lightnvm: NVM should depend on HAS_DMA
[deliverable/linux.git] / drivers / gpu / drm / vmwgfx / vmwgfx_stdu.c
1 /******************************************************************************
2 *
3 * COPYRIGHT © 2014-2015 VMware, Inc., Palo Alto, CA., USA
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 ******************************************************************************/
27
28 #include "vmwgfx_kms.h"
29 #include "device_include/svga3d_surfacedefs.h"
30 #include <drm/drm_plane_helper.h>
31
32 #define vmw_crtc_to_stdu(x) \
33 container_of(x, struct vmw_screen_target_display_unit, base.crtc)
34 #define vmw_encoder_to_stdu(x) \
35 container_of(x, struct vmw_screen_target_display_unit, base.encoder)
36 #define vmw_connector_to_stdu(x) \
37 container_of(x, struct vmw_screen_target_display_unit, base.connector)
38
39
40
41 enum stdu_content_type {
42 SAME_AS_DISPLAY = 0,
43 SEPARATE_SURFACE,
44 SEPARATE_DMA
45 };
46
47 /**
48 * struct vmw_stdu_dirty - closure structure for the update functions
49 *
50 * @base: The base type we derive from. Used by vmw_kms_helper_dirty().
51 * @transfer: Transfer direction for DMA command.
52 * @left: Left side of bounding box.
53 * @right: Right side of bounding box.
54 * @top: Top side of bounding box.
55 * @bottom: Bottom side of bounding box.
56 * @buf: DMA buffer when DMA-ing between buffer and screen targets.
57 * @sid: Surface ID when copying between surface and screen targets.
58 */
59 struct vmw_stdu_dirty {
60 struct vmw_kms_dirty base;
61 SVGA3dTransferType transfer;
62 s32 left, right, top, bottom;
63 u32 pitch;
64 union {
65 struct vmw_dma_buffer *buf;
66 u32 sid;
67 };
68 };
69
70 /*
71 * SVGA commands that are used by this code. Please see the device headers
72 * for explanation.
73 */
74 struct vmw_stdu_update {
75 SVGA3dCmdHeader header;
76 SVGA3dCmdUpdateGBScreenTarget body;
77 };
78
79 struct vmw_stdu_dma {
80 SVGA3dCmdHeader header;
81 SVGA3dCmdSurfaceDMA body;
82 };
83
84 struct vmw_stdu_surface_copy {
85 SVGA3dCmdHeader header;
86 SVGA3dCmdSurfaceCopy body;
87 };
88
89
90 /**
91 * struct vmw_screen_target_display_unit
92 *
93 * @base: VMW specific DU structure
94 * @display_srf: surface to be displayed. The dimension of this will always
95 * match the display mode. If the display mode matches
96 * content_vfbs dimensions, then this is a pointer into the
97 * corresponding field in content_vfbs. If not, then this
98 * is a separate buffer to which content_vfbs will blit to.
99 * @content_type: content_fb type
100 * @defined: true if the current display unit has been initialized
101 */
102 struct vmw_screen_target_display_unit {
103 struct vmw_display_unit base;
104
105 struct vmw_surface *display_srf;
106 enum stdu_content_type content_fb_type;
107
108 bool defined;
109 };
110
111
112
113 static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu);
114
115
116
117 /******************************************************************************
118 * Screen Target Display Unit helper Functions
119 *****************************************************************************/
120
121 /**
122 * vmw_stdu_unpin_display - unpins the resource associated with display surface
123 *
124 * @stdu: contains the display surface
125 *
126 * If the display surface was privatedly allocated by
127 * vmw_surface_gb_priv_define() and not registered as a framebuffer, then it
128 * won't be automatically cleaned up when all the framebuffers are freed. As
129 * such, we have to explicitly call vmw_resource_unreference() to get it freed.
130 */
131 static void vmw_stdu_unpin_display(struct vmw_screen_target_display_unit *stdu)
132 {
133 if (stdu->display_srf) {
134 struct vmw_resource *res = &stdu->display_srf->res;
135
136 vmw_resource_unpin(res);
137 vmw_surface_unreference(&stdu->display_srf);
138 }
139 }
140
141
142
143 /******************************************************************************
144 * Screen Target Display Unit CRTC Functions
145 *****************************************************************************/
146
147
148 /**
149 * vmw_stdu_crtc_destroy - cleans up the STDU
150 *
151 * @crtc: used to get a reference to the containing STDU
152 */
153 static void vmw_stdu_crtc_destroy(struct drm_crtc *crtc)
154 {
155 vmw_stdu_destroy(vmw_crtc_to_stdu(crtc));
156 }
157
158 /**
159 * vmw_stdu_define_st - Defines a Screen Target
160 *
161 * @dev_priv: VMW DRM device
162 * @stdu: display unit to create a Screen Target for
163 * @mode: The mode to set.
164 * @crtc_x: X coordinate of screen target relative to framebuffer origin.
165 * @crtc_y: Y coordinate of screen target relative to framebuffer origin.
166 *
167 * Creates a STDU that we can used later. This function is called whenever the
168 * framebuffer size changes.
