src/mesa/drivers/dri/savage/savagedma.h

   1 /*
   2  * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
   3  * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the
  13  * next paragraph) shall be included in all copies or substantial portions
  14  * of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #ifndef SAVAGEDMA
  27 #define SAVAGEDMA
  28
  29 /* Whether use DMA to transfer the 3d commands and data */
  30 #define SAVAGE_CMD_DMA 0
  31
  32 #define DMA_BUFFER_SIZE (4*1024*1024) /*4M*/
  33 #define MAX_DMA_BUFFER_SIZE (16*1024*1024)
  34 #define DMA_PAGE_SIZE (4*1024)  /* savage4 , twister, prosavage,...*/
  35 #define DMA_TRY_COUNT 4
  36
  37 #define MAX_SHADOWCOUNTER (MAX_DMA_BUFFER_SIZE / DMA_PAGE_SIZE)
  38 typedef struct DMABuffer{
  39     drm_savage_alloc_cont_mem_t * buf;
  40     GLuint start, end, allocEnd;
  41     GLuint usingPage; /*current page */
  42     unsigned int kickFlag; /* usingPage is kicked off ?*/
  43 } DMABuffer_t, * DMABufferPtr;
  44
  45 void *savageDMAAlloc (savageContextPtr imesa, GLuint size);
  46 void savageDMACommit (savageContextPtr imesa, void *end);
  47 void savageDMAFlush (savageContextPtr imesa);
  48 int savageDMAInit (savageContextPtr imesa);
  49 int savageDMAClose (savageContextPtr);
  50 #endif