Merge branch 'stable-4.9' of git://git.infradead.org/users/pcmoore/audit
[linux-2.6-microblaze.git] / drivers / gpu / drm / nouveau / nouveau_display.c
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/cl0046.h>
43 #include <nvif/event.h>
44
45 static int
46 nouveau_display_vblank_handler(struct nvif_notify *notify)
47 {
48         struct nouveau_crtc *nv_crtc =
49                 container_of(notify, typeof(*nv_crtc), vblank);
50         drm_crtc_handle_vblank(&nv_crtc->base);
51         return NVIF_NOTIFY_KEEP;
52 }
53
54 int
55 nouveau_display_vblank_enable(struct drm_device *dev, unsigned int pipe)
56 {
57         struct drm_crtc *crtc;
58         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
59                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
60                 if (nv_crtc->index == pipe) {
61                         nvif_notify_get(&nv_crtc->vblank);
62                         return 0;
63                 }
64         }
65         return -EINVAL;
66 }
67
68 void
69 nouveau_display_vblank_disable(struct drm_device *dev, unsigned int pipe)
70 {
71         struct drm_crtc *crtc;
72         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
73                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
74                 if (nv_crtc->index == pipe) {
75                         nvif_notify_put(&nv_crtc->vblank);
76                         return;
77                 }
78         }
79 }
80
81 static inline int
82 calc(int blanks, int blanke, int total, int line)
83 {
84         if (blanke >= blanks) {
85                 if (line >= blanks)
86                         line -= total;
87         } else {
88                 if (line >= blanks)
89                         line -= total;
90                 line -= blanke + 1;
91         }
92         return line;
93 }
94
95 int
96 nouveau_display_scanoutpos_head(struct drm_crtc *crtc, int *vpos, int *hpos,
97                                 ktime_t *stime, ktime_t *etime)
98 {
99         struct {
100                 struct nv04_disp_mthd_v0 base;
101                 struct nv04_disp_scanoutpos_v0 scan;
102         } args = {
103                 .base.method = NV04_DISP_SCANOUTPOS,
104                 .base.head = nouveau_crtc(crtc)->index,
105         };
106         struct nouveau_display *disp = nouveau_display(crtc->dev);
107         struct drm_vblank_crtc *vblank = &crtc->dev->vblank[drm_crtc_index(crtc)];
108         int ret, retry = 1;
109
110         do {
111                 ret = nvif_mthd(&disp->disp, 0, &args, sizeof(args));
112                 if (ret != 0)
113                         return 0;
114
115                 if (args.scan.vline) {
116                         ret |= DRM_SCANOUTPOS_ACCURATE;
117                         ret |= DRM_SCANOUTPOS_VALID;
118                         break;
119                 }
120
121                 if (retry) ndelay(vblank->linedur_ns);
122         } while (retry--);
123
124         *hpos = args.scan.hline;
125         *vpos = calc(args.scan.vblanks, args.scan.vblanke,
126                      args.scan.vtotal, args.scan.vline);
127         if (stime) *stime = ns_to_ktime(args.scan.time[0]);
128         if (etime) *etime = ns_to_ktime(args.scan.time[1]);
129
130         if (*vpos < 0)
131                 ret |= DRM_SCANOUTPOS_IN_VBLANK;
132         return ret;
133 }
134
135 int
136 nouveau_display_scanoutpos(struct drm_device *dev, unsigned int pipe,
137                            unsigned int flags, int *vpos, int *hpos,
138                            ktime_t *stime, ktime_t *etime,
139                            const struct drm_display_mode *mode)
140 {
141         struct drm_crtc *crtc;
142
143         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
144                 if (nouveau_crtc(crtc)->index == pipe) {
145                         return nouveau_display_scanoutpos_head(crtc, vpos, hpos,
146                                                                stime, etime);
147                 }
148         }
149
150         return 0;
151 }
152
153 int
154 nouveau_display_vblstamp(struct drm_device *dev, unsigned int pipe,
155                          int *max_error, struct timeval *time, unsigned flags)
156 {
157         struct drm_crtc *crtc;
158
159         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
160                 if (nouveau_crtc(crtc)->index == pipe) {
161                         return drm_calc_vbltimestamp_from_scanoutpos(dev,
162                                         pipe, max_error, time, flags,
163                                         &crtc->hwmode);
164                 }
165         }
166
167         return -EINVAL;
168 }
169
170 static void
171 nouveau_display_vblank_fini(struct drm_device *dev)
