mirror of
https://gitlab.freedesktop.org/mesa/drm.git
synced 2026-05-21 15:48:14 +02:00
4db40c2a8b
Added code to emit all driver state, including context, texture and warp
states.
Added a hack for carrying state along with a dma buffer. Hopefully Jeff
will have a better solution for this problem.
57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
#ifndef MGA_DMA_H
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#define MGA_DMA_H
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#define DWGREG0 0x1c00
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#define DWGREG0_END 0x1dff
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#define DWGREG1 0x2c00
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#define DWGREG1_END 0x2dff
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#define ISREG0(r) (r >= DWGREG0 && r <= DWGREG0_END)
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#define ADRINDEX0(r) (u8)((r - DWGREG0) >> 2)
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#define ADRINDEX1(r) (u8)(((r - DWGREG1) >> 2) | 0x80)
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#define ADRINDEX(r) (ISREG0(r) ? ADRINDEX0(r) : ADRINDEX1(r))
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/* Macros for inserting commands into a secondary dma buffer.
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*/
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#define DMALOCALS u8 tempIndex[4]; u32 *dma_ptr; \
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int outcount, num_dwords;
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#define DMAGETPTR(buf) do { \
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dma_ptr = (u32 *)((u8 *)buf->address + buf->used); \
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outcount = 0; \
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num_dwords = buf->used / 4; \
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} while(0)
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#define DMAADVANCE(buf) do { \
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buf->used = num_dwords * 4; \
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} while(0)
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#define DMAOUTREG(reg, val) do { \
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tempIndex[outcount]=ADRINDEX(reg); \
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dma_ptr[++outcount] = val; \
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if (outcount == 4) { \
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outcount = 0; \
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dma_ptr[0] = *(u32 *)tempIndex; \
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dma_ptr+=5; \
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num_dwords += 5; \
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} \
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}while (0)
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/* Not used for emitting state, as we assume the state will always fit
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* in a single buffer.
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*
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* For clip/swap -- choose a maximum number of cliprects so that a single
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* buffer is always sufficient?
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*
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* For vertex cliprects -- ???
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*/
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#define CHECK_OVERFLOW(length) do { \
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if (buf->total - buf->used < length * 4) \
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mga_prim_overflow(dev); \
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}while(0)
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#endif
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