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1// SPDX-License-Identifier: GPL-2.0 OR MIT
2/**************************************************************************
3 *
4 * Copyright (c) 2011-2024 Broadcom. All Rights Reserved. The term
5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
22 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
23 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
24 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
25 * USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 **************************************************************************/
28
29#include "vmwgfx_bo.h"
30#include "vmwgfx_kms.h"
31#include "vmwgfx_vkms.h"
32
33#include <drm/drm_atomic.h>
34#include <drm/drm_atomic_helper.h>
35#include <drm/drm_damage_helper.h>
36#include <drm/drm_fourcc.h>
37#include <drm/drm_vblank.h>
38
39#define vmw_crtc_to_sou(x) \
40 container_of(x, struct vmw_screen_object_unit, base.crtc)
41#define vmw_encoder_to_sou(x) \
42 container_of(x, struct vmw_screen_object_unit, base.encoder)
43#define vmw_connector_to_sou(x) \
44 container_of(x, struct vmw_screen_object_unit, base.connector)
45
46/**
47 * struct vmw_kms_sou_surface_dirty - Closure structure for
48 * blit surface to screen command.
49 * @base: The base type we derive from. Used by vmw_kms_helper_dirty().
50 * @left: Left side of bounding box.
51 * @right: Right side of bounding box.
52 * @top: Top side of bounding box.
53 * @bottom: Bottom side of bounding box.
54 * @dst_x: Difference between source clip rects and framebuffer coordinates.
55 * @dst_y: Difference between source clip rects and framebuffer coordinates.
56 * @sid: Surface id of surface to copy from.
57 */
58struct vmw_kms_sou_surface_dirty {
59 struct vmw_kms_dirty base;
60 s32 left, right, top, bottom;
61 s32 dst_x, dst_y;
62 u32 sid;
63};
64
65/*
66 * SVGA commands that are used by this code. Please see the device headers
67 * for explanation.
68 */
69struct vmw_kms_sou_readback_blit {
70 uint32 header;
71 SVGAFifoCmdBlitScreenToGMRFB body;
72};
73
74struct vmw_kms_sou_bo_blit {
75 uint32 header;
76 SVGAFifoCmdBlitGMRFBToScreen body;
77};
78
79struct vmw_kms_sou_dirty_cmd {
80 SVGA3dCmdHeader header;
81 SVGA3dCmdBlitSurfaceToScreen body;
82};
83
84struct vmw_kms_sou_define_gmrfb {
85 uint32_t header;
86 SVGAFifoCmdDefineGMRFB body;
87};
88
89/*
90 * Display unit using screen objects.
91 */
92struct vmw_screen_object_unit {
93 struct vmw_display_unit base;
94
95 struct vmw_bo *buffer; /**< Backing store buffer */
96
97 bool defined;
98};
99
100static void vmw_sou_destroy(struct vmw_screen_object_unit *sou)
101{
102 vmw_du_cleanup(&sou->base);
103 kfree(sou);
104}
105
106
107/*
108 * Screen Object Display Unit CRTC functions
109 */
110
111static void vmw_sou_crtc_destroy(struct drm_crtc *crtc)
112{
113 vmw_sou_destroy(vmw_crtc_to_sou(crtc));
114}
115
116/*
117 * Send the fifo command to create a screen.
118 */
119static int vmw_sou_fifo_create(struct vmw_private *dev_priv,
120 struct vmw_screen_object_unit *sou,
121 int x, int y,
122 struct drm_display_mode *mode)
123{
124 size_t fifo_size;
125
126 struct {
127 struct {
128 uint32_t cmdType;
129 } header;
130 SVGAScreenObject obj;
131 } *cmd;
132
133 BUG_ON(!sou->buffer);
134
135 fifo_size = sizeof(*cmd);
136 cmd = VMW_CMD_RESERVE(dev_priv, fifo_size);
137 if (unlikely(cmd == NULL))
138 return -ENOMEM;
139
140 memset(cmd, 0, fifo_size);
141 cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN;
142 cmd->obj.structSize = sizeof(SVGAScreenObject);
143 cmd->obj.id = sou->base.unit;
144 cmd->obj.flags = SVGA_SCREEN_HAS_ROOT |
145 (sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0);
146 cmd->obj.size.width = mode->hdisplay;
147 cmd->obj.size.height = mode->vdisplay;
148 cmd->obj.root.x = x;
149 cmd->obj.root.y = y;
150 sou->base.set_gui_x = cmd->obj.root.x;
151 sou->base.set_gui_y = cmd->obj.root.y;
152
153 /* Ok to assume that buffer is pinned in vram */
154 vmw_bo_get_guest_ptr(&sou->buffer->tbo, &cmd->obj.backingStore.ptr);
155 cmd->obj.backingStore.pitch = mode->hdisplay * 4;
156
157 vmw_cmd_commit(dev_priv, fifo_size);
158
159 sou->defined = true;
160
161 return 0;
162}
163
164/*
165 * Send the fifo command to destroy a screen.
