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         static const 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         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 185         if (!priv) {
 186                 dev_err(dev->dev, "failed to allocate private data\n");
 187                 return -ENOMEM;
 188         }
 189
 190         dev->dev_private = priv;
 191
 192         priv->wq = alloc_ordered_workqueue("msm", 0);
 193         init_waitqueue_head(&priv->fence_event);
 194
 195         INIT_LIST_HEAD(&priv->inactive_list);
 196         INIT_LIST_HEAD(&priv->fence_cbs);
 197
 198         drm_mode_config_init(dev);
 199
 200         /* if we have no IOMMU, then we need to use carveout allocator.
 201          * Grab the entire CMA chunk carved out in early startup in
 202          * mach-msm:
 203          */
 204         if (!iommu_present(&platform_bus_type)) {
 205                 DEFINE_DMA_ATTRS(attrs);
 206                 unsigned long size;
 207                 void *p;
 208
 209                 DBG("using %s VRAM carveout", vram);
 210                 size = memparse(vram, NULL);
 211                 priv->vram.size = size;
 212
 213                 drm_mm_init(&priv->vram.mm, 0, (size >> PAGE_SHIFT) - 1);
 214
 215                 dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
 216                 dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
 217
 218                 /* note that for no-kernel-mapping, the vaddr returned
 219                  * is bogus, but non-null if allocation succeeded:
 220                  */
 221                 p = dma_alloc_attrs(dev->dev, size,
 222                                 &priv->vram.paddr, GFP_KERNEL, &attrs);
 223                 if (!p) {
 224                         dev_err(dev->dev, "failed to allocate VRAM\n");
 225                         priv->vram.paddr = 0;
 226                         ret = -ENOMEM;
 227                         goto fail;
 228                 }
 229
 230                 dev_info(dev->dev, "VRAM: %08x->%08x\n",
 231                                 (uint32_t)priv->vram.paddr,
 232                                 (uint32_t)(priv->vram.paddr + size));
 233         }
 234
 235         platform_set_drvdata(pdev, dev);
 236
 237         /* Bind all our sub-components: */
 238         ret = component_bind_all(dev->dev, dev);
 239         if (ret)
 240                 return ret;
 241
 242         switch (get_mdp_ver(pdev)) {
 243         case 4:
 244                 kms = mdp4_kms_init(dev);
 245                 break;
 246         case 5:
 247                 kms = mdp5_kms_init(dev);
 248                 break;
 249         default:
 250                 kms = ERR_PTR(-ENODEV);
 251                 break;
 252         }
 253
 254         if (IS_ERR(kms)) {
 255                 /*
 256                  * NOTE: once we have GPU support, having no kms should not
 257                  * be considered fatal.. ideally we would still support gpu
 258                  * and (for example) use dmabuf/prime to share buffers with
 259                  * imx drm driver on iMX5
 260                  */
 261                 dev_err(dev->dev, "failed to load kms\n");
 262                 ret = PTR_ERR(kms);
 263                 goto fail;
 264         }
 265
 266         priv->kms = kms;
 267
 268         if (kms) {
 269                 pm_runtime_enable(dev->dev);
 270                 ret = kms->funcs->hw_init(kms);
 271                 if (ret) {
 272                         dev_err(dev->dev, "kms hw init failed: %d\n", ret);
 273                         goto fail;
 274                 }
 275         }
 276
 277         dev->mode_config.min_width = 0;
