1/* 2 * This program is free software; you can redistribute it and/or 3 * modify it under the terms of the GNU General Public License 4 * as published by the Free Software Foundation; either version 5 * 2 of the License, or (at your option) any later version. 6 * 7 * Original driver code supplied by Multi-Tech 8 * 9 * Changes 10 * 1/9/98 alan@lxorguk.ukuu.org.uk 11 * Merge to 2.0.x kernel tree 12 * Obtain and use official major/minors 13 * Loader switched to a misc device 14 * (fixed range check bug as a side effect) 15 * Printk clean up 16 * 9/12/98 alan@lxorguk.ukuu.org.uk 17 * Rough port to 2.1.x 18 * 19 * 10/6/99 sameer Merged the ISA and PCI drivers to 20 * a new unified driver. 21 * 22 * 3/9/99 sameer Added support for ISI4616 cards. 23 * 24 * 16/9/99 sameer We do not force RTS low anymore. 25 * This is to prevent the firmware 26 * from getting confused. 27 * 28 * 26/10/99 sameer Cosmetic changes:The driver now 29 * dumps the Port Count information 30 * along with I/O address and IRQ. 31 * 32 * 13/12/99 sameer Fixed the problem with IRQ sharing. 33 * 34 * 10/5/00 sameer Fixed isicom_shutdown_board() 35 * to not lower DTR on all the ports 36 * when the last port on the card is 37 * closed. 38 * 39 * 10/5/00 sameer Signal mask setup command added 40 * to isicom_setup_port and 41 * isicom_shutdown_port. 42 * 43 * 24/5/00 sameer The driver is now SMP aware. 44 * 45 * 46 * 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem 47 * 48 * 49 * 03/01/01 anil .s Added support for resetting the 50 * internal modems on ISI cards. 51 * 52 * 08/02/01 anil .s Upgraded the driver for kernel 53 * 2.4.x 54 * 55 * 11/04/01 Kevin Fixed firmware load problem with 56 * ISIHP-4X card 57 * 58 * 30/04/01 anil .s Fixed the remote login through 59 * ISI port problem. Now the link 60 * does not go down before password 61 * prompt. 62 * 63 * 03/05/01 anil .s Fixed the problem with IRQ sharing 64 * among ISI-PCI cards. 65 * 66 * 03/05/01 anil .s Added support to display the version 67 * info during insmod as well as module 68 * listing by lsmod. 69 * 70 * 10/05/01 anil .s Done the modifications to the source 71 * file and Install script so that the 72 * same installation can be used for 73 * 2.2.x and 2.4.x kernel. 74 * 75 * 06/06/01 anil .s Now we drop both dtr and rts during 76 * shutdown_port as well as raise them 77 * during isicom_config_port. 78 * 79 * 09/06/01 acme@conectiva.com.br use capable, not suser, do 80 * restore_flags on failure in 81 * isicom_send_break, verify put_user 82 * result 83 * 84 * 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps 85 * Baud index extended to 21 86 * 87 * 20/03/03 ranjeeth Made to work for Linux Advanced server. 88 * Taken care of license warning. 89 * 90 * 10/12/03 Ravindra Made to work for Fedora Core 1 of 91 * Red Hat Distribution 92 * 93 * 06/01/05 Alan Cox Merged the ISI and base kernel strands 94 * into a single 2.6 driver 95 * 96 * *********************************************************** 97 * 98 * To use this driver you also need the support package. You 99 * can find this in RPM format on 100 * ftp://ftp.linux.org.uk/pub/linux/alan 101 * 102 * You can find the original tools for this direct from Multitech 103 * ftp://ftp.multitech.com/ISI-Cards/ 104 * 105 * Having installed the cards the module options (/etc/modprobe.conf) 106 * 107 * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4 108 * 109 * Omit those entries for boards you don't have installed. 110 * 111 * TODO 112 * Merge testing 113 * 64-bit verification 114 */ 115 116#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 117 118#include <linux/module.h> 119#include <linux/firmware.h> 120#include <linux/kernel.h> 121#include <linux/tty.h> 122#include <linux/tty_flip.h> 123#include <linux/termios.h> 124#include <linux/fs.h> 125#include <linux/sched.h> 126#include <linux/serial.h> 127#include <linux/mm.h> 128#include <linux/interrupt.h> 129#include <linux/timer.h> 130#include <linux/delay.h> 131#include <linux/ioport.h> 132#include <linux/slab.h> 133 134#include <linux/uaccess.h> 135#include <linux/io.h> 136#include <asm/system.h> 137 138#include <linux/pci.h> 139 140#include <linux/isicom.h> 141 142#define InterruptTheCard(base) outw(0, (base) + 0xc) 143#define ClearInterrupt(base) inw((base) + 0x0a) 144 145#ifdef DEBUG 146#define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c)) 147#else 148#define isicom_paranoia_check(a, b, c) 0 149#endif 150 151static int isicom_probe(struct pci_dev *, const struct pci_device_id *); 152static void __devexit isicom_remove(struct pci_dev *); 153 154static struct pci_device_id isicom_pci_tbl[] = { 155 { PCI_DEVICE(VENDOR_ID, 0x2028) }, 156 { PCI_DEVICE(VENDOR_ID, 0x2051) }, 157 { PCI_DEVICE(VENDOR_ID, 0x2052) }, 158 { PCI_DEVICE(VENDOR_ID, 0x2053) }, 159 { PCI_DEVICE(VENDOR_ID, 0x2054) }, 160 { PCI_DEVICE(VENDOR_ID, 0x2055) }, 161 { PCI_DEVICE(VENDOR_ID, 0x2056) }, 162 { PCI_DEVICE(VENDOR_ID, 0x2057) }, 163 { PCI_DEVICE(VENDOR_ID, 0x2058) }, 164 { 0 } 165}; 166MODULE_DEVICE_TABLE(pci, isicom_pci_tbl); 167 168static struct pci_driver isicom_driver = { 169 .name = "isicom", 170 .id_table = isicom_pci_tbl, 171 .probe = isicom_probe, 172 .remove = __devexit_p(isicom_remove) 173}; 174 175static int prev_card = 3; /* start servicing isi_card[0] */ 176static struct tty_driver *isicom_normal; 177 178static void isicom_tx(unsigned long _data); 179static void isicom_start(struct tty_struct *tty); 180 181static DEFINE_TIMER(tx, isicom_tx, 0, 0); 182 183/* baud index mappings from linux defns to isi */ 184 185static signed char linuxb_to_isib[] = { 186 -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19, 20, 21 187}; 188 189struct isi_board { 190 unsigned long base; 191 int irq; 192 unsigned char port_count; 193 unsigned short status; 194 unsigned short port_status; /* each bit for each port */ 195 unsigned short shift_count; 196 struct isi_port *ports; 197 signed char count; 198 spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */ 199 unsigned long flags; 200 unsigned int index; 201}; 202 203struct isi_port { 204 unsigned short magic; 205 struct tty_port port; 206 u16 channel; 207 u16 status; 208 struct isi_board *card; 209 unsigned char *xmit_buf; 210 int xmit_head; 211 int xmit_tail; 212 int xmit_cnt; 213}; 214 215static struct isi_board isi_card[BOARD_COUNT]; 216static struct isi_port isi_ports[PORT_COUNT]; 217 218/* 219 * Locking functions for card level locking. We need to own both 220 * the kernel lock for the card and have the card in a position that 221 * it wants to talk. 222 */ 223 224static inline int WaitTillCardIsFree(unsigned long base) 225{ 226 unsigned int count = 0; 227 unsigned int a = in_atomic(); /* do we run under spinlock? */ 228 229 while (!