// SPDX-License-Identifier: GPL-2.0+
/*
* IPWireless 3 G UMTS TDD Modem driver ( USB connected )
*
* Copyright ( C ) 2004 Roelf Diedericks < roelfd @ inet . co . za >
* Copyright ( C ) 2004 Greg Kroah - Hartman < greg @ kroah . com >
*
* All information about the device was acquired using SnoopyPro
* on MSFT ' s O / S , and examing the MSFT drivers ' debug output
* ( insanely left _ on_ in the enduser version )
*
* It was written out of frustration with the IPWireless USB modem
* supplied by Axity3G / Sentech South Africa not supporting
* Linux whatsoever .
*
* Nobody provided any proprietary information that was not already
* available for this device .
*
* The modem adheres to the " 3 GPP TS 27 . 007 AT command set for 3 G
* User Equipment ( UE ) " standard , available from
* http : //www.3gpp.org/ftp/Specs/html-info/27007.htm
*
* The code was only tested the IPWireless handheld modem distributed
* in South Africa by Sentech .
*
* It may work for Woosh Inc in . nz too , as it appears they use the
* same kit .
*
* There is still some work to be done in terms of handling
* DCD , DTR , RTS , CTS which are currently faked .
* It ' s good enough for PPP at this point . It ' s based off all kinds of
* code found in usb / serial and usb / class
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include <linux/uaccess.h>
#include "usb-wwan.h"
#define DRIVER_AUTHOR "Roelf Diedericks"
#define DRIVER_DESC "IPWireless tty driver"
#define IPW_TTY_MAJOR 240 /* real device node major id, experimental range */
#define IPW_TTY_MINORS 256 /* we support 256 devices, dunno why, it'd be insane :) */
#define USB_IPW_MAGIC 0 x6d02 /* magic number for ipw struct */
/* Message sizes */
#define EVENT_BUFFER_SIZE 0 xFF
#define CHAR2INT16(c1, c0) (((u32)((c1) & 0 xff) << 8 ) + (u32)((c0) & 0 xff))
/* vendor/product pairs that are known work with this driver*/
#define IPW_VID 0 x0bc3
#define IPW_PID 0 x0001
/* Vendor commands: */
/* baud rates */
enum {
ipw_sio_b256000 = 0 x000e,
ipw_sio_b128000 = 0 x001d,
ipw_sio_b115200 = 0 x0020,
ipw_sio_b57600 = 0 x0040,
ipw_sio_b56000 = 0 x0042,
ipw_sio_b38400 = 0 x0060,
ipw_sio_b19200 = 0 x00c0,
ipw_sio_b14400 = 0 x0100,
ipw_sio_b9600 = 0 x0180,
ipw_sio_b4800 = 0 x0300,
ipw_sio_b2400 = 0 x0600,
ipw_sio_b1200 = 0 x0c00,
ipw_sio_b600 = 0 x1800
};
/* data bits */
#define ipw_dtb_7 0 x700
#define ipw_dtb_8 0 x810 /* ok so the define is misleading, I know, but forces 8,n,1 */
/* I mean, is there a point to any other setting these days? :) */
/* usb control request types : */
#define IPW_SIO_RXCTL 0 x00 /* control bulk rx channel transmissions, value=1/0 (on/off) */
#define IPW_SIO_SET_BAUD 0 x01 /* set baud, value=requested ipw_sio_bxxxx */
#define IPW_SIO_SET_LINE 0 x03 /* set databits, parity. value=ipw_dtb_x */
#define IPW_SIO_SET_PIN 0 x03 /* set/clear dtr/rts value=ipw_pin_xxx */
#define IPW_SIO_POLL 0 x08 /* get serial port status byte, call with value=0 */
#define IPW_SIO_INIT 0 x11 /* initializes ? value=0 (appears as first thing todo on open) */
#define IPW_SIO_PURGE 0 x12 /* purge all transmissions?, call with value=numchar_to_purge */
#define IPW_SIO_HANDFLOW 0 x13 /* set xon/xoff limits value=0, and a buffer of 0x10 bytes */
#define IPW_SIO_SETCHARS 0 x13 /* set the flowcontrol special chars, value=0, buf=6 bytes, */
/* last 2 bytes contain flowcontrol chars e.g. 00 00 00 00 11 13 */
/* values used for request IPW_SIO_SET_PIN */
#define IPW_PIN_SETDTR 0 x101
#define IPW_PIN_SETRTS 0 x202
#define IPW_PIN_CLRDTR 0 x100
#define IPW_PIN_CLRRTS 0 x200 /* unconfirmed */
/* values used for request IPW_SIO_RXCTL */
#define IPW_RXBULK_ON 1
#define IPW_RXBULK_OFF 0
/* various 16 byte hardcoded transferbuffers used by flow control */
#define IPW_BYTES_FLOWINIT { 0 x01, 0 , 0 , 0 , 0 x40, 0 , 0 , 0 , \
0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 }
/* Interpretation of modem status lines */
/* These need sorting out by individually connecting pins and checking
* results . FIXME !
* When data is being sent we see 0 x30 in the lower byte ; this must
* contain DSR and CTS . . .
