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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/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
39struct 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
74static 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->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", par->set_fb->depth,
95 par->set_fb->bits_per_pixel);
96 return 1;
97 }
98
99 return 0;
100}
101
102static 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
160static int vmw_fb_blank(int blank, struct fb_info *info)
161{
162 return 0;
163}
164
165/*
166 * Dirty code
167 */
168
169static void vmw_fb_dirty_flush(struct work_struct *work)
170{
171 struct vmw_fb_par *par = container_of(work, struct vmw_fb_par,
172 local_work.work);
173 struct vmw_private *vmw_priv = par->vmw_priv;
174 struct fb_info *info = vmw_priv->fb_info;
175 unsigned long irq_flags;
176 s32 dst_x1, dst_x2, dst_y1, dst_y2, w, h;
177 u32 cpp, max_x, max_y;
178 struct drm_clip_rect clip;
179 struct drm_framebuffer *cur_fb;
180 u8 *src_ptr, *dst_ptr;
181
182 if (vmw_priv->suspended)
183 return;
184
185 mutex_lock(&par->bo_mutex);
186 cur_fb = par->set_fb;
187 if (!cur_fb)
188 goto out_unlock;
189
190 spin_lock_irqsave(&par->dirty.lock, irq_flags);
191 if (!par->dirty.active) {
192 spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
193 goto out_unlock;
194 }
195
196 /*
197 * Handle panning when copying from vmalloc to framebuffer.
198 * Clip dirty area to framebuffer.
199 */
200 cpp = (cur_fb->bits_per_pixel + 7) / 8;
201 max_x = par->fb_x + cur_fb->width;
202 max_y = par->fb_y + cur_fb->height;
203
204 dst_x1 = par->dirty.x1 - par->fb_x;
205 dst_y1 = par->dirty.y1 - par->fb_y;
206 dst_x1 = max_t(s32, dst_x1, 0);
207 dst_y1 = max_t(s32, dst_y1, 0);
208
209 dst_x2 = par->dirty.x2 - par->fb_x;
210 dst_y2 = par->dirty.y2 - par->fb_y;
211 dst_x2 = min_t(s32, dst_x2, max_x);
212 dst_y2 = min_t(s32, dst_y2, max_y);
213 w = dst_x2 - dst_x1;
214 h = dst_y2 - dst_y1;
215 w = max_t(s32, 0, w);
216 h = max_t(s32, 0, h);
217
218 par->dirty.x1 = par->dirty.x2 = 0;
219 par->dirty.y1 = par->dirty.y2 = 0;
220 spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
221
222 if (w && h) {
223 dst_ptr = (u8 *)par->bo_ptr +
224 (dst_y1 * par->set_fb->pitches[0] + dst_x1 * cpp);
225 src_ptr = (u8 *)par->vmalloc +
226 ((dst_y1 + par->fb_y) * info->fix.line_length +
227 (dst_x1 + par->fb_x) * cpp);
228
229 while (h-- > 0) {
230 memcpy(dst_ptr, src_ptr, w*cpp);
231 dst_ptr += par->set_fb->pitches[0];
232 src_ptr += info->fix.line_length;
233 }
234
235 clip.x1 = dst_x1;
236 clip.x2 = dst_x2;
237 clip.y1 = dst_y1;
238 clip.y2 = dst_y2;
239
240 WARN_ON_ONCE(par->set_fb->funcs->dirty(cur_fb, NULL, 0, 0,
241 &clip, 1));
242 vmw_fifo_flush(vmw_priv, false);
243 }
244out_unlock:
245 mutex_unlock(&par->bo_mutex);
246}
247
248static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
249 unsigned x1, unsigned y1,
250 unsigned width, unsigned height)
251{
252 unsigned long flags;
253 unsigned x2 = x1 + width;
254 unsigned y2 = y1 + height;
255
256 spin_lock_irqsave(&par->dirty.lock, flags);
257 if (par->dirty.x1 == par->dirty.x2) {
258 par->dirty.x1 = x1;
259 par->dirty.y1 = y1;
260 par->dirty.x2 = x2;
261 par->dirty.y2 = y2;
262 /* if we are active start the dirty work
263 * we share the work with the defio system */
264 if (par->dirty.active)
265 schedule_delayed_work(&par->local_work,
266 VMW_DIRTY_DELAY);
267 } else {
268 if (x1 < par->dirty.x1)
269 par->dirty.x1 = x1;
270 if (y1 < par->dirty.y1)
271 par->dirty.y1 = y1;
272 if (x2 > par->dirty.x2)
273 par->dirty.x2 = x2;
274 if (y2 > par->dirty.y2)
275 par->dirty.y2 = y2;
276 }
277 spin_unlock_irqrestore(&par->dirty.lock, flags);
278}
279
280static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
281 struct fb_info *info)
282{
283 struct vmw_fb_par *par = info->par;
284
285 if ((var->xoffset + var->xres) > var->xres_virtual ||
286 (var->yoffset + var->yres) > var->yres_virtual) {
287 DRM_ERROR("Requested panning can not fit in framebuffer\n");
288 return -EINVAL;
289 }
290
291 mutex_lock(&par->bo_mutex);
292 par->fb_x = var->xoffset;
293 par->fb_y = var->yoffset;
294 if (par->set_fb)
295 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y, par->set_fb->width,
296 par->set_fb->height);
297 mutex_unlock(&par->bo_mutex);
298
299 return 0;
300}
301
302static void vmw_deferred_io(struct fb_info *info,
303 struct list_head *pagelist)
304{
305 struct vmw_fb_par *par = info->par;
306 unsigned long start, end, min, max;
307 unsigned long flags;
308 struct page *page;
309 int y1, y2;
310
311 min = ULONG_MAX;
312 max = 0;
313 list_for_each_entry(page, pagelist, lru) {
314 start = page->index << PAGE_SHIFT;
315 end = start + PAGE_SIZE - 1;
316 min = min(min, start);
317 max = max(max, end);
318 }
319
320 if (min < max) {
321 y1 = min / info->fix.line_length;
322 y2 = (max / info->fix.line_length) + 1;
323
324 spin_lock_irqsave(&par->dirty.lock, flags);
325 par->dirty.x1 = 0;
326 par->dirty.y1 = y1;
327 par->dirty.x2 = info->var.xres;
328 par->dirty.y2 = y2;
329 spin_unlock_irqrestore(&par->dirty.lock, flags);
330
331 /*
332 * Since we've already waited on this work once, try to
333 * execute asap.
