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  * $FreeBSD: releng/5.1/sys/dev/buslogic/bt.c 115343 2003-05-27 04:59:59Z scottl $
   34  */
   35 
   36  /*
   37   * Special thanks to Leonard N. Zubkoff for writing such a complete and
   38   * well documented Mylex/BusLogic MultiMaster driver for Linux.  Support
   39   * in this driver for the wide range of MultiMaster controllers and
   40   * firmware revisions, with their otherwise undocumented quirks, would not
   41   * have been possible without his efforts.
   42   */
   43 
   44 #include <sys/param.h>
   45 #include <sys/systm.h> 
   46 #include <sys/malloc.h>
   47 #include <sys/kernel.h>
   48 #include <sys/sysctl.h>
   49 #include <sys/bus.h>
   50  
   51 /*
   52  * XXX It appears that BusLogic PCI adapters go out to lunch if you 
   53  *     attempt to perform memory mapped I/O.
   54  */
   55 #if 0
   56 #include <machine/bus_memio.h>
   57 #endif
   58 #include <machine/bus_pio.h>
   59 #include <machine/bus.h>
   60 #include <sys/rman.h>
   61 
   62 #include <cam/cam.h>
   63 #include <cam/cam_ccb.h>
   64 #include <cam/cam_sim.h>
   65 #include <cam/cam_xpt_sim.h>
   66 #include <cam/cam_debug.h>
   67 
   68 #include <cam/scsi/scsi_message.h>
   69 
   70 #include <vm/vm.h>
   71 #include <vm/pmap.h>
   72  
   73 #include <dev/buslogic/btreg.h>
   74 
   75 /* MailBox Management functions */
   76 static __inline void    btnextinbox(struct bt_softc *bt);
   77 static __inline void    btnextoutbox(struct bt_softc *bt);
   78 
   79 static __inline void
   80 btnextinbox(struct bt_softc *bt)
   81 {
   82         if (bt->cur_inbox == bt->last_inbox)
   83                 bt->cur_inbox = bt->in_boxes;
   84         else
   85                 bt->cur_inbox++;
   86 }
   87 
   88 static __inline void
   89 btnextoutbox(struct bt_softc *bt)
   90 {
   91         if (bt->cur_outbox == bt->last_outbox)
   92                 bt->cur_outbox = bt->out_boxes;
   93         else
   94                 bt->cur_outbox++;
   95 }
   96 
   97 /* CCB Mangement functions */
   98 static __inline u_int32_t               btccbvtop(struct bt_softc *bt,
   99                                                   struct bt_ccb *bccb);
  100 static __inline struct bt_ccb*          btccbptov(struct bt_softc *bt,
  101                                                   u_int32_t ccb_addr);
  102 static __inline u_int32_t               btsensepaddr(struct bt_softc *bt,
  103                                                      struct bt_ccb *bccb);
  104 static __inline struct scsi_sense_data* btsensevaddr(struct bt_softc *bt,
  105                                                      struct bt_ccb *bccb);
  106 
  107 static __inline u_int32_t
  108 btccbvtop(struct bt_softc *bt, struct bt_ccb *bccb)
  109 {
  110         return (bt->bt_ccb_physbase
  111               + (u_int32_t)((caddr_t)bccb - (caddr_t)bt->bt_ccb_array));
  112 }
  113 
  114 static __inline struct bt_ccb *
  115 btccbptov(struct bt_softc *bt, u_int32_t ccb_addr)
  116 {
  117         return (bt->bt_ccb_array +
  118                 ((struct bt_ccb*)(uintptr_t)ccb_addr - (struct bt_ccb*)(uintptr_t)bt->bt_ccb_physbase));
  119 }
  120 
  121 static __inline u_int32_t
  122 btsensepaddr(struct bt_softc *bt, struct bt_ccb *bccb)
  123 {
  124         u_int index;
  125 
  126         index = (u_int)(bccb - bt->bt_ccb_array);
  127         return (bt->sense_buffers_physbase
  128                 + (index * sizeof(struct scsi_sense_data)));
  129 }
  130 
  131 static __inline struct scsi_sense_data *
  132 btsensevaddr(struct bt_softc *bt, struct bt_ccb *bccb)
  133 {
  134         u_int index;
  135 
  136         index = (u_int)(bccb - bt->bt_ccb_array);
  137         return (bt->sense_buffers + index);
  138 }
  139 
  140 static __inline struct bt_ccb*  btgetccb(struct bt_softc *bt);
  141 static __inline void            btfreeccb(struct bt_softc *bt,
  142                                           struct bt_ccb *bccb);
  143 static void             btallocccbs(struct bt_softc *bt);
  144 static bus_dmamap_callback_t btexecuteccb;
  145 static void             btdone(struct bt_softc *bt, struct bt_ccb *bccb,
  146                                bt_mbi_comp_code_t comp_code);
  147 
  148 /* Host adapter command functions */
  149 static int      btreset(struct bt_softc* bt, int hard_reset);
  150 
  151 /* Initialization functions */
  152 static int                      btinitmboxes(struct bt_softc *bt);
  153 static bus_dmamap_callback_t    btmapmboxes;
  154 static bus_dmamap_callback_t    btmapccbs;
  155 static bus_dmamap_callback_t    btmapsgs;
  156 
  157 /* Transfer Negotiation Functions */
  158 static void btfetchtransinfo(struct bt_softc *bt,
  159                              struct ccb_trans_settings *cts);
  160 
  161 /* CAM SIM entry points */
  162 #define ccb_bccb_ptr spriv_ptr0
  163 #define ccb_bt_ptr spriv_ptr1
  164 static void     btaction(struct cam_sim *sim, union ccb *ccb);
  165 static void     btpoll(struct cam_sim *sim);
  166 
  167 /* Our timeout handler */
  168 timeout_t bttimeout;
  169 
  170 u_long bt_unit = 0;
  171 
  172 /*
  173  * XXX
  174  * Do our own re-probe protection until a configuration
  175  * manager can do it for us.  This ensures that we don't
  176  * reprobe a card already found by the EISA or PCI probes.
  177  */
  178 struct bt_isa_port bt_isa_ports[] =
  179 {
  180         { 0x130, 0, 4 },
  181         { 0x134, 0, 5 },
  182         { 0x230, 0, 2 },
  183         { 0x234, 0, 3 },
  184         { 0x330, 0, 0 },
  185         { 0x334, 0, 1 }
  186 };
  187 
  188 /*
  189  * I/O ports listed in the order enumerated by the
  190  * card for certain op codes.
  191  */
  192 u_int16_t bt_board_ports[] =
  193 {
  194         0x330,
  195         0x334,
  196         0x230,
  197         0x234,
  198         0x130,
  199         0x134
  200 };
  201 
  202 /* Exported functions */
  203 void
  204 bt_init_softc(device_t dev, struct resource *port,
  205               struct resource *irq, struct resource *drq)
  206 {
  207         struct bt_softc *bt = device_get_softc(dev);
  208 
  209         SLIST_INIT(&bt->free_bt_ccbs);
  210         LIST_INIT(&bt->pending_ccbs);
  211         SLIST_INIT(&bt->sg_maps);
  212         bt->dev = dev;
  213         bt->unit = device_get_unit(dev);
  214         bt->port = port;
  215         bt->irq = irq;
  216         bt->drq = drq;
  217         bt->tag = rman_get_bustag(port);
  218         bt->bsh = rman_get_bushandle(port);
  219 }
  220 
  221 void
  222 bt_free_softc(device_t dev)
  223 {
  224         struct bt_softc *bt = device_get_softc(dev);
  225 
  226         switch (bt->init_level) {
  227         default:
  228         case 11:
  229                 bus_dmamap_unload(bt->sense_dmat, bt->sense_dmamap);
  230         case 10:
  231                 bus_dmamem_free(bt->sense_dmat, bt->sense_buffers,
  232                                 bt->sense_dmamap);
  233         case 9:
  234                 bus_dma_tag_destroy(bt->sense_dmat);
  235         case 8:
  236         {
  237                 struct sg_map_node *sg_map;
  238 
  239                 while ((sg_map = SLIST_FIRST(&bt->sg_maps))!= NULL) {
  240                         SLIST_REMOVE_HEAD(&bt->sg_maps, links);
  241                         bus_dmamap_unload(bt->sg_dmat,
  242                                           sg_map->sg_dmamap);
  243                         bus_dmamem_free(bt->sg_dmat, sg_map->sg_vaddr,
  244                                         sg_map->sg_dmamap);
  245                         free(sg_map, M_DEVBUF);
  246                 }
  247                 bus_dma_tag_destroy(bt->sg_dmat);
  248         }
  249         case 7:
  250                 bus_dmamap_unload(bt->ccb_dmat, bt->ccb_dmamap);
  251         case 6:
  252                 bus_dmamem_free(bt->ccb_dmat, bt->bt_ccb_array,
  253                                 bt->ccb_dmamap);
  254                 bus_dmamap_destroy(bt->ccb_dmat, bt->ccb_dmamap);
  255         case 5:
  256                 bus_dma_tag_destroy(bt->ccb_dmat);
  257         case 4:
  258                 bus_dmamap_unload(bt->mailbox_dmat, bt->mailbox_dmamap);
  259         case 3:
  260                 bus_dmamem_free(bt->mailbox_dmat, bt->in_boxes,
  261                                 bt->mailbox_dmamap);
  262                 bus_dmamap_destroy(bt->mailbox_dmat, bt->mailbox_dmamap);
  263         case 2:
  264                 bus_dma_tag_destroy(bt->buffer_dmat);
  265         case 1:
  266                 bus_dma_tag_destroy(bt->mailbox_dmat);
  267         case 0:
  268                 break;
  269         }
  270 }
  271 
  272 int
  273 bt_port_probe(device_t dev, struct bt_probe_info *info)
  274 {
  275         struct bt_softc *bt = device_get_softc(dev);
  276         config_data_t config_data;
  277         int error;
  278 
  279         /* See if there is really a card present */
  280         if (bt_probe(dev) || bt_fetch_adapter_info(dev))
  281                 return(1);
  282 
  283         /*
  284          * Determine our IRQ, and DMA settings and
  285          * export them to the configuration system.
  286          */
  287         error = bt_cmd(bt, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
  288                        (u_int8_t*)&config_data, sizeof(config_data),
  289                        DEFAULT_CMD_TIMEOUT);
  290         if (error != 0) {
  291                 printf("bt_port_probe: Could not determine IRQ or DMA "
  292                        "settings for adapter.\n");
  293                 return (1);
  294         }
  295 
  296         if (bt->model[0] == '5') {
  297                 /* DMA settings only make sense for ISA cards */
  298                 switch (config_data.dma_chan) {
  299                 case DMA_CHAN_5:
  300                         info->drq = 5;
  301                         break;
  302                 case DMA_CHAN_6:
  303                         info->drq = 6;
  304                         break;
  305                 case DMA_CHAN_7:
  306                         info->drq = 7;
  307                         break;
  308                 default:
  309                         printf("bt_port_probe: Invalid DMA setting "
  310                                "detected for adapter.\n");
  311                         return (1);
  312                 }
  313         } else {
  314                 /* VL/EISA/PCI DMA */
  315                 info->drq = -1;
  316         }
  317         switch (config_data.irq) {
  318         case IRQ_9:
  319         case IRQ_10:
  320         case IRQ_11:
  321         case IRQ_12:
  322         case IRQ_14:
  323         case IRQ_15:
  324                 info->irq = ffs(config_data.irq) + 8;
  325                 break;
  326         default:
  327                 printf("bt_port_probe: Invalid IRQ setting %x"
  328                        "detected for adapter.\n", config_data.irq);
  329                 return (1);
  330         }
  331         return (0);
  332 }
  333 
  334 /*
  335  * Probe the adapter and verify that the card is a BusLogic.
  336  */
  337 int
  338 bt_probe(device_t dev)
  339 {
  340         struct bt_softc *bt = device_get_softc(dev);
  341         esetup_info_data_t esetup_info;
  342         u_int    status;
  343         u_int    intstat;
  344         u_int    geometry;
  345         int      error;
  346         u_int8_t param;
  347 
  348         /*
  349          * See if the three I/O ports look reasonable.
  350          * Touch the minimal number of registers in the
  351          * failure case.
  352          */
  353         status = bt_inb(bt, STATUS_REG);
  354         if ((status == 0)
  355          || (status & (DIAG_ACTIVE|CMD_REG_BUSY|
  356                        STATUS_REG_RSVD|CMD_INVALID)) != 0) {
  357                 if (bootverbose)
  358                         device_printf(dev, "Failed Status Reg Test - %x\n",
  359                                status);
  360                 return (ENXIO);
  361         }
  362 
  363         intstat = bt_inb(bt, INTSTAT_REG);
  364         if ((intstat & INTSTAT_REG_RSVD) != 0) {
  365                 device_printf(dev, "Failed Intstat Reg Test\n");
  366                 return (ENXIO);
  367         }
  368 
  369         geometry = bt_inb(bt, GEOMETRY_REG);
  370         if (geometry == 0xFF) {
  371                 if (bootverbose)
  372                         device_printf(dev, "Failed Geometry Reg Test\n");
  373                 return (ENXIO);
  374         }
  375 
  376         /*
  377          * Looking good so far.  Final test is to reset the
  378          * adapter and attempt to fetch the extended setup
  379          * information.  This should filter out all 1542 cards.
