1 /************************************************************************** 2 * 3 * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 24 * USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28 #include "vmwgfx_kms.h" 29 #include <drm/drm_plane_helper.h> 30 #include <drm/drm_atomic.h> 31 #include <drm/drm_atomic_helper.h> 32 33 34 #define vmw_crtc_to_ldu(x) \ 35 container_of(x, struct vmw_legacy_display_unit, base.crtc) 36 #define vmw_encoder_to_ldu(x) \ 37 container_of(x, struct vmw_legacy_display_unit, base.encoder) 38 #define vmw_connector_to_ldu(x) \ 39 container_of(x, struct vmw_legacy_display_unit, base.connector) 40 41 struct vmw_legacy_display { 42 struct list_head active; 43 44 unsigned num_active; 45 unsigned last_num_active; 46 47 struct vmw_framebuffer *fb; 48 }; 49 50 /** 51 * Display unit using the legacy register interface. 52 */ 53 struct vmw_legacy_display_unit { 54 struct vmw_display_unit base; 55 56 struct list_head active; 57 }; 58 59 static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu) 60 { 61 list_del_init(&ldu->active); 62 vmw_du_cleanup(&ldu->base); 63 kfree(ldu); 64 } 65 66 67 /* 68 * Legacy Display Unit CRTC functions 69 */ 70 71 static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc) 72 { 73 vmw_ldu_destroy(vmw_crtc_to_ldu(crtc)); 74 } 75 76 static int vmw_ldu_commit_list(struct vmw_private *dev_priv) 77 { 78 struct vmw_legacy_display *lds = dev_priv->ldu_priv; 79 struct vmw_legacy_display_unit *entry; 80 struct drm_framebuffer *fb = NULL; 81 struct drm_crtc *crtc = NULL; 82 int i = 0; 83 84 /* If there is no display topology the host just assumes 85 * that the guest will set the same layout as the host. 86 */ 87 if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) { 88 int w = 0, h = 0; 89 list_for_each_entry(entry, &lds->active, active) { 90 crtc = &entry->base.crtc; 91 w = max(w, crtc->x + crtc->mode.hdisplay); 92 h = max(h, crtc->y + crtc->mode.vdisplay); 93 i++; 94 } 95 96 if (crtc == NULL) 97 return 0; 98 fb = entry->base.crtc.primary->state->fb; 99 100 return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0], 101 fb->format->cpp[0] * 8, 102 fb->format->depth); 103 } 104 105 if (!list_empty(&lds->active)) { 106 entry = list_entry(lds->active.next, typeof(*entry), active); 107 fb = entry->base.crtc.primary->state->fb; 108 109 vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0], 110 fb->format->cpp[0] * 8, fb->format->depth); 111 } 112 113 /* Make sure we always show something. */ 114 vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 115 lds->num_active ? lds->num_active : 1); 116 117 i = 0; 118 list_for_each_entry(entry, &lds->active, active) { 119 crtc = &entry->base.crtc; 120 121 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i); 122 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i); 123 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x); 124 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y); 125 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay); 126 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay); 127 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID); 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 static int vmw_ldu_del_active(struct vmw_private *vmw_priv, 140 struct vmw_legacy_display_unit *ldu) 141 { 142 struct