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Staging: netwave: delete the driver
[linux/fpc-iii.git] / drivers / gpu / drm / nouveau / nouveau_irq.c
blob13e73cee4c44d6fa2764f7ff3ff710148f545c3e
1 /*
2 * Copyright (C) 2006 Ben Skeggs.
3 *
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sublicense, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial
16 * portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 */
27
28 /*
29 * Authors:
30 * Ben Skeggs <darktama@iinet.net.au>
31 */
32
33 #include "drmP.h"
34 #include "drm.h"
35 #include "nouveau_drm.h"
36 #include "nouveau_drv.h"
37 #include "nouveau_reg.h"
38 #include <linux/ratelimit.h>
39
40 /* needed for hotplug irq */
41 #include "nouveau_connector.h"
42 #include "nv50_display.h"
43
44 void
45 nouveau_irq_preinstall(struct drm_device *dev)
46 {
47 struct drm_nouveau_private *dev_priv = dev->dev_private;
48
49 /* Master disable */
50 nv_wr32(dev, NV03_PMC_INTR_EN_0, 0);
51
52 if (dev_priv->card_type == NV_50) {
53 INIT_WORK(&dev_priv->irq_work, nv50_display_irq_handler_bh);
54 INIT_WORK(&dev_priv->hpd_work, nv50_display_irq_hotplug_bh);
55 INIT_LIST_HEAD(&dev_priv->vbl_waiting);
56 }
57 }
58
59 int
60 nouveau_irq_postinstall(struct drm_device *dev)
61 {
62 /* Master enable */
63 nv_wr32(dev, NV03_PMC_INTR_EN_0, NV_PMC_INTR_EN_0_MASTER_ENABLE);
64 return 0;
65 }
66
67 void
68 nouveau_irq_uninstall(struct drm_device *dev)
69 {
70 /* Master disable */
71 nv_wr32(dev, NV03_PMC_INTR_EN_0, 0);
72 }
73
74 static int
75 nouveau_call_method(struct nouveau_channel *chan, int class, int mthd, int data)
76 {
77 struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
78 struct nouveau_pgraph_object_method *grm;
79 struct nouveau_pgraph_object_class *grc;
80
81 grc = dev_priv->engine.graph.grclass;
82 while (grc->id) {
83 if (grc->id == class)
84 break;
85 grc++;
86 }
87
88 if (grc->id != class || !grc->methods)
89 return -ENOENT;
90
91 grm = grc->methods;
92 while (grm->id) {
93 if (grm->id == mthd)
94 return grm->exec(chan, class, mthd, data);
95 grm++;
96 }
97
98 return -ENOENT;
99 }
100
101 static bool
102 nouveau_fifo_swmthd(struct nouveau_channel *chan, uint32_t addr, uint32_t data)
103 {
104 struct drm_device *dev = chan->dev;
105 const int subc = (addr >> 13) & 0x7;
106 const int mthd = addr & 0x1ffc;
107
108 if (mthd == 0x0000) {
109 struct nouveau_gpuobj_ref *ref = NULL;
110
111 if (nouveau_gpuobj_ref_find(chan, data, &ref))
112 return false;
113
114 if (ref->gpuobj->engine != NVOBJ_ENGINE_SW)
115 return false;
116
117 chan->sw_subchannel[subc] = ref->gpuobj->class;
118 nv_wr32(dev, NV04_PFIFO_CACHE1_ENGINE, nv_rd32(dev,
119 NV04_PFIFO_CACHE1_ENGINE) & ~(0xf << subc * 4));
120 return true;
121 }
122
123 /* hw object */
124 if (nv_rd32(dev, NV04_PFIFO_CACHE1_ENGINE) & (1 << (subc*4)))
125 return false;
126
127 if (nouveau_call_method(chan, chan->sw_subchannel[subc], mthd, data))
128 return false;
129
130 return true;
131 }
132
133 static void
134 nouveau_fifo_irq_handler(struct drm_device *dev)
135 {
136 struct drm_nouveau_private *dev_priv = dev->dev_private;
137 struct nouveau_engine *engine = &dev_priv->engine;
138 uint32_t status, reassign;
139 int cnt = 0;
140
141 reassign = nv_rd32(dev, NV03_PFIFO_CACHES) & 1;
142 while ((status = nv_rd32(dev, NV03_PFIFO_INTR_0)) && (cnt++ < 100)) {
143 struct nouveau_channel *chan = NULL;
144 uint32_t chid, get;
145
146 nv_wr32(dev, NV03_PFIFO_CACHES, 0);
147
148 chid = engine->fifo.channel_id(dev);
149 if (chid >= 0 && chid < engine->fifo.channels)
150 chan = dev_priv->fifos[chid];
151 get = nv_rd32(dev, NV03_PFIFO_CACHE1_GET);
152
153 if (status & NV_PFIFO_INTR_CACHE_ERROR) {
154 uint32_t mthd, data;
155 int ptr;
156
157 /* NV_PFIFO_CACHE1_GET actually goes to 0xffc before
158 * wrapping on my G80 chips, but CACHE1 isn't big
159 * enough for this much data.. Tests show that it
160 * wraps around to the start at GET=0x800.. No clue
161 * as to why..
