The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/aic7xxx/aic7xxx_pci.c

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    1 /*-
    2  * Product specific probe and attach routines for:
    3  *      3940, 2940, aic7895, aic7890, aic7880,
    4  *      aic7870, aic7860 and aic7850 SCSI controllers
    5  *
    6  * SPDX-License-Identifier: BSD-3-Clause
    7  *
    8  * Copyright (c) 1994-2001 Justin T. Gibbs.
    9  * Copyright (c) 2000-2001 Adaptec Inc.
   10  * All rights reserved.
   11  *
   12  * Redistribution and use in source and binary forms, with or without
   13  * modification, are permitted provided that the following conditions
   14  * are met:
   15  * 1. Redistributions of source code must retain the above copyright
   16  *    notice, this list of conditions, and the following disclaimer,
   17  *    without modification.
   18  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
   19  *    substantially similar to the "NO WARRANTY" disclaimer below
   20  *    ("Disclaimer") and any redistribution must be conditioned upon
   21  *    including a substantially similar Disclaimer requirement for further
   22  *    binary redistribution.
   23  * 3. Neither the names of the above-listed copyright holders nor the names
   24  *    of any contributors may be used to endorse or promote products derived
   25  *    from this software without specific prior written permission.
   26  *
   27  * Alternatively, this software may be distributed under the terms of the
   28  * GNU General Public License ("GPL") version 2 as published by the Free
   29  * Software Foundation.
   30  *
   31  * NO WARRANTY
   32  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   33  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   34  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
   35  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   36  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   37  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   38  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   39  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   40  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
   41  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   42  * POSSIBILITY OF SUCH DAMAGES.
   43  *
   44  * $Id: //depot/aic7xxx/aic7xxx/aic7xxx_pci.c#78 $
   45  */
   46 
   47 #ifdef __linux__
   48 #include "aic7xxx_osm.h"
   49 #include "aic7xxx_inline.h"
   50 #include "aic7xxx_93cx6.h"
   51 #else
   52 #include <sys/cdefs.h>
   53 __FBSDID("$FreeBSD$");
   54 #include <dev/aic7xxx/aic7xxx_osm.h>
   55 #include <dev/aic7xxx/aic7xxx_inline.h>
   56 #include <dev/aic7xxx/aic7xxx_93cx6.h>
   57 #endif
   58 
   59 static __inline uint64_t
   60 ahc_compose_id(u_int device, u_int vendor, u_int subdevice, u_int subvendor)
   61 {
   62         uint64_t id;
   63 
   64         id = subvendor
   65            | (subdevice << 16)
   66            | ((uint64_t)vendor << 32)
   67            | ((uint64_t)device << 48);
   68 
   69         return (id);
   70 }
   71 
   72 #define ID_ALL_MASK                     0xFFFFFFFFFFFFFFFFull
   73 #define ID_DEV_VENDOR_MASK              0xFFFFFFFF00000000ull
   74 #define ID_9005_GENERIC_MASK            0xFFF0FFFF00000000ull
   75 #define ID_9005_SISL_MASK               0x000FFFFF00000000ull
   76 #define ID_9005_SISL_ID                 0x0005900500000000ull
   77 #define ID_AIC7850                      0x5078900400000000ull
   78 #define ID_AHA_2902_04_10_15_20C_30C    0x5078900478509004ull
   79 #define ID_AIC7855                      0x5578900400000000ull
   80 #define ID_AIC7859                      0x3860900400000000ull
   81 #define ID_AHA_2930CU                   0x3860900438699004ull
   82 #define ID_AIC7860                      0x6078900400000000ull
   83 #define ID_AIC7860C                     0x6078900478609004ull
   84 #define ID_AHA_1480A                    0x6075900400000000ull
   85 #define ID_AHA_2940AU_0                 0x6178900400000000ull
   86 #define ID_AHA_2940AU_1                 0x6178900478619004ull
   87 #define ID_AHA_2940AU_CN                0x2178900478219004ull
   88 #define ID_AHA_2930C_VAR                0x6038900438689004ull
   89 
   90 #define ID_AIC7870                      0x7078900400000000ull
   91 #define ID_AHA_2940                     0x7178900400000000ull
   92 #define ID_AHA_3940                     0x7278900400000000ull
   93 #define ID_AHA_398X                     0x7378900400000000ull
   94 #define ID_AHA_2944                     0x7478900400000000ull
   95 #define ID_AHA_3944                     0x7578900400000000ull
   96 #define ID_AHA_4944                     0x7678900400000000ull
   97 
   98 #define ID_AIC7880                      0x8078900400000000ull
   99 #define ID_AIC7880_B                    0x8078900478809004ull
  100 #define ID_AHA_2940U                    0x8178900400000000ull
  101 #define ID_AHA_3940U                    0x8278900400000000ull
  102 #define ID_AHA_2944U                    0x8478900400000000ull
  103 #define ID_AHA_3944U                    0x8578900400000000ull
  104 #define ID_AHA_398XU                    0x8378900400000000ull
  105 #define ID_AHA_4944U                    0x8678900400000000ull
  106 #define ID_AHA_2940UB                   0x8178900478819004ull
  107 #define ID_AHA_2930U                    0x8878900478889004ull
  108 #define ID_AHA_2940U_PRO                0x8778900478879004ull
  109 #define ID_AHA_2940U_CN                 0x0078900478009004ull
  110 
  111 #define ID_AIC7895                      0x7895900478959004ull
  112 #define ID_AIC7895_ARO                  0x7890900478939004ull
  113 #define ID_AIC7895_ARO_MASK             0xFFF0FFFFFFFFFFFFull
  114 #define ID_AHA_2940U_DUAL               0x7895900478919004ull
  115 #define ID_AHA_3940AU                   0x7895900478929004ull
  116 #define ID_AHA_3944AU                   0x7895900478949004ull
  117 
  118 #define ID_AIC7890                      0x001F9005000F9005ull
  119 #define ID_AIC7890_ARO                  0x00139005000F9005ull
  120 #define ID_AAA_131U2                    0x0013900500039005ull
  121 #define ID_AHA_2930U2                   0x0011900501819005ull
  122 #define ID_AHA_2940U2B                  0x00109005A1009005ull
  123 #define ID_AHA_2940U2_OEM               0x0010900521809005ull
  124 #define ID_AHA_2940U2                   0x00109005A1809005ull
  125 #define ID_AHA_2950U2B                  0x00109005E1009005ull
  126 
  127 #define ID_AIC7892                      0x008F9005FFFF9005ull
  128 #define ID_AIC7892_ARO                  0x00839005FFFF9005ull
  129 #define ID_AHA_29160                    0x00809005E2A09005ull
  130 #define ID_AHA_29160_CPQ                0x00809005E2A00E11ull
  131 #define ID_AHA_29160N                   0x0080900562A09005ull
  132 #define ID_AHA_29160C                   0x0080900562209005ull
  133 #define ID_AHA_29160B                   0x00809005E2209005ull
  134 #define ID_AHA_19160B                   0x0081900562A19005ull
  135 #define ID_AHA_2915_30LP                0x0082900502109005ull
  136 
  137 #define ID_AIC7896                      0x005F9005FFFF9005ull
  138 #define ID_AIC7896_ARO                  0x00539005FFFF9005ull
  139 #define ID_AHA_3950U2B_0                0x00509005FFFF9005ull
  140 #define ID_AHA_3950U2B_1                0x00509005F5009005ull
  141 #define ID_AHA_3950U2D_0                0x00519005FFFF9005ull
  142 #define ID_AHA_3950U2D_1                0x00519005B5009005ull
  143 
  144 #define ID_AIC7899                      0x00CF9005FFFF9005ull
  145 #define ID_AIC7899_ARO                  0x00C39005FFFF9005ull
  146 #define ID_AHA_3960D                    0x00C09005F6209005ull
  147 #define ID_AHA_3960D_CPQ                0x00C09005F6200E11ull
  148 
  149 #define ID_AIC7810                      0x1078900400000000ull
  150 #define ID_AIC7815                      0x7815900400000000ull
  151 
  152 #define DEVID_9005_TYPE(id) ((id) & 0xF)
  153 #define         DEVID_9005_TYPE_HBA             0x0     /* Standard Card */
  154 #define         DEVID_9005_TYPE_AAA             0x3     /* RAID Card */
  155 #define         DEVID_9005_TYPE_SISL            0x5     /* Container ROMB */
  156 #define         DEVID_9005_TYPE_MB              0xF     /* On Motherboard */
  157 
  158 #define DEVID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
  159 #define         DEVID_9005_MAXRATE_U160         0x0
  160 #define         DEVID_9005_MAXRATE_ULTRA2       0x1
  161 #define         DEVID_9005_MAXRATE_ULTRA        0x2
  162 #define         DEVID_9005_MAXRATE_FAST         0x3
  163 
  164 #define DEVID_9005_MFUNC(id) (((id) & 0x40) >> 6)
  165 
  166 #define DEVID_9005_CLASS(id) (((id) & 0xFF00) >> 8)
  167 #define         DEVID_9005_CLASS_SPI            0x0     /* Parallel SCSI */
  168 
  169 #define SUBID_9005_TYPE(id) ((id) & 0xF)
  170 #define         SUBID_9005_TYPE_MB              0xF     /* On Motherboard */
  171 #define         SUBID_9005_TYPE_CARD            0x0     /* Standard Card */
  172 #define         SUBID_9005_TYPE_LCCARD          0x1     /* Low Cost Card */
  173 #define         SUBID_9005_TYPE_RAID            0x3     /* Combined with Raid */
  174 
  175 #define SUBID_9005_TYPE_KNOWN(id)                       \
  176           ((((id) & 0xF) == SUBID_9005_TYPE_MB)         \
  177         || (((id) & 0xF) == SUBID_9005_TYPE_CARD)       \
  178         || (((id) & 0xF) == SUBID_9005_TYPE_LCCARD)     \
  179         || (((id) & 0xF) == SUBID_9005_TYPE_RAID))
  180 
  181 #define SUBID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
  182 #define         SUBID_9005_MAXRATE_ULTRA2       0x0
  183 #define         SUBID_9005_MAXRATE_ULTRA        0x1
  184 #define         SUBID_9005_MAXRATE_U160         0x2
  185 #define         SUBID_9005_MAXRATE_RESERVED     0x3
  186 
  187 #define SUBID_9005_SEEPTYPE(id)                                         \
  188         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
  189          ? ((id) & 0xC0) >> 6                                           \
  190          : ((id) & 0x300) >> 8)
  191 #define         SUBID_9005_SEEPTYPE_NONE        0x0
  192 #define         SUBID_9005_SEEPTYPE_1K          0x1
  193 #define         SUBID_9005_SEEPTYPE_2K_4K       0x2
  194 #define         SUBID_9005_SEEPTYPE_RESERVED    0x3
  195 #define SUBID_9005_AUTOTERM(id)                                         \
  196         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
  197          ? (((id) & 0x400) >> 10) == 0                                  \
  198          : (((id) & 0x40) >> 6) == 0)
  199 
  200 #define SUBID_9005_NUMCHAN(id)                                          \
  201         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
  202          ? ((id) & 0x300) >> 8                                          \
  203          : ((id) & 0xC00) >> 10)
  204 
  205 #define SUBID_9005_LEGACYCONN(id)                                       \
  206         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
  207          ? 0                                                            \
  208          : ((id) & 0x80) >> 7)
  209 
  210 #define SUBID_9005_MFUNCENB(id)                                         \
  211         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
  212          ? ((id) & 0x800) >> 11                                         \
  213          : ((id) & 0x1000) >> 12)
  214 /*
  215  * Informational only. Should use chip register to be
  216  * certain, but may be use in identification strings.
