1 /*
2 * Copyright © 2007 David Airlie
3 *
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:
10 *
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
13 * Software.
14 *
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.
22 *
23 * Authors:
24 * David Airlie
25 */
26
27 #include <linux/module.h>
28 #include <linux/kernel.h>
29 #include <linux/errno.h>
30 #include <linux/string.h>
31 #include <linux/mm.h>
32 #include <linux/tty.h>
33 #include <linux/sysrq.h>
34 #include <linux/delay.h>
35 #include <linux/fb.h>
36 #include <linux/init.h>
37 #include <linux/screen_info.h>
38 #include <linux/vga_switcheroo.h>
39 #include <linux/console.h>
40
41 #include "drmP.h"
42 #include "drm.h"
43 #include "drm_crtc.h"
44 #include "drm_crtc_helper.h"
45 #include "drm_fb_helper.h"
46 #include "nouveau_drv.h"
47 #include "nouveau_drm.h"
48 #include "nouveau_crtc.h"
49 #include "nouveau_fb.h"
50 #include "nouveau_fbcon.h"
51 #include "nouveau_dma.h"
52
53 static void
nouveau_fbcon_fillrect(struct fb_info * info,const struct fb_fillrect * rect)54 nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
55 {
56 struct nouveau_fbdev *nfbdev = info->par;
57 struct drm_device *dev = nfbdev->dev;
58 struct drm_nouveau_private *dev_priv = dev->dev_private;
59 int ret;
60
61 if (info->state != FBINFO_STATE_RUNNING)
62 return;
63
64 ret = -ENODEV;
65 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
66 mutex_trylock(&dev_priv->channel->mutex)) {
67 if (dev_priv->card_type < NV_50)
68 ret = nv04_fbcon_fillrect(info, rect);
69 else
70 if (dev_priv->card_type < NV_C0)
71 ret = nv50_fbcon_fillrect(info, rect);
72 else
73 ret = nvc0_fbcon_fillrect(info, rect);
74 mutex_unlock(&dev_priv->channel->mutex);
75 }
76
77 if (ret == 0)
78 return;
79
80 if (ret != -ENODEV)
81 nouveau_fbcon_gpu_lockup(info);
82 cfb_fillrect(info, rect);
83 }
84
85 static void
nouveau_fbcon_copyarea(struct fb_info * info,const struct fb_copyarea * image)86 nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image)
87 {
88 struct nouveau_fbdev *nfbdev = info->par;
89 struct drm_device *dev = nfbdev->dev;
90 struct drm_nouveau_private *dev_priv = dev->dev_private;
91 int ret;
92
93 if (info->state != FBINFO_STATE_RUNNING)
94 return;
95
96 ret = -ENODEV;
97 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
98 mutex_trylock(&dev_priv->channel->mutex)) {
99 if (dev_priv->card_type < NV_50)
100 ret = nv04_fbcon_copyarea(info, image);
101 else
102 if (dev_priv->card_type < NV_C0)
103 ret = nv50_fbcon_copyarea(info, image);
104 else
105 ret = nvc0_fbcon_copyarea(info, image);
106 mutex_unlock(&dev_priv->channel->mutex);
107 }
108
109 if (ret == 0)
110 return;
111
112 if (ret != -ENODEV)
113 nouveau_fbcon_gpu_lockup(info);
114 cfb_copyarea(info, image);
115 }
116
117 static void
nouveau_fbcon_imageblit(struct fb_info * info,const struct fb_image * image)118 nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
119 {
120 struct nouveau_fbdev *nfbdev = info->par;
121 struct drm_device *dev = nfbdev->dev;
122 struct drm_nouveau_private *dev_priv = dev->dev_private;
123 int ret;
124
125 if (info->state != FBINFO_STATE_RUNNING)
126 return;
127
128 ret = -ENODEV;
129 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
130 mutex_trylock(&dev_priv->channel->mutex)) {
131 if (dev_priv->card_type < NV_50)
132 ret = nv04_fbcon_imageblit(info, image);
133 else
134 if (dev_priv->card_type < NV_C0)
135 ret = nv50_fbcon_imageblit(info, image);
136 else
137 ret = nvc0_fbcon_imageblit(info, image);
138 mutex_unlock(&dev_priv->channel->mutex);
139 }
140
141 if (ret == 0)
142 return;
143
144 if (ret != -ENODEV)
145 nouveau_fbcon_gpu_lockup(info);
146 cfb_imageblit(info, image);
