drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c

   1 // SPDX-License-Identifier: GPL-2.0 OR MIT
   2 /**************************************************************************
   3  *
   4  * Copyright 2009-2023 VMware, Inc., Palo Alto, CA., USA
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "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_fourcc.h>
  34
  35
  36 #define vmw_crtc_to_ldu(x) \
  37         container_of(x, struct vmw_legacy_display_unit, base.crtc)
  38 #define vmw_encoder_to_ldu(x) \
  39         container_of(x, struct vmw_legacy_display_unit, base.encoder)
  40 #define vmw_connector_to_ldu(x) \
  41         container_of(x, struct vmw_legacy_display_unit, base.connector)
  42
  43 struct vmw_legacy_display {
  44         struct list_head active;
  45
  46         unsigned num_active;
  47         unsigned last_num_active;
  48
  49         struct vmw_framebuffer *fb;
  50 };
  51
  52 /*
  53  * Display unit using the legacy register interface.
  54  */
  55 struct vmw_legacy_display_unit {
  56         struct vmw_display_unit base;
  57
  58         struct list_head active;
  59 };
  60
  61 static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
  62 {
  63         list_del_init(&ldu->active);
  64         vmw_du_cleanup(&ldu->base);
  65         kfree(ldu);
  66 }
  67
  68
  69 /*
  70  * Legacy Display Unit CRTC functions
  71  */
  72
  73 static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
  74 {
  75         vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
  76 }
  77
  78 static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
  79 {
  80         struct vmw_legacy_display *lds = dev_priv->ldu_priv;
  81         struct vmw_legacy_display_unit *entry;
  82         struct drm_framebuffer *fb = NULL;
  83         struct drm_crtc *crtc = NULL;
  84         int i;
  85
  86         /* If there is no display topology the host just assumes
  87          * that the guest will set the same layout as the host.
  88          */
  89         if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
  90                 int w = 0, h = 0;
  91                 list_for_each_entry(entry, &lds->active, active) {
  92                         crtc = &entry->base.crtc;
  93                         w = max(w, crtc->x + crtc->mode.hdisplay);
  94                         h = max(h, crtc->y + crtc->mode.vdisplay);
  95                 }
  96
  97                 if (crtc == NULL)
  98                         return 0;
  99                 fb = crtc->primary->state->fb;
 100
 101                 return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0],
 102                                           fb->format->cpp[0] * 8,
 103                                           fb->format->depth);
 104         }
 105
 106         if (!list_empty(&lds->active)) {
 107                 entry = list_entry(lds->active.next, typeof(*entry), active);
 108                 fb = entry->base.crtc.primary->state->fb;
 109
 110                 vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0],
 111                                    fb->format->cpp[0] * 8, fb->format->depth);
 112         }
 113
 114         /* Make sure we always show something. */
 115         vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS,
 116                   lds->num_active ? lds->num_active : 1);
 117
 118         i = 0;
 119         list_for_each_entry(entry, &lds->active, active) {
 120                 crtc = &entry->base.crtc;
 121
 122                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
 123                 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
 124                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
 125                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
 126                 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
 127                 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
 128
 129                 i++;
 130         }
 131
 132         BUG_ON(i != lds->num_active);
 133
 134         lds->last_num_active = lds->num_active;
 135
 136         return 0;
 137 }
 138
 139 /*
 140  * Pin the buffer in a location suitable for access by the
 141  * display system.
