[PATCH] Char: mxser_new, code upside down
authorJiri Slaby <jirislaby@gmail.com>
Fri, 8 Dec 2006 10:38:21 +0000 (02:38 -0800)
committerLinus Torvalds <torvalds@woody.osdl.org>
Fri, 8 Dec 2006 16:28:54 +0000 (08:28 -0800)
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>
drivers/char/mxser_new.c

index 0e22f80104464f15386bf91e0e2ab2a1600b16ba..92ca016d2e3ebebe788a0268bf21268ae571758f 100644 (file)
@@ -191,7 +191,6 @@ static const struct mxpciuart_info Gpci_uart_info[UART_INFO_NUM] = {
        {MOXA_MUST_MU860_HWID, 128, 128, 128, 96, 96, 32, 921600L}
 };
 
-
 static struct pci_device_id mxser_pcibrds[] = {
        { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C168),
                .driver_data = MXSER_BOARD_C168_PCI },
@@ -377,57 +376,6 @@ static struct mxser_mon_ext mon_data_ext;
 static int mxser_set_baud_method[MXSER_PORTS + 1];
 static spinlock_t gm_lock;
 
-/*
- * static functions:
- */
-
-static int mxser_init(void);
-
-/* static void   mxser_poll(unsigned long); */
-static int mxser_get_ISA_conf(int, struct mxser_board *);
-static void mxser_do_softint(void *);
-static int mxser_open(struct tty_struct *, struct file *);
-static void mxser_close(struct tty_struct *, struct file *);
-static int mxser_write(struct tty_struct *, const unsigned char *, int);
-static int mxser_write_room(struct tty_struct *);
-static void mxser_flush_buffer(struct tty_struct *);
-static int mxser_chars_in_buffer(struct tty_struct *);
-static void mxser_flush_chars(struct tty_struct *);
-static void mxser_put_char(struct tty_struct *, unsigned char);
-static int mxser_ioctl(struct tty_struct *, struct file *, uint, ulong);
-static int mxser_ioctl_special(unsigned int, void __user *);
-static void mxser_throttle(struct tty_struct *);
-static void mxser_unthrottle(struct tty_struct *);
-static void mxser_set_termios(struct tty_struct *, struct termios *);
-static void mxser_stop(struct tty_struct *);
-static void mxser_start(struct tty_struct *);
-static void mxser_hangup(struct tty_struct *);
-static void mxser_rs_break(struct tty_struct *, int);
-static irqreturn_t mxser_interrupt(int, void *, struct pt_regs *);
-static void mxser_receive_chars(struct mxser_port *, int *);
-static void mxser_transmit_chars(struct mxser_port *);
-static void mxser_check_modem_status(struct mxser_port *, int);
-static int mxser_block_til_ready(struct tty_struct *, struct file *,
-               struct mxser_port *);
-static int mxser_startup(struct mxser_port *);
-static void mxser_shutdown(struct mxser_port *);
-static int mxser_change_speed(struct mxser_port *, struct termios *);
-static int mxser_get_serial_info(struct mxser_port *,
-               struct serial_struct __user *);
-static int mxser_set_serial_info(struct mxser_port *,
-               struct serial_struct __user *);
-static int mxser_get_lsr_info(struct mxser_port *, unsigned int __user *);
-static void mxser_send_break(struct mxser_port *, int);
-static int mxser_tiocmget(struct tty_struct *, struct file *);
-static int mxser_tiocmset(struct tty_struct *, struct file *, unsigned int,
-               unsigned int);
-static int mxser_set_baud(struct mxser_port *, long);
-static void mxser_wait_until_sent(struct tty_struct *, int);
-
-static void mxser_startrx(struct tty_struct *);
-static void mxser_stoprx(struct tty_struct *);
-
-
 static int CheckIsMoxaMust(int io)
 {
        u8 oldmcr, hwid;
@@ -453,75 +401,6 @@ static int CheckIsMoxaMust(int io)
 
 /* above is modified by Victor Yu. 08-15-2002 */
 
-static const struct tty_operations mxser_ops = {
-       .open = mxser_open,
-       .close = mxser_close,
-       .write = mxser_write,
-       .put_char = mxser_put_char,
-       .flush_chars = mxser_flush_chars,
-       .write_room = mxser_write_room,
-       .chars_in_buffer = mxser_chars_in_buffer,
-       .flush_buffer = mxser_flush_buffer,
-       .ioctl = mxser_ioctl,
-       .throttle = mxser_throttle,
-       .unthrottle = mxser_unthrottle,
-       .set_termios = mxser_set_termios,
-       .stop = mxser_stop,
-       .start = mxser_start,
-       .hangup = mxser_hangup,
-       .break_ctl = mxser_rs_break,
-       .wait_until_sent = mxser_wait_until_sent,
-       .tiocmget = mxser_tiocmget,
-       .tiocmset = mxser_tiocmset,
-};
-
-/*
- * The MOXA Smartio/Industio serial driver boot-time initialization code!
- */
-
-static int __init mxser_module_init(void)
-{
-       int ret;
-
-       pr_debug("Loading module mxser ...\n");
-       ret = mxser_init();
-       pr_debug("Done.\n");
-       return ret;
-}
-
-static void __exit mxser_module_exit(void)
-{
-       int i, err;
-
-       pr_debug("Unloading module mxser ...\n");
-
-       err = tty_unregister_driver(mxvar_sdriver);
-       if (!err)
-               put_tty_driver(mxvar_sdriver);
-       else
-               printk(KERN_ERR "Couldn't unregister MOXA Smartio/Industio family serial driver\n");
-
-       for (i = 0; i < MXSER_BOARDS; i++) {
-               struct pci_dev *pdev;
-
-               if (mxser_boards[i].board_type == -1)
-                       continue;
-               else {
-                       pdev = mxser_boards[i].pdev;
-                       free_irq(mxser_boards[i].irq, &mxser_boards[i]);
-                       if (pdev != NULL) {     /* PCI */
-                               pci_release_region(pdev, 2);
-                               pci_release_region(pdev, 3);
-                               pci_dev_put(pdev);
-                       } else {
-                               release_region(mxser_boards[i].ports[0].ioaddr, 8 * mxser_boards[i].nports);
-                               release_region(mxser_boards[i].vector, 1);
-                       }
-               }
-       }
-       pr_debug("Done.\n");
-}
-
 static void process_txrx_fifo(struct mxser_port *info)
 {
        int i;
@@ -542,389 +421,621 @@ static void process_txrx_fifo(struct mxser_port *info)
                        }
 }
 
-static int __devinit mxser_initbrd(struct mxser_board *brd)
+static void mxser_do_softint(void *private_)
 {
-       struct mxser_port *info;
-       unsigned int i;
-       int retval;
+       struct mxser_port *info = private_;
+       struct tty_struct *tty;
 
-       printk(KERN_INFO "max. baud rate = %d bps.\n", brd->ports[0].max_baud);
+       tty = info->tty;
 
-       for (i = 0; i < brd->nports; i++) {
-               info = &brd->ports[i];
-               info->board = brd;
-               info->stop_rx = 0;
-               info->ldisc_stop_rx = 0;
+       if (test_and_clear_bit(MXSER_EVENT_TXLOW, &info->event))
+               tty_wakeup(tty);
+       if (test_and_clear_bit(MXSER_EVENT_HANGUP, &info->event))
+               tty_hangup(tty);
+}
 
-               /* Enhance mode enabled here */
-               if (brd->chip_flag != MOXA_OTHER_UART)
-                       ENABLE_MOXA_MUST_ENCHANCE_MODE(info->ioaddr);
+static unsigned char mxser_get_msr(int baseaddr, int mode, int port)
+{
+       unsigned char status = 0;
 
-               info->flags = ASYNC_SHARE_IRQ;
-               info->type = brd->uart_type;
+       status = inb(baseaddr + UART_MSR);
 
-               process_txrx_fifo(info);
+       mxser_msr[port] &= 0x0F;
+       mxser_msr[port] |= status;
+       status = mxser_msr[port];
+       if (mode)
+               mxser_msr[port] = 0;
 
-               info->custom_divisor = info->baud_base * 16;
-               info->close_delay = 5 * HZ / 10;
-               info->closing_wait = 30 * HZ;
-               INIT_WORK(&info->tqueue, mxser_do_softint, info);
-               info->normal_termios = mxvar_sdriver->init_termios;
-               init_waitqueue_head(&info->open_wait);
-               init_waitqueue_head(&info->close_wait);
-               init_waitqueue_head(&info->delta_msr_wait);
-               memset(&info->mon_data, 0, sizeof(struct mxser_mon));
-               info->err_shadow = 0;
-               spin_lock_init(&info->slock);
+       return status;
+}
 
-               /* before set INT ISR, disable all int */
-               outb(inb(info->ioaddr + UART_IER) & 0xf0,
-                       info->ioaddr + UART_IER);
+static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp,
+               struct mxser_port *port)
+{
+       DECLARE_WAITQUEUE(wait, current);
+       int retval;
+       int do_clocal = 0;
+       unsigned long flags;
+
+       /*
+        * If non-blocking mode is set, or the port is not enabled,
+        * then make the check up front and then exit.
+        */
+       if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
+               port->flags |= ASYNC_NORMAL_ACTIVE;
+               return 0;
        }
+
+       if (tty->termios->c_cflag & CLOCAL)
+               do_clocal = 1;
+
        /*
-        * Allocate the IRQ if necessary
+        * Block waiting for the carrier detect and the line to become
+        * free (i.e., not in use by the callout).  While we are in
+        * this loop, port->count is dropped by one, so that
+        * mxser_close() knows when to free things.  We restore it upon
+        * exit, either normal or abnormal.
         */
+       retval = 0;
+       add_wait_queue(&port->open_wait, &wait);
 
-       retval = request_irq(brd->irq, mxser_interrupt,
-                       (brd->ports[0].flags & ASYNC_SHARE_IRQ) ? IRQF_SHARED :
-                       IRQF_DISABLED, "mxser", brd);
-       if (retval) {
-               printk(KERN_ERR "Board %s: Request irq failed, IRQ (%d) may "
-                       "conflict with another device.\n",
-                       mxser_brdname[brd->board_type - 1], brd->irq);
-               return retval;
+       spin_lock_irqsave(&port->slock, flags);
+       if (!tty_hung_up_p(filp))
+               port->count--;
+       spin_unlock_irqrestore(&port->slock, flags);
+       port->blocked_open++;
+       while (1) {
+               spin_lock_irqsave(&port->slock, flags);
+               outb(inb(port->ioaddr + UART_MCR) |
+                       UART_MCR_DTR | UART_MCR_RTS, port->ioaddr + UART_MCR);
+               spin_unlock_irqrestore(&port->slock, flags);
+               set_current_state(TASK_INTERRUPTIBLE);
+               if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
+                       if (port->flags & ASYNC_HUP_NOTIFY)
+                               retval = -EAGAIN;
+                       else
+                               retval = -ERESTARTSYS;
+                       break;
+               }
+               if (!(port->flags & ASYNC_CLOSING) &&
+                               (do_clocal ||
+                               (inb(port->ioaddr + UART_MSR) & UART_MSR_DCD)))
+                       break;
+               if (signal_pending(current)) {
+                       retval = -ERESTARTSYS;
+                       break;
+               }
+               schedule();
        }
+       set_current_state(TASK_RUNNING);
+       remove_wait_queue(&port->open_wait, &wait);
+       if (!tty_hung_up_p(filp))
+               port->count++;
+       port->blocked_open--;
+       if (retval)
+               return retval;
+       port->flags |= ASYNC_NORMAL_ACTIVE;
        return 0;
 }
 
-static int __init mxser_get_PCI_conf(int board_type, struct mxser_board *brd,
-               struct pci_dev *pdev)
+static int mxser_set_baud(struct mxser_port *info, long newspd)
 {
-       unsigned int i, j;
-       unsigned long ioaddress;
-       int retval;
-
-       /* io address */
-       brd->board_type = board_type;
-       brd->nports = mxser_numports[board_type - 1];
-       ioaddress = pci_resource_start(pdev, 2);
-       retval = pci_request_region(pdev, 2, "mxser(IO)");
-       if (retval)
-               goto err;
-
-       for (i = 0; i < brd->nports; i++)
-               brd->ports[i].ioaddr = ioaddress + 8 * i;
-
-       /* vector */
-       ioaddress = pci_resource_start(pdev, 3);
-       retval = pci_request_region(pdev, 3, "mxser(vector)");
-       if (retval)
-               goto err_relio;
-       brd->vector = ioaddress;
+       int quot = 0;
+       unsigned char cval;
+       int ret = 0;
+       unsigned long flags;
 
-       /* irq */
-       brd->irq = pdev->irq;
+       if (!info->tty || !info->tty->termios)
+               return ret;
 
-       brd->chip_flag = CheckIsMoxaMust(brd->ports[0].ioaddr);
-       brd->uart_type = PORT_16550A;
-       brd->vector_mask = 0;
+       if (!(info->ioaddr))
+               return ret;
 
-       for (i = 0; i < brd->nports; i++) {
-               for (j = 0; j < UART_INFO_NUM; j++) {
-                       if (Gpci_uart_info[j].type == brd->chip_flag) {
-                               brd->ports[i].max_baud =
-                                       Gpci_uart_info[j].max_baud;
+       if (newspd > info->max_baud)
+               return 0;
 
-                               /* exception....CP-102 */
-                               if (board_type == MXSER_BOARD_CP102)
-                                       brd->ports[i].max_baud = 921600;
-                               break;
-                       }
-               }
+       info->realbaud = newspd;
+       if (newspd == 134) {
+               quot = (2 * info->baud_base / 269);
+       } else if (newspd) {
+               quot = info->baud_base / newspd;
+               if (quot == 0)
+                       quot = 1;
+       } else {
+               quot = 0;
        }
 
-       if (brd->chip_flag == MOXA_MUST_MU860_HWID) {
-               for (i = 0; i < brd->nports; i++) {
-                       if (i < 4)
-                               brd->ports[i].opmode_ioaddr = ioaddress + 4;
-                       else
-                               brd->ports[i].opmode_ioaddr = ioaddress + 0x0c;
-               }
-               outb(0, ioaddress + 4); /* default set to RS232 mode */
-               outb(0, ioaddress + 0x0c);      /* default set to RS232 mode */
-       }
+       info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base);
+       info->timeout += HZ / 50;       /* Add .02 seconds of slop */
 
-       for (i = 0; i < brd->nports; i++) {
-               brd->vector_mask |= (1 << i);
-               brd->ports[i].baud_base = 921600;
+       if (quot) {
+               spin_lock_irqsave(&info->slock, flags);
+               info->MCR |= UART_MCR_DTR;
+               outb(info->MCR, info->ioaddr + UART_MCR);
+               spin_unlock_irqrestore(&info->slock, flags);
+       } else {
+               spin_lock_irqsave(&info->slock, flags);
+               info->MCR &= ~UART_MCR_DTR;
+               outb(info->MCR, info->ioaddr + UART_MCR);
+               spin_unlock_irqrestore(&info->slock, flags);
+               return ret;
        }
-       return 0;
-err_relio:
-       pci_release_region(pdev, 2);
-err:
-       return retval;
-}
-
-static int __init mxser_init(void)
-{
-       struct pci_dev *pdev = NULL;
-       struct mxser_board *brd;
-       unsigned int i, m;
-       int retval, b, n;
-
-       mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1);
-       if (!mxvar_sdriver)
-               return -ENOMEM;
-       spin_lock_init(&gm_lock);
 
