/* * Copyright (c) 2004-05 Applied Micro Circuits Corporation. * Copyright (c) 2004-05 Vinod Kashyap. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ /* * AMCC'S 3ware driver for 9000 series storage controllers. * * Author: Vinod Kashyap */ /* * FreeBSD CAM related functions. */ #include "tw_osl_includes.h" #include #include #include #include #include #include #include #include #include static TW_VOID twa_action(struct cam_sim *sim, union ccb *ccb); static TW_VOID twa_poll(struct cam_sim *sim); static TW_VOID twa_async(TW_VOID *callback_arg, TW_UINT32 code, struct cam_path *path, TW_VOID *arg); static TW_VOID twa_timeout(TW_VOID *arg); static TW_VOID twa_bus_scan_cb(struct cam_periph *periph, union ccb *ccb); static TW_INT32 tw_osli_execute_scsi(struct tw_osli_req_context *req, union ccb *ccb); /* * Function name: tw_osli_cam_attach * Description: Attaches the driver to CAM. * * Input: sc -- ptr to OSL internal ctlr context * Output: None * Return value: 0 -- success * non-zero-- failure */ TW_INT32 tw_osli_cam_attach(struct twa_softc *sc) { struct cam_devq *devq; struct ccb_setasync csa; TW_INT32 error; tw_osli_dbg_dprintf(3, sc, "entered"); /* * Create the device queue for our SIM. */ if ((devq = cam_simq_alloc(TW_OSLI_MAX_NUM_IOS)) == NULL) { tw_osli_printf(sc, "error = %d", TW_CL_SEVERITY_ERROR_STRING, TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 0x2100, "Failed to create SIM device queue", ENOMEM); return(ENOMEM); } /* * Create a SIM entry. Though we can support TW_OSLI_MAX_NUM_IOS * simultaneous requests, we claim to be able to handle only * (TW_OSLI_MAX_NUM_IOS - 1), so that we always have a request * packet available to service ioctls. */ tw_osli_dbg_dprintf(3, sc, "Calling cam_sim_alloc"); sc->sim = cam_sim_alloc(twa_action, twa_poll, "twa", sc, device_get_unit(sc->bus_dev), TW_OSLI_MAX_NUM_IOS - 1, 1, devq); if (sc->sim == NULL) { cam_simq_free(devq); tw_osli_printf(sc, "error = %d", TW_CL_SEVERITY_ERROR_STRING, TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 0x2101, "Failed to create a SIM entry", ENOMEM); return(ENOMEM); } /* * Register the bus. */ tw_osli_dbg_dprintf(3, sc, "Calling xpt_bus_register"); if (xpt_bus_register(sc->sim, 0) != CAM_SUCCESS) { cam_sim_free(sc->sim, TRUE); sc->sim = NULL; /* so cam_detach will not try to free it */ tw_osli_printf(sc, "error = %d", TW_CL_SEVERITY_ERROR_STRING, TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 0x2102, "Failed to register the bus", ENXIO); return(ENXIO); } tw_osli_dbg_dprintf(3, sc, "Calling xpt_create_path"); if (xpt_create_path(&sc->path, NULL, cam_sim_path(sc->sim), CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { xpt_bus_deregister(cam_sim_path (sc->sim)); /* Passing TRUE to cam_sim_free will free the devq as well. */ cam_sim_free(sc->sim, TRUE); tw_osli_printf(sc, "error = %d", TW_CL_SEVERITY_ERROR_STRING, TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 0x2103, "Failed to create path", ENXIO); return(ENXIO); } tw_osli_dbg_dprintf(3, sc, "Calling xpt_setup_ccb"); xpt_setup_ccb(&csa.ccb_h, sc->path, 5); csa.ccb_h.func_code = XPT_SASYNC_CB; csa.event_enable = AC_FOUND_DEVICE | AC_LOST_DEVICE; csa.callback = twa_async; csa.callback_arg = sc; xpt_action((union ccb *)&csa); tw_osli_dbg_dprintf(3, sc, "Calling tw_osli_request_bus_scan"); /* * Request a bus scan, so that CAM gets to know of * the logical units that we control. */ if ((error = tw_osli_request_bus_scan(sc))) tw_osli_printf(sc, "error = %d", TW_CL_SEVERITY_ERROR_STRING, TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 0x2104, "Bus scan request to CAM