  380          */
  381         if ((error = btreset(bt, /*hard_reset*/TRUE)) != 0) {
  382                 if (bootverbose)
  383                         device_printf(dev, "Failed Reset\n");
  384                 return (ENXIO);
  385         }
  386         
  387         param = sizeof(esetup_info);
  388         error = bt_cmd(bt, BOP_INQUIRE_ESETUP_INFO, &param, /*parmlen*/1,
  389                        (u_int8_t*)&esetup_info, sizeof(esetup_info),
  390                        DEFAULT_CMD_TIMEOUT);
  391         if (error != 0) {
  392                 return (ENXIO);
  393         }
  394 
  395         return (0);
  396 }
  397 
  398 /*
  399  * Pull the boards setup information and record it in our softc.
  400  */
  401 int
  402 bt_fetch_adapter_info(device_t dev)
  403 {
  404         struct bt_softc *bt = device_get_softc(dev);
  405         board_id_data_t board_id;
  406         esetup_info_data_t esetup_info;
  407         config_data_t config_data;
  408         int      error;
  409         u_int8_t length_param;
  410 
  411         /* First record the firmware version */
  412         error = bt_cmd(bt, BOP_INQUIRE_BOARD_ID, NULL, /*parmlen*/0,
  413                        (u_int8_t*)&board_id, sizeof(board_id),
  414                        DEFAULT_CMD_TIMEOUT);
  415         if (error != 0) {
  416                 device_printf(dev, "bt_fetch_adapter_info - Failed Get Board Info\n");
  417                 return (error);
  418         }
  419         bt->firmware_ver[0] = board_id.firmware_rev_major;
  420         bt->firmware_ver[1] = '.';
  421         bt->firmware_ver[2] = board_id.firmware_rev_minor;
  422         bt->firmware_ver[3] = '\0';
  423                 
  424         /*
  425          * Depending on the firmware major and minor version,
  426          * we may be able to fetch additional minor version info.
  427          */
  428         if (bt->firmware_ver[0] > '') {
  429                 
  430                 error = bt_cmd(bt, BOP_INQUIRE_FW_VER_3DIG, NULL, /*parmlen*/0,
  431                                (u_int8_t*)&bt->firmware_ver[3], 1,
  432                                DEFAULT_CMD_TIMEOUT);
  433                 if (error != 0) {
  434                         device_printf(dev,
  435                                       "bt_fetch_adapter_info - Failed Get "
  436                                       "Firmware 3rd Digit\n");
  437                         return (error);
  438                 }
  439                 if (bt->firmware_ver[3] == ' ')
  440                         bt->firmware_ver[3] = '\0';
  441                 bt->firmware_ver[4] = '\0';
  442         }
  443 
  444         if (strcmp(bt->firmware_ver, "3.3") >= 0) {
  445 
  446                 error = bt_cmd(bt, BOP_INQUIRE_FW_VER_4DIG, NULL, /*parmlen*/0,
  447                                (u_int8_t*)&bt->firmware_ver[4], 1,
  448                                DEFAULT_CMD_TIMEOUT);
  449                 if (error != 0) {
  450                         device_printf(dev,
  451                                       "bt_fetch_adapter_info - Failed Get "
  452                                       "Firmware 4th Digit\n");
  453                         return (error);
  454                 }
  455                 if (bt->firmware_ver[4] == ' ')
  456                         bt->firmware_ver[4] = '\0';
  457                 bt->firmware_ver[5] = '\0';
  458         }
  459 
  460         /*
  461          * Some boards do not handle the "recently documented"
  462          * Inquire Board Model Number command correctly or do not give
  463          * exact information.  Use the Firmware and Extended Setup
  464          * information in these cases to come up with the right answer.
  465          * The major firmware revision number indicates:
  466          *
  467          *      5.xx    BusLogic "W" Series Host Adapters:
  468          *              BT-948/958/958D
  469          *      4.xx    BusLogic "C" Series Host Adapters:
  470          *              BT-946C/956C/956CD/747C/757C/757CD/445C/545C/540CF
  471          *      3.xx    BusLogic "S" Series Host Adapters:
  472          *              BT-747S/747D/757S/757D/445S/545S/542D
  473          *              BT-542B/742A (revision H)
  474          *      2.xx    BusLogic "A" Series Host Adapters:
  475          *              BT-542B/742A (revision G and below)
  476          *      0.xx    AMI FastDisk VLB/EISA BusLogic Clone Host Adapter
  477          */
  478         length_param = sizeof(esetup_info);
  479         error = bt_cmd(bt, BOP_INQUIRE_ESETUP_INFO, &length_param, /*parmlen*/1,
  480                        (u_int8_t*)&esetup_info, sizeof(esetup_info),
  481                        DEFAULT_CMD_TIMEOUT);
  482         if (error != 0) {
  483                 return (error);
  484         }
  485         
  486         bt->bios_addr = esetup_info.bios_addr << 12;
  487 
  488         bt->mailbox_addrlimit = BUS_SPACE_MAXADDR;
  489         if (esetup_info.bus_type == 'A'
  490          && bt->firmware_ver[0] == '2') {
  491                 snprintf(bt->model, sizeof(bt->model), "542B");
  492         } else if (esetup_info.bus_type == 'E'
  493                 && bt->firmware_ver[0] == '2') {
  494 
  495                 /*
  496                  * The 742A seems to object if its mailboxes are
  497                  * allocated above the 16MB mark.
  498                  */
  499                 bt->mailbox_addrlimit = BUS_SPACE_MAXADDR_24BIT;
  500                 snprintf(bt->model, sizeof(bt->model), "742A");
  501         } else if (esetup_info.bus_type == 'E'
  502                 && bt->firmware_ver[0] == '') {
  503                 /* AMI FastDisk EISA Series 441 0.x */
  504                 snprintf(bt->model, sizeof(bt->model), "747A");
  505         } else {
  506                 ha_model_data_t model_data;
  507                 int i;
  508 
  509                 length_param = sizeof(model_data);
  510                 error = bt_cmd(bt, BOP_INQUIRE_MODEL, &length_param, 1,
  511                                (u_int8_t*)&model_data, sizeof(model_data),
  512                                DEFAULT_CMD_TIMEOUT);
  513                 if (error != 0) {
  514                         device_printf(dev,
  515                                       "bt_fetch_adapter_info - Failed Inquire "
  516                                       "Model Number\n");
  517                         return (error);
  518                 }
  519                 for (i = 0; i < sizeof(model_data.ascii_model); i++) {
  520                         bt->model[i] = model_data.ascii_model[i];
  521                         if (bt->model[i] == ' ')
  522                                 break;
  523                 }
  524                 bt->model[i] = '\0';
  525         }
  526 
  527         bt->level_trigger_ints = esetup_info.level_trigger_ints ? 1 : 0;
  528 
  529         /* SG element limits */
  530         bt->max_sg = esetup_info.max_sg;
  531 
  532         /* Set feature flags */
  533         bt->wide_bus = esetup_info.wide_bus;
  534         bt->diff_bus = esetup_info.diff_bus;
  535         bt->ultra_scsi = esetup_info.ultra_scsi;
  536 
  537         if ((bt->firmware_ver[0] == '5')
  538          || (bt->firmware_ver[0] == '4' && bt->wide_bus))
  539                 bt->extended_lun = TRUE;
  540 
  541         bt->strict_rr = (strcmp(bt->firmware_ver, "3.31") >= 0);
  542 
  543         bt->extended_trans =
  544             ((bt_inb(bt, GEOMETRY_REG) & EXTENDED_TRANSLATION) != 0);
  545 
  546         /*
  547          * Determine max CCB count and whether tagged queuing is
  548          * available based on controller type. Tagged queuing
  549          * only works on 'W' series adapters, 'C' series adapters
  550          * with firmware of rev 4.42 and higher, and 'S' series
  551          * adapters with firmware of rev 3.35 and higher.  The
  552          * maximum CCB counts are as follows:
  553          *
  554          *      192     BT-948/958/958D
  555          *      100     BT-946C/956C/956CD/747C/757C/757CD/445C
  556          *      50      BT-545C/540CF
  557          *      30      BT-747S/747D/757S/757D/445S/545S/542D/542B/742A
  558          */
  559         if (bt->firmware_ver[0] == '5') {
  560                 bt->max_ccbs = 192;
  561                 bt->tag_capable = TRUE;
  562         } else if (bt->firmware_ver[0] == '4') {
  563                 if (bt->model[0] == '5')
  564                         bt->max_ccbs = 50;
  565                 else
  566                         bt->max_ccbs = 100;
  567                 bt->tag_capable = (strcmp(bt->firmware_ver, "4.22") >= 0);
  568         } else {
  569                 bt->max_ccbs = 30;
  570                 if (bt->firmware_ver[0] == '3'
  571                  && (strcmp(bt->firmware_ver, "3.35") >= 0))
  572                         bt->tag_capable = TRUE;
  573                 else
  574                         bt->tag_capable = FALSE;
  575         }
  576 
  577         if (bt->tag_capable != FALSE)
  578                 bt->tags_permitted = ALL_TARGETS;
  579 
  580         /* Determine Sync/Wide/Disc settings */
  581         if (bt->firmware_ver[0] >= '4') {
  582                 auto_scsi_data_t auto_scsi_data;
  583                 fetch_lram_params_t fetch_lram_params;
  584                 int error;
  585                 
  586                 /*
  587                  * These settings are stored in the
  588                  * AutoSCSI data in LRAM of 'W' and 'C'
  589                  * adapters.
  590                  */
  591                 fetch_lram_params.offset = AUTO_SCSI_BYTE_OFFSET;
  592                 fetch_lram_params.response_len = sizeof(auto_scsi_data);
  593                 error = bt_cmd(bt, BOP_FETCH_LRAM,
  594                                (u_int8_t*)&fetch_lram_params,
  595                                sizeof(fetch_lram_params),
  596                                (u_int8_t*)&auto_scsi_data,
  597                                sizeof(auto_scsi_data), DEFAULT_CMD_TIMEOUT);
  598 
  599                 if (error != 0) {
  600                         device_printf(dev,
  601                                       "bt_fetch_adapter_info - Failed "
  602                                       "Get Auto SCSI Info\n");
  603                         return (error);
  604                 }
  605 
  606                 bt->disc_permitted = auto_scsi_data.low_disc_permitted
  607                                    | (auto_scsi_data.high_disc_permitted << 8);
  608                 bt->sync_permitted = auto_scsi_data.low_sync_permitted
  609                                    | (auto_scsi_data.high_sync_permitted << 8);
  610                 bt->fast_permitted = auto_scsi_data.low_fast_permitted
  611                                    | (auto_scsi_data.high_fast_permitted << 8);
  612                 bt->ultra_permitted = auto_scsi_data.low_ultra_permitted
  613                                    | (auto_scsi_data.high_ultra_permitted << 8);
  614                 bt->wide_permitted = auto_scsi_data.low_wide_permitted
  615                                    | (auto_scsi_data.high_wide_permitted << 8);
  616 
  617                 if (bt->ultra_scsi == FALSE)
  618                         bt->ultra_permitted = 0;
  619 
  620                 if (bt->wide_bus == FALSE)
  621                         bt->wide_permitted = 0;
  622         } else {
  623                 /*
  624                  * 'S' and 'A' series have this information in the setup
  625                  * information structure.
  626                  */
  627                 setup_data_t    setup_info;
  628 
  629                 length_param = sizeof(setup_info);
  630                 error = bt_cmd(bt, BOP_INQUIRE_SETUP_INFO, &length_param,
  631                                /*paramlen*/1, (u_int8_t*)&setup_info,
  632                                sizeof(setup_info), DEFAULT_CMD_TIMEOUT);
  633 
  634                 if (error != 0) {
  635                         device_printf(dev,
  636                                       "bt_fetch_adapter_info - Failed "
  637                                       "Get Setup Info\n");
  638                         return (error);
  639                 }
  640 
  641                 if (setup_info.initiate_sync != 0) {
  642                         bt->sync_permitted = ALL_TARGETS;
  643 
  644                         if (bt->model[0] == '7') {
  645                                 if (esetup_info.sync_neg10MB != 0)
  646                                         bt->fast_permitted = ALL_TARGETS;
  647                                 if (strcmp(bt->model, "757") == 0)
  648                                         bt->wide_permitted = ALL_TARGETS;
  649                         }
  650                 }
  651                 bt->disc_permitted = ALL_TARGETS;
  652         }
  653 
  654         /* We need as many mailboxes as we can have ccbs */
  655         bt->num_boxes = bt->max_ccbs;
  656 
  657         /* Determine our SCSI ID */
  658         
  659         error = bt_cmd(bt, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
  660                        (u_int8_t*)&config_data, sizeof(config_data),
  661                        DEFAULT_CMD_TIMEOUT);
  662         if (error != 0) {
  663                 device_printf(dev,
  664                               "bt_fetch_adapter_info - Failed Get Config\n");
  665                 return (error);
  666         }
  667         bt->scsi_id = config_data.scsi_id;
  668 
  669         return (0);
  670 }
  671 
  672 /*
  673  * Start the board, ready for normal operation
  674  */
  675 int
  676 bt_init(device_t dev)
  677 {
  678         struct bt_softc *bt = device_get_softc(dev);
  679 
  680         /* Announce the Adapter */
  681         device_printf(dev, "BT-%s FW Rev. %s ", bt->model, bt->firmware_ver);
  682 
  683         if (bt->ultra_scsi != 0)
  684                 printf("Ultra ");
  685 
  686         if (bt->wide_bus != 0)
  687                 printf("Wide ");
  688         else
  689                 printf("Narrow ");
  690 
  691         if (bt->diff_bus != 0)
  692                 printf("Diff ");
  693 
  694         printf("SCSI Host Adapter, SCSI ID %d, %d CCBs\n", bt->scsi_id,
  695                bt->max_ccbs);
  696 
  697         /*
  698          * Create our DMA tags.  These tags define the kinds of device
  699          * accessible memory allocations and memory mappings we will 
  700          * need to perform during normal operation.
  701          *
  702          * Unless we need to further restrict the allocation, we rely
  703          * on the restrictions of the parent dmat, hence the common
  704          * use of MAXADDR and MAXSIZE.
  705          */
  706 
  707         /* DMA tag for mapping buffers into device visible space. */
  708         if (bus_dma_tag_create( /* parent       */ bt->parent_dmat,
  709                                 /* alignment    */ 1,
  710                                 /* boundary     */ 0,
  711                                 /* lowaddr      */ BUS_SPACE_MAXADDR,
  712                                 /* highaddr     */ BUS_SPACE_MAXADDR,
  713                                 /* filter       */ NULL,
  714                                 /* filterarg    */ NULL,
  715                                 /* maxsize      */ MAXBSIZE,
  716                                 /* nsegments    */ BT_NSEG,
  717                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
  718                                 /* flags        */ BUS_DMA_ALLOCNOW,
  719                                 &bt->buffer_dmat) != 0) {
  720                 goto error_exit;
  721         }
  722 
  723         bt->init_level++;
  724         /* DMA tag for our mailboxes */
  725         if (bus_dma_tag_create( /* parent       */ bt->parent_dmat,
  726                                 /* alignment    */ 1,
  727                                 /* boundary     */ 0,
  728                                 /* lowaddr      */ bt->mailbox_addrlimit,
  729                                 /* highaddr     */ BUS_SPACE_MAXADDR,
  730                                 /* filter       */ NULL,
  731                                 /* filterarg    */ NULL,
  732                                 /* maxsize      */ bt->num_boxes *
  733                                                    (sizeof(bt_mbox_in_t) +
  734                                                     sizeof(bt_mbox_out_t)),
  735                                 /* nsegments    */ 1,
  736                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
  737                                 /* flags        */ 0,
  738                                 &bt->mailbox_dmat) != 0) {
  739                 goto error_exit;
  740         }
  741 
  742         bt->init_level++;
  743 
  744         /* Allocation for our mailboxes */
  745         if (bus_dmamem_alloc(bt->mailbox_dmat, (void **)&bt->out_boxes,
  746                              BUS_DMA_NOWAIT, &bt->mailbox_dmamap) != 0) {
  747                 goto error_exit;
  748         }
  749 
  750         bt->init_level++;
  751 
  752         /* And permanently map them */
  753         bus_dmamap_load(bt->mailbox_dmat, bt->mailbox_dmamap,
  754                         bt->out_boxes,
  755                         bt->num_boxes * (sizeof(bt_mbox_in_t)
  756                                        + sizeof(bt_mbox_out_t)),
  757                         btmapmboxes, bt, /*flags*/0);
  758 
  759         bt->init_level++;
  760 
  761         bt->in_boxes = (bt_mbox_in_t *)&bt->out_boxes[bt->num_boxes];
  762 
  763         btinitmboxes(bt);
  764 
  765         /* DMA tag for our ccb structures */
  766         if (bus_dma_tag_create( /* parent       */ bt->parent_dmat,
  767                                 /* alignment    */ 1,
  768                                 /* boundary     */ 0,
  769                                 /* lowaddr      */ BUS_SPACE_MAXADDR,
  770                                 /* highaddr     */ BUS_SPACE_MAXADDR,
  771                                 /* filter       */ NULL,
  772                                 /* filterarg    */ NULL,
  773                                 /* maxsize      */ bt->max_ccbs *
  774                                                    sizeof(struct bt_ccb),
  775                                 /* nsegments    */ 1,
  776                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
  777                                 /* flags        */ 0,
  778                                 &bt->ccb_dmat) != 0) {
  779                 goto error_exit;
  780         }
  781 
  782         bt->init_level++;
  783 
  784         /* Allocation for our ccbs */
  785         if (bus_dmamem_alloc(bt->ccb_dmat, (void **)&bt->bt_ccb_array,
  786                              BUS_DMA_NOWAIT, &bt->ccb_dmamap) != 0) {
  787                 goto error_exit;
  788         }
  789 
  790         bt->init_level++;
  791 
  792         /* And permanently map them */
  793         bus_dmamap_load(bt->ccb_dmat, bt->ccb_dmamap,
  794                         bt->bt_ccb_array,
  795                         bt->max_ccbs * sizeof(struct bt_ccb),
  796                         btmapccbs, bt, /*flags*/0);
  797 
  798         bt->init_level++;
  799 
  800         /* DMA tag for our S/G structures.  We allocate in page sized chunks */
  801         if (bus_dma_tag_create( /* parent       */ bt->parent_dmat,
  802                                 /* alignment    */ 1,
  803                                 /* boundary     */ 0,
  804                                 /* lowaddr      */ BUS_SPACE_MAXADDR,
  805                                 /* highaddr     */ BUS_SPACE_MAXADDR,
  806                                 /* filter       */ NULL,
  807                                 /* filterarg    */ NULL,
  808                                 /* maxsize      */ PAGE_SIZE,
  809                                 /* nsegments    */ 1,
  810                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
  811                                 /* flags        */ 0,
  812                                 &bt->sg_dmat) != 0) {
  813                 goto error_exit;
  814         }
  815 
  816         bt->init_level++;
  817 
  818         /* Perform initial CCB allocation */
  819         bzero(bt->bt_ccb_array, bt->max_ccbs * sizeof(struct bt_ccb));
  820         btallocccbs(bt);
  821 
  822         if (bt->num_ccbs == 0) {
  823                 device_printf(dev,
  824                               "bt_init - Unable to allocate initial ccbs\n");
  825                 goto error_exit;
  826         }
  827 
  828         /*
  829          * Note that we are going and return (to probe)
  830          */
  831         return 0;
  832 
  833 error_exit:
  834 
  835         return (ENXIO);
  836 }
  837 
  838 int
  839 bt_attach(device_t dev)
  840 {
  841         struct bt_softc *bt = device_get_softc(dev);
  842         int tagged_dev_openings;
  843         struct cam_devq *devq;
  844         int error;
  845 
  846         /*
  847          * We reserve 1 ccb for error recovery, so don't
  848          * tell the XPT about it.
  849          */
  850         if (bt->tag_capable != 0)
  851                 tagged_dev_openings = bt->max_ccbs - 1;
  852         else
  853                 tagged_dev_openings = 0;
  854 
  855         /*
  856          * Create the device queue for our SIM.
  857          */
  858         devq = cam_simq_alloc(bt->max_ccbs - 1);
  859         if (devq == NULL)
  860                 return (ENOMEM);
  861 
  862         /*
  863          * Construct our SIM entry
  864          */
  865         bt->sim = cam_sim_alloc(btaction, btpoll, "bt", bt, bt->unit,
  866                                 2, tagged_dev_openings, devq);
  867         if (bt->sim == NULL) {
  868                 cam_simq_free(devq);
  869                 return (ENOMEM);
  870         }
  871         
  872         if (xpt_bus_register(bt->sim, 0) != CAM_SUCCESS) {
  873                 cam_sim_free(bt->sim, /*free_devq*/TRUE);
  874                 return (ENXIO);
  875         }
  876         
  877         if (xpt_create_path(&bt->path, /*periph*/NULL,
  878                             cam_sim_path(bt->sim), CAM_TARGET_WILDCARD,
  879                             CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
  880                 xpt_bus_deregister(cam_sim_path(bt->sim));
  881                 cam_sim_free(bt->sim, /*free_devq*/TRUE);
  882                 return (ENXIO);
  883         }
  884                 
  885         /*
  886          * Setup interrupt.
