1 /**************************************************************************
2 *
3 * Copyright © 2007 David Airlie
4 * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
22 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
23 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
24 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
25 * USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 **************************************************************************/
28
29 #include <linux/fb.h>
30 #include <linux/pci.h>
31
32 #include <drm/drm_fourcc.h>
33 #include <drm/ttm/ttm_placement.h>
34
35 #include "vmwgfx_drv.h"
36 #include "vmwgfx_kms.h"
37
38 #define VMW_DIRTY_DELAY (HZ / 30)
39
40 struct vmw_fb_par {
41 struct vmw_private *vmw_priv;
42
43 void *vmalloc;
44
45 struct mutex bo_mutex;
46 struct vmw_buffer_object *vmw_bo;
47 unsigned bo_size;
48 struct drm_framebuffer *set_fb;
49 struct drm_display_mode *set_mode;
50 u32 fb_x;
51 u32 fb_y;
52 bool bo_iowrite;
53
54 u32 pseudo_palette[17];
55
56 unsigned max_width;
57 unsigned max_height;
58
59 struct {
60 spinlock_t lock;
61 bool active;
62 unsigned x1;
63 unsigned y1;
64 unsigned x2;
65 unsigned y2;
66 } dirty;
67
68 struct drm_crtc *crtc;
69 struct drm_connector *con;
70 struct delayed_work local_work;
71 };
72
vmw_fb_setcolreg(unsigned regno,unsigned red,unsigned green,unsigned blue,unsigned transp,struct fb_info * info)73 static int vmw_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
74 unsigned blue, unsigned transp,
75 struct fb_info *info)
76 {
77 struct vmw_fb_par *par = info->par;
78 u32 *pal = par->pseudo_palette;
79
80 if (regno > 15) {
81 DRM_ERROR("Bad regno %u.\n", regno);
82 return 1;
83 }
84
85 switch (par->set_fb->format->depth) {
86 case 24:
87 case 32:
88 pal[regno] = ((red & 0xff00) << 8) |
89 (green & 0xff00) |
90 ((blue & 0xff00) >> 8);
91 break;
92 default:
93 DRM_ERROR("Bad depth %u, bpp %u.\n",
94 par->set_fb->format->depth,
95 par->set_fb->format->cpp[0] * 8);
96 return 1;
97 }
98
99 return 0;
100 }
101
vmw_fb_check_var(struct fb_var_screeninfo * var,struct fb_info * info)102 static int vmw_fb_check_var(struct fb_var_screeninfo *var,
103 struct fb_info *info)
104 {
105 int depth = var->bits_per_pixel;
106 struct vmw_fb_par *par = info->par;
107 struct vmw_private *vmw_priv = par->vmw_priv;
108
109 switch (var->bits_per_pixel) {
110 case 32:
111 depth = (var->transp.length > 0) ? 32 : 24;
112 break;
113 default:
114 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
115 return -EINVAL;
116 }
117
118 switch (depth) {
119 case 24:
120 var->red.offset = 16;
121 var->green.offset = 8;
122 var->blue.offset = 0;
123 var->red.length = 8;
124 var->green.length = 8;
125 var->blue.length = 8;
126 var->transp.length = 0;
127 var->transp.offset = 0;
128 break;
129 case 32:
130 var->red.offset = 16;
131 var->green.offset = 8;
132 var->blue.offset = 0;
133 var->red.length = 8;
134 var->green.length = 8;
135 var->blue.length = 8;
136 var->transp.length = 8;
137 var->transp.offset = 24;
138 break;
139 default:
140 DRM_ERROR("Bad depth %u.\n", depth);
141 return -EINVAL;
142 }
143
144 if ((var->xoffset + var->xres) > par->max_width ||
145 (var->yoffset + var->yres) > par->max_height) {
146 DRM_ERROR("Requested geom can not fit in framebuffer\n");
147 return -EINVAL;
148 }
149
150 if (!vmw_kms_validate_mode_vram(vmw_priv,
151 var->xres * var->bits_per_pixel/8,
152 var->yoffset + var->yres)) {
153 DRM_ERROR("Requested geom can not fit in framebuffer\n");
154 return -EINVAL;
155 }
156
157 return 0;
158 }
159
vmw_fb_blank(int blank,struct fb_info * info)160 static int vmw_fb_blank(int blank, struct fb_info *info)
161 {
162 return 0;
163 }
164
165 /**
166 * vmw_fb_dirty_flush - flush dirty regions to the kms framebuffer
167 *
168 * @work: The struct work_struct associated with this task.
