1 // SPDX-License-Identifier: GPL-2.0 OR MIT
2 /**************************************************************************
3  *
4  * Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA
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 <drm/drm_atomic.h>
29 #include <drm/drm_atomic_helper.h>
30 #include <drm/drm_damage_helper.h>
31 #include <drm/drm_fourcc.h>
32 #include <drm/drm_plane_helper.h>
33 #include <drm/drm_rect.h>
34 #include <drm/drm_sysfs.h>
35 #include <drm/drm_vblank.h>
36 
37 #include "vmwgfx_kms.h"
38 
39 void vmw_du_cleanup(struct vmw_display_unit *du)
40 {
41 	struct vmw_private *dev_priv = vmw_priv(du->primary.dev);
42 	drm_plane_cleanup(&du->primary);
43 	if (vmw_cmd_supported(dev_priv))
44 		drm_plane_cleanup(&du->cursor);
45 
46 	drm_connector_unregister(&du->connector);
47 	drm_crtc_cleanup(&du->crtc);
48 	drm_encoder_cleanup(&du->encoder);
49 	drm_connector_cleanup(&du->connector);
50 }
51 
52 /*
53  * Display Unit Cursor functions
54  */
55 
56 static int vmw_cursor_update_image(struct vmw_private *dev_priv,
57 				   u32 *image, u32 width, u32 height,
58 				   u32 hotspotX, u32 hotspotY)
59 {
60 	struct {
61 		u32 cmd;
62 		SVGAFifoCmdDefineAlphaCursor cursor;
63 	} *cmd;
64 	u32 image_size = width * height * 4;
65 	u32 cmd_size = sizeof(*cmd) + image_size;
66 
67 	if (!image)
68 		return -EINVAL;
69 
70 	cmd = VMW_CMD_RESERVE(dev_priv, cmd_size);
71 	if (unlikely(cmd == NULL))
72 		return -ENOMEM;
73 
74 	memset(cmd, 0, sizeof(*cmd));
75 
76 	memcpy(&cmd[1], image, image_size);
77 
78 	cmd->cmd = SVGA_CMD_DEFINE_ALPHA_CURSOR;
79 	cmd->cursor.id = 0;
80 	cmd->cursor.width = width;
81 	cmd->cursor.height = height;
82 	cmd->cursor.hotspotX = hotspotX;
83 	cmd->cursor.hotspotY = hotspotY;
84 
85 	vmw_cmd_commit_flush(dev_priv, cmd_size);
86 
87 	return 0;
88 }
89 
90 static int vmw_cursor_update_bo(struct vmw_private *dev_priv,
91 				struct vmw_buffer_object *bo,
92 				u32 width, u32 height,
93 				u32 hotspotX, u32 hotspotY)
94 {
95 	struct ttm_bo_kmap_obj map;
96 	unsigned long kmap_offset;
97 	unsigned long kmap_num;
98 	void *virtual;
99 	bool dummy;
100 	int ret;
101 
102 	kmap_offset = 0;
103 	kmap_num = PFN_UP(width*height*4);
104 
105 	ret = ttm_bo_reserve(&bo->base, true, false, NULL);
106 	if (unlikely(ret != 0)) {
107 		DRM_ERROR("reserve failed\n");
108 		return -EINVAL;
109 	}
110 
111 	ret = ttm_bo_kmap(&bo->base, kmap_offset, kmap_num, &map);
112 	if (unlikely(ret != 0))
113 		goto err_unreserve;
114 
115 	virtual = ttm_kmap_obj_virtual(&map, &dummy);
116 	ret = vmw_cursor_update_image(dev_priv, virtual, width, height,
117 				      hotspotX, hotspotY);
118 
119 	ttm_bo_kunmap(&map);
120 err_unreserve:
121 	ttm_bo_unreserve(&bo->base);
122 
123 	return ret;
124 }
125 
126 
127 static void vmw_cursor_update_position(struct vmw_private *dev_priv,
128 				       bool show, int x, int y)
129 {
130 	uint32_t count;
131 
132 	spin_lock(&dev_priv->cursor_lock);
133 	if (vmw_is_cursor_bypass3_enabled(dev_priv)) {
134 		vmw_fifo_mem_write(dev_priv, SVGA_FIFO_CURSOR_ON, show ? 1 : 0);
135 		vmw_fifo_mem_write(dev_priv, SVGA_FIFO_CURSOR_X, x);
136 		vmw_fifo_mem_write(dev_priv, SVGA_FIFO_CURSOR_Y, y);
137 		count = vmw_fifo_mem_read(dev_priv, SVGA_FIFO_CURSOR_COUNT);
138 		vmw_fifo_mem_write(dev_priv, SVGA_FIFO_CURSOR_COUNT, ++count);
139 	} else {
140 		vmw_write(dev_priv, SVGA_REG_CURSOR_X, x);
141 		vmw_write(dev_priv, SVGA_REG_CURSOR_Y, y);
142 		vmw_write(dev_priv, SVGA_REG_CURSOR_ON, show ? 1 : 0);
143 	}
144 	spin_unlock(&dev_priv->cursor_lock);
145 }
146 
147 
148 void vmw_kms_cursor_snoop(struct vmw_surface *srf,
149 			  struct ttm_object_file *tfile,
150 			  struct ttm_buffer_object *bo,
151 			  SVGA3dCmdHeader *header)
152 {
153 	struct ttm_bo_kmap_obj map;
154 	unsigned long kmap_offset;
155 	unsigned long kmap_num;
156 	SVGA3dCopyBox *box;
157 	unsigned box_count;
158 	void *virtual;
159 	bool dummy;
160 	struct vmw_dma_cmd {
161 		SVGA3dCmdHeader header;
162 		SVGA3dCmdSurfaceDMA dma;
163 	} *cmd;
164 	int i, ret;
165 
166 	cmd = container_of(header, struct vmw_dma_cmd, header);
167 
168 	/* No snooper installed */
169 	if (!srf->snooper.image)
170 		return;
171 
172 	if (cmd->dma.host.face != 0 || cmd->dma.host.mipmap != 0) {
173 		DRM_ERROR("face and mipmap for cursors should never != 0\n");
174 		return;
175 	}
176 
177 	if (cmd->header.size < 64) {
178 		DRM_ERROR("at least one full copy box must be given\n");
179 		return;
180 	}
181 
182 	box = (SVGA3dCopyBox *)&cmd[1];
183 	box_count = (cmd->header.size - sizeof(SVGA3dCmdSurfaceDMA)) /
184 			sizeof(SVGA3dCopyBox);
185 
186 	if (cmd->dma.guest.ptr.offset % PAGE_SIZE ||
187 	    box->x != 0    || box->y != 0    || box->z != 0    ||
188 	    box->srcx != 0 || box->srcy != 0 || box->srcz != 0 ||
189 	    box->d != 1    || box_count != 1) {
190 		/* TODO handle none page aligned offsets */
191 		/* TODO handle more dst & src != 0 */
192 		/* TODO handle more then one copy */
193 		DRM_ERROR("Can't snoop dma request for cursor!\n");
194 		DRM_ERROR("(%u, %u, %u) (%u, %u, %u) (%ux%ux%u) %u %u\n",
195 			  box->srcx, box->srcy, box->srcz,
196 			  box->x, box->y, box->z,
197 			  box->w, box->h, box->d, box_count,
198 			  cmd->dma.guest.ptr.offset);
199 		return;
200 	}
201 
202 	kmap_offset = cmd->dma.guest.ptr.offset >> PAGE_SHIFT;
203 	kmap_num = (64*64*4) >> PAGE_SHIFT;
204 
205 	ret = ttm_bo_reserve(bo, true, false, NULL);
206 	if (unlikely(ret != 0)) {
207 		DRM_ERROR("reserve failed\n");
208 		return;
209 	}
210 
211 	ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
212 	if (unlikely(ret != 0))
213 		goto err_unreserve;
214 
215 	virtual = ttm_kmap_obj_virtual(&map, &dummy);
216 
217 	if (box->w == 64 && cmd->dma.guest.pitch == 64*4) {
218 		memcpy(srf->snooper.image, virtual, 64*64*4);
219 	} else {
220 		/* Image is unsigned pointer. */
221 		for (i = 0; i < box->h; i++)
222 			memcpy(srf->snooper.image + i * 64,
223 			       virtual + i * cmd->dma.guest.pitch,
224 			       box->w * 4);
225 	}
226 
227 	srf->snooper.age++;
228 
229 	ttm_bo_kunmap(&map);
230 err_unreserve:
231 	ttm_bo_unreserve(bo);
232 }
233 
234 /**
235  * vmw_kms_legacy_hotspot_clear - Clear legacy hotspots
236  *
237  * @dev_priv: Pointer to the device private struct.
238  *
239  * Clears all legacy hotspots.
240  */
241 void vmw_kms_legacy_hotspot_clear(struct vmw_private *dev_priv)
242 {
243 	struct drm_device *dev = &dev_priv->drm;
244 	struct vmw_display_unit *du;
245 	struct drm_crtc *crtc;
246 
247 	drm_modeset_lock_all(dev);
248 	drm_for_each_crtc(crtc, dev) {
249 		du = vmw_crtc_to_du(crtc);
250 
251 		du->hotspot_x = 0;
252 		du->hotspot_y = 0;
253 	}
254 	drm_modeset_unlock_all(dev);
255 }
256 
257 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
258 {
259 	struct drm_device *dev = &dev_priv->drm;
260 	struct vmw_display_unit *du;
261 	struct drm_crtc *crtc;
262 
263 	mutex_lock(&dev->mode_config.mutex);
264 
265 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
266 		du = vmw_crtc_to_du(crtc);
267 		if (!du->cursor_surface ||
268 		    du->cursor_age == du->cursor_surface->snooper.age)
269 			continue;
270 
271 		du->cursor_age = du->cursor_surface->snooper.age;
272 		vmw_cursor_update_image(dev_priv,
273 					du->cursor_surface->snooper.image,
274 					64, 64,
275 					du->hotspot_x + du->core_hotspot_x,
276 					du->hotspot_y + du->core_hotspot_y);
277 	}
278 
279 	mutex_unlock(&dev->mode_config.mutex);
280 }
281 
282 
283 void vmw_du_cursor_plane_destroy(struct drm_plane *plane)
284 {
285 	vmw_cursor_update_position(plane->dev->dev_private, false, 0, 0);
286 
287 	drm_plane_cleanup(plane);
288 }
289 
290 
291 void vmw_du_primary_plane_destroy(struct drm_plane *plane)
292 {
293 	drm_plane_cleanup(plane);
294 
295 	/* Planes are static in our case so we don't free it */
296 }
297 
298 
299 /**
300  * vmw_du_plane_unpin_surf - unpins resource associated with a framebuffer surface
301  *
302  * @vps: plane state associated with the display surface
303  * @unreference: true if we also want to unreference the display.
304  */
305 void vmw_du_plane_unpin_surf(struct vmw_plane_state *vps,
306 			     bool unreference)
307 {
308 	if (vps->surf) {
309 		if (vps->pinned) {
310 			vmw_resource_unpin(&vps->surf->res);
311 			vps->pinned--;
312 		}
313 
314 		if (unreference) {
315 			if (vps->pinned)
316 				DRM_ERROR("Surface still pinned\n");
317 			vmw_surface_unreference(&vps->surf);
318 		}
319 	}
320 }
321 
322 
323 /**
324  * vmw_du_plane_cleanup_fb - Unpins the cursor
325  *
326  * @plane:  display plane
327  * @old_state: Contains the FB to clean up
328  *
329  * Unpins the framebuffer surface
330  *
331  * Returns 0 on success
332  */
333 void
334 vmw_du_plane_cleanup_fb(struct drm_plane *plane,
335 			struct drm_plane_state *old_state)
336 {
337 	struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
338 
339 	vmw_du_plane_unpin_surf(vps, false);
340 }
341 
342 
343 /**
344  * vmw_du_cursor_plane_prepare_fb - Readies the cursor by referencing it
345  *
346  * @plane:  display plane
347  * @new_state: info on the new plane state, including the FB
348  *
349  * Returns 0 on success
350  */
351 int
352 vmw_du_cursor_plane_prepare_fb(struct drm_plane *plane,
353 			       struct drm_plane_state *new_state)
354 {
355 	struct drm_framebuffer *fb = new_state->fb;
356 	struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
357 
358 
359 	if (vps->surf)
360 		vmw_surface_unreference(&vps->surf);
361 
362 	if (vps->bo)
363 		vmw_bo_unreference(&vps->bo);
364 
365 	if (fb) {
366 		if (vmw_framebuffer_to_vfb(fb)->bo) {
367 			vps->bo = vmw_framebuffer_to_vfbd(fb)->buffer;
368 			vmw_bo_reference(vps->bo);
369 		} else {
370 			vps->surf = vmw_framebuffer_to_vfbs(fb)->surface;
371 			vmw_surface_reference(vps->surf);
372 		}
373 	}
374 
375 	return 0;
376 }
377 
378 
379 void
380 vmw_du_cursor_plane_atomic_update(struct drm_plane *plane,
381 				  struct drm_atomic_state *state)
382 {
383 	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
384 									   plane);
385 	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
386 									   plane);
387 	struct drm_crtc *crtc = new_state->crtc ?: old_state->crtc;
388 	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
389 	struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
390 	struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
391 	s32 hotspot_x, hotspot_y;
392 	int ret = 0;
393 
394 
395 	hotspot_x = du->hotspot_x;
396 	hotspot_y = du->hotspot_y;
397 
398 	if (new_state->fb) {
399 		hotspot_x += new_state->fb->hot_x;
400 		hotspot_y += new_state->fb->hot_y;
401 	}
402 
403 	du->cursor_surface = vps->surf;
404 	du->cursor_bo = vps->bo;
405 
406 	if (vps->surf) {
407 		du->cursor_age = du->cursor_surface->snooper.age;
408 
409 		ret = vmw_cursor_update_image(dev_priv,
410 					      vps->surf->snooper.image,
411 					      64, 64, hotspot_x,
412 					      hotspot_y);
413 	} else if (vps->bo) {
414 		ret = vmw_cursor_update_bo(dev_priv, vps->bo,
415 					   new_state->crtc_w,
416 					   new_state->crtc_h,
417 					   hotspot_x, hotspot_y);
418 	} else {
419 		vmw_cursor_update_position(dev_priv, false, 0, 0);
420 		return;
421 	}
422 
423 	if (!ret) {
424 		du->cursor_x = new_state->crtc_x + du->set_gui_x;
425 		du->cursor_y = new_state->crtc_y + du->set_gui_y;
426 
427 		vmw_cursor_update_position(dev_priv, true,
428 					   du->cursor_x + hotspot_x,
429 					   du->cursor_y + hotspot_y);
430 
431 		du->core_hotspot_x = hotspot_x - du->hotspot_x;
432 		du->core_hotspot_y = hotspot_y - du->hotspot_y;
433 	} else {
434 		DRM_ERROR("Failed to update cursor image\n");
435 	}
436 }
437 
438 
439 /**
440  * vmw_du_primary_plane_atomic_check - check if the new state is okay
441  *
442  * @plane: display plane
443  * @state: info on the new plane state, including the FB
444  *
445  * Check if the new state is settable given the current state.  Other
446  * than what the atomic helper checks, we care about crtc fitting
447  * the FB and maintaining one active framebuffer.
