362abc449c
module-specific malloc types. These should help us to pinpoint the possible memory leakage in the future. - Implementing xpt_alloc_ccb_nowait() and replacing all malloc/free based CCB memory management with xpt_alloc_ccb[_nowait]/xpt_free_ccb. Hopefully this would be helpful if someday we move the CCB allocator to use UMA instead of malloc(). Encouraged by: jeffr, rwatson Reviewed by: gibbs, scottl Approved by: re (scottl)
3607 lines
95 KiB
C
3607 lines
95 KiB
C
/*-
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* Implementation of SCSI Sequential Access Peripheral driver for CAM.
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*
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* Copyright (c) 1999, 2000 Matthew Jacob
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/queue.h>
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#ifdef _KERNEL
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#endif
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/bio.h>
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#include <sys/limits.h>
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#include <sys/malloc.h>
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#include <sys/mtio.h>
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#ifdef _KERNEL
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#include <sys/conf.h>
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#endif
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#include <sys/devicestat.h>
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#ifndef _KERNEL
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#include <stdio.h>
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#include <string.h>
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#endif
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#include <cam/cam.h>
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#include <cam/cam_ccb.h>
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#include <cam/cam_periph.h>
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#include <cam/cam_xpt_periph.h>
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#include <cam/cam_debug.h>
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#include <cam/scsi/scsi_all.h>
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#include <cam/scsi/scsi_message.h>
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#include <cam/scsi/scsi_sa.h>
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#ifdef _KERNEL
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#include <opt_sa.h>
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#ifndef SA_IO_TIMEOUT
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#define SA_IO_TIMEOUT 4
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#endif
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#ifndef SA_SPACE_TIMEOUT
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#define SA_SPACE_TIMEOUT 1 * 60
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#endif
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#ifndef SA_REWIND_TIMEOUT
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#define SA_REWIND_TIMEOUT 2 * 60
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#endif
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#ifndef SA_ERASE_TIMEOUT
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#define SA_ERASE_TIMEOUT 4 * 60
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#endif
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#define SCSIOP_TIMEOUT (60 * 1000) /* not an option */
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#define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000)
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#define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000)
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#define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000)
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#define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000)
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/*
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* Additional options that can be set for config: SA_1FM_AT_EOT
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*/
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#ifndef UNUSED_PARAMETER
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#define UNUSED_PARAMETER(x) x = x
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#endif
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#define QFRLS(ccb) \
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if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \
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cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE)
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/*
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* Driver states
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*/
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MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers");
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typedef enum {
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SA_STATE_NORMAL, SA_STATE_ABNORMAL
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} sa_state;
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#define ccb_pflags ppriv_field0
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#define ccb_bp ppriv_ptr1
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#define SA_CCB_BUFFER_IO 0x0
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#define SA_CCB_WAITING 0x1
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#define SA_CCB_TYPEMASK 0x1
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#define SA_POSITION_UPDATED 0x2
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#define Set_CCB_Type(x, type) \
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x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \
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x->ccb_h.ccb_pflags |= type
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#define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK)
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typedef enum {
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SA_FLAG_OPEN = 0x0001,
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SA_FLAG_FIXED = 0x0002,
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SA_FLAG_TAPE_LOCKED = 0x0004,
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SA_FLAG_TAPE_MOUNTED = 0x0008,
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SA_FLAG_TAPE_WP = 0x0010,
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SA_FLAG_TAPE_WRITTEN = 0x0020,
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SA_FLAG_EOM_PENDING = 0x0040,
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SA_FLAG_EIO_PENDING = 0x0080,
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SA_FLAG_EOF_PENDING = 0x0100,
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SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING|
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SA_FLAG_EOF_PENDING),
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SA_FLAG_INVALID = 0x0200,
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SA_FLAG_COMP_ENABLED = 0x0400,
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SA_FLAG_COMP_SUPP = 0x0800,
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SA_FLAG_COMP_UNSUPP = 0x1000,
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SA_FLAG_TAPE_FROZEN = 0x2000
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} sa_flags;
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typedef enum {
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SA_MODE_REWIND = 0x00,
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SA_MODE_NOREWIND = 0x01,
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SA_MODE_OFFLINE = 0x02
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} sa_mode;
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typedef enum {
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SA_PARAM_NONE = 0x00,
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SA_PARAM_BLOCKSIZE = 0x01,
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SA_PARAM_DENSITY = 0x02,
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SA_PARAM_COMPRESSION = 0x04,
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SA_PARAM_BUFF_MODE = 0x08,
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SA_PARAM_NUMBLOCKS = 0x10,
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SA_PARAM_WP = 0x20,
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SA_PARAM_SPEED = 0x40,
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SA_PARAM_ALL = 0x7f
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} sa_params;
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typedef enum {
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SA_QUIRK_NONE = 0x00,
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SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */
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SA_QUIRK_FIXED = 0x02, /* Force fixed mode */
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SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */
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SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */
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SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */
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SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */
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SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */
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SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */
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} sa_quirks;
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/* units are bits 4-7, 16-21 (1024 units) */
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#define SAUNIT(DEV) \
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(((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16))
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#define SAMODE(z) ((minor(z) & 0x3))
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#define SADENSITY(z) (((minor(z) >> 2) & 0x3))
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#define SA_IS_CTRL(z) (minor(z) & (1 << 29))
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#define SA_NOT_CTLDEV 0
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#define SA_CTLDEV 1
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#define SA_ATYPE_R 0
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#define SA_ATYPE_NR 1
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#define SA_ATYPE_ER 2
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#define SAMINOR(ctl, unit, mode, access) \
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((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \
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(mode << 0x2) | (access & 0x3))
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#define SA_NUM_MODES 4
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struct sa_devs {
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struct cdev *ctl_dev;
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struct sa_mode_devs {
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struct cdev *r_dev;
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struct cdev *nr_dev;
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struct cdev *er_dev;
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} mode_devs[SA_NUM_MODES];
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};
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struct sa_softc {
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sa_state state;
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sa_flags flags;
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sa_quirks quirks;
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struct bio_queue_head bio_queue;
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int queue_count;
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struct devstat *device_stats;
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struct sa_devs devs;
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int blk_gran;
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int blk_mask;
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int blk_shift;
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u_int32_t max_blk;
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u_int32_t min_blk;
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u_int32_t comp_algorithm;
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u_int32_t saved_comp_algorithm;
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u_int32_t media_blksize;
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u_int32_t last_media_blksize;
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u_int32_t media_numblks;
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u_int8_t media_density;
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u_int8_t speed;
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u_int8_t scsi_rev;
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u_int8_t dsreg; /* mtio mt_dsreg, redux */
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int buffer_mode;
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int filemarks;
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union ccb saved_ccb;
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int last_resid_was_io;
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/*
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* Relative to BOT Location.
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*/
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daddr_t fileno;
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daddr_t blkno;
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/*
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* Latched Error Info
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*/
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struct {
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struct scsi_sense_data _last_io_sense;
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u_int32_t _last_io_resid;
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u_int8_t _last_io_cdb[CAM_MAX_CDBLEN];
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struct scsi_sense_data _last_ctl_sense;
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u_int32_t _last_ctl_resid;
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u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN];
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#define last_io_sense errinfo._last_io_sense
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#define last_io_resid errinfo._last_io_resid
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#define last_io_cdb errinfo._last_io_cdb
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#define last_ctl_sense errinfo._last_ctl_sense
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#define last_ctl_resid errinfo._last_ctl_resid
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#define last_ctl_cdb errinfo._last_ctl_cdb
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} errinfo;
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/*
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* Misc other flags/state
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*/
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u_int32_t
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: 31,
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ctrl_mode : 1; /* control device open */
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};
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struct sa_quirk_entry {
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struct scsi_inquiry_pattern inq_pat; /* matching pattern */
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sa_quirks quirks; /* specific quirk type */
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u_int32_t prefblk; /* preferred blocksize when in fixed mode */
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};
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static struct sa_quirk_entry sa_quirk_table[] =
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{
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream",
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"ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD |
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SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
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"Python 06408*", "*"}, SA_QUIRK_NODREAD, 0
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
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"Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
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"Python*", "*"}, SA_QUIRK_NODREAD, 0
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
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"VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
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"VIPER 2525 25462", "-011"},
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SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
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"VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
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},
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#if 0
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
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"C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0,
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},
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#endif
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
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"C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
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"T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
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"T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
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"HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
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"*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA",
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"123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
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},
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{ /* jreynold@primenet.com */
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
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"STT8000N*", "*"}, SA_QUIRK_1FM, 0
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},
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{ /* mike@sentex.net */
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
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"STT20000*", "*"}, SA_QUIRK_1FM, 0
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
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" TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
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" TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
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" TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
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" TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
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" SLR*", "*"}, SA_QUIRK_1FM, 0
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
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"5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
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},
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{
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{ T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
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"51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
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}
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};
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|
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static d_open_t saopen;
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static d_close_t saclose;
|
|
static d_strategy_t sastrategy;
|
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static d_ioctl_t saioctl;
|
|
static periph_init_t sainit;
|
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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,
|
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union ccb *start_ccb);
|
|
static int saerror(union ccb *ccb, u_int32_t cam_flags,
|
|
u_int32_t sense_flags);
|
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static int samarkswanted(struct cam_periph *);
|
|
static int sacheckeod(struct cam_periph *periph);
|
|
static int sagetparams(struct cam_periph *periph,
|
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sa_params params_to_get,
|
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u_int32_t *blocksize, u_int8_t *density,
|
|
u_int32_t *numblocks, int *buff_mode,
|
|
u_int8_t *write_protect, u_int8_t *speed,
|
|
int *comp_supported, int *comp_enabled,
|
|
u_int32_t *comp_algorithm,
|
|
sa_comp_t *comp_page);
|
|
static int sasetparams(struct cam_periph *periph,
|
|
sa_params params_to_set,
|
|
u_int32_t blocksize, u_int8_t density,
|
|
u_int32_t comp_algorithm,
|
|
u_int32_t sense_flags);
|
|
static void saprevent(struct cam_periph *periph, int action);
|
|
static int sarewind(struct cam_periph *periph);
|
|
static int saspace(struct cam_periph *periph, int count,
|
|
scsi_space_code code);
|
|
static int samount(struct cam_periph *, int, struct cdev *);
|
|
static int saretension(struct cam_periph *periph);
|
|
static int sareservereleaseunit(struct cam_periph *periph,
|
|
int reserve);
|
|
static int saloadunload(struct cam_periph *periph, int load);
|
|
static int saerase(struct cam_periph *periph, int longerase);
|
|
static int sawritefilemarks(struct cam_periph *periph,
|
|
int nmarks, int setmarks);
|
|
static int sardpos(struct cam_periph *periph, int, u_int32_t *);
|
|
static int sasetpos(struct cam_periph *periph, int, u_int32_t *);
|
|
|
|
|
|
static struct periph_driver sadriver =
|
|
{
|
|
sainit, "sa",
|
|
TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0
|
|
};
|
|
|
|
PERIPHDRIVER_DECLARE(sa, sadriver);
|
|
|
|
/* For 2.2-stable support */
|
|
#ifndef D_TAPE
|
|
#define D_TAPE 0
|
|
#endif
|
|
|
|
|
|
static struct cdevsw sa_cdevsw = {
|
|
.d_version = D_VERSION,
|
|
.d_open = saopen,
|
|
.d_close = saclose,
|
|
.d_read = physread,
|
|
.d_write = physwrite,
|
|
.d_ioctl = saioctl,
|
|
.d_strategy = sastrategy,
|
|
.d_name = "sa",
|
|
.d_flags = D_TAPE | D_NEEDGIANT,
|
|
};
|
|
|
|
static int
|
|
saopen(struct cdev *dev, int flags, int fmt, struct thread *td)
|
|
{
|
|
struct cam_periph *periph;
|
|
struct sa_softc *softc;
|
|
int unit;
|
|
int error;
|
|
int s;
|
|
|
|
unit = SAUNIT(dev);
|
|
|
|
s = splsoftcam();
|
|
periph = (struct cam_periph *)dev->si_drv1;
|
|
if (periph == NULL) {
|
|
(void) splx(s);
|
|
return (ENXIO);
|
|
}
|
|
softc = (struct sa_softc *)periph->softc;
|
|
if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) {
|
|
splx(s);
|
|
return (error);
|
|
}
|
|
splx(s);
|
|
|
|
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
|
|
("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags));
|
|
|
|
if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
|
|
cam_periph_unlock(periph);
|
|
return (ENXIO);
|
|
}
|
|
if (SA_IS_CTRL(dev)) {
|
|
softc->ctrl_mode = 1;
|
|
cam_periph_unlock(periph);
|
|
return (0);
|
|
}
|
|
|
|
|
|
if (softc->flags & SA_FLAG_OPEN) {
|
|
error = EBUSY;
|
|
} else if (softc->flags & SA_FLAG_INVALID) {
|
|
error = ENXIO;
|
|
} else {
|
|
/*
|
|
* The function samount ensures media is loaded and ready.