334 */
335 cancel_delayed_work(&par->local_work);
336 schedule_delayed_work(&par->local_work, 0);
337 }
338};
339
340static struct fb_deferred_io vmw_defio = {
341 .delay = VMW_DIRTY_DELAY,
342 .deferred_io = vmw_deferred_io,
343};
344
345/*
346 * Draw code
347 */
348
349static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
350{
351 cfb_fillrect(info, rect);
352 vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
353 rect->width, rect->height);
354}
355
356static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
357{
358 cfb_copyarea(info, region);
359 vmw_fb_dirty_mark(info->par, region->dx, region->dy,
360 region->width, region->height);
361}
362
363static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image)
364{
365 cfb_imageblit(info, image);
366 vmw_fb_dirty_mark(info->par, image->dx, image->dy,
367 image->width, image->height);
368}
369
370/*
371 * Bring up code
372 */
373
374static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
375 size_t size, struct vmw_dma_buffer **out)
376{
377 struct vmw_dma_buffer *vmw_bo;
378 int ret;
379
380 (void) ttm_write_lock(&vmw_priv->reservation_sem, false);
381
382 vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
383 if (!vmw_bo) {
384 ret = -ENOMEM;
385 goto err_unlock;
386 }
387
388 ret = vmw_dmabuf_init(vmw_priv, vmw_bo, size,
389 &vmw_sys_placement,
390 false,
391 &vmw_dmabuf_bo_free);
392 if (unlikely(ret != 0))
393 goto err_unlock; /* init frees the buffer on failure */
394
395 *out = vmw_bo;
396 ttm_write_unlock(&vmw_priv->reservation_sem);
397
398 return 0;
399
400err_unlock:
401 ttm_write_unlock(&vmw_priv->reservation_sem);
402 return ret;
403}
404
405static int vmw_fb_compute_depth(struct fb_var_screeninfo *var,
406 int *depth)
407{
408 switch (var->bits_per_pixel) {
409 case 32:
410 *depth = (var->transp.length > 0) ? 32 : 24;
411 break;
412 default:
413 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
414 return -EINVAL;
415 }
416
417 return 0;
418}
419
420static int vmw_fb_kms_detach(struct vmw_fb_par *par,
421 bool detach_bo,
422 bool unref_bo)
423{
424 struct drm_framebuffer *cur_fb = par->set_fb;
425 int ret;
426
427 /* Detach the KMS framebuffer from crtcs */
428 if (par->set_mode) {
429 struct drm_mode_set set;
430
431 set.crtc = par->crtc;
432 set.x = 0;
433 set.y = 0;
434 set.mode = NULL;
435 set.fb = NULL;
436 set.num_connectors = 1;
437 set.connectors = &par->con;
438 ret = drm_mode_set_config_internal(&set);
439 if (ret) {
440 DRM_ERROR("Could not unset a mode.\n");
441 return ret;
442 }
443 drm_mode_destroy(par->vmw_priv->dev, par->set_mode);
444 par->set_mode = NULL;
445 }
446
447 if (cur_fb) {
448 drm_framebuffer_unreference(cur_fb);
449 par->set_fb = NULL;
450 }
451
452 if (par->vmw_bo && detach_bo) {
453 if (par->bo_ptr) {
454 ttm_bo_kunmap(&par->map);
455 par->bo_ptr = NULL;
456 }
457 if (unref_bo)
458 vmw_dmabuf_unreference(&par->vmw_bo);
459 else
460 vmw_dmabuf_unpin(par->vmw_priv, par->vmw_bo, false);
461 }
462
463 return 0;
464}
465
466static int vmw_fb_kms_framebuffer(struct fb_info *info)
467{
468 struct drm_mode_fb_cmd mode_cmd;
469 struct vmw_fb_par *par = info->par;
470 struct fb_var_screeninfo *var = &info->var;
471 struct drm_framebuffer *cur_fb;
472 struct vmw_framebuffer *vfb;
473 int ret = 0;
474 size_t new_bo_size;
475
476 ret = vmw_fb_compute_depth(var, &mode_cmd.depth);
477 if (ret)
478 return ret;
479
480 mode_cmd.width = var->xres;
481 mode_cmd.height = var->yres;
482 mode_cmd.bpp = var->bits_per_pixel;
483 mode_cmd.pitch = ((mode_cmd.bpp + 7) / 8) * mode_cmd.width;
484
485 cur_fb = par->set_fb;
486 if (cur_fb && cur_fb->width == mode_cmd.width &&
487 cur_fb->height == mode_cmd.height &&
488 cur_fb->bits_per_pixel == mode_cmd.bpp &&
489 cur_fb->depth == mode_cmd.depth &&
490 cur_fb->pitches[0] == mode_cmd.pitch)
491 return 0;
492
493 /* Need new buffer object ? */
494 new_bo_size = (size_t) mode_cmd.pitch * (size_t) mode_cmd.height;
495 ret = vmw_fb_kms_detach(par,