448  *
449  * Returns 0 on success
450  */
451 int vmw_du_primary_plane_atomic_check(struct drm_plane *plane,
452 				      struct drm_atomic_state *state)
453 {
454 	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
455 									   plane);
456 	struct drm_crtc_state *crtc_state = NULL;
457 	struct drm_framebuffer *new_fb = new_state->fb;
458 	int ret;
459 
460 	if (new_state->crtc)
461 		crtc_state = drm_atomic_get_new_crtc_state(state,
462 							   new_state->crtc);
463 
464 	ret = drm_atomic_helper_check_plane_state(new_state, crtc_state,
465 						  DRM_PLANE_HELPER_NO_SCALING,
466 						  DRM_PLANE_HELPER_NO_SCALING,
467 						  false, true);
468 
469 	if (!ret && new_fb) {
470 		struct drm_crtc *crtc = new_state->crtc;
471 		struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
472 
473 		vmw_connector_state_to_vcs(du->connector.state);
474 	}
475 
476 
477 	return ret;
478 }
479 
480 
481 /**
482  * vmw_du_cursor_plane_atomic_check - check if the new state is okay
483  *
484  * @plane: cursor plane
485  * @state: info on the new plane state
486  *
487  * This is a chance to fail if the new cursor state does not fit
488  * our requirements.
489  *
490  * Returns 0 on success
491  */
492 int vmw_du_cursor_plane_atomic_check(struct drm_plane *plane,
493 				     struct drm_atomic_state *state)
494 {
495 	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
496 									   plane);
497 	int ret = 0;
498 	struct drm_crtc_state *crtc_state = NULL;
499 	struct vmw_surface *surface = NULL;
500 	struct drm_framebuffer *fb = new_state->fb;
501 
502 	if (new_state->crtc)
503 		crtc_state = drm_atomic_get_new_crtc_state(new_state->state,
504 							   new_state->crtc);
505 
506 	ret = drm_atomic_helper_check_plane_state(new_state, crtc_state,
507 						  DRM_PLANE_HELPER_NO_SCALING,
508 						  DRM_PLANE_HELPER_NO_SCALING,
509 						  true, true);
510 	if (ret)
511 		return ret;
512 
513 	/* Turning off */
514 	if (!fb)
515 		return 0;
516 
517 	/* A lot of the code assumes this */
518 	if (new_state->crtc_w != 64 || new_state->crtc_h != 64) {
519 		DRM_ERROR("Invalid cursor dimensions (%d, %d)\n",
520 			  new_state->crtc_w, new_state->crtc_h);
521 		ret = -EINVAL;
522 	}
523 
524 	if (!vmw_framebuffer_to_vfb(fb)->bo)
525 		surface = vmw_framebuffer_to_vfbs(fb)->surface;
526 
527 	if (surface && !surface->snooper.image) {
528 		DRM_ERROR("surface not suitable for cursor\n");
529 		ret = -EINVAL;
530 	}
531 
532 	return ret;
533 }
534 
535 
536 int vmw_du_crtc_atomic_check(struct drm_crtc *crtc,
537 			     struct drm_atomic_state *state)
538 {
539 	struct drm_crtc_state *new_state = drm_atomic_get_new_crtc_state(state,
540 									 crtc);
541 	struct vmw_display_unit *du = vmw_crtc_to_du(new_state->crtc);
542 	int connector_mask = drm_connector_mask(&du->connector);
543 	bool has_primary = new_state->plane_mask &
544 			   drm_plane_mask(crtc->primary);
545 
546 	/* We always want to have an active plane with an active CRTC */
547 	if (has_primary != new_state->enable)
548 		return -EINVAL;
549 
550 
551 	if (new_state->connector_mask != connector_mask &&
552 	    new_state->connector_mask != 0) {
553 		DRM_ERROR("Invalid connectors configuration\n");
554 		return -EINVAL;
555 	}
556 
557 	/*
558 	 * Our virtual device does not have a dot clock, so use the logical
559 	 * clock value as the dot clock.
560 	 */
561 	if (new_state->mode.crtc_clock == 0)
562 		new_state->adjusted_mode.crtc_clock = new_state->mode.clock;
563 
564 	return 0;
565 }
566 
567 
568 void vmw_du_crtc_atomic_begin(struct drm_crtc *crtc,
569 			      struct drm_atomic_state *state)
570 {
571 }
572 
573 
574 void vmw_du_crtc_atomic_flush(struct drm_crtc *crtc,
575 			      struct drm_atomic_state *state)
576 {
577 	struct drm_pending_vblank_event *event = crtc->state->event;
578 
579 	if (event) {
580 		crtc->state->event = NULL;
581 
582 		spin_lock_irq(&crtc->dev->event_lock);
583 		drm_crtc_send_vblank_event(crtc, event);
584 		spin_unlock_irq(&crtc->dev->event_lock);
585 	}
586 }
587 
588 
589 /**
590  * vmw_du_crtc_duplicate_state - duplicate crtc state
591  * @crtc: DRM crtc
592  *
593  * Allocates and returns a copy of the crtc state (both common and
594  * vmw-specific) for the specified crtc.
595  *
596  * Returns: The newly allocated crtc state, or NULL on failure.
597  */
598 struct drm_crtc_state *
599 vmw_du_crtc_duplicate_state(struct drm_crtc *crtc)
600 {
601 	struct drm_crtc_state *state;
602 	struct vmw_crtc_state *vcs;
603 
604 	if (WARN_ON(!crtc->state))
605 		return NULL;
606 
607 	vcs = kmemdup(crtc->state, sizeof(*vcs), GFP_KERNEL);
608 
609 	if (!vcs)
610 		return NULL;
611 
612 	state = &vcs->base;
613 
614 	__drm_atomic_helper_crtc_duplicate_state(crtc, state);
615 
616 	return state;
617 }
618 
619 
620 /**
621  * vmw_du_crtc_reset - creates a blank vmw crtc state
622  * @crtc: DRM crtc
623  *
624  * Resets the atomic state for @crtc by freeing the state pointer (which
625  * might be NULL, e.g. at driver load time) and allocating a new empty state
626  * object.
627  */
628 void vmw_du_crtc_reset(struct drm_crtc *crtc)
629 {
630 	struct vmw_crtc_state *vcs;
631 
632 
633 	if (crtc->state) {
634 		__drm_atomic_helper_crtc_destroy_state(crtc->state);
635 
636 		kfree(vmw_crtc_state_to_vcs(crtc->state));
637 	}
638 
639 	vcs = kzalloc(sizeof(*vcs), GFP_KERNEL);
640 
641 	if (!vcs) {
642 		DRM_ERROR("Cannot allocate vmw_crtc_state\n");
643 		return;
644 	}
645 
646 	__drm_atomic_helper_crtc_reset(crtc, &vcs->base);
647 }
648 
649 
650 /**
651  * vmw_du_crtc_destroy_state - destroy crtc state
652  * @crtc: DRM crtc
653  * @state: state object to destroy
654  *
655  * Destroys the crtc state (both common and vmw-specific) for the
656  * specified plane.
657  */
658 void
659 vmw_du_crtc_destroy_state(struct drm_crtc *crtc,
660 			  struct drm_crtc_state *state)
661 {
662 	drm_atomic_helper_crtc_destroy_state(crtc, state);
663 }
664 
665 
666 /**
667  * vmw_du_plane_duplicate_state - duplicate plane state
668  * @plane: drm plane
669  *
670  * Allocates and returns a copy of the plane state (both common and
671  * vmw-specific) for the specified plane.
672  *
673  * Returns: The newly allocated plane state, or NULL on failure.
674  */
675 struct drm_plane_state *
676 vmw_du_plane_duplicate_state(struct drm_plane *plane)
677 {
678 	struct drm_plane_state *state;
679 	struct vmw_plane_state *vps;
680 
681 	vps = kmemdup(plane->state, sizeof(*vps), GFP_KERNEL);
682 
683 	if (!vps)
684 		return NULL;
685 
686 	vps->pinned = 0;
687 	vps->cpp = 0;
688 
689 	/* Each ref counted resource needs to be acquired again */
690 	if (vps->surf)
691 		(void) vmw_surface_reference(vps->surf);
692 
693 	if (vps->bo)
694 		(void) vmw_bo_reference(vps->bo);
695 
696 	state = &vps->base;
697 
698 	__drm_atomic_helper_plane_duplicate_state(plane, state);
699 
700 	return state;
701 }
702 
703 
704 /**
705  * vmw_du_plane_reset - creates a blank vmw plane state
706  * @plane: drm plane
707  *
708  * Resets the atomic state for @plane by freeing the state pointer (which might
709  * be NULL, e.g. at driver load time) and allocating a new empty state object.
710  */
711 void vmw_du_plane_reset(struct drm_plane *plane)
712 {
713 	struct vmw_plane_state *vps;
714 
715 
716 	if (plane->state)
717 		vmw_du_plane_destroy_state(plane, plane->state);
718 
719 	vps = kzalloc(sizeof(*vps), GFP_KERNEL);
720 
721 	if (!vps) {
722 		DRM_ERROR("Cannot allocate vmw_plane_state\n");
723 		return;
724 	}
725 
726 	__drm_atomic_helper_plane_reset(plane, &vps->base);
727 }
728 
729 
730 /**
731  * vmw_du_plane_destroy_state - destroy plane state
732  * @plane: DRM plane
733  * @state: state object to destroy
734  *
735  * Destroys the plane state (both common and vmw-specific) for the
736  * specified plane.
737  */
738 void
739 vmw_du_plane_destroy_state(struct drm_plane *plane,
740 			   struct drm_plane_state *state)
741 {
742 	struct vmw_plane_state *vps = vmw_plane_state_to_vps(state);
743 
744 
745 	/* Should have been freed by cleanup_fb */
746 	if (vps->surf)
747 		vmw_surface_unreference(&vps->surf);
748 
749 	if (vps->bo)
750 		vmw_bo_unreference(&vps->bo);
751 
752 	drm_atomic_helper_plane_destroy_state(plane, state);
753 }
754 
755 
756 /**
757  * vmw_du_connector_duplicate_state - duplicate connector state
758  * @connector: DRM connector
759  *
760  * Allocates and returns a copy of the connector state (both common and
761  * vmw-specific) for the specified connector.
762  *
763  * Returns: The newly allocated connector state, or NULL on failure.
764  */
765 struct drm_connector_state *
766 vmw_du_connector_duplicate_state(struct drm_connector *connector)
767 {
768 	struct drm_connector_state *state;
769 	struct vmw_connector_state *vcs;
770 
771 	if (WARN_ON(!connector->state))
772 		return NULL;
773 
774 	vcs = kmemdup(connector->state, sizeof(*vcs), GFP_KERNEL);
775 
776 	if (!vcs)
777 		return NULL;
778 
779 	state = &vcs->base;
780 
781 	__drm_atomic_helper_connector_duplicate_state(connector, state);
782 
783 	return state;
784 }
785 
786 
787 /**
788  * vmw_du_connector_reset - creates a blank vmw connector state
789  * @connector: DRM connector
790  *
791  * Resets the atomic state for @connector by freeing the state pointer (which
792  * might be NULL, e.g. at driver load time) and allocating a new empty state
793  * object.