|
|
* It also does a device RESERVE if the tape isn't yet mounted.
|
|
*/
|
|
error = samount(periph, flags, dev);
|
|
}
|
|
|
|
if (error) {
|
|
cam_periph_release(periph);
|
|
} else {
|
|
saprevent(periph, PR_PREVENT);
|
|
softc->flags |= SA_FLAG_OPEN;
|
|
}
|
|
cam_periph_unlock(periph);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
saclose(struct cdev *dev, int flag, int fmt, struct thread *td)
|
|
{
|
|
struct cam_periph *periph;
|
|
struct sa_softc *softc;
|
|
int unit, mode, error, writing, tmp;
|
|
int closedbits = SA_FLAG_OPEN;
|
|
|
|
unit = SAUNIT(dev);
|
|
mode = SAMODE(dev);
|
|
periph = (struct cam_periph *)dev->si_drv1;
|
|
if (periph == NULL)
|
|
return (ENXIO);
|
|
|
|
softc = (struct sa_softc *)periph->softc;
|
|
|
|
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
|
|
("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags));
|
|
|
|
|
|
if ((error = cam_periph_lock(periph, PRIBIO)) != 0) {
|
|
return (error);
|
|
}
|
|
|
|
if (SA_IS_CTRL(dev)) {
|
|
softc->ctrl_mode = 0;
|
|
cam_periph_release(periph);
|
|
cam_periph_unlock(periph);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Were we writing the tape?
|
|
*/
|
|
writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0;
|
|
|
|
/*
|
|
* See whether or not we need to write filemarks. If this
|
|
* fails, we probably have to assume we've lost tape
|
|
* position.
|
|
*/
|
|
error = sacheckeod(periph);
|
|
if (error) {
|
|
xpt_print_path(periph->path);
|
|
printf("failed to write terminating filemark(s)\n");
|
|
softc->flags |= SA_FLAG_TAPE_FROZEN;
|
|
}
|
|
|
|
/*
|
|
* Whatever we end up doing, allow users to eject tapes from here on.
|
|
*/
|
|
saprevent(periph, PR_ALLOW);
|
|
|
|
/*
|
|
* Decide how to end...
|
|
*/
|
|
if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
|
|
closedbits |= SA_FLAG_TAPE_FROZEN;
|
|
} else switch (mode) {
|
|
case SA_MODE_OFFLINE:
|
|
/*
|
|
* An 'offline' close is an unconditional release of
|
|
* frozen && mount conditions, irrespective of whether
|
|
* these operations succeeded. The reason for this is
|
|
* to allow at least some kind of programmatic way
|
|
* around our state getting all fouled up. If somebody
|
|
* issues an 'offline' command, that will be allowed
|
|
* to clear state.
|
|
*/
|
|
(void) sarewind(periph);
|
|
(void) saloadunload(periph, FALSE);
|
|
closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN;
|
|
break;
|
|
case SA_MODE_REWIND:
|
|
/*
|
|
* If the rewind fails, return an error- if anyone cares,
|
|
* but not overwriting any previous error.
|
|
*
|
|
* We don't clear the notion of mounted here, but we do
|
|
* clear the notion of frozen if we successfully rewound.
|
|
*/
|
|
tmp = sarewind(periph);
|
|
if (tmp) {
|
|
if (error != 0)
|
|
error = tmp;
|
|
} else {
|
|
closedbits |= SA_FLAG_TAPE_FROZEN;
|
|
}
|
|
break;
|
|
case SA_MODE_NOREWIND:
|
|
/*
|
|
* If we're not rewinding/unloading the tape, find out
|
|
* whether we need to back up over one of two filemarks
|
|
* we wrote (if we wrote two filemarks) so that appends
|
|
* from this point on will be sane.
|
|
*/
|
|
if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) {
|
|
tmp = saspace(periph, -1, SS_FILEMARKS);
|
|
if (tmp) {
|
|
xpt_print_path(periph->path);
|
|
printf("unable to backspace over one of double"
|
|
" filemarks at end of tape\n");
|
|
xpt_print_path(periph->path);
|
|
printf("it is possible that this device"
|
|
" needs a SA_QUIRK_1FM quirk set for it\n");
|
|
softc->flags |= SA_FLAG_TAPE_FROZEN;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
xpt_print_path(periph->path);
|
|
panic("unknown mode 0x%x in saclose", mode);
|
|
/* NOTREACHED */
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* We wish to note here that there are no more filemarks to be written.
|
|
*/
|
|
softc->filemarks = 0;
|
|
softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
|
|
|
|
/*
|
|
* And we are no longer open for business.
|
|
*/
|
|
softc->flags &= ~closedbits;
|
|
|
|
/*
|
|
* Inform users if tape state if frozen....
|
|
*/
|
|
if (softc->flags & SA_FLAG_TAPE_FROZEN) {
|
|
xpt_print_path(periph->path);
|
|
printf("tape is now frozen- use an OFFLINE, REWIND or MTEOM "
|
|
"command to clear this state.\n");
|
|
}
|
|
|
|
/* release the device if it is no longer mounted */
|
|
if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0)
|
|
sareservereleaseunit(periph, FALSE);
|
|
|
|
cam_periph_unlock(periph);
|
|
cam_periph_release(periph);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Actually translate the requested transfer into one the physical driver
|
|
* can understand. The transfer is described by a buf and will include
|
|
* only one physical transfer.
|
|
*/
|
|
static void
|
|
sastrategy(struct bio *bp)
|
|
{
|
|
struct cam_periph *periph;
|
|
struct sa_softc *softc;
|
|
int s;
|
|
|
|
bp->bio_resid = bp->bio_bcount;
|
|
if (SA_IS_CTRL(bp->bio_dev)) {
|
|
biofinish(bp, NULL, EINVAL);
|
|
return;
|
|
}
|
|
periph = (struct cam_periph *)bp->bio_dev->si_drv1;
|
|
if (periph == NULL) {
|
|
biofinish(bp, NULL, ENXIO);
|
|
return;
|
|
}
|
|
softc = (struct sa_softc *)periph->softc;
|
|
|
|
s = splsoftcam();
|
|
|
|
if (softc->flags & SA_FLAG_INVALID) {
|
|
splx(s);
|
|
biofinish(bp, NULL, ENXIO);
|
|
return;
|
|
}
|
|
|
|
if (softc->flags & SA_FLAG_TAPE_FROZEN) {
|
|
splx(s);
|
|
biofinish(bp, NULL, EPERM);
|
|
return;
|
|
}
|
|
|
|
splx(s);
|
|
|
|
/*
|
|
* If it's a null transfer, return immediatly
|
|
*/
|
|
if (bp->bio_bcount == 0) {
|
|
biodone(bp);
|
|
return;
|
|
}
|
|
|
|
/* valid request? */
|
|
if (softc->flags & SA_FLAG_FIXED) {
|
|
/*
|
|
* Fixed block device. The byte count must
|
|
* be a multiple of our block size.
|
|
*/
|
|
if (((softc->blk_mask != ~0) &&
|
|
((bp->bio_bcount & softc->blk_mask) != 0)) ||
|
|
((softc->blk_mask == ~0) &&
|
|
((bp->bio_bcount % softc->min_blk) != 0))) {
|
|
xpt_print_path(periph->path);
|
|
printf("Invalid request. Fixed block device "
|
|
"requests must be a multiple "
|
|
"of %d bytes\n", softc->min_blk);
|
|
biofinish(bp, NULL, EINVAL);
|
|
return;
|
|
}
|
|
} else if ((bp->bio_bcount > softc->max_blk) ||
|
|
(bp->bio_bcount < softc->min_blk) ||
|
|
(bp->bio_bcount & softc->blk_mask) != 0) {
|
|
|
|
xpt_print_path(periph->path);
|
|
printf("Invalid request. Variable block device "
|
|
"requests must be ");
|
|
if (softc->blk_mask != 0) {
|
|
printf("a multiple of %d ", (0x1 << softc->blk_gran));
|
|
}
|
|
printf("between %d and %d bytes\n", softc->min_blk,
|
|
softc->max_blk);
|
|
biofinish(bp, NULL, EINVAL);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
bioq_insert_tail(&softc->bio_queue, bp);
|
|
softc->queue_count++;
|
|
#if 0
|
|
CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
|
|
("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount,
|
|
(softc->flags & SA_FLAG_FIXED)? "fixed" : "variable",
|
|
(bp->bio_cmd == BIO_READ)? "read" : "write"));
|
|
#endif
|
|
if (softc->queue_count > 1) {
|
|
CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
|
|
("sastrategy: queue count now %d\n", softc->queue_count));
|
|
}
|
|
splx(s);
|
|
|
|
/*
|
|
* Schedule ourselves for performing the work.
|
|
*/
|
|
xpt_schedule(periph, 1);
|
|
|
|
return;
|
|
}
|
|
|
|
static int
|
|
saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
|
|
{
|
|
struct cam_periph *periph;
|
|
struct sa_softc *softc;
|
|
scsi_space_code spaceop;
|
|
int didlockperiph = 0;
|
|
int s;
|
|
int mode;
|
|
int error = 0;
|
|
|
|
mode = SAMODE(dev);
|
|
error = 0; /* shut up gcc */
|
|
spaceop = 0; /* shut up gcc */
|
|
|
|
periph = (struct cam_periph *)dev->si_drv1;
|
|
if (periph == NULL)
|
|
return (ENXIO);
|
|
|
|
softc = (struct sa_softc *)periph->softc;
|
|
|
|
/*
|
|
* Check for control mode accesses. We allow MTIOCGET and
|
|
* MTIOCERRSTAT (but need to be the only one open in order
|
|
* to clear latched status), and MTSETBSIZE, MTSETDNSTY
|
|
* and MTCOMP (but need to be the only one accessing this
|
|
* device to run those).
|
|
*/
|
|
|
|
if (SA_IS_CTRL(dev)) {
|
|
switch (cmd) {
|
|
case MTIOCGETEOTMODEL:
|
|
case MTIOCGET:
|
|
break;
|
|
case MTIOCERRSTAT:
|
|
/*
|
|
* If the periph isn't already locked, lock it
|
|
* so our MTIOCERRSTAT can reset latched error stats.
|
|
*
|
|
* If the periph is already locked, skip it because
|
|
* we're just getting status and it'll be up to the
|
|
* other thread that has this device open to do
|
|
* an MTIOCERRSTAT that would clear latched status.
|
|
*/
|
|
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 MTIOCTOP:
|
|
{
|
|
struct mtop *mt = (struct mtop *) arg;
|
|
|
|
/*
|
|
* Check to make sure it's an OP we can perform
|
|
* with no media inserted.
|
|
*/
|
|
switch (mt->mt_op) {
|
|
case MTSETBSIZ:
|
|
case MTSETDNSTY:
|
|
case MTCOMP:
|
|
mt = NULL;
|
|
/* FALLTHROUGH */
|
|
default:
|
|
break;
|
|
}
|
|
if (mt != NULL) {
|
|
break;
|
|
}
|
|
/* FALLTHROUGH */
|
|
}
|
|
case MTIOCSETEOTMODEL:
|
|
/*
|
|
* We need to acquire the peripheral here rather
|
|
* than at open time because we are sharing writable
|
|
* access to data structures.
|
|
*/
|
|
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;
|
|
|
|
/*
|
|
* If this isn't the control mode device, actually go out
|
|
* and ask the drive again what it's set to.
