2 * Copyright (c) 2007 Scott Long
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions, and the following disclaimer,
10 * without modification, immediately at the beginning of the file.
11 * 2. The name of the author may not be used to endorse or promote products
12 * derived from this software without specific prior written permission.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
18 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * scsi_sg peripheral driver. This driver is meant to implement the Linux
29 * SG passthrough interface for SCSI.
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/kernel.h>
36 #include <sys/types.h>
38 #include <sys/malloc.h>
39 #include <sys/fcntl.h>
40 #include <sys/ioccom.h>
41 #include <sys/errno.h>
42 #include <sys/devicestat.h>
45 #include <sys/device.h>
46 #include <sys/sysmsg.h>
49 #include "../cam_ccb.h"
50 #include "../cam_periph.h"
51 #include "../cam_queue.h"
52 #include "../cam_xpt_periph.h"
53 #include "../cam_debug.h"
54 #include "../cam_sim.h"
56 #include <emulation/linux/linux_ioctl.h>
59 #include "scsi_message.h"
64 SG_FLAG_LOCKED = 0x02,
65 SG_FLAG_INVALID = 0x04
83 #define ccb_type ppriv_field0
84 #define ccb_rdwr ppriv_ptr1
87 TAILQ_ENTRY(sg_rdwr) rdwr_link;
95 struct sg_io_hdr io_hdr;
102 struct devstat device_stats;
103 TAILQ_HEAD(, sg_rdwr) rdwr_done;
111 static d_open_t sgopen;
112 static d_close_t sgclose;
113 static d_ioctl_t sgioctl;
114 static d_write_t sgwrite;
115 static d_read_t sgread;
117 static periph_init_t sginit;
118 static periph_ctor_t sgregister;
119 static periph_oninv_t sgoninvalidate;
120 static periph_dtor_t sgcleanup;
121 static periph_start_t sgstart;
122 static void sgasync(void *callback_arg, uint32_t code,
123 struct cam_path *path, void *arg);
124 static void sgdone(struct cam_periph *periph, union ccb *done_ccb);
125 static int sgsendccb(struct cam_periph *periph, union ccb *ccb);
126 static int sgsendrdwr(struct cam_periph *periph, union ccb *ccb);
127 static int sgerror(union ccb *ccb, uint32_t cam_flags,
128 uint32_t sense_flags);
129 static void sg_scsiio_status(struct ccb_scsiio *csio,
130 u_short *hoststat, u_short *drvstat);
132 static int scsi_group_len(u_char cmd);
134 static struct periph_driver sgdriver =
137 TAILQ_HEAD_INITIALIZER(sgdriver.units), /* gen */ 0
139 PERIPHDRIVER_DECLARE(sg, sgdriver);
141 static struct dev_ops sg_ops = {
150 static int sg_version = 30125;
158 * Install a global async callback. This callback will receive aync
159 * callbacks like "new device found".
161 status = xpt_register_async(AC_FOUND_DEVICE, sgasync, NULL, NULL);
163 if (status != CAM_REQ_CMP) {
164 kprintf("sg: Failed to attach master async callbac "
165 "due to status 0x%x!\n", status);
170 sgoninvalidate(struct cam_periph *periph)
172 struct sg_softc *softc;
174 softc = (struct sg_softc *)periph->softc;
177 * Deregister any async callbacks.
179 xpt_register_async(0, sgasync, periph, periph->path);
181 softc->flags |= SG_FLAG_INVALID;
184 * XXX Return all queued I/O with ENXIO.
185 * XXX Handle any transactions queued to the card
186 * with XPT_ABORT_CCB.
190 xpt_print(periph->path, "lost device\n");
195 sgcleanup(struct cam_periph *periph)
197 struct sg_softc *softc;
199 softc = (struct sg_softc *)periph->softc;
201 xpt_print(periph->path, "removing device entry\n");
202 devstat_remove_entry(&softc->device_stats);
203 cam_periph_unlock(periph);
204 destroy_dev(softc->dev);
205 cam_periph_lock(periph);
206 kfree(softc, M_DEVBUF);
210 sgasync(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
212 struct cam_periph *periph;
214 periph = (struct cam_periph *)callback_arg;
217 case AC_FOUND_DEVICE:
219 struct ccb_getdev *cgd;
222 cgd = (struct ccb_getdev *)arg;
227 if (cgd->protocol != PROTO_SCSI)
232 * Allocate a peripheral instance for this device and
233 * start the probe process.
