The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/twa/tw_osl_cam.c

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    1 /*
    2  * Copyright (c) 2004-07 Applied Micro Circuits Corporation.
    3  * Copyright (c) 2004-05 Vinod Kashyap.
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  *
   27  *      $FreeBSD: releng/11.1/sys/dev/twa/tw_osl_cam.c 315812 2017-03-23 06:40:20Z mav $
   28  */
   29 
   30 /*
   31  * AMCC'S 3ware driver for 9000 series storage controllers.
   32  *
   33  * Author: Vinod Kashyap
   34  * Modifications by: Adam Radford
   35  * Modifications by: Manjunath Ranganathaiah
   36  */
   37 
   38 
   39 /*
   40  * FreeBSD CAM related functions.
   41  */
   42 
   43 
   44 #include <dev/twa/tw_osl_includes.h>
   45 
   46 #include <cam/cam.h>
   47 #include <cam/cam_ccb.h>
   48 #include <cam/cam_sim.h>
   49 #include <cam/cam_xpt_sim.h>
   50 #include <cam/cam_debug.h>
   51 #include <cam/cam_periph.h>
   52 
   53 #include <cam/scsi/scsi_all.h>
   54 #include <cam/scsi/scsi_message.h>
   55 
   56 static TW_VOID  twa_action(struct cam_sim *sim, union ccb *ccb);
   57 static TW_VOID  twa_poll(struct cam_sim *sim);
   58 
   59 static TW_INT32 tw_osli_execute_scsi(struct tw_osli_req_context *req,
   60         union ccb *ccb);
   61 
   62 
   63 
   64 /*
   65  * Function name:       tw_osli_cam_attach
   66  * Description:         Attaches the driver to CAM.
   67  *
   68  * Input:               sc      -- ptr to OSL internal ctlr context
   69  * Output:              None
   70  * Return value:        0       -- success
   71  *                      non-zero-- failure
   72  */
   73 TW_INT32
   74 tw_osli_cam_attach(struct twa_softc *sc)
   75 {
   76         struct cam_devq         *devq;
   77 
   78         tw_osli_dbg_dprintf(3, sc, "entered");
   79 
   80         /*
   81          * Create the device queue for our SIM.
   82          */
   83         if ((devq = cam_simq_alloc(TW_OSLI_MAX_NUM_IOS)) == NULL) {
   84                 tw_osli_printf(sc, "error = %d",
   85                         TW_CL_SEVERITY_ERROR_STRING,
   86                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
   87                         0x2100,
   88                         "Failed to create SIM device queue",
   89                         ENOMEM);
   90                 return(ENOMEM);
   91         }
   92 
   93         /*
   94          * Create a SIM entry.  Though we can support TW_OSLI_MAX_NUM_REQUESTS
   95          * simultaneous requests, we claim to be able to handle only
   96          * TW_OSLI_MAX_NUM_IOS (two less), so that we always have a request
   97          * packet available to service ioctls and AENs.
   98          */
   99         tw_osli_dbg_dprintf(3, sc, "Calling cam_sim_alloc");
  100         sc->sim = cam_sim_alloc(twa_action, twa_poll, "twa", sc,
  101                         device_get_unit(sc->bus_dev), sc->sim_lock,
  102                         TW_OSLI_MAX_NUM_IOS, 1, devq);
  103         if (sc->sim == NULL) {
  104                 cam_simq_free(devq);
  105                 tw_osli_printf(sc, "error = %d",
  106                         TW_CL_SEVERITY_ERROR_STRING,
  107                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
  108                         0x2101,
  109                         "Failed to create a SIM entry",
  110                         ENOMEM);
  111                 return(ENOMEM);
  112         }
  113 
  114         /*
  115          * Register the bus.
