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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 <drm/drmP.h>
42#include <drm/drm_crtc.h>
43#include <drm/drm_crtc_helper.h>
44#include <drm/drm_fb_helper.h>
45
46#include "nouveau_drm.h"
47#include "nouveau_gem.h"
48#include "nouveau_bo.h"
49#include "nouveau_fbcon.h"
50#include "nouveau_chan.h"
51
52#include "nouveau_crtc.h"
53
54MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
55static int nouveau_nofbaccel = 0;
56module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);
57
58static void
59nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
60{
61 struct nouveau_fbdev *fbcon = info->par;
62 struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
63 struct nvif_device *device = &drm->device;
64 int ret;
65
66 if (info->state != FBINFO_STATE_RUNNING)
67 return;
68
69 ret = -ENODEV;
70 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
71 mutex_trylock(&drm->client.mutex)) {
72 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
73 ret = nv04_fbcon_fillrect(info, rect);
74 else
75 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
76 ret = nv50_fbcon_fillrect(info, rect);
77 else
78 ret = nvc0_fbcon_fillrect(info, rect);
79 mutex_unlock(&drm->client.mutex);
80 }
81
82 if (ret == 0)
83 return;
84
85 if (ret != -ENODEV)
86 nouveau_fbcon_gpu_lockup(info);
87 cfb_fillrect(info, rect);
88}
89
90static void
91nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image)
92{
93 struct nouveau_fbdev *fbcon = info->par;
94 struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
95 struct nvif_device *device = &drm->device;
96 int ret;
97
98 if (info->state != FBINFO_STATE_RUNNING)
99 return;
100
101 ret = -ENODEV;
102 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
103 mutex_trylock(&drm->client.mutex)) {
104 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
105 ret = nv04_fbcon_copyarea(info, image);
106 else
107 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
108 ret = nv50_fbcon_copyarea(info, image);
109 else
110 ret = nvc0_fbcon_copyarea(info, image);
111 mutex_unlock(&drm->client.mutex);
112 }
113
114 if (ret == 0)
115 return;
116
117 if (ret != -ENODEV)
118 nouveau_fbcon_gpu_lockup(info);
119 cfb_copyarea(info, image);
120}
121
122static void
123nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
124{
125 struct nouveau_fbdev *fbcon = info->par;
126 struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
127 struct nvif_device *device = &drm->device;
128 int ret;
129
130 if (info->state != FBINFO_STATE_RUNNING)
131 return;
132
133 ret = -ENODEV;
134 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
135 mutex_trylock(&drm->client.mutex)) {
136 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
137 ret = nv04_fbcon_imageblit(info, image);
138 else
139 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
140 ret = nv50_fbcon_imageblit(info, image);
141 else
142 ret = nvc0_fbcon_imageblit(info, image);
143 mutex_unlock(&drm->client.mutex);
144 }
145
146 if (ret == 0)
147 return;
148
149 if (ret != -ENODEV)
150 nouveau_fbcon_gpu_lockup(info);
151 cfb_imageblit(info, image);
152}
153
154static int
155nouveau_fbcon_sync(struct fb_info *info)
156{
157 struct nouveau_fbdev *fbcon = info->par;
158 struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
159 struct nouveau_channel *chan = drm->channel;
160 int ret;
161
162 if (!chan || !chan->accel_done || in_interrupt() ||
163 info->state != FBINFO_STATE_RUNNING ||
164 info->flags & FBINFO_HWACCEL_DISABLED)
165 return 0;
166
167 if (!mutex_trylock(&drm->client.mutex))
168 return 0;
169
170 ret = nouveau_channel_idle(chan);
171 mutex_unlock(&drm->client.mutex);
