Loading...
1/*
2 * Copyright © 2007 David Airlie
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * David Airlie
25 */
26
27#include <linux/module.h>
28#include <linux/kernel.h>
29#include <linux/errno.h>
30#include <linux/string.h>
31#include <linux/mm.h>
32#include <linux/tty.h>
33#include <linux/sysrq.h>
34#include <linux/delay.h>
35#include <linux/init.h>
36#include <linux/screen_info.h>
37#include <linux/vga_switcheroo.h>
38#include <linux/console.h>
39
40#include <drm/drm_crtc.h>
41#include <drm/drm_crtc_helper.h>
42#include <drm/drm_fb_helper.h>
43#include <drm/drm_fourcc.h>
44#include <drm/drm_atomic.h>
45
46#include "nouveau_drv.h"
47#include "nouveau_gem.h"
48#include "nouveau_bo.h"
49#include "nouveau_fbcon.h"
50#include "nouveau_chan.h"
51#include "nouveau_vmm.h"
52
53#include "nouveau_crtc.h"
54
55MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
56int nouveau_nofbaccel = 0;
57module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);
58
59MODULE_PARM_DESC(fbcon_bpp, "fbcon bits-per-pixel (default: auto)");
60static int nouveau_fbcon_bpp;
61module_param_named(fbcon_bpp, nouveau_fbcon_bpp, int, 0400);
62
63static void
64nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
65{
66 struct nouveau_fbdev *fbcon = info->par;
67 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
68 struct nvif_device *device = &drm->client.device;
69 int ret;
70
71 if (info->state != FBINFO_STATE_RUNNING)
72 return;
73
74 ret = -ENODEV;
75 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
76 mutex_trylock(&drm->client.mutex)) {
77 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
78 ret = nv04_fbcon_fillrect(info, rect);
79 else
80 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
81 ret = nv50_fbcon_fillrect(info, rect);
82 else
83 ret = nvc0_fbcon_fillrect(info, rect);
84 mutex_unlock(&drm->client.mutex);
85 }
86
87 if (ret == 0)
88 return;
89
90 if (ret != -ENODEV)
91 nouveau_fbcon_gpu_lockup(info);
92 drm_fb_helper_cfb_fillrect(info, rect);
93}
94
95static void
96nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image)
97{
98 struct nouveau_fbdev *fbcon = info->par;
99 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
100 struct nvif_device *device = &drm->client.device;
101 int ret;
102
103 if (info->state != FBINFO_STATE_RUNNING)
104 return;
105
106 ret = -ENODEV;
107 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
108 mutex_trylock(&drm->client.mutex)) {
109 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
110 ret = nv04_fbcon_copyarea(info, image);
111 else
112 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
113 ret = nv50_fbcon_copyarea(info, image);
114 else
115 ret = nvc0_fbcon_copyarea(info, image);
116 mutex_unlock(&drm->client.mutex);
117 }
118
119 if (ret == 0)
120 return;
121
122 if (ret != -ENODEV)
123 nouveau_fbcon_gpu_lockup(info);
124 drm_fb_helper_cfb_copyarea(info, image);
125}
126
127static void
128nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
129{
130 struct nouveau_fbdev *fbcon = info->par;
131 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
132 struct nvif_device *device = &drm->client.device;
133 int ret;
134
135 if (info->state != FBINFO_STATE_RUNNING)
136 return;
137
138 ret = -ENODEV;
139 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
140 mutex_trylock(&drm->client.mutex)) {
141 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
142 ret = nv04_fbcon_imageblit(info, image);
143 else
144 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
145 ret = nv50_fbcon_imageblit(info, image);
146 else
147 ret = nvc0_fbcon_imageblit(info, image);
148 mutex_unlock(&drm->client.mutex);
149 }
150
151 if (ret == 0)
152 return;
153
154 if (ret != -ENODEV)
155 nouveau_fbcon_gpu_lockup(info);
156 drm_fb_helper_cfb_imageblit(info, image);
157}
158
159static int
160nouveau_fbcon_sync(struct fb_info *info)
161{
162 struct nouveau_fbdev *fbcon = info->par;
