/*- * Copyright (c) 1997 Justin T. Gibbs. * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry. * 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, * without modification, immediately at the beginning of the file. * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * 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. */ /* * Derived from the NetBSD SCSI changer driver. * * $NetBSD: ch.c,v 1.32 1998/01/12 09:49:12 thorpej Exp $ * */ /*- * Copyright (c) 1996, 1997 Jason R. Thorpe * All rights reserved. * * Partially based on an autochanger driver written by Stefan Grefen * and on an autochanger driver written by the Systems Programming Group * at the University of Utah Computer Science Department. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgements: * This product includes software developed by Jason R. Thorpe * for And Communications, http://www.and.com/ * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Timeout definitions for various changer related commands. They may * be too short for some devices (especially the timeout for INITIALIZE * ELEMENT STATUS). */ static const u_int32_t CH_TIMEOUT_MODE_SENSE = 6000; static const u_int32_t CH_TIMEOUT_MOVE_MEDIUM = 100000; static const u_int32_t CH_TIMEOUT_EXCHANGE_MEDIUM = 100000; static const u_int32_t CH_TIMEOUT_POSITION_TO_ELEMENT = 100000; static const u_int32_t CH_TIMEOUT_READ_ELEMENT_STATUS = 10000; static const u_int32_t CH_TIMEOUT_SEND_VOLTAG = 10000; static const u_int32_t CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS = 500000; typedef enum { CH_FLAG_INVALID = 0x001, CH_FLAG_OPEN = 0x002 } ch_flags; typedef enum { CH_STATE_PROBE, CH_STATE_NORMAL } ch_state; typedef enum { CH_CCB_PROBE, CH_CCB_WAITING } ch_ccb_types; typedef enum { CH_Q_NONE = 0x00, CH_Q_NO_DBD = 0x01 } ch_quirks; #define ccb_state ppriv_field0 #define ccb_bp ppriv_ptr1 struct scsi_mode_sense_data { struct scsi_mode_header_6 header; struct scsi_mode_blk_desc blk_desc; union { struct page_element_address_assignment ea; struct page_transport_geometry_parameters tg; struct page_device_capabilities cap; } pages; }; struct ch_softc { ch_flags flags; ch_state state; ch_quirks quirks; union ccb saved_ccb; struct devstat *device_stats; struct cdev *dev; int sc_picker; /* current picker */ /* * The following information is obtained from the * element address assignment page. */ int sc_firsts[CHET_MAX + 1]; /* firsts */ int sc_counts[CHET_MAX + 1]; /* counts */ /* * The following mask defines the legal combinations * of elements for the MOVE MEDIUM command. */ u_int8_t sc_movemask[CHET_MAX + 1]; /* * As above, but for EXCHANGE MEDIUM. */ u_int8_t sc_exchangemask[CHET_MAX + 1]; /* * Quirks; see below. XXX KDM not implemented yet */ int sc_settledelay; /* delay for settle */ }; static d_open_t chopen; static d_close_t chclose; static d_ioctl_t chioctl; static periph_init_t chinit; static periph_ctor_t chregister; static periph_oninv_t choninvalidate; static periph_dtor_t chcleanup; static periph_start_t chstart; static void chasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg); static void chdone(struct cam_periph *periph, union ccb *done_ccb); static int cherror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags); static int chmove(struct cam_periph *periph, struct changer_move *cm); static int chexchange(struct cam_periph *periph, struct changer_exchange *ce); static int chposition(struct cam_periph *periph, struct changer_position *cp); static int chgetelemstatus(struct cam_periph *periph, struct changer_element_status_request *csr); static int chsetvoltag(struct cam_periph *periph, struct changer_set_voltag_request *csvr); static int chielem(struct cam_periph *periph, unsigned int timeout); static int chgetparams(struct cam_periph *periph); static struct periph_driver chdriver = { chinit, "ch", TAILQ_HEAD_INITIALIZER(chdriver.units), /* generation */ 0 }; PERIPHDRIVER_DECLARE(ch, chdriver); static struct cdevsw ch_cdevsw = { .d_version = D_VERSION, .d_flags = 0, .d_open = chopen, .d_close = chclose, .d_ioctl = chioctl, .d_name = "ch", }; MALLOC_DEFINE(M_SCSICH, "scsi_ch", "scsi_ch buffers"); static void chinit(void) { cam_status status; struct cam_path *path; /* * Install a global async callback. This callback will * receive async callbacks like "new device found". */ status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID, CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); if (status == CAM_REQ_CMP) { struct ccb_setasync csa; xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5); csa.ccb_h.func_code = XPT_SASYNC_CB; csa.event_enable = AC_FOUND_DEVICE; csa.callback = chasync; csa.callback_arg = NULL; xpt_action((union ccb *)&csa); status = csa.ccb_h.status; xpt_free_path(path); } if (status != CAM_REQ_CMP) { printf("ch: Failed to attach master async callback " "due to status 0x%x!