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 #include <core/client.h>
55 #include <core/device.h>
57 #include <subdev/fb.h>
59 MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
60 static int nouveau_nofbaccel = 0;
61 module_param_named(nofbaccel, nouveau_nofbaccel, 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->dev);
68 struct nouveau_device *device = nv_device(drm->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->card_type < NV_50)
78 ret = nv04_fbcon_fillrect(info, rect);
80 if (device->card_type < NV_C0)
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 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->dev);
100 struct nouveau_device *device = nv_device(drm->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->card_type < NV_50)
110 ret = nv04_fbcon_copyarea(info, image);
112 if (device->card_type < NV_C0)
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 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->dev);
132 struct nouveau_device *device = nv_device(drm->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->card_type < NV_50)
142 ret = nv04_fbcon_imageblit(info, image);
144 if (device->card_type < NV_C0)
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 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->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;
186 static struct fb_ops nouveau_fbcon_ops = {
187 .owner = THIS_MODULE,
188 .fb_check_var = drm_fb_helper_check_var,
189 .fb_set_par = drm_fb_helper_set_par,
190 .fb_fillrect = nouveau_fbcon_fillrect,
191 .fb_copyarea = nouveau_fbcon_copyarea,
192 .fb_imageblit = nouveau_fbcon_imageblit,
193 .fb_sync = nouveau_fbcon_sync,
194 .fb_pan_display = drm_fb_helper_pan_display,
195 .fb_blank = drm_fb_helper_blank,
196 .fb_setcmap = drm_fb_helper_setcmap,
197 .fb_debug_enter = drm_fb_helper_debug_enter,
198 .fb_debug_leave = drm_fb_helper_debug_leave,
201 static struct fb_ops nouveau_fbcon_sw_ops = {
202 .owner = THIS_MODULE,
203 .fb_check_var = drm_fb_helper_check_var,
204 .fb_set_par = drm_fb_helper_set_par,
205 .fb_fillrect = cfb_fillrect,
206 .fb_copyarea = cfb_copyarea,
207 .fb_imageblit = cfb_imageblit,
208 .fb_pan_display = drm_fb_helper_pan_display,
209 .fb_blank = drm_fb_helper_blank,
210 .fb_setcmap = drm_fb_helper_setcmap,
211 .fb_debug_enter = drm_fb_helper_debug_enter,
212 .fb_debug_leave = drm_fb_helper_debug_leave,
215 static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
218 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
220 nv_crtc->lut.r[regno] = red;
221 nv_crtc->lut.g[regno] = green;
222 nv_crtc->lut.b[regno] = blue;
225 static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
226 u16 *blue, int regno)
228 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
230 *red = nv_crtc->lut.r[regno];
231 *green = nv_crtc->lut.g[regno];
232 *blue = nv_crtc->lut.b[regno];
236 nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
238 struct fb_info *info = fbcon->helper.fbdev;
239 struct fb_fillrect rect;
241 /* Clear the entire fbcon. The drm will program every connector
242 * with it's preferred mode. If the sizes differ, one display will
243 * quite likely have garbage around the console.
245 rect.dx = rect.dy = 0;
246 rect.width = info->var.xres_virtual;
247 rect.height = info->var.yres_virtual;
250 info->fbops->fb_fillrect(info, &rect);
254 nouveau_fbcon_create(struct nouveau_fbdev *fbcon,
255 struct drm_fb_helper_surface_size *sizes)
257 struct drm_device *dev = fbcon->dev;
258 struct nouveau_drm *drm = nouveau_drm(dev);
259 struct nouveau_device *device = nv_device(drm->device);
260 struct fb_info *info;
261 struct drm_framebuffer *fb;
262 struct nouveau_framebuffer *nouveau_fb;
263 struct nouveau_channel *chan;
264 struct nouveau_bo *nvbo;
265 struct drm_mode_fb_cmd2 mode_cmd;
266 struct pci_dev *pdev = dev->pdev;
269 mode_cmd.width = sizes->surface_width;
270 mode_cmd.height = sizes->surface_height;
272 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
273 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
275 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
276 sizes->surface_depth);
278 size = mode_cmd.pitches[0] * mode_cmd.height;
279 size = roundup(size, PAGE_SIZE);
281 ret = nouveau_gem_new(dev, size, 0, NOUVEAU_GEM_DOMAIN_VRAM,
284 NV_ERROR(drm, "failed to allocate framebuffer\n");
288 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
290 NV_ERROR(drm, "failed to pin fb: %d\n", ret);
291 nouveau_bo_ref(NULL, &nvbo);
295 ret = nouveau_bo_map(nvbo);
297 NV_ERROR(drm, "failed to map fb: %d\n", ret);
298 nouveau_bo_unpin(nvbo);
299 nouveau_bo_ref(NULL, &nvbo);
303 chan = nouveau_nofbaccel ? NULL : drm->channel;
304 if (chan && device->card_type >= NV_50) {
305 ret = nouveau_bo_vma_add(nvbo, nv_client(chan->cli)->vm,
306 &fbcon->nouveau_fb.vma);
308 NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
