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 #if defined(CONFIG_DVB_MAX_ADAPTERS) && CONFIG_DVB_MAX_ADAPTERS > 0 34 #define DVB_MAX_ADAPTERS CONFIG_DVB_MAX_ADAPTERS 35 #else 36 #define DVB_MAX_ADAPTERS 8 37 #endif 38 39 #define DVB_UNSET (-1) 40 41 #define DVB_DEVICE_VIDEO 0 42 #define DVB_DEVICE_AUDIO 1 43 #define DVB_DEVICE_SEC 2 44 #define DVB_DEVICE_FRONTEND 3 45 #define DVB_DEVICE_DEMUX 4 46 #define DVB_DEVICE_DVR 5 47 #define DVB_DEVICE_CA 6 48 #define DVB_DEVICE_NET 7 49 #define DVB_DEVICE_OSD 8 50 51 #define DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr) \ 52 static short adapter_nr[] = \ 53 {[0 ... (DVB_MAX_ADAPTERS - 1)] = DVB_UNSET }; \ 54 module_param_array(adapter_nr, short, NULL, 0444); \ 55 MODULE_PARM_DESC(adapter_nr, "DVB adapter numbers") 56 57 struct dvb_frontend; 58 59 struct dvb_adapter { 60 int num; 61 struct list_head list_head; 62 struct list_head device_list; 63 const char *name; 64 u8 proposed_mac [6]; 65 void* priv; 66 67 struct device *device; 68 69 struct module *module; 70 71 int mfe_shared; /* indicates mutually exclusive frontends */ 72 struct dvb_device *mfe_dvbdev; /* frontend device in use */ 73 struct mutex mfe_lock; /* access lock for thread creation */ 74 }; 75 76 77 struct dvb_device { 78 struct list_head list_head; 79 const struct file_operations *fops; 80 struct dvb_adapter *adapter; 81 int type; 82 int minor; 83 u32 id; 84 85 /* in theory, 'users' can vanish now, 86 but I don't want to change too much now... */ 87 int readers; 88 int writers; 89 int users; 90 91 wait_queue_head_t wait_queue; 92 /* don't really need those !? -- FIXME: use video_usercopy */ 93 int (*kernel_ioctl)(struct file *file, unsigned int cmd, void *arg); 94 95 void *priv; 96 }; 97 98 99 extern int dvb_register_adapter(struct dvb_adapter *adap, const char *name, 100 struct module *module, struct device *device, 101 short *adapter_nums); 102 extern int dvb_unregister_adapter (struct dvb_adapter *adap); 103 104 extern int dvb_register_device (struct dvb_adapter *adap, 105 struct dvb_device **pdvbdev, 106 const struct dvb_device *template, 107 void *priv, 108 int type); 109 110 extern void dvb_unregister_device (struct dvb_device *dvbdev); 111 112 extern int dvb_generic_open (struct inode *inode, struct file *file); 113 extern int dvb_generic_release (struct inode *inode, struct file *file); 114 extern long dvb_generic_ioctl (struct file *file, 115 unsigned int cmd, unsigned long arg); 116 117 /* we don't mess with video_usercopy() any more, 118 we simply define out own dvb_usercopy(), which will hopefully become 119 generic_usercopy() someday... */ 120 121 extern int dvb_usercopy(struct file *file, unsigned int cmd, unsigned long arg, 122 int (*func)(struct file *file, unsigned int cmd, void *arg)); 123 124 /** generic DVB attach function. */ 125 #ifdef CONFIG_MEDIA_ATTACH 126 #define dvb_attach(FUNCTION, ARGS...) ({ \ 127 void *__r = NULL; \ 128 typeof(&FUNCTION) __a = symbol_request(FUNCTION); \ 129 if (__a) { \ 130 __r = (void *) __a(ARGS); \ 131 if (__r == NULL) \ 132 symbol_put(FUNCTION); \ 133 } else { \ 134 printk(KERN_ERR "DVB: Unable to find symbol "#FUNCTION"()\n"); \ 135 } \ 136 __r; \ 137 }) 138 139 #define dvb_detach(FUNC) symbol_put_addr(FUNC) 140 141 #else 142 #define dvb_attach(FUNCTION, ARGS...) ({ \ 143 FUNCTION(ARGS); \ 144 }) 145 146 #define dvb_detach(FUNC) {} 147 148 #endif 149 150 #endif /* #ifndef _DVBDEV_H_ */ 151