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/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 / /***************************************************************************** * * Name: acbuffer.h - Support for buffers returned by ACPI predefined names * * Copyright (C) 2000 - 2019, Intel Corp. * ****************************************************************************/ #ifndef __ACBUFFER_H__ #define __ACBUFFER_H__ / * Contains buffer structures for these predefined names: * _FDE, _GRT, _GTM, _PLD, _SRT / / * 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 / / _FDE return value / struct acpi_fde_info { u32 floppy0; u32 floppy1; u32 floppy2; u32 floppy3; u32 tape; }; / * _GRT return value * _SRT input value / struct acpi_grt_info { u16 year; u8 month; u8 day; u8 hour; u8 minute; u8 second; u8 valid; u16 milliseconds; u16 timezone; u8 daylight; u8 reserved[3]; }; / _GTM return value / struct acpi_gtm_info { u32 pio_speed0; u32 dma_speed0; u32 pio_speed1; u32 dma_speed1; u32 flags; }; / * 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; u8 red; u8 green; u8 blue; 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_REV2_BUFFER_SIZE 20 / For Revision 2 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_RED(dword) ACPI_GET_BITS (dword, 8, ACPI_8BIT_MASK) #define ACPI_PLD_SET_RED(dword,value) ACPI_SET_BITS (dword, 8, ACPI_8BIT_MASK, value) / Offset 8, Len 8 / #define ACPI_PLD_GET_GREEN(dword) ACPI_GET_BITS (dword, 16, ACPI_8BIT_MASK) #define ACPI_PLD_SET_GREEN(dword,value) ACPI_SET_BITS (dword, 16, ACPI_8BIT_MASK, value) / Offset 16, Len 8 / #define ACPI_PLD_GET_BLUE(dword) ACPI_GET_BITS (dword, 24, ACPI_8BIT_MASK) #define ACPI_PLD_SET_BLUE(dword,value) ACPI_SET_BITS (dword, 24, ACPI_8BIT_MASK, value) / Offset 24, Len 8 / / 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 */

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