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/*
* Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
* Copyright 2001-2003 S3 Graphics, Inc. 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 SAVAGEDMA
#define SAVAGEDMA
/* Whether use DMA to transfer the 3d commands and data */
/* Need to fix the drm driver first though */
#define SAVAGE_CMD_DMA 0
#define DMA_BUFFER_SIZE (4*1024*1024) /*4M*/
#define MAX_DMA_BUFFER_SIZE (16*1024*1024)
#define DMA_PAGE_SIZE (4*1024) /* savage4 , twister, prosavage,...*/
#define DMA_TRY_COUNT 4
#define MAX_SHADOWCOUNTER (MAX_DMA_BUFFER_SIZE / DMA_PAGE_SIZE)
typedef struct DMABuffer{
drm_savage_alloc_cont_mem_t * buf;
GLuint start, end, allocEnd;
GLuint usingPage; /*current page */
unsigned int kickFlag; /* usingPage is kicked off ?*/
} DMABuffer_t, * DMABufferPtr;
void *savageDMAAlloc (savageContextPtr imesa, GLuint size);
void savageDMACommit (savageContextPtr imesa, void *end);
void savageDMAFlush (savageContextPtr imesa);
int savageDMAInit (savageContextPtr imesa);
int savageDMAClose (savageContextPtr);
/* faked implementation of vertex buffers */
void savageFakeVertices (savageContextPtr imesa, drmBufPtr buffer);
drmBufPtr savageFakeGetBuffer (savageContextPtr imesa);
#endif
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