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