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1 | /* |
2 | * | |
3 | * Copyright 1999 Digi International (www.digi.com) | |
4 | * James Puzzo <jamesp at digi dot com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2, or (at your option) | |
9 | * any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the | |
13 | * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR | |
14 | * PURPOSE. See the GNU General Public License for more details. | |
15 | * | |
16 | */ | |
17 | ||
18 | #ifndef __DGRP_COMMON_H | |
19 | #define __DGRP_COMMON_H | |
20 | ||
21 | #define DIGI_VERSION "1.9-29" | |
22 | ||
23 | #include <linux/fs.h> | |
24 | #include <linux/timer.h> | |
25 | #include "drp.h" | |
26 | ||
27 | #define DGRP_TTIME 100 | |
28 | #define DGRP_RTIME 100 | |
29 | ||
30 | /************************************************************************ | |
31 | * All global storage allocation. | |
32 | ************************************************************************/ | |
33 | ||
0b52b749 BP |
34 | extern int dgrp_register_cudevices; /* enable legacy cu devices */ |
35 | extern int dgrp_register_prdevices; /* enable transparent print devices */ | |
36 | extern int dgrp_poll_tick; /* Poll interval - in ms */ | |
37 | ||
38 | extern struct list_head nd_struct_list; | |
39 | ||
40 | struct dgrp_poll_data { | |
41 | spinlock_t poll_lock; | |
42 | struct timer_list timer; | |
43 | int poll_tick; | |
44 | ulong poll_round; /* Timer rouding factor */ | |
45 | long node_active_count; | |
46 | }; | |
47 | ||
48 | extern struct dgrp_poll_data dgrp_poll_data; | |
49 | extern void dgrp_poll_handler(unsigned long arg); | |
50 | ||
51 | /* from dgrp_mon_ops.c */ | |
af064cdd | 52 | extern const struct file_operations dgrp_mon_ops; |
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53 | |
54 | /* from dgrp_tty.c */ | |
55 | extern int dgrp_tty_init(struct nd_struct *nd); | |
56 | extern void dgrp_tty_uninit(struct nd_struct *nd); | |
57 | ||
58 | /* from dgrp_ports_ops.c */ | |
af064cdd | 59 | extern const struct file_operations dgrp_ports_ops; |
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60 | |
61 | /* from dgrp_net_ops.c */ | |
af064cdd | 62 | extern const struct file_operations dgrp_net_ops; |
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63 | |
64 | /* from dgrp_dpa_ops.c */ | |
af064cdd | 65 | extern const struct file_operations dgrp_dpa_ops; |
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66 | extern void dgrp_dpa_data(struct nd_struct *, int, u8 *, int); |
67 | ||
68 | /* from dgrp_sysfs.c */ | |
7e1389a9 | 69 | extern int dgrp_create_class_sysfs_files(void); |
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70 | extern void dgrp_remove_class_sysfs_files(void); |
71 | ||
72 | extern void dgrp_create_node_class_sysfs_files(struct nd_struct *nd); | |
73 | extern void dgrp_remove_node_class_sysfs_files(struct nd_struct *nd); | |
74 | ||
75 | extern void dgrp_create_tty_sysfs(struct un_struct *un, struct device *c); | |
76 | extern void dgrp_remove_tty_sysfs(struct device *c); | |
77 | ||
78 | /* from dgrp_specproc.c */ | |
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79 | extern void dgrp_unregister_proc(void); |
80 | extern void dgrp_register_proc(void); | |
81 | ||
82 | /*-----------------------------------------------------------------------* | |
83 | * | |
84 | * Declarations for common operations: | |
85 | * | |
86 | * (either used by more than one of net, mon, or tty, | |
87 | * or in interrupt context (i.e. the poller)) | |
88 | * | |
89 | *-----------------------------------------------------------------------*/ | |
90 | ||
91 | void dgrp_carrier(struct ch_struct *ch); | |
0b52b749 BP |
92 | |
93 | ||
94 | /* | |
95 | * ID manipulation macros (where c1 & c2 are characters, i is | |
96 | * a long integer, and s is a character array of at least three members | |
97 | */ | |
98 | ||
99 | static inline void ID_TO_CHAR(long i, char *s) | |
100 | { | |
101 | s[0] = ((i & 0xff00)>>8); | |
102 | s[1] = (i & 0xff); | |
103 | s[2] = 0; | |
104 | } | |
105 | ||
106 | static inline long CHAR_TO_ID(char *s) | |
107 | { | |
108 | return ((s[0] & 0xff) << 8) | (s[1] & 0xff); | |
109 | } | |
110 | ||
111 | static inline struct nd_struct *nd_struct_get(long major) | |
112 | { | |
113 | struct nd_struct *nd; | |
114 | ||
115 | list_for_each_entry(nd, &nd_struct_list, list) { | |
116 | if (major == nd->nd_major) | |
117 | return nd; | |
118 | } | |
119 | ||
120 | return NULL; | |
121 | } | |
122 | ||
123 | static inline int nd_struct_add(struct nd_struct *entry) | |
124 | { | |
125 | struct nd_struct *ptr; | |
126 | ||
127 | ptr = nd_struct_get(entry->nd_major); | |
128 | ||
129 | if (ptr) | |
130 | return -EBUSY; | |
131 | ||
132 | list_add_tail(&entry->list, &nd_struct_list); | |
133 | ||
134 | return 0; | |
135 | } | |
136 | ||
137 | static inline int nd_struct_del(struct nd_struct *entry) | |
138 | { | |
139 | struct nd_struct *nd; | |
140 | ||
141 | nd = nd_struct_get(entry->nd_major); | |
142 | ||
143 | if (!nd) | |
144 | return -ENODEV; | |
145 | ||
146 | list_del(&nd->list); | |
147 | return 0; | |
148 | } | |
149 | ||
150 | #endif /* __DGRP_COMMON_H */ |