diff options
Diffstat (limited to 'sys/cam/scsi/scsi_sa.c')
| -rw-r--r-- | sys/cam/scsi/scsi_sa.c | 2337 |
1 files changed, 2337 insertions, 0 deletions
diff --git a/sys/cam/scsi/scsi_sa.c b/sys/cam/scsi/scsi_sa.c new file mode 100644 index 0000000..b91b594 --- /dev/null +++ b/sys/cam/scsi/scsi_sa.c @@ -0,0 +1,2337 @@ +/* + * 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. + * + * $Id$ + */ + +#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/buf.h> +#include <sys/malloc.h> +#include <sys/mtio.h> +#include <sys/conf.h> +#include <sys/buf.h> +#include <sys/devicestat.h> +#include <machine/limits.h> + +#ifndef KERNEL +#include <stdio.h> +#include <string.h> +#endif + +#include <cam/cam.h> +#include <cam/cam_ccb.h> +#include <cam/cam_extend.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 + +#define SAUNIT(DEV) ((minor(DEV)&0xF0) >> 4) /* 4 bit unit. */ +#define SASETUNIT(DEV, U) makedev(major(DEV), ((U) << 4)) + +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_2FM_AT_EOD = 0x0040, + SA_FLAG_EOM_PENDING = 0x0080, + SA_FLAG_EIO_PENDING = 0x0100, + SA_FLAG_EOF_PENDING = 0x0200, + SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| + SA_FLAG_EOF_PENDING), + SA_FLAG_INVALID = 0x0400, + SA_FLAG_COMP_ENABLED = 0x0800, + SA_FLAG_COMP_UNSUPP = 0x1000 +} 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 +} 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_int8_t media_density; + u_int32_t media_blksize; + u_int32_t media_numblks; + u_int32_t comp_algorithm; + u_int32_t saved_comp_algorithm; + u_int8_t speed; + int buffer_mode; + int filemarks; + union ccb saved_ccb; +}; + +struct sa_quirk_entry { + struct scsi_inquiry_pattern inq_pat; + sa_quirks quirks; +}; + +static struct sa_quirk_entry sa_quirk_table[] = +{ + { + { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", + "Python 25601*", "*"}, /*quirks*/SA_QUIRK_NOCOMP + } +}; + +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_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); +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 *periph); +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 struct periph_driver sadriver = +{ + sainit, "sa", + TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 +}; + +DATA_SET(periphdriver_set, sadriver); + +#define SAUNIT(DEV) ((minor(DEV)&0xF0) >> 4) /* 4 bit unit. */ +#define SASETUNIT(DEV, U) makedev(major(DEV), ((U) << 4)) + +#define SAMODE(z) ((minor(z) & 0x03)) +#define SADENSITY(z) (((minor(z) >> 2) & 0x03)) + +/* For 2.2-stable support */ +#ifndef D_TAPE +#define D_TAPE 0 +#endif + +#define CTLMODE 3 +#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; + + 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)); + + if (softc->flags & SA_FLAG_INVALID) + return(ENXIO); + + if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) { + return (error); /* error code from tsleep */ + } + + 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); + } + /* 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; + + unit = SAUNIT(dev); + mode = SAMODE(dev); + periph = cam_extend_get(saperiphs, unit); + if (periph == NULL) + return (ENXIO); + + softc = (struct sa_softc *)periph->softc; + + if ((error = cam_periph_lock(periph, PRIBIO)) != 0) { + return (error); /* error code from tsleep */ + } + + sacheckeod(periph); + + saprevent(periph, PR_ALLOW); + + switch (mode) { + case SA_MODE_REWIND: + sarewind(periph); + break; + case SA_MODE_OFFLINE: + sarewind(periph); + saloadunload(periph, /*load*/FALSE); + break; + case SA_MODE_NOREWIND: + default: + break; + } + + softc->flags &= ~SA_FLAG_OPEN; + + /* 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) +{ + return(physio(sastrategy, NULL, dev, 1, minphys, uio)); +} + +static int +sawrite(dev_t dev, struct uio *uio, int ioflag) +{ + 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; + + 