1 /************************************************************************** 2 * 3 * Copyright © 2011 VMware, Inc., Palo Alto, CA., USA 4 * All Rights Reserved. 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 31 32 #define vmw_crtc_to_sou(x) \ 33 container_of(x, struct vmw_screen_object_unit, base.crtc) 34 #define vmw_encoder_to_sou(x) \ 35 container_of(x, struct vmw_screen_object_unit, base.encoder) 36 #define vmw_connector_to_sou(x) \ 37 container_of(x, struct vmw_screen_object_unit, base.connector) 38 39 struct vmw_screen_object_display { 40 unsigned num_implicit; 41 42 struct vmw_framebuffer *implicit_fb; 43 }; 44 45 /** 46 * Display unit using screen objects. 47 */ 48 struct vmw_screen_object_unit { 49 struct vmw_display_unit base; 50 51 unsigned long buffer_size; /**< Size of allocated buffer */ 52 struct vmw_dma_buffer *buffer; /**< Backing store buffer */ 53 54 bool defined; 55 bool active_implicit; 56 }; 57 58 static void vmw_sou_destroy(struct vmw_screen_object_unit *sou) 59 { 60 vmw_display_unit_cleanup(&sou->base); 61 kfree(sou); 62 } 63 64 65 /* 66 * Screen Object Display Unit CRTC functions 67 */ 68 69 static void vmw_sou_crtc_destroy(struct drm_crtc *crtc) 70 { 71 vmw_sou_destroy(vmw_crtc_to_sou(crtc)); 72 } 73 74 static void vmw_sou_del_active(struct vmw_private *vmw_priv, 75 struct vmw_screen_object_unit *sou) 76 { 77 struct vmw_screen_object_display *ld = vmw_priv->sou_priv; 78 79 if (sou->active_implicit) { 80 if (--(ld->num_implicit) == 0) 81 ld->implicit_fb = NULL; 82 sou->active_implicit = false; 83 } 84 } 85 86 static void vmw_sou_add_active(struct vmw_private *vmw_priv, 87 struct vmw_screen_object_unit *sou, 88 struct vmw_framebuffer *vfb) 89 { 90 struct vmw_screen_object_display *ld = vmw_priv->sou_priv; 91 92 BUG_ON(!ld->num_implicit && ld->implicit_fb); 93 94 if (!sou->active_implicit && sou->base.is_implicit) { 95 ld->implicit_fb = vfb; 96 sou->active_implicit = true; 97 ld->num_implicit++; 98 } 99 } 100 101 /** 102 * Send the fifo command to create a screen. 103 */ 104 static int vmw_sou_fifo_create(struct vmw_private *dev_priv, 105 struct vmw_screen_object_unit *sou, 106 uint32_t x, uint32_t y, 107 struct drm_display_mode *mode) 108 { 109 size_t fifo_size; 110 111 struct { 112 struct { 113 uint32_t cmdType; 114 } header; 115 SVGAScreenObject obj; 116 } *cmd; 117 118 BUG_ON(!sou->buffer); 119 120 fifo_size = sizeof(*cmd); 121 cmd = vmw_fifo_reserve(dev_priv, fifo_size); 122 /* The hardware has hung, nothing we can do about it here. */ 123 if (unlikely(cmd == NULL)) { 124 DRM_ERROR("Fifo reserve failed.\n"); 125 return -ENOMEM; 126 } 127 128 memset(cmd, 0, fifo_size); 129 cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN; 130 cmd->obj.structSize = sizeof(SVGAScreenObject); 131 cmd->obj.id = sou->base.unit; 132 cmd->obj.flags = SVGA_SCREEN_HAS_ROOT | 133 (sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0); 134 cmd->obj.size.width = mode->hdisplay; 135 cmd->obj.size.height = mode->vdisplay; 136 if (sou->base.is_implicit) { 137 cmd->obj.root.x = x; 138 cmd->obj.root.y = y; 139 } else { 140 cmd->obj.root.x = sou->base.gui_x; 141 cmd->obj.root.y = sou->base.gui_y; 142 } 143 144 /* Ok to assume that buffer is pinned in vram */ 145 vmw_bo_get_guest_ptr(&sou->buffer->base, &cmd->obj.backingStore.ptr); 146 cmd->obj.backingStore.pitch = mode->hdisplay * 4; 147 148 vmw_fifo_commit(dev_priv, fifo_size); 149 150 sou->defined = true; 151 152 return 0; 153 } 154 155 /** 156 * Send the fifo command to destroy a screen. 