 278         dev->mode_config.min_height = 0;
 279         dev->mode_config.max_width = 2048;
 280         dev->mode_config.max_height = 2048;
 281         dev->mode_config.funcs = &mode_config_funcs;
 282
 283         ret = drm_vblank_init(dev, 1);
 284         if (ret < 0) {
 285                 dev_err(dev->dev, "failed to initialize vblank\n");
 286                 goto fail;
 287         }
 288
 289         pm_runtime_get_sync(dev->dev);
 290         ret = drm_irq_install(dev, platform_get_irq(dev->platformdev, 0));
 291         pm_runtime_put_sync(dev->dev);
 292         if (ret < 0) {
 293                 dev_err(dev->dev, "failed to install IRQ handler\n");
 294                 goto fail;
 295         }
 296
 297 #ifdef CONFIG_DRM_MSM_FBDEV
 298         priv->fbdev = msm_fbdev_init(dev);
 299 #endif
 300
 301         ret = msm_debugfs_late_init(dev);
 302         if (ret)
 303                 goto fail;
 304
 305         drm_kms_helper_poll_init(dev);
 306
 307         return 0;
 308
 309 fail:
 310         msm_unload(dev);
 311         return ret;
 312 }
 313
 314 static void load_gpu(struct drm_device *dev)
 315 {
 316         static DEFINE_MUTEX(init_lock);
 317         struct msm_drm_private *priv = dev->dev_private;
 318         struct msm_gpu *gpu;
 319
 320         mutex_lock(&init_lock);
 321
 322         if (priv->gpu)
 323                 goto out;
 324
 325         gpu = a3xx_gpu_init(dev);
 326         if (IS_ERR(gpu)) {
 327                 dev_warn(dev->dev, "failed to load a3xx gpu\n");
 328                 gpu = NULL;
 329                 /* not fatal */
 330         }
 331
 332         if (gpu) {
 333                 int ret;
 334                 mutex_lock(&dev->struct_mutex);
 335                 gpu->funcs->pm_resume(gpu);
 336                 mutex_unlock(&dev->struct_mutex);
 337                 ret = gpu->funcs->hw_init(gpu);
 338                 if (ret) {
 339                         dev_err(dev->dev, "gpu hw init failed: %d\n", ret);
 340                         gpu->funcs->destroy(gpu);
 341                         gpu = NULL;
 342                 } else {
 343                         /* give inactive pm a chance to kick in: */
 344                         msm_gpu_retire(gpu);
 345                 }
 346         }
 347
 348         priv->gpu = gpu;
 349
 350 out:
 351         mutex_unlock(&init_lock);
 352 }
 353
 354 static int msm_open(struct drm_device *dev, struct drm_file *file)
 355 {
 356         struct msm_file_private *ctx;
 357
 358         /* For now, load gpu on open.. to avoid the requirement of having
 359          * firmware in the initrd.
 360          */
 361         load_gpu(dev);
 362
 363         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 364         if (!ctx)
 365                 return -ENOMEM;
 366
 367         file->driver_priv = ctx;
 368
 369         return 0;
 370 }
 371
 372 static void msm_preclose(struct drm_device *dev, struct drm_file *file)
 373 {
 374         struct msm_drm_private *priv = dev->dev_private;
 375         struct msm_file_private *ctx = file->driver_priv;
 376         struct msm_kms *kms = priv->kms;
 377
 378         if (kms)
 379                 kms->funcs->preclose(kms, file);
 380
 381         mutex_lock(&dev->struct_mutex);
 382         if (ctx == priv->lastctx)
 383                 priv->lastctx = NULL;
 384         mutex_unlock(&dev->struct_mutex);
 385
 386         kfree(ctx);
 387 }
 388
 389 static void msm_lastclose(struct drm_device *dev)
 390 {
 391         struct msm_drm_private *priv = dev->dev_private;
 392         if (priv->fbdev)
 393                 drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev);
 394 }
 395
 396 static irqreturn_t msm_irq(int irq, void *arg)
