mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
synced 2026-10-29 03:01:39 -04:00
ACPICA: Add support for complex _PLD buffers.
_PLD (Physical Location of Device) returns a bit-packed buffer that is difficult to parse. This change adds a new interface, AcpiDecodePldBuffer that parses the buffer into a more usable local struct. Also adds macros to both get and set individual fields within the packed _PLD buffer. Adds a new include file, acbuffer.h - which will be expanded to add structs for other ACPI names that return buffers. ACPICA BZ 954. Emit (in comments) the decoded contents of a static _PLD buffer in order to improve comprehension of this bit-packed buffer. Add multi-endian support to the _PLD decode routine. Deploy the multi-endian macros to extract data from the _PLD buffer. Signed-off-by: Bob Moore <[email protected]> Signed-off-by: Feng Tang <[email protected]> Signed-off-by: Len Brown <[email protected]>
This commit is contained in:
Bob Moore
Len Brown
parent
4e2f9c278a
commit
be030a5768
10 changed files with 360 additions and 24 deletions
192
include/acpi/acbuffer.h
Normal file
192
include/acpi/acbuffer.h
Normal file
|
|
@ -0,0 +1,192 @@
|
|||
/******************************************************************************
|
||||
*
|
||||
* Name: acbuffer.h - Support for buffers returned by ACPI predefined names
|
||||
*
|
||||
*****************************************************************************/
|
||||
|
||||
/*
|
||||
* Copyright (C) 2000 - 2012, 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.
|
||||
*/
|
||||
|
||||
#ifndef __ACBUFFER_H__
|
||||
#define __ACBUFFER_H__
|
||||
|
||||
/*
|
||||
* Note: C bitfields are not used for this reason:
|
||||
*
|
||||
* "Bitfields are great and easy to read, but unfortunately the C language
|
||||
* does not specify the layout of bitfields in memory, which means they are
|
||||
* essentially useless for dealing with packed data in on-disk formats or
|
||||
* binary wire protocols." (Or ACPI tables and buffers.) "If you ask me,
|
||||
* this decision was a design error in C. Ritchie could have picked an order
|
||||
* and stuck with it." Norman Ramsey.
|
||||
* See http://stackoverflow.com/a/1053662/41661
|
||||
*/
|
||||
|
||||
/*
|
||||
* Formatted _PLD return value. The minimum size is a package containing
|
||||
* one buffer.
|
||||
* Revision 1: Buffer is 16 bytes (128 bits)
|
||||
* Revision 2: Buffer is 20 bytes (160 bits)
|
||||
*
|
||||
* Note: This structure is returned from the acpi_decode_pld_buffer
|
||||
* interface.
|
||||
*/
|
||||
struct acpi_pld_info {
|
||||
u8 revision;
