1/**************************************************************************
  2 *
  3 * Copyright © 2011-2015 VMware, Inc., Palo Alto, CA., USA
  4 * All Rights Reserved.
  5 *
  6 * Permission is hereby granted, free of charge, to any person obtaining a
  7 * copy of this software and associated documentation files (the
  8 * "Software"), to deal in the Software without restriction, including
  9 * without limitation the rights to use, copy, modify, merge, publish,
 10 * distribute, sub license, and/or sell copies of the Software, and to
 11 * permit persons to whom the Software is furnished to do so, subject to
 12 * the following conditions:
 13 *
 14 * The above copyright notice and this permission notice (including the
 15 * next paragraph) shall be included in all copies or substantial portions
 16 * of the Software.
 17 *
 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 25 *
 26 **************************************************************************/
 27
 28#include "vmwgfx_kms.h"
 29#include <drm/drm_plane_helper.h>
 30
 31
 32#define vmw_crtc_to_sou(x) \
 33	container_of(x, struct vmw_screen_object_unit, base.crtc)
 34#define vmw_encoder_to_sou(x) \
 35	container_of(x, struct vmw_screen_object_unit, base.encoder)
 36#define vmw_connector_to_sou(x) \
 37	container_of(x, struct vmw_screen_object_unit, base.connector)
 38
 39/**
 40 * struct vmw_kms_sou_surface_dirty - Closure structure for
 41 * blit surface to screen command.
 42 * @base: The base type we derive from. Used by vmw_kms_helper_dirty().
 43 * @left: Left side of bounding box.
 44 * @right: Right side of bounding box.
 45 * @top: Top side of bounding box.
 46 * @bottom: Bottom side of bounding box.
 47 * @dst_x: Difference between source clip rects and framebuffer coordinates.
 48 * @dst_y: Difference between source clip rects and framebuffer coordinates.
 49 * @sid: Surface id of surface to copy from.
 50 */
 51struct vmw_kms_sou_surface_dirty {
 52	struct vmw_kms_dirty base;
 53	s32 left, right, top, bottom;
 54	s32 dst_x, dst_y;
 55	u32 sid;
 56};
 57
 58/*
 59 * SVGA commands that are used by this code. Please see the device headers
 60 * for explanation.
 61 */
 62struct vmw_kms_sou_readback_blit {
 63	uint32 header;
 64	SVGAFifoCmdBlitScreenToGMRFB body;
 65};
 66
 67struct vmw_kms_sou_dmabuf_blit {
 68	uint32 header;
 69	SVGAFifoCmdBlitGMRFBToScreen body;
 70};
 71
 72struct vmw_kms_sou_dirty_cmd {
 73	SVGA3dCmdHeader header;
 74	SVGA3dCmdBlitSurfaceToScreen body;
 75};
 76
 77/**
 78 * Display unit using screen objects.
 79 */
 80struct vmw_screen_object_unit {
 81	struct vmw_display_unit base;
 82
 83	unsigned long buffer_size; /**< Size of allocated buffer */
 84	struct vmw_dma_buffer *buffer; /**< Backing store buffer */
 85
 86	bool defined;
 