163 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
164 struct nouveau_channel *chan = drm->channel;
165 int ret;
166
167 if (!chan || !chan->accel_done || in_interrupt() ||
168 info->state != FBINFO_STATE_RUNNING ||
169 info->flags & FBINFO_HWACCEL_DISABLED)
170 return 0;
171
172 if (!mutex_trylock(&drm->client.mutex))
173 return 0;
174
175 ret = nouveau_channel_idle(chan);
176 mutex_unlock(&drm->client.mutex);
177 if (ret) {
178 nouveau_fbcon_gpu_lockup(info);
179 return 0;
180 }
181
182 chan->accel_done = false;
183 return 0;
184}
185
186static int
187nouveau_fbcon_open(struct fb_info *info, int user)
188{
189 struct nouveau_fbdev *fbcon = info->par;
190 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
191 int ret = pm_runtime_get_sync(drm->dev->dev);
192 if (ret < 0 && ret != -EACCES)
193 return ret;
194 return 0;
195}
196
197static int
198nouveau_fbcon_release(struct fb_info *info, int user)
199{
200 struct nouveau_fbdev *fbcon = info->par;
201 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
202 pm_runtime_put(drm->dev->dev);
203 return 0;
204}
205
206static struct fb_ops nouveau_fbcon_ops = {
207 .owner = THIS_MODULE,
208 DRM_FB_HELPER_DEFAULT_OPS,
209 .fb_open = nouveau_fbcon_open,
210 .fb_release = nouveau_fbcon_release,
211 .fb_fillrect = nouveau_fbcon_fillrect,
212 .fb_copyarea = nouveau_fbcon_copyarea,
213 .fb_imageblit = nouveau_fbcon_imageblit,
214 .fb_sync = nouveau_fbcon_sync,
215};
216
217static struct fb_ops nouveau_fbcon_sw_ops = {
218 .owner = THIS_MODULE,
219 DRM_FB_HELPER_DEFAULT_OPS,
220 .fb_open = nouveau_fbcon_open,
221 .fb_release = nouveau_fbcon_release,
222 .fb_fillrect = drm_fb_helper_cfb_fillrect,
223 .fb_copyarea = drm_fb_helper_cfb_copyarea,
224 .fb_imageblit = drm_fb_helper_cfb_imageblit,
225};
226
227void
228nouveau_fbcon_accel_save_disable(struct drm_device *dev)
229{
230 struct nouveau_drm *drm = nouveau_drm(dev);
231 if (drm->fbcon && drm->fbcon->helper.fbdev) {
232 drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
233 drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
234 }
235}
236
237void
238nouveau_fbcon_accel_restore(struct drm_device *dev)
239{
240 struct nouveau_drm *drm = nouveau_drm(dev);
241 if (drm->fbcon && drm->fbcon->helper.fbdev) {
242 drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
243 }
244}
245
246static void
247nouveau_fbcon_accel_fini(struct drm_device *dev)
248{
249 struct nouveau_drm *drm = nouveau_drm(dev);
250 struct nouveau_fbdev *fbcon = drm->fbcon;
251 if (fbcon && drm->channel) {
252 console_lock();
253 if (fbcon->helper.fbdev)
254 fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
255 console_unlock();
256 nouveau_channel_idle(drm->channel);
257 nvif_object_fini(&fbcon->twod);
258 nvif_object_fini(&fbcon->blit);
259 nvif_object_fini(&fbcon->gdi);
260 nvif_object_fini(&fbcon->patt);
261 nvif_object_fini(&fbcon->rop);
262 nvif_object_fini(&fbcon->clip);
263 nvif_object_fini(&fbcon->surf2d);
264 }
265}
266
267static void
268nouveau_fbcon_accel_init(struct drm_device *dev)
269{
270 struct nouveau_drm *drm = nouveau_drm(dev);
271 struct nouveau_fbdev *fbcon = drm->fbcon;
272 struct fb_info *info = fbcon->helper.fbdev;
273 int ret;
274
275 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA)
276 ret = nv04_fbcon_accel_init(info);
277 else
278 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI)
279 ret = nv50_fbcon_accel_init(info);
280 else
281 ret = nvc0_fbcon_accel_init(info);
282
283 if (ret == 0)
284 info->fbops = &nouveau_fbcon_ops;
285}
286
287static void
288nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
289{
290 struct fb_info *info = fbcon->helper.fbdev;
291 struct fb_fillrect rect;
292
293 /* Clear the entire fbcon. The drm will program every connector
294 * with it's preferred mode. If the sizes differ, one display will
295 * quite likely have garbage around the console.
