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