 142  */
 143 static int vmw_ldu_fb_pin(struct vmw_framebuffer *vfb)
 144 {
 145         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
 146         struct vmw_bo *buf;
 147         int ret;
 148
 149         buf = vfb->bo ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
 150                 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.guest_memory_bo;
 151
 152         if (!buf)
 153                 return 0;
 154         WARN_ON(dev_priv->active_display_unit != vmw_du_legacy);
 155
 156         if (dev_priv->active_display_unit == vmw_du_legacy) {
 157                 vmw_overlay_pause_all(dev_priv);
 158                 ret = vmw_bo_pin_in_start_of_vram(dev_priv, buf, false);
 159                 vmw_overlay_resume_all(dev_priv);
 160         } else
 161                 ret = -EINVAL;
 162
 163         return ret;
 164 }
 165
 166 static int vmw_ldu_fb_unpin(struct vmw_framebuffer *vfb)
 167 {
 168         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
 169         struct vmw_bo *buf;
 170
 171         buf = vfb->bo ?  vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
 172                 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.guest_memory_bo;
 173
 174         if (WARN_ON(!buf))
 175                 return 0;
 176
 177         return vmw_bo_unpin(dev_priv, buf, false);
 178 }
 179
 180 static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
 181                               struct vmw_legacy_display_unit *ldu)
 182 {
 183         struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
 184         if (list_empty(&ldu->active))
 185                 return 0;
 186
 187         /* Must init otherwise list_empty(&ldu->active) will not work. */
 188         list_del_init(&ldu->active);
 189         if (--(ld->num_active) == 0) {
 190                 BUG_ON(!ld->fb);
 191                 WARN_ON(vmw_ldu_fb_unpin(ld->fb));
 192                 ld->fb = NULL;
 193         }
 194
 195         return 0;
 196 }
 197
 198 static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
 199                               struct vmw_legacy_display_unit *ldu,
 200                               struct vmw_framebuffer *vfb)
 201 {
 202         struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
 203         struct vmw_legacy_display_unit *entry;
 204         struct list_head *at;
 205
 206         BUG_ON(!ld->num_active && ld->fb);
 207         if (vfb != ld->fb) {
 208                 if (ld->fb)
 209                         WARN_ON(vmw_ldu_fb_unpin(ld->fb));
 210                 vmw_svga_enable(vmw_priv);
 211                 WARN_ON(vmw_ldu_fb_pin(vfb));
 212                 ld->fb = vfb;
 213         }
 214
 215         if (!list_empty(&ldu->active))
 216                 return 0;
 217
 218         at = &ld->active;
 219         list_for_each_entry(entry, &ld->active, active) {
 220                 if (entry->base.unit > ldu->base.unit)
 221                         break;
 222
 223                 at = &entry->active;
 224         }
 225
 226         list_add(&ldu->active, at);
 227
 228         ld->num_active++;
 229
 230         return 0;
 231 }
 232
 233 /**
 234  * vmw_ldu_crtc_mode_set_nofb - Enable svga
 235  *
 236  * @crtc: CRTC associated with the new screen
 237  *
 238  * For LDU, just enable the svga
 239  */
 240 static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc)
 241 {
 242 }
 243
 244 /**
 245  * vmw_ldu_crtc_atomic_enable - Noop
 246  *
 247  * @crtc: CRTC associated with the new screen
 248  * @state: Unused
 249  *
 250  * This is called after a mode set has been completed.  Here's
 251  * usually a good place to call vmw_ldu_add_active/vmw_ldu_del_active
 252  * but since for LDU the display plane is closely tied to the
 253  * CRTC, it makes more sense to do those at plane update time.
 254  */
 255 static void vmw_ldu_crtc_atomic_enable(struct drm_crtc *crtc,
 256                                        struct drm_atomic_state *state)
 257 {
 258 }
 259
 260 /**
 261  * vmw_ldu_crtc_atomic_disable - Turns off CRTC
 262  *
 263  * @crtc: CRTC to be turned off
 264  * @state: Unused
 265  */
 266 static void vmw_ldu_crtc_atomic_disable(struct drm_crtc *crtc,
 267                                         struct drm_atomic_state *state)
 268 {
 269 }
 270
 271 static const struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
 272         .gamma_set = vmw_du_crtc_gamma_set,
 273         .destroy = vmw_ldu_crtc_destroy,
 274         .reset = vmw_du_crtc_reset,
 275         .atomic_duplicate_state = vmw_du_crtc_duplicate_state,
 276         .atomic_destroy_state = vmw_du_crtc_destroy_state,
 277         .set_config = drm_atomic_helper_set_config,
