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  * Copyright (c) 1994-2001 Justin T. Gibbs.
    7  * Copyright (c) 2000-2001 Adaptec Inc.
    8  * All rights reserved.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions, and the following disclaimer,
   15  *    without modification.
   16  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
   17  *    substantially similar to the "NO WARRANTY" disclaimer below
   18  *    ("Disclaimer") and any redistribution must be conditioned upon
   19  *    including a substantially similar Disclaimer requirement for further
   20  *    binary redistribution.
   21  * 3. Neither the names of the above-listed copyright holders nor the names
   22  *    of any contributors may be used to endorse or promote products derived
   23  *    from this software without specific prior written permission.
   24  *
   25  * Alternatively, this software may be distributed under the terms of the
   26  * GNU General Public License ("GPL") version 2 as published by the Free
   27  * Software Foundation.
   28  *
   29  * NO WARRANTY
   30  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   31  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   32  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
   33  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   34  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   35  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   36  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   37  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   38  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
   39  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   40  * POSSIBILITY OF SUCH DAMAGES.
   41  *
   42  * $Id: //depot/aic7xxx/aic7xxx/aic7xxx_pci.c#78 $
   43  */
   44 
   45 #ifdef __linux__
   46 #include "aic7xxx_osm.h"
   47 #include "aic7xxx_inline.h"
   48 #include "aic7xxx_93cx6.h"
   49 #else
   50 #include <sys/cdefs.h>
   51 __FBSDID("$FreeBSD: releng/6.2/sys/dev/aic7xxx/aic7xxx_pci.c 139749 2005-01-06 01:43:34Z imp $");
   52 #include <dev/aic7xxx/aic7xxx_osm.h>
   53 #include <dev/aic7xxx/aic7xxx_inline.h>
   54 #include <dev/aic7xxx/aic7xxx_93cx6.h>
   55 #endif
   56 
   57 static __inline uint64_t
   58 ahc_compose_id(u_int device, u_int vendor, u_int subdevice, u_int subvendor)
   59 {
   60         uint64_t id;
   61 
   62         id = subvendor
   63            | (subdevice << 16)
   64            | ((uint64_t)vendor << 32)
   65            | ((uint64_t)device << 48);
   66 
   67         return (id);
   68 }
   69 
   70 #define ID_ALL_MASK                     0xFFFFFFFFFFFFFFFFull
   71 #define ID_DEV_VENDOR_MASK              0xFFFFFFFF00000000ull
   72 #define ID_9005_GENERIC_MASK            0xFFF0FFFF00000000ull
   73 #define ID_9005_SISL_MASK               0x000FFFFF00000000ull
   74 #define ID_9005_SISL_ID                 0x0005900500000000ull
   75 #define ID_AIC7850                      0x5078900400000000ull
   76 #define ID_AHA_2902_04_10_15_20C_30C    0x5078900478509004ull
   77 #define ID_AIC7855                      0x5578900400000000ull
   78 #define ID_AIC7859                      0x3860900400000000ull
   79 #define ID_AHA_2930CU                   0x3860900438699004ull
   80 #define ID_AIC7860                      0x6078900400000000ull
   81 #define ID_AIC7860C                     0x6078900478609004ull
   82 #define ID_AHA_1480A                    0x6075900400000000ull
   83 #define ID_AHA_2940AU_0                 0x6178900400000000ull
   84 #define ID_AHA_2940AU_1                 0x6178900478619004ull
   85 #define ID_AHA_2940AU_CN                0x2178900478219004ull
   86 #define ID_AHA_2930C_VAR                0x6038900438689004ull
   87 
   88 #define ID_AIC7870                      0x7078900400000000ull
   89 #define ID_AHA_2940                     0x7178900400000000ull
   90 #define ID_AHA_3940                     0x7278900400000000ull
   91 #define ID_AHA_398X                     0x7378900400000000ull
   92 #define ID_AHA_2944                     0x7478900400000000ull
   93 #define ID_AHA_3944                     0x7578900400000000ull
   94 #define ID_AHA_4944                     0x7678900400000000ull
   95 
   96 #define ID_AIC7880                      0x8078900400000000ull
   97 #define ID_AIC7880_B                    0x8078900478809004ull
   98 #define ID_AHA_2940U                    0x8178900400000000ull
   99 #define ID_AHA_3940U                    0x8278900400000000ull
  100 #define ID_AHA_2944U                    0x8478900400000000ull
  101 #define ID_AHA_3944U                    0x8578900400000000ull
  102 #define ID_AHA_398XU                    0x8378900400000000ull
  103 #define ID_AHA_4944U                    0x8678900400000000ull
  104 #define ID_AHA_2940UB                   0x8178900478819004ull
  105 #define ID_AHA_2930U                    0x8878900478889004ull
  106 #define ID_AHA_2940U_PRO                0x8778900478879004ull
  107 #define ID_AHA_2940U_CN                 0x0078900478009004ull
  108 
  109 #define ID_AIC7895                      0x7895900478959004ull
  110 #define ID_AIC7895_ARO                  0x7890900478939004ull
  111 #define ID_AIC7895_ARO_MASK             0xFFF0FFFFFFFFFFFFull
  112 #define ID_AHA_2940U_DUAL               0x7895900478919004ull
  113 #define ID_AHA_3940AU                   0x7895900478929004ull
  114 #define ID_AHA_3944AU                   0x7895900478949004ull
  115 
  116 #define ID_AIC7890                      0x001F9005000F9005ull
  117 #define ID_AIC7890_ARO                  0x00139005000F9005ull
  118 #define ID_AAA_131U2                    0x0013900500039005ull
  119 #define ID_AHA_2930U2                   0x0011900501819005ull
  120 #define ID_AHA_2940U2B                  0x00109005A1009005ull
  121 #define ID_AHA_2940U2_OEM               0x0010900521809005ull
  122 #define ID_AHA_2940U2                   0x00109005A1809005ull
  123 #define ID_AHA_2950U2B                  0x00109005E1009005ull
  124 
  125 #define ID_AIC7892                      0x008F9005FFFF9005ull
  126 #define ID_AIC7892_ARO                  0x00839005FFFF9005ull
  127 #define ID_AHA_29160                    0x00809005E2A09005ull
  128 #define ID_AHA_29160_CPQ                0x00809005E2A00E11ull
  129 #define ID_AHA_29160N                   0x0080900562A09005ull
  130 #define ID_AHA_29160C                   0x0080900562209005ull
  131 #define ID_AHA_29160B                   0x00809005E2209005ull
  132 #define ID_AHA_19160B                   0x0081900562A19005ull
  133 #define ID_AHA_2915_30LP                0x0082900502109005ull
  134 
  135 #define ID_AIC7896                      0x005F9005FFFF9005ull
  136 #define ID_AIC7896_ARO                  0x00539005FFFF9005ull
  137 #define ID_AHA_3950U2B_0                0x00509005FFFF9005ull
  138 #define ID_AHA_3950U2B_1                0x00509005F5009005ull
  139 #define ID_AHA_3950U2D_0                0x00519005FFFF9005ull
  140 #define ID_AHA_3950U2D_1                0x00519005B5009005ull
  141 
  142 #define ID_AIC7899                      0x00CF9005FFFF9005ull
  143 #define ID_AIC7899_ARO                  0x00C39005FFFF9005ull
  144 #define ID_AHA_3960D                    0x00C09005F6209005ull
  145 #define ID_AHA_3960D_CPQ                0x00C09005F6200E11ull
  146 
  147 #define ID_AIC7810                      0x1078900400000000ull
  148 #define ID_AIC7815                      0x7815900400000000ull
  149 
  150 #define DEVID_9005_TYPE(id) ((id) & 0xF)
  151 #define         DEVID_9005_TYPE_HBA             0x0     /* Standard Card */
  152 #define         DEVID_9005_TYPE_AAA             0x3     /* RAID Card */
  153 #define         DEVID_9005_TYPE_SISL            0x5     /* Container ROMB */
  154 #define         DEVID_9005_TYPE_MB              0xF     /* On Motherboard */
  155 
  156 #define DEVID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
  157 #define         DEVID_9005_MAXRATE_U160         0x0
  158 #define         DEVID_9005_MAXRATE_ULTRA2       0x1
  159 #define         DEVID_9005_MAXRATE_ULTRA        0x2
  160 #define         DEVID_9005_MAXRATE_FAST         0x3
  161 
  162 #define DEVID_9005_MFUNC(id) (((id) & 0x40) >> 6)
  163 
  164 #define DEVID_9005_CLASS(id) (((id) & 0xFF00) >> 8)
  165 #define         DEVID_9005_CLASS_SPI            0x0     /* Parallel SCSI */
  166 
  167 #define SUBID_9005_TYPE(id) ((id) & 0xF)
  168 #define         SUBID_9005_TYPE_MB              0xF     /* On Motherboard */
  169 #define         SUBID_9005_TYPE_CARD            0x0     /* Standard Card */
  170 #define         SUBID_9005_TYPE_LCCARD          0x1     /* Low Cost Card */
  171 #define         SUBID_9005_TYPE_RAID            0x3     /* Combined with Raid */
  172 
  173 #define SUBID_9005_TYPE_KNOWN(id)                       \
  174           ((((id) & 0xF) == SUBID_9005_TYPE_MB)         \
  175         || (((id) & 0xF) == SUBID_9005_TYPE_CARD)       \
  176         || (((id) & 0xF) == SUBID_9005_TYPE_LCCARD)     \
  177         || (((id) & 0xF) == SUBID_9005_TYPE_RAID))
  178 
  179 #define SUBID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
  180 #define         SUBID_9005_MAXRATE_ULTRA2       0x0
  181 #define         SUBID_9005_MAXRATE_ULTRA        0x1
  182 #define         SUBID_9005_MAXRATE_U160         0x2
  183 #define         SUBID_9005_MAXRATE_RESERVED     0x3
  184 
  185 #define SUBID_9005_SEEPTYPE(id)                                         \
  186         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
  187          ? ((id) & 0xC0) >> 6                                           \
  188          : ((id) & 0x300) >> 8)
  189 #define         SUBID_9005_SEEPTYPE_NONE        0x0
  190 #define         SUBID_9005_SEEPTYPE_1K          0x1
  191 #define         SUBID_9005_SEEPTYPE_2K_4K       0x2
  192 #define         SUBID_9005_SEEPTYPE_RESERVED    0x3
  193 #define SUBID_9005_AUTOTERM(id)                                         \
  194         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
  195          ? (((id) & 0x400) >> 10) == 0                                  \
  196          : (((id) & 0x40) >> 6) == 0)
  197 
  198 #define SUBID_9005_NUMCHAN(id)                                          \
  199         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
  200          ? ((id) & 0x300) >> 8                                          \
  201          : ((id) & 0xC00) >> 10)
  202 
  203 #define SUBID_9005_LEGACYCONN(id)                                       \
  204         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
  205          ? 0                                                            \
  206          : ((id) & 0x80) >> 7)
  207 
  208 #define SUBID_9005_MFUNCENB(id)                                         \
  209         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
  210          ? ((id) & 0x800) >> 11                                         \
  211          : ((id) & 0x1000) >> 12)
  212 /*
  213  * Informational only. Should use chip register to be
  214  * certain, but may be use in identification strings.
