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authorJiri Slaby <jirislaby@gmail.com>2006-12-08 05:38:21 -0500
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-08 11:28:54 -0500
commita8dea4ec8012b5f55f8a68819a1809fe70635e29 (patch)
treeb5d711cb5cf7d01f5ed007d1f17fb3dc69e29088 /drivers/char/mxser_new.c
parentc88cb8f952e28d11af6b168eca28c08560009cca (diff)
[PATCH] Char: mxser_new, code upside down
Reorder functions upside down not to have too many prototypes of each function and have some order (similar to other drivers). Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char/mxser_new.c')
-rw-r--r--drivers/char/mxser_new.c3045
1 files changed, 1488 insertions, 1557 deletions
diff --git a/drivers/char/mxser_new.c b/drivers/char/mxser_new.c
index 0e22f8010446..92ca016d2e3e 100644
--- a/drivers/char/mxser_new.c
+++ b/drivers/char/mxser_new.c
@@ -191,7 +191,6 @@ static const struct mxpciuart_info Gpci_uart_info[UART_INFO_NUM] = {
191 {MOXA_MUST_MU860_HWID, 128, 128, 128, 96, 96, 32, 921600L} 191 {MOXA_MUST_MU860_HWID, 128, 128, 128, 96, 96, 32, 921600L}
192}; 192};
193 193
194
195static struct pci_device_id mxser_pcibrds[] = { 194static struct pci_device_id mxser_pcibrds[] = {
196 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C168), 195 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C168),
197 .driver_data = MXSER_BOARD_C168_PCI }, 196 .driver_data = MXSER_BOARD_C168_PCI },
@@ -377,57 +376,6 @@ static struct mxser_mon_ext mon_data_ext;
377static int mxser_set_baud_method[MXSER_PORTS + 1]; 376static int mxser_set_baud_method[MXSER_PORTS + 1];
378static spinlock_t gm_lock; 377static spinlock_t gm_lock;
379 378
380/*
381 * static functions:
382 */
383
384static int mxser_init(void);
385
386/* static void mxser_poll(unsigned long); */
387static int mxser_get_ISA_conf(int, struct mxser_board *);
388static void mxser_do_softint(void *);
389static int mxser_open(struct tty_struct *, struct file *);
390static void mxser_close(struct tty_struct *, struct file *);
391static int mxser_write(struct tty_struct *, const unsigned char *, int);
392static int mxser_write_room(struct tty_struct *);
393static void mxser_flush_buffer(struct tty_struct *);
394static int mxser_chars_in_buffer(struct tty_struct *);
395static void mxser_flush_chars(struct tty_struct *);
396static void mxser_put_char(struct tty_struct *, unsigned char);
397static int mxser_ioctl(struct tty_struct *, struct file *, uint, ulong);
398static int mxser_ioctl_special(unsigned int, void __user *);
399static void mxser_throttle(struct tty_struct *);
400static void mxser_unthrottle(struct tty_struct *);
401static void mxser_set_termios(struct tty_struct *, struct termios *);
402static void mxser_stop(struct tty_struct *);
403static void mxser_start(struct tty_struct *);
404static void mxser_hangup(struct tty_struct *);
405static void mxser_rs_break(struct tty_struct *, int);
406static irqreturn_t mxser_interrupt(int, void *, struct pt_regs *);
407static void mxser_receive_chars(struct mxser_port *, int *);
408static void mxser_transmit_chars(struct mxser_port *);
409static void mxser_check_modem_status(struct mxser_port *, int);
410static int mxser_block_til_ready(struct tty_struct *, struct file *,
411 struct mxser_port *);
412static int mxser_startup(struct mxser_port *);
413static void mxser_shutdown(struct mxser_port *);
414static int mxser_change_speed(struct mxser_port *, struct termios *);
415static int mxser_get_serial_info(struct mxser_port *,
416 struct serial_struct __user *);
417static int mxser_set_serial_info(struct mxser_port *,
418 struct serial_struct __user *);
419static int mxser_get_lsr_info(struct mxser_port *, unsigned int __user *);
420static void mxser_send_break(struct mxser_port *, int);
421static int mxser_tiocmget(struct tty_struct *, struct file *);
422static int mxser_tiocmset(struct tty_struct *, struct file *, unsigned int,
423 unsigned int);
424static int mxser_set_baud(struct mxser_port *, long);
425static void mxser_wait_until_sent(struct tty_struct *, int);
426
427static void mxser_startrx(struct tty_struct *);
428static void mxser_stoprx(struct tty_struct *);
429
430
431static int CheckIsMoxaMust(int io) 379static int CheckIsMoxaMust(int io)
432{ 380{
433 u8 oldmcr, hwid; 381 u8 oldmcr, hwid;
@@ -453,75 +401,6 @@ static int CheckIsMoxaMust(int io)
453 401
454/* above is modified by Victor Yu. 08-15-2002 */ 402/* above is modified by Victor Yu. 08-15-2002 */
455 403
456static const struct tty_operations mxser_ops = {
457 .open = mxser_open,
458 .close = mxser_close,
459 .write = mxser_write,
460 .put_char = mxser_put_char,
461 .flush_chars = mxser_flush_chars,
462 .write_room = mxser_write_room,
463 .chars_in_buffer = mxser_chars_in_buffer,
464 .flush_buffer = mxser_flush_buffer,
465 .ioctl = mxser_ioctl,
466 .throttle = mxser_throttle,
467 .unthrottle = mxser_unthrottle,
468 .set_termios = mxser_set_termios,
469 .stop = mxser_stop,
470 .start = mxser_start,
471 .hangup = mxser_hangup,
472 .break_ctl = mxser_rs_break,
473 .wait_until_sent = mxser_wait_until_sent,
474 .tiocmget = mxser_tiocmget,
475 .tiocmset = mxser_tiocmset,
476};
477
478/*
479 * The MOXA Smartio/Industio serial driver boot-time initialization code!
480 */
481
482static int __init mxser_module_init(void)
483{
484 int ret;
485
486 pr_debug("Loading module mxser ...\n");
487 ret = mxser_init();
488 pr_debug("Done.\n");
489 return ret;
490}
491
492static void __exit mxser_module_exit(void)
493{
494 int i, err;
495
496 pr_debug("Unloading module mxser ...\n");
497
498 err = tty_unregister_driver(mxvar_sdriver);
499 if (!err)
500 put_tty_driver(mxvar_sdriver);
501 else
502 printk(KERN_ERR "Couldn't unregister MOXA Smartio/Industio family serial driver\n");
503
504 for (i = 0; i < MXSER_BOARDS; i++) {
505 struct pci_dev *pdev;
506
507 if (mxser_boards[i].board_type == -1)
508 continue;
509 else {
510 pdev = mxser_boards[i].pdev;
511 free_irq(mxser_boards[i].irq, &mxser_boards[i]);
512 if (pdev != NULL) { /* PCI */
513 pci_release_region(pdev, 2);
514 pci_release_region(pdev, 3);
515 pci_dev_put(pdev);
516 } else {
517 release_region(mxser_boards[i].ports[0].ioaddr, 8 * mxser_boards[i].nports);
518 release_region(mxser_boards[i].vector, 1);
519 }
520 }
521 }
522 pr_debug("Done.\n");
523}
524
525static void process_txrx_fifo(struct mxser_port *info) 404static void process_txrx_fifo(struct mxser_port *info)
526{ 405{
527 int i; 406 int i;
@@ -542,349 +421,581 @@ static void process_txrx_fifo(struct mxser_port *info)
542 } 421 }
543} 422}
544 423
545static int __devinit mxser_initbrd(struct mxser_board *brd) 424static void mxser_do_softint(void *private_)
546{ 425{
547 struct mxser_port *info; 426 struct mxser_port *info = private_;
548 unsigned int i; 427 struct tty_struct *tty;
549 int retval;
550 428
551 printk(KERN_INFO "max. baud rate = %d bps.\n", brd->ports[0].max_baud); 429 tty = info->tty;
552 430
553 for (i = 0; i < brd->nports; i++) { 431 if (test_and_clear_bit(MXSER_EVENT_TXLOW, &info->event))
554 info = &brd->ports[i]; 432 tty_wakeup(tty);
555 info->board = brd; 433 if (test_and_clear_bit(MXSER_EVENT_HANGUP, &info->event))
556 info->stop_rx = 0; 434 tty_hangup(tty);
557 info->ldisc_stop_rx = 0; 435}
558 436
559 /* Enhance mode enabled here */ 437static unsigned char mxser_get_msr(int baseaddr, int mode, int port)
560 if (brd->chip_flag != MOXA_OTHER_UART) 438{
561 ENABLE_MOXA_MUST_ENCHANCE_MODE(info->ioaddr); 439 unsigned char status = 0;
562 440
563 info->flags = ASYNC_SHARE_IRQ; 441 status = inb(baseaddr + UART_MSR);
564 info->type = brd->uart_type;
565 442
566 process_txrx_fifo(info); 443 mxser_msr[port] &= 0x0F;
444 mxser_msr[port] |= status;
445 status = mxser_msr[port];
446 if (mode)
447 mxser_msr[port] = 0;
567 448
568 info->custom_divisor = info->baud_base * 16; 449 return status;
569 info->close_delay = 5 * HZ / 10; 450}
570 info->closing_wait = 30 * HZ;
571 INIT_WORK(&info->tqueue, mxser_do_softint, info);
572 info->normal_termios = mxvar_sdriver->init_termios;
573 init_waitqueue_head(&info->open_wait);
574 init_waitqueue_head(&info->close_wait);
575 init_waitqueue_head(&info->delta_msr_wait);
576 memset(&info->mon_data, 0, sizeof(struct mxser_mon));
577 info->err_shadow = 0;
578 spin_lock_init(&info->slock);
579 451
580 /* before set INT ISR, disable all int */ 452static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp,
581 outb(inb(info->ioaddr + UART_IER) & 0xf0, 453 struct mxser_port *port)
582 info->ioaddr + UART_IER); 454{
455 DECLARE_WAITQUEUE(wait, current);
456 int retval;
457 int do_clocal = 0;
458 unsigned long flags;
459
460 /*
461 * If non-blocking mode is set, or the port is not enabled,
462 * then make the check up front and then exit.
463 */
464 if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
465 port->flags |= ASYNC_NORMAL_ACTIVE;
466 return 0;
583 } 467 }
468
469 if (tty->termios->c_cflag & CLOCAL)
470 do_clocal = 1;
471
584 /* 472 /*
585 * Allocate the IRQ if necessary 473 * Block waiting for the carrier detect and the line to become
474 * free (i.e., not in use by the callout). While we are in
475 * this loop, port->count is dropped by one, so that
476 * mxser_close() knows when to free things. We restore it upon
477 * exit, either normal or abnormal.
586 */ 478 */
479 retval = 0;
480 add_wait_queue(&port->open_wait, &wait);
587 481
588 retval = request_irq(brd->irq, mxser_interrupt, 482 spin_lock_irqsave(&port->slock, flags);
589 (brd->ports[0].flags & ASYNC_SHARE_IRQ) ? IRQF_SHARED : 483 if (!tty_hung_up_p(filp))
590 IRQF_DISABLED, "mxser", brd); 484 port->count--;
591 if (retval) { 485 spin_unlock_irqrestore(&port->slock, flags);
592 printk(KERN_ERR "Board %s: Request irq failed, IRQ (%d) may " 486 port->blocked_open++;
593 "conflict with another device.\n", 487 while (1) {
594 mxser_brdname[brd->board_type - 1], brd->irq); 488 spin_lock_irqsave(&port->slock, flags);
595 return retval; 489 outb(inb(port->ioaddr + UART_MCR) |
490 UART_MCR_DTR | UART_MCR_RTS, port->ioaddr + UART_MCR);
491 spin_unlock_irqrestore(&port->slock, flags);
492 set_current_state(TASK_INTERRUPTIBLE);
493 if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
494 if (port->flags & ASYNC_HUP_NOTIFY)
495 retval = -EAGAIN;
496 else
497 retval = -ERESTARTSYS;
498 break;
499 }
500 if (!(port->flags & ASYNC_CLOSING) &&
501 (do_clocal ||
502 (inb(port->ioaddr + UART_MSR) & UART_MSR_DCD)))
503 break;
504 if (signal_pending(current)) {
505 retval = -ERESTARTSYS;
506 break;
507 }
508 schedule();
596 } 509 }
510 set_current_state(TASK_RUNNING);
511 remove_wait_queue(&port->open_wait, &wait);
512 if (!tty_hung_up_p(filp))
513 port->count++;
514 port->blocked_open--;
515 if (retval)
516 return retval;
517 port->flags |= ASYNC_NORMAL_ACTIVE;
597 return 0; 518 return 0;
598} 519}
599 520
600static int __init mxser_get_PCI_conf(int board_type, struct mxser_board *brd, 521static int mxser_set_baud(struct mxser_port *info, long newspd)
601 struct pci_dev *pdev)
602{ 522{
603 unsigned int i, j; 523 int quot = 0;
604 unsigned long ioaddress; 524 unsigned char cval;
605 int retval; 525 int ret = 0;
526 unsigned long flags;
606 527
607 /* io address */ 528 if (!info->tty || !info->tty->termios)
608 brd->board_type = board_type; 529 return ret;
609 brd->nports = mxser_numports[board_type - 1];
610 ioaddress = pci_resource_start(pdev, 2);
611 retval = pci_request_region(pdev, 2, "mxser(IO)");
612 if (retval)
613 goto err;
614 530
615 for (i = 0; i < brd->nports; i++) 531 if (!(info->ioaddr))
616 brd->ports[i].ioaddr = ioaddress + 8 * i; 532 return ret;
617 533
618 /* vector */ 534 if (newspd > info->max_baud)
619 ioaddress = pci_resource_start(pdev, 3); 535 return 0;
620 retval = pci_request_region(pdev, 3, "mxser(vector)");
621 if (retval)
622 goto err_relio;
623 brd->vector = ioaddress;
624 536
625 /* irq */ 537 info->realbaud = newspd;
626 brd->irq = pdev->irq; 538 if (newspd == 134) {
539 quot = (2 * info->baud_base / 269);
540 } else if (newspd) {
541 quot = info->baud_base / newspd;
542 if (quot == 0)
543 quot = 1;
544 } else {
545 quot = 0;
546 }
627 547
628 brd->chip_flag = CheckIsMoxaMust(brd->ports[0].ioaddr); 548 info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base);
629 brd->uart_type = PORT_16550A; 549 info->timeout += HZ / 50; /* Add .02 seconds of slop */
630 brd->vector_mask = 0;
631 550
632 for (i = 0; i < brd->nports; i++) { 551 if (quot) {
633 for (j = 0; j < UART_INFO_NUM; j++) { 552 spin_lock_irqsave(&info->slock, flags);
634 if (Gpci_uart_info[j].type == brd->chip_flag) { 553 info->MCR |= UART_MCR_DTR;
635 brd->ports[i].max_baud = 554 outb(info->MCR, info->ioaddr + UART_MCR);
636 Gpci_uart_info[j].max_baud; 555 spin_unlock_irqrestore(&info->slock, flags);
556 } else {
557 spin_lock_irqsave(&info->slock, flags);
558 info->MCR &= ~UART_MCR_DTR;
559 outb(info->MCR, info->ioaddr + UART_MCR);
560 spin_unlock_irqrestore(&info->slock, flags);
561 return ret;
562 }
637 563
638 /* exception....CP-102 */ 564 cval = inb(info->ioaddr + UART_LCR);
639 if (board_type == MXSER_BOARD_CP102) 565
640 brd->ports[i].max_baud = 921600; 566 outb(cval | UART_LCR_DLAB, info->ioaddr + UART_LCR); /* set DLAB */
567
568 outb(quot & 0xff, info->ioaddr + UART_DLL); /* LS of divisor */
569 outb(quot >> 8, info->ioaddr + UART_DLM); /* MS of divisor */
570 outb(cval, info->ioaddr + UART_LCR); /* reset DLAB */
571
572
573 return ret;
574}
575
576/*
577 * This routine is called to set the UART divisor registers to match
578 * the specified baud rate for a serial port.
