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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/pci.h>
30
31#include <drm/drm_fourcc.h>
32#include <drm/ttm/ttm_placement.h>
33
34#include "vmwgfx_drv.h"
35#include "vmwgfx_kms.h"
36
37#define VMW_DIRTY_DELAY (HZ / 30)
38
39struct vmw_fb_par {
40 struct vmw_private *vmw_priv;
41
42 void *vmalloc;
43
44 struct mutex bo_mutex;
45 struct vmw_buffer_object *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
72static 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
101static 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
159static 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 */
175static 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_buffer_object *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_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
255out_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 }
263out_unlock:
264 mutex_unlock(&par->bo_mutex);
265}
266
267static 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
299static 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
321static 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
359static 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
368static 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
375static 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
382static 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
393static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
394 size_t size, struct vmw_buffer_object **out)
395{
396 struct vmw_buffer_object *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_bo_init(vmw_priv, vmw_bo, size,
408 &vmw_sys_placement,
409 false,
410 &vmw_bo_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
419err_unlock:
420 ttm_write_unlock(&vmw_priv->reservation_sem);
421 return ret;
422}
423
424static 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
439static 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
447restart:
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
461static 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_bo_unreference(&par->vmw_bo);
495
496 return 0;
497}
498
499static 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
556static 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 *mode;
568 int ret;
569
570 mode = drm_mode_duplicate(vmw_priv->dev, &new_mode);
571 if (!mode) {
572 DRM_ERROR("Could not create new fb mode.\n");
573 return -ENOMEM;
574 }
575
576 mode->hdisplay = var->xres;
577 mode->vdisplay = var->yres;
578 vmw_guess_mode_timing(mode);
579
580 if (!vmw_kms_validate_mode_vram(vmw_priv,
581 mode->hdisplay *
582 DIV_ROUND_UP(var->bits_per_pixel, 8),
583 mode->vdisplay)) {
584 drm_mode_destroy(vmw_priv->dev, mode);
585 return -EINVAL;
586 }
587
588 mutex_lock(&par->bo_mutex);
589 ret = vmw_fb_kms_framebuffer(info);
590 if (ret)
591 goto out_unlock;
592
593 par->fb_x = var->xoffset;
594 par->fb_y = var->yoffset;
595
596 set.crtc = par->crtc;
597 set.x = 0;
598 set.y = 0;
599 set.mode = mode;
600 set.fb = par->set_fb;
601 set.num_connectors = 1;
602 set.connectors = &par->con;
603
604 ret = vmwgfx_set_config_internal(&set);
605 if (ret)
606 goto out_unlock;
607
608 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y,
609 par->set_fb->width, par->set_fb->height);
610
611 /* If there already was stuff dirty we wont
612 * schedule a new work, so lets do it now */
613
614 schedule_delayed_work(&par->local_work, 0);
615
616out_unlock:
617 if (par->set_mode)
618 drm_mode_destroy(vmw_priv->dev, par->set_mode);