169 *
170 * This function flushes the dirty regions of the vmalloc framebuffer to the
171 * kms framebuffer, and if the kms framebuffer is visible, also updated the
172 * corresponding displays. Note that this function runs even if the kms
173 * framebuffer is not bound to a crtc and thus not visible, but it's turned
174 * off during hibernation using the par->dirty.active bool.
175 */
vmw_fb_dirty_flush(struct work_struct * work)176 static void vmw_fb_dirty_flush(struct work_struct *work)
177 {
178 struct vmw_fb_par *par = container_of(work, struct vmw_fb_par,
179 local_work.work);
180 struct vmw_private *vmw_priv = par->vmw_priv;
181 struct fb_info *info = vmw_priv->fb_info;
182 unsigned long irq_flags;
183 s32 dst_x1, dst_x2, dst_y1, dst_y2, w = 0, h = 0;
184 u32 cpp, max_x, max_y;
185 struct drm_clip_rect clip;
186 struct drm_framebuffer *cur_fb;
187 u8 *src_ptr, *dst_ptr;
188 struct vmw_buffer_object *vbo = par->vmw_bo;
189 void *virtual;
190
191 if (!READ_ONCE(par->dirty.active))
192 return;
193
194 mutex_lock(&par->bo_mutex);
195 cur_fb = par->set_fb;
196 if (!cur_fb)
197 goto out_unlock;
198
199 (void) ttm_bo_reserve(&vbo->base, false, false, NULL);
200 virtual = vmw_bo_map_and_cache(vbo);
201 if (!virtual)
202 goto out_unreserve;
203
204 spin_lock_irqsave(&par->dirty.lock, irq_flags);
205 if (!par->dirty.active) {
206 spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
207 goto out_unreserve;
208 }
209
210 /*
211 * Handle panning when copying from vmalloc to framebuffer.
212 * Clip dirty area to framebuffer.
213 */
214 cpp = cur_fb->format->cpp[0];
215 max_x = par->fb_x + cur_fb->width;
216 max_y = par->fb_y + cur_fb->height;
217
218 dst_x1 = par->dirty.x1 - par->fb_x;
219 dst_y1 = par->dirty.y1 - par->fb_y;
220 dst_x1 = max_t(s32, dst_x1, 0);
221 dst_y1 = max_t(s32, dst_y1, 0);
222
223 dst_x2 = par->dirty.x2 - par->fb_x;
224 dst_y2 = par->dirty.y2 - par->fb_y;
225 dst_x2 = min_t(s32, dst_x2, max_x);
226 dst_y2 = min_t(s32, dst_y2, max_y);
227 w = dst_x2 - dst_x1;
228 h = dst_y2 - dst_y1;
229 w = max_t(s32, 0, w);
230 h = max_t(s32, 0, h);
231
232 par->dirty.x1 = par->dirty.x2 = 0;
233 par->dirty.y1 = par->dirty.y2 = 0;
234 spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
235
236 if (w && h) {
237 dst_ptr = (u8 *)virtual +
238 (dst_y1 * par->set_fb->pitches[0] + dst_x1 * cpp);
239 src_ptr = (u8 *)par->vmalloc +
240 ((dst_y1 + par->fb_y) * info->fix.line_length +
241 (dst_x1 + par->fb_x) * cpp);
242
243 while (h-- > 0) {
244 memcpy(dst_ptr, src_ptr, w*cpp);
245 dst_ptr += par->set_fb->pitches[0];
246 src_ptr += info->fix.line_length;
247 }
248
249 clip.x1 = dst_x1;
250 clip.x2 = dst_x2;
251 clip.y1 = dst_y1;
252 clip.y2 = dst_y2;
253 }
254
255 out_unreserve:
256 ttm_bo_unreserve(&vbo->base);
257 if (w && h) {
