Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * USB ConnectTech WhiteHEAT driver |
| 3 | * |
| 4 | * Copyright (C) 2002 |
| 5 | * Connect Tech Inc. |
| 6 | * |
| 7 | * Copyright (C) 1999 - 2001 |
| 8 | * Greg Kroah-Hartman (greg@kroah.com) |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * See Documentation/usb/usb-serial.txt for more information on using this driver |
| 16 | * |
| 17 | * (10/09/2002) Stuart MacDonald (stuartm@connecttech.com) |
| 18 | * Upgrade to full working driver |
| 19 | * |
| 20 | * (05/30/2001) gkh |
| 21 | * switched from using spinlock to a semaphore, which fixes lots of problems. |
| 22 | * |
| 23 | * (04/08/2001) gb |
| 24 | * Identify version on module load. |
| 25 | * |
| 26 | * 2001_Mar_19 gkh |
| 27 | * Fixed MOD_INC and MOD_DEC logic, the ability to open a port more |
| 28 | * than once, and the got the proper usb_device_id table entries so |
| 29 | * the driver works again. |
| 30 | * |
| 31 | * (11/01/2000) Adam J. Richter |
| 32 | * usb_device_id table support |
| 33 | * |
| 34 | * (10/05/2000) gkh |
| 35 | * Fixed bug with urb->dev not being set properly, now that the usb |
| 36 | * core needs it. |
| 37 | * |
| 38 | * (10/03/2000) smd |
| 39 | * firmware is improved to guard against crap sent to device |
| 40 | * firmware now replies CMD_FAILURE on bad things |
| 41 | * read_callback fix you provided for private info struct |
| 42 | * command_finished now indicates success or fail |
| 43 | * setup_port struct now packed to avoid gcc padding |
| 44 | * firmware uses 1 based port numbering, driver now handles that |
| 45 | * |
| 46 | * (09/11/2000) gkh |
| 47 | * Removed DEBUG #ifdefs with call to usb_serial_debug_data |
| 48 | * |
| 49 | * (07/19/2000) gkh |
| 50 | * Added module_init and module_exit functions to handle the fact that this |
| 51 | * driver is a loadable module now. |
| 52 | * Fixed bug with port->minor that was found by Al Borchers |
| 53 | * |
| 54 | * (07/04/2000) gkh |
| 55 | * Added support for port settings. Baud rate can now be changed. Line signals |
| 56 | * are not transferred to and from the tty layer yet, but things seem to be |
| 57 | * working well now. |
| 58 | * |
| 59 | * (05/04/2000) gkh |
| 60 | * First cut at open and close commands. Data can flow through the ports at |
| 61 | * default speeds now. |
| 62 | * |
| 63 | * (03/26/2000) gkh |
| 64 | * Split driver up into device specific pieces. |
| 65 | * |
| 66 | */ |
| 67 | |
| 68 | #include <linux/config.h> |
| 69 | #include <linux/kernel.h> |
| 70 | #include <linux/errno.h> |
| 71 | #include <linux/init.h> |
| 72 | #include <linux/slab.h> |
| 73 | #include <linux/tty.h> |
| 74 | #include <linux/tty_driver.h> |
| 75 | #include <linux/tty_flip.h> |
| 76 | #include <linux/module.h> |
| 77 | #include <linux/spinlock.h> |
| 78 | #include <asm/uaccess.h> |
| 79 | #include <asm/termbits.h> |
| 80 | #include <linux/usb.h> |
| 81 | #include <linux/serial_reg.h> |
| 82 | #include <linux/serial.h> |
| 83 | #include "usb-serial.h" |
| 84 | #include "whiteheat_fw.h" /* firmware for the ConnectTech WhiteHEAT device */ |
| 85 | #include "whiteheat.h" /* WhiteHEAT specific commands */ |
| 86 | |
| 87 | static int debug; |
| 88 | |
| 89 | #ifndef CMSPAR |
| 90 | #define CMSPAR 0 |
| 91 | #endif |
| 92 | |
| 93 | /* |
| 94 | * Version Information |
| 95 | */ |
| 96 | #define DRIVER_VERSION "v2.0" |
| 97 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Stuart MacDonald <stuartm@connecttech.com>" |
| 98 | #define DRIVER_DESC "USB ConnectTech WhiteHEAT driver" |
| 99 | |
| 100 | #define CONNECT_TECH_VENDOR_ID 0x0710 |
| 101 | #define CONNECT_TECH_FAKE_WHITE_HEAT_ID 0x0001 |
| 102 | #define CONNECT_TECH_WHITE_HEAT_ID 0x8001 |
| 103 | |
| 104 | /* |
| 105 | ID tables for whiteheat are unusual, because we want to different |
| 106 | things for different versions of the device. Eventually, this |
| 107 | will be doable from a single table. But, for now, we define two |
| 108 | separate ID tables, and then a third table that combines them |
| 109 | just for the purpose of exporting the autoloading information. |
| 110 | */ |
| 111 | static struct usb_device_id id_table_std [] = { |
| 112 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) }, |
| 113 | { } /* Terminating entry */ |
| 114 | }; |
| 115 | |
| 116 | static struct usb_device_id id_table_prerenumeration [] = { |
| 117 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) }, |
| 118 | { } /* Terminating entry */ |
| 119 | }; |
| 120 | |
| 121 | static struct usb_device_id id_table_combined [] = { |
| 122 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) }, |
| 123 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) }, |
| 124 | { } /* Terminating entry */ |
| 125 | }; |
| 126 | |
| 127 | MODULE_DEVICE_TABLE (usb, id_table_combined); |
| 128 | |
| 129 | static struct usb_driver whiteheat_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | .name = "whiteheat", |
| 131 | .probe = usb_serial_probe, |
| 132 | .disconnect = usb_serial_disconnect, |
| 133 | .id_table = id_table_combined, |
Greg Kroah-Hartman | ba9dc65 | 2005-11-16 13:41:28 -0800 | [diff] [blame] | 134 | .no_dynamic_id = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | }; |
| 136 | |
| 137 | /* function prototypes for the Connect Tech WhiteHEAT prerenumeration device */ |
| 138 | static int whiteheat_firmware_download (struct usb_serial *serial, const struct usb_device_id *id); |
| 139 | static int whiteheat_firmware_attach (struct usb_serial *serial); |
| 140 | |
| 141 | /* function prototypes for the Connect Tech WhiteHEAT serial converter */ |
| 142 | static int whiteheat_attach (struct usb_serial *serial); |
| 143 | static void whiteheat_shutdown (struct usb_serial *serial); |
| 144 | static int whiteheat_open (struct usb_serial_port *port, struct file *filp); |
| 145 | static void whiteheat_close (struct usb_serial_port *port, struct file *filp); |
| 146 | static int whiteheat_write (struct usb_serial_port *port, const unsigned char *buf, int count); |
| 147 | static int whiteheat_write_room (struct usb_serial_port *port); |
| 148 | static int whiteheat_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg); |
| 149 | static void whiteheat_set_termios (struct usb_serial_port *port, struct termios * old); |
| 150 | static int whiteheat_tiocmget (struct usb_serial_port *port, struct file *file); |
| 151 | static int whiteheat_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear); |
| 152 | static void whiteheat_break_ctl (struct usb_serial_port *port, int break_state); |
| 153 | static int whiteheat_chars_in_buffer (struct usb_serial_port *port); |
| 154 | static void whiteheat_throttle (struct usb_serial_port *port); |
| 155 | static void whiteheat_unthrottle (struct usb_serial_port *port); |
| 156 | static void whiteheat_read_callback (struct urb *urb, struct pt_regs *regs); |
| 157 | static void whiteheat_write_callback (struct urb *urb, struct pt_regs *regs); |
| 158 | |
Greg Kroah-Hartman | ea65370 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 159 | static struct usb_serial_driver whiteheat_fake_device = { |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 160 | .driver = { |
| 161 | .owner = THIS_MODULE, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 162 | .name = "whiteheatnofirm", |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 163 | }, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 164 | .description = "Connect Tech - WhiteHEAT - (prerenumeration)", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | .id_table = id_table_prerenumeration, |
