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>
45 #include "nouveau_drv.h"
46 #include "nouveau_gem.h"
47 #include "nouveau_bo.h"
48 #include "nouveau_fbcon.h"
49 #include "nouveau_chan.h"
51 #include "nouveau_crtc.h"
53 MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
54 int nouveau_nofbaccel = 0;
55 module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);
58 nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
60 struct nouveau_fbdev *fbcon = info->par;
61 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
62 struct nvif_device *device = &drm->device;
65 if (info->state != FBINFO_STATE_RUNNING)
69 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
70 mutex_trylock(&drm->client.mutex)) {
71 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
72 ret = nv04_fbcon_fillrect(info, rect);
74 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
75 ret = nv50_fbcon_fillrect(info, rect);
77 ret = nvc0_fbcon_fillrect(info, rect);
78 mutex_unlock(&drm->client.mutex);
85 nouveau_fbcon_gpu_lockup(info);
86 drm_fb_helper_cfb_fillrect(info, rect);
90 nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image)
92 struct nouveau_fbdev *fbcon = info->par;
93 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
94 struct nvif_device *device = &drm->device;
97 if (info->state != FBINFO_STATE_RUNNING)
101 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
102 mutex_trylock(&drm->client.mutex)) {
103 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
104 ret = nv04_fbcon_copyarea(info, image);
106 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
107 ret = nv50_fbcon_copyarea(info, image);
109 ret = nvc0_fbcon_copyarea(info, image);
110 mutex_unlock(&drm->client.mutex);
117 nouveau_fbcon_gpu_lockup(info);
118 drm_fb_helper_cfb_copyarea(info, image);
122 nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
124 struct nouveau_fbdev *fbcon = info->par;
125 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
126 struct nvif_device *device = &drm->device;
129 if (info->state != FBINFO_STATE_RUNNING)
133 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
134 mutex_trylock(&drm->client.mutex)) {
135 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
136 ret = nv04_fbcon_imageblit(info, image);
138 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
139 ret = nv50_fbcon_imageblit(info, image);
141 ret = nvc0_fbcon_imageblit(info, image);
142 mutex_unlock(&drm->client.mutex);
149 nouveau_fbcon_gpu_lockup(info);
150 drm_fb_helper_cfb_imageblit(info, image);
154 nouveau_fbcon_sync(struct fb_info *info)
156 struct nouveau_fbdev *fbcon = info->par;
157 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
158 struct nouveau_channel *chan = drm->channel;
161 if (!chan || !chan->accel_done || in_interrupt() ||
162 info->state != FBINFO_STATE_RUNNING ||
163 info->flags & FBINFO_HWACCEL_DISABLED)
166 if (!mutex_trylock(&drm->client.mutex))
169 ret = nouveau_channel_idle(chan);
170 mutex_unlock(&drm->client.mutex);
172 nouveau_fbcon_gpu_lockup(info);
176 chan->accel_done = false;
181 nouveau_fbcon_open(struct fb_info *info, int user)
183 struct nouveau_fbdev *fbcon = info->par;
184 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
185 int ret = pm_runtime_get_sync(drm->dev->dev);
186 if (ret < 0 && ret != -EACCES)
192 nouveau_fbcon_release(struct fb_info *info, int user)
194 struct nouveau_fbdev *fbcon = info->par;
195 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
196 pm_runtime_put(drm->dev->dev);
200 static struct fb_ops nouveau_fbcon_ops = {
201 .owner = THIS_MODULE,
202 DRM_FB_HELPER_DEFAULT_OPS,
203 .fb_open = nouveau_fbcon_open,
204 .fb_release = nouveau_fbcon_release,
205 .fb_fillrect = nouveau_fbcon_fillrect,
206 .fb_copyarea = nouveau_fbcon_copyarea,
207 .fb_imageblit = nouveau_fbcon_imageblit,
208 .fb_sync = nouveau_fbcon_sync,
211 static struct fb_ops nouveau_fbcon_sw_ops = {
212 .owner = THIS_MODULE,
213 DRM_FB_HELPER_DEFAULT_OPS,
214 .fb_open = nouveau_fbcon_open,
215 .fb_release = nouveau_fbcon_release,
216 .fb_fillrect = drm_fb_helper_cfb_fillrect,
217 .fb_copyarea = drm_fb_helper_cfb_copyarea,
218 .fb_imageblit = drm_fb_helper_cfb_imageblit,
222 nouveau_fbcon_accel_save_disable(struct drm_device *dev)
