1 /* $NetBSD: vmwgfx_fb.c,v 1.3 2021/12/18 23:45:45 riastradh Exp $ */
2
3 /**************************************************************************
4 *
5 * Copyright © 2007 David Airlie
6 * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
7 * All Rights Reserved.
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the
11 * "Software"), to deal in the Software without restriction, including
12 * without limitation the rights to use, copy, modify, merge, publish,
13 * distribute, sub license, and/or sell copies of the Software, and to
14 * permit persons to whom the Software is furnished to do so, subject to
15 * the following conditions:
16 *
17 * The above copyright notice and this permission notice (including the
18 * next paragraph) shall be included in all copies or substantial portions
19 * of the Software.
20 *
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
24 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
25 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
26 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
27 * USE OR OTHER DEALINGS IN THE SOFTWARE.
28 *
29 **************************************************************************/
30
31 #include <sys/cdefs.h>
32 __KERNEL_RCSID(0, "$NetBSD: vmwgfx_fb.c,v 1.3 2021/12/18 23:45:45 riastradh Exp $");
33
34 #include <linux/pci.h>
35
36 #include <drm/drm_fourcc.h>
37 #include <drm/ttm/ttm_placement.h>
38
39 #include "vmwgfx_drv.h"
40 #include "vmwgfx_kms.h"
41
42 #define VMW_DIRTY_DELAY (HZ / 30)
43
44 struct vmw_fb_par {
45 struct vmw_private *vmw_priv;
46
47 void *vmalloc;
48
49 struct mutex bo_mutex;
50 struct vmw_buffer_object *vmw_bo;
51 unsigned bo_size;
52 struct drm_framebuffer *set_fb;
53 struct drm_display_mode *set_mode;
54 u32 fb_x;
55 u32 fb_y;
56 bool bo_iowrite;
57
58 u32 pseudo_palette[17];
59
60 unsigned max_width;
61 unsigned max_height;
62
63 struct {
64 spinlock_t lock;
65 bool active;
66 unsigned x1;
67 unsigned y1;
68 unsigned x2;
69 unsigned y2;
70 } dirty;
71
72 struct drm_crtc *crtc;
73 struct drm_connector *con;
74 struct delayed_work local_work;
75 };
76
vmw_fb_setcolreg(unsigned regno,unsigned red,unsigned green,unsigned blue,unsigned transp,struct fb_info * info)77 static int vmw_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
78 unsigned blue, unsigned transp,
79 struct fb_info *info)
80 {
81 struct vmw_fb_par *par = info->par;
82 u32 *pal = par->pseudo_palette;
83
84 if (regno > 15) {
85 DRM_ERROR("Bad regno %u.\n", regno);
86 return 1;
87 }
88
89 switch (par->set_fb->format->depth) {
90 case 24:
91 case 32:
92 pal[regno] = ((red & 0xff00) << 8) |
93 (green & 0xff00) |
94 ((blue & 0xff00) >> 8);
95 break;
96 default:
97 DRM_ERROR("Bad depth %u, bpp %u.\n",
98 par->set_fb->format->depth,
99 par->set_fb->format->cpp[0] * 8);
100 return 1;
101 }
102
103 return 0;
104 }
105
vmw_fb_check_var(struct fb_var_screeninfo * var,struct fb_info * info)106 static int vmw_fb_check_var(struct fb_var_screeninfo *var,
107 struct fb_info *info)
108 {
109 int depth = var->bits_per_pixel;
110 struct vmw_fb_par *par = info->par;
111 struct vmw_private *vmw_priv = par->vmw_priv;
112
113 switch (var->bits_per_pixel) {
114 case 32:
115 depth = (var->transp.length > 0) ? 32 : 24;
116 break;
117 default:
118 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
119 return -EINVAL;
120 }
121
122 switch (depth) {
123 case 24:
124 var->red.offset = 16;
125 var->green.offset = 8;
126 var->blue.offset = 0;
127 var->red.length = 8;
128 var->green.length = 8;
129 var->blue.length = 8;
130 var->transp.length = 0;
131 var->transp.offset = 0;
132 break;
133 case 32:
134 var->red.offset = 16;
135 var->green.offset = 8;
136 var->blue.offset = 0;
137 var->red.length = 8;
138 var->green.length = 8;
139 var->blue.length = 8;
140 var->transp.length = 8;
141 var->transp.offset = 24;
142 break;
143 default:
144 DRM_ERROR("Bad depth %u.\n", depth);
145 return -EINVAL;
146 }
147
148 if ((var->xoffset + var->xres) > par->max_width ||
149 (var->yoffset + var->yres) > par->max_height) {
150 DRM_ERROR("Requested geom can not fit in framebuffer\n");
151 return -EINVAL;
152 }
153
154 if (!vmw_kms_validate_mode_vram(vmw_priv,
155 var->xres * var->bits_per_pixel/8,
156 var->yoffset + var->yres)) {
157 DRM_ERROR("Requested geom can not fit in framebuffer\n");
158 return -EINVAL;
159 }
160
161 return 0;
162 }
163
vmw_fb_blank(int blank,struct fb_info * info)164 static int vmw_fb_blank(int blank, struct fb_info *info)
165 {
166 return 0;
167 }
168
169 /**
170 * vmw_fb_dirty_flush - flush dirty regions to the kms framebuffer
171 *
172 * @work: The struct work_struct associated with this task.