(inw(base + 0xe) & 0x1) && count++ < 100) 230 if (a) 231 mdelay(1); 232 else 233 msleep(1); 234 235 return !(inw(base + 0xe) & 0x1); 236} 237 238static int lock_card(struct isi_board *card) 239{ 240 unsigned long base = card->base; 241 unsigned int retries, a; 242 243 for (retries = 0; retries < 10; retries++) { 244 spin_lock_irqsave(&card->card_lock, card->flags); 245 for (a = 0; a < 10; a++) { 246 if (inw(base + 0xe) & 0x1) 247 return 1; 248 udelay(10); 249 } 250 spin_unlock_irqrestore(&card->card_lock, card->flags); 251 msleep(10); 252 } 253 pr_warning("Failed to lock Card (0x%lx)\n", card->base); 254 255 return 0; /* Failed to acquire the card! */ 256} 257 258static void unlock_card(struct isi_board *card) 259{ 260 spin_unlock_irqrestore(&card->card_lock, card->flags); 261} 262 263/* 264 * ISI Card specific ops ... 265 */ 266 267/* card->lock HAS to be held */ 268static void raise_dtr(struct isi_port *port) 269{ 270 struct isi_board *card = port->card; 271 unsigned long base = card->base; 272 u16 channel = port->channel; 273 274 if (WaitTillCardIsFree(base)) 275 return; 276 277 outw(0x8000 | (channel << card->shift_count) | 0x02, base); 278 outw(0x0504, base); 279 InterruptTheCard(base); 280 port->status |= ISI_DTR; 281} 282 283/* card->lock HAS to be held */ 284static inline void drop_dtr(struct isi_port *port) 285{ 286 struct isi_board *card = port->card; 287 unsigned long base = card->base; 288 u16 channel = port->channel; 289 290 if (WaitTillCardIsFree(base)) 291 return; 292 293 outw(0x8000 | (channel << card->shift_count) | 0x02, base); 294 outw(0x0404, base); 295 InterruptTheCard(base); 296 port->status &= ~ISI_DTR; 297} 298 299/* card->lock HAS to be held */ 300static inline void raise_rts(struct isi_port *port) 301{ 302 struct isi_board *card = port->card; 303 unsigned long base = card->base; 304 u16 channel = port->channel; 305 306 if (WaitTillCardIsFree(base)) 307 return; 308 309 outw(0x8000 | (channel << card->shift_count) | 0x02, base); 310 outw(0x0a04, base); 311 InterruptTheCard(base); 312 port->status |= ISI_RTS; 313} 314 315/* card->lock HAS to be held */ 316static inline void drop_rts(struct isi_port *port) 317{ 318 struct isi_board *card = port->card; 319 unsigned long base = card->base; 320 u16 channel = port->channel; 321 322 if (WaitTillCardIsFree(base)) 323 return; 324 325 outw(0x8000 | (channel << card->shift_count) | 0x02, base); 326 outw(0x0804, base); 327 InterruptTheCard(base); 328 port->status &= ~ISI_RTS; 329} 330 331/* card->lock MUST NOT be held */ 332 333static void isicom_dtr_rts(struct tty_port *port, int on) 334{ 335 struct isi_port *ip = container_of(port, struct isi_port, port); 336 struct isi_board *card = ip->card; 337 unsigned long base = card->base; 338 u16 channel = ip->channel; 339 340 if (!lock_card(card)) 341 return; 342 343 if (on) { 344 outw(0x8000 | (channel << card->shift_count) | 0x02, base); 345 outw(0x0f04, base); 346 InterruptTheCard(base); 347 ip->status |= (ISI_DTR | ISI_RTS); 348 } else { 349 outw(0x8000 | (channel << card->shift_count) | 0x02, base); 350 outw(0x0C04, base); 351 InterruptTheCard(base); 352 ip->status &= ~(ISI_DTR | ISI_RTS); 353 } 354 unlock_card(card); 355} 356 357/* card->lock HAS to be held */ 358static void drop_dtr_rts(struct isi_port *port) 359{ 360 struct isi_board *card = port->card; 361 unsigned long base = card->base; 362 u16 channel = port->channel; 363 364 if (WaitTillCardIsFree(base)) 365 return; 366 367 outw(0x8000 | (channel << card->shift_count) | 0x02, base); 368 outw(0x0c04, base); 369 InterruptTheCard(base); 370 port->status &= ~(ISI_RTS | ISI_DTR); 371} 372 373/* 374 * ISICOM Driver specific routines ... 375 * 376 */ 377 378static inline int __isicom_paranoia_check(struct isi_port const *port, 379 char *name, const char *routine) 380{ 381 if (!port) { 382 pr_warning("Warning: bad isicom magic for dev %s in %s.\n", 383 name, routine); 384 return 1; 385 } 386 if (port->magic != ISICOM_MAGIC) { 387 pr_warning("Warning: NULL isicom port for dev %s in %s.\n", 388 name, routine); 389 return 1; 390 } 391 392 return 0; 393} 394 395/* 396 * Transmitter. 397 * 398 * We shovel data into the card buffers on a regular basis. The card 399 * will do the rest of the work for us. 400 */ 401 402static void isicom_tx(unsigned long _data) 403{ 404 unsigned long flags, base; 405 unsigned int retries; 406 short count = (BOARD_COUNT-1), card; 407 short txcount, wrd, residue, word_count, cnt; 408 struct isi_port *port; 409 struct tty_struct *tty; 410 411 /* find next active board */ 412 card = (prev_card + 1) & 0x0003; 413 while (count-- > 0) { 414 if (isi_card[card].status & BOARD_ACTIVE) 415 break; 416 card = (card + 1) & 0x0003; 417 } 418 if (!