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Release 4.12 drivers/gpu/drm/i915/selftests/mock_gtt.c

/*
 * 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) { }

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static void mock_insert_entries(struct i915_address_space *vm, struct sg_table *st, u64 start, enum i915_cache_level level, u32 flags) { }

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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; }

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static void mock_unbind_ppgtt(struct i915_vma *vma) { }

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static void mock_cleanup(struct i915_address_space *vm) { }

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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; }

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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; }

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static void mock_unbind_ggtt(struct i915_vma *vma) { }

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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"); }

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void mock_fini_ggtt(struct drm_i915_private *i915) { struct i915_ggtt *ggtt = &i915->ggtt; i915_address_space_fini(&ggtt->base); }

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