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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 "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 = &i915->gt;
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));
}
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(&i915->gt);
i915_gem_driver_release__contexts(i915);
i915_gem_drain_workqueue(i915);
i915_gem_drain_freed_objects(i915);
mock_fini_ggtt(&i915->ggtt);
destroy_workqueue(i915->wq);
intel_gt_driver_late_release(&i915->gt);
intel_memory_regions_driver_release(i915);
drm_mode_config_cleanup(&i915->drm);
out:
i915_params_free(&i915->params);
put_device(&i915->drm.pdev->dev);
i915->drm.pdev = NULL;
}
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 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;
#if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
struct dev_iommu iommu;
#endif
int err;
pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
if (!pdev)
return NULL;
i915 = kzalloc(sizeof(*i915), GFP_KERNEL);
if (!i915) {
kfree(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 HACK HACK to disable iommu for the fake device; force identity mapping */
memset(&iommu, 0, sizeof(iommu));
iommu.priv = (void *)-1;
pdev->dev.iommu = &iommu;
#endif
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));
err = drm_dev_init(&i915->drm, &mock_driver, &pdev->dev);
if (err) {
pr_err("Failed to initialise mock GEM device: err=%d\n", err);
put_device(&pdev->dev);
kfree(i915);
return NULL;
}
i915->drm.pdev = pdev;
drmm_add_final_kfree(&i915->drm, i915);
i915_params_copy(&i915->params, &i915_modparams);
intel_runtime_pm_init_early(&i915->runtime_pm);
/* 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;
mkwrite_device_info(i915)->memory_regions = REGION_SMEM;
intel_memory_regions_hw_probe(i915);
mock_uncore_init(&i915->uncore, i915);
i915_gem_init__mm(i915);
intel_gt_init_early(&i915->gt, i915);
atomic_inc(&i915->gt.wakeref.count); /* disable; no hw support */
i915->gt.awake = -ENODEV;
i915->wq = alloc_ordered_workqueue("mock", 0);
if (!i915->wq)
goto err_drv;
mock_init_contexts(i915);
mock_init_ggtt(i915, &i915->ggtt);
i915->gt.vm = i915_vm_get(&i915->ggtt.vm);
mkwrite_device_info(i915)->platform_engine_mask = BIT(0);
i915->gt.info.engine_mask = BIT(0);
i915->gt.engine[RCS0] = mock_engine(i915, "mock", RCS0);
if (!i915->gt.engine[RCS0])
goto err_unlock;
if (mock_engine_init(i915->gt.engine[RCS0]))
goto err_context;
__clear_bit(I915_WEDGED, &i915->gt.reset.flags);
intel_engines_driver_register(i915);
i915->do_release = true;
return i915;
err_context:
intel_gt_driver_remove(&i915->gt);
err_unlock:
destroy_workqueue(i915->wq);
err_drv:
intel_gt_driver_late_release(&i915->gt);
intel_memory_regions_driver_release(i915);
drm_mode_config_cleanup(&i915->drm);
drm_dev_put(&i915->drm);
return NULL;
}
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