1 /* 2 * Infinity Unlimited USB Phoenix driver 3 * 4 * Copyright (C) 2010 James Courtier-Dutton (James@superbug.co.uk) 5 6 * Copyright (C) 2007 Alain Degreffe (eczema@ecze.com) 7 * 8 * Original code taken from iuutool (Copyright (C) 2006 Juan Carlos Borrás) 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * And tested with help of WB Electronics 16 * 17 */ 18 #include <linux/kernel.h> 19 #include <linux/errno.h> 20 #include <linux/init.h> 21 #include <linux/slab.h> 22 #include <linux/tty.h> 23 #include <linux/tty_driver.h> 24 #include <linux/tty_flip.h> 25 #include <linux/serial.h> 26 #include <linux/module.h> 27 #include <linux/moduleparam.h> 28 #include <linux/spinlock.h> 29 #include <linux/uaccess.h> 30 #include <linux/usb.h> 31 #include <linux/usb/serial.h> 32 #include "iuu_phoenix.h" 33 #include <linux/random.h> 34 35 36 #ifdef CONFIG_USB_SERIAL_DEBUG 37 static int debug = 1; 38 #else 39 static int debug; 40 #endif 41 42 /* 43 * Version Information 44 */ 45 #define DRIVER_VERSION "v0.12" 46 #define DRIVER_DESC "Infinity USB Unlimited Phoenix driver" 47 48 static const struct usb_device_id id_table[] = { 49 {USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)}, 50 {} /* Terminating entry */ 51 }; 52 MODULE_DEVICE_TABLE(usb, id_table); 53 54 static struct usb_driver iuu_driver = { 55 .name = "iuu_phoenix", 56 .probe = usb_serial_probe, 57 .disconnect = usb_serial_disconnect, 58 .id_table = id_table, 59 .no_dynamic_id = 1, 60 }; 61 62 /* turbo parameter */ 63 static int boost = 100; 64 static int clockmode = 1; 65 static int cdmode = 1; 66 static int iuu_cardin; 67 static int iuu_cardout; 68 static int xmas; 69 static int vcc_default = 5; 70 71 static void read_rxcmd_callback(struct urb *urb); 72 73 struct iuu_private { 74 spinlock_t lock; /* store irq state */ 75 wait_queue_head_t delta_msr_wait; 76 u8 line_status; 77 int tiostatus; /* store IUART SIGNAL for tiocmget call */ 78 u8 reset; /* if 1 reset is needed */ 79 int poll; /* number of poll */ 80 u8 *writebuf; /* buffer for writing to device */ 81 int writelen; /* num of byte to write to device */ 82 u8 *buf; /* used for initialize speed */ 83 u8 *dbgbuf; /* debug buffer */ 84 u8 len; 85 int vcc; /* vcc (either 3 or 5 V) */ 86 u32 baud; 87 u32 boost; 88 u32 clk; 89 }; 90 91 92 static void iuu_free_buf(struct iuu_private *priv) 93 { 94 kfree(priv->buf); 95 kfree(priv->dbgbuf); 96 kfree(priv->writebuf); 97 } 98 99 static int iuu_alloc_buf(struct iuu_private *priv) 100 { 101 priv->buf = kzalloc(256, GFP_KERNEL); 102 priv->dbgbuf = kzalloc(256, GFP_KERNEL); 103 priv->writebuf = kzalloc(256, GFP_KERNEL); 104 if (!priv->buf || !priv->dbgbuf || !priv->writebuf) { 105 iuu_free_buf(priv); 106 dbg("%s problem allocation buffer", __func__); 107 return -ENOMEM; 108 } 109 dbg("%s - Privates buffers allocation success", __func__); 110 return 0; 111 } 112 113 static int iuu_startup(struct usb_serial *serial) 114 { 115 struct iuu_private *priv; 116 priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL); 117 dbg("%s- priv allocation success", __func__); 118 if (!priv) 119 return -ENOMEM; 120 if (iuu_alloc_buf(priv)) { 121 kfree(priv); 122 return -ENOMEM; 123 } 124 priv->vcc = vcc_default; 125 spin_lock_init(&priv->lock); 126 init_waitqueue_head(&priv->delta_msr_wait); 127 usb_set_serial_port_data(serial->port[0], priv); 128 return 0; 129 } 130 131 /* Release function */ 132 static void iuu_release(struct usb_serial *serial) 133 { 134 struct usb_serial_port *port = serial->port[0]; 135 struct iuu_private *priv = usb_get_serial_port_data(port); 136 if (!port) 137 return; 138 139 dbg("%s", __func__); 140 141 if (priv) { 142 iuu_free_buf(priv); 143 dbg("%s - I will free all", __func__); 144 usb_set_serial_port_data(port, NULL); 145 146 dbg("%s - priv is not anymore in port structure", __func__); 147 kfree(priv); 148 149 dbg("%s priv is now kfree", __func__); 150 } 151 } 152 153 static int iuu_tiocmset(struct tty_struct *tty, struct file *file, 154 unsigned int set, unsigned int clear) 155 { 156 struct usb_serial_port *port = tty->driver_data; 157 struct iuu_private *priv = usb_get_serial_port_data(port); 158 unsigned long flags; 159 160 /* FIXME: locking on tiomstatus */ 161 dbg("%s (%d) msg : SET = 0x%04x, CLEAR = 0x%04x ", __func__, 162 port->number, set, clear); 163 164 spin_lock_irqsave(&priv->lock, flags); 165 166 if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) { 167 dbg("%s TIOCMSET RESET called !!!", __func__); 168 priv->reset = 1; 169 } 170 if (set & TIOCM_RTS) 171 priv->tiostatus = TIOCM_RTS; 172 173 spin_unlock_irqrestore(&priv->lock, flags); 