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Annotation of sys/scsi/scsi_base.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: scsi_base.c,v 1.122 2007/06/23 19:19:49 krw Exp $     */
        !             2: /*     $NetBSD: scsi_base.c,v 1.43 1997/04/02 02:29:36 mycroft Exp $   */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1994, 1995, 1997 Charles M. Hannum.  All rights reserved.
        !             6:  *
        !             7:  * Redistribution and use in source and binary forms, with or without
        !             8:  * modification, are permitted provided that the following conditions
        !             9:  * are met:
        !            10:  * 1. Redistributions of source code must retain the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer.
        !            12:  * 2. Redistributions in binary form must reproduce the above copyright
        !            13:  *    notice, this list of conditions and the following disclaimer in the
        !            14:  *    documentation and/or other materials provided with the distribution.
        !            15:  * 3. All advertising materials mentioning features or use of this software
        !            16:  *    must display the following acknowledgement:
        !            17:  *     This product includes software developed by Charles M. Hannum.
        !            18:  * 4. 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 ``AS IS'' AND ANY EXPRESS OR
        !            22:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
        !            23:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            24:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
        !            25:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
        !            26:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
        !            27:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
        !            28:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
        !            29:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
        !            30:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            31:  */
        !            32:
        !            33: /*
        !            34:  * Originally written by Julian Elischer (julian@dialix.oz.au)
        !            35:  * Detailed SCSI error printing Copyright 1997 by Matthew Jacob.
        !            36:  */
        !            37:
        !            38: #include <sys/types.h>
        !            39: #include <sys/param.h>
        !            40: #include <sys/systm.h>
        !            41: #include <sys/kernel.h>
        !            42: #include <sys/buf.h>
        !            43: #include <sys/uio.h>
        !            44: #include <sys/malloc.h>
        !            45: #include <sys/errno.h>
        !            46: #include <sys/device.h>
        !            47: #include <sys/proc.h>
        !            48: #include <sys/pool.h>
        !            49:
        !            50: #include <scsi/scsi_all.h>
        !            51: #include <scsi/scsi_disk.h>
        !            52: #include <scsi/scsiconf.h>
        !            53:
        !            54: static __inline struct scsi_xfer *scsi_make_xs(struct scsi_link *,
        !            55:     struct scsi_generic *, int cmdlen, u_char *data_addr,
        !            56:     int datalen, int retries, int timeout, struct buf *, int flags);
        !            57: static __inline void asc2ascii(u_int8_t, u_int8_t ascq, char *result,
        !            58:     size_t len);
        !            59: int    sc_err1(struct scsi_xfer *);
        !            60: int    scsi_interpret_sense(struct scsi_xfer *);
        !            61: char   *scsi_decode_sense(struct scsi_sense_data *, int);
        !            62:
        !            63: /* Values for flag parameter to scsi_decode_sense. */
        !            64: #define        DECODE_SENSE_KEY        1
        !            65: #define        DECODE_ASC_ASCQ         2
        !            66: #define DECODE_SKSV            3
        !            67:
        !            68: int                    scsi_running = 0;
        !            69: struct pool            scsi_xfer_pool;
        !            70:
        !            71: /*
        !            72:  * Called when a scsibus is attached to initialize global data.
        !            73:  */
        !            74: void
        !            75: scsi_init()
        !            76: {
        !            77:        if (scsi_running++)
        !            78:                return;
        !            79:
        !            80: #if defined(SCSI_DELAY) && SCSI_DELAY > 0
        !            81:        /* Historical. Older buses may need a moment to stabilize. */
        !            82:        delay(1000000 * SCSI_DELAY);
        !            83: #endif
        !            84:
        !            85:        /* Initialize the scsi_xfer pool. */
        !            86:        pool_init(&scsi_xfer_pool, sizeof(struct scsi_xfer), 0,
        !            87:            0, 0, "scxspl", NULL);
        !            88: }
        !            89:
        !            90: void
        !            91: scsi_deinit()
        !            92: {
        !            93:        if (--scsi_running)
        !            94:                return;
        !            95: }
        !            96:
        !            97: /*
        !            98:  * Get a scsi transfer structure for the caller. Charge the structure
        !            99:  * to the device that is referenced by the sc_link structure. If the
        !           100:  * sc_link structure has no 'credits' then the device already has the
        !           101:  * maximum number or outstanding operations under way. In this stage,
        !           102:  * wait on the structure so that when one is freed, we are awoken again
        !           103:  * If the SCSI_NOSLEEP flag is set, then do not wait, but rather, return
        !           104:  * a NULL pointer, signifying that no slots were available
        !           105:  * Note in the link structure, that we are waiting on it.
        !           106:  */
        !           107:
        !           108: struct scsi_xfer *
        !           109: scsi_get_xs(struct scsi_link *sc_link, int flags)
        !           110: {
        !           111:        struct scsi_xfer                *xs;
        !           112:        int                             s;
        !           113:
        !           114:        SC_DEBUG(sc_link, SDEV_DB3, ("scsi_get_xs\n"));
        !           115:
        !           116:        s = splbio();
        !           117:        while (sc_link->openings == 0) {
        !           118:                SC_DEBUG(sc_link, SDEV_DB3, ("sleeping\n"));
        !           119:                if ((flags & SCSI_NOSLEEP) != 0) {
        !           120:                        splx(s);
        !           121:                        return (NULL);
        !           122:                }
        !           123:                sc_link->flags |= SDEV_WAITING;
        !           124:                if (tsleep(sc_link, PRIBIO|PCATCH, "getxs", 0)) {
        !           125:                        /* Bail out on getting a signal. */
        !           126:                        sc_link->flags &= ~SDEV_WAITING;
        !           127:                        splx(s);
        !           128:                        return (NULL);
        !           129:                }
        !           130:        }
        !           131:        SC_DEBUG(sc_link, SDEV_DB3, ("calling pool_get\n"));
        !           132:        xs = pool_get(&scsi_xfer_pool,
        !           133:            ((flags & SCSI_NOSLEEP) != 0 ? PR_NOWAIT : PR_WAITOK));
        !           134:        if (xs != NULL) {
        !           135:                bzero(xs, sizeof(*xs));
        !           136:                sc_link->openings--;
        !           137:                xs->flags = flags;
        !           138:        } else {
        !           139:                sc_print_addr(sc_link);
        !           140:                printf("cannot allocate scsi xs\n");
        !           141:        }
        !           142:        splx(s);
        !           143:
        !           144:        SC_DEBUG(sc_link, SDEV_DB3, ("returning\n"));
        !           145:
        !           146:        return (xs);
        !           147: }
        !           148:
        !           149: /*
        !           150:  * Given a scsi_xfer struct, and a device (referenced through sc_link)
        !           151:  * return the struct to the free pool and credit the device with it
        !           152:  * If another process is waiting for an xs, do a wakeup, let it proceed
        !           153:  */
        !           154: void
        !           155: scsi_free_xs(struct scsi_xfer *xs, int start)
        !           156: {
        !           157:        struct scsi_link *sc_link = xs->sc_link;
        !           158:
        !           159:        splassert(IPL_BIO);
        !           160:
        !           161:        SC_DEBUG(sc_link, SDEV_DB3, ("scsi_free_xs\n"));
        !           162:
        !           163:        pool_put(&scsi_xfer_pool, xs);
        !           164:        sc_link->openings++;
        !           165:
        !           166:        /* If someone is waiting for scsi_xfer, wake them up. */
        !           167:        if ((sc_link->flags & SDEV_WAITING) != 0) {
        !           168:                sc_link->flags &= ~SDEV_WAITING;
        !           169:                wakeup(sc_link);
        !           170:        } else if (start && sc_link->device->start) {
        !           171:                SC_DEBUG(sc_link, SDEV_DB2,
        !           172:                    ("calling private start()\n"));
        !           173:                (*(sc_link->device->start)) (sc_link->device_softc);
        !           174:        }
        !           175: }
        !           176:
        !           177: /*
        !           178:  * Make a scsi_xfer, and return a pointer to it.
        !           179:  */
        !           180: static __inline struct scsi_xfer *
        !           181: scsi_make_xs(struct scsi_link *sc_link, struct scsi_generic *scsi_cmd,
        !           182:     int cmdlen, u_char *data_addr, int datalen, int retries, int timeout,
        !           183:     struct buf *bp, int flags)
        !           184: {
        !           185:        struct scsi_xfer                *xs;
        !           186:
        !           187:        if ((xs = scsi_get_xs(sc_link, flags)) == NULL)
        !           188:                return (NULL);
        !           189:
        !           190:        /*
        !           191:         * Fill out the scsi_xfer structure.  We don't know whose context
        !           192:         * the cmd is in, so copy it.
        !           193:         */
        !           194:        xs->sc_link = sc_link;
        !           195:        bcopy(scsi_cmd, &xs->cmdstore, cmdlen);
        !           196:        xs->cmd = &xs->cmdstore;
        !           197:        xs->cmdlen = cmdlen;
        !           198:        xs->data = data_addr;
        !           199:        xs->datalen = datalen;
        !           200:        xs->retries = retries;
        !           201:        xs->timeout = timeout;
        !           202:        xs->bp = bp;
        !           203:
        !           204:        /*
        !           205:         * Set the LUN in the CDB if it fits in the three bits available. This
        !           206:         * may only be needed if we have an older device.  However, we also set
        !           207:         * it for more modern SCSI devices "just in case".  The old code
        !           208:         * assumed everything newer than SCSI-2 would not need it, but why risk
        !           209:         * it?  This was the old conditional:
        !           210:         *
        !           211:         * if ((SCSISPC(sc_link->inqdata.version) <= 2))
        !           212:         */
        !           213:        xs->cmd->bytes[0] &= ~SCSI_CMD_LUN_MASK;
        !           214:        if (sc_link->lun < 8)
        !           215:                xs->cmd->bytes[0] |= ((sc_link->lun << SCSI_CMD_LUN_SHIFT) &
        !           216:                    SCSI_CMD_LUN_MASK);
        !           217:
        !           218:        return (xs);
        !           219: }
        !           220:
        !           221: /*
        !           222:  * Find out from the device what its capacity is.
        !           223:  */
        !           224: daddr64_t
        !           225: scsi_size(struct scsi_link *sc_link, int flags, u_int32_t *blksize)
        !           226: {
        !           227:        struct scsi_read_cap_data_16 rdcap16;
        !           228:        struct scsi_read_capacity_16 rc16;
        !           229:        struct scsi_read_cap_data rdcap;
        !           230:        struct scsi_read_capacity rc;
        !           231:        daddr64_t max_addr;
        !           232:        int error;
        !           233:
        !           234:        if (blksize != NULL)
        !           235:                *blksize = 0;
        !           236:
        !           237:        /*
        !           238:         * make up a scsi command and ask the scsi driver to do it for you.
        !           239:         */
        !           240:        bzero(&rc, sizeof(rc));
        !           241:        bzero(&rdcap, sizeof(rdcap));
        !           242:        rc.opcode = READ_CAPACITY;
        !           243:
        !           244:        /*
        !           245:         * If the command works, interpret the result as a 4 byte
        !           246:         * number of blocks
        !           247:         */
        !           248:        error = scsi_scsi_cmd(sc_link, (struct scsi_generic *)&rc, sizeof(rc),
        !           249:            (u_char *)&rdcap, sizeof(rdcap), 2, 20000, NULL,
        !           250:            flags | SCSI_DATA_IN);
        !           251:        if (error) {
        !           252:                SC_DEBUG(sc_link, SDEV_DB1, ("READ CAPACITY error (%#x)\n",
        !           253:                    error));
        !           254:                return (0);
        !           255:        }
        !           256:
        !           257:        max_addr = _4btol(rdcap.addr);
        !           258:        if (blksize != NULL)
        !           259:                *blksize = _4btol(rdcap.length);
        !           260:
        !           261:        if (max_addr != 0xffffffff)
        !           262:                return (max_addr + 1);
        !           263:
        !           264:        /*
        !           265:         * The device has more than 2^32-1 sectors. Use 16-byte READ CAPACITY.
        !           266:         */
        !           267:         bzero(&rc16, sizeof(rc16));
        !           268:         bzero(&rdcap16, sizeof(rdcap16));
        !           269:         rc16.opcode = READ_CAPACITY_16;
        !           270:         rc16.byte2 = SRC16_SERVICE_ACTION;
        !           271:         _lto4b(sizeof(rdcap16), rc16.length);
        !           272:
        !           273:        error = scsi_scsi_cmd(sc_link, (struct scsi_generic *)&rc16,
        !           274:            sizeof(rc16), (u_char *)&rdcap16, sizeof(rdcap16), 2, 20000, NULL,
        !           275:            flags | SCSI_DATA_IN);
        !           276:        if (error) {
        !           277:                SC_DEBUG(sc_link, SDEV_DB1, ("READ CAPACITY 16 error (%#x)\n",
        !           278:                    error));
        !           279:                return (0);
        !           280:        }
        !           281:
        !           282:        max_addr = _8btol(rdcap16.addr);
        !           283:        if (blksize != NULL)
        !           284:                *blksize = _4btol(rdcap16.length);
        !           285:
        !           286:        return (max_addr + 1);
        !           287: }
        !           288:
        !           289: /*
        !           290:  * Get scsi driver to send a "are you ready?" command
        !           291:  */
        !           292: int
        !           293: scsi_test_unit_ready(struct scsi_link *sc_link, int retries, int flags)
        !           294: {
        !           295:        struct scsi_test_unit_ready             scsi_cmd;
        !           296:
        !           297:        if (sc_link->quirks & ADEV_NOTUR)
        !           298:                return (0);
        !           299:
        !           300:        bzero(&scsi_cmd, sizeof(scsi_cmd));
        !           301:        scsi_cmd.opcode = TEST_UNIT_READY;
        !           302:
        !           303:        return (scsi_scsi_cmd(sc_link, (struct scsi_generic *) &scsi_cmd,
        !           304:            sizeof(scsi_cmd), 0, 0, retries, 10000, NULL, flags));
        !           305: }
        !           306:
        !           307: /*
        !           308:  * Do a scsi operation asking a device what it is.
        !           309:  * Use the scsi_cmd routine in the switch table.