(isi_card[card].status & BOARD_ACTIVE)) 419 goto sched_again; 420 421 prev_card = card; 422 423 count = isi_card[card].port_count; 424 port = isi_card[card].ports; 425 base = isi_card[card].base; 426 427 spin_lock_irqsave(&isi_card[card].card_lock, flags); 428 for (retries = 0; retries < 100; retries++) { 429 if (inw(base + 0xe) & 0x1) 430 break; 431 udelay(2); 432 } 433 if (retries >= 100) 434 goto unlock; 435 436 tty = tty_port_tty_get(&port->port); 437 if (tty == NULL) 438 goto put_unlock; 439 440 for (; count > 0; count--, port++) { 441 /* port not active or tx disabled to force flow control */ 442 if (!(port->port.flags & ASYNC_INITIALIZED) || 443 !(port->status & ISI_TXOK)) 444 continue; 445 446 txcount = min_t(short, TX_SIZE, port->xmit_cnt); 447 if (txcount <= 0 || tty->stopped || tty->hw_stopped) 448 continue; 449 450 if (!(inw(base + 0x02) & (1 << port->channel))) 451 continue; 452 453 pr_debug("txing %d bytes, port%d.\n", 454 txcount, port->channel + 1); 455 outw((port->channel << isi_card[card].shift_count) | txcount, 456 base); 457 residue = NO; 458 wrd = 0; 459 while (1) { 460 cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE 461 - port->xmit_tail)); 462 if (residue == YES) { 463 residue = NO; 464 if (cnt > 0) { 465 wrd |= (port->port.xmit_buf[port->xmit_tail] 466 << 8); 467 port->xmit_tail = (port->xmit_tail + 1) 468 & (SERIAL_XMIT_SIZE - 1); 469 port->xmit_cnt--; 470 txcount--; 471 cnt--; 472 outw(wrd, base); 473 } else { 474 outw(wrd, base); 475 break; 476 } 477 } 478 if (cnt <= 0) 479 break; 480 word_count = cnt >> 1; 481 outsw(base, port->port.xmit_buf+port->xmit_tail, word_count); 482 port->xmit_tail = (port->xmit_tail 483 + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1); 484 txcount -= (word_count << 1); 485 port->xmit_cnt -= (word_count << 1); 486 if (cnt & 0x0001) { 487 residue = YES; 488 wrd = port->port.xmit_buf[port->xmit_tail]; 489 port->xmit_tail = (port->xmit_tail + 1) 490 & (SERIAL_XMIT_SIZE - 1); 491 port->xmit_cnt--; 492 txcount--; 493 } 494 } 495 496 InterruptTheCard(base); 497 if (port->xmit_cnt <= 0) 498 port->status &= ~ISI_TXOK; 499 if (port->xmit_cnt <= WAKEUP_CHARS) 500 tty_wakeup(tty); 501 } 502 503put_unlock: 504 tty_kref_put(tty); 505unlock: 506 spin_unlock_irqrestore(&isi_card[card].card_lock, flags); 507 /* schedule another tx for hopefully in about 10ms */ 508sched_again: 509 mod_timer(&tx, jiffies + msecs_to_jiffies(10)); 510} 511 512/* 513 * Main interrupt handler routine 514 */ 515 516static irqreturn_t isicom_interrupt(int irq, void *dev_id) 517{ 518 struct isi_board *card = dev_id; 519 struct isi_port *port; 520 struct tty_struct *tty; 521 unsigned long base; 522 u16 header, word_count, count, channel; 523 short byte_count; 524 unsigned char *rp; 525 526 if (!card || !(card->status & FIRMWARE_LOADED)) 527 return IRQ_NONE; 528 529 base = card->base; 530 531 /* did the card interrupt us? */ 532 if (!(inw(base + 0x0e) & 0x02)) 533 return IRQ_NONE; 534 535 spin_lock(&card->card_lock); 536 537 /* 538 * disable any interrupts from the PCI card and lower the 539 * interrupt line 540 */ 541 outw(0x8000, base+0x04); 542 ClearInterrupt(base); 543 544 inw(base); /* get the dummy word out */ 545 header = inw(base); 546 channel = (header & 0x7800) >> card->shift_count; 547 byte_count = header & 0xff; 548 549 if (channel + 1 > card->port_count) { 550 pr_warning("%s(0x%lx): %d(channel) > port_count.\n", 551 __func__, base, channel+1); 552 outw(0x0000, base+0x04); /* enable interrupts */ 553 spin_unlock(&card->card_lock); 554 return IRQ_HANDLED; 555 } 556 port = card->ports + channel; 557 if (!(port->port.flags & ASYNC_INITIALIZED)) { 558 outw(0x0000, base+0x04); /* enable interrupts */ 559 spin_unlock(&card->card_lock); 560 return IRQ_HANDLED; 561 } 562 563 tty = tty_port_tty_get(&port->port); 564 if (tty == NULL) { 565 word_count = byte_count >> 1; 566 while (byte_count > 1) { 567 inw(base); 568 byte_count -= 2; 569 } 570 if (byte_count & 0x01) 571 inw(base); 572 outw(0x0000, base+0x04); /* enable interrupts */ 573 spin_unlock(&card->card_lock); 574 return IRQ_HANDLED; 575 } 576 577 if (header & 0x8000) { /* Status Packet */ 578 header = inw(base); 579 switch (header & 0xff) { 580 case 0: /* Change in EIA signals */ 581 if (port->port.flags & ASYNC_CHECK_CD) { 582 if (port->status & ISI_DCD) { 583 if (!(header & ISI_DCD)) { 584 /* Carrier has been lost */ 585 pr_debug("%s: DCD->low.\n", 586 __func__); 587 port->status &= ~ISI_DCD; 588 tty_hangup(tty); 589 } 590 } else if (header & ISI_DCD) { 591 /* Carrier has been detected */ 592 pr_debug("%s: DCD->high.\n", 593 __func__); 594 port->status |= ISI_DCD; 595 wake_up_interruptible(&port->port.open_wait); 596 } 597 } else { 598 if (header & ISI_DCD) 599 port->status |= ISI_DCD; 600 else 601 port->status &= ~ISI_DCD; 602 } 603 604 if (port->port.flags & ASYNC_CTS_FLOW) { 605 if (tty->hw_stopped) { 606 if (header & ISI_CTS) { 607 port->port.tty->hw_stopped = 0; 608 /* start tx ing */ 609 port->status |= (ISI_TXOK 610 | ISI_CTS); 611 tty_wakeup(tty); 612 } 613 } else if (!(header & ISI_CTS)) { 614 tty->hw_stopped = 1; 615 /* stop tx ing */ 616 port->status &= ~(ISI_TXOK | ISI_CTS); 617 } 618 } else { 619 if (header & ISI_CTS) 620 port->status |= ISI_CTS; 621 else 622 port->status &= ~ISI_CTS; 623 } 624 625 if (header & ISI_DSR) 626 port->status |= ISI_DSR; 627 else 628 port->status &= ~ISI_DSR; 629 630 if (header & ISI_RI) 631 port->status |= ISI_RI; 632 else 633 port->status &= ~ISI_RI; 634 635 break; 636 637 case 1: /* Received Break !!! */ 638 tty_insert_flip_char(tty, 0, TTY_BREAK); 639 if (port->port.flags & ASYNC_SAK) 640 do_SAK(tty); 641 tty_flip_buffer_push(tty); 642 break; 643 644 case 2: /* Statistics */ 645 pr_debug("%s: stats!!!\n", __func__); 646 break; 647 648 default: 649 pr_debug("%s: Unknown code in status packet.\n", 650 __func__); 651 break; 652 } 653 } else { /* Data Packet */ 654 655 count = tty_prepare_flip_string(tty, &rp, byte_count & ~1); 656 pr_debug("%s: Can rx %d of %d bytes.