496 par->bo_size < new_bo_size ||
497 par->bo_size > 2*new_bo_size,
498 true);
499 if (ret)
500 return ret;
501
502 if (!par->vmw_bo) {
503 ret = vmw_fb_create_bo(par->vmw_priv, new_bo_size,
504 &par->vmw_bo);
505 if (ret) {
506 DRM_ERROR("Failed creating a buffer object for "
507 "fbdev.\n");
508 return ret;
509 }
510 par->bo_size = new_bo_size;
511 }
512
513 vfb = vmw_kms_new_framebuffer(par->vmw_priv, par->vmw_bo, NULL,
514 true, &mode_cmd);
515 if (IS_ERR(vfb))
516 return PTR_ERR(vfb);
517
518 par->set_fb = &vfb->base;
519
520 if (!par->bo_ptr) {
521 /*
522 * Pin before mapping. Since we don't know in what placement
523 * to pin, call into KMS to do it for us.
524 */
525 ret = vfb->pin(vfb);
526 if (ret) {
527 DRM_ERROR("Could not pin the fbdev framebuffer.\n");
528 return ret;
529 }
530
531 ret = ttm_bo_kmap(&par->vmw_bo->base, 0,
532 par->vmw_bo->base.num_pages, &par->map);
533 if (ret) {
534 vfb->unpin(vfb);
535 DRM_ERROR("Could not map the fbdev framebuffer.\n");
536 return ret;
537 }
538
539 par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &par->bo_iowrite);
540 }
541
542 return 0;
543}
544
545static int vmw_fb_set_par(struct fb_info *info)
546{
547 struct vmw_fb_par *par = info->par;
548 struct vmw_private *vmw_priv = par->vmw_priv;
549 struct drm_mode_set set;
550 struct fb_var_screeninfo *var = &info->var;
551 struct drm_display_mode new_mode = { DRM_MODE("fb_mode",
552 DRM_MODE_TYPE_DRIVER,
553 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
554 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
555 };
556 struct drm_display_mode *old_mode;
557 struct drm_display_mode *mode;
558 int ret;
559
560 old_mode = par->set_mode;
561 mode = drm_mode_duplicate(vmw_priv->dev, &new_mode);
562 if (!mode) {
563 DRM_ERROR("Could not create new fb mode.\n");
564 return -ENOMEM;
565 }
566
567 mode->hdisplay = var->xres;
568 mode->vdisplay = var->yres;
569 vmw_guess_mode_timing(mode);
570
571 if (old_mode && drm_mode_equal(old_mode, mode)) {
572 drm_mode_destroy(vmw_priv->dev, mode);
573 mode = old_mode;
574 old_mode = NULL;
575 } else if (!vmw_kms_validate_mode_vram(vmw_priv,
576 mode->hdisplay *
577 DIV_ROUND_UP(var->bits_per_pixel, 8),
578 mode->vdisplay)) {
579 drm_mode_destroy(vmw_priv->dev, mode);
580 return -EINVAL;
581 }
582
583 mutex_lock(&par->bo_mutex);
584 drm_modeset_lock_all(vmw_priv->dev);
585 ret = vmw_fb_kms_framebuffer(info);
586 if (ret)
587 goto out_unlock;
588
589 par->fb_x = var->xoffset;
590 par->fb_y = var->yoffset;
591
592 set.crtc = par->crtc;
593 set.x = 0;
594 set.y = 0;
595 set.mode = mode;
596 set.fb = par->set_fb;
597 set.num_connectors = 1;
598 set.connectors = &par->con;
599
600 ret = drm_mode_set_config_internal(&set);
601 if (ret)
602 goto out_unlock;
603
604 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y,
605 par->set_fb->width, par->set_fb->height);
606
607 /* If there already was stuff dirty we wont
608 * schedule a new work, so lets do it now */
609
610 schedule_delayed_work(&par->local_work, 0);
611
612out_unlock:
613 if (old_mode)
614 drm_mode_destroy(vmw_priv->dev, old_mode);
615 par->set_mode = mode;
616
617 drm_modeset_unlock_all(vmw_priv->dev);
618 mutex_unlock(&par->bo_mutex);
619
620 return ret;
621}
622
623
624static struct fb_ops vmw_fb_ops = {
625 .owner = THIS_MODULE,
626 .fb_check_var = vmw_fb_check_var,
627 .fb_set_par = vmw_fb_set_par,
628 .fb_setcolreg = vmw_fb_setcolreg,
629 .fb_fillrect = vmw_fb_fillrect,
630 .fb_copyarea = vmw_fb_copyarea,
631 .fb_imageblit = vmw_fb_imageblit,
632 .fb_pan_display = vmw_fb_pan_display,
633 .fb_blank = vmw_fb_blank,
634};
635
636int vmw_fb_init(struct vmw_private *vmw_priv)
637{
638 struct device *device = &vmw_priv->dev->pdev->dev;
639 struct vmw_fb_par *par;
640 struct fb_info *info;
641 unsigned fb_width, fb_height;
642 unsigned fb_bpp, fb_depth, fb_offset, fb_pitch, fb_size;
643 struct drm_display_mode *init_mode;
644 int ret;
645
646 fb_bpp = 32;
647 fb_depth = 24;
648