        !           310:  */
        !           311: int
        !           312: scsi_inquire(struct scsi_link *sc_link, struct scsi_inquiry_data *inqbuf,
        !           313:     int flags)
        !           314: {
        !           315:        struct scsi_inquiry                     scsi_cmd;
        !           316:        int                                     length;
        !           317:        int                                     error;
        !           318:
        !           319:        bzero(&scsi_cmd, sizeof(scsi_cmd));
        !           320:        scsi_cmd.opcode = INQUIRY;
        !           321:
        !           322:        bzero(inqbuf, sizeof(*inqbuf));
        !           323:
        !           324:        memset(&inqbuf->vendor, ' ', sizeof inqbuf->vendor);
        !           325:        memset(&inqbuf->product, ' ', sizeof inqbuf->product);
        !           326:        memset(&inqbuf->revision, ' ', sizeof inqbuf->revision);
        !           327:        memset(&inqbuf->extra, ' ', sizeof inqbuf->extra);
        !           328:
        !           329:        /*
        !           330:         * Ask for only the basic 36 bytes of SCSI2 inquiry information. This
        !           331:         * avoids problems with devices that choke trying to supply more.
        !           332:         */
        !           333:        length = SID_INQUIRY_HDR + SID_SCSI2_ALEN;
        !           334:        _lto2b(length, scsi_cmd.length);
        !           335:        error = scsi_scsi_cmd(sc_link, (struct scsi_generic *)&scsi_cmd,
        !           336:            sizeof(scsi_cmd), (u_char *)inqbuf, length, 2, 10000, NULL,
        !           337:            SCSI_DATA_IN | flags);
        !           338:
        !           339:        return (error);
        !           340: }
        !           341:
        !           342: /*
        !           343:  * Query a VPD inquiry page
        !           344:  */
        !           345: int
        !           346: scsi_inquire_vpd(struct scsi_link *sc_link, void *buf, u_int buflen,
        !           347:     u_int8_t page, int flags)
        !           348: {
        !           349:        struct scsi_inquiry scsi_cmd;
        !           350:        int error;
        !           351:
        !           352:        bzero(&scsi_cmd, sizeof(scsi_cmd));
        !           353:        scsi_cmd.opcode = INQUIRY;
        !           354:        scsi_cmd.flags = SI_EVPD;
        !           355:        scsi_cmd.pagecode = page;
        !           356:        _lto2b(buflen, scsi_cmd.length);
        !           357:
        !           358:        bzero(buf, buflen);
        !           359:
        !           360:        error = scsi_scsi_cmd(sc_link, (struct scsi_generic *)&scsi_cmd,
        !           361:            sizeof(scsi_cmd), buf, buflen, 2, 10000, NULL,
        !           362:            SCSI_DATA_IN | flags);
        !           363:
        !           364:        return (error);
        !           365: }
        !           366:
        !           367: /*
        !           368:  * Prevent or allow the user to remove the media
        !           369:  */
        !           370: int
        !           371: scsi_prevent(struct scsi_link *sc_link, int type, int flags)
        !           372: {
        !           373:        struct scsi_prevent                     scsi_cmd;
        !           374:
        !           375:        if (sc_link->quirks & ADEV_NODOORLOCK)
        !           376:                return (0);
        !           377:
        !           378:        bzero(&scsi_cmd, sizeof(scsi_cmd));
        !           379:        scsi_cmd.opcode = PREVENT_ALLOW;
        !           380:        scsi_cmd.how = type;
        !           381:
        !           382:        return (scsi_scsi_cmd(sc_link, (struct scsi_generic *)&scsi_cmd,
        !           383:            sizeof(scsi_cmd), 0, 0, 2, 5000, NULL, flags));
        !           384: }
        !           385:
        !           386: /*
        !           387:  * Get scsi driver to send a "start up" command
        !           388:  */
        !           389: int
        !           390: scsi_start(struct scsi_link *sc_link, int type, int flags)
        !           391: {
        !           392:        struct scsi_start_stop                  scsi_cmd;
        !           393:
        !           394:        bzero(&scsi_cmd, sizeof(scsi_cmd));
        !           395:        scsi_cmd.opcode = START_STOP;
        !           396:        scsi_cmd.byte2 = 0x00;
        !           397:        scsi_cmd.how = type;
        !           398:
        !           399:        return (scsi_scsi_cmd(sc_link, (struct scsi_generic *)&scsi_cmd,
        !           400:            sizeof(scsi_cmd), 0, 0, 2,
        !           401:            type == SSS_START ? 30000 : 10000, NULL, flags));
        !           402: }
        !           403:
        !           404: int
        !           405: scsi_mode_sense(struct scsi_link *sc_link, int byte2, int page,
        !           406:     struct scsi_mode_header *data, size_t len, int flags, int timeout)
        !           407: {
        !           408:        struct scsi_mode_sense                  scsi_cmd;
        !           409:        int                                     error;
        !           410:
        !           411:        /*
        !           412:         * Make sure the sense buffer is clean before we do the mode sense, so
        !           413:         * that checks for bogus values of 0 will work in case the mode sense
        !           414:         * fails.
        !           415:         */
        !           416:        bzero(data, len);
        !           417:
        !           418:        bzero(&scsi_cmd, sizeof(scsi_cmd));
        !           419:        scsi_cmd.opcode = MODE_SENSE;
        !           420:        scsi_cmd.byte2 = byte2;
        !           421:        scsi_cmd.page = page;
        !           422:
        !           423:        if (len > 0xff)
        !           424:                len = 0xff;
        !           425:        scsi_cmd.length = len;
        !           426:
        !           427:        error = scsi_scsi_cmd(sc_link, (struct scsi_generic *)&scsi_cmd,
        !           428:            sizeof(scsi_cmd), (u_char *)data, len, 4, timeout, NULL,
        !           429:            flags | SCSI_DATA_IN);
        !           430:
        !           431:        SC_DEBUG(sc_link, SDEV_DB2, ("scsi_mode_sense: page %#x, error = %d\n",
        !           432:            page, error));
        !           433:
        !           434:        return (error);
        !           435: }
        !           436:
        !           437: int
        !           438: scsi_mode_sense_big(struct scsi_link *sc_link, int byte2, int page,
        !           439:     struct scsi_mode_header_big *data, size_t len, int flags, int timeout)
        !           440: {
        !           441:        struct scsi_mode_sense_big              scsi_cmd;
        !           442:        int                                     error;
        !           443:
        !           444:        /*
        !           445:         * Make sure the sense buffer is clean before we do the mode sense, so
        !           446:         * that checks for bogus values of 0 will work in case the mode sense
        !           447:         * fails.
        !           448:         */
        !           449:        bzero(data, len);
        !           450:
        !           451:        bzero(&scsi_cmd, sizeof(scsi_cmd));
        !           452:        scsi_cmd.opcode = MODE_SENSE_BIG;
        !           453:        scsi_cmd.byte2 = byte2;
        !           454:        scsi_cmd.page = page;
        !           455:
        !           456:        if (len > 0xffff)
        !           457:                len = 0xffff;
        !           458:        _lto2b(len, scsi_cmd.length);
        !           459:
        !           460:        error = scsi_scsi_cmd(sc_link, (struct scsi_generic *)&scsi_cmd,
        !           461:            sizeof(scsi_cmd), (u_char *)data, len, 4, timeout, NULL,
        !           462:            flags | SCSI_DATA_IN);
        !           463:
        !           464:        SC_DEBUG(sc_link, SDEV_DB2,
        !           465:            ("scsi_mode_sense_big: page %#x, error = %d\n", page, error));
        !           466:
        !           467:        return (error);
        !           468: }
        !           469:
        !           470: void *
        !           471: scsi_mode_sense_page(struct scsi_mode_header *hdr, const int page_len)
        !           472: {
        !           473:        int                                     total_length, header_length;
        !           474:
        !           475:        total_length = hdr->data_length + sizeof(hdr->data_length);
        !           476:        header_length = sizeof(*hdr) + hdr->blk_desc_len;
        !           477:
        !           478:        if ((total_length - header_length) < page_len)
        !           479:                return (NULL);
        !           480:
        !           481:        return ((u_char *)hdr + header_length);
        !           482: }
        !           483:
        !           484: void *
        !           485: scsi_mode_sense_big_page(struct scsi_mode_header_big *hdr, const int page_len)
        !           486: {
        !           487:        int                                     total_length, header_length;
        !           488:
        !           489:        total_length = _2btol(hdr->data_length) + sizeof(hdr->data_length);
        !           490:        header_length = sizeof(*hdr) + _2btol(hdr->blk_desc_len);
        !           491:
        !           492:        if ((total_length - header_length) < page_len)
        !           493:                return (NULL);
        !           494:
        !           495:        return ((u_char *)hdr + header_length);
        !           496: }
        !           497:
        !           498: int
        !           499: scsi_do_mode_sense(struct scsi_link *sc_link, int page,
        !           500:     union scsi_mode_sense_buf *buf, void **page_data, u_int32_t *density,
        !           501:     u_int64_t *block_count, u_int32_t *block_size, int page_len, int flags,
        !           502:     int *big)
        !           503: {
        !           504:        struct scsi_direct_blk_desc             *direct;
        !           505:        struct scsi_blk_desc                    *general;
        !           506:        int                                     error, blk_desc_len, offset;
        !           507:
        !           508:        *page_data = NULL;
        !           509:
        !           510:        if (density != NULL)
        !           511:                *density = 0;
        !           512:        if (block_count != NULL)
        !           513:                *block_count = 0;
        !           514:        if (block_size != NULL)
        !           515:                *block_size = 0;
        !           516:        if (big != NULL)
        !           517:                *big = 0;
        !           518:
        !           519:        if ((sc_link->flags & SDEV_ATAPI) == 0 ||
        !           520:            (sc_link->inqdata.device & SID_TYPE) == T_SEQUENTIAL) {
        !           521:                /*
        !           522:                 * Try 6 byte mode sense request first. Some devices don't
        !           523:                 * distinguish between 6 and 10 byte MODE SENSE commands,
        !           524:                 * returning 6 byte data for 10 byte requests. ATAPI tape
        !           525:                 * drives use MODE SENSE (6) even though ATAPI uses 10 byte
        !           526:                 * everything else. Don't bother with SMS_DBD. Check returned
        !           527:                 * data length to ensure that at least a header (3 additional
        !           528:                 * bytes) is returned.
        !           529:                 */
        !           530:                error = scsi_mode_sense(sc_link, 0, page, &buf->hdr,
        !           531:                    sizeof(*buf), flags, 20000);
        !           532:                if (error == 0) {
        !           533:                        *page_data = scsi_mode_sense_page(&buf->hdr, page_len);
        !           534:                        if (*page_data == NULL) {
        !           535:                                /*
        !           536:                                 * XXX
        !           537:                                 * Page data may be invalid (e.g. all zeros)
        !           538:                                 * but we accept the device's word that this is
        !           539:                                 * the best it can do. Some devices will freak
        !           540:                                 * out if their word is not accepted and
        !           541:                                 * MODE_SENSE_BIG is attempted.
        !           542:                                 */
        !           543:                                return (0);
        !           544:                        }
        !           545:                        offset = sizeof(struct scsi_mode_header);
        !           546:                        blk_desc_len = buf->hdr.blk_desc_len;
        !           547:                        goto blk_desc;
        !           548:                }
        !           549:        }
        !           550:
        !           551:        /*
        !           552:         * Try 10 byte mode sense request. Don't bother with SMS_DBD or
        !           553:         * SMS_LLBAA. Bail out if the returned information is less than
        !           554:         * a big header in size (6 additional bytes).
        !           555:         */
        !           556:        error = scsi_mode_sense_big(sc_link, 0, page, &buf->hdr_big,
        !           557:            sizeof(*buf), flags, 20000);
        !           558:        if (error != 0)
        !           559:                return (error);
        !           560:        if (_2btol(buf->hdr_big.data_length) < 6)
        !           561:                return (EIO);
        !           562:
        !           563:        if (big != NULL)
        !           564:                *big = 1;
        !           565:        offset = sizeof(struct scsi_mode_header_big);
        !           566:        *page_data = scsi_mode_sense_big_page(&buf->hdr_big, page_len);
        !           567:        blk_desc_len = _2btol(buf->hdr_big.blk_desc_len);
        !           568:
        !           569: blk_desc:
        !           570:        /* Both scsi_blk_desc and scsi_direct_blk_desc are 8 bytes. */
        !           571:        if (blk_desc_len == 0 || (blk_desc_len % 8 != 0))
        !           572:                return (0);
        !           573:
        !           574:        switch (sc_link->inqdata.device & SID_TYPE) {
        !           575:        case T_SEQUENTIAL:
        !           576:                /*
        !           577:                 * XXX What other device types return general block descriptors?
