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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
40#include "drmP.h"
41#include "drm.h"
42#include "drm_crtc.h"
43#include "drm_crtc_helper.h"
44#include "drm_fb_helper.h"
45#include "nouveau_drv.h"
46#include "nouveau_drm.h"
47#include "nouveau_crtc.h"
48#include "nouveau_fb.h"
49#include "nouveau_fbcon.h"
50#include "nouveau_dma.h"
51
52static void
53nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
54{
55 struct nouveau_fbdev *nfbdev = info->par;
56 struct drm_device *dev = nfbdev->dev;
57 struct drm_nouveau_private *dev_priv = dev->dev_private;
58 int ret;
59
60 if (info->state != FBINFO_STATE_RUNNING)
61 return;
62
63 ret = -ENODEV;
64 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
65 mutex_trylock(&dev_priv->channel->mutex)) {
66 if (dev_priv->card_type < NV_50)
67 ret = nv04_fbcon_fillrect(info, rect);
68 else
69 if (dev_priv->card_type < NV_C0)
70 ret = nv50_fbcon_fillrect(info, rect);
71 else
72 ret = nvc0_fbcon_fillrect(info, rect);
73 mutex_unlock(&dev_priv->channel->mutex);
74 }
75
76 if (ret == 0)
77 return;
78
79 if (ret != -ENODEV)
80 nouveau_fbcon_gpu_lockup(info);
81 cfb_fillrect(info, rect);
82}
83
84static void
85nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image)
86{
87 struct nouveau_fbdev *nfbdev = info->par;
88 struct drm_device *dev = nfbdev->dev;
89 struct drm_nouveau_private *dev_priv = dev->dev_private;
90 int ret;
91
92 if (info->state != FBINFO_STATE_RUNNING)
93 return;
94
95 ret = -ENODEV;
96 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
97 mutex_trylock(&dev_priv->channel->mutex)) {
98 if (dev_priv->card_type < NV_50)
99 ret = nv04_fbcon_copyarea(info, image);
100 else
101 if (dev_priv->card_type < NV_C0)
102 ret = nv50_fbcon_copyarea(info, image);
103 else
104 ret = nvc0_fbcon_copyarea(info, image);
105 mutex_unlock(&dev_priv->channel->mutex);
106 }
107
108 if (ret == 0)
109 return;
110
111 if (ret != -ENODEV)
112 nouveau_fbcon_gpu_lockup(info);
113 cfb_copyarea(info, image);
114}
115
116static void
117nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
118{
119 struct nouveau_fbdev *nfbdev = info->par;
120 struct drm_device *dev = nfbdev->dev;
121 struct drm_nouveau_private *dev_priv = dev->dev_private;
122 int ret;
123
124 if (info->state != FBINFO_STATE_RUNNING)
125 return;
126
127 ret = -ENODEV;
128 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
129 mutex_trylock(&dev_priv->channel->mutex)) {
130 if (dev_priv->card_type < NV_50)
131 ret = nv04_fbcon_imageblit(info, image);
132 else
133 if (dev_priv->card_type < NV_C0)
134 ret = nv50_fbcon_imageblit(info, image);
135 else
136 ret = nvc0_fbcon_imageblit(info, image);
137 mutex_unlock(&dev_priv->channel->mutex);
138 }
139
140 if (ret == 0)
141 return;
142
143 if (ret != -ENODEV)
144 nouveau_fbcon_gpu_lockup(info);
145 cfb_imageblit(info, image);
146}
147
148static int
149nouveau_fbcon_sync(struct fb_info *info)
150{
151 struct nouveau_fbdev *nfbdev = info->par;
152 struct drm_device *dev = nfbdev->dev;
153 struct drm_nouveau_private *dev_priv = dev->dev_private;
154 struct nouveau_channel *chan = dev_priv->channel;
155 int ret, i;
156
157 if (!chan || !chan->accel_done || in_interrupt() ||
158 info->state != FBINFO_STATE_RUNNING ||
159 info->flags & FBINFO_HWACCEL_DISABLED)
160 return 0;
161
162 if (!mutex_trylock(&chan->mutex))
163 return 0;
164
165 ret = RING_SPACE(chan, 4);
166 if (ret) {
167 mutex_unlock(&chan->mutex);
168 nouveau_fbcon_gpu_lockup(info);
169 return 0;
170 }
171
172 if (dev_priv->card_type >= NV_C0) {
173 BEGIN_NVC0(chan, 2, NvSub2D, 0x010c, 1);
174 OUT_RING (chan, 0);
175 BEGIN_NVC0(chan, 2, NvSub2D, 0x0100, 1);
176 OUT_RING (chan, 0);
177 } else {
178 BEGIN_RING(chan, 0, 0x0104, 1);
179 OUT_RING (chan, 0);
180 BEGIN_RING(chan, 0, 0x0100, 1);
181 OUT_RING (chan, 0);
182 }
183
184 nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy/4 + 3, 0xffffffff);
