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 <acpi/video.h>
28 
29 #include <drm/drm_atomic.h>
30 #include <drm/drm_atomic_helper.h>
31 #include <drm/drm_crtc_helper.h>
32 #include <drm/drm_fb_helper.h>
33 #include <drm/drm_fourcc.h>
34 #include <drm/drm_gem_framebuffer_helper.h>
35 #include <drm/drm_probe_helper.h>
36 #include <drm/drm_vblank.h>
37 
38 #include "nouveau_fbcon.h"
39 #include "nouveau_crtc.h"
40 #include "nouveau_gem.h"
41 #include "nouveau_connector.h"
42 #include "nv50_display.h"
43 
44 #include <nvif/class.h>
45 #include <nvif/cl0046.h>
46 #include <nvif/event.h>
47 #include <dispnv50/crc.h>
48 
49 int
50 nouveau_display_vblank_enable(struct drm_crtc *crtc)
51 {
52 	struct nouveau_crtc *nv_crtc;
53 
54 	nv_crtc = nouveau_crtc(crtc);
55 	nvif_notify_get(&nv_crtc->vblank);
56 
57 	return 0;
58 }
59 
60 void
61 nouveau_display_vblank_disable(struct drm_crtc *crtc)
62 {
63 	struct nouveau_crtc *nv_crtc;
64 
65 	nv_crtc = nouveau_crtc(crtc);
66 	nvif_notify_put(&nv_crtc->vblank);
67 }
68 
69 static inline int
70 calc(int blanks, int blanke, int total, int line)
71 {
72 	if (blanke >= blanks) {
73 		if (line >= blanks)
74 			line -= total;
75 	} else {
76 		if (line >= blanks)
77 			line -= total;
78 		line -= blanke + 1;
79 	}
80 	return line;
81 }
82 
83 static bool
84 nouveau_display_scanoutpos_head(struct drm_crtc *crtc, int *vpos, int *hpos,
85 				ktime_t *stime, ktime_t *etime)
86 {
87 	struct {
88 		struct nv04_disp_mthd_v0 base;
89 		struct nv04_disp_scanoutpos_v0 scan;
90 	} args = {
91 		.base.method = NV04_DISP_SCANOUTPOS,
92 		.base.head = nouveau_crtc(crtc)->index,
93 	};
94 	struct nouveau_display *disp = nouveau_display(crtc->dev);
95 	struct drm_vblank_crtc *vblank = &crtc->dev->vblank[drm_crtc_index(crtc)];
96 	int retry = 20;
97 	bool ret = false;
98 
99 	do {
100 		ret = nvif_mthd(&disp->disp.object, 0, &args, sizeof(args));
101 		if (ret != 0)
102 			return false;
103 
104 		if (args.scan.vline) {
105 			ret = true;
106 			break;
107 		}
108 
109 		if (retry) ndelay(vblank->linedur_ns);
110 	} while (retry--);
111 
112 	*hpos = args.scan.hline;
113 	*vpos = calc(args.scan.vblanks, args.scan.vblanke,
114 		     args.scan.vtotal, args.scan.vline);
115 	if (stime) *stime = ns_to_ktime(args.scan.time[0]);
116 	if (etime) *etime = ns_to_ktime(args.scan.time[1]);
117 
118 	return ret;
119 }
120 
121 bool
122 nouveau_display_scanoutpos(struct drm_crtc *crtc,
123 			   bool in_vblank_irq, int *vpos, int *hpos,
124 			   ktime_t *stime, ktime_t *etime,
125 			   const struct drm_display_mode *mode)
126 {
127 	return nouveau_display_scanoutpos_head(crtc, vpos, hpos,
128 					       stime, etime);
129 }
130 
131 static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
132 	.destroy = drm_gem_fb_destroy,
133 	.create_handle = drm_gem_fb_create_handle,
134 };
135 
136 static void
137 nouveau_decode_mod(struct nouveau_drm *drm,
138 		   uint64_t modifier,
139 		   uint32_t *tile_mode,
140 		   uint8_t *kind)
141 {
142 	struct nouveau_display *disp = nouveau_display(drm->dev);
143 	BUG_ON(!tile_mode || !kind);
144 
145 	if (modifier == DRM_FORMAT_MOD_LINEAR) {
146 		/* tile_mode will not be used in this case */
147 		*tile_mode = 0;
148 		*kind = 0;
149 	} else {
150 		/*
151 		 * Extract the block height and kind from the corresponding
152 		 * modifier fields.  See drm_fourcc.h for details.
