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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.
*/
#ifndef _ATI_DMA_H_
#define _ATI_DMA_H_
#define CCE_DEBUG 1
#if !CCE_DEBUG
#define DMA_PACKET0(reg, count) \
(ATI_CCE_PACKET0 | (((count) - 1) << 16) | ((reg) >> 2))
#else
#define DMA_PACKET0(reg, count) \
(__packet0count = (count), __reg = (reg), \
ATI_CCE_PACKET0 | (((count) - 1) << 16) | ((reg) >> 2))
#endif
#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 !CCE_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, __total, __reg, __packet0count
#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; \
__reg = 0; \
__packet0count = 0; \
} 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(val) do { \
__head[__count++] = (val); \
} while (0)
#define OUT_RING_REG(reg, val) do { \
if (__reg != reg) \
FatalError("unexpected reg (0x%x vs 0x%x) at %s:%d\n", \
reg, __reg, __FILE__, __LINE__); \
if (__packet0count-- <= 0) \
FatalError("overrun of packet0 at %s:%d\n", \
__FILE__, __LINE__); \
__head[__count++] = (val); \
__reg += 4; \
} 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)
#define TIMEOUT_LOCALS struct timeval _target, _curtime
static inline Bool
tv_le(struct timeval *tv1, struct timeval *tv2)
{
if (tv1->tv_sec < tv2->tv_sec ||
(tv1->tv_sec == tv2->tv_sec && tv1->tv_usec < tv2->tv_usec))
return TRUE;
else
return FALSE;
}
#define WHILE_NOT_TIMEOUT(_timeout) \
gettimeofday(&_target, NULL); \
_target.tv_usec += ((_timeout) * 1000000); \
_target.tv_sec += _target.tv_usec / 1000000; \
_target.tv_usec = _target.tv_usec % 1000000; \
while (gettimeofday(&_curtime, NULL), tv_le(&_curtime, &_target))
#define TIMEDOUT() (!tv_le(&_curtime, &_target))
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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