1 /*
2  * Copyright (C) 2008 Maarten Maathuis.
3  * All Rights Reserved.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining
6  * a copy of this software and associated documentation files (the
7  * "Software"), to deal in the Software without restriction, including
8  * without limitation the rights to use, copy, modify, merge, publish,
9  * distribute, sublicense, and/or sell copies of the Software, and to
10  * permit persons to whom the Software is furnished to do so, subject to
11  * the following conditions:
12  *
13  * The above copyright notice and this permission notice (including the
14  * next paragraph) shall be included in all copies or substantial
15  * portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24  *
25  */
26 
27 #include <drm/drmP.h>
28 #include <drm/drm_crtc_helper.h>
29 #include <drm/ttm/ttm_execbuf_util.h>
30 
31 #include "nouveau_fbcon.h"
32 #include "dispnv04/hw.h"
33 #include "nouveau_crtc.h"
34 #include "nouveau_dma.h"
35 #include "nouveau_gem.h"
36 #include "nouveau_connector.h"
37 #include "nv50_display.h"
38 
39 #include "nouveau_fence.h"
40 
41 #include <subdev/bios/gpio.h>
42 #include <subdev/gpio.h>
43 #include <engine/disp.h>
44 
45 #include <core/class.h>
46 
47 static void
48 nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
49 {
50 	struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
51 
52 	if (fb->nvbo)
53 		drm_gem_object_unreference_unlocked(fb->nvbo->gem);
54 
55 	drm_framebuffer_cleanup(drm_fb);
56 	kfree(fb);
57 }
58 
59 static int
60 nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb,
61 				       struct drm_file *file_priv,
62 				       unsigned int *handle)
63 {
64 	struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
65 
66 	return drm_gem_handle_create(file_priv, fb->nvbo->gem, handle);
67 }
68 
69 static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
70 	.destroy = nouveau_user_framebuffer_destroy,
71 	.create_handle = nouveau_user_framebuffer_create_handle,
72 };
73 
74 int
75 nouveau_framebuffer_init(struct drm_device *dev,
76 			 struct nouveau_framebuffer *nv_fb,
77 			 struct drm_mode_fb_cmd2 *mode_cmd,
78 			 struct nouveau_bo *nvbo)
79 {
80 	struct nouveau_drm *drm = nouveau_drm(dev);
81 	struct drm_framebuffer *fb = &nv_fb->base;
82 	int ret;
83 
84 	drm_helper_mode_fill_fb_struct(fb, mode_cmd);
85 	nv_fb->nvbo = nvbo;
86 
87 	if (nv_device(drm->device)->card_type >= NV_50) {
88 		u32 tile_flags = nouveau_bo_tile_layout(nvbo);
89 		if (tile_flags == 0x7a00 ||
90 		    tile_flags == 0xfe00)
91 			nv_fb->r_dma = NvEvoFB32;
92 		else
93 		if (tile_flags == 0x7000)
94 			nv_fb->r_dma = NvEvoFB16;
95 		else
96 			nv_fb->r_dma = NvEvoVRAM_LP;
97 
98 		switch (fb->depth) {
99 		case  8: nv_fb->r_format = 0x1e00; break;
100 		case 15: nv_fb->r_format = 0xe900; break;
101 		case 16: nv_fb->r_format = 0xe800; break;
102 		case 24:
103 		case 32: nv_fb->r_format = 0xcf00; break;
104 		case 30: nv_fb->r_format = 0xd100; break;
105 		default:
106 			 NV_ERROR(drm, "unknown depth %d\n", fb->depth);
107 			 return -EINVAL;
108 		}
109 
110 		if (nvbo->tile_flags & NOUVEAU_GEM_TILE_NONCONTIG) {
111 			NV_ERROR(drm, "framebuffer requires contiguous bo\n");
112 			return -EINVAL;
113 		}
114 
115 		if (nv_device(drm->device)->chipset == 0x50)
116 			nv_fb->r_format |= (tile_flags << 8);
117 
118 		if (!tile_flags) {
119 			if (nv_device(drm->device)->card_type < NV_D0)