  887          */
  888         error = bus_setup_intr(dev, bt->irq, INTR_TYPE_CAM|INTR_ENTROPY,
  889                                bt_intr, bt, &bt->ih);
  890         if (error) {
  891                 device_printf(dev, "bus_setup_intr() failed: %d\n", error);
  892                 return (error);
  893         }
  894 
  895         return (0);
  896 }
  897 
  898 int
  899 bt_check_probed_iop(u_int ioport)
  900 {
  901         u_int i;
  902 
  903         for (i = 0; i < BT_NUM_ISAPORTS; i++) {
  904                 if (bt_isa_ports[i].addr == ioport) {
  905                         if (bt_isa_ports[i].probed != 0)
  906                                 return (1);
  907                         else {
  908                                 return (0);
  909                         }
  910                 }
  911         }
  912         return (1);
  913 }
  914 
  915 void
  916 bt_mark_probed_bio(isa_compat_io_t port)
  917 {
  918         if (port < BIO_DISABLED)
  919                 bt_mark_probed_iop(bt_board_ports[port]);
  920 }
  921 
  922 void
  923 bt_mark_probed_iop(u_int ioport)
  924 {
  925         u_int i;
  926 
  927         for (i = 0; i < BT_NUM_ISAPORTS; i++) {
  928                 if (ioport == bt_isa_ports[i].addr) {
  929                         bt_isa_ports[i].probed = 1;
  930                         break;
  931                 }
  932         }
  933 }
  934 
  935 void
  936 bt_find_probe_range(int ioport, int *port_index, int *max_port_index)
  937 {
  938         if (ioport > 0) {
  939                 int i;
  940 
  941                 for (i = 0;i < BT_NUM_ISAPORTS; i++)
  942                         if (ioport <= bt_isa_ports[i].addr)
  943                                 break;
  944                 if ((i >= BT_NUM_ISAPORTS)
  945                  || (ioport != bt_isa_ports[i].addr)) {
  946                         printf(
  947 "bt_isa_probe: Invalid baseport of 0x%x specified.\n"
  948 "bt_isa_probe: Nearest valid baseport is 0x%x.\n"
  949 "bt_isa_probe: Failing probe.\n",
  950                                ioport,
  951                                (i < BT_NUM_ISAPORTS)
  952                                     ? bt_isa_ports[i].addr
  953                                     : bt_isa_ports[BT_NUM_ISAPORTS - 1].addr);
  954                         *port_index = *max_port_index = -1;
  955                         return;
  956                 }
  957                 *port_index = *max_port_index = bt_isa_ports[i].bio;
  958         } else {
  959                 *port_index = 0;
  960                 *max_port_index = BT_NUM_ISAPORTS - 1;
  961         }
  962 }
  963 
  964 int
  965 bt_iop_from_bio(isa_compat_io_t bio_index)
  966 {
  967         if (bio_index >= 0 && bio_index < BT_NUM_ISAPORTS)
  968                 return (bt_board_ports[bio_index]);
  969         return (-1);
  970 }
  971 
  972 
  973 static void
  974 btallocccbs(struct bt_softc *bt)
  975 {
  976         struct bt_ccb *next_ccb;
  977         struct sg_map_node *sg_map;
  978         bus_addr_t physaddr;
  979         bt_sg_t *segs;
  980         int newcount;
  981         int i;
  982 
  983         if (bt->num_ccbs >= bt->max_ccbs)
  984                 /* Can't allocate any more */
  985                 return;
  986 
  987         next_ccb = &bt->bt_ccb_array[bt->num_ccbs];
  988 
  989         sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_NOWAIT);
  990 
  991         if (sg_map == NULL)
  992                 goto error_exit;
  993 
  994         /* Allocate S/G space for the next batch of CCBS */
  995         if (bus_dmamem_alloc(bt->sg_dmat, (void **)&sg_map->sg_vaddr,
  996                              BUS_DMA_NOWAIT, &sg_map->sg_dmamap) != 0) {
  997                 free(sg_map, M_DEVBUF);
  998                 goto error_exit;
  999         }
 1000 
 1001         SLIST_INSERT_HEAD(&bt->sg_maps, sg_map, links);
 1002 
 1003         bus_dmamap_load(bt->sg_dmat, sg_map->sg_dmamap, sg_map->sg_vaddr,
 1004                         PAGE_SIZE, btmapsgs, bt, /*flags*/0);
 1005         
 1006         segs = sg_map->sg_vaddr;
 1007         physaddr = sg_map->sg_physaddr;
 1008 
 1009         newcount = (PAGE_SIZE / (BT_NSEG * sizeof(bt_sg_t)));
 1010         for (i = 0; bt->num_ccbs < bt->max_ccbs && i < newcount; i++) {
 1011                 int error;
 1012 
 1013                 next_ccb->sg_list = segs;
 1014                 next_ccb->sg_list_phys = physaddr;
 1015                 next_ccb->flags = BCCB_FREE;
 1016                 error = bus_dmamap_create(bt->buffer_dmat, /*flags*/0,
 1017                                           &next_ccb->dmamap);
 1018                 if (error != 0)
 1019                         break;
 1020                 SLIST_INSERT_HEAD(&bt->free_bt_ccbs, next_ccb, links);
 1021                 segs += BT_NSEG;
 1022                 physaddr += (BT_NSEG * sizeof(bt_sg_t));
 1023                 next_ccb++;
 1024                 bt->num_ccbs++;
 1025         }
 1026 
 1027         /* Reserve a CCB for error recovery */
 1028         if (bt->recovery_bccb == NULL) {
 1029                 bt->recovery_bccb = SLIST_FIRST(&bt->free_bt_ccbs);
 1030                 SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links);
 1031         }
 1032 
 1033         if (SLIST_FIRST(&bt->free_bt_ccbs) != NULL)
 1034                 return;
 1035 
 1036 error_exit:
 1037         device_printf(bt->dev, "Can't malloc BCCBs\n");
 1038 }
 1039 
 1040 static __inline void
 1041 btfreeccb(struct bt_softc *bt, struct bt_ccb *bccb)
 1042 {
 1043         int s;
 1044 
 1045         s = splcam();
 1046         if ((bccb->flags & BCCB_ACTIVE) != 0)
 1047                 LIST_REMOVE(&bccb->ccb->ccb_h, sim_links.le);
 1048         if (bt->resource_shortage != 0
 1049          && (bccb->ccb->ccb_h.status & CAM_RELEASE_SIMQ) == 0) {
 1050                 bccb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
 1051                 bt->resource_shortage = FALSE;
 1052         }
 1053         bccb->flags = BCCB_FREE;
 1054         SLIST_INSERT_HEAD(&bt->free_bt_ccbs, bccb, links);
 1055         bt->active_ccbs--;
 1056         splx(s);
 1057 }
 1058 
 1059 static __inline struct bt_ccb*
 1060 btgetccb(struct bt_softc *bt)
 1061 {
 1062         struct  bt_ccb* bccb;
 1063         int     s;
 1064 
 1065         s = splcam();
 1066         if ((bccb = SLIST_FIRST(&bt->free_bt_ccbs)) != NULL) {
 1067                 SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links);
 1068                 bt->active_ccbs++;
 1069         } else {
 1070                 btallocccbs(bt);
 1071                 bccb = SLIST_FIRST(&bt->free_bt_ccbs);
 1072                 if (bccb != NULL) {
 1073                         SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links);
 1074                         bt->active_ccbs++;
 1075                 }
 1076         }
 1077         splx(s);
 1078 
 1079         return (bccb);
 1080 }
 1081 
 1082 static void
 1083 btaction(struct cam_sim *sim, union ccb *ccb)
 1084 {
 1085         struct  bt_softc *bt;
 1086 
 1087         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("btaction\n"));
 1088         
 1089         bt = (struct bt_softc *)cam_sim_softc(sim);
 1090         
 1091         switch (ccb->ccb_h.func_code) {
 1092         /* Common cases first */
 1093         case XPT_SCSI_IO:       /* Execute the requested I/O operation */
 1094         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
 1095         {
 1096                 struct  bt_ccb  *bccb;
 1097                 struct  bt_hccb *hccb;
 1098 
 1099                 /*
 1100                  * get a bccb to use.
 1101                  */
 1102                 if ((bccb = btgetccb(bt)) == NULL) {
 1103                         int s;
 1104 
 1105                         s = splcam();
 1106                         bt->resource_shortage = TRUE;
 1107                         splx(s);
 1108                         xpt_freeze_simq(bt->sim, /*count*/1);
 1109                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
 1110                         xpt_done(ccb);
 1111                         return;
 1112                 }
 1113                 
 1114                 hccb = &bccb->hccb;
 1115 
 1116                 /*
 1117                  * So we can find the BCCB when an abort is requested
 1118                  */
 1119                 bccb->ccb = ccb;
 1120                 ccb->ccb_h.ccb_bccb_ptr = bccb;
 1121                 ccb->ccb_h.ccb_bt_ptr = bt;
 1122 
 1123                 /*
 1124                  * Put all the arguments for the xfer in the bccb
 1125                  */
 1126                 hccb->target_id = ccb->ccb_h.target_id;
 1127                 hccb->target_lun = ccb->ccb_h.target_lun;
 1128                 hccb->btstat = 0;
 1129                 hccb->sdstat = 0;
 1130 
 1131                 if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
 1132                         struct ccb_scsiio *csio;
 1133                         struct ccb_hdr *ccbh;
 1134 
 1135                         csio = &ccb->csio;
 1136                         ccbh = &csio->ccb_h;
 1137                         hccb->opcode = INITIATOR_CCB_WRESID;
 1138                         hccb->datain = (ccb->ccb_h.flags & CAM_DIR_IN) ? 1 : 0;
 1139                         hccb->dataout =(ccb->ccb_h.flags & CAM_DIR_OUT) ? 1 : 0;
 1140                         hccb->cmd_len = csio->cdb_len;
 1141                         if (hccb->cmd_len > sizeof(hccb->scsi_cdb)) {
 1142                                 ccb->ccb_h.status = CAM_REQ_INVALID;
 1143                                 btfreeccb(bt, bccb);
 1144                                 xpt_done(ccb);
 1145                                 return;
 1146                         }
 1147                         hccb->sense_len = csio->sense_len;
 1148                         if ((ccbh->flags & CAM_TAG_ACTION_VALID) != 0
 1149                          && ccb->csio.tag_action != CAM_TAG_ACTION_NONE) {
 1150                                 hccb->tag_enable = TRUE;
 1151                                 hccb->tag_type = (ccb->csio.tag_action & 0x3);
 1152                         } else {
 1153                                 hccb->tag_enable = FALSE;
 1154                                 hccb->tag_type = 0;
 1155                         }
 1156                         if ((ccbh->flags & CAM_CDB_POINTER) != 0) {
 1157                                 if ((ccbh->flags & CAM_CDB_PHYS) == 0) {
 1158                                         bcopy(csio->cdb_io.cdb_ptr,
 1159                                               hccb->scsi_cdb, hccb->cmd_len);
 1160                                 } else {
 1161                                         /* I guess I could map it in... */
 1162                                         ccbh->status = CAM_REQ_INVALID;
 1163                                         btfreeccb(bt, bccb);
 1164                                         xpt_done(ccb);
 1165                                         return;
 1166                                 }
 1167                         } else {
 1168                                 bcopy(csio->cdb_io.cdb_bytes,
 1169                                       hccb->scsi_cdb, hccb->cmd_len);
 1170                         }
 1171                         /* If need be, bounce our sense buffer */
 1172                         if (bt->sense_buffers != NULL) {
 1173                                 hccb->sense_addr = btsensepaddr(bt, bccb);
 1174                         } else {
 1175                                 hccb->sense_addr = vtophys(&csio->sense_data);
 1176                         }
 1177                         /*
 1178                          * If we have any data to send with this command,
 1179                          * map it into bus space.
 1180                          */
 1181                         /* Only use S/G if there is a transfer */
 1182                         if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 1183                                 if ((ccbh->flags & CAM_SCATTER_VALID) == 0) {
 1184                                         /*
 1185                                          * We've been given a pointer
 1186                                          * to a single buffer.
 1187                                          */
 1188                                         if ((ccbh->flags & CAM_DATA_PHYS)==0) {
 1189                                                 int s;
 1190                                                 int error;
 1191 
 1192                                                 s = splsoftvm();
 1193                                                 error = bus_dmamap_load(
 1194                                                     bt->buffer_dmat,
 1195                                                     bccb->dmamap,
 1196                                                     csio->data_ptr,
 1197                                                     csio->dxfer_len,
 1198                                                     btexecuteccb,
 1199                                                     bccb,
 1200                                                     /*flags*/0);
 1201                                                 if (error == EINPROGRESS) {
 1202                                                         /*
 1203                                                          * So as to maintain
 1204                                                          * ordering, freeze the
 1205                                                          * controller queue
 1206                                                          * until our mapping is
 1207                                                          * returned.
