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 "nouveau_swmthd.h"
39
40 void
nouveau_irq_preinstall(struct drm_device * dev)41 nouveau_irq_preinstall(struct drm_device *dev)
42 {
43 struct drm_nouveau_private *dev_priv = dev->dev_private;
44
45 /* Master disable */
46 NV_WRITE(NV03_PMC_INTR_EN_0, 0);
47 }
48
49 int
nouveau_irq_postinstall(struct drm_device * dev)50 nouveau_irq_postinstall(struct drm_device *dev)
51 {
52 struct drm_nouveau_private *dev_priv = dev->dev_private;
53
54 /* Master enable */
55 NV_WRITE(NV03_PMC_INTR_EN_0, NV_PMC_INTR_EN_0_MASTER_ENABLE);
56
57 return 0;
58 }
59
60 void
nouveau_irq_uninstall(struct drm_device * dev)61 nouveau_irq_uninstall(struct drm_device *dev)
62 {
63 struct drm_nouveau_private *dev_priv = dev->dev_private;
64
65 /* Master disable */
66 NV_WRITE(NV03_PMC_INTR_EN_0, 0);
67 }
68
69 static void
nouveau_fifo_irq_handler(struct drm_device * dev)70 nouveau_fifo_irq_handler(struct drm_device *dev)
71 {
72 struct drm_nouveau_private *dev_priv = dev->dev_private;
73 struct nouveau_engine *engine = &dev_priv->Engine;
74 uint32_t status, reassign;
75
76 reassign = NV_READ(NV03_PFIFO_CACHES) & 1;
77 while ((status = NV_READ(NV03_PFIFO_INTR_0))) {
78 uint32_t chid, get;
79
80 NV_WRITE(NV03_PFIFO_CACHES, 0);
81
82 chid = engine->fifo.channel_id(dev);
83 get = NV_READ(NV03_PFIFO_CACHE1_GET);
84
85 if (status & NV_PFIFO_INTR_CACHE_ERROR) {
86 uint32_t mthd, data;
87 int ptr;
88
89 ptr = get >> 2;
90 if (dev_priv->card_type < NV_40) {
91 mthd = NV_READ(NV04_PFIFO_CACHE1_METHOD(ptr));
92 data = NV_READ(NV04_PFIFO_CACHE1_DATA(ptr));
93 } else {
94 mthd = NV_READ(NV40_PFIFO_CACHE1_METHOD(ptr));
95 data = NV_READ(NV40_PFIFO_CACHE1_DATA(ptr));
96 }
97
98 DRM_INFO("PFIFO_CACHE_ERROR - "
99 "Ch %d/%d Mthd 0x%04x Data 0x%08x\n",
100 chid, (mthd >> 13) & 7, mthd & 0x1ffc, data);
101
102 NV_WRITE(NV03_PFIFO_CACHE1_GET, get + 4);
103 NV_WRITE(NV04_PFIFO_CACHE1_PULL0, 1);
104
105 status &= ~NV_PFIFO_INTR_CACHE_ERROR;
106 NV_WRITE(NV03_PFIFO_INTR_0, NV_PFIFO_INTR_CACHE_ERROR);
107 }
108
109 if (status & NV_PFIFO_INTR_DMA_PUSHER) {
110 DRM_INFO("PFIFO_DMA_PUSHER - Ch %d\n", chid);
111
112 status &= ~NV_PFIFO_INTR_DMA_PUSHER;
113 NV_WRITE(NV03_PFIFO_INTR_0, NV_PFIFO_INTR_DMA_PUSHER);
114
115 NV_WRITE(NV04_PFIFO_CACHE1_DMA_STATE, 0x00000000);
116 if (NV_READ(NV04_PFIFO_CACHE1_DMA_PUT) != get)
117 NV_WRITE(NV04_PFIFO_CACHE1_DMA_GET, get + 4);
118 }
119
120 if (status) {
121 DRM_INFO("Unhandled PFIFO_INTR - 0x%08x\n", status);
122 NV_WRITE(NV03_PFIFO_INTR_0, status);
123 NV_WRITE(NV03_PMC_INTR_EN_0, 0);
124 }
125
126 NV_WRITE(NV03_PFIFO_CACHES, reassign);
127 }
128
129 NV_WRITE(NV03_PMC_INTR_0, NV_PMC_INTR_0_PFIFO_PENDING);
130 }
131
132 struct nouveau_bitfield_names {
133 uint32_t mask;
134 const char * name;
135 };
136
137 static struct nouveau_bitfield_names nouveau_nstatus_names[] =