 397 {
 398         struct drm_device *dev = arg;
 399         struct msm_drm_private *priv = dev->dev_private;
 400         struct msm_kms *kms = priv->kms;
 401         BUG_ON(!kms);
 402         return kms->funcs->irq(kms);
 403 }
 404
 405 static void msm_irq_preinstall(struct drm_device *dev)
 406 {
 407         struct msm_drm_private *priv = dev->dev_private;
 408         struct msm_kms *kms = priv->kms;
 409         BUG_ON(!kms);
 410         kms->funcs->irq_preinstall(kms);
 411 }
 412
 413 static int msm_irq_postinstall(struct drm_device *dev)
 414 {
 415         struct msm_drm_private *priv = dev->dev_private;
 416         struct msm_kms *kms = priv->kms;
 417         BUG_ON(!kms);
 418         return kms->funcs->irq_postinstall(kms);
 419 }
 420
 421 static void msm_irq_uninstall(struct drm_device *dev)
 422 {
 423         struct msm_drm_private *priv = dev->dev_private;
 424         struct msm_kms *kms = priv->kms;
 425         BUG_ON(!kms);
 426         kms->funcs->irq_uninstall(kms);
 427 }
 428
 429 static int msm_enable_vblank(struct drm_device *dev, int crtc_id)
 430 {
 431         struct msm_drm_private *priv = dev->dev_private;
 432         struct msm_kms *kms = priv->kms;
 433         if (!kms)
 434                 return -ENXIO;
 435         DBG("dev=%p, crtc=%d", dev, crtc_id);
 436         return kms->funcs->enable_vblank(kms, priv->crtcs[crtc_id]);
 437 }
 438
 439 static void msm_disable_vblank(struct drm_device *dev, int crtc_id)
 440 {
 441         struct msm_drm_private *priv = dev->dev_private;
 442         struct msm_kms *kms = priv->kms;
 443         if (!kms)
 444                 return;
 445         DBG("dev=%p, crtc=%d", dev, crtc_id);
 446         kms->funcs->disable_vblank(kms, priv->crtcs[crtc_id]);
 447 }
 448
 449 /*
 450  * DRM debugfs:
 451  */
 452
 453 #ifdef CONFIG_DEBUG_FS
 454 static int msm_gpu_show(struct drm_device *dev, struct seq_file *m)
 455 {
 456         struct msm_drm_private *priv = dev->dev_private;
 457         struct msm_gpu *gpu = priv->gpu;
 458
 459         if (gpu) {
 460                 seq_printf(m, "%s Status:\n", gpu->name);
 461                 gpu->funcs->show(gpu, m);
 462         }
 463
 464         return 0;
 465 }
 466
 467 static int msm_gem_show(struct drm_device *dev, struct seq_file *m)
 468 {
 469         struct msm_drm_private *priv = dev->dev_private;
 470         struct msm_gpu *gpu = priv->gpu;
 471
 472         if (gpu) {
 473                 seq_printf(m, "Active Objects (%s):\n", gpu->name);
 474                 msm_gem_describe_objects(&gpu->active_list, m);
 475         }
 476
 477         seq_printf(m, "Inactive Objects:\n");
 478         msm_gem_describe_objects(&priv->inactive_list, m);
 479
 480         return 0;
 481 }
 482
 483 static int msm_mm_show(struct drm_device *dev, struct seq_file *m)
 484 {
 485         return drm_mm_dump_table(m, &dev->vma_offset_manager->vm_addr_space_mm);
 486 }
 487
 488 static int msm_fb_show(struct drm_device *dev, struct seq_file *m)
 489 {
 490         struct msm_drm_private *priv = dev->dev_private;
 491         struct drm_framebuffer *fb, *fbdev_fb = NULL;
 492
 493         if (priv->fbdev) {
 494                 seq_printf(m, "fbcon ");
 495                 fbdev_fb = priv->fbdev->fb;
 496                 msm_framebuffer_describe(fbdev_fb, m);
 497         }
 498
 499         mutex_lock(&dev->mode_config.fb_lock);
 500         list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
 501                 if (fb == fbdev_fb)
 502                         continue;
 503
 504                 seq_printf(m, "user ");
 505                 msm_framebuffer_describe(fb, m);
 506         }
 507         mutex_unlock(&dev->mode_config.fb_lock);