296 */
297 rect.dx = rect.dy = 0;
298 rect.width = info->var.xres_virtual;
299 rect.height = info->var.yres_virtual;
300 rect.color = 0;
301 rect.rop = ROP_COPY;
302 info->fbops->fb_fillrect(info, &rect);
303}
304
305static int
306nouveau_fbcon_create(struct drm_fb_helper *helper,
307 struct drm_fb_helper_surface_size *sizes)
308{
309 struct nouveau_fbdev *fbcon =
310 container_of(helper, struct nouveau_fbdev, helper);
311 struct drm_device *dev = fbcon->helper.dev;
312 struct nouveau_drm *drm = nouveau_drm(dev);
313 struct nvif_device *device = &drm->client.device;
314 struct fb_info *info;
315 struct nouveau_framebuffer *fb;
316 struct nouveau_channel *chan;
317 struct nouveau_bo *nvbo;
318 struct drm_mode_fb_cmd2 mode_cmd;
319 int ret;
320
321 mode_cmd.width = sizes->surface_width;
322 mode_cmd.height = sizes->surface_height;
323
324 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
325 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
326
327 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
328 sizes->surface_depth);
329
330 ret = nouveau_gem_new(&drm->client, mode_cmd.pitches[0] *
331 mode_cmd.height, 0, NOUVEAU_GEM_DOMAIN_VRAM,
332 0, 0x0000, &nvbo);
333 if (ret) {
334 NV_ERROR(drm, "failed to allocate framebuffer\n");
335 goto out;
336 }
337
338 ret = nouveau_framebuffer_new(dev, &mode_cmd, nvbo, &fb);
339 if (ret)
340 goto out_unref;
341
342 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM, false);
343 if (ret) {
344 NV_ERROR(drm, "failed to pin fb: %d\n", ret);
345 goto out_unref;
346 }
347
348 ret = nouveau_bo_map(nvbo);
349 if (ret) {
350 NV_ERROR(drm, "failed to map fb: %d\n", ret);
351 goto out_unpin;
352 }
353
354 chan = nouveau_nofbaccel ? NULL : drm->channel;
355 if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
356 ret = nouveau_vma_new(nvbo, chan->vmm, &fb->vma);
357 if (ret) {
358 NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
359 chan = NULL;
360 }
361 }
362
363 info = drm_fb_helper_alloc_fbi(helper);
364 if (IS_ERR(info)) {
365 ret = PTR_ERR(info);
366 goto out_unlock;
367 }
368
369 /* setup helper */
370 fbcon->helper.fb = &fb->base;
371
372 if (!chan)
373 info->flags = FBINFO_HWACCEL_DISABLED;
374 else
375 info->flags = FBINFO_HWACCEL_COPYAREA |
376 FBINFO_HWACCEL_FILLRECT |
377 FBINFO_HWACCEL_IMAGEBLIT;
378 info->fbops = &nouveau_fbcon_sw_ops;
379 info->fix.smem_start = fb->nvbo->bo.mem.bus.base +
380 fb->nvbo->bo.mem.bus.offset;
381 info->fix.smem_len = fb->nvbo->bo.mem.num_pages << PAGE_SHIFT;
382
383 info->screen_base = nvbo_kmap_obj_iovirtual(fb->nvbo);
384 info->screen_size = fb->nvbo->bo.mem.num_pages << PAGE_SHIFT;
385
386 drm_fb_helper_fill_info(info, &fbcon->helper, sizes);
387
388 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
389
390 if (chan)
391 nouveau_fbcon_accel_init(dev);
392 nouveau_fbcon_zfill(dev, fbcon);
393
394 /* To allow resizeing without swapping buffers */
395 NV_INFO(drm, "allocated %dx%d fb: 0x%llx, bo %p\n",
396 fb->base.width, fb->base.height, fb->nvbo->bo.offset, nvbo);
397
398 vga_switcheroo_client_fb_set(dev->pdev, info);
399 return 0;
400
401out_unlock:
402 if (chan)
403 nouveau_vma_del(&fb->vma);
404 nouveau_bo_unmap(fb->nvbo);
405out_unpin:
406 nouveau_bo_unpin(fb->nvbo);
407out_unref:
408 nouveau_bo_ref(NULL, &fb->nvbo);
409out:
410 return ret;
411}
412
413static int
414nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
415{
416 struct nouveau_framebuffer *nouveau_fb = nouveau_framebuffer(fbcon->helper.fb);
417
418 drm_fb_helper_unregister_fbi(&fbcon->helper);
419 drm_fb_helper_fini(&fbcon->helper);
420
421 if (nouveau_fb && nouveau_fb->nvbo) {
422 nouveau_vma_del(&nouveau_fb->vma);
