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

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    1 /*
    2  * Generic driver for the BusLogic MultiMaster SCSI host adapters
    3  * Product specific probe and attach routines can be found in:
    4  * sys/dev/buslogic/bt_isa.c    BT-54X, BT-445 cards
    5  * sys/dev/buslogic/bt_mca.c    BT-64X, SDC3211B, SDC3211F
    6  * sys/dev/buslogic/bt_eisa.c   BT-74X, BT-75x cards, SDC3222F
    7  * sys/dev/buslogic/bt_pci.c    BT-946, BT-948, BT-956, BT-958 cards
    8  *
    9  * Copyright (c) 1998, 1999 Justin T. Gibbs.
   10  * All rights reserved.
   11  *
   12  * Redistribution and use in source and binary forms, with or without
   13  * modification, are permitted provided that the following conditions
   14  * are met:
   15  * 1. Redistributions of source code must retain the above copyright
   16  *    notice, this list of conditions, and the following disclaimer,
   17  *    without modification, immediately at the beginning of the file.
   18  * 2. The name of the author may not be used to endorse or promote products
   19  *    derived from this software without specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
   25  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   31  * SUCH DAMAGE.
   32  */
   33 
   34 #include <sys/cdefs.h>
   35 __FBSDID("$FreeBSD: releng/5.3/sys/dev/buslogic/bt.c 119451 2003-08-25 09:28:54Z obrien $");
   36 
   37  /*
   38   * Special thanks to Leonard N. Zubkoff for writing such a complete and
   39   * well documented Mylex/BusLogic MultiMaster driver for Linux.  Support
   40   * in this driver for the wide range of MultiMaster controllers and
   41   * firmware revisions, with their otherwise undocumented quirks, would not
   42   * have been possible without his efforts.
   43   */
   44 
   45 #include <sys/param.h>
   46 #include <sys/systm.h> 
   47 #include <sys/malloc.h>
   48 #include <sys/kernel.h>
   49 #include <sys/lock.h>
   50 #include <sys/mutex.h>
   51 #include <sys/sysctl.h>
   52 #include <sys/bus.h>
   53  
   54 /*
   55  * XXX It appears that BusLogic PCI adapters go out to lunch if you 
   56  *     attempt to perform memory mapped I/O.
   57  */
   58 #if 0
   59 #include <machine/bus_memio.h>
   60 #endif
   61 #include <machine/bus_pio.h>
   62 #include <machine/bus.h>
   63 #include <sys/rman.h>
   64 
   65 #include <cam/cam.h>
   66 #include <cam/cam_ccb.h>
   67 #include <cam/cam_sim.h>
   68 #include <cam/cam_xpt_sim.h>
   69 #include <cam/cam_debug.h>
   70 
   71 #include <cam/scsi/scsi_message.h>
   72 
   73 #include <vm/vm.h>
   74 #include <vm/pmap.h>
   75  
   76 #include <dev/buslogic/btreg.h>
   77 
   78 /* MailBox Management functions */
   79 static __inline void    btnextinbox(struct bt_softc *bt);
   80 static __inline void    btnextoutbox(struct bt_softc *bt);
   81 
   82 static __inline void
   83 btnextinbox(struct bt_softc *bt)
   84 {
   85         if (bt->cur_inbox == bt->last_inbox)
   86                 bt->cur_inbox = bt->in_boxes;
   87         else
   88                 bt->cur_inbox++;
   89 }
   90 
   91 static __inline void
   92 btnextoutbox(struct bt_softc *bt)
   93 {
   94         if (bt->cur_outbox == bt->last_outbox)
   95                 bt->cur_outbox = bt->out_boxes;
   96         else
   97                 bt->cur_outbox++;
   98 }
   99 
  100 /* CCB Mangement functions */
  101 static __inline u_int32_t               btccbvtop(struct bt_softc *bt,
  102                                                   struct bt_ccb *bccb);
  103 static __inline struct bt_ccb*          btccbptov(struct bt_softc *bt,
  104                                                   u_int32_t ccb_addr);
  105 static __inline u_int32_t               btsensepaddr(struct bt_softc *bt,
  106                                                      struct bt_ccb *bccb);
  107 static __inline struct scsi_sense_data* btsensevaddr(struct bt_softc *bt,
  108                                                      struct bt_ccb *bccb);
  109 
  110 static __inline u_int32_t
  111 btccbvtop(struct bt_softc *bt, struct bt_ccb *bccb)
  112 {
  113         return (bt->bt_ccb_physbase
  114               + (u_int32_t)((caddr_t)bccb - (caddr_t)bt->bt_ccb_array));
  115 }
  116 
  117 static __inline struct bt_ccb *
  118 btccbptov(struct bt_softc *bt, u_int32_t ccb_addr)
  119 {
  120         return (bt->bt_ccb_array +
  121                 ((struct bt_ccb*)(uintptr_t)ccb_addr - (struct bt_ccb*)(uintptr_t)bt->bt_ccb_physbase));
  122 }
  123 
  124 static __inline u_int32_t
  125 btsensepaddr(struct bt_softc *bt, struct bt_ccb *bccb)
  126 {
  127         u_int index;
  128 
  129         index = (u_int)(bccb - bt->bt_ccb_array);
  130         return (bt->sense_buffers_physbase
  131                 + (index * sizeof(struct scsi_sense_data)));
  132 }
  133 
  134 static __inline struct scsi_sense_data *
  135 btsensevaddr(struct bt_softc *bt, struct bt_ccb *bccb)
  136 {
  137         u_int index;
  138 
  139         index = (u_int)(bccb - bt->bt_ccb_array);
  140         return (bt->sense_buffers + index);
  141 }
  142 
  143 static __inline struct bt_ccb*  btgetccb(struct bt_softc *bt);
  144 static __inline void            btfreeccb(struct bt_softc *bt,
  145                                           struct bt_ccb *bccb);
  146 static void             btallocccbs(struct bt_softc *bt);
  147 static bus_dmamap_callback_t btexecuteccb;
  148 static void             btdone(struct bt_softc *bt, struct bt_ccb *bccb,
  149                                bt_mbi_comp_code_t comp_code);
  150 
  151 /* Host adapter command functions */
  152 static int      btreset(struct bt_softc* bt, int hard_reset);
  153 
  154 /* Initialization functions */
  155 static int                      btinitmboxes(struct bt_softc *bt);
  156 static bus_dmamap_callback_t    btmapmboxes;
  157 static bus_dmamap_callback_t    btmapccbs;
  158 static bus_dmamap_callback_t    btmapsgs;
  159 
  160 /* Transfer Negotiation Functions */
  161 static void btfetchtransinfo(struct bt_softc *bt,
  162                              struct ccb_trans_settings *cts);
  163 
  164 /* CAM SIM entry points */
  165 #define ccb_bccb_ptr spriv_ptr0
  166 #define ccb_bt_ptr spriv_ptr1
  167 static void     btaction(struct cam_sim *sim, union ccb *ccb);
  168 static void     btpoll(struct cam_sim *sim);
  169 
  170 /* Our timeout handler */
  171 timeout_t bttimeout;
  172 
  173 u_long bt_unit = 0;
  174 
  175 /*
  176  * XXX
  177  * Do our own re-probe protection until a configuration
  178  * manager can do it for us.  This ensures that we don't
  179  * reprobe a card already found by the EISA or PCI probes.
  180  */
  181 struct bt_isa_port bt_isa_ports[] =
  182 {
  183         { 0x130, 0, 4 },
  184         { 0x134, 0, 5 },
  185         { 0x230, 0, 2 },
  186         { 0x234, 0, 3 },
  187         { 0x330, 0, 0 },
  188         { 0x334, 0, 1 }
  189 };
  190 
  191 /*
  192  * I/O ports listed in the order enumerated by the
  193  * card for certain op codes.
  194  */
  195 u_int16_t bt_board_ports[] =
  196 {
  197         0x330,
  198         0x334,
  199         0x230,
  200         0x234,
  201         0x130,
  202         0x134
  203 };
  204 
  205 /* Exported functions */
  206 void
  207 bt_init_softc(device_t dev, struct resource *port,
  208               struct resource *irq, struct resource *drq)
  209 {
  210         struct bt_softc *bt = device_get_softc(dev);
  211 
  212         SLIST_INIT(&bt->free_bt_ccbs);
  213         LIST_INIT(&bt->pending_ccbs);
  214         SLIST_INIT(&bt->sg_maps);
  215         bt->dev = dev;
  216         bt->unit = device_get_unit(dev);
  217         bt->port = port;
  218         bt->irq = irq;
  219         bt->drq = drq;
  220         bt->tag = rman_get_bustag(port);
  221         bt->bsh = rman_get_bushandle(port);
  222 }
  223 
  224 void
  225 bt_free_softc(device_t dev)
  226 {
  227         struct bt_softc *bt = device_get_softc(dev);
  228 
  229         switch (bt->init_level) {
  230         default:
  231         case 11:
  232                 bus_dmamap_unload(bt->sense_dmat, bt->sense_dmamap);
  233         case 10:
  234                 bus_dmamem_free(bt->sense_dmat, bt->sense_buffers,
  235                                 bt->sense_dmamap);
  236         case 9:
  237                 bus_dma_tag_destroy(bt->sense_dmat);
  238         case 8:
  239         {
  240                 struct sg_map_node *sg_map;
  241 
  242                 while ((sg_map = SLIST_FIRST(&bt->sg_maps))!= NULL) {
  243                         SLIST_REMOVE_HEAD(&bt->sg_maps, links);
  244                         bus_dmamap_unload(bt->sg_dmat,
  245                                           sg_map->sg_dmamap);
  246                         bus_dmamem_free(bt->sg_dmat, sg_map->sg_vaddr,
  247                                         sg_map->sg_dmamap);
  248                         free(sg_map, M_DEVBUF);
  249                 }
  250                 bus_dma_tag_destroy(bt->sg_dmat);
  251         }
  252         case 7:
  253                 bus_dmamap_unload(bt->ccb_dmat, bt->ccb_dmamap);
  254                 /* FALLTHROUGH */
  255         case 6:
  256                 bus_dmamem_free(bt->ccb_dmat, bt->bt_ccb_array,
  257                                 bt->ccb_dmamap);
  258                 bus_dmamap_destroy(bt->ccb_dmat, bt->ccb_dmamap);
  259                 /* FALLTHROUGH */
  260         case 5:
  261                 bus_dma_tag_destroy(bt->ccb_dmat);
  262                 /* FALLTHROUGH */
  263         case 4:
  264                 bus_dmamap_unload(bt->mailbox_dmat, bt->mailbox_dmamap);
  265                 /* FALLTHROUGH */
  266         case 3:
  267                 bus_dmamem_free(bt->mailbox_dmat, bt->in_boxes,
  268                                 bt->mailbox_dmamap);
  269                 bus_dmamap_destroy(bt->mailbox_dmat, bt->mailbox_dmamap);
  270                 /* FALLTHROUGH */
  271         case 2:
  272                 bus_dma_tag_destroy(bt->buffer_dmat);
  273                 /* FALLTHROUGH */
  274         case 1:
  275                 bus_dma_tag_destroy(bt->mailbox_dmat);
  276                 /* FALLTHROUGH */
  277         case 0:
  278                 break;
  279         }
  280 }
  281 
  282 int
  283 bt_port_probe(device_t dev, struct bt_probe_info *info)
  284 {
  285         struct bt_softc *bt = device_get_softc(dev);
  286         config_data_t config_data;
  287         int error;
  288 
  289         /* See if there is really a card present */
  290         if (bt_probe(dev) || bt_fetch_adapter_info(dev))
  291                 return(1);
  292 
  293         /*
  294          * Determine our IRQ, and DMA settings and
  295          * export them to the configuration system.
  296          */
  297         error = bt_cmd(bt, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
  298                        (u_int8_t*)&config_data, sizeof(config_data),
  299                        DEFAULT_CMD_TIMEOUT);
  300         if (error != 0) {
  301                 printf("bt_port_probe: Could not determine IRQ or DMA "
  302                        "settings for adapter.\n");
  303                 return (1);
  304         }
  305 
  306         if (bt->model[0] == '5') {
  307                 /* DMA settings only make sense for ISA cards */
  308                 switch (config_data.dma_chan) {
  309                 case DMA_CHAN_5:
  310                         info->drq = 5;
  311                         break;
  312                 case DMA_CHAN_6:
  313                         info->drq = 6;
  314                         break;
  315                 case DMA_CHAN_7:
  316                         info->drq = 7;
  317                         break;
  318                 default:
  319                         printf("bt_port_probe: Invalid DMA setting "
  320                                "detected for adapter.\n");
  321                         return (1);
  322                 }
  323         } else {
  324                 /* VL/EISA/PCI DMA */
  325                 info->drq = -1;
  326         }
  327         switch (config_data.irq) {
  328         case IRQ_9:
  329         case IRQ_10:
  330         case IRQ_11:
  331         case IRQ_12:
  332         case IRQ_14:
  333         case IRQ_15:
  334                 info->irq = ffs(config_data.irq) + 8;
  335                 break;
  336         default:
  337                 printf("bt_port_probe: Invalid IRQ setting %x"
  338                        "detected for adapter.\n", config_data.irq);
  339                 return (1);
  340         }
  341         return (0);
  342 }
  343 
  344 /*
  345  * Probe the adapter and verify that the card is a BusLogic.