-       for (i = 0; i < MXSER_BOARDS; i++)
-               mxser_boards[i].board_type = -1;
+       cval = inb(info->ioaddr + UART_LCR);
 
-       printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n",
-               MXSER_VERSION);
+       outb(cval | UART_LCR_DLAB, info->ioaddr + UART_LCR);    /* set DLAB */
 
-       /* Initialize the tty_driver structure */
-       mxvar_sdriver->magic = TTY_DRIVER_MAGIC;
-       mxvar_sdriver->name = "ttyM";
-       mxvar_sdriver->major = ttymajor;
-       mxvar_sdriver->minor_start = 0;
-       mxvar_sdriver->num = MXSER_PORTS + 1;
-       mxvar_sdriver->type = TTY_DRIVER_TYPE_SERIAL;
-       mxvar_sdriver->subtype = SERIAL_TYPE_NORMAL;
-       mxvar_sdriver->init_termios = tty_std_termios;
-       mxvar_sdriver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL;
-       mxvar_sdriver->flags = TTY_DRIVER_REAL_RAW;
-       tty_set_operations(mxvar_sdriver, &mxser_ops);
-       mxvar_sdriver->ttys = mxvar_tty;
-       mxvar_sdriver->termios = mxvar_termios;
-       mxvar_sdriver->termios_locked = mxvar_termios_locked;
+       outb(quot & 0xff, info->ioaddr + UART_DLL);     /* LS of divisor */
+       outb(quot >> 8, info->ioaddr + UART_DLM);       /* MS of divisor */
+       outb(cval, info->ioaddr + UART_LCR);    /* reset DLAB */
 
-       mxvar_diagflag = 0;
 
-       m = 0;
-       /* Start finding ISA boards here */
-       for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
-               int cap;
+       return ret;
+}
 
-               if (!(cap = mxserBoardCAP[b]))
-                       continue;
+/*
+ * This routine is called to set the UART divisor registers to match
+ * the specified baud rate for a serial port.
+ */
+static int mxser_change_speed(struct mxser_port *info,
+               struct termios *old_termios)
+{
+       unsigned cflag, cval, fcr;
+       int ret = 0;
+       unsigned char status;
+       long baud;
+       unsigned long flags;
 
-               brd = &mxser_boards[m];
-               retval = mxser_get_ISA_conf(cap, brd);
+       if (!info->tty || !info->tty->termios)
+               return ret;
+       cflag = info->tty->termios->c_cflag;
+       if (!(info->ioaddr))
+               return ret;
 
-               if (retval != 0)
-                       printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n",
-                               mxser_brdname[brd->board_type - 1], ioaddr[b]);
+#ifndef B921600
+#define B921600 (B460800 +1)
+#endif
+       if (mxser_set_baud_method[info->tty->index] == 0) {
+               baud = tty_get_baud_rate(info->tty);
+               mxser_set_baud(info, baud);
+       }
 
-               if (retval <= 0) {
-                       if (retval == MXSER_ERR_IRQ)
-                               printk(KERN_ERR "Invalid interrupt number, "
-                                       "board not configured\n");
-                       else if (retval == MXSER_ERR_IRQ_CONFLIT)
-                               printk(KERN_ERR "Invalid interrupt number, "
-                                       "board not configured\n");
-                       else if (retval == MXSER_ERR_VECTOR)
-                               printk(KERN_ERR "Invalid interrupt vector, "
-                                       "board not configured\n");
-                       else if (retval == MXSER_ERR_IOADDR)
-                               printk(KERN_ERR "Invalid I/O address, "
-                                       "board not configured\n");
+       /* byte size and parity */
+       switch (cflag & CSIZE) {
+       case CS5:
+               cval = 0x00;
+               break;
+       case CS6:
+               cval = 0x01;
+               break;
+       case CS7:
+               cval = 0x02;
+               break;
+       case CS8:
+               cval = 0x03;
+               break;
+       default:
+               cval = 0x00;
+               break;          /* too keep GCC shut... */
+       }
+       if (cflag & CSTOPB)
+               cval |= 0x04;
+       if (cflag & PARENB)
+               cval |= UART_LCR_PARITY;
+       if (!(cflag & PARODD))
+               cval |= UART_LCR_EPAR;
+       if (cflag & CMSPAR)
+               cval |= UART_LCR_SPAR;
 
-                       continue;
+       if ((info->type == PORT_8250) || (info->type == PORT_16450)) {
+               if (info->board->chip_flag) {
+                       fcr = UART_FCR_ENABLE_FIFO;
+                       fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
+                       SET_MOXA_MUST_FIFO_VALUE(info);
+               } else
+                       fcr = 0;
+       } else {
+               fcr = UART_FCR_ENABLE_FIFO;
+               /* following add by Victor Yu. 08-30-2002 */
+               if (info->board->chip_flag) {
+                       fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
+                       SET_MOXA_MUST_FIFO_VALUE(info);
+               } else {
+                       /* above add by Victor Yu. 08-30-2002 */
+                       switch (info->rx_trigger) {
+                       case 1:
+                               fcr |= UART_FCR_TRIGGER_1;
+                               break;
+                       case 4:
+                               fcr |= UART_FCR_TRIGGER_4;
+                               break;
+                       case 8:
+                               fcr |= UART_FCR_TRIGGER_8;
+                               break;
+                       default:
+                               fcr |= UART_FCR_TRIGGER_14;
+                               break;
+                       }
                }
-
-               brd->pdev = NULL;
-
-               /* mxser_initbrd will hook ISR. */
-               if (mxser_initbrd(brd) < 0)
-                       continue;
-
-               m++;
        }
 
-       /* Start finding ISA boards from module arg */
-       for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
-               unsigned long cap;
-
-               if (!(cap = ioaddr[b]))
-                       continue;
+       /* CTS flow control flag and modem status interrupts */
+       info->IER &= ~UART_IER_MSI;
+       info->MCR &= ~UART_MCR_AFE;
+       if (cflag & CRTSCTS) {
+               info->flags |= ASYNC_CTS_FLOW;
+               info->IER |= UART_IER_MSI;
+               if ((info->type == PORT_16550A) || (info->board->chip_flag)) {
+                       info->MCR |= UART_MCR_AFE;
+/*                     status = mxser_get_msr(info->ioaddr, 0, info->port); */
+/*
+       save_flags(flags);
+       cli();
+       status = inb(baseaddr + UART_MSR);
+       restore_flags(flags);
+*/
+                       /* mxser_check_modem_status(info, status); */
+               } else {
+/*                     status = mxser_get_msr(info->ioaddr, 0, info->port); */
+                       /* MX_LOCK(&info->slock); */
+                       status = inb(info->ioaddr + UART_MSR);
+                       /* MX_UNLOCK(&info->slock); */
+                       if (info->tty->hw_stopped) {
+                               if (status & UART_MSR_CTS) {
+                                       info->tty->hw_stopped = 0;
+                                       if (info->type != PORT_16550A &&
+                                                       !info->board->chip_flag) {
+                                               outb(info->IER & ~UART_IER_THRI,
+                                                       info->ioaddr +
+                                                       UART_IER);
+                                               info->IER |= UART_IER_THRI;
+                                               outb(info->IER, info->ioaddr +
+                                                               UART_IER);
+                                       }
+                                       set_bit(MXSER_EVENT_TXLOW, &info->event);
+                                       schedule_work(&info->tqueue);                           }
+                       } else {
+                               if (!(status & UART_MSR_CTS)) {
+                                       info->tty->hw_stopped = 1;
+                                       if ((info->type != PORT_16550A) &&
+                                                       (!info->board->chip_flag)) {
+                                               info->IER &= ~UART_IER_THRI;
+                                               outb(info->IER, info->ioaddr +
+                                                               UART_IER);
+                                       }
+                               }
+                       }
+               }
+       } else {
+               info->flags &= ~ASYNC_CTS_FLOW;
+       }
+       outb(info->MCR, info->ioaddr + UART_MCR);
+       if (cflag & CLOCAL) {
+               info->flags &= ~ASYNC_CHECK_CD;
+       } else {
+               info->flags |= ASYNC_CHECK_CD;
+               info->IER |= UART_IER_MSI;
+       }
+       outb(info->IER, info->ioaddr + UART_IER);
 
-               brd = &mxser_boards[m];
-               retval = mxser_get_ISA_conf(cap, &mxser_boards[m]);
+       /*
+        * Set up parity check flag
+        */
+       info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
+       if (I_INPCK(info->tty))
+               info->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
+       if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
+               info->read_status_mask |= UART_LSR_BI;
 
-               if (retval != 0)
-                       printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n",
-                               mxser_brdname[brd->board_type - 1], ioaddr[b]);
+       info->ignore_status_mask = 0;
 
-               if (retval <= 0) {
-                       if (retval == MXSER_ERR_IRQ)
-                               printk(KERN_ERR "Invalid interrupt number, "
-                                       "board not configured\n");
-                       else if (retval == MXSER_ERR_IRQ_CONFLIT)
-                               printk(KERN_ERR "Invalid interrupt number, "
-                                       "board not configured\n");
-                       else if (retval == MXSER_ERR_VECTOR)
-                               printk(KERN_ERR "Invalid interrupt vector, "
-                                       "board not configured\n");
-                       else if (retval == MXSER_ERR_IOADDR)
-                               printk(KERN_ERR "Invalid I/O address, "
-                                       "board not configured\n");
-
-                       continue;
+       if (I_IGNBRK(info->tty)) {
+               info->ignore_status_mask |= UART_LSR_BI;
+               info->read_status_mask |= UART_LSR_BI;
+               /*
+                * If we're ignore parity and break indicators, ignore
+                * overruns too.  (For real raw support).
+                */
+               if (I_IGNPAR(info->tty)) {
+                       info->ignore_status_mask |=
+                                               UART_LSR_OE |
+                                               UART_LSR_PE |
+                                               UART_LSR_FE;
+                       info->read_status_mask |=
+                                               UART_LSR_OE |
+                                               UART_LSR_PE |
+                                               UART_LSR_FE;
                }
-
-               brd->pdev = NULL;
-               /* mxser_initbrd will hook ISR. */
-               if (mxser_initbrd(brd) < 0)
-                       continue;
-
-               m++;
        }
-
-       /* start finding PCI board here */
-       n = ARRAY_SIZE(mxser_pcibrds) - 1;
-       b = 0;
-       while (b < n) {
-               pdev = pci_get_device(mxser_pcibrds[b].vendor,
-                               mxser_pcibrds[b].device, pdev);
-               if (pdev == NULL) {
-                       b++;
-                       continue;
+       /* following add by Victor Yu. 09-02-2002 */
+       if (info->board->chip_flag) {
+               spin_lock_irqsave(&info->slock, flags);
+               SET_MOXA_MUST_XON1_VALUE(info->ioaddr, START_CHAR(info->tty));
+               SET_MOXA_MUST_XOFF1_VALUE(info->ioaddr, STOP_CHAR(info->tty));
+               if (I_IXON(info->tty)) {
+                       ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
+               } else {
+                       DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
                }
-               printk(KERN_INFO "Found MOXA %s board(BusNo=%d,DevNo=%d)\n",
-                       mxser_brdname[(int) (mxser_pcibrds[b].driver_data) - 1],
-                       pdev->bus->number, PCI_SLOT(pdev->devfn));
-               if (m >= MXSER_BOARDS)
-                       printk(KERN_ERR
-                               "Too many Smartio/Industio family boards find "
-                               "(maximum %d), board not configured\n",
-                               MXSER_BOARDS);
-               else {
-                       if (pci_enable_device(pdev)) {
-                               printk(KERN_ERR "Moxa SmartI/O PCI enable "
-                                       "fail !\n");
-                               continue;
-                       }
-                       brd = &mxser_boards[m];
-                       brd->pdev = pdev;
-                       retval = mxser_get_PCI_conf(
-                                       (int)mxser_pcibrds[b].driver_data,
-                                       brd, pdev);
-                       if (retval < 0) {
-                               if (retval == MXSER_ERR_IRQ)
-                                       printk(KERN_ERR
-                                               "Invalid interrupt number, "
-                                               "board not configured\n");
-                               else if (retval == MXSER_ERR_IRQ_CONFLIT)
-                                       printk(KERN_ERR
-                                               "Invalid interrupt number, "
-                                               "board not configured\n");
-                               else if (retval == MXSER_ERR_VECTOR)
-                                       printk(KERN_ERR
-                                               "Invalid interrupt vector, "
-                                               "board not configured\n");
-                               else if (retval == MXSER_ERR_IOADDR)
-                                       printk(KERN_ERR
-                                               "Invalid I/O address, "
-                                               "board not configured\n");
-                               continue;
-                       }
-                       /* mxser_initbrd will hook ISR. */
-                       if (mxser_initbrd(brd) < 0)
-                               continue;
-                       m++;
-                       /* Keep an extra reference if we succeeded. It will
-                          be returned at unload time */
-                       pci_dev_get(pdev);
+               if (I_IXOFF(info->tty)) {
+                       ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
+               } else {
+                       DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
                }
+               /*
+                  if ( I_IXANY(info->tty) ) {
+                  info->MCR |= MOXA_MUST_MCR_XON_ANY;
+                  ENABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->ioaddr);
+                  } else {
+                  info->MCR &= ~MOXA_MUST_MCR_XON_ANY;
+                  DISABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->ioaddr);
+                  }
+                */
+               spin_unlock_irqrestore(&info->slock, flags);
        }
+       /* above add by Victor Yu. 09-02-2002 */
 
-       retval = tty_register_driver(mxvar_sdriver);
-       if (retval) {
-               printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family"
-                               " driver !\n");
-               put_tty_driver(mxvar_sdriver);
 
-               for (i = 0; i < MXSER_BOARDS; i++) {
-                       if (mxser_boards[i].board_type == -1)
-                               continue;
-                       else {
-                               free_irq(mxser_boards[i].irq, &mxser_boards[i]);
-                               /* todo: release io, vector */
-                       }
-               }
-               return retval;
-       }
+       outb(fcr, info->ioaddr + UART_FCR);     /* set fcr */
+       outb(cval, info->ioaddr + UART_LCR);
 
-       return 0;
+       return ret;
 }
 
-static void mxser_do_softint(void *private_)
+static void mxser_check_modem_status(struct mxser_port *port, int status)
 {
-       struct mxser_port *info = private_;
-       struct tty_struct *tty;
+       /* update input line counters */
+       if (status & UART_MSR_TERI)
+               port->icount.rng++;
+       if (status & UART_MSR_DDSR)
+               port->icount.dsr++;
+       if (status & UART_MSR_DDCD)
+               port->icount.dcd++;
+       if (status & UART_MSR_DCTS)
+               port->icount.cts++;
+       port->mon_data.modem_status = status;
+       wake_up_interruptible(&port->delta_msr_wait);
 
-       tty = info->tty;
+       if ((port->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
+               if (status & UART_MSR_DCD)
+                       wake_up_interruptible(&port->open_wait);
+               schedule_work(&port->tqueue);
+       }
 
