linux/drivers/usb/serial/kobil_sct.c
Greg Kroah-Hartman 6ca98bc284 USB: serial: Remove redundant license text
Now that the SPDX tag is in all USB files, that identifies the license
in a specific and legally-defined manner.  So the extra GPL text wording
can be removed as it is no longer needed at all.

This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text.  And there's unneeded stuff
like the address (sometimes incorrect) for the FSF which is never
needed.

No copyright headers or other non-license-description text was removed.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-04 11:55:38 +01:00

558 lines
16 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* KOBIL USB Smart Card Terminal Driver
*
* Copyright (C) 2002 KOBIL Systems GmbH
* Author: Thomas Wahrenbruch
*
* Contact: linuxusb@kobil.de
*
* This program is largely derived from work by the linux-usb group
* and associated source files. Please see the usb/serial files for
* individual credits and copyrights.
*
* Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
* patience.
*
* Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
* (Adapter K), B1 Professional and KAAN Professional (Adapter B)
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include <linux/ioctl.h>
#include "kobil_sct.h"
#define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
#define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
#define KOBIL_VENDOR_ID 0x0D46
#define KOBIL_ADAPTER_B_PRODUCT_ID 0x2011
#define KOBIL_ADAPTER_K_PRODUCT_ID 0x2012
#define KOBIL_USBTWIN_PRODUCT_ID 0x0078
#define KOBIL_KAAN_SIM_PRODUCT_ID 0x0081
#define KOBIL_TIMEOUT 500
#define KOBIL_BUF_LENGTH 300
/* Function prototypes */
static int kobil_port_probe(struct usb_serial_port *probe);
static int kobil_port_remove(struct usb_serial_port *probe);
static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port);
static void kobil_close(struct usb_serial_port *port);
static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
const unsigned char *buf, int count);
static int kobil_write_room(struct tty_struct *tty);
static int kobil_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg);
static int kobil_tiocmget(struct tty_struct *tty);
static int kobil_tiocmset(struct tty_struct *tty,
unsigned int set, unsigned int clear);
static void kobil_read_int_callback(struct urb *urb);
static void kobil_write_int_callback(struct urb *urb);
static void kobil_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old);
static void kobil_init_termios(struct tty_struct *tty);
static const struct usb_device_id id_table[] = {
{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
{ USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, id_table);
static struct usb_serial_driver kobil_device = {
.driver = {
.owner = THIS_MODULE,
.name = "kobil",
},
.description = "KOBIL USB smart card terminal",
.id_table = id_table,
.num_ports = 1,
.num_interrupt_out = 1,
.port_probe = kobil_port_probe,
.port_remove = kobil_port_remove,
.ioctl = kobil_ioctl,
.set_termios = kobil_set_termios,
.init_termios = kobil_init_termios,
.tiocmget = kobil_tiocmget,
.tiocmset = kobil_tiocmset,
.open = kobil_open,
.close = kobil_close,
.write = kobil_write,
.write_room = kobil_write_room,
.read_int_callback = kobil_read_int_callback,
.write_int_callback = kobil_write_int_callback,
};
static struct usb_serial_driver * const serial_drivers[] = {
&kobil_device, NULL
};
struct kobil_private {
unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */
int filled; /* index of the last char in buf */
int cur_pos; /* index of the next char to send in buf */
__u16 device_type;
};
static int kobil_port_probe(struct usb_serial_port *port)
{
struct usb_serial *serial = port->serial;
struct kobil_private *priv;
priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->filled = 0;
priv->cur_pos = 0;
priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
switch (priv->device_type) {
case KOBIL_ADAPTER_B_PRODUCT_ID:
dev_dbg(&serial->dev->dev, "KOBIL B1 PRO / KAAN PRO detected\n");
break;
case KOBIL_ADAPTER_K_PRODUCT_ID:
dev_dbg(&serial->dev->dev, "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
break;
case KOBIL_USBTWIN_PRODUCT_ID:
dev_dbg(&serial->dev->dev, "KOBIL USBTWIN detected\n");
break;
case KOBIL_KAAN_SIM_PRODUCT_ID:
dev_dbg(&serial->dev->dev, "KOBIL KAAN SIM detected\n");
break;
}
usb_set_serial_port_data(port, priv);
return 0;
}
static int kobil_port_remove(struct usb_serial_port *port)
{
struct kobil_private *priv;
priv = usb_get_serial_port_data(port);
kfree(priv);
return 0;
}
static void kobil_init_termios(struct tty_struct *tty)
{
/* Default to echo off and other sane device settings */
tty->termios.c_lflag = 0;
tty->termios.c_iflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
tty->termios.c_iflag |= IGNBRK | IGNPAR | IXOFF;
/* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
tty->termios.c_oflag &= ~ONLCR;
}
static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
{
struct device *dev = &port->dev;
int result = 0;
struct kobil_private *priv;
unsigned char *transfer_buffer;
int transfer_buffer_length = 8;
priv = usb_get_serial_port_data(port);
/* allocate memory for transfer buffer */
transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
if (!transfer_buffer)
return -ENOMEM;
/* get hardware version */
result = usb_control_msg(port->serial->dev,
usb_rcvctrlpipe(port->serial->dev, 0),
SUSBCRequest_GetMisc,
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
SUSBCR_MSC_GetHWVersion,
0,
transfer_buffer,
transfer_buffer_length,
KOBIL_TIMEOUT
);
dev_dbg(dev, "%s - Send get_HW_version URB returns: %i\n", __func__, result);
dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0],
transfer_buffer[1], transfer_buffer[2]);
/* get firmware version */
result = usb_control_msg(port->serial->dev,
usb_rcvctrlpipe(port->serial->dev, 0),
SUSBCRequest_GetMisc,
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
SUSBCR_MSC_GetFWVersion,
0,
transfer_buffer,
transfer_buffer_length,
KOBIL_TIMEOUT
);
dev_dbg(dev, "%s - Send get_FW_version URB returns: %i\n", __func__, result);
dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0],
transfer_buffer[1], transfer_buffer[2]);
if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
/* Setting Baudrate, Parity and Stopbits */
result = usb_control_msg(port->serial->dev,
usb_sndctrlpipe(port->serial->dev, 0),
SUSBCRequest_SetBaudRateParityAndStopBits,
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
SUSBCR_SPASB_1StopBit,
0,
NULL,
0,
KOBIL_TIMEOUT
);
dev_dbg(dev, "%s - Send set_baudrate URB returns: %i\n", __func__, result);
/* reset all queues */
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(dev, "%s - Send reset_all_queues URB returns: %i\n", __func__, result);
}
if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
/* start reading (Adapter B 'cause PNP string) */
result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
dev_dbg(dev, "%s - Send read URB returns: %i\n", __func__, result);
}
kfree(transfer_buffer);
return 0;
}
static void kobil_close(struct usb_serial_port *port)
{
/* FIXME: Add rts/dtr methods */
usb_kill_urb(port->interrupt_out_urb);
usb_kill_urb(port->interrupt_in_urb);
}
static void kobil_read_int_callback(struct urb *urb)
{
int result;
struct usb_serial_port *port = urb->context;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
if (status) {
dev_dbg(&port->dev, "%s - Read int status not zero: %d\n", __func__, status);
return;
}
if (urb->actual_length) {
usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
data);
tty_insert_flip_string(&port->port, data, urb->actual_length);
tty_flip_buffer_push(&port->port);
}
result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
}
static void kobil_write_int_callback(struct urb *urb)
{
}
static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
const unsigned char *buf, int count)
{
int length = 0;
int result = 0;
int todo = 0;
struct kobil_private *priv;
if (count == 0) {
dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
return 0;
}
priv = usb_get_serial_port_data(port);
if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
dev_dbg(&port->dev, "%s - Error: write request bigger than buffer size\n", __func__);
return -ENOMEM;
}
/* Copy data to buffer */
memcpy(priv->buf + priv->filled, buf, count);
usb_serial_debug_data(&port->dev, __func__, count, priv->buf + priv->filled);
priv->filled = priv->filled + count;
/* only send complete block. TWIN, KAAN SIM and adapter K
use the same protocol. */
if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
/* stop reading (except TWIN and KAAN SIM) */
if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
|| (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
usb_kill_urb(port->interrupt_in_urb);
todo = priv->filled - priv->cur_pos;
while (todo > 0) {
/* max 8 byte in one urb (endpoint size) */
length = min(todo, port->interrupt_out_size);
/* copy data to transfer buffer */
memcpy(port->interrupt_out_buffer,
priv->buf + priv->cur_pos, length);
port->interrupt_out_urb->transfer_buffer_length = length;
priv->cur_pos = priv->cur_pos + length;
result = usb_submit_urb(port->interrupt_out_urb,
GFP_ATOMIC);
dev_dbg(&port->dev, "%s - Send write URB returns: %i\n", __func__, result);
todo = priv->filled - priv->cur_pos;
if (todo > 0)
msleep(24);
}
priv->filled = 0;
priv->cur_pos = 0;
/* start reading (except TWIN and KAAN SIM) */
if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
result = usb_submit_urb(port->interrupt_in_urb,
GFP_ATOMIC);
dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
}
}
return count;
}
static int kobil_write_room(struct tty_struct *tty)
{
/* FIXME */
return 8;
}
static int kobil_tiocmget(struct tty_struct *tty)
{
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);
dev_dbg(&port->dev, "%s - Send get_status_line_state URB returns: %i. Statusline: %02x\n",
__func__, 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,
unsigned int set, unsigned int clear)
{
struct usb_serial_port *port = tty->driver_data;
struct device *dev = &port->dev;
struct kobil_private *priv;
int result;
int dtr = 0;
int rts = 0;
/* 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;
}
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)
dev_dbg(dev, "%s - Setting DTR\n", __func__);
else
dev_dbg(dev, "%s - Clearing DTR\n", __func__);
result = usb_control_msg(port->serial->dev,
usb_sndctrlpipe(port->serial->dev, 0),
SUSBCRequest_SetStatusLinesOrQueues,
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
0,
NULL,
0,
KOBIL_TIMEOUT);
} else {
if (rts != 0)
dev_dbg(dev, "%s - Setting RTS\n", __func__);
else
dev_dbg(dev, "%s - Clearing RTS\n", __func__);
result = usb_control_msg(port->serial->dev,
usb_sndctrlpipe(port->serial->dev, 0),
SUSBCRequest_SetStatusLinesOrQueues,
USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
0,
NULL,
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;
/* fall through */
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");