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 dbg("%s - enter", __func__); 194 195 if (urb->status) { 196 dbg("%s - urb->status = %d", __func__, urb->status); 197 /* error stop all */ 198 return; 199 } 200 201 202 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 203 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 204 usb_sndbulkpipe(port->serial->dev, 205 port->bulk_out_endpointAddress), 206 port->write_urb->transfer_buffer, 1, 207 read_rxcmd_callback, port); 208 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 209 } 210 211 static int iuu_reset(struct usb_serial_port *port, u8 wt) 212 { 213 struct iuu_private *priv = usb_get_serial_port_data(port); 214 int result; 215 char *buf_ptr = port->write_urb->transfer_buffer; 216 dbg("%s - enter", __func__); 217 218 /* Prepare the reset sequence */ 219 220 *buf_ptr++ = IUU_RST_SET; 221 *buf_ptr++ = IUU_DELAY_MS; 222 *buf_ptr++ = wt; 223 *buf_ptr = IUU_RST_CLEAR; 224 225 /* send the sequence */ 226 227 usb_fill_bulk_urb(port->write_urb, 228 port->serial->dev, 229 usb_sndbulkpipe(port->serial->dev, 230 port->bulk_out_endpointAddress), 231 port->write_urb->transfer_buffer, 4, iuu_rxcmd, port); 232 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 233 priv->reset = 0; 234 return result; 235 } 236 237 /* Status Function 238 * Return value is 239 * 0x00 = no card 240 * 0x01 = smartcard 241 * 0x02 = sim card 242 */ 243 static void iuu_update_status_callback(struct urb *urb) 244 { 245 struct usb_serial_port *port = urb->context; 246 struct iuu_private *priv = usb_get_serial_port_data(port); 247 u8 *st; 248 dbg("%s - enter", __func__); 249 250 if (urb->status) { 251 dbg("%s - urb->status = %d", __func__, urb->status); 252 /* error stop all */ 253 return; 254 } 255 256 st = urb->transfer_buffer; 257 dbg("%s - enter", __func__); 258 if (urb->actual_length == 1) { 259 switch (st[0]) { 260 case 0x1: 261 priv->tiostatus = iuu_cardout; 262 break; 263 case 0x0: 264 priv->tiostatus = iuu_cardin; 265 break; 266 default: 267 priv->tiostatus = iuu_cardin; 268 } 269 } 270 iuu_rxcmd(urb); 271 } 272 273 static void iuu_status_callback(struct urb *urb) 274 { 275 struct usb_serial_port *port = urb->context; 276 int result; 277 dbg("%s - enter", __func__); 278 279 dbg("%s - urb->status = %d", __func__, urb->status); 280 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 281 usb_rcvbulkpipe(port->serial->dev, 282 port->bulk_in_endpointAddress), 283 port->read_urb->transfer_buffer, 256, 284 iuu_update_status_callback, port); 285 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 286 } 287 288 static int iuu_status(struct usb_serial_port *port) 289 { 290 int result; 291 292 dbg("%s - enter", __func__); 293 294 memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1); 295 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 296 usb_sndbulkpipe(port->serial->dev, 297 port->bulk_out_endpointAddress), 298 port->write_urb->transfer_buffer, 1, 299 iuu_status_callback, port); 300 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 301 return result; 302 303 } 304 305 static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count) 