FreeBSD/Linux Kernel Cross Reference
sys/dev/drm/sis_ds.h

     /* sis_ds.h -- Private header for Direct Rendering Manager -*- linux-c -*-
      * Created: Mon Jan  4 10:05:05 1999 by sclin@sis.com.tw */
     /*-
      * 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, sublicense,
     * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
     * PRECISION INSIGHT 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.
     * 
     * Authors:
     *    Sung-Ching Lin <sclin@sis.com.tw>
     * 
     * $FreeBSD$
     */
    
    #ifndef __SIS_DS_H__
    #define __SIS_DS_H__
    
    /* Set Data Structure */
    
    #define SET_SIZE 5000
    
    typedef unsigned long 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 *setInit(void);
    int setAdd(set_t *set, ITEM_TYPE item);
    int setDel(set_t *set, ITEM_TYPE item);
    int setFirst(set_t *set, ITEM_TYPE *item);
    int setNext(set_t *set, ITEM_TYPE *item);
    int setDestroy(set_t *set);
    
    /*
     * GLX Hardware Device Driver common code
     * Copyright (C) 1999 Keith Whitwell
     *
     * 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, sublicense,
     * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
     * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS 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.
     *
     */
    
    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 *mmInit( int ofs, int size );
   
   memHeap_t *mmAddRange( memHeap_t *heap,
                          int ofs,
                          int size );
   
   /*
    * Allocate 'size' bytes with 2^align2 bytes alignment,
    * restrict the search to free memory after 'startSearch'
    * depth and back buffers should be in different 4mb banks
    * to get better page hits if possible
    * input:       size = size of block
    *              align2 = 2^align2 bytes alignment
    *              startSearch = linear offset from start of heap to begin search
    * return: pointer to the allocated block, 0 if error
    */
   PMemBlock mmAllocMem( memHeap_t *heap, int size, int align2, int startSearch );
   
   /*
    * Returns 1 if the block 'b' is part of the heap 'heap'
    */
   int mmBlockInHeap( PMemBlock heap, PMemBlock b );
   
   /*
    * Free block starts at offset
    * input: pointer to a block
    * return: 0 if OK, -1 if error
    */
   int mmFreeMem( PMemBlock b );
   
   /*
    * Reserve 'size' bytes block start at offset
    * This is used to prevent allocation of memory already used
    * by the X server for the front buffer, pixmaps, and cursor
    * input: size, offset
    * output: 0 if OK, -1 if error
    */
   int mmReserveMem( memHeap_t *heap, int offset,int size );
   int mmFreeReserved( memHeap_t *heap, int offset );
   
   /*
    * destroy MM
    */
   void mmDestroy( memHeap_t *mmInit );
   
   /* For debuging purpose. */
   void mmDumpMemInfo( memHeap_t *mmInit );
   
   #endif /* __SIS_DS_H__ */

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