649 /* XXX As shouldn't these be as well. */
650 fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
651 fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
652
653 fb_pitch = fb_width * fb_bpp / 8;
654 fb_size = fb_pitch * fb_height;
655 fb_offset = vmw_read(vmw_priv, SVGA_REG_FB_OFFSET);
656
657 info = framebuffer_alloc(sizeof(*par), device);
658 if (!info)
659 return -ENOMEM;
660
661 /*
662 * Par
663 */
664 vmw_priv->fb_info = info;
665 par = info->par;
666 memset(par, 0, sizeof(*par));
667 INIT_DELAYED_WORK(&par->local_work, &vmw_fb_dirty_flush);
668 par->vmw_priv = vmw_priv;
669 par->vmalloc = NULL;
670 par->max_width = fb_width;
671 par->max_height = fb_height;
672
673 drm_modeset_lock_all(vmw_priv->dev);
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 drm_modeset_unlock_all(vmw_priv->dev);
679 goto err_kms;
680 }
681
682 info->var.xres = init_mode->hdisplay;
683 info->var.yres = init_mode->vdisplay;
684 drm_modeset_unlock_all(vmw_priv->dev);
685
686 /*
687 * Create buffers and alloc memory
688 */
689 par->vmalloc = vzalloc(fb_size);
690 if (unlikely(par->vmalloc == NULL)) {
691 ret = -ENOMEM;
692 goto err_free;
693 }
694
695 /*
696 * Fixed and var
697 */
698 strcpy(info->fix.id, "svgadrmfb");
699 info->fix.type = FB_TYPE_PACKED_PIXELS;
700 info->fix.visual = FB_VISUAL_TRUECOLOR;
701 info->fix.type_aux = 0;
702 info->fix.xpanstep = 1; /* doing it in hw */
703 info->fix.ypanstep = 1; /* doing it in hw */
704 info->fix.ywrapstep = 0;
705 info->fix.accel = FB_ACCEL_NONE;
706 info->fix.line_length = fb_pitch;
707
708 info->fix.smem_start = 0;
709 info->fix.smem_len = fb_size;
710
711 info->pseudo_palette = par->pseudo_palette;
712 info->screen_base = (char __iomem *)par->vmalloc;
713 info->screen_size = fb_size;
714
715 info->flags = FBINFO_DEFAULT;
716 info->fbops = &vmw_fb_ops;
717
718 /* 24 depth per default */
719 info->var.red.offset = 16;
720 info->var.green.offset = 8;
721 info->var.blue.offset = 0;
722 info->var.red.length = 8;
723 info->var.green.length = 8;
724 info->var.blue.length = 8;
725 info->var.transp.offset = 0;
726 info->var.transp.length = 0;
727
728 info->var.xres_virtual = fb_width;
729 info->var.yres_virtual = fb_height;
730 info->var.bits_per_pixel = fb_bpp;
731 info->var.xoffset = 0;
732 info->var.yoffset = 0;
733 info->var.activate = FB_ACTIVATE_NOW;
734 info->var.height = -1;
735 info->var.width = -1;
736
737 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
738 info->apertures = alloc_apertures(1);
739 if (!info->apertures) {
740 ret = -ENOMEM;
741 goto err_aper;
742 }
743 info->apertures->ranges[0].base = vmw_priv->vram_start;
744 info->apertures->ranges[0].size = vmw_priv->vram_size;
745
746 /*
747 * Dirty & Deferred IO
748 */
749 par->dirty.x1 = par->dirty.x2 = 0;
750 par->dirty.y1 = par->dirty.y2 = 0;
751 par->dirty.active = true;
752 spin_lock_init(&par->dirty.lock);
753 mutex_init(&par->bo_mutex);
754 info->fbdefio = &vmw_defio;
755 fb_deferred_io_init(info);
756
757 ret = register_framebuffer(info);
758 if (unlikely(ret != 0))
759 goto err_defio;
760
761 vmw_fb_set_par(info);
762
763 return 0;
764
765err_defio:
766 fb_deferred_io_cleanup(info);
767err_aper:
768err_free:
769 vfree(par->vmalloc);
770err_kms:
771 framebuffer_release(info);
772 vmw_priv->fb_info = NULL;
773
774 return ret;
775}
776
777int vmw_fb_close(struct vmw_private *vmw_priv)
778{
779 struct fb_info *info;
780 struct vmw_fb_par *par;
781
782 if (!vmw_priv->fb_info)
783 return 0;
784
785 info = vmw_priv->fb_info;
786 par = info->par;
787
788 /* ??? order */
789 fb_deferred_io_cleanup(info);
790 cancel_delayed_work_sync(&par->local_work);
791 unregister_framebuffer(info);
792
793 (void) vmw_fb_kms_detach(par, true, true);
794
795 vfree(par->vmalloc);
796 framebuffer_release(info);
797
798 return 0;
799}
800
801int vmw_fb_off(struct vmw_private *vmw_priv)
802{
803 struct fb_info *info;
804 struct vmw_fb_par *par;
805 unsigned long flags;
806
807 if (!vmw_priv->fb_info)
808 return -EINVAL;
809
