mirror of
https://github.com/torvalds/linux.git
synced 2024-11-01 01:31:44 +00:00
f939484bb6
This converts the ipw.c driver to use the module_usb_serial_driver() call instead of having to have a module_init/module_exit function, saving a lot of duplicated code. CC: Rusty Russell <rusty@rustcorp.com.au> CC: Oliver Neukum <oneukum@suse.de> CC: Alan Stern <stern@rowland.harvard.edu> CC: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
345 lines
9.6 KiB
C
345 lines
9.6 KiB
C
/*
|
|
* IPWireless 3G UMTS TDD Modem driver (USB connected)
|
|
*
|
|
* Copyright (C) 2004 Roelf Diedericks <roelfd@inet.co.za>
|
|
* Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.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.
|
|
*
|
|
* 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 "3GPP TS 27.007 AT command set for 3G
|
|
* 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/init.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"
|
|
|
|
/*
|
|
* Version Information
|
|
*/
|
|
#define DRIVER_VERSION "v0.4"
|
|
#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 0x6d02 /* magic number for ipw struct */
|
|
|
|
|
|
/* Message sizes */
|
|
#define EVENT_BUFFER_SIZE 0xFF
|
|
#define CHAR2INT16(c1, c0) (((u32)((c1) & 0xff) << 8) + (u32)((c0) & 0xff))
|
|
|
|
/* vendor/product pairs that are known work with this driver*/
|
|
#define IPW_VID 0x0bc3
|
|
#define IPW_PID 0x0001
|
|
|
|
|
|
/* Vendor commands: */
|
|
|
|
/* baud rates */
|
|
enum {
|
|
ipw_sio_b256000 = 0x000e,
|
|
ipw_sio_b128000 = 0x001d,
|
|
ipw_sio_b115200 = 0x0020,
|
|
ipw_sio_b57600 = 0x0040,
|
|
ipw_sio_b56000 = 0x0042,
|
|
ipw_sio_b38400 = 0x0060,
|
|
ipw_sio_b19200 = 0x00c0,
|
|
ipw_sio_b14400 = 0x0100,
|
|
ipw_sio_b9600 = 0x0180,
|
|
ipw_sio_b4800 = 0x0300,
|
|
ipw_sio_b2400 = 0x0600,
|
|
ipw_sio_b1200 = 0x0c00,
|
|
ipw_sio_b600 = 0x1800
|
|
};
|
|
|
|
/* data bits */
|
|
#define ipw_dtb_7 0x700
|
|
#define ipw_dtb_8 0x810 /* 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 0x00 /* control bulk rx channel transmissions, value=1/0 (on/off) */
|
|
#define IPW_SIO_SET_BAUD 0x01 /* set baud, value=requested ipw_sio_bxxxx */
|
|
#define IPW_SIO_SET_LINE 0x03 /* set databits, parity. value=ipw_dtb_x */
|
|
#define IPW_SIO_SET_PIN 0x03 /* set/clear dtr/rts value=ipw_pin_xxx */
|
|
#define IPW_SIO_POLL 0x08 /* get serial port status byte, call with value=0 */
|
|
#define IPW_SIO_INIT 0x11 /* initializes ? value=0 (appears as first thing todo on open) */
|
|
#define IPW_SIO_PURGE 0x12 /* purge all transmissions?, call with value=numchar_to_purge */
|
|
#define IPW_SIO_HANDFLOW 0x13 /* set xon/xoff limits value=0, and a buffer of 0x10 bytes */
|
|
#define IPW_SIO_SETCHARS 0x13 /* 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 0x101
|
|
#define IPW_PIN_SETRTS 0x202
|
|
#define IPW_PIN_CLRDTR 0x100
|
|
#define IPW_PIN_CLRRTS 0x200 /* 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 { 0x01, 0, 0, 0, 0x40, 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 0x30 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 0x30
|
|
|
|
static const struct usb_device_id usb_ipw_ids[] = {
|
|
{ USB_DEVICE(IPW_VID, IPW_PID) },
|
|
{ },
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(usb, usb_ipw_ids);
|
|
|
|
static struct usb_driver usb_ipw_driver = {
|
|
.name = "ipwtty",
|
|
.probe = usb_serial_probe,
|
|
.disconnect = usb_serial_disconnect,
|
|
.id_table = usb_ipw_ids,
|
|
};
|
|
|
|
static bool debug;
|
|
|
|
static int ipw_open(struct tty_struct *tty, struct usb_serial_port *port)
|
|
{
|
|
struct usb_device *dev = port->serial->dev;
|
|
u8 buf_flow_static[16] = IPW_BYTES_FLOWINIT;
|
|
u8 *buf_flow_init;
|
|
int result;
|
|
|
|
dbg("%s", __func__);
|
|
|
|
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 */
|
|
dbg("%s: Sending SIO_INIT (we guess)", __func__);
