/* * Copyright © 2016 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. * */ #include <linux/pm_runtime.h> #include "mock_gem_device.h" #include "mock_gem_object.h" static void mock_device_release(struct drm_device *dev) { struct drm_i915_private *i915 = to_i915(dev); i915_gem_drain_freed_objects(i915); kmem_cache_destroy(i915->objects); drm_dev_fini(&i915->drm); put_device(&i915->drm.pdev->dev); } static struct drm_driver mock_driver = { .name = "mock", .driver_features = DRIVER_GEM, .release = mock_device_release, .gem_close_object = i915_gem_close_object, .gem_free_object_unlocked = i915_gem_free_object, }; static void release_dev(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); kfree(pdev); } struct drm_i915_private *mock_gem_device(void) { struct drm_i915_private *i915; struct pci_dev *pdev; int err; pdev = kzalloc(sizeof(*pdev) + sizeof(*i915), GFP_KERNEL); if (!pdev) goto err; device_initialize(&pdev->dev); pdev->dev.release = release_dev; dev_set_name(&pdev->dev, "mock"); dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); pm_runtime_dont_use_autosuspend(&pdev->dev); pm_runtime_get_sync(&pdev->dev); i915 = (struct drm_i915_private *)(pdev + 1); pci_set_drvdata(pdev, i915); err = drm_dev_init(&i915->drm, &mock_driver, &pdev->dev); if (err) { pr_err("Failed to initialise mock GEM device: err=%d\n", err); goto put_device; } i915->drm.pdev = pdev; i915->drm.dev_private = i915; mkwrite_device_info(i915)->gen = -1; spin_lock_init(&i915->mm.object_stat_lock); INIT_WORK(&i915->mm.free_work, __i915_gem_free_work); init_llist_head(&i915->mm.free_list); i915->objects = KMEM_CACHE(mock_object, SLAB_HWCACHE_ALIGN); if (!i915->objects) goto put_device; return i915; put_device: put_device(&pdev->dev); err: return NULL; }