810 info = vmw_priv->fb_info;
811 par = info->par;
812
813 spin_lock_irqsave(&par->dirty.lock, flags);
814 par->dirty.active = false;
815 spin_unlock_irqrestore(&par->dirty.lock, flags);
816
817 flush_delayed_work(&info->deferred_work);
818 flush_delayed_work(&par->local_work);
819
820 mutex_lock(&par->bo_mutex);
821 (void) vmw_fb_kms_detach(par, true, false);
822 mutex_unlock(&par->bo_mutex);
823
824 return 0;
825}
826
827int vmw_fb_on(struct vmw_private *vmw_priv)
828{
829 struct fb_info *info;
830 struct vmw_fb_par *par;
831 unsigned long flags;
832
833 if (!vmw_priv->fb_info)
834 return -EINVAL;
835
836 info = vmw_priv->fb_info;
837 par = info->par;
838
839 vmw_fb_set_par(info);
840 spin_lock_irqsave(&par->dirty.lock, flags);
841 par->dirty.active = true;
842 spin_unlock_irqrestore(&par->dirty.lock, flags);
843
844 return 0;
845}
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_bo_reserve(&vbo->base, false, false, NULL);
199 virtual = vmw_bo_map_and_cache(vbo);
200 if (!virtual)
201 goto out_unreserve;
202
203 spin_lock_irqsave(&par->dirty.lock, irq_flags);
204 if (!par->dirty.active) {
205 spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
206 goto out_unreserve;
207 }
208
209 /*
210 * Handle panning when copying from vmalloc to framebuffer.
211 * Clip dirty area to framebuffer.
212 */
213 cpp = cur_fb->format->cpp[0];
214 max_x = par->fb_x + cur_fb->width;
215 max_y = par->fb_y + cur_fb->height;
216
217 dst_x1 = par->dirty.x1 - par->fb_x;
218 dst_y1 = par->dirty.y1 - par->fb_y;
219 dst_x1 = max_t(s32, dst_x1, 0);
220 dst_y1 = max_t(s32, dst_y1, 0);
221
222 dst_x2 = par->dirty.x2 - par->fb_x;
223 dst_y2 = par->dirty.y2 - par->fb_y;
224 dst_x2 = min_t(s32, dst_x2, max_x);
225 dst_y2 = min_t(s32, dst_y2, max_y);
226 w = dst_x2 - dst_x1;
227 h = dst_y2 - dst_y1;
228 w = max_t(s32, 0, w);
229 h = max_t(s32, 0, h);
230
231 par->dirty.x1 = par->dirty.x2 = 0;
232 par->dirty.y1 = par->dirty.y2 = 0;
233 spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
234
235 if (w && h) {
236 dst_ptr = (u8 *)virtual +
237 (dst_y1 * par->set_fb->pitches[0] + dst_x1 * cpp);
238 src_ptr = (u8 *)par->vmalloc +
239 ((dst_y1 + par->fb_y) * info->fix.line_length +
240 (dst_x1 + par->fb_x) * cpp);
241
242 while (h-- > 0) {
243 memcpy(dst_ptr, src_ptr, w*cpp);
244 dst_ptr += par->set_fb->pitches[0];
245 src_ptr += info->fix.line_length;
246 }
247
248 clip.x1 = dst_x1;
249 clip.x2 = dst_x2;
250 clip.y1 = dst_y1;
251 clip.y2 = dst_y2;
252 }
253
254out_unreserve:
255 ttm_bo_unreserve(&vbo->base);
256 if (w && h) {
257 WARN_ON_ONCE(par->set_fb->funcs->dirty(cur_fb, NULL, 0, 0,
258 &clip, 1));
259 vmw_cmd_flush(vmw_priv, false);
260 }
261out_unlock:
262 mutex_unlock(&par->bo_mutex);
263}
264
265static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
266 unsigned x1, unsigned y1,
267 unsigned width, unsigned height)
268{
269 unsigned long flags;
270 unsigned x2 = x1 + width;
271 unsigned y2 = y1 + height;
272
273 spin_lock_irqsave(&par->dirty.lock, flags);
274 if (par->dirty.x1 == par->dirty.x2) {
275 par->dirty.x1 = x1;
276 par->dirty.y1 = y1;
277 par->dirty.x2 = x2;
278 par->dirty.y2 = y2;
279 /* if we are active start the dirty work
280 * we share the work with the defio system */
281 if (par->dirty.active)
282 schedule_delayed_work(&par->local_work,
283 VMW_DIRTY_DELAY);
284 } else {
285 if (x1 < par->dirty.x1)
286 par->dirty.x1 = x1;
287 if (y1 < par->dirty.y1)
288 par->dirty.y1 = y1;
289 if (x2 > par->dirty.x2)
290 par->dirty.x2 = x2;
291 if (y2 > par->dirty.y2)
292 par->dirty.y2 = y2;
293 }
294 spin_unlock_irqrestore(&par->dirty.lock, flags);
295}
296
297static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
298 struct fb_info *info)
299{
300 struct vmw_fb_par *par = info->par;
301
302 if ((var->xoffset + var->xres) > var->xres_virtual ||
303 (var->yoffset + var->yres) > var->yres_virtual) {
304 DRM_ERROR("Requested panning can not fit in framebuffer\n");
305 return -EINVAL;
306 }
307
308 mutex_lock(&par->bo_mutex);