235 status = cam_periph_alloc(sgregister, sgoninvalidate,
237 "sg", CAM_PERIPH_BIO, cgd->ccb_h.path,
238 sgasync, AC_FOUND_DEVICE, cgd);
239 if ((status != CAM_REQ_CMP) && (status != CAM_REQ_INPROG)) {
240 const struct cam_status_entry *entry;
242 entry = cam_fetch_status_entry(status);
243 kprintf("sgasync: Unable to attach new device "
244 "due to status %#x: %s\n", status, entry ?
245 entry->status_text : "Unknown");
250 cam_periph_async(periph, code, path, arg);
256 sgregister(struct cam_periph *periph, void *arg)
258 struct sg_softc *softc;
259 struct ccb_getdev *cgd;
262 cgd = (struct ccb_getdev *)arg;
263 if (periph == NULL) {
264 kprintf("sgregister: periph was NULL!!\n");
265 return (CAM_REQ_CMP_ERR);
269 kprintf("sgregister: no getdev CCB, can't register device\n");
270 return (CAM_REQ_CMP_ERR);
273 softc = kmalloc(sizeof(*softc), M_DEVBUF, M_WAITOK | M_ZERO);
275 kprintf("sgregister: Unable to allocate softc\n");
276 return (CAM_REQ_CMP_ERR);
279 softc->state = SG_STATE_NORMAL;
280 softc->pd_type = SID_TYPE(&cgd->inq_data);
281 softc->sg_timeout = SG_DEFAULT_TIMEOUT / SG_DEFAULT_HZ * hz;
282 softc->sg_user_timeout = SG_DEFAULT_TIMEOUT;
283 TAILQ_INIT(&softc->rdwr_done);
284 periph->softc = softc;
287 * We pass in 0 for all blocksize, since we don't know what the
288 * blocksize of the device is, if it even has a blocksize.
290 cam_periph_unlock(periph);
291 no_tags = (cgd->inq_data.flags & SID_CmdQue) == 0;
292 devstat_add_entry(&softc->device_stats, "sg",
293 periph->unit_number, 0,
294 DEVSTAT_NO_BLOCKSIZE |
295 (no_tags ? DEVSTAT_NO_ORDERED_TAGS : 0),
297 DEVSTAT_TYPE_IF_SCSI | DEVSTAT_PRIORITY_PASS,
298 DEVSTAT_PRIORITY_PASS);
300 /* Register the device */
301 softc->dev = make_dev(&sg_ops, periph->unit_number,
302 UID_ROOT, GID_OPERATOR, 0600, "%s%d",
303 periph->periph_name, periph->unit_number);
304 make_dev_alias(softc->dev, "sg%c", 'a' + periph->unit_number);
305 cam_periph_lock(periph);
306 softc->dev->si_drv1 = periph;
309 * Add as async callback so that we get
310 * notified if this device goes away.
312 xpt_register_async(AC_LOST_DEVICE, sgasync, periph, periph->path);
315 xpt_announce_periph(periph, NULL);
317 return (CAM_REQ_CMP);
321 sgstart(struct cam_periph *periph, union ccb *start_ccb)
323 struct sg_softc *softc;
325 softc = (struct sg_softc *)periph->softc;
327 switch (softc->state) {
328 case SG_STATE_NORMAL:
329 start_ccb->ccb_h.ccb_type = SG_CCB_WAITING;
330 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
332 periph->immediate_priority = CAM_PRIORITY_NONE;
333 wakeup(&periph->ccb_list);
339 sgdone(struct cam_periph *periph, union ccb *done_ccb)
341 struct sg_softc *softc;
342 struct ccb_scsiio *csio;
344 softc = (struct sg_softc *)periph->softc;
345 csio = &done_ccb->csio;
346 switch (csio->ccb_h.ccb_type) {
348 /* Caller will release the CCB */
349 wakeup(&done_ccb->ccb_h.cbfcnp);
353 struct sg_rdwr *rdwr;
356 devstat_end_transaction(
357 &softc->device_stats,
359 csio->tag_action & 0xf,
360 ((csio->ccb_h.flags & CAM_DIR_MASK) ==
361 CAM_DIR_NONE) ? DEVSTAT_NO_DATA :
362 ((csio->ccb_h.flags & CAM_DIR_OUT) ?
