| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * standard tape device functions for ibm tapes. |
| * |
| * Copyright IBM Corp. 2001, 2006 |
| * Author(s): Carsten Otte <cotte@de.ibm.com> |
| * Tuan Ngo-Anh <ngoanh@de.ibm.com> |
| * Martin Schwidefsky <schwidefsky@de.ibm.com> |
| */ |
| |
| #ifndef _TAPE_STD_H |
| #define _TAPE_STD_H |
| |
| #include <asm/tape390.h> |
| |
| /* |
| * Biggest block size to handle. Currently 64K because we only build |
| * channel programs without data chaining. |
| */ |
| #define MAX_BLOCKSIZE 65535 |
| |
| /* |
| * The CCW commands for the Tape type of command. |
| */ |
| #define INVALID_00 0x00 /* Invalid cmd */ |
| #define BACKSPACEBLOCK 0x27 /* Back Space block */ |
| #define BACKSPACEFILE 0x2f /* Back Space file */ |
| #define DATA_SEC_ERASE 0x97 /* Data security erase */ |
| #define ERASE_GAP 0x17 /* Erase Gap */ |
| #define FORSPACEBLOCK 0x37 /* Forward space block */ |
| #define FORSPACEFILE 0x3F /* Forward Space file */ |
| #define FORCE_STREAM_CNT 0xEB /* Forced streaming count # */ |
| #define NOP 0x03 /* No operation */ |
| #define READ_FORWARD 0x02 /* Read forward */ |
| #define REWIND 0x07 /* Rewind */ |
| #define REWIND_UNLOAD 0x0F /* Rewind and Unload */ |
| #define SENSE 0x04 /* Sense */ |
| #define NEW_MODE_SET 0xEB /* Guess it is Mode set */ |
| #define WRITE_CMD 0x01 /* Write */ |
| #define WRITETAPEMARK 0x1F /* Write Tape Mark */ |
| |
| #define ASSIGN 0xB7 /* 3420 REJECT,3480 OK */ |
| #define CONTROL_ACCESS 0xE3 /* Set high speed */ |
| #define DIAG_MODE_SET 0x0B /* 3420 NOP, 3480 REJECT */ |
| #define LOAD_DISPLAY 0x9F /* 3420 REJECT,3480 OK */ |
| #define LOCATE 0x4F /* 3420 REJ, 3480 NOP */ |
| #define LOOP_WRITE_TO_READ 0x8B /* 3480 REJECT */ |
| #define MODE_SET_DB 0xDB /* 3420 REJECT,3480 OK */ |
| #define MODE_SET_C3 0xC3 /* for 3420 */ |
| #define MODE_SET_CB 0xCB /* for 3420 */ |
| #define MODE_SET_D3 0xD3 /* for 3420 */ |
| #define READ_BACKWARD 0x0C /* */ |
| #define READ_BLOCK_ID 0x22 /* 3420 REJECT,3480 OK */ |
| #define READ_BUFFER 0x12 /* 3420 REJECT,3480 OK */ |
| #define READ_BUFF_LOG 0x24 /* 3420 REJECT,3480 OK */ |
| #define RELEASE 0xD4 /* 3420 NOP, 3480 REJECT */ |
| #define REQ_TRK_IN_ERROR 0x1B /* 3420 NOP, 3480 REJECT */ |
| #define RESERVE 0xF4 /* 3420 NOP, 3480 REJECT */ |
| #define SENSE_GROUP_ID 0x34 /* 3420 REJECT,3480 OK */ |
| #define SENSE_ID 0xE4 /* 3420 REJECT,3480 OK */ |
| #define READ_DEV_CHAR 0x64 /* Read device characteristics */ |
| #define SET_DIAGNOSE 0x4B /* 3420 NOP, 3480 REJECT */ |
| #define SET_GROUP_ID 0xAF /* 3420 REJECT,3480 OK */ |
| #define SET_TAPE_WRITE_IMMED 0xC3 /* for 3480 */ |
| #define SUSPEND 0x5B /* 3420 REJ, 3480 NOP */ |
| #define SYNC 0x43 /* Synchronize (flush buffer) */ |
| #define UNASSIGN 0xC7 /* 3420 REJECT,3480 OK */ |
| #define PERF_SUBSYS_FUNC 0x77 /* 3490 CMD */ |
| #define READ_CONFIG_DATA 0xFA /* 3490 CMD */ |
| #define READ_MESSAGE_ID 0x4E /* 3490 CMD */ |
| #define READ_SUBSYS_DATA 0x3E /* 3490 CMD */ |
| #define SET_INTERFACE_ID 0x73 /* 3490 CMD */ |
| |
| #define SENSE_COMMAND_REJECT 0x80 |
| #define SENSE_INTERVENTION_REQUIRED 0x40 |
| #define SENSE_BUS_OUT_CHECK 0x20 |
| #define SENSE_EQUIPMENT_CHECK 0x10 |