\n", 657 __func__, count, byte_count); 658 word_count = count >> 1; 659 insw(base, rp, word_count); 660 byte_count -= (word_count << 1); 661 if (count & 0x0001) { 662 tty_insert_flip_char(tty, inw(base) & 0xff, 663 TTY_NORMAL); 664 byte_count -= 2; 665 } 666 if (byte_count > 0) { 667 pr_debug("%s(0x%lx:%d): Flip buffer overflow! dropping bytes...\n", 668 __func__, base, channel + 1); 669 /* drain out unread xtra data */ 670 while (byte_count > 0) { 671 inw(base); 672 byte_count -= 2; 673 } 674 } 675 tty_flip_buffer_push(tty); 676 } 677 outw(0x0000, base+0x04); /* enable interrupts */ 678 spin_unlock(&card->card_lock); 679 tty_kref_put(tty); 680 681 return IRQ_HANDLED; 682} 683 684static void isicom_config_port(struct tty_struct *tty) 685{ 686 struct isi_port *port = tty->driver_data; 687 struct isi_board *card = port->card; 688 unsigned long baud; 689 unsigned long base = card->base; 690 u16 channel_setup, channel = port->channel, 691 shift_count = card->shift_count; 692 unsigned char flow_ctrl; 693 694 baud = C_BAUD(tty); 695 if (baud & CBAUDEX) { 696 baud &= ~CBAUDEX; 697 698 /* if CBAUDEX bit is on and the baud is set to either 50 or 75 699 * then the card is programmed for 57.6Kbps or 115Kbps 700 * respectively. 701 */ 702 703 /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */ 704 if (baud < 1 || baud > 4) 705 tty->termios->c_cflag &= ~CBAUDEX; 706 else 707 baud += 15; 708 } 709 if (baud == 15) { 710 711 /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set 712 * by the set_serial_info ioctl ... this is done by 713 * the 'setserial' utility. 714 */ 715 716 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) 717 baud++; /* 57.6 Kbps */ 718 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) 719 baud += 2; /* 115 Kbps */ 720 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) 721 baud += 3; /* 230 kbps*/ 722 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) 723 baud += 4; /* 460 kbps*/ 724 } 725 if (linuxb_to_isib[baud] == -1) { 726 /* hang up */ 727 drop_dtr(port); 728 return; 729 } else 730 raise_dtr(port); 731 732 if (WaitTillCardIsFree(base) == 0) { 733 outw(0x8000 | (channel << shift_count) | 0x03, base); 734 outw(linuxb_to_isib[baud] << 8 | 0x03, base); 735 channel_setup = 0; 736 switch (C_CSIZE(tty)) { 737 case CS5: 738 channel_setup |= ISICOM_CS5; 739 break; 740 case CS6: 741 channel_setup |= ISICOM_CS6; 742 break; 743 case CS7: 744 channel_setup |= ISICOM_CS7; 745 break; 746 case CS8: 747 channel_setup |= ISICOM_CS8; 748 break; 749 } 750 751 if (C_CSTOPB(tty)) 752 channel_setup |= ISICOM_2SB; 753 if (C_PARENB(tty)) { 754 channel_setup |= ISICOM_EVPAR; 755 if (C_PARODD(tty)) 756 channel_setup |= ISICOM_ODPAR; 757 } 758 outw(channel_setup, base); 759 InterruptTheCard(base); 760 } 761 if (C_CLOCAL(tty)) 762 port->port.flags &= ~ASYNC_CHECK_CD; 763 else 764 port->port.flags |= ASYNC_CHECK_CD; 765 766 /* flow control settings ...*/ 767 flow_ctrl = 0; 768 port->port.flags &= ~ASYNC_CTS_FLOW; 769 if (C_CRTSCTS(tty)) { 770 port->port.flags |= ASYNC_CTS_FLOW; 771 flow_ctrl |= ISICOM_CTSRTS; 772 } 773 if (I_IXON(tty)) 774 flow_ctrl |= ISICOM_RESPOND_XONXOFF; 775 if (I_IXOFF(tty)) 776 flow_ctrl |= ISICOM_INITIATE_XONXOFF; 777 778 if (WaitTillCardIsFree(base) == 0) { 779 outw(0x8000 | (channel << shift_count) | 0x04, base); 780 outw(flow_ctrl << 8 | 0x05, base); 781 outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base); 782 InterruptTheCard(base); 783 } 784 785 /* rx enabled -> enable port for rx on the card */ 786 if (C_CREAD(tty)) { 787 card->port_status |= (1 << channel); 788 outw(card->port_status, base + 0x02); 789 } 790} 791 792/* open et all */ 793 794static inline void isicom_setup_board(struct isi_board *bp) 795{ 796 int channel; 797 struct isi_port *port; 798 799 bp->count++; 800 if (!(bp->status & BOARD_INIT)) { 801 port = bp->ports; 802 for (channel = 0; channel < bp->port_count; channel++, port++) 803 drop_dtr_rts(port); 804 } 805 bp->status |= BOARD_ACTIVE | BOARD_INIT; 806} 807 808/* Activate and thus setup board are protected from races against shutdown 809 by the tty_port mutex */ 810 811static int isicom_activate(struct tty_port *tport, struct tty_struct *tty) 812{ 813 struct isi_port *port = container_of(tport, struct isi_port, port); 814 struct isi_board *card = port->card; 815 unsigned long flags; 816 817 if (tty_port_alloc_xmit_buf(tport) < 0) 818 return -ENOMEM; 819 820 spin_lock_irqsave(&card->card_lock, flags); 821 isicom_setup_board(card); 822 823 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; 824 825 /* discard any residual data */ 826 if (WaitTillCardIsFree(card->base) == 0) { 827 outw(0x8000 | (port->channel << card->shift_count) | 0x02, 828 card->base); 829 outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base); 830 InterruptTheCard(card->base); 831 } 832 isicom_config_port(tty); 833 spin_unlock_irqrestore(&card->card_lock, flags); 834 835 return 0; 836} 837 838static int isicom_carrier_raised(struct tty_port *port) 839{ 840 struct isi_port *ip = container_of(port, struct isi_port, port); 841 return (ip->status & ISI_DCD)?1 : 0; 842} 843 844static struct tty_port *isicom_find_port(struct tty_struct *tty) 845{ 846 struct isi_port *port; 847 struct isi_board *card; 848 unsigned int board; 849 int line = tty->index; 850 851 if (line < 0 || line > PORT_COUNT-1) 852 return NULL; 853 board = BOARD(line); 854 card = &isi_card[board]; 855 856 if (!(card->status & FIRMWARE_LOADED)) 857 return NULL; 858 859 /* open on a port greater than the port count for the card !!! */ 860 if (line > ((board * 16) + card->port_count - 1)) 861 return NULL; 862 863 port = &isi_ports[line]; 864 if (isicom_paranoia_check(port, tty->name, "isicom_open")) 865 return NULL; 866 867 return &port->port; 868} 869 870static int isicom_open(struct tty_struct *tty, struct file *filp) 871{ 872 struct isi_port *port; 873 struct tty_port *tport; 874 875 tport = isicom_find_port(tty); 876 if (tport == NULL) 877 return -ENODEV; 878 port = container_of(tport, struct isi_port, port); 879 880 tty->driver_data = port; 881 return tty_port_open(tport, tty, filp); 882} 883 884/* close et all */ 885 886/* card->lock HAS to be held */ 887static void isicom_shutdown_port(struct isi_port *port) 888{ 889 struct isi_board *card = port->card; 890 891 if (--card->count < 0) { 892 pr_debug("%s: bad board(0x%lx) count %d.