306 { 307 int status; 308 struct usb_serial *serial = port->serial; 309 int actual = 0; 310 311 dbg("%s - enter", __func__); 312 313 /* send the data out the bulk port */ 314 315 status = 316 usb_bulk_msg(serial->dev, 317 usb_sndbulkpipe(serial->dev, 318 port->bulk_out_endpointAddress), buf, 319 count, &actual, HZ * 1); 320 321 if (status != IUU_OPERATION_OK) 322 dbg("%s - error = %2x", __func__, status); 323 else 324 dbg("%s - write OK !", __func__); 325 return status; 326 } 327 328 static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count) 329 { 330 int status; 331 struct usb_serial *serial = port->serial; 332 int actual = 0; 333 334 dbg("%s - enter", __func__); 335 336 /* send the data out the bulk port */ 337 338 status = 339 usb_bulk_msg(serial->dev, 340 usb_rcvbulkpipe(serial->dev, 341 port->bulk_in_endpointAddress), buf, 342 count, &actual, HZ * 1); 343 344 if (status != IUU_OPERATION_OK) 345 dbg("%s - error = %2x", __func__, status); 346 else 347 dbg("%s - read OK !", __func__); 348 return status; 349 } 350 351 static int iuu_led(struct usb_serial_port *port, unsigned int R, 352 unsigned int G, unsigned int B, u8 f) 353 { 354 int status; 355 u8 *buf; 356 buf = kmalloc(8, GFP_KERNEL); 357 if (!buf) 358 return -ENOMEM; 359 360 dbg("%s - enter", __func__); 361 362 buf[0] = IUU_SET_LED; 363 buf[1] = R & 0xFF; 364 buf[2] = (R >> 8) & 0xFF; 365 buf[3] = G & 0xFF; 366 buf[4] = (G >> 8) & 0xFF; 367 buf[5] = B & 0xFF; 368 buf[6] = (B >> 8) & 0xFF; 369 buf[7] = f; 370 status = bulk_immediate(port, buf, 8); 371 kfree(buf); 372 if (status != IUU_OPERATION_OK) 373 dbg("%s - led error status = %2x", __func__, status); 374 else 375 dbg("%s - led OK !", __func__); 376 return IUU_OPERATION_OK; 377 } 378 379 static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1, 380 u8 b2, u8 freq) 381 { 382 *buf++ = IUU_SET_LED; 383 *buf++ = r1; 384 *buf++ = r2; 385 *buf++ = g1; 386 *buf++ = g2; 387 *buf++ = b1; 388 *buf++ = b2; 389 *buf = freq; 390 } 391 392 static void iuu_led_activity_on(struct urb *urb) 393 { 394 struct usb_serial_port *port = urb->context; 395 int result; 396 char *buf_ptr = port->write_urb->transfer_buffer; 397 *buf_ptr++ = IUU_SET_LED; 398 if (xmas == 1) { 399 get_random_bytes(buf_ptr, 6); 400 *(buf_ptr+7) = 1; 401 } else { 402 iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255); 403 } 404 405 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 406 usb_sndbulkpipe(port->serial->dev, 407 port->bulk_out_endpointAddress), 408 port->write_urb->transfer_buffer, 8 , 409 iuu_rxcmd, port); 410 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 411 } 412 413 static void iuu_led_activity_off(struct urb *urb) 414 { 415 struct usb_serial_port *port = urb->context; 416 int result; 417 char *buf_ptr = port->write_urb->transfer_buffer; 418 if (xmas == 1) { 419 iuu_rxcmd(urb); 420 return; 421 } else { 422 *buf_ptr++ = IUU_SET_LED; 423 iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255); 424 } 425 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 426 usb_sndbulkpipe(port->serial->dev, 427 port->bulk_out_endpointAddress), 