423 nouveau_bo_unmap(nouveau_fb->nvbo);
424 nouveau_bo_unpin(nouveau_fb->nvbo);
425 drm_framebuffer_put(&nouveau_fb->base);
426 }
427
428 return 0;
429}
430
431void nouveau_fbcon_gpu_lockup(struct fb_info *info)
432{
433 struct nouveau_fbdev *fbcon = info->par;
434 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
435
436 NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
437 info->flags |= FBINFO_HWACCEL_DISABLED;
438}
439
440static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
441 .fb_probe = nouveau_fbcon_create,
442};
443
444static void
445nouveau_fbcon_set_suspend_work(struct work_struct *work)
446{
447 struct nouveau_drm *drm = container_of(work, typeof(*drm), fbcon_work);
448 int state = READ_ONCE(drm->fbcon_new_state);
449
450 if (state == FBINFO_STATE_RUNNING)
451 pm_runtime_get_sync(drm->dev->dev);
452
453 console_lock();
454 if (state == FBINFO_STATE_RUNNING)
455 nouveau_fbcon_accel_restore(drm->dev);
456 drm_fb_helper_set_suspend(&drm->fbcon->helper, state);
457 if (state != FBINFO_STATE_RUNNING)
458 nouveau_fbcon_accel_save_disable(drm->dev);
459 console_unlock();
460
461 if (state == FBINFO_STATE_RUNNING) {
462 nouveau_fbcon_hotplug_resume(drm->fbcon);
463 pm_runtime_mark_last_busy(drm->dev->dev);
464 pm_runtime_put_sync(drm->dev->dev);
465 }
466}
467
468void
469nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
470{
471 struct nouveau_drm *drm = nouveau_drm(dev);
472
473 if (!drm->fbcon)
474 return;
475
476 drm->fbcon_new_state = state;
477 /* Since runtime resume can happen as a result of a sysfs operation,
478 * it's possible we already have the console locked. So handle fbcon
479 * init/deinit from a seperate work thread
480 */
481 schedule_work(&drm->fbcon_work);
482}
483
484void
485nouveau_fbcon_output_poll_changed(struct drm_device *dev)
486{
487 struct nouveau_drm *drm = nouveau_drm(dev);
488 struct nouveau_fbdev *fbcon = drm->fbcon;
489 int ret;
490
491 if (!fbcon)
492 return;
493
494 mutex_lock(&fbcon->hotplug_lock);
495
496 ret = pm_runtime_get(dev->dev);
497 if (ret == 1 || ret == -EACCES) {
498 drm_fb_helper_hotplug_event(&fbcon->helper);
499
500 pm_runtime_mark_last_busy(dev->dev);
501 pm_runtime_put_autosuspend(dev->dev);
502 } else if (ret == 0) {
503 /* If the GPU was already in the process of suspending before
504 * this event happened, then we can't block here as we'll
505 * deadlock the runtime pmops since they wait for us to
506 * finish. So, just defer this event for when we runtime
507 * resume again. It will be handled by fbcon_work.
508 */
509 NV_DEBUG(drm, "fbcon HPD event deferred until runtime resume\n");
510 fbcon->hotplug_waiting = true;
511 pm_runtime_put_noidle(drm->dev->dev);
512 } else {
513 DRM_WARN("fbcon HPD event lost due to RPM failure: %d\n",
514 ret);
515 }
516
517 mutex_unlock(&fbcon->hotplug_lock);
518}
519
520void
521nouveau_fbcon_hotplug_resume(struct nouveau_fbdev *fbcon)
522{
523 struct nouveau_drm *drm;
524
525 if (!fbcon)
526 return;
527 drm = nouveau_drm(fbcon->helper.dev);
528
529 mutex_lock(&fbcon->hotplug_lock);
530 if (fbcon->hotplug_waiting) {
531 fbcon->hotplug_waiting = false;
532
533 NV_DEBUG(drm, "Handling deferred fbcon HPD events\n");
534 drm_fb_helper_hotplug_event(&fbcon->helper);
535 }
536 mutex_unlock(&fbcon->hotplug_lock);
537}
538
539int
540nouveau_fbcon_init(struct drm_device *dev)
541{
542 struct nouveau_drm *drm = nouveau_drm(dev);
543 struct nouveau_fbdev *fbcon;
544 int preferred_bpp = nouveau_fbcon_bpp;
545 int ret;
546
547 if (!dev->mode_config.num_crtc ||
548 (dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
549 return 0;
550
551 fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
552 if (!fbcon)