vmw_legacy_display *ld = vmw_priv->ldu_priv; 143 if (list_empty(&ldu->active)) 144 return 0; 145 146 /* Must init otherwise list_empty(&ldu->active) will not work. */ 147 list_del_init(&ldu->active); 148 if (--(ld->num_active) == 0) { 149 BUG_ON(!ld->fb); 150 if (ld->fb->unpin) 151 ld->fb->unpin(ld->fb); 152 ld->fb = NULL; 153 } 154 155 return 0; 156 } 157 158 static int vmw_ldu_add_active(struct vmw_private *vmw_priv, 159 struct vmw_legacy_display_unit *ldu, 160 struct vmw_framebuffer *vfb) 161 { 162 struct vmw_legacy_display *ld = vmw_priv->ldu_priv; 163 struct vmw_legacy_display_unit *entry; 164 struct list_head *at; 165 166 BUG_ON(!ld->num_active && ld->fb); 167 if (vfb != ld->fb) { 168 if (ld->fb && ld->fb->unpin) 169 ld->fb->unpin(ld->fb); 170 vmw_svga_enable(vmw_priv); 171 if (vfb->pin) 172 vfb->pin(vfb); 173 ld->fb = vfb; 174 } 175 176 if (!list_empty(&ldu->active)) 177 return 0; 178 179 at = &ld->active; 180 list_for_each_entry(entry, &ld->active, active) { 181 if (entry->base.unit > ldu->base.unit) 182 break; 183 184 at = &entry->active; 185 } 186 187 list_add(&ldu->active, at); 188 189 ld->num_active++; 190 191 return 0; 192 } 193 194 /** 195 * vmw_ldu_crtc_mode_set_nofb - Enable svga 196 * 197 * @crtc: CRTC associated with the new screen 198 * 199 * For LDU, just enable the svga 200 */ 201 static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc) 202 { 203 } 204 205 /** 206 * vmw_ldu_crtc_atomic_enable - Noop 207 * 208 * @crtc: CRTC associated with the new screen 209 * 210 * This is called after a mode set has been completed. Here's 211 * usually a good place to call vmw_ldu_add_active/vmw_ldu_del_active 212 * but since for LDU the display plane is closely tied to the 213 * CRTC, it makes more sense to do those at plane update time. 214 */ 215 static void vmw_ldu_crtc_atomic_enable(struct drm_crtc *crtc, 216 struct drm_crtc_state *old_state) 217 { 218 } 219 220 /** 221 * vmw_ldu_crtc_atomic_disable - Turns off CRTC 222 * 223 * @crtc: CRTC to be turned off 224 */ 225 static void vmw_ldu_crtc_atomic_disable(struct drm_crtc *crtc, 226 struct drm_crtc_state *old_state) 227 { 228 } 229 230 static const struct drm_crtc_funcs vmw_legacy_crtc_funcs = { 231 .gamma_set = vmw_du_crtc_gamma_set, 232 .destroy = vmw_ldu_crtc_destroy, 233 .reset = vmw_du_crtc_reset, 234 .atomic_duplicate_state = vmw_du_crtc_duplicate_state, 235 .atomic_destroy_state = vmw_du_crtc_destroy_state, 236 .set_config = vmw_kms_set_config, 237 }; 238 239 240 /* 241 * Legacy Display Unit encoder functions 242 */ 243 244 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder) 245 { 246 vmw_ldu_destroy(vmw_encoder_to_ldu(encoder)); 247 } 248 249 static const struct drm_encoder_funcs vmw_legacy_encoder_funcs = { 250 .destroy = vmw_ldu_encoder_destroy, 251 }; 252 253 /* 254 * Legacy Display Unit connector functions 255 */ 256 257 static void vmw_ldu_connector_destroy(struct drm_connector *connector) 258 { 259 vmw_ldu_destroy(vmw_connector_to_ldu(connector)); 260 } 261 262 static const struct drm_connector_funcs vmw_legacy_connector_funcs = { 263 .dpms = vmw_du_connector_dpms, 264 .detect = vmw_du_connector_detect, 265 .fill_modes = vmw_du_connector_fill_modes, 266 .set_property = vmw_du_connector_set_property, 267 .destroy = vmw_ldu_connector_destroy, 268 .reset = vmw_du_connector_reset, 