\n", 893 __func__, card->base, card->count); 894 card->count = 0; 895 } 896 /* last port was closed, shutdown that board too */ 897 if (!card->count) 898 card->status &= BOARD_ACTIVE; 899} 900 901static void isicom_flush_buffer(struct tty_struct *tty) 902{ 903 struct isi_port *port = tty->driver_data; 904 struct isi_board *card = port->card; 905 unsigned long flags; 906 907 if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer")) 908 return; 909 910 spin_lock_irqsave(&card->card_lock, flags); 911 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; 912 spin_unlock_irqrestore(&card->card_lock, flags); 913 914 tty_wakeup(tty); 915} 916 917static void isicom_shutdown(struct tty_port *port) 918{ 919 struct isi_port *ip = container_of(port, struct isi_port, port); 920 struct isi_board *card = ip->card; 921 unsigned long flags; 922 923 /* indicate to the card that no more data can be received 924 on this port */ 925 spin_lock_irqsave(&card->card_lock, flags); 926 card->port_status &= ~(1 << ip->channel); 927 outw(card->port_status, card->base + 0x02); 928 isicom_shutdown_port(ip); 929 spin_unlock_irqrestore(&card->card_lock, flags); 930 tty_port_free_xmit_buf(port); 931} 932 933static void isicom_close(struct tty_struct *tty, struct file *filp) 934{ 935 struct isi_port *ip = tty->driver_data; 936 struct tty_port *port; 937 938 if (ip == NULL) 939 return; 940 941 port = &ip->port; 942 if (isicom_paranoia_check(ip, tty->name, "isicom_close")) 943 return; 944 tty_port_close(port, tty, filp); 945} 946 947/* write et all */ 948static int isicom_write(struct tty_struct *tty, const unsigned char *buf, 949 int count) 950{ 951 struct isi_port *port = tty->driver_data; 952 struct isi_board *card = port->card; 953 unsigned long flags; 954 int cnt, total = 0; 955 956 if (isicom_paranoia_check(port, tty->name, "isicom_write")) 957 return 0; 958 959 spin_lock_irqsave(&card->card_lock, flags); 960 961 while (1) { 962 cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt 963 - 1, SERIAL_XMIT_SIZE - port->xmit_head)); 964 if (cnt <= 0) 965 break; 966 967 memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt); 968 port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE 969 - 1); 970 port->xmit_cnt += cnt; 971 buf += cnt; 972 count -= cnt; 973 total += cnt; 974 } 975 if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped) 976 port->status |= ISI_TXOK; 977 spin_unlock_irqrestore(&card->card_lock, flags); 978 return total; 979} 980 981/* put_char et all */ 982static int isicom_put_char(struct tty_struct *tty, unsigned char ch) 983{ 984 struct isi_port *port = tty->driver_data; 985 struct isi_board *card = port->card; 986 unsigned long flags; 987 988 if (isicom_paranoia_check(port, tty->name, "isicom_put_char")) 989 return 0; 990 991 spin_lock_irqsave(&card->card_lock, flags); 992 if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { 993 spin_unlock_irqrestore(&card->card_lock, flags); 994 return 0; 995 } 996 997 port->port.xmit_buf[port->xmit_head++] = ch; 998 port->xmit_head &= (SERIAL_XMIT_SIZE - 1); 999 port->xmit_cnt++; 1000 spin_unlock_irqrestore(&card->card_lock, flags); 1001 return 1; 1002} 1003 1004/* flush_chars et all */ 1005static void isicom_flush_chars(struct tty_struct *tty) 1006{ 1007 struct isi_port *port = tty->driver_data; 1008 1009 if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars")) 1010 return; 1011 1012 if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || 1013 !port->port.xmit_buf) 1014 return; 1015 1016 /* this tells the transmitter to consider this port for 1017 data output to the card ... that's the best we can do. */ 1018 port->status |= ISI_TXOK; 1019} 1020 1021/* write_room et all */ 1022static int isicom_write_room(struct tty_struct *tty) 1023{ 1024 struct isi_port *port = tty->driver_data; 1025 int free; 1026 1027 if (isicom_paranoia_check(port, tty->name, "isicom_write_room")) 1028 return 0; 1029 1030 free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; 1031 if (free < 0) 1032 free = 0; 1033 return free; 1034} 1035 1036/* chars_in_buffer et all */ 1037static int isicom_chars_in_buffer(struct tty_struct *tty) 1038{ 1039 struct isi_port *port = tty->driver_data; 1040 if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer")) 1041 return 0; 1042 return port->xmit_cnt; 1043} 1044 1045/* ioctl et all */ 1046static int isicom_send_break(struct tty_struct *tty, int length) 1047{ 1048 struct isi_port *port = tty->driver_data; 1049 struct isi_board *card = port->card; 1050 unsigned long base = card->base; 1051 1052 if (length == -1) 1053 return -EOPNOTSUPP; 1054 1055 if (!lock_card(card)) 1056 return -EINVAL; 1057 1058 outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base); 1059 outw((length & 0xff) << 8 | 0x00, base); 1060 outw((length & 0xff00), base); 1061 InterruptTheCard(base); 1062 1063 unlock_card(card); 1064 return 0; 1065} 1066 1067static int isicom_tiocmget(struct tty_struct *tty, struct file *file) 1068{ 1069 struct isi_port *port = tty->driver_data; 1070 /* just send the port status */ 1071 u16 status = port->status; 1072 1073 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) 1074 return -ENODEV; 1075 1076 return ((status & ISI_RTS) ? TIOCM_RTS : 0) | 1077 ((status & ISI_DTR) ? TIOCM_DTR : 0) | 1078 ((status & ISI_DCD) ? TIOCM_CAR : 0) | 1079 ((status & ISI_DSR) ? TIOCM_DSR : 0) | 1080 ((status & ISI_CTS) ? TIOCM_CTS : 0) | 1081 ((status & ISI_RI ) ? TIOCM_RI : 0); 1082} 1083 1084static int isicom_tiocmset(struct tty_struct *tty, struct