  215  */
  216 #define SUBID_9005_CARD_SCSIWIDTH_MASK  0x2000
  217 #define SUBID_9005_CARD_PCIWIDTH_MASK   0x4000
  218 #define SUBID_9005_CARD_SEDIFF_MASK     0x8000
  219 
  220 static ahc_device_setup_t ahc_aic785X_setup;
  221 static ahc_device_setup_t ahc_aic7860_setup;
  222 static ahc_device_setup_t ahc_apa1480_setup;
  223 static ahc_device_setup_t ahc_aic7870_setup;
  224 static ahc_device_setup_t ahc_aha394X_setup;
  225 static ahc_device_setup_t ahc_aha494X_setup;
  226 static ahc_device_setup_t ahc_aha398X_setup;
  227 static ahc_device_setup_t ahc_aic7880_setup;
  228 static ahc_device_setup_t ahc_aha2940Pro_setup;
  229 static ahc_device_setup_t ahc_aha394XU_setup;
  230 static ahc_device_setup_t ahc_aha398XU_setup;
  231 static ahc_device_setup_t ahc_aic7890_setup;
  232 static ahc_device_setup_t ahc_aic7892_setup;
  233 static ahc_device_setup_t ahc_aic7895_setup;
  234 static ahc_device_setup_t ahc_aic7896_setup;
  235 static ahc_device_setup_t ahc_aic7899_setup;
  236 static ahc_device_setup_t ahc_aha29160C_setup;
  237 static ahc_device_setup_t ahc_raid_setup;
  238 static ahc_device_setup_t ahc_aha394XX_setup;
  239 static ahc_device_setup_t ahc_aha494XX_setup;
  240 static ahc_device_setup_t ahc_aha398XX_setup;
  241 
  242 struct ahc_pci_identity ahc_pci_ident_table [] =
  243 {
  244         /* aic7850 based controllers */
  245         {
  246                 ID_AHA_2902_04_10_15_20C_30C,
  247                 ID_ALL_MASK,
  248                 "Adaptec 2902/04/10/15/20C/30C SCSI adapter",
  249                 ahc_aic785X_setup
  250         },
  251         /* aic7860 based controllers */
  252         {
  253                 ID_AHA_2930CU,
  254                 ID_ALL_MASK,
  255                 "Adaptec 2930CU SCSI adapter",
  256                 ahc_aic7860_setup
  257         },
  258         {
  259                 ID_AHA_1480A & ID_DEV_VENDOR_MASK,
  260                 ID_DEV_VENDOR_MASK,
  261                 "Adaptec 1480A Ultra SCSI adapter",
  262                 ahc_apa1480_setup
  263         },
  264         {
  265                 ID_AHA_2940AU_0 & ID_DEV_VENDOR_MASK,
  266                 ID_DEV_VENDOR_MASK,
  267                 "Adaptec 2940A Ultra SCSI adapter",
  268                 ahc_aic7860_setup
  269         },
  270         {
  271                 ID_AHA_2940AU_CN & ID_DEV_VENDOR_MASK,
  272                 ID_DEV_VENDOR_MASK,
  273                 "Adaptec 2940A/CN Ultra SCSI adapter",
  274                 ahc_aic7860_setup
  275         },
  276         {
  277                 ID_AHA_2930C_VAR & ID_DEV_VENDOR_MASK,
  278                 ID_DEV_VENDOR_MASK,
  279                 "Adaptec 2930C Ultra SCSI adapter (VAR)",
  280                 ahc_aic7860_setup
  281         },
  282         /* aic7870 based controllers */
  283         {
  284                 ID_AHA_2940,
  285                 ID_ALL_MASK,
  286                 "Adaptec 2940 SCSI adapter",
  287                 ahc_aic7870_setup
  288         },
  289         {
  290                 ID_AHA_3940,
  291                 ID_ALL_MASK,
  292                 "Adaptec 3940 SCSI adapter",
  293                 ahc_aha394X_setup
  294         },
  295         {
  296                 ID_AHA_398X,
  297                 ID_ALL_MASK,
  298                 "Adaptec 398X SCSI RAID adapter",
  299                 ahc_aha398X_setup
  300         },
  301         {
  302                 ID_AHA_2944,
  303                 ID_ALL_MASK,
  304                 "Adaptec 2944 SCSI adapter",
  305                 ahc_aic7870_setup
  306         },
  307         {
  308                 ID_AHA_3944,
  309                 ID_ALL_MASK,
  310                 "Adaptec 3944 SCSI adapter",
  311                 ahc_aha394X_setup
  312         },
  313         {
  314                 ID_AHA_4944,
  315                 ID_ALL_MASK,
  316                 "Adaptec 4944 SCSI adapter",
  317                 ahc_aha494X_setup
  318         },
  319         /* aic7880 based controllers */
  320         {
  321                 ID_AHA_2940U & ID_DEV_VENDOR_MASK,
  322                 ID_DEV_VENDOR_MASK,
  323                 "Adaptec 2940 Ultra SCSI adapter",
  324                 ahc_aic7880_setup
  325         },
  326         {
  327                 ID_AHA_3940U & ID_DEV_VENDOR_MASK,
  328                 ID_DEV_VENDOR_MASK,
  329                 "Adaptec 3940 Ultra SCSI adapter",
  330                 ahc_aha394XU_setup
  331         },
  332         {
  333                 ID_AHA_2944U & ID_DEV_VENDOR_MASK,
  334                 ID_DEV_VENDOR_MASK,
  335                 "Adaptec 2944 Ultra SCSI adapter",
  336                 ahc_aic7880_setup
  337         },
  338         {
  339                 ID_AHA_3944U & ID_DEV_VENDOR_MASK,
  340                 ID_DEV_VENDOR_MASK,
  341                 "Adaptec 3944 Ultra SCSI adapter",
  342                 ahc_aha394XU_setup
  343         },
  344         {
  345                 ID_AHA_398XU & ID_DEV_VENDOR_MASK,
  346                 ID_DEV_VENDOR_MASK,
  347                 "Adaptec 398X Ultra SCSI RAID adapter",
  348                 ahc_aha398XU_setup
  349         },
  350         {
  351                 /*
  352                  * XXX Don't know the slot numbers
  353                  * so we can't identify channels
  354                  */
  355                 ID_AHA_4944U & ID_DEV_VENDOR_MASK,
  356                 ID_DEV_VENDOR_MASK,
  357                 "Adaptec 4944 Ultra SCSI adapter",
  358                 ahc_aic7880_setup
  359         },
  360         {
  361                 ID_AHA_2930U & ID_DEV_VENDOR_MASK,
  362                 ID_DEV_VENDOR_MASK,
  363                 "Adaptec 2930 Ultra SCSI adapter",
  364                 ahc_aic7880_setup
  365         },
  366         {
  367                 ID_AHA_2940U_PRO & ID_DEV_VENDOR_MASK,
  368                 ID_DEV_VENDOR_MASK,
  369                 "Adaptec 2940 Pro Ultra SCSI adapter",
  370                 ahc_aha2940Pro_setup
  371         },
  372         {
  373                 ID_AHA_2940U_CN & ID_DEV_VENDOR_MASK,
  374                 ID_DEV_VENDOR_MASK,
  375                 "Adaptec 2940/CN Ultra SCSI adapter",
  376                 ahc_aic7880_setup
  377         },
  378         /* Ignore all SISL (AAC on MB) based controllers. */
  379         {
  380                 ID_9005_SISL_ID,
  381                 ID_9005_SISL_MASK,
  382                 NULL,
  383                 NULL
  384         },
  385         /* aic7890 based controllers */
  386         {
  387                 ID_AHA_2930U2,
  388                 ID_ALL_MASK,
  389                 "Adaptec 2930 Ultra2 SCSI adapter",
  390                 ahc_aic7890_setup
  391         },
  392         {
  393                 ID_AHA_2940U2B,
  394                 ID_ALL_MASK,
  395                 "Adaptec 2940B Ultra2 SCSI adapter",
  396                 ahc_aic7890_setup
  397         },
  398         {
  399                 ID_AHA_2940U2_OEM,
  400                 ID_ALL_MASK,
  401                 "Adaptec 2940 Ultra2 SCSI adapter (OEM)",
  402                 ahc_aic7890_setup
  403         },
  404         {
  405                 ID_AHA_2940U2,
  406                 ID_ALL_MASK,
  407                 "Adaptec 2940 Ultra2 SCSI adapter",
  408                 ahc_aic7890_setup
  409         },
  410         {
  411                 ID_AHA_2950U2B,
  412                 ID_ALL_MASK,
  413                 "Adaptec 2950 Ultra2 SCSI adapter",
  414                 ahc_aic7890_setup
  415         },
  416         {
  417                 ID_AIC7890_ARO,
  418                 ID_ALL_MASK,
  419                 "Adaptec aic7890/91 Ultra2 SCSI adapter (ARO)",
  420                 ahc_aic7890_setup
  421         },
  422         {
  423                 ID_AAA_131U2,
  424                 ID_ALL_MASK,
  425                 "Adaptec AAA-131 Ultra2 RAID adapter",
  426                 ahc_aic7890_setup
  427         },
  428         /* aic7892 based controllers */
  429         {
  430                 ID_AHA_29160,
  431                 ID_ALL_MASK,
  432                 "Adaptec 29160 Ultra160 SCSI adapter",
  433                 ahc_aic7892_setup
  434         },
  435         {
  436                 ID_AHA_29160_CPQ,
  437                 ID_ALL_MASK,
  438                 "Adaptec (Compaq OEM) 29160 Ultra160 SCSI adapter",
  439                 ahc_aic7892_setup
  440         },
  441         {
  442                 ID_AHA_29160N,
  443                 ID_ALL_MASK,
  444                 "Adaptec 29160N Ultra160 SCSI adapter",
  445                 ahc_aic7892_setup
  446         },
  447         {
  448                 ID_AHA_29160C,
  449                 ID_ALL_MASK,
  450                 "Adaptec 29160C Ultra160 SCSI adapter",
  451                 ahc_aha29160C_setup
  452         },
  453         {
  454                 ID_AHA_29160B,
  455                 ID_ALL_MASK,
  456                 "Adaptec 29160B Ultra160 SCSI adapter",
  457                 ahc_aic7892_setup
  458         },
  459         {
  460                 ID_AHA_19160B,
  461                 ID_ALL_MASK,
  462                 "Adaptec 19160B Ultra160 SCSI adapter",
  463                 ahc_aic7892_setup
  464         },
  465         {
  466                 ID_AIC7892_ARO,
  467                 ID_ALL_MASK,
  468                 "Adaptec aic7892 Ultra160 SCSI adapter (ARO)",
  469                 ahc_aic7892_setup
  470         },
  471         {
  472                 ID_AHA_2915_30LP,
  473                 ID_ALL_MASK,
  474                 "Adaptec 2915/30LP Ultra160 SCSI adapter",
  475                 ahc_aic7892_setup
  476         },
  477         /* aic7895 based controllers */ 
  478         {
  479                 ID_AHA_2940U_DUAL,
  480                 ID_ALL_MASK,
  481                 "Adaptec 2940/DUAL Ultra SCSI adapter",
  482                 ahc_aic7895_setup
  483         },
  484         {
  485                 ID_AHA_3940AU,
  486                 ID_ALL_MASK,
  487                 "Adaptec 3940A Ultra SCSI adapter",
  488                 ahc_aic7895_setup
  489         },
  490         {
  491                 ID_AHA_3944AU,
  492                 ID_ALL_MASK,
  493                 "Adaptec 3944A Ultra SCSI adapter",
  494                 ahc_aic7895_setup
  495         },
  496         {
  497                 ID_AIC7895_ARO,
  498                 ID_AIC7895_ARO_MASK,
  499                 "Adaptec aic7895 Ultra SCSI adapter (ARO)",
  500                 ahc_aic7895_setup
  501         },
  502         /* aic7896/97 based controllers */      
  503         {
  504                 ID_AHA_3950U2B_0,
  505                 ID_ALL_MASK,
  506                 "Adaptec 3950B Ultra2 SCSI adapter",
  507                 ahc_aic7896_setup
  508         },
  509         {
  510                 ID_AHA_3950U2B_1,
  511                 ID_ALL_MASK,
  512                 "Adaptec 3950B Ultra2 SCSI adapter",
  513                 ahc_aic7896_setup
  514         },
  515         {
  516                 ID_AHA_3950U2D_0,
  517                 ID_ALL_MASK,
  518                 "Adaptec 3950D Ultra2 SCSI adapter",
  519                 ahc_aic7896_setup
  520         },
  521         {
  522                 ID_AHA_3950U2D_1,
  523                 ID_ALL_MASK,
  524                 "Adaptec 3950D Ultra2 SCSI adapter",
  525                 ahc_aic7896_setup
  526         },
  527         {
  528                 ID_AIC7896_ARO,
  529                 ID_ALL_MASK,
  530                 "Adaptec aic7896/97 Ultra2 SCSI adapter (ARO)",
  531                 ahc_aic7896_setup
  532         },
  533         /* aic7899 based controllers */ 
  534         {
  535                 ID_AHA_3960D,
  536                 ID_ALL_MASK,
  537                 "Adaptec 3960D Ultra160 SCSI adapter",
  538                 ahc_aic7899_setup
  539         },
  540         {
  541                 ID_AHA_3960D_CPQ,
  542                 ID_ALL_MASK,
  543                 "Adaptec (Compaq OEM) 3960D Ultra160 SCSI adapter",
  544                 ahc_aic7899_setup
  545         },
  546         {
  547                 ID_AIC7899_ARO,
  548                 ID_ALL_MASK,
  549                 "Adaptec aic7899 Ultra160 SCSI adapter (ARO)",
  550                 ahc_aic7899_setup
  551         },
  552         /* Generic chip probes for devices we don't know 'exactly' */
  553         {
  554                 ID_AIC7850 & ID_DEV_VENDOR_MASK,
  555                 ID_DEV_VENDOR_MASK,
  556                 "Adaptec aic7850 SCSI adapter",
  557                 ahc_aic785X_setup
  558         },
  559         {
  560                 ID_AIC7855 & ID_DEV_VENDOR_MASK,
  561                 ID_DEV_VENDOR_MASK,
  562                 "Adaptec aic7855 SCSI adapter",
  563                 ahc_aic785X_setup
  564         },
  565         {
  566                 ID_AIC7859 & ID_DEV_VENDOR_MASK,
  567                 ID_DEV_VENDOR_MASK,
  568                 "Adaptec aic7859 SCSI adapter",
  569                 ahc_aic7860_setup
