1 // SPDX-License-Identifier: GPL-2.0 OR MIT 2 /************************************************************************** 3 * 4 * Copyright 2009-2022 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 <drm/drm_atomic.h> 29 #include <drm/drm_atomic_helper.h> 30 #include <drm/drm_fourcc.h> 31 #include <drm/drm_vblank.h> 32 33 #include "vmwgfx_kms.h" 34 35 #define vmw_crtc_to_ldu(x) \ 36 container_of(x, struct vmw_legacy_display_unit, base.crtc) 37 #define vmw_encoder_to_ldu(x) \ 38 container_of(x, struct vmw_legacy_display_unit, base.encoder) 39 #define vmw_connector_to_ldu(x) \ 40 container_of(x, struct vmw_legacy_display_unit, base.connector) 41 42 struct vmw_legacy_display { 43 struct list_head active; 44 45 unsigned num_active; 46 unsigned last_num_active; 47 48 struct vmw_framebuffer *fb; 49 }; 50 51 /* 52 * Display unit using the legacy register interface. 53 */ 54 struct vmw_legacy_display_unit { 55 struct vmw_display_unit base; 56 57 struct list_head active; 58 }; 59 60 static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu) 61 { 62 list_del_init(&ldu->active); 63 vmw_du_cleanup(&ldu->base); 64 kfree(ldu); 65 } 66 67 68 /* 69 * Legacy Display Unit CRTC functions 70 */ 71 72 static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc) 73 { 74 vmw_ldu_destroy(vmw_crtc_to_ldu(crtc)); 75 } 76 77 static int vmw_ldu_commit_list(struct vmw_private *dev_priv) 78 { 79 struct vmw_legacy_display *lds = dev_priv->ldu_priv; 80 struct vmw_legacy_display_unit *entry; 81 struct drm_framebuffer *fb = NULL; 82 struct drm_crtc *crtc = NULL; 83 int i; 84 85 /* If there is no display topology the host just assumes 86 * that the guest will set the same layout as the host. 87 */ 88 if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) { 89 int w = 0, h = 0; 90 list_for_each_entry(entry, &lds->active, active) { 91 crtc = &entry->base.crtc; 92 w = max(w, crtc->x + crtc->mode.hdisplay); 93 h = max(h, crtc->y + crtc->mode.vdisplay); 94 } 95 96 if (crtc == NULL) 97 return 0; 98 fb = 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); 127 128 i++; 129 } 130 131 BUG_ON(i != lds->num_active); 132 133 lds->last_num_active = lds->num_active; 134 135 return 0; 136 } 137 138 static int vmw_ldu_del_active(struct vmw_private *vmw_priv, 139 struct vmw_legacy_display_unit *ldu) 140 { 141 struct vmw_legacy_display *ld = vmw_priv->ldu_priv; 142 if (list_empty(&ldu->active)) 143 return 0; 144 145 /* Must init otherwise list_empty(&ldu->active) will not work. */ 146 list_del_init(&ldu->active); 147 if (--(ld->num_active) == 0) { 148 BUG_ON(!ld->fb); 149 if (ld->fb->unpin) 150 ld->fb->unpin(ld->fb); 151 ld->fb = NULL; 152 } 153 154 return 0; 155 } 156 157 static int vmw_ldu_add_active(struct vmw_private *vmw_priv, 158 struct vmw_legacy_display_unit *ldu, 159 struct vmw_framebuffer *vfb) 160 { 161 struct vmw_legacy_display *ld = vmw_priv->ldu_priv; 162 struct vmw_legacy_display_unit *entry; 163 struct list_head *at; 164 165 BUG_ON(!ld->num_active && ld->fb); 166 if (vfb != ld->fb) { 167 if (ld->fb && ld->fb->unpin) 168 ld->fb->unpin(ld->fb); 169 vmw_svga_enable(vmw_priv); 170 if (vfb->pin) 171 vfb->pin(vfb); 172 ld->fb = vfb; 173 } 174 175 if (!list_empty(&ldu->active)) 176 return 0; 177 178 at = &ld->active; 179 list_for_each_entry(entry, &ld->active, active) { 180 if (entry->base.unit > ldu->base.unit) 181 break; 182 183 at = &entry->active; 184 } 185 186 list_add(&ldu->active, at); 187 188 ld->num_active++; 189 190 return 0; 191 } 192 193 /** 194 * vmw_ldu_crtc_mode_set_nofb - Enable svga 195 * 196 * @crtc: CRTC