162 */
163 ptr = (get & 0x7ff) >> 2;
164
165 if (dev_priv->card_type < NV_40) {
166 mthd = nv_rd32(dev,
167 NV04_PFIFO_CACHE1_METHOD(ptr));
168 data = nv_rd32(dev,
169 NV04_PFIFO_CACHE1_DATA(ptr));
170 } else {
171 mthd = nv_rd32(dev,
172 NV40_PFIFO_CACHE1_METHOD(ptr));
173 data = nv_rd32(dev,
174 NV40_PFIFO_CACHE1_DATA(ptr));
175 }
176
177 if (!chan || !nouveau_fifo_swmthd(chan, mthd, data)) {
178 NV_INFO(dev, "PFIFO_CACHE_ERROR - Ch %d/%d "
179 "Mthd 0x%04x Data 0x%08x\n",
180 chid, (mthd >> 13) & 7, mthd & 0x1ffc,
181 data);
182 }
183
184 nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_PUSH, 0);
185 nv_wr32(dev, NV03_PFIFO_INTR_0,
186 NV_PFIFO_INTR_CACHE_ERROR);
187
188 nv_wr32(dev, NV03_PFIFO_CACHE1_PUSH0,
189 nv_rd32(dev, NV03_PFIFO_CACHE1_PUSH0) & ~1);
190 nv_wr32(dev, NV03_PFIFO_CACHE1_GET, get + 4);
191 nv_wr32(dev, NV03_PFIFO_CACHE1_PUSH0,
192 nv_rd32(dev, NV03_PFIFO_CACHE1_PUSH0) | 1);
193 nv_wr32(dev, NV04_PFIFO_CACHE1_HASH, 0);
194
195 nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_PUSH,
196 nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_PUSH) | 1);
197 nv_wr32(dev, NV04_PFIFO_CACHE1_PULL0, 1);
198
199 status &= ~NV_PFIFO_INTR_CACHE_ERROR;
200 }
201
202 if (status & NV_PFIFO_INTR_DMA_PUSHER) {
203 NV_INFO(dev, "PFIFO_DMA_PUSHER - Ch %d\n", chid);
204
205 status &= ~NV_PFIFO_INTR_DMA_PUSHER;
206 nv_wr32(dev, NV03_PFIFO_INTR_0,
207 NV_PFIFO_INTR_DMA_PUSHER);
208
209 nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_STATE, 0x00000000);
210 if (nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_PUT) != get)
211 nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_GET,
212 get + 4);
213 }
214
215 if (status & NV_PFIFO_INTR_SEMAPHORE) {
216 uint32_t sem;
217
218 status &= ~NV_PFIFO_INTR_SEMAPHORE;
219 nv_wr32(dev, NV03_PFIFO_INTR_0,
220 NV_PFIFO_INTR_SEMAPHORE);
221
222 sem = nv_rd32(dev, NV10_PFIFO_CACHE1_SEMAPHORE);
223 nv_wr32(dev, NV10_PFIFO_CACHE1_SEMAPHORE, sem | 0x1);
224
225 nv_wr32(dev, NV03_PFIFO_CACHE1_GET, get + 4);
226 nv_wr32(dev, NV04_PFIFO_CACHE1_PULL0, 1);
227 }
228
229 if (status) {
230 NV_INFO(dev, "PFIFO_INTR 0x%08x - Ch %d\n",
231 status, chid);
232 nv_wr32(dev, NV03_PFIFO_INTR_0, status);
233 status = 0;
234 }
235
236 nv_wr32(dev, NV03_PFIFO_CACHES, reassign);
237 }
238
239 if (status) {
240 NV_INFO(dev, "PFIFO still angry after %d spins, halt\n", cnt);
241 nv_wr32(dev, 0x2140, 0);
242 nv_wr32(dev, 0x140, 0);
243 }
244
245 nv_wr32(dev, NV03_PMC_INTR_0, NV_PMC_INTR_0_PFIFO_PENDING);
246 }
247
248 struct nouveau_bitfield_names {
249 uint32_t mask;
250 const char *name;
251 };
252
253 static struct nouveau_bitfield_names nstatus_names[] =
254 {
255 { NV04_PGRAPH_NSTATUS_STATE_IN_USE, "STATE_IN_USE" },
256 { NV04_PGRAPH_NSTATUS_INVALID_STATE, "INVALID_STATE" },
257 { NV04_PGRAPH_NSTATUS_BAD_ARGUMENT, "BAD_ARGUMENT" },
258 { NV04_PGRAPH_NSTATUS_PROTECTION_FAULT, "PROTECTION_FAULT" }
259 };
260
261 static struct nouveau_bitfield_names nstatus_names_nv10[] =
262 {
263 { NV10_PGRAPH_NSTATUS_STATE_IN_USE, "STATE_IN_USE" },
264 { NV10_PGRAPH_NSTATUS_INVALID_STATE, "INVALID_STATE" },
265 { NV10_PGRAPH_NSTATUS_BAD_ARGUMENT, "BAD_ARGUMENT" },
266 { NV10_PGRAPH_NSTATUS_PROTECTION_FAULT, "PROTECTION_FAULT" }
267 };
268
269 static struct nouveau_bitfield_names nsource_names[] =
270 {
271 { NV03_PGRAPH_NSOURCE_NOTIFICATION, "NOTIFICATION" },
272 { NV03_PGRAPH_NSOURCE_DATA_ERROR, "DATA_ERROR" },
273 { NV03_PGRAPH_NSOURCE_PROTECTION_ERROR, "PROTECTION_ERROR" },
274 { NV03_PGRAPH_NSOURCE_RANGE_EXCEPTION, "RANGE_EXCEPTION" },
275 { NV03_PGRAPH_NSOURCE_LIMIT_COLOR, "LIMIT_COLOR" },
276 { NV03_PGRAPH_NSOURCE_LIMIT_ZETA, "LIMIT_ZETA" },
277 { NV03_PGRAPH_NSOURCE_ILLEGAL_MTHD, "ILLEGAL_MTHD" },
278 { NV03_PGRAPH_NSOURCE_DMA_R_PROTECTION, "DMA_R_PROTECTION" },
279 { NV03_PGRAPH_NSOURCE_DMA_W_PROTECTION, "DMA_W_PROTECTION" },
280 { NV03_PGRAPH_NSOURCE_FORMAT_EXCEPTION, "FORMAT_EXCEPTION" },
281 { NV03_PGRAPH_NSOURCE_PATCH_EXCEPTION, "PATCH_EXCEPTION" },
282 { NV03_PGRAPH_NSOURCE_STATE_INVALID, "STATE_INVALID" },
283 { NV03_PGRAPH_NSOURCE_DOUBLE_NOTIFY, "DOUBLE_NOTIFY" },
284 { NV03_PGRAPH_NSOURCE_NOTIFY_IN_USE, "NOTIFY_IN_USE" },
285 { NV03_PGRAPH_NSOURCE_METHOD_CNT, "METHOD_CNT" },
286 { NV03_PGRAPH_NSOURCE_BFR_NOTIFICATION, "BFR_NOTIFICATION" },
287 { NV03_PGRAPH_NSOURCE_DMA_VTX_PROTECTION, "DMA_VTX_PROTECTION" },
288 { NV03_PGRAPH_NSOURCE_DMA_WIDTH_A, "DMA_WIDTH_A" },
289 { NV03_PGRAPH_NSOURCE_DMA_WIDTH_B, "DMA_WIDTH_B" },
290 };
291
292 static void
293 nouveau_print_bitfield_names_(uint32_t value,
294 const struct nouveau_bitfield_names *namelist,
295 const int namelist_len)
296 {
297 /*
298 * Caller must have already printed the KERN_* log level for us.
299 * Also the caller is responsible for adding the newline.
300 */
301 int i;
302 for (i = 0; i < namelist_len; ++i) {
303 uint32_t mask = namelist[i].mask;
304 if (value & mask) {
305 printk(" %s", namelist[i].name);
306 value &= ~mask;
307 }
308 }
309 if (value)
310 printk(" (unknown bits 0x%08x)", value);
311 }
312 #define nouveau_print_bitfield_names(val, namelist) \
313 nouveau_print_bitfield_names_((val), (namelist), ARRAY_SIZE(namelist))
314
315 struct nouveau_enum_names {
316 uint32_t value;
317 const char *name;
318 };
319
320 static void
321 nouveau_print_enum_names_(uint32_t value,
322 const struct nouveau_enum_names *namelist,
323 const int namelist_len)
324 {
325 /*
326 * Caller must have already printed the KERN_* log level for us.
327 * Also the caller is responsible for adding the newline.