  570         },
  571         {
  572                 ID_AIC7860 & ID_DEV_VENDOR_MASK,
  573                 ID_DEV_VENDOR_MASK,
  574                 "Adaptec aic7860 Ultra SCSI adapter",
  575                 ahc_aic7860_setup
  576         },
  577         {
  578                 ID_AIC7870 & ID_DEV_VENDOR_MASK,
  579                 ID_DEV_VENDOR_MASK,
  580                 "Adaptec aic7870 SCSI adapter",
  581                 ahc_aic7870_setup
  582         },
  583         {
  584                 ID_AIC7880 & ID_DEV_VENDOR_MASK,
  585                 ID_DEV_VENDOR_MASK,
  586                 "Adaptec aic7880 Ultra SCSI adapter",
  587                 ahc_aic7880_setup
  588         },
  589         {
  590                 ID_AIC7890 & ID_9005_GENERIC_MASK,
  591                 ID_9005_GENERIC_MASK,
  592                 "Adaptec aic7890/91 Ultra2 SCSI adapter",
  593                 ahc_aic7890_setup
  594         },
  595         {
  596                 ID_AIC7892 & ID_9005_GENERIC_MASK,
  597                 ID_9005_GENERIC_MASK,
  598                 "Adaptec aic7892 Ultra160 SCSI adapter",
  599                 ahc_aic7892_setup
  600         },
  601         {
  602                 ID_AIC7895 & ID_DEV_VENDOR_MASK,
  603                 ID_DEV_VENDOR_MASK,
  604                 "Adaptec aic7895 Ultra SCSI adapter",
  605                 ahc_aic7895_setup
  606         },
  607         {
  608                 ID_AIC7896 & ID_9005_GENERIC_MASK,
  609                 ID_9005_GENERIC_MASK,
  610                 "Adaptec aic7896/97 Ultra2 SCSI adapter",
  611                 ahc_aic7896_setup
  612         },
  613         {
  614                 ID_AIC7899 & ID_9005_GENERIC_MASK,
  615                 ID_9005_GENERIC_MASK,
  616                 "Adaptec aic7899 Ultra160 SCSI adapter",
  617                 ahc_aic7899_setup
  618         },
  619         {
  620                 ID_AIC7810 & ID_DEV_VENDOR_MASK,
  621                 ID_DEV_VENDOR_MASK,
  622                 "Adaptec aic7810 RAID memory controller",
  623                 ahc_raid_setup
  624         },
  625         {
  626                 ID_AIC7815 & ID_DEV_VENDOR_MASK,
  627                 ID_DEV_VENDOR_MASK,
  628                 "Adaptec aic7815 RAID memory controller",
  629                 ahc_raid_setup
  630         }
  631 };
  632 
  633 const u_int ahc_num_pci_devs = NUM_ELEMENTS(ahc_pci_ident_table);
  634                 
  635 #define AHC_394X_SLOT_CHANNEL_A 4
  636 #define AHC_394X_SLOT_CHANNEL_B 5
  637 
  638 #define AHC_398X_SLOT_CHANNEL_A 4
  639 #define AHC_398X_SLOT_CHANNEL_B 8
  640 #define AHC_398X_SLOT_CHANNEL_C 12
  641 
  642 #define AHC_494X_SLOT_CHANNEL_A 4
  643 #define AHC_494X_SLOT_CHANNEL_B 5
  644 #define AHC_494X_SLOT_CHANNEL_C 6
  645 #define AHC_494X_SLOT_CHANNEL_D 7
  646 
  647 #define DEVCONFIG               0x40
  648 #define         PCIERRGENDIS    0x80000000ul
  649 #define         SCBSIZE32       0x00010000ul    /* aic789X only */
  650 #define         REXTVALID       0x00001000ul    /* ultra cards only */
  651 #define         MPORTMODE       0x00000400ul    /* aic7870+ only */
  652 #define         RAMPSM          0x00000200ul    /* aic7870+ only */
  653 #define         VOLSENSE        0x00000100ul
  654 #define         PCI64BIT        0x00000080ul    /* 64Bit PCI bus (Ultra2 Only)*/
  655 #define         SCBRAMSEL       0x00000080ul
  656 #define         MRDCEN          0x00000040ul
  657 #define         EXTSCBTIME      0x00000020ul    /* aic7870 only */
  658 #define         EXTSCBPEN       0x00000010ul    /* aic7870 only */
  659 #define         BERREN          0x00000008ul
  660 #define         DACEN           0x00000004ul
  661 #define         STPWLEVEL       0x00000002ul
  662 #define         DIFACTNEGEN     0x00000001ul    /* aic7870 only */
  663 
  664 #define CSIZE_LATTIME           0x0c
  665 #define         CACHESIZE       0x0000003ful    /* only 5 bits */
  666 #define         LATTIME         0x0000ff00ul
  667 
  668 /* PCI STATUS definitions */
  669 #define DPE     0x80
  670 #define SSE     0x40
  671 #define RMA     0x20
  672 #define RTA     0x10
  673 #define STA     0x08
  674 #define DPR     0x01
  675 
  676 static int ahc_9005_subdevinfo_valid(uint16_t vendor, uint16_t device,
  677                                      uint16_t subvendor, uint16_t subdevice);
  678 static int ahc_ext_scbram_present(struct ahc_softc *ahc);
  679 static void ahc_scbram_config(struct ahc_softc *ahc, int enable,
  680                                   int pcheck, int fast, int large);
  681 static void ahc_probe_ext_scbram(struct ahc_softc *ahc);
  682 static void check_extport(struct ahc_softc *ahc, u_int *sxfrctl1);
  683 static void ahc_parse_pci_eeprom(struct ahc_softc *ahc,
  684                                  struct seeprom_config *sc);
  685 static void configure_termination(struct ahc_softc *ahc,
  686                                   struct seeprom_descriptor *sd,
  687                                   u_int adapter_control,
  688                                   u_int *sxfrctl1);
  689 
  690 static void ahc_new_term_detect(struct ahc_softc *ahc,
  691                                 int *enableSEC_low,
  692                                 int *enableSEC_high,
  693                                 int *enablePRI_low,
  694                                 int *enablePRI_high,
  695                                 int *eeprom_present);
  696 static void aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
  697                                  int *internal68_present,
  698                                  int *externalcable_present,
  699                                  int *eeprom_present);
  700 static void aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
  701                                  int *externalcable_present,
  702                                  int *eeprom_present);
  703 static void    write_brdctl(struct ahc_softc *ahc, uint8_t value);
  704 static uint8_t read_brdctl(struct ahc_softc *ahc);
  705 static void ahc_pci_intr(struct ahc_softc *ahc);
  706 static int  ahc_pci_chip_init(struct ahc_softc *ahc);
  707 static int  ahc_pci_suspend(struct ahc_softc *ahc);
  708 static int  ahc_pci_resume(struct ahc_softc *ahc);
  709 
  710 static int
  711 ahc_9005_subdevinfo_valid(uint16_t device, uint16_t vendor,
  712                           uint16_t subdevice, uint16_t subvendor)
  713 {
  714         int result;
  715 
  716         /* Default to invalid. */
  717         result = 0;
  718         if (vendor == 0x9005
  719          && subvendor == 0x9005
  720          && subdevice != device
  721          && SUBID_9005_TYPE_KNOWN(subdevice) != 0) {
  722 
  723                 switch (SUBID_9005_TYPE(subdevice)) {
  724                 case SUBID_9005_TYPE_MB:
  725                         break;
  726                 case SUBID_9005_TYPE_CARD:
  727                 case SUBID_9005_TYPE_LCCARD:
  728                         /*
  729                          * Currently only trust Adaptec cards to
  730                          * get the sub device info correct.
  731                          */
  732                         if (DEVID_9005_TYPE(device) == DEVID_9005_TYPE_HBA)
  733                                 result = 1;
  734                         break;
  735                 case SUBID_9005_TYPE_RAID:
  736                         break;
  737                 default:
  738                         break;
  739                 }
  740         }
  741         return (result);
  742 }
  743 
  744 struct ahc_pci_identity *
  745 ahc_find_pci_device(aic_dev_softc_t pci)
  746 {
  747         uint64_t  full_id;
  748         uint16_t  device;
  749         uint16_t  vendor;
  750         uint16_t  subdevice;
  751         uint16_t  subvendor;
  752         struct    ahc_pci_identity *entry;
  753         u_int     i;
  754 
  755         vendor = aic_pci_read_config(pci, PCIR_DEVVENDOR, /*bytes*/2);
  756         device = aic_pci_read_config(pci, PCIR_DEVICE, /*bytes*/2);
  757         subvendor = aic_pci_read_config(pci, PCIR_SUBVEND_0, /*bytes*/2);
  758         subdevice = aic_pci_read_config(pci, PCIR_SUBDEV_0, /*bytes*/2);
  759         full_id = ahc_compose_id(device, vendor, subdevice, subvendor);
  760 
  761         /*
  762          * If the second function is not hooked up, ignore it.
  763          * Unfortunately, not all MB vendors implement the
  764          * subdevice ID as per the Adaptec spec, so do our best
  765          * to sanity check it prior to accepting the subdevice
  766          * ID as valid.
  767          */
  768         if (aic_get_pci_function(pci) > 0
  769          && ahc_9005_subdevinfo_valid(vendor, device, subvendor, subdevice)
  770          && SUBID_9005_MFUNCENB(subdevice) == 0)
  771                 return (NULL);
  772 
  773         for (i = 0; i < ahc_num_pci_devs; i++) {
  774                 entry = &ahc_pci_ident_table[i];
  775                 if (entry->full_id == (full_id & entry->id_mask)) {
  776                         /* Honor exclusion entries. */
  777                         if (entry->name == NULL)
  778                                 return (NULL);
  779                         return (entry);
  780                 }
  781         }
  782         return (NULL);
  783 }
  784 
  785 int
  786 ahc_pci_config(struct ahc_softc *ahc, struct ahc_pci_identity *entry)
  787 {
  788         u_long   l;
  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 
  829                 if (bootverbose)
  830                         printf("%s: Enabling 39Bit Addressing\n",
  831                                ahc_name(ahc));
  832                 devconfig |= DACEN;
  833         }
  834         
  835         /* Ensure that pci error generation, a test feature, is disabled. */
  836         devconfig |= PCIERRGENDIS;
  837 
  838         aic_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
  839 
  840         /* Ensure busmastering is enabled */
  841         command = aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
  842         command |= PCIM_CMD_BUSMASTEREN;
  843 
  844         aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND, command, /*bytes*/2);
  845 
  846         /* On all PCI adapters, we allow SCB paging */
  847         ahc->flags |= AHC_PAGESCBS;
  848 
  849         error = ahc_softc_init(ahc);
  850         if (error != 0)
  851                 return (error);
  852 
  853         /*
  854          * Disable PCI parity error checking.  Users typically
  855          * do this to work around broken PCI chipsets that get
  856          * the parity timing wrong and thus generate lots of spurious
  857          * errors.  The chip only allows us to disable *all* parity
  858          * error reporting when doing this, so CIO bus, scb ram, and
  859          * scratch ram parity errors will be ignored too.
  860          */
  861         if ((ahc->flags & AHC_DISABLE_PCI_PERR) != 0)
  862                 ahc->seqctl |= FAILDIS;
  863 
  864         ahc->bus_intr = ahc_pci_intr;
  865         ahc->bus_chip_init = ahc_pci_chip_init;
  866         ahc->bus_suspend = ahc_pci_suspend;
  867         ahc->bus_resume = ahc_pci_resume;
  868 
  869         /* Remeber how the card was setup in case there is no SEEPROM */
  870         if ((ahc_inb(ahc, HCNTRL) & POWRDN) == 0) {
  871                 ahc_pause(ahc);
  872                 if ((ahc->features & AHC_ULTRA2) != 0)
  873                         our_id = ahc_inb(ahc, SCSIID_ULTRA2) & OID;
  874                 else
  875                         our_id = ahc_inb(ahc, SCSIID) & OID;
  876                 sxfrctl1 = ahc_inb(ahc, SXFRCTL1) & STPWEN;
  877                 scsiseq = ahc_inb(ahc, SCSISEQ);
  878         } else {
  879                 sxfrctl1 = STPWEN;
  880                 our_id = 7;
  881                 scsiseq = 0;
  882         }
  883 
  884         error = ahc_reset(ahc, /*reinit*/FALSE);
  885         if (error != 0)
  886                 return (ENXIO);
  887 
  888         if ((ahc->features & AHC_DT) != 0) {
  889                 u_int sfunct;
  890 
  891                 /* Perform ALT-Mode Setup */
  892                 sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
  893                 ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
  894                 ahc_outb(ahc, OPTIONMODE,
  895                          OPTIONMODE_DEFAULTS|AUTOACKEN|BUSFREEREV|EXPPHASEDIS);
  896                 ahc_outb(ahc, SFUNCT, sfunct);
  897 
  898                 /* Normal mode setup */
  899                 ahc_outb(ahc, CRCCONTROL1, CRCVALCHKEN|CRCENDCHKEN|CRCREQCHKEN
  900                                           |TARGCRCENDEN);
  901         }
  902 
  903         dscommand0 = ahc_inb(ahc, DSCOMMAND0);
  904         dscommand0 |= MPARCKEN|CACHETHEN;
  905         if ((ahc->features & AHC_ULTRA2) != 0) {
  906 
  907                 /*
  908                  * DPARCKEN doesn't work correctly on
  909                  * some MBs so don't use it.