-       if (test_and_clear_bit(MXSER_EVENT_TXLOW, &info->event))
-               tty_wakeup(tty);
-       if (test_and_clear_bit(MXSER_EVENT_HANGUP, &info->event))
-               tty_hangup(tty);
+       if (port->flags & ASYNC_CTS_FLOW) {
+               if (port->tty->hw_stopped) {
+                       if (status & UART_MSR_CTS) {
+                               port->tty->hw_stopped = 0;
+
+                               if ((port->type != PORT_16550A) &&
+                                               (!port->board->chip_flag)) {
+                                       outb(port->IER & ~UART_IER_THRI,
+                                               port->ioaddr + UART_IER);
+                                       port->IER |= UART_IER_THRI;
+                                       outb(port->IER, port->ioaddr +
+                                                       UART_IER);
+                               }
+                               set_bit(MXSER_EVENT_TXLOW, &port->event);
+                               schedule_work(&port->tqueue);
+                       }
+               } else {
+                       if (!(status & UART_MSR_CTS)) {
+                               port->tty->hw_stopped = 1;
+                               if (port->type != PORT_16550A &&
+                                               !port->board->chip_flag) {
+                                       port->IER &= ~UART_IER_THRI;
+                                       outb(port->IER, port->ioaddr +
+                                                       UART_IER);
+                               }
+                       }
+               }
+       }
 }
 
-static unsigned char mxser_get_msr(int baseaddr, int mode, int port)
+static int mxser_startup(struct mxser_port *info)
 {
-       unsigned char status = 0;
-
-       status = inb(baseaddr + UART_MSR);
-
-       mxser_msr[port] &= 0x0F;
-       mxser_msr[port] |= status;
-       status = mxser_msr[port];
-       if (mode)
-               mxser_msr[port] = 0;
+       unsigned long page;
+       unsigned long flags;
 
-       return status;
-}
+       page = __get_free_page(GFP_KERNEL);
+       if (!page)
+               return -ENOMEM;
 
-/*
- * This routine is called whenever a serial port is opened.  It
- * enables interrupts for a serial port, linking in its async structure into
- * the IRQ chain.   It also performs the serial-specific
- * initialization for the tty structure.
- */
-static int mxser_open(struct tty_struct *tty, struct file *filp)
-{
-       struct mxser_port *info;
-       int retval, line;
+       spin_lock_irqsave(&info->slock, flags);
 
-       /* initialize driver_data in case something fails */
-       tty->driver_data = NULL;
+       if (info->flags & ASYNC_INITIALIZED) {
+               free_page(page);
+               spin_unlock_irqrestore(&info->slock, flags);
+               return 0;
+       }
 
-       line = tty->index;
-       if (line == MXSER_PORTS)
+       if (!info->ioaddr || !info->type) {
+               if (info->tty)
+                       set_bit(TTY_IO_ERROR, &info->tty->flags);
+               free_page(page);
+               spin_unlock_irqrestore(&info->slock, flags);
                return 0;
-       if (line < 0 || line > MXSER_PORTS)
-               return -ENODEV;
-       info = &mxser_boards[line / MXSER_PORTS_PER_BOARD].ports[line % MXSER_PORTS_PER_BOARD];
-       if (!info->ioaddr)
-               return -ENODEV;
+       }
+       if (info->xmit_buf)
+               free_page(page);
+       else
+               info->xmit_buf = (unsigned char *) page;
 
-       tty->driver_data = info;
-       info->tty = tty;
        /*
-        * Start up serial port
+        * Clear the FIFO buffers and disable them
+        * (they will be reenabled in mxser_change_speed())
         */
-       info->count++;
-       retval = mxser_startup(info);
-       if (retval)
-               return retval;
-
-       retval = mxser_block_til_ready(tty, filp, info);
-       if (retval)
-               return retval;
-
-       if ((info->count == 1) && (info->flags & ASYNC_SPLIT_TERMIOS)) {
+       if (info->board->chip_flag)
+               outb((UART_FCR_CLEAR_RCVR |
+                       UART_FCR_CLEAR_XMIT |
+                       MOXA_MUST_FCR_GDA_MODE_ENABLE), info->ioaddr + UART_FCR);
+       else
+               outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT),
+                       info->ioaddr + UART_FCR);
+
+       /*
+        * At this point there's no way the LSR could still be 0xFF;
+        * if it is, then bail out, because there's likely no UART
+        * here.
+        */
+       if (inb(info->ioaddr + UART_LSR) == 0xff) {
+               spin_unlock_irqrestore(&info->slock, flags);
+               if (capable(CAP_SYS_ADMIN)) {
+                       if (info->tty)
+                               set_bit(TTY_IO_ERROR, &info->tty->flags);
+                       return 0;
+               } else
+                       return -ENODEV;
+       }
+
+       /*
+        * Clear the interrupt registers.
+        */
+       (void) inb(info->ioaddr + UART_LSR);
+       (void) inb(info->ioaddr + UART_RX);
+       (void) inb(info->ioaddr + UART_IIR);
+       (void) inb(info->ioaddr + UART_MSR);
+
+       /*
+        * Now, initialize the UART
+        */
+       outb(UART_LCR_WLEN8, info->ioaddr + UART_LCR);  /* reset DLAB */
+       info->MCR = UART_MCR_DTR | UART_MCR_RTS;
+       outb(info->MCR, info->ioaddr + UART_MCR);
+
+       /*
+        * Finally, enable interrupts
+        */
+       info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI;
+       /* info->IER = UART_IER_RLSI | UART_IER_RDI; */
+
+       /* following add by Victor Yu. 08-30-2002 */
+       if (info->board->chip_flag)
+               info->IER |= MOXA_MUST_IER_EGDAI;
+       /* above add by Victor Yu. 08-30-2002 */
+       outb(info->IER, info->ioaddr + UART_IER);       /* enable interrupts */
+
+       /*
+        * And clear the interrupt registers again for luck.
+        */
+       (void) inb(info->ioaddr + UART_LSR);
+       (void) inb(info->ioaddr + UART_RX);
+       (void) inb(info->ioaddr + UART_IIR);
+       (void) inb(info->ioaddr + UART_MSR);
+
+       if (info->tty)
+               clear_bit(TTY_IO_ERROR, &info->tty->flags);
+       info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
+
+       /*
+        * and set the speed of the serial port
+        */
+       spin_unlock_irqrestore(&info->slock, flags);
+       mxser_change_speed(info, NULL);
+
+       info->flags |= ASYNC_INITIALIZED;
+       return 0;
+}
+
+/*
+ * This routine will shutdown a serial port; interrupts maybe disabled, and
+ * DTR is dropped if the hangup on close termio flag is on.
+ */
+static void mxser_shutdown(struct mxser_port *info)
+{
+       unsigned long flags;
+
+       if (!(info->flags & ASYNC_INITIALIZED))
+               return;
+
+       spin_lock_irqsave(&info->slock, flags);
+
+       /*
+        * clear delta_msr_wait queue to avoid mem leaks: we may free the irq
+        * here so the queue might never be waken up
+        */
+       wake_up_interruptible(&info->delta_msr_wait);
+
+       /*
+        * Free the IRQ, if necessary
+        */
+       if (info->xmit_buf) {
+               free_page((unsigned long) info->xmit_buf);
+               info->xmit_buf = NULL;
+       }
+
+       info->IER = 0;
+       outb(0x00, info->ioaddr + UART_IER);
+
+       if (!info->tty || (info->tty->termios->c_cflag & HUPCL))
+               info->MCR &= ~(UART_MCR_DTR | UART_MCR_RTS);
+       outb(info->MCR, info->ioaddr + UART_MCR);
+
+       /* clear Rx/Tx FIFO's */
+       /* following add by Victor Yu. 08-30-2002 */
+       if (info->board->chip_flag)
+               outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT |
+                               MOXA_MUST_FCR_GDA_MODE_ENABLE,
+                               info->ioaddr + UART_FCR);
+       else
+               /* above add by Victor Yu. 08-30-2002 */
+               outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT,
+                       info->ioaddr + UART_FCR);
+
+       /* read data port to reset things */
+       (void) inb(info->ioaddr + UART_RX);
+
+       if (info->tty)
+               set_bit(TTY_IO_ERROR, &info->tty->flags);
+
+       info->flags &= ~ASYNC_INITIALIZED;
+
+       /* following add by Victor Yu. 09-23-2002 */
+       if (info->board->chip_flag)
+               SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->ioaddr);
+       /* above add by Victor Yu. 09-23-2002 */
+
+       spin_unlock_irqrestore(&info->slock, flags);
+}
+
+/*
+ * This routine is called whenever a serial port is opened.  It
+ * enables interrupts for a serial port, linking in its async structure into
+ * the IRQ chain.   It also performs the serial-specific
+ * initialization for the tty structure.
+ */
+static int mxser_open(struct tty_struct *tty, struct file *filp)
+{
+       struct mxser_port *info;
+       int retval, line;
+
+       /* initialize driver_data in case something fails */
+       tty->driver_data = NULL;
+
+       line = tty->index;
+       if (line == MXSER_PORTS)
+               return 0;
+       if (line < 0 || line > MXSER_PORTS)
+               return -ENODEV;
+       info = &mxser_boards[line / MXSER_PORTS_PER_BOARD].ports[line % MXSER_PORTS_PER_BOARD];
+       if (!info->ioaddr)
+               return -ENODEV;
+
+       tty->driver_data = info;
+       info->tty = tty;
+       /*
+        * Start up serial port
+        */
+       info->count++;
+       retval = mxser_startup(info);
+       if (retval)
+               return retval;
+
+       retval = mxser_block_til_ready(tty, filp, info);
+       if (retval)
+               return retval;
+
+       if ((info->count == 1) && (info->flags & ASYNC_SPLIT_TERMIOS)) {
                if (tty->driver->subtype == SERIAL_TYPE_NORMAL)
                        *tty->termios = info->normal_termios;
                else
@@ -1200,276 +1311,321 @@ static void mxser_flush_buffer(struct tty_struct *tty)
                (tty->ldisc.write_wakeup) (tty);
 }
 
-static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg)
+/*
+ * ------------------------------------------------------------
+ * friends of mxser_ioctl()
+ * ------------------------------------------------------------
+ */
+static int mxser_get_serial_info(struct mxser_port *info,
+               struct serial_struct __user *retinfo)
 {
-       struct mxser_port *info = tty->driver_data;
-       int retval;
-       struct async_icount cprev, cnow;        /* kernel counter temps */
-       struct serial_icounter_struct __user *p_cuser;
-       unsigned long templ;
-       unsigned long flags;
-       void __user *argp = (void __user *)arg;
+       struct serial_struct tmp;
 
-       if (tty->index == MXSER_PORTS)
-               return mxser_ioctl_special(cmd, argp);
+       if (!retinfo)
+               return -EFAULT;
+       memset(&tmp, 0, sizeof(tmp));
+       tmp.type = info->type;
+       tmp.line = info->tty->index;
+       tmp.port = info->ioaddr;
+       tmp.irq = info->board->irq;
+       tmp.flags = info->flags;
+       tmp.baud_base = info->baud_base;
+       tmp.close_delay = info->close_delay;
+       tmp.closing_wait = info->closing_wait;
+       tmp.custom_divisor = info->custom_divisor;
+       tmp.hub6 = 0;
+       if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+               return -EFAULT;
+       return 0;
+}
 
-       /* following add by Victor Yu. 01-05-2004 */
-       if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) {
-               int p;
-               unsigned long opmode;
-               static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f };
-               int shiftbit;
-               unsigned char val, mask;
+static int mxser_set_serial_info(struct mxser_port *info,
+               struct serial_struct __user *new_info)
+{
+       struct serial_struct new_serial;
+       unsigned int flags;
+       int retval = 0;
 
-               p = tty->index % 4;
-               if (cmd == MOXA_SET_OP_MODE) {
-                       if (get_user(opmode, (int __user *) argp))
-                               return -EFAULT;
-                       if (opmode != RS232_MODE &&
-                                       opmode != RS485_2WIRE_MODE &&
-                                       opmode != RS422_MODE &&
-                                       opmode != RS485_4WIRE_MODE)
-                               return -EFAULT;
-                       mask = ModeMask[p];
-                       shiftbit = p * 2;
-                       val = inb(info->opmode_ioaddr);
-                       val &= mask;
-                       val |= (opmode << shiftbit);
-                       outb(val, info->opmode_ioaddr);
-               } else {
-                       shiftbit = p * 2;
-                       opmode = inb(info->opmode_ioaddr) >> shiftbit;
-                       opmode &= OP_MODE_MASK;
-                       if (copy_to_user(argp, &opmode, sizeof(int)))
-                               return -EFAULT;
-               }
-               return 0;
-       }
-       /* above add by Victor Yu. 01-05-2004 */
+       if (!new_info || !info->ioaddr)
+               return -EFAULT;
+       if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
+               return -EFAULT;
 
-       if ((cmd != TIOCGSERIAL) && (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
-               if (tty->flags & (1 << TTY_IO_ERROR))
-                       return -EIO;
-       }
-       switch (cmd) {
-       case TCSBRK:            /* SVID version: non-zero arg --> no break */
-               retval = tty_check_change(tty);
-               if (retval)
-                       return retval;
-               tty_wait_until_sent(tty, 0);
-               if (!arg)
-                       mxser_send_break(info, HZ / 4); /* 1/4 second */
-               return 0;
-       case TCSBRKP:           /* support for POSIX tcsendbreak() */
-               retval = tty_check_change(tty);
-               if (retval)
-                       return retval;
-               tty_wait_until_sent(tty, 0);
-               mxser_send_break(info, arg ? arg * (HZ / 10) : HZ / 4);
-               return 0;
-       case TIOCGSOFTCAR:
-               return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp);
-       case TIOCSSOFTCAR:
-               if (get_user(templ, (unsigned long __user *) argp))
-                       return -EFAULT;
-               arg = templ;
-               tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0));
-               return 0;
-       case TIOCGSERIAL:
-               return mxser_get_serial_info(info, argp);
-       case TIOCSSERIAL:
-               return mxser_set_serial_info(info, argp);
-       case TIOCSERGETLSR:     /* Get line status register */
-               return mxser_get_lsr_info(info, argp);
-               /*
-                * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
-                * - mask passed in arg for lines of interest
-                *   (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
-                * Caller should use TIOCGICOUNT to see which one it was
-                */
-       case TIOCMIWAIT: {
-                       DECLARE_WAITQUEUE(wait, current);
-                       int ret;
-                       spin_lock_irqsave(&info->slock, flags);
-                       cprev = info->icount;   /* note the counters on entry */
-                       spin_unlock_irqrestore(&info->slock, flags);
+       if ((new_serial.irq != info->board->irq) ||
+                       (new_serial.port != info->ioaddr) ||
+                       (new_serial.custom_divisor != info->custom_divisor) ||
+                       (new_serial.baud_base != info->baud_base))
+               return -EPERM;
 