138 {
139 { NV04_PGRAPH_NSTATUS_STATE_IN_USE, "STATE_IN_USE" },
140 { NV04_PGRAPH_NSTATUS_INVALID_STATE, "INVALID_STATE" },
141 { NV04_PGRAPH_NSTATUS_BAD_ARGUMENT, "BAD_ARGUMENT" },
142 { NV04_PGRAPH_NSTATUS_PROTECTION_FAULT, "PROTECTION_FAULT" }
143 };
144
145 static struct nouveau_bitfield_names nouveau_nstatus_names_nv10[] =
146 {
147 { NV10_PGRAPH_NSTATUS_STATE_IN_USE, "STATE_IN_USE" },
148 { NV10_PGRAPH_NSTATUS_INVALID_STATE, "INVALID_STATE" },
149 { NV10_PGRAPH_NSTATUS_BAD_ARGUMENT, "BAD_ARGUMENT" },
150 { NV10_PGRAPH_NSTATUS_PROTECTION_FAULT, "PROTECTION_FAULT" }
151 };
152
153 static struct nouveau_bitfield_names nouveau_nsource_names[] =
154 {
155 { NV03_PGRAPH_NSOURCE_NOTIFICATION, "NOTIFICATION" },
156 { NV03_PGRAPH_NSOURCE_DATA_ERROR, "DATA_ERROR" },
157 { NV03_PGRAPH_NSOURCE_PROTECTION_ERROR, "PROTECTION_ERROR" },
158 { NV03_PGRAPH_NSOURCE_RANGE_EXCEPTION, "RANGE_EXCEPTION" },
159 { NV03_PGRAPH_NSOURCE_LIMIT_COLOR, "LIMIT_COLOR" },
160 { NV03_PGRAPH_NSOURCE_LIMIT_ZETA, "LIMIT_ZETA" },
161 { NV03_PGRAPH_NSOURCE_ILLEGAL_MTHD, "ILLEGAL_MTHD" },
162 { NV03_PGRAPH_NSOURCE_DMA_R_PROTECTION, "DMA_R_PROTECTION" },
163 { NV03_PGRAPH_NSOURCE_DMA_W_PROTECTION, "DMA_W_PROTECTION" },
164 { NV03_PGRAPH_NSOURCE_FORMAT_EXCEPTION, "FORMAT_EXCEPTION" },
165 { NV03_PGRAPH_NSOURCE_PATCH_EXCEPTION, "PATCH_EXCEPTION" },
166 { NV03_PGRAPH_NSOURCE_STATE_INVALID, "STATE_INVALID" },
167 { NV03_PGRAPH_NSOURCE_DOUBLE_NOTIFY, "DOUBLE_NOTIFY" },
168 { NV03_PGRAPH_NSOURCE_NOTIFY_IN_USE, "NOTIFY_IN_USE" },
169 { NV03_PGRAPH_NSOURCE_METHOD_CNT, "METHOD_CNT" },
170 { NV03_PGRAPH_NSOURCE_BFR_NOTIFICATION, "BFR_NOTIFICATION" },
171 { NV03_PGRAPH_NSOURCE_DMA_VTX_PROTECTION, "DMA_VTX_PROTECTION" },
172 { NV03_PGRAPH_NSOURCE_DMA_WIDTH_A, "DMA_WIDTH_A" },
173 { NV03_PGRAPH_NSOURCE_DMA_WIDTH_B, "DMA_WIDTH_B" },
174 };
175
176 static void
nouveau_print_bitfield_names(uint32_t value,const struct nouveau_bitfield_names * namelist,const int namelist_len)177 nouveau_print_bitfield_names(uint32_t value,
178 const struct nouveau_bitfield_names *namelist,
179 const int namelist_len)
180 {
181 int i;
182 for(i=0; i<namelist_len; ++i) {
183 uint32_t mask = namelist[i].mask;
184 if(value & mask) {
185 printk(" %s", namelist[i].name);
186 value &= ~mask;
187 }
188 }
189 if(value)
190 printk(" (unknown bits 0x%08x)", value);
191 }
192
193 static int
nouveau_graph_chid_from_grctx(struct drm_device * dev)194 nouveau_graph_chid_from_grctx(struct drm_device *dev)
195 {
196 struct drm_nouveau_private *dev_priv = dev->dev_private;
197 uint32_t inst;
198 int i;
199
200 if (dev_priv->card_type < NV_40)
201 return dev_priv->Engine.fifo.channels;
202 else
203 if (dev_priv->card_type < NV_50)
204 inst = (NV_READ(0x40032c) & 0xfffff) << 4;
205 else
206 inst = NV_READ(0x40032c) & 0xfffff;
207
208 for (i = 0; i < dev_priv->Engine.fifo.channels; i++) {
