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drm/vmwgfx: Kill a bunch of sparse warnings
[linux-2.6-block.git] / drivers / gpu / drm / vmwgfx / vmwgfx_fb.c
CommitLineData
fb1d9738
JB		 1/**************************************************************************
2 *
3 * Copyright © 2007 David Airlie
4 * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
22 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
23 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
24 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
25 * USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 **************************************************************************/
28
2d1a8a48
PG		 29#include <linux/export.h>
30
760285e7 31#include <drm/drmP.h>
fb1d9738 32#include "vmwgfx_drv.h"
a278724a 33#include "vmwgfx_kms.h"
fb1d9738 34
760285e7 35#include <drm/ttm/ttm_placement.h>
fb1d9738
JB		 36
37#define VMW_DIRTY_DELAY (HZ / 30)
38
39struct vmw_fb_par {
40 struct vmw_private *vmw_priv;
41
42 void *vmalloc;
43
a278724a 44 struct mutex bo_mutex;
fb1d9738
JB		 45 struct vmw_dma_buffer *vmw_bo;
46 struct ttm_bo_kmap_obj map;
a278724a
TH		 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;
fb1d9738
JB		 54
55 u32 pseudo_palette[17];
56
fb1d9738
JB		 57 unsigned max_width;
58 unsigned max_height;
59
fb1d9738
JB		 60 struct {
61 spinlock_t lock;
62 bool active;
63 unsigned x1;
64 unsigned y1;
65 unsigned x2;
66 unsigned y2;
67 } dirty;
a278724a
TH		 68
69 struct drm_crtc *crtc;
70 struct drm_connector *con;
71
72 bool local_mode;
fb1d9738
JB		 73};
74
75static int vmw_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
76 unsigned blue, unsigned transp,
77 struct fb_info *info)
78{
79 struct vmw_fb_par *par = info->par;
80 u32 *pal = par->pseudo_palette;
81
82 if (regno > 15) {
83 DRM_ERROR("Bad regno %u.\n", regno);
84 return 1;
85 }
86
a278724a 87 switch (par->set_fb->depth) {
fb1d9738
JB		 88 case 24:
89 case 32:
90 pal[regno] = ((red & 0xff00) << 8) |
91 (green & 0xff00) |
92 ((blue & 0xff00) >> 8);
93 break;
94 default:
a278724a
TH		 95 DRM_ERROR("Bad depth %u, bpp %u.\n", par->set_fb->depth,
96 par->set_fb->bits_per_pixel);
fb1d9738
JB		 97 return 1;
98 }
99
100 return 0;
101}
102
103static int vmw_fb_check_var(struct fb_var_screeninfo *var,
104 struct fb_info *info)
105{
106 int depth = var->bits_per_pixel;
107 struct vmw_fb_par *par = info->par;
108 struct vmw_private *vmw_priv = par->vmw_priv;
109
110 switch (var->bits_per_pixel) {
111 case 32:
112 depth = (var->transp.length > 0) ? 32 : 24;
113 break;
114 default:
115 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
116 return -EINVAL;
117 }
118
119 switch (depth) {
120 case 24:
121 var->red.offset = 16;
122 var->green.offset = 8;
123 var->blue.offset = 0;
124 var->red.length = 8;
125 var->green.length = 8;
126 var->blue.length = 8;
127 var->transp.length = 0;
128 var->transp.offset = 0;
129 break;
130 case 32:
131 var->red.offset = 16;
132 var->green.offset = 8;
133 var->blue.offset = 0;
134 var->red.length = 8;
135 var->green.length = 8;
136 var->blue.length = 8;
137 var->transp.length = 8;
138 var->transp.offset = 24;
139 break;
140 default:
141 DRM_ERROR("Bad depth %u.\n", depth);
142 return -EINVAL;
143 }
144
