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_drm.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 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 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 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;
181 static struct fb_ops nouveau_fbcon_ops = {
182 .owner = THIS_MODULE,
183 .fb_check_var = drm_fb_helper_check_var,
184 .fb_set_par = drm_fb_helper_set_par,
185 .fb_fillrect = nouveau_fbcon_fillrect,
186 .fb_copyarea = nouveau_fbcon_copyarea,
187 .fb_imageblit = nouveau_fbcon_imageblit,
188 .fb_sync = nouveau_fbcon_sync,
189 .fb_pan_display = drm_fb_helper_pan_display,
190 .fb_blank = drm_fb_helper_blank,
191 .fb_setcmap = drm_fb_helper_setcmap,
192 .fb_debug_enter = drm_fb_helper_debug_enter,
193 .fb_debug_leave = drm_fb_helper_debug_leave,
196 static struct fb_ops nouveau_fbcon_sw_ops = {
197 .owner = THIS_MODULE,
198 .fb_check_var = drm_fb_helper_check_var,
199 .fb_set_par = drm_fb_helper_set_par,
200 .fb_fillrect = cfb_fillrect,
201 .fb_copyarea = cfb_copyarea,
202 .fb_imageblit = cfb_imageblit,
203 .fb_pan_display = drm_fb_helper_pan_display,
204 .fb_blank = drm_fb_helper_blank,
205 .fb_setcmap = drm_fb_helper_setcmap,
206 .fb_debug_enter = drm_fb_helper_debug_enter,
207 .fb_debug_leave = drm_fb_helper_debug_leave,
211 nouveau_fbcon_accel_save_disable(struct drm_device *dev)
213 struct nouveau_drm *drm = nouveau_drm(dev);
215 drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
216 drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
221 nouveau_fbcon_accel_restore(struct drm_device *dev)
223 struct nouveau_drm *drm = nouveau_drm(dev);
225 drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
230 nouveau_fbcon_accel_fini(struct drm_device *dev)
232 struct nouveau_drm *drm = nouveau_drm(dev);
233 struct nouveau_fbdev *fbcon = drm->fbcon;
234 if (fbcon && drm->channel) {
236 fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
238 nouveau_channel_idle(drm->channel);
239 nvif_object_fini(&fbcon->twod);
240 nvif_object_fini(&fbcon->blit);
241 nvif_object_fini(&fbcon->gdi);
242 nvif_object_fini(&fbcon->patt);
243 nvif_object_fini(&fbcon->rop);
244 nvif_object_fini(&fbcon->clip);
245 nvif_object_fini(&fbcon->surf2d);
250 nouveau_fbcon_accel_init(struct drm_device *dev)
252 struct nouveau_drm *drm = nouveau_drm(dev);
253 struct nouveau_fbdev *fbcon = drm->fbcon;
254 struct fb_info *info = fbcon->helper.fbdev;
257 if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA)
258 ret = nv04_fbcon_accel_init(info);
260 if (drm->device.info.family < NV_DEVICE_INFO_V0_FERMI)
261 ret = nv50_fbcon_accel_init(info);
263 ret = nvc0_fbcon_accel_init(info);
266 info->fbops = &nouveau_fbcon_ops;
269 static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
272 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
274 nv_crtc->lut.r[regno] = red;
275 nv_crtc->lut.g[regno] = green;
276 nv_crtc->lut.b[regno] = blue;
279 static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
280 u16 *blue, int regno)
282 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
284 *red = nv_crtc->lut.r[regno];
285 *green = nv_crtc->lut.g[regno];
286 *blue = nv_crtc->lut.b[regno];
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->dev;
314 struct nouveau_drm *drm = nouveau_drm(dev);
315 struct nvif_device *device = &drm->device;
316 struct fb_info *info;
317 struct drm_framebuffer *fb;
318 struct nouveau_framebuffer *nouveau_fb;
319 struct nouveau_channel *chan;
320 struct nouveau_bo *nvbo;
321 struct drm_mode_fb_cmd2 mode_cmd;
322 struct pci_dev *pdev = dev->pdev;
325 mode_cmd.width = sizes->surface_width;
326 mode_cmd.height = sizes->surface_height;
328 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
329 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
331 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
332 sizes->surface_depth);
334 size = mode_cmd.pitches[0] * mode_cmd.height;
335 size = roundup(size, PAGE_SIZE);
337 ret = nouveau_gem_new(dev, size, 0, NOUVEAU_GEM_DOMAIN_VRAM,
340 NV_ERROR(drm, "failed to allocate framebuffer\n");
344 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
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_bo_vma_add(nvbo, drm->client.vm,
359 &fbcon->nouveau_fb.vma);
361 NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
366 mutex_lock(&dev->struct_mutex);
368 info = framebuffer_alloc(0, &pdev->dev);
374 ret = fb_alloc_cmap(&info->cmap, 256, 0);
