aboutsummaryrefslogtreecommitdiff
path: root/xorg-server/hw/kdrive/ati/ati_dma.h
blob: 4c2092b2c6a6f7038ca0a8fceb80735478134a19 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
/*
 * 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_ */