  346  */
  347 int
  348 bt_probe(device_t dev)
  349 {
  350         struct bt_softc *bt = device_get_softc(dev);
  351         esetup_info_data_t esetup_info;
  352         u_int    status;
  353         u_int    intstat;
  354         u_int    geometry;
  355         int      error;
  356         u_int8_t param;
  357 
  358         /*
  359          * See if the three I/O ports look reasonable.
  360          * Touch the minimal number of registers in the
  361          * failure case.
  362          */
  363         status = bt_inb(bt, STATUS_REG);
  364         if ((status == 0)
  365          || (status & (DIAG_ACTIVE|CMD_REG_BUSY|
  366                        STATUS_REG_RSVD|CMD_INVALID)) != 0) {
  367                 if (bootverbose)
  368                         device_printf(dev, "Failed Status Reg Test - %x\n",
  369                                status);
  370                 return (ENXIO);
  371         }
  372 
  373         intstat = bt_inb(bt, INTSTAT_REG);
  374         if ((intstat & INTSTAT_REG_RSVD) != 0) {
  375                 device_printf(dev, "Failed Intstat Reg Test\n");
  376                 return (ENXIO);
  377         }
  378 
  379         geometry = bt_inb(bt, GEOMETRY_REG);
  380         if (geometry == 0xFF) {
  381                 if (bootverbose)
  382                         device_printf(dev, "Failed Geometry Reg Test\n");
  383                 return (ENXIO);
  384         }
  385 
  386         /*
  387          * Looking good so far.  Final test is to reset the
  388          * adapter and attempt to fetch the extended setup
  389          * information.  This should filter out all 1542 cards.
  390          */
  391         if ((error = btreset(bt, /*hard_reset*/TRUE)) != 0) {
  392                 if (bootverbose)
  393                         device_printf(dev, "Failed Reset\n");
  394                 return (ENXIO);
  395         }
  396         
  397         param = sizeof(esetup_info);
  398         error = bt_cmd(bt, BOP_INQUIRE_ESETUP_INFO, &param, /*parmlen*/1,
  399                        (u_int8_t*)&esetup_info, sizeof(esetup_info),
  400                        DEFAULT_CMD_TIMEOUT);
  401         if (error != 0) {
  402                 return (ENXIO);
  403         }
  404 
  405         return (0);
  406 }
  407 
  408 /*
  409  * Pull the boards setup information and record it in our softc.
  410  */
  411 int
  412 bt_fetch_adapter_info(device_t dev)
  413 {
  414         struct bt_softc *bt = device_get_softc(dev);
  415         board_id_data_t board_id;
  416         esetup_info_data_t esetup_info;
  417         config_data_t config_data;
  418         int      error;
  419         u_int8_t length_param;
  420 
  421         /* First record the firmware version */
  422         error = bt_cmd(bt, BOP_INQUIRE_BOARD_ID, NULL, /*parmlen*/0,
  423                        (u_int8_t*)&board_id, sizeof(board_id),
  424                        DEFAULT_CMD_TIMEOUT);
  425         if (error != 0) {
  426                 device_printf(dev, "bt_fetch_adapter_info - Failed Get Board Info\n");
  427                 return (error);
  428         }
  429         bt->firmware_ver[0] = board_id.firmware_rev_major;
  430         bt->firmware_ver[1] = '.';
  431         bt->firmware_ver[2] = board_id.firmware_rev_minor;
  432         bt->firmware_ver[3] = '\0';
  433                 
  434         /*
  435          * Depending on the firmware major and minor version,
  436          * we may be able to fetch additional minor version info.
  437          */
  438         if (bt->firmware_ver[0] > '') {
  439                 
  440                 error = bt_cmd(bt, BOP_INQUIRE_FW_VER_3DIG, NULL, /*parmlen*/0,
  441                                (u_int8_t*)&bt->firmware_ver[3], 1,
  442                                DEFAULT_CMD_TIMEOUT);
  443                 if (error != 0) {
  444                         device_printf(dev,
  445                                       "bt_fetch_adapter_info - Failed Get "
  446                                       "Firmware 3rd Digit\n");
  447                         return (error);
  448                 }
  449                 if (bt->firmware_ver[3] == ' ')
  450                         bt->firmware_ver[3] = '\0';
  451                 bt->firmware_ver[4] = '\0';
  452         }
  453 
  454         if (strcmp(bt->firmware_ver, "3.3") >= 0) {
  455 
  456                 error = bt_cmd(bt, BOP_INQUIRE_FW_VER_4DIG, NULL, /*parmlen*/0,
  457                                (u_int8_t*)&bt->firmware_ver[4], 1,
  458                                DEFAULT_CMD_TIMEOUT);
  459                 if (error != 0) {
  460                         device_printf(dev,
  461                                       "bt_fetch_adapter_info - Failed Get "
  462                                       "Firmware 4th Digit\n");
  463                         return (error);
  464                 }
  465                 if (bt->firmware_ver[4] == ' ')
  466                         bt->firmware_ver[4] = '\0';
  467                 bt->firmware_ver[5] = '\0';
  468         }
  469 
  470         /*
  471          * Some boards do not handle the "recently documented"
  472          * Inquire Board Model Number command correctly or do not give
  473          * exact information.  Use the Firmware and Extended Setup
  474          * information in these cases to come up with the right answer.
  475          * The major firmware revision number indicates:
  476          *
  477          *      5.xx    BusLogic "W" Series Host Adapters:
  478          *              BT-948/958/958D
  479          *      4.xx    BusLogic "C" Series Host Adapters:
  480          *              BT-946C/956C/956CD/747C/757C/757CD/445C/545C/540CF
  481          *      3.xx    BusLogic "S" Series Host Adapters:
  482          *              BT-747S/747D/757S/757D/445S/545S/542D
  483          *              BT-542B/742A (revision H)
  484          *      2.xx    BusLogic "A" Series Host Adapters:
  485          *              BT-542B/742A (revision G and below)
  486          *      0.xx    AMI FastDisk VLB/EISA BusLogic Clone Host Adapter
  487          */
  488         length_param = sizeof(esetup_info);
  489         error = bt_cmd(bt, BOP_INQUIRE_ESETUP_INFO, &length_param, /*parmlen*/1,
  490                        (u_int8_t*)&esetup_info, sizeof(esetup_info),
  491                        DEFAULT_CMD_TIMEOUT);
  492         if (error != 0) {
  493                 return (error);
  494         }
  495         
  496         bt->bios_addr = esetup_info.bios_addr << 12;
  497 
  498         bt->mailbox_addrlimit = BUS_SPACE_MAXADDR;
  499         if (esetup_info.bus_type == 'A'
  500          && bt->firmware_ver[0] == '2') {
  501                 snprintf(bt->model, sizeof(bt->model), "542B");
  502         } else if (esetup_info.bus_type == 'E'
  503                 && bt->firmware_ver[0] == '2') {
  504 
  505                 /*
  506                  * The 742A seems to object if its mailboxes are
  507                  * allocated above the 16MB mark.
  508                  */
  509                 bt->mailbox_addrlimit = BUS_SPACE_MAXADDR_24BIT;
  510                 snprintf(bt->model, sizeof(bt->model), "742A");
  511         } else if (esetup_info.bus_type == 'E'
  512                 && bt->firmware_ver[0] == '') {
  513                 /* AMI FastDisk EISA Series 441 0.x */
  514                 snprintf(bt->model, sizeof(bt->model), "747A");
  515         } else {
  516                 ha_model_data_t model_data;
  517                 int i;
  518 
  519                 length_param = sizeof(model_data);
  520                 error = bt_cmd(bt, BOP_INQUIRE_MODEL, &length_param, 1,
  521                                (u_int8_t*)&model_data, sizeof(model_data),
  522                                DEFAULT_CMD_TIMEOUT);
  523                 if (error != 0) {
  524                         device_printf(dev,
  525                                       "bt_fetch_adapter_info - Failed Inquire "
  526                                       "Model Number\n");
  527                         return (error);
  528                 }
  529                 for (i = 0; i < sizeof(model_data.ascii_model); i++) {
  530                         bt->model[i] = model_data.ascii_model[i];
  531                         if (bt->model[i] == ' ')
  532                                 break;
  533                 }
  534                 bt->model[i] = '\0';
  535         }
  536 
  537         bt->level_trigger_ints = esetup_info.level_trigger_ints ? 1 : 0;
  538 
  539         /* SG element limits */
  540         bt->max_sg = esetup_info.max_sg;
  541 
  542         /* Set feature flags */
  543         bt->wide_bus = esetup_info.wide_bus;
  544         bt->diff_bus = esetup_info.diff_bus;
  545         bt->ultra_scsi = esetup_info.ultra_scsi;
  546 
  547         if ((bt->firmware_ver[0] == '5')
  548          || (bt->firmware_ver[0] == '4' && bt->wide_bus))
  549                 bt->extended_lun = TRUE;
  550 
  551         bt->strict_rr = (strcmp(bt->firmware_ver, "3.31") >= 0);
  552 
  553         bt->extended_trans =
  554             ((bt_inb(bt, GEOMETRY_REG) & EXTENDED_TRANSLATION) != 0);
  555 
  556         /*
  557          * Determine max CCB count and whether tagged queuing is
  558          * available based on controller type. Tagged queuing
  559          * only works on 'W' series adapters, 'C' series adapters
  560          * with firmware of rev 4.42 and higher, and 'S' series
  561          * adapters with firmware of rev 3.35 and higher.  The
  562          * maximum CCB counts are as follows:
  563          *
  564          *      192     BT-948/958/958D
  565          *      100     BT-946C/956C/956CD/747C/757C/757CD/445C
  566          *      50      BT-545C/540CF
  567          *      30      BT-747S/747D/757S/757D/445S/545S/542D/542B/742A
  568          */
  569         if (bt->firmware_ver[0] == '5') {
  570                 bt->max_ccbs = 192;
  571                 bt->tag_capable = TRUE;
  572         } else if (bt->firmware_ver[0] == '4') {
  573                 if (bt->model[0] == '5')
  574                         bt->max_ccbs = 50;
  575                 else
  576                         bt->max_ccbs = 100;
  577                 bt->tag_capable = (strcmp(bt->firmware_ver, "4.22") >= 0);
  578         } else {
  579                 bt->max_ccbs = 30;
  580                 if (bt->firmware_ver[0] == '3'
  581                  && (strcmp(bt->firmware_ver, "3.35") >= 0))
  582                         bt->tag_capable = TRUE;
  583                 else
  584                         bt->tag_capable = FALSE;
  585         }
  586 
  587         if (bt->tag_capable != FALSE)
  588                 bt->tags_permitted = ALL_TARGETS;
  589 
  590         /* Determine Sync/Wide/Disc settings */
  591         if (bt->firmware_ver[0] >= '4') {
  592                 auto_scsi_data_t auto_scsi_data;
  593                 fetch_lram_params_t fetch_lram_params;
  594                 int error;
  595                 
  596                 /*
  597                  * These settings are stored in the
  598                  * AutoSCSI data in LRAM of 'W' and 'C'
  599                  * adapters.
  600                  */
  601                 fetch_lram_params.offset = AUTO_SCSI_BYTE_OFFSET;
  602                 fetch_lram_params.response_len = sizeof(auto_scsi_data);
  603                 error = bt_cmd(bt, BOP_FETCH_LRAM,
  604                                (u_int8_t*)&fetch_lram_params,
  605                                sizeof(fetch_lram_params),
  606                                (u_int8_t*)&auto_scsi_data,
  607                                sizeof(auto_scsi_data), DEFAULT_CMD_TIMEOUT);
  608 
  609                 if (error != 0) {
  610                         device_printf(dev,
  611                                       "bt_fetch_adapter_info - Failed "
  612                                       "Get Auto SCSI Info\n");
  613                         return (error);
  614                 }
  615 
  616                 bt->disc_permitted = auto_scsi_data.low_disc_permitted
  617                                    | (auto_scsi_data.high_disc_permitted << 8);
  618                 bt->sync_permitted = auto_scsi_data.low_sync_permitted
  619                                    | (auto_scsi_data.high_sync_permitted << 8);
  620                 bt->fast_permitted = auto_scsi_data.low_fast_permitted
  621                                    | (auto_scsi_data.high_fast_permitted << 8);
  622                 bt->ultra_permitted = auto_scsi_data.low_ultra_permitted
  623                                    | (auto_scsi_data.high_ultra_permitted << 8);
  624                 bt->wide_permitted = auto_scsi_data.low_wide_permitted
  625                                    | (auto_scsi_data.high_wide_permitted << 8);
  626 
  627                 if (bt->ultra_scsi == FALSE)
  628                         bt->ultra_permitted = 0;
  629 
  630                 if (bt->wide_bus == FALSE)
  631                         bt->wide_permitted = 0;
  632         } else {
  633                 /*
  634                  * 'S' and 'A' series have this information in the setup
  635                  * information structure.
