1 /* 2 * drivers/s390/char/tape_34xx.h 3 * standard tape device functions for ibm tapes. 4 * 5 * S390 and zSeries version 6 * Copyright (C) 2001,2002 IBM Deutschland Entwicklung GmbH, IBM Corporation 7 * Author(s): Carsten Otte <cotte@de.ibm.com> 8 * Tuan Ngo-Anh <ngoanh@de.ibm.com> 9 * Martin Schwidefsky <schwidefsky@de.ibm.com> 10 */ 11 12 #ifndef _TAPE_STD_H 13 #define _TAPE_STD_H 14 15 #include <asm/tape390.h> 16 17 /* 18 * Biggest block size to handle. Currently 64K because we only build 19 * channel programs without data chaining. 20 */ 21 #define MAX_BLOCKSIZE 65535 22 23 /* 24 * The CCW commands for the Tape type of command. 25 */ 26 #define INVALID_00 0x00 /* Invalid cmd */ 27 #define BACKSPACEBLOCK 0x27 /* Back Space block */ 28 #define BACKSPACEFILE 0x2f /* Back Space file */ 29 #define DATA_SEC_ERASE 0x97 /* Data security erase */ 30 #define ERASE_GAP 0x17 /* Erase Gap */ 31 #define FORSPACEBLOCK 0x37 /* Forward space block */ 32 #define FORSPACEFILE 0x3F /* Forward Space file */ 33 #define FORCE_STREAM_CNT 0xEB /* Forced streaming count # */ 34 #define NOP 0x03 /* No operation */ 35 #define READ_FORWARD 0x02 /* Read forward */ 36 #define REWIND 0x07 /* Rewind */ 37 #define REWIND_UNLOAD 0x0F /* Rewind and Unload */ 38 #define SENSE 0x04 /* Sense */ 39 #define NEW_MODE_SET 0xEB /* Guess it is Mode set */ 40 #define WRITE_CMD 0x01 /* Write */ 41 #define WRITETAPEMARK 0x1F /* Write Tape Mark */ 42 43 #define ASSIGN 0xB7 /* 3420 REJECT,3480 OK */ 44 #define CONTROL_ACCESS 0xE3 /* Set high speed */ 45 #define DIAG_MODE_SET 0x0B /* 3420 NOP, 3480 REJECT */ 46 #define LOAD_DISPLAY 0x9F /* 3420 REJECT,3480 OK */ 47 #define LOCATE 0x4F /* 3420 REJ, 3480 NOP */ 48 #define LOOP_WRITE_TO_READ 0x8B /* 3480 REJECT */ 49 #define MODE_SET_DB 0xDB /* 3420 REJECT,3480 OK */ 50 #define MODE_SET_C3 0xC3 /* for 3420 */ 51 #define MODE_SET_CB 0xCB /* for 3420 */ 52 #define MODE_SET_D3 0xD3 /* for 3420 */ 53 #define READ_BACKWARD 0x0C /* */ 54 #define READ_BLOCK_ID 0x22 /* 3420 REJECT,3480 OK */ 55 #define READ_BUFFER 0x12 /* 3420 REJECT,3480 OK */ 56 #define READ_BUFF_LOG 0x24 /* 3420 REJECT,3480 OK */ 57 #define RELEASE 0xD4 /* 3420 NOP, 3480 REJECT */ 58 #define REQ_TRK_IN_ERROR 0x1B /* 3420 NOP, 3480 REJECT */ 59 #define RESERVE 0xF4 /* 3420 NOP, 3480 REJECT */ 60 #define SENSE_GROUP_ID 0x34 /* 3420 REJECT,3480 OK */ 61 #define SENSE_ID 0xE4 /* 3420 REJECT,3480 OK */ 62 #define READ_DEV_CHAR 0x64 /* Read device characteristics */ 63 #define SET_DIAGNOSE 0x4B /* 3420 NOP, 3480 REJECT */ 64 #define SET_GROUP_ID 0xAF /* 3420 REJECT,3480 OK */ 65 #define SET_TAPE_WRITE_IMMED 0xC3 /* for 3480 */ 66 #define SUSPEND 0x5B /* 3420 REJ, 3480 NOP */ 67 #define SYNC 0x43 /* Synchronize (flush buffer) */ 68 #define UNASSIGN 0xC7 /* 3420 REJECT,3480 OK */ 69 #define PERF_SUBSYS_FUNC 0x77 /* 3490 CMD */ 70 #define READ_CONFIG_DATA 0xFA /* 3490 CMD */ 71 #define READ_MESSAGE_ID 0x4E /* 3490 CMD */ 72 #define READ_SUBSYS_DATA 0x3E /* 3490 CMD */ 73 #define SET_INTERFACE_ID 0x73 /* 3490 CMD */ 74 75 #define SENSE_COMMAND_REJECT 0x80 76 #define SENSE_INTERVENTION_REQUIRED 0x40 77 #define SENSE_BUS_OUT_CHECK 0x20 78 #define SENSE_EQUIPMENT_CHECK 0x10 79 #define SENSE_DATA_CHECK 0x08 80 #define SENSE_OVERRUN 0x04 81 #define SENSE_DEFERRED_UNIT_CHECK 0x02 82 #define SENSE_ASSIGNED_ELSEWHERE 0x01 83 84 #define SENSE_LOCATE_FAILURE 0x80 85 #define SENSE_DRIVE_ONLINE 0x40 86 #define SENSE_RESERVED 0x20 87 #define SENSE_RECORD_SEQUENCE_ERR 0x10 88 #define SENSE_BEGINNING_OF_TAPE 0x08 89 #define SENSE_WRITE_MODE 0x04 90 #define SENSE_WRITE_PROTECT 0x02 91 #define SENSE_NOT_CAPABLE 0x01 92 93 #define SENSE_CHANNEL_ADAPTER_CODE 0xE0 94 #define SENSE_CHANNEL_ADAPTER_LOC 0x10 95 #define SENSE_REPORTING_CU 0x08 96 #define SENSE_AUTOMATIC_LOADER 0x04 97 #define SENSE_TAPE_SYNC_MODE 0x02 98 #define SENSE_TAPE_POSITIONING 0x01 99 100 /* discipline functions */ 101 struct tape_request *tape_std_read_block(struct tape_device *, size_t); 102 void tape_std_read_backward(struct tape_device *device, 103 struct tape_request *request); 104 struct tape_request *tape_std_write_block(struct tape_device *, size_t); 105 struct tape_request *tape_std_bread(struct tape_device *, struct request *); 106 void tape_std_free_bread(struct tape_request *); 107 void tape_std_check_locate(struct tape_device *, struct tape_request *); 108 struct tape_request *tape_std_bwrite(struct request *, 109 struct tape_device *, int); 110 111 /* Some non-mtop commands. */ 112 int tape_std_assign(struct tape_device *); 113 int tape_std_unassign(struct tape_device *); 114 int tape_std_read_block_id(struct tape_device *device, __u64 *id); 115 int tape_std_display(struct tape_device *, struct display_struct *disp); 116 int tape_std_terminate_write(struct tape_device *); 117 118 /* Standard magnetic tape commands. */ 119 int tape_std_mtbsf(struct tape_device *, int); 120 int tape_std_mtbsfm(struct tape_device *, int); 121 int tape_std_mtbsr(struct tape_device *, int); 122 int tape_std_mtcompression(struct tape_device *, int); 123 int tape_std_mteom(struct tape_device *, int); 124 int tape_std_mterase(struct tape_device *, int); 125 int tape_std_mtfsf(struct tape_device *, int); 126 int tape_std_mtfsfm(struct tape_device *, int); 127 int tape_std_mtfsr(struct tape_device *, int); 128 int tape_std_mtload(struct tape_device *, int); 129 int tape_std_mtnop(struct tape_device *, int); 130 int tape_std_mtoffl(struct tape_device *, int); 131 int tape_std_mtreset(struct tape_device *, int); 132 int tape_std_mtreten(struct tape_device *, int); 133 int tape_std_mtrew(struct tape_device *, int); 134 int tape_std_mtsetblk(struct tape_device *, int); 135 int tape_std_mtunload(struct tape_device *, int); 136 int tape_std_mtweof(struct tape_device *, int); 137 138 /* Event handlers */ 139 void tape_std_default_handler(struct tape_device *); 140 void tape_std_unexpect_uchk_handler(struct tape_device *); 141 void tape_std_irq(struct tape_device *); 142 void tape_std_process_eov(struct tape_device *); 143 144 // the error recovery stuff: 145 void tape_std_error_recovery(struct tape_device *); 146 void tape_std_error_recovery_has_failed(struct tape_device *,int error_id); 147 void tape_std_error_recovery_succeded(struct tape_device *); 148 void tape_std_error_recovery_do_retry(struct tape_device *); 149 void tape_std_error_recovery_read_opposite(struct tape_device *); 150 void tape_std_error_recovery_HWBUG(struct tape_device *, int condno); 151 152 #endif // _TAPE_STD_H 153