        !           578:                 */
        !           579:                general = (struct scsi_blk_desc *)&buf->buf[offset];
        !           580:                if (density != NULL)
        !           581:                        *density = general->density;
        !           582:                if (block_size != NULL)
        !           583:                        *block_size = _3btol(general->blklen);
        !           584:                if (block_count != NULL)
        !           585:                        *block_count = (u_int64_t)_3btol(general->nblocks);
        !           586:                break;
        !           587:
        !           588:        default:
        !           589:                direct = (struct scsi_direct_blk_desc *)&buf->buf[offset];
        !           590:                if (density != NULL)
        !           591:                        *density = direct->density;
        !           592:                if (block_size != NULL)
        !           593:                        *block_size = _3btol(direct->blklen);
        !           594:                if (block_count != NULL)
        !           595:                        *block_count = (u_int64_t)_4btol(direct->nblocks);
        !           596:                break;
        !           597:        }
        !           598:
        !           599:        return (0);
        !           600: }
        !           601:
        !           602: int
        !           603: scsi_mode_select(struct scsi_link *sc_link, int byte2,
        !           604:     struct scsi_mode_header *data, int flags, int timeout)
        !           605: {
        !           606:        struct scsi_mode_select                 scsi_cmd;
        !           607:        int                                     error;
        !           608:
        !           609:        bzero(&scsi_cmd, sizeof(scsi_cmd));
        !           610:        scsi_cmd.opcode = MODE_SELECT;
        !           611:        scsi_cmd.byte2 = byte2;
        !           612:        scsi_cmd.length = data->data_length + 1; /* 1 == sizeof(data_length) */
        !           613:
        !           614:        /* Length is reserved when doing mode select so zero it. */
        !           615:        data->data_length = 0;
        !           616:
        !           617:        error = scsi_scsi_cmd(sc_link, (struct scsi_generic *)&scsi_cmd,
        !           618:            sizeof(scsi_cmd), (u_char *)data, scsi_cmd.length, 4, timeout, NULL,
        !           619:            flags | SCSI_DATA_OUT);
        !           620:
        !           621:        SC_DEBUG(sc_link, SDEV_DB2, ("scsi_mode_select: error = %d\n", error));
        !           622:
        !           623:        return (error);
        !           624: }
        !           625:
        !           626: int
        !           627: scsi_mode_select_big(struct scsi_link *sc_link, int byte2,
        !           628:     struct scsi_mode_header_big *data, int flags, int timeout)
        !           629: {
        !           630:        struct scsi_mode_select_big             scsi_cmd;
        !           631:        u_int32_t                               len;
        !           632:        int                                     error;
        !           633:
        !           634:        len = _2btol(data->data_length) + 2; /* 2 == sizeof data->data_length */
        !           635:
        !           636:        bzero(&scsi_cmd, sizeof(scsi_cmd));
        !           637:        scsi_cmd.opcode = MODE_SELECT_BIG;
        !           638:        scsi_cmd.byte2 = byte2;
        !           639:        _lto2b(len, scsi_cmd.length);
        !           640:
        !           641:        /* Length is reserved when doing mode select so zero it. */
        !           642:        _lto2b(0, data->data_length);
        !           643:
        !           644:        error = scsi_scsi_cmd(sc_link, (struct scsi_generic *)&scsi_cmd,
        !           645:            sizeof(scsi_cmd), (u_char *)data, len, 4, timeout, NULL,
        !           646:            flags | SCSI_DATA_OUT);
        !           647:
        !           648:        SC_DEBUG(sc_link, SDEV_DB2, ("scsi_mode_select_big: error = %d\n",
        !           649:            error));
        !           650:
        !           651:        return (error);
        !           652: }
        !           653:
        !           654: int
        !           655: scsi_report_luns(struct scsi_link *sc_link, int selectreport,
        !           656:     struct scsi_report_luns_data *data, u_int32_t datalen, int flags,
        !           657:     int timeout)
        !           658: {
        !           659:        struct scsi_report_luns scsi_cmd;
        !           660:        int error;
        !           661:
        !           662:        bzero(&scsi_cmd, sizeof(scsi_cmd));
        !           663:        bzero(data, datalen);
        !           664:
        !           665:        scsi_cmd.opcode = REPORT_LUNS;
        !           666:        scsi_cmd.selectreport = selectreport;
        !           667:        _lto4b(datalen, scsi_cmd.length);
        !           668:
        !           669:        error = scsi_scsi_cmd(sc_link, (struct scsi_generic *)&scsi_cmd,
        !           670:            sizeof(scsi_cmd), (u_char *)data, datalen, 4, timeout, NULL,
        !           671:            flags | SCSI_DATA_IN);
        !           672:
        !           673:        SC_DEBUG(sc_link, SDEV_DB2, ("scsi_report_luns: error = %d\n", error));
        !           674:
        !           675:        return (error);
        !           676: }
        !           677:
        !           678: /*
        !           679:  * This routine is called by the scsi interrupt when the transfer is complete.
        !           680:  */
        !           681: void
        !           682: scsi_done(struct scsi_xfer *xs)
        !           683: {
        !           684:        struct scsi_link                        *sc_link = xs->sc_link;
        !           685:        struct buf                              *bp;
        !           686:        int                                     error;
        !           687:
        !           688:        splassert(IPL_BIO);
        !           689:
        !           690:        SC_DEBUG(sc_link, SDEV_DB2, ("scsi_done\n"));
        !           691: #ifdef SCSIDEBUG
        !           692:        if ((sc_link->flags & SDEV_DB1) != 0)
        !           693:                show_scsi_cmd(xs);
        !           694: #endif /* SCSIDEBUG */
        !           695:
        !           696:        /*
        !           697:         * If it's a user level request, bypass all usual completion processing,
        !           698:         * let the user work it out.. We take reponsibility for freeing the
        !           699:         * xs when the user returns (and restarting the device's queue).
        !           700:         */
        !           701:        if ((xs->flags & SCSI_USER) != 0) {
        !           702:                SC_DEBUG(sc_link, SDEV_DB3, ("calling user done()\n"));
        !           703:                scsi_user_done(xs); /* to take a copy of the sense etc. */
        !           704:                SC_DEBUG(sc_link, SDEV_DB3, ("returned from user done()\n"));
        !           705:
        !           706:                scsi_free_xs(xs, 1); /* restarts queue too */
        !           707:                SC_DEBUG(sc_link, SDEV_DB3, ("returning to adapter\n"));
        !           708:                return;
        !           709:        }
        !           710:
        !           711:        if (!((xs->flags & (SCSI_NOSLEEP | SCSI_POLL)) == SCSI_NOSLEEP)) {
        !           712:                /*
        !           713:                 * if it's a normal upper level request, then ask
        !           714:                 * the upper level code to handle error checking
        !           715:                 * rather than doing it here at interrupt time
        !           716:                 */
        !           717:                wakeup(xs);
        !           718:                return;
        !           719:        }
        !           720:
        !           721:        /*
        !           722:         * Go and handle errors now.
        !           723:         * If it returns ERESTART then we should RETRY
        !           724:         */
        !           725: retry:
        !           726:        error = sc_err1(xs);
        !           727:        if (error == ERESTART) {
        !           728:                switch ((*(sc_link->adapter->scsi_cmd)) (xs)) {
        !           729:                case SUCCESSFULLY_QUEUED:
        !           730:                        return;
        !           731:
        !           732:                case TRY_AGAIN_LATER:
        !           733:                        xs->error = XS_BUSY;
        !           734:                        /* FALLTHROUGH */
        !           735:                case COMPLETE:
        !           736:                        goto retry;
        !           737:                }
        !           738:        }
        !           739:
        !           740:        bp = xs->bp;
        !           741:        if (bp != NULL) {
        !           742:                if (error) {
        !           743:                        bp->b_error = error;
        !           744:                        bp->b_flags |= B_ERROR;
        !           745:                        bp->b_resid = bp->b_bcount;
        !           746:                } else {
        !           747:                        bp->b_error = 0;
        !           748:                        bp->b_resid = xs->resid;
        !           749:                }
        !           750:        }
        !           751:
        !           752:        if (sc_link->device->done) {
        !           753:                /*
        !           754:                 * Tell the device the operation is actually complete.
        !           755:                 * No more will happen with this xfer.  This for
        !           756:                 * notification of the upper-level driver only; they
        !           757:                 * won't be returning any meaningful information to us.
        !           758:                 */
        !           759:                (*sc_link->device->done)(xs);
        !           760:        }
        !           761:        scsi_free_xs(xs, 1);
        !           762:        if (bp != NULL)
        !           763:                biodone(bp);
        !           764: }
        !           765:
        !           766: int
        !           767: scsi_execute_xs(struct scsi_xfer *xs)
        !           768: {
        !           769:        int                                     error, flags, rslt, s;
        !           770:
        !           771:        xs->flags &= ~ITSDONE;
        !           772:        xs->error = XS_NOERROR;
        !           773:        xs->resid = xs->datalen;
        !           774:        xs->status = 0;
        !           775:
        !           776:        /*
        !           777:         * Do the transfer. If we are polling we will return:
        !           778:         * COMPLETE,  Was poll, and scsi_done has been called
        !           779:         * TRY_AGAIN_LATER, Adapter short resources, try again
        !           780:         *
        !           781:         * if under full steam (interrupts) it will return:
        !           782:         * SUCCESSFULLY_QUEUED, will do a wakeup when complete
        !           783:         * TRY_AGAIN_LATER, (as for polling)
        !           784:         * After the wakeup, we must still check if it succeeded
        !           785:         *
        !           786:         * If we have a SCSI_NOSLEEP (typically because we have a buf)
        !           787:         * we just return.  All the error processing and the buffer
        !           788:         * code both expect us to return straight to them, so as soon
        !           789:         * as the command is queued, return.
        !           790:         */
        !           791:
        !           792:        /*
        !           793:         * We save the flags here because the xs structure may already
        !           794:         * be freed by scsi_done by the time adapter->scsi_cmd returns.
        !           795:         *
        !           796:         * scsi_done is responsible for freeing the xs if either
        !           797:         * (flags & (SCSI_NOSLEEP | SCSI_POLL)) == SCSI_NOSLEEP
        !           798:         * -or-
        !           799:         * (flags & SCSI_USER) != 0
        !           800:         *
        !           801:         * Note: SCSI_USER must always be called with SCSI_NOSLEEP
        !           802:         * and never with SCSI_POLL, so the second expression should be
        !           803:         * is equivalent to the first.
        !           804:         */
        !           805:
        !           806:        flags = xs->flags;
        !           807: #ifdef DIAGNOSTIC
        !           808:        if ((flags & (SCSI_USER | SCSI_NOSLEEP)) == SCSI_USER)
        !           809:                panic("scsi_execute_xs: USER without NOSLEEP");
        !           810:        if ((flags & (SCSI_USER | SCSI_POLL)) == (SCSI_USER | SCSI_POLL))
        !           811:                panic("scsi_execute_xs: USER with POLL");
        !           812: #endif
        !           813: retry:
        !           814:        rslt = (*(xs->sc_link->adapter->scsi_cmd))(xs);
        !           815:        switch (rslt) {
        !           816:        case SUCCESSFULLY_QUEUED:
        !           817:                if ((flags & (SCSI_NOSLEEP | SCSI_POLL)) == SCSI_NOSLEEP)
        !           818:                        return (EJUSTRETURN);
        !           819: #ifdef DIAGNOSTIC
        !           820:                if (flags & SCSI_NOSLEEP)
        !           821:                        panic("scsi_execute_xs: NOSLEEP and POLL");
        !           822: #endif
        !           823:                s = splbio();
        !           824:                /* Since the xs is active we can't bail out on a signal. */
        !           825:                while ((xs->flags & ITSDONE) == 0)
        !           826:                        tsleep(xs, PRIBIO + 1, "scsicmd", 0);
        !           827:                splx(s);
        !           828:                /* FALLTHROUGH */
        !           829:        case COMPLETE:          /* Polling command completed ok */
        !           830:                if ((flags & (SCSI_NOSLEEP | SCSI_POLL)) == SCSI_NOSLEEP)
        !           831:                        return (EJUSTRETURN);
        !           832:                if (xs->bp)
        !           833:                        return (EJUSTRETURN);
        !           834:        doit:
        !           835:                SC_DEBUG(xs->sc_link, SDEV_DB3, ("back in cmd()\n"));
        !           836:                if ((error = sc_err1(xs)) != ERESTART)
        !           837:                        return (error);
        !           838:                goto retry;
        !           839:
        !           840:        case TRY_AGAIN_LATER:   /* adapter resource shortage */
        !           841:                xs->error = XS_BUSY;
        !           842:                goto doit;
        !           843:
        !           844:        case NO_CCB:
        !           845:                return (EAGAIN);
        !           846:
        !           847:        default:
        !           848:                panic("scsi_execute_xs: invalid return code (%#x)", rslt);
        !           849:        }
        !           850:
        !           851: #ifdef DIAGNOSTIC
        !           852:        panic("scsi_execute_xs: impossible");
        !           853: #endif
        !           854:        return (EINVAL);
        !           855: }
        !           856:
        !           857: /*
        !           858:  * ask the scsi driver to perform a command for us.
        !           859:  * tell it where to read/write the data, and how
        !           860:  * long the data is supposed to be. If we have  a buf
        !           861:  * to associate with the transfer, we need that too.
