summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/nouveau/nouveau_display.c
blob: 98afc50162e93e01a5683e45b27fd68a13e9ec84 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
/*
 * Copyright (C) 2008 Maarten Maathuis.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */

#include <acpi/video.h>
#include <drm/drmP.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_probe_helper.h>

#include "nouveau_fbcon.h"
#include "nouveau_crtc.h"
#include "nouveau_gem.h"
#include "nouveau_connector.h"
#include "nv50_display.h"

#include <nvif/class.h>
#include <nvif/cl0046.h>
#include <nvif/event.h>

static int
nouveau_display_vblank_handler(struct nvif_notify *notify)
{
	struct nouveau_crtc *nv_crtc =
		container_of(notify, typeof(*nv_crtc), vblank);
	drm_crtc_handle_vblank(&nv_crtc->base);
	return NVIF_NOTIFY_KEEP;
}

int
nouveau_display_vblank_enable(struct drm_device *dev, unsigned int pipe)
{
	struct drm_crtc *crtc;
	struct nouveau_crtc *nv_crtc;

	crtc = drm_crtc_from_index(dev, pipe);
	if (!crtc)
		return -EINVAL;

	nv_crtc = nouveau_crtc(crtc);
	nvif_notify_get(&nv_crtc->vblank);

	return 0;
}

void
nouveau_display_vblank_disable(struct drm_device *dev, unsigned int pipe)
{
	struct drm_crtc *crtc;
	struct nouveau_crtc *nv_crtc;

	crtc = drm_crtc_from_index(dev, pipe);
	if (!crtc)
		return;

	nv_crtc = nouveau_crtc(crtc);
	nvif_notify_put(&nv_crtc->vblank);
}

static inline int
calc(int blanks, int blanke, int total, int line)
{
	if (blanke >= blanks) {
		if (line >= blanks)
			line -= total;
	} else {
		if (line >= blanks)
			line -= total;
		line -= blanke + 1;
	}
	return line;
}

static bool
nouveau_display_scanoutpos_head(struct drm_crtc *crtc, int *vpos, int *hpos,
				ktime_t *stime, ktime_t *etime)
{
	struct {
		struct nv04_disp_mthd_v0 base;
		struct nv04_disp_scanoutpos_v0 scan;
	} args = {
		.base.method = NV04_DISP_SCANOUTPOS,
		.base.head = nouveau_crtc(crtc)->index,
	};
	struct nouveau_display *disp = nouveau_display(crtc->dev);
	struct drm_vblank_crtc *vblank = &crtc->dev->vblank[drm_crtc_index(crtc)];
	int retry = 20;
	bool ret = false;

	do {
		ret = nvif_mthd(&disp->disp.object, 0, &args, sizeof(args));
		if (ret != 0)
			return false;

		if (args.scan.vline) {
			ret = true;
			break;
		}

		if (retry) ndelay(vblank->linedur_ns);
	} while (retry--);

	*hpos = args.scan.hline;
	*vpos = calc(args.scan.vblanks, args.scan.vblanke,
		     args.scan.vtotal, args.scan.vline);
	if (stime) *stime = ns_to_ktime(args.scan.time[0]);
	if (etime) *etime = ns_to_ktime(args.scan.time[1]);

	return ret;
}

bool
nouveau_display_scanoutpos(struct drm_device *dev, unsigned int pipe,
			   bool in_vblank_irq, int *vpos, int *hpos,
			   ktime_t *stime, ktime_t *etime,
			   const struct drm_display_mode *mode)
{
	struct drm_crtc *crtc;

	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
		if (nouveau_crtc(crtc)->index == pipe) {
			return nouveau_display_scanoutpos_head(crtc, vpos, hpos,
							       stime, etime);
		}
	}

	return false;
}

static void
nouveau_display_vblank_fini(struct drm_device *dev)
{
	struct drm_crtc *crtc;

