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1/**************************************************************************
2 *
3 * Copyright © 2007 David Airlie
4 * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
22 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
23 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
24 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
25 * USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 **************************************************************************/
28
29#include <linux/pci.h>
30
31#include <drm/drm_fourcc.h>
32#include <drm/ttm/ttm_placement.h>
33
34#include "vmwgfx_drv.h"
35#include "vmwgfx_kms.h"
36
37#define VMW_DIRTY_DELAY (HZ / 30)
38
39struct vmw_fb_par {
40 struct vmw_private *vmw_priv;
41
42 void *vmalloc;
43
44 struct mutex bo_mutex;
45 struct vmw_buffer_object *vmw_bo;
46 unsigned bo_size;
47 struct drm_framebuffer *set_fb;
48 struct drm_display_mode *set_mode;
49 u32 fb_x;
50 u32 fb_y;
51 bool bo_iowrite;
52
53 u32 pseudo_palette[17];
54
55 unsigned max_width;
56 unsigned max_height;
57
58 struct {
59 spinlock_t lock;
60 bool active;
61 unsigned x1;
62 unsigned y1;
63 unsigned x2;
64 unsigned y2;
65 } dirty;
66
67 struct drm_crtc *crtc;
68 struct drm_connector *con;
69 struct delayed_work local_work;
70};
71
72static int vmw_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
73 unsigned blue, unsigned transp,
74 struct fb_info *info)
75{
76 struct vmw_fb_par *par = info->par;
77 u32 *pal = par->pseudo_palette;
78
79 if (regno > 15) {
80 DRM_ERROR("Bad regno %u.\n", regno);
81 return 1;
82 }
83
84 switch (par->set_fb->format->depth) {
85 case 24:
86 case 32:
87 pal[regno] = ((red & 0xff00) << 8) |
88 (green & 0xff00) |
89 ((blue & 0xff00) >> 8);
90 break;
91 default:
92 DRM_ERROR("Bad depth %u, bpp %u.\n",
93 par->set_fb->format->depth,
94 par->set_fb->format->cpp[0] * 8);
95 return 1;
96 }
97
98 return 0;
99}
100
101static int vmw_fb_check_var(struct fb_var_screeninfo *var,
102 struct fb_info *info)
103{
104 int depth = var->bits_per_pixel;
105 struct vmw_fb_par *par = info->par;
106 struct vmw_private *vmw_priv = par->vmw_priv;
107
108 switch (var->bits_per_pixel) {
109 case 32:
110 depth = (var->transp.length > 0) ? 32 : 24;
111 break;
112 default:
113 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
114 return -EINVAL;
115 }
116
117 switch (depth) {
118 case 24:
119 var->red.offset = 16;
120 var->green.offset = 8;
121 var->blue.offset = 0;
122 var->red.length = 8;
123 var->green.length = 8;
124 var->blue.length = 8;
125 var->transp.length = 0;
126 var->transp.offset = 0;
127 break;
128 case 32:
129 var->red.offset = 16;
130 var->green.offset = 8;
131 var->blue.offset = 0;
132 var->red.length = 8;
133 var->green.length = 8;
134 var->blue.length = 8;
135 var->transp.length = 8;
136 var->transp.offset = 24;
137 break;
138 default:
139 DRM_ERROR("Bad depth %u.\n", depth);
140 return -EINVAL;
141 }
142
143 if ((var->xoffset + var->xres) > par->max_width ||
144 (var->yoffset + var->yres) > par->max_height) {
145 DRM_ERROR("Requested geom can not fit in framebuffer\n");
146 return -EINVAL;
147 }
148
149 if (!vmw_kms_validate_mode_vram(vmw_priv,
150 var->xres * var->bits_per_pixel/8,
151 var->yoffset + var->yres)) {
152 DRM_ERROR("Requested geom can not fit in framebuffer\n");
153 return -EINVAL;
154 }
155
156 return 0;
157}
158
159static int vmw_fb_blank(int blank, struct fb_info *info)
160{
161 return 0;
162}
163
164/**
165 * vmw_fb_dirty_flush - flush dirty regions to the kms framebuffer
166 *
167 * @work: The struct work_struct associated with this task.
168 *
169 * This function flushes the dirty regions of the vmalloc framebuffer to the
170 * kms framebuffer, and if the kms framebuffer is visible, also updated the
171 * corresponding displays. Note that this function runs even if the kms
172 * framebuffer is not bound to a crtc and thus not visible, but it's turned
173 * off during hibernation using the par->dirty.active bool.