  636                  */
  637                 setup_data_t    setup_info;
  638 
  639                 length_param = sizeof(setup_info);
  640                 error = bt_cmd(bt, BOP_INQUIRE_SETUP_INFO, &length_param,
  641                                /*paramlen*/1, (u_int8_t*)&setup_info,
  642                                sizeof(setup_info), DEFAULT_CMD_TIMEOUT);
  643 
  644                 if (error != 0) {
  645                         device_printf(dev,
  646                                       "bt_fetch_adapter_info - Failed "
  647                                       "Get Setup Info\n");
  648                         return (error);
  649                 }
  650 
  651                 if (setup_info.initiate_sync != 0) {
  652                         bt->sync_permitted = ALL_TARGETS;
  653 
  654                         if (bt->model[0] == '7') {
  655                                 if (esetup_info.sync_neg10MB != 0)
  656                                         bt->fast_permitted = ALL_TARGETS;
  657                                 if (strcmp(bt->model, "757") == 0)
  658                                         bt->wide_permitted = ALL_TARGETS;
  659                         }
  660                 }
  661                 bt->disc_permitted = ALL_TARGETS;
  662         }
  663 
  664         /* We need as many mailboxes as we can have ccbs */
  665         bt->num_boxes = bt->max_ccbs;
  666 
  667         /* Determine our SCSI ID */
  668         
  669         error = bt_cmd(bt, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
  670                        (u_int8_t*)&config_data, sizeof(config_data),
  671                        DEFAULT_CMD_TIMEOUT);
  672         if (error != 0) {
  673                 device_printf(dev,
  674                               "bt_fetch_adapter_info - Failed Get Config\n");
  675                 return (error);
  676         }
  677         bt->scsi_id = config_data.scsi_id;
  678 
  679         return (0);
  680 }
  681 
  682 /*
  683  * Start the board, ready for normal operation
  684  */
  685 int
  686 bt_init(device_t dev)
  687 {
  688         struct bt_softc *bt = device_get_softc(dev);
  689 
  690         /* Announce the Adapter */
  691         device_printf(dev, "BT-%s FW Rev. %s ", bt->model, bt->firmware_ver);
  692 
  693         if (bt->ultra_scsi != 0)
  694                 printf("Ultra ");
  695 
  696         if (bt->wide_bus != 0)
  697                 printf("Wide ");
  698         else
  699                 printf("Narrow ");
  700 
  701         if (bt->diff_bus != 0)
  702                 printf("Diff ");
  703 
  704         printf("SCSI Host Adapter, SCSI ID %d, %d CCBs\n", bt->scsi_id,
  705                bt->max_ccbs);
  706 
  707         /*
  708          * Create our DMA tags.  These tags define the kinds of device
  709          * accessible memory allocations and memory mappings we will 
  710          * need to perform during normal operation.
  711          *
  712          * Unless we need to further restrict the allocation, we rely
  713          * on the restrictions of the parent dmat, hence the common
  714          * use of MAXADDR and MAXSIZE.
  715          */
  716 
  717         /* DMA tag for mapping buffers into device visible space. */
  718         if (bus_dma_tag_create( /* parent       */ bt->parent_dmat,
  719                                 /* alignment    */ 1,
  720                                 /* boundary     */ 0,
  721                                 /* lowaddr      */ BUS_SPACE_MAXADDR,
  722                                 /* highaddr     */ BUS_SPACE_MAXADDR,
  723                                 /* filter       */ NULL,
  724                                 /* filterarg    */ NULL,
  725                                 /* maxsize      */ MAXBSIZE,
  726                                 /* nsegments    */ BT_NSEG,
  727                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
  728                                 /* flags        */ BUS_DMA_ALLOCNOW,
  729                                 /* lockfunc     */ busdma_lock_mutex,
  730                                 /* lockarg      */ &Giant,
  731                                 &bt->buffer_dmat) != 0) {
  732                 goto error_exit;
  733         }
  734 
  735         bt->init_level++;
  736         /* DMA tag for our mailboxes */
  737         if (bus_dma_tag_create( /* parent       */ bt->parent_dmat,
  738                                 /* alignment    */ 1,
  739                                 /* boundary     */ 0,
  740                                 /* lowaddr      */ bt->mailbox_addrlimit,
  741                                 /* highaddr     */ BUS_SPACE_MAXADDR,
  742                                 /* filter       */ NULL,
  743                                 /* filterarg    */ NULL,
  744                                 /* maxsize      */ bt->num_boxes *
  745                                                    (sizeof(bt_mbox_in_t) +
  746                                                     sizeof(bt_mbox_out_t)),
  747                                 /* nsegments    */ 1,
  748                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
  749                                 /* flags        */ 0,
  750                                 /* lockfunc     */ busdma_lock_mutex,
  751                                 /* lockarg      */ &Giant,
  752                                 &bt->mailbox_dmat) != 0) {
  753                 goto error_exit;
  754         }
  755 
  756         bt->init_level++;
  757 
  758         /* Allocation for our mailboxes */
  759         if (bus_dmamem_alloc(bt->mailbox_dmat, (void **)&bt->out_boxes,
  760                              BUS_DMA_NOWAIT, &bt->mailbox_dmamap) != 0) {
  761                 goto error_exit;
  762         }
  763 
  764         bt->init_level++;
  765 
  766         /* And permanently map them */
  767         bus_dmamap_load(bt->mailbox_dmat, bt->mailbox_dmamap,
  768                         bt->out_boxes,
  769                         bt->num_boxes * (sizeof(bt_mbox_in_t)
  770                                        + sizeof(bt_mbox_out_t)),
  771                         btmapmboxes, bt, /*flags*/0);
  772 
  773         bt->init_level++;
  774 
  775         bt->in_boxes = (bt_mbox_in_t *)&bt->out_boxes[bt->num_boxes];
  776 
  777         btinitmboxes(bt);
  778 
  779         /* DMA tag for our ccb structures */
  780         if (bus_dma_tag_create( /* parent       */ bt->parent_dmat,
  781                                 /* alignment    */ 1,
  782                                 /* boundary     */ 0,
  783                                 /* lowaddr      */ BUS_SPACE_MAXADDR,
  784                                 /* highaddr     */ BUS_SPACE_MAXADDR,
  785                                 /* filter       */ NULL,
  786                                 /* filterarg    */ NULL,
  787                                 /* maxsize      */ bt->max_ccbs *
  788                                                    sizeof(struct bt_ccb),
  789                                 /* nsegments    */ 1,
  790                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
  791                                 /* flags        */ 0,
  792                                 /* lockfunc     */ busdma_lock_mutex,
  793                                 /* lockarg      */ &Giant,
  794                                 &bt->ccb_dmat) != 0) {
  795                 goto error_exit;
  796         }
  797 
  798         bt->init_level++;
  799 
  800         /* Allocation for our ccbs */
  801         if (bus_dmamem_alloc(bt->ccb_dmat, (void **)&bt->bt_ccb_array,
  802                              BUS_DMA_NOWAIT, &bt->ccb_dmamap) != 0) {
  803                 goto error_exit;
  804         }
  805 
  806         bt->init_level++;
  807 
  808         /* And permanently map them */
  809         bus_dmamap_load(bt->ccb_dmat, bt->ccb_dmamap,
  810                         bt->bt_ccb_array,
  811                         bt->max_ccbs * sizeof(struct bt_ccb),
  812                         btmapccbs, bt, /*flags*/0);
  813 
  814         bt->init_level++;
  815 
  816         /* DMA tag for our S/G structures.  We allocate in page sized chunks */
  817         if (bus_dma_tag_create( /* parent       */ bt->parent_dmat,
  818                                 /* alignment    */ 1,
  819                                 /* boundary     */ 0,
  820                                 /* lowaddr      */ BUS_SPACE_MAXADDR,
  821                                 /* highaddr     */ BUS_SPACE_MAXADDR,
  822                                 /* filter       */ NULL,
  823                                 /* filterarg    */ NULL,
  824                                 /* maxsize      */ PAGE_SIZE,
  825                                 /* nsegments    */ 1,
  826                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
  827                                 /* flags        */ 0,
  828                                 /* lockfunc     */ busdma_lock_mutex,
  829                                 /* lockarg      */ &Giant,
  830                                 &bt->sg_dmat) != 0) {
  831                 goto error_exit;
  832         }
  833 
  834         bt->init_level++;
  835 
  836         /* Perform initial CCB allocation */
  837         bzero(bt->bt_ccb_array, bt->max_ccbs * sizeof(struct bt_ccb));
  838         btallocccbs(bt);
  839 
  840         if (bt->num_ccbs == 0) {
  841                 device_printf(dev,
  842                               "bt_init - Unable to allocate initial ccbs\n");
  843                 goto error_exit;
  844         }
  845 
  846         /*
  847          * Note that we are going and return (to probe)
  848          */
  849         return 0;
  850 
  851 error_exit:
  852 
  853         return (ENXIO);
  854 }
  855 
  856 int
  857 bt_attach(device_t dev)
  858 {
  859         struct bt_softc *bt = device_get_softc(dev);
  860         int tagged_dev_openings;
  861         struct cam_devq *devq;
  862         int error;
  863 
  864         /*
  865          * We reserve 1 ccb for error recovery, so don't
  866          * tell the XPT about it.
  867          */
  868         if (bt->tag_capable != 0)
  869                 tagged_dev_openings = bt->max_ccbs - 1;
  870         else
  871                 tagged_dev_openings = 0;
  872 
  873         /*
  874          * Create the device queue for our SIM.
  875          */
  876         devq = cam_simq_alloc(bt->max_ccbs - 1);
  877         if (devq == NULL)
  878                 return (ENOMEM);
  879 
  880         /*
  881          * Construct our SIM entry
  882          */
  883         bt->sim = cam_sim_alloc(btaction, btpoll, "bt", bt, bt->unit,
  884                                 2, tagged_dev_openings, devq);
  885         if (bt->sim == NULL) {
  886                 cam_simq_free(devq);
  887                 return (ENOMEM);
  888         }
  889         
  890         if (xpt_bus_register(bt->sim, 0) != CAM_SUCCESS) {
  891                 cam_sim_free(bt->sim, /*free_devq*/TRUE);
  892                 return (ENXIO);
  893         }
  894         
  895         if (xpt_create_path(&bt->path, /*periph*/NULL,
  896                             cam_sim_path(bt->sim), CAM_TARGET_WILDCARD,
  897                             CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
  898                 xpt_bus_deregister(cam_sim_path(bt->sim));
  899                 cam_sim_free(bt->sim, /*free_devq*/TRUE);
  900                 return (ENXIO);
  901         }
  902                 
  903         /*
  904          * Setup interrupt.
