Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * REINER SCT cyberJack pinpad/e-com USB Chipcard Reader Driver |
| 3 | * |
| 4 | * Copyright (C) 2001 REINER SCT |
| 5 | * Author: Matthias Bruestle |
| 6 | * |
| 7 | * Contact: support@reiner-sct.com (see MAINTAINERS) |
| 8 | * |
| 9 | * This program is largely derived from work by the linux-usb group |
| 10 | * and associated source files. Please see the usb/serial files for |
| 11 | * individual credits and copyrights. |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or modify |
| 14 | * it under the terms of the GNU General Public License as published by |
| 15 | * the Free Software Foundation; either version 2 of the License, or |
| 16 | * (at your option) any later version. |
| 17 | * |
| 18 | * Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and |
| 19 | * patience. |
| 20 | * |
| 21 | * In case of problems, please write to the contact e-mail address |
| 22 | * mentioned above. |
| 23 | * |
| 24 | * Please note that later models of the cyberjack reader family are |
| 25 | * supported by a libusb-based userspace device driver. |
| 26 | * |
| 27 | * Homepage: http://www.reiner-sct.de/support/treiber_cyberjack.php#linux |
| 28 | */ |
| 29 | |
| 30 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/kernel.h> |
| 32 | #include <linux/errno.h> |
| 33 | #include <linux/init.h> |
| 34 | #include <linux/slab.h> |
| 35 | #include <linux/tty.h> |
| 36 | #include <linux/tty_driver.h> |
| 37 | #include <linux/tty_flip.h> |
| 38 | #include <linux/module.h> |
| 39 | #include <linux/spinlock.h> |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 40 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <linux/usb.h> |
Greg Kroah-Hartman | a969888 | 2006-07-11 21:22:58 -0700 | [diff] [blame] | 42 | #include <linux/usb/serial.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
| 44 | #define CYBERJACK_LOCAL_BUF_SIZE 32 |
| 45 | |
| 46 | static int debug; |
| 47 | |
| 48 | /* |
| 49 | * Version Information |
| 50 | */ |
| 51 | #define DRIVER_VERSION "v1.01" |
| 52 | #define DRIVER_AUTHOR "Matthias Bruestle" |
| 53 | #define DRIVER_DESC "REINER SCT cyberJack pinpad/e-com USB Chipcard Reader Driver" |
| 54 | |
| 55 | |
| 56 | #define CYBERJACK_VENDOR_ID 0x0C4B |
| 57 | #define CYBERJACK_PRODUCT_ID 0x0100 |
| 58 | |
| 59 | /* Function prototypes */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 60 | static int cyberjack_startup(struct usb_serial *serial); |
| 61 | static void cyberjack_shutdown(struct usb_serial *serial); |
| 62 | static int cyberjack_open(struct tty_struct *tty, |
| 63 | struct usb_serial_port *port, struct file *filp); |
| 64 | static void cyberjack_close(struct tty_struct *tty, |
| 65 | struct usb_serial_port *port, struct file *filp); |
| 66 | static int cyberjack_write(struct tty_struct *tty, |
| 67 | struct usb_serial_port *port, const unsigned char *buf, int count); |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 68 | static int cyberjack_write_room(struct tty_struct *tty); |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 69 | static void cyberjack_read_int_callback(struct urb *urb); |
| 70 | static void cyberjack_read_bulk_callback(struct urb *urb); |
| 71 | static void cyberjack_write_bulk_callback(struct urb *urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | |
| 73 | static struct usb_device_id id_table [] = { |
| 74 | { USB_DEVICE(CYBERJACK_VENDOR_ID, CYBERJACK_PRODUCT_ID) }, |
| 75 | { } /* Terminating entry */ |
| 76 | }; |
| 77 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 78 | MODULE_DEVICE_TABLE(usb, id_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
| 80 | static struct usb_driver cyberjack_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | .name = "cyberjack", |
| 82 | .probe = usb_serial_probe, |
| 83 | .disconnect = usb_serial_disconnect, |
| 84 | .id_table = id_table, |
Greg Kroah-Hartman | ba9dc65 | 2005-11-16 13:41:28 -0800 | [diff] [blame] | 85 | .no_dynamic_id = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | }; |
| 87 | |
Greg Kroah-Hartman | ea65370 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 88 | static struct usb_serial_driver cyberjack_device = { |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 89 | .driver = { |
| 90 | .owner = THIS_MODULE, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 91 | .name = "cyberjack", |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 92 | }, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 93 | .description = "Reiner SCT Cyberjack USB card reader", |
Johannes Hölzl | d9b1b78 | 2006-12-17 21:50:24 +0100 | [diff] [blame] | 94 | .usb_driver = &cyberjack_driver, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | .id_table = id_table, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | .num_ports = 1, |
| 97 | .attach = cyberjack_startup, |
| 98 | .shutdown = cyberjack_shutdown, |
| 99 | .open = cyberjack_open, |
| 100 | .close = cyberjack_close, |
| 101 | .write = cyberjack_write, |
Johannes Hölzl | d9b1b78 | 2006-12-17 21:50:24 +0100 | [diff] [blame] | 102 | .write_room = cyberjack_write_room, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | .read_int_callback = cyberjack_read_int_callback, |
| 104 | .read_bulk_callback = cyberjack_read_bulk_callback, |
| 105 | .write_bulk_callback = cyberjack_write_bulk_callback, |
| 106 | }; |
| 107 | |
| 108 | struct cyberjack_private { |
| 109 | spinlock_t lock; /* Lock for SMP */ |
| 110 | short rdtodo; /* Bytes still to read */ |
| 111 | unsigned char wrbuf[5*64]; /* Buffer for collecting data to write */ |
| 112 | short wrfilled; /* Overall data size we already got */ |
| 113 | short wrsent; /* Data already sent */ |
| 114 | }; |
| 115 | |
| 116 | /* do some startup allocations not currently performed by usb_serial_probe() */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 117 | static int cyberjack_startup(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | { |
| 119 | struct cyberjack_private *priv; |
| 120 | int i; |
| 121 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 122 | dbg("%s", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | |
| 124 | /* allocate the private data structure */ |
| 125 | priv = kmalloc(sizeof(struct cyberjack_private), GFP_KERNEL); |
| 126 | if (!priv) |
| 127 | return -ENOMEM; |
| 128 | |
| 129 | /* set initial values */ |
| 130 | spin_lock_init(&priv->lock); |
| 131 | priv->rdtodo = 0; |
| 132 | priv->wrfilled = 0; |
| 133 | priv->wrsent = 0; |
| 134 | usb_set_serial_port_data(serial->port[0], priv); |
| 135 | |
| 136 | init_waitqueue_head(&serial->port[0]->write_wait); |
| 137 | |
| 138 | for (i = 0; i < serial->num_ports; ++i) { |
| 139 | int result; |
| 140 | serial->port[i]->interrupt_in_urb->dev = serial->dev; |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 141 | result = usb_submit_urb(serial->port[i]->interrupt_in_urb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | GFP_KERNEL); |
| 143 | if (result) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 144 | dev_err(&serial->dev->dev, |
| 145 | "usb_submit_urb(read int) failed\n"); |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 146 | dbg("%s - usb_submit_urb(int urb)", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | } |
| 148 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 149 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | } |
| 151 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 152 | static void cyberjack_shutdown(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | { |
| 154 | int i; |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 155 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 156 | dbg("%s", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 158 | for (i = 0; i < serial->num_ports; ++i) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | usb_kill_urb(serial->port[i]->interrupt_in_urb); |
| 160 | /* My special items, the standard routines free my urbs */ |
| 161 | kfree(usb_get_serial_port_data(serial->port[i])); |
| 162 | usb_set_serial_port_data(serial->port[i], NULL); |
| 163 | } |
| 164 | } |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 165 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 166 | static int cyberjack_open(struct tty_struct *tty, |
| 167 | struct usb_serial_port *port, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | { |
| 169 | struct cyberjack_private *priv; |
| 170 | unsigned long flags; |
| 171 | int result = 0; |
| 172 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 173 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 175 | dbg("%s - usb_clear_halt", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | usb_clear_halt(port->serial->dev, port->write_urb->pipe); |
| 177 | |
| 178 | /* force low_latency on so that our tty_push actually forces |
| 179 | * the data through, otherwise it is scheduled, and with high |
| 180 | * data rates (like with OHCI) data can get lost. |
| 181 | */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 182 | if (tty) |
| 183 | tty->low_latency = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | |
| 185 | priv = usb_get_serial_port_data(port); |
| 186 | spin_lock_irqsave(&priv->lock, flags); |
| 187 | priv->rdtodo = 0; |
| 188 | priv->wrfilled = 0; |
| 189 | priv->wrsent = 0; |
| 190 | spin_unlock_irqrestore(&priv->lock, flags); |
| 191 | |
| 192 | return result; |
| 193 | } |
| 194 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 195 | static void cyberjack_close(struct tty_struct *tty, |
| 196 | struct usb_serial_port *port, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 198 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | |
| 200 | if (port->serial->dev) { |
| 201 | /* shutdown any bulk reads that might be going on */ |
| 202 | usb_kill_urb(port->write_urb); |
| 203 | usb_kill_urb(port->read_urb); |
| 204 | } |
| 205 | } |
| 206 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 207 | static int cyberjack_write(struct tty_struct *tty, |
| 208 | struct usb_serial_port *port, const unsigned char *buf, int count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | { |
| 210 | struct usb_serial *serial = port->serial; |
| 211 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
| 212 | unsigned long flags; |
| 213 | int result; |
| 214 | int wrexpected; |
| 215 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 216 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | |
| 218 | if (count == 0) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 219 | dbg("%s - write request of 0 bytes", __func__); |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 220 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | } |
| 222 | |
Peter Zijlstra | e81ee63 | 2006-09-25 12:51:41 +0200 | [diff] [blame] | 223 | spin_lock_bh(&port->lock); |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 224 | if (port->write_urb_busy) { |
Peter Zijlstra | e81ee63 | 2006-09-25 12:51:41 +0200 | [diff] [blame] | 225 | spin_unlock_bh(&port->lock); |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 226 | dbg("%s - already writing", __func__); |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 227 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | } |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 229 | port->write_urb_busy = 1; |
Peter Zijlstra | e81ee63 | 2006-09-25 12:51:41 +0200 | [diff] [blame] | 230 | spin_unlock_bh(&port->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | |
| 232 | spin_lock_irqsave(&priv->lock, flags); |
| 233 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 234 | if (count+priv->wrfilled > sizeof(priv->wrbuf)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | /* To much data for buffer. Reset buffer. */ |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 236 | priv->wrfilled = 0; |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 237 | port->write_urb_busy = 0; |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 238 | spin_unlock_irqrestore(&priv->lock, flags); |
| 239 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | } |
| 241 | |
| 242 | /* Copy data */ |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 243 | memcpy(priv->wrbuf + priv->wrfilled, buf, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 245 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 246 | priv->wrbuf + priv->wrfilled); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | priv->wrfilled += count; |
| 248 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 249 | if (priv->wrfilled >= 3) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | wrexpected = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3; |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 251 | dbg("%s - expected data: %d", __func__, wrexpected); |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 252 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | wrexpected = sizeof(priv->wrbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 255 | if (priv->wrfilled >= wrexpected) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | /* We have enough data to begin transmission */ |
| 257 | int length; |
| 258 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 259 | dbg("%s - transmitting data (frame 1)", __func__); |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 260 | length = (wrexpected > port->bulk_out_size) ? |
| 261 | port->bulk_out_size : wrexpected; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 263 | memcpy(port->write_urb->transfer_buffer, priv->wrbuf, length); |
| 264 | priv->wrsent = length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | |
| 266 | /* set up our urb */ |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 267 | usb_fill_bulk_urb(port->write_urb, serial->dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress), |
| 269 | port->write_urb->transfer_buffer, length, |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 270 | ((serial->type->write_bulk_callback) ? |
| 271 | serial->type->write_bulk_callback : |
| 272 | cyberjack_write_bulk_callback), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | port); |
| 274 | |
| 275 | /* send the data out the bulk port */ |
| 276 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
| 277 | if (result) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 278 | dev_err(&port->dev, |
| 279 | "%s - failed submitting write urb, error %d", |
| 280 | __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | /* Throw away data. No better idea what to do with it. */ |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 282 | priv->wrfilled = 0; |
| 283 | priv->wrsent = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | spin_unlock_irqrestore(&priv->lock, flags); |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 285 | port->write_urb_busy = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | return 0; |
| 287 | } |
| 288 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 289 | dbg("%s - priv->wrsent=%d", __func__, priv->wrsent); |
| 290 | dbg("%s - priv->wrfilled=%d", __func__, priv->wrfilled); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 292 | if (priv->wrsent >= priv->wrfilled) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 293 | dbg("%s - buffer cleaned", __func__); |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 294 | memset(priv->wrbuf, 0, sizeof(priv->wrbuf)); |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 295 | priv->wrfilled = 0; |
| 296 | priv->wrsent = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | } |
| 298 | } |
| 299 | |
| 300 | spin_unlock_irqrestore(&priv->lock, flags); |
| 301 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 302 | return count; |
| 303 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 305 | static int cyberjack_write_room(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | { |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 307 | /* FIXME: .... */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | return CYBERJACK_LOCAL_BUF_SIZE; |
| 309 | } |
| 310 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 311 | static void cyberjack_read_int_callback(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | { |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 313 | struct usb_serial_port *port = urb->context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
| 315 | unsigned char *data = urb->transfer_buffer; |
Greg Kroah-Hartman | 7dcc85c | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 316 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | int result; |
| 318 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 319 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | |
| 321 | /* the urb might have been killed. */ |
Greg Kroah-Hartman | 7dcc85c | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 322 | if (status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | return; |
| 324 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 325 | usb_serial_debug_data(debug, &port->dev, __func__, |
| 326 | urb->actual_length, data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | |
| 328 | /* React only to interrupts signaling a bulk_in transfer */ |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 329 | if (urb->actual_length == 4 && data[0] == 0x01) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | short old_rdtodo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | |
| 332 | /* This is a announcement of coming bulk_ins. */ |
| 333 | unsigned short size = ((unsigned short)data[3]<<8)+data[2]+3; |
| 334 | |
| 335 | spin_lock(&priv->lock); |
| 336 | |
| 337 | old_rdtodo = priv->rdtodo; |
| 338 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 339 | if (old_rdtodo + size < old_rdtodo) { |
| 340 | dbg("To many bulk_in urbs to do."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | spin_unlock(&priv->lock); |
| 342 | goto resubmit; |
| 343 | } |
| 344 | |
| 345 | /* "+=" is probably more fault tollerant than "=" */ |
| 346 | priv->rdtodo += size; |
| 347 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 348 | dbg("%s - rdtodo: %d", __func__, priv->rdtodo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | |
| 350 | spin_unlock(&priv->lock); |
| 351 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 352 | if (!old_rdtodo) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | port->read_urb->dev = port->serial->dev; |
| 354 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 355 | if (result) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 356 | dev_err(&port->dev, "%s - failed resubmitting " |
| 357 | "read urb, error %d\n", |
| 358 | __func__, result); |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 359 | dbg("%s - usb_submit_urb(read urb)", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | } |
| 361 | } |
| 362 | |
| 363 | resubmit: |
| 364 | port->interrupt_in_urb->dev = port->serial->dev; |
| 365 | result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); |
| 366 | if (result) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 367 | dev_err(&port->dev, "usb_submit_urb(read int) failed\n"); |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 368 | dbg("%s - usb_submit_urb(int urb)", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | } |
| 370 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 371 | static void cyberjack_read_bulk_callback(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | { |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 373 | struct usb_serial_port *port = urb->context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
| 375 | struct tty_struct *tty; |
| 376 | unsigned char *data = urb->transfer_buffer; |
| 377 | short todo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | int result; |
Greg Kroah-Hartman | 7dcc85c | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 379 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 381 | dbg("%s - port %d", __func__, port->number); |
Greg Kroah-Hartman | 7dcc85c | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 382 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 383 | usb_serial_debug_data(debug, &port->dev, __func__, |
| 384 | urb->actual_length, data); |
Greg Kroah-Hartman | 7dcc85c | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 385 | if (status) { |
| 386 | dbg("%s - nonzero read bulk status received: %d", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 387 | __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | return; |
| 389 | } |
| 390 | |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 391 | tty = tty_port_tty_get(&port->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | if (!tty) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 393 | dbg("%s - ignoring since device not open\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | return; |
| 395 | } |
| 396 | if (urb->actual_length) { |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 397 | tty_buffer_request_room(tty, urb->actual_length); |
| 398 | tty_insert_flip_string(tty, data, urb->actual_length); |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 399 | tty_flip_buffer_push(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | } |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 401 | tty_kref_put(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | |
| 403 | spin_lock(&priv->lock); |
| 404 | |
| 405 | /* Reduce urbs to do by one. */ |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 406 | priv->rdtodo -= urb->actual_length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | /* Just to be sure */ |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 408 | if (priv->rdtodo < 0) |
| 409 | priv->rdtodo = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | todo = priv->rdtodo; |
| 411 | |
| 412 | spin_unlock(&priv->lock); |
| 413 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 414 | dbg("%s - rdtodo: %d", __func__, todo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | |
| 416 | /* Continue to read if we have still urbs to do. */ |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 417 | if (todo /* || (urb->actual_length==port->bulk_in_endpointAddress)*/) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | port->read_urb->dev = port->serial->dev; |
| 419 | result = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
| 420 | if (result) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 421 | dev_err(&port->dev, "%s - failed resubmitting read " |
| 422 | "urb, error %d\n", __func__, result); |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 423 | dbg("%s - usb_submit_urb(read urb)", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | } |
| 425 | } |
| 426 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 427 | static void cyberjack_write_bulk_callback(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | { |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 429 | struct usb_serial_port *port = urb->context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | struct cyberjack_private *priv = usb_get_serial_port_data(port); |
Greg Kroah-Hartman | 7dcc85c | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 431 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 433 | dbg("%s - port %d", __func__, port->number); |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 434 | |
| 435 | port->write_urb_busy = 0; |
Greg Kroah-Hartman | 7dcc85c | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 436 | if (status) { |
| 437 | dbg("%s - nonzero write bulk status received: %d", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 438 | __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | return; |
| 440 | } |
| 441 | |
| 442 | spin_lock(&priv->lock); |
| 443 | |
| 444 | /* only do something if we have more data to send */ |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 445 | if (priv->wrfilled) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | int length, blksize, result; |
| 447 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 448 | dbg("%s - transmitting data (frame n)", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | |
| 450 | length = ((priv->wrfilled - priv->wrsent) > port->bulk_out_size) ? |
| 451 | port->bulk_out_size : (priv->wrfilled - priv->wrsent); |
| 452 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 453 | memcpy(port->write_urb->transfer_buffer, |
| 454 | priv->wrbuf + priv->wrsent, length); |
| 455 | priv->wrsent += length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | |
| 457 | /* set up our urb */ |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 458 | usb_fill_bulk_urb(port->write_urb, port->serial->dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), |
| 460 | port->write_urb->transfer_buffer, length, |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 461 | ((port->serial->type->write_bulk_callback) ? |
| 462 | port->serial->type->write_bulk_callback : |
| 463 | cyberjack_write_bulk_callback), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | port); |
| 465 | |
| 466 | /* send the data out the bulk port */ |
| 467 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
| 468 | if (result) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 469 | dev_err(&port->dev, |
| 470 | "%s - failed submitting write urb, error %d\n", |
| 471 | __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | /* Throw away data. No better idea what to do with it. */ |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 473 | priv->wrfilled = 0; |
| 474 | priv->wrsent = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | goto exit; |
| 476 | } |
| 477 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 478 | dbg("%s - priv->wrsent=%d", __func__, priv->wrsent); |
| 479 | dbg("%s - priv->wrfilled=%d", __func__, priv->wrfilled); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | |
| 481 | blksize = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3; |
| 482 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 483 | if (priv->wrsent >= priv->wrfilled || |
| 484 | priv->wrsent >= blksize) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 485 | dbg("%s - buffer cleaned", __func__); |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 486 | memset(priv->wrbuf, 0, sizeof(priv->wrbuf)); |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 487 | priv->wrfilled = 0; |
| 488 | priv->wrsent = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | } |
| 490 | } |
| 491 | |
| 492 | exit: |
| 493 | spin_unlock(&priv->lock); |
Pete Zaitcev | cf2c748 | 2006-05-22 21:58:49 -0700 | [diff] [blame] | 494 | usb_serial_port_softint(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | } |
| 496 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 497 | static int __init cyberjack_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | { |
| 499 | int retval; |
| 500 | retval = usb_serial_register(&cyberjack_device); |
| 501 | if (retval) |
| 502 | goto failed_usb_serial_register; |
| 503 | retval = usb_register(&cyberjack_driver); |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 504 | if (retval) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | goto failed_usb_register; |
| 506 | |
Greg Kroah-Hartman | c197a8d | 2008-08-18 13:21:04 -0700 | [diff] [blame] | 507 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION " " |
| 508 | DRIVER_AUTHOR "\n"); |
| 509 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | |
| 511 | return 0; |
| 512 | failed_usb_register: |
| 513 | usb_serial_deregister(&cyberjack_device); |
| 514 | failed_usb_serial_register: |
| 515 | return retval; |
| 516 | } |
| 517 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 518 | static void __exit cyberjack_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | { |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 520 | usb_deregister(&cyberjack_driver); |
| 521 | usb_serial_deregister(&cyberjack_device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | } |
| 523 | |
| 524 | module_init(cyberjack_init); |
| 525 | module_exit(cyberjack_exit); |
| 526 | |
Alan Cox | b9c52f1 | 2008-07-22 11:10:27 +0100 | [diff] [blame] | 527 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 528 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 529 | MODULE_VERSION(DRIVER_VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | MODULE_LICENSE("GPL"); |
| 531 | |
| 532 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
| 533 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |