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 = 0; 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 i++; 96 } 97 98 if (crtc == NULL) 99 return 0; 100 fb = entry->base.crtc.primary->state->fb; 101 102 return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0], 103 fb->format->cpp[0] * 8, 104 fb->format->depth); 105 } 106 107 if (!list_empty(&lds->active)) { 108 entry = list_entry(lds->active.next, typeof(*entry), active); 109 fb = entry->base.crtc.primary->state->fb; 110 111 vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0], 112 fb->format->cpp[0] * 8, fb->format->depth); 113 } 114 115 /* Make sure we always show something. */ 116 vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 117 lds->num_active ? lds->num_active : 1); 118 119 i = 0; 120 list_for_each_entry(entry, &lds->active, active) { 121 crtc = &entry->base.crtc; 122 123 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i); 124 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i); 125 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x); 126 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y); 127 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay); 128 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay); 129 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID); 130 131 i++; 132 } 133 134 BUG_ON(i != lds->num_active); 135 136 lds->last_num_active = lds->num_active; 137 138 return 0; 139 } 140 141 static int vmw_ldu_del_active(struct vmw_private *vmw_priv, 142 struct vmw_legacy_display_unit *ldu) 143 { 144 struct vmw_legacy_display *ld = vmw_priv->ldu_priv; 145 if (list_empty(&ldu->active)) 146 return 0; 147 148 /* Must init otherwise list_empty(&ldu->active) will not work. */ 149 list_del_init(&ldu->active); 150 if (--(ld->num_active) == 0) { 151 BUG_ON(!ld->fb); 152 if (ld->fb->unpin) 153 ld->fb->unpin(ld->fb); 154 ld->fb = NULL; 155 } 156 157 return 0; 158 } 159 160 static int vmw_ldu_add_active(struct vmw_private *vmw_priv, 161 struct vmw_legacy_display_unit *ldu, 162 struct vmw_framebuffer *vfb) 163 { 164 struct vmw_legacy_display *ld = vmw_priv->ldu_priv; 165 struct vmw_legacy_display_unit *entry; 166 struct list_head *at; 167 168 BUG_ON(!ld->num_active && ld->fb); 169 if (vfb != ld->fb) { 170 if (ld->fb && ld->fb->unpin) 171 ld->fb->unpin(ld->fb); 172 vmw_svga_enable(vmw_priv); 173 if (vfb->pin) 174 vfb->pin(vfb); 175 ld->fb = vfb; 176 } 177 178 if (!list_empty(&ldu->active)) 179 return 0; 180 181 at = &ld->active; 182 list_for_each_entry(entry, &ld->active, active) { 183 if (entry->base.unit > ldu->base.unit) 184 break; 185 186 at = &entry->active; 187 } 188 189 list_add(&ldu->active, at); 190 191 ld->num_active++; 192 193 return 0; 194 } 195 196 /** 197 * vmw_ldu_crtc_mode_set_nofb - Enable svga 198 * 199 * @crtc: CRTC associated with the new screen 200 * 201 * For LDU, just enable the svga 202 */ 203 static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc) 204 { 205 } 206 207 /** 208 * vmw_ldu_crtc_atomic_enable - Noop 209 * 210 * @crtc: CRTC associated with the new screen 211 * 212 * This is called after a mode set has been completed. Here's 213 * usually a good place to call vmw_ldu_add_active/vmw_ldu_del_active 214 * but since for LDU the display plane is closely tied to the 215 * CRTC, it makes more sense to do those at plane update time. 216 */ 217 static void vmw_ldu_crtc_atomic_enable(struct drm_crtc *crtc, 218 struct drm_crtc_state *old_state) 219 { 220 } 221 222 /** 223 * vmw_ldu_crtc_atomic_disable - Turns off CRTC 224 * 225 * @crtc: CRTC to be turned off 226 */ 227 static void vmw_ldu_crtc_atomic_disable(struct drm_crtc *crtc, 228 struct drm_crtc_state *old_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 }; 240 241 242 /* 243 * Legacy Display Unit encoder functions 244 */ 245 246 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder) 247 { 248 vmw_ldu_destroy(vmw_encoder_to_ldu(encoder)); 249 } 250 251 static const struct drm_encoder_funcs vmw_legacy_encoder_funcs = { 252 .destroy = vmw_ldu_encoder_destroy, 253 }; 254 255 /* 256 * Legacy Display Unit connector functions 257 */ 258 259 static void vmw_ldu_connector_destroy(struct drm_connector *connector) 260 { 261 vmw_ldu_destroy(vmw_connector_to_ldu(connector)); 262 } 263 264 static const struct drm_connector_funcs vmw_legacy_connector_funcs = { 265 .dpms = vmw_du_connector_dpms, 266 .detect = vmw_du_connector_detect, 267 .fill_modes = vmw_du_connector_fill_modes, 268 .destroy = vmw_ldu_connector_destroy, 269 .reset = vmw_du_connector_reset, 270 .atomic_duplicate_state = vmw_du_connector_duplicate_state, 271 .atomic_destroy_state = vmw_du_connector_destroy_state, 272 }; 273 274 static const struct 275 drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = { 276 }; 277 278 /* 279 * Legacy Display Plane Functions 280 */ 281 282 static void 283 vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane, 284 struct drm_plane_state *old_state) 285 { 286 struct vmw_private *dev_priv; 287 struct vmw_legacy_display_unit *ldu; 288 struct vmw_framebuffer *vfb; 289 struct drm_framebuffer *fb; 290 struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc; 291 292 293 ldu = vmw_crtc_to_ldu(crtc); 294 dev_priv = vmw_priv(plane->dev); 295 fb = plane->state->fb; 296 297 vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL; 298 299 if (vfb) 300 vmw_ldu_add_active(dev_priv, ldu, vfb); 301 else 302 vmw_ldu_del_active(dev_priv, ldu); 303 304 vmw_ldu_commit_list(dev_priv); 305 } 306 307 308 static const struct drm_plane_funcs vmw_ldu_plane_funcs = { 309 .update_plane = drm_atomic_helper_update_plane, 310 .disable_plane = drm_atomic_helper_disable_plane, 311 .destroy = vmw_du_primary_plane_destroy, 312 .reset = vmw_du_plane_reset, 313 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 314 .atomic_destroy_state = vmw_du_plane_destroy_state, 315 }; 316 317 static const struct drm_plane_funcs vmw_ldu_cursor_funcs = { 318 .update_plane = drm_atomic_helper_update_plane, 319 .disable_plane = drm_atomic_helper_disable_plane, 320 .destroy = vmw_du_cursor_plane_destroy, 321 .reset = vmw_du_plane_reset, 322 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 323 .atomic_destroy_state = vmw_du_plane_destroy_state, 324 }; 325 326 /* 327 * Atomic Helpers 328 */ 329 static const struct 330 drm_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = { 331 .atomic_check = vmw_du_cursor_plane_atomic_check, 332 .atomic_update = vmw_du_cursor_plane_atomic_update, 333 .prepare_fb = vmw_du_cursor_plane_prepare_fb, 334 .cleanup_fb = vmw_du_plane_cleanup_fb, 335 }; 336 337 static const struct 338 drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = { 339 .atomic_check = vmw_du_primary_plane_atomic_check, 340 .atomic_update = vmw_ldu_primary_plane_atomic_update, 341 }; 342 343 static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = { 344 .mode_set_nofb = vmw_ldu_crtc_mode_set_nofb, 345 .atomic_check = vmw_du_crtc_atomic_check, 346 .atomic_begin = vmw_du_crtc_atomic_begin, 347 .atomic_flush = vmw_du_crtc_atomic_flush, 348 .atomic_enable = vmw_ldu_crtc_atomic_enable, 349 .atomic_disable = vmw_ldu_crtc_atomic_disable, 350 }; 351 352 353 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit) 354 { 355 struct vmw_legacy_display_unit *ldu; 356 struct drm_device *dev = dev_priv->dev; 357 struct drm_connector *connector; 358 struct drm_encoder *encoder; 359 struct drm_plane *primary, *cursor; 360 struct drm_crtc *crtc; 361 int ret; 362 363 ldu = kzalloc(sizeof(*ldu), GFP_KERNEL); 364 if (!ldu) 365 return -ENOMEM; 366 367 ldu->base.unit = unit; 368 crtc = &ldu->base.crtc; 369 encoder = &ldu->base.encoder; 370 connector = &ldu->base.connector; 371 primary = &ldu->base.primary; 372 cursor = &ldu->base.cursor; 373 374 INIT_LIST_HEAD(&ldu->active); 375 376 ldu->base.pref_active = (unit == 0); 377 ldu->base.pref_width = dev_priv->initial_width; 378 ldu->base.pref_height = dev_priv->initial_height; 379 ldu->base.pref_mode = NULL; 380 381 /* 382 * Remove this after enabling atomic because property values can 383 * only exist in a state object 384 */ 385 ldu->base.is_implicit = true; 386 387 /* Initialize primary plane */ 388 vmw_du_plane_reset(primary); 389 390 ret = drm_universal_plane_init(dev, &ldu->base.primary, 391 0, &vmw_ldu_plane_funcs, 392 vmw_primary_plane_formats, 393 ARRAY_SIZE(vmw_primary_plane_formats), 394 NULL, DRM_PLANE_TYPE_PRIMARY, NULL); 395 if (ret) { 396 DRM_ERROR("Failed to initialize primary plane"); 397 goto err_free; 398 } 399 400 drm_plane_helper_add(primary, &vmw_ldu_primary_plane_helper_funcs); 401 402 /* Initialize cursor plane */ 403 vmw_du_plane_reset(cursor); 404 405 ret = drm_universal_plane_init(dev, &ldu->base.cursor, 