174 */
175static void vmw_fb_dirty_flush(struct work_struct *work)
176{
177 struct vmw_fb_par *par = container_of(work, struct vmw_fb_par,
178 local_work.work);
179 struct vmw_private *vmw_priv = par->vmw_priv;
180 struct fb_info *info = vmw_priv->fb_info;
181 unsigned long irq_flags;
182 s32 dst_x1, dst_x2, dst_y1, dst_y2, w = 0, h = 0;
183 u32 cpp, max_x, max_y;
184 struct drm_clip_rect clip;
185 struct drm_framebuffer *cur_fb;
186 u8 *src_ptr, *dst_ptr;
187 struct vmw_buffer_object *vbo = par->vmw_bo;
188 void *virtual;
189
190 if (!READ_ONCE(par->dirty.active))
191 return;
192
193 mutex_lock(&par->bo_mutex);
194 cur_fb = par->set_fb;
195 if (!cur_fb)
196 goto out_unlock;
197
198 (void) ttm_read_lock(&vmw_priv->reservation_sem, false);
199 (void) ttm_bo_reserve(&vbo->base, false, false, NULL);
200 virtual = vmw_bo_map_and_cache(vbo);
201 if (!virtual)
202 goto out_unreserve;
203
204 spin_lock_irqsave(&par->dirty.lock, irq_flags);
205 if (!par->dirty.active) {
206 spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
207 goto out_unreserve;
208 }
209
210 /*
211 * Handle panning when copying from vmalloc to framebuffer.
212 * Clip dirty area to framebuffer.
213 */
214 cpp = cur_fb->format->cpp[0];
215 max_x = par->fb_x + cur_fb->width;
216 max_y = par->fb_y + cur_fb->height;
217
218 dst_x1 = par->dirty.x1 - par->fb_x;
219 dst_y1 = par->dirty.y1 - par->fb_y;
220 dst_x1 = max_t(s32, dst_x1, 0);
221 dst_y1 = max_t(s32, dst_y1, 0);
222
223 dst_x2 = par->dirty.x2 - par->fb_x;
224 dst_y2 = par->dirty.y2 - par->fb_y;
225 dst_x2 = min_t(s32, dst_x2, max_x);
226 dst_y2 = min_t(s32, dst_y2, max_y);
227 w = dst_x2 - dst_x1;
228 h = dst_y2 - dst_y1;
229 w = max_t(s32, 0, w);
230 h = max_t(s32, 0, h);
231
232 par->dirty.x1 = par->dirty.x2 = 0;
233 par->dirty.y1 = par->dirty.y2 = 0;
234 spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
235
236 if (w && h) {
237 dst_ptr = (u8 *)virtual +
238 (dst_y1 * par->set_fb->pitches[0] + dst_x1 * cpp);
239 src_ptr = (u8 *)par->vmalloc +
240 ((dst_y1 + par->fb_y) * info->fix.line_length +
241 (dst_x1 + par->fb_x) * cpp);
242
243 while (h-- > 0) {
244 memcpy(dst_ptr, src_ptr, w*cpp);
245 dst_ptr += par->set_fb->pitches[0];
246 src_ptr += info->fix.line_length;
247 }
248
249 clip.x1 = dst_x1;
250 clip.x2 = dst_x2;
251 clip.y1 = dst_y1;
252 clip.y2 = dst_y2;
253 }
254
255out_unreserve:
256 ttm_bo_unreserve(&vbo->base);
257 ttm_read_unlock(&vmw_priv->reservation_sem);
258 if (w && h) {
259 WARN_ON_ONCE(par->set_fb->funcs->dirty(cur_fb, NULL, 0, 0,
260 &clip, 1));
261 vmw_fifo_flush(vmw_priv, false);
262 }
263out_unlock:
264 mutex_unlock(&par->bo_mutex);
265}
266
267static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
268 unsigned x1, unsigned y1,
269 unsigned width, unsigned height)
270{
271 unsigned long flags;
272 unsigned x2 = x1 + width;
273 unsigned y2 = y1 + height;
274
275 spin_lock_irqsave(&par->dirty.lock, flags);
276 if (par->dirty.x1 == par->dirty.x2) {
277 par->dirty.x1 = x1;
278 par->dirty.y1 = y1;
279 par->dirty.x2 = x2;
280 par->dirty.y2 = y2;
281 /* if we are active start the dirty work
282 * we share the work with the defio system */
283 if (par->dirty.active)
284 schedule_delayed_work(&par->local_work,
285 VMW_DIRTY_DELAY);
286 } else {
287 if (x1 < par->dirty.x1)
288 par->dirty.x1 = x1;
289 if (y1 < par->dirty.y1)
290 par->dirty.y1 = y1;
291 if (x2 > par->dirty.x2)
292 par->dirty.x2 = x2;
293 if (y2 > par->dirty.y2)
294 par->dirty.y2 = y2;
295 }
296 spin_unlock_irqrestore(&par->dirty.lock, flags);
297}
298
299static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
300 struct fb_info *info)
301{
302 struct vmw_fb_par *par = info->par;
303
304 if ((var->xoffset + var->xres) > var->xres_virtual ||