579 */
580static int mxser_change_speed(struct mxser_port *info,
581 struct termios *old_termios)
582{
583 unsigned cflag, cval, fcr;
584 int ret = 0;
585 unsigned char status;
586 long baud;
587 unsigned long flags;
588
589 if (!info->tty || !info->tty->termios)
590 return ret;
591 cflag = info->tty->termios->c_cflag;
592 if (!(info->ioaddr))
593 return ret;
594
595#ifndef B921600
596#define B921600 (B460800 +1)
597#endif
598 if (mxser_set_baud_method[info->tty->index] == 0) {
599 baud = tty_get_baud_rate(info->tty);
600 mxser_set_baud(info, baud);
601 }
602
603 /* byte size and parity */
604 switch (cflag & CSIZE) {
605 case CS5:
606 cval = 0x00;
607 break;
608 case CS6:
609 cval = 0x01;
610 break;
611 case CS7:
612 cval = 0x02;
613 break;
614 case CS8:
615 cval = 0x03;
616 break;
617 default:
618 cval = 0x00;
619 break; /* too keep GCC shut... */
620 }
621 if (cflag & CSTOPB)
622 cval |= 0x04;
623 if (cflag & PARENB)
624 cval |= UART_LCR_PARITY;
625 if (!(cflag & PARODD))
626 cval |= UART_LCR_EPAR;
627 if (cflag & CMSPAR)
628 cval |= UART_LCR_SPAR;
629
630 if ((info->type == PORT_8250) || (info->type == PORT_16450)) {
631 if (info->board->chip_flag) {
632 fcr = UART_FCR_ENABLE_FIFO;
633 fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
634 SET_MOXA_MUST_FIFO_VALUE(info);
635 } else
636 fcr = 0;
637 } else {
638 fcr = UART_FCR_ENABLE_FIFO;
639 /* following add by Victor Yu. 08-30-2002 */
640 if (info->board->chip_flag) {
641 fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
642 SET_MOXA_MUST_FIFO_VALUE(info);
643 } else {
644 /* above add by Victor Yu. 08-30-2002 */
645 switch (info->rx_trigger) {
646 case 1:
647 fcr |= UART_FCR_TRIGGER_1;
648 break;
649 case 4:
650 fcr |= UART_FCR_TRIGGER_4;
651 break;
652 case 8:
653 fcr |= UART_FCR_TRIGGER_8;
654 break;
655 default:
656 fcr |= UART_FCR_TRIGGER_14;
641 break; 657 break;
642 } 658 }
643 } 659 }
644 } 660 }
645 661
646 if (brd->chip_flag == MOXA_MUST_MU860_HWID) { 662 /* CTS flow control flag and modem status interrupts */
647 for (i = 0; i < brd->nports; i++) { 663 info->IER &= ~UART_IER_MSI;
648 if (i < 4) 664 info->MCR &= ~UART_MCR_AFE;
649 brd->ports[i].opmode_ioaddr = ioaddress + 4; 665 if (cflag & CRTSCTS) {
650 else 666 info->flags |= ASYNC_CTS_FLOW;
651 brd->ports[i].opmode_ioaddr = ioaddress + 0x0c; 667 info->IER |= UART_IER_MSI;
668 if ((info->type == PORT_16550A) || (info->board->chip_flag)) {
669 info->MCR |= UART_MCR_AFE;
670/* status = mxser_get_msr(info->ioaddr, 0, info->port); */
671/*
672 save_flags(flags);
673 cli();
674 status = inb(baseaddr + UART_MSR);
675 restore_flags(flags);
676*/
677 /* mxser_check_modem_status(info, status); */
678 } else {
679/* status = mxser_get_msr(info->ioaddr, 0, info->port); */
680 /* MX_LOCK(&info->slock); */
681 status = inb(info->ioaddr + UART_MSR);
682 /* MX_UNLOCK(&info->slock); */
683 if (info->tty->hw_stopped) {
684 if (status & UART_MSR_CTS) {
685 info->tty->hw_stopped = 0;
686 if (info->type != PORT_16550A &&
687 !info->board->chip_flag) {
688 outb(info->IER & ~UART_IER_THRI,
689 info->ioaddr +
690 UART_IER);
691 info->IER |= UART_IER_THRI;
692 outb(info->IER, info->ioaddr +
693 UART_IER);
694 }
695 set_bit(MXSER_EVENT_TXLOW, &info->event);
696 schedule_work(&info->tqueue); }
697 } else {
698 if (!(status & UART_MSR_CTS)) {
699 info->tty->hw_stopped = 1;
700 if ((info->type != PORT_16550A) &&
701 (!info->board->chip_flag)) {
702 info->IER &= ~UART_IER_THRI;
703 outb(info->IER, info->ioaddr +
704 UART_IER);
705 }
706 }
707 }
652 } 708 }
653 outb(0, ioaddress + 4); /* default set to RS232 mode */ 709 } else {
654 outb(0, ioaddress + 0x0c); /* default set to RS232 mode */ 710 info->flags &= ~ASYNC_CTS_FLOW;
655 } 711 }
656 712 outb(info->MCR, info->ioaddr + UART_MCR);
657 for (i = 0; i < brd->nports; i++) { 713 if (cflag & CLOCAL) {
658 brd->vector_mask |= (1 << i); 714 info->flags &= ~ASYNC_CHECK_CD;
659 brd->ports[i].baud_base = 921600; 715 } else {
716 info->flags |= ASYNC_CHECK_CD;
717 info->IER |= UART_IER_MSI;
660 } 718 }
661 return 0; 719 outb(info->IER, info->ioaddr + UART_IER);
662err_relio:
663 pci_release_region(pdev, 2);
664err:
665 return retval;
666}
667
668static int __init mxser_init(void)
669{
670 struct pci_dev *pdev = NULL;
671 struct mxser_board *brd;
672 unsigned int i, m;
673 int retval, b, n;
674
675 mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1);
676 if (!mxvar_sdriver)
677 return -ENOMEM;
678 spin_lock_init(&gm_lock);
679 720
680 for (i = 0; i < MXSER_BOARDS; i++) 721 /*
681 mxser_boards[i].board_type = -1; 722 * Set up parity check flag
723 */
724 info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
725 if (I_INPCK(info->tty))
726 info->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
727 if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
728 info->read_status_mask |= UART_LSR_BI;
682 729
683 printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n", 730 info->ignore_status_mask = 0;
684 MXSER_VERSION);
685 731
686 /* Initialize the tty_driver structure */ 732 if (I_IGNBRK(info->tty)) {
687 mxvar_sdriver->magic = TTY_DRIVER_MAGIC; 733 info->ignore_status_mask |= UART_LSR_BI;
688 mxvar_sdriver->name = "ttyM"; 734 info->read_status_mask |= UART_LSR_BI;
689 mxvar_sdriver->major = ttymajor; 735 /*
690 mxvar_sdriver->minor_start = 0; 736 * If we're ignore parity and break indicators, ignore
691 mxvar_sdriver->num = MXSER_PORTS + 1; 737 * overruns too. (For real raw support).
692 mxvar_sdriver->type = TTY_DRIVER_TYPE_SERIAL; 738 */
693 mxvar_sdriver->subtype = SERIAL_TYPE_NORMAL; 739 if (I_IGNPAR(info->tty)) {
694 mxvar_sdriver->init_termios = tty_std_termios; 740 info->ignore_status_mask |=
695 mxvar_sdriver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; 741 UART_LSR_OE |
696 mxvar_sdriver->flags = TTY_DRIVER_REAL_RAW; 742 UART_LSR_PE |
697 tty_set_operations(mxvar_sdriver, &mxser_ops); 743 UART_LSR_FE;
698 mxvar_sdriver->ttys = mxvar_tty; 744 info->read_status_mask |=
699 mxvar_sdriver->termios = mxvar_termios; 745 UART_LSR_OE |
700 mxvar_sdriver->termios_locked = mxvar_termios_locked; 746 UART_LSR_PE |
747 UART_LSR_FE;
748 }
749 }
750 /* following add by Victor Yu. 09-02-2002 */
751 if (info->board->chip_flag) {
752 spin_lock_irqsave(&info->slock, flags);
753 SET_MOXA_MUST_XON1_VALUE(info->ioaddr, START_CHAR(info->tty));
754 SET_MOXA_MUST_XOFF1_VALUE(info->ioaddr, STOP_CHAR(info->tty));
755 if (I_IXON(info->tty)) {
756 ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
757 } else {
758 DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
759 }
760 if (I_IXOFF(info->tty)) {
761 ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
762 } else {
763 DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
764 }
765 /*
766 if ( I_IXANY(info->tty) ) {
767 info->MCR |= MOXA_MUST_MCR_XON_ANY;
768 ENABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->ioaddr);
769 } else {
770 info->MCR &= ~MOXA_MUST_MCR_XON_ANY;
771 DISABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->ioaddr);
772 }
773 */
774 spin_unlock_irqrestore(&info->slock, flags);
775 }
776 /* above add by Victor Yu. 09-02-2002 */
701 777
702 mxvar_diagflag = 0;
703 778
704 m = 0; 779 outb(fcr, info->ioaddr + UART_FCR); /* set fcr */
705 /* Start finding ISA boards here */ 780 outb(cval, info->ioaddr + UART_LCR);
706 for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
707 int cap;
708 781
709 if (!(cap = mxserBoardCAP[b])) 782 return ret;
710 continue; 783}
711 784
712 brd = &mxser_boards[m]; 785static void mxser_check_modem_status(struct mxser_port *port, int status)
713 retval = mxser_get_ISA_conf(cap, brd); 786{
787 /* update input line counters */
788 if (status & UART_MSR_TERI)
789 port->icount.rng++;
790 if (status & UART_MSR_DDSR)
791 port->icount.dsr++;
792 if (status & UART_MSR_DDCD)
793 port->icount.dcd++;
794 if (status & UART_MSR_DCTS)
795 port->icount.cts++;
796 port->mon_data.modem_status = status;
797 wake_up_interruptible(&port->delta_msr_wait);
714 798
715 if (retval != 0) 799 if ((port->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
716 printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n", 800 if (status & UART_MSR_DCD)
717 mxser_brdname[brd->board_type - 1], ioaddr[b]); 801 wake_up_interruptible(&port->open_wait);
802 schedule_work(&port->tqueue);
803 }
718 804
719 if (retval <= 0) { 805 if (port->flags & ASYNC_CTS_FLOW) {
720 if (retval == MXSER_ERR_IRQ) 806 if (port->tty->hw_stopped) {
721 printk(KERN_ERR "Invalid interrupt number, " 807 if (status & UART_MSR_CTS) {
722 "board not configured\n"); 808 port->tty->hw_stopped = 0;
723 else if (retval == MXSER_ERR_IRQ_CONFLIT)
724 printk(KERN_ERR "Invalid interrupt number, "
725 "board not configured\n");
726 else if (retval == MXSER_ERR_VECTOR)
727 printk(KERN_ERR "Invalid interrupt vector, "
728 "board not configured\n");
729 else if (retval == MXSER_ERR_IOADDR)
730 printk(KERN_ERR "Invalid I/O address, "
731 "board not configured\n");
732 809
733 continue; 810 if ((port->type != PORT_16550A) &&
811 (!port->board->chip_flag)) {
812 outb(port->IER & ~UART_IER_THRI,
813 port->ioaddr + UART_IER);
814 port->IER |= UART_IER_THRI;
815 outb(port->IER, port->ioaddr +
816 UART_IER);
817 }
818 set_bit(MXSER_EVENT_TXLOW, &port->event);
819 schedule_work(&port->tqueue);
820 }
821 } else {
822 if (!(status & UART_MSR_CTS)) {
823 port->tty->hw_stopped = 1;
824 if (port->type != PORT_16550A &&
825 !port->board->chip_flag) {
826 port->IER &= ~UART_IER_THRI;
827 outb(port->IER, port->ioaddr +
828 UART_IER);
829 }
830 }
734 } 831 }
832 }
833}
735 834
736 brd->pdev = NULL; 835static int mxser_startup(struct mxser_port *info)
836{
837 unsigned long page;
838 unsigned long flags;
737 839
738 /* mxser_initbrd will hook ISR. */ 840 page = __get_free_page(GFP_KERNEL);
739 if (mxser_initbrd(brd) < 0) 841 if (!page)
740 continue; 842 return -ENOMEM;
741 843
742 m++; 844 spin_lock_irqsave(&info->slock, flags);
743 }
744 845
745 /* Start finding ISA boards from module arg */ 846 if (info->flags & ASYNC_INITIALIZED) {
746 for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) { 847 free_page(page);
747 unsigned long cap; 848 spin_unlock_irqrestore(&info->slock, flags);
849 return 0;
850 }
748 851
749 if (!(cap = ioaddr[b])) 852 if (!info->ioaddr || !info->type) {
750 continue; 853 if (info->tty)
854 set_bit(TTY_IO_ERROR, &info->tty->flags);
855 free_page(page);
856 spin_unlock_irqrestore(&info->slock, flags);
857 return 0;
858 }
859 if (info->xmit_buf)
860 free_page(page);
861 else
862 info->xmit_buf = (unsigned char *) page;
751 863
752 brd = &mxser_boards[m]; 864 /*
753 retval = mxser_get_ISA_conf(cap, &mxser_boards[m]); 865 * Clear the FIFO buffers and disable them
866 * (they will be reenabled in mxser_change_speed())
867 */
868 if (info->board->chip_flag)
869 outb((UART_FCR_CLEAR_RCVR |
870 UART_FCR_CLEAR_XMIT |
871 MOXA_MUST_FCR_GDA_MODE_ENABLE), info->ioaddr + UART_FCR);
872 else
873 outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT),
874 info->ioaddr + UART_FCR);
754 875
755 if (retval != 0) 876 /*
756 printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n", 877 * At this point there's no way the LSR could still be 0xFF;
757 mxser_brdname[brd->board_type - 1], ioaddr[b]); 878 * if it is, then bail out, because there's likely no UART
879 * here.
880 */
881 if (inb(info->ioaddr + UART_LSR) == 0xff) {
882 spin_unlock_irqrestore(&info->slock, flags);
883 if (capable(CAP_SYS_ADMIN)) {
884 if (info->tty)
885 set_bit(TTY_IO_ERROR, &info->tty->flags);
886 return 0;
887 } else
888 return -ENODEV;
889 }
758 890
759 if (retval <= 0) { 891 /*
760 if (retval == MXSER_ERR_IRQ) 892 * Clear the interrupt registers.
761 printk(KERN_ERR "Invalid interrupt number, " 893 */
762 "board not configured\n"); 894 (void) inb(info->ioaddr + UART_LSR);
763 else if (retval == MXSER_ERR_IRQ_CONFLIT) 895 (void) inb(info->ioaddr + UART_RX);
764 printk(KERN_ERR "Invalid interrupt number, " 896 (void) inb(info->ioaddr + UART_IIR);
765 "board not configured\n"); 897 (void) inb(info->ioaddr + UART_MSR);
766 else if (retval == MXSER_ERR_VECTOR)
767 printk(KERN_ERR "Invalid interrupt vector, "
768 "board not configured\n");
769 else if (retval == MXSER_ERR_IOADDR)
770 printk(KERN_ERR "Invalid I/O address, "
771 "board not configured\n");
772 898
773 continue; 899 /*
774 } 900 * Now, initialize the UART
901 */
902 outb(UART_LCR_WLEN8, info->ioaddr + UART_LCR); /* reset DLAB */
903 info->MCR = UART_MCR_DTR | UART_MCR_RTS;
904 outb(info->MCR, info->ioaddr + UART_MCR);
775 905
776 brd->pdev = NULL; 906 /*
777 /* mxser_initbrd will hook ISR. */ 907 * Finally, enable interrupts
778 if (mxser_initbrd(brd) < 0) 908 */
779 continue; 909 info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI;
910 /* info->IER = UART_IER_RLSI | UART_IER_RDI; */
780 911
781 m++; 912 /* following add by Victor Yu. 08-30-2002 */
782 } 913 if (info->board->chip_flag)
914 info->IER |= MOXA_MUST_IER_EGDAI;
915 /* above add by Victor Yu. 08-30-2002 */
916 outb(info->IER, info->ioaddr + UART_IER); /* enable interrupts */
783 917
784 /* start finding PCI board here */ 918 /*
785 n = ARRAY_SIZE(mxser_pcibrds) - 1; 919 * And clear the interrupt registers again for luck.
