/* * Implementation of SCSI Sequential Access Peripheral driver for CAM. * * Copyright (c) 1997 Justin T. Gibbs * 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. * * $Id: scsi_sa.c,v 1.19 1999/02/10 00:03:15 ken Exp $ */ #include #include #ifdef KERNEL #include #include #endif #include #include #include #include #include #include #include #include #ifndef KERNEL #include #include #endif #include #include #include #include #include #include #include #include #include #ifdef KERNEL #include #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 /* * Default to old FreeBSD behaviour of 2 filemarks * at EOD for all (except QIC) devices. */ #ifndef SA_2FM_AT_EOD #define SA_2FM_AT_EOD 1 #endif #ifndef UNUSED_PARAMETER #define UNUSED_PARAMETER(x) x = x #endif typedef enum { SA_STATE_NORMAL } sa_state; typedef enum { SA_CCB_BUFFER_IO, SA_CCB_WAITING } sa_ccb_types; #define ccb_type ppriv_field0 #define ccb_bp ppriv_ptr1 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_UNSUPP = 0x0800 } 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_quirks; struct sa_softc { sa_state state; sa_flags flags; sa_quirks quirks; struct buf_queue_head buf_queue; struct devstat device_stats; 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; /* * Relative to BOT Location. */ daddr_t fileno; daddr_t blkno; /* * Latched Error Info */ struct { struct scsi_sense_data _last_io_sense; u_int32_t _last_io_resid; u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; struct scsi_sense_data _last_ctl_sense; u_int32_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 : 31, 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, "ARCHIVE", "Python 25601*", "*"}, SA_QUIRK_NOCOMP, 0 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", "VIPER 2525*", "*"}, 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 }, { { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", " TDC 3600", "U07:"}, 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, "WANGTEK", "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 } }; static d_open_t saopen; static d_read_t saread; static d_write_t sawrite; 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 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, struct scsi_data_compression_page *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, dev_t); 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 }; DATA_SET(periphdriver_set, sadriver); /* units are bits 4-7, 16-21 (1024 units) */ #define SAUNIT(DEV) \ (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) #define SAMODE(z) ((minor(z) & 0x3)) #define SADENSITY(z) (((minor(z) >> 2) & 0x3)) #define SA_IS_CTRL(z) (minor(z) & (1 << 29)) /* For 2.2-stable support */ #ifndef D_TAPE #define D_TAPE 0 #endif #define SA_CDEV_MAJOR 14 #define SA_BDEV_MAJOR 5 static struct cdevsw sa_cdevsw = { /*d_open*/ saopen, /*d_close*/ saclose, /*d_read*/ saread, /*d_write*/ sawrite, /*d_ioctl*/ saioctl, /*d_stop*/ nostop, /*d_reset*/ noreset, /*d_devtotty*/ nodevtotty, /*d_poll*/ seltrue, /*d_mmap*/ nommap, /*d_strategy*/ sastrategy, /*d_name*/ "sa", /*d_spare*/ NULL, /*d_maj*/ -1, /*d_dump*/ nodump, /*d_psize*/ nopsize, /*d_flags*/ D_TAPE, /*d_maxio*/ 0, /*b_maj*/ -1 }; static struct extend_array *saperiphs; static int saopen(dev_t dev, int flags, int fmt, struct proc *p) { struct cam_periph *periph; struct sa_softc *softc; int unit; int mode; int density; int error; int s; unit = SAUNIT(dev); mode = SAMODE(dev); density = SADENSITY(dev); periph = cam_extend_get(saperiphs, unit); if (periph == NULL) return (ENXIO); softc = (struct sa_softc *)periph->softc; CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("saaopen: dev=0x%x (unit %d , mode %d, density %d)\n", dev, unit, mode, density)); s = splsoftcam(); if (SA_IS_CTRL(dev)) { softc->ctrl_mode = 1; (void) splx(s); return (0); } if (softc->flags & SA_FLAG_INVALID) { splx(s); return(ENXIO); } if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) { splx(s); return (error); /* error code from tsleep */ } splx(s); if ((softc->flags & SA_FLAG_OPEN) == 0) { if (cam_periph_acquire(periph) != CAM_REQ_CMP) return(ENXIO); if ((error = sareservereleaseunit(periph, TRUE)) != 0) { cam_periph_unlock(periph); cam_periph_release(periph); return(error); } } if (error == 0) { if ((softc->flags & SA_FLAG_OPEN) != 0) { error = EBUSY; } if (error == 0) error = samount(periph, flags, dev); /* Perform other checking... */ } if (error == 0) { saprevent(periph, PR_PREVENT); softc->flags |= SA_FLAG_OPEN; } cam_periph_unlock(periph); return (error); } static int saclose(dev_t dev, int flag, int fmt, struct proc *p) { struct cam_periph *periph; struct sa_softc *softc; int unit; int mode; int error; int closedbits = SA_FLAG_OPEN; unit = SAUNIT(dev); mode = SAMODE(dev); periph = cam_extend_get(saperiphs, unit); if (periph == NULL) return (ENXIO); softc = (struct sa_softc *)periph->softc; if (SA_IS_CTRL(dev)) { softc->ctrl_mode = 0; return (0); } if ((error = cam_periph_lock(periph, PRIBIO)) != 