/***************************************************************************** * * Filename:      irda-usb.h * Version:       0.9b * Description:   IrDA-USB Driver * Status:        Experimental  * Author:        Dag Brattli <dag@brattli.net> * *	Copyright (C) 2001, Roman Weissgaerber <weissg@vienna.at> *      Copyright (C) 2000, Dag Brattli <dag@brattli.net> *      Copyright (C) 2001, Jean Tourrilhes <jt@hpl.hp.com> *           *	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., 675 Mass Ave, Cambridge, MA 02139, USA. * *****************************************************************************/#include <linux/time.h>#include <net/irda/irda.h>#include <net/irda/irlap.h>#include <net/irda/irda_device.h>#define RX_COPY_THRESHOLD 200#define IRDA_USB_MAX_MTU 2051#define IRDA_USB_SPEED_MTU 64		/* Weird, but work like this *//* Maximum number of active URB on the Rx path * This is the amount of buffers the we keep between the USB harware and the * IrDA stack. * * Note : the network layer does also queue the packets between us and the * IrDA stack, and is actually pretty fast and efficient in doing that. * Therefore, we don't need to have a large number of URBs, and we can * perfectly live happy with only one. We certainly don't need to keep the * full IrTTP window around here... * I repeat for those who have trouble to understand : 1 URB is plenty * good enough to handle back-to-back (brickwalled) frames. I tried it, * it works (it's the hardware that has trouble doing it). * * Having 2 URBs would allow the USB stack to process one URB while we take * care of the other and then swap the URBs... * On the other hand, increasing the number of URB will have penalities * in term of latency and will interact with the link management in IrLAP... * Jean II */#define IU_MAX_ACTIVE_RX_URBS	1	/* Don't touch !!! *//* When a Rx URB is passed back to us, we can't reuse it immediately, * because it may still be referenced by the USB layer. Therefore we * need to keep one extra URB in the Rx path. * Jean II */#define IU_MAX_RX_URBS	(IU_MAX_ACTIVE_RX_URBS + 1)/* Various ugly stuff to try to workaround generic problems *//* Send speed command in case of timeout, just for trying to get things sane */#define IU_BUG_KICK_TIMEOUT/* Show the USB class descriptor */#undef IU_DUMP_CLASS_DESC /* Assume a minimum round trip latency for USB transfer (in us)... * USB transfer are done in the next USB slot if there is no traffic * (1/19 msec) and is done at 12 Mb/s : * Waiting for slot + tx = (53us + 16us) * 2 = 137us minimum. * Rx notification will only be done at the end of the USB frame period : * OHCI : frame period = 1ms * UHCI : frame period = 1ms, but notification can take 2 or 3 ms :-( * EHCI : frame period = 125us */#define IU_USB_MIN_RTT		500	/* This should be safe in most cases *//* Inbound header */#define MEDIA_BUSY    0x80#define SPEED_2400    0x01#define SPEED_9600    0x02#define SPEED_19200   0x03#define SPEED_38400   0x04#define SPEED_57600   0x05#define SPEED_115200  0x06#define SPEED_576000  0x07#define SPEED_1152000 0x08#define SPEED_4000000 0x09/* Basic capabilities */#define IUC_DEFAULT	0x00	/* Basic device compliant with 1.0 spec *//* Main bugs */#define IUC_SPEED_BUG	0x01	/* Device doesn't set speed after the frame */#define IUC_NO_WINDOW	0x02	/* Device doesn't behave with big Rx window */#define IUC_NO_TURN	0x04	/* Device doesn't do turnaround by itself *//* Not currently used */#define IUC_SIR_ONLY	0x08	/* Device doesn't behave at FIR speeds */#define IUC_SMALL_PKT	0x10	/* Device doesn't behave with big Rx packets */#define IUC_MAX_WINDOW	0x20	/* Device underestimate the Rx window */#define IUC_MAX_XBOFS	0x40	/* Device need more xbofs than advertised *//* USB class definitions */#define USB_IRDA_HEADER   0x01#define USB_CLASS_IRDA    0x02 /* USB_CLASS_APP_SPEC subclass */ #define USB_DT_IRDA       0x21struct irda_class_desc {	__u8  bLength;	__u8  bDescriptorType;	__u16 bcdSpecRevision;	__u8  bmDataSize;	__u8  bmWindowSize;	__u8  bmMinTurnaroundTime;	__u16 wBaudRate;	__u8  bmAdditionalBOFs;	__u8  bIrdaRateSniff;	__u8  bMaxUnicastList;} __attribute__ ((packed));/* class specific interface request to get the IrDA-USB class descriptor * (6.2.5, USB-IrDA class spec 1.0) */#define IU_REQ_GET_CLASS_DESC	0x06struct irda_usb_cb {	struct irda_class_desc *irda_desc;	struct usb_device *usbdev;	/* init: probe_irda */	unsigned int ifnum;		/* Interface number of the USB dev. */	int netopen;			/* Device is active for network */	int present;			/* Device is present on the bus */	__u32 capability;		/* Capability of the hardware */	__u8  bulk_in_ep;		/* Rx Endpoint assignments */	__u8  bulk_out_ep;		/* Tx Endpoint assignments */	__u16 bulk_out_mtu;		/* Max Tx packet size in bytes */	__u8  bulk_int_ep;		/* Interrupt Endpoint assignments */	wait_queue_head_t wait_q;	/* for timeouts */	struct urb rx_urb[IU_MAX_RX_URBS];	/* URBs used to receive data frames */	struct urb *idle_rx_urb;	/* Pointer to idle URB in Rx path */	struct urb tx_urb;		/* URB used to send data frames */	struct urb speed_urb;		/* URB used to send speed commands */		struct net_device *netdev;	/* Yes! we are some kind of netdev. */	struct net_device_stats stats;	struct irlap_cb   *irlap;	/* The link layer we are binded to */	struct qos_info qos;	hashbin_t *tx_list;		/* Queued transmit skb's */	char *speed_buff;		/* Buffer for speed changes */	struct timeval stamp;	struct timeval now;	spinlock_t lock;		/* For serializing operations */	__u16 xbofs;			/* Current xbofs setting */	__s16 new_xbofs;		/* xbofs we need to set */	__u32 speed;			/* Current speed */	__s32 new_speed;		/* speed we need to set */	__u32 flags;			/* Interface flags */};