786 b = 0; 920 */
787 while (b < n) { 921 (void) inb(info->ioaddr + UART_LSR);
788 pdev = pci_get_device(mxser_pcibrds[b].vendor, 922 (void) inb(info->ioaddr + UART_RX);
789 mxser_pcibrds[b].device, pdev); 923 (void) inb(info->ioaddr + UART_IIR);
790 if (pdev == NULL) { 924 (void) inb(info->ioaddr + UART_MSR);
791 b++;
792 continue;
793 }
794 printk(KERN_INFO "Found MOXA %s board(BusNo=%d,DevNo=%d)\n",
795 mxser_brdname[(int) (mxser_pcibrds[b].driver_data) - 1],
796 pdev->bus->number, PCI_SLOT(pdev->devfn));
797 if (m >= MXSER_BOARDS)
798 printk(KERN_ERR
799 "Too many Smartio/Industio family boards find "
800 "(maximum %d), board not configured\n",
801 MXSER_BOARDS);
802 else {
803 if (pci_enable_device(pdev)) {
804 printk(KERN_ERR "Moxa SmartI/O PCI enable "
805 "fail !\n");
806 continue;
807 }
808 brd = &mxser_boards[m];
809 brd->pdev = pdev;
810 retval = mxser_get_PCI_conf(
811 (int)mxser_pcibrds[b].driver_data,
812 brd, pdev);
813 if (retval < 0) {
814 if (retval == MXSER_ERR_IRQ)
815 printk(KERN_ERR
816 "Invalid interrupt number, "
817 "board not configured\n");
818 else if (retval == MXSER_ERR_IRQ_CONFLIT)
819 printk(KERN_ERR
820 "Invalid interrupt number, "
821 "board not configured\n");
822 else if (retval == MXSER_ERR_VECTOR)
823 printk(KERN_ERR
824 "Invalid interrupt vector, "
825 "board not configured\n");
826 else if (retval == MXSER_ERR_IOADDR)
827 printk(KERN_ERR
828 "Invalid I/O address, "
829 "board not configured\n");
830 continue;
831 }
832 /* mxser_initbrd will hook ISR. */
833 if (mxser_initbrd(brd) < 0)
834 continue;
835 m++;
836 /* Keep an extra reference if we succeeded. It will
837 be returned at unload time */
838 pci_dev_get(pdev);
839 }
840 }
841 925
842 retval = tty_register_driver(mxvar_sdriver); 926 if (info->tty)
843 if (retval) { 927 clear_bit(TTY_IO_ERROR, &info->tty->flags);
844 printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family" 928 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
845 " driver !\n");
846 put_tty_driver(mxvar_sdriver);
847 929
848 for (i = 0; i < MXSER_BOARDS; i++) { 930 /*
849 if (mxser_boards[i].board_type == -1) 931 * and set the speed of the serial port
850 continue; 932 */
851 else { 933 spin_unlock_irqrestore(&info->slock, flags);
852 free_irq(mxser_boards[i].irq, &mxser_boards[i]); 934 mxser_change_speed(info, NULL);
853 /* todo: release io, vector */
854 }
855 }
856 return retval;
857 }
858 935
936 info->flags |= ASYNC_INITIALIZED;
859 return 0; 937 return 0;
860} 938}
861 939
862static void mxser_do_softint(void *private_) 940/*
941 * This routine will shutdown a serial port; interrupts maybe disabled, and
942 * DTR is dropped if the hangup on close termio flag is on.
943 */
944static void mxser_shutdown(struct mxser_port *info)
863{ 945{
864 struct mxser_port *info = private_; 946 unsigned long flags;
865 struct tty_struct *tty;
866 947
867 tty = info->tty; 948 if (!(info->flags & ASYNC_INITIALIZED))
949 return;
868 950
869 if (test_and_clear_bit(MXSER_EVENT_TXLOW, &info->event)) 951 spin_lock_irqsave(&info->slock, flags);
870 tty_wakeup(tty);
871 if (test_and_clear_bit(MXSER_EVENT_HANGUP, &info->event))
872 tty_hangup(tty);
873}
874 952
875static unsigned char mxser_get_msr(int baseaddr, int mode, int port) 953 /*
876{ 954 * clear delta_msr_wait queue to avoid mem leaks: we may free the irq
877 unsigned char status = 0; 955 * here so the queue might never be waken up
956 */
957 wake_up_interruptible(&info->delta_msr_wait);
878 958
879 status = inb(baseaddr + UART_MSR); 959 /*
960 * Free the IRQ, if necessary
961 */
962 if (info->xmit_buf) {
963 free_page((unsigned long) info->xmit_buf);
964 info->xmit_buf = NULL;
965 }
880 966
881 mxser_msr[port] &= 0x0F; 967 info->IER = 0;
882 mxser_msr[port] |= status; 968 outb(0x00, info->ioaddr + UART_IER);
883 status = mxser_msr[port];
884 if (mode)
885 mxser_msr[port] = 0;
886 969
887 return status; 970 if (!info->tty || (info->tty->termios->c_cflag & HUPCL))
971 info->MCR &= ~(UART_MCR_DTR | UART_MCR_RTS);
972 outb(info->MCR, info->ioaddr + UART_MCR);
973
974 /* clear Rx/Tx FIFO's */
975 /* following add by Victor Yu. 08-30-2002 */
976 if (info->board->chip_flag)
977 outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT |
978 MOXA_MUST_FCR_GDA_MODE_ENABLE,
979 info->ioaddr + UART_FCR);
980 else
981 /* above add by Victor Yu. 08-30-2002 */
982 outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT,
983 info->ioaddr + UART_FCR);
984
985 /* read data port to reset things */
986 (void) inb(info->ioaddr + UART_RX);
987
988 if (info->tty)
989 set_bit(TTY_IO_ERROR, &info->tty->flags);
990
991 info->flags &= ~ASYNC_INITIALIZED;
992
993 /* following add by Victor Yu. 09-23-2002 */
994 if (info->board->chip_flag)
995 SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->ioaddr);
996 /* above add by Victor Yu. 09-23-2002 */
997
998 spin_unlock_irqrestore(&info->slock, flags);
888} 999}
889 1000
890/* 1001/*
@@ -1200,250 +1311,295 @@ static void mxser_flush_buffer(struct tty_struct *tty)
1200 (tty->ldisc.write_wakeup) (tty); 1311 (tty->ldisc.write_wakeup) (tty);
1201} 1312}
1202 1313
1203static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) 1314/*
1315 * ------------------------------------------------------------
1316 * friends of mxser_ioctl()
1317 * ------------------------------------------------------------
1318 */
1319static int mxser_get_serial_info(struct mxser_port *info,
1320 struct serial_struct __user *retinfo)
1204{ 1321{
1205 struct mxser_port *info = tty->driver_data; 1322 struct serial_struct tmp;
1206 int retval;
1207 struct async_icount cprev, cnow; /* kernel counter temps */
1208 struct serial_icounter_struct __user *p_cuser;
1209 unsigned long templ;
1210 unsigned long flags;
1211 void __user *argp = (void __user *)arg;
1212 1323
1213 if (tty->index == MXSER_PORTS) 1324 if (!retinfo)
1214 return mxser_ioctl_special(cmd, argp); 1325 return -EFAULT;
1326 memset(&tmp, 0, sizeof(tmp));
1327 tmp.type = info->type;
1328 tmp.line = info->tty->index;
1329 tmp.port = info->ioaddr;
1330 tmp.irq = info->board->irq;
1331 tmp.flags = info->flags;
1332 tmp.baud_base = info->baud_base;
1333 tmp.close_delay = info->close_delay;
1334 tmp.closing_wait = info->closing_wait;
1335 tmp.custom_divisor = info->custom_divisor;
1336 tmp.hub6 = 0;
1337 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1338 return -EFAULT;
1339 return 0;
1340}
1215 1341
1216 /* following add by Victor Yu. 01-05-2004 */ 1342static int mxser_set_serial_info(struct mxser_port *info,
1217 if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) { 1343 struct serial_struct __user *new_info)
1218 int p; 1344{
1219 unsigned long opmode; 1345 struct serial_struct new_serial;
1220 static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f }; 1346 unsigned int flags;
1221 int shiftbit; 1347 int retval = 0;
1222 unsigned char val, mask;
1223 1348
1224 p = tty->index % 4; 1349 if (!new_info || !info->ioaddr)
1225 if (cmd == MOXA_SET_OP_MODE) { 1350 return -EFAULT;
1226 if (get_user(opmode, (int __user *) argp)) 1351 if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
1227 return -EFAULT; 1352 return -EFAULT;
1228 if (opmode != RS232_MODE &&
1229 opmode != RS485_2WIRE_MODE &&
1230 opmode != RS422_MODE &&
1231 opmode != RS485_4WIRE_MODE)
1232 return -EFAULT;
1233 mask = ModeMask[p];
1234 shiftbit = p * 2;
1235 val = inb(info->opmode_ioaddr);
1236 val &= mask;
1237 val |= (opmode << shiftbit);
1238 outb(val, info->opmode_ioaddr);
1239 } else {
1240 shiftbit = p * 2;
1241 opmode = inb(info->opmode_ioaddr) >> shiftbit;
1242 opmode &= OP_MODE_MASK;
1243 if (copy_to_user(argp, &opmode, sizeof(int)))
1244 return -EFAULT;
1245 }
1246 return 0;
1247 }
1248 /* above add by Victor Yu. 01-05-2004 */
1249 1353
1250 if ((cmd != TIOCGSERIAL) && (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { 1354 if ((new_serial.irq != info->board->irq) ||
1251 if (tty->flags & (1 << TTY_IO_ERROR)) 1355 (new_serial.port != info->ioaddr) ||
1252 return -EIO; 1356 (new_serial.custom_divisor != info->custom_divisor) ||
1253 } 1357 (new_serial.baud_base != info->baud_base))
1254 switch (cmd) { 1358 return -EPERM;
1255 case TCSBRK: /* SVID version: non-zero arg --> no break */
1256 retval = tty_check_change(tty);
1257 if (retval)
1258 return retval;
1259 tty_wait_until_sent(tty, 0);
1260 if (!arg)
1261 mxser_send_break(info, HZ / 4); /* 1/4 second */
1262 return 0;
1263 case TCSBRKP: /* support for POSIX tcsendbreak() */
1264 retval = tty_check_change(tty);
1265 if (retval)
1266 return retval;
1267 tty_wait_until_sent(tty, 0);
1268 mxser_send_break(info, arg ? arg * (HZ / 10) : HZ / 4);
1269 return 0;
1270 case TIOCGSOFTCAR:
1271 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp);
1272 case TIOCSSOFTCAR:
1273 if (get_user(templ, (unsigned long __user *) argp))
1274 return -EFAULT;
1275 arg = templ;
1276 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0));
1277 return 0;
1278 case TIOCGSERIAL:
1279 return mxser_get_serial_info(info, argp);
1280 case TIOCSSERIAL:
1281 return mxser_set_serial_info(info, argp);
1282 case TIOCSERGETLSR: /* Get line status register */
1283 return mxser_get_lsr_info(info, argp);
1284 /*
1285 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
1286 * - mask passed in arg for lines of interest
1287 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
1288 * Caller should use TIOCGICOUNT to see which one it was
1289 */
1290 case TIOCMIWAIT: {
1291 DECLARE_WAITQUEUE(wait, current);
1292 int ret;
1293 spin_lock_irqsave(&info->slock, flags);
1294 cprev = info->icount; /* note the counters on entry */
1295 spin_unlock_irqrestore(&info->slock, flags);
1296 1359
1297 add_wait_queue(&info->delta_msr_wait, &wait); 1360 flags = info->flags & ASYNC_SPD_MASK;
1298 while (1) { 1361
1299 spin_lock_irqsave(&info->slock, flags); 1362 if (!capable(CAP_SYS_ADMIN)) {
1300 cnow = info->icount; /* atomic copy */ 1363 if ((new_serial.baud_base != info->baud_base) ||
1301 spin_unlock_irqrestore(&info->slock, flags); 1364 (new_serial.close_delay != info->close_delay) ||
1302 1365 ((new_serial.flags & ~ASYNC_USR_MASK) != (info->flags & ~ASYNC_USR_MASK)))
1303 set_current_state(TASK_INTERRUPTIBLE); 1366 return -EPERM;
1304 if (((arg & TIOCM_RNG) && 1367 info->flags = ((info->flags & ~ASYNC_USR_MASK) |
1305 (cnow.rng != cprev.rng)) || 1368 (new_serial.flags & ASYNC_USR_MASK));
1306 ((arg & TIOCM_DSR) && 1369 } else {
1307 (cnow.dsr != cprev.dsr)) ||
1308 ((arg & TIOCM_CD) &&
1309 (cnow.dcd != cprev.dcd)) ||
1310 ((arg & TIOCM_CTS) &&
1311 (cnow.cts != cprev.cts))) {
1312 ret = 0;
1313 break;
1314 }
1315 /* see if a signal did it */
1316 if (signal_pending(current)) {
1317 ret = -ERESTARTSYS;
1318 break;
1319 }
1320 cprev = cnow;
1321 }
1322 current->state = TASK_RUNNING;
1323 remove_wait_queue(&info->delta_msr_wait, &wait);
1324 break;
1325 }
1326 /* NOTREACHED */
1327 /* 1370 /*
1328 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) 1371 * OK, past this point, all the error checking has been done.
1329 * Return: write counters to the user passed counter struct 1372 * At this point, we start making changes.....
1330 * NB: both 1->0 and 0->1 transitions are counted except for
1331 * RI where only 0->1 is counted.