  910                  */
  911                 dscommand0 &= ~DPARCKEN;
  912         }
  913 
  914         /*
  915          * Handle chips that must have cache line
  916          * streaming (dis/en)abled.
  917          */
  918         if ((ahc->bugs & AHC_CACHETHEN_DIS_BUG) != 0)
  919                 dscommand0 |= CACHETHEN;
  920 
  921         if ((ahc->bugs & AHC_CACHETHEN_BUG) != 0)
  922                 dscommand0 &= ~CACHETHEN;
  923 
  924         ahc_outb(ahc, DSCOMMAND0, dscommand0);
  925 
  926         ahc->pci_cachesize =
  927             aic_pci_read_config(ahc->dev_softc, CSIZE_LATTIME,
  928                                 /*bytes*/1) & CACHESIZE;
  929         ahc->pci_cachesize *= 4;
  930 
  931         if ((ahc->bugs & AHC_PCI_2_1_RETRY_BUG) != 0
  932          && ahc->pci_cachesize == 4) {
  933 
  934                 aic_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
  935                                      0, /*bytes*/1);
  936                 ahc->pci_cachesize = 0;
  937         }
  938 
  939         /*
  940          * We cannot perform ULTRA speeds without the presense
  941          * of the external precision resistor.
  942          */
  943         if ((ahc->features & AHC_ULTRA) != 0) {
  944                 uint32_t devconfig;
  945 
  946                 devconfig = aic_pci_read_config(ahc->dev_softc,
  947                                                 DEVCONFIG, /*bytes*/4);
  948                 if ((devconfig & REXTVALID) == 0)
  949                         ahc->features &= ~AHC_ULTRA;
  950         }
  951 
  952         /* See if we have a SEEPROM and perform auto-term */
  953         check_extport(ahc, &sxfrctl1);
  954 
  955         /*
  956          * Take the LED out of diagnostic mode
  957          */
  958         sblkctl = ahc_inb(ahc, SBLKCTL);
  959         ahc_outb(ahc, SBLKCTL, (sblkctl & ~(DIAGLEDEN|DIAGLEDON)));
  960 
  961         if ((ahc->features & AHC_ULTRA2) != 0) {
  962                 ahc_outb(ahc, DFF_THRSH, RD_DFTHRSH_MAX|WR_DFTHRSH_MAX);
  963         } else {
  964                 ahc_outb(ahc, DSPCISTATUS, DFTHRSH_100);
  965         }
  966 
  967         if (ahc->flags & AHC_USEDEFAULTS) {
  968                 /*
  969                  * PCI Adapter default setup
  970                  * Should only be used if the adapter does not have
  971                  * a SEEPROM.
  972                  */
  973                 /* See if someone else set us up already */
  974                 if ((ahc->flags & AHC_NO_BIOS_INIT) == 0
  975                  && scsiseq != 0) {
  976                         printf("%s: Using left over BIOS settings\n",
  977                                 ahc_name(ahc));
  978                         ahc->flags &= ~AHC_USEDEFAULTS;
  979                         ahc->flags |= AHC_BIOS_ENABLED;
  980                 } else {
  981                         /*
  982                          * Assume only one connector and always turn
  983                          * on termination.
  984                          */
  985                         our_id = 0x07;
  986                         sxfrctl1 = STPWEN;
  987                 }
  988                 ahc_outb(ahc, SCSICONF, our_id|ENSPCHK|RESET_SCSI);
  989 
  990                 ahc->our_id = our_id;
  991         }
  992 
  993         /*
  994          * Take a look to see if we have external SRAM.
  995          * We currently do not attempt to use SRAM that is
  996          * shared among multiple controllers.
  997          */
  998         ahc_probe_ext_scbram(ahc);
  999 
 1000         /*
 1001          * Record our termination setting for the
 1002          * generic initialization routine.
 1003          */
 1004         if ((sxfrctl1 & STPWEN) != 0)
 1005                 ahc->flags |= AHC_TERM_ENB_A;
 1006 
 1007         /*
 1008          * Save chip register configuration data for chip resets
 1009          * that occur during runtime and resume events.
 1010          */
 1011         ahc->bus_softc.pci_softc.devconfig =
 1012             aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
 1013         ahc->bus_softc.pci_softc.command =
 1014             aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/1);
 1015         ahc->bus_softc.pci_softc.csize_lattime =
 1016             aic_pci_read_config(ahc->dev_softc, CSIZE_LATTIME, /*bytes*/1);
 1017         ahc->bus_softc.pci_softc.dscommand0 = ahc_inb(ahc, DSCOMMAND0);
 1018         ahc->bus_softc.pci_softc.dspcistatus = ahc_inb(ahc, DSPCISTATUS);
 1019         if ((ahc->features & AHC_DT) != 0) {
 1020                 u_int sfunct;
 1021 
 1022                 sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
 1023                 ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
 1024                 ahc->bus_softc.pci_softc.optionmode = ahc_inb(ahc, OPTIONMODE);
 1025                 ahc->bus_softc.pci_softc.targcrccnt = ahc_inw(ahc, TARGCRCCNT);
 1026                 ahc_outb(ahc, SFUNCT, sfunct);
 1027                 ahc->bus_softc.pci_softc.crccontrol1 =
 1028                     ahc_inb(ahc, CRCCONTROL1);
 1029         }
 1030         if ((ahc->features & AHC_MULTI_FUNC) != 0)
 1031                 ahc->bus_softc.pci_softc.scbbaddr = ahc_inb(ahc, SCBBADDR);
 1032 
 1033         if ((ahc->features & AHC_ULTRA2) != 0)
 1034                 ahc->bus_softc.pci_softc.dff_thrsh = ahc_inb(ahc, DFF_THRSH);
 1035 
 1036         /* Core initialization */
 1037         error = ahc_init(ahc);
 1038         if (error != 0)
 1039                 return (error);
 1040 
 1041         /*
 1042          * Allow interrupts now that we are completely setup.
 1043          */
 1044         error = ahc_pci_map_int(ahc);
 1045         if (error != 0)
 1046                 return (error);
 1047 
 1048         ahc_list_lock(&l);
 1049         /*
 1050          * Link this softc in with all other ahc instances.
 1051          */
 1052         ahc_softc_insert(ahc);
 1053         ahc_list_unlock(&l);
 1054         return (0);
 1055 }
 1056 
 1057 /*
 1058  * Test for the presense of external sram in an
 1059  * "unshared" configuration.
 1060  */
 1061 static int
 1062 ahc_ext_scbram_present(struct ahc_softc *ahc)
 1063 {
 1064         u_int chip;
 1065         int ramps;
 1066         int single_user;
 1067         uint32_t devconfig;
 1068 
 1069         chip = ahc->chip & AHC_CHIPID_MASK;
 1070         devconfig = aic_pci_read_config(ahc->dev_softc,
 1071                                         DEVCONFIG, /*bytes*/4);
 1072         single_user = (devconfig & MPORTMODE) != 0;
 1073 
 1074         if ((ahc->features & AHC_ULTRA2) != 0)
 1075                 ramps = (ahc_inb(ahc, DSCOMMAND0) & RAMPS) != 0;
 1076         else if (chip == AHC_AIC7895 || chip == AHC_AIC7895C)
 1077                 /*
 1078                  * External SCBRAM arbitration is flakey
 1079                  * on these chips.  Unfortunately this means
 1080                  * we don't use the extra SCB ram space on the
 1081                  * 3940AUW.
 1082                  */
 1083                 ramps = 0;
 1084         else if (chip >= AHC_AIC7870)
 1085                 ramps = (devconfig & RAMPSM) != 0;
 1086         else
 1087                 ramps = 0;
 1088 
 1089         if (ramps && single_user)
 1090                 return (1);
 1091         return (0);
 1092 }
 1093 
 1094 /*
 1095  * Enable external scbram.
 1096  */
 1097 static void
 1098 ahc_scbram_config(struct ahc_softc *ahc, int enable, int pcheck,
 1099                   int fast, int large)
 1100 {
 1101         uint32_t devconfig;
 1102 
 1103         if (ahc->features & AHC_MULTI_FUNC) {
 1104                 /*
 1105                  * Set the SCB Base addr (highest address bit)
 1106                  * depending on which channel we are.
 1107                  */
 1108                 ahc_outb(ahc, SCBBADDR, aic_get_pci_function(ahc->dev_softc));
 1109         }
 1110 
 1111         ahc->flags &= ~AHC_LSCBS_ENABLED;
 1112         if (large)
 1113                 ahc->flags |= AHC_LSCBS_ENABLED;
 1114         devconfig = aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
 1115         if ((ahc->features & AHC_ULTRA2) != 0) {
 1116                 u_int dscommand0;
 1117 
 1118                 dscommand0 = ahc_inb(ahc, DSCOMMAND0);
 1119                 if (enable)
 1120                         dscommand0 &= ~INTSCBRAMSEL;
 1121                 else
 1122                         dscommand0 |= INTSCBRAMSEL;
 1123                 if (large)
 1124                         dscommand0 &= ~USCBSIZE32;
 1125                 else
 1126                         dscommand0 |= USCBSIZE32;
 1127                 ahc_outb(ahc, DSCOMMAND0, dscommand0);
 1128         } else {
 1129                 if (fast)
 1130                         devconfig &= ~EXTSCBTIME;
 1131                 else
 1132                         devconfig |= EXTSCBTIME;
 1133                 if (enable)
 1134                         devconfig &= ~SCBRAMSEL;
 1135                 else
 1136                         devconfig |= SCBRAMSEL;
 1137                 if (large)
 1138                         devconfig &= ~SCBSIZE32;
 1139                 else
 1140                         devconfig |= SCBSIZE32;
 1141         }
 1142         if (pcheck)
 1143                 devconfig |= EXTSCBPEN;
 1144         else
 1145                 devconfig &= ~EXTSCBPEN;
 1146 
 1147         aic_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
 1148 }
 1149 
 1150 /*
 1151  * Take a look to see if we have external SRAM.
 1152  * We currently do not attempt to use SRAM that is
 1153  * shared among multiple controllers.
 1154  */
 1155 static void
 1156 ahc_probe_ext_scbram(struct ahc_softc *ahc)
 1157 {
 1158         int num_scbs;
 1159         int test_num_scbs;
 1160         int enable;
 1161         int pcheck;
 1162         int fast;
 1163         int large;
 1164 
 1165         enable = FALSE;
 1166         pcheck = FALSE;
 1167         fast = FALSE;
 1168         large = FALSE;
 1169         num_scbs = 0;
 1170         
 1171         if (ahc_ext_scbram_present(ahc) == 0)
 1172                 goto done;
 1173 
 1174         /*
 1175          * Probe for the best parameters to use.
 1176          */
 1177         ahc_scbram_config(ahc, /*enable*/TRUE, pcheck, fast, large);
 1178         num_scbs = ahc_probe_scbs(ahc);
 1179         if (num_scbs == 0) {
 1180                 /* The SRAM wasn't really present. */
 1181                 goto done;
 1182         }
 1183         enable = TRUE;
 1184 
 1185         /*
 1186          * Clear any outstanding parity error
 1187          * and ensure that parity error reporting
 1188          * is enabled.
 1189          */
 1190         ahc_outb(ahc, SEQCTL, 0);
 1191         ahc_outb(ahc, CLRINT, CLRPARERR);
 1192         ahc_outb(ahc, CLRINT, CLRBRKADRINT);
 1193 
 1194         /* Now see if we can do parity */
 1195         ahc_scbram_config(ahc, enable, /*pcheck*/TRUE, fast, large);
 1196         num_scbs = ahc_probe_scbs(ahc);
 1197         if ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
 1198          || (ahc_inb(ahc, ERROR) & MPARERR) == 0)
 1199                 pcheck = TRUE;
 1200 
 1201         /* Clear any resulting parity error */
 1202         ahc_outb(ahc, CLRINT, CLRPARERR);
 1203         ahc_outb(ahc, CLRINT, CLRBRKADRINT);
 1204 
 1205         /* Now see if we can do fast timing */
 1206         ahc_scbram_config(ahc, enable, pcheck, /*fast*/TRUE, large);
 1207         test_num_scbs = ahc_probe_scbs(ahc);
 1208         if (test_num_scbs == num_scbs
 1209          && ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
 1210           || (ahc_inb(ahc, ERROR) & MPARERR) == 0))
 1211                 fast = TRUE;
 1212 
 1213         /*
 1214          * See if we can use large SCBs and still maintain
 1215          * the same overall count of SCBs.