associated with the new screen 197 * 198 * For LDU, just enable the svga 199 */ 200 static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc) 201 { 202 } 203 204 /** 205 * vmw_ldu_crtc_atomic_enable - Noop 206 * 207 * @crtc: CRTC associated with the new screen 208 * @state: Unused 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_atomic_state *state) 217 { 218 } 219 220 /** 221 * vmw_ldu_crtc_atomic_disable - Turns off CRTC 222 * 223 * @crtc: CRTC to be turned off 224 * @state: Unused 225 */ 226 static void vmw_ldu_crtc_atomic_disable(struct drm_crtc *crtc, 227 struct drm_atomic_state *state) 228 { 229 } 230 231 static const struct drm_crtc_funcs vmw_legacy_crtc_funcs = { 232 .gamma_set = vmw_du_crtc_gamma_set, 233 .destroy = vmw_ldu_crtc_destroy, 234 .reset = vmw_du_crtc_reset, 235 .atomic_duplicate_state = vmw_du_crtc_duplicate_state, 236 .atomic_destroy_state = vmw_du_crtc_destroy_state, 237 .set_config = drm_atomic_helper_set_config, 238 .get_vblank_counter = vmw_get_vblank_counter, 239 .enable_vblank = vmw_enable_vblank, 240 .disable_vblank = vmw_disable_vblank, 241 }; 242 243 244 /* 245 * Legacy Display Unit encoder functions 246 */ 247 248 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder) 249 { 250 vmw_ldu_destroy(vmw_encoder_to_ldu(encoder)); 251 } 252 253 static const struct drm_encoder_funcs vmw_legacy_encoder_funcs = { 254 .destroy = vmw_ldu_encoder_destroy, 255 }; 256 257 /* 258 * Legacy Display Unit connector functions 259 */ 260 261 static void vmw_ldu_connector_destroy(struct drm_connector *connector) 262 { 263 vmw_ldu_destroy(vmw_connector_to_ldu(connector)); 264 } 265 266 static const struct drm_connector_funcs vmw_legacy_connector_funcs = { 267 .dpms = vmw_du_connector_dpms, 268 .detect = vmw_du_connector_detect, 269 .fill_modes = vmw_du_connector_fill_modes, 270 .destroy = vmw_ldu_connector_destroy, 271 .reset = vmw_du_connector_reset, 272 .atomic_duplicate_state = vmw_du_connector_duplicate_state, 273 .atomic_destroy_state = vmw_du_connector_destroy_state, 274 }; 275 276 static const struct 277 drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = { 278 }; 279 280 /* 281 * Legacy Display Plane Functions 282 */ 283 284 static void 285 vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane, 286 struct drm_atomic_state *state) 287 { 288 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, 289 plane); 290 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, 291 plane); 292 struct vmw_private *dev_priv; 293 struct vmw_legacy_display_unit *ldu; 294 struct vmw_framebuffer *vfb; 295 struct drm_framebuffer *fb; 296 struct drm_crtc *crtc = new_state->crtc ?: old_state->crtc; 297 298 299 ldu = vmw_crtc_to_ldu(crtc); 300 dev_priv = vmw_priv(plane->dev); 301 fb = new_state->fb; 302 303 vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL; 304 305 if (vfb) 306 vmw_ldu_add_active(dev_priv, ldu, vfb); 307 else 308 vmw_ldu_del_active(dev_priv, ldu); 309 310 vmw_ldu_commit_list(dev_priv); 311 } 312 313 314 static const struct drm_plane_funcs vmw_ldu_plane_funcs = { 315 .update_plane = drm_atomic_helper_update_plane, 316 .disable_plane = drm_atomic_helper_disable_plane, 317 .destroy = vmw_du_primary_plane_destroy, 318 .reset = vmw_du_plane_reset, 319 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 320 .atomic_destroy_state = vmw_du_plane_destroy_state, 321 }; 322 323 static const struct drm_plane_funcs vmw_ldu_cursor_funcs = { 324 .update_plane = drm_atomic_helper_update_plane, 325 .disable_plane = drm_atomic_helper_disable_plane, 326 .destroy = vmw_du_cursor_plane_destroy, 