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 struct ttm_bo_kmap_obj map;
47 void *bo_ptr;
48 unsigned bo_size;
49 struct drm_framebuffer *set_fb;
50 struct drm_display_mode *set_mode;
51 u32 fb_x;
52 u32 fb_y;
53 bool bo_iowrite;
54
55 u32 pseudo_palette[17];
56
57 unsigned max_width;
58 unsigned max_height;
59
60 struct {
61 spinlock_t lock;
62 bool active;
63 unsigned x1;
64 unsigned y1;
65 unsigned x2;
66 unsigned y2;
67 } dirty;
68
69 struct drm_crtc *crtc;
70 struct drm_connector *con;
71 struct delayed_work local_work;
72 };
73
vmw_fb_setcolreg(unsigned regno,unsigned red,unsigned green,unsigned blue,unsigned transp,struct fb_info * info)74 static int vmw_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
75 unsigned blue, unsigned transp,
76 struct fb_info *info)
77 {
78 struct vmw_fb_par *par = info->par;
79 u32 *pal = par->pseudo_palette;
80
81 if (regno > 15) {
82 DRM_ERROR("Bad regno %u.\n", regno);
83 return 1;
84 }
85
86 switch (par->set_fb->format->depth) {
87 case 24:
88 case 32:
89 pal[regno] = ((red & 0xff00) << 8) |
90 (green & 0xff00) |
91 ((blue & 0xff00) >> 8);
92 break;
93 default:
94 DRM_ERROR("Bad depth %u, bpp %u.\n",
95 par->set_fb->format->depth,
96 par->set_fb->format->cpp[0] * 8);
97 return 1;
98 }
99
100 return 0;
101 }
102
vmw_fb_check_var(struct fb_var_screeninfo * var,struct fb_info * info)103 static int vmw_fb_check_var(struct fb_var_screeninfo *var,
104 struct fb_info *info)
105 {
106 int depth = var->bits_per_pixel;
107 struct vmw_fb_par *par = info->par;
108 struct vmw_private *vmw_priv = par->vmw_priv;
109
110 switch (var->bits_per_pixel) {
111 case 32:
112 depth = (var->transp.length > 0) ? 32 : 24;
113 break;
114 default:
115 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
116 return -EINVAL;
117 }
118
119 switch (depth) {
120 case 24:
121 var->red.offset = 16;
122 var->green.offset = 8;
123 var->blue.offset = 0;
124 var->red.length = 8;
125 var->green.length = 8;
126 var->blue.length = 8;
127 var->transp.length = 0;
128 var->transp.offset = 0;
129 break;
130 case 32:
131 var->red.offset = 16;
132 var->green.offset = 8;
133 var->blue.offset = 0;
134 var->red.length = 8;
135 var->green.length = 8;
136 var->blue.length = 8;
137 var->transp.length = 8;
138 var->transp.offset = 24;
139 break;
140 default:
141 DRM_ERROR("Bad depth %u.\n", depth);
142 return -EINVAL;
143 }
144
145 if ((var->xoffset + var->xres) > par->max_width ||
146 (var->yoffset + var->yres) > par->max_height) {
147 DRM_ERROR("Requested geom can not fit in framebuffer\n");
148 return -EINVAL;
149 }
150
151 if (!vmw_kms_validate_mode_vram(vmw_priv,
152 var->xres * var->bits_per_pixel/8,
153 var->yoffset + var->yres)) {
154 DRM_ERROR("Requested geom can not fit in framebuffer\n");
155 return -EINVAL;
156 }
157
158 return 0;
159 }
160
vmw_fb_blank(int blank,struct fb_info * info)161 static int vmw_fb_blank(int blank, struct fb_info *info)
162 {
163 return 0;
164 }
165
166 /*
167 * Dirty code
168 */
169
vmw_fb_dirty_flush(struct work_struct * work)170 static void vmw_fb_dirty_flush(struct work_struct *work)
171 {
172 struct vmw_fb_par *par = container_of(work, struct vmw_fb_par,
173 local_work.work);
174 struct vmw_private *vmw_priv = par->vmw_priv;
175 struct fb_info *info = vmw_priv->fb_info;
176 unsigned long irq_flags;
177 s32 dst_x1, dst_x2, dst_y1, dst_y2, w, h;
178 u32 cpp, max_x, max_y;
179 struct drm_clip_rect clip;
180 struct drm_framebuffer *cur_fb;
181 u8 *src_ptr, *dst_ptr;
182
183 if (vmw_priv->suspended)
184 return;
185
186 mutex_lock(&par->bo_mutex);
187 cur_fb = par->set_fb;
188 if (!cur_fb)
189 goto out_unlock;
190
191 spin_lock_irqsave(&par->dirty.lock, irq_flags);
192 if (!par->dirty.active) {
193 spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
194 goto out_unlock;
195 }
196
197 /*
198 * Handle panning when copying from vmalloc to framebuffer.
