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 32 #include "vmwgfx_kms.h" 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; 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 } 94 95 if (crtc == NULL) 96 return 0; 97 fb = crtc->primary->state->fb; 98 99 return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0], 100 fb->format->cpp[0] * 8, 101 fb->format->depth); 102 } 103 104 if (!list_empty(&lds->active)) { 105 entry = list_entry(lds->active.next, typeof(*entry), active); 106 fb = entry->base.crtc.primary->state->fb; 107 108 vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0], 109 fb->format->cpp[0] * 8, fb->format->depth); 110 } 111 112 /* Make sure we always show something. */ 113 vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 114 lds->num_active ? lds->num_active : 1); 115 116 i = 0; 117 list_for_each_entry(entry, &lds->active, active) { 118 crtc = &entry->base.crtc; 119 120 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i); 121 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i); 122 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x); 123 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y); 124 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay); 125 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay); 126 127 i++; 128 } 129 130 BUG_ON(i != lds->num_active); 131 132 lds->last_num_active = lds->num_active; 133 134 return 0; 135 } 136 137 static int vmw_ldu_del_active(struct vmw_private *vmw_priv, 138 struct vmw_legacy_display_unit *ldu) 139 { 140 struct vmw_legacy_display *ld = vmw_priv->ldu_priv; 141 if (list_empty(&ldu->active)) 142 return 0; 143 144 /* Must init otherwise list_empty(&ldu->active) will not work. */ 145 list_del_init(&ldu->active); 146 if (--(ld->num_active) == 0) { 147 BUG_ON(!ld->fb); 148 if (ld->fb->unpin) 149 ld->fb->unpin(ld->fb); 150 ld->fb = NULL; 151 } 152 153 return 0; 154 } 155 156 static int vmw_ldu_add_active(struct vmw_private *vmw_priv, 157 struct vmw_legacy_display_unit *ldu, 158 struct vmw_framebuffer *vfb) 159 { 160 struct vmw_legacy_display *ld = vmw_priv->ldu_priv; 161 struct vmw_legacy_display_unit *entry; 162 struct list_head *at; 163 164 BUG_ON(!ld->num_active && ld->fb); 165 if (vfb != ld->fb) { 166 if (ld->fb && ld->fb->unpin) 167 ld->fb->unpin(ld->fb); 168 vmw_svga_enable(vmw_priv); 169 if (vfb->pin) 170 vfb->pin(vfb); 171 ld->fb = vfb; 172 } 173 174 if (!list_empty(&ldu->active)) 175 return 0; 176 177 at = &ld->active; 178 list_for_each_entry(entry, &ld->active, active) { 179 if (entry->base.unit > ldu->base.unit) 180 break; 181 182 at = &entry->active; 183 } 184 185 list_add(&ldu->active, at); 186 187 ld->num_active++; 188 189 return 0; 190 } 191 192 /** 193 * vmw_ldu_crtc_mode_set_nofb - Enable svga 194 * 195 * @crtc: CRTC associated with the new screen 196 * 197 * For LDU, just enable the svga 198 */ 199 static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc) 200 { 201 } 202 203 /** 204 * vmw_ldu_crtc_atomic_enable - Noop 205 * 206 * @crtc: CRTC associated with the new screen 207 * @state: Unused 208 * 209 * This is called after a mode set has been completed. Here's 210 * usually a good place to call vmw_ldu_add_active/vmw_ldu_del_active 211 * but since for LDU the display plane is closely tied to the 212 * CRTC, it makes more sense to do those at plane update time. 213 */ 214 static void vmw_ldu_crtc_atomic_enable(struct drm_crtc *crtc, 215 struct drm_atomic_state *state) 216 { 217 } 218 219 /** 220 * vmw_ldu_crtc_atomic_disable - Turns off CRTC 221 * 222 * @crtc: CRTC to be turned off 223 * @state: Unused 224 */ 225 static void vmw_ldu_crtc_atomic_disable(struct drm_crtc *crtc, 226 struct drm_atomic_state *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 = drm_atomic_helper_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 .destroy = vmw_ldu_connector_destroy, 267 .reset = vmw_du_connector_reset, 268 .atomic_duplicate_state = vmw_du_connector_duplicate_state, 269 .atomic_destroy_state = vmw_du_connector_destroy_state, 270 }; 271 272 static const struct 273 drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = { 274 }; 275 276 /* 277 * Legacy Display Plane Functions 278 */ 279 280 static