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![Johan Hovold](/assets/img/avatar_default.png)
An urb transfer buffer is allocated at every open but was never freed. This driver is a bit of a mess... Cc: stable <stable@kernel.org> Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
745 lines
20 KiB
C
745 lines
20 KiB
C
/*
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* KOBIL USB Smart Card Terminal Driver
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*
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* Copyright (C) 2002 KOBIL Systems GmbH
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* Author: Thomas Wahrenbruch
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*
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* Contact: linuxusb@kobil.de
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*
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* This program is largely derived from work by the linux-usb group
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* and associated source files. Please see the usb/serial files for
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* individual credits and copyrights.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
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* patience.
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*
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* Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
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* (Adapter K), B1 Professional and KAAN Professional (Adapter B)
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*
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* (21/05/2004) tw
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* Fix bug with P'n'P readers
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*
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* (28/05/2003) tw
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* Add support for KAAN SIM
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*
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* (12/09/2002) tw
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* Adapted to 2.5.
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*
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* (11/08/2002) tw
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* Initial version.
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/tty.h>
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#include <linux/tty_driver.h>
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#include <linux/tty_flip.h>
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#include <linux/module.h>
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#include <linux/spinlock.h>
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#include <linux/uaccess.h>
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#include <linux/usb.h>
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#include <linux/usb/serial.h>
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#include <linux/ioctl.h>
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#include "kobil_sct.h"
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static int debug;
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/* Version Information */
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#define DRIVER_VERSION "21/05/2004"
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#define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
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#define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
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#define KOBIL_VENDOR_ID 0x0D46
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#define KOBIL_ADAPTER_B_PRODUCT_ID 0x2011
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#define KOBIL_ADAPTER_K_PRODUCT_ID 0x2012
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#define KOBIL_USBTWIN_PRODUCT_ID 0x0078
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#define KOBIL_KAAN_SIM_PRODUCT_ID 0x0081
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#define KOBIL_TIMEOUT 500
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#define KOBIL_BUF_LENGTH 300
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/* Function prototypes */
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static int kobil_startup(struct usb_serial *serial);
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static void kobil_release(struct usb_serial *serial);
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static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port);
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static void kobil_close(struct usb_serial_port *port);
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static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
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const unsigned char *buf, int count);
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static int kobil_write_room(struct tty_struct *tty);
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static int kobil_ioctl(struct tty_struct *tty, struct file *file,
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unsigned int cmd, unsigned long arg);
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static int kobil_tiocmget(struct tty_struct *tty, struct file *file);
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static int kobil_tiocmset(struct tty_struct *tty, struct file *file,
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unsigned int set, unsigned int clear);
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static void kobil_read_int_callback(struct urb *urb);
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static void kobil_write_callback(struct urb *purb);
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static void kobil_set_termios(struct tty_struct *tty,
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struct usb_serial_port *port, struct ktermios *old);
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static void kobil_init_termios(struct tty_struct *tty);
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static const struct usb_device_id id_table[] = {
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{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
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{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
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{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
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{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, id_table);
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static struct usb_driver kobil_driver = {
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.name = "kobil",
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.probe = usb_serial_probe,
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.disconnect = usb_serial_disconnect,
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.id_table = id_table,
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.no_dynamic_id = 1,
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};
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static struct usb_serial_driver kobil_device = {
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.driver = {
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.owner = THIS_MODULE,
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.name = "kobil",
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},
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.description = "KOBIL USB smart card terminal",
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.usb_driver = &kobil_driver,
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.id_table = id_table,
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.num_ports = 1,
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.attach = kobil_startup,
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.release = kobil_release,
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.ioctl = kobil_ioctl,