428 port->write_urb->transfer_buffer, 8 , 429 iuu_rxcmd, port); 430 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 431 } 432 433 434 435 static int iuu_clk(struct usb_serial_port *port, int dwFrq) 436 { 437 int status; 438 struct iuu_private *priv = usb_get_serial_port_data(port); 439 int Count = 0; 440 u8 FrqGenAdr = 0x69; 441 u8 DIV = 0; /* 8bit */ 442 u8 XDRV = 0; /* 8bit */ 443 u8 PUMP = 0; /* 3bit */ 444 u8 PBmsb = 0; /* 2bit */ 445 u8 PBlsb = 0; /* 8bit */ 446 u8 PO = 0; /* 1bit */ 447 u8 Q = 0; /* 7bit */ 448 /* 24bit = 3bytes */ 449 unsigned int P = 0; 450 unsigned int P2 = 0; 451 int frq = (int)dwFrq; 452 453 dbg("%s - enter", __func__); 454 455 if (frq == 0) { 456 priv->buf[Count++] = IUU_UART_WRITE_I2C; 457 priv->buf[Count++] = FrqGenAdr << 1; 458 priv->buf[Count++] = 0x09; 459 priv->buf[Count++] = 0x00; 460 461 status = bulk_immediate(port, (u8 *) priv->buf, Count); 462 if (status != 0) { 463 dbg("%s - write error ", __func__); 464 return status; 465 } 466 } else if (frq == 3579000) { 467 DIV = 100; 468 P = 1193; 469 Q = 40; 470 XDRV = 0; 471 } else if (frq == 3680000) { 472 DIV = 105; 473 P = 161; 474 Q = 5; 475 XDRV = 0; 476 } else if (frq == 6000000) { 477 DIV = 66; 478 P = 66; 479 Q = 2; 480 XDRV = 0x28; 481 } else { 482 unsigned int result = 0; 483 unsigned int tmp = 0; 484 unsigned int check; 485 unsigned int check2; 486 char found = 0x00; 487 unsigned int lQ = 2; 488 unsigned int lP = 2055; 489 unsigned int lDiv = 4; 490 491 for (lQ = 2; lQ <= 47 && !found; lQ++) 492 for (lP = 2055; lP >= 8 && !found; lP--) 493 for (lDiv = 4; lDiv <= 127 && !found; lDiv++) { 494 tmp = (12000000 / lDiv) * (lP / lQ); 495 if (abs((int)(tmp - frq)) < 496 abs((int)(frq - result))) { 497 check2 = (12000000 / lQ); 498 if (check2 < 250000) 499 continue; 500 check = (12000000 / lQ) * lP; 501 if (check > 400000000) 502 continue; 503 if (check < 100000000) 504 continue; 505 if (lDiv < 4 || lDiv > 127) 506 continue; 507 result = tmp; 508 P = lP; 509 DIV = lDiv; 510 Q = lQ; 511 if (result == frq) 512 found = 0x01; 513 } 514 } 515 } 516 P2 = ((P - PO) / 2) - 4; 517 DIV = DIV; 518 PUMP = 0x04; 519 PBmsb = (P2 >> 8 & 0x03); 520 PBlsb = P2 & 0xFF; 521 PO = (P >> 10) & 0x01; 522 Q = Q - 2; 523 524 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 525 priv->buf[Count++] = FrqGenAdr << 1; 526 priv->buf[Count++] = 0x09; 527 priv->buf[Count++] = 0x20; /* Adr = 0x09 */ 528 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 529 priv->buf[Count++] = FrqGenAdr << 1; 530 priv->buf[Count++] = 0x0C; 531 priv->buf[Count++] = DIV; /* Adr = 0x0C */ 532 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 533 priv->buf[Count++] = FrqGenAdr << 1; 534 priv->buf[Count++] = 0x12; 535 priv->buf[Count++] = XDRV; /* Adr = 0x12 */ 536 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 537 priv->buf[Count++] = FrqGenAdr << 1; 538 priv->buf[Count++] = 0x13; 539 priv->buf[Count++] = 0x6B; /* Adr = 0x13 */ 540 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 541 priv->buf[Count++] = FrqGenAdr << 1; 542 priv->buf[Count++] = 0x40; 543 priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) | 