intel_quirks.c

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    1 /*-
    2  * Copyright (c) 2013, 2015 The FreeBSD Foundation
    3  * All rights reserved.
    4  *
    5  * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
    6  * under sponsorship from the FreeBSD Foundation.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD$");
   32 
   33 #include <sys/param.h>
   34 #include <sys/bus.h>
   35 #include <sys/kernel.h>
   36 #include <sys/lock.h>
   37 #include <sys/malloc.h>
   38 #include <sys/memdesc.h>
   39 #include <sys/module.h>
   40 #include <sys/rman.h>
   41 #include <sys/rwlock.h>
   42 #include <sys/smp.h>
   43 #include <sys/taskqueue.h>
   44 #include <sys/tree.h>
   45 #include <sys/vmem.h>
   46 #include <machine/bus.h>
   47 #include <contrib/dev/acpica/include/acpi.h>
   48 #include <contrib/dev/acpica/include/accommon.h>
   49 #include <dev/acpica/acpivar.h>
   50 #include <vm/vm.h>
   51 #include <vm/vm_extern.h>
   52 #include <vm/vm_kern.h>
   53 #include <vm/vm_object.h>
   54 #include <vm/vm_page.h>
   55 #include <vm/vm_pager.h>
   56 #include <vm/vm_map.h>
   57 #include <x86/include/busdma_impl.h>
   58 #include <x86/iommu/intel_reg.h>
   59 #include <x86/iommu/busdma_dmar.h>
   60 #include <x86/iommu/intel_dmar.h>
   61 #include <dev/pci/pcivar.h>
   62 
   63 typedef void (*dmar_quirk_cpu_fun)(struct dmar_unit *);
   64 
   65 struct intel_dmar_quirk_cpu {
   66         u_int ext_family;
   67         u_int ext_model;
   68         u_int family_code;
   69         u_int model;
   70         u_int stepping;
   71         dmar_quirk_cpu_fun quirk;
   72         const char *descr;
   73 };
   74 
   75 typedef void (*dmar_quirk_nb_fun)(struct dmar_unit *, device_t nb);
   76 
   77 struct intel_dmar_quirk_nb {
   78         u_int dev_id;
   79         u_int rev_no;
   80         dmar_quirk_nb_fun quirk;
   81         const char *descr;
   82 };
   83 
   84 #define QUIRK_NB_ALL_REV        0xffffffff
   85 
   86 static void
   87 dmar_match_quirks(struct dmar_unit *dmar,
   88     const struct intel_dmar_quirk_nb *nb_quirks, int nb_quirks_len,
   89     const struct intel_dmar_quirk_cpu *cpu_quirks, int cpu_quirks_len)
   90 {
   91         device_t nb;
   92         const struct intel_dmar_quirk_nb *nb_quirk;
   93         const struct intel_dmar_quirk_cpu *cpu_quirk;
   94         u_int p[4];
   95         u_int dev_id, rev_no;
   96         u_int ext_family, ext_model, family_code, model, stepping;
   97         int i;
   98 
   99         if (nb_quirks != NULL) {
  100                 nb = pci_find_bsf(0, 0, 0);
  101                 if (nb != NULL) {
  102                         dev_id = pci_get_device(nb);
  103                         rev_no = pci_get_revid(nb);
  104                         for (i = 0; i < nb_quirks_len; i++) {
  105                                 nb_quirk = &nb_quirks[i];
  106                                 if (nb_quirk->dev_id == dev_id &&
  107                                     (nb_quirk->rev_no == rev_no ||
  108                                     nb_quirk->rev_no == QUIRK_NB_ALL_REV)) {
  109                                         if (bootverbose) {
  110                                                 device_printf(dmar->dev,
  111                                                     "NB IOMMU quirk %s\n",
  112                                                     nb_quirk->descr);
  113                                         }
  114                                         nb_quirk->quirk(dmar, nb);
  115                                 }
  116                         }
  117                 } else {
  118                         device_printf(dmar->dev, "cannot find northbridge\n");
  119                 }
  120         }
  121         if (cpu_quirks != NULL) {
  122                 do_cpuid(1, p);
  123                 ext_family = (p[0] & CPUID_EXT_FAMILY) >> 20;
  124                 ext_model = (p[0] & CPUID_EXT_MODEL) >> 16;
  125                 family_code = (p[0] & CPUID_FAMILY) >> 8;
  126                 model = (p[0] & CPUID_MODEL) >> 4;
  127                 stepping = p[0] & CPUID_STEPPING;