174 return 0; 175 } 176 177 /* This is used to provide a carrier detect mechanism 178 * When a card is present, the response is 0x00 179 * When no card , the reader respond with TIOCM_CD 180 * This is known as CD autodetect mechanism 181 */ 182 static int iuu_tiocmget(struct tty_struct *tty, struct file *file) 183 { 184 struct usb_serial_port *port = tty->driver_data; 185 struct iuu_private *priv = usb_get_serial_port_data(port); 186 unsigned long flags; 187 int rc; 188 189 spin_lock_irqsave(&priv->lock, flags); 190 rc = priv->tiostatus; 191 spin_unlock_irqrestore(&priv->lock, flags); 192 193 return rc; 194 } 195 196 static void iuu_rxcmd(struct urb *urb) 197 { 198 struct usb_serial_port *port = urb->context; 199 int result; 200 int status = urb->status; 201 202 dbg("%s - enter", __func__); 203 204 if (status) { 205 dbg("%s - status = %d", __func__, status); 206 /* error stop all */ 207 return; 208 } 209 210 211 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 212 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 213 usb_sndbulkpipe(port->serial->dev, 214 port->bulk_out_endpointAddress), 215 port->write_urb->transfer_buffer, 1, 216 read_rxcmd_callback, port); 217 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 218 } 219 220 static int iuu_reset(struct usb_serial_port *port, u8 wt) 221 { 222 struct iuu_private *priv = usb_get_serial_port_data(port); 223 int result; 224 char *buf_ptr = port->write_urb->transfer_buffer; 225 dbg("%s - enter", __func__); 226 227 /* Prepare the reset sequence */ 228 229 *buf_ptr++ = IUU_RST_SET; 230 *buf_ptr++ = IUU_DELAY_MS; 231 *buf_ptr++ = wt; 232 *buf_ptr = IUU_RST_CLEAR; 233 234 /* send the sequence */ 235 236 usb_fill_bulk_urb(port->write_urb, 237 port->serial->dev, 238 usb_sndbulkpipe(port->serial->dev, 239 port->bulk_out_endpointAddress), 240 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port); 241 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 242 priv->reset = 0; 243 return result; 244 } 245 246 /* Status Function 247 * Return value is 248 * 0x00 = no card 249 * 0x01 = smartcard 250 * 0x02 = sim card 251 */ 252 static void iuu_update_status_callback(struct urb *urb) 253 { 254 struct usb_serial_port *port = urb->context; 255 struct iuu_private *priv = usb_get_serial_port_data(port); 256 u8 *st; 257 int status = urb->status; 258 259 dbg("%s - enter", __func__); 260 261 if (status) { 262 dbg("%s - status = %d", __func__, status); 263 /* error stop all */ 264 return; 265 } 266 267 st = urb->transfer_buffer; 268 dbg("%s - enter", __func__); 269 if (urb->actual_length == 1) { 270 switch (st[0]) { 271 case 0x1: 272 priv->tiostatus = iuu_cardout; 273 break; 274 case 0x0: 275 priv->tiostatus = iuu_cardin; 276 break; 277 default: 278 priv->tiostatus = iuu_cardin; 279 } 280 } 281 iuu_rxcmd(urb); 282 } 283 284 static void iuu_status_callback(struct urb *urb) 285 { 286 struct usb_serial_port *port = urb->context; 287 int result; 288 int status = urb->status; 289 290 dbg("%s - status = %d", __func__, status); 291 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 292 usb_rcvbulkpipe(port->serial->dev, 293 port->bulk_in_endpointAddress), 294 port->read_urb->transfer_buffer, 256, 295 iuu_update_status_callback, port); 296 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 297 } 298 299 static int iuu_status(struct usb_serial_port *port) 300 { 301 int result; 302 303 dbg("%s - enter", __func__); 304 305 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1); 306 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 307 usb_sndbulkpipe(port->serial->dev, 308 port->bulk_out_endpointAddress), 309 port->write_urb->transfer_buffer, 1, 310 iuu_status_callback, port); 311 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 312 return result; 313 314 } 315 316 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count) 317 { 318 int status; 319 struct usb_serial *serial = port->serial; 320 int actual = 0; 321 322 dbg("%s - enter", __func__); 323 324 /* send the data out the bulk port */ 325 326 status = 327 usb_bulk_msg(serial->dev, 328 usb_sndbulkpipe(serial->dev, 329 port->bulk_out_endpointAddress), buf, 330 count, &actual, HZ * 1); 331 332 if (status != IUU_OPERATION_OK) 333 dbg("%s - error = %2x", __func__, status); 334 else 335 dbg("%s - write OK !", __func__); 336 return status; 337 } 338 339 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count) 340 { 341 int status; 342 struct usb_serial *serial = port->serial; 343 int actual = 0; 344 345 dbg("%s - enter", __func__); 346 347 /* send the data out the bulk port */ 348 349 status = 