| 166 | .num_interrupt_in = NUM_DONT_CARE, |
| 167 | .num_bulk_in = NUM_DONT_CARE, |
| 168 | .num_bulk_out = NUM_DONT_CARE, |
| 169 | .num_ports = 1, |
| 170 | .probe = whiteheat_firmware_download, |
| 171 | .attach = whiteheat_firmware_attach, |
| 172 | }; |
| 173 | |
Greg Kroah-Hartman | ea65370 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 174 | static struct usb_serial_driver whiteheat_device = { |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 175 | .driver = { |
| 176 | .owner = THIS_MODULE, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 177 | .name = "whiteheat", |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 178 | }, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 179 | .description = "Connect Tech - WhiteHEAT", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | .id_table = id_table_std, |
| 181 | .num_interrupt_in = NUM_DONT_CARE, |
| 182 | .num_bulk_in = NUM_DONT_CARE, |
| 183 | .num_bulk_out = NUM_DONT_CARE, |
| 184 | .num_ports = 4, |
| 185 | .attach = whiteheat_attach, |
| 186 | .shutdown = whiteheat_shutdown, |
| 187 | .open = whiteheat_open, |
| 188 | .close = whiteheat_close, |
| 189 | .write = whiteheat_write, |
| 190 | .write_room = whiteheat_write_room, |
| 191 | .ioctl = whiteheat_ioctl, |
| 192 | .set_termios = whiteheat_set_termios, |
| 193 | .break_ctl = whiteheat_break_ctl, |
| 194 | .tiocmget = whiteheat_tiocmget, |
| 195 | .tiocmset = whiteheat_tiocmset, |
| 196 | .chars_in_buffer = whiteheat_chars_in_buffer, |
| 197 | .throttle = whiteheat_throttle, |
| 198 | .unthrottle = whiteheat_unthrottle, |
| 199 | .read_bulk_callback = whiteheat_read_callback, |
| 200 | .write_bulk_callback = whiteheat_write_callback, |
| 201 | }; |
| 202 | |
| 203 | |
| 204 | struct whiteheat_command_private { |
| 205 | spinlock_t lock; |
| 206 | __u8 port_running; |
| 207 | __u8 command_finished; |
| 208 | wait_queue_head_t wait_command; /* for handling sleeping while waiting for a command to finish */ |
| 209 | __u8 result_buffer[64]; |
| 210 | }; |
| 211 | |
| 212 | |
| 213 | #define THROTTLED 0x01 |
| 214 | #define ACTUALLY_THROTTLED 0x02 |
| 215 | |
| 216 | static int urb_pool_size = 8; |
| 217 | |
| 218 | struct whiteheat_urb_wrap { |
| 219 | struct list_head list; |
| 220 | struct urb *urb; |
| 221 | }; |
| 222 | |
| 223 | struct whiteheat_private { |
| 224 | spinlock_t lock; |
| 225 | __u8 flags; |
| 226 | __u8 mcr; |
| 227 | struct list_head rx_urbs_free; |
| 228 | struct list_head rx_urbs_submitted; |
| 229 | struct list_head rx_urb_q; |
| 230 | struct work_struct rx_work; |
| 231 | struct list_head tx_urbs_free; |
| 232 | struct list_head tx_urbs_submitted; |
| 233 | }; |
| 234 | |
| 235 | |
| 236 | /* local function prototypes */ |
| 237 | static int start_command_port(struct usb_serial *serial); |
| 238 | static void stop_command_port(struct usb_serial *serial); |
| 239 | static void command_port_write_callback(struct urb *urb, struct pt_regs *regs); |
| 240 | static void command_port_read_callback(struct urb *urb, struct pt_regs *regs); |
| 241 | |
| 242 | static int start_port_read(struct usb_serial_port *port); |
| 243 | static struct whiteheat_urb_wrap *urb_to_wrap(struct urb *urb, struct list_head *head); |
| 244 | static struct list_head *list_first(struct list_head *head); |
| 245 | static void rx_data_softint(void *private); |
| 246 | |
| 247 | static int firm_send_command(struct usb_serial_port *port, __u8 command, __u8 *data, __u8 datasize); |
| 248 | static int firm_open(struct usb_serial_port *port); |
| 249 | static int firm_close(struct usb_serial_port *port); |
| 250 | static int firm_setup_port(struct usb_serial_port *port); |
| 251 | static int firm_set_rts(struct usb_serial_port *port, __u8 onoff); |
| 252 | static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff); |
| 253 | static int firm_set_break(struct usb_serial_port *port, __u8 onoff); |
| 254 | static int firm_purge(struct usb_serial_port *port, __u8 rxtx); |
| 255 | static int firm_get_dtr_rts(struct usb_serial_port *port); |
| 256 | static int firm_report_tx_done(struct usb_serial_port *port); |
| 257 | |
| 258 | |
| 259 | #define COMMAND_PORT 4 |
| 260 | #define COMMAND_TIMEOUT (2*HZ) /* 2 second timeout for a command */ |
| 261 | #define COMMAND_TIMEOUT_MS 2000 |
| 262 | #define CLOSING_DELAY (30 * HZ) |
| 263 | |
| 264 | |
| 265 | /***************************************************************************** |
| 266 | * Connect Tech's White Heat prerenumeration driver functions |
| 267 | *****************************************************************************/ |
| 268 | |
| 269 | /* steps to download the firmware to the WhiteHEAT device: |
| 270 | - hold the reset (by writing to the reset bit of the CPUCS register) |
| 271 | - download the VEND_AX.HEX file to the chip using VENDOR_REQUEST-ANCHOR_LOAD |
| 272 | - release the reset (by writing to the CPUCS register) |
| 273 | - download the WH.HEX file for all addresses greater than 0x1b3f using |
| 274 | VENDOR_REQUEST-ANCHOR_EXTERNAL_RAM_LOAD |
| 275 | - hold the reset |
| 276 | - download the WH.HEX file for all addresses less than 0x1b40 using |
| 277 | VENDOR_REQUEST_ANCHOR_LOAD |
| 278 | - release the reset |
| 279 | - device renumerated itself and comes up as new device id with all |
| 280 | firmware download completed. |
| 281 | */ |
| 282 | static int whiteheat_firmware_download (struct usb_serial *serial, const struct usb_device_id *id) |
| 283 | { |
| 284 | int response; |
| 285 | const struct whiteheat_hex_record *record; |
| 286 | |
| 287 | dbg("%s", __FUNCTION__); |
| 288 | |
| 289 | response = ezusb_set_reset (serial, 1); |
| 290 | |
| 291 | record = &whiteheat_loader[0]; |
| 292 | while (record->address != 0xffff) { |
| 293 | response = ezusb_writememory (serial, record->address, |
| 294 | (unsigned char *)record->data, record->data_size, 0xa0); |
| 295 | if (response < 0) { |
| 296 | err("%s - ezusb_writememory failed for loader (%d %04X %p %d)", |
| 297 | __FUNCTION__, response, record->address, record->data, record->data_size); |
| 298 | break; |
| 299 | } |
| 300 | ++record; |
| 301 | } |
| 302 | |
| 303 | response = ezusb_set_reset (serial, 0); |
| 304 | |
| 305 | record = &whiteheat_firmware[0]; |
| 306 | while (record->address < 0x1b40) { |
| 307 | ++record; |
| 308 | } |
| 309 | while (record->address != 0xffff) { |
| 310 | response = ezusb_writememory (serial, record->address, |
| 311 | (unsigned char *)record->data, record->data_size, 0xa3); |
| 312 | if (response < 0) { |
| 313 | err("%s - ezusb_writememory failed for first firmware step (%d %04X %p %d)", |
| 314 | __FUNCTION__, response, record->address, record->data, record->data_size); |
| 315 | break; |
| 316 | } |
| 317 | ++record; |
| 318 | } |
| 319 | |
| 320 | response = ezusb_set_reset (serial, 1); |
| 321 | |
| 322 | record = &whiteheat_firmware[0]; |
| 323 | while (record->address < 0x1b40) { |
| 324 | response = ezusb_writememory (serial, record->address, |
| 325 | (unsigned char *)record->data, record->data_size, 0xa0); |
| 326 | if (response < 0) { |
| 327 | err("%s - ezusb_writememory failed for second firmware step (%d %04X %p %d)", |
| 328 | __FUNCTION__, response, record->address, record->data, record->data_size); |
| 329 | break; |
| 330 | } |
| 331 | ++record; |
| 332 | } |
| 333 | |