 1208                                                          */
 1209                                                         xpt_freeze_simq(bt->sim,
 1210                                                                         1);
 1211                                                         csio->ccb_h.status |=
 1212                                                             CAM_RELEASE_SIMQ;
 1213                                                 }
 1214                                                 splx(s);
 1215                                         } else {
 1216                                                 struct bus_dma_segment seg; 
 1217 
 1218                                                 /* Pointer to physical buffer */
 1219                                                 seg.ds_addr =
 1220                                                     (bus_addr_t)csio->data_ptr;
 1221                                                 seg.ds_len = csio->dxfer_len;
 1222                                                 btexecuteccb(bccb, &seg, 1, 0);
 1223                                         }
 1224                                 } else {
 1225                                         struct bus_dma_segment *segs;
 1226 
 1227                                         if ((ccbh->flags & CAM_DATA_PHYS) != 0)
 1228                                                 panic("btaction - Physical "
 1229                                                       "segment pointers "
 1230                                                       "unsupported");
 1231 
 1232                                         if ((ccbh->flags&CAM_SG_LIST_PHYS)==0)
 1233                                                 panic("btaction - Virtual "
 1234                                                       "segment addresses "
 1235                                                       "unsupported");
 1236 
 1237                                         /* Just use the segments provided */
 1238                                         segs = (struct bus_dma_segment *)
 1239                                             csio->data_ptr;
 1240                                         btexecuteccb(bccb, segs,
 1241                                                      csio->sglist_cnt, 0);
 1242                                 }
 1243                         } else {
 1244                                 btexecuteccb(bccb, NULL, 0, 0);
 1245                         }
 1246                 } else {
 1247                         hccb->opcode = INITIATOR_BUS_DEV_RESET;
 1248                         /* No data transfer */
 1249                         hccb->datain = TRUE;
 1250                         hccb->dataout = TRUE;
 1251                         hccb->cmd_len = 0;
 1252                         hccb->sense_len = 0;
 1253                         hccb->tag_enable = FALSE;
 1254                         hccb->tag_type = 0;
 1255                         btexecuteccb(bccb, NULL, 0, 0);
 1256                 }
 1257                 break;
 1258         }
 1259         case XPT_EN_LUN:                /* Enable LUN as a target */
 1260         case XPT_TARGET_IO:             /* Execute target I/O request */
 1261         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
 1262         case XPT_CONT_TARGET_IO:        /* Continue Host Target I/O Connection*/
 1263         case XPT_ABORT:                 /* Abort the specified CCB */
 1264                 /* XXX Implement */
 1265                 ccb->ccb_h.status = CAM_REQ_INVALID;
 1266                 xpt_done(ccb);
 1267                 break;
 1268         case XPT_SET_TRAN_SETTINGS:
 1269         {
 1270                 /* XXX Implement */
 1271                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 1272                 xpt_done(ccb);
 1273                 break;
 1274         }
 1275         case XPT_GET_TRAN_SETTINGS:
 1276         /* Get default/user set transfer settings for the target */
 1277         {
 1278                 struct  ccb_trans_settings *cts;
 1279                 u_int   target_mask;
 1280 
 1281                 cts = &ccb->cts;
 1282                 target_mask = 0x01 << ccb->ccb_h.target_id;
 1283 #ifdef  CAM_NEW_TRAN_CODE
 1284                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
 1285                         struct ccb_trans_settings_scsi *scsi =
 1286                             &cts->proto_specific.scsi;
 1287                         struct ccb_trans_settings_spi *spi =
 1288                             &cts->xport_specific.spi;
 1289                         cts->protocol = PROTO_SCSI;
 1290                         cts->protocol_version = SCSI_REV_2;
 1291                         cts->transport = XPORT_SPI;
 1292                         cts->transport_version = 2;
 1293 
 1294                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
 1295                         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
 1296 
 1297                         if ((bt->disc_permitted & target_mask) != 0)
 1298                                 spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 1299                         if ((bt->tags_permitted & target_mask) != 0)
 1300                                 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 1301 
 1302                         if ((bt->ultra_permitted & target_mask) != 0)
 1303                                 spi->sync_period = 12;
 1304                         else if ((bt->fast_permitted & target_mask) != 0)
 1305                                 spi->sync_period = 25;
 1306                         else if ((bt->sync_permitted & target_mask) != 0)
 1307                                 spi->sync_period = 50;
 1308                         else
 1309                                 spi->sync_period = 0;
 1310 
 1311                         if (spi->sync_period != 0)
 1312                                 spi->sync_offset = 15;
 1313 
 1314                         spi->valid |= CTS_SPI_VALID_SYNC_RATE;
 1315                         spi->valid |= CTS_SPI_VALID_SYNC_OFFSET;
 1316 
 1317                         spi->valid |= CTS_SPI_VALID_BUS_WIDTH;
 1318                         if ((bt->wide_permitted & target_mask) != 0)
 1319                                 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
 1320                         else
 1321                                 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
 1322 
 1323                         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
 1324                                 scsi->valid = CTS_SCSI_VALID_TQ;
 1325                                 spi->valid |= CTS_SPI_VALID_DISC;
 1326                         } else
 1327                                 scsi->valid = 0;
 1328                 } else {
 1329 #else
 1330                 if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) {
 1331                         cts->flags = 0;
 1332                         if ((bt->disc_permitted & target_mask) != 0)
 1333                                 cts->flags |= CCB_TRANS_DISC_ENB;
 1334                         if ((bt->tags_permitted & target_mask) != 0)
 1335                                 cts->flags |= CCB_TRANS_TAG_ENB;
 1336                         if ((bt->wide_permitted & target_mask) != 0)
 1337                                 cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
 1338                         else
 1339                                 cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
 1340                         if ((bt->ultra_permitted & target_mask) != 0)
 1341                                 cts->sync_period = 12;
 1342                         else if ((bt->fast_permitted & target_mask) != 0)
 1343                                 cts->sync_period = 25;
 1344                         else if ((bt->sync_permitted & target_mask) != 0)
 1345                                 cts->sync_period = 50;
 1346                         else
 1347                                 cts->sync_period = 0;
 1348 
 1349                         if (cts->sync_period != 0)
 1350                                 cts->sync_offset = 15;
 1351 
 1352                         cts->valid = CCB_TRANS_SYNC_RATE_VALID
 1353                                    | CCB_TRANS_SYNC_OFFSET_VALID
 1354                                    | CCB_TRANS_BUS_WIDTH_VALID
 1355                                    | CCB_TRANS_DISC_VALID
 1356                                    | CCB_TRANS_TQ_VALID;
 1357                 } else {
 1358 #endif
 1359                         btfetchtransinfo(bt, cts);
 1360                 }
 1361 
 1362                 ccb->ccb_h.status = CAM_REQ_CMP;
 1363                 xpt_done(ccb);
 1364                 break;
 1365         }
 1366         case XPT_CALC_GEOMETRY:
 1367         {
 1368                 struct    ccb_calc_geometry *ccg;
 1369                 u_int32_t size_mb;
 1370                 u_int32_t secs_per_cylinder;
 1371 
 1372                 ccg = &ccb->ccg;
 1373                 size_mb = ccg->volume_size
 1374                         / ((1024L * 1024L) / ccg->block_size);
 1375                 
 1376                 if (size_mb >= 1024 && (bt->extended_trans != 0)) {
 1377                         if (size_mb >= 2048) {
 1378                                 ccg->heads = 255;
 1379                                 ccg->secs_per_track = 63;
 1380                         } else {
 1381                                 ccg->heads = 128;
 1382                                 ccg->secs_per_track = 32;
 1383                         }
 1384                 } else {
 1385                         ccg->heads = 64;
 1386                         ccg->secs_per_track = 32;
 1387                 }
 1388                 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
 1389                 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
 1390                 ccb->ccb_h.status = CAM_REQ_CMP;
 1391                 xpt_done(ccb);
 1392                 break;
 1393         }
 1394         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
 1395         {
 1396                 btreset(bt, /*hardreset*/TRUE);
 1397                 ccb->ccb_h.status = CAM_REQ_CMP;
 1398                 xpt_done(ccb);
 1399                 break;
 1400         }
 1401         case XPT_TERM_IO:               /* Terminate the I/O process */
 1402                 /* XXX Implement */
 1403                 ccb->ccb_h.status = CAM_REQ_INVALID;
 1404                 xpt_done(ccb);
 1405                 break;
 1406         case XPT_PATH_INQ:              /* Path routing inquiry */
 1407         {
 1408                 struct ccb_pathinq *cpi = &ccb->cpi;
 1409                 
 1410                 cpi->version_num = 1; /* XXX??? */
 1411                 cpi->hba_inquiry = PI_SDTR_ABLE;
 1412                 if (bt->tag_capable != 0)
 1413                         cpi->hba_inquiry |= PI_TAG_ABLE;
 1414                 if (bt->wide_bus != 0)
 1415                         cpi->hba_inquiry |= PI_WIDE_16;
 1416                 cpi->target_sprt = 0;
 1417                 cpi->hba_misc = 0;
 1418                 cpi->hba_eng_cnt = 0;
 1419                 cpi->max_target = bt->wide_bus ? 15 : 7;
 1420                 cpi->max_lun = 7;
 1421                 cpi->initiator_id = bt->scsi_id;
 1422                 cpi->bus_id = cam_sim_bus(sim);
 1423                 cpi->base_transfer_speed = 3300;
 1424                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 1425                 strncpy(cpi->hba_vid, "BusLogic", HBA_IDLEN);
 1426                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 1427                 cpi->unit_number = cam_sim_unit(sim);
 1428                 cpi->ccb_h.status = CAM_REQ_CMP;
 1429 #ifdef  CAM_NEW_TRAN_CODE
 1430                 cpi->transport = XPORT_SPI;
 1431                 cpi->transport_version = 2;
 1432                 cpi->protocol = PROTO_SCSI;
 1433                 cpi->protocol_version = SCSI_REV_2;
 1434 #endif
 1435                 xpt_done(ccb);
 1436                 break;
 1437         }
 1438         default:
 1439                 ccb->ccb_h.status = CAM_REQ_INVALID;
 1440                 xpt_done(ccb);
 1441                 break;
 1442         }
 1443 }
 1444 
 1445 static void
 1446 btexecuteccb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error)
 1447 {
 1448         struct   bt_ccb *bccb;
 1449         union    ccb *ccb;
 1450         struct   bt_softc *bt;
 1451         int      s;
 1452 
 1453         bccb = (struct bt_ccb *)arg;
 1454         ccb = bccb->ccb;
 1455         bt = (struct bt_softc *)ccb->ccb_h.ccb_bt_ptr;
 1456 
 1457         if (error != 0) {
 1458                 if (error != EFBIG)
 1459                         device_printf(bt->dev,
 1460                                       "Unexepected error 0x%x returned from "
 1461                                       "bus_dmamap_load\n", error);
 1462                 if (ccb->ccb_h.status == CAM_REQ_INPROG) {
 1463                         xpt_freeze_devq(ccb->ccb_h.path, /*count*/1);
 1464                         ccb->ccb_h.status = CAM_REQ_TOO_BIG|CAM_DEV_QFRZN;
 1465                 }
 1466                 btfreeccb(bt, bccb);
 1467                 xpt_done(ccb);
 1468                 return;
 1469         }
 1470                 
 1471         if (nseg != 0) {
 1472                 bt_sg_t *sg;
 1473                 bus_dma_segment_t *end_seg;
 1474                 bus_dmasync_op_t op;
 1475 
 1476                 end_seg = dm_segs + nseg;
 1477 
 1478                 /* Copy the segments into our SG list */
 1479                 sg = bccb->sg_list;
 1480                 while (dm_segs < end_seg) {
 1481                         sg->len = dm_segs->ds_len;
 1482                         sg->addr = dm_segs->ds_addr;
 1483                         sg++;
 1484                         dm_segs++;
 1485                 }
 1486 
 1487                 if (nseg > 1) {
 1488                         bccb->hccb.opcode = INITIATOR_SG_CCB_WRESID;
 1489                         bccb->hccb.data_len = sizeof(bt_sg_t) * nseg;
 1490                         bccb->hccb.data_addr = bccb->sg_list_phys;
 1491                 } else {
 1492                         bccb->hccb.data_len = bccb->sg_list->len;
 1493                         bccb->hccb.data_addr = bccb->sg_list->addr;
 1494                 }
 1495 
 1496                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 1497                         op = BUS_DMASYNC_PREREAD;
 1498                 else
 1499                         op = BUS_DMASYNC_PREWRITE;
 1500 
 1501                 bus_dmamap_sync(bt->buffer_dmat, bccb->dmamap, op);
 1502 
 1503         } else {
 1504                 bccb->hccb.opcode = INITIATOR_CCB;
 1505                 bccb->hccb.data_len = 0;
 1506                 bccb->hccb.data_addr = 0;
 1507         }
 1508 
 1509         s = splcam();
 1510 
 1511         /*
 1512          * Last time we need to check if this CCB needs to
 1513          * be aborted.
 1514          */
 1515         if (ccb->ccb_h.status != CAM_REQ_INPROG) {
 1516                 if (nseg != 0)
 1517                         bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap);
 1518                 btfreeccb(bt, bccb);
 1519                 xpt_done(ccb);
 1520                 splx(s);
 1521                 return;
 1522         }
 1523                 
 1524         bccb->flags = BCCB_ACTIVE;
 1525         ccb->ccb_h.status |= CAM_SIM_QUEUED;
 1526         LIST_INSERT_HEAD(&bt->pending_ccbs, &ccb->ccb_h, sim_links.le);
 1527 
 1528         ccb->ccb_h.timeout_ch =
 1529             timeout(bttimeout, (caddr_t)bccb,
 1530                     (ccb->ccb_h.timeout * hz) / 1000);
 1531 
 1532         /* Tell the adapter about this command */
 1533         bt->cur_outbox->ccb_addr = btccbvtop(bt, bccb);
 1534         if (bt->cur_outbox->action_code != BMBO_FREE) {
 1535                 /*
 1536                  * We should never encounter a busy mailbox.
 1537                  * If we do, warn the user, and treat it as
 1538                  * a resource shortage.  If the controller is
 1539                  * hung, one of the pending transactions will
 1540                  * timeout causing us to start recovery operations.
 1541                  */
 1542                 device_printf(bt->dev,
 1543                               "Encountered busy mailbox with %d out of %d "
 1544                               "commands active!!!\n", bt->active_ccbs,
 1545                               bt->max_ccbs);
 1546                 untimeout(bttimeout, bccb, ccb->ccb_h.timeout_ch);
 1547                 if (nseg != 0)
 1548                         bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap);
 1549                 btfreeccb(bt, bccb);
 1550                 bt->resource_shortage = TRUE;
 1551                 xpt_freeze_simq(bt->sim, /*count*/1);
 1552                 ccb->ccb_h.status = CAM_REQUEUE_REQ;
 1553                 xpt_done(ccb);
 1554                 return;
 1555         }
 1556         bt->cur_outbox->action_code = BMBO_START;       
 1557         bt_outb(bt, COMMAND_REG, BOP_START_MBOX);
 1558         btnextoutbox(bt);
 1559         splx(s);
 1560 }
 1561 
 1562 void
 1563 bt_intr(void *arg)
 1564 {
 1565         struct  bt_softc *bt;
 1566         u_int   intstat;
 1567 
 1568         bt = (struct bt_softc *)arg;
 1569         while (((intstat = bt_inb(bt, INTSTAT_REG)) & INTR_PENDING) != 0) {
 1570 
 1571                 if ((intstat & CMD_COMPLETE) != 0) {
 1572                         bt->latched_status = bt_inb(bt, STATUS_REG);
 1573                         bt->command_cmp = TRUE;
 1574                 }
 1575 
 1576                 bt_outb(bt, CONTROL_REG, RESET_INTR);
 1577 
 1578                 if ((intstat & IMB_LOADED) != 0) {
 1579                         while (bt->cur_inbox->comp_code != BMBI_FREE) {
 1580                                 btdone(bt,
 1581                                        btccbptov(bt, bt->cur_inbox->ccb_addr),
 1582                                        bt->cur_inbox->comp_code);
 1583                                 bt->cur_inbox->comp_code = BMBI_FREE;
 1584                                 btnextinbox(bt);
 1585                         }
 1586                 }
 1587 
 1588                 if ((intstat & SCSI_BUS_RESET) != 0) {
 1589                         btreset(bt, /*hardreset*/FALSE);
 1590                 }
 1591         }
 1592 }
 1593 
 1594 static void
 1595 btdone(struct bt_softc *bt, struct bt_ccb *bccb, bt_mbi_comp_code_t comp_code)
 1596 {
 1597         union  ccb        *ccb;
 1598         struct ccb_scsiio *csio;
 1599 
 1600         ccb = bccb->ccb;
 1601         csio = &bccb->ccb->csio;
 1602 
 1603         if ((bccb->flags & BCCB_ACTIVE) == 0) {
 1604                 device_printf(bt->dev,
 1605                               "btdone - Attempt to free non-active BCCB %p\n",
 1606                               (void *)bccb);
 1607                 return;
 1608         }
 1609 
 1610         if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 1611                 bus_dmasync_op_t op;
 1612 
 1613                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 1614                         op = BUS_DMASYNC_POSTREAD;
 1615                 else
 1616                         op = BUS_DMASYNC_POSTWRITE;
 1617                 bus_dmamap_sync(bt->buffer_dmat, bccb->dmamap, op);
 1618                 bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap);
 1619         }
 1620 
 1621         if (bccb == bt->recovery_bccb) {
 1622                 /*
 1623                  * The recovery BCCB does not have a CCB associated
 1624                  * with it, so short circuit the normal error handling.