169 *
170 * RETURNs:
171 * 0 on success, error code on failure
172 */
173 static int vmw_stdu_define_st(struct vmw_private *dev_priv,
174 struct vmw_screen_target_display_unit *stdu,
175 struct drm_display_mode *mode,
176 int crtc_x, int crtc_y)
177 {
178 struct {
179 SVGA3dCmdHeader header;
180 SVGA3dCmdDefineGBScreenTarget body;
181 } *cmd;
182
183 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
184
185 if (unlikely(cmd == NULL)) {
186 DRM_ERROR("Out of FIFO space defining Screen Target\n");
187 return -ENOMEM;
188 }
189
190 cmd->header.id = SVGA_3D_CMD_DEFINE_GB_SCREENTARGET;
191 cmd->header.size = sizeof(cmd->body);
192
193 cmd->body.stid = stdu->base.unit;
194 cmd->body.width = mode->hdisplay;
195 cmd->body.height = mode->vdisplay;
196 cmd->body.flags = (0 == cmd->body.stid) ? SVGA_STFLAG_PRIMARY : 0;
197 cmd->body.dpi = 0;
198 if (stdu->base.is_implicit) {
199 cmd->body.xRoot = crtc_x;
200 cmd->body.yRoot = crtc_y;
201 } else {
202 cmd->body.xRoot = stdu->base.gui_x;
203 cmd->body.yRoot = stdu->base.gui_y;
204 }
205 stdu->base.set_gui_x = cmd->body.xRoot;
206 stdu->base.set_gui_y = cmd->body.yRoot;
207
208 vmw_fifo_commit(dev_priv, sizeof(*cmd));
209
210 stdu->defined = true;
211
212 return 0;
213 }
214
215
216
217 /**
218 * vmw_stdu_bind_st - Binds a surface to a Screen Target
219 *
220 * @dev_priv: VMW DRM device
221 * @stdu: display unit affected
222 * @res: Buffer to bind to the screen target. Set to NULL to blank screen.
223 *
224 * Binding a surface to a Screen Target the same as flipping
225 */
226 static int vmw_stdu_bind_st(struct vmw_private *dev_priv,
227 struct vmw_screen_target_display_unit *stdu,
228 struct vmw_resource *res)
229 {
230 SVGA3dSurfaceImageId image;
231
232 struct {
233 SVGA3dCmdHeader header;
234 SVGA3dCmdBindGBScreenTarget body;
235 } *cmd;
236
237
238 if (!stdu->defined) {
239 DRM_ERROR("No screen target defined\n");
240 return -EINVAL;
241 }
242
243 /* Set up image using information in vfb */
244 memset(&image, 0, sizeof(image));
245 image.sid = res ? res->id : SVGA3D_INVALID_ID;
246
247 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
248
249 if (unlikely(cmd == NULL)) {
250 DRM_ERROR("Out of FIFO space binding a screen target\n");
251 return -ENOMEM;
252 }
253
254 cmd->header.id = SVGA_3D_CMD_BIND_GB_SCREENTARGET;
255 cmd->header.size = sizeof(cmd->body);
256
257 cmd->body.stid = stdu->base.unit;
258 cmd->body.image = image;
259
260 vmw_fifo_commit(dev_priv, sizeof(*cmd));
261
262 return 0;
263 }
264
265 /**
266 * vmw_stdu_populate_update - populate an UPDATE_GB_SCREENTARGET command with a
267 * bounding box.
268 *
269 * @cmd: Pointer to command stream.
270 * @unit: Screen target unit.
271 * @left: Left side of bounding box.
272 * @right: Right side of bounding box.
273 * @top: Top side of bounding box.
274 * @bottom: Bottom side of bounding box.
275 */
276 static void vmw_stdu_populate_update(void *cmd, int unit,
277 s32 left, s32 right, s32 top, s32 bottom)
278 {
279 struct vmw_stdu_update *update = cmd;
280
281 update->header.id = SVGA_3D_CMD_UPDATE_GB_SCREENTARGET;
282 update->header.size = sizeof(update->body);
283
284 update->body.stid = unit;
285 update->body.rect.x = left;
286 update->body.rect.y = top;
287 update->body.rect.w = right - left;
288 update->body.rect.h = bottom - top;
289 }
290
291 /**
292 * vmw_stdu_update_st - Full update of a Screen Target
293 *
294 * @dev_priv: VMW DRM device
295 * @stdu: display unit affected
296 *
297 * This function needs to be called whenever the content of a screen
298 * target has changed completely. Typically as a result of a backing
299 * surface change.
300 *
301 * RETURNS:
302 * 0 on success, error code on failure
303 */
304 static int vmw_stdu_update_st(struct vmw_private *dev_priv,
305 struct vmw_screen_target_display_unit *stdu)
306 {
307 struct vmw_stdu_update *cmd;
308 struct drm_crtc *crtc = &stdu->base.crtc;
309
310 if (!stdu->defined) {
311 DRM_ERROR("No screen target defined");
312 return -EINVAL;
313 }
314
315 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
316
317 if (unlikely(cmd == NULL)) {
318 DRM_ERROR("Out of FIFO space updating a Screen Target\n");
319 return -ENOMEM;
320 }
321
322 vmw_stdu_populate_update(cmd, stdu->base.unit, 0, crtc->mode.hdisplay,
323 0, crtc->mode.vdisplay);
324
325 vmw_fifo_commit(dev_priv, sizeof(*cmd));
326
327 return 0;
328 }
329
330
331
332 /**
333 * vmw_stdu_destroy_st - Destroy a Screen Target
334 *
335 * @dev_priv: VMW DRM device
336 * @stdu: display unit to destroy
337 */
338 static int vmw_stdu_destroy_st(struct vmw_private *dev_priv,
339 struct vmw_screen_target_display_unit *stdu)
340 {
341 int ret;
342
343 struct {
344 SVGA3dCmdHeader header;
345 SVGA3dCmdDestroyGBScreenTarget body;
346 } *cmd;
347
348
349 /* Nothing to do if not successfully defined */
350 if (unlikely(!stdu->defined))
351 return 0;
352
353 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
354
355 if (unlikely(cmd == NULL)) {
356 DRM_ERROR("Out of FIFO space, screen target not destroyed\n");
357 return -ENOMEM;
358 }
359
360 cmd->header.id = SVGA_3D_CMD_DESTROY_GB_SCREENTARGET;
361 cmd->header.size = sizeof(cmd->body);
362
363 cmd->body.stid = stdu->base.unit;
364
365 vmw_fifo_commit(dev_priv, sizeof(*cmd));
366
367 /* Force sync */
368 ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ);
369 if (unlikely(ret != 0))
370 DRM_ERROR("Failed to sync with HW");
371
372 stdu->defined = false;
373
374 return ret;
375 }
376
377 /**
378 * vmw_stdu_bind_fb - Bind an fb to a defined screen target
379 *
380 * @dev_priv: Pointer to a device private struct.