153 		 */
154 
155 		if ((modifier & (0xffull << 12)) == 0ull) {
156 			/* Legacy modifier.  Translate to this dev's 'kind.' */
157 			modifier |= disp->format_modifiers[0] & (0xffull << 12);
158 		}
159 
160 		*tile_mode = (uint32_t)(modifier & 0xF);
161 		*kind = (uint8_t)((modifier >> 12) & 0xFF);
162 
163 		if (drm->client.device.info.chipset >= 0xc0)
164 			*tile_mode <<= 4;
165 	}
166 }
167 
168 void
169 nouveau_framebuffer_get_layout(struct drm_framebuffer *fb,
170 			       uint32_t *tile_mode,
171 			       uint8_t *kind)
172 {
173 	if (fb->flags & DRM_MODE_FB_MODIFIERS) {
174 		struct nouveau_drm *drm = nouveau_drm(fb->dev);
175 
176 		nouveau_decode_mod(drm, fb->modifier, tile_mode, kind);
177 	} else {
178 		const struct nouveau_bo *nvbo = nouveau_gem_object(fb->obj[0]);
179 
180 		*tile_mode = nvbo->mode;
181 		*kind = nvbo->kind;
182 	}
183 }
184 
185 static const u64 legacy_modifiers[] = {
186 	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(0),
187 	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(1),
188 	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(2),
189 	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(3),
190 	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(4),
191 	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(5),
192 	DRM_FORMAT_MOD_INVALID
193 };
194 
195 static int
196 nouveau_validate_decode_mod(struct nouveau_drm *drm,
197 			    uint64_t modifier,
198 			    uint32_t *tile_mode,
199 			    uint8_t *kind)
200 {
201 	struct nouveau_display *disp = nouveau_display(drm->dev);
202 	int mod;
203 
204 	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
205 		return -EINVAL;
206 	}
207 
208 	BUG_ON(!disp->format_modifiers);
209 
210 	for (mod = 0;
211 	     (disp->format_modifiers[mod] != DRM_FORMAT_MOD_INVALID) &&
212 	     (disp->format_modifiers[mod] != modifier);
213 	     mod++);
214 
215 	if (disp->format_modifiers[mod] == DRM_FORMAT_MOD_INVALID) {
216 		for (mod = 0;
217 		     (legacy_modifiers[mod] != DRM_FORMAT_MOD_INVALID) &&
218 		     (legacy_modifiers[mod] != modifier);
219 		     mod++);
220 		if (legacy_modifiers[mod] == DRM_FORMAT_MOD_INVALID)
221 			return -EINVAL;
222 	}
223 
224 	nouveau_decode_mod(drm, modifier, tile_mode, kind);
225 
226 	return 0;
227 }
228 
229 static inline uint32_t
230 nouveau_get_width_in_blocks(uint32_t stride)
231 {
232 	/* GOBs per block in the x direction is always one, and GOBs are
233 	 * 64 bytes wide
234 	 */
235 	static const uint32_t log_block_width = 6;
236 
237 	return (stride + (1 << log_block_width) - 1) >> log_block_width;
238 }
239 
240 static inline uint32_t
241 nouveau_get_height_in_blocks(struct nouveau_drm *drm,
242 			     uint32_t height,
243 			     uint32_t log_block_height_in_gobs)
244 {
245 	uint32_t log_gob_height;
246 	uint32_t log_block_height;
247 
248 	BUG_ON(drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA);
249 
250 	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI)
251 		log_gob_height = 2;
252 	else
253 		log_gob_height = 3;
254 
255 	log_block_height = log_block_height_in_gobs + log_gob_height;
256 
257 	return (height + (1 << log_block_height) - 1) >> log_block_height;
258 }
259 
260 static int
261 nouveau_check_bl_size(struct nouveau_drm *drm, struct nouveau_bo *nvbo,
262 		      uint32_t offset, uint32_t stride, uint32_t h,
263 		      uint32_t tile_mode)
264 {
265 	uint32_t gob_size, bw, bh;
266 	uint64_t bl_size;
267 
268 	BUG_ON(drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA);
