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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 
30 #include <nvif/class.h>
31 
32 #include "nouveau_fbcon.h"
33 #include "dispnv04/hw.h"
34 #include "nouveau_crtc.h"
35 #include "nouveau_dma.h"
36 #include "nouveau_gem.h"
37 #include "nouveau_connector.h"
38 #include "nv50_display.h"
39 
40 #include "nouveau_fence.h"
41 
42 #include <nvif/event.h>
43 
44 static int
nouveau_display_vblank_handler(struct nvif_notify * notify)45 nouveau_display_vblank_handler(struct nvif_notify *notify)
46 {
47 	struct nouveau_crtc *nv_crtc =
48 		container_of(notify, typeof(*nv_crtc), vblank);
49 	drm_handle_vblank(nv_crtc->base.dev, nv_crtc->index);
50 	return NVIF_NOTIFY_KEEP;
51 }
52 
53 int
nouveau_display_vblank_enable(struct drm_device * dev,int head)54 nouveau_display_vblank_enable(struct drm_device *dev, int head)
55 {
56 	struct drm_crtc *crtc;
57 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
58 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
59 		if (nv_crtc->index == head) {
60 			nvif_notify_get(&nv_crtc->vblank);
61 			return 0;
62 		}
63 	}
64 	return -EINVAL;
65 }
66 
67 void
nouveau_display_vblank_disable(struct drm_device * dev,int head)68 nouveau_display_vblank_disable(struct drm_device *dev, int head)
69 {
70 	struct drm_crtc *crtc;
71 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
72 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
73 		if (nv_crtc->index == head) {
74 			nvif_notify_put(&nv_crtc->vblank);
75 			return;
76 		}
77 	}
78 }
79 
80 static inline int
calc(int blanks,int blanke,int total,int line)81 calc(int blanks, int blanke, int total, int line)
82 {
83 	if (blanke >= blanks) {
84 		if (line >= blanks)
85 			line -= total;
86 	} else {
87 		if (line >= blanks)
88 			line -= total;
89 		line -= blanke + 1;
90 	}
91 	return line;
92 }
93 
94 int
nouveau_display_scanoutpos_head(struct drm_crtc * crtc,int * vpos,int * hpos,ktime_t * stime,ktime_t * etime)95 nouveau_display_scanoutpos_head(struct drm_crtc *crtc, int *vpos, int *hpos,
96 				ktime_t *stime, ktime_t *etime)
97 {
98 	struct {
99 		struct nv04_disp_mthd_v0 base;
100 		struct nv04_disp_scanoutpos_v0 scan;
101 	} args = {
102 		.base.method = NV04_DISP_SCANOUTPOS,
103 		.base.head = nouveau_crtc(crtc)->index,
104 	};
105 	struct nouveau_display *disp = nouveau_display(crtc->dev);
106 	int ret, retry = 1;
107 
108 	do {
109 		ret = nvif_mthd(&disp->disp, 0, &args, sizeof(args));
110 		if (ret != 0)
111 			return 0;
112 
113 		if (args.scan.vline) {
114 			ret |= DRM_SCANOUTPOS_ACCURATE;
115 			ret |= DRM_SCANOUTPOS_VALID;
116 			break;
117 		}
118 
119 		if (retry) ndelay(crtc->linedur_ns);
120 	} while (retry--);
121 
122 	*hpos = args.scan.hline;
123 	*vpos = calc(args.scan.vblanks, args.scan.vblanke,
124 		     args.scan.vtotal, args.scan.vline);
125 	if (stime) *stime = ns_to_ktime(args.scan.time[0]);
126 	if (etime) *etime = ns_to_ktime(args.scan.time[1]);
127 
128 	if (*vpos < 0)
129 		ret |= DRM_SCANOUTPOS_IN_VBLANK;
130 	return ret;
131 }
132 
133 int
nouveau_display_scanoutpos(struct drm_device * dev,int head,unsigned int flags,int * vpos,int * hpos,ktime_t * stime,ktime_t * etime)134 nouveau_display_scanoutpos(struct drm_device *dev, int head, unsigned int flags,
135 			   int *vpos, int *hpos, ktime_t *stime, ktime_t *etime)
136 {
137 	struct drm_crtc *crtc;
138 
139 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
140 		if (nouveau_crtc(crtc)->index == head) {
141 			return nouveau_display_scanoutpos_head(crtc, vpos, hpos,
142 							       stime, etime);
143 		}
144 	}
145 
146 	return 0;
147 }
148 
149 int
nouveau_display_vblstamp(struct drm_device * dev,int head,int * max_error,struct timeval * time,unsigned flags)150 nouveau_display_vblstamp(struct drm_device *dev, int head, int *max_error,