*/
#define IPW_DSR ((1 <<4 ) | (1 <<5 ))
#define IPW_CTS ((1 <<5 ) | (1 <<4 ))
#define IPW_WANTS_TO_SEND 0 x30
static const struct usb_device_id id_table[] = {
{ USB_DEVICE(IPW_VID, IPW_PID) },
{ },
};
MODULE_DEVICE_TABLE(usb, id_table);
static int ipw_open(struct tty_struct *tty, struct usb_serial_port *port)
{
struct usb_device *udev = port->serial->dev;
struct device *dev = &port->dev;
u8 buf_flow_static[16 ] = IPW_BYTES_FLOWINIT;
u8 *buf_flow_init;
int result;
buf_flow_init = kmemdup(buf_flow_static, 16 , GFP_KERNEL);
if (!buf_flow_init)
return -ENOMEM;
/* --1: Tell the modem to initialize (we think) From sniffs this is
* always the first thing that gets sent to the modem during
* opening of the device */
dev_dbg(dev, "%s: Sending SIO_INIT (we guess)\n" , __func__);
result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0 ),
IPW_SIO_INIT,
USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
0 ,
0 , /* index */
NULL,
0 ,
100000 );
if (result < 0 )
dev_err(dev, "Init of modem failed (error = %d)\n" , result);
/* reset the bulk pipes */
usb_clear_halt(udev, usb_rcvbulkpipe(udev, port->bulk_in_endpointAddress));
usb_clear_halt(udev, usb_sndbulkpipe(udev, port->bulk_out_endpointAddress));
/*--2: Start reading from the device */
dev_dbg(dev, "%s: setting up bulk read callback\n" , __func__);
usb_wwan_open(tty, port);
/*--3: Tell the modem to open the floodgates on the rx bulk channel */
dev_dbg(dev, "%s:asking modem for RxRead (RXBULK_ON)\n" , __func__);
result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0 ),
IPW_SIO_RXCTL,
USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
IPW_RXBULK_ON,
0 , /* index */
NULL,
0 ,
100000 );
if (result < 0 )
dev_err(dev, "Enabling bulk RxRead failed (error = %d)\n" , result);
/*--4: setup the initial flowcontrol */
dev_dbg(dev, "%s:setting init flowcontrol (%s)\n" , __func__, buf_flow_init);
result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0 ),
IPW_SIO_HANDFLOW,
USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
0 ,
0 ,
buf_flow_init,
0 x10,
200000 );
if (result < 0 )
dev_err(dev, "initial flowcontrol failed (error = %d)\n" , result);
kfree(buf_flow_init);
return 0 ;
}
static int ipw_attach(struct usb_serial *serial)
{
struct usb_wwan_intf_private *data;
data = kzalloc(sizeof (struct usb_wwan_intf_private), GFP_KERNEL);
if (!data)
return -ENOMEM;
spin_lock_init(&data->susp_lock);
usb_set_serial_data(serial, data);
return 0 ;
}
static void ipw_release(struct usb_serial *serial)
{
struct usb_wwan_intf_private *data = usb_get_serial_data(serial);
usb_set_serial_data(serial, NULL);
kfree(data);
}
static void ipw_dtr_rts(struct usb_serial_port *port, int on)
{
struct usb_device *udev = port->serial->dev;
struct device *dev = &port->dev;
int result;
dev_dbg(dev, "%s: on = %d\n" , __func__, on);
result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0 ),
IPW_SIO_SET_PIN,
USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
on ? IPW_PIN_SETDTR : IPW_PIN_CLRDTR,
0 ,
NULL,
0 ,
200000 );
if (result < 0 )
dev_err(dev, "setting dtr failed (error = %d)\n" , result);
result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0 ),
IPW_SIO_SET_PIN, USB_TYPE_VENDOR |
USB_RECIP_INTERFACE | USB_DIR_OUT,
on ? IPW_PIN_SETRTS : IPW_PIN_CLRRTS,
0 ,
NULL,
0 ,
200000 );
if (result < 0 )
dev_err(dev, "setting rts failed (error = %d)\n" , result);
}
static void ipw_close(struct usb_serial_port *port)
{
struct usb_device *udev = port->serial->dev;
struct device *dev = &port->dev;
int result;
/*--3: purge */
dev_dbg(dev, "%s:sending purge\n" , __func__);
result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0 ),
IPW_SIO_PURGE, USB_TYPE_VENDOR |
USB_RECIP_INTERFACE | USB_DIR_OUT,
0 x03,
0 ,
NULL,
0 ,
200000 );
if (result < 0 )
dev_err(dev, "purge failed (error = %d)\n" , result);
/* send RXBULK_off (tell modem to stop transmitting bulk data on
rx chan) */
result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0 ),
IPW_SIO_RXCTL,
USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
IPW_RXBULK_OFF,
0 , /* index */
NULL,
0 ,
100000 );
if (result < 0 )
dev_err(dev, "Disabling bulk RxRead failed (error = %d)\n" , result);
usb_wwan_close(port);
}
static struct usb_serial_driver ipw_device = {
.driver = {
.name = "ipw" ,
},
.description = "IPWireless converter" ,
.id_table = id_table,
.num_ports = 1 ,
.open = ipw_open,
.close = ipw_close,
.attach = ipw_attach,
.release = ipw_release,
.port_probe = usb_wwan_port_probe,
.port_remove = usb_wwan_port_remove,
.dtr_rts = ipw_dtr_rts,
.write = usb_wwan_write,
};
static struct usb_serial_driver * const serial_drivers[] = {
&ipw_device, NULL
};
module_usb_serial_driver(serial_drivers, id_table);
/* Module information */
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL" );
Messung V0.5 in Prozent C=93 H=100 G=96
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-09-28)
¤
*© Formatika GbR, Deutschland