	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
		nvif_notify_fini(&nv_crtc->vblank);
	}
}

static int
nouveau_display_vblank_init(struct drm_device *dev)
{
	struct nouveau_display *disp = nouveau_display(dev);
	struct drm_crtc *crtc;
	int ret;

	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
		ret = nvif_notify_init(&disp->disp.object,
				       nouveau_display_vblank_handler, false,
				       NV04_DISP_NTFY_VBLANK,
				       &(struct nvif_notify_head_req_v0) {
					.head = nv_crtc->index,
				       },
				       sizeof(struct nvif_notify_head_req_v0),
				       sizeof(struct nvif_notify_head_rep_v0),
				       &nv_crtc->vblank);
		if (ret) {
			nouveau_display_vblank_fini(dev);
			return ret;
		}
	}

	ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
	if (ret) {
		nouveau_display_vblank_fini(dev);
		return ret;
	}

	return 0;
}

static void
nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
{
	struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);

	if (fb->nvbo)
		drm_gem_object_put_unlocked(&fb->nvbo->bo.base);

	drm_framebuffer_cleanup(drm_fb);
	kfree(fb);
}

static int
nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb,
				       struct drm_file *file_priv,
				       unsigned int *handle)
{
	struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);

	return drm_gem_handle_create(file_priv, &fb->nvbo->bo.base, handle);
}

static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
	.destroy = nouveau_user_framebuffer_destroy,
	.create_handle = nouveau_user_framebuffer_create_handle,
};

int
nouveau_framebuffer_new(struct drm_device *dev,
			const struct drm_mode_fb_cmd2 *mode_cmd,
			struct nouveau_bo *nvbo,
			struct nouveau_framebuffer **pfb)
{
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nouveau_framebuffer *fb;
	int ret;

        /* YUV overlays have special requirements pre-NV50 */
	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA &&

	    (mode_cmd->pixel_format == DRM_FORMAT_YUYV ||
	     mode_cmd->pixel_format == DRM_FORMAT_UYVY ||
	     mode_cmd->pixel_format == DRM_FORMAT_NV12 ||
	     mode_cmd->pixel_format == DRM_FORMAT_NV21) &&
	    (mode_cmd->pitches[0] & 0x3f || /* align 64 */
	     mode_cmd->pitches[0] >= 0x10000 || /* at most 64k pitch */
	     (mode_cmd->pitches[1] && /* pitches for planes must match */
	      mode_cmd->pitches[0] != mode_cmd->pitches[1]))) {
		struct drm_format_name_buf format_name;
		DRM_DEBUG_KMS("Unsuitable framebuffer: format: %s; pitches: 0x%x\n 0x%x\n",
			      drm_get_format_name(mode_cmd->pixel_format,
						  &format_name),
			      mode_cmd->pitches[0],
			      mode_cmd->pitches[1]);
		return -EINVAL;
	}

	if (!(fb = *pfb = kzalloc(sizeof(*fb), GFP_KERNEL)))
		return -ENOMEM;

	drm_helper_mode_fill_fb_struct(dev, &fb->base, mode_cmd);
	fb->nvbo = nvbo;

	ret = drm_framebuffer_init(dev, &fb->base, &nouveau_framebuffer_funcs);
	if (ret)
		kfree(fb);
	return ret;
}

struct drm_framebuffer *
nouveau_user_framebuffer_create(struct drm_device *dev,
				struct drm_file *file_priv,
				const struct drm_mode_fb_cmd2 *mode_cmd)
{
	struct nouveau_framebuffer *fb;
	struct nouveau_bo *nvbo;
	struct drm_gem_object *gem;
	int ret;

	gem = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
	if (!gem)
		return ERR_PTR(-ENOENT);
	nvbo = nouveau_gem_object(gem);

	ret = nouveau_framebuffer_new(dev, mode_cmd, nvbo, &fb);
	if (ret == 0)
		return &fb->base;

	drm_gem_object_put_unlocked(gem);
	return ERR_PTR(ret);
}

static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
	.fb_create = nouveau_user_framebuffer_create,
	.output_poll_changed = nouveau_fbcon_output_poll_changed,
};


