6387a3c4b0
Move the base i915 buddy allocator code into drm
- Move i915_buddy.h to include/drm
- Move i915_buddy.c to drm root folder
- Rename "i915" string with "drm" string wherever applicable
- Rename "I915" string with "DRM" string wherever applicable
- Fix header file dependencies
- Fix alignment issues
- add Makefile support for drm buddy
- export functions and write kerneldoc description
- Remove i915 selftest config check condition as buddy selftest
will be moved to drm selftest folder
cleanup i915 buddy references in i915 driver module
and replace with drm buddy
v2:
- include header file in alphabetical order(Thomas)
- merged changes listed in the body section into a single patch
to keep the build intact(Christian, Jani)
v3:
- make drm buddy a separate module(Thomas, Christian)
v4:
- Fix build error reported by kernel test robot <lkp@intel.com>
- removed i915 buddy selftest from i915_mock_selftests.h to
avoid build error
- removed selftests/i915_buddy.c file as we create a new set of
buddy test cases in drm/selftests folder
v5:
- Fix merge conflict issue
v6:
- replace drm_buddy_mm structure name as drm_buddy(Thomas, Christian)
- replace drm_buddy_alloc() function name as drm_buddy_alloc_blocks()
(Thomas)
- replace drm_buddy_free() function name as drm_buddy_free_block()
(Thomas)
- export drm_buddy_free_block() function
- fix multiple instances of KMEM_CACHE() entry
v7:
- fix warnings reported by kernel test robot <lkp@intel.com>
- modify the license(Christian)
v8:
- fix warnings reported by kernel test robot <lkp@intel.com>
Signed-off-by: Arunpravin <Arunpravin.PaneerSelvam@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220118104504.2349-1-Arunpravin.PaneerSelvam@amd.com
Signed-off-by: Christian König <christian.koenig@amd.com>
57 lines
1.4 KiB
C
57 lines
1.4 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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* @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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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 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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#endif
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