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| 4358 | Serge | 1 | /********************************************************** |
| 2 | * Copyright 2007-2009 VMware, Inc. All rights reserved. |
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| 3 | * |
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| 4 | * Permission is hereby granted, free of charge, to any person |
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| 5 | * obtaining a copy of this software and associated documentation |
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| 6 | * files (the "Software"), to deal in the Software without |
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| 7 | * restriction, including without limitation the rights to use, copy, |
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| 8 | * modify, merge, publish, distribute, sublicense, and/or sell copies |
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| 9 | * of the Software, and to permit persons to whom the Software is |
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| 10 | * furnished to do so, subject to the following conditions: |
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| 11 | * |
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| 12 | * The above copyright notice and this permission notice shall be |
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| 13 | * included in all copies or substantial portions of the Software. |
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| 14 | * |
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| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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| 16 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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| 17 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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| 18 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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| 19 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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| 20 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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| 21 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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| 22 | * SOFTWARE. |
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| 23 | * |
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| 24 | **********************************************************/ |
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| 25 | |||
| 26 | /* |
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| 27 | * svga3d_caps.h -- |
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| 28 | * |
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| 29 | * Definitions for SVGA3D hardware capabilities. Capabilities |
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| 30 | * are used to query for optional rendering features during |
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| 31 | * driver initialization. The capability data is stored as very |
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| 32 | * basic key/value dictionary within the "FIFO register" memory |
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| 33 | * area at the beginning of BAR2. |
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| 34 | * |
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| 35 | * Note that these definitions are only for 3D capabilities. |
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| 36 | * The SVGA device also has "device capabilities" and "FIFO |
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| 37 | * capabilities", which are non-3D-specific and are stored as |
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| 38 | * bitfields rather than key/value pairs. |
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| 39 | */ |
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| 40 | |||
| 41 | #ifndef _SVGA3D_CAPS_H_ |
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| 42 | #define _SVGA3D_CAPS_H_ |
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| 43 | |||
| 44 | #define SVGA_FIFO_3D_CAPS_SIZE (SVGA_FIFO_3D_CAPS_LAST - \ |
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| 45 | SVGA_FIFO_3D_CAPS + 1) |
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| 46 | |||
| 47 | |||
| 48 | /* |
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| 49 | * SVGA3dCapsRecordType |
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| 50 | * |
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| 51 | * Record types that can be found in the caps block. |
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| 52 | * Related record types are grouped together numerically so that |
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| 53 | * SVGA3dCaps_FindRecord() can be applied on a range of record |
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| 54 | * types. |
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| 55 | */ |
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| 56 | |||
| 57 | typedef enum { |
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| 58 | SVGA3DCAPS_RECORD_UNKNOWN = 0, |
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| 59 | SVGA3DCAPS_RECORD_DEVCAPS_MIN = 0x100, |
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| 60 | SVGA3DCAPS_RECORD_DEVCAPS = 0x100, |
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| 61 | SVGA3DCAPS_RECORD_DEVCAPS_MAX = 0x1ff, |
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| 62 | } SVGA3dCapsRecordType; |
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| 63 | |||
| 64 | |||
| 65 | /* |
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| 66 | * SVGA3dCapsRecordHeader |
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| 67 | * |
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| 68 | * Header field leading each caps block record. Contains the offset (in |
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| 69 | * register words, NOT bytes) to the next caps block record (or the end |
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| 70 | * of caps block records which will be a zero word) and the record type |
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| 71 | * as defined above. |
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| 72 | */ |
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| 73 | |||
| 74 | typedef |
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| 75 | struct SVGA3dCapsRecordHeader { |
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| 76 | uint32 length; |
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| 77 | SVGA3dCapsRecordType type; |
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| 78 | } |
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| 79 | SVGA3dCapsRecordHeader; |
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| 80 | |||
| 81 | |||
| 82 | /* |
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| 83 | * SVGA3dCapsRecord |
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| 84 | * |
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| 85 | * Caps block record; "data" is a placeholder for the actual data structure |
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| 86 | * contained within the record; for example a record containing a FOOBAR |
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| 87 | * structure would be of size "sizeof(SVGA3dCapsRecordHeader) + |
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| 88 | * sizeof(FOOBAR)". |
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| 89 | */ |
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| 90 | |||
| 91 | typedef |
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| 92 | struct SVGA3dCapsRecord { |
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| 93 | SVGA3dCapsRecordHeader header; |
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| 94 | uint32 data[1]; |
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| 95 | } |
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| 96 | SVGA3dCapsRecord; |
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| 97 | |||
| 98 | |||
| 99 | typedef uint32 SVGA3dCapPair[2]; |
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| 100 | |||
| 101 | |||
| 102 | /* |
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| 103 | *---------------------------------------------------------------------- |
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| 104 | * |
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| 105 | * SVGA3dCaps_FindRecord |
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| 106 | * |
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| 107 | * Finds the record with the highest-valued type within the given range |
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| 108 | * in the caps block. |
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| 109 | * |
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| 110 | * Result: pointer to found record, or NULL if not found. |
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| 111 | * |
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| 112 | *---------------------------------------------------------------------- |
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| 113 | */ |
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| 114 | |||
| 115 | static INLINE SVGA3dCapsRecord * |
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| 116 | SVGA3dCaps_FindRecord(const uint32 *capsBlock, |
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| 117 | SVGA3dCapsRecordType recordTypeMin, |
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| 118 | SVGA3dCapsRecordType recordTypeMax) |
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| 119 | { |
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| 120 | SVGA3dCapsRecord *record, *found = NULL; |
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| 121 | uint32 offset; |
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| 122 | |||
| 123 | /* |
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| 124 | * Search linearly through the caps block records for the specified type. |
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| 125 | */ |
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| 126 | for (offset = 0; capsBlock[offset] != 0; offset += capsBlock[offset]) { |
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| 127 | record = (SVGA3dCapsRecord *) (capsBlock + offset); |
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| 128 | if ((record->header.type >= recordTypeMin) && |
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| 129 | (record->header.type <= recordTypeMax) && |
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| 130 | (!found || (record->header.type > found->header.type))) { |
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| 131 | found = record; |
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| 132 | } |
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| 133 | } |
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| 134 | |||
| 135 | return found; |
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| 136 | } |
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| 137 | |||
| 138 | |||
| 139 | #endif // _SVGA3D_CAPS_H_ |