1 /* 2 * standard tape device functions for ibm tapes. 3 * 4 * Copyright IBM Corp. 2001, 2006 5 * Author(s): Carsten Otte <cotte@de.ibm.com> 6 * Tuan Ngo-Anh <ngoanh@de.ibm.com> 7 * Martin Schwidefsky <schwidefsky@de.ibm.com> 8 */ 9 10 #ifndef _TAPE_STD_H 11 #define _TAPE_STD_H 12 13 #include <asm/tape390.h> 14 15 /* 16 * Biggest block size to handle. Currently 64K because we only build 17 * channel programs without data chaining. 18 */ 19 #define MAX_BLOCKSIZE 65535 20 21 /* 22 * The CCW commands for the Tape type of command. 23 */ 24 #define INVALID_00 0x00 /* Invalid cmd */ 25 #define BACKSPACEBLOCK 0x27 /* Back Space block */ 26 #define BACKSPACEFILE 0x2f /* Back Space file */ 27 #define DATA_SEC_ERASE 0x97 /* Data security erase */ 28 #define ERASE_GAP 0x17 /* Erase Gap */ 29 #define FORSPACEBLOCK 0x37 /* Forward space block */ 30 #define FORSPACEFILE 0x3F /* Forward Space file */ 31 #define FORCE_STREAM_CNT 0xEB /* Forced streaming count # */ 32 #define NOP 0x03 /* No operation */ 33 #define READ_FORWARD 0x02 /* Read forward */ 34 #define REWIND 0x07 /* Rewind */ 35 #define REWIND_UNLOAD 0x0F /* Rewind and Unload */ 36 #define SENSE 0x04 /* Sense */ 37 #define NEW_MODE_SET 0xEB /* Guess it is Mode set */ 38 #define WRITE_CMD 0x01 /* Write */ 39 #define WRITETAPEMARK 0x1F /* Write Tape Mark */ 40 41 #define ASSIGN 0xB7 /* 3420 REJECT,3480 OK */ 42 #define CONTROL_ACCESS 0xE3 /* Set high speed */ 43 #define DIAG_MODE_SET 0x0B /* 3420 NOP, 3480 REJECT */ 44 #define LOAD_DISPLAY 0x9F /* 3420 REJECT,3480 OK */ 45 #define LOCATE 0x4F /* 3420 REJ, 3480 NOP */ 46 #define LOOP_WRITE_TO_READ 0x8B /* 3480 REJECT */ 47 #define MODE_SET_DB 0xDB /* 3420 REJECT,3480 OK */ 48 #define MODE_SET_C3 0xC3 /* for 3420 */ 49 #define MODE_SET_CB 0xCB /* for 3420 */ 50 #define MODE_SET_D3 0xD3 /* for 3420 */ 51 #define READ_BACKWARD 0x0C /* */ 52 #define READ_BLOCK_ID 0x22 /* 3420 REJECT,3480 OK */ 53 #define READ_BUFFER 0x12 /* 3420 REJECT,3480 OK */ 54 #define READ_BUFF_LOG 0x24 /* 3420 REJECT,3480 OK */ 55 #define RELEASE 0xD4 /* 3420 NOP, 3480 REJECT */ 56 #define REQ_TRK_IN_ERROR 0x1B /* 3420 NOP, 3480 REJECT */ 57 #define RESERVE 0xF4 /* 3420 NOP, 3480 REJECT */ 58 #define SENSE_GROUP_ID 0x34 /* 3420 REJECT,3480 OK */ 59 #define SENSE_ID 0xE4 /* 3420 REJECT,3480 OK */ 60 #define READ_DEV_CHAR 0x64 /* Read device characteristics */ 61 #define SET_DIAGNOSE 0x4B /* 3420 NOP, 3480 REJECT */ 62 #define SET_GROUP_ID 0xAF /* 3420 REJECT,3480 OK */ 63 #define SET_TAPE_WRITE_IMMED 0xC3 /* for 3480 */ 64 #define SUSPEND 0x5B /* 3420 REJ, 3480 NOP */ 65 #define SYNC 0x43 /* Synchronize (flush buffer) */ 66 #define UNASSIGN 0xC7 /* 3420 REJECT,3480 OK */ 67 #define PERF_SUBSYS_FUNC 0x77 /* 3490 CMD */ 68 #define READ_CONFIG_DATA 0xFA /* 3490 CMD */ 69 #define READ_MESSAGE_ID 0x4E /* 3490 CMD */ 70 #define READ_SUBSYS_DATA 0x3E /* 3490 CMD */ 71 #define SET_INTERFACE_ID 0x73 /* 3490 CMD */ 72 73 #define SENSE_COMMAND_REJECT 0x80 74 #define SENSE_INTERVENTION_REQUIRED 0x40 75 #define SENSE_BUS_OUT_CHECK 0x20 76 #define SENSE_EQUIPMENT_CHECK 0x10 77 #define SENSE_DATA_CHECK 0x08 78 #define SENSE_OVERRUN 0x04 79 #define SENSE_DEFERRED_UNIT_CHECK 0x02 80 #define SENSE_ASSIGNED_ELSEWHERE 0x01 81 82 #define SENSE_LOCATE_FAILURE 0x80 83 #define SENSE_DRIVE_ONLINE 0x40 84 #define SENSE_RESERVED 0x20 85 #define SENSE_RECORD_SEQUENCE_ERR 0x10 86 #define SENSE_BEGINNING_OF_TAPE 0x08 87 #define SENSE_WRITE_MODE 0x04 88 #define SENSE_WRITE_PROTECT 0x02 89 #define SENSE_NOT_CAPABLE 0x01 90 91 #define SENSE_CHANNEL_ADAPTER_CODE 0xE0 92 #define SENSE_CHANNEL_ADAPTER_LOC 0x10 93 #define SENSE_REPORTING_CU 0x08 94 #define SENSE_AUTOMATIC_LOADER 0x04 95 #define SENSE_TAPE_SYNC_MODE 0x02 96 #define SENSE_TAPE_POSITIONING 0x01 97 98 /* discipline functions */ 99 struct tape_request *tape_std_read_block(struct tape_device *, size_t); 100 void tape_std_read_backward(struct tape_device *device, 101 struct tape_request *request); 102 struct tape_request *tape_std_write_block(struct tape_device *, size_t); 103 void tape_std_check_locate(struct tape_device *, struct tape_request *); 104 105 /* Some non-mtop commands. */ 106 int tape_std_assign(struct tape_device *); 107 int tape_std_unassign(struct tape_device *); 108 int tape_std_read_block_id(struct tape_device *device, __u64 *id); 109 int tape_std_display(struct tape_device *, struct display_struct *disp); 110 int tape_std_terminate_write(struct tape_device *); 111 112 /* Standard magnetic tape commands. */ 113 int tape_std_mtbsf(struct tape_device *, int); 114 int tape_std_mtbsfm(struct tape_device *, int); 115 int tape_std_mtbsr(struct tape_device *, int); 116 int tape_std_mtcompression(struct tape_device *, int); 117 int tape_std_mteom(struct tape_device *, int); 118 int tape_std_mterase(struct tape_device *, int); 119 int tape_std_mtfsf(struct tape_device *, int); 120 int tape_std_mtfsfm(struct tape_device *, int); 121 int tape_std_mtfsr(struct tape_device *, int); 122 int tape_std_mtload(struct tape_device *, int); 123 int tape_std_mtnop(struct tape_device *, int); 124 int tape_std_mtoffl(struct tape_device *, int); 125 int tape_std_mtreset(struct tape_device *, int); 126 int tape_std_mtreten(struct tape_device *, int); 127 int tape_std_mtrew(struct tape_device *, int); 128 int tape_std_mtsetblk(struct tape_device *, int); 129 int tape_std_mtunload(struct tape_device *, int); 130 int tape_std_mtweof(struct tape_device *, int); 131 132 /* Event handlers */ 133 void tape_std_default_handler(struct tape_device *); 134 void tape_std_unexpect_uchk_handler(struct tape_device *); 135 void tape_std_irq(struct tape_device *); 136 void tape_std_process_eov(struct tape_device *); 137 138 // the error recovery stuff: 139 void tape_std_error_recovery(struct tape_device *); 140 void tape_std_error_recovery_has_failed(struct tape_device *,int error_id); 141 void tape_std_error_recovery_succeded(struct tape_device *); 142 void tape_std_error_recovery_do_retry(struct tape_device *); 143 void tape_std_error_recovery_read_opposite(struct tape_device *); 144 void tape_std_error_recovery_HWBUG(struct tape_device *, int condno); 145 146 /* S390 tape types */ 147 enum s390_tape_type { 148 tape_3480, 149 tape_3490, 150 tape_3590, 151 tape_3592, 152 }; 153 154 #endif // _TAPE_STD_H 155