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 16 * driver 17 */ 18 19 #include <linux/kernel.h> 20 #include <linux/errno.h> 21 #include <linux/slab.h> 22 #include <linux/tty.h> 23 #include <linux/tty_driver.h> 24 #include <linux/tty_flip.h> 25 #include <linux/module.h> 26 #include <linux/spinlock.h> 27 #include <linux/mutex.h> 28 #include <linux/uaccess.h> 29 #include <asm/termbits.h> 30 #include <linux/usb.h> 31 #include <linux/serial_reg.h> 32 #include <linux/serial.h> 33 #include <linux/usb/serial.h> 34 #include <linux/usb/ezusb.h> 35 #include "whiteheat.h" /* WhiteHEAT specific commands */ 36 37 #ifndef CMSPAR 38 #define CMSPAR 0 39 #endif 40 41 /* 42 * Version Information 43 */ 44 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Stuart MacDonald <stuartm@connecttech.com>" 45 #define DRIVER_DESC "USB ConnectTech WhiteHEAT driver" 46 47 #define CONNECT_TECH_VENDOR_ID 0x0710 48 #define CONNECT_TECH_FAKE_WHITE_HEAT_ID 0x0001 49 #define CONNECT_TECH_WHITE_HEAT_ID 0x8001 50 51 /* 52 ID tables for whiteheat are unusual, because we want to different 53 things for different versions of the device. Eventually, this 54 will be doable from a single table. But, for now, we define two 55 separate ID tables, and then a third table that combines them 56 just for the purpose of exporting the autoloading information. 57 */ 58 static const struct usb_device_id id_table_std[] = { 59 { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) }, 60 { } /* Terminating entry */ 61 }; 62 63 static const struct usb_device_id id_table_prerenumeration[] = { 64 { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) }, 65 { } /* Terminating entry */ 66 }; 67 68 static const struct usb_device_id id_table_combined[] = { 69 { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) }, 70 { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) }, 71 { } /* Terminating entry */ 72 }; 73 74 MODULE_DEVICE_TABLE(usb, id_table_combined); 75 76 77 /* function prototypes for the Connect Tech WhiteHEAT prerenumeration device */ 78 static int whiteheat_firmware_download(struct usb_serial *serial, 79 const struct usb_device_id *id); 80 static int whiteheat_firmware_attach(struct usb_serial *serial); 81 82 /* function prototypes for the Connect Tech WhiteHEAT serial converter */ 83 static int whiteheat_attach(struct usb_serial *serial); 84 static void whiteheat_release(struct usb_serial *serial); 85 static int whiteheat_port_probe(struct usb_serial_port *port); 86 static int whiteheat_port_remove(struct usb_serial_port *port); 87 static int whiteheat_open(struct tty_struct *tty, 88 struct usb_serial_port *port); 89 static void whiteheat_close(struct usb_serial_port *port); 90 static int whiteheat_ioctl(struct tty_struct *tty, 91 unsigned int cmd, unsigned long arg); 92 static void whiteheat_set_termios(struct tty_struct *tty, 93 struct usb_serial_port *port, struct ktermios *old); 94 static int whiteheat_tiocmget(struct tty_struct *tty); 95 static int whiteheat_tiocmset(struct tty_struct *tty, 96 unsigned int set, unsigned int clear); 97 static void whiteheat_break_ctl(struct tty_struct *tty, int break_state); 98 99 static struct usb_serial_driver whiteheat_fake_device = { 100 .driver = { 101 .owner = THIS_MODULE, 102 .name = "whiteheatnofirm", 103 }, 104 .description = "Connect Tech - WhiteHEAT - (prerenumeration)", 105 .id_table = id_table_prerenumeration, 106 .num_ports = 1, 107 .probe = whiteheat_firmware_download, 108 .attach = whiteheat_firmware_attach, 109 }; 110 111 static struct usb_serial_driver whiteheat_device = { 112 .driver = { 113 .owner = THIS_MODULE, 114 .name = "whiteheat", 115 }, 116 .description = "Connect Tech - WhiteHEAT", 117 .id_table = id_table_std, 118 .num_ports = 4, 119 .attach = whiteheat_attach, 120 .release = whiteheat_release, 121 .port_probe = whiteheat_port_probe, 122 .port_remove = whiteheat_port_remove, 123 .open = whiteheat_open, 124 .close = whiteheat_close, 125 .ioctl = whiteheat_ioctl, 126 .set_termios = whiteheat_set_termios, 127 .break_ctl = whiteheat_break_ctl, 128 .tiocmget = whiteheat_tiocmget, 129 .tiocmset = whiteheat_tiocmset, 130 .throttle = usb_serial_generic_throttle, 131 .unthrottle = usb_serial_generic_unthrottle, 132 }; 133 134 static struct usb_serial_driver * const serial_drivers[] = { 135 &whiteheat_fake_device, &whiteheat_device, NULL 136 }; 137 138 struct whiteheat_command_private { 139 struct mutex mutex; 140 __u8 port_running; 141 __u8 command_finished; 142 wait_queue_head_t wait_command; /* for handling sleeping whilst 143 waiting for a command to 144 finish */ 145 __u8 result_buffer[64]; 146 }; 147 148 struct whiteheat_private { 149 __u8 mcr; /* FIXME: no locking on mcr */ 150 }; 151 152 153 /* local function prototypes */ 154 static int start_command_port(struct usb_serial *serial); 155 static void stop_command_port(struct usb_serial *serial); 156 static void command_port_write_callback(struct urb *urb); 157 static void command_port_read_callback(struct urb *urb); 158 159 static int firm_send_command(struct usb_serial_port *port, __u8 command, 160 __u8 *data, __u8 datasize); 161 static int firm_open(struct usb_serial_port *port); 162 static int firm_close(struct usb_serial_port *port); 163 static void firm_setup_port(struct tty_struct *tty); 164 static int firm_set_rts(struct usb_serial_port *port, __u8 onoff); 165 static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff); 166 static int firm_set_break(struct usb_serial_port *port, __u8 onoff); 167 static int firm_purge(struct usb_serial_port *port, __u8 rxtx); 168 static int firm_get_dtr_rts(struct usb_serial_port *port); 169 static int firm_report_tx_done(struct usb_serial_port *port); 170 171 172 #define COMMAND_PORT 4 173 #define COMMAND_TIMEOUT (2*HZ) /* 2 second timeout for a command */ 174 #define COMMAND_TIMEOUT_MS 2000 175 #define CLOSING_DELAY (30 * HZ) 176 177 178 /***************************************************************************** 179 * Connect Tech's White Heat prerenumeration driver functions 180 *****************************************************************************/ 181 182 /* steps to download the firmware to the WhiteHEAT device: 183 - hold the reset (by writing to the reset bit of the CPUCS register) 184 - download the VEND_AX.HEX file to the chip using VENDOR_REQUEST-ANCHOR_LOAD 185 - release the reset (by writing to the CPUCS register) 186 - download the WH.HEX file for all addresses greater than 0x1b3f using 187 VENDOR_REQUEST-ANCHOR_EXTERNAL_RAM_LOAD 188 - hold the reset 189 - download the WH.HEX file for all addresses less than 0x1b40 using 190 VENDOR_REQUEST_ANCHOR_LOAD 191 - release the reset 192 - device renumerated itself and comes up as new device id with all 193 firmware download completed. 194 */ 195 static int whiteheat_firmware_download(struct usb_serial *serial, 196 const struct usb_device_id *id) 197 { 198 int response; 199 200 response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat_loader.fw"); 201 if (response >= 0) { 202 response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat.fw"); 203 if (response >= 0) 204 return 0; 205 } 206 return -ENOENT; 207 } 208 209 210 static int whiteheat_firmware_attach(struct usb_serial *serial) 211 { 212 /* We want this device to fail to have a driver assigned to it */ 213 return 1; 214 } 215 216 217 /***************************************************************************** 218 * Connect Tech's White Heat serial driver functions 219 *****************************************************************************/ 220 static int whiteheat_attach(struct usb_serial *serial) 221 { 222 struct usb_serial_port *command_port; 223 struct whiteheat_command_private *command_info; 224 struct whiteheat_hw_info *hw_info; 225 int pipe; 226 int ret; 227 int alen; 228 __u8 *command; 229 __u8 *result; 230 231 command_port = serial->port[COMMAND_PORT]; 232 233 pipe = usb_sndbulkpipe(serial->dev, 234 command_port->bulk_out_endpointAddress); 235 command = kmalloc(2, GFP_KERNEL); 236 if (!command) 237 goto no_command_buffer; 238 command[0] = WHITEHEAT_GET_HW_INFO; 239 command[1] = 0; 240 241 result = kmalloc(sizeof(*hw_info) + 1, GFP_KERNEL); 242 if (!result) 243 goto no_result_buffer; 244 /* 245 * When the module is reloaded the firmware is still there and 246 * the endpoints are still in the usb core unchanged. This is the 247 * unlinking bug in disguise. Same for the call below. 248 */ 249 usb_clear_halt(serial->dev, pipe); 250 ret = usb_bulk_msg(serial->dev, pipe, command, 2, 251 &alen, COMMAND_TIMEOUT_MS); 252 if (ret) { 253 dev_err(&serial->dev->dev, "%s: Couldn't send command [%d]\n", 254 serial->type->description, ret); 255 goto no_firmware; 256 } else if (alen != 2) { 257 dev_err(&serial->dev->dev, "%s: Send command incomplete [%d]\n", 258 serial->type->description, alen); 259 goto no_firmware; 260 } 261 262 pipe = usb_rcvbulkpipe(serial->dev, 263 command_port->bulk_in_endpointAddress); 264 /* See the comment on the usb_clear_halt() above */ 265 usb_clear_halt(serial->dev, pipe); 266 ret = usb_bulk_msg(serial->dev, pipe, result, 267 sizeof(*hw_info) + 1, &alen, COMMAND_TIMEOUT_MS); 268 if (ret) { 269 dev_err(&serial->dev->dev, "%s: Couldn't get results [%d]\n", 270 serial->type->description, ret); 271 goto no_firmware; 272 } else if (alen != sizeof(*hw_info) + 1) { 273 dev_err(&serial->dev->dev, "%s: Get results incomplete [%d]\n", 274 serial->type->description, alen); 275 goto no_firmware; 276 } else if (result[0] != command[0]) { 277 dev_err(&serial->dev->dev, "%s: Command failed [%d]\n", 278 serial->type->description, result[0]); 279 goto no_firmware; 280 } 281 282 hw_info = (struct whiteheat_hw_info *)&result[1]; 283 284 dev_info(&serial->dev->dev, "%s: Firmware v%d.%02d\n", 285 serial->type->description, 286 hw_info->sw_major_rev, hw_info->sw_minor_rev); 287 288 command_info = kmalloc(sizeof(struct whiteheat_command_private), 289 GFP_KERNEL); 290 if (!command_info) 291 goto no_command_private; 292 293 mutex_init(&command_info->mutex); 294 command_info->port_running = 0; 295 init_waitqueue_head(&command_info->wait_command); 296 usb_set_serial_port_data(command_port, command_info); 297 command_port->write_urb->complete = command_port_write_callback; 298 command_port->read_urb->complete = command_port_read_callback; 299 kfree(result); 300 kfree(command); 301 302 return 0; 303 304 no_firmware: 305 /* Firmware likely not running */ 306 dev_err(&serial->dev->dev, 307 "%s: Unable to retrieve firmware version, try replugging\n", 308 serial->type->description); 309 dev_err(&serial->dev->dev, 310 "%s: If the firmware is not running (status led not blinking)\n", 311 serial->type->description); 312 dev_err(&serial->dev->dev, 313 "%s: please contact support@connecttech.com\n", 314 serial->type->description); 315 kfree(result); 316 kfree(command); 317 return -ENODEV; 318 319 no_command_private: 320 kfree(result); 321 no_result_buffer: 322 kfree(command); 323 no_command_buffer: 324 return -ENOMEM; 325 } 326 327 static void whiteheat_release(struct usb_serial *serial) 328 { 329 struct usb_serial_port *command_port; 330 331 /* free up our private data for our command port */ 332 command_port = serial->port[COMMAND_PORT]; 333 kfree(usb_get_serial_port_data(command_port)); 334 } 335 336 static int whiteheat_port_probe(struct usb_serial_port *port) 337 { 338 struct whiteheat_private *info; 339 340 info = kzalloc(sizeof(*info), GFP_KERNEL); 341 if (!info) 342 return -ENOMEM; 343 344 