258 WARN_ON_ONCE(par->set_fb->funcs->dirty(cur_fb, NULL, 0, 0,
259 &clip, 1));
260 vmw_cmd_flush(vmw_priv, false);
261 }
262 out_unlock:
263 mutex_unlock(&par->bo_mutex);
264 }
265
vmw_fb_dirty_mark(struct vmw_fb_par * par,unsigned x1,unsigned y1,unsigned width,unsigned height)266 static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
267 unsigned x1, unsigned y1,
268 unsigned width, unsigned height)
269 {
270 unsigned long flags;
271 unsigned x2 = x1 + width;
272 unsigned y2 = y1 + height;
273
274 spin_lock_irqsave(&par->dirty.lock, flags);
275 if (par->dirty.x1 == par->dirty.x2) {
276 par->dirty.x1 = x1;
277 par->dirty.y1 = y1;
278 par->dirty.x2 = x2;
279 par->dirty.y2 = y2;
280 /* if we are active start the dirty work
281 * we share the work with the defio system */
282 if (par->dirty.active)
283 schedule_delayed_work(&par->local_work,
284 VMW_DIRTY_DELAY);
285 } else {
286 if (x1 < par->dirty.x1)
287 par->dirty.x1 = x1;
288 if (y1 < par->dirty.y1)
289 par->dirty.y1 = y1;
290 if (x2 > par->dirty.x2)
291 par->dirty.x2 = x2;
292 if (y2 > par->dirty.y2)
293 par->dirty.y2 = y2;
294 }
295 spin_unlock_irqrestore(&par->dirty.lock, flags);
296 }
297
vmw_fb_pan_display(struct fb_var_screeninfo * var,struct fb_info * info)298 static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
299 struct fb_info *info)
300 {
301 struct vmw_fb_par *par = info->par;
302
303 if ((var->xoffset + var->xres) > var->xres_virtual ||
304 (var->yoffset + var->yres) > var->yres_virtual) {
305 DRM_ERROR("Requested panning can not fit in framebuffer\n");
306 return -EINVAL;
307 }
308
309 mutex_lock(&par->bo_mutex);
310 par->fb_x = var->xoffset;
311 par->fb_y = var->yoffset;
312 if (par->set_fb)
313 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y, par->set_fb->width,
314 par->set_fb->height);
315 mutex_unlock(&par->bo_mutex);
316
317 return 0;
318 }
319
vmw_deferred_io(struct fb_info * info,struct list_head * pagereflist)320 static void vmw_deferred_io(struct fb_info *info, struct list_head *pagereflist)
321 {
322 struct vmw_fb_par *par = info->par;
323 unsigned long start, end, min, max;
324 unsigned long flags;
325 struct fb_deferred_io_pageref *pageref;
326 int y1, y2;
327
328 min = ULONG_MAX;
329 max = 0;
330 list_for_each_entry(pageref, pagereflist, list) {
331 start = pageref->offset;
332 end = start + PAGE_SIZE - 1;
333 min = min(min, start);
334 max = max(max, end);
335 }
336
337 if (min < max) {
338 y1 = min / info->fix.line_length;
339 y2 = (max / info->fix.line_length) + 1;
340
341 spin_lock_irqsave(&par->dirty.lock, flags);
342 par->dirty.x1 = 0;
343 par->dirty.y1 = y1;
344 par->dirty.x2 = info->var.xres;
345 par->dirty.y2 = y2;
346 spin_unlock_irqrestore(&par->dirty.lock, flags);
347
348 /*
349 * Since we've already waited on this work once, try to
350 * execute asap.
