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153 lines
3.4 KiB
Objective-C
153 lines
3.4 KiB
Objective-C
#-
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# SPDX-License-Identifier: BSD-2-Clause
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#:
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# Copyright (c) 2020 Ruslan Bukin <br@bsdpad.com>
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#
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# This software was developed by SRI International and the University of
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# Cambridge Computer Laboratory (Department of Computer Science and
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# Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
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# DARPA SSITH research programme.
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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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#
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#include "opt_platform.h"
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#include <sys/types.h>
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#include <sys/taskqueue.h>
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#include <sys/bus.h>
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#include <sys/sysctl.h>
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#include <sys/tree.h>
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#include <vm/vm.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/iommu/iommu.h>
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#ifdef FDT
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#include <dev/fdt/fdt_common.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#endif
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INTERFACE iommu;
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#
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# Check if the iommu controller dev is responsible to serve traffic
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# for a given child.
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#
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METHOD int find {
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device_t dev;
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device_t child;
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};
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#
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# Map a virtual address VA to a physical address PA.
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#
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METHOD int map {
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device_t dev;
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struct iommu_domain *iodom;
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vm_offset_t va;
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vm_page_t *ma;
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bus_size_t size;
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vm_prot_t prot;
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};
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#
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# Unmap a virtual address VA.
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#
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METHOD int unmap {
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device_t dev;
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struct iommu_domain *iodom;
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vm_offset_t va;
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bus_size_t size;
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};
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#
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# Allocate an IOMMU domain.
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#
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METHOD struct iommu_domain * domain_alloc {
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device_t dev;
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struct iommu_unit *iommu;
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};
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#
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# Release all the resources held by IOMMU domain.
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#
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METHOD void domain_free {
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device_t dev;
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struct iommu_domain *iodom;
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};
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#
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# Find a domain allocated for a dev.
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#
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METHOD struct iommu_domain * domain_lookup {
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device_t dev;
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};
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#
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# Find an allocated context for a device.
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#
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METHOD struct iommu_ctx * ctx_lookup {
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device_t dev;
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device_t child;
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};
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#
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# Allocate a new iommu context.
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#
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METHOD struct iommu_ctx * ctx_alloc {
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device_t dev;
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struct iommu_domain *iodom;
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device_t child;
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bool disabled;
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};
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#
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# Initialize the new iommu context.
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#
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METHOD int ctx_init {
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device_t dev;
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struct iommu_ctx *ioctx;
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};
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#
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# Free the iommu context.
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#
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METHOD void ctx_free {
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device_t dev;
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struct iommu_ctx *ioctx;
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};
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#ifdef FDT
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#
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# Notify controller we have machine-dependent data.
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#
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METHOD int ofw_md_data {
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device_t dev;
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struct iommu_ctx *ioctx;
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pcell_t *cells;
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int ncells;
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};
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#endif
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