166 */
167static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv,
168 struct vmw_screen_object_unit *sou)
169{
170 size_t fifo_size;
171 int ret;
172
173 struct {
174 struct {
175 uint32_t cmdType;
176 } header;
177 SVGAFifoCmdDestroyScreen body;
178 } *cmd;
179
180 /* no need to do anything */
181 if (unlikely(!sou->defined))
182 return 0;
183
184 fifo_size = sizeof(*cmd);
185 cmd = VMW_CMD_RESERVE(dev_priv, fifo_size);
186 if (unlikely(cmd == NULL))
187 return -ENOMEM;
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_cmd_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 * vmw_sou_crtc_mode_set_nofb - Create new screen
207 *
208 * @crtc: CRTC associated with the new screen
209 *
210 * This function creates/destroys a screen. This function cannot fail, so if
211 * somehow we run into a failure, just do the best we can to get out.
212 */
213static void vmw_sou_crtc_mode_set_nofb(struct drm_crtc *crtc)
214{
215 struct vmw_private *dev_priv;
216 struct vmw_screen_object_unit *sou;
217 struct vmw_framebuffer *vfb;
218 struct drm_framebuffer *fb;
219 struct drm_plane_state *ps;
220 struct vmw_plane_state *vps;
221 int ret;
222
223 sou = vmw_crtc_to_sou(crtc);
224 dev_priv = vmw_priv(crtc->dev);
225 ps = crtc->primary->state;
226 fb = ps->fb;
227 vps = vmw_plane_state_to_vps(ps);
228
229 vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
230
231 if (sou->defined) {
232 ret = vmw_sou_fifo_destroy(dev_priv, sou);
233 if (ret) {
234 DRM_ERROR("Failed to destroy Screen Object\n");
235 return;
236 }
237 }
238
239 if (vfb) {
240 struct drm_connector_state *conn_state;
241 struct vmw_connector_state *vmw_conn_state;
242 int x, y;
243
244 sou->buffer = vmw_user_object_buffer(&vps->uo);
245
246 conn_state = sou->base.connector.state;
247 vmw_conn_state = vmw_connector_state_to_vcs(conn_state);
248
249 x = vmw_conn_state->gui_x;
250 y = vmw_conn_state->gui_y;
251
252 ret = vmw_sou_fifo_create(dev_priv, sou, x, y, &crtc->mode);
253 if (ret)
254 DRM_ERROR("Failed to define Screen Object %dx%d\n",
255 crtc->x, crtc->y);
256
257 } else {
258 sou->buffer = NULL;
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 */
269static void vmw_sou_crtc_helper_prepare(struct drm_crtc *crtc)
270{
271}
272
273/**
274 * vmw_sou_crtc_atomic_disable - Turns off CRTC
275 *
276 * @crtc: CRTC to be turned off
277 * @state: Unused
278 */
279static void vmw_sou_crtc_atomic_disable(struct drm_crtc *crtc,
280 struct drm_atomic_state *state)
281{
282 struct vmw_private *dev_priv;
283 struct vmw_screen_object_unit *sou;
284 int ret;
285
286
287 if (!crtc) {
288 DRM_ERROR("CRTC is NULL\n");
289 return;
290 }
291
292 sou = vmw_crtc_to_sou(crtc);
293 dev_priv = vmw_priv(crtc->dev);
294
295 if (dev_priv->vkms_enabled)
296 drm_crtc_vblank_off(crtc);
297
298 if (sou->defined) {
299 ret = vmw_sou_fifo_destroy(dev_priv, sou);