381 * @crtc: The crtc holding the screen target.
382 * @mode: The mode currently used by the screen target. Must be non-NULL.
383 * @new_fb: The new framebuffer to bind. Must be non-NULL.
384 *
385 * RETURNS:
386 * 0 on success, error code on failure.
387 */
388 static int vmw_stdu_bind_fb(struct vmw_private *dev_priv,
389 struct drm_crtc *crtc,
390 struct drm_display_mode *mode,
391 struct drm_framebuffer *new_fb)
392 {
393 struct vmw_screen_target_display_unit *stdu = vmw_crtc_to_stdu(crtc);
394 struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(new_fb);
395 struct vmw_surface *new_display_srf = NULL;
396 enum stdu_content_type new_content_type;
397 struct vmw_framebuffer_surface *new_vfbs;
398 int ret;
399
400 WARN_ON_ONCE(!stdu->defined);
401
402 new_vfbs = (vfb->dmabuf) ? NULL : vmw_framebuffer_to_vfbs(new_fb);
403
404 if (new_vfbs && new_vfbs->surface->base_size.width == mode->hdisplay &&
405 new_vfbs->surface->base_size.height == mode->vdisplay)
406 new_content_type = SAME_AS_DISPLAY;
407 else if (vfb->dmabuf)
408 new_content_type = SEPARATE_DMA;
409 else
410 new_content_type = SEPARATE_SURFACE;
411
412 if (new_content_type != SAME_AS_DISPLAY &&
413 !stdu->display_srf) {
414 struct vmw_surface content_srf;
415 struct drm_vmw_size display_base_size = {0};
416
417 display_base_size.width = mode->hdisplay;
418 display_base_size.height = mode->vdisplay;
419 display_base_size.depth = 1;
420
421 /*
422 * If content buffer is a DMA buf, then we have to construct
423 * surface info
424 */
425 if (new_content_type == SEPARATE_DMA) {
426
427 switch (new_fb->bits_per_pixel) {
428 case 32:
429 content_srf.format = SVGA3D_X8R8G8B8;
430 break;
431
432 case 16:
433 content_srf.format = SVGA3D_R5G6B5;
434 break;
435
436 case 8:
437 content_srf.format = SVGA3D_P8;
438 break;
439
440 default:
441 DRM_ERROR("Invalid format\n");
442 return -EINVAL;
443 }
444
445 content_srf.flags = 0;
446 content_srf.mip_levels[0] = 1;
447 content_srf.multisample_count = 0;
448 } else {
449 content_srf = *new_vfbs->surface;
450 }
451
452
453 ret = vmw_surface_gb_priv_define(crtc->dev,
454 0, /* because kernel visible only */
455 content_srf.flags,
456 content_srf.format,
457 true, /* a scanout buffer */
458 content_srf.mip_levels[0],
459 content_srf.multisample_count,
460 0,
461 display_base_size,
462 &new_display_srf);
463 if (unlikely(ret != 0)) {
464 DRM_ERROR("Could not allocate screen target surface.\n");
465 return ret;
466 }
467 } else if (new_content_type == SAME_AS_DISPLAY) {
468 new_display_srf = vmw_surface_reference(new_vfbs->surface);
469 }
470
471 if (new_display_srf) {
472 /* Pin new surface before flipping */
473 ret = vmw_resource_pin(&new_display_srf->res, false);
474 if (ret)
475 goto out_srf_unref;
476
477 ret = vmw_stdu_bind_st(dev_priv, stdu, &new_display_srf->res);
478 if (ret)
479 goto out_srf_unpin;
480
481 /* Unpin and unreference old surface */
482 vmw_stdu_unpin_display(stdu);
483
484 /* Transfer the reference */
485 stdu->display_srf = new_display_srf;
486 new_display_srf = NULL;
487 }
488
489 crtc->primary->fb = new_fb;
490 stdu->content_fb_type = new_content_type;
491 return 0;
492
493 out_srf_unpin:
494 vmw_resource_unpin(&new_display_srf->res);
495 out_srf_unref:
496 vmw_surface_unreference(&new_display_srf);
497 return ret;
498 }
499
500 /**
501 * vmw_stdu_crtc_set_config - Sets a mode
502 *
503 * @set: mode parameters
504 *
505 * This function is the device-specific portion of the DRM CRTC mode set.
506 * For the SVGA device, we do this by defining a Screen Target, binding a
507 * GB Surface to that target, and finally update the screen target.
