1 // SPDX-License-Identifier: GPL-2.0 OR MIT 2 /************************************************************************** 3 * 4 * Copyright 2009-2015 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_plane_helper.h> 32 #include <drm/drm_vblank.h> 33 34 #include "vmwgfx_kms.h" 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 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 * @state: Unused 210 * 211 * This is called after a mode set has been completed. Here's 212 * usually a good place to call vmw_ldu_add_active/vmw_ldu_del_active 213 * but since for LDU the display plane is closely tied to the 214 * CRTC, it makes more sense to do those at plane update time. 215 */ 216 static void vmw_ldu_crtc_atomic_enable(struct drm_crtc *crtc, 217 struct drm_atomic_state *state) 218 { 219 } 220 221 /** 222 * vmw_ldu_crtc_atomic_disable - Turns off CRTC 223 * 224 * @crtc: CRTC to be turned off 225 * @state: Unused 226 */ 227 static void vmw_ldu_crtc_atomic_disable(struct drm_crtc *crtc, 228 struct drm_atomic_state *state) 229 { 230 } 231 232 static const struct drm_crtc_funcs vmw_legacy_crtc_funcs = { 233 .gamma_set = vmw_du_crtc_gamma_set, 234 .destroy = vmw_ldu_crtc_destroy, 235 .reset = vmw_du_crtc_reset, 236 .atomic_duplicate_state = vmw_du_crtc_duplicate_state, 237 .atomic_destroy_state = vmw_du_crtc_destroy_state, 238 .set_config = drm_atomic_helper_set_config, 239 .get_vblank_counter = vmw_get_vblank_counter, 240 .enable_vblank = vmw_enable_vblank, 241 .disable_vblank = vmw_disable_vblank, 242 }; 243 244 245 /* 246 * Legacy Display Unit encoder functions 247 */ 248 249 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder) 250 { 251 vmw_ldu_destroy(vmw_encoder_to_ldu(encoder)); 252 } 253 254 static const struct drm_encoder_funcs vmw_legacy_encoder_funcs = { 255 .destroy = vmw_ldu_encoder_destroy, 256 }; 257 258 /* 259 * Legacy Display Unit connector functions 260 */ 261 262 static void vmw_ldu_connector_destroy(struct drm_connector *connector) 263 { 264 vmw_ldu_destroy(vmw_connector_to_ldu(connector)); 265 } 266 267 static const struct drm_connector_funcs vmw_legacy_connector_funcs = { 268 .dpms = vmw_du_connector_dpms, 269 .detect = vmw_du_connector_detect, 270 .fill_modes = vmw_du_connector_fill_modes, 271 .destroy = vmw_ldu_connector_destroy, 272 .reset = vmw_du_connector_reset, 273 .atomic_duplicate_state = vmw_du_connector_duplicate_state, 274 .atomic_destroy_state = vmw_du_connector_destroy_state, 275 }; 276 277 static const struct 278 drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = { 279 }; 280 281 /* 282 * Legacy Display Plane Functions 283 */ 284 285 static void 286 vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane, 287 struct drm_atomic_state *state) 288 { 289 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, 290 plane); 291 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, 292 plane); 293 struct vmw_private *dev_priv; 294 struct vmw_legacy_display_unit *ldu; 295 struct vmw_framebuffer *vfb; 296 struct drm_framebuffer *fb; 297 struct drm_crtc *crtc = new_state->crtc ?: old_state->crtc; 298 299 300 ldu = vmw_crtc_to_ldu(crtc); 301 dev_priv = vmw_priv(plane->dev); 302 fb = new_state->fb; 303 304 vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL; 305 306 if (vfb) 307 vmw_ldu_add_active(dev_priv, ldu, vfb); 308 else 309 vmw_ldu_del_active(dev_priv, ldu); 310 311 vmw_ldu_commit_list(dev_priv); 312 } 313 314 315 static const struct drm_plane_funcs vmw_ldu_plane_funcs = { 316 .update_plane = drm_atomic_helper_update_plane, 317 .disable_plane = drm_atomic_helper_disable_plane, 318 .destroy = vmw_du_primary_plane_destroy, 319 .reset = vmw_du_plane_reset, 320 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 321 .atomic_destroy_state = vmw_du_plane_destroy_state, 322 }; 323 324 static const struct drm_plane_funcs vmw_ldu_cursor_funcs = { 325 .update_plane = drm_atomic_helper_update_plane, 326 .disable_plane = drm_atomic_helper_disable_plane, 327 .destroy = vmw_du_cursor_plane_destroy, 328 .reset = vmw_du_plane_reset, 329 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 330 .atomic_destroy_state = vmw_du_plane_destroy_state, 331 }; 332 333 /* 334 * Atomic Helpers 335 */ 336 static const struct 337 drm_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = { 338 .atomic_check = vmw_du_cursor_plane_atomic_check, 339 .atomic_update = vmw_du_cursor_plane_atomic_update, 340 .prepare_fb = vmw_du_cursor_plane_prepare_fb, 341 .cleanup_fb = vmw_du_plane_cleanup_fb, 