1 // SPDX-License-Identifier: GPL-2.0 OR MIT
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5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
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27 
28 #include "vmwgfx_bo.h"
29 #include "vmwgfx_kms.h"
30 
31 #include <drm/drm_atomic.h>
32 #include <drm/drm_atomic_helper.h>
33 #include <drm/drm_damage_helper.h>
34 #include <drm/drm_fourcc.h>
35 
36 #define vmw_crtc_to_sou(x) \
37 	container_of(x, struct vmw_screen_object_unit, base.crtc)
38 #define vmw_encoder_to_sou(x) \
39 	container_of(x, struct vmw_screen_object_unit, base.encoder)
40 #define vmw_connector_to_sou(x) \
41 	container_of(x, struct vmw_screen_object_unit, base.connector)
42 
43 /**
44  * struct vmw_kms_sou_surface_dirty - Closure structure for
45  * blit surface to screen command.
46  * @base: The base type we derive from. Used by vmw_kms_helper_dirty().
47  * @left: Left side of bounding box.
48  * @right: Right side of bounding box.
49  * @top: Top side of bounding box.
50  * @bottom: Bottom side of bounding box.
51  * @dst_x: Difference between source clip rects and framebuffer coordinates.
52  * @dst_y: Difference between source clip rects and framebuffer coordinates.
53  * @sid: Surface id of surface to copy from.
54  */
55 struct vmw_kms_sou_surface_dirty {
56 	struct vmw_kms_dirty base;
57 	s32 left, right, top, bottom;
58 	s32 dst_x, dst_y;
59 	u32 sid;
60 };
61 
62 /*
63  * SVGA commands that are used by this code. Please see the device headers
64  * for explanation.
65  */
66 struct vmw_kms_sou_readback_blit {
67 	uint32 header;
68 	SVGAFifoCmdBlitScreenToGMRFB body;
69 };
70 
71 struct vmw_kms_sou_bo_blit {
72 	uint32 header;
73 	SVGAFifoCmdBlitGMRFBToScreen body;
74 };
75 
76 struct vmw_kms_sou_dirty_cmd {
77 	SVGA3dCmdHeader header;
78 	SVGA3dCmdBlitSurfaceToScreen body;
79 };
80 
81 struct vmw_kms_sou_define_gmrfb {
82 	uint32_t header;
83 	SVGAFifoCmdDefineGMRFB body;
84 };
85 
86 /*
87  * Display unit using screen objects.
88  */
89 struct vmw_screen_object_unit {
90 	struct vmw_display_unit base;
91 
92 	unsigned long buffer_size; /**< Size of allocated buffer */
93 	struct vmw_bo *buffer; /**< Backing store buffer */
94 
95 	bool defined;
96 };
97 
vmw_sou_destroy(struct vmw_screen_object_unit * sou)98 static void vmw_sou_destroy(struct vmw_screen_object_unit *sou)
99 {
100 	vmw_du_cleanup(&sou->base);
101 	kfree(sou);
102 }
103 
104 
105 /*
106  * Screen Object Display Unit CRTC functions
107  */
108 
vmw_sou_crtc_destroy(struct drm_crtc * crtc)109 static void vmw_sou_crtc_destroy(struct drm_crtc *crtc)
110 {
111 	vmw_sou_destroy(vmw_crtc_to_sou(crtc));
112 }
113 
114 /*
115  * Send the fifo command to create a screen.
116  */
vmw_sou_fifo_create(struct vmw_private * dev_priv,struct vmw_screen_object_unit * sou,int x,int y,struct drm_display_mode * mode)117 static int vmw_sou_fifo_create(struct vmw_private *dev_priv,
118 			       struct vmw_screen_object_unit *sou,
119 			       int x, int y,
120 			       struct drm_display_mode *mode)
121 {
122 	size_t fifo_size;
123 
124 	struct {
125 		struct {
126 			uint32_t cmdType;
127 		} header;
128 		SVGAScreenObject obj;
129 	} *cmd;
130 
131 	BUG_ON(!sou->buffer);
132 
133 	fifo_size = sizeof(*cmd);
134 	cmd = VMW_CMD_RESERVE(dev_priv, fifo_size);
135 	if (unlikely(cmd == NULL))
136 		return -ENOMEM;
137 
138 	memset(cmd, 0, fifo_size);
139 	cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN;
140 	cmd->obj.structSize = sizeof(SVGAScreenObject);
141 	cmd->obj.id = sou->base.unit;
142 	cmd->obj.flags = SVGA_SCREEN_HAS_ROOT |
143 		(sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0);
144 	cmd->obj.size.width = mode->hdisplay;
145 	cmd->obj.size.height = mode->vdisplay;
146 	cmd->obj.root.x = x;
147 	cmd->obj.root.y = y;
148 	sou->base.set_gui_x = cmd->obj.root.x;
149 	sou->base.set_gui_y = cmd->obj.root.y;
150 
151 	/* Ok to assume that buffer is pinned in vram */
152 	vmw_bo_get_guest_ptr(&sou->buffer->tbo, &cmd->obj.backingStore.ptr);
153 	cmd->obj.backingStore.pitch = mode->hdisplay * 4;
154 
155 	vmw_cmd_commit(dev_priv, fifo_size);
156 
157 	sou->defined = true;
158 
159 	return 0;
160 }
161 
162 /*
163  * Send the fifo command to destroy a screen.
164  */
vmw_sou_fifo_destroy(struct vmw_private * dev_priv,struct vmw_screen_object_unit * sou)165 static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv,
166 				struct vmw_screen_object_unit *sou)
167 {
168 	size_t fifo_size;
169 	int ret;
170 
171 	struct {
172 		struct {
173 			uint32_t cmdType;
174 		} header;
175 		SVGAFifoCmdDestroyScreen body;
176 	} *cmd;
177 
178 	/* no need to do anything */
179 	if (unlikely(!sou->defined))
180 		return 0;
181 
182 	fifo_size = sizeof(*cmd);
183 	cmd = VMW_CMD_RESERVE(dev_priv, fifo_size);
184 	if (unlikely(cmd == NULL))
185 		return -ENOMEM;
186 
187 	memset(cmd, 0, fifo_size);
188 	cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN;
189 	cmd->body.screenId = sou->base.unit;
190 
191 	vmw_cmd_commit(dev_priv, fifo_size);
192 
193 	/* Force sync */
194 	ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ);
195 	if (unlikely(ret != 0))
196 		DRM_ERROR("Failed to sync with HW");
197 	else
198 		sou->defined = false;
199 
200 	return ret;
201 }
202 
203 /**
204  * vmw_sou_crtc_mode_set_nofb - Create new screen
205  *
206  * @crtc: CRTC associated with the new screen
207  *
208  * This function creates/destroys a screen.  This function cannot fail, so if
209  * somehow we run into a failure, just do the best we can to get out.
