1 /* 2 Keyspan USB to Serial Converter driver 3 4 (C) Copyright (C) 2000-2001 Hugh Blemings <hugh@blemings.org> 5 (C) Copyright (C) 2002 Greg Kroah-Hartman <greg@kroah.com> 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 See http://blemings.org/hugh/keyspan.html for more information. 13 14 Code in this driver inspired by and in a number of places taken 15 from Brian Warner's original Keyspan-PDA driver. 16 17 This driver has been put together with the support of Innosys, Inc. 18 and Keyspan, Inc the manufacturers of the Keyspan USB-serial products. 19 Thanks Guys :) 20 21 Thanks to Paulus for miscellaneous tidy ups, some largish chunks 22 of much nicer and/or completely new code and (perhaps most uniquely) 23 having the patience to sit down and explain why and where he'd changed 24 stuff. 25 26 Tip 'o the hat to IBM (and previously Linuxcare :) for supporting 27 staff in their work on open source projects. 28 */ 29 30 31 #include <linux/kernel.h> 32 #include <linux/jiffies.h> 33 #include <linux/errno.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> 40 #include <linux/uaccess.h> 41 #include <linux/usb.h> 42 #include <linux/usb/serial.h> 43 #include <linux/usb/ezusb.h> 44 #include "keyspan.h" 45 46 #define DRIVER_AUTHOR "Hugh Blemings <hugh@misc.nu" 47 #define DRIVER_DESC "Keyspan USB to Serial Converter Driver" 48 49 #define INSTAT_BUFLEN 32 50 #define GLOCONT_BUFLEN 64 51 #define INDAT49W_BUFLEN 512 52 #define IN_BUFLEN 64 53 #define OUT_BUFLEN 64 54 #define INACK_BUFLEN 1 55 #define OUTCONT_BUFLEN 64 56 57 /* Per device and per port private data */ 58 struct keyspan_serial_private { 59 const struct keyspan_device_details *device_details; 60 61 struct urb *instat_urb; 62 char *instat_buf; 63 64 /* added to support 49wg, where data from all 4 ports comes in 65 on 1 EP and high-speed supported */ 66 struct urb *indat_urb; 67 char *indat_buf; 68 69 /* XXX this one probably will need a lock */ 70 struct urb *glocont_urb; 71 char *glocont_buf; 72 char *ctrl_buf; /* for EP0 control message */ 73 }; 74 75 struct keyspan_port_private { 76 /* Keep track of which input & output endpoints to use */ 77 int in_flip; 78 int out_flip; 79 80 /* Keep duplicate of device details in each port 81 structure as well - simplifies some of the 82 callback functions etc. */ 83 const struct keyspan_device_details *device_details; 84 85 /* Input endpoints and buffer for this port */ 86 struct urb *in_urbs[2]; 87 char *in_buffer[2]; 88 /* Output endpoints and buffer for this port */ 89 struct urb *out_urbs[2]; 90 char *out_buffer[2]; 91 92 /* Input ack endpoint */ 93 struct urb *inack_urb; 94 char *inack_buffer; 95 96 /* Output control endpoint */ 97 struct urb *outcont_urb; 98 char *outcont_buffer; 99 100 /* Settings for the port */ 101 int baud; 102 int old_baud; 103 unsigned int cflag; 104 unsigned int old_cflag; 105 enum {flow_none, flow_cts, flow_xon} flow_control; 106 int rts_state; /* Handshaking pins (outputs) */ 107 int dtr_state; 108 int cts_state; /* Handshaking pins (inputs) */ 109 int dsr_state; 110 int dcd_state; 111 int ri_state; 112 int break_on; 113 114 unsigned long tx_start_time[2]; 115 int resend_cont; /* need to resend control packet */ 116 }; 117 118 /* Include Keyspan message headers. All current Keyspan Adapters 119 make use of one of five message formats which are referred 120 to as USA-26, USA-28, USA-49, USA-90, USA-67 by Keyspan and 121 within this driver. */ 122 #include "keyspan_usa26msg.h" 123 #include "keyspan_usa28msg.h" 124 #include "keyspan_usa49msg.h" 125 #include "keyspan_usa90msg.h" 126 #include "keyspan_usa67msg.h" 127 128 129 module_usb_serial_driver(serial_drivers, keyspan_ids_combined); 130 131 static void keyspan_break_ctl(struct tty_struct *tty, int break_state) 132 { 133 struct usb_serial_port *port = tty->driver_data; 134 struct keyspan_port_private *p_priv; 135 136 p_priv = usb_get_serial_port_data(port); 137 138 if (break_state == -1) 139 p_priv->break_on = 1; 140 else 141 p_priv->break_on = 0; 142 143 keyspan_send_setup(port, 0); 144 } 145 146 147 static void keyspan_set_termios(struct tty_struct *tty, 148 struct usb_serial_port *port, struct ktermios *old_termios) 149 { 150 int baud_rate, device_port; 151 struct keyspan_port_private *p_priv; 152 const struct keyspan_device_details *d_details; 153 unsigned int cflag; 154 155 p_priv = usb_get_serial_port_data(port); 156 d_details = p_priv->device_details; 157 cflag = tty->termios.c_cflag; 158 device_port = port->port_number; 159 160 /* Baud rate calculation takes baud rate as an integer 161 so other rates can be generated if desired. */ 162 baud_rate = tty_get_baud_rate(tty); 163 /* If no match or invalid, don't change */ 164 if (d_details->calculate_baud_rate(port, baud_rate, d_details->baudclk, 165 NULL, NULL, NULL, device_port) == KEYSPAN_BAUD_RATE_OK) { 166 /* FIXME - more to do here to ensure rate changes cleanly */ 167 /* FIXME - calculate exact rate from divisor ? */ 168 p_priv->baud = baud_rate; 169 } else 170 baud_rate = tty_termios_baud_rate(old_termios); 171 172 tty_encode_baud_rate(tty, baud_rate, baud_rate); 173 /* set CTS/RTS handshake etc. */ 174 p_priv->cflag = cflag; 175 p_priv->flow_control = (cflag & CRTSCTS) ? flow_cts : flow_none; 176 177 /* Mark/Space not supported */ 178 tty->termios.c_cflag &= ~CMSPAR; 179 180 keyspan_send_setup(port, 0); 181 } 182 183 static int keyspan_tiocmget(struct tty_struct *tty) 184 { 185 struct usb_serial_port *port = tty->driver_data; 186 struct keyspan_port_private *p_priv = usb_get_serial_port_data(port); 187 unsigned int value; 188 189 value = ((p_priv->rts_state) ? TIOCM_RTS : 0) | 190 ((p_priv->dtr_state) ? TIOCM_DTR : 0) | 191 ((p_priv->cts_state) ? TIOCM_CTS : 0) | 192 ((p_priv->dsr_state) ? TIOCM_DSR : 0) | 193 ((p_priv->dcd_state) ? TIOCM_CAR : 0) | 194 ((p_priv->ri_state) ? TIOCM_RNG : 0); 195 196 return value; 197 } 198 199 static int keyspan_tiocmset(struct tty_struct *tty, 200 unsigned int set, unsigned int clear) 201 { 202 struct usb_serial_port *port = tty->driver_data; 203 struct keyspan_port_private *p_priv = usb_get_serial_port_data(port); 204 205 if (set & TIOCM_RTS) 206 p_priv->rts_state = 1; 207 if (set & TIOCM_DTR) 208 p_priv->dtr_state = 1; 209 if (clear & TIOCM_RTS) 210 p_priv->rts_state = 0; 211 if (clear & TIOCM_DTR) 212 p_priv->dtr_state = 0; 213 keyspan_send_setup(port, 0); 214 return 0; 215 } 216 217 /* Write function is similar for the four protocols used 218 with only a minor change for usa90 (usa19hs) required */ 219 static int keyspan_write(struct tty_struct *tty, 220 struct usb_serial_port *port, const unsigned char *buf, int count) 221 { 222 struct keyspan_port_private *p_priv; 223 const struct keyspan_device_details *d_details; 224 int flip; 225 int left, todo; 226 struct urb *this_urb; 227 int err, maxDataLen, dataOffset; 228 229 p_priv = usb_get_serial_port_data(port); 230 d_details = p_priv->device_details; 231 232 if (d_details->msg_format == msg_usa90) { 233 maxDataLen = 64; 234 dataOffset = 0; 235 } else { 236 maxDataLen = 63; 237 dataOffset = 1; 238 } 239 240 dev_dbg(&port->dev, "%s - %d chars, flip=%d\n", __func__, count, 241 p_priv->out_flip); 242 243 for (left = count; left > 0; left -= todo) { 244 todo = left; 245 if (todo > maxDataLen) 246 todo = maxDataLen; 247 248 flip = p_priv->out_flip; 249 250 /* Check we have a valid urb/endpoint before we use it... */ 251 this_urb = p_priv->out_urbs[flip]; 252 if (this_urb == NULL) { 253 /* no bulk out, so return 0 bytes written */ 254 dev_dbg(&port->dev, "%s - no output urb :(\n", __func__); 255 return count; 256 } 257 258 dev_dbg(&port->dev, "%s - endpoint %d flip %d\n", 259 __func__, usb_pipeendpoint(this_urb->pipe), flip); 260 261 if (this_urb->status == -EINPROGRESS) { 262 if (time_before(jiffies, 263 p_priv->tx_start_time[flip] + 10 * HZ)) 264 break; 265 usb_unlink_urb(this_urb); 266 break; 267 } 268 269 /* First byte in buffer is "last flag" (except for usa19hx) 270 - unused so for now so set to zero */ 271 ((char *)this_urb->transfer_buffer)[0] = 0; 272 273 memcpy(this_urb->transfer_buffer + dataOffset, buf, todo); 274 buf += todo; 275 276 /* send the data out the bulk port */ 277 this_urb->transfer_buffer_length = todo + dataOffset; 278 279 err = usb_submit_urb(this_urb, GFP_ATOMIC); 280 if (err != 0) 281 dev_dbg(&port->dev, "usb_submit_urb(write bulk) failed (%d)\n", err); 282 p_priv->tx_start_time[flip] = jiffies; 283 284 /* Flip for next time if usa26 or usa28 interface 285 (not used on usa49) */ 286 p_priv->out_flip = (flip + 1) & d_details->outdat_endp_flip; 287 } 288 289 return count - left; 290 } 291 292 static void usa26_indat_callback(struct urb *urb) 293 { 294 int i, err; 295 int endpoint; 296 struct usb_serial_port *port; 297 unsigned char *data = urb->transfer_buffer; 298 int status = urb->status; 299 300 endpoint = usb_pipeendpoint(urb->pipe); 301 302 if (status) { 303 dev_dbg(&urb->dev->dev, "%s - nonzero status: %x on endpoint %d.