151 			 struct timeval *time, unsigned flags)
152 {
153 	struct drm_crtc *crtc;
154 
155 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
156 		if (nouveau_crtc(crtc)->index == head) {
157 			return drm_calc_vbltimestamp_from_scanoutpos(dev,
158 					head, max_error, time, flags, crtc,
159 					&crtc->hwmode);
160 		}
161 	}
162 
163 	return -EINVAL;
164 }
165 
166 static void
nouveau_display_vblank_fini(struct drm_device * dev)167 nouveau_display_vblank_fini(struct drm_device *dev)
168 {
169 	struct drm_crtc *crtc;
170 
171 	drm_vblank_cleanup(dev);
172 
173 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
174 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
175 		nvif_notify_fini(&nv_crtc->vblank);
176 	}
177 }
178 
179 static int
nouveau_display_vblank_init(struct drm_device * dev)180 nouveau_display_vblank_init(struct drm_device *dev)
181 {
182 	struct nouveau_display *disp = nouveau_display(dev);
183 	struct drm_crtc *crtc;
184 	int ret;
185 
186 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
187 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
188 		ret = nvif_notify_init(&disp->disp, NULL,
189 				       nouveau_display_vblank_handler, false,
190 				       NV04_DISP_NTFY_VBLANK,
191 				       &(struct nvif_notify_head_req_v0) {
192 					.head = nv_crtc->index,
193 				       },
194 				       sizeof(struct nvif_notify_head_req_v0),
195 				       sizeof(struct nvif_notify_head_rep_v0),
196 				       &nv_crtc->vblank);
197 		if (ret) {
198 			nouveau_display_vblank_fini(dev);
199 			return ret;
200 		}
201 	}
202 
203 	ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
204 	if (ret) {
205 		nouveau_display_vblank_fini(dev);
206 		return ret;
207 	}
208 
209 	return 0;
210 }
211 
212 static void
nouveau_user_framebuffer_destroy(struct drm_framebuffer * drm_fb)213 nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
214 {
215 	struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
216 	struct nouveau_display *disp = nouveau_display(drm_fb->dev);
217 
218 	if (disp->fb_dtor)
219 		disp->fb_dtor(drm_fb);
220 
221 	if (fb->nvbo)
222 		drm_gem_object_unreference_unlocked(&fb->nvbo->gem);
223 
224 	drm_framebuffer_cleanup(drm_fb);
225 	kfree(fb);
226 }
227 
228 static int
nouveau_user_framebuffer_create_handle(struct drm_framebuffer * drm_fb,struct drm_file * file_priv,unsigned int * handle)229 nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb,
230 				       struct drm_file *file_priv,
231 				       unsigned int *handle)
232 {
233 	struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
234 
235 	return drm_gem_handle_create(file_priv, &fb->nvbo->gem, handle);
236 }
237 
238 static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
239 	.destroy = nouveau_user_framebuffer_destroy,
240 	.create_handle = nouveau_user_framebuffer_create_handle,
241 };
242 
243 int
nouveau_framebuffer_init(struct drm_device * dev,struct nouveau_framebuffer * nv_fb,struct drm_mode_fb_cmd2 * mode_cmd,struct nouveau_bo * nvbo)244 nouveau_framebuffer_init(struct drm_device *dev,
245 			 struct nouveau_framebuffer *nv_fb,
246 			 struct drm_mode_fb_cmd2 *mode_cmd,
247 			 struct nouveau_bo *nvbo)
248 {
249 	struct nouveau_display *disp = nouveau_display(dev);
250 	struct drm_framebuffer *fb = &nv_fb->base;
251 	int ret;
252 
253 	drm_helper_mode_fill_fb_struct(fb, mode_cmd);
254 	nv_fb->nvbo = nvbo;
255 
256 	ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
257 	if (ret)
258 		return ret;
259 
260 	if (disp->fb_ctor) {
261 		ret = disp->fb_ctor(fb);
262 		if (ret)
263 			disp->fb_dtor(fb);
264 	}
265 
266 	return ret;
267 }
268 
269 static struct drm_framebuffer *