544 (PBmsb & 0x03); /* Adr = 0x40 */ 545 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 546 priv->buf[Count++] = FrqGenAdr << 1; 547 priv->buf[Count++] = 0x41; 548 priv->buf[Count++] = PBlsb; /* Adr = 0x41 */ 549 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 550 priv->buf[Count++] = FrqGenAdr << 1; 551 priv->buf[Count++] = 0x42; 552 priv->buf[Count++] = Q | (((PO & 0x01) << 7)); /* Adr = 0x42 */ 553 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 554 priv->buf[Count++] = FrqGenAdr << 1; 555 priv->buf[Count++] = 0x44; 556 priv->buf[Count++] = (char)0xFF; /* Adr = 0x44 */ 557 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 558 priv->buf[Count++] = FrqGenAdr << 1; 559 priv->buf[Count++] = 0x45; 560 priv->buf[Count++] = (char)0xFE; /* Adr = 0x45 */ 561 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 562 priv->buf[Count++] = FrqGenAdr << 1; 563 priv->buf[Count++] = 0x46; 564 priv->buf[Count++] = 0x7F; /* Adr = 0x46 */ 565 priv->buf[Count++] = IUU_UART_WRITE_I2C; /* 0x4C */ 566 priv->buf[Count++] = FrqGenAdr << 1; 567 priv->buf[Count++] = 0x47; 568 priv->buf[Count++] = (char)0x84; /* Adr = 0x47 */ 569 570 status = bulk_immediate(port, (u8 *) priv->buf, Count); 571 if (status != IUU_OPERATION_OK) 572 dbg("%s - write error ", __func__); 573 return status; 574 } 575 576 static int iuu_uart_flush(struct usb_serial_port *port) 577 { 578 int i; 579 int status; 580 u8 rxcmd = IUU_UART_RX; 581 struct iuu_private *priv = usb_get_serial_port_data(port); 582 583 dbg("%s - enter", __func__); 584 585 if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0) 586 return -EIO; 587 588 for (i = 0; i < 2; i++) { 589 status = bulk_immediate(port, &rxcmd, 1); 590 if (status != IUU_OPERATION_OK) { 591 dbg("%s - uart_flush_write error", __func__); 592 return status; 593 } 594 595 status = read_immediate(port, &priv->len, 1); 596 if (status != IUU_OPERATION_OK) { 597 dbg("%s - uart_flush_read error", __func__); 598 return status; 599 } 600 601 if (priv->len > 0) { 602 dbg("%s - uart_flush datalen is : %i ", __func__, 603 priv->len); 604 status = read_immediate(port, priv->buf, priv->len); 605 if (status != IUU_OPERATION_OK) { 606 dbg("%s - uart_flush_read error", __func__); 607 return status; 608 } 609 } 610 } 611 dbg("%s - uart_flush_read OK!", __func__); 612 iuu_led(port, 0, 0xF000, 0, 0xFF); 613 return status; 614 } 615 616 static void read_buf_callback(struct urb *urb) 617 { 618 struct usb_serial_port *port = urb->context; 619 unsigned char *data = urb->transfer_buffer; 620 struct tty_struct *tty; 621 dbg("%s - urb->status = %d", __func__, urb->status); 622 623 if (urb->status) { 624 dbg("%s - urb->status = %d", __func__, urb->status); 625 if (urb->status == -EPROTO) { 626 /* reschedule needed */ 627 } 628 return; 629 } 630 631 dbg("%s - %i chars to write", __func__, urb->actual_length); 632 tty = tty_port_tty_get(&port->port); 633 if (data == NULL) 634 dbg("%s - data is NULL !!!", __func__); 635 if (tty && urb->actual_length && data) { 636 tty_insert_flip_string(tty, data, urb->actual_length); 637 tty_flip_buffer_push(tty); 