269 .atomic_duplicate_state = vmw_du_connector_duplicate_state, 270 .atomic_destroy_state = vmw_du_connector_destroy_state, 271 .atomic_set_property = vmw_du_connector_atomic_set_property, 272 .atomic_get_property = vmw_du_connector_atomic_get_property, 273 }; 274 275 static const struct 276 drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = { 277 .best_encoder = drm_atomic_helper_best_encoder, 278 }; 279 280 /* 281 * Legacy Display Plane Functions 282 */ 283 284 /** 285 * vmw_ldu_primary_plane_cleanup_fb - Noop 286 * 287 * @plane: display plane 288 * @old_state: Contains the FB to clean up 289 * 290 * Unpins the display surface 291 * 292 * Returns 0 on success 293 */ 294 static void 295 vmw_ldu_primary_plane_cleanup_fb(struct drm_plane *plane, 296 struct drm_plane_state *old_state) 297 { 298 } 299 300 301 /** 302 * vmw_ldu_primary_plane_prepare_fb - Noop 303 * 304 * @plane: display plane 305 * @new_state: info on the new plane state, including the FB 306 * 307 * Returns 0 on success 308 */ 309 static int 310 vmw_ldu_primary_plane_prepare_fb(struct drm_plane *plane, 311 struct drm_plane_state *new_state) 312 { 313 return 0; 314 } 315 316 317 static void 318 vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane, 319 struct drm_plane_state *old_state) 320 { 321 struct vmw_private *dev_priv; 322 struct vmw_legacy_display_unit *ldu; 323 struct vmw_framebuffer *vfb; 324 struct drm_framebuffer *fb; 325 struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc; 326 327 328 ldu = vmw_crtc_to_ldu(crtc); 329 dev_priv = vmw_priv(plane->dev); 330 fb = plane->state->fb; 331 332 vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL; 333 334 if (vfb) 335 vmw_ldu_add_active(dev_priv, ldu, vfb); 336 else 337 vmw_ldu_del_active(dev_priv, ldu); 338 339 vmw_ldu_commit_list(dev_priv); 340 } 341 342 343 static const struct drm_plane_funcs vmw_ldu_plane_funcs = { 344 .update_plane = drm_atomic_helper_update_plane, 345 .disable_plane = drm_atomic_helper_disable_plane, 346 .destroy = vmw_du_primary_plane_destroy, 347 .reset = vmw_du_plane_reset, 348 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 349 .atomic_destroy_state = vmw_du_plane_destroy_state, 350 }; 351 352 static const struct drm_plane_funcs vmw_ldu_cursor_funcs = { 353 .update_plane = drm_atomic_helper_update_plane, 354 .disable_plane = drm_atomic_helper_disable_plane, 355 .destroy = vmw_du_cursor_plane_destroy, 356 .reset = vmw_du_plane_reset, 357 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 358 .atomic_destroy_state = vmw_du_plane_destroy_state, 359 }; 360 361 /* 362 * Atomic Helpers 363 */ 364 static const struct 365 drm_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = { 366 .atomic_check = vmw_du_cursor_plane_atomic_check, 367 .atomic_update = vmw_du_cursor_plane_atomic_update, 368 .prepare_fb = vmw_du_cursor_plane_prepare_fb, 369 .cleanup_fb = vmw_du_plane_cleanup_fb, 370 }; 371 372 static const struct 373 drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = { 374 .atomic_check = vmw_du_primary_plane_atomic_check, 375 .atomic_update = vmw_ldu_primary_plane_atomic_update, 376 .prepare_fb = vmw_ldu_primary_plane_prepare_fb, 377 .cleanup_fb = vmw_ldu_primary_plane_cleanup_fb, 378 }; 379 380 static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = { 381 .mode_set_nofb = vmw_ldu_crtc_mode_set_nofb, 382 .atomic_check = vmw_du_crtc_atomic_check, 383 .atomic_begin = vmw_du_crtc_atomic_begin, 384 .atomic_flush = vmw_du_crtc_atomic_flush, 385 .atomic_enable = vmw_ldu_crtc_atomic_enable, 386 .atomic_disable = vmw_ldu_crtc_atomic_disable, 387 }; 388 389 390 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit) 391 { 392 struct vmw_legacy_display_unit *ldu; 393 struct drm_device *dev = dev_priv->dev; 394 struct drm_connector *connector; 395 struct drm_encoder *encoder; 396 struct drm_plane *primary, *cursor; 397 struct drm_crtc *crtc; 398 int ret; 399 400 ldu = kzalloc(sizeof(*ldu), GFP_KERNEL); 401 if (!ldu) 402 return -ENOMEM; 403 404 ldu->base.unit = unit; 405 crtc = &ldu->base.crtc; 406 encoder = &ldu->base.encoder; 407 connector = &ldu->base.connector; 408 primary = &ldu->base.primary; 409 cursor = &ldu->base.cursor; 410 411 INIT_LIST_HEAD(&ldu->active); 412 413 ldu->base.pref_active = (unit == 0); 414 ldu->base.pref_width = dev_priv->initial_width; 415 ldu->base.pref_height = dev_priv->initial_height; 416 ldu->base.pref_mode = NULL; 417 418 /* 419 * Remove this after enabling atomic because property values can 420 * only exist in a state object 421 */ 422 ldu->base.is_implicit = true; 423 424 /* Initialize primary plane */ 425 vmw_du_plane_reset(primary); 426 427 ret = drm_universal_plane_init(dev, &ldu->base.primary, 428 0, &vmw_ldu_plane_funcs, 429 vmw_primary_plane_formats, 430 ARRAY_SIZE(vmw_primary_plane_formats), 431 NULL, DRM_PLANE_TYPE_PRIMARY, NULL); 432 if (ret) { 433 DRM_ERROR("Failed to initialize primary plane"); 434 goto err_free; 435 } 436 437 drm_plane_helper_add(primary, &vmw_ldu_primary_plane_helper_funcs); 438 439 /* Initialize cursor plane */ 440 vmw_du_plane_reset(cursor); 441 442 ret = drm_universal_plane_init(dev, &ldu->base.cursor, 443 0, &vmw_ldu_cursor_funcs, 444 vmw_cursor_plane_formats, 445 ARRAY_SIZE(vmw_cursor_plane_formats), 446 NULL, DRM_PLANE_TYPE_CURSOR, NULL); 447 if (ret) { 448 DRM_ERROR("Failed to initialize cursor plane"); 449 drm_plane_cleanup(&ldu->base.primary); 450 goto err_free; 451 } 452 453 drm_plane_helper_add(cursor, &vmw_ldu_cursor_plane_helper_funcs); 454 455 456 vmw_du_connector_reset(connector); 457 ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, 458 DRM_MODE_CONNECTOR_VIRTUAL); 459 if (ret) { 460 DRM_ERROR("Failed to initialize connector\n"); 461 goto err_free; 462 } 463 464 drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs); 465 connector->status = vmw_du_connector_detect(connector, true); 466 vmw_connector_state_to_vcs(connector->state)->is_implicit = true; 467 468 469 ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs, 470 DRM_MODE_ENCODER_VIRTUAL, NULL); 471 if (ret) { 472 DRM_ERROR("Failed to initialize encoder\n"); 473 goto err_free_connector; 474 } 475 476 (void) drm_mode_connector_attach_encoder(connector, encoder); 477 encoder->possible_crtcs = (1 << unit); 478 encoder->possible_clones = 0; 479 480 ret = drm_connector_register(connector); 481 if (ret) { 482 DRM_ERROR("Failed to register connector\n"); 483 goto err_free_encoder; 484 } 485 486 487 vmw_du_crtc_reset(crtc); 488 ret = drm_crtc_init_with_planes(dev, crtc, &ldu->base.primary, 489 &ldu->base.cursor, 490 &vmw_legacy_crtc_funcs, NULL); 491 if (ret) { 492 DRM_ERROR("Failed