| 334 | response = ezusb_set_reset (serial, 0); |
| 335 | |
| 336 | return 0; |
| 337 | } |
| 338 | |
| 339 | |
| 340 | static int whiteheat_firmware_attach (struct usb_serial *serial) |
| 341 | { |
| 342 | /* We want this device to fail to have a driver assigned to it */ |
| 343 | return 1; |
| 344 | } |
| 345 | |
| 346 | |
| 347 | /***************************************************************************** |
| 348 | * Connect Tech's White Heat serial driver functions |
| 349 | *****************************************************************************/ |
| 350 | static int whiteheat_attach (struct usb_serial *serial) |
| 351 | { |
| 352 | struct usb_serial_port *command_port; |
| 353 | struct whiteheat_command_private *command_info; |
| 354 | struct usb_serial_port *port; |
| 355 | struct whiteheat_private *info; |
| 356 | struct whiteheat_hw_info *hw_info; |
| 357 | int pipe; |
| 358 | int ret; |
| 359 | int alen; |
| 360 | __u8 *command; |
| 361 | __u8 *result; |
| 362 | int i; |
| 363 | int j; |
| 364 | struct urb *urb; |
| 365 | int buf_size; |
| 366 | struct whiteheat_urb_wrap *wrap; |
| 367 | struct list_head *tmp; |
| 368 | |
| 369 | command_port = serial->port[COMMAND_PORT]; |
| 370 | |
| 371 | pipe = usb_sndbulkpipe (serial->dev, command_port->bulk_out_endpointAddress); |
| 372 | command = kmalloc(2, GFP_KERNEL); |
| 373 | if (!command) |
| 374 | goto no_command_buffer; |
| 375 | command[0] = WHITEHEAT_GET_HW_INFO; |
| 376 | command[1] = 0; |
| 377 | |
| 378 | result = kmalloc(sizeof(*hw_info) + 1, GFP_KERNEL); |
| 379 | if (!result) |
| 380 | goto no_result_buffer; |
| 381 | /* |
| 382 | * When the module is reloaded the firmware is still there and |
| 383 | * the endpoints are still in the usb core unchanged. This is the |
| 384 | * unlinking bug in disguise. Same for the call below. |
| 385 | */ |
| 386 | usb_clear_halt(serial->dev, pipe); |
| 387 | ret = usb_bulk_msg (serial->dev, pipe, command, 2, &alen, COMMAND_TIMEOUT_MS); |
| 388 | if (ret) { |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 389 | err("%s: Couldn't send command [%d]", serial->type->description, ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | goto no_firmware; |
| 391 | } else if (alen != sizeof(command)) { |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 392 | err("%s: Send command incomplete [%d]", serial->type->description, alen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | goto no_firmware; |
| 394 | } |
| 395 | |
| 396 | pipe = usb_rcvbulkpipe (serial->dev, command_port->bulk_in_endpointAddress); |
| 397 | /* See the comment on the usb_clear_halt() above */ |
| 398 | usb_clear_halt(serial->dev, pipe); |
| 399 | ret = usb_bulk_msg (serial->dev, pipe, result, sizeof(*hw_info) + 1, &alen, COMMAND_TIMEOUT_MS); |
| 400 | if (ret) { |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 401 | err("%s: Couldn't get results [%d]", serial->type->description, ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | goto no_firmware; |
| 403 | } else if (alen != sizeof(result)) { |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 404 | err("%s: Get results incomplete [%d]", serial->type->description, alen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | goto no_firmware; |
| 406 | } else if (result[0] != command[0]) { |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 407 | err("%s: Command failed [%d]", serial->type->description, result[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | goto no_firmware; |
| 409 | } |
| 410 | |
| 411 | hw_info = (struct whiteheat_hw_info *)&result[1]; |
| 412 | |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 413 | info("%s: Driver %s: Firmware v%d.%02d", serial->type->description, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | DRIVER_VERSION, hw_info->sw_major_rev, hw_info->sw_minor_rev); |
| 415 | |
| 416 | for (i = 0; i < serial->num_ports; i++) { |
| 417 | port = serial->port[i]; |
| 418 | |
| 419 | info = (struct whiteheat_private *)kmalloc(sizeof(struct whiteheat_private), GFP_KERNEL); |
| 420 | if (info == NULL) { |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 421 | err("%s: Out of memory for port structures\n", serial->type->description); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | goto no_private; |
| 423 | } |
| 424 | |
| 425 | spin_lock_init(&info->lock); |
| 426 | info->flags = 0; |
| 427 | info->mcr = 0; |
| 428 | INIT_WORK(&info->rx_work, rx_data_softint, port); |
| 429 | |
| 430 | INIT_LIST_HEAD(&info->rx_urbs_free); |
| 431 | INIT_LIST_HEAD(&info->rx_urbs_submitted); |
| 432 | INIT_LIST_HEAD(&info->rx_urb_q); |
| 433 | INIT_LIST_HEAD(&info->tx_urbs_free); |
| 434 | INIT_LIST_HEAD(&info->tx_urbs_submitted); |
| 435 | |
| 436 | for (j = 0; j < urb_pool_size; j++) { |
| 437 | urb = usb_alloc_urb(0, GFP_KERNEL); |
| 438 | if (!urb) { |
| 439 | err("No free urbs available"); |
| 440 | goto no_rx_urb; |
| 441 | } |
| 442 | buf_size = port->read_urb->transfer_buffer_length; |
| 443 | urb->transfer_buffer = kmalloc(buf_size, GFP_KERNEL); |
| 444 | if (!urb->transfer_buffer) { |
| 445 | err("Couldn't allocate urb buffer"); |
| 446 | goto no_rx_buf; |
| 447 | } |
| 448 | wrap = kmalloc(sizeof(*wrap), GFP_KERNEL); |
| 449 | if (!wrap) { |
| 450 | err("Couldn't allocate urb wrapper"); |
| 451 | goto no_rx_wrap; |
| 452 | } |
| 453 | usb_fill_bulk_urb(urb, serial->dev, |
| 454 | usb_rcvbulkpipe(serial->dev, |
| 455 | port->bulk_in_endpointAddress), |
| 456 | urb->transfer_buffer, buf_size, |
| 457 | whiteheat_read_callback, port); |
| 458 | wrap->urb = urb; |
| 459 | list_add(&wrap->list, &info->rx_urbs_free); |
| 460 | |
| 461 | urb = usb_alloc_urb(0, GFP_KERNEL); |
| 462 | if (!urb) { |
| 463 | err("No free urbs available"); |
| 464 | goto no_tx_urb; |
| 465 | } |
| 466 | buf_size = port->write_urb->transfer_buffer_length; |
| 467 | urb->transfer_buffer = kmalloc(buf_size, GFP_KERNEL); |
| 468 | if (!urb->transfer_buffer) { |
| 469 | err("Couldn't allocate urb buffer"); |
| 470 | goto no_tx_buf; |
| 471 | } |
| 472 | wrap = kmalloc(sizeof(*wrap), GFP_KERNEL); |
| 473 | if (!wrap) { |
| 474 | err("Couldn't allocate urb wrapper"); |
| 475 | goto no_tx_wrap; |
| 476 | } |
| 477 | usb_fill_bulk_urb(urb, serial->dev, |
| 478 | usb_sndbulkpipe(serial->dev, |
| 479 | port->bulk_out_endpointAddress), |
| 480 | urb->transfer_buffer, buf_size, |
| 481 | whiteheat_write_callback, port); |
| 482 | wrap->urb = urb; |
| 483 | list_add(&wrap->list, &info->tx_urbs_free); |
| 484 | } |
| 485 | |
| 486 | usb_set_serial_port_data(port, info); |
| 487 | } |
| 488 | |
| 489 | command_info = (struct whiteheat_command_private *)kmalloc(sizeof(struct whiteheat_command_private), GFP_KERNEL); |
| 490 | if (command_info == NULL) { |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 491 | err("%s: Out of memory for port structures\n", serial->type->description); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | goto no_command_private; |
| 493 | } |
| 494 | |
| 495 | spin_lock_init(&command_info->lock); |
| 496 | command_info->port_running = 0; |
| 497 | init_waitqueue_head(&command_info->wait_command); |
| 498 | usb_set_serial_port_data(command_port, command_info); |
| 499 | command_port->write_urb->complete = command_port_write_callback; |
| 500 | command_port->read_urb->complete = command_port_read_callback; |
| 501 | kfree(result); |
| 502 | kfree(command); |
| 503 | |
| 504 | return 0; |
| 505 | |
| 506 | no_firmware: |