 87};
 88
 89static void vmw_sou_destroy(struct vmw_screen_object_unit *sou)
 90{
 91	vmw_du_cleanup(&sou->base);
 92	kfree(sou);
 93}
 94
 95
 96/*
 97 * Screen Object Display Unit CRTC functions
 98 */
 99
100static void vmw_sou_crtc_destroy(struct drm_crtc *crtc)
101{
102	vmw_sou_destroy(vmw_crtc_to_sou(crtc));
103}
104
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
105/**
106 * Send the fifo command to create a screen.
107 */
108static int vmw_sou_fifo_create(struct vmw_private *dev_priv,
109			       struct vmw_screen_object_unit *sou,
110			       uint32_t x, uint32_t y,
111			       struct drm_display_mode *mode)
112{
113	size_t fifo_size;
114
115	struct {
116		struct {
117			uint32_t cmdType;
118		} header;
119		SVGAScreenObject obj;
120	} *cmd;
121
122	BUG_ON(!sou->buffer);
123
124	fifo_size = sizeof(*cmd);
125	cmd = vmw_fifo_reserve(dev_priv, fifo_size);
126	/* The hardware has hung, nothing we can do about it here. */
127	if (unlikely(cmd == NULL)) {
128		DRM_ERROR("Fifo reserve failed.\n");
129		return -ENOMEM;
130	}
131
132	memset(cmd, 0, fifo_size);
133	cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN;
134	cmd->obj.structSize = sizeof(SVGAScreenObject);
135	cmd->obj.id = sou->base.unit;
136	cmd->obj.flags = SVGA_SCREEN_HAS_ROOT |
137		(sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0);
138	cmd->obj.size.width = mode->hdisplay;
139	cmd->obj.size.height = mode->vdisplay;
140	if (sou->base.is_implicit) {
141		cmd->obj.root.x = x;
142		cmd->obj.root.y = y;
143	} else {
144		cmd->obj.root.x = sou->base.gui_x;
145		cmd->obj.root.y = sou->base.gui_y;
146	}
147	sou->base.set_gui_x = cmd->obj.root.x;
148	sou->base.set_gui_y = cmd->obj.root.y;
149
150	/* Ok to assume that buffer is pinned in vram */
151	vmw_bo_get_guest_ptr(&sou->buffer->base, &cmd->obj.backingStore.ptr);
152	cmd->obj.backingStore.pitch = mode->hdisplay * 4;
153
154	vmw_fifo_commit(dev_priv, fifo_size);
155
156	sou->defined = true;
157
158	return 0;
159}
160
161/**
162 * Send the fifo command to destroy a screen.
163 */
164static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv,
165				struct vmw_screen_object_unit *sou)
166{
167	size_t fifo_size;
168	int ret;
169
170	struct {
171		struct {
172			uint32_t cmdType;
173		} header;
174		SVGAFifoCmdDestroyScreen body;
175	} *cmd;
176
177	/* no need to do anything */
178	if (unlikely(!sou->defined))
179		return 0;
180
181	fifo_size = sizeof(*cmd);
182	cmd = vmw_fifo_reserve(dev_priv, fifo_size);
183	/* the hardware has hung, nothing we can do about it here */
184	if (unlikely(cmd == NULL)) {
185		DRM_ERROR("Fifo reserve failed.\n");
186		return -ENOMEM;
187	}
188
189	memset(cmd, 0, fifo_size);
190	cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN;
191	cmd->body.screenId = sou->base.unit;
192
193	vmw_fifo_commit(dev_priv, fifo_size);
194
195	/* Force sync */
196	ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ);
197	if (unlikely(ret != 0))
198		DRM_ERROR("Failed to sync with HW");
199	else
200		sou->defined = false;
201
202	return ret;
203}
204
205/**
206 * Free the backing store.
207 */
208static void vmw_sou_backing_free(struct vmw_private *dev_priv,
209				 struct vmw_screen_object_unit *sou)
210{
211	vmw_dmabuf_unreference(&sou->buffer);
 
 
 
 
 
 
 