 1216          */
 1217         if ((ahc->features & AHC_LARGE_SCBS) != 0) {
 1218                 ahc_scbram_config(ahc, enable, pcheck, fast, /*large*/TRUE);
 1219                 test_num_scbs = ahc_probe_scbs(ahc);
 1220                 if (test_num_scbs >= num_scbs) {
 1221                         large = TRUE;
 1222                         num_scbs = test_num_scbs;
 1223                         if (num_scbs >= 64) {
 1224                                 /*
 1225                                  * We have enough space to move the
 1226                                  * "busy targets table" into SCB space
 1227                                  * and make it qualify all the way to the
 1228                                  * lun level.
 1229                                  */
 1230                                 ahc->flags |= AHC_SCB_BTT;
 1231                         }
 1232                 }
 1233         }
 1234 done:
 1235         /*
 1236          * Disable parity error reporting until we
 1237          * can load instruction ram.
 1238          */
 1239         ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
 1240         /* Clear any latched parity error */
 1241         ahc_outb(ahc, CLRINT, CLRPARERR);
 1242         ahc_outb(ahc, CLRINT, CLRBRKADRINT);
 1243         if (bootverbose && enable) {
 1244                 printf("%s: External SRAM, %s access%s, %dbytes/SCB\n",
 1245                        ahc_name(ahc), fast ? "fast" : "slow", 
 1246                        pcheck ? ", parity checking enabled" : "",
 1247                        large ? 64 : 32);
 1248         }
 1249         ahc_scbram_config(ahc, enable, pcheck, fast, large);
 1250 }
 1251 
 1252 /*
 1253  * Perform some simple tests that should catch situations where
 1254  * our registers are invalidly mapped.
 1255  */
 1256 int
 1257 ahc_pci_test_register_access(struct ahc_softc *ahc)
 1258 {
 1259         int      error;
 1260         u_int    status1;
 1261         uint32_t cmd;
 1262         uint8_t  hcntrl;
 1263 
 1264         error = EIO;
 1265 
 1266         /*
 1267          * Enable PCI error interrupt status, but suppress NMIs
 1268          * generated by SERR raised due to target aborts.
 1269          */
 1270         cmd = aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
 1271         aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
 1272                              cmd & ~PCIM_CMD_SERRESPEN, /*bytes*/2);
 1273 
 1274         /*
 1275          * First a simple test to see if any
 1276          * registers can be read.  Reading
 1277          * HCNTRL has no side effects and has
 1278          * at least one bit that is guaranteed to
 1279          * be zero so it is a good register to
 1280          * use for this test.
 1281          */
 1282         hcntrl = ahc_inb(ahc, HCNTRL);
 1283 
 1284         if (hcntrl == 0xFF)
 1285                 goto fail;
 1286 
 1287         if ((hcntrl & CHIPRST) != 0) {
 1288                 /*
 1289                  * The chip has not been initialized since
 1290                  * PCI/EISA/VLB bus reset.  Don't trust
 1291                  * "left over BIOS data".
 1292                  */
 1293                 ahc->flags |= AHC_NO_BIOS_INIT;
 1294         }
 1295 
 1296         /*
 1297          * Next create a situation where write combining
 1298          * or read prefetching could be initiated by the
 1299          * CPU or host bridge.  Our device does not support
 1300          * either, so look for data corruption and/or flagged
 1301          * PCI errors.  First pause without causing another
 1302          * chip reset.
 1303          */
 1304         hcntrl &= ~CHIPRST;
 1305         ahc_outb(ahc, HCNTRL, hcntrl|PAUSE);
 1306         while (ahc_is_paused(ahc) == 0)
 1307                 ;
 1308 
 1309         /* Clear any PCI errors that occurred before our driver attached. */
 1310         status1 = aic_pci_read_config(ahc->dev_softc,
 1311                                       PCIR_STATUS + 1, /*bytes*/1);
 1312         aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
 1313                              status1, /*bytes*/1);
 1314         ahc_outb(ahc, CLRINT, CLRPARERR);
 1315 
 1316         ahc_outb(ahc, SEQCTL, PERRORDIS);
 1317         ahc_outb(ahc, SCBPTR, 0);
 1318         ahc_outl(ahc, SCB_BASE, 0x5aa555aa);
 1319         if (ahc_inl(ahc, SCB_BASE) != 0x5aa555aa)
 1320                 goto fail;
 1321 
 1322         status1 = aic_pci_read_config(ahc->dev_softc,
 1323                                       PCIR_STATUS + 1, /*bytes*/1);
 1324         if ((status1 & STA) != 0)
 1325                 goto fail;
 1326 
 1327         error = 0;
 1328 
 1329 fail:
 1330         /* Silently clear any latched errors. */
 1331         status1 = aic_pci_read_config(ahc->dev_softc,
 1332                                       PCIR_STATUS + 1, /*bytes*/1);
 1333         aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
 1334                              status1, /*bytes*/1);
 1335         ahc_outb(ahc, CLRINT, CLRPARERR);
 1336         ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
 1337         aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND, cmd, /*bytes*/2);
 1338         return (error);
 1339 }
 1340 
 1341 /*
 1342  * Check the external port logic for a serial eeprom
 1343  * and termination/cable detection contrls.
 1344  */
 1345 static void
 1346 check_extport(struct ahc_softc *ahc, u_int *sxfrctl1)
 1347 {
 1348         struct  seeprom_descriptor sd;
 1349         struct  seeprom_config *sc;
 1350         int     have_seeprom;
 1351         int     have_autoterm;
 1352 
 1353         sd.sd_ahc = ahc;
 1354         sd.sd_control_offset = SEECTL;          
 1355         sd.sd_status_offset = SEECTL;           
 1356         sd.sd_dataout_offset = SEECTL;          
 1357         sc = ahc->seep_config;
 1358 
 1359         /*
 1360          * For some multi-channel devices, the c46 is simply too
 1361          * small to work.  For the other controller types, we can
 1362          * get our information from either SEEPROM type.  Set the
 1363          * type to start our probe with accordingly.
 1364          */
 1365         if (ahc->flags & AHC_LARGE_SEEPROM)
 1366                 sd.sd_chip = C56_66;
 1367         else
 1368                 sd.sd_chip = C46;
 1369 
 1370         sd.sd_MS = SEEMS;
 1371         sd.sd_RDY = SEERDY;
 1372         sd.sd_CS = SEECS;
 1373         sd.sd_CK = SEECK;
 1374         sd.sd_DO = SEEDO;
 1375         sd.sd_DI = SEEDI;
 1376 
 1377         have_seeprom = ahc_acquire_seeprom(ahc, &sd);
 1378         if (have_seeprom) {
 1379 
 1380                 if (bootverbose) 
 1381                         printf("%s: Reading SEEPROM...", ahc_name(ahc));
 1382 
 1383                 for (;;) {
 1384                         u_int start_addr;
 1385 
 1386                         start_addr = 32 * (ahc->channel - 'A');
 1387 
 1388                         have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
 1389                                                         start_addr,
 1390                                                         sizeof(*sc)/2);
 1391 
 1392                         if (have_seeprom)
 1393                                 have_seeprom = ahc_verify_cksum(sc);
 1394 
 1395                         if (have_seeprom != 0 || sd.sd_chip == C56_66) {
 1396                                 if (bootverbose) {
 1397                                         if (have_seeprom == 0)
 1398                                                 printf ("checksum error\n");
 1399                                         else
 1400                                                 printf ("done.\n");
 1401                                 }
 1402                                 break;
 1403                         }
 1404                         sd.sd_chip = C56_66;
 1405                 }
 1406                 ahc_release_seeprom(&sd);
 1407 
 1408                 /* Remember the SEEPROM type for later */
 1409                 if (sd.sd_chip == C56_66)
 1410                         ahc->flags |= AHC_LARGE_SEEPROM;
 1411         }
 1412 
 1413         if (!have_seeprom) {
 1414                 /*
 1415                  * Pull scratch ram settings and treat them as
 1416                  * if they are the contents of an seeprom if
 1417                  * the 'ADPT' signature is found in SCB2.
 1418                  * We manually compose the data as 16bit values
 1419                  * to avoid endian issues.
 1420                  */
 1421                 ahc_outb(ahc, SCBPTR, 2);
 1422                 if (ahc_inb(ahc, SCB_BASE) == 'A'
 1423                  && ahc_inb(ahc, SCB_BASE + 1) == 'D'
 1424                  && ahc_inb(ahc, SCB_BASE + 2) == 'P'
 1425                  && ahc_inb(ahc, SCB_BASE + 3) == 'T') {
 1426                         uint16_t *sc_data;
 1427                         int       i;
 1428 
 1429                         sc_data = (uint16_t *)sc;
 1430                         for (i = 0; i < 32; i++, sc_data++) {
 1431                                 int     j;
 1432 
 1433                                 j = i * 2;
 1434                                 *sc_data = ahc_inb(ahc, SRAM_BASE + j)
 1435                                          | ahc_inb(ahc, SRAM_BASE + j + 1) << 8;
 1436                         }
 1437                         have_seeprom = ahc_verify_cksum(sc);
 1438                         if (have_seeprom)
 1439                                 ahc->flags |= AHC_SCB_CONFIG_USED;
 1440                 }
 1441                 /*
 1442                  * Clear any SCB parity errors in case this data and
 1443                  * its associated parity was not initialized by the BIOS
 1444                  */
 1445                 ahc_outb(ahc, CLRINT, CLRPARERR);
 1446                 ahc_outb(ahc, CLRINT, CLRBRKADRINT);
 1447         }
 1448 
 1449         if (!have_seeprom) {
 1450                 if (bootverbose)
 1451                         printf("%s: No SEEPROM available.\n", ahc_name(ahc));
 1452                 ahc->flags |= AHC_USEDEFAULTS;
 1453                 free(ahc->seep_config, M_DEVBUF);
 1454                 ahc->seep_config = NULL;
 1455                 sc = NULL;
 1456         } else {
 1457                 ahc_parse_pci_eeprom(ahc, sc);
 1458         }
 1459 
 1460         /*
 1461          * Cards that have the external logic necessary to talk to
 1462          * a SEEPROM, are almost certain to have the remaining logic
 1463          * necessary for auto-termination control.  This assumption
 1464          * hasn't failed yet...
 1465          */
 1466         have_autoterm = have_seeprom;
 1467 
 1468         /*
 1469          * Some low-cost chips have SEEPROM and auto-term control built
 1470          * in, instead of using a GAL.  They can tell us directly
 1471          * if the termination logic is enabled.
 1472          */
 1473         if ((ahc->features & AHC_SPIOCAP) != 0) {
 1474                 if ((ahc_inb(ahc, SPIOCAP) & SSPIOCPS) == 0)
 1475                         have_autoterm = FALSE;
 1476         }
 1477 
 1478         if (have_autoterm) {
 1479                 ahc->flags |= AHC_HAS_TERM_LOGIC;
 1480                 ahc_acquire_seeprom(ahc, &sd);
 1481                 configure_termination(ahc, &sd, sc->adapter_control, sxfrctl1);
 1482                 ahc_release_seeprom(&sd);
 1483         } else if (have_seeprom) {
 1484                 *sxfrctl1 &= ~STPWEN;
 1485                 if ((sc->adapter_control & CFSTERM) != 0)
 1486                         *sxfrctl1 |= STPWEN;
 1487                 if (bootverbose)
 1488                         printf("%s: Low byte termination %sabled\n",
 1489                                ahc_name(ahc),
 1490                                (*sxfrctl1 & STPWEN) ? "en" : "dis");
 1491         }
 1492 }
 1493 
 1494 static void
 1495 ahc_parse_pci_eeprom(struct ahc_softc *ahc, struct seeprom_config *sc)
 1496 {
 1497         /*
 1498          * Put the data we've collected down into SRAM
 1499          * where ahc_init will find it.
 1500          */
 1501         int      i;
 1502         int      max_targ = sc->max_targets & CFMAXTARG;
 1503         u_int    scsi_conf;
 1504         uint16_t discenable;
 1505         uint16_t ultraenb;
 1506 
 1507         discenable = 0;
 1508         ultraenb = 0;
 1509         if ((sc->adapter_control & CFULTRAEN) != 0) {
 1510                 /*
 1511                  * Determine if this adapter has a "newstyle"
 1512                  * SEEPROM format.
