From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/usb/serial/cyberjack.c | 514 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 514 insertions(+) create mode 100644 drivers/usb/serial/cyberjack.c (limited to 'drivers/usb/serial/cyberjack.c') diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c new file mode 100644 index 00000000000..46a204cd40e --- /dev/null +++ b/drivers/usb/serial/cyberjack.c @@ -0,0 +1,514 @@ +/* + * REINER SCT cyberJack pinpad/e-com USB Chipcard Reader Driver + * + * Copyright (C) 2001 REINER SCT + * Author: Matthias Bruestle + * + * Contact: support@reiner-sct.com (see MAINTAINERS) + * + * 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. + * + * In case of problems, please write to the contact e-mail address + * mentioned above. + * + * Please note that later models of the cyberjack reader family are + * supported by a libusb-based userspace device driver. + * + * Homepage: http://www.reiner-sct.de/support/treiber_cyberjack.php#linux + */ + + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "usb-serial.h" + +#define CYBERJACK_LOCAL_BUF_SIZE 32 + +static int debug; + +/* + * Version Information + */ +#define DRIVER_VERSION "v1.01" +#define DRIVER_AUTHOR "Matthias Bruestle" +#define DRIVER_DESC "REINER SCT cyberJack pinpad/e-com USB Chipcard Reader Driver" + + +#define CYBERJACK_VENDOR_ID 0x0C4B +#define CYBERJACK_PRODUCT_ID 0x0100 + +/* Function prototypes */ +static int cyberjack_startup (struct usb_serial *serial); +static void cyberjack_shutdown (struct usb_serial *serial); +static int cyberjack_open (struct usb_serial_port *port, struct file *filp); +static void cyberjack_close (struct usb_serial_port *port, struct file *filp); +static int cyberjack_write (struct usb_serial_port *port, const unsigned char *buf, int count); +static int cyberjack_write_room( struct usb_serial_port *port ); +static void cyberjack_read_int_callback (struct urb *urb, struct pt_regs *regs); +static void cyberjack_read_bulk_callback (struct urb *urb, struct pt_regs *regs); +static void cyberjack_write_bulk_callback (struct urb *urb, struct pt_regs *regs); + +static struct usb_device_id id_table [] = { + { USB_DEVICE(CYBERJACK_VENDOR_ID, CYBERJACK_PRODUCT_ID) }, + { } /* Terminating entry */ +}; + +MODULE_DEVICE_TABLE (usb, id_table); + +static struct usb_driver cyberjack_driver = { + .owner = THIS_MODULE, + .name = "cyberjack", + .probe = usb_serial_probe, + .disconnect = usb_serial_disconnect, + .id_table = id_table, +}; + +static struct usb_serial_device_type cyberjack_device = { + .owner = THIS_MODULE, + .name = "Reiner SCT Cyberjack USB card reader", + .short_name = "cyberjack", + .id_table = id_table, + .num_interrupt_in = 1, + .num_bulk_in = 1, + .num_bulk_out = 1, + .num_ports = 1, + .attach = cyberjack_startup, + .shutdown = cyberjack_shutdown, + .open = cyberjack_open, + .close = cyberjack_close, + .write = cyberjack_write, + .write_room = cyberjack_write_room, + .read_int_callback = cyberjack_read_int_callback, + .read_bulk_callback = cyberjack_read_bulk_callback, + .write_bulk_callback = cyberjack_write_bulk_callback, +}; + +struct cyberjack_private { + spinlock_t lock; /* Lock for SMP */ + short rdtodo; /* Bytes still to read */ + unsigned char wrbuf[5*64]; /* Buffer for collecting data to write */ + short wrfilled; /* Overall data size we already got */ + short wrsent; /* Data already sent */ +}; + +/* do some startup allocations not currently performed by usb_serial_probe() */ +static int cyberjack_startup (struct usb_serial *serial) +{ + struct cyberjack_private *priv; + int i; + + dbg("%s", __FUNCTION__); + + /* allocate the private data structure */ + priv = kmalloc(sizeof(struct cyberjack_private), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + /* set initial values */ + spin_lock_init(&priv->lock); + priv->rdtodo = 0; + priv->wrfilled = 0; + priv->wrsent = 0; + usb_set_serial_port_data(serial->port[0], priv); + + init_waitqueue_head(&serial->port[0]->write_wait); + + for (i = 0; i < serial->num_ports; ++i) { + int result; + serial->port[i]->interrupt_in_urb->dev = serial->dev; + result = usb_submit_urb(serial->port[i]->interrupt_in_urb, + GFP_KERNEL); + if (result) + err(" usb_submit_urb(read int) failed"); + dbg("%s - usb_submit_urb(int urb)", __FUNCTION__); + } + + return( 0 ); +} + +static void cyberjack_shutdown (struct usb_serial *serial) +{ + int i; + + dbg("%s", __FUNCTION__); + + for (i=0; i < serial->num_ports; ++i) { + usb_kill_urb(serial->port[i]->interrupt_in_urb); + /* My special items, the standard routines free my urbs */ + kfree(usb_get_serial_port_data(serial->port[i])); + usb_set_serial_port_data(serial->port[i], NULL); + } +} + +static int cyberjack_open (struct usb_serial_port *port, struct file *filp) +{ + struct cyberjack_private *priv; + unsigned long flags; + int result = 0; + + dbg("%s - port %d", __FUNCTION__, port->number); + + dbg("%s - usb_clear_halt", __FUNCTION__ ); + usb_clear_halt(port->serial->dev, port->write_urb->pipe); + + /* 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; + + priv = usb_get_serial_port_data(port); + spin_lock_irqsave(&priv->lock, flags); + priv->rdtodo = 0; + priv->wrfilled = 0; + priv->wrsent = 0; + spin_unlock_irqrestore(&priv->lock, flags); + + return result; +} + +static void cyberjack_close (struct usb_serial_port *port, struct file *filp) +{ + dbg("%s - port %d", __FUNCTION__, port->number); + + if (port->serial->dev) { + /* shutdown any bulk reads that might be going on */ + usb_kill_urb(port->write_urb); + usb_kill_urb(port->read_urb); + } +} + +static int cyberjack_write (struct usb_serial_port *port, const unsigned char *buf, int count) +{ + struct usb_serial *serial = port->serial; + struct cyberjack_private *priv = usb_get_serial_port_data(port); + unsigned long flags; + int result; + int wrexpected; + + dbg("%s - port %d", __FUNCTION__, port->number); + + if (count == 0) { + dbg("%s - write request of 0 bytes", __FUNCTION__); + return (0); + } + + if (port->write_urb->status == -EINPROGRESS) { + dbg("%s - already writing", __FUNCTION__); + return (0); + } + + spin_lock_irqsave(&priv->lock, flags); + + if( (count+priv->wrfilled)>sizeof(priv->wrbuf) ) { + /* To much data for buffer. Reset buffer. */ + priv->wrfilled=0; + spin_unlock_irqrestore(&priv->lock, flags); + return (0); + } + + /* Copy data */ + memcpy (priv->wrbuf+priv->wrfilled, buf, count); + + usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, + priv->wrbuf+priv->wrfilled); + priv->wrfilled += count; + + if( priv->wrfilled >= 3 ) { + wrexpected = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3; + dbg("%s - expected data: %d", __FUNCTION__, wrexpected); + } else { + wrexpected = sizeof(priv->wrbuf); + } + + if( priv->wrfilled >= wrexpected ) { + /* We have enough data to begin transmission */ + int length; + + dbg("%s - transmitting data (frame 1)", __FUNCTION__); + length = (wrexpected > port->bulk_out_size) ? port->bulk_out_size : wrexpected; + + memcpy (port->write_urb->transfer_buffer, priv->wrbuf, length ); + priv->wrsent=length; + + /* set