2 * Copyright 2012 Red Hat Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
26 #include <core/class.h>
27 #include <core/engctx.h>
28 #include <core/namedb.h>
29 #include <core/handle.h>
30 #include <core/ramht.h>
31 #include <core/event.h>
33 #include <subdev/instmem.h>
34 #include <subdev/instmem/nv04.h>
35 #include <subdev/timer.h>
36 #include <subdev/fb.h>
38 #include <engine/fifo.h>
42 static struct ramfc_desc
44 { 32, 0, 0x00, 0, NV04_PFIFO_CACHE1_DMA_PUT },
45 { 32, 0, 0x04, 0, NV04_PFIFO_CACHE1_DMA_GET },
46 { 16, 0, 0x08, 0, NV04_PFIFO_CACHE1_DMA_INSTANCE },
47 { 16, 16, 0x08, 0, NV04_PFIFO_CACHE1_DMA_DCOUNT },
48 { 32, 0, 0x0c, 0, NV04_PFIFO_CACHE1_DMA_STATE },
49 { 32, 0, 0x10, 0, NV04_PFIFO_CACHE1_DMA_FETCH },
50 { 32, 0, 0x14, 0, NV04_PFIFO_CACHE1_ENGINE },
51 { 32, 0, 0x18, 0, NV04_PFIFO_CACHE1_PULL1 },
55 /*******************************************************************************
56 * FIFO channel objects
57 ******************************************************************************/
60 nv04_fifo_object_attach(struct nouveau_object *parent,
61 struct nouveau_object *object, u32 handle)
63 struct nv04_fifo_priv *priv = (void *)parent->engine;
64 struct nv04_fifo_chan *chan = (void *)parent;
65 u32 context, chid = chan->base.chid;
68 if (nv_iclass(object, NV_GPUOBJ_CLASS))
69 context = nv_gpuobj(object)->addr >> 4;
71 context = 0x00000004; /* just non-zero */
73 switch (nv_engidx(object->engine)) {
74 case NVDEV_ENGINE_DMAOBJ:
76 context |= 0x00000000;
79 context |= 0x00010000;
81 case NVDEV_ENGINE_MPEG:
82 context |= 0x00020000;
88 context |= 0x80000000; /* valid */
89 context |= chid << 24;
91 mutex_lock(&nv_subdev(priv)->mutex);
92 ret = nouveau_ramht_insert(priv->ramht, chid, handle, context);
93 mutex_unlock(&nv_subdev(priv)->mutex);
98 nv04_fifo_object_detach(struct nouveau_object *parent, int cookie)
100 struct nv04_fifo_priv *priv = (void *)parent->engine;
101 mutex_lock(&nv_subdev(priv)->mutex);
102 nouveau_ramht_remove(priv->ramht, cookie);
103 mutex_unlock(&nv_subdev(priv)->mutex);
107 nv04_fifo_context_attach(struct nouveau_object *parent,
108 struct nouveau_object *object)
110 nv_engctx(object)->addr = nouveau_fifo_chan(parent)->chid;
115 nv04_fifo_chan_ctor(struct nouveau_object *parent,
116 struct nouveau_object *engine,
117 struct nouveau_oclass *oclass, void *data, u32 size,
118 struct nouveau_object **pobject)
120 struct nv04_fifo_priv *priv = (void *)engine;
121 struct nv04_fifo_chan *chan;
122 struct nv03_channel_dma_class *args = data;
125 if (size < sizeof(*args))
128 ret = nouveau_fifo_channel_create(parent, engine, oclass, 0, 0x800000,
129 0x10000, args->pushbuf,
130 (1ULL << NVDEV_ENGINE_DMAOBJ) |
131 (1ULL << NVDEV_ENGINE_SW) |
132 (1ULL << NVDEV_ENGINE_GR), &chan);