\n", 304 __func__, status, endpoint); 305 return; 306 } 307 308 port = urb->context; 309 if (urb->actual_length) { 310 /* 0x80 bit is error flag */ 311 if ((data[0] & 0x80) == 0) { 312 /* no errors on individual bytes, only 313 possible overrun err */ 314 if (data[0] & RXERROR_OVERRUN) 315 err = TTY_OVERRUN; 316 else 317 err = 0; 318 for (i = 1; i < urb->actual_length ; ++i) 319 tty_insert_flip_char(&port->port, data[i], err); 320 } else { 321 /* some bytes had errors, every byte has status */ 322 dev_dbg(&port->dev, "%s - RX error!!!!\n", __func__); 323 for (i = 0; i + 1 < urb->actual_length; i += 2) { 324 int stat = data[i], flag = 0; 325 if (stat & RXERROR_OVERRUN) 326 flag |= TTY_OVERRUN; 327 if (stat & RXERROR_FRAMING) 328 flag |= TTY_FRAME; 329 if (stat & RXERROR_PARITY) 330 flag |= TTY_PARITY; 331 /* XXX should handle break (0x10) */ 332 tty_insert_flip_char(&port->port, data[i+1], 333 flag); 334 } 335 } 336 tty_flip_buffer_push(&port->port); 337 } 338 339 /* Resubmit urb so we continue receiving */ 340 err = usb_submit_urb(urb, GFP_ATOMIC); 341 if (err != 0) 342 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err); 343 } 344 345 /* Outdat handling is common for all devices */ 346 static void usa2x_outdat_callback(struct urb *urb) 347 { 348 struct usb_serial_port *port; 349 struct keyspan_port_private *p_priv; 350 351 port = urb->context; 352 p_priv = usb_get_serial_port_data(port); 353 dev_dbg(&port->dev, "%s - urb %d\n", __func__, urb == p_priv->out_urbs[1]); 354 355 usb_serial_port_softint(port); 356 } 357 358 static void usa26_inack_callback(struct urb *urb) 359 { 360 } 361 362 static void usa26_outcont_callback(struct urb *urb) 363 { 364 struct usb_serial_port *port; 365 struct keyspan_port_private *p_priv; 366 367 port = urb->context; 368 p_priv = usb_get_serial_port_data(port); 369 370 if (p_priv->resend_cont) { 371 dev_dbg(&port->dev, "%s - sending setup\n", __func__); 372 keyspan_usa26_send_setup(port->serial, port, 373 p_priv->resend_cont - 1); 374 } 375 } 376 377 static void usa26_instat_callback(struct urb *urb) 378 { 379 unsigned char *data = urb->transfer_buffer; 380 struct keyspan_usa26_portStatusMessage *msg; 381 struct usb_serial *serial; 382 struct usb_serial_port *port; 383 struct keyspan_port_private *p_priv; 384 int old_dcd_state, err; 385 int status = urb->status; 386 387 serial = urb->context; 388 389 if (status) { 390 dev_dbg(&urb->dev->dev, "%s - nonzero status: %x\n", __func__, status); 391 return; 392 } 393 if (urb->actual_length != 9) { 394 dev_dbg(&urb->dev->dev, "%s - %d byte report??\n", __func__, urb->actual_length); 395 goto exit; 396 } 397 398 msg = (struct keyspan_usa26_portStatusMessage *)data; 399 400 /* Check port number from message and retrieve private data */ 401 if (msg->port >= serial->num_ports) { 402 dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n", __func__, msg->port); 403 goto exit; 404 } 405 port = serial->port[msg->port]; 406 p_priv = usb_get_serial_port_data(port); 407 408 /* Update handshaking pin state information */ 409 old_dcd_state = p_priv->dcd_state; 410 p_priv->cts_state = ((msg->hskia_cts) ? 1 : 0); 411 p_priv->dsr_state = ((msg->dsr) ? 1 : 0); 412 p_priv->dcd_state = ((msg->gpia_dcd) ? 1 : 0); 413 p_priv->ri_state = ((msg->ri) ? 1 : 0); 414 415 if (old_dcd_state != p_priv->dcd_state) 416 tty_port_tty_hangup(&port->port, true); 417 418 /* Resubmit urb so we continue receiving */ 419 err = usb_submit_urb(urb, GFP_ATOMIC); 420 if (err != 0) 421 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err); 422 exit: ; 423 } 424 425 static void usa26_glocont_callback(struct urb *urb) 426 { 427 } 428 429 430 static void usa28_indat_callback(struct urb *urb) 431 { 432 int err; 433 struct usb_serial_port *port; 434 unsigned char *data; 435 struct keyspan_port_private *p_priv; 436 int status = urb->status; 437 438 port = urb->context; 439 p_priv = usb_get_serial_port_data(port); 440 data = urb->transfer_buffer; 441 442 if (urb != p_priv->in_urbs[p_priv->in_flip]) 443 return; 444 445 do { 446 if (status) { 447 dev_dbg(&urb->dev->dev, "%s - nonzero status: %x on endpoint %d.\n", 448 __func__, status, usb_pipeendpoint(urb->pipe)); 449 return; 450 } 451 452 port = urb->context; 453 p_priv = usb_get_serial_port_data(port); 454 data = urb->transfer_buffer; 455 456 if (urb->actual_length) { 457 tty_insert_flip_string(&port->port, data, 458 urb->actual_length); 459 tty_flip_buffer_push(&port->port); 460 } 461 462 /* Resubmit urb so we continue receiving */ 463 err = usb_submit_urb(urb, GFP_ATOMIC); 464 if (err != 0) 465 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", 466 __func__, err); 467 p_priv->in_flip ^= 1; 468 469 urb = p_priv->in_urbs[p_priv->in_flip]; 470 } while (urb->status != -EINPROGRESS); 471 } 472 473 static void usa28_inack_callback(struct urb *urb) 474 { 475 } 476 477 static void usa28_outcont_callback(struct urb *urb) 478 { 479 struct usb_serial_port *port; 480 struct keyspan_port_private *p_priv; 481 482 port = urb->context; 483 p_priv = usb_get_serial_port_data(port); 484 485 if (p_priv->resend_cont) { 486 dev_dbg(&port->dev, "%s - sending setup\n", __func__); 487 keyspan_usa28_send_setup(port->serial, port, 488 p_priv->resend_cont - 1); 489 } 490 } 491 492 static void usa28_instat_callback(struct urb *urb) 493 { 494 int err; 495 unsigned char *data = urb->transfer_buffer; 496 struct keyspan_usa28_portStatusMessage *msg; 497 struct usb_serial *serial; 498 struct usb_serial_port *port; 499 struct keyspan_port_private *p_priv; 500 int old_dcd_state; 501 int status = urb->status; 502 503 serial = urb->context; 504 505 if (status) { 506 dev_dbg(&urb->dev->dev, "%s - nonzero status: %x\n", __func__, status); 507 return; 508 } 509 510 if (urb->actual_length != sizeof(struct keyspan_usa28_portStatusMessage)) { 511 dev_dbg(&urb->dev->dev, "%s - bad length %d\n", __func__, urb->actual_length); 512 goto exit; 513 } 514 515 msg = (struct keyspan_usa28_portStatusMessage *)data; 516 517 /* Check port number from message and retrieve private data */ 518 if (msg->port >= serial->num_ports) { 519 dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n", __func__, msg->port); 520 goto exit; 521 } 522 port = serial->port[msg->port]; 523 p_priv = usb_get_serial_port_data(port); 524 525 /* Update handshaking pin state information */ 526 old_dcd_state = p_priv->dcd_state; 527 p_priv->cts_state = ((msg->cts) ? 1 : 0); 528 p_priv->dsr_state = ((msg->dsr) ? 1 : 0); 529 p_priv->dcd_state = ((msg->dcd) ? 1 : 0); 530 p_priv->ri_state = ((msg->ri) ? 1 : 0); 531 532 if (old_dcd_state != p_priv->dcd_state && old_dcd_state) 533 tty_port_tty_hangup(&port->port, true); 534 535 /* Resubmit urb so we continue receiving */ 536 err = usb_submit_urb(urb, GFP_ATOMIC); 537 if (err != 0) 538 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err); 539 exit: ; 540 } 541 542 static void usa28_glocont_callback(struct urb *urb) 543 { 544 } 545 546 547 static void usa49_glocont_callback(struct urb *urb) 548 { 549 struct usb_serial *serial; 550 struct usb_serial_port *port; 551 struct keyspan_port_private *p_priv; 552 int i; 553 554 serial = urb->context; 555 for (i = 0; i < serial->num_ports; ++i) { 556 port = serial->port[i]; 557 p_priv = usb_get_serial_port_data(port); 558 559 if (p_priv->resend_cont) { 560 dev_dbg(&port->dev, "%s - sending setup\n", __func__); 561 keyspan_usa49_send_setup(serial, port, 562 p_priv->resend_cont - 1); 563 break; 564 } 565 } 566 } 567 568 /* This is actually called glostat in the Keyspan 569 doco */ 570 static void usa49_instat_callback(struct urb *urb) 571 { 572 int err; 573 unsigned char *data = urb->transfer_buffer; 574 struct keyspan_usa49_portStatusMessage *msg; 575 struct usb_serial *serial; 576 struct usb_serial_port *port; 577 struct keyspan_port_private *p_priv; 578 int old_dcd_state; 579 int status = urb->status; 580 581 serial = urb->context; 582 583 if (status) { 584 dev_dbg(&urb->dev->dev, "%s - nonzero status: %x\n", __func__, status); 585 return; 586 } 587 588 if (urb->actual_length != 589 sizeof(struct keyspan_usa49_portStatusMessage)) { 590 dev_dbg(&urb->dev->dev, "%s - bad length %d\n", __func__, urb->actual_length); 591 goto exit; 592 } 593 594 msg = (struct keyspan_usa49_portStatusMessage *)data; 595 596 /* Check port number from message and retrieve private data */ 597 if (msg->portNumber >= serial->num_ports) { 598 dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n", 599 __func__, msg->portNumber); 600 goto exit; 601 } 602 port = serial->port[msg->portNumber]; 603 p_priv = usb_get_serial_port_data(port); 604 605 /* Update handshaking pin state information */ 606 old_dcd_state = p_priv->dcd_state; 607 p_priv->cts_state = ((msg->cts) ? 1 : 0); 608 p_priv->dsr_state = ((msg->dsr) ? 1 : 0); 609 p_priv->dcd_state = ((msg->dcd) ? 1 : 0); 610 p_priv->ri_state = ((msg->ri) ? 1 : 0); 611 612 if (old_dcd_state != p_priv->dcd_state && old_dcd_state) 613 tty_port_tty_hangup(&port->port, true); 614 615 /* Resubmit urb so we continue receiving */ 616 err = usb_submit_urb(urb, GFP_ATOMIC); 617 if (err != 0) 618 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err); 619 exit: ; 620 } 621 622 static void usa49_inack_callback(struct urb *urb) 623 { 624 } 625 626 static void usa49_indat_callback(struct urb *urb) 627 { 628 int i, err; 629 int endpoint; 630 struct usb_serial_port *port; 631 unsigned char *data = urb->transfer_buffer; 632 int status = urb->status; 633 634 endpoint = usb_pipeendpoint(urb->pipe); 635 636 if (status) { 637 dev_dbg(&urb->dev->dev, "%s - nonzero status: %x on endpoint %d.