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 30 31 #define vmw_crtc_to_sou(x) \ 32 container_of(x, struct vmw_screen_object_unit, base.crtc) 33 #define vmw_encoder_to_sou(x) \ 34 container_of(x, struct vmw_screen_object_unit, base.encoder) 35 #define vmw_connector_to_sou(x) \ 36 container_of(x, struct vmw_screen_object_unit, base.connector) 37 38 struct vmw_screen_object_display { 39 unsigned num_implicit; 40 41 struct vmw_framebuffer *implicit_fb; 42 }; 43 44 /** 45 * Display unit using screen objects. 46 */ 47 struct vmw_screen_object_unit { 48 struct vmw_display_unit base; 49 50 unsigned long buffer_size; /**< Size of allocated buffer */ 51 struct vmw_dma_buffer *buffer; /**< Backing store buffer */ 52 53 bool defined; 54 bool active_implicit; 55 }; 56 57 static void vmw_sou_destroy(struct vmw_screen_object_unit *sou) 58 { 59 vmw_display_unit_cleanup(&sou->base); 60 kfree(sou); 61 } 62 63 64 /* 65 * Screen Object Display Unit CRTC functions 66 */ 67 68 static void vmw_sou_crtc_destroy(struct drm_crtc *crtc) 69 { 70 vmw_sou_destroy(vmw_crtc_to_sou(crtc)); 71 } 72 73 static void vmw_sou_del_active(struct vmw_private *vmw_priv, 74 struct vmw_screen_object_unit *sou) 75 { 76 struct vmw_screen_object_display *ld = vmw_priv->sou_priv; 77 78 if (sou->active_implicit) { 79 if (--(ld->num_implicit) == 0) 80 ld->implicit_fb = NULL; 81 sou->active_implicit = false; 82 } 83 } 84 85 static void vmw_sou_add_active(struct vmw_private *vmw_priv, 86 struct vmw_screen_object_unit *sou, 87 struct vmw_framebuffer *vfb) 88 { 89 struct vmw_screen_object_display *ld = vmw_priv->sou_priv; 90 91 BUG_ON(!ld->num_implicit && ld->implicit_fb); 92 93 if (!sou->active_implicit && sou->base.is_implicit) { 94 ld->implicit_fb = vfb; 95 sou->active_implicit = true; 96 ld->num_implicit++; 97 } 98 } 99 100 /** 101 * Send the fifo command to create a screen. 102 */ 103 static int vmw_sou_fifo_create(struct vmw_private *dev_priv, 104 struct vmw_screen_object_unit *sou, 105 uint32_t x, uint32_t y, 106 struct drm_display_mode *mode) 107 { 108 size_t fifo_size; 109 110 struct { 111 struct { 112 uint32_t cmdType; 113 } header; 114 SVGAScreenObject obj; 115 } *cmd; 116 117 BUG_ON(!sou->buffer); 118 119 fifo_size = sizeof(*cmd); 120 cmd = vmw_fifo_reserve(dev_priv, fifo_size); 121 /* The hardware has hung, nothing we can do about it here. */ 122 if (unlikely(cmd == NULL)) { 123 DRM_ERROR("Fifo reserve failed.\n"); 124 return -ENOMEM; 125 } 126 127 memset(cmd, 0, fifo_size); 128 cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN; 129 cmd->obj.structSize = sizeof(SVGAScreenObject); 130 cmd->obj.id = sou->base.unit; 131 cmd->obj.flags = SVGA_SCREEN_HAS_ROOT | 132 (sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0); 133 cmd->obj.size.width = mode->hdisplay; 134 cmd->obj.size.height = mode->vdisplay; 135 if (sou->base.is_implicit) { 136 cmd->obj.root.x = x; 137 cmd->obj.root.y = y; 138 } else { 139 cmd->obj.root.x = sou->base.gui_x; 140 cmd->obj.root.y = sou->base.gui_y; 141 } 142 143 /* Ok to assume that buffer is pinned in vram */ 144 vmw_bo_get_guest_ptr(&sou->buffer->base, &cmd->obj.backingStore.ptr); 145 cmd->obj.backingStore.pitch = mode->hdisplay * 4; 146 147 vmw_fifo_commit(dev_priv, fifo_size); 148 149 sou->defined = true; 150 151 return 0; 152 } 153 154 /** 155 * Send the fifo command to destroy a screen. 