  217  */
  218 #define SUBID_9005_CARD_SCSIWIDTH_MASK  0x2000
  219 #define SUBID_9005_CARD_PCIWIDTH_MASK   0x4000
  220 #define SUBID_9005_CARD_SEDIFF_MASK     0x8000
  221 
  222 static ahc_device_setup_t ahc_aic785X_setup;
  223 static ahc_device_setup_t ahc_aic7860_setup;
  224 static ahc_device_setup_t ahc_apa1480_setup;
  225 static ahc_device_setup_t ahc_aic7870_setup;
  226 static ahc_device_setup_t ahc_aha394X_setup;
  227 static ahc_device_setup_t ahc_aha494X_setup;
  228 static ahc_device_setup_t ahc_aha398X_setup;
  229 static ahc_device_setup_t ahc_aic7880_setup;
  230 static ahc_device_setup_t ahc_aha2940Pro_setup;
  231 static ahc_device_setup_t ahc_aha394XU_setup;
  232 static ahc_device_setup_t ahc_aha398XU_setup;
  233 static ahc_device_setup_t ahc_aic7890_setup;
  234 static ahc_device_setup_t ahc_aic7892_setup;
  235 static ahc_device_setup_t ahc_aic7895_setup;
  236 static ahc_device_setup_t ahc_aic7896_setup;
  237 static ahc_device_setup_t ahc_aic7899_setup;
  238 static ahc_device_setup_t ahc_aha29160C_setup;
  239 static ahc_device_setup_t ahc_raid_setup;
  240 static ahc_device_setup_t ahc_aha394XX_setup;
  241 static ahc_device_setup_t ahc_aha494XX_setup;
  242 static ahc_device_setup_t ahc_aha398XX_setup;
  243 
  244 struct ahc_pci_identity ahc_pci_ident_table [] =
  245 {
  246         /* aic7850 based controllers */
  247         {
  248                 ID_AHA_2902_04_10_15_20C_30C,
  249                 ID_ALL_MASK,
  250                 "Adaptec 2902/04/10/15/20C/30C SCSI adapter",
  251                 ahc_aic785X_setup
  252         },
  253         /* aic7860 based controllers */
  254         {
  255                 ID_AHA_2930CU,
  256                 ID_ALL_MASK,
  257                 "Adaptec 2930CU SCSI adapter",
  258                 ahc_aic7860_setup
  259         },
  260         {
  261                 ID_AHA_1480A & ID_DEV_VENDOR_MASK,
  262                 ID_DEV_VENDOR_MASK,
  263                 "Adaptec 1480A Ultra SCSI adapter",
  264                 ahc_apa1480_setup
  265         },
  266         {
  267                 ID_AHA_2940AU_0 & ID_DEV_VENDOR_MASK,
  268                 ID_DEV_VENDOR_MASK,
  269                 "Adaptec 2940A Ultra SCSI adapter",
  270                 ahc_aic7860_setup
  271         },
  272         {
  273                 ID_AHA_2940AU_CN & ID_DEV_VENDOR_MASK,
  274                 ID_DEV_VENDOR_MASK,
  275                 "Adaptec 2940A/CN Ultra SCSI adapter",
  276                 ahc_aic7860_setup
  277         },
  278         {
  279                 ID_AHA_2930C_VAR & ID_DEV_VENDOR_MASK,
  280                 ID_DEV_VENDOR_MASK,
  281                 "Adaptec 2930C Ultra SCSI adapter (VAR)",
  282                 ahc_aic7860_setup
  283         },
  284         /* aic7870 based controllers */
  285         {
  286                 ID_AHA_2940,
  287                 ID_ALL_MASK,
  288                 "Adaptec 2940 SCSI adapter",
  289                 ahc_aic7870_setup
  290         },
  291         {
  292                 ID_AHA_3940,
  293                 ID_ALL_MASK,
  294                 "Adaptec 3940 SCSI adapter",
  295                 ahc_aha394X_setup
  296         },
  297         {
  298                 ID_AHA_398X,
  299                 ID_ALL_MASK,
  300                 "Adaptec 398X SCSI RAID adapter",
  301                 ahc_aha398X_setup
  302         },
  303         {
  304                 ID_AHA_2944,
  305                 ID_ALL_MASK,
  306                 "Adaptec 2944 SCSI adapter",
  307                 ahc_aic7870_setup
  308         },
  309         {
  310                 ID_AHA_3944,
  311                 ID_ALL_MASK,
  312                 "Adaptec 3944 SCSI adapter",
  313                 ahc_aha394X_setup
  314         },
  315         {
  316                 ID_AHA_4944,
  317                 ID_ALL_MASK,
  318                 "Adaptec 4944 SCSI adapter",
  319                 ahc_aha494X_setup
  320         },
  321         /* aic7880 based controllers */
  322         {
  323                 ID_AHA_2940U & ID_DEV_VENDOR_MASK,
  324                 ID_DEV_VENDOR_MASK,
  325                 "Adaptec 2940 Ultra SCSI adapter",
  326                 ahc_aic7880_setup
  327         },
  328         {
  329                 ID_AHA_3940U & ID_DEV_VENDOR_MASK,
  330                 ID_DEV_VENDOR_MASK,
  331                 "Adaptec 3940 Ultra SCSI adapter",
  332                 ahc_aha394XU_setup
  333         },
  334         {
  335                 ID_AHA_2944U & ID_DEV_VENDOR_MASK,
  336                 ID_DEV_VENDOR_MASK,
  337                 "Adaptec 2944 Ultra SCSI adapter",
  338                 ahc_aic7880_setup
  339         },
  340         {
  341                 ID_AHA_3944U & ID_DEV_VENDOR_MASK,
  342                 ID_DEV_VENDOR_MASK,
  343                 "Adaptec 3944 Ultra SCSI adapter",
  344                 ahc_aha394XU_setup
  345         },
  346         {
  347                 ID_AHA_398XU & ID_DEV_VENDOR_MASK,
  348                 ID_DEV_VENDOR_MASK,
  349                 "Adaptec 398X Ultra SCSI RAID adapter",
  350                 ahc_aha398XU_setup
  351         },
  352         {
  353                 /*
  354                  * XXX Don't know the slot numbers
  355                  * so we can't identify channels
  356                  */
  357                 ID_AHA_4944U & ID_DEV_VENDOR_MASK,
  358                 ID_DEV_VENDOR_MASK,
  359                 "Adaptec 4944 Ultra SCSI adapter",
  360                 ahc_aic7880_setup
  361         },
  362         {
  363                 ID_AHA_2930U & ID_DEV_VENDOR_MASK,
  364                 ID_DEV_VENDOR_MASK,
  365                 "Adaptec 2930 Ultra SCSI adapter",
  366                 ahc_aic7880_setup
  367         },
  368         {
  369                 ID_AHA_2940U_PRO & ID_DEV_VENDOR_MASK,
  370                 ID_DEV_VENDOR_MASK,
  371                 "Adaptec 2940 Pro Ultra SCSI adapter",
  372                 ahc_aha2940Pro_setup
  373         },
  374         {
  375                 ID_AHA_2940U_CN & ID_DEV_VENDOR_MASK,
  376                 ID_DEV_VENDOR_MASK,
  377                 "Adaptec 2940/CN Ultra SCSI adapter",
  378                 ahc_aic7880_setup
  379         },
  380         /* Ignore all SISL (AAC on MB) based controllers. */
  381         {
  382                 ID_9005_SISL_ID,
  383                 ID_9005_SISL_MASK,
  384                 NULL,
  385                 NULL
  386         },
  387         /* aic7890 based controllers */
  388         {
  389                 ID_AHA_2930U2,
  390                 ID_ALL_MASK,
  391                 "Adaptec 2930 Ultra2 SCSI adapter",
  392                 ahc_aic7890_setup
  393         },
  394         {
  395                 ID_AHA_2940U2B,
  396                 ID_ALL_MASK,
  397                 "Adaptec 2940B Ultra2 SCSI adapter",
  398                 ahc_aic7890_setup
  399         },
  400         {
  401                 ID_AHA_2940U2_OEM,
  402                 ID_ALL_MASK,
  403                 "Adaptec 2940 Ultra2 SCSI adapter (OEM)",
  404                 ahc_aic7890_setup
  405         },
  406         {
  407                 ID_AHA_2940U2,
  408                 ID_ALL_MASK,
  409                 "Adaptec 2940 Ultra2 SCSI adapter",
  410                 ahc_aic7890_setup
  411         },
  412         {
  413                 ID_AHA_2950U2B,
  414                 ID_ALL_MASK,
  415                 "Adaptec 2950 Ultra2 SCSI adapter",
  416                 ahc_aic7890_setup
  417         },
  418         {
  419                 ID_AIC7890_ARO,
  420                 ID_ALL_MASK,
  421                 "Adaptec aic7890/91 Ultra2 SCSI adapter (ARO)",
  422                 ahc_aic7890_setup
  423         },
  424         {
  425                 ID_AAA_131U2,
  426                 ID_ALL_MASK,
  427                 "Adaptec AAA-131 Ultra2 RAID adapter",
  428                 ahc_aic7890_setup
  429         },
  430         /* aic7892 based controllers */
  431         {
  432                 ID_AHA_29160,
  433                 ID_ALL_MASK,
  434                 "Adaptec 29160 Ultra160 SCSI adapter",
  435                 ahc_aic7892_setup
  436         },
  437         {
  438                 ID_AHA_29160_CPQ,
  439                 ID_ALL_MASK,
  440                 "Adaptec (Compaq OEM) 29160 Ultra160 SCSI adapter",
  441                 ahc_aic7892_setup
  442         },
  443         {
  444                 ID_AHA_29160N,
  445                 ID_ALL_MASK,
  446                 "Adaptec 29160N Ultra160 SCSI adapter",
  447                 ahc_aic7892_setup
  448         },
  449         {
  450                 ID_AHA_29160C,
  451                 ID_ALL_MASK,
  452                 "Adaptec 29160C Ultra160 SCSI adapter",
  453                 ahc_aha29160C_setup
  454         },
  455         {
  456                 ID_AHA_29160B,
  457                 ID_ALL_MASK,
  458                 "Adaptec 29160B Ultra160 SCSI adapter",
  459                 ahc_aic7892_setup
  460         },
  461         {
  462                 ID_AHA_19160B,
  463                 ID_ALL_MASK,
  464                 "Adaptec 19160B Ultra160 SCSI adapter",
  465                 ahc_aic7892_setup
  466         },
  467         {
  468                 ID_AIC7892_ARO,
  469                 ID_ALL_MASK,
  470                 "Adaptec aic7892 Ultra160 SCSI adapter (ARO)",
  471                 ahc_aic7892_setup
  472         },
  473         {
  474                 ID_AHA_2915_30LP,
  475                 ID_ALL_MASK,
  476                 "Adaptec 2915/30LP Ultra160 SCSI adapter",
  477                 ahc_aic7892_setup
  478         },
  479         /* aic7895 based controllers */ 
  480         {
  481                 ID_AHA_2940U_DUAL,
  482                 ID_ALL_MASK,
  483                 "Adaptec 2940/DUAL Ultra SCSI adapter",
  484                 ahc_aic7895_setup
  485         },
  486         {
  487                 ID_AHA_3940AU,
  488                 ID_ALL_MASK,
  489                 "Adaptec 3940A Ultra SCSI adapter",
  490                 ahc_aic7895_setup
  491         },
  492         {
  493                 ID_AHA_3944AU,
  494                 ID_ALL_MASK,
  495                 "Adaptec 3944A Ultra SCSI adapter",
  496                 ahc_aic7895_setup
  497         },
  498         {
  499                 ID_AIC7895_ARO,
  500                 ID_AIC7895_ARO_MASK,
  501                 "Adaptec aic7895 Ultra SCSI adapter (ARO)",
  502                 ahc_aic7895_setup
  503         },
  504         /* aic7896/97 based controllers */      
  505         {
  506                 ID_AHA_3950U2B_0,
  507                 ID_ALL_MASK,
  508                 "Adaptec 3950B Ultra2 SCSI adapter",
  509                 ahc_aic7896_setup
  510         },
  511         {
  512                 ID_AHA_3950U2B_1,
  513                 ID_ALL_MASK,
  514                 "Adaptec 3950B Ultra2 SCSI adapter",
  515                 ahc_aic7896_setup
  516         },
  517         {
  518                 ID_AHA_3950U2D_0,
  519                 ID_ALL_MASK,
  520                 "Adaptec 3950D Ultra2 SCSI adapter",
  521                 ahc_aic7896_setup
  522         },
  523         {
  524                 ID_AHA_3950U2D_1,
  525                 ID_ALL_MASK,
  526                 "Adaptec 3950D Ultra2 SCSI adapter",
  527                 ahc_aic7896_setup
  528         },
  529         {
  530                 ID_AIC7896_ARO,
  531                 ID_ALL_MASK,
  532                 "Adaptec aic7896/97 Ultra2 SCSI adapter (ARO)",
  533                 ahc_aic7896_setup
  534         },
  535         /* aic7899 based controllers */ 
  536         {
  537                 ID_AHA_3960D,
  538                 ID_ALL_MASK,
  539                 "Adaptec 3960D Ultra160 SCSI adapter",
  540                 ahc_aic7899_setup
  541         },
  542         {
  543                 ID_AHA_3960D_CPQ,
  544                 ID_ALL_MASK,
  545                 "Adaptec (Compaq OEM) 3960D Ultra160 SCSI adapter",
  546                 ahc_aic7899_setup
  547         },
  548         {
  549                 ID_AIC7899_ARO,
  550                 ID_ALL_MASK,
  551                 "Adaptec aic7899 Ultra160 SCSI adapter (ARO)",
  552                 ahc_aic7899_setup
  553         },
  554         /* Generic chip probes for devices we don't know 'exactly' */
  555         {
  556                 ID_AIC7850 & ID_DEV_VENDOR_MASK,
  557                 ID_DEV_VENDOR_MASK,
  558                 "Adaptec aic7850 SCSI adapter",
  559                 ahc_aic785X_setup
  560         },