        !           862:  */
        !           863: int
        !           864: scsi_scsi_cmd(struct scsi_link *sc_link, struct scsi_generic *scsi_cmd,
        !           865:     int cmdlen, u_char *data_addr, int datalen, int retries, int timeout,
        !           866:     struct buf *bp, int flags)
        !           867: {
        !           868:        struct scsi_xfer                        *xs;
        !           869:        int                                     error;
        !           870:        int                                     s;
        !           871:
        !           872:        SC_DEBUG(sc_link, SDEV_DB2, ("scsi_cmd\n"));
        !           873:
        !           874: #ifdef DIAGNOSTIC
        !           875:        if (bp != NULL && (flags & SCSI_NOSLEEP) == 0)
        !           876:                panic("scsi_scsi_cmd: buffer without nosleep");
        !           877: #endif
        !           878:
        !           879:        if ((xs = scsi_make_xs(sc_link, scsi_cmd, cmdlen, data_addr, datalen,
        !           880:            retries, timeout, bp, flags)) == NULL)
        !           881:                return (ENOMEM);
        !           882:
        !           883:        if ((error = scsi_execute_xs(xs)) == EJUSTRETURN)
        !           884:                return (0);
        !           885:
        !           886:        s = splbio();
        !           887:
        !           888:        if (error == EAGAIN)
        !           889:                scsi_free_xs(xs, 0); /* Don't restart queue. */
        !           890:        else
        !           891:                scsi_free_xs(xs, 1);
        !           892:
        !           893:        splx(s);
        !           894:
        !           895:        return (error);
        !           896: }
        !           897:
        !           898: int
        !           899: sc_err1(struct scsi_xfer *xs)
        !           900: {
        !           901:        int                                     error;
        !           902:
        !           903:        SC_DEBUG(xs->sc_link, SDEV_DB3, ("sc_err1,err = 0x%x\n", xs->error));
        !           904:
        !           905:        /*
        !           906:         * If it has a buf, we might be working with
        !           907:         * a request from the buffer cache or some other
        !           908:         * piece of code that requires us to process
        !           909:         * errors at interrupt time. We have probably
        !           910:         * been called by scsi_done()
        !           911:         */
        !           912:        switch (xs->error) {
        !           913:        case XS_NOERROR:        /* nearly always hit this one */
        !           914:                error = 0;
        !           915:                break;
        !           916:
        !           917:        case XS_SENSE:
        !           918:        case XS_SHORTSENSE:
        !           919:                if ((error = scsi_interpret_sense(xs)) == ERESTART)
        !           920:                        goto retry;
        !           921:                SC_DEBUG(xs->sc_link, SDEV_DB3,
        !           922:                    ("scsi_interpret_sense returned %#x\n", error));
        !           923:                break;
        !           924:
        !           925:        case XS_BUSY:
        !           926:                if (xs->retries) {
        !           927:                        if ((error = scsi_delay(xs, 1)) == EIO)
        !           928:                                goto lose;
        !           929:                }
        !           930:                /* FALLTHROUGH */
        !           931:        case XS_TIMEOUT:
        !           932:        retry:
        !           933:                if (xs->retries--) {
        !           934:                        xs->error = XS_NOERROR;
        !           935:                        xs->flags &= ~ITSDONE;
        !           936:                        return ERESTART;
        !           937:                }
        !           938:                /* FALLTHROUGH */
        !           939:        case XS_DRIVER_STUFFUP:
        !           940:        lose:
        !           941:                error = EIO;
        !           942:                break;
        !           943:
        !           944:        case XS_SELTIMEOUT:
        !           945:                /* XXX Disable device? */
        !           946:                error = EIO;
        !           947:                break;
        !           948:
        !           949:        case XS_RESET:
        !           950:                if (xs->retries) {
        !           951:                        SC_DEBUG(xs->sc_link, SDEV_DB3,
        !           952:                            ("restarting command destroyed by reset\n"));
        !           953:                        goto retry;
        !           954:                }
        !           955:                error = EIO;
        !           956:                break;
        !           957:
        !           958:        default:
        !           959:                sc_print_addr(xs->sc_link);
        !           960:                printf("unknown error category (0x%x) from scsi driver\n",
        !           961:                    xs->error);
        !           962:                error = EIO;
        !           963:                break;
        !           964:        }
        !           965:
        !           966:        return (error);
        !           967: }
        !           968:
        !           969: int
        !           970: scsi_delay(struct scsi_xfer *xs, int seconds)
        !           971: {
        !           972:        switch (xs->flags & (SCSI_POLL | SCSI_NOSLEEP)) {
        !           973:        case SCSI_POLL:
        !           974:                delay(1000000 * seconds);
        !           975:                return (ERESTART);
        !           976:        case SCSI_NOSLEEP:
        !           977:                /* Retry the command immediately since we can't delay. */
        !           978:                return (ERESTART);
        !           979:        case (SCSI_POLL | SCSI_NOSLEEP):
        !           980:                /* Invalid combination! */
        !           981:                return (EIO);
        !           982:        }
        !           983:
        !           984:        while (seconds-- > 0) {
        !           985:                if (tsleep(&lbolt, PRIBIO|PCATCH, "scbusy", 0)) {
        !           986:                        /* Signal == abort xs. */
        !           987:                        return (EIO);
        !           988:                }
        !           989:        }
        !           990:
        !           991:        return (ERESTART);
        !           992: }
        !           993:
        !           994: /*
        !           995:  * Look at the returned sense and act on the error, determining
        !           996:  * the unix error number to pass back.  (0 = report no error)
        !           997:  *
        !           998:  * THIS IS THE DEFAULT ERROR HANDLER
        !           999:  */
        !          1000: int
        !          1001: scsi_interpret_sense(struct scsi_xfer *xs)
        !          1002: {
        !          1003:        struct scsi_sense_data                  *sense = &xs->sense;
        !          1004:        struct scsi_link                        *sc_link = xs->sc_link;
        !          1005:        u_int8_t                                serr, skey;
        !          1006:        int                                     error;
        !          1007:
        !          1008:        SC_DEBUG(sc_link, SDEV_DB1,
        !          1009:            ("code:%#x valid:%d key:%#x ili:%d eom:%d fmark:%d extra:%d\n",
        !          1010:            sense->error_code & SSD_ERRCODE,
        !          1011:            sense->error_code & SSD_ERRCODE_VALID ? 1 : 0,
        !          1012:            sense->flags & SSD_KEY,
        !          1013:            sense->flags & SSD_ILI ? 1 : 0,
        !          1014:            sense->flags & SSD_EOM ? 1 : 0,
        !          1015:            sense->flags & SSD_FILEMARK ? 1 : 0,
        !          1016:            sense->extra_len));
        !          1017: #ifdef SCSIDEBUG
        !          1018:        if ((sc_link->flags & SDEV_DB1) != 0)
        !          1019:                show_mem((u_char *)&xs->sense, sizeof xs->sense);
        !          1020: #endif /* SCSIDEBUG */
        !          1021:
        !          1022:        /*
        !          1023:         * If the device has its own error handler, call it first.
        !          1024:         * If it returns a legit error value, return that, otherwise
        !          1025:         * it wants us to continue with normal error processing.
        !          1026:         */
        !          1027:        if (sc_link->device->err_handler) {
        !          1028:                SC_DEBUG(sc_link, SDEV_DB2,
        !          1029:                    ("calling private err_handler()\n"));
        !          1030:                error = (*sc_link->device->err_handler) (xs);
        !          1031:                if (error != EJUSTRETURN)
        !          1032:                        return (error); /* error >= 0  better ? */
        !          1033:        }
        !          1034:
        !          1035:        /* Default sense interpretation. */
        !          1036:        serr = sense->error_code & SSD_ERRCODE;
        !          1037:        if (serr != SSD_ERRCODE_CURRENT && serr != SSD_ERRCODE_DEFERRED)
        !          1038:                skey = 0xff;    /* Invalid value, since key is 4 bit value. */
        !          1039:        else
        !          1040:                skey = sense->flags & SSD_KEY;
        !          1041:
        !          1042:        /*
        !          1043:         * Interpret the key/asc/ascq information where appropriate.
        !          1044:         */
        !          1045:        error = 0;
        !          1046:        switch (skey) {
        !          1047:        case SKEY_NO_SENSE:
        !          1048:        case SKEY_RECOVERED_ERROR:
        !          1049:                if (xs->resid == xs->datalen)
        !          1050:                        xs->resid = 0;  /* not short read */
        !          1051:                break;
        !          1052:        case SKEY_BLANK_CHECK:
        !          1053:        case SKEY_EQUAL:
        !          1054:                break;
        !          1055:        case SKEY_NOT_READY:
        !          1056:                if ((xs->flags & SCSI_IGNORE_NOT_READY) != 0)
        !          1057:                        return (0);
        !          1058:                error = EIO;
        !          1059:                if (xs->retries) {
        !          1060:                        switch (ASC_ASCQ(sense)) {
        !          1061:                        case SENSE_NOT_READY_BECOMING_READY:
        !          1062:                        case SENSE_NOT_READY_FORMAT:
        !          1063:                        case SENSE_NOT_READY_REBUILD:
        !          1064:                        case SENSE_NOT_READY_RECALC:
        !          1065:                        case SENSE_NOT_READY_INPROGRESS:
        !          1066:                        case SENSE_NOT_READY_LONGWRITE:
        !          1067:                        case SENSE_NOT_READY_SELFTEST:
        !          1068:                                SC_DEBUG(sc_link, SDEV_DB1,
        !          1069:                                    ("not ready: busy (%#x)\n",
        !          1070:                                    sense->add_sense_code_qual));
        !          1071:                                return (scsi_delay(xs, 1));
        !          1072:                        case SENSE_NOMEDIUM:
        !          1073:                        case SENSE_NOMEDIUM_TCLOSED:
        !          1074:                        case SENSE_NOMEDIUM_TOPEN:
        !          1075:                        case SENSE_NOMEDIUM_LOADABLE:
        !          1076:                        case SENSE_NOMEDIUM_AUXMEM:
        !          1077:                                sc_link->flags &= ~SDEV_MEDIA_LOADED;
        !          1078:                                error = ENOMEDIUM;
        !          1079:                                break;
        !          1080:                        default:
        !          1081:                                break;
        !          1082:                        }
        !          1083:                }
        !          1084:                break;
        !          1085:        case SKEY_MEDIUM_ERROR:
        !          1086:                switch (ASC_ASCQ(sense)) {
        !          1087:                case SENSE_NOMEDIUM:
        !          1088:                case SENSE_NOMEDIUM_TCLOSED:
        !          1089:                case SENSE_NOMEDIUM_TOPEN:
        !          1090:                case SENSE_NOMEDIUM_LOADABLE:
        !          1091:                case SENSE_NOMEDIUM_AUXMEM:
        !          1092:                        sc_link->flags &= ~SDEV_MEDIA_LOADED;
        !          1093:                        error = ENOMEDIUM;
        !          1094:                        break;
        !          1095:                case SENSE_BAD_MEDIUM:
        !          1096:                case SENSE_NR_MEDIUM_UNKNOWN_FORMAT:
        !          1097:                case SENSE_NR_MEDIUM_INCOMPATIBLE_FORMAT:
        !          1098:                case SENSE_NW_MEDIUM_UNKNOWN_FORMAT:
        !          1099:                case SENSE_NW_MEDIUM_INCOMPATIBLE_FORMAT:
        !          1100:                case SENSE_NF_MEDIUM_INCOMPATIBLE_FORMAT:
        !          1101:                case SENSE_NW_MEDIUM_AC_MISMATCH:
        !          1102:                        error = EMEDIUMTYPE;
        !          1103:                        break;
        !          1104:                default:
        !          1105:                        error = EIO;
        !          1106:                        break;
        !          1107:                }
        !          1108:                break;
        !          1109:        case SKEY_ILLEGAL_REQUEST:
        !          1110:                if ((xs->flags & SCSI_IGNORE_ILLEGAL_REQUEST) != 0)
        !          1111:                        return (0);
        !          1112:                if (ASC_ASCQ(sense) == SENSE_MEDIUM_REMOVAL_PREVENTED)
        !          1113:                        return(EBUSY);
        !          1114:                error = EINVAL;
        !          1115:                break;
        !          1116:        case SKEY_UNIT_ATTENTION:
        !          1117:                switch (ASC_ASCQ(sense)) {
        !          1118:                case SENSE_POWER_RESET_OR_BUS:
        !          1119:                case SENSE_POWER_ON:
        !          1120:                case SENSE_BUS_RESET:
        !          1121:                case SENSE_BUS_DEVICE_RESET:
        !          1122:                case SENSE_DEVICE_INTERNAL_RESET:
        !          1123:                case SENSE_TSC_CHANGE_SE:
        !          1124:                case SENSE_TSC_CHANGE_LVD:
        !          1125:                case SENSE_IT_NEXUS_LOSS:
        !          1126:                        return (scsi_delay(xs, 1));
        !          1127:                default:
        !          1128:                        break;
        !          1129:                }
        !          1130:                if ((sc_link->flags & SDEV_REMOVABLE) != 0)
        !          1131:                        sc_link->flags &= ~SDEV_MEDIA_LOADED;
        !          1132:                if ((xs->flags & SCSI_IGNORE_MEDIA_CHANGE) != 0 ||
        !          1133:                    /* XXX Should reupload any transient state. */
        !          1134:                    (sc_link->flags & SDEV_REMOVABLE) == 0) {
        !          1135:                        return (scsi_delay(xs, 1));
        !          1136:                }
        !          1137:                error = EIO;
        !          1138:                break;
        !          1139:        case SKEY_WRITE_PROTECT:
        !          1140:                error = EROFS;
        !          1141:                break;
        !          1142:        case SKEY_ABORTED_COMMAND:
        !          1143:                error = ERESTART;
        !          1144:                break;
        !          1145:        case SKEY_VOLUME_OVERFLOW:
        !          1146:                error = ENOSPC;
        !          1147:                break;
        !          1148:        case SKEY_HARDWARE_ERROR:
        !          1149:                if (ASC_ASCQ(sense) == SENSE_CARTRIDGE_FAULT)
        !          1150:                        return(EMEDIUMTYPE);
        !          1151:                error = EIO;
        !          1152:                break;
        !          1153:        default:
        !          1154:                error = EIO;
        !          1155:                break;
        !          1156:        }
        !          1157:
        !          1158:        if (skey && (xs->flags & SCSI_SILENT) == 0)
        !          1159:                scsi_print_sense(xs);
        !          1160:
        !          1161:        return (error);
        !          1162: }
        !          1163:
        !          1164: /*
        !          1165:  * Utility routines often used in SCSI stuff
        !          1166:  */
        !          1167:
        !          1168:
        !          1169: /*
        !          1170:  * Print out the scsi_link structure's address info.
        !          1171:  */
        !          1172: void
        !          1173: sc_print_addr(struct scsi_link *sc_link)
        !          1174: {
        !          1175:        printf("%s(%s:%d:%d): ",
        !          1176:            sc_link->device_softc ?