619 par->set_mode = mode;
620
621 mutex_unlock(&par->bo_mutex);
622
623 return ret;
624}
625
626
627static struct fb_ops vmw_fb_ops = {
628 .owner = THIS_MODULE,
629 .fb_check_var = vmw_fb_check_var,
630 .fb_set_par = vmw_fb_set_par,
631 .fb_setcolreg = vmw_fb_setcolreg,
632 .fb_fillrect = vmw_fb_fillrect,
633 .fb_copyarea = vmw_fb_copyarea,
634 .fb_imageblit = vmw_fb_imageblit,
635 .fb_pan_display = vmw_fb_pan_display,
636 .fb_blank = vmw_fb_blank,
637};
638
639int vmw_fb_init(struct vmw_private *vmw_priv)
640{
641 struct device *device = &vmw_priv->dev->pdev->dev;
642 struct vmw_fb_par *par;
643 struct fb_info *info;
644 unsigned fb_width, fb_height;
645 unsigned int fb_bpp, fb_pitch, fb_size;
646 struct drm_display_mode *init_mode;
647 int ret;
648
649 fb_bpp = 32;
650
651 /* XXX As shouldn't these be as well. */
652 fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
653 fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
654
655 fb_pitch = fb_width * fb_bpp / 8;
656 fb_size = fb_pitch * fb_height;
657
658 info = framebuffer_alloc(sizeof(*par), device);
659 if (!info)
660 return -ENOMEM;
661
662 /*
663 * Par
664 */
665 vmw_priv->fb_info = info;
666 par = info->par;
667 memset(par, 0, sizeof(*par));
668 INIT_DELAYED_WORK(&par->local_work, &vmw_fb_dirty_flush);
669 par->vmw_priv = vmw_priv;
670 par->vmalloc = NULL;
671 par->max_width = fb_width;
672 par->max_height = fb_height;
673
674 ret = vmw_kms_fbdev_init_data(vmw_priv, 0, par->max_width,
675 par->max_height, &par->con,
676 &par->crtc, &init_mode);
677 if (ret)
678 goto err_kms;
679
680 info->var.xres = init_mode->hdisplay;
681 info->var.yres = init_mode->vdisplay;
682
683 /*
684 * Create buffers and alloc memory
685 */
686 par->vmalloc = vzalloc(fb_size);
687 if (unlikely(par->vmalloc == NULL)) {
688 ret = -ENOMEM;
689 goto err_free;
690 }
691
692 /*
693 * Fixed and var
694 */
695 strcpy(info->fix.id, "svgadrmfb");
696 info->fix.type = FB_TYPE_PACKED_PIXELS;
697 info->fix.visual = FB_VISUAL_TRUECOLOR;
698 info->fix.type_aux = 0;
699 info->fix.xpanstep = 1; /* doing it in hw */
700 info->fix.ypanstep = 1; /* doing it in hw */
701 info->fix.ywrapstep = 0;
702 info->fix.accel = FB_ACCEL_NONE;
703 info->fix.line_length = fb_pitch;
704
705 info->fix.smem_start = 0;
706 info->fix.smem_len = fb_size;
707
708 info->pseudo_palette = par->pseudo_palette;
709 info->screen_base = (char __iomem *)par->vmalloc;
710 info->screen_size = fb_size;
711
712 info->fbops = &vmw_fb_ops;
713
714 /* 24 depth per default */
715 info->var.red.offset = 16;
716 info->var.green.offset = 8;
717 info->var.blue.offset = 0;
718 info->var.red.length = 8;
719 info->var.green.length = 8;
720 info->var.blue.length = 8;
721 info->var.transp.offset = 0;
722 info->var.transp.length = 0;
723
724 info->var.xres_virtual = fb_width;
725 info->var.yres_virtual = fb_height;
726 info->var.bits_per_pixel = fb_bpp;
727 info->var.xoffset = 0;
728 info->var.yoffset = 0;
729 info->var.activate = FB_ACTIVATE_NOW;
730 info->var.height = -1;
731 info->var.width = -1;
732
733 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
734 info->apertures = alloc_apertures(1);
735 if (!info->apertures) {
736 ret = -ENOMEM;
737 goto err_aper;
738 }
739 info->apertures->ranges[0].base = vmw_priv->vram_start;
740 info->apertures->ranges[0].size = vmw_priv->vram_size;
741
742 /*
743 * Dirty & Deferred IO
744 */
745 par->dirty.x1 = par->dirty.x2 = 0;
746 par->dirty.y1 = par->dirty.y2 = 0;
747 par->dirty.active = true;
748 spin_lock_init(&par->dirty.lock);
749 mutex_init(&par->bo_mutex);
750 info->fbdefio = &vmw_defio;
