drm/i915: Mock a GGTT for self-testing (3b5bb0a3) · Commits · e / devices / android_kernel_teracube_emerald

drivers/gpu/drm/i915/i915_gem_gtt.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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

drivers/gpu/drm/i915/selftests/mock_gem_device.c

+31 −0

Original line number	Diff line number	Diff line
		@@ -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:

drivers/gpu/drm/i915/selftests/mock_gtt.c

0 → 100644

+138 −0

Original line number	Diff line number	Diff line
		/*
		* 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);
		}

drivers/gpu/drm/i915/selftests/mock_gtt.h

0 → 100644

+35 −0

Original line number	Diff line number	Diff line
		/*
		* 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 */