 508
 509         return 0;
 510 }
 511
 512 static int show_locked(struct seq_file *m, void *arg)
 513 {
 514         struct drm_info_node *node = (struct drm_info_node *) m->private;
 515         struct drm_device *dev = node->minor->dev;
 516         int (*show)(struct drm_device *dev, struct seq_file *m) =
 517                         node->info_ent->data;
 518         int ret;
 519
 520         ret = mutex_lock_interruptible(&dev->struct_mutex);
 521         if (ret)
 522                 return ret;
 523
 524         ret = show(dev, m);
 525
 526         mutex_unlock(&dev->struct_mutex);
 527
 528         return ret;
 529 }
 530
 531 static struct drm_info_list msm_debugfs_list[] = {
 532                 {"gpu", show_locked, 0, msm_gpu_show},
 533                 {"gem", show_locked, 0, msm_gem_show},
 534                 { "mm", show_locked, 0, msm_mm_show },
 535                 { "fb", show_locked, 0, msm_fb_show },
 536 };
 537
 538 static int late_init_minor(struct drm_minor *minor)
 539 {
 540         int ret;
 541
 542         if (!minor)
 543                 return 0;
 544
 545         ret = msm_rd_debugfs_init(minor);
 546         if (ret) {
 547                 dev_err(minor->dev->dev, "could not install rd debugfs\n");
 548                 return ret;
 549         }
 550
 551         ret = msm_perf_debugfs_init(minor);
 552         if (ret) {
 553                 dev_err(minor->dev->dev, "could not install perf debugfs\n");
 554                 return ret;
 555         }
 556
 557         return 0;
 558 }
 559
 560 int msm_debugfs_late_init(struct drm_device *dev)
 561 {
 562         int ret;
 563         ret = late_init_minor(dev->primary);
 564         if (ret)
 565                 return ret;
 566         ret = late_init_minor(dev->render);
 567         if (ret)
 568                 return ret;
 569         ret = late_init_minor(dev->control);
 570         return ret;
 571 }
 572
 573 static int msm_debugfs_init(struct drm_minor *minor)
 574 {
 575         struct drm_device *dev = minor->dev;
 576         int ret;
 577
 578         ret = drm_debugfs_create_files(msm_debugfs_list,
 579                         ARRAY_SIZE(msm_debugfs_list),
 580                         minor->debugfs_root, minor);
 581
 582         if (ret) {
 583                 dev_err(dev->dev, "could not install msm_debugfs_list\n");
 584                 return ret;
 585         }
 586
 587         return 0;
 588 }
 589
 590 static void msm_debugfs_cleanup(struct drm_minor *minor)
 591 {
 592         drm_debugfs_remove_files(msm_debugfs_list,
 593                         ARRAY_SIZE(msm_debugfs_list), minor);
 594         if (!minor->dev->dev_private)
 595                 return;
 596         msm_rd_debugfs_cleanup(minor);
 597         msm_perf_debugfs_cleanup(minor);
 598 }
 599 #endif
 600
 601 /*
 602  * Fences:
 603  */
 604
 605 int msm_wait_fence_interruptable(struct drm_device *dev, uint32_t fence,
 606                 struct timespec *timeout)
 607 {
 608         struct msm_drm_private *priv = dev->dev_private;
 609         int ret;
 610
 611         if (!priv->gpu)
 612                 return 0;
 613
 614         if (fence > priv->gpu->submitted_fence) {
 615                 DRM_ERROR("waiting on invalid fence: %u (of %u)\n",
 616                                 fence, priv->gpu->submitted_fence);
 617                 return -EINVAL;
 618         }
 619
 620         if (!timeout) {
 621                 /* no-wait: */
 622                 ret = fence_completed(dev, fence) ? 0 : -EBUSY;
 623         } else {
 624                 unsigned long timeout_jiffies = timespec_to_jiffies(timeout);
 625                 unsigned long start_jiffies = jiffies;
