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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");
55int 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 =
312 container_of(helper, struct nouveau_fbdev, helper);
313 struct drm_device *dev = fbcon->dev;
314 struct nouveau_drm *drm = nouveau_drm(dev);
315 struct nvif_device *device = &drm->device;
316 struct fb_info *info;
317 struct drm_framebuffer *fb;
318 struct nouveau_framebuffer *nouveau_fb;
319 struct nouveau_channel *chan;
320 struct nouveau_bo *nvbo;
321 struct drm_mode_fb_cmd2 mode_cmd;
322 struct pci_dev *pdev = dev->pdev;
323 int size, ret;
324
325 mode_cmd.width = sizes->surface_width;
326 mode_cmd.height = sizes->surface_height;
327
328 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
329 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
330
331 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
332 sizes->surface_depth);
333
334 size = mode_cmd.pitches[0] * mode_cmd.height;
335 size = roundup(size, PAGE_SIZE);
336
337 ret = nouveau_gem_new(dev, size, 0, NOUVEAU_GEM_DOMAIN_VRAM,
338 0, 0x0000, &nvbo);
339 if (ret) {
340 NV_ERROR(drm, "failed to allocate framebuffer\n");
341 goto out;
342 }
343
344 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM, false);
345 if (ret) {
346 NV_ERROR(drm, "failed to pin fb: %d\n", ret);
347 goto out_unref;
348 }
349
350 ret = nouveau_bo_map(nvbo);
351 if (ret) {
352 NV_ERROR(drm, "failed to map fb: %d\n", ret);
353 goto out_unpin;
354 }
355
356 chan = nouveau_nofbaccel ? NULL : drm->channel;
357 if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
358 ret = nouveau_bo_vma_add(nvbo, drm->client.vm,
359 &fbcon->nouveau_fb.vma);
360 if (ret) {
361 NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
362 chan = NULL;
363 }
364 }
365
366 mutex_lock(&dev->struct_mutex);
367
368 info = framebuffer_alloc(0, &pdev->dev);
369 if (!info) {
370 ret = -ENOMEM;
371 goto out_unlock;
372 }
373 info->skip_vt_switch = 1;
374
375 ret = fb_alloc_cmap(&info->cmap, 256, 0);
376 if (ret) {
377 ret = -ENOMEM;
378 framebuffer_release(info);
379 goto out_unlock;
380 }
381
382 info->par = fbcon;
383
384 nouveau_framebuffer_init(dev, &fbcon->nouveau_fb, &mode_cmd, nvbo);
385
386 nouveau_fb = &fbcon->nouveau_fb;
387 fb = &nouveau_fb->base;
388
389
390 fbcon->helper.fb = fb;
391 fbcon->helper.fbdev = info;
392
393 strcpy(info->fix.id, "nouveaufb");
394 if (!chan)
395 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
396 else
397 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
398 FBINFO_HWACCEL_FILLRECT |
399 FBINFO_HWACCEL_IMAGEBLIT;
400 info->flags |= FBINFO_CAN_FORCE_OUTPUT;
401 info->fbops = &nouveau_fbcon_sw_ops;
402 info->fix.smem_start = nvbo->bo.mem.bus.base +
403 nvbo->bo.mem.bus.offset;
404 info->fix.smem_len = size;
405
406 info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
407 info->screen_size = size;
408
409 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
410 drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height);
411
412
413
414 mutex_unlock(&dev->struct_mutex);
415
416 if (chan)
417 nouveau_fbcon_accel_init(dev);
418 nouveau_fbcon_zfill(dev, fbcon);
419
420
421 NV_INFO(drm, "allocated %dx%d fb: 0x%llx, bo %p\n",
422 nouveau_fb->base.width, nouveau_fb->base.height,
423 nvbo->bo.offset, nvbo);
424
425 vga_switcheroo_client_fb_set(dev->pdev, info);
426 return 0;
427
428out_unlock:
429 mutex_unlock(&dev->struct_mutex);
430 if (chan)
431 nouveau_bo_vma_del(nvbo, &fbcon->nouveau_fb.vma);
432 nouveau_bo_unmap(nvbo);
