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->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->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->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->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->dev);
185 int ret = pm_runtime_get_sync(drm->dev->dev);
186 if (ret < 0 && ret != -EACCES) {
187 pm_runtime_put(drm->dev->dev);
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->dev);
198 pm_runtime_put(drm->dev->dev);
202 static struct fb_ops nouveau_fbcon_ops = {
203 .owner = THIS_MODULE,
204 .fb_open = nouveau_fbcon_open,
205 .fb_release = nouveau_fbcon_release,
206 .fb_check_var = drm_fb_helper_check_var,
207 .fb_set_par = drm_fb_helper_set_par,
208 .fb_fillrect = nouveau_fbcon_fillrect,
209 .fb_copyarea = nouveau_fbcon_copyarea,
210 .fb_imageblit = nouveau_fbcon_imageblit,
211 .fb_sync = nouveau_fbcon_sync,
212 .fb_pan_display = drm_fb_helper_pan_display,
213 .fb_blank = drm_fb_helper_blank,
214 .fb_setcmap = drm_fb_helper_setcmap,
215 .fb_debug_enter = drm_fb_helper_debug_enter,
216 .fb_debug_leave = drm_fb_helper_debug_leave,
219 static struct fb_ops nouveau_fbcon_sw_ops = {
220 .owner = THIS_MODULE,
221 .fb_open = nouveau_fbcon_open,
222 .fb_release = nouveau_fbcon_release,
223 .fb_check_var = drm_fb_helper_check_var,
224 .fb_set_par = drm_fb_helper_set_par,
225 .fb_fillrect = drm_fb_helper_cfb_fillrect,
226 .fb_copyarea = drm_fb_helper_cfb_copyarea,
227 .fb_imageblit = drm_fb_helper_cfb_imageblit,
228 .fb_pan_display = drm_fb_helper_pan_display,
229 .fb_blank = drm_fb_helper_blank,
230 .fb_setcmap = drm_fb_helper_setcmap,
231 .fb_debug_enter = drm_fb_helper_debug_enter,
232 .fb_debug_leave = drm_fb_helper_debug_leave,
236 nouveau_fbcon_accel_save_disable(struct drm_device *dev)
238 struct nouveau_drm *drm = nouveau_drm(dev);
240 drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
241 drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
246 nouveau_fbcon_accel_restore(struct drm_device *dev)
248 struct nouveau_drm *drm = nouveau_drm(dev);
250 drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
255 nouveau_fbcon_accel_fini(struct drm_device *dev)
257 struct nouveau_drm *drm = nouveau_drm(dev);
258 struct nouveau_fbdev *fbcon = drm->fbcon;
259 if (fbcon && drm->channel) {
261 fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
263 nouveau_channel_idle(drm->channel);
264 nvif_object_fini(&fbcon->twod);
265 nvif_object_fini(&fbcon->blit);
266 nvif_object_fini(&fbcon->gdi);
267 nvif_object_fini(&fbcon->patt);
268 nvif_object_fini(&fbcon->rop);
269 nvif_object_fini(&fbcon->clip);
270 nvif_object_fini(&fbcon->surf2d);
275 nouveau_fbcon_accel_init(struct drm_device *dev)
277 struct nouveau_drm *drm = nouveau_drm(dev);
278 struct nouveau_fbdev *fbcon = drm->fbcon;
279 struct fb_info *info = fbcon->helper.fbdev;
282 if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA)
283 ret = nv04_fbcon_accel_init(info);
285 if (drm->device.info.family < NV_DEVICE_INFO_V0_FERMI)
286 ret = nv50_fbcon_accel_init(info);
288 ret = nvc0_fbcon_accel_init(info);
291 info->fbops = &nouveau_fbcon_ops;
294 static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
297 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
299 nv_crtc->lut.r[regno] = red;
300 nv_crtc->lut.g[regno] = green;
301 nv_crtc->lut.b[regno] = blue;
304 static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
305 u16 *blue, int regno)
307 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
309 *red = nv_crtc->lut.r[regno];
310 *green = nv_crtc->lut.g[regno];
311 *blue = nv_crtc->lut.b[regno];
315 nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
317 struct fb_info *info = fbcon->helper.fbdev;
318 struct fb_fillrect rect;
320 /* Clear the entire fbcon. The drm will program every connector
321 * with it's preferred mode. If the sizes differ, one display will
322 * quite likely have garbage around the console.
