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[mirror_ubuntu-disco-kernel.git] / drivers / gpu / drm / vmwgfx / vmwgfx_fb.c
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/export.h>
30
31 #include <drm/drmP.h>
32 #include "vmwgfx_drv.h"
33 #include "vmwgfx_kms.h"
34
35 #include <drm/ttm/ttm_placement.h>
36
37 #define VMW_DIRTY_DELAY (HZ / 30)
38
39 struct vmw_fb_par {
40 struct vmw_private *vmw_priv;
41
42 void *vmalloc;
43
44 struct mutex bo_mutex;
45 struct vmw_dma_buffer *vmw_bo;
46 unsigned bo_size;
47 struct drm_framebuffer *set_fb;
48 struct drm_display_mode *set_mode;
49 u32 fb_x;
50 u32 fb_y;
51 bool bo_iowrite;
52
53 u32 pseudo_palette[17];
54
55 unsigned max_width;
56 unsigned max_height;
57
58 struct {
59 spinlock_t lock;
60 bool active;
61 unsigned x1;
62 unsigned y1;
63 unsigned x2;
64 unsigned y2;
65 } dirty;
66
67 struct drm_crtc *crtc;
68 struct drm_connector *con;
69 struct delayed_work local_work;
70 };
71
72 static int vmw_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
73 unsigned blue, unsigned transp,
74 struct fb_info *info)
75 {
76 struct vmw_fb_par *par = info->par;
77 u32 *pal = par->pseudo_palette;
78
79 if (regno > 15) {
80 DRM_ERROR("Bad regno %u.\n", regno);
81 return 1;
82 }
83
84 switch (par->set_fb->format->depth) {
85 case 24:
86 case 32:
87 pal[regno] = ((red & 0xff00) << 8) |
88 (green & 0xff00) |
89 ((blue & 0xff00) >> 8);
90 break;
91 default:
92 DRM_ERROR("Bad depth %u, bpp %u.\n",
93 par->set_fb->format->depth,
94 par->set_fb->format->cpp[0] * 8);
95 return 1;
96 }
97
98 return 0;
99 }
100
101 static int vmw_fb_check_var(struct fb_var_screeninfo *var,
102 struct fb_info *info)
103 {
104 int depth = var->bits_per_pixel;
105 struct vmw_fb_par *par = info->par;
106 struct vmw_private *vmw_priv = par->vmw_priv;
107
108 switch (var->bits_per_pixel) {
109 case 32:
110 depth = (var->transp.length > 0) ? 32 : 24;
111 break;
112 default:
113 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
114 return -EINVAL;
115 }
116
117 switch (depth) {
118 case 24:
119 var->red.offset = 16;
120 var->green.offset = 8;
121 var->blue.offset = 0;
122 var->red.length = 8;
123 var->green.length = 8;
124 var->blue.length = 8;
125 var->transp.length = 0;
126 var->transp.offset = 0;
127 break;
128 case 32:
129 var->red.offset = 16;
130 var->green.offset = 8;
131 var->blue.offset = 0;
132 var->red.length = 8;
133 var->green.length = 8;
134 var->blue.length = 8;
135 var->transp.length = 8;
136 var->transp.offset = 24;
137 break;
138 default:
139 DRM_ERROR("Bad depth %u.\n", depth);
140 return -EINVAL;
141 }
142
143 if ((var->xoffset + var->xres) > par->max_width ||
144 (var->yoffset + var->yres) > par->max_height) {
145 DRM_ERROR("Requested geom can not fit in framebuffer\n");
146 return -EINVAL;
147 }
148
149 if (!vmw_kms_validate_mode_vram(vmw_priv,
150 var->xres * var->bits_per_pixel/8,
151 var->yoffset + var->yres)) {
152 DRM_ERROR("Requested geom can not fit in framebuffer\n");
153 return -EINVAL;
154 }
155
156 return 0;
157 }
158
159 static int vmw_fb_blank(int blank, struct fb_info *info)
160 {
161 return 0;
162 }
163
164 /**
165 * vmw_fb_dirty_flush - flush dirty regions to the kms framebuffer
166 *
167 * @work: The struct work_struct associated with this task.