350 usb_bulk_msg(serial->dev, 351 usb_rcvbulkpipe(serial->dev, 352 port->bulk_in_endpointAddress), buf, 353 count, &actual, HZ * 1); 354 355 if (status != IUU_OPERATION_OK) 356 dbg("%s - error = %2x", __func__, status); 357 else 358 dbg("%s - read OK !", __func__); 359 return status; 360 } 361 362 static int iuu_led(struct usb_serial_port *port, unsigned int R, 363 unsigned int G, unsigned int B, u8 f) 364 { 365 int status; 366 u8 *buf; 367 buf = kmalloc(8, GFP_KERNEL); 368 if (!buf) 369 return -ENOMEM; 370 371 dbg("%s - enter", __func__); 372 373 buf[0] = IUU_SET_LED; 374 buf[1] = R & 0xFF; 375 buf[2] = (R >> 8) & 0xFF; 376 buf[3] = G & 0xFF; 377 buf[4] = (G >> 8) & 0xFF; 378 buf[5] = B & 0xFF; 379 buf[6] = (B >> 8) & 0xFF; 380 buf[7] = f; 381 status = bulk_immediate(port, buf, 8); 382 kfree(buf); 383 if (status != IUU_OPERATION_OK) 384 dbg("%s - led error status = %2x", __func__, status); 385 else 386 dbg("%s - led OK !", __func__); 387 return IUU_OPERATION_OK; 388 } 389 390 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1, 391 u8 b2, u8 freq) 392 { 393 *buf++ = IUU_SET_LED; 394 *buf++ = r1; 395 *buf++ = r2; 396 *buf++ = g1; 397 *buf++ = g2; 398 *buf++ = b1; 399 *buf++ = b2; 400 *buf = freq; 401 } 402 403 static void iuu_led_activity_on(struct urb *urb) 404 { 405 struct usb_serial_port *port = urb->context; 406 int result; 407 char *buf_ptr = port->write_urb->transfer_buffer; 408 *buf_ptr++ = IUU_SET_LED; 409 if (xmas == 1) { 410 get_random_bytes(buf_ptr, 6); 411 *(buf_ptr+7) = 1; 412 } else { 413 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255); 414 } 415 416 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 417 usb_sndbulkpipe(port->serial->dev, 418 port->bulk_out_endpointAddress), 419 port->write_urb->transfer_buffer, 8 , 420 iuu_rxcmd, port); 421 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 422 } 423 424 static void iuu_led_activity_off(struct urb *urb) 425 { 426 struct usb_serial_port *port = urb->context; 427 int result; 428 char *buf_ptr = port->write_urb->transfer_buffer; 429 if (xmas == 1) { 430 iuu_rxcmd(urb); 431 return; 432 } else { 433 *buf_ptr++ = IUU_SET_LED; 434 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255); 435 } 436 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 437 usb_sndbulkpipe(port->serial->dev, 438 port->bulk_out_endpointAddress), 439 port->write_urb->transfer_buffer, 8 , 440 iuu_rxcmd, port); 441 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 442 } 443 444 445 446 static int iuu_clk(struct usb_serial_port *port, int dwFrq) 447 { 448 int status; 449 struct iuu_private *priv = usb_get_serial_port_data(port); 450 int Count = 0; 451 u8 FrqGenAdr = 0x69; 452 u8 DIV = 0; /* 8bit */ 453 u8 XDRV = 0; /* 8bit */ 454 u8 PUMP = 0; /* 3bit */ 455 u8 PBmsb = 0; /* 2bit */ 456 u8 PBlsb = 0; /* 8bit */ 457 u8 PO = 0; /* 1bit */ 458 u8 Q = 0; /* 7bit */ 459 /* 24bit = 3bytes */ 460 unsigned int P = 0; 461 unsigned int P2 = 0; 462 int frq = (int)dwFrq; 463 464 dbg("%s - enter", __func__); 465 466 if (frq == 0) { 467 priv->buf[Count++] = IUU_UART_WRITE_I2C; 468 priv->buf[Count++] = FrqGenAdr << 1; 469 priv->buf[Count++] = 0x09; 470 priv->buf[Count++] = 0x00; 471 472 status = bulk_immediate(port, (u8 *) priv->buf, Count); 473 if (status != 0) { 474 dbg("%s - write error ", __func__); 475 return status; 476 } 477 } else if (frq == 3579000) { 478 DIV = 100; 479 P = 1193; 480 Q = 40; 481 XDRV = 0; 482 } else if (frq == 3680000) { 483 DIV = 105; 484 P = 161; 485 Q = 5; 486 XDRV = 0; 487 } else if (frq == 6000000) { 488 DIV = 66; 489 P = 66; 490 Q = 2; 491 XDRV = 0x28; 492 } else { 493 unsigned int result = 0; 494 unsigned int tmp = 0; 495 unsigned int check; 496 unsigned int check2; 497 char found = 0x00; 498 unsigned int lQ = 2; 499 unsigned int lP = 2055; 500 unsigned int lDiv = 4; 501 502 for (lQ = 2; lQ <= 47 && !found; lQ++) 503 for (lP = 2055; lP >= 8 && !found; lP--) 504 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) { 505 tmp = (12000000 / lDiv) * (lP / lQ); 506 if (abs((int)(tmp - frq)) < 507 abs((int)(frq - result))) { 508 check2 = (12000000 / lQ); 509 if (check2 < 250000) 510 continue; 511 check = (12000000 / lQ) * lP; 512 if (check > 400000000) 513 continue; 514 if (check < 100000000) 515 continue; 516 if (lDiv < 4 || lDiv > 127) 517 continue; 518 result = tmp; 519 P = lP; 520 DIV = lDiv; 521 Q = lQ; 522 if (result == frq) 523 found = 0x01; 524 } 525 } 526 } 527 P2 = ((P - PO) / 2) - 4; 528 DIV = DIV; 529 PUMP = 0x04; 530 PBmsb = (P2 >> 8 & 0x03); 531 PBlsb = P2 & 0xFF; 532 PO = (P >> 10) & 0x01; 533 Q = Q - 2; 534 535 