0) { return (error); /* error code from tsleep */ } /* * See whether or not we need to write filemarks... */ error = sacheckeod(periph); if (error) { xpt_print_path(periph->path); printf("failure at writing filemarks - opting for safety\n"); mode = SA_MODE_OFFLINE; } /* * Whatever we end up doing, allow users to eject tapes from here on. */ saprevent(periph, PR_ALLOW); /* * Decide how to end... */ switch (mode) { default: xpt_print_path(periph->path); printf("unknown close mode %x- opting for safety\n", mode); /* FALLTHROUGH */ case SA_MODE_OFFLINE: sarewind(periph); saloadunload(periph, FALSE); closedbits |= SA_FLAG_TAPE_MOUNTED; /* not mounted now */ break; case SA_MODE_REWIND: sarewind(periph); closedbits |= SA_FLAG_TAPE_MOUNTED; /* not mounted now */ 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 ((softc->quirks & SA_QUIRK_2FM) && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { error = saspace(periph, -1, SS_FILEMARKS); if (error) { xpt_print_path(periph->path); printf("unable to backspace over one of double" " filemarks at EOD- opting for safety\n"); sarewind(periph); saloadunload(periph, FALSE); closedbits |= SA_FLAG_TAPE_MOUNTED; } } 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; /* release the device */ sareservereleaseunit(periph, FALSE); cam_periph_unlock(periph); cam_periph_release(periph); return (0); } static int saread(dev_t dev, struct uio *uio, int ioflag) { if (SA_IS_CTRL(dev)) { return (EINVAL); } return(physio(sastrategy, NULL, dev, 1, minphys, uio)); } static int sawrite(dev_t dev, struct uio *uio, int ioflag) { if (SA_IS_CTRL(dev)) { return (EINVAL); } return(physio(sastrategy, NULL, dev, 0, minphys, uio)); } /* * 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 buf *bp) { struct cam_periph *periph; struct sa_softc *softc; u_int unit; int s; if (SA_IS_CTRL(bp->b_dev)) { bp->b_error = EINVAL; goto bad; } unit = SAUNIT(bp->b_dev); periph = cam_extend_get(saperiphs, unit); if (periph == NULL) { bp->b_error = ENXIO; goto bad; } softc = (struct sa_softc *)periph->softc; s = splsoftcam(); if (softc->flags & SA_FLAG_INVALID) { splx(s); bp->b_error = ENXIO; goto bad; } splx(s); /* * If it's a null transfer, return immediatly */ if (bp->b_bcount == 0) goto done; /* 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->b_bcount & softc->blk_mask) != 0)) || ((softc->blk_mask == ~0) && ((bp->b_bcount % softc->min_blk) != 0))) { xpt_print_path(periph->path); printf("Invalid request. Fixed block device " "requests must be a multiple " "of %d bytes\n", softc->min_blk); bp->b_error = EINVAL; goto bad; } } else if ((bp->b_bcount > softc->max_blk) || (bp->b_bcount < softc->min_blk) || (bp->b_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); bp->b_error = EINVAL; goto bad; } /* * Mask interrupts so that the device cannot be invalidated until * after we are in the queue. Otherwise, we might not properly * clean up one of the buffers. */ s = splbio(); /* * Place it at the end of the queue. */ bufq_insert_tail(&softc->buf_queue, bp); splx(s); /* * Schedule ourselves for performing the work. */ xpt_schedule(periph, 1); return; bad: bp->b_flags |= B_ERROR; done: /* * Correctly set the buf to indicate a completed xfer */ bp->b_resid = bp->b_bcount; biodone(bp); } static int saioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p) { struct cam_periph *periph; struct sa_softc *softc; int didlockperiph = 0; int s; int unit; int mode; int density; int error; unit = SAUNIT(dev); mode = SAMODE(dev); density = SADENSITY(dev); periph = cam_extend_get(saperiphs, unit); if (periph == NULL) return (ENXIO); 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 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. */ s = splsoftcam(); if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { error = cam_periph_lock(periph, PRIBIO|PCATCH); if (error != 0) { splx(s); return (error); } didlockperiph = 1; } break; case MTSETBSIZ: case MTSETDNSTY: case MTCOMP: /* * We need to acquire the peripheral here rather * than at open time because we are sharing writable * access to data structures. */ s = splsoftcam(); error = cam_periph_lock(periph, PRIBIO|PCATCH); if (error != 0) { splx(s); return (error); } didlockperiph = 1; break; default: return (EINVAL); } } /* * Find the device that the user is talking about */ switch (cmd) { case MTIOCGET: { struct mtget *g = (struct mtget *)arg; CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("saioctl: MTIOGET\n")); bzero(g, sizeof(struct mtget)); g->mt_type = MT_ISAR; g->mt_density = softc->media_density; g->mt_blksiz = softc->media_blksize; 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; g->mt_comp0 = MT_COMP_DISABLED; g->mt_comp1 = MT_COMP_DISABLED; g->mt_comp2 = MT_COMP_DISABLED; g->mt_comp3 = 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_density0 = softc->media_density; g->mt_density1 = softc->media_density; g->mt_density2 = softc->media_density; g->mt_density3 = softc->media_density; 