1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/**********************************************************
* Copyright 2007-2009 VMware, Inc. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
**********************************************************/
/*
* svga3d_caps.h --
*
* Definitions for SVGA3D hardware capabilities. Capabilities
* are used to query for optional rendering features during
* driver initialization. The capability data is stored as very
* basic key/value dictionary within the "FIFO register" memory
* area at the beginning of BAR2.
*
* Note that these definitions are only for 3D capabilities.
* The SVGA device also has "device capabilities" and "FIFO
* capabilities", which are non-3D-specific and are stored as
* bitfields rather than key/value pairs.
*/
#ifndef _SVGA3D_CAPS_H_
#define _SVGA3D_CAPS_H_
#define SVGA_FIFO_3D_CAPS_SIZE (SVGA_FIFO_3D_CAPS_LAST - \
SVGA_FIFO_3D_CAPS + 1)
/*
* SVGA3dCapsRecordType
*
* Record types that can be found in the caps block.
* Related record types are grouped together numerically so that
* SVGA3dCaps_FindRecord() can be applied on a range of record
* types.
*/
typedef enum {
SVGA3DCAPS_RECORD_UNKNOWN = 0,
SVGA3DCAPS_RECORD_DEVCAPS_MIN = 0x100,
SVGA3DCAPS_RECORD_DEVCAPS = 0x100,
SVGA3DCAPS_RECORD_DEVCAPS_MAX = 0x1ff,
SVGA3DCAPS_RECORD_DEVCAPS_FORCE32 = 0xffffffff
} SVGA3dCapsRecordType;
/*
* SVGA3dCapsRecordHeader
*
* Header field leading each caps block record. Contains the offset (in
* register words, NOT bytes) to the next caps block record (or the end
* of caps block records which will be a zero word) and the record type
* as defined above.
*/
typedef
struct SVGA3dCapsRecordHeader {
uint32 length;
SVGA3dCapsRecordType type;
}
SVGA3dCapsRecordHeader;
/*
* SVGA3dCapsRecord
*
* Caps block record; "data" is a placeholder for the actual data structure
* contained within the record; for example a record containing a FOOBAR
* structure would be of size "sizeof(SVGA3dCapsRecordHeader) +
* sizeof(FOOBAR)".
*/
typedef
struct SVGA3dCapsRecord {
SVGA3dCapsRecordHeader header;
uint32 data[1];
}
SVGA3dCapsRecord;
typedef uint32 SVGA3dCapPair[2];
/*
*----------------------------------------------------------------------
*
* SVGA3dCaps_FindRecord
*
* Finds the record with the highest-valued type within the given range
* in the caps block.
*
* Result: pointer to found record, or NULL if not found.
*
*----------------------------------------------------------------------
*/
static INLINE SVGA3dCapsRecord *
SVGA3dCaps_FindRecord(const uint32 *capsBlock,
SVGA3dCapsRecordType recordTypeMin,
SVGA3dCapsRecordType recordTypeMax)
{
SVGA3dCapsRecord *record, *found = NULL;
uint32 offset;
/*
* Search linearly through the caps block records for the specified type.
*/
for (offset = 0; capsBlock[offset] != 0; offset += capsBlock[offset]) {
record = (SVGA3dCapsRecord *) (capsBlock + offset);
if ((record->header.type >= recordTypeMin) &&
(record->header.type <= recordTypeMax) &&
(!found || (record->header.type > found->header.type))) {
found = record;
}
}
return found;
}
#endif // _SVGA3D_CAPS_H_
|