173 *
174 * This function flushes the dirty regions of the vmalloc framebuffer to the
175 * kms framebuffer, and if the kms framebuffer is visible, also updated the
176 * corresponding displays. Note that this function runs even if the kms
177 * framebuffer is not bound to a crtc and thus not visible, but it's turned
178 * off during hibernation using the par->dirty.active bool.
179 */
vmw_fb_dirty_flush(struct work_struct * work)180 static void vmw_fb_dirty_flush(struct work_struct *work)
181 {
182 struct vmw_fb_par *par = container_of(work, struct vmw_fb_par,
183 local_work.work);
184 struct vmw_private *vmw_priv = par->vmw_priv;
185 struct fb_info *info = vmw_priv->fb_info;
186 unsigned long irq_flags;
187 s32 dst_x1, dst_x2, dst_y1, dst_y2, w = 0, h = 0;
188 u32 cpp, max_x, max_y;
189 struct drm_clip_rect clip;
190 struct drm_framebuffer *cur_fb;
191 u8 *src_ptr, *dst_ptr;
192 struct vmw_buffer_object *vbo = par->vmw_bo;
193 void *virtual;
194
195 if (!READ_ONCE(par->dirty.active))
196 return;
197
198 mutex_lock(&par->bo_mutex);
199 cur_fb = par->set_fb;
200 if (!cur_fb)
201 goto out_unlock;
202
203 (void) ttm_read_lock(&vmw_priv->reservation_sem, false);
204 (void) ttm_bo_reserve(&vbo->base, false, false, NULL);
205 virtual = vmw_bo_map_and_cache(vbo);
206 if (!virtual)
207 goto out_unreserve;
208
209 spin_lock_irqsave(&par->dirty.lock, irq_flags);
210 if (!par->dirty.active) {
211 spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
212 goto out_unreserve;
213 }
214
215 /*
216 * Handle panning when copying from vmalloc to framebuffer.
217 * Clip dirty area to framebuffer.