553 return -ENOMEM;
554
555 drm->fbcon = fbcon;
556 INIT_WORK(&drm->fbcon_work, nouveau_fbcon_set_suspend_work);
557 mutex_init(&fbcon->hotplug_lock);
558
559 drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);
560
561 ret = drm_fb_helper_init(dev, &fbcon->helper, 4);
562 if (ret)
563 goto free;
564
565 ret = drm_fb_helper_single_add_all_connectors(&fbcon->helper);
566 if (ret)
567 goto fini;
568
569 if (preferred_bpp != 8 && preferred_bpp != 16 && preferred_bpp != 32) {
570 if (drm->client.device.info.ram_size <= 32 * 1024 * 1024)
571 preferred_bpp = 8;
572 else
573 if (drm->client.device.info.ram_size <= 64 * 1024 * 1024)
574 preferred_bpp = 16;
575 else
576 preferred_bpp = 32;
577 }
578
579 /* disable all the possible outputs/crtcs before entering KMS mode */
580 if (!drm_drv_uses_atomic_modeset(dev))
581 drm_helper_disable_unused_functions(dev);
582
583 ret = drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
584 if (ret)
585 goto fini;
586
587 if (fbcon->helper.fbdev)
588 fbcon->helper.fbdev->pixmap.buf_align = 4;
589 return 0;
590
591fini:
592 drm_fb_helper_fini(&fbcon->helper);
593free:
594 kfree(fbcon);
595 return ret;
596}
597
598void
599nouveau_fbcon_fini(struct drm_device *dev)
600{
601 struct nouveau_drm *drm = nouveau_drm(dev);
602
603 if (!drm->fbcon)
604 return;
605
606 nouveau_fbcon_accel_fini(dev);
607 nouveau_fbcon_destroy(dev, drm->fbcon);
608 kfree(drm->fbcon);
609 drm->fbcon = NULL;
610}
1/*
2 * Copyright © 2007 David Airlie
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * David Airlie
25 */
26
27#include <linux/module.h>
28#include <linux/kernel.h>
29#include <linux/errno.h>
30#include <linux/string.h>
31#include <linux/mm.h>
32#include <linux/tty.h>
33#include <linux/sysrq.h>
34#include <linux/delay.h>
35#include <linux/fb.h>
36#include <linux/init.h>
37#include <linux/screen_info.h>
38#include <linux/vga_switcheroo.h>
39#include <linux/console.h>
40
41#include "drmP.h"
42#include "drm.h"
43#include "drm_crtc.h"
44#include "drm_crtc_helper.h"
45#include "drm_fb_helper.h"
46#include "nouveau_drv.h"
47#include "nouveau_drm.h"
48#include "nouveau_crtc.h"
49#include "nouveau_fb.h"
50#include "nouveau_fbcon.h"
51#include "nouveau_dma.h"
52
53static void
54nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
55{
56 struct nouveau_fbdev *nfbdev = info->par;
57 struct drm_device *dev = nfbdev->dev;
58 struct drm_nouveau_private *dev_priv = dev->dev_private;
59 int ret;
60
61 if (info->state != FBINFO_STATE_RUNNING)
62 return;
63
64 ret = -ENODEV;
65 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
66 mutex_trylock(&dev_priv->channel->mutex)) {
67 if (dev_priv->card_type < NV_50)
68 ret = nv04_fbcon_fillrect(info, rect);
69 else
70 if (dev_priv->card_type < NV_C0)
71 ret = nv50_fbcon_fillrect(info, rect);
72 else
73 ret = nvc0_fbcon_fillrect(info, rect);
74 mutex_unlock(&dev_priv->channel->mutex);
75 }
76
77 if (ret == 0)
78 return;
79
80 if (ret != -ENODEV)
81 nouveau_fbcon_gpu_lockup(info);
82 cfb_fillrect(info, rect);
83}
84
85static void
86nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image)
87{
88 struct nouveau_fbdev *nfbdev = info->par;
89 struct drm_device *dev = nfbdev->dev;
90 struct drm_nouveau_private *dev_priv = dev->dev_private;
91 int ret;
92
93 if (info->state != FBINFO_STATE_RUNNING)
94 return;
95
96 ret = -ENODEV;
97 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
98 mutex_trylock(&dev_priv->channel->mutex)) {
99 if (dev_priv->card_type < NV_50)
100 ret = nv04_fbcon_copyarea(info, image);
101 else
102 if (dev_priv->card_type < NV_C0)
103 ret = nv50_fbcon_copyarea(info, image);
104 else
105 ret = nvc0_fbcon_copyarea(info, image);
