intel_quirks.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2013, 2015 The FreeBSD Foundation
    5  *
    6  * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
    7  * under sponsorship from the FreeBSD Foundation.
    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 <sys/cdefs.h>
   32 __FBSDID("$FreeBSD$");
   33 
   34 #include <sys/param.h>
   35 #include <sys/bus.h>
   36 #include <sys/kernel.h>
   37 #include <sys/lock.h>
   38 #include <sys/malloc.h>
   39 #include <sys/memdesc.h>
   40 #include <sys/module.h>
   41 #include <sys/mutex.h>
   42 #include <sys/rman.h>
   43 #include <sys/rwlock.h>
   44 #include <sys/smp.h>
   45 #include <sys/taskqueue.h>
   46 #include <sys/tree.h>
   47 #include <sys/vmem.h>
   48 #include <vm/vm.h>
   49 #include <vm/vm_extern.h>
   50 #include <vm/vm_kern.h>
   51 #include <vm/vm_object.h>
   52 #include <vm/vm_page.h>
   53 #include <vm/vm_pager.h>
   54 #include <vm/vm_map.h>
   55 #include <contrib/dev/acpica/include/acpi.h>
   56 #include <contrib/dev/acpica/include/accommon.h>
   57 #include <dev/acpica/acpivar.h>
   58 #include <dev/pci/pcireg.h>
   59 #include <dev/pci/pcivar.h>
   60 #include <machine/bus.h>
   61 #include <x86/include/busdma_impl.h>
   62 #include <dev/iommu/busdma_iommu.h>
   63 #include <x86/iommu/intel_reg.h>
   64 #include <x86/iommu/intel_dmar.h>
   65 
   66 typedef void (*dmar_quirk_cpu_fun)(struct dmar_unit *);
   67 
   68 struct intel_dmar_quirk_cpu {
   69         u_int ext_family;
   70         u_int ext_model;
   71         u_int family_code;
   72         u_int model;
   73         u_int stepping;
   74         dmar_quirk_cpu_fun quirk;
   75         const char *descr;
   76 };
   77 
   78 typedef void (*dmar_quirk_nb_fun)(struct dmar_unit *, device_t nb);
   79 
   80 struct intel_dmar_quirk_nb {
   81         u_int dev_id;
   82         u_int rev_no;
   83         dmar_quirk_nb_fun quirk;
   84         const char *descr;
   85 };
   86 
   87 #define QUIRK_NB_ALL_REV        0xffffffff
   88 
   89 static void
   90 dmar_match_quirks(struct dmar_unit *dmar,
   91     const struct intel_dmar_quirk_nb *nb_quirks, int nb_quirks_len,
   92     const struct intel_dmar_quirk_cpu *cpu_quirks, int cpu_quirks_len)
   93 {
   94         device_t nb;
   95         const struct intel_dmar_quirk_nb *nb_quirk;
   96         const struct intel_dmar_quirk_cpu *cpu_quirk;
   97         u_int p[4];
   98         u_int dev_id, rev_no;
   99         u_int ext_family, ext_model, family_code, model, stepping;
  100         int i;
  101 
  102         if (nb_quirks != NULL) {
  103                 nb = pci_find_bsf(0, 0, 0);
  104                 if (nb != NULL) {
  105                         dev_id = pci_get_device(nb);
  106                         rev_no = pci_get_revid(nb);
  107                         for (i = 0; i < nb_quirks_len; i++) {
  108                                 nb_quirk = &nb_quirks[i];
  109                                 if (nb_quirk->dev_id == dev_id &&
  110                                     (nb_quirk->rev_no == rev_no ||
  111                                     nb_quirk->rev_no == QUIRK_NB_ALL_REV)) {
  112                                         if (bootverbose) {
  113                                                 device_printf(dmar->dev,
  114                                                     "NB IOMMU quirk %s\n",
  115                                                     nb_quirk->descr);
  116                                         }
  117                                         nb_quirk->quirk(dmar, nb);
  118                                 }
  119                         }
  120                 } else {
  121                         device_printf(dmar->dev, "cannot find northbridge\n");
  122                 }
  123         }
  124         if (cpu_quirks != NULL) {
  125                 do_cpuid(1, p);
  126                 ext_family = (p[0] & CPUID_EXT_FAMILY) >> 20;
  127                 ext_model = (p[0] & CPUID_EXT_MODEL) >> 16;
  128                 family_code = (p[0] & CPUID_FAMILY) >> 8;
  129                 model = (p[0] & CPUID_MODEL) >> 4;
  130                 stepping = p[0] & CPUID_STEPPING;
  131                 for (i = 0; i < cpu_quirks_len; i++) {
  132                         cpu_quirk = &cpu_quirks[i];
  133                         if (cpu_quirk->ext_family == ext_family &&
  134                             cpu_quirk->ext_model == ext_model &&
  135                             cpu_quirk->family_code == family_code &&
  136                             cpu_quirk->model == model &&
  137                             (cpu_quirk->stepping == -1 ||
  138                             cpu_quirk->stepping == stepping)) {
  139                                 if (bootverbose) {
  140                                         device_printf(dmar->dev,
  141                                             "CPU IOMMU quirk %s\n",
  142                                             cpu_quirk->descr);
  143                                 }
  144                                 cpu_quirk->quirk(dmar);
  145                         }
  146                 }
  147         }
  148 }
  149 
  150 static void
  151 nb_5400_no_low_high_prot_mem(struct dmar_unit *unit, device_t nb __unused)
  152 {
  153 
  154         unit->hw_cap &= ~(DMAR_CAP_PHMR | DMAR_CAP_PLMR);
  155 }
  156 
  157 static void
  158 nb_no_ir(struct dmar_unit *unit, device_t nb __unused)
  159 {
  160 
  161         unit->hw_ecap &= ~(DMAR_ECAP_IR | DMAR_ECAP_EIM);
  162 }
  163 
  164 static void
  165 nb_5500_no_ir_rev13(struct dmar_unit *unit, device_t nb)
  166 {
  167         u_int rev_no;
  168 
  169         rev_no = pci_get_revid(nb);
  170         if (rev_no <= 0x13)
  171                 nb_no_ir(unit, nb);
  172 }
  173 
  174 static const struct intel_dmar_quirk_nb pre_use_nb[] = {
  175         {
  176             .dev_id = 0x4001, .rev_no = 0x20,
  177             .quirk = nb_5400_no_low_high_prot_mem,
  178             .descr = "5400 E23" /* no low/high protected memory */
  179         },
  180         {
  181             .dev_id = 0x4003, .rev_no = 0x20,
  182             .quirk = nb_5400_no_low_high_prot_mem,
  183             .descr = "5400 E23" /* no low/high protected memory */
  184         },
  185         {
  186             .dev_id = 0x3403, .rev_no = QUIRK_NB_ALL_REV,
  187             .quirk = nb_5500_no_ir_rev13,
  188             .descr = "5500 E47, E53" /* interrupt remapping does not work */
  189         },
  190         {
  191             .dev_id = 0x3405, .rev_no = QUIRK_NB_ALL_REV,
  192             .quirk = nb_5500_no_ir_rev13,
  193             .descr = "5500 E47, E53" /* interrupt remapping does not work */
  194         },
  195         {
  196             .dev_id = 0x3405, .rev_no = 0x22,
  197             .quirk = nb_no_ir,
  198             .descr = "5500 E47, E53" /* interrupt remapping does not work */
  199         },
  200         {
  201             .dev_id = 0x3406, .rev_no = QUIRK_NB_ALL_REV,
  202             .quirk = nb_5500_no_ir_rev13,
  203             .descr = "5500 E47, E53" /* interrupt remapping does not work */
  204         },
  205 };
  206 
  207 static void
  208 cpu_e5_am9(struct dmar_unit *unit)
  209 {
  210 
  211         unit->hw_cap &= ~(0x3fULL << 48);
  212         unit->hw_cap |= (9ULL << 48);
  213 }
  214 
  215 static const struct intel_dmar_quirk_cpu post_ident_cpu[] = {
  216         {
  217             .ext_family = 0, .ext_model = 2, .family_code = 6, .model = 13,
  218             .stepping = 6, .quirk = cpu_e5_am9,
  219             .descr = "E5 BT176" /* AM should be at most 9 */
  220         },
  221 };
  222 
  223 void
  224 dmar_quirks_pre_use(struct iommu_unit *unit)
  225 {
  226         struct dmar_unit *dmar;
  227 
  228         dmar = IOMMU2DMAR(unit);
  229 
  230         if (!dmar_barrier_enter(dmar, DMAR_BARRIER_USEQ))
  231                 return;
  232         DMAR_LOCK(dmar);
  233         dmar_match_quirks(dmar, pre_use_nb, nitems(pre_use_nb),
  234             NULL, 0);
  235         dmar_barrier_exit(dmar, DMAR_BARRIER_USEQ);
  236 }
  237 
  238 void
  239 dmar_quirks_post_ident(struct dmar_unit *dmar)
  240 {
  241 
  242         dmar_match_quirks(dmar, NULL, 0, post_ident_cpu,
  243             nitems(post_ident_cpu));
  244 }

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FreeBSD/Linux Kernel Cross Reference sys/x86/iommu/intel_quirks.c

FreeBSD/Linux Kernel Cross Reference
sys/x86/iommu/intel_quirks.c