2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2013, 2015 The FreeBSD Foundation
7 * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
8 * under sponsorship from the FreeBSD Foundation.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/param.h>
37 #include <sys/kernel.h>
39 #include <sys/malloc.h>
40 #include <sys/memdesc.h>
41 #include <sys/module.h>
43 #include <sys/rwlock.h>
45 #include <sys/taskqueue.h>
48 #include <machine/bus.h>
49 #include <contrib/dev/acpica/include/acpi.h>
50 #include <contrib/dev/acpica/include/accommon.h>
51 #include <dev/acpica/acpivar.h>
53 #include <vm/vm_extern.h>
54 #include <vm/vm_kern.h>
55 #include <vm/vm_object.h>
56 #include <vm/vm_page.h>
57 #include <vm/vm_pager.h>
58 #include <vm/vm_map.h>
59 #include <x86/include/busdma_impl.h>
60 #include <x86/iommu/intel_reg.h>
61 #include <x86/iommu/busdma_dmar.h>
62 #include <x86/iommu/intel_dmar.h>
63 #include <dev/pci/pcivar.h>
65 typedef void (*dmar_quirk_cpu_fun)(struct dmar_unit *);
67 struct intel_dmar_quirk_cpu {
73 dmar_quirk_cpu_fun quirk;
77 typedef void (*dmar_quirk_nb_fun)(struct dmar_unit *, device_t nb);
79 struct intel_dmar_quirk_nb {
82 dmar_quirk_nb_fun quirk;
86 #define QUIRK_NB_ALL_REV 0xffffffff
89 dmar_match_quirks(struct dmar_unit *dmar,
90 const struct intel_dmar_quirk_nb *nb_quirks, int nb_quirks_len,
91 const struct intel_dmar_quirk_cpu *cpu_quirks, int cpu_quirks_len)
94 const struct intel_dmar_quirk_nb *nb_quirk;
95 const struct intel_dmar_quirk_cpu *cpu_quirk;
98 u_int ext_family, ext_model, family_code, model, stepping;
101 if (nb_quirks != NULL) {
102 nb = pci_find_bsf(0, 0, 0);
104 dev_id = pci_get_device(nb);
105 rev_no = pci_get_revid(nb);
106 for (i = 0; i < nb_quirks_len; i++) {
107 nb_quirk = &nb_quirks[i];
108 if (nb_quirk->dev_id == dev_id &&
109 (nb_quirk->rev_no == rev_no ||
110 nb_quirk->rev_no == QUIRK_NB_ALL_REV)) {
112 device_printf(dmar->dev,
113 "NB IOMMU quirk %s\n",
116 nb_quirk->quirk(dmar, nb);
120 device_printf(dmar->dev, "cannot find northbridge\n");
123 if (cpu_quirks != NULL) {
125 ext_family = (p[0] & CPUID_EXT_FAMILY) >> 20;
126 ext_model = (p[0] & CPUID_EXT_MODEL) >> 16;
127 family_code = (p[0] & CPUID_FAMILY) >> 8;
128 model = (p[0] & CPUID_MODEL) >> 4;
129 stepping = p[0] & CPUID_STEPPING;
130 for (i = 0; i < cpu_quirks_len; i++) {
131 cpu_quirk = &cpu_quirks[i];
132 if (cpu_quirk->ext_family == ext_family &&
133 cpu_quirk->ext_model == ext_model &&
134 cpu_quirk->family_code == family_code &&
135 cpu_quirk->model == model &&
136 (cpu_quirk->stepping == -1 ||
137 cpu_quirk->stepping == stepping)) {
139 device_printf(dmar->dev,
140 "CPU IOMMU quirk %s\n",
143 cpu_quirk->quirk(dmar);
150 nb_5400_no_low_high_prot_mem(struct dmar_unit *unit, device_t nb __unused)
153 unit->hw_cap &= ~(DMAR_CAP_PHMR | DMAR_CAP_PLMR);
157 nb_no_ir(struct dmar_unit *unit, device_t nb __unused)
160 unit->hw_ecap &= ~(DMAR_ECAP_IR | DMAR_ECAP_EIM);
164 nb_5500_no_ir_rev13(struct dmar_unit *unit, device_t nb)
168 rev_no = pci_get_revid(nb);
173 static const struct intel_dmar_quirk_nb pre_use_nb[] = {
175 .dev_id = 0x4001, .rev_no = 0x20,
176 .quirk = nb_5400_no_low_high_prot_mem,
177 .descr = "5400 E23" /* no low/high protected memory */
180 .dev_id = 0x4003, .rev_no = 0x20,
181 .quirk = nb_5400_no_low_high_prot_mem,
182 .descr = "5400 E23" /* no low/high protected memory */
185 .dev_id = 0x3403, .rev_no = QUIRK_NB_ALL_REV,
186 .quirk = nb_5500_no_ir_rev13,
187 .descr = "5500 E47, E53" /* interrupt remapping does not work */
190 .dev_id = 0x3405, .rev_no = QUIRK_NB_ALL_REV,
191 .quirk = nb_5500_no_ir_rev13,
192 .descr = "5500 E47, E53" /* interrupt remapping does not work */
195 .dev_id = 0x3405, .rev_no = 0x22,
197 .descr = "5500 E47, E53" /* interrupt remapping does not work */
200 .dev_id = 0x3406, .rev_no = QUIRK_NB_ALL_REV,
201 .quirk = nb_5500_no_ir_rev13,
202 .descr = "5500 E47, E53" /* interrupt remapping does not work */
207 cpu_e5_am9(struct dmar_unit *unit)
210 unit->hw_cap &= ~(0x3fULL << 48);
211 unit->hw_cap |= (9ULL << 48);
214 static const struct intel_dmar_quirk_cpu post_ident_cpu[] = {
216 .ext_family = 0, .ext_model = 2, .family_code = 6, .model = 13,
217 .stepping = 6, .quirk = cpu_e5_am9,
218 .descr = "E5 BT176" /* AM should be at most 9 */
223 dmar_quirks_pre_use(struct dmar_unit *dmar)
226 if (!dmar_barrier_enter(dmar, DMAR_BARRIER_USEQ))
229 dmar_match_quirks(dmar, pre_use_nb, nitems(pre_use_nb),
231 dmar_barrier_exit(dmar, DMAR_BARRIER_USEQ);
235 dmar_quirks_post_ident(struct dmar_unit *dmar)
238 dmar_match_quirks(dmar, NULL, 0, post_ident_cpu,
239 nitems(post_ident_cpu));