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 536 priv->buf[Count++] = FrqGenAdr << 1; 537 priv->buf[Count++] = 0x09; 538 priv->buf[Count++] = 0x20; /* Adr = 0x09 */ 539 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 540 priv->buf[Count++] = FrqGenAdr << 1; 541 priv->buf[Count++] = 0x0C; 542 priv->buf[Count++] = DIV; /* Adr = 0x0C */ 543 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 544 priv->buf[Count++] = FrqGenAdr << 1; 545 priv->buf[Count++] = 0x12; 546 priv->buf[Count++] = XDRV; /* Adr = 0x12 */ 547 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 548 priv->buf[Count++] = FrqGenAdr << 1; 549 priv->buf[Count++] = 0x13; 550 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */ 551 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 552 priv->buf[Count++] = FrqGenAdr << 1; 553 priv->buf[Count++] = 0x40; 554 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) | 555 (PBmsb & 0x03); /* Adr = 0x40 */ 556 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 557 priv->buf[Count++] = FrqGenAdr << 1; 558 priv->buf[Count++] = 0x41; 559 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */ 560 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 561 priv->buf[Count++] = FrqGenAdr << 1; 562 priv->buf[Count++] = 0x42; 563 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */ 564 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 565 priv->buf[Count++] = FrqGenAdr << 1; 566 priv->buf[Count++] = 0x44; 567 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */ 568 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 569 priv->buf[Count++] = FrqGenAdr << 1; 570 priv->buf[Count++] = 0x45; 571 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */ 572 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 573 priv->buf[Count++] = FrqGenAdr << 1; 574 priv->buf[Count++] = 0x46; 575 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */ 576 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 577 priv->buf[Count++] = FrqGenAdr << 1; 578 priv->buf[Count++] = 0x47; 579 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */ 580 581 status = bulk_immediate(port, (u8 *) priv->buf, Count); 582 if (status != IUU_OPERATION_OK) 583 dbg("%s - write error ", __func__); 584 return status; 585 } 586 587 static int iuu_uart_flush(struct usb_serial_port *port) 588 { 589 int i; 590 int status; 591 u8 rxcmd = IUU_UART_RX; 592 struct iuu_private *priv = usb_get_serial_port_data(port); 593 594 dbg("%s - enter", __func__); 595 596 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0) 597 return -EIO; 598 599 for (i = 0; i < 2; i++) { 600 status = bulk_immediate(port, &rxcmd, 1); 601 if (status != IUU_OPERATION_OK) { 602 dbg("%s - uart_flush_write error", __func__); 603 return status; 604 } 605 606 status = read_immediate(port, &priv->len, 1); 607 if (status != IUU_OPERATION_OK) { 608 dbg("%s - uart_flush_read error", __func__); 609 return status; 610 } 611 612 if (priv->len > 0) { 613 dbg("%s - uart_flush datalen is : %i ", __func__, 614 priv->len); 615 status = read_immediate(port, priv->buf, priv->len); 616 if (status != IUU_OPERATION_OK) { 617 dbg("%s - uart_flush_read error", __func__); 618 return status; 619 } 620 } 621 } 622 dbg("%s - uart_flush_read OK!", __func__); 623 iuu_led(port, 0, 0xF000, 0, 0xFF); 624 return status; 625 } 626 627 static void read_buf_callback(struct urb *urb) 628 { 629 struct usb_serial_port *port = urb->context; 630 unsigned char *data = urb->transfer_buffer; 631 struct tty_struct *tty; 632 int status = urb->status; 633 634 dbg("%s - status = %d", __func__, status); 635 636 if (status) { 637 if (status == -EPROTO) { 638 /* reschedule needed */ 639 } 640 return; 641 } 642 643 dbg("%s - %i chars to write", __func__, urb->actual_length); 644 tty = tty_port_tty_get(&port->port); 645 if (data == NULL) 646 dbg("%s - data is NULL !!!", __func__); 647 if (tty && urb->actual_length && data) { 648 tty_insert_flip_string(tty, data, urb->actual_length); 649 tty_flip_buffer_push(tty); 650 } 651 tty_kref_put(tty); 652 iuu_led_activity_on(urb); 653 } 654 655 static int iuu_bulk_write(struct usb_serial_port *port) 656 { 657 struct iuu_private *priv = usb_get_serial_port_data(port); 658 unsigned long flags; 659 int result; 660 int i; 661 int buf_len; 662 char *buf_ptr = port->write_urb->transfer_buffer; 663 dbg("%s - enter", __func__); 664 665 spin_lock_irqsave(&priv->lock, flags); 666 *buf_ptr++ = IUU_UART_ESC; 667 *buf_ptr++ = IUU_UART_TX; 668 *buf_ptr++ = priv->writelen; 669 670 memcpy(buf_ptr, priv->writebuf, priv->writelen); 671 buf_len = priv->writelen; 672 priv->writelen = 0; 