nouveau_user_framebuffer_create(struct drm_device * dev,struct drm_file * file_priv,struct drm_mode_fb_cmd2 * mode_cmd)270 nouveau_user_framebuffer_create(struct drm_device *dev,
271 				struct drm_file *file_priv,
272 				struct drm_mode_fb_cmd2 *mode_cmd)
273 {
274 	struct nouveau_framebuffer *nouveau_fb;
275 	struct drm_gem_object *gem;
276 	int ret = -ENOMEM;
277 
278 	gem = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
279 	if (!gem)
280 		return ERR_PTR(-ENOENT);
281 
282 	nouveau_fb = kzalloc(sizeof(struct nouveau_framebuffer), GFP_KERNEL);
283 	if (!nouveau_fb)
284 		goto err_unref;
285 
286 	ret = nouveau_framebuffer_init(dev, nouveau_fb, mode_cmd, nouveau_gem_object(gem));
287 	if (ret)
288 		goto err;
289 
290 	return &nouveau_fb->base;
291 
292 err:
293 	kfree(nouveau_fb);
294 err_unref:
295 	drm_gem_object_unreference(gem);
296 	return ERR_PTR(ret);
297 }
298 
299 static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
300 	.fb_create = nouveau_user_framebuffer_create,
301 	.output_poll_changed = nouveau_fbcon_output_poll_changed,
302 };
303 
304 
305 struct nouveau_drm_prop_enum_list {
306 	u8 gen_mask;
307 	int type;
308 	char *name;
309 };
310 
311 static struct nouveau_drm_prop_enum_list underscan[] = {
312 	{ 6, UNDERSCAN_AUTO, "auto" },
313 	{ 6, UNDERSCAN_OFF, "off" },
314 	{ 6, UNDERSCAN_ON, "on" },
315 	{}
316 };
317 
318 static struct nouveau_drm_prop_enum_list dither_mode[] = {
319 	{ 7, DITHERING_MODE_AUTO, "auto" },
320 	{ 7, DITHERING_MODE_OFF, "off" },
321 	{ 1, DITHERING_MODE_ON, "on" },
322 	{ 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
323 	{ 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
324 	{ 4, DITHERING_MODE_TEMPORAL, "temporal" },
325 	{}
326 };
327 
328 static struct nouveau_drm_prop_enum_list dither_depth[] = {
329 	{ 6, DITHERING_DEPTH_AUTO, "auto" },
330 	{ 6, DITHERING_DEPTH_6BPC, "6 bpc" },
331 	{ 6, DITHERING_DEPTH_8BPC, "8 bpc" },
332 	{}
333 };
334 
335 #define PROP_ENUM(p,gen,n,list) do {                                           \
336 	struct nouveau_drm_prop_enum_list *l = (list);                         \
337 	int c = 0;                                                             \
338 	while (l->gen_mask) {                                                  \
339 		if (l->gen_mask & (1 << (gen)))                                \
340 			c++;                                                   \
341 		l++;                                                           \
342 	}                                                                      \
343 	if (c) {                                                               \
344 		p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c);        \
345 		l = (list);                                                    \
346 		c = 0;                                                         \
347 		while (p && l->gen_mask) {                                     \
348 			if (l->gen_mask & (1 << (gen))) {                      \
349 				drm_property_add_enum(p, c, l->type, l->name); \
350 				c++;                                           \
351 			}                                                      \
352 			l++;                                                   \
353 		}                                                              \
354 	}                                                                      \
355 } while(0)
356 
357 int
nouveau_display_init(struct drm_device * dev)358 nouveau_display_init(struct drm_device *dev)
359 {
360 	struct nouveau_display *disp = nouveau_display(dev);
361 	struct drm_connector *connector;
362 	int ret;
363 
364 	ret = disp->init(dev);
365 	if (ret)
366 		return ret;
367 
368 	/* enable polling for external displays */