 626                 unsigned long remaining_jiffies;
 627
 628                 if (time_after(start_jiffies, timeout_jiffies))
 629                         remaining_jiffies = 0;
 630                 else
 631                         remaining_jiffies = timeout_jiffies - start_jiffies;
 632
 633                 ret = wait_event_interruptible_timeout(priv->fence_event,
 634                                 fence_completed(dev, fence),
 635                                 remaining_jiffies);
 636
 637                 if (ret == 0) {
 638                         DBG("timeout waiting for fence: %u (completed: %u)",
 639                                         fence, priv->completed_fence);
 640                         ret = -ETIMEDOUT;
 641                 } else if (ret != -ERESTARTSYS) {
 642                         ret = 0;
 643                 }
 644         }
 645
 646         return ret;
 647 }
 648
 649 /* called from workqueue */
 650 void msm_update_fence(struct drm_device *dev, uint32_t fence)
 651 {
 652         struct msm_drm_private *priv = dev->dev_private;
 653
 654         mutex_lock(&dev->struct_mutex);
 655         priv->completed_fence = max(fence, priv->completed_fence);
 656
 657         while (!list_empty(&priv->fence_cbs)) {
 658                 struct msm_fence_cb *cb;
 659
 660                 cb = list_first_entry(&priv->fence_cbs,
 661                                 struct msm_fence_cb, work.entry);
 662
 663                 if (cb->fence > priv->completed_fence)
 664                         break;
 665
 666                 list_del_init(&cb->work.entry);
 667                 queue_work(priv->wq, &cb->work);
 668         }
 669
 670         mutex_unlock(&dev->struct_mutex);
 671
 672         wake_up_all(&priv->fence_event);
 673 }
 674
 675 void __msm_fence_worker(struct work_struct *work)
 676 {
 677         struct msm_fence_cb *cb = container_of(work, struct msm_fence_cb, work);
 678         cb->func(cb);
 679 }
 680
 681 /*
 682  * DRM ioctls:
 683  */
 684
 685 static int msm_ioctl_get_param(struct drm_device *dev, void *data,
 686                 struct drm_file *file)
 687 {
 688         struct msm_drm_private *priv = dev->dev_private;
 689         struct drm_msm_param *args = data;
 690         struct msm_gpu *gpu;
 691
 692         /* for now, we just have 3d pipe.. eventually this would need to
 693          * be more clever to dispatch to appropriate gpu module:
 694          */
 695         if (args->pipe != MSM_PIPE_3D0)
 696                 return -EINVAL;
 697
 698         gpu = priv->gpu;
 699
 700         if (!gpu)
 701                 return -ENXIO;
 702
 703         return gpu->funcs->get_param(gpu, args->param, &args->value);
 704 }
 705
 706 static int msm_ioctl_gem_new(struct drm_device *dev, void *data,
 707                 struct drm_file *file)
 708 {
 709         struct drm_msm_gem_new *args = data;
 710
 711         if (args->flags & ~MSM_BO_FLAGS) {
 712                 DRM_ERROR("invalid flags: %08x\n", args->flags);
 713                 return -EINVAL;
 714         }
 715
 716         return msm_gem_new_handle(dev, file, args->size,
 717                         args->flags, &args->handle);
 718 }
 719
 720 #define TS(t) ((struct timespec){ .tv_sec = (t).tv_sec, .tv_nsec = (t).tv_nsec })
 721
 722 static int msm_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
 723                 struct drm_file *file)
 724 {
 725         struct drm_msm_gem_cpu_prep *args = data;
 726         struct drm_gem_object *obj;
 727         int ret;
 728
 729         if (args->op & ~MSM_PREP_FLAGS) {
 730                 DRM_ERROR("invalid op: %08x\n", args->op);
 731                 return -EINVAL;
 732         }
 733