147 }
148
149 static int
nouveau_fbcon_sync(struct fb_info * info)150 nouveau_fbcon_sync(struct fb_info *info)
151 {
152 struct nouveau_fbdev *nfbdev = info->par;
153 struct drm_device *dev = nfbdev->dev;
154 struct drm_nouveau_private *dev_priv = dev->dev_private;
155 struct nouveau_channel *chan = dev_priv->channel;
156 int ret, i;
157
158 if (!chan || !chan->accel_done || in_interrupt() ||
159 info->state != FBINFO_STATE_RUNNING ||
160 info->flags & FBINFO_HWACCEL_DISABLED)
161 return 0;
162
163 if (!mutex_trylock(&chan->mutex))
164 return 0;
165
166 ret = RING_SPACE(chan, 4);
167 if (ret) {
168 mutex_unlock(&chan->mutex);
169 nouveau_fbcon_gpu_lockup(info);
170 return 0;
171 }
172
173 if (dev_priv->card_type >= NV_C0) {
174 BEGIN_NVC0(chan, 2, NvSub2D, 0x010c, 1);
175 OUT_RING (chan, 0);
176 BEGIN_NVC0(chan, 2, NvSub2D, 0x0100, 1);
177 OUT_RING (chan, 0);
178 } else {
179 BEGIN_RING(chan, 0, 0x0104, 1);
180 OUT_RING (chan, 0);
181 BEGIN_RING(chan, 0, 0x0100, 1);
182 OUT_RING (chan, 0);
183 }
184
185 nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy/4 + 3, 0xffffffff);
186 FIRE_RING(chan);
187 mutex_unlock(&chan->mutex);
188
189 ret = -EBUSY;
190 for (i = 0; i < 100000; i++) {
191 if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy/4 + 3)) {
192 ret = 0;
193 break;
194 }
195 DRM_UDELAY(1);
196 }
197
198 if (ret) {
199 nouveau_fbcon_gpu_lockup(info);
200 return 0;
201 }
202
203 chan->accel_done = false;
204 return 0;
205 }
206
207 static struct fb_ops nouveau_fbcon_ops = {
208 .owner = THIS_MODULE,
209 .fb_check_var = drm_fb_helper_check_var,
210 .fb_set_par = drm_fb_helper_set_par,
211 .fb_fillrect = nouveau_fbcon_fillrect,
212 .fb_copyarea = nouveau_fbcon_copyarea,
213 .fb_imageblit = nouveau_fbcon_imageblit,
214 .fb_sync = nouveau_fbcon_sync,
215 .fb_pan_display = drm_fb_helper_pan_display,
216 .fb_blank = drm_fb_helper_blank,
217 .fb_setcmap = drm_fb_helper_setcmap,
218 .fb_debug_enter = drm_fb_helper_debug_enter,
219 .fb_debug_leave = drm_fb_helper_debug_leave,
220 };
221
222 static struct fb_ops nouveau_fbcon_sw_ops = {
223 .owner = THIS_MODULE,
224 .fb_check_var = drm_fb_helper_check_var,
225 .fb_set_par = drm_fb_helper_set_par,
226 .fb_fillrect = cfb_fillrect,
227 .fb_copyarea = cfb_copyarea,
228 .fb_imageblit = cfb_imageblit,
229 .fb_pan_display = drm_fb_helper_pan_display,
230 .fb_blank = drm_fb_helper_blank,
231 .fb_setcmap = drm_fb_helper_setcmap,
232 .fb_debug_enter = drm_fb_helper_debug_enter,
233 .fb_debug_leave = drm_fb_helper_debug_leave,
234 };
235
nouveau_fbcon_gamma_set(struct drm_crtc * crtc,u16 red,u16 green,u16 blue,int regno)236 static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
237 u16 blue, int regno)
238 {
239 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
240
241 nv_crtc->lut.r[regno] = red;
242 nv_crtc->lut.g[regno] = green;
243 nv_crtc->lut.b[regno] = blue;
244 }
245
nouveau_fbcon_gamma_get(struct drm_crtc * crtc,u16 * red,u16 * green,u16 * blue,int regno)246 static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
247 u16 *blue, int regno)
248 {
249 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
250
251 *red = nv_crtc->lut.r[regno];
252 *green = nv_crtc->lut.g[regno];
253 *blue = nv_crtc->lut.b[regno];
254 }
255
256 static void
nouveau_fbcon_zfill(struct drm_device * dev,struct nouveau_fbdev * nfbdev)257 nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *nfbdev)
258 {
259 struct fb_info *info = nfbdev->helper.fbdev;
260 struct fb_fillrect rect;
261
262 /* Clear the entire fbcon. The drm will program every connector
263 * with it's preferred mode. If the sizes differ, one display will
264 * quite likely have garbage around the console.