218 */
219 cpp = cur_fb->format->cpp[0];
220 max_x = par->fb_x + cur_fb->width;
221 max_y = par->fb_y + cur_fb->height;
222
223 dst_x1 = par->dirty.x1 - par->fb_x;
224 dst_y1 = par->dirty.y1 - par->fb_y;
225 dst_x1 = max_t(s32, dst_x1, 0);
226 dst_y1 = max_t(s32, dst_y1, 0);
227
228 dst_x2 = par->dirty.x2 - par->fb_x;
229 dst_y2 = par->dirty.y2 - par->fb_y;
230 dst_x2 = min_t(s32, dst_x2, max_x);
231 dst_y2 = min_t(s32, dst_y2, max_y);
232 w = dst_x2 - dst_x1;
233 h = dst_y2 - dst_y1;
234 w = max_t(s32, 0, w);
235 h = max_t(s32, 0, h);
236
237 par->dirty.x1 = par->dirty.x2 = 0;
238 par->dirty.y1 = par->dirty.y2 = 0;
239 spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
240
241 if (w && h) {
242 dst_ptr = (u8 *)virtual +
243 (dst_y1 * par->set_fb->pitches[0] + dst_x1 * cpp);
244 src_ptr = (u8 *)par->vmalloc +
245 ((dst_y1 + par->fb_y) * info->fix.line_length +
246 (dst_x1 + par->fb_x) * cpp);
247
248 while (h-- > 0) {
249 memcpy(dst_ptr, src_ptr, w*cpp);
250 dst_ptr += par->set_fb->pitches[0];
251 src_ptr += info->fix.line_length;
252 }
253
254 clip.x1 = dst_x1;
255 clip.x2 = dst_x2;
256 clip.y1 = dst_y1;
257 clip.y2 = dst_y2;
258 }
259
260 out_unreserve:
261 ttm_bo_unreserve(&vbo->base);
262 ttm_read_unlock(&vmw_priv->reservation_sem);
263 if (w && h) {
264 WARN_ON_ONCE(par->set_fb->funcs->dirty(cur_fb, NULL, 0, 0,
265 &clip, 1));
266 vmw_fifo_flush(vmw_priv, false);
267 }
268 out_unlock:
269 mutex_unlock(&par->bo_mutex);
270 }
271
vmw_fb_dirty_mark(struct vmw_fb_par * par,unsigned x1,unsigned y1,unsigned width,unsigned height)272 static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
273 unsigned x1, unsigned y1,
274 unsigned width, unsigned height)
275 {
276 unsigned long flags;
277 unsigned x2 = x1 + width;
278 unsigned y2 = y1 + height;
279
280 spin_lock_irqsave(&par->dirty.lock, flags);
281 if (par->dirty.x1 == par->dirty.x2) {
282 par->dirty.x1 = x1;
283 par->dirty.y1 = y1;
284 par->dirty.x2 = x2;
285 par->dirty.y2 = y2;
286 /* if we are active start the dirty work
287 * we share the work with the defio system */
288 if (par->dirty.active)
289 schedule_delayed_work(&par->local_work,
290 VMW_DIRTY_DELAY);
291 } else {
292 if (x1 < par->dirty.x1)
293 par->dirty.x1 = x1;
294 if (y1 < par->dirty.y1)
295 par->dirty.y1 = y1;
296 if (x2 > par->dirty.x2)
297 par->dirty.x2 = x2;
298 if (y2 > par->dirty.y2)
299 par->dirty.y2 = y2;
300 }
301 spin_unlock_irqrestore(&par->dirty.lock, flags);
302 }
303
vmw_fb_pan_display(struct fb_var_screeninfo * var,struct fb_info * info)304 static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
305 struct fb_info *info)
306 {
307 struct vmw_fb_par *par = info->par;
308
309 if ((var->xoffset + var->xres) > var->xres_virtual ||
310 (var->yoffset + var->yres) > var->yres_virtual) {
311 DRM_ERROR("Requested panning can not fit in framebuffer\n");
312 return -EINVAL;
313 }
314
315 mutex_lock(&par->bo_mutex);
316 par->fb_x = var->xoffset;
317 par->fb_y = var->yoffset;
318 if (par->set_fb)
319 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y, par->set_fb->width,
320 par->set_fb->height);
321 mutex_unlock(&par->bo_mutex);
322
323 return 0;
324 }
325
vmw_deferred_io(struct fb_info * info,struct list_head * pagelist)326 static void vmw_deferred_io(struct fb_info *info,
327 struct list_head *pagelist)
328 {
329 struct vmw_fb_par *par = info->par;
330 unsigned long start, end, min, max;
331 unsigned long flags;
332 struct page *page;
333 int y1, y2;
334
335 min = ULONG_MAX;
336 max = 0;
337 list_for_each_entry(page, pagelist, lru) {
338 start = page->index << PAGE_SHIFT;
339 end = start + PAGE_SIZE - 1;
340 min = min(min, start);
341 max = max(max, end);
342 }
343
344 if (min < max) {
345 y1 = min / info->fix.line_length;
346 y2 = (max / info->fix.line_length) + 1;
347
348 spin_lock_irqsave(&par->dirty.lock, flags);
349 par->dirty.x1 = 0;
350 par->dirty.y1 = y1;
351 par->dirty.x2 = info->var.xres;
352 par->dirty.y2 = y2;
353 spin_unlock_irqrestore(&par->dirty.lock, flags);
354
355 /*
356 * Since we've already waited on this work once, try to
357 * execute asap.