file *file, 1085 unsigned int set, unsigned int clear) 1086{ 1087 struct isi_port *port = tty->driver_data; 1088 unsigned long flags; 1089 1090 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) 1091 return -ENODEV; 1092 1093 spin_lock_irqsave(&port->card->card_lock, flags); 1094 if (set & TIOCM_RTS) 1095 raise_rts(port); 1096 if (set & TIOCM_DTR) 1097 raise_dtr(port); 1098 1099 if (clear & TIOCM_RTS) 1100 drop_rts(port); 1101 if (clear & TIOCM_DTR) 1102 drop_dtr(port); 1103 spin_unlock_irqrestore(&port->card->card_lock, flags); 1104 1105 return 0; 1106} 1107 1108static int isicom_set_serial_info(struct tty_struct *tty, 1109 struct serial_struct __user *info) 1110{ 1111 struct isi_port *port = tty->driver_data; 1112 struct serial_struct newinfo; 1113 int reconfig_port; 1114 1115 if (copy_from_user(&newinfo, info, sizeof(newinfo))) 1116 return -EFAULT; 1117 1118 mutex_lock(&port->port.mutex); 1119 reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) != 1120 (newinfo.flags & ASYNC_SPD_MASK)); 1121 1122 if (!capable(CAP_SYS_ADMIN)) { 1123 if ((newinfo.close_delay != port->port.close_delay) || 1124 (newinfo.closing_wait != port->port.closing_wait) || 1125 ((newinfo.flags & ~ASYNC_USR_MASK) != 1126 (port->port.flags & ~ASYNC_USR_MASK))) { 1127 mutex_unlock(&port->port.mutex); 1128 return -EPERM; 1129 } 1130 port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) | 1131 (newinfo.flags & ASYNC_USR_MASK)); 1132 } else { 1133 port->port.close_delay = newinfo.close_delay; 1134 port->port.closing_wait = newinfo.closing_wait; 1135 port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) | 1136 (newinfo.flags & ASYNC_FLAGS)); 1137 } 1138 if (reconfig_port) { 1139 unsigned long flags; 1140 spin_lock_irqsave(&port->card->card_lock, flags); 1141 isicom_config_port(tty); 1142 spin_unlock_irqrestore(&port->card->card_lock, flags); 1143 } 1144 mutex_unlock(&port->port.mutex); 1145 return 0; 1146} 1147 1148static int isicom_get_serial_info(struct isi_port *port, 1149 struct serial_struct __user *info) 1150{ 1151 struct serial_struct out_info; 1152 1153 mutex_lock(&port->port.mutex); 1154 memset(&out_info, 0, sizeof(out_info)); 1155/* out_info.type = ? */ 1156 out_info.line = port - isi_ports; 1157 out_info.port = port->card->base; 1158 out_info.irq = port->card->irq; 1159 out_info.flags = port->port.flags; 1160/* out_info.baud_base = ? */ 1161 out_info.close_delay = port->port.close_delay; 1162 out_info.closing_wait = port->port.closing_wait; 1163 mutex_unlock(&port->port.mutex); 1164 if (copy_to_user(info, &out_info, sizeof(out_info))) 1165 return -EFAULT; 1166 return 0; 1167} 1168 1169static int isicom_ioctl(struct tty_struct *tty, struct file *filp, 1170 unsigned int cmd, unsigned long arg) 1171{ 1172 struct isi_port *port = tty->driver_data; 1173 void __user *argp = (void __user *)arg; 1174 1175 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) 1176 return -ENODEV; 1177 1178 switch (cmd) { 1179 case TIOCGSERIAL: 1180 return isicom_get_serial_info(port, argp); 1181 1182 case TIOCSSERIAL: 1183 return isicom_set_serial_info(tty, argp); 1184 1185 default: 1186 return -ENOIOCTLCMD; 1187 } 1188 return 0; 1189} 1190 1191/* set_termios et all */ 1192static void isicom_set_termios(struct tty_struct *tty, 1193 struct ktermios *old_termios) 1194{ 1195 struct isi_port *port = tty->driver_data; 1196 unsigned long flags; 1197 1198 if (isicom_paranoia_check(port, tty->name, "isicom_set_termios")) 1199 return; 1200 1201 if (tty->termios->c_cflag == old_termios->c_cflag && 1202 tty->termios->c_iflag == old_termios->c_iflag) 1203 return; 1204 1205 spin_lock_irqsave(&port->card->card_lock, flags); 1206 isicom_config_port(tty); 1207 spin_unlock_irqrestore(&port->card->card_lock, flags); 1208 1209 if ((old_termios->c_cflag & CRTSCTS) && 1210 !(tty->termios->c_cflag & CRTSCTS)) { 1211 tty->hw_stopped = 0; 1212 isicom_start(tty); 1213 } 1214} 1215 1216/* throttle et all */ 1217static void isicom_throttle(struct tty_struct *tty) 1218{ 1219 struct isi_port *port = tty->driver_data; 1220 struct isi_board *card = port->card; 1221 1222 if (isicom_paranoia_check(port, tty->name, "isicom_throttle")) 1223 return; 1224 1225 /* tell the card that this port cannot handle any more data for now */ 1226 card->port_status &= ~(1 << port->channel); 1227 outw(card->port_status, card->base + 0x02); 1228} 1229 1230/* unthrottle et all */ 1231static void isicom_unthrottle(struct tty_struct *tty) 1232{ 1233 struct isi_port *port = tty->driver_data; 1234 struct isi_board *card = port->card; 1235 1236 if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle")) 1237 return; 1238 1239 /* tell the card that this port is ready to accept more data */ 1240 card->port_status |= (1 << port->channel); 1241 outw(card->port_status, card->base + 0x02); 1242} 1243 1244/* stop et all */ 1245static void isicom_stop(struct tty_struct *tty) 1246{ 1247 struct isi_port *port = tty->driver_data; 1248 1249 if (isicom_paranoia_check(port, tty->name, "isicom_stop")) 1250 return; 1251 1252 /* this tells the transmitter not to consider this port for 1253 data output to the card. */ 1254 port->status &= ~ISI_TXOK; 1255} 1256 1257/* start et all */ 1258static void isicom_start(struct tty_struct *tty) 1259{ 1260 struct isi_port *port = tty->driver_data; 1261 1262 if (isicom_paranoia_check(port, tty->name, "isicom_start")) 1263 return; 1264 1265 /* this tells the transmitter to consider this port for 1266 data output to the card. */ 1267 port->status |= ISI_TXOK; 1268} 1269 1270static void isicom_hangup(struct tty_struct *tty) 1271{ 1272 struct isi_port *port = tty->driver_data; 1273 1274 if (isicom_paranoia_check(port, tty->name, "isicom_hangup")) 1275 return; 1276 tty_port_hangup(&port->port); 1277} 1278 1279 1280/* 1281 * Driver init and deinit functions 1282 */ 1283 1284static const struct tty_operations isicom_ops = { 1285 .open = isicom_open, 1286 .close = isicom_close, 1287 .write = isicom_write, 1288 .put_char = isicom_put_char, 1289 .flush_chars = isicom_flush_chars, 1290 .write_room = isicom_write_room, 1291 .chars_in_buffer = isicom_chars_in_buffer, 1292 .ioctl = isicom_ioctl, 1293 .set_termios = isicom_set_termios, 1294 .throttle = isicom_throttle, 1295 .unthrottle = isicom_unthrottle, 1296 .stop = isicom_stop, 1297 .start = isicom_start, 1298 .hangup = isicom_hangup, 1299 .flush_buffer = isicom_flush_buffer, 1300 .tiocmget = isicom_tiocmget, 1301 .tiocmset = isicom_tiocmset, 1302 .break_ctl = isicom_send_break, 1303}; 1304 1305static const struct tty_port_operations isicom_port_ops = { 1306 .carrier_raised = isicom_carrier_raised, 1307 .dtr_rts = isicom_dtr_rts, 1308 .activate = isicom_activate, 1309 .shutdown = isicom_shutdown, 1310}; 1311 1312static int __devinit reset_card(struct pci_dev *pdev, 1313 const unsigned int card, unsigned int *signature) 1314{ 1315 struct isi_board *board = pci_get_drvdata(pdev); 1316 unsigned long base = board->base; 1317 unsigned int sig, portcount = 0; 1318 int retval = 0; 1319 1320 dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1, 1321 base); 1322 1323 inw(base + 0x8); 1324 1325 msleep(10); 1326 1327 outw(0, base + 0x8); /* Reset */ 1328 1329 msleep(1000); 1330 1331 sig = inw(base + 0x4) & 0xff; 1332 1333 if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd && 1334 sig != 0xee) { 1335 dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible " 1336 "bad I/O Port Address 0x%lx).\n", card + 1, base); 1337 dev_dbg(&pdev->dev, "Sig=0x%x\n", sig); 1338 retval = -EIO; 1339 goto end; 1340 } 1341 1342 msleep(10); 1343 1344 portcount = inw(base + 0x2); 1345 if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 && 1346 portcount != 8 && portcount != 16)) { 1347 dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n", 1348 card + 1); 1349 retval = -EIO; 1350 goto end; 1351 } 1352 1353 switch (sig) { 1354 case 0xa5: 1355 case 0xbb: 1356 case 0xdd: 1357 board->port_count = (portcount == 4) ? 4 : 8; 1358 board->shift_count = 12; 1359 break; 1360 case 0xcc: 1361 case 0xee: 1362 board->port_count = 16; 1363 board->shift_count = 11; 1364 break; 1365 } 1366 dev_info(&pdev->dev, "-Done\n"); 1367 *signature = sig; 1368 1369end: 1370 return retval; 1371} 1372 1373static int __devinit load_firmware(struct pci_dev *pdev, 1374 const unsigned int index, const unsigned int signature) 1375{ 1376 struct isi_board *board = pci_get_drvdata(pdev); 1377 const struct firmware *fw; 1378 unsigned long base = board->base; 1379 unsigned int a; 1380 u16 word_count, status; 1381 int retval = -EIO; 1382 char *name; 1383 u8 *data; 1384 1385 struct stframe { 1386 u16 addr; 1387 u16 count; 1388 u8 data[0]; 1389 } *frame; 1390 1391 switch (signature) { 1392 case 0xa5: 1393 name = "isi608.bin"; 1394 break; 1395 case 0xbb: 1396 name = "isi608em.bin"; 1397 break; 1398 case 0xcc: 1399 name = "isi616em.bin"; 1400 break; 1401 case 0xdd: 1402 name = "isi4608.bin"; 1403 break; 1404 case 0xee: 1405 name = "isi4616.bin"; 1406 break; 1407 default: 1408 dev_err(&pdev->dev, "Unknown signature.\n"); 1409 goto end; 1410 } 1411 1412 retval = request_firmware(&fw, name, &pdev->dev); 1413 if (retval) 1414 goto end; 1415 1416 retval = -EIO; 1417 1418 for (frame = (struct stframe *)fw->data; 1419 frame < (struct stframe *)(fw->data + fw->size); 1420 frame = (struct stframe *)((u8 *)(frame + 1) + 1421 frame->count)) { 1422 if (WaitTillCardIsFree(base)) 1423 goto errrelfw; 1424 1425 outw(0xf0, base); /* start upload sequence */ 1426 outw(0x00, base); 1427 outw(frame->addr, base); /* lsb of address */ 1428 1429 word_count = frame->count / 2 + frame->count % 2; 1430 outw(word_count, base); 1431 InterruptTheCard(base); 1432 1433 udelay(100); /* 0x2f */ 1434 1435 if (WaitTillCardIsFree(base)) 1436 goto errrelfw; 1437 1438 status = inw(base + 0x4); 1439 if (status != 0) { 1440 dev_warn(&pdev->dev, "Card%d rejected load header:\n" 1441 "Address:0x%x\n" 1442 "Count:0x%x\n" 1443 "Status:0x%x\n", 1444 index + 1, frame->addr, frame->count, status); 1445 goto errrelfw; 1446 } 1447 outsw(base, frame->data, word_count); 1448 1449 InterruptTheCard(base); 1450 1451 udelay(50); /* 0x0f */ 1452 1453 if (WaitTillCardIsFree(base)) 1454 goto errrelfw; 1455 1456 status = inw(base + 0x4); 1457 if (status != 0) { 1458 dev_err(&pdev->dev, "Card%d got out of sync.Card " 1459 "Status:0x%x\n", index + 1, status); 1460 goto errrelfw; 1461 } 1462 } 1463 1464 for (frame = (struct stframe *)fw->data; 1465 frame < (struct stframe *)(fw->data + fw->size); 1466 frame = (struct stframe *)((u8 *)(frame + 1) + 1467 frame->count)) { 1468 if (WaitTillCardIsFree(base)) 1469 goto errrelfw; 1470 1471 outw(0xf1, base); /* start download sequence */ 1472 outw(0x00, base); 1473 outw(frame->addr, base); /* lsb of address */ 1474 1475 word_count = (frame->count >> 1) + frame->count % 2; 1476 outw(word_count + 1, base); 1477 InterruptTheCard(base); 1478 1479 udelay(50); /* 0xf */ 1480 1481 if (WaitTillCardIsFree(base)) 1482 goto errrelfw; 1483 1484 status = inw(base + 0x4); 1485 if (status != 0) { 1486 dev_warn(&pdev->dev, "Card%d rejected verify header:\n" 1487 "Address:0x%x\n" 1488 "Count:0x%x\n" 1489 "Status: 0x%x\n", 1490 index + 1, frame->addr, frame->count, status); 1491 goto errrelfw; 1492 } 1493 1494 data = kmalloc(word_count * 2, GFP_KERNEL); 1495 if (data == NULL) { 1496 dev_err(&pdev->dev, "Card%d, firmware upload " 1497 "failed, not enough memory\n", index + 1); 1498 goto errrelfw; 1499 } 1500 inw(base); 1501 insw(base, data, word_count); 1502 InterruptTheCard(base); 1503 1504 for (a = 0; a < frame->count; a++) 1505 if (data[a] != frame->data[a]) { 1506 kfree(data); 1507 dev_err(&pdev->dev, "Card%d, firmware upload " 1508 "failed\n", index + 1); 1509 goto errrelfw; 1510 } 1511 kfree(data); 1512 1513 