209 struct nouveau_channel *chan = dev_priv->fifos[i];
210
211 if (!chan || !chan->ramin_grctx)
212 continue;
213
214 if (dev_priv->card_type < NV_50) {
215 if (inst == chan->ramin_grctx->instance)
216 break;
217 } else {
218 if (inst == INSTANCE_RD(chan->ramin_grctx->gpuobj, 0))
219 break;
220 }
221 }
222
223 return i;
224 }
225
226 static int
nouveau_graph_trapped_channel(struct drm_device * dev,int * channel_ret)227 nouveau_graph_trapped_channel(struct drm_device *dev, int *channel_ret)
228 {
229 struct drm_nouveau_private *dev_priv = dev->dev_private;
230 struct nouveau_engine *engine = &dev_priv->Engine;
231 int channel;
232
233 if (dev_priv->card_type < NV_10)
234 channel = (NV_READ(NV04_PGRAPH_TRAPPED_ADDR) >> 24) & 0xf;
235 else
236 if (dev_priv->card_type < NV_40)
237 channel = (NV_READ(NV04_PGRAPH_TRAPPED_ADDR) >> 20) & 0x1f;
238 else
239 channel = nouveau_graph_chid_from_grctx(dev);
240
241 if (channel >= engine->fifo.channels || !dev_priv->fifos[channel]) {
242 DRM_ERROR("AIII, invalid/inactive channel id %d\n", channel);
243 return -EINVAL;
244 }
245
246 *channel_ret = channel;
247 return 0;
248 }
249
250 struct nouveau_pgraph_trap {
251 int channel;
252 int class;
253 int subc, mthd, size;
254 uint32_t data, data2;
255 uint32_t nsource, nstatus;
256 };
257
258 static void
nouveau_graph_trap_info(struct drm_device * dev,struct nouveau_pgraph_trap * trap)259 nouveau_graph_trap_info(struct drm_device *dev,
260 struct nouveau_pgraph_trap *trap)
261 {
262 struct drm_nouveau_private *dev_priv = dev->dev_private;
263 uint32_t address;
264
265 trap->nsource = trap->nstatus = 0;
266 if (dev_priv->card_type < NV_50) {
267 trap->nsource = NV_READ(NV03_PGRAPH_NSOURCE);
268 trap->nstatus = NV_READ(NV03_PGRAPH_NSTATUS);
269 }
270
271 if (nouveau_graph_trapped_channel(dev, &trap->channel))
272 trap->channel = -1;
273 address = NV_READ(NV04_PGRAPH_TRAPPED_ADDR);
274
275 trap->mthd = address & 0x1FFC;
276 trap->data = NV_READ(NV04_PGRAPH_TRAPPED_DATA);
277 if (dev_priv->card_type < NV_10) {
278 trap->subc = (address >> 13) & 0x7;
279 } else {
280 trap->subc = (address >> 16) & 0x7;
281 trap->data2 = NV_READ(NV10_PGRAPH_TRAPPED_DATA_HIGH);
282 }
283
284 if (dev_priv->card_type < NV_10) {
285 trap->class = NV_READ(0x400180 + trap->subc*4) & 0xFF;
286 } else if (dev_priv->card_type < NV_40) {
287 trap->class = NV_READ(0x400160 + trap->subc*4) & 0xFFF;
288 } else if (dev_priv->card_type < NV_50) {
289 trap->class = NV_READ(0x400160 + trap->subc*4) & 0xFFFF;
290 } else {
291 trap->class = NV_READ(0x400814);
292 }
293 }
294
295 static void
nouveau_graph_dump_trap_info(struct drm_device * dev,const char * id,struct nouveau_pgraph_trap * trap)296 nouveau_graph_dump_trap_info(struct drm_device *dev, const char *id,
297 struct nouveau_pgraph_trap *trap)
298 {
299 struct drm_nouveau_private *dev_priv = dev->dev_private;