269 
270 	if (drm->client.device.info.chipset >= 0xc0) {
271 		if (tile_mode & 0xF)
272 			return -EINVAL;
273 		tile_mode >>= 4;
274 	}
275 
276 	if (tile_mode & 0xFFFFFFF0)
277 		return -EINVAL;
278 
279 	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI)
280 		gob_size = 256;
281 	else
282 		gob_size = 512;
283 
284 	bw = nouveau_get_width_in_blocks(stride);
285 	bh = nouveau_get_height_in_blocks(drm, h, tile_mode);
286 
287 	bl_size = bw * bh * (1 << tile_mode) * gob_size;
288 
289 	DRM_DEBUG_KMS("offset=%u stride=%u h=%u tile_mode=0x%02x bw=%u bh=%u gob_size=%u bl_size=%llu size=%zu\n",
290 		      offset, stride, h, tile_mode, bw, bh, gob_size, bl_size,
291 		      nvbo->bo.base.size);
292 
293 	if (bl_size + offset > nvbo->bo.base.size)
294 		return -ERANGE;
295 
296 	return 0;
297 }
298 
299 int
300 nouveau_framebuffer_new(struct drm_device *dev,
301 			const struct drm_mode_fb_cmd2 *mode_cmd,
302 			struct drm_gem_object *gem,
303 			struct drm_framebuffer **pfb)
304 {
305 	struct nouveau_drm *drm = nouveau_drm(dev);
306 	struct nouveau_bo *nvbo = nouveau_gem_object(gem);
307 	struct drm_framebuffer *fb;
308 	const struct drm_format_info *info;
309 	unsigned int height, i;
310 	uint32_t tile_mode;
311 	uint8_t kind;
312 	int ret;
313 
314         /* YUV overlays have special requirements pre-NV50 */
315 	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA &&
316 
317 	    (mode_cmd->pixel_format == DRM_FORMAT_YUYV ||
318 	     mode_cmd->pixel_format == DRM_FORMAT_UYVY ||
319 	     mode_cmd->pixel_format == DRM_FORMAT_NV12 ||
320 	     mode_cmd->pixel_format == DRM_FORMAT_NV21) &&
321 	    (mode_cmd->pitches[0] & 0x3f || /* align 64 */
322 	     mode_cmd->pitches[0] >= 0x10000 || /* at most 64k pitch */
323 	     (mode_cmd->pitches[1] && /* pitches for planes must match */
324 	      mode_cmd->pitches[0] != mode_cmd->pitches[1]))) {
325 		DRM_DEBUG_KMS("Unsuitable framebuffer: format: %p4cc; pitches: 0x%x\n 0x%x\n",
326 			      &mode_cmd->pixel_format,
327 			      mode_cmd->pitches[0], mode_cmd->pitches[1]);
328 		return -EINVAL;
329 	}
330 
331 	if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) {
332 		if (nouveau_validate_decode_mod(drm, mode_cmd->modifier[0],
333 						&tile_mode, &kind)) {
334 			DRM_DEBUG_KMS("Unsupported modifier: 0x%llx\n",
335 				      mode_cmd->modifier[0]);
336 			return -EINVAL;
337 		}
338 	} else {
339 		tile_mode = nvbo->mode;
340 		kind = nvbo->kind;
341 	}
342 
343 	info = drm_get_format_info(dev, mode_cmd);
344 
345 	for (i = 0; i < info->num_planes; i++) {
346 		height = drm_format_info_plane_height(info,
347 						      mode_cmd->height,
348 						      i);
349 
350 		if (kind) {
351 			ret = nouveau_check_bl_size(drm, nvbo,
352 						    mode_cmd->offsets[i],
353 						    mode_cmd->pitches[i],
354 						    height, tile_mode);
355 			if (ret)
356 				return ret;
357 		} else {
358 			uint32_t size = mode_cmd->pitches[i] * height;
359 
360 			if (size + mode_cmd->offsets[i] > nvbo->bo.base.size)
361 				return -ERANGE;
362 		}
363 	}
364 
365 	if (!(fb = *pfb = kzalloc(sizeof(*fb), GFP_KERNEL)))
366 		return -ENOMEM;
367 
368 	drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
369 	fb->obj[0] = gem;
370 
371 	ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
372 	if (ret)
373 		kfree(fb);
374 	return ret;
375 }
376 
377 struct drm_framebuffer *
378 nouveau_user_framebuffer_create(struct drm_device *dev,
379 				struct drm_file *file_priv,
380 				const struct drm_mode_fb_cmd2 *mode_cmd)
