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)
193 nouveau_fbcon_release(struct fb_info *info, int user)
195 struct nouveau_fbdev *fbcon = info->par;
196 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
197 pm_runtime_put(drm->dev->dev);
201 static struct fb_ops nouveau_fbcon_ops = {
202 .owner = THIS_MODULE,
203 DRM_FB_HELPER_DEFAULT_OPS,
204 .fb_open = nouveau_fbcon_open,
205 .fb_release = nouveau_fbcon_release,
206 .fb_fillrect = nouveau_fbcon_fillrect,
207 .fb_copyarea = nouveau_fbcon_copyarea,
208 .fb_imageblit = nouveau_fbcon_imageblit,
209 .fb_sync = nouveau_fbcon_sync,
212 static struct fb_ops nouveau_fbcon_sw_ops = {
213 .owner = THIS_MODULE,
214 DRM_FB_HELPER_DEFAULT_OPS,
215 .fb_open = nouveau_fbcon_open,
216 .fb_release = nouveau_fbcon_release,
217 .fb_fillrect = drm_fb_helper_cfb_fillrect,
218 .fb_copyarea = drm_fb_helper_cfb_copyarea,
219 .fb_imageblit = drm_fb_helper_cfb_imageblit,
223 nouveau_fbcon_accel_save_disable(struct drm_device *dev)
225 struct nouveau_drm *drm = nouveau_drm(dev);
227 drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
228 drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
233 nouveau_fbcon_accel_restore(struct drm_device *dev)
235 struct nouveau_drm *drm = nouveau_drm(dev);
237 drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
242 nouveau_fbcon_accel_fini(struct drm_device *dev)
244 struct nouveau_drm *drm = nouveau_drm(dev);
245 struct nouveau_fbdev *fbcon = drm->fbcon;
246 if (fbcon && drm->channel) {
248 fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
250 nouveau_channel_idle(drm->channel);
251 nvif_object_fini(&fbcon->twod);
252 nvif_object_fini(&fbcon->blit);
253 nvif_object_fini(&fbcon->gdi);
254 nvif_object_fini(&fbcon->patt);
255 nvif_object_fini(&fbcon->rop);
256 nvif_object_fini(&fbcon->clip);
257 nvif_object_fini(&fbcon->surf2d);
262 nouveau_fbcon_accel_init(struct drm_device *dev)
264 struct nouveau_drm *drm = nouveau_drm(dev);
265 struct nouveau_fbdev *fbcon = drm->fbcon;
266 struct fb_info *info = fbcon->helper.fbdev;
269 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA)
270 ret = nv04_fbcon_accel_init(info);
272 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI)
273 ret = nv50_fbcon_accel_init(info);
275 ret = nvc0_fbcon_accel_init(info);
278 info->fbops = &nouveau_fbcon_ops;
281 static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
284 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
286 nv_crtc->lut.r[regno] = red;
287 nv_crtc->lut.g[regno] = green;
288 nv_crtc->lut.b[regno] = blue;
291 static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
292 u16 *blue, int regno)
294 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
296 *red = nv_crtc->lut.r[regno];
297 *green = nv_crtc->lut.g[regno];
298 *blue = nv_crtc->lut.b[regno];
302 nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
304 struct fb_info *info = fbcon->helper.fbdev;
305 struct fb_fillrect rect;
307 /* Clear the entire fbcon. The drm will program every connector
308 * with it's preferred mode. If the sizes differ, one display will
309 * quite likely have garbage around the console.
311 rect.dx = rect.dy = 0;
312 rect.width = info->var.xres_virtual;
313 rect.height = info->var.yres_virtual;
316 info->fbops->fb_fillrect(info, &rect);
320 nouveau_fbcon_create(struct drm_fb_helper *helper,
321 struct drm_fb_helper_surface_size *sizes)
323 struct nouveau_fbdev *fbcon =
324 container_of(helper, struct nouveau_fbdev, helper);
325 struct drm_device *dev = fbcon->helper.dev;
326 struct nouveau_drm *drm = nouveau_drm(dev);
327 struct nvif_device *device = &drm->client.device;
328 struct fb_info *info;
329 struct nouveau_framebuffer *fb;
330 struct nouveau_channel *chan;
331 struct nouveau_bo *nvbo;
332 struct drm_mode_fb_cmd2 mode_cmd;
335 mode_cmd.width = sizes->surface_width;
336 mode_cmd.height = sizes->surface_height;
338 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
339 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
341 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
342 sizes->surface_depth);
344 ret = nouveau_gem_new(&drm->client, mode_cmd.pitches[0] *
345 mode_cmd.height, 0, NOUVEAU_GEM_DOMAIN_VRAM,
348 NV_ERROR(drm, "failed to allocate framebuffer\n");
352 ret = nouveau_framebuffer_new(dev, &mode_cmd, nvbo, &fb);
356 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM, false);
358 NV_ERROR(drm, "failed to pin fb: %d\n", ret);
362 ret = nouveau_bo_map(nvbo);
364 NV_ERROR(drm, "failed to map fb: %d\n", ret);
368 chan = nouveau_nofbaccel ? NULL : drm->channel;
369 if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
370 ret = nouveau_bo_vma_add(nvbo, drm->client.vm, &fb->vma);