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.set_termios = kobil_set_termios,
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.init_termios = kobil_init_termios,
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.tiocmget = kobil_tiocmget,
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.tiocmset = kobil_tiocmset,
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.open = kobil_open,
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.close = kobil_close,
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.write = kobil_write,
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.write_room = kobil_write_room,
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.read_int_callback = kobil_read_int_callback,
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};
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struct kobil_private {
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int write_int_endpoint_address;
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int read_int_endpoint_address;
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unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */
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int filled; /* index of the last char in buf */
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int cur_pos; /* index of the next char to send in buf */
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__u16 device_type;
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};
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static int kobil_startup(struct usb_serial *serial)
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{
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int i;
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struct kobil_private *priv;
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struct usb_device *pdev;
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struct usb_host_config *actconfig;
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struct usb_interface *interface;
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struct usb_host_interface *altsetting;
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struct usb_host_endpoint *endpoint;
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priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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priv->filled = 0;
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priv->cur_pos = 0;
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priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
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switch (priv->device_type) {
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case KOBIL_ADAPTER_B_PRODUCT_ID:
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printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
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break;
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case KOBIL_ADAPTER_K_PRODUCT_ID:
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printk(KERN_DEBUG
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"KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
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break;
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case KOBIL_USBTWIN_PRODUCT_ID:
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printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
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break;
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case KOBIL_KAAN_SIM_PRODUCT_ID:
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printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
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break;
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}
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usb_set_serial_port_data(serial->port[0], priv);
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/* search for the necessary endpoints */
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pdev = serial->dev;
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actconfig = pdev->actconfig;
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interface = actconfig->interface[0];
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altsetting = interface->cur_altsetting;
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endpoint = altsetting->endpoint;
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for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
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endpoint = &altsetting->endpoint[i];
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if (usb_endpoint_is_int_out(&endpoint->desc)) {
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dbg("%s Found interrupt out endpoint. Address: %d",
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__func__, endpoint->desc.bEndpointAddress);
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priv->write_int_endpoint_address =
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endpoint->desc.bEndpointAddress;
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}
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if (usb_endpoint_is_int_in(&endpoint->desc)) {
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dbg("%s Found interrupt in endpoint. Address: %d",
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__func__, endpoint->desc.bEndpointAddress);
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priv->read_int_endpoint_address =
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endpoint->desc.bEndpointAddress;
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}
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}
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return 0;
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}
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static void kobil_release(struct usb_serial *serial)
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{
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int i;
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dbg("%s - port %d", __func__, serial->port[0]->number);
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for (i = 0; i < serial->num_ports; ++i)
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kfree(usb_get_serial_port_data(serial->port[i]));
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}
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static void kobil_init_termios(struct tty_struct *tty)
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{
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/* Default to echo off and other sane device settings */
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tty->termios->c_lflag = 0;
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tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
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tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
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/* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
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tty->termios->c_oflag &= ~ONLCR;
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}
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static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
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{
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int result = 0;
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struct kobil_private *priv;
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unsigned char *transfer_buffer;
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int transfer_buffer_length = 8;
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int write_urb_transfer_buffer_length = 8;
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dbg("%s - port %d", __func__, port->number);
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priv = usb_get_serial_port_data(port);
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/* someone sets the dev to 0 if the close method has been called */