377 framebuffer_release(info);
383 nouveau_framebuffer_init(dev, &fbcon->nouveau_fb, &mode_cmd, nvbo);
385 nouveau_fb = &fbcon->nouveau_fb;
386 fb = &nouveau_fb->base;
389 fbcon->helper.fb = fb;
390 fbcon->helper.fbdev = info;
392 strcpy(info->fix.id, "nouveaufb");
394 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
396 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
397 FBINFO_HWACCEL_FILLRECT |
398 FBINFO_HWACCEL_IMAGEBLIT;
399 info->flags |= FBINFO_CAN_FORCE_OUTPUT;
400 info->fbops = &nouveau_fbcon_sw_ops;
401 info->fix.smem_start = nvbo->bo.mem.bus.base +
402 nvbo->bo.mem.bus.offset;
403 info->fix.smem_len = size;
405 info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
406 info->screen_size = size;
408 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
409 drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height);
411 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
413 mutex_unlock(&dev->struct_mutex);
416 nouveau_fbcon_accel_init(dev);
417 nouveau_fbcon_zfill(dev, fbcon);
419 /* To allow resizeing without swapping buffers */
420 NV_INFO(drm, "allocated %dx%d fb: 0x%lx, bo %p\n",
421 nouveau_fb->base.width, nouveau_fb->base.height,
422 nvbo->bo.offset, nvbo);
424 vga_switcheroo_client_fb_set(dev->pdev, info);
428 mutex_unlock(&dev->struct_mutex);
430 nouveau_bo_vma_del(nvbo, &fbcon->nouveau_fb.vma);
431 nouveau_bo_unmap(nvbo);
433 nouveau_bo_unpin(nvbo);
435 nouveau_bo_ref(NULL, &nvbo);
441 nouveau_fbcon_output_poll_changed(struct drm_device *dev)
443 struct nouveau_drm *drm = nouveau_drm(dev);
445 drm_fb_helper_hotplug_event(&drm->fbcon->helper);
449 nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
451 struct nouveau_framebuffer *nouveau_fb = &fbcon->nouveau_fb;
452 struct fb_info *info;
454 if (fbcon->helper.fbdev) {
455 info = fbcon->helper.fbdev;
456 unregister_framebuffer(info);
458 fb_dealloc_cmap(&info->cmap);
459 framebuffer_release(info);
462 if (nouveau_fb->nvbo) {
463 nouveau_bo_unmap(nouveau_fb->nvbo);
464 nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
465 nouveau_bo_unpin(nouveau_fb->nvbo);
466 drm_gem_object_unreference_unlocked(&nouveau_fb->nvbo->gem);
467 nouveau_fb->nvbo = NULL;
469 drm_fb_helper_fini(&fbcon->helper);
470 drm_framebuffer_unregister_private(&nouveau_fb->base);
471 drm_framebuffer_cleanup(&nouveau_fb->base);
475 void nouveau_fbcon_gpu_lockup(struct fb_info *info)
477 struct nouveau_fbdev *fbcon = info->par;
478 struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
480 NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
481 info->flags |= FBINFO_HWACCEL_DISABLED;
484 static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
485 .gamma_set = nouveau_fbcon_gamma_set,
486 .gamma_get = nouveau_fbcon_gamma_get,
487 .fb_probe = nouveau_fbcon_create,
491 nouveau_fbcon_set_suspend_work(struct work_struct *work)
493 struct nouveau_fbdev *fbcon = container_of(work, typeof(*fbcon), work);
495 nouveau_fbcon_accel_restore(fbcon->dev);
496 nouveau_fbcon_zfill(fbcon->dev, fbcon);
497 fb_set_suspend(fbcon->helper.fbdev, FBINFO_STATE_RUNNING);
502 nouveau_fbcon_init(struct drm_device *dev)
504 struct nouveau_drm *drm = nouveau_drm(dev);
505 struct nouveau_fbdev *fbcon;
509 if (!dev->mode_config.num_crtc ||
510 (dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
513 fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
517 INIT_WORK(&fbcon->work, nouveau_fbcon_set_suspend_work);
521 drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);
523 ret = drm_fb_helper_init(dev, &fbcon->helper,
524 dev->mode_config.num_crtc, 4);
530 drm_fb_helper_single_add_all_connectors(&fbcon->helper);
532 if (drm->device.info.ram_size <= 32 * 1024 * 1024)
535 if (drm->device.info.ram_size <= 64 * 1024 * 1024)
540 /* disable all the possible outputs/crtcs before entering KMS mode */
541 drm_helper_disable_unused_functions(dev);
543 drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
548 nouveau_fbcon_fini(struct drm_device *dev)
550 struct nouveau_drm *drm = nouveau_drm(dev);
555 nouveau_fbcon_accel_fini(dev);
556 nouveau_fbcon_destroy(dev, drm->fbcon);
562 nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
564 struct nouveau_drm *drm = nouveau_drm(dev);
566 if (state == FBINFO_STATE_RUNNING) {
567 schedule_work(&drm->fbcon->work);
570 flush_work(&drm->fbcon->work);
572 fb_set_suspend(drm->fbcon->helper.fbdev, state);
573 nouveau_fbcon_accel_save_disable(dev);