210  */
vmw_sou_crtc_mode_set_nofb(struct drm_crtc * crtc)211 static void vmw_sou_crtc_mode_set_nofb(struct drm_crtc *crtc)
212 {
213 	struct vmw_private *dev_priv;
214 	struct vmw_screen_object_unit *sou;
215 	struct vmw_framebuffer *vfb;
216 	struct drm_framebuffer *fb;
217 	struct drm_plane_state *ps;
218 	struct vmw_plane_state *vps;
219 	int ret;
220 
221 	sou = vmw_crtc_to_sou(crtc);
222 	dev_priv = vmw_priv(crtc->dev);
223 	ps = crtc->primary->state;
224 	fb = ps->fb;
225 	vps = vmw_plane_state_to_vps(ps);
226 
227 	vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
228 
229 	if (sou->defined) {
230 		ret = vmw_sou_fifo_destroy(dev_priv, sou);
231 		if (ret) {
232 			DRM_ERROR("Failed to destroy Screen Object\n");
233 			return;
234 		}
235 	}
236 
237 	if (vfb) {
238 		struct drm_connector_state *conn_state;
239 		struct vmw_connector_state *vmw_conn_state;
240 		int x, y;
241 
242 		sou->buffer = vps->bo;
243 		sou->buffer_size = vps->bo_size;
244 
245 		conn_state = sou->base.connector.state;
246 		vmw_conn_state = vmw_connector_state_to_vcs(conn_state);
247 
248 		x = vmw_conn_state->gui_x;
249 		y = vmw_conn_state->gui_y;
250 
251 		ret = vmw_sou_fifo_create(dev_priv, sou, x, y, &crtc->mode);
252 		if (ret)
253 			DRM_ERROR("Failed to define Screen Object %dx%d\n",
254 				  crtc->x, crtc->y);
255 
256 	} else {
257 		sou->buffer = NULL;
258 		sou->buffer_size = 0;
259 	}
260 }
261 
262 /**
263  * vmw_sou_crtc_helper_prepare - Noop
264  *
265  * @crtc:  CRTC associated with the new screen
266  *
267  * Prepares the CRTC for a mode set, but we don't need to do anything here.
268  */
vmw_sou_crtc_helper_prepare(struct drm_crtc * crtc)269 static void vmw_sou_crtc_helper_prepare(struct drm_crtc *crtc)
270 {
271 }
272 
273 /**
274  * vmw_sou_crtc_atomic_enable - Noop
275  *
276  * @crtc: CRTC associated with the new screen
277  * @state: Unused
278  *
279  * This is called after a mode set has been completed.
280  */
vmw_sou_crtc_atomic_enable(struct drm_crtc * crtc,struct drm_atomic_state * state)281 static void vmw_sou_crtc_atomic_enable(struct drm_crtc *crtc,
282 				       struct drm_atomic_state *state)
283 {
284 }
285 
286 /**
287  * vmw_sou_crtc_atomic_disable - Turns off CRTC
288  *
289  * @crtc: CRTC to be turned off
290  * @state: Unused
291  */
vmw_sou_crtc_atomic_disable(struct drm_crtc * crtc,struct drm_atomic_state * state)292 static void vmw_sou_crtc_atomic_disable(struct drm_crtc *crtc,
293 					struct drm_atomic_state *state)
294 {
295 	struct vmw_private *dev_priv;
296 	struct vmw_screen_object_unit *sou;
297 	int ret;
298 
299 
300 	if (!crtc) {
301 		DRM_ERROR("CRTC is NULL\n");
302 		return;
303 	}
304 
305 	sou = vmw_crtc_to_sou(crtc);
306 	dev_priv = vmw_priv(crtc->dev);
307 
308 	if (sou->defined) {
309 		ret = vmw_sou_fifo_destroy(dev_priv, sou);
310 		if (ret)
311 			DRM_ERROR("Failed to destroy Screen Object\n");
312 	}
313 }
314 
315 static const struct drm_crtc_funcs vmw_screen_object_crtc_funcs = {
316 	.gamma_set = vmw_du_crtc_gamma_set,
317 	.destroy = vmw_sou_crtc_destroy,
318 	.reset = vmw_du_crtc_reset,
319 	.atomic_duplicate_state = vmw_du_crtc_duplicate_state,
320 	.atomic_destroy_state = vmw_du_crtc_destroy_state,
321 	.set_config = drm_atomic_helper_set_config,
322 	.page_flip = drm_atomic_helper_page_flip,
323 };
324 
325 /*
326  * Screen Object Display Unit encoder functions
327  */
328 
vmw_sou_encoder_destroy(struct drm_encoder * encoder)329 static void vmw_sou_encoder_destroy(struct drm_encoder *encoder)
330 {
331 	vmw_sou_destroy(vmw_encoder_to_sou(encoder));
332 }
333 
334 static const struct drm_encoder_funcs vmw_screen_object_encoder_funcs = {
335 	.destroy = vmw_sou_encoder_destroy,
336 };
337 
338 /*
339  * Screen Object Display Unit connector functions
340  */
341 
vmw_sou_connector_destroy(struct drm_connector * connector)342 static void vmw_sou_connector_destroy(struct drm_connector *connector)
343 {
344 	vmw_sou_destroy(vmw_connector_to_sou(connector));
345 }
346 
347 static const struct drm_connector_funcs vmw_sou_connector_funcs = {
348 	.dpms = vmw_du_connector_dpms,
349 	.detect = vmw_du_connector_detect,
350 	.fill_modes = drm_helper_probe_single_connector_modes,
351 	.destroy = vmw_sou_connector_destroy,
352 	.reset = vmw_du_connector_reset,
353 	.atomic_duplicate_state = vmw_du_connector_duplicate_state,
354 	.atomic_destroy_state = vmw_du_connector_destroy_state,
355 };
356 
357 
358 static const struct
359 drm_connector_helper_funcs vmw_sou_connector_helper_funcs = {
360 	.get_modes = vmw_connector_get_modes,
361 	.mode_valid = vmw_connector_mode_valid
362 };
363 
364 
365 
366 /*
367  * Screen Object Display Plane Functions
368  */
369 
370 /**
371  * vmw_sou_primary_plane_cleanup_fb - Frees sou backing buffer
372  *
373  * @plane:  display plane
374  * @old_state: Contains the FB to clean up
375  *
376  * Unpins the display surface
377  *
378  * Returns 0 on success
379  */
380 static void
vmw_sou_primary_plane_cleanup_fb(struct drm_plane * plane,struct drm_plane_state * old_state)381 vmw_sou_primary_plane_cleanup_fb(struct drm_plane *plane,
382 				 struct drm_plane_state *old_state)
383 {
384 	struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
385 	struct drm_crtc *crtc = plane->state->crtc ?
386 		plane->state->crtc : old_state->crtc;
387 
388 	if (vps->bo)
389 		vmw_bo_unpin(vmw_priv(crtc->dev), vps->bo, false);
390 	vmw_bo_unreference(&vps->bo);
391 	vps->bo_size = 0;
392 
393 	vmw_du_plane_cleanup_fb(plane, old_state);
394 }
395 
396 
397 /**
398  * vmw_sou_primary_plane_prepare_fb - allocate backing buffer
399  *
400  * @plane:  display plane
401  * @new_state: info on the new plane state, including the FB
402  *
403  * The SOU backing buffer is our equivalent of the display plane.