673 spin_unlock_irqrestore(&priv->lock, flags); 674 if (debug == 1) { 675 for (i = 0; i < buf_len; i++) 676 sprintf(priv->dbgbuf + i*2 , 677 "%02X", priv->writebuf[i]); 678 priv->dbgbuf[buf_len+i*2] = 0; 679 dbg("%s - writing %i chars : %s", __func__, 680 buf_len, priv->dbgbuf); 681 } 682 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 683 usb_sndbulkpipe(port->serial->dev, 684 port->bulk_out_endpointAddress), 685 port->write_urb->transfer_buffer, buf_len + 3, 686 iuu_rxcmd, port); 687 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 688 usb_serial_port_softint(port); 689 return result; 690 } 691 692 static int iuu_read_buf(struct usb_serial_port *port, int len) 693 { 694 int result; 695 dbg("%s - enter", __func__); 696 697 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 698 usb_rcvbulkpipe(port->serial->dev, 699 port->bulk_in_endpointAddress), 700 port->read_urb->transfer_buffer, len, 701 read_buf_callback, port); 702 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 703 return result; 704 } 705 706 static void iuu_uart_read_callback(struct urb *urb) 707 { 708 struct usb_serial_port *port = urb->context; 709 struct iuu_private *priv = usb_get_serial_port_data(port); 710 unsigned long flags; 711 int status = urb->status; 712 int error = 0; 713 int len = 0; 714 unsigned char *data = urb->transfer_buffer; 715 priv->poll++; 716 717 dbg("%s - enter", __func__); 718 719 if (status) { 720 dbg("%s - status = %d", __func__, status); 721 /* error stop all */ 722 return; 723 } 724 if (data == NULL) 725 dbg("%s - data is NULL !!!", __func__); 726 727 if (urb->actual_length == 1 && data != NULL) 728 len = (int) data[0]; 729 730 if (urb->actual_length > 1) { 731 dbg("%s - urb->actual_length = %i", __func__, 732 urb->actual_length); 733 error = 1; 734 return; 735 } 736 /* if len > 0 call readbuf */ 737 738 if (len > 0 && error == 0) { 739 dbg("%s - call read buf - len to read is %i ", 740 __func__, len); 741 status = iuu_read_buf(port, len); 742 return; 743 } 744 /* need to update status ? */ 745 if (priv->poll > 99) { 746 status = iuu_status(port); 747 priv->poll = 0; 748 return; 749 } 750 751 /* reset waiting ? */ 752 753 if (priv->reset == 1) { 754 status = iuu_reset(port, 0xC); 755 return; 756 } 757 /* Writebuf is waiting */ 758 spin_lock_irqsave(&priv->lock, flags); 759 if (priv->writelen > 0) { 760 spin_unlock_irqrestore(&priv->lock, flags); 761 status = iuu_bulk_write(port); 762 return; 763 } 764 spin_unlock_irqrestore(&priv->lock, flags); 765 /* if nothing to write call again rxcmd */ 766 dbg("%s - rxcmd recall", __func__); 767 iuu_led_activity_off(urb); 768 } 769 770 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port, 771 const u8 *buf, int count) 772 { 773 struct iuu_private *priv = usb_get_serial_port_data(port); 774 unsigned long flags; 775 dbg("%s - enter", __func__); 776 777 if (count > 256) 778 return -ENOMEM; 779 780 spin_lock_irqsave(&priv->lock, flags); 781 782 /* fill the buffer */ 783 memcpy(priv->writebuf + priv->writelen, buf, count); 784 priv->writelen += count; 785 spin_unlock_irqrestore(&priv->lock, flags); 786 787 return count; 788 } 789 790 static void read_rxcmd_callback(struct urb *urb) 791 { 792 struct usb_serial_port *port = urb->context; 793 int result; 794 int status = urb->status; 795 796 dbg("%s - status = %d", __func__, status); 797 798 if (status) { 799 /* error stop all */ 800 return; 801 } 802 803 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 804 usb_rcvbulkpipe(port->serial->dev, 805 port->bulk_in_endpointAddress), 806 port->read_urb->transfer_buffer, 256, 807 iuu_uart_read_callback, port); 808 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 809 dbg("%s - submit result = %d", __func__, result); 810 return; 811 } 812 813 static int iuu_uart_on(struct usb_serial_port *port) 814 { 815 int status; 816 u8 *buf; 817 818 buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL); 819 820 if (!buf) 821 return -ENOMEM; 822 823 buf[0] = IUU_UART_ENABLE; 824 buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF); 825 buf[2] = (u8) (0x00FF & IUU_BAUD_9600); 826 buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN); 827 828 status = bulk_immediate(port, buf, 4); 829 if (status != IUU_OPERATION_OK) { 830 dbg("%s - uart_on error", __func__); 831 goto uart_enable_failed; 832 } 833 /* iuu_reset() the card after iuu_uart_on() */ 834 status = iuu_uart_flush(port); 835 if (status != IUU_OPERATION_OK) 836 dbg("%s - uart_flush error", __func__); 837 uart_enable_failed: 838 kfree(buf); 839 return status; 840 } 841 842 /* Diables the IUU UART (a.k.a. the