| 507 | /* Firmware likely not running */ |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 508 | err("%s: Unable to retrieve firmware version, try replugging\n", serial->type->description); |
| 509 | err("%s: If the firmware is not running (status led not blinking)\n", serial->type->description); |
| 510 | err("%s: please contact support@connecttech.com\n", serial->type->description); |
Jesper Juhl | 67ca028 | 2006-04-23 19:59:23 +0200 | [diff] [blame] | 511 | kfree(result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | return -ENODEV; |
| 513 | |
| 514 | no_command_private: |
| 515 | for (i = serial->num_ports - 1; i >= 0; i--) { |
| 516 | port = serial->port[i]; |
| 517 | info = usb_get_serial_port_data(port); |
| 518 | for (j = urb_pool_size - 1; j >= 0; j--) { |
| 519 | tmp = list_first(&info->tx_urbs_free); |
| 520 | list_del(tmp); |
| 521 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); |
| 522 | urb = wrap->urb; |
| 523 | kfree(wrap); |
| 524 | no_tx_wrap: |
| 525 | kfree(urb->transfer_buffer); |
| 526 | no_tx_buf: |
| 527 | usb_free_urb(urb); |
| 528 | no_tx_urb: |
| 529 | tmp = list_first(&info->rx_urbs_free); |
| 530 | list_del(tmp); |
| 531 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); |
| 532 | urb = wrap->urb; |
| 533 | kfree(wrap); |
| 534 | no_rx_wrap: |
| 535 | kfree(urb->transfer_buffer); |
| 536 | no_rx_buf: |
| 537 | usb_free_urb(urb); |
| 538 | no_rx_urb: |
| 539 | ; |
| 540 | } |
| 541 | kfree(info); |
| 542 | no_private: |
| 543 | ; |
| 544 | } |
| 545 | kfree(result); |
| 546 | no_result_buffer: |
| 547 | kfree(command); |
| 548 | no_command_buffer: |
| 549 | return -ENOMEM; |
| 550 | } |
| 551 | |
| 552 | |
| 553 | static void whiteheat_shutdown (struct usb_serial *serial) |
| 554 | { |
| 555 | struct usb_serial_port *command_port; |
| 556 | struct usb_serial_port *port; |
| 557 | struct whiteheat_private *info; |
| 558 | struct whiteheat_urb_wrap *wrap; |
| 559 | struct urb *urb; |
| 560 | struct list_head *tmp; |
| 561 | struct list_head *tmp2; |
| 562 | int i; |
| 563 | |
| 564 | dbg("%s", __FUNCTION__); |
| 565 | |
| 566 | /* free up our private data for our command port */ |
| 567 | command_port = serial->port[COMMAND_PORT]; |
| 568 | kfree (usb_get_serial_port_data(command_port)); |
| 569 | |
| 570 | for (i = 0; i < serial->num_ports; i++) { |
| 571 | port = serial->port[i]; |
| 572 | info = usb_get_serial_port_data(port); |
| 573 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_free) { |
| 574 | list_del(tmp); |
| 575 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); |
| 576 | urb = wrap->urb; |
| 577 | kfree(wrap); |
| 578 | kfree(urb->transfer_buffer); |
| 579 | usb_free_urb(urb); |
| 580 | } |
| 581 | list_for_each_safe(tmp, tmp2, &info->tx_urbs_free) { |
| 582 | list_del(tmp); |
| 583 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); |
| 584 | urb = wrap->urb; |
| 585 | kfree(wrap); |
| 586 | kfree(urb->transfer_buffer); |
| 587 | usb_free_urb(urb); |
| 588 | } |
| 589 | kfree(info); |
| 590 | } |
| 591 | |
| 592 | return; |
| 593 | } |
| 594 | |
| 595 | |
| 596 | static int whiteheat_open (struct usb_serial_port *port, struct file *filp) |
| 597 | { |
| 598 | int retval = 0; |
| 599 | struct termios old_term; |
| 600 | |
| 601 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 602 | |
| 603 | retval = start_command_port(port->serial); |
| 604 | if (retval) |
| 605 | goto exit; |
| 606 | |
| 607 | if (port->tty) |
| 608 | port->tty->low_latency = 1; |
| 609 | |
| 610 | /* send an open port command */ |
| 611 | retval = firm_open(port); |
| 612 | if (retval) { |
| 613 | stop_command_port(port->serial); |
| 614 | goto exit; |
| 615 | } |
| 616 | |
| 617 | retval = firm_purge(port, WHITEHEAT_PURGE_RX | WHITEHEAT_PURGE_TX); |
| 618 | if (retval) { |
| 619 | firm_close(port); |
| 620 | stop_command_port(port->serial); |
| 621 | goto exit; |
| 622 | } |
| 623 | |
| 624 | old_term.c_cflag = ~port->tty->termios->c_cflag; |
| 625 | old_term.c_iflag = ~port->tty->termios->c_iflag; |
| 626 | whiteheat_set_termios(port, &old_term); |
| 627 | |
| 628 | /* Work around HCD bugs */ |
| 629 | usb_clear_halt(port->serial->dev, port->read_urb->pipe); |
| 630 | usb_clear_halt(port->serial->dev, port->write_urb->pipe); |
| 631 | |
| 632 | /* Start reading from the device */ |
| 633 | retval = start_port_read(port); |
| 634 | if (retval) { |
| 635 | err("%s - failed submitting read urb, error %d", __FUNCTION__, retval); |
| 636 | firm_close(port); |
| 637 | stop_command_port(port->serial); |
| 638 | goto exit; |
| 639 | } |
| 640 | |
| 641 | exit: |
| 642 | dbg("%s - exit, retval = %d", __FUNCTION__, retval); |
| 643 | return retval; |
| 644 | } |
| 645 | |
| 646 | |
| 647 | static void whiteheat_close(struct usb_serial_port *port, struct file * filp) |
| 648 | { |
| 649 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
| 650 | struct whiteheat_urb_wrap *wrap; |
| 651 | struct urb *urb; |
| 652 | struct list_head *tmp; |
| 653 | struct list_head *tmp2; |
| 654 | unsigned long flags; |
| 655 | |
| 656 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 657 | |
| 658 | /* filp is NULL when called from usb_serial_disconnect */ |
| 659 | if (filp && (tty_hung_up_p(filp))) { |
| 660 | return; |
| 661 | } |
| 662 | |
| 663 | port->tty->closing = 1; |
| 664 | |
| 665 | /* |
| 666 | * Not currently in use; tty_wait_until_sent() calls |
| 667 | * serial_chars_in_buffer() which deadlocks on the second semaphore |
| 668 | * acquisition. This should be fixed at some point. Greg's been |
| 669 | * notified. |
| 670 | if ((filp->f_flags & (O_NDELAY | O_NONBLOCK)) == 0) { |
| 671 | tty_wait_until_sent(port->tty, CLOSING_DELAY); |
| 672 | } |
| 673 | */ |
| 674 | |
| 675 | if (port->tty->driver->flush_buffer) |
| 676 | port->tty->driver->flush_buffer(port->tty); |
| 677 | tty_ldisc_flush(port->tty); |
| 678 | |
| 679 | firm_report_tx_done(port); |
| 680 | |
| 681 | firm_close(port); |
| 682 | |
| 683 | /* shutdown our bulk reads and writes */ |
| 684 | spin_lock_irqsave(&info->lock, flags); |
| 685 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_submitted) { |
| 686 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); |
| 687 | urb = wrap->urb; |
| 688 | usb_kill_urb(urb); |
| 689 | list_del(tmp); |
| 690 | list_add(tmp, &info->rx_urbs_free); |
| 691 | } |
| 692 | list_for_each_safe(tmp, tmp2, &info->rx_urb_q) { |
| 693 | list_del(tmp); |
| 694 | list_add(tmp, &info->rx_urbs_free); |
| 695 | } |
| 696 | list_for_each_safe(tmp, tmp2, &info->tx_urbs_submitted) { |
| 697 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); |
| 698 | urb = wrap->urb; |
| 699 | usb_kill_urb(urb); |
| 700 | list_del(tmp); |
| 701 | list_add(tmp, &info->tx_urbs_free); |
| 702 | } |
| 703 | spin_unlock_irqrestore(&info->lock, flags); |
| 704 | |
| 705 | stop_command_port(port->serial); |
| 706 | |
| 707 | port->tty->closing = 0; |
| 708 | } |
| 709 | |
| 710 | |
| 711 | static int whiteheat_write(struct usb_serial_port *port, const unsigned char *buf, int count) |
| 712 | { |
| 713 | struct usb_serial *serial = port->serial; |
| 714 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
| 715 | struct whiteheat_urb_wrap *wrap; |
| 716 | struct urb *urb; |
| 717 | int result; |
| 718 | int bytes; |
| 719 | int sent = 0; |
| 720 | unsigned long flags; |
| 721 | struct list_head *tmp; |
| 722 | |
| 723 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 724 | |
