceptions seen during table load on some
systems that invoke this support.

http://bugzilla.kernel.org/show_bug.cgi?id=5162

Fixed a problem within the resource manager code where
the transaction flags for a 64-bit address descriptor were
handled incorrectly in the type-specific flag byte.

Consolidated duplicate code within the address descriptor
resource manager code, reducing overall subsystem code size.

Signed-off-by: Robert Moore <Robert.Moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2005-09-03 00:15:11 -04:00

1119 lines
31 KiB
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/*******************************************************************************
*
* Module Name: rsaddr - Address resource descriptors (16/32/64)
*
******************************************************************************/
/*
* Copyright (C) 2000 - 2005, 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("rsaddr")
/* Local prototypes */
static void
acpi_rs_decode_general_flags(union acpi_resource_data *resource, u8 flags);
static u8 acpi_rs_encode_general_flags(union acpi_resource_data *resource);
static void
acpi_rs_decode_specific_flags(union acpi_resource_data *resource, u8 flags);
static u8 acpi_rs_encode_specific_flags(union acpi_resource_data *resource);
/*******************************************************************************
*
* FUNCTION: acpi_rs_decode_general_flags
*
* PARAMETERS: Resource - Address resource data struct
* Flags - Actual flag byte
*
* RETURN: Decoded flag bits in resource struct
*
* DESCRIPTION: Decode a general flag byte to an address resource struct
*
******************************************************************************/
static void
acpi_rs_decode_general_flags(union acpi_resource_data *resource, u8 flags)
{
ACPI_FUNCTION_ENTRY();
/* Producer / Consumer - flag bit[0] */
resource->address.producer_consumer = (u32) (flags & 0x01);
/* Decode (_DEC) - flag bit[1] */
resource->address.decode = (u32) ((flags >> 1) & 0x01);
/* Min Address Fixed (_MIF) - flag bit[2] */
resource->address.min_address_fixed = (u32) ((flags >> 2) & 0x01);
/* Max Address Fixed (_MAF) - flag bit[3] */
resource->address.max_address_fixed = (u32) ((flags >> 3) & 0x01);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_encode_general_flags
*
* PARAMETERS: Resource - Address resource data struct
*
* RETURN: Encoded general flag byte
*
* DESCRIPTION: Construct a general flag byte from an address resource struct
*
******************************************************************************/
static u8 acpi_rs_encode_general_flags(union acpi_resource_data *resource)
{
u8 flags;
ACPI_FUNCTION_ENTRY();
/* Producer / Consumer - flag bit[0] */
flags = (u8) (resource->address.producer_consumer & 0x01);
/* Decode (_DEC) - flag bit[1] */
flags |= (u8) ((resource->address.decode & 0x01) << 1);
/* Min Address Fixed (_MIF) - flag bit[2] */
flags |= (u8) ((resource->address.min_address_fixed & 0x01) << 2);
/* Max Address Fixed (_MAF) - flag bit[3] */
flags |= (u8) ((resource->address.max_address_fixed & 0x01) << 3);
return (flags);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_decode_specific_flags
*
* PARAMETERS: Resource - Address resource data struct
* Flags - Actual flag byte
*
* RETURN: Decoded flag bits in attribute struct
*
* DESCRIPTION: Decode a type-specific flag byte to an attribute struct.
* Type-specific flags are only defined for the Memory and IO
* resource types.
*
******************************************************************************/
static void
acpi_rs_decode_specific_flags(union acpi_resource_data *resource, u8 flags)
{
ACPI_FUNCTION_ENTRY();
if (resource->address.resource_type == ACPI_MEMORY_RANGE) {
/* Write Status (_RW) - flag bit[0] */
resource->address.attribute.memory.read_write_attribute =
(u16) (flags & 0x01);
/* Memory Attributes (_MEM) - flag bits[2:1] */
resource->address.attribute.memory.cache_attribute =
(u16) ((flags >> 1) & 0x03);
} else if (resource->address.resource_type == ACPI_IO_RANGE) {
/* Ranges (_RNG) - flag bits[1:0] */
resource->address.attribute.io.range_attribute =
(u16) (flags & 0x03);
/* Translations (_TTP and _TRS) - flag bits[5:4] */
resource->address.attribute.io.translation_attribute =
(u16) ((flags >> 4) & 0x03);
}
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_encode_specific_flags
*
* PARAMETERS: Resource - Address resource data struct
*
* RETURN: Encoded type-specific flag byte
*
* DESCRIPTION: Construct a type-specific flag byte from an attribute struct.