363 DEVSTAT_WRITE : DEVSTAT_READ));
365 rdwr = done_ccb->ccb_h.ccb_rdwr;
367 rdwr->state = SG_RDWR_DONE;
372 panic("unknown sg CCB type");
377 sgopen(struct dev_open_args *ap)
378 /*cdev_t dev, int flags, int fmt, struct thread *td)*/
380 struct cam_periph *periph;
381 struct sg_softc *softc;
384 periph = (struct cam_periph *)ap->a_head.a_dev->si_drv1;
389 * Don't allow access when we're running at a high securelevel.
391 if (securelevel > 1) {
392 cam_periph_unlock(periph);
393 cam_periph_release(periph);
396 cam_periph_lock(periph);
398 softc = (struct sg_softc *)periph->softc;
399 if (softc->flags & SG_FLAG_INVALID) {
400 cam_periph_unlock(periph);
404 if ((softc->flags & SG_FLAG_OPEN) == 0) {
405 softc->flags |= SG_FLAG_OPEN;
406 cam_periph_unlock(periph);
408 /* Device closes aren't symmetrical, fix up the refcount. */
409 cam_periph_unlock(periph);
410 cam_periph_release(periph);
417 sgclose(struct dev_close_args *ap)
418 /* cdev_t dev, int flag, int fmt, struct thread *td) */
420 struct cam_periph *periph;
421 struct sg_softc *softc;
423 periph = (struct cam_periph *)ap->a_head.a_dev->si_drv1;
427 cam_periph_lock(periph);
429 softc = (struct sg_softc *)periph->softc;
430 softc->flags &= ~SG_FLAG_OPEN;
432 cam_periph_unlock(periph);
433 cam_periph_release(periph);
439 sgioctl(struct dev_ioctl_args *ap)
440 /* cdev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td) */
443 struct ccb_scsiio *csio;
444 struct cam_periph *periph;
445 struct sg_softc *softc;
446 struct sg_io_hdr req;
449 periph = (struct cam_periph *)ap->a_head.a_dev->si_drv1;
453 cam_periph_lock(periph);
455 softc = (struct sg_softc *)periph->softc;
459 case LINUX_SCSI_GET_BUS_NUMBER: {
462 busno = xpt_path_path_id(periph->path);
463 error = copyout(&busno, ap->a_data, sizeof(busno));
466 case LINUX_SCSI_GET_IDLUN: {
467 struct scsi_idlun idlun;
470 idlun.dev_id = xpt_path_target_id(periph->path);
471 sim = xpt_path_sim(periph->path);
472 idlun.host_unique_id = sim->unit_number;
473 error = copyout(&idlun, ap->a_data, sizeof(idlun));
476 case SG_GET_VERSION_NUM:
477 case LINUX_SG_GET_VERSION_NUM:
478 error = copyout(&sg_version, ap->a_data, sizeof(sg_version));
481 case LINUX_SG_SET_TIMEOUT: {
484 error = copyin(ap->a_data, &user_timeout, sizeof(u_int));
486 softc->sg_user_timeout = user_timeout;
487 softc->sg_timeout = user_timeout / SG_DEFAULT_HZ * hz;
492 case LINUX_SG_GET_TIMEOUT:
494 * The value is returned directly to the syscall.