224 struct nouveau_drm *drm = nouveau_drm(dev);
226 drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
227 drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
232 nouveau_fbcon_accel_restore(struct drm_device *dev)
234 struct nouveau_drm *drm = nouveau_drm(dev);
236 drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
241 nouveau_fbcon_accel_fini(struct drm_device *dev)
243 struct nouveau_drm *drm = nouveau_drm(dev);
244 struct nouveau_fbdev *fbcon = drm->fbcon;
245 if (fbcon && drm->channel) {
247 fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
249 nouveau_channel_idle(drm->channel);
250 nvif_object_fini(&fbcon->twod);
251 nvif_object_fini(&fbcon->blit);
252 nvif_object_fini(&fbcon->gdi);
253 nvif_object_fini(&fbcon->patt);
254 nvif_object_fini(&fbcon->rop);
255 nvif_object_fini(&fbcon->clip);
256 nvif_object_fini(&fbcon->surf2d);
261 nouveau_fbcon_accel_init(struct drm_device *dev)
263 struct nouveau_drm *drm = nouveau_drm(dev);
264 struct nouveau_fbdev *fbcon = drm->fbcon;
265 struct fb_info *info = fbcon->helper.fbdev;
268 if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA)
269 ret = nv04_fbcon_accel_init(info);
271 if (drm->device.info.family < NV_DEVICE_INFO_V0_FERMI)
272 ret = nv50_fbcon_accel_init(info);
274 ret = nvc0_fbcon_accel_init(info);
277 info->fbops = &nouveau_fbcon_ops;
280 static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
283 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
285 nv_crtc->lut.r[regno] = red;
286 nv_crtc->lut.g[regno] = green;
287 nv_crtc->lut.b[regno] = blue;
290 static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
291 u16 *blue, int regno)
293 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
295 *red = nv_crtc->lut.r[regno];
296 *green = nv_crtc->lut.g[regno];
297 *blue = nv_crtc->lut.b[regno];
301 nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
303 struct fb_info *info = fbcon->helper.fbdev;
304 struct fb_fillrect rect;
306 /* Clear the entire fbcon. The drm will program every connector
307 * with it's preferred mode. If the sizes differ, one display will
308 * quite likely have garbage around the console.
310 rect.dx = rect.dy = 0;
311 rect.width = info->var.xres_virtual;
312 rect.height = info->var.yres_virtual;
315 info->fbops->fb_fillrect(info, &rect);
319 nouveau_fbcon_create(struct drm_fb_helper *helper,
320 struct drm_fb_helper_surface_size *sizes)
322 struct nouveau_fbdev *fbcon =
323 container_of(helper, struct nouveau_fbdev, helper);
324 struct drm_device *dev = fbcon->helper.dev;
325 struct nouveau_drm *drm = nouveau_drm(dev);
326 struct nvif_device *device = &drm->device;
327 struct fb_info *info;
328 struct nouveau_framebuffer *fb;
329 struct nouveau_channel *chan;
330 struct nouveau_bo *nvbo;
331 struct drm_mode_fb_cmd2 mode_cmd;
334 mode_cmd.width = sizes->surface_width;
335 mode_cmd.height = sizes->surface_height;
337 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
338 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
340 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
341 sizes->surface_depth);
343 ret = nouveau_gem_new(dev, mode_cmd.pitches[0] * mode_cmd.height,
344 0, NOUVEAU_GEM_DOMAIN_VRAM, 0, 0x0000, &nvbo);
346 NV_ERROR(drm, "failed to allocate framebuffer\n");
350 ret = nouveau_framebuffer_new(dev, &mode_cmd, nvbo, &fb);
354 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM, false);
356 NV_ERROR(drm, "failed to pin fb: %d\n", ret);
360 ret = nouveau_bo_map(nvbo);
362 NV_ERROR(drm, "failed to map fb: %d\n", ret);
366 chan = nouveau_nofbaccel ? NULL : drm->channel;
367 if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
368 ret = nouveau_bo_vma_add(nvbo, drm->client.vm, &fb->vma);
370 NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
375 info = drm_fb_helper_alloc_fbi(helper);
380 info->skip_vt_switch = 1;
385 fbcon->helper.fb = &fb->base;
387 strcpy(info->fix.id, "nouveaufb");
389 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
391 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
392 FBINFO_HWACCEL_FILLRECT |
393 FBINFO_HWACCEL_IMAGEBLIT;
394 info->flags |= FBINFO_CAN_FORCE_OUTPUT;
395 info->fbops = &nouveau_fbcon_sw_ops;
