Commit 66d9cb5d authored by Chris Wilson's avatar Chris Wilson

drm/i915: Mock the GEM device for self-testing

A simulacrum of drm_i915_private to let us pretend interactions with the
device.

v2: Tidy init error paths
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: default avatarMatthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170213171558.20942-6-chris@chris-wilson.co.uk
parent e62e8ad1
...@@ -2668,3 +2668,7 @@ static struct drm_driver driver = { ...@@ -2668,3 +2668,7 @@ static struct drm_driver driver = {
.minor = DRIVER_MINOR, .minor = DRIVER_MINOR,
.patchlevel = DRIVER_PATCHLEVEL, .patchlevel = DRIVER_PATCHLEVEL,
}; };
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
#include "selftests/mock_drm.c"
#endif
...@@ -5023,4 +5023,5 @@ i915_gem_object_get_dma_address(struct drm_i915_gem_object *obj, ...@@ -5023,4 +5023,5 @@ i915_gem_object_get_dma_address(struct drm_i915_gem_object *obj,
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
#include "selftests/scatterlist.c" #include "selftests/scatterlist.c"
#include "selftests/mock_gem_device.c"
#endif #endif
/*
* Copyright © 2017 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 "mock_drm.h"
static inline struct inode fake_inode(struct drm_i915_private *i915)
{
return (struct inode){ .i_rdev = i915->drm.primary->index };
}
struct drm_file *mock_file(struct drm_i915_private *i915)
{
struct inode inode = fake_inode(i915);
struct file filp = {};
struct drm_file *file;
int err;
err = drm_open(&inode, &filp);
if (unlikely(err))
return ERR_PTR(err);
file = filp.private_data;
file->authenticated = true;
return file;
}
void mock_file_free(struct drm_i915_private *i915, struct drm_file *file)
{
struct inode inode = fake_inode(i915);
struct file filp = { .private_data = file };
drm_release(&inode, &filp);
}
/*
* Copyright © 2017 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.
*
*/
#ifndef __MOCK_DRM_H
#define __MOCK_DRM_H
struct drm_file *mock_file(struct drm_i915_private *i915);
void mock_file_free(struct drm_i915_private *i915, struct drm_file *file);
#endif /* !__MOCK_DRM_H */
/*
* 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;
}
#ifndef __MOCK_GEM_DEVICE_H__
#define __MOCK_GEM_DEVICE_H__
struct drm_i915_private;
struct drm_i915_private *mock_gem_device(void);
#endif /* !__MOCK_GEM_DEVICE_H__ */
#ifndef __MOCK_GEM_OBJECT_H__
#define __MOCK_GEM_OBJECT_H__
struct mock_object {
struct drm_i915_gem_object base;
};
#endif /* !__MOCK_GEM_OBJECT_H__ */
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