void 281 vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane, 282 struct drm_atomic_state *state) 283 { 284 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, 285 plane); 286 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, 287 plane); 288 struct vmw_private *dev_priv; 289 struct vmw_legacy_display_unit *ldu; 290 struct vmw_framebuffer *vfb; 291 struct drm_framebuffer *fb; 292 struct drm_crtc *crtc = new_state->crtc ?: old_state->crtc; 293 294 295 ldu = vmw_crtc_to_ldu(crtc); 296 dev_priv = vmw_priv(plane->dev); 297 fb = new_state->fb; 298 299 vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL; 300 301 if (vfb) 302 vmw_ldu_add_active(dev_priv, ldu, vfb); 303 else 304 vmw_ldu_del_active(dev_priv, ldu); 305 306 vmw_ldu_commit_list(dev_priv); 307 } 308 309 310 static const struct drm_plane_funcs vmw_ldu_plane_funcs = { 311 .update_plane = drm_atomic_helper_update_plane, 312 .disable_plane = drm_atomic_helper_disable_plane, 313 .destroy = vmw_du_primary_plane_destroy, 314 .reset = vmw_du_plane_reset, 315 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 316 .atomic_destroy_state = vmw_du_plane_destroy_state, 317 }; 318 319 static const struct drm_plane_funcs vmw_ldu_cursor_funcs = { 320 .update_plane = drm_atomic_helper_update_plane, 321 .disable_plane = drm_atomic_helper_disable_plane, 322 .destroy = vmw_du_cursor_plane_destroy, 323 .reset = vmw_du_plane_reset, 324 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 325 .atomic_destroy_state = vmw_du_plane_destroy_state, 326 }; 327 328 /* 329 * Atomic Helpers 330 */ 331 static const struct 332 drm_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = { 333 .atomic_check = vmw_du_cursor_plane_atomic_check, 334 .atomic_update = vmw_du_cursor_plane_atomic_update, 335 .prepare_fb = vmw_du_cursor_plane_prepare_fb, 336 .cleanup_fb = vmw_du_cursor_plane_cleanup_fb, 337 }; 338 339 static const struct 340 drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = { 341 .atomic_check = vmw_du_primary_plane_atomic_check, 342 .atomic_update = vmw_ldu_primary_plane_atomic_update, 343 }; 344 345 static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = { 346 .mode_set_nofb = vmw_ldu_crtc_mode_set_nofb, 347 .atomic_check = vmw_du_crtc_atomic_check, 348 .atomic_begin = vmw_du_crtc_atomic_begin, 349 .atomic_flush = vmw_du_crtc_atomic_flush, 350 .atomic_enable = vmw_ldu_crtc_atomic_enable, 351 .atomic_disable = vmw_ldu_crtc_atomic_disable, 352 }; 353 354 355 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit) 356 { 357 struct vmw_legacy_display_unit *ldu; 358 struct drm_device *dev = &dev_priv->drm; 359 struct drm_connector *connector; 360 struct drm_encoder *encoder; 361 struct drm_plane *primary; 362 struct vmw_cursor_plane *cursor; 363 struct drm_crtc *crtc; 364 int ret; 365 366 ldu = kzalloc(sizeof(*ldu), GFP_KERNEL); 367 if (!ldu) 368 return -ENOMEM; 369 370 ldu->base.unit = unit; 371 crtc = &ldu->base.crtc; 372 encoder = &ldu->base.encoder; 373 connector = &ldu->base.connector; 374 primary = &ldu->base.primary; 375 cursor = &ldu->base.cursor; 376 377 INIT_LIST_HEAD(&ldu->active); 378 379 ldu->base.pref_active = (unit == 0); 380 ldu->base.pref_width = dev_priv->initial_width; 381 ldu->base.pref_height = dev_priv->initial_height; 382 ldu->base.pref_mode = NULL; 383 384 /* 385 * Remove this after enabling atomic because property values can 386 * only exist in a state object 387 */ 388 ldu->base.is_implicit = true; 389 390 /* Initialize primary plane */ 391 ret = drm_universal_plane_init(dev, primary, 392 0, &vmw_ldu_plane_funcs, 393 vmw_primary_plane_formats, 394 ARRAY_SIZE(vmw_primary_plane_formats), 395 NULL, DRM_PLANE_TYPE_PRIMARY, NULL); 396 if (ret) { 397 DRM_ERROR("Failed to initialize primary plane"); 398 goto err_free; 399 } 400 401 drm_plane_helper_add(primary, &vmw_ldu_primary_plane_helper_funcs); 402 403 /* 404 * We're going to be using traces and software cursors 405 */ 406 if (vmw_cmd_supported(dev_priv)) { 407 /* Initialize cursor plane */ 408 ret = drm_universal_plane_init(dev, &cursor->base, 409 0, &vmw_ldu_cursor_funcs, 410 vmw_cursor_plane_formats, 411 ARRAY_SIZE(vmw_cursor_plane_formats), 412 NULL, DRM_PLANE_TYPE_CURSOR, NULL); 413 