381 {
382 	struct drm_framebuffer *fb;
383 	struct drm_gem_object *gem;
384 	int ret;
385 
386 	gem = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
387 	if (!gem)
388 		return ERR_PTR(-ENOENT);
389 
390 	ret = nouveau_framebuffer_new(dev, mode_cmd, gem, &fb);
391 	if (ret == 0)
392 		return fb;
393 
394 	drm_gem_object_put(gem);
395 	return ERR_PTR(ret);
396 }
397 
398 static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
399 	.fb_create = nouveau_user_framebuffer_create,
400 	.output_poll_changed = nouveau_fbcon_output_poll_changed,
401 };
402 
403 
404 struct nouveau_drm_prop_enum_list {
405 	u8 gen_mask;
406 	int type;
407 	char *name;
408 };
409 
410 static struct nouveau_drm_prop_enum_list underscan[] = {
411 	{ 6, UNDERSCAN_AUTO, "auto" },
412 	{ 6, UNDERSCAN_OFF, "off" },
413 	{ 6, UNDERSCAN_ON, "on" },
414 	{}
415 };
416 
417 static struct nouveau_drm_prop_enum_list dither_mode[] = {
418 	{ 7, DITHERING_MODE_AUTO, "auto" },
419 	{ 7, DITHERING_MODE_OFF, "off" },
420 	{ 1, DITHERING_MODE_ON, "on" },
421 	{ 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
422 	{ 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
423 	{ 4, DITHERING_MODE_TEMPORAL, "temporal" },
424 	{}
425 };
426 
427 static struct nouveau_drm_prop_enum_list dither_depth[] = {
428 	{ 6, DITHERING_DEPTH_AUTO, "auto" },
429 	{ 6, DITHERING_DEPTH_6BPC, "6 bpc" },
430 	{ 6, DITHERING_DEPTH_8BPC, "8 bpc" },
431 	{}
432 };
433 
434 #define PROP_ENUM(p,gen,n,list) do {                                           \
435 	struct nouveau_drm_prop_enum_list *l = (list);                         \
436 	int c = 0;                                                             \
437 	while (l->gen_mask) {                                                  \
438 		if (l->gen_mask & (1 << (gen)))                                \
439 			c++;                                                   \
440 		l++;                                                           \
441 	}                                                                      \
442 	if (c) {                                                               \
443 		p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c);        \
444 		l = (list);                                                    \
445 		while (p && l->gen_mask) {                                     \
446 			if (l->gen_mask & (1 << (gen))) {                      \
447 				drm_property_add_enum(p, l->type, l->name);    \
448 			}                                                      \
449 			l++;                                                   \
450 		}                                                              \
451 	}                                                                      \
452 } while(0)
453 
454 void
455 nouveau_display_hpd_resume(struct drm_device *dev)
456 {
457 	struct nouveau_drm *drm = nouveau_drm(dev);
458 
459 	mutex_lock(&drm->hpd_lock);
460 	drm->hpd_pending = ~0;
461 	mutex_unlock(&drm->hpd_lock);
462 
463 	schedule_work(&drm->hpd_work);
464 }
465 
466 static void
467 nouveau_display_hpd_work(struct work_struct *work)
468 {
469 	struct nouveau_drm *drm = container_of(work, typeof(*drm), hpd_work);
470 	struct drm_device *dev = drm->dev;
471 	struct drm_connector *connector;
472 	struct drm_connector_list_iter conn_iter;
473 	u32 pending;
474 	bool changed = false;
475 
476 	pm_runtime_get_sync(dev->dev);
477 
478 	mutex_lock(&drm->hpd_lock);
479 	pending = drm->hpd_pending;
480 	drm->hpd_pending = 0;