\n", status); } } static void choninvalidate(struct cam_periph *periph) { struct ch_softc *softc; struct ccb_setasync csa; softc = (struct ch_softc *)periph->softc; /* * De-register any async callbacks. */ xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); csa.ccb_h.func_code = XPT_SASYNC_CB; csa.event_enable = 0; csa.callback = chasync; csa.callback_arg = periph; xpt_action((union ccb *)&csa); softc->flags |= CH_FLAG_INVALID; xpt_print(periph->path, "lost device\n"); } static void chcleanup(struct cam_periph *periph) { struct ch_softc *softc; softc = (struct ch_softc *)periph->softc; devstat_remove_entry(softc->device_stats); destroy_dev(softc->dev); xpt_print(periph->path, "removing device entry\n"); free(softc, M_DEVBUF); } static void chasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg) { struct cam_periph *periph; periph = (struct cam_periph *)callback_arg; switch(code) { case AC_FOUND_DEVICE: { struct ccb_getdev *cgd; cam_status status; cgd = (struct ccb_getdev *)arg; if (cgd == NULL) break; if (SID_TYPE(&cgd->inq_data)!= T_CHANGER) break; /* * Allocate a peripheral instance for * this device and start the probe * process. */ status = cam_periph_alloc(chregister, choninvalidate, chcleanup, chstart, "ch", CAM_PERIPH_BIO, cgd->ccb_h.path, chasync, AC_FOUND_DEVICE, cgd); if (status != CAM_REQ_CMP && status != CAM_REQ_INPROG) printf("chasync: Unable to probe new device " "due to status 0x%x\n", status); break; } default: cam_periph_async(periph, code, path, arg); break; } } static cam_status chregister(struct cam_periph *periph, void *arg) { struct ch_softc *softc; struct ccb_setasync csa; struct ccb_getdev *cgd; cgd = (struct ccb_getdev *)arg; if (periph == NULL) { printf("chregister: periph was NULL!!\n"); return(CAM_REQ_CMP_ERR); } if (cgd == NULL) { printf("chregister: no getdev CCB, can't register device\n"); return(CAM_REQ_CMP_ERR); } softc = (struct ch_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT); if (softc == NULL) { printf("chregister: Unable to probe new device. " "Unable to allocate softc\n"); return(CAM_REQ_CMP_ERR); } bzero(softc, sizeof(*softc)); softc->state = CH_STATE_PROBE; periph->softc = softc; softc->quirks = CH_Q_NONE; /* * Changers don't have a blocksize, and obviously don't support * tagged queueing. */ softc->device_stats = devstat_new_entry("ch", periph->unit_number, 0, DEVSTAT_NO_BLOCKSIZE | DEVSTAT_NO_ORDERED_TAGS, SID_TYPE(&cgd->inq_data)| DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_OTHER); /* Register the device */ cam_periph_unlock(periph); softc->dev = make_dev(&ch_cdevsw, periph->unit_number, UID_ROOT, GID_OPERATOR, 0600, "%s%d", periph->periph_name, periph->unit_number); cam_periph_lock(periph); softc->dev->si_drv1 = periph; /* * Add an async callback so that we get * notified if this device goes away. */ xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); csa.ccb_h.func_code = XPT_SASYNC_CB; csa.event_enable = AC_LOST_DEVICE; csa.callback = chasync; csa.callback_arg = periph; xpt_action((union ccb *)&csa); /* * Lock this periph until we are setup. * This first call can't block */ (void)cam_periph_hold(periph, PRIBIO); xpt_schedule(periph, /*priority*/5); return(CAM_REQ_CMP); } static int chopen(struct cdev *dev, int flags, int fmt, struct thread *td) { struct cam_periph *periph; struct ch_softc *softc; int error; periph = (struct cam_periph *)dev->si_drv1; if (cam_periph_acquire(periph) != CAM_REQ_CMP) return (ENXIO); softc = (struct ch_softc *)periph->softc; cam_periph_lock(periph); if (softc->flags & CH_FLAG_INVALID) { cam_periph_unlock(periph); cam_periph_release(periph); return(ENXIO); } if ((softc->flags & CH_FLAG_OPEN) == 0) softc->flags |= CH_FLAG_OPEN; else cam_periph_release(periph); if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) { cam_periph_unlock(periph); cam_periph_release(periph); return (error); } /* * Load information about this changer device into the softc. */ if ((error = chgetparams(periph)) != 0) { softc->flags &= ~CH_FLAG_OPEN; cam_periph_unlock(periph); cam_periph_release(periph); return(error); } cam_periph_unhold(periph); cam_periph_unlock(periph); return(error); } static int chclose(struct cdev *dev, int flag, int fmt, struct thread *td) { struct cam_periph *periph; struct ch_softc *softc; int error; error = 0; periph = (struct cam_periph *)dev->si_drv1; if (periph == NULL) return(ENXIO); softc = (struct ch_softc *)periph->softc; cam_periph_lock(periph); softc->flags &= ~CH_FLAG_OPEN; cam_periph_unlock(periph); cam_periph_release(periph); return(0); } static void chstart(struct cam_periph *periph, union ccb *start_ccb) { struct ch_softc *softc; softc = (struct ch_softc *)periph->softc; switch (softc->state) { case CH_STATE_NORMAL: { if (periph->immediate_priority <= periph->pinfo.priority){ start_ccb->ccb_h.ccb_state = CH_CCB_WAITING; SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, periph_links.sle); periph->immediate_priority = CAM_PRIORITY_NONE; wakeup(&periph->ccb_list); } break; } case CH_STATE_PROBE: { int mode_buffer_len; void *mode_buffer; /* * Include the block descriptor when calculating the mode * buffer length, */ mode_buffer_len = sizeof(struct scsi_mode_header_6) + sizeof(struct scsi_mode_blk_desc) + sizeof(struct page_element_address_assignment); mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT); if (mode_buffer == NULL) { printf("chstart: couldn't malloc mode sense data\n"); break; } bzero(mode_buffer, mode_buffer_len); /* * Get the element address assignment page. */ scsi_mode_sense(&start_ccb->csio, /* retries */ 1, /* cbfcnp */ chdone, /* tag_action */ MSG_SIMPLE_Q_TAG, /* dbd */ (softc->quirks & CH_Q_NO_DBD) ? FALSE : TRUE, /* page_code */ SMS_PAGE_CTRL_CURRENT, /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE, /* param_buf */ (u_int8_t *)mode_buffer, /* param_len */ mode_buffer_len, /* sense_len */ SSD_FULL_SIZE, /* timeout */ CH_TIMEOUT_MODE_SENSE); start_ccb->ccb_h.ccb_bp = NULL; start_ccb->ccb_h.ccb_state = CH_CCB_PROBE; xpt_action(start_ccb); break; } } } static void chdone(struct cam_periph *periph, union ccb *done_ccb) { struct ch_softc *softc; struct ccb_scsiio *csio; softc = (struct ch_softc *)periph->softc; csio = &done_ccb->csio; switch(done_ccb->ccb_h.ccb_state) { case CH_CCB_PROBE: { struct scsi_mode_header_6 *mode_header; struct page_element_address_assignment *ea; char announce_buf[80]; mode_header = (struct scsi_mode_header_6 *)csio->data_ptr; ea = (struct page_element_address_assignment *) find_mode_page_6(mode_header); if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP){ softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea); softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte); softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea); softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse); softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea); softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee); softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea); softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte); softc->sc_picker = softc->sc_firsts[CHET_MT]; #define PLURAL(c) (c) == 1 ? "" : "s" snprintf(announce_buf, sizeof(announce_buf), "%d slot%s, %d drive%s, " "%d picker%s, %d portal%s", softc->sc_counts[CHET_ST], PLURAL(softc->sc_counts[CHET_ST]), softc->sc_counts[CHET_DT], PLURAL(softc->sc_counts[CHET_DT]), softc->sc_counts[CHET_MT], PLURAL(softc->sc_counts[CHET_MT]), softc->sc_counts[CHET_IE], PLURAL(softc->sc_counts[CHET_IE])); #undef PLURAL } else { int error; error = cherror(done_ccb, CAM_RETRY_SELTO, SF_RETRY_UA | SF_NO_PRINT); /* * Retry any UNIT ATTENTION type errors. They * are expected at boot. */ if (error == ERESTART) { /* * A retry was scheuled, so * just return. */ return; } else if (error != 0) { int retry_scheduled; struct scsi_mode_sense_6 *sms; sms = (struct scsi_mode_sense_6 *) done_ccb->csio.cdb_io.cdb_bytes; /* * Check to see if block descriptors were * disabled. Some devices don't like that. * We're taking advantage of the fact that * the first few bytes of the 6 and 10 byte * mode sense commands are the same. If * block descriptors were disabled, enable * them and re-send the command. */ if (sms->byte2 & SMS_DBD) { sms->byte2 &= ~SMS_DBD; xpt_action(done_ccb); softc->quirks |= CH_Q_NO_DBD; retry_scheduled = 1; } else retry_scheduled = 0; /* Don't wedge this device's queue */ cam_release_devq(done_ccb->ccb_h.path, /*relsim_flags*/0, /*reduction*/0, /*timeout*/0, /*getcount_only*/0); if (retry_scheduled) return; if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR) scsi_sense_print(&done_ccb->csio); else { xpt_print(periph->path, "got CAM status %#x\n", done_ccb->ccb_h.status); } xpt_print(periph->path, "fatal error, failed " "to attach to device\n"); cam_periph_invalidate(periph); announce_buf[0] = '\0'; } } if (announce_buf[0] != '\0') xpt_announce_periph(periph, announce_buf); softc->state = CH_STATE_NORMAL; free(mode_header, M_SCSICH); /* * Since our peripheral may be invalidated by an error * above or an external event, we must release our CCB * before releasing the probe lock on the