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port->interrupt_in_urb->dev = port->serial->dev;
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/* allocate memory for transfer buffer */
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transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
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if (!transfer_buffer)
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return -ENOMEM;
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/* allocate write_urb */
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if (!port->write_urb) {
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dbg("%s - port %d Allocating port->write_urb",
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__func__, port->number);
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port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
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if (!port->write_urb) {
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dbg("%s - port %d usb_alloc_urb failed",
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__func__, port->number);
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kfree(transfer_buffer);
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return -ENOMEM;
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}
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}
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/* allocate memory for write_urb transfer buffer */
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port->write_urb->transfer_buffer =
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kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
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if (!port->write_urb->transfer_buffer) {
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kfree(transfer_buffer);
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usb_free_urb(port->write_urb);
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port->write_urb = NULL;
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return -ENOMEM;
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}
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/* get hardware version */
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result = usb_control_msg(port->serial->dev,
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usb_rcvctrlpipe(port->serial->dev, 0),
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SUSBCRequest_GetMisc,
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USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
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SUSBCR_MSC_GetHWVersion,
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0,
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transfer_buffer,
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transfer_buffer_length,
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KOBIL_TIMEOUT
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);
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dbg("%s - port %d Send get_HW_version URB returns: %i",
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__func__, port->number, result);
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dbg("Harware version: %i.%i.%i",
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transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
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/* get firmware version */
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result = usb_control_msg(port->serial->dev,
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usb_rcvctrlpipe(port->serial->dev, 0),
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SUSBCRequest_GetMisc,
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USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
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SUSBCR_MSC_GetFWVersion,
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0,
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transfer_buffer,
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transfer_buffer_length,
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KOBIL_TIMEOUT
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);
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dbg("%s - port %d Send get_FW_version URB returns: %i",
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__func__, port->number, result);
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dbg("Firmware version: %i.%i.%i",
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transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
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if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
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priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
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/* Setting Baudrate, Parity and Stopbits */
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result = usb_control_msg(port->serial->dev,
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usb_rcvctrlpipe(port->serial->dev, 0),
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SUSBCRequest_SetBaudRateParityAndStopBits,
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USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
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SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
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SUSBCR_SPASB_1StopBit,
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0,
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transfer_buffer,
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0,
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KOBIL_TIMEOUT
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);
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dbg("%s - port %d Send set_baudrate URB returns: %i",
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__func__, port->number, result);
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/* reset all queues */
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result = usb_control_msg(port->serial->dev,
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usb_rcvctrlpipe(port->serial->dev, 0),
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SUSBCRequest_Misc,
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USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
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SUSBCR_MSC_ResetAllQueues,
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0,
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transfer_buffer,
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0,
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KOBIL_TIMEOUT
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);
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dbg("%s - port %d Send reset_all_queues URB returns: %i",
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__func__, port->number, result);
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}
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if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
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priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
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priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
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/* start reading (Adapter B 'cause PNP string) */
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result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
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dbg("%s - port %d Send read URB returns: %i",
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__func__, port->number, result);
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}
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kfree(transfer_buffer);
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return 0;
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}
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static void kobil_close(struct usb_serial_port *port)