481 	mutex_unlock(&drm->hpd_lock);
482 
483 	/* Nothing to do, exit early without updating the last busy counter */
484 	if (!pending)
485 		goto noop;
486 
487 	mutex_lock(&dev->mode_config.mutex);
488 	drm_connector_list_iter_begin(dev, &conn_iter);
489 
490 	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
491 		enum drm_connector_status old_status = connector->status;
492 		u64 old_epoch_counter = connector->epoch_counter;
493 
494 		if (!(pending & drm_connector_mask(connector)))
495 			continue;
496 
497 		connector->status = drm_helper_probe_detect(connector, NULL,
498 							    false);
499 		if (old_epoch_counter == connector->epoch_counter)
500 			continue;
501 
502 		changed = true;
503 		drm_dbg_kms(dev, "[CONNECTOR:%d:%s] status updated from %s to %s (epoch counter %llu->%llu)\n",
504 			    connector->base.id, connector->name,
505 			    drm_get_connector_status_name(old_status),
506 			    drm_get_connector_status_name(connector->status),
507 			    old_epoch_counter, connector->epoch_counter);
508 	}
509 
510 	drm_connector_list_iter_end(&conn_iter);
511 	mutex_unlock(&dev->mode_config.mutex);
512 
513 	if (changed)
514 		drm_kms_helper_hotplug_event(dev);
515 
516 	pm_runtime_mark_last_busy(drm->dev->dev);
517 noop:
518 	pm_runtime_put_autosuspend(dev->dev);
519 }
520 
521 #ifdef CONFIG_ACPI
522 
523 static int
524 nouveau_display_acpi_ntfy(struct notifier_block *nb, unsigned long val,
525 			  void *data)
526 {
527 	struct nouveau_drm *drm = container_of(nb, typeof(*drm), acpi_nb);
528 	struct acpi_bus_event *info = data;
529 	int ret;
530 
531 	if (!strcmp(info->device_class, ACPI_VIDEO_CLASS)) {
532 		if (info->type == ACPI_VIDEO_NOTIFY_PROBE) {
533 			ret = pm_runtime_get(drm->dev->dev);
534 			if (ret == 1 || ret == -EACCES) {
535 				/* If the GPU is already awake, or in a state
536 				 * where we can't wake it up, it can handle
537 				 * it's own hotplug events.
538 				 */
539 				pm_runtime_put_autosuspend(drm->dev->dev);
540 			} else if (ret == 0 || ret == -EINPROGRESS) {
541 				/* We've started resuming the GPU already, so
542 				 * it will handle scheduling a full reprobe
543 				 * itself
544 				 */
545 				NV_DEBUG(drm, "ACPI requested connector reprobe\n");
546 				pm_runtime_put_noidle(drm->dev->dev);
547 			} else {
548 				NV_WARN(drm, "Dropped ACPI reprobe event due to RPM error: %d\n",
549 					ret);
550 			}
551 
552 			/* acpi-video should not generate keypresses for this */
553 			return NOTIFY_BAD;
554 		}
555 	}
556 
557 	return NOTIFY_DONE;
558 }
559 #endif
560 
561 int
562 nouveau_display_init(struct drm_device *dev, bool resume, bool runtime)
563 {
564 	struct nouveau_display *disp = nouveau_display(dev);
565 	struct drm_connector *connector;
566 	struct drm_connector_list_iter conn_iter;
567 	int ret;
568 
569 	/*
570 	 * Enable hotplug interrupts (done as early as possible, since we need
571 	 * them for MST)
572 	 */
573 	drm_connector_list_iter_begin(dev, &conn_iter);
574 	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
575 		struct nouveau_connector *conn = nouveau_connector(connector);
576 		nvif_notify_get(&conn->hpd);
577 	}
578 	drm_connector_list_iter_end(&conn_iter);
579 
580 	ret = disp->init(dev, resume, runtime);
581 	if (ret)
582 		return ret;
583 
584 	/* enable connector detection and polling for connectors without HPD
585 	 * support
586 	 */
587 	drm_kms_helper_poll_enable(dev);
588 
589 	return ret;
590 }
591 
592 void
593 nouveau_display_fini(struct drm_device *dev, bool suspend, bool runtime)