 278         .page_flip = drm_atomic_helper_page_flip,
 279 };
 280
 281
 282 /*
 283  * Legacy Display Unit encoder functions
 284  */
 285
 286 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
 287 {
 288         vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
 289 }
 290
 291 static const struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
 292         .destroy = vmw_ldu_encoder_destroy,
 293 };
 294
 295 /*
 296  * Legacy Display Unit connector functions
 297  */
 298
 299 static void vmw_ldu_connector_destroy(struct drm_connector *connector)
 300 {
 301         vmw_ldu_destroy(vmw_connector_to_ldu(connector));
 302 }
 303
 304 static const struct drm_connector_funcs vmw_legacy_connector_funcs = {
 305         .dpms = vmw_du_connector_dpms,
 306         .detect = vmw_du_connector_detect,
 307         .fill_modes = vmw_du_connector_fill_modes,
 308         .destroy = vmw_ldu_connector_destroy,
 309         .reset = vmw_du_connector_reset,
 310         .atomic_duplicate_state = vmw_du_connector_duplicate_state,
 311         .atomic_destroy_state = vmw_du_connector_destroy_state,
 312 };
 313
 314 static const struct
 315 drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = {
 316 };
 317
 318 static int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv,
 319                                    struct vmw_framebuffer *framebuffer,
 320                                    unsigned int flags, unsigned int color,
 321                                    struct drm_mode_rect *clips,
 322                                    unsigned int num_clips);
 323
 324 /*
 325  * Legacy Display Plane Functions
 326  */
 327
 328 static void
 329 vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane,
 330                                     struct drm_atomic_state *state)
 331 {
 332         struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
 333                                                                            plane);
 334         struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
 335                                                                            plane);
 336         struct vmw_private *dev_priv;
 337         struct vmw_legacy_display_unit *ldu;
 338         struct vmw_framebuffer *vfb;
 339         struct drm_framebuffer *fb;
 340         struct drm_crtc *crtc = new_state->crtc ?: old_state->crtc;
 341
 342         ldu = vmw_crtc_to_ldu(crtc);
 343         dev_priv = vmw_priv(plane->dev);
 344         fb       = new_state->fb;
 345
 346         vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
 347
 348         if (vfb)
 349                 vmw_ldu_add_active(dev_priv, ldu, vfb);
 350         else
 351                 vmw_ldu_del_active(dev_priv, ldu);
 352
 353         vmw_ldu_commit_list(dev_priv);
 354
 355         if (vfb && vmw_cmd_supported(dev_priv)) {
 356                 struct drm_mode_rect fb_rect = {
 357                         .x1 = 0,
 358                         .y1 = 0,
 359                         .x2 = vfb->base.width,
 360                         .y2 = vfb->base.height
 361                 };
 362                 struct drm_mode_rect *damage_rects = drm_plane_get_damage_clips(new_state);
 363                 u32 rect_count = drm_plane_get_damage_clips_count(new_state);
 364                 int ret;
 365
 366                 if (!damage_rects) {
 367                         damage_rects = &fb_rect;
 368                         rect_count = 1;
 369                 }
 370
 371                 ret = vmw_kms_ldu_do_bo_dirty(dev_priv, vfb, 0, 0, damage_rects, rect_count);
 372
 373                 drm_WARN_ONCE(plane->dev, ret,
 374                         "vmw_kms_ldu_do_bo_dirty failed with: ret=%d\n", ret);
 375
 376                 vmw_cmd_flush(dev_priv, false);
 377         }
 378 }
 379
 380 static const struct drm_plane_funcs vmw_ldu_plane_funcs = {
 381         .update_plane = drm_atomic_helper_update_plane,
 382         .disable_plane = drm_atomic_helper_disable_plane,
 383         .destroy = vmw_du_primary_plane_destroy,
 384         .reset = vmw_du_plane_reset,
 385         .atomic_duplicate_state = vmw_du_plane_duplicate_state,
 386         .atomic_destroy_state = vmw_du_plane_destroy_state,
 387 };
 388
 389 static const struct drm_plane_funcs vmw_ldu_cursor_funcs = {
 390         .update_plane = drm_atomic_helper_update_plane,
 391         .disable_plane = drm_atomic_helper_disable_plane,
 392         .destroy = vmw_du_cursor_plane_destroy,
 393         .reset = vmw_du_plane_reset,
 394         .atomic_duplicate_state = vmw_du_plane_duplicate_state,
 395         .atomic_destroy_state = vmw_du_plane_destroy_state,
 396 };
 397
 398 /*
