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"
51 #include "nouveau_vmm.h"
53 #include "nouveau_crtc.h"
55 MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
56 int nouveau_nofbaccel = 0;
57 module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);
60 nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
62 struct nouveau_fbdev *fbcon = info->par;
63 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
64 struct nvif_device *device = &drm->client.device;
67 if (info->state != FBINFO_STATE_RUNNING)
71 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
72 mutex_trylock(&drm->client.mutex)) {
73 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
74 ret = nv04_fbcon_fillrect(info, rect);
76 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
77 ret = nv50_fbcon_fillrect(info, rect);
79 ret = nvc0_fbcon_fillrect(info, rect);
80 mutex_unlock(&drm->client.mutex);
87 nouveau_fbcon_gpu_lockup(info);
88 drm_fb_helper_cfb_fillrect(info, rect);
92 nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image)
94 struct nouveau_fbdev *fbcon = info->par;
95 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
96 struct nvif_device *device = &drm->client.device;
99 if (info->state != FBINFO_STATE_RUNNING)
103 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
104 mutex_trylock(&drm->client.mutex)) {
105 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
106 ret = nv04_fbcon_copyarea(info, image);
108 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
109 ret = nv50_fbcon_copyarea(info, image);
111 ret = nvc0_fbcon_copyarea(info, image);
112 mutex_unlock(&drm->client.mutex);
119 nouveau_fbcon_gpu_lockup(info);
120 drm_fb_helper_cfb_copyarea(info, image);
124 nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
126 struct nouveau_fbdev *fbcon = info->par;
127 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
128 struct nvif_device *device = &drm->client.device;
131 if (info->state != FBINFO_STATE_RUNNING)
135 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
136 mutex_trylock(&drm->client.mutex)) {
137 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
138 ret = nv04_fbcon_imageblit(info, image);
140 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
141 ret = nv50_fbcon_imageblit(info, image);
143 ret = nvc0_fbcon_imageblit(info, image);
144 mutex_unlock(&drm->client.mutex);
151 nouveau_fbcon_gpu_lockup(info);
152 drm_fb_helper_cfb_imageblit(info, image);
156 nouveau_fbcon_sync(struct fb_info *info)
158 struct nouveau_fbdev *fbcon = info->par;
159 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
160 struct nouveau_channel *chan = drm->channel;
163 if (!chan || !chan->accel_done || in_interrupt() ||
164 info->state != FBINFO_STATE_RUNNING ||
165 info->flags & FBINFO_HWACCEL_DISABLED)
168 if (!mutex_trylock(&drm->client.mutex))
171 ret = nouveau_channel_idle(chan);
172 mutex_unlock(&drm->client.mutex);
174 nouveau_fbcon_gpu_lockup(info);
178 chan->accel_done = false;
183 nouveau_fbcon_open(struct fb_info *info, int user)
185 struct nouveau_fbdev *fbcon = info->par;
186 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
187 int ret = pm_runtime_get_sync(drm->dev->dev);
188 if (ret < 0 && ret != -EACCES)
194 nouveau_fbcon_release(struct fb_info *info, int user)
196 struct nouveau_fbdev *fbcon = info->par;
197 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
198 pm_runtime_put(drm->dev->dev);
202 static struct fb_ops nouveau_fbcon_ops = {
203 .owner = THIS_MODULE,
204 DRM_FB_HELPER_DEFAULT_OPS,
205 .fb_open = nouveau_fbcon_open,
206 .fb_release = nouveau_fbcon_release,
207 .fb_fillrect = nouveau_fbcon_fillrect,
208 .fb_copyarea = nouveau_fbcon_copyarea,
209 .fb_imageblit = nouveau_fbcon_imageblit,
210 .fb_sync = nouveau_fbcon_sync,
213 static struct fb_ops nouveau_fbcon_sw_ops = {
214 .owner = THIS_MODULE,
215 DRM_FB_HELPER_DEFAULT_OPS,
216 .fb_open = nouveau_fbcon_open,
217 .fb_release = nouveau_fbcon_release,
218 .fb_fillrect = drm_fb_helper_cfb_fillrect,
219 .fb_copyarea = drm_fb_helper_cfb_copyarea,
