1 /* 2 * Infinity Unlimited USB Phoenix driver 3 * 4 * Copyright (C) 2007 Alain Degreffe (eczema@ecze.com) 5 * 6 * Original code taken from iuutool (Copyright (C) 2006 Juan Carlos Borrás) 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * And tested with help of WB Electronics 14 * 15 */ 16 #include <linux/kernel.h> 17 #include <linux/errno.h> 18 #include <linux/init.h> 19 #include <linux/slab.h> 20 #include <linux/tty.h> 21 #include <linux/tty_driver.h> 22 #include <linux/tty_flip.h> 23 #include <linux/serial.h> 24 #include <linux/module.h> 25 #include <linux/moduleparam.h> 26 #include <linux/spinlock.h> 27 #include <linux/uaccess.h> 28 #include <linux/usb.h> 29 #include <linux/usb/serial.h> 30 #include "iuu_phoenix.h" 31 #include <linux/random.h> 32 33 34 #ifdef CONFIG_USB_SERIAL_DEBUG 35 static int debug = 1; 36 #else 37 static int debug; 38 #endif 39 40 /* 41 * Version Information 42 */ 43 #define DRIVER_VERSION "v0.10" 44 #define DRIVER_DESC "Infinity USB Unlimited Phoenix driver" 45 46 static struct usb_device_id id_table[] = { 47 {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)}, 48 {} /* Terminating entry */ 49 }; 50 MODULE_DEVICE_TABLE(usb, id_table); 51 52 static struct usb_driver iuu_driver = { 53 .name = "iuu_phoenix", 54 .probe = usb_serial_probe, 55 .disconnect = usb_serial_disconnect, 56 .id_table = id_table, 57 .no_dynamic_id = 1, 58 }; 59 60 /* turbo parameter */ 61 static int boost = 100; 62 static int clockmode = 1; 63 static int cdmode = 1; 64 static int iuu_cardin; 65 static int iuu_cardout; 66 static int xmas; 67 68 static void read_rxcmd_callback(struct urb *urb); 69 70 struct iuu_private { 71 spinlock_t lock; /* store irq state */ 72 wait_queue_head_t delta_msr_wait; 73 u8 line_status; 74 u8 termios_initialized; 75 int tiostatus; /* store IUART SIGNAL for tiocmget call */ 76 u8 reset; /* if 1 reset is needed */ 77 int poll; /* number of poll */ 78 u8 *writebuf; /* buffer for writing to device */ 79 int writelen; /* num of byte to write to device */ 80 u8 *buf; /* used for initialize speed */ 81 u8 *dbgbuf; /* debug buffer */ 82 u8 len; 83 }; 84 85 86 static void iuu_free_buf(struct iuu_private *priv) 87 { 88 kfree(priv->buf); 89 kfree(priv->dbgbuf); 90 kfree(priv->writebuf); 91 } 92 93 static int iuu_alloc_buf(struct iuu_private *priv) 94 { 95 priv->buf = kzalloc(256, GFP_KERNEL); 96 priv->dbgbuf = kzalloc(256, GFP_KERNEL); 97 priv->writebuf = kzalloc(256, GFP_KERNEL); 98 if (!priv->buf || !priv->dbgbuf || !priv->writebuf) { 99 iuu_free_buf(priv); 100 dbg("%s problem allocation buffer", __func__); 101 return -ENOMEM; 102 } 103 dbg("%s - Privates buffers allocation success", __func__); 104 return 0; 105 } 106 107 static int iuu_startup(struct usb_serial *serial) 108 { 109 struct iuu_private *priv; 110 priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL); 111 dbg("%s- priv allocation success", __func__); 112 if (!priv) 113 return -ENOMEM; 114 if (iuu_alloc_buf(priv)) { 115 kfree(priv); 116 return -ENOMEM; 117 } 118 spin_lock_init(&priv->lock); 119 init_waitqueue_head(&priv->delta_msr_wait); 120 usb_set_serial_port_data(serial->port[0], priv); 121 return 0; 122 } 123 124 /* Shutdown function */ 125 static void iuu_shutdown(struct usb_serial *serial) 126 { 127 struct usb_serial_port *port = serial->port[0]; 128 struct iuu_private *priv = usb_get_serial_port_data(port); 129 if (!port) 130 return; 131 132 dbg("%s", __func__); 133 134 if (priv) { 135 iuu_free_buf(priv); 136 dbg("%s - I will free all", __func__); 137 usb_set_serial_port_data(port, NULL); 138 139 dbg("%s - priv is not anymore in port structure", __func__); 140 kfree(priv); 141 142 dbg("%s priv is now kfree", __func__); 143 } 144 } 145 146 static int iuu_tiocmset(struct tty_struct *tty, struct file *file, 147 unsigned int set, unsigned int clear) 148 { 149 struct usb_serial_port *port = tty->driver_data; 150 struct iuu_private *priv = usb_get_serial_port_data(port); 151 unsigned long flags; 152 153 /* FIXME: locking on tiomstatus */ 154 dbg("%s (%d) msg : SET = 0x%04x, CLEAR = 0x%04x ", __func__, 155 port->number, set, clear); 156 157 spin_lock_irqsave(&priv->lock, flags); 158 if (set & TIOCM_RTS) 159 priv->tiostatus = TIOCM_RTS; 160 161 if (!