496 ap->a_sysmsg->sm_result.iresult = softc->sg_user_timeout;
501 error = copyin(ap->a_data, &req, sizeof(req));
505 if (req.cmd_len > IOCDBLEN) {
510 if (req.iovec_count != 0) {
515 ccb = cam_periph_getccb(periph, /*priority*/5);
518 error = copyin(req.cmdp, &csio->cdb_io.cdb_bytes,
521 xpt_release_ccb(ccb);
525 switch(req.dxfer_direction) {
526 case SG_DXFER_TO_DEV:
529 case SG_DXFER_FROM_DEV:
532 case SG_DXFER_TO_FROM_DEV:
533 dir = CAM_DIR_IN | CAM_DIR_OUT;
552 error = sgsendccb(periph, ccb);
554 req.host_status = DID_ERROR;
555 req.driver_status = DRIVER_INVALID;
556 xpt_release_ccb(ccb);
560 req.status = csio->scsi_status;
561 req.masked_status = (csio->scsi_status >> 1) & 0x7f;
562 sg_scsiio_status(csio, &req.host_status, &req.driver_status);
563 req.resid = csio->resid;
564 req.duration = csio->ccb_h.timeout;
567 error = copyout(&req, ap->a_data, sizeof(req));
568 if ((error == 0) && (csio->ccb_h.status & CAM_AUTOSNS_VALID)
569 && (req.sbp != NULL)) {
570 req.sb_len_wr = req.mx_sb_len - csio->sense_resid;
571 error = copyout(&csio->sense_data, req.sbp,
575 xpt_release_ccb(ccb);
578 case SG_GET_RESERVED_SIZE:
579 case LINUX_SG_GET_RESERVED_SIZE: {
582 error = copyout(&size, ap->a_data, sizeof(size));
587 case LINUX_SG_GET_SCSI_ID:
589 struct sg_scsi_id id;
591 id.host_no = 0; /* XXX */
592 id.channel = xpt_path_path_id(periph->path);
593 id.scsi_id = xpt_path_target_id(periph->path);
594 id.lun = xpt_path_lun_id(periph->path);
595 id.scsi_type = softc->pd_type;
596 id.h_cmd_per_lun = 1;
597 id.d_queue_depth = 1;
601 error = copyout(&id, ap->a_data, sizeof(id));
605 case SG_EMULATED_HOST:
606 case SG_SET_TRANSFORM:
607 case SG_GET_TRANSFORM:
608 case SG_GET_NUM_WAITING:
610 case SG_GET_REQUEST_TABLE:
611 case SG_SET_KEEP_ORPHAN:
612 case SG_GET_KEEP_ORPHAN:
613 case SG_GET_ACCESS_COUNT:
614 case SG_SET_FORCE_LOW_DMA:
616 case SG_GET_SG_TABLESIZE:
617 case SG_SET_FORCE_PACK_ID:
619 case SG_SET_RESERVED_SIZE:
620 case SG_GET_COMMAND_Q:
621 case SG_SET_COMMAND_Q:
623 case SG_NEXT_CMD_LEN:
624 case LINUX_SG_EMULATED_HOST:
625 case LINUX_SG_SET_TRANSFORM:
626 case LINUX_SG_GET_TRANSFORM:
627 case LINUX_SG_GET_NUM_WAITING:
628 case LINUX_SG_SCSI_RESET:
629 case LINUX_SG_GET_REQUEST_TABLE:
630 case LINUX_SG_SET_KEEP_ORPHAN:
631 case LINUX_SG_GET_KEEP_ORPHAN:
632 case LINUX_SG_GET_ACCESS_COUNT:
633 case LINUX_SG_SET_FORCE_LOW_DMA:
634 case LINUX_SG_GET_LOW_DMA:
635 case LINUX_SG_GET_SG_TABLESIZE:
636 case LINUX_SG_SET_FORCE_PACK_ID:
637 case LINUX_SG_GET_PACK_ID:
638 case LINUX_SG_SET_RESERVED_SIZE:
639 case LINUX_SG_GET_COMMAND_Q:
640 case LINUX_SG_SET_COMMAND_Q:
641 case LINUX_SG_SET_DEBUG:
642 case LINUX_SG_NEXT_CMD_LEN:
645 kprintf("sgioctl: rejecting cmd 0x%lx\n", ap->a_cmd);
651 cam_periph_unlock(periph);
656 sgwrite(struct dev_write_args *ap)
657 /*cdev_t dev, struct uio *uio, int ioflag)*/
660 struct cam_periph *periph;
661 struct ccb_scsiio *csio;
663 struct sg_header *hdr;
664 struct sg_rdwr *rdwr;
667 int error = 0, cdb_len, buf_len, dir;
668 struct uio *uio = ap->a_uio;
670 periph = ap->a_head.a_dev->si_drv1;
671 rdwr = kmalloc(sizeof(*rdwr), M_DEVBUF, M_WAITOK | M_ZERO);
672 hdr = &rdwr->hdr.hdr;
674 /* Copy in the header block and sanity check it */
675 if (uio->uio_resid < sizeof(*hdr)) {
679 error = uiomove((char *)hdr, sizeof(*hdr), uio);
683 ccb = xpt_alloc_ccb();
691 * Copy in the CDB block. The designers of the interface didn't
692 * bother to provide a size for this in the header, so we have to
693 * figure it out ourselves.