328 */
329 int i;
330 for (i = 0; i < namelist_len; ++i) {
331 if (value == namelist[i].value) {
332 printk("%s", namelist[i].name);
333 return;
334 }
335 }
336 printk("unknown value 0x%08x", value);
337 }
338 #define nouveau_print_enum_names(val, namelist) \
339 nouveau_print_enum_names_((val), (namelist), ARRAY_SIZE(namelist))
340
341 static int
342 nouveau_graph_chid_from_grctx(struct drm_device *dev)
343 {
344 struct drm_nouveau_private *dev_priv = dev->dev_private;
345 uint32_t inst;
346 int i;
347
348 if (dev_priv->card_type < NV_40)
349 return dev_priv->engine.fifo.channels;
350 else
351 if (dev_priv->card_type < NV_50) {
352 inst = (nv_rd32(dev, 0x40032c) & 0xfffff) << 4;
353
354 for (i = 0; i < dev_priv->engine.fifo.channels; i++) {
355 struct nouveau_channel *chan = dev_priv->fifos[i];
356
357 if (!chan || !chan->ramin_grctx)
358 continue;
359
360 if (inst == chan->ramin_grctx->instance)
361 break;
362 }
363 } else {
364 inst = (nv_rd32(dev, 0x40032c) & 0xfffff) << 12;
365
366 for (i = 0; i < dev_priv->engine.fifo.channels; i++) {
367 struct nouveau_channel *chan = dev_priv->fifos[i];
368
369 if (!chan || !chan->ramin)
370 continue;
371
372 if (inst == chan->ramin->instance)
373 break;
374 }
375 }
376
377
378 return i;
379 }
380
381 static int
382 nouveau_graph_trapped_channel(struct drm_device *dev, int *channel_ret)
383 {
384 struct drm_nouveau_private *dev_priv = dev->dev_private;
385 struct nouveau_engine *engine = &dev_priv->engine;
386 int channel;
387
388 if (dev_priv->card_type < NV_10)
389 channel = (nv_rd32(dev, NV04_PGRAPH_TRAPPED_ADDR) >> 24) & 0xf;
390 else
391 if (dev_priv->card_type < NV_40)
392 channel = (nv_rd32(dev, NV04_PGRAPH_TRAPPED_ADDR) >> 20) & 0x1f;
393 else
394 channel = nouveau_graph_chid_from_grctx(dev);
395
396 if (channel >= engine->fifo.channels || !dev_priv->fifos[channel]) {
397 NV_ERROR(dev, "AIII, invalid/inactive channel id %d\n", channel);
398 return -EINVAL;
399 }
400
401 *channel_ret = channel;
402 return 0;
403 }
404
405 struct nouveau_pgraph_trap {
406 int channel;
407 int class;
408 int subc, mthd, size;
409 uint32_t data, data2;
410 uint32_t nsource, nstatus;
411 };
412
413 static void
414 nouveau_graph_trap_info(struct drm_device *dev,
415 struct nouveau_pgraph_trap *trap)
416 {
417 struct drm_nouveau_private *dev_priv = dev->dev_private;
418 uint32_t address;
419
420 trap->nsource = trap->nstatus = 0;
421 if (dev_priv->card_type < NV_50) {
422 trap->nsource = nv_rd32(dev, NV03_PGRAPH_NSOURCE);
423 trap->nstatus = nv_rd32(dev, NV03_PGRAPH_NSTATUS);
424 }
425
426 if (nouveau_graph_trapped_channel(dev, &trap->channel))
427 trap->channel = -1;
428 address = nv_rd32(dev, NV04_PGRAPH_TRAPPED_ADDR);
429
430 trap->mthd = address & 0x1FFC;
431 trap->data = nv_rd32(dev, NV04_PGRAPH_TRAPPED_DATA);
432 if (dev_priv->card_type < NV_10) {
433 trap->subc = (address >> 13) & 0x7;
434 } else {
435 trap->subc = (address >> 16) & 0x7;
436 trap->data2 = nv_rd32(dev, NV10_PGRAPH_TRAPPED_DATA_HIGH);
437 }
438
439 if (dev_priv->card_type < NV_10)
440 trap->class = nv_rd32(dev, 0x400180 + trap->subc*4) & 0xFF;
441 else if (dev_priv->card_type < NV_40)
442 trap->class = nv_rd32(dev, 0x400160 + trap->subc*4) & 0xFFF;
443 else if (dev_priv->card_type < NV_50)
444 trap->class = nv_rd32(dev, 0x400160 + trap->subc*4) & 0xFFFF;
445 else
446 trap->class = nv_rd32(dev, 0x400814);
447 }
448
449 static void
450 nouveau_graph_dump_trap_info(struct drm_device *dev, const char *id,
451 struct nouveau_pgraph_trap *trap)
452 {
453 struct drm_nouveau_private *dev_priv = dev->dev_private;
454 uint32_t nsource = trap->nsource, nstatus = trap->nstatus;
455
456 if (dev_priv->card_type < NV_50) {
457 NV_INFO(dev, "%s - nSource:", id);
458 nouveau_print_bitfield_names(nsource, nsource_names);
459 printk(", nStatus:");
460 if (dev_priv->card_type < NV_10)
461 nouveau_print_bitfield_names(nstatus, nstatus_names);
462 else
463 nouveau_print_bitfield_names(nstatus, nstatus_names_nv10);
464 printk("\n");
465 }
466
467 NV_INFO(dev, "%s - Ch %d/%d Class 0x%04x Mthd 0x%04x "
468 "Data 0x%08x:0x%08x\n",
469 id, trap->channel, trap->subc,
470 trap->class, trap->mthd,
471 trap->data2, trap->data);
472 }
473
474 static int
475 nouveau_pgraph_intr_swmthd(struct drm_device *dev,
476 struct nouveau_pgraph_trap *trap)
477 {
478 struct drm_nouveau_private *dev_priv = dev->dev_private;
479
480 if (trap->channel < 0 ||
481 trap->channel >= dev_priv->engine.fifo.channels ||
482 !dev_priv->fifos[trap->channel])
483 return -ENODEV;
484
485 return nouveau_call_method(dev_priv->fifos[trap->channel],
486 trap->class, trap->mthd, trap->data);
487 }
488
489 static inline void
490 nouveau_pgraph_intr_notify(struct drm_device *dev, uint32_t nsource)
491 {
492 struct nouveau_pgraph_trap trap;
493 int unhandled = 0;
494
495 nouveau_graph_trap_info(dev, &trap);