\n", 638 __func__, status, endpoint); 639 return; 640 } 641 642 port = urb->context; 643 if (urb->actual_length) { 644 /* 0x80 bit is error flag */ 645 if ((data[0] & 0x80) == 0) { 646 /* no error on any byte */ 647 tty_insert_flip_string(&port->port, data + 1, 648 urb->actual_length - 1); 649 } else { 650 /* some bytes had errors, every byte has status */ 651 for (i = 0; i + 1 < urb->actual_length; i += 2) { 652 int stat = data[i], flag = 0; 653 if (stat & RXERROR_OVERRUN) 654 flag |= TTY_OVERRUN; 655 if (stat & RXERROR_FRAMING) 656 flag |= TTY_FRAME; 657 if (stat & RXERROR_PARITY) 658 flag |= TTY_PARITY; 659 /* XXX should handle break (0x10) */ 660 tty_insert_flip_char(&port->port, data[i+1], 661 flag); 662 } 663 } 664 tty_flip_buffer_push(&port->port); 665 } 666 667 /* Resubmit urb so we continue receiving */ 668 err = usb_submit_urb(urb, GFP_ATOMIC); 669 if (err != 0) 670 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err); 671 } 672 673 static void usa49wg_indat_callback(struct urb *urb) 674 { 675 int i, len, x, err; 676 struct usb_serial *serial; 677 struct usb_serial_port *port; 678 unsigned char *data = urb->transfer_buffer; 679 int status = urb->status; 680 681 serial = urb->context; 682 683 if (status) { 684 dev_dbg(&urb->dev->dev, "%s - nonzero status: %x\n", __func__, status); 685 return; 686 } 687 688 /* inbound data is in the form P#, len, status, data */ 689 i = 0; 690 len = 0; 691 692 while (i < urb->actual_length) { 693 694 /* Check port number from message */ 695 if (data[i] >= serial->num_ports) { 696 dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n", 697 __func__, data[i]); 698 return; 699 } 700 port = serial->port[data[i++]]; 701 len = data[i++]; 702 703 /* 0x80 bit is error flag */ 704 if ((data[i] & 0x80) == 0) { 705 /* no error on any byte */ 706 i++; 707 for (x = 1; x < len && i < urb->actual_length; ++x) 708 tty_insert_flip_char(&port->port, 709 data[i++], 0); 710 } else { 711 /* 712 * some bytes had errors, every byte has status 713 */ 714 for (x = 0; x + 1 < len && 715 i + 1 < urb->actual_length; x += 2) { 716 int stat = data[i], flag = 0; 717 718 if (stat & RXERROR_OVERRUN) 719 flag |= TTY_OVERRUN; 720 if (stat & RXERROR_FRAMING) 721 flag |= TTY_FRAME; 722 if (stat & RXERROR_PARITY) 723 flag |= TTY_PARITY; 724 /* XXX should handle break (0x10) */ 725 tty_insert_flip_char(&port->port, data[i+1], 726 flag); 727 i += 2; 728 } 729 } 730 tty_flip_buffer_push(&port->port); 731 } 732 733 /* Resubmit urb so we continue receiving */ 734 err = usb_submit_urb(urb, GFP_ATOMIC); 735 if (err != 0) 736 dev_dbg(&urb->dev->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err); 737 } 738 739 /* not used, usa-49 doesn't have per-port control endpoints */ 740 static void usa49_outcont_callback(struct urb *urb) 741 { 742 } 743 744 static void usa90_indat_callback(struct urb *urb) 745 { 746 int i, err; 747 int endpoint; 748 struct usb_serial_port *port; 749 struct keyspan_port_private *p_priv; 750 unsigned char *data = urb->transfer_buffer; 751 int status = urb->status; 752 753 endpoint = usb_pipeendpoint(urb->pipe); 754 755 if (status) { 756 dev_dbg(&urb->dev->dev, "%s - nonzero status: %x on endpoint %d.\n", 757 __func__, status, endpoint); 758 return; 759 } 760 761 port = urb->context; 762 p_priv = usb_get_serial_port_data(port); 763 764 if (urb->actual_length) { 765 /* if current mode is DMA, looks like usa28 format 766 otherwise looks like usa26 data format */ 767 768 if (p_priv->baud > 57600) 769 tty_insert_flip_string(&port->port, data, 770 urb->actual_length); 771 else { 772 /* 0x80 bit is error flag */ 773 if ((data[0] & 0x80) == 0) { 774 /* no errors on individual bytes, only 775 possible overrun err*/ 776 if (data[0] & RXERROR_OVERRUN) 777 err = TTY_OVERRUN; 778 else 779 err = 0; 780 for (i = 1; i < urb->actual_length ; ++i) 781 tty_insert_flip_char(&port->port, 782 data[i], err); 783 } else { 784 /* some bytes had errors, every byte has status */ 785 dev_dbg(&port->dev, "%s - RX error!!!!\n", __func__); 786 for (i = 0; i + 1 < urb->actual_length; i += 2) { 787 int stat = data[i], flag = 0; 788 if (stat & RXERROR_OVERRUN) 789 flag |= TTY_OVERRUN; 790 if (stat & RXERROR_FRAMING) 791 flag |= TTY_FRAME; 792 if (stat & RXERROR_PARITY) 793 flag |= TTY_PARITY; 794 /* XXX should handle break (0x10) */ 795 tty_insert_flip_char(&port->port, 796 data[i+1], flag); 797 } 798 } 799 } 800 tty_flip_buffer_push(&port->port); 801 } 802 803 /* Resubmit urb so we continue receiving */ 804 err = usb_submit_urb(urb, GFP_ATOMIC); 805 if (err != 0) 806 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err); 807 } 808 809 810 static void usa90_instat_callback(struct urb *urb) 811 { 812 unsigned char *data = urb->transfer_buffer; 813 struct keyspan_usa90_portStatusMessage *msg; 814 struct usb_serial *serial; 815 struct usb_serial_port *port; 816 struct keyspan_port_private *p_priv; 817 int old_dcd_state, err; 818 int status = urb->status; 819 820 serial = urb->context; 821 822 if (status) { 823 dev_dbg(&urb->dev->dev, "%s - nonzero status: %x\n", __func__, status); 824 return; 825 } 826 if (urb->actual_length < 14) { 827 dev_dbg(&urb->dev->dev, "%s - %d byte report??\n", __func__, urb->actual_length); 828 goto exit; 829 } 830 831 msg = (struct keyspan_usa90_portStatusMessage *)data; 832 833 /* Now do something useful with the data */ 834 835 port = serial->port[0]; 836 p_priv = usb_get_serial_port_data(port); 837 838 /* Update handshaking pin state information */ 839 old_dcd_state = p_priv->dcd_state; 840 p_priv->cts_state = ((msg->cts) ? 1 : 0); 841 p_priv->dsr_state = ((msg->dsr) ? 1 : 0); 842 p_priv->dcd_state = ((msg->dcd) ? 1 : 0); 843 p_priv->ri_state = ((msg->ri) ? 1 : 0); 844 845 if (old_dcd_state != p_priv->dcd_state && old_dcd_state) 846 tty_port_tty_hangup(&port->port, true); 847 848 /* Resubmit urb so we continue receiving */ 849 err = usb_submit_urb(urb, GFP_ATOMIC); 850 if (err != 0) 851 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err); 852 exit: 853 ; 854 } 855 856 static void usa90_outcont_callback(struct urb *urb) 857 { 858 struct usb_serial_port *port; 859 struct keyspan_port_private *p_priv; 860 861 port = urb->context; 862 p_priv = usb_get_serial_port_data(port); 863 864 if (p_priv->resend_cont) { 865 dev_dbg(&urb->dev->dev, "%s - sending setup\n", __func__); 866 keyspan_usa90_send_setup(port->serial, port, 867 p_priv->resend_cont - 1); 868 } 869 } 870 871 /* Status messages from the 28xg */ 872 static void usa67_instat_callback(struct urb *urb) 873 { 874 int err; 875 unsigned char *data = urb->transfer_buffer; 876 struct keyspan_usa67_portStatusMessage *msg; 877 struct usb_serial *serial; 878 struct usb_serial_port *port; 879 struct keyspan_port_private *p_priv; 880 int old_dcd_state; 881 int status = urb->status; 882 883 serial = urb->context; 884 885 if (status) { 886 dev_dbg(&urb->dev->dev, "%s - nonzero status: %x\n", __func__, status); 887 return; 888 } 889 890 if (urb->actual_length != 891 sizeof(struct keyspan_usa67_portStatusMessage)) { 892 dev_dbg(&urb->dev->dev, "%s - bad length %d\n", __func__, urb->actual_length); 893 return; 894 } 895 896 897 /* Now do something useful with the data */ 898 msg = (struct keyspan_usa67_portStatusMessage *)data; 899 900 /* Check port number from message and retrieve private data */ 901 if (msg->port >= serial->num_ports) { 902 dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n", __func__, msg->port); 903 return; 904 } 905 906 port = serial->port[msg->port]; 907 p_priv = usb_get_serial_port_data(port); 908 909 /* Update handshaking pin state information */ 910 old_dcd_state = p_priv->dcd_state; 911 p_priv->cts_state = ((msg->hskia_cts) ? 1 : 0); 912 p_priv->dcd_state = ((msg->gpia_dcd) ? 