        !          1177:            ((struct device *)sc_link->device_softc)->dv_xname : "probe",
        !          1178:            ((struct device *)sc_link->adapter_softc)->dv_xname,
        !          1179:            sc_link->target, sc_link->lun);
        !          1180: }
        !          1181:
        !          1182: static const char *sense_keys[16] = {
        !          1183:        "No Additional Sense",
        !          1184:        "Soft Error",
        !          1185:        "Not Ready",
        !          1186:        "Media Error",
        !          1187:        "Hardware Error",
        !          1188:        "Illegal Request",
        !          1189:        "Unit Attention",
        !          1190:        "Write Protected",
        !          1191:        "Blank Check",
        !          1192:        "Vendor Unique",
        !          1193:        "Copy Aborted",
        !          1194:        "Aborted Command",
        !          1195:        "Equal Error",
        !          1196:        "Volume Overflow",
        !          1197:        "Miscompare Error",
        !          1198:        "Reserved"
        !          1199: };
        !          1200:
        !          1201: #ifdef SCSITERSE
        !          1202: static __inline void
        !          1203: asc2ascii(u_int8_t asc, u_int8_t ascq, char *result, size_t len)
        !          1204: {
        !          1205:        snprintf(result, len, "ASC 0x%02x ASCQ 0x%02x", asc, ascq);
        !          1206: }
        !          1207: #else
        !          1208: static const struct {
        !          1209:        u_int8_t asc, ascq;
        !          1210:        char *description;
        !          1211: } adesc[] = {
        !          1212:        { 0x00, 0x00, "No Additional Sense Information" },
        !          1213:        { 0x00, 0x01, "Filemark Detected" },
        !          1214:        { 0x00, 0x02, "End-Of-Partition/Medium Detected" },
        !          1215:        { 0x00, 0x03, "Setmark Detected" },
        !          1216:        { 0x00, 0x04, "Beginning-Of-Partition/Medium Detected" },
        !          1217:        { 0x00, 0x05, "End-Of-Data Detected" },
        !          1218:        { 0x00, 0x06, "I/O Process Terminated" },
        !          1219:        { 0x00, 0x11, "Audio Play Operation In Progress" },
        !          1220:        { 0x00, 0x12, "Audio Play Operation Paused" },
        !          1221:        { 0x00, 0x13, "Audio Play Operation Successfully Completed" },
        !          1222:        { 0x00, 0x14, "Audio Play Operation Stopped Due to Error" },
        !          1223:        { 0x00, 0x15, "No Current Audio Status To Return" },
        !          1224:        { 0x00, 0x16, "Operation In Progress" },
        !          1225:        { 0x00, 0x17, "Cleaning Requested" },
        !          1226:        { 0x00, 0x18, "Erase Operation In Progress" },
        !          1227:        { 0x00, 0x19, "Locate Operation In Progress" },
        !          1228:        { 0x00, 0x1A, "Rewind Operation In Progress" },
        !          1229:        { 0x00, 0x1B, "Set Capacity Operation In Progress" },
        !          1230:        { 0x00, 0x1C, "Verify Operation In Progress" },
        !          1231:        { 0x01, 0x00, "No Index/Sector Signal" },
        !          1232:        { 0x02, 0x00, "No Seek Complete" },
        !          1233:        { 0x03, 0x00, "Peripheral Device Write Fault" },
        !          1234:        { 0x03, 0x01, "No Write Current" },
        !          1235:        { 0x03, 0x02, "Excessive Write Errors" },
        !          1236:        { 0x04, 0x00, "Logical Unit Not Ready, Cause Not Reportable" },
        !          1237:        { 0x04, 0x01, "Logical Unit Is in Process Of Becoming Ready" },
        !          1238:        { 0x04, 0x02, "Logical Unit Not Ready, Initialization Command Required" },
        !          1239:        { 0x04, 0x03, "Logical Unit Not Ready, Manual Intervention Required" },
        !          1240:        { 0x04, 0x04, "Logical Unit Not Ready, Format In Progress" },
        !          1241:        { 0x04, 0x05, "Logical Unit Not Ready, Rebuild In Progress" },
        !          1242:        { 0x04, 0x06, "Logical Unit Not Ready, Recalculation In Progress" },
        !          1243:        { 0x04, 0x07, "Logical Unit Not Ready, Operation In Progress" },
        !          1244:        { 0x04, 0x08, "Logical Unit Not Ready, Long Write In Progress" },
        !          1245:        { 0x04, 0x09, "Logical Unit Not Ready, Self-Test In Progress" },
        !          1246:        { 0x04, 0x0A, "Logical Unit Not Accessible, Asymmetric Access State Transition" },
        !          1247:        { 0x04, 0x0B, "Logical Unit Not Accessible, Target Port In Standby State" },
        !          1248:        { 0x04, 0x0C, "Logical Unit Not Accessible, Target Port In Unavailable State" },
        !          1249:        { 0x04, 0x10, "Logical Unit Not Ready, Auxiliary Memory Not Accessible" },
        !          1250:        { 0x04, 0x11, "Logical Unit Not Ready, Notify (Enable Spinup) Required" },
        !          1251:        { 0x05, 0x00, "Logical Unit Does Not Respond To Selection" },
        !          1252:        { 0x06, 0x00, "No Reference Position Found" },
        !          1253:        { 0x07, 0x00, "Multiple Peripheral Devices Selected" },
        !          1254:        { 0x08, 0x00, "Logical Unit Communication Failure" },
        !          1255:        { 0x08, 0x01, "Logical Unit Communication Timeout" },
        !          1256:        { 0x08, 0x02, "Logical Unit Communication Parity Error" },
        !          1257:        { 0x08, 0x03, "Logical Unit Communication CRC Error (ULTRA-DMA/32)" },
        !          1258:        { 0x08, 0x04, "Unreachable Copy Target" },
        !          1259:        { 0x09, 0x00, "Track Following Error" },
        !          1260:        { 0x09, 0x01, "Tracking Servo Failure" },
        !          1261:        { 0x09, 0x02, "Focus Servo Failure" },
        !          1262:        { 0x09, 0x03, "Spindle Servo Failure" },
        !          1263:        { 0x09, 0x04, "Head Select Fault" },
        !          1264:        { 0x0A, 0x00, "Error Log Overflow" },
        !          1265:        { 0x0B, 0x00, "Warning" },
        !          1266:        { 0x0B, 0x01, "Warning - Specified Temperature Exceeded" },
        !          1267:        { 0x0B, 0x02, "Warning - Enclosure Degraded" },
        !          1268:        { 0x0C, 0x00, "Write Error" },
        !          1269:        { 0x0C, 0x01, "Write Error Recovered with Auto Reallocation" },
        !          1270:        { 0x0C, 0x02, "Write Error - Auto Reallocate Failed" },
        !          1271:        { 0x0C, 0x03, "Write Error - Recommend Reassignment" },
        !          1272:        { 0x0C, 0x04, "Compression Check Miscompare Error" },
        !          1273:        { 0x0C, 0x05, "Data Expansion Occurred During Compression" },
        !          1274:        { 0x0C, 0x06, "Block Not Compressible" },
        !          1275:        { 0x0C, 0x07, "Write Error - Recovery Needed" },
        !          1276:        { 0x0C, 0x08, "Write Error - Recovery Failed" },
        !          1277:        { 0x0C, 0x09, "Write Error - Loss Of Streaming" },
        !          1278:        { 0x0C, 0x0A, "Write Error - Padding Blocks Added" },
        !          1279:        { 0x0C, 0x0B, "Auxiliary Memory Write Error" },
        !          1280:        { 0x0C, 0x0C, "Write Error - Unexpected Unsolicited Data" },
        !          1281:        { 0x0C, 0x0D, "Write Error - Not Enough Unsolicited Data" },
        !          1282:        { 0x0D, 0x00, "Error Detected By Third Party Temporary Initiator" },
        !          1283:        { 0x0D, 0x01, "Third Party Device Failure" },
        !          1284:        { 0x0D, 0x02, "Copy Target Device Not Reachable" },
        !          1285:        { 0x0D, 0x03, "Incorrect Copy Target Device Type" },
        !          1286:        { 0x0D, 0x04, "Copy Target Device Data Underrun" },
        !          1287:        { 0x0D, 0x05, "Copy Target Device Data Overrun" },
        !          1288:        { 0x0E, 0x00, "Invalid Information Unit" },
        !          1289:        { 0x0E, 0x01, "Information Unit Too Short" },
        !          1290:        { 0x0E, 0x02, "Information Unit Too Long" },
        !          1291:        { 0x10, 0x00, "ID CRC Or ECC Error" },
        !          1292:        { 0x11, 0x00, "Unrecovered Read Error" },
        !          1293:        { 0x11, 0x01, "Read Retries Exhausted" },
        !          1294:        { 0x11, 0x02, "Error Too Long To Correct" },
        !          1295:        { 0x11, 0x03, "Multiple Read Errors" },
        !          1296:        { 0x11, 0x04, "Unrecovered Read Error - Auto Reallocate Failed" },
        !          1297:        { 0x11, 0x05, "L-EC Uncorrectable Error" },
        !          1298:        { 0x11, 0x06, "CIRC Unrecovered Error" },
        !          1299:        { 0x11, 0x07, "Data Resynchronization Error" },
        !          1300:        { 0x11, 0x08, "Incomplete Block Read" },
        !          1301:        { 0x11, 0x09, "No Gap Found" },
        !          1302:        { 0x11, 0x0A, "Miscorrected Error" },
        !          1303:        { 0x11, 0x0B, "Uncorrected Read Error - Recommend Reassignment" },
        !          1304:        { 0x11, 0x0C, "Uncorrected Read Error - Recommend Rewrite The Data" },
        !          1305:        { 0x11, 0x0D, "De-Compression CRC Error" },
        !          1306:        { 0x11, 0x0E, "Cannot Decompress Using Declared Algorithm" },
        !          1307:        { 0x11, 0x0F, "Error Reading UPC/EAN Number" },
        !          1308:        { 0x11, 0x10, "Error Reading ISRC Number" },
        !          1309:        { 0x11, 0x11, "Read Error - Loss Of Streaming" },
        !          1310:        { 0x11, 0x12, "Auxiliary Memory Read Error" },
        !          1311:        { 0x11, 0x13, "Read Error - Failed Retransmission Request" },
        !          1312:        { 0x12, 0x00, "Address Mark Not Found for ID Field" },
        !          1313:        { 0x13, 0x00, "Address Mark Not Found for Data Field" },
        !          1314:        { 0x14, 0x00, "Recorded Entity Not Found" },
        !          1315:        { 0x14, 0x01, "Record Not Found" },
        !          1316:        { 0x14, 0x02, "Filemark or Setmark Not Found" },
        !          1317:        { 0x14, 0x03, "End-Of-Data Not Found" },
        !          1318:        { 0x14, 0x04, "Block Sequence Error" },
        !          1319:        { 0x14, 0x05, "Record Not Found - Recommend Reassignment" },
        !          1320:        { 0x14, 0x06, "Record Not Found - Data Auto-Reallocated" },
        !          1321:        { 0x14, 0x07, "Locate Operation Failure" },
        !          1322:        { 0x15, 0x00, "Random Positioning Error" },
        !          1323:        { 0x15, 0x01, "Mechanical Positioning Error" },
        !          1324:        { 0x15, 0x02, "Positioning Error Detected By Read of Medium" },
        !          1325:        { 0x16, 0x00, "Data Synchronization Mark Error" },
        !          1326:        { 0x16, 0x01, "Data Sync Error - Data Rewritten" },
        !          1327:        { 0x16, 0x02, "Data Sync Error - Recommend Rewrite" },
        !          1328:        { 0x16, 0x03, "Data Sync Error - Data Auto-Reallocated" },
        !          1329:        { 0x16, 0x04, "Data Sync Error - Recommend Reassignment" },
        !          1330:        { 0x17, 0x00, "Recovered Data With No Error Correction Applied" },
        !          1331:        { 0x17, 0x01, "Recovered Data With Retries" },
        !          1332:        { 0x17, 0x02, "Recovered Data With Positive Head Offset" },
        !          1333:        { 0x17, 0x03, "Recovered Data With Negative Head Offset" },
        !          1334:        { 0x17, 0x04, "Recovered Data With Retries and/or CIRC Applied" },
        !          1335:        { 0x17, 0x05, "Recovered Data Using Previous Sector ID" },
        !          1336:        { 0x17, 0x06, "Recovered Data Without ECC - Data Auto-Reallocated" },
        !          1337:        { 0x17, 0x07, "Recovered Data Without ECC - Recommend Reassignment" },
        !          1338:        { 0x17, 0x08, "Recovered Data Without ECC - Recommend Rewrite" },
        !          1339:        { 0x17, 0x09, "Recovered Data Without ECC - Data Rewritten" },
        !          1340:        { 0x18, 0x00, "Recovered Data With Error Correction Applied" },
        !          1341:        { 0x18, 0x01, "Recovered Data With Error Correction & Retries Applied" },
        !          1342:        { 0x18, 0x02, "Recovered Data - Data Auto-Reallocated" },
        !          1343:        { 0x18, 0x03, "Recovered Data With CIRC" },
        !          1344:        { 0x18, 0x04, "Recovered Data With L-EC" },
        !          1345:        { 0x18, 0x05, "Recovered Data - Recommend Reassignment" },
        !          1346:        { 0x18, 0x06, "Recovered Data - Recommend Rewrite" },
        !          1347:        { 0x18, 0x07, "Recovered Data With ECC - Data Rewritten" },
        !          1348:        { 0x18, 0x08, "Recovered Data With Linking" },
        !          1349:        { 0x19, 0x00, "Defect List Error" },
        !          1350:        { 0x19, 0x01, "Defect List Not Available" },
        !          1351:        { 0x19, 0x02, "Defect List Error in Primary List" },
        !          1352:        { 0x19, 0x03, "Defect List Error in Grown List" },
        !          1353:        { 0x1A, 0x00, "Parameter List Length Error" },
        !          1354:        { 0x1B, 0x00, "Synchronous Data Transfer Error" },
        !          1355:        { 0x1C, 0x00, "Defect List Not Found" },
        !          1356:        { 0x1C, 0x01, "Primary Defect List Not Found" },
        !          1357:        { 0x1C, 0x02, "Grown Defect List Not Found" },
        !          1358:        { 0x1D, 0x00, "Miscompare During Verify Operation" },
        !          1359:        { 0x1E, 0x00, "Recovered ID with ECC" },
        !          1360:        { 0x1F, 0x00, "Partial Defect List Transfer" },
        !          1361:        { 0x20, 0x00, "Invalid Command Operation Code" },
        !          1362:        { 0x20, 0x01, "Access Denied - Initiator Pending-Enrolled" },
        !          1363:        { 0x20, 0x02, "Access Denied - No Access rights" },
        !          1364:        { 0x20, 0x03, "Access Denied - Invalid Mgmt ID Key" },
        !          1365:        { 0x20, 0x04, "Illegal Command While In Write Capable State" },
        !          1366:        { 0x20, 0x05, "Obsolete" },