496
497 if (nsource & NV03_PGRAPH_NSOURCE_ILLEGAL_MTHD) {
498 if (nouveau_pgraph_intr_swmthd(dev, &trap))
499 unhandled = 1;
500 } else {
501 unhandled = 1;
502 }
503
504 if (unhandled)
505 nouveau_graph_dump_trap_info(dev, "PGRAPH_NOTIFY", &trap);
506 }
507
508 static DEFINE_RATELIMIT_STATE(nouveau_ratelimit_state, 3 * HZ, 20);
509
510 static int nouveau_ratelimit(void)
511 {
512 return __ratelimit(&nouveau_ratelimit_state);
513 }
514
515
516 static inline void
517 nouveau_pgraph_intr_error(struct drm_device *dev, uint32_t nsource)
518 {
519 struct nouveau_pgraph_trap trap;
520 int unhandled = 0;
521
522 nouveau_graph_trap_info(dev, &trap);
523 trap.nsource = nsource;
524
525 if (nsource & NV03_PGRAPH_NSOURCE_ILLEGAL_MTHD) {
526 if (nouveau_pgraph_intr_swmthd(dev, &trap))
527 unhandled = 1;
528 } else if (nsource & NV03_PGRAPH_NSOURCE_DMA_VTX_PROTECTION) {
529 uint32_t v = nv_rd32(dev, 0x402000);
530 nv_wr32(dev, 0x402000, v);
531
532 /* dump the error anyway for now: it's useful for
533 Gallium development */
534 unhandled = 1;
535 } else {
536 unhandled = 1;
537 }
538
539 if (unhandled && nouveau_ratelimit())
540 nouveau_graph_dump_trap_info(dev, "PGRAPH_ERROR", &trap);
541 }
542
543 static inline void
544 nouveau_pgraph_intr_context_switch(struct drm_device *dev)
545 {
546 struct drm_nouveau_private *dev_priv = dev->dev_private;
547 struct nouveau_engine *engine = &dev_priv->engine;
548 uint32_t chid;
549
550 chid = engine->fifo.channel_id(dev);
551 NV_DEBUG(dev, "PGRAPH context switch interrupt channel %x\n", chid);
552
553 switch (dev_priv->card_type) {
554 case NV_04:
555 nv04_graph_context_switch(dev);
556 break;
557 case NV_10:
558 nv10_graph_context_switch(dev);
559 break;
560 default:
561 NV_ERROR(dev, "Context switch not implemented\n");
562 break;
563 }
564 }
565
566 static void
567 nouveau_pgraph_irq_handler(struct drm_device *dev)
568 {
569 uint32_t status;
570
571 while ((status = nv_rd32(dev, NV03_PGRAPH_INTR))) {
572 uint32_t nsource = nv_rd32(dev, NV03_PGRAPH_NSOURCE);
573
574 if (status & NV_PGRAPH_INTR_NOTIFY) {
575 nouveau_pgraph_intr_notify(dev, nsource);
576
577 status &= ~NV_PGRAPH_INTR_NOTIFY;
578 nv_wr32(dev, NV03_PGRAPH_INTR, NV_PGRAPH_INTR_NOTIFY);
579 }
580
581 if (status & NV_PGRAPH_INTR_ERROR) {
582 nouveau_pgraph_intr_error(dev, nsource);
583
584 status &= ~NV_PGRAPH_INTR_ERROR;
585 nv_wr32(dev, NV03_PGRAPH_INTR, NV_PGRAPH_INTR_ERROR);
586 }
587
588 if (status & NV_PGRAPH_INTR_CONTEXT_SWITCH) {
589 nouveau_pgraph_intr_context_switch(dev);
590
591 status &= ~NV_PGRAPH_INTR_CONTEXT_SWITCH;
592 nv_wr32(dev, NV03_PGRAPH_INTR,
593 NV_PGRAPH_INTR_CONTEXT_SWITCH);
594 }
595
596 if (status) {
597 NV_INFO(dev, "Unhandled PGRAPH_INTR - 0x%08x\n", status);
598 nv_wr32(dev, NV03_PGRAPH_INTR, status);
599 }
600
601 if ((nv_rd32(dev, NV04_PGRAPH_FIFO) & (1 << 0)) == 0)
602 nv_wr32(dev, NV04_PGRAPH_FIFO, 1);
603 }
604
605 nv_wr32(dev, NV03_PMC_INTR_0, NV_PMC_INTR_0_PGRAPH_PENDING);
606 }
607
608 static void
609 nv50_pfb_vm_trap(struct drm_device *dev, int display, const char *name)
610 {
611 struct drm_nouveau_private *dev_priv = dev->dev_private;
612 uint32_t trap[6];
613 int i, ch;
614 uint32_t idx = nv_rd32(dev, 0x100c90);
615 if (idx & 0x80000000) {
616 idx &= 0xffffff;
617 if (display) {
618 for (i = 0; i < 6; i++) {
619 nv_wr32(dev, 0x100c90, idx | i << 24);
620 trap[i] = nv_rd32(dev, 0x100c94);
621 }
622 for (ch = 0; ch < dev_priv->engine.fifo.channels; ch++) {
623 struct nouveau_channel *chan = dev_priv->fifos[ch];
624
625 if (!chan || !chan->ramin)
626 continue;
627
628 if (trap[1] == chan->ramin->instance >> 12)
629 break;
630 }
631 NV_INFO(dev, "%s - VM: Trapped %s at %02x%04x%04x status %08x %08x channel %d\n",
632 name, (trap[5]&0x100?"read":"write"),
633 trap[5]&0xff, trap[4]&0xffff,
634 trap[3]&0xffff, trap[0], trap[2], ch);
635 }
636 nv_wr32(dev, 0x100c90, idx | 0x80000000);
637 } else if (display) {
638 NV_INFO(dev, "%s - no VM fault?\n", name);
639 }
640 }
641
642 static struct nouveau_enum_names nv50_mp_exec_error_names[] =
643 {
644 { 3, "STACK_UNDERFLOW" },
645 { 4, "QUADON_ACTIVE" },
646 { 8, "TIMEOUT" },
647 { 0x10, "INVALID_OPCODE" },
648 { 0x40, "BREAKPOINT" },
649 };
650
651 static void
652 nv50_pgraph_mp_trap(struct drm_device *dev, int tpid, int display)
653 {
654 struct drm_nouveau_private *dev_priv = dev->dev_private;
655 uint32_t units = nv_rd32(dev, 0x1540);
656 uint32_t addr, mp10, status, pc, oplow, ophigh;
657 int i;
658 int mps = 0;
659 for (i = 0; i < 4; i++) {
660 if (!(units & 1 << (i+24)))
661 continue;
662 if (dev_priv->chipset < 0xa0)
663 addr = 0x408200 + (tpid << 12) + (i << 7);
664 else
665 addr = 0x408100 + (tpid << 11) + (i << 7);
666 mp10 = nv_rd32(dev, addr + 0x10);
667 status = nv_rd32(dev, addr + 0x14);
668 if (!status)
669 continue;
