fb87550d25
Exercise each of the migration scenarios, verifying that the final placement and buffer contents match our expectations. v2(Thomas): Replace for_i915_gem_ww() block with simpler object_lock() v3: - For testing purposes allow forcing the io_size such that we can exercise the allocation + migration path on devices that don't have the small BAR limit. Signed-off-by: Matthew Auld <matthew.auld@intel.com> Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220228123607.580432-4-matthew.auld@intel.com
70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2021 Intel Corporation
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*/
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#ifndef __I915_TTM_BUDDY_MANAGER_H__
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#define __I915_TTM_BUDDY_MANAGER_H__
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#include <linux/list.h>
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#include <linux/types.h>
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#include <drm/ttm/ttm_resource.h>
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struct ttm_device;
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struct ttm_resource_manager;
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struct drm_buddy;
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/**
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* struct i915_ttm_buddy_resource
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*
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* @base: struct ttm_resource base class we extend
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* @blocks: the list of struct i915_buddy_block for this resource/allocation
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* @flags: DRM_BUDDY_*_ALLOCATION flags
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* @used_visible_size: How much of this resource, if any, uses the CPU visible
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* portion, in pages.
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* @mm: the struct i915_buddy_mm for this resource
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*
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* Extends the struct ttm_resource to manage an address space allocation with
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* one or more struct i915_buddy_block.
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*/
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struct i915_ttm_buddy_resource {
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struct ttm_resource base;
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struct list_head blocks;
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unsigned long flags;
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unsigned long used_visible_size;
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struct drm_buddy *mm;
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};
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/**
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* to_ttm_buddy_resource
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*
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* @res: the resource to upcast
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*
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* Upcast the struct ttm_resource object into a struct i915_ttm_buddy_resource.
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*/
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static inline struct i915_ttm_buddy_resource *
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to_ttm_buddy_resource(struct ttm_resource *res)
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{
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return container_of(res, struct i915_ttm_buddy_resource, base);
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}
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int i915_ttm_buddy_man_init(struct ttm_device *bdev,
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unsigned type, bool use_tt,
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u64 size, u64 visible_size,
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u64 default_page_size, u64 chunk_size);
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int i915_ttm_buddy_man_fini(struct ttm_device *bdev,
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unsigned int type);
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int i915_ttm_buddy_man_reserve(struct ttm_resource_manager *man,
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u64 start, u64 size);
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u64 i915_ttm_buddy_man_visible_size(struct ttm_resource_manager *man);
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#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
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void i915_ttm_buddy_man_force_visible_size(struct ttm_resource_manager *man,
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u64 size);
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#endif
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#endif
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