// SPDX-License-Identifier: GPL-2.0
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/*
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* Support for Merrifield PNW Camera Imaging ISP subsystem.
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*
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* Copyright (c) 2012 Intel Corporation. All Rights Reserved.
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*
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* Copyright (c) 2012 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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#include "type_support.h"
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#include "mmu/isp_mmu.h"
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#include "mmu/sh_mmu_mrfld.h"
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#include "atomisp_compat.h"
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#define MERR_VALID_PTE_MASK 0x80000000
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/*
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* include SH header file here
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*/
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static unsigned int sh_phys_to_pte(struct isp_mmu *mmu,
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phys_addr_t phys)
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{
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return phys >> ISP_PAGE_OFFSET;
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}
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static phys_addr_t sh_pte_to_phys(struct isp_mmu *mmu,
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unsigned int pte)
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{
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unsigned int mask = mmu->driver->pte_valid_mask;
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return (phys_addr_t)((pte & ~mask) << ISP_PAGE_OFFSET);
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}
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static unsigned int sh_get_pd_base(struct isp_mmu *mmu,
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phys_addr_t phys)
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{
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unsigned int pte = sh_phys_to_pte(mmu, phys);
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return HOST_ADDRESS(pte);
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}
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/*
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* callback to flush tlb.
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*
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* tlb_flush_range will at least flush TLBs containing
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* address mapping from addr to addr + size.
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*
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* tlb_flush_all will flush all TLBs.
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*
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* tlb_flush_all is must be provided. if tlb_flush_range is
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* not valid, it will set to tlb_flush_all by default.
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*/
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static void sh_tlb_flush(struct isp_mmu *mmu)
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{
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ia_css_mmu_invalidate_cache();
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}
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struct isp_mmu_client sh_mmu_mrfld = {
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.name = "Silicon Hive ISP3000 MMU",
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.pte_valid_mask = MERR_VALID_PTE_MASK,
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.null_pte = ~MERR_VALID_PTE_MASK,
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.get_pd_base = sh_get_pd_base,
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.tlb_flush_all = sh_tlb_flush,
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.phys_to_pte = sh_phys_to_pte,
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.pte_to_phys = sh_pte_to_phys,
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};
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