1 : 0); 913 914 if (old_dcd_state != p_priv->dcd_state && old_dcd_state) 915 tty_port_tty_hangup(&port->port, true); 916 917 /* Resubmit urb so we continue receiving */ 918 err = usb_submit_urb(urb, GFP_ATOMIC); 919 if (err != 0) 920 dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err); 921 } 922 923 static void usa67_glocont_callback(struct urb *urb) 924 { 925 struct usb_serial *serial; 926 struct usb_serial_port *port; 927 struct keyspan_port_private *p_priv; 928 int i; 929 930 serial = urb->context; 931 for (i = 0; i < serial->num_ports; ++i) { 932 port = serial->port[i]; 933 p_priv = usb_get_serial_port_data(port); 934 935 if (p_priv->resend_cont) { 936 dev_dbg(&port->dev, "%s - sending setup\n", __func__); 937 keyspan_usa67_send_setup(serial, port, 938 p_priv->resend_cont - 1); 939 break; 940 } 941 } 942 } 943 944 static int keyspan_write_room(struct tty_struct *tty) 945 { 946 struct usb_serial_port *port = tty->driver_data; 947 struct keyspan_port_private *p_priv; 948 const struct keyspan_device_details *d_details; 949 int flip; 950 int data_len; 951 struct urb *this_urb; 952 953 p_priv = usb_get_serial_port_data(port); 954 d_details = p_priv->device_details; 955 956 /* FIXME: locking */ 957 if (d_details->msg_format == msg_usa90) 958 data_len = 64; 959 else 960 data_len = 63; 961 962 flip = p_priv->out_flip; 963 964 /* Check both endpoints to see if any are available. */ 965 this_urb = p_priv->out_urbs[flip]; 966 if (this_urb != NULL) { 967 if (this_urb->status != -EINPROGRESS) 968 return data_len; 969 flip = (flip + 1) & d_details->outdat_endp_flip; 970 this_urb = p_priv->out_urbs[flip]; 971 if (this_urb != NULL) { 972 if (this_urb->status != -EINPROGRESS) 973 return data_len; 974 } 975 } 976 return 0; 977 } 978 979 980 static int keyspan_open(struct tty_struct *tty, struct usb_serial_port *port) 981 { 982 struct keyspan_port_private *p_priv; 983 const struct keyspan_device_details *d_details; 984 int i, err; 985 int baud_rate, device_port; 986 struct urb *urb; 987 unsigned int cflag = 0; 988 989 p_priv = usb_get_serial_port_data(port); 990 d_details = p_priv->device_details; 991 992 /* Set some sane defaults */ 993 p_priv->rts_state = 1; 994 p_priv->dtr_state = 1; 995 p_priv->baud = 9600; 996 997 /* force baud and lcr to be set on open */ 998 p_priv->old_baud = 0; 999 p_priv->old_cflag = 0; 1000 1001 p_priv->out_flip = 0; 1002 p_priv->in_flip = 0; 1003 1004 /* Reset low level data toggle and start reading from endpoints */ 1005 for (i = 0; i < 2; i++) { 1006 urb = p_priv->in_urbs[i]; 1007 if (urb == NULL) 1008 continue; 1009 1010 /* make sure endpoint data toggle is synchronized 1011 with the device */ 1012 usb_clear_halt(urb->dev, urb->pipe); 1013 err = usb_submit_urb(urb, GFP_KERNEL); 1014 if (err != 0) 1015 dev_dbg(&port->dev, "%s - submit urb %d failed (%d)\n", __func__, i, err); 1016 } 1017 1018 /* Reset low level data toggle on out endpoints */ 1019 for (i = 0; i < 2; i++) { 1020 urb = p_priv->out_urbs[i]; 1021 if (urb == NULL) 1022 continue; 1023 /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), 1024 usb_pipeout(urb->pipe), 0); */ 1025 } 1026 1027 /* get the terminal config for the setup message now so we don't 1028 * need to send 2 of them */ 1029 1030 device_port = port->port_number; 1031 if (tty) { 1032 cflag = tty->termios.c_cflag; 1033 /* Baud rate calculation takes baud rate as an integer 1034 so other rates can be generated if desired. */ 1035 baud_rate = tty_get_baud_rate(tty); 1036 /* If no match or invalid, leave as default */ 1037 if (baud_rate >= 0 1038 && d_details->calculate_baud_rate(port, baud_rate, d_details->baudclk, 1039 NULL, NULL, NULL, device_port) == KEYSPAN_BAUD_RATE_OK) { 1040 p_priv->baud = baud_rate; 1041 } 1042 } 1043 /* set CTS/RTS handshake etc. */ 1044 p_priv->cflag = cflag; 1045 p_priv->flow_control = (cflag & CRTSCTS) ? flow_cts : flow_none; 1046 1047 keyspan_send_setup(port, 1); 1048 /* mdelay(100); */ 1049 /* keyspan_set_termios(port, NULL); */ 1050 1051 return 0; 1052 } 1053 1054 static inline void stop_urb(struct urb *urb) 1055 { 1056 if (urb && urb->status == -EINPROGRESS) 1057 usb_kill_urb(urb); 1058 } 1059 1060 static void keyspan_dtr_rts(struct usb_serial_port *port, int on) 1061 { 1062 struct keyspan_port_private *p_priv = usb_get_serial_port_data(port); 1063 1064 p_priv->rts_state = on; 1065 p_priv->dtr_state = on; 1066 keyspan_send_setup(port, 0); 1067 } 1068 1069 static void keyspan_close(struct usb_serial_port *port) 1070 { 1071 int i; 1072 struct keyspan_port_private *p_priv; 1073 1074 p_priv = usb_get_serial_port_data(port); 1075 1076 p_priv->rts_state = 0; 1077 p_priv->dtr_state = 0; 1078 1079 keyspan_send_setup(port, 2); 1080 /* pilot-xfer seems to work best with this delay */ 1081 mdelay(100); 1082 1083 p_priv->out_flip = 0; 1084 p_priv->in_flip = 0; 1085 1086 stop_urb(p_priv->inack_urb); 1087 for (i = 0; i < 2; i++) { 1088 stop_urb(p_priv->in_urbs[i]); 1089 stop_urb(p_priv->out_urbs[i]); 1090 } 1091 } 1092 1093 /* download the firmware to a pre-renumeration device */ 1094 static int keyspan_fake_startup(struct usb_serial *serial) 1095 { 1096 char *fw_name; 1097 1098 dev_dbg(&serial->dev->dev, "Keyspan startup version %04x product %04x\n", 1099 le16_to_cpu(serial->dev->descriptor.bcdDevice), 1100 le16_to_cpu(serial->dev->descriptor.idProduct)); 1101 1102 if ((le16_to_cpu(serial->dev->descriptor.bcdDevice) & 0x8000) 1103 != 0x8000) { 1104 dev_dbg(&serial->dev->dev, "Firmware already loaded. Quitting.\n"); 1105 return 1; 1106 } 1107 1108 /* Select firmware image on the basis of idProduct */ 1109 switch (le16_to_cpu(serial->dev->descriptor.idProduct)) { 1110 case keyspan_usa28_pre_product_id: 1111 fw_name = "keyspan/usa28.fw"; 1112 break; 1113 1114 case keyspan_usa28x_pre_product_id: 1115 fw_name = "keyspan/usa28x.fw"; 1116 break; 1117 1118 case keyspan_usa28xa_pre_product_id: 1119 fw_name = "keyspan/usa28xa.fw"; 1120 break; 1121 1122 case keyspan_usa28xb_pre_product_id: 1123 fw_name = "keyspan/usa28xb.fw"; 1124 break; 1125 1126 case keyspan_usa19_pre_product_id: 1127 fw_name = "keyspan/usa19.fw"; 1128 break; 1129 1130 case keyspan_usa19qi_pre_product_id: 1131 fw_name = "keyspan/usa19qi.fw"; 1132 break; 1133 1134 case keyspan_mpr_pre_product_id: 1135 fw_name = "keyspan/mpr.fw"; 1136 break; 1137 1138 case keyspan_usa19qw_pre_product_id: 1139 fw_name = "keyspan/usa19qw.fw"; 1140 break; 1141 1142 case keyspan_usa18x_pre_product_id: 1143 fw_name = "keyspan/usa18x.fw"; 1144 break; 1145 1146 case keyspan_usa19w_pre_product_id: 1147 fw_name = "keyspan/usa19w.fw"; 1148 break; 1149 1150 case keyspan_usa49w_pre_product_id: 1151 fw_name = "keyspan/usa49w.fw"; 1152 break; 1153 1154 case keyspan_usa49wlc_pre_product_id: 1155 fw_name = "keyspan/usa49wlc.fw"; 1156 break; 1157 1158 default: 1159 dev_err(&serial->dev->dev, "Unknown product ID (%04x)\n", 1160 le16_to_cpu(serial->dev->descriptor.idProduct)); 1161 return 1; 1162 } 1163 1164 dev_dbg(&serial->dev->dev, "Uploading Keyspan %s firmware.\n", fw_name); 1165 1166 if (ezusb_fx1_ihex_firmware_download(serial->dev, fw_name) < 0) { 1167 dev_err(&serial->dev->dev, "failed to load firmware \"%s\"\n", 1168 fw_name); 1169 return -ENOENT; 1170 } 1171 1172 /* after downloading firmware Renumeration will occur in a 1173 moment and the new device will bind to the real driver */ 1174 1175 /* we don't want this device to have a driver assigned to it. */ 1176 return 1; 1177 } 1178 1179 /* Helper functions used by keyspan_setup_urbs */ 1180 static struct usb_endpoint_descriptor const *find_ep(struct usb_serial const *serial, 1181 int endpoint) 1182 { 1183 struct usb_host_interface *iface_desc; 1184 struct usb_endpoint_descriptor *ep; 1185 int i; 1186 1187 iface_desc = serial->interface->cur_altsetting; 1188 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { 1189 ep = &iface_desc->endpoint[i].desc; 1190 if (ep->bEndpointAddress == endpoint) 1191 return ep; 1192 } 1193 dev_warn(&serial->interface->dev, "found no endpoint descriptor for " 1194 "endpoint %x\n", endpoint); 1195 return NULL; 1196 } 1197 1198 static struct urb *keyspan_setup_urb(struct usb_serial *serial, int endpoint, 1199 int dir, void *ctx, char *buf, int len, 1200 void (*callback)(struct urb *)) 1201 { 1202 struct urb *urb; 1203 struct usb_endpoint_descriptor const *ep_desc; 1204 char const *ep_type_name; 1205 1206 if (endpoint == -1) 1207 return NULL; /* endpoint not needed */ 1208 1209 dev_dbg(&serial->interface->dev, "%s - alloc for endpoint %d.\n", __func__, endpoint); 1210 urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */ 1211 if (!urb) 1212 return NULL; 1213 1214 if (endpoint == 0) { 1215 /* control EP filled in when used */ 1216 return urb; 1217 } 1218 1219 ep_desc = find_ep(serial, endpoint); 1220 if (!ep_desc) { 1221 /* leak the urb, something's wrong and the callers don't care */ 1222 return urb; 1223 } 1224 if (usb_endpoint_xfer_int(ep_desc)) { 1225 ep_type_name = "INT"; 1226 usb_fill_int_urb(urb, serial->dev, 1227 usb_sndintpipe(serial->dev, endpoint) | dir, 1228 buf, len, callback, ctx, 1229 ep_desc->bInterval); 1230 } else if (usb_endpoint_xfer_bulk(ep_desc)) { 1231 ep_type_name = "BULK"; 1232 usb_fill_bulk_urb(urb, serial->dev, 1233 usb_sndbulkpipe(serial->dev, endpoint) | dir, 1234 buf, len, callback, ctx); 1235 } else { 1236 dev_warn(&serial->interface->dev, 1237 "unsupported endpoint type %x\n", 1238 usb_endpoint_type(ep_desc)); 1239 usb_free_urb(urb); 1240 return NULL; 1241 } 1242 1243 dev_dbg(&serial->interface->dev, "%s - using urb %p for %s endpoint %x\n", 1244 __func__, urb, ep_type_name, endpoint); 1245 return urb; 1246 } 1247 1248 static struct callbacks { 1249 void (*instat_callback)(struct urb *); 1250 void (*glocont_callback)(struct urb *); 1251 void (*indat_callback)(struct urb *); 1252 void (*outdat_callback)(struct urb *); 1253 void (*inack_callback)(struct urb *); 1254 void (*outcont_callback)(struct urb *); 1255 } keyspan_callbacks[] = { 1256 { 1257 /* msg_usa26 callbacks */ 1258 .instat_callback = usa26_instat_callback, 1259 .glocont_callback = usa26_glocont_callback, 1260 .indat_callback = usa26_indat_callback, 1261 .outdat_callback = usa2x_outdat_callback, 1262 .inack_callback = usa26_inack_callback, 1263 .outcont_callback = usa26_outcont_callback, 1264 }, { 1265 /* msg_usa28 callbacks */ 1266 .instat_callback = usa28_instat_callback, 1267 .glocont_callback = usa28_glocont_callback, 