670 if (display) {
671 nv_rd32(dev, addr + 0x20);
672 pc = nv_rd32(dev, addr + 0x24);
673 oplow = nv_rd32(dev, addr + 0x70);
674 ophigh= nv_rd32(dev, addr + 0x74);
675 NV_INFO(dev, "PGRAPH_TRAP_MP_EXEC - "
676 "TP %d MP %d: ", tpid, i);
677 nouveau_print_enum_names(status,
678 nv50_mp_exec_error_names);
679 printk(" at %06x warp %d, opcode %08x %08x\n",
680 pc&0xffffff, pc >> 24,
681 oplow, ophigh);
682 }
683 nv_wr32(dev, addr + 0x10, mp10);
684 nv_wr32(dev, addr + 0x14, 0);
685 mps++;
686 }
687 if (!mps && display)
688 NV_INFO(dev, "PGRAPH_TRAP_MP_EXEC - TP %d: "
689 "No MPs claiming errors?\n", tpid);
690 }
691
692 static void
693 nv50_pgraph_tp_trap(struct drm_device *dev, int type, uint32_t ustatus_old,
694 uint32_t ustatus_new, int display, const char *name)
695 {
696 struct drm_nouveau_private *dev_priv = dev->dev_private;
697 int tps = 0;
698 uint32_t units = nv_rd32(dev, 0x1540);
699 int i, r;
700 uint32_t ustatus_addr, ustatus;
701 for (i = 0; i < 16; i++) {
702 if (!(units & (1 << i)))
703 continue;
704 if (dev_priv->chipset < 0xa0)
705 ustatus_addr = ustatus_old + (i << 12);
706 else
707 ustatus_addr = ustatus_new + (i << 11);
708 ustatus = nv_rd32(dev, ustatus_addr) & 0x7fffffff;
709 if (!ustatus)
710 continue;
711 tps++;
712 switch (type) {
713 case 6: /* texture error... unknown for now */
714 nv50_pfb_vm_trap(dev, display, name);
715 if (display) {
716 NV_ERROR(dev, "magic set %d:\n", i);
717 for (r = ustatus_addr + 4; r <= ustatus_addr + 0x10; r += 4)
718 NV_ERROR(dev, "\t0x%08x: 0x%08x\n", r,
719 nv_rd32(dev, r));
720 }
721 break;
722 case 7: /* MP error */
723 if (ustatus & 0x00010000) {
724 nv50_pgraph_mp_trap(dev, i, display);
725 ustatus &= ~0x00010000;
726 }
727 break;
728 case 8: /* TPDMA error */
729 {
730 uint32_t e0c = nv_rd32(dev, ustatus_addr + 4);
731 uint32_t e10 = nv_rd32(dev, ustatus_addr + 8);
732 uint32_t e14 = nv_rd32(dev, ustatus_addr + 0xc);
733 uint32_t e18 = nv_rd32(dev, ustatus_addr + 0x10);
734 uint32_t e1c = nv_rd32(dev, ustatus_addr + 0x14);
735 uint32_t e20 = nv_rd32(dev, ustatus_addr + 0x18);
736 uint32_t e24 = nv_rd32(dev, ustatus_addr + 0x1c);
737 nv50_pfb_vm_trap(dev, display, name);
738 /* 2d engine destination */
739 if (ustatus & 0x00000010) {
740 if (display) {
741 NV_INFO(dev, "PGRAPH_TRAP_TPDMA_2D - TP %d - Unknown fault at address %02x%08x\n",
742 i, e14, e10);
743 NV_INFO(dev, "PGRAPH_TRAP_TPDMA_2D - TP %d - e0c: %08x, e18: %08x, e1c: %08x, e20: %08x, e24: %08x\n",
744 i, e0c, e18, e1c, e20, e24);
745 }
746 ustatus &= ~0x00000010;
747 }
748 /* Render target */
749 if (ustatus & 0x00000040) {
750 if (display) {
751 NV_INFO(dev, "PGRAPH_TRAP_TPDMA_RT - TP %d - Unknown fault at address %02x%08x\n",
752 i, e14, e10);
753 NV_INFO(dev, "PGRAPH_TRAP_TPDMA_RT - TP %d - e0c: %08x, e18: %08x, e1c: %08x, e20: %08x, e24: %08x\n",
754 i, e0c, e18, e1c, e20, e24);
755 }
756 ustatus &= ~0x00000040;
757 }
758 /* CUDA memory: l[], g[] or stack. */
759 if (ustatus & 0x00000080) {
760 if (display) {
761 if (e18 & 0x80000000) {
762 /* g[] read fault? */
763 NV_INFO(dev, "PGRAPH_TRAP_TPDMA - TP %d - Global read fault at address %02x%08x\n",
764 i, e14, e10 | ((e18 >> 24) & 0x1f));
765 e18 &= ~0x1f000000;
766 } else if (e18 & 0xc) {
767 /* g[] write fault? */
768 NV_INFO(dev, "PGRAPH_TRAP_TPDMA - TP %d - Global write fault at address %02x%08x\n",
769 i, e14, e10 | ((e18 >> 7) & 0x1f));
770 e18 &= ~0x00000f80;
771 } else {
772 NV_INFO(dev, "PGRAPH_TRAP_TPDMA - TP %d - Unknown CUDA fault at address %02x%08x\n",
773 i, e14, e10);
774 }
775 NV_INFO(dev, "PGRAPH_TRAP_TPDMA - TP %d - e0c: %08x, e18: %08x, e1c: %08x, e20: %08x, e24: %08x\n",
776 i, e0c, e18, e1c, e20, e24);
777 }
778 ustatus &= ~0x00000080;
779 }
780 }
781 break;
782 }
783 if (ustatus) {
784 if (display)
785 NV_INFO(dev, "%s - TP%d: Unhandled ustatus 0x%08x\n", name, i, ustatus);
786 }
787 nv_wr32(dev, ustatus_addr, 0xc0000000);
788 }
789
790 if (!tps && display)
791 NV_INFO(dev, "%s - No TPs claiming errors?\n", name);
792 }
793
794 static void
795 nv50_pgraph_trap_handler(struct drm_device *dev)
796 {
797 struct nouveau_pgraph_trap trap;
798 uint32_t status = nv_rd32(dev, 0x400108);
799 uint32_t ustatus;
800 int display = nouveau_ratelimit();
801
802
803 if (!status && display) {
804 nouveau_graph_trap_info(dev, &trap);
805 nouveau_graph_dump_trap_info(dev, "PGRAPH_TRAP", &trap);
806 NV_INFO(dev, "PGRAPH_TRAP - no units reporting traps?\n");
807 }
808
809 /* DISPATCH: Relays commands to other units and handles NOTIFY,
810 * COND, QUERY. If you get a trap from it, the command is still stuck
811 * in DISPATCH and you need to do something about it. */
812 if (status & 0x001) {
813 ustatus = nv_rd32(dev, 0x400804) & 0x7fffffff;
814 if (!ustatus && display) {
815 NV_INFO(dev, "PGRAPH_TRAP_DISPATCH - no ustatus?\n");
816 }
817
