1 /**************************************************************************
2  *
3  * Copyright © 2009 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 
30 
31 /* Might need a hrtimer here? */
32 #define VMWGFX_PRESENT_RATE ((HZ / 60 > 0) ? HZ / 60 : 1)
33 
34 
35 struct vmw_clip_rect {
36 	int x1, x2, y1, y2;
37 };
38 
39 /**
40  * Clip @num_rects number of @rects against @clip storing the
41  * results in @out_rects and the number of passed rects in @out_num.
42  */
43 static void vmw_clip_cliprects(struct drm_clip_rect *rects,
44 			int num_rects,
45 			struct vmw_clip_rect clip,
46 			SVGASignedRect *out_rects,
47 			int *out_num)
48 {
49 	int i, k;
50 
51 	for (i = 0, k = 0; i < num_rects; i++) {
52 		int x1 = max_t(int, clip.x1, rects[i].x1);
53 		int y1 = max_t(int, clip.y1, rects[i].y1);
54 		int x2 = min_t(int, clip.x2, rects[i].x2);
55 		int y2 = min_t(int, clip.y2, rects[i].y2);
56 
57 		if (x1 >= x2)
58 			continue;
59 		if (y1 >= y2)
60 			continue;
61 
62 		out_rects[k].left   = x1;
63 		out_rects[k].top    = y1;
64 		out_rects[k].right  = x2;
65 		out_rects[k].bottom = y2;
66 		k++;
67 	}
68 
69 	*out_num = k;
70 }
71 
72 void vmw_display_unit_cleanup(struct vmw_display_unit *du)
73 {
74 	if (du->cursor_surface)
75 		vmw_surface_unreference(&du->cursor_surface);
76 	if (du->cursor_dmabuf)
77 		vmw_dmabuf_unreference(&du->cursor_dmabuf);
78 	drm_connector_unregister(&du->connector);
79 	drm_crtc_cleanup(&du->crtc);
80 	drm_encoder_cleanup(&du->encoder);
81 	drm_connector_cleanup(&du->connector);
82 }
83 
84 /*
85  * Display Unit Cursor functions
86  */
87 
88 int vmw_cursor_update_image(struct vmw_private *dev_priv,
89 			    u32 *image, u32 width, u32 height,
90 			    u32 hotspotX, u32 hotspotY)
91 {
92 	struct {
93 		u32 cmd;
94 		SVGAFifoCmdDefineAlphaCursor cursor;
95 	} *cmd;
96 	u32 image_size = width * height * 4;
97 	u32 cmd_size = sizeof(*cmd) + image_size;
98 
99 	if (!image)
100 		return -EINVAL;
101 
102 	cmd = vmw_fifo_reserve(dev_priv, cmd_size);
103 	if (unlikely(cmd == NULL)) {
104 		DRM_ERROR("Fifo reserve failed.\n");
105 		return -ENOMEM;
106 	}
107 
108 	memset(cmd, 0, sizeof(*cmd));
109 
110 	memcpy(&cmd[1], image, image_size);
111 
112 	cmd->cmd = cpu_to_le32(SVGA_CMD_DEFINE_ALPHA_CURSOR);
113 	cmd->cursor.id = cpu_to_le32(0);
114 	cmd->cursor.width = cpu_to_le32(width);
115 	cmd->cursor.height = cpu_to_le32(height);
116 	cmd->cursor.hotspotX = cpu_to_le32(hotspotX);
117 	cmd->cursor.hotspotY = cpu_to_le32(hotspotY);
118 
119 	vmw_fifo_commit(dev_priv, cmd_size);
120 
121 	return 0;
122 }
123 
124 int vmw_cursor_update_dmabuf(struct vmw_private *dev_priv,
125 			     struct vmw_dma_buffer *dmabuf,
126 			     u32 width, u32 height,
127 			     u32 hotspotX, u32 hotspotY)
128 {
129 	struct ttm_bo_kmap_obj map;
130 	unsigned long kmap_offset;
131 	unsigned long kmap_num;
132 	void *virtual;
133 	bool dummy;
134 	int ret;
135 
136 	kmap_offset = 0;
137 	kmap_num = (width*height*4 + PAGE_SIZE - 1) >> PAGE_SHIFT;
138 
139 	ret = ttm_bo_reserve(&dmabuf->base, true, false, false, NULL);
140 	if (unlikely(ret != 0)) {
141 		DRM_ERROR("reserve failed\n");
142 		return -EINVAL;
143 	}
144 
145 	ret = ttm_bo_kmap(&dmabuf->base, kmap_offset, kmap_num, &map);
146 	if (unlikely(ret != 0))
147 		goto err_unreserve;
148 
149 	virtual = ttm_kmap_obj_virtual(&map, &dummy);
150 	ret = vmw_cursor_update_image(dev_priv, virtual, width, height,
151 				      hotspotX, hotspotY);
152 
153 	ttm_bo_kunmap(&map);
154 err_unreserve:
155 	ttm_bo_unreserve(&dmabuf->base);
156 
157 	return ret;
158 }
159 
160 
161 void vmw_cursor_update_position(struct vmw_private *dev_priv,
162 				bool show, int x, int y)
163 {
164 	__le32 __iomem *fifo_mem = dev_priv->mmio_virt;
165 	uint32_t count;
166 
167 	iowrite32(show ? 1 : 0, fifo_mem + SVGA_FIFO_CURSOR_ON);
168 	iowrite32(x, fifo_mem + SVGA_FIFO_CURSOR_X);
169 	iowrite32(y, fifo_mem + SVGA_FIFO_CURSOR_Y);
170 	count = ioread32(fifo_mem + SVGA_FIFO_CURSOR_COUNT);
171 	iowrite32(++count, fifo_mem + SVGA_FIFO_CURSOR_COUNT);
172 }
173 
174 int vmw_du_crtc_cursor_set(struct drm_crtc *crtc, struct drm_file *file_priv,
175 			   uint32_t handle, uint32_t width, uint32_t height)
176 {
177 	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
178 	struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
179 	struct vmw_surface *surface = NULL;
180 	struct vmw_dma_buffer *dmabuf = NULL;
181 	int ret;
182 
183 	/*
184 	 * FIXME: Unclear whether there's any global state touched by the
185 	 * cursor_set function, especially vmw_cursor_update_position looks
186 	 * suspicious. For now take the easy route and reacquire all locks. We
187 	 * can do this since the caller in the drm core doesn't check anything
188 	 * which is protected by any looks.
189 	 */
190 	drm_modeset_unlock_crtc(crtc);
191 	drm_modeset_lock_all(dev_priv->dev);
192 
193 	/* A lot of the code assumes this */
194 	if (handle && (width != 64 || height != 64)) {
195 		ret = -EINVAL;
196 		goto out;
197 	}
198 
199 	if (handle) {
200 		struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
201 
202 		ret = vmw_user_lookup_handle(dev_priv, tfile,
203 					     handle, &surface, &dmabuf);
204 		if (ret) {
205 			DRM_ERROR("failed to find surface or dmabuf: %i\n", ret);
206 			ret = -EINVAL;
207 			goto out;
208 		}
209 	}
210 
211 	/* need to do this before taking down old image */
212 	if (surface && !surface->snooper.image) {
213 		DRM_ERROR("surface not suitable for cursor\n");
214 		vmw_surface_unreference(&surface);
215 		ret = -EINVAL;
216 		goto out;
217 	}
218 
219 	/* takedown old cursor */
220 	if (du->cursor_surface) {
221 		du->cursor_surface->snooper.crtc = NULL;
222 		vmw_surface_unreference(&du->cursor_surface);
223 	}
224 	if (du->cursor_dmabuf)
225 		vmw_dmabuf_unreference(&du->cursor_dmabuf);
226 
227 	/* setup new image */
228 	if (surface) {
229 		/* vmw_user_surface_lookup takes one reference */
230 		du->cursor_surface = surface;
231 
232 		du->cursor_surface->snooper.crtc = crtc;
233 		du->cursor_age = du->cursor_surface->snooper.age;
234 		vmw_cursor_update_image(dev_priv, surface->snooper.image,
235 					64, 64, du->hotspot_x, du->hotspot_y);
236 	} else if (dmabuf) {
237 		/* vmw_user_surface_lookup takes one reference */
238 		du->cursor_dmabuf = dmabuf;
239 
240 		ret = vmw_cursor_update_dmabuf(dev_priv, dmabuf, width, height,
241 					       du->hotspot_x, du->hotspot_y);
242 	} else {
243 		vmw_cursor_update_position(dev_priv, false, 0, 0);
244 		ret = 0;
245 		goto out;
246 	}
247 
248 	vmw_cursor_update_position(dev_priv, true,
249 				   du->cursor_x + du->hotspot_x,
250 				   du->cursor_y + du->hotspot_y);
251 
252 	ret = 0;
253 out:
254 	drm_modeset_unlock_all(dev_priv->dev);
255 	drm_modeset_lock_crtc(crtc, crtc->cursor);
256 
257 	return ret;
258 }
259 
260 int vmw_du_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
261 {
262 	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
263 	struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
264 	bool shown = du->cursor_surface || du->cursor_dmabuf ? true : false;
265 
266 	du->cursor_x = x + crtc->x;
267 	du->cursor_y = y + crtc->y;
268 
269 	/*
270 	 * FIXME: Unclear whether there's any global state touched by the
271 	 * cursor_set function, especially vmw_cursor_update_position looks
272 	 * suspicious. For now take the easy route and reacquire all locks. We
273 	 * can do this since the caller in the drm core doesn't check anything
274 	 * which is protected by any looks.