404  *
405  * Returns 0 on success
406  */
407 static int
vmw_sou_primary_plane_prepare_fb(struct drm_plane * plane,struct drm_plane_state * new_state)408 vmw_sou_primary_plane_prepare_fb(struct drm_plane *plane,
409 				 struct drm_plane_state *new_state)
410 {
411 	struct drm_framebuffer *new_fb = new_state->fb;
412 	struct drm_crtc *crtc = plane->state->crtc ?: new_state->crtc;
413 	struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
414 	struct vmw_private *dev_priv;
415 	int ret;
416 	struct vmw_bo_params bo_params = {
417 		.domain = VMW_BO_DOMAIN_VRAM,
418 		.busy_domain = VMW_BO_DOMAIN_VRAM,
419 		.bo_type = ttm_bo_type_device,
420 		.pin = true
421 	};
422 
423 	if (!new_fb) {
424 		vmw_bo_unreference(&vps->bo);
425 		vps->bo_size = 0;
426 
427 		return 0;
428 	}
429 
430 	bo_params.size = new_state->crtc_w * new_state->crtc_h * 4;
431 	dev_priv = vmw_priv(crtc->dev);
432 
433 	if (vps->bo) {
434 		if (vps->bo_size == bo_params.size) {
435 			/*
436 			 * Note that this might temporarily up the pin-count
437 			 * to 2, until cleanup_fb() is called.
438 			 */
439 			return vmw_bo_pin_in_vram(dev_priv, vps->bo,
440 						      true);
441 		}
442 
443 		vmw_bo_unreference(&vps->bo);
444 		vps->bo_size = 0;
445 	}
446 
447 	vmw_svga_enable(dev_priv);
448 
449 	/* After we have alloced the backing store might not be able to
450 	 * resume the overlays, this is preferred to failing to alloc.
451 	 */
452 	vmw_overlay_pause_all(dev_priv);
453 	ret = vmw_bo_create(dev_priv, &bo_params, &vps->bo);
454 	vmw_overlay_resume_all(dev_priv);
455 	if (ret)
456 		return ret;
457 
458 	vps->bo_size = bo_params.size;
459 
460 	/*
461 	 * TTM already thinks the buffer is pinned, but make sure the
462 	 * pin_count is upped.
463 	 */
464 	return vmw_bo_pin_in_vram(dev_priv, vps->bo, true);
465 }
466 
vmw_sou_bo_fifo_size(struct vmw_du_update_plane * update,uint32_t num_hits)467 static uint32_t vmw_sou_bo_fifo_size(struct vmw_du_update_plane *update,
468 				     uint32_t num_hits)
469 {
470 	return sizeof(struct vmw_kms_sou_define_gmrfb) +
471 		sizeof(struct vmw_kms_sou_bo_blit) * num_hits;
472 }
473 
vmw_sou_bo_define_gmrfb(struct vmw_du_update_plane * update,void * cmd)474 static uint32_t vmw_sou_bo_define_gmrfb(struct vmw_du_update_plane *update,
475 					void *cmd)
476 {
477 	struct vmw_framebuffer_bo *vfbbo =
478 		container_of(update->vfb, typeof(*vfbbo), base);
479 	struct vmw_kms_sou_define_gmrfb *gmr = cmd;
480 	int depth = update->vfb->base.format->depth;
481 
482 	/* Emulate RGBA support, contrary to svga_reg.h this is not
483 	 * supported by hosts. This is only a problem if we are reading
484 	 * this value later and expecting what we uploaded back.
485 	 */
486 	if (depth == 32)
487 		depth = 24;
488 
489 	gmr->header = SVGA_CMD_DEFINE_GMRFB;
490 
491 	gmr->body.format.bitsPerPixel = update->vfb->base.format->cpp[0] * 8;
492 	gmr->body.format.colorDepth = depth;
493 	gmr->body.format.reserved = 0;
494 	gmr->body.bytesPerLine = update->vfb->base.pitches[0];
495 	vmw_bo_get_guest_ptr(&vfbbo->buffer->tbo, &gmr->body.ptr);
496 
497 	return sizeof(*gmr);
498 }
499 
vmw_sou_bo_populate_clip(struct vmw_du_update_plane * update,void * cmd,struct drm_rect * clip,uint32_t fb_x,uint32_t fb_y)500 static uint32_t vmw_sou_bo_populate_clip(struct vmw_du_update_plane  *update,
501 					 void *cmd, struct drm_rect *clip,
502 					 uint32_t fb_x, uint32_t fb_y)
503 {
504 	struct vmw_kms_sou_bo_blit *blit = cmd;
505 
506 	blit->header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN;
507 	blit->body.destScreenId = update->du->unit;
508 	blit->body.srcOrigin.x = fb_x;
509 	blit->body.srcOrigin.y = fb_y;
510 	blit->body.destRect.left = clip->x1;
511 	blit->body.destRect.top = clip->y1;
512 	blit->body.destRect.right = clip->x2;
513 	blit->body.destRect.bottom = clip->y2;
514 
515 	return sizeof(*blit);
516 }
517 
vmw_stud_bo_post_clip(struct vmw_du_update_plane * update,void * cmd,struct drm_rect * bb)518 static uint32_t vmw_stud_bo_post_clip(struct vmw_du_update_plane  *update,
519 				      void *cmd, struct drm_rect *bb)
520 {
521 	return 0;
522 }
523 
524 /**
525  * vmw_sou_plane_update_bo - Update display unit for bo backed fb.
526  * @dev_priv: Device private.
527  * @plane: Plane state.
528  * @old_state: Old plane state.
529  * @vfb: Framebuffer which is blitted to display unit.
530  * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj.
531  *             The returned fence pointer may be NULL in which case the device
532  *             has already synchronized.
533  *
534  * Return: 0 on success or a negative error code on failure.
535  */
vmw_sou_plane_update_bo(struct vmw_private * dev_priv,struct drm_plane * plane,struct drm_plane_state * old_state,struct vmw_framebuffer * vfb,struct vmw_fence_obj ** out_fence)536 static int vmw_sou_plane_update_bo(struct vmw_private *dev_priv,
537 				   struct drm_plane *plane,
538 				   struct drm_plane_state *old_state,
539 				   struct vmw_framebuffer *vfb,
540 				   struct vmw_fence_obj **out_fence)
541 {
542 	struct vmw_du_update_plane_buffer bo_update;
543 
544 	memset(&bo_update, 0, sizeof(struct vmw_du_update_plane_buffer));
545 	bo_update.base.plane = plane;
546 	bo_update.base.old_state = old_state;
547 	bo_update.base.dev_priv = dev_priv;
548 	bo_update.base.du = vmw_crtc_to_du(plane->state->crtc);
549 	bo_update.base.vfb = vfb;
550 	bo_update.base.out_fence = out_fence;
551 	bo_update.base.mutex = NULL;
552 	bo_update.base.intr = true;
553 
554 	bo_update.base.calc_fifo_size = vmw_sou_bo_fifo_size;
555 	bo_update.base.post_prepare = vmw_sou_bo_define_gmrfb;
556 	bo_update.base.clip = vmw_sou_bo_populate_clip;
557 	bo_update.base.post_clip = vmw_stud_bo_post_clip;
558 
559 	return vmw_du_helper_plane_update(&bo_update.base);
560 }
561 
vmw_sou_surface_fifo_size(struct vmw_du_update_plane * update,uint32_t num_hits)562 static uint32_t vmw_sou_surface_fifo_size(struct vmw_du_update_plane *update,
563 					  uint32_t num_hits)
564 {
565 	return sizeof(struct vmw_kms_sou_dirty_cmd) + sizeof(SVGASignedRect) *
566 		num_hits;
567 }
568 
vmw_sou_surface_post_prepare(struct vmw_du_update_plane * update,void * cmd)569 static uint32_t vmw_sou_surface_post_prepare(struct vmw_du_update_plane *update,
570 					     void *cmd)
571 {
572 	struct vmw_du_update_plane_surface *srf_update;
573 
574 	srf_update = container_of(update, typeof(*srf_update), base);
575 
576 	/*
577 	 * SOU SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN is special in the sense that
578 	 * its bounding box is filled before iterating over all the clips. So
579 	 * store the FIFO start address and revisit to fill the details.
