/* * Copyright (c) 1982, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)mtio.h 8.1 (Berkeley) 6/2/93 * $FreeBSD: src/sys/sys/mtio.h,v 1.20.2.2 2001/01/22 18:02:47 mjacob Exp $ * $DragonFly: src/sys/sys/mtio.h,v 1.4 2006/05/20 02:42:13 dillon Exp $ */ #ifndef _SYS_MTIO_H_ #define _SYS_MTIO_H_ #ifndef _SYS_TYPES_H_ #include <sys/types.h> #endif #ifndef _SYS_IOCCOM_H_ #include <sys/ioccom.h> #endif /* * Structures and definitions for mag tape io control commands */ /* structure for MTIOCTOP - mag tape op command */ struct mtop { short mt_op; /* operations defined below */ daddr_t mt_count; /* how many of them */ }; /* operations */ #define MTWEOF 0 /* write an end-of-file record */ #define MTFSF 1 /* forward space file */ #define MTBSF 2 /* backward space file */ #define MTFSR 3 /* forward space record */ #define MTBSR 4 /* backward space record */ #define MTREW 5 /* rewind */ #define MTOFFL 6 /* rewind and put the drive offline */ #define MTNOP 7 /* no operation, sets status only */ #define MTCACHE 8 /* enable controller cache */ #define MTNOCACHE 9 /* disable controller cache */ #if defined(__DragonFly__) /* Set block size for device. If device is a variable size dev */ /* a non zero parameter will change the device to a fixed block size */ /* device with block size set to that of the parameter passed in. */ /* Resetting the block size to 0 will restore the device to a variable */ /* block size device. */ #define MTSETBSIZ 10 /* Set density values for device. Sets the value for the opened mode only. */ #define MTSETDNSTY 11 #define MTERASE 12 /* erase to EOM */ #define MTEOD 13 /* Space to EOM */ #define MTCOMP 14 /* select compression mode 0=off, 1=def */ #define MTRETENS 15 /* re-tension tape */ #define MTWSS 16 /* write setmark(s) */ #define MTFSS 17 /* forward space setmark */ #define MTBSS 18 /* backward space setmark */ #define MT_COMP_ENABLE 0xffffffff #define MT_COMP_DISABLED 0xfffffffe #define MT_COMP_UNSUPP 0xfffffffd /* * Values in mt_dsreg that say what the device is doing */ #define MTIO_DSREG_NIL 0 /* Unknown */ #define MTIO_DSREG_REST 1 /* Doing Nothing */ #define MTIO_DSREG_RBSY 2 /* Communicating with tape (but no motion) */ #define MTIO_DSREG_WR 20 /* Writing */ #define MTIO_DSREG_FMK 21 /* Writing Filemarks */ #define MTIO_DSREG_ZER 22 /* Erasing */ #define MTIO_DSREG_RD 30 /* Reading */ #define MTIO_DSREG_FWD 40 /* Spacing Forward */ #define MTIO_DSREG_REV 41 /* Spacing Reverse */ #define MTIO_DSREG_POS 42 /* Hardware Positioning (direction unknown) */ #define MTIO_DSREG_REW 43 /* Rewinding */ #define MTIO_DSREG_TEN 44 /* Retensioning */ #define MTIO_DSREG_UNL 45 /* Unloading */ #define MTIO_DSREG_LD 46 /* Loading */ #endif /* __DragonFly__ */ /* structure for MTIOCGET - mag tape get status command */ struct mtget { short mt_type; /* type of magtape device */ /* the following two registers are grossly device dependent */ short mt_dsreg; /* ``drive status'' register */ short mt_erreg; /* ``error'' register */ /* end device-dependent registers */ /* * Note that the residual count, while maintained, may be * be nonsense because the size of the residual may (greatly) * exceed 32 K-bytes. Use the MTIOCERRSTAT ioctl to get a * more accurate count. */ short mt_resid; /* residual count */ #if defined (__DragonFly__) daddr_t mt_blksiz; /* presently operating blocksize */ daddr_t mt_density; /* presently operating density */ u_int32_t mt_comp; /* presently operating compression */ daddr_t mt_blksiz0; /* blocksize for mode 0 */ daddr_t mt_blksiz1; /* blocksize for mode 1 */ daddr_t mt_blksiz2; /* blocksize for mode 2 */ daddr_t mt_blksiz3; /* blocksize for mode 3 */ daddr_t mt_density0; /* density for mode 0 */ daddr_t mt_density1; /* density for mode 1 */ daddr_t mt_density2; /* density for mode 2 */ daddr_t mt_density3; /* density for mode 3 */ /* the following are not yet implemented */ u_int32_t mt_comp0; /* compression type for mode 0 */ u_int32_t mt_comp1; /* compression type for mode 1 */ u_int32_t mt_comp2; /* compression type for mode 2 */ u_int32_t mt_comp3; /* compression type for mode 3 */ /* end not yet implemented */ #endif daddr_t mt_fileno; /* relative file number of current position */ daddr_t mt_blkno; /* relative block number of current position */ }; /* structure for MTIOCERRSTAT - tape get error status command */ /* really only supported for SCSI tapes right now */ struct scsi_tape_errors { /* * These are latched from the last command that had a SCSI * Check Condition noted for these operations. The act * of issuing an MTIOCERRSTAT unlatches and clears them. */ u_int8_t io_sense[32]; /* Last Sense Data For Data I/O */ int32_t io_resid; /* residual count from last Data I/O */ u_int8_t io_cdb[16]; /* Command that Caused the Last Data Sense */ u_int8_t ctl_sense[32]; /* Last Sense Data For Control I/O */ int32_t ctl_resid; /* residual count from last Control I/O */ u_int8_t ctl_cdb[16]; /* Command that Caused the Last Control Sense */ /* * These are the read and write cumulative error counters. * (how to reset cumulative error counters is not yet defined). * (not implemented as yet but space is being reserved for them) */ struct { u_int32_t retries; /* total # retries performed */ u_int32_t corrected; /* total # corrections performed */ u_int32_t processed; /* total # corrections succssful */ u_int32_t failures; /* total # corrections/retries failed */ u_int64_t nbytes; /* total # bytes processed */ } wterr, rderr; }; union mterrstat { struct scsi_tape_errors scsi_errstat; char _reserved_padding[256]; }; /* * Constants for mt_type byte. These are the same * for controllers compatible with the types listed. */ #define MT_ISTS 0x01 /* TS-11 */ #define MT_ISHT 0x02 /* TM03 Massbus: TE16, TU45, TU77 */ #define MT_ISTM 0x03 /* TM11/TE10 Unibus */ #define MT_ISMT 0x04 /* TM78/TU78 Massbus */ #define MT_ISUT 0x05 /* SI TU-45 emulation on Unibus */ #define MT_ISCPC 0x06 /* SUN */ #define MT_ISAR 0x07 /* SUN */ #define MT_ISTMSCP 0x08 /* DEC TMSCP protocol (TU81, TK50) */ #define MT_ISCY 0x09 /* CCI Cipher */ #define MT_ISCT 0x0a /* HP 1/4 tape */ #define MT_ISFHP 0x0b /* HP 7980 1/2 tape */ #define MT_ISEXABYTE 0x0c /* Exabyte */ #define MT_ISEXA8200 0x0c /* Exabyte EXB-8200 */ #define MT_ISEXA8500 0x0d /* Exabyte EXB-8500 */ #define MT_ISVIPER1 0x0e /* Archive Viper-150 */ #define MT_ISPYTHON 0x0f /* Archive Python (DAT) */ #define MT_ISHPDAT 0x10 /* HP 35450A DAT drive */ #define MT_ISMFOUR 0x11 /* M4 Data 1/2 9track drive */ #define MT_ISTK50 0x12 /* DEC SCSI TK50 */ #define MT_ISMT02 0x13 /* Emulex MT02 SCSI tape controller */ /* mag tape io control commands */ #define MTIOCTOP _IOW('m', 1, struct mtop) /* do a mag tape op */ #define MTIOCGET _IOR('m', 2, struct mtget) /* get tape status */ /* these two do not appear to be used anywhere */ #define MTIOCIEOT _IO('m', 3) /* ignore EOT error */ #define MTIOCEEOT _IO('m', 4) /* enable EOT error */ /* * When more SCSI-3 SSC (streaming device) devices are out there * that support the full 32 byte type 2 structure, we'll have to * rethink these ioctls to support all the entities they haul into * the picture (64 bit blocks, logical file record numbers, etc..). */ #define MTIOCRDSPOS _IOR('m', 5, u_int32_t) /* get logical blk addr */ #define MTIOCRDHPOS _IOR('m', 6, u_int32_t) /* get hardware blk addr */ #define MTIOCSLOCATE _IOW('m', 5, u_int32_t) /* seek to logical blk addr */ #define MTIOCHLOCATE _IOW('m', 6, u_int32_t) /* seek to hardware blk addr */ #define MTIOCERRSTAT _IOR('m', 7, union mterrstat) /* get tape errors */ /* * Set EOT model- argument is number of filemarks to end a tape with. * Note that not all possible values will be accepted. */ #define MTIOCSETEOTMODEL _IOW('m', 8, u_int32_t) /* Get current EOT model */ #define MTIOCGETEOTMODEL _IOR('m', 8, u_int32_t) #ifndef _KERNEL #define DEFTAPE "/dev/nsa0" #endif #ifdef _KERNEL /* * minor device number */ #define T_UNIT 003 /* unit selection */ #define T_NOREWIND 004 /* no rewind on close */ #define T_DENSEL 030 /* density select */ #define T_800BPI 000 /* select 800 bpi */ #define T_1600BPI 010 /* select 1600 bpi */ #define T_6250BPI 020 /* select 6250 bpi */ #define T_BADBPI 030 /* undefined selection */ #endif #endif /* !_SYS_MTIO_H_ */
