LXR linux-old/drivers/char/drm/sis

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