  561         {
  562                 ID_AIC7855 & ID_DEV_VENDOR_MASK,
  563                 ID_DEV_VENDOR_MASK,
  564                 "Adaptec aic7855 SCSI adapter",
  565                 ahc_aic785X_setup
  566         },
  567         {
  568                 ID_AIC7859 & ID_DEV_VENDOR_MASK,
  569                 ID_DEV_VENDOR_MASK,
  570                 "Adaptec aic7859 SCSI adapter",
  571                 ahc_aic7860_setup
  572         },
  573         {
  574                 ID_AIC7860 & ID_DEV_VENDOR_MASK,
  575                 ID_DEV_VENDOR_MASK,
  576                 "Adaptec aic7860 Ultra SCSI adapter",
  577                 ahc_aic7860_setup
  578         },
  579         {
  580                 ID_AIC7870 & ID_DEV_VENDOR_MASK,
  581                 ID_DEV_VENDOR_MASK,
  582                 "Adaptec aic7870 SCSI adapter",
  583                 ahc_aic7870_setup
  584         },
  585         {
  586                 ID_AIC7880 & ID_DEV_VENDOR_MASK,
  587                 ID_DEV_VENDOR_MASK,
  588                 "Adaptec aic7880 Ultra SCSI adapter",
  589                 ahc_aic7880_setup
  590         },
  591         {
  592                 ID_AIC7890 & ID_9005_GENERIC_MASK,
  593                 ID_9005_GENERIC_MASK,
  594                 "Adaptec aic7890/91 Ultra2 SCSI adapter",
  595                 ahc_aic7890_setup
  596         },
  597         {
  598                 ID_AIC7892 & ID_9005_GENERIC_MASK,
  599                 ID_9005_GENERIC_MASK,
  600                 "Adaptec aic7892 Ultra160 SCSI adapter",
  601                 ahc_aic7892_setup
  602         },
  603         {
  604                 ID_AIC7895 & ID_DEV_VENDOR_MASK,
  605                 ID_DEV_VENDOR_MASK,
  606                 "Adaptec aic7895 Ultra SCSI adapter",
  607                 ahc_aic7895_setup
  608         },
  609         {
  610                 ID_AIC7896 & ID_9005_GENERIC_MASK,
  611                 ID_9005_GENERIC_MASK,
  612                 "Adaptec aic7896/97 Ultra2 SCSI adapter",
  613                 ahc_aic7896_setup
  614         },
  615         {
  616                 ID_AIC7899 & ID_9005_GENERIC_MASK,
  617                 ID_9005_GENERIC_MASK,
  618                 "Adaptec aic7899 Ultra160 SCSI adapter",
  619                 ahc_aic7899_setup
  620         },
  621         {
  622                 ID_AIC7810 & ID_DEV_VENDOR_MASK,
  623                 ID_DEV_VENDOR_MASK,
  624                 "Adaptec aic7810 RAID memory controller",
  625                 ahc_raid_setup
  626         },
  627         {
  628                 ID_AIC7815 & ID_DEV_VENDOR_MASK,
  629                 ID_DEV_VENDOR_MASK,
  630                 "Adaptec aic7815 RAID memory controller",
  631                 ahc_raid_setup
  632         }
  633 };
  634 
  635 const u_int ahc_num_pci_devs = NUM_ELEMENTS(ahc_pci_ident_table);
  636                 
  637 #define AHC_394X_SLOT_CHANNEL_A 4
  638 #define AHC_394X_SLOT_CHANNEL_B 5
  639 
  640 #define AHC_398X_SLOT_CHANNEL_A 4
  641 #define AHC_398X_SLOT_CHANNEL_B 8
  642 #define AHC_398X_SLOT_CHANNEL_C 12
  643 
  644 #define AHC_494X_SLOT_CHANNEL_A 4
  645 #define AHC_494X_SLOT_CHANNEL_B 5
  646 #define AHC_494X_SLOT_CHANNEL_C 6
  647 #define AHC_494X_SLOT_CHANNEL_D 7
  648 
  649 #define DEVCONFIG               0x40
  650 #define         PCIERRGENDIS    0x80000000ul
  651 #define         SCBSIZE32       0x00010000ul    /* aic789X only */
  652 #define         REXTVALID       0x00001000ul    /* ultra cards only */
  653 #define         MPORTMODE       0x00000400ul    /* aic7870+ only */
  654 #define         RAMPSM          0x00000200ul    /* aic7870+ only */
  655 #define         VOLSENSE        0x00000100ul
  656 #define         PCI64BIT        0x00000080ul    /* 64Bit PCI bus (Ultra2 Only)*/
  657 #define         SCBRAMSEL       0x00000080ul
  658 #define         MRDCEN          0x00000040ul
  659 #define         EXTSCBTIME      0x00000020ul    /* aic7870 only */
  660 #define         EXTSCBPEN       0x00000010ul    /* aic7870 only */
  661 #define         BERREN          0x00000008ul
  662 #define         DACEN           0x00000004ul
  663 #define         STPWLEVEL       0x00000002ul
  664 #define         DIFACTNEGEN     0x00000001ul    /* aic7870 only */
  665 
  666 #define CSIZE_LATTIME           0x0c
  667 #define         CACHESIZE       0x0000003ful    /* only 5 bits */
  668 #define         LATTIME         0x0000ff00ul
  669 
  670 /* PCI STATUS definitions */
  671 #define DPE     0x80
  672 #define SSE     0x40
  673 #define RMA     0x20
  674 #define RTA     0x10
  675 #define STA     0x08
  676 #define DPR     0x01
  677 
  678 static int ahc_9005_subdevinfo_valid(uint16_t device, uint16_t vendor,
  679                                      uint16_t subdevice, uint16_t subvendor);
  680 static int ahc_ext_scbram_present(struct ahc_softc *ahc);
  681 static void ahc_scbram_config(struct ahc_softc *ahc, int enable,
  682                                   int pcheck, int fast, int large);
  683 static void ahc_probe_ext_scbram(struct ahc_softc *ahc);
  684 static void check_extport(struct ahc_softc *ahc, u_int *sxfrctl1);
  685 static void ahc_parse_pci_eeprom(struct ahc_softc *ahc,
  686                                  struct seeprom_config *sc);
  687 static void configure_termination(struct ahc_softc *ahc,
  688                                   struct seeprom_descriptor *sd,
  689                                   u_int adapter_control,
  690                                   u_int *sxfrctl1);
  691 
  692 static void ahc_new_term_detect(struct ahc_softc *ahc,
  693                                 int *enableSEC_low,
  694                                 int *enableSEC_high,
  695                                 int *enablePRI_low,
  696                                 int *enablePRI_high,
  697                                 int *eeprom_present);
  698 static void aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
  699                                  int *internal68_present,
  700                                  int *externalcable_present,
  701                                  int *eeprom_present);
  702 static void aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
  703                                  int *externalcable_present,
  704                                  int *eeprom_present);
  705 static void    write_brdctl(struct ahc_softc *ahc, uint8_t value);
  706 static uint8_t read_brdctl(struct ahc_softc *ahc);
  707 static void ahc_pci_intr(struct ahc_softc *ahc);
  708 static int  ahc_pci_chip_init(struct ahc_softc *ahc);
  709 static int  ahc_pci_suspend(struct ahc_softc *ahc);
  710 static int  ahc_pci_resume(struct ahc_softc *ahc);
  711 
  712 static int
  713 ahc_9005_subdevinfo_valid(uint16_t device, uint16_t vendor,
  714                           uint16_t subdevice, uint16_t subvendor)
  715 {
  716         int result;
  717 
  718         /* Default to invalid. */
  719         result = 0;
  720         if (vendor == 0x9005
  721          && subvendor == 0x9005
  722          && subdevice != device
  723          && SUBID_9005_TYPE_KNOWN(subdevice) != 0) {
  724                 switch (SUBID_9005_TYPE(subdevice)) {
  725                 case SUBID_9005_TYPE_MB:
  726                         break;
  727                 case SUBID_9005_TYPE_CARD:
  728                 case SUBID_9005_TYPE_LCCARD:
  729                         /*
  730                          * Currently only trust Adaptec cards to
  731                          * get the sub device info correct.
  732                          */
  733                         if (DEVID_9005_TYPE(device) == DEVID_9005_TYPE_HBA)
  734                                 result = 1;
  735                         break;
  736                 case SUBID_9005_TYPE_RAID:
  737                         break;
  738                 default:
  739                         break;
  740                 }
  741         }
  742         return (result);
  743 }
  744 
  745 struct ahc_pci_identity *
  746 ahc_find_pci_device(aic_dev_softc_t pci)
  747 {
  748         uint64_t  full_id;
  749         uint16_t  device;
  750         uint16_t  vendor;
  751         uint16_t  subdevice;
  752         uint16_t  subvendor;
  753         struct    ahc_pci_identity *entry;
  754         u_int     i;
  755 
  756         vendor = aic_pci_read_config(pci, PCIR_DEVVENDOR, /*bytes*/2);
  757         device = aic_pci_read_config(pci, PCIR_DEVICE, /*bytes*/2);
  758         subvendor = aic_pci_read_config(pci, PCIR_SUBVEND_0, /*bytes*/2);
  759         subdevice = aic_pci_read_config(pci, PCIR_SUBDEV_0, /*bytes*/2);
  760         full_id = ahc_compose_id(device, vendor, subdevice, subvendor);
  761 
  762         /*
  763          * If the second function is not hooked up, ignore it.
  764          * Unfortunately, not all MB vendors implement the
  765          * subdevice ID as per the Adaptec spec, so do our best
  766          * to sanity check it prior to accepting the subdevice
  767          * ID as valid.
  768          */
  769         if (aic_get_pci_function(pci) > 0
  770          && ahc_9005_subdevinfo_valid(device, vendor, subdevice, subvendor)
  771          && SUBID_9005_MFUNCENB(subdevice) == 0)
  772                 return (NULL);
  773 
  774         for (i = 0; i < ahc_num_pci_devs; i++) {
  775                 entry = &ahc_pci_ident_table[i];
  776                 if (entry->full_id == (full_id & entry->id_mask)) {
  777                         /* Honor exclusion entries. */
  778                         if (entry->name == NULL)
  779                                 return (NULL);
  780                         return (entry);
  781                 }
  782         }
  783         return (NULL);
  784 }
  785 
  786 int
  787 ahc_pci_config(struct ahc_softc *ahc, struct ahc_pci_identity *entry)
  788 {
  789         u_int    command;
  790         u_int    our_id;
  791         u_int    sxfrctl1;
  792         u_int    scsiseq;
  793         u_int    dscommand0;
  794         uint32_t devconfig;
  795         int      error;
  796         uint8_t  sblkctl;
  797 
  798         our_id = 0;
  799         error = entry->setup(ahc);
  800         if (error != 0)
  801                 return (error);
  802         ahc->chip |= AHC_PCI;
  803         ahc->description = entry->name;
  804 
  805         aic_power_state_change(ahc, AIC_POWER_STATE_D0);
  806 
  807         error = ahc_pci_map_registers(ahc);
  808         if (error != 0)
  809                 return (error);
  810 
  811         /*
  812          * Before we continue probing the card, ensure that
  813          * its interrupts are *disabled*.  We don't want
  814          * a misstep to hang the machine in an interrupt
  815          * storm.
  816          */
  817         ahc_intr_enable(ahc, FALSE);
  818 
  819         devconfig = aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
  820 
  821         /*
  822          * If we need to support high memory, enable dual
  823          * address cycles.  This bit must be set to enable
  824          * high address bit generation even if we are on a
  825          * 64bit bus (PCI64BIT set in devconfig).
  826          */
  827         if ((ahc->flags & AHC_39BIT_ADDRESSING) != 0) {
  828                 if (bootverbose)
  829                         printf("%s: Enabling 39Bit Addressing\n",
  830                                ahc_name(ahc));
  831                 devconfig |= DACEN;
  832         }
  833 
  834         /* Ensure that pci error generation, a test feature, is disabled. */
  835         devconfig |= PCIERRGENDIS;
  836 
  837         aic_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
  838 
  839         /* Ensure busmastering is enabled */
  840         command = aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
  841         command |= PCIM_CMD_BUSMASTEREN;
  842 
  843         aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND, command, /*bytes*/2);
  844 
  845         /* On all PCI adapters, we allow SCB paging */
  846         ahc->flags |= AHC_PAGESCBS;
  847 
  848         error = ahc_softc_init(ahc);
  849         if (error != 0)
  850                 return (error);
  851 
  852         /*
  853          * Disable PCI parity error checking.  Users typically
  854          * do this to work around broken PCI chipsets that get
  855          * the parity timing wrong and thus generate lots of spurious
  856          * errors.  The chip only allows us to disable *all* parity
  857          * error reporting when doing this, so CIO bus, scb ram, and
  858          * scratch ram parity errors will be ignored too.