  905          */
  906         error = bus_setup_intr(dev, bt->irq, INTR_TYPE_CAM|INTR_ENTROPY,
  907                                bt_intr, bt, &bt->ih);
  908         if (error) {
  909                 device_printf(dev, "bus_setup_intr() failed: %d\n", error);
  910                 return (error);
  911         }
  912 
  913         return (0);
  914 }
  915 
  916 int
  917 bt_check_probed_iop(u_int ioport)
  918 {
  919         u_int i;
  920 
  921         for (i = 0; i < BT_NUM_ISAPORTS; i++) {
  922                 if (bt_isa_ports[i].addr == ioport) {
  923                         if (bt_isa_ports[i].probed != 0)
  924                                 return (1);
  925                         else {
  926                                 return (0);
  927                         }
  928                 }
  929         }
  930         return (1);
  931 }
  932 
  933 void
  934 bt_mark_probed_bio(isa_compat_io_t port)
  935 {
  936         if (port < BIO_DISABLED)
  937                 bt_mark_probed_iop(bt_board_ports[port]);
  938 }
  939 
  940 void
  941 bt_mark_probed_iop(u_int ioport)
  942 {
  943         u_int i;
  944 
  945         for (i = 0; i < BT_NUM_ISAPORTS; i++) {
  946                 if (ioport == bt_isa_ports[i].addr) {
  947                         bt_isa_ports[i].probed = 1;
  948                         break;
  949                 }
  950         }
  951 }
  952 
  953 void
  954 bt_find_probe_range(int ioport, int *port_index, int *max_port_index)
  955 {
  956         if (ioport > 0) {
  957                 int i;
  958 
  959                 for (i = 0;i < BT_NUM_ISAPORTS; i++)
  960                         if (ioport <= bt_isa_ports[i].addr)
  961                                 break;
  962                 if ((i >= BT_NUM_ISAPORTS)
  963                  || (ioport != bt_isa_ports[i].addr)) {
  964                         printf(
  965 "bt_find_probe_range: Invalid baseport of 0x%x specified.\n"
  966 "bt_find_probe_range: Nearest valid baseport is 0x%x.\n"
  967 "bt_find_probe_range: Failing probe.\n",
  968                                ioport,
  969                                (i < BT_NUM_ISAPORTS)
  970                                     ? bt_isa_ports[i].addr
  971                                     : bt_isa_ports[BT_NUM_ISAPORTS - 1].addr);
  972                         *port_index = *max_port_index = -1;
  973                         return;
  974                 }
  975                 *port_index = *max_port_index = bt_isa_ports[i].bio;
  976         } else {
  977                 *port_index = 0;
  978                 *max_port_index = BT_NUM_ISAPORTS - 1;
  979         }
  980 }
  981 
  982 int
  983 bt_iop_from_bio(isa_compat_io_t bio_index)
  984 {
  985         if (bio_index >= 0 && bio_index < BT_NUM_ISAPORTS)
  986                 return (bt_board_ports[bio_index]);
  987         return (-1);
  988 }
  989 
  990 
  991 static void
  992 btallocccbs(struct bt_softc *bt)
  993 {
  994         struct bt_ccb *next_ccb;
  995         struct sg_map_node *sg_map;
  996         bus_addr_t physaddr;
  997         bt_sg_t *segs;
  998         int newcount;
  999         int i;
 1000 
 1001         if (bt->num_ccbs >= bt->max_ccbs)
 1002                 /* Can't allocate any more */
 1003                 return;
 1004 
 1005         next_ccb = &bt->bt_ccb_array[bt->num_ccbs];
 1006 
 1007         sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_NOWAIT);
 1008 
 1009         if (sg_map == NULL)
 1010                 goto error_exit;
 1011 
 1012         /* Allocate S/G space for the next batch of CCBS */
 1013         if (bus_dmamem_alloc(bt->sg_dmat, (void **)&sg_map->sg_vaddr,
 1014                              BUS_DMA_NOWAIT, &sg_map->sg_dmamap) != 0) {
 1015                 free(sg_map, M_DEVBUF);
 1016                 goto error_exit;
 1017         }
 1018 
 1019         SLIST_INSERT_HEAD(&bt->sg_maps, sg_map, links);
 1020 
 1021         bus_dmamap_load(bt->sg_dmat, sg_map->sg_dmamap, sg_map->sg_vaddr,
 1022                         PAGE_SIZE, btmapsgs, bt, /*flags*/0);
 1023         
 1024         segs = sg_map->sg_vaddr;
 1025         physaddr = sg_map->sg_physaddr;
 1026 
 1027         newcount = (PAGE_SIZE / (BT_NSEG * sizeof(bt_sg_t)));
 1028         for (i = 0; bt->num_ccbs < bt->max_ccbs && i < newcount; i++) {
 1029                 int error;
 1030 
 1031                 next_ccb->sg_list = segs;
 1032                 next_ccb->sg_list_phys = physaddr;
 1033                 next_ccb->flags = BCCB_FREE;
 1034                 error = bus_dmamap_create(bt->buffer_dmat, /*flags*/0,
 1035                                           &next_ccb->dmamap);
 1036                 if (error != 0)
 1037                         break;
 1038                 SLIST_INSERT_HEAD(&bt->free_bt_ccbs, next_ccb, links);
 1039                 segs += BT_NSEG;
 1040                 physaddr += (BT_NSEG * sizeof(bt_sg_t));
 1041                 next_ccb++;
 1042                 bt->num_ccbs++;
 1043         }
 1044 
 1045         /* Reserve a CCB for error recovery */
 1046         if (bt->recovery_bccb == NULL) {
 1047                 bt->recovery_bccb = SLIST_FIRST(&bt->free_bt_ccbs);
 1048                 SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links);
 1049         }
 1050 
 1051         if (SLIST_FIRST(&bt->free_bt_ccbs) != NULL)
 1052                 return;
 1053 
 1054 error_exit:
 1055         device_printf(bt->dev, "Can't malloc BCCBs\n");
 1056 }
 1057 
 1058 static __inline void
 1059 btfreeccb(struct bt_softc *bt, struct bt_ccb *bccb)
 1060 {
 1061         int s;
 1062 
 1063         s = splcam();
 1064         if ((bccb->flags & BCCB_ACTIVE) != 0)
 1065                 LIST_REMOVE(&bccb->ccb->ccb_h, sim_links.le);
 1066         if (bt->resource_shortage != 0
 1067          && (bccb->ccb->ccb_h.status & CAM_RELEASE_SIMQ) == 0) {
 1068                 bccb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
 1069                 bt->resource_shortage = FALSE;
 1070         }
 1071         bccb->flags = BCCB_FREE;
 1072         SLIST_INSERT_HEAD(&bt->free_bt_ccbs, bccb, links);
 1073         bt->active_ccbs--;
 1074         splx(s);
 1075 }
 1076 
 1077 static __inline struct bt_ccb*
 1078 btgetccb(struct bt_softc *bt)
 1079 {
 1080         struct  bt_ccb* bccb;
 1081         int     s;
 1082 
 1083         s = splcam();
 1084         if ((bccb = SLIST_FIRST(&bt->free_bt_ccbs)) != NULL) {
 1085                 SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links);
 1086                 bt->active_ccbs++;
 1087         } else {
 1088                 btallocccbs(bt);
 1089                 bccb = SLIST_FIRST(&bt->free_bt_ccbs);
 1090                 if (bccb != NULL) {
 1091                         SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links);
 1092                         bt->active_ccbs++;
 1093                 }
 1094         }
 1095         splx(s);
 1096 
 1097         return (bccb);
 1098 }
 1099 
 1100 static void
 1101 btaction(struct cam_sim *sim, union ccb *ccb)
 1102 {
 1103         struct  bt_softc *bt;
 1104 
 1105         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("btaction\n"));
 1106         
 1107         bt = (struct bt_softc *)cam_sim_softc(sim);
 1108         
 1109         switch (ccb->ccb_h.func_code) {
 1110         /* Common cases first */
 1111         case XPT_SCSI_IO:       /* Execute the requested I/O operation */
 1112         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
 1113         {
 1114                 struct  bt_ccb  *bccb;
 1115                 struct  bt_hccb *hccb;
 1116 
 1117                 /*
 1118                  * get a bccb to use.
 1119                  */
 1120                 if ((bccb = btgetccb(bt)) == NULL) {
 1121                         int s;
 1122 
 1123                         s = splcam();
 1124                         bt->resource_shortage = TRUE;
 1125                         splx(s);
 1126                         xpt_freeze_simq(bt->sim, /*count*/1);
 1127                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
 1128                         xpt_done(ccb);
 1129                         return;
 1130                 }
 1131                 
 1132                 hccb = &bccb->hccb;
 1133 
 1134                 /*
 1135                  * So we can find the BCCB when an abort is requested
 1136                  */
 1137                 bccb->ccb = ccb;
 1138                 ccb->ccb_h.ccb_bccb_ptr = bccb;
 1139                 ccb->ccb_h.ccb_bt_ptr = bt;
 1140 
 1141                 /*
 1142                  * Put all the arguments for the xfer in the bccb
 1143                  */
 1144                 hccb->target_id = ccb->ccb_h.target_id;
 1145                 hccb->target_lun = ccb->ccb_h.target_lun;
 1146                 hccb->btstat = 0;
 1147                 hccb->sdstat = 0;
 1148 
 1149                 if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
 1150                         struct ccb_scsiio *csio;
 1151                         struct ccb_hdr *ccbh;
 1152 
 1153                         csio = &ccb->csio;
 1154                         ccbh = &csio->ccb_h;
 1155                         hccb->opcode = INITIATOR_CCB_WRESID;
 1156                         hccb->datain = (ccb->ccb_h.flags & CAM_DIR_IN) ? 1 : 0;
 1157                         hccb->dataout =(ccb->ccb_h.flags & CAM_DIR_OUT) ? 1 : 0;
 1158                         hccb->cmd_len = csio->cdb_len;
 1159                         if (hccb->cmd_len > sizeof(hccb->scsi_cdb)) {
 1160                                 ccb->ccb_h.status = CAM_REQ_INVALID;
 1161                                 btfreeccb(bt, bccb);
 1162                                 xpt_done(ccb);
 1163                                 return;
 1164                         }
 1165                         hccb->sense_len = csio->sense_len;
 1166                         if ((ccbh->flags & CAM_TAG_ACTION_VALID) != 0
 1167                          && ccb->csio.tag_action != CAM_TAG_ACTION_NONE) {
 1168                                 hccb->tag_enable = TRUE;
 1169                                 hccb->tag_type = (ccb->csio.tag_action & 0x3);
 1170                         } else {
 1171                                 hccb->tag_enable = FALSE;
 1172                                 hccb->tag_type = 0;
 1173                         }
 1174                         if ((ccbh->flags & CAM_CDB_POINTER) != 0) {
 1175                                 if ((ccbh->flags & CAM_CDB_PHYS) == 0) {
 1176                                         bcopy(csio->cdb_io.cdb_ptr,
 1177                                               hccb->scsi_cdb, hccb->cmd_len);
 1178                                 } else {
 1179                                         /* I guess I could map it in... */
 1180                                         ccbh->status = CAM_REQ_INVALID;
 1181                                         btfreeccb(bt, bccb);
 1182                                         xpt_done(ccb);
 1183                                         return;
 1184                                 }
 1185                         } else {
 1186                                 bcopy(csio->cdb_io.cdb_bytes,
 1187                                       hccb->scsi_cdb, hccb->cmd_len);
 1188                         }
 1189                         /* If need be, bounce our sense buffer */
 1190                         if (bt->sense_buffers != NULL) {
 1191                                 hccb->sense_addr = btsensepaddr(bt, bccb);
 1192                         } else {
 1193                                 hccb->sense_addr = vtophys(&csio->sense_data);
 1194                         }
 1195                         /*
 1196                          * If we have any data to send with this command,
 1197                          * map it into bus space.
 1198                          */
 1199                         /* Only use S/G if there is a transfer */
 1200                         if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 1201                                 if ((ccbh->flags & CAM_SCATTER_VALID) == 0) {
 1202                                         /*
 1203                                          * We've been given a pointer
 1204                                          * to a single buffer.
 1205                                          */
 1206                                         if ((ccbh->flags & CAM_DATA_PHYS)==0) {
 1207                                                 int s;
 1208                                                 int error;
 1209 
 1210                                                 s = splsoftvm();
 1211                                                 error = bus_dmamap_load(
 1212                                                     bt->buffer_dmat,
 1213                                                     bccb->dmamap,
 1214                                                     csio->data_ptr,
 1215                                                     csio->dxfer_len,
 1216                                                     btexecuteccb,
 1217                                                     bccb,
 1218                                                     /*flags*/0);
 1219                                                 if (error == EINPROGRESS) {
 1220                                                         /*
 1221                                                          * So as to maintain
 1222                                                          * ordering, freeze the
 1223                                                          * controller queue
 1224                                                          * until our mapping is
 1225                                                          * returned.