309 par->fb_x = var->xoffset;
310 par->fb_y = var->yoffset;
311 if (par->set_fb)
312 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y, par->set_fb->width,
313 par->set_fb->height);
314 mutex_unlock(&par->bo_mutex);
315
316 return 0;
317}
318
319static void vmw_deferred_io(struct fb_info *info,
320 struct list_head *pagelist)
321{
322 struct vmw_fb_par *par = info->par;
323 unsigned long start, end, min, max;
324 unsigned long flags;
325 struct page *page;
326 int y1, y2;
327
328 min = ULONG_MAX;
329 max = 0;
330 list_for_each_entry(page, pagelist, lru) {
331 start = page->index << PAGE_SHIFT;
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
357static 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
366static 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
373static 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
380static 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
391static 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 vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
398 if (!vmw_bo) {
399 ret = -ENOMEM;
400 goto err_unlock;
401 }
402
403 ret = vmw_bo_init(vmw_priv, vmw_bo, size,
404 &vmw_sys_placement,
405 false, false,
406 &vmw_bo_bo_free);
407 if (unlikely(ret != 0))
408 goto err_unlock; /* init frees the buffer on failure */
409
410 *out = vmw_bo;
411
412err_unlock:
413 return ret;
414}
415
416static int vmw_fb_compute_depth(struct fb_var_screeninfo *var,
417 int *depth)
418{
419 switch (var->bits_per_pixel) {
420 case 32:
421 *depth = (var->transp.length > 0) ? 32 : 24;
422 break;
423 default:
424 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
425 return -EINVAL;
426 }
427
428 return 0;
429}
430
431static int vmwgfx_set_config_internal(struct drm_mode_set *set)
432{
433 struct drm_crtc *crtc = set->crtc;
434 struct drm_modeset_acquire_ctx ctx;
435 int ret;
436
437 drm_modeset_acquire_init(&ctx, 0);
438
439restart:
440 ret = crtc->funcs->set_config(set, &ctx);
441
442 if (ret == -EDEADLK) {
443 drm_modeset_backoff(&ctx);
444 goto restart;
445 }
446
447 drm_modeset_drop_locks(&ctx);
448 drm_modeset_acquire_fini(&ctx);
449
450 return ret;
451}
452
453static int vmw_fb_kms_detach(struct vmw_fb_par *par,
454 bool detach_bo,
455 bool unref_bo)
456{
457 struct drm_framebuffer *cur_fb = par->set_fb;
458 int ret;
459
460 /* Detach the KMS framebuffer from crtcs */
461 if (par->set_mode) {
462 struct drm_mode_set set;
463
464 set.crtc = par->crtc;
465 set.x = 0;
466 set.y = 0;
467 set.mode = NULL;
468 set.fb = NULL;
469 set.num_connectors = 0;
470 set.connectors = &par->con;
471 ret = vmwgfx_set_config_internal(&set);
472 if (ret) {
473 DRM_ERROR("Could not unset a mode.\n");
474 return ret;
475 }
476 drm_mode_destroy(&par->vmw_priv->drm, par->set_mode);
477 par->set_mode = NULL;
478 }
479
480 if (cur_fb) {
481 drm_framebuffer_put(cur_fb);
482 par->set_fb = NULL;
483 }
484
485 if (par->vmw_bo && detach_bo && unref_bo)
486 vmw_bo_unreference(&par->vmw_bo);
487
488 return 0;
489}
490
491static int vmw_fb_kms_framebuffer(struct fb_info *info)
492{
493 struct drm_mode_fb_cmd2 mode_cmd;
494 struct vmw_fb_par *par = info->par;
495 struct fb_var_screeninfo *var = &info->var;
496 struct drm_framebuffer *cur_fb;
497 struct vmw_framebuffer *vfb;
498 int ret = 0, depth;
499 size_t new_bo_size;
500
501 ret = vmw_fb_compute_depth(var, &depth);
502 if (ret)
503 return ret;
504
505 mode_cmd.width = var->xres;
506 mode_cmd.height = var->yres;
507 mode_cmd.pitches[0] = ((var->bits_per_pixel + 7) / 8) * mode_cmd.width;
508 mode_cmd.pixel_format =
509 drm_mode_legacy_fb_format(var->bits_per_pixel, depth);
510
511 cur_fb = par->set_fb;
512 if (cur_fb && cur_fb->width == mode_cmd.width &&
513 cur_fb->height == mode_cmd.height &&
514 cur_fb->format->format == mode_cmd.pixel_format &&
515 cur_fb->pitches[0] == mode_cmd.pitches[0])
516 return 0;
517
518 /* Need new buffer object ? */
519 new_bo_size = (size_t) mode_cmd.pitches[0] * (size_t) mode_cmd.height;