1268 .indat_callback = usa28_indat_callback, 1269 .outdat_callback = usa2x_outdat_callback, 1270 .inack_callback = usa28_inack_callback, 1271 .outcont_callback = usa28_outcont_callback, 1272 }, { 1273 /* msg_usa49 callbacks */ 1274 .instat_callback = usa49_instat_callback, 1275 .glocont_callback = usa49_glocont_callback, 1276 .indat_callback = usa49_indat_callback, 1277 .outdat_callback = usa2x_outdat_callback, 1278 .inack_callback = usa49_inack_callback, 1279 .outcont_callback = usa49_outcont_callback, 1280 }, { 1281 /* msg_usa90 callbacks */ 1282 .instat_callback = usa90_instat_callback, 1283 .glocont_callback = usa28_glocont_callback, 1284 .indat_callback = usa90_indat_callback, 1285 .outdat_callback = usa2x_outdat_callback, 1286 .inack_callback = usa28_inack_callback, 1287 .outcont_callback = usa90_outcont_callback, 1288 }, { 1289 /* msg_usa67 callbacks */ 1290 .instat_callback = usa67_instat_callback, 1291 .glocont_callback = usa67_glocont_callback, 1292 .indat_callback = usa26_indat_callback, 1293 .outdat_callback = usa2x_outdat_callback, 1294 .inack_callback = usa26_inack_callback, 1295 .outcont_callback = usa26_outcont_callback, 1296 } 1297 }; 1298 1299 /* Generic setup urbs function that uses 1300 data in device_details */ 1301 static void keyspan_setup_urbs(struct usb_serial *serial) 1302 { 1303 struct keyspan_serial_private *s_priv; 1304 const struct keyspan_device_details *d_details; 1305 struct callbacks *cback; 1306 1307 s_priv = usb_get_serial_data(serial); 1308 d_details = s_priv->device_details; 1309 1310 /* Setup values for the various callback routines */ 1311 cback = &keyspan_callbacks[d_details->msg_format]; 1312 1313 /* Allocate and set up urbs for each one that is in use, 1314 starting with instat endpoints */ 1315 s_priv->instat_urb = keyspan_setup_urb 1316 (serial, d_details->instat_endpoint, USB_DIR_IN, 1317 serial, s_priv->instat_buf, INSTAT_BUFLEN, 1318 cback->instat_callback); 1319 1320 s_priv->indat_urb = keyspan_setup_urb 1321 (serial, d_details->indat_endpoint, USB_DIR_IN, 1322 serial, s_priv->indat_buf, INDAT49W_BUFLEN, 1323 usa49wg_indat_callback); 1324 1325 s_priv->glocont_urb = keyspan_setup_urb 1326 (serial, d_details->glocont_endpoint, USB_DIR_OUT, 1327 serial, s_priv->glocont_buf, GLOCONT_BUFLEN, 1328 cback->glocont_callback); 1329 } 1330 1331 /* usa19 function doesn't require prescaler */ 1332 static int keyspan_usa19_calc_baud(struct usb_serial_port *port, 1333 u32 baud_rate, u32 baudclk, u8 *rate_hi, 1334 u8 *rate_low, u8 *prescaler, int portnum) 1335 { 1336 u32 b16, /* baud rate times 16 (actual rate used internally) */ 1337 div, /* divisor */ 1338 cnt; /* inverse of divisor (programmed into 8051) */ 1339 1340 dev_dbg(&port->dev, "%s - %d.\n", __func__, baud_rate); 1341 1342 /* prevent divide by zero... */ 1343 b16 = baud_rate * 16L; 1344 if (b16 == 0) 1345 return KEYSPAN_INVALID_BAUD_RATE; 1346 /* Any "standard" rate over 57k6 is marginal on the USA-19 1347 as we run out of divisor resolution. */ 1348 if (baud_rate > 57600) 1349 return KEYSPAN_INVALID_BAUD_RATE; 1350 1351 /* calculate the divisor and the counter (its inverse) */ 1352 div = baudclk / b16; 1353 if (div == 0) 1354 return KEYSPAN_INVALID_BAUD_RATE; 1355 else 1356 cnt = 0 - div; 1357 1358 if (div > 0xffff) 1359 return KEYSPAN_INVALID_BAUD_RATE; 1360 1361 /* return the counter values if non-null */ 1362 if (rate_low) 1363 *rate_low = (u8) (cnt & 0xff); 1364 if (rate_hi) 1365 *rate_hi = (u8) ((cnt >> 8) & 0xff); 1366 if (rate_low && rate_hi) 1367 dev_dbg(&port->dev, "%s - %d %02x %02x.\n", 1368 __func__, baud_rate, *rate_hi, *rate_low); 1369 return KEYSPAN_BAUD_RATE_OK; 1370 } 1371 1372 /* usa19hs function doesn't require prescaler */ 1373 static int keyspan_usa19hs_calc_baud(struct usb_serial_port *port, 1374 u32 baud_rate, u32 baudclk, u8 *rate_hi, 1375 u8 *rate_low, u8 *prescaler, int portnum) 1376 { 1377 u32 b16, /* baud rate times 16 (actual rate used internally) */ 1378 div; /* divisor */ 1379 1380 dev_dbg(&port->dev, "%s - %d.\n", __func__, baud_rate); 1381 1382 /* prevent divide by zero... */ 1383 b16 = baud_rate * 16L; 1384 if (b16 == 0) 1385 return KEYSPAN_INVALID_BAUD_RATE; 1386 1387 /* calculate the divisor */ 1388 div = baudclk / b16; 1389 if (div == 0) 1390 return KEYSPAN_INVALID_BAUD_RATE; 1391 1392 if (div > 0xffff) 1393 return KEYSPAN_INVALID_BAUD_RATE; 1394 1395 /* return the counter values if non-null */ 1396 if (rate_low) 1397 *rate_low = (u8) (div & 0xff); 1398 1399 if (rate_hi) 1400 *rate_hi = (u8) ((div >> 8) & 0xff); 1401 1402 if (rate_low && rate_hi) 1403 dev_dbg(&port->dev, "%s - %d %02x %02x.\n", 1404 __func__, baud_rate, *rate_hi, *rate_low); 1405 1406 return KEYSPAN_BAUD_RATE_OK; 1407 } 1408 1409 static int keyspan_usa19w_calc_baud(struct usb_serial_port *port, 1410 u32 baud_rate, u32 baudclk, u8 *rate_hi, 1411 u8 *rate_low, u8 *prescaler, int portnum) 1412 { 1413 u32 b16, /* baud rate times 16 (actual rate used internally) */ 1414 clk, /* clock with 13/8 prescaler */ 1415 div, /* divisor using 13/8 prescaler */ 1416 res, /* resulting baud rate using 13/8 prescaler */ 1417 diff, /* error using 13/8 prescaler */ 1418 smallest_diff; 1419 u8 best_prescaler; 1420 int i; 1421 1422 dev_dbg(&port->dev, "%s - %d.\n", __func__, baud_rate); 1423 1424 /* prevent divide by zero */ 1425 b16 = baud_rate * 16L; 1426 if (b16 == 0) 1427 return KEYSPAN_INVALID_BAUD_RATE; 1428 1429 /* Calculate prescaler by trying them all and looking 1430 for best fit */ 1431 1432 /* start with largest possible difference */ 1433 smallest_diff = 0xffffffff; 1434 1435 /* 0 is an invalid prescaler, used as a flag */ 1436 best_prescaler = 0; 1437 1438 for (i = 8; i <= 0xff; ++i) { 1439 clk = (baudclk * 8) / (u32) i; 1440 1441 div = clk / b16; 1442 if (div == 0) 1443 continue; 1444 1445 res = clk / div; 1446 diff = (res > b16) ? (res-b16) : (b16-res); 1447 1448 if (diff < smallest_diff) { 1449 best_prescaler = i; 1450 smallest_diff = diff; 1451 } 1452 } 1453 1454 if (best_prescaler == 0) 1455 return KEYSPAN_INVALID_BAUD_RATE; 1456 1457 clk = (baudclk * 8) / (u32) best_prescaler; 1458 div = clk / b16; 1459 1460 /* return the divisor and prescaler if non-null */ 1461 if (rate_low) 1462 *rate_low = (u8) (div & 0xff); 1463 if (rate_hi) 1464 *rate_hi = (u8) ((div >> 8) & 0xff); 1465 if (prescaler) { 1466 *prescaler = best_prescaler; 1467 /* dev_dbg(&port->dev, "%s - %d %d\n", __func__, *prescaler, div); */ 1468 } 1469 return KEYSPAN_BAUD_RATE_OK; 1470 } 1471 1472 /* USA-28 supports different maximum baud rates on each port */ 1473 static int keyspan_usa28_calc_baud(struct usb_serial_port *port, 1474 u32 baud_rate, u32 baudclk, u8 *rate_hi, 1475 u8 *rate_low, u8 *prescaler, int portnum) 1476 { 1477 u32 b16, /* baud rate times 16 (actual rate used internally) */ 1478 div, /* divisor */ 1479 cnt; /* inverse of divisor (programmed into 8051) */ 1480 1481 dev_dbg(&port->dev, "%s - %d.\n", __func__, baud_rate); 1482 1483 /* prevent divide by zero */ 1484 b16 = baud_rate * 16L; 1485 if (b16 == 0) 1486 return KEYSPAN_INVALID_BAUD_RATE; 1487 1488 /* calculate the divisor and the counter (its inverse) */ 1489 div = KEYSPAN_USA28_BAUDCLK / b16; 1490 if (div == 0) 1491 return KEYSPAN_INVALID_BAUD_RATE; 1492 else 1493 cnt = 0 - div; 1494 1495 /* check for out of range, based on portnum, 1496 and return result */ 1497 if (portnum == 0) { 1498 if (div > 0xffff) 1499 return KEYSPAN_INVALID_BAUD_RATE; 1500 } else { 1501 if (portnum == 1) { 1502 if (div > 0xff) 1503 return KEYSPAN_INVALID_BAUD_RATE; 1504 } else 1505 return KEYSPAN_INVALID_BAUD_RATE; 1506 } 1507 1508 /* return the counter values if not NULL 1509 (port 1 will ignore retHi) */ 1510 if (rate_low) 1511 *rate_low = (u8) (cnt & 0xff); 1512 if (rate_hi) 1513 *rate_hi = (u8) ((cnt >> 8) & 0xff); 1514 dev_dbg(&port->dev, "%s - %d OK.\n", __func__, baud_rate); 1515 return KEYSPAN_BAUD_RATE_OK; 1516 } 1517 1518 static int keyspan_usa26_send_setup(struct usb_serial *serial, 1519 struct usb_serial_port *port, 1520 int reset_port) 1521 { 1522 struct keyspan_usa26_portControlMessage msg; 1523 struct keyspan_serial_private *s_priv; 1524 struct keyspan_port_private *p_priv; 1525 const struct keyspan_device_details *d_details; 1526 struct urb *this_urb; 1527 int device_port, err; 1528 1529 dev_dbg(&port->dev, "%s reset=%d\n", __func__, reset_port); 1530 1531 s_priv = usb_get_serial_data(serial); 1532 p_priv = usb_get_serial_port_data(port); 1533 d_details = s_priv->device_details; 1534 device_port = port->port_number; 1535 1536 this_urb = p_priv->outcont_urb; 1537 1538 dev_dbg(&port->dev, "%s - endpoint %d\n", __func__, usb_pipeendpoint(this_urb->pipe)); 1539 1540 /* Make sure we have an urb then send the message */ 1541 if (this_urb == NULL) { 1542 dev_dbg(&port->dev, "%s - oops no urb.\n", __func__); 1543 return -1; 1544 } 1545 1546 /* Save reset port val for resend. 