2 * Copyright © 2007 David Airlie
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:
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
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.
27 #include <linux/module.h>
28 #include <linux/kernel.h>
29 #include <linux/errno.h>
30 #include <linux/string.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>
41 #include <drm/drm_crtc.h>
42 #include <drm/drm_crtc_helper.h>
43 #include <drm/drm_fb_helper.h>
44 #include <drm/drm_atomic.h>
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"
52 #include "nouveau_crtc.h"
54 MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
55 int nouveau_nofbaccel = 0;
56 module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);
59 nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
61 struct nouveau_fbdev *fbcon = info->par;
62 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
63 struct nvif_device *device = &drm->client.device;
66 if (info->state != FBINFO_STATE_RUNNING)
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);
75 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
76 ret = nv50_fbcon_fillrect(info, rect);
78 ret = nvc0_fbcon_fillrect(info, rect);
79 mutex_unlock(&drm->client.mutex);
86 nouveau_fbcon_gpu_lockup(info);
87 drm_fb_helper_cfb_fillrect(info, rect);
91 nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image)
93 struct nouveau_fbdev *fbcon = info->par;
94 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
95 struct nvif_device *device = &drm->client.device;
98 if (info->state != FBINFO_STATE_RUNNING)
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);
107 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
108 ret = nv50_fbcon_copyarea(info, image);
110 ret = nvc0_fbcon_copyarea(info, image);
111 mutex_unlock(&drm->client.mutex);
118 nouveau_fbcon_gpu_lockup(info);
119 drm_fb_helper_cfb_copyarea(info, image);
123 nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
125 struct nouveau_fbdev *fbcon = info->par;
126 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
127 struct nvif_device *device = &drm->client.device;
130 if (info->state != FBINFO_STATE_RUNNING)
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);
139 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
140 ret = nv50_fbcon_imageblit(info, image);
142 ret = nvc0_fbcon_imageblit(info, image);
143 mutex_unlock(&drm->client.mutex);
150 nouveau_fbcon_gpu_lockup(info);
151 drm_fb_helper_cfb_imageblit(info, image);
155 nouveau_fbcon_sync(struct fb_info *info)
157 struct nouveau_fbdev *fbcon = info->par;
158 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
159 struct nouveau_channel *chan = drm->channel;
162 if (!chan || !chan->accel_done || in_interrupt() ||
163 info->state != FBINFO_STATE_RUNNING ||
164 info->flags & FBINFO_HWACCEL_DISABLED)
167 if (!mutex_trylock(&drm->client.mutex))
170 ret = nouveau_channel_idle(chan);
171 mutex_unlock(&drm->client.mutex);
173 nouveau_fbcon_gpu_lockup(info);
177 chan->accel_done = false;
182 nouveau_fbcon_open(struct fb_info *info, int user)
184 struct nouveau_fbdev *fbcon = info->par;
185 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
186 int ret = pm_runtime_get_sync(drm->dev->dev);
187 if (ret < 0 && ret != -EACCES) {
188 pm_runtime_put(drm->dev->dev);
195 nouveau_fbcon_release(struct fb_info *info, int user)
197 struct nouveau_fbdev *fbcon = info->par;
198 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
199 pm_runtime_put(drm->dev->dev);
203 static struct fb_ops nouveau_fbcon_ops = {
204 .owner = THIS_MODULE,
205 DRM_FB_HELPER_DEFAULT_OPS,
206 .fb_open = nouveau_fbcon_open,
207 .fb_release = nouveau_fbcon_release,
208 .fb_fillrect = nouveau_fbcon_fillrect,
209 .fb_copyarea = nouveau_fbcon_copyarea,
210 .fb_imageblit = nouveau_fbcon_imageblit,
211 .fb_sync = nouveau_fbcon_sync,
214 static struct fb_ops nouveau_fbcon_sw_ops = {
215 .owner = THIS_MODULE,
216 DRM_FB_HELPER_DEFAULT_OPS,
217 .fb_open = nouveau_fbcon_open,
218 .fb_release = nouveau_fbcon_release,
219 .fb_fillrect = drm_fb_helper_cfb_fillrect,