 734         obj = drm_gem_object_lookup(dev, file, args->handle);
 735         if (!obj)
 736                 return -ENOENT;
 737
 738         ret = msm_gem_cpu_prep(obj, args->op, &TS(args->timeout));
 739
 740         drm_gem_object_unreference_unlocked(obj);
 741
 742         return ret;
 743 }
 744
 745 static int msm_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
 746                 struct drm_file *file)
 747 {
 748         struct drm_msm_gem_cpu_fini *args = data;
 749         struct drm_gem_object *obj;
 750         int ret;
 751
 752         obj = drm_gem_object_lookup(dev, file, args->handle);
 753         if (!obj)
 754                 return -ENOENT;
 755
 756         ret = msm_gem_cpu_fini(obj);
 757
 758         drm_gem_object_unreference_unlocked(obj);
 759
 760         return ret;
 761 }
 762
 763 static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
 764                 struct drm_file *file)
 765 {
 766         struct drm_msm_gem_info *args = data;
 767         struct drm_gem_object *obj;
 768         int ret = 0;
 769
 770         if (args->pad)
 771                 return -EINVAL;
 772
 773         obj = drm_gem_object_lookup(dev, file, args->handle);
 774         if (!obj)
 775                 return -ENOENT;
 776
 777         args->offset = msm_gem_mmap_offset(obj);
 778
 779         drm_gem_object_unreference_unlocked(obj);
 780
 781         return ret;
 782 }
 783
 784 static int msm_ioctl_wait_fence(struct drm_device *dev, void *data,
 785                 struct drm_file *file)
 786 {
 787         struct drm_msm_wait_fence *args = data;
 788
 789         if (args->pad) {
 790                 DRM_ERROR("invalid pad: %08x\n", args->pad);
 791                 return -EINVAL;
 792         }
 793
 794         return msm_wait_fence_interruptable(dev, args->fence,
 795                         &TS(args->timeout));
 796 }
 797
 798 static const struct drm_ioctl_desc msm_ioctls[] = {
 799         DRM_IOCTL_DEF_DRV(MSM_GET_PARAM,    msm_ioctl_get_param,    DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
 800         DRM_IOCTL_DEF_DRV(MSM_GEM_NEW,      msm_ioctl_gem_new,      DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
 801         DRM_IOCTL_DEF_DRV(MSM_GEM_INFO,     msm_ioctl_gem_info,     DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
 802         DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_PREP, msm_ioctl_gem_cpu_prep, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
 803         DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_FINI, msm_ioctl_gem_cpu_fini, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
 804         DRM_IOCTL_DEF_DRV(MSM_GEM_SUBMIT,   msm_ioctl_gem_submit,   DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
 805         DRM_IOCTL_DEF_DRV(MSM_WAIT_FENCE,   msm_ioctl_wait_fence,   DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
 806 };
 807
 808 static const struct vm_operations_struct vm_ops = {
 809         .fault = msm_gem_fault,
 810         .open = drm_gem_vm_open,
 811         .close = drm_gem_vm_close,
 812 };
 813
 814 static const struct file_operations fops = {
 815         .owner              = THIS_MODULE,
 816         .open               = drm_open,
 817         .release            = drm_release,
 818         .unlocked_ioctl     = drm_ioctl,
 819 #ifdef CONFIG_COMPAT
 820         .compat_ioctl       = drm_compat_ioctl,
 821 #endif
 822         .poll               = drm_poll,
 823         .read               = drm_read,
 824         .llseek             = no_llseek,
 825         .mmap               = msm_gem_mmap,
 826 };
 827
 828 static struct drm_driver msm_driver = {
 829         .driver_features    = DRIVER_HAVE_IRQ |
 830                                 DRIVER_GEM |