594 {
595 	struct nouveau_display *disp = nouveau_display(dev);
596 	struct nouveau_drm *drm = nouveau_drm(dev);
597 	struct drm_connector *connector;
598 	struct drm_connector_list_iter conn_iter;
599 
600 	if (!suspend) {
601 		if (drm_drv_uses_atomic_modeset(dev))
602 			drm_atomic_helper_shutdown(dev);
603 		else
604 			drm_helper_force_disable_all(dev);
605 	}
606 
607 	/* disable hotplug interrupts */
608 	drm_connector_list_iter_begin(dev, &conn_iter);
609 	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
610 		struct nouveau_connector *conn = nouveau_connector(connector);
611 		nvif_notify_put(&conn->hpd);
612 	}
613 	drm_connector_list_iter_end(&conn_iter);
614 
615 	if (!runtime)
616 		cancel_work_sync(&drm->hpd_work);
617 
618 	drm_kms_helper_poll_disable(dev);
619 	disp->fini(dev, runtime, suspend);
620 }
621 
622 static void
623 nouveau_display_create_properties(struct drm_device *dev)
624 {
625 	struct nouveau_display *disp = nouveau_display(dev);
626 	int gen;
627 
628 	if (disp->disp.object.oclass < NV50_DISP)
629 		gen = 0;
630 	else
631 	if (disp->disp.object.oclass < GF110_DISP)
632 		gen = 1;
633 	else
634 		gen = 2;
635 
636 	PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
637 	PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
638 	PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
639 
640 	disp->underscan_hborder_property =
641 		drm_property_create_range(dev, 0, "underscan hborder", 0, 128);
642 
643 	disp->underscan_vborder_property =
644 		drm_property_create_range(dev, 0, "underscan vborder", 0, 128);
645 
646 	if (gen < 1)
647 		return;
648 
649 	/* -90..+90 */
650 	disp->vibrant_hue_property =
651 		drm_property_create_range(dev, 0, "vibrant hue", 0, 180);
652 
653 	/* -100..+100 */
654 	disp->color_vibrance_property =
655 		drm_property_create_range(dev, 0, "color vibrance", 0, 200);
656 }
657 
658 int
659 nouveau_display_create(struct drm_device *dev)
660 {
661 	struct nouveau_drm *drm = nouveau_drm(dev);
662 	struct nvkm_device *device = nvxx_device(&drm->client.device);
663 	struct nouveau_display *disp;
664 	int ret;
665 
666 	disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL);
667 	if (!disp)
668 		return -ENOMEM;
669 
670 	drm_mode_config_init(dev);
671 	drm_mode_create_scaling_mode_property(dev);
672 	drm_mode_create_dvi_i_properties(dev);
673 
674 	dev->mode_config.funcs = &nouveau_mode_config_funcs;
675 	dev->mode_config.fb_base = device->func->resource_addr(device, 1);
676 
677 	dev->mode_config.min_width = 0;
678 	dev->mode_config.min_height = 0;
679 	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_CELSIUS) {
680 		dev->mode_config.max_width = 2048;
681 		dev->mode_config.max_height = 2048;
682 	} else
683 	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
684 		dev->mode_config.max_width = 4096;
685 		dev->mode_config.max_height = 4096;
686 	} else
687 	if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI) {
688 		dev->mode_config.max_width = 8192;
689 		dev->mode_config.max_height = 8192;
690 	} else {
691 		dev->mode_config.max_width = 16384;
692 		dev->mode_config.max_height = 16384;
693 	}
694 
695 	dev->mode_config.preferred_depth = 24;
696 	dev->mode_config.prefer_shadow = 1;
697 
698 	if (drm->client.device.info.chipset < 0x11)
699 		dev->mode_config.async_page_flip = false;
700 	else
701 		dev->mode_config.async_page_flip = true;
702 
703 	drm_kms_helper_poll_init(dev);
704 	drm_kms_helper_poll_disable(dev);
705 
