Linux kernel mirror (for testing)
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linux
1#ifndef _FTAPE_H
2#define _FTAPE_H
3
4/*
5 * Copyright (C) 1994-1996 Bas Laarhoven,
6 * (C) 1996-1997 Claus-Justus Heine.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; see the file COPYING. If not, write to
20 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
21
22 *
23 * $Source: /homes/cvs/ftape-stacked/include/linux/ftape.h,v $
24 * $Revision: 1.17.6.4 $
25 * $Date: 1997/11/25 01:52:54 $
26 *
27 * This file contains global definitions, typedefs and macro's
28 * for the QIC-40/80/3010/3020 floppy-tape driver for Linux.
29 */
30
31#define FTAPE_VERSION "ftape v3.04d 25/11/97"
32
33#ifdef __KERNEL__
34#include <linux/interrupt.h>
35#include <linux/mm.h>
36#endif
37#include <linux/types.h>
38#include <linux/config.h>
39#include <linux/mtio.h>
40
41#define FT_SECTOR(x) (x+1) /* sector offset into real sector */
42#define FT_SECTOR_SIZE 1024
43#define FT_SECTORS_PER_SEGMENT 32
44#define FT_ECC_SECTORS 3
45#define FT_SEGMENT_SIZE ((FT_SECTORS_PER_SEGMENT - FT_ECC_SECTORS) * FT_SECTOR_SIZE)
46#define FT_BUFF_SIZE (FT_SECTORS_PER_SEGMENT * FT_SECTOR_SIZE)
47
48/*
49 * bits of the minor device number that define drive selection
50 * methods. Could be used one day to access multiple tape
51 * drives on the same controller.
52 */
53#define FTAPE_SEL_A 0
54#define FTAPE_SEL_B 1
55#define FTAPE_SEL_C 2
56#define FTAPE_SEL_D 3
57#define FTAPE_SEL_MASK 3
58#define FTAPE_SEL(unit) ((unit) & FTAPE_SEL_MASK)
59#define FTAPE_NO_REWIND 4 /* mask for minor nr */
60
61/* the following two may be reported when MTIOCGET is requested ... */
62typedef union {
63 struct {
64 __u8 error;
65 __u8 command;
66 } error;
67 long space;
68} ft_drive_error;
69typedef union {
70 struct {
71 __u8 drive_status;
72 __u8 drive_config;
73 __u8 tape_status;
74 } status;
75 long space;
76} ft_drive_status;
77
78#ifdef __KERNEL__
79
80#define FT_RQM_DELAY 12
81#define FT_MILLISECOND 1
82#define FT_SECOND 1000
83#define FT_FOREVER -1
84#ifndef HZ
85#error "HZ undefined."
86#endif
87#define FT_USPT (1000000/HZ) /* microseconds per tick */
88
89/* This defines the number of retries that the driver will allow
90 * before giving up (and letting a higher level handle the error).
91 */
92#ifdef TESTING
93#define FT_SOFT_RETRIES 1 /* number of low level retries */
94#define FT_RETRIES_ON_ECC_ERROR 3 /* ecc error when correcting segment */
95#else
96#define FT_SOFT_RETRIES 6 /* number of low level retries (triple) */
97#define FT_RETRIES_ON_ECC_ERROR 3 /* ecc error when correcting segment */
98#endif
99
100#ifndef THE_FTAPE_MAINTAINER
101#define THE_FTAPE_MAINTAINER "the ftape maintainer"
102#endif
103
104/* Initialize missing configuration parameters.
105 */
106#ifndef CONFIG_FT_NR_BUFFERS
107# define CONFIG_FT_NR_BUFFERS 3
108#endif
109#ifndef CONFIG_FT_FDC_THR
110# define CONFIG_FT_FDC_THR 8
111#endif
112#ifndef CONFIG_FT_FDC_MAX_RATE
113# define CONFIG_FT_FDC_MAX_RATE 2000
114#endif
115#ifndef CONFIG_FT_FDC_BASE
116# define CONFIG_FT_FDC_BASE 0
117#endif
118#ifndef CONFIG_FT_FDC_IRQ
119# define CONFIG_FT_FDC_IRQ 0
120#endif
121#ifndef CONFIG_FT_FDC_DMA
122# define CONFIG_FT_FDC_DMA 0
123#endif
124
125/* Turn some booleans into numbers.
126 */
127#ifdef CONFIG_FT_PROBE_FC10
128# undef CONFIG_FT_PROBE_FC10
129# define CONFIG_FT_PROBE_FC10 1
130#else
131# define CONFIG_FT_PROBE_FC10 0
132#endif
133#ifdef CONFIG_FT_MACH2
134# undef CONFIG_FT_MACH2
135# define CONFIG_FT_MACH2 1
136#else
137# define CONFIG_FT_MACH2 0
138#endif
139
140/* Insert default settings
141 */
142#if CONFIG_FT_PROBE_FC10 == 1
143# if CONFIG_FT_FDC_BASE == 0
144# undef CONFIG_FT_FDC_BASE
145# define CONFIG_FT_FDC_BASE 0x180
146# endif
147# if CONFIG_FT_FDC_IRQ == 0
148# undef CONFIG_FT_FDC_IRQ
149# define CONFIG_FT_FDC_IRQ 9
150# endif
151# if CONFIG_FT_FDC_DMA == 0
152# undef CONFIG_FT_FDC_DMA
153# define CONFIG_FT_FDC_DMA 3
154# endif
155#elif CONFIG_FT_MACH2 == 1 /* CONFIG_FT_PROBE_FC10 == 1 */
156# if CONFIG_FT_FDC_BASE == 0
157# undef CONFIG_FT_FDC_BASE
158# define CONFIG_FT_FDC_BASE 0x1E0
159# endif
160# if CONFIG_FT_FDC_IRQ == 0
161# undef CONFIG_FT_FDC_IRQ
162# define CONFIG_FT_FDC_IRQ 6
163# endif
164# if CONFIG_FT_FDC_DMA == 0
165# undef CONFIG_FT_FDC_DMA
166# define CONFIG_FT_FDC_DMA 2
167# endif
168#elif defined(CONFIG_FT_ALT_FDC) /* CONFIG_FT_MACH2 */
169# if CONFIG_FT_FDC_BASE == 0
170# undef CONFIG_FT_FDC_BASE
171# define CONFIG_FT_FDC_BASE 0x370
172# endif
173# if CONFIG_FT_FDC_IRQ == 0
174# undef CONFIG_FT_FDC_IRQ
175# define CONFIG_FT_FDC_IRQ 6
176# endif
177# if CONFIG_FT_FDC_DMA == 0
178# undef CONFIG_FT_FDC_DMA
179# define CONFIG_FT_FDC_DMA 2
180# endif
181#else /* CONFIG_FT_ALT_FDC */
182# if CONFIG_FT_FDC_BASE == 0
183# undef CONFIG_FT_FDC_BASE
184# define CONFIG_FT_FDC_BASE 0x3f0
185# endif
186# if CONFIG_FT_FDC_IRQ == 0
187# undef CONFIG_FT_FDC_IRQ
188# define CONFIG_FT_FDC_IRQ 6
189# endif
190# if CONFIG_FT_FDC_DMA == 0
191# undef CONFIG_FT_FDC_DMA
192# define CONFIG_FT_FDC_DMA 2
193# endif
194#endif /* standard FDC */
195
196/* some useful macro's
197 */
198#define NR_ITEMS(x) (int)(sizeof(x)/ sizeof(*x))
199
200#endif /* __KERNEL__ */
201
202#endif