to initialize CRTC\n"); 493 goto err_free_unregister; 494 } 495 496 drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs); 497 498 drm_mode_crtc_set_gamma_size(crtc, 256); 499 500 drm_object_attach_property(&connector->base, 501 dev_priv->hotplug_mode_update_property, 1); 502 drm_object_attach_property(&connector->base, 503 dev->mode_config.suggested_x_property, 0); 504 drm_object_attach_property(&connector->base, 505 dev->mode_config.suggested_y_property, 0); 506 if (dev_priv->implicit_placement_property) 507 drm_object_attach_property 508 (&connector->base, 509 dev_priv->implicit_placement_property, 510 1); 511 512 return 0; 513 514 err_free_unregister: 515 drm_connector_unregister(connector); 516 err_free_encoder: 517 drm_encoder_cleanup(encoder); 518 err_free_connector: 519 drm_connector_cleanup(connector); 520 err_free: 521 kfree(ldu); 522 return ret; 523 } 524 525 int vmw_kms_ldu_init_display(struct vmw_private *dev_priv) 526 { 527 struct drm_device *dev = dev_priv->dev; 528 int i, ret; 529 530 if (dev_priv->ldu_priv) { 531 DRM_INFO("ldu system already on\n"); 532 return -EINVAL; 533 } 534 535 dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL); 536 if (!dev_priv->ldu_priv) 537 return -ENOMEM; 538 539 INIT_LIST_HEAD(&dev_priv->ldu_priv->active); 540 dev_priv->ldu_priv->num_active = 0; 541 dev_priv->ldu_priv->last_num_active = 0; 542 dev_priv->ldu_priv->fb = NULL; 543 544 /* for old hardware without multimon only enable one display */ 545 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 546 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); 547 else 548 ret = drm_vblank_init(dev, 1); 549 if (ret != 0) 550 goto err_free; 551 552 vmw_kms_create_implicit_placement_property(dev_priv, true); 553 554 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 555 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) 556 vmw_ldu_init(dev_priv, i); 557 else 558 vmw_ldu_init(dev_priv, 0); 559 560 dev_priv->active_display_unit = vmw_du_legacy; 561 562 DRM_INFO("Legacy Display Unit initialized\n"); 563 564 return 0; 565 566 err_free: 567 kfree(dev_priv->ldu_priv); 568 dev_priv->ldu_priv = NULL; 569 return ret; 570 } 571 572 int vmw_kms_ldu_close_display(struct vmw_private *dev_priv) 573 { 574 if (!dev_priv->ldu_priv) 575 return -ENOSYS; 576 577 BUG_ON(!list_empty(&dev_priv->ldu_priv->active)); 578 579 kfree(dev_priv->ldu_priv); 580 581 return 0; 582 } 583 584 585 int vmw_kms_ldu_do_dmabuf_dirty(struct vmw_private *dev_priv, 586 struct vmw_framebuffer *framebuffer, 587 unsigned flags, unsigned color, 588 struct drm_clip_rect *clips, 589 unsigned num_clips, int increment) 590 { 591 size_t fifo_size; 592 int i; 593 594 struct { 595 uint32_t header; 596 SVGAFifoCmdUpdate body; 597 } *cmd; 598 599 fifo_size = sizeof(*cmd) * num_clips; 600 cmd = vmw_fifo_reserve(dev_priv, fifo_size); 601 if (unlikely(cmd == NULL)) { 602 DRM_ERROR("Fifo reserve failed.\n"); 603 return -ENOMEM; 604 } 605 606 memset(cmd, 0, fifo_size); 607 for (i = 0; i < num_clips; i++, clips += increment) { 608 cmd[i].header = SVGA_CMD_UPDATE; 609 cmd[i].body.x = clips->x1; 610 cmd[i].body.y = clips->y1; 611 cmd[i].body.width = clips->x2 - clips->x1; 612 cmd[i].body.height = clips->y2 - clips->y1; 613 } 614 615 vmw_fifo_commit(dev_priv, fifo_size); 616 return 0; 617 } 618