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/mtio.h>
39
40#define FT_SECTOR(x)		(x+1)	/* sector offset into real sector */
41#define FT_SECTOR_SIZE		1024
42#define FT_SECTORS_PER_SEGMENT	  32
43#define FT_ECC_SECTORS		   3
44#define FT_SEGMENT_SIZE		((FT_SECTORS_PER_SEGMENT - FT_ECC_SECTORS) * FT_SECTOR_SIZE)
45#define FT_BUFF_SIZE    (FT_SECTORS_PER_SEGMENT * FT_SECTOR_SIZE)
46
47/*
48 *   bits of the minor device number that define drive selection
49 *   methods. Could be used one day to access multiple tape
50 *   drives on the same controller.
51 */
52#define FTAPE_SEL_A     0
53#define FTAPE_SEL_B     1
54#define FTAPE_SEL_C     2
55#define FTAPE_SEL_D     3
56#define FTAPE_SEL_MASK     3
57#define FTAPE_SEL(unit) ((unit) & FTAPE_SEL_MASK)
58#define FTAPE_NO_REWIND 4	/* mask for minor nr */
59
60/* the following two may be reported when MTIOCGET is requested ... */
61typedef union {
62	struct {
63		__u8 error;
64		__u8 command;
65	} error;
66	long space;
67} ft_drive_error;
68typedef union {
69	struct {
70		__u8 drive_status;
71		__u8 drive_config;
72		__u8 tape_status;
73	} status;
74	long space;
75} ft_drive_status;
76
77#ifdef __KERNEL__
78
79#define FT_RQM_DELAY    12
80#define FT_MILLISECOND  1
81#define FT_SECOND       1000
82#define FT_FOREVER      -1
83#ifndef HZ
84#error "HZ undefined."
85#endif
86#define FT_USPT         (1000000/HZ) /* microseconds per tick */
87
88/* This defines the number of retries that the driver will allow
89 * before giving up (and letting a higher level handle the error).
90 */
91#ifdef TESTING
92#define FT_SOFT_RETRIES 1	   /* number of low level retries */
93#define FT_RETRIES_ON_ECC_ERROR 3  /* ecc error when correcting segment */
94#else
95#define FT_SOFT_RETRIES 6	   /* number of low level retries (triple) */
96#define FT_RETRIES_ON_ECC_ERROR 3  /* ecc error when correcting segment */
97#endif
98
99#ifndef THE_FTAPE_MAINTAINER
100#define THE_FTAPE_MAINTAINER "the ftape maintainer"
101#endif
102
103/* Initialize missing configuration parameters.
104 */
105#ifndef CONFIG_FT_NR_BUFFERS
106# define CONFIG_FT_NR_BUFFERS 3
107#endif
108#ifndef CONFIG_FT_FDC_THR
109# define CONFIG_FT_FDC_THR 8
110#endif
111#ifndef CONFIG_FT_FDC_MAX_RATE
112# define CONFIG_FT_FDC_MAX_RATE 2000
113#endif
114#ifndef CONFIG_FT_FDC_BASE
115# define CONFIG_FT_FDC_BASE 0
116#endif
117#ifndef CONFIG_FT_FDC_IRQ
118# define CONFIG_FT_FDC_IRQ  0
119#endif
120#ifndef CONFIG_FT_FDC_DMA
121# define CONFIG_FT_FDC_DMA  0
122#endif
123
124/* Turn some booleans into numbers.
125 */
126#ifdef CONFIG_FT_PROBE_FC10
127# undef CONFIG_FT_PROBE_FC10
128# define CONFIG_FT_PROBE_FC10 1
129#else
130# define CONFIG_FT_PROBE_FC10 0
131#endif
132#ifdef CONFIG_FT_MACH2
133# undef CONFIG_FT_MACH2
134# define CONFIG_FT_MACH2 1
135#else
136# define CONFIG_FT_MACH2 0
137#endif
138
139/* Insert default settings
140 */
141#if CONFIG_FT_PROBE_FC10 == 1
142# if CONFIG_FT_FDC_BASE == 0
143#  undef  CONFIG_FT_FDC_BASE
144#  define CONFIG_FT_FDC_BASE 0x180
145# endif
146# if CONFIG_FT_FDC_IRQ == 0
147#  undef  CONFIG_FT_FDC_IRQ
148#  define CONFIG_FT_FDC_IRQ 9
149# endif
150# if CONFIG_FT_FDC_DMA == 0
151#  undef  CONFIG_FT_FDC_DMA
152#  define CONFIG_FT_FDC_DMA 3
153# endif
154#elif CONFIG_FT_MACH2 == 1    /* CONFIG_FT_PROBE_FC10 == 1 */
155# if CONFIG_FT_FDC_BASE == 0
156#  undef  CONFIG_FT_FDC_BASE
157#  define CONFIG_FT_FDC_BASE 0x1E0
158# endif
159# if CONFIG_FT_FDC_IRQ == 0
160#  undef  CONFIG_FT_FDC_IRQ
161#  define CONFIG_FT_FDC_IRQ 6
162# endif
163# if CONFIG_FT_FDC_DMA == 0
164#  undef  CONFIG_FT_FDC_DMA
165#  define CONFIG_FT_FDC_DMA 2
166# endif
167#elif defined(CONFIG_FT_ALT_FDC)  /* CONFIG_FT_MACH2 */
168# if CONFIG_FT_FDC_BASE == 0
169#  undef  CONFIG_FT_FDC_BASE
170#  define CONFIG_FT_FDC_BASE 0x370
171# endif
172# if CONFIG_FT_FDC_IRQ == 0
173#  undef  CONFIG_FT_FDC_IRQ
174#  define CONFIG_FT_FDC_IRQ 6
175# endif
176# if CONFIG_FT_FDC_DMA == 0
177#  undef  CONFIG_FT_FDC_DMA
178#  define CONFIG_FT_FDC_DMA 2
179# endif
180#else                          /* CONFIG_FT_ALT_FDC */
181# if CONFIG_FT_FDC_BASE == 0
182#  undef  CONFIG_FT_FDC_BASE
183#  define CONFIG_FT_FDC_BASE 0x3f0
184# endif
185# if CONFIG_FT_FDC_IRQ == 0
186#  undef  CONFIG_FT_FDC_IRQ
187#  define CONFIG_FT_FDC_IRQ 6
188# endif
189# if CONFIG_FT_FDC_DMA == 0
190#  undef  CONFIG_FT_FDC_DMA
191#  define CONFIG_FT_FDC_DMA 2
192# endif
193#endif                         /* standard FDC */
194
195/*      some useful macro's
196 */
197#define NR_ITEMS(x)     (int)(sizeof(x)/ sizeof(*x))
198
199#endif  /* __KERNEL__ */
200
201#endif
202