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 };
  33
  34 int msm_register_mmu(struct drm_device *dev, struct msm_mmu *mmu)
  35 {
  36         struct msm_drm_private *priv = dev->dev_private;
  37         int idx = priv->num_mmus++;
  38
  39         if (WARN_ON(idx >= ARRAY_SIZE(priv->mmus)))
  40                 return -EINVAL;
  41
  42         priv->mmus[idx] = mmu;
  43
  44         return idx;
  45 }
  46
  47 #ifdef CONFIG_DRM_MSM_REGISTER_LOGGING
  48 static bool reglog = false;
  49 MODULE_PARM_DESC(reglog, "Enable register read/write logging");
  50 module_param(reglog, bool, 0600);
  51 #else
  52 #define reglog 0
  53 #endif
  54
  55 static char *vram;
  56 MODULE_PARM_DESC(vram, "Configure VRAM size (for devices without IOMMU/GPUMMU");
  57 module_param(vram, charp, 0);
  58
  59 /*
  60  * Util/helpers:
  61  */
  62
  63 void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
  64                 const char *dbgname)
  65 {
  66         struct resource *res;
  67         unsigned long size;
  68         void __iomem *ptr;
  69
  70         if (name)
  71                 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
  72         else
  73                 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  74
  75         if (!res) {
  76                 dev_err(&pdev->dev, "failed to get memory resource: %s\n", name);
  77                 return ERR_PTR(-EINVAL);
  78         }
  79
  80         size = resource_size(res);
  81
  82         ptr = devm_ioremap_nocache(&pdev->dev, res->start, size);
  83         if (!ptr) {
  84                 dev_err(&pdev->dev, "failed to ioremap: %s\n", name);
  85                 return ERR_PTR(-ENOMEM);
  86         }
  87
  88         if (reglog)
  89                 printk(KERN_DEBUG "IO:region %s %08x %08lx\n", dbgname, (u32)ptr, size);
  90
  91         return ptr;
  92 }
  93
  94 void msm_writel(u32 data, void __iomem *addr)
  95 {
  96         if (reglog)
  97                 printk(KERN_DEBUG "IO:W %08x %08x\n", (u32)addr, data);
  98         writel(data, addr);
  99 }
 100
 101 u32 msm_readl(const void __iomem *addr)
 102 {
 103         u32 val = readl(addr);
 104         if (reglog)
 105                 printk(KERN_ERR "IO:R %08x %08x\n", (u32)addr, val);
 106         return val;
 107 }
 108
 109 /*
 110  * DRM operations:
 111  */
 112
 113 static int msm_unload(struct drm_device *dev)
 114 {
 115         struct msm_drm_private *priv = dev->dev_private;
 116         struct msm_kms *kms = priv->kms;
 117         struct msm_gpu *gpu = priv->gpu;
 118
 119         drm_kms_helper_poll_fini(dev);
 120         drm_mode_config_cleanup(dev);
 121         drm_vblank_cleanup(dev);
 122
 123         pm_runtime_get_sync(dev->dev);
 124         drm_irq_uninstall(dev);
 125         pm_runtime_put_sync(dev->dev);
 126
 127         flush_workqueue(priv->wq);
 128         destroy_workqueue(priv->wq);
 129
 130         if (kms) {
 131                 pm_runtime_disable(dev->dev);
 132                 kms->funcs->destroy(kms);
 133         }
 134
 135         if (gpu) {
 136                 mutex_lock(&dev->struct_mutex);
 137                 gpu->funcs->pm_suspend(gpu);
 138                 gpu->funcs->destroy(gpu);
 139                 mutex_unlock(&dev->struct_mutex);
 140         }
 141
 142         if (priv->vram.paddr) {
 143                 DEFINE_DMA_ATTRS(attrs);
 144                 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
 145                 drm_mm_takedown(&priv->vram.mm);
 146                 dma_free_attrs(dev->dev, priv->vram.size, NULL,