157 */ 158 static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv, 159 struct vmw_screen_object_unit *sou) 160 { 161 size_t fifo_size; 162 int ret; 163 164 struct { 165 struct { 166 uint32_t cmdType; 167 } header; 168 SVGAFifoCmdDestroyScreen body; 169 } *cmd; 170 171 /* no need to do anything */ 172 if (unlikely(!sou->defined)) 173 return 0; 174 175 fifo_size = sizeof(*cmd); 176 cmd = vmw_fifo_reserve(dev_priv, fifo_size); 177 /* the hardware has hung, nothing we can do about it here */ 178 if (unlikely(cmd == NULL)) { 179 DRM_ERROR("Fifo reserve failed.\n"); 180 return -ENOMEM; 181 } 182 183 memset(cmd, 0, fifo_size); 184 cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN; 185 cmd->body.screenId = sou->base.unit; 186 187 vmw_fifo_commit(dev_priv, fifo_size); 188 189 /* Force sync */ 190 ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ); 191 if (unlikely(ret != 0)) 192 DRM_ERROR("Failed to sync with HW"); 193 else 194 sou->defined = false; 195 196 return ret; 197 } 198 199 /** 200 * Free the backing store. 201 */ 202 static void vmw_sou_backing_free(struct vmw_private *dev_priv, 203 struct vmw_screen_object_unit *sou) 204 { 205 struct ttm_buffer_object *bo; 206 207 if (unlikely(sou->buffer == NULL)) 208 return; 209 210 bo = &sou->buffer->base; 211 ttm_bo_unref(&bo); 212 sou->buffer = NULL; 213 sou->buffer_size = 0; 214 } 215 216 /** 217 * Allocate the backing store for the buffer. 218 */ 219 static int vmw_sou_backing_alloc(struct vmw_private *dev_priv, 220 struct vmw_screen_object_unit *sou, 221 unsigned long size) 222 { 223 int ret; 224 225 if (sou->buffer_size == size) 226 return 0; 227 228 if (sou->buffer) 229 vmw_sou_backing_free(dev_priv, sou); 230 231 sou->buffer = kzalloc(sizeof(*sou->buffer), GFP_KERNEL); 232 if (unlikely(sou->buffer == NULL)) 233 return -ENOMEM; 234 235 /* After we have alloced the backing store might not be able to 236 * resume the overlays, this is preferred to failing to alloc. 237 */ 238 vmw_overlay_pause_all(dev_priv); 239 ret = vmw_dmabuf_init(dev_priv, sou->buffer, size, 240 &vmw_vram_ne_placement, 241 false, &vmw_dmabuf_bo_free); 242 vmw_overlay_resume_all(dev_priv); 243 244 if (unlikely(ret != 0)) 245 sou->buffer = NULL; /* vmw_dmabuf_init frees on error */ 246 else 247 sou->buffer_size = size; 248 249 return ret; 250 } 251 252 static int vmw_sou_crtc_set_config(struct drm_mode_set *set) 253 { 254 struct vmw_private *dev_priv; 255 struct vmw_screen_object_unit *sou; 256 struct drm_connector *connector; 257 struct drm_display_mode *mode; 258 struct drm_encoder *encoder; 259 struct vmw_framebuffer *vfb; 260 struct drm_framebuffer *fb; 261 struct drm_crtc *crtc; 262 int ret = 0; 263 264 if (!set) 265 return -EINVAL; 266 267 if (!set->crtc) 268 return -EINVAL; 269 270 /* get the sou */ 271 crtc = set->crtc; 272 sou = vmw_crtc_to_sou(crtc); 273 vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL; 274 dev_priv = vmw_priv(crtc->dev); 275 276 if (set->num_connectors > 1) { 277 DRM_ERROR("to many connectors\n"); 278 return -EINVAL; 279 } 280 281 if (set->num_connectors == 1 && 282 set->connectors[0] != &sou->base.connector) { 283 DRM_ERROR("connector doesn't match %p %p\n", 284 set->connectors[0], &sou->base.connector); 285 return -EINVAL; 286 } 287 288 /* sou only supports one fb active at the time */ 289 if (sou->base.is_implicit && 290 dev_priv->sou_priv->implicit_fb && vfb && 291 !