 1625                  * We now traverse our list of pending CCBs and process
 1626                  * any that were terminated by the recovery CCBs action.
 1627                  * We also reinstate timeouts for all remaining, pending,
 1628                  * CCBs.
 1629                  */
 1630                 struct cam_path *path;
 1631                 struct ccb_hdr *ccb_h;
 1632                 cam_status error;
 1633 
 1634                 /* Notify all clients that a BDR occured */
 1635                 error = xpt_create_path(&path, /*periph*/NULL,
 1636                                         cam_sim_path(bt->sim),
 1637                                         bccb->hccb.target_id,
 1638                                         CAM_LUN_WILDCARD);
 1639                 
 1640                 if (error == CAM_REQ_CMP)
 1641                         xpt_async(AC_SENT_BDR, path, NULL);
 1642 
 1643                 ccb_h = LIST_FIRST(&bt->pending_ccbs);
 1644                 while (ccb_h != NULL) {
 1645                         struct bt_ccb *pending_bccb;
 1646 
 1647                         pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr;
 1648                         if (pending_bccb->hccb.target_id
 1649                          == bccb->hccb.target_id) {
 1650                                 pending_bccb->hccb.btstat = BTSTAT_HA_BDR;
 1651                                 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
 1652                                 btdone(bt, pending_bccb, BMBI_ERROR);
 1653                         } else {
 1654                                 ccb_h->timeout_ch =
 1655                                     timeout(bttimeout, (caddr_t)pending_bccb,
 1656                                             (ccb_h->timeout * hz) / 1000);
 1657                                 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
 1658                         }
 1659                 }
 1660                 device_printf(bt->dev, "No longer in timeout\n");
 1661                 return;
 1662         }
 1663 
 1664         untimeout(bttimeout, bccb, ccb->ccb_h.timeout_ch);
 1665 
 1666         switch (comp_code) {
 1667         case BMBI_FREE:
 1668                 device_printf(bt->dev,
 1669                               "btdone - CCB completed with free status!\n");
 1670                 break;
 1671         case BMBI_NOT_FOUND:
 1672                 device_printf(bt->dev,
 1673                               "btdone - CCB Abort failed to find CCB\n");
 1674                 break;
 1675         case BMBI_ABORT:
 1676         case BMBI_ERROR:
 1677                 if (bootverbose) {
 1678                         printf("bt: ccb %p - error %x occured.  "
 1679                                "btstat = %x, sdstat = %x\n",
 1680                                (void *)bccb, comp_code, bccb->hccb.btstat,
 1681                                bccb->hccb.sdstat);
 1682                 }
 1683                 /* An error occured */
 1684                 switch(bccb->hccb.btstat) {
 1685                 case BTSTAT_DATARUN_ERROR:
 1686                         if (bccb->hccb.data_len == 0) {
 1687                                 /*
 1688                                  * At least firmware 4.22, does this
 1689                                  * for a QUEUE FULL condition.
 1690                                  */
 1691                                 bccb->hccb.sdstat = SCSI_STATUS_QUEUE_FULL;
 1692                         } else if (bccb->hccb.data_len < 0) {
 1693                                 csio->ccb_h.status = CAM_DATA_RUN_ERR;
 1694                                 break;
 1695                         }
 1696                         /* FALLTHROUGH */
 1697                 case BTSTAT_NOERROR:
 1698                 case BTSTAT_LINKED_CMD_COMPLETE:
 1699                 case BTSTAT_LINKED_CMD_FLAG_COMPLETE:
 1700                 case BTSTAT_DATAUNDERUN_ERROR:
 1701 
 1702                         csio->scsi_status = bccb->hccb.sdstat;
 1703                         csio->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
 1704                         switch(csio->scsi_status) {
 1705                         case SCSI_STATUS_CHECK_COND:
 1706                         case SCSI_STATUS_CMD_TERMINATED:
 1707                                 csio->ccb_h.status |= CAM_AUTOSNS_VALID;
 1708                                 /* Bounce sense back if necessary */
 1709                                 if (bt->sense_buffers != NULL) {
 1710                                         csio->sense_data =
 1711                                             *btsensevaddr(bt, bccb);
 1712                                 }
 1713                                 break;
 1714                         default:
 1715                                 break;
 1716                         case SCSI_STATUS_OK:
 1717                                 csio->ccb_h.status = CAM_REQ_CMP;
 1718                                 break;
 1719                         }
 1720                         csio->resid = bccb->hccb.data_len;
 1721                         break;
 1722                 case BTSTAT_SELTIMEOUT:
 1723                         csio->ccb_h.status = CAM_SEL_TIMEOUT;
 1724                         break;
 1725                 case BTSTAT_UNEXPECTED_BUSFREE:
 1726                         csio->ccb_h.status = CAM_UNEXP_BUSFREE;
 1727                         break;
 1728                 case BTSTAT_INVALID_PHASE:
 1729                         csio->ccb_h.status = CAM_SEQUENCE_FAIL;
 1730                         break;
 1731                 case BTSTAT_INVALID_ACTION_CODE:
 1732                         panic("%s: Inavlid Action code", bt_name(bt));
 1733                         break;
 1734                 case BTSTAT_INVALID_OPCODE:
 1735                         panic("%s: Inavlid CCB Opcode code", bt_name(bt));
 1736                         break;
 1737                 case BTSTAT_LINKED_CCB_LUN_MISMATCH:
 1738                         /* We don't even support linked commands... */
 1739                         panic("%s: Linked CCB Lun Mismatch", bt_name(bt));
 1740                         break;
 1741                 case BTSTAT_INVALID_CCB_OR_SG_PARAM:
 1742                         panic("%s: Invalid CCB or SG list", bt_name(bt));
 1743                         break;
 1744                 case BTSTAT_AUTOSENSE_FAILED:
 1745                         csio->ccb_h.status = CAM_AUTOSENSE_FAIL;
 1746                         break;
 1747                 case BTSTAT_TAGGED_MSG_REJECTED:
 1748                 {
 1749                         struct ccb_trans_settings neg; 
 1750 #ifdef  CAM_NEW_TRAN_CODE
 1751                         struct ccb_trans_settings_scsi *scsi =
 1752                             &neg.proto_specific.scsi;
 1753 
 1754                         neg.protocol = PROTO_SCSI;
 1755                         neg.protocol_version = SCSI_REV_2;
 1756                         neg.transport = XPORT_SPI;
 1757                         neg.transport_version = 2;
 1758                         scsi->valid = CTS_SCSI_VALID_TQ;
 1759                         scsi->flags = 0;
 1760 #else
 1761 
 1762                         neg.flags = 0;
 1763                         neg.valid = CCB_TRANS_TQ_VALID;
 1764 #endif
 1765                         xpt_print_path(csio->ccb_h.path);
 1766                         printf("refuses tagged commands.  Performing "
 1767                                "non-tagged I/O\n");
 1768                         xpt_setup_ccb(&neg.ccb_h, csio->ccb_h.path,
 1769                                       /*priority*/1); 
 1770                         xpt_async(AC_TRANSFER_NEG, csio->ccb_h.path, &neg);
 1771                         bt->tags_permitted &= ~(0x01 << csio->ccb_h.target_id);
 1772                         csio->ccb_h.status = CAM_MSG_REJECT_REC;
 1773                         break;
 1774                 }
 1775                 case BTSTAT_UNSUPPORTED_MSG_RECEIVED:
 1776                         /*
 1777                          * XXX You would think that this is
 1778                          *     a recoverable error... Hmmm.
 1779                          */
 1780                         csio->ccb_h.status = CAM_REQ_CMP_ERR;
 1781                         break;
 1782                 case BTSTAT_HA_SOFTWARE_ERROR:
 1783                 case BTSTAT_HA_WATCHDOG_ERROR:
 1784                 case BTSTAT_HARDWARE_FAILURE:
 1785                         /* Hardware reset ??? Can we recover ??? */
 1786                         csio->ccb_h.status = CAM_NO_HBA;
 1787                         break;
 1788                 case BTSTAT_TARGET_IGNORED_ATN:
 1789                 case BTSTAT_OTHER_SCSI_BUS_RESET:
 1790                 case BTSTAT_HA_SCSI_BUS_RESET:
 1791                         if ((csio->ccb_h.status & CAM_STATUS_MASK)
 1792                          != CAM_CMD_TIMEOUT)
 1793                                 csio->ccb_h.status = CAM_SCSI_BUS_RESET;
 1794                         break;
 1795                 case BTSTAT_HA_BDR:
 1796                         if ((bccb->flags & BCCB_DEVICE_RESET) == 0)
 1797                                 csio->ccb_h.status = CAM_BDR_SENT;
 1798                         else
 1799                                 csio->ccb_h.status = CAM_CMD_TIMEOUT;
 1800                         break;
 1801                 case BTSTAT_INVALID_RECONNECT:
 1802                 case BTSTAT_ABORT_QUEUE_GENERATED:
 1803                         csio->ccb_h.status = CAM_REQ_TERMIO;
 1804                         break;
 1805                 case BTSTAT_SCSI_PERROR_DETECTED:
 1806                         csio->ccb_h.status = CAM_UNCOR_PARITY;
 1807                         break;
 1808                 }
 1809                 if (csio->ccb_h.status != CAM_REQ_CMP) {
 1810                         xpt_freeze_devq(csio->ccb_h.path, /*count*/1);
 1811                         csio->ccb_h.status |= CAM_DEV_QFRZN;
 1812                 }
 1813                 if ((bccb->flags & BCCB_RELEASE_SIMQ) != 0)
 1814                         ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
 1815                 btfreeccb(bt, bccb);
 1816                 xpt_done(ccb);
 1817                 break;
 1818         case BMBI_OK:
 1819                 /* All completed without incident */
 1820                 ccb->ccb_h.status |= CAM_REQ_CMP;
 1821                 if ((bccb->flags & BCCB_RELEASE_SIMQ) != 0)
 1822                         ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
 1823                 btfreeccb(bt, bccb);
 1824                 xpt_done(ccb);
 1825                 break;
 1826         }
 1827 }
 1828 
 1829 static int
 1830 btreset(struct bt_softc* bt, int hard_reset)
 1831 {
 1832         struct   ccb_hdr *ccb_h;
 1833         u_int    status;
 1834         u_int    timeout;
 1835         u_int8_t reset_type;
 1836 
 1837         if (hard_reset != 0)
 1838                 reset_type = HARD_RESET;
 1839         else
 1840                 reset_type = SOFT_RESET;
 1841         bt_outb(bt, CONTROL_REG, reset_type);
 1842 
 1843         /* Wait 5sec. for Diagnostic start */
 1844         timeout = 5 * 10000;
 1845         while (--timeout) {
 1846                 status = bt_inb(bt, STATUS_REG);
 1847                 if ((status & DIAG_ACTIVE) != 0)
 1848                         break;
 1849                 DELAY(100);
 1850         }
 1851         if (timeout == 0) {
 1852                 if (bootverbose)
 1853                         printf("%s: btreset - Diagnostic Active failed to "
 1854                                 "assert. status = 0x%x\n", bt_name(bt), status);
 1855                 return (ETIMEDOUT);
 1856         }
 1857 
 1858         /* Wait 10sec. for Diagnostic end */
 1859         timeout = 10 * 10000;
 1860         while (--timeout) {
 1861                 status = bt_inb(bt, STATUS_REG);
 1862                 if ((status & DIAG_ACTIVE) == 0)
 1863                         break;
 1864                 DELAY(100);
 1865         }
 1866         if (timeout == 0) {
 1867                 panic("%s: btreset - Diagnostic Active failed to drop. "
 1868                        "status = 0x%x\n", bt_name(bt), status);
 1869                 return (ETIMEDOUT);
 1870         }
 1871 
 1872         /* Wait for the host adapter to become ready or report a failure */
 1873         timeout = 10000;
 1874         while (--timeout) {
 1875                 status = bt_inb(bt, STATUS_REG);
 1876                 if ((status & (DIAG_FAIL|HA_READY|DATAIN_REG_READY)) != 0)
 1877                         break;
 1878                 DELAY(100);
 1879         }
 1880         if (timeout == 0) {
 1881                 printf("%s: btreset - Host adapter failed to come ready. "
 1882                        "status = 0x%x\n", bt_name(bt), status);
 1883                 return (ETIMEDOUT);
 1884         }
 1885 
 1886         /* If the diagnostics failed, tell the user */
 1887         if ((status & DIAG_FAIL) != 0
 1888          || (status & HA_READY) == 0) {
 1889                 printf("%s: btreset - Adapter failed diagnostics\n",
 1890                        bt_name(bt));
 1891 
 1892                 if ((status & DATAIN_REG_READY) != 0)
 1893                         printf("%s: btreset - Host Adapter Error code = 0x%x\n",
 1894                                bt_name(bt), bt_inb(bt, DATAIN_REG));
 1895                 return (ENXIO);
 1896         }
 1897 
 1898         /* If we've allocated mailboxes, initialize them */
 1899         if (bt->init_level > 4)
 1900                 btinitmboxes(bt);
 1901 
 1902         /* If we've attached to the XPT, tell it about the event */
 1903         if (bt->path != NULL)
 1904                 xpt_async(AC_BUS_RESET, bt->path, NULL);
 1905 
 1906         /*
 1907          * Perform completion processing for all outstanding CCBs.