(set & TIOCM_RTS) && priv->tiostatus == TIOCM_RTS) { 162 dbg("%s TIOCMSET RESET called !!!", __func__); 163 priv->reset = 1; 164 } 165 spin_unlock_irqrestore(&priv->lock, flags); 166 return 0; 167 } 168 169 /* This is used to provide a carrier detect mechanism 170 * When a card is present, the response is 0x00 171 * When no card , the reader respond with TIOCM_CD 172 * This is known as CD autodetect mechanism 173 */ 174 static int iuu_tiocmget(struct tty_struct *tty, struct file *file) 175 { 176 struct usb_serial_port *port = tty->driver_data; 177 struct iuu_private *priv = usb_get_serial_port_data(port); 178 unsigned long flags; 179 int rc; 180 181 spin_lock_irqsave(&priv->lock, flags); 182 rc = priv->tiostatus; 183 spin_unlock_irqrestore(&priv->lock, flags); 184 185 return rc; 186 } 187 188 static void iuu_rxcmd(struct urb *urb) 189 { 190 struct usb_serial_port *port = urb->context; 191 int result; 192 int status = urb->status; 193 194 dbg("%s - enter", __func__); 195 196 if (status) { 197 dbg("%s - status = %d", __func__, status); 198 /* error stop all */ 199 return; 200 } 201 202 203 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 204 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 205 usb_sndbulkpipe(port->serial->dev, 206 port->bulk_out_endpointAddress), 207 port->write_urb->transfer_buffer, 1, 208 read_rxcmd_callback, port); 209 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 210 } 211 212 static int iuu_reset(struct usb_serial_port *port, u8 wt) 213 { 214 struct iuu_private *priv = usb_get_serial_port_data(port); 215 int result; 216 char *buf_ptr = port->write_urb->transfer_buffer; 217 dbg("%s - enter", __func__); 218 219 /* Prepare the reset sequence */ 220 221 *buf_ptr++ = IUU_RST_SET; 222 *buf_ptr++ = IUU_DELAY_MS; 223 *buf_ptr++ = wt; 224 *buf_ptr = IUU_RST_CLEAR; 225 226 /* send the sequence */ 227 228 usb_fill_bulk_urb(port->write_urb, 229 port->serial->dev, 230 usb_sndbulkpipe(port->serial->dev, 231 port->bulk_out_endpointAddress), 232 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port); 233 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 234 priv->reset = 0; 235 return result; 236 } 237 238 /* Status Function 239 * Return value is 240 * 0x00 = no card 241 * 0x01 = smartcard 242 * 0x02 = sim card 243 */ 244 static void iuu_update_status_callback(struct urb *urb) 245 { 246 struct usb_serial_port *port = urb->context; 247 struct iuu_private *priv = usb_get_serial_port_data(port); 248 u8 *st; 249 int status = urb->status; 250 251 dbg("%s - enter", __func__); 252 253 if (status) { 254 dbg("%s - status = %d", __func__, status); 255 /* error stop all */ 256 return; 257 } 258 259 st = urb->transfer_buffer; 260 dbg("%s - enter", __func__); 261 if (urb->actual_length == 1) { 262 switch (st[0]) { 263 case 0x1: 264 priv->tiostatus = iuu_cardout; 265 break; 266 case 0x0: 267 priv->tiostatus = iuu_cardin; 268 break; 269 default: 270 priv->tiostatus = iuu_cardin; 271 } 272 } 273 iuu_rxcmd(urb); 274 } 275 276 static void iuu_status_callback(struct urb *urb) 277 { 278 struct usb_serial_port *port = urb->context; 279 int result; 280 int status = urb->status; 281 282 dbg("%s - status = %d", __func__, status); 283 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 284 usb_rcvbulkpipe(port->serial->dev, 285 port->bulk_in_endpointAddress), 286 port->read_urb->transfer_buffer, 256, 287 iuu_update_status_callback, port); 288 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 289 } 290 291 static int iuu_status(struct usb_serial_port *port) 292 { 293 int result; 294 295 dbg("%s - enter", __func__); 296 297 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1); 298 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 299 usb_sndbulkpipe(port->serial->dev, 300 port->bulk_out_endpointAddress), 301 port->write_urb->transfer_buffer, 1, 302 iuu_status_callback, port); 303 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 304 return result; 305 306 } 307 308 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count) 309 { 310 int status; 311 struct usb_serial *serial = port->serial; 312 int actual = 0; 313 314 dbg("%s - enter", __func__); 315 316 /* send the data out the bulk port */ 317 318 status = 319 usb_bulk_msg(serial->dev, 320 usb_sndbulkpipe(serial->dev, 321 port->bulk_out_endpointAddress), buf, 322 count, &actual, HZ * 1); 323 324 if (status != IUU_OPERATION_OK) 