  859          */
  860         if ((ahc->flags & AHC_DISABLE_PCI_PERR) != 0)
  861                 ahc->seqctl |= FAILDIS;
  862 
  863         ahc->bus_intr = ahc_pci_intr;
  864         ahc->bus_chip_init = ahc_pci_chip_init;
  865         ahc->bus_suspend = ahc_pci_suspend;
  866         ahc->bus_resume = ahc_pci_resume;
  867 
  868         /* Remember how the card was setup in case there is no SEEPROM */
  869         if ((ahc_inb(ahc, HCNTRL) & POWRDN) == 0) {
  870                 ahc_pause(ahc);
  871                 if ((ahc->features & AHC_ULTRA2) != 0)
  872                         our_id = ahc_inb(ahc, SCSIID_ULTRA2) & OID;
  873                 else
  874                         our_id = ahc_inb(ahc, SCSIID) & OID;
  875                 sxfrctl1 = ahc_inb(ahc, SXFRCTL1) & STPWEN;
  876                 scsiseq = ahc_inb(ahc, SCSISEQ);
  877         } else {
  878                 sxfrctl1 = STPWEN;
  879                 our_id = 7;
  880                 scsiseq = 0;
  881         }
  882 
  883         error = ahc_reset(ahc, /*reinit*/FALSE);
  884         if (error != 0)
  885                 return (ENXIO);
  886 
  887         if ((ahc->features & AHC_DT) != 0) {
  888                 u_int sfunct;
  889 
  890                 /* Perform ALT-Mode Setup */
  891                 sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
  892                 ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
  893                 ahc_outb(ahc, OPTIONMODE,
  894                          OPTIONMODE_DEFAULTS|AUTOACKEN|BUSFREEREV|EXPPHASEDIS);
  895                 ahc_outb(ahc, SFUNCT, sfunct);
  896 
  897                 /* Normal mode setup */
  898                 ahc_outb(ahc, CRCCONTROL1, CRCVALCHKEN|CRCENDCHKEN|CRCREQCHKEN
  899                                           |TARGCRCENDEN);
  900         }
  901 
  902         dscommand0 = ahc_inb(ahc, DSCOMMAND0);
  903         dscommand0 |= MPARCKEN|CACHETHEN;
  904         if ((ahc->features & AHC_ULTRA2) != 0) {
  905                 /*
  906                  * DPARCKEN doesn't work correctly on
  907                  * some MBs so don't use it.
  908                  */
  909                 dscommand0 &= ~DPARCKEN;
  910         }
  911 
  912         /*
  913          * Handle chips that must have cache line
  914          * streaming (dis/en)abled.
  915          */
  916         if ((ahc->bugs & AHC_CACHETHEN_DIS_BUG) != 0)
  917                 dscommand0 |= CACHETHEN;
  918 
  919         if ((ahc->bugs & AHC_CACHETHEN_BUG) != 0)
  920                 dscommand0 &= ~CACHETHEN;
  921 
  922         ahc_outb(ahc, DSCOMMAND0, dscommand0);
  923 
  924         ahc->pci_cachesize =
  925             aic_pci_read_config(ahc->dev_softc, CSIZE_LATTIME,
  926                                 /*bytes*/1) & CACHESIZE;
  927         ahc->pci_cachesize *= 4;
  928 
  929         if ((ahc->bugs & AHC_PCI_2_1_RETRY_BUG) != 0
  930          && ahc->pci_cachesize == 4) {
  931                 aic_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
  932                                      0, /*bytes*/1);
  933                 ahc->pci_cachesize = 0;
  934         }
  935 
  936         /*
  937          * We cannot perform ULTRA speeds without the presence
  938          * of the external precision resistor.
  939          */
  940         if ((ahc->features & AHC_ULTRA) != 0) {
  941                 uint32_t devconfig;
  942 
  943                 devconfig = aic_pci_read_config(ahc->dev_softc,
  944                                                 DEVCONFIG, /*bytes*/4);
  945                 if ((devconfig & REXTVALID) == 0)
  946                         ahc->features &= ~AHC_ULTRA;
  947         }
  948 
  949         /* See if we have a SEEPROM and perform auto-term */
  950         check_extport(ahc, &sxfrctl1);
  951 
  952         /*
  953          * Take the LED out of diagnostic mode
  954          */
  955         sblkctl = ahc_inb(ahc, SBLKCTL);
  956         ahc_outb(ahc, SBLKCTL, (sblkctl & ~(DIAGLEDEN|DIAGLEDON)));
  957 
  958         if ((ahc->features & AHC_ULTRA2) != 0) {
  959                 ahc_outb(ahc, DFF_THRSH, RD_DFTHRSH_MAX|WR_DFTHRSH_MAX);
  960         } else {
  961                 ahc_outb(ahc, DSPCISTATUS, DFTHRSH_100);
  962         }
  963 
  964         if (ahc->flags & AHC_USEDEFAULTS) {
  965                 /*
  966                  * PCI Adapter default setup
  967                  * Should only be used if the adapter does not have
  968                  * a SEEPROM.
  969                  */
  970                 /* See if someone else set us up already */
  971                 if ((ahc->flags & AHC_NO_BIOS_INIT) == 0
  972                  && scsiseq != 0) {
  973                         printf("%s: Using left over BIOS settings\n",
  974                                 ahc_name(ahc));
  975                         ahc->flags &= ~AHC_USEDEFAULTS;
  976                         ahc->flags |= AHC_BIOS_ENABLED;
  977                 } else {
  978                         /*
  979                          * Assume only one connector and always turn
  980                          * on termination.
  981                          */
  982                         our_id = 0x07;
  983                         sxfrctl1 = STPWEN;
  984                 }
  985                 ahc_outb(ahc, SCSICONF, our_id|ENSPCHK|RESET_SCSI);
  986 
  987                 ahc->our_id = our_id;
  988         }
  989 
  990         /*
  991          * Take a look to see if we have external SRAM.
  992          * We currently do not attempt to use SRAM that is
  993          * shared among multiple controllers.
  994          */
  995         ahc_probe_ext_scbram(ahc);
  996 
  997         /*
  998          * Record our termination setting for the
  999          * generic initialization routine.
 1000          */
 1001         if ((sxfrctl1 & STPWEN) != 0)
 1002                 ahc->flags |= AHC_TERM_ENB_A;
 1003 
 1004         /*
 1005          * Save chip register configuration data for chip resets
 1006          * that occur during runtime and resume events.
 1007          */
 1008         ahc->bus_softc.pci_softc.devconfig =
 1009             aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
 1010         ahc->bus_softc.pci_softc.command =
 1011             aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/1);
 1012         ahc->bus_softc.pci_softc.csize_lattime =
 1013             aic_pci_read_config(ahc->dev_softc, CSIZE_LATTIME, /*bytes*/1);
 1014         ahc->bus_softc.pci_softc.dscommand0 = ahc_inb(ahc, DSCOMMAND0);
 1015         ahc->bus_softc.pci_softc.dspcistatus = ahc_inb(ahc, DSPCISTATUS);
 1016         if ((ahc->features & AHC_DT) != 0) {
 1017                 u_int sfunct;
 1018 
 1019                 sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
 1020                 ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
 1021                 ahc->bus_softc.pci_softc.optionmode = ahc_inb(ahc, OPTIONMODE);
 1022                 ahc->bus_softc.pci_softc.targcrccnt = ahc_inw(ahc, TARGCRCCNT);
 1023                 ahc_outb(ahc, SFUNCT, sfunct);
 1024                 ahc->bus_softc.pci_softc.crccontrol1 =
 1025                     ahc_inb(ahc, CRCCONTROL1);
 1026         }
 1027         if ((ahc->features & AHC_MULTI_FUNC) != 0)
 1028                 ahc->bus_softc.pci_softc.scbbaddr = ahc_inb(ahc, SCBBADDR);
 1029 
 1030         if ((ahc->features & AHC_ULTRA2) != 0)
 1031                 ahc->bus_softc.pci_softc.dff_thrsh = ahc_inb(ahc, DFF_THRSH);
 1032 
 1033         /* Core initialization */
 1034         error = ahc_init(ahc);
 1035         if (error != 0)
 1036                 return (error);
 1037 
 1038         /*
 1039          * Allow interrupts now that we are completely setup.
 1040          */
 1041         error = ahc_pci_map_int(ahc);
 1042         if (error != 0)
 1043                 return (error);
 1044 
 1045         ahc_lock(ahc);
 1046         /*
 1047          * Link this softc in with all other ahc instances.
 1048          */
 1049         ahc_softc_insert(ahc);
 1050         ahc_unlock(ahc);
 1051         return (0);
 1052 }
 1053 
 1054 /*
 1055  * Test for the presence of external sram in an
 1056  * "unshared" configuration.
 1057  */
 1058 static int
 1059 ahc_ext_scbram_present(struct ahc_softc *ahc)
 1060 {
 1061         u_int chip;
 1062         int ramps;
 1063         int single_user;
 1064         uint32_t devconfig;
 1065 
 1066         chip = ahc->chip & AHC_CHIPID_MASK;
 1067         devconfig = aic_pci_read_config(ahc->dev_softc,
 1068                                         DEVCONFIG, /*bytes*/4);
 1069         single_user = (devconfig & MPORTMODE) != 0;
 1070 
 1071         if ((ahc->features & AHC_ULTRA2) != 0)
 1072                 ramps = (ahc_inb(ahc, DSCOMMAND0) & RAMPS) != 0;
 1073         else if (chip == AHC_AIC7895 || chip == AHC_AIC7895C)
 1074                 /*
 1075                  * External SCBRAM arbitration is flakey
 1076                  * on these chips.  Unfortunately this means
 1077                  * we don't use the extra SCB ram space on the
 1078                  * 3940AUW.
 1079                  */
 1080                 ramps = 0;
 1081         else if (chip >= AHC_AIC7870)
 1082                 ramps = (devconfig & RAMPSM) != 0;
 1083         else
 1084                 ramps = 0;
 1085 
 1086         if (ramps && single_user)
 1087                 return (1);
 1088         return (0);
 1089 }
 1090 
 1091 /*
 1092  * Enable external scbram.
 1093  */
 1094 static void
 1095 ahc_scbram_config(struct ahc_softc *ahc, int enable, int pcheck,
 1096                   int fast, int large)
 1097 {
 1098         uint32_t devconfig;
 1099 
 1100         if (ahc->features & AHC_MULTI_FUNC) {
 1101                 /*
 1102                  * Set the SCB Base addr (highest address bit)
 1103                  * depending on which channel we are.
 1104                  */
 1105                 ahc_outb(ahc, SCBBADDR, aic_get_pci_function(ahc->dev_softc));
 1106         }
 1107 
 1108         ahc->flags &= ~AHC_LSCBS_ENABLED;
 1109         if (large)
 1110                 ahc->flags |= AHC_LSCBS_ENABLED;
 1111         devconfig = aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
 1112         if ((ahc->features & AHC_ULTRA2) != 0) {
 1113                 u_int dscommand0;
 1114 
 1115                 dscommand0 = ahc_inb(ahc, DSCOMMAND0);
 1116                 if (enable)
 1117                         dscommand0 &= ~INTSCBRAMSEL;
 1118                 else
 1119                         dscommand0 |= INTSCBRAMSEL;
 1120                 if (large)
 1121                         dscommand0 &= ~USCBSIZE32;
 1122                 else
 1123                         dscommand0 |= USCBSIZE32;
 1124                 ahc_outb(ahc, DSCOMMAND0, dscommand0);
 1125         } else {
 1126                 if (fast)
 1127                         devconfig &= ~EXTSCBTIME;
 1128                 else
 1129                         devconfig |= EXTSCBTIME;
 1130                 if (enable)
 1131                         devconfig &= ~SCBRAMSEL;
 1132                 else
 1133                         devconfig |= SCBRAMSEL;
 1134                 if (large)
 1135                         devconfig &= ~SCBSIZE32;
 1136                 else
 1137                         devconfig |= SCBSIZE32;
 1138         }
 1139         if (pcheck)
 1140                 devconfig |= EXTSCBPEN;
 1141         else
 1142                 devconfig &= ~EXTSCBPEN;
 1143 
 1144         aic_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
 1145 }
 1146 
 1147 /*
 1148  * Take a look to see if we have external SRAM.
 1149  * We currently do not attempt to use SRAM that is
 1150  * shared among multiple controllers.
 1151  */
 1152 static void
 1153 ahc_probe_ext_scbram(struct ahc_softc *ahc)
 1154 {
 1155         int num_scbs;
 1156         int test_num_scbs;
 1157         int enable;
 1158         int pcheck;
 1159         int fast;
 1160         int large;
 1161 
 1162         enable = FALSE;
 1163         pcheck = FALSE;
 1164         fast = FALSE;
 1165         large = FALSE;
 1166         num_scbs = 0;
 1167 
 1168         if (ahc_ext_scbram_present(ahc) == 0)
 1169                 goto done;
 1170 
 1171         /*
 1172          * Probe for the best parameters to use.
 1173          */
 1174         ahc_scbram_config(ahc, /*enable*/TRUE, pcheck, fast, large);
 1175         num_scbs = ahc_probe_scbs(ahc);
 1176         if (num_scbs == 0) {
 1177                 /* The SRAM wasn't really present. */
 1178                 goto done;
 1179         }
 1180         enable = TRUE;
 1181 
 1182         /*
 1183          * Clear any outstanding parity error
 1184          * and ensure that parity error reporting
 1185          * is enabled.
 1186          */
 1187         ahc_outb(ahc, SEQCTL, 0);
 1188         ahc_outb(ahc, CLRINT, CLRPARERR);
 1189         ahc_outb(ahc, CLRINT, CLRBRKADRINT);
 1190 
 1191         /* Now see if we can do parity */
 1192         ahc_scbram_config(ahc, enable, /*pcheck*/TRUE, fast, large);
 1193         num_scbs = ahc_probe_scbs(ahc);
 1194         if ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
 1195          || (ahc_inb(ahc, ERROR) & MPARERR) == 0)
 1196                 pcheck = TRUE;
 1197 
 1198         /* Clear any resulting parity error */
 1199         ahc_outb(ahc, CLRINT, CLRPARERR);
 1200         ahc_outb(ahc, CLRINT, CLRBRKADRINT);
 1201 
 1202         /* Now see if we can do fast timing */
 1203         ahc_scbram_config(ahc, enable, pcheck, /*fast*/TRUE, large);
 1204         test_num_scbs = ahc_probe_scbs(ahc);
 1205         if (test_num_scbs == num_scbs
 1206          && ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
 1207           || (ahc_inb(ahc, ERROR) & MPARERR) == 0))
 1208                 fast = TRUE;
 1209 
 1210         /*
 1211          * See if we can use large SCBs and still maintain
 1212          * the same overall count of SCBs.