220 .fb_imageblit = drm_fb_helper_cfb_imageblit,
224 nouveau_fbcon_accel_save_disable(struct drm_device *dev)
226 struct nouveau_drm *drm = nouveau_drm(dev);
227 if (drm->fbcon && drm->fbcon->helper.fbdev) {
228 drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
229 drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
234 nouveau_fbcon_accel_restore(struct drm_device *dev)
236 struct nouveau_drm *drm = nouveau_drm(dev);
237 if (drm->fbcon && drm->fbcon->helper.fbdev) {
238 drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
243 nouveau_fbcon_accel_fini(struct drm_device *dev)
245 struct nouveau_drm *drm = nouveau_drm(dev);
246 struct nouveau_fbdev *fbcon = drm->fbcon;
247 if (fbcon && drm->channel) {
249 if (fbcon->helper.fbdev)
250 fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
252 nouveau_channel_idle(drm->channel);
253 nvif_object_fini(&fbcon->twod);
254 nvif_object_fini(&fbcon->blit);
255 nvif_object_fini(&fbcon->gdi);
256 nvif_object_fini(&fbcon->patt);
257 nvif_object_fini(&fbcon->rop);
258 nvif_object_fini(&fbcon->clip);
259 nvif_object_fini(&fbcon->surf2d);
264 nouveau_fbcon_accel_init(struct drm_device *dev)
266 struct nouveau_drm *drm = nouveau_drm(dev);
267 struct nouveau_fbdev *fbcon = drm->fbcon;
268 struct fb_info *info = fbcon->helper.fbdev;
271 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA)
272 ret = nv04_fbcon_accel_init(info);
274 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI)
275 ret = nv50_fbcon_accel_init(info);
277 ret = nvc0_fbcon_accel_init(info);
280 info->fbops = &nouveau_fbcon_ops;
284 nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
286 struct fb_info *info = fbcon->helper.fbdev;
287 struct fb_fillrect rect;
289 /* Clear the entire fbcon. The drm will program every connector
290 * with it's preferred mode. If the sizes differ, one display will
291 * quite likely have garbage around the console.
293 rect.dx = rect.dy = 0;
294 rect.width = info->var.xres_virtual;
295 rect.height = info->var.yres_virtual;
298 info->fbops->fb_fillrect(info, &rect);
302 nouveau_fbcon_create(struct drm_fb_helper *helper,
303 struct drm_fb_helper_surface_size *sizes)
305 struct nouveau_fbdev *fbcon =
306 container_of(helper, struct nouveau_fbdev, helper);
307 struct drm_device *dev = fbcon->helper.dev;
308 struct nouveau_drm *drm = nouveau_drm(dev);
309 struct nvif_device *device = &drm->client.device;
310 struct fb_info *info;
311 struct nouveau_framebuffer *fb;
312 struct nouveau_channel *chan;
313 struct nouveau_bo *nvbo;
314 struct drm_mode_fb_cmd2 mode_cmd;
317 mode_cmd.width = sizes->surface_width;
318 mode_cmd.height = sizes->surface_height;
320 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
321 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
323 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
324 sizes->surface_depth);
326 ret = nouveau_gem_new(&drm->client, mode_cmd.pitches[0] *
327 mode_cmd.height, 0, NOUVEAU_GEM_DOMAIN_VRAM,
330 NV_ERROR(drm, "failed to allocate framebuffer\n");
334 ret = nouveau_framebuffer_new(dev, &mode_cmd, nvbo, &fb);
338 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM, false);
340 NV_ERROR(drm, "failed to pin fb: %d\n", ret);
344 ret = nouveau_bo_map(nvbo);
346 NV_ERROR(drm, "failed to map fb: %d\n", ret);
350 chan = nouveau_nofbaccel ? NULL : drm->channel;
351 if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
352 ret = nouveau_vma_new(nvbo, &drm->client.vmm, &fb->vma);
354 NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
359 info = drm_fb_helper_alloc_fbi(helper);
364 info->skip_vt_switch = 1;
369 fbcon->helper.fb = &fb->base;
371 strcpy(info->fix.id, "nouveaufb");
373 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
375 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
376 FBINFO_HWACCEL_FILLRECT |
377 FBINFO_HWACCEL_IMAGEBLIT;
378 info->flags |= FBINFO_CAN_FORCE_OUTPUT;
379 info->fbops = &nouveau_fbcon_sw_ops;
380 info->fix.smem_start = fb->nvbo->bo.mem.bus.base +
