2 * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
3 * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
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12 * The above copyright notice and this permission notice (including the
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21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
29 /* Whether use DMA to transfer the 3d commands and data */
30 /* Need to fix the drm driver first though */
31 #define SAVAGE_CMD_DMA 0
33 #define DMA_BUFFER_SIZE (4*1024*1024) /*4M*/
34 #define MAX_DMA_BUFFER_SIZE (16*1024*1024)
35 #define DMA_PAGE_SIZE (4*1024) /* savage4 , twister, prosavage,...*/
36 #define DMA_TRY_COUNT 4
38 #define MAX_SHADOWCOUNTER (MAX_DMA_BUFFER_SIZE / DMA_PAGE_SIZE)
39 typedef struct DMABuffer
{
40 drm_savage_alloc_cont_mem_t
* buf
;
41 GLuint start
, end
, allocEnd
;
42 GLuint usingPage
; /*current page */
43 unsigned int kickFlag
; /* usingPage is kicked off ?*/
44 } DMABuffer_t
, * DMABufferPtr
;
46 void *savageDMAAlloc (savageContextPtr imesa
, GLuint size
);
47 void savageDMACommit (savageContextPtr imesa
, void *end
);
48 void savageDMAFlush (savageContextPtr imesa
);
49 int savageDMAInit (savageContextPtr imesa
);
50 int savageDMAClose (savageContextPtr
);
52 /* faked implementation of vertex buffers */
53 void savageFakeVertices (savageContextPtr imesa
, drmBufPtr buffer
);
54 drmBufPtr
savageFakeGetBuffer (savageContextPtr imesa
);