358 */
359 cancel_delayed_work(&par->local_work);
360 schedule_delayed_work(&par->local_work, 0);
361 }
362 };
363
364 static struct fb_deferred_io vmw_defio = {
365 .delay = VMW_DIRTY_DELAY,
366 .deferred_io = vmw_deferred_io,
367 };
368
369 /*
370 * Draw code
371 */
372
vmw_fb_fillrect(struct fb_info * info,const struct fb_fillrect * rect)373 static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
374 {
375 cfb_fillrect(info, rect);
376 vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
377 rect->width, rect->height);
378 }
379
vmw_fb_copyarea(struct fb_info * info,const struct fb_copyarea * region)380 static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
381 {
382 cfb_copyarea(info, region);
383 vmw_fb_dirty_mark(info->par, region->dx, region->dy,
384 region->width, region->height);
385 }
386
vmw_fb_imageblit(struct fb_info * info,const struct fb_image * image)387 static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image)
388 {
389 cfb_imageblit(info, image);
390 vmw_fb_dirty_mark(info->par, image->dx, image->dy,
391 image->width, image->height);
392 }
393
394 /*
395 * Bring up code
396 */
397
vmw_fb_create_bo(struct vmw_private * vmw_priv,size_t size,struct vmw_buffer_object ** out)398 static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
399 size_t size, struct vmw_buffer_object **out)
400 {
401 struct vmw_buffer_object *vmw_bo;
402 int ret;
403
404 (void) ttm_write_lock(&vmw_priv->reservation_sem, false);
405
406 vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
407 if (!vmw_bo) {
408 ret = -ENOMEM;
409 goto err_unlock;
410 }
411
412 ret = vmw_bo_init(vmw_priv, vmw_bo, size,
413 &vmw_sys_placement,
414 false,
415 &vmw_bo_bo_free);
416 if (unlikely(ret != 0))
417 goto err_unlock; /* init frees the buffer on failure */
418
419 *out = vmw_bo;
420 ttm_write_unlock(&vmw_priv->reservation_sem);
421
422 return 0;
423
424 err_unlock:
425 ttm_write_unlock(&vmw_priv->reservation_sem);
426 return ret;
427 }
428
vmw_fb_compute_depth(struct fb_var_screeninfo * var,int * depth)429 static int vmw_fb_compute_depth(struct fb_var_screeninfo *var,
430 int *depth)
431 {
432 switch (var->bits_per_pixel) {
433 case 32:
434 *depth = (var->transp.length > 0) ? 32 : 24;
435 break;
436 default:
437 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
438 return -EINVAL;
439 }
440
441 return 0;
442 }
443
vmwgfx_set_config_internal(struct drm_mode_set * set)444 static int vmwgfx_set_config_internal(struct drm_mode_set *set)
445 {
446 struct drm_crtc *crtc = set->crtc;
447 struct drm_modeset_acquire_ctx ctx;
448 int ret;
449
450 drm_modeset_acquire_init(&ctx, 0);
451
452 restart:
453 ret = crtc->funcs->set_config(set, &ctx);
454
455 if (ret == -EDEADLK) {
456 drm_modeset_backoff(&ctx);
457 goto restart;
458 }
459
460 drm_modeset_drop_locks(&ctx);
461 drm_modeset_acquire_fini(&ctx);
462
463 return ret;
464 }
465
vmw_fb_kms_detach(struct vmw_fb_par * par,bool detach_bo,bool unref_bo)466 static int vmw_fb_kms_detach(struct vmw_fb_par *par,
467 bool detach_bo,
468 bool unref_bo)
469 {
470 struct drm_framebuffer *cur_fb = par->set_fb;
471 int ret;
472
473 /* Detach the KMS framebuffer from crtcs */
474 if (par->set_mode) {
475 struct drm_mode_set set;
476
477 set.crtc = par->crtc;