638 } 639 tty_kref_put(tty); 640 iuu_led_activity_on(urb); 641 } 642 643 static int iuu_bulk_write(struct usb_serial_port *port) 644 { 645 struct iuu_private *priv = usb_get_serial_port_data(port); 646 unsigned long flags; 647 int result; 648 int i; 649 char *buf_ptr = port->write_urb->transfer_buffer; 650 dbg("%s - enter", __func__); 651 652 *buf_ptr++ = IUU_UART_ESC; 653 *buf_ptr++ = IUU_UART_TX; 654 *buf_ptr++ = priv->writelen; 655 656 memcpy(buf_ptr, priv->writebuf, 657 priv->writelen); 658 if (debug == 1) { 659 for (i = 0; i < priv->writelen; i++) 660 sprintf(priv->dbgbuf + i*2 , 661 "%02X", priv->writebuf[i]); 662 priv->dbgbuf[priv->writelen+i*2] = 0; 663 dbg("%s - writing %i chars : %s", __func__, 664 priv->writelen, priv->dbgbuf); 665 } 666 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 667 usb_sndbulkpipe(port->serial->dev, 668 port->bulk_out_endpointAddress), 669 port->write_urb->transfer_buffer, priv->writelen + 3, 670 iuu_rxcmd, port); 671 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 672 spin_lock_irqsave(&priv->lock, flags); 673 priv->writelen = 0; 674 spin_unlock_irqrestore(&priv->lock, flags); 675 usb_serial_port_softint(port); 676 return result; 677 } 678 679 static int iuu_read_buf(struct usb_serial_port *port, int len) 680 { 681 int result; 682 dbg("%s - enter", __func__); 683 684 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 685 usb_rcvbulkpipe(port->serial->dev, 686 port->bulk_in_endpointAddress), 687 port->read_urb->transfer_buffer, len, 688 read_buf_callback, port); 689 result = usb_submit_urb(port->read_urb, GFP_ATOMIC); 690 return result; 691 } 692 693 static void iuu_uart_read_callback(struct urb *urb) 694 { 695 struct usb_serial_port *port = urb->context; 696 struct iuu_private *priv = usb_get_serial_port_data(port); 697 unsigned long flags; 698 int status; 699 int error = 0; 700 int len = 0; 701 unsigned char *data = urb->transfer_buffer; 702 priv->poll++; 703 704 dbg("%s - enter", __func__); 705 706 if (urb->status) { 707 dbg("%s - urb->status = %d", __func__, urb->status); 708 /* error stop all */ 709 return; 710 } 711 if (data == NULL) 712 dbg("%s - data is NULL !!!", __func__); 713 714 if (urb->actual_length == 1 && data != NULL) 715 len = (int) data[0]; 716 717 if (urb->actual_length > 1) { 718 dbg("%s - urb->actual_length = %i", __func__, 719 urb->actual_length); 720 error = 1; 721 return; 722 } 723 /* if len > 0 call readbuf */ 724 725 if (len > 0 && error == 0) { 726 dbg("%s - call read buf - len to read is %i ", 727 __func__, len); 728 status = iuu_read_buf(port, len); 729 return; 730 } 731 /* need to update status ? */ 732 if (priv->poll > 99) { 733 status = iuu_status(port); 734 priv->poll = 0; 735 return; 736 } 737 738 /* reset waiting ? */ 739 740 if (priv->reset == 1) { 741 status = iuu_reset(port, 0xC); 742 return; 743 } 744 /* Writebuf is waiting */ 745 spin_lock_irqsave(&priv->lock, flags); 746 if (priv->writelen > 0) { 747 spin_unlock_irqrestore(&priv->lock, flags); 748 status = iuu_bulk_write(port); 749 return; 750 } 751 spin_unlock_irqrestore(&priv->lock, flags); 752 /* if nothing