305 (var->yoffset + var->yres) > var->yres_virtual) {
306 DRM_ERROR("Requested panning can not fit in framebuffer\n");
307 return -EINVAL;
308 }
309
310 mutex_lock(&par->bo_mutex);
311 par->fb_x = var->xoffset;
312 par->fb_y = var->yoffset;
313 if (par->set_fb)
314 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y, par->set_fb->width,
315 par->set_fb->height);
316 mutex_unlock(&par->bo_mutex);
317
318 return 0;
319}
320
321static void vmw_deferred_io(struct fb_info *info,
322 struct list_head *pagelist)
323{
324 struct vmw_fb_par *par = info->par;
325 unsigned long start, end, min, max;
326 unsigned long flags;
327 struct page *page;
328 int y1, y2;
329
330 min = ULONG_MAX;
331 max = 0;
332 list_for_each_entry(page, pagelist, lru) {
333 start = page->index << PAGE_SHIFT;
334 end = start + PAGE_SIZE - 1;
335 min = min(min, start);
336 max = max(max, end);
337 }
338
339 if (min < max) {
340 y1 = min / info->fix.line_length;
341 y2 = (max / info->fix.line_length) + 1;
342
343 spin_lock_irqsave(&par->dirty.lock, flags);
344 par->dirty.x1 = 0;
345 par->dirty.y1 = y1;
346 par->dirty.x2 = info->var.xres;
347 par->dirty.y2 = y2;
348 spin_unlock_irqrestore(&par->dirty.lock, flags);
349
350 /*
351 * Since we've already waited on this work once, try to
352 * execute asap.
353 */
354 cancel_delayed_work(&par->local_work);
355 schedule_delayed_work(&par->local_work, 0);
356 }
357};
358
359static struct fb_deferred_io vmw_defio = {
360 .delay = VMW_DIRTY_DELAY,
361 .deferred_io = vmw_deferred_io,
362};
363
364/*
365 * Draw code
366 */
367
368static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
369{
370 cfb_fillrect(info, rect);
371 vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
372 rect->width, rect->height);
373}
374
375static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
376{
377 cfb_copyarea(info, region);
378 vmw_fb_dirty_mark(info->par, region->dx, region->dy,
379 region->width, region->height);
380}
381
382static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image)
383{
384 cfb_imageblit(info, image);
385 vmw_fb_dirty_mark(info->par, image->dx, image->dy,
386 image->width, image->height);
387}
388
389/*
390 * Bring up code
391 */
392
393static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
394 size_t size, struct vmw_buffer_object **out)
395{
396 struct vmw_buffer_object *vmw_bo;
397 int ret;
398
399 (void) ttm_write_lock(&vmw_priv->reservation_sem, false);
400
401 vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
402 if (!vmw_bo) {
403 ret = -ENOMEM;
404 goto err_unlock;
405 }
406
407 ret = vmw_bo_init(vmw_priv, vmw_bo, size,
408 &vmw_sys_placement,
409 false,
410 &vmw_bo_bo_free);
411 if (unlikely(ret != 0))
412 goto err_unlock; /* init frees the buffer on failure */
413
414 *out = vmw_bo;
415 ttm_write_unlock(&vmw_priv->reservation_sem);
416
417 return 0;
418
419err_unlock:
420 ttm_write_unlock(&vmw_priv->reservation_sem);
421 return ret;
422}
423
424static int vmw_fb_compute_depth(struct fb_var_screeninfo *var,
425 int *depth)
426{
427 switch (var->bits_per_pixel) {
428 case 32:
429 *depth = (var->transp.length > 0) ? 32 : 24;
430 break;
431 default:
432 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
433 return -EINVAL;
434 }
435
436 return 0;
437}
438
439static int vmwgfx_set_config_internal(struct drm_mode_set *set)
440{
441 struct drm_crtc *crtc = set->crtc;
442 struct drm_modeset_acquire_ctx ctx;
443 int ret;
444
445 drm_modeset_acquire_init(&ctx, 0);
446
447restart:
448 ret = crtc->funcs->set_config(set, &ctx);
449
450 if (ret == -EDEADLK) {
451 drm_modeset_backoff(&ctx);
452 goto restart;
453 }
454
455 drm_modeset_drop_locks(&ctx);
456 drm_modeset_acquire_fini(&ctx);
457
458 return ret;
459}
460
461static int vmw_fb_kms_detach(struct vmw_fb_par *par,