 1213          */
 1214         if ((ahc->features & AHC_LARGE_SCBS) != 0) {
 1215                 ahc_scbram_config(ahc, enable, pcheck, fast, /*large*/TRUE);
 1216                 test_num_scbs = ahc_probe_scbs(ahc);
 1217                 if (test_num_scbs >= num_scbs) {
 1218                         large = TRUE;
 1219                         num_scbs = test_num_scbs;
 1220                         if (num_scbs >= 64) {
 1221                                 /*
 1222                                  * We have enough space to move the
 1223                                  * "busy targets table" into SCB space
 1224                                  * and make it qualify all the way to the
 1225                                  * lun level.
 1226                                  */
 1227                                 ahc->flags |= AHC_SCB_BTT;
 1228                         }
 1229                 }
 1230         }
 1231 done:
 1232         /*
 1233          * Disable parity error reporting until we
 1234          * can load instruction ram.
 1235          */
 1236         ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
 1237         /* Clear any latched parity error */
 1238         ahc_outb(ahc, CLRINT, CLRPARERR);
 1239         ahc_outb(ahc, CLRINT, CLRBRKADRINT);
 1240         if (bootverbose && enable) {
 1241                 printf("%s: External SRAM, %s access%s, %dbytes/SCB\n",
 1242                        ahc_name(ahc), fast ? "fast" : "slow", 
 1243                        pcheck ? ", parity checking enabled" : "",
 1244                        large ? 64 : 32);
 1245         }
 1246         ahc_scbram_config(ahc, enable, pcheck, fast, large);
 1247 }
 1248 
 1249 /*
 1250  * Perform some simple tests that should catch situations where
 1251  * our registers are invalidly mapped.
 1252  */
 1253 int
 1254 ahc_pci_test_register_access(struct ahc_softc *ahc)
 1255 {
 1256         int      error;
 1257         u_int    status1;
 1258         uint32_t cmd;
 1259         uint8_t  hcntrl;
 1260 
 1261         error = EIO;
 1262 
 1263         /*
 1264          * Enable PCI error interrupt status, but suppress NMIs
 1265          * generated by SERR raised due to target aborts.
 1266          */
 1267         cmd = aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
 1268         aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
 1269                              cmd & ~PCIM_CMD_SERRESPEN, /*bytes*/2);
 1270 
 1271         /*
 1272          * First a simple test to see if any
 1273          * registers can be read.  Reading
 1274          * HCNTRL has no side effects and has
 1275          * at least one bit that is guaranteed to
 1276          * be zero so it is a good register to
 1277          * use for this test.
 1278          */
 1279         hcntrl = ahc_inb(ahc, HCNTRL);
 1280 
 1281         if (hcntrl == 0xFF)
 1282                 goto fail;
 1283 
 1284         if ((hcntrl & CHIPRST) != 0) {
 1285                 /*
 1286                  * The chip has not been initialized since
 1287                  * PCI/EISA/VLB bus reset.  Don't trust
 1288                  * "left over BIOS data".
 1289                  */
 1290                 ahc->flags |= AHC_NO_BIOS_INIT;
 1291         }
 1292 
 1293         /*
 1294          * Next create a situation where write combining
 1295          * or read prefetching could be initiated by the
 1296          * CPU or host bridge.  Our device does not support
 1297          * either, so look for data corruption and/or flagged
 1298          * PCI errors.  First pause without causing another
 1299          * chip reset.
 1300          */
 1301         hcntrl &= ~CHIPRST;
 1302         ahc_outb(ahc, HCNTRL, hcntrl|PAUSE);
 1303         while (ahc_is_paused(ahc) == 0)
 1304                 ;
 1305 
 1306         /* Clear any PCI errors that occurred before our driver attached. */
 1307         status1 = aic_pci_read_config(ahc->dev_softc,
 1308                                       PCIR_STATUS + 1, /*bytes*/1);
 1309         aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
 1310                              status1, /*bytes*/1);
 1311         ahc_outb(ahc, CLRINT, CLRPARERR);
 1312 
 1313         ahc_outb(ahc, SEQCTL, PERRORDIS);
 1314         ahc_outb(ahc, SCBPTR, 0);
 1315         ahc_outl(ahc, SCB_BASE, 0x5aa555aa);
 1316         if (ahc_inl(ahc, SCB_BASE) != 0x5aa555aa)
 1317                 goto fail;
 1318 
 1319         status1 = aic_pci_read_config(ahc->dev_softc,
 1320                                       PCIR_STATUS + 1, /*bytes*/1);
 1321         if ((status1 & STA) != 0)
 1322                 goto fail;
 1323 
 1324         error = 0;
 1325 
 1326 fail:
 1327         /* Silently clear any latched errors. */
 1328         status1 = aic_pci_read_config(ahc->dev_softc,
 1329                                       PCIR_STATUS + 1, /*bytes*/1);
 1330         aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
 1331                              status1, /*bytes*/1);
 1332         ahc_outb(ahc, CLRINT, CLRPARERR);
 1333         ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
 1334         aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND, cmd, /*bytes*/2);
 1335         return (error);
 1336 }
 1337 
 1338 /*
 1339  * Check the external port logic for a serial eeprom
 1340  * and termination/cable detection contrls.
 1341  */
 1342 static void
 1343 check_extport(struct ahc_softc *ahc, u_int *sxfrctl1)
 1344 {
 1345         struct  seeprom_descriptor sd;
 1346         struct  seeprom_config *sc;
 1347         int     have_seeprom;
 1348         int     have_autoterm;
 1349 
 1350         sd.sd_ahc = ahc;
 1351         sd.sd_control_offset = SEECTL;          
 1352         sd.sd_status_offset = SEECTL;           
 1353         sd.sd_dataout_offset = SEECTL;          
 1354         sc = ahc->seep_config;
 1355 
 1356         /*
 1357          * For some multi-channel devices, the c46 is simply too
 1358          * small to work.  For the other controller types, we can
 1359          * get our information from either SEEPROM type.  Set the
 1360          * type to start our probe with accordingly.
 1361          */
 1362         if (ahc->flags & AHC_LARGE_SEEPROM)
 1363                 sd.sd_chip = C56_66;
 1364         else
 1365                 sd.sd_chip = C46;
 1366 
 1367         sd.sd_MS = SEEMS;
 1368         sd.sd_RDY = SEERDY;
 1369         sd.sd_CS = SEECS;
 1370         sd.sd_CK = SEECK;
 1371         sd.sd_DO = SEEDO;
 1372         sd.sd_DI = SEEDI;
 1373 
 1374         have_seeprom = ahc_acquire_seeprom(ahc, &sd);
 1375         if (have_seeprom) {
 1376                 if (bootverbose) 
 1377                         printf("%s: Reading SEEPROM...", ahc_name(ahc));
 1378 
 1379                 for (;;) {
 1380                         u_int start_addr;
 1381 
 1382                         start_addr = 32 * (ahc->channel - 'A');
 1383 
 1384                         have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
 1385                                                         start_addr,
 1386                                                         sizeof(*sc)/2);
 1387 
 1388                         if (have_seeprom)
 1389                                 have_seeprom = ahc_verify_cksum(sc);
 1390 
 1391                         if (have_seeprom != 0 || sd.sd_chip == C56_66) {
 1392                                 if (bootverbose) {
 1393                                         if (have_seeprom == 0)
 1394                                                 printf ("checksum error\n");
 1395                                         else
 1396                                                 printf ("done.\n");
 1397                                 }
 1398                                 break;
 1399                         }
 1400                         sd.sd_chip = C56_66;
 1401                 }
 1402                 ahc_release_seeprom(&sd);
 1403 
 1404                 /* Remember the SEEPROM type for later */
 1405                 if (sd.sd_chip == C56_66)
 1406                         ahc->flags |= AHC_LARGE_SEEPROM;
 1407         }
 1408 
 1409         if (!have_seeprom) {
 1410                 /*
 1411                  * Pull scratch ram settings and treat them as
 1412                  * if they are the contents of an seeprom if
 1413                  * the 'ADPT' signature is found in SCB2.
 1414                  * We manually compose the data as 16bit values
 1415                  * to avoid endian issues.
 1416                  */
 1417                 ahc_outb(ahc, SCBPTR, 2);
 1418                 if (ahc_inb(ahc, SCB_BASE) == 'A'
 1419                  && ahc_inb(ahc, SCB_BASE + 1) == 'D'
 1420                  && ahc_inb(ahc, SCB_BASE + 2) == 'P'
 1421                  && ahc_inb(ahc, SCB_BASE + 3) == 'T') {
 1422                         uint16_t *sc_data;
 1423                         int       i;
 1424 
 1425                         sc_data = (uint16_t *)sc;
 1426                         for (i = 0; i < 32; i++, sc_data++) {
 1427                                 int     j;
 1428 
 1429                                 j = i * 2;
 1430                                 *sc_data = ahc_inb(ahc, SRAM_BASE + j)
 1431                                          | ahc_inb(ahc, SRAM_BASE + j + 1) << 8;
 1432                         }
 1433                         have_seeprom = ahc_verify_cksum(sc);
 1434                         if (have_seeprom)
 1435                                 ahc->flags |= AHC_SCB_CONFIG_USED;
 1436                 }
 1437                 /*
 1438                  * Clear any SCB parity errors in case this data and
 1439                  * its associated parity was not initialized by the BIOS
 1440                  */
 1441                 ahc_outb(ahc, CLRINT, CLRPARERR);
 1442                 ahc_outb(ahc, CLRINT, CLRBRKADRINT);
 1443         }
 1444 
 1445         if (!have_seeprom) {
 1446                 if (bootverbose)
 1447                         printf("%s: No SEEPROM available.\n", ahc_name(ahc));
 1448                 ahc->flags |= AHC_USEDEFAULTS;
 1449                 free(ahc->seep_config, M_DEVBUF);
 1450                 ahc->seep_config = NULL;
 1451                 sc = NULL;
 1452         } else {
 1453                 ahc_parse_pci_eeprom(ahc, sc);
 1454         }
 1455 
 1456         /*
 1457          * Cards that have the external logic necessary to talk to
 1458          * a SEEPROM, are almost certain to have the remaining logic
 1459          * necessary for auto-termination control.  This assumption
 1460          * hasn't failed yet...
 1461          */
 1462         have_autoterm = have_seeprom;
 1463 
 1464         /*
 1465          * Some low-cost chips have SEEPROM and auto-term control built
 1466          * in, instead of using a GAL.  They can tell us directly
 1467          * if the termination logic is enabled.
 1468          */
 1469         if ((ahc->features & AHC_SPIOCAP) != 0) {
 1470                 if ((ahc_inb(ahc, SPIOCAP) & SSPIOCPS) == 0)
 1471                         have_autoterm = FALSE;
 1472         }
 1473 
 1474         if (have_autoterm) {
 1475                 ahc->flags |= AHC_HAS_TERM_LOGIC;
 1476                 ahc_acquire_seeprom(ahc, &sd);
 1477                 configure_termination(ahc, &sd, sc->adapter_control, sxfrctl1);
 1478                 ahc_release_seeprom(&sd);
 1479         } else if (have_seeprom) {
 1480                 *sxfrctl1 &= ~STPWEN;
 1481                 if ((sc->adapter_control & CFSTERM) != 0)
 1482                         *sxfrctl1 |= STPWEN;
 1483                 if (bootverbose)
 1484                         printf("%s: Low byte termination %sabled\n",
 1485                                ahc_name(ahc),
 1486                                (*sxfrctl1 & STPWEN) ? "en" : "dis");
 1487         }
 1488 }
 1489 
 1490 static void
 1491 ahc_parse_pci_eeprom(struct ahc_softc *ahc, struct seeprom_config *sc)
 1492 {
 1493         /*
 1494          * Put the data we've collected down into SRAM
 1495          * where ahc_init will find it.
 1496          */
 1497         int      i;
 1498         int      max_targ = sc->max_targets & CFMAXTARG;
 1499         u_int    scsi_conf;
 1500         uint16_t discenable;
 1501         uint16_t ultraenb;
 1502 
 1503         discenable = 0;
 1504         ultraenb = 0;
 1505         if ((sc->adapter_control & CFULTRAEN) != 0) {
 1506                 /*
 1507                  * Determine if this adapter has a "newstyle"
 1508                  * SEEPROM format.
