mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-11 16:36:49 +07:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
842 lines
22 KiB
C
842 lines
22 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: rscalc - Calculate stream and list lengths
|
|
*
|
|
******************************************************************************/
|
|
|
|
/*
|
|
* 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>
|
|
#include <acpi/amlcode.h>
|
|
#include <acpi/acnamesp.h>
|
|
|
|
#define _COMPONENT ACPI_RESOURCES
|
|
ACPI_MODULE_NAME ("rscalc")
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_rs_get_byte_stream_length
|
|
*
|
|
* PARAMETERS: linked_list - Pointer to the resource linked list
|
|
* size_needed - u32 pointer of the size buffer needed
|
|
* to properly return the parsed data
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Takes the resource byte stream and parses it once, calculating
|
|
* the size buffer needed to hold the linked list that conveys
|
|
* the resource data.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_rs_get_byte_stream_length (
|
|
struct acpi_resource *linked_list,
|
|
acpi_size *size_needed)
|
|
{
|
|
acpi_size byte_stream_size_needed = 0;
|
|
acpi_size segment_size;
|
|
u8 done = FALSE;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("rs_get_byte_stream_length");
|
|
|
|
|
|
while (!done) {
|
|
/*
|
|
* Init the variable that will hold the size to add to the total.
|
|
*/
|
|
segment_size = 0;
|
|
|
|
switch (linked_list->id) {
|
|
case ACPI_RSTYPE_IRQ:
|
|
/*
|
|
* IRQ Resource
|
|
* For an IRQ Resource, Byte 3, although optional, will always be
|
|
* created - it holds IRQ information.
|
|
*/
|
|
segment_size = 4;
|
|
break;
|
|
|
|
case ACPI_RSTYPE_DMA:
|
|
/*
|
|
* DMA Resource
|
|
* For this resource the size is static
|
|
*/
|
|
segment_size = 3;
|
|
break;
|
|
|
|
case ACPI_RSTYPE_START_DPF:
|
|
/*
|
|
* Start Dependent Functions Resource
|
|
* For a start_dependent_functions Resource, Byte 1, although
|
|
* optional, will always be created.
|
|
*/
|
|
segment_size = 2;
|
|
break;
|
|
|
|
case ACPI_RSTYPE_END_DPF:
|
|
/*
|
|
* End Dependent Functions Resource
|
|
* For this resource the size is static
|
|
*/
|
|
segment_size = 1;
|
|
break;
|
|
|
|
case ACPI_RSTYPE_IO:
|
|
/*
|
|
* IO Port Resource
|
|
* For this resource the size is static
|
|
*/
|
|
segment_size = 8;
|
|
break;
|
|
|
|
case ACPI_RSTYPE_FIXED_IO:
|
|
/*
|
|
* Fixed IO Port Resource
|
|
* For this resource the size is static
|
|
*/
|
|
segment_size = 4;
|
|
break;
|
|
|
|
case ACPI_RSTYPE_VENDOR:
|
|
/*
|
|
* Vendor Defined Resource
|
|
* For a Vendor Specific resource, if the Length is between 1 and 7
|
|
* it will be created as a Small Resource data type, otherwise it
|
|
* is a Large Resource data type.
|
|
*/
|
|
if (linked_list->data.vendor_specific.length > 7) {
|
|
segment_size = 3;
|
|
}
|
|
else {
|
|
segment_size = 1;
|
|
}
|
|
segment_size += linked_list->data.vendor_specific.length;
|
|
break;
|
|
|
|
case ACPI_RSTYPE_END_TAG:
|
|
/*
|
|
* End Tag
|
|
* For this resource the size is static
|
|
*/
|
|
segment_size = 2;
|
|
done = TRUE;
|
|
break;
|
|
|
|
case ACPI_RSTYPE_MEM24:
|
|
/*
|
|
* 24-Bit Memory Resource
|
|
* For this resource the size is static
|
|
*/
|
|
segment_size = 12;
|
|
break;
|
|
|
|
case ACPI_RSTYPE_MEM32:
|
|
/*
|
|
* 32-Bit Memory Range Resource
|
|
* For this resource the size is static
|
|
*/
|
|
segment_size = 20;
|
|
break;
|
|
|
|
case ACPI_RSTYPE_FIXED_MEM32:
|
|
/*
|
|
* 32-Bit Fixed Memory Resource
|
|
* For this resource the size is static
|
|
*/
|
|
segment_size = 12;
|
|
break;
|
|
|
|
case ACPI_RSTYPE_ADDRESS16:
|
|
/*
|
|
* 16-Bit Address Resource
|
|
* The base size of this byte stream is 16. If a Resource Source
|
|
* string is not NULL, add 1 for the Index + the length of the null
|
|
* terminated string Resource Source + 1 for the null.