324 rect.dx = rect.dy = 0;
325 rect.width = info->var.xres_virtual;
326 rect.height = info->var.yres_virtual;
329 info->fbops->fb_fillrect(info, &rect);
333 nouveau_fbcon_create(struct drm_fb_helper *helper,
334 struct drm_fb_helper_surface_size *sizes)
336 struct nouveau_fbdev *fbcon =
337 container_of(helper, struct nouveau_fbdev, helper);
338 struct drm_device *dev = fbcon->dev;
339 struct nouveau_drm *drm = nouveau_drm(dev);
340 struct nvif_device *device = &drm->device;
341 struct fb_info *info;
342 struct drm_framebuffer *fb;
343 struct nouveau_framebuffer *nouveau_fb;
344 struct nouveau_channel *chan;
345 struct nouveau_bo *nvbo;
346 struct drm_mode_fb_cmd2 mode_cmd;
349 mode_cmd.width = sizes->surface_width;
350 mode_cmd.height = sizes->surface_height;
352 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
353 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
355 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
356 sizes->surface_depth);
358 size = mode_cmd.pitches[0] * mode_cmd.height;
359 size = roundup(size, PAGE_SIZE);
361 ret = nouveau_gem_new(dev, size, 0, NOUVEAU_GEM_DOMAIN_VRAM,
364 NV_ERROR(drm, "failed to allocate framebuffer\n");
368 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM, false);
370 NV_ERROR(drm, "failed to pin fb: %d\n", ret);
374 ret = nouveau_bo_map(nvbo);
376 NV_ERROR(drm, "failed to map fb: %d\n", ret);
380 chan = nouveau_nofbaccel ? NULL : drm->channel;
381 if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
382 ret = nouveau_bo_vma_add(nvbo, drm->client.vm,
383 &fbcon->nouveau_fb.vma);
385 NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
390 info = drm_fb_helper_alloc_fbi(helper);
395 info->skip_vt_switch = 1;
399 nouveau_framebuffer_init(dev, &fbcon->nouveau_fb, &mode_cmd, nvbo);
401 nouveau_fb = &fbcon->nouveau_fb;
402 fb = &nouveau_fb->base;
405 fbcon->helper.fb = fb;
407 strcpy(info->fix.id, "nouveaufb");
409 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
411 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
412 FBINFO_HWACCEL_FILLRECT |
413 FBINFO_HWACCEL_IMAGEBLIT;
414 info->flags |= FBINFO_CAN_FORCE_OUTPUT;
415 info->fbops = &nouveau_fbcon_sw_ops;
416 info->fix.smem_start = nvbo->bo.mem.bus.base +
417 nvbo->bo.mem.bus.offset;
418 info->fix.smem_len = size;
420 info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
421 info->screen_size = size;
423 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
424 drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height);
426 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
429 nouveau_fbcon_accel_init(dev);
430 nouveau_fbcon_zfill(dev, fbcon);
432 /* To allow resizeing without swapping buffers */
433 NV_INFO(drm, "allocated %dx%d fb: 0x%llx, bo %p\n",
434 nouveau_fb->base.width, nouveau_fb->base.height,
435 nvbo->bo.offset, nvbo);
437 vga_switcheroo_client_fb_set(dev->pdev, info);
442 nouveau_bo_vma_del(nvbo, &fbcon->nouveau_fb.vma);
443 nouveau_bo_unmap(nvbo);
445 nouveau_bo_unpin(nvbo);
447 nouveau_bo_ref(NULL, &nvbo);
453 nouveau_fbcon_output_poll_changed(struct drm_device *dev)
455 struct nouveau_drm *drm = nouveau_drm(dev);
457 drm_fb_helper_hotplug_event(&drm->fbcon->helper);