* Type-specific flags are only defined for the Memory and IO
* resource types.
*
******************************************************************************/
static u8 acpi_rs_encode_specific_flags(union acpi_resource_data *resource)
{
u8 flags = 0;
ACPI_FUNCTION_ENTRY();
if (resource->address.resource_type == ACPI_MEMORY_RANGE) {
/* Write Status (_RW) - flag bit[0] */
flags = (u8)
(resource->address.attribute.memory.
read_write_attribute & 0x01);
/* Memory Attributes (_MEM) - flag bits[2:1] */
flags |= (u8)
((resource->address.attribute.memory.
cache_attribute & 0x03) << 1);
} else if (resource->address.resource_type == ACPI_IO_RANGE) {
/* Ranges (_RNG) - flag bits[1:0] */
flags = (u8)
(resource->address.attribute.io.range_attribute & 0x03);
/* Translations (_TTP and _TRS) - flag bits[5:4] */
flags |= (u8)
((resource->address.attribute.io.
translation_attribute & 0x03) << 4);
}
return (flags);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_address16_resource
*
* PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
* stream
* bytes_consumed - Pointer to where the number of bytes
* consumed the byte_stream_buffer is
* returned
* output_buffer - Pointer to the return data buffer
* structure_size - Pointer to where the number of bytes
* in the return data struct is returned
*
* RETURN: Status
*
* DESCRIPTION: Take the resource byte stream and fill out the appropriate
* structure pointed to by the output_buffer. Return the
* number of bytes consumed from the byte stream.
*
******************************************************************************/
acpi_status
acpi_rs_address16_resource(u8 * byte_stream_buffer,
acpi_size * bytes_consumed,
u8 ** output_buffer, acpi_size * structure_size)
{
u32 index;
u16 temp16;
u8 temp8;
u8 *temp_ptr;
u8 *buffer = byte_stream_buffer;
struct acpi_resource *output_struct = (void *)*output_buffer;
acpi_size struct_size =
ACPI_SIZEOF_RESOURCE(struct acpi_resource_address16);
ACPI_FUNCTION_TRACE("rs_address16_resource");
/* Get the Descriptor Length field */
buffer += 1;
ACPI_MOVE_16_TO_16(&temp16, buffer);
/* Validate minimum descriptor length */
if (temp16 < 13) {
return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
}
*bytes_consumed = temp16 + 3;
output_struct->id = ACPI_RSTYPE_ADDRESS16;
/* Get the Resource Type (Byte3) */
buffer += 2;
temp8 = *buffer;
/* Values 0-2 and 0xC0-0xFF are valid */
if ((temp8 > 2) && (temp8 < 0xC0)) {
return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE);
}
output_struct->data.address16.resource_type = temp8;
/* Get the General Flags (Byte4) */
buffer += 1;
acpi_rs_decode_general_flags(&output_struct->data, *buffer);
/* Get the Type Specific Flags (Byte5) */
buffer += 1;
acpi_rs_decode_specific_flags(&output_struct->data, *buffer);
/* Get Granularity (Bytes 6-7) */
buffer += 1;
ACPI_MOVE_16_TO_32(&output_struct->data.address16.granularity, buffer);
/* Get min_address_range (Bytes 8-9) */
buffer += 2;
ACPI_MOVE_16_TO_32(&output_struct->data.address16.min_address_range,
buffer);
/* Get max_address_range (Bytes 10-11) */
buffer += 2;
ACPI_MOVE_16_TO_32(&output_struct->data.address16.max_address_range,
buffer);
/* Get address_translation_offset (Bytes 12-13) */
buffer += 2;
ACPI_MOVE_16_TO_32(&output_struct->data.address16.
address_translation_offset, buffer);
/* Get address_length (Bytes 14-15) */
buffer += 2;
ACPI_MOVE_16_TO_32(&output_struct->data.address16.address_length,
buffer);
/* Resource Source Index (if present) */
buffer += 2;
/*
* This will leave us pointing to the Resource Source Index
* If it is present, then save it off and calculate the
* pointer to where the null terminated string goes:
* Each Interrupt takes 32-bits + the 5 bytes of the
* stream that are default.