300 uint32_t nsource = trap->nsource, nstatus = trap->nstatus;
301
302 DRM_INFO("%s - nSource:", id);
303 nouveau_print_bitfield_names(nsource, nouveau_nsource_names,
304 ARRAY_SIZE(nouveau_nsource_names));
305 printk(", nStatus:");
306 if (dev_priv->card_type < NV_10)
307 nouveau_print_bitfield_names(nstatus, nouveau_nstatus_names,
308 ARRAY_SIZE(nouveau_nstatus_names));
309 else
310 nouveau_print_bitfield_names(nstatus, nouveau_nstatus_names_nv10,
311 ARRAY_SIZE(nouveau_nstatus_names_nv10));
312 printk("\n");
313
314 DRM_INFO("%s - Ch %d/%d Class 0x%04x Mthd 0x%04x Data 0x%08x:0x%08x\n",
315 id, trap->channel, trap->subc, trap->class, trap->mthd,
316 trap->data2, trap->data);
317 }
318
319 static inline void
nouveau_pgraph_intr_notify(struct drm_device * dev,uint32_t nsource)320 nouveau_pgraph_intr_notify(struct drm_device *dev, uint32_t nsource)
321 {
322 struct nouveau_pgraph_trap trap;
323 int unhandled = 0;
324
325 nouveau_graph_trap_info(dev, &trap);
326
327 if (nsource & NV03_PGRAPH_NSOURCE_ILLEGAL_MTHD) {
328 /* NV4 (nvidia TNT 1) reports software methods with
329 * PGRAPH NOTIFY ILLEGAL_MTHD
330 */
331 DRM_DEBUG("Got NV04 software method method %x for class %#x\n",
332 trap.mthd, trap.class);
333
334 if (nouveau_sw_method_execute(dev, trap.class, trap.mthd)) {
335 DRM_ERROR("Unable to execute NV04 software method %x "
336 "for object class %x. Please report.\n",
337 trap.mthd, trap.class);
338 unhandled = 1;
339 }
340 } else {
341 unhandled = 1;
342 }
343
344 if (unhandled)
345 nouveau_graph_dump_trap_info(dev, "PGRAPH_NOTIFY", &trap);
346 }
347
348 static inline void
nouveau_pgraph_intr_error(struct drm_device * dev,uint32_t nsource)349 nouveau_pgraph_intr_error(struct drm_device *dev, uint32_t nsource)
350 {
351 struct nouveau_pgraph_trap trap;
352 int unhandled = 0;
353
354 nouveau_graph_trap_info(dev, &trap);
355 trap.nsource = nsource;
356
357 if (nsource & NV03_PGRAPH_NSOURCE_ILLEGAL_MTHD) {
358 if (trap.channel >= 0 && trap.mthd == 0x0150) {
359 nouveau_fence_handler(dev, trap.channel);
360 } else
361 if (nouveau_sw_method_execute(dev, trap.class, trap.mthd)) {
362 unhandled = 1;
363 }
364 } else {
365 unhandled = 1;
366 }
367
368 if (unhandled)
369 nouveau_graph_dump_trap_info(dev, "PGRAPH_ERROR", &trap);
370 }
371
372 static inline void
nouveau_pgraph_intr_context_switch(struct drm_device * dev)373 nouveau_pgraph_intr_context_switch(struct drm_device *dev)
374 {
375 struct drm_nouveau_private *dev_priv = dev->dev_private;
376 struct nouveau_engine *engine = &dev_priv->Engine;
377 uint32_t chid;
378
379 chid = engine->fifo.channel_id(dev);
380 DRM_DEBUG("PGRAPH context switch interrupt channel %x\n", chid);
381
382 switch(dev_priv->card_type) {
383 case NV_04:
384 case NV_05:
385 nouveau_nv04_context_switch(dev);
386 break;
387 case NV_10:
388 case NV_11:
389 case NV_17:
390 nouveau_nv10_context_switch(dev);