|
|
*/
|
|
segment_size = 16;
|
|
|
|
if (linked_list->data.address16.resource_source.string_ptr) {
|
|
segment_size += linked_list->data.address16.resource_source.string_length;
|
|
segment_size++;
|
|
}
|
|
break;
|
|
|
|
case ACPI_RSTYPE_ADDRESS32:
|
|
/*
|
|
* 32-Bit Address Resource
|
|
* The base size of this byte stream is 26. If a Resource
|
|
* Source string is not NULL, add 1 for the Index + the
|
|
* length of the null terminated string Resource Source +
|
|
* 1 for the null.
|
|
*/
|
|
segment_size = 26;
|
|
|
|
if (linked_list->data.address32.resource_source.string_ptr) {
|
|
segment_size += linked_list->data.address32.resource_source.string_length;
|
|
segment_size++;
|
|
}
|
|
break;
|
|
|
|
case ACPI_RSTYPE_ADDRESS64:
|
|
/*
|
|
* 64-Bit Address Resource
|
|
* The base size of this byte stream is 46. If a resource_source
|
|
* string is not NULL, add 1 for the Index + the length of the null
|
|
* terminated string Resource Source + 1 for the null.
|
|
*/
|
|
segment_size = 46;
|
|
|
|
if (linked_list->data.address64.resource_source.string_ptr) {
|
|
segment_size += linked_list->data.address64.resource_source.string_length;
|
|
segment_size++;
|
|
}
|
|
break;
|
|
|
|
case ACPI_RSTYPE_EXT_IRQ:
|
|
/*
|
|
* Extended IRQ Resource
|
|
* The base size of this byte stream is 9. This is for an Interrupt
|
|
* table length of 1. For each additional interrupt, add 4.
|
|
* If a Resource Source string is not NULL, add 1 for the
|
|
* Index + the length of the null terminated string
|
|
* Resource Source + 1 for the null.
|
|
*/
|
|
segment_size = 9 +
|
|
(((acpi_size) linked_list->data.extended_irq.number_of_interrupts - 1) * 4);
|
|
|
|
if (linked_list->data.extended_irq.resource_source.string_ptr) {
|
|
segment_size += linked_list->data.extended_irq.resource_source.string_length;
|
|
segment_size++;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
/*
|
|
* If we get here, everything is out of sync, exit with error
|
|
*/
|
|
return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE);
|
|
|
|
} /* switch (linked_list->Id) */
|
|
|
|
/*
|
|
* Update the total
|
|
*/
|
|
byte_stream_size_needed += segment_size;
|
|
|
|
/*
|
|
* Point to the next object
|
|
*/
|
|
linked_list = ACPI_PTR_ADD (struct acpi_resource,
|
|
linked_list, linked_list->length);
|
|
}
|
|
|
|
/*
|
|
* This is the data the caller needs
|
|
*/
|
|
*size_needed = byte_stream_size_needed;
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_rs_get_list_length
|
|
*
|
|
* PARAMETERS: byte_stream_buffer - Pointer to the resource byte stream
|
|
* byte_stream_buffer_length - Size of byte_stream_buffer
|
|
* size_needed - u32 pointer of the size buffer
|
|
* needed to properly return the
|
|
* parsed data
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Takes the resource byte stream and parses it once, calculating
|
|
* the size buffer needed to hold the linked list that conveys
|
|
* the resource data.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_rs_get_list_length (
|
|
u8 *byte_stream_buffer,
|
|
u32 byte_stream_buffer_length,
|
|
acpi_size *size_needed)
|
|
{
|
|
u32 buffer_size = 0;
|
|
u32 bytes_parsed = 0;
|
|
u8 number_of_interrupts = 0;
|
|
u8 number_of_channels = 0;
|
|
u8 resource_type;
|
|
u32 structure_size;
|
|
u32 bytes_consumed;
|
|
u8 *buffer;
|
|
u8 temp8;
|
|
u16 temp16;
|
|
u8 index;
|
|
u8 additional_bytes;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("rs_get_list_length");
|
|
|
|
|
|
while (bytes_parsed < byte_stream_buffer_length) {
|
|
/*
|
|
* The next byte in the stream is the resource type
|
|
*/
|
|
resource_type = acpi_rs_get_resource_type (*byte_stream_buffer);
|
|
|
|
switch (resource_type) {
|
|
case ACPI_RDESC_TYPE_MEMORY_24:
|
|
/*
|
|
* 24-Bit Memory Resource
|
|
*/
|
|
bytes_consumed = 12;
|
|
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_mem24);
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_LARGE_VENDOR:
|
|
/*
|
|
* Vendor Defined Resource
|
|
*/
|
|
buffer = byte_stream_buffer;
|
|
++buffer;
|
|
|
|
ACPI_MOVE_16_TO_16 (&temp16, buffer);
|
|
bytes_consumed = temp16 + 3;
|
|
|
|
/*
|
|
* Ensure a 32-bit boundary for the structure
|
|
*/
|
|
temp16 = (u16) ACPI_ROUND_UP_to_32_bITS (temp16);
|
|
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_vendor) +
|
|
(temp16 * sizeof (u8));
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_MEMORY_32:
|
|
/*
|
|
* 32-Bit Memory Range Resource
|
|
*/
|
|
bytes_consumed = 20;
|
|
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_mem32);
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_FIXED_MEMORY_32:
|
|
/*
|
|
* 32-Bit Fixed Memory Resource
|
|
*/
|
|
bytes_consumed = 12;
|
|
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_fixed_mem32);
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE:
|
|
/*
|
|
* 64-Bit Address Resource
|
|
*/
|
|
buffer = byte_stream_buffer;
|
|
|
|
++buffer;
|
|
ACPI_MOVE_16_TO_16 (&temp16, buffer);
|
|
|
|
bytes_consumed = temp16 + 3;
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address64);
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE:
|
|
/*
|
|
* 64-Bit Address Resource
|
|
*/
|
|
buffer = byte_stream_buffer;
|
|
|
|
++buffer;
|
|
ACPI_MOVE_16_TO_16 (&temp16, buffer);
|
|
|
|
bytes_consumed = temp16 + 3;
|
|
|
|
/*
|
|
* Resource Source Index and Resource Source are optional elements.
|
|
* Check the length of the Bytestream. If it is greater than 43,
|
|
* that means that an Index exists and is followed by a null
|
|
* terminated string. Therefore, set the temp variable to the
|
|
* length minus the minimum byte stream length plus the byte for
|
|
* the Index to determine the size of the NULL terminated string.
|
|
*/
|
|
if (43 < temp16) {
|
|
temp8 = (u8) (temp16 - 44);
|
|
}
|
|
else {
|
|
temp8 = 0;
|
|
}
|
|
|
|
/*
|
|
* Ensure a 64-bit boundary for the structure
|
|
*/
|
|
temp8 = (u8) ACPI_ROUND_UP_to_64_bITS (temp8);
|
|
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address64) +
|
|
(temp8 * sizeof (u8));
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE:
|
|
/*
|
|
* 32-Bit Address Resource
|
|
*/
|
|
buffer = byte_stream_buffer;
|
|
|
|
++buffer;
|
|
ACPI_MOVE_16_TO_16 (&temp16, buffer);
|
|
|
|
bytes_consumed = temp16 + 3;
|
|
|
|
/*
|
|
* Resource Source Index and Resource Source are optional elements.
|
|
* Check the length of the Bytestream. If it is greater than 23,
|
|
* that means that an Index exists and is followed by a null
|
|
* terminated string. Therefore, set the temp variable to the
|
|
* length minus the minimum byte stream length plus the byte for
|
|
* the Index to determine the size of the NULL terminated string.
|
|
*/
|
|
if (23 < temp16) {
|
|
temp8 = (u8) (temp16 - 24);
|
|
}
|
|
else {
|
|
temp8 = 0;
|
|
}
|
|
|
|
/*
|
|
* Ensure a 32-bit boundary for the structure
|
|
*/
|
|
temp8 = (u8) ACPI_ROUND_UP_to_32_bITS (temp8);
|
|
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address32) +
|
|
(temp8 * sizeof (u8));
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE:
|
|
/*
|
|
* 16-Bit Address Resource
|
|
*/
|
|
buffer = byte_stream_buffer;
|
|
|
|
++buffer;
|
|
ACPI_MOVE_16_TO_16 (&temp16, buffer);
|
|
|
|
bytes_consumed = temp16 + 3;
|
|
|
|
/*
|
|
* Resource Source Index and Resource Source are optional elements.
|
|
* Check the length of the Bytestream. If it is greater than 13,
|
|
* that means that an Index exists and is followed by a null
|
|
* terminated string. Therefore, set the temp variable to the
|
|
* length minus the minimum byte stream length plus the byte for
|
|
* the Index to determine the size of the NULL terminated string.
|
|
*/
|
|
if (13 < temp16) {
|
|
temp8 = (u8) (temp16 - 14);
|
|
}
|
|
else {
|
|
temp8 = 0;
|
|
}
|
|
|
|
/*
|
|
* Ensure a 32-bit boundary for the structure
|
|
*/
|
|
temp8 = (u8) ACPI_ROUND_UP_to_32_bITS (temp8);
|
|
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address16) +
|
|
(temp8 * sizeof (u8));
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_EXTENDED_XRUPT:
|
|
/*
|
|
* Extended IRQ
|
|
*/
|
|
buffer = byte_stream_buffer;
|
|
|
|
++buffer;
|
|
ACPI_MOVE_16_TO_16 (&temp16, buffer);
|
|
|
|
bytes_consumed = temp16 + 3;
|
|
|
|
/*
|
|
* Point past the length field and the Interrupt vector flags to
|
|
* save off the Interrupt table length to the Temp8 variable.
|
|
*/
|
|
buffer += 3;
|
|
temp8 = *buffer;
|
|
|
|
/*
|
|
* To compensate for multiple interrupt numbers, add 4 bytes for
|
|
* each additional interrupts greater than 1
|
|
*/
|
|
additional_bytes = (u8) ((temp8 - 1) * 4);
|
|
|
|
/*
|
|
* Resource Source Index and Resource Source are optional elements.
|
|
* Check the length of the Bytestream. If it is greater than 9,
|
|
* that means that an Index exists and is followed by a null
|
|
* terminated string. Therefore, set the temp variable to the
|
|
* length minus the minimum byte stream length plus the byte for
|
|
* the Index to determine the size of the NULL terminated string.
|
|
*/
|
|
if (9 + additional_bytes < temp16) {
|
|
temp8 = (u8) (temp16 - (9 + additional_bytes));
|
|
}
|
|
else {
|
|
temp8 = 0;
|
|
}
|
|
|
|
/*
|
|
* Ensure a 32-bit boundary for the structure
|
|
*/
|
|
temp8 = (u8) ACPI_ROUND_UP_to_32_bITS (temp8);
|
|
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_ext_irq) +
|
|
(additional_bytes * sizeof (u8)) +
|
|
(temp8 * sizeof (u8));
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_IRQ_FORMAT:
|
|
/*
|
|
* IRQ Resource.