struct nouveau_drm_prop_enum_list {
	u8 gen_mask;
	int type;
	char *name;
};

static struct nouveau_drm_prop_enum_list underscan[] = {
	{ 6, UNDERSCAN_AUTO, "auto" },
	{ 6, UNDERSCAN_OFF, "off" },
	{ 6, UNDERSCAN_ON, "on" },
	{}
};

static struct nouveau_drm_prop_enum_list dither_mode[] = {
	{ 7, DITHERING_MODE_AUTO, "auto" },
	{ 7, DITHERING_MODE_OFF, "off" },
	{ 1, DITHERING_MODE_ON, "on" },
	{ 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
	{ 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
	{ 4, DITHERING_MODE_TEMPORAL, "temporal" },
	{}
};

static struct nouveau_drm_prop_enum_list dither_depth[] = {
	{ 6, DITHERING_DEPTH_AUTO, "auto" },
	{ 6, DITHERING_DEPTH_6BPC, "6 bpc" },
	{ 6, DITHERING_DEPTH_8BPC, "8 bpc" },
	{}
};

#define PROP_ENUM(p,gen,n,list) do {                                           \
	struct nouveau_drm_prop_enum_list *l = (list);                         \
	int c = 0;                                                             \
	while (l->gen_mask) {                                                  \
		if (l->gen_mask & (1 << (gen)))                                \
			c++;                                                   \
		l++;                                                           \
	}                                                                      \
	if (c) {                                                               \
		p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c);        \
		l = (list);                                                    \
		while (p && l->gen_mask) {                                     \
			if (l->gen_mask & (1 << (gen))) {                      \
				drm_property_add_enum(p, l->type, l->name);    \
			}                                                      \
			l++;                                                   \
		}                                                              \
	}                                                                      \
} while(0)

static void
nouveau_display_hpd_work(struct work_struct *work)
{
	struct nouveau_drm *drm = container_of(work, typeof(*drm), hpd_work);

	pm_runtime_get_sync(drm->dev->dev);

	drm_helper_hpd_irq_event(drm->dev);

	pm_runtime_mark_last_busy(drm->dev->dev);
	pm_runtime_put_sync(drm->dev->dev);
}

#ifdef CONFIG_ACPI

static int
nouveau_display_acpi_ntfy(struct notifier_block *nb, unsigned long val,
			  void *data)
{
	struct nouveau_drm *drm = container_of(nb, typeof(*drm), acpi_nb);
	struct acpi_bus_event *info = data;
	int ret;

	if (!strcmp(info->device_class, ACPI_VIDEO_CLASS)) {
		if (info->type == ACPI_VIDEO_NOTIFY_PROBE) {
			ret = pm_runtime_get(drm->dev->dev);
			if (ret == 1 || ret == -EACCES) {
				/* If the GPU is already awake, or in a state
				 * where we can't wake it up, it can handle
				 * it's own hotplug events.
				 */
				pm_runtime_put_autosuspend(drm->dev->dev);
			} else if (ret == 0) {
				/* This may be the only indication we receive
				 * of a connector hotplug on a runtime
				 * suspended GPU, schedule hpd_work to check.
				 */
				NV_DEBUG(drm, "ACPI requested connector reprobe\n");
				schedule_work(&drm->hpd_work);
				pm_runtime_put_noidle(drm->dev->dev);
			} else {
				NV_WARN(drm, "Dropped ACPI reprobe event due to RPM error: %d\n",
					ret);
			}

			/* acpi-video should not generate keypresses for this */
			return NOTIFY_BAD;
		}
	}

	return NOTIFY_DONE;
}
#endif

int
nouveau_display_init(struct drm_device *dev, bool resume, bool runtime)
{
	struct nouveau_display *disp = nouveau_display(dev);
	struct drm_connector *connector;
	struct drm_connector_list_iter conn_iter;
	int ret;

	ret = disp->init(dev, resume, runtime);
	if (ret)
		return ret;