 1509                  */
 1510                 for (i = 0; i < max_targ; i++) {
 1511                         if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0) {
 1512                                 ahc->flags |= AHC_NEWEEPROM_FMT;
 1513                                 break;
 1514                         }
 1515                 }
 1516         }
 1517 
 1518         for (i = 0; i < max_targ; i++) {
 1519                 u_int     scsirate;
 1520                 uint16_t target_mask;
 1521 
 1522                 target_mask = 0x01 << i;
 1523                 if (sc->device_flags[i] & CFDISC)
 1524                         discenable |= target_mask;
 1525                 if ((ahc->flags & AHC_NEWEEPROM_FMT) != 0) {
 1526                         if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0)
 1527                                 ultraenb |= target_mask;
 1528                 } else if ((sc->adapter_control & CFULTRAEN) != 0) {
 1529                         ultraenb |= target_mask;
 1530                 }
 1531                 if ((sc->device_flags[i] & CFXFER) == 0x04
 1532                  && (ultraenb & target_mask) != 0) {
 1533                         /* Treat 10MHz as a non-ultra speed */
 1534                         sc->device_flags[i] &= ~CFXFER;
 1535                         ultraenb &= ~target_mask;
 1536                 }
 1537                 if ((ahc->features & AHC_ULTRA2) != 0) {
 1538                         u_int offset;
 1539 
 1540                         if (sc->device_flags[i] & CFSYNCH)
 1541                                 offset = MAX_OFFSET_ULTRA2;
 1542                         else 
 1543                                 offset = 0;
 1544                         ahc_outb(ahc, TARG_OFFSET + i, offset);
 1545 
 1546                         /*
 1547                          * The ultra enable bits contain the
 1548                          * high bit of the ultra2 sync rate
 1549                          * field.
 1550                          */
 1551                         scsirate = (sc->device_flags[i] & CFXFER)
 1552                                  | ((ultraenb & target_mask) ? 0x8 : 0x0);
 1553                         if (sc->device_flags[i] & CFWIDEB)
 1554                                 scsirate |= WIDEXFER;
 1555                 } else {
 1556                         scsirate = (sc->device_flags[i] & CFXFER) << 4;
 1557                         if (sc->device_flags[i] & CFSYNCH)
 1558                                 scsirate |= SOFS;
 1559                         if (sc->device_flags[i] & CFWIDEB)
 1560                                 scsirate |= WIDEXFER;
 1561                 }
 1562                 ahc_outb(ahc, TARG_SCSIRATE + i, scsirate);
 1563         }
 1564         ahc->our_id = sc->brtime_id & CFSCSIID;
 1565 
 1566         scsi_conf = (ahc->our_id & 0x7);
 1567         if (sc->adapter_control & CFSPARITY)
 1568                 scsi_conf |= ENSPCHK;
 1569         if (sc->adapter_control & CFRESETB)
 1570                 scsi_conf |= RESET_SCSI;
 1571 
 1572         ahc->flags |= (sc->adapter_control & CFBOOTCHAN) >> CFBOOTCHANSHIFT;
 1573 
 1574         if (sc->bios_control & CFEXTEND)
 1575                 ahc->flags |= AHC_EXTENDED_TRANS_A;
 1576 
 1577         if (sc->bios_control & CFBIOSEN)
 1578                 ahc->flags |= AHC_BIOS_ENABLED;
 1579         if (ahc->features & AHC_ULTRA
 1580          && (ahc->flags & AHC_NEWEEPROM_FMT) == 0) {
 1581                 /* Should we enable Ultra mode? */
 1582                 if (!(sc->adapter_control & CFULTRAEN))
 1583                         /* Treat us as a non-ultra card */
 1584                         ultraenb = 0;
 1585         }
 1586 
 1587         if (sc->signature == CFSIGNATURE
 1588          || sc->signature == CFSIGNATURE2) {
 1589                 uint32_t devconfig;
 1590 
 1591                 /* Honor the STPWLEVEL settings */
 1592                 devconfig = aic_pci_read_config(ahc->dev_softc,
 1593                                                 DEVCONFIG, /*bytes*/4);
 1594                 devconfig &= ~STPWLEVEL;
 1595                 if ((sc->bios_control & CFSTPWLEVEL) != 0)
 1596                         devconfig |= STPWLEVEL;
 1597                 aic_pci_write_config(ahc->dev_softc, DEVCONFIG,
 1598                                      devconfig, /*bytes*/4);
 1599         }
 1600         /* Set SCSICONF info */
 1601         ahc_outb(ahc, SCSICONF, scsi_conf);
 1602         ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
 1603         ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
 1604         ahc_outb(ahc, ULTRA_ENB, ultraenb & 0xff);
 1605         ahc_outb(ahc, ULTRA_ENB + 1, (ultraenb >> 8) & 0xff);
 1606 }
 1607 
 1608 static void
 1609 configure_termination(struct ahc_softc *ahc,
 1610                       struct seeprom_descriptor *sd,
 1611                       u_int adapter_control,
 1612                       u_int *sxfrctl1)
 1613 {
 1614         uint8_t brddat;
 1615 
 1616         brddat = 0;
 1617 
 1618         /*
 1619          * Update the settings in sxfrctl1 to match the
 1620          * termination settings 
 1621          */
 1622         *sxfrctl1 = 0;
 1623 
 1624         /*
 1625          * SEECS must be on for the GALS to latch
 1626          * the data properly.  Be sure to leave MS
 1627          * on or we will release the seeprom.
 1628          */
 1629         SEEPROM_OUTB(sd, sd->sd_MS | sd->sd_CS);
 1630         if ((adapter_control & CFAUTOTERM) != 0
 1631          || (ahc->features & AHC_NEW_TERMCTL) != 0) {
 1632                 int internal50_present;
 1633                 int internal68_present;
 1634                 int externalcable_present;
 1635                 int eeprom_present;
 1636                 int enableSEC_low;
 1637                 int enableSEC_high;
 1638                 int enablePRI_low;
 1639                 int enablePRI_high;
 1640                 int sum;
 1641 
 1642                 enableSEC_low = 0;
 1643                 enableSEC_high = 0;
 1644                 enablePRI_low = 0;
 1645                 enablePRI_high = 0;
 1646                 if ((ahc->features & AHC_NEW_TERMCTL) != 0) {
 1647                         ahc_new_term_detect(ahc, &enableSEC_low,
 1648                                             &enableSEC_high,
 1649                                             &enablePRI_low,
 1650                                             &enablePRI_high,
 1651                                             &eeprom_present);
 1652                         if ((adapter_control & CFSEAUTOTERM) == 0) {
 1653                                 if (bootverbose)
 1654                                         printf("%s: Manual SE Termination\n",
 1655                                                ahc_name(ahc));
 1656                                 enableSEC_low = (adapter_control & CFSELOWTERM);
 1657                                 enableSEC_high =
 1658                                     (adapter_control & CFSEHIGHTERM);
 1659                         }
 1660                         if ((adapter_control & CFAUTOTERM) == 0) {
 1661                                 if (bootverbose)
 1662                                         printf("%s: Manual LVD Termination\n",
 1663                                                ahc_name(ahc));
 1664                                 enablePRI_low = (adapter_control & CFSTERM);
 1665                                 enablePRI_high = (adapter_control & CFWSTERM);
 1666                         }
 1667                         /* Make the table calculations below happy */
 1668                         internal50_present = 0;
 1669                         internal68_present = 1;
 1670                         externalcable_present = 1;
 1671                 } else if ((ahc->features & AHC_SPIOCAP) != 0) {
 1672                         aic785X_cable_detect(ahc, &internal50_present,
 1673                                              &externalcable_present,
 1674                                              &eeprom_present);
 1675                         /* Can never support a wide connector. */
 1676                         internal68_present = 0;
 1677                 } else {
 1678                         aic787X_cable_detect(ahc, &internal50_present,
 1679                                              &internal68_present,
 1680                                              &externalcable_present,
 1681                                              &eeprom_present);
 1682                 }
 1683 
 1684                 if ((ahc->features & AHC_WIDE) == 0)
 1685                         internal68_present = 0;
 1686 
 1687                 if (bootverbose
 1688                  && (ahc->features & AHC_ULTRA2) == 0) {
 1689                         printf("%s: internal 50 cable %s present",
 1690                                ahc_name(ahc),
 1691                                internal50_present ? "is":"not");
 1692 
 1693                         if ((ahc->features & AHC_WIDE) != 0)
 1694                                 printf(", internal 68 cable %s present",
 1695                                        internal68_present ? "is":"not");
 1696                         printf("\n%s: external cable %s present\n",
 1697                                ahc_name(ahc),
 1698                                externalcable_present ? "is":"not");
 1699                 }
 1700                 if (bootverbose)
 1701                         printf("%s: BIOS eeprom %s present\n",
 1702                                ahc_name(ahc), eeprom_present ? "is" : "not");
 1703 
 1704                 if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0) {
 1705                         /*
 1706                          * The 50 pin connector is a separate bus,
 1707                          * so force it to always be terminated.
 1708                          * In the future, perform current sensing
 1709                          * to determine if we are in the middle of
 1710                          * a properly terminated bus.
 1711                          */
 1712                         internal50_present = 0;
 1713                 }
 1714 
 1715                 /*
 1716                  * Now set the termination based on what
 1717                  * we found.
 1718                  * Flash Enable = BRDDAT7
 1719                  * Secondary High Term Enable = BRDDAT6
 1720                  * Secondary Low Term Enable = BRDDAT5 (7890)
 1721                  * Primary High Term Enable = BRDDAT4 (7890)
 1722                  */
 1723                 if ((ahc->features & AHC_ULTRA2) == 0
 1724                  && (internal50_present != 0)
 1725                  && (internal68_present != 0)
 1726                  && (externalcable_present != 0)) {
 1727                         printf("%s: Illegal cable configuration!!. "
 1728                                "Only two connectors on the "
 1729                                "adapter may be used at a "
 1730                                "time!\n", ahc_name(ahc));
 1731 
 1732                         /*
 1733                          * Pretend there are no cables in the hope
 1734                          * that having all of the termination on
 1735                          * gives us a more stable bus.
 1736                          */
 1737                         internal50_present = 0;
 1738                         internal68_present = 0;
 1739                         externalcable_present = 0;
 1740                 }
 1741 
 1742                 if ((ahc->features & AHC_WIDE) != 0
 1743                  && ((externalcable_present == 0)
 1744                   || (internal68_present == 0)
 1745                   || (enableSEC_high != 0))) {
 1746                         brddat |= BRDDAT6;
 1747                         if (bootverbose) {
 1748                                 if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
 1749                                         printf("%s: 68 pin termination "
 1750                                                "Enabled\n", ahc_name(ahc));
 1751                                 else
 1752                                         printf("%s: %sHigh byte termination "
 1753                                                "Enabled\n", ahc_name(ahc),
 1754                                                enableSEC_high ? "Secondary "
 1755                                                               : "");
 1756                         }
 1757                 }
 1758 
 1759                 sum = internal50_present + internal68_present
 1760                     + externalcable_present;
 1761                 if (sum < 2 || (enableSEC_low != 0)) {
 1762                         if ((ahc->features & AHC_ULTRA2) != 0)
 1763                                 brddat |= BRDDAT5;
 1764                         else
 1765                                 *sxfrctl1 |= STPWEN;
 1766                         if (bootverbose) {
 1767                                 if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
 1768                                         printf("%s: 50 pin termination "
 1769                                                "Enabled\n", ahc_name(ahc));
 1770                                 else
 1771                                         printf("%s: %sLow byte termination "
 1772                                                "Enabled\n", ahc_name(ahc),
 1773                                                enableSEC_low ? "Secondary "
 1774                                                              : "");
 1775                         }
 1776                 }
 1777 
 1778                 if (enablePRI_low != 0) {
 1779                         *sxfrctl1 |= STPWEN;
 1780                         if (bootverbose)
 1781                                 printf("%s: Primary Low Byte termination "
 1782                                        "Enabled\n", ahc_name(ahc));
 1783                 }
 1784 
 1785                 /*
 1786                  * Setup STPWEN before setting up the rest of
 1787                  * the termination per the tech note on the U160 cards.
 1788                  */
 1789                 ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
 1790 
 1791                 if (enablePRI_high != 0) {
 1792                         brddat |= BRDDAT4;
 1793                         if (bootverbose)
 1794                                 printf("%s: Primary High Byte "
 1795                                        "termination Enabled\n",
 1796                                        ahc_name(ahc));
 1797                 }
 1798                 
 1799                 write_brdctl(ahc, brddat);
 1800 
 1801         } else {
 1802                 if ((adapter_control & CFSTERM) != 0) {
 1803                         *sxfrctl1 |= STPWEN;
 1804 
 1805                         if (bootverbose)
 1806                                 printf("%s: %sLow byte termination Enabled\n",
 1807                                        ahc_name(ahc),
 1808                                        (ahc->features & AHC_ULTRA2) ? "Primary "
 1809                                                                     : "");
 1810                 }
 1811 
 1812                 if ((adapter_control & CFWSTERM) != 0
 1813                  && (ahc->features & AHC_WIDE) != 0) {
 1814                         brddat |= BRDDAT6;
 1815                         if (bootverbose)
 1816                                 printf("%s: %sHigh byte termination Enabled\n",
 1817                                        ahc_name(ahc),
 1818                                        (ahc->features & AHC_ULTRA2)
 1819                                      ? "Secondary " : "");
 1820                 }
 1821 
 1822                 /*
 1823                  * Setup STPWEN before setting up the rest of
 1824                  * the termination per the tech note on the U160 cards.