d7e1958d
JB		 145 if ((var->xoffset + var->xres) > par->max_width ||
146 (var->yoffset + var->yres) > par->max_height) {
fb1d9738
JB		 147 DRM_ERROR("Requested geom can not fit in framebuffer\n");
148 return -EINVAL;
149 }
150
e133e737 151 if (!vmw_kms_validate_mode_vram(vmw_priv,
aa6de142 152 var->xres * var->bits_per_pixel/8,
e133e737
TH		 153 var->yoffset + var->yres)) {
154 DRM_ERROR("Requested geom can not fit in framebuffer\n");
155 return -EINVAL;
156 }
157
fb1d9738
JB		 158 return 0;
159}
160
fb1d9738
JB		 161static int vmw_fb_blank(int blank, struct fb_info *info)
162{
163 return 0;
164}
165
166/*
167 * Dirty code
168 */
169
170static void vmw_fb_dirty_flush(struct vmw_fb_par *par)
171{
172 struct vmw_private *vmw_priv = par->vmw_priv;
173 struct fb_info *info = vmw_priv->fb_info;
a278724a
TH		 174 unsigned long irq_flags;
175 s32 dst_x1, dst_x2, dst_y1, dst_y2, w, h;
176 u32 cpp, max_x, max_y;
177 struct drm_clip_rect clip;
178 struct drm_framebuffer *cur_fb;
179 u8 *src_ptr, *dst_ptr;
fb1d9738 180
09e2601b
TH		 181 if (vmw_priv->suspended)
182 return;
183
a278724a
TH		 184 mutex_lock(&par->bo_mutex);
185 cur_fb = par->set_fb;
186 if (!cur_fb)
187 goto out_unlock;
fb1d9738 188
a278724a
TH		 189 spin_lock_irqsave(&par->dirty.lock, irq_flags);
190 if (!par->dirty.active) {
191 spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
192 goto out_unlock;
fb1d9738
JB		 193 }
194
a278724a
TH		 195 /*
196 * Handle panning when copying from vmalloc to framebuffer.
197 * Clip dirty area to framebuffer.
198 */
199 cpp = (cur_fb->bits_per_pixel + 7) / 8;
200 max_x = par->fb_x + cur_fb->width;
201 max_y = par->fb_y + cur_fb->height;
202
203 dst_x1 = par->dirty.x1 - par->fb_x;
204 dst_y1 = par->dirty.y1 - par->fb_y;
205 dst_x1 = max_t(s32, dst_x1, 0);
206 dst_y1 = max_t(s32, dst_y1, 0);
207
208 dst_x2 = par->dirty.x2 - par->fb_x;
209 dst_y2 = par->dirty.y2 - par->fb_y;
210 dst_x2 = min_t(s32, dst_x2, max_x);
211 dst_y2 = min_t(s32, dst_y2, max_y);
212 w = dst_x2 - dst_x1;
213 h = dst_y2 - dst_y1;
214 w = max_t(s32, 0, w);
215 h = max_t(s32, 0, h);
fb1d9738 216
a278724a
TH		 217 par->dirty.x1 = par->dirty.x2 = 0;
218 par->dirty.y1 = par->dirty.y2 = 0;
219 spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
220
221 if (w && h) {
222 dst_ptr = (u8 *)par->bo_ptr +
223 (dst_y1 * par->set_fb->pitches[0] + dst_x1 * cpp);
224 src_ptr = (u8 *)par->vmalloc +
225 ((dst_y1 + par->fb_y) * info->fix.line_length +
226 (dst_x1 + par->fb_x) * cpp);
227
228 while (h-- > 0) {
229 memcpy(dst_ptr, src_ptr, w*cpp);
230 dst_ptr += par->set_fb->pitches[0];
231 src_ptr += info->fix.line_length;
232 }
233
234 clip.x1 = dst_x1;
235 clip.x2 = dst_x2;
236 clip.y1 = dst_y1;
237 clip.y2 = dst_y2;
238
239 WARN_ON_ONCE(par->set_fb->funcs->dirty(cur_fb, NULL, 0, 0,
240 &clip, 1));
241 vmw_fifo_flush(vmw_priv, false);
fb1d9738 242 }
a278724a
TH		 243out_unlock:
244 mutex_unlock(&par->bo_mutex);
fb1d9738
JB		 245}
246
247static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
248 unsigned x1, unsigned y1,
249 unsigned width, unsigned height)
250{
251 struct fb_info *info = par->vmw_priv->fb_info;
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(&info->deferred_work, VMW_DIRTY_DELAY);
266 } else {
