Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
acbuffer.h
Go to the documentation of this file.
1 /******************************************************************************
2  *
3  * Name: acbuffer.h - Support for buffers returned by ACPI predefined names
4  *
5  *****************************************************************************/
6 
7 /*
8  * Copyright (C) 2000 - 2012, Intel Corp.
9  * All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  * notice, this list of conditions, and the following disclaimer,
16  * without modification.
17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18  * substantially similar to the "NO WARRANTY" disclaimer below
19  * ("Disclaimer") and any redistribution must be conditioned upon
20  * including a substantially similar Disclaimer requirement for further
21  * binary redistribution.
22  * 3. Neither the names of the above-listed copyright holders nor the names
23  * of any contributors may be used to endorse or promote products derived
24  * from this software without specific prior written permission.
25  *
26  * Alternatively, this software may be distributed under the terms of the
27  * GNU General Public License ("GPL") version 2 as published by the Free
28  * Software Foundation.
29  *
30  * NO WARRANTY
31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41  * POSSIBILITY OF SUCH DAMAGES.
42  */
43 
44 #ifndef __ACBUFFER_H__
45 #define __ACBUFFER_H__
46 
47 /*
48  * Contains buffer structures for these predefined names:
49  * _FDE, _GRT, _GTM, _PLD, _SRT
50  */
51 
52 /*
53  * Note: C bitfields are not used for this reason:
54  *
55  * "Bitfields are great and easy to read, but unfortunately the C language
56  * does not specify the layout of bitfields in memory, which means they are
57  * essentially useless for dealing with packed data in on-disk formats or
58  * binary wire protocols." (Or ACPI tables and buffers.) "If you ask me,
59  * this decision was a design error in C. Ritchie could have picked an order
60  * and stuck with it." Norman Ramsey.
61  * See http://stackoverflow.com/a/1053662/41661
62  */
63 
64 /* _FDE return value */
65 
66 struct acpi_fde_info {
67  u32 floppy0;
68  u32 floppy1;
69  u32 floppy2;
70  u32 floppy3;
71  u32 tape;
72 };
73 
74 /*
75  * _GRT return value
76  * _SRT input value
77  */
78 struct acpi_grt_info {
79  u16 year;
80  u8 month;
81  u8 day;
82  u8 hour;
83  u8 minute;
84  u8 second;
85  u8 valid;
86  u16 milliseconds;
87  u16 timezone;
88  u8 daylight;
89  u8 reserved[3];
90 };
91 
92 /* _GTM return value */
93 
94 struct acpi_gtm_info {
95  u32 pio_speed0;
96  u32 dma_speed0;
97  u32 pio_speed1;
98  u32 dma_speed1;
99  u32 flags;
100 };
101 
102 /*
103  * Formatted _PLD return value. The minimum size is a package containing
104  * one buffer.
105  * Revision 1: Buffer is 16 bytes (128 bits)
106  * Revision 2: Buffer is 20 bytes (160 bits)
107  *
108  * Note: This structure is returned from the acpi_decode_pld_buffer
109  * interface.
110  */
111 struct acpi_pld_info {
112  u8 revision;
113  u8 ignore_color;
114  u32 color;
115  u16 width;
116  u16 height;
117  u8 user_visible;
118  u8 dock;
119  u8 lid;
120  u8 panel;
121  u8 vertical_position;
122  u8 horizontal_position;
123  u8 shape;
124  u8 group_orientation;
125  u8 group_token;
126  u8 group_position;
127  u8 bay;
128  u8 ejectable;
129  u8 ospm_eject_required;
130  u8 cabinet_number;
131  u8 card_cage_number;
132  u8 reference;
133  u8 rotation;
134  u8 order;
135  u8 reserved;
136  u16 vertical_offset;
137  u16 horizontal_offset;
138 };
139 
140 /*
141  * Macros to:
142  * 1) Convert a _PLD buffer to internal struct acpi_pld_info format - ACPI_PLD_GET*
143  * (Used by acpi_decode_pld_buffer)
144  * 2) Construct a _PLD buffer - ACPI_PLD_SET*
145  * (Intended for BIOS use only)
146  */
147 #define ACPI_PLD_REV1_BUFFER_SIZE 16 /* For Revision 1 of the buffer (From ACPI spec) */
148 #define ACPI_PLD_BUFFER_SIZE 20 /* For Revision 2 of the buffer (From ACPI spec) */
149 
150 /* First 32-bit dword, bits 0:32 */
151 
152 #define ACPI_PLD_GET_REVISION(dword) ACPI_GET_BITS (dword, 0, ACPI_7BIT_MASK)
153 #define ACPI_PLD_SET_REVISION(dword,value) ACPI_SET_BITS (dword, 0, ACPI_7BIT_MASK, value) /* Offset 0, Len 7 */
154 
155 #define ACPI_PLD_GET_IGNORE_COLOR(dword) ACPI_GET_BITS (dword, 7, ACPI_1BIT_MASK)
156 #define ACPI_PLD_SET_IGNORE_COLOR(dword,value) ACPI_SET_BITS (dword, 7, ACPI_1BIT_MASK, value) /* Offset 7, Len 1 */
157 
158 #define ACPI_PLD_GET_COLOR(dword) ACPI_GET_BITS (dword, 8, ACPI_24BIT_MASK)
159 #define ACPI_PLD_SET_COLOR(dword,value) ACPI_SET_BITS (dword, 8, ACPI_24BIT_MASK, value) /* Offset 8, Len 24 */
160 
161 /* Second 32-bit dword, bits 33:63 */
162 
163 #define ACPI_PLD_GET_WIDTH(dword) ACPI_GET_BITS (dword, 0, ACPI_16BIT_MASK)
164 #define ACPI_PLD_SET_WIDTH(dword,value) ACPI_SET_BITS (dword, 0, ACPI_16BIT_MASK, value) /* Offset 32+0=32, Len 16 */
165 
166 #define ACPI_PLD_GET_HEIGHT(dword) ACPI_GET_BITS (dword, 16, ACPI_16BIT_MASK)
167 #define ACPI_PLD_SET_HEIGHT(dword,value) ACPI_SET_BITS (dword, 16, ACPI_16BIT_MASK, value) /* Offset 32+16=48, Len 16 */
168 
169 /* Third 32-bit dword, bits 64:95 */
170 
171 #define ACPI_PLD_GET_USER_VISIBLE(dword) ACPI_GET_BITS (dword, 0, ACPI_1BIT_MASK)
172 #define ACPI_PLD_SET_USER_VISIBLE(dword,value) ACPI_SET_BITS (dword, 0, ACPI_1BIT_MASK, value) /* Offset 64+0=64, Len 1 */
173 
174 #define ACPI_PLD_GET_DOCK(dword) ACPI_GET_BITS (dword, 1, ACPI_1BIT_MASK)
175 #define ACPI_PLD_SET_DOCK(dword,value) ACPI_SET_BITS (dword, 1, ACPI_1BIT_MASK, value) /* Offset 64+1=65, Len 1 */
176 
177 #define ACPI_PLD_GET_LID(dword) ACPI_GET_BITS (dword, 2, ACPI_1BIT_MASK)
178 #define ACPI_PLD_SET_LID(dword,value) ACPI_SET_BITS (dword, 2, ACPI_1BIT_MASK, value) /* Offset 64+2=66, Len 1 */
179 
180 #define ACPI_PLD_GET_PANEL(dword) ACPI_GET_BITS (dword, 3, ACPI_3BIT_MASK)
181 #define ACPI_PLD_SET_PANEL(dword,value) ACPI_SET_BITS (dword, 3, ACPI_3BIT_MASK, value) /* Offset 64+3=67, Len 3 */
182 
183 #define ACPI_PLD_GET_VERTICAL(dword) ACPI_GET_BITS (dword, 6, ACPI_2BIT_MASK)
184 #define ACPI_PLD_SET_VERTICAL(dword,value) ACPI_SET_BITS (dword, 6, ACPI_2BIT_MASK, value) /* Offset 64+6=70, Len 2 */
185 
186 #define ACPI_PLD_GET_HORIZONTAL(dword) ACPI_GET_BITS (dword, 8, ACPI_2BIT_MASK)
187 #define ACPI_PLD_SET_HORIZONTAL(dword,value) ACPI_SET_BITS (dword, 8, ACPI_2BIT_MASK, value) /* Offset 64+8=72, Len 2 */
188 
189 #define ACPI_PLD_GET_SHAPE(dword) ACPI_GET_BITS (dword, 10, ACPI_4BIT_MASK)
190 #define ACPI_PLD_SET_SHAPE(dword,value) ACPI_SET_BITS (dword, 10, ACPI_4BIT_MASK, value) /* Offset 64+10=74, Len 4 */
191 
192 #define ACPI_PLD_GET_ORIENTATION(dword) ACPI_GET_BITS (dword, 14, ACPI_1BIT_MASK)
193 #define ACPI_PLD_SET_ORIENTATION(dword,value) ACPI_SET_BITS (dword, 14, ACPI_1BIT_MASK, value) /* Offset 64+14=78, Len 1 */
194 
195 #define ACPI_PLD_GET_TOKEN(dword) ACPI_GET_BITS (dword, 15, ACPI_8BIT_MASK)
196 #define ACPI_PLD_SET_TOKEN(dword,value) ACPI_SET_BITS (dword, 15, ACPI_8BIT_MASK, value) /* Offset 64+15=79, Len 8 */
197 
198 #define ACPI_PLD_GET_POSITION(dword) ACPI_GET_BITS (dword, 23, ACPI_8BIT_MASK)
199 #define ACPI_PLD_SET_POSITION(dword,value) ACPI_SET_BITS (dword, 23, ACPI_8BIT_MASK, value) /* Offset 64+23=87, Len 8 */
200 
201 #define ACPI_PLD_GET_BAY(dword) ACPI_GET_BITS (dword, 31, ACPI_1BIT_MASK)
202 #define ACPI_PLD_SET_BAY(dword,value) ACPI_SET_BITS (dword, 31, ACPI_1BIT_MASK, value) /* Offset 64+31=95, Len 1 */
203 
204 /* Fourth 32-bit dword, bits 96:127 */
205 
206 #define ACPI_PLD_GET_EJECTABLE(dword) ACPI_GET_BITS (dword, 0, ACPI_1BIT_MASK)
207 #define ACPI_PLD_SET_EJECTABLE(dword,value) ACPI_SET_BITS (dword, 0, ACPI_1BIT_MASK, value) /* Offset 96+0=96, Len 1 */
208 
209 #define ACPI_PLD_GET_OSPM_EJECT(dword) ACPI_GET_BITS (dword, 1, ACPI_1BIT_MASK)
210 #define ACPI_PLD_SET_OSPM_EJECT(dword,value) ACPI_SET_BITS (dword, 1, ACPI_1BIT_MASK, value) /* Offset 96+1=97, Len 1 */
211 
212 #define ACPI_PLD_GET_CABINET(dword) ACPI_GET_BITS (dword, 2, ACPI_8BIT_MASK)
213 #define ACPI_PLD_SET_CABINET(dword,value) ACPI_SET_BITS (dword, 2, ACPI_8BIT_MASK, value) /* Offset 96+2=98, Len 8 */
214 
215 #define ACPI_PLD_GET_CARD_CAGE(dword) ACPI_GET_BITS (dword, 10, ACPI_8BIT_MASK)
216 #define ACPI_PLD_SET_CARD_CAGE(dword,value) ACPI_SET_BITS (dword, 10, ACPI_8BIT_MASK, value) /* Offset 96+10=106, Len 8 */
217 
218 #define ACPI_PLD_GET_REFERENCE(dword) ACPI_GET_BITS (dword, 18, ACPI_1BIT_MASK)
219 #define ACPI_PLD_SET_REFERENCE(dword,value) ACPI_SET_BITS (dword, 18, ACPI_1BIT_MASK, value) /* Offset 96+18=114, Len 1 */
220 
221 #define ACPI_PLD_GET_ROTATION(dword) ACPI_GET_BITS (dword, 19, ACPI_4BIT_MASK)
222 #define ACPI_PLD_SET_ROTATION(dword,value) ACPI_SET_BITS (dword, 19, ACPI_4BIT_MASK, value) /* Offset 96+19=115, Len 4 */
223 
224 #define ACPI_PLD_GET_ORDER(dword) ACPI_GET_BITS (dword, 23, ACPI_5BIT_MASK)
225 #define ACPI_PLD_SET_ORDER(dword,value) ACPI_SET_BITS (dword, 23, ACPI_5BIT_MASK, value) /* Offset 96+23=119, Len 5 */
226 
227 /* Fifth 32-bit dword, bits 128:159 (Revision 2 of _PLD only) */
228 
229 #define ACPI_PLD_GET_VERT_OFFSET(dword) ACPI_GET_BITS (dword, 0, ACPI_16BIT_MASK)
230 #define ACPI_PLD_SET_VERT_OFFSET(dword,value) ACPI_SET_BITS (dword, 0, ACPI_16BIT_MASK, value) /* Offset 128+0=128, Len 16 */
231 
232 #define ACPI_PLD_GET_HORIZ_OFFSET(dword) ACPI_GET_BITS (dword, 16, ACPI_16BIT_MASK)
233 #define ACPI_PLD_SET_HORIZ_OFFSET(dword,value) ACPI_SET_BITS (dword, 16, ACPI_16BIT_MASK, value) /* Offset 128+16=144, Len 16 */
234 
235 #endif /* ACBUFFER_H */
Generated on Thu Jan 10 2013 14:50:43 for Linux Kernel by   doxygen 1.8.2