 1825                  */
 1826                 ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
 1827 
 1828                 if ((ahc->features & AHC_WIDE) != 0)
 1829                         write_brdctl(ahc, brddat);
 1830         }
 1831         SEEPROM_OUTB(sd, sd->sd_MS); /* Clear CS */
 1832 }
 1833 
 1834 static void
 1835 ahc_new_term_detect(struct ahc_softc *ahc, int *enableSEC_low,
 1836                     int *enableSEC_high, int *enablePRI_low,
 1837                     int *enablePRI_high, int *eeprom_present)
 1838 {
 1839         uint8_t brdctl;
 1840 
 1841         /*
 1842          * BRDDAT7 = Eeprom
 1843          * BRDDAT6 = Enable Secondary High Byte termination
 1844          * BRDDAT5 = Enable Secondary Low Byte termination
 1845          * BRDDAT4 = Enable Primary high byte termination
 1846          * BRDDAT3 = Enable Primary low byte termination
 1847          */
 1848         brdctl = read_brdctl(ahc);
 1849         *eeprom_present = brdctl & BRDDAT7;
 1850         *enableSEC_high = (brdctl & BRDDAT6);
 1851         *enableSEC_low = (brdctl & BRDDAT5);
 1852         *enablePRI_high = (brdctl & BRDDAT4);
 1853         *enablePRI_low = (brdctl & BRDDAT3);
 1854 }
 1855 
 1856 static void
 1857 aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
 1858                      int *internal68_present, int *externalcable_present,
 1859                      int *eeprom_present)
 1860 {
 1861         uint8_t brdctl;
 1862 
 1863         /*
 1864          * First read the status of our cables.
 1865          * Set the rom bank to 0 since the
 1866          * bank setting serves as a multiplexor
 1867          * for the cable detection logic.
 1868          * BRDDAT5 controls the bank switch.
 1869          */
 1870         write_brdctl(ahc, 0);
 1871 
 1872         /*
 1873          * Now read the state of the internal
 1874          * connectors.  BRDDAT6 is INT50 and
 1875          * BRDDAT7 is INT68.
 1876          */
 1877         brdctl = read_brdctl(ahc);
 1878         *internal50_present = (brdctl & BRDDAT6) ? 0 : 1;
 1879         *internal68_present = (brdctl & BRDDAT7) ? 0 : 1;
 1880 
 1881         /*
 1882          * Set the rom bank to 1 and determine
 1883          * the other signals.
 1884          */
 1885         write_brdctl(ahc, BRDDAT5);
 1886 
 1887         /*
 1888          * Now read the state of the external
 1889          * connectors.  BRDDAT6 is EXT68 and
 1890          * BRDDAT7 is EPROMPS.
 1891          */
 1892         brdctl = read_brdctl(ahc);
 1893         *externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
 1894         *eeprom_present = (brdctl & BRDDAT7) ? 1 : 0;
 1895 }
 1896 
 1897 static void
 1898 aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
 1899                      int *externalcable_present, int *eeprom_present)
 1900 {
 1901         uint8_t brdctl;
 1902         uint8_t spiocap;
 1903 
 1904         spiocap = ahc_inb(ahc, SPIOCAP);
 1905         spiocap &= ~SOFTCMDEN;
 1906         spiocap |= EXT_BRDCTL;
 1907         ahc_outb(ahc, SPIOCAP, spiocap);
 1908         ahc_outb(ahc, BRDCTL, BRDRW|BRDCS);
 1909         ahc_flush_device_writes(ahc);
 1910         aic_delay(500);
 1911         ahc_outb(ahc, BRDCTL, 0);
 1912         ahc_flush_device_writes(ahc);
 1913         aic_delay(500);
 1914         brdctl = ahc_inb(ahc, BRDCTL);
 1915         *internal50_present = (brdctl & BRDDAT5) ? 0 : 1;
 1916         *externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
 1917         *eeprom_present = (ahc_inb(ahc, SPIOCAP) & EEPROM) ? 1 : 0;
 1918 }
 1919 
 1920 int
 1921 ahc_acquire_seeprom(struct ahc_softc *ahc, struct seeprom_descriptor *sd)
 1922 {
 1923         int wait;
 1924 
 1925         if ((ahc->features & AHC_SPIOCAP) != 0
 1926          && (ahc_inb(ahc, SPIOCAP) & SEEPROM) == 0)
 1927                 return (0);
 1928 
 1929         /*
 1930          * Request access of the memory port.  When access is
 1931          * granted, SEERDY will go high.  We use a 1 second
 1932          * timeout which should be near 1 second more than
 1933          * is needed.  Reason: after the chip reset, there
 1934          * should be no contention.
 1935          */
 1936         SEEPROM_OUTB(sd, sd->sd_MS);
 1937         wait = 1000;  /* 1 second timeout in msec */
 1938         while (--wait && ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0)) {
 1939                 aic_delay(1000);  /* delay 1 msec */
 1940         }
 1941         if ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0) {
 1942                 SEEPROM_OUTB(sd, 0); 
 1943                 return (0);
 1944         }
 1945         return(1);
 1946 }
 1947 
 1948 void
 1949 ahc_release_seeprom(struct seeprom_descriptor *sd)
 1950 {
 1951         /* Release access to the memory port and the serial EEPROM. */
 1952         SEEPROM_OUTB(sd, 0);
 1953 }
 1954 
 1955 static void
 1956 write_brdctl(struct ahc_softc *ahc, uint8_t value)
 1957 {
 1958         uint8_t brdctl;
 1959 
 1960         if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
 1961                 brdctl = BRDSTB;
 1962                 if (ahc->channel == 'B')
 1963                         brdctl |= BRDCS;
 1964         } else if ((ahc->features & AHC_ULTRA2) != 0) {
 1965                 brdctl = 0;
 1966         } else {
 1967                 brdctl = BRDSTB|BRDCS;
 1968         }
 1969         ahc_outb(ahc, BRDCTL, brdctl);
 1970         ahc_flush_device_writes(ahc);
 1971         brdctl |= value;
 1972         ahc_outb(ahc, BRDCTL, brdctl);
 1973         ahc_flush_device_writes(ahc);
 1974         if ((ahc->features & AHC_ULTRA2) != 0)
 1975                 brdctl |= BRDSTB_ULTRA2;
 1976         else
 1977                 brdctl &= ~BRDSTB;
 1978         ahc_outb(ahc, BRDCTL, brdctl);
 1979         ahc_flush_device_writes(ahc);
 1980         if ((ahc->features & AHC_ULTRA2) != 0)
 1981                 brdctl = 0;
 1982         else
 1983                 brdctl &= ~BRDCS;
 1984         ahc_outb(ahc, BRDCTL, brdctl);
 1985 }
 1986 
 1987 static uint8_t
 1988 read_brdctl(struct ahc_softc *ahc)
 1989 {
 1990         uint8_t brdctl;
 1991         uint8_t value;
 1992 
 1993         if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
 1994                 brdctl = BRDRW;
 1995                 if (ahc->channel == 'B')
 1996                         brdctl |= BRDCS;
 1997         } else if ((ahc->features & AHC_ULTRA2) != 0) {
 1998                 brdctl = BRDRW_ULTRA2;
 1999         } else {
 2000                 brdctl = BRDRW|BRDCS;
 2001         }
 2002         ahc_outb(ahc, BRDCTL, brdctl);
 2003         ahc_flush_device_writes(ahc);
 2004         value = ahc_inb(ahc, BRDCTL);
 2005         ahc_outb(ahc, BRDCTL, 0);
 2006         return (value);
 2007 }
 2008 
 2009 static void
 2010 ahc_pci_intr(struct ahc_softc *ahc)
 2011 {
 2012         u_int error;
 2013         u_int status1;
 2014 
 2015         error = ahc_inb(ahc, ERROR);
 2016         if ((error & PCIERRSTAT) == 0)
 2017                 return;
 2018 
 2019         status1 = aic_pci_read_config(ahc->dev_softc,
 2020                                       PCIR_STATUS + 1, /*bytes*/1);
 2021 
 2022         if ((status1 & ~DPE) != 0
 2023          || (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
 2024                 printf("%s: PCI error Interrupt at seqaddr = 0x%x\n",
 2025                        ahc_name(ahc),
 2026                        ahc_inb(ahc, SEQADDR0) | (ahc_inb(ahc, SEQADDR1) << 8));
 2027         }
 2028 
 2029         if (status1 & DPE
 2030          && (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
 2031                 ahc->pci_target_perr_count++;
 2032                 printf("%s: Data Parity Error Detected during address "
 2033                        "or write data phase\n", ahc_name(ahc));
 2034         }
 2035         if (status1 & SSE) {
 2036                 printf("%s: Signal System Error Detected\n", ahc_name(ahc));
 2037         }
 2038         if (status1 & RMA) {
 2039                 printf("%s: Received a Master Abort\n", ahc_name(ahc));
 2040         }
 2041         if (status1 & RTA) {
 2042                 printf("%s: Received a Target Abort\n", ahc_name(ahc));
 2043         }
 2044         if (status1 & STA) {
 2045                 printf("%s: Signaled a Target Abort\n", ahc_name(ahc));
 2046         }
 2047         if (status1 & DPR) {
 2048                 printf("%s: Data Parity Error has been reported via PERR#\n",
 2049                        ahc_name(ahc));
 2050         }
 2051 
 2052         /* Clear latched errors. */
 2053         aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
 2054                              status1, /*bytes*/1);
 2055 
 2056         if ((status1 & (DPE|SSE|RMA|RTA|STA|DPR)) == 0) {
 2057                 printf("%s: Latched PCIERR interrupt with "
 2058                        "no status bits set\n", ahc_name(ahc)); 
 2059         } else {
 2060                 ahc_outb(ahc, CLRINT, CLRPARERR);
 2061         }
 2062 
 2063         if (ahc->pci_target_perr_count > AHC_PCI_TARGET_PERR_THRESH
 2064          && (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
 2065                 printf(
 2066 "%s: WARNING WARNING WARNING WARNING\n"
 2067 "%s: Too many PCI parity errors observed as a target.\n"
 2068 "%s: Some device on this PCI bus is generating bad parity.\n"
 2069 "%s: This is an error *observed by*, not *generated by*, %s.\n"
 2070 "%s: PCI parity error checking has been disabled.\n"
 2071 "%s: WARNING WARNING WARNING WARNING\n",
 2072                        ahc_name(ahc), ahc_name(ahc), ahc_name(ahc),
 2073                        ahc_name(ahc), ahc_name(ahc), ahc_name(ahc),
 2074                        ahc_name(ahc));
 2075                 ahc->seqctl |= FAILDIS;
 2076                 ahc->flags |= AHC_DISABLE_PCI_PERR;
 2077                 ahc_outb(ahc, SEQCTL, ahc->seqctl);
 2078         }
 2079         ahc_unpause(ahc);
 2080 }
 2081 
 2082 static int
 2083 ahc_pci_chip_init(struct ahc_softc *ahc)
 2084 {
 2085         ahc_outb(ahc, DSCOMMAND0, ahc->bus_softc.pci_softc.dscommand0);
 2086         ahc_outb(ahc, DSPCISTATUS, ahc->bus_softc.pci_softc.dspcistatus);
 2087         if ((ahc->features & AHC_DT) != 0) {
 2088                 u_int sfunct;
 2089 
 2090                 sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
 2091                 ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
 2092                 ahc_outb(ahc, OPTIONMODE, ahc->bus_softc.pci_softc.optionmode);
 2093                 ahc_outw(ahc, TARGCRCCNT, ahc->bus_softc.pci_softc.targcrccnt);
 2094                 ahc_outb(ahc, SFUNCT, sfunct);
 2095                 ahc_outb(ahc, CRCCONTROL1,
 2096                          ahc->bus_softc.pci_softc.crccontrol1);
 2097         }
 2098         if ((ahc->features & AHC_MULTI_FUNC) != 0)
 2099                 ahc_outb(ahc, SCBBADDR, ahc->bus_softc.pci_softc.scbbaddr);
 2100 
 2101         if ((ahc->features & AHC_ULTRA2) != 0)
 2102                 ahc_outb(ahc, DFF_THRSH, ahc->bus_softc.pci_softc.dff_thrsh);
 2103 
 2104         return (ahc_chip_init(ahc));
 2105 }
 2106 
 2107 static int
 2108 ahc_pci_suspend(struct ahc_softc *ahc)
 2109 {
 2110         return (ahc_suspend(ahc));
 2111 }
 2112 
 2113 static int
 2114 ahc_pci_resume(struct ahc_softc *ahc)
 2115 {
 2116 
 2117         aic_power_state_change(ahc, AIC_POWER_STATE_D0);
 2118 
 2119         /*
 2120          * We assume that the OS has restored our register
 2121          * mappings, etc.  Just update the config space registers
 2122          * that the OS doesn't know about and rely on our chip
 2123          * reset handler to handle the rest.