300 if (ret)
301 DRM_ERROR("Failed to destroy Screen Object\n");
302 }
303}
304
305static const struct drm_crtc_funcs vmw_screen_object_crtc_funcs = {
306 .gamma_set = vmw_du_crtc_gamma_set,
307 .destroy = vmw_sou_crtc_destroy,
308 .reset = vmw_du_crtc_reset,
309 .atomic_duplicate_state = vmw_du_crtc_duplicate_state,
310 .atomic_destroy_state = vmw_du_crtc_destroy_state,
311 .set_config = drm_atomic_helper_set_config,
312 .page_flip = drm_atomic_helper_page_flip,
313 .enable_vblank = vmw_vkms_enable_vblank,
314 .disable_vblank = vmw_vkms_disable_vblank,
315 .get_vblank_timestamp = vmw_vkms_get_vblank_timestamp,
316};
317
318/*
319 * Screen Object Display Unit encoder functions
320 */
321
322static void vmw_sou_encoder_destroy(struct drm_encoder *encoder)
323{
324 vmw_sou_destroy(vmw_encoder_to_sou(encoder));
325}
326
327static const struct drm_encoder_funcs vmw_screen_object_encoder_funcs = {
328 .destroy = vmw_sou_encoder_destroy,
329};
330
331/*
332 * Screen Object Display Unit connector functions
333 */
334
335static void vmw_sou_connector_destroy(struct drm_connector *connector)
336{
337 vmw_sou_destroy(vmw_connector_to_sou(connector));
338}
339
340static const struct drm_connector_funcs vmw_sou_connector_funcs = {
341 .dpms = vmw_du_connector_dpms,
342 .detect = vmw_du_connector_detect,
343 .fill_modes = drm_helper_probe_single_connector_modes,
344 .destroy = vmw_sou_connector_destroy,
345 .reset = vmw_du_connector_reset,
346 .atomic_duplicate_state = vmw_du_connector_duplicate_state,
347 .atomic_destroy_state = vmw_du_connector_destroy_state,
348};
349
350
351static const struct
352drm_connector_helper_funcs vmw_sou_connector_helper_funcs = {
353 .get_modes = vmw_connector_get_modes,
354 .mode_valid = vmw_connector_mode_valid
355};
356
357
358
359/*
360 * Screen Object Display Plane Functions
361 */
362
363/**
364 * vmw_sou_primary_plane_cleanup_fb - Frees sou backing buffer
365 *
366 * @plane: display plane
367 * @old_state: Contains the FB to clean up
368 *
369 * Unpins the display surface
370 *
371 * Returns 0 on success
372 */
373static void
374vmw_sou_primary_plane_cleanup_fb(struct drm_plane *plane,
375 struct drm_plane_state *old_state)
376{
377 struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
378 struct drm_crtc *crtc = plane->state->crtc ?
379 plane->state->crtc : old_state->crtc;
380 struct vmw_bo *bo = vmw_user_object_buffer(&vps->uo);
381
382 if (bo)
383 vmw_bo_unpin(vmw_priv(crtc->dev), bo, false);
384 vmw_user_object_unref(&vps->uo);
385 vps->bo_size = 0;
386
387 vmw_du_plane_cleanup_fb(plane, old_state);
388}
389
390
391/**
392 * vmw_sou_primary_plane_prepare_fb - allocate backing buffer
393 *
394 * @plane: display plane
395 * @new_state: info on the new plane state, including the FB
396 *
397 * The SOU backing buffer is our equivalent of the display plane.