462 bool detach_bo,
463 bool unref_bo)
464{
465 struct drm_framebuffer *cur_fb = par->set_fb;
466 int ret;
467
468 /* Detach the KMS framebuffer from crtcs */
469 if (par->set_mode) {
470 struct drm_mode_set set;
471
472 set.crtc = par->crtc;
473 set.x = 0;
474 set.y = 0;
475 set.mode = NULL;
476 set.fb = NULL;
477 set.num_connectors = 0;
478 set.connectors = &par->con;
479 ret = vmwgfx_set_config_internal(&set);
480 if (ret) {
481 DRM_ERROR("Could not unset a mode.\n");
482 return ret;
483 }
484 drm_mode_destroy(par->vmw_priv->dev, par->set_mode);
485 par->set_mode = NULL;
486 }
487
488 if (cur_fb) {
489 drm_framebuffer_put(cur_fb);
490 par->set_fb = NULL;
491 }
492
493 if (par->vmw_bo && detach_bo && unref_bo)
494 vmw_bo_unreference(&par->vmw_bo);
495
496 return 0;
497}
498
499static int vmw_fb_kms_framebuffer(struct fb_info *info)
500{
501 struct drm_mode_fb_cmd2 mode_cmd;
502 struct vmw_fb_par *par = info->par;
503 struct fb_var_screeninfo *var = &info->var;
504 struct drm_framebuffer *cur_fb;
505 struct vmw_framebuffer *vfb;
506 int ret = 0, depth;
507 size_t new_bo_size;
508
509 ret = vmw_fb_compute_depth(var, &depth);
510 if (ret)
511 return ret;
512
513 mode_cmd.width = var->xres;
514 mode_cmd.height = var->yres;
515 mode_cmd.pitches[0] = ((var->bits_per_pixel + 7) / 8) * mode_cmd.width;
516 mode_cmd.pixel_format =
517 drm_mode_legacy_fb_format(var->bits_per_pixel, depth);
518
519 cur_fb = par->set_fb;
520 if (cur_fb && cur_fb->width == mode_cmd.width &&
521 cur_fb->height == mode_cmd.height &&
522 cur_fb->format->format == mode_cmd.pixel_format &&
523 cur_fb->pitches[0] == mode_cmd.pitches[0])
524 return 0;
525
526 /* Need new buffer object ? */
527 new_bo_size = (size_t) mode_cmd.pitches[0] * (size_t) mode_cmd.height;
528 ret = vmw_fb_kms_detach(par,
529 par->bo_size < new_bo_size ||
530 par->bo_size > 2*new_bo_size,
531 true);
532 if (ret)
533 return ret;
534
535 if (!par->vmw_bo) {
536 ret = vmw_fb_create_bo(par->vmw_priv, new_bo_size,
537 &par->vmw_bo);
538 if (ret) {
539 DRM_ERROR("Failed creating a buffer object for "
540 "fbdev.\n");
541 return ret;
542 }
543 par->bo_size = new_bo_size;
544 }
545
546 vfb = vmw_kms_new_framebuffer(par->vmw_priv, par->vmw_bo, NULL,
547 true, &mode_cmd);
548 if (IS_ERR(vfb))
549 return PTR_ERR(vfb);
550
551 par->set_fb = &vfb->base;
552
553 return 0;
554}
555
556static int vmw_fb_set_par(struct fb_info *info)
557{
558 struct vmw_fb_par *par = info->par;
559 struct vmw_private *vmw_priv = par->vmw_priv;
560 struct drm_mode_set set;
561 struct fb_var_screeninfo *var = &info->var;
562 struct drm_display_mode new_mode = { DRM_MODE("fb_mode",
563 DRM_MODE_TYPE_DRIVER,
564 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
565 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
566 };
567 struct drm_display_mode *mode;
568 int ret;
569
570 mode = drm_mode_duplicate(vmw_priv->dev, &new_mode);
571 if (!mode) {
572 DRM_ERROR("Could not create new fb mode.\n");
573 return -ENOMEM;
574 }
575
576 mode->hdisplay = var->xres;
577 mode->vdisplay = var->yres;
578 vmw_guess_mode_timing(mode);
579
580 if (!vmw_kms_validate_mode_vram(vmw_priv,
581 mode->hdisplay *
582 DIV_ROUND_UP(var->bits_per_pixel, 8),
583 mode->vdisplay)) {
584 drm_mode_destroy(vmw_priv->dev, mode);
585 return -EINVAL;
586 }
587
588 mutex_lock(&par->bo_mutex);
589 ret = vmw_fb_kms_framebuffer(info);
590 if (ret)
591 goto out_unlock;
592
593 par->fb_x = var->xoffset;
594 par->fb_y = var->yoffset;
595
596 set.crtc = par->crtc;
597 set.x = 0;
598 set.y = 0;
599 set.mode = mode;
600 set.fb = par->set_fb;
601 set.num_connectors = 1;
602 set.connectors = &par->con;
603
604 ret = vmwgfx_set_config_internal(&set);
605 if (ret)
606 goto out_unlock;
607