508 *
509 * RETURNS:
510 * 0 on success, error code otherwise
511 */
512 static int vmw_stdu_crtc_set_config(struct drm_mode_set *set)
513 {
514 struct vmw_private *dev_priv;
515 struct vmw_framebuffer *vfb;
516 struct vmw_screen_target_display_unit *stdu;
517 struct drm_display_mode *mode;
518 struct drm_framebuffer *new_fb;
519 struct drm_crtc *crtc;
520 struct drm_encoder *encoder;
521 struct drm_connector *connector;
522 bool turning_off;
523 int ret;
524
525
526 if (!set || !set->crtc)
527 return -EINVAL;
528
529 crtc = set->crtc;
530 stdu = vmw_crtc_to_stdu(crtc);
531 mode = set->mode;
532 new_fb = set->fb;
533 dev_priv = vmw_priv(crtc->dev);
534 turning_off = set->num_connectors == 0 || !mode || !new_fb;
535 vfb = (new_fb) ? vmw_framebuffer_to_vfb(new_fb) : NULL;
536
537 if (set->num_connectors > 1) {
538 DRM_ERROR("Too many connectors\n");
539 return -EINVAL;
540 }
541
542 if (set->num_connectors == 1 &&
543 set->connectors[0] != &stdu->base.connector) {
544 DRM_ERROR("Connectors don't match %p %p\n",
545 set->connectors[0], &stdu->base.connector);
546 return -EINVAL;
547 }
548
549 if (!turning_off && (set->x + mode->hdisplay > new_fb->width ||
550 set->y + mode->vdisplay > new_fb->height)) {
551 DRM_ERROR("Set outside of framebuffer\n");
552 return -EINVAL;
553 }
554
555 /* Only one active implicit frame-buffer at a time. */
556 mutex_lock(&dev_priv->global_kms_state_mutex);
557 if (!turning_off && stdu->base.is_implicit && dev_priv->implicit_fb &&
558 !(dev_priv->num_implicit == 1 && stdu->base.active_implicit)
559 && dev_priv->implicit_fb != vfb) {
560 mutex_unlock(&dev_priv->global_kms_state_mutex);
561 DRM_ERROR("Multiple implicit framebuffers not supported.\n");
562 return -EINVAL;
563 }
564 mutex_unlock(&dev_priv->global_kms_state_mutex);
565
566 /* Since they always map one to one these are safe */
567 connector = &stdu->base.connector;
568 encoder = &stdu->base.encoder;
569
570 if (stdu->defined) {
571 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
572 if (ret)
573 return ret;
574
575 vmw_stdu_unpin_display(stdu);
576 (void) vmw_stdu_update_st(dev_priv, stdu);
577 vmw_kms_del_active(dev_priv, &stdu->base);
578
579 ret = vmw_stdu_destroy_st(dev_priv, stdu);
580 if (ret)
581 return ret;
582
583 crtc->primary->fb = NULL;
584 crtc->enabled = false;
585 encoder->crtc = NULL;
586 connector->encoder = NULL;
587 stdu->content_fb_type = SAME_AS_DISPLAY;
588 crtc->x = set->x;
589 crtc->y = set->y;
590 }
591
592 if (turning_off)
593 return 0;
594
595 /*
596 * Steps to displaying a surface, assume surface is already
597 * bound:
598 * 1. define a screen target
599 * 2. bind a fb to the screen target
600 * 3. update that screen target (this is done later by
601 * vmw_kms_stdu_do_surface_dirty_or_present)
602 */
603 /*
604 * Note on error handling: We can't really restore the crtc to
605 * it's original state on error, but we at least update the
606 * current state to what's submitted to hardware to enable
607 * future recovery.
608 */
609 vmw_svga_enable(dev_priv);
610 ret = vmw_stdu_define_st(dev_priv, stdu, mode, set->x, set->y);
611 if (ret)
612 return ret;
613
614 crtc->x = set->x;
615 crtc->y = set->y;
616 crtc->mode = *mode;
617
618 ret = vmw_stdu_bind_fb(dev_priv, crtc, mode, new_fb);
619 if (ret)
620 return ret;
621
622 vmw_kms_add_active(dev_priv, &stdu->base, vfb);
623 crtc->enabled = true;
624 connector->encoder = encoder;
625 encoder->crtc = crtc;
626
627 return 0;
628 }
629
630 /**
631 * vmw_stdu_crtc_page_flip - Binds a buffer to a screen target
632 *
633 * @crtc: CRTC to attach FB to
634 * @fb: FB to attach
635 * @event: Event to be posted. This event should've been alloced
636 * using k[mz]alloc, and should've been completely initialized.
637 * @page_flip_flags: Input flags.
638 *
639 * If the STDU uses the same display and content buffers, i.e. a true flip,
640 * this function will replace the existing display buffer with the new content
641 * buffer.
642 *
643 * If the STDU uses different display and content buffers, i.e. a blit, then
644 * only the content buffer will be updated.
645 *
646 * RETURNS:
647 * 0 on success, error code on failure
648 */
649 static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
650 struct drm_framebuffer *new_fb,
651 struct drm_pending_vblank_event *event,
652 uint32_t flags)
653
654 {
655 struct vmw_private *dev_priv = vmw_priv(crtc->dev);
656 struct vmw_screen_target_display_unit *stdu;
657 struct drm_vmw_rect vclips;
658 struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(new_fb);
659 int ret;
660
661 dev_priv = vmw_priv(crtc->dev);
662 stdu = vmw_crtc_to_stdu(crtc);
663
664 if (!stdu->defined || !vmw_kms_crtc_flippable(dev_priv, crtc))
665 return -EINVAL;
666
667 ret = vmw_stdu_bind_fb(dev_priv, crtc, &crtc->mode, new_fb);
668 if (ret)
669 return ret;
670
671 if (stdu->base.is_implicit)
672 vmw_kms_update_implicit_fb(dev_priv, crtc);
673
674 vclips.x = crtc->x;
675 vclips.y = crtc->y;
676 vclips.w = crtc->mode.hdisplay;
677 vclips.h = crtc->mode.vdisplay;
678 if (vfb->dmabuf)
679 ret = vmw_kms_stdu_dma(dev_priv, NULL, vfb, NULL, NULL, &vclips,
680 1, 1, true, false);
681 else
682 ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, &vclips,
683 NULL, 0, 0, 1, 1, NULL);
684 if (ret)
685 return ret;
686
687 if (event) {
688 struct vmw_fence_obj *fence = NULL;
689 struct drm_file *file_priv = event->base.file_priv;
690
691 vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
692 if (!fence)
693 return -ENOMEM;
694
695 ret = vmw_event_fence_action_queue(file_priv, fence,
696 &event->base,
697 &event->event.tv_sec,
698 &event->event.tv_usec,
699 true);
700 vmw_fence_obj_unreference(&fence);
701 } else {
702 vmw_fifo_flush(dev_priv, false);
703 }
704
705 return 0;
706 }
707
708
709 /**
710 * vmw_stdu_dmabuf_clip - Callback to encode a suface DMA command cliprect
711 *
712 * @dirty: The closure structure.
