64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
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/* Copyright (c) 2011, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _LINUX_MEMALLOC_H
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#define _LINUX_MEMALLOC_H
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#include <linux/mutex.h>
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#include <linux/genalloc.h>
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#include <linux/rbtree.h>
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struct mem_pool {
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struct mutex pool_mutex;
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struct gen_pool *gpool;
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phys_addr_t paddr;
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unsigned long size;
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unsigned long free;
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unsigned int id;
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};
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struct alloc {
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struct rb_node rb_node;
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/*
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* The physical address may be used for lookup in the tree so the
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* 'virtual address' needs to be able to accomodate larger physical
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* addresses.
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*/
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phys_addr_t vaddr;
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phys_addr_t paddr;
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struct mem_pool *mpool;
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unsigned long len;
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void *caller;
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};
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struct mem_pool *initialize_memory_pool(phys_addr_t start,
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unsigned long size, int mem_type);
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void *allocate_contiguous_memory(unsigned long size,
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int mem_type, unsigned long align, int cached);
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phys_addr_t _allocate_contiguous_memory_nomap(unsigned long size,
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int mem_type, unsigned long align, void *caller);
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phys_addr_t allocate_contiguous_memory_nomap(unsigned long size,
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int mem_type, unsigned long align);
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void free_contiguous_memory(void *addr);
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void free_contiguous_memory_by_paddr(phys_addr_t paddr);
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phys_addr_t memory_pool_node_paddr(void *vaddr);
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unsigned long memory_pool_node_len(void *vaddr);
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int memory_pool_init(void);
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#endif /* _LINUX_MEMALLOC_H */
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