608 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y,
609 par->set_fb->width, par->set_fb->height);
610
611 /* If there already was stuff dirty we wont
612 * schedule a new work, so lets do it now */
613
614 schedule_delayed_work(&par->local_work, 0);
615
616out_unlock:
617 if (par->set_mode)
618 drm_mode_destroy(vmw_priv->dev, par->set_mode);
619 par->set_mode = mode;
620
621 mutex_unlock(&par->bo_mutex);
622
623 return ret;
624}
625
626
627static struct fb_ops vmw_fb_ops = {
628 .owner = THIS_MODULE,
629 .fb_check_var = vmw_fb_check_var,
630 .fb_set_par = vmw_fb_set_par,
631 .fb_setcolreg = vmw_fb_setcolreg,
632 .fb_fillrect = vmw_fb_fillrect,
633 .fb_copyarea = vmw_fb_copyarea,
634 .fb_imageblit = vmw_fb_imageblit,
635 .fb_pan_display = vmw_fb_pan_display,
636 .fb_blank = vmw_fb_blank,
637};
638
639int vmw_fb_init(struct vmw_private *vmw_priv)
640{
641 struct device *device = &vmw_priv->dev->pdev->dev;
642 struct vmw_fb_par *par;
643 struct fb_info *info;
644 unsigned fb_width, fb_height;
645 unsigned int fb_bpp, fb_pitch, fb_size;
646 struct drm_display_mode *init_mode;
647 int ret;
648
649 fb_bpp = 32;
650
651 /* XXX As shouldn't these be as well. */
652 fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
653 fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
654
655 fb_pitch = fb_width * fb_bpp / 8;
656 fb_size = fb_pitch * fb_height;
657
658 info = framebuffer_alloc(sizeof(*par), device);
659 if (!info)
660 return -ENOMEM;
661
662 /*
663 * Par
664 */
665 vmw_priv->fb_info = info;
666 par = info->par;
667 memset(par, 0, sizeof(*par));
668 INIT_DELAYED_WORK(&par->local_work, &vmw_fb_dirty_flush);
669 par->vmw_priv = vmw_priv;
670 par->vmalloc = NULL;
671 par->max_width = fb_width;
672 par->max_height = fb_height;
673
674 ret = vmw_kms_fbdev_init_data(vmw_priv, 0, par->max_width,
675 par->max_height, &par->con,
676 &par->crtc, &init_mode);
677 if (ret)
678 goto err_kms;
679
680 info->var.xres = init_mode->hdisplay;
681 info->var.yres = init_mode->vdisplay;
682
683 /*
684 * Create buffers and alloc memory
685 */
686 par->vmalloc = vzalloc(fb_size);
687 if (unlikely(par->vmalloc == NULL)) {
688 ret = -ENOMEM;
689 goto err_free;
690 }
691
692 /*
693 * Fixed and var
694 */
695 strcpy(info->fix.id, "svgadrmfb");
696 info->fix.type = FB_TYPE_PACKED_PIXELS;
697 info->fix.visual = FB_VISUAL_TRUECOLOR;
698 info->fix.type_aux = 0;
699 info->fix.xpanstep = 1; /* doing it in hw */
700 info->fix.ypanstep = 1; /* doing it in hw */
701 info->fix.ywrapstep = 0;
702 info->fix.accel = FB_ACCEL_NONE;
703 info->fix.line_length = fb_pitch;
704
705 info->fix.smem_start = 0;
706 info->fix.smem_len = fb_size;
707
708 info->pseudo_palette = par->pseudo_palette;
709 info->screen_base = (char __iomem *)par->vmalloc;
710 info->screen_size = fb_size;
711
712 info->fbops = &vmw_fb_ops;
713
714 /* 24 depth per default */
715 info->var.red.offset = 16;
716 info->var.green.offset = 8;
717 info->var.blue.offset = 0;
718 info->var.red.length = 8;
719 info->var.green.length = 8;
720 info->var.blue.length = 8;
721 info->var.transp.offset = 0;
722 info->var.transp.length = 0;
723
724 info->var.xres_virtual = fb_width;
725 info->var.yres_virtual = fb_height;
726 info->var.bits_per_pixel = fb_bpp;
727 info->var.xoffset = 0;
728 info->var.yoffset = 0;
729 info->var.activate = FB_ACTIVATE_NOW;
730 info->var.height = -1;
731 info->var.width = -1;
732
733 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
734 info->apertures = alloc_apertures(1);
735 if (!info->apertures) {
736 ret = -ENOMEM;
737 goto err_aper;
738 }
739 info->apertures->ranges[0].base = vmw_priv->vram_start;
740 info->apertures->ranges[0].size = vmw_priv->vram_size;
741
742 /*
743 * Dirty & Deferred IO
744 */
745 par->dirty.x1 = par->dirty.x2 = 0;