520 ret = vmw_fb_kms_detach(par,
521 par->bo_size < new_bo_size ||
522 par->bo_size > 2*new_bo_size,
523 true);
524 if (ret)
525 return ret;
526
527 if (!par->vmw_bo) {
528 ret = vmw_fb_create_bo(par->vmw_priv, new_bo_size,
529 &par->vmw_bo);
530 if (ret) {
531 DRM_ERROR("Failed creating a buffer object for "
532 "fbdev.\n");
533 return ret;
534 }
535 par->bo_size = new_bo_size;
536 }
537
538 vfb = vmw_kms_new_framebuffer(par->vmw_priv, par->vmw_bo, NULL,
539 true, &mode_cmd);
540 if (IS_ERR(vfb))
541 return PTR_ERR(vfb);
542
543 par->set_fb = &vfb->base;
544
545 return 0;
546}
547
548static int vmw_fb_set_par(struct fb_info *info)
549{
550 struct vmw_fb_par *par = info->par;
551 struct vmw_private *vmw_priv = par->vmw_priv;
552 struct drm_mode_set set;
553 struct fb_var_screeninfo *var = &info->var;
554 struct drm_display_mode new_mode = { DRM_MODE("fb_mode",
555 DRM_MODE_TYPE_DRIVER,
556 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
557 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
558 };
559 struct drm_display_mode *mode;
560 int ret;
561
562 mode = drm_mode_duplicate(&vmw_priv->drm, &new_mode);
563 if (!mode) {
564 DRM_ERROR("Could not create new fb mode.\n");
565 return -ENOMEM;
566 }
567
568 mode->hdisplay = var->xres;
569 mode->vdisplay = var->yres;
570 vmw_guess_mode_timing(mode);
571
572 if (!vmw_kms_validate_mode_vram(vmw_priv,
573 mode->hdisplay *
574 DIV_ROUND_UP(var->bits_per_pixel, 8),
575 mode->vdisplay)) {
576 drm_mode_destroy(&vmw_priv->drm, mode);
577 return -EINVAL;
578 }
579
580 mutex_lock(&par->bo_mutex);
581 ret = vmw_fb_kms_framebuffer(info);
582 if (ret)
583 goto out_unlock;
584
585 par->fb_x = var->xoffset;
586 par->fb_y = var->yoffset;
587
588 set.crtc = par->crtc;
589 set.x = 0;
590 set.y = 0;
591 set.mode = mode;
592 set.fb = par->set_fb;
593 set.num_connectors = 1;
594 set.connectors = &par->con;
595
596 ret = vmwgfx_set_config_internal(&set);
597 if (ret)
598 goto out_unlock;
599
600 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y,
601 par->set_fb->width, par->set_fb->height);
602
603 /* If there already was stuff dirty we wont
604 * schedule a new work, so lets do it now */
605
606 schedule_delayed_work(&par->local_work, 0);
607
608out_unlock:
609 if (par->set_mode)
610 drm_mode_destroy(&vmw_priv->drm, par->set_mode);
611 par->set_mode = mode;
612
613 mutex_unlock(&par->bo_mutex);
614
615 return ret;
616}
617
618
619static const struct fb_ops vmw_fb_ops = {
620 .owner = THIS_MODULE,
621 .fb_check_var = vmw_fb_check_var,
622 .fb_set_par = vmw_fb_set_par,
623 .fb_setcolreg = vmw_fb_setcolreg,
624 .fb_fillrect = vmw_fb_fillrect,
625 .fb_copyarea = vmw_fb_copyarea,
626 .fb_imageblit = vmw_fb_imageblit,
627 .fb_pan_display = vmw_fb_pan_display,
628 .fb_blank = vmw_fb_blank,
629};
630
631int vmw_fb_init(struct vmw_private *vmw_priv)
632{
633 struct device *device = vmw_priv->drm.dev;
634 struct vmw_fb_par *par;
635 struct fb_info *info;
636 unsigned fb_width, fb_height;
637 unsigned int fb_bpp, fb_pitch, fb_size;
638 struct drm_display_mode *init_mode;
639 int ret;
640
641 fb_bpp = 32;
642
643 /* XXX As shouldn't these be as well. */
644 fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
645 fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
646
647 fb_pitch = fb_width * fb_bpp / 8;
648 fb_size = fb_pitch * fb_height;
649
650 info = framebuffer_alloc(sizeof(*par), device);
651 if (!info)
652 return -ENOMEM;
653
654 /*
655 * Par
656 */
657 vmw_priv->fb_info = info;
658 par = info->par;
659 memset(par, 0, sizeof(*par));
660 INIT_DELAYED_WORK(&par->local_work, &vmw_fb_dirty_flush);
661 par->vmw_priv = vmw_priv;
662 par->vmalloc = NULL;
663 par->max_width = fb_width;
664 par->max_height = fb_height;
665
666 ret = vmw_kms_fbdev_init_data(vmw_priv, 0, par->max_width,
667 par->max_height, &par->con,
668 &par->crtc, &init_mode);
669 if (ret)
670 goto err_kms;
671
672 info->var.xres = init_mode->hdisplay;
673 info->var.yres = init_mode->vdisplay;