 1226                                                          */
 1227                                                         xpt_freeze_simq(bt->sim,
 1228                                                                         1);
 1229                                                         csio->ccb_h.status |=
 1230                                                             CAM_RELEASE_SIMQ;
 1231                                                 }
 1232                                                 splx(s);
 1233                                         } else {
 1234                                                 struct bus_dma_segment seg; 
 1235 
 1236                                                 /* Pointer to physical buffer */
 1237                                                 seg.ds_addr =
 1238                                                     (bus_addr_t)csio->data_ptr;
 1239                                                 seg.ds_len = csio->dxfer_len;
 1240                                                 btexecuteccb(bccb, &seg, 1, 0);
 1241                                         }
 1242                                 } else {
 1243                                         struct bus_dma_segment *segs;
 1244 
 1245                                         if ((ccbh->flags & CAM_DATA_PHYS) != 0)
 1246                                                 panic("btaction - Physical "
 1247                                                       "segment pointers "
 1248                                                       "unsupported");
 1249 
 1250                                         if ((ccbh->flags&CAM_SG_LIST_PHYS)==0)
 1251                                                 panic("btaction - Virtual "
 1252                                                       "segment addresses "
 1253                                                       "unsupported");
 1254 
 1255                                         /* Just use the segments provided */
 1256                                         segs = (struct bus_dma_segment *)
 1257                                             csio->data_ptr;
 1258                                         btexecuteccb(bccb, segs,
 1259                                                      csio->sglist_cnt, 0);
 1260                                 }
 1261                         } else {
 1262                                 btexecuteccb(bccb, NULL, 0, 0);
 1263                         }
 1264                 } else {
 1265                         hccb->opcode = INITIATOR_BUS_DEV_RESET;
 1266                         /* No data transfer */
 1267                         hccb->datain = TRUE;
 1268                         hccb->dataout = TRUE;
 1269                         hccb->cmd_len = 0;
 1270                         hccb->sense_len = 0;
 1271                         hccb->tag_enable = FALSE;
 1272                         hccb->tag_type = 0;
 1273                         btexecuteccb(bccb, NULL, 0, 0);
 1274                 }
 1275                 break;
 1276         }
 1277         case XPT_EN_LUN:                /* Enable LUN as a target */
 1278         case XPT_TARGET_IO:             /* Execute target I/O request */
 1279         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
 1280         case XPT_CONT_TARGET_IO:        /* Continue Host Target I/O Connection*/
 1281         case XPT_ABORT:                 /* Abort the specified CCB */
 1282                 /* XXX Implement */
 1283                 ccb->ccb_h.status = CAM_REQ_INVALID;
 1284                 xpt_done(ccb);
 1285                 break;
 1286         case XPT_SET_TRAN_SETTINGS:
 1287         {
 1288                 /* XXX Implement */
 1289                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 1290                 xpt_done(ccb);
 1291                 break;
 1292         }
 1293         case XPT_GET_TRAN_SETTINGS:
 1294         /* Get default/user set transfer settings for the target */
 1295         {
 1296                 struct  ccb_trans_settings *cts;
 1297                 u_int   target_mask;
 1298 
 1299                 cts = &ccb->cts;
 1300                 target_mask = 0x01 << ccb->ccb_h.target_id;
 1301 #ifdef  CAM_NEW_TRAN_CODE
 1302                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
 1303                         struct ccb_trans_settings_scsi *scsi =
 1304                             &cts->proto_specific.scsi;
 1305                         struct ccb_trans_settings_spi *spi =
 1306                             &cts->xport_specific.spi;
 1307                         cts->protocol = PROTO_SCSI;
 1308                         cts->protocol_version = SCSI_REV_2;
 1309                         cts->transport = XPORT_SPI;
 1310                         cts->transport_version = 2;
 1311 
 1312                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
 1313                         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
 1314 
 1315                         if ((bt->disc_permitted & target_mask) != 0)
 1316                                 spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 1317                         if ((bt->tags_permitted & target_mask) != 0)
 1318                                 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 1319 
 1320                         if ((bt->ultra_permitted & target_mask) != 0)
 1321                                 spi->sync_period = 12;
 1322                         else if ((bt->fast_permitted & target_mask) != 0)
 1323                                 spi->sync_period = 25;
 1324                         else if ((bt->sync_permitted & target_mask) != 0)
 1325                                 spi->sync_period = 50;
 1326                         else
 1327                                 spi->sync_period = 0;
 1328 
 1329                         if (spi->sync_period != 0)
 1330                                 spi->sync_offset = 15;
 1331 
 1332                         spi->valid |= CTS_SPI_VALID_SYNC_RATE;
 1333                         spi->valid |= CTS_SPI_VALID_SYNC_OFFSET;
 1334 
 1335                         spi->valid |= CTS_SPI_VALID_BUS_WIDTH;
 1336                         if ((bt->wide_permitted & target_mask) != 0)
 1337                                 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
 1338                         else
 1339                                 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
 1340 
 1341                         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
 1342                                 scsi->valid = CTS_SCSI_VALID_TQ;
 1343                                 spi->valid |= CTS_SPI_VALID_DISC;
 1344                         } else
 1345                                 scsi->valid = 0;
 1346                 } else {
 1347 #else
 1348                 if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) {
 1349                         cts->flags = 0;
 1350                         if ((bt->disc_permitted & target_mask) != 0)
 1351                                 cts->flags |= CCB_TRANS_DISC_ENB;
 1352                         if ((bt->tags_permitted & target_mask) != 0)
 1353                                 cts->flags |= CCB_TRANS_TAG_ENB;
 1354                         if ((bt->wide_permitted & target_mask) != 0)
 1355                                 cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
 1356                         else
 1357                                 cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
 1358                         if ((bt->ultra_permitted & target_mask) != 0)
 1359                                 cts->sync_period = 12;
 1360                         else if ((bt->fast_permitted & target_mask) != 0)
 1361                                 cts->sync_period = 25;
 1362                         else if ((bt->sync_permitted & target_mask) != 0)
 1363                                 cts->sync_period = 50;
 1364                         else
 1365                                 cts->sync_period = 0;
 1366 
 1367                         if (cts->sync_period != 0)
 1368                                 cts->sync_offset = 15;
 1369 
 1370                         cts->valid = CCB_TRANS_SYNC_RATE_VALID
 1371                                    | CCB_TRANS_SYNC_OFFSET_VALID
 1372                                    | CCB_TRANS_BUS_WIDTH_VALID
 1373                                    | CCB_TRANS_DISC_VALID
 1374                                    | CCB_TRANS_TQ_VALID;
 1375                 } else {
 1376 #endif
 1377                         btfetchtransinfo(bt, cts);
 1378                 }
 1379 
 1380                 ccb->ccb_h.status = CAM_REQ_CMP;
 1381                 xpt_done(ccb);
 1382                 break;
 1383         }
 1384         case XPT_CALC_GEOMETRY:
 1385         {
 1386                 struct    ccb_calc_geometry *ccg;
 1387                 u_int32_t size_mb;
 1388                 u_int32_t secs_per_cylinder;
 1389 
 1390                 ccg = &ccb->ccg;
 1391                 size_mb = ccg->volume_size
 1392                         / ((1024L * 1024L) / ccg->block_size);
 1393                 
 1394                 if (size_mb >= 1024 && (bt->extended_trans != 0)) {
 1395                         if (size_mb >= 2048) {
 1396                                 ccg->heads = 255;
 1397                                 ccg->secs_per_track = 63;
 1398                         } else {
 1399                                 ccg->heads = 128;
 1400                                 ccg->secs_per_track = 32;
 1401                         }
 1402                 } else {
 1403                         ccg->heads = 64;
 1404                         ccg->secs_per_track = 32;
 1405                 }
 1406                 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
 1407                 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
 1408                 ccb->ccb_h.status = CAM_REQ_CMP;
 1409                 xpt_done(ccb);
 1410                 break;
 1411         }
 1412         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
 1413         {
 1414                 btreset(bt, /*hardreset*/TRUE);
 1415                 ccb->ccb_h.status = CAM_REQ_CMP;
 1416                 xpt_done(ccb);
 1417                 break;
 1418         }
 1419         case XPT_TERM_IO:               /* Terminate the I/O process */
 1420                 /* XXX Implement */
 1421                 ccb->ccb_h.status = CAM_REQ_INVALID;
 1422                 xpt_done(ccb);
 1423                 break;
 1424         case XPT_PATH_INQ:              /* Path routing inquiry */
 1425         {
 1426                 struct ccb_pathinq *cpi = &ccb->cpi;
 1427                 
 1428                 cpi->version_num = 1; /* XXX??? */
 1429                 cpi->hba_inquiry = PI_SDTR_ABLE;
 1430                 if (bt->tag_capable != 0)
 1431                         cpi->hba_inquiry |= PI_TAG_ABLE;
 1432                 if (bt->wide_bus != 0)
 1433                         cpi->hba_inquiry |= PI_WIDE_16;
 1434                 cpi->target_sprt = 0;
 1435                 cpi->hba_misc = 0;
 1436                 cpi->hba_eng_cnt = 0;
 1437                 cpi->max_target = bt->wide_bus ? 15 : 7;
 1438                 cpi->max_lun = 7;
 1439                 cpi->initiator_id = bt->scsi_id;
 1440                 cpi->bus_id = cam_sim_bus(sim);
 1441                 cpi->base_transfer_speed = 3300;
 1442                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 1443                 strncpy(cpi->hba_vid, "BusLogic", HBA_IDLEN);
 1444                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 1445                 cpi->unit_number = cam_sim_unit(sim);
 1446                 cpi->ccb_h.status = CAM_REQ_CMP;
 1447 #ifdef  CAM_NEW_TRAN_CODE
 1448                 cpi->transport = XPORT_SPI;
 1449                 cpi->transport_version = 2;
 1450                 cpi->protocol = PROTO_SCSI;
 1451                 cpi->protocol_version = SCSI_REV_2;
 1452 #endif
 1453                 xpt_done(ccb);
 1454                 break;
 1455         }
 1456         default:
 1457                 ccb->ccb_h.status = CAM_REQ_INVALID;
 1458                 xpt_done(ccb);
 1459                 break;
 1460         }
 1461 }
 1462 
 1463 static void
 1464 btexecuteccb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error)
 1465 {
 1466         struct   bt_ccb *bccb;
 1467         union    ccb *ccb;
 1468         struct   bt_softc *bt;
 1469         int      s;
 1470 
 1471         bccb = (struct bt_ccb *)arg;
 1472         ccb = bccb->ccb;
 1473         bt = (struct bt_softc *)ccb->ccb_h.ccb_bt_ptr;
 1474 
 1475         if (error != 0) {
 1476                 if (error != EFBIG)
 1477                         device_printf(bt->dev,
 1478                                       "Unexepected error 0x%x returned from "
 1479                                       "bus_dmamap_load\n", error);
 1480                 if (ccb->ccb_h.status == CAM_REQ_INPROG) {
 1481                         xpt_freeze_devq(ccb->ccb_h.path, /*count*/1);
 1482                         ccb->ccb_h.status = CAM_REQ_TOO_BIG|CAM_DEV_QFRZN;
 1483                 }
 1484                 btfreeccb(bt, bccb);
 1485                 xpt_done(ccb);
 1486                 return;
 1487         }
 1488                 
 1489         if (nseg != 0) {
 1490                 bt_sg_t *sg;
 1491                 bus_dma_segment_t *end_seg;
 1492                 bus_dmasync_op_t op;
 1493 
 1494                 end_seg = dm_segs + nseg;
 1495 
 1496                 /* Copy the segments into our SG list */
 1497                 sg = bccb->sg_list;
 1498                 while (dm_segs < end_seg) {
 1499                         sg->len = dm_segs->ds_len;
 1500                         sg->addr = dm_segs->ds_addr;
 1501                         sg++;
 1502                         dm_segs++;
 1503                 }
 1504 
 1505                 if (nseg > 1) {
 1506                         bccb->hccb.opcode = INITIATOR_SG_CCB_WRESID;
 1507                         bccb->hccb.data_len = sizeof(bt_sg_t) * nseg;
 1508                         bccb->hccb.data_addr = bccb->sg_list_phys;
 1509                 } else {
 1510                         bccb->hccb.data_len = bccb->sg_list->len;
 1511                         bccb->hccb.data_addr = bccb->sg_list->addr;
 1512                 }
 1513 
 1514                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 1515                         op = BUS_DMASYNC_PREREAD;
 1516                 else
 1517                         op = BUS_DMASYNC_PREWRITE;
 1518 
 1519                 bus_dmamap_sync(bt->buffer_dmat, bccb->dmamap, op);
 1520 
 1521         } else {
 1522                 bccb->hccb.opcode = INITIATOR_CCB;
 1523                 bccb->hccb.data_len = 0;
 1524                 bccb->hccb.data_addr = 0;
 1525         }
 1526 
 1527         s = splcam();
 1528 
 1529         /*
 1530          * Last time we need to check if this CCB needs to
 1531          * be aborted.
 1532          */
 1533         if (ccb->ccb_h.status != CAM_REQ_INPROG) {
 1534                 if (nseg != 0)
 1535                         bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap);
 1536                 btfreeccb(bt, bccb);
 1537                 xpt_done(ccb);
 1538                 splx(s);
 1539                 return;
 1540         }
 1541                 
 1542         bccb->flags = BCCB_ACTIVE;
 1543         ccb->ccb_h.status |= CAM_SIM_QUEUED;
 1544         LIST_INSERT_HEAD(&bt->pending_ccbs, &ccb->ccb_h, sim_links.le);
 1545 
 1546         ccb->ccb_h.timeout_ch =
 1547             timeout(bttimeout, (caddr_t)bccb,
 1548                     (ccb->ccb_h.timeout * hz) / 1000);
 1549 
 1550         /* Tell the adapter about this command */
 1551         bt->cur_outbox->ccb_addr = btccbvtop(bt, bccb);
 1552         if (bt->cur_outbox->action_code != BMBO_FREE) {
 1553                 /*
 1554                  * We should never encounter a busy mailbox.
 1555                  * If we do, warn the user, and treat it as
 1556                  * a resource shortage.  If the controller is
 1557                  * hung, one of the pending transactions will
 1558                  * timeout causing us to start recovery operations.