369 	drm_kms_helper_poll_enable(dev);
370 
371 	/* enable hotplug interrupts */
372 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
373 		struct nouveau_connector *conn = nouveau_connector(connector);
374 		nvif_notify_get(&conn->hpd);
375 	}
376 
377 	return ret;
378 }
379 
380 void
nouveau_display_fini(struct drm_device * dev)381 nouveau_display_fini(struct drm_device *dev)
382 {
383 	struct nouveau_display *disp = nouveau_display(dev);
384 	struct drm_connector *connector;
385 	int head;
386 
387 	/* Make sure that drm and hw vblank irqs get properly disabled. */
388 	for (head = 0; head < dev->mode_config.num_crtc; head++)
389 		drm_vblank_off(dev, head);
390 
391 	/* disable hotplug interrupts */
392 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
393 		struct nouveau_connector *conn = nouveau_connector(connector);
394 		nvif_notify_put(&conn->hpd);
395 	}
396 
397 	drm_kms_helper_poll_disable(dev);
398 	disp->fini(dev);
399 }
400 
401 static void
nouveau_display_create_properties(struct drm_device * dev)402 nouveau_display_create_properties(struct drm_device *dev)
403 {
404 	struct nouveau_display *disp = nouveau_display(dev);
405 	int gen;
406 
407 	if (disp->disp.oclass < NV50_DISP)
408 		gen = 0;
409 	else
410 	if (disp->disp.oclass < GF110_DISP)
411 		gen = 1;
412 	else
413 		gen = 2;
414 
415 	PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
416 	PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
417 	PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
418 
419 	disp->underscan_hborder_property =
420 		drm_property_create_range(dev, 0, "underscan hborder", 0, 128);
421 
422 	disp->underscan_vborder_property =
423 		drm_property_create_range(dev, 0, "underscan vborder", 0, 128);
424 
425 	if (gen < 1)
426 		return;
427 
428 	/* -90..+90 */
429 	disp->vibrant_hue_property =
430 		drm_property_create_range(dev, 0, "vibrant hue", 0, 180);
431 
432 	/* -100..+100 */
433 	disp->color_vibrance_property =
434 		drm_property_create_range(dev, 0, "color vibrance", 0, 200);
435 }
436 
437 int
nouveau_display_create(struct drm_device * dev)438 nouveau_display_create(struct drm_device *dev)
439 {
440 	struct nouveau_drm *drm = nouveau_drm(dev);
441 	struct nouveau_display *disp;
442 	int ret;
443 
444 	disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL);
445 	if (!disp)
446 		return -ENOMEM;
447 
448 	drm_mode_config_init(dev);
449 	drm_mode_create_scaling_mode_property(dev);
450 	drm_mode_create_dvi_i_properties(dev);
451 
452 	dev->mode_config.funcs = &nouveau_mode_config_funcs;
453 	dev->mode_config.fb_base = nv_device_resource_start(nvkm_device(&drm->device), 1);
454 
455 	dev->mode_config.min_width = 0;
456 	dev->mode_config.min_height = 0;
457 	if (drm->device.info.family < NV_DEVICE_INFO_V0_CELSIUS) {
458 		dev->mode_config.max_width = 2048;
459 		dev->mode_config.max_height = 2048;
460 	} else
461 	if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA) {
462 		dev->mode_config.max_width = 4096;
463 		dev->mode_config.max_height = 4096;
464 	} else {
465 		dev->mode_config.max_width = 8192;
466 		dev->mode_config.max_height = 8192;
467 	}
468 
469 	dev->mode_config.preferred_depth = 24;
470 	dev->mode_config.prefer_shadow = 1;
471 
472 	if (drm->device.info.chipset < 0x11)
473 		dev->mode_config.async_page_flip = false;
474 	else
475 		dev->mode_config.async_page_flip = true;
476 
477 	drm_kms_helper_poll_init(dev);
478 	drm_kms_helper_poll_disable(dev);
479 
480 	if (nouveau_modeset != 2 && drm->vbios.dcb.entries) {
481 		static const u16 oclass[] = {
482 			GM107_DISP,
483 			GK110_DISP,
484 			GK104_DISP,
485 			GF110_DISP,
486 			GT214_DISP,
487 			GT206_DISP,
488 			GT200_DISP,
489 			G82_DISP,
490 			NV50_DISP,
491 			NV04_DISP,
