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001: /* 
002:  * linux/mtio.h header file for Linux. Written by H. Bergman
003:  *
004:  * Modified for special ioctls provided by zftape in September 1997
005:  * by C.-J. Heine.
006:  */
007: 
008: #ifndef _LINUX_MTIO_H
009: #define _LINUX_MTIO_H
010: 
011: #include <linux/types.h>
012: #include <linux/ioctl.h>
013: 
014: /*
015:  * Structures and definitions for mag tape io control commands
016:  */
017: 
018: /* structure for MTIOCTOP - mag tape op command */
019: struct  mtop {
020:         short   mt_op;          /* operations defined below */
021:         int     mt_count;       /* how many of them */
022: };
023: 
024: /* Magnetic Tape operations [Not all operations supported by all drivers]: */
025: #define MTRESET 0       /* +reset drive in case of problems */
026: #define MTFSF   1       /* forward space over FileMark,
027:                          * position at first record of next file 
028:                          */
029: #define MTBSF   2       /* backward space FileMark (position before FM) */
030: #define MTFSR   3       /* forward space record */
031: #define MTBSR   4       /* backward space record */
032: #define MTWEOF  5       /* write an end-of-file record (mark) */
033: #define MTREW   6       /* rewind */
034: #define MTOFFL  7       /* rewind and put the drive offline (eject?) */
035: #define MTNOP   8       /* no op, set status only (read with MTIOCGET) */
036: #define MTRETEN 9       /* retension tape */
037: #define MTBSFM  10      /* +backward space FileMark, position at FM */
038: #define MTFSFM  11      /* +forward space FileMark, position at FM */
039: #define MTEOM   12      /* goto end of recorded media (for appending files).
040:                          * MTEOM positions after the last FM, ready for
041:                          * appending another file.
042:                          */
043: #define MTERASE 13      /* erase tape -- be careful! */
044: 
045: #define MTRAS1  14      /* run self test 1 (nondestructive) */
046: #define MTRAS2  15      /* run self test 2 (destructive) */
047: #define MTRAS3  16      /* reserved for self test 3 */
048: 
049: #define MTSETBLK 20     /* set block length (SCSI) */
050: #define MTSETDENSITY 21 /* set tape density (SCSI) */
051: #define MTSEEK  22      /* seek to block (Tandberg, etc.) */
052: #define MTTELL  23      /* tell block (Tandberg, etc.) */
053: #define MTSETDRVBUFFER 24 /* set the drive buffering according to SCSI-2 */
054:                         /* ordinary buffered operation with code 1 */
055: #define MTFSS   25      /* space forward over setmarks */
056: #define MTBSS   26      /* space backward over setmarks */
057: #define MTWSM   27      /* write setmarks */
058: 
059: #define MTLOCK  28      /* lock the drive door */
060: #define MTUNLOCK 29     /* unlock the drive door */
061: #define MTLOAD  30      /* execute the SCSI load command */
062: #define MTUNLOAD 31     /* execute the SCSI unload command */
063: #define MTCOMPRESSION 32/* control compression with SCSI mode page 15 */
064: #define MTSETPART 33    /* Change the active tape partition */
065: #define MTMKPART  34    /* Format the tape with one or two partitions */
066: #define MTWEOFI 35      /* write an end-of-file record (mark) in immediate mode */
067: 
068: /* structure for MTIOCGET - mag tape get status command */
069: 
070: struct  mtget {
071:         long    mt_type;        /* type of magtape device */
072:         long    mt_resid;       /* residual count: (not sure)
073:                                  *      number of bytes ignored, or
074:                                  *      number of files not skipped, or
075:                                  *      number of records not skipped.
076:                                  */
077:         /* the following registers are device dependent */
078:         long    mt_dsreg;       /* status register */
079:         long    mt_gstat;       /* generic (device independent) status */
080:         long    mt_erreg;       /* error register */
081:         /* The next two fields are not always used */
082:         __kernel_daddr_t mt_fileno;     /* number of current file on tape */
083:         __kernel_daddr_t mt_blkno;      /* current block number */
084: };
085: 
086: 
087: 
088: /*
089:  * Constants for mt_type. Not all of these are supported,
090:  * and these are not all of the ones that are supported.
