1 /* 2 * Copyright (C) 2013 Red Hat 3 * Author: Rob Clark <robdclark@gmail.com> 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 as published by 7 * the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 * You should have received a copy of the GNU General Public License along with 15 * this program. If not, see <http://www.gnu.org/licenses/>. 16 */ 17 18 #include "msm_drv.h" 19 #include "msm_gpu.h" 20 #include "msm_kms.h" 21 22 static void msm_fb_output_poll_changed(struct drm_device *dev) 23 { 24 #ifdef CONFIG_DRM_MSM_FBDEV 25 struct msm_drm_private *priv = dev->dev_private; 26 if (priv->fbdev) 27 drm_fb_helper_hotplug_event(priv->fbdev); 28 #endif 29 } 30 31 static const struct drm_mode_config_funcs mode_config_funcs = { 32 .fb_create = msm_framebuffer_create, 33 .output_poll_changed = msm_fb_output_poll_changed, 34 .atomic_check = msm_atomic_check, 35 .atomic_commit = msm_atomic_commit, 36 }; 37 38 int msm_register_mmu(struct drm_device *dev, struct msm_mmu *mmu) 39 { 40 struct msm_drm_private *priv = dev->dev_private; 41 int idx = priv->num_mmus++; 42 43 if (WARN_ON(idx >= ARRAY_SIZE(priv->mmus))) 44 return -EINVAL; 45 46 priv->mmus[idx] = mmu; 47 48 return idx; 49 } 50 51 #ifdef CONFIG_DRM_MSM_REGISTER_LOGGING 52 static bool reglog = false; 53 MODULE_PARM_DESC(reglog, "Enable register read/write logging"); 54 module_param(reglog, bool, 0600); 55 #else 56 #define reglog 0 57 #endif 58 59 #ifdef CONFIG_DRM_MSM_FBDEV 60 static bool fbdev = true; 61 MODULE_PARM_DESC(fbdev, "Enable fbdev compat layer"); 62 module_param(fbdev, bool, 0600); 63 #endif 64 65 static char *vram = "16m"; 66 MODULE_PARM_DESC(vram, "Configure VRAM size (for devices without IOMMU/GPUMMU"); 67 module_param(vram, charp, 0); 68 69 /* 70 * Util/helpers: 71 */ 72 73 void __iomem *msm_ioremap(struct platform_device *pdev, const char *name, 74 const char *dbgname) 75 { 76 struct resource *res; 77 unsigned long size; 78 void __iomem *ptr; 79 80 if (name) 81 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name); 82 else 83 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 84 85 if (!res) { 86 dev_err(&pdev->dev, "failed to get memory resource: %s\n", name); 87 return ERR_PTR(-EINVAL); 88 } 89 90 size = resource_size(res); 91 92 ptr = devm_ioremap_nocache(&pdev->dev, res->start, size); 93 if (!ptr) { 94 dev_err(&pdev->dev, "failed to ioremap: %s\n", name); 95 return ERR_PTR(-ENOMEM); 96 } 97 98 if (reglog) 99 printk(KERN_DEBUG "IO:region %s %p %08lx\n", dbgname, ptr, size); 100 101 return ptr; 102 } 103 104 void msm_writel(u32 data, void __iomem *addr) 105 { 106 if (reglog) 107 printk(KERN_DEBUG "IO:W %p %08x\n", addr, data); 108 writel(data, addr); 109 } 110 111 u32 msm_readl(const void __iomem *addr) 112 { 113 u32 val = readl(addr); 114 if (reglog) 115 printk(KERN_ERR "IO:R %p %08x\n", addr, val); 116 return val; 117 } 118 119 /* 120 * DRM operations: 121 */ 122 123 static int msm_unload(struct drm_device *dev) 124 { 125 struct msm_drm_private *priv = dev->dev_private; 126 struct msm_kms *kms = priv->kms; 127 struct msm_gpu *gpu = priv->gpu; 128 129 drm_kms_helper_poll_fini(dev); 130 drm_mode_config_cleanup(dev); 131 drm_vblank_cleanup(dev); 132 133 pm_runtime_get_sync(dev->dev); 134 drm_irq_uninstall(dev); 135 pm_runtime_put_sync(dev->dev); 136 137 flush_workqueue(priv->wq); 138 destroy_workqueue(priv->wq); 139 140 if (kms) { 141 pm_runtime_disable(dev->dev); 142 kms->funcs->destroy(kms); 143 } 144 145 if (gpu) { 146 mutex_lock(&dev->struct_mutex); 147 gpu->funcs->pm_suspend(gpu); 148 mutex_unlock(&dev->struct_mutex); 149 gpu->funcs->destroy(gpu); 150 } 151 152 if (priv->vram.paddr) { 153 DEFINE_DMA_ATTRS(attrs); 154 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs); 155 drm_mm_takedown(&priv->vram.mm); 156 dma_free_attrs(dev->dev, priv->vram.size, NULL, 157 priv->vram.paddr, &attrs); 158 } 159 160 component_unbind_all(dev->dev, dev); 161 162 dev->dev_private = NULL; 163 164 kfree(priv); 165 166 return 0; 167 } 168 169 static int get_mdp_ver(struct platform_device *pdev) 170 { 171 #ifdef CONFIG_OF 172 static const struct of_device_id match_types[] = { { 173 .compatible = "qcom,mdss_mdp", 174 .data = (void *)5, 175 }, { 176 /* end node */ 177 } }; 178 struct device *dev = &pdev->dev; 179 const struct of_device_id *match; 180 match = of_match_node(match_types, dev->of_node); 181 if (match) 182 return (int)(unsigned long)match->data; 183 #endif 184 return 4; 185 } 186 187 #include <linux/of_address.h> 188 189 static int msm_init_vram(struct drm_device *dev) 190 { 191 struct msm_drm_private *priv = dev->dev_private; 192 unsigned long size = 0; 193 int ret = 0; 194 195 #ifdef CONFIG_OF 196 /* In the device-tree world, we could have a 'memory-region' 197 * phandle, which gives us a link to our "vram". Allocating 198 * is all nicely abstracted behind the dma api, but we need 199 * to know the entire size to allocate it all in one go. There 200 * are two cases: 201 * 1) device with no IOMMU, in which case we need exclusive 202 * access to a VRAM carveout big enough for all gpu 203 * buffers 204 * 2) device with IOMMU, but where the bootloader puts up 205 * a splash screen. In this case, the VRAM carveout 206 * need only be large enough for fbdev fb. But we need 207 * exclusive access to the buffer to avoid the kernel 208 * using those pages for other purposes (which appears 209 * as corruption on screen before we have a chance to 210 * load and do initial modeset) 211 */ 212 struct device_node *node; 213 214 node = of_parse_phandle(dev->dev->of_node, "memory-region", 0); 215 if (node) { 216 struct resource r; 217 ret = of_address_to_resource(node, 0, &r); 218 if (ret) 219 return ret; 220 size = r.end - r.start; 221 DRM_INFO("using VRAM carveout: %lx@%pa\n", size, &r.start); 222 } else 223 #endif 224 225 /* if we have no IOMMU, then we need to use carveout allocator. 226 * Grab the entire CMA chunk carved out in early startup in 227 * mach-msm: 228 */ 229 if (!iommu_present(&platform_bus_type)) { 230 DRM_INFO("using %s VRAM carveout\n", vram); 231 size = memparse(vram, NULL); 232 } 233 234 if (size) { 235 DEFINE_DMA_ATTRS(attrs); 236 void *p; 237 238 priv->vram.size = size; 239 240 drm_mm_init(&priv->vram.mm, 0, (size >> PAGE_SHIFT) - 1); 241 242 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs); 243 dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs); 244 245 /* note that for no-kernel-mapping, the vaddr returned 246 * is bogus, but non-null if allocation succeeded: 247 */ 248 p = dma_alloc_attrs(dev->dev, size, 249 &priv->vram.paddr, GFP_KERNEL, &attrs); 250 if (!p) { 251 dev_err(dev->dev, "failed to allocate VRAM\n"); 252 priv->vram.paddr = 0; 253 return -ENOMEM; 254 } 255 256 dev_info(dev->dev, "VRAM: %08x->%08x\n", 257 (uint32_t)priv->vram.paddr, 258 (uint32_t)(priv->vram.paddr + size)); 259 } 260 261 return ret; 262 } 263 264 static int msm_load(struct drm_device *dev, unsigned long flags) 265 { 266 struct platform_device *pdev = dev->platformdev; 267 struct msm_drm_private *priv; 268 struct msm_kms *kms; 269 int ret; 270 271 priv = kzalloc(sizeof(*priv), GFP_KERNEL); 272 if (!priv) { 273 dev_err(dev->dev, "failed to allocate private data\n"); 274 return -ENOMEM; 275 } 276 277 dev->dev_private = priv; 278 