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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/cam/scsi/scsi_sa.c |
/*- * Implementation of SCSI Sequential Access Peripheral driver for CAM. * * Copyright (c) 1999, 2000 Matthew Jacob * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification, immediately at the beginning of the file. * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/cam/scsi/scsi_sa.c 237317 2012-06-20 14:36:09Z mav $"); #include <sys/param.h> #include <sys/queue.h> #ifdef _KERNEL #include <sys/systm.h> #include <sys/kernel.h> #endif #include <sys/types.h> #include <sys/time.h> #include <sys/bio.h> #include <sys/limits.h> #include <sys/malloc.h> #include <sys/mtio.h> #ifdef _KERNEL #include <sys/conf.h> #endif #include <sys/fcntl.h> #include <sys/devicestat.h> #ifndef _KERNEL #include <stdio.h> #include <string.h> #endif #include <cam/cam.h> #include <cam/cam_ccb.h> #include <cam/cam_periph.h> #include <cam/cam_xpt_periph.h> #include <cam/cam_debug.h> #include <cam/scsi/scsi_all.h> #include <cam/scsi/scsi_message.h> #include <cam/scsi/scsi_sa.h> #ifdef _KERNEL #include <opt_sa.h> #ifndef SA_IO_TIMEOUT #define SA_IO_TIMEOUT 4 #endif #ifndef SA_SPACE_TIMEOUT #define SA_SPACE_TIMEOUT 1 * 60 #endif #ifndef SA_REWIND_TIMEOUT #define SA_REWIND_TIMEOUT 2 * 60 #endif #ifndef SA_ERASE_TIMEOUT #define SA_ERASE_TIMEOUT 4 * 60 #endif #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) /* * Additional options that can be set for config: SA_1FM_AT_EOT */ #ifndef UNUSED_PARAMETER #define UNUSED_PARAMETER(x) x = x #endif #define QFRLS(ccb) \ if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) /* * Driver states */ MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers"); typedef enum { SA_STATE_NORMAL, SA_STATE_ABNORMAL } sa_state; #define ccb_pflags ppriv_field0 #define ccb_bp ppriv_ptr1 #define SA_CCB_BUFFER_IO 0x0 #define SA_CCB_WAITING 0x1 #define SA_CCB_TYPEMASK 0x1 #define SA_POSITION_UPDATED 0x2 #define Set_CCB_Type(x, type) \ x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ x->ccb_h.ccb_pflags |= type #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) typedef enum { SA_FLAG_OPEN = 0x0001, SA_FLAG_FIXED = 0x0002, SA_FLAG_TAPE_LOCKED = 0x0004, SA_FLAG_TAPE_MOUNTED = 0x0008, SA_FLAG_TAPE_WP = 0x0010, SA_FLAG_TAPE_WRITTEN = 0x0020, SA_FLAG_EOM_PENDING = 0x0040, SA_FLAG_EIO_PENDING = 0x0080, SA_FLAG_EOF_PENDING = 0x0100, SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| SA_FLAG_EOF_PENDING), SA_FLAG_INVALID = 0x0200, SA_FLAG_COMP_ENABLED = 0x0400, SA_FLAG_COMP_SUPP = 0x0800, SA_FLAG_COMP_UNSUPP = 0x1000, SA_FLAG_TAPE_FROZEN = 0x2000 } sa_flags; typedef enum { SA_MODE_REWIND = 0x00, SA_MODE_NOREWIND = 0x01, SA_MODE_OFFLINE = 0x02 } sa_mode; typedef enum { SA_PARAM_NONE = 0x00, SA_PARAM_BLOCKSIZE = 0x01, SA_PARAM_DENSITY = 0x02, SA_PARAM_COMPRESSION = 0x04, SA_PARAM_BUFF_MODE = 0x08, SA_PARAM_NUMBLOCKS = 0x10, SA_PARAM_WP = 0x20, SA_PARAM_SPEED = 0x40, SA_PARAM_ALL = 0x7f } sa_params; typedef enum { SA_QUIRK_NONE = 0x00, SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ } sa_quirks; #define SAMODE(z) (dev2unit(z) & 0x3) #define SADENSITY(z) ((dev2unit(z) >> 2) & 0x3) #define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4)) #define SA_NOT_CTLDEV 0 #define SA_CTLDEV 1 #define SA_ATYPE_R 0 #define SA_ATYPE_NR 1 #define SA_ATYPE_ER 2 #define SAMINOR(ctl, mode, access) \ ((ctl << 4) | (mode << 2) | (access & 0x3)) #define SA_NUM_MODES 4 struct sa_devs { struct cdev *ctl_dev; struct sa_mode_devs { struct cdev *r_dev; struct cdev *nr_dev; struct cdev *er_dev; } mode_devs[SA_NUM_MODES]; }; struct sa_softc { sa_state state; sa_flags flags; sa_quirks quirks; struct bio_queue_head bio_queue; int queue_count; struct devstat *device_stats; struct sa_devs devs; int blk_gran; int blk_mask; int blk_shift; u_int32_t max_blk; u_int32_t min_blk; u_int32_t comp_algorithm; u_int32_t saved_comp_algorithm; u_int32_t media_blksize; u_int32_t last_media_blksize; u_int32_t media_numblks; u_int8_t media_density; u_int8_t speed; u_int8_t scsi_rev; u_int8_t dsreg; /* mtio mt_dsreg, redux */ int buffer_mode; int filemarks; union ccb saved_ccb; int last_resid_was_io; /* * Relative to BOT Location. */ daddr_t fileno; daddr_t blkno; /* * Latched Error Info */ struct { struct scsi_sense_data _last_io_sense; u_int64_t _last_io_resid; u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; struct scsi_sense_data _last_ctl_sense; u_int64_t _last_ctl_resid; u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; #define last_io_sense errinfo._last_io_sense #define last_io_resid errinfo._last_io_resid #define last_io_cdb errinfo._last_io_cdb #define last_ctl_sense errinfo._last_ctl_sense #define last_ctl_resid errinfo._last_ctl_resid #define last_ctl_cdb errinfo._last_ctl_cdb } errinfo; /* * Misc other flags/state */ u_int32_t : 29, open_rdonly : 1, /* open read-only */ open_pending_mount : 1, /* open pending mount */ ctrl_mode : 1; /* control device open */ }; struct sa_quirk_entry { struct scsi_inquiry_pattern inq_pat; /* matching pattern */ sa_quirks quirks; /* specific quirk type */ u_int32_t prefblk; /* preferred blocksize when in fixed mode */ }; static struct sa_quirk_entry sa_quirk_table[] = { { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", "Python*", "*"}, SA_QUIRK_NODREAD, 0 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", "VIPER 2525 25462", "-011"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 }, #if 0 { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, }, #endif { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 }, { /* jreynold@primenet.com */ { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", "STT8000N*", "*"}, SA_QUIRK_1FM, 0 }, { /* mike@sentex.net */ { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", "STT20000*", "*"}, SA_QUIRK_1FM, 0 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE", "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", " SLR*", "*"}, SA_QUIRK_1FM, 0 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 } }; static d_open_t saopen; static d_close_t saclose; static d_strategy_t sastrategy; static d_ioctl_t saioctl; static periph_init_t sainit; static periph_ctor_t saregister; static periph_oninv_t saoninvalidate; static periph_dtor_t sacleanup; static periph_start_t sastart; static void saasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg); static void sadone(struct cam_periph *periph, union ccb *start_ccb); static int saerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags); static int samarkswanted(struct cam_periph *); static int sacheckeod(struct cam_periph *periph); static int sagetparams(struct cam_periph *periph, sa_params params_to_get, u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, sa_comp_t *comp_page); static int sasetparams(struct cam_periph *periph, sa_params params_to_set, u_int32_t blocksize, u_int8_t density, u_int32_t comp_algorithm, u_int32_t sense_flags); static void saprevent(struct cam_periph *periph, int action); static int sarewind(struct cam_periph *periph); static int saspace(struct cam_periph *periph, int count, scsi_space_code code); static int samount(struct cam_periph *, int, struct cdev *); static int saretension(struct cam_periph *periph); static int sareservereleaseunit(struct cam_periph *periph, int reserve); static int saloadunload(struct cam_periph *periph, int load); static int saerase(struct cam_periph *periph, int longerase); static int sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks); static int sardpos(struct cam_periph *periph, int, u_int32_t *); static int sasetpos(struct cam_periph *periph, int, u_int32_t *); static struct periph_driver sadriver = { sainit, "sa", TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 }; PERIPHDRIVER_DECLARE(sa, sadriver); /* For 2.2-stable support */ #ifndef D_TAPE #define D_TAPE 0 #endif static struct cdevsw sa_cdevsw = { .d_version = D_VERSION, .d_open = saopen, .d_close = saclose, .d_read = physread, .d_write = physwrite, .d_ioctl = saioctl, .d_strategy = sastrategy, .d_name = "sa", .d_flags = D_TAPE | D_NEEDGIANT, }; static int saopen(struct cdev *dev, int flags, int fmt, struct thread *td) { struct cam_periph *periph; struct sa_softc *softc; int error; periph = (struct cam_periph *)dev->si_drv1; if (cam_periph_acquire(periph) != CAM_REQ_CMP) { return (ENXIO); } cam_periph_lock(periph); softc = (struct sa_softc *)periph->softc; CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags)); if (SA_IS_CTRL(dev)) { softc->ctrl_mode = 1; cam_periph_unlock(periph); return (0); } if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { cam_periph_unlock(periph); cam_periph_release(periph); return (error); } if (softc->flags & SA_FLAG_OPEN) { error = EBUSY; } else if (softc->flags & SA_FLAG_INVALID) { error = ENXIO; } else { /* * Preserve whether this is a read_only open. */ softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; /* * The function samount ensures media is loaded and ready. * It also does a device RESERVE if the tape isn't yet mounted. * * If the mount fails and this was a non-blocking open, * make this a 'open_pending_mount' action. */ error = samount(periph, flags, dev); if (error && (flags & O_NONBLOCK)) { softc->flags |= SA_FLAG_OPEN; softc->open_pending_mount = 1; cam_periph_unhold(periph); cam_periph_unlock(periph); return (0); } } if (error) { cam_periph_unhold(periph); cam_periph_unlock(periph); cam_periph_release(periph); return (error); } saprevent(periph, PR_PREVENT); softc->flags |= SA_FLAG_OPEN; cam_periph_unhold(periph); cam_periph_unlock(periph); return (error); } static int saclose(struct cdev *dev, int flag, int fmt, struct thread *td) { struct cam_periph *periph; struct sa_softc *softc; int mode, error, writing, tmp; int closedbits = SA_FLAG_OPEN; mode = SAMODE(dev); periph = (struct cam_periph *)dev->si_drv1; if (periph == NULL) return (ENXIO); cam_periph_lock(periph); softc = (struct sa_softc *)periph->softc; CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags)); softc->open_rdonly = 0; if (SA_IS_CTRL(dev)) { softc->ctrl_mode = 0; cam_periph_unlock(periph); cam_periph_release(periph); return (0); } if (softc->open_pending_mount) { softc->flags &= ~SA_FLAG_OPEN; softc->open_pending_mount = 0; cam_periph_unlock(periph); cam_periph_release(periph); return (0); } if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { cam_periph_unlock(periph); return (error); } /* * Were we writing the tape? */ writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; /* * See whether or not we need to write filemarks. If this * fails, we probably have to assume we've lost tape * position. */ error = sacheckeod(periph); if (error) { xpt_print(periph->path, "failed to write terminating filemark(s)\n"); softc->flags |= SA_FLAG_TAPE_FROZEN; } /* * Whatever we end up doing, allow users to eject tapes from here on. */ saprevent(periph, PR_ALLOW); /* * Decide how to end... */ if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { closedbits |= SA_FLAG_TAPE_FROZEN; } else switch (mode) { case SA_MODE_OFFLINE: /* * An 'offline' close is an unconditional release of * frozen && mount conditions, irrespective of whether * these operations succeeded. The reason for this is * to allow at least some kind of programmatic way * around our state getting all fouled up. If somebody * issues an 'offline' command, that will be allowed * to clear state. */ (void) sarewind(periph); (void) saloadunload(periph, FALSE); closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; break; case SA_MODE_REWIND: /* * If the rewind fails, return an error- if anyone cares, * but not overwriting any previous error. * * We don't clear the notion of mounted here, but we do * clear the notion of frozen if we successfully rewound. */ tmp = sarewind(periph); if (tmp) { if (error != 0) error = tmp; } else { closedbits |= SA_FLAG_TAPE_FROZEN; } break; case SA_MODE_NOREWIND: /* * If we're not rewinding/unloading the tape, find out * whether we need to back up over one of two filemarks * we wrote (if we wrote two filemarks) so that appends * from this point on will be sane. */ if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { tmp = saspace(periph, -1, SS_FILEMARKS); if (tmp) { xpt_print(periph->path, "unable to backspace " "over one of double filemarks at end of " "tape\n"); xpt_print(periph->path, "it is possible that " "this device needs a SA_QUIRK_1FM quirk set" "for it\n"); softc->flags |= SA_FLAG_TAPE_FROZEN; } } break; default: xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); /* NOTREACHED */ break; } /* * We wish to note here that there are no more filemarks to be written. */ softc->filemarks = 0; softc->flags &= ~SA_FLAG_TAPE_WRITTEN; /* * And we are no longer open for business. */ softc->flags &= ~closedbits; /* * Inform users if tape state if frozen.... */ if (softc->flags & SA_FLAG_TAPE_FROZEN) { xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " "REWIND or MTEOM command to clear this state.\n"); } /* release the device if it is no longer mounted */ if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) sareservereleaseunit(periph, FALSE); cam_periph_unhold(periph); cam_periph_unlock(periph); cam_periph_release(periph); return (error); } /* * Actually translate the requested transfer into one the physical driver * can understand. The transfer is described by a buf and will include * only one physical transfer. */ static void sastrategy(struct bio *bp) { struct cam_periph *periph; struct sa_softc *softc; bp->bio_resid = bp->bio_bcount; if (SA_IS_CTRL(bp->bio_dev)) { biofinish(bp, NULL, EINVAL); return; } periph = (struct cam_periph *)bp->bio_dev->si_drv1; if (periph == NULL) { biofinish(bp, NULL, ENXIO); return; } cam_periph_lock(periph); softc = (struct sa_softc *)periph->softc; if (softc->flags & SA_FLAG_INVALID) { cam_periph_unlock(periph); biofinish(bp, NULL, ENXIO); return; } if (softc->flags & SA_FLAG_TAPE_FROZEN) { cam_periph_unlock(periph); biofinish(bp, NULL, EPERM); return; } /* * This should actually never occur as the write(2) * system call traps attempts to write to a read-only * file descriptor. */ if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { cam_periph_unlock(periph); biofinish(bp, NULL, EBADF); return; } if (softc->open_pending_mount) { int error = samount(periph, 0, bp->bio_dev); if (error) { cam_periph_unlock(periph); biofinish(bp, NULL, ENXIO); return; } saprevent(periph, PR_PREVENT); softc->open_pending_mount = 0; } /* * If it's a null transfer, return immediately */ if (bp->bio_bcount == 0) { cam_periph_unlock(periph); biodone(bp); return; } /* valid request? */ if (softc->flags & SA_FLAG_FIXED) { /* * Fixed block device. The byte count must * be a multiple of our block size. */ if (((softc->blk_mask != ~0) && ((bp->bio_bcount & softc->blk_mask) != 0)) || ((softc->blk_mask == ~0) && ((bp->bio_bcount % softc->min_blk) != 0))) { xpt_print(periph->path, "Invalid request. Fixed block " "device requests must be a multiple of %d bytes\n", softc->min_blk); cam_periph_unlock(periph); biofinish(bp, NULL, EINVAL); return; } } else if ((bp->bio_bcount > softc->max_blk) || (bp->bio_bcount < softc->min_blk) || (bp->bio_bcount & softc->blk_mask) != 0) { xpt_print_path(periph->path); printf("Invalid request. Variable block " "device requests must be "); if (softc->blk_mask != 0) { printf("a multiple of %d ", (0x1 << softc->blk_gran)); } printf("between %d and %d bytes\n", softc->min_blk, softc->max_blk); cam_periph_unlock(periph); biofinish(bp, NULL, EINVAL); return; } /* * Place it at the end of the queue. */ bioq_insert_tail(&softc->bio_queue, bp); softc->queue_count++; #if 0 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", (bp->bio_cmd == BIO_READ)? "read" : "write")); #endif if (softc->queue_count > 1) { CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: queue count now %d\n", softc->queue_count)); } /* * Schedule ourselves for performing the work. */ xpt_schedule(periph, CAM_PRIORITY_NORMAL); cam_periph_unlock(periph); return; } #define PENDING_MOUNT_CHECK(softc, periph, dev) \ if (softc->open_pending_mount) { \ error = samount(periph, 0, dev); \ if (error) { \ break; \ } \ saprevent(periph, PR_PREVENT); \ softc->open_pending_mount = 0; \ } static int saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) { struct cam_periph *periph; struct sa_softc *softc; scsi_space_code spaceop; int didlockperiph = 0; int mode; int error = 0; mode = SAMODE(dev); error = 0; /* shut up gcc */ spaceop = 0; /* shut up gcc */ periph = (struct cam_periph *)dev->si_drv1; if (periph == NULL) return (ENXIO); cam_periph_lock(periph); softc = (struct sa_softc *)periph->softc; /* * Check for control mode accesses. We allow MTIOCGET and * MTIOCERRSTAT (but need to be the only one open in order * to clear latched status), and MTSETBSIZE, MTSETDNSTY * and MTCOMP (but need to be the only one accessing this * device to run those). */ if (SA_IS_CTRL(dev)) { switch (cmd) { case MTIOCGETEOTMODEL: case MTIOCGET: break; case MTIOCERRSTAT: /* * If the periph isn't already locked, lock it * so our MTIOCERRSTAT can reset latched error stats. * * If the periph is already locked, skip it because * we're just getting status and it'll be up to the * other thread that has this device open to do * an MTIOCERRSTAT that would clear latched status. */ if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { error = cam_periph_hold(periph, PRIBIO|PCATCH); if (error != 0) { cam_periph_unlock(periph); return (error); } didlockperiph = 1; } break; case MTIOCTOP: { struct mtop *mt = (struct mtop *) arg; /* * Check to make sure it's an OP we can perform * with no media inserted. */ switch (mt->mt_op) { case MTSETBSIZ: case MTSETDNSTY: case MTCOMP: mt = NULL; /* FALLTHROUGH */ default: break; } if (mt != NULL) { break; } /* FALLTHROUGH */ } case MTIOCSETEOTMODEL: /* * We need to acquire the peripheral here rather * than at open time because we are sharing writable * access to data structures. */ error = cam_periph_hold(periph, PRIBIO|PCATCH); if (error != 0) { cam_periph_unlock(periph); return (error); } didlockperiph = 1; break; default: cam_periph_unlock(periph); return (EINVAL); } } /* * Find the device that the user is talking about */ switch (cmd) { case MTIOCGET: { struct mtget *g = (struct mtget *)arg; /* * If this isn't the control mode device, actually go out * and ask the drive again what it's set to. */ if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) { u_int8_t write_protect; int comp_enabled, comp_supported; error = sagetparams(periph, SA_PARAM_ALL, &softc->media_blksize, &softc->media_density, &softc->media_numblks, &softc->buffer_mode, &write_protect, &softc->speed, &comp_supported, &comp_enabled, &softc->comp_algorithm, NULL); if (error) break; if (write_protect) softc->flags |= SA_FLAG_TAPE_WP; else softc->flags &= ~SA_FLAG_TAPE_WP; softc->flags &= ~(SA_FLAG_COMP_SUPP| SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); if (comp_supported) { if (softc->saved_comp_algorithm == 0) softc->saved_comp_algorithm = softc->comp_algorithm; softc->flags |= SA_FLAG_COMP_SUPP; if (comp_enabled) softc->flags |= SA_FLAG_COMP_ENABLED; } else softc->flags |= SA_FLAG_COMP_UNSUPP; } bzero(g, sizeof(struct mtget)); g->mt_type = MT_ISAR; if (softc->flags & SA_FLAG_COMP_UNSUPP) { g->mt_comp = MT_COMP_UNSUPP; g->mt_comp0 = MT_COMP_UNSUPP; g->mt_comp1 = MT_COMP_UNSUPP; g->mt_comp2 = MT_COMP_UNSUPP; g->mt_comp3 = MT_COMP_UNSUPP; } else { if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { g->mt_comp = MT_COMP_DISABLED; } else { g->mt_comp = softc->comp_algorithm; } g->mt_comp0 = softc->comp_algorithm; g->mt_comp1 = softc->comp_algorithm; g->mt_comp2 = softc->comp_algorithm; g->mt_comp3 = softc->comp_algorithm; } g->mt_density = softc->media_density; g->mt_density0 = softc->media_density; g->mt_density1 = softc->media_density; g->mt_density2 = softc->media_density; g->mt_density3 = softc->media_density; g->mt_blksiz = softc->media_blksize; g->mt_blksiz0 = softc->media_blksize; g->mt_blksiz1 = softc->media_blksize; g->mt_blksiz2 = softc->media_blksize; g->mt_blksiz3 = softc->media_blksize; g->mt_fileno = softc->fileno; g->mt_blkno = softc->blkno; g->mt_dsreg = (short) softc->dsreg; /* * Yes, we know that this is likely to overflow */ if (softc->last_resid_was_io) { if ((g->mt_resid = (short) softc->last_io_resid) != 0) { if (SA_IS_CTRL(dev) == 0 || didlockperiph) { softc->last_io_resid = 0; } } } else { if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { if (SA_IS_CTRL(dev) == 0 || didlockperiph) { softc->last_ctl_resid = 0; } } } error = 0; break; } case MTIOCERRSTAT: { struct scsi_tape_errors *sep = &((union mterrstat *)arg)->scsi_errstat; CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("saioctl: MTIOCERRSTAT\n")); bzero(sep, sizeof(*sep)); sep->io_resid = softc->last_io_resid; bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, sizeof (sep->io_sense)); bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, sizeof (sep->io_cdb)); sep->ctl_resid = softc->last_ctl_resid; bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, sizeof (sep->ctl_sense)); bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, sizeof (sep->ctl_cdb)); if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) || didlockperiph) bzero((caddr_t) &softc->errinfo, sizeof (softc->errinfo)); error = 0; break; } case MTIOCTOP: { struct mtop *mt; int count; PENDING_MOUNT_CHECK(softc, periph, dev); mt = (struct mtop *)arg; CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("saioctl: op=0x%x count=0x%x\n", mt->mt_op, mt->mt_count)); count = mt->mt_count; switch (mt->mt_op) { case MTWEOF: /* write an end-of-file marker */ /* * We don't need to clear the SA_FLAG_TAPE_WRITTEN * flag because by keeping track of filemarks * we have last written we know ehether or not * we need to write more when we close the device. */ error = sawritefilemarks(periph, count, FALSE); break; case MTWSS: /* write a setmark */ error = sawritefilemarks(periph, count, TRUE); break; case MTBSR: /* backward space record */ case MTFSR: /* forward space record */ case MTBSF: /* backward space file */ case MTFSF: /* forward space file */ case MTBSS: /* backward space setmark */ case MTFSS: /* forward space setmark */ case MTEOD: /* space to end of recorded medium */ { int nmarks; spaceop = SS_FILEMARKS; nmarks = softc->filemarks; error = sacheckeod(periph); if (error) { xpt_print(periph->path, "EOD check prior to spacing failed\n"); softc->flags |= SA_FLAG_EIO_PENDING; break; } nmarks -= softc->filemarks; switch(mt->mt_op) { case MTBSR: count = -count; /* FALLTHROUGH */ case MTFSR: spaceop = SS_BLOCKS; break; case MTBSF: count = -count; /* FALLTHROUGH */ case MTFSF: break; case MTBSS: count = -count; /* FALLTHROUGH */ case MTFSS: spaceop = SS_SETMARKS; break; case MTEOD: spaceop = SS_EOD; count = 0; nmarks = 0; break; default: error = EINVAL; break; } if (error) break; nmarks = softc->filemarks; /* * XXX: Why are we checking again? */ error = sacheckeod(periph); if (error) break; nmarks -= softc->filemarks; error = saspace(periph, count - nmarks, spaceop); /* * At this point, clear that we've written the tape * and that we've written any filemarks. We really * don't know what the applications wishes to do next- * the sacheckeod's will make sure we terminated the * tape correctly if we'd been writing, but the next * action the user application takes will set again * whether we need to write filemarks. */ softc->flags &= ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); softc->filemarks = 0; break; } case MTREW: /* rewind */ PENDING_MOUNT_CHECK(softc, periph, dev); (void) sacheckeod(periph); error = sarewind(periph); /* see above */ softc->flags &= ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); softc->flags &= ~SA_FLAG_ERR_PENDING; softc->filemarks = 0; break; case MTERASE: /* erase */ PENDING_MOUNT_CHECK(softc, periph, dev); error = saerase(periph, count); softc->flags &= ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); softc->flags &= ~SA_FLAG_ERR_PENDING; break; case MTRETENS: /* re-tension tape */ PENDING_MOUNT_CHECK(softc, periph, dev); error = saretension(periph); softc->flags &= ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); softc->flags &= ~SA_FLAG_ERR_PENDING; break; case MTOFFL: /* rewind and put the drive offline */ PENDING_MOUNT_CHECK(softc, periph, dev); (void) sacheckeod(periph); /* see above */ softc->flags &= ~SA_FLAG_TAPE_WRITTEN; softc->filemarks = 0; error = sarewind(periph); /* clear the frozen flag anyway */ softc->flags &= ~SA_FLAG_TAPE_FROZEN; /* * Be sure to allow media removal before ejecting. */ saprevent(periph, PR_ALLOW); if (error == 0) { error = saloadunload(periph, FALSE); if (error == 0) { softc->flags &= ~SA_FLAG_TAPE_MOUNTED; } } break; case MTNOP: /* no operation, sets status only */ case MTCACHE: /* enable controller cache */ case MTNOCACHE: /* disable controller cache */ error = 0; break; case MTSETBSIZ: /* Set block size for device */ PENDING_MOUNT_CHECK(softc, periph, dev); error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 0, 0, 0); if (error == 0) { softc->last_media_blksize = softc->media_blksize; softc->media_blksize = count; if (count) { softc->flags |= SA_FLAG_FIXED; if (powerof2(count)) { softc->blk_shift = ffs(count) - 1; softc->blk_mask = count - 1; } else { softc->blk_mask = ~0; softc->blk_shift = 0; } /* * Make the user's desire 'persistent'. */ softc->quirks &= ~SA_QUIRK_VARIABLE; softc->quirks |= SA_QUIRK_FIXED; } else { softc->flags &= ~SA_FLAG_FIXED; if (softc->max_blk == 0) { softc->max_blk = ~0; } softc->blk_shift = 0; if (softc->blk_gran != 0) { softc->blk_mask = softc->blk_gran - 1; } else { softc->blk_mask = 0; } /* * Make the user's desire 'persistent'. */ softc->quirks |= SA_QUIRK_VARIABLE; softc->quirks &= ~SA_QUIRK_FIXED; } } break; case MTSETDNSTY: /* Set density for device and mode */ PENDING_MOUNT_CHECK(softc, periph, dev); if (count > UCHAR_MAX) { error = EINVAL; break; } else { error = sasetparams(periph, SA_PARAM_DENSITY, 0, count, 0, 0); } break; case MTCOMP: /* enable compression */ PENDING_MOUNT_CHECK(softc, periph, dev); /* * Some devices don't support compression, and * don't like it if you ask them for the * compression page. */ if ((softc->quirks & SA_QUIRK_NOCOMP) || (softc->flags & SA_FLAG_COMP_UNSUPP)) { error = ENODEV; break; } error = sasetparams(periph, SA_PARAM_COMPRESSION, 0, 0, count, SF_NO_PRINT); break; default: error = EINVAL; } break; } case MTIOCIEOT: case MTIOCEEOT: error = 0; break; case MTIOCRDSPOS: PENDING_MOUNT_CHECK(softc, periph, dev); error = sardpos(periph, 0, (u_int32_t *) arg); break; case MTIOCRDHPOS: PENDING_MOUNT_CHECK(softc, periph, dev); error = sardpos(periph, 1, (u_int32_t *) arg); break; case MTIOCSLOCATE: PENDING_MOUNT_CHECK(softc, periph, dev); error = sasetpos(periph, 0, (u_int32_t *) arg); break; case MTIOCHLOCATE: PENDING_MOUNT_CHECK(softc, periph, dev); error = sasetpos(periph, 1, (u_int32_t *) arg); break; case MTIOCGETEOTMODEL: error = 0; if (softc->quirks & SA_QUIRK_1FM) mode = 1; else mode = 2; *((u_int32_t *) arg) = mode; break; case MTIOCSETEOTMODEL: error = 0; switch (*((u_int32_t *) arg)) { case 1: softc->quirks &= ~SA_QUIRK_2FM; softc->quirks |= SA_QUIRK_1FM; break; case 2: softc->quirks &= ~SA_QUIRK_1FM; softc->quirks |= SA_QUIRK_2FM; break; default: error = EINVAL; break; } break; default: error = cam_periph_ioctl(periph, cmd, arg, saerror); break; } /* * Check to see if we cleared a frozen state */ if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { switch(cmd) { case MTIOCRDSPOS: case MTIOCRDHPOS: case MTIOCSLOCATE: case MTIOCHLOCATE: softc->fileno = (daddr_t) -1; softc->blkno = (daddr_t) -1; softc->flags &= ~SA_FLAG_TAPE_FROZEN; xpt_print(periph->path, "tape state now unfrozen.\n"); break; default: break; } } if (didlockperiph) { cam_periph_unhold(periph); } cam_periph_unlock(periph); return (error); } static void sainit(void) { cam_status status; /* * Install a global async callback. */ status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); if (status != CAM_REQ_CMP) { printf("sa: Failed to attach master async callback " "due to status 0x%x!\n", status); } } static void saoninvalidate(struct cam_periph *periph) { struct sa_softc *softc; softc = (struct sa_softc *)periph->softc; /* * De-register any async callbacks. */ xpt_register_async(0, saasync, periph, periph->path); softc->flags |= SA_FLAG_INVALID; /* * Return all queued I/O with ENXIO. * XXX Handle any transactions queued to the card * with XPT_ABORT_CCB. */ bioq_flush(&softc->bio_queue, NULL, ENXIO); softc->queue_count = 0; xpt_print(periph->path, "lost device\n"); } static void sacleanup(struct cam_periph *periph) { struct sa_softc *softc; int i; softc = (struct sa_softc *)periph->softc; xpt_print(periph->path, "removing device entry\n"); devstat_remove_entry(softc->device_stats); cam_periph_unlock(periph); destroy_dev(softc->devs.ctl_dev); for (i = 0; i < SA_NUM_MODES; i++) { destroy_dev(softc->devs.mode_devs[i].r_dev); destroy_dev(softc->devs.mode_devs[i].nr_dev); destroy_dev(softc->devs.mode_devs[i].er_dev); } cam_periph_lock(periph); free(softc, M_SCSISA); } static void saasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg) { struct cam_periph *periph; periph = (struct cam_periph *)callback_arg; switch (code) { case AC_FOUND_DEVICE: { struct ccb_getdev *cgd; cam_status status; cgd = (struct ccb_getdev *)arg; if (cgd == NULL) break; if (cgd->protocol != PROTO_SCSI) break; if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) break; /* * Allocate a peripheral instance for * this device and start the probe * process. */ status = cam_periph_alloc(saregister, saoninvalidate, sacleanup, sastart, "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, saasync, AC_FOUND_DEVICE, cgd); if (status != CAM_REQ_CMP && status != CAM_REQ_INPROG) printf("saasync: Unable to probe new device " "due to status 0x%x\n", status); break; } default: cam_periph_async(periph, code, path, arg); break; } } static cam_status saregister(struct cam_periph *periph, void *arg) { struct sa_softc *softc; struct ccb_getdev *cgd; struct ccb_pathinq cpi; caddr_t match; int i; cgd = (struct ccb_getdev *)arg; if (periph == NULL) { printf("saregister: periph was NULL!!