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27#include "drmP.h"
28#include "drm.h"
29#include "nouveau_drv.h"
30#include "nouveau_ramht.h"
31#include "nouveau_util.h"
32
33#define NV04_RAMFC(c) (dev_priv->ramfc->pinst + ((c) * NV04_RAMFC__SIZE))
34#define NV04_RAMFC__SIZE 32
35#define NV04_RAMFC_DMA_PUT 0x00
36#define NV04_RAMFC_DMA_GET 0x04
37#define NV04_RAMFC_DMA_INSTANCE 0x08
38#define NV04_RAMFC_DMA_STATE 0x0C
39#define NV04_RAMFC_DMA_FETCH 0x10
40#define NV04_RAMFC_ENGINE 0x14
41#define NV04_RAMFC_PULL1_ENGINE 0x18
42
43#define RAMFC_WR(offset, val) nv_wo32(chan->ramfc, NV04_RAMFC_##offset, (val))
44#define RAMFC_RD(offset) nv_ro32(chan->ramfc, NV04_RAMFC_##offset)
45
46void
47nv04_fifo_disable(struct drm_device *dev)
48{
49 uint32_t tmp;
50
51 tmp = nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_PUSH);
52 nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_PUSH, tmp & ~1);
53 nv_wr32(dev, NV03_PFIFO_CACHE1_PUSH0, 0);
54 tmp = nv_rd32(dev, NV03_PFIFO_CACHE1_PULL1);
55 nv_wr32(dev, NV04_PFIFO_CACHE1_PULL0, tmp & ~1);
56}
57
58void
59nv04_fifo_enable(struct drm_device *dev)
60{
61 nv_wr32(dev, NV03_PFIFO_CACHE1_PUSH0, 1);
62 nv_wr32(dev, NV04_PFIFO_CACHE1_PULL0, 1);
63}
64
65bool
66nv04_fifo_reassign(struct drm_device *dev, bool enable)
67{
68 uint32_t reassign = nv_rd32(dev, NV03_PFIFO_CACHES);
69
70 nv_wr32(dev, NV03_PFIFO_CACHES, enable ? 1 : 0);
71 return (reassign == 1);
72}
73
74bool
75nv04_fifo_cache_pull(struct drm_device *dev, bool enable)
76{
77 int pull = nv_mask(dev, NV04_PFIFO_CACHE1_PULL0, 1, enable);
78
79 if (!enable) {
80
81
82
83
84
85
86
87
88 if (!nv_wait(dev, NV04_PFIFO_CACHE1_PULL0,
89 NV04_PFIFO_CACHE1_PULL0_HASH_BUSY, 0))
90 NV_ERROR(dev, "Timeout idling the PFIFO puller.\n");
91
92 if (nv_rd32(dev, NV04_PFIFO_CACHE1_PULL0) &
93 NV04_PFIFO_CACHE1_PULL0_HASH_FAILED)
94 nv_wr32(dev, NV03_PFIFO_INTR_0,
95 NV_PFIFO_INTR_CACHE_ERROR);
96
97 nv_wr32(dev, NV04_PFIFO_CACHE1_HASH, 0);
98 }
99
100 return pull & 1;
101}
102
103int
104nv04_fifo_channel_id(struct drm_device *dev)
105{
106 return nv_rd32(dev, NV03_PFIFO_CACHE1_PUSH1) &
107 NV03_PFIFO_CACHE1_PUSH1_CHID_MASK;
108}
109
110#ifdef __BIG_ENDIAN
111#define DMA_FETCH_ENDIANNESS NV_PFIFO_CACHE1_BIG_ENDIAN
112#else
113#define DMA_FETCH_ENDIANNESS 0
114#endif
115
116int
117nv04_fifo_create_context(struct nouveau_channel *chan)
118{
119 struct drm_device *dev = chan->dev;
120 struct drm_nouveau_private *dev_priv = dev->dev_private;
121 unsigned long flags;
122 int ret;
123
124 ret = nouveau_gpuobj_new_fake(dev, NV04_RAMFC(chan->id), ~0,
125 NV04_RAMFC__SIZE,
126 NVOBJ_FLAG_ZERO_ALLOC |
127 NVOBJ_FLAG_ZERO_FREE,
128 &chan->ramfc);
129 if (ret)
130 return ret;
131
132 chan->user = ioremap(pci_resource_start(dev->pdev, 0) +
133 NV03_USER(chan->id), PAGE_SIZE);
134 if (!chan->user)
135 return -ENOMEM;
136
137 spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
138
139
140 RAMFC_WR(DMA_PUT, chan->pushbuf_base);
141 RAMFC_WR(DMA_GET, chan->pushbuf_base);
142 RAMFC_WR(DMA_INSTANCE, chan->pushbuf->pinst >> 4);
143 RAMFC_WR(DMA_FETCH, (NV_PFIFO_CACHE1_DMA_FETCH_TRIG_128_BYTES |
144 NV_PFIFO_CACHE1_DMA_FETCH_SIZE_128_BYTES |
145 NV_PFIFO_CACHE1_DMA_FETCH_MAX_REQS_8 |
146 DMA_FETCH_ENDIANNESS));
147
148
149 nv_wr32(dev, NV04_PFIFO_MODE,
150 nv_rd32(dev, NV04_PFIFO_MODE) | (1 << chan->id));
151
152 spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
153 return 0;
154}
155
156void
157nv04_fifo_destroy_context(struct nouveau_channel *chan)
158{
159 struct drm_device *dev = chan->dev;
160 struct drm_nouveau_private *dev_priv = dev->dev_private;
161 struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
162 unsigned long flags;
163
164 spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
165 pfifo->reassign(dev, false);
166
167
168 if (pfifo->channel_id(dev) == chan->id) {
169 pfifo->disable(dev);
170 pfifo->unload_context(dev);
171 pfifo->enable(dev);
172 }
173
174
175 nv_mask(dev, NV04_PFIFO_MODE, 1 << chan->id, 0);
176
177 pfifo->reassign(dev, true);
178 spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
179
180
181 if (chan->user) {
182 iounmap(chan->user);
183 chan->user = NULL;
184 }
185 nouveau_gpuobj_ref(NULL, &chan->ramfc);
186}
187
188static void
189nv04_fifo_do_load_context(struct drm_device *dev, int chid)
190{
191 struct drm_nouveau_private *dev_priv = dev->dev_private;
192 uint32_t fc = NV04_RAMFC(chid), tmp;
193
194 nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_PUT, nv_ri32(dev, fc + 0));
195 nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_GET, nv_ri32(dev, fc + 4));
196 tmp = nv_ri32(dev, fc + 8);
197 nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_INSTANCE, tmp & 0xFFFF);
198 nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_DCOUNT, tmp >> 16);
199 nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_STATE, nv_ri32(dev, fc + 12));
200 nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_FETCH, nv_ri32(dev, fc + 16));
201 nv_wr32(dev, NV04_PFIFO_CACHE1_ENGINE, nv_ri32(dev, fc + 20));
202 nv_wr32(dev, NV04_PFIFO_CACHE1_PULL1, nv_ri32(dev, fc + 24));
203
204 nv_wr32(dev, NV03_PFIFO_CACHE1_GET, 0);
205 nv_wr32(dev, NV03_PFIFO_CACHE1_PUT, 0);
206}
207
208int
209nv04_fifo_load_context(struct nouveau_channel *chan)
210{
211 uint32_t tmp;
212
213 nv_wr32(chan->dev, NV03_PFIFO_CACHE1_PUSH1,
214 NV03_PFIFO_CACHE1_PUSH1_DMA | chan->id);
215 nv04_fifo_do_load_context(chan->dev, chan->id);
216 nv_wr32(chan->dev, NV04_PFIFO_CACHE1_DMA_PUSH, 1);
217
218
219 tmp = nv_rd32(chan->dev, NV04_PFIFO_CACHE1_DMA_CTL) & ~(1 << 31);
220 nv_wr32(chan->dev, NV04_PFIFO_CACHE1_DMA_CTL, tmp);
221
222 return 0;
223}
224
225int
226nv04_fifo_unload_context(struct drm_device *dev)
227{
228 struct drm_nouveau_private *dev_priv = dev->dev_private;
229 struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
230 struct nouveau_channel *chan = NULL;
231 uint32_t tmp;
232 int chid;
233
234 chid = pfifo->channel_id(dev);
235 if (chid < 0 || chid >= dev_priv->engine.fifo.channels)