185 FIRE_RING(chan);
186 mutex_unlock(&chan->mutex);
187
188 ret = -EBUSY;
189 for (i = 0; i < 100000; i++) {
190 if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy/4 + 3)) {
191 ret = 0;
192 break;
193 }
194 DRM_UDELAY(1);
195 }
196
197 if (ret) {
198 nouveau_fbcon_gpu_lockup(info);
199 return 0;
200 }
201
202 chan->accel_done = false;
203 return 0;
204}
205
206static struct fb_ops nouveau_fbcon_ops = {
207 .owner = THIS_MODULE,
208 .fb_check_var = drm_fb_helper_check_var,
209 .fb_set_par = drm_fb_helper_set_par,
210 .fb_fillrect = nouveau_fbcon_fillrect,
211 .fb_copyarea = nouveau_fbcon_copyarea,
212 .fb_imageblit = nouveau_fbcon_imageblit,
213 .fb_sync = nouveau_fbcon_sync,
214 .fb_pan_display = drm_fb_helper_pan_display,
215 .fb_blank = drm_fb_helper_blank,
216 .fb_setcmap = drm_fb_helper_setcmap,
217 .fb_debug_enter = drm_fb_helper_debug_enter,
218 .fb_debug_leave = drm_fb_helper_debug_leave,
219};
220
221static struct fb_ops nouveau_fbcon_sw_ops = {
222 .owner = THIS_MODULE,
223 .fb_check_var = drm_fb_helper_check_var,
224 .fb_set_par = drm_fb_helper_set_par,
225 .fb_fillrect = cfb_fillrect,
226 .fb_copyarea = cfb_copyarea,
227 .fb_imageblit = 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,
233};
234
235static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
236 u16 blue, int regno)
237{
238 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
239
240 nv_crtc->lut.r[regno] = red;
241 nv_crtc->lut.g[regno] = green;
242 nv_crtc->lut.b[regno] = blue;
243}
244
245static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
246 u16 *blue, int regno)
247{
248 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
249
250 *red = nv_crtc->lut.r[regno];
251 *green = nv_crtc->lut.g[regno];
252 *blue = nv_crtc->lut.b[regno];
253}
254
255static void
256nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *nfbdev)
257{
258 struct fb_info *info = nfbdev->helper.fbdev;
259 struct fb_fillrect rect;
260
261 /* Clear the entire fbcon. The drm will program every connector
262 * with it's preferred mode. If the sizes differ, one display will
263 * quite likely have garbage around the console.
264 */
265 rect.dx = rect.dy = 0;
266 rect.width = info->var.xres_virtual;
267 rect.height = info->var.yres_virtual;
268 rect.color = 0;
269 rect.rop = ROP_COPY;
270 info->fbops->fb_fillrect(info, &rect);
271}
272
273static int
274nouveau_fbcon_create(struct nouveau_fbdev *nfbdev,
275 struct drm_fb_helper_surface_size *sizes)
276{
277 struct drm_device *dev = nfbdev->dev;
278 struct drm_nouveau_private *dev_priv = dev->dev_private;
279 struct fb_info *info;
280 struct drm_framebuffer *fb;
281 struct nouveau_framebuffer *nouveau_fb;
282 struct nouveau_channel *chan;
283 struct nouveau_bo *nvbo;
284 struct drm_mode_fb_cmd mode_cmd;
285 struct pci_dev *pdev = dev->pdev;
286 struct device *device = &pdev->dev;
287 int size, ret;
288
289 mode_cmd.width = sizes->surface_width;
290 mode_cmd.height = sizes->surface_height;
291
292 mode_cmd.bpp = sizes->surface_bpp;
293 mode_cmd.pitch = mode_cmd.width * (mode_cmd.bpp >> 3);
294 mode_cmd.pitch = roundup(mode_cmd.pitch, 256);
295 mode_cmd.depth = sizes->surface_depth;
296
297 size = mode_cmd.pitch * mode_cmd.height;
298 size = roundup(size, PAGE_SIZE);
299
300 ret = nouveau_gem_new(dev, size, 0, NOUVEAU_GEM_DOMAIN_VRAM,
301 0, 0x0000, &nvbo);
302 if (ret) {
303 NV_ERROR(dev, "failed to allocate framebuffer\n");
304 goto out;
305 }
306
307 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
308 if (ret) {
309 NV_ERROR(dev, "failed to pin fb: %d\n", ret);
310 nouveau_bo_ref(NULL, &nvbo);
311 goto out;
312 }
313
314 ret = nouveau_bo_map(nvbo);
315 if (ret) {
316 NV_ERROR(dev, "failed to map fb: %d\n", ret);
317 nouveau_bo_unpin(nvbo);
318 nouveau_bo_ref(NULL, &nvbo);
319 goto out;
320 }
321
322 chan = nouveau_nofbaccel ? NULL : dev_priv->channel;
323 if (chan && dev_priv->card_type >= NV_50) {