 1559                  */
 1560                 device_printf(bt->dev,
 1561                               "Encountered busy mailbox with %d out of %d "
 1562                               "commands active!!!\n", bt->active_ccbs,
 1563                               bt->max_ccbs);
 1564                 untimeout(bttimeout, bccb, ccb->ccb_h.timeout_ch);
 1565                 if (nseg != 0)
 1566                         bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap);
 1567                 btfreeccb(bt, bccb);
 1568                 bt->resource_shortage = TRUE;
 1569                 xpt_freeze_simq(bt->sim, /*count*/1);
 1570                 ccb->ccb_h.status = CAM_REQUEUE_REQ;
 1571                 xpt_done(ccb);
 1572                 return;
 1573         }
 1574         bt->cur_outbox->action_code = BMBO_START;       
 1575         bt_outb(bt, COMMAND_REG, BOP_START_MBOX);
 1576         btnextoutbox(bt);
 1577         splx(s);
 1578 }
 1579 
 1580 void
 1581 bt_intr(void *arg)
 1582 {
 1583         struct  bt_softc *bt;
 1584         u_int   intstat;
 1585 
 1586         bt = (struct bt_softc *)arg;
 1587         while (((intstat = bt_inb(bt, INTSTAT_REG)) & INTR_PENDING) != 0) {
 1588 
 1589                 if ((intstat & CMD_COMPLETE) != 0) {
 1590                         bt->latched_status = bt_inb(bt, STATUS_REG);
 1591                         bt->command_cmp = TRUE;
 1592                 }
 1593 
 1594                 bt_outb(bt, CONTROL_REG, RESET_INTR);
 1595 
 1596                 if ((intstat & IMB_LOADED) != 0) {
 1597                         while (bt->cur_inbox->comp_code != BMBI_FREE) {
 1598                                 btdone(bt,
 1599                                        btccbptov(bt, bt->cur_inbox->ccb_addr),
 1600                                        bt->cur_inbox->comp_code);
 1601                                 bt->cur_inbox->comp_code = BMBI_FREE;
 1602                                 btnextinbox(bt);
 1603                         }
 1604                 }
 1605 
 1606                 if ((intstat & SCSI_BUS_RESET) != 0) {
 1607                         btreset(bt, /*hardreset*/FALSE);
 1608                 }
 1609         }
 1610 }
 1611 
 1612 static void
 1613 btdone(struct bt_softc *bt, struct bt_ccb *bccb, bt_mbi_comp_code_t comp_code)
 1614 {
 1615         union  ccb        *ccb;
 1616         struct ccb_scsiio *csio;
 1617 
 1618         ccb = bccb->ccb;
 1619         csio = &bccb->ccb->csio;
 1620 
 1621         if ((bccb->flags & BCCB_ACTIVE) == 0) {
 1622                 device_printf(bt->dev,
 1623                               "btdone - Attempt to free non-active BCCB %p\n",
 1624                               (void *)bccb);
 1625                 return;
 1626         }
 1627 
 1628         if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 1629                 bus_dmasync_op_t op;
 1630 
 1631                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 1632                         op = BUS_DMASYNC_POSTREAD;
 1633                 else
 1634                         op = BUS_DMASYNC_POSTWRITE;
 1635                 bus_dmamap_sync(bt->buffer_dmat, bccb->dmamap, op);
 1636                 bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap);
 1637         }
 1638 
 1639         if (bccb == bt->recovery_bccb) {
 1640                 /*
 1641                  * The recovery BCCB does not have a CCB associated
 1642                  * with it, so short circuit the normal error handling.
 1643                  * We now traverse our list of pending CCBs and process
 1644                  * any that were terminated by the recovery CCBs action.
 1645                  * We also reinstate timeouts for all remaining, pending,
 1646                  * CCBs.
 1647                  */
 1648                 struct cam_path *path;
 1649                 struct ccb_hdr *ccb_h;
 1650                 cam_status error;
 1651 
 1652                 /* Notify all clients that a BDR occured */
 1653                 error = xpt_create_path(&path, /*periph*/NULL,
 1654                                         cam_sim_path(bt->sim),
 1655                                         bccb->hccb.target_id,
 1656                                         CAM_LUN_WILDCARD);
 1657                 
 1658                 if (error == CAM_REQ_CMP)
 1659                         xpt_async(AC_SENT_BDR, path, NULL);
 1660 
 1661                 ccb_h = LIST_FIRST(&bt->pending_ccbs);
 1662                 while (ccb_h != NULL) {
 1663                         struct bt_ccb *pending_bccb;
 1664 
 1665                         pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr;
 1666                         if (pending_bccb->hccb.target_id
 1667                          == bccb->hccb.target_id) {
 1668                                 pending_bccb->hccb.btstat = BTSTAT_HA_BDR;
 1669                                 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
 1670                                 btdone(bt, pending_bccb, BMBI_ERROR);
 1671                         } else {
 1672                                 ccb_h->timeout_ch =
 1673                                     timeout(bttimeout, (caddr_t)pending_bccb,
 1674                                             (ccb_h->timeout * hz) / 1000);
 1675                                 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
 1676                         }
 1677                 }
 1678                 device_printf(bt->dev, "No longer in timeout\n");
 1679                 return;
 1680         }
 1681 
 1682         untimeout(bttimeout, bccb, ccb->ccb_h.timeout_ch);
 1683 
 1684         switch (comp_code) {
 1685         case BMBI_FREE:
 1686                 device_printf(bt->dev,
 1687                               "btdone - CCB completed with free status!\n");
 1688                 break;
 1689         case BMBI_NOT_FOUND:
 1690                 device_printf(bt->dev,
 1691                               "btdone - CCB Abort failed to find CCB\n");
 1692                 break;
 1693         case BMBI_ABORT:
 1694         case BMBI_ERROR:
 1695                 if (bootverbose) {
 1696                         printf("bt: ccb %p - error %x occured.  "
 1697                                "btstat = %x, sdstat = %x\n",
 1698                                (void *)bccb, comp_code, bccb->hccb.btstat,
 1699                                bccb->hccb.sdstat);
 1700                 }
 1701                 /* An error occured */
 1702                 switch(bccb->hccb.btstat) {
 1703                 case BTSTAT_DATARUN_ERROR:
 1704                         if (bccb->hccb.data_len == 0) {
 1705                                 /*
 1706                                  * At least firmware 4.22, does this
 1707                                  * for a QUEUE FULL condition.
 1708                                  */
 1709                                 bccb->hccb.sdstat = SCSI_STATUS_QUEUE_FULL;
 1710                         } else if (bccb->hccb.data_len < 0) {
 1711                                 csio->ccb_h.status = CAM_DATA_RUN_ERR;
 1712                                 break;
 1713                         }
 1714                         /* FALLTHROUGH */
 1715                 case BTSTAT_NOERROR:
 1716                 case BTSTAT_LINKED_CMD_COMPLETE:
 1717                 case BTSTAT_LINKED_CMD_FLAG_COMPLETE:
 1718                 case BTSTAT_DATAUNDERUN_ERROR:
 1719 
 1720                         csio->scsi_status = bccb->hccb.sdstat;
 1721                         csio->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
 1722                         switch(csio->scsi_status) {
 1723                         case SCSI_STATUS_CHECK_COND:
 1724                         case SCSI_STATUS_CMD_TERMINATED:
 1725                                 csio->ccb_h.status |= CAM_AUTOSNS_VALID;
 1726                                 /* Bounce sense back if necessary */
 1727                                 if (bt->sense_buffers != NULL) {
 1728                                         csio->sense_data =
 1729                                             *btsensevaddr(bt, bccb);
 1730                                 }
 1731                                 break;
 1732                         default:
 1733                                 break;
 1734                         case SCSI_STATUS_OK:
 1735                                 csio->ccb_h.status = CAM_REQ_CMP;
 1736                                 break;
 1737                         }
 1738                         csio->resid = bccb->hccb.data_len;
 1739                         break;
 1740                 case BTSTAT_SELTIMEOUT:
 1741                         csio->ccb_h.status = CAM_SEL_TIMEOUT;
 1742                         break;
 1743                 case BTSTAT_UNEXPECTED_BUSFREE:
 1744                         csio->ccb_h.status = CAM_UNEXP_BUSFREE;
 1745                         break;
 1746                 case BTSTAT_INVALID_PHASE:
 1747                         csio->ccb_h.status = CAM_SEQUENCE_FAIL;
 1748                         break;
 1749                 case BTSTAT_INVALID_ACTION_CODE:
 1750                         panic("%s: Inavlid Action code", bt_name(bt));
 1751                         break;
 1752                 case BTSTAT_INVALID_OPCODE:
 1753                         panic("%s: Inavlid CCB Opcode code", bt_name(bt));
 1754                         break;
 1755                 case BTSTAT_LINKED_CCB_LUN_MISMATCH:
 1756                         /* We don't even support linked commands... */
 1757                         panic("%s: Linked CCB Lun Mismatch", bt_name(bt));
 1758                         break;
 1759                 case BTSTAT_INVALID_CCB_OR_SG_PARAM:
 1760                         panic("%s: Invalid CCB or SG list", bt_name(bt));
 1761                         break;
 1762                 case BTSTAT_AUTOSENSE_FAILED:
 1763                         csio->ccb_h.status = CAM_AUTOSENSE_FAIL;
 1764                         break;
 1765                 case BTSTAT_TAGGED_MSG_REJECTED:
 1766                 {
 1767                         struct ccb_trans_settings neg; 
 1768 #ifdef  CAM_NEW_TRAN_CODE
 1769                         struct ccb_trans_settings_scsi *scsi =
 1770                             &neg.proto_specific.scsi;
 1771 
 1772                         neg.protocol = PROTO_SCSI;
 1773                         neg.protocol_version = SCSI_REV_2;
 1774                         neg.transport = XPORT_SPI;
 1775                         neg.transport_version = 2;
 1776                         scsi->valid = CTS_SCSI_VALID_TQ;
 1777                         scsi->flags = 0;
 1778 #else
 1779 
 1780                         neg.flags = 0;
 1781                         neg.valid = CCB_TRANS_TQ_VALID;
 1782 #endif
 1783                         xpt_print_path(csio->ccb_h.path);
 1784                         printf("refuses tagged commands.  Performing "
 1785                                "non-tagged I/O\n");
 1786                         xpt_setup_ccb(&neg.ccb_h, csio->ccb_h.path,
 1787                                       /*priority*/1); 
 1788                         xpt_async(AC_TRANSFER_NEG, csio->ccb_h.path, &neg);
 1789                         bt->tags_permitted &= ~(0x01 << csio->ccb_h.target_id);
 1790                         csio->ccb_h.status = CAM_MSG_REJECT_REC;
 1791                         break;
 1792                 }
 1793                 case BTSTAT_UNSUPPORTED_MSG_RECEIVED:
 1794                         /*
 1795                          * XXX You would think that this is
 1796                          *     a recoverable error... Hmmm.
 1797                          */
 1798                         csio->ccb_h.status = CAM_REQ_CMP_ERR;
 1799                         break;
 1800                 case BTSTAT_HA_SOFTWARE_ERROR:
 1801                 case BTSTAT_HA_WATCHDOG_ERROR:
 1802                 case BTSTAT_HARDWARE_FAILURE:
 1803                         /* Hardware reset ??? Can we recover ??? */
 1804                         csio->ccb_h.status = CAM_NO_HBA;
 1805                         break;
 1806                 case BTSTAT_TARGET_IGNORED_ATN:
 1807                 case BTSTAT_OTHER_SCSI_BUS_RESET:
 1808                 case BTSTAT_HA_SCSI_BUS_RESET:
 1809                         if ((csio->ccb_h.status & CAM_STATUS_MASK)
 1810                          != CAM_CMD_TIMEOUT)
 1811                                 csio->ccb_h.status = CAM_SCSI_BUS_RESET;
 1812                         break;
 1813                 case BTSTAT_HA_BDR:
 1814                         if ((bccb->flags & BCCB_DEVICE_RESET) == 0)
 1815                                 csio->ccb_h.status = CAM_BDR_SENT;
 1816                         else
 1817                                 csio->ccb_h.status = CAM_CMD_TIMEOUT;
 1818                         break;
 1819                 case BTSTAT_INVALID_RECONNECT:
 1820                 case BTSTAT_ABORT_QUEUE_GENERATED:
 1821                         csio->ccb_h.status = CAM_REQ_TERMIO;
 1822                         break;
 1823                 case BTSTAT_SCSI_PERROR_DETECTED:
 1824                         csio->ccb_h.status = CAM_UNCOR_PARITY;
 1825                         break;
 1826                 }
 1827                 if (csio->ccb_h.status != CAM_REQ_CMP) {
 1828                         xpt_freeze_devq(csio->ccb_h.path, /*count*/1);
 1829                         csio->ccb_h.status |= CAM_DEV_QFRZN;
 1830                 }
 1831                 if ((bccb->flags & BCCB_RELEASE_SIMQ) != 0)
 1832                         ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
 1833                 btfreeccb(bt, bccb);
 1834                 xpt_done(ccb);
 1835                 break;
 1836         case BMBI_OK:
 1837                 /* All completed without incident */
 1838                 ccb->ccb_h.status |= CAM_REQ_CMP;
 1839                 if ((bccb->flags & BCCB_RELEASE_SIMQ) != 0)
 1840                         ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
 1841                 btfreeccb(bt, bccb);
 1842                 xpt_done(ccb);
 1843                 break;
 1844         }
 1845 }
 1846 
 1847 static int
 1848 btreset(struct bt_softc* bt, int hard_reset)
 1849 {
 1850         struct   ccb_hdr *ccb_h;
 1851         u_int    status;
 1852         u_int    timeout;
 1853         u_int8_t reset_type;
 1854 
 1855         if (hard_reset != 0)
 1856                 reset_type = HARD_RESET;
 1857         else
 1858                 reset_type = SOFT_RESET;
 1859         bt_outb(bt, CONTROL_REG, reset_type);
 1860 
 1861         /* Wait 5sec. for Diagnostic start */
 1862         timeout = 5 * 10000;
 1863         while (--timeout) {
 1864                 status = bt_inb(bt, STATUS_REG);
 1865                 if ((status & DIAG_ACTIVE) != 0)
 1866                         break;
 1867                 DELAY(100);
 1868         }
 1869         if (timeout == 0) {
 1870                 if (bootverbose)
 1871                         printf("%s: btreset - Diagnostic Active failed to "
 1872                                 "assert. status = 0x%x\n", bt_name(bt), status);
 1873                 return (ETIMEDOUT);
 1874         }
 1875 
 1876         /* Wait 10sec. for Diagnostic end */
 1877         timeout = 10 * 10000;
 1878         while (--timeout) {
 1879                 status = bt_inb(bt, STATUS_REG);
 1880                 if ((status & DIAG_ACTIVE) == 0)
 1881                         break;
 1882                 DELAY(100);
 1883         }
 1884         if (timeout == 0) {
 1885                 panic("%s: btreset - Diagnostic Active failed to drop. "
 1886                        "status = 0x%x\n", bt_name(bt), status);
 1887                 return (ETIMEDOUT);
 1888         }
 1889 
 1890         /* Wait for the host adapter to become ready or report a failure */
 1891         timeout = 10000;
 1892         while (--timeout) {
 1893                 status = bt_inb(bt, STATUS_REG);
 1894                 if ((status & (DIAG_FAIL|HA_READY|DATAIN_REG_READY)) != 0)
 1895                         break;
 1896                 DELAY(100);
 1897         }
 1898         if (timeout == 0) {
 1899                 printf("%s: btreset - Host adapter failed to come ready. "
 1900                        "status = 0x%x\n", bt_name(bt), status);
 1901                 return (ETIMEDOUT);
 1902         }
 1903 
 1904         /* If the diagnostics failed, tell the user */
 1905         if ((status & DIAG_FAIL) != 0
 1906          || (status & HA_READY) == 0) {
 1907                 printf("%s: btreset - Adapter failed diagnostics\n",
 1908                        bt_name(bt));
 1909 
 1910                 if ((status & DATAIN_REG_READY) != 0)
 1911                         printf("%s: btreset - Host Adapter Error code = 0x%x\n",
 1912                                bt_name(bt), bt_inb(bt, DATAIN_REG));
 1913                 return (ENXIO);
 1914         }
 1915 
 1916         /* If we've allocated mailboxes, initialize them */
 1917         if (bt->init_level > 4)
 1918                 btinitmboxes(bt);
 1919 
 1920         /* If we've attached to the XPT, tell it about the event */
 1921         if (bt->path != NULL)
 1922                 xpt_async(AC_BUS_RESET, bt->path, NULL);
 1923 
 1924         /*
 1925          * Perform completion processing for all outstanding CCBs.