  116          */
  117         tw_osli_dbg_dprintf(3, sc, "Calling xpt_bus_register");
  118         mtx_lock(sc->sim_lock);
  119         if (xpt_bus_register(sc->sim, sc->bus_dev, 0) != CAM_SUCCESS) {
  120                 cam_sim_free(sc->sim, TRUE);
  121                 sc->sim = NULL; /* so cam_detach will not try to free it */
  122                 tw_osli_printf(sc, "error = %d",
  123                         TW_CL_SEVERITY_ERROR_STRING,
  124                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
  125                         0x2102,
  126                         "Failed to register the bus",
  127                         ENXIO);
  128                 mtx_unlock(sc->sim_lock);
  129                 return(ENXIO);
  130         }
  131 
  132         tw_osli_dbg_dprintf(3, sc, "Calling xpt_create_path");
  133         if (xpt_create_path(&sc->path, NULL,
  134                                 cam_sim_path(sc->sim),
  135                                 CAM_TARGET_WILDCARD,
  136                                 CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
  137                 xpt_bus_deregister(cam_sim_path (sc->sim));
  138                 /* Passing TRUE to cam_sim_free will free the devq as well. */
  139                 cam_sim_free(sc->sim, TRUE);
  140                 tw_osli_printf(sc, "error = %d",
  141                         TW_CL_SEVERITY_ERROR_STRING,
  142                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
  143                         0x2103,
  144                         "Failed to create path",
  145                         ENXIO);
  146                 mtx_unlock(sc->sim_lock);
  147                 return(ENXIO);
  148         }
  149         mtx_unlock(sc->sim_lock);
  150 
  151         tw_osli_dbg_dprintf(3, sc, "exiting");
  152         return(0);
  153 }
  154 
  155 
  156 
  157 /*
  158  * Function name:       tw_osli_cam_detach
  159  * Description:         Detaches the driver from CAM.
  160  *
  161  * Input:               sc      -- ptr to OSL internal ctlr context
  162  * Output:              None
  163  * Return value:        None
  164  */
  165 TW_VOID
  166 tw_osli_cam_detach(struct twa_softc *sc)
  167 {
  168         tw_osli_dbg_dprintf(3, sc, "entered");
  169 
  170         mtx_lock(sc->sim_lock);
  171            
  172         if (sc->path)
  173                 xpt_free_path(sc->path);
  174         if (sc->sim) {
  175                 xpt_bus_deregister(cam_sim_path(sc->sim));
  176                 /* Passing TRUE to cam_sim_free will free the devq as well. */
  177                 cam_sim_free(sc->sim, TRUE);
  178         }
  179         /* It's ok have 1 hold count while destroying the mutex */
  180         mtx_destroy(sc->sim_lock);
  181 }
  182 
  183 
  184 
  185 /*
  186  * Function name:       tw_osli_execute_scsi
  187  * Description:         Build a fw cmd, based on a CAM style ccb, and
  188  *                      send it down.
  189  *
  190  * Input:               req     -- ptr to OSL internal request context
  191  *                      ccb     -- ptr to CAM style ccb
  192  * Output:              None
  193  * Return value:        0       -- success
  194  *                      non-zero-- failure
  195  */
  196 TW_INT32
  197 tw_osli_execute_scsi(struct tw_osli_req_context *req, union ccb *ccb)
  198 {
  199         struct twa_softc                *sc = req->ctlr;
  200         struct tw_cl_req_packet         *req_pkt;
  201         struct tw_cl_scsi_req_packet    *scsi_req;
  202         struct ccb_hdr                  *ccb_h = &(ccb->ccb_h);
  203         struct ccb_scsiio               *csio = &(ccb->csio);
  204         TW_INT32                        error;
  205 
  206         tw_osli_dbg_dprintf(10, sc, "SCSI I/O request 0x%x",
  207                 csio->cdb_io.cdb_bytes[0]);
  208 
  209         if (ccb_h->target_id >= TW_CL_MAX_NUM_UNITS) {
  210                 tw_osli_dbg_dprintf(3, sc, "Invalid target. PTL = %x %x %jx",
  211                         ccb_h->path_id, ccb_h->target_id,
  212                         (uintmax_t)ccb_h->target_lun);
  213                 ccb_h->status |= CAM_TID_INVALID;
  214                 xpt_done(ccb);
  215                 return(1);
  216         }
  217         if (ccb_h->target_lun >= TW_CL_MAX_NUM_LUNS) {
  218                 tw_osli_dbg_dprintf(3, sc, "Invalid lun. PTL = %x %x %jx",
  219                         ccb_h->path_id, ccb_h->target_id,
  220                         (uintmax_t)ccb_h->target_lun);
  221                 ccb_h->status |= CAM_LUN_INVALID;
  222                 xpt_done(ccb);
  223                 return(1);
  224         }
  225 
  226         if(ccb_h->flags & CAM_CDB_PHYS) {
  227                 tw_osli_printf(sc, "",
  228                         TW_CL_SEVERITY_ERROR_STRING,
  229                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
  230                         0x2105,
  231                         "Physical CDB address!");
  232                 ccb_h->status = CAM_REQ_INVALID;
  233                 xpt_done(ccb);
  234                 return(1);
  235         }
  236 
  237         /*
  238          * We are going to work on this request.  Mark it as enqueued (though
  239          * we don't actually queue it...)
