1 /* sis_ds.h -- Private header for Direct Rendering Manager -*- linux-c -*-
2 * Created: Mon Jan 4 10:05:05 1999 by sclin@sis.com.tw
3 *
4 * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
5 * All rights reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the next
15 * paragraph) shall be included in all copies or substantial portions of the
16 * Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
22 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
23 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
24 * DEALINGS IN THE SOFTWARE.
25 *
26 * Authors:
27 * Sung-Ching Lin <sclin@sis.com.tw>
28 *
29 */
30
31 #ifndef __SIS_DS_H__
32 #define __SIS_DS_H__
33
34 /* Set Data Structure */
35
36 #define SET_SIZE 5000
37
38 typedef unsigned int ITEM_TYPE;
39
40 typedef struct {
41 ITEM_TYPE val;
42 int alloc_next, free_next;
43 } list_item_t;
44
45 typedef struct {
46 int alloc;
47 int free;
48 int trace;
49 list_item_t list[SET_SIZE];
50 } set_t;
51
52 set_t *setInit(void);
53 int setAdd(set_t *set, ITEM_TYPE item);
54 int setDel(set_t *set, ITEM_TYPE item);
55 int setFirst(set_t *set, ITEM_TYPE *item);
56 int setNext(set_t *set, ITEM_TYPE *item);
57 int setDestroy(set_t *set);
58
59 /*
60 * GLX Hardware Device Driver common code
61 * Copyright (C) 1999 Wittawat Yamwong
62 *
63 * Permission is hereby granted, free of charge, to any person obtaining a
64 * copy of this software and associated documentation files (the "Software"),
65 * to deal in the Software without restriction, including without limitation
66 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
67 * and/or sell copies of the Software, and to permit persons to whom the
68 * Software is furnished to do so, subject to the following conditions:
69 *
70 * The above copyright notice and this permission notice shall be included
71 * in all copies or substantial portions of the Software.
72 *
73 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
74 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
75 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
76 * WITTAWAT YAMWONG, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
77 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
78 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
79 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
80 *
81 */
82
83 struct mem_block_t {
84 struct mem_block_t *next;
85 struct mem_block_t *heap;
86 int ofs,size;
87 int align;
88 unsigned int free:1;
89 unsigned int reserved:1;
90 };
91 typedef struct mem_block_t TMemBlock;
92 typedef struct mem_block_t *PMemBlock;
93
94 /* a heap is just the first block in a chain */
95 typedef struct mem_block_t memHeap_t;
96
97 static __inline__ int mmBlockSize(PMemBlock b)
98 {
99 return b->size;
100 }
101
102 static __inline__ int mmOffset(PMemBlock b)
103 {
104 return b->ofs;
105 }
106
107 static __inline__ void mmMarkReserved(PMemBlock b)
108 {
109 b->reserved = 1;
110 }
111
112 /*
113 * input: total size in bytes
114 * return: a heap pointer if OK, NULL if error
115 */
116 memHeap_t *mmInit( int ofs, int size );
117
118 memHeap_t *mmAddRange( memHeap_t *heap,
119 int ofs,
120 int size );
121
122 /*
123 * Allocate 'size' bytes with 2^align2 bytes alignment,
124 * restrict the search to free memory after 'startSearch'
125 * depth and back buffers should be in different 4mb banks
126 * to get better page hits if possible
127 * input: size = size of block
128 * align2 = 2^align2 bytes alignment
129 * startSearch = linear offset from start of heap to begin search
130 * return: pointer to the allocated block, 0 if error
131 */
132 PMemBlock mmAllocMem( memHeap_t *heap, int size, int align2, int startSearch );
133
134 /*
135 * Returns 1 if the block 'b' is part of the heap 'heap'
136 */
137 int mmBlockInHeap( PMemBlock heap, PMemBlock b );
138
139 /*
140 * Free block starts at offset
141 * input: pointer to a block
142 * return: 0 if OK, -1 if error
143 */
144 int mmFreeMem( PMemBlock b );
145
146 /*
147 * Reserve 'size' bytes block start at offset
148 * This is used to prevent allocation of memory already used
149 * by the X server for the front buffer, pixmaps, and cursor
150 * input: size, offset
151 * output: 0 if OK, -1 if error
152 */
153 int mmReserveMem( memHeap_t *heap, int offset,int size );
154 int mmFreeReserved( memHeap_t *heap, int offset );
155
156 /*
157 * destroy MM
158 */
159 void mmDestroy( memHeap_t *mmInit );
160
161 /* For debuging purpose. */
162 void mmDumpMemInfo( memHeap_t *mmInit );
163
164 #endif /* __SIS_DS_H__ */
165
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