/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Support for Medifield PNW Camera Imaging ISP subsystem.
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*
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* Copyright (c) 2010 Intel Corporation. All Rights Reserved.
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*
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* Copyright (c) 2010 Silicon Hive www.siliconhive.com.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 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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*
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*/
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#ifndef __HMM_H__
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#define __HMM_H__
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/mm.h>
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#include "hmm/hmm_pool.h"
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#include "ia_css_types.h"
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#define mmgr_NULL ((ia_css_ptr)0)
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#define mmgr_EXCEPTION ((ia_css_ptr) - 1)
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int hmm_pool_register(unsigned int pool_size, enum hmm_pool_type pool_type);
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void hmm_pool_unregister(enum hmm_pool_type pool_type);
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int hmm_init(void);
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void hmm_cleanup(void);
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ia_css_ptr hmm_alloc(size_t bytes, enum hmm_bo_type type,
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int from_highmem, const void __user *userptr,
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const uint16_t attrs);
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void hmm_free(ia_css_ptr ptr);
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int hmm_load(ia_css_ptr virt, void *data, unsigned int bytes);
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int hmm_store(ia_css_ptr virt, const void *data, unsigned int bytes);
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int hmm_set(ia_css_ptr virt, int c, unsigned int bytes);
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int hmm_flush(ia_css_ptr virt, unsigned int bytes);
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/*
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* get kernel memory physical address from ISP virtual address.
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*/
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phys_addr_t hmm_virt_to_phys(ia_css_ptr virt);
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/*
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* map ISP memory starts with virt to kernel virtual address
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* by using vmap. return NULL if failed.
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*
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* virt must be the start address of ISP memory (return by hmm_alloc),
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* do not pass any other address.
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*/
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void *hmm_vmap(ia_css_ptr virt, bool cached);
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void hmm_vunmap(ia_css_ptr virt);
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/*
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* flush the cache for the vmapped buffer.
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* if the buffer has not been vmapped, return directly.
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*/
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void hmm_flush_vmap(ia_css_ptr virt);
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/*
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* Address translation from ISP shared memory address to kernel virtual address
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* if the memory is not vmmaped, then do it.
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*/
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void *hmm_isp_vaddr_to_host_vaddr(ia_css_ptr ptr, bool cached);
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/*
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* Address translation from kernel virtual address to ISP shared memory address
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*/
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ia_css_ptr hmm_host_vaddr_to_hrt_vaddr(const void *ptr);
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/*
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* map ISP memory starts with virt to specific vma.
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*
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* used for mmap operation.
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*
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* virt must be the start address of ISP memory (return by hmm_alloc),
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* do not pass any other address.
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*/
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int hmm_mmap(struct vm_area_struct *vma, ia_css_ptr virt);
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/* show memory statistic
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*/
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void hmm_show_mem_stat(const char *func, const int line);
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/* init memory statistic
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*/
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void hmm_init_mem_stat(int res_pgnr, int dyc_en, int dyc_pgnr);
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extern bool dypool_enable;
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extern unsigned int dypool_pgnr;
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extern struct hmm_bo_device bo_device;
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#endif
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