391 break;
392 default:
393 DRM_ERROR("Context switch not implemented\n");
394 break;
395 }
396 }
397
398 static void
nouveau_pgraph_irq_handler(struct drm_device * dev)399 nouveau_pgraph_irq_handler(struct drm_device *dev)
400 {
401 struct drm_nouveau_private *dev_priv = dev->dev_private;
402 uint32_t status;
403
404 while ((status = NV_READ(NV03_PGRAPH_INTR))) {
405 uint32_t nsource = NV_READ(NV03_PGRAPH_NSOURCE);
406
407 if (status & NV_PGRAPH_INTR_NOTIFY) {
408 nouveau_pgraph_intr_notify(dev, nsource);
409
410 status &= ~NV_PGRAPH_INTR_NOTIFY;
411 NV_WRITE(NV03_PGRAPH_INTR, NV_PGRAPH_INTR_NOTIFY);
412 }
413
414 if (status & NV_PGRAPH_INTR_ERROR) {
415 nouveau_pgraph_intr_error(dev, nsource);
416
417 status &= ~NV_PGRAPH_INTR_ERROR;
418 NV_WRITE(NV03_PGRAPH_INTR, NV_PGRAPH_INTR_ERROR);
419 }
420
421 if (status & NV_PGRAPH_INTR_CONTEXT_SWITCH) {
422 nouveau_pgraph_intr_context_switch(dev);
423
424 status &= ~NV_PGRAPH_INTR_CONTEXT_SWITCH;
425 NV_WRITE(NV03_PGRAPH_INTR,
426 NV_PGRAPH_INTR_CONTEXT_SWITCH);
427 }
428
429 if (status) {
430 DRM_INFO("Unhandled PGRAPH_INTR - 0x%08x\n", status);
431 NV_WRITE(NV03_PGRAPH_INTR, status);
432 }
433
434 if ((NV_READ(NV04_PGRAPH_FIFO) & (1 << 0)) == 0)
435 NV_WRITE(NV04_PGRAPH_FIFO, 1);
436 }
437
438 NV_WRITE(NV03_PMC_INTR_0, NV_PMC_INTR_0_PGRAPH_PENDING);
439 }
440
441 static void
nv50_pgraph_irq_handler(struct drm_device * dev)442 nv50_pgraph_irq_handler(struct drm_device *dev)
443 {
444 struct drm_nouveau_private *dev_priv = dev->dev_private;
445 uint32_t status, nsource;
446
447 status = NV_READ(NV03_PGRAPH_INTR);
448 nsource = NV_READ(NV03_PGRAPH_NSOURCE);
449
450 if (status & 0x00000020) {
451 nouveau_pgraph_intr_error(dev,
452 NV03_PGRAPH_NSOURCE_ILLEGAL_MTHD);
453
454 status &= ~0x00000020;
455 NV_WRITE(NV03_PGRAPH_INTR, 0x00000020);
456 }
457
458 if (status & 0x00100000) {
459 nouveau_pgraph_intr_error(dev,
460 NV03_PGRAPH_NSOURCE_DATA_ERROR);
461
462 status &= ~0x00100000;
463 NV_WRITE(NV03_PGRAPH_INTR, 0x00100000);
464 }
465
466 if (status & 0x00200000) {
467 int r;
468
469 nouveau_pgraph_intr_error(dev, nsource |
470 NV03_PGRAPH_NSOURCE_PROTECTION_ERROR);
471
472 DRM_ERROR("magic set 1:\n");
473 for (r = 0x408900; r <= 0x408910; r += 4)
474 DRM_ERROR("\t0x%08x: 0x%08x\n", r, NV_READ(r));
475 NV_WRITE(0x408900, NV_READ(0x408904) | 0xc0000000);
476 for (r = 0x408e08; r <= 0x408e24; r += 4)
477 DRM_ERROR("\t0x%08x: 0x%08x\n", r, NV_READ(r));
478 NV_WRITE(0x408e08, NV_READ(0x408e08) | 0xc0000000);
479
480 DRM_ERROR("magic set 2:\n");
481 for (r = 0x409900; r <= 0x409910; r += 4)
482 DRM_ERROR("\t0x%08x: 0x%08x\n", r, NV_READ(r));
483 NV_WRITE(0x409900, NV_READ(0x409904) | 0xc0000000);
484 for (r = 0x409e08; r <= 0x409e24; r += 4)
485 DRM_ERROR("\t0x%08x: 0x%08x\n", r, NV_READ(r));
486 NV_WRITE(0x409e08, NV_READ(0x409e08) | 0xc0000000);
487