220 .fb_copyarea = drm_fb_helper_cfb_copyarea,
221 .fb_imageblit = drm_fb_helper_cfb_imageblit,
225 nouveau_fbcon_accel_save_disable(struct drm_device *dev)
227 struct nouveau_drm *drm = nouveau_drm(dev);
228 if (drm->fbcon && drm->fbcon->helper.fbdev) {
229 drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
230 drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
235 nouveau_fbcon_accel_restore(struct drm_device *dev)
237 struct nouveau_drm *drm = nouveau_drm(dev);
238 if (drm->fbcon && drm->fbcon->helper.fbdev) {
239 drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
244 nouveau_fbcon_accel_fini(struct drm_device *dev)
246 struct nouveau_drm *drm = nouveau_drm(dev);
247 struct nouveau_fbdev *fbcon = drm->fbcon;
248 if (fbcon && drm->channel) {
250 if (fbcon->helper.fbdev)
251 fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
253 nouveau_channel_idle(drm->channel);
254 nvif_object_fini(&fbcon->twod);
255 nvif_object_fini(&fbcon->blit);
256 nvif_object_fini(&fbcon->gdi);
257 nvif_object_fini(&fbcon->patt);
258 nvif_object_fini(&fbcon->rop);
259 nvif_object_fini(&fbcon->clip);
260 nvif_object_fini(&fbcon->surf2d);
265 nouveau_fbcon_accel_init(struct drm_device *dev)
267 struct nouveau_drm *drm = nouveau_drm(dev);
268 struct nouveau_fbdev *fbcon = drm->fbcon;
269 struct fb_info *info = fbcon->helper.fbdev;
272 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA)
273 ret = nv04_fbcon_accel_init(info);
275 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI)
276 ret = nv50_fbcon_accel_init(info);
278 ret = nvc0_fbcon_accel_init(info);
281 info->fbops = &nouveau_fbcon_ops;
285 nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
287 struct fb_info *info = fbcon->helper.fbdev;
288 struct fb_fillrect rect;
290 /* Clear the entire fbcon. The drm will program every connector
291 * with it's preferred mode. If the sizes differ, one display will
292 * quite likely have garbage around the console.
294 rect.dx = rect.dy = 0;
295 rect.width = info->var.xres_virtual;
296 rect.height = info->var.yres_virtual;
299 info->fbops->fb_fillrect(info, &rect);
303 nouveau_fbcon_create(struct drm_fb_helper *helper,
304 struct drm_fb_helper_surface_size *sizes)
306 struct nouveau_fbdev *fbcon =
307 container_of(helper, struct nouveau_fbdev, helper);
308 struct drm_device *dev = fbcon->helper.dev;
309 struct nouveau_drm *drm = nouveau_drm(dev);
310 struct nvif_device *device = &drm->client.device;
311 struct fb_info *info;
312 struct nouveau_framebuffer *fb;
313 struct nouveau_channel *chan;
314 struct nouveau_bo *nvbo;
315 struct drm_mode_fb_cmd2 mode_cmd = {};
318 mode_cmd.width = sizes->surface_width;
319 mode_cmd.height = sizes->surface_height;
321 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
322 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
324 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
325 sizes->surface_depth);
327 ret = nouveau_gem_new(&drm->client, mode_cmd.pitches[0] *
328 mode_cmd.height, 0, NOUVEAU_GEM_DOMAIN_VRAM,
331 NV_ERROR(drm, "failed to allocate framebuffer\n");
335 ret = nouveau_framebuffer_new(dev, &mode_cmd, nvbo, &fb);
339 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM, false);
341 NV_ERROR(drm, "failed to pin fb: %d\n", ret);
345 ret = nouveau_bo_map(nvbo);
347 NV_ERROR(drm, "failed to map fb: %d\n", ret);
351 chan = nouveau_nofbaccel ? NULL : drm->channel;
352 if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
353 ret = nouveau_bo_vma_add(nvbo, drm->client.vm, &fb->vma);
355 NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
360 info = drm_fb_helper_alloc_fbi(helper);
365 info->skip_vt_switch = 1;
370 fbcon->helper.fb = &fb->base;
372 strcpy(info->fix.id, "nouveaufb");
374 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
376 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
377 FBINFO_HWACCEL_FILLRECT |
378 FBINFO_HWACCEL_IMAGEBLIT;
379 info->flags |= FBINFO_CAN_FORCE_OUTPUT;
380 info->fbops = &nouveau_fbcon_sw_ops;
381 info->fix.smem_start = fb->nvbo->bo.mem.bus.base +