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{
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dbg("%s - port %d", __func__, port->number);
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/* FIXME: Add rts/dtr methods */
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if (port->write_urb) {
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usb_poison_urb(port->write_urb);
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kfree(port->write_urb->transfer_buffer);
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usb_free_urb(port->write_urb);
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port->write_urb = NULL;
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}
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usb_kill_urb(port->interrupt_in_urb);
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}
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static void kobil_read_int_callback(struct urb *urb)
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{
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int result;
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struct usb_serial_port *port = urb->context;
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struct tty_struct *tty;
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unsigned char *data = urb->transfer_buffer;
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int status = urb->status;
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/* char *dbg_data; */
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dbg("%s - port %d", __func__, port->number);
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if (status) {
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dbg("%s - port %d Read int status not zero: %d",
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__func__, port->number, status);
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return;
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}
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tty = tty_port_tty_get(&port->port);
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if (urb->actual_length) {
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/* BEGIN DEBUG */
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/*
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dbg_data = kzalloc((3 * purb->actual_length + 10)
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* sizeof(char), GFP_KERNEL);
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if (! dbg_data) {
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return;
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}
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for (i = 0; i < purb->actual_length; i++) {
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sprintf(dbg_data +3*i, "%02X ", data[i]);
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}
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dbg(" <-- %s", dbg_data);
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kfree(dbg_data);
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*/
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/* END DEBUG */
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tty_insert_flip_string(tty, data, urb->actual_length);
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tty_flip_buffer_push(tty);
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}
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tty_kref_put(tty);
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/* someone sets the dev to 0 if the close method has been called */
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port->interrupt_in_urb->dev = port->serial->dev;
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result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
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dbg("%s - port %d Send read URB returns: %i",
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__func__, port->number, result);
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}
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static void kobil_write_callback(struct urb *purb)
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{
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}
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static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
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const unsigned char *buf, int count)
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{
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int length = 0;
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int result = 0;
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int todo = 0;
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struct kobil_private *priv;
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if (count == 0) {
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dbg("%s - port %d write request of 0 bytes",
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__func__, port->number);
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return 0;
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}
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priv = usb_get_serial_port_data(port);
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if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
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dbg("%s - port %d Error: write request bigger than buffer size", __func__, port->number);
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return -ENOMEM;
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}
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/* Copy data to buffer */
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memcpy(priv->buf + priv->filled, buf, count);
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usb_serial_debug_data(debug, &port->dev, __func__, count,
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priv->buf + priv->filled);
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priv->filled = priv->filled + count;
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/* only send complete block. TWIN, KAAN SIM and adapter K
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use the same protocol. */
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if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
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((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
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/* stop reading (except TWIN and KAAN SIM) */
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if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
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|| (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
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usb_kill_urb(port->interrupt_in_urb);
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todo = priv->filled - priv->cur_pos;
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while (todo > 0) {
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/* max 8 byte in one urb (endpoint size) */
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length = (todo < 8) ? todo : 8;
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/* copy data to transfer buffer */
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memcpy(port->write_urb->transfer_buffer,
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priv->buf + priv->cur_pos, length);
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usb_fill_int_urb(port->write_urb,
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port->serial->dev,
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usb_sndintpipe(port->serial->dev,
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priv->write_int_endpoint_address),
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port->write_urb->transfer_buffer,
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length,
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kobil_write_callback,
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port,
