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      1 /* sis_ds.h -- Private header for Direct Rendering Manager -*- linux-c -*-
      2  * Created: Mon Jan  4 10:05:05 1999 by sclin (at) 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 (at) 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__ */
    147