/* * dvbdev.h * * Copyright (C) 2000 Ralph Metzler & Marcus Metzler * for convergence integrated media GmbH * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Lesser Public License * as published by the Free Software Foundation; either version 2.1 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * */ #ifndef _DVBDEV_H_ #define _DVBDEV_H_ #include <linux/types.h> #include <linux/poll.h> #include <linux/fs.h> #include <linux/list.h> #define DVB_MAJOR 212 #if defined(CONFIG_DVB_MAX_ADAPTERS) && CONFIG_DVB_MAX_ADAPTERS > 0 #define DVB_MAX_ADAPTERS CONFIG_DVB_MAX_ADAPTERS #else #define DVB_MAX_ADAPTERS 8 #endif #define DVB_UNSET (-1) #define DVB_DEVICE_VIDEO 0 #define DVB_DEVICE_AUDIO 1 #define DVB_DEVICE_SEC 2 #define DVB_DEVICE_FRONTEND 3 #define DVB_DEVICE_DEMUX 4 #define DVB_DEVICE_DVR 5 #define DVB_DEVICE_CA 6 #define DVB_DEVICE_NET 7 #define DVB_DEVICE_OSD 8 #define DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr) \ static short adapter_nr[] = \ {[0 ... (DVB_MAX_ADAPTERS - 1)] = DVB_UNSET }; \ module_param_array(adapter_nr, short, NULL, 0444); \ MODULE_PARM_DESC(adapter_nr, "DVB adapter numbers") struct dvb_frontend; struct dvb_adapter { int num; struct list_head list_head; struct list_head device_list; const char *name; u8 proposed_mac [6]; void* priv; struct device *device; struct module *module; int mfe_shared; /* indicates mutually exclusive frontends */ struct dvb_device *mfe_dvbdev; /* frontend device in use */ struct mutex mfe_lock; /* access lock for thread creation */ /* Allow the adapter/bridge driver to perform an action before and/or * after the core handles an ioctl: * * DVB_FE_IOCTL_PRE indicates that the ioctl has not yet been handled. * DVB_FE_IOCTL_POST indicates that the ioctl has been handled. * * When DVB_FE_IOCTL_PRE is passed to the callback as the stage arg: * * return 0 to allow dvb-core to handle the ioctl. * return a positive int to prevent dvb-core from handling the ioctl, * and exit without error. * return a negative int to prevent dvb-core from handling the ioctl, * and return that value as an error. * * When DVB_FE_IOCTL_POST is passed to the callback as the stage arg: * * return 0 to allow the dvb_frontend ioctl handler to exit normally. * return a negative int to cause the dvb_frontend ioctl handler to * return that value as an error. */ #define DVB_FE_IOCTL_PRE 0 #define DVB_FE_IOCTL_POST 1 int (*fe_ioctl_override)(struct dvb_frontend *fe, unsigned int cmd, void *parg, unsigned int stage); }; struct dvb_device { struct list_head list_head; const struct file_operations *fops; struct dvb_adapter *adapter; int type; int minor; u32 id; /* in theory, 'users' can vanish now, but I don't want to change too much now... */ int readers; int writers; int users; wait_queue_head_t wait_queue; /* don't really need those !? -- FIXME: use video_usercopy */ int (*kernel_ioctl)(struct file *file, unsigned int cmd, void *arg); void *priv; }; extern int dvb_register_adapter(struct dvb_adapter *adap, const char *name, struct module *module, struct device *device, short *adapter_nums); extern int dvb_unregister_adapter (struct dvb_adapter *adap); extern int dvb_register_device (struct dvb_adapter *adap, struct dvb_device **pdvbdev, const struct dvb_device *template, void *priv, int type); extern void dvb_unregister_device (struct dvb_device *dvbdev); extern int dvb_generic_open (struct inode *inode, struct file *file); extern int dvb_generic_release (struct inode *inode, struct file *file); extern long dvb_generic_ioctl (struct file *file, unsigned int cmd, unsigned long arg); /* we don't mess with video_usercopy() any more, we simply define out own dvb_usercopy(), which will hopefully become generic_usercopy() someday... */ extern int dvb_usercopy(struct file *file, unsigned int cmd, unsigned long arg, int (*func)(struct file *file, unsigned int cmd, void *arg)); /** generic DVB attach function. */ #ifdef CONFIG_MEDIA_ATTACH #define dvb_attach(FUNCTION, ARGS...) ({ \ void *__r = NULL; \ typeof(&FUNCTION) __a = symbol_request(FUNCTION); \ if (__a) { \ __r = (void *) __a(ARGS); \ if (__r == NULL) \ symbol_put(FUNCTION); \ } else { \ printk(KERN_ERR "DVB: Unable to find symbol "#FUNCTION"()\n"); \ } \ __r; \ }) #else #define dvb_attach(FUNCTION, ARGS...) ({ \ FUNCTION(ARGS); \ }) #endif #endif /* #ifndef _DVBDEV_H_ */