        !          1367:        { 0x20, 0x06, "Illegal Command While In Explicit Address Mode" },
        !          1368:        { 0x20, 0x07, "Illegal Command While In Implicit Address Mode" },
        !          1369:        { 0x20, 0x08, "Access Denied - Enrollment Conflict" },
        !          1370:        { 0x20, 0x09, "Access Denied - Invalid LU Identifier" },
        !          1371:        { 0x20, 0x0A, "Access Denied - Invalid Proxy Token" },
        !          1372:        { 0x20, 0x0B, "Access Denied - ACL LUN Conflict" },
        !          1373:        { 0x21, 0x00, "Logical Block Address Out of Range" },
        !          1374:        { 0x21, 0x01, "Invalid Element Address" },
        !          1375:        { 0x21, 0x02, "Invalid Address For Write" },
        !          1376:        { 0x22, 0x00, "Illegal Function (Should 20 00, 24 00, or 26 00)" },
        !          1377:        { 0x24, 0x00, "Illegal Field in CDB" },
        !          1378:        { 0x24, 0x01, "CDB Decryption Error" },
        !          1379:        { 0x24, 0x02, "Obsolete" },
        !          1380:        { 0x24, 0x03, "Obsolete" },
        !          1381:        { 0x24, 0x04, "Security Audit Value Frozen" },
        !          1382:        { 0x24, 0x05, "Security Working Key Frozen" },
        !          1383:        { 0x24, 0x06, "Nonce Not Unique" },
        !          1384:        { 0x24, 0x07, "Nonce Timestamp Out Of Range" },
        !          1385:        { 0x25, 0x00, "Logical Unit Not Supported" },
        !          1386:        { 0x26, 0x00, "Invalid Field In Parameter List" },
        !          1387:        { 0x26, 0x01, "Parameter Not Supported" },
        !          1388:        { 0x26, 0x02, "Parameter Value Invalid" },
        !          1389:        { 0x26, 0x03, "Threshold Parameters Not Supported" },
        !          1390:        { 0x26, 0x04, "Invalid Release Of Persistent Reservation" },
        !          1391:        { 0x26, 0x05, "Data Decryption Error" },
        !          1392:        { 0x26, 0x06, "Too Many Target Descriptors" },
        !          1393:        { 0x26, 0x07, "Unsupported Target Descriptor Type Code" },
        !          1394:        { 0x26, 0x08, "Too Many Segment Descriptors" },
        !          1395:        { 0x26, 0x09, "Unsupported Segment Descriptor Type Code" },
        !          1396:        { 0x26, 0x0A, "Unexpected Inexact Segment" },
        !          1397:        { 0x26, 0x0B, "Inline Data Length Exceeded" },
        !          1398:        { 0x26, 0x0C, "Invalid Operation For Copy Source Or Destination" },
        !          1399:        { 0x26, 0x0D, "Copy Segment Granularity Violation" },
        !          1400:        { 0x26, 0x0E, "Invalid Parameter While Port Is Enabled" },
        !          1401:        { 0x27, 0x00, "Write Protected" },
        !          1402:        { 0x27, 0x01, "Hardware Write Protected" },
        !          1403:        { 0x27, 0x02, "Logical Unit Software Write Protected" },
        !          1404:        { 0x27, 0x03, "Associated Write Protect" },
        !          1405:        { 0x27, 0x04, "Persistent Write Protect" },
        !          1406:        { 0x27, 0x05, "Permanent Write Protect" },
        !          1407:        { 0x27, 0x06, "Conditional Write Protect" },
        !          1408:        { 0x28, 0x00, "Not Ready To Ready Transition (Medium May Have Changed)" },
        !          1409:        { 0x28, 0x01, "Import Or Export Element Accessed" },
        !          1410:        { 0x29, 0x00, "Power On, Reset, or Bus Device Reset Occurred" },
        !          1411:        { 0x29, 0x01, "Power On Occurred" },
        !          1412:        { 0x29, 0x02, "SCSI Bus Reset Occurred" },
        !          1413:        { 0x29, 0x03, "Bus Device Reset Function Occurred" },
        !          1414:        { 0x29, 0x04, "Device Internal Reset" },
        !          1415:        { 0x29, 0x05, "Transceiver Mode Changed to Single Ended" },
        !          1416:        { 0x29, 0x06, "Transceiver Mode Changed to LVD" },
        !          1417:        { 0x29, 0x07, "I_T Nexus Loss Occurred" },
        !          1418:        { 0x2A, 0x00, "Parameters Changed" },
        !          1419:        { 0x2A, 0x01, "Mode Parameters Changed" },
        !          1420:        { 0x2A, 0x02, "Log Parameters Changed" },
        !          1421:        { 0x2A, 0x03, "Reservations Preempted" },
        !          1422:        { 0x2A, 0x04, "Reservations Released" },
        !          1423:        { 0x2A, 0x05, "Registrations Preempted" },
        !          1424:        { 0x2A, 0x06, "Asymmetric Access State Changed" },
        !          1425:        { 0x2A, 0x07, "Implicit Asymmetric Access State Transition Failed" },
        !          1426:        { 0x2B, 0x00, "Copy Cannot Execute Since Host Cannot Disconnect" },
        !          1427:        { 0x2C, 0x00, "Command Sequence Error" },
        !          1428:        { 0x2C, 0x01, "Too Many Windows Specified" },
        !          1429:        { 0x2C, 0x02, "Invalid Combination of Windows Specified" },
        !          1430:        { 0x2C, 0x03, "Current Program Area Is Not Empty" },
        !          1431:        { 0x2C, 0x04, "Current Program Area Is Empty" },
        !          1432:        { 0x2C, 0x05, "Illegal Power Condition Request" },
        !          1433:        { 0x2C, 0x06, "Persistent Prevent Conflict" },
        !          1434:        { 0x2C, 0x07, "Previous Busy Status" },
        !          1435:        { 0x2C, 0x08, "Previous Task Set Full Status" },
        !          1436:        { 0x2C, 0x09, "Previous Reservation Conflict Status" },
        !          1437:        { 0x2C, 0x0A, "Partition Or Collection Contains User Objects" },
        !          1438:        { 0x2D, 0x00, "Overwrite Error On Update In Place" },
        !          1439:        { 0x2E, 0x00, "Insufficient Time For Operation" },
        !          1440:        { 0x2F, 0x00, "Commands Cleared By Another Initiator" },
        !          1441:        { 0x30, 0x00, "Incompatible Medium Installed" },
        !          1442:        { 0x30, 0x01, "Cannot Read Medium - Unknown Format" },
        !          1443:        { 0x30, 0x02, "Cannot Read Medium - Incompatible Format" },
        !          1444:        { 0x30, 0x03, "Cleaning Cartridge Installed" },
        !          1445:        { 0x30, 0x04, "Cannot Write Medium - Unknown Format" },
        !          1446:        { 0x30, 0x05, "Cannot Write Medium - Incompatible Format" },
        !          1447:        { 0x30, 0x06, "Cannot Format Medium - Incompatible Medium" },
        !          1448:        { 0x30, 0x07, "Cleaning Failure" },
        !          1449:        { 0x30, 0x08, "Cannot Write - Application Code Mismatch" },
        !          1450:        { 0x30, 0x09, "Current Session Not Fixated For Append" },
        !          1451:        { 0x30, 0x0A, "Cleaning Request Rejected" },
        !          1452:        { 0x30, 0x10, "Medium Not Formatted" },
        !          1453:        { 0x31, 0x00, "Medium Format Corrupted" },
        !          1454:        { 0x31, 0x01, "Format Command Failed" },
        !          1455:        { 0x32, 0x00, "No Defect Spare Location Available" },
        !          1456:        { 0x32, 0x01, "Defect List Update Failure" },
        !          1457:        { 0x33, 0x00, "Tape Length Error" },
        !          1458:        { 0x34, 0x00, "Enclosure Failure" },
        !          1459:        { 0x35, 0x00, "Enclosure Services Failure" },
        !          1460:        { 0x35, 0x01, "Unsupported Enclosure Function" },
        !          1461:        { 0x35, 0x02, "Enclosure Services Unavailable" },
        !          1462:        { 0x35, 0x03, "Enclosure Services Transfer Failure" },
        !          1463:        { 0x35, 0x04, "Enclosure Services Transfer Refused" },
        !          1464:        { 0x36, 0x00, "Ribbon, Ink, or Toner Failure" },
        !          1465:        { 0x37, 0x00, "Rounded Parameter" },
        !          1466:        { 0x38, 0x00, "Event Status Notification" },
        !          1467:        { 0x38, 0x02, "ESN - Power Management Class Event" },
        !          1468:        { 0x38, 0x04, "ESN - Media Class Event" },
        !          1469:        { 0x38, 0x06, "ESN - Device Busy Class Event" },
        !          1470:        { 0x39, 0x00, "Saving Parameters Not Supported" },
        !          1471:        { 0x3A, 0x00, "Medium Not Present" },
        !          1472:        { 0x3A, 0x01, "Medium Not Present - Tray Closed" },
        !          1473:        { 0x3A, 0x02, "Medium Not Present - Tray Open" },
        !          1474:        { 0x3A, 0x03, "Medium Not Present - Loadable" },
        !          1475:        { 0x3A, 0x04, "Medium Not Present - Medium Auxiliary Memory Accessible" },
        !          1476:        { 0x3B, 0x00, "Sequential Positioning Error" },
        !          1477:        { 0x3B, 0x01, "Tape Position Error At Beginning-of-Medium" },
        !          1478:        { 0x3B, 0x02, "Tape Position Error At End-of-Medium" },
        !          1479:        { 0x3B, 0x03, "Tape or Electronic Vertical Forms Unit Not Ready" },
        !          1480:        { 0x3B, 0x04, "Slew Failure" },
        !          1481:        { 0x3B, 0x05, "Paper Jam" },
        !          1482:        { 0x3B, 0x06, "Failed To Sense Top-Of-Form" },
        !          1483:        { 0x3B, 0x07, "Failed To Sense Bottom-Of-Form" },
        !          1484:        { 0x3B, 0x08, "Reposition Error" },
        !          1485:        { 0x3B, 0x09, "Read Past End Of Medium" },
        !          1486:        { 0x3B, 0x0A, "Read Past Beginning Of Medium" },
        !          1487:        { 0x3B, 0x0B, "Position Past End Of Medium" },
        !          1488:        { 0x3B, 0x0C, "Position Past Beginning Of Medium" },
        !          1489:        { 0x3B, 0x0D, "Medium Destination Element Full" },
        !          1490:        { 0x3B, 0x0E, "Medium Source Element Empty" },
        !          1491:        { 0x3B, 0x0F, "End Of Medium Reached" },
        !          1492:        { 0x3B, 0x11, "Medium Magazine Not Accessible" },
        !          1493:        { 0x3B, 0x12, "Medium Magazine Removed" },
        !          1494:        { 0x3B, 0x13, "Medium Magazine Inserted" },
        !          1495:        { 0x3B, 0x14, "Medium Magazine Locked" },
        !          1496:        { 0x3B, 0x15, "Medium Magazine Unlocked" },
        !          1497:        { 0x3B, 0x16, "Mechanical Positioning Or Changer Error" },
        !          1498:        { 0x3D, 0x00, "Invalid Bits In IDENTIFY Message" },
        !          1499:        { 0x3E, 0x00, "Logical Unit Has Not Self-Configured Yet" },
        !          1500:        { 0x3E, 0x01, "Logical Unit Failure" },
        !          1501:        { 0x3E, 0x02, "Timeout On Logical Unit" },
        !          1502:        { 0x3E, 0x03, "Logical Unit Failed Self-Test" },
        !          1503:        { 0x3E, 0x04, "Logical Unit Unable To Update Self-Test Log" },
        !          1504:        { 0x3F, 0x00, "Target Operating Conditions Have Changed" },
        !          1505:        { 0x3F, 0x01, "Microcode Has Changed" },
        !          1506:        { 0x3F, 0x02, "Changed Operating Definition" },
        !          1507:        { 0x3F, 0x03, "INQUIRY Data Has Changed" },
        !          1508:        { 0x3F, 0x04, "component Device Attached" },
        !          1509:        { 0x3F, 0x05, "Device Identifier Changed" },
        !          1510:        { 0x3F, 0x06, "Redundancy Group Created Or Modified" },
        !          1511:        { 0x3F, 0x07, "Redundancy Group Deleted" },
        !          1512:        { 0x3F, 0x08, "Spare Created Or Modified" },
        !          1513:        { 0x3F, 0x09, "Spare Deleted" },
        !          1514:        { 0x3F, 0x0A, "Volume Set Created Or Modified" },
        !          1515:        { 0x3F, 0x0B, "Volume Set Deleted" },
        !          1516:        { 0x3F, 0x0C, "Volume Set Deassigned" },
        !          1517:        { 0x3F, 0x0D, "Volume Set Reassigned" },
        !          1518:        { 0x3F, 0x0E, "Reported LUNs Data Has Changed" },
        !          1519:        { 0x3F, 0x0F, "Echo Buffer Overwritten" },
        !          1520:        { 0x3F, 0x10, "Medium Loadable" },
        !          1521:        { 0x3F, 0x11, "Medium Auxiliary Memory Accessible" },
        !          1522:        { 0x40, 0x00, "RAM FAILURE (Should Use 40 NN)" },
        !          1523:        /*
        !          1524:         * ASC 0x40 also has an ASCQ range from 0x80 to 0xFF.
        !          1525:         * 0x40 0xNN DIAGNOSTIC FAILURE ON COMPONENT NN
        !          1526:         */
        !          1527:        { 0x41, 0x00, "Data Path FAILURE (Should Use 40 NN)" },
        !          1528:        { 0x42, 0x00, "Power-On or Self-Test FAILURE (Should Use 40 NN)" },
        !          1529:        { 0x43, 0x00, "Message Error" },
        !          1530:        { 0x44, 0x00, "Internal Target Failure" },
        !          1531:        { 0x45, 0x00, "Select Or Reselect Failure" },
        !          1532:        { 0x46, 0x00, "Unsuccessful Soft Reset" },
        !          1533:        { 0x47, 0x00, "SCSI Parity Error" },
        !          1534:        { 0x47, 0x01, "Data Phase CRC Error Detected" },
        !          1535:        { 0x47, 0x02, "SCSI Parity Error Detected During ST Data Phase" },
        !          1536:        { 0x47, 0x03, "Information Unit iuCRC Error Detected" },
        !          1537:        { 0x47, 0x04, "Asynchronous Information Protection Error Detected" },
        !          1538:        { 0x47, 0x05, "Protocol Service CRC Error" },
        !          1539:        { 0x47, 0x7F, "Some Commands Cleared By iSCSI Protocol Event" },
        !          1540:        { 0x48, 0x00, "Initiator Detected Error Message Received" },
        !          1541:        { 0x49, 0x00, "Invalid Message Error" },
        !          1542:        { 0x4A, 0x00, "Command Phase Error" },
        !          1543:        { 0x4B, 0x00, "Data Phase Error" },
        !          1544:        { 0x4B, 0x01, "Invalid Target Port Transfer Tag Received" },
        !          1545:        { 0x4B, 0x02, "Too Much Write Data" },
        !          1546:        { 0x4B, 0x03, "ACK/NAK Timeout" },
        !          1547:        { 0x4B, 0x04, "NAK Received" },
        !          1548:        { 0x4B, 0x05, "Data Offset Error" },
        !          1549:        { 0x4B, 0x06, "Initiator Response Timeout" },
        !          1550:        { 0x4C, 0x00, "Logical Unit Failed Self-Configuration" },
        !          1551:        /*
        !          1552:         * ASC 0x4D has an ASCQ range from 0x00 to 0xFF.
