7cab70d1cb
instead of ErrorFs for things that are really bad, and put limits on
some loops. Now, sometimes instead of hanging the entire system, we
(mostly-) cleanly drop to console when the card has hung.
100 lines
3.0 KiB
C
100 lines
3.0 KiB
C
/*
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* Copyright © 2004 Eric Anholt
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Eric Anholt not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Eric Anholt makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* ERIC ANHOLT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL ERIC ANHOLT BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Header$ */
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#ifndef _ATI_DMA_H_
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#define _ATI_DMA_H_
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#define DMA_PACKET0(reg, count) \
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(ATI_CCE_PACKET0 | (((count) - 1) << 16) | ((reg) >> 2))
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#define DMA_PACKET1(reg1, reg2) \
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(ATI_CCE_PACKET1 | \
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(((reg2) >> 2) << ATI_CCE_PACKET1_REG_2_SHIFT) | ((reg1) >> 2))
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#define DMA_PACKET3(type, count) \
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((type) | (((count) - 1) << 16))
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#if 0 /* CCE non-debug */
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#define RING_LOCALS CARD32 *__head; int __count
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#define BEGIN_DMA(n) \
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do { \
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if ((atis->indirectBuffer->used + 4*(n)) > \
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atis->indirectBuffer->size) { \
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ATIFlushIndirect(atis, 1); \
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} \
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__head = (CARD32 *)((char *)atis->indirectBuffer->address + \
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atis->indirectBuffer->used); \
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__count = 0; \
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} while (0)
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#define END_DMA() do { \
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atis->indirectBuffer->used += __count * 4; \
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} while (0)
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#else
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#define RING_LOCALS CARD32 *__head; int __count; int __total
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#define BEGIN_DMA(n) \
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do { \
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if ((atis->indirectBuffer->used + 4*(n)) > \
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atis->indirectBuffer->size) { \
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ATIFlushIndirect(atis, 1); \
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} \
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__head = (CARD32 *)((char *)atis->indirectBuffer->address + \
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atis->indirectBuffer->used); \
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__count = 0; \
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__total = n; \
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} while (0)
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#define END_DMA() do { \
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if (__count != __total) \
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FatalError("count != total (%d vs %d) at %s:%d\n", \
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__count, __total, __FILE__, __LINE__); \
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atis->indirectBuffer->used += __count * 4; \
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} while (0)
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#endif
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#define OUT_RING(x) do { \
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__head[__count++] = (x); \
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} while (0)
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#define OUT_RING_F(x) OUT_RING(GET_FLOAT_BITS(x))
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#define OUT_REG(reg, val) \
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do { \
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OUT_RING(DMA_PACKET0(reg, 1)); \
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OUT_RING(val); \
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} while (0)
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dmaBuf *
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ATIGetDMABuffer(ATIScreenInfo *atis);
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void
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ATIFlushIndirect(ATIScreenInfo *atis, Bool discard);
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void
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ATIDMASetup(ScreenPtr pScreen);
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void
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ATIDMATeardown(ScreenPtr pScreen);
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#endif /* _ATI_DMA_H_ */
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