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 "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 = 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_plane_state *old_state) 283 { 284 struct vmw_private *dev_priv; 285 struct vmw_legacy_display_unit *ldu; 286 struct vmw_framebuffer *vfb; 287 struct drm_framebuffer *fb; 288 struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc; 289 290 291 ldu = vmw_crtc_to_ldu(crtc); 292 dev_priv = vmw_priv(plane->dev); 293 fb = plane->state->fb; 294 295 vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL; 296 297 if (vfb) 298 vmw_ldu_add_active(dev_priv, ldu, vfb); 299 else 300 vmw_ldu_del_active(dev_priv, ldu); 301 302 vmw_ldu_commit_list(dev_priv); 303 } 304 305 306 static const struct drm_plane_funcs vmw_ldu_plane_funcs = { 307 .update_plane = drm_atomic_helper_update_plane, 308 .disable_plane = drm_atomic_helper_disable_plane, 309 .destroy = vmw_du_primary_plane_destroy, 310 .reset = vmw_du_plane_reset, 311 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 312 .atomic_destroy_state = vmw_du_plane_destroy_state, 313 }; 314 315 static const struct drm_plane_funcs vmw_ldu_cursor_funcs = { 316 .update_plane = drm_atomic_helper_update_plane, 317 .disable_plane = drm_atomic_helper_disable_plane, 318 .destroy = vmw_du_cursor_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 /* 325 * Atomic Helpers 326 */ 327 static const struct 328 drm_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = { 329 .atomic_check = vmw_du_cursor_plane_atomic_check, 330 .atomic_update = vmw_du_cursor_plane_atomic_update, 331 .prepare_fb = vmw_du_cursor_plane_prepare_fb, 332 .cleanup_fb = vmw_du_plane_cleanup_fb, 333 }; 334 335 static const struct 336 drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = { 337 .atomic_check = vmw_du_primary_plane_atomic_check, 338 .atomic_update = vmw_ldu_primary_plane_atomic_update, 339 }; 340 341 static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = { 342 .mode_set_nofb = vmw_ldu_crtc_mode_set_nofb, 343 .atomic_check = vmw_du_crtc_atomic_check, 344 .atomic_begin = vmw_du_crtc_atomic_begin, 345 .atomic_flush = vmw_du_crtc_atomic_flush, 346 .atomic_enable = vmw_ldu_crtc_atomic_enable, 347 .atomic_disable = vmw_ldu_crtc_atomic_disable, 348 }; 349 350 351 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit) 352 { 353 struct vmw_legacy_display_unit *ldu; 354 struct drm_device *dev = dev_priv->dev; 355 struct drm_connector *connector; 356 struct drm_encoder *encoder; 357 struct drm_plane *primary, *cursor; 358 struct drm_crtc *crtc; 359 int ret; 360 361 ldu = kzalloc(sizeof(*ldu), GFP_KERNEL); 362 if (!ldu) 363 return -ENOMEM; 364 365 ldu->base.unit = unit; 366 crtc = &ldu->base.crtc; 367 encoder = &ldu->base.encoder; 368 connector = &ldu->base.connector; 369 primary = &ldu->base.primary; 370 cursor = &ldu->base.cursor; 371 372 INIT_LIST_HEAD(&ldu->active); 373 374 ldu->base.pref_active = (unit == 0); 375 ldu->base.pref_width = dev_priv->initial_width; 376 ldu->base.pref_height = dev_priv->initial_height; 377 ldu->base.pref_mode = NULL; 378 379 /* 380 * Remove this after enabling atomic because property values can 381 * only exist in a state object 382 */ 383 ldu->base.is_implicit = true; 384 385 /* Initialize primary plane */ 386 vmw_du_plane_reset(primary); 387 388 ret = drm_universal_plane_init(dev, &ldu->base.primary, 389 0, &vmw_ldu_plane_funcs, 390 vmw_primary_plane_formats, 391 ARRAY_SIZE(vmw_primary_plane_formats), 392 NULL, DRM_PLANE_TYPE_PRIMARY, NULL); 393 if (ret) { 394 DRM_ERROR("Failed to initialize primary plane"); 395 goto err_free; 396 } 397 398 drm_plane_helper_add(primary, &vmw_ldu_primary_plane_helper_funcs); 399 400 /* Initialize cursor plane */ 401 vmw_du_plane_reset(cursor); 402 403 ret = drm_universal_plane_init(dev, &ldu->base.cursor, 404 0, &vmw_ldu_cursor_funcs, 405 vmw_cursor_plane_formats, 406 ARRAY_SIZE(vmw_cursor_plane_formats), 407 NULL, DRM_PLANE_TYPE_CURSOR, NULL); 408 if (ret) { 409 DRM_ERROR("Failed to initialize cursor plane"); 410 drm_plane_cleanup(&ldu->base.primary); 411 goto err_free; 412 } 413 414 drm_plane_helper_add(cursor, &vmw_ldu_cursor_plane_helper_funcs); 415 416 vmw_du_connector_reset(connector); 417 ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, 