shared/via_ds.h

/*
 * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
 * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
 * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
 * All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sub license,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */
#ifndef _via_ds_h_ 
#define _via_ds_h_

#include "via.h"
#include "drmP.h"

/* Set Data Structure */
#define SET_SIZE 5000
typedef unsigned int ITEM_TYPE;

typedef struct {
        ITEM_TYPE val;
        int alloc_next, free_next;
} list_item_t;

typedef struct {
        int alloc;
        int free;
        int trace;
        list_item_t list[SET_SIZE];
} set_t;

set_t *via_setInit(void);
int via_setAdd(set_t *set, ITEM_TYPE item);
int via_setDel(set_t *set, ITEM_TYPE item);
int via_setFirst(set_t *set, ITEM_TYPE *item);
int via_setNext(set_t *set, ITEM_TYPE *item);
int via_setDestroy(set_t *set);

#endif


#ifndef MM_INC
#define MM_INC

struct mem_block_t {
        struct mem_block_t *next;
        struct mem_block_t *heap;
        int ofs,size;
        int align;
        int free:1;
        int reserved:1;
};
typedef struct mem_block_t TMemBlock;
typedef struct mem_block_t *PMemBlock;

/* a heap is just the first block in a chain */
typedef struct mem_block_t memHeap_t;

static __inline__ int mmBlockSize(PMemBlock b)
{ return b->size; }

static __inline__ int mmOffset(PMemBlock b)
{ return b->ofs; }

static __inline__ void mmMarkReserved(PMemBlock b)
{ b->reserved = 1; }

/* 
 * input: total size in bytes
 * return: a heap pointer if OK, NULL if error
 */
memHeap_t *via_mmInit(int ofs, int size);


PMemBlock  via_mmAllocMem(memHeap_t *heap, int size, int align2, int startSearch);

/*
 * Free block starts at offset
 * input: pointer to a block
 * return: 0 if OK, -1 if error
 */
int  via_mmFreeMem(PMemBlock b);

/*
 * destroy MM
 */
void via_mmDestroy(memHeap_t *mmInit);

/* For debugging purpose. */
void via_mmDumpMemInfo(memHeap_t *mmInit);

#endif