168 *
169 * This function flushes the dirty regions of the vmalloc framebuffer to the
170 * kms framebuffer, and if the kms framebuffer is visible, also updated the
171 * corresponding displays. Note that this function runs even if the kms
172 * framebuffer is not bound to a crtc and thus not visible, but it's turned
173 * off during hibernation using the par->dirty.active bool.
174 */
175 static void vmw_fb_dirty_flush(struct work_struct *work)
176 {
177 struct vmw_fb_par *par = container_of(work, struct vmw_fb_par,
178 local_work.work);
179 struct vmw_private *vmw_priv = par->vmw_priv;
180 struct fb_info *info = vmw_priv->fb_info;
181 unsigned long irq_flags;
182 s32 dst_x1, dst_x2, dst_y1, dst_y2, w = 0, h = 0;
183 u32 cpp, max_x, max_y;
184 struct drm_clip_rect clip;
185 struct drm_framebuffer *cur_fb;
186 u8 *src_ptr, *dst_ptr;
187 struct vmw_dma_buffer *vbo = par->vmw_bo;
188 void *virtual;
189
190 if (!READ_ONCE(par->dirty.active))
191 return;
192
193 mutex_lock(&par->bo_mutex);
194 cur_fb = par->set_fb;
195 if (!cur_fb)
196 goto out_unlock;
197
198 (void) ttm_read_lock(&vmw_priv->reservation_sem, false);
199 (void) ttm_bo_reserve(&vbo->base, false, false, NULL);
200 virtual = vmw_dma_buffer_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 ttm_read_unlock(&vmw_priv->reservation_sem);
258 if (w && h) {
259 WARN_ON_ONCE(par->set_fb->funcs->dirty(cur_fb, NULL, 0, 0,
260 &clip, 1));
261 vmw_fifo_flush(vmw_priv, false);
262 }
263 out_unlock:
264 mutex_unlock(&par->bo_mutex);
265 }
266
267 static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
268 unsigned x1, unsigned y1,
269 unsigned width, unsigned height)
270 {
271 unsigned long flags;
272 unsigned x2 = x1 + width;
273 unsigned y2 = y1 + height;
274
275 spin_lock_irqsave(&par->dirty.lock, flags);
276 if (par->dirty.x1 == par->dirty.x2) {
277 par->dirty.x1 = x1;
278 par->dirty.y1 = y1;
279 par->dirty.x2 = x2;
280 par->dirty.y2 = y2;
281 /* if we are active start the dirty work
282 * we share the work with the defio system */
283 if (par->dirty.active)
284 schedule_delayed_work(&par->local_work,
285 VMW_DIRTY_DELAY);
286 } else {
287 if (x1 < par->dirty.x1)
288 par->dirty.x1 = x1;
289 if (y1 < par->dirty.y1)
290 par->dirty.y1 = y1;
291 if (x2 > par->dirty.x2)
292 par->dirty.x2 = x2;
293 if (y2 > par->dirty.y2)
294 par->dirty.y2 = y2;
295 }
296 spin_unlock_irqrestore(&par->dirty.lock, flags);
297 }
298
299 static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
300 struct fb_info *info)
301 {
302 struct vmw_fb_par *par = info->par;
303
304 if ((var->xoffset + var->xres) > var->xres_virtual ||
305 (var->yoffset + var->yres) > var->yres_virtual) {
306 DRM_ERROR("Requested panning can not fit in framebuffer\n");
307 return -EINVAL;
308 }
309
310 mutex_lock(&par->bo_mutex);
311 par->fb_x = var->xoffset;
312 par->fb_y = var->yoffset;
313 if (par->set_fb)
314 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y, par->set_fb->width,
315 par->set_fb->height);
316 mutex_unlock(&par->bo_mutex);
317
318 return 0;
319 }
320
321 static void vmw_deferred_io(struct fb_info *info,
322 struct list_head *pagelist)
323 {
324 struct vmw_fb_par *par = info->par;
325 unsigned long start, end, min, max;
326 unsigned long flags;
327 struct page *page;
328 int y1, y2;
329
330 min = ULONG_MAX;
331 max = 0;
332 list_for_each_entry(page, pagelist, lru) {
333 start = page->index << PAGE_SHIFT;
334 end = start + PAGE_SIZE - 1;
335 min = min(min, start);
336 max = max(max, end);
337 }
338
339 if (min < max) {
340 y1 = min / info->fix.line_length;
341 y2 = (max / info->fix.line_length) + 1;
342
343 spin_lock_irqsave(&par->dirty.lock, flags);
344 par->dirty.x1 = 0;
345 par->dirty.y1 = y1;
346 par->dirty.x2 = info->var.xres;
347 par->dirty.y2 = y2;
348 spin_unlock_irqrestore(&par->dirty.lock, flags);
349
350 /*
351 * Since we've already waited on this work once, try to
352 * execute asap.