279 priv->wq = alloc_ordered_workqueue("msm", 0); 280 init_waitqueue_head(&priv->fence_event); 281 init_waitqueue_head(&priv->pending_crtcs_event); 282 283 INIT_LIST_HEAD(&priv->inactive_list); 284 INIT_LIST_HEAD(&priv->fence_cbs); 285 286 drm_mode_config_init(dev); 287 288 platform_set_drvdata(pdev, dev); 289 290 /* Bind all our sub-components: */ 291 ret = component_bind_all(dev->dev, dev); 292 if (ret) 293 return ret; 294 295 ret = msm_init_vram(dev); 296 if (ret) 297 goto fail; 298 299 switch (get_mdp_ver(pdev)) { 300 case 4: 301 kms = mdp4_kms_init(dev); 302 break; 303 case 5: 304 kms = mdp5_kms_init(dev); 305 break; 306 default: 307 kms = ERR_PTR(-ENODEV); 308 break; 309 } 310 311 if (IS_ERR(kms)) { 312 /* 313 * NOTE: once we have GPU support, having no kms should not 314 * be considered fatal.. ideally we would still support gpu 315 * and (for example) use dmabuf/prime to share buffers with 316 * imx drm driver on iMX5 317 */ 318 dev_err(dev->dev, "failed to load kms\n"); 319 ret = PTR_ERR(kms); 320 goto fail; 321 } 322 323 priv->kms = kms; 324 325 if (kms) { 326 pm_runtime_enable(dev->dev); 327 ret = kms->funcs->hw_init(kms); 328 if (ret) { 329 dev_err(dev->dev, "kms hw init failed: %d\n", ret); 330 goto fail; 331 } 332 } 333 334 dev->mode_config.min_width = 0; 335 dev->mode_config.min_height = 0; 336 dev->mode_config.max_width = 2048; 337 dev->mode_config.max_height = 2048; 338 dev->mode_config.funcs = &mode_config_funcs; 339 340 ret = drm_vblank_init(dev, priv->num_crtcs); 341 if (ret < 0) { 342 dev_err(dev->dev, "failed to initialize vblank\n"); 343 goto fail; 344 } 345 346 pm_runtime_get_sync(dev->dev); 347 ret = drm_irq_install(dev, platform_get_irq(dev->platformdev, 0)); 348 pm_runtime_put_sync(dev->dev); 349 if (ret < 0) { 350 dev_err(dev->dev, "failed to install IRQ handler\n"); 351 goto fail; 352 } 353 354 drm_mode_config_reset(dev); 355 356 #ifdef CONFIG_DRM_MSM_FBDEV 357 if (fbdev) 358 priv->fbdev = msm_fbdev_init(dev); 359 #endif 360 361 ret = msm_debugfs_late_init(dev); 362 if (ret) 363 goto fail; 364 365 drm_kms_helper_poll_init(dev); 366 367 return 0; 368 369 fail: 370 msm_unload(dev); 371 return ret; 372 } 373 374 static void load_gpu(struct drm_device *dev) 375 { 376 static DEFINE_MUTEX(init_lock); 377 struct msm_drm_private *priv = dev->dev_private; 378 379 mutex_lock(&init_lock); 380 381 if (!priv->gpu) 382 priv->gpu = adreno_load_gpu(dev); 383 384 mutex_unlock(&init_lock); 385 } 386 387 static int msm_open(struct drm_device *dev, struct drm_file *file) 388 { 389 struct msm_file_private *ctx; 390 391 /* For now, load gpu on open.. to avoid the requirement of having 392 * firmware in the initrd. 393 */ 394 load_gpu(dev); 395 396 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); 397 if (!ctx) 398 return -ENOMEM; 399 400 file->driver_priv = ctx; 401 402 return 0; 403 } 404 405 static void msm_preclose(struct drm_device *dev, struct drm_file *file) 406 { 407 struct msm_drm_private *priv = dev->dev_private; 408 struct msm_file_private *ctx = file->driver_priv; 409 struct msm_kms *kms = priv->kms; 410 411 if (kms) 412 kms->funcs->preclose(kms, file); 413 414 mutex_lock(&dev->struct_mutex); 415 if (ctx == priv->lastctx) 416 priv->lastctx = NULL; 417 mutex_unlock(&dev->struct_mutex); 418 419 kfree(ctx); 420 } 421 422 static void msm_lastclose(struct drm_device *dev) 423 { 424 #ifdef CONFIG_DRM_MSM_FBDEV 425 struct msm_drm_private *priv = dev->dev_private; 426 if (priv->fbdev) 427 drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev); 428 #endif 429 } 430 431 static irqreturn_t msm_irq(int irq, void *arg) 432 { 433 struct