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>
36 #include <linux/init.h>
37 #include <linux/screen_info.h>
38 #include <linux/vga_switcheroo.h>
39 #include <linux/console.h>
42 #include <drm/drm_crtc.h>
43 #include <drm/drm_crtc_helper.h>
44 #include <drm/drm_fb_helper.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->dev);
63 struct nvif_device *device = &drm->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->dev);
95 struct nvif_device *device = &drm->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->dev);
127 struct nvif_device *device = &drm->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->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->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->dev);
197 pm_runtime_put(drm->dev->dev);
201 static struct fb_ops nouveau_fbcon_ops = {
202 .owner = THIS_MODULE,
203 .fb_open = nouveau_fbcon_open,
204 .fb_release = nouveau_fbcon_release,
205 .fb_check_var = drm_fb_helper_check_var,
206 .fb_set_par = drm_fb_helper_set_par,
207 .fb_fillrect = nouveau_fbcon_fillrect,
208 .fb_copyarea = nouveau_fbcon_copyarea,
209 .fb_imageblit = nouveau_fbcon_imageblit,
210 .fb_sync = nouveau_fbcon_sync,
211 .fb_pan_display = drm_fb_helper_pan_display,
212 .fb_blank = drm_fb_helper_blank,
213 .fb_setcmap = drm_fb_helper_setcmap,
214 .fb_debug_enter = drm_fb_helper_debug_enter,
215 .fb_debug_leave = drm_fb_helper_debug_leave,
218 static struct fb_ops nouveau_fbcon_sw_ops = {
219 .owner = THIS_MODULE,
220 .fb_open = nouveau_fbcon_open,
221 .fb_release = nouveau_fbcon_release,
222 .fb_check_var = drm_fb_helper_check_var,
223 .fb_set_par = drm_fb_helper_set_par,
224 .fb_fillrect = drm_fb_helper_cfb_fillrect,
225 .fb_copyarea = drm_fb_helper_cfb_copyarea,
226 .fb_imageblit = drm_fb_helper_cfb_imageblit,
227 .fb_pan_display = drm_fb_helper_pan_display,
228 .fb_blank = drm_fb_helper_blank,
229 .fb_setcmap = drm_fb_helper_setcmap,
230 .fb_debug_enter = drm_fb_helper_debug_enter,
231 .fb_debug_leave = drm_fb_helper_debug_leave,
235 nouveau_fbcon_accel_save_disable(struct drm_device *dev)
237 struct nouveau_drm *drm = nouveau_drm(dev);
239 drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
240 drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
245 nouveau_fbcon_accel_restore(struct drm_device *dev)
247 struct nouveau_drm *drm = nouveau_drm(dev);
249 drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
254 nouveau_fbcon_accel_fini(struct drm_device *dev)
256 struct nouveau_drm *drm = nouveau_drm(dev);
257 struct nouveau_fbdev *fbcon = drm->fbcon;
258 if (fbcon && drm->channel) {
260 fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
262 nouveau_channel_idle(drm->channel);
263 nvif_object_fini(&fbcon->twod);
264 nvif_object_fini(&fbcon->blit);
265 nvif_object_fini(&fbcon->gdi);
266 nvif_object_fini(&fbcon->patt);
267 nvif_object_fini(&fbcon->rop);
268 nvif_object_fini(&fbcon->clip);
269 nvif_object_fini(&fbcon->surf2d);
274 nouveau_fbcon_accel_init(struct drm_device *dev)
276 struct nouveau_drm *drm = nouveau_drm(dev);
277 struct nouveau_fbdev *fbcon = drm->fbcon;
278 struct fb_info *info = fbcon->helper.fbdev;
281 if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA)
282 ret = nv04_fbcon_accel_init(info);
284 if (drm->device.info.family < NV_DEVICE_INFO_V0_FERMI)
285 ret = nv50_fbcon_accel_init(info);
287 ret = nvc0_fbcon_accel_init(info);
290 info->fbops = &nouveau_fbcon_ops;
293 static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
296 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
298 nv_crtc->lut.r[regno] = red;
299 nv_crtc->lut.g[regno] = green;
300 nv_crtc->lut.b[regno] = blue;
303 static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
304 u16 *blue, int regno)
306 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
308 *red = nv_crtc->lut.r[regno];
309 *green = nv_crtc->lut.g[regno];
310 *blue = nv_crtc->lut.b[regno];
314 nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
316 struct fb_info *info = fbcon->helper.fbdev;
317 struct fb_fillrect rect;
319 /* Clear the entire fbcon. The drm will program every connector
320 * with it's preferred mode. If the sizes differ, one display will
321 * quite likely have garbage around the console.
