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