275 	 */
276 	drm_modeset_unlock_crtc(crtc);
277 	drm_modeset_lock_all(dev_priv->dev);
278 
279 	vmw_cursor_update_position(dev_priv, shown,
280 				   du->cursor_x + du->hotspot_x,
281 				   du->cursor_y + du->hotspot_y);
282 
283 	drm_modeset_unlock_all(dev_priv->dev);
284 	drm_modeset_lock_crtc(crtc, crtc->cursor);
285 
286 	return 0;
287 }
288 
289 void vmw_kms_cursor_snoop(struct vmw_surface *srf,
290 			  struct ttm_object_file *tfile,
291 			  struct ttm_buffer_object *bo,
292 			  SVGA3dCmdHeader *header)
293 {
294 	struct ttm_bo_kmap_obj map;
295 	unsigned long kmap_offset;
296 	unsigned long kmap_num;
297 	SVGA3dCopyBox *box;
298 	unsigned box_count;
299 	void *virtual;
300 	bool dummy;
301 	struct vmw_dma_cmd {
302 		SVGA3dCmdHeader header;
303 		SVGA3dCmdSurfaceDMA dma;
304 	} *cmd;
305 	int i, ret;
306 
307 	cmd = container_of(header, struct vmw_dma_cmd, header);
308 
309 	/* No snooper installed */
310 	if (!srf->snooper.image)
311 		return;
312 
313 	if (cmd->dma.host.face != 0 || cmd->dma.host.mipmap != 0) {
314 		DRM_ERROR("face and mipmap for cursors should never != 0\n");
315 		return;
316 	}
317 
318 	if (cmd->header.size < 64) {
319 		DRM_ERROR("at least one full copy box must be given\n");
320 		return;
321 	}
322 
323 	box = (SVGA3dCopyBox *)&cmd[1];
324 	box_count = (cmd->header.size - sizeof(SVGA3dCmdSurfaceDMA)) /
325 			sizeof(SVGA3dCopyBox);
326 
327 	if (cmd->dma.guest.ptr.offset % PAGE_SIZE ||
328 	    box->x != 0    || box->y != 0    || box->z != 0    ||
329 	    box->srcx != 0 || box->srcy != 0 || box->srcz != 0 ||
330 	    box->d != 1    || box_count != 1) {
331 		/* TODO handle none page aligned offsets */
332 		/* TODO handle more dst & src != 0 */
333 		/* TODO handle more then one copy */
334 		DRM_ERROR("Cant snoop dma request for cursor!\n");
335 		DRM_ERROR("(%u, %u, %u) (%u, %u, %u) (%ux%ux%u) %u %u\n",
336 			  box->srcx, box->srcy, box->srcz,
337 			  box->x, box->y, box->z,
338 			  box->w, box->h, box->d, box_count,
339 			  cmd->dma.guest.ptr.offset);
340 		return;
341 	}
342 
343 	kmap_offset = cmd->dma.guest.ptr.offset >> PAGE_SHIFT;
344 	kmap_num = (64*64*4) >> PAGE_SHIFT;
345 
346 	ret = ttm_bo_reserve(bo, true, false, false, NULL);
347 	if (unlikely(ret != 0)) {
348 		DRM_ERROR("reserve failed\n");
349 		return;
350 	}
351 
352 	ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
353 	if (unlikely(ret != 0))
354 		goto err_unreserve;
355 
356 	virtual = ttm_kmap_obj_virtual(&map, &dummy);
357 
358 	if (box->w == 64 && cmd->dma.guest.pitch == 64*4) {
359 		memcpy(srf->snooper.image, virtual, 64*64*4);
360 	} else {
361 		/* Image is unsigned pointer. */
362 		for (i = 0; i < box->h; i++)
363 			memcpy(srf->snooper.image + i * 64,
364 			       virtual + i * cmd->dma.guest.pitch,
365 			       box->w * 4);
366 	}
367 
368 	srf->snooper.age++;
369 
370 	/* we can't call this function from this function since execbuf has
371 	 * reserved fifo space.
372 	 *
373 	 * if (srf->snooper.crtc)
374 	 *	vmw_ldu_crtc_cursor_update_image(dev_priv,
375 	 *					 srf->snooper.image, 64, 64,
376 	 *					 du->hotspot_x, du->hotspot_y);
377 	 */
378 
379 	ttm_bo_kunmap(&map);
380 err_unreserve:
381 	ttm_bo_unreserve(bo);
382 }
383 
384 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
385 {
386 	struct drm_device *dev = dev_priv->dev;
387 	struct vmw_display_unit *du;
388 	struct drm_crtc *crtc;
389 
390 	mutex_lock(&dev->mode_config.mutex);
391 
392 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
393 		du = vmw_crtc_to_du(crtc);
394 		if (!du->cursor_surface ||
395 		    du->cursor_age == du->cursor_surface->snooper.age)
396 			continue;
397 
398 		du->cursor_age = du->cursor_surface->snooper.age;
399 		vmw_cursor_update_image(dev_priv,
400 					du->cursor_surface->snooper.image,
401 					64, 64, du->hotspot_x, du->hotspot_y);
402 	}
403 
404 	mutex_unlock(&dev->mode_config.mutex);
405 }
406 
407 /*
408  * Generic framebuffer code
409  */
410 
411 /*
412  * Surface framebuffer code
413  */
414 
415 #define vmw_framebuffer_to_vfbs(x) \
416 	container_of(x, struct vmw_framebuffer_surface, base.base)
417 
418 struct vmw_framebuffer_surface {
419 	struct vmw_framebuffer base;
420 	struct vmw_surface *surface;
421 	struct vmw_dma_buffer *buffer;
422 	struct list_head head;
423 	struct drm_master *master;
424 };
425 
426 static void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
427 {
428 	struct vmw_framebuffer_surface *vfbs =
429 		vmw_framebuffer_to_vfbs(framebuffer);
430 	struct vmw_master *vmaster = vmw_master(vfbs->master);
431 
432 
433 	mutex_lock(&vmaster->fb_surf_mutex);
434 	list_del(&vfbs->head);
435 	mutex_unlock(&vmaster->fb_surf_mutex);
436 
437 	drm_master_put(&vfbs->master);
438 	drm_framebuffer_cleanup(framebuffer);
439 	vmw_surface_unreference(&vfbs->surface);
440 	ttm_base_object_unref(&vfbs->base.user_obj);
441 
442 	kfree(vfbs);
443 }
444 
445 static int do_surface_dirty_sou(struct vmw_private *dev_priv,
446 				struct drm_file *file_priv,
447 				struct vmw_framebuffer *framebuffer,
448 				unsigned flags, unsigned color,
449 				struct drm_clip_rect *clips,
450 				unsigned num_clips, int inc,
451 				struct vmw_fence_obj **out_fence)
452 {
453 	struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
454 	struct drm_clip_rect *clips_ptr;
455 	struct drm_clip_rect *tmp;
456 	struct drm_crtc *crtc;
457 	size_t fifo_size;
458 	int i, num_units;
459 	int ret = 0; /* silence warning */
460 	int left, right, top, bottom;
461 
462 	struct {
463 		SVGA3dCmdHeader header;
464 		SVGA3dCmdBlitSurfaceToScreen body;
465 	} *cmd;
466 	SVGASignedRect *blits;
467 
468 	num_units = 0;
469 	list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list,
470 			    head) {
471 		if (crtc->primary->fb != &framebuffer->base)
472 			continue;
473 		units[num_units++] = vmw_crtc_to_du(crtc);
474 	}
475 
476 	BUG_ON(!clips || !num_clips);
477 
478 	tmp = kzalloc(sizeof(*tmp) * num_clips, GFP_KERNEL);
479 	if (unlikely(tmp == NULL)) {
480 		DRM_ERROR("Temporary cliprect memory alloc failed.\n");
481 		return -ENOMEM;
482 	}
483 
484 	fifo_size = sizeof(*cmd) + sizeof(SVGASignedRect) * num_clips;
485 	cmd = kzalloc(fifo_size, GFP_KERNEL);
486 	if (unlikely(cmd == NULL)) {
487 		DRM_ERROR("Temporary fifo memory alloc failed.\n");
488 		ret = -ENOMEM;
489 		goto out_free_tmp;
490 	}
491 
492 	/* setup blits pointer */
493 	blits = (SVGASignedRect *)&cmd[1];
494 
495 	/* initial clip region */
496 	left = clips->x1;
497 	right = clips->x2;
498 	top = clips->y1;
499 	bottom = clips->y2;
500 
501 	/* skip the first clip rect */
502 	for (i = 1, clips_ptr = clips + inc;
503 	     i < num_clips; i++, clips_ptr += inc) {
504 		left = min_t(int, left, (int)clips_ptr->x1);
505 		right = max_t(int, right, (int)clips_ptr->x2);
506 		top = min_t(int, top, (int)clips_ptr->y1);
507 		bottom = max_t(int, bottom, (int)clips_ptr->y2);
508 	}
509 
510 	/* only need to do this once */
511 	cmd->header.id = cpu_to_le32(SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN);
512 	cmd->header.size = cpu_to_le32(fifo_size - sizeof(cmd->header));
513 
514 	cmd->body.srcRect.left = left;
515 	cmd->body.srcRect.right = right;
516 	cmd->body.srcRect.top = top;
517 	cmd->body.srcRect.bottom = bottom;
518 
519 	clips_ptr = clips;
520 	for (i = 0; i < num_clips; i++, clips_ptr += inc) {
521 		tmp[i].x1 = clips_ptr->x1 - left;
522 		tmp[i].x2 = clips_ptr->x2 - left;
523 		tmp[i].y1 = clips_ptr->y1 - top;
524 		tmp[i].y2 = clips_ptr->y2 - top;
525 	}
526 
527 	/* do per unit writing, reuse fifo for each */
528 	for (i = 0; i < num_units; i++) {
529 		struct vmw_display_unit *unit = units[i];
530 		struct vmw_clip_rect clip;
531 		int num;
532 
533 		clip.x1 = left - unit->crtc.x;
534 		clip.y1 = top - unit->crtc.y;
535 		clip.x2 = right - unit->crtc.x;
536 		clip.y2 = bottom - unit->crtc.y;
537 
538 		/* skip any crtcs that misses the clip region */
539 		if (clip.x1 >= unit->crtc.mode.hdisplay ||
540 		    clip.y1 >= unit->crtc.mode.vdisplay ||
541 		    clip.x2 <= 0 || clip.y2 <= 0)
542 			continue;
543 
544 		/*
545 		 * In order for the clip rects to be correctly scaled
546 		 * the src and dest rects needs to be the same size.
