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1 /*
2  * Copyright 2012 Red Hat Inc.
3  *
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:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
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.
21  *
22  * Authors: Ben Skeggs
23  */
24 
25 #include <core/client.h>
26 #include <core/os.h>
27 #include <core/class.h>
28 #include <core/handle.h>
29 #include <core/engctx.h>
30 
31 #include <subdev/fb.h>
32 #include <subdev/timer.h>
33 
34 #include <engine/graph.h>
35 #include <engine/fifo.h>
36 
37 #include "nv40.h"
38 #include "regs.h"
39 
40 struct nv40_graph_priv {
41 	struct nouveau_graph base;
42 	u32 size;
43 };
44 
45 struct nv40_graph_chan {
46 	struct nouveau_graph_chan base;
47 };
48 
49 static u64
nv40_graph_units(struct nouveau_graph * graph)50 nv40_graph_units(struct nouveau_graph *graph)
51 {
52 	struct nv40_graph_priv *priv = (void *)graph;
53 
54 	return nv_rd32(priv, 0x1540);
55 }
56 
57 /*******************************************************************************
58  * Graphics object classes
59  ******************************************************************************/
60 
61 static int
nv40_graph_object_ctor(struct nouveau_object * parent,struct nouveau_object * engine,struct nouveau_oclass * oclass,void * data,u32 size,struct nouveau_object ** pobject)62 nv40_graph_object_ctor(struct nouveau_object *parent,
63 		       struct nouveau_object *engine,
64 		       struct nouveau_oclass *oclass, void *data, u32 size,
65 		       struct nouveau_object **pobject)
66 {
67 	struct nouveau_gpuobj *obj;
68 	int ret;
69 
70 	ret = nouveau_gpuobj_create(parent, engine, oclass, 0, parent,
71 				    20, 16, 0, &obj);
72 	*pobject = nv_object(obj);
73 	if (ret)
74 		return ret;
75 
76 	nv_wo32(obj, 0x00, nv_mclass(obj));
77 	nv_wo32(obj, 0x04, 0x00000000);
78 	nv_wo32(obj, 0x08, 0x00000000);
79 #ifdef __BIG_ENDIAN
80 	nv_mo32(obj, 0x08, 0x01000000, 0x01000000);
81 #endif
82 	nv_wo32(obj, 0x0c, 0x00000000);
83 	nv_wo32(obj, 0x10, 0x00000000);
84 	return 0;
85 }
86 
87 static struct nouveau_ofuncs
88 nv40_graph_ofuncs = {
89 	.ctor = nv40_graph_object_ctor,
90 	.dtor = _nouveau_gpuobj_dtor,
91 	.init = _nouveau_gpuobj_init,
92 	.fini = _nouveau_gpuobj_fini,
93 	.rd32 = _nouveau_gpuobj_rd32,
94 	.wr32 = _nouveau_gpuobj_wr32,
95 };
96 
97 static struct nouveau_oclass
98 nv40_graph_sclass[] = {
99 	{ 0x0012, &nv40_graph_ofuncs, NULL }, /* beta1 */
100 	{ 0x0019, &nv40_graph_ofuncs, NULL }, /* clip */
101 	{ 0x0030, &nv40_graph_ofuncs, NULL }, /* null */
102 	{ 0x0039, &nv40_graph_ofuncs, NULL }, /* m2mf */
103 	{ 0x0043, &nv40_graph_ofuncs, NULL }, /* rop */
104 	{ 0x0044, &nv40_graph_ofuncs, NULL }, /* patt */
105 	{ 0x004a, &nv40_graph_ofuncs, NULL }, /* gdi */
106 	{ 0x0062, &nv40_graph_ofuncs, NULL }, /* surf2d */
107 	{ 0x0072, &nv40_graph_ofuncs, NULL }, /* beta4 */