396 info->fix.smem_start = fb->nvbo->bo.mem.bus.base +
397 fb->nvbo->bo.mem.bus.offset;
398 info->fix.smem_len = fb->nvbo->bo.mem.num_pages << PAGE_SHIFT;
400 info->screen_base = nvbo_kmap_obj_iovirtual(fb->nvbo);
401 info->screen_size = fb->nvbo->bo.mem.num_pages << PAGE_SHIFT;
403 drm_fb_helper_fill_fix(info, fb->base.pitches[0], fb->base.depth);
404 drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height);
406 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
409 nouveau_fbcon_accel_init(dev);
410 nouveau_fbcon_zfill(dev, fbcon);
412 /* To allow resizeing without swapping buffers */
413 NV_INFO(drm, "allocated %dx%d fb: 0x%llx, bo %p\n",
414 fb->base.width, fb->base.height, fb->nvbo->bo.offset, nvbo);
416 vga_switcheroo_client_fb_set(dev->pdev, info);
421 nouveau_bo_vma_del(fb->nvbo, &fb->vma);
422 nouveau_bo_unmap(fb->nvbo);
424 nouveau_bo_unpin(fb->nvbo);
426 nouveau_bo_ref(NULL, &fb->nvbo);
432 nouveau_fbcon_output_poll_changed(struct drm_device *dev)
434 struct nouveau_drm *drm = nouveau_drm(dev);
436 drm_fb_helper_hotplug_event(&drm->fbcon->helper);
440 nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
442 struct nouveau_framebuffer *nouveau_fb = nouveau_framebuffer(fbcon->helper.fb);
444 drm_fb_helper_unregister_fbi(&fbcon->helper);
445 drm_fb_helper_release_fbi(&fbcon->helper);
446 drm_fb_helper_fini(&fbcon->helper);
448 if (nouveau_fb->nvbo) {
449 nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
450 nouveau_bo_unmap(nouveau_fb->nvbo);
451 nouveau_bo_unpin(nouveau_fb->nvbo);
452 drm_framebuffer_unreference(&nouveau_fb->base);
458 void nouveau_fbcon_gpu_lockup(struct fb_info *info)
460 struct nouveau_fbdev *fbcon = info->par;
461 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
463 NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
464 info->flags |= FBINFO_HWACCEL_DISABLED;
467 static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
468 .gamma_set = nouveau_fbcon_gamma_set,
469 .gamma_get = nouveau_fbcon_gamma_get,
470 .fb_probe = nouveau_fbcon_create,
474 nouveau_fbcon_set_suspend_work(struct work_struct *work)
476 struct nouveau_drm *drm = container_of(work, typeof(*drm), fbcon_work);
477 int state = READ_ONCE(drm->fbcon_new_state);
479 if (state == FBINFO_STATE_RUNNING)
480 pm_runtime_get_sync(drm->dev->dev);
483 if (state == FBINFO_STATE_RUNNING)
484 nouveau_fbcon_accel_restore(drm->dev);
485 drm_fb_helper_set_suspend(&drm->fbcon->helper, state);
486 if (state != FBINFO_STATE_RUNNING)
487 nouveau_fbcon_accel_save_disable(drm->dev);
490 if (state == FBINFO_STATE_RUNNING) {
491 pm_runtime_mark_last_busy(drm->dev->dev);
492 pm_runtime_put_sync(drm->dev->dev);
497 nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
499 struct nouveau_drm *drm = nouveau_drm(dev);
504 drm->fbcon_new_state = state;
505 /* Since runtime resume can happen as a result of a sysfs operation,
506 * it's possible we already have the console locked. So handle fbcon
507 * init/deinit from a seperate work thread
509 schedule_work(&drm->fbcon_work);
513 nouveau_fbcon_init(struct drm_device *dev)
515 struct nouveau_drm *drm = nouveau_drm(dev);
516 struct nouveau_fbdev *fbcon;
520 if (!dev->mode_config.num_crtc ||
521 (dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
524 fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
529 INIT_WORK(&drm->fbcon_work, nouveau_fbcon_set_suspend_work);
531 drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);
533 ret = drm_fb_helper_init(dev, &fbcon->helper,
534 dev->mode_config.num_crtc, 4);
538 ret = drm_fb_helper_single_add_all_connectors(&fbcon->helper);
542 if (drm->device.info.ram_size <= 32 * 1024 * 1024)
545 if (drm->device.info.ram_size <= 64 * 1024 * 1024)
550 /* disable all the possible outputs/crtcs before entering KMS mode */
551 if (!dev->mode_config.funcs->atomic_commit)
552 drm_helper_disable_unused_functions(dev);
554 ret = drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
558 if (fbcon->helper.fbdev)
559 fbcon->helper.fbdev->pixmap.buf_align = 4;
563 drm_fb_helper_fini(&fbcon->helper);
570 nouveau_fbcon_fini(struct drm_device *dev)
572 struct nouveau_drm *drm = nouveau_drm(dev);
577 nouveau_fbcon_accel_fini(dev);
578 nouveau_fbcon_destroy(dev, drm->fbcon);