547 		 */
548 		cmd->body.destRect.left = clip.x1;
549 		cmd->body.destRect.right = clip.x2;
550 		cmd->body.destRect.top = clip.y1;
551 		cmd->body.destRect.bottom = clip.y2;
552 
553 		/* create a clip rect of the crtc in dest coords */
554 		clip.x2 = unit->crtc.mode.hdisplay - clip.x1;
555 		clip.y2 = unit->crtc.mode.vdisplay - clip.y1;
556 		clip.x1 = 0 - clip.x1;
557 		clip.y1 = 0 - clip.y1;
558 
559 		/* need to reset sid as it is changed by execbuf */
560 		cmd->body.srcImage.sid = cpu_to_le32(framebuffer->user_handle);
561 		cmd->body.destScreenId = unit->unit;
562 
563 		/* clip and write blits to cmd stream */
564 		vmw_clip_cliprects(tmp, num_clips, clip, blits, &num);
565 
566 		/* if no cliprects hit skip this */
567 		if (num == 0)
568 			continue;
569 
570 		/* only return the last fence */
571 		if (out_fence && *out_fence)
572 			vmw_fence_obj_unreference(out_fence);
573 
574 		/* recalculate package length */
575 		fifo_size = sizeof(*cmd) + sizeof(SVGASignedRect) * num;
576 		cmd->header.size = cpu_to_le32(fifo_size - sizeof(cmd->header));
577 		ret = vmw_execbuf_process(file_priv, dev_priv, NULL, cmd,
578 					  fifo_size, 0, NULL, out_fence);
579 
580 		if (unlikely(ret != 0))
581 			break;
582 	}
583 
584 
585 	kfree(cmd);
586 out_free_tmp:
587 	kfree(tmp);
588 
589 	return ret;
590 }
591 
592 static int vmw_framebuffer_surface_dirty(struct drm_framebuffer *framebuffer,
593 				  struct drm_file *file_priv,
594 				  unsigned flags, unsigned color,
595 				  struct drm_clip_rect *clips,
596 				  unsigned num_clips)
597 {
598 	struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
599 	struct vmw_framebuffer_surface *vfbs =
600 		vmw_framebuffer_to_vfbs(framebuffer);
601 	struct drm_clip_rect norect;
602 	int ret, inc = 1;
603 
604 	if (unlikely(vfbs->master != file_priv->master))
605 		return -EINVAL;
606 
607 	/* Require ScreenObject support for 3D */
608 	if (!dev_priv->sou_priv)
609 		return -EINVAL;
610 
611 	drm_modeset_lock_all(dev_priv->dev);
612 
613 	ret = ttm_read_lock(&dev_priv->reservation_sem, true);
614 	if (unlikely(ret != 0)) {
615 		drm_modeset_unlock_all(dev_priv->dev);
616 		return ret;
617 	}
618 
619 	if (!num_clips) {
620 		num_clips = 1;
621 		clips = &norect;
622 		norect.x1 = norect.y1 = 0;
623 		norect.x2 = framebuffer->width;
624 		norect.y2 = framebuffer->height;
625 	} else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
626 		num_clips /= 2;
627 		inc = 2; /* skip source rects */
628 	}
629 
630 	ret = do_surface_dirty_sou(dev_priv, file_priv, &vfbs->base,
631 				   flags, color,
632 				   clips, num_clips, inc, NULL);
633 
634 	ttm_read_unlock(&dev_priv->reservation_sem);
635 
636 	drm_modeset_unlock_all(dev_priv->dev);
637 
638 	return 0;
639 }
640 
641 static struct drm_framebuffer_funcs vmw_framebuffer_surface_funcs = {
642 	.destroy = vmw_framebuffer_surface_destroy,
643 	.dirty = vmw_framebuffer_surface_dirty,
644 };
645 
646 static int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
647 					   struct drm_file *file_priv,
648 					   struct vmw_surface *surface,
649 					   struct vmw_framebuffer **out,
650 					   const struct drm_mode_fb_cmd
651 					   *mode_cmd)
652 
653 {
654 	struct drm_device *dev = dev_priv->dev;
655 	struct vmw_framebuffer_surface *vfbs;
656 	enum SVGA3dSurfaceFormat format;
657 	struct vmw_master *vmaster = vmw_master(file_priv->master);
658 	int ret;
659 
660 	/* 3D is only supported on HWv8 hosts which supports screen objects */
661 	if (!dev_priv->sou_priv)
662 		return -ENOSYS;
663 
664 	/*
665 	 * Sanity checks.
666 	 */
667 
668 	/* Surface must be marked as a scanout. */
669 	if (unlikely(!surface->scanout))
670 		return -EINVAL;
671 
672 	if (unlikely(surface->mip_levels[0] != 1 ||
673 		     surface->num_sizes != 1 ||
674 		     surface->base_size.width < mode_cmd->width ||
675 		     surface->base_size.height < mode_cmd->height ||
676 		     surface->base_size.depth != 1)) {
677 		DRM_ERROR("Incompatible surface dimensions "
678 			  "for requested mode.\n");
679 		return -EINVAL;
680 	}
681 
682 	switch (mode_cmd->depth) {
683 	case 32:
684 		format = SVGA3D_A8R8G8B8;
685 		break;
686 	case 24:
687 		format = SVGA3D_X8R8G8B8;
688 		break;
689 	case 16:
690 		format = SVGA3D_R5G6B5;
691 		break;
692 	case 15:
693 		format = SVGA3D_A1R5G5B5;
694 		break;
695 	case 8:
696 		format = SVGA3D_LUMINANCE8;
697 		break;
698 	default:
699 		DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
700 		return -EINVAL;
701 	}
702 
703 	if (unlikely(format != surface->format)) {
704 		DRM_ERROR("Invalid surface format for requested mode.\n");
705 		return -EINVAL;
706 	}
707 
708 	vfbs = kzalloc(sizeof(*vfbs), GFP_KERNEL);
709 	if (!vfbs) {
710 		ret = -ENOMEM;
711 		goto out_err1;
712 	}
713 
714 	if (!vmw_surface_reference(surface)) {
715 		DRM_ERROR("failed to reference surface %p\n", surface);
716 		ret = -EINVAL;
717 		goto out_err2;
718 	}
719 
720 	/* XXX get the first 3 from the surface info */
721 	vfbs->base.base.bits_per_pixel = mode_cmd->bpp;
722 	vfbs->base.base.pitches[0] = mode_cmd->pitch;
723 	vfbs->base.base.depth = mode_cmd->depth;
724 	vfbs->base.base.width = mode_cmd->width;
725 	vfbs->base.base.height = mode_cmd->height;
726 	vfbs->surface = surface;
727 	vfbs->base.user_handle = mode_cmd->handle;
728 	vfbs->master = drm_master_get(file_priv->master);
729 
730 	mutex_lock(&vmaster->fb_surf_mutex);
731 	list_add_tail(&vfbs->head, &vmaster->fb_surf);
732 	mutex_unlock(&vmaster->fb_surf_mutex);
733 
734 	*out = &vfbs->base;
735 
736 	ret = drm_framebuffer_init(dev, &vfbs->base.base,
737 				   &vmw_framebuffer_surface_funcs);
738 	if (ret)
739 		goto out_err3;
740 
741 	return 0;
742 
743 out_err3:
744 	vmw_surface_unreference(&surface);
745 out_err2:
746 	kfree(vfbs);
747 out_err1:
748 	return ret;
749 }
750 
751 /*
752  * Dmabuf framebuffer code
753  */
754 
755 #define vmw_framebuffer_to_vfbd(x) \
756 	container_of(x, struct vmw_framebuffer_dmabuf, base.base)
757 
758 struct vmw_framebuffer_dmabuf {
759 	struct vmw_framebuffer base;
760 	struct vmw_dma_buffer *buffer;
761 };
762 
763 static void vmw_framebuffer_dmabuf_destroy(struct drm_framebuffer *framebuffer)
764 {
765 	struct vmw_framebuffer_dmabuf *vfbd =
766 		vmw_framebuffer_to_vfbd(framebuffer);
767 
768 	drm_framebuffer_cleanup(framebuffer);
769 	vmw_dmabuf_unreference(&vfbd->buffer);
770 	ttm_base_object_unref(&vfbd->base.user_obj);
771 
772 	kfree(vfbd);
773 }
774 
775 static int do_dmabuf_dirty_ldu(struct vmw_private *dev_priv,
776 			       struct vmw_framebuffer *framebuffer,
777 			       unsigned flags, unsigned color,
778 			       struct drm_clip_rect *clips,
779 			       unsigned num_clips, int increment)
780 {
781 	size_t fifo_size;
782 	int i;
783 
784 	struct {
785 		uint32_t header;
786 		SVGAFifoCmdUpdate body;
787 	} *cmd;
788 
789 	fifo_size = sizeof(*cmd) * num_clips;
790 	cmd = vmw_fifo_reserve(dev_priv, fifo_size);
791 	if (unlikely(cmd == NULL)) {
792 		DRM_ERROR("Fifo reserve failed.\n");
793 		return -ENOMEM;
794 	}
795 
796 	memset(cmd, 0, fifo_size);
797 	for (i = 0; i < num_clips; i++, clips += increment) {
798 		cmd[i].header = cpu_to_le32(SVGA_CMD_UPDATE);
799 		cmd[i].body.x = cpu_to_le32(clips->x1);
800 		cmd[i].body.y = cpu_to_le32(clips->y1);
801 		cmd[i].body.width = cpu_to_le32(clips->x2 - clips->x1);
802 		cmd[i].body.height = cpu_to_le32(clips->y2 - clips->y1);
803 	}
804 
805 	vmw_fifo_commit(dev_priv, fifo_size);
806 	return 0;
807 }
808 
809 static int do_dmabuf_define_gmrfb(struct drm_file *file_priv,
810 				  struct vmw_private *dev_priv,
811 				  struct vmw_framebuffer *framebuffer)
812 {
813 	int depth = framebuffer->base.depth;
814 	size_t fifo_size;
815 	int ret;
816 
817 	struct {
818 		uint32_t header;
819 		SVGAFifoCmdDefineGMRFB body;
820 	} *cmd;
821 
822 	/* Emulate RGBA support, contrary to svga_reg.h this is not
823 	 * supported by hosts. This is only a problem if we are reading
824 	 * this value later and expecting what we uploaded back.