*
* Note: Some resource descriptors will have an additional null, so
* we add 1 to the length.
*/
if (*bytes_consumed > (16 + 1)) {
/* Dereference the Index */
output_struct->data.address16.resource_source.index =
(u32) * buffer;
/* Point to the String */
buffer += 1;
/* Point the String pointer to the end of this structure */
output_struct->data.address16.resource_source.string_ptr =
(char *)((u8 *) output_struct + struct_size);
temp_ptr = (u8 *)
output_struct->data.address16.resource_source.string_ptr;
/* Copy the resource_source string into the buffer */
index = 0;
while (*buffer) {
*temp_ptr = *buffer;
temp_ptr++;
buffer++;
index++;
}
/* Add the terminating null and set the string length */
*temp_ptr = 0;
output_struct->data.address16.resource_source.string_length =
index + 1;
/*
* In order for the struct_size to fall on a 32-bit boundary,
* calculate the length of the string and expand the
* struct_size to the next 32-bit boundary.
*/
temp8 = (u8) (index + 1);
struct_size += ACPI_ROUND_UP_to_32_bITS(temp8);
} else {
output_struct->data.address16.resource_source.index = 0;
output_struct->data.address16.resource_source.string_length = 0;
output_struct->data.address16.resource_source.string_ptr = NULL;
}
/* Set the Length parameter */
output_struct->length = (u32) struct_size;
/* Return the final size of the structure */
*structure_size = struct_size;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_address16_stream
*
* PARAMETERS: linked_list - Pointer to the resource linked list
* output_buffer - Pointer to the user's return buffer
* bytes_consumed - Pointer to where the number of bytes
* used in the output_buffer is returned
*
* RETURN: Status
*
* DESCRIPTION: Take the linked list resource structure and fills in the
* the appropriate bytes in a byte stream
*
******************************************************************************/
acpi_status
acpi_rs_address16_stream(struct acpi_resource *linked_list,
u8 ** output_buffer, acpi_size * bytes_consumed)
{
u8 *buffer = *output_buffer;
u8 *length_field;
acpi_size actual_bytes;
ACPI_FUNCTION_TRACE("rs_address16_stream");
/* Set the Descriptor Type field */
*buffer = ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE;
buffer += 1;
/* Save a pointer to the Length field - to be filled in later */
length_field = buffer;
buffer += 2;
/* Set the Resource Type (Memory, Io, bus_number) */
*buffer = (u8) (linked_list->data.address16.resource_type & 0x03);
buffer += 1;
/* Set the general flags */
*buffer = acpi_rs_encode_general_flags(&linked_list->data);
buffer += 1;
/* Set the type specific flags */
*buffer = acpi_rs_encode_specific_flags(&linked_list->data);
buffer += 1;
/* Set the address space granularity */
ACPI_MOVE_32_TO_16(buffer, &linked_list->data.address16.granularity);
buffer += 2;
/* Set the address range minimum */
ACPI_MOVE_32_TO_16(buffer,
&linked_list->data.address16.min_address_range);
buffer += 2;
/* Set the address range maximum */
ACPI_MOVE_32_TO_16(buffer,
&linked_list->data.address16.max_address_range);
buffer += 2;
/* Set the address translation offset */
ACPI_MOVE_32_TO_16(buffer,
&linked_list->data.address16.