325 dbg("%s - error = %2x", __func__, status); 326 else 327 dbg("%s - write OK !", __func__); 328 return status; 329 } 330 331 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count) 332 { 333 int status; 334 struct usb_serial *serial = port->serial; 335 int actual = 0; 336 337 dbg("%s - enter", __func__); 338 339 /* send the data out the bulk port */ 340 341 status = 342 usb_bulk_msg(serial->dev, 343 usb_rcvbulkpipe(serial->dev, 344 port->bulk_in_endpointAddress), buf, 345 count, &actual, HZ * 1); 346 347 if (status != IUU_OPERATION_OK) 348 dbg("%s - error = %2x", __func__, status); 349 else 350 dbg("%s - read OK !", __func__); 351 return status; 352 } 353 354 static int iuu_led(struct usb_serial_port *port, unsigned int R, 355 unsigned int G, unsigned int B, u8 f) 356 { 357 int status; 358 u8 *buf; 359 buf = kmalloc(8, GFP_KERNEL); 360 if (!buf) 361 return -ENOMEM; 362 363 dbg("%s - enter", __func__); 364 365 buf[0] = IUU_SET_LED; 366 buf[1] = R & 0xFF; 367 buf[2] = (R >> 8) & 0xFF; 368 buf[3] = G & 0xFF; 369 buf[4] = (G >> 8) & 0xFF; 370 buf[5] = B & 0xFF; 371 buf[6] = (B >> 8) & 0xFF; 372 buf[7] = f; 373 status = bulk_immediate(port, buf, 8); 374 kfree(buf); 375 if (status != IUU_OPERATION_OK) 376 dbg("%s - led error status = %2x", __func__, status); 377 else 378 dbg("%s - led OK !", __func__); 379 return IUU_OPERATION_OK; 380 } 381 382 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1, 383 u8 b2, u8 freq) 384 { 385 *buf++ = IUU_SET_LED; 386 *buf++ = r1; 387 *buf++ = r2; 388 *buf++ = g1; 389 *buf++ = g2; 390 *buf++ = b1; 391 *buf++ = b2; 392 *buf = freq; 393 } 394 395 static void iuu_led_activity_on(struct urb *urb) 396 { 397 struct usb_serial_port *port = urb->context; 398 int result; 399 char *buf_ptr = port->write_urb->transfer_buffer; 400 *buf_ptr++ = IUU_SET_LED; 401 if (xmas == 1) { 402 get_random_bytes(buf_ptr, 6); 403 *(buf_ptr+7) = 1; 404 } else { 405 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255); 406 } 407 408 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 409 usb_sndbulkpipe(port->serial->dev, 410 port->bulk_out_endpointAddress), 411 port->write_urb->transfer_buffer, 8 , 412 iuu_rxcmd, port); 413 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 414 } 415 416 static void iuu_led_activity_off(struct urb *urb) 417 { 418 struct usb_serial_port *port = urb->context; 419 int result; 420 char *buf_ptr = port->write_urb->transfer_buffer; 421 if (xmas == 1) { 422 iuu_rxcmd(urb); 423 return; 424 } else { 425 *buf_ptr++ = IUU_SET_LED; 426 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255); 427 } 428 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 429 usb_sndbulkpipe(port->serial->dev, 430 port->bulk_out_endpointAddress), 431 port->write_urb->transfer_buffer, 8 , 432 iuu_rxcmd, port); 433 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 434 } 435 436 437 438 static int iuu_clk(struct usb_serial_port *port, int dwFrq) 439 { 440 int status; 441 struct iuu_private *priv = usb_get_serial_port_data(port); 442 int Count = 0; 443 u8 FrqGenAdr = 0x69; 444 u8 DIV = 0; /* 8bit */ 445 u8 XDRV = 0; /* 8bit */ 446 u8 PUMP = 0; /* 3bit */ 447 u8 PBmsb = 0; /* 2bit */ 448 u8 PBlsb = 0; /* 8bit */ 449 u8 PO = 0; /* 1bit */ 450 u8 Q = 0; /* 7bit */ 451 /* 24bit = 3bytes */ 452 unsigned int P = 0; 453 unsigned int P2 = 0; 454 int frq = (int)dwFrq; 455 456 dbg("%s - enter", __func__); 457 458 if (frq == 0) { 459 priv->buf[Count++] = IUU_UART_WRITE_I2C; 460 priv->buf[Count++] = FrqGenAdr << 1; 461 priv->buf[Count++] = 0x09; 462 priv->buf[Count++] = 0x00; 463 464 status = bulk_immediate(port, (u8 *) priv->buf, Count); 465 if (status != 0) { 466 dbg("%s - write error ", __func__); 467 return status; 468 } 469 } else if (frq == 3579000) { 470 DIV = 100; 471 P = 1193; 472 Q = 40; 473 XDRV = 0; 474 } else if (frq == 3680000) { 475 DIV = 105; 476 P = 161; 477 Q = 5; 478 XDRV = 0; 479 } else if (frq == 6000000) { 480 DIV = 66; 481 P = 66; 482 Q = 2; 483 XDRV = 0x28; 484 } else { 485 unsigned int result = 0; 486 unsigned int tmp = 0; 487 unsigned int check; 488 unsigned int check2; 489 char found = 0x00; 490 unsigned int lQ = 2; 491 unsigned int lP = 2055; 492 unsigned int lDiv = 4; 493 494 for (lQ = 2; lQ <= 47 && !found; lQ++) 495 for (lP = 2055; lP >= 8 && !found; lP--) 496 