353 */
354 cancel_delayed_work(&par->local_work);
355 schedule_delayed_work(&par->local_work, 0);
356 }
357 };
358
359 static struct fb_deferred_io vmw_defio = {
360 .delay = VMW_DIRTY_DELAY,
361 .deferred_io = vmw_deferred_io,
362 };
363
364 /*
365 * Draw code
366 */
367
368 static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
369 {
370 cfb_fillrect(info, rect);
371 vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
372 rect->width, rect->height);
373 }
374
375 static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
376 {
377 cfb_copyarea(info, region);
378 vmw_fb_dirty_mark(info->par, region->dx, region->dy,
379 region->width, region->height);
380 }
381
382 static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image)
383 {
384 cfb_imageblit(info, image);
385 vmw_fb_dirty_mark(info->par, image->dx, image->dy,
386 image->width, image->height);
387 }
388
389 /*
390 * Bring up code
391 */
392
393 static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
394 size_t size, struct vmw_dma_buffer **out)
395 {
396 struct vmw_dma_buffer *vmw_bo;
397 int ret;
398
399 (void) ttm_write_lock(&vmw_priv->reservation_sem, false);
400
401 vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
402 if (!vmw_bo) {
403 ret = -ENOMEM;
404 goto err_unlock;
405 }
406
407 ret = vmw_dmabuf_init(vmw_priv, vmw_bo, size,
408 &vmw_sys_placement,
409 false,
410 &vmw_dmabuf_bo_free);
411 if (unlikely(ret != 0))
412 goto err_unlock; /* init frees the buffer on failure */
413
414 *out = vmw_bo;
415 ttm_write_unlock(&vmw_priv->reservation_sem);
416
417 return 0;
418
419 err_unlock:
420 ttm_write_unlock(&vmw_priv->reservation_sem);
421 return ret;
422 }
423
424 static int vmw_fb_compute_depth(struct fb_var_screeninfo *var,
425 int *depth)
426 {
427 switch (var->bits_per_pixel) {
428 case 32:
429 *depth = (var->transp.length > 0) ? 32 : 24;
430 break;
431 default:
432 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
433 return -EINVAL;
434 }
435
436 return 0;
437 }
438
439 static int vmwgfx_set_config_internal(struct drm_mode_set *set)
440 {
441 struct drm_crtc *crtc = set->crtc;
442 struct drm_modeset_acquire_ctx ctx;
443 int ret;
444
445 drm_modeset_acquire_init(&ctx, 0);
446
447 restart:
448 ret = crtc->funcs->set_config(set, &ctx);
449
450 if (ret == -EDEADLK) {
451 drm_modeset_backoff(&ctx);
452 goto restart;
453 }
454
455 drm_modeset_drop_locks(&ctx);
456 drm_modeset_acquire_fini(&ctx);
457
458 return ret;
459 }
460
461 static int vmw_fb_kms_detach(struct vmw_fb_par *par,
462 bool detach_bo,
463 bool unref_bo)
464 {
465 struct drm_framebuffer *cur_fb = par->set_fb;
466 int ret;
467
468 /* Detach the KMS framebuffer from crtcs */
469 if (par->set_mode) {
470 struct drm_mode_set set;
471
472 set.crtc = par->crtc;
473 set.x = 0;
474 set.y = 0;
475 set.mode = NULL;
476 set.fb = NULL;
477 set.num_connectors = 0;
478 set.connectors = &par->con;
479 ret = vmwgfx_set_config_internal(&set);
480 if (ret) {
481 DRM_ERROR("Could not unset a mode.\n");
482 return ret;
483 }
484 drm_mode_destroy(par->vmw_priv->dev, par->set_mode);
485 par->set_mode = NULL;