342 }; 343 344 static const struct 345 drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = { 346 .atomic_check = vmw_du_primary_plane_atomic_check, 347 .atomic_update = vmw_ldu_primary_plane_atomic_update, 348 }; 349 350 static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = { 351 .mode_set_nofb = vmw_ldu_crtc_mode_set_nofb, 352 .atomic_check = vmw_du_crtc_atomic_check, 353 .atomic_begin = vmw_du_crtc_atomic_begin, 354 .atomic_flush = vmw_du_crtc_atomic_flush, 355 .atomic_enable = vmw_ldu_crtc_atomic_enable, 356 .atomic_disable = vmw_ldu_crtc_atomic_disable, 357 }; 358 359 360 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit) 361 { 362 struct vmw_legacy_display_unit *ldu; 363 struct drm_device *dev = &dev_priv->drm; 364 struct drm_connector *connector; 365 struct drm_encoder *encoder; 366 struct drm_plane *primary, *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, &ldu->base.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, &ldu->base.cursor, 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, &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( 454 dev, crtc, &ldu->base.primary, 455 vmw_cmd_supported(dev_priv) ? &ldu->base.cursor : NULL, 456 &vmw_legacy_crtc_funcs, NULL); 457 if (ret) { 458 DRM_ERROR("Failed to initialize CRTC\n"); 459 goto err_free_unregister; 460 } 461 462 drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs); 463 464 drm_mode_crtc_set_gamma_size(crtc, 256); 465 466 drm_object_attach_property(&connector->base, 467 dev_priv->hotplug_mode_update_property, 1); 468 drm_object_attach_property(&connector->base, 469 dev->mode_config.suggested_x_property, 0); 470 drm_object_attach_property(&connector->base, 471 dev->mode_config.suggested_y_property, 0); 472 if (dev_priv->implicit_placement_property) 473 drm_object_attach_property 474 (&connector->base, 475 dev_priv->implicit_placement_property, 476 1); 477 478 return 0; 479 480 err_free_unregister: 481 drm_connector_unregister(connector); 482 err_free_encoder: 483 drm_encoder_cleanup(encoder); 484 err_free_connector: 485 drm_connector_cleanup(connector); 486 err_free: 487 kfree(ldu); 488 return ret; 489 } 490 491 int vmw_kms_ldu_init_display(struct vmw_private *dev_priv) 492 { 493 struct drm_device *dev = &dev_priv->drm; 494 int i, ret; 495 496 if (unlikely(dev_priv->ldu_priv)) { 497 return -EINVAL; 498 } 499 500 dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL); 501 if (!dev_priv->ldu_priv) 502 return -ENOMEM; 503 504 INIT_LIST_HEAD(&dev_priv->ldu_priv->active); 505 dev_priv->ldu_priv->num_active = 0; 506 dev_priv->ldu_priv->last_num_active = 0; 507 dev_priv->ldu_priv->fb = NULL; 508 509 /* for old hardware without multimon only enable one display */ 510 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 511 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); 512 else 513 ret = drm_vblank_init(dev, 1); 514 if (ret != 0) 515 goto err_free; 516 517 vmw_kms_create_implicit_placement_property(dev_priv); 518 519 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 520 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) 521 vmw_ldu_init(dev_priv, i); 522 else 523 vmw_ldu_init(dev_priv, 0); 524 525 dev_priv->active_display_unit = vmw_du_legacy; 526 527 drm_mode_config_reset(dev); 528 529 return 0; 530 531 err_free: 532 kfree(dev_priv->ldu_priv); 533 dev_priv->ldu_priv = NULL; 534 return ret; 535 } 536 537 int vmw_kms_ldu_close_display(struct vmw_private *dev_priv) 538 { 539 if (!dev_priv->ldu_priv) 540 return -ENOSYS; 541 542 BUG_ON(!list_empty(&dev_priv->ldu_priv->active)); 543 544 kfree(dev_priv->ldu_priv); 545 546 return 0; 547 } 548 549 550 int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv, 551 struct vmw_framebuffer *framebuffer, 552 unsigned int flags, unsigned int color, 553 struct drm_clip_rect *clips, 554 unsigned int num_clips, int increment) 555 { 556 size_t fifo_size; 557 int i; 558 559 struct { 560 uint32_t header; 561 SVGAFifoCmdUpdate body; 562 } *cmd; 563 564 fifo_size = sizeof(*cmd) * num_clips; 565 cmd = VMW_CMD_RESERVE(dev_priv, fifo_size); 566 if (unlikely(cmd == NULL)) 567 return -ENOMEM; 568 569 memset(cmd, 0, fifo_size); 570 for (i = 0; i < num_clips; i++, clips += increment) { 571 cmd[i].header = SVGA_CMD_UPDATE; 572 cmd[i].body.x = clips->x1; 573 cmd[i].body.y = clips->y1; 574 cmd[i].body.width = clips->x2 - clips->x1; 575 cmd[i].body.height = clips->y2 - clips->y1; 576 } 577 578 vmw_cmd_commit(dev_priv, fifo_size); 579 return 0; 580 } 581