372 NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
377 info = drm_fb_helper_alloc_fbi(helper);
382 info->skip_vt_switch = 1;
387 fbcon->helper.fb = &fb->base;
389 strcpy(info->fix.id, "nouveaufb");
391 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
393 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
394 FBINFO_HWACCEL_FILLRECT |
395 FBINFO_HWACCEL_IMAGEBLIT;
396 info->flags |= FBINFO_CAN_FORCE_OUTPUT;
397 info->fbops = &nouveau_fbcon_sw_ops;
398 info->fix.smem_start = fb->nvbo->bo.mem.bus.base +
399 fb->nvbo->bo.mem.bus.offset;
400 info->fix.smem_len = fb->nvbo->bo.mem.num_pages << PAGE_SHIFT;
402 info->screen_base = nvbo_kmap_obj_iovirtual(fb->nvbo);
403 info->screen_size = fb->nvbo->bo.mem.num_pages << PAGE_SHIFT;
405 drm_fb_helper_fill_fix(info, fb->base.pitches[0],
406 fb->base.format->depth);
407 drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height);
409 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
412 nouveau_fbcon_accel_init(dev);
413 nouveau_fbcon_zfill(dev, fbcon);
415 /* To allow resizeing without swapping buffers */
416 NV_INFO(drm, "allocated %dx%d fb: 0x%llx, bo %p\n",
417 fb->base.width, fb->base.height, fb->nvbo->bo.offset, nvbo);
419 vga_switcheroo_client_fb_set(dev->pdev, info);
424 nouveau_bo_vma_del(fb->nvbo, &fb->vma);
425 nouveau_bo_unmap(fb->nvbo);
427 nouveau_bo_unpin(fb->nvbo);
429 nouveau_bo_ref(NULL, &fb->nvbo);
435 nouveau_fbcon_output_poll_changed(struct drm_device *dev)
437 struct nouveau_drm *drm = nouveau_drm(dev);
439 drm_fb_helper_hotplug_event(&drm->fbcon->helper);
443 nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
445 struct nouveau_framebuffer *nouveau_fb = nouveau_framebuffer(fbcon->helper.fb);
447 drm_fb_helper_unregister_fbi(&fbcon->helper);
448 drm_fb_helper_release_fbi(&fbcon->helper);
449 drm_fb_helper_fini(&fbcon->helper);
451 if (nouveau_fb->nvbo) {
452 nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
453 nouveau_bo_unmap(nouveau_fb->nvbo);
454 nouveau_bo_unpin(nouveau_fb->nvbo);
455 drm_framebuffer_unreference(&nouveau_fb->base);
461 void nouveau_fbcon_gpu_lockup(struct fb_info *info)
463 struct nouveau_fbdev *fbcon = info->par;
464 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
466 NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
467 info->flags |= FBINFO_HWACCEL_DISABLED;
470 static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
471 .gamma_set = nouveau_fbcon_gamma_set,
472 .gamma_get = nouveau_fbcon_gamma_get,
473 .fb_probe = nouveau_fbcon_create,
477 nouveau_fbcon_set_suspend_work(struct work_struct *work)
479 struct nouveau_drm *drm = container_of(work, typeof(*drm), fbcon_work);
480 int state = READ_ONCE(drm->fbcon_new_state);
482 if (state == FBINFO_STATE_RUNNING)
483 pm_runtime_get_sync(drm->dev->dev);
486 if (state == FBINFO_STATE_RUNNING)
487 nouveau_fbcon_accel_restore(drm->dev);
488 drm_fb_helper_set_suspend(&drm->fbcon->helper, state);
489 if (state != FBINFO_STATE_RUNNING)
490 nouveau_fbcon_accel_save_disable(drm->dev);
493 if (state == FBINFO_STATE_RUNNING) {
494 pm_runtime_mark_last_busy(drm->dev->dev);
495 pm_runtime_put_sync(drm->dev->dev);
500 nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
502 struct nouveau_drm *drm = nouveau_drm(dev);
507 drm->fbcon_new_state = state;
508 /* Since runtime resume can happen as a result of a sysfs operation,
509 * it's possible we already have the console locked. So handle fbcon
510 * init/deinit from a seperate work thread
512 schedule_work(&drm->fbcon_work);
516 nouveau_fbcon_init(struct drm_device *dev)
518 struct nouveau_drm *drm = nouveau_drm(dev);
519 struct nouveau_fbdev *fbcon;
523 if (!dev->mode_config.num_crtc ||
524 (dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
527 fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
532 INIT_WORK(&drm->fbcon_work, nouveau_fbcon_set_suspend_work);
534 drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);
536 ret = drm_fb_helper_init(dev, &fbcon->helper, 4);
540 ret = drm_fb_helper_single_add_all_connectors(&fbcon->helper);
544 if (drm->client.device.info.ram_size <= 32 * 1024 * 1024)
547 if (drm->client.device.info.ram_size <= 64 * 1024 * 1024)
552 /* disable all the possible outputs/crtcs before entering KMS mode */
553 if (!drm_drv_uses_atomic_modeset(dev))
554 drm_helper_disable_unused_functions(dev);
556 ret = drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
560 if (fbcon->helper.fbdev)
561 fbcon->helper.fbdev->pixmap.buf_align = 4;
565 drm_fb_helper_fini(&fbcon->helper);
572 nouveau_fbcon_fini(struct drm_device *dev)
574 struct nouveau_drm *drm = nouveau_drm(dev);
579 nouveau_fbcon_accel_fini(dev);
580 nouveau_fbcon_destroy(dev, drm->fbcon);