713 *
714 * Encodes a surface DMA command cliprect and updates the bounding box
715 * for the DMA.
716 */
717 static void vmw_stdu_dmabuf_clip(struct vmw_kms_dirty *dirty)
718 {
719 struct vmw_stdu_dirty *ddirty =
720 container_of(dirty, struct vmw_stdu_dirty, base);
721 struct vmw_stdu_dma *cmd = dirty->cmd;
722 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
723
724 blit += dirty->num_hits;
725 blit->srcx = dirty->fb_x;
726 blit->srcy = dirty->fb_y;
727 blit->x = dirty->unit_x1;
728 blit->y = dirty->unit_y1;
729 blit->d = 1;
730 blit->w = dirty->unit_x2 - dirty->unit_x1;
731 blit->h = dirty->unit_y2 - dirty->unit_y1;
732 dirty->num_hits++;
733
734 if (ddirty->transfer != SVGA3D_WRITE_HOST_VRAM)
735 return;
736
737 /* Destination bounding box */
738 ddirty->left = min_t(s32, ddirty->left, dirty->unit_x1);
739 ddirty->top = min_t(s32, ddirty->top, dirty->unit_y1);
740 ddirty->right = max_t(s32, ddirty->right, dirty->unit_x2);
741 ddirty->bottom = max_t(s32, ddirty->bottom, dirty->unit_y2);
742 }
743
744 /**
745 * vmw_stdu_dmabuf_fifo_commit - Callback to fill in and submit a DMA command.
746 *
747 * @dirty: The closure structure.
748 *
749 * Fills in the missing fields in a DMA command, and optionally encodes
750 * a screen target update command, depending on transfer direction.
751 */
752 static void vmw_stdu_dmabuf_fifo_commit(struct vmw_kms_dirty *dirty)
753 {
754 struct vmw_stdu_dirty *ddirty =
755 container_of(dirty, struct vmw_stdu_dirty, base);
756 struct vmw_screen_target_display_unit *stdu =
757 container_of(dirty->unit, typeof(*stdu), base);
758 struct vmw_stdu_dma *cmd = dirty->cmd;
759 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
760 SVGA3dCmdSurfaceDMASuffix *suffix =
761 (SVGA3dCmdSurfaceDMASuffix *) &blit[dirty->num_hits];
762 size_t blit_size = sizeof(*blit) * dirty->num_hits + sizeof(*suffix);
763
764 if (!dirty->num_hits) {
765 vmw_fifo_commit(dirty->dev_priv, 0);
766 return;
767 }
768
769 cmd->header.id = SVGA_3D_CMD_SURFACE_DMA;
770 cmd->header.size = sizeof(cmd->body) + blit_size;
771 vmw_bo_get_guest_ptr(&ddirty->buf->base, &cmd->body.guest.ptr);
772 cmd->body.guest.pitch = ddirty->pitch;
773 cmd->body.host.sid = stdu->display_srf->res.id;
774 cmd->body.host.face = 0;
775 cmd->body.host.mipmap = 0;
776 cmd->body.transfer = ddirty->transfer;
777 suffix->suffixSize = sizeof(*suffix);
778 suffix->maximumOffset = ddirty->buf->base.num_pages * PAGE_SIZE;
779
780 if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) {
781 blit_size += sizeof(struct vmw_stdu_update);
782
783 vmw_stdu_populate_update(&suffix[1], stdu->base.unit,
784 ddirty->left, ddirty->right,
785 ddirty->top, ddirty->bottom);
786 }
787
788 vmw_fifo_commit(dirty->dev_priv, sizeof(*cmd) + blit_size);
789
790 ddirty->left = ddirty->top = S32_MAX;
791 ddirty->right = ddirty->bottom = S32_MIN;
792 }
793
794 /**
795 * vmw_kms_stdu_dma - Perform a DMA transfer between a dma-buffer backed
796 * framebuffer and the screen target system.
797 *
798 * @dev_priv: Pointer to the device private structure.
799 * @file_priv: Pointer to a struct drm-file identifying the caller. May be
800 * set to NULL, but then @user_fence_rep must also be set to NULL.
801 * @vfb: Pointer to the dma-buffer backed framebuffer.
802 * @clips: Array of clip rects. Either @clips or @vclips must be NULL.
803 * @vclips: Alternate array of clip rects. Either @clips or @vclips must
804 * be NULL.
805 * @num_clips: Number of clip rects in @clips or @vclips.
806 * @increment: Increment to use when looping over @clips or @vclips.
807 * @to_surface: Whether to DMA to the screen target system as opposed to
808 * from the screen target system.
809 * @interruptible: Whether to perform waits interruptible if possible.
810 *
811 * If DMA-ing till the screen target system, the function will also notify
812 * the screen target system that a bounding box of the cliprects has been
813 * updated.
814 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
815 * interrupted.