  240          */
  241         ccb_h->status |= CAM_SIM_QUEUED;
  242 
  243         if((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
  244                 if(ccb_h->flags & CAM_DIR_IN)
  245                         req->flags |= TW_OSLI_REQ_FLAGS_DATA_IN;
  246                 else
  247                         req->flags |= TW_OSLI_REQ_FLAGS_DATA_OUT;
  248         }
  249 
  250         /* Build the CL understood request packet for SCSI cmds. */
  251         req_pkt = &req->req_pkt;
  252         req_pkt->status = 0;
  253         req_pkt->tw_osl_callback = tw_osl_complete_io;
  254         scsi_req = &(req_pkt->gen_req_pkt.scsi_req);
  255         scsi_req->unit = ccb_h->target_id;
  256         scsi_req->lun = ccb_h->target_lun;
  257         scsi_req->sense_len = 0;
  258         scsi_req->sense_data = (TW_UINT8 *)(&csio->sense_data);
  259         scsi_req->scsi_status = 0;
  260         if(ccb_h->flags & CAM_CDB_POINTER)
  261                 scsi_req->cdb = csio->cdb_io.cdb_ptr;
  262         else
  263                 scsi_req->cdb = csio->cdb_io.cdb_bytes;
  264         scsi_req->cdb_len = csio->cdb_len;
  265 
  266         if (csio->dxfer_len > TW_CL_MAX_IO_SIZE) {
  267                 tw_osli_printf(sc, "size = %d",
  268                         TW_CL_SEVERITY_ERROR_STRING,
  269                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
  270                         0x2106,
  271                         "I/O size too big",
  272                         csio->dxfer_len);
  273                 ccb_h->status = CAM_REQ_TOO_BIG;
  274                 ccb_h->status &= ~CAM_SIM_QUEUED;
  275                 xpt_done(ccb);
  276                 return(1);
  277         }
  278         if ((ccb_h->flags & CAM_DATA_MASK) == CAM_DATA_VADDR) {
  279                 if ((req->length = csio->dxfer_len) != 0) {
  280                         req->data = csio->data_ptr;
  281                         scsi_req->sgl_entries = 1;
  282                 }
  283         } else
  284                 req->flags |= TW_OSLI_REQ_FLAGS_CCB;
  285         req->deadline = tw_osl_get_local_time() + (ccb_h->timeout / 1000);
  286 
  287         /*
  288          * twa_map_load_data_callback will fill in the SGL,
  289          * and submit the I/O.
  290          */
  291         error = tw_osli_map_request(req);
  292         if ((error) && (req->flags & TW_OSLI_REQ_FLAGS_FAILED)) {
  293                 req->deadline = 0;
  294                 ccb_h->status = CAM_REQ_CMP_ERR;
  295                 ccb_h->status &= ~CAM_SIM_QUEUED;
  296                 xpt_done(ccb);
  297         }
  298         return(error);
  299 }
  300 
  301 
  302 
  303 /*
  304  * Function name:       twa_action
  305  * Description:         Driver entry point for CAM's use.