825 	 */
826 	if (depth == 32)
827 		depth = 24;
828 
829 	fifo_size = sizeof(*cmd);
830 	cmd = kmalloc(fifo_size, GFP_KERNEL);
831 	if (unlikely(cmd == NULL)) {
832 		DRM_ERROR("Failed to allocate temporary cmd buffer.\n");
833 		return -ENOMEM;
834 	}
835 
836 	memset(cmd, 0, fifo_size);
837 	cmd->header = SVGA_CMD_DEFINE_GMRFB;
838 	cmd->body.format.bitsPerPixel = framebuffer->base.bits_per_pixel;
839 	cmd->body.format.colorDepth = depth;
840 	cmd->body.format.reserved = 0;
841 	cmd->body.bytesPerLine = framebuffer->base.pitches[0];
842 	cmd->body.ptr.gmrId = framebuffer->user_handle;
843 	cmd->body.ptr.offset = 0;
844 
845 	ret = vmw_execbuf_process(file_priv, dev_priv, NULL, cmd,
846 				  fifo_size, 0, NULL, NULL);
847 
848 	kfree(cmd);
849 
850 	return ret;
851 }
852 
853 static int do_dmabuf_dirty_sou(struct drm_file *file_priv,
854 			       struct vmw_private *dev_priv,
855 			       struct vmw_framebuffer *framebuffer,
856 			       unsigned flags, unsigned color,
857 			       struct drm_clip_rect *clips,
858 			       unsigned num_clips, int increment,
859 			       struct vmw_fence_obj **out_fence)
860 {
861 	struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
862 	struct drm_clip_rect *clips_ptr;
863 	int i, k, num_units, ret;
864 	struct drm_crtc *crtc;
865 	size_t fifo_size;
866 
867 	struct {
868 		uint32_t header;
869 		SVGAFifoCmdBlitGMRFBToScreen body;
870 	} *blits;
871 
872 	ret = do_dmabuf_define_gmrfb(file_priv, dev_priv, framebuffer);
873 	if (unlikely(ret != 0))
874 		return ret; /* define_gmrfb prints warnings */
875 
876 	fifo_size = sizeof(*blits) * num_clips;
877 	blits = kmalloc(fifo_size, GFP_KERNEL);
878 	if (unlikely(blits == NULL)) {
879 		DRM_ERROR("Failed to allocate temporary cmd buffer.\n");
880 		return -ENOMEM;
881 	}
882 
883 	num_units = 0;
884 	list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
885 		if (crtc->primary->fb != &framebuffer->base)
886 			continue;
887 		units[num_units++] = vmw_crtc_to_du(crtc);
888 	}
889 
890 	for (k = 0; k < num_units; k++) {
891 		struct vmw_display_unit *unit = units[k];
892 		int hit_num = 0;
893 
894 		clips_ptr = clips;
895 		for (i = 0; i < num_clips; i++, clips_ptr += increment) {
896 			int clip_x1 = clips_ptr->x1 - unit->crtc.x;
897 			int clip_y1 = clips_ptr->y1 - unit->crtc.y;
898 			int clip_x2 = clips_ptr->x2 - unit->crtc.x;
899 			int clip_y2 = clips_ptr->y2 - unit->crtc.y;
900 			int move_x, move_y;
901 
902 			/* skip any crtcs that misses the clip region */
903 			if (clip_x1 >= unit->crtc.mode.hdisplay ||
904 			    clip_y1 >= unit->crtc.mode.vdisplay ||
905 			    clip_x2 <= 0 || clip_y2 <= 0)
906 				continue;
907 
908 			/* clip size to crtc size */
909 			clip_x2 = min_t(int, clip_x2, unit->crtc.mode.hdisplay);
910 			clip_y2 = min_t(int, clip_y2, unit->crtc.mode.vdisplay);
911 
912 			/* translate both src and dest to bring clip into screen */
913 			move_x = min_t(int, clip_x1, 0);
914 			move_y = min_t(int, clip_y1, 0);
915 
916 			/* actual translate done here */
917 			blits[hit_num].header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN;
918 			blits[hit_num].body.destScreenId = unit->unit;
919 			blits[hit_num].body.srcOrigin.x = clips_ptr->x1 - move_x;
920 			blits[hit_num].body.srcOrigin.y = clips_ptr->y1 - move_y;
921 			blits[hit_num].body.destRect.left = clip_x1 - move_x;
922 			blits[hit_num].body.destRect.top = clip_y1 - move_y;
923 			blits[hit_num].body.destRect.right = clip_x2;
924 			blits[hit_num].body.destRect.bottom = clip_y2;
925 			hit_num++;
926 		}
927 
928 		/* no clips hit the crtc */
929 		if (hit_num == 0)
930 			continue;
931 
932 		/* only return the last fence */
933 		if (out_fence && *out_fence)
934 			vmw_fence_obj_unreference(out_fence);
935 
936 		fifo_size = sizeof(*blits) * hit_num;
937 		ret = vmw_execbuf_process(file_priv, dev_priv, NULL, blits,
938 					  fifo_size, 0, NULL, out_fence);
939 
940 		if (unlikely(ret != 0))
941 			break;
942 	}
943 
944 	kfree(blits);
945 
946 	return ret;
947 }
948 
949 static int vmw_framebuffer_dmabuf_dirty(struct drm_framebuffer *framebuffer,
950 				 struct drm_file *file_priv,
951 				 unsigned flags, unsigned color,
952 				 struct drm_clip_rect *clips,
953 				 unsigned num_clips)
954 {
955 	struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
956 	struct vmw_framebuffer_dmabuf *vfbd =
957 		vmw_framebuffer_to_vfbd(framebuffer);
958 	struct drm_clip_rect norect;
959 	int ret, increment = 1;
960 
961 	drm_modeset_lock_all(dev_priv->dev);
962 
963 	ret = ttm_read_lock(&dev_priv->reservation_sem, true);
964 	if (unlikely(ret != 0)) {
965 		drm_modeset_unlock_all(dev_priv->dev);
966 		return ret;
967 	}
968 
969 	if (!num_clips) {
970 		num_clips = 1;
971 		clips = &norect;
972 		norect.x1 = norect.y1 = 0;
973 		norect.x2 = framebuffer->width;
974 		norect.y2 = framebuffer->height;
975 	} else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
976 		num_clips /= 2;
977 		increment = 2;
978 	}
979 
980 	if (dev_priv->ldu_priv) {
981 		ret = do_dmabuf_dirty_ldu(dev_priv, &vfbd->base,
982 					  flags, color,
983 					  clips, num_clips, increment);
984 	} else {
985 		ret = do_dmabuf_dirty_sou(file_priv, dev_priv, &vfbd->base,
986 					  flags, color,
987 					  clips, num_clips, increment, NULL);
988 	}
989 
990 	ttm_read_unlock(&dev_priv->reservation_sem);
991 
992 	drm_modeset_unlock_all(dev_priv->dev);
993 
994 	return ret;
995 }
996 
997 static struct drm_framebuffer_funcs vmw_framebuffer_dmabuf_funcs = {
998 	.destroy = vmw_framebuffer_dmabuf_destroy,
999 	.dirty = vmw_framebuffer_dmabuf_dirty,
1000 };
1001 
1002 /**
1003  * Pin the dmabuffer to the start of vram.