usb_set_serial_port_data(port, info); 345 346 return 0; 347 } 348 349 static int whiteheat_port_remove(struct usb_serial_port *port) 350 { 351 struct whiteheat_private *info; 352 353 info = usb_get_serial_port_data(port); 354 kfree(info); 355 356 return 0; 357 } 358 359 static int whiteheat_open(struct tty_struct *tty, struct usb_serial_port *port) 360 { 361 int retval; 362 363 retval = start_command_port(port->serial); 364 if (retval) 365 goto exit; 366 367 /* send an open port command */ 368 retval = firm_open(port); 369 if (retval) { 370 stop_command_port(port->serial); 371 goto exit; 372 } 373 374 retval = firm_purge(port, WHITEHEAT_PURGE_RX | WHITEHEAT_PURGE_TX); 375 if (retval) { 376 firm_close(port); 377 stop_command_port(port->serial); 378 goto exit; 379 } 380 381 if (tty) 382 firm_setup_port(tty); 383 384 /* Work around HCD bugs */ 385 usb_clear_halt(port->serial->dev, port->read_urb->pipe); 386 usb_clear_halt(port->serial->dev, port->write_urb->pipe); 387 388 retval = usb_serial_generic_open(tty, port); 389 if (retval) { 390 firm_close(port); 391 stop_command_port(port->serial); 392 goto exit; 393 } 394 exit: 395 return retval; 396 } 397 398 399 static void whiteheat_close(struct usb_serial_port *port) 400 { 401 firm_report_tx_done(port); 402 firm_close(port); 403 404 usb_serial_generic_close(port); 405 406 stop_command_port(port->serial); 407 } 408 409 static int whiteheat_tiocmget(struct tty_struct *tty) 410 { 411 struct usb_serial_port *port = tty->driver_data; 412 struct whiteheat_private *info = usb_get_serial_port_data(port); 413 unsigned int modem_signals = 0; 414 415 firm_get_dtr_rts(port); 416 if (info->mcr & UART_MCR_DTR) 417 modem_signals |= TIOCM_DTR; 418 if (info->mcr & UART_MCR_RTS) 419 modem_signals |= TIOCM_RTS; 420 421 return modem_signals; 422 } 423 424 static int whiteheat_tiocmset(struct tty_struct *tty, 425 unsigned int set, unsigned int clear) 426 { 427 struct usb_serial_port *port = tty->driver_data; 428 struct whiteheat_private *info = usb_get_serial_port_data(port); 429 430 if (set & TIOCM_RTS) 431 info->mcr |= UART_MCR_RTS; 432 if (set & TIOCM_DTR) 433 info->mcr |= UART_MCR_DTR; 434 435 if (clear & TIOCM_RTS) 436 info->mcr &= ~UART_MCR_RTS; 437 if (clear & TIOCM_DTR) 438 info->mcr &= ~UART_MCR_DTR; 439 440 firm_set_dtr(port, info->mcr & UART_MCR_DTR); 441 firm_set_rts(port, info->mcr & UART_MCR_RTS); 442 return 0; 443 } 444 445 446 static int whiteheat_ioctl(struct tty_struct *tty, 447 unsigned int cmd, unsigned long arg) 448 { 449 struct usb_serial_port *port = tty->driver_data; 450 struct serial_struct serstruct; 451 void __user *user_arg = (void __user *)arg; 452 453 switch (cmd) { 454 case TIOCGSERIAL: 455 memset(&serstruct, 0, sizeof(serstruct)); 456 serstruct.type = PORT_16654; 457 serstruct.line = port->minor; 458 serstruct.port = port->port_number; 459 serstruct.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 460 serstruct.xmit_fifo_size = kfifo_size(&port->write_fifo); 461 serstruct.custom_divisor = 0; 462 serstruct.baud_base = 460800; 463 serstruct.close_delay = CLOSING_DELAY; 464 serstruct.closing_wait = CLOSING_DELAY; 465 466 if (copy_to_user(user_arg, &serstruct, sizeof(serstruct))) 467 return -EFAULT; 468 break; 469 default: 470 break; 471 } 472 473 return -ENOIOCTLCMD; 474 } 475 476 477 static void whiteheat_set_termios(struct tty_struct *tty, 478 struct usb_serial_port *port, struct ktermios *old_termios) 479 { 480 firm_setup_port(tty); 481 } 482 483 static void whiteheat_break_ctl(struct tty_struct *tty, int break_state) 484 { 485 struct usb_serial_port *port = tty->driver_data; 486 firm_set_break(port, break_state); 487 } 488 489 490 /***************************************************************************** 491 * Connect Tech's White Heat callback routines 492 *****************************************************************************/ 493 static void command_port_write_callback(struct urb *urb) 494 { 495 int status = urb->status; 496 497 if (status) { 498 dev_dbg(&urb->dev->dev, "nonzero urb status: %d\n", status); 499 return; 500 } 501 } 502 503 504 static void command_port_read_callback(struct urb *urb) 505 { 506 struct usb_serial_port *command_port = urb->context; 507 struct whiteheat_command_private *command_info; 508 int status = urb->status; 509 unsigned char *data = urb->transfer_buffer; 510 int result; 511 512 command_info = usb_get_serial_port_data(command_port); 513 if (!command_info) { 514 dev_dbg(&urb->dev->dev, "%s - command_info is NULL, exiting.\n", __func__); 515 return; 516 } 517 if (!urb->actual_length) { 518 dev_dbg(&urb->dev->dev, "%s - empty response, exiting.\n", __func__); 519 return; 520 } 521 if (status) { 522 dev_dbg(&urb->dev->dev, "%s - nonzero urb status: %d\n", __func__, status); 523 if (status != -ENOENT) 524 command_info->command_finished = WHITEHEAT_CMD_FAILURE; 525 wake_up(&command_info->wait_command); 526 return; 527 } 528 529 usb_serial_debug_data(&command_port->dev, __func__, urb->actual_length, data); 530 531 if (data[0] == WHITEHEAT_CMD_COMPLETE) { 532 command_info->command_finished = WHITEHEAT_CMD_COMPLETE; 533 wake_up(&command_info->wait_command); 534 } else if (data[0] == WHITEHEAT_CMD_FAILURE) { 535 command_info->command_finished = WHITEHEAT_CMD_FAILURE; 536 wake_up(&command_info->wait_command); 537 } else if (data[0] == WHITEHEAT_EVENT) { 538 /* These are unsolicited reports from the firmware, hence no 539 waiting command to wakeup */ 540 dev_dbg(&urb->dev->dev, "%s - event received\n", __func__); 541 } else if ((data[0] == WHITEHEAT_GET_DTR_RTS) && 542 (urb->actual_length - 1 <= sizeof(command_info->result_buffer))) { 543 memcpy(command_info->result_buffer, &data[1], 544 urb->actual_length - 1); 545 command_info->command_finished = WHITEHEAT_CMD_COMPLETE; 546 wake_up(&command_info->wait_command); 547 } else 548 dev_dbg(&urb->dev->dev, "%s - bad reply from firmware\n", __func__); 549 550 /* Continue trying to always read */ 551 result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC); 552 if (result) 553 dev_dbg(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n", 554 __func__, result); 555 } 556 557 558 /***************************************************************************** 559 * Connect Tech's White Heat firmware interface 560 *****************************************************************************/ 561 static int firm_send_command(struct usb_serial_port *port, __u8 command, 562 __u8 *data, __u8 datasize) 563 { 564 struct usb_serial_port *command_port; 565 struct whiteheat_command_private *command_info; 566 struct whiteheat_private *info; 567 struct device *dev = &port->dev; 568 __u8 *transfer_buffer; 569 int retval = 0; 570 int t; 571 572 dev_dbg(dev, "%s - command %d\n", __func__, command); 573 574 command_port = port->serial->port[COMMAND_PORT]; 575 command_info = usb_get_serial_port_data(command_port); 576 mutex_lock(&command_info->mutex); 577 command_info->command_finished = false; 578 579 transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer; 580 transfer_buffer[0] = command; 581 memcpy(&transfer_buffer[1], data, datasize); 582 command_port->write_urb->transfer_buffer_length = datasize + 1; 583 retval = usb_submit_urb(command_port->write_urb, GFP_NOIO); 584 if (retval) { 585 dev_dbg(dev, "%s - submit urb failed\n", __func__); 586 goto exit; 587 } 588 589 /* wait for the command to complete */ 590 t = wait_event_timeout(command_info->wait_command, 591 (bool)command_info->command_finished, COMMAND_TIMEOUT); 592 if (!t) 593 usb_kill_urb(command_port->write_urb); 594 595 if (command_info->command_finished == false) { 596 dev_dbg(dev, "%s - command timed out.