398 *
399 * Returns 0 on success
400 */
401static int
402vmw_sou_primary_plane_prepare_fb(struct drm_plane *plane,
403 struct drm_plane_state *new_state)
404{
405 struct drm_framebuffer *new_fb = new_state->fb;
406 struct drm_crtc *crtc = plane->state->crtc ?: new_state->crtc;
407 struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
408 struct vmw_private *dev_priv;
409 int ret;
410 struct vmw_bo_params bo_params = {
411 .domain = VMW_BO_DOMAIN_VRAM,
412 .busy_domain = VMW_BO_DOMAIN_VRAM,
413 .bo_type = ttm_bo_type_device,
414 .pin = true
415 };
416 struct vmw_bo *bo = NULL;
417
418 if (!new_fb) {
419 vmw_user_object_unref(&vps->uo);
420 vps->bo_size = 0;
421
422 return 0;
423 }
424
425 bo_params.size = new_state->crtc_w * new_state->crtc_h * 4;
426 dev_priv = vmw_priv(crtc->dev);
427
428 bo = vmw_user_object_buffer(&vps->uo);
429 if (bo) {
430 if (vps->bo_size == bo_params.size) {
431 /*
432 * Note that this might temporarily up the pin-count
433 * to 2, until cleanup_fb() is called.
434 */
435 return vmw_bo_pin_in_vram(dev_priv, bo, true);
436 }
437
438 vmw_user_object_unref(&vps->uo);
439 vps->bo_size = 0;
440 }
441
442 vmw_svga_enable(dev_priv);
443
444 /* After we have alloced the backing store might not be able to
445 * resume the overlays, this is preferred to failing to alloc.
446 */
447 vmw_overlay_pause_all(dev_priv);
448 ret = vmw_gem_object_create(dev_priv, &bo_params, &vps->uo.buffer);
449 vmw_overlay_resume_all(dev_priv);
450 if (ret)
451 return ret;
452
453 vps->bo_size = bo_params.size;
454
455 /*
456 * TTM already thinks the buffer is pinned, but make sure the
457 * pin_count is upped.
458 */
459 return vmw_bo_pin_in_vram(dev_priv, vps->uo.buffer, true);
460}
461
462static uint32_t vmw_sou_bo_fifo_size(struct vmw_du_update_plane *update,
463 uint32_t num_hits)
464{
465 return sizeof(struct vmw_kms_sou_define_gmrfb) +
466 sizeof(struct vmw_kms_sou_bo_blit) * num_hits;
467}
468
469static uint32_t vmw_sou_bo_define_gmrfb(struct vmw_du_update_plane *update,
470 void *cmd)
471{
472 struct vmw_framebuffer_bo *vfbbo =
473 container_of(update->vfb, typeof(*vfbbo), base);
474 struct vmw_kms_sou_define_gmrfb *gmr = cmd;
475 int depth = update->vfb->base.format->depth;
476
477 /* Emulate RGBA support, contrary to svga_reg.h this is not
478 * supported by hosts. This is only a problem if we are reading
479 * this value later and expecting what we uploaded back.
480 */
481 if (depth == 32)
482 depth = 24;
483
484 gmr->header = SVGA_CMD_DEFINE_GMRFB;
485
486 gmr->body.format.bitsPerPixel = update->vfb->base.format->cpp[0] * 8;
487 gmr->body.format.colorDepth = depth;
488 gmr->body.format.reserved = 0;
489 gmr->body.bytesPerLine = update->vfb->base.pitches[0];
490 vmw_bo_get_guest_ptr(&vfbbo->buffer->tbo, &gmr->body.ptr);
491
492 return sizeof(*gmr);
493}
494
495static uint32_t vmw_sou_bo_populate_clip(struct vmw_du_update_plane *update,
496 void *cmd, struct drm_rect *clip,
497 uint32_t fb_x, uint32_t fb_y)
498{
499 struct vmw_kms_sou_bo_blit *blit = cmd;
500
501 blit->header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN;
502 blit->body.destScreenId = update->du->unit;
503 blit->body.srcOrigin.x = fb_x;
504 blit->body.srcOrigin.y = fb_y;
505 blit->body.destRect.left = clip->x1;
506 blit->body.destRect.top = clip->y1;
507 blit->body.destRect.right = clip->x2;
508 blit->body.destRect.bottom = clip->y2;
509
510 return sizeof(*blit);
511}
512
513static uint32_t vmw_stud_bo_post_clip(struct vmw_du_update_plane *update,
514 void *cmd, struct drm_rect *bb)
515{
516 return 0;
517}
518
519/**
520 * vmw_sou_plane_update_bo - Update display unit for bo backed fb.