 1926          */
 1927         while ((ccb_h = LIST_FIRST(&bt->pending_ccbs)) != NULL) {
 1928                 struct bt_ccb *pending_bccb;
 1929 
 1930                 pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr;
 1931                 pending_bccb->hccb.btstat = BTSTAT_HA_SCSI_BUS_RESET;
 1932                 btdone(bt, pending_bccb, BMBI_ERROR);
 1933         }
 1934 
 1935         return (0);
 1936 }
 1937 
 1938 /*
 1939  * Send a command to the adapter.
 1940  */
 1941 int
 1942 bt_cmd(struct bt_softc *bt, bt_op_t opcode, u_int8_t *params, u_int param_len,
 1943       u_int8_t *reply_data, u_int reply_len, u_int cmd_timeout)
 1944 {
 1945         u_int   timeout;
 1946         u_int   status;
 1947         u_int   saved_status;
 1948         u_int   intstat;
 1949         u_int   reply_buf_size;
 1950         int     s;
 1951         int     cmd_complete;
 1952         int     error;
 1953 
 1954         /* No data returned to start */
 1955         reply_buf_size = reply_len;
 1956         reply_len = 0;
 1957         intstat = 0;
 1958         cmd_complete = 0;
 1959         saved_status = 0;
 1960         error = 0;
 1961 
 1962         bt->command_cmp = 0;
 1963         /*
 1964          * Wait up to 10 sec. for the adapter to become
 1965          * ready to accept commands.
 1966          */
 1967         timeout = 100000;
 1968         while (--timeout) {
 1969                 status = bt_inb(bt, STATUS_REG);
 1970                 if ((status & HA_READY) != 0
 1971                  && (status & CMD_REG_BUSY) == 0)
 1972                         break;
 1973                 /*
 1974                  * Throw away any pending data which may be
 1975                  * left over from earlier commands that we
 1976                  * timedout on.
 1977                  */
 1978                 if ((status & DATAIN_REG_READY) != 0)
 1979                         (void)bt_inb(bt, DATAIN_REG);
 1980                 DELAY(100);
 1981         }
 1982         if (timeout == 0) {
 1983                 printf("%s: bt_cmd: Timeout waiting for adapter ready, "
 1984                        "status = 0x%x\n", bt_name(bt), status);
 1985                 return (ETIMEDOUT);
 1986         }
 1987 
 1988         /*
 1989          * Send the opcode followed by any necessary parameter bytes.
 1990          */
 1991         bt_outb(bt, COMMAND_REG, opcode);
 1992 
 1993         /*
 1994          * Wait for up to 1sec for each byte of the the
 1995          * parameter list sent to be sent.
 1996          */
 1997         timeout = 10000;
 1998         while (param_len && --timeout) {
 1999                 DELAY(100);
 2000                 s = splcam();
 2001                 status = bt_inb(bt, STATUS_REG);
 2002                 intstat = bt_inb(bt, INTSTAT_REG);
 2003                 splx(s);
 2004         
 2005                 if ((intstat & (INTR_PENDING|CMD_COMPLETE))
 2006                  == (INTR_PENDING|CMD_COMPLETE)) {
 2007                         saved_status = status;
 2008                         cmd_complete = 1;
 2009                         break;
 2010                 }
 2011                 if (bt->command_cmp != 0) {
 2012                         saved_status = bt->latched_status;
 2013                         cmd_complete = 1;
 2014                         break;
 2015                 }
 2016                 if ((status & DATAIN_REG_READY) != 0)
 2017                         break;
 2018                 if ((status & CMD_REG_BUSY) == 0) {
 2019                         bt_outb(bt, COMMAND_REG, *params++);
 2020                         param_len--;
 2021                         timeout = 10000;
 2022                 }
 2023         }
 2024         if (timeout == 0) {
 2025                 printf("%s: bt_cmd: Timeout sending parameters, "
 2026                        "status = 0x%x\n", bt_name(bt), status);
 2027                 cmd_complete = 1;
 2028                 saved_status = status;
 2029                 error = ETIMEDOUT;
 2030         }
 2031 
 2032         /*
 2033          * Wait for the command to complete.
 2034          */
 2035         while (cmd_complete == 0 && --cmd_timeout) {
 2036 
 2037                 s = splcam();
 2038                 status = bt_inb(bt, STATUS_REG);
 2039                 intstat = bt_inb(bt, INTSTAT_REG);
 2040                 /*
 2041                  * It may be that this command was issued with
 2042                  * controller interrupts disabled.  We'll never
 2043                  * get to our command if an incoming mailbox
 2044                  * interrupt is pending, so take care of completed
 2045                  * mailbox commands by calling our interrupt handler.
 2046                  */
 2047                 if ((intstat & (INTR_PENDING|IMB_LOADED))
 2048                  == (INTR_PENDING|IMB_LOADED))
 2049                         bt_intr(bt);
 2050                 splx(s);
 2051 
 2052                 if (bt->command_cmp != 0) {
 2053                         /*
 2054                          * Our interrupt handler saw CMD_COMPLETE
 2055                          * status before we did.
 2056                          */
 2057                         cmd_complete = 1;
 2058                         saved_status = bt->latched_status;
 2059                 } else if ((intstat & (INTR_PENDING|CMD_COMPLETE))
 2060                         == (INTR_PENDING|CMD_COMPLETE)) {
 2061                         /*
 2062                          * Our poll (in case interrupts are blocked)
 2063                          * saw the CMD_COMPLETE interrupt.
 2064                          */
 2065                         cmd_complete = 1;
 2066                         saved_status = status;
 2067                 } else if (opcode == BOP_MODIFY_IO_ADDR
 2068                         && (status & CMD_REG_BUSY) == 0) {
 2069                         /*
 2070                          * The BOP_MODIFY_IO_ADDR does not issue a CMD_COMPLETE,
 2071                          * but it should update the status register.  So, we
 2072                          * consider this command complete when the CMD_REG_BUSY
 2073                          * status clears.
 2074                          */
 2075                         saved_status = status;
 2076                         cmd_complete = 1;
 2077                 } else if ((status & DATAIN_REG_READY) != 0) {
 2078                         u_int8_t data;
 2079 
 2080                         data = bt_inb(bt, DATAIN_REG);
 2081                         if (reply_len < reply_buf_size) {
 2082                                 *reply_data++ = data;
 2083                         } else {
 2084                                 printf("%s: bt_cmd - Discarded reply data byte "
 2085                                        "for opcode 0x%x\n", bt_name(bt),
 2086                                        opcode);
 2087                         }
 2088                         /*
 2089                          * Reset timeout to ensure at least a second
 2090                          * between response bytes.
 2091                          */
 2092                         cmd_timeout = MAX(cmd_timeout, 10000);
 2093                         reply_len++;
 2094 
 2095                 } else if ((opcode == BOP_FETCH_LRAM)
 2096                         && (status & HA_READY) != 0) {
 2097                                 saved_status = status;
 2098                                 cmd_complete = 1;
 2099                 }
 2100                 DELAY(100);
 2101         }
 2102         if (cmd_timeout == 0) {
 2103                 printf("%s: bt_cmd: Timeout waiting for command (%x) "
 2104                        "to complete.\n%s: status = 0x%x, intstat = 0x%x, "
 2105                        "rlen %d\n", bt_name(bt), opcode,
 2106                        bt_name(bt), status, intstat, reply_len);
 2107                 error = (ETIMEDOUT);
 2108         }
 2109 
 2110         /*
 2111          * Clear any pending interrupts.  Block interrupts so our
 2112          * interrupt handler is not re-entered.
 2113          */
 2114         s = splcam();
 2115         bt_intr(bt);
 2116         splx(s);
 2117         
 2118         if (error != 0)
 2119                 return (error);
 2120 
 2121         /*
 2122          * If the command was rejected by the controller, tell the caller.
 2123          */
 2124         if ((saved_status & CMD_INVALID) != 0) {
 2125                 /*
 2126                  * Some early adapters may not recover properly from
 2127                  * an invalid command.  If it appears that the controller
 2128                  * has wedged (i.e. status was not cleared by our interrupt
 2129                  * reset above), perform a soft reset.
 2130                  */
 2131                 if (bootverbose)
 2132                         printf("%s: Invalid Command 0x%x\n", bt_name(bt), 
 2133                                 opcode);
 2134                 DELAY(1000);
 2135                 status = bt_inb(bt, STATUS_REG);
 2136                 if ((status & (CMD_INVALID|STATUS_REG_RSVD|DATAIN_REG_READY|
 2137                               CMD_REG_BUSY|DIAG_FAIL|DIAG_ACTIVE)) != 0
 2138                  || (status & (HA_READY|INIT_REQUIRED))
 2139                   != (HA_READY|INIT_REQUIRED)) {
 2140                         btreset(bt, /*hard_reset*/FALSE);
 2141                 }
 2142                 return (EINVAL);
 2143         }
 2144 
 2145         if (param_len > 0) {
 2146                 /* The controller did not accept the full argument list */
 2147                 return (E2BIG);
 2148         }
 2149 
 2150         if (reply_len != reply_buf_size) {
 2151                 /* Too much or too little data received */
 2152                 return (EMSGSIZE);
 2153         }
 2154 
 2155         /* We were successful */
 2156         return (0);
 2157 }
 2158 
 2159 static int
 2160 btinitmboxes(struct bt_softc *bt) {
 2161         init_32b_mbox_params_t init_mbox;
 2162         int error;
 2163 
 2164         bzero(bt->in_boxes, sizeof(bt_mbox_in_t) * bt->num_boxes);
 2165         bzero(bt->out_boxes, sizeof(bt_mbox_out_t) * bt->num_boxes);
 2166         bt->cur_inbox = bt->in_boxes;
 2167         bt->last_inbox = bt->in_boxes + bt->num_boxes - 1;
 2168         bt->cur_outbox = bt->out_boxes;
 2169         bt->last_outbox = bt->out_boxes + bt->num_boxes - 1;
 2170 
 2171         /* Tell the adapter about them */
 2172         init_mbox.num_boxes = bt->num_boxes;
 2173         init_mbox.base_addr[0] = bt->mailbox_physbase & 0xFF;
 2174         init_mbox.base_addr[1] = (bt->mailbox_physbase >> 8) & 0xFF;
 2175         init_mbox.base_addr[2] = (bt->mailbox_physbase >> 16) & 0xFF;
 2176         init_mbox.base_addr[3] = (bt->mailbox_physbase >> 24) & 0xFF;
 2177         error = bt_cmd(bt, BOP_INITIALIZE_32BMBOX, (u_int8_t *)&init_mbox,
 2178                        /*parmlen*/sizeof(init_mbox), /*reply_buf*/NULL,
 2179                        /*reply_len*/0, DEFAULT_CMD_TIMEOUT);
 2180 
 2181         if (error != 0)
 2182                 printf("btinitmboxes: Initialization command failed\n");
 2183         else if (bt->strict_rr != 0) {
 2184                 /*
 2185                  * If the controller supports
 2186                  * strict round robin mode,
 2187                  * enable it
 2188                  */
 2189                 u_int8_t param;
 2190 
 2191                 param = 0;
 2192                 error = bt_cmd(bt, BOP_ENABLE_STRICT_RR, &param, 1,
 2193                                /*reply_buf*/NULL, /*reply_len*/0,
 2194                                DEFAULT_CMD_TIMEOUT);
 2195 
 2196                 if (error != 0) {
 2197                         printf("btinitmboxes: Unable to enable strict RR\n");
 2198                         error = 0;
 2199                 } else if (bootverbose) {
 2200                         printf("%s: Using Strict Round Robin Mailbox Mode\n",
 2201                                bt_name(bt));
 2202                 }
 2203         }
 2204         
 2205         return (error);
 2206 }
 2207 
 2208 /*
 2209  * Update the XPT's idea of the negotiated transfer
 2210  * parameters for a particular target.