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) { 497 tmp = (12000000 / lDiv) * (lP / lQ); 498 if (abs((int)(tmp - frq)) < 499 abs((int)(frq - result))) { 500 check2 = (12000000 / lQ); 501 if (check2 < 250000) 502 continue; 503 check = (12000000 / lQ) * lP; 504 if (check > 400000000) 505 continue; 506 if (check < 100000000) 507 continue; 508 if (lDiv < 4 || lDiv > 127) 509 continue; 510 result = tmp; 511 P = lP; 512 DIV = lDiv; 513 Q = lQ; 514 if (result == frq) 515 found = 0x01; 516 } 517 } 518 } 519 P2 = ((P - PO) / 2) - 4; 520 DIV = DIV; 521 PUMP = 0x04; 522 PBmsb = (P2 >> 8 & 0x03); 523 PBlsb = P2 & 0xFF; 524 PO = (P >> 10) & 0x01; 525 Q = Q - 2; 526 527 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 528 priv->buf[Count++] = FrqGenAdr << 1; 529 priv->buf[Count++] = 0x09; 530 priv->buf[Count++] = 0x20; /* Adr = 0x09 */ 531 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 532 priv->buf[Count++] = FrqGenAdr << 1; 533 priv->buf[Count++] = 0x0C; 534 priv->buf[Count++] = DIV; /* Adr = 0x0C */ 535 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 536 priv->buf[Count++] = FrqGenAdr << 1; 537 priv->buf[Count++] = 0x12; 538 priv->buf[Count++] = XDRV; /* Adr = 0x12 */ 539 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 540 priv->buf[Count++] = FrqGenAdr << 1; 541 priv->buf[Count++] = 0x13; 542 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */ 543 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 544 priv->buf[Count++] = FrqGenAdr << 1; 545 priv->buf[Count++] = 0x40; 546 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) | 547 (PBmsb & 0x03); /* Adr = 0x40 */ 548 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 549 priv->buf[Count++] = FrqGenAdr << 1; 550 priv->buf[Count++] = 0x41; 551 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */ 552 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 553 priv->buf[Count++] = FrqGenAdr << 1; 554 priv->buf[Count++] = 0x42; 555 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */ 556 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 557 priv->buf[Count++] = FrqGenAdr << 1; 558 priv->buf[Count++] = 0x44; 559 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */ 560 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 561 priv->buf[Count++] = FrqGenAdr << 1; 562 priv->buf[Count++] = 0x45; 563 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */ 564 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 565 priv->buf[Count++] = FrqGenAdr << 1; 566 priv->buf[Count++] = 0x46; 567 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */ 568 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 569 priv->buf[Count++] = FrqGenAdr << 1; 570 priv->buf[Count++] = 0x47; 571 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */ 572 573 status = bulk_immediate(port, (u8 *) priv->buf, Count); 574 if (status != IUU_OPERATION_OK) 575 dbg("%s - write error ", __func__); 576 return status; 577 } 578 579 static int iuu_uart_flush(struct usb_serial_port *port) 580 { 581 int i; 582 int status; 583 u8 rxcmd = IUU_UART_RX; 584 struct iuu_private *priv = usb_get_serial_port_data(port); 585 586 dbg("%s - enter", __func__); 587 588 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0) 589 return -EIO; 590 591 for (i = 0; i < 2; i++) { 592 status = bulk_immediate(port, &rxcmd, 1); 593 if (status != IUU_OPERATION_OK) { 594 dbg("%s - uart_flush_write error", __func__); 595 return status; 596 } 597 598 status = read_immediate(port, &priv->len, 1); 599 if (status != IUU_OPERATION_OK) { 600 dbg("%s - uart_flush_read error", __func__); 601 return status; 602 } 603 604 if (priv->len > 0) { 605 dbg("%s - uart_flush datalen is : %i ", __func__, 606 priv->len); 607 status = read_immediate(port, priv->buf, priv->len); 608 if (status != IUU_OPERATION_OK) { 609 dbg("%s - uart_flush_read error", __func__); 610 return status; 611 } 612 } 613 } 614 dbg("%s - uart_flush_read OK!", __func__); 615 iuu_led(port, 0, 0xF000, 0, 0xFF); 616 return status; 617 } 618 619 static void read_buf_callback(struct urb *urb) 620 { 621 struct usb_serial_port *port = urb->context; 622 unsigned char *data = urb->transfer_buffer; 623 struct tty_struct *tty; 624 int status = urb->status; 625 626 dbg("%s - status = %d", __func__, status); 627 628 if (status) { 629 if (status == -EPROTO) { 630 /* reschedule needed */ 631 } 632 return; 633 } 634 635 dbg("%s - %i chars to write", __func__, urb->actual_length); 636 tty = tty_port_tty_get(&port->port); 637 if (data == NULL) 638 dbg("%s - data is NULL !!!", __func__); 639 if (tty && urb->actual_length && data) { 640 tty_insert_flip_string(tty, data, urb->actual_length); 641 tty_flip_buffer_push(tty); 642 } 643 tty_kref_put(tty); 644 iuu_led_activity_on(urb); 645 } 646 647 static int iuu_bulk_write(struct usb_serial_port *port) 648 { 649 struct iuu_private *priv = usb_get_serial_port_data(port); 650 unsigned long flags; 651 int result; 652 int i; 653 int buf_len; 654 char *buf_ptr = port->write_urb->transfer_buffer; 655 dbg("%s - enter", __func__); 656 657 spin_lock_irqsave(&priv->lock, flags); 658 *buf_ptr++ = IUU_UART_ESC; 659 *buf_ptr++ = IUU_UART_TX; 660 *buf_ptr++ = priv->writelen; 661 662 memcpy(buf_ptr, priv->writebuf, priv->writelen); 663 buf_len = priv->writelen; 664 priv->writelen = 0; 665 spin_unlock_irqrestore(&priv->lock, flags); 666 if (debug == 1) { 667 for (i = 0; i < buf_len; i++) 668 sprintf(priv->dbgbuf + i*2 , 669 "%02X", priv->writebuf[i]); 670 priv->dbgbuf[buf_len+i*2] = 0; 671 dbg("%s - writing %i chars : %s", __func__, 672 buf_len, priv->dbgbuf); 673 } 674 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 675 usb_sndbulkpipe(port->serial->dev, 676 port->bulk_out_endpointAddress), 677 port->write_urb->transfer_buffer, buf_len + 3, 678 iuu_rxcmd, port); 679 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 680 usb_serial_port_softint(port); 681 return result; 682 } 683 684 static int iuu_read_buf(struct usb_serial_port *port, int len) 685 { 686 int result; 687 dbg("%s - enter", __func__); 688 689 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 690 usb_rcvbulkpipe(port->serial->dev, 691 port->bulk_in_endpointAddress), 692 port->read_urb->transfer_buffer, len, 693 read_buf_callback, port); 694 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 695 return result; 696 } 697 698 static void iuu_uart_read_callback(struct urb *urb) 699 { 700 struct usb_serial_port *port = urb->context; 701 struct iuu_private *priv = usb_get_serial_port_data(port); 702 unsigned long flags; 703 int status = urb->status; 704 int error = 0; 705 int len = 0; 706 unsigned char *data = urb->transfer_buffer; 707 priv->poll++; 708 709 dbg("%s - enter", __func__); 710 711 if (status) { 712 dbg("%s - status = %d", __func__, status); 713 /* error stop all */ 714 return; 715 } 716 if (data == NULL) 717 dbg("%s - data is NULL !!!", __func__); 718 719 if (urb->actual_length == 1 && data != NULL) 720 len = (int) data[0]; 721 722 if (urb->actual_length > 1) { 723 dbg("%s - urb->actual_length = %i", __func__, 724 urb->actual_length); 725 error = 1; 726 return; 727 } 728 /* if len > 0 call readbuf */ 729 730 if (len > 0 && error == 0) { 731 dbg("%s - call read buf - len to read is %i ", 732 __func__, len); 733 status = iuu_read_buf(port, len); 734 return; 735 } 736 /* need to update status ? */ 737 if (priv->poll > 99) { 738 status = iuu_status(port); 739 priv->poll = 0; 740 return; 741 } 742 743 /* reset waiting ? */ 744 745 if (priv->reset == 1) { 746 status = iuu_reset(port, 0xC); 747 return; 748 } 749 /* Writebuf is waiting */ 750 spin_lock_irqsave(&priv->lock, flags); 751 if (priv->writelen > 0) { 752 spin_unlock_irqrestore(&priv->lock, flags); 753 status = iuu_bulk_write(port); 754 return; 755 } 756 spin_unlock_irqrestore(&priv->lock, flags); 757 /* if nothing to write call again rxcmd */ 758 dbg("%s - rxcmd recall", __func__); 759 iuu_led_activity_off(urb); 760 } 761 762 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port, 763 const u8 *buf, int count) 764 { 765 struct iuu_private *priv = usb_get_serial_port_data(port); 766 unsigned long flags; 767 dbg("%s - enter", __func__); 768 769 if (count > 256) 770 return -ENOMEM; 771 772 spin_lock_irqsave(&priv->lock, flags); 773 774 /* fill the buffer */ 775 memcpy(priv->writebuf + priv->writelen, buf, count); 776 priv->writelen += count; 777 spin_unlock_irqrestore(&priv->lock, flags); 778 779 return count; 780 } 781 782 static void read_rxcmd_callback(struct urb *urb) 783 { 784 struct usb_serial_port *port = urb->context; 785 int result; 786 int status = urb->status; 787 788 dbg("%s - status = %d", __func__, status); 