133 *pobject = nv_object(chan);
137 nv_parent(chan)->object_attach = nv04_fifo_object_attach;
138 nv_parent(chan)->object_detach = nv04_fifo_object_detach;
139 nv_parent(chan)->context_attach = nv04_fifo_context_attach;
140 chan->ramfc = chan->base.chid * 32;
142 nv_wo32(priv->ramfc, chan->ramfc + 0x00, args->offset);
143 nv_wo32(priv->ramfc, chan->ramfc + 0x04, args->offset);
144 nv_wo32(priv->ramfc, chan->ramfc + 0x08, chan->base.pushgpu->addr >> 4);
145 nv_wo32(priv->ramfc, chan->ramfc + 0x10,
146 NV_PFIFO_CACHE1_DMA_FETCH_TRIG_128_BYTES |
147 NV_PFIFO_CACHE1_DMA_FETCH_SIZE_128_BYTES |
149 NV_PFIFO_CACHE1_BIG_ENDIAN |
151 NV_PFIFO_CACHE1_DMA_FETCH_MAX_REQS_8);
156 nv04_fifo_chan_dtor(struct nouveau_object *object)
158 struct nv04_fifo_priv *priv = (void *)object->engine;
159 struct nv04_fifo_chan *chan = (void *)object;
160 struct ramfc_desc *c = priv->ramfc_desc;
163 nv_wo32(priv->ramfc, chan->ramfc + c->ctxp, 0x00000000);
164 } while ((++c)->bits);
166 nouveau_fifo_channel_destroy(&chan->base);
170 nv04_fifo_chan_init(struct nouveau_object *object)
172 struct nv04_fifo_priv *priv = (void *)object->engine;
173 struct nv04_fifo_chan *chan = (void *)object;
174 u32 mask = 1 << chan->base.chid;
178 ret = nouveau_fifo_channel_init(&chan->base);
182 spin_lock_irqsave(&priv->base.lock, flags);
183 nv_mask(priv, NV04_PFIFO_MODE, mask, mask);
184 spin_unlock_irqrestore(&priv->base.lock, flags);
189 nv04_fifo_chan_fini(struct nouveau_object *object, bool suspend)
191 struct nv04_fifo_priv *priv = (void *)object->engine;
192 struct nv04_fifo_chan *chan = (void *)object;
193 struct nouveau_gpuobj *fctx = priv->ramfc;
194 struct ramfc_desc *c;
196 u32 data = chan->ramfc;
199 /* prevent fifo context switches */
200 spin_lock_irqsave(&priv->base.lock, flags);
201 nv_wr32(priv, NV03_PFIFO_CACHES, 0);
203 /* if this channel is active, replace it with a null context */
204 chid = nv_rd32(priv, NV03_PFIFO_CACHE1_PUSH1) & priv->base.max;
205 if (chid == chan->base.chid) {
206 nv_mask(priv, NV04_PFIFO_CACHE1_DMA_PUSH, 0x00000001, 0);
207 nv_wr32(priv, NV03_PFIFO_CACHE1_PUSH0, 0);
208 nv_mask(priv, NV04_PFIFO_CACHE1_PULL0, 0x00000001, 0);
210 c = priv->ramfc_desc;
212 u32 rm = ((1ULL << c->bits) - 1) << c->regs;
213 u32 cm = ((1ULL << c->bits) - 1) << c->ctxs;
214 u32 rv = (nv_rd32(priv, c->regp) & rm) >> c->regs;
215 u32 cv = (nv_ro32(fctx, c->ctxp + data) & ~cm);
216 nv_wo32(fctx, c->ctxp + data, cv | (rv << c->ctxs));
217 } while ((++c)->bits);
219 c = priv->ramfc_desc;
221 nv_wr32(priv, c->regp, 0x00000000);
222 } while ((++c)->bits);
224 nv_wr32(priv, NV03_PFIFO_CACHE1_GET, 0);
225 nv_wr32(priv, NV03_PFIFO_CACHE1_PUT, 0);
226 nv_wr32(priv, NV03_PFIFO_CACHE1_PUSH1, priv->base.max);
227 nv_wr32(priv, NV03_PFIFO_CACHE1_PUSH0, 1);
