/* SPDX-License-Identifier: MIT */ /* * Copyright © 2021 Intel Corporation */ #ifndef __I915_TTM_BUDDY_MANAGER_H__ #define __I915_TTM_BUDDY_MANAGER_H__ #include <linux/list.h> #include <linux/types.h> #include <drm/ttm/ttm_resource.h> struct ttm_device; struct ttm_resource_manager; struct drm_buddy; /** * struct i915_ttm_buddy_resource * * @base: struct ttm_resource base class we extend * @blocks: the list of struct i915_buddy_block for this resource/allocation * @flags: DRM_BUDDY_*_ALLOCATION flags * @used_visible_size: How much of this resource, if any, uses the CPU visible * portion, in pages. * @mm: the struct i915_buddy_mm for this resource * * Extends the struct ttm_resource to manage an address space allocation with * one or more struct i915_buddy_block. */ struct i915_ttm_buddy_resource { struct ttm_resource base; struct list_head blocks; unsigned long flags; unsigned long used_visible_size; struct drm_buddy *mm; }; /** * to_ttm_buddy_resource * * @res: the resource to upcast * * Upcast the struct ttm_resource object into a struct i915_ttm_buddy_resource. */ static inline struct i915_ttm_buddy_resource * to_ttm_buddy_resource(struct ttm_resource *res) { return container_of(res, struct i915_ttm_buddy_resource, base); } int i915_ttm_buddy_man_init(struct ttm_device *bdev, unsigned type, bool use_tt, u64 size, u64 visible_size, u64 default_page_size, u64 chunk_size); int i915_ttm_buddy_man_fini(struct ttm_device *bdev, unsigned int type); int i915_ttm_buddy_man_reserve(struct ttm_resource_manager *man, u64 start, u64 size); u64 i915_ttm_buddy_man_visible_size(struct ttm_resource_manager *man); void i915_ttm_buddy_man_avail(struct ttm_resource_manager *man, u64 *avail, u64 *avail_visible); #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) void i915_ttm_buddy_man_force_visible_size(struct ttm_resource_manager *man, u64 size); #endif #endif