        !          1553:         * 0x4D 0xNN TAGGED OVERLAPPED COMMANDS (NN = TASK TAG)
        !          1554:         */
        !          1555:        { 0x4E, 0x00, "Overlapped Commands Attempted" },
        !          1556:        { 0x50, 0x00, "Write Append Error" },
        !          1557:        { 0x50, 0x01, "Write Append Position Error" },
        !          1558:        { 0x50, 0x02, "Position Error Related To Timing" },
        !          1559:        { 0x51, 0x00, "Erase Failure" },
        !          1560:        { 0x51, 0x01, "Erase Failure - Incomplete Erase Operation Detected" },
        !          1561:        { 0x52, 0x00, "Cartridge Fault" },
        !          1562:        { 0x53, 0x00, "Media Load or Eject Failed" },
        !          1563:        { 0x53, 0x01, "Unload Tape Failure" },
        !          1564:        { 0x53, 0x02, "Medium Removal Prevented" },
        !          1565:        { 0x54, 0x00, "SCSI To Host System Interface Failure" },
        !          1566:        { 0x55, 0x00, "System Resource Failure" },
        !          1567:        { 0x55, 0x01, "System Buffer Full" },
        !          1568:        { 0x55, 0x02, "Insufficient Reservation Resources" },
        !          1569:        { 0x55, 0x03, "Insufficient Resources" },
        !          1570:        { 0x55, 0x04, "Insufficient Registration Resources" },
        !          1571:        { 0x55, 0x05, "Insufficient Access Control Resources" },
        !          1572:        { 0x55, 0x06, "Auxiliary Memory Out Of Space" },
        !          1573:        { 0x57, 0x00, "Unable To Recover Table-Of-Contents" },
        !          1574:        { 0x58, 0x00, "Generation Does Not Exist" },
        !          1575:        { 0x59, 0x00, "Updated Block Read" },
        !          1576:        { 0x5A, 0x00, "Operator Request or State Change Input" },
        !          1577:        { 0x5A, 0x01, "Operator Medium Removal Requested" },
        !          1578:        { 0x5A, 0x02, "Operator Selected Write Protect" },
        !          1579:        { 0x5A, 0x03, "Operator Selected Write Permit" },
        !          1580:        { 0x5B, 0x00, "Log Exception" },
        !          1581:        { 0x5B, 0x01, "Threshold Condition Met" },
        !          1582:        { 0x5B, 0x02, "Log Counter At Maximum" },
        !          1583:        { 0x5B, 0x03, "Log List Codes Exhausted" },
        !          1584:        { 0x5C, 0x00, "RPL Status Change" },
        !          1585:        { 0x5C, 0x01, "Spindles Synchronized" },
        !          1586:        { 0x5C, 0x02, "Spindles Not Synchronized" },
        !          1587:        { 0x5D, 0x00, "Failure Prediction Threshold Exceeded" },
        !          1588:        { 0x5D, 0x01, "Media Failure Prediction Threshold Exceeded" },
        !          1589:        { 0x5D, 0x02, "Logical Unit Failure Prediction Threshold Exceeded" },
        !          1590:        { 0x5D, 0x03, "Spare Area Exhaustion Prediction Threshold Exceeded" },
        !          1591:        { 0x5D, 0x10, "Hardware Impending Failure General Hard Drive Failure" },
        !          1592:        { 0x5D, 0x11, "Hardware Impending Failure Drive Error Rate Too High" },
        !          1593:        { 0x5D, 0x12, "Hardware Impending Failure Data Error Rate Too High" },
        !          1594:        { 0x5D, 0x13, "Hardware Impending Failure Seek Error Rate Too High" },
        !          1595:        { 0x5D, 0x14, "Hardware Impending Failure Too Many Block Reassigns" },
        !          1596:        { 0x5D, 0x15, "Hardware Impending Failure Access Times Too High" },
        !          1597:        { 0x5D, 0x16, "Hardware Impending Failure Start Unit Times Too High" },
        !          1598:        { 0x5D, 0x17, "Hardware Impending Failure Channel Parametrics" },
        !          1599:        { 0x5D, 0x18, "Hardware Impending Failure Controller Detected" },
        !          1600:        { 0x5D, 0x19, "Hardware Impending Failure Throughput Performance" },
        !          1601:        { 0x5D, 0x1A, "Hardware Impending Failure Seek Time Performance" },
        !          1602:        { 0x5D, 0x1B, "Hardware Impending Failure Spin-Up Retry Count" },
        !          1603:        { 0x5D, 0x1C, "Hardware Impending Failure Drive Calibration Retry Count" },
        !          1604:        { 0x5D, 0x20, "Controller Impending Failure General Hard Drive Failure" },
        !          1605:        { 0x5D, 0x21, "Controller Impending Failure Drive Error Rate Too High" },
        !          1606:        { 0x5D, 0x22, "Controller Impending Failure Data Error Rate Too High" },
        !          1607:        { 0x5D, 0x23, "Controller Impending Failure Seek Error Rate Too High" },
        !          1608:        { 0x5D, 0x24, "Controller Impending Failure Too Many Block Reassigns" },
        !          1609:        { 0x5D, 0x25, "Controller Impending Failure Access Times Too High" },
        !          1610:        { 0x5D, 0x26, "Controller Impending Failure Start Unit Times Too High" },
        !          1611:        { 0x5D, 0x27, "Controller Impending Failure Channel Parametrics" },
        !          1612:        { 0x5D, 0x28, "Controller Impending Failure Controller Detected" },
        !          1613:        { 0x5D, 0x29, "Controller Impending Failure Throughput Performance" },
        !          1614:        { 0x5D, 0x2A, "Controller Impending Failure Seek Time Performance" },
        !          1615:        { 0x5D, 0x2B, "Controller Impending Failure Spin-Up Retry Count" },
        !          1616:        { 0x5D, 0x2C, "Controller Impending Failure Drive Calibration Retry Count" },
        !          1617:        { 0x5D, 0x30, "Data Channel Impending Failure General Hard Drive Failure" },
        !          1618:        { 0x5D, 0x31, "Data Channel Impending Failure Drive Error Rate Too High" },
        !          1619:        { 0x5D, 0x32, "Data Channel Impending Failure Data Error Rate Too High" },
        !          1620:        { 0x5D, 0x33, "Data Channel Impending Failure Seek Error Rate Too High" },
        !          1621:        { 0x5D, 0x34, "Data Channel Impending Failure Too Many Block Reassigns" },
        !          1622:        { 0x5D, 0x35, "Data Channel Impending Failure Access Times Too High" },
        !          1623:        { 0x5D, 0x36, "Data Channel Impending Failure Start Unit Times Too High" },
        !          1624:        { 0x5D, 0x37, "Data Channel Impending Failure Channel Parametrics" },
        !          1625:        { 0x5D, 0x38, "Data Channel Impending Failure Controller Detected" },
        !          1626:        { 0x5D, 0x39, "Data Channel Impending Failure Throughput Performance" },
        !          1627:        { 0x5D, 0x3A, "Data Channel Impending Failure Seek Time Performance" },
        !          1628:        { 0x5D, 0x3B, "Data Channel Impending Failure Spin-Up Retry Count" },
        !          1629:        { 0x5D, 0x3C, "Data Channel Impending Failure Drive Calibration Retry Count" },
        !          1630:        { 0x5D, 0x40, "Servo Impending Failure General Hard Drive Failure" },
        !          1631:        { 0x5D, 0x41, "Servo Impending Failure Drive Error Rate Too High" },
        !          1632:        { 0x5D, 0x42, "Servo Impending Failure Data Error Rate Too High" },
        !          1633:        { 0x5D, 0x43, "Servo Impending Failure Seek Error Rate Too High" },
        !          1634:        { 0x5D, 0x44, "Servo Impending Failure Too Many Block Reassigns" },
        !          1635:        { 0x5D, 0x45, "Servo Impending Failure Access Times Too High" },
        !          1636:        { 0x5D, 0x46, "Servo Impending Failure Start Unit Times Too High" },
        !          1637:        { 0x5D, 0x47, "Servo Impending Failure Channel Parametrics" },
        !          1638:        { 0x5D, 0x48, "Servo Impending Failure Controller Detected" },
        !          1639:        { 0x5D, 0x49, "Servo Impending Failure Throughput Performance" },
        !          1640:        { 0x5D, 0x4A, "Servo Impending Failure Seek Time Performance" },
        !          1641:        { 0x5D, 0x4B, "Servo Impending Failure Spin-Up Retry Count" },
        !          1642:        { 0x5D, 0x4C, "Servo Impending Failure Drive Calibration Retry Count" },
        !          1643:        { 0x5D, 0x50, "Spindle Impending Failure General Hard Drive Failure" },
        !          1644:        { 0x5D, 0x51, "Spindle Impending Failure Drive Error Rate Too High" },
        !          1645:        { 0x5D, 0x52, "Spindle Impending Failure Data Error Rate Too High" },
        !          1646:        { 0x5D, 0x53, "Spindle Impending Failure Seek Error Rate Too High" },
        !          1647:        { 0x5D, 0x54, "Spindle Impending Failure Too Many Block Reassigns" },
        !          1648:        { 0x5D, 0x55, "Spindle Impending Failure Access Times Too High" },
        !          1649:        { 0x5D, 0x56, "Spindle Impending Failure Start Unit Times Too High" },
        !          1650:        { 0x5D, 0x57, "Spindle Impending Failure Channel Parametrics" },
        !          1651:        { 0x5D, 0x58, "Spindle Impending Failure Controller Detected" },
        !          1652:        { 0x5D, 0x59, "Spindle Impending Failure Throughput Performance" },
        !          1653:        { 0x5D, 0x5A, "Spindle Impending Failure Seek Time Performance" },
        !          1654:        { 0x5D, 0x5B, "Spindle Impending Failure Spin-Up Retry Count" },
        !          1655:        { 0x5D, 0x5C, "Spindle Impending Failure Drive Calibration Retry Count" },
        !          1656:        { 0x5D, 0x60, "Firmware Impending Failure General Hard Drive Failure" },
        !          1657:        { 0x5D, 0x61, "Firmware Impending Failure Drive Error Rate Too High" },
        !          1658:        { 0x5D, 0x62, "Firmware Impending Failure Data Error Rate Too High" },
        !          1659:        { 0x5D, 0x63, "Firmware Impending Failure Seek Error Rate Too High" },
        !          1660:        { 0x5D, 0x64, "Firmware Impending Failure Too Many Block Reassigns" },
        !          1661:        { 0x5D, 0x65, "Firmware Impending Failure Access Times Too High" },
        !          1662:        { 0x5D, 0x66, "Firmware Impending Failure Start Unit Times Too High" },
        !          1663:        { 0x5D, 0x67, "Firmware Impending Failure Channel Parametrics" },
        !          1664:        { 0x5D, 0x68, "Firmware Impending Failure Controller Detected" },
        !          1665:        { 0x5D, 0x69, "Firmware Impending Failure Throughput Performance" },
        !          1666:        { 0x5D, 0x6A, "Firmware Impending Failure Seek Time Performance" },
        !          1667:        { 0x5D, 0x6B, "Firmware Impending Failure Spin-Up Retry Count" },
        !          1668:        { 0x5D, 0x6C, "Firmware Impending Failure Drive Calibration Retry Count" },
        !          1669:        { 0x5D, 0xFF, "Failure Prediction Threshold Exceeded (false)" },
        !          1670:        { 0x5E, 0x00, "Low Power Condition On" },
        !          1671:        { 0x5E, 0x01, "Idle Condition Activated By Timer" },
        !          1672:        { 0x5E, 0x02, "Standby Condition Activated By Timer" },
        !          1673:        { 0x5E, 0x03, "Idle Condition Activated By Command" },
        !          1674:        { 0x5E, 0x04, "Standby Condition Activated By Command" },
        !          1675:        { 0x5E, 0x41, "Power State Change To Active" },
        !          1676:        { 0x5E, 0x42, "Power State Change To Idle" },
        !          1677:        { 0x5E, 0x43, "Power State Change To Standby" },
        !          1678:        { 0x5E, 0x45, "Power State Change To Sleep" },
        !          1679:        { 0x5E, 0x47, "Power State Change To Device Control" },
        !          1680:        { 0x60, 0x00, "Lamp Failure" },
        !          1681:        { 0x61, 0x00, "Video Acquisition Error" },
        !          1682:        { 0x61, 0x01, "Unable To Acquire Video" },
        !          1683:        { 0x61, 0x02, "Out Of Focus" },
        !          1684:        { 0x62, 0x00, "Scan Head Positioning Error" },
        !          1685:        { 0x63, 0x00, "End Of User Area Encountered On This Track" },
        !          1686:        { 0x63, 0x01, "Packet Does Not Fit In Available Space" },
        !          1687:        { 0x64, 0x00, "Illegal Mode For This Track" },
        !          1688:        { 0x64, 0x01, "Invalid Packet Size" },
        !          1689:        { 0x65, 0x00, "Voltage Fault" },
        !          1690:        { 0x66, 0x00, "Automatic Document Feeder Cover Up" },
        !          1691:        { 0x66, 0x01, "Automatic Document Feeder Lift Up" },
        !          1692:        { 0x66, 0x02, "Document Jam In Automatic Document Feeder" },
        !          1693:        { 0x66, 0x03, "Document Miss Feed Automatic In Document Feeder" },
        !          1694:        { 0x67, 0x00, "Configuration Failure" },
        !          1695:        { 0x67, 0x01, "Configuration Of Incapable Logical Units Failed" },
        !          1696:        { 0x67, 0x02, "Add Logical Unit Failed" },
        !          1697:        { 0x67, 0x03, "Modification Of Logical Unit Failed" },
        !          1698:        { 0x67, 0x04, "Exchange Of Logical Unit Failed" },
        !          1699:        { 0x67, 0x05, "Remove Of Logical Unit Failed" },
        !          1700:        { 0x67, 0x06, "Attachment Of Logical Unit Failed" },
        !          1701:        { 0x67, 0x07, "Creation Of Logical Unit Failed" },
        !          1702:        { 0x67, 0x08, "Assign Failure Occurred" },
        !          1703:        { 0x67, 0x09, "Multiply Assigned Logical Unit" },
        !          1704:        { 0x67, 0x0A, "Set Target Port Groups Command Failed" },
        !          1705:        { 0x68, 0x00, "Logical Unit Not Configured" },
        !          1706:        { 0x69, 0x00, "Data Loss On Logical Unit" },
        !          1707:        { 0x69, 0x01, "Multiple Logical Unit Failures" },
        !          1708:        { 0x69, 0x02, "Parity/Data Mismatch" },
        !          1709:        { 0x6A, 0x00, "Informational, Refer To Log" },
        !          1710:        { 0x6B, 0x00, "State Change Has Occurred" },
        !          1711:        { 0x6B, 0x01, "Redundancy Level Got Better" },
        !          1712:        { 0x6B, 0x02, "Redundancy Level Got Worse" },
        !          1713:        { 0x6C, 0x00, "Rebuild Failure Occurred" },
        !          1714:        { 0x6D, 0x00, "Recalculate Failure Occurred" },
        !          1715:        { 0x6E, 0x00, "Command To Logical Unit Failed" },
        !          1716:        { 0x6F, 0x00, "Copy Protection Key Exchange Failure - Authentication Failure" },
        !          1717:        { 0x6F, 0x01, "Copy Protection Key Exchange Failure - Key Not Present" },
        !          1718:        { 0x6F, 0x02, "Copy Protection Key Exchange Failure - Key Not Established" },
        !          1719:        { 0x6F, 0x03, "Read Of Scrambled Sector Without Authentication" },
        !          1720:        { 0x6F, 0x04, "Media Region Code Is Mismatched To Logical Unit Region" },
        !          1721:        { 0x6F, 0x05, "Drive Region Must Be Permanent/Region Reset Count Error" },
        !          1722:        /*
        !          1723:         * ASC 0x70 has an ASCQ range from 0x00 to 0xFF.
