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 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID); 129 130 i++; 131 } 132 133 BUG_ON(i != lds->num_active); 134 135 lds->last_num_active = lds->num_active; 136 137 return 0; 138 } 139 140 static int vmw_ldu_del_active(struct vmw_private *vmw_priv, 141 struct vmw_legacy_display_unit *ldu) 142 { 143 struct vmw_legacy_display *ld = vmw_priv->ldu_priv; 144 if (list_empty(&ldu->active)) 145 return 0; 146 147 /* Must init otherwise list_empty(&ldu->active) will not work. */ 148 list_del_init(&ldu->active); 149 if (--(ld->num_active) == 0) { 150 BUG_ON(!ld->fb); 151 if (ld->fb->unpin) 152 ld->fb->unpin(ld->fb); 153 ld->fb = NULL; 154 } 155 156 return 0; 157 } 158 159 static int vmw_ldu_add_active(struct vmw_private *vmw_priv, 160 struct vmw_legacy_display_unit *ldu, 161 struct vmw_framebuffer *vfb) 162 { 163 struct vmw_legacy_display *ld = vmw_priv->ldu_priv; 164 struct vmw_legacy_display_unit *entry; 165 struct list_head *at; 166 167 BUG_ON(!ld->num_active && ld->fb); 168 if (vfb != ld->fb) { 169 if (ld->fb && ld->fb->unpin) 170 ld->fb->unpin(ld->fb); 171 vmw_svga_enable(vmw_priv); 172 if (vfb->pin) 173 vfb->pin(vfb); 174 ld->fb = vfb; 175 } 176 177 if (!list_empty(&ldu->active)) 178 return 0; 179 180 at = &ld->active; 181 list_for_each_entry(entry, &ld->active, active) { 182 if (entry->base.unit > ldu->base.unit) 183 break; 184 185 at = &entry->active; 186 } 187 188 list_add(&ldu->active, at); 189 190 ld->num_active++; 191 192 return 0; 193 } 194 195 /** 196 * vmw_ldu_crtc_mode_set_nofb - Enable svga 197 * 198 * @crtc: CRTC associated with the new screen 199 * 200 * For LDU, just enable the svga 201 */ 202 static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc) 203 { 204 } 205 206 /** 207 * vmw_ldu_crtc_atomic_enable - Noop 208 * 209 * @crtc: CRTC associated with the new screen 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 */ 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_plane_state *old_state) 287 { 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 = plane->state->crtc ?: old_state->crtc; 293 294 295 ldu = vmw_crtc_to_ldu(crtc); 296 dev_priv = vmw_priv(plane->dev); 297 fb = plane->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_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->dev; 359 struct drm_connector *connector; 360 struct drm_encoder *encoder; 361 struct drm_plane *primary, *cursor; 362 struct drm_crtc *crtc; 363 int ret; 364 365 ldu = kzalloc(sizeof(*ldu), GFP_KERNEL); 366 if (!ldu) 367 return -ENOMEM; 368 369 ldu->base.unit = unit; 370 crtc = &ldu->base.crtc; 371 encoder = &ldu->base.encoder; 372 connector = &ldu->base.connector; 373 primary = &ldu->base.primary; 374 cursor = &ldu->base.cursor; 375 376 INIT_LIST_HEAD(&ldu->active); 377 378 ldu->base.pref_active = (unit == 0); 379 ldu->base.pref_width = dev_priv->initial_width; 380 ldu->base.pref_height = dev_priv->initial_height; 381 ldu->base.pref_mode = NULL; 382 383 /* 384 * Remove this after enabling atomic because property values can 385 * only exist in a state object 386 */ 387 ldu->base.is_implicit = true; 388 389 /* Initialize primary plane */ 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 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 ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, 417 DRM_MODE_CONNECTOR_VIRTUAL); 418 if (ret) { 419 DRM_ERROR("Failed to initialize connector\n"); 420 goto err_free; 421 } 422 423 drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs); 424 connector->status = vmw_du_connector_detect(connector, true); 425 426 ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs, 427 DRM_MODE_ENCODER_VIRTUAL, NULL); 428 if (ret) { 429 DRM_ERROR("Failed to initialize encoder\n"); 430 goto err_free_connector; 431 } 432 433 (void) drm_connector_attach_encoder(connector, encoder); 434 encoder->possible_crtcs = (1 << unit); 435 encoder->possible_clones = 0; 436 437 ret = drm_connector_register(connector); 438 if (ret) { 439 DRM_ERROR("Failed to register connector\n"); 440 goto err_free_encoder; 441 } 442 443 ret = drm_crtc_init_with_planes(dev, crtc, &ldu->base.primary, 444 &ldu->base.cursor, 445 &vmw_legacy_crtc_funcs, NULL); 446 if (ret) { 447 DRM_ERROR("Failed to initialize CRTC\n"); 448 goto err_free_unregister; 449 } 450 451 drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs); 452 453 drm_mode_crtc_set_gamma_size(crtc, 256); 454 455 drm_object_attach_property(&connector->base, 456 dev_priv->hotplug_mode_update_property, 1); 457 drm_object_attach_property(&connector->base, 458 dev->mode_config.suggested_x_property, 0); 459 drm_object_attach_property(&connector->base, 460 dev->mode_config.suggested_y_property, 0); 461 if (dev_priv->implicit_placement_property) 462 drm_object_attach_property 463 (&connector->base, 464 dev_priv->implicit_placement_property, 465 1); 466 467 return 0; 468 469 err_free_unregister: 470 drm_connector_unregister(connector); 471 err_free_encoder: 472 drm_encoder_cleanup(encoder); 473 err_free_connector: 474 drm_connector_cleanup(connector); 475 err_free: 476 kfree(ldu); 477 return ret; 478 } 479 480 int vmw_kms_ldu_init_display(struct vmw_private *dev_priv) 481 { 482 struct drm_device *dev = dev_priv->dev; 483 int i, ret; 484 485 if (dev_priv->ldu_priv) { 486 DRM_INFO("ldu system already on\n"); 487 return -EINVAL; 488 } 489 490 dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL); 491 if (!dev_priv->ldu_priv) 492 return -ENOMEM; 493 494 INIT_LIST_HEAD(&dev_priv->ldu_priv->active); 495 dev_priv->ldu_priv->num_active = 0; 496 dev_priv->ldu_priv->last_num_active = 0; 497 dev_priv->ldu_priv->fb = NULL; 498 499 /* for old hardware without multimon only enable one display */ 500 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 501 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); 502 else 503 ret = drm_vblank_init(dev, 1); 504 if (ret != 0) 505 goto err_free; 506 507 vmw_kms_create_implicit_placement_property(dev_priv); 508 509 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 510 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) 511 vmw_ldu_init(dev_priv, i); 512 else 513 vmw_ldu_init(dev_priv, 0); 514 515 dev_priv->active_display_unit = vmw_du_legacy; 516 517 drm_mode_config_reset(dev); 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 return -ENOMEM; 560 561 memset(cmd, 0, fifo_size); 562 for (i = 0; i < num_clips; i++, clips += increment) { 563 cmd[i].header = SVGA_CMD_UPDATE; 564 cmd[i].body.x = clips->x1; 565 cmd[i].body.y = clips->y1; 566 cmd[i].body.width = clips->x2 - clips->x1; 567 cmd[i].body.height = clips->y2 - clips->y1; 568 } 569 570 vmw_fifo_commit(dev_priv, fifo_size); 571 return 0; 572 } 573