418 DRM_MODE_CONNECTOR_VIRTUAL); 419 if (ret) { 420 DRM_ERROR("Failed to initialize connector\n"); 421 goto err_free; 422 } 423 424 drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs); 425 connector->status = vmw_du_connector_detect(connector, true); 426 427 ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs, 428 DRM_MODE_ENCODER_VIRTUAL, NULL); 429 if (ret) { 430 DRM_ERROR("Failed to initialize encoder\n"); 431 goto err_free_connector; 432 } 433 434 (void) drm_connector_attach_encoder(connector, encoder); 435 encoder->possible_crtcs = (1 << unit); 436 encoder->possible_clones = 0; 437 438 ret = drm_connector_register(connector); 439 if (ret) { 440 DRM_ERROR("Failed to register connector\n"); 441 goto err_free_encoder; 442 } 443 444 vmw_du_crtc_reset(crtc); 445 ret = drm_crtc_init_with_planes(dev, crtc, &ldu->base.primary, 446 &ldu->base.cursor, 447 &vmw_legacy_crtc_funcs, NULL); 448 if (ret) { 449 DRM_ERROR("Failed to initialize CRTC\n"); 450 goto err_free_unregister; 451 } 452 453 drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs); 454 455 drm_mode_crtc_set_gamma_size(crtc, 256); 456 457 drm_object_attach_property(&connector->base, 458 dev_priv->hotplug_mode_update_property, 1); 459 drm_object_attach_property(&connector->base, 460 dev->mode_config.suggested_x_property, 0); 461 drm_object_attach_property(&connector->base, 462 dev->mode_config.suggested_y_property, 0); 463 if (dev_priv->implicit_placement_property) 464 drm_object_attach_property 465 (&connector->base, 466 dev_priv->implicit_placement_property, 467 1); 468 469 return 0; 470 471 err_free_unregister: 472 drm_connector_unregister(connector); 473 err_free_encoder: 474 drm_encoder_cleanup(encoder); 475 err_free_connector: 476 drm_connector_cleanup(connector); 477 err_free: 478 kfree(ldu); 479 return ret; 480 } 481 482 int vmw_kms_ldu_init_display(struct vmw_private *dev_priv) 483 { 484 struct drm_device *dev = dev_priv->dev; 485 int i, ret; 486 487 if (dev_priv->ldu_priv) { 488 DRM_INFO("ldu system already on\n"); 489 return -EINVAL; 490 } 491 492 dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL); 493 if (!dev_priv->ldu_priv) 494 return -ENOMEM; 495 496 INIT_LIST_HEAD(&dev_priv->ldu_priv->active); 497 dev_priv->ldu_priv->num_active = 0; 498 dev_priv->ldu_priv->last_num_active = 0; 499 dev_priv->ldu_priv->fb = NULL; 500 501 /* for old hardware without multimon only enable one display */ 502 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 503 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); 504 else 505 ret = drm_vblank_init(dev, 1); 506 if (ret != 0) 507 goto err_free; 508 509 vmw_kms_create_implicit_placement_property(dev_priv); 510 511 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 512 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) 513 vmw_ldu_init(dev_priv, i); 514 else 515 vmw_ldu_init(dev_priv, 0); 516 517 dev_priv->active_display_unit = vmw_du_legacy; 518 519 DRM_INFO("Legacy Display Unit initialized\n"); 520 521 return 0; 522 523 err_free: 524 kfree(dev_priv->ldu_priv); 525 dev_priv->ldu_priv = NULL; 526 return ret; 527 } 528 529 int vmw_kms_ldu_close_display(struct vmw_private *dev_priv) 530 { 531 if (!dev_priv->ldu_priv) 532 return -ENOSYS; 533 534 BUG_ON(!list_empty(&dev_priv->ldu_priv->active)); 535 536 kfree(dev_priv->ldu_priv); 537 538 return 0; 539 } 540 541 542 int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv, 543 struct vmw_framebuffer *framebuffer, 544 unsigned int flags, unsigned int color, 545 struct drm_clip_rect *clips, 546 unsigned int num_clips, int increment) 547 { 548 size_t fifo_size; 549 int i; 550 551 struct { 552 uint32_t header; 553 SVGAFifoCmdUpdate body; 554 } *cmd; 555 556 fifo_size = sizeof(*cmd) * num_clips; 557 cmd = vmw_fifo_reserve(dev_priv, fifo_size); 558 if (unlikely(cmd == NULL)) { 559 DRM_ERROR("Fifo reserve failed.\n"); 560 return -ENOMEM; 561 } 562 563 memset(cmd, 0, fifo_size); 564 for (i = 0; i < num_clips; i++, clips += increment) { 565 cmd[i].header = SVGA_CMD_UPDATE; 566 cmd[i].body.x = clips->x1; 567 cmd[i].body.y = clips->y1; 568 cmd[i].body.width = clips->x2 - clips->x1; 569 cmd[i].body.height = clips->y2 - clips->y1; 570 } 571 572 vmw_fifo_commit(dev_priv, fifo_size); 573 return 0; 574 } 575