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/*
* 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);
}
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