236 return 0;
237
238 chan = dev_priv->channels.ptr[chid];
239 if (!chan) {
240 NV_ERROR(dev, "Inactive channel on PFIFO: %d\n", chid);
241 return -EINVAL;
242 }
243
244 RAMFC_WR(DMA_PUT, nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_PUT));
245 RAMFC_WR(DMA_GET, nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_GET));
246 tmp = nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_DCOUNT) << 16;
247 tmp |= nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_INSTANCE);
248 RAMFC_WR(DMA_INSTANCE, tmp);
249 RAMFC_WR(DMA_STATE, nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_STATE));
250 RAMFC_WR(DMA_FETCH, nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_FETCH));
251 RAMFC_WR(ENGINE, nv_rd32(dev, NV04_PFIFO_CACHE1_ENGINE));
252 RAMFC_WR(PULL1_ENGINE, nv_rd32(dev, NV04_PFIFO_CACHE1_PULL1));
253
254 nv04_fifo_do_load_context(dev, pfifo->channels - 1);
255 nv_wr32(dev, NV03_PFIFO_CACHE1_PUSH1, pfifo->channels - 1);
256 return 0;
257}
258
259static void
260nv04_fifo_init_reset(struct drm_device *dev)
261{
262 nv_wr32(dev, NV03_PMC_ENABLE,
263 nv_rd32(dev, NV03_PMC_ENABLE) & ~NV_PMC_ENABLE_PFIFO);
264 nv_wr32(dev, NV03_PMC_ENABLE,
265 nv_rd32(dev, NV03_PMC_ENABLE) | NV_PMC_ENABLE_PFIFO);
266
267 nv_wr32(dev, 0x003224, 0x000f0078);
268 nv_wr32(dev, 0x002044, 0x0101ffff);
269 nv_wr32(dev, 0x002040, 0x000000ff);
270 nv_wr32(dev, 0x002500, 0x00000000);
271 nv_wr32(dev, 0x003000, 0x00000000);
272 nv_wr32(dev, 0x003050, 0x00000000);
273 nv_wr32(dev, 0x003200, 0x00000000);
274 nv_wr32(dev, 0x003250, 0x00000000);
275 nv_wr32(dev, 0x003220, 0x00000000);
276
277 nv_wr32(dev, 0x003250, 0x00000000);
278 nv_wr32(dev, 0x003270, 0x00000000);
279 nv_wr32(dev, 0x003210, 0x00000000);
280}
281
282static void
283nv04_fifo_init_ramxx(struct drm_device *dev)
284{
285 struct drm_nouveau_private *dev_priv = dev->dev_private;
286
287 nv_wr32(dev, NV03_PFIFO_RAMHT, (0x03 << 24) |
288 ((dev_priv->ramht->bits - 9) << 16) |
289 (dev_priv->ramht->gpuobj->pinst >> 8));
290 nv_wr32(dev, NV03_PFIFO_RAMRO, dev_priv->ramro->pinst >> 8);
291 nv_wr32(dev, NV03_PFIFO_RAMFC, dev_priv->ramfc->pinst >> 8);
292}
293
294static void
295nv04_fifo_init_intr(struct drm_device *dev)
296{
297 nouveau_irq_register(dev, 8, nv04_fifo_isr);
298 nv_wr32(dev, 0x002100, 0xffffffff);
299 nv_wr32(dev, 0x002140, 0xffffffff);
300}
301
302int
303nv04_fifo_init(struct drm_device *dev)
304{
305 struct drm_nouveau_private *dev_priv = dev->dev_private;
306 struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
307 int i;
308
309 nv04_fifo_init_reset(dev);
310 nv04_fifo_init_ramxx(dev);
311
312 nv04_fifo_do_load_context(dev, pfifo->channels - 1);
313 nv_wr32(dev, NV03_PFIFO_CACHE1_PUSH1, pfifo->channels - 1);
314
315 nv04_fifo_init_intr(dev);
316 pfifo->enable(dev);
317 pfifo->reassign(dev, true);
318
319 for (i = 0; i < dev_priv->engine.fifo.channels; i++) {
320 if (dev_priv->channels.ptr[i]) {
321 uint32_t mode = nv_rd32(dev, NV04_PFIFO_MODE);
322 nv_wr32(dev, NV04_PFIFO_MODE, mode | (1 << i));
323 }
324 }
325
326 return 0;
327}
328
329void
330nv04_fifo_fini(struct drm_device *dev)
331{
332 nv_wr32(dev, 0x2140, 0x00000000);
333 nouveau_irq_unregister(dev, 8);
334}
335
336static bool
337nouveau_fifo_swmthd(struct drm_device *dev, u32 chid, u32 addr, u32 data)
338{
339 struct drm_nouveau_private *dev_priv = dev->dev_private;
340 struct nouveau_channel *chan = NULL;
341 struct nouveau_gpuobj *obj;
342 unsigned long flags;
343 const int subc = (addr >> 13) & 0x7;
344 const int mthd = addr & 0x1ffc;
345 bool handled = false;
346 u32 engine;
347
348 spin_lock_irqsave(&dev_priv->channels.lock, flags);
349 if (likely(chid >= 0 && chid < dev_priv->engine.fifo.channels))
350 chan = dev_priv->channels.ptr[chid];
351 if (unlikely(!chan))
352 goto out;
353
354 switch (mthd) {
355 case 0x0000:
356 obj = nouveau_ramht_find(chan, data);
357 if (unlikely(!obj || obj->engine != NVOBJ_ENGINE_SW))
358 break;
359
360 chan->sw_subchannel[subc] = obj->class;
361 engine = 0x0000000f << (subc * 4);
362
363 nv_mask(dev, NV04_PFIFO_CACHE1_ENGINE, engine, 0x00000000);
364 handled = true;
365 break;
366 default:
367 engine = nv_rd32(dev, NV04_PFIFO_CACHE1_ENGINE);
368 if (unlikely(((engine >> (subc * 4)) & 0xf) != 0))
369 break;
370
371 if (!nouveau_gpuobj_mthd_call(chan, chan->sw_subchannel[subc],
372 mthd, data))
373 handled = true;
374 break;
375 }
376
377out:
378 spin_unlock_irqrestore(&dev_priv->channels.lock, flags);
379 return handled;
380}
381
382static const char *nv_dma_state_err(u32 state)
383{
384 static const char * const desc[] = {
385 "NONE", "CALL_SUBR_ACTIVE", "INVALID_MTHD", "RET_SUBR_INACTIVE",
386 "INVALID_CMD", "IB_EMPTY", "MEM_FAULT", "UNK"
387 };
388 return desc[(state >> 29) & 0x7];
389}
390
391void
392nv04_fifo_isr(struct drm_device *dev)
393{
394 struct drm_nouveau_private *dev_priv = dev->dev_private;
395 struct nouveau_engine *engine = &dev_priv->engine;
396 uint32_t status, reassign;
397 int cnt = 0;
398
399 reassign = nv_rd32(dev, NV03_PFIFO_CACHES) & 1;
400 while ((status = nv_rd32(dev, NV03_PFIFO_INTR_0)) && (cnt++ < 100)) {
401 uint32_t chid, get;
402
403 nv_wr32(dev, NV03_PFIFO_CACHES, 0);
404
405 chid = engine->fifo.channel_id(dev);
406 get = nv_rd32(dev, NV03_PFIFO_CACHE1_GET);
407
408 if (status & NV_PFIFO_INTR_CACHE_ERROR) {
409 uint32_t mthd, data;
410 int ptr;
411
412
413
414
415
416
417
418 ptr = (get & 0x7ff) >> 2;
419
420 if (dev_priv->card_type < NV_40) {
421 mthd = nv_rd32(dev,
422 NV04_PFIFO_CACHE1_METHOD(ptr));
423 data = nv_rd32(dev,
424 NV04_PFIFO_CACHE1_DATA(ptr));
425 } else {
426 mthd = nv_rd32(dev,
427 NV40_PFIFO_CACHE1_METHOD(ptr));
428 data = nv_rd32(dev,
429 NV40_PFIFO_CACHE1_DATA(ptr));
430 }
431
432 if (!nouveau_fifo_swmthd(dev, chid, mthd, data)) {
433 NV_INFO(dev, "PFIFO_CACHE_ERROR - Ch %d/%d "
434 "Mthd 0x%04x Data 0x%08x\n",
435 chid, (mthd >> 13) & 7, mthd & 0x1ffc,
436 data);
437 }
438
439 nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_PUSH, 0);
440 nv_wr32(dev, NV03_PFIFO_INTR_0,