199 * Clip dirty area to framebuffer.
200 */
201 cpp = cur_fb->format->cpp[0];
202 max_x = par->fb_x + cur_fb->width;
203 max_y = par->fb_y + cur_fb->height;
204
205 dst_x1 = par->dirty.x1 - par->fb_x;
206 dst_y1 = par->dirty.y1 - par->fb_y;
207 dst_x1 = max_t(s32, dst_x1, 0);
208 dst_y1 = max_t(s32, dst_y1, 0);
209
210 dst_x2 = par->dirty.x2 - par->fb_x;
211 dst_y2 = par->dirty.y2 - par->fb_y;
212 dst_x2 = min_t(s32, dst_x2, max_x);
213 dst_y2 = min_t(s32, dst_y2, max_y);
214 w = dst_x2 - dst_x1;
215 h = dst_y2 - dst_y1;
216 w = max_t(s32, 0, w);
217 h = max_t(s32, 0, h);
218
219 par->dirty.x1 = par->dirty.x2 = 0;
220 par->dirty.y1 = par->dirty.y2 = 0;
221 spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
222
223 if (w && h) {
224 dst_ptr = (u8 *)par->bo_ptr +
225 (dst_y1 * par->set_fb->pitches[0] + dst_x1 * cpp);
226 src_ptr = (u8 *)par->vmalloc +
227 ((dst_y1 + par->fb_y) * info->fix.line_length +
228 (dst_x1 + par->fb_x) * cpp);
229
230 while (h-- > 0) {
231 memcpy(dst_ptr, src_ptr, w*cpp);
232 dst_ptr += par->set_fb->pitches[0];
233 src_ptr += info->fix.line_length;
234 }
235
236 clip.x1 = dst_x1;
237 clip.x2 = dst_x2;
238 clip.y1 = dst_y1;
239 clip.y2 = dst_y2;
240
241 WARN_ON_ONCE(par->set_fb->funcs->dirty(cur_fb, NULL, 0, 0,
242 &clip, 1));
243 vmw_fifo_flush(vmw_priv, false);
244 }
245 out_unlock:
246 mutex_unlock(&par->bo_mutex);
247 }
248
vmw_fb_dirty_mark(struct vmw_fb_par * par,unsigned x1,unsigned y1,unsigned width,unsigned height)249 static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
250 unsigned x1, unsigned y1,
251 unsigned width, unsigned height)
252 {
253 unsigned long flags;
254 unsigned x2 = x1 + width;
255 unsigned y2 = y1 + height;
256
257 spin_lock_irqsave(&par->dirty.lock, flags);
258 if (par->dirty.x1 == par->dirty.x2) {
259 par->dirty.x1 = x1;
260 par->dirty.y1 = y1;
261 par->dirty.x2 = x2;
262 par->dirty.y2 = y2;
263 /* if we are active start the dirty work
264 * we share the work with the defio system */
265 if (par->dirty.active)
266 schedule_delayed_work(&par->local_work,
267 VMW_DIRTY_DELAY);
268 } else {
269 if (x1 < par->dirty.x1)
270 par->dirty.x1 = x1;
271 if (y1 < par->dirty.y1)
272 par->dirty.y1 = y1;
273 if (x2 > par->dirty.x2)
274 par->dirty.x2 = x2;
275 if (y2 > par->dirty.y2)
276 par->dirty.y2 = y2;
277 }
278 spin_unlock_irqrestore(&par->dirty.lock, flags);
279 }
280
vmw_fb_pan_display(struct fb_var_screeninfo * var,struct fb_info * info)281 static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
282 struct fb_info *info)
283 {
284 struct vmw_fb_par *par = info->par;
285
286 if ((var->xoffset + var->xres) > var->xres_virtual ||
287 (var->yoffset + var->yres) > var->yres_virtual) {
288 DRM_ERROR("Requested panning can not fit in framebuffer\n");
289 return -EINVAL;
290 }
291
292 mutex_lock(&par->bo_mutex);
293 par->fb_x = var->xoffset;
294 par->fb_y = var->yoffset;
295 if (par->set_fb)
296 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y, par->set_fb->width,
297 par->set_fb->height);
298 mutex_unlock(&par->bo_mutex);
299
300 return 0;
301 }
302
vmw_deferred_io(struct fb_info * info,struct list_head * pagelist)303 static void vmw_deferred_io(struct fb_info *info,
304 struct list_head *pagelist)
305 {
306 struct vmw_fb_par *par = info->par;
307 unsigned long start, end, min, max;
308 unsigned long flags;
309 struct page *page;
310 int y1, y2;
311
312 min = ULONG_MAX;
313 max = 0;