521 * @dev_priv: Device private.
522 * @plane: Plane state.
523 * @old_state: Old plane state.
524 * @vfb: Framebuffer which is blitted to display unit.
525 * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj.
526 * The returned fence pointer may be NULL in which case the device
527 * has already synchronized.
528 *
529 * Return: 0 on success or a negative error code on failure.
530 */
531static int vmw_sou_plane_update_bo(struct vmw_private *dev_priv,
532 struct drm_plane *plane,
533 struct drm_plane_state *old_state,
534 struct vmw_framebuffer *vfb,
535 struct vmw_fence_obj **out_fence)
536{
537 struct vmw_du_update_plane_buffer bo_update;
538
539 memset(&bo_update, 0, sizeof(struct vmw_du_update_plane_buffer));
540 bo_update.base.plane = plane;
541 bo_update.base.old_state = old_state;
542 bo_update.base.dev_priv = dev_priv;
543 bo_update.base.du = vmw_crtc_to_du(plane->state->crtc);
544 bo_update.base.vfb = vfb;
545 bo_update.base.out_fence = out_fence;
546 bo_update.base.mutex = NULL;
547 bo_update.base.intr = true;
548
549 bo_update.base.calc_fifo_size = vmw_sou_bo_fifo_size;
550 bo_update.base.post_prepare = vmw_sou_bo_define_gmrfb;
551 bo_update.base.clip = vmw_sou_bo_populate_clip;
552 bo_update.base.post_clip = vmw_stud_bo_post_clip;
553
554 return vmw_du_helper_plane_update(&bo_update.base);
555}
556
557static uint32_t vmw_sou_surface_fifo_size(struct vmw_du_update_plane *update,
558 uint32_t num_hits)
559{
560 return sizeof(struct vmw_kms_sou_dirty_cmd) + sizeof(SVGASignedRect) *
561 num_hits;
562}
563
564static uint32_t vmw_sou_surface_post_prepare(struct vmw_du_update_plane *update,
565 void *cmd)
566{
567 struct vmw_du_update_plane_surface *srf_update;
568
569 srf_update = container_of(update, typeof(*srf_update), base);
570
571 /*
572 * SOU SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN is special in the sense that
573 * its bounding box is filled before iterating over all the clips. So
574 * store the FIFO start address and revisit to fill the details.
575 */
576 srf_update->cmd_start = cmd;
577
578 return 0;
579}
580
581static uint32_t vmw_sou_surface_pre_clip(struct vmw_du_update_plane *update,
582 void *cmd, uint32_t num_hits)
583{
584 struct vmw_kms_sou_dirty_cmd *blit = cmd;
585 struct vmw_framebuffer_surface *vfbs;
586 struct vmw_surface *surf = NULL;
587
588 vfbs = container_of(update->vfb, typeof(*vfbs), base);
589
590 blit->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN;
591 blit->header.size = sizeof(blit->body) + sizeof(SVGASignedRect) *
592 num_hits;
593
594 surf = vmw_user_object_surface(&vfbs->uo);
595 blit->body.srcImage.sid = surf->res.id;
596 blit->body.destScreenId = update->du->unit;
597
598 /* Update the source and destination bounding box later in post_clip */
599 blit->body.srcRect.left = 0;
600 blit->body.srcRect.top = 0;
601 blit->body.srcRect.right = 0;
602 blit->body.srcRect.bottom = 0;
603
604 blit->body.destRect.left = 0;
605 blit->body.destRect.top = 0;
606 blit->body.destRect.right = 0;
607 blit->body.destRect.bottom = 0;
608
609 return sizeof(*blit);
610}
611
612static uint32_t vmw_sou_surface_clip_rect(struct vmw_du_update_plane *update,
613 void *cmd, struct drm_rect *clip,
614 uint32_t src_x, uint32_t src_y)
615{
616 SVGASignedRect *rect = cmd;
617
618 /*
619 * rects are relative to dest bounding box rect on screen object, so
620 * translate to it later in post_clip
621 */
622 rect->left = clip->x1;
623 rect->top = clip->y1;
624 rect->right = clip->x2;
625 rect->bottom = clip->y2;
626
627 return sizeof(*rect);