drm_device *dev = arg; 434 struct msm_drm_private *priv = dev->dev_private; 435 struct msm_kms *kms = priv->kms; 436 BUG_ON(!kms); 437 return kms->funcs->irq(kms); 438 } 439 440 static void msm_irq_preinstall(struct drm_device *dev) 441 { 442 struct msm_drm_private *priv = dev->dev_private; 443 struct msm_kms *kms = priv->kms; 444 BUG_ON(!kms); 445 kms->funcs->irq_preinstall(kms); 446 } 447 448 static int msm_irq_postinstall(struct drm_device *dev) 449 { 450 struct msm_drm_private *priv = dev->dev_private; 451 struct msm_kms *kms = priv->kms; 452 BUG_ON(!kms); 453 return kms->funcs->irq_postinstall(kms); 454 } 455 456 static void msm_irq_uninstall(struct drm_device *dev) 457 { 458 struct msm_drm_private *priv = dev->dev_private; 459 struct msm_kms *kms = priv->kms; 460 BUG_ON(!kms); 461 kms->funcs->irq_uninstall(kms); 462 } 463 464 static int msm_enable_vblank(struct drm_device *dev, int crtc_id) 465 { 466 struct msm_drm_private *priv = dev->dev_private; 467 struct msm_kms *kms = priv->kms; 468 if (!kms) 469 return -ENXIO; 470 DBG("dev=%p, crtc=%d", dev, crtc_id); 471 return kms->funcs->enable_vblank(kms, priv->crtcs[crtc_id]); 472 } 473 474 static void msm_disable_vblank(struct drm_device *dev, int crtc_id) 475 { 476 struct msm_drm_private *priv = dev->dev_private; 477 struct msm_kms *kms = priv->kms; 478 if (!kms) 479 return; 480 DBG("dev=%p, crtc=%d", dev, crtc_id); 481 kms->funcs->disable_vblank(kms, priv->crtcs[crtc_id]); 482 } 483 484 /* 485 * DRM debugfs: 486 */ 487 488 #ifdef CONFIG_DEBUG_FS 489 static int msm_gpu_show(struct drm_device *dev, struct seq_file *m) 490 { 491 struct msm_drm_private *priv = dev->dev_private; 492 struct msm_gpu *gpu = priv->gpu; 493 494 if (gpu) { 495 seq_printf(m, "%s Status:\n", gpu->name); 496 gpu->funcs->show(gpu, m); 497 } 498 499 return 0; 500 } 501 502 static int msm_gem_show(struct drm_device *dev, struct seq_file *m) 503 { 504 struct msm_drm_private *priv = dev->dev_private; 505 struct msm_gpu *gpu = priv->gpu; 506 507 if (gpu) { 508 seq_printf(m, "Active Objects (%s):\n", gpu->name); 509 msm_gem_describe_objects(&gpu->active_list, m); 510 } 511 512 seq_printf(m, "Inactive Objects:\n"); 513 msm_gem_describe_objects(&priv->inactive_list, m); 514 515 return 0; 516 } 517 518 static int msm_mm_show(struct drm_device *dev, struct seq_file *m) 519 { 520 return drm_mm_dump_table(m, &dev->vma_offset_manager->vm_addr_space_mm); 521 } 522 523 static int msm_fb_show(struct drm_device *dev, struct seq_file *m) 524 { 525 struct msm_drm_private *priv = dev->dev_private; 526 struct drm_framebuffer *fb, *fbdev_fb = NULL; 527 528 if (priv->fbdev) { 529 seq_printf(m, "fbcon "); 530 fbdev_fb = priv->fbdev->fb; 531 msm_framebuffer_describe(fbdev_fb, m); 532 } 533 534 mutex_lock(&dev->mode_config.fb_lock); 535 list_for_each_entry(fb, &dev->mode_config.fb_list, head) { 536 if (fb == fbdev_fb) 537 continue; 538 539 seq_printf(m, "user "); 540 msm_framebuffer_describe(fb, m); 541 } 542 mutex_unlock(&dev->mode_config.fb_lock); 543 544 return 0; 545 } 546 547 static int show_locked(struct seq_file *m, void *arg) 548 { 549 struct drm_info_node *node = (struct drm_info_node *) m->private; 550 struct drm_device *dev = node->minor->dev; 551 int (*show)(struct drm_device *dev, struct seq_file *m) = 552 node->info_ent->data; 553 int ret; 554 555 ret = mutex_lock_interruptible(&dev->struct_mutex); 556 if (ret) 557 return ret; 558 559 ret = show(dev, m); 560 561 mutex_unlock(&dev->struct_mutex); 562 563 return ret; 564 } 565 566 static struct drm_info_list msm_debugfs_list[] = { 567 {"gpu", show_locked, 0, msm_gpu_show}, 568 {"gem", show_locked, 