486 }
487
488 if (cur_fb) {
489 drm_framebuffer_put(cur_fb);
490 par->set_fb = NULL;
491 }
492
493 if (par->vmw_bo && detach_bo && unref_bo)
494 vmw_dmabuf_unreference(&par->vmw_bo);
495
496 return 0;
497 }
498
499 static int vmw_fb_kms_framebuffer(struct fb_info *info)
500 {
501 struct drm_mode_fb_cmd2 mode_cmd;
502 struct vmw_fb_par *par = info->par;
503 struct fb_var_screeninfo *var = &info->var;
504 struct drm_framebuffer *cur_fb;
505 struct vmw_framebuffer *vfb;
506 int ret = 0, depth;
507 size_t new_bo_size;
508
509 ret = vmw_fb_compute_depth(var, &depth);
510 if (ret)
511 return ret;
512
513 mode_cmd.width = var->xres;
514 mode_cmd.height = var->yres;
515 mode_cmd.pitches[0] = ((var->bits_per_pixel + 7) / 8) * mode_cmd.width;
516 mode_cmd.pixel_format =
517 drm_mode_legacy_fb_format(var->bits_per_pixel, depth);
518
519 cur_fb = par->set_fb;
520 if (cur_fb && cur_fb->width == mode_cmd.width &&
521 cur_fb->height == mode_cmd.height &&
522 cur_fb->format->format == mode_cmd.pixel_format &&
523 cur_fb->pitches[0] == mode_cmd.pitches[0])
524 return 0;
525
526 /* Need new buffer object ? */
527 new_bo_size = (size_t) mode_cmd.pitches[0] * (size_t) mode_cmd.height;
528 ret = vmw_fb_kms_detach(par,
529 par->bo_size < new_bo_size ||
530 par->bo_size > 2*new_bo_size,
531 true);
532 if (ret)
533 return ret;
534
535 if (!par->vmw_bo) {
536 ret = vmw_fb_create_bo(par->vmw_priv, new_bo_size,
537 &par->vmw_bo);
538 if (ret) {
539 DRM_ERROR("Failed creating a buffer object for "
540 "fbdev.\n");
541 return ret;
542 }
543 par->bo_size = new_bo_size;
544 }
545
546 vfb = vmw_kms_new_framebuffer(par->vmw_priv, par->vmw_bo, NULL,
547 true, &mode_cmd);
548 if (IS_ERR(vfb))
549 return PTR_ERR(vfb);
550
551 par->set_fb = &vfb->base;
552
553 return 0;
554 }
555
556 static int vmw_fb_set_par(struct fb_info *info)
557 {
558 struct vmw_fb_par *par = info->par;
559 struct vmw_private *vmw_priv = par->vmw_priv;
560 struct drm_mode_set set;
561 struct fb_var_screeninfo *var = &info->var;
562 struct drm_display_mode new_mode = { DRM_MODE("fb_mode",
563 DRM_MODE_TYPE_DRIVER,
564 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
565 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
566 };
567 struct drm_display_mode *old_mode;
568 struct drm_display_mode *mode;
569 int ret;
570
571 old_mode = par->set_mode;
572 mode = drm_mode_duplicate(vmw_priv->dev, &new_mode);
573 if (!mode) {
574 DRM_ERROR("Could not create new fb mode.\n");
575 return -ENOMEM;
576 }
577
578 mode->hdisplay = var->xres;
579 mode->vdisplay = var->yres;
580 vmw_guess_mode_timing(mode);
581
582 if (old_mode && drm_mode_equal(old_mode, mode)) {
583 drm_mode_destroy(vmw_priv->dev, mode);
584 mode = old_mode;
585 old_mode = NULL;
586 } else if (!vmw_kms_validate_mode_vram(vmw_priv,
587 mode->hdisplay *
588 DIV_ROUND_UP(var->bits_per_pixel, 8),
589 mode->vdisplay)) {
590 drm_mode_destroy(vmw_priv->dev, mode);
591 return -EINVAL;
592 }
593
594 mutex_lock(&par->bo_mutex);
595 ret = vmw_fb_kms_framebuffer(info);
596 if (ret)
597 goto out_unlock;
598
599 par->fb_x = var->xoffset;