228 nv_wr32(priv, NV04_PFIFO_CACHE1_PULL0, 1);
231 /* restore normal operation, after disabling dma mode */
232 nv_mask(priv, NV04_PFIFO_MODE, 1 << chan->base.chid, 0);
233 nv_wr32(priv, NV03_PFIFO_CACHES, 1);
234 spin_unlock_irqrestore(&priv->base.lock, flags);
236 return nouveau_fifo_channel_fini(&chan->base, suspend);
239 static struct nouveau_ofuncs
241 .ctor = nv04_fifo_chan_ctor,
242 .dtor = nv04_fifo_chan_dtor,
243 .init = nv04_fifo_chan_init,
244 .fini = nv04_fifo_chan_fini,
245 .rd32 = _nouveau_fifo_channel_rd32,
246 .wr32 = _nouveau_fifo_channel_wr32,
249 static struct nouveau_oclass
250 nv04_fifo_sclass[] = {
251 { NV03_CHANNEL_DMA_CLASS, &nv04_fifo_ofuncs },
255 /*******************************************************************************
256 * FIFO context - basically just the instmem reserved for the channel
257 ******************************************************************************/
260 nv04_fifo_context_ctor(struct nouveau_object *parent,
261 struct nouveau_object *engine,
262 struct nouveau_oclass *oclass, void *data, u32 size,
263 struct nouveau_object **pobject)
265 struct nv04_fifo_base *base;
268 ret = nouveau_fifo_context_create(parent, engine, oclass, NULL, 0x1000,
269 0x1000, NVOBJ_FLAG_HEAP, &base);
270 *pobject = nv_object(base);
277 static struct nouveau_oclass
279 .handle = NV_ENGCTX(FIFO, 0x04),
280 .ofuncs = &(struct nouveau_ofuncs) {
281 .ctor = nv04_fifo_context_ctor,
282 .dtor = _nouveau_fifo_context_dtor,
283 .init = _nouveau_fifo_context_init,
284 .fini = _nouveau_fifo_context_fini,
285 .rd32 = _nouveau_fifo_context_rd32,
286 .wr32 = _nouveau_fifo_context_wr32,
290 /*******************************************************************************
292 ******************************************************************************/
295 nv04_fifo_pause(struct nouveau_fifo *pfifo, unsigned long *pflags)
296 __acquires(priv->base.lock)
298 struct nv04_fifo_priv *priv = (void *)pfifo;
301 spin_lock_irqsave(&priv->base.lock, flags);
304 nv_wr32(priv, NV03_PFIFO_CACHES, 0x00000000);
305 nv_mask(priv, NV04_PFIFO_CACHE1_PULL0, 0x00000001, 0x00000000);
307 /* in some cases the puller may be left in an inconsistent state
308 * if you try to stop it while it's busy translating handles.
309 * sometimes you get a CACHE_ERROR, sometimes it just fails
310 * silently; sending incorrect instance offsets to PGRAPH after
311 * it's started up again.
313 * to avoid this, we invalidate the most recently calculated
316 if (!nv_wait(priv, NV04_PFIFO_CACHE1_PULL0,
317 NV04_PFIFO_CACHE1_PULL0_HASH_BUSY, 0x00000000))
318 nv_warn(priv, "timeout idling puller\n");
320 if (nv_rd32(priv, NV04_PFIFO_CACHE1_PULL0) &
321 NV04_PFIFO_CACHE1_PULL0_HASH_FAILED)
322 nv_wr32(priv, NV03_PFIFO_INTR_0, NV_PFIFO_INTR_CACHE_ERROR);