478 set.x = 0;
479 set.y = 0;
480 set.mode = NULL;
481 set.fb = NULL;
482 set.num_connectors = 0;
483 set.connectors = &par->con;
484 ret = vmwgfx_set_config_internal(&set);
485 if (ret) {
486 DRM_ERROR("Could not unset a mode.\n");
487 return ret;
488 }
489 drm_mode_destroy(par->vmw_priv->dev, par->set_mode);
490 par->set_mode = NULL;
491 }
492
493 if (cur_fb) {
494 drm_framebuffer_put(cur_fb);
495 par->set_fb = NULL;
496 }
497
498 if (par->vmw_bo && detach_bo && unref_bo)
499 vmw_bo_unreference(&par->vmw_bo);
500
501 return 0;
502 }
503
vmw_fb_kms_framebuffer(struct fb_info * info)504 static int vmw_fb_kms_framebuffer(struct fb_info *info)
505 {
506 struct drm_mode_fb_cmd2 mode_cmd;
507 struct vmw_fb_par *par = info->par;
508 struct fb_var_screeninfo *var = &info->var;
509 struct drm_framebuffer *cur_fb;
510 struct vmw_framebuffer *vfb;
511 int ret = 0, depth;
512 size_t new_bo_size;
513
514 ret = vmw_fb_compute_depth(var, &depth);
515 if (ret)
516 return ret;
517
518 mode_cmd.width = var->xres;
519 mode_cmd.height = var->yres;
520 mode_cmd.pitches[0] = ((var->bits_per_pixel + 7) / 8) * mode_cmd.width;
521 mode_cmd.pixel_format =
522 drm_mode_legacy_fb_format(var->bits_per_pixel, depth);
523
524 cur_fb = par->set_fb;
525 if (cur_fb && cur_fb->width == mode_cmd.width &&
526 cur_fb->height == mode_cmd.height &&
527 cur_fb->format->format == mode_cmd.pixel_format &&
528 cur_fb->pitches[0] == mode_cmd.pitches[0])
529 return 0;
530
531 /* Need new buffer object ? */
532 new_bo_size = (size_t) mode_cmd.pitches[0] * (size_t) mode_cmd.height;
533 ret = vmw_fb_kms_detach(par,
534 par->bo_size < new_bo_size ||
535 par->bo_size > 2*new_bo_size,
536 true);
537 if (ret)
538 return ret;
539
540 if (!par->vmw_bo) {
541 ret = vmw_fb_create_bo(par->vmw_priv, new_bo_size,
542 &par->vmw_bo);
543 if (ret) {
544 DRM_ERROR("Failed creating a buffer object for "
545 "fbdev.\n");
546 return ret;
547 }
548 par->bo_size = new_bo_size;
549 }
550
551 vfb = vmw_kms_new_framebuffer(par->vmw_priv, par->vmw_bo, NULL,
552 true, &mode_cmd);
553 if (IS_ERR(vfb))
554 return PTR_ERR(vfb);
555
556 par->set_fb = &vfb->base;
557
558 return 0;
559 }
560
vmw_fb_set_par(struct fb_info * info)561 static int vmw_fb_set_par(struct fb_info *info)
562 {
563 struct vmw_fb_par *par = info->par;
564 struct vmw_private *vmw_priv = par->vmw_priv;
565 struct drm_mode_set set;
566 struct fb_var_screeninfo *var = &info->var;
567 struct drm_display_mode new_mode = { DRM_MODE("fb_mode",
568 DRM_MODE_TYPE_DRIVER,
569 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
570 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
571 };
572 struct drm_display_mode *mode;
573 int ret;
574
575 mode = drm_mode_duplicate(vmw_priv->dev, &new_mode);
576 if (!mode) {
577 DRM_ERROR("Could not create new fb mode.\n");
578 return -ENOMEM;
579 }
580
581 mode->hdisplay = var->xres;
582 mode->vdisplay = var->yres;
583 vmw_guess_mode_timing(mode);
584
585 if (!vmw_kms_validate_mode_vram(vmw_priv,
586 mode->hdisplay *
587 DIV_ROUND_UP(var->bits_per_pixel, 8),
588 mode->vdisplay)) {
589 drm_mode_destroy(vmw_priv->dev, mode);
590 return -EINVAL;
591 }
592
593 mutex_lock(&par->bo_mutex);
594 ret = vmw_fb_kms_framebuffer(info);
595 if (ret)
596 goto out_unlock;