Phoenix voiderface) */ 843 static int iuu_uart_off(struct usb_serial_port *port) 844 { 845 int status; 846 u8 *buf; 847 buf = kmalloc(1, GFP_KERNEL); 848 if (!buf) 849 return -ENOMEM; 850 buf[0] = IUU_UART_DISABLE; 851 852 status = bulk_immediate(port, buf, 1); 853 if (status != IUU_OPERATION_OK) 854 dbg("%s - uart_off error", __func__); 855 856 kfree(buf); 857 return status; 858 } 859 860 static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base, 861 u32 *actual, u8 parity) 862 { 863 int status; 864 u32 baud; 865 u8 *dataout; 866 u8 DataCount = 0; 867 u8 T1Frekvens = 0; 868 u8 T1reload = 0; 869 unsigned int T1FrekvensHZ = 0; 870 871 dbg("%s - enter baud_base=%d", __func__, baud_base); 872 dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL); 873 874 if (!dataout) 875 return -ENOMEM; 876 /*baud = (((priv->clk / 35) * baud_base) / 100000); */ 877 baud = baud_base; 878 879 if (baud < 1200 || baud > 230400) { 880 kfree(dataout); 881 return IUU_INVALID_PARAMETER; 882 } 883 if (baud > 977) { 884 T1Frekvens = 3; 885 T1FrekvensHZ = 500000; 886 } 887 888 if (baud > 3906) { 889 T1Frekvens = 2; 890 T1FrekvensHZ = 2000000; 891 } 892 893 if (baud > 11718) { 894 T1Frekvens = 1; 895 T1FrekvensHZ = 6000000; 896 } 897 898 if (baud > 46875) { 899 T1Frekvens = 0; 900 T1FrekvensHZ = 24000000; 901 } 902 903 T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2)); 904 905 /* magic number here: ENTER_FIRMWARE_UPDATE; */ 906 dataout[DataCount++] = IUU_UART_ESC; 907 /* magic number here: CHANGE_BAUD; */ 908 dataout[DataCount++] = IUU_UART_CHANGE; 909 dataout[DataCount++] = T1Frekvens; 910 dataout[DataCount++] = T1reload; 911 912 *actual = (T1FrekvensHZ / (256 - T1reload)) / 2; 913 914 switch (parity & 0x0F) { 915 case IUU_PARITY_NONE: 916 dataout[DataCount++] = 0x00; 917 break; 918 case IUU_PARITY_EVEN: 919 dataout[DataCount++] = 0x01; 920 break; 921 case IUU_PARITY_ODD: 922 dataout[DataCount++] = 0x02; 923 break; 924 case IUU_PARITY_MARK: 925 dataout[DataCount++] = 0x03; 926 break; 927 case IUU_PARITY_SPACE: 928 dataout[DataCount++] = 0x04; 929 break; 930 default: 931 kfree(dataout); 932 return IUU_INVALID_PARAMETER; 933 break; 934 } 935 936 switch (parity & 0xF0) { 937 case IUU_ONE_STOP_BIT: 938 dataout[DataCount - 1] |= IUU_ONE_STOP_BIT; 939 break; 940 941 case IUU_TWO_STOP_BITS: 942 dataout[DataCount - 1] |= IUU_TWO_STOP_BITS; 943 break; 944 default: 945 kfree(dataout); 946 return IUU_INVALID_PARAMETER; 947 break; 948 } 949 950 status = bulk_immediate(port, dataout, DataCount); 951 if (status != IUU_OPERATION_OK) 952 dbg("%s - uart_off error", __func__); 953 kfree(dataout); 954 return status; 955 } 956 957 static void iuu_set_termios(struct tty_struct *tty, 958 struct usb_serial_port *port, struct ktermios *old_termios) 959 { 960 const u32 supported_mask = CMSPAR|PARENB|PARODD; 961 struct iuu_private *priv = usb_get_serial_port_data(port); 962 unsigned int cflag = tty->termios->c_cflag; 963 int status; 964 u32 actual; 965 u32 parity; 966 int csize = CS7; 967 int baud; 968 u32 newval = cflag & supported_mask; 969 970 /* Just use the ospeed. ispeed should be the same. */ 971 baud = tty->termios->c_ospeed; 972 973 dbg("%s - enter c_ospeed or baud=%d", __func__, baud); 974 975 /* compute the parity parameter */ 976 parity = 0; 977 if (cflag & CMSPAR) { /* Using mark space */ 978 if (cflag & PARODD) 979 parity |= IUU_PARITY_SPACE; 980 else 981 parity |= IUU_PARITY_MARK; 982 } else if (!(cflag & PARENB)) { 983 parity |= IUU_PARITY_NONE; 984 csize = CS8; 985 } else if (cflag & PARODD) 986 parity |= IUU_PARITY_ODD; 987 else 988 parity |= IUU_PARITY_EVEN; 989 990 parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT); 991 992 /* set it */ 993 status = iuu_uart_baud(port, 994 baud * priv->boost / 100, 995 &actual, parity); 996 997 /* set the termios value to the real one, so the user now what has 998 * changed. We support few fields so its easies to copy the old hw 999 * settings back over and then adjust them 1000 */ 1001 if (old_termios) 1002 tty_termios_copy_hw(tty->termios, old_termios); 1003 if (status != 0) /* Set failed - return old bits */ 1004 return; 1005 /* Re-encode speed, parity and csize */ 1006 tty_encode_baud_rate(tty, baud, baud); 1007 tty->termios->c_cflag &= ~(supported_mask|CSIZE); 1008 tty->termios->c_cflag |= newval | csize; 1009 } 1010 1011 static void iuu_close(struct usb_serial_port *port) 1012 { 1013 /* iuu_led (port,255,0,0,0); */ 1014 struct usb_serial *serial; 1015 1016 serial = port->serial; 1017 if (!serial) 1018 return; 1019 1020 dbg("%s - port %d", __func__, port->number); 1021 1022 