-                       add_wait_queue(&info->delta_msr_wait, &wait);
-                       while (1) {
-                               spin_lock_irqsave(&info->slock, flags);
-                               cnow = info->icount;    /* atomic copy */
-                               spin_unlock_irqrestore(&info->slock, flags);
-
-                               set_current_state(TASK_INTERRUPTIBLE);
-                               if (((arg & TIOCM_RNG) &&
-                                               (cnow.rng != cprev.rng)) ||
-                                               ((arg & TIOCM_DSR) &&
-                                               (cnow.dsr != cprev.dsr)) ||
-                                               ((arg & TIOCM_CD) &&
-                                               (cnow.dcd != cprev.dcd)) ||
-                                               ((arg & TIOCM_CTS) &&
-                                               (cnow.cts != cprev.cts))) {
-                                       ret = 0;
-                                       break;
-                               }
-                               /* see if a signal did it */
-                               if (signal_pending(current)) {
-                                       ret = -ERESTARTSYS;
-                                       break;
-                               }
-                               cprev = cnow;
-                       }
-                       current->state = TASK_RUNNING;
-                       remove_wait_queue(&info->delta_msr_wait, &wait);
-                       break;
-               }
-               /* NOTREACHED */
+       flags = info->flags & ASYNC_SPD_MASK;
+
+       if (!capable(CAP_SYS_ADMIN)) {
+               if ((new_serial.baud_base != info->baud_base) ||
+                               (new_serial.close_delay != info->close_delay) ||
+                               ((new_serial.flags & ~ASYNC_USR_MASK) != (info->flags & ~ASYNC_USR_MASK)))
+                       return -EPERM;
+               info->flags = ((info->flags & ~ASYNC_USR_MASK) |
+                               (new_serial.flags & ASYNC_USR_MASK));
+       } else {
                /*
-                * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
-                * Return: write counters to the user passed counter struct
-                * NB: both 1->0 and 0->1 transitions are counted except for
-                *     RI where only 0->1 is counted.
+                * OK, past this point, all the error checking has been done.
+                * At this point, we start making changes.....
                 */
-       case TIOCGICOUNT:
-               spin_lock_irqsave(&info->slock, flags);
-               cnow = info->icount;
-               spin_unlock_irqrestore(&info->slock, flags);
-               p_cuser = argp;
-               /* modified by casper 1/11/2000 */
-               if (put_user(cnow.frame, &p_cuser->frame))
-                       return -EFAULT;
-               if (put_user(cnow.brk, &p_cuser->brk))
-                       return -EFAULT;
-               if (put_user(cnow.overrun, &p_cuser->overrun))
-                       return -EFAULT;
-               if (put_user(cnow.buf_overrun, &p_cuser->buf_overrun))
-                       return -EFAULT;
-               if (put_user(cnow.parity, &p_cuser->parity))
-                       return -EFAULT;
-               if (put_user(cnow.rx, &p_cuser->rx))
-                       return -EFAULT;
-               if (put_user(cnow.tx, &p_cuser->tx))
-                       return -EFAULT;
-               put_user(cnow.cts, &p_cuser->cts);
-               put_user(cnow.dsr, &p_cuser->dsr);
-               put_user(cnow.rng, &p_cuser->rng);
-               put_user(cnow.dcd, &p_cuser->dcd);
-               return 0;
-       case MOXA_HighSpeedOn:
-               return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp);
-       case MOXA_SDS_RSTICOUNTER: {
-                       info->mon_data.rxcnt = 0;
-                       info->mon_data.txcnt = 0;
-                       return 0;
-               }
-/* (above) added by James. */
-       case MOXA_ASPP_SETBAUD:{
-                       long baud;
-                       if (get_user(baud, (long __user *)argp))
-                               return -EFAULT;
-                       mxser_set_baud(info, baud);
-                       return 0;
-               }
-       case MOXA_ASPP_GETBAUD:
-               if (copy_to_user(argp, &info->realbaud, sizeof(long)))
-                       return -EFAULT;
+               info->flags = ((info->flags & ~ASYNC_FLAGS) |
+                               (new_serial.flags & ASYNC_FLAGS));
+               info->close_delay = new_serial.close_delay * HZ / 100;
+               info->closing_wait = new_serial.closing_wait * HZ / 100;
+               info->tty->low_latency =
+                               (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+               info->tty->low_latency = 0;     /* (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; */
+       }
 
-               return 0;
+       /* added by casper, 3/17/2000, for mouse */
+       info->type = new_serial.type;
 
-       case MOXA_ASPP_OQUEUE:{
-                       int len, lsr;
+       process_txrx_fifo(info);
+
+       if (info->flags & ASYNC_INITIALIZED) {
+               if (flags != (info->flags & ASYNC_SPD_MASK))
+                       mxser_change_speed(info, NULL);
+       } else
+               retval = mxser_startup(info);
+
+       return retval;
+}
 
-                       len = mxser_chars_in_buffer(tty);
+/*
+ * mxser_get_lsr_info - get line status register info
+ *
+ * Purpose: Let user call ioctl() to get info when the UART physically
+ *         is emptied.  On bus types like RS485, the transmitter must
+ *         release the bus after transmitting. This must be done when
+ *         the transmit shift register is empty, not be done when the
+ *         transmit holding register is empty.  This functionality
+ *         allows an RS485 driver to be written in user space.
+ */
+static int mxser_get_lsr_info(struct mxser_port *info,
+               unsigned int __user *value)
+{
+       unsigned char status;
+       unsigned int result;
+       unsigned long flags;
 
-                       lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT;
+       spin_lock_irqsave(&info->slock, flags);
+       status = inb(info->ioaddr + UART_LSR);
+       spin_unlock_irqrestore(&info->slock, flags);
+       result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
+       return put_user(result, value);
+}
 
-                       len += (lsr ? 0 : 1);
+/*
+ * This routine sends a break character out the serial port.
+ */
+static void mxser_send_break(struct mxser_port *info, int duration)
+{
+       unsigned long flags;
 
-                       if (copy_to_user(argp, &len, sizeof(int)))
-                               return -EFAULT;
+       if (!info->ioaddr)
+               return;
+       set_current_state(TASK_INTERRUPTIBLE);
+       spin_lock_irqsave(&info->slock, flags);
+       outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC,
+               info->ioaddr + UART_LCR);
+       spin_unlock_irqrestore(&info->slock, flags);
+       schedule_timeout(duration);
+       spin_lock_irqsave(&info->slock, flags);
+       outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC,
+               info->ioaddr + UART_LCR);
+       spin_unlock_irqrestore(&info->slock, flags);
+}
 
-                       return 0;
-               }
-       case MOXA_ASPP_MON: {
-                       int mcr, status;
+static int mxser_tiocmget(struct tty_struct *tty, struct file *file)
+{
+       struct mxser_port *info = tty->driver_data;
+       unsigned char control, status;
+       unsigned long flags;
 
-                       /* info->mon_data.ser_param = tty->termios->c_cflag; */
 
-                       status = mxser_get_msr(info->ioaddr, 1, tty->index);
-                       mxser_check_modem_status(info, status);
+       if (tty->index == MXSER_PORTS)
+               return -ENOIOCTLCMD;
+       if (tty->flags & (1 << TTY_IO_ERROR))
+               return -EIO;
 
-                       mcr = inb(info->ioaddr + UART_MCR);
-                       if (mcr & MOXA_MUST_MCR_XON_FLAG)
-                               info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD;
-                       else
-                               info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFHOLD;
+       control = info->MCR;
 
-                       if (mcr & MOXA_MUST_MCR_TX_XON)
-                               info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFXENT;
-                       else
-                               info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFXENT;
+       spin_lock_irqsave(&info->slock, flags);
+       status = inb(info->ioaddr + UART_MSR);
+       if (status & UART_MSR_ANY_DELTA)
+               mxser_check_modem_status(info, status);
+       spin_unlock_irqrestore(&info->slock, flags);
+       return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) |
+                   ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) |
+                   ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) |
+                   ((status & UART_MSR_RI) ? TIOCM_RNG : 0) |
+                   ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) |
+                   ((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
+}
 
-                       if (info->tty->hw_stopped)
-                               info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD;
-                       else
-                               info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD;
+static int mxser_tiocmset(struct tty_struct *tty, struct file *file,
+               unsigned int set, unsigned int clear)
+{
+       struct mxser_port *info = tty->driver_data;
+       unsigned long flags;
 
-                       if (copy_to_user(argp, &info->mon_data,
-                                       sizeof(struct mxser_mon)))
-                               return -EFAULT;
 
-                       return 0;
-               }
+       if (tty->index == MXSER_PORTS)
+               return -ENOIOCTLCMD;
+       if (tty->flags & (1 << TTY_IO_ERROR))
+               return -EIO;
 
-       case MOXA_ASPP_LSTATUS: {
-                       if (copy_to_user(argp, &info->err_shadow,
-                                       sizeof(unsigned char)))
-                               return -EFAULT;
+       spin_lock_irqsave(&info->slock, flags);
 
-                       info->err_shadow = 0;
-                       return 0;
-               }
-       case MOXA_SET_BAUD_METHOD: {
-                       int method;
+       if (set & TIOCM_RTS)
+               info->MCR |= UART_MCR_RTS;
+       if (set & TIOCM_DTR)
+               info->MCR |= UART_MCR_DTR;
 
-                       if (get_user(method, (int __user *)argp))
-                               return -EFAULT;
-                       mxser_set_baud_method[tty->index] = method;
-                       if (copy_to_user(argp, &method, sizeof(int)))
-                               return -EFAULT;
+       if (clear & TIOCM_RTS)
+               info->MCR &= ~UART_MCR_RTS;
+       if (clear & TIOCM_DTR)
+               info->MCR &= ~UART_MCR_DTR;
 
-                       return 0;
-               }
-       default:
-               return -ENOIOCTLCMD;
-       }
+       outb(info->MCR, info->ioaddr + UART_MCR);
+       spin_unlock_irqrestore(&info->slock, flags);
        return 0;
 }
 
-#ifndef CMSPAR
-#define        CMSPAR 010000000000
-#endif
-
-static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
+static int mxser_program_mode(int port)
 {
-       struct mxser_port *port;
-       int result, status;
-       unsigned int i, j;
+       int id, i, j, n;
+       /* unsigned long flags; */
 
-       switch (cmd) {
-       case MOXA_GET_CONF:
-/*             if (copy_to_user(argp, mxsercfg,
-                               sizeof(struct mxser_hwconf) * 4))
-                       return -EFAULT;
-               return 0;*/
-               return -ENXIO;
-       case MOXA_GET_MAJOR:
-               if (copy_to_user(argp, &ttymajor, sizeof(int)))
-                       return -EFAULT;
-               return 0;
+       spin_lock(&gm_lock);
+       outb(0, port);
+       outb(0, port);
+       outb(0, port);
+       (void)inb(port);
+       (void)inb(port);
+       outb(0, port);
+       (void)inb(port);
+       /* restore_flags(flags); */
+       spin_unlock(&gm_lock);
 
-       case MOXA_GET_CUMAJOR:
-               if (copy_to_user(argp, &calloutmajor, sizeof(int)))
+       id = inb(port + 1) & 0x1F;
+       if ((id != C168_ASIC_ID) &&
+                       (id != C104_ASIC_ID) &&
+                       (id != C102_ASIC_ID) &&
+                       (id != CI132_ASIC_ID) &&
+                       (id != CI134_ASIC_ID) &&
+                       (id != CI104J_ASIC_ID))
+               return -1;
+       for (i = 0, j = 0; i < 4; i++) {
+               n = inb(port + 2);
+               if (n == 'M') {
+                       j = 1;
+               } else if ((j == 1) && (n == 1)) {
+                       j = 2;
+                       break;
+               } else
+                       j = 0;
+       }
+       if (j != 2)
+               id = -2;
+       return id;
+}
+
+static void mxser_normal_mode(int port)
+{
+       int i, n;
+
+       outb(0xA5, port + 1);
+       outb(0x80, port + 3);
+       outb(12, port + 0);     /* 9600 bps */
+       outb(0, port + 1);
+       outb(0x03, port + 3);   /* 8 data bits */
+       outb(0x13, port + 4);   /* loop back mode */
+       for (i = 0; i < 16; i++) {
+               n = inb(port + 5);
+               if ((n & 0x61) == 0x60)
+                       break;
+               if ((n & 1) == 1)
+                       (void)inb(port);
+       }
+       outb(0x00, port + 4);
+}
+
+#define CHIP_SK        0x01    /* Serial Data Clock  in Eprom */
+#define CHIP_DO        0x02    /* Serial Data Output in Eprom */
+#define CHIP_CS        0x04    /* Serial Chip Select in Eprom */
+#define CHIP_DI        0x08    /* Serial Data Input  in Eprom */
+#define EN_CCMD        0x000   /* Chip's command register     */
+#define EN0_RSARLO     0x008   /* Remote start address reg 0  */
+#define EN0_RSARHI     0x009   /* Remote start address reg 1  */
+#define EN0_RCNTLO     0x00A   /* Remote byte count reg WR    */
+#define EN0_RCNTHI     0x00B   /* Remote byte count reg WR    */
+#define EN0_DCFG       0x00E   /* Data configuration reg WR   */
+#define EN0_PORT       0x010   /* Rcv missed frame error counter RD */
+#define ENC_PAGE0      0x000   /* Select page 0 of chip registers   */
+#define ENC_PAGE3      0x0C0   /* Select page 3 of chip registers   */
+static int mxser_read_register(int port, unsigned short *regs)
+{
+       int i, k, value, id;
+       unsigned int j;
+
+       id = mxser_program_mode(port);
+       if (id < 0)
+               return id;
+       for (i = 0; i < 14; i++) {
+               k = (i & 0x3F) | 0x180;
+               for (j = 0x100; j > 0; j >>= 1) {
+                       outb(CHIP_CS, port);
+                       if (k & j) {
+                               outb(CHIP_CS | CHIP_DO, port);
+                               outb(CHIP_CS | CHIP_DO | CHIP_SK, port);        /* A? bit of read */
+                       } else {
+                               outb(CHIP_CS, port);
+                               outb(CHIP_CS | CHIP_SK, port);  /* A? bit of read */
+                       }
+               }
+               (void)inb(port);
+               value = 0;
+               for (k = 0, j = 0x8000; k < 16; k++, j >>= 1) {
+                       outb(CHIP_CS, port);
+                       outb(CHIP_CS | CHIP_SK, port);
+                       if (inb(port) & CHIP_DI)
+                               value |= j;
+               }
+               regs[i] = value;
+               outb(0, port);
+       }
+       mxser_normal_mode(port);
+       return id;
+}
+
+#ifndef CMSPAR
+#define        CMSPAR 010000000000
+#endif
+
+static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
+{
+       struct mxser_port *port;
+       int result, status;
+       unsigned int i, j;
+
+       switch (cmd) {
+       case MOXA_GET_CONF:
+/*             if (copy_to_user(argp, mxsercfg,
+                               sizeof(struct mxser_hwconf) * 4))
+                       return -EFAULT;
+               return 0;*/
+               return -ENXIO;
+       case MOXA_GET_MAJOR:
+               if (copy_to_user(argp, &ttymajor, sizeof(int)))
+                       return -EFAULT;
+               return 0;
+
+       case MOXA_GET_CUMAJOR:
+               if (copy_to_user(argp, &calloutmajor, sizeof(int)))
                        return -EFAULT;
                return 0;
 
@@ -1609,103 +1765,310 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
        return 0;
 }
 
-static void mxser_stoprx(struct tty_struct *tty)
+static int mxser_ioctl(struct tty_struct *tty, struct file *file,
+               unsigned int cmd, unsigned long arg)
 {
        struct mxser_port *info = tty->driver_data;
+       struct async_icount cprev, cnow;        /* kernel counter temps */
+       struct serial_icounter_struct __user *p_cuser;
+       unsigned long templ;
+       unsigned long flags;
+       void __user *argp = (void __user *)arg;
+       int retval;
 