| #define SENSE_DATA_CHECK 0x08 |
| #define SENSE_OVERRUN 0x04 |
| #define SENSE_DEFERRED_UNIT_CHECK 0x02 |
| #define SENSE_ASSIGNED_ELSEWHERE 0x01 |
| |
| #define SENSE_LOCATE_FAILURE 0x80 |
| #define SENSE_DRIVE_ONLINE 0x40 |
| #define SENSE_RESERVED 0x20 |
| #define SENSE_RECORD_SEQUENCE_ERR 0x10 |
| #define SENSE_BEGINNING_OF_TAPE 0x08 |
| #define SENSE_WRITE_MODE 0x04 |
| #define SENSE_WRITE_PROTECT 0x02 |
| #define SENSE_NOT_CAPABLE 0x01 |
| |
| #define SENSE_CHANNEL_ADAPTER_CODE 0xE0 |
| #define SENSE_CHANNEL_ADAPTER_LOC 0x10 |
| #define SENSE_REPORTING_CU 0x08 |
| #define SENSE_AUTOMATIC_LOADER 0x04 |
| #define SENSE_TAPE_SYNC_MODE 0x02 |
| #define SENSE_TAPE_POSITIONING 0x01 |
| |
| /* discipline functions */ |
| struct tape_request *tape_std_read_block(struct tape_device *, size_t); |
| void tape_std_read_backward(struct tape_device *device, |
| struct tape_request *request); |
| struct tape_request *tape_std_write_block(struct tape_device *, size_t); |
| void tape_std_check_locate(struct tape_device *, struct tape_request *); |
| |
| /* Some non-mtop commands. */ |
| int tape_std_assign(struct tape_device *); |
| int tape_std_unassign(struct tape_device *); |
| int tape_std_read_block_id(struct tape_device *device, __u64 *id); |
| int tape_std_display(struct tape_device *, struct display_struct *disp); |
| int tape_std_terminate_write(struct tape_device *); |
| |
| /* Standard magnetic tape commands. */ |
| int tape_std_mtbsf(struct tape_device *, int); |
| int tape_std_mtbsfm(struct tape_device *, int); |
| int tape_std_mtbsr(struct tape_device *, int); |
| int tape_std_mtcompression(struct tape_device *, int); |
| int tape_std_mteom(struct tape_device *, int); |
| int tape_std_mterase(struct tape_device *, int); |
| int tape_std_mtfsf(struct tape_device *, int); |
| int tape_std_mtfsfm(struct tape_device *, int); |
| int tape_std_mtfsr(struct tape_device *, int); |
| int tape_std_mtload(struct tape_device *, int); |
| int tape_std_mtnop(struct tape_device *, int); |
| int tape_std_mtoffl(struct tape_device *, int); |
| int tape_std_mtreset(struct tape_device *, int); |
| int tape_std_mtreten(struct tape_device *, int); |
| int tape_std_mtrew(struct tape_device *, int); |
| int tape_std_mtsetblk(struct tape_device *, int); |
| int tape_std_mtunload(struct tape_device *, int); |
| int tape_std_mtweof(struct tape_device *, int); |
| |
| /* Event handlers */ |
| void tape_std_default_handler(struct tape_device *); |
| void tape_std_unexpect_uchk_handler(struct tape_device *); |
| void tape_std_irq(struct tape_device *); |
| void tape_std_process_eov(struct tape_device *); |
| |
| // the error recovery stuff: |
| void tape_std_error_recovery(struct tape_device *); |
| void tape_std_error_recovery_has_failed(struct tape_device *,int error_id); |
| void tape_std_error_recovery_succeded(struct tape_device *); |
| void tape_std_error_recovery_do_retry(struct tape_device *); |
| void tape_std_error_recovery_read_opposite(struct tape_device *); |
| void tape_std_error_recovery_HWBUG(struct tape_device *, int condno); |
| |
| /* S390 tape types */ |
| enum s390_tape_type { |
| tape_3480, |
| tape_3490, |
| tape_3590, |
| tape_3592, |
| }; |
| |
| #endif // _TAPE_STD_H |
