sys/dev/drm/sis_ds.h

   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 /*
   5  * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
   6  * All rights reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the next
  16  * paragraph) shall be included in all copies or substantial portions of the
  17  * Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  25  * DEALINGS IN THE SOFTWARE.
  26  *
  27  * Authors:
  28  *    Sung-Ching Lin <sclin@sis.com.tw>
  29  *
  30  * $DragonFly: src/sys/dev/drm/sis_ds.h,v 1.1 2008/04/05 18:12:29 hasso Exp $
  31  */
  32
  33 #ifndef __SIS_DS_H__
  34 #define __SIS_DS_H__
  35
  36 /* Set Data Structure */
  37
  38 #define SET_SIZE 5000
  39
  40 typedef unsigned long ITEM_TYPE;
  41
  42 typedef struct {
  43         ITEM_TYPE val;
  44         int alloc_next, free_next;
  45 } list_item_t;
  46
  47 typedef struct {
  48         int alloc;
  49         int free;
  50         int trace;
  51         list_item_t list[SET_SIZE];
  52 } set_t;
  53
  54 set_t *setInit(void);
  55 int setAdd(set_t * set, ITEM_TYPE item);
  56 int setDel(set_t * set, ITEM_TYPE item);
  57 int setFirst(set_t * set, ITEM_TYPE * item);
  58 int setNext(set_t * set, ITEM_TYPE * item);
  59 int setDestroy(set_t * set);
  60
  61 /*
  62  * GLX Hardware Device Driver common code
  63  * Copyright (C) 1999 Wittawat Yamwong
  64  *
  65  * Permission is hereby granted, free of charge, to any person obtaining a
  66  * copy of this software and associated documentation files (the "Software"),
  67  * to deal in the Software without restriction, including without limitation
  68  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  69  * and/or sell copies of the Software, and to permit persons to whom the
  70  * Software is furnished to do so, subject to the following conditions:
  71  *
  72  * The above copyright notice and this permission notice shall be included
  73  * in all copies or substantial portions of the Software.
  74  *
  75  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  76  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  77  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  78  * WITTAWAT YAMWONG, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
  79  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  80  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
  81  * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  82  *
  83  */
  84
  85 struct mem_block_t {
  86         struct mem_block_t *next;
  87         struct mem_block_t *heap;
  88         int ofs, size;
  89         int align;
  90         unsigned int free:1;
  91         unsigned int reserved:1;
  92 };
  93 typedef struct mem_block_t TMemBlock;
  94 typedef struct mem_block_t *PMemBlock;
  95
  96 /* a heap is just the first block in a chain */
  97 typedef struct mem_block_t memHeap_t;
  98
  99 static __inline__ int mmBlockSize(PMemBlock b)
 100 {
 101         return b->size;
 102 }
 103
 104 static __inline__ int mmOffset(PMemBlock b)
 105 {
 106         return b->ofs;
 107 }
 108
 109 static __inline__ void mmMarkReserved(PMemBlock b)
 110 {
 111         b->reserved = 1;
 112 }
 113
 114 /*
 115  * input: total size in bytes
 116  * return: a heap pointer if OK, NULL if error
 117  */
 118 memHeap_t *mmInit(int ofs, int size);
 119
 120 /*
 121  * Allocate 'size' bytes with 2^align2 bytes alignment,
 122  * restrict the search to free memory after 'startSearch'
 123  * depth and back buffers should be in different 4mb banks
 124  * to get better page hits if possible
 125  * input:       size = size of block
 126  *              align2 = 2^align2 bytes alignment
 127  *              startSearch = linear offset from start of heap to begin search
 128  * return: pointer to the allocated block, 0 if error
 129  */
 130 PMemBlock mmAllocMem(memHeap_t * heap, int size, int align2, int startSearch);
 131
 132 /*
 133  * Returns 1 if the block 'b' is part of the heap 'heap'
 134  */
 135 int mmBlockInHeap(PMemBlock heap, PMemBlock b);
 136
 137 /*
 138  * Free block starts at offset
 139  * input: pointer to a block
 140  * return: 0 if OK, -1 if error
 141  */
 142 int mmFreeMem(PMemBlock b);
 143
 144 /* For debuging purpose. */
 145 void mmDumpMemInfo(memHeap_t * mmInit);
 146
 147 #endif                          /* __SIS_DS_H__ */