1332 */ 1373 */
1333 case TIOCGICOUNT: 1374 info->flags = ((info->flags & ~ASYNC_FLAGS) |
1334 spin_lock_irqsave(&info->slock, flags); 1375 (new_serial.flags & ASYNC_FLAGS));
1335 cnow = info->icount; 1376 info->close_delay = new_serial.close_delay * HZ / 100;
1336 spin_unlock_irqrestore(&info->slock, flags); 1377 info->closing_wait = new_serial.closing_wait * HZ / 100;
1337 p_cuser = argp; 1378 info->tty->low_latency =
1338 /* modified by casper 1/11/2000 */ 1379 (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1339 if (put_user(cnow.frame, &p_cuser->frame)) 1380 info->tty->low_latency = 0; /* (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; */
1340 return -EFAULT; 1381 }
1341 if (put_user(cnow.brk, &p_cuser->brk))
1342 return -EFAULT;
1343 if (put_user(cnow.overrun, &p_cuser->overrun))
1344 return -EFAULT;
1345 if (put_user(cnow.buf_overrun, &p_cuser->buf_overrun))
1346 return -EFAULT;
1347 if (put_user(cnow.parity, &p_cuser->parity))
1348 return -EFAULT;
1349 if (put_user(cnow.rx, &p_cuser->rx))
1350 return -EFAULT;
1351 if (put_user(cnow.tx, &p_cuser->tx))
1352 return -EFAULT;
1353 put_user(cnow.cts, &p_cuser->cts);
1354 put_user(cnow.dsr, &p_cuser->dsr);
1355 put_user(cnow.rng, &p_cuser->rng);
1356 put_user(cnow.dcd, &p_cuser->dcd);
1357 return 0;
1358 case MOXA_HighSpeedOn:
1359 return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp);
1360 case MOXA_SDS_RSTICOUNTER: {
1361 info->mon_data.rxcnt = 0;
1362 info->mon_data.txcnt = 0;
1363 return 0;
1364 }
1365/* (above) added by James. */
1366 case MOXA_ASPP_SETBAUD:{
1367 long baud;
1368 if (get_user(baud, (long __user *)argp))
1369 return -EFAULT;
1370 mxser_set_baud(info, baud);
1371 return 0;
1372 }
1373 case MOXA_ASPP_GETBAUD:
1374 if (copy_to_user(argp, &info->realbaud, sizeof(long)))
1375 return -EFAULT;
1376 1382
1377 return 0; 1383 /* added by casper, 3/17/2000, for mouse */
1384 info->type = new_serial.type;
1378 1385
1379 case MOXA_ASPP_OQUEUE:{ 1386 process_txrx_fifo(info);
1380 int len, lsr;
1381 1387
1382 len = mxser_chars_in_buffer(tty); 1388 if (info->flags & ASYNC_INITIALIZED) {
1389 if (flags != (info->flags & ASYNC_SPD_MASK))
1390 mxser_change_speed(info, NULL);
1391 } else
1392 retval = mxser_startup(info);
1383 1393
1384 lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT; 1394 return retval;
1395}
1385 1396
1386 len += (lsr ? 0 : 1); 1397/*
1398 * mxser_get_lsr_info - get line status register info
1399 *
1400 * Purpose: Let user call ioctl() to get info when the UART physically
1401 * is emptied. On bus types like RS485, the transmitter must
1402 * release the bus after transmitting. This must be done when
1403 * the transmit shift register is empty, not be done when the
1404 * transmit holding register is empty. This functionality
1405 * allows an RS485 driver to be written in user space.
1406 */
1407static int mxser_get_lsr_info(struct mxser_port *info,
1408 unsigned int __user *value)
1409{
1410 unsigned char status;
1411 unsigned int result;
1412 unsigned long flags;
1387 1413
1388 if (copy_to_user(argp, &len, sizeof(int))) 1414 spin_lock_irqsave(&info->slock, flags);
1389 return -EFAULT; 1415 status = inb(info->ioaddr + UART_LSR);
1416 spin_unlock_irqrestore(&info->slock, flags);
1417 result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
1418 return put_user(result, value);
1419}
1390 1420
1391 return 0; 1421/*
1392 } 1422 * This routine sends a break character out the serial port.
1393 case MOXA_ASPP_MON: { 1423 */
1394 int mcr, status; 1424static void mxser_send_break(struct mxser_port *info, int duration)
1425{
1426 unsigned long flags;
1395 1427
1396 /* info->mon_data.ser_param = tty->termios->c_cflag; */ 1428 if (!info->ioaddr)
1429 return;
1430 set_current_state(TASK_INTERRUPTIBLE);
1431 spin_lock_irqsave(&info->slock, flags);
1432 outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC,
1433 info->ioaddr + UART_LCR);
1434 spin_unlock_irqrestore(&info->slock, flags);
1435 schedule_timeout(duration);
1436 spin_lock_irqsave(&info->slock, flags);
1437 outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC,
1438 info->ioaddr + UART_LCR);
1439 spin_unlock_irqrestore(&info->slock, flags);
1440}
1397 1441
1398 status = mxser_get_msr(info->ioaddr, 1, tty->index); 1442static int mxser_tiocmget(struct tty_struct *tty, struct file *file)
1399 mxser_check_modem_status(info, status); 1443{
1444 struct mxser_port *info = tty->driver_data;
1445 unsigned char control, status;
1446 unsigned long flags;
1400 1447
1401 mcr = inb(info->ioaddr + UART_MCR);
1402 if (mcr & MOXA_MUST_MCR_XON_FLAG)
1403 info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD;
1404 else
1405 info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFHOLD;
1406 1448
1407 if (mcr & MOXA_MUST_MCR_TX_XON) 1449 if (tty->index == MXSER_PORTS)
1408 info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFXENT; 1450 return -ENOIOCTLCMD;
1409 else 1451 if (tty->flags & (1 << TTY_IO_ERROR))
1410 info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFXENT; 1452 return -EIO;
1411 1453
1412 if (info->tty->hw_stopped) 1454 control = info->MCR;
1413 info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD;
1414 else
1415 info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD;
1416 1455
1417 if (copy_to_user(argp, &info->mon_data, 1456 spin_lock_irqsave(&info->slock, flags);
1418 sizeof(struct mxser_mon))) 1457 status = inb(info->ioaddr + UART_MSR);
1419 return -EFAULT; 1458 if (status & UART_MSR_ANY_DELTA)
1459 mxser_check_modem_status(info, status);
1460 spin_unlock_irqrestore(&info->slock, flags);
1461 return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) |
1462 ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) |
1463 ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) |
1464 ((status & UART_MSR_RI) ? TIOCM_RNG : 0) |
1465 ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) |
1466 ((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
1467}
1420 1468
1421 return 0; 1469static int mxser_tiocmset(struct tty_struct *tty, struct file *file,
1422 } 1470 unsigned int set, unsigned int clear)
1471{
1472 struct mxser_port *info = tty->driver_data;
1473 unsigned long flags;
1423 1474
1424 case MOXA_ASPP_LSTATUS: {
1425 if (copy_to_user(argp, &info->err_shadow,
1426 sizeof(unsigned char)))
1427 return -EFAULT;
1428 1475
1429 info->err_shadow = 0; 1476 if (tty->index == MXSER_PORTS)
1430 return 0; 1477 return -ENOIOCTLCMD;
1431 } 1478 if (tty->flags & (1 << TTY_IO_ERROR))
1432 case MOXA_SET_BAUD_METHOD: { 1479 return -EIO;
1433 int method;
1434 1480
1435 if (get_user(method, (int __user *)argp)) 1481 spin_lock_irqsave(&info->slock, flags);
1436 return -EFAULT;
1437 mxser_set_baud_method[tty->index] = method;
1438 if (copy_to_user(argp, &method, sizeof(int)))
1439 return -EFAULT;
1440 1482
1441 return 0; 1483 if (set & TIOCM_RTS)
1484 info->MCR |= UART_MCR_RTS;
1485 if (set & TIOCM_DTR)
1486 info->MCR |= UART_MCR_DTR;
1487
1488 if (clear & TIOCM_RTS)
1489 info->MCR &= ~UART_MCR_RTS;
1490 if (clear & TIOCM_DTR)
1491 info->MCR &= ~UART_MCR_DTR;
1492
1493 outb(info->MCR, info->ioaddr + UART_MCR);
1494 spin_unlock_irqrestore(&info->slock, flags);
1495 return 0;
1496}
1497
1498static int mxser_program_mode(int port)
1499{
1500 int id, i, j, n;
1501 /* unsigned long flags; */
1502
1503 spin_lock(&gm_lock);
1504 outb(0, port);
1505 outb(0, port);
1506 outb(0, port);
1507 (void)inb(port);
1508 (void)inb(port);
1509 outb(0, port);
1510 (void)inb(port);
1511 /* restore_flags(flags); */
1512 spin_unlock(&gm_lock);
1513
1514 id = inb(port + 1) & 0x1F;
1515 if ((id != C168_ASIC_ID) &&
1516 (id != C104_ASIC_ID) &&
1517 (id != C102_ASIC_ID) &&
1518 (id != CI132_ASIC_ID) &&
1519 (id != CI134_ASIC_ID) &&
1520 (id != CI104J_ASIC_ID))
1521 return -1;
1522 for (i = 0, j = 0; i < 4; i++) {
1523 n = inb(port + 2);
1524 if (n == 'M') {
1525 j = 1;
1526 } else if ((j == 1) && (n == 1)) {
1527 j = 2;
1528 break;
1529 } else
1530 j = 0;
1531 }
1532 if (j != 2)
1533 id = -2;
1534 return id;
1535}
1536
1537static void mxser_normal_mode(int port)
1538{
1539 int i, n;
1540
1541 outb(0xA5, port + 1);
1542 outb(0x80, port + 3);
1543 outb(12, port + 0); /* 9600 bps */
1544 outb(0, port + 1);
1545 outb(0x03, port + 3); /* 8 data bits */
1546 outb(0x13, port + 4); /* loop back mode */
1547 for (i = 0; i < 16; i++) {
1548 n = inb(port + 5);
1549 if ((n & 0x61) == 0x60)
1550 break;
1551 if ((n & 1) == 1)
1552 (void)inb(port);
1553 }
1554 outb(0x00, port + 4);
1555}
1556
1557#define CHIP_SK 0x01 /* Serial Data Clock in Eprom */
1558#define CHIP_DO 0x02 /* Serial Data Output in Eprom */
1559#define CHIP_CS 0x04 /* Serial Chip Select in Eprom */
1560#define CHIP_DI 0x08 /* Serial Data Input in Eprom */
1561#define EN_CCMD 0x000 /* Chip's command register */
1562#define EN0_RSARLO 0x008 /* Remote start address reg 0 */
1563#define EN0_RSARHI 0x009 /* Remote start address reg 1 */
1564#define EN0_RCNTLO 0x00A /* Remote byte count reg WR */
1565#define EN0_RCNTHI 0x00B /* Remote byte count reg WR */
1566#define EN0_DCFG 0x00E /* Data configuration reg WR */
1567#define EN0_PORT 0x010 /* Rcv missed frame error counter RD */
1568#define ENC_PAGE0 0x000 /* Select page 0 of chip registers */
1569#define ENC_PAGE3 0x0C0 /* Select page 3 of chip registers */
1570static int mxser_read_register(int port, unsigned short *regs)
1571{
1572 int i, k, value, id;
1573 unsigned int j;
1574
1575 id = mxser_program_mode(port);
1576 if (id < 0)
1577 return id;
1578 for (i = 0; i < 14; i++) {
1579 k = (i & 0x3F) | 0x180;
1580 for (j = 0x100; j > 0; j >>= 1) {
1581 outb(CHIP_CS, port);
1582 if (k & j) {
1583 outb(CHIP_CS | CHIP_DO, port);
1584 outb(CHIP_CS | CHIP_DO | CHIP_SK, port); /* A? bit of read */
1585 } else {
1586 outb(CHIP_CS, port);
1587 outb(CHIP_CS | CHIP_SK, port); /* A? bit of read */
1588 }
1442 } 1589 }
1443 default: 1590 (void)inb(port);
1444 return -ENOIOCTLCMD; 1591 value = 0;
1592 for (k = 0, j = 0x8000; k < 16; k++, j >>= 1) {
1593 outb(CHIP_CS, port);
1594 outb(CHIP_CS | CHIP_SK, port);
1595 if (inb(port) & CHIP_DI)
1596 value |= j;
1597 }
1598 regs[i] = value;
1599 outb(0, port);
1445 } 1600 }
1446 return 0; 1601 mxser_normal_mode(port);
1602 return id;
1447} 1603}
1448 1604
1449#ifndef CMSPAR 1605#ifndef CMSPAR
@@ -1609,6 +1765,251 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
1609 return 0; 1765 return 0;
1610} 1766}
1611 1767
1768static int mxser_ioctl(struct tty_struct *tty, struct file *file,
1769 unsigned int cmd, unsigned long arg)
1770{
1771 struct mxser_port *info = tty->driver_data;
1772 struct async_icount cprev, cnow; /* kernel counter temps */
1773 struct serial_icounter_struct __user *p_cuser;
1774 unsigned long templ;
1775 unsigned long flags;
1776 void __user *argp = (void __user *)arg;
1777 int retval;
1778
1779 if (tty->index == MXSER_PORTS)
1780 return mxser_ioctl_special(cmd, argp);
1781
1782 /* following add by Victor Yu. 01-05-2004 */
1783 if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) {
1784 int p;
1785 unsigned long opmode;
1786 static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f };
1787 int shiftbit;
1788 unsigned char val, mask;
1789
1790 p = tty->index % 4;
1791 if (cmd == MOXA_SET_OP_MODE) {
1792 if (get_user(opmode, (int __user *) argp))
1793 return -EFAULT;
1794 if (opmode != RS232_MODE &&
1795 opmode != RS485_2WIRE_MODE &&
1796 opmode != RS422_MODE &&
1797 opmode != RS485_4WIRE_MODE)
1798 return -EFAULT;
1799 mask = ModeMask[p];
1800 shiftbit = p * 2;
1801 val = inb(info->opmode_ioaddr);
1802 val &= mask;
1803 val |= (opmode << shiftbit);
1804 outb(val, info->opmode_ioaddr);
1805 } else {
1806 shiftbit = p * 2;
1807 opmode = inb(info->opmode_ioaddr) >> shiftbit;
1808 opmode &= OP_MODE_MASK;
1809 if (copy_to_user(argp, &opmode, sizeof(int)))
1810 return -EFAULT;
1811 }
1812 return 0;
1813 }
1814 /* above add by Victor Yu. 01-05-2004 */
1815
1816 if ((cmd != TIOCGSERIAL) && (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
1817 if (tty->flags & (1 << TTY_IO_ERROR))
1818 return -EIO;
1819 }
1820 switch (cmd) {
1821 case TCSBRK: /* SVID version: non-zero arg --> no break */
1822 retval = tty_check_change(tty);
1823 if (retval)
1824 return retval;
1825 tty_wait_until_sent(tty, 0);
1826 if (!arg)
1827 mxser_send_break(info, HZ / 4); /* 1/4 second */
1828 return 0;
1829 case TCSBRKP: /* support for POSIX tcsendbreak() */
1830 retval = tty_check_change(tty);
1831 if (retval)
1832 return retval;
1833 tty_wait_until_sent(tty, 0);
1834 mxser_send_break(info, arg ? arg * (HZ / 10) : HZ / 4);
1835 return 0;
1836 case TIOCGSOFTCAR:
1837 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp);
1838 case TIOCSSOFTCAR:
1839 if (get_user(templ, (unsigned long __user *) argp))
1840 return -EFAULT;
1841 arg = templ;
1842 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0));
1843 return 0;
1844 case TIOCGSERIAL:
1845 return mxser_get_serial_info(info, argp);
1846 case TIOCSSERIAL:
1847 return mxser_set_serial_info(info, argp);
1848 case TIOCSERGETLSR: /* Get line status register */
1849 return mxser_get_lsr_info(info, argp);
1850 /*
1851 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
1852 * - mask passed in arg for lines of interest
1853 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
1854 * Caller should use TIOCGICOUNT to see which one it was
1855 */
1856 case TIOCMIWAIT: {
1857 DECLARE_WAITQUEUE(wait, current);
1858 int ret;
1859 spin_lock_irqsave(&info->slock, flags);
1860 cprev = info->icount; /* note the counters on entry */
1861 spin_unlock_irqrestore(&info->slock, flags);
1862
1863 add_wait_queue(&info->delta_msr_wait, &wait);
1864 while (1) {
1865 spin_lock_irqsave(&info->slock, flags);
1866 cnow = info->icount; /* atomic copy */
1867 spin_unlock_irqrestore(&info->slock, flags);
1868
1869 set_current_state(TASK_INTERRUPTIBLE);
1870 if (((arg & TIOCM_RNG) &&
1871 (cnow.rng != cprev.rng)) ||
1872 ((arg & TIOCM_DSR) &&
1873 (cnow.dsr != cprev.dsr)) ||
1874 ((arg & TIOCM_CD) &&
1875 (cnow.dcd != cprev.dcd)) ||
1876 ((arg & TIOCM_CTS) &&
1877 (cnow.cts != cprev.cts))) {
1878 ret = 0;
1879 break;
1880 }
1881 /* see if a signal did it */
1882 if (signal_pending(current)) {
1883 ret = -ERESTARTSYS;
1884 break;
1885 }
1886 cprev = cnow;
1887 }
1888 current->state = TASK_RUNNING;
1889 remove_wait_queue(&info->delta_msr_wait, &wait);
1890 break;
1891 }
1892 /* NOTREACHED */
1893 /*
1894 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
1895 * Return: write counters to the user passed counter struct
1896 * NB: both 1->0 and 0->1 transitions are counted except for
1897 * RI where only 0->1 is counted.