peripheral. * The peripheral will only go away once the last lock * is removed, and we need it around for the CCB release * operation. */ xpt_release_ccb(done_ccb); cam_periph_unhold(periph); return; } case CH_CCB_WAITING: { /* Caller will release the CCB */ wakeup(&done_ccb->ccb_h.cbfcnp); return; } default: break; } xpt_release_ccb(done_ccb); } static int cherror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) { struct ch_softc *softc; struct cam_periph *periph; periph = xpt_path_periph(ccb->ccb_h.path); softc = (struct ch_softc *)periph->softc; return (cam_periph_error(ccb, cam_flags, sense_flags, &softc->saved_ccb)); } static int chioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td) { struct cam_periph *periph; struct ch_softc *softc; int error; periph = (struct cam_periph *)dev->si_drv1; if (periph == NULL) return(ENXIO); cam_periph_lock(periph); CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering chioctl\n")); softc = (struct ch_softc *)periph->softc; error = 0; CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("trying to do ioctl %#lx\n", cmd)); /* * If this command can change the device's state, we must * have the device open for writing. */ switch (cmd) { case CHIOGPICKER: case CHIOGPARAMS: case CHIOGSTATUS: break; default: if ((flag & FWRITE) == 0) { cam_periph_unlock(periph); return (EBADF); } } switch (cmd) { case CHIOMOVE: error = chmove(periph, (struct changer_move *)addr); break; case CHIOEXCHANGE: error = chexchange(periph, (struct changer_exchange *)addr); break; case CHIOPOSITION: error = chposition(periph, (struct changer_position *)addr); break; case CHIOGPICKER: *(int *)addr = softc->sc_picker - softc->sc_firsts[CHET_MT]; break; case CHIOSPICKER: { int new_picker = *(int *)addr; if (new_picker > (softc->sc_counts[CHET_MT] - 1)) { error = EINVAL; break; } softc->sc_picker = softc->sc_firsts[CHET_MT] + new_picker; break; } case CHIOGPARAMS: { struct changer_params *cp = (struct changer_params *)addr; cp->cp_npickers = softc->sc_counts[CHET_MT]; cp->cp_nslots = softc->sc_counts[CHET_ST]; cp->cp_nportals = softc->sc_counts[CHET_IE]; cp->cp_ndrives = softc->sc_counts[CHET_DT]; break; } case CHIOIELEM: error = chielem(periph, *(unsigned int *)addr); break; case CHIOGSTATUS: { error = chgetelemstatus(periph, (struct changer_element_status_request *) addr); break; } case CHIOSETVOLTAG: { error = chsetvoltag(periph, (struct changer_set_voltag_request *) addr); break; } /* Implement prevent/allow? */ default: error = cam_periph_ioctl(periph, cmd, addr, cherror); break; } cam_periph_unlock(periph); return (error); } static int chmove(struct cam_periph *periph, struct changer_move *cm) { struct ch_softc *softc; u_int16_t fromelem, toelem; union ccb *ccb; int error; error = 0; softc = (struct ch_softc *)periph->softc; /* * Check arguments. */ if ((cm->cm_fromtype > CHET_DT) || (cm->cm_totype > CHET_DT)) return (EINVAL); if ((cm->cm_fromunit > (softc->sc_counts[cm->cm_fromtype] - 1)) || (cm->cm_tounit > (softc->sc_counts[cm->cm_totype] - 1))) return (ENODEV); /* * Check the request against the changer's capabilities. */ if ((softc->sc_movemask[cm->cm_fromtype] & (1 << cm->cm_totype)) == 0) return (ENODEV); /* * Calculate the source and destination elements. */ fromelem = softc->sc_firsts[cm->cm_fromtype] + cm->cm_fromunit; toelem = softc->sc_firsts[cm->cm_totype] + cm->cm_tounit; ccb = cam_periph_getccb(periph, /*priority*/ 1); scsi_move_medium(&ccb->csio, /* retries */ 1, /* cbfcnp */ chdone, /* tag_action */ MSG_SIMPLE_Q_TAG, /* tea */ softc->sc_picker, /* src */ fromelem, /* dst */ toelem, /* invert */ (cm->cm_flags & CM_INVERT) ? TRUE : FALSE, /* sense_len */ SSD_FULL_SIZE, /* timeout */ CH_TIMEOUT_MOVE_MEDIUM); error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO, /*sense_flags*/ SF_RETRY_UA, softc->device_stats); xpt_release_ccb(ccb); return(error); } static int chexchange(struct cam_periph *periph, struct changer_exchange *ce) { struct ch_softc *softc; u_int16_t src, dst1, dst2; union ccb *ccb; int error; error = 0; softc = (struct ch_softc *)periph->softc; /* * Check arguments. */ if ((ce->ce_srctype > CHET_DT) || (ce->ce_fdsttype > CHET_DT) || (ce->ce_sdsttype > CHET_DT)) return (EINVAL); if ((ce->ce_srcunit > (softc->sc_counts[ce->ce_srctype] - 1)) || (ce->ce_fdstunit > (softc->sc_counts[ce->ce_fdsttype] - 1)) || (ce->ce_sdstunit > (softc->sc_counts[ce->ce_sdsttype] - 1))) return (ENODEV); /* * Check the request against the changer's capabilities. */ if (((softc->sc_exchangemask[ce->ce_srctype] & (1 << ce->ce_fdsttype)) == 0) || ((softc->sc_exchangemask[ce->ce_fdsttype] & (1 << ce->ce_sdsttype)) == 0)) return (ENODEV); /* * Calculate the source and destination elements. */ src = softc->sc_firsts[ce->ce_srctype] + ce->ce_srcunit; dst1 = softc->sc_firsts[ce->ce_fdsttype] + ce->ce_fdstunit; dst2 = softc->sc_firsts[ce->ce_sdsttype] + ce->ce_sdstunit; ccb = cam_periph_getccb(periph, /*priority*/ 1); scsi_exchange_medium(&ccb->csio, /* retries */ 1, /* cbfcnp */ chdone, /* tag_action */ MSG_SIMPLE_Q_TAG, /* tea */ softc->sc_picker, /* src */ src, /* dst1 */ dst1, /* dst2 */ dst2, /* invert1 */ (ce->ce_flags & CE_INVERT1) ? TRUE : FALSE, /* invert2 */ (ce->ce_flags & CE_INVERT2) ? TRUE : FALSE, /* sense_len */ SSD_FULL_SIZE, /* timeout */ CH_TIMEOUT_EXCHANGE_MEDIUM); error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO, /*sense_flags*/ SF_RETRY_UA, softc->device_stats); xpt_release_ccb(ccb); return(error); } static int chposition(struct cam_periph *periph, struct changer_position *cp) { struct ch_softc *softc; u_int16_t dst; union ccb *ccb; int error; error = 0; softc = (struct ch_softc *)periph->softc; /* * Check arguments. */ if (cp->cp_type > CHET_DT) return (EINVAL); if (cp->cp_unit > (softc->sc_counts[cp->cp_type] - 1)) return (ENODEV); /* * Calculate the destination element. */ dst = softc->sc_firsts[cp->cp_type] + cp->cp_unit; ccb = cam_periph_getccb(periph, /*priority*/ 1); scsi_position_to_element(&ccb->csio, /* retries */ 1, /* cbfcnp */ chdone, /* tag_action */ MSG_SIMPLE_Q_TAG, /* tea */ softc->sc_picker, /* dst */ dst, /* invert */ (cp->cp_flags & CP_INVERT) ? TRUE : FALSE, /* sense_len */ SSD_FULL_SIZE, /* timeout */ CH_TIMEOUT_POSITION_TO_ELEMENT); error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, /*sense_flags*/ SF_RETRY_UA, softc->device_stats); xpt_release_ccb(ccb); return(error); } /* * Copy a volume tag to a volume_tag struct, converting SCSI byte order * to host native byte order in the volume serial number. The volume * label as returned by the changer is transferred to user mode as * nul-terminated string. Volume labels are truncated at the first * space, as suggested by SCSI-2. */ static void copy_voltag(struct changer_voltag *uvoltag, struct volume_tag *voltag) { int i; for (i=0; ivif[i]; if (c && c != ' ') uvoltag->cv_volid[i] = c; else break; } uvoltag->cv_serial = scsi_2btoul(voltag->vsn); } /* * Copy an an element status descriptor to a user-mode * changer_element_status structure. */ static void copy_element_status(struct ch_softc *softc, u_int16_t flags, struct read_element_status_descriptor *desc, struct changer_element_status *ces) { u_int16_t eaddr = scsi_2btoul(desc->eaddr); u_int16_t et; ces->ces_int_addr = eaddr; /* set up logical address in element status */ for (et = CHET_MT; et <= CHET_DT; et++) { if ((softc->sc_firsts[et] <= eaddr) && ((softc->sc_firsts[et] + softc->sc_counts[et]) > eaddr)) { ces->ces_addr = eaddr - softc->sc_firsts[et]; ces->ces_type = et; break; } } ces->ces_flags = desc->flags1; ces->ces_sensecode = desc->sense_code; ces->ces_sensequal = desc->sense_qual; if (desc->flags2 & READ_ELEMENT_STATUS_INVERT) ces->ces_flags |= CES_INVERT; if (desc->flags2 & READ_ELEMENT_STATUS_SVALID) { eaddr = scsi_2btoul(desc->ssea); /* convert source address to logical format */ for (et = CHET_MT; et <= CHET_DT; et++) { if ((softc->sc_firsts[et] <= eaddr) && ((softc->sc_firsts[et] + softc->sc_counts[et]) > eaddr)) { ces->ces_source_addr = eaddr - softc->sc_firsts[et]; ces->ces_source_type = et; ces->ces_flags |= CES_SOURCE_VALID; break; } } if (!(ces->ces_flags & CES_SOURCE_VALID)) printf("ch: warning: could not map element source " "address %ud to a valid element type\n", eaddr); } if (flags & READ_ELEMENT_STATUS_PVOLTAG) copy_voltag(&(ces->ces_pvoltag), &(desc->pvoltag)); if (flags & READ_ELEMENT_STATUS_AVOLTAG) copy_voltag(&(ces->ces_avoltag), &(desc->avoltag)); if (desc->dt_scsi_flags & READ_ELEMENT_STATUS_DT_IDVALID) { ces->ces_flags |= CES_SCSIID_VALID; ces->ces_scsi_id = desc->dt_scsi_addr; } if (desc->dt_scsi_addr & READ_ELEMENT_STATUS_DT_LUVALID) { ces->ces_flags |= CES_LUN_VALID; ces->ces_scsi_lun = desc->dt_scsi_flags & READ_ELEMENT_STATUS_DT_LUNMASK; } } static int chgetelemstatus(struct cam_periph *periph, struct changer_element_status_request *cesr) { struct read_element_status_header *st_hdr; struct read_element_status_page_header *pg_hdr; struct read_element_status_descriptor *desc; caddr_t data = NULL; size_t size, desclen; int avail, i, error = 0; struct changer_element_status *user_data = NULL; struct ch_softc *softc; union ccb *ccb; int chet = cesr->cesr_element_type; int want_voltags = (cesr->cesr_flags & CESR_VOLTAGS) ? 