1004  */
1005 static int vmw_framebuffer_dmabuf_pin(struct vmw_framebuffer *vfb)
1006 {
1007 	struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
1008 	struct vmw_framebuffer_dmabuf *vfbd =
1009 		vmw_framebuffer_to_vfbd(&vfb->base);
1010 	int ret;
1011 
1012 	/* This code should not be used with screen objects */
1013 	BUG_ON(dev_priv->sou_priv);
1014 
1015 	vmw_overlay_pause_all(dev_priv);
1016 
1017 	ret = vmw_dmabuf_to_start_of_vram(dev_priv, vfbd->buffer, true, false);
1018 
1019 	vmw_overlay_resume_all(dev_priv);
1020 
1021 	WARN_ON(ret != 0);
1022 
1023 	return 0;
1024 }
1025 
1026 static int vmw_framebuffer_dmabuf_unpin(struct vmw_framebuffer *vfb)
1027 {
1028 	struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
1029 	struct vmw_framebuffer_dmabuf *vfbd =
1030 		vmw_framebuffer_to_vfbd(&vfb->base);
1031 
1032 	if (!vfbd->buffer) {
1033 		WARN_ON(!vfbd->buffer);
1034 		return 0;
1035 	}
1036 
1037 	return vmw_dmabuf_unpin(dev_priv, vfbd->buffer, false);
1038 }
1039 
1040 static int vmw_kms_new_framebuffer_dmabuf(struct vmw_private *dev_priv,
1041 					  struct vmw_dma_buffer *dmabuf,
1042 					  struct vmw_framebuffer **out,
1043 					  const struct drm_mode_fb_cmd
1044 					  *mode_cmd)
1045 
1046 {
1047 	struct drm_device *dev = dev_priv->dev;
1048 	struct vmw_framebuffer_dmabuf *vfbd;
1049 	unsigned int requested_size;
1050 	int ret;
1051 
1052 	requested_size = mode_cmd->height * mode_cmd->pitch;
1053 	if (unlikely(requested_size > dmabuf->base.num_pages * PAGE_SIZE)) {
1054 		DRM_ERROR("Screen buffer object size is too small "
1055 			  "for requested mode.\n");
1056 		return -EINVAL;
1057 	}
1058 
1059 	/* Limited framebuffer color depth support for screen objects */
1060 	if (dev_priv->sou_priv) {
1061 		switch (mode_cmd->depth) {
1062 		case 32:
1063 		case 24:
1064 			/* Only support 32 bpp for 32 and 24 depth fbs */
1065 			if (mode_cmd->bpp == 32)
1066 				break;
1067 
1068 			DRM_ERROR("Invalid color depth/bbp: %d %d\n",
1069 				  mode_cmd->depth, mode_cmd->bpp);
1070 			return -EINVAL;
1071 		case 16:
1072 		case 15:
1073 			/* Only support 16 bpp for 16 and 15 depth fbs */
1074 			if (mode_cmd->bpp == 16)
1075 				break;
1076 
1077 			DRM_ERROR("Invalid color depth/bbp: %d %d\n",
1078 				  mode_cmd->depth, mode_cmd->bpp);
1079 			return -EINVAL;
1080 		default:
1081 			DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
1082 			return -EINVAL;
1083 		}
1084 	}
1085 
1086 	vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
1087 	if (!vfbd) {
1088 		ret = -ENOMEM;
1089 		goto out_err1;
1090 	}
1091 
1092 	if (!vmw_dmabuf_reference(dmabuf)) {
1093 		DRM_ERROR("failed to reference dmabuf %p\n", dmabuf);
1094 		ret = -EINVAL;
1095 		goto out_err2;
1096 	}
1097 
1098 	vfbd->base.base.bits_per_pixel = mode_cmd->bpp;
1099 	vfbd->base.base.pitches[0] = mode_cmd->pitch;
1100 	vfbd->base.base.depth = mode_cmd->depth;
1101 	vfbd->base.base.width = mode_cmd->width;
1102 	vfbd->base.base.height = mode_cmd->height;
1103 	if (!dev_priv->sou_priv) {
1104 		vfbd->base.pin = vmw_framebuffer_dmabuf_pin;
1105 		vfbd->base.unpin = vmw_framebuffer_dmabuf_unpin;
1106 	}
1107 	vfbd->base.dmabuf = true;
1108 	vfbd->buffer = dmabuf;
1109 	vfbd->base.user_handle = mode_cmd->handle;
1110 	*out = &vfbd->base;
1111 
1112 	ret = drm_framebuffer_init(dev, &vfbd->base.base,
1113 				   &vmw_framebuffer_dmabuf_funcs);
1114 	if (ret)
1115 		goto out_err3;
1116 
1117 	return 0;
1118 
1119 out_err3:
1120 	vmw_dmabuf_unreference(&dmabuf);
1121 out_err2:
1122 	kfree(vfbd);
1123 out_err1:
1124 	return ret;
1125 }
1126 
1127 /*
1128  * Generic Kernel modesetting functions
1129  */
1130 
1131 static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
1132 						 struct drm_file *file_priv,
1133 						 struct drm_mode_fb_cmd2 *mode_cmd2)
1134 {
1135 	struct vmw_private *dev_priv = vmw_priv(dev);
1136 	struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1137 	struct vmw_framebuffer *vfb = NULL;
1138 	struct vmw_surface *surface = NULL;
1139 	struct vmw_dma_buffer *bo = NULL;
1140 	struct ttm_base_object *user_obj;
1141 	struct drm_mode_fb_cmd mode_cmd;
1142 	int ret;
1143 
1144 	mode_cmd.width = mode_cmd2->width;
1145 	mode_cmd.height = mode_cmd2->height;
1146 	mode_cmd.pitch = mode_cmd2->pitches[0];
1147 	mode_cmd.handle = mode_cmd2->handles[0];
1148 	drm_fb_get_bpp_depth(mode_cmd2->pixel_format, &mode_cmd.depth,
1149 				    &mode_cmd.bpp);
1150 
1151 	/**
1152 	 * This code should be conditioned on Screen Objects not being used.
1153 	 * If screen objects are used, we can allocate a GMR to hold the
1154 	 * requested framebuffer.
1155 	 */
1156 
1157 	if (!vmw_kms_validate_mode_vram(dev_priv,
1158 					mode_cmd.pitch,
1159 					mode_cmd.height)) {
1160 		DRM_ERROR("VRAM size is too small for requested mode.\n");
1161 		return ERR_PTR(-ENOMEM);
1162 	}
1163 
1164 	/*
1165 	 * Take a reference on the user object of the resource
1166 	 * backing the kms fb. This ensures that user-space handle
1167 	 * lookups on that resource will always work as long as
1168 	 * it's registered with a kms framebuffer. This is important,
1169 	 * since vmw_execbuf_process identifies resources in the
1170 	 * command stream using user-space handles.
1171 	 */
1172 
1173 	user_obj = ttm_base_object_lookup(tfile, mode_cmd.handle);
1174 	if (unlikely(user_obj == NULL)) {
1175 		DRM_ERROR("Could not locate requested kms frame buffer.\n");
1176 		return ERR_PTR(-ENOENT);
1177 	}
1178 
1179 	/**
1180 	 * End conditioned code.
1181 	 */
1182 
1183 	/* returns either a dmabuf or surface */
1184 	ret = vmw_user_lookup_handle(dev_priv, tfile,
1185 				     mode_cmd.handle,
1186 				     &surface, &bo);
1187 	if (ret)
1188 		goto err_out;
1189 
1190 	/* Create the new framebuffer depending one what we got back */
1191 	if (bo)
1192 		ret = vmw_kms_new_framebuffer_dmabuf(dev_priv, bo, &vfb,
1193 						     &mode_cmd);
1194 	else if (surface)
1195 		ret = vmw_kms_new_framebuffer_surface(dev_priv, file_priv,
1196 						      surface, &vfb, &mode_cmd);
1197 	else
1198 		BUG();
1199 
1200 err_out:
1201 	/* vmw_user_lookup_handle takes one ref so does new_fb */
1202 	if (bo)
1203 		vmw_dmabuf_unreference(&bo);
1204 	if (surface)
1205 		vmw_surface_unreference(&surface);
1206 
1207 	if (ret) {
1208 		DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
1209 		ttm_base_object_unref(&user_obj);
1210 		return ERR_PTR(ret);
1211 	} else
1212 		vfb->user_obj = user_obj;
1213 
1214 	return &vfb->base;
1215 }
1216 
1217 static const struct drm_mode_config_funcs vmw_kms_funcs = {
1218 	.fb_create = vmw_kms_fb_create,
1219 };
1220 
1221 int vmw_kms_present(struct vmw_private *dev_priv,
1222 		    struct drm_file *file_priv,
1223 		    struct vmw_framebuffer *vfb,
1224 		    struct vmw_surface *surface,
1225 		    uint32_t sid,
1226 		    int32_t destX, int32_t destY,
1227 		    struct drm_vmw_rect *clips,
1228 		    uint32_t num_clips)
1229 {
1230 	struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
1231 	struct drm_clip_rect *tmp;
1232 	struct drm_crtc *crtc;
1233 	size_t fifo_size;
1234 	int i, k, num_units;
1235 	int ret = 0; /* silence warning */
1236 	int left, right, top, bottom;
1237 
1238 	struct {
1239 		SVGA3dCmdHeader header;
1240 		SVGA3dCmdBlitSurfaceToScreen body;
1241 	} *cmd;
1242 	SVGASignedRect *blits;
1243 
1244 	num_units = 0;
1245 	list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
1246 		if (crtc->primary->fb != &vfb->base)
1247 			continue;
1248 		units[num_units++] = vmw_crtc_to_du(crtc);
1249 	}
1250 
1251 	BUG_ON(surface == NULL);
1252 	BUG_ON(!clips || !num_clips);
1253 
1254 	tmp = kzalloc(sizeof(*tmp) * num_clips, GFP_KERNEL);
1255 	if (unlikely(tmp == NULL)) {
1256 		DRM_ERROR("Temporary cliprect memory alloc failed.\n");
1257 		return -ENOMEM;
1258 	}
1259 
1260 	fifo_size = sizeof(*cmd) + sizeof(SVGASignedRect) * num_clips;
1261 	cmd = kmalloc(fifo_size, GFP_KERNEL);
1262 	if (unlikely(cmd == NULL)) {
1263 		DRM_ERROR("Failed to allocate temporary fifo memory.\n");
1264 		ret = -ENOMEM;
1265 		goto out_free_tmp;
1266 	}
1267 
1268 	left = clips->x;
1269 	right = clips->x + clips->w;
1270 	top = clips->y;
1271 	bottom = clips->y + clips->h;
1272 
1273 	for (i = 1; i < num_clips; i++) {
1274 		left = min_t(int, left, (int)clips[i].x);
1275 		right = max_t(int, right, (int)clips[i].x + clips[i].w);
1276 		top = min_t(int, top, (int)clips[i].y);
1277 		bottom = max_t(int, bottom, (int)clips[i].y + clips[i].h);
1278 	}
1279 
1280 	/* only need to do this once */
1281 	memset(cmd, 0, fifo_size);
1282 	cmd->header.id = cpu_to_le32(SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN);
1283 
1284 	blits = (SVGASignedRect *)&cmd[1];
1285 
1286 	cmd->body.srcRect.left = left;
1287 	cmd->body.srcRect.right = right;
1288 	cmd->body.srcRect.top = top;
1289 	cmd->body.srcRect.bottom = bottom;
1290 
1291 	for (i = 0; i < num_clips; i++) {
1292 		tmp[i].x1 = clips[i].x - left;
1293 		tmp[i].x2 = clips[i].x + clips[i].w - left;
1294 		tmp[i].y1 = clips[i].y - top;
1295 		tmp[i].y2 = clips[i].y + clips[i].h - top;
1296 	}
1297 
1298 	for (k = 0; k < num_units; k++) {
1299 		struct vmw_display_unit *unit = units[k];
1300 		struct vmw_clip_rect clip;
1301 		int num;
1302 
1303 		clip.x1 = left + destX - unit->crtc.x;
1304 		clip.y1 = top + destY - unit->crtc.y;
1305 		clip.x2 = right + destX - unit->crtc.x;
1306 		clip.y2 = bottom + destY - unit->crtc.y;
1307 
1308 		/* skip any crtcs that misses the clip region */
1309 		if (clip.x1 >= unit->crtc.mode.hdisplay ||
1310 		    clip.y1 >= unit->crtc.mode.vdisplay ||
1311 		    clip.x2 <= 0 || clip.y2 <= 0)
1312 			continue;
1313 
1314 		/*
1315 		 * In order for the clip rects to be correctly scaled
1316 		 * the src and dest rects needs to be the same size.
