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95857638 | 1 | /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */ |
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2 | /****************************************************************************** |
3 | * | |
4 | * Name: acbuffer.h - Support for buffers returned by ACPI predefined names | |
5 | * | |
840c02ca | 6 | * Copyright (C) 2000 - 2019, Intel Corp. |
be030a57 | 7 | * |
95857638 | 8 | *****************************************************************************/ |
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9 | |
10 | #ifndef __ACBUFFER_H__ | |
11 | #define __ACBUFFER_H__ | |
12 | ||
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13 | /* |
14 | * Contains buffer structures for these predefined names: | |
15 | * _FDE, _GRT, _GTM, _PLD, _SRT | |
16 | */ | |
17 | ||
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18 | /* |
19 | * Note: C bitfields are not used for this reason: | |
20 | * | |
21 | * "Bitfields are great and easy to read, but unfortunately the C language | |
22 | * does not specify the layout of bitfields in memory, which means they are | |
23 | * essentially useless for dealing with packed data in on-disk formats or | |
24 | * binary wire protocols." (Or ACPI tables and buffers.) "If you ask me, | |
25 | * this decision was a design error in C. Ritchie could have picked an order | |
26 | * and stuck with it." Norman Ramsey. | |
27 | * See http://stackoverflow.com/a/1053662/41661 | |
28 | */ | |
29 | ||
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30 | /* _FDE return value */ |
31 | ||
32 | struct acpi_fde_info { | |
33 | u32 floppy0; | |
34 | u32 floppy1; | |
35 | u32 floppy2; | |
36 | u32 floppy3; | |
37 | u32 tape; | |
38 | }; | |
39 | ||
40 | /* | |
41 | * _GRT return value | |
42 | * _SRT input value | |
43 | */ | |
44 | struct acpi_grt_info { | |
45 | u16 year; | |
46 | u8 month; | |
47 | u8 day; | |
48 | u8 hour; | |
49 | u8 minute; | |
50 | u8 second; | |
51 | u8 valid; | |
52 | u16 milliseconds; | |
53 | u16 timezone; | |
54 | u8 daylight; | |
55 | u8 reserved[3]; | |
56 | }; | |
57 | ||
58 | /* _GTM return value */ | |
59 | ||
60 | struct acpi_gtm_info { | |
61 | u32 pio_speed0; | |
62 | u32 dma_speed0; | |
63 | u32 pio_speed1; | |
64 | u32 dma_speed1; | |
65 | u32 flags; | |
66 | }; | |
67 | ||
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68 | /* |
69 | * Formatted _PLD return value. The minimum size is a package containing | |
70 | * one buffer. | |
71 | * Revision 1: Buffer is 16 bytes (128 bits) | |
72 | * Revision 2: Buffer is 20 bytes (160 bits) | |
73 | * | |
74 | * Note: This structure is returned from the acpi_decode_pld_buffer | |