324 nv_wr32(priv, NV04_PFIFO_CACHE1_HASH, 0x00000000);
328 nv04_fifo_start(struct nouveau_fifo *pfifo, unsigned long *pflags)
329 __releases(priv->base.lock)
331 struct nv04_fifo_priv *priv = (void *)pfifo;
332 unsigned long flags = *pflags;
334 nv_mask(priv, NV04_PFIFO_CACHE1_PULL0, 0x00000001, 0x00000001);
335 nv_wr32(priv, NV03_PFIFO_CACHES, 0x00000001);
337 spin_unlock_irqrestore(&priv->base.lock, flags);
341 nv_dma_state_err(u32 state)
343 static const char * const desc[] = {
344 "NONE", "CALL_SUBR_ACTIVE", "INVALID_MTHD", "RET_SUBR_INACTIVE",
345 "INVALID_CMD", "IB_EMPTY"/* NV50+ */, "MEM_FAULT", "UNK"
347 return desc[(state >> 29) & 0x7];
351 nv04_fifo_swmthd(struct nv04_fifo_priv *priv, u32 chid, u32 addr, u32 data)
353 struct nv04_fifo_chan *chan = NULL;
354 struct nouveau_handle *bind;
355 const int subc = (addr >> 13) & 0x7;
356 const int mthd = addr & 0x1ffc;
357 bool handled = false;
361 spin_lock_irqsave(&priv->base.lock, flags);
362 if (likely(chid >= priv->base.min && chid <= priv->base.max))
363 chan = (void *)priv->base.channel[chid];
369 bind = nouveau_namedb_get(nv_namedb(chan), data);
373 if (nv_engidx(bind->object->engine) == NVDEV_ENGINE_SW) {
374 engine = 0x0000000f << (subc * 4);
375 chan->subc[subc] = data;
378 nv_mask(priv, NV04_PFIFO_CACHE1_ENGINE, engine, 0);
381 nouveau_namedb_put(bind);
384 engine = nv_rd32(priv, NV04_PFIFO_CACHE1_ENGINE);
385 if (unlikely(((engine >> (subc * 4)) & 0xf) != 0))
388 bind = nouveau_namedb_get(nv_namedb(chan), chan->subc[subc]);
390 if (!nv_call(bind->object, mthd, data))
392 nouveau_namedb_put(bind);
398 spin_unlock_irqrestore(&priv->base.lock, flags);
403 nv04_fifo_cache_error(struct nouveau_device *device,
404 struct nv04_fifo_priv *priv, u32 chid, u32 get)
409 /* NV_PFIFO_CACHE1_GET actually goes to 0xffc before wrapping on my
410 * G80 chips, but CACHE1 isn't big enough for this much data.. Tests
411 * show that it wraps around to the start at GET=0x800.. No clue as to
414 ptr = (get & 0x7ff) >> 2;
416 if (device->card_type < NV_40) {
417 mthd = nv_rd32(priv, NV04_PFIFO_CACHE1_METHOD(ptr));
418 data = nv_rd32(priv, NV04_PFIFO_CACHE1_DATA(ptr));
420 mthd = nv_rd32(priv, NV40_PFIFO_CACHE1_METHOD(ptr));
421 data = nv_rd32(priv, NV40_PFIFO_CACHE1_DATA(ptr));
424 if (!nv04_fifo_swmthd(priv, chid, mthd, data)) {
425 const char *client_name =
426 nouveau_client_name_for_fifo_chid(&priv->base, chid);
428 "CACHE_ERROR - ch %d [%s] subc %d mthd 0x%04x data 0x%08x\n",
429 chid, client_name, (mthd >> 13) & 7, mthd & 0x1ffc,
433 nv_wr32(priv, NV04_PFIFO_CACHE1_DMA_PUSH, 0);
434 nv_wr32(priv, NV03_PFIFO_INTR_0, NV_PFIFO_INTR_CACHE_ERROR);
436 nv_wr32(priv, NV03_PFIFO_CACHE1_PUSH0,
437 nv_rd32(priv, NV03_PFIFO_CACHE1_PUSH0) & ~1);
438 nv_wr32(priv, NV03_PFIFO_CACHE1_GET, get + 4);