failed", error); tw_osli_dbg_dprintf(3, sc, "exiting"); return(0); } /* * Function name: tw_osli_cam_detach * Description: Detaches the driver from CAM. * * Input: sc -- ptr to OSL internal ctlr context * Output: None * Return value: None */ TW_VOID tw_osli_cam_detach(struct twa_softc *sc) { tw_osli_dbg_dprintf(3, sc, "entered"); if (sc->path) xpt_free_path(sc->path); if (sc->sim) { xpt_bus_deregister(cam_sim_path(sc->sim)); /* Passing TRUE to cam_sim_free will free the devq as well. */ cam_sim_free(sc->sim, TRUE); } } /* * Function name: tw_osli_execute_scsi * Description: Build a fw cmd, based on a CAM style ccb, and * send it down. * * Input: req -- ptr to OSL internal request context * ccb -- ptr to CAM style ccb * Output: None * Return value: 0 -- success * non-zero-- failure */ TW_INT32 tw_osli_execute_scsi(struct tw_osli_req_context *req, union ccb *ccb) { struct twa_softc *sc = req->ctlr; struct tw_cl_req_packet *req_pkt; struct tw_cl_scsi_req_packet *scsi_req; struct ccb_hdr *ccb_h = &(ccb->ccb_h); struct ccb_scsiio *csio = &(ccb->csio); TW_INT32 error; tw_osli_dbg_dprintf(10, sc, "SCSI I/O request 0x%x", csio->cdb_io.cdb_bytes[0]); if (ccb_h->target_id >= TW_CL_MAX_NUM_UNITS) { tw_osli_dbg_dprintf(3, sc, "Invalid target. PTL = %x %x %x", ccb_h->path_id, ccb_h->target_id, ccb_h->target_lun); ccb_h->status |= CAM_TID_INVALID; xpt_done(ccb); return(1); } if (ccb_h->target_lun >= TW_CL_MAX_NUM_LUNS) { tw_osli_dbg_dprintf(3, sc, "Invalid lun. PTL = %x %x %x", ccb_h->path_id, ccb_h->target_id, ccb_h->target_lun); ccb_h->status |= CAM_LUN_INVALID; xpt_done(ccb); return(1); } if(ccb_h->flags & CAM_CDB_PHYS) { tw_osli_printf(sc, "", TW_CL_SEVERITY_ERROR_STRING, TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 0x2105, "Physical CDB address!"); ccb_h->status = CAM_REQ_CMP_ERR; xpt_done(ccb); return(1); } /* * We are going to work on this request. Mark it as enqueued (though * we don't actually queue it...) */ ccb_h->status |= CAM_SIM_QUEUED; if((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { if(ccb_h->flags & CAM_DIR_IN) req->flags |= TW_OSLI_REQ_FLAGS_DATA_IN; else req->flags |= TW_OSLI_REQ_FLAGS_DATA_OUT; } /* Build the CL understood request packet for SCSI cmds. */ req_pkt = &req->req_pkt; req_pkt->status = 0; req_pkt->tw_osl_callback = tw_osl_complete_io; scsi_req = &(req_pkt->gen_req_pkt.scsi_req); scsi_req->unit = ccb_h->target_id; scsi_req->lun = ccb_h->target_lun; scsi_req->sense_len = 0; scsi_req->sense_data = (TW_UINT8 *)(&csio->sense_data); scsi_req->scsi_status = 0; if(ccb_h->flags & CAM_CDB_POINTER) scsi_req->cdb = csio->cdb_io.cdb_ptr; else scsi_req->cdb = csio->cdb_io.cdb_bytes; scsi_req->cdb_len = csio->cdb_len; if (!(ccb_h->flags & CAM_DATA_PHYS)) { /* Virtual data addresses. Need to convert them... */ tw_osli_dbg_dprintf(3, sc, "XPT_SCSI_IO: Single virtual address!"); if (!(ccb_h->flags & CAM_SCATTER_VALID)) { if (csio->dxfer_len > TW_CL_MAX_IO_SIZE) { tw_osli_printf(sc, "size = %d", TW_CL_SEVERITY_ERROR_STRING, TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 0x2106, "I/O size too big", csio->dxfer_len); ccb_h->status = CAM_REQ_TOO_BIG; xpt_done(ccb); return(1); } if ((req->length = csio->dxfer_len)) { req->data = csio->data_ptr; scsi_req->sgl_entries = 1; } } else { tw_osli_printf(sc, "", TW_CL_SEVERITY_ERROR_STRING, TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 0x2107, "XPT_SCSI_IO: Got SGList"); ccb_h->status = CAM_REQ_CMP_ERR; xpt_done(ccb); return(1); } } else { /* Data addresses are physical. */ tw_osli_printf(sc, "", TW_CL_SEVERITY_ERROR_STRING, TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 0x2108, "XPT_SCSI_IO: Physical data addresses"); ccb_h->status = CAM_REQ_CMP_ERR; ccb_h->status |= CAM_RELEASE_SIMQ; ccb_h->status &= ~CAM_SIM_QUEUED; xpt_done(ccb); return(1); } ccb_h->timeout_ch = timeout(twa_timeout, req, (ccb_h->timeout * hz) / 1000); /* * twa_map_load_data_callback will fill in the SGL, * and submit the I/O. */ error = tw_osli_map_request(req); return(error); } /* * Function name: twa_action * Description: Driver entry point for CAM's use. * * Input: sim -- sim corresponding to the ctlr * ccb -- ptr to CAM request * Output: None * Return value: None */ TW_VOID twa_action(struct cam_sim *sim, union ccb *ccb) { struct twa_softc *sc = (struct twa_softc *)cam_sim_softc(sim); struct ccb_hdr *ccb_h = &(ccb->ccb_h); switch (ccb_h->func_code) { case XPT_SCSI_IO: /* SCSI I/O */ { struct tw_osli_req_context *req; if ((sc->state & TW_OSLI_CTLR_STATE_SIMQ_FROZEN) || ((req = tw_osli_get_request(sc)) == NULL)) { tw_osli_dbg_dprintf(2, sc, "simq frozen/Cannot get request pkt."); /* * Freeze the simq to maintain ccb ordering. The next * ccb that gets completed will unfreeze the simq. */ tw_osli_disallow_new_requests(sc); ccb_h->status |= CAM_REQUEUE_REQ; xpt_done(ccb); break; } req->req_handle.osl_req_ctxt = req; req->orig_req = ccb; if (tw_osli_execute_scsi(req, ccb)) tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); break; } case XPT_ABORT: tw_osli_dbg_dprintf(2, sc, "Abort request."); ccb_h->status = CAM_UA_ABORT; xpt_done(ccb); break; case XPT_RESET_BUS: tw_cl_create_event(&(sc->ctlr_handle), TW_CL_TRUE, TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 0x2108, 0x3, TW_CL_SEVERITY_INFO_STRING, "Received Reset Bus request from CAM", " "); if (tw_cl_reset_ctlr(&sc->ctlr_handle)) { tw_cl_create_event(&(sc->ctlr_handle), TW_CL_TRUE, TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 0x2109, 0x1, TW_CL_SEVERITY_ERROR_STRING, "Failed to reset bus", " "); ccb_h->status = CAM_REQ_CMP_ERR; } else ccb_h->status = CAM_REQ_CMP; xpt_done(ccb); break; case XPT_SET_TRAN_SETTINGS: tw_osli_dbg_dprintf(3, sc, "XPT_SET_TRAN_SETTINGS"); /* * This command is not supported, since it's very specific * to SCSI, and we are doing ATA. */ ccb_h->status = CAM_FUNC_NOTAVAIL; xpt_done(ccb); break; case XPT_GET_TRAN_SETTINGS: { struct ccb_trans_settings *cts = &ccb->cts; tw_osli_dbg_dprintf(3, sc, "XPT_GET_TRAN_SETTINGS"); cts->valid = (CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID); cts->flags &= ~(CCB_TRANS_DISC_ENB | CCB_TRANS_TAG_ENB); ccb_h->status = CAM_REQ_CMP; xpt_done(ccb); break; } case XPT_CALC_GEOMETRY: tw_osli_dbg_dprintf(3, sc, "XPT_CALC_GEOMETRY"); cam_calc_geometry(&ccb->ccg, 1/* extended */); xpt_done(ccb); break; case XPT_PATH_INQ: /* Path inquiry -- get twa properties */ { struct ccb_pathinq *path_inq = &ccb->cpi; tw_osli_dbg_dprintf(3, sc, "XPT_PATH_INQ request"); path_inq->version_num = 1; path_inq->hba_inquiry = 0; path_inq->target_sprt = 0; path_inq->hba_misc = 0; path_inq->hba_eng_cnt = 0; path_inq->max_target = TW_CL_MAX_NUM_UNITS; path_inq->max_lun = TW_CL_MAX_NUM_LUNS - 1; path_inq->unit_number = cam_sim_unit(sim); path_inq->bus_id = cam_sim_bus(sim); path_inq->initiator_id = 12; path_inq->base_transfer_speed = 100000; strncpy(path_inq->sim_vid, "FreeBSD", SIM_IDLEN); strncpy(path_inq->hba_vid, "3ware", HBA_IDLEN); strncpy(path_inq->dev_name, cam_sim_name(sim), DEV_IDLEN); ccb_h->status = CAM_REQ_CMP; xpt_done(ccb); break; } default: tw_osli_dbg_dprintf(3, sc, "func_code = %x", ccb_h->func_code); ccb_h->status = CAM_REQ_INVALID; xpt_done(ccb); break; } } /* * Function name: twa_poll * Description: Driver entry point called when interrupts are not * available. * * Input: sim -- sim corresponding to the controller * Output: None * Return value: None */ TW_VOID twa_poll(struct cam_sim *sim) { struct twa_softc *sc = (struct twa_softc *)(cam_sim_softc(sim)); tw_osli_dbg_dprintf(3, sc, "entering; sc = %p", sc); if (tw_cl_interrupt(&(sc->ctlr_handle))) tw_cl_deferred_interrupt(&(sc->ctlr_handle)); tw_osli_dbg_dprintf(3, sc, "exiting; sc = %p", sc); } /* * Function name: twa_async * Description: Driver entry point for CAM to notify driver of special * events. We don't use this for now. * * Input: callback_arg -- ptr to per ctlr structure * code -- code associated with the event * path -- cam path * arg -- * Output: None * Return value: 0 -- success * non-zero-- failure */ TW_VOID twa_async(TW_VOID *callback_arg, TW_UINT32 code, struct cam_path *path, TW_VOID *arg) { #ifdef TW_OSL_DEBUG struct twa_softc *sc = (struct twa_softc *)callback_arg; #endif /* TW_OSL_DEBUG */ tw_osli_dbg_dprintf(3, sc, "sc = %p, code = %x, path = %p, arg = %p", sc, code, path, arg); } /* * Function name: twa_timeout * Description: Driver entry point for being alerted on a request * timing out. * * Input: arg -- ptr to timed out request * Output: None * Return value: None */ static TW_VOID twa_timeout(TW_VOID *arg) { struct tw_osli_req_context *req = (struct tw_osli_req_context *)arg; tw_cl_create_event(&(req->ctlr->ctlr_handle), TW_CL_TRUE, TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 0x210B, 0x1, TW_CL_SEVERITY_ERROR_STRING, "Request timed out!", "request = %p", req); tw_cl_reset_ctlr(&(req->ctlr->ctlr_handle)); } /* * Function name: tw_osli_request_bus_scan * Description: Requests CAM for a scan of the bus. * * Input: sc -- ptr to per ctlr structure * Output: None * Return value: 0 -- success * non-zero-- failure */ TW_INT32 tw_osli_request_bus_scan(struct twa_softc *sc) { struct cam_path *path; union ccb *ccb; tw_osli_dbg_dprintf(3, sc, "entering"); if ((ccb = malloc(sizeof(union ccb), M_TEMP, M_WAITOK)) == NULL) return(ENOMEM); bzero(ccb, sizeof(union ccb)); if (xpt_create_path(&path, xpt_periph, cam_sim_path(sc->sim), CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) return(EIO); xpt_setup_ccb(&ccb->ccb_h, path, 5); ccb->ccb_h.func_code = XPT_SCAN_BUS; ccb->ccb_h.cbfcnp = twa_bus_scan_cb; ccb->crcn.flags = CAM_FLAG_NONE; xpt_action(ccb); return(0); } /* * Function name: twa_bus_scan_cb * Description: Callback from CAM on a bus scan request. * * Input: periph -- we don't use this * ccb -- bus scan request ccb that we sent to CAM * Output: None * Return value: None */ static TW_VOID twa_bus_scan_cb(struct cam_periph *periph, union ccb *ccb) { tw_osli_dbg_printf(3, "entering"); if (ccb->ccb_h.status != CAM_REQ_CMP) printf("cam_scan_callback: failure status = %x\n", ccb->ccb_h.status); else tw_osli_dbg_printf(3, "success"); xpt_free_path(ccb->ccb_h.path); free(ccb, M_TEMP); } /* * Function name: tw_osli_allow_new_requests * Description: Sets the appropriate status bits in a ccb such that, * when the ccb is completed by a call to xpt_done, * CAM knows that it's ok to unfreeze the flow of new * requests to this controller, if the flow is frozen. * * Input: sc -- ptr to OSL internal ctlr context * ccb -- ptr to CAM request * Output: None * Return value: None */ TW_VOID tw_osli_allow_new_requests(struct twa_softc *sc, TW_VOID *ccb) { ((union ccb *)(ccb))->ccb_h.status |= CAM_RELEASE_SIMQ; sc->state &= ~TW_OSLI_CTLR_STATE_SIMQ_FROZEN; } /* * Function name: tw_osli_disallow_new_requests * Description: Calls the appropriate CAM function, so as to freeze * the flow of new requests from CAM to this controller. * * Input: sc -- ptr to OSL internal ctlr context * Output: None * Return value: None */ TW_VOID tw_osli_disallow_new_requests(struct twa_softc *sc) { xpt_freeze_simq(sc->sim, 1); sc->state |= TW_OSLI_CTLR_STATE_SIMQ_FROZEN; } /* * Function name: tw_osl_scan_bus * Description: CL calls this function to request for a bus scan. * * Input: ctlr_handle -- ptr to controller handle * Output: None * Return value: None */ TW_VOID tw_osl_scan_bus(struct tw_cl_ctlr_handle *ctlr_handle) { struct twa_softc *sc = ctlr_handle->osl_ctlr_ctxt; TW_INT32 error; if ((error = tw_osli_request_bus_scan(sc))) tw_osli_printf(sc, "error = %d", TW_CL_SEVERITY_ERROR_STRING, TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 0x2109, "Bus scan request to CAM failed", error); } /* * Function name: tw_osl_complete_io * Description: Called to complete CAM scsi requests. * * Input: req_handle -- ptr to request handle * Output: None * Return value: None */ TW_VOID tw_osl_complete_io(struct tw_cl_req_handle *req_handle) { struct tw_osli_req_context *req = req_handle->osl_req_ctxt; struct tw_cl_req_packet *req_pkt = (struct tw_cl_req_packet *)(&req->req_pkt); struct tw_cl_scsi_req_packet *scsi_req; struct twa_softc *sc = req->ctlr; union ccb *ccb = (union ccb *)(req->orig_req); tw_osli_dbg_dprintf(10, sc, "entering"); if (req->state != TW_OSLI_REQ_STATE_BUSY) tw_osli_printf(sc, "request = %p, status = %d", TW_CL_SEVERITY_ERROR_STRING, TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 0x210A, "Unposted command completed!!", req, req->state); /* * Remove request from the busy queue. Just mark it complete. * There's no need to move it into the complete queue as we are * going to be done with it right now. */ req->state = TW_OSLI_REQ_STATE_COMPLETE; tw_osli_req_q_remove_item(req, TW_OSLI_BUSY_Q); tw_osli_unmap_request(req); untimeout(twa_timeout, req, ccb->ccb_h.timeout_ch); if (req->error_code) { /* This request never got submitted to the firmware. */ if (req->error_code == EBUSY) { /* * Cmd queue is full, or common layer is out * of resources. Freeze the simq to maintain * ccb ordering. The next ccb that gets * completed will unfreeze the simq. */ tw_osli_disallow_new_requests(req->ctlr); ccb->ccb_h.status |= CAM_REQUEUE_REQ; } else if (req->error_code == EFBIG) ccb->ccb_h.status = CAM_REQ_TOO_BIG; else ccb->ccb_h.status = CAM_REQ_CMP_ERR; } else { scsi_req = &(req_pkt->gen_req_pkt.scsi_req); if (req_pkt->status == TW_CL_ERR_REQ_SUCCESS) ccb->ccb_h.status = CAM_REQ_CMP; else { if (req_pkt->status & TW_CL_ERR_REQ_INVALID_TARGET) ccb->ccb_h.status |= CAM_TID_INVALID; else if (req_pkt->status & TW_CL_ERR_REQ_INVALID_LUN) ccb->ccb_h.status |= CAM_LUN_INVALID; else if (req_pkt->status & TW_CL_ERR_REQ_SCSI_ERROR) ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR; else if (req_pkt->status & TW_CL_ERR_REQ_BUS_RESET) ccb->ccb_h.status |= CAM_SCSI_BUS_RESET; /* * If none of the above errors occurred, simply * mark completion error. */ if (ccb->ccb_h.status == 0) ccb->ccb_h.status = CAM_REQ_CMP_ERR; if (req_pkt->status & TW_CL_ERR_REQ_AUTO_SENSE_VALID) { ccb->csio.sense_len = scsi_req->sense_len; ccb->ccb_h.status |= CAM_AUTOSNS_VALID; } } ccb->csio.scsi_status = scsi_req->scsi_status; /* If simq is frozen, unfreeze it. */ if (sc->state & TW_OSLI_CTLR_STATE_SIMQ_FROZEN) tw_osli_allow_new_requests(sc, (TW_VOID *)ccb); } ccb->ccb_h.status &= ~CAM_SIM_QUEUED; xpt_done(ccb); if (! req->error_code) /* twa_action will free the request otherwise */ tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); }