 2211  */
 2212 static void
 2213 btfetchtransinfo(struct bt_softc *bt, struct ccb_trans_settings *cts)
 2214 {
 2215         setup_data_t    setup_info;
 2216         u_int           target;
 2217         u_int           targ_offset;
 2218         u_int           targ_mask;
 2219         u_int           sync_period;
 2220         u_int           sync_offset;
 2221         u_int           bus_width;
 2222         int             error;
 2223         u_int8_t        param;
 2224         targ_syncinfo_t sync_info;
 2225 #ifdef  CAM_NEW_TRAN_CODE
 2226         struct ccb_trans_settings_scsi *scsi =
 2227             &cts->proto_specific.scsi;
 2228         struct ccb_trans_settings_spi *spi =
 2229             &cts->xport_specific.spi;
 2230 
 2231         spi->valid = 0;
 2232         scsi->valid = 0;
 2233 #else
 2234 
 2235         cts->valid = 0;
 2236 #endif
 2237 
 2238         target = cts->ccb_h.target_id;
 2239         targ_offset = (target & 0x7);
 2240         targ_mask = (0x01 << targ_offset);
 2241 
 2242         /*
 2243          * Inquire Setup Information.  This command retreives the
 2244          * Wide negotiation status for recent adapters as well as
 2245          * the sync info for older models.
 2246          */
 2247         param = sizeof(setup_info);
 2248         error = bt_cmd(bt, BOP_INQUIRE_SETUP_INFO, &param, /*paramlen*/1,
 2249                        (u_int8_t*)&setup_info, sizeof(setup_info),
 2250                        DEFAULT_CMD_TIMEOUT);
 2251 
 2252         if (error != 0) {
 2253                 printf("%s: btfetchtransinfo - Inquire Setup Info Failed %x\n",
 2254                        bt_name(bt), error);
 2255                 return;
 2256         }
 2257 
 2258         sync_info = (target < 8) ? setup_info.low_syncinfo[targ_offset]
 2259                                  : setup_info.high_syncinfo[targ_offset];
 2260 
 2261         if (sync_info.sync == 0)
 2262                 sync_offset = 0;
 2263         else
 2264                 sync_offset = sync_info.offset;
 2265 
 2266 
 2267         bus_width = MSG_EXT_WDTR_BUS_8_BIT;
 2268         if (strcmp(bt->firmware_ver, "5.06L") >= 0) {
 2269                 u_int wide_active;
 2270 
 2271                 wide_active =
 2272                     (target < 8) ? (setup_info.low_wide_active & targ_mask)
 2273                                  : (setup_info.high_wide_active & targ_mask);
 2274 
 2275                 if (wide_active)
 2276                         bus_width = MSG_EXT_WDTR_BUS_16_BIT;
 2277         } else if ((bt->wide_permitted & targ_mask) != 0) {
 2278                 struct ccb_getdev cgd;
 2279 
 2280                 /*
 2281                  * Prior to rev 5.06L, wide status isn't provided,
 2282                  * so we "guess" that wide transfers are in effect
 2283                  * if the user settings allow for wide and the inquiry
 2284                  * data for the device indicates that it can handle
 2285                  * wide transfers.
 2286                  */
 2287                 xpt_setup_ccb(&cgd.ccb_h, cts->ccb_h.path, /*priority*/1);
 2288                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 2289                 xpt_action((union ccb *)&cgd);
 2290                 if ((cgd.ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP
 2291                  && (cgd.inq_data.flags & SID_WBus16) != 0)
 2292                         bus_width = MSG_EXT_WDTR_BUS_16_BIT;
 2293         }
 2294 
 2295         if (bt->firmware_ver[0] >= '3') {
 2296                 /*
 2297                  * For adapters that can do fast or ultra speeds,
 2298                  * use the more exact Target Sync Information command.
 2299                  */
 2300                 target_sync_info_data_t sync_info;
 2301 
 2302                 param = sizeof(sync_info);
 2303                 error = bt_cmd(bt, BOP_TARG_SYNC_INFO, &param, /*paramlen*/1,
 2304                                (u_int8_t*)&sync_info, sizeof(sync_info),
 2305                                DEFAULT_CMD_TIMEOUT);
 2306                 
 2307                 if (error != 0) {
 2308                         printf("%s: btfetchtransinfo - Inquire Sync "
 2309                                "Info Failed 0x%x\n", bt_name(bt), error);
 2310                         return;
 2311                 }
 2312                 sync_period = sync_info.sync_rate[target] * 100;
 2313         } else {
 2314                 sync_period = 2000 + (500 * sync_info.period);
 2315         }
 2316 
 2317 #ifdef  CAM_NEW_TRAN_CODE
 2318         cts->protocol = PROTO_SCSI;
 2319         cts->protocol_version = SCSI_REV_2;
 2320         cts->transport = XPORT_SPI;
 2321         cts->transport_version = 2;
 2322 
 2323         spi->sync_period = sync_period;
 2324         spi->valid |= CTS_SPI_VALID_SYNC_RATE;
 2325         spi->sync_offset = sync_offset;
 2326         spi->valid |= CTS_SPI_VALID_SYNC_OFFSET;
 2327 
 2328         spi->valid |= CTS_SPI_VALID_BUS_WIDTH;
 2329         spi->bus_width = bus_width;
 2330 
 2331         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
 2332                 scsi->valid = CTS_SCSI_VALID_TQ;
 2333                 spi->valid |= CTS_SPI_VALID_DISC;
 2334         } else
 2335                 scsi->valid = 0;
 2336         
 2337 #else
 2338         /* Convert ns value to standard SCSI sync rate */
 2339         if (cts->sync_offset != 0)
 2340                 cts->sync_period = scsi_calc_syncparam(sync_period);
 2341         else
 2342                 cts->sync_period = 0;
 2343         cts->sync_offset = sync_offset;
 2344         cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
 2345         
 2346         cts->valid = CCB_TRANS_SYNC_RATE_VALID
 2347                    | CCB_TRANS_SYNC_OFFSET_VALID
 2348                    | CCB_TRANS_BUS_WIDTH_VALID;
 2349 
 2350 #endif
 2351         xpt_async(AC_TRANSFER_NEG, cts->ccb_h.path, cts);
 2352 }
 2353 
 2354 static void
 2355 btmapmboxes(void *arg, bus_dma_segment_t *segs, int nseg, int error)
 2356 {
 2357         struct bt_softc* bt;
 2358 
 2359         bt = (struct bt_softc*)arg;
 2360         bt->mailbox_physbase = segs->ds_addr;
 2361 }
 2362 
 2363 static void
 2364 btmapccbs(void *arg, bus_dma_segment_t *segs, int nseg, int error)
 2365 {
 2366         struct bt_softc* bt;
 2367 
 2368         bt = (struct bt_softc*)arg;
 2369         bt->bt_ccb_physbase = segs->ds_addr;
 2370 }
 2371 
 2372 static void
 2373 btmapsgs(void *arg, bus_dma_segment_t *segs, int nseg, int error)
 2374 {
 2375 
 2376         struct bt_softc* bt;
 2377 
 2378         bt = (struct bt_softc*)arg;
 2379         SLIST_FIRST(&bt->sg_maps)->sg_physaddr = segs->ds_addr;
 2380 }
 2381 
 2382 static void
 2383 btpoll(struct cam_sim *sim)
 2384 {
 2385         bt_intr(cam_sim_softc(sim));
 2386 }
 2387 
 2388 void
 2389 bttimeout(void *arg)
 2390 {
 2391         struct bt_ccb   *bccb;
 2392         union  ccb      *ccb;
 2393         struct bt_softc *bt;
 2394         int              s;
 2395 
 2396         bccb = (struct bt_ccb *)arg;
 2397         ccb = bccb->ccb;
 2398         bt = (struct bt_softc *)ccb->ccb_h.ccb_bt_ptr;
 2399         xpt_print_path(ccb->ccb_h.path);
 2400         printf("CCB %p - timed out\n", (void *)bccb);
 2401 
 2402         s = splcam();
 2403 
 2404         if ((bccb->flags & BCCB_ACTIVE) == 0) {
 2405                 xpt_print_path(ccb->ccb_h.path);
 2406                 printf("CCB %p - timed out CCB already completed\n",
 2407                        (void *)bccb);
 2408                 splx(s);
 2409                 return;
 2410         }
 2411 
 2412         /*
 2413          * In order to simplify the recovery process, we ask the XPT
 2414          * layer to halt the queue of new transactions and we traverse
 2415          * the list of pending CCBs and remove their timeouts. This
 2416          * means that the driver attempts to clear only one error
 2417          * condition at a time.  In general, timeouts that occur
 2418          * close together are related anyway, so there is no benefit
 2419          * in attempting to handle errors in parrallel.  Timeouts will
 2420          * be reinstated when the recovery process ends.
 2421          */
 2422         if ((bccb->flags & BCCB_DEVICE_RESET) == 0) {
 2423                 struct ccb_hdr *ccb_h;
 2424 
 2425                 if ((bccb->flags & BCCB_RELEASE_SIMQ) == 0) {
 2426                         xpt_freeze_simq(bt->sim, /*count*/1);
 2427                         bccb->flags |= BCCB_RELEASE_SIMQ;
 2428                 }
 2429 
 2430                 ccb_h = LIST_FIRST(&bt->pending_ccbs);
 2431                 while (ccb_h != NULL) {
 2432                         struct bt_ccb *pending_bccb;
 2433 
 2434                         pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr;
 2435                         untimeout(bttimeout, pending_bccb, ccb_h->timeout_ch);
 2436                         ccb_h = LIST_NEXT(ccb_h, sim_links.le);
 2437                 }
 2438         }
 2439 
 2440         if ((bccb->flags & BCCB_DEVICE_RESET) != 0
 2441          || bt->cur_outbox->action_code != BMBO_FREE
 2442          || ((bccb->hccb.tag_enable == TRUE)
 2443           && (bt->firmware_ver[0] < '5'))) {
 2444                 /*
 2445                  * Try a full host adapter/SCSI bus reset.
 2446                  * We do this only if we have already attempted
 2447                  * to clear the condition with a BDR, or we cannot
 2448                  * attempt a BDR for lack of mailbox resources
 2449                  * or because of faulty firmware.  It turns out
 2450                  * that firmware versions prior to 5.xx treat BDRs
 2451                  * as untagged commands that cannot be sent until
 2452                  * all outstanding tagged commands have been processed.
 2453                  * This makes it somewhat difficult to use a BDR to
 2454                  * clear up a problem with an uncompleted tagged command.
 2455                  */
 2456                 ccb->ccb_h.status = CAM_CMD_TIMEOUT;
 2457                 btreset(bt, /*hardreset*/TRUE);
 2458                 printf("%s: No longer in timeout\n", bt_name(bt));
 2459         } else {
 2460                 /*    
 2461                  * Send a Bus Device Reset message:
 2462                  * The target that is holding up the bus may not
 2463                  * be the same as the one that triggered this timeout
 2464                  * (different commands have different timeout lengths),
 2465                  * but we have no way of determining this from our
 2466                  * timeout handler.  Our strategy here is to queue a
 2467                  * BDR message to the target of the timed out command.
 2468                  * If this fails, we'll get another timeout 2 seconds
 2469                  * later which will attempt a bus reset.
 2470                  */
 2471                 bccb->flags |= BCCB_DEVICE_RESET;
 2472                 ccb->ccb_h.timeout_ch =
 2473                     timeout(bttimeout, (caddr_t)bccb, 2 * hz);
 2474 
 2475                 bt->recovery_bccb->hccb.opcode = INITIATOR_BUS_DEV_RESET;
 2476 
 2477                 /* No Data Transfer */
 2478                 bt->recovery_bccb->hccb.datain = TRUE;
 2479                 bt->recovery_bccb->hccb.dataout = TRUE;
 2480                 bt->recovery_bccb->hccb.btstat = 0;
 2481                 bt->recovery_bccb->hccb.sdstat = 0;
 2482                 bt->recovery_bccb->hccb.target_id = ccb->ccb_h.target_id;
 2483 
 2484                 /* Tell the adapter about this command */
 2485                 bt->cur_outbox->ccb_addr = btccbvtop(bt, bt->recovery_bccb);
 2486                 bt->cur_outbox->action_code = BMBO_START;
 2487                 bt_outb(bt, COMMAND_REG, BOP_START_MBOX);
 2488                 btnextoutbox(bt);
 2489         }
 2490 
 2491         splx(s);
 2492 }
 2493 

Cache object: 4ea468f426bed275209748e13bed599d


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