433out_unpin:
434 nouveau_bo_unpin(nvbo);
435out_unref:
436 nouveau_bo_ref(NULL, &nvbo);
437out:
438 return ret;
439}
440
441void
442nouveau_fbcon_output_poll_changed(struct drm_device *dev)
443{
444 struct nouveau_drm *drm = nouveau_drm(dev);
445 if (drm->fbcon)
446 drm_fb_helper_hotplug_event(&drm->fbcon->helper);
447}
448
449static int
450nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
451{
452 struct nouveau_framebuffer *nouveau_fb = &fbcon->nouveau_fb;
453 struct fb_info *info;
454
455 if (fbcon->helper.fbdev) {
456 info = fbcon->helper.fbdev;
457 unregister_framebuffer(info);
458 if (info->cmap.len)
459 fb_dealloc_cmap(&info->cmap);
460 framebuffer_release(info);
461 }
462
463 if (nouveau_fb->nvbo) {
464 nouveau_bo_unmap(nouveau_fb->nvbo);
465 nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
466 nouveau_bo_unpin(nouveau_fb->nvbo);
467 drm_gem_object_unreference_unlocked(&nouveau_fb->nvbo->gem);
468 nouveau_fb->nvbo = NULL;
469 }
470 drm_fb_helper_fini(&fbcon->helper);
471 drm_framebuffer_unregister_private(&nouveau_fb->base);
472 drm_framebuffer_cleanup(&nouveau_fb->base);
473 return 0;
474}
475
476void nouveau_fbcon_gpu_lockup(struct fb_info *info)
477{
478 struct nouveau_fbdev *fbcon = info->par;
479 struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
480
481 NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
482 info->flags |= FBINFO_HWACCEL_DISABLED;
483}
484
485static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
486 .gamma_set = nouveau_fbcon_gamma_set,
487 .gamma_get = nouveau_fbcon_gamma_get,
488 .fb_probe = nouveau_fbcon_create,
489};
490
491void
492nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
493{
494 struct nouveau_drm *drm = nouveau_drm(dev);
495 if (drm->fbcon) {
496 console_lock();
497 if (state == FBINFO_STATE_RUNNING)
498 nouveau_fbcon_accel_restore(dev);
499 fb_set_suspend(drm->fbcon->helper.fbdev, state);
500 if (state != FBINFO_STATE_RUNNING)
501 nouveau_fbcon_accel_save_disable(dev);
502 console_unlock();
503 }
504}
505
506int
507nouveau_fbcon_init(struct drm_device *dev)
508{
509 struct nouveau_drm *drm = nouveau_drm(dev);
510 struct nouveau_fbdev *fbcon;
511 int preferred_bpp;
512 int ret;
513
514 if (!dev->mode_config.num_crtc ||
515 (dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
516 return 0;
517
518 fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
519 if (!fbcon)
520 return -ENOMEM;
521
522 fbcon->dev = dev;
523 drm->fbcon = fbcon;
524
525 drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);
526
527 ret = drm_fb_helper_init(dev, &fbcon->helper,
528 dev->mode_config.num_crtc, 4);
529 if (ret)
530 goto free;
531
532 ret = drm_fb_helper_single_add_all_connectors(&fbcon->helper);
533 if (ret)
534 goto fini;
535
536 if (drm->device.info.ram_size <= 32 * 1024 * 1024)
537 preferred_bpp = 8;
538 else
539 if (drm->device.info.ram_size <= 64 * 1024 * 1024)
540 preferred_bpp = 16;
541 else
542 preferred_bpp = 32;
543
544
545 drm_helper_disable_unused_functions(dev);
546
547 ret = drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
548 if (ret)
549 goto fini;
550
551 return 0;
552
553fini:
554 drm_fb_helper_fini(&fbcon->helper);
555free:
556 kfree(fbcon);
557 return ret;
558}
559
560void
561nouveau_fbcon_fini(struct drm_device *dev)
562{
563 struct nouveau_drm *drm = nouveau_drm(dev);
564
565 if (!drm->fbcon)
566 return;
567
568 nouveau_fbcon_accel_fini(dev);
569 nouveau_fbcon_destroy(dev, drm->fbcon);
570 kfree(drm->fbcon);
571 drm->fbcon = NULL;
572}
573