|
||||
u8 ignore_color;
|
||||
u32 color;
|
||||
u16 width;
|
||||
u16 height;
|
||||
u8 user_visible;
|
||||
u8 dock;
|
||||
u8 lid;
|
||||
u8 panel;
|
||||
u8 vertical_position;
|
||||
u8 horizontal_position;
|
||||
u8 shape;
|
||||
u8 group_orientation;
|
||||
u8 group_token;
|
||||
u8 group_position;
|
||||
u8 bay;
|
||||
u8 ejectable;
|
||||
u8 ospm_eject_required;
|
||||
u8 cabinet_number;
|
||||
u8 card_cage_number;
|
||||
u8 reference;
|
||||
u8 rotation;
|
||||
u8 order;
|
||||
u8 reserved;
|
||||
u16 vertical_offset;
|
||||
u16 horizontal_offset;
|
||||
};
|
||||
|
||||
/*
|
||||
* Macros to:
|
||||
* 1) Convert a _PLD buffer to internal struct acpi_pld_info format - ACPI_PLD_GET*
|
||||
* (Used by acpi_decode_pld_buffer)
|
||||
* 2) Construct a _PLD buffer - ACPI_PLD_SET*
|
||||
* (Intended for BIOS use only)
|
||||
*/
|
||||
#define ACPI_PLD_REV1_BUFFER_SIZE 16 /* For Revision 1 of the buffer (From ACPI spec) */
|
||||
#define ACPI_PLD_BUFFER_SIZE 20 /* For Revision 2 of the buffer (From ACPI spec) */
|
||||
|
||||
/* First 32-bit dword, bits 0:32 */
|
||||
|
||||
#define ACPI_PLD_GET_REVISION(dword) ACPI_GET_BITS (dword, 0, ACPI_7BIT_MASK)
|
||||
#define ACPI_PLD_SET_REVISION(dword,value) ACPI_SET_BITS (dword, 0, ACPI_7BIT_MASK, value) /* Offset 0, Len 7 */
|
||||
|
||||
#define ACPI_PLD_GET_IGNORE_COLOR(dword) ACPI_GET_BITS (dword, 7, ACPI_1BIT_MASK)
|
||||
#define ACPI_PLD_SET_IGNORE_COLOR(dword,value) ACPI_SET_BITS (dword, 7, ACPI_1BIT_MASK, value) /* Offset 7, Len 1 */
|
||||
|
||||
#define ACPI_PLD_GET_COLOR(dword) ACPI_GET_BITS (dword, 8, ACPI_24BIT_MASK)
|
||||
#define ACPI_PLD_SET_COLOR(dword,value) ACPI_SET_BITS (dword, 8, ACPI_24BIT_MASK, value) /* Offset 8, Len 24 */
|
||||
|
||||
/* Second 32-bit dword, bits 33:63 */
|
||||
|
||||
#define ACPI_PLD_GET_WIDTH(dword) ACPI_GET_BITS (dword, 0, ACPI_16BIT_MASK)
|
||||
#define ACPI_PLD_SET_WIDTH(dword,value) ACPI_SET_BITS (dword, 0, ACPI_16BIT_MASK, value) /* Offset 32+0=32, Len 16 */
|
||||
|
||||
#define ACPI_PLD_GET_HEIGHT(dword) ACPI_GET_BITS (dword, 16, ACPI_16BIT_MASK)
|
||||
#define ACPI_PLD_SET_HEIGHT(dword,value) ACPI_SET_BITS (dword, 16, ACPI_16BIT_MASK, value) /* Offset 32+16=48, Len 16 */
|
||||
|
||||
/* Third 32-bit dword, bits 64:95 */
|
||||
|
||||
#define ACPI_PLD_GET_USER_VISIBLE(dword) ACPI_GET_BITS (dword, 0, ACPI_1BIT_MASK)
|
||||
#define ACPI_PLD_SET_USER_VISIBLE(dword,value) ACPI_SET_BITS (dword, 0, ACPI_1BIT_MASK, value) /* Offset 64+0=64, Len 1 */
|
||||
|
||||
#define ACPI_PLD_GET_DOCK(dword) ACPI_GET_BITS (dword, 1, ACPI_1BIT_MASK)
|
||||