816 */
817 int vmw_kms_stdu_dma(struct vmw_private *dev_priv,
818 struct drm_file *file_priv,
819 struct vmw_framebuffer *vfb,
820 struct drm_vmw_fence_rep __user *user_fence_rep,
821 struct drm_clip_rect *clips,
822 struct drm_vmw_rect *vclips,
823 uint32_t num_clips,
824 int increment,
825 bool to_surface,
826 bool interruptible)
827 {
828 struct vmw_dma_buffer *buf =
829 container_of(vfb, struct vmw_framebuffer_dmabuf, base)->buffer;
830 struct vmw_stdu_dirty ddirty;
831 int ret;
832
833 ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, interruptible,
834 false);
835 if (ret)
836 return ret;
837
838 ddirty.transfer = (to_surface) ? SVGA3D_WRITE_HOST_VRAM :
839 SVGA3D_READ_HOST_VRAM;
840 ddirty.left = ddirty.top = S32_MAX;
841 ddirty.right = ddirty.bottom = S32_MIN;
842 ddirty.pitch = vfb->base.pitches[0];
843 ddirty.buf = buf;
844 ddirty.base.fifo_commit = vmw_stdu_dmabuf_fifo_commit;
845 ddirty.base.clip = vmw_stdu_dmabuf_clip;
846 ddirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_dma) +
847 num_clips * sizeof(SVGA3dCopyBox) +
848 sizeof(SVGA3dCmdSurfaceDMASuffix);
849 if (to_surface)
850 ddirty.base.fifo_reserve_size += sizeof(struct vmw_stdu_update);
851
852 ret = vmw_kms_helper_dirty(dev_priv, vfb, clips, vclips,
853 0, 0, num_clips, increment, &ddirty.base);
854 vmw_kms_helper_buffer_finish(dev_priv, file_priv, buf, NULL,
855 user_fence_rep);
856
857 return ret;
858 }
859
860 /**
861 * vmw_stdu_surface_clip - Callback to encode a surface copy command cliprect
862 *
863 * @dirty: The closure structure.
864 *
865 * Encodes a surface copy command cliprect and updates the bounding box
866 * for the copy.
867 */
868 static void vmw_kms_stdu_surface_clip(struct vmw_kms_dirty *dirty)
869 {
870 struct vmw_stdu_dirty *sdirty =
871 container_of(dirty, struct vmw_stdu_dirty, base);
872 struct vmw_stdu_surface_copy *cmd = dirty->cmd;
873 struct vmw_screen_target_display_unit *stdu =
874 container_of(dirty->unit, typeof(*stdu), base);
875
876 if (sdirty->sid != stdu->display_srf->res.id) {
877 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
878
879 blit += dirty->num_hits;
880 blit->srcx = dirty->fb_x;
881 blit->srcy = dirty->fb_y;
882 blit->x = dirty->unit_x1;
883 blit->y = dirty->unit_y1;
884 blit->d = 1;
885 blit->w = dirty->unit_x2 - dirty->unit_x1;
886 blit->h = dirty->unit_y2 - dirty->unit_y1;
887 }
888
889 dirty->num_hits++;
890
891 /* Destination bounding box */
892 sdirty->left = min_t(s32, sdirty->left, dirty->unit_x1);
893 sdirty->top = min_t(s32, sdirty->top, dirty->unit_y1);
894 sdirty->right = max_t(s32, sdirty->right, dirty->unit_x2);
895 sdirty->bottom = max_t(s32, sdirty->bottom, dirty->unit_y2);
896 }
897
898 /**
899 * vmw_stdu_surface_fifo_commit - Callback to fill in and submit a surface
900 * copy command.
901 *
902 * @dirty: The closure structure.
903 *
904 * Fills in the missing fields in a surface copy command, and encodes a screen
905 * target update command.
906 */
907 static void vmw_kms_stdu_surface_fifo_commit(struct vmw_kms_dirty *dirty)
908 {
909 struct vmw_stdu_dirty *sdirty =
910 container_of(dirty, struct vmw_stdu_dirty, base);
911 struct vmw_screen_target_display_unit *stdu =
912 container_of(dirty->unit, typeof(*stdu), base);
913 struct vmw_stdu_surface_copy *cmd = dirty->cmd;
914 struct vmw_stdu_update *update;
915 size_t blit_size = sizeof(SVGA3dCopyBox) * dirty->num_hits;
916 size_t commit_size;
917
918 if (!dirty->num_hits) {
919 vmw_fifo_commit(dirty->dev_priv, 0);
920 return;
921 }
922
923 if (sdirty->sid != stdu->display_srf->res.id) {
924 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
925
926 cmd->header.id = SVGA_3D_CMD_SURFACE_COPY;
927 cmd->header.size = sizeof(cmd->body) + blit_size;
928 cmd->body.src.sid = sdirty->sid;
929 cmd->body.dest.sid = stdu->display_srf->res.id;
930 update = (struct vmw_stdu_update *) &blit[dirty->num_hits];
931 commit_size = sizeof(*cmd) + blit_size + sizeof(*update);
932 } else {
933 update = dirty->cmd;
934 commit_size = sizeof(*update);
935 }
936
937 vmw_stdu_populate_update(update, stdu->base.unit, sdirty->left,
938 sdirty->right, sdirty->top, sdirty->bottom);
939
940 vmw_fifo_commit(dirty->dev_priv, commit_size);
941
942 sdirty->left = sdirty->top = S32_MAX;
943 sdirty->right = sdirty->bottom = S32_MIN;
944 }
945
946 /**
947 * vmw_kms_stdu_surface_dirty - Dirty part of a surface backed framebuffer
948 *
949 * @dev_priv: Pointer to the device private structure.