492 		};
493 		int i;
494 
495 		for (i = 0, ret = -ENODEV; ret && i < ARRAY_SIZE(oclass); i++) {
496 			ret = nvif_object_init(nvif_object(&drm->device), NULL,
497 					       NVDRM_DISPLAY, oclass[i],
498 					       NULL, 0, &disp->disp);
499 		}
500 
501 		if (ret == 0) {
502 			nouveau_display_create_properties(dev);
503 			if (disp->disp.oclass < NV50_DISP)
504 				ret = nv04_display_create(dev);
505 			else
506 				ret = nv50_display_create(dev);
507 		}
508 	} else {
509 		ret = 0;
510 	}
511 
512 	if (ret)
513 		goto disp_create_err;
514 
515 	if (dev->mode_config.num_crtc) {
516 		ret = nouveau_display_vblank_init(dev);
517 		if (ret)
518 			goto vblank_err;
519 	}
520 
521 	nouveau_backlight_init(dev);
522 	return 0;
523 
524 vblank_err:
525 	disp->dtor(dev);
526 disp_create_err:
527 	drm_kms_helper_poll_fini(dev);
528 	drm_mode_config_cleanup(dev);
529 	return ret;
530 }
531 
532 void
nouveau_display_destroy(struct drm_device * dev)533 nouveau_display_destroy(struct drm_device *dev)
534 {
535 	struct nouveau_display *disp = nouveau_display(dev);
536 
537 	nouveau_backlight_exit(dev);
538 	nouveau_display_vblank_fini(dev);
539 
540 	drm_kms_helper_poll_fini(dev);
541 	drm_mode_config_cleanup(dev);
542 
543 	if (disp->dtor)
544 		disp->dtor(dev);
545 
546 	nvif_object_fini(&disp->disp);
547 
548 	nouveau_drm(dev)->display = NULL;
549 	kfree(disp);
550 }
551 
552 int
nouveau_display_suspend(struct drm_device * dev,bool runtime)553 nouveau_display_suspend(struct drm_device *dev, bool runtime)
554 {
555 	struct drm_crtc *crtc;
556 
557 	nouveau_display_fini(dev);
558 
559 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
560 		struct nouveau_framebuffer *nouveau_fb;
561 
562 		nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
563 		if (!nouveau_fb || !nouveau_fb->nvbo)
564 			continue;
565 
566 		nouveau_bo_unpin(nouveau_fb->nvbo);
567 	}
568 
569 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
570 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
571 
572 		nouveau_bo_unmap(nv_crtc->cursor.nvbo);
573 		nouveau_bo_unpin(nv_crtc->cursor.nvbo);
574 	}
575 
576 	return 0;
577 }
578 
579 void
nouveau_display_resume(struct drm_device * dev,bool runtime)580 nouveau_display_resume(struct drm_device *dev, bool runtime)
581 {
582 	struct nouveau_drm *drm = nouveau_drm(dev);
583 	struct drm_crtc *crtc;
584 	int ret, head;
585 
586 	/* re-pin fb/cursors */
587 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
588 		struct nouveau_framebuffer *nouveau_fb;
589 
590 		nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
591 		if (!nouveau_fb || !nouveau_fb->nvbo)
592 			continue;
593 
594 		ret = nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM);
595 		if (ret)
596 			NV_ERROR(drm, "Could not pin framebuffer\n");
597 	}
598 
599 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
600 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
601 
602 		ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM);
603 		if (!ret)
604 			ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
605 		if (ret)
606 			NV_ERROR(drm, "Could not pin/map cursor.\n");
607 	}
608 
609 	nouveau_display_init(dev);
610 
611 	/* Force CLUT to get re-loaded during modeset */
612 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
613 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
614 
615 		nv_crtc->lut.depth = 0;
616 	}
617 
618 	/* Make sure that drm and hw vblank irqs get resumed if needed. */
619 	for (head = 0; head < dev->mode_config.num_crtc; head++)
620 		drm_vblank_on(dev, head);
621 
622 	/* This should ensure we don't hit a locking problem when someone
623 	 * wakes us up via a connector.  We should never go into suspend
624 	 * while the display is on anyways.