091:  */
092: #define MT_ISUNKNOWN            0x01
093: #define MT_ISQIC02              0x02    /* Generic QIC-02 tape streamer */
094: #define MT_ISWT5150             0x03    /* Wangtek 5150EQ, QIC-150, QIC-02 */
095: #define MT_ISARCHIVE_5945L2     0x04    /* Archive 5945L-2, QIC-24, QIC-02? */
096: #define MT_ISCMSJ500            0x05    /* CMS Jumbo 500 (QIC-02?) */
097: #define MT_ISTDC3610            0x06    /* Tandberg 6310, QIC-24 */
098: #define MT_ISARCHIVE_VP60I      0x07    /* Archive VP60i, QIC-02 */
099: #define MT_ISARCHIVE_2150L      0x08    /* Archive Viper 2150L */
100: #define MT_ISARCHIVE_2060L      0x09    /* Archive Viper 2060L */
101: #define MT_ISARCHIVESC499       0x0A    /* Archive SC-499 QIC-36 controller */
102: #define MT_ISQIC02_ALL_FEATURES 0x0F    /* Generic QIC-02 with all features */
103: #define MT_ISWT5099EEN24        0x11    /* Wangtek 5099-een24, 60MB, QIC-24 */
104: #define MT_ISTEAC_MT2ST         0x12    /* Teac MT-2ST 155mb drive, Teac DC-1 card (Wangtek type) */
105: #define MT_ISEVEREX_FT40A       0x32    /* Everex FT40A (QIC-40) */
106: #define MT_ISDDS1               0x51    /* DDS device without partitions */
107: #define MT_ISDDS2               0x52    /* DDS device with partitions */
108: #define MT_ISONSTREAM_SC        0x61   /* OnStream SCSI tape drives (SC-x0)
109:                                           and SCSI emulated (DI, DP, USB) */
110: #define MT_ISSCSI1              0x71    /* Generic ANSI SCSI-1 tape unit */
111: #define MT_ISSCSI2              0x72    /* Generic ANSI SCSI-2 tape unit */
112: 
113: /* QIC-40/80/3010/3020 ftape supported drives.
114:  * 20bit vendor ID + 0x800000 (see ftape-vendors.h)
115:  */
116: #define MT_ISFTAPE_UNKNOWN      0x800000 /* obsolete */
117: #define MT_ISFTAPE_FLAG 0x800000
118: 
119: 
120: /* structure for MTIOCPOS - mag tape get position command */
121: 
122: struct  mtpos {
123:         long    mt_blkno;       /* current block number */
124: };
125: 
126: 
127: /* mag tape io control commands */
128: #define MTIOCTOP        _IOW('m', 1, struct mtop)       /* do a mag tape op */
129: #define MTIOCGET        _IOR('m', 2, struct mtget)      /* get tape status */
130: #define MTIOCPOS        _IOR('m', 3, struct mtpos)      /* get tape position */
131: 
132: 
133: /* Generic Mag Tape (device independent) status macros for examining
134:  * mt_gstat -- HP-UX compatible.
135:  * There is room for more generic status bits here, but I don't
136:  * know which of them are reserved. At least three or so should
137:  * be added to make this really useful.