1898 */
1899 case TIOCGICOUNT:
1900 spin_lock_irqsave(&info->slock, flags);
1901 cnow = info->icount;
1902 spin_unlock_irqrestore(&info->slock, flags);
1903 p_cuser = argp;
1904 /* modified by casper 1/11/2000 */
1905 if (put_user(cnow.frame, &p_cuser->frame))
1906 return -EFAULT;
1907 if (put_user(cnow.brk, &p_cuser->brk))
1908 return -EFAULT;
1909 if (put_user(cnow.overrun, &p_cuser->overrun))
1910 return -EFAULT;
1911 if (put_user(cnow.buf_overrun, &p_cuser->buf_overrun))
1912 return -EFAULT;
1913 if (put_user(cnow.parity, &p_cuser->parity))
1914 return -EFAULT;
1915 if (put_user(cnow.rx, &p_cuser->rx))
1916 return -EFAULT;
1917 if (put_user(cnow.tx, &p_cuser->tx))
1918 return -EFAULT;
1919 put_user(cnow.cts, &p_cuser->cts);
1920 put_user(cnow.dsr, &p_cuser->dsr);
1921 put_user(cnow.rng, &p_cuser->rng);
1922 put_user(cnow.dcd, &p_cuser->dcd);
1923 return 0;
1924 case MOXA_HighSpeedOn:
1925 return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp);
1926 case MOXA_SDS_RSTICOUNTER:
1927 info->mon_data.rxcnt = 0;
1928 info->mon_data.txcnt = 0;
1929 return 0;
1930/* (above) added by James. */
1931 case MOXA_ASPP_SETBAUD:{
1932 long baud;
1933 if (get_user(baud, (long __user *)argp))
1934 return -EFAULT;
1935 mxser_set_baud(info, baud);
1936 return 0;
1937 }
1938 case MOXA_ASPP_GETBAUD:
1939 if (copy_to_user(argp, &info->realbaud, sizeof(long)))
1940 return -EFAULT;
1941
1942 return 0;
1943
1944 case MOXA_ASPP_OQUEUE:{
1945 int len, lsr;
1946
1947 len = mxser_chars_in_buffer(tty);
1948
1949 lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT;
1950
1951 len += (lsr ? 0 : 1);
1952
1953 if (copy_to_user(argp, &len, sizeof(int)))
1954 return -EFAULT;
1955
1956 return 0;
1957 }
1958 case MOXA_ASPP_MON: {
1959 int mcr, status;
1960
1961 /* info->mon_data.ser_param = tty->termios->c_cflag; */
1962
1963 status = mxser_get_msr(info->ioaddr, 1, tty->index);
1964 mxser_check_modem_status(info, status);
1965
1966 mcr = inb(info->ioaddr + UART_MCR);
1967 if (mcr & MOXA_MUST_MCR_XON_FLAG)
1968 info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD;
1969 else
1970 info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFHOLD;
1971
1972 if (mcr & MOXA_MUST_MCR_TX_XON)
1973 info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFXENT;
1974 else
1975 info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFXENT;
1976
1977 if (info->tty->hw_stopped)
1978 info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD;
1979 else
1980 info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD;
1981
1982 if (copy_to_user(argp, &info->mon_data,
1983 sizeof(struct mxser_mon)))
1984 return -EFAULT;
1985
1986 return 0;
1987 }
1988 case MOXA_ASPP_LSTATUS: {
1989 if (copy_to_user(argp, &info->err_shadow,
1990 sizeof(unsigned char)))
1991 return -EFAULT;
1992
1993 info->err_shadow = 0;
1994 return 0;
1995 }
1996 case MOXA_SET_BAUD_METHOD: {
1997 int method;
1998
1999 if (get_user(method, (int __user *)argp))
2000 return -EFAULT;
2001 mxser_set_baud_method[tty->index] = method;
2002 if (copy_to_user(argp, &method, sizeof(int)))
2003 return -EFAULT;
2004
2005 return 0;
2006 }
2007 default:
2008 return -ENOIOCTLCMD;
2009 }
2010 return 0;
2011}
2012
1612static void mxser_stoprx(struct tty_struct *tty) 2013static void mxser_stoprx(struct tty_struct *tty)
1613{ 2014{
1614 struct mxser_port *info = tty->driver_data; 2015 struct mxser_port *info = tty->driver_data;
@@ -1633,10 +2034,20 @@ static void mxser_stoprx(struct tty_struct *tty)
1633 } 2034 }
1634} 2035}
1635 2036
1636static void mxser_startrx(struct tty_struct *tty) 2037/*
2038 * This routine is called by the upper-layer tty layer to signal that
2039 * incoming characters should be throttled.
2040 */
2041static void mxser_throttle(struct tty_struct *tty)
2042{
2043 mxser_stoprx(tty);
2044}
2045
2046static void mxser_unthrottle(struct tty_struct *tty)
1637{ 2047{
1638 struct mxser_port *info = tty->driver_data; 2048 struct mxser_port *info = tty->driver_data;
1639 2049
2050 /* startrx */
1640 info->ldisc_stop_rx = 0; 2051 info->ldisc_stop_rx = 0;
1641 if (I_IXOFF(tty)) { 2052 if (I_IXOFF(tty)) {
1642 if (info->x_char) 2053 if (info->x_char)
@@ -1662,17 +2073,37 @@ static void mxser_startrx(struct tty_struct *tty)
1662} 2073}
1663 2074
1664/* 2075/*
1665 * This routine is called by the upper-layer tty layer to signal that 2076 * mxser_stop() and mxser_start()
1666 * incoming characters should be throttled. 2077 *
2078 * This routines are called before setting or resetting tty->stopped.
2079 * They enable or disable transmitter interrupts, as necessary.
1667 */ 2080 */
1668static void mxser_throttle(struct tty_struct *tty) 2081static void mxser_stop(struct tty_struct *tty)
1669{ 2082{
1670 mxser_stoprx(tty); 2083 struct mxser_port *info = tty->driver_data;
2084 unsigned long flags;
2085
2086 spin_lock_irqsave(&info->slock, flags);
2087 if (info->IER & UART_IER_THRI) {
2088 info->IER &= ~UART_IER_THRI;
2089 outb(info->IER, info->ioaddr + UART_IER);
2090 }
2091 spin_unlock_irqrestore(&info->slock, flags);
1671} 2092}
1672 2093
1673static void mxser_unthrottle(struct tty_struct *tty) 2094static void mxser_start(struct tty_struct *tty)
1674{ 2095{
1675 mxser_startrx(tty); 2096 struct mxser_port *info = tty->driver_data;
2097 unsigned long flags;
2098
2099 spin_lock_irqsave(&info->slock, flags);
2100 if (info->xmit_cnt && info->xmit_buf
2101 /* && !(info->IER & UART_IER_THRI) */) {
2102 outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER);
2103 info->IER |= UART_IER_THRI;
2104 outb(info->IER, info->ioaddr + UART_IER);
2105 }
2106 spin_unlock_irqrestore(&info->slock, flags);
1676} 2107}
1677 2108
1678static void mxser_set_termios(struct tty_struct *tty, struct termios *old_termios) 2109static void mxser_set_termios(struct tty_struct *tty, struct termios *old_termios)
@@ -1710,40 +2141,6 @@ static void mxser_set_termios(struct tty_struct *tty, struct termios *old_termio
1710} 2141}
1711 2142
1712/* 2143/*
1713 * mxser_stop() and mxser_start()
1714 *
1715 * This routines are called before setting or resetting tty->stopped.
1716 * They enable or disable transmitter interrupts, as necessary.
1717 */
1718static void mxser_stop(struct tty_struct *tty)
1719{
1720 struct mxser_port *info = tty->driver_data;
1721 unsigned long flags;
1722
1723 spin_lock_irqsave(&info->slock, flags);
1724 if (info->IER & UART_IER_THRI) {
1725 info->IER &= ~UART_IER_THRI;
1726 outb(info->IER, info->ioaddr + UART_IER);
1727 }
1728 spin_unlock_irqrestore(&info->slock, flags);
1729}
1730
1731static void mxser_start(struct tty_struct *tty)
1732{
1733 struct mxser_port *info = tty->driver_data;
1734 unsigned long flags;
1735
1736 spin_lock_irqsave(&info->slock, flags);
1737 if (info->xmit_cnt && info->xmit_buf
1738 /* && !(info->IER & UART_IER_THRI) */) {
1739 outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER);
1740 info->IER |= UART_IER_THRI;
1741 outb(info->IER, info->ioaddr + UART_IER);
1742 }
1743 spin_unlock_irqrestore(&info->slock, flags);
1744}
1745
1746/*
1747 * mxser_wait_until_sent() --- wait until the transmitter is empty 2144 * mxser_wait_until_sent() --- wait until the transmitter is empty
1748 */ 2145 */
1749static void mxser_wait_until_sent(struct tty_struct *tty, int timeout) 2146static void mxser_wait_until_sent(struct tty_struct *tty, int timeout)
@@ -1845,122 +2242,6 @@ static void mxser_rs_break(struct tty_struct *tty, int break_state)
1845 2242
1846/* (above) added by James. */ 2243/* (above) added by James. */
1847 2244
1848
1849/*
1850 * This is the serial driver's generic interrupt routine
1851 */
1852static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1853{
1854 int status, iir, i;
1855 struct mxser_board *brd = NULL;
1856 struct mxser_port *port;
1857 int max, irqbits, bits, msr;
1858 int pass_counter = 0;
1859 unsigned int int_cnt;
1860 int handled = IRQ_NONE;
1861
1862 /* spin_lock(&gm_lock); */
1863
1864 for (i = 0; i < MXSER_BOARDS; i++)
1865 if (dev_id == &mxser_boards[i]) {
1866 brd = dev_id;
1867 break;
1868 }
1869
1870 if (i == MXSER_BOARDS)
1871 goto irq_stop;
1872 if (brd == NULL)
1873 goto irq_stop;
1874 max = mxser_numports[brd->board_type - 1];
1875 while (1) {
1876 irqbits = inb(brd->vector) & brd->vector_mask;
1877 if (irqbits == brd->vector_mask)
1878 break;
1879
1880 handled = IRQ_HANDLED;
1881 for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) {
1882 if (irqbits == brd->vector_mask)
1883 break;
1884 if (bits & irqbits)
1885 continue;
1886 port = &brd->ports[i];
1887
1888 int_cnt = 0;
1889 do {
1890 /* following add by Victor Yu. 09-13-2002 */
1891 iir = inb(port->ioaddr + UART_IIR);
1892 if (iir & UART_IIR_NO_INT)
1893 break;
1894 iir &= MOXA_MUST_IIR_MASK;
1895 if (!port->tty) {
1896 status = inb(port->ioaddr + UART_LSR);
1897 outb(0x27, port->ioaddr + UART_FCR);
1898 inb(port->ioaddr + UART_MSR);
1899 break;
1900 }
1901 /* above add by Victor Yu. 09-13-2002 */
1902
1903 /* following add by Victor Yu. 09-02-2002 */
1904 status = inb(port->ioaddr + UART_LSR);
1905
1906 if (status & UART_LSR_PE)
1907 port->err_shadow |= NPPI_NOTIFY_PARITY;
1908 if (status & UART_LSR_FE)
1909 port->err_shadow |= NPPI_NOTIFY_FRAMING;
1910 if (status & UART_LSR_OE)
1911 port->err_shadow |=
1912 NPPI_NOTIFY_HW_OVERRUN;
1913 if (status & UART_LSR_BI)
1914 port->err_shadow |= NPPI_NOTIFY_BREAK;
1915
1916 if (port->board->chip_flag) {
1917 /*
1918 if ( (status & 0x02) && !(status & 0x01) ) {
1919 outb(port->ioaddr+UART_FCR, 0x23);
1920 continue;
1921 }
1922 */
1923 if (iir == MOXA_MUST_IIR_GDA ||
1924 iir == MOXA_MUST_IIR_RDA ||
1925 iir == MOXA_MUST_IIR_RTO ||
1926 iir == MOXA_MUST_IIR_LSR)
1927 mxser_receive_chars(port,
1928 &status);
1929
1930 } else {
1931 /* above add by Victor Yu. 09-02-2002 */
1932
1933 status &= port->read_status_mask;
1934 if (status & UART_LSR_DR)
1935 mxser_receive_chars(port,
1936 &status);
1937 }
1938 msr = inb(port->ioaddr + UART_MSR);
1939 if (msr & UART_MSR_ANY_DELTA)
1940 mxser_check_modem_status(port, msr);
1941
1942 /* following add by Victor Yu. 09-13-2002 */
1943 if (port->board->chip_flag) {
1944 if (iir == 0x02 && (status &
1945 UART_LSR_THRE))
1946 mxser_transmit_chars(port);
1947 } else {
1948 /* above add by Victor Yu. 09-13-2002 */
1949
1950 if (status & UART_LSR_THRE)
1951 mxser_transmit_chars(port);
1952 }
1953 } while (int_cnt++ < MXSER_ISR_PASS_LIMIT);
1954 }
1955 if (pass_counter++ > MXSER_ISR_PASS_LIMIT)
1956 break; /* Prevent infinite loops */
1957 }
1958
1959 irq_stop:
1960 /* spin_unlock(&gm_lock); */
1961 return handled;
1962}
1963
1964static void mxser_receive_chars(struct mxser_port *port, int *status) 2245static void mxser_receive_chars(struct mxser_port *port, int *status)
1965{ 2246{
1966 struct tty_struct *tty = port->tty; 2247 struct tty_struct *tty = port->tty;
@@ -2155,744 +2436,202 @@ unlock:
2155 spin_unlock_irqrestore(&port->slock, flags); 2436 spin_unlock_irqrestore(&port->slock, flags);
2156} 2437}
2157 2438
2158static void mxser_check_modem_status(struct mxser_port *port, int status) 2439/*
2440 * This is the serial driver's generic interrupt routine
2441 */
2442static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs)
2159{ 2443{
2160 /* update input line counters */ 2444 int status, iir, i;
2161 if (status & UART_MSR_TERI) 2445 struct mxser_board *brd = NULL;
2162 port->icount.rng++; 2446 struct mxser_port *port;
2163 if (status & UART_MSR_DDSR) 2447 int max, irqbits, bits, msr;
2164 port->icount.dsr++; 2448 int pass_counter = 0;
2165 if (status & UART_MSR_DDCD) 2449 unsigned int int_cnt;
2166 port->icount.dcd++; 2450 int handled = IRQ_NONE;
2167 if (status & UART_MSR_DCTS)
2168 port->icount.cts++;
2169 port->mon_data.modem_status = status;
2170 wake_up_interruptible(&port->delta_msr_wait);
2171
2172 if ((port->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
2173 if (status & UART_MSR_DCD)
2174 wake_up_interruptible(&port->open_wait);
2175 schedule_work(&port->tqueue);
2176 }
2177 2451
2178 if (port->flags & ASYNC_CTS_FLOW) { 2452 /* spin_lock(&gm_lock); */
2179 if (port->tty->hw_stopped) {
2180 if (status & UART_MSR_CTS) {
2181 port->tty->hw_stopped = 0;
2182 2453
2183 if ((port->type != PORT_16550A) && 2454 for (i = 0; i < MXSER_BOARDS; i++)
2184 (!port->board->chip_flag)) { 2455 if (dev_id == &mxser_boards[i]) {
2185 outb(port->IER & ~UART_IER_THRI, 2456 brd = dev_id;
2186 port->ioaddr + UART_IER); 2457 break;
2187 port->IER |= UART_IER_THRI;
2188 outb(port->IER, port->ioaddr +
2189 UART_IER);
2190 }
2191 set_bit(MXSER_EVENT_TXLOW, &port->event);
2192 schedule_work(&port->tqueue);
2193 }
2194 } else {
2195 if (!(status & UART_MSR_CTS)) {
2196 port->tty->hw_stopped = 1;
2197 if (port->type != PORT_16550A &&
2198 !port->board->chip_flag) {
2199 port->IER &= ~UART_IER_THRI;
2200 outb(port->IER, port->ioaddr +
2201 UART_IER);
2202 }
2203 }
2204 } 2458 }
2205 }
2206}
2207
2208static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp, struct mxser_port *port)
2209{
2210 DECLARE_WAITQUEUE(wait, current);
2211 int retval;
2212 int do_clocal = 0;
2213 unsigned long flags;
2214 2459
2215 /* 2460 if (i == MXSER_BOARDS)
2216 * If non-blocking mode is set, or the port is not enabled, 2461 goto irq_stop;
2217 * then make the check up front and then exit. 2462 if (brd == NULL)
2218 */ 2463 goto irq_stop;
2219 if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { 2464 max = mxser_numports[brd->board_type - 1];
2220 port->flags |= ASYNC_NORMAL_ACTIVE;
2221 return 0;
2222 }
2223
2224 if (tty->termios->c_cflag & CLOCAL)
2225 do_clocal = 1;
2226
2227 /*
2228 * Block waiting for the carrier detect and the line to become
2229 * free (i.e., not in use by the callout). While we are in
2230 * this loop, port->count is dropped by one, so that
2231 * mxser_close() knows when to free things. We restore it upon
2232 * exit, either normal or abnormal.