381 fb->nvbo->bo.mem.bus.offset;
382 info->fix.smem_len = fb->nvbo->bo.mem.num_pages << PAGE_SHIFT;
384 info->screen_base = nvbo_kmap_obj_iovirtual(fb->nvbo);
385 info->screen_size = fb->nvbo->bo.mem.num_pages << PAGE_SHIFT;
387 drm_fb_helper_fill_fix(info, fb->base.pitches[0],
388 fb->base.format->depth);
389 drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height);
391 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
394 nouveau_fbcon_accel_init(dev);
395 nouveau_fbcon_zfill(dev, fbcon);
397 /* To allow resizeing without swapping buffers */
398 NV_INFO(drm, "allocated %dx%d fb: 0x%llx, bo %p\n",
399 fb->base.width, fb->base.height, fb->nvbo->bo.offset, nvbo);
401 vga_switcheroo_client_fb_set(dev->pdev, info);
406 nouveau_vma_del(&fb->vma);
407 nouveau_bo_unmap(fb->nvbo);
409 nouveau_bo_unpin(fb->nvbo);
411 nouveau_bo_ref(NULL, &fb->nvbo);
417 nouveau_fbcon_output_poll_changed(struct drm_device *dev)
419 struct nouveau_drm *drm = nouveau_drm(dev);
421 drm_fb_helper_hotplug_event(&drm->fbcon->helper);
425 nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
427 struct nouveau_framebuffer *nouveau_fb = nouveau_framebuffer(fbcon->helper.fb);
429 drm_fb_helper_unregister_fbi(&fbcon->helper);
430 drm_fb_helper_fini(&fbcon->helper);
432 if (nouveau_fb && nouveau_fb->nvbo) {
433 nouveau_vma_del(&nouveau_fb->vma);
434 nouveau_bo_unmap(nouveau_fb->nvbo);
435 nouveau_bo_unpin(nouveau_fb->nvbo);
436 drm_framebuffer_unreference(&nouveau_fb->base);
442 void nouveau_fbcon_gpu_lockup(struct fb_info *info)
444 struct nouveau_fbdev *fbcon = info->par;
445 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
447 NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
448 info->flags |= FBINFO_HWACCEL_DISABLED;
451 static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
452 .fb_probe = nouveau_fbcon_create,
456 nouveau_fbcon_set_suspend_work(struct work_struct *work)
458 struct nouveau_drm *drm = container_of(work, typeof(*drm), fbcon_work);
459 int state = READ_ONCE(drm->fbcon_new_state);
461 if (state == FBINFO_STATE_RUNNING)
462 pm_runtime_get_sync(drm->dev->dev);
465 if (state == FBINFO_STATE_RUNNING)
466 nouveau_fbcon_accel_restore(drm->dev);
467 drm_fb_helper_set_suspend(&drm->fbcon->helper, state);
468 if (state != FBINFO_STATE_RUNNING)
469 nouveau_fbcon_accel_save_disable(drm->dev);
472 if (state == FBINFO_STATE_RUNNING) {
473 pm_runtime_mark_last_busy(drm->dev->dev);
474 pm_runtime_put_sync(drm->dev->dev);
479 nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
481 struct nouveau_drm *drm = nouveau_drm(dev);
486 drm->fbcon_new_state = state;
487 /* Since runtime resume can happen as a result of a sysfs operation,
488 * it's possible we already have the console locked. So handle fbcon
489 * init/deinit from a seperate work thread
491 schedule_work(&drm->fbcon_work);
495 nouveau_fbcon_init(struct drm_device *dev)
497 struct nouveau_drm *drm = nouveau_drm(dev);
498 struct nouveau_fbdev *fbcon;
502 if (!dev->mode_config.num_crtc ||
503 (dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
506 fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
511 INIT_WORK(&drm->fbcon_work, nouveau_fbcon_set_suspend_work);
513 drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);
515 ret = drm_fb_helper_init(dev, &fbcon->helper, 4);
519 ret = drm_fb_helper_single_add_all_connectors(&fbcon->helper);
523 if (drm->client.device.info.ram_size <= 32 * 1024 * 1024)
526 if (drm->client.device.info.ram_size <= 64 * 1024 * 1024)
531 /* disable all the possible outputs/crtcs before entering KMS mode */
532 if (!drm_drv_uses_atomic_modeset(dev))
533 drm_helper_disable_unused_functions(dev);
535 ret = drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
539 if (fbcon->helper.fbdev)
540 fbcon->helper.fbdev->pixmap.buf_align = 4;
544 drm_fb_helper_fini(&fbcon->helper);
551 nouveau_fbcon_fini(struct drm_device *dev)
553 struct nouveau_drm *drm = nouveau_drm(dev);
558 nouveau_fbcon_accel_fini(dev);
559 nouveau_fbcon_destroy(dev, drm->fbcon);