/****************************************************************************** *  usbatm.h - Generic USB xDSL driver core * *  Copyright (C) 2001, Alcatel *  Copyright (C) 2003, Duncan Sands, SolNegro, Josep Comas *  Copyright (C) 2004, David Woodhouse * *  This program is free software; you can redistribute it and/or modify it *  under the terms of the GNU General Public License as published by the Free *  Software Foundation; either version 2 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 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	_USBATM_H_#define	_USBATM_H_#include <linux/config.h>/*#define DEBUG#define VERBOSE_DEBUG*/#if !defined (DEBUG) && defined (CONFIG_USB_DEBUG)#	define DEBUG#endif#include <asm/semaphore.h>#include <linux/atm.h>#include <linux/atmdev.h>#include <linux/completion.h>#include <linux/device.h>#include <linux/kref.h>#include <linux/list.h>#include <linux/stringify.h>#include <linux/usb.h>#ifdef DEBUG#define UDSL_ASSERT(x)	BUG_ON(!(x))#else#define UDSL_ASSERT(x)	do { if (!(x)) warn("failed assertion '%s' at line %d", __stringify(x), __LINE__); } while(0)#endif#define usb_err(instance, format, arg...)	\	dev_err(&(instance)->usb_intf->dev , format , ## arg)#define usb_info(instance, format, arg...)	\	dev_info(&(instance)->usb_intf->dev , format , ## arg)#define usb_warn(instance, format, arg...)	\	dev_warn(&(instance)->usb_intf->dev , format , ## arg)#define usb_dbg(instance, format, arg...)	\	dev_dbg(&(instance)->usb_intf->dev , format , ## arg)/* FIXME: move to dev_* once ATM is driver model aware */#define atm_printk(level, instance, format, arg...)	\	printk(level "ATM dev %d: " format ,		\	(instance)->atm_dev->number , ## arg)#define atm_err(instance, format, arg...)	\	atm_printk(KERN_ERR, instance , format , ## arg)#define atm_info(instance, format, arg...)	\	atm_printk(KERN_INFO, instance , format , ## arg)#define atm_warn(instance, format, arg...)	\	atm_printk(KERN_WARNING, instance , format , ## arg)#ifdef DEBUG#define atm_dbg(instance, format, arg...)	\	atm_printk(KERN_DEBUG, instance , format , ## arg)#else#define atm_dbg(instance, format, arg...)	\	do {} while (0)#endif/* mini driver */struct usbatm_data;/**  Assuming all methods exist and succeed, they are called in this order:**  	bind, heavy_init, atm_start, ..., atm_stop, unbind*/struct usbatm_driver {	struct module *owner;	const char *driver_name;	/*	*  init device ... can sleep, or cause probe() failure.  Drivers with a heavy_init	*  method can avoid having it called by setting need_heavy_init to zero.	*/        int (*bind) (struct usbatm_data *, struct usb_interface *,		     const struct usb_device_id *id, int *need_heavy_init);	/* additional device initialization that is too slow to be done in probe() */        int (*heavy_init) (struct usbatm_data *, struct usb_interface *);	/* cleanup device ... can sleep, but can't fail */        void (*unbind) (struct usbatm_data *, struct usb_interface *);	/* init ATM device ... can sleep, or cause ATM initialization failure */	int (*atm_start) (struct usbatm_data *, struct atm_dev *);	/* cleanup ATM device ... can sleep, but can't fail */	void (*atm_stop) (struct usbatm_data *, struct atm_dev *);        int in;		/* rx endpoint */        int out;	/* tx endpoint */	unsigned rx_padding;	unsigned tx_padding;};extern int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,		struct usbatm_driver *driver);extern void usbatm_usb_disconnect(struct usb_interface *intf);struct usbatm_channel {	int endpoint;			/* usb pipe */	unsigned int stride;		/* ATM cell size + padding */	unsigned int buf_size;		/* urb buffer size */	spinlock_t lock;	struct list_head list;	struct tasklet_struct tasklet;	struct timer_list delay;	struct usbatm_data *usbatm;};/* main driver data */struct usbatm_data {	/******************	*  public fields  *        ******************/	/* mini driver */	struct usbatm_driver *driver;	void *driver_data;	char driver_name[16];	/* USB device */	struct usb_device *usb_dev;	struct usb_interface *usb_intf;	char description[64];	/* ATM device */	struct atm_dev *atm_dev;	/********************************	*  private fields - do not use  *        ********************************/	struct kref refcount;	struct semaphore serialize;	/* heavy init */	int thread_pid;	struct completion thread_started;	struct completion thread_exited;	/* ATM device */	struct list_head vcc_list;	struct usbatm_channel rx_channel;	struct usbatm_channel tx_channel;	struct sk_buff_head sndqueue;	struct sk_buff *current_skb;			/* being emptied */	struct urb *urbs[0];};#endif	/* _USBATM_H_ */