-       info->ldisc_stop_rx = 1;
-       if (I_IXOFF(tty)) {
-               /* following add by Victor Yu. 09-02-2002 */
-               if (info->board->chip_flag) {
-                       info->IER &= ~MOXA_MUST_RECV_ISR;
-                       outb(info->IER, info->ioaddr + UART_IER);
-               } else if (!(info->flags & ASYNC_CLOSING)) {
-                       info->x_char = STOP_CHAR(tty);
-                       outb(0, info->ioaddr + UART_IER);
-                       info->IER |= UART_IER_THRI;
-                       outb(info->IER, info->ioaddr + UART_IER);
+       if (tty->index == MXSER_PORTS)
+               return mxser_ioctl_special(cmd, argp);
+
+       /* following add by Victor Yu. 01-05-2004 */
+       if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) {
+               int p;
+               unsigned long opmode;
+               static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f };
+               int shiftbit;
+               unsigned char val, mask;
+
+               p = tty->index % 4;
+               if (cmd == MOXA_SET_OP_MODE) {
+                       if (get_user(opmode, (int __user *) argp))
+                               return -EFAULT;
+                       if (opmode != RS232_MODE &&
+                                       opmode != RS485_2WIRE_MODE &&
+                                       opmode != RS422_MODE &&
+                                       opmode != RS485_4WIRE_MODE)
+                               return -EFAULT;
+                       mask = ModeMask[p];
+                       shiftbit = p * 2;
+                       val = inb(info->opmode_ioaddr);
+                       val &= mask;
+                       val |= (opmode << shiftbit);
+                       outb(val, info->opmode_ioaddr);
+               } else {
+                       shiftbit = p * 2;
+                       opmode = inb(info->opmode_ioaddr) >> shiftbit;
+                       opmode &= OP_MODE_MASK;
+                       if (copy_to_user(argp, &opmode, sizeof(int)))
+                               return -EFAULT;
                }
+               return 0;
        }
+       /* above add by Victor Yu. 01-05-2004 */
 
-       if (info->tty->termios->c_cflag & CRTSCTS) {
-               info->MCR &= ~UART_MCR_RTS;
-               outb(info->MCR, info->ioaddr + UART_MCR);
+       if ((cmd != TIOCGSERIAL) && (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
+               if (tty->flags & (1 << TTY_IO_ERROR))
+                       return -EIO;
        }
-}
+       switch (cmd) {
+       case TCSBRK:            /* SVID version: non-zero arg --> no break */
+               retval = tty_check_change(tty);
+               if (retval)
+                       return retval;
+               tty_wait_until_sent(tty, 0);
+               if (!arg)
+                       mxser_send_break(info, HZ / 4); /* 1/4 second */
+               return 0;
+       case TCSBRKP:           /* support for POSIX tcsendbreak() */
+               retval = tty_check_change(tty);
+               if (retval)
+                       return retval;
+               tty_wait_until_sent(tty, 0);
+               mxser_send_break(info, arg ? arg * (HZ / 10) : HZ / 4);
+               return 0;
+       case TIOCGSOFTCAR:
+               return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp);
+       case TIOCSSOFTCAR:
+               if (get_user(templ, (unsigned long __user *) argp))
+                       return -EFAULT;
+               arg = templ;
+               tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0));
+               return 0;
+       case TIOCGSERIAL:
+               return mxser_get_serial_info(info, argp);
+       case TIOCSSERIAL:
+               return mxser_set_serial_info(info, argp);
+       case TIOCSERGETLSR:     /* Get line status register */
+               return mxser_get_lsr_info(info, argp);
+               /*
+                * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
+                * - mask passed in arg for lines of interest
+                *   (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
+                * Caller should use TIOCGICOUNT to see which one it was
+                */
+       case TIOCMIWAIT: {
+               DECLARE_WAITQUEUE(wait, current);
+               int ret;
+               spin_lock_irqsave(&info->slock, flags);
+               cprev = info->icount;   /* note the counters on entry */
+               spin_unlock_irqrestore(&info->slock, flags);
 
-static void mxser_startrx(struct tty_struct *tty)
-{
-       struct mxser_port *info = tty->driver_data;
+               add_wait_queue(&info->delta_msr_wait, &wait);
+               while (1) {
+                       spin_lock_irqsave(&info->slock, flags);
+                       cnow = info->icount;    /* atomic copy */
+                       spin_unlock_irqrestore(&info->slock, flags);
 
-       info->ldisc_stop_rx = 0;
-       if (I_IXOFF(tty)) {
-               if (info->x_char)
-                       info->x_char = 0;
-               else {
-                       /* following add by Victor Yu. 09-02-2002 */
-                       if (info->board->chip_flag) {
-                               info->IER |= MOXA_MUST_RECV_ISR;
-                               outb(info->IER, info->ioaddr + UART_IER);
-                       } else if (!(info->flags & ASYNC_CLOSING)) {
-                               info->x_char = START_CHAR(tty);
-                               outb(0, info->ioaddr + UART_IER);
-                               info->IER |= UART_IER_THRI;
-                               outb(info->IER, info->ioaddr + UART_IER);
+                       set_current_state(TASK_INTERRUPTIBLE);
+                       if (((arg & TIOCM_RNG) &&
+                                       (cnow.rng != cprev.rng)) ||
+                                       ((arg & TIOCM_DSR) &&
+                                       (cnow.dsr != cprev.dsr)) ||
+                                       ((arg & TIOCM_CD) &&
+                                       (cnow.dcd != cprev.dcd)) ||
+                                       ((arg & TIOCM_CTS) &&
+                                       (cnow.cts != cprev.cts))) {
+                               ret = 0;
+                               break;
                        }
+                       /* see if a signal did it */
+                       if (signal_pending(current)) {
+                               ret = -ERESTARTSYS;
+                               break;
+                       }
+                       cprev = cnow;
                }
+               current->state = TASK_RUNNING;
+               remove_wait_queue(&info->delta_msr_wait, &wait);
+               break;
        }
+       /* NOTREACHED */
+       /*
+        * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
+        * Return: write counters to the user passed counter struct
+        * NB: both 1->0 and 0->1 transitions are counted except for
+        *     RI where only 0->1 is counted.
+        */
+       case TIOCGICOUNT:
+               spin_lock_irqsave(&info->slock, flags);
+               cnow = info->icount;
+               spin_unlock_irqrestore(&info->slock, flags);
+               p_cuser = argp;
+               /* modified by casper 1/11/2000 */
+               if (put_user(cnow.frame, &p_cuser->frame))
+                       return -EFAULT;
+               if (put_user(cnow.brk, &p_cuser->brk))
+                       return -EFAULT;
+               if (put_user(cnow.overrun, &p_cuser->overrun))
+                       return -EFAULT;
+               if (put_user(cnow.buf_overrun, &p_cuser->buf_overrun))
+                       return -EFAULT;
+               if (put_user(cnow.parity, &p_cuser->parity))
+                       return -EFAULT;
+               if (put_user(cnow.rx, &p_cuser->rx))
+                       return -EFAULT;
+               if (put_user(cnow.tx, &p_cuser->tx))
+                       return -EFAULT;
+               put_user(cnow.cts, &p_cuser->cts);
+               put_user(cnow.dsr, &p_cuser->dsr);
+               put_user(cnow.rng, &p_cuser->rng);
+               put_user(cnow.dcd, &p_cuser->dcd);
+               return 0;
+       case MOXA_HighSpeedOn:
+               return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp);
+       case MOXA_SDS_RSTICOUNTER:
+               info->mon_data.rxcnt = 0;
+               info->mon_data.txcnt = 0;
+               return 0;
+/* (above) added by James. */
+       case MOXA_ASPP_SETBAUD:{
+               long baud;
+               if (get_user(baud, (long __user *)argp))
+                       return -EFAULT;
+               mxser_set_baud(info, baud);
+               return 0;
+       }
+       case MOXA_ASPP_GETBAUD:
+               if (copy_to_user(argp, &info->realbaud, sizeof(long)))
+                       return -EFAULT;
 
-       if (info->tty->termios->c_cflag & CRTSCTS) {
-               info->MCR |= UART_MCR_RTS;
-               outb(info->MCR, info->ioaddr + UART_MCR);
-       }
-}
-
-/*
- * This routine is called by the upper-layer tty layer to signal that
- * incoming characters should be throttled.
- */
-static void mxser_throttle(struct tty_struct *tty)
-{
-       mxser_stoprx(tty);
-}
-
-static void mxser_unthrottle(struct tty_struct *tty)
-{
-       mxser_startrx(tty);
-}
-
-static void mxser_set_termios(struct tty_struct *tty, struct termios *old_termios)
-{
-       struct mxser_port *info = tty->driver_data;
-       unsigned long flags;
-
-       if ((tty->termios->c_cflag != old_termios->c_cflag) ||
-                       (RELEVANT_IFLAG(tty->termios->c_iflag) != RELEVANT_IFLAG(old_termios->c_iflag))) {
+               return 0;
 
-               mxser_change_speed(info, old_termios);
+       case MOXA_ASPP_OQUEUE:{
+               int len, lsr;
 
-               if ((old_termios->c_cflag & CRTSCTS) &&
-                               !(tty->termios->c_cflag & CRTSCTS)) {
-                       tty->hw_stopped = 0;
-                       mxser_start(tty);
-               }
+               len = mxser_chars_in_buffer(tty);
+
+               lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT;
+
+               len += (lsr ? 0 : 1);
+
+               if (copy_to_user(argp, &len, sizeof(int)))
+                       return -EFAULT;
+
+               return 0;
        }
+       case MOXA_ASPP_MON: {
+               int mcr, status;
 
-/* Handle sw stopped */
-       if ((old_termios->c_iflag & IXON) &&
-                       !(tty->termios->c_iflag & IXON)) {
-               tty->stopped = 0;
+               /* info->mon_data.ser_param = tty->termios->c_cflag; */
+
+               status = mxser_get_msr(info->ioaddr, 1, tty->index);
+               mxser_check_modem_status(info, status);
+
+               mcr = inb(info->ioaddr + UART_MCR);
+               if (mcr & MOXA_MUST_MCR_XON_FLAG)
+                       info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD;
+               else
+                       info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFHOLD;
+
+               if (mcr & MOXA_MUST_MCR_TX_XON)
+                       info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFXENT;
+               else
+                       info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFXENT;
+
+               if (info->tty->hw_stopped)
+                       info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD;
+               else
+                       info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD;
+
+               if (copy_to_user(argp, &info->mon_data,
+                               sizeof(struct mxser_mon)))
+                       return -EFAULT;
+
+               return 0;
+       }
+       case MOXA_ASPP_LSTATUS: {
+               if (copy_to_user(argp, &info->err_shadow,
+                               sizeof(unsigned char)))
+                       return -EFAULT;
+
+               info->err_shadow = 0;
+               return 0;
+       }
+       case MOXA_SET_BAUD_METHOD: {
+               int method;
+
+               if (get_user(method, (int __user *)argp))
+                       return -EFAULT;
+               mxser_set_baud_method[tty->index] = method;
+               if (copy_to_user(argp, &method, sizeof(int)))
+                       return -EFAULT;
+
+               return 0;
+       }
+       default:
+               return -ENOIOCTLCMD;
+       }
+       return 0;
+}
+
+static void mxser_stoprx(struct tty_struct *tty)
+{
+       struct mxser_port *info = tty->driver_data;
 
+       info->ldisc_stop_rx = 1;
+       if (I_IXOFF(tty)) {
                /* following add by Victor Yu. 09-02-2002 */
                if (info->board->chip_flag) {
-                       spin_lock_irqsave(&info->slock, flags);
-                       DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
-                       spin_unlock_irqrestore(&info->slock, flags);
+                       info->IER &= ~MOXA_MUST_RECV_ISR;
+                       outb(info->IER, info->ioaddr + UART_IER);
+               } else if (!(info->flags & ASYNC_CLOSING)) {
+                       info->x_char = STOP_CHAR(tty);
+                       outb(0, info->ioaddr + UART_IER);
+                       info->IER |= UART_IER_THRI;
+                       outb(info->IER, info->ioaddr + UART_IER);
                }
-               /* above add by Victor Yu. 09-02-2002 */
+       }
 
-               mxser_start(tty);
+       if (info->tty->termios->c_cflag & CRTSCTS) {
+               info->MCR &= ~UART_MCR_RTS;
+               outb(info->MCR, info->ioaddr + UART_MCR);
+       }
+}
+
+/*
+ * This routine is called by the upper-layer tty layer to signal that
+ * incoming characters should be throttled.
+ */
+static void mxser_throttle(struct tty_struct *tty)
+{
+       mxser_stoprx(tty);
+}
+
+static void mxser_unthrottle(struct tty_struct *tty)
+{
+       struct mxser_port *info = tty->driver_data;
+
+       /* startrx */
+       info->ldisc_stop_rx = 0;
+       if (I_IXOFF(tty)) {
+               if (info->x_char)
+                       info->x_char = 0;
+               else {
+                       /* following add by Victor Yu. 09-02-2002 */
+                       if (info->board->chip_flag) {
+                               info->IER |= MOXA_MUST_RECV_ISR;
+                               outb(info->IER, info->ioaddr + UART_IER);
+                       } else if (!(info->flags & ASYNC_CLOSING)) {
+                               info->x_char = START_CHAR(tty);
+                               outb(0, info->ioaddr + UART_IER);
+                               info->IER |= UART_IER_THRI;
+                               outb(info->IER, info->ioaddr + UART_IER);
+                       }
+               }
+       }
+
+       if (info->tty->termios->c_cflag & CRTSCTS) {
+               info->MCR |= UART_MCR_RTS;
+               outb(info->MCR, info->ioaddr + UART_MCR);
        }
 }
 
@@ -1743,6 +2106,40 @@ static void mxser_start(struct tty_struct *tty)
        spin_unlock_irqrestore(&info->slock, flags);
 }
 
+static void mxser_set_termios(struct tty_struct *tty, struct termios *old_termios)
+{
+       struct mxser_port *info = tty->driver_data;
+       unsigned long flags;
+
+       if ((tty->termios->c_cflag != old_termios->c_cflag) ||
+                       (RELEVANT_IFLAG(tty->termios->c_iflag) != RELEVANT_IFLAG(old_termios->c_iflag))) {
+
+               mxser_change_speed(info, old_termios);
+
+               if ((old_termios->c_cflag & CRTSCTS) &&
+                               !(tty->termios->c_cflag & CRTSCTS)) {
+                       tty->hw_stopped = 0;
+                       mxser_start(tty);
+               }
+       }
+
+/* Handle sw stopped */
+       if ((old_termios->c_iflag & IXON) &&
+                       !(tty->termios->c_iflag & IXON)) {
+               tty->stopped = 0;
+
+               /* following add by Victor Yu. 09-02-2002 */
+               if (info->board->chip_flag) {
+                       spin_lock_irqsave(&info->slock, flags);
+                       DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
+                       spin_unlock_irqrestore(&info->slock, flags);
+               }
+               /* above add by Victor Yu. 09-02-2002 */
+
+               mxser_start(tty);
+       }
+}
+
 /*
  * mxser_wait_until_sent() --- wait until the transmitter is empty
  */
@@ -1803,1096 +2200,438 @@ static void mxser_wait_until_sent(struct tty_struct *tty, int timeout)
 