625 	 */
626 	if (runtime)
627 		return;
628 
629 	drm_helper_resume_force_mode(dev);
630 
631 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
632 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
633 		u32 offset = nv_crtc->cursor.nvbo->bo.offset;
634 
635 		nv_crtc->cursor.set_offset(nv_crtc, offset);
636 		nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
637 						 nv_crtc->cursor_saved_y);
638 	}
639 }
640 
641 static int
nouveau_page_flip_emit(struct nouveau_channel * chan,struct nouveau_bo * old_bo,struct nouveau_bo * new_bo,struct nouveau_page_flip_state * s,struct nouveau_fence ** pfence)642 nouveau_page_flip_emit(struct nouveau_channel *chan,
643 		       struct nouveau_bo *old_bo,
644 		       struct nouveau_bo *new_bo,
645 		       struct nouveau_page_flip_state *s,
646 		       struct nouveau_fence **pfence)
647 {
648 	struct nouveau_fence_chan *fctx = chan->fence;
649 	struct nouveau_drm *drm = chan->drm;
650 	struct drm_device *dev = drm->dev;
651 	unsigned long flags;
652 	int ret;
653 
654 	/* Queue it to the pending list */
655 	spin_lock_irqsave(&dev->event_lock, flags);
656 	list_add_tail(&s->head, &fctx->flip);
657 	spin_unlock_irqrestore(&dev->event_lock, flags);
658 
659 	/* Synchronize with the old framebuffer */
660 	ret = nouveau_fence_sync(old_bo, chan, false, false);
661 	if (ret)
662 		goto fail;
663 
664 	/* Emit the pageflip */
665 	ret = RING_SPACE(chan, 2);
666 	if (ret)
667 		goto fail;
668 
669 	if (drm->device.info.family < NV_DEVICE_INFO_V0_FERMI)
670 		BEGIN_NV04(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
671 	else
672 		BEGIN_NVC0(chan, FermiSw, NV_SW_PAGE_FLIP, 1);
673 	OUT_RING  (chan, 0x00000000);
674 	FIRE_RING (chan);
675 
676 	ret = nouveau_fence_new(chan, false, pfence);
677 	if (ret)
678 		goto fail;
679 
680 	return 0;
681 fail:
682 	spin_lock_irqsave(&dev->event_lock, flags);
683 	list_del(&s->head);
684 	spin_unlock_irqrestore(&dev->event_lock, flags);
685 	return ret;
686 }
687 
688 int
nouveau_crtc_page_flip(struct drm_crtc * crtc,struct drm_framebuffer * fb,struct drm_pending_vblank_event * event,u32 flags)689 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
690 		       struct drm_pending_vblank_event *event, u32 flags)
691 {
692 	const int swap_interval = (flags & DRM_MODE_PAGE_FLIP_ASYNC) ? 0 : 1;
693 	struct drm_device *dev = crtc->dev;
694 	struct nouveau_drm *drm = nouveau_drm(dev);
695 	struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->primary->fb)->nvbo;
696 	struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
697 	struct nouveau_page_flip_state *s;
698 	struct nouveau_channel *chan;
699 	struct nouveau_cli *cli;
700 	struct nouveau_fence *fence;
701 	int ret;
702 
703 	chan = drm->channel;
704 	if (!chan)
705 		return -ENODEV;
706 	cli = (void *)nvif_client(&chan->device->base);
707 