351 */
352 cancel_delayed_work(&par->local_work);
353 schedule_delayed_work(&par->local_work, 0);
354 }
355 };
356
357 static struct fb_deferred_io vmw_defio = {
358 .delay = VMW_DIRTY_DELAY,
359 .deferred_io = vmw_deferred_io,
360 };
361
362 /*
363 * Draw code
364 */
365
vmw_fb_fillrect(struct fb_info * info,const struct fb_fillrect * rect)366 static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
367 {
368 cfb_fillrect(info, rect);
369 vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
370 rect->width, rect->height);
371 }
372
vmw_fb_copyarea(struct fb_info * info,const struct fb_copyarea * region)373 static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
374 {
375 cfb_copyarea(info, region);
376 vmw_fb_dirty_mark(info->par, region->dx, region->dy,
377 region->width, region->height);
378 }
379
vmw_fb_imageblit(struct fb_info * info,const struct fb_image * image)380 static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image)
381 {
382 cfb_imageblit(info, image);
383 vmw_fb_dirty_mark(info->par, image->dx, image->dy,
384 image->width, image->height);
385 }
386
387 /*
388 * Bring up code
389 */
390
vmw_fb_create_bo(struct vmw_private * vmw_priv,size_t size,struct vmw_buffer_object ** out)391 static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
392 size_t size, struct vmw_buffer_object **out)
393 {
394 struct vmw_buffer_object *vmw_bo;
395 int ret;
396
397 ret = vmw_bo_create(vmw_priv, size,
398 &vmw_sys_placement,
399 false, false,
400 &vmw_bo_bo_free, &vmw_bo);
401 if (unlikely(ret != 0))
402 return ret;
403
404 *out = vmw_bo;
405
406 return ret;
407 }
408
vmw_fb_compute_depth(struct fb_var_screeninfo * var,int * depth)409 static int vmw_fb_compute_depth(struct fb_var_screeninfo *var,
410 int *depth)
411 {
412 switch (var->bits_per_pixel) {
413 case 32:
414 *depth = (var->transp.length > 0) ? 32 : 24;
415 break;
416 default:
417 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
418 return -EINVAL;
419 }
420
421 return 0;
422 }
423
vmwgfx_set_config_internal(struct drm_mode_set * set)424 static int vmwgfx_set_config_internal(struct drm_mode_set *set)
425 {
426 struct drm_crtc *crtc = set->crtc;
427 struct drm_modeset_acquire_ctx ctx;
428 int ret;
429
430 drm_modeset_acquire_init(&ctx, 0);
431
432 restart:
433 ret = crtc->funcs->set_config(set, &ctx);
434
435 if (ret == -EDEADLK) {
436 drm_modeset_backoff(&ctx);
437 goto restart;
438 }
439
440 drm_modeset_drop_locks(&ctx);
441 drm_modeset_acquire_fini(&ctx);
442
443 return ret;
444 }
445
vmw_fb_kms_detach(struct vmw_fb_par * par,bool detach_bo,bool unref_bo)446 static int vmw_fb_kms_detach(struct vmw_fb_par *par,
447 bool detach_bo,
448 bool unref_bo)
449 {
450 struct drm_framebuffer *cur_fb = par->set_fb;
451 int ret;
452
453 /* Detach the KMS framebuffer from crtcs */
454 if (par->set_mode) {
455 struct drm_mode_set set;
456
457 set.crtc = par->crtc;
458 set.x = 0;
459 set.y = 0;
460 set.mode = NULL;
461 set.fb = NULL;
462 set.num_connectors = 0;
463 set.connectors = &par->con;
464 ret = vmwgfx_set_config_internal(&set);
465 if (ret) {
466 DRM_ERROR("Could not unset a mode.\n");
467 return ret;
468 }