600 par->fb_y = var->yoffset;
601
602 set.crtc = par->crtc;
603 set.x = 0;
604 set.y = 0;
605 set.mode = mode;
606 set.fb = par->set_fb;
607 set.num_connectors = 1;
608 set.connectors = &par->con;
609
610 ret = vmwgfx_set_config_internal(&set);
611 if (ret)
612 goto out_unlock;
613
614 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y,
615 par->set_fb->width, par->set_fb->height);
616
617 /* If there already was stuff dirty we wont
618 * schedule a new work, so lets do it now */
619
620 schedule_delayed_work(&par->local_work, 0);
621
622 out_unlock:
623 if (old_mode)
624 drm_mode_destroy(vmw_priv->dev, old_mode);
625 par->set_mode = mode;
626
627 mutex_unlock(&par->bo_mutex);
628
629 return ret;
630 }
631
632
633 static struct fb_ops vmw_fb_ops = {
634 .owner = THIS_MODULE,
635 .fb_check_var = vmw_fb_check_var,
636 .fb_set_par = vmw_fb_set_par,
637 .fb_setcolreg = vmw_fb_setcolreg,
638 .fb_fillrect = vmw_fb_fillrect,
639 .fb_copyarea = vmw_fb_copyarea,
640 .fb_imageblit = vmw_fb_imageblit,
641 .fb_pan_display = vmw_fb_pan_display,
642 .fb_blank = vmw_fb_blank,
643 };
644
645 int vmw_fb_init(struct vmw_private *vmw_priv)
646 {
647 struct device *device = &vmw_priv->dev->pdev->dev;
648 struct vmw_fb_par *par;
649 struct fb_info *info;
650 unsigned fb_width, fb_height;
651 unsigned fb_bpp, fb_depth, fb_offset, fb_pitch, fb_size;
652 struct drm_display_mode *init_mode;
653 int ret;
654
655 fb_bpp = 32;
656 fb_depth = 24;
657
658 /* XXX As shouldn't these be as well. */
659 fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
660 fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
661
662 fb_pitch = fb_width * fb_bpp / 8;
663 fb_size = fb_pitch * fb_height;
664 fb_offset = vmw_read(vmw_priv, SVGA_REG_FB_OFFSET);
665
666 info = framebuffer_alloc(sizeof(*par), device);
667 if (!info)
668 return -ENOMEM;
669
670 /*
671 * Par
672 */
673 vmw_priv->fb_info = info;
674 par = info->par;
675 memset(par, 0, sizeof(*par));
676 INIT_DELAYED_WORK(&par->local_work, &vmw_fb_dirty_flush);
677 par->vmw_priv = vmw_priv;
678 par->vmalloc = NULL;
679 par->max_width = fb_width;
680 par->max_height = fb_height;
681
682 ret = vmw_kms_fbdev_init_data(vmw_priv, 0, par->max_width,
683 par->max_height, &par->con,
684 &par->crtc, &init_mode);
685 if (ret)
686 goto err_kms;
687
688 info->var.xres = init_mode->hdisplay;
689 info->var.yres = init_mode->vdisplay;
690
691 /*
692 * Create buffers and alloc memory
693 */
694 par->vmalloc = vzalloc(fb_size);
695 if (unlikely(par->vmalloc == NULL)) {
696 ret = -ENOMEM;
697 goto err_free;
698 }
699
700 /*
701 * Fixed and var
702 */
703 strcpy(info->fix.id, "svgadrmfb");
704 info->fix.type = FB_TYPE_PACKED_PIXELS;
705 info->fix.visual = FB_VISUAL_TRUECOLOR;
706 info->fix.type_aux = 0;
707 info->fix.xpanstep = 1; /* doing it in hw */
708 info->fix.ypanstep = 1; /* doing it in hw */
709 info->fix.ywrapstep = 0;
710 info->fix.accel = FB_ACCEL_NONE;
711 info->fix.line_length = fb_pitch;
712
713 info->fix.smem_start = 0;
714 info->fix.smem_len = fb_size;
715
716 info->pseudo_palette = par->pseudo_palette;
