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);
59 MODULE_PARM_DESC(fbcon_bpp, "fbcon bits-per-pixel (default: auto)");
60 static int nouveau_fbcon_bpp;
61 module_param_named(fbcon_bpp, nouveau_fbcon_bpp, int, 0400);
64 nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
66 struct nouveau_fbdev *fbcon = info->par;
67 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
68 struct nvif_device *device = &drm->client.device;
71 if (info->state != FBINFO_STATE_RUNNING)
75 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
76 mutex_trylock(&drm->client.mutex)) {
77 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
78 ret = nv04_fbcon_fillrect(info, rect);
80 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
81 ret = nv50_fbcon_fillrect(info, rect);
83 ret = nvc0_fbcon_fillrect(info, rect);
84 mutex_unlock(&drm->client.mutex);
91 nouveau_fbcon_gpu_lockup(info);
92 drm_fb_helper_cfb_fillrect(info, rect);
96 nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image)
98 struct nouveau_fbdev *fbcon = info->par;
99 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
100 struct nvif_device *device = &drm->client.device;
103 if (info->state != FBINFO_STATE_RUNNING)
107 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
108 mutex_trylock(&drm->client.mutex)) {
109 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
110 ret = nv04_fbcon_copyarea(info, image);
112 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
113 ret = nv50_fbcon_copyarea(info, image);
115 ret = nvc0_fbcon_copyarea(info, image);
116 mutex_unlock(&drm->client.mutex);
123 nouveau_fbcon_gpu_lockup(info);
124 drm_fb_helper_cfb_copyarea(info, image);
128 nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
130 struct nouveau_fbdev *fbcon = info->par;
131 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
132 struct nvif_device *device = &drm->client.device;
135 if (info->state != FBINFO_STATE_RUNNING)
139 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
140 mutex_trylock(&drm->client.mutex)) {
141 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
142 ret = nv04_fbcon_imageblit(info, image);
144 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
145 ret = nv50_fbcon_imageblit(info, image);
147 ret = nvc0_fbcon_imageblit(info, image);
148 mutex_unlock(&drm->client.mutex);
155 nouveau_fbcon_gpu_lockup(info);
156 drm_fb_helper_cfb_imageblit(info, image);
160 nouveau_fbcon_sync(struct fb_info *info)
162 struct nouveau_fbdev *fbcon = info->par;
163 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
164 struct nouveau_channel *chan = drm->channel;
167 if (!chan || !chan->accel_done || in_interrupt() ||
168 info->state != FBINFO_STATE_RUNNING ||
169 info->flags & FBINFO_HWACCEL_DISABLED)
172 if (!mutex_trylock(&drm->client.mutex))
175 ret = nouveau_channel_idle(chan);
176 mutex_unlock(&drm->client.mutex);
178 nouveau_fbcon_gpu_lockup(info);
182 chan->accel_done = false;
187 nouveau_fbcon_open(struct fb_info *info, int user)
189 struct nouveau_fbdev *fbcon = info->par;
190 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
191 int ret = pm_runtime_get_sync(drm->dev->dev);
192 if (ret < 0 && ret != -EACCES) {
193 pm_runtime_put(drm->dev->dev);
200 nouveau_fbcon_release(struct fb_info *info, int user)
202 struct nouveau_fbdev *fbcon = info->par;
203 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