to write call again rxcmd */ 753 dbg("%s - rxcmd recall", __func__); 754 iuu_led_activity_off(urb); 755 } 756 757 static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port, 758 const u8 *buf, int count) 759 { 760 struct iuu_private *priv = usb_get_serial_port_data(port); 761 unsigned long flags; 762 dbg("%s - enter", __func__); 763 764 if (count > 256) 765 return -ENOMEM; 766 767 spin_lock_irqsave(&priv->lock, flags); 768 if (priv->writelen > 0) { 769 /* buffer already filled but not commited */ 770 spin_unlock_irqrestore(&priv->lock, flags); 771 return 0; 772 } 773 /* fill the buffer */ 774 memcpy(priv->writebuf, buf, count); 775 priv->writelen = count; 776 spin_unlock_irqrestore(&priv->lock, flags); 777 778 return count; 779 } 780 781 static void read_rxcmd_callback(struct urb *urb) 782 { 783 struct usb_serial_port *port = urb->context; 784 int result; 785 dbg("%s - enter", __func__); 786 787 dbg("%s - urb->status = %d", __func__, urb->status); 788 789 if (urb->status) { 790 dbg("%s - urb->status = %d", __func__, urb->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_TWO_STOP_BITS) | (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 int set_control_lines(struct usb_device *dev, u8 value) 946 { 947 return 0; 948 } 949 950 static void iuu_close(struct tty_struct *tty, 951 struct usb_serial_port *port, struct file *filp) 952 { 953 /* iuu_led (port,255,0,0,0); */ 954 struct usb_serial *serial; 955 struct iuu_private *priv = usb_get_serial_port_data(port); 956 unsigned long flags; 957 unsigned int c_cflag; 958 959 serial = port->serial; 960 if (!serial) 961 return; 962 963 dbg("%s - port %d", __func__, port->number); 964 965 iuu_uart_off(port); 966 if (serial->dev) { 967 if (tty) { 968 c_cflag = tty->termios->c_cflag; 969 if (c_cflag & HUPCL) { 970 /* drop DTR and RTS */ 971 priv = usb_get_serial_port_data(port); 972 spin_lock_irqsave(&priv->lock, flags); 973 priv->line_control = 0; 974 spin_unlock_irqrestore(&priv->lock, flags); 975 set_control_lines(port->serial->dev, 0); 976 } 977 } 978 /* free writebuf */ 979 /* shutdown our urbs */ 980 dbg("%s - shutting down urbs", __func__); 981 usb_kill_urb(port->write_urb); 982 usb_kill_urb(port->read_urb); 983 usb_kill_urb(port->interrupt_in_urb); 984 msleep(1000); 985 /* wait one second to free all buffers */ 986 iuu_led(port, 0, 0, 0xF000, 0xFF); 987 msleep(1000); 988 usb_reset_device(port->serial->dev); 989 } 990 } 991 992 static int iuu_open(struct tty_struct *tty, 993 struct usb_serial_port *port, struct file *filp) 994 { 995 struct usb_serial *serial = port->serial; 996 u8 *buf; 997 int result; 998 u32 actual; 999 unsigned long flags; 1000 struct iuu_private *priv = usb_get_serial_port_data(port); 1001 1002 dbg("%s - port %d", __func__, port->number); 1003 usb_clear_halt(serial->dev, port->write_urb->pipe); 1004 usb_clear_halt(serial->dev, port->read_urb->pipe); 1005 1006 buf = kmalloc(10, GFP_KERNEL); 1007 if (buf == NULL) 1008 return -ENOMEM; 1009 1010 /* fixup the endpoint buffer size */ 1011 kfree(port->bulk_out_buffer); 1012 port->bulk_out_buffer = kmalloc(512, GFP_KERNEL); 1013 