/* 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