314 list_for_each_entry(page, pagelist, lru) {
315 start = page->index << PAGE_SHIFT;
316 end = start + PAGE_SIZE - 1;
317 min = min(min, start);
318 max = max(max, end);
319 }
320
321 if (min < max) {
322 y1 = min / info->fix.line_length;
323 y2 = (max / info->fix.line_length) + 1;
324
325 spin_lock_irqsave(&par->dirty.lock, flags);
326 par->dirty.x1 = 0;
327 par->dirty.y1 = y1;
328 par->dirty.x2 = info->var.xres;
329 par->dirty.y2 = y2;
330 spin_unlock_irqrestore(&par->dirty.lock, flags);
331
332 /*
333 * Since we've already waited on this work once, try to
334 * execute asap.
335 */
336 cancel_delayed_work(&par->local_work);
337 schedule_delayed_work(&par->local_work, 0);
338 }
339 };
340
341 static struct fb_deferred_io vmw_defio = {
342 .delay = VMW_DIRTY_DELAY,
343 .deferred_io = vmw_deferred_io,
344 };
345
346 /*
347 * Draw code
348 */
349
vmw_fb_fillrect(struct fb_info * info,const struct fb_fillrect * rect)350 static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
351 {
352 cfb_fillrect(info, rect);
353 vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
354 rect->width, rect->height);
355 }
356
vmw_fb_copyarea(struct fb_info * info,const struct fb_copyarea * region)357 static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
358 {
359 cfb_copyarea(info, region);
360 vmw_fb_dirty_mark(info->par, region->dx, region->dy,
361 region->width, region->height);
362 }
363
vmw_fb_imageblit(struct fb_info * info,const struct fb_image * image)364 static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image)
365 {
366 cfb_imageblit(info, image);
367 vmw_fb_dirty_mark(info->par, image->dx, image->dy,
368 image->width, image->height);
369 }
370
371 /*
372 * Bring up code
373 */
374
vmw_fb_create_bo(struct vmw_private * vmw_priv,size_t size,struct vmw_dma_buffer ** out)375 static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
376 size_t size, struct vmw_dma_buffer **out)
377 {
378 struct vmw_dma_buffer *vmw_bo;
379 int ret;
380
381 (void) ttm_write_lock(&vmw_priv->reservation_sem, false);
382
383 vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
384 if (!vmw_bo) {
385 ret = -ENOMEM;
386 goto err_unlock;
387 }
388
389 ret = vmw_dmabuf_init(vmw_priv, vmw_bo, size,
390 &vmw_sys_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 ttm_write_unlock(&vmw_priv->reservation_sem);
398
399 return 0;
400
401 err_unlock:
402 ttm_write_unlock(&vmw_priv->reservation_sem);
403 return ret;
404 }
405
vmw_fb_compute_depth(struct fb_var_screeninfo * var,int * depth)406 static int vmw_fb_compute_depth(struct fb_var_screeninfo *var,
407 int *depth)
408 {
409 switch (var->bits_per_pixel) {
410 case 32:
411 *depth = (var->transp.length > 0) ? 32 : 24;
412 break;
413 default:
414 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
415 return -EINVAL;
416 }
417
418 return 0;
419 }
420
vmwgfx_set_config_internal(struct drm_mode_set * set)421 static int vmwgfx_set_config_internal(struct drm_mode_set *set)
422 {
423 struct drm_crtc *crtc = set->crtc;
424 struct drm_framebuffer *fb;
425 struct drm_crtc *tmp;
426 struct drm_modeset_acquire_ctx *ctx;
427 struct drm_device *dev = set->crtc->dev;
428 int ret;
429
430 ctx = dev->mode_config.acquire_ctx;
431
432 restart:
433 /*
434 * NOTE: ->set_config can also disable other crtcs (if we steal all
435 * connectors from it), hence we need to refcount the fbs across all
436 * crtcs. Atomic modeset will have saner semantics ...