 147                                 priv->vram.paddr, &attrs);
 148         }
 149
 150         component_unbind_all(dev->dev, dev);
 151
 152         dev->dev_private = NULL;
 153
 154         kfree(priv);
 155
 156         return 0;
 157 }
 158
 159 static int get_mdp_ver(struct platform_device *pdev)
 160 {
 161 #ifdef CONFIG_OF
 162         const static struct of_device_id match_types[] = { {
 163                 .compatible = "qcom,mdss_mdp",
 164                 .data   = (void *)5,
 165         }, {
 166                 /* end node */
 167         } };
 168         struct device *dev = &pdev->dev;
 169         const struct of_device_id *match;
 170         match = of_match_node(match_types, dev->of_node);
 171         if (match)
 172                 return (int)match->data;
 173 #endif
 174         return 4;
 175 }
 176
 177 static int msm_load(struct drm_device *dev, unsigned long flags)
 178 {
 179         struct platform_device *pdev = dev->platformdev;
 180         struct msm_drm_private *priv;
 181         struct msm_kms *kms;
 182         int ret;
 183
 184
 185         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 186         if (!priv) {
 187                 dev_err(dev->dev, "failed to allocate private data\n");
 188                 return -ENOMEM;
 189         }
 190
 191         dev->dev_private = priv;
 192
 193         priv->wq = alloc_ordered_workqueue("msm", 0);
 194         init_waitqueue_head(&priv->fence_event);
 195
 196         INIT_LIST_HEAD(&priv->inactive_list);
 197         INIT_LIST_HEAD(&priv->fence_cbs);
 198
 199         drm_mode_config_init(dev);
 200
 201         /* if we have no IOMMU, then we need to use carveout allocator.
 202          * Grab the entire CMA chunk carved out in early startup in
 203          * mach-msm:
 204          */
 205         if (!iommu_present(&platform_bus_type)) {
 206                 DEFINE_DMA_ATTRS(attrs);
 207                 unsigned long size;
 208                 void *p;
 209
 210                 DBG("using %s VRAM carveout", vram);
 211                 size = memparse(vram, NULL);
 212                 priv->vram.size = size;
 213
 214                 drm_mm_init(&priv->vram.mm, 0, (size >> PAGE_SHIFT) - 1);
 215
 216                 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
 217                 dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
 218
 219                 /* note that for no-kernel-mapping, the vaddr returned
 220                  * is bogus, but non-null if allocation succeeded:
 221                  */
 222                 p = dma_alloc_attrs(dev->dev, size,
 223                                 &priv->vram.paddr, GFP_KERNEL, &attrs);
 224                 if (!p) {
 225                         dev_err(dev->dev, "failed to allocate VRAM\n");
 226                         priv->vram.paddr = 0;
 227                         ret = -ENOMEM;
 228                         goto fail;
 229                 }
 230
 231                 dev_info(dev->dev, "VRAM: %08x->%08x\n",
 232                                 (uint32_t)priv->vram.paddr,
 233                                 (uint32_t)(priv->vram.paddr + size));
 234         }
 235
 236         platform_set_drvdata(pdev, dev);
 237
 238         /* Bind all our sub-components: */
 239         ret = component_bind_all(dev->dev, dev);
 240         if (ret)
 241                 return ret;
 242
 243         switch (get_mdp_ver(pdev)) {
 244         case 4:
 245                 kms = mdp4_kms_init(dev);
 246                 break;
 247         case 5:
 248                 kms = mdp5_kms_init(dev);
 249                 break;
 250         default:
 251                 kms = ERR_PTR(-ENODEV);
 252                 break;
 253         }
 254
 255         if (IS_ERR(kms)) {
 256                 /*
 257                  * NOTE: once we have GPU support, having no kms should not
 258                  * be considered fatal.. ideally we would still support gpu
 259                  * and (for example) use dmabuf/prime to share buffers with
 260                  * imx drm driver on iMX5
 261                  */
 262                 dev_err(dev->dev, "failed to load kms\n");
 263                 ret = PTR_ERR(kms);
 264                 goto fail;
 265         }
 266
 267         priv->kms = kms;
 268
 269         if (kms) {
 270                 pm_runtime_enable(dev->dev);
 271                 ret = kms->funcs->hw_init(kms);
 272                 if (ret) {
 273                         dev_err(dev->dev, "kms hw init failed: %d\n", ret);
 274                         goto fail;
 275                 }
 276         }
 277
 278         dev->mode_config.min_width = 0;
 279         dev->mode_config.min_height = 0;
 280         dev->mode_config.max_width = 2048;
 281         dev->mode_config.max_height = 2048;
 282         dev->mode_config.funcs = &mode_config_funcs;
 283
 284         ret = drm_vblank_init(dev, 1);
 285         if (ret < 0) {
 286                 dev_err(dev->dev, "failed to initialize vblank\n");
 287                 goto fail;
 288         }
 289
 290         pm_runtime_get_sync(dev->dev);
 291         ret = drm_irq_install(dev, platform_get_irq(dev->platformdev, 0));
 292         pm_runtime_put_sync(dev->dev);
 293         if (ret < 0) {
 294                 dev_err(dev->dev, "failed to install IRQ handler\n");
 295                 goto fail;
 296         }
 297
 298 #ifdef CONFIG_DRM_MSM_FBDEV
 299         priv->fbdev = msm_fbdev_init(dev);
 300 #endif
 301
 302         ret = msm_debugfs_late_init(dev);
 303         if (ret)
 304                 goto fail;
 305
 306         drm_kms_helper_poll_init(dev);
 307
 308         return 0;
 309
 310 fail:
 311         msm_unload(dev);
 312         return ret;
 313 }
 314
 315 static void load_gpu(struct drm_device *dev)
 316 {
 317         struct msm_drm_private *priv = dev->dev_private;
 318         struct msm_gpu *gpu;
 319
 320         if (priv->gpu)
 321                 return;
 322
 323         mutex_lock(&dev->struct_mutex);
 324         gpu = a3xx_gpu_init(dev);
 325         if (IS_ERR(gpu)) {
 326                 dev_warn(dev->dev, "failed to load a3xx gpu\n");
 327                 gpu = NULL;
 328                 /* not fatal */
 329         }
 330
 331         if (gpu) {
 332                 int ret;
 333                 gpu->funcs->pm_resume(gpu);
 334                 ret = gpu->funcs->hw_init(gpu);
 335                 if (ret) {
 336                         dev_err(dev->dev, "gpu hw init failed: %d\n", ret);
 337                         gpu->funcs->destroy(gpu);
 338                         gpu = NULL;
 339                 } else {
 340                         /* give inactive pm a chance to kick in: */
 341                         msm_gpu_retire(gpu);
 342                 }
 343
 344         }
 345
 346         priv->gpu = gpu;
 347
 348         mutex_unlock(&dev->struct_mutex);
 349 }
 350
 351 static int msm_open(struct drm_device *dev, struct drm_file *file)
 352 {
 353         struct msm_file_private *ctx;
 354
 355         /* For now, load gpu on open.. to avoid the requirement of having
 356          * firmware in the initrd.
 357          */
 358         load_gpu(dev);
 359
 360         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 361         if (!ctx)
 362                 return -ENOMEM;
 363
 364         file->driver_priv = ctx;
 365
 366         return 0;
 367 }
 368
 369 static void msm_preclose(struct drm_device *dev, struct drm_file *file)
 370 {
 371         struct msm_drm_private *priv = dev->dev_private;
 372         struct msm_file_private *ctx = file->driver_priv;
 373         struct msm_kms *kms = priv->kms;
 374
 375         if (kms)
 376                 kms->funcs->preclose(kms, file);
 377
 378         mutex_lock(&dev->struct_mutex);
 379         if (ctx == priv->lastctx)
 380                 priv->lastctx = NULL;
 381         mutex_unlock(&dev->struct_mutex);
 382
 383         kfree(ctx);
 384 }
 385
 386 static void msm_lastclose(struct drm_device *dev)
 387 {
 388         struct msm_drm_private *priv = dev->dev_private;
 389         if (priv->fbdev)
 390                 drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev);
 391 }
 392
 393 static irqreturn_t msm_irq(int irq, void *arg)
 394 {
 395         struct drm_device *dev = arg;
 396         struct msm_drm_private *priv = dev->dev_private;
 397         struct msm_kms *kms = priv->kms;
 398         BUG_ON(!kms);
 399         return kms->funcs->irq(kms);
 400 }
 401
 402 static void msm_irq_preinstall(struct drm_device *dev)
 403 {
 404         struct msm_drm_private *priv = dev->dev_private;
 405         struct msm_kms *kms = priv->kms;
 406         BUG_ON(!kms);
 407         kms->funcs->irq_preinstall(kms);
 408 }
 409
 410 static int msm_irq_postinstall(struct drm_device *dev)
 411 {
 412         struct msm_drm_private *priv = dev->dev_private;
 413         struct msm_kms *kms = priv->kms;
 414         BUG_ON(!kms);
 415         return kms->funcs->irq_postinstall(kms);
 416 }
 417
 418 static void msm_irq_uninstall(struct drm_device *dev)
 419 {
 420         struct msm_drm_private *priv = dev->dev_private;
 421         struct msm_kms *kms = priv->kms;
 422         BUG_ON(!kms);
 423         kms->funcs->irq_uninstall(kms);
 424 }
 425
 426 static int msm_enable_vblank(struct drm_device *dev, int crtc_id)
 427 {
 428         struct msm_drm_private *priv = dev->dev_private;
 429         struct msm_kms *kms = priv->kms;
 430         if (!kms)
 431                 return -ENXIO;
 432         DBG("dev=%p, crtc=%d", dev, crtc_id);
 433         return kms->funcs->enable_vblank(kms, priv->crtcs[crtc_id]);
 434 }
 435
 436 static void msm_disable_vblank(struct drm_device *dev, int crtc_id)
 437 {
 438         struct msm_drm_private *priv = dev->dev_private;
 439         struct msm_kms *kms = priv->kms;
 440         if (!kms)
 441                 return;
 442         DBG("dev=%p, crtc=%d", dev, crtc_id);
 443         kms->funcs->disable_vblank(kms, priv->crtcs[crtc_id]);
 444 }
 445
 446 /*
 447  * DRM debugfs:
 448  */
 449
 450 #ifdef CONFIG_DEBUG_FS
 451 static int msm_gpu_show(struct drm_device *dev, struct seq_file *m)
 452 {
 453         struct msm_drm_private *priv = dev->dev_private;
 454         struct msm_gpu *gpu = priv->gpu;
 455
 456         if (gpu) {
 457                 seq_printf(m, "%s Status:\n", gpu->name);
 458                 gpu->funcs->show(gpu, m);
 459         }
 460
 461         return 0;
 462 }
 463
 464 static int msm_gem_show(struct drm_device *dev, struct seq_file *m)
 465 {
 466         struct msm_drm_private *priv = dev->dev_private;
 467         struct msm_gpu *gpu = priv->gpu;
 468
 469         if (gpu) {
 470                 seq_printf(m, "Active Objects (%s):\n", gpu->name);
 471                 msm_gem_describe_objects(&gpu->active_list, m);
 472         }
 473
 474         seq_printf(m, "Inactive Objects:\n");
 475         msm_gem_describe_objects(&priv->inactive_list, m);
 476
 477         return 0;
 478 }
 479
 480 static int msm_mm_show(struct drm_device *dev, struct seq_file *m)
 481 {
 482         return drm_mm_dump_table(m, &dev->vma_offset_manager->vm_addr_space_mm);
 483 }
 484
 485 static int msm_fb_show(struct drm_device *dev, struct seq_file *m)
 486 {
 487         struct msm_drm_private *priv = dev->dev_private;
 488         struct drm_framebuffer *fb, *fbdev_fb = NULL;
 489
 490         if (priv->fbdev) {
 491                 seq_printf(m, "fbcon ");
 492                 fbdev_fb = priv->fbdev->fb;
 493                 msm_framebuffer_describe(fbdev_fb, m);
 494         }
 495
 496         mutex_lock(&dev->mode_config.fb_lock);
 497         list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
 498                 if (fb == fbdev_fb)
 499                         continue;
 500
 501                 seq_printf(m, "user ");
 502                 msm_framebuffer_describe(fb, m);
 503         }
 504         mutex_unlock(&dev->mode_config.fb_lock);
 505
 506         return 0;
 507 }
 508
 509 static int show_locked(struct seq_file *m, void *arg)
 510 {
 511         struct drm_info_node *node = (struct drm_info_node *) m->private;
 512         struct drm_device *dev = node->minor->dev;
 513         int (*show)(struct drm_device *dev, struct seq_file *m) =
 514                         node->info_ent->data;
 515         int ret;
 516
 517         ret = mutex_lock_interruptible(&dev->struct_mutex);
 518         if (ret)
 519                 return ret;
 520
 521         ret = show(dev, m);
 522
 523         mutex_unlock(&dev->struct_mutex);
 524
 525         return ret;
 526 }
 527
 528 static struct drm_info_list msm_debugfs_list[] = {
 529                 {"gpu", show_locked, 0, msm_gpu_show},
 530                 {"gem", show_locked, 0, msm_gem_show},
 531                 { "mm", show_locked, 0, msm_mm_show },
 532                 { "fb", show_locked, 0, msm_fb_show },
 533 };
 534
 535 static int late_init_minor(struct drm_minor *minor)
 536 {
 537         int ret;
 538
 539         if (!minor)
 540                 return 0;
 541
 542         ret = msm_rd_debugfs_init(minor);
 543         if (ret) {
 544                 dev_err(minor->dev->dev, "could not install rd debugfs\n");
 545                 return ret;
 546         }
 547
 548         ret = msm_perf_debugfs_init(minor);
 549         if (ret) {
 550                 dev_err(minor->dev->dev, "could not install perf debugfs\n");
 551                 return ret;
 552         }
 553
 554         return 0;
 555 }
 556
 557 int msm_debugfs_late_init(struct drm_device *dev)
 558 {
 559         int ret;
 560         ret = late_init_minor(dev->primary);
 561         if (ret)
 562                 return ret;
 563         ret = late_init_minor(dev->render);
 564         if (ret)
 565                 return ret;
 566         ret = late_init_minor(dev->control);
 567         return ret;
 568 }
 569
 570 static int msm_debugfs_init(struct drm_minor *minor)
 571 {
 572         struct drm_device *dev = minor->dev;
 573         int ret;
 574
 575         ret = drm_debugfs_create_files(msm_debugfs_list,
 576                         ARRAY_SIZE(msm_debugfs_list),
 577                         minor->debugfs_root, minor);
 578
 579         if (ret) {
 580                 dev_err(dev->dev, "could not install msm_debugfs_list\n");
 581                 return ret;
 582         }
 583
 584         return 0;
 585 }
 586
 587 static void msm_debugfs_cleanup(struct drm_minor *minor)
 588 {
 589         drm_debugfs_remove_files(msm_debugfs_list,
 590                         ARRAY_SIZE(msm_debugfs_list), minor);
 591         if (!minor->dev->dev_private)
 592                 return;
 593         msm_rd_debugfs_cleanup(minor);
 594         msm_perf_debugfs_cleanup(minor);
 595 }
 596 #endif
 597
 598 /*
 599  * Fences:
 600  */
 601
 602 int msm_wait_fence_interruptable(struct drm_device *dev, uint32_t fence,
 603                 struct timespec *timeout)
 604 {
 605         struct msm_drm_private *priv = dev->dev_private;
 606         int ret;
 607
 608         if (!priv->gpu)
 609                 return 0;
 610
 611         if (fence > priv->gpu->submitted_fence) {
 612                 DRM_ERROR("waiting on invalid fence: %u (of %u)\n",
 613                                 fence, priv->gpu->submitted_fence);
 614                 return -EINVAL;
 615         }
 616
 617         if (!timeout) {
 618                 /* no-wait: */
 619                 ret = fence_completed(dev, fence) ? 0 : -EBUSY;
 620         } else {
 621                 unsigned long timeout_jiffies = timespec_to_jiffies(timeout);
 622                 unsigned long start_jiffies = jiffies;
 623                 unsigned long remaining_jiffies;
 624
 625                 if (time_after(start_jiffies, timeout_jiffies))
 626                         remaining_jiffies = 0;
 627                 else
 628                         remaining_jiffies = timeout_jiffies - start_jiffies;
 629
 630                 ret = wait_event_interruptible_timeout(priv->fence_event,
 631                                 fence_completed(dev, fence),
 632                                 remaining_jiffies);
 633
 634                 if (ret == 0) {
 635                         DBG("timeout waiting for fence: %u (completed: %u)",
 636                                         fence, priv->completed_fence);
 637                         ret = -ETIMEDOUT;
 638                 } else if (ret != -ERESTARTSYS) {
 639                         ret = 0;
 640                 }
 641         }
 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         .irq_handler        = msm_irq,
 837         .irq_preinstall     = msm_irq_preinstall,
 838         .irq_postinstall    = msm_irq_postinstall,
 839         .irq_uninstall      = msm_irq_uninstall,
 840         .get_vblank_counter = drm_vblank_count,
 841         .enable_vblank      = msm_enable_vblank,
 842         .disable_vblank     = msm_disable_vblank,
 843         .gem_free_object    = msm_gem_free_object,
 844         .gem_vm_ops         = &vm_ops,
 845         .dumb_create        = msm_gem_dumb_create,
 846         .dumb_map_offset    = msm_gem_dumb_map_offset,
 847         .dumb_destroy       = drm_gem_dumb_destroy,
 848         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 849         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 850         .gem_prime_export   = drm_gem_prime_export,
 851         .gem_prime_import   = drm_gem_prime_import,
 852         .gem_prime_pin      = msm_gem_prime_pin,
 853         .gem_prime_unpin    = msm_gem_prime_unpin,
 854         .gem_prime_get_sg_table = msm_gem_prime_get_sg_table,
 855         .gem_prime_import_sg_table = msm_gem_prime_import_sg_table,
 856         .gem_prime_vmap     = msm_gem_prime_vmap,
 857         .gem_prime_vunmap   = msm_gem_prime_vunmap,
 858 #ifdef CONFIG_DEBUG_FS
 859         .debugfs_init       = msm_debugfs_init,
 860         .debugfs_cleanup    = msm_debugfs_cleanup,
 861 #endif
 862         .ioctls             = msm_ioctls,
 863         .num_ioctls         = DRM_MSM_NUM_IOCTLS,
 864         .fops               = &fops,
 865         .name               = "msm",
 866         .desc               = "MSM Snapdragon DRM",
 867         .date               = "20130625",
 868         .major              = 1,
 869         .minor              = 0,
 870 };
 871
 872 #ifdef CONFIG_PM_SLEEP
 873 static int msm_pm_suspend(struct device *dev)
 874 {
 875         struct drm_device *ddev = dev_get_drvdata(dev);
 876
 877         drm_kms_helper_poll_disable(ddev);
 878
 879         return 0;
 880 }
 881
 882 static int msm_pm_resume(struct device *dev)
 883 {
 884         struct drm_device *ddev = dev_get_drvdata(dev);
 885
 886         drm_kms_helper_poll_enable(ddev);
 887
 888         return 0;
 889 }
 890 #endif
 891
 892 static const struct dev_pm_ops msm_pm_ops = {
 893         SET_SYSTEM_SLEEP_PM_OPS(msm_pm_suspend, msm_pm_resume)
 894 };
 895
 896 /*
 897  * Componentized driver support:
 898  */
 899
 900 #ifdef CONFIG_OF
 901 /* NOTE: the CONFIG_OF case duplicates the same code as exynos or imx
 902  * (or probably any other).. so probably some room for some helpers
 903  */
 904 static int compare_of(struct device *dev, void *data)
 905 {
 906         return dev->of_node == data;
 907 }
 908
 909 static int msm_drm_add_components(struct device *master, struct master *m)
 910 {
 911         struct device_node *np = master->of_node;
 912         unsigned i;
 913         int ret;
 914
 915         for (i = 0; ; i++) {
 916                 struct device_node *node;
