File: /usr/src/linux/drivers/char/ftape/lowlevel/ftape-init.c
1 /*
2 * Copyright (C) 1993-1996 Bas Laarhoven,
3 * (C) 1996-1997 Claus-Justus Heine.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; see the file COPYING. If not, write to
17 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
18
19 *
20 * This file contains the code that interfaces the kernel
21 * for the QIC-40/80/3010/3020 floppy-tape driver for Linux.
22 */
23
24 #include <linux/config.h>
25 #include <linux/module.h>
26 #include <linux/version.h>
27 #include <linux/errno.h>
28 #include <linux/fs.h>
29 #include <linux/kernel.h>
30 #include <linux/signal.h>
31 #include <linux/major.h>
32
33 #include <linux/ftape.h>
34 #if LINUX_VERSION_CODE >= KERNEL_VER(2,1,16)
35 #include <linux/init.h>
36 #else
37 #define __initdata
38 #define __initfunc(__arg) __arg
39 #endif
40 #include <linux/qic117.h>
41 #ifdef CONFIG_ZFTAPE
42 #include <linux/zftape.h>
43 #endif
44
45 #include "../lowlevel/ftape-init.h"
46 #include "../lowlevel/ftape_syms.h"
47 #include "../lowlevel/ftape-io.h"
48 #include "../lowlevel/ftape-read.h"
49 #include "../lowlevel/ftape-write.h"
50 #include "../lowlevel/ftape-ctl.h"
51 #include "../lowlevel/ftape-rw.h"
52 #include "../lowlevel/fdc-io.h"
53 #include "../lowlevel/ftape-buffer.h"
54 #include "../lowlevel/ftape-proc.h"
55 #include "../lowlevel/ftape-tracing.h"
56
57 /* Global vars.
58 */
59 char ft_src[] __initdata = "$Source: /homes/cvs/ftape-stacked/ftape/lowlevel/ftape-init.c,v $";
60 char ft_rev[] __initdata = "$Revision: 1.8 $";
61 char ft_dat[] __initdata = "$Date: 1997/11/06 00:38:08 $";
62
63
64 /* Called by modules package when installing the driver
65 * or by kernel during the initialization phase
66 */
67 int __init ftape_init(void)
68 {
69 TRACE_FUN(ft_t_flow);
70
71 #ifdef MODULE
72 printk(KERN_INFO FTAPE_VERSION "\n");
73 if (TRACE_LEVEL >= ft_t_info) {
74 printk(
75 KERN_INFO "(c) 1993-1996 Bas Laarhoven (bas@vimec.nl)\n"
76 KERN_INFO "(c) 1995-1996 Kai Harrekilde-Petersen (khp@dolphinics.no)\n"
77 KERN_INFO "(c) 1996-1997 Claus-Justus Heine (claus@momo.math.rwth-aachen.de)\n"
78 KERN_INFO "QIC-117 driver for QIC-40/80/3010/3020 floppy tape drives\n"
79 KERN_INFO "Compiled for Linux version %s"
80 #ifdef MODVERSIONS
81 " with versioned symbols"
82 #endif
83 "\n", UTS_RELEASE);
84 }
85 #else /* !MODULE */
86 /* print a short no-nonsense boot message */
87 printk(KERN_INFO FTAPE_VERSION " for Linux " UTS_RELEASE "\n");
88 #endif /* MODULE */
89 TRACE(ft_t_info, "installing QIC-117 floppy tape hardware drive ... ");
90 TRACE(ft_t_info, "ftape_init @ 0x%p", ftape_init);
91 /* Allocate the DMA buffers. They are deallocated at cleanup() time.