706 	if (nouveau_modeset != 2 && drm->vbios.dcb.entries) {
707 		ret = nvif_disp_ctor(&drm->client.device, "kmsDisp", 0,
708 				     &disp->disp);
709 		if (ret == 0) {
710 			nouveau_display_create_properties(dev);
711 			if (disp->disp.object.oclass < NV50_DISP) {
712 				dev->mode_config.fb_modifiers_not_supported = true;
713 				ret = nv04_display_create(dev);
714 			} else {
715 				ret = nv50_display_create(dev);
716 			}
717 		}
718 	} else {
719 		ret = 0;
720 	}
721 
722 	if (ret)
723 		goto disp_create_err;
724 
725 	drm_mode_config_reset(dev);
726 
727 	if (dev->mode_config.num_crtc) {
728 		ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
729 		if (ret)
730 			goto vblank_err;
731 
732 		if (disp->disp.object.oclass >= NV50_DISP)
733 			nv50_crc_init(dev);
734 	}
735 
736 	INIT_WORK(&drm->hpd_work, nouveau_display_hpd_work);
737 	mutex_init(&drm->hpd_lock);
738 #ifdef CONFIG_ACPI
739 	drm->acpi_nb.notifier_call = nouveau_display_acpi_ntfy;
740 	register_acpi_notifier(&drm->acpi_nb);
741 #endif
742 
743 	return 0;
744 
745 vblank_err:
746 	disp->dtor(dev);
747 disp_create_err:
748 	drm_kms_helper_poll_fini(dev);
749 	drm_mode_config_cleanup(dev);
750 	return ret;
751 }
752 
753 void
754 nouveau_display_destroy(struct drm_device *dev)
755 {
756 	struct nouveau_display *disp = nouveau_display(dev);
757 	struct nouveau_drm *drm = nouveau_drm(dev);
758 
759 #ifdef CONFIG_ACPI
760 	unregister_acpi_notifier(&drm->acpi_nb);
761 #endif
762 
763 	drm_kms_helper_poll_fini(dev);
764 	drm_mode_config_cleanup(dev);
765 
766 	if (disp->dtor)
767 		disp->dtor(dev);
768 
769 	nvif_disp_dtor(&disp->disp);
770 
771 	nouveau_drm(dev)->display = NULL;
772 	mutex_destroy(&drm->hpd_lock);
773 	kfree(disp);
774 }
775 
776 int
777 nouveau_display_suspend(struct drm_device *dev, bool runtime)
778 {
779 	struct nouveau_display *disp = nouveau_display(dev);
780 
781 	if (drm_drv_uses_atomic_modeset(dev)) {
782 		if (!runtime) {
783 			disp->suspend = drm_atomic_helper_suspend(dev);
784 			if (IS_ERR(disp->suspend)) {
785 				int ret = PTR_ERR(disp->suspend);
786 				disp->suspend = NULL;
787 				return ret;
788 			}
789 		}
790 	}
791 
792 	nouveau_display_fini(dev, true, runtime);
793 	return 0;
794 }
795 
796 void
797 nouveau_display_resume(struct drm_device *dev, bool runtime)
798 {
799 	struct nouveau_display *disp = nouveau_display(dev);
800 
801 	nouveau_display_init(dev, true, runtime);
802 
803 	if (drm_drv_uses_atomic_modeset(dev)) {
804 		if (disp->suspend) {
805 			drm_atomic_helper_resume(dev, disp->suspend);
806 			disp->suspend = NULL;
807 		}
808 		return;
809 	}
810 }
811 
812 int
813 nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
814 			    struct drm_mode_create_dumb *args)
815 {
816 	struct nouveau_cli *cli = nouveau_cli(file_priv);
817 	struct nouveau_bo *bo;
818 	uint32_t domain;
819 	int ret;
820 
821 	args->pitch = roundup(args->width * (args->bpp / 8), 256);
822 	args->size = args->pitch * args->height;
823 	args->size = roundup(args->size, PAGE_SIZE);
824 
825 	/* Use VRAM if there is any ; otherwise fallback to system memory */
826 	if (nouveau_drm(dev)->client.device.info.ram_size != 0)
827 		domain = NOUVEAU_GEM_DOMAIN_VRAM;
828 	else
829 		domain = NOUVEAU_GEM_DOMAIN_GART;
830 
831 	ret = nouveau_gem_new(cli, args->size, 0, domain, 0, 0, &bo);
832 	if (ret)
833 		return ret;
834 
835 	ret = drm_gem_handle_create(file_priv, &bo->bo.base, &args->handle);
836 	drm_gem_object_put(&bo->bo.base);
837 	return ret;
838 }
839