327 .reset = vmw_du_plane_reset, 328 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 329 .atomic_destroy_state = vmw_du_plane_destroy_state, 330 }; 331 332 /* 333 * Atomic Helpers 334 */ 335 static const struct 336 drm_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = { 337 .atomic_check = vmw_du_cursor_plane_atomic_check, 338 .atomic_update = vmw_du_cursor_plane_atomic_update, 339 .prepare_fb = vmw_du_cursor_plane_prepare_fb, 340 .cleanup_fb = vmw_du_cursor_plane_cleanup_fb, 341 }; 342 343 static const struct 344 drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = { 345 .atomic_check = vmw_du_primary_plane_atomic_check, 346 .atomic_update = vmw_ldu_primary_plane_atomic_update, 347 }; 348 349 static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = { 350 .mode_set_nofb = vmw_ldu_crtc_mode_set_nofb, 351 .atomic_check = vmw_du_crtc_atomic_check, 352 .atomic_begin = vmw_du_crtc_atomic_begin, 353 .atomic_flush = vmw_du_crtc_atomic_flush, 354 .atomic_enable = vmw_ldu_crtc_atomic_enable, 355 .atomic_disable = vmw_ldu_crtc_atomic_disable, 356 }; 357 358 359 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit) 360 { 361 struct vmw_legacy_display_unit *ldu; 362 struct drm_device *dev = &dev_priv->drm; 363 struct drm_connector *connector; 364 struct drm_encoder *encoder; 365 struct drm_plane *primary; 366 struct vmw_cursor_plane *cursor; 367 struct drm_crtc *crtc; 368 int ret; 369 370 ldu = kzalloc(sizeof(*ldu), GFP_KERNEL); 371 if (!ldu) 372 return -ENOMEM; 373 374 ldu->base.unit = unit; 375 crtc = &ldu->base.crtc; 376 encoder = &ldu->base.encoder; 377 connector = &ldu->base.connector; 378 primary = &ldu->base.primary; 379 cursor = &ldu->base.cursor; 380 381 INIT_LIST_HEAD(&ldu->active); 382 383 ldu->base.pref_active = (unit == 0); 384 ldu->base.pref_width = dev_priv->initial_width; 385 ldu->base.pref_height = dev_priv->initial_height; 386 ldu->base.pref_mode = NULL; 387 388 /* 389 * Remove this after enabling atomic because property values can 390 * only exist in a state object 391 */ 392 ldu->base.is_implicit = true; 393 394 /* Initialize primary plane */ 395 ret = drm_universal_plane_init(dev, primary, 396 0, &vmw_ldu_plane_funcs, 397 vmw_primary_plane_formats, 398 ARRAY_SIZE(vmw_primary_plane_formats), 399 NULL, DRM_PLANE_TYPE_PRIMARY, NULL); 400 if (ret) { 401 DRM_ERROR("Failed to initialize primary plane"); 402 goto err_free; 403 } 404 405 drm_plane_helper_add(primary, &vmw_ldu_primary_plane_helper_funcs); 406 407 /* 408 * We're going to be using traces and software cursors 409 */ 410 if (vmw_cmd_supported(dev_priv)) { 411 /* Initialize cursor plane */ 412 ret = drm_universal_plane_init(dev, &cursor->base, 413 0, &vmw_ldu_cursor_funcs, 414 vmw_cursor_plane_formats, 415 ARRAY_SIZE(vmw_cursor_plane_formats), 416 NULL, DRM_PLANE_TYPE_CURSOR, NULL); 417 if (ret) { 418 DRM_ERROR("Failed to initialize cursor plane"); 419 drm_plane_cleanup(&ldu->base.primary); 420 goto err_free; 421 } 422 423 drm_plane_helper_add(&cursor->base, &vmw_ldu_cursor_plane_helper_funcs); 424 } 425 426 ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, 427 DRM_MODE_CONNECTOR_VIRTUAL); 428 if (ret) { 429 DRM_ERROR("Failed to initialize connector\n"); 430 goto err_free; 431 } 432 433 drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs); 434 connector->status = vmw_du_connector_detect(connector, true); 435 436 ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs, 437 DRM_MODE_ENCODER_VIRTUAL, NULL); 438 if (ret) { 439 DRM_ERROR("Failed to initialize encoder\n"); 440 goto err_free_connector; 