(dev_priv->sou_priv->num_implicit == 1 && 292 sou->active_implicit) && 293 dev_priv->sou_priv->implicit_fb != vfb) { 294 DRM_ERROR("Multiple framebuffers not supported\n"); 295 return -EINVAL; 296 } 297 298 /* since they always map one to one these are safe */ 299 connector = &sou->base.connector; 300 encoder = &sou->base.encoder; 301 302 /* should we turn the crtc off */ 303 if (set->num_connectors == 0 || !set->mode || !set->fb) { 304 ret = vmw_sou_fifo_destroy(dev_priv, sou); 305 /* the hardware has hung don't do anything more */ 306 if (unlikely(ret != 0)) 307 return ret; 308 309 connector->encoder = NULL; 310 encoder->crtc = NULL; 311 crtc->primary->fb = NULL; 312 crtc->x = 0; 313 crtc->y = 0; 314 crtc->enabled = false; 315 316 vmw_sou_del_active(dev_priv, sou); 317 318 vmw_sou_backing_free(dev_priv, sou); 319 320 return 0; 321 } 322 323 324 /* we now know we want to set a mode */ 325 mode = set->mode; 326 fb = set->fb; 327 328 if (set->x + mode->hdisplay > fb->width || 329 set->y + mode->vdisplay > fb->height) { 330 DRM_ERROR("set outside of framebuffer\n"); 331 return -EINVAL; 332 } 333 334 vmw_fb_off(dev_priv); 335 336 if (mode->hdisplay != crtc->mode.hdisplay || 337 mode->vdisplay != crtc->mode.vdisplay) { 338 /* no need to check if depth is different, because backing 339 * store depth is forced to 4 by the device. 340 */ 341 342 ret = vmw_sou_fifo_destroy(dev_priv, sou); 343 /* the hardware has hung don't do anything more */ 344 if (unlikely(ret != 0)) 345 return ret; 346 347 vmw_sou_backing_free(dev_priv, sou); 348 } 349 350 if (!sou->buffer) { 351 /* forced to depth 4 by the device */ 352 size_t size = mode->hdisplay * mode->vdisplay * 4; 353 ret = vmw_sou_backing_alloc(dev_priv, sou, size); 354 if (unlikely(ret != 0)) 355 return ret; 356 } 357 358 ret = vmw_sou_fifo_create(dev_priv, sou, set->x, set->y, mode); 359 if (unlikely(ret != 0)) { 360 /* 361 * We are in a bit of a situation here, the hardware has 362 * hung and we may or may not have a buffer hanging of 363 * the screen object, best thing to do is not do anything 364 * if we where defined, if not just turn the crtc of. 365 * Not what userspace wants but it needs to htfu. 366 */ 367 if (sou->defined) 368 return ret; 369 370 connector->encoder = NULL; 371 encoder->crtc = NULL; 372 crtc->primary->fb = NULL; 373 crtc->x = 0; 374 crtc->y = 0; 375 crtc->enabled = false; 376 377 return ret; 378 } 379 380 vmw_sou_add_active(dev_priv, sou, vfb); 381 382 connector->encoder = encoder; 383 encoder->crtc = crtc; 384 crtc->mode = *mode; 385 crtc->primary->fb = fb; 386 crtc->x = set->x; 387 crtc->y = set->y; 388 crtc->enabled = true; 389 390 return 0; 391 } 392 393 static struct drm_crtc_funcs vmw_screen_object_crtc_funcs = { 394 .save = vmw_du_crtc_save, 395 .restore = vmw_du_crtc_restore, 396 .cursor_set = vmw_du_crtc_cursor_set, 397 .cursor_move = vmw_du_crtc_cursor_move, 398 .gamma_set = vmw_du_crtc_gamma_set, 399 .destroy = vmw_sou_crtc_destroy, 400 .set_config = vmw_sou_crtc_set_config, 401 .page_flip = vmw_du_page_flip, 402 }; 403 404 /* 405 * Screen Object Display Unit encoder functions 406 */ 407 408 static void vmw_sou_encoder_destroy(struct drm_encoder *encoder) 409 { 410 vmw_sou_destroy(vmw_encoder_to_sou(encoder)); 411 } 412 413 static struct drm_encoder_funcs vmw_screen_object_encoder_funcs = { 414 .destroy = vmw_sou_encoder_destroy, 415 }; 416 417 /* 418 * Screen Object Display Unit connector functions 419 */ 420 421 static void vmw_sou_connector_destroy(struct drm_connector *connector) 422 { 423 vmw_sou_destroy(vmw_connector_to_sou(connector)); 424 } 425 426 static struct drm_connector_funcs vmw_legacy_connector_funcs = { 427 .dpms = vmw_du_connector_dpms, 428 .save = vmw_du_connector_save, 429 .restore = vmw_du_connector_restore, 430 .detect = vmw_du_connector_detect, 431 .fill_modes = vmw_du_connector_fill_modes, 432 .set_property = vmw_du_connector_set_property, 433 .destroy = vmw_sou_connector_destroy, 434 }; 435 436 static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit) 437 { 438 struct vmw_screen_object_unit *sou; 439 struct drm_device *dev = dev_priv->dev; 440 struct drm_connector *connector; 441 struct drm_encoder *encoder; 442 struct drm_crtc *crtc; 443 444 sou = kzalloc(sizeof(*sou), GFP_KERNEL); 445 if (!sou) 446 return -ENOMEM; 447 448 sou->base.unit = unit; 449 crtc = &sou->base.crtc; 450 encoder = &sou->base.encoder; 451 connector = &sou->base.connector; 452 453 sou->active_implicit = false; 454 455 sou->base.pref_active = (unit == 0); 456 sou->base.pref_width = dev_priv->initial_width; 457 sou->base.pref_height = dev_priv->initial_height; 458 sou->base.pref_mode = NULL; 459 sou->base.is_implicit = true; 460 461 drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, 462 DRM_MODE_CONNECTOR_VIRTUAL); 463 connector->status = vmw_du_connector_detect(connector, true); 464 465 drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs, 466 DRM_MODE_ENCODER_VIRTUAL); 467 drm_mode_connector_attach_encoder(connector, encoder); 468 encoder->possible_crtcs = (1 << unit); 469 encoder->possible_clones = 0; 470 471 (void) drm_connector_register(connector); 472 473 drm_crtc_init(dev, crtc, &vmw_screen_object_crtc_funcs); 474 475 drm_mode_crtc_set_gamma_size(crtc, 256); 476 477 drm_object_attach_property(&connector->base, 478 dev->mode_config.dirty_info_property, 479 1); 480 481 return 0; 482 } 483 484 int vmw_kms_init_screen_object_display(struct vmw_private *dev_priv) 485 { 486 struct drm_device *dev = dev_priv->dev; 487 int i, ret; 488 489 if (dev_priv->sou_priv) { 490 DRM_INFO("sou system already on\n"); 491 return -EINVAL; 492 } 493 494 if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) { 495 DRM_INFO("Not using screen objects," 496 " missing cap SCREEN_OBJECT_2\n"); 497 return -ENOSYS; 498 } 499 500 ret = -ENOMEM; 501 dev_priv->sou_priv = kmalloc(sizeof(*dev_priv->sou_priv), GFP_KERNEL); 502 if (unlikely(!dev_priv->sou_priv)) 503 goto err_no_mem; 504 505 dev_priv->sou_priv->num_implicit = 0; 506 dev_priv->sou_priv->implicit_fb = NULL; 507 508 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); 509 if (unlikely(ret != 0)) 510 goto err_free; 511 512 ret = drm_mode_create_dirty_info_property(dev); 513 if (unlikely(ret != 0)) 514 goto err_vblank_cleanup; 515 516 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) 517 vmw_sou_init(dev_priv, i); 518 519 DRM_INFO("Screen objects system initialized\n"); 520 521 return 0; 522 523 err_vblank_cleanup: 524 drm_vblank_cleanup(dev); 525 err_free: 526 kfree(dev_priv->sou_priv); 527 dev_priv->sou_priv = NULL; 528 err_no_mem: 529 return ret; 530 } 531 532 int vmw_kms_close_screen_object_display(struct vmw_private *dev_priv) 533 { 534 struct drm_device *dev = dev_priv->dev; 535 536 if (!dev_priv->sou_priv) 537 return -ENOSYS; 538 539 drm_vblank_cleanup(dev); 540 541 kfree(dev_priv->sou_priv); 542 543 return 0; 544 } 545 546 /** 547 * Returns if this unit can be page flipped. 548 * Must be called with the mode_config mutex held. 549 */ 550 bool vmw_kms_screen_object_flippable(struct vmw_private *dev_priv, 551 struct drm_crtc *crtc) 552 { 553 struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc); 554 555 if (!sou->base.is_implicit) 556 return true; 557 558 if (dev_priv->sou_priv->num_implicit != 1) 559 return false; 560 561 return true; 562 } 563 564 /** 565 * Update the implicit fb to the current fb of this crtc. 566 * Must be called with the mode_config mutex held. 567 */ 568 void vmw_kms_screen_object_update_implicit_fb(struct vmw_private *dev_priv, 569 struct drm_crtc *crtc) 570 { 571 struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc); 572 573 BUG_ON(!sou->base.is_implicit); 574 575 dev_priv->sou_priv->implicit_fb = 576 vmw_framebuffer_to_vfb(sou->base.crtc.primary->fb); 577 } 578