0, msm_gem_show}, 569 { "mm", show_locked, 0, msm_mm_show }, 570 { "fb", show_locked, 0, msm_fb_show }, 571 }; 572 573 static int late_init_minor(struct drm_minor *minor) 574 { 575 int ret; 576 577 if (!minor) 578 return 0; 579 580 ret = msm_rd_debugfs_init(minor); 581 if (ret) { 582 dev_err(minor->dev->dev, "could not install rd debugfs\n"); 583 return ret; 584 } 585 586 ret = msm_perf_debugfs_init(minor); 587 if (ret) { 588 dev_err(minor->dev->dev, "could not install perf debugfs\n"); 589 return ret; 590 } 591 592 return 0; 593 } 594 595 int msm_debugfs_late_init(struct drm_device *dev) 596 { 597 int ret; 598 ret = late_init_minor(dev->primary); 599 if (ret) 600 return ret; 601 ret = late_init_minor(dev->render); 602 if (ret) 603 return ret; 604 ret = late_init_minor(dev->control); 605 return ret; 606 } 607 608 static int msm_debugfs_init(struct drm_minor *minor) 609 { 610 struct drm_device *dev = minor->dev; 611 int ret; 612 613 ret = drm_debugfs_create_files(msm_debugfs_list, 614 ARRAY_SIZE(msm_debugfs_list), 615 minor->debugfs_root, minor); 616 617 if (ret) { 618 dev_err(dev->dev, "could not install msm_debugfs_list\n"); 619 return ret; 620 } 621 622 return 0; 623 } 624 625 static void msm_debugfs_cleanup(struct drm_minor *minor) 626 { 627 drm_debugfs_remove_files(msm_debugfs_list, 628 ARRAY_SIZE(msm_debugfs_list), minor); 629 if (!minor->dev->dev_private) 630 return; 631 msm_rd_debugfs_cleanup(minor); 632 msm_perf_debugfs_cleanup(minor); 633 } 634 #endif 635 636 /* 637 * Fences: 638 */ 639 640 int msm_wait_fence_interruptable(struct drm_device *dev, uint32_t fence, 641 ktime_t *timeout) 642 { 643 struct msm_drm_private *priv = dev->dev_private; 644 int ret; 645 646 if (!priv->gpu) 647 return 0; 648 649 if (fence > priv->gpu->submitted_fence) { 650 DRM_ERROR("waiting on invalid fence: %u (of %u)\n", 651 fence, priv->gpu->submitted_fence); 652 return -EINVAL; 653 } 654 655 if (!timeout) { 656 /* no-wait: */ 657 ret = fence_completed(dev, fence) ? 0 : -EBUSY; 658 } else { 659 ktime_t now = ktime_get(); 660 unsigned long remaining_jiffies; 661 662 if (ktime_compare(*timeout, now) < 0) { 663 remaining_jiffies = 0; 664 } else { 665 ktime_t rem = ktime_sub(*timeout, now); 666 struct timespec ts = ktime_to_timespec(rem); 667 remaining_jiffies = timespec_to_jiffies(&ts); 668 } 669 670 ret = wait_event_interruptible_timeout(priv->fence_event, 671 fence_completed(dev, fence), 672 remaining_jiffies); 673 674 if (ret == 0) { 675 DBG("timeout waiting for fence: %u (completed: %u)", 676 fence, priv->completed_fence); 677 ret = -ETIMEDOUT; 678 } else if (ret != -ERESTARTSYS) { 679 ret = 0; 680 } 681 } 682 683 return ret; 684 } 685 686 int msm_queue_fence_cb(struct drm_device *dev, 687 struct msm_fence_cb *cb, uint32_t fence) 688 { 689 struct msm_drm_private *priv = dev->dev_private; 690 int ret = 0; 691 692 mutex_lock(&dev->struct_mutex); 693 if (!list_empty(&cb->work.entry)) { 694 ret = -EINVAL; 695 } else if (fence > priv->completed_fence) { 696 cb->fence = fence; 697 list_add_tail(&cb->work.entry, &priv->fence_cbs); 698 } else { 699 queue_work(priv->wq, &cb->work); 700 } 701 mutex_unlock(&dev->struct_mutex); 702 703 return ret; 704 } 705 706 /* called from workqueue */ 707 void msm_update_fence(struct drm_device *dev, uint32_t fence) 708 { 709 struct msm_drm_private *priv = dev->dev_private; 710 711 mutex_lock(&dev->struct_mutex); 712 priv->completed_fence = max(fence, priv->completed_fence); 713 714 while (!list_empty(&priv->fence_cbs)) { 715 struct msm_fence_cb *cb; 716 717 cb = list_first_entry(&priv->fence_cbs, 718 struct msm_fence_cb, work.entry); 719 720 