172 {
173         struct drm_crtc *crtc;
174
175         drm_vblank_cleanup(dev);
176
177         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
178                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
179                 nvif_notify_fini(&nv_crtc->vblank);
180         }
181 }
182
183 static int
184 nouveau_display_vblank_init(struct drm_device *dev)
185 {
186         struct nouveau_display *disp = nouveau_display(dev);
187         struct drm_crtc *crtc;
188         int ret;
189
190         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
191                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
192                 ret = nvif_notify_init(&disp->disp,
193                                        nouveau_display_vblank_handler, false,
194                                        NV04_DISP_NTFY_VBLANK,
195                                        &(struct nvif_notify_head_req_v0) {
196                                         .head = nv_crtc->index,
197                                        },
198                                        sizeof(struct nvif_notify_head_req_v0),
199                                        sizeof(struct nvif_notify_head_rep_v0),
200                                        &nv_crtc->vblank);
201                 if (ret) {
202                         nouveau_display_vblank_fini(dev);
203                         return ret;
204                 }
205         }
206
207         ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
208         if (ret) {
209                 nouveau_display_vblank_fini(dev);
210                 return ret;
211         }
212
213         return 0;
214 }
215
216 static void
217 nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
218 {
219         struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
220         struct nouveau_display *disp = nouveau_display(drm_fb->dev);
221
222         if (disp->fb_dtor)
223                 disp->fb_dtor(drm_fb);
224
225         if (fb->nvbo)
226                 drm_gem_object_unreference_unlocked(&fb->nvbo->gem);
227
228         drm_framebuffer_cleanup(drm_fb);
229         kfree(fb);
230 }
231
232 static int
233 nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb,
234                                        struct drm_file *file_priv,
235                                        unsigned int *handle)
236 {
237         struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
238
239         return drm_gem_handle_create(file_priv, &fb->nvbo->gem, handle);
240 }
241
242 static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
243         .destroy = nouveau_user_framebuffer_destroy,
244         .create_handle = nouveau_user_framebuffer_create_handle,
245 };
246
247 int
248 nouveau_framebuffer_init(struct drm_device *dev,
249                          struct nouveau_framebuffer *nv_fb,
250                          const struct drm_mode_fb_cmd2 *mode_cmd,
251                          struct nouveau_bo *nvbo)
252 {
253         struct nouveau_display *disp = nouveau_display(dev);
254         struct drm_framebuffer *fb = &nv_fb->base;
255         int ret;
256
257         drm_helper_mode_fill_fb_struct(fb, mode_cmd);
258         nv_fb->nvbo = nvbo;
259
260         ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
261         if (ret)
262                 return ret;
263
264         if (disp->fb_ctor) {
265                 ret = disp->fb_ctor(fb);
266                 if (ret)
267                         disp->fb_dtor(fb);
268         }
269
270         return ret;
271 }
272
273 static struct drm_framebuffer *
274 nouveau_user_framebuffer_create(struct drm_device *dev,
275                                 struct drm_file *file_priv,
276                                 const struct drm_mode_fb_cmd2 *mode_cmd)
277 {
278         struct nouveau_framebuffer *nouveau_fb;
279         struct drm_gem_object *gem;
280         int ret = -ENOMEM;
281
282         gem = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
283         if (!gem)
284                 return ERR_PTR(-ENOENT);
285
286         nouveau_fb = kzalloc(sizeof(struct nouveau_framebuffer), GFP_KERNEL);
287         if (!nouveau_fb)
288                 goto err_unref;
289
290         ret = nouveau_framebuffer_init(dev, nouveau_fb, mode_cmd, nouveau_gem_object(gem));
291         if (ret)
292                 goto err;
293
294         return &nouveau_fb->base;
295
296 err:
297         kfree(nouveau_fb);
298 err_unref:
299         drm_gem_object_unreference_unlocked(gem);
300         return ERR_PTR(ret);
301 }
302
303 static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
304         .fb_create = nouveau_user_framebuffer_create,