|
|
result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
|
|
IPW_SIO_INIT,
|
|
USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
|
|
0,
|
|
0, /* index */
|
|
NULL,
|
|
0,
|
|
100000);
|
|
if (result < 0)
|
|
dev_err(&port->dev,
|
|
"Init of modem failed (error = %d)\n", result);
|
|
|
|
/* reset the bulk pipes */
|
|
usb_clear_halt(dev,
|
|
usb_rcvbulkpipe(dev, port->bulk_in_endpointAddress));
|
|
usb_clear_halt(dev,
|
|
usb_sndbulkpipe(dev, port->bulk_out_endpointAddress));
|
|
|
|
/*--2: Start reading from the device */
|
|
dbg("%s: setting up bulk read callback", __func__);
|
|
usb_wwan_open(tty, port);
|
|
|
|
/*--3: Tell the modem to open the floodgates on the rx bulk channel */
|
|
dbg("%s:asking modem for RxRead (RXBULK_ON)", __func__);
|
|
result = usb_control_msg(dev, usb_sndctrlpipe(dev, 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(&port->dev,
|
|
"Enabling bulk RxRead failed (error = %d)\n", result);
|
|
|
|
/*--4: setup the initial flowcontrol */
|
|
dbg("%s:setting init flowcontrol (%s)", __func__, buf_flow_init);
|
|
result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
|
|
IPW_SIO_HANDFLOW,
|
|
USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
|
|
0,
|
|
0,
|
|
buf_flow_init,
|
|
0x10,
|
|
200000);
|
|
if (result < 0)
|
|
dev_err(&port->dev,
|
|
"initial flowcontrol failed (error = %d)\n", result);
|
|
|
|
kfree(buf_flow_init);
|
|
return 0;
|
|
}
|
|
|
|
/* fake probe - only to allocate data structures */
|
|
static int ipw_probe(struct usb_serial *serial, const struct usb_device_id *id)
|
|
{
|
|
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_wwan_release(serial);
|
|
usb_set_serial_data(serial, NULL);
|
|
kfree(data);
|
|
}
|
|
|
|
static void ipw_dtr_rts(struct usb_serial_port *port, int on)
|
|
{
|
|
struct usb_device *dev = port->serial->dev;
|
|
int result;
|
|
|
|
dbg("%s: on = %d", __func__, on);
|
|
|
|
result = usb_control_msg(dev, usb_sndctrlpipe(dev, 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(&port->dev, "setting dtr failed (error = %d)\n",
|
|
result);
|
|
|
|
result = usb_control_msg(dev, usb_sndctrlpipe(dev, 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(&port->dev, "setting rts failed (error = %d)\n",
|
|
result);
|
|
}
|
|
|
|
static void ipw_close(struct usb_serial_port *port)
|
|
{
|
|
struct usb_device *dev = port->serial->dev;
|
|
int result;
|
|
|
|
/*--3: purge */
|
|
dbg("%s:sending purge", __func__);
|
|
result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
|
|
IPW_SIO_PURGE, USB_TYPE_VENDOR |
|
|
USB_RECIP_INTERFACE | USB_DIR_OUT,
|
|
0x03,
|
|
0,
|
|
NULL,
|
|
0,
|
|
200000);
|
|
if (result < 0)
|
|
dev_err(&port->dev, "purge failed (error = %d)\n", result);
|
|
|
|
|
|
/* send RXBULK_off (tell modem to stop transmitting bulk data on
|
|
rx chan) */
|
|
result = usb_control_msg(dev, usb_sndctrlpipe(dev, 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(&port->dev,
|
|
"Disabling bulk RxRead failed (error = %d)\n", result);
|
|
|
|
usb_wwan_close(port);
|
|
}
|
|
|
|
static struct usb_serial_driver ipw_device = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "ipw",
|
|
},
|
|
.description = "IPWireless converter",
|
|
.id_table = usb_ipw_ids,
|
|
.num_ports = 1,
|
|
.disconnect = usb_wwan_disconnect,
|
|
.open = ipw_open,
|
|
.close = ipw_close,
|
|
.probe = ipw_probe,
|
|
.attach = usb_wwan_startup,
|
|
.release = ipw_release,
|
|
.dtr_rts = ipw_dtr_rts,
|
|
.write = usb_wwan_write,
|
|
};
|
|
|
|
static struct usb_serial_driver * const serial_drivers[] = {
|
|
&ipw_device, NULL
|
|
};
|
|
|
|
module_usb_serial_driver(usb_ipw_driver, serial_drivers);
|
|
|
|
/* Module information */
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_param(debug, bool, S_IRUGO | S_IWUSR);
|
|
MODULE_PARM_DESC(debug, "Debug enabled or not");
|