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linux-next/drivers/gpu/drm/i915/selftests/mock_gem_device.c
Chris Wilson 3ec0af7f22 drm/i915: Supply the engine-id for our mock_engine() 
In the original selftest, we didn't care what the engine->id was, just
that it could uniquely identify it. Later though, we started tracking
the mock engines in the fixed size arrays around the drm_i915_private and
so we now require their indices to be correct. This becomes an issue when
using the standalone harness which runs all available tests at module load,
and so we quickly assign an out-of-bounds index to an engine as we
reallocate the mock GEM device between tests. It doesn't show up in
igt/drv_selftest as that runs each subtest individually.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102045
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20170809163930.26470-1-chris@chris-wilson.co.uk
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
2017-08-10 12:18:35 +01:00

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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 "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_gem_retire_requests(i915);
}
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);
i915_gem_timeline_fini(&i915->gt.global_timeline);
mutex_unlock(&i915->drm.struct_mutex);
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);
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 intel_engine_cs *engine;
enum intel_engine_id id;
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));
dev_pm_domain_set(&pdev->dev, &pm_domain);
pm_runtime_enable(&pdev->dev);
pm_runtime_dont_use_autosuspend(&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;
spin_lock_init(&i915->mm.object_stat_lock);
mock_uncore_init(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 put_device;
INIT_WORK(&i915->mm.free_work, __i915_gem_free_work);
init_llist_head(&i915->mm.free_list);
INIT_LIST_HEAD(&i915->mm.unbound_list);
INIT_LIST_HEAD(&i915->mm.bound_list);
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;
mutex_lock(&i915->drm.struct_mutex);
INIT_LIST_HEAD(&i915->gt.timelines);
err = i915_gem_timeline_init__global(i915);
if (err) {
mutex_unlock(&i915->drm.struct_mutex);
goto err_priorities;
}
mock_init_ggtt(i915);
mutex_unlock(&i915->drm.struct_mutex);
mkwrite_device_info(i915)->ring_mask = BIT(0);
i915->engine[RCS] = mock_engine(i915, "mock", RCS);
if (!i915->engine[RCS])
goto err_priorities;
i915->kernel_context = mock_context(i915, NULL);
if (!i915->kernel_context)
goto err_engine;
return i915;
err_engine:
for_each_engine(engine, i915, id)
mock_engine_free(engine);
err_priorities:
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);
put_device:
put_device(&pdev->dev);
err:
return NULL;
}
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