305         .output_poll_changed = nouveau_fbcon_output_poll_changed,
306 };
307
308
309 struct nouveau_drm_prop_enum_list {
310         u8 gen_mask;
311         int type;
312         char *name;
313 };
314
315 static struct nouveau_drm_prop_enum_list underscan[] = {
316         { 6, UNDERSCAN_AUTO, "auto" },
317         { 6, UNDERSCAN_OFF, "off" },
318         { 6, UNDERSCAN_ON, "on" },
319         {}
320 };
321
322 static struct nouveau_drm_prop_enum_list dither_mode[] = {
323         { 7, DITHERING_MODE_AUTO, "auto" },
324         { 7, DITHERING_MODE_OFF, "off" },
325         { 1, DITHERING_MODE_ON, "on" },
326         { 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
327         { 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
328         { 4, DITHERING_MODE_TEMPORAL, "temporal" },
329         {}
330 };
331
332 static struct nouveau_drm_prop_enum_list dither_depth[] = {
333         { 6, DITHERING_DEPTH_AUTO, "auto" },
334         { 6, DITHERING_DEPTH_6BPC, "6 bpc" },
335         { 6, DITHERING_DEPTH_8BPC, "8 bpc" },
336         {}
337 };
338
339 #define PROP_ENUM(p,gen,n,list) do {                                           \
340         struct nouveau_drm_prop_enum_list *l = (list);                         \
341         int c = 0;                                                             \
342         while (l->gen_mask) {                                                  \
343                 if (l->gen_mask & (1 << (gen)))                                \
344                         c++;                                                   \
345                 l++;                                                           \
346         }                                                                      \
347         if (c) {                                                               \
348                 p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c);        \
349                 l = (list);                                                    \
350                 c = 0;                                                         \
351                 while (p && l->gen_mask) {                                     \
352                         if (l->gen_mask & (1 << (gen))) {                      \
353                                 drm_property_add_enum(p, c, l->type, l->name); \
354                                 c++;                                           \
355                         }                                                      \
356                         l++;                                                   \
357                 }                                                              \
358         }                                                                      \
359 } while(0)
360
361 int
362 nouveau_display_init(struct drm_device *dev)
363 {
364         struct nouveau_display *disp = nouveau_display(dev);
365         struct nouveau_drm *drm = nouveau_drm(dev);
366         struct drm_connector *connector;
367         int ret;
368
369         ret = disp->init(dev);
370         if (ret)
371                 return ret;
372
373         /* enable polling for external displays */
374         drm_kms_helper_poll_enable(dev);
375
376         /* enable hotplug interrupts */
377         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
378                 struct nouveau_connector *conn = nouveau_connector(connector);
379                 nvif_notify_get(&conn->hpd);
380         }
381
382         /* enable flip completion events */
383         nvif_notify_get(&drm->flip);
384         return ret;
385 }
386
387 void
388 nouveau_display_fini(struct drm_device *dev)
389 {
390         struct nouveau_display *disp = nouveau_display(dev);
391         struct nouveau_drm *drm = nouveau_drm(dev);
392         struct drm_connector *connector;
393         int head;
394
395         /* Make sure that drm and hw vblank irqs get properly disabled. */
396         for (head = 0; head < dev->mode_config.num_crtc; head++)
397                 drm_vblank_off(dev, head);
398
399         /* disable flip completion events */
400         nvif_notify_put(&drm->flip);
401
402         /* disable hotplug interrupts */
403         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
404                 struct nouveau_connector *conn = nouveau_connector(connector);
405                 nvif_notify_put(&conn->hpd);
406         }
407
408         drm_kms_helper_poll_disable(dev);
409         disp->fini(dev);
410 }
411
412 static void
413 nouveau_display_create_properties(struct drm_device *dev)
414 {
415         struct nouveau_display *disp = nouveau_display(dev);
416         int gen;
417
418         if (disp->disp.oclass < NV50_DISP)
419                 gen = 0;
