tape_std.h

  1/* SPDX-License-Identifier: GPL-2.0 */
  2/*
  3 *    standard tape device functions for ibm tapes.
  4 *
  5 *    Copyright IBM Corp. 2001, 2006
  6 *    Author(s): Carsten Otte <cotte@de.ibm.com>
  7 *		 Tuan Ngo-Anh <ngoanh@de.ibm.com>
  8 *		 Martin Schwidefsky <schwidefsky@de.ibm.com>
  9 */
 10
 11#ifndef _TAPE_STD_H
 12#define _TAPE_STD_H
 13
 14#include <asm/tape390.h>
 15
 16/*
 17 * Biggest block size of 256K to handle.
 18 */
 19#define MAX_BLOCKSIZE	262144
 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 *);
100void tape_std_read_backward(struct tape_device *device,
101			    struct tape_request *request);
102struct tape_request *tape_std_write_block(struct tape_device *);
103
104/* Some non-mtop commands. */
105int tape_std_assign(struct tape_device *);
106int tape_std_unassign(struct tape_device *);
107int tape_std_read_block_id(struct tape_device *device, __u64 *id);
108int tape_std_display(struct tape_device *, struct display_struct *disp);
109int tape_std_terminate_write(struct tape_device *);
110
111/* Standard magnetic tape commands. */
112int tape_std_mtbsf(struct tape_device *, int);
113int tape_std_mtbsfm(struct tape_device *, int);
114int tape_std_mtbsr(struct tape_device *, int);
115int tape_std_mtcompression(struct tape_device *, int);
116int tape_std_mteom(struct tape_device *, int);
117int tape_std_mterase(struct tape_device *, int);
118int tape_std_mtfsf(struct tape_device *, int);
119int tape_std_mtfsfm(struct tape_device *, int);
120int tape_std_mtfsr(struct tape_device *, int);
121int tape_std_mtload(struct tape_device *, int);
122int tape_std_mtnop(struct tape_device *, int);
123int tape_std_mtoffl(struct tape_device *, int);
124int tape_std_mtreset(struct tape_device *, int);
125int tape_std_mtreten(struct tape_device *, int);
126int tape_std_mtrew(struct tape_device *, int);
127int tape_std_mtsetblk(struct tape_device *, int);
128int tape_std_mtunload(struct tape_device *, int);
129int tape_std_mtweof(struct tape_device *, int);
130
131/* Event handlers */
132void tape_std_process_eov(struct tape_device *);
133
134/* S390 tape types */
135enum s390_tape_type {
136        tape_3480,
137        tape_3490,
138        tape_3590,
139        tape_3592,
140};
141
142#endif // _TAPE_STD_H