1317 		 */
1318 		cmd->body.destRect.left = clip.x1;
1319 		cmd->body.destRect.right = clip.x2;
1320 		cmd->body.destRect.top = clip.y1;
1321 		cmd->body.destRect.bottom = clip.y2;
1322 
1323 		/* create a clip rect of the crtc in dest coords */
1324 		clip.x2 = unit->crtc.mode.hdisplay - clip.x1;
1325 		clip.y2 = unit->crtc.mode.vdisplay - clip.y1;
1326 		clip.x1 = 0 - clip.x1;
1327 		clip.y1 = 0 - clip.y1;
1328 
1329 		/* need to reset sid as it is changed by execbuf */
1330 		cmd->body.srcImage.sid = sid;
1331 		cmd->body.destScreenId = unit->unit;
1332 
1333 		/* clip and write blits to cmd stream */
1334 		vmw_clip_cliprects(tmp, num_clips, clip, blits, &num);
1335 
1336 		/* if no cliprects hit skip this */
1337 		if (num == 0)
1338 			continue;
1339 
1340 		/* recalculate package length */
1341 		fifo_size = sizeof(*cmd) + sizeof(SVGASignedRect) * num;
1342 		cmd->header.size = cpu_to_le32(fifo_size - sizeof(cmd->header));
1343 		ret = vmw_execbuf_process(file_priv, dev_priv, NULL, cmd,
1344 					  fifo_size, 0, NULL, NULL);
1345 
1346 		if (unlikely(ret != 0))
1347 			break;
1348 	}
1349 
1350 	kfree(cmd);
1351 out_free_tmp:
1352 	kfree(tmp);
1353 
1354 	return ret;
1355 }
1356 
1357 int vmw_kms_readback(struct vmw_private *dev_priv,
1358 		     struct drm_file *file_priv,
1359 		     struct vmw_framebuffer *vfb,
1360 		     struct drm_vmw_fence_rep __user *user_fence_rep,
1361 		     struct drm_vmw_rect *clips,
1362 		     uint32_t num_clips)
1363 {
1364 	struct vmw_framebuffer_dmabuf *vfbd =
1365 		vmw_framebuffer_to_vfbd(&vfb->base);
1366 	struct vmw_dma_buffer *dmabuf = vfbd->buffer;
1367 	struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
1368 	struct drm_crtc *crtc;
1369 	size_t fifo_size;
1370 	int i, k, ret, num_units, blits_pos;
1371 
1372 	struct {
1373 		uint32_t header;
1374 		SVGAFifoCmdDefineGMRFB body;
1375 	} *cmd;
1376 	struct {
1377 		uint32_t header;
1378 		SVGAFifoCmdBlitScreenToGMRFB body;
1379 	} *blits;
1380 
1381 	num_units = 0;
1382 	list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
1383 		if (crtc->primary->fb != &vfb->base)
1384 			continue;
1385 		units[num_units++] = vmw_crtc_to_du(crtc);
1386 	}
1387 
1388 	BUG_ON(dmabuf == NULL);
1389 	BUG_ON(!clips || !num_clips);
1390 
1391 	/* take a safe guess at fifo size */
1392 	fifo_size = sizeof(*cmd) + sizeof(*blits) * num_clips * num_units;
1393 	cmd = kmalloc(fifo_size, GFP_KERNEL);
1394 	if (unlikely(cmd == NULL)) {
1395 		DRM_ERROR("Failed to allocate temporary fifo memory.\n");
1396 		return -ENOMEM;
1397 	}
1398 
1399 	memset(cmd, 0, fifo_size);
1400 	cmd->header = SVGA_CMD_DEFINE_GMRFB;
1401 	cmd->body.format.bitsPerPixel = vfb->base.bits_per_pixel;
1402 	cmd->body.format.colorDepth = vfb->base.depth;
1403 	cmd->body.format.reserved = 0;
1404 	cmd->body.bytesPerLine = vfb->base.pitches[0];
1405 	cmd->body.ptr.gmrId = vfb->user_handle;
1406 	cmd->body.ptr.offset = 0;
1407 
1408 	blits = (void *)&cmd[1];
1409 	blits_pos = 0;
1410 	for (i = 0; i < num_units; i++) {
1411 		struct drm_vmw_rect *c = clips;
1412 		for (k = 0; k < num_clips; k++, c++) {
1413 			/* transform clip coords to crtc origin based coords */
1414 			int clip_x1 = c->x - units[i]->crtc.x;
1415 			int clip_x2 = c->x - units[i]->crtc.x + c->w;
1416 			int clip_y1 = c->y - units[i]->crtc.y;
1417 			int clip_y2 = c->y - units[i]->crtc.y + c->h;
1418 			int dest_x = c->x;
1419 			int dest_y = c->y;
1420 
1421 			/* compensate for clipping, we negate
1422 			 * a negative number and add that.
1423 			 */
1424 			if (clip_x1 < 0)
1425 				dest_x += -clip_x1;
1426 			if (clip_y1 < 0)
1427 				dest_y += -clip_y1;
1428 
1429 			/* clip */
1430 			clip_x1 = max(clip_x1, 0);
1431 			clip_y1 = max(clip_y1, 0);
1432 			clip_x2 = min(clip_x2, units[i]->crtc.mode.hdisplay);
1433 			clip_y2 = min(clip_y2, units[i]->crtc.mode.vdisplay);
1434 
1435 			/* and cull any rects that misses the crtc */
1436 			if (clip_x1 >= units[i]->crtc.mode.hdisplay ||
1437 			    clip_y1 >= units[i]->crtc.mode.vdisplay ||
1438 			    clip_x2 <= 0 || clip_y2 <= 0)
1439 				continue;
1440 
1441 			blits[blits_pos].header = SVGA_CMD_BLIT_SCREEN_TO_GMRFB;
1442 			blits[blits_pos].body.srcScreenId = units[i]->unit;
1443 			blits[blits_pos].body.destOrigin.x = dest_x;
1444 			blits[blits_pos].body.destOrigin.y = dest_y;
1445 
1446 			blits[blits_pos].body.srcRect.left = clip_x1;
1447 			blits[blits_pos].body.srcRect.top = clip_y1;
1448 			blits[blits_pos].body.srcRect.right = clip_x2;
1449 			blits[blits_pos].body.srcRect.bottom = clip_y2;
1450 			blits_pos++;
1451 		}
1452 	}
1453 	/* reset size here and use calculated exact size from loops */
1454 	fifo_size = sizeof(*cmd) + sizeof(*blits) * blits_pos;
1455 
1456 	ret = vmw_execbuf_process(file_priv, dev_priv, NULL, cmd, fifo_size,
1457 				  0, user_fence_rep, NULL);
1458 
1459 	kfree(cmd);
1460 
1461 	return ret;
1462 }
1463 
1464 int vmw_kms_init(struct vmw_private *dev_priv)
1465 {
1466 	struct drm_device *dev = dev_priv->dev;
1467 	int ret;
1468 
1469 	drm_mode_config_init(dev);
1470 	dev->mode_config.funcs = &vmw_kms_funcs;
1471 	dev->mode_config.min_width = 1;
1472 	dev->mode_config.min_height = 1;
1473 	/* assumed largest fb size */
1474 	dev->mode_config.max_width = 8192;
1475 	dev->mode_config.max_height = 8192;
1476 
1477 	ret = vmw_kms_init_screen_object_display(dev_priv);
1478 	if (ret) /* Fallback */
1479 		(void)vmw_kms_init_legacy_display_system(dev_priv);
1480 
1481 	return 0;
1482 }
1483 
1484 int vmw_kms_close(struct vmw_private *dev_priv)
1485 {
1486 	/*
1487 	 * Docs says we should take the lock before calling this function
1488 	 * but since it destroys encoders and our destructor calls
1489 	 * drm_encoder_cleanup which takes the lock we deadlock.