 1513                  */
 1514                 for (i = 0; i < max_targ; i++) {
 1515                         if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0) {
 1516                                 ahc->flags |= AHC_NEWEEPROM_FMT;
 1517                                 break;
 1518                         }
 1519                 }
 1520         }
 1521 
 1522         for (i = 0; i < max_targ; i++) {
 1523                 u_int     scsirate;
 1524                 uint16_t target_mask;
 1525 
 1526                 target_mask = 0x01 << i;
 1527                 if (sc->device_flags[i] & CFDISC)
 1528                         discenable |= target_mask;
 1529                 if ((ahc->flags & AHC_NEWEEPROM_FMT) != 0) {
 1530                         if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0)
 1531                                 ultraenb |= target_mask;
 1532                 } else if ((sc->adapter_control & CFULTRAEN) != 0) {
 1533                         ultraenb |= target_mask;
 1534                 }
 1535                 if ((sc->device_flags[i] & CFXFER) == 0x04
 1536                  && (ultraenb & target_mask) != 0) {
 1537                         /* Treat 10MHz as a non-ultra speed */
 1538                         sc->device_flags[i] &= ~CFXFER;
 1539                         ultraenb &= ~target_mask;
 1540                 }
 1541                 if ((ahc->features & AHC_ULTRA2) != 0) {
 1542                         u_int offset;
 1543 
 1544                         if (sc->device_flags[i] & CFSYNCH)
 1545                                 offset = MAX_OFFSET_ULTRA2;
 1546                         else 
 1547                                 offset = 0;
 1548                         ahc_outb(ahc, TARG_OFFSET + i, offset);
 1549 
 1550                         /*
 1551                          * The ultra enable bits contain the
 1552                          * high bit of the ultra2 sync rate
 1553                          * field.
 1554                          */
 1555                         scsirate = (sc->device_flags[i] & CFXFER)
 1556                                  | ((ultraenb & target_mask) ? 0x8 : 0x0);
 1557                         if (sc->device_flags[i] & CFWIDEB)
 1558                                 scsirate |= WIDEXFER;
 1559                 } else {
 1560                         scsirate = (sc->device_flags[i] & CFXFER) << 4;
 1561                         if (sc->device_flags[i] & CFSYNCH)
 1562                                 scsirate |= SOFS;
 1563                         if (sc->device_flags[i] & CFWIDEB)
 1564                                 scsirate |= WIDEXFER;
 1565                 }
 1566                 ahc_outb(ahc, TARG_SCSIRATE + i, scsirate);
 1567         }
 1568         ahc->our_id = sc->brtime_id & CFSCSIID;
 1569 
 1570         scsi_conf = (ahc->our_id & 0x7);
 1571         if (sc->adapter_control & CFSPARITY)
 1572                 scsi_conf |= ENSPCHK;
 1573         if (sc->adapter_control & CFRESETB)
 1574                 scsi_conf |= RESET_SCSI;
 1575 
 1576         ahc->flags |= (sc->adapter_control & CFBOOTCHAN) >> CFBOOTCHANSHIFT;
 1577 
 1578         if (sc->bios_control & CFEXTEND)
 1579                 ahc->flags |= AHC_EXTENDED_TRANS_A;
 1580 
 1581         if (sc->bios_control & CFBIOSEN)
 1582                 ahc->flags |= AHC_BIOS_ENABLED;
 1583         if (ahc->features & AHC_ULTRA
 1584          && (ahc->flags & AHC_NEWEEPROM_FMT) == 0) {
 1585                 /* Should we enable Ultra mode? */
 1586                 if (!(sc->adapter_control & CFULTRAEN))
 1587                         /* Treat us as a non-ultra card */
 1588                         ultraenb = 0;
 1589         }
 1590 
 1591         if (sc->signature == CFSIGNATURE
 1592          || sc->signature == CFSIGNATURE2) {
 1593                 uint32_t devconfig;
 1594 
 1595                 /* Honor the STPWLEVEL settings */
 1596                 devconfig = aic_pci_read_config(ahc->dev_softc,
 1597                                                 DEVCONFIG, /*bytes*/4);
 1598                 devconfig &= ~STPWLEVEL;
 1599                 if ((sc->bios_control & CFSTPWLEVEL) != 0)
 1600                         devconfig |= STPWLEVEL;
 1601                 aic_pci_write_config(ahc->dev_softc, DEVCONFIG,
 1602                                      devconfig, /*bytes*/4);
 1603         }
 1604         /* Set SCSICONF info */
 1605         ahc_outb(ahc, SCSICONF, scsi_conf);
 1606         ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
 1607         ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
 1608         ahc_outb(ahc, ULTRA_ENB, ultraenb & 0xff);
 1609         ahc_outb(ahc, ULTRA_ENB + 1, (ultraenb >> 8) & 0xff);
 1610 }
 1611 
 1612 static void
 1613 configure_termination(struct ahc_softc *ahc,
 1614                       struct seeprom_descriptor *sd,
 1615                       u_int adapter_control,
 1616                       u_int *sxfrctl1)
 1617 {
 1618         uint8_t brddat;
 1619         
 1620         brddat = 0;
 1621 
 1622         /*
 1623          * Update the settings in sxfrctl1 to match the
 1624          * termination settings 
 1625          */
 1626         *sxfrctl1 = 0;
 1627         
 1628         /*
 1629          * SEECS must be on for the GALS to latch
 1630          * the data properly.  Be sure to leave MS
 1631          * on or we will release the seeprom.
 1632          */
 1633         SEEPROM_OUTB(sd, sd->sd_MS | sd->sd_CS);
 1634         if ((adapter_control & CFAUTOTERM) != 0
 1635          || (ahc->features & AHC_NEW_TERMCTL) != 0) {
 1636                 int internal50_present;
 1637                 int internal68_present;
 1638                 int externalcable_present;
 1639                 int eeprom_present;
 1640                 int enableSEC_low;
 1641                 int enableSEC_high;
 1642                 int enablePRI_low;
 1643                 int enablePRI_high;
 1644                 int sum;
 1645 
 1646                 enableSEC_low = 0;
 1647                 enableSEC_high = 0;
 1648                 enablePRI_low = 0;
 1649                 enablePRI_high = 0;
 1650                 if ((ahc->features & AHC_NEW_TERMCTL) != 0) {
 1651                         ahc_new_term_detect(ahc, &enableSEC_low,
 1652                                             &enableSEC_high,
 1653                                             &enablePRI_low,
 1654                                             &enablePRI_high,
 1655                                             &eeprom_present);
 1656                         if ((adapter_control & CFSEAUTOTERM) == 0) {
 1657                                 if (bootverbose)
 1658                                         printf("%s: Manual SE Termination\n",
 1659                                                ahc_name(ahc));
 1660                                 enableSEC_low = (adapter_control & CFSELOWTERM);
 1661                                 enableSEC_high =
 1662                                     (adapter_control & CFSEHIGHTERM);
 1663                         }
 1664                         if ((adapter_control & CFAUTOTERM) == 0) {
 1665                                 if (bootverbose)
 1666                                         printf("%s: Manual LVD Termination\n",
 1667                                                ahc_name(ahc));
 1668                                 enablePRI_low = (adapter_control & CFSTERM);
 1669                                 enablePRI_high = (adapter_control & CFWSTERM);
 1670                         }
 1671                         /* Make the table calculations below happy */
 1672                         internal50_present = 0;
 1673                         internal68_present = 1;
 1674                         externalcable_present = 1;
 1675                 } else if ((ahc->features & AHC_SPIOCAP) != 0) {
 1676                         aic785X_cable_detect(ahc, &internal50_present,
 1677                                              &externalcable_present,
 1678                                              &eeprom_present);
 1679                         /* Can never support a wide connector. */
 1680                         internal68_present = 0;
 1681                 } else {
 1682                         aic787X_cable_detect(ahc, &internal50_present,
 1683                                              &internal68_present,
 1684                                              &externalcable_present,
 1685                                              &eeprom_present);
 1686                 }
 1687 
 1688                 if ((ahc->features & AHC_WIDE) == 0)
 1689                         internal68_present = 0;
 1690 
 1691                 if (bootverbose
 1692                  && (ahc->features & AHC_ULTRA2) == 0) {
 1693                         printf("%s: internal 50 cable %s present",
 1694                                ahc_name(ahc),
 1695                                internal50_present ? "is":"not");
 1696 
 1697                         if ((ahc->features & AHC_WIDE) != 0)
 1698                                 printf(", internal 68 cable %s present",
 1699                                        internal68_present ? "is":"not");
 1700                         printf("\n%s: external cable %s present\n",
 1701                                ahc_name(ahc),
 1702                                externalcable_present ? "is":"not");
 1703                 }
 1704                 if (bootverbose)
 1705                         printf("%s: BIOS eeprom %s present\n",
 1706                                ahc_name(ahc), eeprom_present ? "is" : "not");
 1707 
 1708                 if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0) {
 1709                         /*
 1710                          * The 50 pin connector is a separate bus,
 1711                          * so force it to always be terminated.
 1712                          * In the future, perform current sensing
 1713                          * to determine if we are in the middle of
 1714                          * a properly terminated bus.
 1715                          */
 1716                         internal50_present = 0;
 1717                 }
 1718 
 1719                 /*
 1720                  * Now set the termination based on what
 1721                  * we found.
 1722                  * Flash Enable = BRDDAT7
 1723                  * Secondary High Term Enable = BRDDAT6
 1724                  * Secondary Low Term Enable = BRDDAT5 (7890)
 1725                  * Primary High Term Enable = BRDDAT4 (7890)
 1726                  */
 1727                 if ((ahc->features & AHC_ULTRA2) == 0
 1728                  && (internal50_present != 0)
 1729                  && (internal68_present != 0)
 1730                  && (externalcable_present != 0)) {
 1731                         printf("%s: Illegal cable configuration!!. "
 1732                                "Only two connectors on the "
 1733                                "adapter may be used at a "
 1734                                "time!\n", ahc_name(ahc));
 1735 
 1736                         /*
 1737                          * Pretend there are no cables in the hope
 1738                          * that having all of the termination on
 1739                          * gives us a more stable bus.
 1740                          */
 1741                         internal50_present = 0;
 1742                         internal68_present = 0;
 1743                         externalcable_present = 0;
 1744                 }
 1745 
 1746                 if ((ahc->features & AHC_WIDE) != 0
 1747                  && ((externalcable_present == 0)
 1748                   || (internal68_present == 0)
 1749                   || (enableSEC_high != 0))) {
 1750                         brddat |= BRDDAT6;
 1751                         if (bootverbose) {
 1752                                 if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
 1753                                         printf("%s: 68 pin termination "
 1754                                                "Enabled\n", ahc_name(ahc));
 1755                                 else
 1756                                         printf("%s: %sHigh byte termination "
 1757                                                "Enabled\n", ahc_name(ahc),
 1758                                                enableSEC_high ? "Secondary "
 1759                                                               : "");
 1760                         }
 1761                 }
 1762 
 1763                 sum = internal50_present + internal68_present
 1764                     + externalcable_present;
 1765                 if (sum < 2 || (enableSEC_low != 0)) {
 1766                         if ((ahc->features & AHC_ULTRA2) != 0)
 1767                                 brddat |= BRDDAT5;
 1768                         else
 1769                                 *sxfrctl1 |= STPWEN;
 1770                         if (bootverbose) {
 1771                                 if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
 1772                                         printf("%s: 50 pin termination "
 1773                                                "Enabled\n", ahc_name(ahc));
 1774                                 else
 1775                                         printf("%s: %sLow byte termination "
 1776                                                "Enabled\n", ahc_name(ahc),
 1777                                                enableSEC_low ? "Secondary "
 1778                                                              : "");
 1779                         }
 1780                 }
 1781 
 1782                 if (enablePRI_low != 0) {
 1783                         *sxfrctl1 |= STPWEN;
 1784                         if (bootverbose)
 1785                                 printf("%s: Primary Low Byte termination "
 1786                                        "Enabled\n", ahc_name(ahc));
 1787                 }
 1788 
 1789                 /*
 1790                  * Setup STPWEN before setting up the rest of
 1791                  * the termination per the tech note on the U160 cards.
 1792                  */
 1793                 ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
 1794 
 1795                 if (enablePRI_high != 0) {
 1796                         brddat |= BRDDAT4;
 1797                         if (bootverbose)
 1798                                 printf("%s: Primary High Byte "
 1799                                        "termination Enabled\n",
 1800                                        ahc_name(ahc));
 1801                 }
 1802                 
 1803                 write_brdctl(ahc, brddat);
 1804 
 1805         } else {
 1806                 if ((adapter_control & CFSTERM) != 0) {
 1807                         *sxfrctl1 |= STPWEN;
 1808 
 1809                         if (bootverbose)
 1810                                 printf("%s: %sLow byte termination Enabled\n",
 1811                                        ahc_name(ahc),
 1812                                        (ahc->features & AHC_ULTRA2) ? "Primary "
 1813                                                                     : "");
 1814                 }
 1815 
 1816                 if ((adapter_control & CFWSTERM) != 0
 1817                  && (ahc->features & AHC_WIDE) != 0) {
 1818                         brddat |= BRDDAT6;
 1819                         if (bootverbose)
 1820                                 printf("%s: %sHigh byte termination Enabled\n",
 1821                                        ahc_name(ahc),
 1822                                        (ahc->features & AHC_ULTRA2)
 1823                                      ? "Secondary " : "");
 1824                 }
 1825 
 1826                 /*
 1827                  * Setup STPWEN before setting up the rest of
 1828                  * the termination per the tech note on the U160 cards.