138:  */
139: #define GMT_EOF(x)              ((x) & 0x80000000)
140: #define GMT_BOT(x)              ((x) & 0x40000000)
141: #define GMT_EOT(x)              ((x) & 0x20000000)
142: #define GMT_SM(x)               ((x) & 0x10000000)  /* DDS setmark */
143: #define GMT_EOD(x)              ((x) & 0x08000000)  /* DDS EOD */
144: #define GMT_WR_PROT(x)          ((x) & 0x04000000)
145: /* #define GMT_ ?               ((x) & 0x02000000) */
146: #define GMT_ONLINE(x)           ((x) & 0x01000000)
147: #define GMT_D_6250(x)           ((x) & 0x00800000)
148: #define GMT_D_1600(x)           ((x) & 0x00400000)
149: #define GMT_D_800(x)            ((x) & 0x00200000)
150: /* #define GMT_ ?               ((x) & 0x00100000) */
151: /* #define GMT_ ?               ((x) & 0x00080000) */
152: #define GMT_DR_OPEN(x)          ((x) & 0x00040000)  /* door open (no tape) */
153: /* #define GMT_ ?               ((x) & 0x00020000) */
154: #define GMT_IM_REP_EN(x)        ((x) & 0x00010000)  /* immediate report mode */
155: #define GMT_CLN(x)              ((x) & 0x00008000)  /* cleaning requested */
156: /* 15 generic status bits unused */
157: 
158: 
159: /* SCSI-tape specific definitions */
160: /* Bitfield shifts in the status  */
161: #define MT_ST_BLKSIZE_SHIFT     0
162: #define MT_ST_BLKSIZE_MASK      0xffffff
163: #define MT_ST_DENSITY_SHIFT     24
164: #define MT_ST_DENSITY_MASK      0xff000000
165: 
166: #define MT_ST_SOFTERR_SHIFT     0
167: #define MT_ST_SOFTERR_MASK      0xffff
168: 
169: /* Bitfields for the MTSETDRVBUFFER ioctl */
170: #define MT_ST_OPTIONS           0xf0000000
171: #define MT_ST_BOOLEANS          0x10000000
172: #define MT_ST_SETBOOLEANS       0x30000000
173: #define MT_ST_CLEARBOOLEANS     0x40000000
174: #define MT_ST_WRITE_THRESHOLD   0x20000000
175: #define MT_ST_DEF_BLKSIZE       0x50000000
176: #define MT_ST_DEF_OPTIONS       0x60000000
177: #define MT_ST_TIMEOUTS          0x70000000
178: #define MT_ST_SET_TIMEOUT       (MT_ST_TIMEOUTS | 0x000000)
179: #define MT_ST_SET_LONG_TIMEOUT  (MT_ST_TIMEOUTS | 0x100000)
180: #define MT_ST_SET_CLN           0x80000000
181: 
182: #define MT_ST_BUFFER_WRITES     0x1
183: #define MT_ST_ASYNC_WRITES      0x2
184: #define MT_ST_READ_AHEAD        0x4
185: #define MT_ST_DEBUGGING         0x8
186: #define MT_ST_TWO_FM            0x10
187: #define MT_ST_FAST_MTEOM        0x20
188: #define MT_ST_AUTO_LOCK         0x40
189: #define MT_ST_DEF_WRITES        0x80
190: #define MT_ST_CAN_BSR           0x100
191: #define MT_ST_NO_BLKLIMS        0x200
192: #define MT_ST_CAN_PARTITIONS    0x400
193: #define MT_ST_SCSI2LOGICAL      0x800
194: #define MT_ST_SYSV              0x1000
195: #define MT_ST_NOWAIT            0x2000
196: #define MT_ST_SILI              0x4000
197: 
198: /* The mode parameters to be controlled. Parameter chosen with bits 20-28 */
199: #define MT_ST_CLEAR_DEFAULT     0xfffff
200: #define MT_ST_DEF_DENSITY       (MT_ST_DEF_OPTIONS | 0x100000)
201: #define MT_ST_DEF_COMPRESSION   (MT_ST_DEF_OPTIONS | 0x200000)
202: #define MT_ST_DEF_DRVBUFFER     (MT_ST_DEF_OPTIONS | 0x300000)
203: 
204: /* The offset for the arguments for the special HP changer load command. */
205: #define MT_ST_HPLOADER_OFFSET 10000
206: 
207: #endif /* _LINUX_MTIO_H */
208: 

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