708 	s = kzalloc(sizeof(*s), GFP_KERNEL);
709 	if (!s)
710 		return -ENOMEM;
711 
712 	if (new_bo != old_bo) {
713 		ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM);
714 		if (ret)
715 			goto fail_free;
716 	}
717 
718 	mutex_lock(&cli->mutex);
719 	ret = ttm_bo_reserve(&new_bo->bo, true, false, false, NULL);
720 	if (ret)
721 		goto fail_unpin;
722 
723 	/* synchronise rendering channel with the kernel's channel */
724 	ret = nouveau_fence_sync(new_bo, chan, false, true);
725 	if (ret) {
726 		ttm_bo_unreserve(&new_bo->bo);
727 		goto fail_unpin;
728 	}
729 
730 	if (new_bo != old_bo) {
731 		ttm_bo_unreserve(&new_bo->bo);
732 
733 		ret = ttm_bo_reserve(&old_bo->bo, true, false, false, NULL);
734 		if (ret)
735 			goto fail_unpin;
736 	}
737 
738 	/* Initialize a page flip struct */
739 	*s = (struct nouveau_page_flip_state)
740 		{ { }, event, nouveau_crtc(crtc)->index,
741 		  fb->bits_per_pixel, fb->pitches[0], crtc->x, crtc->y,
742 		  new_bo->bo.offset };
743 
744 	/* Keep vblanks on during flip, for the target crtc of this flip */
745 	drm_vblank_get(dev, nouveau_crtc(crtc)->index);
746 
747 	/* Emit a page flip */
748 	if (drm->device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
749 		ret = nv50_display_flip_next(crtc, fb, chan, swap_interval);
750 		if (ret)
751 			goto fail_unreserve;
752 	} else {
753 		struct nv04_display *dispnv04 = nv04_display(dev);
754 		int head = nouveau_crtc(crtc)->index;
755 
756 		if (swap_interval) {
757 			ret = RING_SPACE(chan, 8);
758 			if (ret)
759 				goto fail_unreserve;
760 
761 			BEGIN_NV04(chan, NvSubImageBlit, 0x012c, 1);
762 			OUT_RING  (chan, 0);
763 			BEGIN_NV04(chan, NvSubImageBlit, 0x0134, 1);
764 			OUT_RING  (chan, head);
765 			BEGIN_NV04(chan, NvSubImageBlit, 0x0100, 1);
766 			OUT_RING  (chan, 0);
767 			BEGIN_NV04(chan, NvSubImageBlit, 0x0130, 1);
768 			OUT_RING  (chan, 0);
769 		}
770 
771 		nouveau_bo_ref(new_bo, &dispnv04->image[head]);
772 	}
773 
774 	ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
775 	if (ret)
776 		goto fail_unreserve;
777 	mutex_unlock(&cli->mutex);
778 
779 	/* Update the crtc struct and cleanup */
780 	crtc->primary->fb = fb;
781 
782 	nouveau_bo_fence(old_bo, fence, false);
783 	ttm_bo_unreserve(&old_bo->bo);
784 	if (old_bo != new_bo)
785 		nouveau_bo_unpin(old_bo);
786 	nouveau_fence_unref(&fence);
787 	return 0;
788 
789 fail_unreserve:
790 	drm_vblank_put(dev, nouveau_crtc(crtc)->index);
791 	ttm_bo_unreserve(&old_bo->bo);
792 fail_unpin:
793 	mutex_unlock(&cli->mutex);
794 	if (old_bo != new_bo)
795 		nouveau_bo_unpin(new_bo);
796 fail_free:
797 	kfree(s);
798 	return ret;
799 }
800 
801 int
nouveau_finish_page_flip(struct nouveau_channel * chan,struct nouveau_page_flip_state * ps)802 nouveau_finish_page_flip(struct nouveau_channel *chan,
803 			 struct nouveau_page_flip_state *ps)
804 {