 1829                  */
 1830                 ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
 1831 
 1832                 if ((ahc->features & AHC_WIDE) != 0)
 1833                         write_brdctl(ahc, brddat);
 1834         }
 1835         SEEPROM_OUTB(sd, sd->sd_MS); /* Clear CS */
 1836 }
 1837 
 1838 static void
 1839 ahc_new_term_detect(struct ahc_softc *ahc, int *enableSEC_low,
 1840                     int *enableSEC_high, int *enablePRI_low,
 1841                     int *enablePRI_high, int *eeprom_present)
 1842 {
 1843         uint8_t brdctl;
 1844 
 1845         /*
 1846          * BRDDAT7 = Eeprom
 1847          * BRDDAT6 = Enable Secondary High Byte termination
 1848          * BRDDAT5 = Enable Secondary Low Byte termination
 1849          * BRDDAT4 = Enable Primary high byte termination
 1850          * BRDDAT3 = Enable Primary low byte termination
 1851          */
 1852         brdctl = read_brdctl(ahc);
 1853         *eeprom_present = brdctl & BRDDAT7;
 1854         *enableSEC_high = (brdctl & BRDDAT6);
 1855         *enableSEC_low = (brdctl & BRDDAT5);
 1856         *enablePRI_high = (brdctl & BRDDAT4);
 1857         *enablePRI_low = (brdctl & BRDDAT3);
 1858 }
 1859 
 1860 static void
 1861 aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
 1862                      int *internal68_present, int *externalcable_present,
 1863                      int *eeprom_present)
 1864 {
 1865         uint8_t brdctl;
 1866 
 1867         /*
 1868          * First read the status of our cables.
 1869          * Set the rom bank to 0 since the
 1870          * bank setting serves as a multiplexor
 1871          * for the cable detection logic.
 1872          * BRDDAT5 controls the bank switch.
 1873          */
 1874         write_brdctl(ahc, 0);
 1875 
 1876         /*
 1877          * Now read the state of the internal
 1878          * connectors.  BRDDAT6 is INT50 and
 1879          * BRDDAT7 is INT68.
 1880          */
 1881         brdctl = read_brdctl(ahc);
 1882         *internal50_present = (brdctl & BRDDAT6) ? 0 : 1;
 1883         *internal68_present = (brdctl & BRDDAT7) ? 0 : 1;
 1884 
 1885         /*
 1886          * Set the rom bank to 1 and determine
 1887          * the other signals.
 1888          */
 1889         write_brdctl(ahc, BRDDAT5);
 1890 
 1891         /*
 1892          * Now read the state of the external
 1893          * connectors.  BRDDAT6 is EXT68 and
 1894          * BRDDAT7 is EPROMPS.
 1895          */
 1896         brdctl = read_brdctl(ahc);
 1897         *externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
 1898         *eeprom_present = (brdctl & BRDDAT7) ? 1 : 0;
 1899 }
 1900 
 1901 static void
 1902 aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
 1903                      int *externalcable_present, int *eeprom_present)
 1904 {
 1905         uint8_t brdctl;
 1906         uint8_t spiocap;
 1907 
 1908         spiocap = ahc_inb(ahc, SPIOCAP);
 1909         spiocap &= ~SOFTCMDEN;
 1910         spiocap |= EXT_BRDCTL;
 1911         ahc_outb(ahc, SPIOCAP, spiocap);
 1912         ahc_outb(ahc, BRDCTL, BRDRW|BRDCS);
 1913         ahc_flush_device_writes(ahc);
 1914         aic_delay(500);
 1915         ahc_outb(ahc, BRDCTL, 0);
 1916         ahc_flush_device_writes(ahc);
 1917         aic_delay(500);
 1918         brdctl = ahc_inb(ahc, BRDCTL);
 1919         *internal50_present = (brdctl & BRDDAT5) ? 0 : 1;
 1920         *externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
 1921         *eeprom_present = (ahc_inb(ahc, SPIOCAP) & EEPROM) ? 1 : 0;
 1922 }
 1923         
 1924 int
 1925 ahc_acquire_seeprom(struct ahc_softc *ahc, struct seeprom_descriptor *sd)
 1926 {
 1927         int wait;
 1928 
 1929         if ((ahc->features & AHC_SPIOCAP) != 0
 1930          && (ahc_inb(ahc, SPIOCAP) & SEEPROM) == 0)
 1931                 return (0);
 1932 
 1933         /*
 1934          * Request access of the memory port.  When access is
 1935          * granted, SEERDY will go high.  We use a 1 second
 1936          * timeout which should be near 1 second more than
 1937          * is needed.  Reason: after the chip reset, there
 1938          * should be no contention.
 1939          */
 1940         SEEPROM_OUTB(sd, sd->sd_MS);
 1941         wait = 1000;  /* 1 second timeout in msec */
 1942         while (--wait && ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0)) {
 1943                 aic_delay(1000);  /* delay 1 msec */
 1944         }
 1945         if ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0) {
 1946                 SEEPROM_OUTB(sd, 0); 
 1947                 return (0);
 1948         }
 1949         return(1);
 1950 }
 1951 
 1952 void
 1953 ahc_release_seeprom(struct seeprom_descriptor *sd)
 1954 {
 1955         /* Release access to the memory port and the serial EEPROM. */
 1956         SEEPROM_OUTB(sd, 0);
 1957 }
 1958 
 1959 static void
 1960 write_brdctl(struct ahc_softc *ahc, uint8_t value)
 1961 {
 1962         uint8_t brdctl;
 1963 
 1964         if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
 1965                 brdctl = BRDSTB;
 1966                 if (ahc->channel == 'B')
 1967                         brdctl |= BRDCS;
 1968         } else if ((ahc->features & AHC_ULTRA2) != 0) {
 1969                 brdctl = 0;
 1970         } else {
 1971                 brdctl = BRDSTB|BRDCS;
 1972         }
 1973         ahc_outb(ahc, BRDCTL, brdctl);
 1974         ahc_flush_device_writes(ahc);
 1975         brdctl |= value;
 1976         ahc_outb(ahc, BRDCTL, brdctl);
 1977         ahc_flush_device_writes(ahc);
 1978         if ((ahc->features & AHC_ULTRA2) != 0)
 1979                 brdctl |= BRDSTB_ULTRA2;
 1980         else
 1981                 brdctl &= ~BRDSTB;
 1982         ahc_outb(ahc, BRDCTL, brdctl);
 1983         ahc_flush_device_writes(ahc);
 1984         if ((ahc->features & AHC_ULTRA2) != 0)
 1985                 brdctl = 0;
 1986         else
 1987                 brdctl &= ~BRDCS;
 1988         ahc_outb(ahc, BRDCTL, brdctl);
 1989 }
 1990 
 1991 static uint8_t
 1992 read_brdctl(struct ahc_softc *ahc)
 1993 {
 1994         uint8_t brdctl;
 1995         uint8_t value;
 1996 
 1997         if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
 1998                 brdctl = BRDRW;
 1999                 if (ahc->channel == 'B')
 2000                         brdctl |= BRDCS;
 2001         } else if ((ahc->features & AHC_ULTRA2) != 0) {
 2002                 brdctl = BRDRW_ULTRA2;
 2003         } else {
 2004                 brdctl = BRDRW|BRDCS;
 2005         }
 2006         ahc_outb(ahc, BRDCTL, brdctl);
 2007         ahc_flush_device_writes(ahc);
 2008         value = ahc_inb(ahc, BRDCTL);
 2009         ahc_outb(ahc, BRDCTL, 0);
 2010         return (value);
 2011 }
 2012 
 2013 static void
 2014 ahc_pci_intr(struct ahc_softc *ahc)
 2015 {
 2016         u_int error;
 2017         u_int status1;
 2018 
 2019         error = ahc_inb(ahc, ERROR);
 2020         if ((error & PCIERRSTAT) == 0)
 2021                 return;
 2022 
 2023         status1 = aic_pci_read_config(ahc->dev_softc,
 2024                                       PCIR_STATUS + 1, /*bytes*/1);
 2025 
 2026         printf("%s: PCI error Interrupt at seqaddr = 0x%x\n",
 2027               ahc_name(ahc),
 2028               ahc_inb(ahc, SEQADDR0) | (ahc_inb(ahc, SEQADDR1) << 8));
 2029 
 2030         if (status1 & DPE) {
 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                 printf(
 2065 "%s: WARNING WARNING WARNING WARNING\n"
 2066 "%s: Too many PCI parity errors observed as a target.\n"
 2067 "%s: Some device on this bus is generating bad parity.\n"
 2068 "%s: This is an error *observed by*, not *generated by*, this controller.\n"
 2069 "%s: PCI parity error checking has been disabled.\n"
 2070 "%s: WARNING WARNING WARNING WARNING\n",
 2071                        ahc_name(ahc), ahc_name(ahc), ahc_name(ahc),
 2072                        ahc_name(ahc), ahc_name(ahc), ahc_name(ahc));
 2073                 ahc->seqctl |= FAILDIS;
 2074                 ahc_outb(ahc, SEQCTL, ahc->seqctl);
 2075         }
 2076         ahc_unpause(ahc);
 2077 }
 2078 
 2079 static int
 2080 ahc_pci_chip_init(struct ahc_softc *ahc)
 2081 {
 2082         ahc_outb(ahc, DSCOMMAND0, ahc->bus_softc.pci_softc.dscommand0);
 2083         ahc_outb(ahc, DSPCISTATUS, ahc->bus_softc.pci_softc.dspcistatus);
 2084         if ((ahc->features & AHC_DT) != 0) {
 2085                 u_int sfunct;
 2086 
 2087                 sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
 2088                 ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
 2089                 ahc_outb(ahc, OPTIONMODE, ahc->bus_softc.pci_softc.optionmode);
 2090                 ahc_outw(ahc, TARGCRCCNT, ahc->bus_softc.pci_softc.targcrccnt);
 2091                 ahc_outb(ahc, SFUNCT, sfunct);
 2092                 ahc_outb(ahc, CRCCONTROL1,
 2093                          ahc->bus_softc.pci_softc.crccontrol1);
 2094         }
 2095         if ((ahc->features & AHC_MULTI_FUNC) != 0)
 2096                 ahc_outb(ahc, SCBBADDR, ahc->bus_softc.pci_softc.scbbaddr);
 2097 
 2098         if ((ahc->features & AHC_ULTRA2) != 0)
 2099                 ahc_outb(ahc, DFF_THRSH, ahc->bus_softc.pci_softc.dff_thrsh);
 2100 
 2101         return (ahc_chip_init(ahc));
 2102 }
 2103 
 2104 static int
 2105 ahc_pci_suspend(struct ahc_softc *ahc)
 2106 {
 2107         return (ahc_suspend(ahc));
 2108 }
 2109 
 2110 static int
 2111 ahc_pci_resume(struct ahc_softc *ahc)
 2112 {
 2113 
 2114         aic_power_state_change(ahc, AIC_POWER_STATE_D0);
 2115 
 2116         /*
 2117          * We assume that the OS has restored our register
 2118          * mappings, etc.  Just update the config space registers
 2119          * that the OS doesn't know about and rely on our chip
 2120          * reset handler to handle the rest.