789 790 if (status) { 791 /* error stop all */ 792 return; 793 } 794 795 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 796 usb_rcvbulkpipe(port->serial->dev, 797 port->bulk_in_endpointAddress), 798 port->read_urb->transfer_buffer, 256, 799 iuu_uart_read_callback, port); 800 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 801 dbg("%s - submit result = %d", __func__, result); 802 return; 803 } 804 805 static int iuu_uart_on(struct usb_serial_port *port) 806 { 807 int status; 808 u8 *buf; 809 810 buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL); 811 812 if (!buf) 813 return -ENOMEM; 814 815 buf[0] = IUU_UART_ENABLE; 816 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF); 817 buf[2] = (u8) (0x00FF & IUU_BAUD_9600); 818 buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN); 819 820 status = bulk_immediate(port, buf, 4); 821 if (status != IUU_OPERATION_OK) { 822 dbg("%s - uart_on error", __func__); 823 goto uart_enable_failed; 824 } 825 /* iuu_reset() the card after iuu_uart_on() */ 826 status = iuu_uart_flush(port); 827 if (status != IUU_OPERATION_OK) 828 dbg("%s - uart_flush error", __func__); 829 uart_enable_failed: 830 kfree(buf); 831 return status; 832 } 833 834 /* Diables the IUU UART (a.k.a. the Phoenix voiderface) */ 835 static int iuu_uart_off(struct usb_serial_port *port) 836 { 837 int status; 838 u8 *buf; 839 buf = kmalloc(1, GFP_KERNEL); 840 if (!buf) 841 return -ENOMEM; 842 buf[0] = IUU_UART_DISABLE; 843 844 status = bulk_immediate(port, buf, 1); 845 if (status != IUU_OPERATION_OK) 846 dbg("%s - uart_off error", __func__); 847 848 kfree(buf); 849 return status; 850 } 851 852 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud, 853 u32 *actual, u8 parity) 854 { 855 int status; 856 u8 *dataout; 857 u8 DataCount = 0; 858 u8 T1Frekvens = 0; 859 u8 T1reload = 0; 860 unsigned int T1FrekvensHZ = 0; 861 862 dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL); 863 864 if (!dataout) 865 return -ENOMEM; 866 867 if (baud < 1200 || baud > 230400) { 868 kfree(dataout); 869 return IUU_INVALID_PARAMETER; 870 } 871 if (baud > 977) { 872 T1Frekvens = 3; 873 T1FrekvensHZ = 500000; 874 } 875 876 if (baud > 3906) { 877 T1Frekvens = 2; 878 T1FrekvensHZ = 2000000; 879 } 880 881 if (baud > 11718) { 882 T1Frekvens = 1; 883 T1FrekvensHZ = 6000000; 884 } 885 886 if (baud > 46875) { 887 T1Frekvens = 0; 888 T1FrekvensHZ = 24000000; 889 } 890 891 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2)); 892 893 /* magic number here: ENTER_FIRMWARE_UPDATE; */ 894 dataout[DataCount++] = IUU_UART_ESC; 895 /* magic number here: CHANGE_BAUD; */ 896 dataout[DataCount++] = IUU_UART_CHANGE; 897 dataout[DataCount++] = T1Frekvens; 898 dataout[DataCount++] = T1reload; 899 900 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2; 901 902 switch (parity & 0x0F) { 903 case IUU_PARITY_NONE: 904 dataout[DataCount++] = 0x00; 905 break; 906 case IUU_PARITY_EVEN: 907 dataout[DataCount++] = 0x01; 908 break; 909 case IUU_PARITY_ODD: 910 dataout[DataCount++] = 0x02; 911 break; 912 case IUU_PARITY_MARK: 913 dataout[DataCount++] = 0x03; 914 break; 915 case IUU_PARITY_SPACE: 916 dataout[DataCount++] = 0x04; 917 break; 918 default: 919 kfree(dataout); 920 return IUU_INVALID_PARAMETER; 921 break; 922 } 923 924 switch (parity & 0xF0) { 925 case IUU_ONE_STOP_BIT: 926 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT; 927 break; 928 929 case IUU_TWO_STOP_BITS: 930 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS; 931 break; 932 default: 933 kfree(dataout); 934 return IUU_INVALID_PARAMETER; 935 break; 936 } 937 938 status = bulk_immediate(port, dataout, DataCount); 939 if (status != IUU_OPERATION_OK) 940 dbg("%s - uart_off error", __func__); 941 kfree(dataout); 942 return status; 943 } 944 945 static void iuu_set_termios(struct tty_struct *tty, 946 struct usb_serial_port *port, struct ktermios *old_termios) 947 { 948 const u32 supported_mask = CMSPAR|PARENB|PARODD; 949 950 unsigned int cflag = tty->termios->c_cflag; 951 int status; 952 u32 actual; 953 u32 parity; 954 int csize = CS7; 955 int baud = 9600; /* Fixed for the moment */ 956 u32 newval = cflag & supported_mask; 957 958 /* compute the parity parameter */ 959 parity = 0; 960 if (cflag & CMSPAR) { /* Using mark space */ 961 if (cflag & PARODD) 962 parity |= IUU_PARITY_SPACE; 963 else 964 parity |= IUU_PARITY_MARK; 965 } else if (!