794  */
795 void vmw_du_connector_reset(struct drm_connector *connector)
796 {
797 	struct vmw_connector_state *vcs;
798 
799 
800 	if (connector->state) {
801 		__drm_atomic_helper_connector_destroy_state(connector->state);
802 
803 		kfree(vmw_connector_state_to_vcs(connector->state));
804 	}
805 
806 	vcs = kzalloc(sizeof(*vcs), GFP_KERNEL);
807 
808 	if (!vcs) {
809 		DRM_ERROR("Cannot allocate vmw_connector_state\n");
810 		return;
811 	}
812 
813 	__drm_atomic_helper_connector_reset(connector, &vcs->base);
814 }
815 
816 
817 /**
818  * vmw_du_connector_destroy_state - destroy connector state
819  * @connector: DRM connector
820  * @state: state object to destroy
821  *
822  * Destroys the connector state (both common and vmw-specific) for the
823  * specified plane.
824  */
825 void
826 vmw_du_connector_destroy_state(struct drm_connector *connector,
827 			  struct drm_connector_state *state)
828 {
829 	drm_atomic_helper_connector_destroy_state(connector, state);
830 }
831 /*
832  * Generic framebuffer code
833  */
834 
835 /*
836  * Surface framebuffer code
837  */
838 
839 static void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
840 {
841 	struct vmw_framebuffer_surface *vfbs =
842 		vmw_framebuffer_to_vfbs(framebuffer);
843 
844 	drm_framebuffer_cleanup(framebuffer);
845 	vmw_surface_unreference(&vfbs->surface);
846 
847 	kfree(vfbs);
848 }
849 
850 /**
851  * vmw_kms_readback - Perform a readback from the screen system to
852  * a buffer-object backed framebuffer.
853  *
854  * @dev_priv: Pointer to the device private structure.
855  * @file_priv: Pointer to a struct drm_file identifying the caller.
856  * Must be set to NULL if @user_fence_rep is NULL.
857  * @vfb: Pointer to the buffer-object backed framebuffer.
858  * @user_fence_rep: User-space provided structure for fence information.
859  * Must be set to non-NULL if @file_priv is non-NULL.
860  * @vclips: Array of clip rects.
861  * @num_clips: Number of clip rects in @vclips.
862  *
863  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
864  * interrupted.
865  */
866 int vmw_kms_readback(struct vmw_private *dev_priv,
867 		     struct drm_file *file_priv,
868 		     struct vmw_framebuffer *vfb,
869 		     struct drm_vmw_fence_rep __user *user_fence_rep,
870 		     struct drm_vmw_rect *vclips,
871 		     uint32_t num_clips)
872 {
873 	switch (dev_priv->active_display_unit) {
874 	case vmw_du_screen_object:
875 		return vmw_kms_sou_readback(dev_priv, file_priv, vfb,
876 					    user_fence_rep, vclips, num_clips,
877 					    NULL);
878 	case vmw_du_screen_target:
879 		return vmw_kms_stdu_dma(dev_priv, file_priv, vfb,
880 					user_fence_rep, NULL, vclips, num_clips,
881 					1, false, true, NULL);
882 	default:
883 		WARN_ONCE(true,
884 			  "Readback called with invalid display system.\n");
885 }
886 
887 	return -ENOSYS;
888 }
889 
890 
891 static const struct drm_framebuffer_funcs vmw_framebuffer_surface_funcs = {
892 	.destroy = vmw_framebuffer_surface_destroy,
893 	.dirty = drm_atomic_helper_dirtyfb,
894 };
895 
896 static int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
897 					   struct vmw_surface *surface,
898 					   struct vmw_framebuffer **out,
899 					   const struct drm_mode_fb_cmd2
900 					   *mode_cmd,
901 					   bool is_bo_proxy)
902 
903 {
904 	struct drm_device *dev = &dev_priv->drm;
905 	struct vmw_framebuffer_surface *vfbs;
906 	enum SVGA3dSurfaceFormat format;
907 	int ret;
908 
909 	/* 3D is only supported on HWv8 and newer hosts */
910 	if (dev_priv->active_display_unit == vmw_du_legacy)
911 		return -ENOSYS;
912 
913 	/*
914 	 * Sanity checks.
915 	 */
916 
917 	/* Surface must be marked as a scanout. */
918 	if (unlikely(!surface->metadata.scanout))
919 		return -EINVAL;
920 
921 	if (unlikely(surface->metadata.mip_levels[0] != 1 ||
922 		     surface->metadata.num_sizes != 1 ||
923 		     surface->metadata.base_size.width < mode_cmd->width ||
924 		     surface->metadata.base_size.height < mode_cmd->height ||
925 		     surface->metadata.base_size.depth != 1)) {
926 		DRM_ERROR("Incompatible surface dimensions "
927 			  "for requested mode.\n");
928 		return -EINVAL;
929 	}
930 
931 	switch (mode_cmd->pixel_format) {
932 	case DRM_FORMAT_ARGB8888:
933 		format = SVGA3D_A8R8G8B8;
934 		break;
935 	case DRM_FORMAT_XRGB8888:
936 		format = SVGA3D_X8R8G8B8;
937 		break;
938 	case DRM_FORMAT_RGB565:
939 		format = SVGA3D_R5G6B5;
940 		break;
941 	case DRM_FORMAT_XRGB1555:
942 		format = SVGA3D_A1R5G5B5;
943 		break;
944 	default:
945 		DRM_ERROR("Invalid pixel format: %p4cc\n",
946 			  &mode_cmd->pixel_format);
947 		return -EINVAL;
948 	}
949 
950 	/*
951 	 * For DX, surface format validation is done when surface->scanout
952 	 * is set.
953 	 */
954 	if (!has_sm4_context(dev_priv) && format != surface->metadata.format) {
955 		DRM_ERROR("Invalid surface format for requested mode.\n");
956 		return -EINVAL;
957 	}
958 
959 	vfbs = kzalloc(sizeof(*vfbs), GFP_KERNEL);
960 	if (!vfbs) {
961 		ret = -ENOMEM;
962 		goto out_err1;
963 	}
964 
965 	drm_helper_mode_fill_fb_struct(dev, &vfbs->base.base, mode_cmd);
966 	vfbs->surface = vmw_surface_reference(surface);
967 	vfbs->base.user_handle = mode_cmd->handles[0];
968 	vfbs->is_bo_proxy = is_bo_proxy;
969 
970 	*out = &vfbs->base;
971 
972 	ret = drm_framebuffer_init(dev, &vfbs->base.base,
973 				   &vmw_framebuffer_surface_funcs);
974 	if (ret)
975 		goto out_err2;
976 
977 	return 0;
978 
979 out_err2:
980 	vmw_surface_unreference(&surface);
981 	kfree(vfbs);
982 out_err1:
983 	return ret;
984 }
985 
986 /*
987  * Buffer-object framebuffer code
988  */
989 
990 static int vmw_framebuffer_bo_create_handle(struct drm_framebuffer *fb,
991 					    struct drm_file *file_priv,
992 					    unsigned int *handle)
993 {
994 	struct vmw_framebuffer_bo *vfbd =
995 			vmw_framebuffer_to_vfbd(fb);
996 
997 	return drm_gem_handle_create(file_priv, &vfbd->buffer->base.base, handle);
998 }
999 
1000 static void vmw_framebuffer_bo_destroy(struct drm_framebuffer *framebuffer)
1001 {
1002 	struct vmw_framebuffer_bo *vfbd =
1003 		vmw_framebuffer_to_vfbd(framebuffer);
1004 
1005 	drm_framebuffer_cleanup(framebuffer);
1006 	vmw_bo_unreference(&vfbd->buffer);
1007 
1008 	kfree(vfbd);
1009 }
1010 
1011 static int vmw_framebuffer_bo_dirty(struct drm_framebuffer *framebuffer,
1012 				    struct drm_file *file_priv,
1013 				    unsigned int flags, unsigned int color,
1014 				    struct drm_clip_rect *clips,
1015 				    unsigned int num_clips)
1016 {
1017 	struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
1018 	struct vmw_framebuffer_bo *vfbd =
1019 		vmw_framebuffer_to_vfbd(framebuffer);
1020 	struct drm_clip_rect norect;
1021 	int ret, increment = 1;
1022 
1023 	drm_modeset_lock_all(&dev_priv->drm);
1024 
1025 	if (!num_clips) {
1026 		num_clips = 1;
1027 		clips = &norect;
1028 		norect.x1 = norect.y1 = 0;
1029 		norect.x2 = framebuffer->width;
1030 		norect.y2 = framebuffer->height;
1031 	} else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
1032 		num_clips /= 2;
1033 		increment = 2;
1034 	}
1035 
1036 	switch (dev_priv->active_display_unit) {
1037 	case vmw_du_legacy:
1038 		ret = vmw_kms_ldu_do_bo_dirty(dev_priv, &vfbd->base, 0, 0,
1039 					      clips, num_clips, increment);
1040 		break;
1041 	default:
1042 		ret = -EINVAL;
1043 		WARN_ONCE(true, "Dirty called with invalid display system.\n");
1044 		break;
1045 	}
1046 
1047 	vmw_cmd_flush(dev_priv, false);
1048 
1049 	drm_modeset_unlock_all(&dev_priv->drm);
1050 
1051 	return ret;
1052 }
1053 
1054 static int vmw_framebuffer_bo_dirty_ext(struct drm_framebuffer *framebuffer,
1055 					struct drm_file *file_priv,
1056 					unsigned int flags, unsigned int color,
1057 					struct drm_clip_rect *clips,
1058 					unsigned int num_clips)
1059 {
1060 	struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
1061 
1062 	if (dev_priv->active_display_unit == vmw_du_legacy &&
1063 	    vmw_cmd_supported(dev_priv))
1064 		return vmw_framebuffer_bo_dirty(framebuffer, file_priv, flags,
1065 						color, clips, num_clips);
1066 
1067 	return drm_atomic_helper_dirtyfb(framebuffer, file_priv, flags, color,
1068 					 clips, num_clips);
1069 }
1070 
1071 static const struct drm_framebuffer_funcs vmw_framebuffer_bo_funcs = {
1072 	.create_handle = vmw_framebuffer_bo_create_handle,
1073 	.destroy = vmw_framebuffer_bo_destroy,
1074 	.dirty = vmw_framebuffer_bo_dirty_ext,
1075 };
1076 
1077 /*
1078  * Pin the bofer in a location suitable for access by the
1079  * display system.
1080  */
1081 static int vmw_framebuffer_pin(struct vmw_framebuffer *vfb)
1082 {
1083 	struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
1084 	struct vmw_buffer_object *buf;
1085 	struct ttm_placement *placement;
1086 	int ret;
1087 
1088 	buf = vfb->bo ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
1089 		vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
1090 
1091 	if (!buf)
1092 		return 0;
1093 
1094 	switch (dev_priv->active_display_unit) {
1095 	case vmw_du_legacy:
1096 		vmw_overlay_pause_all(dev_priv);
1097 		ret = vmw_bo_pin_in_start_of_vram(dev_priv, buf, false);
1098 		vmw_overlay_resume_all(dev_priv);
1099 		break;
1100 	case vmw_du_screen_object:
1101 	case vmw_du_screen_target:
1102 		if (vfb->bo) {
1103 			if (dev_priv->capabilities & SVGA_CAP_3D) {
1104 				/*
1105 				 * Use surface DMA to get content to
1106 				 * sreen target surface.
1107 				 */
1108 				placement = &vmw_vram_gmr_placement;
1109 			} else {
1110 				/* Use CPU blit. */
1111 				placement = &vmw_sys_placement;
1112 			}
1113 		} else {
1114 			/* Use surface / image update */
1115 			placement = &vmw_mob_placement;
1116 		}
1117 
1118 		return vmw_bo_pin_in_placement(dev_priv, buf, placement, false);
1119 	default:
1120 		return -EINVAL;
1121 	}
1122 
1123 	return ret;
1124 }
1125 
1126 static int vmw_framebuffer_unpin(struct vmw_framebuffer *vfb)
1127 {
1128 	struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
1129 	struct vmw_buffer_object *buf;
1130 
1131 	buf = vfb->bo ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
1132 		vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
1133 
1134 	if (WARN_ON(!buf))
1135 		return 0;
1136 
1137 	return vmw_bo_unpin(dev_priv, buf, false);
1138 }
1139 
1140 /**
1141  * vmw_create_bo_proxy - create a proxy surface for the buffer object
1142  *
1143  * @dev: DRM device
1144  * @mode_cmd: parameters for the new surface
1145  * @bo_mob: MOB backing the buffer object
1146  * @srf_out: newly created surface
1147  *
1148  * When the content FB is a buffer object, we create a surface as a proxy to the
1149  * same buffer.  This way we can do a surface copy rather than a surface DMA.
