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