313 mutex_lock(&dev->struct_mutex);
315 info = framebuffer_alloc(0, &pdev->dev);
321 ret = fb_alloc_cmap(&info->cmap, 256, 0);
329 nouveau_framebuffer_init(dev, &fbcon->nouveau_fb, &mode_cmd, nvbo);
331 nouveau_fb = &fbcon->nouveau_fb;
332 fb = &nouveau_fb->base;
335 fbcon->helper.fb = fb;
336 fbcon->helper.fbdev = info;
338 strcpy(info->fix.id, "nouveaufb");
339 if (nouveau_nofbaccel)
340 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
342 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
343 FBINFO_HWACCEL_FILLRECT |
344 FBINFO_HWACCEL_IMAGEBLIT;
345 info->flags |= FBINFO_CAN_FORCE_OUTPUT;
346 info->fbops = &nouveau_fbcon_sw_ops;
347 info->fix.smem_start = nvbo->bo.mem.bus.base +
348 nvbo->bo.mem.bus.offset;
349 info->fix.smem_len = size;
351 info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
352 info->screen_size = size;
354 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
355 drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height);
357 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
359 mutex_unlock(&dev->struct_mutex);
363 if (device->card_type < NV_50)
364 ret = nv04_fbcon_accel_init(info);
366 if (device->card_type < NV_C0)
367 ret = nv50_fbcon_accel_init(info);
369 ret = nvc0_fbcon_accel_init(info);
372 info->fbops = &nouveau_fbcon_ops;
375 nouveau_fbcon_zfill(dev, fbcon);
377 /* To allow resizeing without swapping buffers */
378 NV_INFO(drm, "allocated %dx%d fb: 0x%lx, bo %p\n",
379 nouveau_fb->base.width, nouveau_fb->base.height,
380 nvbo->bo.offset, nvbo);
382 vga_switcheroo_client_fb_set(dev->pdev, info);
386 mutex_unlock(&dev->struct_mutex);
392 nouveau_fbcon_find_or_create_single(struct drm_fb_helper *helper,
393 struct drm_fb_helper_surface_size *sizes)
395 struct nouveau_fbdev *fbcon = (struct nouveau_fbdev *)helper;
400 ret = nouveau_fbcon_create(fbcon, sizes);
409 nouveau_fbcon_output_poll_changed(struct drm_device *dev)
411 struct nouveau_drm *drm = nouveau_drm(dev);
412 drm_fb_helper_hotplug_event(&drm->fbcon->helper);
416 nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
418 struct nouveau_framebuffer *nouveau_fb = &fbcon->nouveau_fb;
419 struct fb_info *info;
421 if (fbcon->helper.fbdev) {
422 info = fbcon->helper.fbdev;
423 unregister_framebuffer(info);
425 fb_dealloc_cmap(&info->cmap);
426 framebuffer_release(info);
429 if (nouveau_fb->nvbo) {
430 nouveau_bo_unmap(nouveau_fb->nvbo);
431 nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
432 drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem);
433 nouveau_fb->nvbo = NULL;
435 drm_fb_helper_fini(&fbcon->helper);
436 drm_framebuffer_unregister_private(&nouveau_fb->base);
437 drm_framebuffer_cleanup(&nouveau_fb->base);
441 void nouveau_fbcon_gpu_lockup(struct fb_info *info)
443 struct nouveau_fbdev *fbcon = info->par;
444 struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
446 NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
447 info->flags |= FBINFO_HWACCEL_DISABLED;
450 static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
451 .gamma_set = nouveau_fbcon_gamma_set,
452 .gamma_get = nouveau_fbcon_gamma_get,
453 .fb_probe = nouveau_fbcon_find_or_create_single,
458 nouveau_fbcon_init(struct drm_device *dev)
460 struct nouveau_drm *drm = nouveau_drm(dev);
461 struct nouveau_fb *pfb = nouveau_fb(drm->device);
462 struct nouveau_fbdev *fbcon;
466 if (!dev->mode_config.num_crtc)
469 fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
475 fbcon->helper.funcs = &nouveau_fbcon_helper_funcs;
477 ret = drm_fb_helper_init(dev, &fbcon->helper,
478 dev->mode_config.num_crtc, 4);
484 drm_fb_helper_single_add_all_connectors(&fbcon->helper);
486 if (pfb->ram.size <= 32 * 1024 * 1024)
489 if (pfb->ram.size <= 64 * 1024 * 1024)
494 /* disable all the possible outputs/crtcs before entering KMS mode */
495 drm_helper_disable_unused_functions(dev);
497 drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
502 nouveau_fbcon_fini(struct drm_device *dev)
504 struct nouveau_drm *drm = nouveau_drm(dev);
509 nouveau_fbcon_destroy(dev, drm->fbcon);
514 void nouveau_fbcon_save_disable_accel(struct drm_device *dev)
516 struct nouveau_drm *drm = nouveau_drm(dev);
518 drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
519 drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
522 void nouveau_fbcon_restore_accel(struct drm_device *dev)
524 struct nouveau_drm *drm = nouveau_drm(dev);
525 drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
528 void nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
530 struct nouveau_drm *drm = nouveau_drm(dev);
533 nouveau_fbcon_save_disable_accel(dev);
534 fb_set_suspend(drm->fbcon->helper.fbdev, state);
536 nouveau_fbcon_restore_accel(dev);
540 void nouveau_fbcon_zfill_all(struct drm_device *dev)
542 struct nouveau_drm *drm = nouveau_drm(dev);
543 nouveau_fbcon_zfill(dev, drm->fbcon);