108 	{ 0x0089, &nv40_graph_ofuncs, NULL }, /* sifm */
109 	{ 0x008a, &nv40_graph_ofuncs, NULL }, /* ifc */
110 	{ 0x009f, &nv40_graph_ofuncs, NULL }, /* imageblit */
111 	{ 0x3062, &nv40_graph_ofuncs, NULL }, /* surf2d (nv40) */
112 	{ 0x3089, &nv40_graph_ofuncs, NULL }, /* sifm (nv40) */
113 	{ 0x309e, &nv40_graph_ofuncs, NULL }, /* swzsurf (nv40) */
114 	{ 0x4097, &nv40_graph_ofuncs, NULL }, /* curie */
115 	{},
116 };
117 
118 static struct nouveau_oclass
119 nv44_graph_sclass[] = {
120 	{ 0x0012, &nv40_graph_ofuncs, NULL }, /* beta1 */
121 	{ 0x0019, &nv40_graph_ofuncs, NULL }, /* clip */
122 	{ 0x0030, &nv40_graph_ofuncs, NULL }, /* null */
123 	{ 0x0039, &nv40_graph_ofuncs, NULL }, /* m2mf */
124 	{ 0x0043, &nv40_graph_ofuncs, NULL }, /* rop */
125 	{ 0x0044, &nv40_graph_ofuncs, NULL }, /* patt */
126 	{ 0x004a, &nv40_graph_ofuncs, NULL }, /* gdi */
127 	{ 0x0062, &nv40_graph_ofuncs, NULL }, /* surf2d */
128 	{ 0x0072, &nv40_graph_ofuncs, NULL }, /* beta4 */
129 	{ 0x0089, &nv40_graph_ofuncs, NULL }, /* sifm */
130 	{ 0x008a, &nv40_graph_ofuncs, NULL }, /* ifc */
131 	{ 0x009f, &nv40_graph_ofuncs, NULL }, /* imageblit */
132 	{ 0x3062, &nv40_graph_ofuncs, NULL }, /* surf2d (nv40) */
133 	{ 0x3089, &nv40_graph_ofuncs, NULL }, /* sifm (nv40) */
134 	{ 0x309e, &nv40_graph_ofuncs, NULL }, /* swzsurf (nv40) */
135 	{ 0x4497, &nv40_graph_ofuncs, NULL }, /* curie */
136 	{},
137 };
138 
139 /*******************************************************************************
140  * PGRAPH context
141  ******************************************************************************/
142 
143 static int
nv40_graph_context_ctor(struct nouveau_object * parent,struct nouveau_object * engine,struct nouveau_oclass * oclass,void * data,u32 size,struct nouveau_object ** pobject)144 nv40_graph_context_ctor(struct nouveau_object *parent,
145 			struct nouveau_object *engine,
146 			struct nouveau_oclass *oclass, void *data, u32 size,
147 			struct nouveau_object **pobject)
148 {
149 	struct nv40_graph_priv *priv = (void *)engine;
150 	struct nv40_graph_chan *chan;
151 	int ret;
152 
153 	ret = nouveau_graph_context_create(parent, engine, oclass, NULL,
154 					   priv->size, 16,
155 					   NVOBJ_FLAG_ZERO_ALLOC, &chan);
156 	*pobject = nv_object(chan);
157 	if (ret)
158 		return ret;
159 
160 	nv40_grctx_fill(nv_device(priv), nv_gpuobj(chan));
161 	nv_wo32(chan, 0x00000, nv_gpuobj(chan)->addr >> 4);
162 	return 0;
163 }
164 
165 static int
nv40_graph_context_fini(struct nouveau_object * object,bool suspend)166 nv40_graph_context_fini(struct nouveau_object *object, bool suspend)
167 {
168 	struct nv40_graph_priv *priv = (void *)object->engine;
169 	struct nv40_graph_chan *chan = (void *)object;
170 	u32 inst = 0x01000000 | nv_gpuobj(chan)->addr >> 4;
171 	int ret = 0;
172 
173 	nv_mask(priv, 0x400720, 0x00000001, 0x00000000);