420         else
421         if (disp->disp.oclass < GF110_DISP)
422                 gen = 1;
423         else
424                 gen = 2;
425
426         PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
427         PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
428         PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
429
430         disp->underscan_hborder_property =
431                 drm_property_create_range(dev, 0, "underscan hborder", 0, 128);
432
433         disp->underscan_vborder_property =
434                 drm_property_create_range(dev, 0, "underscan vborder", 0, 128);
435
436         if (gen < 1)
437                 return;
438
439         /* -90..+90 */
440         disp->vibrant_hue_property =
441                 drm_property_create_range(dev, 0, "vibrant hue", 0, 180);
442
443         /* -100..+100 */
444         disp->color_vibrance_property =
445                 drm_property_create_range(dev, 0, "color vibrance", 0, 200);
446 }
447
448 int
449 nouveau_display_create(struct drm_device *dev)
450 {
451         struct nouveau_drm *drm = nouveau_drm(dev);
452         struct nvkm_device *device = nvxx_device(&drm->device);
453         struct nouveau_display *disp;
454         int ret;
455
456         disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL);
457         if (!disp)
458                 return -ENOMEM;
459
460         drm_mode_config_init(dev);
461         drm_mode_create_scaling_mode_property(dev);
462         drm_mode_create_dvi_i_properties(dev);
463
464         dev->mode_config.funcs = &nouveau_mode_config_funcs;
465         dev->mode_config.fb_base = device->func->resource_addr(device, 1);
466
467         dev->mode_config.min_width = 0;
468         dev->mode_config.min_height = 0;
469         if (drm->device.info.family < NV_DEVICE_INFO_V0_CELSIUS) {
470                 dev->mode_config.max_width = 2048;
471                 dev->mode_config.max_height = 2048;
472         } else
473         if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA) {
474                 dev->mode_config.max_width = 4096;
475                 dev->mode_config.max_height = 4096;
476         } else
477         if (drm->device.info.family < NV_DEVICE_INFO_V0_FERMI) {
478                 dev->mode_config.max_width = 8192;
479                 dev->mode_config.max_height = 8192;
480         } else {
481                 dev->mode_config.max_width = 16384;
482                 dev->mode_config.max_height = 16384;
483         }
484
485         dev->mode_config.preferred_depth = 24;
486         dev->mode_config.prefer_shadow = 1;
487
488         if (drm->device.info.chipset < 0x11)
489                 dev->mode_config.async_page_flip = false;
490         else
491                 dev->mode_config.async_page_flip = true;
492
493         drm_kms_helper_poll_init(dev);
494         drm_kms_helper_poll_disable(dev);
495
496         if (nouveau_modeset != 2 && drm->vbios.dcb.entries) {
497                 static const u16 oclass[] = {
498                         GP104_DISP,
499                         GP100_DISP,
500                         GM200_DISP,
501                         GM107_DISP,
502                         GK110_DISP,
503                         GK104_DISP,
504                         GF110_DISP,
505                         GT214_DISP,
506                         GT206_DISP,
507                         GT200_DISP,
508                         G82_DISP,
509                         NV50_DISP,
510                         NV04_DISP,
511                 };
512                 int i;
513
514                 for (i = 0, ret = -ENODEV; ret && i < ARRAY_SIZE(oclass); i++) {
515                         ret = nvif_object_init(&drm->device.object, 0,
516                                                oclass[i], NULL, 0, &disp->disp);
517                 }
518
519                 if (ret == 0) {
520                         nouveau_display_create_properties(dev);
521                         if (disp->disp.oclass < NV50_DISP)
522                                 ret = nv04_display_create(dev);
523                         else
524                                 ret = nv50_display_create(dev);
525                 }
526         } else {
527                 ret = 0;
528         }
529
530         if (ret)
531                 goto disp_create_err;
532
533         if (dev->mode_config.num_crtc) {
534                 ret = nouveau_display_vblank_init(dev);
535                 if (ret)
536                         goto vblank_err;
537         }
538
539         nouveau_backlight_init(dev);
540         return 0;
541
542 vblank_err:
543         disp->dtor(dev);
544 disp_create_err:
545         drm_kms_helper_poll_fini(dev);
546         drm_mode_config_cleanup(dev);