461 nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
463 struct nouveau_framebuffer *nouveau_fb = &fbcon->nouveau_fb;
465 drm_fb_helper_unregister_fbi(&fbcon->helper);
466 drm_fb_helper_release_fbi(&fbcon->helper);
468 if (nouveau_fb->nvbo) {
469 nouveau_bo_unmap(nouveau_fb->nvbo);
470 nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
471 nouveau_bo_unpin(nouveau_fb->nvbo);
472 drm_gem_object_unreference_unlocked(&nouveau_fb->nvbo->gem);
473 nouveau_fb->nvbo = NULL;
475 drm_fb_helper_fini(&fbcon->helper);
476 drm_framebuffer_unregister_private(&nouveau_fb->base);
477 drm_framebuffer_cleanup(&nouveau_fb->base);
481 void nouveau_fbcon_gpu_lockup(struct fb_info *info)
483 struct nouveau_fbdev *fbcon = info->par;
484 struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
486 NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
487 info->flags |= FBINFO_HWACCEL_DISABLED;
490 static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
491 .gamma_set = nouveau_fbcon_gamma_set,
492 .gamma_get = nouveau_fbcon_gamma_get,
493 .fb_probe = nouveau_fbcon_create,
497 nouveau_fbcon_set_suspend_work(struct work_struct *work)
499 struct nouveau_drm *drm = container_of(work, typeof(*drm), fbcon_work);
500 int state = READ_ONCE(drm->fbcon_new_state);
502 if (state == FBINFO_STATE_RUNNING)
503 pm_runtime_get_sync(drm->dev->dev);
506 if (state == FBINFO_STATE_RUNNING)
507 nouveau_fbcon_accel_restore(drm->dev);
508 drm_fb_helper_set_suspend(&drm->fbcon->helper, state);
509 if (state != FBINFO_STATE_RUNNING)
510 nouveau_fbcon_accel_save_disable(drm->dev);
513 if (state == FBINFO_STATE_RUNNING) {
514 pm_runtime_mark_last_busy(drm->dev->dev);
515 pm_runtime_put_sync(drm->dev->dev);
520 nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
522 struct nouveau_drm *drm = nouveau_drm(dev);
527 drm->fbcon_new_state = state;
528 /* Since runtime resume can happen as a result of a sysfs operation,
529 * it's possible we already have the console locked. So handle fbcon
530 * init/deinit from a seperate work thread
532 schedule_work(&drm->fbcon_work);
536 nouveau_fbcon_init(struct drm_device *dev)
538 struct nouveau_drm *drm = nouveau_drm(dev);
539 struct nouveau_fbdev *fbcon;
543 if (!dev->mode_config.num_crtc ||
544 (dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
547 fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
553 INIT_WORK(&drm->fbcon_work, nouveau_fbcon_set_suspend_work);
555 drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);
557 ret = drm_fb_helper_init(dev, &fbcon->helper,
558 dev->mode_config.num_crtc, 4);
562 ret = drm_fb_helper_single_add_all_connectors(&fbcon->helper);
566 if (drm->device.info.ram_size <= 32 * 1024 * 1024)
569 if (drm->device.info.ram_size <= 64 * 1024 * 1024)
574 /* disable all the possible outputs/crtcs before entering KMS mode */
575 drm_helper_disable_unused_functions(dev);
577 ret = drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
581 if (fbcon->helper.fbdev)
582 fbcon->helper.fbdev->pixmap.buf_align = 4;
586 drm_fb_helper_fini(&fbcon->helper);
594 nouveau_fbcon_fini(struct drm_device *dev)
596 struct nouveau_drm *drm = nouveau_drm(dev);
601 nouveau_fbcon_accel_fini(dev);
602 nouveau_fbcon_destroy(dev, drm->fbcon);