751 fb_deferred_io_init(info);
752
753 ret = register_framebuffer(info);
754 if (unlikely(ret != 0))
755 goto err_defio;
756
757 vmw_fb_set_par(info);
758
759 return 0;
760
761err_defio:
762 fb_deferred_io_cleanup(info);
763err_aper:
764err_free:
765 vfree(par->vmalloc);
766err_kms:
767 framebuffer_release(info);
768 vmw_priv->fb_info = NULL;
769
770 return ret;
771}
772
773int vmw_fb_close(struct vmw_private *vmw_priv)
774{
775 struct fb_info *info;
776 struct vmw_fb_par *par;
777
778 if (!vmw_priv->fb_info)
779 return 0;
780
781 info = vmw_priv->fb_info;
782 par = info->par;
783
784 /* ??? order */
785 fb_deferred_io_cleanup(info);
786 cancel_delayed_work_sync(&par->local_work);
787 unregister_framebuffer(info);
788
789 mutex_lock(&par->bo_mutex);
790 (void) vmw_fb_kms_detach(par, true, true);
791 mutex_unlock(&par->bo_mutex);
792
793 vfree(par->vmalloc);
794 framebuffer_release(info);
795
796 return 0;
797}
798
799int vmw_fb_off(struct vmw_private *vmw_priv)
800{
801 struct fb_info *info;
802 struct vmw_fb_par *par;
803 unsigned long flags;
804
805 if (!vmw_priv->fb_info)
806 return -EINVAL;
807
808 info = vmw_priv->fb_info;
809 par = info->par;
810
811 spin_lock_irqsave(&par->dirty.lock, flags);
812 par->dirty.active = false;
813 spin_unlock_irqrestore(&par->dirty.lock, flags);
814
815 flush_delayed_work(&info->deferred_work);
816 flush_delayed_work(&par->local_work);
817
818 return 0;
819}
820
821int vmw_fb_on(struct vmw_private *vmw_priv)
822{
823 struct fb_info *info;
824 struct vmw_fb_par *par;
825 unsigned long flags;
826
827 if (!vmw_priv->fb_info)
828 return -EINVAL;
829
830 info = vmw_priv->fb_info;
831 par = info->par;
832
833 spin_lock_irqsave(&par->dirty.lock, flags);
834 par->dirty.active = true;
835 spin_unlock_irqrestore(&par->dirty.lock, flags);
836
837 /*
838 * Need to reschedule a dirty update, because otherwise that's
839 * only done in dirty_mark() if the previous coalesced
840 * dirty region was empty.
841 */
842 schedule_delayed_work(&par->local_work, 0);
843
844 return 0;
845}
1/**************************************************************************
2 *
3 * Copyright © 2007 David Airlie
4 * Copyright © 2009 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 "drmP.h"
32#include "vmwgfx_drv.h"
33
34#include "ttm/ttm_placement.h"
35
36#define VMW_DIRTY_DELAY (HZ / 30)
37
38struct vmw_fb_par {
39 struct vmw_private *vmw_priv;
40
41 void *vmalloc;
42
43 struct vmw_dma_buffer *vmw_bo;
44 struct ttm_bo_kmap_obj map;
45
46 u32 pseudo_palette[17];
47
48 unsigned depth;
49 unsigned bpp;
50
51 unsigned max_width;
52 unsigned max_height;
53
54 void *bo_ptr;
55 unsigned bo_size;
56 bool bo_iowrite;
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
68static int vmw_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
69 unsigned blue, unsigned transp,
70 struct fb_info *info)
71{
72 struct vmw_fb_par *par = info->par;
73 u32 *pal = par->pseudo_palette;
74
75 if (regno > 15) {
76 DRM_ERROR("Bad regno %u.\n", regno);
77 return 1;
78 }
79
80 switch (par->depth) {
81 case 24:
82 case 32:
83 pal[regno] = ((red & 0xff00) << 8) |
84 (green & 0xff00) |
85 ((blue & 0xff00) >> 8);
86 break;
87 default:
88 DRM_ERROR("Bad depth %u, bpp %u.\n", par->depth, par->bpp);
89 return 1;
90 }
91
92 return 0;
93}
94
95static int vmw_fb_check_var(struct fb_var_screeninfo *var,
96 struct fb_info *info)
97{
98 int depth = var->bits_per_pixel;
99 struct vmw_fb_par *par = info->par;
100 struct vmw_private *vmw_priv = par->vmw_priv;
101
102 switch (var->bits_per_pixel) {
103 case 32:
104 depth = (var->transp.length > 0) ? 32 : 24;
105 break;
106 default:
107 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
108 return -EINVAL;
109 }
110
111 switch (depth) {
112 case 24:
113 var->red.offset = 16;
114 var->green.offset = 8;
115 var->blue.offset = 0;
116 var->red.length = 8;
117 var->green.length = 8;
118 var->blue.length = 8;
119 var->transp.length = 0;
120 var->transp.offset = 0;
121 break;
122 case 32:
123 var->red.offset = 16;
124 var->green.offset = 8;
125 var->blue.offset = 0;
126 var->red.length = 8;
127 var->green.length = 8;
128 var->blue.length = 8;
129 var->transp.length = 8;
130 var->transp.offset = 24;
131 break;
132 default:
133 DRM_ERROR("Bad depth %u.\n", depth);
134 return -EINVAL;
135 }
136
137 if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) &&
138 (var->xoffset != 0 || var->yoffset != 0)) {
139 DRM_ERROR("Can not handle panning without display topology\n");
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 info->fix.line_length,
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
159static int vmw_fb_set_par(struct fb_info *info)
160{
161 struct vmw_fb_par *par = info->par;
162 struct vmw_private *vmw_priv = par->vmw_priv;
163 int ret;
164
165 ret = vmw_kms_write_svga(vmw_priv, info->var.xres, info->var.yres,
166 info->fix.line_length,
167 par->bpp, par->depth);
168 if (ret)
169 return ret;
170
171 if (vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) {
172 /* TODO check if pitch and offset changes */
173 vmw_write(vmw_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 1);
174 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, 0);
175 vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, true);
176 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, info->var.xoffset);
177 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, info->var.yoffset);
178 vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, info->var.xres);
179 vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, info->var.yres);
180 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
181 }
182
183 /* This is really helpful since if this fails the user
184 * can probably not see anything on the screen.
185 */
186 WARN_ON(vmw_read(vmw_priv, SVGA_REG_FB_OFFSET) != 0);
187
188 return 0;
189}
190
191static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
192 struct fb_info *info)
193{
194 return 0;
195}
196
197static int vmw_fb_blank(int blank, struct fb_info *info)
198{
199 return 0;
200}
201
202/*
203 * Dirty code
204 */
205
206static void vmw_fb_dirty_flush(struct vmw_fb_par *par)
207{
208 struct vmw_private *vmw_priv = par->vmw_priv;
209 struct fb_info *info = vmw_priv->fb_info;
210 int stride = (info->fix.line_length / 4);
211 int *src = (int *)info->screen_base;
212 __le32 __iomem *vram_mem = par->bo_ptr;
213 unsigned long flags;
214 unsigned x, y, w, h;
215 int i, k;
216 struct {
217 uint32_t header;
218 SVGAFifoCmdUpdate body;
219 } *cmd;
220
221 if (vmw_priv->suspended)
222 return;
223
224 spin_lock_irqsave(&par->dirty.lock, flags);
225 if (!par->dirty.active) {
226 spin_unlock_irqrestore(&par->dirty.lock, flags);
227 return;
228 }
229 x = par->dirty.x1;
230 y = par->dirty.y1;
231 w = min(par->dirty.x2, info->var.xres) - x;
232 h = min(par->dirty.y2, info->var.yres) - y;
233 par->dirty.x1 = par->dirty.x2 = 0;
234 par->dirty.y1 = par->dirty.y2 = 0;
235 spin_unlock_irqrestore(&par->dirty.lock, flags);
236
237 for (i = y * stride; i < info->fix.smem_len / 4; i += stride) {
238 for (k = i+x; k < i+x+w && k < info->fix.smem_len / 4; k++)