1547 Don't overwrite resend for open/close condition. */ 1548 if ((reset_port + 1) > p_priv->resend_cont) 1549 p_priv->resend_cont = reset_port + 1; 1550 if (this_urb->status == -EINPROGRESS) { 1551 /* dev_dbg(&port->dev, "%s - already writing\n", __func__); */ 1552 mdelay(5); 1553 return -1; 1554 } 1555 1556 memset(&msg, 0, sizeof(struct keyspan_usa26_portControlMessage)); 1557 1558 /* Only set baud rate if it's changed */ 1559 if (p_priv->old_baud != p_priv->baud) { 1560 p_priv->old_baud = p_priv->baud; 1561 msg.setClocking = 0xff; 1562 if (d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk, 1563 &msg.baudHi, &msg.baudLo, &msg.prescaler, 1564 device_port) == KEYSPAN_INVALID_BAUD_RATE) { 1565 dev_dbg(&port->dev, "%s - Invalid baud rate %d requested, using 9600.\n", 1566 __func__, p_priv->baud); 1567 msg.baudLo = 0; 1568 msg.baudHi = 125; /* Values for 9600 baud */ 1569 msg.prescaler = 10; 1570 } 1571 msg.setPrescaler = 0xff; 1572 } 1573 1574 msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1; 1575 switch (p_priv->cflag & CSIZE) { 1576 case CS5: 1577 msg.lcr |= USA_DATABITS_5; 1578 break; 1579 case CS6: 1580 msg.lcr |= USA_DATABITS_6; 1581 break; 1582 case CS7: 1583 msg.lcr |= USA_DATABITS_7; 1584 break; 1585 case CS8: 1586 msg.lcr |= USA_DATABITS_8; 1587 break; 1588 } 1589 if (p_priv->cflag & PARENB) { 1590 /* note USA_PARITY_NONE == 0 */ 1591 msg.lcr |= (p_priv->cflag & PARODD) ? 1592 USA_PARITY_ODD : USA_PARITY_EVEN; 1593 } 1594 msg.setLcr = 0xff; 1595 1596 msg.ctsFlowControl = (p_priv->flow_control == flow_cts); 1597 msg.xonFlowControl = 0; 1598 msg.setFlowControl = 0xff; 1599 msg.forwardingLength = 16; 1600 msg.xonChar = 17; 1601 msg.xoffChar = 19; 1602 1603 /* Opening port */ 1604 if (reset_port == 1) { 1605 msg._txOn = 1; 1606 msg._txOff = 0; 1607 msg.txFlush = 0; 1608 msg.txBreak = 0; 1609 msg.rxOn = 1; 1610 msg.rxOff = 0; 1611 msg.rxFlush = 1; 1612 msg.rxForward = 0; 1613 msg.returnStatus = 0; 1614 msg.resetDataToggle = 0xff; 1615 } 1616 1617 /* Closing port */ 1618 else if (reset_port == 2) { 1619 msg._txOn = 0; 1620 msg._txOff = 1; 1621 msg.txFlush = 0; 1622 msg.txBreak = 0; 1623 msg.rxOn = 0; 1624 msg.rxOff = 1; 1625 msg.rxFlush = 1; 1626 msg.rxForward = 0; 1627 msg.returnStatus = 0; 1628 msg.resetDataToggle = 0; 1629 } 1630 1631 /* Sending intermediate configs */ 1632 else { 1633 msg._txOn = (!p_priv->break_on); 1634 msg._txOff = 0; 1635 msg.txFlush = 0; 1636 msg.txBreak = (p_priv->break_on); 1637 msg.rxOn = 0; 1638 msg.rxOff = 0; 1639 msg.rxFlush = 0; 1640 msg.rxForward = 0; 1641 msg.returnStatus = 0; 1642 msg.resetDataToggle = 0x0; 1643 } 1644 1645 /* Do handshaking outputs */ 1646 msg.setTxTriState_setRts = 0xff; 1647 msg.txTriState_rts = p_priv->rts_state; 1648 1649 msg.setHskoa_setDtr = 0xff; 1650 msg.hskoa_dtr = p_priv->dtr_state; 1651 1652 p_priv->resend_cont = 0; 1653 memcpy(this_urb->transfer_buffer, &msg, sizeof(msg)); 1654 1655 /* send the data out the device on control endpoint */ 1656 this_urb->transfer_buffer_length = sizeof(msg); 1657 1658 err = usb_submit_urb(this_urb, GFP_ATOMIC); 1659 if (err != 0) 1660 dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err); 1661 return 0; 1662 } 1663 1664 static int keyspan_usa28_send_setup(struct usb_serial *serial, 1665 struct usb_serial_port *port, 1666 int reset_port) 1667 { 1668 struct keyspan_usa28_portControlMessage msg; 1669 struct keyspan_serial_private *s_priv; 1670 struct keyspan_port_private *p_priv; 1671 const struct keyspan_device_details *d_details; 1672 struct urb *this_urb; 1673 int device_port, err; 1674 1675 s_priv = usb_get_serial_data(serial); 1676 p_priv = usb_get_serial_port_data(port); 1677 d_details = s_priv->device_details; 1678 device_port = port->port_number; 1679 1680 /* only do something if we have a bulk out endpoint */ 1681 this_urb = p_priv->outcont_urb; 1682 if (this_urb == NULL) { 1683 dev_dbg(&port->dev, "%s - oops no urb.\n", __func__); 1684 return -1; 1685 } 1686 1687 /* Save reset port val for resend. 1688 Don't overwrite resend for open/close condition. */ 1689 if ((reset_port + 1) > p_priv->resend_cont) 1690 p_priv->resend_cont = reset_port + 1; 1691 if (this_urb->status == -EINPROGRESS) { 1692 dev_dbg(&port->dev, "%s already writing\n", __func__); 1693 mdelay(5); 1694 return -1; 1695 } 1696 1697 memset(&msg, 0, sizeof(struct keyspan_usa28_portControlMessage)); 1698 1699 msg.setBaudRate = 1; 1700 if (d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk, 1701 &msg.baudHi, &msg.baudLo, NULL, 1702 device_port) == KEYSPAN_INVALID_BAUD_RATE) { 1703 dev_dbg(&port->dev, "%s - Invalid baud rate requested %d.\n", 1704 __func__, p_priv->baud); 1705 msg.baudLo = 0xff; 1706 msg.baudHi = 0xb2; /* Values for 9600 baud */ 1707 } 1708 1709 /* If parity is enabled, we must calculate it ourselves. */ 1710 msg.parity = 0; /* XXX for now */ 1711 1712 msg.ctsFlowControl = (p_priv->flow_control == flow_cts); 1713 msg.xonFlowControl = 0; 1714 1715 /* Do handshaking outputs, DTR is inverted relative to RTS */ 1716 msg.rts = p_priv->rts_state; 1717 msg.dtr = p_priv->dtr_state; 1718 1719 msg.forwardingLength = 16; 1720 msg.forwardMs = 10; 1721 msg.breakThreshold = 45; 1722 msg.xonChar = 17; 1723 msg.xoffChar = 19; 1724 1725 /*msg.returnStatus = 1; 1726 msg.resetDataToggle = 0xff;*/ 1727 /* Opening port */ 1728 if (reset_port == 1) { 1729 msg._txOn = 1; 1730 msg._txOff = 0; 1731 msg.txFlush = 0; 1732 msg.txForceXoff = 0; 1733 msg.txBreak = 0; 1734 msg.rxOn = 1; 1735 msg.rxOff = 0; 1736 msg.rxFlush = 1; 1737 msg.rxForward = 0; 1738 msg.returnStatus = 0; 1739 msg.resetDataToggle = 0xff; 1740 } 1741 /* Closing port */ 1742 else if (reset_port == 2) { 1743 msg._txOn = 0; 1744 msg._txOff = 1; 1745 msg.txFlush = 0; 1746 msg.txForceXoff = 0; 1747 msg.txBreak = 0; 1748 msg.rxOn = 0; 1749 msg.rxOff = 1; 1750 msg.rxFlush = 1; 1751 msg.rxForward = 0; 1752 msg.returnStatus = 0; 1753 msg.resetDataToggle = 0; 1754 } 1755 /* Sending intermediate configs */ 1756 else { 1757 msg._txOn = (!p_priv->break_on); 1758 msg._txOff = 0; 1759 msg.txFlush = 0; 1760 msg.txForceXoff = 0; 1761 msg.txBreak = (p_priv->break_on); 1762 msg.rxOn = 0; 1763 msg.rxOff = 0; 1764 msg.rxFlush = 0; 1765 msg.rxForward = 0; 1766 msg.returnStatus = 0; 1767 msg.resetDataToggle = 0x0; 1768 } 1769 1770 p_priv->resend_cont = 0; 1771 memcpy(this_urb->transfer_buffer, &msg, sizeof(msg)); 1772 1773 /* send the data out the device on control endpoint */ 1774 this_urb->transfer_buffer_length = sizeof(msg); 1775 1776 err = usb_submit_urb(this_urb, GFP_ATOMIC); 1777 if (err != 0) 1778 dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed\n", __func__); 1779 1780 return 0; 1781 } 1782 1783 static int keyspan_usa49_send_setup(struct usb_serial *serial, 1784 struct usb_serial_port *port, 1785 int reset_port) 1786 { 1787 struct keyspan_usa49_portControlMessage msg; 1788 struct usb_ctrlrequest *dr = NULL; 1789 struct keyspan_serial_private *s_priv; 1790 struct keyspan_port_private *p_priv; 1791 const struct keyspan_device_details *d_details; 1792 struct urb *this_urb; 1793 int err, device_port; 1794 1795 s_priv = usb_get_serial_data(serial); 1796 p_priv = usb_get_serial_port_data(port); 1797 d_details = s_priv->device_details; 1798 1799 this_urb = s_priv->glocont_urb; 1800 1801 /* Work out which port within the device is being setup */ 1802 device_port = port->port_number; 1803 1804 /* Make sure we have an urb then send the message */ 1805 if (this_urb == NULL) { 1806 dev_dbg(&port->dev, "%s - oops no urb for port.\n", __func__); 1807 return -1; 1808 } 1809 1810 dev_dbg(&port->dev, "%s - endpoint %d (%d)\n", 1811 __func__, usb_pipeendpoint(this_urb->pipe), device_port); 1812 1813 /* Save reset port val for resend. 1814 Don't overwrite resend for open/close condition. */ 1815 if ((reset_port + 1) > p_priv->resend_cont) 1816 p_priv->resend_cont = reset_port + 1; 1817 1818 if (this_urb->status == -EINPROGRESS) { 1819 /* dev_dbg(&port->dev, "%s - already writing\n", __func__); */ 1820 mdelay(5); 1821 return -1; 1822 } 1823 1824 memset(&msg, 0, sizeof(struct keyspan_usa49_portControlMessage)); 1825 1826 msg.portNumber = device_port; 1827 1828 /* Only set baud rate if it's changed */ 1829 if (p_priv->old_baud != p_priv->baud) { 1830 p_priv->old_baud = p_priv->baud; 1831 msg.setClocking = 0xff; 1832 if (d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk, 1833 &msg.baudHi, &msg.baudLo, &msg.prescaler, 1834 device_port) == KEYSPAN_INVALID_BAUD_RATE) { 1835 dev_dbg(&port->dev, "%s - Invalid baud rate %d requested, using 9600.\n", 1836 __func__, p_priv->baud); 1837 msg.baudLo = 0; 1838 msg.baudHi = 125; /* Values for 9600 baud */ 1839 msg.prescaler = 10; 1840 } 1841 /* msg.setPrescaler = 0xff; */ 1842 } 1843 1844 msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1; 1845 switch (p_priv->cflag & CSIZE) { 1846 case CS5: 1847 msg.lcr |= USA_DATABITS_5; 1848 break; 1849 case CS6: 1850 msg.lcr |= USA_DATABITS_6; 1851 break; 1852 case CS7: 1853 msg.lcr |= USA_DATABITS_7; 1854 break; 1855 case CS8: 1856 msg.lcr |= USA_DATABITS_8; 1857 break; 1858 } 1859 if (p_priv->cflag & PARENB) { 1860 /* note USA_PARITY_NONE == 0 */ 1861 msg.lcr |= (p_priv->cflag & PARODD) ? 