89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
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/*-
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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 work was supported by Innovate UK project 105694, "Digital Security
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* by Design (DSbD) Technology Platform Prototype".
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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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#include "opt_platform.h"
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/bitstring.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/tree.h>
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#include <sys/taskqueue.h>
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#include <sys/sysctl.h>
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#include <vm/vm.h>
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#include <vm/pmap.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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#include "smmuvar.h"
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struct smmu_quirk_entry {
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uint16_t vendor;
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uint16_t device;
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const char *name;
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uint8_t event_id;
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uintptr_t input_address;
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};
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/* List of events that are known and will be silenced. */
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static const struct smmu_quirk_entry smmu_quirk_table[] = {
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{ 0x10ec, 0x8168, "RealTek 8168/8111", 0x10 /* F_TRANSLATION */, 0x0 },
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{ 0, 0, NULL, 0, 0 },
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};
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bool
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smmu_quirks_check(device_t dev, u_int sid, uint8_t event_id,
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uintptr_t input_addr)
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{
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const struct smmu_quirk_entry *q;
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struct smmu_ctx *ctx;
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int i;
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ctx = smmu_ctx_lookup_by_sid(dev, sid);
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if (!ctx)
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return (false);
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for (i = 0; smmu_quirk_table[i].vendor != 0; i++) {
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q = &smmu_quirk_table[i];
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if (ctx->vendor == q->vendor &&
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ctx->device == q->device &&
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input_addr == q->input_address &&
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event_id == q->event_id)
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return (true);
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}
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return (false);
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}
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