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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/*
* XXX So far, for GXxor this is about 40% of the speed of SW, but CPU
* utilisation falls from 95% to < 5%.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/**************************************************************************
Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
All Rights Reserved.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sub license, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice (including the
next paragraph) shall be included in all copies or substantial portions
of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
**************************************************************************/
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/i810/i830_accel.c,v 1.8 2003/04/24 18:00:24 eich Exp $ */
/*
* Reformatted with GNU indent (2.2.8), using the following options:
*
* -bad -bap -c41 -cd0 -ncdb -ci6 -cli0 -cp0 -ncs -d0 -di3 -i3 -ip3 -l78
* -lp -npcs -psl -sob -ss -br -ce -sc -hnl
*
* This provides a good match with the original i810 code and preferred
* XFree86 formatting conventions.
*
* When editing this driver, please follow the existing formatting, and edit
* with <TAB> characters expanded at 8-column intervals.
*/
/*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
*
*/
#include "xf86.h"
#include "xaarop.h"
#include "i830.h"
#include "i810_reg.h"
int
I830WaitLpRing(ScrnInfoPtr pScrn, int n, int timeout_millis)
{
I830Ptr pI830 = I830PTR(pScrn);
I830RingBuffer *ring = pI830->LpRing;
int iters = 0;
int start = 0;
int now = 0;
int last_head = 0;
int first = 0;
/* If your system hasn't moved the head pointer in 2 seconds, I'm going to
* call it crashed.
*/
if (timeout_millis == 0)
timeout_millis = 2000;
if (I810_DEBUG & DEBUG_VERBOSE_ACCEL) {
ErrorF("I830WaitLpRing %d\n", n);
first = GetTimeInMillis();
}
while (ring->space < n) {
ring->head = INREG(LP_RING + RING_HEAD) & I830_HEAD_MASK;
ring->space = ring->head - (ring->tail + 8);
if (ring->space < 0)
ring->space += ring->mem.Size;
iters++;
now = GetTimeInMillis();
if (start == 0 || now < start || ring->head != last_head) {
if (I810_DEBUG & DEBUG_VERBOSE_ACCEL)
if (now > start)
ErrorF("space: %d wanted %d\n", ring->space, n);
start = now;
last_head = ring->head;
} else if (now - start > timeout_millis) {
ErrorF("Error in I830WaitLpRing(), now is %d, start is %d\n", now,
start);
I830PrintErrorState(pScrn);
ErrorF("space: %d wanted %d\n", ring->space, n);
#ifdef XF86DRI
if (pI830->directRenderingEnabled) {
DRIUnlock(screenInfo.screens[pScrn->scrnIndex]);
DRICloseScreen(screenInfo.screens[pScrn->scrnIndex]);
}
#endif
#ifdef I830_USE_XAA
pI830->AccelInfoRec = NULL; /* Stops recursive behavior */
#endif
#ifdef I830_USE_EXA
pI830->EXADriverPtr = NULL;
#endif
FatalError("lockup\n");
}
DELAY(10);
}
if (I810_DEBUG & DEBUG_VERBOSE_ACCEL) {
now = GetTimeInMillis();
if (now - first) {
ErrorF("Elapsed %d ms\n", now - first);
ErrorF("space: %d wanted %d\n", ring->space, n);
}
}
return iters;
}
void
I830Sync(ScrnInfoPtr pScrn)
{
I830Ptr pI830 = I830PTR(pScrn);
if (I810_DEBUG & (DEBUG_VERBOSE_ACCEL | DEBUG_VERBOSE_SYNC))
ErrorF("I830Sync\n");
#ifdef XF86DRI
/* VT switching tries to do this.
*/
if (!pI830->LockHeld && pI830->directRenderingEnabled) {
return;
}
#endif
if (pI830->entityPrivate && !pI830->entityPrivate->RingRunning) return;
/* Send a flush instruction and then wait till the ring is empty.
* This is stronger than waiting for the blitter to finish as it also
* flushes the internal graphics caches.
*/
{
BEGIN_LP_RING(2);
OUT_RING(MI_FLUSH | MI_WRITE_DIRTY_STATE | MI_INVALIDATE_MAP_CACHE);
OUT_RING(MI_NOOP); /* pad to quadword */
ADVANCE_LP_RING();
}
I830WaitLpRing(pScrn, pI830->LpRing->mem.Size - 8, 0);
pI830->LpRing->space = pI830->LpRing->mem.Size - 8;
pI830->nextColorExpandBuf = 0;
}
void
I830EmitFlush(ScrnInfoPtr pScrn)
{
I830Ptr pI830 = I830PTR(pScrn);
BEGIN_LP_RING(2);
OUT_RING(MI_FLUSH | MI_WRITE_DIRTY_STATE | MI_INVALIDATE_MAP_CACHE);
OUT_RING(MI_NOOP); /* pad to quadword */
ADVANCE_LP_RING();
}
void
I830SelectBuffer(ScrnInfoPtr pScrn, int buffer)
{
I830Ptr pI830 = I830PTR(pScrn);
switch (buffer) {
#ifdef XF86DRI
case I830_SELECT_BACK:
pI830->bufferOffset = pI830->BackBuffer.Start;
break;
case I830_SELECT_DEPTH:
pI830->bufferOffset = pI830->DepthBuffer.Start;
break;
#endif
default:
case I830_SELECT_FRONT:
pI830->bufferOffset = pScrn->fbOffset;
break;
}
if (I810_DEBUG & DEBUG_VERBOSE_ACCEL)
ErrorF("I830SelectBuffer %d --> offset %x\n",
buffer, pI830->bufferOffset);
}
void
I830RefreshRing(ScrnInfoPtr pScrn)
{
I830Ptr pI830 = I830PTR(pScrn);
pI830->LpRing->head = INREG(LP_RING + RING_HEAD) & I830_HEAD_MASK;
pI830->LpRing->tail = INREG(LP_RING + RING_TAIL);
pI830->LpRing->space = pI830->LpRing->head - (pI830->LpRing->tail + 8);
if (pI830->LpRing->space < 0)
pI830->LpRing->space += pI830->LpRing->mem.Size;
i830MarkSync(pScrn);
}
/* The following function sets up the supported acceleration. Call it
* from the FbInit() function in the SVGA driver, or before ScreenInit
* in a monolithic server.
*/
Bool
I830AccelInit(ScreenPtr pScreen)
{
#ifdef I830_USE_EXA
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
I830Ptr pI830 = I830PTR(pScrn);
if (pI830->useEXA)
return I830EXAInit(pScreen);
#endif
#ifdef I830_USE_XAA
return I830XAAInit(pScreen);
#endif
return FALSE;
}
|