950 * @framebuffer: Pointer to the surface-buffer backed framebuffer.
951 * @clips: Array of clip rects. Either @clips or @vclips must be NULL.
952 * @vclips: Alternate array of clip rects. Either @clips or @vclips must
953 * be NULL.
954 * @srf: Pointer to surface to blit from. If NULL, the surface attached
955 * to @framebuffer will be used.
956 * @dest_x: X coordinate offset to align @srf with framebuffer coordinates.
957 * @dest_y: Y coordinate offset to align @srf with framebuffer coordinates.
958 * @num_clips: Number of clip rects in @clips.
959 * @inc: Increment to use when looping over @clips.
960 * @out_fence: If non-NULL, will return a ref-counted pointer to a
961 * struct vmw_fence_obj. The returned fence pointer may be NULL in which
962 * case the device has already synchronized.
963 *
964 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
965 * interrupted.
966 */
967 int vmw_kms_stdu_surface_dirty(struct vmw_private *dev_priv,
968 struct vmw_framebuffer *framebuffer,
969 struct drm_clip_rect *clips,
970 struct drm_vmw_rect *vclips,
971 struct vmw_resource *srf,
972 s32 dest_x,
973 s32 dest_y,
974 unsigned num_clips, int inc,
975 struct vmw_fence_obj **out_fence)
976 {
977 struct vmw_framebuffer_surface *vfbs =
978 container_of(framebuffer, typeof(*vfbs), base);
979 struct vmw_stdu_dirty sdirty;
980 int ret;
981
982 if (!srf)
983 srf = &vfbs->surface->res;
984
985 ret = vmw_kms_helper_resource_prepare(srf, true);
986 if (ret)
987 return ret;
988
989 if (vfbs->is_dmabuf_proxy) {
990 ret = vmw_kms_update_proxy(srf, clips, num_clips, inc);
991 if (ret)
992 goto out_finish;
993 }
994
995 sdirty.base.fifo_commit = vmw_kms_stdu_surface_fifo_commit;
996 sdirty.base.clip = vmw_kms_stdu_surface_clip;
997 sdirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_surface_copy) +
998 sizeof(SVGA3dCopyBox) * num_clips +
999 sizeof(struct vmw_stdu_update);
1000 sdirty.sid = srf->id;
1001 sdirty.left = sdirty.top = S32_MAX;
1002 sdirty.right = sdirty.bottom = S32_MIN;
1003
1004 ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
1005 dest_x, dest_y, num_clips, inc,
1006 &sdirty.base);
1007 out_finish:
1008 vmw_kms_helper_resource_finish(srf, out_fence);
1009
1010 return ret;
1011 }
1012
1013
1014 /*
1015 * Screen Target CRTC dispatch table
1016 */
1017 static const struct drm_crtc_funcs vmw_stdu_crtc_funcs = {
1018 .cursor_set2 = vmw_du_crtc_cursor_set2,
1019 .cursor_move = vmw_du_crtc_cursor_move,
1020 .gamma_set = vmw_du_crtc_gamma_set,
1021 .destroy = vmw_stdu_crtc_destroy,
1022 .set_config = vmw_stdu_crtc_set_config,
1023 .page_flip = vmw_stdu_crtc_page_flip,
1024 };
1025
1026
1027
1028 /******************************************************************************
1029 * Screen Target Display Unit Encoder Functions
1030 *****************************************************************************/
1031
1032 /**
1033 * vmw_stdu_encoder_destroy - cleans up the STDU
1034 *
1035 * @encoder: used the get the containing STDU
1036 *
1037 * vmwgfx cleans up crtc/encoder/connector all at the same time so technically
1038 * this can be a no-op. Nevertheless, it doesn't hurt of have this in case
1039 * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't
1040 * get called.
1041 */
1042 static void vmw_stdu_encoder_destroy(struct drm_encoder *encoder)
1043 {
1044 vmw_stdu_destroy(vmw_encoder_to_stdu(encoder));
1045 }
1046
1047 static const struct drm_encoder_funcs vmw_stdu_encoder_funcs = {
1048 .destroy = vmw_stdu_encoder_destroy,
1049 };
1050
1051
1052
1053 /******************************************************************************
1054 * Screen Target Display Unit Connector Functions
1055 *****************************************************************************/
1056
1057 /**
1058 * vmw_stdu_connector_destroy - cleans up the STDU
1059 *
1060 * @connector: used to get the containing STDU
1061 *
1062 * vmwgfx cleans up crtc/encoder/connector all at the same time so technically
1063 * this can be a no-op. Nevertheless, it doesn't hurt of have this in case
1064 * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't
1065 * get called.
1066 */
1067 static void vmw_stdu_connector_destroy(struct drm_connector *connector)
1068 {
1069 vmw_stdu_destroy(vmw_connector_to_stdu(connector));
1070 }
1071
1072
1073
1074 static const struct drm_connector_funcs vmw_stdu_connector_funcs = {
1075 .dpms = vmw_du_connector_dpms,
1076 .detect = vmw_du_connector_detect,
1077 .fill_modes = vmw_du_connector_fill_modes,
1078 .set_property = vmw_du_connector_set_property,
1079 .destroy = vmw_stdu_connector_destroy,
1080 };
1081
1082
1083
1084 /**
1085 * vmw_stdu_init - Sets up a Screen Target Display Unit
1086 *
1087 * @dev_priv: VMW DRM device
1088 * @unit: unit number range from 0 to VMWGFX_NUM_DISPLAY_UNITS
1089 *
1090 * This function is called once per CRTC, and allocates one Screen Target
1091 * display unit to represent that CRTC. Since the SVGA device does not separate
1092 * out encoder and connector, they are represented as part of the STDU as well.
