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 * 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_atomic_state *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_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 .get_vblank_counter = vmw_get_vblank_counter, 238 .enable_vblank = vmw_enable_vblank, 239 .disable_vblank = vmw_disable_vblank, 240 }; 241 242 243 /* 244 * Legacy Display Unit encoder functions 245 */ 246 247 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder) 248 { 249 vmw_ldu_destroy(vmw_encoder_to_ldu(encoder)); 250 } 251 252 static const struct drm_encoder_funcs vmw_legacy_encoder_funcs = { 253 .destroy = vmw_ldu_encoder_destroy, 254 }; 255 256 /* 257 * Legacy Display Unit connector functions 258 */ 259 260 static void vmw_ldu_connector_destroy(struct drm_connector *connector) 261 { 262 vmw_ldu_destroy(vmw_connector_to_ldu(connector)); 263 } 264 265 static const struct drm_connector_funcs vmw_legacy_connector_funcs = { 266 .dpms = vmw_du_connector_dpms, 267 .detect = vmw_du_connector_detect, 268 .fill_modes = vmw_du_connector_fill_modes, 269 .destroy = vmw_ldu_connector_destroy, 270 .reset = vmw_du_connector_reset, 271 .atomic_duplicate_state = vmw_du_connector_duplicate_state, 272 .atomic_destroy_state = vmw_du_connector_destroy_state, 273 }; 274 275 static const struct 276 drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = { 277 }; 278 279 /* 280 * Legacy Display Plane Functions 281 */ 282 283 static void 284 vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane, 285 struct drm_plane_state *old_state) 286 { 287 struct vmw_private *dev_priv; 288 struct vmw_legacy_display_unit *ldu; 289 struct vmw_framebuffer *vfb; 290 struct drm_framebuffer *fb; 291 struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc; 292 293 294 ldu = vmw_crtc_to_ldu(crtc); 295 dev_priv = vmw_priv(plane->dev); 296 fb = plane->state->fb; 297 298 vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL; 299 300 if (vfb) 301 vmw_ldu_add_active(dev_priv, ldu, vfb); 302 else 303 vmw_ldu_del_active(dev_priv, ldu); 304 305 vmw_ldu_commit_list(dev_priv); 306 } 307 308 309 static const struct drm_plane_funcs vmw_ldu_plane_funcs = { 310 .update_plane = drm_atomic_helper_update_plane, 311 .disable_plane = drm_atomic_helper_disable_plane, 312 .destroy = vmw_du_primary_plane_destroy, 313 .reset = vmw_du_plane_reset, 314 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 315 .atomic_destroy_state = vmw_du_plane_destroy_state, 316 }; 317 318 static const struct drm_plane_funcs vmw_ldu_cursor_funcs = { 319 .update_plane = drm_atomic_helper_update_plane, 320 .disable_plane = drm_atomic_helper_disable_plane, 321 .destroy = vmw_du_cursor_plane_destroy, 322 .reset = vmw_du_plane_reset, 323 .atomic_duplicate_state = vmw_du_plane_duplicate_state, 324 .atomic_destroy_state = vmw_du_plane_destroy_state, 325 }; 326 327 /* 328 * Atomic Helpers 329 */ 330 static const struct 331 drm_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = { 332 .atomic_check = vmw_du_cursor_plane_atomic_check, 333 .atomic_update = vmw_du_cursor_plane_atomic_update, 334 .prepare_fb = vmw_du_cursor_plane_prepare_fb, 335 .cleanup_fb = vmw_du_plane_cleanup_fb, 336 }; 337 338 static const struct 339 drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = { 340 .atomic_check = vmw_du_primary_plane_atomic_check, 341 .atomic_update = vmw_ldu_primary_plane_atomic_update, 342 }; 343 344 static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = { 345 .mode_set_nofb = vmw_ldu_crtc_mode_set_nofb, 346 .atomic_check = vmw_du_crtc_atomic_check, 347 .atomic_begin = vmw_du_crtc_atomic_begin, 348 .atomic_flush = vmw_du_crtc_atomic_flush, 349 .atomic_enable = vmw_ldu_crtc_atomic_enable, 350 .atomic_disable = vmw_ldu_crtc_atomic_disable, 351 }; 352 353 354 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit) 355 { 356 struct vmw_legacy_display_unit *ldu; 357 struct drm_device *dev = &dev_priv->drm; 358 struct drm_connector *connector; 359 struct drm_encoder *encoder; 360 struct drm_plane *primary, *cursor; 361 struct drm_crtc *crtc; 362 int ret; 363 364 ldu = kzalloc(sizeof(*ldu), GFP_KERNEL); 365 if (!ldu) 366 return -ENOMEM; 367 368 ldu->base.unit = unit; 369 crtc = &ldu->base.crtc; 370 encoder = &ldu->base.encoder; 371 connector = &ldu->base.connector; 372 primary = &ldu->base.primary; 373 cursor = &ldu->base.cursor; 374 375 INIT_LIST_HEAD(&ldu->active); 376 377 ldu->base.pref_active = (unit == 0); 378 ldu->base.pref_width = dev_priv->initial_width; 379 ldu->base.pref_height = dev_priv->initial_height; 380 ldu->base.pref_mode = NULL; 381 382 /* 383 * Remove this after enabling atomic because property values can 384 * only exist in a state object 385 */ 386 ldu->base.is_implicit = true; 387 388 /* Initialize primary plane */ 389 ret = drm_universal_plane_init(dev, &ldu->base.primary, 390 0, &vmw_ldu_plane_funcs, 391 vmw_primary_plane_formats, 392 ARRAY_SIZE(vmw_primary_plane_formats), 393 NULL, DRM_PLANE_TYPE_PRIMARY, NULL); 394 if (ret) { 395 DRM_ERROR("Failed to initialize primary plane"); 396 goto err_free; 397 } 398 399 drm_plane_helper_add(primary, &vmw_ldu_primary_plane_helper_funcs); 400 401 /* Initialize cursor plane */ 402 ret = drm_universal_plane_init(dev, &ldu->base.cursor, 403 0, &vmw_ldu_cursor_funcs, 404 vmw_cursor_plane_formats, 405 ARRAY_SIZE(vmw_cursor_plane_formats), 406 NULL, DRM_PLANE_TYPE_CURSOR, NULL); 407 if (ret) { 408 DRM_ERROR("Failed to initialize cursor plane"); 409 drm_plane_cleanup(&ldu->base.primary); 410 goto err_free; 411 } 412 413 drm_plane_helper_add(cursor, &vmw_ldu_cursor_plane_helper_funcs); 414 415 ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, 416 DRM_MODE_CONNECTOR_VIRTUAL); 417 if (ret) { 418 DRM_ERROR("Failed to initialize connector\n"); 419 goto err_free; 420 } 421 422 drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs); 423 connector->status = vmw_du_connector_detect(connector, true); 424 425 ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs, 426 DRM_MODE_ENCODER_VIRTUAL, NULL); 427 if (ret) { 428 DRM_ERROR("Failed to initialize encoder\n"); 429 goto err_free_connector; 430 } 431 432 (void) drm_connector_attach_encoder(connector, encoder); 433 encoder->possible_crtcs = (1 << unit); 434 encoder->possible_clones = 0; 435 436 ret = drm_connector_register(connector); 437 if (ret) { 438 DRM_ERROR("Failed to register connector\n"); 439 goto err_free_encoder; 440 } 441 442 ret = drm_crtc_init_with_planes(dev, crtc, &ldu->base.primary, 443 &ldu->base.cursor, 444 &vmw_legacy_crtc_funcs, NULL); 445 if (ret) { 446 DRM_ERROR("Failed