324 ret = nouveau_bo_vma_add(nvbo, chan->vm, &nfbdev->nouveau_fb.vma);
325 if (ret) {
326 NV_ERROR(dev, "failed to map fb into chan: %d\n", ret);
327 chan = NULL;
328 }
329 }
330
331 mutex_lock(&dev->struct_mutex);
332
333 info = framebuffer_alloc(0, device);
334 if (!info) {
335 ret = -ENOMEM;
336 goto out_unref;
337 }
338
339 ret = fb_alloc_cmap(&info->cmap, 256, 0);
340 if (ret) {
341 ret = -ENOMEM;
342 goto out_unref;
343 }
344
345 info->par = nfbdev;
346
347 nouveau_framebuffer_init(dev, &nfbdev->nouveau_fb, &mode_cmd, nvbo);
348
349 nouveau_fb = &nfbdev->nouveau_fb;
350 fb = &nouveau_fb->base;
351
352 /* setup helper */
353 nfbdev->helper.fb = fb;
354 nfbdev->helper.fbdev = info;
355
356 strcpy(info->fix.id, "nouveaufb");
357 if (nouveau_nofbaccel)
358 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
359 else
360 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
361 FBINFO_HWACCEL_FILLRECT |
362 FBINFO_HWACCEL_IMAGEBLIT;
363 info->flags |= FBINFO_CAN_FORCE_OUTPUT;
364 info->fbops = &nouveau_fbcon_sw_ops;
365 info->fix.smem_start = nvbo->bo.mem.bus.base +
366 nvbo->bo.mem.bus.offset;
367 info->fix.smem_len = size;
368
369 info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
370 info->screen_size = size;
371
372 drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
373 drm_fb_helper_fill_var(info, &nfbdev->helper, sizes->fb_width, sizes->fb_height);
374
375 /* Set aperture base/size for vesafb takeover */
376 info->apertures = dev_priv->apertures;
377 if (!info->apertures) {
378 ret = -ENOMEM;
379 goto out_unref;
380 }
381
382 info->pixmap.size = 64*1024;
383 info->pixmap.buf_align = 8;
384 info->pixmap.access_align = 32;
385 info->pixmap.flags = FB_PIXMAP_SYSTEM;
386 info->pixmap.scan_align = 1;
387
388 mutex_unlock(&dev->struct_mutex);
389
390 if (dev_priv->channel && !nouveau_nofbaccel) {
391 ret = -ENODEV;
392 if (dev_priv->card_type < NV_50)
393 ret = nv04_fbcon_accel_init(info);
394 else
395 if (dev_priv->card_type < NV_C0)
396 ret = nv50_fbcon_accel_init(info);
397 else
398 ret = nvc0_fbcon_accel_init(info);
399
400 if (ret == 0)
401 info->fbops = &nouveau_fbcon_ops;
402 }
403
404 nouveau_fbcon_zfill(dev, nfbdev);
405
406 /* To allow resizeing without swapping buffers */
407 NV_INFO(dev, "allocated %dx%d fb: 0x%lx, bo %p\n",
408 nouveau_fb->base.width,
409 nouveau_fb->base.height,
410 nvbo->bo.offset, nvbo);
411
412 vga_switcheroo_client_fb_set(dev->pdev, info);
413 return 0;
414
415out_unref:
416 mutex_unlock(&dev->struct_mutex);
417out:
418 return ret;
419}
420
421static int
422nouveau_fbcon_find_or_create_single(struct drm_fb_helper *helper,
423 struct drm_fb_helper_surface_size *sizes)
424{
425 struct nouveau_fbdev *nfbdev = (struct nouveau_fbdev *)helper;
426 int new_fb = 0;
427 int ret;
428
429 if (!helper->fb) {
430 ret = nouveau_fbcon_create(nfbdev, sizes);
431 if (ret)
432 return ret;
433 new_fb = 1;
434 }
435 return new_fb;
436}
437
438void
439nouveau_fbcon_output_poll_changed(struct drm_device *dev)
440{
441 struct drm_nouveau_private *dev_priv = dev->dev_private;
442 drm_fb_helper_hotplug_event(&dev_priv->nfbdev->helper);
443}
444
445static int
446nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *nfbdev)
447{
448 struct nouveau_framebuffer *nouveau_fb = &nfbdev->nouveau_fb;
449 struct fb_info *info;
450
451 if (nfbdev->helper.fbdev) {
452 info = nfbdev->helper.fbdev;
453 unregister_framebuffer(info);
454 if (info->cmap.len)
455 fb_dealloc_cmap(&info->cmap);
456 framebuffer_release(info);
457 }
458
459 if (nouveau_fb->nvbo) {
460 nouveau_bo_unmap(nouveau_fb->nvbo);
461 nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
462 drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem);
463 nouveau_fb->nvbo = NULL;
464 }
465 drm_fb_helper_fini(&nfbdev->helper);
466 drm_framebuffer_cleanup(&nouveau_fb->base);
467 return 0;
468}
469
470void nouveau_fbcon_gpu_lockup(struct fb_info *info)