106 mutex_unlock(&dev_priv->channel->mutex);
107 }
108
109 if (ret == 0)
110 return;
111
112 if (ret != -ENODEV)
113 nouveau_fbcon_gpu_lockup(info);
114 cfb_copyarea(info, image);
115}
116
117static void
118nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
119{
120 struct nouveau_fbdev *nfbdev = info->par;
121 struct drm_device *dev = nfbdev->dev;
122 struct drm_nouveau_private *dev_priv = dev->dev_private;
123 int ret;
124
125 if (info->state != FBINFO_STATE_RUNNING)
126 return;
127
128 ret = -ENODEV;
129 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
130 mutex_trylock(&dev_priv->channel->mutex)) {
131 if (dev_priv->card_type < NV_50)
132 ret = nv04_fbcon_imageblit(info, image);
133 else
134 if (dev_priv->card_type < NV_C0)
135 ret = nv50_fbcon_imageblit(info, image);
136 else
137 ret = nvc0_fbcon_imageblit(info, image);
138 mutex_unlock(&dev_priv->channel->mutex);
139 }
140
141 if (ret == 0)
142 return;
143
144 if (ret != -ENODEV)
145 nouveau_fbcon_gpu_lockup(info);
146 cfb_imageblit(info, image);
147}
148
149static int
150nouveau_fbcon_sync(struct fb_info *info)
151{
152 struct nouveau_fbdev *nfbdev = info->par;
153 struct drm_device *dev = nfbdev->dev;
154 struct drm_nouveau_private *dev_priv = dev->dev_private;
155 struct nouveau_channel *chan = dev_priv->channel;
156 int ret;
157
158 if (!chan || !chan->accel_done || in_interrupt() ||
159 info->state != FBINFO_STATE_RUNNING ||
160 info->flags & FBINFO_HWACCEL_DISABLED)
161 return 0;
162
163 if (!mutex_trylock(&chan->mutex))
164 return 0;
165
166 ret = nouveau_channel_idle(chan);
167 mutex_unlock(&chan->mutex);
168 if (ret) {
169 nouveau_fbcon_gpu_lockup(info);
170 return 0;
171 }
172
173 chan->accel_done = false;
174 return 0;
175}
176
177static struct fb_ops nouveau_fbcon_ops = {
178 .owner = THIS_MODULE,
179 .fb_check_var = drm_fb_helper_check_var,
180 .fb_set_par = drm_fb_helper_set_par,
181 .fb_fillrect = nouveau_fbcon_fillrect,
182 .fb_copyarea = nouveau_fbcon_copyarea,
183 .fb_imageblit = nouveau_fbcon_imageblit,
184 .fb_sync = nouveau_fbcon_sync,
185 .fb_pan_display = drm_fb_helper_pan_display,
186 .fb_blank = drm_fb_helper_blank,
187 .fb_setcmap = drm_fb_helper_setcmap,
188 .fb_debug_enter = drm_fb_helper_debug_enter,
189 .fb_debug_leave = drm_fb_helper_debug_leave,
190};
191
192static struct fb_ops nouveau_fbcon_sw_ops = {
193 .owner = THIS_MODULE,
194 .fb_check_var = drm_fb_helper_check_var,
195 .fb_set_par = drm_fb_helper_set_par,
196 .fb_fillrect = cfb_fillrect,
197 .fb_copyarea = cfb_copyarea,
198 .fb_imageblit = cfb_imageblit,
199 .fb_pan_display = drm_fb_helper_pan_display,
200 .fb_blank = drm_fb_helper_blank,
201 .fb_setcmap = drm_fb_helper_setcmap,
202 .fb_debug_enter = drm_fb_helper_debug_enter,
203 .fb_debug_leave = drm_fb_helper_debug_leave,
204};
205
206static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
207 u16 blue, int regno)
208{
209 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
210
211 nv_crtc->lut.r[regno] = red;
212 nv_crtc->lut.g[regno] = green;
213 nv_crtc->lut.b[regno] = blue;
214}
215
216static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
217 u16 *blue, int regno)
218{
219 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
220
221 *red = nv_crtc->lut.r[regno];
222 *green = nv_crtc->lut.g[regno];
223 *blue = nv_crtc->lut.b[regno];
224}
225
226static void
227nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *nfbdev)
228{
229 struct fb_info *info = nfbdev->helper.fbdev;
230 struct fb_fillrect rect;
231
232 /* Clear the entire fbcon. The drm will program every connector
233 * with it's preferred mode. If the sizes differ, one display will
234 * quite likely have garbage around the console.
