drivers/gpu/drm/msm/msm_drv.c

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