469 drm_mode_destroy(&par->vmw_priv->drm, par->set_mode);
470 par->set_mode = NULL;
471 }
472
473 if (cur_fb) {
474 drm_framebuffer_put(cur_fb);
475 par->set_fb = NULL;
476 }
477
478 if (par->vmw_bo && detach_bo && unref_bo)
479 vmw_bo_unreference(&par->vmw_bo);
480
481 return 0;
482 }
483
vmw_fb_kms_framebuffer(struct fb_info * info)484 static int vmw_fb_kms_framebuffer(struct fb_info *info)
485 {
486 struct drm_mode_fb_cmd2 mode_cmd = {0};
487 struct vmw_fb_par *par = info->par;
488 struct fb_var_screeninfo *var = &info->var;
489 struct drm_framebuffer *cur_fb;
490 struct vmw_framebuffer *vfb;
491 int ret = 0, depth;
492 size_t new_bo_size;
493
494 ret = vmw_fb_compute_depth(var, &depth);
495 if (ret)
496 return ret;
497
498 mode_cmd.width = var->xres;
499 mode_cmd.height = var->yres;
500 mode_cmd.pitches[0] = ((var->bits_per_pixel + 7) / 8) * mode_cmd.width;
501 mode_cmd.pixel_format =
502 drm_mode_legacy_fb_format(var->bits_per_pixel, depth);
503
504 cur_fb = par->set_fb;
505 if (cur_fb && cur_fb->width == mode_cmd.width &&
506 cur_fb->height == mode_cmd.height &&
507 cur_fb->format->format == mode_cmd.pixel_format &&
508 cur_fb->pitches[0] == mode_cmd.pitches[0])
509 return 0;
510
511 /* Need new buffer object ? */
512 new_bo_size = (size_t) mode_cmd.pitches[0] * (size_t) mode_cmd.height;
513 ret = vmw_fb_kms_detach(par,
514 par->bo_size < new_bo_size ||
515 par->bo_size > 2*new_bo_size,
516 true);
517 if (ret)
518 return ret;
519
520 if (!par->vmw_bo) {
521 ret = vmw_fb_create_bo(par->vmw_priv, new_bo_size,
522 &par->vmw_bo);
523 if (ret) {
524 DRM_ERROR("Failed creating a buffer object for "
525 "fbdev.\n");
526 return ret;
527 }
528 par->bo_size = new_bo_size;
529 }
530
531 vfb = vmw_kms_new_framebuffer(par->vmw_priv, par->vmw_bo, NULL,
532 true, &mode_cmd);
533 if (IS_ERR(vfb))
534 return PTR_ERR(vfb);
535
536 par->set_fb = &vfb->base;
537
538 return 0;
539 }
540
vmw_fb_set_par(struct fb_info * info)541 static int vmw_fb_set_par(struct fb_info *info)
542 {
543 struct vmw_fb_par *par = info->par;
544 struct vmw_private *vmw_priv = par->vmw_priv;
545 struct drm_mode_set set;
546 struct fb_var_screeninfo *var = &info->var;
547 struct drm_display_mode new_mode = { DRM_MODE("fb_mode",
548 DRM_MODE_TYPE_DRIVER,
549 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
550 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
551 };
552 struct drm_display_mode *mode;
553 int ret;
554
555 mode = drm_mode_duplicate(&vmw_priv->drm, &new_mode);
556 if (!mode) {
557 DRM_ERROR("Could not create new fb mode.\n");
558 return -ENOMEM;
559 }
560
561 mode->hdisplay = var->xres;
562 mode->vdisplay = var->yres;
563 vmw_guess_mode_timing(mode);
564
565 if (!vmw_kms_validate_mode_vram(vmw_priv,
566 mode->hdisplay *
567 DIV_ROUND_UP(var->bits_per_pixel, 8),
568 mode->vdisplay)) {
569 drm_mode_destroy(&vmw_priv->drm, mode);
570 return -EINVAL;
571 }
572
573 mutex_lock(&par->bo_mutex);
574 ret = vmw_fb_kms_framebuffer(info);
575 if (ret)
576 goto out_unlock;
577
578 par->fb_x = var->xoffset;
579 par->fb_y = var->yoffset;
580
581 set.crtc = par->crtc;
582 set.x = 0;
583 set.y = 0;
584 set.mode = mode;
585 set.fb = par->set_fb;
586 set.num_connectors = 1;
