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 */ 99struct tape_request *tape_std_read_block(struct tape_device *, size_t); 100void tape_std_read_backward(struct tape_device *device, 101 struct tape_request *request); 102struct tape_request *tape_std_write_block(struct tape_device *, size_t); 103void tape_std_check_locate(struct tape_device *, struct tape_request *); 104 105/* Some non-mtop commands. */ 106int tape_std_assign(struct tape_device *); 107int tape_std_unassign(struct tape_device *); 108int tape_std_read_block_id(struct tape_device *device, __u64 *id); 109int tape_std_display(struct tape_device *, struct display_struct *disp); 110int tape_std_terminate_write(struct tape_device *); 111 112/* Standard magnetic tape commands. */ 113int tape_std_mtbsf(struct tape_device *, int); 114int tape_std_mtbsfm(struct tape_device *, int); 115int tape_std_mtbsr(struct tape_device *, int); 116int tape_std_mtcompression(struct tape_device *, int); 117int tape_std_mteom(struct tape_device *, int); 118int tape_std_mterase(struct tape_device *, int); 119int tape_std_mtfsf(struct tape_device *, int); 120int tape_std_mtfsfm(struct tape_device *, int); 121int tape_std_mtfsr(struct tape_device *, int); 122int tape_std_mtload(struct tape_device *, int); 123int tape_std_mtnop(struct tape_device *, int); 124int tape_std_mtoffl(struct tape_device *, int); 125int tape_std_mtreset(struct tape_device *, int); 126int tape_std_mtreten(struct tape_device *, int); 127int tape_std_mtrew(struct tape_device *, int); 128int tape_std_mtsetblk(struct tape_device *, int); 129int tape_std_mtunload(struct tape_device *, int); 130int tape_std_mtweof(struct tape_device *, int); 131 132/* Event handlers */ 133void tape_std_default_handler(struct tape_device *); 134void tape_std_unexpect_uchk_handler(struct tape_device *); 135void tape_std_irq(struct tape_device *); 136void tape_std_process_eov(struct tape_device *); 137 138// the error recovery stuff: 139void tape_std_error_recovery(struct tape_device *); 140void tape_std_error_recovery_has_failed(struct tape_device *,int error_id); 141void tape_std_error_recovery_succeded(struct tape_device *); 142void tape_std_error_recovery_do_retry(struct tape_device *); 143void tape_std_error_recovery_read_opposite(struct tape_device *); 144void tape_std_error_recovery_HWBUG(struct tape_device *, int condno); 145 146/* S390 tape types */ 147enum s390_tape_type { 148 tape_3480, 149 tape_3490, 150 tape_3590, 151 tape_3592, 152}; 153 154#endif // _TAPE_STD_H 155