174 
175 	if (nv_rd32(priv, 0x40032c) == inst) {
176 		if (suspend) {
177 			nv_wr32(priv, 0x400720, 0x00000000);
178 			nv_wr32(priv, 0x400784, inst);
179 			nv_mask(priv, 0x400310, 0x00000020, 0x00000020);
180 			nv_mask(priv, 0x400304, 0x00000001, 0x00000001);
181 			if (!nv_wait(priv, 0x400300, 0x00000001, 0x00000000)) {
182 				u32 insn = nv_rd32(priv, 0x400308);
183 				nv_warn(priv, "ctxprog timeout 0x%08x\n", insn);
184 				ret = -EBUSY;
185 			}
186 		}
187 
188 		nv_mask(priv, 0x40032c, 0x01000000, 0x00000000);
189 	}
190 
191 	if (nv_rd32(priv, 0x400330) == inst)
192 		nv_mask(priv, 0x400330, 0x01000000, 0x00000000);
193 
194 	nv_mask(priv, 0x400720, 0x00000001, 0x00000001);
195 	return ret;
196 }
197 
198 static struct nouveau_oclass
199 nv40_graph_cclass = {
200 	.handle = NV_ENGCTX(GR, 0x40),
201 	.ofuncs = &(struct nouveau_ofuncs) {
202 		.ctor = nv40_graph_context_ctor,
203 		.dtor = _nouveau_graph_context_dtor,
204 		.init = _nouveau_graph_context_init,
205 		.fini = nv40_graph_context_fini,
206 		.rd32 = _nouveau_graph_context_rd32,
207 		.wr32 = _nouveau_graph_context_wr32,
208 	},
209 };
210 
211 /*******************************************************************************
212  * PGRAPH engine/subdev functions
213  ******************************************************************************/
214 
215 static void
nv40_graph_tile_prog(struct nouveau_engine * engine,int i)216 nv40_graph_tile_prog(struct nouveau_engine *engine, int i)
217 {
218 	struct nouveau_fb_tile *tile = &nouveau_fb(engine)->tile.region[i];
219 	struct nouveau_fifo *pfifo = nouveau_fifo(engine);
220 	struct nv40_graph_priv *priv = (void *)engine;
221 	unsigned long flags;
222 
223 	pfifo->pause(pfifo, &flags);
224 	nv04_graph_idle(priv);
225 
226 	switch (nv_device(priv)->chipset) {
227 	case 0x40:
228 	case 0x41:
229 	case 0x42:
230 	case 0x43:
231 	case 0x45:
232 	case 0x4e:
233 		nv_wr32(priv, NV20_PGRAPH_TSIZE(i), tile->pitch);
234 		nv_wr32(priv, NV20_PGRAPH_TLIMIT(i), tile->limit);
235 		nv_wr32(priv, NV20_PGRAPH_TILE(i), tile->addr);
236 		nv_wr32(priv, NV40_PGRAPH_TSIZE1(i), tile->pitch);
237 		nv_wr32(priv, NV40_PGRAPH_TLIMIT1(i), tile->limit);
238 		nv_wr32(priv, NV40_PGRAPH_TILE1(i), tile->addr);
239 		switch (nv_device(priv)->chipset) {
240 		case 0x40:
241 		case 0x45:
242 			nv_wr32(priv, NV20_PGRAPH_ZCOMP(i), tile->zcomp);
243 			nv_wr32(priv, NV40_PGRAPH_ZCOMP1(i), tile->zcomp);
244 			break;
245 		case 0x41:
246 		case 0x42:
247 		case 0x43:
248 			nv_wr32(priv, NV41_PGRAPH_ZCOMP0(i), tile->zcomp);
249 			nv_wr32(priv, NV41_PGRAPH_ZCOMP1(i), tile->zcomp);
250 			break;
251 		default:
252 			break;
253 		}
254 		break;
255 	case 0x44:
256 	case 0x4a:
257 		nv_wr32(priv, NV20_PGRAPH_TSIZE(i), tile->pitch);
258 		nv_wr32(priv, NV20_PGRAPH_TLIMIT(i), tile->limit);
259 		nv_wr32(priv, NV20_PGRAPH_TILE(i), tile->addr);
260 		break;
261 	case 0x46:
262 	case 0x4c:
263 	case 0x47:
264 	case 0x49:
265 	case 0x4b:
266 	case 0x63:
267 	case 0x67:
268 	case 0x68:
269 		nv_wr32(priv, NV47_PGRAPH_TSIZE(i), tile->pitch);
270 		nv_wr32(priv, NV47_PGRAPH_TLIMIT(i), tile->limit);
271 		nv_wr32(priv, NV47_PGRAPH_TILE(i), tile->addr);
272 		nv_wr32(priv, NV40_PGRAPH_TSIZE1(i), tile->pitch);
273 		nv_wr32(priv, NV40_PGRAPH_TLIMIT1(i), tile->limit);
274 		nv_wr32(priv, NV40_PGRAPH_TILE1(i), tile->addr);
275 		switch (nv_device(priv)->chipset) {
276 		case 0x47:
277 		case 0x49:
278 		case 0x4b:
279 			nv_wr32(priv, NV47_PGRAPH_ZCOMP0(i), tile->zcomp);
280 			nv_wr32(priv, NV47_PGRAPH_ZCOMP1(i), tile->zcomp);
281 			break;
282 		default:
283 			break;
284 		}
285 		break;
286 	default:
287 		break;
288 	}
289 
290 	pfifo->start(pfifo, &flags);
291 }
292 
293 static void
nv40_graph_intr(struct nouveau_subdev * subdev)294 nv40_graph_intr(struct nouveau_subdev *subdev)
295 {
296 	struct nouveau_fifo *pfifo = nouveau_fifo(subdev);
297 	struct nouveau_engine *engine = nv_engine(subdev);
298 	struct nouveau_object *engctx;
299 	struct nouveau_handle *handle = NULL;
300 	struct nv40_graph_priv *priv = (void *)subdev;
301 	u32 stat = nv_rd32(priv, NV03_PGRAPH_INTR);
302 	u32 nsource = nv_rd32(priv, NV03_PGRAPH_NSOURCE);
303 	u32 nstatus = nv_rd32(priv, NV03_PGRAPH_NSTATUS);
304 	u32 inst = nv_rd32(priv, 0x40032c) & 0x000fffff;
305 	u32 addr = nv_rd32(priv, NV04_PGRAPH_TRAPPED_ADDR);
306 	u32 subc = (addr & 0x00070000) >> 16;
307 	u32 mthd = (addr & 0x00001ffc);
308 	u32 data = nv_rd32(priv, NV04_PGRAPH_TRAPPED_DATA);
309 	u32 class = nv_rd32(priv, 0x400160 + subc * 4) & 0xffff;
310 	u32 show = stat;
311 	int chid;
312 
313 	engctx = nouveau_engctx_get(engine, inst);
314 	chid   = pfifo->chid(pfifo, engctx);
315 
316 	if (stat & NV_PGRAPH_INTR_ERROR) {
317 		if (nsource & NV03_PGRAPH_NSOURCE_ILLEGAL_MTHD) {
318 			handle = nouveau_handle_get_class(engctx, class);
319 			if (handle && !nv_call(handle->object, mthd, data))
320 				show &= ~NV_PGRAPH_INTR_ERROR;
321 			nouveau_handle_put(handle);
322 		}
323 
324 		if (nsource & NV03_PGRAPH_NSOURCE_DMA_VTX_PROTECTION) {
325 			nv_mask(priv, 0x402000, 0, 0);
326 		}
327 	}
328 
329 	nv_wr32(priv, NV03_PGRAPH_INTR, stat);
330 	nv_wr32(priv, NV04_PGRAPH_FIFO, 0x00000001);
331 
332 	if (show) {
333 		nv_error(priv, "%s", "");
334 		nouveau_bitfield_print(nv10_graph_intr_name, show);
335 		pr_cont(" nsource:");
336 		nouveau_bitfield_print(nv04_graph_nsource, nsource);
337 		pr_cont(" nstatus:");
338 		nouveau_bitfield_print(nv10_graph_nstatus, nstatus);
339 		pr_cont("\n");
340 		nv_error(priv,
341 			 "ch %d [0x%08x %s] subc %d class 0x%04x mthd 0x%04x data 0x%08x\n",
342 			 chid, inst << 4, nouveau_client_name(engctx), subc,
343 			 class, mthd, data);
344 	}
345 
346 	nouveau_engctx_put(engctx);
347 }
348 
349 static int
nv40_graph_ctor(struct nouveau_object * parent,struct nouveau_object * engine,struct nouveau_oclass * oclass,void * data,u32 size,struct nouveau_object ** pobject)350 nv40_graph_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
351 	       struct nouveau_oclass *oclass, void *data, u32 size,
352 	       struct nouveau_object **pobject)
353 {
354 	struct nv40_graph_priv *priv;
355 	int ret;
356 
357 	ret = nouveau_graph_create(parent, engine, oclass, true, &priv);
358 	*pobject = nv_object(priv);
359 	if (ret)
360 		return ret;
361 
362 	nv_subdev(priv)->unit = 0x00001000;
363 	nv_subdev(priv)->intr = nv40_graph_intr;
364 	nv_engine(priv)->cclass = &nv40_graph_cclass;
365 	if (nv44_graph_class(priv))
366 		nv_engine(priv)->sclass = nv44_graph_sclass;
367 	else
368 		nv_engine(priv)->sclass = nv40_graph_sclass;
369 	nv_engine(priv)->tile_prog = nv40_graph_tile_prog;
370 
371 	priv->base.units = nv40_graph_units;
372 	return 0;
373 }
374 
375 static int
nv40_graph_init(struct nouveau_object * object)376 nv40_graph_init(struct nouveau_object *object)
377 {
378 	struct nouveau_engine *engine = nv_engine(object);
379 	struct nouveau_fb *pfb = nouveau_fb(object);
380 	struct nv40_graph_priv *priv = (void *)engine;
381 	int ret, i, j;
382 	u32 vramsz;
383 
384 	ret = nouveau_graph_init(&priv->base);
385 	if (ret)
386 		return ret;
387 
388 	/* generate and upload context program */
389 	ret = nv40_grctx_init(nv_device(priv), &priv->size);
390 	if (ret)
391 		return ret;
392 
393 	/* No context present currently */
394 	nv_wr32(priv, NV40_PGRAPH_CTXCTL_CUR, 0x00000000);
395 
396 	nv_wr32(priv, NV03_PGRAPH_INTR   , 0xFFFFFFFF);
397 	nv_wr32(priv, NV40_PGRAPH_INTR_EN, 0xFFFFFFFF);
398 
399 	nv_wr32(priv, NV04_PGRAPH_DEBUG_0, 0xFFFFFFFF);
400 	nv_wr32(priv, NV04_PGRAPH_DEBUG_0, 0x00000000);
401 	nv_wr32(priv, NV04_PGRAPH_DEBUG_1, 0x401287c0);
402 	nv_wr32(priv, NV04_PGRAPH_DEBUG_3, 0xe0de8055);
403 	nv_wr32(priv, NV10_PGRAPH_DEBUG_4, 0x00008000);
404 	nv_wr32(priv, NV04_PGRAPH_LIMIT_VIOL_PIX, 0x00be3c5f);
405 
406 	nv_wr32(priv, NV10_PGRAPH_CTX_CONTROL, 0x10010100);
407 	nv_wr32(priv, NV10_PGRAPH_STATE      , 0xFFFFFFFF);
408 
409 	j = nv_rd32(priv, 0x1540) & 0xff;
410 	if (j) {
411 		for (i = 0; !(j & 1); j >>= 1, i++)
412 			;
413 		nv_wr32(priv, 0x405000, i);
414 	}
415 
416 	if (nv_device(priv)->chipset == 0x40) {
417 		nv_wr32(priv, 0x4009b0, 0x83280fff);
418 		nv_wr32(priv, 0x4009b4, 0x000000a0);
419 	} else {
420 		nv_wr32(priv, 0x400820, 0x83280eff);
421 		nv_wr32(priv, 0x400824, 0x000000a0);
422 	}
423 
424 	switch (nv_device(priv)->chipset) {
425 	case 0x40:
426 	case 0x45:
427 		nv_wr32(priv, 0x4009b8, 0x0078e366);
428 		nv_wr32(priv, 0x4009bc, 0x0000014c);
429 		break;
430 	case 0x41:
431 	case 0x42: /* pciid also 0x00Cx */
432 	/* case 0x0120: XXX (pciid) */
433 		nv_wr32(priv, 0x400828, 0x007596ff);
434 		nv_wr32(priv, 0x40082c, 0x00000108);
435 		break;
436 	case 0x43:
437 		nv_wr32(priv, 0x400828, 0x0072cb77);
438 		nv_wr32(priv, 0x40082c, 0x00000108);
439 		break;
440 	case 0x44:
441 	case 0x46: /* G72 */
442 	case 0x4a:
443 	case 0x4c: /* G7x-based C51 */
444 	case 0x4e:
445 		nv_wr32(priv, 0x400860, 0);
446 		nv_wr32(priv, 0x400864, 0);
447 		break;
448 	case 0x47: /* G70 */
449 	case 0x49: /* G71 */
450 	case 0x4b: /* G73 */
451 		nv_wr32(priv, 0x400828, 0x07830610);
452 		nv_wr32(priv, 0x40082c, 0x0000016A);
453 		break;
454 	default:
455 		break;
456 	}
457 
458 	nv_wr32(priv, 0x400b38, 0x2ffff800);
459 	nv_wr32(priv, 0x400b3c, 0x00006000);
460 
461 	/* Tiling related stuff. */
462 	switch (nv_device(priv)->chipset) {
463 	case 0x44:
464 	case 0x4a:
465 		nv_wr32(priv, 0x400bc4, 0x1003d888);
466 		nv_wr32(priv, 0x400bbc, 0xb7a7b500);
467 		break;
468 	case 0x46:
469 		nv_wr32(priv, 0x400bc4, 0x0000e024);
470 		nv_wr32(priv, 0x400bbc, 0xb7a7b520);
471 		break;
472 	case 0x4c:
473 	case 0x4e:
474 	case 0x67:
475 		nv_wr32(priv, 0x400bc4, 0x1003d888);
476 		nv_wr32(priv, 0x400bbc, 0xb7a7b540);
477 		break;
478 	default:
479 		break;
480 	}
481 
482 	/* Turn all the tiling regions off. */
483 	for (i = 0; i < pfb->tile.regions; i++)
484 		engine->tile_prog(engine, i);
485 
486 	/* begin RAM config */
487 	vramsz = pci_resource_len(nv_device(priv)->pdev, 0) - 1;
488 	switch (nv_device(priv)->chipset) {
489 	case 0x40:
490 		nv_wr32(priv, 0x4009A4, nv_rd32(priv, 0x100200));
491 		nv_wr32(priv, 0x4009A8, nv_rd32(priv, 0x100204));
492 		nv_wr32(priv, 0x4069A4, nv_rd32(priv, 0x100200));
493 		nv_wr32(priv, 0x4069A8, nv_rd32(priv, 0x100204));
494 		nv_wr32(priv, 0x400820, 0);
495 		nv_wr32(priv, 0x400824, 0);
496 		nv_wr32(priv, 0x400864, vramsz);
497 		nv_wr32(priv, 0x400868, vramsz);
498 		break;
499 	default:
500 		switch (nv_device(priv)->chipset) {
501 		case 0x41:
502 		case 0x42:
503 		case 0x43:
504 		case 0x45:
505 		case 0x4e:
506 		case 0x44:
507 		case 0x4a:
508 			nv_wr32(priv, 0x4009F0, nv_rd32(priv, 0x100200));
509 			nv_wr32(priv, 0x4009F4, nv_rd32(priv, 0x100204));
510 			break;
511 		default:
512 			nv_wr32(priv, 0x400DF0, nv_rd32(priv, 0x100200));
513 			nv_wr32(priv, 0x400DF4, nv_rd32(priv, 0x100204));
514 			break;
515 		}
516 		nv_wr32(priv, 0x4069F0, nv_rd32(priv, 0x100200));
517 		nv_wr32(priv, 0x4069F4, nv_rd32(priv, 0x100204));
518 		nv_wr32(priv, 0x400840, 0);
519 		nv_wr32(priv, 0x400844, 0);
520 		nv_wr32(priv, 0x4008A0, vramsz);
521 		nv_wr32(priv, 0x4008A4, vramsz);
522 		break;
523 	}
524 
525 	return 0;
526 }
527 
528 struct nouveau_oclass
529 nv40_graph_oclass = {
530 	.handle = NV_ENGINE(GR, 0x40),
531 	.ofuncs = &(struct nouveau_ofuncs) {
532 		.ctor = nv40_graph_ctor,
533 		.dtor = _nouveau_graph_dtor,
534 		.init = nv40_graph_init,
535 		.fini = _nouveau_graph_fini,
536 	},
537 };
538