| 725 | if (count == 0) { |
| 726 | dbg("%s - write request of 0 bytes", __FUNCTION__); |
| 727 | return (0); |
| 728 | } |
| 729 | |
| 730 | while (count) { |
| 731 | spin_lock_irqsave(&info->lock, flags); |
| 732 | if (list_empty(&info->tx_urbs_free)) { |
| 733 | spin_unlock_irqrestore(&info->lock, flags); |
| 734 | break; |
| 735 | } |
| 736 | tmp = list_first(&info->tx_urbs_free); |
| 737 | list_del(tmp); |
| 738 | spin_unlock_irqrestore(&info->lock, flags); |
| 739 | |
| 740 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); |
| 741 | urb = wrap->urb; |
| 742 | bytes = (count > port->bulk_out_size) ? port->bulk_out_size : count; |
| 743 | memcpy (urb->transfer_buffer, buf + sent, bytes); |
| 744 | |
| 745 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, bytes, urb->transfer_buffer); |
| 746 | |
| 747 | urb->dev = serial->dev; |
| 748 | urb->transfer_buffer_length = bytes; |
| 749 | result = usb_submit_urb(urb, GFP_ATOMIC); |
| 750 | if (result) { |
| 751 | err("%s - failed submitting write urb, error %d", __FUNCTION__, result); |
| 752 | sent = result; |
| 753 | spin_lock_irqsave(&info->lock, flags); |
| 754 | list_add(tmp, &info->tx_urbs_free); |
| 755 | spin_unlock_irqrestore(&info->lock, flags); |
| 756 | break; |
| 757 | } else { |
| 758 | sent += bytes; |
| 759 | count -= bytes; |
| 760 | spin_lock_irqsave(&info->lock, flags); |
| 761 | list_add(tmp, &info->tx_urbs_submitted); |
| 762 | spin_unlock_irqrestore(&info->lock, flags); |
| 763 | } |
| 764 | } |
| 765 | |
| 766 | return sent; |
| 767 | } |
| 768 | |
| 769 | |
| 770 | static int whiteheat_write_room(struct usb_serial_port *port) |
| 771 | { |
| 772 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
| 773 | struct list_head *tmp; |
| 774 | int room = 0; |
| 775 | unsigned long flags; |
| 776 | |
| 777 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 778 | |
| 779 | spin_lock_irqsave(&info->lock, flags); |
| 780 | list_for_each(tmp, &info->tx_urbs_free) |
| 781 | room++; |
| 782 | spin_unlock_irqrestore(&info->lock, flags); |
| 783 | room *= port->bulk_out_size; |
| 784 | |
| 785 | dbg("%s - returns %d", __FUNCTION__, room); |
| 786 | return (room); |
| 787 | } |
| 788 | |
| 789 | |
| 790 | static int whiteheat_tiocmget (struct usb_serial_port *port, struct file *file) |
| 791 | { |
| 792 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
| 793 | unsigned int modem_signals = 0; |
| 794 | |
| 795 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 796 | |
| 797 | firm_get_dtr_rts(port); |
| 798 | if (info->mcr & UART_MCR_DTR) |
| 799 | modem_signals |= TIOCM_DTR; |
| 800 | if (info->mcr & UART_MCR_RTS) |
| 801 | modem_signals |= TIOCM_RTS; |
| 802 | |
| 803 | return modem_signals; |
| 804 | } |
| 805 | |
| 806 | |
| 807 | static int whiteheat_tiocmset (struct usb_serial_port *port, struct file *file, |
| 808 | unsigned int set, unsigned int clear) |
| 809 | { |
| 810 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
| 811 | |
| 812 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 813 | |
| 814 | if (set & TIOCM_RTS) |
| 815 | info->mcr |= UART_MCR_RTS; |
| 816 | if (set & TIOCM_DTR) |
| 817 | info->mcr |= UART_MCR_DTR; |
| 818 | |
| 819 | if (clear & TIOCM_RTS) |
| 820 | info->mcr &= ~UART_MCR_RTS; |
| 821 | if (clear & TIOCM_DTR) |
| 822 | info->mcr &= ~UART_MCR_DTR; |
| 823 | |
| 824 | firm_set_dtr(port, info->mcr & UART_MCR_DTR); |
| 825 | firm_set_rts(port, info->mcr & UART_MCR_RTS); |
| 826 | return 0; |
| 827 | } |
| 828 | |
| 829 | |
| 830 | static int whiteheat_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) |
| 831 | { |
| 832 | struct serial_struct serstruct; |
| 833 | void __user *user_arg = (void __user *)arg; |
| 834 | |
| 835 | dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd); |
| 836 | |
| 837 | switch (cmd) { |
| 838 | case TIOCGSERIAL: |
| 839 | memset(&serstruct, 0, sizeof(serstruct)); |
| 840 | serstruct.type = PORT_16654; |
| 841 | serstruct.line = port->serial->minor; |
| 842 | serstruct.port = port->number; |
| 843 | serstruct.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; |
| 844 | serstruct.xmit_fifo_size = port->bulk_out_size; |
| 845 | serstruct.custom_divisor = 0; |
| 846 | serstruct.baud_base = 460800; |
| 847 | serstruct.close_delay = CLOSING_DELAY; |
| 848 | serstruct.closing_wait = CLOSING_DELAY; |
| 849 | |
| 850 | if (copy_to_user(user_arg, &serstruct, sizeof(serstruct))) |
| 851 | return -EFAULT; |
| 852 | |
| 853 | break; |
| 854 | |
| 855 | case TIOCSSERIAL: |
| 856 | if (copy_from_user(&serstruct, user_arg, sizeof(serstruct))) |
| 857 | return -EFAULT; |
| 858 | |
| 859 | /* |
| 860 | * For now this is ignored. dip sets the ASYNC_[V]HI flags |
| 861 | * but this isn't used by us at all. Maybe someone somewhere |
| 862 | * will need the custom_divisor setting. |
| 863 | */ |
| 864 | |
| 865 | break; |
| 866 | |
| 867 | default: |
| 868 | break; |
| 869 | } |
| 870 | |
| 871 | return -ENOIOCTLCMD; |
| 872 | } |
| 873 | |
| 874 | |
| 875 | static void whiteheat_set_termios (struct usb_serial_port *port, struct termios *old_termios) |
| 876 | { |
| 877 | dbg("%s -port %d", __FUNCTION__, port->number); |
| 878 | |
| 879 | if ((!port->tty) || (!port->tty->termios)) { |
| 880 | dbg("%s - no tty structures", __FUNCTION__); |
| 881 | goto exit; |
| 882 | } |
| 883 | |
| 884 | /* check that they really want us to change something */ |
| 885 | if (old_termios) { |
| 886 | if ((port->tty->termios->c_cflag == old_termios->c_cflag) && |
| 887 | (port->tty->termios->c_iflag == old_termios->c_iflag)) { |
| 888 | dbg("%s - nothing to change...", __FUNCTION__); |
| 889 | goto exit; |
| 890 | } |
| 891 | } |
| 892 | |
| 893 | firm_setup_port(port); |
| 894 | |
| 895 | exit: |
| 896 | return; |
| 897 | } |
| 898 | |
| 899 | |
| 900 | static void whiteheat_break_ctl(struct usb_serial_port *port, int break_state) { |
| 901 | firm_set_break(port, break_state); |
| 902 | } |
| 903 | |
| 904 | |
| 905 | static int whiteheat_chars_in_buffer(struct usb_serial_port *port) |
| 906 | { |
| 907 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
| 908 | struct list_head *tmp; |
| 909 | struct whiteheat_urb_wrap *wrap; |
| 910 | int chars = 0; |
| 911 | unsigned long flags; |
| 912 | |
| 913 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 914 | |
| 915 | spin_lock_irqsave(&info->lock, flags); |
| 916 | list_for_each(tmp, &info->tx_urbs_submitted) { |
| 917 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); |
| 918 | chars += wrap->urb->transfer_buffer_length; |
| 919 | } |
| 920 | spin_unlock_irqrestore(&info->lock, flags); |
| 921 | |
| 922 | dbg ("%s - returns %d", __FUNCTION__, chars); |
| 923 | return (chars); |
| 924 | } |
| 925 | |
| 926 | |
| 927 | static void whiteheat_throttle (struct usb_serial_port *port) |
| 928 | { |
| 929 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
| 930 | unsigned long flags; |
| 931 | |
| 932 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 933 | |
| 934 | spin_lock_irqsave(&info->lock, flags); |
| 935 | info->flags |= THROTTLED; |
| 936 | spin_unlock_irqrestore(&info->lock, flags); |
| 937 | |
| 938 | return; |
| 939 | } |
| 940 | |
| 941 | |
| 942 | static void whiteheat_unthrottle (struct usb_serial_port *port) |
| 943 | { |
| 944 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
| 945 | int actually_throttled; |
| 946 | unsigned long flags; |
| 947 | |
| 948 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 949 | |