441 } 442 443 (void) drm_connector_attach_encoder(connector, encoder); 444 encoder->possible_crtcs = (1 << unit); 445 encoder->possible_clones = 0; 446 447 ret = drm_connector_register(connector); 448 if (ret) { 449 DRM_ERROR("Failed to register connector\n"); 450 goto err_free_encoder; 451 } 452 453 ret = drm_crtc_init_with_planes(dev, crtc, primary, 454 vmw_cmd_supported(dev_priv) ? &cursor->base : NULL, 455 &vmw_legacy_crtc_funcs, NULL); 456 if (ret) { 457 DRM_ERROR("Failed to initialize CRTC\n"); 458 goto err_free_unregister; 459 } 460 461 drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs); 462 463 drm_mode_crtc_set_gamma_size(crtc, 256); 464 465 drm_object_attach_property(&connector->base, 466 dev_priv->hotplug_mode_update_property, 1); 467 drm_object_attach_property(&connector->base, 468 dev->mode_config.suggested_x_property, 0); 469 drm_object_attach_property(&connector->base, 470 dev->mode_config.suggested_y_property, 0); 471 if (dev_priv->implicit_placement_property) 472 drm_object_attach_property 473 (&connector->base, 474 dev_priv->implicit_placement_property, 475 1); 476 477 return 0; 478 479 err_free_unregister: 480 drm_connector_unregister(connector); 481 err_free_encoder: 482 drm_encoder_cleanup(encoder); 483 err_free_connector: 484 drm_connector_cleanup(connector); 485 err_free: 486 kfree(ldu); 487 return ret; 488 } 489 490 int vmw_kms_ldu_init_display(struct vmw_private *dev_priv) 491 { 492 struct drm_device *dev = &dev_priv->drm; 493 int i, ret; 494 int num_display_units = (dev_priv->capabilities & SVGA_CAP_MULTIMON) ? 495 VMWGFX_NUM_DISPLAY_UNITS : 1; 496 497 if (unlikely(dev_priv->ldu_priv)) { 498 return -EINVAL; 499 } 500 501 dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL); 502 if (!dev_priv->ldu_priv) 503 return -ENOMEM; 504 505 INIT_LIST_HEAD(&dev_priv->ldu_priv->active); 506 dev_priv->ldu_priv->num_active = 0; 507 dev_priv->ldu_priv->last_num_active = 0; 508 dev_priv->ldu_priv->fb = NULL; 509 510 ret = drm_vblank_init(dev, num_display_units); 511 if (ret != 0) 512 goto err_free; 513 514 vmw_kms_create_implicit_placement_property(dev_priv); 515 516 for (i = 0; i < num_display_units; ++i) { 517 ret = vmw_ldu_init(dev_priv, i); 518 if (ret != 0) 519 goto err_free; 520 } 521 522 dev_priv->active_display_unit = vmw_du_legacy; 523 524 drm_mode_config_reset(dev); 525 526 return 0; 527 528 err_free: 529 kfree(dev_priv->ldu_priv); 530 dev_priv->ldu_priv = NULL; 531 return ret; 532 } 533 534 int vmw_kms_ldu_close_display(struct vmw_private *dev_priv) 535 { 536 if (!dev_priv->ldu_priv) 537 return -ENOSYS; 538 539 BUG_ON(!list_empty(&dev_priv->ldu_priv->active)); 540 541 kfree(dev_priv->ldu_priv); 542 543 return 0; 544 } 545 546 547 int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv, 548 struct vmw_framebuffer *framebuffer, 549 unsigned int flags, unsigned int color, 550 struct drm_clip_rect *clips, 551 unsigned int num_clips, int increment) 552 { 553 size_t fifo_size; 554 int i; 555 556 struct { 557 uint32_t header; 558 SVGAFifoCmdUpdate body; 559 } *cmd; 560 561 fifo_size = sizeof(*cmd) * num_clips; 562 cmd = VMW_CMD_RESERVE(dev_priv, fifo_size); 563 if (unlikely(cmd == NULL)) 564 return -ENOMEM; 565 566 memset(cmd, 0, fifo_size); 567 for (i = 0; i < num_clips; i++, clips += increment) { 568 cmd[i].header = SVGA_CMD_UPDATE; 569 cmd[i].body.x = clips->x1; 570 cmd[i].body.y = clips->y1; 571 cmd[i].body.width = clips->x2 - clips->x1; 572 cmd[i].body.height = clips->y2 - clips->y1; 573 } 574 575 vmw_cmd_commit(dev_priv, fifo_size); 576 return 0; 577 } 578