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; + + /* + * 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 pack 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 in the queue of disk activities for this disk + */ + bufq_insert_tail(&softc->buf_queue, bp); + + splx(s); + + /* + * Schedule ourselves for performing the work. + */ + xpt_schedule(periph, /* XXX priority */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 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; + + /* + * 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 = 0x7; /* Ultrix compat *//*? */ + 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; + 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 record */ + error = sawritefilemarks(periph, count, + /*setmarks*/FALSE); + break; + case MTBSR: /* backward space record */ + case MTFSR: /* forward space record */ + case MTBSF: /* backward space file */ + case MTFSF: /* forward space file */ + case MTEOD: /* space to end of recorded medium */ + { + int nmarks; + scsi_space_code spaceop; + + nmarks = softc->filemarks; + error = sacheckeod(periph); + nmarks -= softc->filemarks; + + if ((mt->mt_op == MTBSR) || (mt->mt_op == MTBSF)) + count = -count; + + if ((mt->mt_op == MTBSF) || (mt->mt_op == MTFSF)) + spaceop = SS_FILEMARKS; + else if ((mt->mt_op == MTBSR) || (mt->mt_op == MTFSR)) + spaceop = SS_BLOCKS; + else { + spaceop = SS_EOD; + count = 0; + nmarks = 0; + } + + nmarks = softc->filemarks; + error = sacheckeod(periph); + nmarks -= softc->filemarks; + if (error == 0) + error = saspace(periph, count - nmarks, + spaceop); + break; + } + case MTREW: /* rewind */ + error = sarewind(periph); + 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 */ + /* + * Be sure to allow media removal before + * attempting the eject. + */ + saprevent(periph, PR_ALLOW); + error = sarewind(periph); + + if (error == 0) + error = saloadunload(periph, /*load*/FALSE); + else + break; + + /* XXX KDM */ + 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); + 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); + } + 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); + break; + default: + error = EINVAL; + } + break; + } + case MTIOCIEOT: + case MTIOCEEOT: + error = 0; + break; + default: + error = cam_periph_ioctl(periph, cmd, arg, saerror); + break; + } + 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 +sacleanup(struct cam_periph *periph) +{ + cam_extend_release(saperiphs, periph->unit_number); + xpt_print_path(periph->path); + printf("removing device entry\n"); + free(periph->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, 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: + { + int s; + struct sa_softc *softc; + struct buf *q_bp; + struct ccb_setasync csa; + + softc = (struct sa_softc *)periph->softc; + + /* + * Insure that no other async callbacks that + * might affect this peripheral can come through. + */ + s = splcam(); + + /* + * 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; + + /* + * 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); + } + devstat_remove_entry(&softc->device_stats); + + xpt_print_path(periph->path); + printf("lost device\n"); + + splx(s); + + cam_periph_invalidate(periph); + } + 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) +{ + int s; + 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->state = SA_STATE_NORMAL; + 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; + 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); + + /* + * 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; + + + 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) { + + 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; + } + if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { + bp->b_error = EIO; + } + softc->flags &= ~SA_FLAG_ERR_PENDING; + bp = bufq_first(&softc->buf_queue); + splx(s); + biodone(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 { + length = + bp->b_bcount / softc->min_blk; + } + } else { + length = bp->b_bcount; + } + + devstat_start_transaction(&softc->device_stats); + + /* + * XXX - Perhaps 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. + */ + scsi_sa_read_write(&start_ccb->csio, + /*retries*/4, + 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; + + 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 scheuled, so + * just return. + */ + return; + } + } + + if (error == EIO) { + int s; + struct buf *q_bp; + + /* + * Catastrophic error. Mark our pack as invalid, + * 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, + /*relsim_flags*/0, + /*reduction*/0, + /*timeout*/0, + /*getcount_only*/0); + } 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; + } + } + + 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); +} + +static int +samount(struct cam_periph *periph) +{ + struct sa_softc *softc; + union ccb *ccb; + struct ccb_scsiio *csio; + int error; + + softc = (struct sa_softc *)periph->softc; + ccb = cam_periph_getccb(periph, /* priority */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, + /*retries*/1, + sadone, + MSG_SIMPLE_Q_TAG, + SSD_FULL_SIZE, + /*timeout*/5000); + + cam_periph_runccb(ccb, /*error handler*/NULL, /*cam_flags*/0, + /*sense_flags*/0, &softc->device_stats); + + if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { + cam_release_devq(ccb->ccb_h.path, + /*relsim_flags*/0, + /*reduction*/0, + /*timeout*/0, + /*getcount_only*/0); + softc->flags &= ~SA_FLAG_TAPE_MOUNTED; + } + + if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { + struct scsi_read_block_limits_data *rblim; + int buff_mode, comp_enabled, comp_supported; + u_int8_t write_protect; + + /* + * 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; + + /* + * First off, determine block limits. + */ + rblim = (struct scsi_read_block_limits_data *) + malloc(sizeof(*rblim), M_TEMP, M_WAITOK); + + scsi_read_block_limits(csio, + /*retries*/1, + sadone, + MSG_SIMPLE_Q_TAG, + rblim, + SSD_FULL_SIZE, + /*timeout*/5000); + + error = cam_periph_runccb(ccb, saerror, /*cam_flags*/0, + /*sense_flags*/SF_RETRY_UA, + &softc->device_stats); + + xpt_release_ccb(ccb); + + if (error != 0) + goto exit; + + softc->blk_gran = RBL_GRAN(rblim); + softc->max_blk = scsi_3btoul(rblim->maximum); + softc->min_blk = scsi_2btoul(rblim->minimum); + if (softc->max_blk == softc->min_blk) { + softc->flags |= SA_FLAG_FIXED; + if (powerof2(softc->min_blk)) { + softc->blk_mask = softc->min_blk - 1; + softc->blk_shift = 0; + softc->blk_shift = ffs(softc->min_blk) - 1; + } else { + softc->blk_mask = ~0; + softc->blk_shift = 0; + } + } else { + /* + * SCSI-III spec allows 0 + * to mean "unspecified" + */ + 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; + } + } + + /* + * 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) + goto exit; + + if (write_protect) + softc->flags |= SA_FLAG_TAPE_WP; + + if (comp_supported) { + if (comp_enabled) { + softc->flags |= SA_FLAG_COMP_ENABLED; + + if (softc->saved_comp_algorithm == 0) + softc->saved_comp_algorithm = + softc->comp_algorithm; + } + } else + softc->flags |= SA_FLAG_COMP_UNSUPP; + + if (softc->buffer_mode != SMH_SA_BUF_MODE_NOBUF) + goto exit; + + error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 0, 0); + + if (error == 0) + softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; +exit: + if (rblim != NULL) + free(rblim, M_TEMP); + + if (error != 0) { + cam_release_devq(ccb->ccb_h.path, + /*relsim_flags*/0, + /*reduction*/0, + /*timeout*/0, + /*getcount_only*/0); + } + } 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->flags & SA_FLAG_2FM_AT_EOD) != 0) + markswanted++; + } + + if (softc->filemarks < markswanted) { + markswanted -= softc->filemarks; + error = sawritefilemarks(periph, markswanted, + /*setmarks*/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; + 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) + && ((sense->flags & (SSD_EOM|SSD_FILEMARK|SSD_ILI)) != 0) + && ((sense_key == SSD_KEY_NO_SENSE) + || (sense_key == SSD_KEY_BLANK_CHECK))) { + u_int32_t info; + u_int32_t resid; + int defer_action; + + /* + * Filter out some sense codes of interest. + */ + 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) + info /= softc->media_blksize; + } + 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; + } + } + if ((sense->flags & SSD_FILEMARK) != 0) { + csio->resid = resid; + if (defer_action) + softc->flags |= SA_FLAG_EOF_PENDING; + } + 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; + } + } + } + } + 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; + + scsi_mode_sense(&ccb->csio, + /*retries*/ 1, + /*cbfcnp*/ sadone, + /*tag_action*/ MSG_SIMPLE_Q_TAG, + /*dbd*/ FALSE, + /*page_code*/ SMS_PAGE_CTRL_CURRENT, + /*page*/ (params_to_get & SA_PARAM_COMPRESSION) ? + SA_DATA_COMPRESSION_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*/SF_NO_PRINT, + &softc->device_stats); + + if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) + cam_release_devq(ccb->ccb_h.path, + /* relsim_flags */0, + /* opening_reduction */0, + /* timeout */0, + /* getcount_only */ 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. Remeber 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)); + } + + } 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) +{ + 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); + + /* + * 0x7f means "same as before" + */ + if (params_to_set & SA_PARAM_DENSITY) + mode_blk->density = density; + else + mode_blk->density = 0x7f; + + /* + * 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*/ 0, &softc->device_stats); + + if (error == 0) { + xpt_release_ccb(ccb); + } else { + if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) + cam_release_devq(ccb->ccb_h.path, + /*relsim_flags*/0, + /*reduction*/0, + /*timeout*/0, + /*getcount_only*/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); + + /* + * 0x7f means "same as before". + */ + if (params_to_set & SA_PARAM_DENSITY) + mode_blk->density = current_density; + else + mode_blk->density = 0x7f; + + 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, /*cam_flags*/ 0, + /*sense_flags*/ 0, &softc->device_stats); + + if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) + cam_release_devq(ccb->ccb_h.path, + /*relsim_flags*/0, + /*reduction*/0, + /*timeout*/0, + /*getcount_only*/0); + + xpt_release_ccb(ccb); + } + + if (params_to_set & SA_PARAM_COMPRESSION) + free(current_comp_page, M_TEMP); + + 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; + + softc = (struct sa_softc *)periph->softc; + + if (((action == PR_ALLOW) + && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) + || ((action == PR_PREVENT) + && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0)) { + return; + } + + ccb = cam_periph_getccb(periph, /*priority*/1); + + scsi_prevent(&ccb->csio, + /*retries*/0, + /*cbcfp*/sadone, + MSG_SIMPLE_Q_TAG, + action, + SSD_FULL_SIZE, + 60000); + + error = cam_periph_runccb(ccb, saerror, /*cam_flags*/0, + /*sense_flags*/0, &softc->device_stats); + + if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) + cam_release_devq(ccb->ccb_h.path, + /*relsim_flags*/0, + /*reduction*/0, + /*timeout*/0, + /*getcount_only*/0); + + + 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); + + /* + * Put in a 2 hour timeout to deal with especially slow tape drives. + */ + scsi_rewind(&ccb->csio, + /*retries*/1, + /*cbcfp*/sadone, + MSG_SIMPLE_Q_TAG, + /*immediate*/FALSE, + SSD_FULL_SIZE, + (120 * 60 * 1000)); /* 2 hours */ + + error = cam_periph_runccb(ccb, saerror, /*cam_flags*/0, + /*sense_flags*/0, &softc->device_stats); + + if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) + cam_release_devq(ccb->ccb_h.path, + /*relsim_flags*/0, + /*reduction*/0, + /*timeout*/0, + /*getcount_only*/0); + + xpt_release_ccb(ccb); + + 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); + + scsi_space(&ccb->csio, + /*retries*/1, + /*cbcfp*/sadone, + MSG_SIMPLE_Q_TAG, + code, count, + SSD_FULL_SIZE, + 60 * 60 *1000); + + error = cam_periph_runccb(ccb, saerror, /*cam_flags*/0, + /*sense_flags*/0, &softc->device_stats); + + if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) + cam_release_devq(ccb->ccb_h.path, + /*relsim_flags*/0, + /*reduction*/0, + /*timeout*/0, + /*getcount_only*/0); + + xpt_release_ccb(ccb); + + 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); + + scsi_write_filemarks(&ccb->csio, + /*retries*/1, + /*cbcfp*/sadone, + MSG_SIMPLE_Q_TAG, + /*immediate*/FALSE, + setmarks, + nmarks, + SSD_FULL_SIZE, + 60000); + + error = cam_periph_runccb(ccb, saerror, /*cam_flags*/0, + /*sense_flags*/0, &softc->device_stats); + + if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) + cam_release_devq(ccb->ccb_h.path, + /*relsim_flags*/0, + /*reduction*/0, + /*timeout*/0, + /*getcount_only*/0); + + if (error == 0) { + struct sa_softc *softc; + + softc = (struct sa_softc *)periph->softc; + softc->filemarks += nmarks; + } + + xpt_release_ccb(ccb); + + 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); + + scsi_load_unload(&ccb->csio, + /*retries*/ 1, + /*cbfcnp*/ sadone, + MSG_SIMPLE_Q_TAG, + /*immediate*/ FALSE, + /*eot*/ FALSE, + /*reten*/ TRUE, + /*load*/ TRUE, + SSD_FULL_SIZE, + 60000); + + error = cam_periph_runccb(ccb, saerror, /*cam_flags*/0, + /*sense_flags*/0, &softc->device_stats); + + if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) + cam_release_devq(ccb->ccb_h.path, + /*relsim_flags*/0, + /*reduction*/0, + /*timeout*/0, + /*getcount_only*/0); + + xpt_release_ccb(ccb); + + 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, /*priority*/ 1); + + scsi_reserve_release_unit(&ccb->csio, + /*retries*/ 1, + /*cbfcnp*/ sadone, + /*tag_action*/ MSG_SIMPLE_Q_TAG, + /*third_party*/ FALSE, + /*third_party_id*/ 0, + /*sense_len*/ SSD_FULL_SIZE, + /*timeout*/ 5000, + reserve); + + /* + * 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. + */ + error = cam_periph_runccb(ccb, saerror, /*cam_flags*/0, + /*sense_flags*/SF_RETRY_UA, + &softc->device_stats); + + if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) + cam_release_devq(ccb->ccb_h.path, + /*relsim_flags*/0, + /*reduction*/0, + /*timeout*/0, + /*getcount_only*/0); + + xpt_release_ccb(ccb); + + 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); + + scsi_load_unload(&ccb->csio, + /*retries*/1, + /*cbfcnp*/sadone, + MSG_SIMPLE_Q_TAG, + /*immediate*/FALSE, + /*eot*/FALSE, + /*reten*/FALSE, + load, + SSD_FULL_SIZE, + 60000); + + error = cam_periph_runccb(ccb, saerror, /*cam_flags*/0, + /*sense_flags*/0, &softc->device_stats); + + if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) + cam_release_devq(ccb->ccb_h.path, + /*relsim_flags*/0, + /*reduction*/0, + /*timeout*/0, + /*getcount_only*/0); + + xpt_release_ccb(ccb); + + 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, + /*retries*/ 1, + /*cbfcnp*/ sadone, + /*tag_action*/ MSG_SIMPLE_Q_TAG, + /*immediate*/ FALSE, + /*long_erase*/ longerase, + /*sense_len*/ SSD_FULL_SIZE, + /*timeout*/ 4 * 60 * 60 * 1000); /* 4 hours */ + + error = cam_periph_runccb(ccb, saerror, /*cam_flags*/0, + /*sense_flags*/0, &softc->device_stats); + + if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) + cam_release_devq(ccb->ccb_h.path, + /*relsim_flags*/0, + /*reduction*/0, + /*timeout*/0, + /*getcount_only*/0); + + 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); +} |