| 950 | spin_lock_irqsave(&info->lock, flags); |
| 951 | actually_throttled = info->flags & ACTUALLY_THROTTLED; |
| 952 | info->flags &= ~(THROTTLED | ACTUALLY_THROTTLED); |
| 953 | spin_unlock_irqrestore(&info->lock, flags); |
| 954 | |
| 955 | if (actually_throttled) |
| 956 | rx_data_softint(port); |
| 957 | |
| 958 | return; |
| 959 | } |
| 960 | |
| 961 | |
| 962 | /***************************************************************************** |
| 963 | * Connect Tech's White Heat callback routines |
| 964 | *****************************************************************************/ |
| 965 | static void command_port_write_callback (struct urb *urb, struct pt_regs *regs) |
| 966 | { |
| 967 | dbg("%s", __FUNCTION__); |
| 968 | |
| 969 | if (urb->status) { |
| 970 | dbg ("nonzero urb status: %d", urb->status); |
| 971 | return; |
| 972 | } |
| 973 | } |
| 974 | |
| 975 | |
| 976 | static void command_port_read_callback (struct urb *urb, struct pt_regs *regs) |
| 977 | { |
| 978 | struct usb_serial_port *command_port = (struct usb_serial_port *)urb->context; |
| 979 | struct whiteheat_command_private *command_info; |
| 980 | unsigned char *data = urb->transfer_buffer; |
| 981 | int result; |
| 982 | unsigned long flags; |
| 983 | |
| 984 | dbg("%s", __FUNCTION__); |
| 985 | |
| 986 | if (urb->status) { |
| 987 | dbg("%s - nonzero urb status: %d", __FUNCTION__, urb->status); |
| 988 | return; |
| 989 | } |
| 990 | |
| 991 | usb_serial_debug_data(debug, &command_port->dev, __FUNCTION__, urb->actual_length, data); |
| 992 | |
| 993 | command_info = usb_get_serial_port_data(command_port); |
| 994 | if (!command_info) { |
| 995 | dbg ("%s - command_info is NULL, exiting.", __FUNCTION__); |
| 996 | return; |
| 997 | } |
| 998 | spin_lock_irqsave(&command_info->lock, flags); |
| 999 | |
| 1000 | if (data[0] == WHITEHEAT_CMD_COMPLETE) { |
| 1001 | command_info->command_finished = WHITEHEAT_CMD_COMPLETE; |
| 1002 | wake_up_interruptible(&command_info->wait_command); |
| 1003 | } else if (data[0] == WHITEHEAT_CMD_FAILURE) { |
| 1004 | command_info->command_finished = WHITEHEAT_CMD_FAILURE; |
| 1005 | wake_up_interruptible(&command_info->wait_command); |
| 1006 | } else if (data[0] == WHITEHEAT_EVENT) { |
| 1007 | /* These are unsolicited reports from the firmware, hence no waiting command to wakeup */ |
| 1008 | dbg("%s - event received", __FUNCTION__); |
| 1009 | } else if (data[0] == WHITEHEAT_GET_DTR_RTS) { |
| 1010 | memcpy(command_info->result_buffer, &data[1], urb->actual_length - 1); |
| 1011 | command_info->command_finished = WHITEHEAT_CMD_COMPLETE; |
| 1012 | wake_up_interruptible(&command_info->wait_command); |
| 1013 | } else { |
| 1014 | dbg("%s - bad reply from firmware", __FUNCTION__); |
| 1015 | } |
| 1016 | |
| 1017 | /* Continue trying to always read */ |
| 1018 | command_port->read_urb->dev = command_port->serial->dev; |
| 1019 | result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC); |
| 1020 | spin_unlock_irqrestore(&command_info->lock, flags); |
| 1021 | if (result) |
| 1022 | dbg("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); |
| 1023 | } |
| 1024 | |
| 1025 | |
| 1026 | static void whiteheat_read_callback(struct urb *urb, struct pt_regs *regs) |
| 1027 | { |
| 1028 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; |
| 1029 | struct whiteheat_urb_wrap *wrap; |
| 1030 | unsigned char *data = urb->transfer_buffer; |
| 1031 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
| 1032 | |
| 1033 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 1034 | |
| 1035 | spin_lock(&info->lock); |
| 1036 | wrap = urb_to_wrap(urb, &info->rx_urbs_submitted); |
| 1037 | if (!wrap) { |
| 1038 | spin_unlock(&info->lock); |
| 1039 | err("%s - Not my urb!", __FUNCTION__); |
| 1040 | return; |
| 1041 | } |
| 1042 | list_del(&wrap->list); |
| 1043 | spin_unlock(&info->lock); |
| 1044 | |
| 1045 | if (urb->status) { |
| 1046 | dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status); |
| 1047 | spin_lock(&info->lock); |
| 1048 | list_add(&wrap->list, &info->rx_urbs_free); |
| 1049 | spin_unlock(&info->lock); |
| 1050 | return; |
| 1051 | } |
| 1052 | |
| 1053 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data); |
| 1054 | |
| 1055 | spin_lock(&info->lock); |
| 1056 | list_add_tail(&wrap->list, &info->rx_urb_q); |
| 1057 | if (info->flags & THROTTLED) { |
| 1058 | info->flags |= ACTUALLY_THROTTLED; |
| 1059 | spin_unlock(&info->lock); |
| 1060 | return; |
| 1061 | } |
| 1062 | spin_unlock(&info->lock); |
| 1063 | |
| 1064 | schedule_work(&info->rx_work); |
| 1065 | } |
| 1066 | |
| 1067 | |
| 1068 | static void whiteheat_write_callback(struct urb *urb, struct pt_regs *regs) |
| 1069 | { |
| 1070 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; |
| 1071 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
| 1072 | struct whiteheat_urb_wrap *wrap; |
| 1073 | |
| 1074 | dbg("%s - port %d", __FUNCTION__, port->number); |
| 1075 | |
| 1076 | spin_lock(&info->lock); |
| 1077 | wrap = urb_to_wrap(urb, &info->tx_urbs_submitted); |
| 1078 | if (!wrap) { |
| 1079 | spin_unlock(&info->lock); |
| 1080 | err("%s - Not my urb!", __FUNCTION__); |
| 1081 | return; |
| 1082 | } |
| 1083 | list_del(&wrap->list); |
| 1084 | list_add(&wrap->list, &info->tx_urbs_free); |
| 1085 | spin_unlock(&info->lock); |
| 1086 | |
| 1087 | if (urb->status) { |
| 1088 | dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status); |
| 1089 | return; |
| 1090 | } |
| 1091 | |
| 1092 | usb_serial_port_softint((void *)port); |
| 1093 | |
| 1094 | schedule_work(&port->work); |
| 1095 | } |
| 1096 | |
| 1097 | |
| 1098 | /***************************************************************************** |
| 1099 | * Connect Tech's White Heat firmware interface |
| 1100 | *****************************************************************************/ |
| 1101 | static int firm_send_command (struct usb_serial_port *port, __u8 command, __u8 *data, __u8 datasize) |
| 1102 | { |
| 1103 | struct usb_serial_port *command_port; |
| 1104 | struct whiteheat_command_private *command_info; |
| 1105 | struct whiteheat_private *info; |
| 1106 | __u8 *transfer_buffer; |
| 1107 | int retval = 0; |
| 1108 | unsigned long flags; |
| 1109 | |
| 1110 | dbg("%s - command %d", __FUNCTION__, command); |
| 1111 | |
| 1112 | command_port = port->serial->port[COMMAND_PORT]; |
| 1113 | command_info = usb_get_serial_port_data(command_port); |
| 1114 | spin_lock_irqsave(&command_info->lock, flags); |
| 1115 | command_info->command_finished = FALSE; |
| 1116 | |
| 1117 | transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer; |
| 1118 | transfer_buffer[0] = command; |
| 1119 | memcpy (&transfer_buffer[1], data, datasize); |
| 1120 | command_port->write_urb->transfer_buffer_length = datasize + 1; |
| 1121 | command_port->write_urb->dev = port->serial->dev; |
| 1122 | retval = usb_submit_urb (command_port->write_urb, GFP_KERNEL); |
| 1123 | if (retval) { |
| 1124 | dbg("%s - submit urb failed", __FUNCTION__); |
| 1125 | goto exit; |
| 1126 | } |
| 1127 | spin_unlock_irqrestore(&command_info->lock, flags); |
| 1128 | |
| 1129 | /* wait for the command to complete */ |
| 1130 | wait_event_interruptible_timeout(command_info->wait_command, |
| 1131 | (command_info->command_finished != FALSE), COMMAND_TIMEOUT); |
| 1132 | |
| 1133 | spin_lock_irqsave(&command_info->lock, flags); |
| 1134 | |
| 1135 | if (command_info->command_finished == FALSE) { |