267 if (x1 < par->dirty.x1)
268 par->dirty.x1 = x1;
269 if (y1 < par->dirty.y1)
270 par->dirty.y1 = y1;
271 if (x2 > par->dirty.x2)
272 par->dirty.x2 = x2;
273 if (y2 > par->dirty.y2)
274 par->dirty.y2 = y2;
275 }
276 spin_unlock_irqrestore(&par->dirty.lock, flags);
277}
278
a278724a
TH		 279static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
280 struct fb_info *info)
281{
282 struct vmw_fb_par *par = info->par;
283
284 if ((var->xoffset + var->xres) > var->xres_virtual ||
285 (var->yoffset + var->yres) > var->yres_virtual) {
286 DRM_ERROR("Requested panning can not fit in framebuffer\n");
287 return -EINVAL;
288 }
289
290 mutex_lock(&par->bo_mutex);
291 par->fb_x = var->xoffset;
292 par->fb_y = var->yoffset;
293 if (par->set_fb)
294 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y, par->set_fb->width,
295 par->set_fb->height);
296 mutex_unlock(&par->bo_mutex);
297
298 return 0;
299}
300
fb1d9738
JB		 301static void vmw_deferred_io(struct fb_info *info,
302 struct list_head *pagelist)
303{
304 struct vmw_fb_par *par = info->par;
305 unsigned long start, end, min, max;
306 unsigned long flags;
307 struct page *page;
308 int y1, y2;
309
310 min = ULONG_MAX;
311 max = 0;
312 list_for_each_entry(page, pagelist, lru) {
313 start = page->index << PAGE_SHIFT;
314 end = start + PAGE_SIZE - 1;
315 min = min(min, start);
316 max = max(max, end);
317 }
318
319 if (min < max) {
320 y1 = min / info->fix.line_length;
321 y2 = (max / info->fix.line_length) + 1;
322
323 spin_lock_irqsave(&par->dirty.lock, flags);
324 par->dirty.x1 = 0;
325 par->dirty.y1 = y1;
326 par->dirty.x2 = info->var.xres;
327 par->dirty.y2 = y2;
328 spin_unlock_irqrestore(&par->dirty.lock, flags);
329 }
330
331 vmw_fb_dirty_flush(par);
332};
333
b9eb1a61 334static struct fb_deferred_io vmw_defio = {
fb1d9738
JB		 335 .delay = VMW_DIRTY_DELAY,
336 .deferred_io = vmw_deferred_io,
337};
338
339/*
340 * Draw code
341 */
342
343static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
344{
345 cfb_fillrect(info, rect);
346 vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
347 rect->width, rect->height);
348}
349
350static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
351{
352 cfb_copyarea(info, region);
353 vmw_fb_dirty_mark(info->par, region->dx, region->dy,
354 region->width, region->height);
355}
356
357static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image)
358{
359 cfb_imageblit(info, image);
360 vmw_fb_dirty_mark(info->par, image->dx, image->dy,
361 image->width, image->height);
362}
363
364/*
365 * Bring up code
366 */
367
fb1d9738
JB		 368static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
369 size_t size, struct vmw_dma_buffer **out)
370{
371 struct vmw_dma_buffer *vmw_bo;
fb1d9738
JB		 372 int ret;
373
294adf7d 374 (void) ttm_write_lock(&vmw_priv->reservation_sem, false);
fb1d9738
JB		 375
376 vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
294adf7d
TH		 377 if (!vmw_bo) {
378 ret = -ENOMEM;
fb1d9738 379 goto err_unlock;
294adf7d 380 }
fb1d9738
JB		 381
382 ret = vmw_dmabuf_init(vmw_priv, vmw_bo, size,
a278724a 383 &vmw_sys_placement,
fb1d9738
JB		 384 false,
385 &vmw_dmabuf_bo_free);
386 if (unlikely(ret != 0))
387 goto err_unlock; /* init frees the buffer on failure */