port->bulk_out_size = 512; 1014 kfree(port->bulk_in_buffer); 1015 port->bulk_in_buffer = kmalloc(512, GFP_KERNEL); 1016 port->bulk_in_size = 512; 1017 1018 if (!port->bulk_out_buffer || !port->bulk_in_buffer) { 1019 kfree(port->bulk_out_buffer); 1020 kfree(port->bulk_in_buffer); 1021 kfree(buf); 1022 return -ENOMEM; 1023 } 1024 1025 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1026 usb_sndbulkpipe(port->serial->dev, 1027 port->bulk_out_endpointAddress), 1028 port->bulk_out_buffer, 512, 1029 NULL, NULL); 1030 1031 1032 usb_fill_bulk_urb(port->read_urb, port->serial->dev, 1033 usb_rcvbulkpipe(port->serial->dev, 1034 port->bulk_in_endpointAddress), 1035 port->bulk_in_buffer, 512, 1036 NULL, NULL); 1037 1038 /* set the termios structure */ 1039 spin_lock_irqsave(&priv->lock, flags); 1040 if (tty && !priv->termios_initialized) { 1041 *(tty->termios) = tty_std_termios; 1042 tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600 1043 | TIOCM_CTS | CSTOPB | PARENB; 1044 tty->termios->c_ispeed = 9600; 1045 tty->termios->c_ospeed = 9600; 1046 tty->termios->c_lflag = 0; 1047 tty->termios->c_oflag = 0; 1048 tty->termios->c_iflag = 0; 1049 priv->termios_initialized = 1; 1050 tty->low_latency = 1; 1051 priv->poll = 0; 1052 } 1053 spin_unlock_irqrestore(&priv->lock, flags); 1054 1055 /* initialize writebuf */ 1056 #define FISH(a, b, c, d) do { \ 1057 result = usb_control_msg(port->serial->dev, \ 1058 usb_rcvctrlpipe(port->serial->dev, 0), \ 1059 b, a, c, d, buf, 1, 1000); \ 1060 dbg("0x%x:0x%x:0x%x:0x%x %d - %x", a, b, c, d, result, \ 1061 buf[0]); } while (0); 1062 1063 #define SOUP(a, b, c, d) do { \ 1064 result = usb_control_msg(port->serial->dev, \ 1065 usb_sndctrlpipe(port->serial->dev, 0), \ 1066 b, a, c, d, NULL, 0, 1000); \ 1067 dbg("0x%x:0x%x:0x%x:0x%x %d", a, b, c, d, result); } while (0) 1068 1069 /* This is not UART related but IUU USB driver related or something */ 1070 /* like that. Basically no IUU will accept any commands from the USB */ 1071 /* host unless it has received the following message */ 1072 /* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */ 1073 1074 SOUP(0x03, 0x02, 0x02, 0x0); 1075 kfree(buf); 1076 iuu_led(port, 0xF000, 0xF000, 0, 0xFF); 1077 iuu_uart_on(port); 1078 if (boost < 100) 1079 boost = 100; 1080 switch (clockmode) { 1081 case 2: /* 3.680 Mhz */ 1082 iuu_clk(port, IUU_CLK_3680000 * boost / 100); 1083 result = 1084 iuu_uart_baud(port, 9600 * boost / 100, &actual, 1085 IUU_PARITY_EVEN); 1086 break; 1087 case 3: /* 6.00 Mhz */ 1088 iuu_clk(port, IUU_CLK_6000000 * boost / 100); 1089 result = 1090 iuu_uart_baud(port, 16457 * boost / 100, &actual, 1091 IUU_PARITY_EVEN); 1092 break; 1093 default: /* 3.579 Mhz */ 1094 iuu_clk(port, IUU_CLK_3579000 * boost / 100); 1095 result = 1096 iuu_uart_baud(port, 9600 * boost / 100, &actual, 1097 IUU_PARITY_EVEN); 1098 } 1099 1100 /* set the cardin cardout signals */ 1101 switch (cdmode) { 1102 case 0: 1103 iuu_cardin = 0; 1104 iuu_cardout = 0; 1105 break; 1106 case 1: 1107 iuu_cardin = TIOCM_CD; 1108 iuu_cardout = 0; 1109 break; 1110 case 2: 1111 iuu_cardin = 0; 1112 iuu_cardout = TIOCM_CD; 