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drm/i915: Mock a GGTT for self-testing

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A very simple mockery, just a random manager and timeline. Useful for
inserting objects and ordering retirement; and not much else.

v2: mock_fini_ggtt() to complement mock_init_ggtt().

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170213171558.20942-7-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2017-02-13 17:15:18 +00:00
parent 66d9cb5d80
commit 3b5bb0a376
4 changed files with 208 additions and 0 deletions
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4
drivers/gpu/drm/i915/i915_gem_gtt.c
View File

@ -3757,3 +3757,7 @@ int i915_gem_gtt_insert(struct i915_address_space *vm,
size, alignment, color,
start, end, DRM_MM_INSERT_EVICT);
}
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
#include "selftests/mock_gtt.c"
#endif

31
drivers/gpu/drm/i915/selftests/mock_gem_device.c
View File

@ -26,6 +26,7 @@
#include "mock_gem_device.h"
#include "mock_gem_object.h"
#include "mock_gtt.h"
static void mock_device_release(struct drm_device *dev)
{
@ -33,6 +34,12 @@ static void mock_device_release(struct drm_device *dev)
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);
kmem_cache_destroy(i915->vmas);
kmem_cache_destroy(i915->objects);
drm_dev_fini(&i915->drm);
@ -84,19 +91,43 @@ struct drm_i915_private *mock_gem_device(void)
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);
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);
i915->objects = KMEM_CACHE(mock_object, SLAB_HWCACHE_ALIGN);
if (!i915->objects)
goto put_device;
i915->vmas = KMEM_CACHE(i915_vma, SLAB_HWCACHE_ALIGN);
if (!i915->vmas)
goto err_objects;
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_vmas;
}
mock_init_ggtt(i915);
mutex_unlock(&i915->drm.struct_mutex);
return i915;
err_vmas:
kmem_cache_destroy(i915->vmas);
err_objects:
kmem_cache_destroy(i915->objects);
put_device:
put_device(&pdev->dev);
err:

138
drivers/gpu/drm/i915/selftests/mock_gtt.c Normal file
View File

@ -0,0 +1,138 @@
/*
* 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 "mock_gtt.h"
static void mock_insert_page(struct i915_address_space *vm,
dma_addr_t addr,
u64 offset,
enum i915_cache_level level,
u32 flags)
{
}
static void mock_insert_entries(struct i915_address_space *vm,
struct sg_table *st,
u64 start,
enum i915_cache_level level, u32 flags)
{
}
static int mock_bind_ppgtt(struct i915_vma *vma,
enum i915_cache_level cache_level,
u32 flags)
{
GEM_BUG_ON(flags & I915_VMA_GLOBAL_BIND);
vma->pages = vma->obj->mm.pages;
vma->flags |= I915_VMA_LOCAL_BIND;
return 0;
}
static void mock_unbind_ppgtt(struct i915_vma *vma)
{
}
static void mock_cleanup(struct i915_address_space *vm)
{
}
struct i915_hw_ppgtt *
mock_ppgtt(struct drm_i915_private *i915,
const char *name)
{
struct i915_hw_ppgtt *ppgtt;
ppgtt = kzalloc(sizeof(*ppgtt), GFP_KERNEL);
if (!ppgtt)
return NULL;
kref_init(&ppgtt->ref);
ppgtt->base.i915 = i915;
ppgtt->base.total = round_down(U64_MAX, PAGE_SIZE);
ppgtt->base.file = ERR_PTR(-ENODEV);
INIT_LIST_HEAD(&ppgtt->base.active_list);
INIT_LIST_HEAD(&ppgtt->base.inactive_list);
INIT_LIST_HEAD(&ppgtt->base.unbound_list);
INIT_LIST_HEAD(&ppgtt->base.global_link);
drm_mm_init(&ppgtt->base.mm, 0, ppgtt->base.total);
i915_gem_timeline_init(i915, &ppgtt->base.timeline, name);
ppgtt->base.clear_range = nop_clear_range;
ppgtt->base.insert_page = mock_insert_page;
ppgtt->base.insert_entries = mock_insert_entries;
ppgtt->base.bind_vma = mock_bind_ppgtt;
ppgtt->base.unbind_vma = mock_unbind_ppgtt;
ppgtt->base.cleanup = mock_cleanup;
return ppgtt;
}
static int mock_bind_ggtt(struct i915_vma *vma,
enum i915_cache_level cache_level,
u32 flags)
{
int err;
err = i915_get_ggtt_vma_pages(vma);
if (err)
return err;
vma->flags |= I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND;
return 0;
}
static void mock_unbind_ggtt(struct i915_vma *vma)
{
}
void mock_init_ggtt(struct drm_i915_private *i915)
{
struct i915_ggtt *ggtt = &i915->ggtt;
INIT_LIST_HEAD(&i915->vm_list);
ggtt->base.i915 = i915;
ggtt->mappable_base = 0;
ggtt->mappable_end = 2048 * PAGE_SIZE;
ggtt->base.total = 4096 * PAGE_SIZE;
ggtt->base.clear_range = nop_clear_range;
ggtt->base.insert_page = mock_insert_page;
ggtt->base.insert_entries = mock_insert_entries;
ggtt->base.bind_vma = mock_bind_ggtt;
ggtt->base.unbind_vma = mock_unbind_ggtt;
ggtt->base.cleanup = mock_cleanup;
i915_address_space_init(&ggtt->base, i915, "global");
}
void mock_fini_ggtt(struct drm_i915_private *i915)
{
struct i915_ggtt *ggtt = &i915->ggtt;
i915_address_space_fini(&ggtt->base);
}

35
drivers/gpu/drm/i915/selftests/mock_gtt.h Normal file
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@ -0,0 +1,35 @@
/*
* 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.
*
*/
#ifndef __MOCK_GTT_H
#define __MOCK_GTT_H
void mock_init_ggtt(struct drm_i915_private *i915);
void mock_fini_ggtt(struct drm_i915_private *i915);
struct i915_hw_ppgtt *
mock_ppgtt(struct drm_i915_private *i915,
const char *name);
#endif /* !__MOCK_GTT_H */