if (cb->fence > priv->completed_fence) 721 break; 722 723 list_del_init(&cb->work.entry); 724 queue_work(priv->wq, &cb->work); 725 } 726 727 mutex_unlock(&dev->struct_mutex); 728 729 wake_up_all(&priv->fence_event); 730 } 731 732 void __msm_fence_worker(struct work_struct *work) 733 { 734 struct msm_fence_cb *cb = container_of(work, struct msm_fence_cb, work); 735 cb->func(cb); 736 } 737 738 /* 739 * DRM ioctls: 740 */ 741 742 static int msm_ioctl_get_param(struct drm_device *dev, void *data, 743 struct drm_file *file) 744 { 745 struct msm_drm_private *priv = dev->dev_private; 746 struct drm_msm_param *args = data; 747 struct msm_gpu *gpu; 748 749 /* for now, we just have 3d pipe.. eventually this would need to 750 * be more clever to dispatch to appropriate gpu module: 751 */ 752 if (args->pipe != MSM_PIPE_3D0) 753 return -EINVAL; 754 755 gpu = priv->gpu; 756 757 if (!gpu) 758 return -ENXIO; 759 760 return gpu->funcs->get_param(gpu, args->param, &args->value); 761 } 762 763 static int msm_ioctl_gem_new(struct drm_device *dev, void *data, 764 struct drm_file *file) 765 { 766 struct drm_msm_gem_new *args = data; 767 768 if (args->flags & ~MSM_BO_FLAGS) { 769 DRM_ERROR("invalid flags: %08x\n", args->flags); 770 return -EINVAL; 771 } 772 773 return msm_gem_new_handle(dev, file, args->size, 774 args->flags, &args->handle); 775 } 776 777 static inline ktime_t to_ktime(struct drm_msm_timespec timeout) 778 { 779 return ktime_set(timeout.tv_sec, timeout.tv_nsec); 780 } 781 782 static int msm_ioctl_gem_cpu_prep(struct drm_device *dev, void *data, 783 struct drm_file *file) 784 { 785 struct drm_msm_gem_cpu_prep *args = data; 786 struct drm_gem_object *obj; 787 ktime_t timeout = to_ktime(args->timeout); 788 int ret; 789 790 if (args->op & ~MSM_PREP_FLAGS) { 791 DRM_ERROR("invalid op: %08x\n", args->op); 792 return -EINVAL; 793 } 794 795 obj = drm_gem_object_lookup(dev, file, args->handle); 796 if (!obj) 797 return -ENOENT; 798 799 ret = msm_gem_cpu_prep(obj, args->op, &timeout); 800 801 drm_gem_object_unreference_unlocked(obj); 802 803 return ret; 804 } 805 806 static int msm_ioctl_gem_cpu_fini(struct drm_device *dev, void *data, 807 struct drm_file *file) 808 { 809 struct drm_msm_gem_cpu_fini *args = data; 810 struct drm_gem_object *obj; 811 int ret; 812 813 obj = drm_gem_object_lookup(dev, file, args->handle); 814 if (!obj) 815 return -ENOENT; 816 817 ret = msm_gem_cpu_fini(obj); 818 819 drm_gem_object_unreference_unlocked(obj); 820 821 return ret; 822 } 823 824 static int msm_ioctl_gem_info(struct drm_device *dev, void *data, 825 struct drm_file *file) 826 { 827 struct drm_msm_gem_info *args = data; 828 struct drm_gem_object *obj; 829 int ret = 0; 830 831 if (args->pad) 832 return -EINVAL; 833 834 obj = drm_gem_object_lookup(dev, file, args->handle); 835 if (!obj) 836 return -ENOENT; 837 838 args->offset = msm_gem_mmap_offset(obj); 839 840 drm_gem_object_unreference_unlocked(obj); 841 842 return ret; 843 } 844 845 static int msm_ioctl_wait_fence(struct drm_device *dev, void *data, 846 struct drm_file *file) 847 { 848 struct drm_msm_wait_fence *args = data; 849 ktime_t timeout = to_ktime(args->timeout); 850 851 if (args->pad) { 852 DRM_ERROR("invalid pad: %08x\n", args->pad); 853 return -EINVAL; 854 } 855 856 return msm_wait_fence_interruptable(dev, args->fence, &timeout); 857 } 858 859 static const struct drm_ioctl_desc msm_ioctls[] = { 860 DRM_IOCTL_DEF_DRV(MSM_GET_PARAM, msm_ioctl_get_param, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW), 861 DRM_IOCTL_DEF_DRV(MSM_GEM_NEW, msm_ioctl_gem_new, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW), 862 