| 1 | /**********************************************************
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| 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 |
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| 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 |
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| 41 | #ifndef _SVGA3D_CAPS_H_
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| 42 | #define _SVGA3D_CAPS_H_
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| 43 |
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| 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 |
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| 47 |
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| 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 |
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| 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 |
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| 64 |
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| 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 |
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| 74 | typedef
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| 75 | struct SVGA3dCapsRecordHeader {
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| 76 | uint32_t length;
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| 77 | SVGA3dCapsRecordType type;
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| 78 | }
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| 79 | SVGA3dCapsRecordHeader;
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| 80 |
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| 81 |
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| 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 |
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| 91 | typedef
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| 92 | struct SVGA3dCapsRecord {
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| 93 | SVGA3dCapsRecordHeader header;
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| 94 | uint32_t data[1];
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| 95 | }
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| 96 | SVGA3dCapsRecord;
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| 97 |
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| 98 |
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| 99 | typedef uint32_t SVGA3dCapPair[2];
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| 100 |
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| 101 |
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| 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 | #if 0
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| 115 | static INLINE SVGA3dCapsRecord *
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| 116 | SVGA3dCaps_FindRecord(const uint32_t *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_t offset;
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| 122 |
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| 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 |
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| 135 | return found;
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| 136 | }
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| 137 | #endif
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| 138 |
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| 139 | #endif // _SVGA3D_CAPS_H_
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