1150  * This is a more efficient approach
1151  *
1152  * RETURNS:
1153  * 0 on success, error code otherwise
1154  */
1155 static int vmw_create_bo_proxy(struct drm_device *dev,
1156 			       const struct drm_mode_fb_cmd2 *mode_cmd,
1157 			       struct vmw_buffer_object *bo_mob,
1158 			       struct vmw_surface **srf_out)
1159 {
1160 	struct vmw_surface_metadata metadata = {0};
1161 	uint32_t format;
1162 	struct vmw_resource *res;
1163 	unsigned int bytes_pp;
1164 	int ret;
1165 
1166 	switch (mode_cmd->pixel_format) {
1167 	case DRM_FORMAT_ARGB8888:
1168 	case DRM_FORMAT_XRGB8888:
1169 		format = SVGA3D_X8R8G8B8;
1170 		bytes_pp = 4;
1171 		break;
1172 
1173 	case DRM_FORMAT_RGB565:
1174 	case DRM_FORMAT_XRGB1555:
1175 		format = SVGA3D_R5G6B5;
1176 		bytes_pp = 2;
1177 		break;
1178 
1179 	case 8:
1180 		format = SVGA3D_P8;
1181 		bytes_pp = 1;
1182 		break;
1183 
1184 	default:
1185 		DRM_ERROR("Invalid framebuffer format %p4cc\n",
1186 			  &mode_cmd->pixel_format);
1187 		return -EINVAL;
1188 	}
1189 
1190 	metadata.format = format;
1191 	metadata.mip_levels[0] = 1;
1192 	metadata.num_sizes = 1;
1193 	metadata.base_size.width = mode_cmd->pitches[0] / bytes_pp;
1194 	metadata.base_size.height =  mode_cmd->height;
1195 	metadata.base_size.depth = 1;
1196 	metadata.scanout = true;
1197 
1198 	ret = vmw_gb_surface_define(vmw_priv(dev), &metadata, srf_out);
1199 	if (ret) {
1200 		DRM_ERROR("Failed to allocate proxy content buffer\n");
1201 		return ret;
1202 	}
1203 
1204 	res = &(*srf_out)->res;
1205 
1206 	/* Reserve and switch the backing mob. */
1207 	mutex_lock(&res->dev_priv->cmdbuf_mutex);
1208 	(void) vmw_resource_reserve(res, false, true);
1209 	vmw_bo_unreference(&res->backup);
1210 	res->backup = vmw_bo_reference(bo_mob);
1211 	res->backup_offset = 0;
1212 	vmw_resource_unreserve(res, false, false, false, NULL, 0);
1213 	mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1214 
1215 	return 0;
1216 }
1217 
1218 
1219 
1220 static int vmw_kms_new_framebuffer_bo(struct vmw_private *dev_priv,
1221 				      struct vmw_buffer_object *bo,
1222 				      struct vmw_framebuffer **out,
1223 				      const struct drm_mode_fb_cmd2
1224 				      *mode_cmd)
1225 
1226 {
1227 	struct drm_device *dev = &dev_priv->drm;
1228 	struct vmw_framebuffer_bo *vfbd;
1229 	unsigned int requested_size;
1230 	int ret;
1231 
1232 	requested_size = mode_cmd->height * mode_cmd->pitches[0];
1233 	if (unlikely(requested_size > bo->base.base.size)) {
1234 		DRM_ERROR("Screen buffer object size is too small "
1235 			  "for requested mode.\n");
1236 		return -EINVAL;
1237 	}
1238 
1239 	/* Limited framebuffer color depth support for screen objects */
1240 	if (dev_priv->active_display_unit == vmw_du_screen_object) {
1241 		switch (mode_cmd->pixel_format) {
1242 		case DRM_FORMAT_XRGB8888:
1243 		case DRM_FORMAT_ARGB8888:
1244 			break;
1245 		case DRM_FORMAT_XRGB1555:
1246 		case DRM_FORMAT_RGB565:
1247 			break;
1248 		default:
1249 			DRM_ERROR("Invalid pixel format: %p4cc\n",
1250 				  &mode_cmd->pixel_format);
1251 			return -EINVAL;
1252 		}
1253 	}
1254 
1255 	vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
1256 	if (!vfbd) {
1257 		ret = -ENOMEM;
1258 		goto out_err1;
1259 	}
1260 
1261 	vfbd->base.base.obj[0] = &bo->base.base;
1262 	drm_helper_mode_fill_fb_struct(dev, &vfbd->base.base, mode_cmd);
1263 	vfbd->base.bo = true;
1264 	vfbd->buffer = vmw_bo_reference(bo);
1265 	vfbd->base.user_handle = mode_cmd->handles[0];
1266 	*out = &vfbd->base;
1267 
1268 	ret = drm_framebuffer_init(dev, &vfbd->base.base,
1269 				   &vmw_framebuffer_bo_funcs);
1270 	if (ret)
1271 		goto out_err2;
1272 
1273 	return 0;
1274 
1275 out_err2:
1276 	vmw_bo_unreference(&bo);
1277 	kfree(vfbd);
1278 out_err1:
1279 	return ret;
1280 }
1281 
1282 
1283 /**
1284  * vmw_kms_srf_ok - check if a surface can be created
1285  *
1286  * @dev_priv: Pointer to device private struct.
1287  * @width: requested width
1288  * @height: requested height
1289  *
1290  * Surfaces need to be less than texture size
1291  */
1292 static bool
1293 vmw_kms_srf_ok(struct vmw_private *dev_priv, uint32_t width, uint32_t height)
1294 {
1295 	if (width  > dev_priv->texture_max_width ||
1296 	    height > dev_priv->texture_max_height)
1297 		return false;
1298 
1299 	return true;
1300 }
1301 
1302 /**
1303  * vmw_kms_new_framebuffer - Create a new framebuffer.
1304  *
1305  * @dev_priv: Pointer to device private struct.
1306  * @bo: Pointer to buffer object to wrap the kms framebuffer around.
1307  * Either @bo or @surface must be NULL.
1308  * @surface: Pointer to a surface to wrap the kms framebuffer around.
1309  * Either @bo or @surface must be NULL.
1310  * @only_2d: No presents will occur to this buffer object based framebuffer.
1311  * This helps the code to do some important optimizations.
1312  * @mode_cmd: Frame-buffer metadata.
1313  */
1314 struct vmw_framebuffer *
1315 vmw_kms_new_framebuffer(struct vmw_private *dev_priv,
1316 			struct vmw_buffer_object *bo,
1317 			struct vmw_surface *surface,
1318 			bool only_2d,
1319 			const struct drm_mode_fb_cmd2 *mode_cmd)
1320 {
1321 	struct vmw_framebuffer *vfb = NULL;
1322 	bool is_bo_proxy = false;
1323 	int ret;
1324 
1325 	/*
1326 	 * We cannot use the SurfaceDMA command in an non-accelerated VM,
1327 	 * therefore, wrap the buffer object in a surface so we can use the
1328 	 * SurfaceCopy command.
1329 	 */
1330 	if (vmw_kms_srf_ok(dev_priv, mode_cmd->width, mode_cmd->height)  &&
1331 	    bo && only_2d &&
1332 	    mode_cmd->width > 64 &&  /* Don't create a proxy for cursor */
1333 	    dev_priv->active_display_unit == vmw_du_screen_target) {
1334 		ret = vmw_create_bo_proxy(&dev_priv->drm, mode_cmd,
1335 					  bo, &surface);
1336 		if (ret)
1337 			return ERR_PTR(ret);
1338 
1339 		is_bo_proxy = true;
1340 	}
1341 
1342 	/* Create the new framebuffer depending one what we have */
1343 	if (surface) {
1344 		ret = vmw_kms_new_framebuffer_surface(dev_priv, surface, &vfb,
1345 						      mode_cmd,
1346 						      is_bo_proxy);
1347 
1348 		/*
1349 		 * vmw_create_bo_proxy() adds a reference that is no longer
1350 		 * needed
1351 		 */
1352 		if (is_bo_proxy)
1353 			vmw_surface_unreference(&surface);
1354 	} else if (bo) {
1355 		ret = vmw_kms_new_framebuffer_bo(dev_priv, bo, &vfb,
1356 						 mode_cmd);
1357 	} else {
1358 		BUG();
1359 	}
1360 
1361 	if (ret)
1362 		return ERR_PTR(ret);
1363 
1364 	vfb->pin = vmw_framebuffer_pin;
1365 	vfb->unpin = vmw_framebuffer_unpin;
1366 
1367 	return vfb;
1368 }
1369 
1370 /*
1371  * Generic Kernel modesetting functions
1372  */
1373 
1374 static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
1375 						 struct drm_file *file_priv,
1376 						 const struct drm_mode_fb_cmd2 *mode_cmd)
1377 {
1378 	struct vmw_private *dev_priv = vmw_priv(dev);
1379 	struct vmw_framebuffer *vfb = NULL;
1380 	struct vmw_surface *surface = NULL;
1381 	struct vmw_buffer_object *bo = NULL;
1382 	int ret;
1383 
1384 	/* returns either a bo or surface */
1385 	ret = vmw_user_lookup_handle(dev_priv, file_priv,
1386 				     mode_cmd->handles[0],
1387 				     &surface, &bo);
1388 	if (ret)
1389 		goto err_out;
1390 
1391 
1392 	if (!bo &&
1393 	    !vmw_kms_srf_ok(dev_priv, mode_cmd->width, mode_cmd->height)) {
1394 		DRM_ERROR("Surface size cannot exceed %dx%d",
1395 			dev_priv->texture_max_width,
1396 			dev_priv->texture_max_height);
1397 		goto err_out;
1398 	}
1399 
1400 
1401 	vfb = vmw_kms_new_framebuffer(dev_priv, bo, surface,
1402 				      !(dev_priv->capabilities & SVGA_CAP_3D),
1403 				      mode_cmd);
1404 	if (IS_ERR(vfb)) {
1405 		ret = PTR_ERR(vfb);
1406 		goto err_out;
1407  	}
1408 
1409 err_out:
1410 	/* vmw_user_lookup_handle takes one ref so does new_fb */
1411 	if (bo)
1412 		vmw_bo_unreference(&bo);
1413 	if (surface)
1414 		vmw_surface_unreference(&surface);
1415 
1416 	if (ret) {
1417 		DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
1418 		return ERR_PTR(ret);
1419 	}
1420 
1421 	return &vfb->base;
1422 }
1423 
1424 /**
1425  * vmw_kms_check_display_memory - Validates display memory required for a
1426  * topology
1427  * @dev: DRM device
1428  * @num_rects: number of drm_rect in rects
1429  * @rects: array of drm_rect representing the topology to validate indexed by
1430  * crtc index.
1431  *
1432  * Returns:
1433  * 0 on success otherwise negative error code
1434  */
1435 static int vmw_kms_check_display_memory(struct drm_device *dev,
1436 					uint32_t num_rects,
1437 					struct drm_rect *rects)
1438 {
1439 	struct vmw_private *dev_priv = vmw_priv(dev);
1440 	struct drm_rect bounding_box = {0};
1441 	u64 total_pixels = 0, pixel_mem, bb_mem;
1442 	int i;
1443 
1444 	for (i = 0; i < num_rects; i++) {
1445 		/*
1446 		 * For STDU only individual screen (screen target) is limited by
1447 		 * SCREENTARGET_MAX_WIDTH/HEIGHT registers.
1448 		 */
1449 		if (dev_priv->active_display_unit == vmw_du_screen_target &&
1450 		    (drm_rect_width(&rects[i]) > dev_priv->stdu_max_width ||
1451 		     drm_rect_height(&rects[i]) > dev_priv->stdu_max_height)) {
1452 			VMW_DEBUG_KMS("Screen size not supported.\n");
1453 			return -EINVAL;
1454 		}
1455 
1456 		/* Bounding box upper left is at (0,0). */
1457 		if (rects[i].x2 > bounding_box.x2)
1458 			bounding_box.x2 = rects[i].x2;
1459 
1460 		if (rects[i].y2 > bounding_box.y2)
1461 			bounding_box.y2 = rects[i].y2;
1462 
1463 		total_pixels += (u64) drm_rect_width(&rects[i]) *
1464 			(u64) drm_rect_height(&rects[i]);
1465 	}
1466 
1467 	/* Virtual svga device primary limits are always in 32-bpp. */
1468 	pixel_mem = total_pixels * 4;
1469 
1470 	/*
1471 	 * For HV10 and below prim_bb_mem is vram size. When
1472 	 * SVGA_REG_MAX_PRIMARY_BOUNDING_BOX_MEM is not present vram size is
1473 	 * limit on primary bounding box
1474 	 */
1475 	if (pixel_mem > dev_priv->max_primary_mem) {
1476 		VMW_DEBUG_KMS("Combined output size too large.\n");
1477 		return -EINVAL;
1478 	}
1479 
1480 	/* SVGA_CAP_NO_BB_RESTRICTION is available for STDU only. */
1481 	if (dev_priv->active_display_unit != vmw_du_screen_target ||
1482 	    !(dev_priv->capabilities & SVGA_CAP_NO_BB_RESTRICTION)) {
1483 		bb_mem = (u64) bounding_box.x2 * bounding_box.y2 * 4;
1484 
1485 		if (bb_mem > dev_priv->max_primary_mem) {
1486 			VMW_DEBUG_KMS("Topology is beyond supported limits.\n");
1487 			return -EINVAL;
1488 		}
1489 	}
1490 
1491 	return 0;
1492 }
1493 
1494 /**
1495  * vmw_crtc_state_and_lock - Return new or current crtc state with locked
1496  * crtc mutex
1497  * @state: The atomic state pointer containing the new atomic state
1498  * @crtc: The crtc
1499  *
1500  * This function returns the new crtc state if it's part of the state update.