  306  *
  307  * Input:               sim     -- sim corresponding to the ctlr
  308  *                      ccb     -- ptr to CAM request
  309  * Output:              None
  310  * Return value:        None
  311  */
  312 TW_VOID
  313 twa_action(struct cam_sim *sim, union ccb *ccb)
  314 {
  315         struct twa_softc        *sc = (struct twa_softc *)cam_sim_softc(sim);
  316         struct ccb_hdr          *ccb_h = &(ccb->ccb_h);
  317 
  318         switch (ccb_h->func_code) {
  319         case XPT_SCSI_IO:       /* SCSI I/O */
  320         {
  321                 struct tw_osli_req_context      *req;
  322 
  323                 req = tw_osli_get_request(sc);
  324                 if (req == NULL) {
  325                         tw_osli_dbg_dprintf(2, sc, "Cannot get request pkt.");
  326                         /*
  327                          * Freeze the simq to maintain ccb ordering.  The next
  328                          * ccb that gets completed will unfreeze the simq.
  329                          */
  330                         ccb_h->status &= ~CAM_SIM_QUEUED;
  331                         ccb_h->status |= CAM_REQUEUE_REQ;
  332                         xpt_done(ccb);
  333                         break;
  334                 }
  335 
  336                 if ((tw_cl_is_reset_needed(&(req->ctlr->ctlr_handle)))) {
  337                         ccb_h->status &= ~CAM_SIM_QUEUED;
  338                         ccb_h->status |= CAM_REQUEUE_REQ;
  339                         xpt_done(ccb);
  340                         tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q);
  341                         break;
  342                 }
  343 
  344                 req->req_handle.osl_req_ctxt = req;
  345                 req->req_handle.is_io = TW_CL_TRUE;
  346                 req->orig_req = ccb;
  347                 if (tw_osli_execute_scsi(req, ccb))
  348                         tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q);
  349                 break;
  350         }
  351 
  352         case XPT_ABORT:
  353                 tw_osli_dbg_dprintf(2, sc, "Abort request.");
  354                 ccb_h->status = CAM_UA_ABORT;
  355                 xpt_done(ccb);
  356                 break;
  357 
  358         case XPT_RESET_BUS:
  359                 tw_cl_create_event(&(sc->ctlr_handle), TW_CL_FALSE,
  360                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
  361                         0x2108, 0x3, TW_CL_SEVERITY_INFO_STRING,
  362                         "Received Reset Bus request from CAM",
  363                         " ");
  364 
  365                 tw_cl_set_reset_needed(&(sc->ctlr_handle));
  366                 ccb_h->status = CAM_REQ_CMP;
  367                 xpt_done(ccb);
  368                 break;
  369 
  370         case XPT_SET_TRAN_SETTINGS:
  371                 tw_osli_dbg_dprintf(3, sc, "XPT_SET_TRAN_SETTINGS");
  372 
  373                 /*
  374                  * This command is not supported, since it's very specific
  375                  * to SCSI, and we are doing ATA.