 917
 918                 node = of_parse_phandle(np, "connectors", i);
 919                 if (!node)
 920                         break;
 921
 922                 ret = component_master_add_child(m, compare_of, node);
 923                 of_node_put(node);
 924
 925                 if (ret)
 926                         return ret;
 927         }
 928         return 0;
 929 }
 930 #else
 931 static int compare_dev(struct device *dev, void *data)
 932 {
 933         return dev == data;
 934 }
 935
 936 static int msm_drm_add_components(struct device *master, struct master *m)
 937 {
 938         /* For non-DT case, it kinda sucks.  We don't actually have a way
 939          * to know whether or not we are waiting for certain devices (or if
 940          * they are simply not present).  But for non-DT we only need to
 941          * care about apq8064/apq8060/etc (all mdp4/a3xx):
 942          */
 943         static const char *devnames[] = {
 944                         "hdmi_msm.0", "kgsl-3d0.0",
 945         };
 946         int i;
 947
 948         DBG("Adding components..");
 949
 950         for (i = 0; i < ARRAY_SIZE(devnames); i++) {
 951                 struct device *dev;
 952                 int ret;
 953
 954                 dev = bus_find_device_by_name(&platform_bus_type,
 955                                 NULL, devnames[i]);
 956                 if (!dev) {
 957                         dev_info(master, "still waiting for %s\n", devnames[i]);
 958                         return -EPROBE_DEFER;
 959                 }
 960
 961                 ret = component_master_add_child(m, compare_dev, dev);
 962                 if (ret) {
 963                         DBG("could not add child: %d", ret);
 964                         return ret;
 965                 }
 966         }
 967
 968         return 0;
 969 }
 970 #endif
 971
 972 static int msm_drm_bind(struct device *dev)
 973 {
 974         return drm_platform_init(&msm_driver, to_platform_device(dev));
 975 }
 976
 977 static void msm_drm_unbind(struct device *dev)
 978 {
 979         drm_put_dev(platform_get_drvdata(to_platform_device(dev)));
 980 }
 981
 982 static const struct component_master_ops msm_drm_ops = {
 983                 .add_components = msm_drm_add_components,
 984                 .bind = msm_drm_bind,
 985                 .unbind = msm_drm_unbind,
 986 };
 987
 988 /*
 989  * Platform driver:
 990  */
 991
 992 static int msm_pdev_probe(struct platform_device *pdev)
 993 {
 994         pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 995         return component_master_add(&pdev->dev, &msm_drm_ops);
 996 }
 997
 998 static int msm_pdev_remove(struct platform_device *pdev)
 999 {
1000         component_master_del(&pdev->dev, &msm_drm_ops);
1001
1002         return 0;
1003 }
1004
1005 static const struct platform_device_id msm_id[] = {
1006         { "mdp", 0 },
1007         { }
1008 };
1009
1010 static const struct of_device_id dt_match[] = {
1011         { .compatible = "qcom,mdss_mdp" },
1012         {}
1013 };
1014 MODULE_DEVICE_TABLE(of, dt_match);
1015
1016 static struct platform_driver msm_platform_driver = {
1017         .probe      = msm_pdev_probe,
1018         .remove     = msm_pdev_remove,
1019         .driver     = {
1020                 .owner  = THIS_MODULE,
1021                 .name   = "msm",
1022                 .of_match_table = dt_match,
1023                 .pm     = &msm_pm_ops,
1024         },
1025         .id_table   = msm_id,
1026 };
1027
1028 static int __init msm_drm_register(void)
1029 {
1030         DBG("init");
1031         hdmi_register();
1032         a3xx_register();
1033         return platform_driver_register(&msm_platform_driver);
1034 }
1035
1036 static void __exit msm_drm_unregister(void)
1037 {
1038         DBG("fini");
1039         platform_driver_unregister(&msm_platform_driver);
1040         hdmi_unregister();
1041         a3xx_unregister();
1042 }
1043
1044 module_init(msm_drm_register);
1045 module_exit(msm_drm_unregister);
1046
1047 MODULE_AUTHOR("Rob Clark <robdclark@gmail.com");
1048 MODULE_DESCRIPTION("MSM DRM Driver");
1049 MODULE_LICENSE("GPL");