|
|
* Determine if it there are two or three trailing bytes
|
|
*/
|
|
buffer = byte_stream_buffer;
|
|
temp8 = *buffer;
|
|
|
|
if(temp8 & 0x01) {
|
|
bytes_consumed = 4;
|
|
}
|
|
else {
|
|
bytes_consumed = 3;
|
|
}
|
|
|
|
/* Point past the descriptor */
|
|
|
|
++buffer;
|
|
|
|
/*
|
|
* Look at the number of bits set
|
|
*/
|
|
ACPI_MOVE_16_TO_16 (&temp16, buffer);
|
|
|
|
for (index = 0; index < 16; index++) {
|
|
if (temp16 & 0x1) {
|
|
++number_of_interrupts;
|
|
}
|
|
|
|
temp16 >>= 1;
|
|
}
|
|
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_io) +
|
|
(number_of_interrupts * sizeof (u32));
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_DMA_FORMAT:
|
|
/*
|
|
* DMA Resource
|
|
*/
|
|
buffer = byte_stream_buffer;
|
|
bytes_consumed = 3;
|
|
|
|
/* Point past the descriptor */
|
|
|
|
++buffer;
|
|
|
|
/*
|
|
* Look at the number of bits set
|
|
*/
|
|
temp8 = *buffer;
|
|
|
|
for(index = 0; index < 8; index++) {
|
|
if(temp8 & 0x1) {
|
|
++number_of_channels;
|
|
}
|
|
|
|
temp8 >>= 1;
|
|
}
|
|
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_dma) +
|
|
(number_of_channels * sizeof (u32));
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_START_DEPENDENT:
|
|
/*
|
|
* Start Dependent Functions Resource
|
|
* Determine if it there are two or three trailing bytes
|
|
*/
|
|
buffer = byte_stream_buffer;
|
|
temp8 = *buffer;
|
|
|
|
if(temp8 & 0x01) {
|
|
bytes_consumed = 2;
|
|
}
|
|
else {
|
|
bytes_consumed = 1;
|
|
}
|
|
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_start_dpf);
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_END_DEPENDENT:
|
|
/*
|
|
* End Dependent Functions Resource
|
|
*/
|
|
bytes_consumed = 1;
|
|
structure_size = ACPI_RESOURCE_LENGTH;
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_IO_PORT:
|
|
/*
|
|
* IO Port Resource
|
|
*/
|
|
bytes_consumed = 8;
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_io);
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_FIXED_IO_PORT:
|
|
/*
|
|
* Fixed IO Port Resource
|
|
*/
|
|
bytes_consumed = 4;
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_fixed_io);
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_SMALL_VENDOR:
|
|
/*
|
|
* Vendor Specific Resource
|
|
*/
|
|
buffer = byte_stream_buffer;
|
|
|
|
temp8 = *buffer;
|
|
temp8 = (u8) (temp8 & 0x7);
|
|
bytes_consumed = temp8 + 1;
|
|
|
|
/*
|
|
* Ensure a 32-bit boundary for the structure
|
|
*/
|
|
temp8 = (u8) ACPI_ROUND_UP_to_32_bITS (temp8);
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_vendor) +
|
|
(temp8 * sizeof (u8));
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_END_TAG:
|
|
/*
|
|
* End Tag
|
|
*/
|
|
bytes_consumed = 2;
|
|
structure_size = ACPI_RESOURCE_LENGTH;
|
|
byte_stream_buffer_length = bytes_parsed;
|
|
break;
|
|
|
|
|
|
default:
|
|
/*
|
|
* If we get here, everything is out of sync,
|
|
* exit with an error
|
|
*/
|
|
return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE);
|
|
}
|
|
|
|
/*
|
|
* Update the return value and counter
|
|
*/
|
|
buffer_size += (u32) ACPI_ALIGN_RESOURCE_SIZE (structure_size);
|
|
bytes_parsed += bytes_consumed;
|
|
|
|
/*
|
|
* Set the byte stream to point to the next resource
|
|
*/
|
|
byte_stream_buffer += bytes_consumed;
|
|
}
|
|
|
|
/*
|
|
* This is the data the caller needs
|
|
*/
|
|
*size_needed = buffer_size;
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_rs_get_pci_routing_table_length
|
|
*
|
|
* PARAMETERS: package_object - Pointer to the package object
|
|
* buffer_size_needed - u32 pointer of the size buffer
|
|
* needed to properly return the
|
|
* parsed data
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Given a package representing a PCI routing table, this
|
|
* calculates the size of the corresponding linked list of
|
|
* descriptions.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_rs_get_pci_routing_table_length (
|
|
union acpi_operand_object *package_object,
|
|
acpi_size *buffer_size_needed)
|
|
{
|
|
u32 number_of_elements;
|
|
acpi_size temp_size_needed = 0;
|
|
union acpi_operand_object **top_object_list;
|
|
u32 index;
|
|
union acpi_operand_object *package_element;
|
|
union acpi_operand_object **sub_object_list;
|
|
u8 name_found;
|
|
u32 table_index;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("rs_get_pci_routing_table_length");
|
|
|
|
|
|
number_of_elements = package_object->package.count;
|
|
|
|
/*
|
|
* Calculate the size of the return buffer.