1093 */
1094 static int vmw_stdu_init(struct vmw_private *dev_priv, unsigned unit)
1095 {
1096 struct vmw_screen_target_display_unit *stdu;
1097 struct drm_device *dev = dev_priv->dev;
1098 struct drm_connector *connector;
1099 struct drm_encoder *encoder;
1100 struct drm_crtc *crtc;
1101
1102
1103 stdu = kzalloc(sizeof(*stdu), GFP_KERNEL);
1104 if (!stdu)
1105 return -ENOMEM;
1106
1107 stdu->base.unit = unit;
1108 crtc = &stdu->base.crtc;
1109 encoder = &stdu->base.encoder;
1110 connector = &stdu->base.connector;
1111
1112 stdu->base.pref_active = (unit == 0);
1113 stdu->base.pref_width = dev_priv->initial_width;
1114 stdu->base.pref_height = dev_priv->initial_height;
1115 stdu->base.is_implicit = false;
1116
1117 drm_connector_init(dev, connector, &vmw_stdu_connector_funcs,
1118 DRM_MODE_CONNECTOR_VIRTUAL);
1119 connector->status = vmw_du_connector_detect(connector, false);
1120
1121 drm_encoder_init(dev, encoder, &vmw_stdu_encoder_funcs,
1122 DRM_MODE_ENCODER_VIRTUAL, NULL);
1123 drm_mode_connector_attach_encoder(connector, encoder);
1124 encoder->possible_crtcs = (1 << unit);
1125 encoder->possible_clones = 0;
1126
1127 (void) drm_connector_register(connector);
1128
1129 drm_crtc_init(dev, crtc, &vmw_stdu_crtc_funcs);
1130
1131 drm_mode_crtc_set_gamma_size(crtc, 256);
1132
1133 drm_object_attach_property(&connector->base,
1134 dev->mode_config.dirty_info_property,
1135 1);
1136 drm_object_attach_property(&connector->base,
1137 dev_priv->hotplug_mode_update_property, 1);
1138 drm_object_attach_property(&connector->base,
1139 dev->mode_config.suggested_x_property, 0);
1140 drm_object_attach_property(&connector->base,
1141 dev->mode_config.suggested_y_property, 0);
1142 if (dev_priv->implicit_placement_property)
1143 drm_object_attach_property
1144 (&connector->base,
1145 dev_priv->implicit_placement_property,
1146 stdu->base.is_implicit);
1147 return 0;
1148 }
1149
1150
1151
1152 /**
1153 * vmw_stdu_destroy - Cleans up a vmw_screen_target_display_unit
1154 *
1155 * @stdu: Screen Target Display Unit to be destroyed
1156 *
1157 * Clean up after vmw_stdu_init
1158 */
1159 static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu)
1160 {
1161 vmw_stdu_unpin_display(stdu);
1162
1163 vmw_du_cleanup(&stdu->base);
1164 kfree(stdu);
1165 }
1166
1167
1168
1169 /******************************************************************************
1170 * Screen Target Display KMS Functions
1171 *
1172 * These functions are called by the common KMS code in vmwgfx_kms.c
1173 *****************************************************************************/
1174
1175 /**
1176 * vmw_kms_stdu_init_display - Initializes a Screen Target based display
1177 *
1178 * @dev_priv: VMW DRM device
1179 *
1180 * This function initialize a Screen Target based display device. It checks
1181 * the capability bits to make sure the underlying hardware can support
1182 * screen targets, and then creates the maximum number of CRTCs, a.k.a Display
1183 * Units, as supported by the display hardware.
1184 *
1185 * RETURNS:
1186 * 0 on success, error code otherwise
1187 */
1188 int vmw_kms_stdu_init_display(struct vmw_private *dev_priv)
1189 {
1190 struct drm_device *dev = dev_priv->dev;
1191 int i, ret;
1192
1193
1194 /* Do nothing if Screen Target support is turned off */
1195 if (!VMWGFX_ENABLE_SCREEN_TARGET_OTABLE)
1196 return -ENOSYS;
1197
1198 if (!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS))
1199 return -ENOSYS;
1200
1201 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
1202 if (unlikely(ret != 0))
1203 return ret;
1204
1205 ret = drm_mode_create_dirty_info_property(dev);
1206 if (unlikely(ret != 0))
1207 goto err_vblank_cleanup;
1208
1209 dev_priv->active_display_unit = vmw_du_screen_target;
1210
1211 vmw_kms_create_implicit_placement_property(dev_priv, false);
1212
1213 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) {
1214 ret = vmw_stdu_init(dev_priv, i);
1215
1216 if (unlikely(ret != 0)) {
1217 DRM_ERROR("Failed to initialize STDU %d", i);
1218 goto err_vblank_cleanup;
1219 }
1220 }
1221
1222 DRM_INFO("Screen Target Display device initialized\n");
1223
1224 return 0;
1225
1226 err_vblank_cleanup:
1227 drm_vblank_cleanup(dev);
1228 return ret;
1229 }
1230
1231
1232
1233 /**
1234 * vmw_kms_stdu_close_display - Cleans up after vmw_kms_stdu_init_display
1235 *
1236 * @dev_priv: VMW DRM device
1237 *
1238 * Frees up any resources allocated by vmw_kms_stdu_init_display
1239 *
1240 * RETURNS:
1241 * 0 on success
1242 */
1243 int vmw_kms_stdu_close_display(struct vmw_private *dev_priv)
1244 {
1245 struct drm_device *dev = dev_priv->dev;
1246
1247 drm_vblank_cleanup(dev);
1248
1249 return 0;
1250 }
This page took 0.059012 seconds and 5 git commands to generate.