  376                  */
  377                 ccb_h->status = CAM_FUNC_NOTAVAIL;
  378                 xpt_done(ccb);
  379                 break;
  380 
  381         case XPT_GET_TRAN_SETTINGS: 
  382         {
  383                 struct ccb_trans_settings       *cts = &ccb->cts;
  384                 struct ccb_trans_settings_scsi *scsi =
  385                     &cts->proto_specific.scsi;
  386                 struct ccb_trans_settings_spi *spi =
  387                     &cts->xport_specific.spi;
  388 
  389                 cts->protocol = PROTO_SCSI;
  390                 cts->protocol_version = SCSI_REV_2;
  391                 cts->transport = XPORT_SPI;
  392                 cts->transport_version = 2;
  393 
  394                 spi->valid = CTS_SPI_VALID_DISC;
  395                 spi->flags = CTS_SPI_FLAGS_DISC_ENB;
  396                 scsi->valid = CTS_SCSI_VALID_TQ;
  397                 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
  398                 tw_osli_dbg_dprintf(3, sc, "XPT_GET_TRAN_SETTINGS");
  399                 ccb_h->status = CAM_REQ_CMP;
  400                 xpt_done(ccb);
  401                 break;
  402         }
  403 
  404         case XPT_CALC_GEOMETRY:
  405                 tw_osli_dbg_dprintf(3, sc, "XPT_CALC_GEOMETRY");
  406                 cam_calc_geometry(&ccb->ccg, 1/* extended */);
  407                 xpt_done(ccb);
  408                 break;
  409 
  410         case XPT_PATH_INQ:    /* Path inquiry -- get twa properties */
  411         {
  412                 struct ccb_pathinq      *path_inq = &ccb->cpi;
  413 
  414                 tw_osli_dbg_dprintf(3, sc, "XPT_PATH_INQ request");
  415 
  416                 path_inq->version_num = 1;
  417                 path_inq->hba_inquiry = 0;
  418                 path_inq->target_sprt = 0;
  419                 path_inq->hba_misc = 0;
  420                 path_inq->hba_eng_cnt = 0;
  421                 path_inq->max_target = TW_CL_MAX_NUM_UNITS;
  422                 path_inq->max_lun = TW_CL_MAX_NUM_LUNS - 1;
  423                 path_inq->unit_number = cam_sim_unit(sim);
  424                 path_inq->bus_id = cam_sim_bus(sim);
  425                 path_inq->initiator_id = TW_CL_MAX_NUM_UNITS;
  426                 path_inq->base_transfer_speed = 100000;
  427                 strlcpy(path_inq->sim_vid, "FreeBSD", SIM_IDLEN);
  428                 strlcpy(path_inq->hba_vid, "3ware", HBA_IDLEN);
  429                 strlcpy(path_inq->dev_name, cam_sim_name(sim), DEV_IDLEN);
  430                 path_inq->transport = XPORT_SPI;
  431                 path_inq->transport_version = 2;
  432                 path_inq->protocol = PROTO_SCSI;
  433                 path_inq->protocol_version = SCSI_REV_2;
  434                 path_inq->maxio = TW_CL_MAX_IO_SIZE;
  435                 ccb_h->status = CAM_REQ_CMP;
  436                 xpt_done(ccb);
  437                 break;
  438         }
  439 
  440         default:
  441                 tw_osli_dbg_dprintf(3, sc, "func_code = %x", ccb_h->func_code);
  442                 ccb_h->status = CAM_REQ_INVALID;
  443                 xpt_done(ccb);
  444                 break;
  445         }
  446 }
  447 
  448 
  449 
  450 /*
  451  * Function name:       twa_poll
  452  * Description:         Driver entry point called when interrupts are not
  453  *                      available.
  454  *
  455  * Input:               sim     -- sim corresponding to the controller
  456  * Output:              None
  457  * Return value:        None
  458  */
  459 TW_VOID
  460 twa_poll(struct cam_sim *sim)
  461 {
  462         struct twa_softc *sc = (struct twa_softc *)(cam_sim_softc(sim));
  463 
  464         tw_osli_dbg_dprintf(3, sc, "entering; sc = %p", sc);
  465         tw_cl_interrupt(&(sc->ctlr_handle));
  466         tw_osli_dbg_dprintf(3, sc, "exiting; sc = %p", sc);
  467 }
  468 
  469 
  470 
  471 /*
  472  * Function name:       tw_osli_request_bus_scan
  473  * Description:         Requests CAM for a scan of the bus.