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; 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 || didlockperiph) bzero((caddr_t) &softc->errinfo, sizeof (softc->errinfo)); error = 0; break; } case MTIOCTOP: { struct mtop *mt; int count; 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 */ 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; scsi_space_code spaceop = SS_FILEMARKS; nmarks = softc->filemarks; error = sacheckeod(periph); if (error) { xpt_print_path(periph->path); printf("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; softc->filemarks = 0; break; } case MTREW: /* rewind */ (void) sacheckeod(periph); error = sarewind(periph); /* see above */ softc->flags &= ~SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_MOUNTED; softc->filemarks = 0; break; case MTERASE: /* erase */ error = saerase(periph, count); break; case MTRETENS: /* re-tension tape */ error = saretension(periph); break; case MTOFFL: /* rewind and put the drive offline */ (void) sacheckeod(periph); /* see above */ softc->flags &= ~SA_FLAG_TAPE_WRITTEN; softc->filemarks = 0; /* * Be sure to allow media removal before * attempting the eject. */ saprevent(periph, PR_ALLOW); error = sarewind(periph); if (error == 0) error = saloadunload(periph, FALSE); else break; softc->flags &= ~SA_FLAG_TAPE_LOCKED; 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 */ 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 */ if (count > UCHAR_MAX) { error = EINVAL; break; } else { error = sasetparams(periph, SA_PARAM_DENSITY, 0, count, 0, 0); } break; case MTCOMP: /* enable compression */ /* * 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, 0); break; default: error = EINVAL; } break; } case MTIOCIEOT: case MTIOCEEOT: error = 0; break; case MTIOCRDSPOS: error = sardpos(periph, 0, (u_int32_t *) arg); break; case MTIOCRDHPOS: error = sardpos(periph, 1, (u_int32_t *) arg); break; case MTIOCSLOCATE: error = sasetpos(periph, 0, (u_int32_t *) arg); break; case MTIOCHLOCATE: error = sasetpos(periph, 1, (u_int32_t *) arg); break; default: error = cam_periph_ioctl(periph, cmd, arg, saerror); break; } if (didlockperiph) { cam_periph_unlock(periph); } return (error); } static void sainit(void) { cam_status status; struct cam_path *path; /* * Create our extend array for storing the devices we attach to. */ saperiphs = cam_extend_new(); if (saperiphs == NULL) { printf("sa: Failed to alloc extend array!\n"); return; } /* * Install a global async callback. */ status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID, CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); if (status == CAM_REQ_CMP) { /* Register the async callbacks of interrest */ struct ccb_setasync csa; /* * This is an immediate CCB, * so using the stack is OK */ xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5); csa.ccb_h.func_code = XPT_SASYNC_CB; csa.event_enable = AC_FOUND_DEVICE; csa.callback = saasync; csa.callback_arg = NULL; xpt_action((union ccb *)&csa); status = csa.ccb_h.status; xpt_free_path(path); } if (status != CAM_REQ_CMP) { printf("sa: Failed to attach master async callback " "due to status 0x%x!\n", status); } else { /* If we were successfull, register our devsw */ cdevsw_add_generic(SA_BDEV_MAJOR, SA_CDEV_MAJOR, &sa_cdevsw); } } static void saoninvalidate(struct cam_periph *periph) { struct sa_softc *softc; struct buf *q_bp; struct ccb_setasync csa; int s; softc = (struct sa_softc *)periph->softc; /* * De-register any async callbacks. */ xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); csa.ccb_h.func_code = XPT_SASYNC_CB; csa.event_enable = 0; csa.callback = saasync; csa.callback_arg = periph; xpt_action((union ccb *)&csa); softc->flags |= SA_FLAG_INVALID; /* * Although the oninvalidate() routines are always called at * splsoftcam, we need to be at splbio() here to keep the buffer * queue from being modified while we traverse it. */ s = splbio(); /* * Return all queued I/O with ENXIO. * XXX Handle any transactions queued to the card * with XPT_ABORT_CCB. */ while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){ bufq_remove(&softc->buf_queue, q_bp); q_bp->b_resid = q_bp->b_bcount; q_bp->b_error = ENXIO; q_bp->b_flags |= B_ERROR; biodone(q_bp); } splx(s); xpt_print_path(periph->path); printf("lost device\n"); } static void sacleanup(struct cam_periph *periph) { struct sa_softc *softc; softc = (struct sa_softc *)periph->softc; devstat_remove_entry(&softc->device_stats); cam_extend_release(saperiphs, periph->unit_number); xpt_print_path(periph->path); printf("removing device entry\n"); free(softc, M_DEVBUF); } 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->pd_type != 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; } case AC_LOST_DEVICE: cam_periph_invalidate(periph); break; case AC_TRANSFER_NEG: case AC_SENT_BDR: case AC_SCSI_AEN: case AC_UNSOL_RESEL: case AC_BUS_RESET: default: break; } } static cam_status saregister(struct cam_periph *periph, void *arg) { struct