439 nv_wr32(priv, NV03_PFIFO_CACHE1_PUSH0,
440 nv_rd32(priv, NV03_PFIFO_CACHE1_PUSH0) | 1);
441 nv_wr32(priv, NV04_PFIFO_CACHE1_HASH, 0);
443 nv_wr32(priv, NV04_PFIFO_CACHE1_DMA_PUSH,
444 nv_rd32(priv, NV04_PFIFO_CACHE1_DMA_PUSH) | 1);
445 nv_wr32(priv, NV04_PFIFO_CACHE1_PULL0, 1);
449 nv04_fifo_dma_pusher(struct nouveau_device *device, struct nv04_fifo_priv *priv,
452 const char *client_name;
453 u32 dma_get = nv_rd32(priv, 0x003244);
454 u32 dma_put = nv_rd32(priv, 0x003240);
455 u32 push = nv_rd32(priv, 0x003220);
456 u32 state = nv_rd32(priv, 0x003228);
458 client_name = nouveau_client_name_for_fifo_chid(&priv->base, chid);
460 if (device->card_type == NV_50) {
461 u32 ho_get = nv_rd32(priv, 0x003328);
462 u32 ho_put = nv_rd32(priv, 0x003320);
463 u32 ib_get = nv_rd32(priv, 0x003334);
464 u32 ib_put = nv_rd32(priv, 0x003330);
467 "DMA_PUSHER - ch %d [%s] get 0x%02x%08x put 0x%02x%08x ib_get 0x%08x ib_put 0x%08x state 0x%08x (err: %s) push 0x%08x\n",
468 chid, client_name, ho_get, dma_get, ho_put, dma_put,
469 ib_get, ib_put, state, nv_dma_state_err(state), push);
471 /* METHOD_COUNT, in DMA_STATE on earlier chipsets */
472 nv_wr32(priv, 0x003364, 0x00000000);
473 if (dma_get != dma_put || ho_get != ho_put) {
474 nv_wr32(priv, 0x003244, dma_put);
475 nv_wr32(priv, 0x003328, ho_put);
477 if (ib_get != ib_put)
478 nv_wr32(priv, 0x003334, ib_put);
481 "DMA_PUSHER - ch %d [%s] get 0x%08x put 0x%08x state 0x%08x (err: %s) push 0x%08x\n",
482 chid, client_name, dma_get, dma_put, state,
483 nv_dma_state_err(state), push);
485 if (dma_get != dma_put)
486 nv_wr32(priv, 0x003244, dma_put);
489 nv_wr32(priv, 0x003228, 0x00000000);
490 nv_wr32(priv, 0x003220, 0x00000001);
491 nv_wr32(priv, 0x002100, NV_PFIFO_INTR_DMA_PUSHER);
495 nv04_fifo_intr(struct nouveau_subdev *subdev)
497 struct nouveau_device *device = nv_device(subdev);
498 struct nv04_fifo_priv *priv = (void *)subdev;
499 uint32_t status, reassign;
502 reassign = nv_rd32(priv, NV03_PFIFO_CACHES) & 1;
503 while ((status = nv_rd32(priv, NV03_PFIFO_INTR_0)) && (cnt++ < 100)) {
506 nv_wr32(priv, NV03_PFIFO_CACHES, 0);
508 chid = nv_rd32(priv, NV03_PFIFO_CACHE1_PUSH1) & priv->base.max;
509 get = nv_rd32(priv, NV03_PFIFO_CACHE1_GET);
511 if (status & NV_PFIFO_INTR_CACHE_ERROR) {
512 nv04_fifo_cache_error(device, priv, chid, get);
513 status &= ~NV_PFIFO_INTR_CACHE_ERROR;
516 if (status & NV_PFIFO_INTR_DMA_PUSHER) {
517 nv04_fifo_dma_pusher(device, priv, chid);
518 status &= ~NV_PFIFO_INTR_DMA_PUSHER;
521 if (status & NV_PFIFO_INTR_SEMAPHORE) {
524 status &= ~NV_PFIFO_INTR_SEMAPHORE;
525 nv_wr32(priv, NV03_PFIFO_INTR_0,
526 NV_PFIFO_INTR_SEMAPHORE);
528 sem = nv_rd32(priv, NV10_PFIFO_CACHE1_SEMAPHORE);
529 nv_wr32(priv, NV10_PFIFO_CACHE1_SEMAPHORE, sem | 0x1);