2233 */
2234 retval = 0;
2235 add_wait_queue(&port->open_wait, &wait);
2236
2237 spin_lock_irqsave(&port->slock, flags);
2238 if (!tty_hung_up_p(filp))
2239 port->count--;
2240 spin_unlock_irqrestore(&port->slock, flags);
2241 port->blocked_open++;
2242 while (1) { 2465 while (1) {
2243 spin_lock_irqsave(&port->slock, flags); 2466 irqbits = inb(brd->vector) & brd->vector_mask;
2244 outb(inb(port->ioaddr + UART_MCR) | 2467 if (irqbits == brd->vector_mask)
2245 UART_MCR_DTR | UART_MCR_RTS, port->ioaddr + UART_MCR);
2246 spin_unlock_irqrestore(&port->slock, flags);
2247 set_current_state(TASK_INTERRUPTIBLE);
2248 if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
2249 if (port->flags & ASYNC_HUP_NOTIFY)
2250 retval = -EAGAIN;
2251 else
2252 retval = -ERESTARTSYS;
2253 break;
2254 }
2255 if (!(port->flags & ASYNC_CLOSING) &&
2256 (do_clocal ||
2257 (inb(port->ioaddr + UART_MSR) & UART_MSR_DCD)))
2258 break;
2259 if (signal_pending(current)) {
2260 retval = -ERESTARTSYS;
2261 break; 2468 break;
2262 }
2263 schedule();
2264 }
2265 set_current_state(TASK_RUNNING);
2266 remove_wait_queue(&port->open_wait, &wait);
2267 if (!tty_hung_up_p(filp))
2268 port->count++;
2269 port->blocked_open--;
2270 if (retval)
2271 return retval;
2272 port->flags |= ASYNC_NORMAL_ACTIVE;
2273 return 0;
2274}
2275
2276static int mxser_startup(struct mxser_port *info)
2277{
2278 unsigned long page;
2279 unsigned long flags;
2280
2281 page = __get_free_page(GFP_KERNEL);
2282 if (!page)
2283 return -ENOMEM;
2284
2285 spin_lock_irqsave(&info->slock, flags);
2286
2287 if (info->flags & ASYNC_INITIALIZED) {
2288 free_page(page);
2289 spin_unlock_irqrestore(&info->slock, flags);
2290 return 0;
2291 }
2292 2469
2293 if (!info->ioaddr || !info->type) { 2470 handled = IRQ_HANDLED;
2294 if (info->tty) 2471 for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) {
2295 set_bit(TTY_IO_ERROR, &info->tty->flags); 2472 if (irqbits == brd->vector_mask)
2296 free_page(page);
2297 spin_unlock_irqrestore(&info->slock, flags);
2298 return 0;
2299 }
2300 if (info->xmit_buf)
2301 free_page(page);
2302 else
2303 info->xmit_buf = (unsigned char *) page;
2304
2305 /*
2306 * Clear the FIFO buffers and disable them
2307 * (they will be reenabled in mxser_change_speed())
2308 */
2309 if (info->board->chip_flag)
2310 outb((UART_FCR_CLEAR_RCVR |
2311 UART_FCR_CLEAR_XMIT |
2312 MOXA_MUST_FCR_GDA_MODE_ENABLE), info->ioaddr + UART_FCR);
2313 else
2314 outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT),
2315 info->ioaddr + UART_FCR);
2316
2317 /*
2318 * At this point there's no way the LSR could still be 0xFF;
2319 * if it is, then bail out, because there's likely no UART
2320 * here.
2321 */
2322 if (inb(info->ioaddr + UART_LSR) == 0xff) {
2323 spin_unlock_irqrestore(&info->slock, flags);
2324 if (capable(CAP_SYS_ADMIN)) {
2325 if (info->tty)
2326 set_bit(TTY_IO_ERROR, &info->tty->flags);
2327 return 0;
2328 } else
2329 return -ENODEV;
2330 }
2331
2332 /*
2333 * Clear the interrupt registers.
2334 */
2335 (void) inb(info->ioaddr + UART_LSR);
2336 (void) inb(info->ioaddr + UART_RX);
2337 (void) inb(info->ioaddr + UART_IIR);
2338 (void) inb(info->ioaddr + UART_MSR);
2339
2340 /*
2341 * Now, initialize the UART
2342 */
2343 outb(UART_LCR_WLEN8, info->ioaddr + UART_LCR); /* reset DLAB */
2344 info->MCR = UART_MCR_DTR | UART_MCR_RTS;
2345 outb(info->MCR, info->ioaddr + UART_MCR);
2346
2347 /*
2348 * Finally, enable interrupts
2349 */
2350 info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI;
2351 /* info->IER = UART_IER_RLSI | UART_IER_RDI; */
2352
2353 /* following add by Victor Yu. 08-30-2002 */
2354 if (info->board->chip_flag)
2355 info->IER |= MOXA_MUST_IER_EGDAI;
2356 /* above add by Victor Yu. 08-30-2002 */
2357 outb(info->IER, info->ioaddr + UART_IER); /* enable interrupts */
2358
2359 /*
2360 * And clear the interrupt registers again for luck.
2361 */
2362 (void) inb(info->ioaddr + UART_LSR);
2363 (void) inb(info->ioaddr + UART_RX);
2364 (void) inb(info->ioaddr + UART_IIR);
2365 (void) inb(info->ioaddr + UART_MSR);
2366
2367 if (info->tty)
2368 clear_bit(TTY_IO_ERROR, &info->tty->flags);
2369 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
2370
2371 /*
2372 * and set the speed of the serial port
2373 */
2374 spin_unlock_irqrestore(&info->slock, flags);
2375 mxser_change_speed(info, NULL);
2376
2377 info->flags |= ASYNC_INITIALIZED;
2378 return 0;
2379}
2380
2381/*
2382 * This routine will shutdown a serial port; interrupts maybe disabled, and
2383 * DTR is dropped if the hangup on close termio flag is on.
2384 */
2385static void mxser_shutdown(struct mxser_port *info)
2386{
2387 unsigned long flags;
2388
2389 if (!(info->flags & ASYNC_INITIALIZED))
2390 return;
2391
2392 spin_lock_irqsave(&info->slock, flags);
2393
2394 /*
2395 * clear delta_msr_wait queue to avoid mem leaks: we may free the irq
2396 * here so the queue might never be waken up
2397 */
2398 wake_up_interruptible(&info->delta_msr_wait);
2399
2400 /*
2401 * Free the IRQ, if necessary
2402 */
2403 if (info->xmit_buf) {
2404 free_page((unsigned long) info->xmit_buf);
2405 info->xmit_buf = NULL;
2406 }
2407
2408 info->IER = 0;
2409 outb(0x00, info->ioaddr + UART_IER);
2410
2411 if (!info->tty || (info->tty->termios->c_cflag & HUPCL))
2412 info->MCR &= ~(UART_MCR_DTR | UART_MCR_RTS);
2413 outb(info->MCR, info->ioaddr + UART_MCR);
2414
2415 /* clear Rx/Tx FIFO's */
2416 /* following add by Victor Yu. 08-30-2002 */
2417 if (info->board->chip_flag)
2418 outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT |
2419 MOXA_MUST_FCR_GDA_MODE_ENABLE,
2420 info->ioaddr + UART_FCR);
2421 else
2422 /* above add by Victor Yu. 08-30-2002 */
2423 outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT,
2424 info->ioaddr + UART_FCR);
2425
2426 /* read data port to reset things */
2427 (void) inb(info->ioaddr + UART_RX);
2428
2429 if (info->tty)
2430 set_bit(TTY_IO_ERROR, &info->tty->flags);
2431
2432 info->flags &= ~ASYNC_INITIALIZED;
2433
2434 /* following add by Victor Yu. 09-23-2002 */
2435 if (info->board->chip_flag)
2436 SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->ioaddr);
2437 /* above add by Victor Yu. 09-23-2002 */
2438
2439 spin_unlock_irqrestore(&info->slock, flags);
2440}
2441
2442/*
2443 * This routine is called to set the UART divisor registers to match
2444 * the specified baud rate for a serial port.
2445 */
2446static int mxser_change_speed(struct mxser_port *info,
2447 struct termios *old_termios)
2448{
2449 unsigned cflag, cval, fcr;
2450 int ret = 0;
2451 unsigned char status;
2452 long baud;
2453 unsigned long flags;
2454
2455 if (!info->tty || !info->tty->termios)
2456 return ret;
2457 cflag = info->tty->termios->c_cflag;
2458 if (!(info->ioaddr))
2459 return ret;
2460
2461#ifndef B921600
2462#define B921600 (B460800 +1)
2463#endif
2464 if (mxser_set_baud_method[info->tty->index] == 0) {
2465 baud = tty_get_baud_rate(info->tty);
2466 mxser_set_baud(info, baud);
2467 }
2468
2469 /* byte size and parity */
2470 switch (cflag & CSIZE) {
2471 case CS5:
2472 cval = 0x00;
2473 break;
2474 case CS6:
2475 cval = 0x01;
2476 break;
2477 case CS7:
2478 cval = 0x02;
2479 break;
2480 case CS8:
2481 cval = 0x03;
2482 break;
2483 default:
2484 cval = 0x00;
2485 break; /* too keep GCC shut... */
2486 }
2487 if (cflag & CSTOPB)
2488 cval |= 0x04;
2489 if (cflag & PARENB)
2490 cval |= UART_LCR_PARITY;
2491 if (!(cflag & PARODD))
2492 cval |= UART_LCR_EPAR;
2493 if (cflag & CMSPAR)
2494 cval |= UART_LCR_SPAR;
2495
2496 if ((info->type == PORT_8250) || (info->type == PORT_16450)) {
2497 if (info->board->chip_flag) {
2498 fcr = UART_FCR_ENABLE_FIFO;
2499 fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
2500 SET_MOXA_MUST_FIFO_VALUE(info);
2501 } else
2502 fcr = 0;
2503 } else {
2504 fcr = UART_FCR_ENABLE_FIFO;
2505 /* following add by Victor Yu. 08-30-2002 */
2506 if (info->board->chip_flag) {
2507 fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
2508 SET_MOXA_MUST_FIFO_VALUE(info);
2509 } else {
2510 /* above add by Victor Yu. 08-30-2002 */
2511 switch (info->rx_trigger) {
2512 case 1:
2513 fcr |= UART_FCR_TRIGGER_1;
2514 break;
2515 case 4:
2516 fcr |= UART_FCR_TRIGGER_4;
2517 break;
2518 case 8:
2519 fcr |= UART_FCR_TRIGGER_8;
2520 break;
2521 default:
2522 fcr |= UART_FCR_TRIGGER_14;
2523 break; 2473 break;
2524 } 2474 if (bits & irqbits)
2525 } 2475 continue;
2526 } 2476 port = &brd->ports[i];
2527 2477
2528 /* CTS flow control flag and modem status interrupts */ 2478 int_cnt = 0;
2529 info->IER &= ~UART_IER_MSI; 2479 do {
2530 info->MCR &= ~UART_MCR_AFE; 2480 /* following add by Victor Yu. 09-13-2002 */
2531 if (cflag & CRTSCTS) { 2481 iir = inb(port->ioaddr + UART_IIR);
2532 info->flags |= ASYNC_CTS_FLOW; 2482 if (iir & UART_IIR_NO_INT)
2533 info->IER |= UART_IER_MSI; 2483 break;
2534 if ((info->type == PORT_16550A) || (info->board->chip_flag)) { 2484 iir &= MOXA_MUST_IIR_MASK;
2535 info->MCR |= UART_MCR_AFE; 2485 if (!port->tty) {
2536/* status = mxser_get_msr(info->ioaddr, 0, info->port); */ 2486 status = inb(port->ioaddr + UART_LSR);
2537/* 2487 outb(0x27, port->ioaddr + UART_FCR);
2538 save_flags(flags); 2488 inb(port->ioaddr + UART_MSR);
2539 cli(); 2489 break;
2540 status = inb(baseaddr + UART_MSR);
2541 restore_flags(flags);
2542*/
2543 /* mxser_check_modem_status(info, status); */
2544 } else {
2545/* status = mxser_get_msr(info->ioaddr, 0, info->port); */
2546 /* MX_LOCK(&info->slock); */
2547 status = inb(info->ioaddr + UART_MSR);
2548 /* MX_UNLOCK(&info->slock); */
2549 if (info->tty->hw_stopped) {
2550 if (status & UART_MSR_CTS) {
2551 info->tty->hw_stopped = 0;
2552 if (info->type != PORT_16550A &&
2553 !info->board->chip_flag) {
2554 outb(info->IER & ~UART_IER_THRI,
2555 info->ioaddr +
2556 UART_IER);
2557 info->IER |= UART_IER_THRI;
2558 outb(info->IER, info->ioaddr +
2559 UART_IER);
2560 }
2561 set_bit(MXSER_EVENT_TXLOW, &info->event);
2562 schedule_work(&info->tqueue); }
2563 } else {
2564 if (!(status & UART_MSR_CTS)) {
2565 info->tty->hw_stopped = 1;
2566 if ((info->type != PORT_16550A) &&
2567 (!info->board->chip_flag)) {
2568 info->IER &= ~UART_IER_THRI;
2569 outb(info->IER, info->ioaddr +
2570 UART_IER);
2571 }
2572 } 2490 }
2573 } 2491 /* above add by Victor Yu. 09-13-2002 */
2574 }
2575 } else {
2576 info->flags &= ~ASYNC_CTS_FLOW;
2577 }
2578 outb(info->MCR, info->ioaddr + UART_MCR);
2579 if (cflag & CLOCAL) {
2580 info->flags &= ~ASYNC_CHECK_CD;
2581 } else {
2582 info->flags |= ASYNC_CHECK_CD;
2583 info->IER |= UART_IER_MSI;
2584 }
2585 outb(info->IER, info->ioaddr + UART_IER);
2586
2587 /*
2588 * Set up parity check flag
2589 */
2590 info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
2591 if (I_INPCK(info->tty))
2592 info->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
2593 if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
2594 info->read_status_mask |= UART_LSR_BI;
2595
2596 info->ignore_status_mask = 0;
2597
2598 if (I_IGNBRK(info->tty)) {
2599 info->ignore_status_mask |= UART_LSR_BI;
2600 info->read_status_mask |= UART_LSR_BI;
2601 /*
2602 * If we're ignore parity and break indicators, ignore
2603 * overruns too. (For real raw support).