sa_softc *softc; struct ccb_setasync csa; struct ccb_getdev *cgd; caddr_t match; 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_DEVBUF,M_NOWAIT); if (softc == NULL) { printf("saregister: Unable to probe new device. " "Unable to allocate softc\n"); return(CAM_REQ_CMP_ERR); } bzero(softc, sizeof(*softc)); softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); softc->state = SA_STATE_NORMAL; softc->fileno = (daddr_t) -1; softc->blkno = (daddr_t) -1; bufq_init(&softc->buf_queue); periph->softc = softc; cam_extend_set(saperiphs, periph->unit_number, periph); /* * 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; #ifdef CAMDEBUG xpt_print_path(periph->path); printf("found quirk entry %d\n", (int) (((struct sa_quirk_entry *) match) - sa_quirk_table)); #endif } else softc->quirks = SA_QUIRK_NONE; /* * The SA driver supports a blocksize, but we don't know the * blocksize until we sense the media. So, set a flag to * indicate that the blocksize is unavailable right now. * We'll clear the flag as soon as we've done a read capacity. */ devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0, DEVSTAT_BS_UNAVAILABLE, cgd->pd_type | DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_SA); /* * Add an async callback so that we get * notified if this device goes away. */ xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); csa.ccb_h.func_code = XPT_SASYNC_CB; csa.event_enable = AC_LOST_DEVICE; csa.callback = saasync; csa.callback_arg = periph; xpt_action((union ccb *)&csa); 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_INFO, ("sastart")); switch (softc->state) { case SA_STATE_NORMAL: { /* Pull a buffer from the queue and get going on it */ struct buf *bp; int s; /* * See if there is a buf with work for us to do.. */ s = splbio(); bp = bufq_first(&softc->buf_queue); if (periph->immediate_priority <= periph->pinfo.priority) { CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, ("queuing for immediate ccb\n")); start_ccb->ccb_h.ccb_type = SA_CCB_WAITING; SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, periph_links.sle); periph->immediate_priority = CAM_PRIORITY_NONE; splx(s); wakeup(&periph->ccb_list); } else if (bp == NULL) { splx(s); xpt_release_ccb(start_ccb); } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { struct buf *done_bp; bufq_remove(&softc->buf_queue, bp); bp->b_resid = bp->b_bcount; bp->b_flags |= B_ERROR; if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { if ((bp->b_flags & B_READ) == 0) bp->b_error = ENOSPC; else bp->b_error = EIO; } if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { bp->b_error = EIO; } if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { bp->b_error = EIO; } done_bp = bp; bp = bufq_first(&softc->buf_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- coping with pending error %x, %smore " "buffers queued up\n", (softc->flags & SA_FLAG_ERR_PENDING), (bp == NULL)? "no " : " ")); splx(s); xpt_release_ccb(start_ccb); biodone(done_bp); } else { u_int32_t length; bufq_remove(&softc->buf_queue, bp); if ((softc->flags & SA_FLAG_FIXED) != 0) { if (softc->blk_shift != 0) { length = bp->b_bcount >> softc->blk_shift; } else if (softc->media_blksize != 0) { length = bp->b_bcount / softc->media_blksize; } else { bp->b_error = EIO; xpt_print_path(periph->path); printf("zero blocksize for " "FIXED length writes?\n"); splx(s); biodone(bp); break; } CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Fixed Record Count is %d\n", length)); } else { length = bp->b_bcount; CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, ("Variable Record Count is %d\n", length)); } devstat_start_transaction(&softc->device_stats); /* * 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->b_flags & B_READ)? MTIO_DSREG_RD : MTIO_DSREG_WR; scsi_sa_read_write(&start_ccb->csio, /* No Retries */0, sadone, MSG_SIMPLE_Q_TAG, bp->b_flags & B_READ, /*SILI*/FALSE, softc->flags & SA_FLAG_FIXED, length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE, 120 * 60 * 1000); /* 2min */ start_ccb->ccb_h.ccb_type = SA_CCB_BUFFER_IO; start_ccb->ccb_h.ccb_bp = bp; bp = bufq_first(&softc->buf_queue); splx(s); xpt_action(start_ccb); } if (bp != NULL) { /* Have more work to do, so ensure we stay scheduled */ xpt_schedule(periph, /* XXX priority */1); } 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 (csio->ccb_h.ccb_type) { case SA_CCB_BUFFER_IO: { struct buf *bp; int error; softc->dsreg = MTIO_DSREG_REST; bp = (struct buf *)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) { int s; struct buf *q_bp; /* * Catastrophic error. Mark the tape as not mounted. * 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. * */ s = splbio(); softc->flags &= ~SA_FLAG_TAPE_MOUNTED; while ((q_bp = bufq_first(&softc->buf_queue)) != NULL) { bufq_remove(&softc->buf_queue, q_bp); q_bp->b_resid = q_bp->b_bcount; q_bp->b_error = EIO; q_bp->b_flags |= B_ERROR; biodone(q_bp); } splx(s); } if (error != 0) { bp->b_resid = bp->b_bcount; bp->b_error = error; bp->b_flags |= B_ERROR; cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); /* * In the error case, position is updated in saerror. */ } else { bp->b_resid = csio->resid; bp->b_error = 0; if (csio->resid != 0) { bp->b_flags |= B_ERROR; } if ((bp->b_flags & B_READ) == 0) { softc->flags |= SA_FLAG_TAPE_WRITTEN; softc->filemarks = 0; } if (softc->blkno != (daddr_t) -1) { if ((softc->flags & SA_FLAG_FIXED) != 0) { u_int32_t l; if (softc->blk_shift != 0) { l = bp->b_bcount >> softc->blk_shift; } else { l = bp->b_bcount / softc->media_blksize; } softc->blkno += (daddr_t) l; } else { softc->blkno++; } } } #ifdef CAMDEBUG if (error || bp->b_resid) { CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("error %d resid %ld count %ld\n", error, bp->b_resid, bp->b_bcount)); } #endif devstat_end_transaction(&softc->device_stats, bp->b_bcount - bp->b_resid, done_ccb->csio.tag_action & 0xf, (bp->b_flags & B_READ) ? DEVSTAT_READ : DEVSTAT_WRITE); biodone(bp); 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, dev_t dev) { struct sa_softc *softc; union ccb *ccb; struct ccb_scsiio *csio; 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; ccb = cam_periph_getccb(periph, 1); csio = &ccb->csio; error = 0; /* * Determine if something has happend since the last * open/mount that would invalidate a mount. This * will also eat any pending UAs. */ scsi_test_unit_ready(csio, 1, sadone, MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 5000); cam_periph_runccb(ccb, NULL, 0, 0, &softc->device_stats); if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); softc->flags &= ~SA_FLAG_TAPE_MOUNTED; } 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_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, 60000); error = cam_periph_runccb(ccb, saerror, 0, SF_QUIET_IR, &softc->device_stats); if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); /* * In case this doesn't work, do a REWIND instead */ if (error) { scsi_rewind(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, SSD_FULL_SIZE, (SA_REWIND_TIMEOUT) * 60 * 1000); error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); } if (error) { xpt_release_ccb(ccb); goto exit; } /* * Next off, determine block limits. */ rblim = (struct scsi_read_block_limits_data *) malloc(sizeof(*rblim), M_TEMP, M_WAITOK); /* it is safe to retry this */ scsi_read_block_limits(csio, 5, sadone, MSG_SIMPLE_Q_TAG, rblim, SSD_FULL_SIZE, 5000); error = cam_periph_runccb(ccb, saerror, 0, 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_3) { 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_3080, SCSI_DENSITY_QIC_1320, 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, 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_FIXED|SA_QUIRK_1FM; softc->last_media_blksize = 512; 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_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_path(ccb->ccb_h.path); printf("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->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_path(ccb->ccb_h.path); printf("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_path(ccb->ccb_h.path); printf("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_ENABLED; } else softc->flags |= SA_FLAG_COMP_UNSUPP; if (softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) { error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 0, 0, SF_NO_PRINT); if (error == 0) softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; } if (error == 0) { softc->flags |= SA_FLAG_TAPE_MOUNTED; } exit: if (rblim != NULL) free(rblim, M_TEMP); if (error != 0) { cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); softc->dsreg = MTIO_DSREG_NIL; } else { softc->fileno = softc->blkno = 0; softc->dsreg = MTIO_DSREG_REST; } #if SA_2FM_AT_EOD == 1 if ((softc->quirks & SA_QUIRK_1FM) == 0) softc->quirks |= SA_QUIRK_2FM; #endif } else xpt_release_ccb(ccb); return (error); } static int sacheckeod(struct cam_periph *periph) { int error; 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|SA_QUIRK_1FM)) == SA_QUIRK_2FM) markswanted++; } if (softc->filemarks < markswanted) { markswanted -= softc->filemarks; error = sawritefilemarks(periph, markswanted, FALSE); } else { error = 0; } return (error); } static int saerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) { struct cam_periph *periph; struct sa_softc *softc; struct ccb_scsiio *csio; struct scsi_sense_data *sense; u_int32_t info, resid; int error_code, sense_key, asc, ascq; int error; periph = xpt_path_periph(ccb->ccb_h.path); softc = (struct sa_softc *)periph->softc; csio = &ccb->csio; sense = &csio->sense_data; scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); error = 0; if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR) { if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { info = scsi_4btoul(sense->info); resid = info; 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 (csio->ccb_h.ccb_type == 