382 fb->nvbo->bo.mem.bus.offset;
383 info->fix.smem_len = fb->nvbo->bo.mem.num_pages << PAGE_SHIFT;
385 info->screen_base = nvbo_kmap_obj_iovirtual(fb->nvbo);
386 info->screen_size = fb->nvbo->bo.mem.num_pages << PAGE_SHIFT;
388 drm_fb_helper_fill_fix(info, fb->base.pitches[0],
389 fb->base.format->depth);
390 drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height);
392 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
395 nouveau_fbcon_accel_init(dev);
396 nouveau_fbcon_zfill(dev, fbcon);
398 /* To allow resizeing without swapping buffers */
399 NV_INFO(drm, "allocated %dx%d fb: 0x%llx, bo %p\n",
400 fb->base.width, fb->base.height, fb->nvbo->bo.offset, nvbo);
402 vga_switcheroo_client_fb_set(dev->pdev, info);
407 nouveau_bo_vma_del(fb->nvbo, &fb->vma);
408 nouveau_bo_unmap(fb->nvbo);
410 nouveau_bo_unpin(fb->nvbo);
412 nouveau_bo_ref(NULL, &fb->nvbo);
418 nouveau_fbcon_output_poll_changed(struct drm_device *dev)
420 struct nouveau_drm *drm = nouveau_drm(dev);
422 drm_fb_helper_hotplug_event(&drm->fbcon->helper);
426 nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
428 struct nouveau_framebuffer *nouveau_fb = nouveau_framebuffer(fbcon->helper.fb);
430 drm_fb_helper_unregister_fbi(&fbcon->helper);
431 drm_fb_helper_fini(&fbcon->helper);
433 if (nouveau_fb->nvbo) {
434 nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
435 nouveau_bo_unmap(nouveau_fb->nvbo);
436 nouveau_bo_unpin(nouveau_fb->nvbo);
437 drm_framebuffer_unreference(&nouveau_fb->base);
443 void nouveau_fbcon_gpu_lockup(struct fb_info *info)
445 struct nouveau_fbdev *fbcon = info->par;
446 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
448 NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
449 info->flags |= FBINFO_HWACCEL_DISABLED;
452 static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
453 .fb_probe = nouveau_fbcon_create,
457 nouveau_fbcon_set_suspend_work(struct work_struct *work)
459 struct nouveau_drm *drm = container_of(work, typeof(*drm), fbcon_work);
460 int state = READ_ONCE(drm->fbcon_new_state);
462 if (state == FBINFO_STATE_RUNNING)
463 pm_runtime_get_sync(drm->dev->dev);
466 if (state == FBINFO_STATE_RUNNING)
467 nouveau_fbcon_accel_restore(drm->dev);
468 drm_fb_helper_set_suspend(&drm->fbcon->helper, state);
469 if (state != FBINFO_STATE_RUNNING)
470 nouveau_fbcon_accel_save_disable(drm->dev);
473 if (state == FBINFO_STATE_RUNNING) {
474 pm_runtime_mark_last_busy(drm->dev->dev);
475 pm_runtime_put_sync(drm->dev->dev);
480 nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
482 struct nouveau_drm *drm = nouveau_drm(dev);
487 drm->fbcon_new_state = state;
488 /* Since runtime resume can happen as a result of a sysfs operation,
489 * it's possible we already have the console locked. So handle fbcon
490 * init/deinit from a seperate work thread
492 schedule_work(&drm->fbcon_work);
496 nouveau_fbcon_init(struct drm_device *dev)
498 struct nouveau_drm *drm = nouveau_drm(dev);
499 struct nouveau_fbdev *fbcon;
503 if (!dev->mode_config.num_crtc ||
504 (dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
507 fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
512 INIT_WORK(&drm->fbcon_work, nouveau_fbcon_set_suspend_work);
514 drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);
516 ret = drm_fb_helper_init(dev, &fbcon->helper, 4);
520 ret = drm_fb_helper_single_add_all_connectors(&fbcon->helper);
524 if (drm->client.device.info.ram_size <= 32 * 1024 * 1024)
527 if (drm->client.device.info.ram_size <= 64 * 1024 * 1024)
532 /* disable all the possible outputs/crtcs before entering KMS mode */
533 if (!drm_drv_uses_atomic_modeset(dev))
534 drm_helper_disable_unused_functions(dev);
536 ret = drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
540 if (fbcon->helper.fbdev)
541 fbcon->helper.fbdev->pixmap.buf_align = 4;
545 drm_fb_helper_fini(&fbcon->helper);
553 nouveau_fbcon_fini(struct drm_device *dev)
555 struct nouveau_drm *drm = nouveau_drm(dev);
560 nouveau_fbcon_accel_fini(dev);
561 nouveau_fbcon_destroy(dev, drm->fbcon);