aboutsummaryrefslogtreecommitdiff
path: root/drivers/s390/char/tape_std.h
blob: 8c760c03683217a60e4984d04dc2902bc350e316 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
/*
 *    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