        !          1724:         * 0x70 0xNN DECOMPRESSION EXCEPTION SHORT ALGORITHM ID Of NN
        !          1725:         */
        !          1726:        { 0x71, 0x00, "Decompression Exception Long Algorithm ID" },
        !          1727:        { 0x72, 0x00, "Session Fixation Error" },
        !          1728:        { 0x72, 0x01, "Session Fixation Error Writing Lead-In" },
        !          1729:        { 0x72, 0x02, "Session Fixation Error Writing Lead-Out" },
        !          1730:        { 0x72, 0x03, "Session Fixation Error - Incomplete Track In Session" },
        !          1731:        { 0x72, 0x04, "Empty Or Partially Written Reserved Track" },
        !          1732:        { 0x72, 0x05, "No More Track Reservations Allowed" },
        !          1733:        { 0x73, 0x00, "CD Control Error" },
        !          1734:        { 0x73, 0x01, "Power Calibration Area Almost Full" },
        !          1735:        { 0x73, 0x02, "Power Calibration Area Is Full" },
        !          1736:        { 0x73, 0x03, "Power Calibration Area Error" },
        !          1737:        { 0x73, 0x04, "Program Memory Area Update Failure" },
        !          1738:        { 0x73, 0x05, "Program Memory Area Is Full" },
        !          1739:        { 0x73, 0x06, "RMA/PMA Is Almost Full" },
        !          1740:        { 0x00, 0x00, NULL }
        !          1741: };
        !          1742:
        !          1743: static __inline void
        !          1744: asc2ascii(u_int8_t asc, u_int8_t ascq, char *result, size_t len)
        !          1745: {
        !          1746:        int                                     i;
        !          1747:
        !          1748:        /* Check for a dynamically built description. */
        !          1749:        switch (asc) {
        !          1750:        case 0x40:
        !          1751:                if (ascq >= 0x80) {
        !          1752:                        snprintf(result, len,
        !          1753:                            "Diagnostic Failure on Component 0x%02x", ascq);
        !          1754:                        return;
        !          1755:                }
        !          1756:                break;
        !          1757:        case 0x4d:
        !          1758:                snprintf(result, len,
        !          1759:                    "Tagged Overlapped Commands (0x%02x = TASK TAG)", ascq);
        !          1760:                return;
        !          1761:        case 0x70:
        !          1762:                snprintf(result, len,
        !          1763:                    "Decompression Exception Short Algorithm ID OF 0x%02x",
        !          1764:                    ascq);
        !          1765:                return;
        !          1766:        default:
        !          1767:                break;
        !          1768:        }
        !          1769:
        !          1770:        /* Check for a fixed description. */
        !          1771:        for (i = 0; adesc[i].description != NULL; i++) {
        !          1772:                if (adesc[i].asc == asc && adesc[i].ascq == ascq) {
        !          1773:                        strlcpy(result, adesc[i].description, len);
        !          1774:                        return;
        !          1775:                }
        !          1776:        }
        !          1777:
        !          1778:        /* Just print out the ASC and ASCQ values as a description. */
        !          1779:        snprintf(result, len, "ASC 0x%02x ASCQ 0x%02x", asc, ascq);
        !          1780: }
        !          1781: #endif /* SCSITERSE */
        !          1782:
        !          1783: void
        !          1784: scsi_print_sense(struct scsi_xfer *xs)
        !          1785: {
        !          1786:        struct scsi_sense_data                  *sense = &xs->sense;
        !          1787:        u_int8_t                                serr = sense->error_code &
        !          1788:                                                    SSD_ERRCODE;
        !          1789:        int32_t                                 info;
        !          1790:        char                                    *sbs;
        !          1791:
        !          1792:        sc_print_addr(xs->sc_link);
        !          1793:
        !          1794:        /* XXX For error 0x71, current opcode is not the relevant one. */
        !          1795:        printf("%sCheck Condition (error %#x) on opcode 0x%x\n",
        !          1796:            (serr == SSD_ERRCODE_DEFERRED) ? "DEFERRED " : "", serr,
        !          1797:            xs->cmd->opcode);
        !          1798:
        !          1799:        if (serr != SSD_ERRCODE_CURRENT && serr != SSD_ERRCODE_DEFERRED) {
        !          1800:                if ((sense->error_code & SSD_ERRCODE_VALID) != 0) {
        !          1801:                        struct scsi_sense_data_unextended *usense =
        !          1802:                            (struct scsi_sense_data_unextended *)sense;
        !          1803:                        printf("   AT BLOCK #: %d (decimal)",
        !          1804:                            _3btol(usense->block));
        !          1805:                }
        !          1806:                return;
        !          1807:        }
        !          1808:
        !          1809:        printf("    SENSE KEY: %s\n", scsi_decode_sense(sense,
        !          1810:            DECODE_SENSE_KEY));
        !          1811:
        !          1812:        if (sense->flags & (SSD_FILEMARK | SSD_EOM | SSD_ILI)) {
        !          1813:                char pad = ' ';
        !          1814:
        !          1815:                printf("             ");
        !          1816:                if (sense->flags & SSD_FILEMARK) {
        !          1817:                        printf("%c Filemark Detected", pad);
        !          1818:                        pad = ',';
        !          1819:                }
        !          1820:                if (sense->flags & SSD_EOM) {
        !          1821:                        printf("%c EOM Detected", pad);
        !          1822:                        pad = ',';
        !          1823:                }
        !          1824:                if (sense->flags & SSD_ILI)
        !          1825:                        printf("%c Incorrect Length Indicator Set", pad);
        !          1826:                printf("\n");
        !          1827:        }
        !          1828:
        !          1829:        /*
        !          1830:         * It is inconvenient to use device type to figure out how to
        !          1831:         * format the info fields. So print them as 32 bit integers.
        !          1832:         */
        !          1833:        info = _4btol(&sense->info[0]);
        !          1834:        if (info)
        !          1835:                printf("         INFO: 0x%x (VALID flag %s)\n", info,
        !          1836:                    sense->error_code & SSD_ERRCODE_VALID ? "on" : "off");
        !          1837:
        !          1838:        if (sense->extra_len < 4)
        !          1839:                return;
        !          1840:
        !          1841:        info = _4btol(&sense->cmd_spec_info[0]);
        !          1842:        if (info)
        !          1843:                printf(" COMMAND INFO: 0x%x\n", info);
        !          1844:        sbs = scsi_decode_sense(sense, DECODE_ASC_ASCQ);
        !          1845:        if (strlen(sbs) > 0)
        !          1846:                printf("     ASC/ASCQ: %s\n", sbs);
        !          1847:        if (sense->fru != 0)
        !          1848:                printf("     FRU CODE: 0x%x\n", sense->fru);
        !          1849:        sbs = scsi_decode_sense(sense, DECODE_SKSV);
        !          1850:        if (strlen(sbs) > 0)
        !          1851:                printf("         SKSV: %s\n", sbs);
        !          1852: }
        !          1853:
        !          1854: char *
        !          1855: scsi_decode_sense(struct scsi_sense_data *sense, int flag)
        !          1856: {
        !          1857:        static char                             rqsbuf[132];
        !          1858:        u_int16_t                               count;
        !          1859:        u_int8_t                                skey, spec_1;
        !          1860:        int                                     len;
        !          1861:
        !          1862:        bzero(rqsbuf, sizeof(rqsbuf));
        !          1863:
        !          1864:        skey = sense->flags & SSD_KEY;
        !          1865:        spec_1 = sense->sense_key_spec_1;
        !          1866:        count = _2btol(&sense->sense_key_spec_2);
        !          1867:
        !          1868:        switch (flag) {
        !          1869:        case DECODE_SENSE_KEY:
        !          1870:                strlcpy(rqsbuf, sense_keys[skey], sizeof(rqsbuf));
        !          1871:                break;
        !          1872:        case DECODE_ASC_ASCQ:
        !          1873:                asc2ascii(sense->add_sense_code, sense->add_sense_code_qual,
        !          1874:                    rqsbuf, sizeof(rqsbuf));
        !          1875:                break;
        !          1876:        case DECODE_SKSV:
        !          1877:                if (sense->extra_len < 9 || ((spec_1 & SSD_SCS_VALID) == 0))
        !          1878:                        break;
        !          1879:                switch (skey) {
        !          1880:                case SKEY_ILLEGAL_REQUEST:
        !          1881:                        len = snprintf(rqsbuf, sizeof rqsbuf,
        !          1882:                            "Error in %s, Offset %d",
        !          1883:                            (spec_1 & SSD_SCS_CDB_ERROR) ? "CDB" : "Parameters",
        !          1884:                            count);
        !          1885:                        if ((len != -1 && len < sizeof rqsbuf) &&
        !          1886:                            (spec_1 & SSD_SCS_VALID_BIT_INDEX))
        !          1887:                                snprintf(rqsbuf+len, sizeof rqsbuf - len,
        !          1888:                                    ", bit %d", spec_1 & SSD_SCS_BIT_INDEX);
        !          1889:                        break;
        !          1890:                case SKEY_RECOVERED_ERROR:
        !          1891:                case SKEY_MEDIUM_ERROR:
        !          1892:                case SKEY_HARDWARE_ERROR:
        !          1893:                        snprintf(rqsbuf, sizeof rqsbuf,
        !          1894:                            "Actual Retry Count: %d", count);
        !          1895:                        break;
        !          1896:                case SKEY_NOT_READY:
        !          1897:                        snprintf(rqsbuf, sizeof rqsbuf,
        !          1898:                            "Progress Indicator: %d", count);
        !          1899:                        break;
        !          1900:                default:
        !          1901:                        break;
        !          1902:                }
        !          1903:                break;
        !          1904:        default:
        !          1905:                break;
        !          1906:        }
        !          1907:
        !          1908:        return (rqsbuf);
        !          1909: }
        !          1910:
        !          1911: #ifdef SCSIDEBUG
        !          1912: /*
        !          1913:  * Given a scsi_xfer, dump the request, in all its glory
        !          1914:  */
        !          1915: void
        !          1916: show_scsi_xs(struct scsi_xfer *xs)
        !          1917: {
        !          1918:        printf("xs(%p): ", xs);
        !          1919:        printf("flg(0x%x)", xs->flags);
        !          1920:        printf("sc_link(%p)", xs->sc_link);
        !          1921:        printf("retr(0x%x)", xs->retries);
        !          1922:        printf("timo(0x%x)", xs->timeout);
        !          1923:        printf("cmd(%p)", xs->cmd);
        !          1924:        printf("len(0x%x)", xs->cmdlen);
        !          1925:        printf("data(%p)", xs->data);
        !          1926:        printf("len(0x%x)", xs->datalen);
        !          1927:        printf("res(0x%x)", xs->resid);
        !          1928:        printf("err(0x%x)", xs->error);
        !          1929:        printf("bp(%p)", xs->bp);
        !          1930:        show_scsi_cmd(xs);
        !          1931: }
        !          1932:
        !          1933: void
        !          1934: show_scsi_cmd(struct scsi_xfer *xs)
        !          1935: {
        !          1936:        u_char                                  *b = (u_char *) xs->cmd;
        !          1937:        int                                     i = 0;
        !          1938:
        !          1939:        sc_print_addr(xs->sc_link);
        !          1940:        printf("command: ");
        !          1941:
        !          1942:        if ((xs->flags & SCSI_RESET) == 0) {
        !          1943:                while (i < xs->cmdlen) {
        !          1944:                        if (i)
        !          1945:                                printf(",");
        !          1946:                        printf("%x", b[i++]);
        !          1947:                }
        !          1948:                printf("-[%d bytes]\n", xs->datalen);
        !          1949:                if (xs->datalen)
        !          1950:                        show_mem(xs->data, min(64, xs->datalen));
        !          1951:        } else
        !          1952:                printf("-RESET-\n");
        !          1953: }
        !          1954:
        !          1955: void
        !          1956: show_mem(u_char *address, int num)
        !          1957: {
        !          1958:        int                                     x;
        !          1959:
        !          1960:        printf("------------------------------");
        !          1961:        for (x = 0; x < num; x++) {
        !          1962:                if ((x % 16) == 0)
        !          1963:                        printf("\n%03d: ", x);
        !          1964:                printf("%02x ", *address++);
        !          1965:        }
        !          1966:        printf("\n------------------------------\n");
        !          1967: }
        !          1968: #endif /* SCSIDEBUG */

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