265 */
266 rect.dx = rect.dy = 0;
267 rect.width = info->var.xres_virtual;
268 rect.height = info->var.yres_virtual;
269 rect.color = 0;
270 rect.rop = ROP_COPY;
271 info->fbops->fb_fillrect(info, &rect);
272 }
273
274 static int
nouveau_fbcon_create(struct nouveau_fbdev * nfbdev,struct drm_fb_helper_surface_size * sizes)275 nouveau_fbcon_create(struct nouveau_fbdev *nfbdev,
276 struct drm_fb_helper_surface_size *sizes)
277 {
278 struct drm_device *dev = nfbdev->dev;
279 struct drm_nouveau_private *dev_priv = dev->dev_private;
280 struct fb_info *info;
281 struct drm_framebuffer *fb;
282 struct nouveau_framebuffer *nouveau_fb;
283 struct nouveau_channel *chan;
284 struct nouveau_bo *nvbo;
285 struct drm_mode_fb_cmd2 mode_cmd;
286 struct pci_dev *pdev = dev->pdev;
287 struct device *device = &pdev->dev;
288 int size, ret;
289
290 mode_cmd.width = sizes->surface_width;
291 mode_cmd.height = sizes->surface_height;
292
293 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
294 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
295
296 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
297 sizes->surface_depth);
298
299 size = mode_cmd.pitches[0] * mode_cmd.height;
300 size = roundup(size, PAGE_SIZE);
301
302 ret = nouveau_gem_new(dev, size, 0, NOUVEAU_GEM_DOMAIN_VRAM,
303 0, 0x0000, &nvbo);
304 if (ret) {
305 NV_ERROR(dev, "failed to allocate framebuffer\n");
306 goto out;
307 }
308
309 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
310 if (ret) {
311 NV_ERROR(dev, "failed to pin fb: %d\n", ret);
312 nouveau_bo_ref(NULL, &nvbo);
313 goto out;
314 }
315
316 ret = nouveau_bo_map(nvbo);
317 if (ret) {
318 NV_ERROR(dev, "failed to map fb: %d\n", ret);
319 nouveau_bo_unpin(nvbo);
320 nouveau_bo_ref(NULL, &nvbo);
321 goto out;
322 }
323
324 chan = nouveau_nofbaccel ? NULL : dev_priv->channel;
325 if (chan && dev_priv->card_type >= NV_50) {
326 ret = nouveau_bo_vma_add(nvbo, chan->vm, &nfbdev->nouveau_fb.vma);
327 if (ret) {
328 NV_ERROR(dev, "failed to map fb into chan: %d\n", ret);
329 chan = NULL;
330 }
331 }
332
333 mutex_lock(&dev->struct_mutex);
334
335 info = framebuffer_alloc(0, device);
336 if (!info) {
337 ret = -ENOMEM;
338 goto out_unref;
339 }
340
341 ret = fb_alloc_cmap(&info->cmap, 256, 0);
342 if (ret) {
343 ret = -ENOMEM;
344 goto out_unref;
345 }
346
347 info->par = nfbdev;
348
349 nouveau_framebuffer_init(dev, &nfbdev->nouveau_fb, &mode_cmd, nvbo);
350
351 nouveau_fb = &nfbdev->nouveau_fb;
352 fb = &nouveau_fb->base;
353
354 /* setup helper */
355 nfbdev->helper.fb = fb;
356 nfbdev->helper.fbdev = info;
357
358 strcpy(info->fix.id, "nouveaufb");
359 if (nouveau_nofbaccel)
360 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
361 else
362 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
363 FBINFO_HWACCEL_FILLRECT |
364 FBINFO_HWACCEL_IMAGEBLIT;
365 info->flags |= FBINFO_CAN_FORCE_OUTPUT;
366 info->fbops = &nouveau_fbcon_sw_ops;
367 info->fix.smem_start = nvbo->bo.mem.bus.base +
