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