717 info->screen_base = (char __iomem *)par->vmalloc;
718 info->screen_size = fb_size;
719
720 info->fbops = &vmw_fb_ops;
721
722 /* 24 depth per default */
723 info->var.red.offset = 16;
724 info->var.green.offset = 8;
725 info->var.blue.offset = 0;
726 info->var.red.length = 8;
727 info->var.green.length = 8;
728 info->var.blue.length = 8;
729 info->var.transp.offset = 0;
730 info->var.transp.length = 0;
731
732 info->var.xres_virtual = fb_width;
733 info->var.yres_virtual = fb_height;
734 info->var.bits_per_pixel = fb_bpp;
735 info->var.xoffset = 0;
736 info->var.yoffset = 0;
737 info->var.activate = FB_ACTIVATE_NOW;
738 info->var.height = -1;
739 info->var.width = -1;
740
741 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
742 info->apertures = alloc_apertures(1);
743 if (!info->apertures) {
744 ret = -ENOMEM;
745 goto err_aper;
746 }
747 info->apertures->ranges[0].base = vmw_priv->vram_start;
748 info->apertures->ranges[0].size = vmw_priv->vram_size;
749
750 /*
751 * Dirty & Deferred IO
752 */
753 par->dirty.x1 = par->dirty.x2 = 0;
754 par->dirty.y1 = par->dirty.y2 = 0;
755 par->dirty.active = true;
756 spin_lock_init(&par->dirty.lock);
757 mutex_init(&par->bo_mutex);
758 info->fbdefio = &vmw_defio;
759 fb_deferred_io_init(info);
760
761 ret = register_framebuffer(info);
762 if (unlikely(ret != 0))
763 goto err_defio;
764
765 vmw_fb_set_par(info);
766
767 return 0;
768
769 err_defio:
770 fb_deferred_io_cleanup(info);
771 err_aper:
772 err_free:
773 vfree(par->vmalloc);
774 err_kms:
775 framebuffer_release(info);
776 vmw_priv->fb_info = NULL;
777
778 return ret;
779 }
780
781 int vmw_fb_close(struct vmw_private *vmw_priv)
782 {
783 struct fb_info *info;
784 struct vmw_fb_par *par;
785
786 if (!vmw_priv->fb_info)
787 return 0;
788
789 info = vmw_priv->fb_info;
790 par = info->par;
791
792 /* ??? order */
793 fb_deferred_io_cleanup(info);
794 cancel_delayed_work_sync(&par->local_work);
795 unregister_framebuffer(info);
796
797 mutex_lock(&par->bo_mutex);
798 (void) vmw_fb_kms_detach(par, true, true);
799 mutex_unlock(&par->bo_mutex);
800
801 vfree(par->vmalloc);
802 framebuffer_release(info);
803
804 return 0;
805 }
806
807 int vmw_fb_off(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 = false;
821 spin_unlock_irqrestore(&par->dirty.lock, flags);
822
823 flush_delayed_work(&info->deferred_work);
824 flush_delayed_work(&par->local_work);
825
826 return 0;
827 }
828
829 int vmw_fb_on(struct vmw_private *vmw_priv)
830 {
831 struct fb_info *info;
832 struct vmw_fb_par *par;
833 unsigned long flags;
834
835 if (!vmw_priv->fb_info)
836 return -EINVAL;
837
838 info = vmw_priv->fb_info;
839 par = info->par;
840
841 spin_lock_irqsave(&par->dirty.lock, flags);
842 par->dirty.active = true;
843 spin_unlock_irqrestore(&par->dirty.lock, flags);
844
845 /*
846 * Need to reschedule a dirty update, because otherwise that's
847 * only done in dirty_mark() if the previous coalesced
848 * dirty region was empty.
849 */
850 schedule_delayed_work(&par->local_work, 0);
851
852 return 0;
853 }
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