746 par->dirty.y1 = par->dirty.y2 = 0;
747 par->dirty.active = true;
748 spin_lock_init(&par->dirty.lock);
749 mutex_init(&par->bo_mutex);
750 info->fbdefio = &vmw_defio;
751 fb_deferred_io_init(info);
752
753 ret = register_framebuffer(info);
754 if (unlikely(ret != 0))
755 goto err_defio;
756
757 vmw_fb_set_par(info);
758
759 return 0;
760
761err_defio:
762 fb_deferred_io_cleanup(info);
763err_aper:
764err_free:
765 vfree(par->vmalloc);
766err_kms:
767 framebuffer_release(info);
768 vmw_priv->fb_info = NULL;
769
770 return ret;
771}
772
773int vmw_fb_close(struct vmw_private *vmw_priv)
774{
775 struct fb_info *info;
776 struct vmw_fb_par *par;
777
778 if (!vmw_priv->fb_info)
779 return 0;
780
781 info = vmw_priv->fb_info;
782 par = info->par;
783
784 /* ??? order */
785 fb_deferred_io_cleanup(info);
786 cancel_delayed_work_sync(&par->local_work);
787 unregister_framebuffer(info);
788
789 mutex_lock(&par->bo_mutex);
790 (void) vmw_fb_kms_detach(par, true, true);
791 mutex_unlock(&par->bo_mutex);
792
793 vfree(par->vmalloc);
794 framebuffer_release(info);
795
796 return 0;
797}
798
799int vmw_fb_off(struct vmw_private *vmw_priv)
800{
801 struct fb_info *info;
802 struct vmw_fb_par *par;
803 unsigned long flags;
804
805 if (!vmw_priv->fb_info)
806 return -EINVAL;
807
808 info = vmw_priv->fb_info;
809 par = info->par;
810
811 spin_lock_irqsave(&par->dirty.lock, flags);
812 par->dirty.active = false;
813 spin_unlock_irqrestore(&par->dirty.lock, flags);
814
815 flush_delayed_work(&info->deferred_work);
816 flush_delayed_work(&par->local_work);
817
818 return 0;
819}
820
821int vmw_fb_on(struct vmw_private *vmw_priv)
822{
823 struct fb_info *info;
824 struct vmw_fb_par *par;
825 unsigned long flags;
826
827 if (!vmw_priv->fb_info)
828 return -EINVAL;
829
830 info = vmw_priv->fb_info;
831 par = info->par;
832
833 spin_lock_irqsave(&par->dirty.lock, flags);
834 par->dirty.active = true;
835 spin_unlock_irqrestore(&par->dirty.lock, flags);
836
837 /*
838 * Need to reschedule a dirty update, because otherwise that's
839 * only done in dirty_mark() if the previous coalesced
840 * dirty region was empty.
841 */
842 schedule_delayed_work(&par->local_work, 0);
843
844 return 0;
845}
1/**************************************************************************
2 *
3 * Copyright © 2007 David Airlie
4 * Copyright © 2009-2015 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_cmd2 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, depth;
474 size_t new_bo_size;
475
476 ret = vmw_fb_compute_depth(var, &depth);
477 if (ret)
478 return ret;
479
480 mode_cmd.width = var->xres;
481 mode_cmd.height = var->yres;
482 mode_cmd.pitches[0] = ((var->bits_per_pixel + 7) / 8) * mode_cmd.width;
483 mode_cmd.pixel_format =
484 drm_mode_legacy_fb_format(var->bits_per_pixel, depth);
485
486 cur_fb = par->set_fb;
487 if (cur_fb && cur_fb->width == mode_cmd.width &&
488 cur_fb->height == mode_cmd.height &&
489 cur_fb->pixel_format == mode_cmd.pixel_format &&
490 cur_fb->pitches[0] == mode_cmd.pitches[0])
491 return 0;
492
493 /* Need new buffer object ? */
494 new_bo_size = (size_t) mode_cmd.pitches[0] * (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 return 0;
521}
522
523static int vmw_fb_set_par(struct fb_info *info)
524{
525 struct vmw_fb_par *par = info->par;
526 struct vmw_private *vmw_priv = par->vmw_priv;
527 struct drm_mode_set set;
528 struct fb_var_screeninfo *var = &info->var;
529 struct drm_display_mode new_mode = { DRM_MODE("fb_mode",
530 DRM_MODE_TYPE_DRIVER,
531 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
532 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
533 };
534 struct drm_display_mode *old_mode;
535 struct drm_display_mode *mode;
536 int ret;