address_translation_offset);
buffer += 2;
/* Set the address length */
ACPI_MOVE_32_TO_16(buffer, &linked_list->data.address16.address_length);
buffer += 2;
/* Resource Source Index and Resource Source are optional */
if (linked_list->data.address16.resource_source.string_length) {
*buffer =
(u8) linked_list->data.address16.resource_source.index;
buffer += 1;
/* Copy the resource_source string */
ACPI_STRCPY((char *)buffer,
linked_list->data.address16.resource_source.
string_ptr);
/*
* Buffer needs to be set to the length of the string + one for the
* terminating null
*/
buffer +=
(acpi_size) (ACPI_STRLEN
(linked_list->data.address16.resource_source.
string_ptr) + 1);
}
/* Return the number of bytes consumed in this operation */
actual_bytes = ACPI_PTR_DIFF(buffer, *output_buffer);
*bytes_consumed = actual_bytes;
/*
* Set the length field to the number of bytes consumed
* minus the header size (3 bytes)
*/
actual_bytes -= 3;
ACPI_MOVE_SIZE_TO_16(length_field, &actual_bytes);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_address32_resource
*
* PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
* stream
* bytes_consumed - Pointer to where the number of bytes
* consumed the byte_stream_buffer is
* returned
* output_buffer - Pointer to the return data buffer
* structure_size - Pointer to where the number of bytes
* in the return data struct is returned
*
* RETURN: Status
*
* DESCRIPTION: Take the resource byte stream and fill out the appropriate
* structure pointed to by the output_buffer. Return the
* number of bytes consumed from the byte stream.
*
******************************************************************************/
acpi_status
acpi_rs_address32_resource(u8 * byte_stream_buffer,
acpi_size * bytes_consumed,
u8 ** output_buffer, acpi_size * structure_size)
{
u16 temp16;
u8 temp8;
u8 *temp_ptr;
u32 index;
u8 *buffer = byte_stream_buffer;
struct acpi_resource *output_struct = (void *)*output_buffer;
acpi_size struct_size =
ACPI_SIZEOF_RESOURCE(struct acpi_resource_address32);
ACPI_FUNCTION_TRACE("rs_address32_resource");
/* Get the Descriptor Length field */
buffer += 1;
ACPI_MOVE_16_TO_16(&temp16, buffer);
/* Validate minimum descriptor length */
if (temp16 < 23) {
return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
}
*bytes_consumed = temp16 + 3;
output_struct->id = ACPI_RSTYPE_ADDRESS32;
/* Get the Resource Type (Byte3) */
buffer += 2;
temp8 = *buffer;
/* Values 0-2 and 0xC0-0xFF are valid */
if ((temp8 > 2) && (temp8 < 0xC0)) {
return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE);
}
output_struct->data.address32.resource_type = temp8;
/* Get the General Flags (Byte4) */
buffer += 1;
acpi_rs_decode_general_flags(&output_struct->data, *buffer);
/* Get the Type Specific Flags (Byte5) */
buffer += 1;
acpi_rs_decode_specific_flags(&output_struct->data, *buffer);
/* Get Granularity (Bytes 6-9) */
buffer += 1;
ACPI_MOVE_32_TO_32(&output_struct->data.address32.granularity, buffer);
/* Get min_address_range (Bytes 10-13) */
buffer += 4;
ACPI_MOVE_32_TO_32(&output_struct->data.address32.min_address_range,
buffer);
/* Get max_address_range (Bytes 14-17) */
buffer += 4;
ACPI_MOVE_32_TO_32(&output_struct->data.address32.max_address_range,
buffer);
/* Get address_translation_offset (Bytes 18-21) */
buffer += 4;
ACPI_MOVE_32_TO_32(&output_struct->data.address32.
address_translation_offset, buffer);
/* Get address_length (Bytes 22-25) */
buffer += 4;
ACPI_MOVE_32_TO_32(&output_struct->data.address32.address_length,
buffer);
/* Resource Source Index (if present) */
buffer += 4;
/*
* This will leave us pointing to the Resource Source Index
* If it is present, then save it off and calculate the
* pointer to where the null terminated string goes:
*
* Note: Some resource descriptors will have an additional null, so
* we add 1 to the length.
