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/*
* Support for Medifield PNW Camera Imaging ISP subsystem.
*
* Copyright (c) 2010 Intel Corporation. All Rights Reserved.
*
* Copyright (c) 2010 Silicon Hive www.siliconhive.com.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
*/
#ifndef __HMM_H__
#define __HMM_H__
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include "hmm/hmm_pool.h"
#include "ia_css_types.h"
#define HMM_CACHED true
#define HMM_UNCACHED false
int hmm_pool_register(unsigned int pool_size, enum hmm_pool_type pool_type);
void hmm_pool_unregister(enum hmm_pool_type pool_type);
int hmm_init(void);
void hmm_cleanup(void);
ia_css_ptr hmm_alloc(size_t bytes, enum hmm_bo_type type,
int from_highmem, void *userptr, bool cached);
void hmm_free(ia_css_ptr ptr);
int hmm_load(ia_css_ptr virt, void *data, unsigned int bytes);
int hmm_store(ia_css_ptr virt, const void *data, unsigned int bytes);
int hmm_set(ia_css_ptr virt, int c, unsigned int bytes);
int hmm_flush(ia_css_ptr virt, unsigned int bytes);
/*
* get kernel memory physical address from ISP virtual address.
*/
phys_addr_t hmm_virt_to_phys(ia_css_ptr virt);
/*
* map ISP memory starts with virt to kernel virtual address
* by using vmap. return NULL if failed.
*
* virt must be the start address of ISP memory (return by hmm_alloc),
* do not pass any other address.
*/
void *hmm_vmap(ia_css_ptr virt, bool cached);
void hmm_vunmap(ia_css_ptr virt);
/*
* flush the cache for the vmapped buffer.
* if the buffer has not been vmapped, return directly.
*/
void hmm_flush_vmap(ia_css_ptr virt);
/*
* Address translation from ISP shared memory address to kernel virtual address
* if the memory is not vmmaped, then do it.
*/
void *hmm_isp_vaddr_to_host_vaddr(ia_css_ptr ptr, bool cached);
/*
* Address translation from kernel virtual address to ISP shared memory address
*/
ia_css_ptr hmm_host_vaddr_to_hrt_vaddr(const void *ptr);
/*
* map ISP memory starts with virt to specific vma.
*
* used for mmap operation.
*
* virt must be the start address of ISP memory (return by hmm_alloc),
* do not pass any other address.
*/
int hmm_mmap(struct vm_area_struct *vma, ia_css_ptr virt);
/* show memory statistic
*/
void hmm_show_mem_stat(const char *func, const int line);
/* init memory statistic
*/
void hmm_init_mem_stat(int res_pgnr, int dyc_en, int dyc_pgnr);
extern bool dypool_enable;
extern unsigned int dypool_pgnr;
extern struct hmm_bo_device bo_device;
#endif
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