1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2020 Ruslan Bukin <br@bsdpad.com> 5 * 6 * This work was supported by Innovate UK project 105694, "Digital Security 7 * by Design (DSbD) Technology Platform Prototype". 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include "opt_platform.h" 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <sys/param.h> 37 #include <sys/bitstring.h> 38 #include <sys/systm.h> 39 #include <sys/bus.h> 40 #include <sys/kernel.h> 41 #include <sys/tree.h> 42 #include <sys/taskqueue.h> 43 #include <sys/sysctl.h> 44 #include <vm/vm.h> 45 #include <vm/pmap.h> 46 #include <dev/pci/pcireg.h> 47 #include <dev/pci/pcivar.h> 48 #include <dev/iommu/iommu.h> 49 50 #include "smmuvar.h" 51 52 struct smmu_quirk_entry { 53 uint16_t vendor; 54 uint16_t device; 55 const char *name; 56 uint8_t event_id; 57 uintptr_t input_address; 58 }; 59 60 /* List of events that are known and will be silenced. */ 61 static const struct smmu_quirk_entry smmu_quirk_table[] = { 62 { 0x10ec, 0x8168, "RealTek 8168/8111", 0x10 /* F_TRANSLATION */, 0x0 }, 63 { 0, 0, NULL, 0, 0 }, 64 }; 65 66 bool 67 smmu_quirks_check(device_t dev, u_int sid, uint8_t event_id, 68 uintptr_t input_addr) 69 { 70 const struct smmu_quirk_entry *q; 71 struct smmu_ctx *ctx; 72 int i; 73 74 ctx = smmu_ctx_lookup_by_sid(dev, sid); 75 if (!ctx) 76 return (false); 77 78 for (i = 0; smmu_quirk_table[i].vendor != 0; i++) { 79 q = &smmu_quirk_table[i]; 80 if (ctx->vendor == q->vendor && 81 ctx->device == q->device && 82 input_addr == q->input_address && 83 event_id == q->event_id) 84 return (true); 85 } 86 87 return (false); 88 } 89