2604 */
2605 if (I_IGNPAR(info->tty)) {
2606 info->ignore_status_mask |=
2607 UART_LSR_OE |
2608 UART_LSR_PE |
2609 UART_LSR_FE;
2610 info->read_status_mask |=
2611 UART_LSR_OE |
2612 UART_LSR_PE |
2613 UART_LSR_FE;
2614 }
2615 }
2616 /* following add by Victor Yu. 09-02-2002 */
2617 if (info->board->chip_flag) {
2618 spin_lock_irqsave(&info->slock, flags);
2619 SET_MOXA_MUST_XON1_VALUE(info->ioaddr, START_CHAR(info->tty));
2620 SET_MOXA_MUST_XOFF1_VALUE(info->ioaddr, STOP_CHAR(info->tty));
2621 if (I_IXON(info->tty)) {
2622 ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
2623 } else {
2624 DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
2625 }
2626 if (I_IXOFF(info->tty)) {
2627 ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
2628 } else {
2629 DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
2630 }
2631 /*
2632 if ( I_IXANY(info->tty) ) {
2633 info->MCR |= MOXA_MUST_MCR_XON_ANY;
2634 ENABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->ioaddr);
2635 } else {
2636 info->MCR &= ~MOXA_MUST_MCR_XON_ANY;
2637 DISABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->ioaddr);
2638 }
2639 */
2640 spin_unlock_irqrestore(&info->slock, flags);
2641 }
2642 /* above add by Victor Yu. 09-02-2002 */
2643
2644
2645 outb(fcr, info->ioaddr + UART_FCR); /* set fcr */
2646 outb(cval, info->ioaddr + UART_LCR);
2647
2648 return ret;
2649}
2650
2651
2652static int mxser_set_baud(struct mxser_port *info, long newspd)
2653{
2654 int quot = 0;
2655 unsigned char cval;
2656 int ret = 0;
2657 unsigned long flags;
2658
2659 if (!info->tty || !info->tty->termios)
2660 return ret;
2661
2662 if (!(info->ioaddr))
2663 return ret;
2664
2665 if (newspd > info->max_baud)
2666 return 0;
2667
2668 info->realbaud = newspd;
2669 if (newspd == 134) {
2670 quot = (2 * info->baud_base / 269);
2671 } else if (newspd) {
2672 quot = info->baud_base / newspd;
2673 if (quot == 0)
2674 quot = 1;
2675 } else {
2676 quot = 0;
2677 }
2678
2679 info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base);
2680 info->timeout += HZ / 50; /* Add .02 seconds of slop */
2681
2682 if (quot) {
2683 spin_lock_irqsave(&info->slock, flags);
2684 info->MCR |= UART_MCR_DTR;
2685 outb(info->MCR, info->ioaddr + UART_MCR);
2686 spin_unlock_irqrestore(&info->slock, flags);
2687 } else {
2688 spin_lock_irqsave(&info->slock, flags);
2689 info->MCR &= ~UART_MCR_DTR;
2690 outb(info->MCR, info->ioaddr + UART_MCR);
2691 spin_unlock_irqrestore(&info->slock, flags);
2692 return ret;
2693 }
2694
2695 cval = inb(info->ioaddr + UART_LCR);
2696
2697 outb(cval | UART_LCR_DLAB, info->ioaddr + UART_LCR); /* set DLAB */
2698
2699 outb(quot & 0xff, info->ioaddr + UART_DLL); /* LS of divisor */
2700 outb(quot >> 8, info->ioaddr + UART_DLM); /* MS of divisor */
2701 outb(cval, info->ioaddr + UART_LCR); /* reset DLAB */
2702
2703
2704 return ret;
2705}
2706 2492
2707/* 2493 /* following add by Victor Yu. 09-02-2002 */
2708 * ------------------------------------------------------------ 2494 status = inb(port->ioaddr + UART_LSR);
2709 * friends of mxser_ioctl()
2710 * ------------------------------------------------------------
2711 */
2712static int mxser_get_serial_info(struct mxser_port *info,
2713 struct serial_struct __user *retinfo)
2714{
2715 struct serial_struct tmp;
2716 2495
2717 if (!retinfo) 2496 if (status & UART_LSR_PE)
2718 return -EFAULT; 2497 port->err_shadow |= NPPI_NOTIFY_PARITY;
2719 memset(&tmp, 0, sizeof(tmp)); 2498 if (status & UART_LSR_FE)
2720 tmp.type = info->type; 2499 port->err_shadow |= NPPI_NOTIFY_FRAMING;
2721 tmp.line = info->tty->index; 2500 if (status & UART_LSR_OE)
2722 tmp.port = info->ioaddr; 2501 port->err_shadow |=
2723 tmp.irq = info->board->irq; 2502 NPPI_NOTIFY_HW_OVERRUN;
2724 tmp.flags = info->flags; 2503 if (status & UART_LSR_BI)
2725 tmp.baud_base = info->baud_base; 2504 port->err_shadow |= NPPI_NOTIFY_BREAK;
2726 tmp.close_delay = info->close_delay;
2727 tmp.closing_wait = info->closing_wait;
2728 tmp.custom_divisor = info->custom_divisor;
2729 tmp.hub6 = 0;
2730 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2731 return -EFAULT;
2732 return 0;
2733}
2734 2505
2735static int mxser_set_serial_info(struct mxser_port *info, 2506 if (port->board->chip_flag) {
2736 struct serial_struct __user *new_info) 2507 /*
2737{ 2508 if ( (status & 0x02) && !(status & 0x01) ) {
2738 struct serial_struct new_serial; 2509 outb(port->ioaddr+UART_FCR, 0x23);
2739 unsigned int flags; 2510 continue;
2740 int retval = 0; 2511 }
2512 */
2513 if (iir == MOXA_MUST_IIR_GDA ||
2514 iir == MOXA_MUST_IIR_RDA ||
2515 iir == MOXA_MUST_IIR_RTO ||
2516 iir == MOXA_MUST_IIR_LSR)
2517 mxser_receive_chars(port,
2518 &status);
2741 2519
2742 if (!new_info || !info->ioaddr) 2520 } else {
2743 return -EFAULT; 2521 /* above add by Victor Yu. 09-02-2002 */
2744 if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2745 return -EFAULT;
2746 2522
2747 if ((new_serial.irq != info->board->irq) || 2523 status &= port->read_status_mask;
2748 (new_serial.port != info->ioaddr) || 2524 if (status & UART_LSR_DR)
2749 (new_serial.custom_divisor != info->custom_divisor) || 2525 mxser_receive_chars(port,
2750 (new_serial.baud_base != info->baud_base)) 2526 &status);
2751 return -EPERM; 2527 }
2528 msr = inb(port->ioaddr + UART_MSR);
2529 if (msr & UART_MSR_ANY_DELTA)
2530 mxser_check_modem_status(port, msr);
2752 2531
2753 flags = info->flags & ASYNC_SPD_MASK; 2532 /* following add by Victor Yu. 09-13-2002 */
2533 if (port->board->chip_flag) {
2534 if (iir == 0x02 && (status &
2535 UART_LSR_THRE))
2536 mxser_transmit_chars(port);
2537 } else {
2538 /* above add by Victor Yu. 09-13-2002 */
2754 2539
2755 if (!capable(CAP_SYS_ADMIN)) { 2540 if (status & UART_LSR_THRE)
2756 if ((new_serial.baud_base != info->baud_base) || 2541 mxser_transmit_chars(port);
2757 (new_serial.close_delay != info->close_delay) || 2542 }
2758 ((new_serial.flags & ~ASYNC_USR_MASK) != (info->flags & ~ASYNC_USR_MASK))) 2543 } while (int_cnt++ < MXSER_ISR_PASS_LIMIT);
2759 return -EPERM; 2544 }
2760 info->flags = ((info->flags & ~ASYNC_USR_MASK) | 2545 if (pass_counter++ > MXSER_ISR_PASS_LIMIT)
2761 (new_serial.flags & ASYNC_USR_MASK)); 2546 break; /* Prevent infinite loops */
2762 } else {
2763 /*
2764 * OK, past this point, all the error checking has been done.
2765 * At this point, we start making changes.....
2766 */
2767 info->flags = ((info->flags & ~ASYNC_FLAGS) |
2768 (new_serial.flags & ASYNC_FLAGS));
2769 info->close_delay = new_serial.close_delay * HZ / 100;
2770 info->closing_wait = new_serial.closing_wait * HZ / 100;
2771 info->tty->low_latency =
2772 (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
2773 info->tty->low_latency = 0; /* (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; */
2774 } 2547 }
2775 2548
2776 /* added by casper, 3/17/2000, for mouse */ 2549 irq_stop:
2777 info->type = new_serial.type; 2550 /* spin_unlock(&gm_lock); */
2778 2551 return handled;
2779 process_txrx_fifo(info);
2780
2781 if (info->flags & ASYNC_INITIALIZED) {
2782 if (flags != (info->flags & ASYNC_SPD_MASK))
2783 mxser_change_speed(info, NULL);
2784 } else
2785 retval = mxser_startup(info);
2786
2787 return retval;
2788} 2552}
2789 2553
2790/* 2554static const struct tty_operations mxser_ops = {
2791 * mxser_get_lsr_info - get line status register info 2555 .open = mxser_open,
2792 * 2556 .close = mxser_close,
2793 * Purpose: Let user call ioctl() to get info when the UART physically 2557 .write = mxser_write,
2794 * is emptied. On bus types like RS485, the transmitter must 2558 .put_char = mxser_put_char,
2795 * release the bus after transmitting. This must be done when 2559 .flush_chars = mxser_flush_chars,
2796 * the transmit shift register is empty, not be done when the 2560 .write_room = mxser_write_room,
2797 * transmit holding register is empty. This functionality 2561 .chars_in_buffer = mxser_chars_in_buffer,
2798 * allows an RS485 driver to be written in user space. 2562 .flush_buffer = mxser_flush_buffer,
2799 */ 2563 .ioctl = mxser_ioctl,
2800static int mxser_get_lsr_info(struct mxser_port *info, 2564 .throttle = mxser_throttle,
2801 unsigned int __user *value) 2565 .unthrottle = mxser_unthrottle,
2802{ 2566 .set_termios = mxser_set_termios,
2803 unsigned char status; 2567 .stop = mxser_stop,
2804 unsigned int result; 2568 .start = mxser_start,
2805 unsigned long flags; 2569 .hangup = mxser_hangup,
2806 2570 .break_ctl = mxser_rs_break,
2807 spin_lock_irqsave(&info->slock, flags); 2571 .wait_until_sent = mxser_wait_until_sent,
2808 status = inb(info->ioaddr + UART_LSR); 2572 .tiocmget = mxser_tiocmget,
2809 spin_unlock_irqrestore(&info->slock, flags); 2573 .tiocmset = mxser_tiocmset,
2810 result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0); 2574};
2811 return put_user(result, value);
2812}
2813 2575
2814/* 2576/*
2815 * This routine sends a break character out the serial port. 2577 * The MOXA Smartio/Industio serial driver boot-time initialization code!