|
|
*/
|
|
if (!SA_IS_CTRL(dev)) {
|
|
u_int8_t write_protect;
|
|
int comp_enabled, comp_supported;
|
|
error = sagetparams(periph, SA_PARAM_ALL,
|
|
&softc->media_blksize, &softc->media_density,
|
|
&softc->media_numblks, &softc->buffer_mode,
|
|
&write_protect, &softc->speed, &comp_supported,
|
|
&comp_enabled, &softc->comp_algorithm, NULL);
|
|
if (error)
|
|
break;
|
|
if (write_protect)
|
|
softc->flags |= SA_FLAG_TAPE_WP;
|
|
else
|
|
softc->flags &= ~SA_FLAG_TAPE_WP;
|
|
softc->flags &= ~(SA_FLAG_COMP_SUPP|
|
|
SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP);
|
|
if (comp_supported) {
|
|
if (softc->saved_comp_algorithm == 0)
|
|
softc->saved_comp_algorithm =
|
|
softc->comp_algorithm;
|
|
softc->flags |= SA_FLAG_COMP_SUPP;
|
|
if (comp_enabled)
|
|
softc->flags |= SA_FLAG_COMP_ENABLED;
|
|
} else
|
|
softc->flags |= SA_FLAG_COMP_UNSUPP;
|
|
}
|
|
bzero(g, sizeof(struct mtget));
|
|
g->mt_type = MT_ISAR;
|
|
if (softc->flags & SA_FLAG_COMP_UNSUPP) {
|
|
g->mt_comp = MT_COMP_UNSUPP;
|
|
g->mt_comp0 = MT_COMP_UNSUPP;
|
|
g->mt_comp1 = MT_COMP_UNSUPP;
|
|
g->mt_comp2 = MT_COMP_UNSUPP;
|
|
g->mt_comp3 = MT_COMP_UNSUPP;
|
|
} else {
|
|
if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) {
|
|
g->mt_comp = MT_COMP_DISABLED;
|
|
} else {
|
|
g->mt_comp = softc->comp_algorithm;
|
|
}
|
|
g->mt_comp0 = softc->comp_algorithm;
|
|
g->mt_comp1 = softc->comp_algorithm;
|
|
g->mt_comp2 = softc->comp_algorithm;
|
|
g->mt_comp3 = softc->comp_algorithm;
|
|
}
|
|
g->mt_density = softc->media_density;
|
|
g->mt_density0 = softc->media_density;
|
|
g->mt_density1 = softc->media_density;
|
|
g->mt_density2 = softc->media_density;
|
|
g->mt_density3 = softc->media_density;
|
|
g->mt_blksiz = softc->media_blksize;
|
|
g->mt_blksiz0 = softc->media_blksize;
|
|
g->mt_blksiz1 = softc->media_blksize;
|
|
g->mt_blksiz2 = softc->media_blksize;
|
|
g->mt_blksiz3 = softc->media_blksize;
|
|
g->mt_fileno = softc->fileno;
|
|
g->mt_blkno = softc->blkno;
|
|
g->mt_dsreg = (short) softc->dsreg;
|
|
/*
|
|
* Yes, we know that this is likely to overflow
|
|
*/
|
|
if (softc->last_resid_was_io) {
|
|
if ((g->mt_resid = (short) softc->last_io_resid) != 0) {
|
|
if (SA_IS_CTRL(dev) == 0 || didlockperiph) {
|
|
softc->last_io_resid = 0;
|
|
}
|
|
}
|
|
} else {
|
|
if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) {
|
|
if (SA_IS_CTRL(dev) == 0 || didlockperiph) {
|
|
softc->last_ctl_resid = 0;
|
|
}
|
|
}
|
|
}
|
|
error = 0;
|
|
break;
|
|
}
|
|
case MTIOCERRSTAT:
|
|
{
|
|
struct scsi_tape_errors *sep =
|
|
&((union mterrstat *)arg)->scsi_errstat;
|
|
|
|
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
|
|
("saioctl: MTIOCERRSTAT\n"));
|
|
|
|
bzero(sep, sizeof(*sep));
|
|
sep->io_resid = softc->last_io_resid;
|
|
bcopy((caddr_t) &softc->last_io_sense, sep->io_sense,
|
|
sizeof (sep->io_sense));
|
|
bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb,
|
|
sizeof (sep->io_cdb));
|
|
sep->ctl_resid = softc->last_ctl_resid;
|
|
bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense,
|
|
sizeof (sep->ctl_sense));
|
|
bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb,
|
|
sizeof (sep->ctl_cdb));
|
|
|
|
if (SA_IS_CTRL(dev) == 0 || 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 */
|
|
/*
|
|
* We don't need to clear the SA_FLAG_TAPE_WRITTEN
|
|
* flag because by keeping track of filemarks
|
|
* we have last written we know ehether or not
|
|
* we need to write more when we close the device.
|
|
*/
|
|
error = sawritefilemarks(periph, count, FALSE);
|
|
break;
|
|
case MTWSS: /* write a setmark */
|
|
error = sawritefilemarks(periph, count, TRUE);
|
|
break;
|
|
case MTBSR: /* backward space record */
|
|
case MTFSR: /* forward space record */
|
|
case MTBSF: /* backward space file */
|
|
case MTFSF: /* forward space file */
|
|
case MTBSS: /* backward space setmark */
|
|
case MTFSS: /* forward space setmark */
|
|
case MTEOD: /* space to end of recorded medium */
|
|
{
|
|
int nmarks;
|
|
|
|
spaceop = SS_FILEMARKS;
|
|
nmarks = softc->filemarks;
|
|
error = sacheckeod(periph);
|
|
if (error) {
|
|
xpt_print_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|SA_FLAG_TAPE_FROZEN);
|
|
softc->filemarks = 0;
|
|
break;
|
|
}
|
|
case MTREW: /* rewind */
|
|
(void) sacheckeod(periph);
|
|
error = sarewind(periph);
|
|
/* see above */
|
|
softc->flags &=
|
|
~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
|
|
softc->flags &= ~SA_FLAG_ERR_PENDING;
|
|
softc->filemarks = 0;
|
|
break;
|
|
case MTERASE: /* erase */
|
|
error = saerase(periph, count);
|
|
softc->flags &=
|
|
~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
|
|
softc->flags &= ~SA_FLAG_ERR_PENDING;
|
|
break;
|
|
case MTRETENS: /* re-tension tape */
|
|
error = saretension(periph);
|
|
softc->flags &=
|
|
~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
|
|
softc->flags &= ~SA_FLAG_ERR_PENDING;
|
|
break;
|
|
case MTOFFL: /* rewind and put the drive offline */
|
|
|
|
(void) sacheckeod(periph);
|
|
/* see above */
|
|
softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
|
|
softc->filemarks = 0;
|
|
|
|
error = sarewind(periph);
|
|
/* clear the frozen flag anyway */
|
|
softc->flags &= ~SA_FLAG_TAPE_FROZEN;
|
|
|
|
/*
|
|
* Be sure to allow media removal before ejecting.
|
|
*/
|
|
|
|
saprevent(periph, PR_ALLOW);
|
|
if (error == 0) {
|
|
error = saloadunload(periph, FALSE);
|
|
if (error == 0) {
|
|
softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case MTNOP: /* no operation, sets status only */
|
|
case MTCACHE: /* enable controller cache */
|
|
case MTNOCACHE: /* disable controller cache */
|
|
error = 0;
|
|
break;
|
|
|
|
case MTSETBSIZ: /* Set block size for device */
|
|
|
|
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, SF_NO_PRINT);
|
|
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;
|
|
case MTIOCGETEOTMODEL:
|
|
error = 0;
|
|
if (softc->quirks & SA_QUIRK_1FM)
|
|
mode = 1;
|
|
else
|
|
mode = 2;
|
|
*((u_int32_t *) arg) = mode;
|
|
break;
|
|
case MTIOCSETEOTMODEL:
|
|
error = 0;
|
|
switch (*((u_int32_t *) arg)) {
|
|
case 1:
|
|
softc->quirks &= ~SA_QUIRK_2FM;
|
|
softc->quirks |= SA_QUIRK_1FM;
|
|
break;
|
|
case 2:
|
|
softc->quirks &= ~SA_QUIRK_1FM;
|
|
softc->quirks |= SA_QUIRK_2FM;
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
error = cam_periph_ioctl(periph, cmd, arg, saerror);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Check to see if we cleared a frozen state
|
|
*/
|
|
if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) {
|
|
switch(cmd) {
|
|
case MTIOCRDSPOS:
|
|
case MTIOCRDHPOS:
|
|
case MTIOCSLOCATE:
|
|
case MTIOCHLOCATE:
|
|
softc->fileno = (daddr_t) -1;
|
|
softc->blkno = (daddr_t) -1;
|
|
softc->flags &= ~SA_FLAG_TAPE_FROZEN;
|
|
xpt_print_path(periph->path);
|
|
printf("tape state now unfrozen.\n");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
if (didlockperiph) {
|
|
cam_periph_unlock(periph);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
sainit(void)
|
|
{
|
|
cam_status status;
|
|
struct cam_path *path;
|
|
|
|
/*
|
|
* 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, 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);
|
|
}
|
|
}
|
|
|
|
static void
|
|
saoninvalidate(struct cam_periph *periph)
|
|
{
|
|
struct sa_softc *softc;
|
|
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.
|
|
*/
|
|
bioq_flush(&softc->bio_queue, NULL, ENXIO);
|
|
softc->queue_count = 0;
|
|
splx(s);
|
|
|
|
xpt_print_path(periph->path);
|
|
printf("lost device\n");
|
|
|
|
}
|
|
|
|
static void
|
|
sacleanup(struct cam_periph *periph)
|
|
{
|
|
struct sa_softc *softc;
|
|
int i;
|
|
|
|
softc = (struct sa_softc *)periph->softc;
|
|
|
|
devstat_remove_entry(softc->device_stats);
|
|
|
|
destroy_dev(softc->devs.ctl_dev);
|
|
|
|
for (i = 0; i < SA_NUM_MODES; i++) {
|
|
destroy_dev(softc->devs.mode_devs[i].r_dev);
|
|
destroy_dev(softc->devs.mode_devs[i].nr_dev);
|
|
destroy_dev(softc->devs.mode_devs[i].er_dev);
|
|
}
|
|
|
|
xpt_print_path(periph->path);
|
|
printf("removing device entry\n");
|
|
free(softc, M_SCSISA);
|
|
}
|
|
|
|
static void
|
|
saasync(void *callback_arg, u_int32_t code,
|
|
struct cam_path *path, void *arg)
|
|
{
|
|
struct cam_periph *periph;
|
|
|
|
periph = (struct cam_periph *)callback_arg;
|
|
switch (code) {
|
|
case AC_FOUND_DEVICE:
|
|
{
|
|
struct ccb_getdev *cgd;
|
|
cam_status status;
|
|
|
|
cgd = (struct ccb_getdev *)arg;
|
|
if (cgd == NULL)
|
|
break;
|
|
|
|
if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL)
|
|
break;
|
|
|
|
/*
|
|
* Allocate a peripheral instance for
|
|
* this device and start the probe
|
|
* process.
|
|
*/
|
|
status = cam_periph_alloc(saregister, saoninvalidate,
|
|
sacleanup, sastart,
|
|
"sa", CAM_PERIPH_BIO, cgd->ccb_h.path,
|
|
saasync, AC_FOUND_DEVICE, cgd);
|
|
|
|
if (status != CAM_REQ_CMP
|
|
&& status != CAM_REQ_INPROG)
|
|
printf("saasync: Unable to probe new device "
|
|
"due to status 0x%x\n", status);
|
|
break;
|
|
}
|
|
default:
|
|
cam_periph_async(periph, code, path, arg);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static cam_status
|
|
saregister(struct cam_periph *periph, void *arg)
|
|
{
|
|
struct sa_softc *softc;
|
|
struct ccb_setasync csa;
|
|
struct ccb_getdev *cgd;
|
|
caddr_t match;
|
|
int i;
|
|
|
|
cgd = (struct ccb_getdev *)arg;
|
|
if (periph == NULL) {
|
|
printf("saregister: periph was NULL!!\n");
|
|
return (CAM_REQ_CMP_ERR);
|
|
}
|
|
|
|
if (cgd == NULL) {
|
|
printf("saregister: no getdev CCB, can't register device\n");
|
|
return (CAM_REQ_CMP_ERR);
|
|
}
|
|
|
|
softc = (struct sa_softc *)
|
|
malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO);
|
|
if (softc == NULL) {
|
|
printf("saregister: Unable to probe new device. "
|
|
"Unable to allocate softc\n");
|
|
return (CAM_REQ_CMP_ERR);
|
|
}
|
|
softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data);
|
|
softc->state = SA_STATE_NORMAL;
|
|
softc->fileno = (daddr_t) -1;
|
|
softc->blkno = (daddr_t) -1;
|
|
|
|
bioq_init(&softc->bio_queue);
|
|
periph->softc = softc;
|
|
|
|
/*
|
|
* See if this device has any quirks.
|
|
*/
|
|
match = cam_quirkmatch((caddr_t)&cgd->inq_data,
|
|
(caddr_t)sa_quirk_table,
|
|
sizeof(sa_quirk_table)/sizeof(*sa_quirk_table),
|
|
sizeof(*sa_quirk_table), scsi_inquiry_match);
|
|
|
|
if (match != NULL) {
|
|
softc->quirks = ((struct sa_quirk_entry *)match)->quirks;
|
|
softc->last_media_blksize =
|
|
((struct sa_quirk_entry *)match)->prefblk;
|
|
#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 media is inserted. So, set a flag to
|
|
* indicate that the blocksize is unavailable right now.