235 */
236 rect.dx = rect.dy = 0;
237 rect.width = info->var.xres_virtual;
238 rect.height = info->var.yres_virtual;
239 rect.color = 0;
240 rect.rop = ROP_COPY;
241 info->fbops->fb_fillrect(info, &rect);
242}
243
244static int
245nouveau_fbcon_create(struct nouveau_fbdev *nfbdev,
246 struct drm_fb_helper_surface_size *sizes)
247{
248 struct drm_device *dev = nfbdev->dev;
249 struct drm_nouveau_private *dev_priv = dev->dev_private;
250 struct fb_info *info;
251 struct drm_framebuffer *fb;
252 struct nouveau_framebuffer *nouveau_fb;
253 struct nouveau_channel *chan;
254 struct nouveau_bo *nvbo;
255 struct drm_mode_fb_cmd2 mode_cmd;
256 struct pci_dev *pdev = dev->pdev;
257 struct device *device = &pdev->dev;
258 int size, ret;
259
260 mode_cmd.width = sizes->surface_width;
261 mode_cmd.height = sizes->surface_height;
262
263 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
264 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
265
266 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
267 sizes->surface_depth);
268
269 size = mode_cmd.pitches[0] * mode_cmd.height;
270 size = roundup(size, PAGE_SIZE);
271
272 ret = nouveau_gem_new(dev, size, 0, NOUVEAU_GEM_DOMAIN_VRAM,
273 0, 0x0000, &nvbo);
274 if (ret) {
275 NV_ERROR(dev, "failed to allocate framebuffer\n");
276 goto out;
277 }
278
279 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
280 if (ret) {
281 NV_ERROR(dev, "failed to pin fb: %d\n", ret);
282 nouveau_bo_ref(NULL, &nvbo);
283 goto out;
284 }
285
286 ret = nouveau_bo_map(nvbo);
287 if (ret) {
288 NV_ERROR(dev, "failed to map fb: %d\n", ret);
289 nouveau_bo_unpin(nvbo);
290 nouveau_bo_ref(NULL, &nvbo);
291 goto out;
292 }
293
294 chan = nouveau_nofbaccel ? NULL : dev_priv->channel;
295 if (chan && dev_priv->card_type >= NV_50) {
296 ret = nouveau_bo_vma_add(nvbo, chan->vm, &nfbdev->nouveau_fb.vma);
297 if (ret) {
298 NV_ERROR(dev, "failed to map fb into chan: %d\n", ret);
299 chan = NULL;
300 }
301 }
302
303 mutex_lock(&dev->struct_mutex);
304
305 info = framebuffer_alloc(0, device);
306 if (!info) {
307 ret = -ENOMEM;
308 goto out_unref;
309 }
310
311 ret = fb_alloc_cmap(&info->cmap, 256, 0);
312 if (ret) {
313 ret = -ENOMEM;
314 goto out_unref;
315 }
316
317 info->par = nfbdev;
318
319 nouveau_framebuffer_init(dev, &nfbdev->nouveau_fb, &mode_cmd, nvbo);
320
321 nouveau_fb = &nfbdev->nouveau_fb;
322 fb = &nouveau_fb->base;
323
324 /* setup helper */
325 nfbdev->helper.fb = fb;
326 nfbdev->helper.fbdev = info;
327
328 strcpy(info->fix.id, "nouveaufb");
329 if (nouveau_nofbaccel)
330 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
331 else
332 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
333 FBINFO_HWACCEL_FILLRECT |
334 FBINFO_HWACCEL_IMAGEBLIT;
335 info->flags |= FBINFO_CAN_FORCE_OUTPUT;
336 info->fbops = &nouveau_fbcon_sw_ops;
337 info->fix.smem_start = nvbo->bo.mem.bus.base +
338 nvbo->bo.mem.bus.offset;
339 info->fix.smem_len = size;
340
341 info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
342 info->screen_size = size;
343
344 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
345 drm_fb_helper_fill_var(info, &nfbdev->helper, sizes->fb_width, sizes->fb_height);
346
347 /* Set aperture base/size for vesafb takeover */
348 info->apertures = dev_priv->apertures;
349 if (!info->apertures) {
350 ret = -ENOMEM;
351 goto out_unref;
352 }
353
354 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
355
356 mutex_unlock(&dev->struct_mutex);
357
358 if (dev_priv->channel && !nouveau_nofbaccel) {
359 ret = -ENODEV;
360 if (dev_priv->card_type < NV_50)
361 ret = nv04_fbcon_accel_init(info);
362 else
363 if (dev_priv->card_type < NV_C0)
364 ret = nv50_fbcon_accel_init(info);
365 else
366 ret = nvc0_fbcon_accel_init(info);
367
368 if (ret == 0)
369 info->fbops = &nouveau_fbcon_ops;
370 }
371
372 nouveau_fbcon_zfill(dev, nfbdev);
373
374 /* To allow resizeing without swapping buffers */
375 NV_INFO(dev, "allocated %dx%d fb: 0x%lx, bo %p\n",
376 nouveau_fb->base.width,
377 nouveau_fb->base.height,
378 nvbo->bo.offset, nvbo);
379
380 vga_switcheroo_client_fb_set(dev->pdev, info);
381 return 0;
