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drivers
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s390
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char
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tape_std.h

tape_std.h 6.0 KB
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  1. /*
    2. 

  2.  *  drivers/s390/char/tape_34xx.h
    3. 

  3.  *    standard tape device functions for ibm tapes.
    4. 

  4.  *
    5. 

  5.  *  S390 and zSeries version
    6. 

  6.  *    Copyright (C) 2001,2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
    7. 

  7.  *    Author(s): Carsten Otte <cotte@de.ibm.com>
    8. 

  8.  *		 Tuan Ngo-Anh <ngoanh@de.ibm.com>
    9. 

  9.  *		 Martin Schwidefsky <schwidefsky@de.ibm.com>
    10. 

  10.  */
    11. 

  11. 

  12. #ifndef _TAPE_STD_H
    13. 

  13. #define _TAPE_STD_H
    14. 

  14. 

  15. #include <asm/tape390.h>
    16. 

  16. 

  17. /*
    18. 

  18.  * Biggest block size to handle. Currently 64K because we only build
    19. 

  19.  * channel programs without data chaining.
    20. 

  20.  */
    21. 

  21. #define MAX_BLOCKSIZE   65535
    22. 

  22. 

  23. /*
    24. 

  24.  * The CCW commands for the Tape type of command.
    25. 

  25.  */
    26. 

  26. #define INVALID_00		0x00	/* Invalid cmd */
    27. 

  27. #define BACKSPACEBLOCK		0x27	/* Back Space block */
    28. 

  28. #define BACKSPACEFILE		0x2f	/* Back Space file */
    29. 

  29. #define DATA_SEC_ERASE		0x97	/* Data security erase */
    30. 

  30. #define ERASE_GAP		0x17	/* Erase Gap */
    31. 

  31. #define FORSPACEBLOCK		0x37	/* Forward space block */
    32. 

  32. #define FORSPACEFILE		0x3F	/* Forward Space file */
    33. 

  33. #define FORCE_STREAM_CNT	0xEB	/* Forced streaming count # */
    34. 

  34. #define NOP			0x03	/* No operation	*/
    35. 

  35. #define READ_FORWARD		0x02	/* Read forward */
    36. 

  36. #define REWIND			0x07	/* Rewind */
    37. 

  37. #define REWIND_UNLOAD		0x0F	/* Rewind and Unload */
    38. 

  38. #define SENSE			0x04	/* Sense */
    39. 

  39. #define NEW_MODE_SET		0xEB	/* Guess it is Mode set */
    40. 

  40. #define WRITE_CMD		0x01	/* Write */
    41. 

  41. #define WRITETAPEMARK		0x1F	/* Write Tape Mark */
    42. 

  42. 

  43. #define ASSIGN			0xB7	/* 3420 REJECT,3480 OK	*/
    44. 

  44. #define CONTROL_ACCESS		0xE3	/* Set high speed */
    45. 

  45. #define DIAG_MODE_SET		0x0B	/* 3420 NOP, 3480 REJECT */
    46. 

  46. #define LOAD_DISPLAY		0x9F	/* 3420 REJECT,3480 OK */
    47. 

  47. #define LOCATE			0x4F	/* 3420 REJ, 3480 NOP */
    48. 

  48. #define LOOP_WRITE_TO_READ	0x8B	/* 3480 REJECT */
    49. 

  49. #define MODE_SET_DB		0xDB	/* 3420 REJECT,3480 OK */
    50. 

  50. #define MODE_SET_C3		0xC3	/* for 3420 */
    51. 

  51. #define MODE_SET_CB		0xCB	/* for 3420 */
    52. 

  52. #define MODE_SET_D3		0xD3	/* for 3420 */
    53. 

  53. #define READ_BACKWARD		0x0C	/* */
    54. 

  54. #define READ_BLOCK_ID		0x22	/* 3420 REJECT,3480 OK */
    55. 

  55. #define READ_BUFFER		0x12	/* 3420 REJECT,3480 OK */
    56. 

  56. #define READ_BUFF_LOG		0x24	/* 3420 REJECT,3480 OK */
    57. 

  57. #define RELEASE			0xD4	/* 3420 NOP, 3480 REJECT */
    58. 

  58. #define REQ_TRK_IN_ERROR	0x1B	/* 3420 NOP, 3480 REJECT */
    59. 

  59. #define RESERVE			0xF4	/* 3420 NOP, 3480 REJECT */
    60. 

  60. #define SENSE_GROUP_ID		0x34	/* 3420 REJECT,3480 OK */
    61. 

  61. #define SENSE_ID		0xE4	/* 3420 REJECT,3480 OK */
    62. 

  62. #define READ_DEV_CHAR		0x64	/* Read device characteristics */
    63. 

  63. #define SET_DIAGNOSE		0x4B	/* 3420 NOP, 3480 REJECT */
    64. 

  64. #define SET_GROUP_ID		0xAF	/* 3420 REJECT,3480 OK */
    65. 

  65. #define SET_TAPE_WRITE_IMMED	0xC3	/* for 3480 */
    66. 

  66. #define SUSPEND			0x5B	/* 3420 REJ, 3480 NOP */
    67. 

  67. #define SYNC			0x43	/* Synchronize (flush buffer) */
    68. 

  68. #define UNASSIGN		0xC7	/* 3420 REJECT,3480 OK */
    69. 

  69. #define PERF_SUBSYS_FUNC	0x77	/* 3490 CMD */
    70. 

  70. #define READ_CONFIG_DATA	0xFA	/* 3490 CMD */
    71. 

  71. #define READ_MESSAGE_ID		0x4E	/* 3490 CMD */
    72. 