1862 USA_PARITY_ODD : USA_PARITY_EVEN; 1863 } 1864 msg.setLcr = 0xff; 1865 1866 msg.ctsFlowControl = (p_priv->flow_control == flow_cts); 1867 msg.xonFlowControl = 0; 1868 msg.setFlowControl = 0xff; 1869 1870 msg.forwardingLength = 16; 1871 msg.xonChar = 17; 1872 msg.xoffChar = 19; 1873 1874 /* Opening port */ 1875 if (reset_port == 1) { 1876 msg._txOn = 1; 1877 msg._txOff = 0; 1878 msg.txFlush = 0; 1879 msg.txBreak = 0; 1880 msg.rxOn = 1; 1881 msg.rxOff = 0; 1882 msg.rxFlush = 1; 1883 msg.rxForward = 0; 1884 msg.returnStatus = 0; 1885 msg.resetDataToggle = 0xff; 1886 msg.enablePort = 1; 1887 msg.disablePort = 0; 1888 } 1889 /* Closing port */ 1890 else if (reset_port == 2) { 1891 msg._txOn = 0; 1892 msg._txOff = 1; 1893 msg.txFlush = 0; 1894 msg.txBreak = 0; 1895 msg.rxOn = 0; 1896 msg.rxOff = 1; 1897 msg.rxFlush = 1; 1898 msg.rxForward = 0; 1899 msg.returnStatus = 0; 1900 msg.resetDataToggle = 0; 1901 msg.enablePort = 0; 1902 msg.disablePort = 1; 1903 } 1904 /* Sending intermediate configs */ 1905 else { 1906 msg._txOn = (!p_priv->break_on); 1907 msg._txOff = 0; 1908 msg.txFlush = 0; 1909 msg.txBreak = (p_priv->break_on); 1910 msg.rxOn = 0; 1911 msg.rxOff = 0; 1912 msg.rxFlush = 0; 1913 msg.rxForward = 0; 1914 msg.returnStatus = 0; 1915 msg.resetDataToggle = 0x0; 1916 msg.enablePort = 0; 1917 msg.disablePort = 0; 1918 } 1919 1920 /* Do handshaking outputs */ 1921 msg.setRts = 0xff; 1922 msg.rts = p_priv->rts_state; 1923 1924 msg.setDtr = 0xff; 1925 msg.dtr = p_priv->dtr_state; 1926 1927 p_priv->resend_cont = 0; 1928 1929 /* if the device is a 49wg, we send control message on usb 1930 control EP 0 */ 1931 1932 if (d_details->product_id == keyspan_usa49wg_product_id) { 1933 dr = (void *)(s_priv->ctrl_buf); 1934 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_OUT; 1935 dr->bRequest = 0xB0; /* 49wg control message */; 1936 dr->wValue = 0; 1937 dr->wIndex = 0; 1938 dr->wLength = cpu_to_le16(sizeof(msg)); 1939 1940 memcpy(s_priv->glocont_buf, &msg, sizeof(msg)); 1941 1942 usb_fill_control_urb(this_urb, serial->dev, 1943 usb_sndctrlpipe(serial->dev, 0), 1944 (unsigned char *)dr, s_priv->glocont_buf, 1945 sizeof(msg), usa49_glocont_callback, serial); 1946 1947 } else { 1948 memcpy(this_urb->transfer_buffer, &msg, sizeof(msg)); 1949 1950 /* send the data out the device on control endpoint */ 1951 this_urb->transfer_buffer_length = sizeof(msg); 1952 } 1953 err = usb_submit_urb(this_urb, GFP_ATOMIC); 1954 if (err != 0) 1955 dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err); 1956 1957 return 0; 1958 } 1959 1960 static int keyspan_usa90_send_setup(struct usb_serial *serial, 1961 struct usb_serial_port *port, 1962 int reset_port) 1963 { 1964 struct keyspan_usa90_portControlMessage msg; 1965 struct keyspan_serial_private *s_priv; 1966 struct keyspan_port_private *p_priv; 1967 const struct keyspan_device_details *d_details; 1968 struct urb *this_urb; 1969 int err; 1970 u8 prescaler; 1971 1972 s_priv = usb_get_serial_data(serial); 1973 p_priv = usb_get_serial_port_data(port); 1974 d_details = s_priv->device_details; 1975 1976 /* only do something if we have a bulk out endpoint */ 1977 this_urb = p_priv->outcont_urb; 1978 if (this_urb == NULL) { 1979 dev_dbg(&port->dev, "%s - oops no urb.\n", __func__); 1980 return -1; 1981 } 1982 1983 /* Save reset port val for resend. 1984 Don't overwrite resend for open/close condition. */ 1985 if ((reset_port + 1) > p_priv->resend_cont) 1986 p_priv->resend_cont = reset_port + 1; 1987 if (this_urb->status == -EINPROGRESS) { 1988 dev_dbg(&port->dev, "%s already writing\n", __func__); 1989 mdelay(5); 1990 return -1; 1991 } 1992 1993 memset(&msg, 0, sizeof(struct keyspan_usa90_portControlMessage)); 1994 1995 /* Only set baud rate if it's changed */ 1996 if (p_priv->old_baud != p_priv->baud) { 1997 p_priv->old_baud = p_priv->baud; 1998 msg.setClocking = 0x01; 1999 if (d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk, 2000 &msg.baudHi, &msg.baudLo, &prescaler, 0) == KEYSPAN_INVALID_BAUD_RATE) { 2001 dev_dbg(&port->dev, "%s - Invalid baud rate %d requested, using 9600.\n", 2002 __func__, p_priv->baud); 2003 p_priv->baud = 9600; 2004 d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk, 2005 &msg.baudHi, &msg.baudLo, &prescaler, 0); 2006 } 2007 msg.setRxMode = 1; 2008 msg.setTxMode = 1; 2009 } 2010 2011 /* modes must always be correctly specified */ 2012 if (p_priv->baud > 57600) { 2013 msg.rxMode = RXMODE_DMA; 2014 msg.txMode = TXMODE_DMA; 2015 } else { 2016 msg.rxMode = RXMODE_BYHAND; 2017 msg.txMode = TXMODE_BYHAND; 2018 } 2019 2020 msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1; 2021 switch (p_priv->cflag & CSIZE) { 2022 case CS5: 2023 msg.lcr |= USA_DATABITS_5; 2024 break; 2025 case CS6: 2026 msg.lcr |= USA_DATABITS_6; 2027 break; 2028 case CS7: 2029 msg.lcr |= USA_DATABITS_7; 2030 break; 2031 case CS8: 2032 msg.lcr |= USA_DATABITS_8; 2033 break; 2034 } 2035 if (p_priv->cflag & PARENB) { 2036 /* note USA_PARITY_NONE == 0 */ 2037 msg.lcr |= (p_priv->cflag & PARODD) ? 2038 USA_PARITY_ODD : USA_PARITY_EVEN; 2039 } 2040 if (p_priv->old_cflag != p_priv->cflag) { 2041 p_priv->old_cflag = p_priv->cflag; 2042 msg.setLcr = 0x01; 2043 } 2044 2045 if (p_priv->flow_control == flow_cts) 2046 msg.txFlowControl = TXFLOW_CTS; 2047 msg.setTxFlowControl = 0x01; 2048 msg.setRxFlowControl = 0x01; 2049 2050 msg.rxForwardingLength = 16; 2051 msg.rxForwardingTimeout = 16; 2052 msg.txAckSetting = 0; 2053 msg.xonChar = 17; 2054 msg.xoffChar = 19; 2055 2056 /* Opening port */ 2057 if (reset_port == 1) { 2058 msg.portEnabled = 1; 2059 msg.rxFlush = 1; 2060 msg.txBreak = (p_priv->break_on); 2061 } 2062 /* Closing port */ 2063 else if (reset_port == 2) 2064 msg.portEnabled = 0; 2065 /* Sending intermediate configs */ 2066 else { 2067 msg.portEnabled = 1; 2068 msg.txBreak = (p_priv->break_on); 2069 } 2070 2071 /* Do handshaking outputs */ 2072 msg.setRts = 0x01; 2073 msg.rts = p_priv->rts_state; 2074 2075 msg.setDtr = 0x01; 2076 msg.dtr = p_priv->dtr_state; 2077 2078 p_priv->resend_cont = 0; 2079 memcpy(this_urb->transfer_buffer, &msg, sizeof(msg)); 2080 2081 /* send the data out the device on control endpoint */ 2082 this_urb->transfer_buffer_length = sizeof(msg); 2083 2084 err = usb_submit_urb(this_urb, GFP_ATOMIC); 2085 if (err != 0) 2086 dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err); 2087 return 0; 2088 } 2089 2090 static int keyspan_usa67_send_setup(struct usb_serial *serial, 2091 struct usb_serial_port *port, 2092 int reset_port) 2093 { 2094 struct keyspan_usa67_portControlMessage msg; 2095 struct keyspan_serial_private *s_priv; 2096 struct keyspan_port_private *p_priv; 2097 const struct keyspan_device_details *d_details; 2098 struct urb *this_urb; 2099 int err, device_port; 2100 2101 s_priv = usb_get_serial_data(serial); 2102 p_priv = usb_get_serial_port_data(port); 2103 d_details = s_priv->device_details; 2104 2105 this_urb = s_priv->glocont_urb; 2106 2107 /* Work out which port within the device is being setup */ 2108 device_port = port->port_number; 2109 2110 /* Make sure we have an urb then send the message */ 2111 if (this_urb == NULL) { 2112 dev_dbg(&port->dev, "%s - oops no urb for port.\n", __func__); 2113 return -1; 2114 } 2115 2116 /* Save reset port val for resend. 2117 Don't overwrite resend for open/close condition. */ 2118 if ((reset_port + 1) > p_priv->resend_cont) 2119 p_priv->resend_cont = reset_port + 1; 2120 if (this_urb->status == -EINPROGRESS) { 2121 /* dev_dbg(&port->dev, "%s - already writing\n", __func__); */ 2122 mdelay(5); 2123 return -1; 2124 } 2125 2126 memset(&msg, 0, sizeof(struct keyspan_usa67_portControlMessage)); 2127 2128 msg.port = device_port; 2129 2130 /* Only set baud rate if it's changed */ 2131 if (p_priv->old_baud != p_priv->baud) { 2132 p_priv->old_baud = p_priv->baud; 2133 msg.setClocking = 0xff; 2134 if (d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk, 2135 &msg.baudHi, &msg.baudLo, &msg.prescaler, 2136 device_port) == KEYSPAN_INVALID_BAUD_RATE) { 2137 dev_dbg(&port->dev, "%s - Invalid baud rate %d requested, using 9600.\n", 2138 __func__, p_priv->baud); 2139 msg.baudLo = 0; 2140 msg.baudHi = 125; /* Values for 9600 baud */ 2141 msg.prescaler = 10; 2142 } 2143 msg.setPrescaler = 0xff; 2144 } 2145 2146 msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1; 2147 switch (p_priv->cflag & CSIZE) { 2148 case CS5: 2149 msg.lcr |= USA_DATABITS_5; 2150 break; 2151 case CS6: 2152 msg.lcr |= USA_DATABITS_6; 2153 break; 2154 case CS7: 2155 msg.lcr |= USA_DATABITS_7; 2156 break; 2157 case CS8: 2158 msg.lcr |= USA_DATABITS_8; 2159 break; 2160 } 2161 if (p_priv->cflag & PARENB) { 2162 /* note USA_PARITY_NONE == 0 */ 2163 msg.lcr |= (p_priv->cflag & PARODD) ? 