up our urb */ + usb_fill_bulk_urb(port->write_urb, serial->dev, + usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress), + port->write_urb->transfer_buffer, length, + ((serial->type->write_bulk_callback) ? + serial->type->write_bulk_callback : + cyberjack_write_bulk_callback), + port); + + /* send the data out the bulk port */ + result = usb_submit_urb(port->write_urb, GFP_ATOMIC); + if (result) { + err("%s - failed submitting write urb, error %d", __FUNCTION__, result); + /* Throw away data. No better idea what to do with it. */ + priv->wrfilled=0; + priv->wrsent=0; + spin_unlock_irqrestore(&priv->lock, flags); + return 0; + } + + dbg("%s - priv->wrsent=%d", __FUNCTION__,priv->wrsent); + dbg("%s - priv->wrfilled=%d", __FUNCTION__,priv->wrfilled); + + if( priv->wrsent>=priv->wrfilled ) { + dbg("%s - buffer cleaned", __FUNCTION__); + memset( priv->wrbuf, 0, sizeof(priv->wrbuf) ); + priv->wrfilled=0; + priv->wrsent=0; + } + } + + spin_unlock_irqrestore(&priv->lock, flags); + + return (count); +} + +static int cyberjack_write_room( struct usb_serial_port *port ) +{ + return CYBERJACK_LOCAL_BUF_SIZE; +} + +static void cyberjack_read_int_callback( struct urb *urb, struct pt_regs *regs ) +{ + struct usb_serial_port *port = (struct usb_serial_port *)urb->context; + struct cyberjack_private *priv = usb_get_serial_port_data(port); + unsigned char *data = urb->transfer_buffer; + int result; + + dbg("%s - port %d", __FUNCTION__, port->number); + + /* the urb might have been killed. */ + if (urb->status) + return; + + usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data); + + /* React only to interrupts signaling a bulk_in transfer */ + if( (urb->actual_length==4) && (data[0]==0x01) ) { + short old_rdtodo; + int result; + + /* This is a announcement of coming bulk_ins. */ + unsigned short size = ((unsigned short)data[3]<<8)+data[2]+3; + + spin_lock(&priv->lock); + + old_rdtodo = priv->rdtodo; + + if( (old_rdtodo+size)<(old_rdtodo) ) { + dbg( "To many bulk_in urbs to do." ); + spin_unlock(&priv->lock); + goto resubmit; + } + + /* "+=" is probably more fault tollerant than "=" */ + priv->rdtodo += size; + + dbg("%s - rdtodo: %d", __FUNCTION__, priv->rdtodo); + + spin_unlock(&priv->lock); + + if( !old_rdtodo ) { + port->read_urb->dev = port->serial->dev; + result = usb_submit_urb(port->read_urb, GFP_ATOMIC); + if( result ) + err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); + dbg("%s - usb_submit_urb(read urb)", __FUNCTION__); + } + } + +resubmit: + port->interrupt_in_urb->dev = port->serial->dev; + result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); + if (result) + err(" usb_submit_urb(read int) failed"); + dbg("%s - usb_submit_urb(int urb)", __FUNCTION__); +} + +static void cyberjack_read_bulk_callback (struct urb *urb, struct pt_regs *regs) +{ + struct usb_serial_port *port = (struct usb_serial_port *)urb->context; + struct cyberjack_private *priv = usb_get_serial_port_data(port); + struct tty_struct *tty; + unsigned char *data = urb->transfer_buffer; + short todo; + int i; + int result; + + dbg("%s - port %d", __FUNCTION__, port->number); + + usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data); + if (urb->status) { + dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status); + return; + } + + tty = port->tty; + if (!tty) { + dbg("%s - ignoring since device not open\n", __FUNCTION__); + return; + } + if (urb->actual_length) { + for (i = 0; i < urb->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); + } + + spin_lock(&priv->lock); + + /* Reduce urbs to do by one. */ + priv->rdtodo-=urb->actual_length; + /* Just to be sure */ + if ( priv->rdtodo<0 ) priv->rdtodo = 0; + todo = priv->rdtodo; + + spin_unlock(&priv->lock); + + dbg("%s - rdtodo: %d", __FUNCTION__, todo); + + /* Continue to read if we have still urbs to do. */ + if( todo /* || (urb->actual_length==port->bulk_in_endpointAddress)*/ ) { + port->read_urb->dev = port->serial->dev; + result = usb_submit_urb(port->read_urb, GFP_ATOMIC); + if (result) + err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); + dbg("%s - usb_submit_urb(read urb)", __FUNCTION__); + } +} + +static void cyberjack_write_bulk_callback (struct urb *urb, struct pt_regs *regs) +{ + struct usb_serial_port *port = (struct usb_serial_port *)urb->context; + struct cyberjack_private *priv = usb_get_serial_port_data(port); + + dbg("%s - port %d", __FUNCTION__, port->number); + + if (urb->status) { + dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status); + return; + } + + spin_lock(&priv->lock); + + /* only do something if we have more data to send */ + if( priv->wrfilled ) { + int length, blksize, result; + + if (port->write_urb->status == -EINPROGRESS) { + dbg("%s - already writing", __FUNCTION__); + spin_unlock(&priv->lock); + return; + } + + dbg("%s - transmitting data (frame n)", __FUNCTION__); + + length = ((priv->wrfilled - priv->wrsent) > port->bulk_out_size) ? + port->bulk_out_size : (priv->wrfilled - priv->wrsent); + + memcpy (port->write_urb->transfer_buffer, priv->wrbuf + priv->wrsent, + length ); + priv->wrsent+=length; + + /* set up our urb */ + usb_fill_bulk_urb(port->write_urb, port->serial->dev, + usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), + port->write_urb->transfer_buffer, length, + ((port->serial->type->write_bulk_callback) ? + port->serial->type->write_bulk_callback : + cyberjack_write_bulk_callback), + port); + + /* send the data out the bulk port */ + result = usb_submit_urb(port->write_urb, GFP_ATOMIC); + if (result) { + err("%s - failed submitting write urb, error %d", __FUNCTION__, result); + /* Throw away data. No better idea what to do with it. */ + priv->wrfilled=0; + priv->wrsent=0; + goto exit; + } + + dbg("%s - priv->wrsent=%d", __FUNCTION__,priv->wrsent); + dbg("%s - priv->wrfilled=%d", __FUNCTION__,priv->wrfilled); + + blksize = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3; + + if( (priv->wrsent>=priv->wrfilled) || (priv->wrsent>=blksize) ) { + dbg("%s - buffer cleaned", __FUNCTION__); + memset( priv->wrbuf, 0, sizeof(priv->wrbuf) ); + priv->wrfilled=0; + priv->wrsent=0; + } + } + +exit: + spin_unlock(&priv->lock); + schedule_work(&port->work); +} + +static int __init cyberjack_init (void) +{ + int retval; + retval = usb_serial_register(&cyberjack_device); + if (retval) + goto failed_usb_serial_register; + retval = usb_register(&cyberjack_driver); + if (retval) + goto failed_usb_register; + + info(DRIVER_VERSION " " DRIVER_AUTHOR); + info(DRIVER_DESC); + + return 0; +failed_usb_register: + usb_serial_deregister(&cyberjack_device); +failed_usb_serial_register: + return retval; +} + +static void __exit cyberjack_exit (void) +{ + usb_deregister (&cyberjack_driver); + usb_serial_deregister (&cyberjack_device); +} + +module_init(cyberjack_init); +module_exit(cyberjack_exit); + +MODULE_AUTHOR( DRIVER_AUTHOR ); +MODULE_DESCRIPTION( DRIVER_DESC ); +MODULE_VERSION( DRIVER_VERSION ); +MODULE_LICENSE("GPL"); + +module_param(debug, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Debug enabled or not"); -- cgit v1.2.3