  128                 for (i = 0; i < cpu_quirks_len; i++) {
  129                         cpu_quirk = &cpu_quirks[i];
  130                         if (cpu_quirk->ext_family == ext_family &&
  131                             cpu_quirk->ext_model == ext_model &&
  132                             cpu_quirk->family_code == family_code &&
  133                             cpu_quirk->model == model &&
  134                             (cpu_quirk->stepping == -1 ||
  135                             cpu_quirk->stepping == stepping)) {
  136                                 if (bootverbose) {
  137                                         device_printf(dmar->dev,
  138                                             "CPU IOMMU quirk %s\n",
  139                                             cpu_quirk->descr);
  140                                 }
  141                                 cpu_quirk->quirk(dmar);
  142                         }
  143                 }
  144         }
  145 }
  146 
  147 static void
  148 nb_5400_no_low_high_prot_mem(struct dmar_unit *unit, device_t nb __unused)
  149 {
  150 
  151         unit->hw_cap &= ~(DMAR_CAP_PHMR | DMAR_CAP_PLMR);
  152 }
  153 
  154 static void
  155 nb_no_ir(struct dmar_unit *unit, device_t nb __unused)
  156 {
  157 
  158         unit->hw_ecap &= ~(DMAR_ECAP_IR | DMAR_ECAP_EIM);
  159 }
  160 
  161 static void
  162 nb_5500_no_ir_rev13(struct dmar_unit *unit, device_t nb)
  163 {
  164         u_int rev_no;
  165 
  166         rev_no = pci_get_revid(nb);
  167         if (rev_no <= 0x13)
  168                 nb_no_ir(unit, nb);
  169 }
  170 
  171 static const struct intel_dmar_quirk_nb pre_use_nb[] = {
  172         {
  173             .dev_id = 0x4001, .rev_no = 0x20,
  174             .quirk = nb_5400_no_low_high_prot_mem,
  175             .descr = "5400 E23" /* no low/high protected memory */
  176         },
  177         {
  178             .dev_id = 0x4003, .rev_no = 0x20,
  179             .quirk = nb_5400_no_low_high_prot_mem,
  180             .descr = "5400 E23" /* no low/high protected memory */
  181         },
  182         {
  183             .dev_id = 0x3403, .rev_no = QUIRK_NB_ALL_REV,
  184             .quirk = nb_5500_no_ir_rev13,
  185             .descr = "5500 E47, E53" /* interrupt remapping does not work */
  186         },
  187         {
  188             .dev_id = 0x3405, .rev_no = QUIRK_NB_ALL_REV,
  189             .quirk = nb_5500_no_ir_rev13,
  190             .descr = "5500 E47, E53" /* interrupt remapping does not work */
  191         },
  192         {
  193             .dev_id = 0x3405, .rev_no = 0x22,
  194             .quirk = nb_no_ir,
  195             .descr = "5500 E47, E53" /* interrupt remapping does not work */
  196         },
  197         {
  198             .dev_id = 0x3406, .rev_no = QUIRK_NB_ALL_REV,
  199             .quirk = nb_5500_no_ir_rev13,
  200             .descr = "5500 E47, E53" /* interrupt remapping does not work */
  201         },
  202 };
  203 
  204 static void
  205 cpu_e5_am9(struct dmar_unit *unit)
  206 {
  207 
  208         unit->hw_cap &= ~(0x3fULL << 48);
  209         unit->hw_cap |= (9ULL << 48);
  210 }
  211 
  212 static const struct intel_dmar_quirk_cpu post_ident_cpu[] = {
  213         {
  214             .ext_family = 0, .ext_model = 2, .family_code = 6, .model = 13,
  215             .stepping = 6, .quirk = cpu_e5_am9,
  216             .descr = "E5 BT176" /* AM should be at most 9 */
  217         },
  218 };
  219 
  220 void
  221 dmar_quirks_pre_use(struct dmar_unit *dmar)
  222 {
  223 
  224         if (!dmar_barrier_enter(dmar, DMAR_BARRIER_USEQ))
  225                 return;
  226         DMAR_LOCK(dmar);
  227         dmar_match_quirks(dmar, pre_use_nb, nitems(pre_use_nb),
  228             NULL, 0);
  229         dmar_barrier_exit(dmar, DMAR_BARRIER_USEQ);
  230 }
  231 
  232 void
  233 dmar_quirks_post_ident(struct dmar_unit *dmar)
  234 {
  235 
  236         dmar_match_quirks(dmar, NULL, 0, post_ident_cpu,
  237             nitems(post_ident_cpu));
  238 }

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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