580 	 */
581 	srf_update->cmd_start = cmd;
582 
583 	return 0;
584 }
585 
vmw_sou_surface_pre_clip(struct vmw_du_update_plane * update,void * cmd,uint32_t num_hits)586 static uint32_t vmw_sou_surface_pre_clip(struct vmw_du_update_plane *update,
587 					 void *cmd, uint32_t num_hits)
588 {
589 	struct vmw_kms_sou_dirty_cmd *blit = cmd;
590 	struct vmw_framebuffer_surface *vfbs;
591 
592 	vfbs = container_of(update->vfb, typeof(*vfbs), base);
593 
594 	blit->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN;
595 	blit->header.size = sizeof(blit->body) + sizeof(SVGASignedRect) *
596 		num_hits;
597 
598 	blit->body.srcImage.sid = vfbs->surface->res.id;
599 	blit->body.destScreenId = update->du->unit;
600 
601 	/* Update the source and destination bounding box later in post_clip */
602 	blit->body.srcRect.left = 0;
603 	blit->body.srcRect.top = 0;
604 	blit->body.srcRect.right = 0;
605 	blit->body.srcRect.bottom = 0;
606 
607 	blit->body.destRect.left = 0;
608 	blit->body.destRect.top = 0;
609 	blit->body.destRect.right = 0;
610 	blit->body.destRect.bottom = 0;
611 
612 	return sizeof(*blit);
613 }
614 
vmw_sou_surface_clip_rect(struct vmw_du_update_plane * update,void * cmd,struct drm_rect * clip,uint32_t src_x,uint32_t src_y)615 static uint32_t vmw_sou_surface_clip_rect(struct vmw_du_update_plane *update,
616 					  void *cmd, struct drm_rect *clip,
617 					  uint32_t src_x, uint32_t src_y)
618 {
619 	SVGASignedRect *rect = cmd;
620 
621 	/*
622 	 * rects are relative to dest bounding box rect on screen object, so
623 	 * translate to it later in post_clip
624 	 */
625 	rect->left = clip->x1;
626 	rect->top = clip->y1;
627 	rect->right = clip->x2;
628 	rect->bottom = clip->y2;
629 
630 	return sizeof(*rect);
631 }
632 
vmw_sou_surface_post_clip(struct vmw_du_update_plane * update,void * cmd,struct drm_rect * bb)633 static uint32_t vmw_sou_surface_post_clip(struct vmw_du_update_plane *update,
634 					  void *cmd, struct drm_rect *bb)
635 {
636 	struct vmw_du_update_plane_surface *srf_update;
637 	struct drm_plane_state *state = update->plane->state;
638 	struct drm_rect src_bb;
639 	struct vmw_kms_sou_dirty_cmd *blit;
640 	SVGASignedRect *rect;
641 	uint32_t num_hits;
642 	int translate_src_x;
643 	int translate_src_y;
644 	int i;
645 
646 	srf_update = container_of(update, typeof(*srf_update), base);
647 
648 	blit = srf_update->cmd_start;
649 	rect = (SVGASignedRect *)&blit[1];
650 
651 	num_hits = (blit->header.size - sizeof(blit->body))/
652 		sizeof(SVGASignedRect);
653 
654 	src_bb = *bb;
655 
656 	/* To translate bb back to fb src coord */
657 	translate_src_x = (state->src_x >> 16) - state->crtc_x;
658 	translate_src_y = (state->src_y >> 16) - state->crtc_y;
659 
660 	drm_rect_translate(&src_bb, translate_src_x, translate_src_y);
661 
662 	blit->body.srcRect.left = src_bb.x1;
663 	blit->body.srcRect.top = src_bb.y1;
664 	blit->body.srcRect.right = src_bb.x2;
665 	blit->body.srcRect.bottom = src_bb.y2;
666 
667 	blit->body.destRect.left = bb->x1;
668 	blit->body.destRect.top = bb->y1;
669 	blit->body.destRect.right = bb->x2;
670 	blit->body.destRect.bottom = bb->y2;
671 
672 	/* rects are relative to dest bb rect */
673 	for (i = 0; i < num_hits; i++) {
674 		rect->left -= bb->x1;
675 		rect->top -= bb->y1;
676 		rect->right -= bb->x1;
677 		rect->bottom -= bb->y1;
678 		rect++;
679 	}
680 
681 	return 0;
682 }
683 
684 /**
685  * vmw_sou_plane_update_surface - Update display unit for surface backed fb.
686  * @dev_priv: Device private.
687  * @plane: Plane state.
688  * @old_state: Old plane state.
689  * @vfb: Framebuffer which is blitted to display unit
690  * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj.
691  *             The returned fence pointer may be NULL in which case the device
692  *             has already synchronized.
693  *
694  * Return: 0 on success or a negative error code on failure.