695 if (uio->uio_resid < 1)
697 error = uiomove(&cdb_cmd, 1, uio);
700 if (hdr->twelve_byte)
703 cdb_len = scsi_group_len(cdb_cmd);
705 * We've already read the first byte of the CDB and advanced the uio
706 * pointer. Just read the rest.
708 csio->cdb_io.cdb_bytes[0] = cdb_cmd;
709 error = uiomove(&csio->cdb_io.cdb_bytes[1], cdb_len - 1, uio);
714 * Now set up the data block. Again, the designers didn't bother
715 * to make this reliable.
717 buf_len = uio->uio_resid;
719 buf = kmalloc(buf_len, M_DEVBUF, M_WAITOK | M_ZERO);
720 error = uiomove(buf, buf_len, uio);
724 } else if (hdr->reply_len != 0) {
725 buf = kmalloc(hdr->reply_len, M_DEVBUF, M_WAITOK | M_ZERO);
726 buf_len = hdr->reply_len;
734 cam_periph_lock(periph);
736 xpt_setup_ccb(&ccb->ccb_h, periph->path, /*priority*/5);
749 * Send off the command and hope that it works. This path does not
750 * go through sgstart because the I/O is supposed to be asynchronous.
753 rdwr->buf_len = buf_len;
754 rdwr->tag = hdr->pack_id;
756 rdwr->state = SG_RDWR_INPROG;
757 ccb->ccb_h.ccb_rdwr = rdwr;
758 ccb->ccb_h.ccb_type = SG_CCB_RDWR_IO;
759 TAILQ_INSERT_TAIL(&sc->rdwr_done, rdwr, rdwr_link);
760 error = sgsendrdwr(periph, ccb);
761 cam_periph_unlock(periph);
765 kfree(buf, M_DEVBUF);
769 kfree(rdwr, M_DEVBUF);
774 sgread(struct dev_read_args *ap)
775 /*cdev_t dev, struct uio *uio, int ioflag)*/
777 struct ccb_scsiio *csio;
778 struct cam_periph *periph;
780 struct sg_header *hdr;
781 struct sg_rdwr *rdwr;
782 u_short hstat, dstat;
783 int error, pack_len, reply_len, pack_id;
784 struct uio *uio = ap->a_uio;
786 periph = ap->a_head.a_dev->si_drv1;
788 /* XXX The pack len field needs to be updated and written out instead
789 * of discarded. Not sure how to do that.