 399  * Atomic Helpers
 400  */
 401 static const struct
 402 drm_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = {
 403         .atomic_check = vmw_du_cursor_plane_atomic_check,
 404         .atomic_update = vmw_du_cursor_plane_atomic_update,
 405         .prepare_fb = vmw_du_cursor_plane_prepare_fb,
 406         .cleanup_fb = vmw_du_cursor_plane_cleanup_fb,
 407 };
 408
 409 static const struct
 410 drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = {
 411         .atomic_check = vmw_du_primary_plane_atomic_check,
 412         .atomic_update = vmw_ldu_primary_plane_atomic_update,
 413 };
 414
 415 static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = {
 416         .mode_set_nofb = vmw_ldu_crtc_mode_set_nofb,
 417         .atomic_check = vmw_du_crtc_atomic_check,
 418         .atomic_begin = vmw_du_crtc_atomic_begin,
 419         .atomic_flush = vmw_du_crtc_atomic_flush,
 420         .atomic_enable = vmw_ldu_crtc_atomic_enable,
 421         .atomic_disable = vmw_ldu_crtc_atomic_disable,
 422 };
 423
 424
 425 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
 426 {
 427         struct vmw_legacy_display_unit *ldu;
 428         struct drm_device *dev = &dev_priv->drm;
 429         struct drm_connector *connector;
 430         struct drm_encoder *encoder;
 431         struct drm_plane *primary;
 432         struct vmw_cursor_plane *cursor;
 433         struct drm_crtc *crtc;
 434         int ret;
 435
 436         ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
 437         if (!ldu)
 438                 return -ENOMEM;
 439
 440         ldu->base.unit = unit;
 441         crtc = &ldu->base.crtc;
 442         encoder = &ldu->base.encoder;
 443         connector = &ldu->base.connector;
 444         primary = &ldu->base.primary;
 445         cursor = &ldu->base.cursor;
 446
 447         INIT_LIST_HEAD(&ldu->active);
 448
 449         ldu->base.pref_active = (unit == 0);
 450         ldu->base.pref_width = dev_priv->initial_width;
 451         ldu->base.pref_height = dev_priv->initial_height;
 452         ldu->base.pref_mode = NULL;
 453
 454         /*
 455          * Remove this after enabling atomic because property values can
 456          * only exist in a state object
 457          */
 458         ldu->base.is_implicit = true;
 459
 460         /* Initialize primary plane */
 461         ret = drm_universal_plane_init(dev, primary,
 462                                        0, &vmw_ldu_plane_funcs,
 463                                        vmw_primary_plane_formats,
 464                                        ARRAY_SIZE(vmw_primary_plane_formats),
 465                                        NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
 466         if (ret) {
 467                 DRM_ERROR("Failed to initialize primary plane");
 468                 goto err_free;
 469         }
 470
 471         drm_plane_helper_add(primary, &vmw_ldu_primary_plane_helper_funcs);
 472
 473         /*
 474          * We're going to be using traces and software cursors
 475          */
 476         if (vmw_cmd_supported(dev_priv)) {
 477                 /* Initialize cursor plane */
 478                 ret = drm_universal_plane_init(dev, &cursor->base,
 479                                                0, &vmw_ldu_cursor_funcs,
 480                                                vmw_cursor_plane_formats,
 481                                                ARRAY_SIZE(vmw_cursor_plane_formats),
 482                                                NULL, DRM_PLANE_TYPE_CURSOR, NULL);
 483                 if (ret) {
 484                         DRM_ERROR("Failed to initialize cursor plane");
 485                         drm_plane_cleanup(&ldu->base.primary);
 486                         goto err_free;
 487                 }
 488
 489                 drm_plane_helper_add(&cursor->base, &vmw_ldu_cursor_plane_helper_funcs);
 490         }
 491
 492         ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
 493                                  DRM_MODE_CONNECTOR_VIRTUAL);
 494         if (ret) {
 495                 DRM_ERROR("Failed to initialize connector\n");
 496                 goto err_free;
 497         }
 498
 499         drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs);
 500         connector->status = vmw_du_connector_detect(connector, true);
 501
 502         ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
 503                                DRM_MODE_ENCODER_VIRTUAL, NULL);
 504         if (ret) {
 505                 DRM_ERROR("Failed to initialize encoder\n");
 506                 goto err_free_connector;
 507         }
 508
 509         (void) drm_connector_attach_encoder(connector, encoder);