239 iowrite32(src[k], vram_mem + k);
240 }
241
242#if 0
243 DRM_INFO("%s, (%u, %u) (%ux%u)\n", __func__, x, y, w, h);
244#endif
245
246 cmd = vmw_fifo_reserve(vmw_priv, sizeof(*cmd));
247 if (unlikely(cmd == NULL)) {
248 DRM_ERROR("Fifo reserve failed.\n");
249 return;
250 }
251
252 cmd->header = cpu_to_le32(SVGA_CMD_UPDATE);
253 cmd->body.x = cpu_to_le32(x);
254 cmd->body.y = cpu_to_le32(y);
255 cmd->body.width = cpu_to_le32(w);
256 cmd->body.height = cpu_to_le32(h);
257 vmw_fifo_commit(vmw_priv, sizeof(*cmd));
258}
259
260static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
261 unsigned x1, unsigned y1,
262 unsigned width, unsigned height)
263{
264 struct fb_info *info = par->vmw_priv->fb_info;
265 unsigned long flags;
266 unsigned x2 = x1 + width;
267 unsigned y2 = y1 + height;
268
269 spin_lock_irqsave(&par->dirty.lock, flags);
270 if (par->dirty.x1 == par->dirty.x2) {
271 par->dirty.x1 = x1;
272 par->dirty.y1 = y1;
273 par->dirty.x2 = x2;
274 par->dirty.y2 = y2;
275 /* if we are active start the dirty work
276 * we share the work with the defio system */
277 if (par->dirty.active)
278 schedule_delayed_work(&info->deferred_work, VMW_DIRTY_DELAY);
279 } else {
280 if (x1 < par->dirty.x1)
281 par->dirty.x1 = x1;
282 if (y1 < par->dirty.y1)
283 par->dirty.y1 = y1;
284 if (x2 > par->dirty.x2)
285 par->dirty.x2 = x2;
286 if (y2 > par->dirty.y2)
287 par->dirty.y2 = y2;
288 }
289 spin_unlock_irqrestore(&par->dirty.lock, flags);
290}
291
292static void vmw_deferred_io(struct fb_info *info,
293 struct list_head *pagelist)
294{
295 struct vmw_fb_par *par = info->par;
296 unsigned long start, end, min, max;
297 unsigned long flags;
298 struct page *page;
299 int y1, y2;
300
301 min = ULONG_MAX;
302 max = 0;
303 list_for_each_entry(page, pagelist, lru) {
304 start = page->index << PAGE_SHIFT;
305 end = start + PAGE_SIZE - 1;
306 min = min(min, start);
307 max = max(max, end);
308 }
309
310 if (min < max) {
311 y1 = min / info->fix.line_length;
312 y2 = (max / info->fix.line_length) + 1;
313
314 spin_lock_irqsave(&par->dirty.lock, flags);
315 par->dirty.x1 = 0;
316 par->dirty.y1 = y1;
317 par->dirty.x2 = info->var.xres;
318 par->dirty.y2 = y2;
319 spin_unlock_irqrestore(&par->dirty.lock, flags);
320 }
321
322 vmw_fb_dirty_flush(par);
323};
324
325struct fb_deferred_io vmw_defio = {
326 .delay = VMW_DIRTY_DELAY,
327 .deferred_io = vmw_deferred_io,
328};
329
330/*
331 * Draw code
332 */
333
334static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
335{
336 cfb_fillrect(info, rect);
337 vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
338 rect->width, rect->height);
339}
340
341static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
342{
343 cfb_copyarea(info, region);
344 vmw_fb_dirty_mark(info->par, region->dx, region->dy,
345 region->width, region->height);
346}
347
348static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image)
349{
350 cfb_imageblit(info, image);
351 vmw_fb_dirty_mark(info->par, image->dx, image->dy,
352 image->width, image->height);
353}
354
355/*
356 * Bring up code
357 */
358
359static struct fb_ops vmw_fb_ops = {
360 .owner = THIS_MODULE,
361 .fb_check_var = vmw_fb_check_var,
362 .fb_set_par = vmw_fb_set_par,
363 .fb_setcolreg = vmw_fb_setcolreg,
364 .fb_fillrect = vmw_fb_fillrect,
365 .fb_copyarea = vmw_fb_copyarea,
366 .fb_imageblit = vmw_fb_imageblit,
367 .fb_pan_display = vmw_fb_pan_display,
368 .fb_blank = vmw_fb_blank,
369};
370
371static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
372 size_t size, struct vmw_dma_buffer **out)
373{