172 if (ret) {
173 nouveau_fbcon_gpu_lockup(info);
174 return 0;
175 }
176
177 chan->accel_done = false;
178 return 0;
179}
180
181static struct fb_ops nouveau_fbcon_ops = {
182 .owner = THIS_MODULE,
183 .fb_check_var = drm_fb_helper_check_var,
184 .fb_set_par = drm_fb_helper_set_par,
185 .fb_fillrect = nouveau_fbcon_fillrect,
186 .fb_copyarea = nouveau_fbcon_copyarea,
187 .fb_imageblit = nouveau_fbcon_imageblit,
188 .fb_sync = nouveau_fbcon_sync,
189 .fb_pan_display = drm_fb_helper_pan_display,
190 .fb_blank = drm_fb_helper_blank,
191 .fb_setcmap = drm_fb_helper_setcmap,
192 .fb_debug_enter = drm_fb_helper_debug_enter,
193 .fb_debug_leave = drm_fb_helper_debug_leave,
194};
195
196static struct fb_ops nouveau_fbcon_sw_ops = {
197 .owner = THIS_MODULE,
198 .fb_check_var = drm_fb_helper_check_var,
199 .fb_set_par = drm_fb_helper_set_par,
200 .fb_fillrect = cfb_fillrect,
201 .fb_copyarea = cfb_copyarea,
202 .fb_imageblit = cfb_imageblit,
203 .fb_pan_display = drm_fb_helper_pan_display,
204 .fb_blank = drm_fb_helper_blank,
205 .fb_setcmap = drm_fb_helper_setcmap,
206 .fb_debug_enter = drm_fb_helper_debug_enter,
207 .fb_debug_leave = drm_fb_helper_debug_leave,
208};
209
210void
211nouveau_fbcon_accel_save_disable(struct drm_device *dev)
212{
213 struct nouveau_drm *drm = nouveau_drm(dev);
214 if (drm->fbcon) {
215 drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
216 drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
217 }
218}
219
220void
221nouveau_fbcon_accel_restore(struct drm_device *dev)
222{
223 struct nouveau_drm *drm = nouveau_drm(dev);
224 if (drm->fbcon) {
225 drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
226 }
227}
228
229static void
230nouveau_fbcon_accel_fini(struct drm_device *dev)
231{
232 struct nouveau_drm *drm = nouveau_drm(dev);
233 struct nouveau_fbdev *fbcon = drm->fbcon;
234 if (fbcon && drm->channel) {
235 console_lock();
236 fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
237 console_unlock();
238 nouveau_channel_idle(drm->channel);
239 nvif_object_fini(&fbcon->twod);
240 nvif_object_fini(&fbcon->blit);
241 nvif_object_fini(&fbcon->gdi);
242 nvif_object_fini(&fbcon->patt);
243 nvif_object_fini(&fbcon->rop);
244 nvif_object_fini(&fbcon->clip);
245 nvif_object_fini(&fbcon->surf2d);
246 }
247}
248
249static void
250nouveau_fbcon_accel_init(struct drm_device *dev)
251{
252 struct nouveau_drm *drm = nouveau_drm(dev);
253 struct nouveau_fbdev *fbcon = drm->fbcon;
254 struct fb_info *info = fbcon->helper.fbdev;
255 int ret;
256
257 if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA)
258 ret = nv04_fbcon_accel_init(info);
259 else
260 if (drm->device.info.family < NV_DEVICE_INFO_V0_FERMI)
261 ret = nv50_fbcon_accel_init(info);
262 else
263 ret = nvc0_fbcon_accel_init(info);
264
265 if (ret == 0)
266 info->fbops = &nouveau_fbcon_ops;
267}
268
269static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
270 u16 blue, int regno)
271{
272 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
273
274 nv_crtc->lut.r[regno] = red;
275 nv_crtc->lut.g[regno] = green;
276 nv_crtc->lut.b[regno] = blue;
277}
278
279static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
280 u16 *blue, int regno)
281{
282 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
283
284 *red = nv_crtc->lut.r[regno];
285 *green = nv_crtc->lut.g[regno];
286 *blue = nv_crtc->lut.b[regno];
287}
288
289static void
290nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
291{
292 struct fb_info *info = fbcon->helper.fbdev;
293 struct fb_fillrect rect;
294
295
296
297
298
299 rect.dx = rect.dy = 0;
300 rect.width = info->var.xres_virtual;
301 rect.height = info->var.yres_virtual;