212	sou->buffer_size = 0;
213}
214
215/**
216 * Allocate the backing store for the buffer.
217 */
218static int vmw_sou_backing_alloc(struct vmw_private *dev_priv,
219				 struct vmw_screen_object_unit *sou,
220				 unsigned long size)
221{
222	int ret;
223
224	if (sou->buffer_size == size)
225		return 0;
226
227	if (sou->buffer)
228		vmw_sou_backing_free(dev_priv, sou);
229
230	sou->buffer = kzalloc(sizeof(*sou->buffer), GFP_KERNEL);
231	if (unlikely(sou->buffer == NULL))
232		return -ENOMEM;
233
234	/* After we have alloced the backing store might not be able to
235	 * resume the overlays, this is preferred to failing to alloc.
236	 */
237	vmw_overlay_pause_all(dev_priv);
238	ret = vmw_dmabuf_init(dev_priv, sou->buffer, size,
239			      &vmw_vram_ne_placement,
240			      false, &vmw_dmabuf_bo_free);
241	vmw_overlay_resume_all(dev_priv);
242
243	if (unlikely(ret != 0))
244		sou->buffer = NULL; /* vmw_dmabuf_init frees on error */
245	else
246		sou->buffer_size = size;
247
248	return ret;
249}
250
251static int vmw_sou_crtc_set_config(struct drm_mode_set *set)
252{
253	struct vmw_private *dev_priv;
254	struct vmw_screen_object_unit *sou;
255	struct drm_connector *connector;
256	struct drm_display_mode *mode;
257	struct drm_encoder *encoder;
258	struct vmw_framebuffer *vfb;
259	struct drm_framebuffer *fb;
260	struct drm_crtc *crtc;
261	int ret = 0;
262
263	if (!set)
264		return -EINVAL;
265
266	if (!set->crtc)
267		return -EINVAL;
268
269	/* get the sou */
270	crtc = set->crtc;
271	sou = vmw_crtc_to_sou(crtc);
272	vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
273	dev_priv = vmw_priv(crtc->dev);
274
275	if (set->num_connectors > 1) {
276		DRM_ERROR("Too many connectors\n");
277		return -EINVAL;
278	}
279
280	if (set->num_connectors == 1 &&
281	    set->connectors[0] != &sou->base.connector) {
282		DRM_ERROR("Connector doesn't match %p %p\n",
283			set->connectors[0], &sou->base.connector);
284		return -EINVAL;
285	}
286
287	/* Only one active implicit frame-buffer at a time. */
288	if (sou->base.is_implicit &&
289	    dev_priv->implicit_fb && vfb &&
290	    !(dev_priv->num_implicit == 1 &&
291	      sou->base.active_implicit) &&
292	    dev_priv->implicit_fb != vfb) {
293		DRM_ERROR("Multiple implicit framebuffers not supported.\n");
294		return -EINVAL;
295	}
296
297	/* since they always map one to one these are safe */
298	connector = &sou->base.connector;
299	encoder = &sou->base.encoder;
300
301	/* should we turn the crtc off */
302	if (set->num_connectors == 0 || !set->mode || !set->fb) {
303		ret = vmw_sou_fifo_destroy(dev_priv, sou);
304		/* the hardware has hung don't do anything more */
305		if (unlikely(ret != 0))
306			return ret;
307
308		connector->encoder = NULL;
309		encoder->crtc = NULL;
310		crtc->primary->fb = NULL;
311		crtc->x = 0;
312		crtc->y = 0;
313		crtc->enabled = false;
314
315		vmw_kms_del_active(dev_priv, &sou->base);
316
317		vmw_sou_backing_free(dev_priv, sou);
318
319		return 0;
320	}
321
322
323	/* we now know we want to set a mode */
324	mode = set->mode;
325	fb = set->fb;
326
327	if (set->x + mode->hdisplay > fb->width ||
328	    set->y + mode->vdisplay > fb->height) {
329		DRM_ERROR("set outside of framebuffer\n");
330		return -EINVAL;
331	}
332
333	vmw_svga_enable(dev_priv);
334
335	if (mode->hdisplay != crtc->mode.hdisplay ||
336	    mode->vdisplay != crtc->mode.vdisplay) {
337		/* no need to check if depth is different, because backing
338		 * store depth is forced to 4 by the device.
339		 */
340
341		ret = vmw_sou_fifo_destroy(dev_priv, sou);
342		/* the hardware has hung don't do anything more */
343		if (unlikely(ret != 0))
344			return ret;
345
346		vmw_sou_backing_free(dev_priv, sou);
347	}
348
349	if (!sou->buffer) {
350		/* forced to depth 4 by the device */