1501  * Otherwise returns the current crtc state. It also makes sure that the
1502  * crtc mutex is locked.
1503  *
1504  * Returns: A valid crtc state pointer or NULL. It may also return a
1505  * pointer error, in particular -EDEADLK if locking needs to be rerun.
1506  */
1507 static struct drm_crtc_state *
1508 vmw_crtc_state_and_lock(struct drm_atomic_state *state, struct drm_crtc *crtc)
1509 {
1510 	struct drm_crtc_state *crtc_state;
1511 
1512 	crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
1513 	if (crtc_state) {
1514 		lockdep_assert_held(&crtc->mutex.mutex.base);
1515 	} else {
1516 		int ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx);
1517 
1518 		if (ret != 0 && ret != -EALREADY)
1519 			return ERR_PTR(ret);
1520 
1521 		crtc_state = crtc->state;
1522 	}
1523 
1524 	return crtc_state;
1525 }
1526 
1527 /**
1528  * vmw_kms_check_implicit - Verify that all implicit display units scan out
1529  * from the same fb after the new state is committed.
1530  * @dev: The drm_device.
1531  * @state: The new state to be checked.
1532  *
1533  * Returns:
1534  *   Zero on success,
1535  *   -EINVAL on invalid state,
1536  *   -EDEADLK if modeset locking needs to be rerun.
1537  */
1538 static int vmw_kms_check_implicit(struct drm_device *dev,
1539 				  struct drm_atomic_state *state)
1540 {
1541 	struct drm_framebuffer *implicit_fb = NULL;
1542 	struct drm_crtc *crtc;
1543 	struct drm_crtc_state *crtc_state;
1544 	struct drm_plane_state *plane_state;
1545 
1546 	drm_for_each_crtc(crtc, dev) {
1547 		struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
1548 
1549 		if (!du->is_implicit)
1550 			continue;
1551 
1552 		crtc_state = vmw_crtc_state_and_lock(state, crtc);
1553 		if (IS_ERR(crtc_state))
1554 			return PTR_ERR(crtc_state);
1555 
1556 		if (!crtc_state || !crtc_state->enable)
1557 			continue;
1558 
1559 		/*
1560 		 * Can't move primary planes across crtcs, so this is OK.
1561 		 * It also means we don't need to take the plane mutex.
1562 		 */
1563 		plane_state = du->primary.state;
1564 		if (plane_state->crtc != crtc)
1565 			continue;
1566 
1567 		if (!implicit_fb)
1568 			implicit_fb = plane_state->fb;
1569 		else if (implicit_fb != plane_state->fb)
1570 			return -EINVAL;
1571 	}
1572 
1573 	return 0;
1574 }
1575 
1576 /**
1577  * vmw_kms_check_topology - Validates topology in drm_atomic_state
1578  * @dev: DRM device
1579  * @state: the driver state object
1580  *
1581  * Returns:
1582  * 0 on success otherwise negative error code
1583  */
1584 static int vmw_kms_check_topology(struct drm_device *dev,
1585 				  struct drm_atomic_state *state)
1586 {
1587 	struct drm_crtc_state *old_crtc_state, *new_crtc_state;
1588 	struct drm_rect *rects;
1589 	struct drm_crtc *crtc;
1590 	uint32_t i;
1591 	int ret = 0;
1592 
1593 	rects = kcalloc(dev->mode_config.num_crtc, sizeof(struct drm_rect),
1594 			GFP_KERNEL);
1595 	if (!rects)
1596 		return -ENOMEM;
1597 
1598 	drm_for_each_crtc(crtc, dev) {
1599 		struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
1600 		struct drm_crtc_state *crtc_state;
1601 
1602 		i = drm_crtc_index(crtc);
1603 
1604 		crtc_state = vmw_crtc_state_and_lock(state, crtc);
1605 		if (IS_ERR(crtc_state)) {
1606 			ret = PTR_ERR(crtc_state);
1607 			goto clean;
1608 		}
1609 
1610 		if (!crtc_state)
1611 			continue;
1612 
1613 		if (crtc_state->enable) {
1614 			rects[i].x1 = du->gui_x;
1615 			rects[i].y1 = du->gui_y;
1616 			rects[i].x2 = du->gui_x + crtc_state->mode.hdisplay;
1617 			rects[i].y2 = du->gui_y + crtc_state->mode.vdisplay;
1618 		} else {
1619 			rects[i].x1 = 0;
1620 			rects[i].y1 = 0;
1621 			rects[i].x2 = 0;
1622 			rects[i].y2 = 0;
1623 		}
1624 	}
1625 
1626 	/* Determine change to topology due to new atomic state */
1627 	for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
1628 				      new_crtc_state, i) {
1629 		struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
1630 		struct drm_connector *connector;
1631 		struct drm_connector_state *conn_state;
1632 		struct vmw_connector_state *vmw_conn_state;
1633 
1634 		if (!du->pref_active && new_crtc_state->enable) {
1635 			VMW_DEBUG_KMS("Enabling a disabled display unit\n");
1636 			ret = -EINVAL;
1637 			goto clean;
1638 		}
1639 
1640 		/*
1641 		 * For vmwgfx each crtc has only one connector attached and it
1642 		 * is not changed so don't really need to check the
1643 		 * crtc->connector_mask and iterate over it.
1644 		 */
1645 		connector = &du->connector;
1646 		conn_state = drm_atomic_get_connector_state(state, connector);
1647 		if (IS_ERR(conn_state)) {
1648 			ret = PTR_ERR(conn_state);
1649 			goto clean;
1650 		}
1651 
1652 		vmw_conn_state = vmw_connector_state_to_vcs(conn_state);
1653 		vmw_conn_state->gui_x = du->gui_x;
1654 		vmw_conn_state->gui_y = du->gui_y;
1655 	}
1656 
1657 	ret = vmw_kms_check_display_memory(dev, dev->mode_config.num_crtc,
1658 					   rects);
1659 
1660 clean:
1661 	kfree(rects);
1662 	return ret;
1663 }
1664 
1665 /**
1666  * vmw_kms_atomic_check_modeset- validate state object for modeset changes
1667  *
1668  * @dev: DRM device
1669  * @state: the driver state object
1670  *
1671  * This is a simple wrapper around drm_atomic_helper_check_modeset() for
1672  * us to assign a value to mode->crtc_clock so that
1673  * drm_calc_timestamping_constants() won't throw an error message
1674  *
1675  * Returns:
1676  * Zero for success or -errno
1677  */
1678 static int
1679 vmw_kms_atomic_check_modeset(struct drm_device *dev,
1680 			     struct drm_atomic_state *state)
1681 {
1682 	struct drm_crtc *crtc;
1683 	struct drm_crtc_state *crtc_state;
1684 	bool need_modeset = false;
1685 	int i, ret;
1686 
1687 	ret = drm_atomic_helper_check(dev, state);
1688 	if (ret)
1689 		return ret;
1690 
1691 	ret = vmw_kms_check_implicit(dev, state);
1692 	if (ret) {
1693 		VMW_DEBUG_KMS("Invalid implicit state\n");
1694 		return ret;
1695 	}
1696 
1697 	for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
1698 		if (drm_atomic_crtc_needs_modeset(crtc_state))
1699 			need_modeset = true;
1700 	}
1701 
1702 	if (need_modeset)
1703 		return vmw_kms_check_topology(dev, state);
1704 
1705 	return ret;
1706 }
1707 
1708 static const struct drm_mode_config_funcs vmw_kms_funcs = {
1709 	.fb_create = vmw_kms_fb_create,
1710 	.atomic_check = vmw_kms_atomic_check_modeset,
1711 	.atomic_commit = drm_atomic_helper_commit,
1712 };
1713 
1714 static int vmw_kms_generic_present(struct vmw_private *dev_priv,
1715 				   struct drm_file *file_priv,
1716 				   struct vmw_framebuffer *vfb,
1717 				   struct vmw_surface *surface,
1718 				   uint32_t sid,
1719 				   int32_t destX, int32_t destY,
1720 				   struct drm_vmw_rect *clips,
1721 				   uint32_t num_clips)
1722 {
1723 	return vmw_kms_sou_do_surface_dirty(dev_priv, vfb, NULL, clips,
1724 					    &surface->res, destX, destY,
1725 					    num_clips, 1, NULL, NULL);
1726 }
1727 
1728 
1729 int vmw_kms_present(struct vmw_private *dev_priv,
1730 		    struct drm_file *file_priv,
1731 		    struct vmw_framebuffer *vfb,
1732 		    struct vmw_surface *surface,
1733 		    uint32_t sid,
1734 		    int32_t destX, int32_t destY,
1735 		    struct drm_vmw_rect *clips,
1736 		    uint32_t num_clips)
1737 {
1738 	int ret;
1739 
1740 	switch (dev_priv->active_display_unit) {
1741 	case vmw_du_screen_target:
1742 		ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, clips,
1743 						 &surface->res, destX, destY,
1744 						 num_clips, 1, NULL, NULL);
1745 		break;
1746 	case vmw_du_screen_object:
1747 		ret = vmw_kms_generic_present(dev_priv, file_priv, vfb, surface,
1748 					      sid, destX, destY, clips,
1749 					      num_clips);
1750 		break;
1751 	default:
1752 		WARN_ONCE(true,
1753 			  "Present called with invalid display system.\n");
1754 		ret = -ENOSYS;
1755 		break;
1756 	}
1757 	if (ret)
1758 		return ret;
1759 
1760 	vmw_cmd_flush(dev_priv, false);
1761 
1762 	return 0;
1763 }
1764 
1765 static void
1766 vmw_kms_create_hotplug_mode_update_property(struct vmw_private *dev_priv)
1767 {
1768 	if (dev_priv->hotplug_mode_update_property)
1769 		return;
1770 
1771 	dev_priv->hotplug_mode_update_property =
1772 		drm_property_create_range(&dev_priv->drm,
1773 					  DRM_MODE_PROP_IMMUTABLE,
1774 					  "hotplug_mode_update", 0, 1);
1775 }
1776 
1777 int vmw_kms_init(struct vmw_private *dev_priv)
1778 {
1779 	struct drm_device *dev = &dev_priv->drm;
1780 	int ret;
1781 	static const char *display_unit_names[] = {
1782 		"Invalid",
1783 		"Legacy",
1784 		"Screen Object",
1785 		"Screen Target",
1786 		"Invalid (max)"
1787 	};
1788 
1789 	drm_mode_config_init(dev);
1790 	dev->mode_config.funcs = &vmw_kms_funcs;
1791 	dev->mode_config.min_width = 1;
1792 	dev->mode_config.min_height = 1;
1793 	dev->mode_config.max_width = dev_priv->texture_max_width;
1794 	dev->mode_config.max_height = dev_priv->texture_max_height;
1795 
1796 	drm_mode_create_suggested_offset_properties(dev);
1797 	vmw_kms_create_hotplug_mode_update_property(dev_priv);
1798 
1799 	ret = vmw_kms_stdu_init_display(dev_priv);
1800 	if (ret) {
1801 		ret = vmw_kms_sou_init_display(dev_priv);
1802 		if (ret) /* Fallback */
1803 			ret = vmw_kms_ldu_init_display(dev_priv);
1804 	}
1805 	BUILD_BUG_ON(ARRAY_SIZE(display_unit_names) != (vmw_du_max + 1));
1806 	drm_info(&dev_priv->drm, "%s display unit initialized\n",
1807 		 display_unit_names[dev_priv->active_display_unit]);
1808 
1809 	return ret;
1810 }
1811 
1812 int vmw_kms_close(struct vmw_private *dev_priv)
1813 {
1814 	int ret = 0;
1815 
1816 	/*
1817 	 * Docs says we should take the lock before calling this function
1818 	 * but since it destroys encoders and our destructor calls
1819 	 * drm_encoder_cleanup which takes the lock we deadlock.
1820 	 */
1821 	drm_mode_config_cleanup(&dev_priv->drm);
1822 	if (dev_priv->active_display_unit == vmw_du_legacy)
1823 		ret = vmw_kms_ldu_close_display(dev_priv);
1824 
1825 	return ret;
1826 }
1827 
1828 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
1829 				struct drm_file *file_priv)
1830 {
1831 	struct drm_vmw_cursor_bypass_arg *arg = data;
1832 	struct vmw_display_unit *du;
1833 	struct drm_crtc *crtc;
1834 	int ret = 0;
1835 
1836 
1837 	mutex_lock(&dev->mode_config.mutex);
1838 	if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
1839 
1840 		list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1841 			du = vmw_crtc_to_du(crtc);
1842 			du->hotspot_x = arg->xhot;
1843 			du->hotspot_y = arg->yhot;
1844 		}
1845 
1846 		mutex_unlock(&dev->mode_config.mutex);
1847 		return 0;
1848 	}
1849 
1850 	crtc = drm_crtc_find(dev, file_priv, arg->crtc_id);
1851 	if (!crtc) {
1852 		ret = -ENOENT;
1853 		goto out;
1854 	}
1855 
1856 	du = vmw_crtc_to_du(crtc);
1857 
1858 	du->hotspot_x = arg->xhot;
1859 	du->hotspot_y = arg->yhot;
1860 
1861 out:
1862 	mutex_unlock(&dev->mode_config.mutex);
1863 
1864 	return ret;
1865 }
1866 
1867 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
1868 			unsigned width, unsigned height, unsigned pitch,
1869 			unsigned bpp, unsigned depth)
1870 {
1871 	if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1872 		vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
1873 	else if (vmw_fifo_have_pitchlock(vmw_priv))
1874 		vmw_fifo_mem_write(vmw_priv, SVGA_FIFO_PITCHLOCK, pitch);
1875 	vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
1876 	vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
1877 	if ((vmw_priv->capabilities & SVGA_CAP_8BIT_EMULATION) != 0)
1878 		vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bpp);
1879 
1880 	if (vmw_read(vmw_priv, SVGA_REG_DEPTH) != depth) {
1881 		DRM_ERROR("Invalid depth %u for %u bpp, host expects %u\n",
1882 			  depth, bpp, vmw_read(vmw_priv, SVGA_REG_DEPTH));
1883 		return -EINVAL;
1884 	}
1885 
1886 	return 0;
1887 }
1888 
1889 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
1890 				uint32_t pitch,
1891 				uint32_t height)
1892 {
1893 	return ((u64) pitch * (u64) height) < (u64)
1894 		((dev_priv->active_display_unit == vmw_du_screen_target) ?
1895 		 dev_priv->max_primary_mem : dev_priv->vram_size);
1896 }
1897 
1898 
1899 /*
1900  * Function called by DRM code called with vbl_lock held.
1901  */
1902 u32 vmw_get_vblank_counter(struct drm_crtc *crtc)
1903 {
1904 	return 0;
1905 }
1906 
1907 /*
1908  * Function called by DRM code called with vbl_lock held.
1909  */
1910 int vmw_enable_vblank(struct drm_crtc *crtc)
1911 {
1912 	return -EINVAL;
1913 }
1914 
1915 /*
1916  * Function called by DRM code called with vbl_lock held.
1917  */
1918 void vmw_disable_vblank(struct drm_crtc *crtc)
1919 {
1920 }
1921 
1922 /**
1923  * vmw_du_update_layout - Update the display unit with topology from resolution
1924  * plugin and generate DRM uevent
1925  * @dev_priv: device private
1926  * @num_rects: number of drm_rect in rects
1927  * @rects: toplogy to update
1928  */
1929 static int vmw_du_update_layout(struct vmw_private *dev_priv,
1930 				unsigned int num_rects, struct drm_rect *rects)
1931 {
1932 	struct drm_device *dev = &dev_priv->drm;
1933 	struct vmw_display_unit *du;
1934 	struct drm_connector *con;
1935 	struct drm_connector_list_iter conn_iter;
1936 	struct drm_modeset_acquire_ctx ctx;
1937 	struct drm_crtc *crtc;
1938 	int ret;
1939 
1940 	/* Currently gui_x/y is protected with the crtc mutex */
1941 	mutex_lock(&dev->mode_config.mutex);
1942 	drm_modeset_acquire_init(&ctx, 0);
1943 retry:
1944 	drm_for_each_crtc(crtc, dev) {
1945 		ret = drm_modeset_lock(&crtc->mutex, &ctx);
1946 		if (ret < 0) {
1947 			if (ret == -EDEADLK) {
1948 				drm_modeset_backoff(&ctx);
1949 				goto retry;
1950       		}
1951 			goto out_fini;
1952 		}
1953 	}
1954 
1955 	drm_connector_list_iter_begin(dev, &conn_iter);
1956 	drm_for_each_connector_iter(con, &conn_iter) {
1957 		du = vmw_connector_to_du(con);
1958 		if (num_rects > du->unit) {
1959 			du->pref_width = drm_rect_width(&rects[du->unit]);
1960 			du->pref_height = drm_rect_height(&rects[du->unit]);
1961 			du->pref_active = true;
1962 			du->gui_x = rects[du->unit].x1;
1963 			du->gui_y = rects[du->unit].y1;
1964 		} else {
1965 			du->pref_width = 800;
1966 			du->pref_height = 600;
1967 			du->pref_active = false;
1968 			du->gui_x = 0;
1969 			du->gui_y = 0;
1970 		}
1971 	}
1972 	drm_connector_list_iter_end(&conn_iter);
1973 
1974 	list_for_each_entry(con, &dev->mode_config.connector_list, head) {
1975 		du = vmw_connector_to_du(con);
1976 		if (num_rects > du->unit) {
1977 			drm_object_property_set_value
1978 			  (&con->base, dev->mode_config.suggested_x_property,
1979 			   du->gui_x);
1980 			drm_object_property_set_value
1981 			  (&con->base, dev->mode_config.suggested_y_property,
1982 			   du->gui_y);
1983 		} else {
1984 			drm_object_property_set_value
1985 			  (&con->base, dev->mode_config.suggested_x_property,
1986 			   0);
1987 			drm_object_property_set_value
1988 			  (&con->base, dev->mode_config.suggested_y_property,
1989 			   0);
1990 		}
1991 		con->status = vmw_du_connector_detect(con, true);
1992 	}
1993 
1994 	drm_sysfs_hotplug_event(dev);
1995 out_fini:
1996 	drm_modeset_drop_locks(&ctx);
1997 	drm_modeset_acquire_fini(&ctx);
1998 	mutex_unlock(&dev->mode_config.mutex);
1999 
2000 	return 0;
2001 }
2002 
2003 int vmw_du_crtc_gamma_set(struct drm_crtc *crtc,
2004 			  u16 *r, u16 *g, u16 *b,
2005 			  uint32_t size,
2006 			  struct drm_modeset_acquire_ctx *ctx)
2007 {
2008 	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
2009 	int i;
2010 
2011 	for (i = 0; i < size; i++) {
2012 		DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i,
2013 			  r[i], g[i], b[i]);
2014 		vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
2015 		vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
2016 		vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
2017 	}
2018 
2019 	return 0;
2020 }
2021 
2022 int vmw_du_connector_dpms(struct drm_connector *connector, int mode)
2023 {
2024 	return 0;
2025 }
2026 
2027 enum drm_connector_status
2028 vmw_du_connector_detect(struct drm_connector *connector, bool force)
2029 {
2030 	uint32_t num_displays;
2031 	struct drm_device *dev = connector->dev;
2032 	struct vmw_private *dev_priv = vmw_priv(dev);
2033 	struct vmw_display_unit *du = vmw_connector_to_du(connector);
2034 
2035 	num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);
2036 
2037 	return ((vmw_connector_to_du(connector)->unit < num_displays &&
2038 		 du->pref_active) ?
2039 		connector_status_connected : connector_status_disconnected);
2040 }
2041 
2042 static struct drm_display_mode vmw_kms_connector_builtin[] = {
2043 	/* 640x480@60Hz */
2044 	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
2045 		   752, 800, 0, 480, 489, 492, 525, 0,
2046 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
2047 	/* 800x600@60Hz */
2048 	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
2049 		   968, 1056, 0, 600, 601, 605, 628, 0,
2050 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2051 	/* 1024x768@60Hz */
2052 	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
2053 		   1184, 1344, 0, 768, 771, 777, 806, 0,
2054 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
2055 	/* 1152x864@75Hz */
2056 	{ DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
2057 		   1344, 1600, 0, 864, 865, 868, 900, 0,
2058 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2059 	/* 1280x720@60Hz */
2060 	{ DRM_MODE("1280x720", DRM_MODE_TYPE_DRIVER, 74500, 1280, 1344,
2061 		   1472, 1664, 0, 720, 723, 728, 748, 0,
2062 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2063 	/* 1280x768@60Hz */
2064 	{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
2065 		   1472, 1664, 0, 768, 771, 778, 798, 0,
2066 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2067 	/* 1280x800@60Hz */
2068 	{ DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
2069 		   1480, 1680, 0, 800, 803, 809, 831, 0,
2070 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
2071 	/* 1280x960@60Hz */
2072 	{ DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
2073 		   1488, 1800, 0, 960, 961, 964, 1000, 0,
2074 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2075 	/* 1280x1024@60Hz */
2076 	{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
2077 		   1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
2078 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2079 	/* 1360x768@60Hz */
2080 	{ DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
2081 		   1536, 1792, 0, 768, 771, 777, 795, 0,
2082 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2083 	/* 1440x1050@60Hz */
2084 	{ DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
2085 		   1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
2086 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2087 	/* 1440x900@60Hz */
2088 	{ DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
2089 		   1672, 1904, 0, 900, 903, 909, 934, 0,
2090 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2091 	/* 1600x1200@60Hz */
2092 	{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
2093 		   1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
2094 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2095 	/* 1680x1050@60Hz */
2096 	{ DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
2097 		   1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
2098 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2099 	/* 1792x1344@60Hz */
2100 	{ DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
2101 		   2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
2102 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2103 	/* 1853x1392@60Hz */
2104 	{ DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
2105 		   2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
2106 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2107 	/* 1920x1080@60Hz */
2108 	{ DRM_MODE("1920x1080", DRM_MODE_TYPE_DRIVER, 173000, 1920, 2048,
2109 		   2248, 2576, 0, 1080, 1083, 1088, 1120, 0,
2110 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2111 	/* 1920x1200@60Hz */
2112 	{ DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
2113 		   2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
2114 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2115 	/* 1920x1440@60Hz */
2116 	{ DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
2117 		   2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
2118 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2119 	/* 2560x1440@60Hz */
2120 	{ DRM_MODE("2560x1440", DRM_MODE_TYPE_DRIVER, 241500, 2560, 2608,
2121 		   2640, 2720, 0, 1440, 1443, 1448, 1481, 0,
2122 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
2123 	/* 2560x1600@60Hz */
2124 	{ DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
2125 		   3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
2126 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2127 	/* 2880x1800@60Hz */
2128 	{ DRM_MODE("2880x1800", DRM_MODE_TYPE_DRIVER, 337500, 2880, 2928,
2129 		   2960, 3040, 0, 1800, 1803, 1809, 1852, 0,
2130 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
2131 	/* 3840x2160@60Hz */
2132 	{ DRM_MODE("3840x2160", DRM_MODE_TYPE_DRIVER, 533000, 3840, 3888,
2133 		   3920, 4000, 0, 2160, 2163, 2168, 2222, 0,
2134 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
2135 	/* 3840x2400@60Hz */
2136 	{ DRM_MODE("3840x2400", DRM_MODE_TYPE_DRIVER, 592250, 3840, 3888,
2137 		   3920, 4000, 0, 2400, 2403, 2409, 2469, 0,
2138 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
2139 	/* Terminate */
2140 	{ DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
2141 };
2142 
2143 /**
2144  * vmw_guess_mode_timing - Provide fake timings for a
2145  * 60Hz vrefresh mode.
2146  *
2147  * @mode: Pointer to a struct drm_display_mode with hdisplay and vdisplay
2148  * members filled in.
2149  */
2150 void vmw_guess_mode_timing(struct drm_display_mode *mode)
2151 {
2152 	mode->hsync_start = mode->hdisplay + 50;
2153 	mode->hsync_end = mode->hsync_start + 50;
2154 	mode->htotal = mode->hsync_end + 50;
2155 
2156 	mode->vsync_start = mode->vdisplay + 50;
2157 	mode->vsync_end = mode->vsync_start + 50;
2158 	mode->vtotal = mode->vsync_end + 50;
2159 
2160 	mode->clock = (u32)mode->htotal * (u32)mode->vtotal / 100 * 6;
2161 }
2162 
2163 
2164 int vmw_du_connector_fill_modes(struct drm_connector *connector,
2165 				uint32_t max_width, uint32_t max_height)
2166 {
2167 	struct vmw_display_unit *du = vmw_connector_to_du(connector);
2168 	struct drm_device *dev = connector->dev;
2169 	struct vmw_private *dev_priv = vmw_priv(dev);
2170 	struct drm_display_mode *mode = NULL;
2171 	struct drm_display_mode *bmode;
2172 	struct drm_display_mode prefmode = { DRM_MODE("preferred",
2173 		DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
2174 		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
2175 		DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
2176 	};
2177 	int i;
2178 	u32 assumed_bpp = 4;
2179 
2180 	if (dev_priv->assume_16bpp)
2181 		assumed_bpp = 2;
2182 
2183 	max_width  = min(max_width,  dev_priv->texture_max_width);
2184 	max_height = min(max_height, dev_priv->texture_max_height);
2185 
2186 	/*
2187 	 * For STDU extra limit for a mode on SVGA_REG_SCREENTARGET_MAX_WIDTH/
2188 	 * HEIGHT registers.
2189 	 */
2190 	if (dev_priv->active_display_unit == vmw_du_screen_target) {
2191 		max_width  = min(max_width,  dev_priv->stdu_max_width);
2192 		max_height = min(max_height, dev_priv->stdu_max_height);
2193 	}
2194 
2195 	/* Add preferred mode */
2196 	mode = drm_mode_duplicate(dev, &prefmode);
2197 	if (!mode)
2198 		return 0;
2199 	mode->hdisplay = du->pref_width;
2200 	mode->vdisplay = du->pref_height;
2201 	vmw_guess_mode_timing(mode);
2202 	drm_mode_set_name(mode);
2203 
2204 	if (vmw_kms_validate_mode_vram(dev_priv,
2205 					mode->hdisplay * assumed_bpp,
2206 					mode->vdisplay)) {
2207 		drm_mode_probed_add(connector, mode);
2208 	} else {
2209 		drm_mode_destroy(dev, mode);
2210 		mode = NULL;
2211 	}
2212 
2213 	if (du->pref_mode) {
2214 		list_del_init(&du->pref_mode->head);
2215 		drm_mode_destroy(dev, du->pref_mode);
2216 	}
2217 
2218 	/* mode might be null here, this is intended */
2219 	du->pref_mode = mode;
2220 
2221 	for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {
2222 		bmode = &vmw_kms_connector_builtin[i];
2223 		if (bmode->hdisplay > max_width ||
2224 		    bmode->vdisplay > max_height)
2225 			continue;
2226 
2227 		if (!vmw_kms_validate_mode_vram(dev_priv,
2228 						bmode->hdisplay * assumed_bpp,
2229 						bmode->vdisplay))
2230 			continue;
2231 
2232 		mode = drm_mode_duplicate(dev, bmode);
2233 		if (!mode)
2234 			return 0;
2235 
2236 		drm_mode_probed_add(connector, mode);
2237 	}
2238 
2239 	drm_connector_list_update(connector);
2240 	/* Move the prefered mode first, help apps pick the right mode. */
2241 	drm_mode_sort(&connector->modes);
2242 
2243 	return 1;
2244 }
2245 
2246 /**
2247  * vmw_kms_update_layout_ioctl - Handler for DRM_VMW_UPDATE_LAYOUT ioctl
2248  * @dev: drm device for the ioctl
2249  * @data: data pointer for the ioctl
2250  * @file_priv: drm file for the ioctl call
2251  *
2252  * Update preferred topology of display unit as per ioctl request. The topology
2253  * is expressed as array of drm_vmw_rect.
2254  * e.g.
2255  * [0 0 640 480] [640 0 800 600] [0 480 640 480]
2256  *
2257  * NOTE:
2258  * The x and y offset (upper left) in drm_vmw_rect cannot be less than 0. Beside
2259  * device limit on topology, x + w and y + h (lower right) cannot be greater
2260  * than INT_MAX. So topology beyond these limits will return with error.
2261  *
2262  * Returns:
2263  * Zero on success, negative errno on failure.
2264  */
2265 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
2266 				struct drm_file *file_priv)
2267 {
2268 	struct vmw_private *dev_priv = vmw_priv(dev);
2269 	struct drm_mode_config *mode_config = &dev->mode_config;
2270 	struct drm_vmw_update_layout_arg *arg =
2271 		(struct drm_vmw_update_layout_arg *)data;
2272 	void __user *user_rects;
2273 	struct drm_vmw_rect *rects;
2274 	struct drm_rect *drm_rects;
2275 	unsigned rects_size;
2276 	int ret, i;
2277 
2278 	if (!arg->num_outputs) {
2279 		struct drm_rect def_rect = {0, 0, 800, 600};
2280 		VMW_DEBUG_KMS("Default layout x1 = %d y1 = %d x2 = %d y2 = %d\n",
2281 			      def_rect.x1, def_rect.y1,
2282 			      def_rect.x2, def_rect.y2);
2283 		vmw_du_update_layout(dev_priv, 1, &def_rect);
2284 		return 0;
2285 	}
2286 
2287 	rects_size = arg->num_outputs * sizeof(struct drm_vmw_rect);
2288 	rects = kcalloc(arg->num_outputs, sizeof(struct drm_vmw_rect),
2289 			GFP_KERNEL);
2290 	if (unlikely(!rects))
2291 		return -ENOMEM;
2292 
2293 	user_rects = (void __user *)(unsigned long)arg->rects;
2294 	ret = copy_from_user(rects, user_rects, rects_size);
2295 	if (unlikely(ret != 0)) {
2296 		DRM_ERROR("Failed to get rects.\n");
2297 		ret = -EFAULT;
2298 		goto out_free;
2299 	}
2300 
2301 	drm_rects = (struct drm_rect *)rects;
2302 
2303 	VMW_DEBUG_KMS("Layout count = %u\n", arg->num_outputs);
2304 	for (i = 0; i < arg->num_outputs; i++) {
2305 		struct drm_vmw_rect curr_rect;
2306 
2307 		/* Verify user-space for overflow as kernel use drm_rect */
2308 		if ((rects[i].x + rects[i].w > INT_MAX) ||
2309 		    (rects[i].y + rects[i].h > INT_MAX)) {
2310 			ret = -ERANGE;
2311 			goto out_free;
2312 		}
2313 
2314 		curr_rect = rects[i];
2315 		drm_rects[i].x1 = curr_rect.x;
2316 		drm_rects[i].y1 = curr_rect.y;
2317 		drm_rects[i].x2 = curr_rect.x + curr_rect.w;
2318 		drm_rects[i].y2 = curr_rect.y + curr_rect.h;
2319 
2320 		VMW_DEBUG_KMS("  x1 = %d y1 = %d x2 = %d y2 = %d\n",
2321 			      drm_rects[i].x1, drm_rects[i].y1,
2322 			      drm_rects[i].x2, drm_rects[i].y2);
2323 
2324 		/*
2325 		 * Currently this check is limiting the topology within
2326 		 * mode_config->max (which actually is max texture size
2327 		 * supported by virtual device). This limit is here to address
2328 		 * window managers that create a big framebuffer for whole
2329 		 * topology.
2330 		 */
2331 		if (drm_rects[i].x1 < 0 ||  drm_rects[i].y1 < 0 ||
2332 		    drm_rects[i].x2 > mode_config->max_width ||
2333 		    drm_rects[i].y2 > mode_config->max_height) {
2334 			VMW_DEBUG_KMS("Invalid layout %d %d %d %d\n",
2335 				      drm_rects[i].x1, drm_rects[i].y1,
2336 				      drm_rects[i].x2, drm_rects[i].y2);
2337 			ret = -EINVAL;
2338 			goto out_free;
2339 		}
2340 	}
2341 
2342 	ret = vmw_kms_check_display_memory(dev, arg->num_outputs, drm_rects);
2343 
2344 	if (ret == 0)
2345 		vmw_du_update_layout(dev_priv, arg->num_outputs, drm_rects);
2346 
2347 out_free:
2348 	kfree(rects);
2349 	return ret;
2350 }
2351 
2352 /**
2353  * vmw_kms_helper_dirty - Helper to build commands and perform actions based
2354  * on a set of cliprects and a set of display units.
2355  *
2356  * @dev_priv: Pointer to a device private structure.
2357  * @framebuffer: Pointer to the framebuffer on which to perform the actions.
2358  * @clips: A set of struct drm_clip_rect. Either this os @vclips must be NULL.
2359  * Cliprects are given in framebuffer coordinates.
2360  * @vclips: A set of struct drm_vmw_rect cliprects. Either this or @clips must
2361  * be NULL. Cliprects are given in source coordinates.
2362  * @dest_x: X coordinate offset for the crtc / destination clip rects.
2363  * @dest_y: Y coordinate offset for the crtc / destination clip rects.
2364  * @num_clips: Number of cliprects in the @clips or @vclips array.
2365  * @increment: Integer with which to increment the clip counter when looping.
2366  * Used to skip a predetermined number of clip rects.
2367  * @dirty: Closure structure. See the description of struct vmw_kms_dirty.
2368  */
2369 int vmw_kms_helper_dirty(struct vmw_private *dev_priv,
2370 			 struct vmw_framebuffer *framebuffer,
2371 			 const struct drm_clip_rect *clips,
2372 			 const struct drm_vmw_rect *vclips,
2373 			 s32 dest_x, s32 dest_y,
2374 			 int num_clips,
2375 			 int increment,
2376 			 struct vmw_kms_dirty *dirty)
2377 {
2378 	struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
2379 	struct drm_crtc *crtc;
2380 	u32 num_units = 0;
2381 	u32 i, k;
2382 
2383 	dirty->dev_priv = dev_priv;
2384 
2385 	/* If crtc is passed, no need to iterate over other display units */
2386 	if (dirty->crtc) {
2387 		units[num_units++] = vmw_crtc_to_du(dirty->crtc);
2388 	} else {
2389 		list_for_each_entry(crtc, &dev_priv->drm.mode_config.crtc_list,
2390 				    head) {
2391 			struct drm_plane *plane = crtc->primary;
2392 
2393 			if (plane->state->fb == &framebuffer->base)
2394 				units[num_units++] = vmw_crtc_to_du(crtc);
2395 		}
2396 	}
2397 
2398 	for (k = 0; k < num_units; k++) {
2399 		struct vmw_display_unit *unit = units[k];
2400 		s32 crtc_x = unit->crtc.x;
2401 		s32 crtc_y = unit->crtc.y;
2402 		s32 crtc_width = unit->crtc.mode.hdisplay;
2403 		s32 crtc_height = unit->crtc.mode.vdisplay;
2404 		const struct drm_clip_rect *clips_ptr = clips;
2405 		const struct drm_vmw_rect *vclips_ptr = vclips;
2406 
2407 		dirty->unit = unit;
2408 		if (dirty->fifo_reserve_size > 0) {
2409 			dirty->cmd = VMW_CMD_RESERVE(dev_priv,
2410 						      dirty->fifo_reserve_size);
2411 			if (!dirty->cmd)
2412 				return -ENOMEM;
2413 
2414 			memset(dirty->cmd, 0, dirty->fifo_reserve_size);
2415 		}
2416 		dirty->num_hits = 0;
2417 		for (i = 0; i < num_clips; i++, clips_ptr += increment,
2418 		       vclips_ptr += increment) {
2419 			s32 clip_left;
2420 			s32 clip_top;
2421 
2422 			/*
2423 			 * Select clip array type. Note that integer type
2424 			 * in @clips is unsigned short, whereas in @vclips
2425 			 * it's 32-bit.
2426 			 */
2427 			if (clips) {
2428 				dirty->fb_x = (s32) clips_ptr->x1;
2429 				dirty->fb_y = (s32) clips_ptr->y1;
2430 				dirty->unit_x2 = (s32) clips_ptr->x2 + dest_x -
2431 					crtc_x;
2432 				dirty->unit_y2 = (s32) clips_ptr->y2 + dest_y -
2433 					crtc_y;
2434 			} else {
2435 				dirty->fb_x = vclips_ptr->x;
2436 				dirty->fb_y = vclips_ptr->y;
2437 				dirty->unit_x2 = dirty->fb_x + vclips_ptr->w +
2438 					dest_x - crtc_x;
2439 				dirty->unit_y2 = dirty->fb_y + vclips_ptr->h +
2440 					dest_y - crtc_y;
2441 			}
2442 
2443 			dirty->unit_x1 = dirty->fb_x + dest_x - crtc_x;
2444 			dirty->unit_y1 = dirty->fb_y + dest_y - crtc_y;
2445 
2446 			/* Skip this clip if it's outside the crtc region */
2447 			if (dirty->unit_x1 >= crtc_width ||
2448 			    dirty->unit_y1 >= crtc_height ||
2449 			    dirty->unit_x2 <= 0 || dirty->unit_y2 <= 0)
2450 				continue;
2451 
2452 			/* Clip right and bottom to crtc limits */
2453 			dirty->unit_x2 = min_t(s32, dirty->unit_x2,
2454 					       crtc_width);
2455 			dirty->unit_y2 = min_t(s32, dirty->unit_y2,
2456 					       crtc_height);
2457 
2458 			/* Clip left and top to crtc limits */
2459 			clip_left = min_t(s32, dirty->unit_x1, 0);
2460 			clip_top = min_t(s32, dirty->unit_y1, 0);
2461 			dirty->unit_x1 -= clip_left;
2462 			dirty->unit_y1 -= clip_top;
2463 			dirty->fb_x -= clip_left;
2464 			dirty->fb_y -= clip_top;
2465 
2466 			dirty->clip(dirty);
2467 		}
2468 
2469 		dirty->fifo_commit(dirty);
2470 	}
2471 
2472 	return 0;
2473 }
2474 
2475 /**
2476  * vmw_kms_helper_validation_finish - Helper for post KMS command submission
2477  * cleanup and fencing
2478  * @dev_priv: Pointer to the device-private struct
2479  * @file_priv: Pointer identifying the client when user-space fencing is used
2480  * @ctx: Pointer to the validation context
2481  * @out_fence: If non-NULL, returned refcounted fence-pointer
2482  * @user_fence_rep: If non-NULL, pointer to user-space address area
2483  * in which to copy user-space fence info
2484  */
2485 void vmw_kms_helper_validation_finish(struct vmw_private *dev_priv,
2486 				      struct drm_file *file_priv,
2487 				      struct vmw_validation_context *ctx,
2488 				      struct vmw_fence_obj **out_fence,
2489 				      struct drm_vmw_fence_rep __user *
2490 				      user_fence_rep)
2491 {
2492 	struct vmw_fence_obj *fence = NULL;
2493 	uint32_t handle = 0;
2494 	int ret = 0;
2495 
2496 	if (file_priv || user_fence_rep || vmw_validation_has_bos(ctx) ||
2497 	    out_fence)
2498 		ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
2499 						 file_priv ? &handle : NULL);
2500 	vmw_validation_done(ctx, fence);
2501 	if (file_priv)
2502 		vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv),
2503 					    ret, user_fence_rep, fence,
2504 					    handle, -1, NULL);
2505 	if (out_fence)
2506 		*out_fence = fence;
2507 	else
2508 		vmw_fence_obj_unreference(&fence);
2509 }
2510 
2511 /**
2512  * vmw_kms_update_proxy - Helper function to update a proxy surface from
2513  * its backing MOB.
