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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/riscv/iommu/iommu_pmap.h
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/*-

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 * SPDX-License-Identifier: BSD-2-Clause

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 *

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 * Copyright (c) 2026 Ruslan Bukin <[email protected]>

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 *

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 * Redistribution and use in source and binary forms, with or without

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 * modification, are permitted provided that the following conditions

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 * are met:

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 * 1. Redistributions of source code must retain the above copyright

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 *    notice, this list of conditions and the following disclaimer.

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 * 2. Redistributions in binary form must reproduce the above copyright

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 *    notice, this list of conditions and the following disclaimer in the

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 *    documentation and/or other materials provided with the distribution.

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 *

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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

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 * SUCH DAMAGE.

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 */

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#ifndef	_RISCV_IOMMU_IOMMU_PMAP_H_

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#define	_RISCV_IOMMU_IOMMU_PMAP_H_

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struct riscv_iommu_pmap {

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	pd_entry_t	*pm_top;

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	enum pmap_mode	pm_mode;

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	uint64_t	pm_satp;

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	struct mtx	pm_mtx;

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#ifdef INVARIANTS

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	long		sp_resident_count;

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#endif

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};

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int iommu_pmap_enter(struct riscv_iommu_pmap *pmap, vm_offset_t va,

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    vm_paddr_t pa, vm_prot_t prot, u_int flags);

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int iommu_pmap_remove(struct riscv_iommu_pmap *pmap, vm_offset_t va);

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void iommu_pmap_remove_pages(struct riscv_iommu_pmap *pmap);

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int iommu_pmap_pinit(struct riscv_iommu_pmap *pmap, enum pmap_mode pm_mode);

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void iommu_pmap_release(struct riscv_iommu_pmap *pmap);

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void iommu_pmap_remove_pages(struct riscv_iommu_pmap *pmap);

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#endif /* !_RISCV_IOMMU_IOMMU_PMAP_H_ */

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