diff options
Diffstat (limited to 'drivers/usb/serial/kobil_sct.c')
| -rw-r--r-- | drivers/usb/serial/kobil_sct.c | 774 |
1 files changed, 774 insertions, 0 deletions
diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c new file mode 100644 index 000000000000..fe4c98a75171 --- /dev/null +++ b/drivers/usb/serial/kobil_sct.c @@ -0,0 +1,774 @@ +/* + * 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. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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) + * + * (21/05/2004) tw + * Fix bug with P'n'P readers + * + * (28/05/2003) tw + * Add support for KAAN SIM + * + * (12/09/2002) tw + * Adapted to 2.5. + * + * (11/08/2002) tw + * Initial version. + */ + + +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/init.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 <asm/uaccess.h> +#include <linux/usb.h> +#include <linux/ioctl.h> +#include "usb-serial.h" +#include "kobil_sct.h" + +static int debug; + +/* Version Information */ +#define DRIVER_VERSION "21/05/2004" +#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_startup (struct usb_serial *serial); +static void kobil_shutdown (struct usb_serial *serial); +static int kobil_open (struct usb_serial_port *port, struct file *filp); +static void kobil_close (struct usb_serial_port *port, struct file *filp); +static int kobil_write (struct usb_serial_port *port, + const unsigned char *buf, int count); +static int kobil_write_room(struct usb_serial_port *port); +static int kobil_ioctl(struct usb_serial_port *port, struct file *file, + unsigned int cmd, unsigned long arg); +static int kobil_tiocmget(struct usb_serial_port *port, struct file *file); +static int kobil_tiocmset(struct usb_serial_port *port, struct file *file, + unsigned int set, unsigned int clear); +static void kobil_read_int_callback( struct urb *urb, struct pt_regs *regs ); +static void kobil_write_callback( struct urb *purb, struct pt_regs *regs ); + + +static 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_driver kobil_driver = { + .owner = THIS_MODULE, + .name = "kobil", + .probe = usb_serial_probe, + .disconnect = usb_serial_disconnect, + .id_table = id_table, +}; + + +static struct usb_serial_device_type kobil_device = { + .owner = THIS_MODULE, + .name = "KOBIL USB smart card terminal", + .id_table = id_table, + .num_interrupt_in = NUM_DONT_CARE, + .num_bulk_in = 0, + .num_bulk_out = 0, + .num_ports = 1, + .attach = kobil_startup, + .shutdown = kobil_shutdown, + .ioctl = kobil_ioctl, + .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, +}; + + +struct kobil_private { + int write_int_endpoint_address; + int read_int_endpoint_address; + 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; + int line_state; + struct termios internal_termios; +}; + + +static int kobil_startup (struct usb_serial *serial) +{ + int i; + struct kobil_private *priv; + struct usb_device *pdev; + struct usb_host_config *actconfig; + struct usb_interface *interface; + struct usb_host_interface *altsetting; + struct usb_host_endpoint *endpoint; + + 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); + priv->line_state = 0; + + switch (priv->device_type){ + case KOBIL_ADAPTER_B_PRODUCT_ID: + printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n"); + break; + case KOBIL_ADAPTER_K_PRODUCT_ID: + printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n"); + break; + case KOBIL_USBTWIN_PRODUCT_ID: + printk(KERN_DEBUG "KOBIL USBTWIN detected\n"); + break; + case KOBIL_KAAN_SIM_PRODUCT_ID: + printk(KERN_DEBUG "KOBIL KAAN SIM detected\n"); + break; + } + usb_set_serial_port_data(serial->port[0], priv); + + // search for the necessary endpoints + pdev = serial->dev; + actconfig = pdev->actconfig; + interface = actconfig->interface[0]; + altsetting = interface->cur_altsetting; + endpoint = altsetting->endpoint; + + for (i = 0; i < altsetting->desc.bNumEndpoints; i++) { + endpoint = &altsetting->endpoint[i]; + if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) && + ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) { + dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress); + priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress; + } + if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) && + ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) { + dbg("%s Found interrupt in endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress); + priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress; + } + } + return 0; +} + + +static void kobil_shutdown (struct usb_serial *serial) +{ + int i; + dbg("%s - port %d", __FUNCTION__, serial->port[0]->number); + + for (i=0; i < serial->num_ports; ++i) { + while (serial->port[i]->open_count > 0) { + kobil_close (serial->port[i], NULL); + } + kfree(usb_get_serial_port_data(serial->port[i])); + usb_set_serial_port_data(serial->port[i], NULL); + } +} + + +static int kobil_open (struct usb_serial_port *port, struct file *filp) +{ + int i, result = 0; + struct kobil_private *priv; + unsigned char *transfer_buffer; + int transfer_buffer_length = 8; + int write_urb_transfer_buffer_length = 8; + + dbg("%s - port %d", __FUNCTION__, port->number); + priv = usb_get_serial_port_data(port); + priv->line_state = 0; + + // someone sets the dev to 0 if the close method has been called + port->interrupt_in_urb->dev = port->serial->dev; + + + /* force low_latency on so that our tty_push actually forces + * the data through, otherwise it is scheduled, and with high + * data rates (like with OHCI) data can get lost. + */ + port->tty->low_latency = 1; + + // without this, every push_tty_char is echoed :-( + port->tty->termios->c_lflag = 0; + port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE); + port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF; + port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) + + // set up internal termios structure + priv->internal_termios.c_iflag = port->tty->termios->c_iflag; + priv->internal_termios.c_oflag = port->tty->termios->c_oflag; + priv->internal_termios.c_cflag = port->tty->termios->c_cflag; + priv->internal_termios.c_lflag = port->tty->termios->c_lflag; + + for (i=0; i<NCCS; i++) { + priv->internal_termios.c_cc[i] = port->tty->termios->c_cc[i]; + } + + // allocate memory for transfer buffer + transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL); + if (! transfer_buffer) { + return -ENOMEM; + } else { + memset(transfer_buffer, 0, transfer_buffer_length); + } + + // allocate write_urb + if (!port->write_urb) { + dbg("%s - port %d Allocating port->write_urb", __FUNCTION__, port->number); + port->write_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!port->write_urb) { + dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number); + kfree(transfer_buffer); + return -ENOMEM; + } + } + + // allocate memory for write_urb transfer buffer + port->write_urb->transfer_buffer = (unsigned char *) kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL); + if (! port->write_urb->transfer_buffer) { + kfree(transfer_buffer); + usb_free_urb(port->write_urb); + port->write_urb = NULL; + 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 + ); + dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result); + dbg("Harware version: %i.%i.%i", 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 + ); + dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result); + dbg("Firmware version: %i.%i.%i", 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_rcvctrlpipe(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, + transfer_buffer, + 0, + KOBIL_TIMEOUT + ); + dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result); + + // reset all queues + 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, + transfer_buffer, + 0, + KOBIL_TIMEOUT + ); + dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, 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_ATOMIC ); + dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result); + } + + kfree(transfer_buffer); + return 0; +} + + +static void kobil_close (struct usb_serial_port *port, struct file *filp) +{ + dbg("%s - port %d", __FUNCTION__, port->number); + + if (port->write_urb) { + usb_kill_urb(port->write_urb); + usb_free_urb( port->write_urb ); + port->write_urb = NULL; + } + if (port->interrupt_in_urb) + usb_kill_urb(port->interrupt_in_urb); +} + + +static void kobil_read_int_callback( struct urb *purb, struct pt_regs *regs) +{ + int i; + int result; + struct usb_serial_port *port = (struct usb_serial_port *) purb->context; + struct tty_struct *tty; + unsigned char *data = purb->transfer_buffer; +// char *dbg_data; + + dbg("%s - port %d", __FUNCTION__, port->number); + + if (purb->status) { + dbg("%s - port %d Read int status not zero: %d", __FUNCTION__, port->number, purb->status); + return; + } + + tty = port->tty; + if (purb->actual_length) { + + // BEGIN DEBUG + /* + dbg_data = (unsigned char *) kmalloc((3 * purb->actual_length + 10) * sizeof(char), GFP_KERNEL); + if (! dbg_data) { + return; + } + memset(dbg_data, 0, (3 * purb->actual_length + 10)); + for (i = 0; i < purb->actual_length; i++) { + sprintf(dbg_data +3*i, "%02X ", data[i]); + } + dbg(" <-- %s", dbg_data ); + kfree(dbg_data); + */ + // END DEBUG + + for (i = 0; i < purb->actual_length; ++i) { + // if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. + if(tty->flip.count >= TTY_FLIPBUF_SIZE) { + tty_flip_buffer_push(tty); + } + // this doesn't actually push the data through unless tty->low_latency is set + tty_insert_flip_char(tty, data[i], 0); + } + tty_flip_buffer_push(tty); + } + + // 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_ATOMIC ); + dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result); +} + + +static void kobil_write_callback( struct urb *purb, struct pt_regs *regs ) +{ +} + + +static int kobil_write (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) { + dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number); + return 0; + } + + priv = usb_get_serial_port_data(port); + + if (count > (KOBIL_BUF_LENGTH - priv->filled)) { + dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number); + return -ENOMEM; + } + + // Copy data to buffer + memcpy (priv->buf + priv->filled, buf, count); + + usb_serial_debug_data(debug, &port->dev, __FUNCTION__, 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 = (todo < 8) ? todo : 8; + // copy data to transfer buffer + memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length ); + usb_fill_int_urb( port->write_urb, + port->serial->dev, + usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address), + port->write_urb->transfer_buffer, + length, + kobil_write_callback, + port, + 8 + ); + + priv->cur_pos = priv->cur_pos + length; + result = usb_submit_urb( port->write_urb, GFP_NOIO ); + dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result); + todo = priv->filled - priv->cur_pos; + + if (todo > 0) { + msleep(24); + } + + } // end while + + 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", __FUNCTION__, port->number, result); + } + } + return count; +} + + +static int kobil_write_room (struct usb_serial_port *port) +{ + //dbg("%s - port %d", __FUNCTION__, port->number); + return 8; +} + + +static int kobil_tiocmget(struct usb_serial_port *port, struct file *file) +{ + 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 = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL); + if (!transfer_buffer) { + return -ENOMEM; + } + memset(transfer_buffer, 0, transfer_buffer_length); + + 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", + __FUNCTION__, port->number, result, transfer_buffer[0]); + + if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) { + priv->line_state |= TIOCM_DSR; + } else { + priv->line_state &= ~TIOCM_DSR; + } + + kfree(transfer_buffer); + return priv->line_state; +} + +static int kobil_tiocmset(struct usb_serial_port *port, struct file *file, + unsigned int set, unsigned int clear) +{ + struct kobil_private * priv; + int result; + int dtr = 0; + int rts = 0; + 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 = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL); + if (! transfer_buffer) { + return -ENOMEM; + } + memset(transfer_buffer, 0, transfer_buffer_length); + + 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", __FUNCTION__, port->number); + else + dbg("%s - port %d Clearing DTR", __FUNCTION__, 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", __FUNCTION__, port->number); + else + dbg("%s - port %d Clearing RTS", __FUNCTION__, 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", __FUNCTION__, port->number, result); + kfree(transfer_buffer); + return (result < 0) ? result : 0; +} + + +static int kobil_ioctl(struct usb_serial_port *port, struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct kobil_private * priv; + int result; + unsigned short urb_val = 0; + unsigned char *transfer_buffer; + int transfer_buffer_length = 8; + char *settings; + void __user *user_arg = (void __user *)arg; + + 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 0; + } + + switch (cmd) { + case TCGETS: // 0x5401 + if (!access_ok(VERIFY_WRITE, user_arg, sizeof(struct termios))) { + dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number); + return -EFAULT; + } + if (kernel_termios_to_user_termios((struct termios __user *)arg, + &priv->internal_termios)) + return -EFAULT; + return 0; + + case TCSETS: // 0x5402 + if (!(port->tty->termios)) { + dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number); + return -ENOTTY; + } + if (!access_ok(VERIFY_READ, user_arg, sizeof(struct termios))) { + dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number); + return -EFAULT; + } + if (user_termios_to_kernel_termios(&priv->internal_termios, + (struct termios __user *)arg)) + return -EFAULT; + + settings = (unsigned char *) kmalloc(50, GFP_KERNEL); + if (! settings) { + return -ENOBUFS; + } + memset(settings, 0, 50); + + switch (priv->internal_termios.c_cflag & CBAUD) { + case B1200: + urb_val = SUSBCR_SBR_1200; + strcat(settings, "1200 "); + break; + case B9600: + default: + urb_val = SUSBCR_SBR_9600; + strcat(settings, "9600 "); + break; + } + + urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit; + strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit "); + + if (priv->internal_termios.c_cflag & PARENB) { + if (priv->internal_termios.c_cflag & PARODD) { + urb_val |= SUSBCR_SPASB_OddParity; + strcat(settings, "Odd Parity"); + } else { + urb_val |= SUSBCR_SPASB_EvenParity; + strcat(settings, "Even Parity"); + } + } else { + urb_val |= SUSBCR_SPASB_NoParity; + strcat(settings, "No Parity"); + } + dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings ); + + 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, + settings, + 0, + KOBIL_TIMEOUT + ); + + dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result); + kfree(settings); + return 0; + + case TCFLSH: // 0x540B + transfer_buffer = (unsigned char *) 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", __FUNCTION__, port->number, result); + + kfree(transfer_buffer); + return ((result < 0) ? -EFAULT : 0); + + } + 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; + + info(DRIVER_VERSION " " DRIVER_AUTHOR); + info(DRIVER_DESC); + + 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"); |