1 : 0; softc = (struct ch_softc *)periph->softc; /* perform argument checking */ /* * Perform a range check on the cesr_element_{base,count} * request argument fields. */ if ((softc->sc_counts[chet] - cesr->cesr_element_base) <= 0 || (cesr->cesr_element_base + cesr->cesr_element_count) > softc->sc_counts[chet]) return (EINVAL); /* * Request one descriptor for the given element type. This * is used to determine the size of the descriptor so that * we can allocate enough storage for all of them. We assume * that the first one can fit into 1k. */ cam_periph_unlock(periph); data = (caddr_t)malloc(1024, M_DEVBUF, M_WAITOK); cam_periph_lock(periph); ccb = cam_periph_getccb(periph, /*priority*/ 1); scsi_read_element_status(&ccb->csio, /* retries */ 1, /* cbfcnp */ chdone, /* tag_action */ MSG_SIMPLE_Q_TAG, /* voltag */ want_voltags, /* sea */ softc->sc_firsts[chet], /* count */ 1, /* data_ptr */ data, /* dxfer_len */ 1024, /* sense_len */ SSD_FULL_SIZE, /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS); error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, /*sense_flags*/ SF_RETRY_UA, softc->device_stats); if (error) goto done; cam_periph_unlock(periph); st_hdr = (struct read_element_status_header *)data; pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr + sizeof(struct read_element_status_header)); desclen = scsi_2btoul(pg_hdr->edl); size = sizeof(struct read_element_status_header) + sizeof(struct read_element_status_page_header) + (desclen * cesr->cesr_element_count); /* * Reallocate storage for descriptors and get them from the * device. */ free(data, M_DEVBUF); data = (caddr_t)malloc(size, M_DEVBUF, M_WAITOK); cam_periph_lock(periph); scsi_read_element_status(&ccb->csio, /* retries */ 1, /* cbfcnp */ chdone, /* tag_action */ MSG_SIMPLE_Q_TAG, /* voltag */ want_voltags, /* sea */ softc->sc_firsts[chet] + cesr->cesr_element_base, /* count */ cesr->cesr_element_count, /* data_ptr */ data, /* dxfer_len */ size, /* sense_len */ SSD_FULL_SIZE, /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS); error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, /*sense_flags*/ SF_RETRY_UA, softc->device_stats); if (error) goto done; cam_periph_unlock(periph); /* * Fill in the user status array. */ st_hdr = (struct read_element_status_header *)data; pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr + sizeof(struct read_element_status_header)); avail = scsi_2btoul(st_hdr->count); if (avail != cesr->cesr_element_count) { xpt_print(periph->path, "warning, READ ELEMENT STATUS avail != count\n"); } user_data = (struct changer_element_status *) malloc(avail * sizeof(struct changer_element_status), M_DEVBUF, M_WAITOK | M_ZERO); desc = (struct read_element_status_descriptor *)((uintptr_t)data + sizeof(struct read_element_status_header) + sizeof(struct read_element_status_page_header)); /* * Set up the individual element status structures */ for (i = 0; i < avail; ++i) { struct changer_element_status *ces = &(user_data[i]); copy_element_status(softc, pg_hdr->flags, desc, ces); desc = (struct read_element_status_descriptor *) ((uintptr_t)desc + desclen); } /* Copy element status structures out to userspace. */ error = copyout(user_data, cesr->cesr_element_status, avail * sizeof(struct changer_element_status)); cam_periph_lock(periph); done: xpt_release_ccb(ccb); if (data != NULL) free(data, M_DEVBUF); if (user_data != NULL) free(user_data, M_DEVBUF); return (error); } static int chielem(struct cam_periph *periph, unsigned int timeout) { union ccb *ccb; struct ch_softc *softc; int error; if (!timeout) { timeout = CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS; } else { timeout *= 1000; } error = 0; softc = (struct ch_softc *)periph->softc; ccb = cam_periph_getccb(periph, /*priority*/ 1); scsi_initialize_element_status(&ccb->csio, /* retries */ 1, /* cbfcnp */ chdone, /* tag_action */ MSG_SIMPLE_Q_TAG, /* sense_len */ SSD_FULL_SIZE, /* timeout */ timeout); error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, /*sense_flags*/ SF_RETRY_UA, softc->device_stats); xpt_release_ccb(ccb); return(error); } static int chsetvoltag(struct cam_periph *periph, struct changer_set_voltag_request *csvr) { union ccb *ccb; struct ch_softc *softc; u_int16_t ea; u_int8_t sac; struct scsi_send_volume_tag_parameters ssvtp; int error; int i; error = 0; softc = (struct ch_softc *)periph->softc; bzero(&ssvtp, sizeof(ssvtp)); for (i=0; icsvr_type > CHET_DT) return EINVAL; if (csvr->csvr_addr > (softc->sc_counts[csvr->csvr_type] - 1)) return ENODEV; ea = softc->sc_firsts[csvr->csvr_type] + csvr->csvr_addr; if (csvr->csvr_flags & CSVR_ALTERNATE) { switch (csvr->csvr_flags & CSVR_MODE_MASK) { case CSVR_MODE_SET: sac = SEND_VOLUME_TAG_ASSERT_ALTERNATE; break; case