388
389 *out = vmw_bo;
12617971 390 ttm_write_unlock(&vmw_priv->reservation_sem);
fb1d9738
JB		 391
392 return 0;
393
394err_unlock:
12617971 395 ttm_write_unlock(&vmw_priv->reservation_sem);
fb1d9738
JB		 396 return ret;
397}
398
a278724a
TH		 399static int vmw_fb_compute_depth(struct fb_var_screeninfo *var,
400 int *depth)
401{
402 switch (var->bits_per_pixel) {
403 case 32:
404 *depth = (var->transp.length > 0) ? 32 : 24;
405 break;
406 default:
407 DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
408 return -EINVAL;
409 }
410
411 return 0;
412}
413
414static int vmw_fb_kms_detach(struct vmw_fb_par *par,
415 bool detach_bo,
416 bool unref_bo)
417{
418 struct drm_framebuffer *cur_fb = par->set_fb;
419 int ret;
420
421 /* Detach the KMS framebuffer from crtcs */
422 if (par->set_mode) {
423 struct drm_mode_set set;
424
425 set.crtc = par->crtc;
426 set.x = 0;
427 set.y = 0;
428 set.mode = NULL;
429 set.fb = NULL;
430 set.num_connectors = 1;
431 set.connectors = &par->con;
432 ret = drm_mode_set_config_internal(&set);
433 if (ret) {
434 DRM_ERROR("Could not unset a mode.\n");
435 return ret;
436 }
437 drm_mode_destroy(par->vmw_priv->dev, par->set_mode);
438 par->set_mode = NULL;
439 }
440
441 if (cur_fb) {
442 drm_framebuffer_unreference(cur_fb);
443 par->set_fb = NULL;
444 }
445
446 if (par->vmw_bo && detach_bo) {
447 if (par->bo_ptr) {
448 ttm_bo_kunmap(&par->map);
449 par->bo_ptr = NULL;
450 }
451 if (unref_bo)
452 vmw_dmabuf_unreference(&par->vmw_bo);
453 else
454 vmw_dmabuf_unpin(par->vmw_priv, par->vmw_bo, false);
455 }
456
457 return 0;
458}
459
460static int vmw_fb_kms_framebuffer(struct fb_info *info)
461{
462 struct drm_mode_fb_cmd mode_cmd;
463 struct vmw_fb_par *par = info->par;
464 struct fb_var_screeninfo *var = &info->var;
465 struct drm_framebuffer *cur_fb;
466 struct vmw_framebuffer *vfb;
467 int ret = 0;
468 size_t new_bo_size;
469
470 ret = vmw_fb_compute_depth(var, &mode_cmd.depth);
471 if (ret)
472 return ret;
473
474 mode_cmd.width = var->xres;
475 mode_cmd.height = var->yres;
476 mode_cmd.bpp = var->bits_per_pixel;
477 mode_cmd.pitch = ((mode_cmd.bpp + 7) / 8) * mode_cmd.width;
478
479 cur_fb = par->set_fb;
480 if (cur_fb && cur_fb->width == mode_cmd.width &&
481 cur_fb->height == mode_cmd.height &&
482 cur_fb->bits_per_pixel == mode_cmd.bpp &&
483 cur_fb->depth == mode_cmd.depth &&
484 cur_fb->pitches[0] == mode_cmd.pitch)
485 return 0;
486
487 /* Need new buffer object ? */
488 new_bo_size = (size_t) mode_cmd.pitch * (size_t) mode_cmd.height;
489 ret = vmw_fb_kms_detach(par,
490 par->bo_size < new_bo_size ||
491 par->bo_size > 2*new_bo_size,
492 true);
493 if (ret)
494 return ret;
495
496 if (!par->vmw_bo) {
497 ret = vmw_fb_create_bo(par->vmw_priv, new_bo_size,
498 &par->vmw_bo);
499 if (ret) {
500 DRM_ERROR("Failed creating a buffer object for "
501 "fbdev.\n");
502 return ret;
503 }
504 par->bo_size = new_bo_size;
505 }
506
507 vfb = vmw_kms_new_framebuffer(par->vmw_priv, par->vmw_bo, NULL,
508 true, &mode_cmd);
509 if (IS_ERR(vfb))
510 return PTR_ERR(vfb);
511
512 par->set_fb = &vfb->base;
513
514 if (!par->bo_ptr) {
515 /*
516 * Pin before mapping. Since we don't know in what placement
517 * to pin, call into KMS to do it for us.