#define ACPI_PLD_SET_DOCK(dword,value) ACPI_SET_BITS (dword, 1, ACPI_1BIT_MASK, value) /* Offset 64+1=65, Len 1 */
|
||||
|
||||
#define ACPI_PLD_GET_LID(dword) ACPI_GET_BITS (dword, 2, ACPI_1BIT_MASK)
|
||||
#define ACPI_PLD_SET_LID(dword,value) ACPI_SET_BITS (dword, 2, ACPI_1BIT_MASK, value) /* Offset 64+2=66, Len 1 */
|
||||
|
||||
#define ACPI_PLD_GET_PANEL(dword) ACPI_GET_BITS (dword, 3, ACPI_3BIT_MASK)
|
||||
#define ACPI_PLD_SET_PANEL(dword,value) ACPI_SET_BITS (dword, 3, ACPI_3BIT_MASK, value) /* Offset 64+3=67, Len 3 */
|
||||
|
||||
#define ACPI_PLD_GET_VERTICAL(dword) ACPI_GET_BITS (dword, 6, ACPI_2BIT_MASK)
|
||||
#define ACPI_PLD_SET_VERTICAL(dword,value) ACPI_SET_BITS (dword, 6, ACPI_2BIT_MASK, value) /* Offset 64+6=70, Len 2 */
|
||||
|
||||
#define ACPI_PLD_GET_HORIZONTAL(dword) ACPI_GET_BITS (dword, 8, ACPI_2BIT_MASK)
|
||||
#define ACPI_PLD_SET_HORIZONTAL(dword,value) ACPI_SET_BITS (dword, 8, ACPI_2BIT_MASK, value) /* Offset 64+8=72, Len 2 */
|
||||
|
||||
#define ACPI_PLD_GET_SHAPE(dword) ACPI_GET_BITS (dword, 10, ACPI_4BIT_MASK)
|
||||
#define ACPI_PLD_SET_SHAPE(dword,value) ACPI_SET_BITS (dword, 10, ACPI_4BIT_MASK, value) /* Offset 64+10=74, Len 4 */
|
||||
|
||||
#define ACPI_PLD_GET_ORIENTATION(dword) ACPI_GET_BITS (dword, 14, ACPI_1BIT_MASK)
|
||||
#define ACPI_PLD_SET_ORIENTATION(dword,value) ACPI_SET_BITS (dword, 14, ACPI_1BIT_MASK, value) /* Offset 64+14=78, Len 1 */
|
||||
|
||||
#define ACPI_PLD_GET_TOKEN(dword) ACPI_GET_BITS (dword, 15, ACPI_8BIT_MASK)
|
||||
#define ACPI_PLD_SET_TOKEN(dword,value) ACPI_SET_BITS (dword, 15, ACPI_8BIT_MASK, value) /* Offset 64+15=79, Len 8 */
|
||||
|
||||
#define ACPI_PLD_GET_POSITION(dword) ACPI_GET_BITS (dword, 23, ACPI_8BIT_MASK)
|
||||
#define ACPI_PLD_SET_POSITION(dword,value) ACPI_SET_BITS (dword, 23, ACPI_8BIT_MASK, value) /* Offset 64+23=87, Len 8 */
|
||||
|
||||
#define ACPI_PLD_GET_BAY(dword) ACPI_GET_BITS (dword, 31, ACPI_1BIT_MASK)
|
||||
#define ACPI_PLD_SET_BAY(dword,value) ACPI_SET_BITS (dword, 31, ACPI_1BIT_MASK, value) /* Offset 64+31=95, Len 1 */
|
||||
|
||||
/* Fourth 32-bit dword, bits 96:127 */
|
||||
|
||||
#define ACPI_PLD_GET_EJECTABLE(dword) ACPI_GET_BITS (dword, 0, ACPI_1BIT_MASK)
|
||||
#define ACPI_PLD_SET_EJECTABLE(dword,value) ACPI_SET_BITS (dword, 0, ACPI_1BIT_MASK, value) /* Offset 96+0=96, Len 1 */
|
||||
|
||||
#define ACPI_PLD_GET_OSPM_EJECT(dword) ACPI_GET_BITS (dword, 1, ACPI_1BIT_MASK)
|
||||
#define ACPI_PLD_SET_OSPM_EJECT(dword,value) ACPI_SET_BITS (dword, 1, ACPI_1BIT_MASK, value) /* Offset 96+1=97, Len 1 */
|
||||
|
||||
#define ACPI_PLD_GET_CABINET(dword) ACPI_GET_BITS (dword, 2, ACPI_8BIT_MASK)