587 set.connectors = &par->con;
588
589 ret = vmwgfx_set_config_internal(&set);
590 if (ret)
591 goto out_unlock;
592
593 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y,
594 par->set_fb->width, par->set_fb->height);
595
596 /* If there already was stuff dirty we wont
597 * schedule a new work, so lets do it now */
598
599 schedule_delayed_work(&par->local_work, 0);
600
601 out_unlock:
602 if (par->set_mode)
603 drm_mode_destroy(&vmw_priv->drm, par->set_mode);
604 par->set_mode = mode;
605
606 mutex_unlock(&par->bo_mutex);
607
608 return ret;
609 }
610
611
612 static const struct fb_ops vmw_fb_ops = {
613 .owner = THIS_MODULE,
614 .fb_check_var = vmw_fb_check_var,
615 .fb_set_par = vmw_fb_set_par,
616 .fb_setcolreg = vmw_fb_setcolreg,
617 .fb_fillrect = vmw_fb_fillrect,
618 .fb_copyarea = vmw_fb_copyarea,
619 .fb_imageblit = vmw_fb_imageblit,
620 .fb_pan_display = vmw_fb_pan_display,
621 .fb_blank = vmw_fb_blank,
622 .fb_mmap = fb_deferred_io_mmap,
623 };
624
vmw_fb_init(struct vmw_private * vmw_priv)625 int vmw_fb_init(struct vmw_private *vmw_priv)
626 {
627 struct device *device = vmw_priv->drm.dev;
628 struct vmw_fb_par *par;
629 struct fb_info *info;
630 unsigned fb_width, fb_height;
631 unsigned int fb_bpp, fb_pitch, fb_size;
632 struct drm_display_mode *init_mode;
633 int ret;
634
635 fb_bpp = 32;
636
637 /* XXX As shouldn't these be as well. */
638 fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
639 fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
640
641 fb_pitch = fb_width * fb_bpp / 8;
642 fb_size = fb_pitch * fb_height;
643
644 info = framebuffer_alloc(sizeof(*par), device);
645 if (!info)
646 return -ENOMEM;
647
648 /*
649 * Par
650 */
651 vmw_priv->fb_info = info;
652 par = info->par;
653 memset(par, 0, sizeof(*par));
654 INIT_DELAYED_WORK(&par->local_work, &vmw_fb_dirty_flush);
655 par->vmw_priv = vmw_priv;
656 par->vmalloc = NULL;
657 par->max_width = fb_width;
658 par->max_height = fb_height;
659
660 ret = vmw_kms_fbdev_init_data(vmw_priv, 0, par->max_width,
661 par->max_height, &par->con,
662 &par->crtc, &init_mode);
663 if (ret)
664 goto err_kms;
665
666 info->var.xres = init_mode->hdisplay;
667 info->var.yres = init_mode->vdisplay;
668
669 /*
670 * Create buffers and alloc memory
671 */
672 par->vmalloc = vzalloc(fb_size);
673 if (unlikely(par->vmalloc == NULL)) {
674 ret = -ENOMEM;
675 goto err_free;
676 }
677
678 /*
679 * Fixed and var
680 */
681 strcpy(info->fix.id, "svgadrmfb");
682 info->fix.type = FB_TYPE_PACKED_PIXELS;
683 info->fix.visual = FB_VISUAL_TRUECOLOR;
684 info->fix.type_aux = 0;
685 info->fix.xpanstep = 1; /* doing it in hw */
686 info->fix.ypanstep = 1; /* doing it in hw */
687 info->fix.ywrapstep = 0;
688 info->fix.accel = FB_ACCEL_NONE;
689 info->fix.line_length = fb_pitch;
690
691 info->fix.smem_start = 0;
692 info->fix.smem_len = fb_size;
693
694 info->pseudo_palette = par->pseudo_palette;
695 info->screen_base = (char __iomem *)par->vmalloc;
696 info->screen_size = fb_size;
697
698 info->fbops = &vmw_fb_ops;
699
700 /* 24 depth per default */
701 info->var.red.offset = 16;
702 info->var.green.offset = 8;
703 info->var.blue.offset = 0;