\n", __func__); 597 retval = -ETIMEDOUT; 598 goto exit; 599 } 600 601 if (command_info->command_finished == WHITEHEAT_CMD_FAILURE) { 602 dev_dbg(dev, "%s - command failed.\n", __func__); 603 retval = -EIO; 604 goto exit; 605 } 606 607 if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) { 608 dev_dbg(dev, "%s - command completed.\n", __func__); 609 switch (command) { 610 case WHITEHEAT_GET_DTR_RTS: 611 info = usb_get_serial_port_data(port); 612 memcpy(&info->mcr, command_info->result_buffer, 613 sizeof(struct whiteheat_dr_info)); 614 break; 615 } 616 } 617 exit: 618 mutex_unlock(&command_info->mutex); 619 return retval; 620 } 621 622 623 static int firm_open(struct usb_serial_port *port) 624 { 625 struct whiteheat_simple open_command; 626 627 open_command.port = port->port_number + 1; 628 return firm_send_command(port, WHITEHEAT_OPEN, 629 (__u8 *)&open_command, sizeof(open_command)); 630 } 631 632 633 static int firm_close(struct usb_serial_port *port) 634 { 635 struct whiteheat_simple close_command; 636 637 close_command.port = port->port_number + 1; 638 return firm_send_command(port, WHITEHEAT_CLOSE, 639 (__u8 *)&close_command, sizeof(close_command)); 640 } 641 642 643 static void firm_setup_port(struct tty_struct *tty) 644 { 645 struct usb_serial_port *port = tty->driver_data; 646 struct device *dev = &port->dev; 647 struct whiteheat_port_settings port_settings; 648 unsigned int cflag = tty->termios.c_cflag; 649 650 port_settings.port = port->port_number + 1; 651 652 /* get the byte size */ 653 switch (cflag & CSIZE) { 654 case CS5: port_settings.bits = 5; break; 655 case CS6: port_settings.bits = 6; break; 656 case CS7: port_settings.bits = 7; break; 657 default: 658 case CS8: port_settings.bits = 8; break; 659 } 660 dev_dbg(dev, "%s - data bits = %d\n", __func__, port_settings.bits); 661 662 /* determine the parity */ 663 if (cflag & PARENB) 664 if (cflag & CMSPAR) 665 if (cflag & PARODD) 666 port_settings.parity = WHITEHEAT_PAR_MARK; 667 else 668 port_settings.parity = WHITEHEAT_PAR_SPACE; 669 else 670 if (cflag & PARODD) 671 port_settings.parity = WHITEHEAT_PAR_ODD; 672 else 673 port_settings.parity = WHITEHEAT_PAR_EVEN; 674 else 675 port_settings.parity = WHITEHEAT_PAR_NONE; 676 dev_dbg(dev, "%s - parity = %c\n", __func__, port_settings.parity); 677 678 /* figure out the stop bits requested */ 679 if (cflag & CSTOPB) 680 port_settings.stop = 2; 681 else 682 port_settings.stop = 1; 683 dev_dbg(dev, "%s - stop bits = %d\n", __func__, port_settings.stop); 684 685 /* figure out the flow control settings */ 686 if (cflag & CRTSCTS) 687 port_settings.hflow = (WHITEHEAT_HFLOW_CTS | 688 WHITEHEAT_HFLOW_RTS); 689 else 690 port_settings.hflow = WHITEHEAT_HFLOW_NONE; 691 dev_dbg(dev, "%s - hardware flow control = %s %s %s %s\n", __func__, 692 (port_settings.hflow & WHITEHEAT_HFLOW_CTS) ? "CTS" : "", 693 (port_settings.hflow & WHITEHEAT_HFLOW_RTS) ? "RTS" : "", 694 (port_settings.hflow & WHITEHEAT_HFLOW_DSR) ? "DSR" : "", 695 (port_settings.hflow & WHITEHEAT_HFLOW_DTR) ? "DTR" : ""); 696 697 /* determine software flow control */ 698 if (I_IXOFF(tty)) 699 port_settings.sflow = WHITEHEAT_SFLOW_RXTX; 700 else 701 port_settings.sflow = WHITEHEAT_SFLOW_NONE; 702 dev_dbg(dev, "%s - software flow control = %c\n", __func__, port_settings.sflow); 703 704 port_settings.xon = START_CHAR(tty); 705 port_settings.xoff = STOP_CHAR(tty); 706 dev_dbg(dev, "%s - XON = %2x, XOFF = %2x\n", __func__, port_settings.xon, port_settings.xoff); 707 708 /* get the baud rate wanted */ 709 port_settings.baud = tty_get_baud_rate(tty); 710 dev_dbg(dev, "%s - baud rate = %d\n", __func__, port_settings.baud); 711 712 /* fixme: should set validated settings */ 713 tty_encode_baud_rate(tty, port_settings.baud, port_settings.baud); 714 /* handle any settings that aren't specified in