597
598 par->fb_x = var->xoffset;
599 par->fb_y = var->yoffset;
600
601 set.crtc = par->crtc;
602 set.x = 0;
603 set.y = 0;
604 set.mode = mode;
605 set.fb = par->set_fb;
606 set.num_connectors = 1;
607 set.connectors = &par->con;
608
609 ret = vmwgfx_set_config_internal(&set);
610 if (ret)
611 goto out_unlock;
612
613 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y,
614 par->set_fb->width, par->set_fb->height);
615
616 /* If there already was stuff dirty we wont
617 * schedule a new work, so lets do it now */
618
619 schedule_delayed_work(&par->local_work, 0);
620
621 out_unlock:
622 if (par->set_mode)
623 drm_mode_destroy(vmw_priv->dev, par->set_mode);
624 par->set_mode = mode;
625
626 mutex_unlock(&par->bo_mutex);
627
628 return ret;
629 }
630
631
632 static const struct fb_ops vmw_fb_ops = {
633 .owner = THIS_MODULE,
634 .fb_check_var = vmw_fb_check_var,
635 .fb_set_par = vmw_fb_set_par,
636 .fb_setcolreg = vmw_fb_setcolreg,
637 .fb_fillrect = vmw_fb_fillrect,
638 .fb_copyarea = vmw_fb_copyarea,
639 .fb_imageblit = vmw_fb_imageblit,
640 .fb_pan_display = vmw_fb_pan_display,
641 .fb_blank = vmw_fb_blank,
642 };
643
vmw_fb_init(struct vmw_private * vmw_priv)644 int vmw_fb_init(struct vmw_private *vmw_priv)
645 {
646 struct device *device = &vmw_priv->dev->pdev->dev;
647 struct vmw_fb_par *par;
648 struct fb_info *info;
649 unsigned fb_width, fb_height;
650 unsigned int fb_bpp, fb_pitch, fb_size;
651 struct drm_display_mode *init_mode;
652 int ret;
653
654 fb_bpp = 32;
655
656 /* XXX As shouldn't these be as well. */
657 fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
658 fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
659
660 fb_pitch = fb_width * fb_bpp / 8;
661 fb_size = fb_pitch * fb_height;
662
663 info = framebuffer_alloc(sizeof(*par), device);
664 if (!info)
665 return -ENOMEM;
666
667 /*
668 * Par
669 */
670 vmw_priv->fb_info = info;
671 par = info->par;
672 memset(par, 0, sizeof(*par));
673 INIT_DELAYED_WORK(&par->local_work, &vmw_fb_dirty_flush);
674 par->vmw_priv = vmw_priv;
675 par->vmalloc = NULL;
676 par->max_width = fb_width;
677 par->max_height = fb_height;
678
679 ret = vmw_kms_fbdev_init_data(vmw_priv, 0, par->max_width,
680 par->max_height, &par->con,
681 &par->crtc, &init_mode);
682 if (ret)
683 goto err_kms;
684
685 info->var.xres = init_mode->hdisplay;
686 info->var.yres = init_mode->vdisplay;
687
688 /*
689 * Create buffers and alloc memory
690 */
691 par->vmalloc = vzalloc(fb_size);
692 if (unlikely(par->vmalloc == NULL)) {
693 ret = -ENOMEM;
694 goto err_free;
695 }
696
697 /*
698 * Fixed and var
699 */
700 strcpy(info->fix.id, "svgadrmfb");
701 info->fix.type = FB_TYPE_PACKED_PIXELS;
702 info->fix.visual = FB_VISUAL_TRUECOLOR;
703 info->fix.type_aux = 0;
704 info->fix.xpanstep = 1; /* doing it in hw */
705 info->fix.ypanstep = 1; /* doing it in hw */
706 info->fix.ywrapstep = 0;
707 info->fix.accel = FB_ACCEL_NONE;
708 info->fix.line_length = fb_pitch;
709
710 info->fix.smem_start = 0;
711 info->fix.smem_len = fb_size;
712
713 info->pseudo_palette = par->pseudo_palette;
714 info->screen_base = (char __iomem *)par->vmalloc;
715 info->screen_size = fb_size;
716
717 info->fbops = &vmw_fb_ops;
718
719 /* 24 depth per default */