|
|
*/
|
|
softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0,
|
|
DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) |
|
|
DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE);
|
|
|
|
softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV,
|
|
periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR,
|
|
0660, "%s%d.ctl", periph->periph_name, periph->unit_number);
|
|
softc->devs.ctl_dev->si_drv1 = periph;
|
|
|
|
for (i = 0; i < SA_NUM_MODES; i++) {
|
|
|
|
softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw,
|
|
SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R),
|
|
UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d",
|
|
periph->periph_name, periph->unit_number, i);
|
|
softc->devs.mode_devs[i].r_dev->si_drv1 = periph;
|
|
|
|
softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw,
|
|
SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR),
|
|
UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d",
|
|
periph->periph_name, periph->unit_number, i);
|
|
softc->devs.mode_devs[i].nr_dev->si_drv1 = periph;
|
|
|
|
softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw,
|
|
SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER),
|
|
UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d",
|
|
periph->periph_name, periph->unit_number, i);
|
|
softc->devs.mode_devs[i].er_dev->si_drv1 = periph;
|
|
|
|
/*
|
|
* Make the (well known) aliases for the first mode.
|
|
*/
|
|
if (i == 0) {
|
|
struct cdev *alias;
|
|
|
|
alias = make_dev_alias(softc->devs.mode_devs[i].r_dev,
|
|
"%s%d", periph->periph_name, periph->unit_number);
|
|
alias->si_drv1 = periph;
|
|
alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev,
|
|
"n%s%d", periph->periph_name, periph->unit_number);
|
|
alias->si_drv1 = periph;
|
|
alias = make_dev_alias(softc->devs.mode_devs[i].er_dev,
|
|
"e%s%d", periph->periph_name, periph->unit_number);
|
|
alias->si_drv1 = periph;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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_TRACE, ("sastart\n"));
|
|
|
|
|
|
switch (softc->state) {
|
|
case SA_STATE_NORMAL:
|
|
{
|
|
/* Pull a buffer from the queue and get going on it */
|
|
struct bio *bp;
|
|
int s;
|
|
|
|
/*
|
|
* See if there is a buf with work for us to do..
|
|
*/
|
|
s = splbio();
|
|
bp = bioq_first(&softc->bio_queue);
|
|
if (periph->immediate_priority <= periph->pinfo.priority) {
|
|
CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
|
|
("queuing for immediate ccb\n"));
|
|
Set_CCB_Type(start_ccb, SA_CCB_WAITING);
|
|
SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
|
|
periph_links.sle);
|
|
periph->immediate_priority = CAM_PRIORITY_NONE;
|
|
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 bio *done_bp;
|
|
again:
|
|
softc->queue_count--;
|
|
bioq_remove(&softc->bio_queue, bp);
|
|
bp->bio_resid = bp->bio_bcount;
|
|
done_bp = bp;
|
|
if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) {
|
|
/*
|
|
* We now just clear errors in this case
|
|
* and let the residual be the notifier.
|
|
*/
|
|
bp->bio_error = 0;
|
|
} else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) {
|
|
/*
|
|
* This can only happen if we're reading
|
|
* in fixed length mode. In this case,
|
|
* we dump the rest of the list the
|
|
* same way.
|
|
*/
|
|
bp->bio_error = 0;
|
|
if (bioq_first(&softc->bio_queue) != NULL) {
|
|
biodone(done_bp);
|
|
goto again;
|
|
}
|
|
} else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) {
|
|
bp->bio_error = EIO;
|
|
bp->bio_flags |= BIO_ERROR;
|
|
}
|
|
bp = bioq_first(&softc->bio_queue);
|
|
/*
|
|
* Only if we have no other buffers queued up
|
|
* do we clear the pending error flag.
|
|
*/
|
|
if (bp == NULL)
|
|
softc->flags &= ~SA_FLAG_ERR_PENDING;
|
|
CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
|
|
("sastart- ERR_PENDING now 0x%x, bp is %sNULL, "
|
|
"%d more buffers queued up\n",
|
|
(softc->flags & SA_FLAG_ERR_PENDING),
|
|
(bp != NULL)? "not " : " ", softc->queue_count));
|
|
splx(s);
|
|
xpt_release_ccb(start_ccb);
|
|
biodone(done_bp);
|
|
} else {
|
|
u_int32_t length;
|
|
|
|
bioq_remove(&softc->bio_queue, bp);
|
|
softc->queue_count--;
|
|
|
|
if ((softc->flags & SA_FLAG_FIXED) != 0) {
|
|
if (softc->blk_shift != 0) {
|
|
length =
|
|
bp->bio_bcount >> softc->blk_shift;
|
|
} else if (softc->media_blksize != 0) {
|
|
length = bp->bio_bcount /
|
|
softc->media_blksize;
|
|
} else {
|
|
bp->bio_error = EIO;
|
|
xpt_print_path(periph->path);
|
|
printf("zero blocksize for "
|
|
"FIXED length writes?\n");
|
|
splx(s);
|
|
biodone(bp);
|
|
break;
|
|
}
|
|
#if 0
|
|
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
|
|
("issuing a %d fixed record %s\n",
|
|
length, (bp->bio_cmd == BIO_READ)? "read" :
|
|
"write"));
|
|
#endif
|
|
} else {
|
|
length = bp->bio_bcount;
|
|
#if 0
|
|
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
|
|
("issuing a %d variable byte %s\n",
|
|
length, (bp->bio_cmd == BIO_READ)? "read" :
|
|
"write"));
|
|
#endif
|
|
}
|
|
devstat_start_transaction_bio(softc->device_stats, bp);
|
|
/*
|
|
* Some people have theorized that we should
|
|
* suppress illegal length indication if we are
|
|
* running in variable block mode so that we don't
|
|
* have to request sense every time our requested
|
|
* block size is larger than the written block.
|
|
* The residual information from the ccb allows
|
|
* us to identify this situation anyway. The only
|
|
* problem with this is that we will not get
|
|
* information about blocks that are larger than
|
|
* our read buffer unless we set the block size
|
|
* in the mode page to something other than 0.
|
|
*
|
|
* I believe that this is a non-issue. If user apps
|
|
* don't adjust their read size to match our record
|
|
* size, that's just life. Anyway, the typical usage
|
|
* would be to issue, e.g., 64KB reads and occasionally
|
|
* have to do deal with 512 byte or 1KB intermediate
|
|
* records.
|
|
*/
|
|
softc->dsreg = (bp->bio_cmd == BIO_READ)?
|
|
MTIO_DSREG_RD : MTIO_DSREG_WR;
|
|
scsi_sa_read_write(&start_ccb->csio, 0, sadone,
|
|
MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ),
|
|
FALSE, (softc->flags & SA_FLAG_FIXED) != 0,
|
|
length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE,
|
|
IO_TIMEOUT);
|
|
start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED;
|
|
Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO);
|
|
start_ccb->ccb_h.ccb_bp = bp;
|
|
bp = bioq_first(&softc->bio_queue);
|
|
splx(s);
|
|
xpt_action(start_ccb);
|
|
}
|
|
|
|
if (bp != NULL) {
|
|
/* Have more work to do, so ensure we stay scheduled */
|
|
xpt_schedule(periph, 1);
|
|
}
|
|
break;
|
|
}
|
|
case SA_STATE_ABNORMAL:
|
|
default:
|
|
panic("state 0x%x in sastart", softc->state);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
sadone(struct cam_periph *periph, union ccb *done_ccb)
|
|
{
|
|
struct sa_softc *softc;
|
|
struct ccb_scsiio *csio;
|
|
|
|
softc = (struct sa_softc *)periph->softc;
|
|
csio = &done_ccb->csio;
|
|
switch (CCB_Type(csio)) {
|
|
case SA_CCB_BUFFER_IO:
|
|
{
|
|
struct bio *bp;
|
|
int error;
|
|
|
|
softc->dsreg = MTIO_DSREG_REST;
|
|
bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
|
|
error = 0;
|
|
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
|
|
if ((error = saerror(done_ccb, 0, 0)) == ERESTART) {
|
|
/*
|
|
* A retry was scheduled, so just return.
|
|
*/
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (error == EIO) {
|
|
int s;
|
|
|
|
/*
|
|
* Catastrophic error. Mark the tape as frozen
|
|
* (we no longer know tape position).
|
|
*
|
|
* Return all queued I/O with EIO, and unfreeze
|
|
* our queue so that future transactions that
|
|
* attempt to fix this problem can get to the
|
|
* device.
|
|
*
|
|
*/
|
|
|
|
s = splbio();
|
|
softc->flags |= SA_FLAG_TAPE_FROZEN;
|
|
bioq_flush(&softc->bio_queue, NULL, EIO);
|
|
splx(s);
|
|
}
|
|
if (error != 0) {
|
|
bp->bio_resid = bp->bio_bcount;
|
|
bp->bio_error = error;
|
|
bp->bio_flags |= BIO_ERROR;
|
|
/*
|
|
* In the error case, position is updated in saerror.
|
|
*/
|
|
} else {
|
|
bp->bio_resid = csio->resid;
|
|
bp->bio_error = 0;
|
|
if (csio->resid != 0) {
|
|
bp->bio_flags |= BIO_ERROR;
|
|
}
|
|
if (bp->bio_cmd == BIO_WRITE) {
|
|
softc->flags |= SA_FLAG_TAPE_WRITTEN;
|
|
softc->filemarks = 0;
|
|
}
|
|
if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) &&
|
|
(softc->blkno != (daddr_t) -1)) {
|
|
if ((softc->flags & SA_FLAG_FIXED) != 0) {
|
|
u_int32_t l;
|
|
if (softc->blk_shift != 0) {
|
|
l = bp->bio_bcount >>
|
|
softc->blk_shift;
|
|
} else {
|
|
l = bp->bio_bcount /
|
|
softc->media_blksize;
|
|
}
|
|
softc->blkno += (daddr_t) l;
|
|
} else {
|
|
softc->blkno++;
|
|
}
|
|
}
|
|
}
|
|
/*
|
|
* If we had an error (immediate or pending),
|
|
* release the device queue now.
|
|
*/
|
|
if (error || (softc->flags & SA_FLAG_ERR_PENDING))
|
|
cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0);
|
|
#ifdef CAMDEBUG
|
|
if (error || bp->bio_resid) {
|
|
CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
|
|
("error %d resid %ld count %ld\n", error,
|
|
bp->bio_resid, bp->bio_bcount));
|
|
}
|
|
#endif
|
|
biofinish(bp, softc->device_stats, 0);
|
|
break;
|
|
}
|
|
case SA_CCB_WAITING:
|
|
{
|
|
/* Caller will release the CCB */
|
|
wakeup(&done_ccb->ccb_h.cbfcnp);
|
|
return;
|
|
}
|
|
}
|
|
xpt_release_ccb(done_ccb);
|
|
}
|
|
|
|
/*
|
|
* Mount the tape (make sure it's ready for I/O).
|
|
*/
|
|
static int
|
|
samount(struct cam_periph *periph, int oflags, struct cdev *dev)
|
|
{
|
|
struct sa_softc *softc;
|
|
union ccb *ccb;
|
|
int error;
|
|
|
|
/*
|
|
* oflags can be checked for 'kind' of open (read-only check) - later
|
|
* dev can be checked for a control-mode or compression open - later
|
|
*/
|
|
UNUSED_PARAMETER(oflags);
|
|
UNUSED_PARAMETER(dev);
|
|
|
|
|
|
softc = (struct sa_softc *)periph->softc;
|
|
|
|
/*
|
|
* This should determine if something has happend since the last
|
|
* open/mount that would invalidate the mount. We do *not* want
|
|
* to retry this command- we just want the status. But we only
|
|
* do this if we're mounted already- if we're not mounted,
|
|
* we don't care about the unit read state and can instead use
|
|
* this opportunity to attempt to reserve the tape unit.
|
|
*/
|
|
|
|
if (softc->flags & SA_FLAG_TAPE_MOUNTED) {
|
|
ccb = cam_periph_getccb(periph, 1);
|
|
scsi_test_unit_ready(&ccb->csio, 0, sadone,
|
|
MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
|
|
error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
|
|
softc->device_stats);
|
|
QFRLS(ccb);
|
|
if (error == ENXIO) {
|
|
softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
|
|
scsi_test_unit_ready(&ccb->csio, 0, sadone,
|
|
MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
|
|
error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
|
|
softc->device_stats);
|
|
QFRLS(ccb);
|
|
} else if (error) {
|
|
/*
|
|
* We don't need to freeze the tape because we
|
|
* will now attempt to rewind/load it.