518 */
519 ret = vfb->pin(vfb);
520 if (ret) {
521 DRM_ERROR("Could not pin the fbdev framebuffer.\n");
522 return ret;
523 }
524
525 ret = ttm_bo_kmap(&par->vmw_bo->base, 0,
526 par->vmw_bo->base.num_pages, &par->map);
527 if (ret) {
528 vfb->unpin(vfb);
529 DRM_ERROR("Could not map the fbdev framebuffer.\n");
530 return ret;
531 }
532
533 par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &par->bo_iowrite);
534 }
535
536 return 0;
537}
538
539static int vmw_fb_set_par(struct fb_info *info)
540{
541 struct vmw_fb_par *par = info->par;
542 struct vmw_private *vmw_priv = par->vmw_priv;
543 struct drm_mode_set set;
544 struct fb_var_screeninfo *var = &info->var;
545 struct drm_display_mode new_mode = { DRM_MODE("fb_mode",
546 DRM_MODE_TYPE_DRIVER,
547 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
548 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
549 };
550 struct drm_display_mode *old_mode;
551 struct drm_display_mode *mode;
552 int ret;
553
554 old_mode = par->set_mode;
555 mode = drm_mode_duplicate(vmw_priv->dev, &new_mode);
556 if (!mode) {
557 DRM_ERROR("Could not create new fb mode.\n");
558 return -ENOMEM;
559 }
560
561 mode->hdisplay = var->xres;
562 mode->vdisplay = var->yres;
563 vmw_guess_mode_timing(mode);
564
565 if (old_mode && drm_mode_equal(old_mode, mode)) {
566 drm_mode_destroy(vmw_priv->dev, mode);
567 mode = old_mode;
568 old_mode = NULL;
569 } else if (!vmw_kms_validate_mode_vram(vmw_priv,
570 mode->hdisplay *
571 (var->bits_per_pixel + 7) / 8,
572 mode->vdisplay)) {
573 drm_mode_destroy(vmw_priv->dev, mode);
574 return -EINVAL;
575 }
576
577 mutex_lock(&par->bo_mutex);
578 drm_modeset_lock_all(vmw_priv->dev);
579 ret = vmw_fb_kms_framebuffer(info);
580 if (ret)
581 goto out_unlock;
582
583 par->fb_x = var->xoffset;
584 par->fb_y = var->yoffset;
585
586 set.crtc = par->crtc;
587 set.x = 0;
588 set.y = 0;
589 set.mode = mode;
590 set.fb = par->set_fb;
591 set.num_connectors = 1;
592 set.connectors = &par->con;
593
594 ret = drm_mode_set_config_internal(&set);
595 if (ret)
596 goto out_unlock;
597
598 vmw_fb_dirty_mark(par, par->fb_x, par->fb_y,
599 par->set_fb->width, par->set_fb->height);
600
601 /* If there already was stuff dirty we wont
602 * schedule a new work, so lets do it now */
603
604#if (defined(VMWGFX_STANDALONE) && defined(VMWGFX_FB_DEFERRED))
605 schedule_delayed_work(&par->def_par.deferred_work, 0);
606#else
607 schedule_delayed_work(&info->deferred_work, 0);
608#endif
609
610out_unlock:
611 if (old_mode)
612 drm_mode_destroy(vmw_priv->dev, old_mode);
613 par->set_mode = mode;
614
615 drm_modeset_unlock_all(vmw_priv->dev);
616 mutex_unlock(&par->bo_mutex);
617
618 return ret;
619}
620
621
622static struct fb_ops vmw_fb_ops = {
623 .owner = THIS_MODULE,
624 .fb_check_var = vmw_fb_check_var,
625 .fb_set_par = vmw_fb_set_par,