(cflag & PARENB)) { 966 parity |= IUU_PARITY_NONE; 967 csize = CS8; 968 } else if (cflag & PARODD) 969 parity |= IUU_PARITY_ODD; 970 else 971 parity |= IUU_PARITY_EVEN; 972 973 parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT); 974 975 /* set it */ 976 status = iuu_uart_baud(port, 977 (clockmode == 2) ? 16457 : 9600 * boost / 100, 978 &actual, parity); 979 980 /* set the termios value to the real one, so the user now what has 981 * changed. We support few fields so its easies to copy the old hw 982 * settings back over and then adjust them 983 */ 984 if (old_termios) 985 tty_termios_copy_hw(tty->termios, old_termios); 986 if (status != 0) /* Set failed - return old bits */ 987 return; 988 /* Re-encode speed, parity and csize */ 989 tty_encode_baud_rate(tty, baud, baud); 990 tty->termios->c_cflag &= ~(supported_mask|CSIZE); 991 tty->termios->c_cflag |= newval | csize; 992 } 993 994 static void iuu_close(struct usb_serial_port *port) 995 { 996 /* iuu_led (port,255,0,0,0); */ 997 struct usb_serial *serial; 998 999 serial = port->serial; 1000 if (!serial) 1001 return; 1002 1003 dbg("%s - port %d", __func__, port->number); 1004 1005 iuu_uart_off(port); 1006 if (serial->dev) { 1007 /* free writebuf */ 1008 /* shutdown our urbs */ 1009 dbg("%s - shutting down urbs", __func__); 1010 usb_kill_urb(port->write_urb); 1011 usb_kill_urb(port->read_urb); 1012 usb_kill_urb(port->interrupt_in_urb); 1013 msleep(1000); 1014 /* wait one second to free all buffers */ 1015 iuu_led(port, 0, 0, 0xF000, 0xFF); 1016 msleep(1000); 1017 usb_reset_device(port->serial->dev); 1018 } 1019 } 1020 1021 static int iuu_open(struct tty_struct *tty, 1022 struct usb_serial_port *port, struct file *filp) 1023 { 1024 struct usb_serial *serial = port->serial; 1025 u8 *buf; 1026 int result; 1027 u32 actual; 1028 unsigned long flags; 1029 struct iuu_private *priv = usb_get_serial_port_data(port); 1030 1031 dbg("%s - port %d", __func__, port->number); 1032 usb_clear_halt(serial->dev, port->write_urb->pipe); 1033 usb_clear_halt(serial->dev, port->read_urb->pipe); 1034 1035 buf = kmalloc(10, GFP_KERNEL); 1036 if (buf == NULL) 1037 return -ENOMEM; 1038 1039 /* fixup the endpoint buffer size */ 1040 kfree(port->bulk_out_buffer); 1041 port->bulk_out_buffer = kmalloc(512, GFP_KERNEL); 1042 port->bulk_out_size = 512; 1043 kfree(port->bulk_in_buffer); 1044 port->bulk_in_buffer = kmalloc(512, GFP_KERNEL); 1045 port->bulk_in_size = 512; 1046 1047 if (!port->bulk_out_buffer || !port->bulk_in_buffer) { 1048 kfree(port->bulk_out_buffer); 1049 kfree(port->bulk_in_buffer); 1050 kfree(buf); 1051 return -ENOMEM; 1052 } 1053 1054 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1055 usb_sndbulkpipe(port->serial->dev, 1056 port->bulk_out_endpointAddress), 1057 port->bulk_out_buffer, 512, 1058 NULL, NULL); 1059 1060 1061 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 1062 usb_rcvbulkpipe(port->serial->dev, 1063 port->bulk_in_endpointAddress), 1064 port->bulk_in_buffer, 512, 1065 NULL, NULL); 1066 1067 /* set the termios structure */ 1068 spin_lock_irqsave(&priv->lock, flags); 1069 if (tty && !priv->termios_initialized) { 1070 *(tty->termios) = tty_std_termios; 1071 tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600 1072 | TIOCM_CTS | CSTOPB | PARENB; 1073 tty->termios->c_ispeed = 9600; 1074 tty->termios->c_ospeed = 9600; 1075 tty->termios->c_lflag = 0; 1076 tty->termios->c_oflag = 0; 1077 tty->termios->c_iflag = 0; 1078 priv->termios_initialized = 1; 1079 priv->poll = 0; 1080 } 1081 spin_unlock_irqrestore(&priv->lock, flags); 1082 1083 /* initialize writebuf */ 1084 #define FISH(a, b, c, d) do { \ 1085 result = usb_control_msg(port->serial->dev, \ 1086 usb_rcvctrlpipe(port->serial->dev, 0), \ 1087 b, a, c, d, buf, 1, 1000); \ 1088 dbg("0x%x:0x%x:0x%x:0x%x %d - %x", a, b, c, d, result, \ 1089 buf[0]); } while (0); 1090 1091 #define SOUP(a, b, c, d) do { \ 1092 result = usb_control_msg(port->serial->dev, \ 1093 usb_sndctrlpipe(port->serial->dev, 0), \ 1094 b, a, c, d, NULL, 0, 1000); \ 1095 dbg("0x%x:0x%x:0x%x:0x%x %d", a, b, c, d, result); } while (0) 1096 1097 /* This is not UART related but IUU USB driver related or something */ 1098 /* like that. Basically no IUU will accept any