351		size_t size = mode->hdisplay * mode->vdisplay * 4;
352		ret = vmw_sou_backing_alloc(dev_priv, sou, size);
353		if (unlikely(ret != 0))
354			return ret;
355	}
356
357	ret = vmw_sou_fifo_create(dev_priv, sou, set->x, set->y, mode);
358	if (unlikely(ret != 0)) {
359		/*
360		 * We are in a bit of a situation here, the hardware has
361		 * hung and we may or may not have a buffer hanging of
362		 * the screen object, best thing to do is not do anything
363		 * if we where defined, if not just turn the crtc of.
364		 * Not what userspace wants but it needs to htfu.
365		 */
366		if (sou->defined)
367			return ret;
368
369		connector->encoder = NULL;
370		encoder->crtc = NULL;
371		crtc->primary->fb = NULL;
372		crtc->x = 0;
373		crtc->y = 0;
374		crtc->enabled = false;
375
376		return ret;
377	}
378
379	vmw_kms_add_active(dev_priv, &sou->base, vfb);
380
381	connector->encoder = encoder;
382	encoder->crtc = crtc;
383	crtc->mode = *mode;
384	crtc->primary->fb = fb;
385	crtc->x = set->x;
386	crtc->y = set->y;
387	crtc->enabled = true;
388
389	return 0;
390}
391
392static int vmw_sou_crtc_page_flip(struct drm_crtc *crtc,
393				  struct drm_framebuffer *fb,
394				  struct drm_pending_vblank_event *event,
395				  uint32_t flags)
396{
397	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
398	struct drm_framebuffer *old_fb = crtc->primary->fb;
399	struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(fb);
400	struct vmw_fence_obj *fence = NULL;
401	struct drm_vmw_rect vclips;
402	int ret;
403
404	if (!vmw_kms_crtc_flippable(dev_priv, crtc))
405		return -EINVAL;
406
407	crtc->primary->fb = fb;
408
409	/* do a full screen dirty update */
410	vclips.x = crtc->x;
411	vclips.y = crtc->y;
412	vclips.w = crtc->mode.hdisplay;
413	vclips.h = crtc->mode.vdisplay;
414
415	if (vfb->dmabuf)
416		ret = vmw_kms_sou_do_dmabuf_dirty(dev_priv, vfb,
417						  NULL, &vclips, 1, 1,
418						  true, &fence);
419	else
420		ret = vmw_kms_sou_do_surface_dirty(dev_priv, vfb,
421						   NULL, &vclips, NULL,
422						   0, 0, 1, 1, &fence);
423
424
425	if (ret != 0)
426		goto out_no_fence;
427	if (!fence) {
428		ret = -EINVAL;
429		goto out_no_fence;
430	}
431
432	if (event) {
433		struct drm_file *file_priv = event->base.file_priv;
434
435		ret = vmw_event_fence_action_queue(file_priv, fence,
436						   &event->base,
437						   &event->event.tv_sec,
438						   &event->event.tv_usec,
439						   true);
440	}
441
442	/*
443	 * No need to hold on to this now. The only cleanup
444	 * we need to do if we fail is unref the fence.
445	 */
446	vmw_fence_obj_unreference(&fence);
447
448	if (vmw_crtc_to_du(crtc)->is_implicit)
449		vmw_kms_update_implicit_fb(dev_priv, crtc);
450
451	return ret;
452
453out_no_fence:
454	crtc->primary->fb = old_fb;
455	return ret;
456}
457
458static const struct drm_crtc_funcs vmw_screen_object_crtc_funcs = {
459	.cursor_set2 = vmw_du_crtc_cursor_set2,
460	.cursor_move = vmw_du_crtc_cursor_move,
461	.gamma_set = vmw_du_crtc_gamma_set,
462	.destroy = vmw_sou_crtc_destroy,
463	.set_config = vmw_sou_crtc_set_config,
464	.page_flip = vmw_sou_crtc_page_flip,
465};
466
467/*
468 * Screen Object Display Unit encoder functions
469 */
470
471static void vmw_sou_encoder_destroy(struct drm_encoder *encoder)
472{
473	vmw_sou_destroy(vmw_encoder_to_sou(encoder));
474}
475
476static const struct drm_encoder_funcs vmw_screen_object_encoder_funcs = {
477	.destroy = vmw_sou_encoder_destroy,
478};
479
480/*
481 * Screen Object Display Unit connector functions
482 */
483
484static void vmw_sou_connector_destroy(struct drm_connector *connector)
485{
486	vmw_sou_destroy(vmw_connector_to_sou(connector));
487}
488
489static const struct drm_connector_funcs vmw_sou_connector_funcs = {
490	.dpms = vmw_du_connector_dpms,
 
 
491	.detect = vmw_du_connector_detect,
492	.fill_modes = vmw_du_connector_fill_modes,
493	.set_property = vmw_du_connector_set_property,
494	.destroy = vmw_sou_connector_destroy,
495};
496
497static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit)
498{
499	struct vmw_screen_object_unit *sou;
500	struct drm_device *dev = dev_priv->dev;
501	struct drm_connector *connector;
502	struct drm_encoder *encoder;
503	struct drm_crtc *crtc;
504
505	sou = kzalloc(sizeof(*sou), GFP_KERNEL);
506	if (!sou)
507		return -ENOMEM;
508
509	sou->base.unit = unit;
510	crtc = &sou->base.crtc;
511	encoder = &sou->base.encoder;
512	connector = &sou->base.connector;
513
514	sou->base.active_implicit = false;
 
515	sou->base.pref_active = (unit == 0);
516	sou->base.pref_width = dev_priv->initial_width;
517	sou->base.pref_height = dev_priv->initial_height;
518	sou->base.pref_mode = NULL;
519	sou->base.is_implicit = false;
520
521	drm_connector_init(dev, connector, &vmw_sou_connector_funcs,
522			   DRM_MODE_CONNECTOR_VIRTUAL);
523	connector->status = vmw_du_connector_detect(connector, true);
524
525	drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs,
526			 DRM_MODE_ENCODER_VIRTUAL, NULL);
527	drm_mode_connector_attach_encoder(connector, encoder);
528	encoder->possible_crtcs = (1 << unit);
529	encoder->possible_clones = 0;
530
531	(void) drm_connector_register(connector);
532
533	drm_crtc_init(dev, crtc, &vmw_screen_object_crtc_funcs);
534
535	drm_mode_crtc_set_gamma_size(crtc, 256);
536
537	drm_object_attach_property(&connector->base,
538				   dev->mode_config.dirty_info_property,
539				   1);
540	drm_object_attach_property(&connector->base,
541				   dev_priv->hotplug_mode_update_property, 1);
542	drm_object_attach_property(&connector->base,
543				   dev->mode_config.suggested_x_property, 0);
544	drm_object_attach_property(&connector->base,
545				   dev->mode_config.suggested_y_property, 0);
546	if (dev_priv->implicit_placement_property)
547		drm_object_attach_property
548			(&connector->base,
549			 dev_priv->implicit_placement_property,
550			 sou->base.is_implicit);
551
552	return 0;
553}
554
555int vmw_kms_sou_init_display(struct vmw_private *dev_priv)
556{
557	struct drm_device *dev = dev_priv->dev;
558	int i, ret;
559
 
 
 
 
 
560	if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) {
561		DRM_INFO("Not using screen objects,"
562			 " missing cap SCREEN_OBJECT_2\n");
563		return -ENOSYS;
564	}
565
566	ret = -ENOMEM;
567	dev_priv->num_implicit = 0;
568	dev_priv->implicit_fb = NULL;
 
 
 
 
569
570	ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
571	if (unlikely(ret != 0))
572		return ret;
573
574	ret = drm_mode_create_dirty_info_property(dev);
575	if (unlikely(ret != 0))
576		goto err_vblank_cleanup;
577
578	vmw_kms_create_implicit_placement_property(dev_priv, false);
579
580	for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
581		vmw_sou_init(dev_priv, i);
582
583	dev_priv->active_display_unit = vmw_du_screen_object;
584
585	DRM_INFO("Screen Objects Display Unit initialized\n");
586
587	return 0;
588
589err_vblank_cleanup:
590	drm_vblank_cleanup(dev);
 
 
 
 
591	return ret;
592}
593
594int vmw_kms_sou_close_display(struct vmw_private *dev_priv)
595{
596	struct drm_device *dev = dev_priv->dev;
597
598	drm_vblank_cleanup(dev);
599
600	return 0;
601}
602
603static int do_dmabuf_define_gmrfb(struct vmw_private *dev_priv,
604				  struct vmw_framebuffer *framebuffer)
605{
606	struct vmw_dma_buffer *buf =
607		container_of(framebuffer, struct vmw_framebuffer_dmabuf,
608			     base)->buffer;
609	int depth = framebuffer->base.depth;
610	struct {
611		uint32_t header;
612		SVGAFifoCmdDefineGMRFB body;
613	} *cmd;
614
615	/* Emulate RGBA support, contrary to svga_reg.h this is not
616	 * supported by hosts. This is only a problem if we are reading
617	 * this value later and expecting what we uploaded back.
618	 */
619	if (depth == 32)
620		depth = 24;
621
622	cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
623	if (!cmd) {
624		DRM_ERROR("Out of fifo space for dirty framebuffer command.\n");
625		return -ENOMEM;
626	}
627
628	cmd->header = SVGA_CMD_DEFINE_GMRFB;
629	cmd->body.format.bitsPerPixel = framebuffer->base.bits_per_pixel;
630	cmd->body.format.colorDepth = depth;
631	cmd->body.format.reserved = 0;
632	cmd->body.bytesPerLine = framebuffer->base.pitches[0];
633	/* Buffer is reserved in vram or GMR */
634	vmw_bo_get_guest_ptr(&buf->base, &cmd->body.ptr);
635	vmw_fifo_commit(dev_priv, sizeof(*cmd));
636
637	return 0;
638}
639
640/**
641 * vmw_sou_surface_fifo_commit - Callback to fill in and submit a
642 * blit surface to screen command.
643 *
644 * @dirty: The closure structure.
645 *
646 * Fills in the missing fields in the command, and translates the cliprects
647 * to match the destination bounding box encoded.
648 */
649static void vmw_sou_surface_fifo_commit(struct vmw_kms_dirty *dirty)
650{
651	struct vmw_kms_sou_surface_dirty *sdirty =
652		container_of(dirty, typeof(*sdirty), base);
653	struct vmw_kms_sou_dirty_cmd *cmd = dirty->cmd;
654	s32 trans_x = dirty->unit->crtc.x - sdirty->dst_x;
655	s32 trans_y = dirty->unit->crtc.y - sdirty->dst_y;
656	size_t region_size = dirty->num_hits * sizeof(SVGASignedRect);
657	SVGASignedRect *blit = (SVGASignedRect *) &cmd[1];
658	int i;
659
660	if (!dirty->num_hits) {
661		vmw_fifo_commit(dirty->dev_priv, 0);
662		return;
663	}
664
665	cmd->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN;
666	cmd->header.size = sizeof(cmd->body) + region_size;
667
668	/*
669	 * Use the destination bounding box to specify destination - and
670	 * source bounding regions.
671	 */
672	cmd->body.destRect.left = sdirty->left;
673	cmd->body.destRect.right = sdirty->right;
674	cmd->body.destRect.top = sdirty->top;
675	cmd->body.destRect.bottom = sdirty->bottom;
676
677	cmd->body.srcRect.left = sdirty->left + trans_x;
678	cmd->body.srcRect.right = sdirty->right + trans_x;
679	cmd->body.srcRect.top = sdirty->top + trans_y;
680	cmd->body.srcRect.bottom = sdirty->bottom + trans_y;
681
682	cmd->body.srcImage.sid = sdirty->sid;
683	cmd->body.destScreenId = dirty->unit->unit;
684
685	/* Blits are relative to the destination rect. Translate. */
686	for (i = 0; i < dirty->num_hits; ++i, ++blit) {
687		blit->left -= sdirty->left;
688		blit->right -= sdirty->left;
689		blit->top -= sdirty->top;
690		blit->bottom -= sdirty->top;
691	}
692
693	vmw_fifo_commit(dirty->dev_priv, region_size + sizeof(*cmd));
694
695	sdirty->left = sdirty->top = S32_MAX;
696	sdirty->right = sdirty->bottom = S32_MIN;
697}
698
699/**
700 * vmw_sou_surface_clip - Callback to encode a blit surface to screen cliprect.
701 *
702 * @dirty: The closure structure
703 *
704 * Encodes a SVGASignedRect cliprect and updates the bounding box of the
705 * BLIT_SURFACE_TO_SCREEN command.
706 */
707static void vmw_sou_surface_clip(struct vmw_kms_dirty *dirty)
 
708{
709	struct vmw_kms_sou_surface_dirty *sdirty =
710		container_of(dirty, typeof(*sdirty), base);
711	struct vmw_kms_sou_dirty_cmd *cmd = dirty->cmd;
712	SVGASignedRect *blit = (SVGASignedRect *) &cmd[1];
713
714	/* Destination rect. */
715	blit += dirty->num_hits;
716	blit->left = dirty->unit_x1;
717	blit->top = dirty->unit_y1;
718	blit->right = dirty->unit_x2;
719	blit->bottom = dirty->unit_y2;
720
721	/* Destination bounding box */
722	sdirty->left = min_t(s32, sdirty->left, dirty->unit_x1);
723	sdirty->top = min_t(s32, sdirty->top, dirty->unit_y1);
724	sdirty->right = max_t(s32, sdirty->right, dirty->unit_x2);
725	sdirty->bottom = max_t(s32, sdirty->bottom, dirty->unit_y2);
726
727	dirty->num_hits++;
728}
729
730/**
731 * vmw_kms_sou_do_surface_dirty - Dirty part of a surface backed framebuffer
732 *
733 * @dev_priv: Pointer to the device private structure.
734 * @framebuffer: Pointer to the surface-buffer backed framebuffer.
735 * @clips: Array of clip rects. Either @clips or @vclips must be NULL.
736 * @vclips: Alternate array of clip rects. Either @clips or @vclips must
737 * be NULL.
738 * @srf: Pointer to surface to blit from. If NULL, the surface attached
739 * to @framebuffer will be used.
740 * @dest_x: X coordinate offset to align @srf with framebuffer coordinates.
741 * @dest_y: Y coordinate offset to align @srf with framebuffer coordinates.
742 * @num_clips: Number of clip rects in @clips.
743 * @inc: Increment to use when looping over @clips.
744 * @out_fence: If non-NULL, will return a ref-counted pointer to a
745 * struct vmw_fence_obj. The returned fence pointer may be NULL in which
746 * case the device has already synchronized.
747 *
748 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
749 * interrupted.
750 */
751int vmw_kms_sou_do_surface_dirty(struct vmw_private *dev_priv,
752				 struct vmw_framebuffer *framebuffer,
753				 struct drm_clip_rect *clips,
754				 struct drm_vmw_rect *vclips,
755				 struct vmw_resource *srf,
756				 s32 dest_x,
757				 s32 dest_y,
758				 unsigned num_clips, int inc,
759				 struct vmw_fence_obj **out_fence)
760{
761	struct vmw_framebuffer_surface *vfbs =
762		container_of(framebuffer, typeof(*vfbs), base);
763	struct vmw_kms_sou_surface_dirty sdirty;
764	int ret;
765
766	if (!srf)
767		srf = &vfbs->surface->res;
768
769	ret = vmw_kms_helper_resource_prepare(srf, true);
770	if (ret)
771		return ret;
772
773	sdirty.base.fifo_commit = vmw_sou_surface_fifo_commit;
774	sdirty.base.clip = vmw_sou_surface_clip;
775	sdirty.base.dev_priv = dev_priv;
776	sdirty.base.fifo_reserve_size = sizeof(struct vmw_kms_sou_dirty_cmd) +
777	  sizeof(SVGASignedRect) * num_clips;
778
779	sdirty.sid = srf->id;
780	sdirty.left = sdirty.top = S32_MAX;
781	sdirty.right = sdirty.bottom = S32_MIN;
782	sdirty.dst_x = dest_x;
783	sdirty.dst_y = dest_y;
784
785	ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
786				   dest_x, dest_y, num_clips, inc,
787				   &sdirty.base);
788	vmw_kms_helper_resource_finish(srf, out_fence);
789
790	return ret;
791}
792
793/**
794 * vmw_sou_dmabuf_fifo_commit - Callback to submit a set of readback clips.
795 *
796 * @dirty: The closure structure.
797 *
798 * Commits a previously built command buffer of readback clips.
799 */
800static void vmw_sou_dmabuf_fifo_commit(struct vmw_kms_dirty *dirty)
801{
802	if (!dirty->num_hits) {
803		vmw_fifo_commit(dirty->dev_priv, 0);
804		return;
805	}
806
807	vmw_fifo_commit(dirty->dev_priv,
808			sizeof(struct vmw_kms_sou_dmabuf_blit) *
809			dirty->num_hits);
810}
811
812/**
813 * vmw_sou_dmabuf_clip - Callback to encode a readback cliprect.
814 *
815 * @dirty: The closure structure
816 *
817 * Encodes a BLIT_GMRFB_TO_SCREEN cliprect.
818 */
819static void vmw_sou_dmabuf_clip(struct vmw_kms_dirty *dirty)
820{
821	struct vmw_kms_sou_dmabuf_blit *blit = dirty->cmd;
822
823	blit += dirty->num_hits;
824	blit->header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN;
825	blit->body.destScreenId = dirty->unit->unit;
826	blit->body.srcOrigin.x = dirty->fb_x;
827	blit->body.srcOrigin.y = dirty->fb_y;
828	blit->body.destRect.left = dirty->unit_x1;
829	blit->body.destRect.top = dirty->unit_y1;
830	blit->body.destRect.right = dirty->unit_x2;
831	blit->body.destRect.bottom = dirty->unit_y2;
832	dirty->num_hits++;
833}
834
835/**
836 * vmw_kms_do_dmabuf_dirty - Dirty part of a dma-buffer backed framebuffer
837 *
838 * @dev_priv: Pointer to the device private structure.
839 * @framebuffer: Pointer to the dma-buffer backed framebuffer.
840 * @clips: Array of clip rects.
841 * @vclips: Alternate array of clip rects. Either @clips or @vclips must
842 * be NULL.
843 * @num_clips: Number of clip rects in @clips.
844 * @increment: Increment to use when looping over @clips.
845 * @interruptible: Whether to perform waits interruptible if possible.
846 * @out_fence: If non-NULL, will return a ref-counted pointer to a
847 * struct vmw_fence_obj. The returned fence pointer may be NULL in which
848 * case the device has already synchronized.
849 *
850 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
851 * interrupted.
852 */
853int vmw_kms_sou_do_dmabuf_dirty(struct vmw_private *dev_priv,
854				struct vmw_framebuffer *framebuffer,
855				struct drm_clip_rect *clips,
856				struct drm_vmw_rect *vclips,
857				unsigned num_clips, int increment,
858				bool interruptible,
859				struct vmw_fence_obj **out_fence)
860{
861	struct vmw_dma_buffer *buf =
862		container_of(framebuffer, struct vmw_framebuffer_dmabuf,
863			     base)->buffer;
864	struct vmw_kms_dirty dirty;
865	int ret;
866
867	ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, interruptible,
868					    false);
869	if (ret)
870		return ret;
871
872	ret = do_dmabuf_define_gmrfb(dev_priv, framebuffer);
873	if (unlikely(ret != 0))
874		goto out_revert;
875
876	dirty.fifo_commit = vmw_sou_dmabuf_fifo_commit;
877	dirty.clip = vmw_sou_dmabuf_clip;
878	dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_dmabuf_blit) *
879		num_clips;
880	ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
881				   0, 0, num_clips, increment, &dirty);
882	vmw_kms_helper_buffer_finish(dev_priv, NULL, buf, out_fence, NULL);
883
884	return ret;
885
886out_revert:
887	vmw_kms_helper_buffer_revert(buf);
888
889	return ret;
890}
891
892
893/**
894 * vmw_sou_readback_fifo_commit - Callback to submit a set of readback clips.
895 *
896 * @dirty: The closure structure.
897 *
898 * Commits a previously built command buffer of readback clips.
899 */
900static void vmw_sou_readback_fifo_commit(struct vmw_kms_dirty *dirty)
 
901{
902	if (!dirty->num_hits) {
903		vmw_fifo_commit(dirty->dev_priv, 0);
904		return;
905	}
906
907	vmw_fifo_commit(dirty->dev_priv,
908			sizeof(struct vmw_kms_sou_readback_blit) *
909			dirty->num_hits);
910}
911
912/**
913 * vmw_sou_readback_clip - Callback to encode a readback cliprect.
914 *
915 * @dirty: The closure structure
916 *
917 * Encodes a BLIT_SCREEN_TO_GMRFB cliprect.
918 */
919static void vmw_sou_readback_clip(struct vmw_kms_dirty *dirty)
920{
921	struct vmw_kms_sou_readback_blit *blit = dirty->cmd;
922
923	blit += dirty->num_hits;
924	blit->header = SVGA_CMD_BLIT_SCREEN_TO_GMRFB;
925	blit->body.srcScreenId = dirty->unit->unit;
926	blit->body.destOrigin.x = dirty->fb_x;
927	blit->body.destOrigin.y = dirty->fb_y;
928	blit->body.srcRect.left = dirty->unit_x1;
929	blit->body.srcRect.top = dirty->unit_y1;
930	blit->body.srcRect.right = dirty->unit_x2;
931	blit->body.srcRect.bottom = dirty->unit_y2;
932	dirty->num_hits++;
933}
934
935/**
936 * vmw_kms_sou_readback - Perform a readback from the screen object system to
937 * a dma-buffer backed framebuffer.
938 *
939 * @dev_priv: Pointer to the device private structure.
940 * @file_priv: Pointer to a struct drm_file identifying the caller.
941 * Must be set to NULL if @user_fence_rep is NULL.
942 * @vfb: Pointer to the dma-buffer backed framebuffer.
943 * @user_fence_rep: User-space provided structure for fence information.
944 * Must be set to non-NULL if @file_priv is non-NULL.
945 * @vclips: Array of clip rects.
946 * @num_clips: Number of clip rects in @vclips.
947 *
948 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
949 * interrupted.
950 */
951int vmw_kms_sou_readback(struct vmw_private *dev_priv,
952			 struct drm_file *file_priv,
953			 struct vmw_framebuffer *vfb,
954			 struct drm_vmw_fence_rep __user *user_fence_rep,
955			 struct drm_vmw_rect *vclips,
956			 uint32_t num_clips)
957{
958	struct vmw_dma_buffer *buf =
959		container_of(vfb, struct vmw_framebuffer_dmabuf, base)->buffer;
960	struct vmw_kms_dirty dirty;
961	int ret;
962
963	ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, true, false);
964	if (ret)
965		return ret;
966
967	ret = do_dmabuf_define_gmrfb(dev_priv, vfb);
968	if (unlikely(ret != 0))
969		goto out_revert;
970
971	dirty.fifo_commit = vmw_sou_readback_fifo_commit;
972	dirty.clip = vmw_sou_readback_clip;
973	dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_readback_blit) *
974		num_clips;
975	ret = vmw_kms_helper_dirty(dev_priv, vfb, NULL, vclips,
976				   0, 0, num_clips, 1, &dirty);
977	vmw_kms_helper_buffer_finish(dev_priv, file_priv, buf, NULL,
978				     user_fence_rep);
979
980	return ret;
981
982out_revert:
983	vmw_kms_helper_buffer_revert(buf);
984
985	return ret;
986}