iuu_uart_off(port); 1023 if (serial->dev) { 1024 /* free writebuf */ 1025 /* shutdown our urbs */ 1026 dbg("%s - shutting down urbs", __func__); 1027 usb_kill_urb(port->write_urb); 1028 usb_kill_urb(port->read_urb); 1029 usb_kill_urb(port->interrupt_in_urb); 1030 iuu_led(port, 0, 0, 0xF000, 0xFF); 1031 } 1032 } 1033 1034 static void iuu_init_termios(struct tty_struct *tty) 1035 { 1036 dbg("%s - enter", __func__); 1037 *(tty->termios) = tty_std_termios; 1038 tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600 1039 | TIOCM_CTS | CSTOPB | PARENB; 1040 tty->termios->c_ispeed = 9600; 1041 tty->termios->c_ospeed = 9600; 1042 tty->termios->c_lflag = 0; 1043 tty->termios->c_oflag = 0; 1044 tty->termios->c_iflag = 0; 1045 } 1046 1047 static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port) 1048 { 1049 struct usb_serial *serial = port->serial; 1050 u8 *buf; 1051 int result; 1052 int baud; 1053 u32 actual; 1054 struct iuu_private *priv = usb_get_serial_port_data(port); 1055 1056 baud = tty->termios->c_ospeed; 1057 tty->termios->c_ispeed = baud; 1058 /* Re-encode speed */ 1059 tty_encode_baud_rate(tty, baud, baud); 1060 1061 dbg("%s - port %d, baud %d", __func__, port->number, baud); 1062 usb_clear_halt(serial->dev, port->write_urb->pipe); 1063 usb_clear_halt(serial->dev, port->read_urb->pipe); 1064 1065 buf = kmalloc(10, GFP_KERNEL); 1066 if (buf == NULL) 1067 return -ENOMEM; 1068 1069 priv->poll = 0; 1070 1071 /* initialize writebuf */ 1072 #define FISH(a, b, c, d) do { \ 1073 result = usb_control_msg(port->serial->dev, \ 1074 usb_rcvctrlpipe(port->serial->dev, 0), \ 1075 b, a, c, d, buf, 1, 1000); \ 1076 dbg("0x%x:0x%x:0x%x:0x%x %d - %x", a, b, c, d, result, \ 1077 buf[0]); } while (0); 1078 1079 #define SOUP(a, b, c, d) do { \ 1080 result = usb_control_msg(port->serial->dev, \ 1081 usb_sndctrlpipe(port->serial->dev, 0), \ 1082 b, a, c, d, NULL, 0, 1000); \ 1083 dbg("0x%x:0x%x:0x%x:0x%x %d", a, b, c, d, result); } while (0) 1084 1085 /* This is not UART related but IUU USB driver related or something */ 1086 /* like that. Basically no IUU will accept any commands from the USB */ 1087 /* host unless it has received the following message */ 1088 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */ 1089 1090 SOUP(0x03, 0x02, 0x02, 0x0); 1091 kfree(buf); 1092 iuu_led(port, 0xF000, 0xF000, 0, 0xFF); 1093 iuu_uart_on(port); 1094 if (boost < 100) 1095 boost = 100; 1096 priv->boost = boost; 1097 priv->baud = baud; 1098 switch (clockmode) { 1099 case 2: /* 3.680 Mhz */ 1100 priv->clk = IUU_CLK_3680000; 1101 iuu_clk(port, IUU_CLK_3680000 * boost / 100); 1102 result = 1103 iuu_uart_baud(port, baud * boost / 100, &actual, 1104 IUU_PARITY_EVEN); 1105 break; 1106 case 3: /* 6.00 Mhz */ 1107 iuu_clk(port, IUU_CLK_6000000 * boost / 100); 1108 priv->clk = IUU_CLK_6000000; 1109 /* Ratio of 6000000 to 3500000 for baud 9600 */ 1110 result = 1111 iuu_uart_baud(port, 16457 * boost / 100, &actual, 1112 IUU_PARITY_EVEN); 1113 break; 1114 default: /* 3.579 Mhz */ 1115 iuu_clk(port, IUU_CLK_3579000 * boost / 100); 1116 priv->clk = IUU_CLK_3579000; 1117 result = 1118 iuu_uart_baud(port, baud * boost / 100, &actual, 1119 IUU_PARITY_EVEN); 1120 } 1121 1122 /* set the cardin cardout signals */ 1123 switch (cdmode) { 1124 case 0: 1125 iuu_cardin = 0; 1126 iuu_cardout = 0; 1127 break; 1128 case 1: 1129 iuu_cardin = TIOCM_CD; 1130 iuu_cardout = 0; 1131 break; 1132 case 2: 1133 iuu_cardin = 0; 1134 iuu_cardout = TIOCM_CD; 1135 break; 1136 case 3: 1137 iuu_cardin = TIOCM_DSR; 1138 iuu_cardout = 0; 1139 break; 1140 case 4: 1141 iuu_cardin = 0; 1142 iuu_cardout = TIOCM_DSR; 1143 break; 1144 case 5: 1145 iuu_cardin = TIOCM_CTS; 1146 iuu_cardout = 0; 1147 break; 1148 case 6: 1149 iuu_cardin = 0; 1150 iuu_cardout = TIOCM_CTS; 1151 break; 1152 case 7: 1153 iuu_cardin = TIOCM_RNG; 1154 iuu_cardout = 0; 1155 break; 1156 case 8: 1157 iuu_cardin = 0; 1158 iuu_cardout = TIOCM_RNG; 1159 } 1160 1161 iuu_uart_flush(port); 1162 1163 dbg("%s - initialization done", __func__); 1164 1165 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 1166 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1167 usb_sndbulkpipe(port->serial->dev, 1168 port->bulk_out_endpointAddress), 1169 port->write_urb->transfer_buffer, 1, 1170 read_rxcmd_callback, port); 1171 result = usb_submit_urb(port->write_urb, GFP_KERNEL); 1172 1173 if (result) { 1174 dev_err(&port->dev, "%s - failed submitting read urb," 1175 " error %d\n", __func__, result); 1176 iuu_close(port); 1177 return -EPROTO; 1178 } else { 1179 dbg("%s - rxcmd OK", __func__); 1180 } 1181 return result; 