 2121          */
 2122         aic_pci_write_config(ahc->dev_softc, DEVCONFIG,
 2123                              ahc->bus_softc.pci_softc.devconfig, /*bytes*/4);
 2124         aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
 2125                              ahc->bus_softc.pci_softc.command, /*bytes*/1);
 2126         aic_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
 2127                              ahc->bus_softc.pci_softc.csize_lattime,
 2128                              /*bytes*/1);
 2129         if ((ahc->flags & AHC_HAS_TERM_LOGIC) != 0) {
 2130                 struct  seeprom_descriptor sd;
 2131                 u_int   sxfrctl1;
 2132 
 2133                 sd.sd_ahc = ahc;
 2134                 sd.sd_control_offset = SEECTL;          
 2135                 sd.sd_status_offset = SEECTL;           
 2136                 sd.sd_dataout_offset = SEECTL;          
 2137 
 2138                 ahc_acquire_seeprom(ahc, &sd);
 2139                 configure_termination(ahc, &sd,
 2140                                       ahc->seep_config->adapter_control,
 2141                                       &sxfrctl1);
 2142                 ahc_release_seeprom(&sd);
 2143         }
 2144         return (ahc_resume(ahc));
 2145 }
 2146 
 2147 static int
 2148 ahc_aic785X_setup(struct ahc_softc *ahc)
 2149 {
 2150         aic_dev_softc_t pci;
 2151         uint8_t rev;
 2152 
 2153         pci = ahc->dev_softc;
 2154         ahc->channel = 'A';
 2155         ahc->chip = AHC_AIC7850;
 2156         ahc->features = AHC_AIC7850_FE;
 2157         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
 2158         rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
 2159         if (rev >= 1)
 2160                 ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
 2161         ahc->instruction_ram_size = 512;
 2162         return (0);
 2163 }
 2164 
 2165 static int
 2166 ahc_aic7860_setup(struct ahc_softc *ahc)
 2167 {
 2168         aic_dev_softc_t pci;
 2169         uint8_t rev;
 2170 
 2171         pci = ahc->dev_softc;
 2172         ahc->channel = 'A';
 2173         ahc->chip = AHC_AIC7860;
 2174         ahc->features = AHC_AIC7860_FE;
 2175         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
 2176         rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
 2177         if (rev >= 1)
 2178                 ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
 2179         ahc->instruction_ram_size = 512;
 2180         return (0);
 2181 }
 2182 
 2183 static int
 2184 ahc_apa1480_setup(struct ahc_softc *ahc)
 2185 {
 2186         int error;
 2187 
 2188         error = ahc_aic7860_setup(ahc);
 2189         if (error != 0)
 2190                 return (error);
 2191         ahc->features |= AHC_REMOVABLE;
 2192         return (0);
 2193 }
 2194 
 2195 static int
 2196 ahc_aic7870_setup(struct ahc_softc *ahc)
 2197 {
 2198 
 2199         ahc->channel = 'A';
 2200         ahc->chip = AHC_AIC7870;
 2201         ahc->features = AHC_AIC7870_FE;
 2202         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
 2203         ahc->instruction_ram_size = 512;
 2204         return (0);
 2205 }
 2206 
 2207 static int
 2208 ahc_aha394X_setup(struct ahc_softc *ahc)
 2209 {
 2210         int error;
 2211 
 2212         error = ahc_aic7870_setup(ahc);
 2213         if (error == 0)
 2214                 error = ahc_aha394XX_setup(ahc);
 2215         return (error);
 2216 }
 2217 
 2218 static int
 2219 ahc_aha398X_setup(struct ahc_softc *ahc)
 2220 {
 2221         int error;
 2222 
 2223         error = ahc_aic7870_setup(ahc);
 2224         if (error == 0)
 2225                 error = ahc_aha398XX_setup(ahc);
 2226         return (error);
 2227 }
 2228 
 2229 static int
 2230 ahc_aha494X_setup(struct ahc_softc *ahc)
 2231 {
 2232         int error;
 2233 
 2234         error = ahc_aic7870_setup(ahc);
 2235         if (error == 0)
 2236                 error = ahc_aha494XX_setup(ahc);
 2237         return (error);
 2238 }
 2239 
 2240 static int
 2241 ahc_aic7880_setup(struct ahc_softc *ahc)
 2242 {
 2243         aic_dev_softc_t pci;
 2244         uint8_t rev;
 2245 
 2246         pci = ahc->dev_softc;
 2247         ahc->channel = 'A';
 2248         ahc->chip = AHC_AIC7880;
 2249         ahc->features = AHC_AIC7880_FE;
 2250         ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
 2251         rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
 2252         if (rev >= 1) {
 2253                 ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
 2254         } else {
 2255                 ahc->bugs |= AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
 2256         }
 2257         ahc->instruction_ram_size = 512;
 2258         return (0);
 2259 }
 2260 
 2261 static int
 2262 ahc_aha2940Pro_setup(struct ahc_softc *ahc)
 2263 {
 2264 
 2265         ahc->flags |= AHC_INT50_SPEEDFLEX;
 2266         return (ahc_aic7880_setup(ahc));
 2267 }
 2268 
 2269 static int
 2270 ahc_aha394XU_setup(struct ahc_softc *ahc)
 2271 {
 2272         int error;
 2273 
 2274         error = ahc_aic7880_setup(ahc);
 2275         if (error == 0)
 2276                 error = ahc_aha394XX_setup(ahc);
 2277         return (error);
 2278 }
 2279 
 2280 static int
 2281 ahc_aha398XU_setup(struct ahc_softc *ahc)
 2282 {
 2283         int error;
 2284 
 2285         error = ahc_aic7880_setup(ahc);
 2286         if (error == 0)
 2287                 error = ahc_aha398XX_setup(ahc);
 2288         return (error);
 2289 }
 2290 
 2291 static int
 2292 ahc_aic7890_setup(struct ahc_softc *ahc)
 2293 {
 2294         aic_dev_softc_t pci;
 2295         uint8_t rev;
 2296 
 2297         pci = ahc->dev_softc;
 2298         ahc->channel = 'A';
 2299         ahc->chip = AHC_AIC7890;
 2300         ahc->features = AHC_AIC7890_FE;
 2301         ahc->flags |= AHC_NEWEEPROM_FMT;
 2302         rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
 2303         if (rev == 0)
 2304                 ahc->bugs |= AHC_AUTOFLUSH_BUG|AHC_CACHETHEN_BUG;
 2305         ahc->instruction_ram_size = 768;
 2306         return (0);
 2307 }
 2308 
 2309 static int
 2310 ahc_aic7892_setup(struct ahc_softc *ahc)
 2311 {
 2312 
 2313         ahc->channel = 'A';
 2314         ahc->chip = AHC_AIC7892;
 2315         ahc->features = AHC_AIC7892_FE;
 2316         ahc->flags |= AHC_NEWEEPROM_FMT;
 2317         ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
 2318         ahc->instruction_ram_size = 1024;
 2319         return (0);
 2320 }
 2321 
 2322 static int
 2323 ahc_aic7895_setup(struct ahc_softc *ahc)
 2324 {
 2325         aic_dev_softc_t pci;
 2326         uint8_t rev;
 2327 
 2328         pci = ahc->dev_softc;
 2329         ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
 2330         /*
 2331          * The 'C' revision of the aic7895 has a few additional features.
 2332          */
 2333         rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
 2334         if (rev >= 4) {
 2335                 ahc->chip = AHC_AIC7895C;
 2336                 ahc->features = AHC_AIC7895C_FE;
 2337         } else  {
 2338                 u_int command;
 2339 
 2340                 ahc->chip = AHC_AIC7895;
 2341                 ahc->features = AHC_AIC7895_FE;
 2342 
 2343                 /*
 2344                  * The BIOS disables the use of MWI transactions
 2345                  * since it does not have the MWI bug work around
 2346                  * we have.  Disabling MWI reduces performance, so
 2347                  * turn it on again.
 2348                  */
 2349                 command = aic_pci_read_config(pci, PCIR_COMMAND, /*bytes*/1);
 2350                 command |= PCIM_CMD_MWRICEN;
 2351                 aic_pci_write_config(pci, PCIR_COMMAND, command, /*bytes*/1);
 2352                 ahc->bugs |= AHC_PCI_MWI_BUG;
 2353         }
 2354         /*
 2355          * XXX Does CACHETHEN really not work???  What about PCI retry?
 2356          * on C level chips.  Need to test, but for now, play it safe.
 2357          */
 2358         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_PCI_2_1_RETRY_BUG
 2359                   |  AHC_CACHETHEN_BUG;
 2360 
 2361 #if 0
 2362         uint32_t devconfig;
 2363 
 2364         /*
 2365          * Cachesize must also be zero due to stray DAC
 2366          * problem when sitting behind some bridges.
 2367          */
 2368         aic_pci_write_config(pci, CSIZE_LATTIME, 0, /*bytes*/1);
 2369         devconfig = aic_pci_read_config(pci, DEVCONFIG, /*bytes*/1);
 2370         devconfig |= MRDCEN;
 2371         aic_pci_write_config(pci, DEVCONFIG, devconfig, /*bytes*/1);
 2372 #endif
 2373         ahc->flags |= AHC_NEWEEPROM_FMT;
 2374         ahc->instruction_ram_size = 512;
 2375         return (0);
 2376 }
 2377 
 2378 static int
 2379 ahc_aic7896_setup(struct ahc_softc *ahc)
 2380 {
 2381         aic_dev_softc_t pci;
 2382 
 2383         pci = ahc->dev_softc;
 2384         ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
 2385         ahc->chip = AHC_AIC7896;
 2386         ahc->features = AHC_AIC7896_FE;
 2387         ahc->flags |= AHC_NEWEEPROM_FMT;
 2388         ahc->bugs |= AHC_CACHETHEN_DIS_BUG;
 2389         ahc->instruction_ram_size = 768;
 2390         return (0);
 2391 }
 2392 
 2393 static int
 2394 ahc_aic7899_setup(struct ahc_softc *ahc)
 2395 {
 2396         aic_dev_softc_t pci;
 2397 
 2398         pci = ahc->dev_softc;
 2399         ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
 2400         ahc->chip = AHC_AIC7899;
 2401         ahc->features = AHC_AIC7899_FE;
 2402         ahc->flags |= AHC_NEWEEPROM_FMT;
 2403         ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
 2404         ahc->instruction_ram_size = 1024;
 2405         return (0);
 2406 }
 2407 
 2408 static int
 2409 ahc_aha29160C_setup(struct ahc_softc *ahc)
 2410 {
 2411         int error;
 2412 
 2413         error = ahc_aic7899_setup(ahc);
 2414         if (error != 0)
 2415                 return (error);
 2416         ahc->features |= AHC_REMOVABLE;
 2417         return (0);
 2418 }
 2419 
 2420 static int
 2421 ahc_raid_setup(struct ahc_softc *ahc)
 2422 {
 2423         printf("RAID functionality unsupported\n");
 2424         return (ENXIO);
 2425 }
 2426 
 2427 static int
 2428 ahc_aha394XX_setup(struct ahc_softc *ahc)
 2429 {
 2430         aic_dev_softc_t pci;
 2431 
 2432         pci = ahc->dev_softc;
 2433         switch (aic_get_pci_slot(pci)) {
 2434         case AHC_394X_SLOT_CHANNEL_A:
 2435                 ahc->channel = 'A';
 2436                 break;
 2437         case AHC_394X_SLOT_CHANNEL_B:
 2438                 ahc->channel = 'B';
 2439                 break;
 2440         default:
 2441                 printf("adapter at unexpected slot %d\n"
 2442                        "unable to map to a channel\n",
 2443                        aic_get_pci_slot(pci));
 2444                 ahc->channel = 'A';
 2445         }
 2446         return (0);
 2447 }
 2448 
 2449 static int
 2450 ahc_aha398XX_setup(struct ahc_softc *ahc)
 2451 {
 2452         aic_dev_softc_t pci;
 2453 
 2454         pci = ahc->dev_softc;
 2455         switch (aic_get_pci_slot(pci)) {
 2456         case AHC_398X_SLOT_CHANNEL_A:
 2457                 ahc->channel = 'A';
 2458                 break;
 2459         case AHC_398X_SLOT_CHANNEL_B:
 2460                 ahc->channel = 'B';
 2461                 break;
 2462         case AHC_398X_SLOT_CHANNEL_C:
 2463                 ahc->channel = 'C';
 2464                 break;
 2465         default:
 2466                 printf("adapter at unexpected slot %d\n"
 2467                        "unable to map to a channel\n",
 2468                        aic_get_pci_slot(pci));
 2469                 ahc->channel = 'A';
 2470                 break;
 2471         }
 2472         ahc->flags |= AHC_LARGE_SEEPROM;
 2473         return (0);
 2474 }
 2475 
 2476 static int
 2477 ahc_aha494XX_setup(struct ahc_softc *ahc)
 2478 {
 2479         aic_dev_softc_t pci;
 2480 
 2481         pci = ahc->dev_softc;
 2482         switch (aic_get_pci_slot(pci)) {
 2483         case AHC_494X_SLOT_CHANNEL_A:
 2484                 ahc->channel = 'A';
 2485                 break;
 2486         case AHC_494X_SLOT_CHANNEL_B:
 2487                 ahc->channel = 'B';
 2488                 break;
 2489         case AHC_494X_SLOT_CHANNEL_C:
 2490                 ahc->channel = 'C';
 2491                 break;
 2492         case AHC_494X_SLOT_CHANNEL_D:
 2493                 ahc->channel = 'D';
 2494                 break;
 2495         default:
 2496                 printf("adapter at unexpected slot %d\n"
 2497                        "unable to map to a channel\n",
 2498                        aic_get_pci_slot(pci));
 2499                 ahc->channel = 'A';
 2500         }
 2501         ahc->flags |= AHC_LARGE_SEEPROM;
 2502         return (0);
 2503 }

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