547         return ret;
548 }
549
550 void
551 nouveau_display_destroy(struct drm_device *dev)
552 {
553         struct nouveau_display *disp = nouveau_display(dev);
554
555         nouveau_backlight_exit(dev);
556         nouveau_display_vblank_fini(dev);
557
558         drm_kms_helper_poll_fini(dev);
559         drm_crtc_force_disable_all(dev);
560         drm_mode_config_cleanup(dev);
561
562         if (disp->dtor)
563                 disp->dtor(dev);
564
565         nvif_object_fini(&disp->disp);
566
567         nouveau_drm(dev)->display = NULL;
568         kfree(disp);
569 }
570
571 int
572 nouveau_display_suspend(struct drm_device *dev, bool runtime)
573 {
574         struct drm_crtc *crtc;
575
576         nouveau_display_fini(dev);
577
578         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
579                 struct nouveau_framebuffer *nouveau_fb;
580
581                 nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
582                 if (!nouveau_fb || !nouveau_fb->nvbo)
583                         continue;
584
585                 nouveau_bo_unpin(nouveau_fb->nvbo);
586         }
587
588         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
589                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
590                 if (nv_crtc->cursor.nvbo) {
591                         if (nv_crtc->cursor.set_offset)
592                                 nouveau_bo_unmap(nv_crtc->cursor.nvbo);
593                         nouveau_bo_unpin(nv_crtc->cursor.nvbo);
594                 }
595         }
596
597         return 0;
598 }
599
600 void
601 nouveau_display_resume(struct drm_device *dev, bool runtime)
602 {
603         struct nouveau_drm *drm = nouveau_drm(dev);
604         struct drm_crtc *crtc;
605         int ret, head;
606
607         /* re-pin fb/cursors */
608         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
609                 struct nouveau_framebuffer *nouveau_fb;
610
611                 nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
612                 if (!nouveau_fb || !nouveau_fb->nvbo)
613                         continue;
614
615                 ret = nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM, true);
616                 if (ret)
617                         NV_ERROR(drm, "Could not pin framebuffer\n");
618         }
619
620         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
621                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
622                 if (!nv_crtc->cursor.nvbo)
623                         continue;
624
625                 ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM, true);
626                 if (!ret && nv_crtc->cursor.set_offset)
627                         ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
628                 if (ret)
629                         NV_ERROR(drm, "Could not pin/map cursor.\n");
630         }
631
632         nouveau_display_init(dev);
633
634         /* Force CLUT to get re-loaded during modeset */
635         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
636                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
637
638                 nv_crtc->lut.depth = 0;
639         }
640
641         /* This should ensure we don't hit a locking problem when someone
642          * wakes us up via a connector.  We should never go into suspend
643          * while the display is on anyways.
644          */
645         if (runtime)
646                 return;
647
648         drm_helper_resume_force_mode(dev);
649
650         /* Make sure that drm and hw vblank irqs get resumed if needed. */
651         for (head = 0; head < dev->mode_config.num_crtc; head++)
652                 drm_vblank_on(dev, head);
653
654         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
655                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
656
657                 if (!nv_crtc->cursor.nvbo)
658                         continue;
659
660                 if (nv_crtc->cursor.set_offset)
661                         nv_crtc->cursor.set_offset(nv_crtc, nv_crtc->cursor.nvbo->bo.offset);
662                 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
663                                                  nv_crtc->cursor_saved_y);
664         }
665 }
666
667 static int
668 nouveau_page_flip_emit(struct nouveau_channel *chan,
669                        struct nouveau_bo *old_bo,
670                        struct nouveau_bo *new_bo,
671                        struct nouveau_page_flip_state *s,
672                        struct nouveau_fence **pfence)
673 {
674         struct nouveau_fence_chan *fctx = chan->fence;
675         struct nouveau_drm *drm = chan->drm;
676         struct drm_device *dev = drm->dev;
677         unsigned long flags;
678         int ret;
679
680         /* Queue it to the pending list */
681         spin_lock_irqsave(&dev->event_lock, flags);
682         list_add_tail(&s->head, &fctx->flip);
683         spin_unlock_irqrestore(&dev->event_lock, flags);
684
685         /* Synchronize with the old framebuffer */
686         ret = nouveau_fence_sync(old_bo, chan, false, false);
687         if (ret)
688                 goto fail;
689
690         /* Emit the pageflip */
691         ret = RING_SPACE(chan, 2);
692         if (ret)
693                 goto fail;
694
695         if (drm->device.info.family < NV_DEVICE_INFO_V0_FERMI)
696                 BEGIN_NV04(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
697         else
698                 BEGIN_NVC0(chan, FermiSw, NV_SW_PAGE_FLIP, 1);
699         OUT_RING  (chan, 0x00000000);
700         FIRE_RING (chan);
701
702         ret = nouveau_fence_new(chan, false, pfence);
703         if (ret)
704                 goto fail;
705
706         return 0;
707 fail:
708         spin_lock_irqsave(&dev->event_lock, flags);
709         list_del(&s->head);
710         spin_unlock_irqrestore(&dev->event_lock, flags);
711         return ret;
712 }
713
714 int
715 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
716                        struct drm_pending_vblank_event *event, u32 flags)
717 {
718         const int swap_interval = (flags & DRM_MODE_PAGE_FLIP_ASYNC) ? 0 : 1;
719         struct drm_device *dev = crtc->dev;
720         struct nouveau_drm *drm = nouveau_drm(dev);
721         struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->primary->fb)->nvbo;
722         struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
723         struct nouveau_page_flip_state *s;
724         struct nouveau_channel *chan;
725         struct nouveau_cli *cli;
726         struct nouveau_fence *fence;
727         int ret;
728
729         chan = drm->channel;
730         if (!chan)
731                 return -ENODEV;
732         cli = (void *)chan->user.client;
733
734         s = kzalloc(sizeof(*s), GFP_KERNEL);
735         if (!s)
736                 return -ENOMEM;
737
738         if (new_bo != old_bo) {
739                 ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM, true);
740                 if (ret)
741                         goto fail_free;
742         }
743
744         mutex_lock(&cli->mutex);
745         ret = ttm_bo_reserve(&new_bo->bo, true, false, NULL);
746         if (ret)
747                 goto fail_unpin;
748
749         /* synchronise rendering channel with the kernel's channel */
750         ret = nouveau_fence_sync(new_bo, chan, false, true);
751         if (ret) {
752                 ttm_bo_unreserve(&new_bo->bo);
753                 goto fail_unpin;
754         }
755
756         if (new_bo != old_bo) {
757                 ttm_bo_unreserve(&new_bo->bo);
758
759                 ret = ttm_bo_reserve(&old_bo->bo, true, false, NULL);
760                 if (ret)
761                         goto fail_unpin;
762         }
763
764         /* Initialize a page flip struct */
765         *s = (struct nouveau_page_flip_state)
766                 { { }, event, crtc, fb->bits_per_pixel, fb->pitches[0],
767                   new_bo->bo.offset };
768
769         /* Keep vblanks on during flip, for the target crtc of this flip */
770         drm_crtc_vblank_get(crtc);
771
772         /* Emit a page flip */
773         if (drm->device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
774                 ret = nv50_display_flip_next(crtc, fb, chan, swap_interval);
775                 if (ret)
776                         goto fail_unreserve;
777         } else {
778                 struct nv04_display *dispnv04 = nv04_display(dev);
779                 int head = nouveau_crtc(crtc)->index;
780
781                 if (swap_interval) {
782                         ret = RING_SPACE(chan, 8);
783                         if (ret)
784                                 goto fail_unreserve;
785
786                         BEGIN_NV04(chan, NvSubImageBlit, 0x012c, 1);
787                         OUT_RING  (chan, 0);
788                         BEGIN_NV04(chan, NvSubImageBlit, 0x0134, 1);
789                         OUT_RING  (chan, head);
790                         BEGIN_NV04(chan, NvSubImageBlit, 0x0100, 1);
791                         OUT_RING  (chan, 0);
792                         BEGIN_NV04(chan, NvSubImageBlit, 0x0130, 1);
793                         OUT_RING  (chan, 0);
794                 }
795
796                 nouveau_bo_ref(new_bo, &dispnv04->image[head]);
797         }
798
799         ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