*/
if (*bytes_consumed > (26 + 1)) {
/* Dereference the Index */
output_struct->data.address32.resource_source.index =
(u32) * buffer;
/* Point to the String */
buffer += 1;
/* Point the String pointer to the end of this structure */
output_struct->data.address32.resource_source.string_ptr =
(char *)((u8 *) output_struct + struct_size);
temp_ptr = (u8 *)
output_struct->data.address32.resource_source.string_ptr;
/* Copy the resource_source string into the buffer */
index = 0;
while (*buffer) {
*temp_ptr = *buffer;
temp_ptr++;
buffer++;
index++;
}
/* Add the terminating null and set the string length */
*temp_ptr = 0;
output_struct->data.address32.resource_source.string_length =
index + 1;
/*
* In order for the struct_size to fall on a 32-bit boundary,
* calculate the length of the string and expand the
* struct_size to the next 32-bit boundary.
*/
temp8 = (u8) (index + 1);
struct_size += ACPI_ROUND_UP_to_32_bITS(temp8);
} else {
output_struct->data.address32.resource_source.index = 0;
output_struct->data.address32.resource_source.string_length = 0;
output_struct->data.address32.resource_source.string_ptr = NULL;
}
/* Set the Length parameter */
output_struct->length = (u32) struct_size;
/* Return the final size of the structure */
*structure_size = struct_size;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_address32_stream
*
* PARAMETERS: linked_list - Pointer to the resource linked list
* output_buffer - Pointer to the user's return buffer
* bytes_consumed - Pointer to where the number of bytes
* used in the output_buffer is returned
*
* RETURN: Status
*
* DESCRIPTION: Take the linked list resource structure and fills in the
* the appropriate bytes in a byte stream
*
******************************************************************************/
acpi_status
acpi_rs_address32_stream(struct acpi_resource *linked_list,
u8 ** output_buffer, acpi_size * bytes_consumed)
{
u8 *buffer;
u16 *length_field;
ACPI_FUNCTION_TRACE("rs_address32_stream");
buffer = *output_buffer;
/* Set the Descriptor Type field */
*buffer = ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE;
buffer += 1;
/* Save a pointer to the Length field - to be filled in later */
length_field = ACPI_CAST_PTR(u16, buffer);
buffer += 2;
/* Set the Resource Type (Memory, Io, bus_number) */
*buffer = (u8) (linked_list->data.address32.resource_type & 0x03);
buffer += 1;
/* Set the general flags */
*buffer = acpi_rs_encode_general_flags(&linked_list->data);
buffer += 1;
/* Set the type specific flags */
*buffer = acpi_rs_encode_specific_flags(&linked_list->data);
buffer += 1;
/* Set the address space granularity */
ACPI_MOVE_32_TO_32(buffer, &linked_list->data.address32.granularity);
buffer += 4;
/* Set the address range minimum */
ACPI_MOVE_32_TO_32(buffer,
&linked_list->data.address32.min_address_range);
buffer += 4;
/* Set the address range maximum */
ACPI_MOVE_32_TO_32(buffer,
&linked_list->data.address32.max_address_range);
buffer += 4;
/* Set the address translation offset */
ACPI_MOVE_32_TO_32(buffer,
&linked_list->data.address32.
address_translation_offset);
buffer += 4;
/* Set the address length */
ACPI_MOVE_32_TO_32(buffer, &linked_list->data.address32.address_length);
buffer += 4;
/* Resource Source Index and Resource Source are optional */
if (linked_list->data.address32.resource_source.string_length) {
*buffer =
(u8) linked_list->data.address32.resource_source.index;
buffer += 1;
/* Copy the resource_source string */
ACPI_STRCPY((char *)buffer,
linked_list->data.address32.resource_source.
string_ptr);
/*
* Buffer needs to be set to the length of the string + one for the
* terminating null
*/
buffer +=
(acpi_size) (ACPI_STRLEN
(linked_list->data.address32.resource_source.
string_ptr) + 1);
}
/* Return the number of bytes consumed in this operation */
*bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer);
/*
* Set the length field to the number of bytes consumed
* minus the header size (3 bytes)
*/
*length_field = (u16) (*bytes_consumed - 3);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_address64_resource
*
* PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
* stream
* bytes_consumed - Pointer to where the number of bytes
* consumed the byte_stream_buffer is
* returned
* output_buffer - Pointer to the return data buffer
* structure_size - Pointer to where the number of bytes
* in the return data struct is returned
*
* RETURN: Status
*
* DESCRIPTION: Take the resource byte stream and fill out the appropriate
* structure pointed to by the output_buffer. Return the
* number of bytes consumed from the byte stream.