406 0, &vmw_ldu_cursor_funcs, 407 vmw_cursor_plane_formats, 408 ARRAY_SIZE(vmw_cursor_plane_formats), 409 NULL, DRM_PLANE_TYPE_CURSOR, NULL); 410 if (ret) { 411 DRM_ERROR("Failed to initialize cursor plane"); 412 drm_plane_cleanup(&ldu->base.primary); 413 goto err_free; 414 } 415 416 drm_plane_helper_add(cursor, &vmw_ldu_cursor_plane_helper_funcs); 417 418 vmw_du_connector_reset(connector); 419 ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, 420 DRM_MODE_CONNECTOR_VIRTUAL); 421 if (ret) { 422 DRM_ERROR("Failed to initialize connector\n"); 423 goto err_free; 424 } 425 426 drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs); 427 connector->status = vmw_du_connector_detect(connector, true); 428 429 ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs, 430 DRM_MODE_ENCODER_VIRTUAL, NULL); 431 if (ret) { 432 DRM_ERROR("Failed to initialize encoder\n"); 433 goto err_free_connector; 434 } 435 436 (void) drm_connector_attach_encoder(connector, encoder); 437 encoder->possible_crtcs = (1 << unit); 438 encoder->possible_clones = 0; 439 440 ret = drm_connector_register(connector); 441 if (ret) { 442 DRM_ERROR("Failed to register connector\n"); 443 goto err_free_encoder; 444 } 445 446 vmw_du_crtc_reset(crtc); 447 ret = drm_crtc_init_with_planes(dev, crtc, &ldu->base.primary, 448 &ldu->base.cursor, 449 &vmw_legacy_crtc_funcs, NULL); 450 if (ret) { 451 DRM_ERROR("Failed to initialize CRTC\n"); 452 goto err_free_unregister; 453 } 454 455 drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs); 456 457 drm_mode_crtc_set_gamma_size(crtc, 256); 458 459 drm_object_attach_property(&connector->base, 460 dev_priv->hotplug_mode_update_property, 1); 461 drm_object_attach_property(&connector->base, 462 dev->mode_config.suggested_x_property, 0); 463 drm_object_attach_property(&connector->base, 464 dev->mode_config.suggested_y_property, 0); 465 if (dev_priv->implicit_placement_property) 466 drm_object_attach_property 467 (&connector->base, 468 dev_priv->implicit_placement_property, 469 1); 470 471 return 0; 472 473 err_free_unregister: 474 drm_connector_unregister(connector); 475 err_free_encoder: 476 drm_encoder_cleanup(encoder); 477 err_free_connector: 478 drm_connector_cleanup(connector); 479 err_free: 480 kfree(ldu); 481 return ret; 482 } 483 484 int vmw_kms_ldu_init_display(struct vmw_private *dev_priv) 485 { 486 struct drm_device *dev = dev_priv->dev; 487 int i, ret; 488 489 if (dev_priv->ldu_priv) { 490 DRM_INFO("ldu system already on\n"); 491 return -EINVAL; 492 } 493 494 dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL); 495 if (!dev_priv->ldu_priv) 496 return -ENOMEM; 497 498 INIT_LIST_HEAD(&dev_priv->ldu_priv->active); 499 dev_priv->ldu_priv->num_active = 0; 500 dev_priv->ldu_priv->last_num_active = 0; 501 dev_priv->ldu_priv->fb = NULL; 502 503 /* for old hardware without multimon only enable one display */ 504 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 505 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); 506 else 507 ret = drm_vblank_init(dev, 1); 508 if (ret != 0) 509 goto err_free; 510 511 vmw_kms_create_implicit_placement_property(dev_priv); 512 513 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 514 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) 515 vmw_ldu_init(dev_priv, i); 516 else 517 vmw_ldu_init(dev_priv, 0); 518 519 dev_priv->active_display_unit = vmw_du_legacy; 520 521 DRM_INFO("Legacy Display Unit initialized\n"); 522 523 return 0; 524 525 err_free: 526 kfree(dev_priv->ldu_priv); 527 dev_priv->ldu_priv = NULL; 528 return ret; 529 } 530 531 int vmw_kms_ldu_close_display(struct vmw_private *dev_priv) 532 { 533 if (!dev_priv->ldu_priv) 534 return -ENOSYS; 535 536 BUG_ON(!list_empty(&dev_priv->ldu_priv->active)); 537 538 kfree(dev_priv->ldu_priv); 539 540 return 0; 541 } 542 543 544 int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv, 545 struct vmw_framebuffer *framebuffer, 546 unsigned int flags, unsigned int color, 547 struct drm_clip_rect *clips, 548 unsigned int num_clips, int increment) 549 { 550 size_t fifo_size; 551 int i; 552 553 struct { 554 uint32_t header; 555 SVGAFifoCmdUpdate body; 556 } *cmd; 557 558 fifo_size = sizeof(*cmd) * num_clips; 559 cmd = VMW_FIFO_RESERVE(dev_priv, fifo_size); 560 if (unlikely(cmd == NULL)) 561 return -ENOMEM; 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