92 */
93 #if TESTING
94 #ifdef MODULE
95 while (ftape_set_nr_buffers(CONFIG_FT_NR_BUFFERS) < 0) {
96 ftape_sleep(FT_SECOND/20);
97 if (signal_pending(current)) {
98 (void)ftape_set_nr_buffers(0);
99 TRACE(ft_t_bug,
100 "Killed by signal while allocating buffers.");
101 TRACE_ABORT(-EINTR,
102 ft_t_bug, "Free up memory and retry");
103 }
104 }
105 #else
106 TRACE_CATCH(ftape_set_nr_buffers(CONFIG_FT_NR_BUFFERS),
107 (void)ftape_set_nr_buffers(0));
108 #endif
109 #else
110 TRACE_CATCH(ftape_set_nr_buffers(CONFIG_FT_NR_BUFFERS),
111 (void)ftape_set_nr_buffers(0));
112 #endif
113 ft_drive_sel = -1;
114 ft_failure = 1; /* inhibit any operation but open */
115 ftape_udelay_calibrate(); /* must be before fdc_wait_calibrate ! */
116 fdc_wait_calibrate();
117 #if LINUX_VERSION_CODE < KERNEL_VER(2,1,18)
118 register_symtab(&ftape_symbol_table); /* add global ftape symbols */
119 #endif
120 #if defined(CONFIG_PROC_FS) && defined(CONFIG_FT_PROC_FS)
121 (void)ftape_proc_init();
122 #endif
123 #ifdef CONFIG_ZFTAPE
124 (void)zft_init();
125 #endif
126 TRACE_EXIT 0;
127 }
128
129 #ifdef MODULE
130
131 #ifndef CONFIG_FT_NO_TRACE_AT_ALL
132 static int ft_tracing = -1;
133 #endif
134
135 #if LINUX_VERSION_CODE >= KERNEL_VER(2,1,18)
136 #define FT_MOD_PARM(var,type,desc) \
137 MODULE_PARM(var,type); MODULE_PARM_DESC(var,desc)
138
139 FT_MOD_PARM(ft_fdc_base, "i", "Base address of FDC controller.");
140 FT_MOD_PARM(ft_fdc_irq, "i", "IRQ (interrupt channel) to use.");
141 FT_MOD_PARM(ft_fdc_dma, "i", "DMA channel to use.");
142 FT_MOD_PARM(ft_fdc_threshold, "i", "Threshold of the FDC Fifo.");
143 FT_MOD_PARM(ft_fdc_rate_limit, "i", "Maximal data rate for FDC.");
144 FT_MOD_PARM(ft_probe_fc10, "i",
145 "If non-zero, probe for a Colorado FC-10/FC-20 controller.");
146 FT_MOD_PARM(ft_mach2, "i",
147 "If non-zero, probe for a Mountain MACH-2 controller.");
148 FT_MOD_PARM(ft_tracing, "i",
149 "Amount of debugging output, 0 <= tracing <= 8, default 3.");
150 MODULE_AUTHOR(
151 "(c) 1993-1996 Bas Laarhoven (bas@vimec.nl), "
152 "(c) 1995-1996 Kai Harrekilde-Petersen (khp@dolphinics.no), "
153 "(c) 1996, 1997 Claus-Justus Heine (claus@momo.math.rwth-aachen.de)");
154 MODULE_DESCRIPTION(
155 "QIC-117 driver for QIC-40/80/3010/3020 floppy tape drives.");
156 MODULE_LICENSE("GPL");
157 #endif
158
159 /* Called by modules package when installing the driver
160 */
161 int init_module(void)
162 {
163 #ifndef CONFIG_FT_NO_TRACE_AT_ALL
164 if (ft_tracing != -1) {
165 ftape_tracing = ft_tracing;
166 }
167 #endif
168 return ftape_init();
169 }
170
171 /* Called by modules package when removing the driver
172 */
173 void cleanup_module(void)
174 {
175 TRACE_FUN(ft_t_flow);
176
177 #if defined(CONFIG_PROC_FS) && defined(CONFIG_FT_PROC_FS)
178 ftape_proc_destroy();
179 #endif
180 (void)ftape_set_nr_buffers(0);
181 printk(KERN_INFO "ftape: unloaded.\n");
182 TRACE_EXIT;
183 }
184 #endif /* MODULE */
185