695  */
vmw_sou_plane_update_surface(struct vmw_private * dev_priv,struct drm_plane * plane,struct drm_plane_state * old_state,struct vmw_framebuffer * vfb,struct vmw_fence_obj ** out_fence)696 static int vmw_sou_plane_update_surface(struct vmw_private *dev_priv,
697 					struct drm_plane *plane,
698 					struct drm_plane_state *old_state,
699 					struct vmw_framebuffer *vfb,
700 					struct vmw_fence_obj **out_fence)
701 {
702 	struct vmw_du_update_plane_surface srf_update;
703 
704 	memset(&srf_update, 0, sizeof(struct vmw_du_update_plane_surface));
705 	srf_update.base.plane = plane;
706 	srf_update.base.old_state = old_state;
707 	srf_update.base.dev_priv = dev_priv;
708 	srf_update.base.du = vmw_crtc_to_du(plane->state->crtc);
709 	srf_update.base.vfb = vfb;
710 	srf_update.base.out_fence = out_fence;
711 	srf_update.base.mutex = &dev_priv->cmdbuf_mutex;
712 	srf_update.base.intr = true;
713 
714 	srf_update.base.calc_fifo_size = vmw_sou_surface_fifo_size;
715 	srf_update.base.post_prepare = vmw_sou_surface_post_prepare;
716 	srf_update.base.pre_clip = vmw_sou_surface_pre_clip;
717 	srf_update.base.clip = vmw_sou_surface_clip_rect;
718 	srf_update.base.post_clip = vmw_sou_surface_post_clip;
719 
720 	return vmw_du_helper_plane_update(&srf_update.base);
721 }
722 
723 static void
vmw_sou_primary_plane_atomic_update(struct drm_plane * plane,struct drm_atomic_state * state)724 vmw_sou_primary_plane_atomic_update(struct drm_plane *plane,
725 				    struct drm_atomic_state *state)
726 {
727 	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, plane);
728 	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane);
729 	struct drm_crtc *crtc = new_state->crtc;
730 	struct vmw_fence_obj *fence = NULL;
731 	int ret;
732 
733 	/* In case of device error, maintain consistent atomic state */
734 	if (crtc && new_state->fb) {
735 		struct vmw_private *dev_priv = vmw_priv(crtc->dev);
736 		struct vmw_framebuffer *vfb =
737 			vmw_framebuffer_to_vfb(new_state->fb);
738 
739 		if (vfb->bo)
740 			ret = vmw_sou_plane_update_bo(dev_priv, plane,
741 						      old_state, vfb, &fence);
742 		else
743 			ret = vmw_sou_plane_update_surface(dev_priv, plane,
744 							   old_state, vfb,
745 							   &fence);
746 		if (ret != 0)
747 			DRM_ERROR("Failed to update screen.\n");
748 	} else {
749 		/* Do nothing when fb and crtc is NULL (blank crtc) */
750 		return;
751 	}
752 
753 	if (fence)
754 		vmw_fence_obj_unreference(&fence);
755 }
756 
757 
758 static const struct drm_plane_funcs vmw_sou_plane_funcs = {
759 	.update_plane = drm_atomic_helper_update_plane,
760 	.disable_plane = drm_atomic_helper_disable_plane,
761 	.destroy = vmw_du_primary_plane_destroy,
762 	.reset = vmw_du_plane_reset,
763 	.atomic_duplicate_state = vmw_du_plane_duplicate_state,
764 	.atomic_destroy_state = vmw_du_plane_destroy_state,
765 };
766 
767 static const struct drm_plane_funcs vmw_sou_cursor_funcs = {
768 	.update_plane = drm_atomic_helper_update_plane,
769 	.disable_plane = drm_atomic_helper_disable_plane,
770 	.destroy = vmw_du_cursor_plane_destroy,
771 	.reset = vmw_du_plane_reset,
772 	.atomic_duplicate_state = vmw_du_plane_duplicate_state,
773 	.atomic_destroy_state = vmw_du_plane_destroy_state,
774 };
775 
776 /*
777  * Atomic Helpers
778  */
779 static const struct
780 drm_plane_helper_funcs vmw_sou_cursor_plane_helper_funcs = {
781 	.atomic_check = vmw_du_cursor_plane_atomic_check,
782 	.atomic_update = vmw_du_cursor_plane_atomic_update,
783 	.prepare_fb = vmw_du_cursor_plane_prepare_fb,
784 	.cleanup_fb = vmw_du_cursor_plane_cleanup_fb,
785 };
786 
787 static const struct
788 drm_plane_helper_funcs vmw_sou_primary_plane_helper_funcs = {
789 	.atomic_check = vmw_du_primary_plane_atomic_check,
790 	.atomic_update = vmw_sou_primary_plane_atomic_update,
791 	.prepare_fb = vmw_sou_primary_plane_prepare_fb,
792 	.cleanup_fb = vmw_sou_primary_plane_cleanup_fb,
793 };
794 
795 static const struct drm_crtc_helper_funcs vmw_sou_crtc_helper_funcs = {
796 	.prepare = vmw_sou_crtc_helper_prepare,
797 	.mode_set_nofb = vmw_sou_crtc_mode_set_nofb,
798 	.atomic_check = vmw_du_crtc_atomic_check,
799 	.atomic_begin = vmw_du_crtc_atomic_begin,
800 	.atomic_flush = vmw_du_crtc_atomic_flush,
801 	.atomic_enable = vmw_sou_crtc_atomic_enable,
802 	.atomic_disable = vmw_sou_crtc_atomic_disable,
803 };
804 
805 
vmw_sou_init(struct vmw_private * dev_priv,unsigned unit)806 static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit)
807 {
808 	struct vmw_screen_object_unit *sou;
809 	struct drm_device *dev = &dev_priv->drm;
810 	struct drm_connector *connector;
811 	struct drm_encoder *encoder;
812 	struct drm_plane *primary;
813 	struct vmw_cursor_plane *cursor;
814 	struct drm_crtc *crtc;
815 	int ret;
816 
817 	sou = kzalloc(sizeof(*sou), GFP_KERNEL);
818 	if (!sou)
819 		return -ENOMEM;
820 
821 	sou->base.unit = unit;
822 	crtc = &sou->base.crtc;
823 	encoder = &sou->base.encoder;
824 	connector = &sou->base.connector;
825 	primary = &sou->base.primary;
826 	cursor = &sou->base.cursor;
827 
828 	sou->base.pref_active = (unit == 0);
829 	sou->base.pref_width = dev_priv->initial_width;
830 	sou->base.pref_height = dev_priv->initial_height;
831 
832 	/*
833 	 * Remove this after enabling atomic because property values can
834 	 * only exist in a state object
835 	 */
836 	sou->base.is_implicit = false;
837 
838 	/* Initialize primary plane */
839 	ret = drm_universal_plane_init(dev, primary,
840 				       0, &vmw_sou_plane_funcs,
841 				       vmw_primary_plane_formats,
842 				       ARRAY_SIZE(vmw_primary_plane_formats),
843 				       NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
844 	if (ret) {
845 		DRM_ERROR("Failed to initialize primary plane");
846 		goto err_free;
847 	}
848 
849 	drm_plane_helper_add(primary, &vmw_sou_primary_plane_helper_funcs);
850 	drm_plane_enable_fb_damage_clips(primary);
851 
852 	/* Initialize cursor plane */
853 	ret = drm_universal_plane_init(dev, &cursor->base,
854 			0, &vmw_sou_cursor_funcs,
855 			vmw_cursor_plane_formats,
856 			ARRAY_SIZE(vmw_cursor_plane_formats),
857 			NULL, DRM_PLANE_TYPE_CURSOR, NULL);
858 	if (ret) {
859 		DRM_ERROR("Failed to initialize cursor plane");
860 		drm_plane_cleanup(&sou->base.primary);
861 		goto err_free;
862 	}
863 
864 	drm_plane_helper_add(&cursor->base, &vmw_sou_cursor_plane_helper_funcs);
865 
866 	ret = drm_connector_init(dev, connector, &vmw_sou_connector_funcs,
867 				 DRM_MODE_CONNECTOR_VIRTUAL);
868 	if (ret) {
869 		DRM_ERROR("Failed to initialize connector\n");
870 		goto err_free;
871 	}
872 
873 	drm_connector_helper_add(connector, &vmw_sou_connector_helper_funcs);
874 	connector->status = vmw_du_connector_detect(connector, true);
875 
876 	ret = drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs,