*
******************************************************************************/
acpi_status
acpi_rs_address64_resource(u8 * byte_stream_buffer,
acpi_size * bytes_consumed,
u8 ** output_buffer, acpi_size * structure_size)
{
u16 temp16;
u8 temp8;
u8 resource_type;
u8 *temp_ptr;
u32 index;
u8 *buffer = byte_stream_buffer;
struct acpi_resource *output_struct = (void *)*output_buffer;
acpi_size struct_size =
ACPI_SIZEOF_RESOURCE(struct acpi_resource_address64);
ACPI_FUNCTION_TRACE("rs_address64_resource");
/* Get the Descriptor Type */
resource_type = *buffer;
/* Get the Descriptor Length field */
buffer += 1;
ACPI_MOVE_16_TO_16(&temp16, buffer);
/* Validate minimum descriptor length */
if (temp16 < 43) {
return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
}
*bytes_consumed = temp16 + 3;
output_struct->id = ACPI_RSTYPE_ADDRESS64;
/* Get the Resource Type (Byte3) */
buffer += 2;
temp8 = *buffer;
/* Values 0-2 and 0xC0-0xFF are valid */
if ((temp8 > 2) && (temp8 < 0xC0)) {
return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE);
}
output_struct->data.address64.resource_type = temp8;
/* Get the General Flags (Byte4) */
buffer += 1;
acpi_rs_decode_general_flags(&output_struct->data, *buffer);
/* Get the Type Specific Flags (Byte5) */
buffer += 1;
acpi_rs_decode_specific_flags(&output_struct->data, *buffer);
if (resource_type == ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE) {
/* Move past revision_id and Reserved byte */
buffer += 2;
}
/* Get Granularity (Bytes 6-13) or (Bytes 8-15) */
buffer += 1;
ACPI_MOVE_64_TO_64(&output_struct->data.address64.granularity, buffer);
/* Get min_address_range (Bytes 14-21) or (Bytes 16-23) */
buffer += 8;
ACPI_MOVE_64_TO_64(&output_struct->data.address64.min_address_range,
buffer);
/* Get max_address_range (Bytes 22-29) or (Bytes 24-31) */
buffer += 8;
ACPI_MOVE_64_TO_64(&output_struct->data.address64.max_address_range,
buffer);
/* Get address_translation_offset (Bytes 30-37) or (Bytes 32-39) */
buffer += 8;
ACPI_MOVE_64_TO_64(&output_struct->data.address64.
address_translation_offset, buffer);
/* Get address_length (Bytes 38-45) or (Bytes 40-47) */
buffer += 8;
ACPI_MOVE_64_TO_64(&output_struct->data.address64.address_length,
buffer);
output_struct->data.address64.resource_source.index = 0;
output_struct->data.address64.resource_source.string_length = 0;
output_struct->data.address64.resource_source.string_ptr = NULL;
if (resource_type == ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE) {
/* Get type_specific_attribute (Bytes 48-55) */
buffer += 8;
ACPI_MOVE_64_TO_64(&output_struct->data.address64.
type_specific_attributes, buffer);
} else {
output_struct->data.address64.type_specific_attributes = 0;
/* Resource Source Index (if present) */
buffer += 8;
/*
* This will leave us pointing to the Resource Source Index
* If it is present, then save it off and calculate the
* pointer to where the null terminated string goes:
* Each Interrupt takes 32-bits + the 5 bytes of the
* stream that are default.
*
* Note: Some resource descriptors will have an additional null, so
* we add 1 to the length.