	/* enable connector detection and polling for connectors without HPD
	 * support
	 */
	drm_kms_helper_poll_enable(dev);

	/* enable hotplug interrupts */
	drm_connector_list_iter_begin(dev, &conn_iter);
	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
		struct nouveau_connector *conn = nouveau_connector(connector);
		nvif_notify_get(&conn->hpd);
	}
	drm_connector_list_iter_end(&conn_iter);

	return ret;
}

void
nouveau_display_fini(struct drm_device *dev, bool suspend, bool runtime)
{
	struct nouveau_display *disp = nouveau_display(dev);
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct drm_connector *connector;
	struct drm_connector_list_iter conn_iter;

	if (!suspend) {
		if (drm_drv_uses_atomic_modeset(dev))
			drm_atomic_helper_shutdown(dev);
		else
			drm_helper_force_disable_all(dev);
	}

	/* disable hotplug interrupts */
	drm_connector_list_iter_begin(dev, &conn_iter);
	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
		struct nouveau_connector *conn = nouveau_connector(connector);
		nvif_notify_put(&conn->hpd);
	}
	drm_connector_list_iter_end(&conn_iter);

	if (!runtime)
		cancel_work_sync(&drm->hpd_work);

	drm_kms_helper_poll_disable(dev);
	disp->fini(dev, suspend);
}

static void
nouveau_display_create_properties(struct drm_device *dev)
{
	struct nouveau_display *disp = nouveau_display(dev);
	int gen;

	if (disp->disp.object.oclass < NV50_DISP)
		gen = 0;
	else
	if (disp->disp.object.oclass < GF110_DISP)
		gen = 1;
	else
		gen = 2;

	PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
	PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
	PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);

	disp->underscan_hborder_property =
		drm_property_create_range(dev, 0, "underscan hborder", 0, 128);

	disp->underscan_vborder_property =
		drm_property_create_range(dev, 0, "underscan vborder", 0, 128);

	if (gen < 1)
		return;

	/* -90..+90 */
	disp->vibrant_hue_property =
		drm_property_create_range(dev, 0, "vibrant hue", 0, 180);

	/* -100..+100 */
	disp->color_vibrance_property =
		drm_property_create_range(dev, 0, "color vibrance", 0, 200);
}

int
nouveau_display_create(struct drm_device *dev)
{
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nvkm_device *device = nvxx_device(&drm->client.device);
	struct nouveau_display *disp;
	int ret;

	disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL);
	if (!disp)
		return -ENOMEM;

	drm_mode_config_init(dev);
	drm_mode_create_scaling_mode_property(dev);
	drm_mode_create_dvi_i_properties(dev);

	dev->mode_config.funcs = &nouveau_mode_config_funcs;
	dev->mode_config.fb_base = device->func->resource_addr(device, 1);

	dev->mode_config.min_width = 0;
	dev->mode_config.min_height = 0;
	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_CELSIUS) {
		dev->mode_config.max_width = 2048;
		dev->mode_config.max_height = 2048;
	} else
	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
		dev->mode_config.max_width = 4096;
		dev->mode_config.max_height = 4096;
	} else
	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI) {
		dev->mode_config.max_width = 8192;
		dev->mode_config.max_height = 8192;
	} else {
		dev->mode_config.max_width = 16384;
		dev->mode_config.max_height = 16384;
	}

	dev->mode_config.preferred_depth = 24;
	dev->mode_config.prefer_shadow = 1;

	if (drm->client.device.info.chipset < 0x11)
		dev->mode_config.async_page_flip = false;
	else
		dev->mode_config.async_page_flip = true;

	drm_kms_helper_poll_init(dev);
	drm_kms_helper_poll_disable(dev);

	if (nouveau_modeset != 2 && drm->vbios.dcb.entries) {
		ret = nvif_disp_ctor(&drm->client.device, 0, &disp->disp);
		if (ret == 0) {
			nouveau_display_create_properties(dev);
			if (disp->disp.object.oclass < NV50_DISP)
				ret = nv04_display_create(dev);
			else
				ret = nv50_display_create(dev);
		}
	} else {
		ret = 0;
	}

	if (ret)
		goto disp_create_err;

	drm_mode_config_reset(dev);

	if (dev->mode_config.num_crtc) {
		ret = nouveau_display_vblank_init(dev);
		if (ret)
			goto vblank_err;
	}