 1908          */
 1909         while ((ccb_h = LIST_FIRST(&bt->pending_ccbs)) != NULL) {
 1910                 struct bt_ccb *pending_bccb;
 1911 
 1912                 pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr;
 1913                 pending_bccb->hccb.btstat = BTSTAT_HA_SCSI_BUS_RESET;
 1914                 btdone(bt, pending_bccb, BMBI_ERROR);
 1915         }
 1916 
 1917         return (0);
 1918 }
 1919 
 1920 /*
 1921  * Send a command to the adapter.
 1922  */
 1923 int
 1924 bt_cmd(struct bt_softc *bt, bt_op_t opcode, u_int8_t *params, u_int param_len,
 1925       u_int8_t *reply_data, u_int reply_len, u_int cmd_timeout)
 1926 {
 1927         u_int   timeout;
 1928         u_int   status;
 1929         u_int   saved_status;
 1930         u_int   intstat;
 1931         u_int   reply_buf_size;
 1932         int     s;
 1933         int     cmd_complete;
 1934         int     error;
 1935 
 1936         /* No data returned to start */
 1937         reply_buf_size = reply_len;
 1938         reply_len = 0;
 1939         intstat = 0;
 1940         cmd_complete = 0;
 1941         saved_status = 0;
 1942         error = 0;
 1943 
 1944         bt->command_cmp = 0;
 1945         /*
 1946          * Wait up to 10 sec. for the adapter to become
 1947          * ready to accept commands.
 1948          */
 1949         timeout = 100000;
 1950         while (--timeout) {
 1951                 status = bt_inb(bt, STATUS_REG);
 1952                 if ((status & HA_READY) != 0
 1953                  && (status & CMD_REG_BUSY) == 0)
 1954                         break;
 1955                 /*
 1956                  * Throw away any pending data which may be
 1957                  * left over from earlier commands that we
 1958                  * timedout on.
 1959                  */
 1960                 if ((status & DATAIN_REG_READY) != 0)
 1961                         (void)bt_inb(bt, DATAIN_REG);
 1962                 DELAY(100);
 1963         }
 1964         if (timeout == 0) {
 1965                 printf("%s: bt_cmd: Timeout waiting for adapter ready, "
 1966                        "status = 0x%x\n", bt_name(bt), status);
 1967                 return (ETIMEDOUT);
 1968         }
 1969 
 1970         /*
 1971          * Send the opcode followed by any necessary parameter bytes.
 1972          */
 1973         bt_outb(bt, COMMAND_REG, opcode);
 1974 
 1975         /*
 1976          * Wait for up to 1sec for each byte of the the
 1977          * parameter list sent to be sent.
 1978          */
 1979         timeout = 10000;
 1980         while (param_len && --timeout) {
 1981                 DELAY(100);
 1982                 s = splcam();
 1983                 status = bt_inb(bt, STATUS_REG);
 1984                 intstat = bt_inb(bt, INTSTAT_REG);
 1985                 splx(s);
 1986         
 1987                 if ((intstat & (INTR_PENDING|CMD_COMPLETE))
 1988                  == (INTR_PENDING|CMD_COMPLETE)) {
 1989                         saved_status = status;
 1990                         cmd_complete = 1;
 1991                         break;
 1992                 }
 1993                 if (bt->command_cmp != 0) {
 1994                         saved_status = bt->latched_status;
 1995                         cmd_complete = 1;
 1996                         break;
 1997                 }
 1998                 if ((status & DATAIN_REG_READY) != 0)
 1999                         break;
 2000                 if ((status & CMD_REG_BUSY) == 0) {
 2001                         bt_outb(bt, COMMAND_REG, *params++);
 2002                         param_len--;
 2003                         timeout = 10000;
 2004                 }
 2005         }
 2006         if (timeout == 0) {
 2007                 printf("%s: bt_cmd: Timeout sending parameters, "
 2008                        "status = 0x%x\n", bt_name(bt), status);
 2009                 cmd_complete = 1;
 2010                 saved_status = status;
 2011                 error = ETIMEDOUT;
 2012         }
 2013 
 2014         /*
 2015          * Wait for the command to complete.
 2016          */
 2017         while (cmd_complete == 0 && --cmd_timeout) {
 2018 
 2019                 s = splcam();
 2020                 status = bt_inb(bt, STATUS_REG);
 2021                 intstat = bt_inb(bt, INTSTAT_REG);
 2022                 /*
 2023                  * It may be that this command was issued with
 2024                  * controller interrupts disabled.  We'll never
 2025                  * get to our command if an incoming mailbox
 2026                  * interrupt is pending, so take care of completed
 2027                  * mailbox commands by calling our interrupt handler.
 2028                  */
 2029                 if ((intstat & (INTR_PENDING|IMB_LOADED))
 2030                  == (INTR_PENDING|IMB_LOADED))
 2031                         bt_intr(bt);
 2032                 splx(s);
 2033 
 2034                 if (bt->command_cmp != 0) {
 2035                         /*
 2036                          * Our interrupt handler saw CMD_COMPLETE
 2037                          * status before we did.
 2038                          */
 2039                         cmd_complete = 1;
 2040                         saved_status = bt->latched_status;
 2041                 } else if ((intstat & (INTR_PENDING|CMD_COMPLETE))
 2042                         == (INTR_PENDING|CMD_COMPLETE)) {
 2043                         /*
 2044                          * Our poll (in case interrupts are blocked)
 2045                          * saw the CMD_COMPLETE interrupt.
 2046                          */
 2047                         cmd_complete = 1;
 2048                         saved_status = status;
 2049                 } else if (opcode == BOP_MODIFY_IO_ADDR
 2050                         && (status & CMD_REG_BUSY) == 0) {
 2051                         /*
 2052                          * The BOP_MODIFY_IO_ADDR does not issue a CMD_COMPLETE,
 2053                          * but it should update the status register.  So, we
 2054                          * consider this command complete when the CMD_REG_BUSY
 2055                          * status clears.
 2056                          */
 2057                         saved_status = status;
 2058                         cmd_complete = 1;
 2059                 } else if ((status & DATAIN_REG_READY) != 0) {
 2060                         u_int8_t data;
 2061 
 2062                         data = bt_inb(bt, DATAIN_REG);
 2063                         if (reply_len < reply_buf_size) {
 2064                                 *reply_data++ = data;
 2065                         } else {
 2066                                 printf("%s: bt_cmd - Discarded reply data byte "
 2067                                        "for opcode 0x%x\n", bt_name(bt),
 2068                                        opcode);
 2069                         }
 2070                         /*
 2071                          * Reset timeout to ensure at least a second
 2072                          * between response bytes.
 2073                          */
 2074                         cmd_timeout = MAX(cmd_timeout, 10000);
 2075                         reply_len++;
 2076 
 2077                 } else if ((opcode == BOP_FETCH_LRAM)
 2078                         && (status & HA_READY) != 0) {
 2079                                 saved_status = status;
 2080                                 cmd_complete = 1;
 2081                 }
 2082                 DELAY(100);
 2083         }
 2084         if (cmd_timeout == 0) {
 2085                 printf("%s: bt_cmd: Timeout waiting for command (%x) "
 2086                        "to complete.\n%s: status = 0x%x, intstat = 0x%x, "
 2087                        "rlen %d\n", bt_name(bt), opcode,
 2088                        bt_name(bt), status, intstat, reply_len);
 2089                 error = (ETIMEDOUT);
 2090         }
 2091 
 2092         /*
 2093          * Clear any pending interrupts.  Block interrupts so our
 2094          * interrupt handler is not re-entered.
 2095          */
 2096         s = splcam();
 2097         bt_intr(bt);
 2098         splx(s);
 2099         
 2100         if (error != 0)
 2101                 return (error);
 2102 
 2103         /*
 2104          * If the command was rejected by the controller, tell the caller.
 2105          */
 2106         if ((saved_status & CMD_INVALID) != 0) {
 2107                 /*
 2108                  * Some early adapters may not recover properly from
 2109                  * an invalid command.  If it appears that the controller
 2110                  * has wedged (i.e. status was not cleared by our interrupt
 2111                  * reset above), perform a soft reset.
 2112                  */
 2113                 if (bootverbose)
 2114                         printf("%s: Invalid Command 0x%x\n", bt_name(bt), 
 2115                                 opcode);
 2116                 DELAY(1000);
 2117                 status = bt_inb(bt, STATUS_REG);
 2118                 if ((status & (CMD_INVALID|STATUS_REG_RSVD|DATAIN_REG_READY|
 2119                               CMD_REG_BUSY|DIAG_FAIL|DIAG_ACTIVE)) != 0
 2120                  || (status & (HA_READY|INIT_REQUIRED))
 2121                   != (HA_READY|INIT_REQUIRED)) {
 2122                         btreset(bt, /*hard_reset*/FALSE);
 2123                 }
 2124                 return (EINVAL);
 2125         }
 2126 
 2127         if (param_len > 0) {
 2128                 /* The controller did not accept the full argument list */
 2129                 return (E2BIG);
 2130         }
 2131 
 2132         if (reply_len != reply_buf_size) {
 2133                 /* Too much or too little data received */
 2134                 return (EMSGSIZE);
 2135         }
 2136 
 2137         /* We were successful */
 2138         return (0);
 2139 }
 2140 
 2141 static int
 2142 btinitmboxes(struct bt_softc *bt) {
 2143         init_32b_mbox_params_t init_mbox;
 2144         int error;
 2145 
 2146         bzero(bt->in_boxes, sizeof(bt_mbox_in_t) * bt->num_boxes);
 2147         bzero(bt->out_boxes, sizeof(bt_mbox_out_t) * bt->num_boxes);
 2148         bt->cur_inbox = bt->in_boxes;
 2149         bt->last_inbox = bt->in_boxes + bt->num_boxes - 1;
 2150         bt->cur_outbox = bt->out_boxes;
 2151         bt->last_outbox = bt->out_boxes + bt->num_boxes - 1;
 2152 
 2153         /* Tell the adapter about them */
 2154         init_mbox.num_boxes = bt->num_boxes;
 2155         init_mbox.base_addr[0] = bt->mailbox_physbase & 0xFF;
 2156         init_mbox.base_addr[1] = (bt->mailbox_physbase >> 8) & 0xFF;
 2157         init_mbox.base_addr[2] = (bt->mailbox_physbase >> 16) & 0xFF;
 2158         init_mbox.base_addr[3] = (bt->mailbox_physbase >> 24) & 0xFF;
 2159         error = bt_cmd(bt, BOP_INITIALIZE_32BMBOX, (u_int8_t *)&init_mbox,
 2160                        /*parmlen*/sizeof(init_mbox), /*reply_buf*/NULL,
 2161                        /*reply_len*/0, DEFAULT_CMD_TIMEOUT);
 2162 
 2163         if (error != 0)
 2164                 printf("btinitmboxes: Initialization command failed\n");
 2165         else if (bt->strict_rr != 0) {
 2166                 /*
 2167                  * If the controller supports
 2168                  * strict round robin mode,
 2169                  * enable it
 2170                  */
 2171                 u_int8_t param;
 2172 
 2173                 param = 0;
 2174                 error = bt_cmd(bt, BOP_ENABLE_STRICT_RR, &param, 1,
 2175                                /*reply_buf*/NULL, /*reply_len*/0,
 2176                                DEFAULT_CMD_TIMEOUT);
 2177 
 2178                 if (error != 0) {
 2179                         printf("btinitmboxes: Unable to enable strict RR\n");
 2180                         error = 0;
 2181                 } else if (bootverbose) {
 2182                         printf("%s: Using Strict Round Robin Mailbox Mode\n",
 2183                                bt_name(bt));
 2184                 }
 2185         }
 2186         
 2187         return (error);
 2188 }
 2189 
 2190 /*
 2191  * Update the XPT's idea of the negotiated transfer
 2192  * parameters for a particular target.