1490 	 */
1491 	drm_mode_config_cleanup(dev_priv->dev);
1492 	if (dev_priv->sou_priv)
1493 		vmw_kms_close_screen_object_display(dev_priv);
1494 	else
1495 		vmw_kms_close_legacy_display_system(dev_priv);
1496 	return 0;
1497 }
1498 
1499 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
1500 				struct drm_file *file_priv)
1501 {
1502 	struct drm_vmw_cursor_bypass_arg *arg = data;
1503 	struct vmw_display_unit *du;
1504 	struct drm_crtc *crtc;
1505 	int ret = 0;
1506 
1507 
1508 	mutex_lock(&dev->mode_config.mutex);
1509 	if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
1510 
1511 		list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1512 			du = vmw_crtc_to_du(crtc);
1513 			du->hotspot_x = arg->xhot;
1514 			du->hotspot_y = arg->yhot;
1515 		}
1516 
1517 		mutex_unlock(&dev->mode_config.mutex);
1518 		return 0;
1519 	}
1520 
1521 	crtc = drm_crtc_find(dev, arg->crtc_id);
1522 	if (!crtc) {
1523 		ret = -ENOENT;
1524 		goto out;
1525 	}
1526 
1527 	du = vmw_crtc_to_du(crtc);
1528 
1529 	du->hotspot_x = arg->xhot;
1530 	du->hotspot_y = arg->yhot;
1531 
1532 out:
1533 	mutex_unlock(&dev->mode_config.mutex);
1534 
1535 	return ret;
1536 }
1537 
1538 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
1539 			unsigned width, unsigned height, unsigned pitch,
1540 			unsigned bpp, unsigned depth)
1541 {
1542 	if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1543 		vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
1544 	else if (vmw_fifo_have_pitchlock(vmw_priv))
1545 		iowrite32(pitch, vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1546 	vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
1547 	vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
1548 	vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bpp);
1549 
1550 	if (vmw_read(vmw_priv, SVGA_REG_DEPTH) != depth) {
1551 		DRM_ERROR("Invalid depth %u for %u bpp, host expects %u\n",
1552 			  depth, bpp, vmw_read(vmw_priv, SVGA_REG_DEPTH));
1553 		return -EINVAL;
1554 	}
1555 
1556 	return 0;
1557 }
1558 
1559 int vmw_kms_save_vga(struct vmw_private *vmw_priv)
1560 {
1561 	struct vmw_vga_topology_state *save;
1562 	uint32_t i;
1563 
1564 	vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
1565 	vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
1566 	vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
1567 	if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1568 		vmw_priv->vga_pitchlock =
1569 		  vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
1570 	else if (vmw_fifo_have_pitchlock(vmw_priv))
1571 		vmw_priv->vga_pitchlock = ioread32(vmw_priv->mmio_virt +
1572 						       SVGA_FIFO_PITCHLOCK);
1573 
1574 	if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1575 		return 0;
1576 
1577 	vmw_priv->num_displays = vmw_read(vmw_priv,
1578 					  SVGA_REG_NUM_GUEST_DISPLAYS);
1579 
1580 	if (vmw_priv->num_displays == 0)
1581 		vmw_priv->num_displays = 1;
1582 
1583 	for (i = 0; i < vmw_priv->num_displays; ++i) {
1584 		save = &vmw_priv->vga_save[i];
1585 		vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1586 		save->primary = vmw_read(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY);
1587 		save->pos_x = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_X);
1588 		save->pos_y = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y);
1589 		save->width = vmw_read(vmw_priv, SVGA_REG_DISPLAY_WIDTH);
1590 		save->height = vmw_read(vmw_priv, SVGA_REG_DISPLAY_HEIGHT);
1591 		vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1592 		if (i == 0 && vmw_priv->num_displays == 1 &&
1593 		    save->width == 0 && save->height == 0) {
1594 
1595 			/*
1596 			 * It should be fairly safe to assume that these
1597 			 * values are uninitialized.
1598 			 */
1599 
1600 			save->width = vmw_priv->vga_width - save->pos_x;
1601 			save->height = vmw_priv->vga_height - save->pos_y;
1602 		}
1603 	}
1604 
1605 	return 0;
1606 }
1607 
1608 int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
1609 {
1610 	struct vmw_vga_topology_state *save;
1611 	uint32_t i;
1612 
1613 	vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
1614 	vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
1615 	vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
1616 	if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1617 		vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
1618 			  vmw_priv->vga_pitchlock);
1619 	else if (vmw_fifo_have_pitchlock(vmw_priv))
1620 		iowrite32(vmw_priv->vga_pitchlock,
1621 			  vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1622 
1623 	if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1624 		return 0;
1625 
1626 	for (i = 0; i < vmw_priv->num_displays; ++i) {
1627 		save = &vmw_priv->vga_save[i];
1628 		vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1629 		vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, save->primary);
1630 		vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, save->pos_x);
1631 		vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, save->pos_y);
1632 		vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, save->width);
1633 		vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, save->height);
1634 		vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1635 	}
1636 
1637 	return 0;
1638 }
1639 
1640 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
1641 				uint32_t pitch,
1642 				uint32_t height)
1643 {
1644 	return ((u64) pitch * (u64) height) < (u64) dev_priv->prim_bb_mem;
1645 }
1646 
1647 
1648 /**
1649  * Function called by DRM code called with vbl_lock held.
1650  */
1651 u32 vmw_get_vblank_counter(struct drm_device *dev, int crtc)
1652 {
1653 	return 0;
1654 }
1655 
1656 /**
1657  * Function called by DRM code called with vbl_lock held.
1658  */
1659 int vmw_enable_vblank(struct drm_device *dev, int crtc)
1660 {
1661 	return -ENOSYS;
1662 }
1663 
1664 /**
1665  * Function called by DRM code called with vbl_lock held.
1666  */
1667 void vmw_disable_vblank(struct drm_device *dev, int crtc)
1668 {
1669 }
1670 
1671 
1672 /*
1673  * Small shared kms functions.
1674  */
1675 
1676 static int vmw_du_update_layout(struct vmw_private *dev_priv, unsigned num,
1677 			 struct drm_vmw_rect *rects)
1678 {
1679 	struct drm_device *dev = dev_priv->dev;
1680 	struct vmw_display_unit *du;
1681 	struct drm_connector *con;
1682 
1683 	mutex_lock(&dev->mode_config.mutex);
1684 
1685 #if 0
1686 	{
1687 		unsigned int i;
1688 
1689 		DRM_INFO("%s: new layout ", __func__);
1690 		for (i = 0; i < num; i++)
1691 			DRM_INFO("(%i, %i %ux%u) ", rects[i].x, rects[i].y,
1692 				 rects[i].w, rects[i].h);
1693 		DRM_INFO("\n");
1694 	}
1695 #endif
1696 
1697 	list_for_each_entry(con, &dev->mode_config.connector_list, head) {
1698 		du = vmw_connector_to_du(con);
1699 		if (num > du->unit) {
1700 			du->pref_width = rects[du->unit].w;
1701 			du->pref_height = rects[du->unit].h;
1702 			du->pref_active = true;
1703 			du->gui_x = rects[du->unit].x;
1704 			du->gui_y = rects[du->unit].y;
1705 		} else {
1706 			du->pref_width = 800;
1707 			du->pref_height = 600;
1708 			du->pref_active = false;
1709 		}
1710 		con->status = vmw_du_connector_detect(con, true);
1711 	}
1712 
1713 	mutex_unlock(&dev->mode_config.mutex);
1714 
1715 	return 0;
1716 }
1717 
1718 int vmw_du_page_flip(struct drm_crtc *crtc,
1719 		     struct drm_framebuffer *fb,
1720 		     struct drm_pending_vblank_event *event,
1721 		     uint32_t page_flip_flags)
1722 {
1723 	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
1724 	struct drm_framebuffer *old_fb = crtc->primary->fb;
1725 	struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(fb);
1726 	struct drm_file *file_priv ;
1727 	struct vmw_fence_obj *fence = NULL;
1728 	struct drm_clip_rect clips;
1729 	int ret;
1730 
1731 	if (event == NULL)
1732 		return -EINVAL;
1733 
1734 	/* require ScreenObject support for page flipping */
1735 	if (!dev_priv->sou_priv)
1736 		return -ENOSYS;
1737 
1738 	file_priv = event->base.file_priv;
1739 	if (!vmw_kms_screen_object_flippable(dev_priv, crtc))
1740 		return -EINVAL;
1741 
1742 	crtc->primary->fb = fb;
1743 
1744 	/* do a full screen dirty update */
1745 	clips.x1 = clips.y1 = 0;
1746 	clips.x2 = fb->width;
1747 	clips.y2 = fb->height;
1748 
1749 	if (vfb->dmabuf)
1750 		ret = do_dmabuf_dirty_sou(file_priv, dev_priv, vfb,
1751 					  0, 0, &clips, 1, 1, &fence);
1752 	else
1753 		ret = do_surface_dirty_sou(dev_priv, file_priv, vfb,
1754 					   0, 0, &clips, 1, 1, &fence);
1755 
1756 
1757 	if (ret != 0)
1758 		goto out_no_fence;
1759 	if (!fence) {
1760 		ret = -EINVAL;
1761 		goto out_no_fence;
1762 	}
1763 
1764 	ret = vmw_event_fence_action_queue(file_priv, fence,
1765 					   &event->base,
1766 					   &event->event.tv_sec,
1767 					   &event->event.tv_usec,
1768 					   true);
1769 
1770 	/*
1771 	 * No need to hold on to this now. The only cleanup
1772 	 * we need to do if we fail is unref the fence.