|
|
*/
|
|
softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
|
|
if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
|
|
xpt_print_path(periph->path);
|
|
printf("error %d on TUR in samount\n", error);
|
|
}
|
|
}
|
|
} else {
|
|
error = sareservereleaseunit(periph, TRUE);
|
|
if (error) {
|
|
return (error);
|
|
}
|
|
ccb = cam_periph_getccb(periph, 1);
|
|
scsi_test_unit_ready(&ccb->csio, 0, sadone,
|
|
MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
|
|
error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
|
|
softc->device_stats);
|
|
QFRLS(ccb);
|
|
}
|
|
|
|
if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
|
|
struct scsi_read_block_limits_data *rblim = NULL;
|
|
int comp_enabled, comp_supported;
|
|
u_int8_t write_protect, guessing = 0;
|
|
|
|
/*
|
|
* Clear out old state.
|
|
*/
|
|
softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN|
|
|
SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED|
|
|
SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP);
|
|
softc->filemarks = 0;
|
|
|
|
/*
|
|
* *Very* first off, make sure we're loaded to BOT.
|
|
*/
|
|
scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
|
|
FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT);
|
|
error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
|
|
softc->device_stats);
|
|
QFRLS(ccb);
|
|
|
|
/*
|
|
* In case this doesn't work, do a REWIND instead
|
|
*/
|
|
if (error) {
|
|
scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
|
|
FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
|
|
error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
|
|
softc->device_stats);
|
|
QFRLS(ccb);
|
|
}
|
|
if (error) {
|
|
xpt_release_ccb(ccb);
|
|
goto exit;
|
|
}
|
|
|
|
/*
|
|
* Do a dummy test read to force access to the
|
|
* media so that the drive will really know what's
|
|
* there. We actually don't really care what the
|
|
* blocksize on tape is and don't expect to really
|
|
* read a full record.
|
|
*/
|
|
rblim = (struct scsi_read_block_limits_data *)
|
|
malloc(8192, M_TEMP, M_WAITOK);
|
|
if (rblim == NULL) {
|
|
xpt_print_path(periph->path);
|
|
printf("no memory for test read\n");
|
|
xpt_release_ccb(ccb);
|
|
error = ENOMEM;
|
|
goto exit;
|
|
}
|
|
|
|
if ((softc->quirks & SA_QUIRK_NODREAD) == 0) {
|
|
scsi_sa_read_write(&ccb->csio, 0, sadone,
|
|
MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192,
|
|
(void *) rblim, 8192, SSD_FULL_SIZE,
|
|
IO_TIMEOUT);
|
|
(void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
|
|
softc->device_stats);
|
|
QFRLS(ccb);
|
|
scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
|
|
FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
|
|
error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO,
|
|
SF_NO_PRINT | SF_RETRY_UA,
|
|
softc->device_stats);
|
|
QFRLS(ccb);
|
|
if (error) {
|
|
xpt_print_path(periph->path);
|
|
printf("unable to rewind after test read\n");
|
|
xpt_release_ccb(ccb);
|
|
goto exit;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Next off, determine block limits.
|
|
*/
|
|
scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
|
|
rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
|
|
|
|
error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO,
|
|
SF_NO_PRINT | SF_RETRY_UA, softc->device_stats);
|
|
|
|
QFRLS(ccb);
|
|
xpt_release_ccb(ccb);
|
|
|
|
if (error != 0) {
|
|
/*
|
|
* If it's less than SCSI-2, READ BLOCK LIMITS is not
|
|
* a MANDATORY command. Anyway- it doesn't matter-
|
|
* we can proceed anyway.
|
|
*/
|
|
softc->blk_gran = 0;
|
|
softc->max_blk = ~0;
|
|
softc->min_blk = 0;
|
|
} else {
|
|
if (softc->scsi_rev >= SCSI_REV_SPC) {
|
|
softc->blk_gran = RBL_GRAN(rblim);
|
|
} else {
|
|
softc->blk_gran = 0;
|
|
}
|
|
/*
|
|
* We take max_blk == min_blk to mean a default to
|
|
* fixed mode- but note that whatever we get out of
|
|
* sagetparams below will actually determine whether
|
|
* we are actually *in* fixed mode.
|
|
*/
|
|
softc->max_blk = scsi_3btoul(rblim->maximum);
|
|
softc->min_blk = scsi_2btoul(rblim->minimum);
|
|
|
|
|
|
}
|
|
/*
|
|
* Next, perform a mode sense to determine
|
|
* current density, blocksize, compression etc.
|
|
*/
|
|
error = sagetparams(periph, SA_PARAM_ALL,
|
|
&softc->media_blksize,
|
|
&softc->media_density,
|
|
&softc->media_numblks,
|
|
&softc->buffer_mode, &write_protect,
|
|
&softc->speed, &comp_supported,
|
|
&comp_enabled, &softc->comp_algorithm,
|
|
NULL);
|
|
|
|
if (error != 0) {
|
|
/*
|
|
* We could work a little harder here. We could
|
|
* adjust our attempts to get information. It
|
|
* might be an ancient tape drive. If someone
|
|
* nudges us, we'll do that.
|
|
*/
|
|
goto exit;
|
|
}
|
|
|
|
/*
|
|
* If no quirk has determined that this is a device that is
|
|
* preferred to be in fixed or variable mode, now is the time
|
|
* to find out.
|
|
*/
|
|
if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) {
|
|
guessing = 1;
|
|
/*
|
|
* This could be expensive to find out. Luckily we
|
|
* only need to do this once. If we start out in
|
|
* 'default' mode, try and set ourselves to one
|
|
* of the densities that would determine a wad
|
|
* of other stuff. Go from highest to lowest.
|
|
*/
|
|
if (softc->media_density == SCSI_DEFAULT_DENSITY) {
|
|
int i;
|
|
static u_int8_t ctry[] = {
|
|
SCSI_DENSITY_HALFINCH_PE,
|
|
SCSI_DENSITY_HALFINCH_6250C,
|
|
SCSI_DENSITY_HALFINCH_6250,
|
|
SCSI_DENSITY_HALFINCH_1600,
|
|
SCSI_DENSITY_HALFINCH_800,
|
|
SCSI_DENSITY_QIC_4GB,
|
|
SCSI_DENSITY_QIC_2GB,
|
|
SCSI_DENSITY_QIC_525_320,
|
|
SCSI_DENSITY_QIC_150,
|
|
SCSI_DENSITY_QIC_120,
|
|
SCSI_DENSITY_QIC_24,
|
|
SCSI_DENSITY_QIC_11_9TRK,
|
|
SCSI_DENSITY_QIC_11_4TRK,
|
|
SCSI_DENSITY_QIC_1320,
|
|
SCSI_DENSITY_QIC_3080,
|
|
0
|
|
};
|
|
for (i = 0; ctry[i]; i++) {
|
|
error = sasetparams(periph,
|
|
SA_PARAM_DENSITY, 0, ctry[i],
|
|
0, SF_NO_PRINT);
|
|
if (error == 0) {
|
|
softc->media_density = ctry[i];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
switch (softc->media_density) {
|
|
case SCSI_DENSITY_QIC_11_4TRK:
|
|
case SCSI_DENSITY_QIC_11_9TRK:
|
|
case SCSI_DENSITY_QIC_24:
|
|
case SCSI_DENSITY_QIC_120:
|
|
case SCSI_DENSITY_QIC_150:
|
|
case SCSI_DENSITY_QIC_525_320:
|
|
case SCSI_DENSITY_QIC_1320:
|
|
case SCSI_DENSITY_QIC_3080:
|
|
softc->quirks &= ~SA_QUIRK_2FM;
|
|
softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
|
|
softc->last_media_blksize = 512;
|
|
break;
|
|
case SCSI_DENSITY_QIC_4GB:
|
|
case SCSI_DENSITY_QIC_2GB:
|
|
softc->quirks &= ~SA_QUIRK_2FM;
|
|
softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
|
|
softc->last_media_blksize = 1024;
|
|
break;
|
|
default:
|
|
softc->last_media_blksize =
|
|
softc->media_blksize;
|
|
softc->quirks |= SA_QUIRK_VARIABLE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If no quirk has determined that this is a device that needs
|
|
* to have 2 Filemarks at EOD, now is the time to find out.
|
|
*/
|
|
|
|
if ((softc->quirks & SA_QUIRK_2FM) == 0) {
|
|
switch (softc->media_density) {
|
|
case SCSI_DENSITY_HALFINCH_800:
|
|
case SCSI_DENSITY_HALFINCH_1600:
|
|
case SCSI_DENSITY_HALFINCH_6250:
|
|
case SCSI_DENSITY_HALFINCH_6250C:
|
|
case SCSI_DENSITY_HALFINCH_PE:
|
|
softc->quirks &= ~SA_QUIRK_1FM;
|
|
softc->quirks |= SA_QUIRK_2FM;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Now validate that some info we got makes sense.
|
|
*/
|
|
if ((softc->max_blk < softc->media_blksize) ||
|
|
(softc->min_blk > softc->media_blksize &&
|
|
softc->media_blksize)) {
|
|
xpt_print_path(periph->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->quirks & SA_QUIRK_NO_MODESEL) == 0 &&
|
|
(softc->media_blksize != softc->last_media_blksize)) {
|
|
softc->media_blksize = softc->last_media_blksize;
|
|
if (softc->media_blksize == 0) {
|
|
softc->media_blksize = 512;
|
|
if (softc->media_blksize < softc->min_blk) {
|
|
softc->media_blksize = softc->min_blk;
|
|
}
|
|
}
|
|
error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
|
|
softc->media_blksize, 0, 0, SF_NO_PRINT);
|
|
if (error) {
|
|
xpt_print_path(periph->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(periph->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_SUPP;
|
|
if (comp_enabled)
|
|
softc->flags |= SA_FLAG_COMP_ENABLED;
|
|
} else
|
|
softc->flags |= SA_FLAG_COMP_UNSUPP;
|
|
|
|
if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) &&
|
|
(softc->quirks & SA_QUIRK_NO_MODESEL) == 0) {
|
|
error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0,
|
|
0, 0, SF_NO_PRINT);
|
|
if (error == 0) {
|
|
softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF;
|
|
} else {
|
|
xpt_print_path(periph->path);
|
|
printf("unable to set buffered mode\n");
|
|
}
|
|
error = 0; /* not an error */
|
|
}
|
|
|
|
|
|
if (error == 0) {
|
|
softc->flags |= SA_FLAG_TAPE_MOUNTED;
|
|
}
|
|
exit:
|
|
if (rblim != NULL)
|
|
free(rblim, M_TEMP);
|
|
|
|
if (error != 0) {
|
|
softc->dsreg = MTIO_DSREG_NIL;
|
|
} else {
|
|
softc->fileno = softc->blkno = 0;
|
|
softc->dsreg = MTIO_DSREG_REST;
|
|
}
|
|
#ifdef SA_1FM_AT_EOD
|
|
if ((softc->quirks & SA_QUIRK_2FM) == 0)
|
|
softc->quirks |= SA_QUIRK_1FM;
|
|
#else
|
|
if ((softc->quirks & SA_QUIRK_1FM) == 0)
|
|
softc->quirks |= SA_QUIRK_2FM;
|
|
#endif
|
|
} else
|
|
xpt_release_ccb(ccb);
|
|
|
|
/*
|
|
* If we return an error, we're not mounted any more,
|
|
* so release any device reservation.
|
|
*/
|
|
if (error != 0) {
|
|
(void) sareservereleaseunit(periph, FALSE);
|
|
} else {
|
|
/*
|
|
* Clear I/O residual.
|
|
*/
|
|
softc->last_io_resid = 0;
|
|
softc->last_ctl_resid = 0;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* How many filemarks do we need to write if we were to terminate the
|
|
* tape session right now? Note that this can be a negative number
|
|
*/
|
|
|
|
static int
|
|
samarkswanted(struct cam_periph *periph)
|
|
{
|
|
int markswanted;
|
|
struct sa_softc *softc;
|
|
|
|
softc = (struct sa_softc *)periph->softc;
|
|
markswanted = 0;
|
|
if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) {
|
|
markswanted++;
|
|
if (softc->quirks & SA_QUIRK_2FM)
|
|
markswanted++;
|
|
}
|
|
markswanted -= softc->filemarks;
|
|
return (markswanted);
|
|
}
|
|
|
|
static int
|
|
sacheckeod(struct cam_periph *periph)
|
|
{
|
|
int error;
|
|
int markswanted;
|
|
|
|
markswanted = samarkswanted(periph);
|
|
|
|
if (markswanted > 0) {
|
|
error = sawritefilemarks(periph, markswanted, FALSE);
|
|
} else {
|
|
error = 0;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs)
|
|
{
|
|
static const char *toobig =
|
|
"%d-byte tape record bigger than supplied buffer\n";
|
|
struct cam_periph *periph;
|
|
struct sa_softc *softc;
|
|
struct ccb_scsiio *csio;
|
|
struct scsi_sense_data *sense;
|
|
u_int32_t resid = 0;
|
|
int32_t info = 0;
|
|
cam_status status;
|
|
int error_code, sense_key, asc, ascq, error, aqvalid;
|
|
|
|
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);
|
|
aqvalid = sense->extra_len >= 6;
|
|
error = 0;
|
|
|
|
status = csio->ccb_h.status & CAM_STATUS_MASK;
|
|
|
|
/*
|
|
* Calculate/latch up, any residuals... We do this in a funny 2-step
|
|
* so we can print stuff here if we have CAM_DEBUG enabled for this
|
|
* unit.
