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