  72. #define READ_SUBSYS_DATA	0x3E	/* 3490 CMD */
    73. 

  73. #define SET_INTERFACE_ID	0x73	/* 3490 CMD */
    74. 

  74. 

  75. #define SENSE_COMMAND_REJECT		0x80
    76. 

  76. #define SENSE_INTERVENTION_REQUIRED	0x40
    77. 

  77. #define SENSE_BUS_OUT_CHECK		0x20
    78. 

  78. #define SENSE_EQUIPMENT_CHECK		0x10
    79. 

  79. #define SENSE_DATA_CHECK		0x08
    80. 

  80. #define SENSE_OVERRUN			0x04
    81. 

  81. #define SENSE_DEFERRED_UNIT_CHECK	0x02
    82. 

  82. #define SENSE_ASSIGNED_ELSEWHERE	0x01
    83. 

  83. 

  84. #define SENSE_LOCATE_FAILURE		0x80
    85. 

  85. #define SENSE_DRIVE_ONLINE		0x40
    86. 

  86. #define SENSE_RESERVED			0x20
    87. 

  87. #define SENSE_RECORD_SEQUENCE_ERR	0x10
    88. 

  88. #define SENSE_BEGINNING_OF_TAPE		0x08
    89. 

  89. #define SENSE_WRITE_MODE		0x04
    90. 

  90. #define SENSE_WRITE_PROTECT		0x02
    91. 

  91. #define SENSE_NOT_CAPABLE		0x01
    92. 

  92. 

  93. #define SENSE_CHANNEL_ADAPTER_CODE	0xE0
    94. 

  94. #define SENSE_CHANNEL_ADAPTER_LOC	0x10
    95. 

  95. #define SENSE_REPORTING_CU		0x08
    96. 

  96. #define SENSE_AUTOMATIC_LOADER		0x04
    97. 

  97. #define SENSE_TAPE_SYNC_MODE		0x02
    98. 

  98. #define SENSE_TAPE_POSITIONING		0x01
    99. 

  99. 

  100. /* discipline functions */
    101. 

  101. struct tape_request *tape_std_read_block(struct tape_device *, size_t);
    102. 

  102. void tape_std_read_backward(struct tape_device *device,
    103. 

  103. 			    struct tape_request *request);
    104. 

  104. struct tape_request *tape_std_write_block(struct tape_device *, size_t);
    105. 

  105. struct tape_request *tape_std_bread(struct tape_device *, struct request *);
    106. 

  106. void tape_std_free_bread(struct tape_request *);
    107. 

  107. void tape_std_check_locate(struct tape_device *, struct tape_request *);
    108. 

  108. struct tape_request *tape_std_bwrite(struct request *,
    109. 

  109. 				     struct tape_device *, int);
    110. 

  110. 

  111. /* Some non-mtop commands. */
    112. 

  112. int tape_std_assign(struct tape_device *);
    113. 

  113. int tape_std_unassign(struct tape_device *);
    114. 

  114. int tape_std_read_block_id(struct tape_device *device, __u64 *id);
    115. 

  115. int tape_std_display(struct tape_device *, struct display_struct *disp);
    116. 

  116. int tape_std_terminate_write(struct tape_device *);
    117. 

  117. 

  118. /* Standard magnetic tape commands. */
    119. 

  119. int tape_std_mtbsf(struct tape_device *, int);
    120. 

  120. int tape_std_mtbsfm(struct tape_device *, int);
    121. 

  121. int tape_std_mtbsr(struct tape_device *, int);
    122. 

  122. int tape_std_mtcompression(struct tape_device *, int);
    123. 

  123. int tape_std_mteom(struct tape_device *, int);
    124. 

  124. int tape_std_mterase(struct tape_device *, int);
    125. 

  125. int tape_std_mtfsf(struct tape_device *, int);
    126. 

  126. int tape_std_mtfsfm(struct tape_device *, int);
    127. 

  127. int tape_std_mtfsr(struct tape_device *, int);
    128. 

  128. int tape_std_mtload(struct tape_device *, int);
    129. 

  129. int tape_std_mtnop(struct tape_device *, int);
    130. 

  130. int tape_std_mtoffl(struct tape_device *, int);
    131. 

  131. int tape_std_mtreset(struct tape_device *, int);
    132. 

  132. int tape_std_mtreten(struct tape_device *, int);
    133. 

  133. int tape_std_mtrew(struct tape_device *, int);
    134. 

  134. int tape_std_mtsetblk(struct tape_device *, int);
    135. 

  135. int tape_std_mtunload(struct tape_device *, int);
    136. 

  136. int tape_std_mtweof(struct tape_device *, int);
    137. 

  137. 

  138. /* Event handlers */
    139. 

  139. void tape_std_default_handler(struct tape_device *);
    140. 

  140. void tape_std_unexpect_uchk_handler(struct tape_device *);
    141. 

  141. void tape_std_irq(struct tape_device *);
    142. 

  142. void tape_std_process_eov(struct tape_device *);
    143. 

  143. 

  144. // the error recovery stuff:
    145. 

  145. void tape_std_error_recovery(struct tape_device *);
    146. 

  146. void tape_std_error_recovery_has_failed(struct tape_device *,int error_id);
    147. 

  147. void tape_std_error_recovery_succeded(struct tape_device *);
    148. 

  148. void tape_std_error_recovery_do_retry(struct tape_device *);
    149. 

  149. void tape_std_error_recovery_read_opposite(struct tape_device *);
    150. 

  150. void tape_std_error_recovery_HWBUG(struct tape_device *, int condno);
    151. 

  151. 

  152. #endif // _TAPE_STD_H
    153.