805 	struct nouveau_fence_chan *fctx = chan->fence;
806 	struct nouveau_drm *drm = chan->drm;
807 	struct drm_device *dev = drm->dev;
808 	struct nouveau_page_flip_state *s;
809 	unsigned long flags;
810 	int crtcid = -1;
811 
812 	spin_lock_irqsave(&dev->event_lock, flags);
813 
814 	if (list_empty(&fctx->flip)) {
815 		NV_ERROR(drm, "unexpected pageflip\n");
816 		spin_unlock_irqrestore(&dev->event_lock, flags);
817 		return -EINVAL;
818 	}
819 
820 	s = list_first_entry(&fctx->flip, struct nouveau_page_flip_state, head);
821 	if (s->event) {
822 		/* Vblank timestamps/counts are only correct on >= NV-50 */
823 		if (drm->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
824 			crtcid = s->crtc;
825 
826 		drm_send_vblank_event(dev, crtcid, s->event);
827 	}
828 
829 	/* Give up ownership of vblank for page-flipped crtc */
830 	drm_vblank_put(dev, s->crtc);
831 
832 	list_del(&s->head);
833 	if (ps)
834 		*ps = *s;
835 	kfree(s);
836 
837 	spin_unlock_irqrestore(&dev->event_lock, flags);
838 	return 0;
839 }
840 
841 int
nouveau_flip_complete(void * data)842 nouveau_flip_complete(void *data)
843 {
844 	struct nouveau_channel *chan = data;
845 	struct nouveau_drm *drm = chan->drm;
846 	struct nouveau_page_flip_state state;
847 
848 	if (!nouveau_finish_page_flip(chan, &state)) {
849 		if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA) {
850 			nv_set_crtc_base(drm->dev, state.crtc, state.offset +
851 					 state.y * state.pitch +
852 					 state.x * state.bpp / 8);
853 		}
854 	}
855 
856 	return 0;
857 }
858 
859 int
nouveau_display_dumb_create(struct drm_file * file_priv,struct drm_device * dev,struct drm_mode_create_dumb * args)860 nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
861 			    struct drm_mode_create_dumb *args)
862 {
863 	struct nouveau_bo *bo;
864 	int ret;
865 
866 	args->pitch = roundup(args->width * (args->bpp / 8), 256);
867 	args->size = args->pitch * args->height;
868 	args->size = roundup(args->size, PAGE_SIZE);
869 
870 	ret = nouveau_gem_new(dev, args->size, 0, NOUVEAU_GEM_DOMAIN_VRAM, 0, 0, &bo);
871 	if (ret)
872 		return ret;
873 
874 	ret = drm_gem_handle_create(file_priv, &bo->gem, &args->handle);
875 	drm_gem_object_unreference_unlocked(&bo->gem);
876 	return ret;
877 }
878 
879 int
nouveau_display_dumb_map_offset(struct drm_file * file_priv,struct drm_device * dev,uint32_t handle,uint64_t * poffset)880 nouveau_display_dumb_map_offset(struct drm_file *file_priv,
881 				struct drm_device *dev,
882 				uint32_t handle, uint64_t *poffset)
883 {
884 	struct drm_gem_object *gem;
885 
886 	gem = drm_gem_object_lookup(dev, file_priv, handle);
887 	if (gem) {
888 		struct nouveau_bo *bo = nouveau_gem_object(gem);
889 		*poffset = drm_vma_node_offset_addr(&bo->bo.vma_node);
890 		drm_gem_object_unreference_unlocked(gem);
891 		return 0;
892 	}
893 
894 	return -ENOENT;
895 }
896