471{
472 struct nouveau_fbdev *nfbdev = info->par;
473 struct drm_device *dev = nfbdev->dev;
474
475 NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
476 info->flags |= FBINFO_HWACCEL_DISABLED;
477}
478
479static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
480 .gamma_set = nouveau_fbcon_gamma_set,
481 .gamma_get = nouveau_fbcon_gamma_get,
482 .fb_probe = nouveau_fbcon_find_or_create_single,
483};
484
485
486int nouveau_fbcon_init(struct drm_device *dev)
487{
488 struct drm_nouveau_private *dev_priv = dev->dev_private;
489 struct nouveau_fbdev *nfbdev;
490 int ret;
491
492 nfbdev = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
493 if (!nfbdev)
494 return -ENOMEM;
495
496 nfbdev->dev = dev;
497 dev_priv->nfbdev = nfbdev;
498 nfbdev->helper.funcs = &nouveau_fbcon_helper_funcs;
499
500 ret = drm_fb_helper_init(dev, &nfbdev->helper,
501 nv_two_heads(dev) ? 2 : 1, 4);
502 if (ret) {
503 kfree(nfbdev);
504 return ret;
505 }
506
507 drm_fb_helper_single_add_all_connectors(&nfbdev->helper);
508 drm_fb_helper_initial_config(&nfbdev->helper, 32);
509 return 0;
510}
511
512void nouveau_fbcon_fini(struct drm_device *dev)
513{
514 struct drm_nouveau_private *dev_priv = dev->dev_private;
515
516 if (!dev_priv->nfbdev)
517 return;
518
519 nouveau_fbcon_destroy(dev, dev_priv->nfbdev);
520 kfree(dev_priv->nfbdev);
521 dev_priv->nfbdev = NULL;
522}
523
524void nouveau_fbcon_save_disable_accel(struct drm_device *dev)
525{
526 struct drm_nouveau_private *dev_priv = dev->dev_private;
527
528 dev_priv->nfbdev->saved_flags = dev_priv->nfbdev->helper.fbdev->flags;
529 dev_priv->nfbdev->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
530}
531
532void nouveau_fbcon_restore_accel(struct drm_device *dev)
533{
534 struct drm_nouveau_private *dev_priv = dev->dev_private;
535 dev_priv->nfbdev->helper.fbdev->flags = dev_priv->nfbdev->saved_flags;
536}
537
538void nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
539{
540 struct drm_nouveau_private *dev_priv = dev->dev_private;
541 fb_set_suspend(dev_priv->nfbdev->helper.fbdev, state);
542}
543
544void nouveau_fbcon_zfill_all(struct drm_device *dev)
545{
546 struct drm_nouveau_private *dev_priv = dev->dev_private;
547 nouveau_fbcon_zfill(dev, dev_priv->nfbdev);
548}
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/init.h>
36#include <linux/screen_info.h>
37#include <linux/vga_switcheroo.h>
38#include <linux/console.h>
39
40#include <drm/drm_crtc.h>
41#include <drm/drm_crtc_helper.h>
42#include <drm/drm_fb_helper.h>
43#include <drm/drm_fourcc.h>
44#include <drm/drm_atomic.h>
45
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"
51#include "nouveau_vmm.h"
52
53#include "nouveau_crtc.h"
54
55MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
56int nouveau_nofbaccel = 0;
57module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);
58
59MODULE_PARM_DESC(fbcon_bpp, "fbcon bits-per-pixel (default: auto)");
60static int nouveau_fbcon_bpp;
61module_param_named(fbcon_bpp, nouveau_fbcon_bpp, int, 0400);
62
63static void
64nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
65{
66 struct nouveau_fbdev *fbcon = info->par;
67 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
68 struct nvif_device *device = &drm->client.device;
69 int ret;
70
71 if (info->state != FBINFO_STATE_RUNNING)
72 return;
73
74 ret = -ENODEV;
75 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
76 mutex_trylock(&drm->client.mutex)) {
77 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
78 ret = nv04_fbcon_fillrect(info, rect);
79 else
80 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
81 ret = nv50_fbcon_fillrect(info, rect);
82 else
83 ret = nvc0_fbcon_fillrect(info, rect);
84 mutex_unlock(&drm->client.mutex);
85 }
86
87 if (ret == 0)
88 return;
89
90 if (ret != -ENODEV)
91 nouveau_fbcon_gpu_lockup(info);
92 drm_fb_helper_cfb_fillrect(info, rect);
93}
94
95static void
96nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image)
97{
98 struct nouveau_fbdev *fbcon = info->par;
99 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
100 struct nvif_device *device = &drm->client.device;
101 int ret;
102
103 if (info->state != FBINFO_STATE_RUNNING)
104 return;
105
106 ret = -ENODEV;
107 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
108 mutex_trylock(&drm->client.mutex)) {
109 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
110 ret = nv04_fbcon_copyarea(info, image);
111 else
112 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
113 ret = nv50_fbcon_copyarea(info, image);
114 else
115 ret = nvc0_fbcon_copyarea(info, image);
116 mutex_unlock(&drm->client.mutex);
117 }
118
119 if (ret == 0)
120 return;
121
122 if (ret != -ENODEV)
123 nouveau_fbcon_gpu_lockup(info);
124 drm_fb_helper_cfb_copyarea(info, image);
125}
126
127static void
128nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
129{
130 struct nouveau_fbdev *fbcon = info->par;
131 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
132 struct nvif_device *device = &drm->client.device;
133 int ret;
134
135 if (info->state != FBINFO_STATE_RUNNING)
136 return;
137
138 ret = -ENODEV;
139 if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
140 mutex_trylock(&drm->client.mutex)) {
141 if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
142 ret = nv04_fbcon_imageblit(info, image);
143 else
144 if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
145 ret = nv50_fbcon_imageblit(info, image);
146 else
147 ret = nvc0_fbcon_imageblit(info, image);
148 mutex_unlock(&drm->client.mutex);
149 }
150
151 if (ret == 0)
152 return;
153
154 if (ret != -ENODEV)
155 nouveau_fbcon_gpu_lockup(info);
156 drm_fb_helper_cfb_imageblit(info, image);
157}
158
159static int
160nouveau_fbcon_sync(struct fb_info *info)
161{
162 struct nouveau_fbdev *fbcon = info->par;
163 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
164 struct nouveau_channel *chan = drm->channel;
165 int ret;
166
167 if (!chan || !chan->accel_done || in_interrupt() ||
168 info->state != FBINFO_STATE_RUNNING ||
169 info->flags & FBINFO_HWACCEL_DISABLED)
170 return 0;
171
172 if (!mutex_trylock(&drm->client.mutex))
173 return 0;
174
175 ret = nouveau_channel_idle(chan);
176 mutex_unlock(&drm->client.mutex);
177 if (ret) {
178 nouveau_fbcon_gpu_lockup(info);
179 return 0;
180 }
181
182 chan->accel_done = false;
183 return 0;
184}
185
186static int
187nouveau_fbcon_open(struct fb_info *info, int user)
188{
189 struct nouveau_fbdev *fbcon = info->par;
190 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
191 int ret = pm_runtime_get_sync(drm->dev->dev);
192 if (ret < 0 && ret != -EACCES) {
193 pm_runtime_put(drm->dev->dev);
194 return ret;
195 }
196 return 0;
197}
198
199static int
200nouveau_fbcon_release(struct fb_info *info, int user)
201{
202 struct nouveau_fbdev *fbcon = info->par;
203 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
204 pm_runtime_put(drm->dev->dev);
205 return 0;
206}
207
208static const struct fb_ops nouveau_fbcon_ops = {
209 .owner = THIS_MODULE,
210 DRM_FB_HELPER_DEFAULT_OPS,
211 .fb_open = nouveau_fbcon_open,
212 .fb_release = nouveau_fbcon_release,
213 .fb_fillrect = nouveau_fbcon_fillrect,
214 .fb_copyarea = nouveau_fbcon_copyarea,
215 .fb_imageblit = nouveau_fbcon_imageblit,
216 .fb_sync = nouveau_fbcon_sync,
217};
218
219static const struct fb_ops nouveau_fbcon_sw_ops = {
220 .owner = THIS_MODULE,
221 DRM_FB_HELPER_DEFAULT_OPS,
222 .fb_open = nouveau_fbcon_open,
223 .fb_release = nouveau_fbcon_release,
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};
228
229void
230nouveau_fbcon_accel_save_disable(struct drm_device *dev)
231{
232 struct nouveau_drm *drm = nouveau_drm(dev);
233 if (drm->fbcon && drm->fbcon->helper.fbdev) {
234 drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
235 drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
236 }
237}
238
239void
240nouveau_fbcon_accel_restore(struct drm_device *dev)
241{
242 struct nouveau_drm *drm = nouveau_drm(dev);
243 if (drm->fbcon && drm->fbcon->helper.fbdev) {
244 drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
245 }
246}
247
248static void
249nouveau_fbcon_accel_fini(struct drm_device *dev)
250{
251 struct nouveau_drm *drm = nouveau_drm(dev);
252 struct nouveau_fbdev *fbcon = drm->fbcon;
253 if (fbcon && drm->channel) {
254 console_lock();
255 if (fbcon->helper.fbdev)
256 fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
257 console_unlock();
258 nouveau_channel_idle(drm->channel);
259 nvif_object_dtor(&fbcon->twod);
260 nvif_object_dtor(&fbcon->blit);
261 nvif_object_dtor(&fbcon->gdi);
262 nvif_object_dtor(&fbcon->patt);
263 nvif_object_dtor(&fbcon->rop);
264 nvif_object_dtor(&fbcon->clip);
265 nvif_object_dtor(&fbcon->surf2d);
266 }
267}
268
269static void
270nouveau_fbcon_accel_init(struct drm_device *dev)
271{
272 struct nouveau_drm *drm = nouveau_drm(dev);
273 struct nouveau_fbdev *fbcon = drm->fbcon;
274 struct fb_info *info = fbcon->helper.fbdev;
275 int ret;
276
277 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA)
278 ret = nv04_fbcon_accel_init(info);
279 else
280 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI)
281 ret = nv50_fbcon_accel_init(info);
282 else
283 ret = nvc0_fbcon_accel_init(info);
284
285 if (ret == 0)
286 info->fbops = &nouveau_fbcon_ops;
287}
288
289static void
290nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
291{
292 struct fb_info *info = fbcon->helper.fbdev;
293 struct fb_fillrect rect;
294
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.
298 */
299 rect.dx = rect.dy = 0;
300 rect.width = info->var.xres_virtual;
301 rect.height = info->var.yres_virtual;
302 rect.color = 0;
303 rect.rop = ROP_COPY;
304 info->fbops->fb_fillrect(info, &rect);
305}
306
307static int
308nouveau_fbcon_create(struct drm_fb_helper *helper,
309 struct drm_fb_helper_surface_size *sizes)
310{
311 struct nouveau_fbdev *fbcon =
312 container_of(helper, struct nouveau_fbdev, helper);
313 struct drm_device *dev = fbcon->helper.dev;
314 struct nouveau_drm *drm = nouveau_drm(dev);
315 struct nvif_device *device = &drm->client.device;
316 struct fb_info *info;
317 struct drm_framebuffer *fb;
318 struct nouveau_channel *chan;
319 struct nouveau_bo *nvbo;
320 struct drm_mode_fb_cmd2 mode_cmd = {};
321 int ret;
322
323 mode_cmd.width = sizes->surface_width;
324 mode_cmd.height = sizes->surface_height;
325
326 mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
327 mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
328
329 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
330 sizes->surface_depth);
331
332 ret = nouveau_gem_new(&drm->client, mode_cmd.pitches[0] *
333 mode_cmd.height, 0, NOUVEAU_GEM_DOMAIN_VRAM,
334 0, 0x0000, &nvbo);
335 if (ret) {
336 NV_ERROR(drm, "failed to allocate framebuffer\n");
337 goto out;
338 }
339
340 ret = nouveau_framebuffer_new(dev, &mode_cmd, &nvbo->bo.base, &fb);
341 if (ret)
342 goto out_unref;
343
344 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM, false);
345 if (ret) {
346 NV_ERROR(drm, "failed to pin fb: %d\n", ret);
347 goto out_unref;
348 }
349
350 ret = nouveau_bo_map(nvbo);
351 if (ret) {
352 NV_ERROR(drm, "failed to map fb: %d\n", ret);
353 goto out_unpin;
354 }
355
356 chan = nouveau_nofbaccel ? NULL : drm->channel;
357 if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
358 ret = nouveau_vma_new(nvbo, chan->vmm, &fbcon->vma);
359 if (ret) {
360 NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
361 chan = NULL;
362 }
363 }
364
365 info = drm_fb_helper_alloc_fbi(helper);
366 if (IS_ERR(info)) {
367 ret = PTR_ERR(info);
368 goto out_unlock;
369 }
370
371 /* setup helper */
372 fbcon->helper.fb = fb;
373
374 if (!chan)
375 info->flags = FBINFO_HWACCEL_DISABLED;
376 else
377 info->flags = FBINFO_HWACCEL_COPYAREA |