437 */
438 drm_for_each_crtc(tmp, dev)
439 tmp->primary->old_fb = tmp->primary->fb;
440
441 fb = set->fb;
442
443 ret = crtc->funcs->set_config(set, ctx);
444 if (ret == 0) {
445 crtc->primary->crtc = crtc;
446 crtc->primary->fb = fb;
447 }
448
449 drm_for_each_crtc(tmp, dev) {
450 if (tmp->primary->fb)
451 drm_framebuffer_get(tmp->primary->fb);
452 if (tmp->primary->old_fb)
453 drm_framebuffer_put(tmp->primary->old_fb);
454 tmp->primary->old_fb = NULL;
455 }
456
457 if (ret == -EDEADLK) {
458 dev->mode_config.acquire_ctx = NULL;
459
460 retry_locking:
461 drm_modeset_backoff(ctx);
462
463 ret = drm_modeset_lock_all_ctx(dev, ctx);
464 if (ret)
465 goto retry_locking;
466
467 dev->mode_config.acquire_ctx = ctx;
468
469 goto restart;
470 }
471
472 return ret;
473 }
474
vmw_fb_kms_detach(struct vmw_fb_par * par,bool detach_bo,bool unref_bo)475 static int vmw_fb_kms_detach(struct vmw_fb_par *par,
476 bool detach_bo,
477 bool unref_bo)
478 {
479 struct drm_framebuffer *cur_fb = par->set_fb;
480 int ret;
481
482 /* Detach the KMS framebuffer from crtcs */
483 if (par->set_mode) {
484 struct drm_mode_set set;
485
486 set.crtc = par->crtc;
487 set.x = 0;
488 set.y = 0;
489 set.mode = NULL;
490 set.fb = NULL;
491 set.num_connectors = 0;
492 set.connectors = &par->con;
493 ret = vmwgfx_set_config_internal(&set);
494 if (ret) {
495 DRM_ERROR("Could not unset a mode.\n");
496 return ret;
497 }
498 drm_mode_destroy(par->vmw_priv->dev, par->set_mode);
499 par->set_mode = NULL;
500 }
501
502 if (cur_fb) {
503 drm_framebuffer_unreference(cur_fb);
504 par->set_fb = NULL;
505 }
506
507 if (par->vmw_bo && detach_bo) {
508 struct vmw_private *vmw_priv = par->vmw_priv;
509
510 if (par->bo_ptr) {
511 ttm_bo_kunmap(&par->map);
512 par->bo_ptr = NULL;
513 }
514 if (unref_bo)
515 vmw_dmabuf_unreference(&par->vmw_bo);
516 else if (vmw_priv->active_display_unit != vmw_du_legacy)
517 vmw_dmabuf_unpin(par->vmw_priv, par->vmw_bo, false);
518 }
519
520 return 0;
521 }
522
vmw_fb_kms_framebuffer(struct fb_info * info)523 static int vmw_fb_kms_framebuffer(struct fb_info *info)
524 {
525 struct drm_mode_fb_cmd2 mode_cmd;
526 struct vmw_fb_par *par = info->par;
527 struct fb_var_screeninfo *var = &info->var;
528 struct drm_framebuffer *cur_fb;
529 struct vmw_framebuffer *vfb;
530 int ret = 0, depth;
531 size_t new_bo_size;
532
533 ret = vmw_fb_compute_depth(var, &depth);
534 if (ret)
535 return ret;
536
537 mode_cmd.width = var->xres;
538 mode_cmd.height = var->yres;
539 mode_cmd.pitches[0] = ((var->bits_per_pixel + 7) / 8) * mode_cmd.width;
540 mode_cmd.pixel_format =
541 drm_mode_legacy_fb_format(var->bits_per_pixel, depth);
542
543 cur_fb = par->set_fb;
544 if (cur_fb && cur_fb->width == mode_cmd.width &&
545 cur_fb->height == mode_cmd.height &&
546 cur_fb->format->format == mode_cmd.pixel_format &&
547 cur_fb->pitches[0] == mode_cmd.pitches[0])
548 return 0;
549
550 /* Need new buffer object ? */
551 new_bo_size = (size_t) mode_cmd.pitches[0] * (size_t) mode_cmd.height;
552 ret = vmw_fb_kms_detach(par,
553 par->bo_size < new_bo_size ||