|
|
*/
|
|
if (status == CAM_SCSI_STATUS_ERROR) {
|
|
if ((sense->error_code & SSD_ERRCODE_VALID) != 0) {
|
|
info = (int32_t) 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 (CCB_Type(csio) == SA_CCB_BUFFER_IO) {
|
|
bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense,
|
|
sizeof (struct scsi_sense_data));
|
|
bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb,
|
|
(int) csio->cdb_len);
|
|
softc->last_io_resid = resid;
|
|
softc->last_resid_was_io = 1;
|
|
} else {
|
|
bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense,
|
|
sizeof (struct scsi_sense_data));
|
|
bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb,
|
|
(int) csio->cdb_len);
|
|
softc->last_ctl_resid = resid;
|
|
softc->last_resid_was_io = 0;
|
|
}
|
|
CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x "
|
|
"ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d "
|
|
"dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff,
|
|
sense_key, asc, ascq, status,
|
|
sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len));
|
|
} else {
|
|
CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
|
|
("Cam Status 0x%x\n", status));
|
|
}
|
|
|
|
switch (status) {
|
|
case CAM_REQ_CMP:
|
|
return (0);
|
|
case CAM_SCSI_STATUS_ERROR:
|
|
/*
|
|
* If a read/write command, we handle it here.
|
|
*/
|
|
if (CCB_Type(csio) != SA_CCB_WAITING) {
|
|
break;
|
|
}
|
|
/*
|
|
* If this was just EOM/EOP, Filemark, Setmark or ILI detected
|
|
* on a non read/write command, we assume it's not an error
|
|
* and propagate the residule and return.
|
|
*/
|
|
if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) ||
|
|
(aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) {
|
|
csio->resid = resid;
|
|
QFRLS(ccb);
|
|
return (0);
|
|
}
|
|
/*
|
|
* Otherwise, we let the common code handle this.
|
|
*/
|
|
return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
|
|
|
|
/*
|
|
* XXX: To Be Fixed
|
|
* We cannot depend upon CAM honoring retry counts for these.
|
|
*/
|
|
case CAM_SCSI_BUS_RESET:
|
|
case CAM_BDR_SENT:
|
|
if (ccb->ccb_h.retry_count <= 0) {
|
|
return (EIO);
|
|
}
|
|
/* FALLTHROUGH */
|
|
default:
|
|
return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
|
|
}
|
|
|
|
/*
|
|
* Handle filemark, end of tape, mismatched record sizes....
|
|
* From this point out, we're only handling read/write cases.
|
|
* Handle writes && reads differently.
|
|
*/
|
|
|
|
if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) {
|
|
if (sense_key == SSD_KEY_VOLUME_OVERFLOW) {
|
|
csio->resid = resid;
|
|
error = ENOSPC;
|
|
} else if (sense->flags & SSD_EOM) {
|
|
softc->flags |= SA_FLAG_EOM_PENDING;
|
|
/*
|
|
* Grotesque as it seems, the few times
|
|
* I've actually seen a non-zero resid,
|
|
* the tape drive actually lied and had
|
|
* written all the data!.
|
|
*/
|
|
csio->resid = 0;
|
|
}
|
|
} else {
|
|
csio->resid = resid;
|
|
if (sense_key == SSD_KEY_BLANK_CHECK) {
|
|
if (softc->quirks & SA_QUIRK_1FM) {
|
|
error = 0;
|
|
softc->flags |= SA_FLAG_EOM_PENDING;
|
|
} else {
|
|
error = EIO;
|
|
}
|
|
} else if (sense->flags & SSD_FILEMARK) {
|
|
if (softc->flags & SA_FLAG_FIXED) {
|
|
error = -1;
|
|
softc->flags |= SA_FLAG_EOF_PENDING;
|
|
}
|
|
/*
|
|
* Unconditionally, if we detected a filemark on a read,
|
|
* mark that we've run moved a file ahead.
|
|
*/
|
|
if (softc->fileno != (daddr_t) -1) {
|
|
softc->fileno++;
|
|
softc->blkno = 0;
|
|
csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Incorrect Length usually applies to read, but can apply to writes.
|
|
*/
|
|
if (error == 0 && (sense->flags & SSD_ILI)) {
|
|
if (info < 0) {
|
|
xpt_print_path(csio->ccb_h.path);
|
|
printf(toobig, csio->dxfer_len - info);
|
|
csio->resid = csio->dxfer_len;
|
|
error = EIO;
|
|
} else {
|
|
csio->resid = resid;
|
|
if (softc->flags & SA_FLAG_FIXED) {
|
|
softc->flags |= SA_FLAG_EIO_PENDING;
|
|
}
|
|
/*
|
|
* Bump the block number if we hadn't seen a filemark.
|
|
* Do this independent of errors (we've moved anyway).
|
|
*/
|
|
if ((sense->flags & SSD_FILEMARK) == 0) {
|
|
if (softc->blkno != (daddr_t) -1) {
|
|
softc->blkno++;
|
|
csio->ccb_h.ccb_pflags |=
|
|
SA_POSITION_UPDATED;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (error <= 0) {
|
|
/*
|
|
* Unfreeze the queue if frozen as we're not returning anything
|
|
* to our waiters that would indicate an I/O error has occurred
|
|
* (yet).
|
|
*/
|
|
QFRLS(ccb);
|
|
error = 0;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
sagetparams(struct cam_periph *periph, sa_params params_to_get,
|
|
u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks,
|
|
int *buff_mode, u_int8_t *write_protect, u_int8_t *speed,
|
|
int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm,
|
|
sa_comp_t *tcs)
|
|
{
|
|
union ccb *ccb;
|
|
void *mode_buffer;
|
|
struct scsi_mode_header_6 *mode_hdr;
|
|
struct scsi_mode_blk_desc *mode_blk;
|
|
int mode_buffer_len;
|
|
struct sa_softc *softc;
|
|
u_int8_t cpage;
|
|
int error;
|
|
cam_status status;
|
|
|
|
softc = (struct sa_softc *)periph->softc;
|
|
ccb = cam_periph_getccb(periph, 1);
|
|
if (softc->quirks & SA_QUIRK_NO_CPAGE)
|
|
cpage = SA_DEVICE_CONFIGURATION_PAGE;
|
|
else
|
|
cpage = SA_DATA_COMPRESSION_PAGE;
|
|
|
|
retry:
|
|
mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
|
|
|
|
if (params_to_get & SA_PARAM_COMPRESSION) {
|
|
if (softc->quirks & SA_QUIRK_NOCOMP) {
|
|
*comp_supported = FALSE;
|
|
params_to_get &= ~SA_PARAM_COMPRESSION;
|
|
} else
|
|
mode_buffer_len += sizeof (sa_comp_t);
|
|
}
|
|
|
|
mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK | M_ZERO);
|
|
mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
|
|
mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
|
|
|
|
/* it is safe to retry this */
|
|
scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
|
|
SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ?
|
|
cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len,
|
|
SSD_FULL_SIZE, SCSIOP_TIMEOUT);
|
|
|
|
error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
|
|
softc->device_stats);
|
|
QFRLS(ccb);
|
|
|
|
status = ccb->ccb_h.status & CAM_STATUS_MASK;
|
|
|
|
if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) {
|
|
/*
|
|
* Hmm. Let's see if we can try another page...
|
|
* If we've already done that, give up on compression
|
|
* for this device and remember this for the future
|
|
* and attempt the request without asking for compression
|
|
* info.
|
|
*/
|
|
if (cpage == SA_DATA_COMPRESSION_PAGE) {
|
|
cpage = SA_DEVICE_CONFIGURATION_PAGE;
|
|
goto retry;
|
|
}
|
|
softc->quirks |= SA_QUIRK_NOCOMP;
|
|
free(mode_buffer, M_TEMP);
|
|
goto retry;
|
|
} else if (status == CAM_SCSI_STATUS_ERROR) {
|
|
/* Tell the user about the fatal error. */
|
|
scsi_sense_print(&ccb->csio);
|
|
goto sagetparamsexit;
|
|
}
|
|
|
|
/*
|
|
* If the user only wants the compression information, and
|
|
* the device doesn't send back the block descriptor, it's
|
|
* no big deal. If the user wants more than just
|
|
* compression, though, and the device doesn't pass back the
|
|
* block descriptor, we need to send another mode sense to
|
|
* get the block descriptor.
|
|
*/
|
|
if ((mode_hdr->blk_desc_len == 0) &&
|
|
(params_to_get & SA_PARAM_COMPRESSION) &&
|
|
(params_to_get & ~(SA_PARAM_COMPRESSION))) {
|
|
|
|
/*
|
|
* Decrease the mode buffer length by the size of
|
|
* the compression page, to make sure the data
|
|
* there doesn't get overwritten.
|
|
*/
|
|
mode_buffer_len -= sizeof (sa_comp_t);
|
|
|
|
/*
|
|
* Now move the compression page that we presumably
|
|
* got back down the memory chunk a little bit so
|
|
* it doesn't get spammed.
|
|
*/
|
|
bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t));
|
|
bzero(&mode_hdr[0], sizeof (mode_hdr[0]));
|
|
|
|
/*
|
|
* Now, we issue another mode sense and just ask
|
|
* for the block descriptor, etc.
|
|
*/
|
|
|
|
scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
|
|
SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE,
|
|
mode_buffer, mode_buffer_len, SSD_FULL_SIZE,
|
|
SCSIOP_TIMEOUT);
|
|
|
|
error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
|
|
softc->device_stats);
|
|
QFRLS(ccb);
|
|
|
|
if (error != 0)
|
|
goto sagetparamsexit;
|
|
}
|
|
|
|
if (params_to_get & SA_PARAM_BLOCKSIZE)
|
|
*blocksize = scsi_3btoul(mode_blk->blklen);
|
|
|
|
if (params_to_get & SA_PARAM_NUMBLOCKS)
|
|
*numblocks = scsi_3btoul(mode_blk->nblocks);
|
|
|
|
if (params_to_get & SA_PARAM_BUFF_MODE)
|
|
*buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK;
|
|
|
|
if (params_to_get & SA_PARAM_DENSITY)
|
|
*density = mode_blk->density;
|
|
|
|
if (params_to_get & SA_PARAM_WP)
|
|
*write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE;
|
|
|
|
if (params_to_get & SA_PARAM_SPEED)
|
|
*speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK;
|
|
|
|
if (params_to_get & SA_PARAM_COMPRESSION) {
|
|
sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1];
|
|
if (cpage == SA_DATA_COMPRESSION_PAGE) {
|
|
struct scsi_data_compression_page *cp = &ntcs->dcomp;
|
|
*comp_supported =
|
|
(cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE;
|
|
*comp_enabled =
|
|
(cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE;
|
|
*comp_algorithm = scsi_4btoul(cp->comp_algorithm);
|
|
} else {
|
|
struct scsi_dev_conf_page *cp = &ntcs->dconf;
|
|
/*
|
|
* We don't really know whether this device supports
|
|
* Data Compression if the the algorithm field is
|
|
* zero. Just say we do.