704 info->var.red.length = 8;
705 info->var.green.length = 8;
706 info->var.blue.length = 8;
707 info->var.transp.offset = 0;
708 info->var.transp.length = 0;
709
710 info->var.xres_virtual = fb_width;
711 info->var.yres_virtual = fb_height;
712 info->var.bits_per_pixel = fb_bpp;
713 info->var.xoffset = 0;
714 info->var.yoffset = 0;
715 info->var.activate = FB_ACTIVATE_NOW;
716 info->var.height = -1;
717 info->var.width = -1;
718
719 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
720 info->apertures = alloc_apertures(1);
721 if (!info->apertures) {
722 ret = -ENOMEM;
723 goto err_aper;
724 }
725 info->apertures->ranges[0].base = vmw_priv->vram_start;
726 info->apertures->ranges[0].size = vmw_priv->vram_size;
727
728 /*
729 * Dirty & Deferred IO
730 */
731 par->dirty.x1 = par->dirty.x2 = 0;
732 par->dirty.y1 = par->dirty.y2 = 0;
733 par->dirty.active = true;
734 spin_lock_init(&par->dirty.lock);
735 mutex_init(&par->bo_mutex);
736 info->fbdefio = &vmw_defio;
737 fb_deferred_io_init(info);
738
739 ret = register_framebuffer(info);
740 if (unlikely(ret != 0))
741 goto err_defio;
742
743 vmw_fb_set_par(info);
744
745 return 0;
746
747 err_defio:
748 fb_deferred_io_cleanup(info);
749 err_aper:
750 err_free:
751 vfree(par->vmalloc);
752 err_kms:
753 framebuffer_release(info);
754 vmw_priv->fb_info = NULL;
755
756 return ret;
757 }
758
vmw_fb_close(struct vmw_private * vmw_priv)759 int vmw_fb_close(struct vmw_private *vmw_priv)
760 {
761 struct fb_info *info;
762 struct vmw_fb_par *par;
763
764 if (!vmw_priv->fb_info)
765 return 0;
766
767 info = vmw_priv->fb_info;
768 par = info->par;
769
770 /* ??? order */
771 fb_deferred_io_cleanup(info);
772 cancel_delayed_work_sync(&par->local_work);
773 unregister_framebuffer(info);
774
775 mutex_lock(&par->bo_mutex);
776 (void) vmw_fb_kms_detach(par, true, true);
777 mutex_unlock(&par->bo_mutex);
778
779 vfree(par->vmalloc);
780 framebuffer_release(info);
781
782 return 0;
783 }
784
vmw_fb_off(struct vmw_private * vmw_priv)785 int vmw_fb_off(struct vmw_private *vmw_priv)
786 {
787 struct fb_info *info;
788 struct vmw_fb_par *par;
789 unsigned long flags;
790
791 if (!vmw_priv->fb_info)
792 return -EINVAL;
793
794 info = vmw_priv->fb_info;
795 par = info->par;
796
797 spin_lock_irqsave(&par->dirty.lock, flags);
798 par->dirty.active = false;
799 spin_unlock_irqrestore(&par->dirty.lock, flags);
800
801 flush_delayed_work(&info->deferred_work);
802 flush_delayed_work(&par->local_work);
803
804 return 0;
805 }
806
vmw_fb_on(struct vmw_private * vmw_priv)807 int vmw_fb_on(struct vmw_private *vmw_priv)
808 {
809 struct fb_info *info;
810 struct vmw_fb_par *par;
811 unsigned long flags;
812
813 if (!vmw_priv->fb_info)
814 return -EINVAL;
815
816 info = vmw_priv->fb_info;
817 par = info->par;
818
819 spin_lock_irqsave(&par->dirty.lock, flags);
820 par->dirty.active = true;
821 spin_unlock_irqrestore(&par->dirty.lock, flags);
822
823 /*
824 * Need to reschedule a dirty update, because otherwise that's
825 * only done in dirty_mark() if the previous coalesced
826 * dirty region was empty.
827 */
828 schedule_delayed_work(&par->local_work, 0);
829
830 return 0;
831 }
832