800         if (ret)
801                 goto fail_unreserve;
802         mutex_unlock(&cli->mutex);
803
804         /* Update the crtc struct and cleanup */
805         crtc->primary->fb = fb;
806
807         nouveau_bo_fence(old_bo, fence, false);
808         ttm_bo_unreserve(&old_bo->bo);
809         if (old_bo != new_bo)
810                 nouveau_bo_unpin(old_bo);
811         nouveau_fence_unref(&fence);
812         return 0;
813
814 fail_unreserve:
815         drm_crtc_vblank_put(crtc);
816         ttm_bo_unreserve(&old_bo->bo);
817 fail_unpin:
818         mutex_unlock(&cli->mutex);
819         if (old_bo != new_bo)
820                 nouveau_bo_unpin(new_bo);
821 fail_free:
822         kfree(s);
823         return ret;
824 }
825
826 int
827 nouveau_finish_page_flip(struct nouveau_channel *chan,
828                          struct nouveau_page_flip_state *ps)
829 {
830         struct nouveau_fence_chan *fctx = chan->fence;
831         struct nouveau_drm *drm = chan->drm;
832         struct drm_device *dev = drm->dev;
833         struct nouveau_page_flip_state *s;
834         unsigned long flags;
835
836         spin_lock_irqsave(&dev->event_lock, flags);
837
838         if (list_empty(&fctx->flip)) {
839                 NV_ERROR(drm, "unexpected pageflip\n");
840                 spin_unlock_irqrestore(&dev->event_lock, flags);
841                 return -EINVAL;
842         }
843
844         s = list_first_entry(&fctx->flip, struct nouveau_page_flip_state, head);
845         if (s->event) {
846                 if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA) {
847                         drm_crtc_arm_vblank_event(s->crtc, s->event);
848                 } else {
849                         drm_crtc_send_vblank_event(s->crtc, s->event);
850
851                         /* Give up ownership of vblank for page-flipped crtc */
852                         drm_crtc_vblank_put(s->crtc);
853                 }
854         }
855         else {
856                 /* Give up ownership of vblank for page-flipped crtc */
857                 drm_crtc_vblank_put(s->crtc);
858         }
859
860         list_del(&s->head);
861         if (ps)
862                 *ps = *s;
863         kfree(s);
864
865         spin_unlock_irqrestore(&dev->event_lock, flags);
866         return 0;
867 }
868
869 int
870 nouveau_flip_complete(struct nvif_notify *notify)
871 {
872         struct nouveau_drm *drm = container_of(notify, typeof(*drm), flip);
873         struct nouveau_channel *chan = drm->channel;
874         struct nouveau_page_flip_state state;
875
876         if (!nouveau_finish_page_flip(chan, &state)) {
877                 if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA) {
878                         nv_set_crtc_base(drm->dev, drm_crtc_index(state.crtc),
879                                          state.offset + state.crtc->y *
880                                          state.pitch + state.crtc->x *
881                                          state.bpp / 8);
882                 }
883         }
884
885         return NVIF_NOTIFY_KEEP;
886 }
887
888 int
889 nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
890                             struct drm_mode_create_dumb *args)
891 {
892         struct nouveau_bo *bo;
893         uint32_t domain;
894         int ret;
895
896         args->pitch = roundup(args->width * (args->bpp / 8), 256);
897         args->size = args->pitch * args->height;
898         args->size = roundup(args->size, PAGE_SIZE);
899
900         /* Use VRAM if there is any ; otherwise fallback to system memory */
901         if (nouveau_drm(dev)->device.info.ram_size != 0)
902                 domain = NOUVEAU_GEM_DOMAIN_VRAM;
903         else
904                 domain = NOUVEAU_GEM_DOMAIN_GART;
905
906         ret = nouveau_gem_new(dev, args->size, 0, domain, 0, 0, &bo);
907         if (ret)
908                 return ret;
909
910         ret = drm_gem_handle_create(file_priv, &bo->gem, &args->handle);
911         drm_gem_object_unreference_unlocked(&bo->gem);
912         return ret;
913 }
914
915 int
916 nouveau_display_dumb_map_offset(struct drm_file *file_priv,
917                                 struct drm_device *dev,
918                                 uint32_t handle, uint64_t *poffset)
919 {
920         struct drm_gem_object *gem;
921
922         gem = drm_gem_object_lookup(file_priv, handle);
923         if (gem) {
924                 struct nouveau_bo *bo = nouveau_gem_object(gem);
925                 *poffset = drm_vma_node_offset_addr(&bo->bo.vma_node);
926                 drm_gem_object_unreference_unlocked(gem);
927                 return 0;
928         }
929
930         return -ENOENT;
931 }