commands from the USB */ 1099 /* host unless it has received the following message */ 1100 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */ 1101 1102 SOUP(0x03, 0x02, 0x02, 0x0); 1103 kfree(buf); 1104 iuu_led(port, 0xF000, 0xF000, 0, 0xFF); 1105 iuu_uart_on(port); 1106 if (boost < 100) 1107 boost = 100; 1108 switch (clockmode) { 1109 case 2: /* 3.680 Mhz */ 1110 iuu_clk(port, IUU_CLK_3680000 * boost / 100); 1111 result = 1112 iuu_uart_baud(port, 9600 * boost / 100, &actual, 1113 IUU_PARITY_EVEN); 1114 break; 1115 case 3: /* 6.00 Mhz */ 1116 iuu_clk(port, IUU_CLK_6000000 * boost / 100); 1117 result = 1118 iuu_uart_baud(port, 16457 * boost / 100, &actual, 1119 IUU_PARITY_EVEN); 1120 break; 1121 default: /* 3.579 Mhz */ 1122 iuu_clk(port, IUU_CLK_3579000 * boost / 100); 1123 result = 1124 iuu_uart_baud(port, 9600 * boost / 100, &actual, 1125 IUU_PARITY_EVEN); 1126 } 1127 1128 /* set the cardin cardout signals */ 1129 switch (cdmode) { 1130 case 0: 1131 iuu_cardin = 0; 1132 iuu_cardout = 0; 1133 break; 1134 case 1: 1135 iuu_cardin = TIOCM_CD; 1136 iuu_cardout = 0; 1137 break; 1138 case 2: 1139 iuu_cardin = 0; 1140 iuu_cardout = TIOCM_CD; 1141 break; 1142 case 3: 1143 iuu_cardin = TIOCM_DSR; 1144 iuu_cardout = 0; 1145 break; 1146 case 4: 1147 iuu_cardin = 0; 1148 iuu_cardout = TIOCM_DSR; 1149 break; 1150 case 5: 1151 iuu_cardin = TIOCM_CTS; 1152 iuu_cardout = 0; 1153 break; 1154 case 6: 1155 iuu_cardin = 0; 1156 iuu_cardout = TIOCM_CTS; 1157 break; 1158 case 7: 1159 iuu_cardin = TIOCM_RNG; 1160 iuu_cardout = 0; 1161 break; 1162 case 8: 1163 iuu_cardin = 0; 1164 iuu_cardout = TIOCM_RNG; 1165 } 1166 1167 iuu_uart_flush(port); 1168 1169 dbg("%s - initialization done", __func__); 1170 1171 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 1172 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1173 usb_sndbulkpipe(port->serial->dev, 1174 port->bulk_out_endpointAddress), 1175 port->write_urb->transfer_buffer, 1, 1176 read_rxcmd_callback, port); 1177 result = usb_submit_urb(port->write_urb, GFP_KERNEL); 1178 1179 if (result) { 1180 dev_err(&port->dev, "%s - failed submitting read urb," 1181 " error %d\n", __func__, result); 1182 iuu_close(port); 1183 return -EPROTO; 1184 } else { 1185 dbg("%s - rxcmd OK", __func__); 1186 } 1187 return result; 1188 } 1189 1190 static struct usb_serial_driver iuu_device = { 1191 .driver = { 1192 .owner = THIS_MODULE, 1193 .name = "iuu_phoenix", 1194 }, 1195 .id_table = id_table, 1196 .num_ports = 1, 1197 .open = iuu_open, 1198 .close = iuu_close, 1199 .write = iuu_uart_write, 1200 .read_bulk_callback = iuu_uart_read_callback, 1201 .tiocmget = iuu_tiocmget, 1202 .tiocmset = iuu_tiocmset, 1203 .set_termios = iuu_set_termios, 1204 .attach = iuu_startup, 1205 .shutdown = iuu_shutdown, 1206 }; 1207 1208 static int __init iuu_init(void) 1209 { 1210 int retval; 1211 retval = usb_serial_register(&iuu_device); 1212 if (retval) 1213 goto failed_usb_serial_register; 1214 retval = usb_register(&iuu_driver); 1215 if (retval) 1216 goto failed_usb_register; 1217 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" 1218 DRIVER_DESC "\n"); 1219 return 0; 1220 failed_usb_register: 1221 usb_serial_deregister(&iuu_device); 1222 failed_usb_serial_register: 1223 return retval; 1224 } 1225 1226 static void __exit iuu_exit(void) 1227 { 1228 usb_deregister(&iuu_driver); 1229 usb_serial_deregister(&iuu_device); 1230 } 1231 1232 module_init(iuu_init); 1233 module_exit(iuu_exit); 1234 1235 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com"); 1236 1237 MODULE_DESCRIPTION(DRIVER_DESC); 1238 MODULE_LICENSE("GPL"); 1239 1240 MODULE_VERSION(DRIVER_VERSION); 1241 module_param(debug, bool, S_IRUGO | S_IWUSR); 1242 MODULE_PARM_DESC(debug, "Debug enabled or not"); 1243 1244 module_param(xmas, bool, S_IRUGO | S_IWUSR); 1245 MODULE_PARM_DESC(xmas, "xmas color enabled or not"); 1246 1247 module_param(boost, int, S_IRUGO | S_IWUSR); 1248 MODULE_PARM_DESC(boost, "overclock boost percent 100 to 500"); 1249 1250 module_param(clockmode, int, S_IRUGO | S_IWUSR); 1251 MODULE_PARM_DESC(clockmode, "1=3Mhz579,2=3Mhz680,3=6Mhz"); 1252 1253 module_param(cdmode, int, S_IRUGO | S_IWUSR); 1254 MODULE_PARM_DESC(cdmode, "Card detect mode 0=none, 1=CD, 2=!CD, 3=DSR, " 1255 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING"); 1256