818 /* Known to be triggered by screwed up NOTIFY and COND... */
819 if (ustatus & 0x00000001) {
820 nv50_pfb_vm_trap(dev, display, "PGRAPH_TRAP_DISPATCH_FAULT");
821 nv_wr32(dev, 0x400500, 0);
822 if (nv_rd32(dev, 0x400808) & 0x80000000) {
823 if (display) {
824 if (nouveau_graph_trapped_channel(dev, &trap.channel))
825 trap.channel = -1;
826 trap.class = nv_rd32(dev, 0x400814);
827 trap.mthd = nv_rd32(dev, 0x400808) & 0x1ffc;
828 trap.subc = (nv_rd32(dev, 0x400808) >> 16) & 0x7;
829 trap.data = nv_rd32(dev, 0x40080c);
830 trap.data2 = nv_rd32(dev, 0x400810);
831 nouveau_graph_dump_trap_info(dev,
832 "PGRAPH_TRAP_DISPATCH_FAULT", &trap);
833 NV_INFO(dev, "PGRAPH_TRAP_DISPATCH_FAULT - 400808: %08x\n", nv_rd32(dev, 0x400808));
834 NV_INFO(dev, "PGRAPH_TRAP_DISPATCH_FAULT - 400848: %08x\n", nv_rd32(dev, 0x400848));
835 }
836 nv_wr32(dev, 0x400808, 0);
837 } else if (display) {
838 NV_INFO(dev, "PGRAPH_TRAP_DISPATCH_FAULT - No stuck command?\n");
839 }
840 nv_wr32(dev, 0x4008e8, nv_rd32(dev, 0x4008e8) & 3);
841 nv_wr32(dev, 0x400848, 0);
842 ustatus &= ~0x00000001;
843 }
844 if (ustatus & 0x00000002) {
845 nv50_pfb_vm_trap(dev, display, "PGRAPH_TRAP_DISPATCH_QUERY");
846 nv_wr32(dev, 0x400500, 0);
847 if (nv_rd32(dev, 0x40084c) & 0x80000000) {
848 if (display) {
849 if (nouveau_graph_trapped_channel(dev, &trap.channel))
850 trap.channel = -1;
851 trap.class = nv_rd32(dev, 0x400814);
852 trap.mthd = nv_rd32(dev, 0x40084c) & 0x1ffc;
853 trap.subc = (nv_rd32(dev, 0x40084c) >> 16) & 0x7;
854 trap.data = nv_rd32(dev, 0x40085c);
855 trap.data2 = 0;
856 nouveau_graph_dump_trap_info(dev,
857 "PGRAPH_TRAP_DISPATCH_QUERY", &trap);
858 NV_INFO(dev, "PGRAPH_TRAP_DISPATCH_QUERY - 40084c: %08x\n", nv_rd32(dev, 0x40084c));
859 }
860 nv_wr32(dev, 0x40084c, 0);
861 } else if (display) {
862 NV_INFO(dev, "PGRAPH_TRAP_DISPATCH_QUERY - No stuck command?\n");
863 }
864 ustatus &= ~0x00000002;
865 }
866 if (ustatus && display)
867 NV_INFO(dev, "PGRAPH_TRAP_DISPATCH - Unhandled ustatus 0x%08x\n", ustatus);
868 nv_wr32(dev, 0x400804, 0xc0000000);
869 nv_wr32(dev, 0x400108, 0x001);
870 status &= ~0x001;
871 }
872
873 /* TRAPs other than dispatch use the "normal" trap regs. */
874 if (status && display) {
875 nouveau_graph_trap_info(dev, &trap);
876 nouveau_graph_dump_trap_info(dev,
877 "PGRAPH_TRAP", &trap);
878 }
879
880 /* M2MF: Memory to memory copy engine. */
881 if (status & 0x002) {
882 ustatus = nv_rd32(dev, 0x406800) & 0x7fffffff;
883 if (!ustatus && display) {
884 NV_INFO(dev, "PGRAPH_TRAP_M2MF - no ustatus?\n");
885 }
886 if (ustatus & 0x00000001) {
887 nv50_pfb_vm_trap(dev, display, "PGRAPH_TRAP_M2MF_NOTIFY");
888 ustatus &= ~0x00000001;
889 }
890 if (ustatus & 0x00000002) {
891 nv50_pfb_vm_trap(dev, display, "PGRAPH_TRAP_M2MF_IN");
892 ustatus &= ~0x00000002;
893 }
894 if (ustatus & 0x00000004) {
895 nv50_pfb_vm_trap(dev, display, "PGRAPH_TRAP_M2MF_OUT");
896 ustatus &= ~0x00000004;
897 }
898 NV_INFO (dev, "PGRAPH_TRAP_M2MF - %08x %08x %08x %08x\n",
899 nv_rd32(dev, 0x406804),
900 nv_rd32(dev, 0x406808),
901 nv_rd32(dev, 0x40680c),
902 nv_rd32(dev, 0x406810));
903 if (ustatus && display)
904 NV_INFO(dev, "PGRAPH_TRAP_M2MF - Unhandled ustatus 0x%08x\n", ustatus);
905 /* No sane way found yet -- just reset the bugger. */
906 nv_wr32(dev, 0x400040, 2);
907 nv_wr32(dev, 0x400040, 0);
908 nv_wr32(dev, 0x406800, 0xc0000000);
909 nv_wr32(dev, 0x400108, 0x002);
910 status &= ~0x002;
911 }
912
913 /* VFETCH: Fetches data from vertex buffers. */
914 if (status & 0x004) {
915 ustatus = nv_rd32(dev, 0x400c04) & 0x7fffffff;
916 if (!ustatus && display) {
917 NV_INFO(dev, "PGRAPH_TRAP_VFETCH - no ustatus?\n");
918 }
919 if (ustatus & 0x00000001) {
920 nv50_pfb_vm_trap(dev, display, "PGRAPH_TRAP_VFETCH_FAULT");
921 NV_INFO (dev, "PGRAPH_TRAP_VFETCH_FAULT - %08x %08x %08x %08x\n",
922 nv_rd32(dev, 0x400c00),
923 nv_rd32(dev, 0x400c08),
924 nv_rd32(dev, 0x400c0c),
925 nv_rd32(dev, 0x400c10));
926 ustatus &= ~0x00000001;
927 }
928 if (ustatus && display)
929 NV_INFO(dev, "PGRAPH_TRAP_VFETCH - Unhandled ustatus 0x%08x\n", ustatus);
930 nv_wr32(dev, 0x400c04, 0xc0000000);
931 nv_wr32(dev, 0x400108, 0x004);
932 status &= ~0x004;
933 }
934
935 /* STRMOUT: DirectX streamout / OpenGL transform feedback. */
936 if (status & 0x008) {
937 ustatus = nv_rd32(dev, 0x401800) & 0x7fffffff;
938 if (!ustatus && display) {
939 NV_INFO(dev, "PGRAPH_TRAP_STRMOUT - no ustatus?\n");
940 }
941 if (ustatus & 0x00000001) {
942 nv50_pfb_vm_trap(dev, display, "PGRAPH_TRAP_STRMOUT_FAULT");
943 NV_INFO (dev, "PGRAPH_TRAP_STRMOUT_FAULT - %08x %08x %08x %08x\n",
944 nv_rd32(dev, 0x401804),
945 nv_rd32(dev, 0x401808),
946 nv_rd32(dev, 0x40180c),
947 nv_rd32(dev, 0x401810));
948 ustatus &= ~0x00000001;
949 }
950 if (ustatus && display)
951 NV_INFO(dev, "PGRAPH_TRAP_STRMOUT - Unhandled ustatus 0x%08x\n", ustatus);
952 /* No sane way found yet -- just reset the bugger. */
953 nv_wr32(dev, 0x400040, 0x80);
954 nv_wr32(dev, 0x400040, 0);
955 nv_wr32(dev, 0x401800, 0xc0000000);
956 nv_wr32(dev, 0x400108, 0x008);
957 status &= ~0x008;
958 }
959
960 /* CCACHE: Handles code and c[] caches and fills them. */
961 if (status & 0x010) {
962 ustatus = nv_rd32(dev, 0x405018) & 0x7fffffff;
963 if (!ustatus && display) {
964 NV_INFO(dev, "PGRAPH_TRAP_CCACHE - no ustatus?\n");
965 }
966 if (ustatus & 0x00000001) {
967 nv50_pfb_vm_trap(dev, display, "PGRAPH_TRAP_CCACHE_FAULT");
968 NV_INFO (dev, "PGRAPH_TRAP_CCACHE_FAULT - %08x %08x %08x %08x %08x %08x %08x\n",
969 nv_rd32(dev, 0x405800),
970 nv_rd32(dev, 0x405804),
971 nv_rd32(dev, 0x405808),
972 nv_rd32(dev, 0x40580c),
973 nv_rd32(dev, 0x405810),
974 nv_rd32(dev, 0x405814),
975 nv_rd32(dev, 0x40581c));
976 ustatus &= ~0x00000001;
977 }
978 if (ustatus && display)
979 NV_INFO(dev, "PGRAPH_TRAP_CCACHE - Unhandled ustatus 0x%08x\n", ustatus);
980 nv_wr32(dev, 0x405018, 0xc0000000);
981 nv_wr32(dev, 0x400108, 0x010);
982 status &= ~0x010;
983 }
984
985 /* Unknown, not seen yet... 0x402000 is the only trap status reg
986 * remaining, so try to handle it anyway. Perhaps related to that
987 * unknown DMA slot on tesla? */
988 if (status & 0x20) {
989 nv50_pfb_vm_trap(dev, display, "PGRAPH_TRAP_UNKC04");
990 ustatus = nv_rd32(dev, 0x402000) & 0x7fffffff;
991 if (display)
992 NV_INFO(dev, "PGRAPH_TRAP_UNKC04 - Unhandled ustatus 0x%08x\n", ustatus);
993 nv_wr32(dev, 0x402000, 0xc0000000);
994 /* no status modifiction on purpose */
995 }
996
997 /* TEXTURE: CUDA texturing units */
998 if (status & 0x040) {
999 nv50_pgraph_tp_trap (dev, 6, 0x408900, 0x408600, display,
1000 "PGRAPH_TRAP_TEXTURE");
1001 nv_wr32(dev, 0x400108, 0x040);
1002 status &= ~0x040;
1003 }
1004
1005 /* MP: CUDA execution engines. */
1006 if (status & 0x080) {
1007 nv50_pgraph_tp_trap (dev, 7, 0x408314, 0x40831c, display,
1008 "PGRAPH_TRAP_MP");
1009 nv_wr32(dev, 0x400108, 0x080);
1010 status &= ~0x080;
1011 }
1012
1013 /* TPDMA: Handles TP-initiated uncached memory accesses:
1014 * l[], g[], stack, 2d surfaces, render targets. */
1015 if (status & 0x100) {
1016 nv50_pgraph_tp_trap (dev, 8, 0x408e08, 0x408708, display,
1017 "PGRAPH_TRAP_TPDMA");
1018 nv_wr32(dev, 0x400108, 0x100);
1019 status &= ~0x100;
1020 }
1021
1022 if (status) {
1023 if (display)
1024 NV_INFO(dev, "PGRAPH_TRAP - Unknown trap 0x%08x\n",
1025 status);
1026 nv_wr32(dev, 0x400108, status);
1027 }
1028 }
1029
1030 /* There must be a *lot* of these. Will take some time to gather them up. */
1031 static struct nouveau_enum_names nv50_data_error_names[] =
1032 {
1033 { 4, "INVALID_VALUE" },
1034 { 5, "INVALID_ENUM" },
1035 { 8, "INVALID_OBJECT" },
1036 { 0xc, "INVALID_BITFIELD" },
1037 { 0x28, "MP_NO_REG_SPACE" },
1038 { 0x2b, "MP_BLOCK_SIZE_MISMATCH" },
1039 };
1040
1041 static void
1042 nv50_pgraph_irq_handler(struct drm_device *dev)
1043 {
1044 struct nouveau_pgraph_trap trap;
1045 int unhandled = 0;
1046 uint32_t status;
1047
1048 while ((status = nv_rd32(dev, NV03_PGRAPH_INTR))) {
1049 /* NOTIFY: You've set a NOTIFY an a command and it's done. */
1050 if (status & 0x00000001) {
1051 nouveau_graph_trap_info(dev, &trap);
1052 if (nouveau_ratelimit())
1053 nouveau_graph_dump_trap_info(dev,
1054 "PGRAPH_NOTIFY", &trap);
1055 status &= ~0x00000001;
1056 nv_wr32(dev, NV03_PGRAPH_INTR, 0x00000001);
1057 }
1058
1059 /* COMPUTE_QUERY: Purpose and exact cause unknown, happens
1060 * when you write 0x200 to 0x50c0 method 0x31c. */
1061 if (status & 0x00000002) {
1062 nouveau_graph_trap_info(dev, &trap);
1063 if (nouveau_ratelimit())
1064 nouveau_graph_dump_trap_info(dev,
1065 "PGRAPH_COMPUTE_QUERY", &trap);
1066 status &= ~0x00000002;
1067 nv_wr32(dev, NV03_PGRAPH_INTR, 0x00000002);
1068 }
1069
1070 /* Unknown, never seen: 0x4 */
1071
1072 /* ILLEGAL_MTHD: You used a wrong method for this class. */
1073 if (status & 0x00000010) {
1074 nouveau_graph_trap_info(dev, &trap);
1075 if (nouveau_pgraph_intr_swmthd(dev, &trap))
1076 unhandled = 1;
1077 if (unhandled && nouveau_ratelimit())
1078 nouveau_graph_dump_trap_info(dev,
1079 "PGRAPH_ILLEGAL_MTHD", &trap);
1080 status &= ~0x00000010;
1081 nv_wr32(dev, NV03_PGRAPH_INTR, 0x00000010);
1082 }
1083
1084 /* ILLEGAL_CLASS: You used a wrong class. */
1085 if (status & 0x00000020) {
1086 nouveau_graph_trap_info(dev, &trap);
1087 if (nouveau_ratelimit())
1088 nouveau_graph_dump_trap_info(dev,
1089 "PGRAPH_ILLEGAL_CLASS", &trap);
1090 status &= ~0x00000020;
1091 nv_wr32(dev, NV03_PGRAPH_INTR, 0x00000020);
1092 }
1093
1094 /* DOUBLE_NOTIFY: You tried to set a NOTIFY on another NOTIFY. */
1095 if (status & 0x00000040) {
1096 nouveau_graph_trap_info(dev, &trap);
1097 if (nouveau_ratelimit())
1098 nouveau_graph_dump_trap_info(dev,
1099 "PGRAPH_DOUBLE_NOTIFY", &trap);
1100 status &= ~0x00000040;
1101 nv_wr32(dev, NV03_PGRAPH_INTR, 0x00000040);
1102 }
1103
1104 /* CONTEXT_SWITCH: PGRAPH needs us to load a new context */
1105 if (status & 0x00001000) {
1106 nv_wr32(dev, 0x400500, 0x00000000);
1107 nv_wr32(dev, NV03_PGRAPH_INTR,
1108 NV_PGRAPH_INTR_CONTEXT_SWITCH);
1109 nv_wr32(dev, NV40_PGRAPH_INTR_EN, nv_rd32(dev,
1110 NV40_PGRAPH_INTR_EN) &
1111 ~NV_PGRAPH_INTR_CONTEXT_SWITCH);
1112 nv_wr32(dev, 0x400500, 0x00010001);
1113
1114 nv50_graph_context_switch(dev);
1115
1116 status &= ~NV_PGRAPH_INTR_CONTEXT_SWITCH;
1117 }
1118
1119 /* BUFFER_NOTIFY: Your m2mf transfer finished */
1120 if (status & 0x00010000) {
1121 nouveau_graph_trap_info(dev, &trap);
1122 if (nouveau_ratelimit())
1123 nouveau_graph_dump_trap_info(dev,
1124 "PGRAPH_BUFFER_NOTIFY", &trap);
1125 status &= ~0x00010000;
1126 nv_wr32(dev, NV03_PGRAPH_INTR, 0x00010000);
1127 }
1128
1129 /* DATA_ERROR: Invalid value for this method, or invalid
1130 * state in current PGRAPH context for this operation */
1131 if (status & 0x00100000) {
1132 nouveau_graph_trap_info(dev, &trap);
1133 if (nouveau_ratelimit()) {
1134 nouveau_graph_dump_trap_info(dev,
1135 "PGRAPH_DATA_ERROR", &trap);
1136 NV_INFO (dev, "PGRAPH_DATA_ERROR - ");
1137 nouveau_print_enum_names(nv_rd32(dev, 0x400110),
1138 nv50_data_error_names);
1139 printk("\n");
1140 }
1141 status &= ~0x00100000;
1142 nv_wr32(dev, NV03_PGRAPH_INTR, 0x00100000);
1143 }
1144
1145 /* TRAP: Something bad happened in the middle of command
1146 * execution. Has a billion types, subtypes, and even
1147 * subsubtypes. */
1148 if (status & 0x00200000) {
1149 nv50_pgraph_trap_handler(dev);
1150 status &= ~0x00200000;
1151 nv_wr32(dev, NV03_PGRAPH_INTR, 0x00200000);
1152 }
1153
1154 /* Unknown, never seen: 0x00400000 */
1155
1156 /* SINGLE_STEP: Happens on every method if you turned on
1157 * single stepping in 40008c */
1158 if (status & 0x01000000) {
1159 nouveau_graph_trap_info(dev, &trap);
1160 if (nouveau_ratelimit())
1161 nouveau_graph_dump_trap_info(dev,
1162 "PGRAPH_SINGLE_STEP", &trap);
1163 status &= ~0x01000000;
1164 nv_wr32(dev, NV03_PGRAPH_INTR, 0x01000000);
1165 }
1166
1167 /* 0x02000000 happens when you pause a ctxprog...
1168 * but the only way this can happen that I know is by
1169 * poking the relevant MMIO register, and we don't
1170 * do that. */
1171
1172 if (status) {
1173 NV_INFO(dev, "Unhandled PGRAPH_INTR - 0x%08x\n",
1174 status);
1175 nv_wr32(dev, NV03_PGRAPH_INTR, status);
1176 }
1177
1178 {
1179 const int isb = (1 << 16) | (1 << 0);
1180
1181 if ((nv_rd32(dev, 0x400500) & isb) != isb)
1182 nv_wr32(dev, 0x400500,
1183 nv_rd32(dev, 0x400500) | isb);
1184 }
1185 }
1186
1187 nv_wr32(dev, NV03_PMC_INTR_0, NV_PMC_INTR_0_PGRAPH_PENDING);
1188 if (nv_rd32(dev, 0x400824) & (1 << 31))
1189 nv_wr32(dev, 0x400824, nv_rd32(dev, 0x400824) & ~(1 << 31));
1190 }
1191
1192 static void
1193 nouveau_crtc_irq_handler(struct drm_device *dev, int crtc)
1194 {
1195 if (crtc & 1)
1196 nv_wr32(dev, NV_CRTC0_INTSTAT, NV_CRTC_INTR_VBLANK);
1197
1198 if (crtc & 2)
1199 nv_wr32(dev, NV_CRTC1_INTSTAT, NV_CRTC_INTR_VBLANK);
1200 }
1201
1202 irqreturn_t
1203 nouveau_irq_handler(DRM_IRQ_ARGS)
1204 {
1205 struct drm_device *dev = (struct drm_device *)arg;
1206 struct drm_nouveau_private *dev_priv = dev->dev_private;
1207 uint32_t status, fbdev_flags = 0;
1208 unsigned long flags;
1209
1210 status = nv_rd32(dev, NV03_PMC_INTR_0);
1211 if (!status)
1212 return IRQ_NONE;
1213
1214 spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
1215
1216 if (dev_priv->fbdev_info) {
1217 fbdev_flags = dev_priv->fbdev_info->flags;
1218 dev_priv->fbdev_info->flags |= FBINFO_HWACCEL_DISABLED;
1219 }
1220
1221 if (status & NV_PMC_INTR_0_PFIFO_PENDING) {
1222 nouveau_fifo_irq_handler(dev);
1223 status &= ~NV_PMC_INTR_0_PFIFO_PENDING;
1224 }
1225
1226 if (status & NV_PMC_INTR_0_PGRAPH_PENDING) {
1227 if (dev_priv->card_type >= NV_50)
1228 nv50_pgraph_irq_handler(dev);
1229 else
1230 nouveau_pgraph_irq_handler(dev);
1231
1232 status &= ~NV_PMC_INTR_0_PGRAPH_PENDING;
1233 }
1234
1235 if (status & NV_PMC_INTR_0_CRTCn_PENDING) {
1236 nouveau_crtc_irq_handler(dev, (status>>24)&3);
1237 status &= ~NV_PMC_INTR_0_CRTCn_PENDING;
1238 }
1239
1240 if (status & (NV_PMC_INTR_0_NV50_DISPLAY_PENDING |
1241 NV_PMC_INTR_0_NV50_I2C_PENDING)) {
1242 nv50_display_irq_handler(dev);
1243 status &= ~(NV_PMC_INTR_0_NV50_DISPLAY_PENDING |
1244 NV_PMC_INTR_0_NV50_I2C_PENDING);
1245 }
1246
1247 if (status)
1248 NV_ERROR(dev, "Unhandled PMC INTR status bits 0x%08x\n", status);
1249
1250 if (dev_priv->fbdev_info)
1251 dev_priv->fbdev_info->flags = fbdev_flags;
1252
1253 spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
1254
1255 return IRQ_HANDLED;
1256 }
Linux with added FPC-III support