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/drivers/char/drm/sis_ds.h

https://bitbucket.org/evzijst/gittest
C Header | 145 lines | 49 code | 19 blank | 77 comment | 0 complexity | a6da9d512ff5a85c5116f1ee46cd519c MD5 | raw file
  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
 38typedef unsigned int ITEM_TYPE;
 39
 40typedef struct {
 41	ITEM_TYPE val;
 42	int alloc_next, free_next;
 43} list_item_t;
 44
 45typedef struct {
 46	int alloc;
 47	int free;
 48	int trace;
 49	list_item_t list[SET_SIZE];
 50} set_t;
 51
 52set_t *setInit(void);
 53int setAdd(set_t *set, ITEM_TYPE item);
 54int setDel(set_t *set, ITEM_TYPE item);
 55int setFirst(set_t *set, ITEM_TYPE *item);
 56int setNext(set_t *set, ITEM_TYPE *item);
 57int 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
 83struct 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};
 91typedef struct mem_block_t TMemBlock;
 92typedef struct mem_block_t *PMemBlock;
 93
 94/* a heap is just the first block in a chain */
 95typedef struct mem_block_t memHeap_t;
 96
 97static __inline__ int mmBlockSize(PMemBlock b)
 98{
 99	return b->size;
100}
101
102static __inline__ int mmOffset(PMemBlock b)
103{
104	return b->ofs;
105}
106
107static __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 */
116memHeap_t *mmInit( int ofs, int size );
117
118/*
119 * Allocate 'size' bytes with 2^align2 bytes alignment,
120 * restrict the search to free memory after 'startSearch'
121 * depth and back buffers should be in different 4mb banks
122 * to get better page hits if possible
123 * input:	size = size of block
124 *       	align2 = 2^align2 bytes alignment
125 *		startSearch = linear offset from start of heap to begin search
126 * return: pointer to the allocated block, 0 if error
127 */
128PMemBlock mmAllocMem( memHeap_t *heap, int size, int align2, int startSearch );
129
130/*
131 * Returns 1 if the block 'b' is part of the heap 'heap'
132 */
133int mmBlockInHeap( PMemBlock heap, PMemBlock b );
134
135/*
136 * Free block starts at offset
137 * input: pointer to a block
138 * return: 0 if OK, -1 if error
139 */
140int mmFreeMem( PMemBlock b );
141
142/* For debuging purpose. */
143void mmDumpMemInfo( memHeap_t *mmInit );
144
145#endif /* __SIS_DS_H__ */