*/
if (*bytes_consumed > (46 + 1)) {
/* Dereference the Index */
output_struct->data.address64.resource_source.index =
(u32) * buffer;
/* Point to the String */
buffer += 1;
/* Point the String pointer to the end of this structure */
output_struct->data.address64.resource_source.
string_ptr =
(char *)((u8 *) output_struct + struct_size);
temp_ptr = (u8 *)
output_struct->data.address64.resource_source.
string_ptr;
/* Copy the resource_source string into the buffer */
index = 0;
while (*buffer) {
*temp_ptr = *buffer;
temp_ptr++;
buffer++;
index++;
}
/*
* Add the terminating null and set the string length
*/
*temp_ptr = 0;
output_struct->data.address64.resource_source.
string_length = index + 1;
/*
* In order for the struct_size to fall on a 32-bit boundary,
* calculate the length of the string and expand the
* struct_size to the next 32-bit boundary.
*/
temp8 = (u8) (index + 1);
struct_size += ACPI_ROUND_UP_to_32_bITS(temp8);
}
}
/* Set the Length parameter */
output_struct->length = (u32) struct_size;
/* Return the final size of the structure */
*structure_size = struct_size;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_address64_stream
*
* PARAMETERS: linked_list - Pointer to the resource linked list
* output_buffer - Pointer to the user's return buffer
* bytes_consumed - Pointer to where the number of bytes
* used in the output_buffer is returned
*
* RETURN: Status
*
* DESCRIPTION: Take the linked list resource structure and fills in the
* the appropriate bytes in a byte stream
*
******************************************************************************/
acpi_status
acpi_rs_address64_stream(struct acpi_resource *linked_list,
u8 ** output_buffer, acpi_size * bytes_consumed)
{
u8 *buffer;
u16 *length_field;
ACPI_FUNCTION_TRACE("rs_address64_stream");
buffer = *output_buffer;
/* Set the Descriptor Type field */
*buffer = ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE;
buffer += 1;
/* Save a pointer to the Length field - to be filled in later */
length_field = ACPI_CAST_PTR(u16, buffer);
buffer += 2;
/* Set the Resource Type (Memory, Io, bus_number) */
*buffer = (u8) (linked_list->data.address64.resource_type & 0x03);
buffer += 1;
/* Set the general flags */
*buffer = acpi_rs_encode_general_flags(&linked_list->data);
buffer += 1;
/* Set the type specific flags */
*buffer = acpi_rs_encode_specific_flags(&linked_list->data);
buffer += 1;
/* Set the address space granularity */
ACPI_MOVE_64_TO_64(buffer, &linked_list->data.address64.granularity);
buffer += 8;
/* Set the address range minimum */
ACPI_MOVE_64_TO_64(buffer,
&linked_list->data.address64.min_address_range);
buffer += 8;
/* Set the address range maximum */
ACPI_MOVE_64_TO_64(buffer,
&linked_list->data.address64.max_address_range);
buffer += 8;
/* Set the address translation offset */
ACPI_MOVE_64_TO_64(buffer,
&linked_list->data.address64.
address_translation_offset);
buffer += 8;
/* Set the address length */
ACPI_MOVE_64_TO_64(buffer, &linked_list->data.address64.address_length);
buffer += 8;
/* Resource Source Index and Resource Source are optional */
if (linked_list->data.address64.resource_source.string_length) {
*buffer =
(u8) linked_list->data.address64.resource_source.index;
buffer += 1;
/* Copy the resource_source string */
ACPI_STRCPY((char *)buffer,
linked_list->data.address64.resource_source.
string_ptr);
/*
* Buffer needs to be set to the length of the string + one for the
* terminating null
*/
buffer +=
(acpi_size) (ACPI_STRLEN
(linked_list->data.address64.resource_source.
string_ptr) + 1);
}
/* Return the number of bytes consumed in this operation */
*bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer);
/*
* Set the length field to the number of bytes consumed
* minus the header size (3 bytes)
*/
*length_field = (u16) (*bytes_consumed - 3);
return_ACPI_STATUS(AE_OK);
}
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