75 | * interface. | |
76 | */ | |
77 | struct acpi_pld_info { | |
78 | u8 revision; | |
79 | u8 ignore_color; | |
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80 | u8 red; |
81 | u8 green; | |
82 | u8 blue; | |
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83 | u16 width; |
84 | u16 height; | |
85 | u8 user_visible; | |
86 | u8 dock; | |
87 | u8 lid; | |
88 | u8 panel; | |
89 | u8 vertical_position; | |
90 | u8 horizontal_position; | |
91 | u8 shape; | |
92 | u8 group_orientation; | |
93 | u8 group_token; | |
94 | u8 group_position; | |
95 | u8 bay; | |
96 | u8 ejectable; | |
97 | u8 ospm_eject_required; | |
98 | u8 cabinet_number; | |
99 | u8 card_cage_number; | |
100 | u8 reference; | |
101 | u8 rotation; | |
102 | u8 order; | |
103 | u8 reserved; | |
104 | u16 vertical_offset; | |
105 | u16 horizontal_offset; | |
106 | }; | |
107 | ||
108 | /* | |
109 | * Macros to: | |
110 | * 1) Convert a _PLD buffer to internal struct acpi_pld_info format - ACPI_PLD_GET* | |
111 | * (Used by acpi_decode_pld_buffer) | |
112 | * 2) Construct a _PLD buffer - ACPI_PLD_SET* | |
113 | * (Intended for BIOS use only) | |
114 | */ | |
115 | #define ACPI_PLD_REV1_BUFFER_SIZE 16 /* For Revision 1 of the buffer (From ACPI spec) */ | |
35349697 | 116 | #define ACPI_PLD_REV2_BUFFER_SIZE 20 /* For Revision 2 of the buffer (From ACPI spec) */ |
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117 | #define ACPI_PLD_BUFFER_SIZE 20 /* For Revision 2 of the buffer (From ACPI spec) */ |
118 | ||
119 | /* First 32-bit dword, bits 0:32 */ | |
120 | ||
121 | #define ACPI_PLD_GET_REVISION(dword) ACPI_GET_BITS (dword, 0, ACPI_7BIT_MASK) | |
122 | #define ACPI_PLD_SET_REVISION(dword,value) ACPI_SET_BITS (dword, 0, ACPI_7BIT_MASK, value) /* Offset 0, Len 7 */ | |
123 | ||
124 | #define ACPI_PLD_GET_IGNORE_COLOR(dword) ACPI_GET_BITS (dword, 7, ACPI_1BIT_MASK) | |
125 | #define ACPI_PLD_SET_IGNORE_COLOR(dword,value) ACPI_SET_BITS (dword, 7, ACPI_1BIT_MASK, value) /* Offset 7, Len 1 */ | |
126 | ||
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127 | #define ACPI_PLD_GET_RED(dword) ACPI_GET_BITS (dword, 8, ACPI_8BIT_MASK) |
128 | #define ACPI_PLD_SET_RED(dword,value) ACPI_SET_BITS (dword, 8, ACPI_8BIT_MASK, value) /* Offset 8, Len 8 */ | |
129 | ||
130 | #define ACPI_PLD_GET_GREEN(dword) ACPI_GET_BITS (dword, 16, ACPI_8BIT_MASK) | |
131 | #define ACPI_PLD_SET_GREEN(dword,value) ACPI_SET_BITS (dword, 16, ACPI_8BIT_MASK, value) /* Offset 16, Len 8 */ | |
132 | ||
133 | #define ACPI_PLD_GET_BLUE(dword) ACPI_GET_BITS (dword, 24, ACPI_8BIT_MASK) | |
134 | #define ACPI_PLD_SET_BLUE(dword,value) ACPI_SET_BITS (dword, 24, ACPI_8BIT_MASK, value) /* Offset 24, Len 8 */ | |
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135 | |
136 | /* Second 32-bit dword, bits 33:63 */ | |
137 | ||
138 | #define ACPI_PLD_GET_WIDTH(dword) ACPI_GET_BITS (dword, 0, ACPI_16BIT_MASK) | |
139 | #define ACPI_PLD_SET_WIDTH(dword,value) ACPI_SET_BITS (dword, 0, ACPI_16BIT_MASK, value) /* Offset 32+0=32, Len 16 */ | |
140 | ||
141 | #define ACPI_PLD_GET_HEIGHT(dword) ACPI_GET_BITS (dword, 16, ACPI_16BIT_MASK) | |
142 | #define ACPI_PLD_SET_HEIGHT(dword,value) ACPI_SET_BITS (dword, 16, ACPI_16BIT_MASK, value) /* Offset 32+16=48, Len 16 */ | |
143 | ||
144 | /* Third 32-bit dword, bits 64:95 */ | |
145 | ||
146 | #define ACPI_PLD_GET_USER_VISIBLE(dword) ACPI_GET_BITS (dword, 0, ACPI_1BIT_MASK) | |
147 | #define ACPI_PLD_SET_USER_VISIBLE(dword,value) ACPI_SET_BITS (dword, 0, ACPI_1BIT_MASK, value) /* Offset 64+0=64, Len 1 */ | |
148 | ||
149 | #define ACPI_PLD_GET_DOCK(dword) ACPI_GET_BITS (dword, 1, ACPI_1BIT_MASK) | |
150 | #define ACPI_PLD_SET_DOCK(dword,value) ACPI_SET_BITS (dword, 1, ACPI_1BIT_MASK, value) /* Offset 64+1=65, Len 1 */ | |
151 | ||
152 | #define ACPI_PLD_GET_LID(dword) ACPI_GET_BITS (dword, 2, ACPI_1BIT_MASK) | |
153 | #define ACPI_PLD_SET_LID(dword,value) ACPI_SET_BITS (dword, 2, ACPI_1BIT_MASK, value) /* Offset 64+2=66, Len 1 */ | |
154 | ||
155 | #define ACPI_PLD_GET_PANEL(dword) ACPI_GET_BITS (dword, 3, ACPI_3BIT_MASK) | |
156 | #define ACPI_PLD_SET_PANEL(dword,value) ACPI_SET_BITS (dword, 3, ACPI_3BIT_MASK, value) /* Offset 64+3=67, Len 3 */ | |
157 | ||
158 | #define ACPI_PLD_GET_VERTICAL(dword) ACPI_GET_BITS (dword, 6, ACPI_2BIT_MASK) | |
159 | #define ACPI_PLD_SET_VERTICAL(dword,value) ACPI_SET_BITS (dword, 6, ACPI_2BIT_MASK, value) /* Offset 64+6=70, Len 2 */ | |
160 | ||
161 | #define ACPI_PLD_GET_HORIZONTAL(dword) ACPI_GET_BITS (dword, 8, ACPI_2BIT_MASK) | |
162 | #define ACPI_PLD_SET_HORIZONTAL(dword,value) ACPI_SET_BITS (dword, 8, ACPI_2BIT_MASK, value) /* Offset 64+8=72, Len 2 */ | |
163 | ||
164 | #define ACPI_PLD_GET_SHAPE(dword) ACPI_GET_BITS (dword, 10, ACPI_4BIT_MASK) | |
165 | #define ACPI_PLD_SET_SHAPE(dword,value) ACPI_SET_BITS (dword, 10, ACPI_4BIT_MASK, value) /* Offset 64+10=74, Len 4 */ | |
166 | ||
167 | #define ACPI_PLD_GET_ORIENTATION(dword) ACPI_GET_BITS (dword, 14, ACPI_1BIT_MASK) | |
168 | #define ACPI_PLD_SET_ORIENTATION(dword,value) ACPI_SET_BITS (dword, 14, ACPI_1BIT_MASK, value) /* Offset 64+14=78, Len 1 */ | |
169 | ||
170 | #define ACPI_PLD_GET_TOKEN(dword) ACPI_GET_BITS (dword, 15, ACPI_8BIT_MASK) | |
171 | #define ACPI_PLD_SET_TOKEN(dword,value) ACPI_SET_BITS (dword, 15, ACPI_8BIT_MASK, value) /* Offset 64+15=79, Len 8 */ | |
172 | ||
173 | #define ACPI_PLD_GET_POSITION(dword) ACPI_GET_BITS (dword, 23, ACPI_8BIT_MASK) | |
174 | #define ACPI_PLD_SET_POSITION(dword,value) ACPI_SET_BITS (dword, 23, ACPI_8BIT_MASK, value) /* Offset 64+23=87, Len 8 */ | |
175 | ||
176 | #define ACPI_PLD_GET_BAY(dword) ACPI_GET_BITS (dword, 31, ACPI_1BIT_MASK) | |
177 | #define ACPI_PLD_SET_BAY(dword,value) ACPI_SET_BITS (dword, 31, ACPI_1BIT_MASK, value) /* Offset 64+31=95, Len 1 */ | |
178 | ||
179 | /* Fourth 32-bit dword, bits 96:127 */ | |
180 | ||
181 | #define ACPI_PLD_GET_EJECTABLE(dword) ACPI_GET_BITS (dword, 0, ACPI_1BIT_MASK) | |
182 | #define ACPI_PLD_SET_EJECTABLE(dword,value) ACPI_SET_BITS (dword, 0, ACPI_1BIT_MASK, value) /* Offset 96+0=96, Len 1 */ | |
183 | ||
184 | #define ACPI_PLD_GET_OSPM_EJECT(dword) ACPI_GET_BITS (dword, 1, ACPI_1BIT_MASK) | |
185 | #define ACPI_PLD_SET_OSPM_EJECT(dword,value) ACPI_SET_BITS (dword, 1, ACPI_1BIT_MASK, value) /* Offset 96+1=97, Len 1 */ | |
186 | ||
187 | #define ACPI_PLD_GET_CABINET(dword) ACPI_GET_BITS (dword, 2, ACPI_8BIT_MASK) | |
188 | #define ACPI_PLD_SET_CABINET(dword,value) ACPI_SET_BITS (dword, 2, ACPI_8BIT_MASK, value) /* Offset 96+2=98, Len 8 */ | |
189 | ||
190 | #define ACPI_PLD_GET_CARD_CAGE(dword) ACPI_GET_BITS (dword, 10, ACPI_8BIT_MASK) | |
191 | #define ACPI_PLD_SET_CARD_CAGE(dword,value) ACPI_SET_BITS (dword, 10, ACPI_8BIT_MASK, value) /* Offset 96+10=106, Len 8 */ | |
192 | ||
193 | #define ACPI_PLD_GET_REFERENCE(dword) ACPI_GET_BITS (dword, 18, ACPI_1BIT_MASK) | |
194 | #define ACPI_PLD_SET_REFERENCE(dword,value) ACPI_SET_BITS (dword, 18, ACPI_1BIT_MASK, value) /* Offset 96+18=114, Len 1 */ | |
195 | ||
196 | #define ACPI_PLD_GET_ROTATION(dword) ACPI_GET_BITS (dword, 19, ACPI_4BIT_MASK) | |
197 | #define ACPI_PLD_SET_ROTATION(dword,value) ACPI_SET_BITS (dword, 19, ACPI_4BIT_MASK, value) /* Offset 96+19=115, Len 4 */ | |
198 | ||
199 | #define ACPI_PLD_GET_ORDER(dword) ACPI_GET_BITS (dword, 23, ACPI_5BIT_MASK) | |
200 | #define ACPI_PLD_SET_ORDER(dword,value) ACPI_SET_BITS (dword, 23, ACPI_5BIT_MASK, value) /* Offset 96+23=119, Len 5 */ | |
201 | ||
202 | /* Fifth 32-bit dword, bits 128:159 (Revision 2 of _PLD only) */ | |
203 | ||
204 | #define ACPI_PLD_GET_VERT_OFFSET(dword) ACPI_GET_BITS (dword, 0, ACPI_16BIT_MASK) | |
205 | #define ACPI_PLD_SET_VERT_OFFSET(dword,value) ACPI_SET_BITS (dword, 0, ACPI_16BIT_MASK, value) /* Offset 128+0=128, Len 16 */ | |
206 | ||
207 | #define ACPI_PLD_GET_HORIZ_OFFSET(dword) ACPI_GET_BITS (dword, 16, ACPI_16BIT_MASK) | |
208 | #define ACPI_PLD_SET_HORIZ_OFFSET(dword,value) ACPI_SET_BITS (dword, 16, ACPI_16BIT_MASK, value) /* Offset 128+16=144, Len 16 */ | |
209 | ||
210 | #endif /* ACBUFFER_H */ |