 831                                 DRIVER_PRIME |
 832                                 DRIVER_RENDER |
 833                                 DRIVER_MODESET,
 834         .load               = msm_load,
 835         .unload             = msm_unload,
 836         .open               = msm_open,
 837         .preclose           = msm_preclose,
 838         .lastclose          = msm_lastclose,
 839         .set_busid          = drm_platform_set_busid,
 840         .irq_handler        = msm_irq,
 841         .irq_preinstall     = msm_irq_preinstall,
 842         .irq_postinstall    = msm_irq_postinstall,
 843         .irq_uninstall      = msm_irq_uninstall,
 844         .get_vblank_counter = drm_vblank_count,
 845         .enable_vblank      = msm_enable_vblank,
 846         .disable_vblank     = msm_disable_vblank,
 847         .gem_free_object    = msm_gem_free_object,
 848         .gem_vm_ops         = &vm_ops,
 849         .dumb_create        = msm_gem_dumb_create,
 850         .dumb_map_offset    = msm_gem_dumb_map_offset,
 851         .dumb_destroy       = drm_gem_dumb_destroy,
 852         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 853         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 854         .gem_prime_export   = drm_gem_prime_export,
 855         .gem_prime_import   = drm_gem_prime_import,
 856         .gem_prime_pin      = msm_gem_prime_pin,
 857         .gem_prime_unpin    = msm_gem_prime_unpin,
 858         .gem_prime_get_sg_table = msm_gem_prime_get_sg_table,
 859         .gem_prime_import_sg_table = msm_gem_prime_import_sg_table,
 860         .gem_prime_vmap     = msm_gem_prime_vmap,
 861         .gem_prime_vunmap   = msm_gem_prime_vunmap,
 862 #ifdef CONFIG_DEBUG_FS
 863         .debugfs_init       = msm_debugfs_init,
 864         .debugfs_cleanup    = msm_debugfs_cleanup,
 865 #endif
 866         .ioctls             = msm_ioctls,
 867         .num_ioctls         = DRM_MSM_NUM_IOCTLS,
 868         .fops               = &fops,
 869         .name               = "msm",
 870         .desc               = "MSM Snapdragon DRM",
 871         .date               = "20130625",
 872         .major              = 1,
 873         .minor              = 0,
 874 };
 875
 876 #ifdef CONFIG_PM_SLEEP
 877 static int msm_pm_suspend(struct device *dev)
 878 {
 879         struct drm_device *ddev = dev_get_drvdata(dev);
 880
 881         drm_kms_helper_poll_disable(ddev);
 882
 883         return 0;
 884 }
 885
 886 static int msm_pm_resume(struct device *dev)
 887 {
 888         struct drm_device *ddev = dev_get_drvdata(dev);
 889
 890         drm_kms_helper_poll_enable(ddev);
 891
 892         return 0;
 893 }
 894 #endif
 895
 896 static const struct dev_pm_ops msm_pm_ops = {
 897         SET_SYSTEM_SLEEP_PM_OPS(msm_pm_suspend, msm_pm_resume)
 898 };
 899
 900 /*
 901  * Componentized driver support:
 902  */
 903
 904 #ifdef CONFIG_OF
 905 /* NOTE: the CONFIG_OF case duplicates the same code as exynos or imx
 906  * (or probably any other).. so probably some room for some helpers
 907  */
 908 static int compare_of(struct device *dev, void *data)
 909 {
 910         return dev->of_node == data;
 911 }
 912
 913 static int add_components(struct device *dev, struct component_match **matchptr,
 914                 const char *name)
 915 {
 916         struct device_node *np = dev->of_node;
 917         unsigned i;
 918
 919         for (i = 0; ; i++) {
 920                 struct device_node *node;
 921
 922                 node = of_parse_phandle(np, name, i);
 923                 if (!node)
 924                         break;
 925
 926                 component_match_add(dev, matchptr, compare_of, node);
 927         }
 928
 929         return 0;
