1 /*
2 * dvbdev.h
3 *
4 * Copyright (C) 2000 Ralph Metzler & Marcus Metzler
5 * for convergence integrated media GmbH
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Lesser Public License
9 * as published by the Free Software Foundation; either version 2.1
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 *
21 */
22
23 #ifndef _DVBDEV_H_
24 #define _DVBDEV_H_
25
26 #include <linux/types.h>
27 #include <linux/poll.h>
28 #include <linux/fs.h>
29 #include <linux/list.h>
30
31 #define DVB_MAJOR 212
32
33 #define DVB_MAX_ADAPTERS 8
34
35 #define DVB_UNSET (-1)
36
37 #define DVB_DEVICE_VIDEO 0
38 #define DVB_DEVICE_AUDIO 1
39 #define DVB_DEVICE_SEC 2
40 #define DVB_DEVICE_FRONTEND 3
41 #define DVB_DEVICE_DEMUX 4
42 #define DVB_DEVICE_DVR 5
43 #define DVB_DEVICE_CA 6
44 #define DVB_DEVICE_NET 7
45 #define DVB_DEVICE_OSD 8
46
47 #define DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr) \
48 static short adapter_nr[] = \
49 {[0 ... (DVB_MAX_ADAPTERS - 1)] = DVB_UNSET }; \
50 module_param_array(adapter_nr, short, NULL, 0444); \
51 MODULE_PARM_DESC(adapter_nr, "DVB adapter numbers")
52
53 struct dvb_adapter {
54 int num;
55 struct list_head list_head;
56 struct list_head device_list;
57 const char *name;
58 u8 proposed_mac [6];
59 void* priv;
60
61 struct device *device;
62
63 struct module *module;
64
65 int mfe_shared; /* indicates mutually exclusive frontends */
66 struct dvb_device *mfe_dvbdev; /* frontend device in use */
67 struct mutex mfe_lock; /* access lock for thread creation */
68 };
69
70
71 struct dvb_device {
72 struct list_head list_head;
73 const struct file_operations *fops;
74 struct dvb_adapter *adapter;
75 int type;
76 int minor;
77 u32 id;
78
79 /* in theory, 'users' can vanish now,
80 but I don't want to change too much now... */
81 int readers;
82 int writers;
83 int users;
84
85 wait_queue_head_t wait_queue;
86 /* don't really need those !? -- FIXME: use video_usercopy */
87 int (*kernel_ioctl)(struct inode *inode, struct file *file,
88 unsigned int cmd, void *arg);
89
90 void *priv;
91 };
92
93
94 extern int dvb_register_adapter(struct dvb_adapter *adap, const char *name,
95 struct module *module, struct device *device,
96 short *adapter_nums);
97 extern int dvb_unregister_adapter (struct dvb_adapter *adap);
98
99 extern int dvb_register_device (struct dvb_adapter *adap,
100 struct dvb_device **pdvbdev,
101 const struct dvb_device *template,
102 void *priv,
103 int type);
104
105 extern void dvb_unregister_device (struct dvb_device *dvbdev);
106
107 extern int dvb_generic_open (struct inode *inode, struct file *file);
108 extern int dvb_generic_release (struct inode *inode, struct file *file);
109 extern int dvb_generic_ioctl (struct inode *inode, struct file *file,
110 unsigned int cmd, unsigned long arg);
111
112 /* we don't mess with video_usercopy() any more,
113 we simply define out own dvb_usercopy(), which will hopefully become
114 generic_usercopy() someday... */
115
116 extern int dvb_usercopy(struct inode *inode, struct file *file,
117 unsigned int cmd, unsigned long arg,
118 int (*func)(struct inode *inode, struct file *file,
119 unsigned int cmd, void *arg));
120
121 /** generic DVB attach function. */
122 #ifdef CONFIG_MEDIA_ATTACH
123 #define dvb_attach(FUNCTION, ARGS...) ({ \
124 void *__r = NULL; \
125 typeof(&FUNCTION) __a = symbol_request(FUNCTION); \
126 if (__a) { \
127 __r = (void *) __a(ARGS); \
128 if (__r == NULL) \
129 symbol_put(FUNCTION); \
130 } else { \
131 printk(KERN_ERR "DVB: Unable to find symbol "#FUNCTION"()\n"); \
132 } \
133 __r; \
134 })
135
136 #else
137 #define dvb_attach(FUNCTION, ARGS...) ({ \
138 FUNCTION(ARGS); \
139 })
140
141 #endif
142
143 #endif /* #ifndef _DVBDEV_H_ */
144
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