156 */ 157 static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv, 158 struct vmw_screen_object_unit *sou) 159 { 160 size_t fifo_size; 161 int ret; 162 163 struct { 164 struct { 165 uint32_t cmdType; 166 } header; 167 SVGAFifoCmdDestroyScreen body; 168 } *cmd; 169 170 /* no need to do anything */ 171 if (unlikely(!sou->defined)) 172 return 0; 173 174 fifo_size = sizeof(*cmd); 175 cmd = vmw_fifo_reserve(dev_priv, fifo_size); 176 /* the hardware has hung, nothing we can do about it here */ 177 if (unlikely(cmd == NULL)) { 178 DRM_ERROR("Fifo reserve failed.\n"); 179 return -ENOMEM; 180 } 181 182 memset(cmd, 0, fifo_size); 183 cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN; 184 cmd->body.screenId = sou->base.unit; 185 186 vmw_fifo_commit(dev_priv, fifo_size); 187 188 /* Force sync */ 189 ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ); 190 if (unlikely(ret != 0)) 191 DRM_ERROR("Failed to sync with HW"); 192 else 193 sou->defined = false; 194 195 return ret; 196 } 197 198 /** 199 * Free the backing store. 200 */ 201 static void vmw_sou_backing_free(struct vmw_private *dev_priv, 202 struct vmw_screen_object_unit *sou) 203 { 204 struct ttm_buffer_object *bo; 205 206 if (unlikely(sou->buffer == NULL)) 207 return; 208 209 bo = &sou->buffer->base; 210 ttm_bo_unref(&bo); 211 sou->buffer = NULL; 212 sou->buffer_size = 0; 213 } 214 215 /** 216 * Allocate the backing store for the buffer. 217 */ 218 static int vmw_sou_backing_alloc(struct vmw_private *dev_priv, 219 struct vmw_screen_object_unit *sou, 220 unsigned long size) 221 { 222 int ret; 223 224 if (sou->buffer_size == size) 225 return 0; 226 227 if (sou->buffer) 228 vmw_sou_backing_free(dev_priv, sou); 229 230 sou->buffer = kzalloc(sizeof(*sou->buffer), GFP_KERNEL); 231 if (unlikely(sou->buffer == NULL)) 232 return -ENOMEM; 233 234 /* After we have alloced the backing store might not be able to 235 * resume the overlays, this is preferred to failing to alloc. 236 */ 237 vmw_overlay_pause_all(dev_priv); 238 ret = vmw_dmabuf_init(dev_priv, sou->buffer, size, 239 &vmw_vram_ne_placement, 240 false, &vmw_dmabuf_bo_free); 241 vmw_overlay_resume_all(dev_priv); 242 243 if (unlikely(ret != 0)) 244 sou->buffer = NULL; /* vmw_dmabuf_init frees on error */ 245 else 246 sou->buffer_size = size; 247 248 return ret; 249 } 250 251 static int vmw_sou_crtc_set_config(struct drm_mode_set *set) 252 { 253 struct vmw_private *dev_priv; 254 struct vmw_screen_object_unit *sou; 255 struct drm_connector *connector; 256 struct drm_display_mode *mode; 257 struct drm_encoder *encoder; 258 struct vmw_framebuffer *vfb; 259 struct drm_framebuffer *fb; 260 struct drm_crtc *crtc; 261 int ret = 0; 262 263 if (!set) 264 return -EINVAL; 265 266 if (!set->crtc) 267 return -EINVAL; 268 269 /* get the sou */ 270 crtc = set->crtc; 271 sou = vmw_crtc_to_sou(crtc); 272 vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL; 273 dev_priv = vmw_priv(crtc->dev); 274 275 if (set->num_connectors > 1) { 276 DRM_ERROR("to many connectors\n"); 277 return -EINVAL; 278 } 279 280 if (set->num_connectors == 1 && 281 set->connectors[0] != &sou->base.connector) { 282 DRM_ERROR("connector doesn't match %p %p\n", 283 set->connectors[0], &sou->base.connector); 284 return -EINVAL; 285 } 286 287 /* sou only supports one fb active at the time */ 288 if (sou->base.is_implicit && 289 dev_priv->sou_priv->implicit_fb && vfb && 290 !