488 status &= ~0x00200000;
489 NV_WRITE(NV03_PGRAPH_NSOURCE, nsource);
490 NV_WRITE(NV03_PGRAPH_INTR, 0x00200000);
491 }
492
493 if (status) {
494 DRM_INFO("Unhandled PGRAPH_INTR - 0x%08x\n", status);
495 NV_WRITE(NV03_PGRAPH_INTR, status);
496 }
497
498 {
499 const int isb = (1 << 16) | (1 << 0);
500
501 if ((NV_READ(0x400500) & isb) != isb)
502 NV_WRITE(0x400500, NV_READ(0x400500) | isb);
503 }
504
505 NV_WRITE(NV03_PMC_INTR_0, NV_PMC_INTR_0_PGRAPH_PENDING);
506 }
507
508 static void
nouveau_crtc_irq_handler(struct drm_device * dev,int crtc)509 nouveau_crtc_irq_handler(struct drm_device *dev, int crtc)
510 {
511 struct drm_nouveau_private *dev_priv = dev->dev_private;
512
513 if (crtc&1) {
514 NV_WRITE(NV_CRTC0_INTSTAT, NV_CRTC_INTR_VBLANK);
515 }
516
517 if (crtc&2) {
518 NV_WRITE(NV_CRTC1_INTSTAT, NV_CRTC_INTR_VBLANK);
519 }
520 }
521
522 static void
nouveau_nv50_display_irq_handler(struct drm_device * dev)523 nouveau_nv50_display_irq_handler(struct drm_device *dev)
524 {
525 struct drm_nouveau_private *dev_priv = dev->dev_private;
526 uint32_t val = NV_READ(NV50_DISPLAY_SUPERVISOR);
527
528 DRM_INFO("NV50_DISPLAY_INTR - 0x%08X\n", val);
529
530 NV_WRITE(NV50_DISPLAY_SUPERVISOR, val);
531 }
532
533 static void
nouveau_nv50_i2c_irq_handler(struct drm_device * dev)534 nouveau_nv50_i2c_irq_handler(struct drm_device *dev)
535 {
536 struct drm_nouveau_private *dev_priv = dev->dev_private;
537
538 DRM_INFO("NV50_I2C_INTR - 0x%08X\n", NV_READ(NV50_I2C_CONTROLLER));
539
540 /* This seems to be the way to acknowledge an interrupt. */
541 NV_WRITE(NV50_I2C_CONTROLLER, 0x7FFF7FFF);
542 }
543
544 irqreturn_t
nouveau_irq_handler(DRM_IRQ_ARGS)545 nouveau_irq_handler(DRM_IRQ_ARGS)
546 {
547 struct drm_device *dev = (struct drm_device*)arg;
548 struct drm_nouveau_private *dev_priv = dev->dev_private;
549 uint32_t status;
550
551 status = NV_READ(NV03_PMC_INTR_0);
552 if (!status)
553 return IRQ_NONE;
554
555 if (status & NV_PMC_INTR_0_PFIFO_PENDING) {
556 nouveau_fifo_irq_handler(dev);
557 status &= ~NV_PMC_INTR_0_PFIFO_PENDING;
558 }
559
560 if (status & NV_PMC_INTR_0_PGRAPH_PENDING) {
561 if (dev_priv->card_type >= NV_50)
562 nv50_pgraph_irq_handler(dev);
563 else
564 nouveau_pgraph_irq_handler(dev);
565
566 status &= ~NV_PMC_INTR_0_PGRAPH_PENDING;
567 }
568
569 if (status & NV_PMC_INTR_0_CRTCn_PENDING) {
570 nouveau_crtc_irq_handler(dev, (status>>24)&3);
571 status &= ~NV_PMC_INTR_0_CRTCn_PENDING;
572 }
573
574 if (status & NV_PMC_INTR_0_NV50_DISPLAY_PENDING) {
575 nouveau_nv50_display_irq_handler(dev);
576 status &= ~NV_PMC_INTR_0_NV50_DISPLAY_PENDING;
577 }
578
579 if (status & NV_PMC_INTR_0_NV50_I2C_PENDING) {
580 nouveau_nv50_i2c_irq_handler(dev);
581 status &= ~NV_PMC_INTR_0_NV50_I2C_PENDING;
582 }
583
584 if (status)
585 DRM_ERROR("Unhandled PMC INTR status bits 0x%08x\n", status);
586
587 return IRQ_HANDLED;
588 }
589