382
383out_unref:
384 mutex_unlock(&dev->struct_mutex);
385out:
386 return ret;
387}
388
389static int
390nouveau_fbcon_find_or_create_single(struct drm_fb_helper *helper,
391 struct drm_fb_helper_surface_size *sizes)
392{
393 struct nouveau_fbdev *nfbdev = (struct nouveau_fbdev *)helper;
394 int new_fb = 0;
395 int ret;
396
397 if (!helper->fb) {
398 ret = nouveau_fbcon_create(nfbdev, sizes);
399 if (ret)
400 return ret;
401 new_fb = 1;
402 }
403 return new_fb;
404}
405
406void
407nouveau_fbcon_output_poll_changed(struct drm_device *dev)
408{
409 struct drm_nouveau_private *dev_priv = dev->dev_private;
410 drm_fb_helper_hotplug_event(&dev_priv->nfbdev->helper);
411}
412
413static int
414nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *nfbdev)
415{
416 struct nouveau_framebuffer *nouveau_fb = &nfbdev->nouveau_fb;
417 struct fb_info *info;
418
419 if (nfbdev->helper.fbdev) {
420 info = nfbdev->helper.fbdev;
421 unregister_framebuffer(info);
422 if (info->cmap.len)
423 fb_dealloc_cmap(&info->cmap);
424 framebuffer_release(info);
425 }
426
427 if (nouveau_fb->nvbo) {
428 nouveau_bo_unmap(nouveau_fb->nvbo);
429 nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
430 drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem);
431 nouveau_fb->nvbo = NULL;
432 }
433 drm_fb_helper_fini(&nfbdev->helper);
434 drm_framebuffer_cleanup(&nouveau_fb->base);
435 return 0;
436}
437
438void nouveau_fbcon_gpu_lockup(struct fb_info *info)
439{
440 struct nouveau_fbdev *nfbdev = info->par;
441 struct drm_device *dev = nfbdev->dev;
442
443 NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
444 info->flags |= FBINFO_HWACCEL_DISABLED;
445}
446
447static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
448 .gamma_set = nouveau_fbcon_gamma_set,
449 .gamma_get = nouveau_fbcon_gamma_get,
450 .fb_probe = nouveau_fbcon_find_or_create_single,
451};
452
453
454int nouveau_fbcon_init(struct drm_device *dev)
455{
456 struct drm_nouveau_private *dev_priv = dev->dev_private;
457 struct nouveau_fbdev *nfbdev;
458 int preferred_bpp;
459 int ret;
460
461 nfbdev = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
462 if (!nfbdev)
463 return -ENOMEM;
464
465 nfbdev->dev = dev;
466 dev_priv->nfbdev = nfbdev;
467 nfbdev->helper.funcs = &nouveau_fbcon_helper_funcs;
468
469 ret = drm_fb_helper_init(dev, &nfbdev->helper,
470 dev->mode_config.num_crtc, 4);
471 if (ret) {
472 kfree(nfbdev);
473 return ret;
474 }
475
476 drm_fb_helper_single_add_all_connectors(&nfbdev->helper);
477
478 if (dev_priv->vram_size <= 32 * 1024 * 1024)
479 preferred_bpp = 8;
480 else if (dev_priv->vram_size <= 64 * 1024 * 1024)
481 preferred_bpp = 16;
482 else
483 preferred_bpp = 32;
484
485 drm_fb_helper_initial_config(&nfbdev->helper, preferred_bpp);
486 return 0;
487}
488
489void nouveau_fbcon_fini(struct drm_device *dev)
490{
491 struct drm_nouveau_private *dev_priv = dev->dev_private;
492
493 if (!dev_priv->nfbdev)
494 return;
495
496 nouveau_fbcon_destroy(dev, dev_priv->nfbdev);
497 kfree(dev_priv->nfbdev);
498 dev_priv->nfbdev = NULL;
499}
500
501void nouveau_fbcon_save_disable_accel(struct drm_device *dev)
502{
503 struct drm_nouveau_private *dev_priv = dev->dev_private;
504
505 dev_priv->nfbdev->saved_flags = dev_priv->nfbdev->helper.fbdev->flags;
506 dev_priv->nfbdev->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
507}
508
509void nouveau_fbcon_restore_accel(struct drm_device *dev)
510{
511 struct drm_nouveau_private *dev_priv = dev->dev_private;
512 dev_priv->nfbdev->helper.fbdev->flags = dev_priv->nfbdev->saved_flags;
513}
514
515void nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
516{
517 struct drm_nouveau_private *dev_priv = dev->dev_private;
518 console_lock();
519 if (state == 0)
520 nouveau_fbcon_save_disable_accel(dev);
521 fb_set_suspend(dev_priv->nfbdev->helper.fbdev, state);
522 if (state == 1)
523 nouveau_fbcon_restore_accel(dev);
524 console_unlock();
525}
526
527void nouveau_fbcon_zfill_all(struct drm_device *dev)
528{
529 struct drm_nouveau_private *dev_priv = dev->dev_private;
530 nouveau_fbcon_zfill(dev, dev_priv->nfbdev);
531}