c9cad937c0
- Switch to drm buddy allocator
- Add resource cursor support for drm buddy
v2(Matthew Auld):
- replace spinlock with mutex as we call kmem_cache_zalloc
(..., GFP_KERNEL) in drm_buddy_alloc() function
- lock drm_buddy_block_trim() function as it calls
mark_free/mark_split are all globally visible
v3(Matthew Auld):
- remove trim method error handling as we address the failure case
at drm_buddy_block_trim() function
v4:
- fix warnings reported by kernel test robot <lkp@intel.com>
v5:
- fix merge conflict issue
v6:
- fix warnings reported by kernel test robot <lkp@intel.com>
v7:
- remove DRM_BUDDY_RANGE_ALLOCATION flag usage
v8:
- keep DRM_BUDDY_RANGE_ALLOCATION flag usage
- resolve conflicts created by drm/amdgpu: remove VRAM accounting v2
v9(Christian):
- merged the below patch
- drm/amdgpu: move vram inline functions into a header
- rename label name as fallback
- move struct amdgpu_vram_mgr to amdgpu_vram_mgr.h
- remove unnecessary flags from struct amdgpu_vram_reservation
- rewrite block NULL check condition
- change else style as per coding standard
- rewrite the node max size
- add a helper function to fetch the first entry from the list
v10(Christian):
- rename amdgpu_get_node() function name as amdgpu_vram_mgr_first_block
v11:
- if size is not aligned with min_page_size, enable is_contiguous flag,
therefore, the size round up to the power of two and trimmed to the
original size.
v12:
- rename the function names having prefix as amdgpu_vram_mgr_*()
- modify the round_up() logic conforming to contiguous flag enablement
or if size is not aligned to min_block_size
- modify the trim logic
- rename node as block wherever applicable
Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220407224843.2416-1-Arunpravin.PaneerSelvam@amd.com
Signed-off-by: Christian König <christian.koenig@amd.com>
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/* SPDX-License-Identifier: MIT
|
|
* Copyright 2021 Advanced Micro Devices, Inc.
|
|
*
|
|
* 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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 __AMDGPU_VRAM_MGR_H__
|
|
#define __AMDGPU_VRAM_MGR_H__
|
|
|
|
#include <drm/drm_buddy.h>
|
|
|
|
struct amdgpu_vram_mgr {
|
|
struct ttm_resource_manager manager;
|
|
struct drm_buddy mm;
|
|
/* protects access to buffer objects */
|
|
struct mutex lock;
|
|
struct list_head reservations_pending;
|
|
struct list_head reserved_pages;
|
|
atomic64_t vis_usage;
|
|
u64 default_page_size;
|
|
};
|
|
|
|
struct amdgpu_vram_mgr_resource {
|
|
struct ttm_resource base;
|
|
struct list_head blocks;
|
|
unsigned long flags;
|
|
};
|
|
|
|
static inline u64 amdgpu_vram_mgr_block_start(struct drm_buddy_block *block)
|
|
{
|
|
return drm_buddy_block_offset(block);
|
|
}
|
|
|
|
static inline u64 amdgpu_vram_mgr_block_size(struct drm_buddy_block *block)
|
|
{
|
|
return PAGE_SIZE << drm_buddy_block_order(block);
|
|
}
|
|
|
|
static inline struct drm_buddy_block *
|
|
amdgpu_vram_mgr_first_block(struct list_head *list)
|
|
{
|
|
return list_first_entry_or_null(list, struct drm_buddy_block, link);
|
|
}
|
|
|
|
static inline bool amdgpu_is_vram_mgr_blocks_contiguous(struct list_head *head)
|
|
{
|
|
struct drm_buddy_block *block;
|
|
u64 start, size;
|
|
|
|
block = amdgpu_vram_mgr_first_block(head);
|
|
if (!block)
|
|
return false;
|
|
|
|
while (head != block->link.next) {
|
|
start = amdgpu_vram_mgr_block_start(block);
|
|
size = amdgpu_vram_mgr_block_size(block);
|
|
|
|
block = list_entry(block->link.next, struct drm_buddy_block, link);
|
|
if (start + size != amdgpu_vram_mgr_block_start(block))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static inline struct amdgpu_vram_mgr_resource *
|
|
to_amdgpu_vram_mgr_resource(struct ttm_resource *res)
|
|
{
|
|
return container_of(res, struct amdgpu_vram_mgr_resource, base);
|
|
}
|
|
|
|
#endif
|