 #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
        printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies);
-#endif
-}
-
-
-/*
- * This routine is called by tty_hangup() when a hangup is signaled.
- */
-void mxser_hangup(struct tty_struct *tty)
-{
-       struct mxser_port *info = tty->driver_data;
-
-       mxser_flush_buffer(tty);
-       mxser_shutdown(info);
-       info->event = 0;
-       info->count = 0;
-       info->flags &= ~ASYNC_NORMAL_ACTIVE;
-       info->tty = NULL;
-       wake_up_interruptible(&info->open_wait);
-}
-
-
-/* added by James 03-12-2004. */
-/*
- * mxser_rs_break() --- routine which turns the break handling on or off
- */
-static void mxser_rs_break(struct tty_struct *tty, int break_state)
-{
-       struct mxser_port *info = tty->driver_data;
-       unsigned long flags;
-
-       spin_lock_irqsave(&info->slock, flags);
-       if (break_state == -1)
-               outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC,
-                       info->ioaddr + UART_LCR);
-       else
-               outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC,
-                       info->ioaddr + UART_LCR);
-       spin_unlock_irqrestore(&info->slock, flags);
-}
-
-/* (above) added by James. */
-
-
-/*
- * This is the serial driver's generic interrupt routine
- */
-static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
-       int status, iir, i;
-       struct mxser_board *brd = NULL;
-       struct mxser_port *port;
-       int max, irqbits, bits, msr;
-       int pass_counter = 0;
-       unsigned int int_cnt;
-       int handled = IRQ_NONE;
-
-       /* spin_lock(&gm_lock); */
-
-       for (i = 0; i < MXSER_BOARDS; i++)
-               if (dev_id == &mxser_boards[i]) {
-                       brd = dev_id;
-                       break;
-               }
-
-       if (i == MXSER_BOARDS)
-               goto irq_stop;
-       if (brd == NULL)
-               goto irq_stop;
-       max = mxser_numports[brd->board_type - 1];
-       while (1) {
-               irqbits = inb(brd->vector) & brd->vector_mask;
-               if (irqbits == brd->vector_mask)
-                       break;
-
-               handled = IRQ_HANDLED;
-               for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) {
-                       if (irqbits == brd->vector_mask)
-                               break;
-                       if (bits & irqbits)
-                               continue;
-                       port = &brd->ports[i];
-
-                       int_cnt = 0;
-                       do {
-                               /* following add by Victor Yu. 09-13-2002 */
-                               iir = inb(port->ioaddr + UART_IIR);
-                               if (iir & UART_IIR_NO_INT)
-                                       break;
-                               iir &= MOXA_MUST_IIR_MASK;
-                               if (!port->tty) {
-                                       status = inb(port->ioaddr + UART_LSR);
-                                       outb(0x27, port->ioaddr + UART_FCR);
-                                       inb(port->ioaddr + UART_MSR);
-                                       break;
-                               }
-                               /* above add by Victor Yu. 09-13-2002 */
-
-                               /* following add by Victor Yu. 09-02-2002 */
-                               status = inb(port->ioaddr + UART_LSR);
-
-                               if (status & UART_LSR_PE)
-                                       port->err_shadow |= NPPI_NOTIFY_PARITY;
-                               if (status & UART_LSR_FE)
-                                       port->err_shadow |= NPPI_NOTIFY_FRAMING;
-                               if (status & UART_LSR_OE)
-                                       port->err_shadow |=
-                                               NPPI_NOTIFY_HW_OVERRUN;
-                               if (status & UART_LSR_BI)
-                                       port->err_shadow |= NPPI_NOTIFY_BREAK;
-
-                               if (port->board->chip_flag) {
-                                       /*
-                                          if ( (status & 0x02) && !(status & 0x01) ) {
-                                          outb(port->ioaddr+UART_FCR,  0x23);
-                                          continue;
-                                          }
-                                        */
-                                       if (iir == MOXA_MUST_IIR_GDA ||
-                                           iir == MOXA_MUST_IIR_RDA ||
-                                           iir == MOXA_MUST_IIR_RTO ||
-                                           iir == MOXA_MUST_IIR_LSR)
-                                               mxser_receive_chars(port,
-                                                               &status);
-
-                               } else {
-                                       /* above add by Victor Yu. 09-02-2002 */
-
-                                       status &= port->read_status_mask;
-                                       if (status & UART_LSR_DR)
-                                               mxser_receive_chars(port,
-                                                               &status);
-                               }
-                               msr = inb(port->ioaddr + UART_MSR);
-                               if (msr & UART_MSR_ANY_DELTA)
-                                       mxser_check_modem_status(port, msr);
-
-                               /* following add by Victor Yu. 09-13-2002 */
-                               if (port->board->chip_flag) {
-                                       if (iir == 0x02 && (status &
-                                                               UART_LSR_THRE))
-                                               mxser_transmit_chars(port);
-                               } else {
-                                       /* above add by Victor Yu. 09-13-2002 */
-
-                                       if (status & UART_LSR_THRE)
-                                               mxser_transmit_chars(port);
-                               }
-                       } while (int_cnt++ < MXSER_ISR_PASS_LIMIT);
-               }
-               if (pass_counter++ > MXSER_ISR_PASS_LIMIT)
-                       break;  /* Prevent infinite loops */
-       }
-
-      irq_stop:
-       /* spin_unlock(&gm_lock); */
-       return handled;
-}
-
-static void mxser_receive_chars(struct mxser_port *port, int *status)
-{
-       struct tty_struct *tty = port->tty;
-       unsigned char ch, gdl;
-       int ignored = 0;
-       int cnt = 0;
-       int recv_room;
-       int max = 256;
-       unsigned long flags;
-
-       spin_lock_irqsave(&port->slock, flags);
-
-       recv_room = tty->receive_room;
-       if ((recv_room == 0) && (!port->ldisc_stop_rx)) {
-               /* mxser_throttle(tty); */
-               mxser_stoprx(tty);
-               /* return; */
-       }
-
-       /* following add by Victor Yu. 09-02-2002 */
-       if (port->board->chip_flag != MOXA_OTHER_UART) {
-
-               if (*status & UART_LSR_SPECIAL)
-                       goto intr_old;
-               /* following add by Victor Yu. 02-11-2004 */
-               if (port->board->chip_flag == MOXA_MUST_MU860_HWID &&
-                               (*status & MOXA_MUST_LSR_RERR))
-                       goto intr_old;
-               /* above add by Victor Yu. 02-14-2004 */
-               if (*status & MOXA_MUST_LSR_RERR)
-                       goto intr_old;
-
-               gdl = inb(port->ioaddr + MOXA_MUST_GDL_REGISTER);
-
-               /* add by Victor Yu. 02-11-2004 */
-               if (port->board->chip_flag == MOXA_MUST_MU150_HWID)
-                       gdl &= MOXA_MUST_GDL_MASK;
-               if (gdl >= recv_room) {
-                       if (!port->ldisc_stop_rx) {
-                               /* mxser_throttle(tty); */
-                               mxser_stoprx(tty);
-                       }
-                       /* return; */
-               }
-               while (gdl--) {
-                       ch = inb(port->ioaddr + UART_RX);
-                       tty_insert_flip_char(tty, ch, 0);
-                       cnt++;
-               }
-               goto end_intr;
-       }
- intr_old:
-       /* above add by Victor Yu. 09-02-2002 */
-
-       do {
-               if (max-- < 0)
-                       break;
-
-               ch = inb(port->ioaddr + UART_RX);
-               /* following add by Victor Yu. 09-02-2002 */
-               if (port->board->chip_flag && (*status & UART_LSR_OE)
-                               /*&& !(*status&UART_LSR_DR) */)
-                       outb(0x23, port->ioaddr + UART_FCR);
-               *status &= port->read_status_mask;
-               /* above add by Victor Yu. 09-02-2002 */
-               if (*status & port->ignore_status_mask) {
-                       if (++ignored > 100)
-                               break;
-               } else {
-                       char flag = 0;
-                       if (*status & UART_LSR_SPECIAL) {
-                               if (*status & UART_LSR_BI) {
-                                       flag = TTY_BREAK;
-/* added by casper 1/11/2000 */
-                                       port->icount.brk++;
-
-                                       if (port->flags & ASYNC_SAK)
-                                               do_SAK(tty);
-                               } else if (*status & UART_LSR_PE) {
-                                       flag = TTY_PARITY;
-/* added by casper 1/11/2000 */
-                                       port->icount.parity++;
-                               } else if (*status & UART_LSR_FE) {
-                                       flag = TTY_FRAME;
-/* added by casper 1/11/2000 */
-                                       port->icount.frame++;
-                               } else if (*status & UART_LSR_OE) {
-                                       flag = TTY_OVERRUN;
-/* added by casper 1/11/2000 */
-                                       port->icount.overrun++;
-                               } else
-                                       flags = TTY_BREAK;
-                       } else
-                               flags = 0;
-                       tty_insert_flip_char(tty, ch, flag);
-                       cnt++;
-                       if (cnt >= recv_room) {
-                               if (!port->ldisc_stop_rx) {
-                                       /* mxser_throttle(tty); */
-                                       mxser_stoprx(tty);
-                               }
-                               break;
-                       }
-
-               }
-
-               /* following add by Victor Yu. 09-02-2002 */
-               if (port->board->chip_flag)
-                       break;
-
-               /* mask by Victor Yu. 09-02-2002
-                *status = inb(port->ioaddr + UART_LSR) & port->read_status_mask;
-                */
-               /* following add by Victor Yu. 09-02-2002 */
-               *status = inb(port->ioaddr + UART_LSR);
-               /* above add by Victor Yu. 09-02-2002 */
-       } while (*status & UART_LSR_DR);
-
-end_intr:              /* add by Victor Yu. 09-02-2002 */
-       mxvar_log.rxcnt[port->tty->index] += cnt;
-       port->mon_data.rxcnt += cnt;
-       port->mon_data.up_rxcnt += cnt;
-       spin_unlock_irqrestore(&port->slock, flags);
-
-       tty_flip_buffer_push(tty);
-}
-
-static void mxser_transmit_chars(struct mxser_port *port)
-{
-       int count, cnt;
-       unsigned long flags;
-
-       spin_lock_irqsave(&port->slock, flags);
-
-       if (port->x_char) {
-               outb(port->x_char, port->ioaddr + UART_TX);
-               port->x_char = 0;
-               mxvar_log.txcnt[port->tty->index]++;
-               port->mon_data.txcnt++;
-               port->mon_data.up_txcnt++;
-
-/* added by casper 1/11/2000 */
-               port->icount.tx++;
-               goto unlock;
-       }
-
-       if (port->xmit_buf == 0)
-               goto unlock;
-
-       if (port->xmit_cnt == 0) {
-               if (port->xmit_cnt < WAKEUP_CHARS) { /* XXX what's this for?? */
-                       set_bit(MXSER_EVENT_TXLOW, &port->event);
-                       schedule_work(&port->tqueue);
-               }
-               goto unlock;
-       }
-       if (port->tty->stopped || (port->tty->hw_stopped &&
-                       (port->type != PORT_16550A) &&
-                       (!port->board->chip_flag))) {
-               port->IER &= ~UART_IER_THRI;
-               outb(port->IER, port->ioaddr + UART_IER);
-               goto unlock;
-       }
-
-       cnt = port->xmit_cnt;
-       count = port->xmit_fifo_size;
-       do {
-               outb(port->xmit_buf[port->xmit_tail++],
-                       port->ioaddr + UART_TX);
-               port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE - 1);
-               if (--port->xmit_cnt <= 0)
-                       break;
-       } while (--count > 0);
-       mxvar_log.txcnt[port->tty->index] += (cnt - port->xmit_cnt);
-
-/* added by James 03-12-2004. */
-       port->mon_data.txcnt += (cnt - port->xmit_cnt);
-       port->mon_data.up_txcnt += (cnt - port->xmit_cnt);
-
-/* added by casper 1/11/2000 */
-       port->icount.tx += (cnt - port->xmit_cnt);
-
-       if (port->xmit_cnt < WAKEUP_CHARS) {
-               set_bit(MXSER_EVENT_TXLOW, &port->event);
-               schedule_work(&port->tqueue);
-       }
-       if (port->xmit_cnt <= 0) {
-               port->IER &= ~UART_IER_THRI;
-               outb(port->IER, port->ioaddr + UART_IER);
-       }
-unlock:
-       spin_unlock_irqrestore(&port->slock, flags);
-}
-
-static void mxser_check_modem_status(struct mxser_port *port, int status)
-{
-       /* update input line counters */
-       if (status & UART_MSR_TERI)
-               port->icount.rng++;
-       if (status & UART_MSR_DDSR)
-               port->icount.dsr++;
-       if (status & UART_MSR_DDCD)
-               port->icount.dcd++;
-       if (status & UART_MSR_DCTS)
-               port->icount.cts++;
-       port->mon_data.modem_status = status;
-       wake_up_interruptible(&port->delta_msr_wait);
-
-       if ((port->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
-               if (status & UART_MSR_DCD)
-                       wake_up_interruptible(&port->open_wait);
-               schedule_work(&port->tqueue);
-       }
-
-       if (port->flags & ASYNC_CTS_FLOW) {
-               if (port->tty->hw_stopped) {
-                       if (status & UART_MSR_CTS) {
-                               port->tty->hw_stopped = 0;
-
-                               if ((port->type != PORT_16550A) &&
-                                               (!port->board->chip_flag)) {
-                                       outb(port->IER & ~UART_IER_THRI,
-                                               port->ioaddr + UART_IER);
-                                       port->IER |= UART_IER_THRI;
-                                       outb(port->IER, port->ioaddr +
-                                                       UART_IER);
-                               }
-                               set_bit(MXSER_EVENT_TXLOW, &port->event);
-                               schedule_work(&port->tqueue);
-                       }
-               } else {
-                       if (!(status & UART_MSR_CTS)) {
-                               port->tty->hw_stopped = 1;
-                               if (port->type != PORT_16550A &&
-                                               !port->board->chip_flag) {
-                                       port->IER &= ~UART_IER_THRI;
-                                       outb(port->IER, port->ioaddr +
-                                                       UART_IER);
-                               }
-                       }
-               }
-       }
-}
-
-static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp, struct mxser_port *port)
-{
-       DECLARE_WAITQUEUE(wait, current);
-       int retval;
-       int do_clocal = 0;
-       unsigned long flags;
-
-       /*
-        * If non-blocking mode is set, or the port is not enabled,
-        * then make the check up front and then exit.
-        */
-       if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
-               port->flags |= ASYNC_NORMAL_ACTIVE;
-               return 0;
-       }
-
-       if (tty->termios->c_cflag & CLOCAL)
-               do_clocal = 1;
-
-       /*
-        * Block waiting for the carrier detect and the line to become
-        * free (i.e., not in use by the callout).  While we are in
-        * this loop, port->count is dropped by one, so that
-        * mxser_close() knows when to free things.  We restore it upon
-        * exit, either normal or abnormal.
-        */
-       retval = 0;
-       add_wait_queue(&port->open_wait, &wait);
-
-       spin_lock_irqsave(&port->slock, flags);
-       if (!tty_hung_up_p(filp))
-               port->count--;
-       spin_unlock_irqrestore(&port->slock, flags);
-       port->blocked_open++;
-       while (1) {
-               spin_lock_irqsave(&port->slock, flags);
-               outb(inb(port->ioaddr + UART_MCR) |
-                       UART_MCR_DTR | UART_MCR_RTS, port->ioaddr + UART_MCR);
-               spin_unlock_irqrestore(&port->slock, flags);
-               set_current_state(TASK_INTERRUPTIBLE);
-               if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
-                       if (port->flags & ASYNC_HUP_NOTIFY)
-                               retval = -EAGAIN;
-                       else
-                               retval = -ERESTARTSYS;
-                       break;
-               }
-               if (!(port->flags & ASYNC_CLOSING) &&
-                               (do_clocal ||
-                               (inb(port->ioaddr + UART_MSR) & UART_MSR_DCD)))
-                       break;
-               if (signal_pending(current)) {
-                       retval = -ERESTARTSYS;
-                       break;
-               }
-               schedule();
-       }
-       set_current_state(TASK_RUNNING);
-       remove_wait_queue(&port->open_wait, &wait);
-       if (!tty_hung_up_p(filp))
-               port->count++;
-       port->blocked_open--;
-       if (retval)
-               return retval;
-       port->flags |= ASYNC_NORMAL_ACTIVE;
-       return 0;
-}
-
-static int mxser_startup(struct mxser_port *info)
-{
-       unsigned long page;
-       unsigned long flags;
-
-       page = __get_free_page(GFP_KERNEL);
-       if (!page)
-               return -ENOMEM;
-
-       spin_lock_irqsave(&info->slock, flags);
-
-       if (info->flags & ASYNC_INITIALIZED) {
-               free_page(page);
-               spin_unlock_irqrestore(&info->slock, flags);
-               return 0;
-       }
-
-       if (!info->ioaddr || !info->type) {
-               if (info->tty)
-                       set_bit(TTY_IO_ERROR, &info->tty->flags);
-               free_page(page);
-               spin_unlock_irqrestore(&info->slock, flags);
-               return 0;
-       }
-       if (info->xmit_buf)
-               free_page(page);
-       else
-               info->xmit_buf = (unsigned char *) page;
-
-       /*
-        * Clear the FIFO buffers and disable them
-        * (they will be reenabled in mxser_change_speed())
-        */
-       if (info->board->chip_flag)
-               outb((UART_FCR_CLEAR_RCVR |
-                       UART_FCR_CLEAR_XMIT |
-                       MOXA_MUST_FCR_GDA_MODE_ENABLE), info->ioaddr + UART_FCR);
-       else
-               outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT),
-                       info->ioaddr + UART_FCR);
-
-       /*
-        * At this point there's no way the LSR could still be 0xFF;
-        * if it is, then bail out, because there's likely no UART
-        * here.
-        */
-       if (inb(info->ioaddr + UART_LSR) == 0xff) {
-               spin_unlock_irqrestore(&info->slock, flags);
-               if (capable(CAP_SYS_ADMIN)) {
-                       if (info->tty)
-                               set_bit(TTY_IO_ERROR, &info->tty->flags);
-                       return 0;
-               } else
-                       return -ENODEV;
-       }
-
-       /*
-        * Clear the interrupt registers.
-        */
-       (void) inb(info->ioaddr + UART_LSR);
-       (void) inb(info->ioaddr + UART_RX);
-       (void) inb(info->ioaddr + UART_IIR);
-       (void) inb(info->ioaddr + UART_MSR);
-
-       /*
-        * Now, initialize the UART
-        */
-       outb(UART_LCR_WLEN8, info->ioaddr + UART_LCR);  /* reset DLAB */
-       info->MCR = UART_MCR_DTR | UART_MCR_RTS;
-       outb(info->MCR, info->ioaddr + UART_MCR);
-
-       /*
-        * Finally, enable interrupts
-        */
-       info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI;
-       /* info->IER = UART_IER_RLSI | UART_IER_RDI; */
-
-       /* following add by Victor Yu. 08-30-2002 */
-       if (info->board->chip_flag)
-               info->IER |= MOXA_MUST_IER_EGDAI;
-       /* above add by Victor Yu. 08-30-2002 */
-       outb(info->IER, info->ioaddr + UART_IER);       /* enable interrupts */
-
-       /*
-        * And clear the interrupt registers again for luck.
-        */
-       (void) inb(info->ioaddr + UART_LSR);
-       (void) inb(info->ioaddr + UART_RX);
-       (void) inb(info->ioaddr + UART_IIR);
-       (void) inb(info->ioaddr + UART_MSR);
-
-       if (info->tty)
-               clear_bit(TTY_IO_ERROR, &info->tty->flags);
-       info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
-
-       /*
-        * and set the speed of the serial port
-        */
-       spin_unlock_irqrestore(&info->slock, flags);
-       mxser_change_speed(info, NULL);
-
-       info->flags |= ASYNC_INITIALIZED;
-       return 0;
-}
-
-/*
- * This routine will shutdown a serial port; interrupts maybe disabled, and
- * DTR is dropped if the hangup on close termio flag is on.
- */
-static void mxser_shutdown(struct mxser_port *info)
-{
-       unsigned long flags;
-
-       if (!(info->flags & ASYNC_INITIALIZED))
-               return;
-
-       spin_lock_irqsave(&info->slock, flags);
-
-       /*
-        * clear delta_msr_wait queue to avoid mem leaks: we may free the irq
-        * here so the queue might never be waken up
-        */
-       wake_up_interruptible(&info->delta_msr_wait);
-
-       /*
-        * Free the IRQ, if necessary
-        */
-       if (info->xmit_buf) {
-               free_page((unsigned long) info->xmit_buf);
-               info->xmit_buf = NULL;
-       }
-
-       info->IER = 0;
-       outb(0x00, info->ioaddr + UART_IER);
-
-       if (!info->tty || (info->tty->termios->c_cflag & HUPCL))
-               info->MCR &= ~(UART_MCR_DTR | UART_MCR_RTS);
-       outb(info->MCR, info->ioaddr + UART_MCR);
-
-       /* clear Rx/Tx FIFO's */
-       /* following add by Victor Yu. 08-30-2002 */
-       if (info->board->chip_flag)
-               outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT |
-                               MOXA_MUST_FCR_GDA_MODE_ENABLE,
-                               info->ioaddr + UART_FCR);
-       else
-               /* above add by Victor Yu. 08-30-2002 */
-               outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT,
-                       info->ioaddr + UART_FCR);
-
-       /* read data port to reset things */
-       (void) inb(info->ioaddr + UART_RX);
-
-       if (info->tty)
-               set_bit(TTY_IO_ERROR, &info->tty->flags);
-
-       info->flags &= ~ASYNC_INITIALIZED;
-
-       /* following add by Victor Yu. 09-23-2002 */
-       if (info->board->chip_flag)
-               SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->ioaddr);
-       /* above add by Victor Yu. 09-23-2002 */
-
-       spin_unlock_irqrestore(&info->slock, flags);
-}
-
-/*
- * This routine is called to set the UART divisor registers to match
- * the specified baud rate for a serial port.
- */
-static int mxser_change_speed(struct mxser_port *info,
-               struct termios *old_termios)
-{
-       unsigned cflag, cval, fcr;
-       int ret = 0;
-       unsigned char status;
-       long baud;
-       unsigned long flags;
-
-       if (!info->tty || !info->tty->termios)
-               return ret;
-       cflag = info->tty->termios->c_cflag;
-       if (!(info->ioaddr))
-               return ret;
-
-#ifndef B921600
-#define B921600 (B460800 +1)
-#endif
-       if (mxser_set_baud_method[info->tty->index] == 0) {
-               baud = tty_get_baud_rate(info->tty);
-               mxser_set_baud(info, baud);
-       }
-
-       /* byte size and parity */
-       switch (cflag & CSIZE) {
-       case CS5:
-               cval = 0x00;
-               break;
-       case CS6:
-               cval = 0x01;
-               break;
-       case CS7:
-               cval = 0x02;
-               break;
-       case CS8:
-               cval = 0x03;
-               break;
-       default:
-               cval = 0x00;
-               break;          /* too keep GCC shut... */
-       }
-       if (cflag & CSTOPB)
-               cval |= 0x04;
-       if (cflag & PARENB)
-               cval |= UART_LCR_PARITY;
-       if (!(cflag & PARODD))
-               cval |= UART_LCR_EPAR;
-       if (cflag & CMSPAR)
-               cval |= UART_LCR_SPAR;
-
-       if ((info->type == PORT_8250) || (info->type == PORT_16450)) {
-               if (info->board->chip_flag) {
-                       fcr = UART_FCR_ENABLE_FIFO;
-                       fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
-                       SET_MOXA_MUST_FIFO_VALUE(info);
-               } else
-                       fcr = 0;
-       } else {
-               fcr = UART_FCR_ENABLE_FIFO;
-               /* following add by Victor Yu. 08-30-2002 */
-               if (info->board->chip_flag) {
-                       fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
-                       SET_MOXA_MUST_FIFO_VALUE(info);
-               } else {
-                       /* above add by Victor Yu. 08-30-2002 */
-                       switch (info->rx_trigger) {
-                       case 1:
-                               fcr |= UART_FCR_TRIGGER_1;
-                               break;
-                       case 4:
-                               fcr |= UART_FCR_TRIGGER_4;
-                               break;
-                       case 8:
-                               fcr |= UART_FCR_TRIGGER_8;
-                               break;
-                       default:
-                               fcr |= UART_FCR_TRIGGER_14;
-                               break;
-                       }
-               }
-       }
-
-       /* CTS flow control flag and modem status interrupts */
-       info->IER &= ~UART_IER_MSI;
-       info->MCR &= ~UART_MCR_AFE;
-       if (cflag & CRTSCTS) {
-               info->flags |= ASYNC_CTS_FLOW;
-               info->IER |= UART_IER_MSI;
-               if ((info->type == PORT_16550A) || (info->board->chip_flag)) {
-                       info->MCR |= UART_MCR_AFE;
-/*                     status = mxser_get_msr(info->ioaddr, 0, info->port); */
-/*
-       save_flags(flags);
-       cli();
-       status = inb(baseaddr + UART_MSR);
-       restore_flags(flags);
-*/
-                       /* mxser_check_modem_status(info, status); */
-               } else {
-/*                     status = mxser_get_msr(info->ioaddr, 0, info->port); */
-                       /* MX_LOCK(&info->slock); */
-                       status = inb(info->ioaddr + UART_MSR);
-                       /* MX_UNLOCK(&info->slock); */
-                       if (info->tty->hw_stopped) {
-                               if (status & UART_MSR_CTS) {
-                                       info->tty->hw_stopped = 0;
-                                       if (info->type != PORT_16550A &&
-                                                       !info->board->chip_flag) {
-                                               outb(info->IER & ~UART_IER_THRI,
-                                                       info->ioaddr +
-                                                       UART_IER);
-                                               info->IER |= UART_IER_THRI;
-                                               outb(info->IER, info->ioaddr +
-                                                               UART_IER);
-                                       }
-                                       set_bit(MXSER_EVENT_TXLOW, &info->event);
-                                       schedule_work(&info->tqueue);                           }
-                       } else {
-                               if (!(status & UART_MSR_CTS)) {
-                                       info->tty->hw_stopped = 1;
-                                       if ((info->type != PORT_16550A) &&
-                                                       (!info->board->chip_flag)) {
-                                               info->IER &= ~UART_IER_THRI;
-                                               outb(info->IER, info->ioaddr +
-                                                               UART_IER);
-                                       }
-                               }
-                       }
-               }
-       } else {
-               info->flags &= ~ASYNC_CTS_FLOW;
-       }
-       outb(info->MCR, info->ioaddr + UART_MCR);
-       if (cflag & CLOCAL) {
-               info->flags &= ~ASYNC_CHECK_CD;
-       } else {
-               info->flags |= ASYNC_CHECK_CD;
-               info->IER |= UART_IER_MSI;
-       }
-       outb(info->IER, info->ioaddr + UART_IER);
-
-       /*
-        * Set up parity check flag
-        */
-       info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
-       if (I_INPCK(info->tty))
-               info->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
-       if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
-               info->read_status_mask |= UART_LSR_BI;
-
-       info->ignore_status_mask = 0;
-
-       if (I_IGNBRK(info->tty)) {
-               info->ignore_status_mask |= UART_LSR_BI;
-               info->read_status_mask |= UART_LSR_BI;
-               /*
-                * If we're ignore parity and break indicators, ignore
-                * overruns too.  (For real raw support).
-                */
-               if (I_IGNPAR(info->tty)) {
-                       info->ignore_status_mask |=
-                                               UART_LSR_OE |
-                                               UART_LSR_PE |
-                                               UART_LSR_FE;
-                       info->read_status_mask |=
-                                               UART_LSR_OE |
-                                               UART_LSR_PE |
-                                               UART_LSR_FE;
-               }
-       }
-       /* following add by Victor Yu. 09-02-2002 */
-       if (info->board->chip_flag) {
-               spin_lock_irqsave(&info->slock, flags);
-               SET_MOXA_MUST_XON1_VALUE(info->ioaddr, START_CHAR(info->tty));
-               SET_MOXA_MUST_XOFF1_VALUE(info->ioaddr, STOP_CHAR(info->tty));
-               if (I_IXON(info->tty)) {
-                       ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
-               } else {
-                       DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
-               }
-               if (I_IXOFF(info->tty)) {
-                       ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
-               } else {
-                       DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
-               }
-               /*
-                  if ( I_IXANY(info->tty) ) {
-                  info->MCR |= MOXA_MUST_MCR_XON_ANY;
-                  ENABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->ioaddr);
-                  } else {
-                  info->MCR &= ~MOXA_MUST_MCR_XON_ANY;
-                  DISABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->ioaddr);
-                  }
-                */
-               spin_unlock_irqrestore(&info->slock, flags);
-       }
-       /* above add by Victor Yu. 09-02-2002 */
+#endif
+}
 