2514  *
2515  * @res: Pointer to the surface resource
2516  * @clips: Clip rects in framebuffer (surface) space.
2517  * @num_clips: Number of clips in @clips.
2518  * @increment: Integer with which to increment the clip counter when looping.
2519  * Used to skip a predetermined number of clip rects.
2520  *
2521  * This function makes sure the proxy surface is updated from its backing MOB
2522  * using the region given by @clips. The surface resource @res and its backing
2523  * MOB needs to be reserved and validated on call.
2524  */
2525 int vmw_kms_update_proxy(struct vmw_resource *res,
2526 			 const struct drm_clip_rect *clips,
2527 			 unsigned num_clips,
2528 			 int increment)
2529 {
2530 	struct vmw_private *dev_priv = res->dev_priv;
2531 	struct drm_vmw_size *size = &vmw_res_to_srf(res)->metadata.base_size;
2532 	struct {
2533 		SVGA3dCmdHeader header;
2534 		SVGA3dCmdUpdateGBImage body;
2535 	} *cmd;
2536 	SVGA3dBox *box;
2537 	size_t copy_size = 0;
2538 	int i;
2539 
2540 	if (!clips)
2541 		return 0;
2542 
2543 	cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd) * num_clips);
2544 	if (!cmd)
2545 		return -ENOMEM;
2546 
2547 	for (i = 0; i < num_clips; ++i, clips += increment, ++cmd) {
2548 		box = &cmd->body.box;
2549 
2550 		cmd->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
2551 		cmd->header.size = sizeof(cmd->body);
2552 		cmd->body.image.sid = res->id;
2553 		cmd->body.image.face = 0;
2554 		cmd->body.image.mipmap = 0;
2555 
2556 		if (clips->x1 > size->width || clips->x2 > size->width ||
2557 		    clips->y1 > size->height || clips->y2 > size->height) {
2558 			DRM_ERROR("Invalid clips outsize of framebuffer.\n");
2559 			return -EINVAL;
2560 		}
2561 
2562 		box->x = clips->x1;
2563 		box->y = clips->y1;
2564 		box->z = 0;
2565 		box->w = clips->x2 - clips->x1;
2566 		box->h = clips->y2 - clips->y1;
2567 		box->d = 1;
2568 
2569 		copy_size += sizeof(*cmd);
2570 	}
2571 
2572 	vmw_cmd_commit(dev_priv, copy_size);
2573 
2574 	return 0;
2575 }
2576 
2577 int vmw_kms_fbdev_init_data(struct vmw_private *dev_priv,
2578 			    unsigned unit,
2579 			    u32 max_width,
2580 			    u32 max_height,
2581 			    struct drm_connector **p_con,
2582 			    struct drm_crtc **p_crtc,
2583 			    struct drm_display_mode **p_mode)
2584 {
2585 	struct drm_connector *con;
2586 	struct vmw_display_unit *du;
2587 	struct drm_display_mode *mode;
2588 	int i = 0;
2589 	int ret = 0;
2590 
2591 	mutex_lock(&dev_priv->drm.mode_config.mutex);
2592 	list_for_each_entry(con, &dev_priv->drm.mode_config.connector_list,
2593 			    head) {
2594 		if (i == unit)
2595 			break;
2596 
2597 		++i;
2598 	}
2599 
2600 	if (&con->head == &dev_priv->drm.mode_config.connector_list) {
2601 		DRM_ERROR("Could not find initial display unit.\n");
2602 		ret = -EINVAL;
2603 		goto out_unlock;
2604 	}
2605 
2606 	if (list_empty(&con->modes))
2607 		(void) vmw_du_connector_fill_modes(con, max_width, max_height);
2608 
2609 	if (list_empty(&con->modes)) {
2610 		DRM_ERROR("Could not find initial display mode.\n");
2611 		ret = -EINVAL;
2612 		goto out_unlock;
2613 	}
2614 
2615 	du = vmw_connector_to_du(con);
2616 	*p_con = con;
2617 	*p_crtc = &du->crtc;
2618 
2619 	list_for_each_entry(mode, &con->modes, head) {
2620 		if (mode->type & DRM_MODE_TYPE_PREFERRED)
2621 			break;
2622 	}
2623 
2624 	if (&mode->head == &con->modes) {
2625 		WARN_ONCE(true, "Could not find initial preferred mode.\n");
2626 		*p_mode = list_first_entry(&con->modes,
2627 					   struct drm_display_mode,
2628 					   head);
2629 	} else {
2630 		*p_mode = mode;
2631 	}
2632 
2633  out_unlock:
2634 	mutex_unlock(&dev_priv->drm.mode_config.mutex);
2635 
2636 	return ret;
2637 }
2638 
2639 /**
2640  * vmw_kms_create_implicit_placement_property - Set up the implicit placement
2641  * property.
2642  *
2643  * @dev_priv: Pointer to a device private struct.
2644  *
2645  * Sets up the implicit placement property unless it's already set up.
2646  */
2647 void
2648 vmw_kms_create_implicit_placement_property(struct vmw_private *dev_priv)
2649 {
2650 	if (dev_priv->implicit_placement_property)
2651 		return;
2652 
2653 	dev_priv->implicit_placement_property =
2654 		drm_property_create_range(&dev_priv->drm,
2655 					  DRM_MODE_PROP_IMMUTABLE,
2656 					  "implicit_placement", 0, 1);
2657 }
2658 
2659 /**
2660  * vmw_kms_suspend - Save modesetting state and turn modesetting off.
2661  *
2662  * @dev: Pointer to the drm device
2663  * Return: 0 on success. Negative error code on failure.
2664  */
2665 int vmw_kms_suspend(struct drm_device *dev)
2666 {
2667 	struct vmw_private *dev_priv = vmw_priv(dev);
2668 
2669 	dev_priv->suspend_state = drm_atomic_helper_suspend(dev);
2670 	if (IS_ERR(dev_priv->suspend_state)) {
2671 		int ret = PTR_ERR(dev_priv->suspend_state);
2672 
2673 		DRM_ERROR("Failed kms suspend: %d\n", ret);
2674 		dev_priv->suspend_state = NULL;
2675 
2676 		return ret;
2677 	}
2678 
2679 	return 0;
2680 }
2681 
2682 
2683 /**
2684  * vmw_kms_resume - Re-enable modesetting and restore state
2685  *
2686  * @dev: Pointer to the drm device
2687  * Return: 0 on success. Negative error code on failure.
2688  *
2689  * State is resumed from a previous vmw_kms_suspend(). It's illegal
2690  * to call this function without a previous vmw_kms_suspend().
2691  */
2692 int vmw_kms_resume(struct drm_device *dev)
2693 {
2694 	struct vmw_private *dev_priv = vmw_priv(dev);
2695 	int ret;
2696 
2697 	if (WARN_ON(!dev_priv->suspend_state))
2698 		return 0;
2699 
2700 	ret = drm_atomic_helper_resume(dev, dev_priv->suspend_state);
2701 	dev_priv->suspend_state = NULL;
2702 
2703 	return ret;
2704 }
2705 
2706 /**
2707  * vmw_kms_lost_device - Notify kms that modesetting capabilities will be lost
2708  *
2709  * @dev: Pointer to the drm device
2710  */
2711 void vmw_kms_lost_device(struct drm_device *dev)
2712 {
2713 	drm_atomic_helper_shutdown(dev);
2714 }
2715 
2716 /**
2717  * vmw_du_helper_plane_update - Helper to do plane update on a display unit.
2718  * @update: The closure structure.
2719  *
2720  * Call this helper after setting callbacks in &vmw_du_update_plane to do plane
2721  * update on display unit.
2722  *
2723  * Return: 0 on success or a negative error code on failure.
2724  */
2725 int vmw_du_helper_plane_update(struct vmw_du_update_plane *update)
2726 {
2727 	struct drm_plane_state *state = update->plane->state;
2728 	struct drm_plane_state *old_state = update->old_state;
2729 	struct drm_atomic_helper_damage_iter iter;
2730 	struct drm_rect clip;
2731 	struct drm_rect bb;
2732 	DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
2733 	uint32_t reserved_size = 0;
2734 	uint32_t submit_size = 0;
2735 	uint32_t curr_size = 0;
2736 	uint32_t num_hits = 0;
2737 	void *cmd_start;
2738 	char *cmd_next;
2739 	int ret;
2740 
2741 	/*
2742 	 * Iterate in advance to check if really need plane update and find the
2743 	 * number of clips that actually are in plane src for fifo allocation.
2744 	 */
2745 	drm_atomic_helper_damage_iter_init(&iter, old_state, state);
2746 	drm_atomic_for_each_plane_damage(&iter, &clip)
2747 		num_hits++;
2748 
2749 	if (num_hits == 0)
2750 		return 0;
2751 
2752 	if (update->vfb->bo) {
2753 		struct vmw_framebuffer_bo *vfbbo =
2754 			container_of(update->vfb, typeof(*vfbbo), base);
2755 
2756 		ret = vmw_validation_add_bo(&val_ctx, vfbbo->buffer, false,
2757 					    update->cpu_blit);
2758 	} else {
2759 		struct vmw_framebuffer_surface *vfbs =
2760 			container_of(update->vfb, typeof(*vfbs), base);
2761 
2762 		ret = vmw_validation_add_resource(&val_ctx, &vfbs->surface->res,
2763 						  0, VMW_RES_DIRTY_NONE, NULL,
2764 						  NULL);
2765 	}
2766 
2767 	if (ret)
2768 		return ret;
2769 
2770 	ret = vmw_validation_prepare(&val_ctx, update->mutex, update->intr);
2771 	if (ret)
2772 		goto out_unref;
2773 
2774 	reserved_size = update->calc_fifo_size(update, num_hits);
2775 	cmd_start = VMW_CMD_RESERVE(update->dev_priv, reserved_size);
2776 	if (!cmd_start) {
2777 		ret = -ENOMEM;
2778 		goto out_revert;
2779 	}
2780 
2781 	cmd_next = cmd_start;
2782 
2783 	if (update->post_prepare) {
2784 		curr_size = update->post_prepare(update, cmd_next);
2785 		cmd_next += curr_size;
2786 		submit_size += curr_size;
2787 	}
2788 
2789 	if (update->pre_clip) {
2790 		curr_size = update->pre_clip(update, cmd_next, num_hits);
2791 		cmd_next += curr_size;
2792 		submit_size += curr_size;
2793 	}
2794 
2795 	bb.x1 = INT_MAX;
2796 	bb.y1 = INT_MAX;
2797 	bb.x2 = INT_MIN;
2798 	bb.y2 = INT_MIN;
2799 
2800 	drm_atomic_helper_damage_iter_init(&iter, old_state, state);
2801 	drm_atomic_for_each_plane_damage(&iter, &clip) {
2802 		uint32_t fb_x = clip.x1;
2803 		uint32_t fb_y = clip.y1;
2804 
2805 		vmw_du_translate_to_crtc(state, &clip);
2806 		if (update->clip) {
2807 			curr_size = update->clip(update, cmd_next, &clip, fb_x,
2808 						 fb_y);
2809 			cmd_next += curr_size;
2810 			submit_size += curr_size;
2811 		}
2812 		bb.x1 = min_t(int, bb.x1, clip.x1);
2813 		bb.y1 = min_t(int, bb.y1, clip.y1);
2814 		bb.x2 = max_t(int, bb.x2, clip.x2);
2815 		bb.y2 = max_t(int, bb.y2, clip.y2);
2816 	}
2817 
2818 	curr_size = update->post_clip(update, cmd_next, &bb);
2819 	submit_size += curr_size;
2820 
2821 	if (reserved_size < submit_size)
2822 		submit_size = 0;
2823 
2824 	vmw_cmd_commit(update->dev_priv, submit_size);
2825 
2826 	vmw_kms_helper_validation_finish(update->dev_priv, NULL, &val_ctx,
2827 					 update->out_fence, NULL);
2828 	return ret;
2829 
2830 out_revert:
2831 	vmw_validation_revert(&val_ctx);
2832 
2833 out_unref:
2834 	vmw_validation_unref_lists(&val_ctx);
2835 	return ret;
2836 }
2837