mtio.h 7.9 KB

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  1. /*
  2. * linux/mtio.h header file for Linux. Written by H. Bergman
  3. *
  4. * Modified for special ioctls provided by zftape in September 1997
  5. * by C.-J. Heine.
  6. */
  7. #ifndef _LINUX_MTIO_H
  8. #define _LINUX_MTIO_H
  9. #include <linux/types.h>
  10. #include <linux/ioctl.h>
  11. /*
  12. * Structures and definitions for mag tape io control commands
  13. */
  14. /* structure for MTIOCTOP - mag tape op command */
  15. struct mtop {
  16. short mt_op; /* operations defined below */
  17. int mt_count; /* how many of them */
  18. };
  19. /* Magnetic Tape operations [Not all operations supported by all drivers]: */
  20. #define MTRESET 0 /* +reset drive in case of problems */
  21. #define MTFSF 1 /* forward space over FileMark,
  22. * position at first record of next file
  23. */
  24. #define MTBSF 2 /* backward space FileMark (position before FM) */
  25. #define MTFSR 3 /* forward space record */
  26. #define MTBSR 4 /* backward space record */
  27. #define MTWEOF 5 /* write an end-of-file record (mark) */
  28. #define MTREW 6 /* rewind */
  29. #define MTOFFL 7 /* rewind and put the drive offline (eject?) */
  30. #define MTNOP 8 /* no op, set status only (read with MTIOCGET) */
  31. #define MTRETEN 9 /* retension tape */
  32. #define MTBSFM 10 /* +backward space FileMark, position at FM */
  33. #define MTFSFM 11 /* +forward space FileMark, position at FM */
  34. #define MTEOM 12 /* goto end of recorded media (for appending files).
  35. * MTEOM positions after the last FM, ready for
  36. * appending another file.
  37. */
  38. #define MTERASE 13 /* erase tape -- be careful! */
  39. #define MTRAS1 14 /* run self test 1 (nondestructive) */
  40. #define MTRAS2 15 /* run self test 2 (destructive) */
  41. #define MTRAS3 16 /* reserved for self test 3 */
  42. #define MTSETBLK 20 /* set block length (SCSI) */
  43. #define MTSETDENSITY 21 /* set tape density (SCSI) */
  44. #define MTSEEK 22 /* seek to block (Tandberg, etc.) */
  45. #define MTTELL 23 /* tell block (Tandberg, etc.) */
  46. #define MTSETDRVBUFFER 24 /* set the drive buffering according to SCSI-2 */
  47. /* ordinary buffered operation with code 1 */
  48. #define MTFSS 25 /* space forward over setmarks */
  49. #define MTBSS 26 /* space backward over setmarks */
  50. #define MTWSM 27 /* write setmarks */
  51. #define MTLOCK 28 /* lock the drive door */
  52. #define MTUNLOCK 29 /* unlock the drive door */
  53. #define MTLOAD 30 /* execute the SCSI load command */
  54. #define MTUNLOAD 31 /* execute the SCSI unload command */
  55. #define MTCOMPRESSION 32/* control compression with SCSI mode page 15 */
  56. #define MTSETPART 33 /* Change the active tape partition */
  57. #define MTMKPART 34 /* Format the tape with one or two partitions */
  58. #define MTWEOFI 35 /* write an end-of-file record (mark) in immediate mode */
  59. /* structure for MTIOCGET - mag tape get status command */
  60. struct mtget {
  61. long mt_type; /* type of magtape device */
  62. long mt_resid; /* residual count: (not sure)
  63. * number of bytes ignored, or
  64. * number of files not skipped, or
  65. * number of records not skipped.
  66. */
  67. /* the following registers are device dependent */
  68. long mt_dsreg; /* status register */
  69. long mt_gstat; /* generic (device independent) status */
  70. long mt_erreg; /* error register */
  71. /* The next two fields are not always used */
  72. __kernel_daddr_t mt_fileno; /* number of current file on tape */
  73. __kernel_daddr_t mt_blkno; /* current block number */
  74. };
  75. /*
  76. * Constants for mt_type. Not all of these are supported,
  77. * and these are not all of the ones that are supported.