554 par->bo_size > 2*new_bo_size,
555 true);
556 if (ret)
557 return ret;
558
559 if (!par->vmw_bo) {
560 ret = vmw_fb_create_bo(par->vmw_priv, new_bo_size,
561 &par->vmw_bo);
562 if (ret) {
563 DRM_ERROR("Failed creating a buffer object for "
564 "fbdev.\n");
565 return ret;
566 }
567 par->bo_size = new_bo_size;
568 }
569
570 vfb = vmw_kms_new_framebuffer(par->vmw_priv, par->vmw_bo, NULL,
571 true, &mode_cmd);
572 if (IS_ERR(vfb))
573 return PTR_ERR(vfb);
574
575 par->set_fb = &vfb->base;
576
577 return 0;
578 }
579
vmw_fb_set_par(struct fb_info * info)580 static int vmw_fb_set_par(struct fb_info *info)
581 {
582 struct vmw_fb_par *par = info->par;
583 struct vmw_private *vmw_priv = par->vmw_priv;
584 struct drm_mode_set set;
585 struct fb_var_screeninfo *var = &info->var;
586 struct drm_display_mode new_mode = { DRM_MODE("fb_mode",
587 DRM_MODE_TYPE_DRIVER,
588 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
589 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
590 };
591 struct drm_display_mode *mode;
592 int ret;
593
594 mode = drm_mode_duplicate(vmw_priv->dev, &new_mode);
595 if (!mode) {
596 DRM_ERROR("Could not create new fb mode.\n");
597 return -ENOMEM;
598 }
599
600 mode->hdisplay = var->xres;
601 mode->vdisplay = var->yres;
602 vmw_guess_mode_timing(mode);
603
604 if (!vmw_kms_validate_mode_vram(vmw_priv,
605 mode->hdisplay *
606 DIV_ROUND_UP(var->bits_per_pixel, 8),
607 mode->vdisplay)) {
608 drm_mode_destroy(vmw_priv->dev, mode);
609 return -EINVAL;
610 }
611
612 mutex_lock(&par->bo_mutex);
613 drm_modeset_lock_all(vmw_priv->dev);
614 ret = vmw_fb_kms_framebuffer(info);
615 if (ret)
616 goto out_unlock;
617
618 par->fb_x = var->xoffset;
619 par->fb_y = var->yoffset;
620
621 set.crtc = par->crtc;
622 set.x = 0;
623 set.y = 0;
624 set.mode = mode;
625 set.fb = par->set_fb;
626 set.num_connectors = 1;
627 set.connectors = &par->con;
628
629 ret = vmwgfx_set_config_internal(&set);
630 if (ret)
631 goto out_unlock;
632
633 if (!par->bo_ptr) {
634 struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(set.fb);
635
636 /*
637 * Pin before mapping. Since we don't know in what placement
638 * to pin, call into KMS to do it for us. LDU doesn't require
639 * additional pinning because set_config() would've pinned
640 * it already
641 */
642 if (vmw_priv->active_display_unit != vmw_du_legacy) {
643 ret = vfb->pin(vfb);
644 if (ret) {
645 DRM_ERROR("Could not pin the fbdev "
646 "framebuffer.\n");
647 goto out_unlock;
648 }
649 }
650
651 ret = ttm_bo_kmap(&par->vmw_bo->base, 0,
652 par->vmw_bo->base.num_pages, &par->map);
653 if (ret) {
654 if (vmw_priv->active_display_unit != vmw_du_legacy)
655 vfb->unpin(vfb);
656
657 DRM_ERROR("Could not map the fbdev framebuffer.\n");
658 goto out_unlock;
659 }
660
661 par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &par->bo_iowrite);
662 }
663
664
665 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y,
666 par->set_fb->width, par->set_fb->height);
667
668 /* If there already was stuff dirty we wont
669 * schedule a new work, so lets do it now */
670