537
538 old_mode = par->set_mode;
539 mode = drm_mode_duplicate(vmw_priv->dev, &new_mode);
540 if (!mode) {
541 DRM_ERROR("Could not create new fb mode.\n");
542 return -ENOMEM;
543 }
544
545 mode->hdisplay = var->xres;
546 mode->vdisplay = var->yres;
547 vmw_guess_mode_timing(mode);
548
549 if (old_mode && drm_mode_equal(old_mode, mode)) {
550 drm_mode_destroy(vmw_priv->dev, mode);
551 mode = old_mode;
552 old_mode = NULL;
553 } else if (!vmw_kms_validate_mode_vram(vmw_priv,
554 mode->hdisplay *
555 DIV_ROUND_UP(var->bits_per_pixel, 8),
556 mode->vdisplay)) {
557 drm_mode_destroy(vmw_priv->dev, mode);
558 return -EINVAL;
559 }
560
561 mutex_lock(&par->bo_mutex);
562 drm_modeset_lock_all(vmw_priv->dev);
563 ret = vmw_fb_kms_framebuffer(info);
564 if (ret)
565 goto out_unlock;
566
567 par->fb_x = var->xoffset;
568 par->fb_y = var->yoffset;
569
570 set.crtc = par->crtc;
571 set.x = 0;
572 set.y = 0;
573 set.mode = mode;
574 set.fb = par->set_fb;
575 set.num_connectors = 1;
576 set.connectors = &par->con;
577
578 ret = drm_mode_set_config_internal(&set);
579 if (ret)
580 goto out_unlock;
581
582 if (!par->bo_ptr) {
583 struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(set.fb);
584
585 /*
586 * Pin before mapping. Since we don't know in what placement
587 * to pin, call into KMS to do it for us.
588 */
589 ret = vfb->pin(vfb);
590 if (ret) {
591 DRM_ERROR("Could not pin the fbdev framebuffer.\n");
592 goto out_unlock;
593 }
594
595 ret = ttm_bo_kmap(&par->vmw_bo->base, 0,
596 par->vmw_bo->base.num_pages, &par->map);
597 if (ret) {
598 vfb->unpin(vfb);
599 DRM_ERROR("Could not map the fbdev framebuffer.\n");
600 goto out_unlock;
601 }
602
603 par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &par->bo_iowrite);
604 }
605
606
607 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y,
608 par->set_fb->width, par->set_fb->height);
609
610 /* If there already was stuff dirty we wont
611 * schedule a new work, so lets do it now */
612
613 schedule_delayed_work(&par->local_work, 0);
614
615out_unlock:
616 if (old_mode)
617 drm_mode_destroy(vmw_priv->dev, old_mode);
618 par->set_mode = mode;
619
620 drm_modeset_unlock_all(vmw_priv->dev);
621 mutex_unlock(&par->bo_mutex);
622
623 return ret;
624}
625
626
627static struct fb_ops vmw_fb_ops = {
628 .owner = THIS_MODULE,
629 .fb_check_var = vmw_fb_check_var,
630 .fb_set_par = vmw_fb_set_par,
631 .fb_setcolreg = vmw_fb_setcolreg,
632 .fb_fillrect = vmw_fb_fillrect,
633 .fb_copyarea = vmw_fb_copyarea,
634 .fb_imageblit = vmw_fb_imageblit,
635 .fb_pan_display = vmw_fb_pan_display,
636 .fb_blank = vmw_fb_blank,
637};
638
639int vmw_fb_init(struct vmw_private *vmw_priv)
640{
641 struct device *device = &vmw_priv->dev->pdev->dev;
642 struct vmw_fb_par *par;
643 struct fb_info *info;
644 unsigned fb_width, fb_height;
645 unsigned fb_bpp, fb_depth, fb_offset, fb_pitch, fb_size;
646 struct drm_display_mode *init_mode;
647 int ret;
648
649 fb_bpp = 32;
650 fb_depth = 24;
651
652 /* XXX As shouldn't these be as well. */
653 fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
654 fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
655
656 fb_pitch = fb_width * fb_bpp / 8;
657 fb_size = fb_pitch * fb_height;
658 fb_offset = vmw_read(vmw_priv, SVGA_REG_FB_OFFSET);
659
660 info = framebuffer_alloc(sizeof(*par), device);
661 if (!info)
662 return -ENOMEM;
663
664 /*
665 * Par
666 */
667 vmw_priv->fb_info = info;
668 par = info->par;
669 memset(par, 0, sizeof(*par));
670 INIT_DELAYED_WORK(&par->local_work, &vmw_fb_dirty_flush);
671 par->vmw_priv = vmw_priv;
672 par->vmalloc = NULL;
673 par->max_width = fb_width;
674 par->max_height = fb_height;
675
676 drm_modeset_lock_all(vmw_priv->dev);
677 ret = vmw_kms_fbdev_init_data(vmw_priv, 0, par->max_width,