  78. */
  79. #define MT_ISUNKNOWN 0x01
  80. #define MT_ISQIC02 0x02 /* Generic QIC-02 tape streamer */
  81. #define MT_ISWT5150 0x03 /* Wangtek 5150EQ, QIC-150, QIC-02 */
  82. #define MT_ISARCHIVE_5945L2 0x04 /* Archive 5945L-2, QIC-24, QIC-02? */
  83. #define MT_ISCMSJ500 0x05 /* CMS Jumbo 500 (QIC-02?) */
  84. #define MT_ISTDC3610 0x06 /* Tandberg 6310, QIC-24 */
  85. #define MT_ISARCHIVE_VP60I 0x07 /* Archive VP60i, QIC-02 */
  86. #define MT_ISARCHIVE_2150L 0x08 /* Archive Viper 2150L */
  87. #define MT_ISARCHIVE_2060L 0x09 /* Archive Viper 2060L */
  88. #define MT_ISARCHIVESC499 0x0A /* Archive SC-499 QIC-36 controller */
  89. #define MT_ISQIC02_ALL_FEATURES 0x0F /* Generic QIC-02 with all features */
  90. #define MT_ISWT5099EEN24 0x11 /* Wangtek 5099-een24, 60MB, QIC-24 */
  91. #define MT_ISTEAC_MT2ST 0x12 /* Teac MT-2ST 155mb drive, Teac DC-1 card (Wangtek type) */
  92. #define MT_ISEVEREX_FT40A 0x32 /* Everex FT40A (QIC-40) */
  93. #define MT_ISDDS1 0x51 /* DDS device without partitions */
  94. #define MT_ISDDS2 0x52 /* DDS device with partitions */
  95. #define MT_ISONSTREAM_SC 0x61 /* OnStream SCSI tape drives (SC-x0)
  96. and SCSI emulated (DI, DP, USB) */
  97. #define MT_ISSCSI1 0x71 /* Generic ANSI SCSI-1 tape unit */
  98. #define MT_ISSCSI2 0x72 /* Generic ANSI SCSI-2 tape unit */
  99. /* QIC-40/80/3010/3020 ftape supported drives.
  100. * 20bit vendor ID + 0x800000 (see ftape-vendors.h)
  101. */
  102. #define MT_ISFTAPE_UNKNOWN 0x800000 /* obsolete */
  103. #define MT_ISFTAPE_FLAG 0x800000
  104. /* structure for MTIOCPOS - mag tape get position command */
  105. struct mtpos {
  106. long mt_blkno; /* current block number */
  107. };
  108. /* mag tape io control commands */
  109. #define MTIOCTOP _IOW('m', 1, struct mtop) /* do a mag tape op */
  110. #define MTIOCGET _IOR('m', 2, struct mtget) /* get tape status */
  111. #define MTIOCPOS _IOR('m', 3, struct mtpos) /* get tape position */
  112. /* Generic Mag Tape (device independent) status macros for examining
  113. * mt_gstat -- HP-UX compatible.
  114. * There is room for more generic status bits here, but I don't
  115. * know which of them are reserved. At least three or so should
  116. * be added to make this really useful.