378 FBINFO_HWACCEL_FILLRECT |
379 FBINFO_HWACCEL_IMAGEBLIT;
380 info->fbops = &nouveau_fbcon_sw_ops;
381 info->fix.smem_start = nvbo->bo.mem.bus.base +
382 nvbo->bo.mem.bus.offset;
383 info->fix.smem_len = nvbo->bo.mem.num_pages << PAGE_SHIFT;
384
385 info->screen_base = nvbo_kmap_obj_iovirtual(nvbo);
386 info->screen_size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
387
388 drm_fb_helper_fill_info(info, &fbcon->helper, sizes);
389
390 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
391
392 if (chan)
393 nouveau_fbcon_accel_init(dev);
394 nouveau_fbcon_zfill(dev, fbcon);
395
396 /* To allow resizeing without swapping buffers */
397 NV_INFO(drm, "allocated %dx%d fb: 0x%llx, bo %p\n",
398 fb->width, fb->height, nvbo->offset, nvbo);
399
400 vga_switcheroo_client_fb_set(dev->pdev, info);
401 return 0;
402
403out_unlock:
404 if (chan)
405 nouveau_vma_del(&fbcon->vma);
406 nouveau_bo_unmap(nvbo);
407out_unpin:
408 nouveau_bo_unpin(nvbo);
409out_unref:
410 nouveau_bo_ref(NULL, &nvbo);
411out:
412 return ret;
413}
414
415static int
416nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
417{
418 struct drm_framebuffer *fb = fbcon->helper.fb;
419 struct nouveau_bo *nvbo;
420
421 drm_fb_helper_unregister_fbi(&fbcon->helper);
422 drm_fb_helper_fini(&fbcon->helper);
423
424 if (fb && fb->obj[0]) {
425 nvbo = nouveau_gem_object(fb->obj[0]);
426 nouveau_vma_del(&fbcon->vma);
427 nouveau_bo_unmap(nvbo);
428 nouveau_bo_unpin(nvbo);
429 drm_framebuffer_put(fb);
430 }
431
432 return 0;
433}
434
435void nouveau_fbcon_gpu_lockup(struct fb_info *info)
436{
437 struct nouveau_fbdev *fbcon = info->par;
438 struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
439
440 NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
441 info->flags |= FBINFO_HWACCEL_DISABLED;
442}
443
444static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
445 .fb_probe = nouveau_fbcon_create,
446};
447
448static void
449nouveau_fbcon_set_suspend_work(struct work_struct *work)
450{
451 struct nouveau_drm *drm = container_of(work, typeof(*drm), fbcon_work);
452 int state = READ_ONCE(drm->fbcon_new_state);
453
454 if (state == FBINFO_STATE_RUNNING)
455 pm_runtime_get_sync(drm->dev->dev);
456
457 console_lock();
458 if (state == FBINFO_STATE_RUNNING)
459 nouveau_fbcon_accel_restore(drm->dev);
460 drm_fb_helper_set_suspend(&drm->fbcon->helper, state);
461 if (state != FBINFO_STATE_RUNNING)
462 nouveau_fbcon_accel_save_disable(drm->dev);
463 console_unlock();
464
465 if (state == FBINFO_STATE_RUNNING) {
466 nouveau_fbcon_hotplug_resume(drm->fbcon);
467 pm_runtime_mark_last_busy(drm->dev->dev);
468 pm_runtime_put_sync(drm->dev->dev);
469 }
470}
471
472void
473nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
474{
475 struct nouveau_drm *drm = nouveau_drm(dev);
476
477 if (!drm->fbcon)
478 return;
479
480 drm->fbcon_new_state = state;
481 /* Since runtime resume can happen as a result of a sysfs operation,
482 * it's possible we already have the console locked. So handle fbcon
483 * init/deinit from a seperate work thread
484 */
485 schedule_work(&drm->fbcon_work);
486}
487
488void
489nouveau_fbcon_output_poll_changed(struct drm_device *dev)
490{
491 struct nouveau_drm *drm = nouveau_drm(dev);
492 struct nouveau_fbdev *fbcon = drm->fbcon;
493 int ret;
494
495 if (!fbcon)
496 return;
497
498 mutex_lock(&fbcon->hotplug_lock);
499
500 ret = pm_runtime_get(dev->dev);
501 if (ret == 1 || ret == -EACCES) {
502 drm_fb_helper_hotplug_event(&fbcon->helper);
503
504 pm_runtime_mark_last_busy(dev->dev);
505 pm_runtime_put_autosuspend(dev->dev);
506 } else if (ret == 0) {
507 /* If the GPU was already in the process of suspending before
508 * this event happened, then we can't block here as we'll
509 * deadlock the runtime pmops since they wait for us to
510 * finish. So, just defer this event for when we runtime
511 * resume again. It will be handled by fbcon_work.