1113 break; 1114 case 3: 1115 iuu_cardin = TIOCM_DSR; 1116 iuu_cardout = 0; 1117 break; 1118 case 4: 1119 iuu_cardin = 0; 1120 iuu_cardout = TIOCM_DSR; 1121 break; 1122 case 5: 1123 iuu_cardin = TIOCM_CTS; 1124 iuu_cardout = 0; 1125 break; 1126 case 6: 1127 iuu_cardin = 0; 1128 iuu_cardout = TIOCM_CTS; 1129 break; 1130 case 7: 1131 iuu_cardin = TIOCM_RNG; 1132 iuu_cardout = 0; 1133 break; 1134 case 8: 1135 iuu_cardin = 0; 1136 iuu_cardout = TIOCM_RNG; 1137 } 1138 1139 iuu_uart_flush(port); 1140 1141 dbg("%s - initialization done", __func__); 1142 1143 memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1); 1144 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1145 usb_sndbulkpipe(port->serial->dev, 1146 port->bulk_out_endpointAddress), 1147 port->write_urb->transfer_buffer, 1, 1148 read_rxcmd_callback, port); 1149 result = usb_submit_urb(port->write_urb, GFP_KERNEL); 1150 1151 if (result) { 1152 dev_err(&port->dev, "%s - failed submitting read urb," 1153 " error %d\n", __func__, result); 1154 iuu_close(tty, port, NULL); 1155 return -EPROTO; 1156 } else { 1157 dbg("%s - rxcmd OK", __func__); 1158 } 1159 return result; 1160 } 1161 1162 static struct usb_serial_driver iuu_device = { 1163 .driver = { 1164 .owner = THIS_MODULE, 1165 .name = "iuu_phoenix", 1166 }, 1167 .id_table = id_table, 1168 .num_ports = 1, 1169 .open = iuu_open, 1170 .close = iuu_close, 1171 .write = iuu_uart_write, 1172 .read_bulk_callback = iuu_uart_read_callback, 1173 .tiocmget = iuu_tiocmget, 1174 .tiocmset = iuu_tiocmset, 1175 .attach = iuu_startup, 1176 .shutdown = iuu_shutdown, 1177 }; 1178 1179 static int __init iuu_init(void) 1180 { 1181 int retval; 1182 retval = usb_serial_register(&iuu_device); 1183 if (retval) 1184 goto failed_usb_serial_register; 1185 retval = usb_register(&iuu_driver); 1186 if (retval) 1187 goto failed_usb_register; 1188 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" 1189 DRIVER_DESC "\n"); 1190 return 0; 1191 failed_usb_register: 1192 usb_serial_deregister(&iuu_device); 1193 failed_usb_serial_register: 1194 return retval; 1195 } 1196 1197 static void __exit iuu_exit(void) 1198 { 1199 usb_deregister(&iuu_driver); 1200 usb_serial_deregister(&iuu_device); 1201 } 1202 1203 module_init(iuu_init); 1204 module_exit(iuu_exit); 1205 1206 MODULE_AUTHOR("Alain Degreffe eczema@ecze.com"); 1207 1208 MODULE_DESCRIPTION(DRIVER_DESC); 1209 MODULE_LICENSE("GPL"); 1210 1211 MODULE_VERSION(DRIVER_VERSION); 1212 module_param(debug, bool, S_IRUGO | S_IWUSR); 1213 MODULE_PARM_DESC(debug, "Debug enabled or not"); 1214 1215 module_param(xmas, bool, S_IRUGO | S_IWUSR); 1216 MODULE_PARM_DESC(xmas, "xmas color enabled or not"); 1217 1218 module_param(boost, int, S_IRUGO | S_IWUSR); 1219 MODULE_PARM_DESC(boost, "overclock boost percent 100 to 500"); 1220 1221 module_param(clockmode, int, S_IRUGO | S_IWUSR); 1222 MODULE_PARM_DESC(clockmode, "1=3Mhz579,2=3Mhz680,3=6Mhz"); 1223 1224 module_param(cdmode, int, S_IRUGO | S_IWUSR); 1225 MODULE_PARM_DESC(cdmode, "Card detect mode 0=none, 1=CD, 2=!CD, 3=DSR, " 1226 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING"); 1227