120 				nv_fb->r_pitch = 0x00100000 | fb->pitches[0];
121 			else
122 				nv_fb->r_pitch = 0x01000000 | fb->pitches[0];
123 		} else {
124 			u32 mode = nvbo->tile_mode;
125 			if (nv_device(drm->device)->card_type >= NV_C0)
126 				mode >>= 4;
127 			nv_fb->r_pitch = ((fb->pitches[0] / 4) << 4) | mode;
128 		}
129 	}
130 
131 	ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
132 	if (ret) {
133 		return ret;
134 	}
135 
136 	return 0;
137 }
138 
139 static struct drm_framebuffer *
140 nouveau_user_framebuffer_create(struct drm_device *dev,
141 				struct drm_file *file_priv,
142 				struct drm_mode_fb_cmd2 *mode_cmd)
143 {
144 	struct nouveau_framebuffer *nouveau_fb;
145 	struct drm_gem_object *gem;
146 	int ret = -ENOMEM;
147 
148 	gem = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
149 	if (!gem)
150 		return ERR_PTR(-ENOENT);
151 
152 	nouveau_fb = kzalloc(sizeof(struct nouveau_framebuffer), GFP_KERNEL);
153 	if (!nouveau_fb)
154 		goto err_unref;
155 
156 	ret = nouveau_framebuffer_init(dev, nouveau_fb, mode_cmd, nouveau_gem_object(gem));
157 	if (ret)
158 		goto err;
159 
160 	return &nouveau_fb->base;
161 
162 err:
163 	kfree(nouveau_fb);
164 err_unref:
165 	drm_gem_object_unreference(gem);
166 	return ERR_PTR(ret);
167 }
168 
169 static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
170 	.fb_create = nouveau_user_framebuffer_create,
171 	.output_poll_changed = nouveau_fbcon_output_poll_changed,
172 };
173 
174 
175 struct nouveau_drm_prop_enum_list {
176 	u8 gen_mask;
177 	int type;
178 	char *name;
179 };
180 
181 static struct nouveau_drm_prop_enum_list underscan[] = {
182 	{ 6, UNDERSCAN_AUTO, "auto" },
183 	{ 6, UNDERSCAN_OFF, "off" },
184 	{ 6, UNDERSCAN_ON, "on" },
185 	{}
186 };
187 
188 static struct nouveau_drm_prop_enum_list dither_mode[] = {
189 	{ 7, DITHERING_MODE_AUTO, "auto" },
190 	{ 7, DITHERING_MODE_OFF, "off" },
191 	{ 1, DITHERING_MODE_ON, "on" },
192 	{ 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
193 	{ 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
194 	{ 4, DITHERING_MODE_TEMPORAL, "temporal" },
195 	{}
196 };
197 
198 static struct nouveau_drm_prop_enum_list dither_depth[] = {
199 	{ 6, DITHERING_DEPTH_AUTO, "auto" },
200 	{ 6, DITHERING_DEPTH_6BPC, "6 bpc" },
201 	{ 6, DITHERING_DEPTH_8BPC, "8 bpc" },
202 	{}
203 };
204 
205 #define PROP_ENUM(p,gen,n,list) do {                                           \
206 	struct nouveau_drm_prop_enum_list *l = (list);                         \
207 	int c = 0;                                                             \
208 	while (l->gen_mask) {                                                  \
209 		if (l->gen_mask & (1 << (gen)))                                \
210 			c++;                                                   \
211 		l++;                                                           \
212 	}                                                                      \
213 	if (c) {                                                               \
214 		p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c);        \
215 		l = (list);                                                    \
216 		c = 0;                                                         \
217 		while (p && l->gen_mask) {                                     \
218 			if (l->gen_mask & (1 << (gen))) {                      \
219 				drm_property_add_enum(p, c, l->type, l->name); \
220 				c++;                                           \
221 			}                                                      \
222 			l++;                                                   \
223 		}                                                              \
224 	}                                                                      \
225 } while(0)
226 
227 int
228 nouveau_display_init(struct drm_device *dev)
229 {
230 	struct nouveau_drm *drm = nouveau_drm(dev);
231 	struct nouveau_display *disp = nouveau_display(dev);
232 	struct nouveau_gpio *gpio = nouveau_gpio(drm->device);
233 	struct drm_connector *connector;
234 	int ret;
235 
236 	ret = disp->init(dev);
237 	if (ret)
238 		return ret;
239 
240 	/* enable polling for external displays */
241 	drm_kms_helper_poll_enable(dev);
242 
243 	/* enable hotplug interrupts */
244 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
245 		struct nouveau_connector *conn = nouveau_connector(connector);
246 		if (gpio && conn->hpd.func != DCB_GPIO_UNUSED) {
247 			nouveau_event_get(gpio->events, conn->hpd.line,
248 					 &conn->hpd_func);
249 		}
250 	}
251 
252 	return ret;
253 }
254 
255 void
256 nouveau_display_fini(struct drm_device *dev)
257 {
258 	struct nouveau_drm *drm = nouveau_drm(dev);
259 	struct nouveau_display *disp = nouveau_display(dev);
260 	struct nouveau_gpio *gpio = nouveau_gpio(drm->device);
261 	struct drm_connector *connector;
262 
263 	/* disable hotplug interrupts */
264 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
265 		struct nouveau_connector *conn = nouveau_connector(connector);
266 		if (gpio && conn->hpd.func != DCB_GPIO_UNUSED) {
267 			nouveau_event_put(gpio->events, conn->hpd.line,
268 					 &conn->hpd_func);
269 		}
270 	}
271 
272 	drm_kms_helper_poll_disable(dev);
273 	disp->fini(dev);
274 }
275 
276 int
277 nouveau_display_create(struct drm_device *dev)
278 {
279 	struct nouveau_drm *drm = nouveau_drm(dev);
280 	struct nouveau_display *disp;
281 	int ret, gen;
282 
283 	disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL);
284 	if (!disp)
285 		return -ENOMEM;
286 
287 	drm_mode_config_init(dev);
288 	drm_mode_create_scaling_mode_property(dev);
289 	drm_mode_create_dvi_i_properties(dev);
290 
291 	if (nv_device(drm->device)->card_type < NV_50)
292 		gen = 0;
293 	else
294 	if (nv_device(drm->device)->card_type < NV_D0)
295 		gen = 1;
296 	else
297 		gen = 2;
298 
299 	PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
300 	PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
301 	PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
302 
303 	disp->underscan_hborder_property =
304 		drm_property_create_range(dev, 0, "underscan hborder", 0, 128);
305 
306 	disp->underscan_vborder_property =
307 		drm_property_create_range(dev, 0, "underscan vborder", 0, 128);
308 
309 	if (gen >= 1) {
310 		/* -90..+90 */
311 		disp->vibrant_hue_property =
312 			drm_property_create_range(dev, 0, "vibrant hue", 0, 180);
313 
314 		/* -100..+100 */
315 		disp->color_vibrance_property =
316 			drm_property_create_range(dev, 0, "color vibrance", 0, 200);
317 	}
318 
319 	dev->mode_config.funcs = &nouveau_mode_config_funcs;
320 	dev->mode_config.fb_base = pci_resource_start(dev->pdev, 1);
321 
322 	dev->mode_config.min_width = 0;
323 	dev->mode_config.min_height = 0;
324 	if (nv_device(drm->device)->card_type < NV_10) {
325 		dev->mode_config.max_width = 2048;
326 		dev->mode_config.max_height = 2048;
327 	} else