368 nvbo->bo.mem.bus.offset;
369 info->fix.smem_len = size;
370
371 info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
372 info->screen_size = size;
373
374 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
375 drm_fb_helper_fill_var(info, &nfbdev->helper, sizes->fb_width, sizes->fb_height);
376
377 /* Set aperture base/size for vesafb takeover */
378 info->apertures = dev_priv->apertures;
379 if (!info->apertures) {
380 ret = -ENOMEM;
381 goto out_unref;
382 }
383
384 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
385
386 mutex_unlock(&dev->struct_mutex);
387
388 if (dev_priv->channel && !nouveau_nofbaccel) {
389 ret = -ENODEV;
390 if (dev_priv->card_type < NV_50)
391 ret = nv04_fbcon_accel_init(info);
392 else
393 if (dev_priv->card_type < NV_C0)
394 ret = nv50_fbcon_accel_init(info);
395 else
396 ret = nvc0_fbcon_accel_init(info);
397
398 if (ret == 0)
399 info->fbops = &nouveau_fbcon_ops;
400 }
401
402 nouveau_fbcon_zfill(dev, nfbdev);
403
404 /* To allow resizeing without swapping buffers */
405 NV_INFO(dev, "allocated %dx%d fb: 0x%lx, bo %p\n",
406 nouveau_fb->base.width,
407 nouveau_fb->base.height,
408 nvbo->bo.offset, nvbo);
409
410 vga_switcheroo_client_fb_set(dev->pdev, info);
411 return 0;
412
413 out_unref:
414 mutex_unlock(&dev->struct_mutex);
415 out:
416 return ret;
417 }
418
419 static int
nouveau_fbcon_find_or_create_single(struct drm_fb_helper * helper,struct drm_fb_helper_surface_size * sizes)420 nouveau_fbcon_find_or_create_single(struct drm_fb_helper *helper,
421 struct drm_fb_helper_surface_size *sizes)
422 {
423 struct nouveau_fbdev *nfbdev = (struct nouveau_fbdev *)helper;
424 int new_fb = 0;
425 int ret;
426
427 if (!helper->fb) {
428 ret = nouveau_fbcon_create(nfbdev, sizes);
429 if (ret)
430 return ret;
431 new_fb = 1;
432 }
433 return new_fb;
434 }
435
436 void
nouveau_fbcon_output_poll_changed(struct drm_device * dev)437 nouveau_fbcon_output_poll_changed(struct drm_device *dev)
438 {
439 struct drm_nouveau_private *dev_priv = dev->dev_private;
440 drm_fb_helper_hotplug_event(&dev_priv->nfbdev->helper);
441 }
442
443 static int
nouveau_fbcon_destroy(struct drm_device * dev,struct nouveau_fbdev * nfbdev)444 nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *nfbdev)
445 {
446 struct nouveau_framebuffer *nouveau_fb = &nfbdev->nouveau_fb;
447 struct fb_info *info;
448
449 if (nfbdev->helper.fbdev) {
450 info = nfbdev->helper.fbdev;
451 unregister_framebuffer(info);
452 if (info->cmap.len)
453 fb_dealloc_cmap(&info->cmap);
454 framebuffer_release(info);
455 }
456
457 if (nouveau_fb->nvbo) {
458 nouveau_bo_unmap(nouveau_fb->nvbo);
459 nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
460 drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem);
461 nouveau_fb->nvbo = NULL;
462 }
463 drm_fb_helper_fini(&nfbdev->helper);
464 drm_framebuffer_cleanup(&nouveau_fb->base);
465 return 0;
466 }
467
nouveau_fbcon_gpu_lockup(struct fb_info * info)468 void nouveau_fbcon_gpu_lockup(struct fb_info *info)