204 pm_runtime_put(drm->dev->dev);
208 static struct fb_ops nouveau_fbcon_ops = {
209 .owner = THIS_MODULE,
210 DRM_FB_HELPER_DEFAULT_OPS,
211 .fb_open = nouveau_fbcon_open,
212 .fb_release = nouveau_fbcon_release,
213 .fb_fillrect = nouveau_fbcon_fillrect,
214 .fb_copyarea = nouveau_fbcon_copyarea,
215 .fb_imageblit = nouveau_fbcon_imageblit,
216 .fb_sync = nouveau_fbcon_sync,
219 static struct fb_ops nouveau_fbcon_sw_ops = {
220 .owner = THIS_MODULE,
221 DRM_FB_HELPER_DEFAULT_OPS,
222 .fb_open = nouveau_fbcon_open,
223 .fb_release = nouveau_fbcon_release,
224 .fb_fillrect = drm_fb_helper_cfb_fillrect,
225 .fb_copyarea = drm_fb_helper_cfb_copyarea,
226 .fb_imageblit = drm_fb_helper_cfb_imageblit,
230 nouveau_fbcon_accel_save_disable(struct drm_device *dev)
232 struct nouveau_drm *drm = nouveau_drm(dev);
233 if (drm->fbcon && drm->fbcon->helper.fbdev) {
234 drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
235 drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
240 nouveau_fbcon_accel_restore(struct drm_device *dev)
242 struct nouveau_drm *drm = nouveau_drm(dev);
243 if (drm->fbcon && drm->fbcon->helper.fbdev) {
244 drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
249 nouveau_fbcon_accel_fini(struct drm_device *dev)
251 struct nouveau_drm *drm = nouveau_drm(dev);
252 struct nouveau_fbdev *fbcon = drm->fbcon;
253 if (fbcon && drm->channel) {
255 if (fbcon->helper.fbdev)
256 fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
258 nouveau_channel_idle(drm->channel);
259 nvif_object_fini(&fbcon->twod);
260 nvif_object_fini(&fbcon->blit);
261 nvif_object_fini(&fbcon->gdi);
262 nvif_object_fini(&fbcon->patt);
263 nvif_object_fini(&fbcon->rop);
264 nvif_object_fini(&fbcon->clip);
265 nvif_object_fini(&fbcon->surf2d);
270 nouveau_fbcon_accel_init(struct drm_device *dev)
272 struct nouveau_drm *drm = nouveau_drm(dev);
273 struct nouveau_fbdev *fbcon = drm->fbcon;
274 struct fb_info *info = fbcon->helper.fbdev;
277 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA)
278 ret = nv04_fbcon_accel_init(info);
280 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI)
281 ret = nv50_fbcon_accel_init(info);
283 ret = nvc0_fbcon_accel_init(info);
286 info->fbops = &nouveau_fbcon_ops;
290 nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
292 struct fb_info *info = fbcon->helper.fbdev;
293 struct fb_fillrect rect;
295 /* Clear the entire fbcon. The drm will program every connector
296 * with it's preferred mode. If the sizes differ, one display will
297 * quite likely have garbage around the console.
299 rect.dx = rect.dy = 0;
300 rect.width = info->var.xres_virtual;
301 rect.height = info->var.yres_virtual;
304 info->fbops->fb_fillrect(info, &rect);
308 nouveau_fbcon_create(struct drm_fb_helper *helper,
309 struct drm_fb_helper_surface_size *sizes)
311 struct nouveau_fbdev *fbcon =
312 container_of(helper, struct nouveau_fbdev, helper);
313 struct drm_device *dev = fbcon->helper.dev;
314 struct nouveau_drm *drm = nouveau_drm(dev);
315 struct nvif_device *device = &drm->client.device;
316 struct fb_info *info;
317 struct nouveau_framebuffer *fb;
318 struct nouveau_channel *chan;
319 struct nouveau_bo *nvbo;
320 struct drm_mode_fb_cmd2 mode_cmd = {};
323 mode_cmd.width = sizes->surface_width;
324 mode_cmd.height = sizes->surface_height;
