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Diffstat (limited to '')
| -rw-r--r-- | drivers/s390/char/tape_std.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/drivers/s390/char/tape_std.h b/drivers/s390/char/tape_std.h new file mode 100644 index 000000000..53ec8e287 --- /dev/null +++ b/drivers/s390/char/tape_std.h @@ -0,0 +1,155 @@ +/* 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 |