512 */
513 NV_DEBUG(drm, "fbcon HPD event deferred until runtime resume\n");
514 fbcon->hotplug_waiting = true;
515 pm_runtime_put_noidle(drm->dev->dev);
516 } else {
517 DRM_WARN("fbcon HPD event lost due to RPM failure: %d\n",
518 ret);
519 }
520
521 mutex_unlock(&fbcon->hotplug_lock);
522}
523
524void
525nouveau_fbcon_hotplug_resume(struct nouveau_fbdev *fbcon)
526{
527 struct nouveau_drm *drm;
528
529 if (!fbcon)
530 return;
531 drm = nouveau_drm(fbcon->helper.dev);
532
533 mutex_lock(&fbcon->hotplug_lock);
534 if (fbcon->hotplug_waiting) {
535 fbcon->hotplug_waiting = false;
536
537 NV_DEBUG(drm, "Handling deferred fbcon HPD events\n");
538 drm_fb_helper_hotplug_event(&fbcon->helper);
539 }
540 mutex_unlock(&fbcon->hotplug_lock);
541}
542
543int
544nouveau_fbcon_init(struct drm_device *dev)
545{
546 struct nouveau_drm *drm = nouveau_drm(dev);
547 struct nouveau_fbdev *fbcon;
548 int preferred_bpp = nouveau_fbcon_bpp;
549 int ret;
550
551 if (!dev->mode_config.num_crtc ||
552 (dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
553 return 0;
554
555 fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
556 if (!fbcon)
557 return -ENOMEM;
558
559 drm->fbcon = fbcon;
560 INIT_WORK(&drm->fbcon_work, nouveau_fbcon_set_suspend_work);
561 mutex_init(&fbcon->hotplug_lock);
562
563 drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);
564
565 ret = drm_fb_helper_init(dev, &fbcon->helper);
566 if (ret)
567 goto free;
568
569 if (preferred_bpp != 8 && preferred_bpp != 16 && preferred_bpp != 32) {
570 if (drm->client.device.info.ram_size <= 32 * 1024 * 1024)
571 preferred_bpp = 8;
572 else
573 if (drm->client.device.info.ram_size <= 64 * 1024 * 1024)
574 preferred_bpp = 16;
575 else
576 preferred_bpp = 32;
577 }
578
579 /* disable all the possible outputs/crtcs before entering KMS mode */
580 if (!drm_drv_uses_atomic_modeset(dev))
581 drm_helper_disable_unused_functions(dev);
582
583 ret = drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
584 if (ret)
585 goto fini;
586
587 if (fbcon->helper.fbdev)
588 fbcon->helper.fbdev->pixmap.buf_align = 4;
589 return 0;
590
591fini:
592 drm_fb_helper_fini(&fbcon->helper);
593free:
594 kfree(fbcon);
595 drm->fbcon = NULL;
596 return ret;
597}
598
599void
600nouveau_fbcon_fini(struct drm_device *dev)
601{
602 struct nouveau_drm *drm = nouveau_drm(dev);
603
604 if (!drm->fbcon)
605 return;
606
607 nouveau_fbcon_accel_fini(dev);
608 nouveau_fbcon_destroy(dev, drm->fbcon);
609 kfree(drm->fbcon);
610 drm->fbcon = NULL;
611}