  474  *
  475  * Input:               sc      -- ptr to per ctlr structure
  476  * Output:              None
  477  * Return value:        0       -- success
  478  *                      non-zero-- failure
  479  */
  480 TW_INT32
  481 tw_osli_request_bus_scan(struct twa_softc *sc)
  482 {
  483         union ccb       *ccb;
  484 
  485         tw_osli_dbg_dprintf(3, sc, "entering");
  486 
  487         /* If we get here before sc->sim is initialized, return an error. */
  488         if (!(sc->sim))
  489                 return(ENXIO);
  490         if ((ccb = xpt_alloc_ccb()) == NULL)
  491                 return(ENOMEM);
  492         mtx_lock(sc->sim_lock);
  493         if (xpt_create_path(&ccb->ccb_h.path, NULL, cam_sim_path(sc->sim),
  494             CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
  495                 xpt_free_ccb(ccb);
  496                 mtx_unlock(sc->sim_lock);
  497                 return(EIO);
  498         }
  499 
  500         xpt_rescan(ccb);
  501         mtx_unlock(sc->sim_lock);
  502         return(0);
  503 }
  504 
  505 
  506 
  507 /*
  508  * Function name:       tw_osli_disallow_new_requests
  509  * Description:         Calls the appropriate CAM function, so as to freeze
  510  *                      the flow of new requests from CAM to this controller.
  511  *
  512  * Input:               sc      -- ptr to OSL internal ctlr context
  513  *                      req_handle -- ptr to request handle sent by OSL.
  514  * Output:              None
  515  * Return value:        None
  516  */
  517 TW_VOID
  518 tw_osli_disallow_new_requests(struct twa_softc *sc,
  519         struct tw_cl_req_handle *req_handle)
  520 {
  521         /* Only freeze/release the simq for IOs */
  522         if (req_handle->is_io) {
  523                 struct tw_osli_req_context      *req = req_handle->osl_req_ctxt;
  524                 union ccb                       *ccb = (union ccb *)(req->orig_req);
  525 
  526                 xpt_freeze_simq(sc->sim, 1);
  527                 ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
  528         }
  529 }
  530 
  531 
  532 
  533 /*
  534  * Function name:       tw_osl_timeout
  535  * Description:         Call to timeout().
  536  *
  537  * Input:               req_handle -- ptr to request handle sent by OSL.
  538  * Output:              None
  539  * Return value:        None
  540  */
  541 TW_VOID
  542 tw_osl_timeout(struct tw_cl_req_handle *req_handle)
  543 {
  544         struct tw_osli_req_context      *req = req_handle->osl_req_ctxt;
  545         union ccb                       *ccb = (union ccb *)(req->orig_req);
  546         struct ccb_hdr                  *ccb_h = &(ccb->ccb_h);
  547 
  548         req->deadline = tw_osl_get_local_time() + (ccb_h->timeout / 1000);
  549 }
  550 
  551 
  552 
  553 /*
  554  * Function name:       tw_osl_untimeout
  555  * Description:         Inverse of call to timeout().
  556  *
  557  * Input:               req_handle -- ptr to request handle sent by OSL.
  558  * Output:              None
  559  * Return value:        None
  560  */
  561 TW_VOID
  562 tw_osl_untimeout(struct tw_cl_req_handle *req_handle)
  563 {
  564         struct tw_osli_req_context      *req = req_handle->osl_req_ctxt;
  565 
  566         req->deadline = 0;
  567 }
  568 
  569 
  570 
  571 /*
  572  * Function name:       tw_osl_scan_bus
  573  * Description:         CL calls this function to request for a bus scan.
  574  *
  575  * Input:               ctlr_handle     -- ptr to controller handle
  576  * Output:              None
  577  * Return value:        None
  578  */
  579 TW_VOID
  580 tw_osl_scan_bus(struct tw_cl_ctlr_handle *ctlr_handle)
  581 {
  582         struct twa_softc        *sc = ctlr_handle->osl_ctlr_ctxt;
  583         TW_INT32                error;
  584 
  585         if ((error = tw_osli_request_bus_scan(sc)))
  586                 tw_osli_printf(sc, "error = %d",
  587                         TW_CL_SEVERITY_ERROR_STRING,
  588                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
  589                         0x2109,
  590                         "Bus scan request to CAM failed",
  591                         error);
  592 }
  593 
  594 
  595 
  596 /*
  597  * Function name:       tw_osl_complete_io
  598  * Description:         Called to complete CAM scsi requests.
  599  *
  600  * Input:               req_handle      -- ptr to request handle
  601  * Output:              None
  602  * Return value:        None
  603  */
  604 TW_VOID
  605 tw_osl_complete_io(struct tw_cl_req_handle *req_handle)
  606 {
  607         struct tw_osli_req_context      *req = req_handle->osl_req_ctxt;
  608         struct tw_cl_req_packet         *req_pkt =
  609                 (struct tw_cl_req_packet *)(&req->req_pkt);
  610         struct tw_cl_scsi_req_packet    *scsi_req;
  611         struct twa_softc                *sc = req->ctlr;
  612         union ccb                       *ccb = (union ccb *)(req->orig_req);
  613 
  614         tw_osli_dbg_dprintf(10, sc, "entering");
  615 
  616         if (req->state != TW_OSLI_REQ_STATE_BUSY)
  617                 tw_osli_printf(sc, "request = %p, status = %d",
  618                         TW_CL_SEVERITY_ERROR_STRING,
  619                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
  620                         0x210A,
  621                         "Unposted command completed!!",
  622                         req, req->state);
  623 
  624         /*
  625          * Remove request from the busy queue.  Just mark it complete.
  626          * There's no need to move it into the complete queue as we are
  627          * going to be done with it right now.
  628          */
  629         req->state = TW_OSLI_REQ_STATE_COMPLETE;
  630         tw_osli_req_q_remove_item(req, TW_OSLI_BUSY_Q);
  631 
  632         tw_osli_unmap_request(req);
  633 
  634         req->deadline = 0;
  635         if (req->error_code) {
  636                 /* This request never got submitted to the firmware. */
  637                 if (req->error_code == EBUSY) {
  638                         /*
  639                          * Cmd queue is full, or the Common Layer is out of
  640                          * resources.  The simq will already have been frozen.
  641                          * When this ccb gets completed will unfreeze the simq.
  642                          */
  643                         ccb->ccb_h.status |= CAM_REQUEUE_REQ;
  644                 }
  645                 else if (req->error_code == EFBIG)
  646                         ccb->ccb_h.status = CAM_REQ_TOO_BIG;
  647                 else
  648                         ccb->ccb_h.status = CAM_REQ_CMP_ERR;
  649         } else {
  650                 scsi_req = &(req_pkt->gen_req_pkt.scsi_req);
  651                 if (req_pkt->status == TW_CL_ERR_REQ_SUCCESS)
  652                         ccb->ccb_h.status = CAM_REQ_CMP;
  653                 else {
  654                         if (req_pkt->status & TW_CL_ERR_REQ_INVALID_TARGET)
  655                                 ccb->ccb_h.status |= CAM_SEL_TIMEOUT;
  656                         else if (req_pkt->status & TW_CL_ERR_REQ_INVALID_LUN)
  657                                 ccb->ccb_h.status |= CAM_DEV_NOT_THERE;
  658                         else if (req_pkt->status & TW_CL_ERR_REQ_SCSI_ERROR)
  659                                 ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
  660                         else if (req_pkt->status & TW_CL_ERR_REQ_BUS_RESET)
  661                                 ccb->ccb_h.status |= (CAM_REQUEUE_REQ | CAM_SCSI_BUS_RESET);
  662                         /*
  663                          * If none of the above errors occurred, simply
  664                          * mark completion error.
  665                          */
  666                         if (ccb->ccb_h.status == 0)
  667                                 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
  668 
  669                         if (req_pkt->status & TW_CL_ERR_REQ_AUTO_SENSE_VALID) {
  670                                 ccb->csio.sense_len = scsi_req->sense_len;
  671                                 ccb->ccb_h.status |= CAM_AUTOSNS_VALID;
  672                         }
  673                 }
  674 
  675                 ccb->csio.scsi_status = scsi_req->scsi_status;
  676         }
  677 
  678         ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
  679         mtx_lock(sc->sim_lock);
  680         xpt_done(ccb);
  681         mtx_unlock(sc->sim_lock);
  682         if (! req->error_code)
  683                  /* twa_action will free the request otherwise */
  684                 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q);
  685 }
  686 

Cache object: f05955c54659865a826cdd847445a2a6


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