1773 	 */
1774 	vmw_fence_obj_unreference(&fence);
1775 
1776 	if (vmw_crtc_to_du(crtc)->is_implicit)
1777 		vmw_kms_screen_object_update_implicit_fb(dev_priv, crtc);
1778 
1779 	return ret;
1780 
1781 out_no_fence:
1782 	crtc->primary->fb = old_fb;
1783 	return ret;
1784 }
1785 
1786 
1787 void vmw_du_crtc_save(struct drm_crtc *crtc)
1788 {
1789 }
1790 
1791 void vmw_du_crtc_restore(struct drm_crtc *crtc)
1792 {
1793 }
1794 
1795 void vmw_du_crtc_gamma_set(struct drm_crtc *crtc,
1796 			   u16 *r, u16 *g, u16 *b,
1797 			   uint32_t start, uint32_t size)
1798 {
1799 	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
1800 	int i;
1801 
1802 	for (i = 0; i < size; i++) {
1803 		DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i,
1804 			  r[i], g[i], b[i]);
1805 		vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
1806 		vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
1807 		vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
1808 	}
1809 }
1810 
1811 void vmw_du_connector_dpms(struct drm_connector *connector, int mode)
1812 {
1813 }
1814 
1815 void vmw_du_connector_save(struct drm_connector *connector)
1816 {
1817 }
1818 
1819 void vmw_du_connector_restore(struct drm_connector *connector)
1820 {
1821 }
1822 
1823 enum drm_connector_status
1824 vmw_du_connector_detect(struct drm_connector *connector, bool force)
1825 {
1826 	uint32_t num_displays;
1827 	struct drm_device *dev = connector->dev;
1828 	struct vmw_private *dev_priv = vmw_priv(dev);
1829 	struct vmw_display_unit *du = vmw_connector_to_du(connector);
1830 
1831 	num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);
1832 
1833 	return ((vmw_connector_to_du(connector)->unit < num_displays &&
1834 		 du->pref_active) ?
1835 		connector_status_connected : connector_status_disconnected);
1836 }
1837 
1838 static struct drm_display_mode vmw_kms_connector_builtin[] = {
1839 	/* 640x480@60Hz */
1840 	{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
1841 		   752, 800, 0, 480, 489, 492, 525, 0,
1842 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1843 	/* 800x600@60Hz */
1844 	{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
1845 		   968, 1056, 0, 600, 601, 605, 628, 0,
1846 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1847 	/* 1024x768@60Hz */
1848 	{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
1849 		   1184, 1344, 0, 768, 771, 777, 806, 0,
1850 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
1851 	/* 1152x864@75Hz */
1852 	{ DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
1853 		   1344, 1600, 0, 864, 865, 868, 900, 0,
1854 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1855 	/* 1280x768@60Hz */
1856 	{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
1857 		   1472, 1664, 0, 768, 771, 778, 798, 0,
1858 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1859 	/* 1280x800@60Hz */
1860 	{ DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
1861 		   1480, 1680, 0, 800, 803, 809, 831, 0,
1862 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
1863 	/* 1280x960@60Hz */
1864 	{ DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
1865 		   1488, 1800, 0, 960, 961, 964, 1000, 0,
1866 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1867 	/* 1280x1024@60Hz */
1868 	{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
1869 		   1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
1870 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1871 	/* 1360x768@60Hz */
1872 	{ DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
1873 		   1536, 1792, 0, 768, 771, 777, 795, 0,
1874 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1875 	/* 1440x1050@60Hz */
1876 	{ DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
1877 		   1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
1878 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1879 	/* 1440x900@60Hz */
1880 	{ DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
1881 		   1672, 1904, 0, 900, 903, 909, 934, 0,
1882 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1883 	/* 1600x1200@60Hz */
1884 	{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
1885 		   1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
1886 		   DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1887 	/* 1680x1050@60Hz */
1888 	{ DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
1889 		   1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
1890 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1891 	/* 1792x1344@60Hz */
1892 	{ DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
1893 		   2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
1894 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1895 	/* 1853x1392@60Hz */
1896 	{ DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
1897 		   2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
1898 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1899 	/* 1920x1200@60Hz */
1900 	{ DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
1901 		   2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
1902 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1903 	/* 1920x1440@60Hz */
1904 	{ DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
1905 		   2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
1906 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1907 	/* 2560x1600@60Hz */
1908 	{ DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
1909 		   3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
1910 		   DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
1911 	/* Terminate */
1912 	{ DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
1913 };
1914 
1915 /**
1916  * vmw_guess_mode_timing - Provide fake timings for a
1917  * 60Hz vrefresh mode.
1918  *
1919  * @mode - Pointer to a struct drm_display_mode with hdisplay and vdisplay
1920  * members filled in.
1921  */
1922 static void vmw_guess_mode_timing(struct drm_display_mode *mode)
1923 {
1924 	mode->hsync_start = mode->hdisplay + 50;
1925 	mode->hsync_end = mode->hsync_start + 50;
1926 	mode->htotal = mode->hsync_end + 50;
1927 
1928 	mode->vsync_start = mode->vdisplay + 50;
1929 	mode->vsync_end = mode->vsync_start + 50;
1930 	mode->vtotal = mode->vsync_end + 50;
1931 
1932 	mode->clock = (u32)mode->htotal * (u32)mode->vtotal / 100 * 6;
1933 	mode->vrefresh = drm_mode_vrefresh(mode);
1934 }
1935 
1936 
1937 int vmw_du_connector_fill_modes(struct drm_connector *connector,
1938 				uint32_t max_width, uint32_t max_height)
1939 {
1940 	struct vmw_display_unit *du = vmw_connector_to_du(connector);
1941 	struct drm_device *dev = connector->dev;
1942 	struct vmw_private *dev_priv = vmw_priv(dev);
1943 	struct drm_display_mode *mode = NULL;
1944 	struct drm_display_mode *bmode;
1945 	struct drm_display_mode prefmode = { DRM_MODE("preferred",
1946 		DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
1947 		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1948 		DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
1949 	};
1950 	int i;
1951 	u32 assumed_bpp = 2;
1952 
1953 	/*
1954 	 * If using screen objects, then assume 32-bpp because that's what the
1955 	 * SVGA device is assuming
1956 	 */
1957 	if (dev_priv->sou_priv)
1958 		assumed_bpp = 4;
1959 
1960 	/* Add preferred mode */
1961 	{
1962 		mode = drm_mode_duplicate(dev, &prefmode);
1963 		if (!mode)
1964 			return 0;
1965 		mode->hdisplay = du->pref_width;
1966 		mode->vdisplay = du->pref_height;
1967 		vmw_guess_mode_timing(mode);
1968 
1969 		if (vmw_kms_validate_mode_vram(dev_priv,
1970 						mode->hdisplay * assumed_bpp,
1971 						mode->vdisplay)) {
1972 			drm_mode_probed_add(connector, mode);
1973 		} else {
1974 			drm_mode_destroy(dev, mode);
1975 			mode = NULL;
1976 		}
1977 
1978 		if (du->pref_mode) {
1979 			list_del_init(&du->pref_mode->head);
1980 			drm_mode_destroy(dev, du->pref_mode);
1981 		}
1982 
1983 		/* mode might be null here, this is intended */
1984 		du->pref_mode = mode;
1985 	}
1986 
1987 	for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {
1988 		bmode = &vmw_kms_connector_builtin[i];
1989 		if (bmode->hdisplay > max_width ||
1990 		    bmode->vdisplay > max_height)
1991 			continue;
1992 
1993 		if (!vmw_kms_validate_mode_vram(dev_priv,
1994 						bmode->hdisplay * assumed_bpp,
1995 						bmode->vdisplay))
1996 			continue;
1997 
1998 		mode = drm_mode_duplicate(dev, bmode);
1999 		if (!mode)
2000 			return 0;
2001 		mode->vrefresh = drm_mode_vrefresh(mode);
2002 
2003 		drm_mode_probed_add(connector, mode);
2004 	}
2005 
2006 	/* Move the prefered mode first, help apps pick the right mode. */
2007 	if (du->pref_mode)
2008 		list_move(&du->pref_mode->head, &connector->probed_modes);
2009 
2010 	drm_mode_connector_list_update(connector, true);
2011 
2012 	return 1;
2013 }
2014 
2015 int vmw_du_connector_set_property(struct drm_connector *connector,
2016 				  struct drm_property *property,
2017 				  uint64_t val)
2018 {
2019 	return 0;
2020 }
2021 
2022 
2023 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
2024 				struct drm_file *file_priv)
2025 {
2026 	struct vmw_private *dev_priv = vmw_priv(dev);
2027 	struct drm_vmw_update_layout_arg *arg =
2028 		(struct drm_vmw_update_layout_arg *)data;
2029 	void __user *user_rects;
2030 	struct drm_vmw_rect *rects;
2031 	unsigned rects_size;
2032 	int ret;
2033 	int i;
2034 	struct drm_mode_config *mode_config = &dev->mode_config;
2035 
2036 	if (!arg->num_outputs) {
2037 		struct drm_vmw_rect def_rect = {0, 0, 800, 600};
2038 		vmw_du_update_layout(dev_priv, 1, &def_rect);
2039 		return 0;
2040 	}
2041 
2042 	rects_size = arg->num_outputs * sizeof(struct drm_vmw_rect);
2043 	rects = kcalloc(arg->num_outputs, sizeof(struct drm_vmw_rect),
2044 			GFP_KERNEL);
2045 	if (unlikely(!rects))
2046 		return -ENOMEM;
2047 
2048 	user_rects = (void __user *)(unsigned long)arg->rects;
2049 	ret = copy_from_user(rects, user_rects, rects_size);
2050 	if (unlikely(ret != 0)) {
2051 		DRM_ERROR("Failed to get rects.\n");
2052 		ret = -EFAULT;
2053 		goto out_free;
2054 	}
2055 
2056 	for (i = 0; i < arg->num_outputs; ++i) {
2057 		if (rects[i].x < 0 ||
2058 		    rects[i].y < 0 ||
2059 		    rects[i].x + rects[i].w > mode_config->max_width ||
2060 		    rects[i].y + rects[i].h > mode_config->max_height) {
2061 			DRM_ERROR("Invalid GUI layout.\n");
2062 			ret = -EINVAL;
2063 			goto out_free;
2064 		}
2065 	}
2066 
2067 	vmw_du_update_layout(dev_priv, arg->num_outputs, rects);
2068 
2069 out_free:
2070 	kfree(rects);
2071 	return ret;
2072 }
2073