 2124          */
 2125         aic_pci_write_config(ahc->dev_softc, DEVCONFIG,
 2126                              ahc->bus_softc.pci_softc.devconfig, /*bytes*/4);
 2127         aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
 2128                              ahc->bus_softc.pci_softc.command, /*bytes*/1);
 2129         aic_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
 2130                              ahc->bus_softc.pci_softc.csize_lattime,
 2131                              /*bytes*/1);
 2132         if ((ahc->flags & AHC_HAS_TERM_LOGIC) != 0) {
 2133                 struct  seeprom_descriptor sd;
 2134                 u_int   sxfrctl1;
 2135 
 2136                 sd.sd_ahc = ahc;
 2137                 sd.sd_control_offset = SEECTL;          
 2138                 sd.sd_status_offset = SEECTL;           
 2139                 sd.sd_dataout_offset = SEECTL;          
 2140 
 2141                 ahc_acquire_seeprom(ahc, &sd);
 2142                 configure_termination(ahc, &sd,
 2143                                       ahc->seep_config->adapter_control,
 2144                                       &sxfrctl1);
 2145                 ahc_release_seeprom(&sd);
 2146         }
 2147         return (ahc_resume(ahc));
 2148 }
 2149 
 2150 static int
 2151 ahc_aic785X_setup(struct ahc_softc *ahc)
 2152 {
 2153         aic_dev_softc_t pci;
 2154         uint8_t rev;
 2155 
 2156         pci = ahc->dev_softc;
 2157         ahc->channel = 'A';
 2158         ahc->chip = AHC_AIC7850;
 2159         ahc->features = AHC_AIC7850_FE;
 2160         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
 2161         rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
 2162         if (rev >= 1)
 2163                 ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
 2164         ahc->instruction_ram_size = 512;
 2165         return (0);
 2166 }
 2167 
 2168 static int
 2169 ahc_aic7860_setup(struct ahc_softc *ahc)
 2170 {
 2171         aic_dev_softc_t pci;
 2172         uint8_t rev;
 2173 
 2174         pci = ahc->dev_softc;
 2175         ahc->channel = 'A';
 2176         ahc->chip = AHC_AIC7860;
 2177         ahc->features = AHC_AIC7860_FE;
 2178         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
 2179         rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
 2180         if (rev >= 1)
 2181                 ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
 2182         ahc->instruction_ram_size = 512;
 2183         return (0);
 2184 }
 2185 
 2186 static int
 2187 ahc_apa1480_setup(struct ahc_softc *ahc)
 2188 {
 2189         int error;
 2190 
 2191         error = ahc_aic7860_setup(ahc);
 2192         if (error != 0)
 2193                 return (error);
 2194         ahc->features |= AHC_REMOVABLE;
 2195         return (0);
 2196 }
 2197 
 2198 static int
 2199 ahc_aic7870_setup(struct ahc_softc *ahc)
 2200 {
 2201 
 2202         ahc->channel = 'A';
 2203         ahc->chip = AHC_AIC7870;
 2204         ahc->features = AHC_AIC7870_FE;
 2205         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
 2206         ahc->instruction_ram_size = 512;
 2207         return (0);
 2208 }
 2209 
 2210 static int
 2211 ahc_aha394X_setup(struct ahc_softc *ahc)
 2212 {
 2213         int error;
 2214 
 2215         error = ahc_aic7870_setup(ahc);
 2216         if (error == 0)
 2217                 error = ahc_aha394XX_setup(ahc);
 2218         return (error);
 2219 }
 2220 
 2221 static int
 2222 ahc_aha398X_setup(struct ahc_softc *ahc)
 2223 {
 2224         int error;
 2225 
 2226         error = ahc_aic7870_setup(ahc);
 2227         if (error == 0)
 2228                 error = ahc_aha398XX_setup(ahc);
 2229         return (error);
 2230 }
 2231 
 2232 static int
 2233 ahc_aha494X_setup(struct ahc_softc *ahc)
 2234 {
 2235         int error;
 2236 
 2237         error = ahc_aic7870_setup(ahc);
 2238         if (error == 0)
 2239                 error = ahc_aha494XX_setup(ahc);
 2240         return (error);
 2241 }
 2242 
 2243 static int
 2244 ahc_aic7880_setup(struct ahc_softc *ahc)
 2245 {
 2246         aic_dev_softc_t pci;
 2247         uint8_t rev;
 2248 
 2249         pci = ahc->dev_softc;
 2250         ahc->channel = 'A';
 2251         ahc->chip = AHC_AIC7880;
 2252         ahc->features = AHC_AIC7880_FE;
 2253         ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
 2254         rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
 2255         if (rev >= 1) {
 2256                 ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
 2257         } else {
 2258                 ahc->bugs |= AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
 2259         }
 2260         ahc->instruction_ram_size = 512;
 2261         return (0);
 2262 }
 2263 
 2264 static int
 2265 ahc_aha2940Pro_setup(struct ahc_softc *ahc)
 2266 {
 2267 
 2268         ahc->flags |= AHC_INT50_SPEEDFLEX;
 2269         return (ahc_aic7880_setup(ahc));
 2270 }
 2271 
 2272 static int
 2273 ahc_aha394XU_setup(struct ahc_softc *ahc)
 2274 {
 2275         int error;
 2276 
 2277         error = ahc_aic7880_setup(ahc);
 2278         if (error == 0)
 2279                 error = ahc_aha394XX_setup(ahc);
 2280         return (error);
 2281 }
 2282 
 2283 static int
 2284 ahc_aha398XU_setup(struct ahc_softc *ahc)
 2285 {
 2286         int error;
 2287 
 2288         error = ahc_aic7880_setup(ahc);
 2289         if (error == 0)
 2290                 error = ahc_aha398XX_setup(ahc);
 2291         return (error);
 2292 }
 2293 
 2294 static int
 2295 ahc_aic7890_setup(struct ahc_softc *ahc)
 2296 {
 2297         aic_dev_softc_t pci;
 2298         uint8_t rev;
 2299 
 2300         pci = ahc->dev_softc;
 2301         ahc->channel = 'A';
 2302         ahc->chip = AHC_AIC7890;
 2303         ahc->features = AHC_AIC7890_FE;
 2304         ahc->flags |= AHC_NEWEEPROM_FMT;
 2305         rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
 2306         if (rev == 0)
 2307                 ahc->bugs |= AHC_AUTOFLUSH_BUG|AHC_CACHETHEN_BUG;
 2308         ahc->instruction_ram_size = 768;
 2309         return (0);
 2310 }
 2311 
 2312 static int
 2313 ahc_aic7892_setup(struct ahc_softc *ahc)
 2314 {
 2315 
 2316         ahc->channel = 'A';
 2317         ahc->chip = AHC_AIC7892;
 2318         ahc->features = AHC_AIC7892_FE;
 2319         ahc->flags |= AHC_NEWEEPROM_FMT;
 2320         ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
 2321         ahc->instruction_ram_size = 1024;
 2322         return (0);
 2323 }
 2324 
 2325 static int
 2326 ahc_aic7895_setup(struct ahc_softc *ahc)
 2327 {
 2328         aic_dev_softc_t pci;
 2329         uint8_t rev;
 2330 
 2331         pci = ahc->dev_softc;
 2332         ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
 2333         /*
 2334          * The 'C' revision of the aic7895 has a few additional features.
 2335          */
 2336         rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
 2337         if (rev >= 4) {
 2338                 ahc->chip = AHC_AIC7895C;
 2339                 ahc->features = AHC_AIC7895C_FE;
 2340         } else  {
 2341                 u_int command;
 2342 
 2343                 ahc->chip = AHC_AIC7895;
 2344                 ahc->features = AHC_AIC7895_FE;
 2345 
 2346                 /*
 2347                  * The BIOS disables the use of MWI transactions
 2348                  * since it does not have the MWI bug work around
 2349                  * we have.  Disabling MWI reduces performance, so
 2350                  * turn it on again.
 2351                  */
 2352                 command = aic_pci_read_config(pci, PCIR_COMMAND, /*bytes*/1);
 2353                 command |= PCIM_CMD_MWRICEN;
 2354                 aic_pci_write_config(pci, PCIR_COMMAND, command, /*bytes*/1);
 2355                 ahc->bugs |= AHC_PCI_MWI_BUG;
 2356         }
 2357         /*
 2358          * XXX Does CACHETHEN really not work???  What about PCI retry?
 2359          * on C level chips.  Need to test, but for now, play it safe.
 2360          */
 2361         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_PCI_2_1_RETRY_BUG
 2362                   |  AHC_CACHETHEN_BUG;
 2363 
 2364 #if 0
 2365         uint32_t devconfig;
 2366 
 2367         /*
 2368          * Cachesize must also be zero due to stray DAC
 2369          * problem when sitting behind some bridges.
 2370          */
 2371         aic_pci_write_config(pci, CSIZE_LATTIME, 0, /*bytes*/1);
 2372         devconfig = aic_pci_read_config(pci, DEVCONFIG, /*bytes*/1);
 2373         devconfig |= MRDCEN;
 2374         aic_pci_write_config(pci, DEVCONFIG, devconfig, /*bytes*/1);
 2375 #endif
 2376         ahc->flags |= AHC_NEWEEPROM_FMT;
 2377         ahc->instruction_ram_size = 512;
 2378         return (0);
 2379 }
 2380 
 2381 static int
 2382 ahc_aic7896_setup(struct ahc_softc *ahc)
 2383 {
 2384         aic_dev_softc_t pci;
 2385 
 2386         pci = ahc->dev_softc;
 2387         ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
 2388         ahc->chip = AHC_AIC7896;
 2389         ahc->features = AHC_AIC7896_FE;
 2390         ahc->flags |= AHC_NEWEEPROM_FMT;
 2391         ahc->bugs |= AHC_CACHETHEN_DIS_BUG;
 2392         ahc->instruction_ram_size = 768;
 2393         return (0);
 2394 }
 2395 
 2396 static int
 2397 ahc_aic7899_setup(struct ahc_softc *ahc)
 2398 {
 2399         aic_dev_softc_t pci;
 2400 
 2401         pci = ahc->dev_softc;
 2402         ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
 2403         ahc->chip = AHC_AIC7899;
 2404         ahc->features = AHC_AIC7899_FE;
 2405         ahc->flags |= AHC_NEWEEPROM_FMT;
 2406         ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
 2407         ahc->instruction_ram_size = 1024;
 2408         return (0);
 2409 }
 2410 
 2411 static int
 2412 ahc_aha29160C_setup(struct ahc_softc *ahc)
 2413 {
 2414         int error;
 2415 
 2416         error = ahc_aic7899_setup(ahc);
 2417         if (error != 0)
 2418                 return (error);
 2419         ahc->features |= AHC_REMOVABLE;
 2420         return (0);
 2421 }
 2422 
 2423 static int
 2424 ahc_raid_setup(struct ahc_softc *ahc)
 2425 {
 2426         printf("RAID functionality unsupported\n");
 2427         return (ENXIO);
 2428 }
 2429 
 2430 static int
 2431 ahc_aha394XX_setup(struct ahc_softc *ahc)
 2432 {
 2433         aic_dev_softc_t pci;
 2434 
 2435         pci = ahc->dev_softc;
 2436         switch (aic_get_pci_slot(pci)) {
 2437         case AHC_394X_SLOT_CHANNEL_A:
 2438                 ahc->channel = 'A';
 2439                 break;
 2440         case AHC_394X_SLOT_CHANNEL_B:
 2441                 ahc->channel = 'B';
 2442                 break;
 2443         default:
 2444                 printf("adapter at unexpected slot %d\n"
 2445                        "unable to map to a channel\n",
 2446                        aic_get_pci_slot(pci));
 2447                 ahc->channel = 'A';
 2448         }
 2449         return (0);
 2450 }
 2451 
 2452 static int
 2453 ahc_aha398XX_setup(struct ahc_softc *ahc)
 2454 {
 2455         aic_dev_softc_t pci;
 2456 
 2457         pci = ahc->dev_softc;
 2458         switch (aic_get_pci_slot(pci)) {
 2459         case AHC_398X_SLOT_CHANNEL_A:
 2460                 ahc->channel = 'A';
 2461                 break;
 2462         case AHC_398X_SLOT_CHANNEL_B:
 2463                 ahc->channel = 'B';
 2464                 break;
 2465         case AHC_398X_SLOT_CHANNEL_C:
 2466                 ahc->channel = 'C';
 2467                 break;
 2468         default:
 2469                 printf("adapter at unexpected slot %d\n"
 2470                        "unable to map to a channel\n",
 2471                        aic_get_pci_slot(pci));
 2472                 ahc->channel = 'A';
 2473                 break;
 2474         }
 2475         ahc->flags |= AHC_LARGE_SEEPROM;
 2476         return (0);
 2477 }
 2478 
 2479 static int
 2480 ahc_aha494XX_setup(struct ahc_softc *ahc)
 2481 {
 2482         aic_dev_softc_t pci;
 2483 
 2484         pci = ahc->dev_softc;
 2485         switch (aic_get_pci_slot(pci)) {
 2486         case AHC_494X_SLOT_CHANNEL_A:
 2487                 ahc->channel = 'A';
 2488                 break;
 2489         case AHC_494X_SLOT_CHANNEL_B:
 2490                 ahc->channel = 'B';
 2491                 break;
 2492         case AHC_494X_SLOT_CHANNEL_C:
 2493                 ahc->channel = 'C';
 2494                 break;
 2495         case AHC_494X_SLOT_CHANNEL_D:
 2496                 ahc->channel = 'D';
 2497                 break;
 2498         default:
 2499                 printf("adapter at unexpected slot %d\n"
 2500                        "unable to map to a channel\n",
 2501                        aic_get_pci_slot(pci));
 2502                 ahc->channel = 'A';
 2503         }
 2504         ahc->flags |= AHC_LARGE_SEEPROM;
 2505         return (0);
 2506 }

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