if (ret) { 414 DRM_ERROR("Failed to initialize cursor plane"); 415 drm_plane_cleanup(&ldu->base.primary); 416 goto err_free; 417 } 418 419 drm_plane_helper_add(&cursor->base, &vmw_ldu_cursor_plane_helper_funcs); 420 } 421 422 ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, 423 DRM_MODE_CONNECTOR_VIRTUAL); 424 if (ret) { 425 DRM_ERROR("Failed to initialize connector\n"); 426 goto err_free; 427 } 428 429 drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs); 430 connector->status = vmw_du_connector_detect(connector, true); 431 432 ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs, 433 DRM_MODE_ENCODER_VIRTUAL, NULL); 434 if (ret) { 435 DRM_ERROR("Failed to initialize encoder\n"); 436 goto err_free_connector; 437 } 438 439 (void) drm_connector_attach_encoder(connector, encoder); 440 encoder->possible_crtcs = (1 << unit); 441 encoder->possible_clones = 0; 442 443 ret = drm_connector_register(connector); 444 if (ret) { 445 DRM_ERROR("Failed to register connector\n"); 446 goto err_free_encoder; 447 } 448 449 ret = drm_crtc_init_with_planes(dev, crtc, primary, 450 vmw_cmd_supported(dev_priv) ? &cursor->base : NULL, 451 &vmw_legacy_crtc_funcs, NULL); 452 if (ret) { 453 DRM_ERROR("Failed to initialize CRTC\n"); 454 goto err_free_unregister; 455 } 456 457 drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs); 458 459 drm_mode_crtc_set_gamma_size(crtc, 256); 460 461 drm_object_attach_property(&connector->base, 462 dev_priv->hotplug_mode_update_property, 1); 463 drm_object_attach_property(&connector->base, 464 dev->mode_config.suggested_x_property, 0); 465 drm_object_attach_property(&connector->base, 466 dev->mode_config.suggested_y_property, 0); 467 if (dev_priv->implicit_placement_property) 468 drm_object_attach_property 469 (&connector->base, 470 dev_priv->implicit_placement_property, 471 1); 472 473 return 0; 474 475 err_free_unregister: 476 drm_connector_unregister(connector); 477 err_free_encoder: 478 drm_encoder_cleanup(encoder); 479 err_free_connector: 480 drm_connector_cleanup(connector); 481 err_free: 482 kfree(ldu); 483 return ret; 484 } 485 486 int vmw_kms_ldu_init_display(struct vmw_private *dev_priv) 487 { 488 struct drm_device *dev = &dev_priv->drm; 489 int i, ret; 490 int num_display_units = (dev_priv->capabilities & SVGA_CAP_MULTIMON) ? 491 VMWGFX_NUM_DISPLAY_UNITS : 1; 492 493 if (unlikely(dev_priv->ldu_priv)) { 494 return -EINVAL; 495 } 496 497 dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL); 498 if (!dev_priv->ldu_priv) 499 return -ENOMEM; 500 501 INIT_LIST_HEAD(&dev_priv->ldu_priv->active); 502 dev_priv->ldu_priv->num_active = 0; 503 dev_priv->ldu_priv->last_num_active = 0; 504 dev_priv->ldu_priv->fb = NULL; 505 506 vmw_kms_create_implicit_placement_property(dev_priv); 507 508 for (i = 0; i < num_display_units; ++i) { 509 ret = vmw_ldu_init(dev_priv, i); 510 if (ret != 0) 511 goto err_free; 512 } 513 514 dev_priv->active_display_unit = vmw_du_legacy; 515 516 drm_mode_config_reset(dev); 517 518 return 0; 519 520 err_free: 521 kfree(dev_priv->ldu_priv); 522 dev_priv->ldu_priv = NULL; 523 return ret; 524 } 525 526 int vmw_kms_ldu_close_display(struct vmw_private *dev_priv) 527 { 528 if (!dev_priv->ldu_priv) 529 return -ENOSYS; 530 531 BUG_ON(!list_empty(&dev_priv->ldu_priv->active)); 532 533 kfree(dev_priv->ldu_priv); 534 535 return 0; 536 } 537 538 539 int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv, 540 struct vmw_framebuffer *framebuffer, 541 unsigned int flags, unsigned int color, 542 struct drm_clip_rect *clips, 543 unsigned int num_clips, int increment) 544 { 545 size_t fifo_size; 546 int i; 547 548 struct { 549 uint32_t header; 550 SVGAFifoCmdUpdate body; 551 } *cmd; 552 553 fifo_size = sizeof(*cmd) * num_clips; 554 cmd = VMW_CMD_RESERVE(dev_priv, fifo_size); 555 if (unlikely(cmd == NULL)) 556 return -ENOMEM; 557 558 memset(cmd, 0, fifo_size); 559 for (i = 0; i < num_clips; i++, clips += increment) { 560 cmd[i].header = SVGA_CMD_UPDATE; 561 cmd[i].body.x = clips->x1; 562 cmd[i].body.y = clips->y1; 563 cmd[i].body.width = clips->x2 - clips->x1; 564 cmd[i].body.height = clips->y2 - clips->y1; 565 } 566 567 vmw_cmd_commit(dev_priv, fifo_size); 568 return 0; 569 } 570