323 rect.dx = rect.dy = 0;
324 rect.width = info->var.xres_virtual;
325 rect.height = info->var.yres_virtual;
328 info->fbops->fb_fillrect(info, &rect);
332 nouveau_fbcon_create(struct drm_fb_helper *helper,
333 struct drm_fb_helper_surface_size *sizes)
335 struct nouveau_fbdev *fbcon =
336 container_of(helper, struct nouveau_fbdev, helper);
337 struct drm_device *dev = fbcon->dev;
338 struct nouveau_drm *drm = nouveau_drm(dev);
339 struct nvif_device *device = &drm->device;
340 struct fb_info *info;
341 struct drm_framebuffer *fb;
342 struct nouveau_framebuffer *nouveau_fb;
343 struct nouveau_channel *chan;
344 struct nouveau_bo *nvbo;
345 struct drm_mode_fb_cmd2 mode_cmd;
348 mode_cmd.width = sizes->surface_width;
349 mode_cmd.height = sizes->surface_height;
351 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
352 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
354 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
355 sizes->surface_depth);
357 size = mode_cmd.pitches[0] * mode_cmd.height;
358 size = roundup(size, PAGE_SIZE);
360 ret = nouveau_gem_new(dev, size, 0, NOUVEAU_GEM_DOMAIN_VRAM,
363 NV_ERROR(drm, "failed to allocate framebuffer\n");
367 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM, false);
369 NV_ERROR(drm, "failed to pin fb: %d\n", ret);
373 ret = nouveau_bo_map(nvbo);
375 NV_ERROR(drm, "failed to map fb: %d\n", ret);
379 chan = nouveau_nofbaccel ? NULL : drm->channel;
380 if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
381 ret = nouveau_bo_vma_add(nvbo, drm->client.vm,
382 &fbcon->nouveau_fb.vma);
384 NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
389 info = drm_fb_helper_alloc_fbi(helper);
394 info->skip_vt_switch = 1;
398 nouveau_framebuffer_init(dev, &fbcon->nouveau_fb, &mode_cmd, nvbo);
400 nouveau_fb = &fbcon->nouveau_fb;
401 fb = &nouveau_fb->base;
404 fbcon->helper.fb = fb;
406 strcpy(info->fix.id, "nouveaufb");
408 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
410 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
411 FBINFO_HWACCEL_FILLRECT |
412 FBINFO_HWACCEL_IMAGEBLIT;
413 info->flags |= FBINFO_CAN_FORCE_OUTPUT;
414 info->fbops = &nouveau_fbcon_sw_ops;
415 info->fix.smem_start = nvbo->bo.mem.bus.base +
416 nvbo->bo.mem.bus.offset;
417 info->fix.smem_len = size;
419 info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
420 info->screen_size = size;
422 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
423 drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height);
425 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
428 nouveau_fbcon_accel_init(dev);
429 nouveau_fbcon_zfill(dev, fbcon);
431 /* To allow resizeing without swapping buffers */
432 NV_INFO(drm, "allocated %dx%d fb: 0x%llx, bo %p\n",
433 nouveau_fb->base.width, nouveau_fb->base.height,
434 nvbo->bo.offset, nvbo);
436 vga_switcheroo_client_fb_set(dev->pdev, info);
441 nouveau_bo_vma_del(nvbo, &fbcon->nouveau_fb.vma);
442 nouveau_bo_unmap(nvbo);
444 nouveau_bo_unpin(nvbo);
446 nouveau_bo_ref(NULL, &nvbo);
452 nouveau_fbcon_output_poll_changed(struct drm_device *dev)
454 struct nouveau_drm *drm = nouveau_drm(dev);
456 drm_fb_helper_hotplug_event(&drm->fbcon->helper);
460 nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
462 struct nouveau_framebuffer *nouveau_fb = &fbcon->nouveau_fb;
464 drm_fb_helper_unregister_fbi(&fbcon->helper);
465 drm_fb_helper_release_fbi(&fbcon->helper);
467 if (nouveau_fb->nvbo) {
468 nouveau_bo_unmap(nouveau_fb->nvbo);
469 nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
470 nouveau_bo_unpin(nouveau_fb->nvbo);
471 drm_gem_object_unreference_unlocked(&nouveau_fb->nvbo->gem);
472 nouveau_fb->nvbo = NULL;
474 drm_fb_helper_fini(&fbcon->helper);
475 drm_framebuffer_unregister_private(&nouveau_fb->base);
476 drm_framebuffer_cleanup(&nouveau_fb->base);
480 void nouveau_fbcon_gpu_lockup(struct fb_info *info)
482 struct nouveau_fbdev *fbcon = info->par;
483 struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
485 NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
486 info->flags |= FBINFO_HWACCEL_DISABLED;
489 static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
490 .gamma_set = nouveau_fbcon_gamma_set,
491 .gamma_get = nouveau_fbcon_gamma_get,
492 .fb_probe = nouveau_fbcon_create,
496 nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
498 struct nouveau_drm *drm = nouveau_drm(dev);
501 if (state == FBINFO_STATE_RUNNING)
502 nouveau_fbcon_accel_restore(dev);
503 drm_fb_helper_set_suspend(&drm->fbcon->helper, state);
504 if (state != FBINFO_STATE_RUNNING)
505 nouveau_fbcon_accel_save_disable(dev);
511 nouveau_fbcon_init(struct drm_device *dev)
513 struct nouveau_drm *drm = nouveau_drm(dev);
514 struct nouveau_fbdev *fbcon;
518 if (!dev->mode_config.num_crtc ||
519 (dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
522 fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
529 drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);
531 ret = drm_fb_helper_init(dev, &fbcon->helper,
532 dev->mode_config.num_crtc, 4);
536 ret = drm_fb_helper_single_add_all_connectors(&fbcon->helper);
540 if (drm->device.info.ram_size <= 32 * 1024 * 1024)
543 if (drm->device.info.ram_size <= 64 * 1024 * 1024)
548 /* disable all the possible outputs/crtcs before entering KMS mode */
549 drm_helper_disable_unused_functions(dev);
551 ret = drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
555 if (fbcon->helper.fbdev)
556 fbcon->helper.fbdev->pixmap.buf_align = 4;
560 drm_fb_helper_fini(&fbcon->helper);
567 nouveau_fbcon_fini(struct drm_device *dev)
569 struct nouveau_drm *drm = nouveau_drm(dev);
574 nouveau_fbcon_accel_fini(dev);
575 nouveau_fbcon_destroy(dev, drm->fbcon);