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path: root/drivers/usb/serial/kobil_sct.c
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Diffstat (limited to 'drivers/usb/serial/kobil_sct.c')
-rw-r--r--drivers/usb/serial/kobil_sct.c573
1 files changed, 573 insertions, 0 deletions
diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c
new file mode 100644
index 000000000..5e775f68f
--- /dev/null
+++ b/drivers/usb/serial/kobil_sct.c
@@ -0,0 +1,573 @@
+// 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 void 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 unsigned 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,
+ const 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 void kobil_port_remove(struct usb_serial_port *port)
+{
+ struct kobil_private *priv;
+
+ priv = usb_get_serial_port_data(port);
+ kfree(priv);
+}
+
+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);
+ if (result >= 3) {
+ 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);
+ if (result >= 3) {
+ 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 unsigned 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, "Send get_status_line_state URB returns: %i\n",
+ result);
+ if (result < 1) {
+ if (result >= 0)
+ result = -EIO;
+ goto out_free;
+ }
+
+ dev_dbg(&port->dev, "Statusline: %02x\n", transfer_buffer[0]);
+
+ result = 0;
+ if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
+ result = TIOCM_DSR;
+out_free:
+ 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,
+ const 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;
+ fallthrough;
+ 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
+ );
+ if (result) {
+ dev_err(&port->dev, "failed to update line settings: %d\n",
+ result);
+ }
+}
+
+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");