531 nv_wr32(priv, NV03_PFIFO_CACHE1_GET, get + 4);
532 nv_wr32(priv, NV04_PFIFO_CACHE1_PULL0, 1);
535 if (device->card_type == NV_50) {
536 if (status & 0x00000010) {
537 status &= ~0x00000010;
538 nv_wr32(priv, 0x002100, 0x00000010);
541 if (status & 0x40000000) {
542 nouveau_event_trigger(priv->base.uevent, 0);
543 nv_wr32(priv, 0x002100, 0x40000000);
544 status &= ~0x40000000;
549 nv_warn(priv, "unknown intr 0x%08x, ch %d\n",
551 nv_wr32(priv, NV03_PFIFO_INTR_0, status);
555 nv_wr32(priv, NV03_PFIFO_CACHES, reassign);
559 nv_error(priv, "still angry after %d spins, halt\n", cnt);
560 nv_wr32(priv, 0x002140, 0);
561 nv_wr32(priv, 0x000140, 0);
564 nv_wr32(priv, 0x000100, 0x00000100);
568 nv04_fifo_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
569 struct nouveau_oclass *oclass, void *data, u32 size,
570 struct nouveau_object **pobject)
572 struct nv04_instmem_priv *imem = nv04_instmem(parent);
573 struct nv04_fifo_priv *priv;
576 ret = nouveau_fifo_create(parent, engine, oclass, 0, 15, &priv);
577 *pobject = nv_object(priv);
581 nouveau_ramht_ref(imem->ramht, &priv->ramht);
582 nouveau_gpuobj_ref(imem->ramro, &priv->ramro);
583 nouveau_gpuobj_ref(imem->ramfc, &priv->ramfc);
585 nv_subdev(priv)->unit = 0x00000100;
586 nv_subdev(priv)->intr = nv04_fifo_intr;
587 nv_engine(priv)->cclass = &nv04_fifo_cclass;
588 nv_engine(priv)->sclass = nv04_fifo_sclass;
589 priv->base.pause = nv04_fifo_pause;
590 priv->base.start = nv04_fifo_start;
591 priv->ramfc_desc = nv04_ramfc;
596 nv04_fifo_dtor(struct nouveau_object *object)
598 struct nv04_fifo_priv *priv = (void *)object;
599 nouveau_gpuobj_ref(NULL, &priv->ramfc);
600 nouveau_gpuobj_ref(NULL, &priv->ramro);
601 nouveau_ramht_ref(NULL, &priv->ramht);
602 nouveau_fifo_destroy(&priv->base);
606 nv04_fifo_init(struct nouveau_object *object)
608 struct nv04_fifo_priv *priv = (void *)object;
611 ret = nouveau_fifo_init(&priv->base);
615 nv_wr32(priv, NV04_PFIFO_DELAY_0, 0x000000ff);
616 nv_wr32(priv, NV04_PFIFO_DMA_TIMESLICE, 0x0101ffff);
618 nv_wr32(priv, NV03_PFIFO_RAMHT, (0x03 << 24) /* search 128 */ |
619 ((priv->ramht->bits - 9) << 16) |
620 (priv->ramht->base.addr >> 8));
621 nv_wr32(priv, NV03_PFIFO_RAMRO, priv->ramro->addr >> 8);
622 nv_wr32(priv, NV03_PFIFO_RAMFC, priv->ramfc->addr >> 8);
624 nv_wr32(priv, NV03_PFIFO_CACHE1_PUSH1, priv->base.max);
626 nv_wr32(priv, NV03_PFIFO_INTR_0, 0xffffffff);
627 nv_wr32(priv, NV03_PFIFO_INTR_EN_0, 0xffffffff);
629 nv_wr32(priv, NV03_PFIFO_CACHE1_PUSH0, 1);
630 nv_wr32(priv, NV04_PFIFO_CACHE1_PULL0, 1);
631 nv_wr32(priv, NV03_PFIFO_CACHES, 1);
635 struct nouveau_oclass
637 .handle = NV_ENGINE(FIFO, 0x04),
638 .ofuncs = &(struct nouveau_ofuncs) {
639 .ctor = nv04_fifo_ctor,
640 .dtor = nv04_fifo_dtor,
641 .init = nv04_fifo_init,
642 .fini = _nouveau_fifo_fini,