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