326 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
327 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
329 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
330 sizes->surface_depth);
332 ret = nouveau_gem_new(&drm->client, mode_cmd.pitches[0] *
333 mode_cmd.height, 0, NOUVEAU_GEM_DOMAIN_VRAM,
336 NV_ERROR(drm, "failed to allocate framebuffer\n");
340 ret = nouveau_framebuffer_new(dev, &mode_cmd, nvbo, &fb);
344 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM, false);
346 NV_ERROR(drm, "failed to pin fb: %d\n", ret);
350 ret = nouveau_bo_map(nvbo);
352 NV_ERROR(drm, "failed to map fb: %d\n", ret);
356 chan = nouveau_nofbaccel ? NULL : drm->channel;
357 if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
358 ret = nouveau_vma_new(nvbo, &drm->client.vmm, &fb->vma);
360 NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
365 info = drm_fb_helper_alloc_fbi(helper);
370 info->skip_vt_switch = 1;
375 fbcon->helper.fb = &fb->base;
377 strcpy(info->fix.id, "nouveaufb");
379 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
381 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
382 FBINFO_HWACCEL_FILLRECT |
383 FBINFO_HWACCEL_IMAGEBLIT;
384 info->flags |= FBINFO_CAN_FORCE_OUTPUT;
385 info->fbops = &nouveau_fbcon_sw_ops;
386 info->fix.smem_start = fb->nvbo->bo.mem.bus.base +
387 fb->nvbo->bo.mem.bus.offset;
388 info->fix.smem_len = fb->nvbo->bo.mem.num_pages << PAGE_SHIFT;
390 info->screen_base = nvbo_kmap_obj_iovirtual(fb->nvbo);
391 info->screen_size = fb->nvbo->bo.mem.num_pages << PAGE_SHIFT;
393 drm_fb_helper_fill_fix(info, fb->base.pitches[0],
394 fb->base.format->depth);
395 drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height);
397 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
400 nouveau_fbcon_accel_init(dev);
401 nouveau_fbcon_zfill(dev, fbcon);
403 /* To allow resizeing without swapping buffers */
404 NV_INFO(drm, "allocated %dx%d fb: 0x%llx, bo %p\n",
405 fb->base.width, fb->base.height, fb->nvbo->bo.offset, nvbo);
407 vga_switcheroo_client_fb_set(dev->pdev, info);
412 nouveau_vma_del(&fb->vma);
413 nouveau_bo_unmap(fb->nvbo);
415 nouveau_bo_unpin(fb->nvbo);
417 nouveau_bo_ref(NULL, &fb->nvbo);
423 nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
425 struct nouveau_framebuffer *nouveau_fb = nouveau_framebuffer(fbcon->helper.fb);
427 drm_fb_helper_unregister_fbi(&fbcon->helper);
428 drm_fb_helper_fini(&fbcon->helper);
430 if (nouveau_fb && nouveau_fb->nvbo) {
431 nouveau_vma_del(&nouveau_fb->vma);
432 nouveau_bo_unmap(nouveau_fb->nvbo);
433 nouveau_bo_unpin(nouveau_fb->nvbo);
434 drm_framebuffer_put(&nouveau_fb->base);
440 void nouveau_fbcon_gpu_lockup(struct fb_info *info)
442 struct nouveau_fbdev *fbcon = info->par;
443 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
445 NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
446 info->flags |= FBINFO_HWACCEL_DISABLED;
449 static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
450 .fb_probe = nouveau_fbcon_create,
454 nouveau_fbcon_set_suspend_work(struct work_struct *work)
456 struct nouveau_drm *drm = container_of(work, typeof(*drm), fbcon_work);
457 int state = READ_ONCE(drm->fbcon_new_state);
459 if (state == FBINFO_STATE_RUNNING)
460 pm_runtime_get_sync(drm->dev->dev);
463 if (state == FBINFO_STATE_RUNNING)
464 nouveau_fbcon_accel_restore(drm->dev);
465 drm_fb_helper_set_suspend(&drm->fbcon->helper, state);