877 			       DRM_MODE_ENCODER_VIRTUAL, NULL);
878 	if (ret) {
879 		DRM_ERROR("Failed to initialize encoder\n");
880 		goto err_free_connector;
881 	}
882 
883 	(void) drm_connector_attach_encoder(connector, encoder);
884 	encoder->possible_crtcs = (1 << unit);
885 	encoder->possible_clones = 0;
886 
887 	ret = drm_connector_register(connector);
888 	if (ret) {
889 		DRM_ERROR("Failed to register connector\n");
890 		goto err_free_encoder;
891 	}
892 
893 	ret = drm_crtc_init_with_planes(dev, crtc, primary,
894 					&cursor->base,
895 					&vmw_screen_object_crtc_funcs, NULL);
896 	if (ret) {
897 		DRM_ERROR("Failed to initialize CRTC\n");
898 		goto err_free_unregister;
899 	}
900 
901 	drm_crtc_helper_add(crtc, &vmw_sou_crtc_helper_funcs);
902 
903 	drm_mode_crtc_set_gamma_size(crtc, 256);
904 
905 	drm_object_attach_property(&connector->base,
906 				   dev_priv->hotplug_mode_update_property, 1);
907 	drm_object_attach_property(&connector->base,
908 				   dev->mode_config.suggested_x_property, 0);
909 	drm_object_attach_property(&connector->base,
910 				   dev->mode_config.suggested_y_property, 0);
911 	return 0;
912 
913 err_free_unregister:
914 	drm_connector_unregister(connector);
915 err_free_encoder:
916 	drm_encoder_cleanup(encoder);
917 err_free_connector:
918 	drm_connector_cleanup(connector);
919 err_free:
920 	kfree(sou);
921 	return ret;
922 }
923 
vmw_kms_sou_init_display(struct vmw_private * dev_priv)924 int vmw_kms_sou_init_display(struct vmw_private *dev_priv)
925 {
926 	struct drm_device *dev = &dev_priv->drm;
927 	int i;
928 
929 	/* Screen objects won't work if GMR's aren't available */
930 	if (!dev_priv->has_gmr)
931 		return -ENOSYS;
932 
933 	if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) {
934 		return -ENOSYS;
935 	}
936 
937 	for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
938 		vmw_sou_init(dev_priv, i);
939 
940 	dev_priv->active_display_unit = vmw_du_screen_object;
941 
942 	drm_mode_config_reset(dev);
943 
944 	return 0;
945 }
946 
do_bo_define_gmrfb(struct vmw_private * dev_priv,struct vmw_framebuffer * framebuffer)947 static int do_bo_define_gmrfb(struct vmw_private *dev_priv,
948 				  struct vmw_framebuffer *framebuffer)
949 {
950 	struct vmw_bo *buf =
951 		container_of(framebuffer, struct vmw_framebuffer_bo,
952 			     base)->buffer;
953 	int depth = framebuffer->base.format->depth;
954 	struct {
955 		uint32_t header;
956 		SVGAFifoCmdDefineGMRFB body;
957 	} *cmd;
958 
959 	/* Emulate RGBA support, contrary to svga_reg.h this is not
960 	 * supported by hosts. This is only a problem if we are reading
961 	 * this value later and expecting what we uploaded back.
962 	 */
963 	if (depth == 32)
964 		depth = 24;
965 
966 	cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd));
967 	if (!cmd)
968 		return -ENOMEM;
969 
970 	cmd->header = SVGA_CMD_DEFINE_GMRFB;
971 	cmd->body.format.bitsPerPixel = framebuffer->base.format->cpp[0] * 8;
972 	cmd->body.format.colorDepth = depth;
973 	cmd->body.format.reserved = 0;
974 	cmd->body.bytesPerLine = framebuffer->base.pitches[0];
975 	/* Buffer is reserved in vram or GMR */
976 	vmw_bo_get_guest_ptr(&buf->tbo, &cmd->body.ptr);
977 	vmw_cmd_commit(dev_priv, sizeof(*cmd));
978 
979 	return 0;
980 }
981 
982 /**
983  * vmw_sou_surface_fifo_commit - Callback to fill in and submit a
984  * blit surface to screen command.
985  *
986  * @dirty: The closure structure.
987  *
988  * Fills in the missing fields in the command, and translates the cliprects
989  * to match the destination bounding box encoded.
990  */
vmw_sou_surface_fifo_commit(struct vmw_kms_dirty * dirty)991 static void vmw_sou_surface_fifo_commit(struct vmw_kms_dirty *dirty)
992 {
993 	struct vmw_kms_sou_surface_dirty *sdirty =
994 		container_of(dirty, typeof(*sdirty), base);
995 	struct vmw_kms_sou_dirty_cmd *cmd = dirty->cmd;
996 	s32 trans_x = dirty->unit->crtc.x - sdirty->dst_x;
997 	s32 trans_y = dirty->unit->crtc.y - sdirty->dst_y;
998 	size_t region_size = dirty->num_hits * sizeof(SVGASignedRect);
999 	SVGASignedRect *blit = (SVGASignedRect *) &cmd[1];
1000 	int i;
1001 
1002 	if (!dirty->num_hits) {
1003 		vmw_cmd_commit(dirty->dev_priv, 0);
1004 		return;
1005 	}
1006 
1007 	cmd->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN;
1008 	cmd->header.size = sizeof(cmd->body) + region_size;
1009 
1010 	/*
1011 	 * Use the destination bounding box to specify destination - and
1012 	 * source bounding regions.
1013 	 */
1014 	cmd->body.destRect.left = sdirty->left;
1015 	cmd->body.destRect.right = sdirty->right;
1016 	cmd->body.destRect.top = sdirty->top;
1017 	cmd->body.destRect.bottom = sdirty->bottom;
1018 
1019 	cmd->body.srcRect.left = sdirty->left + trans_x;
1020 	cmd->body.srcRect.right = sdirty->right + trans_x;
1021 	cmd->body.srcRect.top = sdirty->top + trans_y;
1022 	cmd->body.srcRect.bottom = sdirty->bottom + trans_y;
1023 
1024 	cmd->body.srcImage.sid = sdirty->sid;
1025 	cmd->body.destScreenId = dirty->unit->unit;
1026 
1027 	/* Blits are relative to the destination rect. Translate. */
1028 	for (i = 0; i < dirty->num_hits; ++i, ++blit) {
1029 		blit->left -= sdirty->left;
1030 		blit->right -= sdirty->left;
1031 		blit->top -= sdirty->top;
1032 		blit->bottom -= sdirty->top;
1033 	}
1034 
1035 	vmw_cmd_commit(dirty->dev_priv, region_size + sizeof(*cmd));
1036 
1037 	sdirty->left = sdirty->top = S32_MAX;
1038 	sdirty->right = sdirty->bottom = S32_MIN;
1039 }
1040 
1041 /**
1042  * vmw_sou_surface_clip - Callback to encode a blit surface to screen cliprect.
1043  *
1044  * @dirty: The closure structure
1045  *
1046  * Encodes a SVGASignedRect cliprect and updates the bounding box of the
1047  * BLIT_SURFACE_TO_SCREEN command.
1048  */
vmw_sou_surface_clip(struct vmw_kms_dirty * dirty)1049 static void vmw_sou_surface_clip(struct vmw_kms_dirty *dirty)
1050 {
1051 	struct vmw_kms_sou_surface_dirty *sdirty =
1052 		container_of(dirty, typeof(*sdirty), base);
1053 	struct vmw_kms_sou_dirty_cmd *cmd = dirty->cmd;
1054 	SVGASignedRect *blit = (SVGASignedRect *) &cmd[1];
1055 
1056 	/* Destination rect. */
1057 	blit += dirty->num_hits;
1058 	blit->left = dirty->unit_x1;
1059 	blit->top = dirty->unit_y1;
1060 	blit->right = dirty->unit_x2;
1061 	blit->bottom = dirty->unit_y2;
1062 
1063 	/* Destination bounding box */
1064 	sdirty->left = min_t(s32, sdirty->left, dirty->unit_x1);
1065 	sdirty->top = min_t(s32, sdirty->top, dirty->unit_y1);
1066 	sdirty->right = max_t(s32, sdirty->right, dirty->unit_x2);
1067 	sdirty->bottom = max_t(s32, sdirty->bottom, dirty->unit_y2);
1068 
1069 	dirty->num_hits++;
1070 }
1071 
1072 /**
1073  * vmw_kms_sou_do_surface_dirty - Dirty part of a surface backed framebuffer
1074  *
1075  * @dev_priv: Pointer to the device private structure.
1076  * @framebuffer: Pointer to the surface-buffer backed framebuffer.
1077  * @clips: Array of clip rects. Either @clips or @vclips must be NULL.
1078  * @vclips: Alternate array of clip rects. Either @clips or @vclips must
1079  * be NULL.
1080  * @srf: Pointer to surface to blit from. If NULL, the surface attached
1081  * to @framebuffer will be used.
1082  * @dest_x: X coordinate offset to align @srf with framebuffer coordinates.
1083  * @dest_y: Y coordinate offset to align @srf with framebuffer coordinates.
1084  * @num_clips: Number of clip rects in @clips.
1085  * @inc: Increment to use when looping over @clips.
1086  * @out_fence: If non-NULL, will return a ref-counted pointer to a
1087  * struct vmw_fence_obj. The returned fence pointer may be NULL in which
1088  * case the device has already synchronized.
1089  * @crtc: If crtc is passed, perform surface dirty on that crtc only.
1090  *
1091  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
1092  * interrupted.
1093  */
vmw_kms_sou_do_surface_dirty(struct vmw_private * dev_priv,struct vmw_framebuffer * framebuffer,struct drm_clip_rect * clips,struct drm_vmw_rect * vclips,struct vmw_resource * srf,s32 dest_x,s32 dest_y,unsigned num_clips,int inc,struct vmw_fence_obj ** out_fence,struct drm_crtc * crtc)1094 int vmw_kms_sou_do_surface_dirty(struct vmw_private *dev_priv,
1095 				 struct vmw_framebuffer *framebuffer,
1096 				 struct drm_clip_rect *clips,
1097 				 struct drm_vmw_rect *vclips,
1098 				 struct vmw_resource *srf,
1099 				 s32 dest_x,
1100 				 s32 dest_y,
1101 				 unsigned num_clips, int inc,
1102 				 struct vmw_fence_obj **out_fence,
1103 				 struct drm_crtc *crtc)
1104 {
1105 	struct vmw_framebuffer_surface *vfbs =
1106 		container_of(framebuffer, typeof(*vfbs), base);
1107 	struct vmw_kms_sou_surface_dirty sdirty;
1108 	DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
1109 	int ret;
1110 
1111 	if (!srf)
1112 		srf = &vfbs->surface->res;
1113 
1114 	ret = vmw_validation_add_resource(&val_ctx, srf, 0, VMW_RES_DIRTY_NONE,
1115 					  NULL, NULL);
1116 	if (ret)
1117 		return ret;
1118 
1119 	ret = vmw_validation_prepare(&val_ctx, &dev_priv->cmdbuf_mutex, true);
1120 	if (ret)
1121 		goto out_unref;
1122 
1123 	sdirty.base.fifo_commit = vmw_sou_surface_fifo_commit;
1124 	sdirty.base.clip = vmw_sou_surface_clip;
1125 	sdirty.base.dev_priv = dev_priv;
1126 	sdirty.base.fifo_reserve_size = sizeof(struct vmw_kms_sou_dirty_cmd) +
1127 	  sizeof(SVGASignedRect) * num_clips;
1128 	sdirty.base.crtc = crtc;
1129 
1130 	sdirty.sid = srf->id;
1131 	sdirty.left = sdirty.top = S32_MAX;
1132 	sdirty.right = sdirty.bottom = S32_MIN;
1133 	sdirty.dst_x = dest_x;
1134 	sdirty.dst_y = dest_y;
1135 
1136 	ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
1137 				   dest_x, dest_y, num_clips, inc,
1138 				   &sdirty.base);
1139 	vmw_kms_helper_validation_finish(dev_priv, NULL, &val_ctx, out_fence,
1140 					 NULL);
1141 
1142 	return ret;
1143 
1144 out_unref:
1145 	vmw_validation_unref_lists(&val_ctx);
1146 	return ret;
1147 }
1148 
1149 /**
1150  * vmw_sou_bo_fifo_commit - Callback to submit a set of readback clips.
1151  *
1152  * @dirty: The closure structure.
1153  *
1154  * Commits a previously built command buffer of readback clips.
1155  */
vmw_sou_bo_fifo_commit(struct vmw_kms_dirty * dirty)1156 static void vmw_sou_bo_fifo_commit(struct vmw_kms_dirty *dirty)
1157 {
1158 	if (!dirty->num_hits) {
1159 		vmw_cmd_commit(dirty->dev_priv, 0);
1160 		return;
1161 	}
1162 
1163 	vmw_cmd_commit(dirty->dev_priv,
1164 			sizeof(struct vmw_kms_sou_bo_blit) *
1165 			dirty->num_hits);
1166 }
1167 
1168 /**
1169  * vmw_sou_bo_clip - Callback to encode a readback cliprect.
1170  *
1171  * @dirty: The closure structure
1172  *
1173  * Encodes a BLIT_GMRFB_TO_SCREEN cliprect.
1174  */
vmw_sou_bo_clip(struct vmw_kms_dirty * dirty)1175 static void vmw_sou_bo_clip(struct vmw_kms_dirty *dirty)
1176 {
1177 	struct vmw_kms_sou_bo_blit *blit = dirty->cmd;
1178 
1179 	blit += dirty->num_hits;
1180 	blit->header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN;
1181 	blit->body.destScreenId = dirty->unit->unit;
1182 	blit->body.srcOrigin.x = dirty->fb_x;
1183 	blit->body.srcOrigin.y = dirty->fb_y;
1184 	blit->body.destRect.left = dirty->unit_x1;
1185 	blit->body.destRect.top = dirty->unit_y1;
1186 	blit->body.destRect.right = dirty->unit_x2;
1187 	blit->body.destRect.bottom = dirty->unit_y2;
1188 	dirty->num_hits++;
1189 }
1190 
1191 /**
1192  * vmw_kms_sou_do_bo_dirty - Dirty part of a buffer-object backed framebuffer
1193  *
1194  * @dev_priv: Pointer to the device private structure.
1195  * @framebuffer: Pointer to the buffer-object backed framebuffer.
1196  * @clips: Array of clip rects.
1197  * @vclips: Alternate array of clip rects. Either @clips or @vclips must
1198  * be NULL.
1199  * @num_clips: Number of clip rects in @clips.
1200  * @increment: Increment to use when looping over @clips.
1201  * @interruptible: Whether to perform waits interruptible if possible.
1202  * @out_fence: If non-NULL, will return a ref-counted pointer to a
1203  * struct vmw_fence_obj. The returned fence pointer may be NULL in which
1204  * case the device has already synchronized.
1205  * @crtc: If crtc is passed, perform bo dirty on that crtc only.
1206  *
1207  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
1208  * interrupted.
1209  */
vmw_kms_sou_do_bo_dirty(struct vmw_private * dev_priv,struct vmw_framebuffer * framebuffer,struct drm_clip_rect * clips,struct drm_vmw_rect * vclips,unsigned num_clips,int increment,bool interruptible,struct vmw_fence_obj ** out_fence,struct drm_crtc * crtc)1210 int vmw_kms_sou_do_bo_dirty(struct vmw_private *dev_priv,
1211 				struct vmw_framebuffer *framebuffer,
1212 				struct drm_clip_rect *clips,
1213 				struct drm_vmw_rect *vclips,
1214 				unsigned num_clips, int increment,
1215 				bool interruptible,
1216 				struct vmw_fence_obj **out_fence,
1217 				struct drm_crtc *crtc)
1218 {
1219 	struct vmw_bo *buf =
1220 		container_of(framebuffer, struct vmw_framebuffer_bo,
1221 			     base)->buffer;
1222 	struct vmw_kms_dirty dirty;
1223 	DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
1224 	int ret;
1225 
1226 	vmw_bo_placement_set(buf, VMW_BO_DOMAIN_GMR | VMW_BO_DOMAIN_VRAM,
1227 			     VMW_BO_DOMAIN_GMR | VMW_BO_DOMAIN_VRAM);
1228 	ret = vmw_validation_add_bo(&val_ctx, buf);
1229 	if (ret)
1230 		return ret;
1231 
1232 	ret = vmw_validation_prepare(&val_ctx, NULL, interruptible);
1233 	if (ret)
1234 		goto out_unref;
1235 
1236 	ret = do_bo_define_gmrfb(dev_priv, framebuffer);
1237 	if (unlikely(ret != 0))
1238 		goto out_revert;
1239 
1240 	dirty.crtc = crtc;
1241 	dirty.fifo_commit = vmw_sou_bo_fifo_commit;
1242 	dirty.clip = vmw_sou_bo_clip;
1243 	dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_bo_blit) *
1244 		num_clips;
1245 	ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
1246 				   0, 0, num_clips, increment, &dirty);
1247 	vmw_kms_helper_validation_finish(dev_priv, NULL, &val_ctx, out_fence,
1248 					 NULL);
1249 
1250 	return ret;
1251 
1252 out_revert:
1253 	vmw_validation_revert(&val_ctx);
1254 out_unref:
1255 	vmw_validation_unref_lists(&val_ctx);
1256 
1257 	return ret;
1258 }
1259 
1260 
1261 /**
1262  * vmw_sou_readback_fifo_commit - Callback to submit a set of readback clips.
1263  *
1264  * @dirty: The closure structure.
1265  *
1266  * Commits a previously built command buffer of readback clips.
1267  */
vmw_sou_readback_fifo_commit(struct vmw_kms_dirty * dirty)1268 static void vmw_sou_readback_fifo_commit(struct vmw_kms_dirty *dirty)
1269 {
1270 	if (!dirty->num_hits) {
1271 		vmw_cmd_commit(dirty->dev_priv, 0);
1272 		return;
1273 	}
1274 
1275 	vmw_cmd_commit(dirty->dev_priv,
1276 			sizeof(struct vmw_kms_sou_readback_blit) *
1277 			dirty->num_hits);
1278 }
1279 
1280 /**
1281  * vmw_sou_readback_clip - Callback to encode a readback cliprect.
1282  *
1283  * @dirty: The closure structure
1284  *
1285  * Encodes a BLIT_SCREEN_TO_GMRFB cliprect.
1286  */
vmw_sou_readback_clip(struct vmw_kms_dirty * dirty)1287 static void vmw_sou_readback_clip(struct vmw_kms_dirty *dirty)
1288 {
1289 	struct vmw_kms_sou_readback_blit *blit = dirty->cmd;
1290 
1291 	blit += dirty->num_hits;
1292 	blit->header = SVGA_CMD_BLIT_SCREEN_TO_GMRFB;
1293 	blit->body.srcScreenId = dirty->unit->unit;
1294 	blit->body.destOrigin.x = dirty->fb_x;
1295 	blit->body.destOrigin.y = dirty->fb_y;
1296 	blit->body.srcRect.left = dirty->unit_x1;
1297 	blit->body.srcRect.top = dirty->unit_y1;
1298 	blit->body.srcRect.right = dirty->unit_x2;
1299 	blit->body.srcRect.bottom = dirty->unit_y2;
1300 	dirty->num_hits++;
1301 }
1302 
1303 /**
1304  * vmw_kms_sou_readback - Perform a readback from the screen object system to
1305  * a buffer-object backed framebuffer.
1306  *
1307  * @dev_priv: Pointer to the device private structure.
1308  * @file_priv: Pointer to a struct drm_file identifying the caller.
1309  * Must be set to NULL if @user_fence_rep is NULL.
1310  * @vfb: Pointer to the buffer-object backed framebuffer.
1311  * @user_fence_rep: User-space provided structure for fence information.
1312  * Must be set to non-NULL if @file_priv is non-NULL.
1313  * @vclips: Array of clip rects.
1314  * @num_clips: Number of clip rects in @vclips.
1315  * @crtc: If crtc is passed, readback on that crtc only.
1316  *
1317  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
1318  * interrupted.
1319  */
vmw_kms_sou_readback(struct vmw_private * dev_priv,struct drm_file * file_priv,struct vmw_framebuffer * vfb,struct drm_vmw_fence_rep __user * user_fence_rep,struct drm_vmw_rect * vclips,uint32_t num_clips,struct drm_crtc * crtc)1320 int vmw_kms_sou_readback(struct vmw_private *dev_priv,
1321 			 struct drm_file *file_priv,
1322 			 struct vmw_framebuffer *vfb,
1323 			 struct drm_vmw_fence_rep __user *user_fence_rep,
1324 			 struct drm_vmw_rect *vclips,
1325 			 uint32_t num_clips,
1326 			 struct drm_crtc *crtc)
1327 {
1328 	struct vmw_bo *buf =
1329 		container_of(vfb, struct vmw_framebuffer_bo, base)->buffer;
1330 	struct vmw_kms_dirty dirty;
1331 	DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
1332 	int ret;
1333 
1334 	vmw_bo_placement_set(buf, VMW_BO_DOMAIN_GMR | VMW_BO_DOMAIN_VRAM,
1335 			     VMW_BO_DOMAIN_GMR | VMW_BO_DOMAIN_VRAM);
1336 	ret = vmw_validation_add_bo(&val_ctx, buf);
1337 	if (ret)
1338 		return ret;
1339 
1340 	ret = vmw_validation_prepare(&val_ctx, NULL, true);
1341 	if (ret)
1342 		goto out_unref;
1343 
1344 	ret = do_bo_define_gmrfb(dev_priv, vfb);
1345 	if (unlikely(ret != 0))
1346 		goto out_revert;
1347 
1348 	dirty.crtc = crtc;
1349 	dirty.fifo_commit = vmw_sou_readback_fifo_commit;
1350 	dirty.clip = vmw_sou_readback_clip;
1351 	dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_readback_blit) *
1352 		num_clips;
1353 	ret = vmw_kms_helper_dirty(dev_priv, vfb, NULL, vclips,
1354 				   0, 0, num_clips, 1, &dirty);
1355 	vmw_kms_helper_validation_finish(dev_priv, file_priv, &val_ctx, NULL,
1356 					 user_fence_rep);
1357 
1358 	return ret;
1359 
1360 out_revert:
1361 	vmw_validation_revert(&val_ctx);
1362 out_unref:
1363 	vmw_validation_unref_lists(&val_ctx);
1364 
1365 	return ret;
1366 }
1367