328 	if (nv_device(drm->device)->card_type < NV_50) {
329 		dev->mode_config.max_width = 4096;
330 		dev->mode_config.max_height = 4096;
331 	} else {
332 		dev->mode_config.max_width = 8192;
333 		dev->mode_config.max_height = 8192;
334 	}
335 
336 	dev->mode_config.preferred_depth = 24;
337 	dev->mode_config.prefer_shadow = 1;
338 
339 	drm_kms_helper_poll_init(dev);
340 	drm_kms_helper_poll_disable(dev);
341 
342 	if (drm->vbios.dcb.entries) {
343 		if (nv_device(drm->device)->card_type < NV_50)
344 			ret = nv04_display_create(dev);
345 		else
346 			ret = nv50_display_create(dev);
347 	} else {
348 		ret = 0;
349 	}
350 
351 	if (ret)
352 		goto disp_create_err;
353 
354 	if (dev->mode_config.num_crtc) {
355 		ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
356 		if (ret)
357 			goto vblank_err;
358 	}
359 
360 	nouveau_backlight_init(dev);
361 	return 0;
362 
363 vblank_err:
364 	disp->dtor(dev);
365 disp_create_err:
366 	drm_kms_helper_poll_fini(dev);
367 	drm_mode_config_cleanup(dev);
368 	return ret;
369 }
370 
371 void
372 nouveau_display_destroy(struct drm_device *dev)
373 {
374 	struct nouveau_display *disp = nouveau_display(dev);
375 
376 	nouveau_backlight_exit(dev);
377 	drm_vblank_cleanup(dev);
378 
379 	drm_kms_helper_poll_fini(dev);
380 	drm_mode_config_cleanup(dev);
381 
382 	if (disp->dtor)
383 		disp->dtor(dev);
384 
385 	nouveau_drm(dev)->display = NULL;
386 	kfree(disp);
387 }
388 
389 int
390 nouveau_display_suspend(struct drm_device *dev)
391 {
392 	struct nouveau_drm *drm = nouveau_drm(dev);
393 	struct drm_crtc *crtc;
394 
395 	nouveau_display_fini(dev);
396 
397 	NV_SUSPEND(drm, "unpinning framebuffer(s)...\n");
398 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
399 		struct nouveau_framebuffer *nouveau_fb;
400 
401 		nouveau_fb = nouveau_framebuffer(crtc->fb);
402 		if (!nouveau_fb || !nouveau_fb->nvbo)
403 			continue;
404 
405 		nouveau_bo_unpin(nouveau_fb->nvbo);
406 	}
407 
408 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
409 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
410 
411 		nouveau_bo_unmap(nv_crtc->cursor.nvbo);
412 		nouveau_bo_unpin(nv_crtc->cursor.nvbo);
413 	}
414 
415 	return 0;
416 }
417 
418 void
419 nouveau_display_repin(struct drm_device *dev)
420 {
421 	struct nouveau_drm *drm = nouveau_drm(dev);
422 	struct drm_crtc *crtc;
423 	int ret;
424 
425 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
426 		struct nouveau_framebuffer *nouveau_fb;
427 
428 		nouveau_fb = nouveau_framebuffer(crtc->fb);
429 		if (!nouveau_fb || !nouveau_fb->nvbo)
430 			continue;
431 
432 		nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM);
433 	}
434 
435 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
436 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
437 
438 		ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM);
439 		if (!ret)
440 			ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
441 		if (ret)
442 			NV_ERROR(drm, "Could not pin/map cursor.\n");
443 	}
444 }
445 
446 void
447 nouveau_display_resume(struct drm_device *dev)
448 {
449 	struct drm_crtc *crtc;
450 	nouveau_display_init(dev);
451 
452 	/* Force CLUT to get re-loaded during modeset */
453 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
454 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
455 
456 		nv_crtc->lut.depth = 0;
457 	}
458 
459 	drm_helper_resume_force_mode(dev);
460 
461 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
462 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
463 		u32 offset = nv_crtc->cursor.nvbo->bo.offset;
464 
465 		nv_crtc->cursor.set_offset(nv_crtc, offset);
466 		nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
467 						 nv_crtc->cursor_saved_y);
468 	}
469 }
470 
471 static int
472 nouveau_page_flip_emit(struct nouveau_channel *chan,
473 		       struct nouveau_bo *old_bo,
474 		       struct nouveau_bo *new_bo,
475 		       struct nouveau_page_flip_state *s,
476 		       struct nouveau_fence **pfence)
477 {
478 	struct nouveau_fence_chan *fctx = chan->fence;
479 	struct nouveau_drm *drm = chan->drm;
480 	struct drm_device *dev = drm->dev;
481 	unsigned long flags;
482 	int ret;
483 
484 	/* Queue it to the pending list */
485 	spin_lock_irqsave(&dev->event_lock, flags);
486 	list_add_tail(&s->head, &fctx->flip);
487 	spin_unlock_irqrestore(&dev->event_lock, flags);
488 
489 	/* Synchronize with the old framebuffer */
490 	ret = nouveau_fence_sync(old_bo->bo.sync_obj, chan);
491 	if (ret)
492 		goto fail;
493 
494 	/* Emit the pageflip */
495 	ret = RING_SPACE(chan, 3);
496 	if (ret)
497 		goto fail;
498 
499 	if (nv_device(drm->device)->card_type < NV_C0) {
500 		BEGIN_NV04(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
501 		OUT_RING  (chan, 0x00000000);
502 		OUT_RING  (chan, 0x00000000);
503 	} else {
504 		BEGIN_NVC0(chan, 0, NV10_SUBCHAN_REF_CNT, 1);
505 		OUT_RING  (chan, 0);
506 		BEGIN_IMC0(chan, 0, NVSW_SUBCHAN_PAGE_FLIP, 0x0000);
507 	}
508 	FIRE_RING (chan);
509 
510 	ret = nouveau_fence_new(chan, false, pfence);
511 	if (ret)
512 		goto fail;
513 
514 	return 0;
515 fail:
516 	spin_lock_irqsave(&dev->event_lock, flags);
517 	list_del(&s->head);
518 	spin_unlock_irqrestore(&dev->event_lock, flags);
519 	return ret;
520 }
521 
522 int
523 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
524 		       struct drm_pending_vblank_event *event,
525 		       uint32_t page_flip_flags)
526 {
527 	struct drm_device *dev = crtc->dev;
528 	struct nouveau_drm *drm = nouveau_drm(dev);
529 	struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->fb)->nvbo;
530 	struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
531 	struct nouveau_page_flip_state *s;
532 	struct nouveau_channel *chan = NULL;
533 	struct nouveau_fence *fence;
534 	struct ttm_validate_buffer resv[2] = {
535 		{ .bo = &old_bo->bo },
536 		{ .bo = &new_bo->bo },
537 	};
538 	struct ww_acquire_ctx ticket;
539 	LIST_HEAD(res);
540 	int ret;
541 
542 	if (!drm->channel)
543 		return -ENODEV;
544 
545 	s = kzalloc(sizeof(*s), GFP_KERNEL);
546 	if (!s)
547 		return -ENOMEM;
548 
549 	/* Choose the channel the flip will be handled in */
550 	spin_lock(&old_bo->bo.bdev->fence_lock);
551 	fence = new_bo->bo.sync_obj;
552 	if (fence)
553 		chan = fence->channel;
554 	if (!chan)
555 		chan = drm->channel;
556 	spin_unlock(&old_bo->bo.bdev->fence_lock);
557 
558 	if (new_bo != old_bo) {
559 		ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM);
560 		if (ret)
561 			goto fail_free;
562 
563 		list_add(&resv[1].head, &res);
564 	}
565 	list_add(&resv[0].head, &res);
566 
567 	mutex_lock(&chan->cli->mutex);
568 	ret = ttm_eu_reserve_buffers(&ticket, &res);
569 	if (ret)
570 		goto fail_unpin;
571 
572 	/* Initialize a page flip struct */
573 	*s = (struct nouveau_page_flip_state)
574 		{ { }, event, nouveau_crtc(crtc)->index,
575 		  fb->bits_per_pixel, fb->pitches[0], crtc->x, crtc->y,
576 		  new_bo->bo.offset };
577 
578 	/* Emit a page flip */
579 	if (nv_device(drm->device)->card_type >= NV_50) {
580 		ret = nv50_display_flip_next(crtc, fb, chan, 0);
581 		if (ret)
582 			goto fail_unreserve;
583 	} else {
584 		struct nv04_display *dispnv04 = nv04_display(dev);
585 		nouveau_bo_ref(new_bo, &dispnv04->image[nouveau_crtc(crtc)->index]);
586 	}
587 
588 	ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
589 	mutex_unlock(&chan->cli->mutex);
590 	if (ret)
591 		goto fail_unreserve;
592 
593 	/* Update the crtc struct and cleanup */
594 	crtc->fb = fb;
595 
596 	ttm_eu_fence_buffer_objects(&ticket, &res, fence);
597 	if (old_bo != new_bo)
598 		nouveau_bo_unpin(old_bo);
599 	nouveau_fence_unref(&fence);
600 	return 0;
601 
602 fail_unreserve:
603 	ttm_eu_backoff_reservation(&ticket, &res);
604 fail_unpin:
605 	mutex_unlock(&chan->cli->mutex);
606 	if (old_bo != new_bo)
607 		nouveau_bo_unpin(new_bo);
608 fail_free:
609 	kfree(s);
610 	return ret;
611 }
612 
613 int
614 nouveau_finish_page_flip(struct nouveau_channel *chan,
615 			 struct nouveau_page_flip_state *ps)
616 {
617 	struct nouveau_fence_chan *fctx = chan->fence;
618 	struct nouveau_drm *drm = chan->drm;
619 	struct drm_device *dev = drm->dev;
620 	struct nouveau_page_flip_state *s;
621 	unsigned long flags;
622 
623 	spin_lock_irqsave(&dev->event_lock, flags);
624 
625 	if (list_empty(&fctx->flip)) {
626 		NV_ERROR(drm, "unexpected pageflip\n");
627 		spin_unlock_irqrestore(&dev->event_lock, flags);
628 		return -EINVAL;
629 	}
630 
631 	s = list_first_entry(&fctx->flip, struct nouveau_page_flip_state, head);
632 	if (s->event)
633 		drm_send_vblank_event(dev, -1, s->event);
634 
635 	list_del(&s->head);
636 	if (ps)
637 		*ps = *s;
638 	kfree(s);
639 
640 	spin_unlock_irqrestore(&dev->event_lock, flags);
641 	return 0;
642 }
643 
644 int
645 nouveau_flip_complete(void *data)
646 {
647 	struct nouveau_channel *chan = data;
648 	struct nouveau_drm *drm = chan->drm;
649 	struct nouveau_page_flip_state state;
650 
651 	if (!nouveau_finish_page_flip(chan, &state)) {
652 		if (nv_device(drm->device)->card_type < NV_50) {
653 			nv_set_crtc_base(drm->dev, state.crtc, state.offset +
654 					 state.y * state.pitch +
655 					 state.x * state.bpp / 8);
656 		}
657 	}
658 
659 	return 0;
660 }
661 
662 int
663 nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
664 			    struct drm_mode_create_dumb *args)
665 {
666 	struct nouveau_bo *bo;
667 	int ret;
668 
669 	args->pitch = roundup(args->width * (args->bpp / 8), 256);
670 	args->size = args->pitch * args->height;
671 	args->size = roundup(args->size, PAGE_SIZE);
672 
673 	ret = nouveau_gem_new(dev, args->size, 0, NOUVEAU_GEM_DOMAIN_VRAM, 0, 0, &bo);
674 	if (ret)
675 		return ret;
676 
677 	ret = drm_gem_handle_create(file_priv, bo->gem, &args->handle);
678 	drm_gem_object_unreference_unlocked(bo->gem);
679 	return ret;
680 }
681 
682 int
683 nouveau_display_dumb_map_offset(struct drm_file *file_priv,
684 				struct drm_device *dev,
685 				uint32_t handle, uint64_t *poffset)
686 {
687 	struct drm_gem_object *gem;
688 
689 	gem = drm_gem_object_lookup(dev, file_priv, handle);
690 	if (gem) {
691 		struct nouveau_bo *bo = gem->driver_private;
692 		*poffset = drm_vma_node_offset_addr(&bo->bo.vma_node);
693 		drm_gem_object_unreference_unlocked(gem);
694 		return 0;
695 	}
696 
697 	return -ENOENT;
698 }
699