626 .fb_setcolreg = vmw_fb_setcolreg,
627 .fb_fillrect = vmw_fb_fillrect,
628 .fb_copyarea = vmw_fb_copyarea,
629 .fb_imageblit = vmw_fb_imageblit,
630 .fb_pan_display = vmw_fb_pan_display,
631 .fb_blank = vmw_fb_blank,
632};
633
fb1d9738
JB		 634int vmw_fb_init(struct vmw_private *vmw_priv)
635{
636 struct device *device = &vmw_priv->dev->pdev->dev;
637 struct vmw_fb_par *par;
638 struct fb_info *info;
fb1d9738 639 unsigned fb_width, fb_height;
6558429b 640 unsigned fb_bpp, fb_depth, fb_offset, fb_pitch, fb_size;
a278724a 641 struct drm_display_mode *init_mode;
fb1d9738
JB		 642 int ret;
643
6558429b 644 fb_bpp = 32;
fb1d9738
JB		 645 fb_depth = 24;
646
d7e1958d
JB		 647 /* XXX As shouldn't these be as well. */
648 fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
649 fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
fb1d9738 650
6558429b 651 fb_pitch = fb_width * fb_bpp / 8;
d7e1958d 652 fb_size = fb_pitch * fb_height;
fb1d9738 653 fb_offset = vmw_read(vmw_priv, SVGA_REG_FB_OFFSET);
fb1d9738
JB		 654
655 info = framebuffer_alloc(sizeof(*par), device);
656 if (!info)
657 return -ENOMEM;
658
659 /*
660 * Par
661 */
662 vmw_priv->fb_info = info;
663 par = info->par;
a278724a 664 memset(par, 0, sizeof(*par));
fb1d9738 665 par->vmw_priv = vmw_priv;
fb1d9738
JB		 666 par->vmalloc = NULL;
667 par->max_width = fb_width;
668 par->max_height = fb_height;
669
a278724a
TH		 670 drm_modeset_lock_all(vmw_priv->dev);
671 ret = vmw_kms_fbdev_init_data(vmw_priv, 0, par->max_width,
672 par->max_height, &par->con,
673 &par->crtc, &init_mode);
674 if (ret) {
675 drm_modeset_unlock_all(vmw_priv->dev);
676 goto err_kms;
677 }
678
679 info->var.xres = init_mode->hdisplay;
680 info->var.yres = init_mode->vdisplay;
681 drm_modeset_unlock_all(vmw_priv->dev);
682
fb1d9738
JB		 683 /*
684 * Create buffers and alloc memory
685 */
a278724a 686 par->vmalloc = vzalloc(fb_size);
fb1d9738
JB		 687 if (unlikely(par->vmalloc == NULL)) {
688 ret = -ENOMEM;
689 goto err_free;
690 }
691
fb1d9738
JB		 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
fb1d9738 708 info->pseudo_palette = par->pseudo_palette;
b9eb1a61 709 info->screen_base = (char __iomem *)par->vmalloc;
fb1d9738
JB		 710 info->screen_size = fb_size;
711
712 info->flags = FBINFO_DEFAULT;
713 info->fbops = &vmw_fb_ops;
714
715 /* 24 depth per default */
716 info->var.red.offset = 16;
717 info->var.green.offset = 8;
718 info->var.blue.offset = 0;
719 info->var.red.length = 8;
720 info->var.green.length = 8;
721 info->var.blue.length = 8;
722 info->var.transp.offset = 0;
723 info->var.transp.length = 0;
724
725 info->var.xres_virtual = fb_width;
726 info->var.yres_virtual = fb_height;
a278724a 727 info->var.bits_per_pixel = fb_bpp;
fb1d9738
JB		 728 info->var.xoffset = 0;
729 info->var.yoffset = 0;