374 struct vmw_dma_buffer *vmw_bo;
375 struct ttm_placement ne_placement = vmw_vram_ne_placement;
376 int ret;
377
378 ne_placement.lpfn = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
379
380 /* interuptable? */
381 ret = ttm_write_lock(&vmw_priv->fbdev_master.lock, false);
382 if (unlikely(ret != 0))
383 return ret;
384
385 vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
386 if (!vmw_bo)
387 goto err_unlock;
388
389 ret = vmw_dmabuf_init(vmw_priv, vmw_bo, size,
390 &ne_placement,
391 false,
392 &vmw_dmabuf_bo_free);
393 if (unlikely(ret != 0))
394 goto err_unlock; /* init frees the buffer on failure */
395
396 *out = vmw_bo;
397
398 ttm_write_unlock(&vmw_priv->fbdev_master.lock);
399
400 return 0;
401
402err_unlock:
403 ttm_write_unlock(&vmw_priv->fbdev_master.lock);
404 return ret;
405}
406
407int vmw_fb_init(struct vmw_private *vmw_priv)
408{
409 struct device *device = &vmw_priv->dev->pdev->dev;
410 struct vmw_fb_par *par;
411 struct fb_info *info;
412 unsigned initial_width, initial_height;
413 unsigned fb_width, fb_height;
414 unsigned fb_bpp, fb_depth, fb_offset, fb_pitch, fb_size;
415 int ret;
416
417 fb_bpp = 32;
418 fb_depth = 24;
419
420 /* XXX As shouldn't these be as well. */
421 fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
422 fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
423
424 initial_width = min(vmw_priv->initial_width, fb_width);
425 initial_height = min(vmw_priv->initial_height, fb_height);
426
427 fb_pitch = fb_width * fb_bpp / 8;
428 fb_size = fb_pitch * fb_height;
429 fb_offset = vmw_read(vmw_priv, SVGA_REG_FB_OFFSET);
430
431 info = framebuffer_alloc(sizeof(*par), device);
432 if (!info)
433 return -ENOMEM;
434
435 /*
436 * Par
437 */
438 vmw_priv->fb_info = info;
439 par = info->par;
440 par->vmw_priv = vmw_priv;
441 par->depth = fb_depth;
442 par->bpp = fb_bpp;
443 par->vmalloc = NULL;
444 par->max_width = fb_width;
445 par->max_height = fb_height;
446
447 /*
448 * Create buffers and alloc memory
449 */
450 par->vmalloc = vmalloc(fb_size);
451 if (unlikely(par->vmalloc == NULL)) {
452 ret = -ENOMEM;
453 goto err_free;
454 }
455
456 ret = vmw_fb_create_bo(vmw_priv, fb_size, &par->vmw_bo);
457 if (unlikely(ret != 0))
458 goto err_free;
459
460 ret = ttm_bo_kmap(&par->vmw_bo->base,
461 0,
462 par->vmw_bo->base.num_pages,
463 &par->map);
464 if (unlikely(ret != 0))
465 goto err_unref;
466 par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &par->bo_iowrite);
467 par->bo_size = fb_size;
468
469 /*
470 * Fixed and var
471 */
472 strcpy(info->fix.id, "svgadrmfb");
473 info->fix.type = FB_TYPE_PACKED_PIXELS;
474 info->fix.visual = FB_VISUAL_TRUECOLOR;
475 info->fix.type_aux = 0;
476 info->fix.xpanstep = 1; /* doing it in hw */
477 info->fix.ypanstep = 1; /* doing it in hw */
478 info->fix.ywrapstep = 0;
479 info->fix.accel = FB_ACCEL_NONE;
480 info->fix.line_length = fb_pitch;
481
482 info->fix.smem_start = 0;
483 info->fix.smem_len = fb_size;
484
485 info->pseudo_palette = par->pseudo_palette;
486 info->screen_base = par->vmalloc;
487 info->screen_size = fb_size;
488
489 info->flags = FBINFO_DEFAULT;
490 info->fbops = &vmw_fb_ops;
491
492 /* 24 depth per default */
493 info->var.red.offset = 16;
494 info->var.green.offset = 8;
495 info->var.blue.offset = 0;
496 info->var.red.length = 8;
497 info->var.green.length = 8;
498 info->var.blue.length = 8;
499 info->var.transp.offset = 0;
500 info->var.transp.length = 0;
501
502 info->var.xres_virtual = fb_width;
503 info->var.yres_virtual = fb_height;
504 info->var.bits_per_pixel = par->bpp;