674
675 /*
676 * Create buffers and alloc memory
677 */
678 par->vmalloc = vzalloc(fb_size);
679 if (unlikely(par->vmalloc == NULL)) {
680 ret = -ENOMEM;
681 goto err_free;
682 }
683
684 /*
685 * Fixed and var
686 */
687 strcpy(info->fix.id, "svgadrmfb");
688 info->fix.type = FB_TYPE_PACKED_PIXELS;
689 info->fix.visual = FB_VISUAL_TRUECOLOR;
690 info->fix.type_aux = 0;
691 info->fix.xpanstep = 1; /* doing it in hw */
692 info->fix.ypanstep = 1; /* doing it in hw */
693 info->fix.ywrapstep = 0;
694 info->fix.accel = FB_ACCEL_NONE;
695 info->fix.line_length = fb_pitch;
696
697 info->fix.smem_start = 0;
698 info->fix.smem_len = fb_size;
699
700 info->pseudo_palette = par->pseudo_palette;
701 info->screen_base = (char __iomem *)par->vmalloc;
702 info->screen_size = fb_size;
703
704 info->fbops = &vmw_fb_ops;
705
706 /* 24 depth per default */
707 info->var.red.offset = 16;
708 info->var.green.offset = 8;
709 info->var.blue.offset = 0;
710 info->var.red.length = 8;
711 info->var.green.length = 8;
712 info->var.blue.length = 8;
713 info->var.transp.offset = 0;
714 info->var.transp.length = 0;
715
716 info->var.xres_virtual = fb_width;
717 info->var.yres_virtual = fb_height;
718 info->var.bits_per_pixel = fb_bpp;
719 info->var.xoffset = 0;
720 info->var.yoffset = 0;
721 info->var.activate = FB_ACTIVATE_NOW;
722 info->var.height = -1;
723 info->var.width = -1;
724
725 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
726 info->apertures = alloc_apertures(1);
727 if (!info->apertures) {
728 ret = -ENOMEM;
729 goto err_aper;
730 }
731 info->apertures->ranges[0].base = vmw_priv->vram_start;
732 info->apertures->ranges[0].size = vmw_priv->vram_size;
733
734 /*
735 * Dirty & Deferred IO
736 */
737 par->dirty.x1 = par->dirty.x2 = 0;
738 par->dirty.y1 = par->dirty.y2 = 0;
739 par->dirty.active = true;
740 spin_lock_init(&par->dirty.lock);
741 mutex_init(&par->bo_mutex);
742 info->fbdefio = &vmw_defio;
743 fb_deferred_io_init(info);
744
745 ret = register_framebuffer(info);
746 if (unlikely(ret != 0))
747 goto err_defio;
748
749 vmw_fb_set_par(info);
750
751 return 0;
752
753err_defio:
754 fb_deferred_io_cleanup(info);
755err_aper:
756err_free:
757 vfree(par->vmalloc);
758err_kms:
759 framebuffer_release(info);
760 vmw_priv->fb_info = NULL;
761
762 return ret;
763}
764
765int vmw_fb_close(struct vmw_private *vmw_priv)
766{
767 struct fb_info *info;
768 struct vmw_fb_par *par;
769
770 if (!vmw_priv->fb_info)
771 return 0;
772
773 info = vmw_priv->fb_info;
774 par = info->par;
775
776 /* ??? order */
777 fb_deferred_io_cleanup(info);
778 cancel_delayed_work_sync(&par->local_work);
779 unregister_framebuffer(info);
780
781 mutex_lock(&par->bo_mutex);
782 (void) vmw_fb_kms_detach(par, true, true);
783 mutex_unlock(&par->bo_mutex);
784
785 vfree(par->vmalloc);
786 framebuffer_release(info);
787
788 return 0;
789}
790
791int vmw_fb_off(struct vmw_private *vmw_priv)
792{
793 struct fb_info *info;
794 struct vmw_fb_par *par;
795 unsigned long flags;
796
797 if (!vmw_priv->fb_info)
798 return -EINVAL;
799
800 info = vmw_priv->fb_info;
801 par = info->par;
802
803 spin_lock_irqsave(&par->dirty.lock, flags);
804 par->dirty.active = false;
805 spin_unlock_irqrestore(&par->dirty.lock, flags);
806
807 flush_delayed_work(&info->deferred_work);
808 flush_delayed_work(&par->local_work);
809
810 return 0;
811}
812
813int vmw_fb_on(struct vmw_private *vmw_priv)
814{
815 struct fb_info *info;
816 struct vmw_fb_par *par;
817 unsigned long flags;
818
819 if (!vmw_priv->fb_info)
820 return -EINVAL;
821
822 info = vmw_priv->fb_info;
823 par = info->par;
824
825 spin_lock_irqsave(&par->dirty.lock, flags);
826 par->dirty.active = true;
827 spin_unlock_irqrestore(&par->dirty.lock, flags);
828
829 /*
830 * Need to reschedule a dirty update, because otherwise that's
831 * only done in dirty_mark() if the previous coalesced
832 * dirty region was empty.
833 */
834 schedule_delayed_work(&par->local_work, 0);
835
836 return 0;
837}