441 NV_PFIFO_INTR_CACHE_ERROR);
442
443 nv_wr32(dev, NV03_PFIFO_CACHE1_PUSH0,
444 nv_rd32(dev, NV03_PFIFO_CACHE1_PUSH0) & ~1);
445 nv_wr32(dev, NV03_PFIFO_CACHE1_GET, get + 4);
446 nv_wr32(dev, NV03_PFIFO_CACHE1_PUSH0,
447 nv_rd32(dev, NV03_PFIFO_CACHE1_PUSH0) | 1);
448 nv_wr32(dev, NV04_PFIFO_CACHE1_HASH, 0);
449
450 nv_wr32(dev, NV04_PFIFO_CACHE1_DMA_PUSH,
451 nv_rd32(dev, NV04_PFIFO_CACHE1_DMA_PUSH) | 1);
452 nv_wr32(dev, NV04_PFIFO_CACHE1_PULL0, 1);
453
454 status &= ~NV_PFIFO_INTR_CACHE_ERROR;
455 }
456
457 if (status & NV_PFIFO_INTR_DMA_PUSHER) {
458 u32 dma_get = nv_rd32(dev, 0x003244);
459 u32 dma_put = nv_rd32(dev, 0x003240);
460 u32 push = nv_rd32(dev, 0x003220);
461 u32 state = nv_rd32(dev, 0x003228);
462
463 if (dev_priv->card_type == NV_50) {
464 u32 ho_get = nv_rd32(dev, 0x003328);
465 u32 ho_put = nv_rd32(dev, 0x003320);
466 u32 ib_get = nv_rd32(dev, 0x003334);
467 u32 ib_put = nv_rd32(dev, 0x003330);
468
469 if (nouveau_ratelimit())
470 NV_INFO(dev, "PFIFO_DMA_PUSHER - Ch %d Get 0x%02x%08x "
471 "Put 0x%02x%08x IbGet 0x%08x IbPut 0x%08x "
472 "State 0x%08x (err: %s) Push 0x%08x\n",
473 chid, ho_get, dma_get, ho_put,
474 dma_put, ib_get, ib_put, state,
475 nv_dma_state_err(state),
476 push);
477
478
479 nv_wr32(dev, 0x003364, 0x00000000);
480 if (dma_get != dma_put || ho_get != ho_put) {
481 nv_wr32(dev, 0x003244, dma_put);
482 nv_wr32(dev, 0x003328, ho_put);
483 } else
484 if (ib_get != ib_put) {
485 nv_wr32(dev, 0x003334, ib_put);
486 }
487 } else {
488 NV_INFO(dev, "PFIFO_DMA_PUSHER - Ch %d Get 0x%08x "
489 "Put 0x%08x State 0x%08x (err: %s) Push 0x%08x\n",
490 chid, dma_get, dma_put, state,
491 nv_dma_state_err(state), push);
492
493 if (dma_get != dma_put)
494 nv_wr32(dev, 0x003244, dma_put);
495 }
496
497 nv_wr32(dev, 0x003228, 0x00000000);
498 nv_wr32(dev, 0x003220, 0x00000001);
499 nv_wr32(dev, 0x002100, NV_PFIFO_INTR_DMA_PUSHER);
500 status &= ~NV_PFIFO_INTR_DMA_PUSHER;
501 }
502
503 if (status & NV_PFIFO_INTR_SEMAPHORE) {
504 uint32_t sem;
505
506 status &= ~NV_PFIFO_INTR_SEMAPHORE;
507 nv_wr32(dev, NV03_PFIFO_INTR_0,
508 NV_PFIFO_INTR_SEMAPHORE);
509
510 sem = nv_rd32(dev, NV10_PFIFO_CACHE1_SEMAPHORE);
511 nv_wr32(dev, NV10_PFIFO_CACHE1_SEMAPHORE, sem | 0x1);
512
513 nv_wr32(dev, NV03_PFIFO_CACHE1_GET, get + 4);
514 nv_wr32(dev, NV04_PFIFO_CACHE1_PULL0, 1);
515 }
516
517 if (dev_priv->card_type == NV_50) {
518 if (status & 0x00000010) {
519 nv50_fb_vm_trap(dev, nouveau_ratelimit());
520 status &= ~0x00000010;
521 nv_wr32(dev, 0x002100, 0x00000010);
522 }
523 }
524
525 if (status) {
526 if (nouveau_ratelimit())
527 NV_INFO(dev, "PFIFO_INTR 0x%08x - Ch %d\n",
528 status, chid);
529 nv_wr32(dev, NV03_PFIFO_INTR_0, status);
530 status = 0;
531 }
532
533 nv_wr32(dev, NV03_PFIFO_CACHES, reassign);
534 }
535
536 if (status) {
537 NV_INFO(dev, "PFIFO still angry after %d spins, halt\n", cnt);
538 nv_wr32(dev, 0x2140, 0);
539 nv_wr32(dev, 0x140, 0);
540 }
541
542 nv_wr32(dev, NV03_PMC_INTR_0, NV_PMC_INTR_0_PFIFO_PENDING);
543}
544