720 info->var.red.offset = 16;
721 info->var.green.offset = 8;
722 info->var.blue.offset = 0;
723 info->var.red.length = 8;
724 info->var.green.length = 8;
725 info->var.blue.length = 8;
726 info->var.transp.offset = 0;
727 info->var.transp.length = 0;
728
729 info->var.xres_virtual = fb_width;
730 info->var.yres_virtual = fb_height;
731 info->var.bits_per_pixel = fb_bpp;
732 info->var.xoffset = 0;
733 info->var.yoffset = 0;
734 info->var.activate = FB_ACTIVATE_NOW;
735 info->var.height = -1;
736 info->var.width = -1;
737
738 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
739 info->apertures = alloc_apertures(1);
740 if (!info->apertures) {
741 ret = -ENOMEM;
742 goto err_aper;
743 }
744 info->apertures->ranges[0].base = vmw_priv->vram_start;
745 info->apertures->ranges[0].size = vmw_priv->vram_size;
746
747 /*
748 * Dirty & Deferred IO
749 */
750 par->dirty.x1 = par->dirty.x2 = 0;
751 par->dirty.y1 = par->dirty.y2 = 0;
752 par->dirty.active = true;
753 spin_lock_init(&par->dirty.lock);
754 mutex_init(&par->bo_mutex);
755 info->fbdefio = &vmw_defio;
756 fb_deferred_io_init(info);
757
758 ret = register_framebuffer(info);
759 if (unlikely(ret != 0))
760 goto err_defio;
761
762 vmw_fb_set_par(info);
763
764 return 0;
765
766 err_defio:
767 fb_deferred_io_cleanup(info);
768 err_aper:
769 err_free:
770 vfree(par->vmalloc);
771 err_kms:
772 framebuffer_release(info);
773 vmw_priv->fb_info = NULL;
774
775 return ret;
776 }
777
vmw_fb_close(struct vmw_private * vmw_priv)778 int vmw_fb_close(struct vmw_private *vmw_priv)
779 {
780 struct fb_info *info;
781 struct vmw_fb_par *par;
782
783 if (!vmw_priv->fb_info)
784 return 0;
785
786 info = vmw_priv->fb_info;
787 par = info->par;
788
789 /* ??? order */
790 fb_deferred_io_cleanup(info);
791 cancel_delayed_work_sync(&par->local_work);
792 unregister_framebuffer(info);
793
794 mutex_lock(&par->bo_mutex);
795 (void) vmw_fb_kms_detach(par, true, true);
796 mutex_unlock(&par->bo_mutex);
797
798 vfree(par->vmalloc);
799 framebuffer_release(info);
800
801 return 0;
802 }
803
vmw_fb_off(struct vmw_private * vmw_priv)804 int vmw_fb_off(struct vmw_private *vmw_priv)
805 {
806 struct fb_info *info;
807 struct vmw_fb_par *par;
808 unsigned long flags;
809
810 if (!vmw_priv->fb_info)
811 return -EINVAL;
812
813 info = vmw_priv->fb_info;
814 par = info->par;
815
816 spin_lock_irqsave(&par->dirty.lock, flags);
817 par->dirty.active = false;
818 spin_unlock_irqrestore(&par->dirty.lock, flags);
819
820 flush_delayed_work(&info->deferred_work);
821 flush_delayed_work(&par->local_work);
822
823 return 0;
824 }
825
vmw_fb_on(struct vmw_private * vmw_priv)826 int vmw_fb_on(struct vmw_private *vmw_priv)
827 {
828 struct fb_info *info;
829 struct vmw_fb_par *par;
830 unsigned long flags;
831
832 if (!vmw_priv->fb_info)
833 return -EINVAL;
834
835 info = vmw_priv->fb_info;
836 par = info->par;
837
838 spin_lock_irqsave(&par->dirty.lock, flags);
839 par->dirty.active = true;
840 spin_unlock_irqrestore(&par->dirty.lock, flags);
841
842 /*
843 * Need to reschedule a dirty update, because otherwise that's
844 * only done in dirty_mark() if the previous coalesced
845 * dirty region was empty.
846 */
847 schedule_delayed_work(&par->local_work, 0);
848
849 return 0;
850 }
851