(dev_priv->sou_priv->num_implicit == 1 && 291 sou->active_implicit) && 292 dev_priv->sou_priv->implicit_fb != vfb) { 293 DRM_ERROR("Multiple framebuffers not supported\n"); 294 return -EINVAL; 295 } 296 297 /* since they always map one to one these are safe */ 298 connector = &sou->base.connector; 299 encoder = &sou->base.encoder; 300 301 /* should we turn the crtc off */ 302 if (set->num_connectors == 0 || !set->mode || !set->fb) { 303 ret = vmw_sou_fifo_destroy(dev_priv, sou); 304 /* the hardware has hung don't do anything more */ 305 if (unlikely(ret != 0)) 306 return ret; 307 308 connector->encoder = NULL; 309 encoder->crtc = NULL; 310 crtc->fb = NULL; 311 crtc->x = 0; 312 crtc->y = 0; 313 crtc->enabled = false; 314 315 vmw_sou_del_active(dev_priv, sou); 316 317 vmw_sou_backing_free(dev_priv, sou); 318 319 return 0; 320 } 321 322 323 /* we now know we want to set a mode */ 324 mode = set->mode; 325 fb = set->fb; 326 327 if (set->x + mode->hdisplay > fb->width || 328 set->y + mode->vdisplay > fb->height) { 329 DRM_ERROR("set outside of framebuffer\n"); 330 return -EINVAL; 331 } 332 333 vmw_fb_off(dev_priv); 334 335 if (mode->hdisplay != crtc->mode.hdisplay || 336 mode->vdisplay != crtc->mode.vdisplay) { 337 /* no need to check if depth is different, because backing 338 * store depth is forced to 4 by the device. 339 */ 340 341 ret = vmw_sou_fifo_destroy(dev_priv, sou); 342 /* the hardware has hung don't do anything more */ 343 if (unlikely(ret != 0)) 344 return ret; 345 346 vmw_sou_backing_free(dev_priv, sou); 347 } 348 349 if (!sou->buffer) { 350 /* forced to depth 4 by the device */ 351 size_t size = mode->hdisplay * mode->vdisplay * 4; 352 ret = vmw_sou_backing_alloc(dev_priv, sou, size); 353 if (unlikely(ret != 0)) 354 return ret; 355 } 356 357 ret = vmw_sou_fifo_create(dev_priv, sou, set->x, set->y, mode); 358 if (unlikely(ret != 0)) { 359 /* 360 * We are in a bit of a situation here, the hardware has 361 * hung and we may or may not have a buffer hanging of 362 * the screen object, best thing to do is not do anything 363 * if we where defined, if not just turn the crtc of. 364 * Not what userspace wants but it needs to htfu. 365 */ 366 if (sou->defined) 367 return ret; 368 369 connector->encoder = NULL; 370 encoder->crtc = NULL; 371 crtc->fb = NULL; 372 crtc->x = 0; 373 crtc->y = 0; 374 crtc->enabled = false; 375 376 return ret; 377 } 378 379 vmw_sou_add_active(dev_priv, sou, vfb); 380 381 connector->encoder = encoder; 382 encoder->crtc = crtc; 383 crtc->mode = *mode; 384 crtc->fb = fb; 385 crtc->x = set->x; 386 crtc->y = set->y; 387 crtc->enabled = true; 388 389 return 0; 390 } 391 392 static struct drm_crtc_funcs vmw_screen_object_crtc_funcs = { 393 .save = vmw_du_crtc_save, 394 .restore = vmw_du_crtc_restore, 395 .cursor_set = vmw_du_crtc_cursor_set, 396 .cursor_move = vmw_du_crtc_cursor_move, 397 .gamma_set = vmw_du_crtc_gamma_set, 398 .destroy = vmw_sou_crtc_destroy, 399 .set_config = vmw_sou_crtc_set_config, 400 .page_flip = vmw_du_page_flip, 401 }; 402 403 /* 404 * Screen Object Display Unit encoder functions 405 */ 406 407 static void vmw_sou_encoder_destroy(struct drm_encoder *encoder) 408 { 409 vmw_sou_destroy(vmw_encoder_to_sou(encoder)); 410 } 411 412 static struct drm_encoder_funcs vmw_screen_object_encoder_funcs = { 413 .destroy = vmw_sou_encoder_destroy, 414 }; 415 416 /* 417 * Screen Object Display Unit connector functions 418 */ 419 420 static void vmw_sou_connector_destroy(struct drm_connector *connector) 421 { 422 vmw_sou_destroy(vmw_connector_to_sou(connector)); 423 } 424 425 static struct drm_connector_funcs vmw_legacy_connector_funcs = { 426 .dpms = vmw_du_connector_dpms, 427 .save = vmw_du_connector_save, 428 .restore = vmw_du_connector_restore, 429 .detect = vmw_du_connector_detect, 430 .fill_modes = vmw_du_connector_fill_modes, 431 .set_property = vmw_du_connector_set_property, 432 .destroy = vmw_sou_connector_destroy, 433 }; 434 435 static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit) 436 { 437 struct vmw_screen_object_unit *sou; 438 struct drm_device *dev = dev_priv->dev; 439 struct drm_connector *connector; 440 struct drm_encoder *encoder; 441 struct drm_crtc *crtc; 442 443 sou = kzalloc(sizeof(*sou), GFP_KERNEL); 444 if (!sou) 445 return -ENOMEM; 446 447 sou->base.unit = unit; 448 crtc = &sou->base.crtc; 449 encoder = &sou->base.encoder; 450 connector = &sou->base.connector; 451 452 sou->active_implicit = false; 453 454 sou->base.pref_active = (unit == 0); 455 sou->base.pref_width = dev_priv->initial_width; 456 sou->base.pref_height = dev_priv->initial_height; 457 sou->base.pref_mode = NULL; 458 sou->base.is_implicit = true; 459 460 drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, 461 DRM_MODE_CONNECTOR_VIRTUAL); 462 connector->status = vmw_du_connector_detect(connector, true); 463 464 drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs, 465 DRM_MODE_ENCODER_VIRTUAL); 466 drm_mode_connector_attach_encoder(connector, encoder); 467 encoder->possible_crtcs = (1 << unit); 468 encoder->possible_clones = 0; 469 470 (void) drm_sysfs_connector_add(connector); 471 472 drm_crtc_init(dev, crtc, &vmw_screen_object_crtc_funcs); 473 474 drm_mode_crtc_set_gamma_size(crtc, 256); 475 476 drm_object_attach_property(&connector->base, 477 dev->mode_config.dirty_info_property, 478 1); 479 480 return 0; 481 } 482 483 int vmw_kms_init_screen_object_display(struct vmw_private *dev_priv) 484 { 485 struct drm_device *dev = dev_priv->dev; 486 int i, ret; 487 488 if (dev_priv->sou_priv) { 489 DRM_INFO("sou system already on\n"); 490 return -EINVAL; 491 } 492 493 if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) { 494 DRM_INFO("Not using screen objects," 495 " missing cap SCREEN_OBJECT_2\n"); 496 return -ENOSYS; 497 } 498 499 ret = -ENOMEM; 500 dev_priv->sou_priv = kmalloc(sizeof(*dev_priv->sou_priv), GFP_KERNEL); 501 if (unlikely(!dev_priv->sou_priv)) 502 goto err_no_mem; 503 504 dev_priv->sou_priv->num_implicit = 0; 505 dev_priv->sou_priv->implicit_fb = NULL; 506 507 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); 508 if (unlikely(ret != 0)) 509 goto err_free; 510 511 ret = drm_mode_create_dirty_info_property(dev); 512 if (unlikely(ret != 0)) 513 goto err_vblank_cleanup; 514 515 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) 516 vmw_sou_init(dev_priv, i); 517 518 DRM_INFO("Screen objects system initialized\n"); 519 520 return 0; 521 522 err_vblank_cleanup: 523 drm_vblank_cleanup(dev); 524 err_free: 525 kfree(dev_priv->sou_priv); 526 dev_priv->sou_priv = NULL; 527 err_no_mem: 528 return ret; 529 } 530 531 int vmw_kms_close_screen_object_display(struct vmw_private *dev_priv) 532 { 533 struct drm_device *dev = dev_priv->dev; 534 535 if (!dev_priv->sou_priv) 536 return -ENOSYS; 537 538 drm_vblank_cleanup(dev); 539 540 kfree(dev_priv->sou_priv); 541 542 return 0; 543 } 544 545 /** 546 * Returns if this unit can be page flipped. 547 * Must be called with the mode_config mutex held. 548 */ 549 bool vmw_kms_screen_object_flippable(struct vmw_private *dev_priv, 550 struct drm_crtc *crtc) 551 { 552 struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc); 553 554 if (!sou->base.is_implicit) 555 return true; 556 557 if (dev_priv->sou_priv->num_implicit != 1) 558 return false; 559 560 return true; 561 } 562 563 /** 564 * Update the implicit fb to the current fb of this crtc. 565 * Must be called with the mode_config mutex held. 566 */ 567 void vmw_kms_screen_object_update_implicit_fb(struct vmw_private *dev_priv, 568 struct drm_crtc *crtc) 569 { 570 struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc); 571 572 BUG_ON(!sou->base.is_implicit); 573 574 dev_priv->sou_priv->implicit_fb = 575 vmw_framebuffer_to_vfb(sou->base.crtc.fb); 576 } 577