CSVR_MODE_REPLACE: sac = SEND_VOLUME_TAG_REPLACE_ALTERNATE; break; case CSVR_MODE_CLEAR: sac = SEND_VOLUME_TAG_UNDEFINED_ALTERNATE; break; default: error = EINVAL; goto out; } } else { switch (csvr->csvr_flags & CSVR_MODE_MASK) { case CSVR_MODE_SET: sac = SEND_VOLUME_TAG_ASSERT_PRIMARY; break; case CSVR_MODE_REPLACE: sac = SEND_VOLUME_TAG_REPLACE_PRIMARY; break; case CSVR_MODE_CLEAR: sac = SEND_VOLUME_TAG_UNDEFINED_PRIMARY; break; default: error = EINVAL; goto out; } } memcpy(ssvtp.vitf, csvr->csvr_voltag.cv_volid, min(strlen(csvr->csvr_voltag.cv_volid), sizeof(ssvtp.vitf))); scsi_ulto2b(csvr->csvr_voltag.cv_serial, ssvtp.minvsn); ccb = cam_periph_getccb(periph, /*priority*/ 1); scsi_send_volume_tag(&ccb->csio, /* retries */ 1, /* cbfcnp */ chdone, /* tag_action */ MSG_SIMPLE_Q_TAG, /* element_address */ ea, /* send_action_code */ sac, /* parameters */ &ssvtp, /* sense_len */ SSD_FULL_SIZE, /* timeout */ CH_TIMEOUT_SEND_VOLTAG); error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, /*sense_flags*/ SF_RETRY_UA, softc->device_stats); xpt_release_ccb(ccb); out: return error; } static int chgetparams(struct cam_periph *periph) { union ccb *ccb; struct ch_softc *softc; void *mode_buffer; int mode_buffer_len; struct page_element_address_assignment *ea; struct page_device_capabilities *cap; int error, from, dbd; u_int8_t *moves, *exchanges; error = 0; softc = (struct ch_softc *)periph->softc; ccb = cam_periph_getccb(periph, /*priority*/ 1); /* * The scsi_mode_sense_data structure is just a convenience * structure that allows us to easily calculate the worst-case * storage size of the mode sense buffer. */ mode_buffer_len = sizeof(struct scsi_mode_sense_data); mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT); if (mode_buffer == NULL) { printf("chgetparams: couldn't malloc mode sense data\n"); return(ENOSPC); } bzero(mode_buffer, mode_buffer_len); if (softc->quirks & CH_Q_NO_DBD) dbd = FALSE; else dbd = TRUE; /* * Get the element address assignment page. */ scsi_mode_sense(&ccb->csio, /* retries */ 1, /* cbfcnp */ chdone, /* tag_action */ MSG_SIMPLE_Q_TAG, /* dbd */ dbd, /* page_code */ SMS_PAGE_CTRL_CURRENT, /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE, /* param_buf */ (u_int8_t *)mode_buffer, /* param_len */ mode_buffer_len, /* sense_len */ SSD_FULL_SIZE, /* timeout */ CH_TIMEOUT_MODE_SENSE); error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, /* sense_flags */ SF_RETRY_UA|SF_NO_PRINT, softc->device_stats); if (error) { if (dbd) { struct scsi_mode_sense_6 *sms; sms = (struct scsi_mode_sense_6 *) ccb->csio.cdb_io.cdb_bytes; sms->byte2 &= ~SMS_DBD; error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, /*sense_flags*/ SF_RETRY_UA, softc->device_stats); } else { /* * Since we disabled sense printing above, print * out the sense here since we got an error. */ scsi_sense_print(&ccb->csio); } if (error) { xpt_print(periph->path, "chgetparams: error getting element " "address page\n"); xpt_release_ccb(ccb); free(mode_buffer, M_SCSICH); return(error); } } ea = (struct page_element_address_assignment *) find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer); softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea); softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte); softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea); softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse); softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea); softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee); softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea); softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte); bzero(mode_buffer, mode_buffer_len); /* * Now get the device capabilities page. */ scsi_mode_sense(&ccb->csio, /* retries */ 1, /* cbfcnp */ chdone, /* tag_action */ MSG_SIMPLE_Q_TAG, /* dbd */ dbd, /* page_code */ SMS_PAGE_CTRL_CURRENT, /* page */ CH_DEVICE_CAP_PAGE, /* param_buf */ (u_int8_t *)mode_buffer, /* param_len */ mode_buffer_len, /* sense_len */ SSD_FULL_SIZE, /* timeout */ CH_TIMEOUT_MODE_SENSE); error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, /* sense_flags */ SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); if (error) { if (dbd) { struct scsi_mode_sense_6 *sms; sms = (struct scsi_mode_sense_6 *) ccb->csio.cdb_io.cdb_bytes; sms->byte2 &= ~SMS_DBD; error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, /*sense_flags*/ SF_RETRY_UA, softc->device_stats); } else { /* * Since we disabled sense printing above, print * out the sense here since we got an error. */ scsi_sense_print(&ccb->csio); } if (error) { xpt_print(periph->path, "chgetparams: error getting device " "capabilities page\n"); xpt_release_ccb(ccb); free(mode_buffer, M_SCSICH); return(error); } } xpt_release_ccb(ccb); cap = (struct page_device_capabilities *) find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer); bzero(softc->sc_movemask, sizeof(softc->sc_movemask)); bzero(softc->sc_exchangemask, sizeof(softc->sc_exchangemask)); moves = cap->move_from; exchanges = cap->exchange_with; for (from = CHET_MT; from <= CHET_MAX; ++from) { softc->sc_movemask[from] = moves[from]; softc->sc_exchangemask[from] = exchanges[from]; } free(mode_buffer, M_SCSICH); return(error); } void scsi_move_medium(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), u_int8_t tag_action, u_int32_t tea, u_int32_t src, u_int32_t dst, int invert, u_int8_t sense_len, u_int32_t timeout) { struct scsi_move_medium *scsi_cmd; scsi_cmd = (struct scsi_move_medium *)&csio->cdb_io.cdb_bytes; bzero(scsi_cmd, sizeof(*scsi_cmd)); scsi_cmd->opcode = MOVE_MEDIUM; scsi_ulto2b(tea, scsi_cmd->tea); scsi_ulto2b(src, scsi_cmd->src); scsi_ulto2b(dst, scsi_cmd->dst); if (invert) scsi_cmd->invert |= MOVE_MEDIUM_INVERT; cam_fill_csio(csio, retries, cbfcnp, /*flags*/ CAM_DIR_NONE, tag_action, /*data_ptr*/ NULL, /*dxfer_len*/ 0, sense_len, sizeof(*scsi_cmd), timeout); } void scsi_exchange_medium(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), u_int8_t tag_action, u_int32_t tea, u_int32_t src, u_int32_t dst1, u_int32_t dst2, int invert1, int invert2, u_int8_t sense_len, u_int32_t timeout) { struct scsi_exchange_medium *scsi_cmd; scsi_cmd = (struct scsi_exchange_medium *)&csio->cdb_io.cdb_bytes; bzero(scsi_cmd, sizeof(*scsi_cmd)); scsi_cmd->opcode = EXCHANGE_MEDIUM; scsi_ulto2b(tea, scsi_cmd->tea); scsi_ulto2b(src, scsi_cmd->src); scsi_ulto2b(dst1, scsi_cmd->fdst); scsi_ulto2b(dst2, scsi_cmd->sdst); if (invert1) scsi_cmd->invert |= EXCHANGE_MEDIUM_INV1; if (invert2) scsi_cmd->invert |= EXCHANGE_MEDIUM_INV2; cam_fill_csio(csio, retries, cbfcnp, /*flags*/ CAM_DIR_NONE, tag_action, /*data_ptr*/ NULL, /*dxfer_len*/ 0, sense_len, sizeof(*scsi_cmd), timeout); } void scsi_position_to_element(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), u_int8_t tag_action, u_int32_t tea, u_int32_t dst, int invert, u_int8_t sense_len, u_int32_t timeout) { struct scsi_position_to_element *scsi_cmd; scsi_cmd = (struct scsi_position_to_element *)&csio->cdb_io.cdb_bytes; bzero(scsi_cmd, sizeof(*scsi_cmd)); scsi_cmd->opcode = POSITION_TO_ELEMENT; scsi_ulto2b(tea, scsi_cmd->tea); scsi_ulto2b(dst, scsi_cmd->dst); if (invert) scsi_cmd->invert |= POSITION_TO_ELEMENT_INVERT; cam_fill_csio(csio, retries, cbfcnp, /*flags*/ CAM_DIR_NONE, tag_action, /*data_ptr*/ NULL, /*dxfer_len*/ 0, sense_len, sizeof(*scsi_cmd), timeout); } void scsi_read_element_status(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), u_int8_t tag_action, int voltag, u_int32_t sea, u_int32_t count, u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) { struct scsi_read_element_status *scsi_cmd; scsi_cmd = (struct scsi_read_element_status *)&csio->cdb_io.cdb_bytes; bzero(scsi_cmd, sizeof(*scsi_cmd)); scsi_cmd->opcode = READ_ELEMENT_STATUS; scsi_ulto2b(sea, scsi_cmd->sea); scsi_ulto2b(count, scsi_cmd->count); scsi_ulto3b(dxfer_len, scsi_cmd->len); if (voltag) scsi_cmd->byte2 |= READ_ELEMENT_STATUS_VOLTAG; cam_fill_csio(csio, retries, cbfcnp, /*flags*/ CAM_DIR_IN, tag_action, data_ptr, dxfer_len, sense_len, sizeof(*scsi_cmd), timeout); } void scsi_initialize_element_status(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), u_int8_t tag_action, u_int8_t sense_len, u_int32_t timeout) { struct scsi_initialize_element_status *scsi_cmd; scsi_cmd = (struct scsi_initialize_element_status *) &csio->cdb_io.cdb_bytes; bzero(scsi_cmd, sizeof(*scsi_cmd)); scsi_cmd->opcode = INITIALIZE_ELEMENT_STATUS; cam_fill_csio(csio, retries, cbfcnp, /*flags*/ CAM_DIR_NONE, tag_action, /* data_ptr */ NULL, /* dxfer_len */ 0, sense_len, sizeof(*scsi_cmd), timeout); } void scsi_send_volume_tag(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), u_int8_t tag_action, u_int16_t element_address, u_int8_t send_action_code, struct scsi_send_volume_tag_parameters *parameters, u_int8_t sense_len, u_int32_t timeout) { struct scsi_send_volume_tag *scsi_cmd; scsi_cmd = (struct scsi_send_volume_tag *) &csio->cdb_io.cdb_bytes; bzero(scsi_cmd, sizeof(*scsi_cmd)); scsi_cmd->opcode = SEND_VOLUME_TAG; scsi_ulto2b(element_address, scsi_cmd->ea); scsi_cmd->sac = send_action_code; scsi_ulto2b(sizeof(*parameters), scsi_cmd->pll); cam_fill_csio(csio, retries, cbfcnp, /*flags*/ CAM_DIR_OUT, tag_action, /* data_ptr */ (u_int8_t *) parameters, sizeof(*parameters), sense_len, sizeof(*scsi_cmd), timeout); }