![Johan Hovold](/assets/img/avatar_default.png)
Simplify the endpoint sanity check by letting core verify that the required endpoints are present. Signed-off-by: Johan Hovold <johan@kernel.org>
561 lines
16 KiB
C
561 lines
16 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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#include <linux/kernel.h>
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#include <linux/errno.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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#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_port_probe(struct usb_serial_port *probe);
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static int kobil_port_remove(struct usb_serial_port *probe);
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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,
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unsigned int cmd, unsigned long arg);
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static int kobil_tiocmget(struct tty_struct *tty);
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static int kobil_tiocmset(struct tty_struct *tty,
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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_int_callback(struct urb *urb);
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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_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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.id_table = id_table,
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.num_ports = 1,
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.num_interrupt_out = 1,
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.port_probe = kobil_port_probe,
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.port_remove = kobil_port_remove,
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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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.write_int_callback = kobil_write_int_callback,
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};
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static struct usb_serial_driver * const serial_drivers[] = {
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&kobil_device, NULL
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};
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struct kobil_private {
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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_port_probe(struct usb_serial_port *port)
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{
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struct usb_serial *serial = port->serial;
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struct kobil_private *priv;
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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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dev_dbg(&serial->dev->dev, "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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dev_dbg(&serial->dev->dev, "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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dev_dbg(&serial->dev->dev, "KOBIL USBTWIN detected\n");
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break;
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case KOBIL_KAAN_SIM_PRODUCT_ID:
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dev_dbg(&serial->dev->dev, "KOBIL KAAN SIM detected\n");
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break;
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}
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usb_set_serial_port_data(port, priv);
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return 0;
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}
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static int kobil_port_remove(struct usb_serial_port *port)
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{
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struct kobil_private *priv;
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priv = usb_get_serial_port_data(port);
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kfree(priv);
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return 0;
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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_iflag &= ~(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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struct device *dev = &port->dev;
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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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priv = usb_get_serial_port_data(port);
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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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/* 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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dev_dbg(dev, "%s - Send get_HW_version URB returns: %i\n", __func__, result);
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dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0],
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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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dev_dbg(dev, "%s - Send get_FW_version URB returns: %i\n", __func__, result);
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dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0],
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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_sndctrlpipe(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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NULL,
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0,
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KOBIL_TIMEOUT
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);
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dev_dbg(dev, "%s - Send set_baudrate URB returns: %i\n", __func__, result);
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/* reset all queues */
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result = usb_control_msg(port->serial->dev,
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usb_sndctrlpipe(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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NULL,
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0,
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KOBIL_TIMEOUT
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);
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dev_dbg(dev, "%s - Send reset_all_queues URB returns: %i\n", __func__, 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_KERNEL);
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dev_dbg(dev, "%s - Send read URB returns: %i\n", __func__, 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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/* FIXME: Add rts/dtr methods */
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usb_kill_urb(port->interrupt_out_urb);
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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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unsigned char *data = urb->transfer_buffer;
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int status = urb->status;
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if (status) {
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dev_dbg(&port->dev, "%s - Read int status not zero: %d\n", __func__, status);
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return;
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}
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if (urb->actual_length) {
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usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
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data);
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tty_insert_flip_string(&port->port, data, urb->actual_length);
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tty_flip_buffer_push(&port->port);
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}
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result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
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dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
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}
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static void kobil_write_int_callback(struct urb *urb)
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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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dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
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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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dev_dbg(&port->dev, "%s - Error: write request bigger than buffer size\n", __func__);
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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(&port->dev, __func__, count, 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 = min(todo, port->interrupt_out_size);
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/* copy data to transfer buffer */
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memcpy(port->interrupt_out_buffer,
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priv->buf + priv->cur_pos, length);
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port->interrupt_out_urb->transfer_buffer_length = length;
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priv->cur_pos = priv->cur_pos + length;
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result = usb_submit_urb(port->interrupt_out_urb,
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GFP_ATOMIC);
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dev_dbg(&port->dev, "%s - Send write URB returns: %i\n", __func__, result);
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todo = priv->filled - priv->cur_pos;
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if (todo > 0)
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msleep(24);
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}
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priv->filled = 0;
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priv->cur_pos = 0;
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/* start 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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result = usb_submit_urb(port->interrupt_in_urb,
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GFP_ATOMIC);
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dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
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}
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}
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return count;
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}
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static int kobil_write_room(struct tty_struct *tty)
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{
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/* FIXME */
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return 8;
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}
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static int kobil_tiocmget(struct tty_struct *tty)
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{
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struct usb_serial_port *port = tty->driver_data;
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struct kobil_private *priv;
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int result;
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unsigned char *transfer_buffer;
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int transfer_buffer_length = 8;
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priv = usb_get_serial_port_data(port);
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if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
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|| priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
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/* This device doesn't support ioctl calls */
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return -EINVAL;
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}
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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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result = usb_control_msg(port->serial->dev,
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usb_rcvctrlpipe(port->serial->dev, 0),
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SUSBCRequest_GetStatusLineState,
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USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
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0,
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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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dev_dbg(&port->dev, "%s - Send get_status_line_state URB returns: %i. Statusline: %02x\n",
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__func__, result, transfer_buffer[0]);
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result = 0;
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if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
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result = TIOCM_DSR;
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kfree(transfer_buffer);
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return result;
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}
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static int kobil_tiocmset(struct tty_struct *tty,
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unsigned int set, unsigned int clear)
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{
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struct usb_serial_port *port = tty->driver_data;
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struct device *dev = &port->dev;
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struct kobil_private *priv;
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int result;
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int dtr = 0;
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int rts = 0;
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/* FIXME: locking ? */
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priv = usb_get_serial_port_data(port);
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if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
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|| priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
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/* This device doesn't support ioctl calls */
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return -EINVAL;
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}
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if (set & TIOCM_RTS)
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rts = 1;
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if (set & TIOCM_DTR)
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dtr = 1;
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if (clear & TIOCM_RTS)
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rts = 0;
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if (clear & TIOCM_DTR)
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dtr = 0;
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if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
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if (dtr != 0)
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dev_dbg(dev, "%s - Setting DTR\n", __func__);
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else
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dev_dbg(dev, "%s - Clearing DTR\n", __func__);
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result = usb_control_msg(port->serial->dev,
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usb_sndctrlpipe(port->serial->dev, 0),
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SUSBCRequest_SetStatusLinesOrQueues,
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USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
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((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
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0,
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NULL,
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0,
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KOBIL_TIMEOUT);
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} else {
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if (rts != 0)
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dev_dbg(dev, "%s - Setting RTS\n", __func__);
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else
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dev_dbg(dev, "%s - Clearing RTS\n", __func__);
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result = usb_control_msg(port->serial->dev,
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usb_sndctrlpipe(port->serial->dev, 0),
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SUSBCRequest_SetStatusLinesOrQueues,
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USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
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((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
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0,
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NULL,
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0,
|
|
KOBIL_TIMEOUT);
|
|
}
|
|
dev_dbg(dev, "%s - Send set_status_line URB returns: %i\n", __func__, result);
|
|
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_copy_hw(&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_sndctrlpipe(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,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct kobil_private *priv = usb_get_serial_port_data(port);
|
|
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:
|
|
result = usb_control_msg(port->serial->dev,
|
|
usb_sndctrlpipe(port->serial->dev, 0),
|
|
SUSBCRequest_Misc,
|
|
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
|
|
SUSBCR_MSC_ResetAllQueues,
|
|
0,
|
|
NULL,
|
|
0,
|
|
KOBIL_TIMEOUT
|
|
);
|
|
|
|
dev_dbg(&port->dev,
|
|
"%s - Send reset_all_queues (FLUSH) URB returns: %i\n",
|
|
__func__, result);
|
|
return (result < 0) ? -EIO: 0;
|
|
default:
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
}
|
|
|
|
module_usb_serial_driver(serial_drivers, id_table);
|
|
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL");
|