791 uio->uio_rw = UIO_WRITE;
792 if ((error = uiomove((char *)&pack_len, 4, uio)) != 0)
794 if ((error = uiomove((char *)&reply_len, 4, uio)) != 0)
796 if ((error = uiomove((char *)&pack_id, 4, uio)) != 0)
798 uio->uio_rw = UIO_READ;
800 cam_periph_lock(periph);
803 TAILQ_FOREACH(rdwr, &sc->rdwr_done, rdwr_link) {
804 if (rdwr->tag == pack_id)
808 cam_periph_unlock(periph);
809 if (tsleep(&hstat, PCATCH, "sgnull", 0) == ERESTART)
811 cam_periph_lock(periph);
814 if (rdwr->state != SG_RDWR_DONE) {
815 tsleep_interlock(rdwr, PCATCH);
816 cam_periph_unlock(periph);
817 if (rdwr->state != SG_RDWR_DONE) {
818 if (tsleep(rdwr, PCATCH | PINTERLOCKED, "sgread", 0) ==
823 cam_periph_lock(periph);
826 TAILQ_REMOVE(&sc->rdwr_done, rdwr, rdwr_link);
827 cam_periph_unlock(periph);
829 hdr = &rdwr->hdr.hdr;
830 csio = &rdwr->ccb->csio;
831 sg_scsiio_status(csio, &hstat, &dstat);
832 hdr->host_status = hstat;
833 hdr->driver_status = dstat;
834 hdr->target_status = csio->scsi_status >> 1;
838 case DID_PASSTHROUGH:
858 if (dstat == DRIVER_SENSE) {
859 bcopy(&csio->sense_data, hdr->sense_buffer,
860 min(csio->sense_len, SG_MAX_SENSE));
862 scsi_sense_print(csio);
866 error = uiomove((char *)&hdr->result, sizeof(*hdr) -
867 offsetof(struct sg_header, result), uio);
868 if ((error == 0) && (hdr->result == 0))
869 error = uiomove(rdwr->buf, rdwr->buf_len, uio);
871 cam_periph_lock(periph);
872 xpt_free_ccb(rdwr->ccb);
873 cam_periph_unlock(periph);
874 kfree(rdwr->buf, M_DEVBUF);
875 kfree(rdwr, M_DEVBUF);
880 sgsendccb(struct cam_periph *periph, union ccb *ccb)
882 struct sg_softc *softc;
883 struct cam_periph_map_info mapinfo;
884 int error, need_unmap = 0;
886 softc = periph->softc;
887 if (((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE)
888 && (ccb->csio.data_ptr != NULL)) {
889 bzero(&mapinfo, sizeof(mapinfo));
892 * cam_periph_mapmem calls into proc and vm functions that can
893 * sleep as well as trigger I/O, so we can't hold the lock.
894 * Dropping it here is reasonably safe.
896 cam_periph_unlock(periph);
897 error = cam_periph_mapmem(ccb, &mapinfo);
898 cam_periph_lock(periph);
904 error = cam_periph_runccb(ccb, sgerror, CAM_RETRY_SELTO,
905 SF_RETRY_UA, &softc->device_stats);
908 cam_periph_unmapmem(ccb, &mapinfo);
914 sgsendrdwr(struct cam_periph *periph, union ccb *ccb)
916 struct sg_softc *softc;
918 softc = periph->softc;
919 devstat_start_transaction(&softc->device_stats);
925 sgerror(union ccb *ccb, uint32_t cam_flags, uint32_t sense_flags)
927 struct cam_periph *periph;
928 struct sg_softc *softc;
930 periph = xpt_path_periph(ccb->ccb_h.path);
931 softc = (struct sg_softc *)periph->softc;
933 return (cam_periph_error(ccb, cam_flags, sense_flags,
938 sg_scsiio_status(struct ccb_scsiio *csio, u_short *hoststat, u_short *drvstat)
942 status = csio->ccb_h.status;
944 switch (status & CAM_STATUS_MASK) {
949 case CAM_REQ_CMP_ERR:
950 *hoststat = DID_ERROR;
953 case CAM_REQ_ABORTED:
954 *hoststat = DID_ABORT;
957 case CAM_REQ_INVALID:
958 *hoststat = DID_ERROR;
959 *drvstat = DRIVER_INVALID;
961 case CAM_DEV_NOT_THERE:
962 *hoststat = DID_BAD_TARGET;
965 case CAM_SEL_TIMEOUT:
966 *hoststat = DID_NO_CONNECT;
969 case CAM_CMD_TIMEOUT:
970 *hoststat = DID_TIME_OUT;
973 case CAM_SCSI_STATUS_ERROR:
974 *hoststat = DID_ERROR;
977 case CAM_SCSI_BUS_RESET:
978 *hoststat = DID_RESET;
981 case CAM_UNCOR_PARITY:
982 *hoststat = DID_PARITY;
986 *hoststat = DID_BUS_BUSY;
990 *hoststat = DID_ERROR;
991 *drvstat = DRIVER_ERROR;
994 if (status & CAM_AUTOSNS_VALID)
995 *drvstat = DRIVER_SENSE;
999 scsi_group_len(u_char cmd)
1001 int len[] = {6, 10, 10, 12, 12, 12, 10, 10};
1004 group = (cmd >> 5) & 0x7;
1005 return (len[group]);