1 files changed, 271 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/selftests/mock_gem_device.c b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
new file mode 100644
index 000000000..43ed8b28a
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
@@ -0,0 +1,271 @@
+/*
+ * 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_domain.h>
+#include <linux/pm_runtime.h>
+
+#include "mock_engine.h"
+#include "mock_context.h"
+#include "mock_request.h"
+#include "mock_gem_device.h"
+#include "mock_gem_object.h"
+#include "mock_gtt.h"
+#include "mock_uncore.h"
+
+void mock_device_flush(struct drm_i915_private *i915)
+{
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+
+	lockdep_assert_held(&i915->drm.struct_mutex);
+
+	for_each_engine(engine, i915, id)
+		mock_engine_flush(engine);
+
+	i915_retire_requests(i915);
+	GEM_BUG_ON(i915->gt.active_requests);
+}
+
+static void mock_device_release(struct drm_device *dev)
+{
+	struct drm_i915_private *i915 = to_i915(dev);
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+
+	mutex_lock(&i915->drm.struct_mutex);
+	mock_device_flush(i915);
+	i915_gem_contexts_lost(i915);
+	mutex_unlock(&i915->drm.struct_mutex);
+
+	cancel_delayed_work_sync(&i915->gt.retire_work);
+	cancel_delayed_work_sync(&i915->gt.idle_work);
+	i915_gem_drain_workqueue(i915);
+
+	mutex_lock(&i915->drm.struct_mutex);
+	for_each_engine(engine, i915, id)
+		mock_engine_free(engine);
+	i915_gem_contexts_fini(i915);
+	mutex_unlock(&i915->drm.struct_mutex);
+
+	drain_workqueue(i915->wq);
+	i915_gem_drain_freed_objects(i915);
+
+	mutex_lock(&i915->drm.struct_mutex);
+	mock_fini_ggtt(i915);
+	mutex_unlock(&i915->drm.struct_mutex);
+	WARN_ON(!list_empty(&i915->gt.timelines));
+
+	destroy_workqueue(i915->wq);
+
+	kmem_cache_destroy(i915->priorities);
+	kmem_cache_destroy(i915->dependencies);
+	kmem_cache_destroy(i915->requests);
+	kmem_cache_destroy(i915->vmas);
+	kmem_cache_destroy(i915->objects);
+
+	i915_gemfs_fini(i915);
+
+	drm_mode_config_cleanup(&i915->drm);
+
+	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);
+}
+
+static void mock_retire_work_handler(struct work_struct *work)
+{
+}
+
+static void mock_idle_work_handler(struct work_struct *work)
+{
+}
+
+static int pm_domain_resume(struct device *dev)
+{
+	return pm_generic_runtime_resume(dev);
+}
+
+static int pm_domain_suspend(struct device *dev)
+{
+	return pm_generic_runtime_suspend(dev);
+}
+
+static struct dev_pm_domain pm_domain = {
+	.ops = {
+		.runtime_suspend = pm_domain_suspend,
+		.runtime_resume = pm_domain_resume,
+	},
+};
+
+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->class = PCI_BASE_CLASS_DISPLAY << 16;
+	pdev->dev.release = release_dev;
+	dev_set_name(&pdev->dev, "mock");
+	dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+
+#if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
+	/* hack to disable iommu for the fake device; force identity mapping */
+	pdev->dev.archdata.iommu = (void *)-1;
+#endif
+
+	dev_pm_domain_set(&pdev->dev, &pm_domain);
+	pm_runtime_enable(&pdev->dev);
+	pm_runtime_dont_use_autosuspend(&pdev->dev);
+	if (pm_runtime_enabled(&pdev->dev))
+		WARN_ON(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;
+
+	/* Using the global GTT may ask questions about KMS users, so prepare */
+	drm_mode_config_init(&i915->drm);
+
+	mkwrite_device_info(i915)->gen = -1;
+
+	mkwrite_device_info(i915)->page_sizes =
+		I915_GTT_PAGE_SIZE_4K |
+		I915_GTT_PAGE_SIZE_64K |
+		I915_GTT_PAGE_SIZE_2M;
+
+	mock_uncore_init(i915);
+	i915_gem_init__mm(i915);
+
+	init_waitqueue_head(&i915->gpu_error.wait_queue);
+	init_waitqueue_head(&i915->gpu_error.reset_queue);
+
+	i915->wq = alloc_ordered_workqueue("mock", 0);
+	if (!i915->wq)
+		goto err_drv;
+
+	mock_init_contexts(i915);
+
+	INIT_DELAYED_WORK(&i915->gt.retire_work, mock_retire_work_handler);
+	INIT_DELAYED_WORK(&i915->gt.idle_work, mock_idle_work_handler);
+
+	i915->gt.awake = true;
+
+	i915->objects = KMEM_CACHE(mock_object, SLAB_HWCACHE_ALIGN);
+	if (!i915->objects)
+		goto err_wq;
+
+	i915->vmas = KMEM_CACHE(i915_vma, SLAB_HWCACHE_ALIGN);
+	if (!i915->vmas)
+		goto err_objects;
+
+	i915->requests = KMEM_CACHE(mock_request,
+				    SLAB_HWCACHE_ALIGN |
+				    SLAB_RECLAIM_ACCOUNT |
+				    SLAB_TYPESAFE_BY_RCU);
+	if (!i915->requests)
+		goto err_vmas;
+
+	i915->dependencies = KMEM_CACHE(i915_dependency,
+					SLAB_HWCACHE_ALIGN |
+					SLAB_RECLAIM_ACCOUNT);
+	if (!i915->dependencies)
+		goto err_requests;
+
+	i915->priorities = KMEM_CACHE(i915_priolist, SLAB_HWCACHE_ALIGN);
+	if (!i915->priorities)
+		goto err_dependencies;
+
+	INIT_LIST_HEAD(&i915->gt.timelines);
+	INIT_LIST_HEAD(&i915->gt.active_rings);
+	INIT_LIST_HEAD(&i915->gt.closed_vma);
+
+	mutex_lock(&i915->drm.struct_mutex);
+
+	mock_init_ggtt(i915);
+
+	mkwrite_device_info(i915)->ring_mask = BIT(0);
+	i915->kernel_context = mock_context(i915, NULL);
+	if (!i915->kernel_context)
+		goto err_unlock;
+
+	i915->engine[RCS] = mock_engine(i915, "mock", RCS);
+	if (!i915->engine[RCS])
+		goto err_context;
+
+	mutex_unlock(&i915->drm.struct_mutex);
+
+	WARN_ON(i915_gemfs_init(i915));
+
+	return i915;
+
+err_context:
+	i915_gem_contexts_fini(i915);
+err_unlock:
+	mutex_unlock(&i915->drm.struct_mutex);
+	kmem_cache_destroy(i915->priorities);
+err_dependencies:
+	kmem_cache_destroy(i915->dependencies);
+err_requests:
+	kmem_cache_destroy(i915->requests);
+err_vmas:
+	kmem_cache_destroy(i915->vmas);
+err_objects:
+	kmem_cache_destroy(i915->objects);
+err_wq:
+	destroy_workqueue(i915->wq);
+err_drv:
+	drm_mode_config_cleanup(&i915->drm);
+	drm_dev_fini(&i915->drm);
+put_device:
+	put_device(&pdev->dev);
+err:
+	return NULL;
+}