505 info->var.xoffset = 0;
506 info->var.yoffset = 0;
507 info->var.activate = FB_ACTIVATE_NOW;
508 info->var.height = -1;
509 info->var.width = -1;
510
511 info->var.xres = initial_width;
512 info->var.yres = initial_height;
513
514 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
515
516 info->apertures = alloc_apertures(1);
517 if (!info->apertures) {
518 ret = -ENOMEM;
519 goto err_aper;
520 }
521 info->apertures->ranges[0].base = vmw_priv->vram_start;
522 info->apertures->ranges[0].size = vmw_priv->vram_size;
523
524 /*
525 * Dirty & Deferred IO
526 */
527 par->dirty.x1 = par->dirty.x2 = 0;
528 par->dirty.y1 = par->dirty.y2 = 0;
529 par->dirty.active = true;
530 spin_lock_init(&par->dirty.lock);
531 info->fbdefio = &vmw_defio;
532 fb_deferred_io_init(info);
533
534 ret = register_framebuffer(info);
535 if (unlikely(ret != 0))
536 goto err_defio;
537
538 return 0;
539
540err_defio:
541 fb_deferred_io_cleanup(info);
542err_aper:
543 ttm_bo_kunmap(&par->map);
544err_unref:
545 ttm_bo_unref((struct ttm_buffer_object **)&par->vmw_bo);
546err_free:
547 vfree(par->vmalloc);
548 framebuffer_release(info);
549 vmw_priv->fb_info = NULL;
550
551 return ret;
552}
553
554int vmw_fb_close(struct vmw_private *vmw_priv)
555{
556 struct fb_info *info;
557 struct vmw_fb_par *par;
558 struct ttm_buffer_object *bo;
559
560 if (!vmw_priv->fb_info)
561 return 0;
562
563 info = vmw_priv->fb_info;
564 par = info->par;
565 bo = &par->vmw_bo->base;
566 par->vmw_bo = NULL;
567
568 /* ??? order */
569 fb_deferred_io_cleanup(info);
570 unregister_framebuffer(info);
571
572 ttm_bo_kunmap(&par->map);
573 ttm_bo_unref(&bo);
574
575 vfree(par->vmalloc);
576 framebuffer_release(info);
577
578 return 0;
579}
580
581int vmw_fb_off(struct vmw_private *vmw_priv)
582{
583 struct fb_info *info;
584 struct vmw_fb_par *par;
585 unsigned long flags;
586
587 if (!vmw_priv->fb_info)
588 return -EINVAL;
589
590 info = vmw_priv->fb_info;
591 par = info->par;
592
593 spin_lock_irqsave(&par->dirty.lock, flags);
594 par->dirty.active = false;
595 spin_unlock_irqrestore(&par->dirty.lock, flags);
596
597 flush_delayed_work_sync(&info->deferred_work);
598
599 par->bo_ptr = NULL;
600 ttm_bo_kunmap(&par->map);
601
602 vmw_dmabuf_unpin(vmw_priv, par->vmw_bo, false);
603
604 return 0;
605}
606
607int vmw_fb_on(struct vmw_private *vmw_priv)
608{
609 struct fb_info *info;
610 struct vmw_fb_par *par;
611 unsigned long flags;
612 bool dummy;
613 int ret;
614
615 if (!vmw_priv->fb_info)
616 return -EINVAL;
617
618 info = vmw_priv->fb_info;
619 par = info->par;
620
621 /* we are already active */
622 if (par->bo_ptr != NULL)
623 return 0;
624
625 /* Make sure that all overlays are stoped when we take over */
626 vmw_overlay_stop_all(vmw_priv);
627
628 ret = vmw_dmabuf_to_start_of_vram(vmw_priv, par->vmw_bo, true, false);
629 if (unlikely(ret != 0)) {
630 DRM_ERROR("could not move buffer to start of VRAM\n");
631 goto err_no_buffer;
632 }
633
634 ret = ttm_bo_kmap(&par->vmw_bo->base,
635 0,
636 par->vmw_bo->base.num_pages,
637 &par->map);
638 BUG_ON(ret != 0);
639 par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &dummy);
640
641 spin_lock_irqsave(&par->dirty.lock, flags);
642 par->dirty.active = true;
643 spin_unlock_irqrestore(&par->dirty.lock, flags);
644
645err_no_buffer:
646 vmw_fb_set_par(info);
647
648 vmw_fb_dirty_mark(par, 0, 0, info->var.xres, info->var.yres);
649
650 /* If there already was stuff dirty we wont
651 * schedule a new work, so lets do it now */
652 schedule_delayed_work(&info->deferred_work, 0);
653
654 return 0;
655}