880d405719
git-subtree-dir: qcom/opensource/graphics-kernel git-subtree-mainline:992813d9c1git-subtree-split:b4fdc4c042Change-Id: repo: https://git.codelinaro.org/clo/la/platform/vendor/qcom/opensource/graphics-kernel tag: GRAPHICS.LA.14.0.r1-07700-lanai.0
101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2016-2017,2019,2021 The Linux Foundation. All rights reserved.
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* Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
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*/
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#ifndef __KGSL_POOL_H
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#define __KGSL_POOL_H
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#ifdef CONFIG_QCOM_KGSL_USE_SHMEM
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static inline void kgsl_probe_page_pools(void) { }
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static inline void kgsl_exit_page_pools(void) { }
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static inline u32 kgsl_get_page_size(size_t size, unsigned int align)
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{
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u32 page_size;
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for (page_size = rounddown_pow_of_two(size); page_size > PAGE_SIZE; page_size >>= 1)
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if ((align >= ilog2(page_size)) && (size >= page_size))
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return page_size;
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return PAGE_SIZE;
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}
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static inline int kgsl_pool_page_count_get(void *data, u64 *val)
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{
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return 0;
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}
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static inline int kgsl_pool_reserved_get(void *data, u64 *val)
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{
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return 0;
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}
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static inline int kgsl_pool_size_total(void)
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{
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return 0;
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}
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#else
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/**
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* kgsl_pool_free_page - Frees the page and adds it back to pool/system memory
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* @page: Pointer to page struct that needs to be freed
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*/
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void kgsl_pool_free_page(struct page *page);
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/**
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* kgsl_get_page_size - Get supported pagesize
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* @size: Size of the page
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* @align: Desired alignment of the size
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*
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* Return largest available page size from pools that can be used to meet
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* given size and alignment requirements
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*/
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u32 kgsl_get_page_size(size_t size, unsigned int align);
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/**
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* kgsl_pool_alloc_page - Allocate a page of requested size
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* @page_size: Size of the page to be allocated
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* @pages: pointer to hold list of pages, should be big enough to hold
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* requested page
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* @len: Length of array pages
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*
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* Return total page count on success and negative value on failure
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*/
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int kgsl_pool_alloc_page(int *page_size, struct page **pages,
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unsigned int pages_len, unsigned int *align,
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struct device *dev);
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/**
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* kgsl_pool_free_pages - Free pages in an pages array
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* @pages: pointer to an array of page structs
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* @page_count: Number of entries in @pages
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*
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* Free the pages by collapsing any physical adjacent pages.
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* Pages are added back to the pool, if pool has sufficient space
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* otherwise they are given back to system.
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*/
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void kgsl_pool_free_pages(struct page **pages, unsigned int page_count);
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/* Debugfs node functions */
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int kgsl_pool_reserved_get(void *data, u64 *val);
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int kgsl_pool_page_count_get(void *data, u64 *val);
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/**
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* kgsl_pool_size_total - Return the number of pages in all kgsl page pools
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*/
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int kgsl_pool_size_total(void);
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/**
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* kgsl_probe_page_pools - Initialize the memory pools
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*/
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void kgsl_probe_page_pools(void);
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/**
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* kgsl_exit_page_pools - Free outstanding pooled memory
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*/
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void kgsl_exit_page_pools(void);
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#endif
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#endif /* __KGSL_POOL_H */
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