678 par->max_height, &par->con,
679 &par->crtc, &init_mode);
680 if (ret) {
681 drm_modeset_unlock_all(vmw_priv->dev);
682 goto err_kms;
683 }
684
685 info->var.xres = init_mode->hdisplay;
686 info->var.yres = init_mode->vdisplay;
687 drm_modeset_unlock_all(vmw_priv->dev);
688
689 /*
690 * Create buffers and alloc memory
691 */
692 par->vmalloc = vzalloc(fb_size);
693 if (unlikely(par->vmalloc == NULL)) {
694 ret = -ENOMEM;
695 goto err_free;
696 }
697
698 /*
699 * Fixed and var
700 */
701 strcpy(info->fix.id, "svgadrmfb");
702 info->fix.type = FB_TYPE_PACKED_PIXELS;
703 info->fix.visual = FB_VISUAL_TRUECOLOR;
704 info->fix.type_aux = 0;
705 info->fix.xpanstep = 1; /* doing it in hw */
706 info->fix.ypanstep = 1; /* doing it in hw */
707 info->fix.ywrapstep = 0;
708 info->fix.accel = FB_ACCEL_NONE;
709 info->fix.line_length = fb_pitch;
710
711 info->fix.smem_start = 0;
712 info->fix.smem_len = fb_size;
713
714 info->pseudo_palette = par->pseudo_palette;
715 info->screen_base = (char __iomem *)par->vmalloc;
716 info->screen_size = fb_size;
717
718 info->flags = FBINFO_DEFAULT;
719 info->fbops = &vmw_fb_ops;
720
721 /* 24 depth per default */
722 info->var.red.offset = 16;
723 info->var.green.offset = 8;
724 info->var.blue.offset = 0;
725 info->var.red.length = 8;
726 info->var.green.length = 8;
727 info->var.blue.length = 8;
728 info->var.transp.offset = 0;
729 info->var.transp.length = 0;
730
731 info->var.xres_virtual = fb_width;
732 info->var.yres_virtual = fb_height;
733 info->var.bits_per_pixel = fb_bpp;
734 info->var.xoffset = 0;
735 info->var.yoffset = 0;
736 info->var.activate = FB_ACTIVATE_NOW;
737 info->var.height = -1;
738 info->var.width = -1;
739
740 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
741 info->apertures = alloc_apertures(1);
742 if (!info->apertures) {
743 ret = -ENOMEM;
744 goto err_aper;
745 }
746 info->apertures->ranges[0].base = vmw_priv->vram_start;
747 info->apertures->ranges[0].size = vmw_priv->vram_size;
748
749 /*
750 * Dirty & Deferred IO
751 */
752 par->dirty.x1 = par->dirty.x2 = 0;
753 par->dirty.y1 = par->dirty.y2 = 0;
754 par->dirty.active = true;
755 spin_lock_init(&par->dirty.lock);
756 mutex_init(&par->bo_mutex);
757 info->fbdefio = &vmw_defio;
758 fb_deferred_io_init(info);
759
760 ret = register_framebuffer(info);
761 if (unlikely(ret != 0))
762 goto err_defio;
763
764 vmw_fb_set_par(info);
765
766 return 0;
767
768err_defio:
769 fb_deferred_io_cleanup(info);
770err_aper:
771err_free:
772 vfree(par->vmalloc);
773err_kms:
774 framebuffer_release(info);
775 vmw_priv->fb_info = NULL;
776
777 return ret;
778}
779
780int vmw_fb_close(struct vmw_private *vmw_priv)
781{
782 struct fb_info *info;
783 struct vmw_fb_par *par;
784
785 if (!vmw_priv->fb_info)
786 return 0;
787
788 info = vmw_priv->fb_info;
789 par = info->par;
790
791 /* ??? order */
792 fb_deferred_io_cleanup(info);
793 cancel_delayed_work_sync(&par->local_work);
794 unregister_framebuffer(info);
795
796 (void) vmw_fb_kms_detach(par, true, true);
797
798 vfree(par->vmalloc);
799 framebuffer_release(info);
800
801 return 0;
802}
803
804int 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 mutex_lock(&par->bo_mutex);
824 (void) vmw_fb_kms_detach(par, true, false);
825 mutex_unlock(&par->bo_mutex);
826
827 return 0;
828}
829
830int vmw_fb_on(struct vmw_private *vmw_priv)
831{
832 struct fb_info *info;
833 struct vmw_fb_par *par;
834 unsigned long flags;
835
836 if (!vmw_priv->fb_info)
837 return -EINVAL;
838
839 info = vmw_priv->fb_info;
840 par = info->par;
841
842 vmw_fb_set_par(info);
843 spin_lock_irqsave(&par->dirty.lock, flags);
844 par->dirty.active = true;
845 spin_unlock_irqrestore(&par->dirty.lock, flags);
846
847 return 0;
848}