 2193  */
 2194 static void
 2195 btfetchtransinfo(struct bt_softc *bt, struct ccb_trans_settings *cts)
 2196 {
 2197         setup_data_t    setup_info;
 2198         u_int           target;
 2199         u_int           targ_offset;
 2200         u_int           targ_mask;
 2201         u_int           sync_period;
 2202         u_int           sync_offset;
 2203         u_int           bus_width;
 2204         int             error;
 2205         u_int8_t        param;
 2206         targ_syncinfo_t sync_info;
 2207 #ifdef  CAM_NEW_TRAN_CODE
 2208         struct ccb_trans_settings_scsi *scsi =
 2209             &cts->proto_specific.scsi;
 2210         struct ccb_trans_settings_spi *spi =
 2211             &cts->xport_specific.spi;
 2212 
 2213         spi->valid = 0;
 2214         scsi->valid = 0;
 2215 #else
 2216 
 2217         cts->valid = 0;
 2218 #endif
 2219 
 2220         target = cts->ccb_h.target_id;
 2221         targ_offset = (target & 0x7);
 2222         targ_mask = (0x01 << targ_offset);
 2223 
 2224         /*
 2225          * Inquire Setup Information.  This command retreives the
 2226          * Wide negotiation status for recent adapters as well as
 2227          * the sync info for older models.
 2228          */
 2229         param = sizeof(setup_info);
 2230         error = bt_cmd(bt, BOP_INQUIRE_SETUP_INFO, &param, /*paramlen*/1,
 2231                        (u_int8_t*)&setup_info, sizeof(setup_info),
 2232                        DEFAULT_CMD_TIMEOUT);
 2233 
 2234         if (error != 0) {
 2235                 printf("%s: btfetchtransinfo - Inquire Setup Info Failed %x\n",
 2236                        bt_name(bt), error);
 2237                 return;
 2238         }
 2239 
 2240         sync_info = (target < 8) ? setup_info.low_syncinfo[targ_offset]
 2241                                  : setup_info.high_syncinfo[targ_offset];
 2242 
 2243         if (sync_info.sync == 0)
 2244                 sync_offset = 0;
 2245         else
 2246                 sync_offset = sync_info.offset;
 2247 
 2248 
 2249         bus_width = MSG_EXT_WDTR_BUS_8_BIT;
 2250         if (strcmp(bt->firmware_ver, "5.06L") >= 0) {
 2251                 u_int wide_active;
 2252 
 2253                 wide_active =
 2254                     (target < 8) ? (setup_info.low_wide_active & targ_mask)
 2255                                  : (setup_info.high_wide_active & targ_mask);
 2256 
 2257                 if (wide_active)
 2258                         bus_width = MSG_EXT_WDTR_BUS_16_BIT;
 2259         } else if ((bt->wide_permitted & targ_mask) != 0) {
 2260                 struct ccb_getdev cgd;
 2261 
 2262                 /*
 2263                  * Prior to rev 5.06L, wide status isn't provided,
 2264                  * so we "guess" that wide transfers are in effect
 2265                  * if the user settings allow for wide and the inquiry
 2266                  * data for the device indicates that it can handle
 2267                  * wide transfers.
 2268                  */
 2269                 xpt_setup_ccb(&cgd.ccb_h, cts->ccb_h.path, /*priority*/1);
 2270                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 2271                 xpt_action((union ccb *)&cgd);
 2272                 if ((cgd.ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP
 2273                  && (cgd.inq_data.flags & SID_WBus16) != 0)
 2274                         bus_width = MSG_EXT_WDTR_BUS_16_BIT;
 2275         }
 2276 
 2277         if (bt->firmware_ver[0] >= '3') {
 2278                 /*
 2279                  * For adapters that can do fast or ultra speeds,
 2280                  * use the more exact Target Sync Information command.
 2281                  */
 2282                 target_sync_info_data_t sync_info;
 2283 
 2284                 param = sizeof(sync_info);
 2285                 error = bt_cmd(bt, BOP_TARG_SYNC_INFO, &param, /*paramlen*/1,
 2286                                (u_int8_t*)&sync_info, sizeof(sync_info),
 2287                                DEFAULT_CMD_TIMEOUT);
 2288                 
 2289                 if (error != 0) {
 2290                         printf("%s: btfetchtransinfo - Inquire Sync "
 2291                                "Info Failed 0x%x\n", bt_name(bt), error);
 2292                         return;
 2293                 }
 2294                 sync_period = sync_info.sync_rate[target] * 100;
 2295         } else {
 2296                 sync_period = 2000 + (500 * sync_info.period);
 2297         }
 2298 
 2299 #ifdef  CAM_NEW_TRAN_CODE
 2300         cts->protocol = PROTO_SCSI;
 2301         cts->protocol_version = SCSI_REV_2;
 2302         cts->transport = XPORT_SPI;
 2303         cts->transport_version = 2;
 2304 
 2305         spi->sync_period = sync_period;
 2306         spi->valid |= CTS_SPI_VALID_SYNC_RATE;
 2307         spi->sync_offset = sync_offset;
 2308         spi->valid |= CTS_SPI_VALID_SYNC_OFFSET;
 2309 
 2310         spi->valid |= CTS_SPI_VALID_BUS_WIDTH;
 2311         spi->bus_width = bus_width;
 2312 
 2313         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
 2314                 scsi->valid = CTS_SCSI_VALID_TQ;
 2315                 spi->valid |= CTS_SPI_VALID_DISC;
 2316         } else
 2317                 scsi->valid = 0;
 2318         
 2319 #else
 2320         /* Convert ns value to standard SCSI sync rate */
 2321         if (cts->sync_offset != 0)
 2322                 cts->sync_period = scsi_calc_syncparam(sync_period);
 2323         else
 2324                 cts->sync_period = 0;
 2325         cts->sync_offset = sync_offset;
 2326         cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
 2327         
 2328         cts->valid = CCB_TRANS_SYNC_RATE_VALID
 2329                    | CCB_TRANS_SYNC_OFFSET_VALID
 2330                    | CCB_TRANS_BUS_WIDTH_VALID;
 2331 
 2332 #endif
 2333         xpt_async(AC_TRANSFER_NEG, cts->ccb_h.path, cts);
 2334 }
 2335 
 2336 static void
 2337 btmapmboxes(void *arg, bus_dma_segment_t *segs, int nseg, int error)
 2338 {
 2339         struct bt_softc* bt;
 2340 
 2341         bt = (struct bt_softc*)arg;
 2342         bt->mailbox_physbase = segs->ds_addr;
 2343 }
 2344 
 2345 static void
 2346 btmapccbs(void *arg, bus_dma_segment_t *segs, int nseg, int error)
 2347 {
 2348         struct bt_softc* bt;
 2349 
 2350         bt = (struct bt_softc*)arg;
 2351         bt->bt_ccb_physbase = segs->ds_addr;
 2352 }
 2353 
 2354 static void
 2355 btmapsgs(void *arg, bus_dma_segment_t *segs, int nseg, int error)
 2356 {
 2357 
 2358         struct bt_softc* bt;
 2359 
 2360         bt = (struct bt_softc*)arg;
 2361         SLIST_FIRST(&bt->sg_maps)->sg_physaddr = segs->ds_addr;
 2362 }
 2363 
 2364 static void
 2365 btpoll(struct cam_sim *sim)
 2366 {
 2367         bt_intr(cam_sim_softc(sim));
 2368 }
 2369 
 2370 void
 2371 bttimeout(void *arg)
 2372 {
 2373         struct bt_ccb   *bccb;
 2374         union  ccb      *ccb;
 2375         struct bt_softc *bt;
 2376         int              s;
 2377 
 2378         bccb = (struct bt_ccb *)arg;
 2379         ccb = bccb->ccb;
 2380         bt = (struct bt_softc *)ccb->ccb_h.ccb_bt_ptr;
 2381         xpt_print_path(ccb->ccb_h.path);
 2382         printf("CCB %p - timed out\n", (void *)bccb);
 2383 
 2384         s = splcam();
 2385 
 2386         if ((bccb->flags & BCCB_ACTIVE) == 0) {
 2387                 xpt_print_path(ccb->ccb_h.path);
 2388                 printf("CCB %p - timed out CCB already completed\n",
 2389                        (void *)bccb);
 2390                 splx(s);
 2391                 return;
 2392         }
 2393 
 2394         /*
 2395          * In order to simplify the recovery process, we ask the XPT
 2396          * layer to halt the queue of new transactions and we traverse
 2397          * the list of pending CCBs and remove their timeouts. This
 2398          * means that the driver attempts to clear only one error
 2399          * condition at a time.  In general, timeouts that occur
 2400          * close together are related anyway, so there is no benefit
 2401          * in attempting to handle errors in parrallel.  Timeouts will
 2402          * be reinstated when the recovery process ends.
 2403          */
 2404         if ((bccb->flags & BCCB_DEVICE_RESET) == 0) {
 2405                 struct ccb_hdr *ccb_h;
 2406 
 2407                 if ((bccb->flags & BCCB_RELEASE_SIMQ) == 0) {
 2408                         xpt_freeze_simq(bt->sim, /*count*/1);
 2409                         bccb->flags |= BCCB_RELEASE_SIMQ;
 2410                 }
 2411 
 2412                 ccb_h = LIST_FIRST(&bt->pending_ccbs);
 2413                 while (ccb_h != NULL) {
 2414                         struct bt_ccb *pending_bccb;
 2415 
 2416                         pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr;
 2417                         untimeout(bttimeout, pending_bccb, ccb_h->timeout_ch);
 2418                         ccb_h = LIST_NEXT(ccb_h, sim_links.le);
 2419                 }
 2420         }
 2421 
 2422         if ((bccb->flags & BCCB_DEVICE_RESET) != 0
 2423          || bt->cur_outbox->action_code != BMBO_FREE
 2424          || ((bccb->hccb.tag_enable == TRUE)
 2425           && (bt->firmware_ver[0] < '5'))) {
 2426                 /*
 2427                  * Try a full host adapter/SCSI bus reset.
 2428                  * We do this only if we have already attempted
 2429                  * to clear the condition with a BDR, or we cannot
 2430                  * attempt a BDR for lack of mailbox resources
 2431                  * or because of faulty firmware.  It turns out
 2432                  * that firmware versions prior to 5.xx treat BDRs
 2433                  * as untagged commands that cannot be sent until
 2434                  * all outstanding tagged commands have been processed.
 2435                  * This makes it somewhat difficult to use a BDR to
 2436                  * clear up a problem with an uncompleted tagged command.
 2437                  */
 2438                 ccb->ccb_h.status = CAM_CMD_TIMEOUT;
 2439                 btreset(bt, /*hardreset*/TRUE);
 2440                 printf("%s: No longer in timeout\n", bt_name(bt));
 2441         } else {
 2442                 /*    
 2443                  * Send a Bus Device Reset message:
 2444                  * The target that is holding up the bus may not
 2445                  * be the same as the one that triggered this timeout
 2446                  * (different commands have different timeout lengths),
 2447                  * but we have no way of determining this from our
 2448                  * timeout handler.  Our strategy here is to queue a
 2449                  * BDR message to the target of the timed out command.
 2450                  * If this fails, we'll get another timeout 2 seconds
 2451                  * later which will attempt a bus reset.
 2452                  */
 2453                 bccb->flags |= BCCB_DEVICE_RESET;
 2454                 ccb->ccb_h.timeout_ch =
 2455                     timeout(bttimeout, (caddr_t)bccb, 2 * hz);
 2456 
 2457                 bt->recovery_bccb->hccb.opcode = INITIATOR_BUS_DEV_RESET;
 2458 
 2459                 /* No Data Transfer */
 2460                 bt->recovery_bccb->hccb.datain = TRUE;
 2461                 bt->recovery_bccb->hccb.dataout = TRUE;
 2462                 bt->recovery_bccb->hccb.btstat = 0;
 2463                 bt->recovery_bccb->hccb.sdstat = 0;
 2464                 bt->recovery_bccb->hccb.target_id = ccb->ccb_h.target_id;
 2465 
 2466                 /* Tell the adapter about this command */
 2467                 bt->cur_outbox->ccb_addr = btccbvtop(bt, bt->recovery_bccb);
 2468                 bt->cur_outbox->action_code = BMBO_START;
 2469                 bt_outb(bt, COMMAND_REG, BOP_START_MBOX);
 2470                 btnextoutbox(bt);
 2471         }
 2472 
 2473         splx(s);
 2474 }
 2475 

Cache object: 2a3a8e8a952462fafaf0f3b36411e492


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