1 files changed, 252 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..fff11c90f
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
@@ -0,0 +1,252 @@
+/*
+ * 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 <linux/iommu.h>
+
+#include <drm/drm_managed.h>
+
+#include "gt/intel_gt.h"
+#include "gt/intel_gt_requests.h"
+#include "gt/mock_engine.h"
+#include "intel_memory_region.h"
+#include "intel_region_ttm.h"
+
+#include "mock_request.h"
+#include "mock_gem_device.h"
+#include "mock_gtt.h"
+#include "mock_uncore.h"
+#include "mock_region.h"
+
+#include "gem/selftests/mock_context.h"
+#include "gem/selftests/mock_gem_object.h"
+
+void mock_device_flush(struct drm_i915_private *i915)
+{
+	struct intel_gt *gt = to_gt(i915);
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+
+	do {
+		for_each_engine(engine, gt, id)
+			mock_engine_flush(engine);
+	} while (intel_gt_retire_requests_timeout(gt, MAX_SCHEDULE_TIMEOUT,
+						  NULL));
+}
+
+static void mock_device_release(struct drm_device *dev)
+{
+	struct drm_i915_private *i915 = to_i915(dev);
+
+	if (!i915->do_release)
+		goto out;
+
+	mock_device_flush(i915);
+	intel_gt_driver_remove(to_gt(i915));
+
+	i915_gem_drain_workqueue(i915);
+	i915_gem_drain_freed_objects(i915);
+
+	mock_fini_ggtt(to_gt(i915)->ggtt);
+	destroy_workqueue(i915->wq);
+
+	intel_region_ttm_device_fini(i915);
+	intel_gt_driver_late_release_all(i915);
+	intel_memory_regions_driver_release(i915);
+
+	drm_mode_config_cleanup(&i915->drm);
+
+out:
+	i915_params_free(&i915->params);
+}
+
+static const struct drm_driver mock_driver = {
+	.name = "mock",
+	.driver_features = DRIVER_GEM,
+	.release = mock_device_release,
+};
+
+static void release_dev(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+
+	kfree(pdev);
+}
+
+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,
+	},
+};
+
+static void mock_gt_probe(struct drm_i915_private *i915)
+{
+	i915->gt[0] = &i915->gt0;
+	i915->gt[0]->name = "Mock GT";
+}
+
+struct drm_i915_private *mock_gem_device(void)
+{
+#if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
+	static struct dev_iommu fake_iommu = { .priv = (void *)-1 };
+#endif
+	struct drm_i915_private *i915;
+	struct pci_dev *pdev;
+	int ret;
+
+	pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
+	if (!pdev)
+		return NULL;
+	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(64));
+
+#if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
+	/* HACK to disable iommu for the fake device; force identity mapping */
+	pdev->dev.iommu = &fake_iommu;
+#endif
+	if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {
+		put_device(&pdev->dev);
+		return NULL;
+	}
+
+	i915 = devm_drm_dev_alloc(&pdev->dev, &mock_driver,
+				  struct drm_i915_private, drm);
+	if (IS_ERR(i915)) {
+		pr_err("Failed to allocate mock GEM device: err=%ld\n", PTR_ERR(i915));
+		devres_release_group(&pdev->dev, NULL);
+		put_device(&pdev->dev);
+
+		return NULL;
+	}
+
+	pci_set_drvdata(pdev, i915);
+
+	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_params_copy(&i915->params, &i915_modparams);
+
+	intel_runtime_pm_init_early(&i915->runtime_pm);
+	/* wakeref tracking has significant overhead */
+	i915->runtime_pm.no_wakeref_tracking = true;
+
+	/* Using the global GTT may ask questions about KMS users, so prepare */
+	drm_mode_config_init(&i915->drm);
+
+	RUNTIME_INFO(i915)->graphics.ip.ver = -1;
+
+	RUNTIME_INFO(i915)->page_sizes =
+		I915_GTT_PAGE_SIZE_4K |
+		I915_GTT_PAGE_SIZE_64K |
+		I915_GTT_PAGE_SIZE_2M;
+
+	RUNTIME_INFO(i915)->memory_regions = REGION_SMEM;
+	intel_memory_regions_hw_probe(i915);
+
+	spin_lock_init(&i915->gpu_error.lock);
+
+	i915_gem_init__mm(i915);
+	intel_root_gt_init_early(i915);
+	mock_uncore_init(&i915->uncore, i915);
+	atomic_inc(&to_gt(i915)->wakeref.count); /* disable; no hw support */
+	to_gt(i915)->awake = -ENODEV;
+	mock_gt_probe(i915);
+
+	ret = intel_region_ttm_device_init(i915);
+	if (ret)
+		goto err_ttm;
+
+	i915->wq = alloc_ordered_workqueue("mock", 0);
+	if (!i915->wq)
+		goto err_drv;
+
+	mock_init_contexts(i915);
+
+	/* allocate the ggtt */
+	ret = intel_gt_assign_ggtt(to_gt(i915));
+	if (ret)
+		goto err_unlock;
+
+	mock_init_ggtt(to_gt(i915));
+	to_gt(i915)->vm = i915_vm_get(&to_gt(i915)->ggtt->vm);
+
+	RUNTIME_INFO(i915)->platform_engine_mask = BIT(0);
+	to_gt(i915)->info.engine_mask = BIT(0);
+
+	to_gt(i915)->engine[RCS0] = mock_engine(i915, "mock", RCS0);
+	if (!to_gt(i915)->engine[RCS0])
+		goto err_unlock;
+
+	if (mock_engine_init(to_gt(i915)->engine[RCS0]))
+		goto err_context;
+
+	__clear_bit(I915_WEDGED, &to_gt(i915)->reset.flags);
+	intel_engines_driver_register(i915);
+
+	i915->do_release = true;
+	ida_init(&i915->selftest.mock_region_instances);
+
+	return i915;
+
+err_context:
+	intel_gt_driver_remove(to_gt(i915));
+err_unlock:
+	destroy_workqueue(i915->wq);
+err_drv:
+	intel_region_ttm_device_fini(i915);
+err_ttm:
+	intel_gt_driver_late_release_all(i915);
+	intel_memory_regions_driver_release(i915);
+	drm_mode_config_cleanup(&i915->drm);
+	mock_destroy_device(i915);
+
+	return NULL;
+}
+
+void mock_destroy_device(struct drm_i915_private *i915)
+{
+	struct device *dev = i915->drm.dev;
+
+	devres_release_group(dev, NULL);
+	put_device(dev);
+}