671 schedule_delayed_work(&par->local_work, 0);
672
673 out_unlock:
674 if (par->set_mode)
675 drm_mode_destroy(vmw_priv->dev, par->set_mode);
676 par->set_mode = mode;
677
678 drm_modeset_unlock_all(vmw_priv->dev);
679 mutex_unlock(&par->bo_mutex);
680
681 return ret;
682 }
683
684
685 static struct fb_ops vmw_fb_ops = {
686 .owner = THIS_MODULE,
687 .fb_check_var = vmw_fb_check_var,
688 .fb_set_par = vmw_fb_set_par,
689 .fb_setcolreg = vmw_fb_setcolreg,
690 .fb_fillrect = vmw_fb_fillrect,
691 .fb_copyarea = vmw_fb_copyarea,
692 .fb_imageblit = vmw_fb_imageblit,
693 .fb_pan_display = vmw_fb_pan_display,
694 .fb_blank = vmw_fb_blank,
695 };
696
vmw_fb_init(struct vmw_private * vmw_priv)697 int vmw_fb_init(struct vmw_private *vmw_priv)
698 {
699 struct device *device = &vmw_priv->dev->pdev->dev;
700 struct vmw_fb_par *par;
701 struct fb_info *info;
702 unsigned fb_width, fb_height;
703 unsigned fb_bpp, fb_depth, fb_offset, fb_pitch, fb_size;
704 struct drm_display_mode *init_mode;
705 int ret;
706
707 fb_bpp = 32;
708 fb_depth = 24;
709
710 /* XXX As shouldn't these be as well. */
711 fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
712 fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
713
714 fb_pitch = fb_width * fb_bpp / 8;
715 fb_size = fb_pitch * fb_height;
716 fb_offset = vmw_read(vmw_priv, SVGA_REG_FB_OFFSET);
717
718 info = framebuffer_alloc(sizeof(*par), device);
719 if (!info)
720 return -ENOMEM;
721
722 /*
723 * Par
724 */
725 vmw_priv->fb_info = info;
726 par = info->par;
727 memset(par, 0, sizeof(*par));
728 INIT_DELAYED_WORK(&par->local_work, &vmw_fb_dirty_flush);
729 par->vmw_priv = vmw_priv;
730 par->vmalloc = NULL;
731 par->max_width = fb_width;
732 par->max_height = fb_height;
733
734 drm_modeset_lock_all(vmw_priv->dev);
735 ret = vmw_kms_fbdev_init_data(vmw_priv, 0, par->max_width,
736 par->max_height, &par->con,
737 &par->crtc, &init_mode);
738 if (ret) {
739 drm_modeset_unlock_all(vmw_priv->dev);
740 goto err_kms;
741 }
742
743 info->var.xres = init_mode->hdisplay;
744 info->var.yres = init_mode->vdisplay;
745 drm_modeset_unlock_all(vmw_priv->dev);
746
747 /*
748 * Create buffers and alloc memory
749 */
750 par->vmalloc = vzalloc(fb_size);
751 if (unlikely(par->vmalloc == NULL)) {
752 ret = -ENOMEM;
753 goto err_free;
754 }
755
756 /*
757 * Fixed and var
758 */
759 strcpy(info->fix.id, "svgadrmfb");
760 info->fix.type = FB_TYPE_PACKED_PIXELS;
761 info->fix.visual = FB_VISUAL_TRUECOLOR;
762 info->fix.type_aux = 0;
763 info->fix.xpanstep = 1; /* doing it in hw */
764 info->fix.ypanstep = 1; /* doing it in hw */
765 info->fix.ywrapstep = 0;
766 info->fix.accel = FB_ACCEL_NONE;
767 info->fix.line_length = fb_pitch;
768
769 info->fix.smem_start = 0;
770 info->fix.smem_len = fb_size;
771
772 info->pseudo_palette = par->pseudo_palette;
773 info->screen_base = (char __iomem *)par->vmalloc;
774 info->screen_size = fb_size;
775
776 info->fbops = &vmw_fb_ops;
777
778 /* 24 depth per default */
779 info->var.red.offset = 16;
780 info->var.green.offset = 8;
781 info->var.blue.offset = 0;
782 info->var.red.length = 8;
