Differential D24618 Diff 75375 sys/arm64/iommu/iommu_if.m

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sys/arm64/iommu/iommu_if.m

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				#-
				# SPDX-License-Identifier: BSD-2-Clause
				#:
				# Copyright (c) 2020 Ruslan Bukin <br@bsdpad.com>
				#
				# This software was developed by SRI International and the University of
				# Cambridge Computer Laboratory (Department of Computer Science and
				# Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
				# DARPA SSITH research programme.
				#
				# Redistribution and use in source and binary forms, with or without
				# modification, are permitted provided that the following conditions
				# are met:
				# 1. Redistributions of source code must retain the above copyright
				# notice, this list of conditions and the following disclaimer.
				# 2. Redistributions in binary form must reproduce the above copyright
				# notice, this list of conditions and the following disclaimer in the
				# documentation and/or other materials provided with the distribution.
				#
				# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
				# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
				# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
				# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
				# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
				# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
				# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
				# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
				# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
				# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
				# SUCH DAMAGE.
				#
				# $FreeBSD$
				#

				#include <vm/vm.h>

				#include <sys/types.h>
				#include <sys/taskqueue.h>
				#include <sys/bus.h>
				#include <sys/sysctl.h>
				#include <sys/tree.h>
				#include <sys/mutex.h>
				#include <vm/vm.h>
				#include <vm/pmap.h>
				#include <dev/pci/pcireg.h>
				#include <dev/pci/pcivar.h>
				#include <dev/iommu/iommu.h>

				#include <arm64/iommu/iommu.h>

				INTERFACE iommu;

				#
				# Map a virtual address VA to a physical address PA.
				#
				METHOD int map {
				device_t dev;
				struct smmu_domain *domain;
				vm_offset_t va;
				vm_paddr_t pa;
				bus_size_t size;
				vm_prot_t prot;
				};

				#
				# Unmap a virtual address VA.
				#
				METHOD int unmap {
				device_t dev;
				struct smmu_domain *domain;
				vm_offset_t va;
				bus_size_t size;
				};

				#
				# Allocate an IOMMU domain.
				#
				METHOD struct smmu_domain * domain_alloc {
				device_t dev;
				};

				#
				# Release all the resources held by IOMMU domain.
				#
				METHOD int domain_free {
				device_t dev;
				struct smmu_domain *domain;
				};

				#
				# Attach a consumer device to a IOMMU domain.
				#
				METHOD int ctx_attach {
				device_t dev;
				struct smmu_domain *domain;
				struct smmu_ctx *ctx;
				};

				#
				# Detach a consumer device from IOMMU domain.
				#
				METHOD int ctx_detach {
				device_t dev;
				struct smmu_ctx *ctx;
				};