	INIT_WORK(&drm->hpd_work, nouveau_display_hpd_work);
#ifdef CONFIG_ACPI
	drm->acpi_nb.notifier_call = nouveau_display_acpi_ntfy;
	register_acpi_notifier(&drm->acpi_nb);
#endif

	return 0;

vblank_err:
	disp->dtor(dev);
disp_create_err:
	drm_kms_helper_poll_fini(dev);
	drm_mode_config_cleanup(dev);
	return ret;
}

void
nouveau_display_destroy(struct drm_device *dev)
{
	struct nouveau_display *disp = nouveau_display(dev);

#ifdef CONFIG_ACPI
	unregister_acpi_notifier(&nouveau_drm(dev)->acpi_nb);
#endif
	nouveau_display_vblank_fini(dev);

	drm_kms_helper_poll_fini(dev);
	drm_mode_config_cleanup(dev);

	if (disp->dtor)
		disp->dtor(dev);

	nvif_disp_dtor(&disp->disp);

	nouveau_drm(dev)->display = NULL;
	kfree(disp);
}

int
nouveau_display_suspend(struct drm_device *dev, bool runtime)
{
	struct nouveau_display *disp = nouveau_display(dev);

	if (drm_drv_uses_atomic_modeset(dev)) {
		if (!runtime) {
			disp->suspend = drm_atomic_helper_suspend(dev);
			if (IS_ERR(disp->suspend)) {
				int ret = PTR_ERR(disp->suspend);
				disp->suspend = NULL;
				return ret;
			}
		}
	}

	nouveau_display_fini(dev, true, runtime);
	return 0;
}

void
nouveau_display_resume(struct drm_device *dev, bool runtime)
{
	struct nouveau_display *disp = nouveau_display(dev);

	nouveau_display_init(dev, true, runtime);

	if (drm_drv_uses_atomic_modeset(dev)) {
		if (disp->suspend) {
			drm_atomic_helper_resume(dev, disp->suspend);
			disp->suspend = NULL;
		}
		return;
	}
}

int
nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
			    struct drm_mode_create_dumb *args)
{
	struct nouveau_cli *cli = nouveau_cli(file_priv);
	struct nouveau_bo *bo;
	uint32_t domain;
	int ret;

	args->pitch = roundup(args->width * (args->bpp / 8), 256);
	args->size = args->pitch * args->height;
	args->size = roundup(args->size, PAGE_SIZE);

	/* Use VRAM if there is any ; otherwise fallback to system memory */
	if (nouveau_drm(dev)->client.device.info.ram_size != 0)
		domain = NOUVEAU_GEM_DOMAIN_VRAM;
	else
		domain = NOUVEAU_GEM_DOMAIN_GART;

	ret = nouveau_gem_new(cli, args->size, 0, domain, 0, 0, &bo);
	if (ret)
		return ret;

	ret = drm_gem_handle_create(file_priv, &bo->bo.base, &args->handle);
	drm_gem_object_put_unlocked(&bo->bo.base);
	return ret;
}

int
nouveau_display_dumb_map_offset(struct drm_file *file_priv,
				struct drm_device *dev,
				uint32_t handle, uint64_t *poffset)
{
	struct drm_gem_object *gem;

	gem = drm_gem_object_lookup(file_priv, handle);
	if (gem) {
		struct nouveau_bo *bo = nouveau_gem_object(gem);
		*poffset = drm_vma_node_offset_addr(&bo->bo.base.vma_node);
		drm_gem_object_put_unlocked(gem);
		return 0;
	}

	return -ENOENT;
}