628}
629
630static uint32_t vmw_sou_surface_post_clip(struct vmw_du_update_plane *update,
631 void *cmd, struct drm_rect *bb)
632{
633 struct vmw_du_update_plane_surface *srf_update;
634 struct drm_plane_state *state = update->plane->state;
635 struct drm_rect src_bb;
636 struct vmw_kms_sou_dirty_cmd *blit;
637 SVGASignedRect *rect;
638 uint32_t num_hits;
639 int translate_src_x;
640 int translate_src_y;
641 int i;
642
643 srf_update = container_of(update, typeof(*srf_update), base);
644
645 blit = srf_update->cmd_start;
646 rect = (SVGASignedRect *)&blit[1];
647
648 num_hits = (blit->header.size - sizeof(blit->body))/
649 sizeof(SVGASignedRect);
650
651 src_bb = *bb;
652
653 /* To translate bb back to fb src coord */
654 translate_src_x = (state->src_x >> 16) - state->crtc_x;
655 translate_src_y = (state->src_y >> 16) - state->crtc_y;
656
657 drm_rect_translate(&src_bb, translate_src_x, translate_src_y);
658
659 blit->body.srcRect.left = src_bb.x1;
660 blit->body.srcRect.top = src_bb.y1;
661 blit->body.srcRect.right = src_bb.x2;
662 blit->body.srcRect.bottom = src_bb.y2;
663
664 blit->body.destRect.left = bb->x1;
665 blit->body.destRect.top = bb->y1;
666 blit->body.destRect.right = bb->x2;
667 blit->body.destRect.bottom = bb->y2;
668
669 /* rects are relative to dest bb rect */
670 for (i = 0; i < num_hits; i++) {
671 rect->left -= bb->x1;
672 rect->top -= bb->y1;
673 rect->right -= bb->x1;
674 rect->bottom -= bb->y1;
675 rect++;
676 }
677
678 return 0;
679}
680
681/**
682 * vmw_sou_plane_update_surface - Update display unit for surface backed fb.
683 * @dev_priv: Device private.
684 * @plane: Plane state.
685 * @old_state: Old plane state.
686 * @vfb: Framebuffer which is blitted to display unit
687 * @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj.
688 * The returned fence pointer may be NULL in which case the device
689 * has already synchronized.
690 *
691 * Return: 0 on success or a negative error code on failure.
692 */
693static int vmw_sou_plane_update_surface(struct vmw_private *dev_priv,
694 struct drm_plane *plane,
695 struct drm_plane_state *old_state,
696 struct vmw_framebuffer *vfb,
697 struct vmw_fence_obj **out_fence)
698{
699 struct vmw_du_update_plane_surface srf_update;
700
701 memset(&srf_update, 0, sizeof(struct vmw_du_update_plane_surface));
702 srf_update.base.plane = plane;
703 srf_update.base.old_state = old_state;
704 srf_update.base.dev_priv = dev_priv;
705 srf_update.base.du = vmw_crtc_to_du(plane->state->crtc);
706 srf_update.base.vfb = vfb;
707 srf_update.base.out_fence = out_fence;
708 srf_update.base.mutex = &dev_priv->cmdbuf_mutex;
709 srf_update.base.intr = true;
710
711 srf_update.base.calc_fifo_size = vmw_sou_surface_fifo_size;
712 srf_update.base.post_prepare = vmw_sou_surface_post_prepare;
713 srf_update.base.pre_clip = vmw_sou_surface_pre_clip;
714 srf_update.base.clip = vmw_sou_surface_clip_rect;
715 srf_update.base.post_clip = vmw_sou_surface_post_clip;
716
717 return vmw_du_helper_plane_update(&srf_update.base);
718}
719
720static void
721vmw_sou_primary_plane_atomic_update(struct drm_plane *plane,
722 struct drm_atomic_state *state)
723{
724 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, plane);
725 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane);
726 struct drm_crtc *crtc = new_state->crtc;
727 struct vmw_fence_obj *fence = NULL;
728 int ret;
729
730 /* In case of device error, maintain consistent atomic state */
731 if (crtc && new_state->fb) {
732 struct vmw_private *dev_priv = vmw_priv(crtc->dev);