| 1136 | dbg("%s - command timed out.", __FUNCTION__); |
| 1137 | retval = -ETIMEDOUT; |
| 1138 | goto exit; |
| 1139 | } |
| 1140 | |
| 1141 | if (command_info->command_finished == WHITEHEAT_CMD_FAILURE) { |
| 1142 | dbg("%s - command failed.", __FUNCTION__); |
| 1143 | retval = -EIO; |
| 1144 | goto exit; |
| 1145 | } |
| 1146 | |
| 1147 | if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) { |
| 1148 | dbg("%s - command completed.", __FUNCTION__); |
| 1149 | switch (command) { |
| 1150 | case WHITEHEAT_GET_DTR_RTS: |
| 1151 | info = usb_get_serial_port_data(port); |
| 1152 | memcpy(&info->mcr, command_info->result_buffer, sizeof(struct whiteheat_dr_info)); |
| 1153 | break; |
| 1154 | } |
| 1155 | } |
| 1156 | |
| 1157 | exit: |
| 1158 | spin_unlock_irqrestore(&command_info->lock, flags); |
| 1159 | return retval; |
| 1160 | } |
| 1161 | |
| 1162 | |
| 1163 | static int firm_open(struct usb_serial_port *port) { |
| 1164 | struct whiteheat_simple open_command; |
| 1165 | |
| 1166 | open_command.port = port->number - port->serial->minor + 1; |
| 1167 | return firm_send_command(port, WHITEHEAT_OPEN, (__u8 *)&open_command, sizeof(open_command)); |
| 1168 | } |
| 1169 | |
| 1170 | |
| 1171 | static int firm_close(struct usb_serial_port *port) { |
| 1172 | struct whiteheat_simple close_command; |
| 1173 | |
| 1174 | close_command.port = port->number - port->serial->minor + 1; |
| 1175 | return firm_send_command(port, WHITEHEAT_CLOSE, (__u8 *)&close_command, sizeof(close_command)); |
| 1176 | } |
| 1177 | |
| 1178 | |
| 1179 | static int firm_setup_port(struct usb_serial_port *port) { |
| 1180 | struct whiteheat_port_settings port_settings; |
| 1181 | unsigned int cflag = port->tty->termios->c_cflag; |
| 1182 | |
| 1183 | port_settings.port = port->number + 1; |
| 1184 | |
| 1185 | /* get the byte size */ |
| 1186 | switch (cflag & CSIZE) { |
| 1187 | case CS5: port_settings.bits = 5; break; |
| 1188 | case CS6: port_settings.bits = 6; break; |
| 1189 | case CS7: port_settings.bits = 7; break; |
| 1190 | default: |
| 1191 | case CS8: port_settings.bits = 8; break; |
| 1192 | } |
| 1193 | dbg("%s - data bits = %d", __FUNCTION__, port_settings.bits); |
| 1194 | |
| 1195 | /* determine the parity */ |
| 1196 | if (cflag & PARENB) |
| 1197 | if (cflag & CMSPAR) |
| 1198 | if (cflag & PARODD) |
| 1199 | port_settings.parity = WHITEHEAT_PAR_MARK; |
| 1200 | else |
| 1201 | port_settings.parity = WHITEHEAT_PAR_SPACE; |
| 1202 | else |
| 1203 | if (cflag & PARODD) |
| 1204 | port_settings.parity = WHITEHEAT_PAR_ODD; |
| 1205 | else |
| 1206 | port_settings.parity = WHITEHEAT_PAR_EVEN; |
| 1207 | else |
| 1208 | port_settings.parity = WHITEHEAT_PAR_NONE; |
| 1209 | dbg("%s - parity = %c", __FUNCTION__, port_settings.parity); |
| 1210 | |
| 1211 | /* figure out the stop bits requested */ |
| 1212 | if (cflag & CSTOPB) |
| 1213 | port_settings.stop = 2; |
| 1214 | else |
| 1215 | port_settings.stop = 1; |
| 1216 | dbg("%s - stop bits = %d", __FUNCTION__, port_settings.stop); |
| 1217 | |
| 1218 | /* figure out the flow control settings */ |
| 1219 | if (cflag & CRTSCTS) |
| 1220 | port_settings.hflow = (WHITEHEAT_HFLOW_CTS | WHITEHEAT_HFLOW_RTS); |
| 1221 | else |
| 1222 | port_settings.hflow = WHITEHEAT_HFLOW_NONE; |
| 1223 | dbg("%s - hardware flow control = %s %s %s %s", __FUNCTION__, |
| 1224 | (port_settings.hflow & WHITEHEAT_HFLOW_CTS) ? "CTS" : "", |
| 1225 | (port_settings.hflow & WHITEHEAT_HFLOW_RTS) ? "RTS" : "", |
| 1226 | (port_settings.hflow & WHITEHEAT_HFLOW_DSR) ? "DSR" : "", |
| 1227 | (port_settings.hflow & WHITEHEAT_HFLOW_DTR) ? "DTR" : ""); |
| 1228 | |
| 1229 | /* determine software flow control */ |
| 1230 | if (I_IXOFF(port->tty)) |
| 1231 | port_settings.sflow = WHITEHEAT_SFLOW_RXTX; |
| 1232 | else |
| 1233 | port_settings.sflow = WHITEHEAT_SFLOW_NONE; |
| 1234 | dbg("%s - software flow control = %c", __FUNCTION__, port_settings.sflow); |
| 1235 | |
| 1236 | port_settings.xon = START_CHAR(port->tty); |
| 1237 | port_settings.xoff = STOP_CHAR(port->tty); |
| 1238 | dbg("%s - XON = %2x, XOFF = %2x", __FUNCTION__, port_settings.xon, port_settings.xoff); |
| 1239 | |
| 1240 | /* get the baud rate wanted */ |
| 1241 | port_settings.baud = tty_get_baud_rate(port->tty); |
| 1242 | dbg("%s - baud rate = %d", __FUNCTION__, port_settings.baud); |
| 1243 | |
| 1244 | /* handle any settings that aren't specified in the tty structure */ |
| 1245 | port_settings.lloop = 0; |
| 1246 | |
| 1247 | /* now send the message to the device */ |
| 1248 | return firm_send_command(port, WHITEHEAT_SETUP_PORT, (__u8 *)&port_settings, sizeof(port_settings)); |
| 1249 | } |
| 1250 | |
| 1251 | |
| 1252 | static int firm_set_rts(struct usb_serial_port *port, __u8 onoff) { |
| 1253 | struct whiteheat_set_rdb rts_command; |
| 1254 | |
| 1255 | rts_command.port = port->number - port->serial->minor + 1; |
| 1256 | rts_command.state = onoff; |
| 1257 | return firm_send_command(port, WHITEHEAT_SET_RTS, (__u8 *)&rts_command, sizeof(rts_command)); |
| 1258 | } |
| 1259 | |
| 1260 | |
| 1261 | static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff) { |
| 1262 | struct whiteheat_set_rdb dtr_command; |
| 1263 | |
| 1264 | dtr_command.port = port->number - port->serial->minor + 1; |
| 1265 | dtr_command.state = onoff; |
| 1266 | return firm_send_command(port, WHITEHEAT_SET_RTS, (__u8 *)&dtr_command, sizeof(dtr_command)); |
| 1267 | } |
| 1268 | |
| 1269 | |
| 1270 | static int firm_set_break(struct usb_serial_port *port, __u8 onoff) { |
| 1271 | struct whiteheat_set_rdb break_command; |
| 1272 | |
| 1273 | break_command.port = port->number - port->serial->minor + 1; |
| 1274 | break_command.state = onoff; |
| 1275 | return firm_send_command(port, WHITEHEAT_SET_RTS, (__u8 *)&break_command, sizeof(break_command)); |
| 1276 | } |
| 1277 | |
| 1278 | |
| 1279 | static int firm_purge(struct usb_serial_port *port, __u8 rxtx) { |
| 1280 | struct whiteheat_purge purge_command; |
| 1281 | |
| 1282 | purge_command.port = port->number - port->serial->minor + 1; |
| 1283 | purge_command.what = rxtx; |
| 1284 | return firm_send_command(port, WHITEHEAT_PURGE, (__u8 *)&purge_command, sizeof(purge_command)); |
| 1285 | } |
| 1286 | |
| 1287 | |
| 1288 | static int firm_get_dtr_rts(struct usb_serial_port *port) { |
| 1289 | struct whiteheat_simple get_dr_command; |
| 1290 | |
| 1291 | get_dr_command.port = port->number - port->serial->minor + 1; |
| 1292 | return firm_send_command(port, WHITEHEAT_GET_DTR_RTS, (__u8 *)&get_dr_command, sizeof(get_dr_command)); |
| 1293 | } |
| 1294 | |
| 1295 | |
| 1296 | static int firm_report_tx_done(struct usb_serial_port *port) { |
| 1297 | struct whiteheat_simple close_command; |
| 1298 | |
| 1299 | close_command.port = port->number - port->serial->minor + 1; |
| 1300 | return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE, (__u8 *)&close_command, sizeof(close_command)); |
| 1301 | } |
| 1302 | |
| 1303 | |
| 1304 | /***************************************************************************** |
| 1305 | * Connect Tech's White Heat utility functions |
| 1306 | *****************************************************************************/ |
| 1307 | static int start_command_port(struct usb_serial *serial) |
| 1308 | { |
| 1309 | struct usb_serial_port *command_port; |
| 1310 | struct whiteheat_command_private *command_info; |
| 1311 | unsigned long flags; |
| 1312 | int retval = 0; |