2816 */ 2578 */
2817static void mxser_send_break(struct mxser_port *info, int duration)
2818{
2819 unsigned long flags;
2820 2579
2821 if (!info->ioaddr) 2580static int __devinit mxser_initbrd(struct mxser_board *brd)
2822 return;
2823 set_current_state(TASK_INTERRUPTIBLE);
2824 spin_lock_irqsave(&info->slock, flags);
2825 outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC,
2826 info->ioaddr + UART_LCR);
2827 spin_unlock_irqrestore(&info->slock, flags);
2828 schedule_timeout(duration);
2829 spin_lock_irqsave(&info->slock, flags);
2830 outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC,
2831 info->ioaddr + UART_LCR);
2832 spin_unlock_irqrestore(&info->slock, flags);
2833}
2834
2835static int mxser_tiocmget(struct tty_struct *tty, struct file *file)
2836{ 2581{
2837 struct mxser_port *info = tty->driver_data; 2582 struct mxser_port *info;
2838 unsigned char control, status; 2583 unsigned int i;
2839 unsigned long flags; 2584 int retval;
2840
2841
2842 if (tty->index == MXSER_PORTS)
2843 return -ENOIOCTLCMD;
2844 if (tty->flags & (1 << TTY_IO_ERROR))
2845 return -EIO;
2846
2847 control = info->MCR;
2848 2585
2849 spin_lock_irqsave(&info->slock, flags); 2586 printk(KERN_INFO "max. baud rate = %d bps.\n", brd->ports[0].max_baud);
2850 status = inb(info->ioaddr + UART_MSR);
2851 if (status & UART_MSR_ANY_DELTA)
2852 mxser_check_modem_status(info, status);
2853 spin_unlock_irqrestore(&info->slock, flags);
2854 return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) |
2855 ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) |
2856 ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) |
2857 ((status & UART_MSR_RI) ? TIOCM_RNG : 0) |
2858 ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) |
2859 ((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
2860}
2861 2587
2862static int mxser_tiocmset(struct tty_struct *tty, struct file *file, 2588 for (i = 0; i < brd->nports; i++) {
2863 unsigned int set, unsigned int clear) 2589 info = &brd->ports[i];
2864{ 2590 info->board = brd;
2865 struct mxser_port *info = tty->driver_data; 2591 info->stop_rx = 0;
2866 unsigned long flags; 2592 info->ldisc_stop_rx = 0;
2867 2593
2594 /* Enhance mode enabled here */
2595 if (brd->chip_flag != MOXA_OTHER_UART)
2596 ENABLE_MOXA_MUST_ENCHANCE_MODE(info->ioaddr);
2868 2597
2869 if (tty->index == MXSER_PORTS) 2598 info->flags = ASYNC_SHARE_IRQ;
2870 return -ENOIOCTLCMD; 2599 info->type = brd->uart_type;
2871 if (tty->flags & (1 << TTY_IO_ERROR))
2872 return -EIO;
2873 2600
2874 spin_lock_irqsave(&info->slock, flags); 2601 process_txrx_fifo(info);
2875 2602
2876 if (set & TIOCM_RTS) 2603 info->custom_divisor = info->baud_base * 16;
2877 info->MCR |= UART_MCR_RTS; 2604 info->close_delay = 5 * HZ / 10;
2878 if (set & TIOCM_DTR) 2605 info->closing_wait = 30 * HZ;
2879 info->MCR |= UART_MCR_DTR; 2606 INIT_WORK(&info->tqueue, mxser_do_softint, info);
2607 info->normal_termios = mxvar_sdriver->init_termios;
2608 init_waitqueue_head(&info->open_wait);
2609 init_waitqueue_head(&info->close_wait);
2610 init_waitqueue_head(&info->delta_msr_wait);
2611 memset(&info->mon_data, 0, sizeof(struct mxser_mon));
2612 info->err_shadow = 0;
2613 spin_lock_init(&info->slock);
2880 2614
2881 if (clear & TIOCM_RTS) 2615 /* before set INT ISR, disable all int */
2882 info->MCR &= ~UART_MCR_RTS; 2616 outb(inb(info->ioaddr + UART_IER) & 0xf0,
2883 if (clear & TIOCM_DTR) 2617 info->ioaddr + UART_IER);
2884 info->MCR &= ~UART_MCR_DTR; 2618 }
2619 /*
2620 * Allocate the IRQ if necessary
2621 */
2885 2622
2886 outb(info->MCR, info->ioaddr + UART_MCR); 2623 retval = request_irq(brd->irq, mxser_interrupt,
2887 spin_unlock_irqrestore(&info->slock, flags); 2624 (brd->ports[0].flags & ASYNC_SHARE_IRQ) ? IRQF_SHARED :
2625 IRQF_DISABLED, "mxser", brd);
2626 if (retval) {
2627 printk(KERN_ERR "Board %s: Request irq failed, IRQ (%d) may "
2628 "conflict with another device.\n",
2629 mxser_brdname[brd->board_type - 1], brd->irq);
2630 return retval;
2631 }
2888 return 0; 2632 return 0;
2889} 2633}
2890 2634
2891
2892static int mxser_read_register(int, unsigned short *);
2893static int mxser_program_mode(int);
2894static void mxser_normal_mode(int);
2895
2896static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd) 2635static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd)
2897{ 2636{
2898 int id, i, bits; 2637 int id, i, bits;
@@ -2988,111 +2727,303 @@ static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd)
2988 return brd->nports; 2727 return brd->nports;
2989} 2728}
2990 2729
2991#define CHIP_SK 0x01 /* Serial Data Clock in Eprom */ 2730static int __init mxser_get_PCI_conf(int board_type, struct mxser_board *brd,
2992#define CHIP_DO 0x02 /* Serial Data Output in Eprom */ 2731 struct pci_dev *pdev)
2993#define CHIP_CS 0x04 /* Serial Chip Select in Eprom */
2994#define CHIP_DI 0x08 /* Serial Data Input in Eprom */
2995#define EN_CCMD 0x000 /* Chip's command register */
2996#define EN0_RSARLO 0x008 /* Remote start address reg 0 */
2997#define EN0_RSARHI 0x009 /* Remote start address reg 1 */
2998#define EN0_RCNTLO 0x00A /* Remote byte count reg WR */
2999#define EN0_RCNTHI 0x00B /* Remote byte count reg WR */
3000#define EN0_DCFG 0x00E /* Data configuration reg WR */
3001#define EN0_PORT 0x010 /* Rcv missed frame error counter RD */
3002#define ENC_PAGE0 0x000 /* Select page 0 of chip registers */
3003#define ENC_PAGE3 0x0C0 /* Select page 3 of chip registers */
3004static int mxser_read_register(int port, unsigned short *regs)
3005{ 2732{
3006 int i, k, value, id; 2733 unsigned int i, j;
3007 unsigned int j; 2734 unsigned long ioaddress;
2735 int retval;
3008 2736
3009 id = mxser_program_mode(port); 2737 /* io address */
3010 if (id < 0) 2738 brd->board_type = board_type;
3011 return id; 2739 brd->nports = mxser_numports[board_type - 1];
3012 for (i = 0; i < 14; i++) { 2740 ioaddress = pci_resource_start(pdev, 2);
3013 k = (i & 0x3F) | 0x180; 2741 retval = pci_request_region(pdev, 2, "mxser(IO)");
3014 for (j = 0x100; j > 0; j >>= 1) { 2742 if (retval)
3015 outb(CHIP_CS, port); 2743 goto err;
3016 if (k & j) { 2744
3017 outb(CHIP_CS | CHIP_DO, port); 2745 for (i = 0; i < brd->nports; i++)
3018 outb(CHIP_CS | CHIP_DO | CHIP_SK, port); /* A? bit of read */ 2746 brd->ports[i].ioaddr = ioaddress + 8 * i;
3019 } else { 2747
3020 outb(CHIP_CS, port); 2748 /* vector */
3021 outb(CHIP_CS | CHIP_SK, port); /* A? bit of read */ 2749 ioaddress = pci_resource_start(pdev, 3);
2750 retval = pci_request_region(pdev, 3, "mxser(vector)");
2751 if (retval)
2752 goto err_relio;
2753 brd->vector = ioaddress;
2754
2755 /* irq */
2756 brd->irq = pdev->irq;
2757
2758 brd->chip_flag = CheckIsMoxaMust(brd->ports[0].ioaddr);
2759 brd->uart_type = PORT_16550A;
2760 brd->vector_mask = 0;
2761
2762 for (i = 0; i < brd->nports; i++) {
2763 for (j = 0; j < UART_INFO_NUM; j++) {
2764 if (Gpci_uart_info[j].type == brd->chip_flag) {
2765 brd->ports[i].max_baud =
2766 Gpci_uart_info[j].max_baud;
2767
2768 /* exception....CP-102 */
2769 if (board_type == MXSER_BOARD_CP102)
2770 brd->ports[i].max_baud = 921600;
2771 break;
3022 } 2772 }
3023 } 2773 }
3024 (void)inb(port); 2774 }
3025 value = 0; 2775
3026 for (k = 0, j = 0x8000; k < 16; k++, j >>= 1) { 2776 if (brd->chip_flag == MOXA_MUST_MU860_HWID) {
3027 outb(CHIP_CS, port); 2777 for (i = 0; i < brd->nports; i++) {
3028 outb(CHIP_CS | CHIP_SK, port); 2778 if (i < 4)
3029 if (inb(port) & CHIP_DI) 2779 brd->ports[i].opmode_ioaddr = ioaddress + 4;
3030 value |= j; 2780 else
2781 brd->ports[i].opmode_ioaddr = ioaddress + 0x0c;
3031 } 2782 }
3032 regs[i] = value; 2783 outb(0, ioaddress + 4); /* default set to RS232 mode */
3033 outb(0, port); 2784 outb(0, ioaddress + 0x0c); /* default set to RS232 mode */
3034 } 2785 }
3035 mxser_normal_mode(port); 2786
3036 return id; 2787 for (i = 0; i < brd->nports; i++) {
2788 brd->vector_mask |= (1 << i);
2789 brd->ports[i].baud_base = 921600;
2790 }
2791 return 0;
2792err_relio:
2793 pci_release_region(pdev, 2);
2794err:
2795 return retval;
3037} 2796}
3038 2797
3039static int mxser_program_mode(int port) 2798static int __init mxser_module_init(void)
3040{ 2799{
3041 int id, i, j, n; 2800 struct pci_dev *pdev = NULL;
3042 /* unsigned long flags; */ 2801 struct mxser_board *brd;
2802 unsigned int i, m;
2803 int retval, b, n;
3043 2804
3044 spin_lock(&gm_lock); 2805 pr_debug("Loading module mxser ...\n");
3045 outb(0, port);
3046 outb(0, port);
3047 outb(0, port);
3048 (void)inb(port);
3049 (void)inb(port);
3050 outb(0, port);
3051 (void)inb(port);
3052 /* restore_flags(flags); */
3053 spin_unlock(&gm_lock);
3054 2806
3055 id = inb(port + 1) & 0x1F; 2807 mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1);
3056 if ((id != C168_ASIC_ID) && 2808 if (!mxvar_sdriver)
3057 (id != C104_ASIC_ID) && 2809 return -ENOMEM;
3058 (id != C102_ASIC_ID) && 2810 spin_lock_init(&gm_lock);
3059 (id != CI132_ASIC_ID) && 2811
3060 (id != CI134_ASIC_ID) && 2812 for (i = 0; i < MXSER_BOARDS; i++)
3061 (id != CI104J_ASIC_ID)) 2813 mxser_boards[i].board_type = -1;
3062 return -1; 2814
3063 for (i = 0, j = 0; i < 4; i++) { 2815 printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n",
3064 n = inb(port + 2); 2816 MXSER_VERSION);
3065 if (n == 'M') { 2817
3066 j = 1; 2818 /* Initialize the tty_driver structure */
3067 } else if ((j == 1) && (n == 1)) { 2819 mxvar_sdriver->magic = TTY_DRIVER_MAGIC;
3068 j = 2; 2820 mxvar_sdriver->name = "ttyM";
3069 break; 2821 mxvar_sdriver->major = ttymajor;
3070 } else 2822 mxvar_sdriver->minor_start = 0;
3071 j = 0; 2823 mxvar_sdriver->num = MXSER_PORTS + 1;
2824 mxvar_sdriver->type = TTY_DRIVER_TYPE_SERIAL;
2825 mxvar_sdriver->subtype = SERIAL_TYPE_NORMAL;
2826 mxvar_sdriver->init_termios = tty_std_termios;
2827 mxvar_sdriver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL;
2828 mxvar_sdriver->flags = TTY_DRIVER_REAL_RAW;
2829 tty_set_operations(mxvar_sdriver, &mxser_ops);
2830 mxvar_sdriver->ttys = mxvar_tty;
2831 mxvar_sdriver->termios = mxvar_termios;
2832 mxvar_sdriver->termios_locked = mxvar_termios_locked;
2833
2834 mxvar_diagflag = 0;
2835
2836 m = 0;
2837 /* Start finding ISA boards here */
2838 for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
2839 int cap;
2840
2841 if (!(cap = mxserBoardCAP[b]))
2842 continue;
2843
2844 brd = &mxser_boards[m];
2845 retval = mxser_get_ISA_conf(cap, brd);
2846
2847 if (retval != 0)
2848 printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n",
2849 mxser_brdname[brd->board_type - 1], ioaddr[b]);
2850
2851 if (retval <= 0) {
2852 if (retval == MXSER_ERR_IRQ)
2853 printk(KERN_ERR "Invalid interrupt number, "
2854 "board not configured\n");
2855 else if (retval == MXSER_ERR_IRQ_CONFLIT)
2856 printk(KERN_ERR "Invalid interrupt number, "
2857 "board not configured\n");
2858 else if (retval == MXSER_ERR_VECTOR)
2859 printk(KERN_ERR "Invalid interrupt vector, "
2860 "board not configured\n");
2861 else if (retval == MXSER_ERR_IOADDR)
2862 printk(KERN_ERR "Invalid I/O address, "
2863 "board not configured\n");
2864
2865 continue;
2866 }
2867
2868 brd->pdev = NULL;
2869
2870 /* mxser_initbrd will hook ISR. */
2871 if (mxser_initbrd(brd) < 0)
2872 continue;
2873
2874 m++;
3072 } 2875 }
3073 if (j != 2) 2876
3074 id = -2; 2877 /* Start finding ISA boards from module arg */
3075 return id; 2878 for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
2879 unsigned long cap;
2880
2881 if (!(cap = ioaddr[b]))
2882 continue;
2883
2884 brd = &mxser_boards[m];
2885 retval = mxser_get_ISA_conf(cap, &mxser_boards[m]);
2886
2887 if (retval != 0)
2888 printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n",
2889 mxser_brdname[brd->board_type - 1], ioaddr[b]);
2890
2891 if (retval <= 0) {
2892 if (retval == MXSER_ERR_IRQ)
2893 printk(KERN_ERR "Invalid interrupt number, "
2894 "board not configured\n");
2895 else if (retval == MXSER_ERR_IRQ_CONFLIT)
2896 printk(KERN_ERR "Invalid interrupt number, "
2897 "board not configured\n");
2898 else if (retval == MXSER_ERR_VECTOR)
2899 printk(KERN_ERR "Invalid interrupt vector, "
2900 "board not configured\n");
2901 else if (retval == MXSER_ERR_IOADDR)
2902 printk(KERN_ERR "Invalid I/O address, "
2903 "board not configured\n");
2904
2905 continue;
2906 }
2907
2908 brd->pdev = NULL;
2909 /* mxser_initbrd will hook ISR. */
2910 if (mxser_initbrd(brd) < 0)
2911 continue;
2912
2913 m++;
2914 }
2915
2916 /* start finding PCI board here */
2917 n = ARRAY_SIZE(mxser_pcibrds) - 1;
2918 b = 0;
2919 while (b < n) {
2920 pdev = pci_get_device(mxser_pcibrds[b].vendor,
2921 mxser_pcibrds[b].device, pdev);
2922 if (pdev == NULL) {
2923 b++;
2924 continue;
2925 }
2926 printk(KERN_INFO "Found MOXA %s board(BusNo=%d,DevNo=%d)\n",
2927 mxser_brdname[(int) (mxser_pcibrds[b].driver_data) - 1],
2928 pdev->bus->number, PCI_SLOT(pdev->devfn));
2929 if (m >= MXSER_BOARDS)
2930 printk(KERN_ERR
2931 "Too many Smartio/Industio family boards find "
2932 "(maximum %d), board not configured\n",
2933 MXSER_BOARDS);
2934 else {
2935 if (pci_enable_device(pdev)) {
2936 printk(KERN_ERR "Moxa SmartI/O PCI enable "
2937 "fail !\n");
2938 continue;
2939 }
2940 brd = &mxser_boards[m];
2941 brd->pdev = pdev;
2942 retval = mxser_get_PCI_conf(
2943 (int)mxser_pcibrds[b].driver_data,
2944 brd, pdev);
2945 if (retval < 0) {
2946 if (retval == MXSER_ERR_IRQ)
2947 printk(KERN_ERR
2948 "Invalid interrupt number, "
2949 "board not configured\n");
2950 else if (retval == MXSER_ERR_IRQ_CONFLIT)
2951 printk(KERN_ERR
2952 "Invalid interrupt number, "
2953 "board not configured\n");
2954 else if (retval == MXSER_ERR_VECTOR)
2955 printk(KERN_ERR
2956 "Invalid interrupt vector, "
2957 "board not configured\n");
2958 else if (retval == MXSER_ERR_IOADDR)
2959 printk(KERN_ERR
2960 "Invalid I/O address, "
2961 "board not configured\n");
2962 continue;
2963 }
2964 /* mxser_initbrd will hook ISR. */
2965 if (mxser_initbrd(brd) < 0)
2966 continue;
2967 m++;
2968 /* Keep an extra reference if we succeeded. It will
2969 be returned at unload time */
2970 pci_dev_get(pdev);
2971 }
2972 }
2973
2974 retval = tty_register_driver(mxvar_sdriver);
2975 if (retval) {
2976 printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family"
2977 " driver !\n");
2978 put_tty_driver(mxvar_sdriver);
2979
2980 for (i = 0; i < MXSER_BOARDS; i++) {
2981 if (mxser_boards[i].board_type == -1)
2982 continue;
2983 else {
2984 free_irq(mxser_boards[i].irq, &mxser_boards[i]);
2985 /* todo: release io, vector */
2986 }
2987 }
2988 return retval;
2989 }
2990
2991 pr_debug("Done.\n");
2992
2993 return retval;
3076} 2994}
3077 2995
3078static void mxser_normal_mode(int port) 2996static void __exit mxser_module_exit(void)
3079{ 2997{
3080 int i, n; 2998 int i, err;
3081 2999
3082 outb(0xA5, port + 1); 3000 pr_debug("Unloading module mxser ...\n");
3083 outb(0x80, port + 3); 3001
3084 outb(12, port + 0); /* 9600 bps */ 3002 err = tty_unregister_driver(mxvar_sdriver);
3085 outb(0, port + 1); 3003 if (!err)
3086 outb(0x03, port + 3); /* 8 data bits */ 3004 put_tty_driver(mxvar_sdriver);
3087 outb(0x13, port + 4); /* loop back mode */ 3005 else
3088 for (i = 0; i < 16; i++) { 3006 printk(KERN_ERR "Couldn't unregister MOXA Smartio/Industio family serial driver\n");
3089 n = inb(port + 5); 3007
3090 if ((n & 0x61) == 0x60) 3008 for (i = 0; i < MXSER_BOARDS; i++) {
3091 break; 3009 struct pci_dev *pdev;
3092 if ((n & 1) == 1) 3010
3093 (void)inb(port); 3011 if (mxser_boards[i].board_type == -1)
3012 continue;
3013 else {
3014 pdev = mxser_boards[i].pdev;
3015 free_irq(mxser_boards[i].irq, &mxser_boards[i]);
3016 if (pdev != NULL) { /* PCI */
3017 pci_release_region(pdev, 2);
3018 pci_release_region(pdev, 3);
3019 pci_dev_put(pdev);
3020 } else {
3021 release_region(mxser_boards[i].ports[0].ioaddr, 8 * mxser_boards[i].nports);
3022 release_region(mxser_boards[i].vector, 1);
3023 }
3024 }
3094 } 3025 }
3095 outb(0x00, port + 4); 3026 pr_debug("Done.\n");
3096} 3027}
3097 3028
3098module_init(mxser_module_init); 3029module_init(mxser_module_init);
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-21 15:28:15 -0400