the tty structure */ 715 port_settings.lloop = 0; 716 717 /* now send the message to the device */ 718 firm_send_command(port, WHITEHEAT_SETUP_PORT, 719 (__u8 *)&port_settings, sizeof(port_settings)); 720 } 721 722 723 static int firm_set_rts(struct usb_serial_port *port, __u8 onoff) 724 { 725 struct whiteheat_set_rdb rts_command; 726 727 rts_command.port = port->port_number + 1; 728 rts_command.state = onoff; 729 return firm_send_command(port, WHITEHEAT_SET_RTS, 730 (__u8 *)&rts_command, sizeof(rts_command)); 731 } 732 733 734 static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff) 735 { 736 struct whiteheat_set_rdb dtr_command; 737 738 dtr_command.port = port->port_number + 1; 739 dtr_command.state = onoff; 740 return firm_send_command(port, WHITEHEAT_SET_DTR, 741 (__u8 *)&dtr_command, sizeof(dtr_command)); 742 } 743 744 745 static int firm_set_break(struct usb_serial_port *port, __u8 onoff) 746 { 747 struct whiteheat_set_rdb break_command; 748 749 break_command.port = port->port_number + 1; 750 break_command.state = onoff; 751 return firm_send_command(port, WHITEHEAT_SET_BREAK, 752 (__u8 *)&break_command, sizeof(break_command)); 753 } 754 755 756 static int firm_purge(struct usb_serial_port *port, __u8 rxtx) 757 { 758 struct whiteheat_purge purge_command; 759 760 purge_command.port = port->port_number + 1; 761 purge_command.what = rxtx; 762 return firm_send_command(port, WHITEHEAT_PURGE, 763 (__u8 *)&purge_command, sizeof(purge_command)); 764 } 765 766 767 static int firm_get_dtr_rts(struct usb_serial_port *port) 768 { 769 struct whiteheat_simple get_dr_command; 770 771 get_dr_command.port = port->port_number + 1; 772 return firm_send_command(port, WHITEHEAT_GET_DTR_RTS, 773 (__u8 *)&get_dr_command, sizeof(get_dr_command)); 774 } 775 776 777 static int firm_report_tx_done(struct usb_serial_port *port) 778 { 779 struct whiteheat_simple close_command; 780 781 close_command.port = port->port_number + 1; 782 return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE, 783 (__u8 *)&close_command, sizeof(close_command)); 784 } 785 786 787 /***************************************************************************** 788 * Connect Tech's White Heat utility functions 789 *****************************************************************************/ 790 static int start_command_port(struct usb_serial *serial) 791 { 792 struct usb_serial_port *command_port; 793 struct whiteheat_command_private *command_info; 794 int retval = 0; 795 796 command_port = serial->port[COMMAND_PORT]; 797 command_info = usb_get_serial_port_data(command_port); 798 mutex_lock(&command_info->mutex); 799 if (!command_info->port_running) { 800 /* Work around HCD bugs */ 801 usb_clear_halt(serial->dev, command_port->read_urb->pipe); 802 803 retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL); 804 if (retval) { 805 dev_err(&serial->dev->dev, 806 "%s - failed submitting read urb, error %d\n", 807 __func__, retval); 808 goto exit; 809 } 810 } 811 command_info->port_running++; 812 813 exit: 814 mutex_unlock(&command_info->mutex); 815 return retval; 816 } 817 818 819 static void stop_command_port(struct usb_serial *serial) 820 { 821 struct usb_serial_port *command_port; 822 struct whiteheat_command_private *command_info; 823 824 command_port = serial->port[COMMAND_PORT]; 825 command_info = usb_get_serial_port_data(command_port); 826 mutex_lock(&command_info->mutex); 827 command_info->port_running--; 828 if (!command_info->port_running) 829 usb_kill_urb(command_port->read_urb); 830 mutex_unlock(&command_info->mutex); 831 } 832 833 module_usb_serial_driver(serial_drivers, id_table_combined); 834 835 MODULE_AUTHOR(DRIVER_AUTHOR); 836 MODULE_DESCRIPTION(DRIVER_DESC); 837 MODULE_LICENSE("GPL"); 838 839 MODULE_FIRMWARE("whiteheat.fw"); 840 MODULE_FIRMWARE("whiteheat_loader.fw"); 841