| 1313 | |
| 1314 | command_port = serial->port[COMMAND_PORT]; |
| 1315 | command_info = usb_get_serial_port_data(command_port); |
| 1316 | spin_lock_irqsave(&command_info->lock, flags); |
| 1317 | if (!command_info->port_running) { |
| 1318 | /* Work around HCD bugs */ |
| 1319 | usb_clear_halt(serial->dev, command_port->read_urb->pipe); |
| 1320 | |
| 1321 | command_port->read_urb->dev = serial->dev; |
| 1322 | retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL); |
| 1323 | if (retval) { |
| 1324 | err("%s - failed submitting read urb, error %d", __FUNCTION__, retval); |
| 1325 | goto exit; |
| 1326 | } |
| 1327 | } |
| 1328 | command_info->port_running++; |
| 1329 | |
| 1330 | exit: |
| 1331 | spin_unlock_irqrestore(&command_info->lock, flags); |
| 1332 | return retval; |
| 1333 | } |
| 1334 | |
| 1335 | |
| 1336 | static void stop_command_port(struct usb_serial *serial) |
| 1337 | { |
| 1338 | struct usb_serial_port *command_port; |
| 1339 | struct whiteheat_command_private *command_info; |
| 1340 | unsigned long flags; |
| 1341 | |
| 1342 | command_port = serial->port[COMMAND_PORT]; |
| 1343 | command_info = usb_get_serial_port_data(command_port); |
| 1344 | spin_lock_irqsave(&command_info->lock, flags); |
| 1345 | command_info->port_running--; |
| 1346 | if (!command_info->port_running) |
| 1347 | usb_kill_urb(command_port->read_urb); |
| 1348 | spin_unlock_irqrestore(&command_info->lock, flags); |
| 1349 | } |
| 1350 | |
| 1351 | |
| 1352 | static int start_port_read(struct usb_serial_port *port) |
| 1353 | { |
| 1354 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
| 1355 | struct whiteheat_urb_wrap *wrap; |
| 1356 | struct urb *urb; |
| 1357 | int retval = 0; |
| 1358 | unsigned long flags; |
| 1359 | struct list_head *tmp; |
| 1360 | struct list_head *tmp2; |
| 1361 | |
| 1362 | spin_lock_irqsave(&info->lock, flags); |
| 1363 | |
| 1364 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_free) { |
| 1365 | list_del(tmp); |
| 1366 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); |
| 1367 | urb = wrap->urb; |
| 1368 | urb->dev = port->serial->dev; |
| 1369 | retval = usb_submit_urb(urb, GFP_KERNEL); |
| 1370 | if (retval) { |
| 1371 | list_add(tmp, &info->rx_urbs_free); |
| 1372 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_submitted) { |
| 1373 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); |
| 1374 | urb = wrap->urb; |
| 1375 | usb_kill_urb(urb); |
| 1376 | list_del(tmp); |
| 1377 | list_add(tmp, &info->rx_urbs_free); |
| 1378 | } |
| 1379 | break; |
| 1380 | } |
| 1381 | list_add(tmp, &info->rx_urbs_submitted); |
| 1382 | } |
| 1383 | |
| 1384 | spin_unlock_irqrestore(&info->lock, flags); |
| 1385 | |
| 1386 | return retval; |
| 1387 | } |
| 1388 | |
| 1389 | |
| 1390 | static struct whiteheat_urb_wrap *urb_to_wrap(struct urb* urb, struct list_head *head) |
| 1391 | { |
| 1392 | struct whiteheat_urb_wrap *wrap; |
| 1393 | struct list_head *tmp; |
| 1394 | |
| 1395 | list_for_each(tmp, head) { |
| 1396 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); |
| 1397 | if (wrap->urb == urb) |
| 1398 | return wrap; |
| 1399 | } |
| 1400 | |
| 1401 | return NULL; |
| 1402 | } |
| 1403 | |
| 1404 | |
| 1405 | static struct list_head *list_first(struct list_head *head) |
| 1406 | { |
| 1407 | return head->next; |
| 1408 | } |
| 1409 | |
| 1410 | |
| 1411 | static void rx_data_softint(void *private) |
| 1412 | { |
| 1413 | struct usb_serial_port *port = (struct usb_serial_port *)private; |
| 1414 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
| 1415 | struct tty_struct *tty = port->tty; |
| 1416 | struct whiteheat_urb_wrap *wrap; |
| 1417 | struct urb *urb; |
| 1418 | unsigned long flags; |
| 1419 | struct list_head *tmp; |
| 1420 | struct list_head *tmp2; |
| 1421 | int result; |
| 1422 | int sent = 0; |
| 1423 | |
| 1424 | spin_lock_irqsave(&info->lock, flags); |
| 1425 | if (info->flags & THROTTLED) { |
| 1426 | spin_unlock_irqrestore(&info->lock, flags); |
| 1427 | return; |
| 1428 | } |
| 1429 | |
| 1430 | list_for_each_safe(tmp, tmp2, &info->rx_urb_q) { |
| 1431 | list_del(tmp); |
| 1432 | spin_unlock_irqrestore(&info->lock, flags); |
| 1433 | |
| 1434 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); |
| 1435 | urb = wrap->urb; |
| 1436 | |
| 1437 | if (tty && urb->actual_length) { |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 1438 | int len = tty_buffer_request_room(tty, urb->actual_length); |
| 1439 | /* This stuff can go away now I suspect */ |
| 1440 | if (unlikely(len < urb->actual_length)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | spin_lock_irqsave(&info->lock, flags); |
| 1442 | list_add(tmp, &info->rx_urb_q); |
| 1443 | spin_unlock_irqrestore(&info->lock, flags); |
| 1444 | tty_flip_buffer_push(tty); |
| 1445 | schedule_work(&info->rx_work); |
| 1446 | return; |
| 1447 | } |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 1448 | tty_insert_flip_string(tty, urb->transfer_buffer, len); |
| 1449 | sent += len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1450 | } |
| 1451 | |
| 1452 | urb->dev = port->serial->dev; |
| 1453 | result = usb_submit_urb(urb, GFP_ATOMIC); |
| 1454 | if (result) { |
| 1455 | err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); |
| 1456 | spin_lock_irqsave(&info->lock, flags); |
| 1457 | list_add(tmp, &info->rx_urbs_free); |
| 1458 | continue; |
| 1459 | } |
| 1460 | |
| 1461 | spin_lock_irqsave(&info->lock, flags); |
| 1462 | list_add(tmp, &info->rx_urbs_submitted); |
| 1463 | } |
| 1464 | spin_unlock_irqrestore(&info->lock, flags); |
| 1465 | |
| 1466 | if (sent) |
| 1467 | tty_flip_buffer_push(tty); |
| 1468 | } |
| 1469 | |
| 1470 | |
| 1471 | /***************************************************************************** |
| 1472 | * Connect Tech's White Heat module functions |
| 1473 | *****************************************************************************/ |
| 1474 | static int __init whiteheat_init (void) |
| 1475 | { |
| 1476 | int retval; |
| 1477 | retval = usb_serial_register(&whiteheat_fake_device); |
| 1478 | if (retval) |
| 1479 | goto failed_fake_register; |
| 1480 | retval = usb_serial_register(&whiteheat_device); |
| 1481 | if (retval) |
| 1482 | goto failed_device_register; |
| 1483 | retval = usb_register(&whiteheat_driver); |
| 1484 | if (retval) |
| 1485 | goto failed_usb_register; |
| 1486 | info(DRIVER_DESC " " DRIVER_VERSION); |
| 1487 | return 0; |
| 1488 | failed_usb_register: |
| 1489 | usb_serial_deregister(&whiteheat_device); |
| 1490 | failed_device_register: |
| 1491 | usb_serial_deregister(&whiteheat_fake_device); |
| 1492 | failed_fake_register: |
| 1493 | return retval; |
| 1494 | } |
| 1495 | |
| 1496 | |
| 1497 | static void __exit whiteheat_exit (void) |
| 1498 | { |
| 1499 | usb_deregister (&whiteheat_driver); |
| 1500 | usb_serial_deregister (&whiteheat_fake_device); |
| 1501 | usb_serial_deregister (&whiteheat_device); |
| 1502 | } |
| 1503 | |
| 1504 | |
| 1505 | module_init(whiteheat_init); |
| 1506 | module_exit(whiteheat_exit); |
| 1507 | |
| 1508 | MODULE_AUTHOR( DRIVER_AUTHOR ); |
| 1509 | MODULE_DESCRIPTION( DRIVER_DESC ); |
| 1510 | MODULE_LICENSE("GPL"); |
| 1511 | |
| 1512 | module_param(urb_pool_size, int, 0); |
| 1513 | MODULE_PARM_DESC(urb_pool_size, "Number of urbs to use for buffering"); |
| 1514 | |
| 1515 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
| 1516 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |