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