udelay(50); /* 0xf */ 1514 1515 if (WaitTillCardIsFree(base)) 1516 goto errrelfw; 1517 1518 status = inw(base + 0x4); 1519 if (status != 0) { 1520 dev_err(&pdev->dev, "Card%d verify got out of sync. " 1521 "Card Status:0x%x\n", index + 1, status); 1522 goto errrelfw; 1523 } 1524 } 1525 1526 /* xfer ctrl */ 1527 if (WaitTillCardIsFree(base)) 1528 goto errrelfw; 1529 1530 outw(0xf2, base); 1531 outw(0x800, base); 1532 outw(0x0, base); 1533 outw(0x0, base); 1534 InterruptTheCard(base); 1535 outw(0x0, base + 0x4); /* for ISI4608 cards */ 1536 1537 board->status |= FIRMWARE_LOADED; 1538 retval = 0; 1539 1540errrelfw: 1541 release_firmware(fw); 1542end: 1543 return retval; 1544} 1545 1546/* 1547 * Insmod can set static symbols so keep these static 1548 */ 1549static unsigned int card_count; 1550 1551static int __devinit isicom_probe(struct pci_dev *pdev, 1552 const struct pci_device_id *ent) 1553{ 1554 unsigned int uninitialized_var(signature), index; 1555 int retval = -EPERM; 1556 struct isi_board *board = NULL; 1557 1558 if (card_count >= BOARD_COUNT) 1559 goto err; 1560 1561 retval = pci_enable_device(pdev); 1562 if (retval) { 1563 dev_err(&pdev->dev, "failed to enable\n"); 1564 goto err; 1565 } 1566 1567 dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device); 1568 1569 /* allot the first empty slot in the array */ 1570 for (index = 0; index < BOARD_COUNT; index++) { 1571 if (isi_card[index].base == 0) { 1572 board = &isi_card[index]; 1573 break; 1574 } 1575 } 1576 if (index == BOARD_COUNT) { 1577 retval = -ENODEV; 1578 goto err_disable; 1579 } 1580 1581 board->index = index; 1582 board->base = pci_resource_start(pdev, 3); 1583 board->irq = pdev->irq; 1584 card_count++; 1585 1586 pci_set_drvdata(pdev, board); 1587 1588 retval = pci_request_region(pdev, 3, ISICOM_NAME); 1589 if (retval) { 1590 dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d " 1591 "will be disabled.\n", board->base, board->base + 15, 1592 index + 1); 1593 retval = -EBUSY; 1594 goto errdec; 1595 } 1596 1597 retval = request_irq(board->irq, isicom_interrupt, 1598 IRQF_SHARED | IRQF_DISABLED, ISICOM_NAME, board); 1599 if (retval < 0) { 1600 dev_err(&pdev->dev, "Could not install handler at Irq %d. " 1601 "Card%d will be disabled.\n", board->irq, index + 1); 1602 goto errunrr; 1603 } 1604 1605 retval = reset_card(pdev, index, &signature); 1606 if (retval < 0) 1607 goto errunri; 1608 1609 retval = load_firmware(pdev, index, signature); 1610 if (retval < 0) 1611 goto errunri; 1612 1613 for (index = 0; index < board->port_count; index++) 1614 tty_register_device(isicom_normal, board->index * 16 + index, 1615 &pdev->dev); 1616 1617 return 0; 1618 1619errunri: 1620 free_irq(board->irq, board); 1621errunrr: 1622 pci_release_region(pdev, 3); 1623errdec: 1624 board->base = 0; 1625 card_count--; 1626err_disable: 1627 pci_disable_device(pdev); 1628err: 1629 return retval; 1630} 1631 1632static void __devexit isicom_remove(struct pci_dev *pdev) 1633{ 1634 struct isi_board *board = pci_get_drvdata(pdev); 1635 unsigned int i; 1636 1637 for (i = 0; i < board->port_count; i++) 1638 tty_unregister_device(isicom_normal, board->index * 16 + i); 1639 1640 free_irq(board->irq, board); 1641 pci_release_region(pdev, 3); 1642 board->base = 0; 1643 card_count--; 1644 pci_disable_device(pdev); 1645} 1646 1647static int __init isicom_init(void) 1648{ 1649 int retval, idx, channel; 1650 struct isi_port *port; 1651 1652 for (idx = 0; idx < BOARD_COUNT; idx++) { 1653 port = &isi_ports[idx * 16]; 1654 isi_card[idx].ports = port; 1655 spin_lock_init(&isi_card[idx].card_lock); 1656 for (channel = 0; channel < 16; channel++, port++) { 1657 tty_port_init(&port->port); 1658 port->port.ops = &isicom_port_ops; 1659 port->magic = ISICOM_MAGIC; 1660 port->card = &isi_card[idx]; 1661 port->channel = channel; 1662 port->port.close_delay = 50 * HZ/100; 1663 port->port.closing_wait = 3000 * HZ/100; 1664 port->status = 0; 1665 /* . . . */ 1666 } 1667 isi_card[idx].base = 0; 1668 isi_card[idx].irq = 0; 1669 } 1670 1671 /* tty driver structure initialization */ 1672 isicom_normal = alloc_tty_driver(PORT_COUNT); 1673 if (!isicom_normal) { 1674 retval = -ENOMEM; 1675 goto error; 1676 } 1677 1678 isicom_normal->owner = THIS_MODULE; 1679 isicom_normal->name = "ttyM"; 1680 isicom_normal->major = ISICOM_NMAJOR; 1681 isicom_normal->minor_start = 0; 1682 isicom_normal->type = TTY_DRIVER_TYPE_SERIAL; 1683 isicom_normal->subtype = SERIAL_TYPE_NORMAL; 1684 isicom_normal->init_termios = tty_std_termios; 1685 isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | 1686 CLOCAL; 1687 isicom_normal->flags = TTY_DRIVER_REAL_RAW | 1688 TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK; 1689 tty_set_operations(isicom_normal, &isicom_ops); 1690 1691 retval = tty_register_driver(isicom_normal); 1692 if (retval) { 1693 pr_debug("Couldn't register the dialin driver\n"); 1694 goto err_puttty; 1695 } 1696 1697 retval = pci_register_driver(&isicom_driver); 1698 if (retval < 0) { 1699 pr_err("Unable to register pci driver.\n"); 1700 goto err_unrtty; 1701 } 1702 1703 mod_timer(&tx, jiffies + 1); 1704 1705 return 0; 1706err_unrtty: 1707 tty_unregister_driver(isicom_normal); 1708err_puttty: 1709 put_tty_driver(isicom_normal); 1710error: 1711 return retval; 1712} 1713 1714static void __exit isicom_exit(void) 1715{ 1716 del_timer_sync(&tx); 1717 1718 pci_unregister_driver(&isicom_driver); 1719 tty_unregister_driver(isicom_normal); 1720 put_tty_driver(isicom_normal); 1721} 1722 1723module_init(isicom_init); 1724module_exit(isicom_exit); 1725 1726MODULE_AUTHOR("MultiTech"); 1727MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech"); 1728MODULE_LICENSE("GPL"); 1729MODULE_FIRMWARE("isi608.bin"); 1730MODULE_FIRMWARE("isi608em.bin"); 1731MODULE_FIRMWARE("isi616em.bin"); 1732MODULE_FIRMWARE("isi4608.bin"); 1733MODULE_FIRMWARE("isi4616.bin"); 1734