783 info->var.green.length = 8;
784 info->var.blue.length = 8;
785 info->var.transp.offset = 0;
786 info->var.transp.length = 0;
787
788 info->var.xres_virtual = fb_width;
789 info->var.yres_virtual = fb_height;
790 info->var.bits_per_pixel = fb_bpp;
791 info->var.xoffset = 0;
792 info->var.yoffset = 0;
793 info->var.activate = FB_ACTIVATE_NOW;
794 info->var.height = -1;
795 info->var.width = -1;
796
797 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
798 info->apertures = alloc_apertures(1);
799 if (!info->apertures) {
800 ret = -ENOMEM;
801 goto err_aper;
802 }
803 info->apertures->ranges[0].base = vmw_priv->vram_start;
804 info->apertures->ranges[0].size = vmw_priv->vram_size;
805
806 /*
807 * Dirty & Deferred IO
808 */
809 par->dirty.x1 = par->dirty.x2 = 0;
810 par->dirty.y1 = par->dirty.y2 = 0;
811 par->dirty.active = true;
812 spin_lock_init(&par->dirty.lock);
813 mutex_init(&par->bo_mutex);
814 info->fbdefio = &vmw_defio;
815 fb_deferred_io_init(info);
816
817 ret = register_framebuffer(info);
818 if (unlikely(ret != 0))
819 goto err_defio;
820
821 vmw_fb_set_par(info);
822
823 return 0;
824
825 err_defio:
826 fb_deferred_io_cleanup(info);
827 err_aper:
828 err_free:
829 vfree(par->vmalloc);
830 err_kms:
831 framebuffer_release(info);
832 vmw_priv->fb_info = NULL;
833
834 return ret;
835 }
836
vmw_fb_close(struct vmw_private * vmw_priv)837 int vmw_fb_close(struct vmw_private *vmw_priv)
838 {
839 struct fb_info *info;
840 struct vmw_fb_par *par;
841
842 if (!vmw_priv->fb_info)
843 return 0;
844
845 info = vmw_priv->fb_info;
846 par = info->par;
847
848 /* ??? order */
849 fb_deferred_io_cleanup(info);
850 cancel_delayed_work_sync(&par->local_work);
851 unregister_framebuffer(info);
852
853 (void) vmw_fb_kms_detach(par, true, true);
854
855 vfree(par->vmalloc);
856 framebuffer_release(info);
857
858 return 0;
859 }
860
vmw_fb_off(struct vmw_private * vmw_priv)861 int vmw_fb_off(struct vmw_private *vmw_priv)
862 {
863 struct fb_info *info;
864 struct vmw_fb_par *par;
865 unsigned long flags;
866
867 if (!vmw_priv->fb_info)
868 return -EINVAL;
869
870 info = vmw_priv->fb_info;
871 par = info->par;
872
873 spin_lock_irqsave(&par->dirty.lock, flags);
874 par->dirty.active = false;
875 spin_unlock_irqrestore(&par->dirty.lock, flags);
876
877 flush_delayed_work(&info->deferred_work);
878 flush_delayed_work(&par->local_work);
879
880 mutex_lock(&par->bo_mutex);
881 drm_modeset_lock_all(vmw_priv->dev);
882 (void) vmw_fb_kms_detach(par, true, false);
883 drm_modeset_unlock_all(vmw_priv->dev);
884 mutex_unlock(&par->bo_mutex);
885
886 return 0;
887 }
888
vmw_fb_on(struct vmw_private * vmw_priv)889 int vmw_fb_on(struct vmw_private *vmw_priv)
890 {
891 struct fb_info *info;
892 struct vmw_fb_par *par;
893 unsigned long flags;
894
895 if (!vmw_priv->fb_info)
896 return -EINVAL;
897
898 info = vmw_priv->fb_info;
899 par = info->par;
900
901 vmw_fb_set_par(info);
902 spin_lock_irqsave(&par->dirty.lock, flags);
903 par->dirty.active = true;
904 spin_unlock_irqrestore(&par->dirty.lock, flags);
905
906 return 0;
907 }
908