733 struct vmw_framebuffer *vfb =
734 vmw_framebuffer_to_vfb(new_state->fb);
735
736 if (vfb->bo)
737 ret = vmw_sou_plane_update_bo(dev_priv, plane,
738 old_state, vfb, &fence);
739 else
740 ret = vmw_sou_plane_update_surface(dev_priv, plane,
741 old_state, vfb,
742 &fence);
743 if (ret != 0)
744 DRM_ERROR("Failed to update screen.\n");
745 } else {
746 /* Do nothing when fb and crtc is NULL (blank crtc) */
747 return;
748 }
749
750 if (fence)
751 vmw_fence_obj_unreference(&fence);
752}
753
754
755static const struct drm_plane_funcs vmw_sou_plane_funcs = {
756 .update_plane = drm_atomic_helper_update_plane,
757 .disable_plane = drm_atomic_helper_disable_plane,
758 .destroy = vmw_du_primary_plane_destroy,
759 .reset = vmw_du_plane_reset,
760 .atomic_duplicate_state = vmw_du_plane_duplicate_state,
761 .atomic_destroy_state = vmw_du_plane_destroy_state,
762};
763
764static const struct drm_plane_funcs vmw_sou_cursor_funcs = {
765 .update_plane = drm_atomic_helper_update_plane,
766 .disable_plane = drm_atomic_helper_disable_plane,
767 .destroy = vmw_du_cursor_plane_destroy,
768 .reset = vmw_du_plane_reset,
769 .atomic_duplicate_state = vmw_du_plane_duplicate_state,
770 .atomic_destroy_state = vmw_du_plane_destroy_state,
771};
772
773/*
774 * Atomic Helpers
775 */
776static const struct
777drm_plane_helper_funcs vmw_sou_cursor_plane_helper_funcs = {
778 .atomic_check = vmw_du_cursor_plane_atomic_check,
779 .atomic_update = vmw_du_cursor_plane_atomic_update,
780 .prepare_fb = vmw_du_cursor_plane_prepare_fb,
781 .cleanup_fb = vmw_du_cursor_plane_cleanup_fb,
782};
783
784static const struct
785drm_plane_helper_funcs vmw_sou_primary_plane_helper_funcs = {
786 .atomic_check = vmw_du_primary_plane_atomic_check,
787 .atomic_update = vmw_sou_primary_plane_atomic_update,
788 .prepare_fb = vmw_sou_primary_plane_prepare_fb,
789 .cleanup_fb = vmw_sou_primary_plane_cleanup_fb,
790};
791
792static const struct drm_crtc_helper_funcs vmw_sou_crtc_helper_funcs = {
793 .prepare = vmw_sou_crtc_helper_prepare,
794 .mode_set_nofb = vmw_sou_crtc_mode_set_nofb,
795 .atomic_check = vmw_du_crtc_atomic_check,
796 .atomic_begin = vmw_du_crtc_atomic_begin,
797 .atomic_flush = vmw_vkms_crtc_atomic_flush,
798 .atomic_enable = vmw_vkms_crtc_atomic_enable,
799 .atomic_disable = vmw_sou_crtc_atomic_disable,
800};
801
802
803static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit)
804{
805 struct vmw_screen_object_unit *sou;
806 struct drm_device *dev = &dev_priv->drm;
807 struct drm_connector *connector;
808 struct drm_encoder *encoder;
809 struct drm_plane *primary;
810 struct vmw_cursor_plane *cursor;
811 struct drm_crtc *crtc;
812 int ret;
813
814 sou = kzalloc(sizeof(*sou), GFP_KERNEL);
815 if (!sou)
816 return -ENOMEM;
817
818 sou->base.unit = unit;
819 crtc = &sou->base.crtc;
820 encoder = &sou->base.encoder;
821 connector = &sou->base.connector;
822 primary = &sou->base.primary;
823 cursor = &sou->base.cursor;
824
825 sou->base.pref_active = (unit == 0);
826 sou->base.pref_width = dev_priv->initial_width;
827 sou->base.pref_height = dev_priv->initial_height;
828
829 /*
830 * Remove this after enabling atomic because property values can
831 * only exist in a state object
832 */
833 sou->base.is_implicit = false;
834
835 /* Initialize primary plane */
836 ret = drm_universal_plane_init(dev, primary,
837 0, &vmw_sou_plane_funcs,
838 vmw_primary_plane_formats,
839 ARRAY_SIZE(vmw_primary_plane_formats),
840 NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
841 if (ret) {