|
|
* The base size is the number of elements * the sizes of the
|
|
* structures. Additional space for the strings is added below.
|
|
* The minus one is to subtract the size of the u8 Source[1]
|
|
* member because it is added below.
|
|
*
|
|
* But each PRT_ENTRY structure has a pointer to a string and
|
|
* the size of that string must be found.
|
|
*/
|
|
top_object_list = package_object->package.elements;
|
|
|
|
for (index = 0; index < number_of_elements; index++) {
|
|
/*
|
|
* Dereference the sub-package
|
|
*/
|
|
package_element = *top_object_list;
|
|
|
|
/*
|
|
* The sub_object_list will now point to an array of the
|
|
* four IRQ elements: Address, Pin, Source and source_index
|
|
*/
|
|
sub_object_list = package_element->package.elements;
|
|
|
|
/*
|
|
* Scan the irq_table_elements for the Source Name String
|
|
*/
|
|
name_found = FALSE;
|
|
|
|
for (table_index = 0; table_index < 4 && !name_found; table_index++) {
|
|
if ((ACPI_TYPE_STRING == ACPI_GET_OBJECT_TYPE (*sub_object_list)) ||
|
|
((ACPI_TYPE_LOCAL_REFERENCE == ACPI_GET_OBJECT_TYPE (*sub_object_list)) &&
|
|
((*sub_object_list)->reference.opcode == AML_INT_NAMEPATH_OP))) {
|
|
name_found = TRUE;
|
|
}
|
|
else {
|
|
/*
|
|
* Look at the next element
|
|
*/
|
|
sub_object_list++;
|
|
}
|
|
}
|
|
|
|
temp_size_needed += (sizeof (struct acpi_pci_routing_table) - 4);
|
|
|
|
/*
|
|
* Was a String type found?
|
|
*/
|
|
if (name_found) {
|
|
if (ACPI_GET_OBJECT_TYPE (*sub_object_list) == ACPI_TYPE_STRING) {
|
|
/*
|
|
* The length String.Length field does not include the
|
|
* terminating NULL, add 1
|
|
*/
|
|
temp_size_needed += ((acpi_size) (*sub_object_list)->string.length + 1);
|
|
}
|
|
else {
|
|
temp_size_needed += acpi_ns_get_pathname_length (
|
|
(*sub_object_list)->reference.node);
|
|
}
|
|
}
|
|
else {
|
|
/*
|
|
* If no name was found, then this is a NULL, which is
|
|
* translated as a u32 zero.
|
|
*/
|
|
temp_size_needed += sizeof (u32);
|
|
}
|
|
|
|
/* Round up the size since each element must be aligned */
|
|
|
|
temp_size_needed = ACPI_ROUND_UP_to_64_bITS (temp_size_needed);
|
|
|
|
/*
|
|
* Point to the next union acpi_operand_object
|
|
*/
|
|
top_object_list++;
|
|
}
|
|
|
|
/*
|
|
* Adding an extra element to the end of the list, essentially a NULL terminator
|
|
*/
|
|
*buffer_size_needed = temp_size_needed + sizeof (struct acpi_pci_routing_table);
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|