  117. */
  118. #define GMT_EOF(x) ((x) & 0x80000000)
  119. #define GMT_BOT(x) ((x) & 0x40000000)
  120. #define GMT_EOT(x) ((x) & 0x20000000)
  121. #define GMT_SM(x) ((x) & 0x10000000) /* DDS setmark */
  122. #define GMT_EOD(x) ((x) & 0x08000000) /* DDS EOD */
  123. #define GMT_WR_PROT(x) ((x) & 0x04000000)
  124. /* #define GMT_ ? ((x) & 0x02000000) */
  125. #define GMT_ONLINE(x) ((x) & 0x01000000)
  126. #define GMT_D_6250(x) ((x) & 0x00800000)
  127. #define GMT_D_1600(x) ((x) & 0x00400000)
  128. #define GMT_D_800(x) ((x) & 0x00200000)
  129. /* #define GMT_ ? ((x) & 0x00100000) */
  130. /* #define GMT_ ? ((x) & 0x00080000) */
  131. #define GMT_DR_OPEN(x) ((x) & 0x00040000) /* door open (no tape) */
  132. /* #define GMT_ ? ((x) & 0x00020000) */
  133. #define GMT_IM_REP_EN(x) ((x) & 0x00010000) /* immediate report mode */
  134. #define GMT_CLN(x) ((x) & 0x00008000) /* cleaning requested */
  135. /* 15 generic status bits unused */
  136. /* SCSI-tape specific definitions */
  137. /* Bitfield shifts in the status */
  138. #define MT_ST_BLKSIZE_SHIFT 0
  139. #define MT_ST_BLKSIZE_MASK 0xffffff
  140. #define MT_ST_DENSITY_SHIFT 24
  141. #define MT_ST_DENSITY_MASK 0xff000000
  142. #define MT_ST_SOFTERR_SHIFT 0
  143. #define MT_ST_SOFTERR_MASK 0xffff
  144. /* Bitfields for the MTSETDRVBUFFER ioctl */
  145. #define MT_ST_OPTIONS 0xf0000000
  146. #define MT_ST_BOOLEANS 0x10000000
  147. #define MT_ST_SETBOOLEANS 0x30000000
  148. #define MT_ST_CLEARBOOLEANS 0x40000000
  149. #define MT_ST_WRITE_THRESHOLD 0x20000000
  150. #define MT_ST_DEF_BLKSIZE 0x50000000
  151. #define MT_ST_DEF_OPTIONS 0x60000000
  152. #define MT_ST_TIMEOUTS 0x70000000
  153. #define MT_ST_SET_TIMEOUT (MT_ST_TIMEOUTS | 0x000000)
  154. #define MT_ST_SET_LONG_TIMEOUT (MT_ST_TIMEOUTS | 0x100000)
  155. #define MT_ST_SET_CLN 0x80000000
  156. #define MT_ST_BUFFER_WRITES 0x1
  157. #define MT_ST_ASYNC_WRITES 0x2
  158. #define MT_ST_READ_AHEAD 0x4
  159. #define MT_ST_DEBUGGING 0x8
  160. #define MT_ST_TWO_FM 0x10
  161. #define MT_ST_FAST_MTEOM 0x20
  162. #define MT_ST_AUTO_LOCK 0x40
  163. #define MT_ST_DEF_WRITES 0x80
  164. #define MT_ST_CAN_BSR 0x100
  165. #define MT_ST_NO_BLKLIMS 0x200
  166. #define MT_ST_CAN_PARTITIONS 0x400
  167. #define MT_ST_SCSI2LOGICAL 0x800
  168. #define MT_ST_SYSV 0x1000
  169. #define MT_ST_NOWAIT 0x2000
  170. #define MT_ST_SILI 0x4000
  171. #define MT_ST_NOWAIT_EOF 0x8000
  172. /* The mode parameters to be controlled. Parameter chosen with bits 20-28 */
  173. #define MT_ST_CLEAR_DEFAULT 0xfffff
  174. #define MT_ST_DEF_DENSITY (MT_ST_DEF_OPTIONS | 0x100000)
  175. #define MT_ST_DEF_COMPRESSION (MT_ST_DEF_OPTIONS | 0x200000)
  176. #define MT_ST_DEF_DRVBUFFER (MT_ST_DEF_OPTIONS | 0x300000)
  177. /* The offset for the arguments for the special HP changer load command. */
  178. #define MT_ST_HPLOADER_OFFSET 10000
  179. #endif /* _LINUX_MTIO_H */