|
||||
#define ACPI_PLD_SET_CABINET(dword,value) ACPI_SET_BITS (dword, 2, ACPI_8BIT_MASK, value) /* Offset 96+2=98, Len 8 */
|
||||
|
||||
#define ACPI_PLD_GET_CARD_CAGE(dword) ACPI_GET_BITS (dword, 10, ACPI_8BIT_MASK)
|
||||
#define ACPI_PLD_SET_CARD_CAGE(dword,value) ACPI_SET_BITS (dword, 10, ACPI_8BIT_MASK, value) /* Offset 96+10=106, Len 8 */
|
||||
|
||||
#define ACPI_PLD_GET_REFERENCE(dword) ACPI_GET_BITS (dword, 18, ACPI_1BIT_MASK)
|
||||
#define ACPI_PLD_SET_REFERENCE(dword,value) ACPI_SET_BITS (dword, 18, ACPI_1BIT_MASK, value) /* Offset 96+18=114, Len 1 */
|
||||
|
||||
#define ACPI_PLD_GET_ROTATION(dword) ACPI_GET_BITS (dword, 19, ACPI_4BIT_MASK)
|
||||
#define ACPI_PLD_SET_ROTATION(dword,value) ACPI_SET_BITS (dword, 19, ACPI_4BIT_MASK, value) /* Offset 96+19=115, Len 4 */
|
||||
|
||||
#define ACPI_PLD_GET_ORDER(dword) ACPI_GET_BITS (dword, 23, ACPI_5BIT_MASK)
|
||||
#define ACPI_PLD_SET_ORDER(dword,value) ACPI_SET_BITS (dword, 23, ACPI_5BIT_MASK, value) /* Offset 96+23=119, Len 5 */
|
||||
|
||||
/* Fifth 32-bit dword, bits 128:159 (Revision 2 of _PLD only) */
|
||||
|
||||
#define ACPI_PLD_GET_VERT_OFFSET(dword) ACPI_GET_BITS (dword, 0, ACPI_16BIT_MASK)
|
||||
#define ACPI_PLD_SET_VERT_OFFSET(dword,value) ACPI_SET_BITS (dword, 0, ACPI_16BIT_MASK, value) /* Offset 128+0=128, Len 16 */
|
||||
|
||||
#define ACPI_PLD_GET_HORIZ_OFFSET(dword) ACPI_GET_BITS (dword, 16, ACPI_16BIT_MASK)
|
||||
#define ACPI_PLD_SET_HORIZ_OFFSET(dword,value) ACPI_SET_BITS (dword, 16, ACPI_16BIT_MASK, value) /* Offset 128+16=144, Len 16 */
|
||||
|
||||
#endif /* ACBUFFER_H */
|
||||
|
|
@ -63,6 +63,7 @@
|
|||
#define METHOD_NAME__PRW "_PRW"
|
||||
#define METHOD_NAME__SRS "_SRS"
|
||||
#define METHOD_NAME__CBA "_CBA"
|
||||
#define METHOD_NAME__PLD "_PLD"
|
||||
|
||||
/* Method names - these methods must appear at the namespace root */
|
||||
|
||||
|
|
|
|||
|
|
@ -52,6 +52,7 @@
|
|||
#include "acconfig.h"
|
||||
#include "actypes.h"
|
||||
#include "actbl.h"
|
||||
#include "acbuffer.h"
|
||||
|
||||
extern u8 acpi_gbl_permanent_mmap;
|
||||
|
||||
|
|
@ -144,6 +145,10 @@ acpi_check_address_range(acpi_adr_space_type space_id,
|
|||
acpi_physical_address address,
|
||||
acpi_size length, u8 warn);
|
||||
|
||||
acpi_status
|
||||
acpi_decode_pld_buffer(u8 *in_buffer,
|
||||
acpi_size length, struct acpi_pld_info **return_buffer);
|
||||
|
||||
/*
|
||||
* ACPI Memory management
|
||||
*/
|
||||
|
|
|
|||
|
|
@ -79,9 +79,15 @@
|
|||
#pragma pack(1)
|
||||
|
||||
/*
|
||||
* Note about bitfields: The u8 type is used for bitfields in ACPI tables.