 930 }
 931 #else
 932 static int compare_dev(struct device *dev, void *data)
 933 {
 934         return dev == data;
 935 }
 936 #endif
 937
 938 static int msm_drm_bind(struct device *dev)
 939 {
 940         return drm_platform_init(&msm_driver, to_platform_device(dev));
 941 }
 942
 943 static void msm_drm_unbind(struct device *dev)
 944 {
 945         drm_put_dev(platform_get_drvdata(to_platform_device(dev)));
 946 }
 947
 948 static const struct component_master_ops msm_drm_ops = {
 949         .bind = msm_drm_bind,
 950         .unbind = msm_drm_unbind,
 951 };
 952
 953 /*
 954  * Platform driver:
 955  */
 956
 957 static int msm_pdev_probe(struct platform_device *pdev)
 958 {
 959         struct component_match *match = NULL;
 960 #ifdef CONFIG_OF
 961         add_components(&pdev->dev, &match, "connectors");
 962         add_components(&pdev->dev, &match, "gpus");
 963 #else
 964         /* For non-DT case, it kinda sucks.  We don't actually have a way
 965          * to know whether or not we are waiting for certain devices (or if
 966          * they are simply not present).  But for non-DT we only need to
 967          * care about apq8064/apq8060/etc (all mdp4/a3xx):
 968          */
 969         static const char *devnames[] = {
 970                         "hdmi_msm.0", "kgsl-3d0.0",
 971         };
 972         int i;
 973
 974         DBG("Adding components..");
 975
 976         for (i = 0; i < ARRAY_SIZE(devnames); i++) {
 977                 struct device *dev;
 978                 int ret;
 979
 980                 dev = bus_find_device_by_name(&platform_bus_type,
 981                                 NULL, devnames[i]);
 982                 if (!dev) {
 983                         dev_info(master, "still waiting for %s\n", devnames[i]);
 984                         return -EPROBE_DEFER;
 985                 }
 986
 987                 component_match_add(&pdev->dev, &match, compare_dev, dev);
 988         }
 989 #endif
 990
 991         pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 992         return component_master_add_with_match(&pdev->dev, &msm_drm_ops, match);
 993 }
 994
 995 static int msm_pdev_remove(struct platform_device *pdev)
 996 {
 997         component_master_del(&pdev->dev, &msm_drm_ops);
 998
 999         return 0;
1000 }
1001
1002 static const struct platform_device_id msm_id[] = {
1003         { "mdp", 0 },
1004         { }
1005 };
1006
1007 static const struct of_device_id dt_match[] = {
1008         { .compatible = "qcom,mdp" },      /* mdp4 */
1009         { .compatible = "qcom,mdss_mdp" }, /* mdp5 */
1010         {}
1011 };
1012 MODULE_DEVICE_TABLE(of, dt_match);
1013
1014 static struct platform_driver msm_platform_driver = {
1015         .probe      = msm_pdev_probe,
1016         .remove     = msm_pdev_remove,
1017         .driver     = {
1018                 .owner  = THIS_MODULE,
1019                 .name   = "msm",
1020                 .of_match_table = dt_match,
1021                 .pm     = &msm_pm_ops,
1022         },
1023         .id_table   = msm_id,
1024 };
1025
1026 static int __init msm_drm_register(void)
1027 {
1028         DBG("init");
1029         hdmi_register();
1030         a3xx_register();
1031         return platform_driver_register(&msm_platform_driver);
1032 }
1033
1034 static void __exit msm_drm_unregister(void)
1035 {
1036         DBG("fini");
1037         platform_driver_unregister(&msm_platform_driver);
1038         hdmi_unregister();
1039         a3xx_unregister();
1040 }
1041
1042 module_init(msm_drm_register);
1043 module_exit(msm_drm_unregister);
1044
1045 MODULE_AUTHOR("Rob Clark <robdclark@gmail.com");
1046 MODULE_DESCRIPTION("MSM DRM Driver");
1047 MODULE_LICENSE("GPL");