 
-       outb(fcr, info->ioaddr + UART_FCR);     /* set fcr */
-       outb(cval, info->ioaddr + UART_LCR);
+/*
+ * This routine is called by tty_hangup() when a hangup is signaled.
+ */
+void mxser_hangup(struct tty_struct *tty)
+{
+       struct mxser_port *info = tty->driver_data;
 
-       return ret;
+       mxser_flush_buffer(tty);
+       mxser_shutdown(info);
+       info->event = 0;
+       info->count = 0;
+       info->flags &= ~ASYNC_NORMAL_ACTIVE;
+       info->tty = NULL;
+       wake_up_interruptible(&info->open_wait);
 }
 
 
-static int mxser_set_baud(struct mxser_port *info, long newspd)
+/* added by James 03-12-2004. */
+/*
+ * mxser_rs_break() --- routine which turns the break handling on or off
+ */
+static void mxser_rs_break(struct tty_struct *tty, int break_state)
 {
-       int quot = 0;
-       unsigned char cval;
-       int ret = 0;
+       struct mxser_port *info = tty->driver_data;
        unsigned long flags;
 
-       if (!info->tty || !info->tty->termios)
-               return ret;
+       spin_lock_irqsave(&info->slock, flags);
+       if (break_state == -1)
+               outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC,
+                       info->ioaddr + UART_LCR);
+       else
+               outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC,
+                       info->ioaddr + UART_LCR);
+       spin_unlock_irqrestore(&info->slock, flags);
+}
 
-       if (!(info->ioaddr))
-               return ret;
+/* (above) added by James. */
 
-       if (newspd > info->max_baud)
-               return 0;
+static void mxser_receive_chars(struct mxser_port *port, int *status)
+{
+       struct tty_struct *tty = port->tty;
+       unsigned char ch, gdl;
+       int ignored = 0;
+       int cnt = 0;
+       int recv_room;
+       int max = 256;
+       unsigned long flags;
 
-       info->realbaud = newspd;
-       if (newspd == 134) {
-               quot = (2 * info->baud_base / 269);
-       } else if (newspd) {
-               quot = info->baud_base / newspd;
-               if (quot == 0)
-                       quot = 1;
-       } else {
-               quot = 0;
+       spin_lock_irqsave(&port->slock, flags);
+
+       recv_room = tty->receive_room;
+       if ((recv_room == 0) && (!port->ldisc_stop_rx)) {
+               /* mxser_throttle(tty); */
+               mxser_stoprx(tty);
+               /* return; */
        }
 