 510         encoder->possible_crtcs = (1 << unit);
 511         encoder->possible_clones = 0;
 512
 513         ret = drm_connector_register(connector);
 514         if (ret) {
 515                 DRM_ERROR("Failed to register connector\n");
 516                 goto err_free_encoder;
 517         }
 518
 519         ret = drm_crtc_init_with_planes(dev, crtc, primary,
 520                       vmw_cmd_supported(dev_priv) ? &cursor->base : NULL,
 521                       &vmw_legacy_crtc_funcs, NULL);
 522         if (ret) {
 523                 DRM_ERROR("Failed to initialize CRTC\n");
 524                 goto err_free_unregister;
 525         }
 526
 527         drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs);
 528
 529         drm_mode_crtc_set_gamma_size(crtc, 256);
 530
 531         drm_object_attach_property(&connector->base,
 532                                    dev_priv->hotplug_mode_update_property, 1);
 533         drm_object_attach_property(&connector->base,
 534                                    dev->mode_config.suggested_x_property, 0);
 535         drm_object_attach_property(&connector->base,
 536                                    dev->mode_config.suggested_y_property, 0);
 537         if (dev_priv->implicit_placement_property)
 538                 drm_object_attach_property
 539                         (&connector->base,
 540                          dev_priv->implicit_placement_property,
 541                          1);
 542
 543         return 0;
 544
 545 err_free_unregister:
 546         drm_connector_unregister(connector);
 547 err_free_encoder:
 548         drm_encoder_cleanup(encoder);
 549 err_free_connector:
 550         drm_connector_cleanup(connector);
 551 err_free:
 552         kfree(ldu);
 553         return ret;
 554 }
 555
 556 int vmw_kms_ldu_init_display(struct vmw_private *dev_priv)
 557 {
 558         struct drm_device *dev = &dev_priv->drm;
 559         int i, ret;
 560         int num_display_units = (dev_priv->capabilities & SVGA_CAP_MULTIMON) ?
 561                                         VMWGFX_NUM_DISPLAY_UNITS : 1;
 562
 563         if (unlikely(dev_priv->ldu_priv)) {
 564                 return -EINVAL;
 565         }
 566
 567         dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL);
 568         if (!dev_priv->ldu_priv)
 569                 return -ENOMEM;
 570
 571         INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
 572         dev_priv->ldu_priv->num_active = 0;
 573         dev_priv->ldu_priv->last_num_active = 0;
 574         dev_priv->ldu_priv->fb = NULL;
 575
 576         vmw_kms_create_implicit_placement_property(dev_priv);
 577
 578         for (i = 0; i < num_display_units; ++i) {
 579                 ret = vmw_ldu_init(dev_priv, i);
 580                 if (ret != 0)
 581                         goto err_free;
 582         }
 583
 584         dev_priv->active_display_unit = vmw_du_legacy;
 585
 586         drm_mode_config_reset(dev);
 587
 588         return 0;
 589
 590 err_free:
 591         kfree(dev_priv->ldu_priv);
 592         dev_priv->ldu_priv = NULL;
 593         return ret;
 594 }
 595
 596 int vmw_kms_ldu_close_display(struct vmw_private *dev_priv)
 597 {
 598         if (!dev_priv->ldu_priv)
 599                 return -ENOSYS;
 600
 601         BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
 602
 603         kfree(dev_priv->ldu_priv);
 604
 605         return 0;
 606 }
 607
 608
 609 static int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv,
 610                                    struct vmw_framebuffer *framebuffer,
 611                                    unsigned int flags, unsigned int color,
 612                                    struct drm_mode_rect *clips,
 613                                    unsigned int num_clips)
 614 {
 615         size_t fifo_size;
 616         int i;
 617
 618         struct {
 619                 uint32_t header;
 620                 SVGAFifoCmdUpdate body;
 621         } *cmd;
 622
 623         fifo_size = sizeof(*cmd) * num_clips;
 624         cmd = VMW_CMD_RESERVE(dev_priv, fifo_size);
 625         if (unlikely(cmd == NULL))
 626                 return -ENOMEM;
 627
 628         memset(cmd, 0, fifo_size);
 629         for (i = 0; i < num_clips; i++, clips++) {
 630                 cmd[i].header = SVGA_CMD_UPDATE;
 631                 cmd[i].body.x = clips->x1;
 632                 cmd[i].body.y = clips->y1;
 633                 cmd[i].body.width = clips->x2 - clips->x1;
 634                 cmd[i].body.height = clips->y2 - clips->y1;
 635         }
 636
 637         vmw_cmd_commit(dev_priv, fifo_size);
 638         return 0;
 639 }