\n"); return (CAM_REQ_CMP_ERR); } if (cgd == NULL) { printf("saregister: no getdev CCB, can't register device\n"); return (CAM_REQ_CMP_ERR); } softc = (struct sa_softc *) malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); if (softc == NULL) { printf("saregister: Unable to probe new device. " "Unable to allocate softc\n"); return (CAM_REQ_CMP_ERR); } softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); softc->state = SA_STATE_NORMAL; softc->fileno = (daddr_t) -1; softc->blkno = (daddr_t) -1; bioq_init(&softc->bio_queue); periph->softc = softc; /* * See if this device has any quirks. */ match = cam_quirkmatch((caddr_t)&cgd->inq_data, (caddr_t)sa_quirk_table, sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), sizeof(*sa_quirk_table), scsi_inquiry_match); if (match != NULL) { softc->quirks = ((struct sa_quirk_entry *)match)->quirks; softc->last_media_blksize = ((struct sa_quirk_entry *)match)->prefblk; } else softc->quirks = SA_QUIRK_NONE; bzero(&cpi, sizeof(cpi)); xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); cpi.ccb_h.func_code = XPT_PATH_INQ; xpt_action((union ccb *)&cpi); /* * The SA driver supports a blocksize, but we don't know the * blocksize until we media is inserted. So, set a flag to * indicate that the blocksize is unavailable right now. */ cam_periph_unlock(periph); softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); softc->devs.ctl_dev->si_drv1 = periph; for (i = 0; i < SA_NUM_MODES; i++) { softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", periph->periph_name, periph->unit_number, i); softc->devs.mode_devs[i].r_dev->si_drv1 = periph; softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_NR), UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", periph->periph_name, periph->unit_number, i); softc->devs.mode_devs[i].nr_dev->si_drv1 = periph; softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_ER), UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", periph->periph_name, periph->unit_number, i); softc->devs.mode_devs[i].er_dev->si_drv1 = periph; /* * Make the (well known) aliases for the first mode. */ if (i == 0) { struct cdev *alias; alias = make_dev_alias(softc->devs.mode_devs[i].r_dev, "%s%d", periph->periph_name, periph->unit_number); alias->si_drv1 = periph; alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev, "n%s%d", periph->periph_name, periph->unit_number); alias->si_drv1 = periph; alias = make_dev_alias(softc->devs.mode_devs[i].er_dev, "e%s%d", periph->periph_name, periph->unit_number); alias->si_drv1 = periph; } } cam_periph_lock(periph); /* * Add an async callback so that we get * notified if this device goes away. */ xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); xpt_announce_periph(periph, NULL); return (CAM_REQ_CMP); } static void sastart(struct cam_periph *periph, union ccb *start_ccb) { struct sa_softc *softc; softc = (struct sa_softc *)periph->softc; CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); switch (softc->state) { case SA_STATE_NORMAL: { /* Pull a buffer from the queue and get going on it */ struct bio *bp; /* * See if there is a buf with work for us to do.. */ bp = bioq_first(&softc->bio_queue); if (periph->immediate_priority <= periph->pinfo.priority) { CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, ("queuing for immediate ccb\n")); Set_CCB_Type(start_ccb, SA_CCB_WAITING); SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, periph_links.sle); periph->immediate_priority = CAM_PRIORITY_NONE; wakeup(&periph->ccb_list); } else if (bp == NULL) { xpt_release_ccb(start_ccb); } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { struct bio *done_bp; again: softc->queue_count--; bioq_remove(&softc->bio_queue, bp); bp->bio_resid = bp->bio_bcount; done_bp = bp; if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { /* * We now just clear errors in this case * and let the residual be the notifier. */ bp->bio_error = 0; } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { /* * This can only happen if we're reading * in fixed length mode. In this case, * we dump the rest of the list the * same way. */ bp->bio_error = 0; if (bioq_first(&softc->bio_queue) != NULL) { biodone(done_bp); goto again; } } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { bp->bio_error = EIO; bp->bio_flags |= BIO_ERROR; } bp = bioq_first(&softc->bio_queue); /* * Only if we have no other buffers queued up * do we clear the pending error flag. */ if (bp == NULL) softc->flags &= ~SA_FLAG_ERR_PENDING; CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " "%d more buffers queued up\n", (softc->flags & SA_FLAG_ERR_PENDING), (bp != NULL)? "not " : " ", softc->queue_count)); xpt_release_ccb(start_ccb); biodone(done_bp); } else { u_int32_t length; bioq_remove(&softc->bio_queue, bp); softc->queue_count--; if ((softc->flags & SA_FLAG_FIXED) != 0) { if (softc->blk_shift != 0) { length = bp->bio_bcount >> softc->blk_shift; } else if (softc->media_blksize != 0) { length = bp->bio_bcount / softc->media_blksize; } else { bp->bio_error = EIO; xpt_print(periph->path, "zero blocksize" " for FIXED length writes?\n"); biodone(bp); break; } #if 0 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, ("issuing a %d fixed record %s\n", length, (bp->bio_cmd == BIO_READ)? "read" : "write")); #endif } else { length = bp->bio_bcount; #if 0 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, ("issuing a %d variable byte %s\n", length, (bp->bio_cmd == BIO_READ)? "read" : "write")); #endif } devstat_start_transaction_bio(softc->device_stats, bp); /* * Some people have theorized that we should * suppress illegal length indication if we are * running in variable block mode so that we don't * have to request sense every time our requested * block size is larger than the written block. * The residual information from the ccb allows * us to identify this situation anyway. The only * problem with this is that we will not get * information about blocks that are larger than * our read buffer unless we set the block size * in the mode page to something other than 0. * * I believe that this is a non-issue. If user apps * don't adjust their read size to match our record * size, that's just life. Anyway, the typical usage * would be to issue, e.g., 64KB reads and occasionally * have to do deal with 512 byte or 1KB intermediate * records. */ softc->dsreg = (bp->bio_cmd == BIO_READ)? MTIO_DSREG_RD : MTIO_DSREG_WR; scsi_sa_read_write(&start_ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ), FALSE, (softc->flags & SA_FLAG_FIXED) != 0, length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, IO_TIMEOUT); start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); start_ccb->ccb_h.ccb_bp = bp; bp = bioq_first(&softc->bio_queue); xpt_action(start_ccb); } if (bp != NULL) { /* Have more work to do, so ensure we stay scheduled */ xpt_schedule(periph, CAM_PRIORITY_NORMAL); } break; } case SA_STATE_ABNORMAL: default: panic("state 0x%x in sastart", softc->state); break; } } static void sadone(struct cam_periph *periph, union ccb *done_ccb) { struct sa_softc *softc; struct ccb_scsiio *csio; softc = (struct sa_softc *)periph->softc; csio = &done_ccb->csio; switch (CCB_Type(csio)) { case SA_CCB_BUFFER_IO: { struct bio *bp; int error; softc->dsreg = MTIO_DSREG_REST; bp = (struct bio *)done_ccb->ccb_h.ccb_bp; error = 0; if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { /* * A retry was scheduled, so just return. */ return; } } if (error == EIO) { /* * Catastrophic error. Mark the tape as frozen * (we no longer know tape position). * * Return all queued I/O with EIO, and unfreeze * our queue so that future transactions that * attempt to fix this problem can get to the * device. * */ softc->flags |= SA_FLAG_TAPE_FROZEN; bioq_flush(&softc->bio_queue, NULL, EIO); } if (error != 0) { bp->bio_resid = bp->bio_bcount; bp->bio_error = error; bp->bio_flags |= BIO_ERROR; /* * In the error case, position is updated in saerror. */ } else { bp->bio_resid = csio->resid; bp->bio_error = 0; if (csio->resid != 0) { bp->bio_flags |= BIO_ERROR; } if (bp->bio_cmd == BIO_WRITE) { softc->flags |= SA_FLAG_TAPE_WRITTEN; softc->filemarks = 0; } if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && (softc->blkno != (daddr_t) -1)) { if ((softc->flags & SA_FLAG_FIXED) != 0) { u_int32_t l; if (softc->blk_shift != 0) { l = bp->bio_bcount >> softc->blk_shift; } else { l = bp->bio_bcount / softc->media_blksize; } softc->blkno += (daddr_t) l; } else { softc->blkno++; } } } /* * If we had an error (immediate or pending), * release the device queue now. */ if (error || (softc->flags & SA_FLAG_ERR_PENDING)) cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); if (error || bp->bio_resid) { CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("error %d resid %ld count %ld\n", error, bp->bio_resid, bp->bio_bcount)); } biofinish(bp, softc->device_stats, 0); break; } case SA_CCB_WAITING: { /* Caller will release the CCB */ wakeup(&done_ccb->ccb_h.cbfcnp); return; } } xpt_release_ccb(done_ccb); } /* * Mount the tape (make sure it's ready for I/O). */ static int samount(struct cam_periph *periph, int oflags, struct cdev *dev) { struct sa_softc *softc; union ccb *ccb; int error; /* * oflags can be checked for 'kind' of open (read-only check) - later * dev can be checked for a control-mode or compression open - later */ UNUSED_PARAMETER(oflags); UNUSED_PARAMETER(dev); softc = (struct sa_softc *)periph->softc; /* * This should determine if something has happend since the last * open/mount that would invalidate the mount. We do *not* want * to retry this command- we just want the status. But we only * do this if we're mounted already- if we're not mounted, * we don't care about the unit read state and can instead use * this opportunity to attempt to reserve the tape unit. */ if (softc->flags & SA_FLAG_TAPE_MOUNTED) { ccb = cam_periph_getccb(periph, 1); scsi_test_unit_ready(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, softc->device_stats); if (error == ENXIO) { softc->flags &= ~SA_FLAG_TAPE_MOUNTED; scsi_test_unit_ready(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, softc->device_stats); } else if (error) { /* * We don't need to freeze the tape because we * will now attempt to rewind/load it. */ softc->flags &= ~SA_FLAG_TAPE_MOUNTED; if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { xpt_print(periph->path, "error %d on TUR in samount\n", error); } } } else { error = sareservereleaseunit(periph, TRUE); if (error) { return (error); } ccb = cam_periph_getccb(periph, 1); scsi_test_unit_ready(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, softc->device_stats); } if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { struct scsi_read_block_limits_data *rblim = NULL; int comp_enabled, comp_supported; u_int8_t write_protect, guessing = 0; /* * Clear out old state. */ softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); softc->filemarks = 0; /* * *Very* first off, make sure we're loaded to BOT. */ scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, softc->device_stats); /* * In case this doesn't work, do a REWIND instead */ if (error) { scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, softc->device_stats); } if (error) { xpt_release_ccb(ccb); goto exit; } /* * Do a dummy test read to force access to the * media so that the drive will really know what's * there. We actually don't really care what the * blocksize on tape is and don't expect to really * read a full record. */ rblim = (struct scsi_read_block_limits_data *) malloc(8192, M_SCSISA, M_NOWAIT); if (rblim == NULL) { xpt_print(periph->path, "no memory for test read\n"); xpt_release_ccb(ccb); error = ENOMEM; goto exit; } if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { scsi_sa_read_write(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, (void *) rblim, 8192, SSD_FULL_SIZE, IO_TIMEOUT); (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, softc->device_stats); scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); if (error) { xpt_print(periph->path, "unable to rewind after test read\n"); xpt_release_ccb(ccb); goto exit; } } /* * Next off, determine block limits. */ scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); xpt_release_ccb(ccb); if (error != 0) { /* * If it's less than SCSI-2, READ BLOCK LIMITS is not * a MANDATORY command. Anyway- it doesn't matter- * we can proceed anyway. */ softc->blk_gran = 0; softc->max_blk = ~0; softc->min_blk = 0; } else { if (softc->scsi_rev >= SCSI_REV_SPC) { softc->blk_gran = RBL_GRAN(rblim); } else { softc->blk_gran = 0; } /* * We take max_blk == min_blk to mean a default to * fixed mode- but note that whatever we get out of * sagetparams below will actually determine whether * we are actually *in* fixed mode. */ softc->max_blk = scsi_3btoul(rblim->maximum); softc->min_blk = scsi_2btoul(rblim->minimum); } /* * Next, perform a mode sense to determine * current density, blocksize, compression etc. */ error = sagetparams(periph, SA_PARAM_ALL, &softc->media_blksize, &softc->media_density, &softc->media_numblks, &softc->buffer_mode, &write_protect, &softc->speed, &comp_supported, &comp_enabled, &softc->comp_algorithm, NULL); if (error != 0) { /* * We could work a little harder here. We could * adjust our attempts to get information. It * might be an ancient tape drive. If someone * nudges us, we'll do that. */ goto exit; } /* * If no quirk has determined that this is a device that is * preferred to be in fixed or variable mode, now is the time * to find out. */ if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { guessing = 1; /* * This could be expensive to find out. Luckily we * only need to do this once. If we start out in * 'default' mode, try and set ourselves to one * of the densities that would determine a wad * of other stuff. Go from highest to lowest. */ if (softc->media_density == SCSI_DEFAULT_DENSITY) { int i; static u_int8_t ctry[] = { SCSI_DENSITY_HALFINCH_PE, SCSI_DENSITY_HALFINCH_6250C, SCSI_DENSITY_HALFINCH_6250, SCSI_DENSITY_HALFINCH_1600, SCSI_DENSITY_HALFINCH_800, SCSI_DENSITY_QIC_4GB, SCSI_DENSITY_QIC_2GB, SCSI_DENSITY_QIC_525_320, SCSI_DENSITY_QIC_150, SCSI_DENSITY_QIC_120, SCSI_DENSITY_QIC_24, SCSI_DENSITY_QIC_11_9TRK, SCSI_DENSITY_QIC_11_4TRK, SCSI_DENSITY_QIC_1320, SCSI_DENSITY_QIC_3080, 0 }; for (i = 0; ctry[i]; i++) { error = sasetparams(periph, SA_PARAM_DENSITY, 0, ctry[i], 0, SF_NO_PRINT); if (error == 0) { softc->media_density = ctry[i]; break; } } } switch (softc->media_density) { case SCSI_DENSITY_QIC_11_4TRK: case SCSI_DENSITY_QIC_11_9TRK: case SCSI_DENSITY_QIC_24: case SCSI_DENSITY_QIC_120: case SCSI_DENSITY_QIC_150: case SCSI_DENSITY_QIC_525_320: case SCSI_DENSITY_QIC_1320: case SCSI_DENSITY_QIC_3080: softc->quirks &= ~SA_QUIRK_2FM; softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; softc->last_media_blksize = 512; break; case SCSI_DENSITY_QIC_4GB: case SCSI_DENSITY_QIC_2GB: softc->quirks &= ~SA_QUIRK_2FM; softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; softc->last_media_blksize = 1024; break; default: softc->last_media_blksize = softc->media_blksize; softc->quirks |= SA_QUIRK_VARIABLE; break; } } /* * If no quirk has determined that this is a device that needs * to have 2 Filemarks at EOD, now is the time to find out. */ if ((softc->quirks & SA_QUIRK_2FM) == 0) { switch (softc->media_density) { case SCSI_DENSITY_HALFINCH_800: case SCSI_DENSITY_HALFINCH_1600: case SCSI_DENSITY_HALFINCH_6250: case SCSI_DENSITY_HALFINCH_6250C: case SCSI_DENSITY_HALFINCH_PE: softc->quirks &= ~SA_QUIRK_1FM; softc->quirks |= SA_QUIRK_2FM; break; default: break; } } /* * Now validate that some info we got makes sense. */ if ((softc->max_blk < softc->media_blksize) || (softc->min_blk > softc->media_blksize && softc->media_blksize)) { xpt_print(periph->path, "BLOCK LIMITS (%d..%d) could not match current " "block settings (%d)- adjusting\n", softc->min_blk, softc->max_blk, softc->media_blksize); softc->max_blk = softc->min_blk = softc->media_blksize; } /* * Now put ourselves into the right frame of mind based * upon quirks... */ tryagain: /* * If we want to be in FIXED mode and our current blocksize * is not equal to our last blocksize (if nonzero), try and * set ourselves to this last blocksize (as the 'preferred' * block size). The initial quirkmatch at registry sets the * initial 'last' blocksize. If, for whatever reason, this * 'last' blocksize is zero, set the blocksize to 512, * or min_blk if that's larger. */ if ((softc->quirks & SA_QUIRK_FIXED) && (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && (softc->media_blksize != softc->last_media_blksize)) { softc->media_blksize = softc->last_media_blksize; if (softc->media_blksize == 0) { softc->media_blksize = 512; if (softc->media_blksize < softc->min_blk) { softc->media_blksize = softc->min_blk; } } error = sasetparams(periph, SA_PARAM_BLOCKSIZE, softc->media_blksize, 0, 0, SF_NO_PRINT); if (error) { xpt_print(periph->path, "unable to set fixed blocksize to %d\n", softc->media_blksize); goto exit; } } if ((softc->quirks & SA_QUIRK_VARIABLE) && (softc->media_blksize != 0)) { softc->last_media_blksize = softc->media_blksize; softc->media_blksize = 0; error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 0, 0, 0, SF_NO_PRINT); if (error) { /* * If this fails and we were guessing, just * assume that we got it wrong and go try * fixed block mode. Don't even check against * density code at this point. */ if (guessing) { softc->quirks &= ~SA_QUIRK_VARIABLE; softc->quirks |= SA_QUIRK_FIXED; if (softc->last_media_blksize == 0) softc->last_media_blksize = 512; goto tryagain; } xpt_print(periph->path, "unable to set variable blocksize\n"); goto exit; } } /* * Now that we have the current block size, * set up some parameters for sastart's usage. */ if (softc->media_blksize) { softc->flags |= SA_FLAG_FIXED; if (powerof2(softc->media_blksize)) { softc->blk_shift = ffs(softc->media_blksize) - 1; softc->blk_mask = softc->media_blksize - 1; } else { softc->blk_mask = ~0; softc->blk_shift = 0; } } else { /* * The SCSI-3 spec allows 0 to mean "unspecified". * The SCSI-1 spec allows 0 to mean 'infinite'. * * Either works here. */ if (softc->max_blk == 0) { softc->max_blk = ~0; } softc->blk_shift = 0; if (softc->blk_gran != 0) { softc->blk_mask = softc->blk_gran - 1; } else { softc->blk_mask = 0; } } if (write_protect) softc->flags |= SA_FLAG_TAPE_WP; if (comp_supported) { if (softc->saved_comp_algorithm == 0) softc->saved_comp_algorithm = softc->comp_algorithm; softc->flags |= SA_FLAG_COMP_SUPP; if (comp_enabled) softc->flags |= SA_FLAG_COMP_ENABLED; } else softc->flags |= SA_FLAG_COMP_UNSUPP; if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 0, 0, SF_NO_PRINT); if (error == 0) { softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; } else { xpt_print(periph->path, "unable to set buffered mode\n"); } error = 0; /* not an error */ } if (error == 0) { softc->flags |= SA_FLAG_TAPE_MOUNTED; } exit: if (rblim != NULL) free(rblim, M_SCSISA); if (error != 0) { softc->dsreg = MTIO_DSREG_NIL; } else { softc->fileno = softc->blkno = 0; softc->dsreg = MTIO_DSREG_REST; } #ifdef SA_1FM_AT_EOD if ((softc->quirks & SA_QUIRK_2FM) == 0) softc->quirks |= SA_QUIRK_1FM; #else if ((softc->quirks & SA_QUIRK_1FM) == 0) softc->quirks |= SA_QUIRK_2FM; #endif } else xpt_release_ccb(ccb); /* * If we return an error, we're not mounted any more, * so release any device reservation. */ if (error != 0) { (void) sareservereleaseunit(periph, FALSE); } else { /* * Clear I/O residual. */ softc->last_io_resid = 0; softc->last_ctl_resid = 0; } return (error); } /* * How many filemarks do we need to write if we were to terminate the * tape session right now? Note that this can be a negative number */ static int samarkswanted(struct cam_periph *periph) { int markswanted; struct sa_softc *softc; softc = (struct sa_softc *)periph->softc; markswanted = 0; if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { markswanted++; if (softc->quirks & SA_QUIRK_2FM) markswanted++; } markswanted -= softc->filemarks; return (markswanted); } static int sacheckeod(struct cam_periph *periph) { int error; int markswanted; markswanted = samarkswanted(periph); if (markswanted > 0) { error = sawritefilemarks(periph, markswanted, FALSE); } else { error = 0; } return (error); } static int saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) { static const char *toobig = "%d-byte tape record bigger than supplied buffer\n"; struct cam_periph *periph; struct sa_softc *softc; struct ccb_scsiio *csio; struct scsi_sense_data *sense; uint64_t resid = 0; int64_t info = 0; cam_status status; int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; int sense_len; uint8_t stream_bits; periph = xpt_path_periph(ccb->ccb_h.path); softc = (struct sa_softc *)periph->softc; csio = &ccb->csio; sense = &csio->sense_data; sense_len = csio->sense_len - csio->sense_resid; scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, &asc, &ascq, /*show_errors*/ 1); if (asc != -1 && ascq != -1) aqvalid = 1; else aqvalid = 0; if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) stream_valid = 1; else stream_valid = 0; error = 0; status = csio->ccb_h.status & CAM_STATUS_MASK; /* * Calculate/latch up, any residuals... We do this in a funny 2-step * so we can print stuff here if we have CAM_DEBUG enabled for this * unit. */ if (status == CAM_SCSI_STATUS_ERROR) { if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, &info) == 0) { if ((softc->flags & SA_FLAG_FIXED) != 0) resid *= softc->media_blksize; } else { resid = csio->dxfer_len; info = resid; if ((softc->flags & SA_FLAG_FIXED) != 0) { if (softc->media_blksize) info /= softc->media_blksize; } } if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, sizeof (struct scsi_sense_data)); bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, (int) csio->cdb_len); softc->last_io_resid = resid; softc->last_resid_was_io = 1; } else { bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, sizeof (struct scsi_sense_data)); bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, (int) csio->cdb_len); softc->last_ctl_resid = resid; softc->last_resid_was_io = 0; } CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, sense_key, asc, ascq, status, (stream_valid) ? stream_bits : 0, (intmax_t)resid, csio->dxfer_len)); } else { CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Cam Status 0x%x\n", status)); } switch (status) { case CAM_REQ_CMP: return (0); case CAM_SCSI_STATUS_ERROR: /* * If a read/write command, we handle it here. */ if (CCB_Type(csio) != SA_CCB_WAITING) { break; } /* * If this was just EOM/EOP, Filemark, Setmark or ILI detected * on a non read/write command, we assume it's not an error * and propagate the residule and return. */ if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { csio->resid = resid; QFRLS(ccb); return (0); } /* * Otherwise, we let the common code handle this. */ return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); /* * XXX: To Be Fixed * We cannot depend upon CAM honoring retry counts for these. */ case CAM_SCSI_BUS_RESET: case CAM_BDR_SENT: if (ccb->ccb_h.retry_count <= 0) { return (EIO); } /* FALLTHROUGH */ default: return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); } /* * Handle filemark, end of tape, mismatched record sizes.... * From this point out, we're only handling read/write cases. * Handle writes && reads differently. */ if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { csio->resid = resid; error = ENOSPC; } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) { softc->flags |= SA_FLAG_EOM_PENDING; /* * Grotesque as it seems, the few times * I've actually seen a non-zero resid, * the tape drive actually lied and had * written all the data!. */ csio->resid = 0; } } else { csio->resid = resid; if (sense_key == SSD_KEY_BLANK_CHECK) { if (softc->quirks & SA_QUIRK_1FM) { error = 0; softc->flags |= SA_FLAG_EOM_PENDING; } else { error = EIO; } } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){ if (softc->flags & SA_FLAG_FIXED) { error = -1; softc->flags |= SA_FLAG_EOF_PENDING; } /* * Unconditionally, if we detected a filemark on a read, * mark that we've run moved a file ahead. */ if (softc->fileno != (daddr_t) -1) { softc->fileno++; softc->blkno = 0; csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; } } } /* * Incorrect Length usually applies to read, but can apply to writes. */ if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) { if (info < 0) { xpt_print(csio->ccb_h.path, toobig, csio->dxfer_len - info); csio->resid = csio->dxfer_len; error = EIO; } else { csio->resid = resid; if (softc->flags & SA_FLAG_FIXED) { softc->flags |= SA_FLAG_EIO_PENDING; } /* * Bump the block number if we hadn't seen a filemark. * Do this independent of errors (we've moved anyway). */ if ((stream_valid == 0) || (stream_bits & SSD_FILEMARK) == 0) { if (softc->blkno != (daddr_t) -1) { softc->blkno++; csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; } } } } if (error <= 0) { /* * Unfreeze the queue if frozen as we're not returning anything * to our waiters that would indicate an I/O error has occurred * (yet). */ QFRLS(ccb); error = 0; } return (error); } static int sagetparams(struct cam_periph *periph, sa_params params_to_get, u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, sa_comp_t *tcs) { union ccb *ccb; void *mode_buffer; struct scsi_mode_header_6 *mode_hdr; struct scsi_mode_blk_desc *mode_blk; int mode_buffer_len; struct sa_softc *softc; u_int8_t cpage; int error; cam_status status; softc = (struct sa_softc *)periph->softc; ccb = cam_periph_getccb(periph, 1); if (softc->quirks & SA_QUIRK_NO_CPAGE) cpage = SA_DEVICE_CONFIGURATION_PAGE; else cpage = SA_DATA_COMPRESSION_PAGE; retry: mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); if (params_to_get & SA_PARAM_COMPRESSION) { if (softc->quirks & SA_QUIRK_NOCOMP) { *comp_supported = FALSE; params_to_get &= ~SA_PARAM_COMPRESSION; } else mode_buffer_len += sizeof (sa_comp_t); } /* XXX Fix M_NOWAIT */ mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); if (mode_buffer == NULL) { xpt_release_ccb(ccb); return (ENOMEM); } mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; /* it is safe to retry this */ scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, softc->device_stats); status = ccb->ccb_h.status & CAM_STATUS_MASK; if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { /* * Hmm. Let's see if we can try another page... * If we've already done that, give up on compression * for this device and remember this for the future * and attempt the request without asking for compression * info. */ if (cpage == SA_DATA_COMPRESSION_PAGE) { cpage = SA_DEVICE_CONFIGURATION_PAGE; goto retry; } softc->quirks |= SA_QUIRK_NOCOMP; free(mode_buffer, M_SCSISA); goto retry; } else if (status == CAM_SCSI_STATUS_ERROR) { /* Tell the user about the fatal error. */ scsi_sense_print(&ccb->csio); goto sagetparamsexit; } /* * If the user only wants the compression information, and * the device doesn't send back the block descriptor, it's * no big deal. If the user wants more than just * compression, though, and the device doesn't pass back the * block descriptor, we need to send another mode sense to * get the block descriptor. */ if ((mode_hdr->blk_desc_len == 0) && (params_to_get & SA_PARAM_COMPRESSION) && (params_to_get & ~(SA_PARAM_COMPRESSION))) { /* * Decrease the mode buffer length by the size of * the compression page, to make sure the data * there doesn't get overwritten. */ mode_buffer_len -= sizeof (sa_comp_t); /* * Now move the compression page that we presumably * got back down the memory chunk a little bit so * it doesn't get spammed. */ bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); bzero(&mode_hdr[0], sizeof (mode_hdr[0])); /* * Now, we issue another mode sense and just ask * for the block descriptor, etc. */ scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, softc->device_stats); if (error != 0) goto sagetparamsexit; } if (params_to_get & SA_PARAM_BLOCKSIZE) *blocksize = scsi_3btoul(mode_blk->blklen); if (params_to_get & SA_PARAM_NUMBLOCKS) *numblocks = scsi_3btoul(mode_blk->nblocks); if (params_to_get & SA_PARAM_BUFF_MODE) *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; if (params_to_get & SA_PARAM_DENSITY) *density = mode_blk->density; if (params_to_get & SA_PARAM_WP) *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; if (params_to_get & SA_PARAM_SPEED) *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; if (params_to_get & SA_PARAM_COMPRESSION) { sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; if (cpage == SA_DATA_COMPRESSION_PAGE) { struct scsi_data_compression_page *cp = &ntcs->dcomp; *comp_supported = (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; *comp_enabled = (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; *comp_algorithm = scsi_4btoul(cp->comp_algorithm); } else { struct scsi_dev_conf_page *cp = &ntcs->dconf; /* * We don't really know whether this device supports * Data Compression if the algorithm field is * zero. Just say we do. */ *comp_supported = TRUE; *comp_enabled = (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; *comp_algorithm = cp->sel_comp_alg; } if (tcs != NULL) bcopy(ntcs, tcs, sizeof (sa_comp_t)); } if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { int idx; char *xyz = mode_buffer; xpt_print_path(periph->path); printf("Mode Sense Data="); for (idx = 0; idx < mode_buffer_len; idx++) printf(" 0x%02x", xyz[idx] & 0xff); printf("\n"); } sagetparamsexit: xpt_release_ccb(ccb); free(mode_buffer, M_SCSISA); return (error); } /* * The purpose of this function is to set one of four different parameters * for a tape drive: * - blocksize * - density * - compression / compression algorithm * - buffering mode * * The assumption is that this will be called from saioctl(), and therefore * from a process context. Thus the waiting malloc calls below. If that * assumption ever changes, the malloc calls should be changed to be * NOWAIT mallocs. * * Any or all of the four parameters may be set when this function is * called. It should handle setting more than one parameter at once. */ static int sasetparams(struct cam_periph *periph, sa_params params_to_set, u_int32_t blocksize, u_int8_t density, u_int32_t calg, u_int32_t sense_flags) { struct sa_softc *softc; u_int32_t current_blocksize; u_int32_t current_calg; u_int8_t current_density; u_int8_t current_speed; int comp_enabled, comp_supported; void *mode_buffer; int mode_buffer_len; struct scsi_mode_header_6 *mode_hdr; struct scsi_mode_blk_desc *mode_blk; sa_comp_t *ccomp, *cpage; int buff_mode; union ccb *ccb = NULL; int error; softc = (struct sa_softc *)periph->softc; ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); if (ccomp == NULL) return (ENOMEM); /* * Since it doesn't make sense to set the number of blocks, or * write protection, we won't try to get the current value. We * always want to get the blocksize, so we can set it back to the * proper value. */ error = sagetparams(periph, params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, ¤t_speed, &comp_supported, &comp_enabled, ¤t_calg, ccomp); if (error != 0) { free(ccomp, M_SCSISA); return (error); } mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); if (params_to_set & SA_PARAM_COMPRESSION) mode_buffer_len += sizeof (sa_comp_t); mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); if (mode_buffer == NULL) { free(ccomp, M_SCSISA); return (ENOMEM); } mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; ccb = cam_periph_getccb(periph, 1); retry: if (params_to_set & SA_PARAM_COMPRESSION) { if (mode_blk) { cpage = (sa_comp_t *)&mode_blk[1]; } else { cpage = (sa_comp_t *)&mode_hdr[1]; } bcopy(ccomp, cpage, sizeof (sa_comp_t)); cpage->hdr.pagecode &= ~0x80; } else cpage = NULL; /* * If the caller wants us to set the blocksize, use the one they * pass in. Otherwise, use the blocksize we got back from the * mode select above. */ if (mode_blk) { if (params_to_set & SA_PARAM_BLOCKSIZE) scsi_ulto3b(blocksize, mode_blk->blklen); else scsi_ulto3b(current_blocksize, mode_blk->blklen); /* * Set density if requested, else preserve old density. * SCSI_SAME_DENSITY only applies to SCSI-2 or better * devices, else density we've latched up in our softc. */ if (params_to_set & SA_PARAM_DENSITY) { mode_blk->density = density; } else if (softc->scsi_rev > SCSI_REV_CCS) { mode_blk->density = SCSI_SAME_DENSITY; } else { mode_blk->density = softc->media_density; } } /* * For mode selects, these two fields must be zero. */ mode_hdr->data_length = 0; mode_hdr->medium_type = 0; /* set the speed to the current value */ mode_hdr->dev_spec = current_speed; /* if set, set single-initiator buffering mode */ if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; } if (mode_blk) mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); else mode_hdr->blk_desc_len = 0; /* * First, if the user wants us to set the compression algorithm or * just turn compression on, check to make sure that this drive * supports compression. */ if (params_to_set & SA_PARAM_COMPRESSION) { /* * If the compression algorithm is 0, disable compression. * If the compression algorithm is non-zero, enable * compression and set the compression type to the * specified compression algorithm, unless the algorithm is * MT_COMP_ENABLE. In that case, we look at the * compression algorithm that is currently set and if it is * non-zero, we leave it as-is. If it is zero, and we have * saved a compression algorithm from a time when * compression was enabled before, set the compression to * the saved value. */ switch (ccomp->hdr.pagecode & ~0x80) { case SA_DEVICE_CONFIGURATION_PAGE: { struct scsi_dev_conf_page *dcp = &cpage->dconf; if (calg == 0) { dcp->sel_comp_alg = SA_COMP_NONE; break; } if (calg != MT_COMP_ENABLE) { dcp->sel_comp_alg = calg; } else if (dcp->sel_comp_alg == SA_COMP_NONE && softc->saved_comp_algorithm != 0) { dcp->sel_comp_alg = softc->saved_comp_algorithm; } break; } case SA_DATA_COMPRESSION_PAGE: if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { struct scsi_data_compression_page *dcp = &cpage->dcomp; if (calg == 0) { /* * Disable compression, but leave the * decompression and the capability bit * alone. */ dcp->dce_and_dcc = SA_DCP_DCC; dcp->dde_and_red |= SA_DCP_DDE; break; } /* enable compression && decompression */ dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; dcp->dde_and_red |= SA_DCP_DDE; /* * If there, use compression algorithm from caller. * Otherwise, if there's a saved compression algorithm * and there is no current algorithm, use the saved * algorithm. Else parrot back what we got and hope * for the best. */ if (calg != MT_COMP_ENABLE) { scsi_ulto4b(calg, dcp->comp_algorithm); scsi_ulto4b(calg, dcp->decomp_algorithm); } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && softc->saved_comp_algorithm != 0) { scsi_ulto4b(softc->saved_comp_algorithm, dcp->comp_algorithm); scsi_ulto4b(softc->saved_comp_algorithm, dcp->decomp_algorithm); } break; } /* * Compression does not appear to be supported- * at least via the DATA COMPRESSION page. It * would be too much to ask us to believe that * the page itself is supported, but incorrectly * reports an ability to manipulate data compression, * so we'll assume that this device doesn't support * compression. We can just fall through for that. */ /* FALLTHROUGH */ default: /* * The drive doesn't seem to support compression, * so turn off the set compression bit. */ params_to_set &= ~SA_PARAM_COMPRESSION; xpt_print(periph->path, "device does not seem to support compression\n"); /* * If that was the only thing the user wanted us to set, * clean up allocated resources and return with * 'operation not supported'. */ if (params_to_set == SA_PARAM_NONE) { free(mode_buffer, M_SCSISA); xpt_release_ccb(ccb); return (ENODEV); } /* * That wasn't the only thing the user wanted us to set. * So, decrease the stated mode buffer length by the * size of the compression mode page. */ mode_buffer_len -= sizeof(sa_comp_t); } } /* It is safe to retry this operation */ scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); error = cam_periph_runccb(ccb, saerror, 0, sense_flags, softc->device_stats); if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { int idx; char *xyz = mode_buffer; xpt_print_path(periph->path); printf("Err%d, Mode Select Data=", error); for (idx = 0; idx < mode_buffer_len; idx++) printf(" 0x%02x", xyz[idx] & 0xff); printf("\n"); } if (error) { /* * If we can, try without setting density/blocksize. */ if (mode_blk) { if ((params_to_set & (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { mode_blk = NULL; goto retry; } } else { mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; cpage = (sa_comp_t *)&mode_blk[1]; } /* * If we were setting the blocksize, and that failed, we * want to set it to its original value. If we weren't * setting the blocksize, we don't want to change it. */ scsi_ulto3b(current_blocksize, mode_blk->blklen); /* * Set density if requested, else preserve old density. * SCSI_SAME_DENSITY only applies to SCSI-2 or better * devices, else density we've latched up in our softc. */ if (params_to_set & SA_PARAM_DENSITY) { mode_blk->density = current_density; } else if (softc->scsi_rev > SCSI_REV_CCS) { mode_blk->density = SCSI_SAME_DENSITY; } else { mode_blk->density = softc->media_density; } if (params_to_set & SA_PARAM_COMPRESSION) bcopy(ccomp, cpage, sizeof (sa_comp_t)); /* * The retry count is the only CCB field that might have been * changed that we care about, so reset it back to 1. */ ccb->ccb_h.retry_count = 1; cam_periph_runccb(ccb, saerror, 0, sense_flags, softc->device_stats); } xpt_release_ccb(ccb); if (ccomp != NULL) free(ccomp, M_SCSISA); if (params_to_set & SA_PARAM_COMPRESSION) { if (error) { softc->flags &= ~SA_FLAG_COMP_ENABLED; /* * Even if we get an error setting compression, * do not say that we don't support it. We could * have been wrong, or it may be media specific. * softc->flags &= ~SA_FLAG_COMP_SUPP; */ softc->saved_comp_algorithm = softc->comp_algorithm; softc->comp_algorithm = 0; } else { softc->flags |= SA_FLAG_COMP_ENABLED; softc->comp_algorithm = calg; } } free(mode_buffer, M_SCSISA); return (error); } static void saprevent(struct cam_periph *periph, int action) { struct sa_softc *softc; union ccb *ccb; int error, sf; softc = (struct sa_softc *)periph->softc; if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) return; if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) return; /* * We can be quiet about illegal requests. */ if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { sf = 0; } else sf = SF_QUIET_IR; ccb = cam_periph_getccb(periph, 1); /* It is safe to retry this operation */ scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, SSD_FULL_SIZE, SCSIOP_TIMEOUT); error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); if (error == 0) { if (action == PR_ALLOW) softc->flags &= ~SA_FLAG_TAPE_LOCKED; else softc->flags |= SA_FLAG_TAPE_LOCKED; } xpt_release_ccb(ccb); } static int sarewind(struct cam_periph *periph) { union ccb *ccb; struct sa_softc *softc; int error; softc = (struct sa_softc *)periph->softc; ccb = cam_periph_getccb(periph, 1); /* It is safe to retry this operation */ scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); softc->dsreg = MTIO_DSREG_REW; error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); softc->dsreg = MTIO_DSREG_REST; xpt_release_ccb(ccb); if (error == 0) softc->fileno = softc->blkno = (daddr_t) 0; else softc->fileno = softc->blkno = (daddr_t) -1; return (error); } static int saspace(struct cam_periph *periph, int count, scsi_space_code code) { union ccb *ccb; struct sa_softc *softc; int error; softc = (struct sa_softc *)periph->softc; ccb = cam_periph_getccb(periph, 1); /* This cannot be retried */ scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, SSD_FULL_SIZE, SPACE_TIMEOUT); /* * Clear residual because we will be using it. */ softc->last_ctl_resid = 0; softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); softc->dsreg = MTIO_DSREG_REST; xpt_release_ccb(ccb); /* * If a spacing operation has failed, we need to invalidate * this mount. * * If the spacing operation was setmarks or to end of recorded data, * we no longer know our relative position. * * If the spacing operations was spacing files in reverse, we * take account of the residual, but still check against less * than zero- if we've gone negative, we must have hit BOT. * * If the spacing operations was spacing records in reverse and * we have a residual, we've either hit BOT or hit a filemark. * In the former case, we know our new record number (0). In * the latter case, we have absolutely no idea what the real * record number is- we've stopped between the end of the last * record in the previous file and the filemark that stopped * our spacing backwards. */ if (error) { softc->fileno = softc->blkno = (daddr_t) -1; } else if (code == SS_SETMARKS || code == SS_EOD) { softc->fileno = softc->blkno = (daddr_t) -1; } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { softc->fileno += (count - softc->last_ctl_resid); if (softc->fileno < 0) /* we must of hit BOT */ softc->fileno = 0; softc->blkno = 0; } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { softc->blkno += (count - softc->last_ctl_resid); if (count < 0) { if (softc->last_ctl_resid || softc->blkno < 0) { if (softc->fileno == 0) { softc->blkno = 0; } else { softc->blkno = (daddr_t) -1; } } } } return (error); } static int sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) { union ccb *ccb; struct sa_softc *softc; int error, nwm = 0; softc = (struct sa_softc *)periph->softc; if (softc->open_rdonly) return (EBADF); ccb = cam_periph_getccb(periph, 1); /* * Clear residual because we will be using it. */ softc->last_ctl_resid = 0; softc->dsreg = MTIO_DSREG_FMK; /* this *must* not be retried */ scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); softc->dsreg = MTIO_DSREG_REST; error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); if (error == 0 && nmarks) { struct sa_softc *softc = (struct sa_softc *)periph->softc; nwm = nmarks - softc->last_ctl_resid; softc->filemarks += nwm; } xpt_release_ccb(ccb); /* * Update relative positions (if we're doing that). */ if (error) { softc->fileno = softc->blkno = (daddr_t) -1; } else if (softc->fileno != (daddr_t) -1) { softc->fileno += nwm; softc->blkno = 0; } return (error); } static int sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) { struct scsi_tape_position_data loc; union ccb *ccb; struct sa_softc *softc = (struct sa_softc *)periph->softc; int error; /* * We try and flush any buffered writes here if we were writing * and we're trying to get hardware block position. It eats * up performance substantially, but I'm wary of drive firmware. * * I think that *logical* block position is probably okay- * but hardware block position might have to wait for data * to hit media to be valid. Caveat Emptor. */ if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { error = sawritefilemarks(periph, 0, 0); if (error && error != EACCES) return (error); } ccb = cam_periph_getccb(periph, 1); scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); softc->dsreg = MTIO_DSREG_RBSY; error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); softc->dsreg = MTIO_DSREG_REST; if (error == 0) { if (loc.flags & SA_RPOS_UNCERTAIN) { error = EINVAL; /* nothing is certain */ } else { *blkptr = scsi_4btoul(loc.firstblk); } } xpt_release_ccb(ccb); return (error); } static int sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) { union ccb *ccb; struct sa_softc *softc; int error; /* * We used to try and flush any buffered writes here. * Now we push this onto user applications to either * flush the pending writes themselves (via a zero count * WRITE FILEMARKS command) or they can trust their tape * drive to do this correctly for them. */ softc = (struct sa_softc *)periph->softc; ccb = cam_periph_getccb(periph, 1); scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); softc->dsreg = MTIO_DSREG_POS; error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); softc->dsreg = MTIO_DSREG_REST; xpt_release_ccb(ccb); /* * Note relative file && block number position as now unknown. */ softc->fileno = softc->blkno = (daddr_t) -1; return (error); } static int saretension(struct cam_periph *periph) { union ccb *ccb; struct sa_softc *softc; int error; softc = (struct sa_softc *)periph->softc; ccb = cam_periph_getccb(periph, 1); /* It is safe to retry this operation */ scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); softc->dsreg = MTIO_DSREG_TEN; error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); softc->dsreg = MTIO_DSREG_REST; xpt_release_ccb(ccb); if (error == 0) softc->fileno = softc->blkno = (daddr_t) 0; else softc->fileno = softc->blkno = (daddr_t) -1; return (error); } static int sareservereleaseunit(struct cam_periph *periph, int reserve) { union ccb *ccb; struct sa_softc *softc; int error; softc = (struct sa_softc *)periph->softc; ccb = cam_periph_getccb(periph, 1); /* It is safe to retry this operation */ scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); softc->dsreg = MTIO_DSREG_RBSY; error = cam_periph_runccb(ccb, saerror, 0, SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); softc->dsreg = MTIO_DSREG_REST; xpt_release_ccb(ccb); /* * If the error was Illegal Request, then the device doesn't support * RESERVE/RELEASE. This is not an error. */ if (error == EINVAL) { error = 0; } return (error); } static int saloadunload(struct cam_periph *periph, int load) { union ccb *ccb; struct sa_softc *softc; int error; softc = (struct sa_softc *)periph->softc; ccb = cam_periph_getccb(periph, 1); /* It is safe to retry this operation */ scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); softc->dsreg = MTIO_DSREG_REST; xpt_release_ccb(ccb); if (error || load == 0) softc->fileno = softc->blkno = (daddr_t) -1; else if (error == 0) softc->fileno = softc->blkno = (daddr_t) 0; return (error); } static int saerase(struct cam_periph *periph, int longerase) { union ccb *ccb; struct sa_softc *softc; int error; softc = (struct sa_softc *)periph->softc; if (softc->open_rdonly) return (EBADF); ccb = cam_periph_getccb(periph, 1); scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, SSD_FULL_SIZE, ERASE_TIMEOUT); softc->dsreg = MTIO_DSREG_ZER; error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); softc->dsreg = MTIO_DSREG_REST; xpt_release_ccb(ccb); return (error); } #endif /* _KERNEL */ /* * Read tape block limits command. */ void scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), u_int8_t tag_action, struct scsi_read_block_limits_data *rlimit_buf, u_int8_t sense_len, u_int32_t timeout) { struct scsi_read_block_limits *scsi_cmd; cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, sizeof(*scsi_cmd), timeout); scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; bzero(scsi_cmd, sizeof(*scsi_cmd)); scsi_cmd->opcode = READ_BLOCK_LIMITS; } void scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), u_int8_t tag_action, int readop, int sli, int fixed, u_int32_t length, u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) { struct scsi_sa_rw *scsi_cmd; scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; scsi_cmd->sli_fixed = 0; if (sli && readop) scsi_cmd->sli_fixed |= SAR_SLI; if (fixed) scsi_cmd->sli_fixed |= SARW_FIXED; scsi_ulto3b(length, scsi_cmd->length); scsi_cmd->control = 0; cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, tag_action, data_ptr, dxfer_len, sense_len, sizeof(*scsi_cmd), timeout); } void scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), u_int8_t tag_action, int immediate, int eot, int reten, int load, u_int8_t sense_len, u_int32_t timeout) { struct scsi_load_unload *scsi_cmd; scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; bzero(scsi_cmd, sizeof(*scsi_cmd)); scsi_cmd->opcode = LOAD_UNLOAD; if (immediate) scsi_cmd->immediate = SLU_IMMED; if (eot) scsi_cmd->eot_reten_load |= SLU_EOT; if (reten) scsi_cmd->eot_reten_load |= SLU_RETEN; if (load) scsi_cmd->eot_reten_load |= SLU_LOAD; cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); } void scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), u_int8_t tag_action, int immediate, u_int8_t sense_len, u_int32_t timeout) { struct scsi_rewind *scsi_cmd; scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; bzero(scsi_cmd, sizeof(*scsi_cmd)); scsi_cmd->opcode = REWIND; if (immediate) scsi_cmd->immediate = SREW_IMMED; cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); } void scsi_space(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), u_int8_t tag_action, scsi_space_code code, u_int32_t count, u_int8_t sense_len, u_int32_t timeout) { struct scsi_space *scsi_cmd; scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; scsi_cmd->opcode = SPACE; scsi_cmd->code = code; scsi_ulto3b(count, scsi_cmd->count); scsi_cmd->control = 0; cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); } void scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), u_int8_t tag_action, int immediate, int setmark, u_int32_t num_marks, u_int8_t sense_len, u_int32_t timeout) { struct scsi_write_filemarks *scsi_cmd; scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; bzero(scsi_cmd, sizeof(*scsi_cmd)); scsi_cmd->opcode = WRITE_FILEMARKS; if (immediate) scsi_cmd->byte2 |= SWFMRK_IMMED; if (setmark) scsi_cmd->byte2 |= SWFMRK_WSMK; scsi_ulto3b(num_marks, scsi_cmd->num_marks); cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); } /* * The reserve and release unit commands differ only by their opcodes. */ void scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), u_int8_t tag_action, int third_party, int third_party_id, u_int8_t sense_len, u_int32_t timeout, int reserve) { struct scsi_reserve_release_unit *scsi_cmd; scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; bzero(scsi_cmd, sizeof(*scsi_cmd)); if (reserve) scsi_cmd->opcode = RESERVE_UNIT; else scsi_cmd->opcode = RELEASE_UNIT; if (third_party) { scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; scsi_cmd->lun_thirdparty |= ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); } cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); } void scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), u_int8_t tag_action, int immediate, int long_erase, u_int8_t sense_len, u_int32_t timeout) { struct scsi_erase *scsi_cmd; scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; bzero(scsi_cmd, sizeof(*scsi_cmd)); scsi_cmd->opcode = ERASE; if (immediate) scsi_cmd->lun_imm_long |= SE_IMMED; if (long_erase) scsi_cmd->lun_imm_long |= SE_LONG; cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); } /* * Read Tape Position command. */ void scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), u_int8_t tag_action, int hardsoft, struct scsi_tape_position_data *sbp, u_int8_t sense_len, u_int32_t timeout) { struct scsi_tape_read_position *scmd; cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; bzero(scmd, sizeof(*scmd)); scmd->opcode = READ_POSITION; scmd->byte1 = hardsoft; } /* * Set Tape Position command. */ void scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, void (*cbfcnp)(struct cam_periph *, union ccb *), u_int8_t tag_action, int hardsoft, u_int32_t blkno, u_int8_t sense_len, u_int32_t timeout) { struct scsi_tape_locate *scmd; cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; bzero(scmd, sizeof(*scmd)); scmd->opcode = LOCATE; if (hardsoft) scmd->byte1 |= SA_SPOS_BT; scsi_ulto4b(blkno, scmd->blkaddr); }