730 info->var.activate = FB_ACTIVATE_NOW;
731 info->var.height = -1;
732 info->var.width = -1;
733
fb2a99e1 734 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
1471ca9a
MS		 735 info->apertures = alloc_apertures(1);
736 if (!info->apertures) {
737 ret = -ENOMEM;
738 goto err_aper;
739 }
740 info->apertures->ranges[0].base = vmw_priv->vram_start;
741 info->apertures->ranges[0].size = vmw_priv->vram_size;
f2d12b8e 742
fb1d9738
JB		 743 /*
744 * Dirty & Deferred IO
745 */
746 par->dirty.x1 = par->dirty.x2 = 0;
c39721c7 747 par->dirty.y1 = par->dirty.y2 = 0;
fb1d9738
JB		 748 par->dirty.active = true;
749 spin_lock_init(&par->dirty.lock);
a278724a 750 mutex_init(&par->bo_mutex);
fb1d9738
JB		 751 info->fbdefio = &vmw_defio;
752 fb_deferred_io_init(info);
753
754 ret = register_framebuffer(info);
755 if (unlikely(ret != 0))
756 goto err_defio;
757
a278724a
TH		 758 vmw_fb_set_par(info);
759
fb1d9738
JB		 760 return 0;
761
762err_defio:
763 fb_deferred_io_cleanup(info);
1471ca9a 764err_aper:
fb1d9738
JB		 765err_free:
766 vfree(par->vmalloc);
a278724a 767err_kms:
fb1d9738
JB		 768 framebuffer_release(info);
769 vmw_priv->fb_info = NULL;
770
771 return ret;
772}
773
774int vmw_fb_close(struct vmw_private *vmw_priv)
775{
776 struct fb_info *info;
777 struct vmw_fb_par *par;
fb1d9738
JB		 778
779 if (!vmw_priv->fb_info)
780 return 0;
781
782 info = vmw_priv->fb_info;
783 par = info->par;
fb1d9738
JB		 784
785 /* ??? order */
786 fb_deferred_io_cleanup(info);
787 unregister_framebuffer(info);
788
a278724a 789 (void) vmw_fb_kms_detach(par, true, true);
fb1d9738
JB		 790
791 vfree(par->vmalloc);
792 framebuffer_release(info);
793
794 return 0;
795}
796
fb1d9738
JB		 797int vmw_fb_off(struct vmw_private *vmw_priv)
798{
799 struct fb_info *info;
800 struct vmw_fb_par *par;
801 unsigned long flags;
802
803 if (!vmw_priv->fb_info)
804 return -EINVAL;
805
806 info = vmw_priv->fb_info;
807 par = info->par;
808
809 spin_lock_irqsave(&par->dirty.lock, flags);
810 par->dirty.active = false;
811 spin_unlock_irqrestore(&par->dirty.lock, flags);
812
43829731 813 flush_delayed_work(&info->deferred_work);
fb1d9738 814
a278724a
TH		 815 mutex_lock(&par->bo_mutex);
816 (void) vmw_fb_kms_detach(par, true, false);
817 mutex_unlock(&par->bo_mutex);
fb1d9738
JB		 818
819 return 0;
820}
821
822int vmw_fb_on(struct vmw_private *vmw_priv)
823{
824 struct fb_info *info;
825 struct vmw_fb_par *par;
826 unsigned long flags;
fb1d9738
JB		 827
828 if (!vmw_priv->fb_info)
829 return -EINVAL;
830
831 info = vmw_priv->fb_info;
832 par = info->par;
833
a278724a 834 vmw_fb_set_par(info);
fb1d9738
JB		 835 spin_lock_irqsave(&par->dirty.lock, flags);
836 par->dirty.active = true;
837 spin_unlock_irqrestore(&par->dirty.lock, flags);
a278724a 838
fb1d9738
JB		 839 return 0;
840}
Linux 6.x block layer and io_uring tree(s)