|
||||
* This is the only type that is even remotely portable. Anything else is not
|
||||
* portable, so do not use any other bitfield types.
|
||||
* Note: C bitfields are not used for this reason:
|
||||
*
|
||||
* "Bitfields are great and easy to read, but unfortunately the C language
|
||||
* does not specify the layout of bitfields in memory, which means they are
|
||||
* essentially useless for dealing with packed data in on-disk formats or
|
||||
* binary wire protocols." (Or ACPI tables and buffers.) "If you ask me,
|
||||
* this decision was a design error in C. Ritchie could have picked an order
|
||||
* and stuck with it." Norman Ramsey.
|
||||
* See http://stackoverflow.com/a/1053662/41661
|
||||
*/
|
||||
|
||||
/*******************************************************************************
|
||||
|
|
|
|||
|
|
@ -79,9 +79,15 @@
|
|||
#pragma pack(1)
|
||||
|
||||
/*
|
||||
* Note about bitfields: The u8 type is used for bitfields in ACPI tables.
|
||||
* This is the only type that is even remotely portable. Anything else is not
|
||||
* portable, so do not use any other bitfield types.
|
||||
* Note: C bitfields are not used for this reason:
|
||||
*
|
||||
* "Bitfields are great and easy to read, but unfortunately the C language
|
||||
* does not specify the layout of bitfields in memory, which means they are
|
||||
* essentially useless for dealing with packed data in on-disk formats or
|
||||
* binary wire protocols." (Or ACPI tables and buffers.) "If you ask me,
|
||||
* this decision was a design error in C. Ritchie could have picked an order
|
||||
* and stuck with it." Norman Ramsey.
|
||||
* See http://stackoverflow.com/a/1053662/41661
|
||||
*/
|
||||
|
||||
/*******************************************************************************
|
||||
|
|
|
|||
|
|
@ -98,9 +98,15 @@
|
|||
#pragma pack(1)
|
||||
|
||||
/*
|
||||
* Note about bitfields: The u8 type is used for bitfields in ACPI tables.
|
||||
* This is the only type that is even remotely portable. Anything else is not
|
||||
* portable, so do not use any other bitfield types.
|
||||
* Note: C bitfields are not used for this reason:
|
||||
*
|
||||
* "Bitfields are great and easy to read, but unfortunately the C language
|
||||
* does not specify the layout of bitfields in memory, which means they are
|
||||
* essentially useless for dealing with packed data in on-disk formats or
|
||||
* binary wire protocols." (Or ACPI tables and buffers.) "If you ask me,
|
||||
* this decision was a design error in C. Ritchie could have picked an order
|
||||
* and stuck with it." Norman Ramsey.
|
||||
* See http://stackoverflow.com/a/1053662/41661
|
||||
*/
|
||||
|
||||
/*******************************************************************************
|
||||
|
|
|
|||
|
|
@ -86,9 +86,15 @@
|
|||
#pragma pack(1)
|
||||
|
||||
/*
|
||||
* Note about bitfields: The u8 type is used for bitfields in ACPI tables.
|
||||
* This is the only type that is even remotely portable. Anything else is not
|
||||
* portable, so do not use any other bitfield types.
|
||||
* Note: C bitfields are not used for this reason:
|
||||
*
|
||||
* "Bitfields are great and easy to read, but unfortunately the C language
|
||||
* does not specify the layout of bitfields in memory, which means they are
|
||||
* essentially useless for dealing with packed data in on-disk formats or
|
||||
* binary wire protocols." (Or ACPI tables and buffers.) "If you ask me,
|
||||
* this decision was a design error in C. Ritchie could have picked an order
|
||||
* and stuck with it." Norman Ramsey.
|
||||
* See http://stackoverflow.com/a/1053662/41661
|
||||
*/
|
||||
|
||||
/*******************************************************************************
|
||||
|
|
|
|||
Loading…
Reference in a new issue