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/* SPDX-License-Identifier: GPL-2.0 */
/*
* 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.
*
*
*/
#ifndef __HMM_H__
#define __HMM_H__
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include "hmm_common.h"
#include "hmm/hmm_bo.h"
#include "ia_css_types.h"
#define mmgr_NULL ((ia_css_ptr)0)
#define mmgr_EXCEPTION ((ia_css_ptr) - 1)
int hmm_init(void);
void hmm_cleanup(void);
ia_css_ptr hmm_alloc(size_t bytes);
ia_css_ptr hmm_create_from_userdata(size_t bytes, const void __user *userptr);
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);
/*
* 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);
extern struct hmm_bo_device bo_device;
#endif
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