1182 } 1183 1184 /* how to change VCC */ 1185 static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc) 1186 { 1187 int status; 1188 u8 *buf; 1189 1190 buf = kmalloc(5, GFP_KERNEL); 1191 if (!buf) 1192 return -ENOMEM; 1193 1194 dbg("%s - enter", __func__); 1195 1196 buf[0] = IUU_SET_VCC; 1197 buf[1] = vcc & 0xFF; 1198 buf[2] = (vcc >> 8) & 0xFF; 1199 buf[3] = (vcc >> 16) & 0xFF; 1200 buf[4] = (vcc >> 24) & 0xFF; 1201 1202 status = bulk_immediate(port, buf, 5); 1203 kfree(buf); 1204 1205 if (status != IUU_OPERATION_OK) 1206 dbg("%s - vcc error status = %2x", __func__, status); 1207 else 1208 dbg("%s - vcc OK !", __func__); 1209 1210 return status; 1211 } 1212 1213 /* 1214 * Sysfs Attributes 1215 */ 1216 1217 static ssize_t show_vcc_mode(struct device *dev, 1218 struct device_attribute *attr, char *buf) 1219 { 1220 struct usb_serial_port *port = to_usb_serial_port(dev); 1221 struct iuu_private *priv = usb_get_serial_port_data(port); 1222 1223 return sprintf(buf, "%d\n", priv->vcc); 1224 } 1225 1226 static ssize_t store_vcc_mode(struct device *dev, 1227 struct device_attribute *attr, const char *buf, size_t count) 1228 { 1229 struct usb_serial_port *port = to_usb_serial_port(dev); 1230 struct iuu_private *priv = usb_get_serial_port_data(port); 1231 unsigned long v; 1232 1233 if (strict_strtoul(buf, 10, &v)) { 1234 dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n", 1235 __func__, buf); 1236 goto fail_store_vcc_mode; 1237 } 1238 1239 dbg("%s: setting vcc_mode = %ld", __func__, v); 1240 1241 if ((v != 3) && (v != 5)) { 1242 dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v); 1243 } else { 1244 iuu_vcc_set(port, v); 1245 priv->vcc = v; 1246 } 1247 fail_store_vcc_mode: 1248 return count; 1249 } 1250 1251 static DEVICE_ATTR(vcc_mode, S_IRUSR | S_IWUSR, show_vcc_mode, 1252 store_vcc_mode); 1253 1254 static int iuu_create_sysfs_attrs(struct usb_serial_port *port) 1255 { 1256 dbg("%s", __func__); 1257 1258 return device_create_file(&port->dev, &dev_attr_vcc_mode); 1259 } 1260 1261 static int iuu_remove_sysfs_attrs(struct usb_serial_port *port) 1262 { 1263 dbg("%s", __func__); 1264 1265 device_remove_file(&port->dev, &dev_attr_vcc_mode); 1266 return 0; 1267 } 1268 1269 /* 1270 * End Sysfs Attributes 1271 */ 1272 1273 static struct usb_serial_driver iuu_device = { 1274 .driver = { 1275 .owner = THIS_MODULE, 1276 .name = "iuu_phoenix", 1277 }, 1278 .id_table = id_table, 1279 .num_ports = 1, 1280 .bulk_in_size = 512, 1281 .bulk_out_size = 512, 1282 .port_probe = iuu_create_sysfs_attrs, 1283 .port_remove = iuu_remove_sysfs_attrs, 1284 .open = iuu_open, 1285 .close = iuu_close, 1286 .write = iuu_uart_write, 1287 .read_bulk_callback = iuu_uart_read_callback, 1288 .tiocmget = iuu_tiocmget, 1289 .tiocmset = iuu_tiocmset, 1290 .set_termios = iuu_set_termios, 1291 .init_termios = iuu_init_termios, 1292 .attach = iuu_startup, 1293 .release = iuu_release, 1294 }; 1295 1296 static int __init iuu_init(void) 1297 { 1298 int retval; 1299 retval = usb_serial_register(&iuu_device); 1300 if (retval) 1301 goto failed_usb_serial_register; 1302 retval = usb_register(&iuu_driver); 1303 if (retval) 1304 goto failed_usb_register; 1305 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" 1306 DRIVER_DESC "\n"); 1307 return 0; 1308 failed_usb_register: 1309 usb_serial_deregister(&iuu_device); 1310 failed_usb_serial_register: 1311 return retval; 1312 } 1313 1314 static void __exit iuu_exit(void) 1315 { 1316 usb_deregister(&iuu_driver); 1317 usb_serial_deregister(&iuu_device); 1318 } 1319 1320 module_init(iuu_init); 1321 module_exit(iuu_exit); 1322 1323 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com"); 1324 1325 MODULE_DESCRIPTION(DRIVER_DESC); 1326 MODULE_LICENSE("GPL"); 1327 1328 MODULE_VERSION(DRIVER_VERSION); 1329 module_param(debug, bool, S_IRUGO | S_IWUSR); 1330 MODULE_PARM_DESC(debug, "Debug enabled or not"); 1331 1332 module_param(xmas, bool, S_IRUGO | S_IWUSR); 1333 MODULE_PARM_DESC(xmas, "Xmas colors enabled or not"); 1334 1335 module_param(boost, int, S_IRUGO | S_IWUSR); 1336 MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)"); 1337 1338 module_param(clockmode, int, S_IRUGO | S_IWUSR); 1339 MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, " 1340 "3=6 Mhz)"); 1341 1342 module_param(cdmode, int, S_IRUGO | S_IWUSR); 1343 MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, " 1344 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)"); 1345 1346 module_param(vcc_default, int, S_IRUGO | S_IWUSR); 1347 MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 " 1348 "for 5V). Default to 5."); 1349