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; } 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; } } if (((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR) && ((sense->flags & (SSD_EOM|SSD_FILEMARK|SSD_ILI)) != 0) && ((sense_key == SSD_KEY_NO_SENSE) || (sense_key == SSD_KEY_BLANK_CHECK))) { int defer_action; CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Key 0x%x ASC/ASCQ 0x%x 0x%x flags 0x%x resid %d " "dxfer_len %d\n", sense_key, asc, ascq, sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); if (resid > 0 && resid < csio->dxfer_len && (softc->flags & SA_FLAG_FIXED) != 0) defer_action = TRUE; else defer_action = FALSE; if ((sense->flags & SSD_EOM) != 0 || (sense_key == 0x8 /* BLANK CHECK*/)) { csio->resid = resid; if (defer_action) { softc->flags |= SA_FLAG_EOM_PENDING; } else { if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) error = ENOSPC; else error = EIO; } } if ((sense->flags & SSD_FILEMARK) != 0) { csio->resid = resid; if (defer_action) softc->flags |= SA_FLAG_EOF_PENDING; if (softc->fileno != (daddr_t) -1) { softc->fileno++; softc->blkno = 0; } } if (sense->flags & SSD_ILI) { if (info < 0) { /* * The record was too big. */ xpt_print_path(csio->ccb_h.path); printf("%d-byte tape record bigger " "than suplied read buffer\n", csio->dxfer_len - info); csio->resid = csio->dxfer_len; error = EIO; } else { csio->resid = resid; if ((softc->flags & SA_FLAG_FIXED) != 0) { if (defer_action) softc->flags |= SA_FLAG_EIO_PENDING; else error = EIO; } else if ((sense->flags & SSD_FILEMARK) == 0) { if (softc->blkno != (daddr_t) -1) { softc->blkno++; } } } } } if (error == 0) error = cam_periph_error(ccb, cam_flags, sense_flags, &softc->saved_ccb); 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, struct scsi_data_compression_page *comp_page) { union ccb *ccb; void *mode_buffer; struct scsi_mode_header_6 *mode_hdr; struct scsi_mode_blk_desc *mode_blk; struct scsi_data_compression_page *ncomp_page; int mode_buffer_len; struct sa_softc *softc; int error; cam_status status; softc = (struct sa_softc *)periph->softc; ccb = cam_periph_getccb(periph, /*priority*/ 1); 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(struct scsi_data_compression_page); } mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK); bzero(mode_buffer, mode_buffer_len); mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; if (params_to_get & SA_PARAM_COMPRESSION) ncomp_page = (struct scsi_data_compression_page *)&mode_blk[1]; else ncomp_page = NULL; /* 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) ? SA_DATA_COMPRESSION_PAGE : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 5000); error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, &softc->device_stats); if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); status = ccb->ccb_h.status & CAM_STATUS_MASK; if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { /* * Most likely doesn't support the compression * page. Remember this for the future and attempt * the request without asking for compression info. */ softc->quirks |= SA_QUIRK_NOCOMP; free(mode_buffer, M_TEMP); goto retry; } else if (error == 0) { struct scsi_data_compression_page *temp_comp_page; temp_comp_page = NULL; /* * 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)) != 0)) { /* * 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(*ncomp_page); /* * Now move the compression page that we presumably * got back down the memory chunk a little bit so * it doesn't get spammed. */ temp_comp_page = (struct scsi_data_compression_page *)&mode_hdr[1]; bcopy(temp_comp_page, ncomp_page, sizeof(*ncomp_page)); /* * Now, we issue another mode sense and just ask * for the block descriptor, etc. */ scsi_mode_sense(&ccb->csio, /*retries*/ 1, /*cbfcnp*/ sadone, /*tag_action*/ MSG_SIMPLE_Q_TAG, /*dbd*/ FALSE, /*page_code*/ SMS_PAGE_CTRL_CURRENT, /*page*/ SMS_VENDOR_SPECIFIC_PAGE, /*param_buf*/ mode_buffer, /*param_len*/ mode_buffer_len, /*sense_len*/ SSD_FULL_SIZE, /*timeout*/ 5000); error = cam_periph_runccb(ccb, saerror, /*cam_flags*/ 0, /*sense_flags*/ 0, &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) { *comp_supported =(ncomp_page->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; *comp_enabled = (ncomp_page->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; *comp_algorithm = scsi_4btoul(ncomp_page->comp_algorithm); if (comp_page != NULL) bcopy(ncomp_page, comp_page,sizeof(*comp_page)); } 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"); } } else if (status == CAM_SCSI_STATUS_ERROR) { /* Tell the user about the fatal error. */ scsi_sense_print(&ccb->csio); } sagetparamsexit: xpt_release_ccb(ccb); free(mode_buffer, M_TEMP); 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 comp_algorithm, u_int32_t sense_flags) { struct sa_softc *softc; u_int32_t current_blocksize; u_int32_t current_comp_algorithm; 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; struct scsi_data_compression_page *comp_page; struct scsi_data_compression_page *current_comp_page; int buff_mode; union ccb *ccb; int error; softc = (struct sa_softc *)periph->softc; /* silence the compiler */ ccb = NULL; current_comp_page = malloc(sizeof(*current_comp_page),M_TEMP, M_WAITOK); /* * 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_comp_algorithm, current_comp_page); if (error != 0) { free(current_comp_page, M_TEMP); return(error); } mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); if (params_to_set & SA_PARAM_COMPRESSION) mode_buffer_len += sizeof(struct scsi_data_compression_page); mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK); bzero(mode_buffer, mode_buffer_len); mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; if (params_to_set & SA_PARAM_COMPRESSION) { comp_page = (struct scsi_data_compression_page *)&mode_blk[1]; bcopy(current_comp_page, comp_page, sizeof(*comp_page)); } else comp_page = 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 (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; /* set single-initiator buffering mode */ mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); /* * 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) && (current_comp_page->dce_and_dcc & SA_DCP_DCC)) { /* * 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. */ if (comp_algorithm == 0) { /* disable compression */ comp_page->dce_and_dcc &= ~SA_DCP_DCE; } else { /* enable compression */ comp_page->dce_and_dcc |= SA_DCP_DCE; /* enable decompression */ comp_page->dde_and_red |= SA_DCP_DDE; if (comp_algorithm != MT_COMP_ENABLE) { /* set the compression algorithm */ scsi_ulto4b(comp_algorithm, comp_page->comp_algorithm); } else if ((scsi_4btoul(comp_page->comp_algorithm) == 0) && (softc->saved_comp_algorithm != 0)) { scsi_ulto4b(softc->saved_comp_algorithm, comp_page->comp_algorithm); } } } else if (params_to_set & SA_PARAM_COMPRESSION) { /* * The drive doesn't support compression, so turn off the * set compression bit. */ params_to_set &= ~SA_PARAM_COMPRESSION; /* * Should probably do something other than a printf...like * set a flag in the softc saying that this drive doesn't * support compression. */ xpt_print_path(periph->path); printf("sasetparams: device does not 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_TEMP); 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(*comp_page); } ccb = cam_periph_getccb(periph, /*priority*/ 1); scsi_mode_select(&ccb->csio, /*retries*/1, /*cbfcnp*/ sadone, /*tag_action*/ MSG_SIMPLE_Q_TAG, /*scsi_page_fmt*/(params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, /*save_pages*/ FALSE, /*param_buf*/ mode_buffer, /*param_len*/ mode_buffer_len, /*sense_len*/ SSD_FULL_SIZE, /*timeout*/ 5000); error = cam_periph_runccb(ccb, saerror, /*cam_flags*/ 0, sense_flags, &softc->device_stats); if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO) || params_to_set == SA_PARAM_BUFF_MODE) { 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 == 0) { xpt_release_ccb(ccb); } else { if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); /* * 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(current_comp_page, comp_page, sizeof(struct scsi_data_compression_page)); /* * 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, 0, &softc->device_stats); if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); xpt_release_ccb(ccb); } if (current_comp_page != NULL) free(current_comp_page, M_TEMP); if (params_to_set & SA_PARAM_COMPRESSION) { if (error) { softc->flags &= ~SA_FLAG_COMP_ENABLED; softc->saved_comp_algorithm = softc->comp_algorithm; softc->comp_algorithm = 0; } else { softc->flags |= SA_FLAG_COMP_ENABLED; softc->comp_algorithm = comp_algorithm; } } free(mode_buffer, M_TEMP); 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; 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, 60000); /* * We can be quiet about illegal requests. */ error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats); if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 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, /*priority*/1); /* It is safe to retry this operation */ scsi_rewind(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, SSD_FULL_SIZE, (SA_REWIND_TIMEOUT) * 60 * 1000); softc->dsreg = MTIO_DSREG_REW; error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); softc->dsreg = MTIO_DSREG_REST; if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 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, /*priority*/1); /* This cannot be retried */ scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, SSD_FULL_SIZE, (SA_SPACE_TIMEOUT) * 60 * 1000); 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; if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 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. * * We are not managing residuals here (really). */ 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->blkno = 0; } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { softc->blkno += count; } return (error); } static int sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) { union ccb *ccb; struct sa_softc *softc; int error; softc = (struct sa_softc *)periph->softc; ccb = cam_periph_getccb(periph, /*priority*/1); 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, 60000); softc->dsreg = MTIO_DSREG_REST; error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); /* * XXXX: Get back the actual number of filemarks written * XXXX: (there can be a residual). */ if (error == 0 && nmarks) { struct sa_softc *softc = (struct sa_softc *)periph->softc; softc->filemarks += nmarks; } 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 += nmarks; 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; int error; /* * First flush any pending writes... */ error = sawritefilemarks(periph, 0, 0); /* * The latter case is for 'write protected' tapes * which are too stupid to recognize a zero count * for writing filemarks as a no-op. */ if (error != 0 && error != EACCES) return (error); softc = (struct sa_softc *)periph->softc; ccb = cam_periph_getccb(periph, /*priority*/1); scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, hard, &loc, SSD_FULL_SIZE, 5000); softc->dsreg = MTIO_DSREG_RBSY; error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); softc->dsreg = MTIO_DSREG_REST; if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 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; /* * First flush any pending writes... */ error = sawritefilemarks(periph, 0, 0); /* * The latter case is for 'write protected' tapes * which are too stupid to recognize a zero count * for writing filemarks as a no-op. */ if (error != 0 && error != EACCES) return (error); softc = (struct sa_softc *)periph->softc; ccb = cam_periph_getccb(periph, /*priority*/1); scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, hard, *blkptr, SSD_FULL_SIZE, 60 * 60 * 1000); softc->dsreg = MTIO_DSREG_POS; error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); softc->dsreg = MTIO_DSREG_REST; if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); xpt_release_ccb(ccb); /* * Note relative file && block number position now unknown (if * these things ever start being maintained in this driver). * * Do this for any kind of error (to be safe). */ 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, /*priority*/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, (SA_ERASE_TIMEOUT) * 60 * 1000); softc->dsreg = MTIO_DSREG_TEN; error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); softc->dsreg = MTIO_DSREG_REST; if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 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, sflag; softc = (struct sa_softc *)periph->softc; /* * We set SF_RETRY_UA, since this is often the first command run * when a tape device is opened, and there may be a unit attention * condition pending. */ if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) sflag = SF_RETRY_UA; else sflag = SF_RETRY_UA|SF_QUIET_IR; ccb = cam_periph_getccb(periph, 1); /* It is safe to retry this operation */ scsi_reserve_release_unit(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 0, SSD_FULL_SIZE, 5000, reserve); softc->dsreg = MTIO_DSREG_RBSY; error = cam_periph_runccb(ccb, saerror, 0, sflag, &softc->device_stats); softc->dsreg = MTIO_DSREG_REST; if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 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, /*priority*/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, 60000); 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; if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 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; ccb = cam_periph_getccb(periph, /*priority*/ 1); scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, SSD_FULL_SIZE, (SA_ERASE_TIMEOUT) * 60 * 1000); softc->dsreg = MTIO_DSREG_ZER; error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); softc->dsreg = MTIO_DSREG_REST; if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 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, /*flags*/CAM_DIR_IN, tag_action, /*data_ptr*/(u_int8_t *)rlimit_buf, /*dxfer_len*/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, /*flags*/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, /*flags*/CAM_DIR_NONE, tag_action, /*data_ptr*/NULL, /*dxfer_len*/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, /*flags*/CAM_DIR_NONE, tag_action, /*data_ptr*/NULL, /*dxfer_len*/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, /*flags*/CAM_DIR_NONE, tag_action, /*data_ptr*/NULL, /*dxfer_len*/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, /*flags*/CAM_DIR_NONE, tag_action, /*data_ptr*/NULL, /*dxfer_len*/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, /*flags*/ CAM_DIR_NONE, tag_action, /*data_ptr*/ NULL, /*dxfer_len*/ 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, /*flags*/ CAM_DIR_NONE, tag_action, /*data_ptr*/ NULL, /*dxfer_len*/ 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); }