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8
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);
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priv->cur_pos = priv->cur_pos + length;
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result = usb_submit_urb(port->write_urb, GFP_NOIO);
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dbg("%s - port %d Send write URB returns: %i",
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__func__, port->number, result);
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todo = priv->filled - priv->cur_pos;
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if (todo > 0)
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msleep(24);
|
|
}
|
|
|
|
priv->filled = 0;
|
|
priv->cur_pos = 0;
|
|
|
|
/* someone sets the dev to 0 if the close method
|
|
has been called */
|
|
port->interrupt_in_urb->dev = port->serial->dev;
|
|
|
|
/* start reading (except TWIN and KAAN SIM) */
|
|
if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
|
|
priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
|
|
/* someone sets the dev to 0 if the close method has
|
|
been called */
|
|
port->interrupt_in_urb->dev = port->serial->dev;
|
|
|
|
result = usb_submit_urb(port->interrupt_in_urb,
|
|
GFP_NOIO);
|
|
dbg("%s - port %d Send read URB returns: %i",
|
|
__func__, port->number, result);
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
|
|
static int kobil_write_room(struct tty_struct *tty)
|
|
{
|
|
/* dbg("%s - port %d", __func__, port->number); */
|
|
/* FIXME */
|
|
return 8;
|
|
}
|
|
|
|
|
|
static int kobil_tiocmget(struct tty_struct *tty, struct file *file)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct kobil_private *priv;
|
|
int result;
|
|
unsigned char *transfer_buffer;
|
|
int transfer_buffer_length = 8;
|
|
|
|
priv = usb_get_serial_port_data(port);
|
|
if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
|
|
|| priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
|
|
/* This device doesn't support ioctl calls */
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* allocate memory for transfer buffer */
|
|
transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
|
|
if (!transfer_buffer)
|
|
return -ENOMEM;
|
|
|
|
result = usb_control_msg(port->serial->dev,
|
|
usb_rcvctrlpipe(port->serial->dev, 0),
|
|
SUSBCRequest_GetStatusLineState,
|
|
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
|
|
0,
|
|
0,
|
|
transfer_buffer,
|
|
transfer_buffer_length,
|
|
KOBIL_TIMEOUT);
|
|
|
|
dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
|
|
__func__, port->number, result, transfer_buffer[0]);
|
|
|
|
result = 0;
|
|
if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
|
|
result = TIOCM_DSR;
|
|
kfree(transfer_buffer);
|
|
return result;
|
|
}
|
|
|
|
static int kobil_tiocmset(struct tty_struct *tty, struct file *file,
|
|
unsigned int set, unsigned int clear)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct kobil_private *priv;
|
|
int result;
|
|
int dtr = 0;
|
|
int rts = 0;
|
|
unsigned char *transfer_buffer;
|
|
int transfer_buffer_length = 8;
|
|
|
|
/* FIXME: locking ? */
|
|
priv = usb_get_serial_port_data(port);
|
|
if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
|
|
|| priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
|
|
/* This device doesn't support ioctl calls */
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* allocate memory for transfer buffer */
|
|
transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
|
|
if (!transfer_buffer)
|
|
return -ENOMEM;
|
|
|
|
if (set & TIOCM_RTS)
|
|
rts = 1;
|
|
if (set & TIOCM_DTR)
|
|
dtr = 1;
|
|
if (clear & TIOCM_RTS)
|
|
rts = 0;
|
|
if (clear & TIOCM_DTR)
|
|
dtr = 0;
|
|
|
|
if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
|
|
if (dtr != 0)
|
|
dbg("%s - port %d Setting DTR",
|
|
__func__, port->number);
|
|
else
|
|
dbg("%s - port %d Clearing DTR",
|
|
__func__, port->number);
|
|
result = usb_control_msg(port->serial->dev,
|
|
usb_rcvctrlpipe(port->serial->dev, 0),
|
|
SUSBCRequest_SetStatusLinesOrQueues,
|
|
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
|
|
((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
|
|
0,
|
|
transfer_buffer,
|
|
0,
|
|
KOBIL_TIMEOUT);
|
|
} else {
|
|
if (rts != 0)
|
|
dbg("%s - port %d Setting RTS",
|
|
__func__, port->number);
|
|
else
|
|
dbg("%s - port %d Clearing RTS",
|
|
__func__, port->number);
|
|
result = usb_control_msg(port->serial->dev,
|
|
usb_rcvctrlpipe(port->serial->dev, 0),
|
|
SUSBCRequest_SetStatusLinesOrQueues,
|
|
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
|
|
((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
|
|
0,
|
|
transfer_buffer,
|
|
0,
|
|
KOBIL_TIMEOUT);
|
|
}
|
|
dbg("%s - port %d Send set_status_line URB returns: %i",
|
|
__func__, port->number, result);
|
|
kfree(transfer_buffer);
|
|
return (result < 0) ? result : 0;
|
|
}
|
|
|
|
static void kobil_set_termios(struct tty_struct *tty,
|
|
struct usb_serial_port *port, struct ktermios *old)
|
|
{
|
|
struct kobil_private *priv;
|
|
int result;
|
|
unsigned short urb_val = 0;
|
|
int c_cflag = tty->termios->c_cflag;
|
|
speed_t speed;
|
|
|
|
priv = usb_get_serial_port_data(port);
|
|
if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
|
|
priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
|
|
/* This device doesn't support ioctl calls */
|
|
*tty->termios = *old;
|
|
return;
|
|
}
|
|
|
|
speed = tty_get_baud_rate(tty);
|
|
switch (speed) {
|
|
case 1200:
|
|
urb_val = SUSBCR_SBR_1200;
|
|
break;
|
|
default:
|
|
speed = 9600;
|
|
case 9600:
|
|
urb_val = SUSBCR_SBR_9600;
|
|
break;
|
|
}
|
|
urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
|
|
SUSBCR_SPASB_1StopBit;
|
|
if (c_cflag & PARENB) {
|
|
if (c_cflag & PARODD)
|
|
urb_val |= SUSBCR_SPASB_OddParity;
|
|
else
|
|
urb_val |= SUSBCR_SPASB_EvenParity;
|
|
} else
|
|
urb_val |= SUSBCR_SPASB_NoParity;
|
|
tty->termios->c_cflag &= ~CMSPAR;
|
|
tty_encode_baud_rate(tty, speed, speed);
|
|
|
|
result = usb_control_msg(port->serial->dev,
|
|
usb_rcvctrlpipe(port->serial->dev, 0),
|
|
SUSBCRequest_SetBaudRateParityAndStopBits,
|
|
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
|
|
urb_val,
|
|
0,
|
|
NULL,
|
|
0,
|
|
KOBIL_TIMEOUT
|
|
);
|
|
}
|
|
|
|
static int kobil_ioctl(struct tty_struct *tty, struct file *file,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct kobil_private *priv = usb_get_serial_port_data(port);
|
|
unsigned char *transfer_buffer;
|
|
int transfer_buffer_length = 8;
|
|
int result;
|
|
|
|
if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
|
|
priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
|
|
/* This device doesn't support ioctl calls */
|
|
return -ENOIOCTLCMD;
|
|
|
|
switch (cmd) {
|
|
case TCFLSH:
|
|
transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
|
|
if (!transfer_buffer)
|
|
return -ENOBUFS;
|
|
|
|
result = usb_control_msg(port->serial->dev,
|
|
usb_rcvctrlpipe(port->serial->dev, 0),
|
|
SUSBCRequest_Misc,
|
|
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
|
|
SUSBCR_MSC_ResetAllQueues,
|
|
0,
|
|
NULL, /* transfer_buffer, */
|
|
0,
|
|
KOBIL_TIMEOUT
|
|
);
|
|
|
|
dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __func__, port->number, result);
|
|
kfree(transfer_buffer);
|
|
return (result < 0) ? -EIO: 0;
|
|
default:
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
}
|
|
|
|
static int __init kobil_init(void)
|
|
{
|
|
int retval;
|
|
retval = usb_serial_register(&kobil_device);
|
|
if (retval)
|
|
goto failed_usb_serial_register;
|
|
retval = usb_register(&kobil_driver);
|
|
if (retval)
|
|
goto failed_usb_register;
|
|
|
|
printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
|
|
DRIVER_DESC "\n");
|
|
|
|
return 0;
|
|
failed_usb_register:
|
|
usb_serial_deregister(&kobil_device);
|
|
failed_usb_serial_register:
|
|
return retval;
|
|
}
|
|
|
|
|
|
static void __exit kobil_exit(void)
|
|
{
|
|
usb_deregister(&kobil_driver);
|
|
usb_serial_deregister(&kobil_device);
|
|
}
|
|
|
|
module_init(kobil_init);
|
|
module_exit(kobil_exit);
|
|
|
|
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");
|