469 {
470 struct nouveau_fbdev *nfbdev = info->par;
471 struct drm_device *dev = nfbdev->dev;
472
473 NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
474 info->flags |= FBINFO_HWACCEL_DISABLED;
475 }
476
477 static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
478 .gamma_set = nouveau_fbcon_gamma_set,
479 .gamma_get = nouveau_fbcon_gamma_get,
480 .fb_probe = nouveau_fbcon_find_or_create_single,
481 };
482
483
nouveau_fbcon_init(struct drm_device * dev)484 int nouveau_fbcon_init(struct drm_device *dev)
485 {
486 struct drm_nouveau_private *dev_priv = dev->dev_private;
487 struct nouveau_fbdev *nfbdev;
488 int preferred_bpp;
489 int ret;
490
491 nfbdev = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
492 if (!nfbdev)
493 return -ENOMEM;
494
495 nfbdev->dev = dev;
496 dev_priv->nfbdev = nfbdev;
497 nfbdev->helper.funcs = &nouveau_fbcon_helper_funcs;
498
499 ret = drm_fb_helper_init(dev, &nfbdev->helper,
500 dev->mode_config.num_crtc, 4);
501 if (ret) {
502 kfree(nfbdev);
503 return ret;
504 }
505
506 drm_fb_helper_single_add_all_connectors(&nfbdev->helper);
507
508 if (dev_priv->vram_size <= 32 * 1024 * 1024)
509 preferred_bpp = 8;
510 else if (dev_priv->vram_size <= 64 * 1024 * 1024)
511 preferred_bpp = 16;
512 else
513 preferred_bpp = 32;
514
515 drm_fb_helper_initial_config(&nfbdev->helper, preferred_bpp);
516 return 0;
517 }
518
nouveau_fbcon_fini(struct drm_device * dev)519 void nouveau_fbcon_fini(struct drm_device *dev)
520 {
521 struct drm_nouveau_private *dev_priv = dev->dev_private;
522
523 if (!dev_priv->nfbdev)
524 return;
525
526 nouveau_fbcon_destroy(dev, dev_priv->nfbdev);
527 kfree(dev_priv->nfbdev);
528 dev_priv->nfbdev = NULL;
529 }
530
nouveau_fbcon_save_disable_accel(struct drm_device * dev)531 void nouveau_fbcon_save_disable_accel(struct drm_device *dev)
532 {
533 struct drm_nouveau_private *dev_priv = dev->dev_private;
534
535 dev_priv->nfbdev->saved_flags = dev_priv->nfbdev->helper.fbdev->flags;
536 dev_priv->nfbdev->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
537 }
538
nouveau_fbcon_restore_accel(struct drm_device * dev)539 void nouveau_fbcon_restore_accel(struct drm_device *dev)
540 {
541 struct drm_nouveau_private *dev_priv = dev->dev_private;
542 dev_priv->nfbdev->helper.fbdev->flags = dev_priv->nfbdev->saved_flags;
543 }
544
nouveau_fbcon_set_suspend(struct drm_device * dev,int state)545 void nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
546 {
547 struct drm_nouveau_private *dev_priv = dev->dev_private;
548 console_lock();
549 if (state == 0)
550 nouveau_fbcon_save_disable_accel(dev);
551 fb_set_suspend(dev_priv->nfbdev->helper.fbdev, state);
552 if (state == 1)
553 nouveau_fbcon_restore_accel(dev);
554 console_unlock();
555 }
556
nouveau_fbcon_zfill_all(struct drm_device * dev)557 void nouveau_fbcon_zfill_all(struct drm_device *dev)
558 {
559 struct drm_nouveau_private *dev_priv = dev->dev_private;
560 nouveau_fbcon_zfill(dev, dev_priv->nfbdev);
561 }
562