2164 USA_PARITY_ODD : USA_PARITY_EVEN; 2165 } 2166 msg.setLcr = 0xff; 2167 2168 msg.ctsFlowControl = (p_priv->flow_control == flow_cts); 2169 msg.xonFlowControl = 0; 2170 msg.setFlowControl = 0xff; 2171 msg.forwardingLength = 16; 2172 msg.xonChar = 17; 2173 msg.xoffChar = 19; 2174 2175 if (reset_port == 1) { 2176 /* Opening port */ 2177 msg._txOn = 1; 2178 msg._txOff = 0; 2179 msg.txFlush = 0; 2180 msg.txBreak = 0; 2181 msg.rxOn = 1; 2182 msg.rxOff = 0; 2183 msg.rxFlush = 1; 2184 msg.rxForward = 0; 2185 msg.returnStatus = 0; 2186 msg.resetDataToggle = 0xff; 2187 } else if (reset_port == 2) { 2188 /* Closing port */ 2189 msg._txOn = 0; 2190 msg._txOff = 1; 2191 msg.txFlush = 0; 2192 msg.txBreak = 0; 2193 msg.rxOn = 0; 2194 msg.rxOff = 1; 2195 msg.rxFlush = 1; 2196 msg.rxForward = 0; 2197 msg.returnStatus = 0; 2198 msg.resetDataToggle = 0; 2199 } else { 2200 /* Sending intermediate configs */ 2201 msg._txOn = (!p_priv->break_on); 2202 msg._txOff = 0; 2203 msg.txFlush = 0; 2204 msg.txBreak = (p_priv->break_on); 2205 msg.rxOn = 0; 2206 msg.rxOff = 0; 2207 msg.rxFlush = 0; 2208 msg.rxForward = 0; 2209 msg.returnStatus = 0; 2210 msg.resetDataToggle = 0x0; 2211 } 2212 2213 /* Do handshaking outputs */ 2214 msg.setTxTriState_setRts = 0xff; 2215 msg.txTriState_rts = p_priv->rts_state; 2216 2217 msg.setHskoa_setDtr = 0xff; 2218 msg.hskoa_dtr = p_priv->dtr_state; 2219 2220 p_priv->resend_cont = 0; 2221 2222 memcpy(this_urb->transfer_buffer, &msg, sizeof(msg)); 2223 2224 /* send the data out the device on control endpoint */ 2225 this_urb->transfer_buffer_length = sizeof(msg); 2226 2227 err = usb_submit_urb(this_urb, GFP_ATOMIC); 2228 if (err != 0) 2229 dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err); 2230 return 0; 2231 } 2232 2233 static void keyspan_send_setup(struct usb_serial_port *port, int reset_port) 2234 { 2235 struct usb_serial *serial = port->serial; 2236 struct keyspan_serial_private *s_priv; 2237 const struct keyspan_device_details *d_details; 2238 2239 s_priv = usb_get_serial_data(serial); 2240 d_details = s_priv->device_details; 2241 2242 switch (d_details->msg_format) { 2243 case msg_usa26: 2244 keyspan_usa26_send_setup(serial, port, reset_port); 2245 break; 2246 case msg_usa28: 2247 keyspan_usa28_send_setup(serial, port, reset_port); 2248 break; 2249 case msg_usa49: 2250 keyspan_usa49_send_setup(serial, port, reset_port); 2251 break; 2252 case msg_usa90: 2253 keyspan_usa90_send_setup(serial, port, reset_port); 2254 break; 2255 case msg_usa67: 2256 keyspan_usa67_send_setup(serial, port, reset_port); 2257 break; 2258 } 2259 } 2260 2261 2262 /* Gets called by the "real" driver (ie once firmware is loaded 2263 and renumeration has taken place. */ 2264 static int keyspan_startup(struct usb_serial *serial) 2265 { 2266 int i, err; 2267 struct keyspan_serial_private *s_priv; 2268 const struct keyspan_device_details *d_details; 2269 2270 for (i = 0; (d_details = keyspan_devices[i]) != NULL; ++i) 2271 if (d_details->product_id == 2272 le16_to_cpu(serial->dev->descriptor.idProduct)) 2273 break; 2274 if (d_details == NULL) { 2275 dev_err(&serial->dev->dev, "%s - unknown product id %x\n", 2276 __func__, le16_to_cpu(serial->dev->descriptor.idProduct)); 2277 return -ENODEV; 2278 } 2279 2280 /* Setup private data for serial driver */ 2281 s_priv = kzalloc(sizeof(struct keyspan_serial_private), GFP_KERNEL); 2282 if (!s_priv) 2283 return -ENOMEM; 2284 2285 s_priv->instat_buf = kzalloc(INSTAT_BUFLEN, GFP_KERNEL); 2286 if (!s_priv->instat_buf) 2287 goto err_instat_buf; 2288 2289 s_priv->indat_buf = kzalloc(INDAT49W_BUFLEN, GFP_KERNEL); 2290 if (!s_priv->indat_buf) 2291 goto err_indat_buf; 2292 2293 s_priv->glocont_buf = kzalloc(GLOCONT_BUFLEN, GFP_KERNEL); 2294 if (!s_priv->glocont_buf) 2295 goto err_glocont_buf; 2296 2297 s_priv->ctrl_buf = kzalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL); 2298 if (!s_priv->ctrl_buf) 2299 goto err_ctrl_buf; 2300 2301 s_priv->device_details = d_details; 2302 usb_set_serial_data(serial, s_priv); 2303 2304 keyspan_setup_urbs(serial); 2305 2306 if (s_priv->instat_urb != NULL) { 2307 err = usb_submit_urb(s_priv->instat_urb, GFP_KERNEL); 2308 if (err != 0) 2309 dev_dbg(&serial->dev->dev, "%s - submit instat urb failed %d\n", __func__, err); 2310 } 2311 if (s_priv->indat_urb != NULL) { 2312 err = usb_submit_urb(s_priv->indat_urb, GFP_KERNEL); 2313 if (err != 0) 2314 dev_dbg(&serial->dev->dev, "%s - submit indat urb failed %d\n", __func__, err); 2315 } 2316 2317 return 0; 2318 2319 err_ctrl_buf: 2320 kfree(s_priv->glocont_buf); 2321 err_glocont_buf: 2322 kfree(s_priv->indat_buf); 2323 err_indat_buf: 2324 kfree(s_priv->instat_buf); 2325 err_instat_buf: 2326 kfree(s_priv); 2327 2328 return -ENOMEM; 2329 } 2330 2331 static void keyspan_disconnect(struct usb_serial *serial) 2332 { 2333 struct keyspan_serial_private *s_priv; 2334 2335 s_priv = usb_get_serial_data(serial); 2336 2337 stop_urb(s_priv->instat_urb); 2338 stop_urb(s_priv->glocont_urb); 2339 stop_urb(s_priv->indat_urb); 2340 } 2341 2342 static void keyspan_release(struct usb_serial *serial) 2343 { 2344 struct keyspan_serial_private *s_priv; 2345 2346 s_priv = usb_get_serial_data(serial); 2347 2348 usb_free_urb(s_priv->instat_urb); 2349 usb_free_urb(s_priv->indat_urb); 2350 usb_free_urb(s_priv->glocont_urb); 2351 2352 kfree(s_priv->ctrl_buf); 2353 kfree(s_priv->glocont_buf); 2354 kfree(s_priv->indat_buf); 2355 kfree(s_priv->instat_buf); 2356 2357 kfree(s_priv); 2358 } 2359 2360 static int keyspan_port_probe(struct usb_serial_port *port) 2361 { 2362 struct usb_serial *serial = port->serial; 2363 struct keyspan_serial_private *s_priv; 2364 struct keyspan_port_private *p_priv; 2365 const struct keyspan_device_details *d_details; 2366 struct callbacks *cback; 2367 int endp; 2368 int port_num; 2369 int i; 2370 2371 s_priv = usb_get_serial_data(serial); 2372 d_details = s_priv->device_details; 2373 2374 p_priv = kzalloc(sizeof(*p_priv), GFP_KERNEL); 2375 if (!p_priv) 2376 return -ENOMEM; 2377 2378 for (i = 0; i < ARRAY_SIZE(p_priv->in_buffer); ++i) { 2379 p_priv->in_buffer[i] = kzalloc(IN_BUFLEN, GFP_KERNEL); 2380 if (!p_priv->in_buffer[i]) 2381 goto err_in_buffer; 2382 } 2383 2384 for (i = 0; i < ARRAY_SIZE(p_priv->out_buffer); ++i) { 2385 p_priv->out_buffer[i] = kzalloc(OUT_BUFLEN, GFP_KERNEL); 2386 if (!p_priv->out_buffer[i]) 2387 goto err_out_buffer; 2388 } 2389 2390 p_priv->inack_buffer = kzalloc(INACK_BUFLEN, GFP_KERNEL); 2391 if (!p_priv->inack_buffer) 2392 goto err_inack_buffer; 2393 2394 p_priv->outcont_buffer = kzalloc(OUTCONT_BUFLEN, GFP_KERNEL); 2395 if (!p_priv->outcont_buffer) 2396 goto err_outcont_buffer; 2397 2398 p_priv->device_details = d_details; 2399 2400 /* Setup values for the various callback routines */ 2401 cback = &keyspan_callbacks[d_details->msg_format]; 2402 2403 port_num = port->port_number; 2404 2405 /* Do indat endpoints first, once for each flip */ 2406 endp = d_details->indat_endpoints[port_num]; 2407 for (i = 0; i <= d_details->indat_endp_flip; ++i, ++endp) { 2408 p_priv->in_urbs[i] = keyspan_setup_urb(serial, endp, 2409 USB_DIR_IN, port, 2410 p_priv->in_buffer[i], 2411 IN_BUFLEN, 2412 cback->indat_callback); 2413 } 2414 /* outdat endpoints also have flip */ 2415 endp = d_details->outdat_endpoints[port_num]; 2416 for (i = 0; i <= d_details->outdat_endp_flip; ++i, ++endp) { 2417 p_priv->out_urbs[i] = keyspan_setup_urb(serial, endp, 2418 USB_DIR_OUT, port, 2419 p_priv->out_buffer[i], 2420 OUT_BUFLEN, 2421 cback->outdat_callback); 2422 } 2423 /* inack endpoint */ 2424 p_priv->inack_urb = keyspan_setup_urb(serial, 2425 d_details->inack_endpoints[port_num], 2426 USB_DIR_IN, port, 2427 p_priv->inack_buffer, 2428 INACK_BUFLEN, 2429 cback->inack_callback); 2430 /* outcont endpoint */ 2431 p_priv->outcont_urb = keyspan_setup_urb(serial, 2432 d_details->outcont_endpoints[port_num], 2433 USB_DIR_OUT, port, 2434 p_priv->outcont_buffer, 2435 OUTCONT_BUFLEN, 2436 cback->outcont_callback); 2437 2438 usb_set_serial_port_data(port, p_priv); 2439 2440 return 0; 2441 2442 err_outcont_buffer: 2443 kfree(p_priv->inack_buffer); 2444 err_inack_buffer: 2445 for (i = 0; i < ARRAY_SIZE(p_priv->out_buffer); ++i) 2446 kfree(p_priv->out_buffer[i]); 2447 err_out_buffer: 2448 for (i = 0; i < ARRAY_SIZE(p_priv->in_buffer); ++i) 2449 kfree(p_priv->in_buffer[i]); 2450 err_in_buffer: 2451 kfree(p_priv); 2452 2453 return -ENOMEM; 2454 } 2455 2456 static int keyspan_port_remove(struct usb_serial_port *port) 2457 { 2458 struct keyspan_port_private *p_priv; 2459 int i; 2460 2461 p_priv = usb_get_serial_port_data(port); 2462 2463 stop_urb(p_priv->inack_urb); 2464 stop_urb(p_priv->outcont_urb); 2465 for (i = 0; i < 2; i++) { 2466 stop_urb(p_priv->in_urbs[i]); 2467 stop_urb(p_priv->out_urbs[i]); 2468 } 2469 2470 usb_free_urb(p_priv->inack_urb); 2471 usb_free_urb(p_priv->outcont_urb); 2472 for (i = 0; i < 2; i++) { 2473 usb_free_urb(p_priv->in_urbs[i]); 2474 usb_free_urb(p_priv->out_urbs[i]); 2475 } 2476 2477 kfree(p_priv->outcont_buffer); 2478 kfree(p_priv->inack_buffer); 2479 for (i = 0; i < ARRAY_SIZE(p_priv->out_buffer); ++i) 2480 kfree(p_priv->out_buffer[i]); 2481 for (i = 0; i < ARRAY_SIZE(p_priv->in_buffer); ++i) 2482 kfree(p_priv->in_buffer[i]); 2483 2484 kfree(p_priv); 2485 2486 return 0; 2487 } 2488 2489 MODULE_AUTHOR(DRIVER_AUTHOR); 2490 MODULE_DESCRIPTION(DRIVER_DESC); 2491 MODULE_LICENSE("GPL"); 2492 2493 MODULE_FIRMWARE("keyspan/usa28.fw"); 2494 MODULE_FIRMWARE("keyspan/usa28x.fw"); 2495 MODULE_FIRMWARE("keyspan/usa28xa.fw"); 2496 MODULE_FIRMWARE("keyspan/usa28xb.fw"); 2497 MODULE_FIRMWARE("keyspan/usa19.fw"); 2498 MODULE_FIRMWARE("keyspan/usa19qi.fw"); 2499 MODULE_FIRMWARE("keyspan/mpr.fw"); 2500 MODULE_FIRMWARE("keyspan/usa19qw.fw"); 2501 MODULE_FIRMWARE("keyspan/usa18x.fw"); 2502 MODULE_FIRMWARE("keyspan/usa19w.fw"); 2503 MODULE_FIRMWARE("keyspan/usa49w.fw"); 2504 MODULE_FIRMWARE("keyspan/usa49wlc.fw"); 2505