|
|
*/
|
|
*comp_supported = TRUE;
|
|
*comp_enabled =
|
|
(cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE;
|
|
*comp_algorithm = cp->sel_comp_alg;
|
|
}
|
|
if (tcs != NULL)
|
|
bcopy(ntcs, tcs, sizeof (sa_comp_t));
|
|
}
|
|
|
|
if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
|
|
int idx;
|
|
char *xyz = mode_buffer;
|
|
xpt_print_path(periph->path);
|
|
printf("Mode Sense Data=");
|
|
for (idx = 0; idx < mode_buffer_len; idx++)
|
|
printf(" 0x%02x", xyz[idx] & 0xff);
|
|
printf("\n");
|
|
}
|
|
|
|
sagetparamsexit:
|
|
|
|
xpt_release_ccb(ccb);
|
|
free(mode_buffer, M_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 calg,
|
|
u_int32_t sense_flags)
|
|
{
|
|
struct sa_softc *softc;
|
|
u_int32_t current_blocksize;
|
|
u_int32_t current_calg;
|
|
u_int8_t current_density;
|
|
u_int8_t current_speed;
|
|
int comp_enabled, comp_supported;
|
|
void *mode_buffer;
|
|
int mode_buffer_len;
|
|
struct scsi_mode_header_6 *mode_hdr;
|
|
struct scsi_mode_blk_desc *mode_blk;
|
|
sa_comp_t *ccomp, *cpage;
|
|
int buff_mode;
|
|
union ccb *ccb = NULL;
|
|
int error;
|
|
|
|
softc = (struct sa_softc *)periph->softc;
|
|
|
|
ccomp = malloc(sizeof (sa_comp_t), M_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_calg, ccomp);
|
|
|
|
if (error != 0) {
|
|
free(ccomp, M_TEMP);
|
|
return (error);
|
|
}
|
|
|
|
mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
|
|
if (params_to_set & SA_PARAM_COMPRESSION)
|
|
mode_buffer_len += sizeof (sa_comp_t);
|
|
|
|
mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK | M_ZERO);
|
|
|
|
mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
|
|
mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
|
|
|
|
ccb = cam_periph_getccb(periph, 1);
|
|
|
|
retry:
|
|
|
|
if (params_to_set & SA_PARAM_COMPRESSION) {
|
|
if (mode_blk) {
|
|
cpage = (sa_comp_t *)&mode_blk[1];
|
|
} else {
|
|
cpage = (sa_comp_t *)&mode_hdr[1];
|
|
}
|
|
bcopy(ccomp, cpage, sizeof (sa_comp_t));
|
|
cpage->hdr.pagecode &= ~0x80;
|
|
} else
|
|
cpage = NULL;
|
|
|
|
/*
|
|
* If the caller wants us to set the blocksize, use the one they
|
|
* pass in. Otherwise, use the blocksize we got back from the
|
|
* mode select above.
|
|
*/
|
|
if (mode_blk) {
|
|
if (params_to_set & SA_PARAM_BLOCKSIZE)
|
|
scsi_ulto3b(blocksize, mode_blk->blklen);
|
|
else
|
|
scsi_ulto3b(current_blocksize, mode_blk->blklen);
|
|
|
|
/*
|
|
* Set density if requested, else preserve old density.
|
|
* SCSI_SAME_DENSITY only applies to SCSI-2 or better
|
|
* devices, else density we've latched up in our softc.
|
|
*/
|
|
if (params_to_set & SA_PARAM_DENSITY) {
|
|
mode_blk->density = density;
|
|
} else if (softc->scsi_rev > SCSI_REV_CCS) {
|
|
mode_blk->density = SCSI_SAME_DENSITY;
|
|
} else {
|
|
mode_blk->density = softc->media_density;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* For mode selects, these two fields must be zero.
|
|
*/
|
|
mode_hdr->data_length = 0;
|
|
mode_hdr->medium_type = 0;
|
|
|
|
/* set the speed to the current value */
|
|
mode_hdr->dev_spec = current_speed;
|
|
|
|
/* if set, set single-initiator buffering mode */
|
|
if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) {
|
|
mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF;
|
|
}
|
|
|
|
if (mode_blk)
|
|
mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc);
|
|
else
|
|
mode_hdr->blk_desc_len = 0;
|
|
|
|
/*
|
|
* First, if the user wants us to set the compression algorithm or
|
|
* just turn compression on, check to make sure that this drive
|
|
* supports compression.
|
|
*/
|
|
if (params_to_set & SA_PARAM_COMPRESSION) {
|
|
/*
|
|
* If the compression algorithm is 0, disable compression.
|
|
* If the compression algorithm is non-zero, enable
|
|
* compression and set the compression type to the
|
|
* specified compression algorithm, unless the algorithm is
|
|
* MT_COMP_ENABLE. In that case, we look at the
|
|
* compression algorithm that is currently set and if it is
|
|
* non-zero, we leave it as-is. If it is zero, and we have
|
|
* saved a compression algorithm from a time when
|
|
* compression was enabled before, set the compression to
|
|
* the saved value.
|
|
*/
|
|
switch (ccomp->hdr.pagecode & ~0x80) {
|
|
case SA_DEVICE_CONFIGURATION_PAGE:
|
|
{
|
|
struct scsi_dev_conf_page *dcp = &cpage->dconf;
|
|
if (calg == 0) {
|
|
dcp->sel_comp_alg = SA_COMP_NONE;
|
|
break;
|
|
}
|
|
if (calg != MT_COMP_ENABLE) {
|
|
dcp->sel_comp_alg = calg;
|
|
} else if (dcp->sel_comp_alg == SA_COMP_NONE &&
|
|
softc->saved_comp_algorithm != 0) {
|
|
dcp->sel_comp_alg = softc->saved_comp_algorithm;
|
|
}
|
|
break;
|
|
}
|
|
case SA_DATA_COMPRESSION_PAGE:
|
|
if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) {
|
|
struct scsi_data_compression_page *dcp = &cpage->dcomp;
|
|
if (calg == 0) {
|
|
/*
|
|
* Disable compression, but leave the
|
|
* decompression and the capability bit
|
|
* alone.
|
|
*/
|
|
dcp->dce_and_dcc = SA_DCP_DCC;
|
|
dcp->dde_and_red |= SA_DCP_DDE;
|
|
break;
|
|
}
|
|
/* enable compression && decompression */
|
|
dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC;
|
|
dcp->dde_and_red |= SA_DCP_DDE;
|
|
/*
|
|
* If there, use compression algorithm from caller.
|
|
* Otherwise, if there's a saved compression algorithm
|
|
* and there is no current algorithm, use the saved
|
|
* algorithm. Else parrot back what we got and hope
|
|
* for the best.
|
|
*/
|
|
if (calg != MT_COMP_ENABLE) {
|
|
scsi_ulto4b(calg, dcp->comp_algorithm);
|
|
scsi_ulto4b(calg, dcp->decomp_algorithm);
|
|
} else if (scsi_4btoul(dcp->comp_algorithm) == 0 &&
|
|
softc->saved_comp_algorithm != 0) {
|
|
scsi_ulto4b(softc->saved_comp_algorithm,
|
|
dcp->comp_algorithm);
|
|
scsi_ulto4b(softc->saved_comp_algorithm,
|
|
dcp->decomp_algorithm);
|
|
}
|
|
break;
|
|
}
|
|
/*
|
|
* Compression does not appear to be supported-
|
|
* at least via the DATA COMPRESSION page. It
|
|
* would be too much to ask us to believe that
|
|
* the page itself is supported, but incorrectly
|
|
* reports an ability to manipulate data compression,
|
|
* so we'll assume that this device doesn't support
|
|
* compression. We can just fall through for that.
|
|
*/
|
|
/* FALLTHROUGH */
|
|
default:
|
|
/*
|
|
* The drive doesn't seem to support compression,
|
|
* so turn off the set compression bit.
|
|
*/
|
|
params_to_set &= ~SA_PARAM_COMPRESSION;
|
|
xpt_print_path(periph->path);
|
|
printf("device does not seem to support compression\n");
|
|
|
|
/*
|
|
* If that was the only thing the user wanted us to set,
|
|
* clean up allocated resources and return with
|
|
* 'operation not supported'.
|
|
*/
|
|
if (params_to_set == SA_PARAM_NONE) {
|
|
free(mode_buffer, M_TEMP);
|
|
xpt_release_ccb(ccb);
|
|
return (ENODEV);
|
|
}
|
|
|
|
/*
|
|
* That wasn't the only thing the user wanted us to set.
|
|
* So, decrease the stated mode buffer length by the
|
|
* size of the compression mode page.
|
|
*/
|
|
mode_buffer_len -= sizeof(sa_comp_t);
|
|
}
|
|
}
|
|
|
|
/* It is safe to retry this operation */
|
|
scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
|
|
(params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE,
|
|
FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
|
|
|
|
error = cam_periph_runccb(ccb, saerror, 0,
|
|
sense_flags, softc->device_stats);
|
|
QFRLS(ccb);
|
|
|
|
if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
|
|
int idx;
|
|
char *xyz = mode_buffer;
|
|
xpt_print_path(periph->path);
|
|
printf("Err%d, Mode Select Data=", error);
|
|
for (idx = 0; idx < mode_buffer_len; idx++)
|
|
printf(" 0x%02x", xyz[idx] & 0xff);
|
|
printf("\n");
|
|
}
|
|
|
|
|
|
if (error) {
|
|
/*
|
|
* If we can, try without setting density/blocksize.
|
|
*/
|
|
if (mode_blk) {
|
|
if ((params_to_set &
|
|
(SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) {
|
|
mode_blk = NULL;
|
|
goto retry;
|
|
}
|
|
} else {
|
|
mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
|
|
cpage = (sa_comp_t *)&mode_blk[1];
|
|
}
|
|
|
|
/*
|
|
* If we were setting the blocksize, and that failed, we
|
|
* want to set it to its original value. If we weren't
|
|
* setting the blocksize, we don't want to change it.
|
|
*/
|
|
scsi_ulto3b(current_blocksize, mode_blk->blklen);
|
|
|
|
/*
|
|
* Set density if requested, else preserve old density.
|
|
* SCSI_SAME_DENSITY only applies to SCSI-2 or better
|
|
* devices, else density we've latched up in our softc.
|
|
*/
|
|
if (params_to_set & SA_PARAM_DENSITY) {
|
|
mode_blk->density = current_density;
|
|
} else if (softc->scsi_rev > SCSI_REV_CCS) {
|
|
mode_blk->density = SCSI_SAME_DENSITY;
|
|
} else {
|
|
mode_blk->density = softc->media_density;
|
|
}
|
|
|
|
if (params_to_set & SA_PARAM_COMPRESSION)
|
|
bcopy(ccomp, cpage, sizeof (sa_comp_t));
|
|
|
|
/*
|
|
* The retry count is the only CCB field that might have been
|
|
* changed that we care about, so reset it back to 1.
|
|
*/
|
|
ccb->ccb_h.retry_count = 1;
|
|
cam_periph_runccb(ccb, saerror, 0, sense_flags,
|
|
softc->device_stats);
|
|
QFRLS(ccb);
|
|
}
|
|
|
|
xpt_release_ccb(ccb);
|
|
|
|
if (ccomp != NULL)
|
|
free(ccomp, M_TEMP);
|
|
|
|
if (params_to_set & SA_PARAM_COMPRESSION) {
|
|
if (error) {
|
|
softc->flags &= ~SA_FLAG_COMP_ENABLED;
|
|
/*
|
|
* Even if we get an error setting compression,
|
|
* do not say that we don't support it. We could
|
|
* have been wrong, or it may be media specific.
|
|
* softc->flags &= ~SA_FLAG_COMP_SUPP;
|
|
*/
|
|
softc->saved_comp_algorithm = softc->comp_algorithm;
|
|
softc->comp_algorithm = 0;
|
|
} else {
|
|
softc->flags |= SA_FLAG_COMP_ENABLED;
|
|
softc->comp_algorithm = calg;
|
|
}
|
|
}
|
|
|
|
free(mode_buffer, M_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;
|
|
|
|
/*
|
|
* We can be quiet about illegal requests.
|
|
*/
|
|
if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
|
|
sf = 0;
|
|
} else
|
|
sf = SF_QUIET_IR;
|
|
|
|
ccb = cam_periph_getccb(periph, 1);
|
|
|
|
/* It is safe to retry this operation */
|
|
scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action,
|
|
SSD_FULL_SIZE, SCSIOP_TIMEOUT);
|
|
|
|
error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats);
|
|
QFRLS(ccb);
|
|
if (error == 0) {
|
|
if (action == PR_ALLOW)
|
|
softc->flags &= ~SA_FLAG_TAPE_LOCKED;
|
|
else
|
|
softc->flags |= SA_FLAG_TAPE_LOCKED;
|
|
}
|
|
|
|
xpt_release_ccb(ccb);
|
|
}
|
|
|
|
static int
|
|
sarewind(struct cam_periph *periph)
|
|
{
|
|
union ccb *ccb;
|
|
struct sa_softc *softc;
|
|
int error;
|
|
|
|
softc = (struct sa_softc *)periph->softc;
|
|
|
|
ccb = cam_periph_getccb(periph, 1);
|
|
|
|
/* It is safe to retry this operation */
|
|
scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
|
|
SSD_FULL_SIZE, REWIND_TIMEOUT);
|
|
|
|
softc->dsreg = MTIO_DSREG_REW;
|
|
error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
|
|
softc->dsreg = MTIO_DSREG_REST;
|
|
|
|
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, 1);
|
|
|
|
/* This cannot be retried */
|
|
|
|
scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count,
|
|
SSD_FULL_SIZE, SPACE_TIMEOUT);
|
|
|
|
/*
|
|
* Clear residual because we will be using it.
|
|
*/
|
|
softc->last_ctl_resid = 0;
|
|
|
|
softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD;
|
|
error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
|
|
softc->dsreg = MTIO_DSREG_REST;
|
|
|
|
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.
|
|
*
|
|
* If the spacing operations was spacing files in reverse, we
|
|
* take account of the residual, but still check against less
|
|
* than zero- if we've gone negative, we must have hit BOT.
|
|
*
|
|
* If the spacing operations was spacing records in reverse and
|
|
* we have a residual, we've either hit BOT or hit a filemark.
|
|
* In the former case, we know our new record number (0). In
|
|
* the latter case, we have absolutely no idea what the real
|
|
* record number is- we've stopped between the end of the last
|
|
* record in the previous file and the filemark that stopped
|
|
* our spacing backwards.
|
|
*/
|
|
if (error) {
|
|
softc->fileno = softc->blkno = (daddr_t) -1;
|
|
} else if (code == SS_SETMARKS || code == SS_EOD) {
|
|
softc->fileno = softc->blkno = (daddr_t) -1;
|
|
} else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) {
|
|
softc->fileno += (count - softc->last_ctl_resid);
|
|
if (softc->fileno < 0) /* we must of hit BOT */
|
|
softc->fileno = 0;
|
|
softc->blkno = 0;
|
|
} else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) {
|
|
softc->blkno += (count - softc->last_ctl_resid);
|
|
if (count < 0) {
|
|
if (softc->last_ctl_resid || softc->blkno < 0) {
|
|
if (softc->fileno == 0) {
|
|
softc->blkno = 0;
|
|
} else {
|
|
softc->blkno = (daddr_t) -1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks)
|
|
{
|
|
union ccb *ccb;
|
|
struct sa_softc *softc;
|
|
int error, nwm = 0;
|
|
|
|
softc = (struct sa_softc *)periph->softc;
|
|
|
|
ccb = cam_periph_getccb(periph, 1);
|
|
/*
|
|
* Clear residual because we will be using it.
|
|
*/
|
|
softc->last_ctl_resid = 0;
|
|
|
|
softc->dsreg = MTIO_DSREG_FMK;
|
|
/* this *must* not be retried */
|
|
scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG,
|
|
FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT);
|
|
softc->dsreg = MTIO_DSREG_REST;
|
|
|
|
|
|
error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
|
|
|
|
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
|
|
cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
|
|
|
|
if (error == 0 && nmarks) {
|
|
struct sa_softc *softc = (struct sa_softc *)periph->softc;
|
|
nwm = nmarks - softc->last_ctl_resid;
|
|
softc->filemarks += nwm;
|
|
}
|
|
|
|
xpt_release_ccb(ccb);
|
|
|
|
/*
|
|
* Update relative positions (if we're doing that).
|
|
*/
|
|
if (error) {
|
|
softc->fileno = softc->blkno = (daddr_t) -1;
|
|
} else if (softc->fileno != (daddr_t) -1) {
|
|
softc->fileno += nwm;
|
|
softc->blkno = 0;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
|
|
{
|
|
struct scsi_tape_position_data loc;
|
|
union ccb *ccb;
|
|
struct sa_softc *softc = (struct sa_softc *)periph->softc;
|
|
int error;
|
|
|
|
/*
|
|
* We try and flush any buffered writes here if we were writing
|
|
* and we're trying to get hardware block position. It eats
|
|
* up performance substantially, but I'm wary of drive firmware.
|
|
*
|
|
* I think that *logical* block position is probably okay-
|
|
* but hardware block position might have to wait for data
|
|
* to hit media to be valid. Caveat Emptor.
|
|
*/
|
|
|
|
if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) {
|
|
error = sawritefilemarks(periph, 0, 0);
|
|
if (error && error != EACCES)
|
|
return (error);
|
|
}
|
|
|
|
ccb = cam_periph_getccb(periph, 1);
|
|
scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
|
|
hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
|
|
softc->dsreg = MTIO_DSREG_RBSY;
|
|
error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
|
|
softc->dsreg = MTIO_DSREG_REST;
|
|
if ((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;
|
|
|
|
/*
|
|
* We used to try and flush any buffered writes here.
|
|
* Now we push this onto user applications to either
|
|
* flush the pending writes themselves (via a zero count
|
|
* WRITE FILEMARKS command) or they can trust their tape
|
|
* drive to do this correctly for them.
|
|
*/
|
|
|
|
softc = (struct sa_softc *)periph->softc;
|
|
ccb = cam_periph_getccb(periph, 1);
|
|
|
|
|
|
scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
|
|
hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT);
|
|
|
|
|
|
softc->dsreg = MTIO_DSREG_POS;
|
|
error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
|
|
softc->dsreg = MTIO_DSREG_REST;
|
|
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 as now unknown.
|
|
*/
|
|
softc->fileno = softc->blkno = (daddr_t) -1;
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
saretension(struct cam_periph *periph)
|
|
{
|
|
union ccb *ccb;
|
|
struct sa_softc *softc;
|
|
int error;
|
|
|
|
softc = (struct sa_softc *)periph->softc;
|
|
|
|
ccb = cam_periph_getccb(periph, 1);
|
|
|
|
/* It is safe to retry this operation */
|
|
scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
|
|
FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT);
|
|
|
|
softc->dsreg = MTIO_DSREG_TEN;
|
|
error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
|
|
softc->dsreg = MTIO_DSREG_REST;
|
|
|
|
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;
|
|
|
|
softc = (struct sa_softc *)periph->softc;
|
|
ccb = cam_periph_getccb(periph, 1);
|
|
|
|
/* It is safe to retry this operation */
|
|
scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
|
|
FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve);
|
|
softc->dsreg = MTIO_DSREG_RBSY;
|
|
error = cam_periph_runccb(ccb, saerror, 0,
|
|
SF_RETRY_UA | SF_NO_PRINT, softc->device_stats);
|
|
softc->dsreg = MTIO_DSREG_REST;
|
|
QFRLS(ccb);
|
|
xpt_release_ccb(ccb);
|
|
|
|
/*
|
|
* If the error was Illegal Request, then the device doesn't support
|
|
* RESERVE/RELEASE. This is not an error.
|
|
*/
|
|
if (error == EINVAL) {
|
|
error = 0;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
saloadunload(struct cam_periph *periph, int load)
|
|
{
|
|
union ccb *ccb;
|
|
struct sa_softc *softc;
|
|
int error;
|
|
|
|
softc = (struct sa_softc *)periph->softc;
|
|
|
|
ccb = cam_periph_getccb(periph, 1);
|
|
|
|
/* It is safe to retry this operation */
|
|
scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
|
|
FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT);
|
|
|
|
softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL;
|
|
error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
|
|
softc->dsreg = MTIO_DSREG_REST;
|
|
QFRLS(ccb);
|
|
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, 1);
|
|
|
|
scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase,
|
|
SSD_FULL_SIZE, ERASE_TIMEOUT);
|
|
|
|
softc->dsreg = MTIO_DSREG_ZER;
|
|
error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
|
|
softc->dsreg = MTIO_DSREG_REST;
|
|
|
|
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, CAM_DIR_IN, tag_action,
|
|
(u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len,
|
|
sizeof(*scsi_cmd), timeout);
|
|
|
|
scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes;
|
|
bzero(scsi_cmd, sizeof(*scsi_cmd));
|
|
scsi_cmd->opcode = READ_BLOCK_LIMITS;
|
|
}
|
|
|
|
void
|
|
scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries,
|
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void (*cbfcnp)(struct cam_periph *, union ccb *),
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u_int8_t tag_action, int readop, int sli,
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int fixed, u_int32_t length, u_int8_t *data_ptr,
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u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout)
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{
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struct scsi_sa_rw *scsi_cmd;
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scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes;
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scsi_cmd->opcode = readop ? SA_READ : SA_WRITE;
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scsi_cmd->sli_fixed = 0;
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if (sli && readop)
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scsi_cmd->sli_fixed |= SAR_SLI;
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if (fixed)
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scsi_cmd->sli_fixed |= SARW_FIXED;
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scsi_ulto3b(length, scsi_cmd->length);
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scsi_cmd->control = 0;
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cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT,
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tag_action, data_ptr, dxfer_len, sense_len,
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sizeof(*scsi_cmd), timeout);
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}
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void
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scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries,
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void (*cbfcnp)(struct cam_periph *, union ccb *),
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u_int8_t tag_action, int immediate, int eot,
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int reten, int load, u_int8_t sense_len,
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u_int32_t timeout)
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{
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struct scsi_load_unload *scsi_cmd;
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scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes;
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bzero(scsi_cmd, sizeof(*scsi_cmd));
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scsi_cmd->opcode = LOAD_UNLOAD;
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if (immediate)
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scsi_cmd->immediate = SLU_IMMED;
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if (eot)
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scsi_cmd->eot_reten_load |= SLU_EOT;
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if (reten)
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scsi_cmd->eot_reten_load |= SLU_RETEN;
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if (load)
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scsi_cmd->eot_reten_load |= SLU_LOAD;
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cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
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NULL, 0, sense_len, sizeof(*scsi_cmd), timeout);
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}
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void
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scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries,
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void (*cbfcnp)(struct cam_periph *, union ccb *),
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u_int8_t tag_action, int immediate, u_int8_t sense_len,
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u_int32_t timeout)
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{
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struct scsi_rewind *scsi_cmd;
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scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes;
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bzero(scsi_cmd, sizeof(*scsi_cmd));
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scsi_cmd->opcode = REWIND;
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if (immediate)
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scsi_cmd->immediate = SREW_IMMED;
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cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
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0, sense_len, sizeof(*scsi_cmd), timeout);
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}
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void
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scsi_space(struct ccb_scsiio *csio, u_int32_t retries,
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void (*cbfcnp)(struct cam_periph *, union ccb *),
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u_int8_t tag_action, scsi_space_code code,
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u_int32_t count, u_int8_t sense_len, u_int32_t timeout)
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{
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struct scsi_space *scsi_cmd;
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scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes;
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scsi_cmd->opcode = SPACE;
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scsi_cmd->code = code;
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scsi_ulto3b(count, scsi_cmd->count);
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scsi_cmd->control = 0;
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cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
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0, sense_len, sizeof(*scsi_cmd), timeout);
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}
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void
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scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries,
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void (*cbfcnp)(struct cam_periph *, union ccb *),
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u_int8_t tag_action, int immediate, int setmark,
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u_int32_t num_marks, u_int8_t sense_len,
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u_int32_t timeout)
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{
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struct scsi_write_filemarks *scsi_cmd;
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scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes;
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bzero(scsi_cmd, sizeof(*scsi_cmd));
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scsi_cmd->opcode = WRITE_FILEMARKS;
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if (immediate)
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scsi_cmd->byte2 |= SWFMRK_IMMED;
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if (setmark)
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scsi_cmd->byte2 |= SWFMRK_WSMK;
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scsi_ulto3b(num_marks, scsi_cmd->num_marks);
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cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
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0, sense_len, sizeof(*scsi_cmd), timeout);
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}
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/*
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* The reserve and release unit commands differ only by their opcodes.
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*/
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void
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scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries,
|
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void (*cbfcnp)(struct cam_periph *, union ccb *),
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u_int8_t tag_action, int third_party,
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int third_party_id, u_int8_t sense_len,
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u_int32_t timeout, int reserve)
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|
{
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|
struct scsi_reserve_release_unit *scsi_cmd;
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scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes;
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bzero(scsi_cmd, sizeof(*scsi_cmd));
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|
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|
if (reserve)
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scsi_cmd->opcode = RESERVE_UNIT;
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else
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|
scsi_cmd->opcode = RELEASE_UNIT;
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|
if (third_party) {
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|
scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY;
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|
scsi_cmd->lun_thirdparty |=
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((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK);
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}
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cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
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0, sense_len, sizeof(*scsi_cmd), timeout);
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}
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void
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scsi_erase(struct ccb_scsiio *csio, u_int32_t retries,
|
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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)
|
|
{
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|
struct scsi_erase *scsi_cmd;
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|
scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes;
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bzero(scsi_cmd, sizeof(*scsi_cmd));
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|
scsi_cmd->opcode = ERASE;
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|
if (immediate)
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|
scsi_cmd->lun_imm_long |= SE_IMMED;
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|
if (long_erase)
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|
scsi_cmd->lun_imm_long |= SE_LONG;
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|
cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
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0, sense_len, sizeof(*scsi_cmd), timeout);
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}
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|
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/*
|
|
* Read Tape Position command.
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|
*/
|
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void
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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);
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|
scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes;
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|
bzero(scmd, sizeof(*scmd));
|
|
scmd->opcode = READ_POSITION;
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|
scmd->byte1 = hardsoft;
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|
}
|
|
|
|
/*
|
|
* 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);
|
|
}
|