302 rect.color = 0;
303 rect.rop = ROP_COPY;
304 info->fbops->fb_fillrect(info, &rect);
305}
306
307static int
308nouveau_fbcon_create(struct drm_fb_helper *helper,
309 struct drm_fb_helper_surface_size *sizes)
310{
311 struct nouveau_fbdev *fbcon = (struct nouveau_fbdev *)helper;
312 struct drm_device *dev = fbcon->dev;
313 struct nouveau_drm *drm = nouveau_drm(dev);
314 struct nvif_device *device = &drm->device;
315 struct fb_info *info;
316 struct drm_framebuffer *fb;
317 struct nouveau_framebuffer *nouveau_fb;
318 struct nouveau_channel *chan;
319 struct nouveau_bo *nvbo;
320 struct drm_mode_fb_cmd2 mode_cmd;
321 struct pci_dev *pdev = dev->pdev;
322 int size, ret;
323
324 mode_cmd.width = sizes->surface_width;
325 mode_cmd.height = sizes->surface_height;
326
327 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
328 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
329
330 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
331 sizes->surface_depth);
332
333 size = mode_cmd.pitches[0] * mode_cmd.height;
334 size = roundup(size, PAGE_SIZE);
335
336 ret = nouveau_gem_new(dev, size, 0, NOUVEAU_GEM_DOMAIN_VRAM,
337 0, 0x0000, &nvbo);
338 if (ret) {
339 NV_ERROR(drm, "failed to allocate framebuffer\n");
340 goto out;
341 }
342
343 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
344 if (ret) {
345 NV_ERROR(drm, "failed to pin fb: %d\n", ret);
346 goto out_unref;
347 }
348
349 ret = nouveau_bo_map(nvbo);
350 if (ret) {
351 NV_ERROR(drm, "failed to map fb: %d\n", ret);
352 goto out_unpin;
353 }
354
355 chan = nouveau_nofbaccel ? NULL : drm->channel;
356 if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
357 ret = nouveau_bo_vma_add(nvbo, drm->client.vm,
358 &fbcon->nouveau_fb.vma);
359 if (ret) {
360 NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
361 chan = NULL;
362 }
363 }
364
365 mutex_lock(&dev->struct_mutex);
366
367 info = framebuffer_alloc(0, &pdev->dev);
368 if (!info) {
369 ret = -ENOMEM;
370 goto out_unlock;
371 }
372
373 ret = fb_alloc_cmap(&info->cmap, 256, 0);
374 if (ret) {
375 ret = -ENOMEM;
376 framebuffer_release(info);
377 goto out_unlock;
378 }
379
380 info->par = fbcon;
381
382 nouveau_framebuffer_init(dev, &fbcon->nouveau_fb, &mode_cmd, nvbo);
383
384 nouveau_fb = &fbcon->nouveau_fb;
385 fb = &nouveau_fb->base;
386
387
388 fbcon->helper.fb = fb;
389 fbcon->helper.fbdev = info;
390
391 strcpy(info->fix.id, "nouveaufb");
392 if (!chan)
393 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
394 else
395 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
396 FBINFO_HWACCEL_FILLRECT |
397 FBINFO_HWACCEL_IMAGEBLIT;
398 info->flags |= FBINFO_CAN_FORCE_OUTPUT;
399 info->fbops = &nouveau_fbcon_sw_ops;
400 info->fix.smem_start = nvbo->bo.mem.bus.base +
401 nvbo->bo.mem.bus.offset;
402 info->fix.smem_len = size;
403
404 info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
405 info->screen_size = size;
406
407 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
408 drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height);
409
410
411
412 mutex_unlock(&dev->struct_mutex);
413
414 if (chan)
415 nouveau_fbcon_accel_init(dev);
416 nouveau_fbcon_zfill(dev, fbcon);
417
418
419 NV_INFO(drm, "allocated %dx%d fb: 0x%lx, bo %p\n",
420 nouveau_fb->base.width, nouveau_fb->base.height,
421 nvbo->bo.offset, nvbo);
422
423 vga_switcheroo_client_fb_set(dev->pdev, info);
424 return 0;
425
426out_unlock:
427 mutex_unlock(&dev->struct_mutex);
428 if (chan)
429 nouveau_bo_vma_del(nvbo, &fbcon->nouveau_fb.vma);
430 nouveau_bo_unmap(nvbo);
431out_unpin:
432 nouveau_bo_unpin(nvbo);
433out_unref:
434 nouveau_bo_ref(NULL, &nvbo);
435out:
436 return ret;
437}
438
439void