DRM_IOCTL_DEF_DRV(MSM_GEM_INFO, msm_ioctl_gem_info, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW), 863 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_PREP, msm_ioctl_gem_cpu_prep, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW), 864 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_FINI, msm_ioctl_gem_cpu_fini, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW), 865 DRM_IOCTL_DEF_DRV(MSM_GEM_SUBMIT, msm_ioctl_gem_submit, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW), 866 DRM_IOCTL_DEF_DRV(MSM_WAIT_FENCE, msm_ioctl_wait_fence, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW), 867 }; 868 869 static const struct vm_operations_struct vm_ops = { 870 .fault = msm_gem_fault, 871 .open = drm_gem_vm_open, 872 .close = drm_gem_vm_close, 873 }; 874 875 static const struct file_operations fops = { 876 .owner = THIS_MODULE, 877 .open = drm_open, 878 .release = drm_release, 879 .unlocked_ioctl = drm_ioctl, 880 #ifdef CONFIG_COMPAT 881 .compat_ioctl = drm_compat_ioctl, 882 #endif 883 .poll = drm_poll, 884 .read = drm_read, 885 .llseek = no_llseek, 886 .mmap = msm_gem_mmap, 887 }; 888 889 static struct drm_driver msm_driver = { 890 .driver_features = DRIVER_HAVE_IRQ | 891 DRIVER_GEM | 892 DRIVER_PRIME | 893 DRIVER_RENDER | 894 DRIVER_ATOMIC | 895 DRIVER_MODESET, 896 .load = msm_load, 897 .unload = msm_unload, 898 .open = msm_open, 899 .preclose = msm_preclose, 900 .lastclose = msm_lastclose, 901 .set_busid = drm_platform_set_busid, 902 .irq_handler = msm_irq, 903 .irq_preinstall = msm_irq_preinstall, 904 .irq_postinstall = msm_irq_postinstall, 905 .irq_uninstall = msm_irq_uninstall, 906 .get_vblank_counter = drm_vblank_count, 907 .enable_vblank = msm_enable_vblank, 908 .disable_vblank = msm_disable_vblank, 909 .gem_free_object = msm_gem_free_object, 910 .gem_vm_ops = &vm_ops, 911 .dumb_create = msm_gem_dumb_create, 912 .dumb_map_offset = msm_gem_dumb_map_offset, 913 .dumb_destroy = drm_gem_dumb_destroy, 914 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 915 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 916 .gem_prime_export = drm_gem_prime_export, 917 .gem_prime_import = drm_gem_prime_import, 918 .gem_prime_pin = msm_gem_prime_pin, 919 .gem_prime_unpin = msm_gem_prime_unpin, 920 .gem_prime_get_sg_table = msm_gem_prime_get_sg_table, 921 .gem_prime_import_sg_table = msm_gem_prime_import_sg_table, 922 .gem_prime_vmap = msm_gem_prime_vmap, 923 .gem_prime_vunmap = msm_gem_prime_vunmap, 924 .gem_prime_mmap = msm_gem_prime_mmap, 925 #ifdef CONFIG_DEBUG_FS 926 .debugfs_init = msm_debugfs_init, 927 .debugfs_cleanup = msm_debugfs_cleanup, 928 #endif 929 .ioctls = msm_ioctls, 930 .num_ioctls = DRM_MSM_NUM_IOCTLS, 931 .fops = &fops, 932 .name = "msm", 933 .desc = "MSM Snapdragon DRM", 934 .date = "20130625", 935 .major = 1, 936 .minor = 0, 937 }; 938 939 #ifdef CONFIG_PM_SLEEP 940 static int msm_pm_suspend(struct device *dev) 941 { 942 struct drm_device *ddev = dev_get_drvdata(dev); 943 944 drm_kms_helper_poll_disable(ddev); 945 946 return 0; 947 } 948 949 static int msm_pm_resume(struct device *dev) 950 { 951 struct drm_device *ddev = dev_get_drvdata(dev); 952 953 drm_kms_helper_poll_enable(ddev); 954 955 return 0; 956 } 957 #endif 958 959 static const struct dev_pm_ops msm_pm_ops = { 960 SET_SYSTEM_SLEEP_PM_OPS(msm_pm_suspend, msm_pm_resume) 961 }; 962 963 /* 964 * Componentized driver support: 965 */ 966 967 #ifdef CONFIG_OF 968 /* NOTE: the CONFIG_OF case duplicates the same code as exynos or imx 969 * (or probably any other).. so probably some room for some helpers 970 */ 971 static int compare_of(struct device *dev, void *data) 972 { 973 return dev->of_node == data; 974 } 975 976 static int add_components(struct device *dev, struct component_match **matchptr, 977 const char *name) 978 { 979 struct device_node *np = dev->of_node; 980 unsigned i; 981 982 for (i = 0; ; i++) { 983 struct device_node *node; 984 985 node = of_parse_phandle(np, name, i); 986 if (!node) 987 break; 988 989 component_match_add(dev, matchptr, compare_of, node); 990 } 991 992 return 0; 993 } 994 #else 995 static int compare_dev(struct device *dev, void *data) 996 { 997 return dev == data; 998 } 999 #endif 1000 1001 static int msm_drm_bind(struct device *dev) 1002 { 1003 return drm_platform_init(&msm_driver, to_platform_device(dev)); 1004 } 1005 1006 static void msm_drm_unbind(struct device *dev) 1007 { 1008 drm_put_dev(platform_get_drvdata(to_platform_device(dev))); 1009 } 1010 1011 static const struct component_master_ops msm_drm_ops = { 1012 .bind = msm_drm_bind, 1013 .unbind = msm_drm_unbind, 1014 }; 1015 1016 /* 1017 * Platform driver: 1018 */ 1019 1020 static int msm_pdev_probe(struct platform_device *pdev) 1021 { 1022 struct component_match *match = NULL; 1023 #ifdef CONFIG_OF 1024 add_components(&pdev->dev, &match, "connectors"); 1025 add_components(&pdev->dev, &match, "gpus"); 1026 #else 1027 /* For non-DT case, it kinda sucks. We don't actually have a way 1028 * to know whether or not we are waiting for certain devices (or if 1029 * they are simply not present). But for non-DT we only need to 1030 * care about apq8064/apq8060/etc (all mdp4/a3xx): 1031 */ 1032 static const char *devnames[] = { 1033 "hdmi_msm.0", "kgsl-3d0.0", 1034 }; 1035 int i; 1036 1037 DBG("Adding components.."); 1038 1039 for (i = 0; i < ARRAY_SIZE(devnames); i++) { 1040 struct device *dev; 1041 1042 dev = bus_find_device_by_name(&platform_bus_type, 1043 NULL, devnames[i]); 1044 if (!dev) { 1045 dev_info(&pdev->dev, "still waiting for %s\n", devnames[i]); 1046 return -EPROBE_DEFER; 1047 } 1048 1049 component_match_add(&pdev->dev, &match, compare_dev, dev); 1050 } 1051 #endif 1052 1053 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); 1054 return component_master_add_with_match(&pdev->dev, &msm_drm_ops, match); 1055 } 1056 1057 static int msm_pdev_remove(struct platform_device *pdev) 1058 { 1059 component_master_del(&pdev->dev, &msm_drm_ops); 1060 1061 return 0; 1062 } 1063 1064 static const struct platform_device_id msm_id[] = { 1065 { "mdp", 0 }, 1066 { } 1067 }; 1068 1069 static const struct of_device_id dt_match[] = { 1070 { .compatible = "qcom,mdp" }, /* mdp4 */ 1071 { .compatible = "qcom,mdss_mdp" }, /* mdp5 */ 1072 {} 1073 }; 1074 MODULE_DEVICE_TABLE(of, dt_match); 1075 1076 static struct platform_driver msm_platform_driver = { 1077 .probe = msm_pdev_probe, 1078 .remove = msm_pdev_remove, 1079 .driver = { 1080 .name = "msm", 1081 .of_match_table = dt_match, 1082 .pm = &msm_pm_ops, 1083 }, 1084 .id_table = msm_id, 1085 }; 1086 1087 static int __init msm_drm_register(void) 1088 { 1089 DBG("init"); 1090 msm_dsi_register(); 1091 msm_edp_register(); 1092 hdmi_register(); 1093 adreno_register(); 1094 return platform_driver_register(&msm_platform_driver); 1095 } 1096 1097 static void __exit msm_drm_unregister(void) 1098 { 1099 DBG("fini"); 1100 platform_driver_unregister(&msm_platform_driver); 1101 hdmi_unregister(); 1102 adreno_unregister(); 1103 msm_edp_unregister(); 1104 msm_dsi_unregister(); 1105 } 1106 1107 module_init(msm_drm_register); 1108 module_exit(msm_drm_unregister); 1109 1110 MODULE_AUTHOR("Rob Clark <robdclark@gmail.com"); 1111 MODULE_DESCRIPTION("MSM DRM Driver"); 1112 MODULE_LICENSE("GPL"); 1113