842 DRM_ERROR("Failed to initialize primary plane");
843 goto err_free;
844 }
845
846 drm_plane_helper_add(primary, &vmw_sou_primary_plane_helper_funcs);
847 drm_plane_enable_fb_damage_clips(primary);
848
849 /* Initialize cursor plane */
850 ret = drm_universal_plane_init(dev, &cursor->base,
851 0, &vmw_sou_cursor_funcs,
852 vmw_cursor_plane_formats,
853 ARRAY_SIZE(vmw_cursor_plane_formats),
854 NULL, DRM_PLANE_TYPE_CURSOR, NULL);
855 if (ret) {
856 DRM_ERROR("Failed to initialize cursor plane");
857 drm_plane_cleanup(&sou->base.primary);
858 goto err_free;
859 }
860
861 drm_plane_helper_add(&cursor->base, &vmw_sou_cursor_plane_helper_funcs);
862
863 ret = drm_connector_init(dev, connector, &vmw_sou_connector_funcs,
864 DRM_MODE_CONNECTOR_VIRTUAL);
865 if (ret) {
866 DRM_ERROR("Failed to initialize connector\n");
867 goto err_free;
868 }
869
870 drm_connector_helper_add(connector, &vmw_sou_connector_helper_funcs);
871 connector->status = vmw_du_connector_detect(connector, true);
872
873 ret = drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs,
874 DRM_MODE_ENCODER_VIRTUAL, NULL);
875 if (ret) {
876 DRM_ERROR("Failed to initialize encoder\n");
877 goto err_free_connector;
878 }
879
880 (void) drm_connector_attach_encoder(connector, encoder);
881 encoder->possible_crtcs = (1 << unit);
882 encoder->possible_clones = 0;
883
884 ret = drm_connector_register(connector);
885 if (ret) {
886 DRM_ERROR("Failed to register connector\n");
887 goto err_free_encoder;
888 }
889
890 ret = drm_crtc_init_with_planes(dev, crtc, primary,
891 &cursor->base,
892 &vmw_screen_object_crtc_funcs, NULL);
893 if (ret) {
894 DRM_ERROR("Failed to initialize CRTC\n");
895 goto err_free_unregister;
896 }
897
898 drm_crtc_helper_add(crtc, &vmw_sou_crtc_helper_funcs);
899
900 drm_mode_crtc_set_gamma_size(crtc, 256);
901
902 drm_object_attach_property(&connector->base,
903 dev_priv->hotplug_mode_update_property, 1);
904 drm_object_attach_property(&connector->base,
905 dev->mode_config.suggested_x_property, 0);
906 drm_object_attach_property(&connector->base,
907 dev->mode_config.suggested_y_property, 0);
908
909 vmw_du_init(&sou->base);
910
911 return 0;
912
913err_free_unregister:
914 drm_connector_unregister(connector);
915err_free_encoder:
916 drm_encoder_cleanup(encoder);
917err_free_connector:
918 drm_connector_cleanup(connector);
919err_free:
920 kfree(sou);
921 return ret;
922}
923
924int 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
947static 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 */
991static 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 */
1049static 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 */
1094int 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 = &vmw_user_object_surface(&vfbs->uo)->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
1144out_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 */
1156static 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 */
1175static 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 */
1210int 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
1252out_revert:
1253 vmw_validation_revert(&val_ctx);
1254out_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 */
1268static 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 */
1287static 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 */
1320int 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
1360out_revert:
1361 vmw_validation_revert(&val_ctx);
1362out_unref:
1363 vmw_validation_unref_lists(&val_ctx);
1364
1365 return ret;
1366}