466 if (state != FBINFO_STATE_RUNNING)
467 nouveau_fbcon_accel_save_disable(drm->dev);
470 if (state == FBINFO_STATE_RUNNING) {
471 nouveau_fbcon_hotplug_resume(drm->fbcon);
472 pm_runtime_mark_last_busy(drm->dev->dev);
473 pm_runtime_put_sync(drm->dev->dev);
478 nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
480 struct nouveau_drm *drm = nouveau_drm(dev);
485 drm->fbcon_new_state = state;
486 /* Since runtime resume can happen as a result of a sysfs operation,
487 * it's possible we already have the console locked. So handle fbcon
488 * init/deinit from a seperate work thread
490 schedule_work(&drm->fbcon_work);
494 nouveau_fbcon_output_poll_changed(struct drm_device *dev)
496 struct nouveau_drm *drm = nouveau_drm(dev);
497 struct nouveau_fbdev *fbcon = drm->fbcon;
503 mutex_lock(&fbcon->hotplug_lock);
505 ret = pm_runtime_get(dev->dev);
506 if (ret == 1 || ret == -EACCES) {
507 drm_fb_helper_hotplug_event(&fbcon->helper);
509 pm_runtime_mark_last_busy(dev->dev);
510 pm_runtime_put_autosuspend(dev->dev);
511 } else if (ret == 0) {
512 /* If the GPU was already in the process of suspending before
513 * this event happened, then we can't block here as we'll
514 * deadlock the runtime pmops since they wait for us to
515 * finish. So, just defer this event for when we runtime
516 * resume again. It will be handled by fbcon_work.
518 NV_DEBUG(drm, "fbcon HPD event deferred until runtime resume\n");
519 fbcon->hotplug_waiting = true;
520 pm_runtime_put_noidle(drm->dev->dev);
522 DRM_WARN("fbcon HPD event lost due to RPM failure: %d\n",
526 mutex_unlock(&fbcon->hotplug_lock);
530 nouveau_fbcon_hotplug_resume(struct nouveau_fbdev *fbcon)
532 struct nouveau_drm *drm;
536 drm = nouveau_drm(fbcon->helper.dev);
538 mutex_lock(&fbcon->hotplug_lock);
539 if (fbcon->hotplug_waiting) {
540 fbcon->hotplug_waiting = false;
542 NV_DEBUG(drm, "Handling deferred fbcon HPD events\n");
543 drm_fb_helper_hotplug_event(&fbcon->helper);
545 mutex_unlock(&fbcon->hotplug_lock);
549 nouveau_fbcon_init(struct drm_device *dev)
551 struct nouveau_drm *drm = nouveau_drm(dev);
552 struct nouveau_fbdev *fbcon;
553 int preferred_bpp = nouveau_fbcon_bpp;
556 if (!dev->mode_config.num_crtc ||
557 (dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
560 fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
565 INIT_WORK(&drm->fbcon_work, nouveau_fbcon_set_suspend_work);
566 mutex_init(&fbcon->hotplug_lock);
568 drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);
570 ret = drm_fb_helper_init(dev, &fbcon->helper, 4);
574 ret = drm_fb_helper_single_add_all_connectors(&fbcon->helper);
578 if (preferred_bpp != 8 && preferred_bpp != 16 && preferred_bpp != 32) {
579 if (drm->client.device.info.ram_size <= 32 * 1024 * 1024)
582 if (drm->client.device.info.ram_size <= 64 * 1024 * 1024)
588 /* disable all the possible outputs/crtcs before entering KMS mode */
589 if (!drm_drv_uses_atomic_modeset(dev))
590 drm_helper_disable_unused_functions(dev);
592 ret = drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
596 if (fbcon->helper.fbdev)
597 fbcon->helper.fbdev->pixmap.buf_align = 4;
601 drm_fb_helper_fini(&fbcon->helper);
609 nouveau_fbcon_fini(struct drm_device *dev)
611 struct nouveau_drm *drm = nouveau_drm(dev);
616 nouveau_fbcon_accel_fini(dev);
617 nouveau_fbcon_destroy(dev, drm->fbcon);