440nouveau_fbcon_output_poll_changed(struct drm_device *dev)
441{
442 struct nouveau_drm *drm = nouveau_drm(dev);
443 if (drm->fbcon)
444 drm_fb_helper_hotplug_event(&drm->fbcon->helper);
445}
446
447static int
448nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
449{
450 struct nouveau_framebuffer *nouveau_fb = &fbcon->nouveau_fb;
451 struct fb_info *info;
452
453 if (fbcon->helper.fbdev) {
454 info = fbcon->helper.fbdev;
455 unregister_framebuffer(info);
456 if (info->cmap.len)
457 fb_dealloc_cmap(&info->cmap);
458 framebuffer_release(info);
459 }
460
461 if (nouveau_fb->nvbo) {
462 nouveau_bo_unmap(nouveau_fb->nvbo);
463 nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
464 nouveau_bo_unpin(nouveau_fb->nvbo);
465 drm_gem_object_unreference_unlocked(&nouveau_fb->nvbo->gem);
466 nouveau_fb->nvbo = NULL;
467 }
468 drm_fb_helper_fini(&fbcon->helper);
469 drm_framebuffer_unregister_private(&nouveau_fb->base);
470 drm_framebuffer_cleanup(&nouveau_fb->base);
471 return 0;
472}
473
474void nouveau_fbcon_gpu_lockup(struct fb_info *info)
475{
476 struct nouveau_fbdev *fbcon = info->par;
477 struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
478
479 NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
480 info->flags |= FBINFO_HWACCEL_DISABLED;
481}
482
483static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
484 .gamma_set = nouveau_fbcon_gamma_set,
485 .gamma_get = nouveau_fbcon_gamma_get,
486 .fb_probe = nouveau_fbcon_create,
487};
488
489static void
490nouveau_fbcon_set_suspend_work(struct work_struct *work)
491{
492 struct nouveau_fbdev *fbcon = container_of(work, typeof(*fbcon), work);
493 console_lock();
494 nouveau_fbcon_accel_restore(fbcon->dev);
495 nouveau_fbcon_zfill(fbcon->dev, fbcon);
496 fb_set_suspend(fbcon->helper.fbdev, FBINFO_STATE_RUNNING);
497 console_unlock();
498}
499
500int
501nouveau_fbcon_init(struct drm_device *dev)
502{
503 struct nouveau_drm *drm = nouveau_drm(dev);
504 struct nouveau_fbdev *fbcon;
505 int preferred_bpp;
506 int ret;
507
508 if (!dev->mode_config.num_crtc ||
509 (dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
510 return 0;
511
512 fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
513 if (!fbcon)
514 return -ENOMEM;
515
516 INIT_WORK(&fbcon->work, nouveau_fbcon_set_suspend_work);
517 fbcon->dev = dev;
518 drm->fbcon = fbcon;
519
520 drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);
521
522 ret = drm_fb_helper_init(dev, &fbcon->helper,
523 dev->mode_config.num_crtc, 4);
524 if (ret) {
525 kfree(fbcon);
526 return ret;
527 }
528
529 drm_fb_helper_single_add_all_connectors(&fbcon->helper);
530
531 if (drm->device.info.ram_size <= 32 * 1024 * 1024)
532 preferred_bpp = 8;
533 else
534 if (drm->device.info.ram_size <= 64 * 1024 * 1024)
535 preferred_bpp = 16;
536 else
537 preferred_bpp = 32;
538
539
540 drm_helper_disable_unused_functions(dev);
541
542 drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
543 return 0;
544}
545
546void
547nouveau_fbcon_fini(struct drm_device *dev)
548{
549 struct nouveau_drm *drm = nouveau_drm(dev);
550
551 if (!drm->fbcon)
552 return;
553
554 nouveau_fbcon_accel_fini(dev);
555 nouveau_fbcon_destroy(dev, drm->fbcon);
556 kfree(drm->fbcon);
557 drm->fbcon = NULL;
558}
559
560void
561nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
562{
563 struct nouveau_drm *drm = nouveau_drm(dev);
564 if (drm->fbcon) {
565 if (state == FBINFO_STATE_RUNNING) {
566 schedule_work(&drm->fbcon->work);
567 return;
568 }
569 flush_work(&drm->fbcon->work);
570 console_lock();
571 fb_set_suspend(drm->fbcon->helper.fbdev, state);
572 nouveau_fbcon_accel_save_disable(dev);
573 console_unlock();
574 }
575}
576