to initialize CRTC\n"); 447 goto err_free_unregister; 448 } 449 450 drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs); 451 452 drm_mode_crtc_set_gamma_size(crtc, 256); 453 454 drm_object_attach_property(&connector->base, 455 dev_priv->hotplug_mode_update_property, 1); 456 drm_object_attach_property(&connector->base, 457 dev->mode_config.suggested_x_property, 0); 458 drm_object_attach_property(&connector->base, 459 dev->mode_config.suggested_y_property, 0); 460 if (dev_priv->implicit_placement_property) 461 drm_object_attach_property 462 (&connector->base, 463 dev_priv->implicit_placement_property, 464 1); 465 466 return 0; 467 468 err_free_unregister: 469 drm_connector_unregister(connector); 470 err_free_encoder: 471 drm_encoder_cleanup(encoder); 472 err_free_connector: 473 drm_connector_cleanup(connector); 474 err_free: 475 kfree(ldu); 476 return ret; 477 } 478 479 int vmw_kms_ldu_init_display(struct vmw_private *dev_priv) 480 { 481 struct drm_device *dev = &dev_priv->drm; 482 int i, ret; 483 484 if (dev_priv->ldu_priv) { 485 DRM_INFO("ldu system already on\n"); 486 return -EINVAL; 487 } 488 489 dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL); 490 if (!dev_priv->ldu_priv) 491 return -ENOMEM; 492 493 INIT_LIST_HEAD(&dev_priv->ldu_priv->active); 494 dev_priv->ldu_priv->num_active = 0; 495 dev_priv->ldu_priv->last_num_active = 0; 496 dev_priv->ldu_priv->fb = NULL; 497 498 /* for old hardware without multimon only enable one display */ 499 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 500 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); 501 else 502 ret = drm_vblank_init(dev, 1); 503 if (ret != 0) 504 goto err_free; 505 506 vmw_kms_create_implicit_placement_property(dev_priv); 507 508 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 509 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) 510 vmw_ldu_init(dev_priv, i); 511 else 512 vmw_ldu_init(dev_priv, 0); 513 514 dev_priv->active_display_unit = vmw_du_legacy; 515 516 drm_mode_config_reset(dev); 517 518 DRM_INFO("Legacy Display Unit initialized\n"); 519 520 return 0; 521 522 err_free: 523 kfree(dev_priv->ldu_priv); 524 dev_priv->ldu_priv = NULL; 525 return ret; 526 } 527 528 int vmw_kms_ldu_close_display(struct vmw_private *dev_priv) 529 { 530 if (!dev_priv->ldu_priv) 531 return -ENOSYS; 532 533 BUG_ON(!list_empty(&dev_priv->ldu_priv->active)); 534 535 kfree(dev_priv->ldu_priv); 536 537 return 0; 538 } 539 540 541 int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv, 542 struct vmw_framebuffer *framebuffer, 543 unsigned int flags, unsigned int color, 544 struct drm_clip_rect *clips, 545 unsigned int num_clips, int increment) 546 { 547 size_t fifo_size; 548 int i; 549 550 struct { 551 uint32_t header; 552 SVGAFifoCmdUpdate body; 553 } *cmd; 554 555 fifo_size = sizeof(*cmd) * num_clips; 556 cmd = VMW_CMD_RESERVE(dev_priv, fifo_size); 557 if (unlikely(cmd == NULL)) 558 return -ENOMEM; 559 560 memset(cmd, 0, fifo_size); 561 for (i = 0; i < num_clips; i++, clips += increment) { 562 cmd[i].header = SVGA_CMD_UPDATE; 563 cmd[i].body.x = clips->x1; 564 cmd[i].body.y = clips->y1; 565 cmd[i].body.width = clips->x2 - clips->x1; 566 cmd[i].body.height = clips->y2 - clips->y1; 567 } 568 569 vmw_cmd_commit(dev_priv, fifo_size); 570 return 0; 571 } 572