-       info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base);
-       info->timeout += HZ / 50;       /* Add .02 seconds of slop */
+       /* following add by Victor Yu. 09-02-2002 */
+       if (port->board->chip_flag != MOXA_OTHER_UART) {
 
-       if (quot) {
-               spin_lock_irqsave(&info->slock, flags);
-               info->MCR |= UART_MCR_DTR;
-               outb(info->MCR, info->ioaddr + UART_MCR);
-               spin_unlock_irqrestore(&info->slock, flags);
-       } else {
-               spin_lock_irqsave(&info->slock, flags);
-               info->MCR &= ~UART_MCR_DTR;
-               outb(info->MCR, info->ioaddr + UART_MCR);
-               spin_unlock_irqrestore(&info->slock, flags);
-               return ret;
+               if (*status & UART_LSR_SPECIAL)
+                       goto intr_old;
+               /* following add by Victor Yu. 02-11-2004 */
+               if (port->board->chip_flag == MOXA_MUST_MU860_HWID &&
+                               (*status & MOXA_MUST_LSR_RERR))
+                       goto intr_old;
+               /* above add by Victor Yu. 02-14-2004 */
+               if (*status & MOXA_MUST_LSR_RERR)
+                       goto intr_old;
+
+               gdl = inb(port->ioaddr + MOXA_MUST_GDL_REGISTER);
+
+               /* add by Victor Yu. 02-11-2004 */
+               if (port->board->chip_flag == MOXA_MUST_MU150_HWID)
+                       gdl &= MOXA_MUST_GDL_MASK;
+               if (gdl >= recv_room) {
+                       if (!port->ldisc_stop_rx) {
+                               /* mxser_throttle(tty); */
+                               mxser_stoprx(tty);
+                       }
+                       /* return; */
+               }
+               while (gdl--) {
+                       ch = inb(port->ioaddr + UART_RX);
+                       tty_insert_flip_char(tty, ch, 0);
+                       cnt++;
+               }
+               goto end_intr;
        }
+ intr_old:
+       /* above add by Victor Yu. 09-02-2002 */
 
-       cval = inb(info->ioaddr + UART_LCR);
+       do {
+               if (max-- < 0)
+                       break;
 
-       outb(cval | UART_LCR_DLAB, info->ioaddr + UART_LCR);    /* set DLAB */
+               ch = inb(port->ioaddr + UART_RX);
+               /* following add by Victor Yu. 09-02-2002 */
+               if (port->board->chip_flag && (*status & UART_LSR_OE)
+                               /*&& !(*status&UART_LSR_DR) */)
+                       outb(0x23, port->ioaddr + UART_FCR);
+               *status &= port->read_status_mask;
+               /* above add by Victor Yu. 09-02-2002 */
+               if (*status & port->ignore_status_mask) {
+                       if (++ignored > 100)
+                               break;
+               } else {
+                       char flag = 0;
+                       if (*status & UART_LSR_SPECIAL) {
+                               if (*status & UART_LSR_BI) {
+                                       flag = TTY_BREAK;
+/* added by casper 1/11/2000 */
+                                       port->icount.brk++;
 
-       outb(quot & 0xff, info->ioaddr + UART_DLL);     /* LS of divisor */
-       outb(quot >> 8, info->ioaddr + UART_DLM);       /* MS of divisor */
-       outb(cval, info->ioaddr + UART_LCR);    /* reset DLAB */
+                                       if (port->flags & ASYNC_SAK)
+                                               do_SAK(tty);
+                               } else if (*status & UART_LSR_PE) {
+                                       flag = TTY_PARITY;
+/* added by casper 1/11/2000 */
+                                       port->icount.parity++;
+                               } else if (*status & UART_LSR_FE) {
+                                       flag = TTY_FRAME;
+/* added by casper 1/11/2000 */
+                                       port->icount.frame++;
+                               } else if (*status & UART_LSR_OE) {
+                                       flag = TTY_OVERRUN;
+/* added by casper 1/11/2000 */
+                                       port->icount.overrun++;
+                               } else
+                                       flags = TTY_BREAK;
+                       } else
+                               flags = 0;
+                       tty_insert_flip_char(tty, ch, flag);
+                       cnt++;
+                       if (cnt >= recv_room) {
+                               if (!port->ldisc_stop_rx) {
+                                       /* mxser_throttle(tty); */
+                                       mxser_stoprx(tty);
+                               }
+                               break;
+                       }
 
+               }
 
-       return ret;
-}
+               /* following add by Victor Yu. 09-02-2002 */
+               if (port->board->chip_flag)
+                       break;
 
-/*
- * ------------------------------------------------------------
- * friends of mxser_ioctl()
- * ------------------------------------------------------------
- */
-static int mxser_get_serial_info(struct mxser_port *info,
-               struct serial_struct __user *retinfo)
-{
-       struct serial_struct tmp;
+               /* mask by Victor Yu. 09-02-2002
+                *status = inb(port->ioaddr + UART_LSR) & port->read_status_mask;
+                */
+               /* following add by Victor Yu. 09-02-2002 */
+               *status = inb(port->ioaddr + UART_LSR);
+               /* above add by Victor Yu. 09-02-2002 */
+       } while (*status & UART_LSR_DR);
 
-       if (!retinfo)
-               return -EFAULT;
-       memset(&tmp, 0, sizeof(tmp));
-       tmp.type = info->type;
-       tmp.line = info->tty->index;
-       tmp.port = info->ioaddr;
-       tmp.irq = info->board->irq;
-       tmp.flags = info->flags;
-       tmp.baud_base = info->baud_base;
-       tmp.close_delay = info->close_delay;
-       tmp.closing_wait = info->closing_wait;
-       tmp.custom_divisor = info->custom_divisor;
-       tmp.hub6 = 0;
-       if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
-               return -EFAULT;
-       return 0;
+end_intr:              /* add by Victor Yu. 09-02-2002 */
+       mxvar_log.rxcnt[port->tty->index] += cnt;
+       port->mon_data.rxcnt += cnt;
+       port->mon_data.up_rxcnt += cnt;
+       spin_unlock_irqrestore(&port->slock, flags);
+
+       tty_flip_buffer_push(tty);
 }
 
-static int mxser_set_serial_info(struct mxser_port *info,
-               struct serial_struct __user *new_info)
+static void mxser_transmit_chars(struct mxser_port *port)
 {
-       struct serial_struct new_serial;
-       unsigned int flags;
-       int retval = 0;
-
-       if (!new_info || !info->ioaddr)
-               return -EFAULT;
-       if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
-               return -EFAULT;
-
-       if ((new_serial.irq != info->board->irq) ||
-                       (new_serial.port != info->ioaddr) ||
-                       (new_serial.custom_divisor != info->custom_divisor) ||
-                       (new_serial.baud_base != info->baud_base))
-               return -EPERM;
+       int count, cnt;
+       unsigned long flags;
 
-       flags = info->flags & ASYNC_SPD_MASK;
+       spin_lock_irqsave(&port->slock, flags);
 
-       if (!capable(CAP_SYS_ADMIN)) {
-               if ((new_serial.baud_base != info->baud_base) ||
-                               (new_serial.close_delay != info->close_delay) ||
-                               ((new_serial.flags & ~ASYNC_USR_MASK) != (info->flags & ~ASYNC_USR_MASK)))
-                       return -EPERM;
-               info->flags = ((info->flags & ~ASYNC_USR_MASK) |
-                               (new_serial.flags & ASYNC_USR_MASK));
-       } else {
-               /*
-                * OK, past this point, all the error checking has been done.
-                * At this point, we start making changes.....
-                */
-               info->flags = ((info->flags & ~ASYNC_FLAGS) |
-                               (new_serial.flags & ASYNC_FLAGS));
-               info->close_delay = new_serial.close_delay * HZ / 100;
-               info->closing_wait = new_serial.closing_wait * HZ / 100;
-               info->tty->low_latency =
-                               (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
-               info->tty->low_latency = 0;     /* (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; */
+       if (port->x_char) {
+               outb(port->x_char, port->ioaddr + UART_TX);
+               port->x_char = 0;
+               mxvar_log.txcnt[port->tty->index]++;
+               port->mon_data.txcnt++;
+               port->mon_data.up_txcnt++;
+
+/* added by casper 1/11/2000 */
+               port->icount.tx++;
+               goto unlock;
        }
 
-       /* added by casper, 3/17/2000, for mouse */
-       info->type = new_serial.type;
+       if (port->xmit_buf == 0)
+               goto unlock;
 
-       process_txrx_fifo(info);
+       if (port->xmit_cnt == 0) {
+               if (port->xmit_cnt < WAKEUP_CHARS) { /* XXX what's this for?? */
+                       set_bit(MXSER_EVENT_TXLOW, &port->event);
+                       schedule_work(&port->tqueue);
+               }
+               goto unlock;
+       }
+       if (port->tty->stopped || (port->tty->hw_stopped &&
+                       (port->type != PORT_16550A) &&
+                       (!port->board->chip_flag))) {
+               port->IER &= ~UART_IER_THRI;
+               outb(port->IER, port->ioaddr + UART_IER);
+               goto unlock;
+       }
 
-       if (info->flags & ASYNC_INITIALIZED) {
-               if (flags != (info->flags & ASYNC_SPD_MASK))
-                       mxser_change_speed(info, NULL);
-       } else
-               retval = mxser_startup(info);
+       cnt = port->xmit_cnt;
+       count = port->xmit_fifo_size;
+       do {
+               outb(port->xmit_buf[port->xmit_tail++],
+                       port->ioaddr + UART_TX);
+               port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE - 1);
+               if (--port->xmit_cnt <= 0)
+                       break;
+       } while (--count > 0);
+       mxvar_log.txcnt[port->tty->index] += (cnt - port->xmit_cnt);
 
-       return retval;
-}
+/* added by James 03-12-2004. */
+       port->mon_data.txcnt += (cnt - port->xmit_cnt);
+       port->mon_data.up_txcnt += (cnt - port->xmit_cnt);
 
-/*
- * mxser_get_lsr_info - get line status register info
- *
- * Purpose: Let user call ioctl() to get info when the UART physically
- *         is emptied.  On bus types like RS485, the transmitter must
- *         release the bus after transmitting. This must be done when
- *         the transmit shift register is empty, not be done when the
- *         transmit holding register is empty.  This functionality
- *         allows an RS485 driver to be written in user space.
- */
-static int mxser_get_lsr_info(struct mxser_port *info,
-               unsigned int __user *value)
-{
-       unsigned char status;
-       unsigned int result;
-       unsigned long flags;
+/* added by casper 1/11/2000 */
+       port->icount.tx += (cnt - port->xmit_cnt);
 
-       spin_lock_irqsave(&info->slock, flags);
-       status = inb(info->ioaddr + UART_LSR);
-       spin_unlock_irqrestore(&info->slock, flags);
-       result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
-       return put_user(result, value);
+       if (port->xmit_cnt < WAKEUP_CHARS) {
+               set_bit(MXSER_EVENT_TXLOW, &port->event);
+               schedule_work(&port->tqueue);
+       }
+       if (port->xmit_cnt <= 0) {
+               port->IER &= ~UART_IER_THRI;
+               outb(port->IER, port->ioaddr + UART_IER);
+       }
+unlock:
+       spin_unlock_irqrestore(&port->slock, flags);
 }
 
 /*
- * This routine sends a break character out the serial port.
+ * This is the serial driver's generic interrupt routine
  */
-static void mxser_send_break(struct mxser_port *info, int duration)
+static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 {
-       unsigned long flags;
+       int status, iir, i;
+       struct mxser_board *brd = NULL;
+       struct mxser_port *port;
+       int max, irqbits, bits, msr;
+       int pass_counter = 0;
+       unsigned int int_cnt;
+       int handled = IRQ_NONE;
 
-       if (!info->ioaddr)
-               return;
-       set_current_state(TASK_INTERRUPTIBLE);
-       spin_lock_irqsave(&info->slock, flags);
-       outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC,
-               info->ioaddr + UART_LCR);
-       spin_unlock_irqrestore(&info->slock, flags);
-       schedule_timeout(duration);
-       spin_lock_irqsave(&info->slock, flags);
-       outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC,
-               info->ioaddr + UART_LCR);
-       spin_unlock_irqrestore(&info->slock, flags);
-}
+       /* spin_lock(&gm_lock); */
 
-static int mxser_tiocmget(struct tty_struct *tty, struct file *file)
-{
-       struct mxser_port *info = tty->driver_data;
-       unsigned char control, status;
-       unsigned long flags;
+       for (i = 0; i < MXSER_BOARDS; i++)
+               if (dev_id == &mxser_boards[i]) {
+                       brd = dev_id;
+                       break;
+               }
 
+       if (i == MXSER_BOARDS)
+               goto irq_stop;
+       if (brd == NULL)
+               goto irq_stop;
+       max = mxser_numports[brd->board_type - 1];
+       while (1) {
+               irqbits = inb(brd->vector) & brd->vector_mask;
+               if (irqbits == brd->vector_mask)
+                       break;
 
-       if (tty->index == MXSER_PORTS)
-               return -ENOIOCTLCMD;
-       if (tty->flags & (1 << TTY_IO_ERROR))
-               return -EIO;
+               handled = IRQ_HANDLED;
+               for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) {
+                       if (irqbits == brd->vector_mask)
+                               break;
+                       if (bits & irqbits)
+                               continue;
+                       port = &brd->ports[i];
 
-       control = info->MCR;
+                       int_cnt = 0;
+                       do {
+                               /* following add by Victor Yu. 09-13-2002 */
+                               iir = inb(port->ioaddr + UART_IIR);
+                               if (iir & UART_IIR_NO_INT)
+                                       break;
+                               iir &= MOXA_MUST_IIR_MASK;
+                               if (!port->tty) {
+                                       status = inb(port->ioaddr + UART_LSR);
+                                       outb(0x27, port->ioaddr + UART_FCR);
+                                       inb(port->ioaddr + UART_MSR);
+                                       break;
+                               }
+                               /* above add by Victor Yu. 09-13-2002 */
 
-       spin_lock_irqsave(&info->slock, flags);
-       status = inb(info->ioaddr + UART_MSR);
-       if (status & UART_MSR_ANY_DELTA)
-               mxser_check_modem_status(info, status);
-       spin_unlock_irqrestore(&info->slock, flags);
-       return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) |
-                   ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) |
-                   ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) |
-                   ((status & UART_MSR_RI) ? TIOCM_RNG : 0) |
-                   ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) |
-                   ((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
+                               /* following add by Victor Yu. 09-02-2002 */
+                               status = inb(port->ioaddr + UART_LSR);
+
+                               if (status & UART_LSR_PE)
+                                       port->err_shadow |= NPPI_NOTIFY_PARITY;
+                               if (status & UART_LSR_FE)
+                                       port->err_shadow |= NPPI_NOTIFY_FRAMING;
+                               if (status & UART_LSR_OE)
+                                       port->err_shadow |=
+                                               NPPI_NOTIFY_HW_OVERRUN;
+                               if (status & UART_LSR_BI)
+                                       port->err_shadow |= NPPI_NOTIFY_BREAK;
+
+                               if (port->board->chip_flag) {
+                                       /*
+                                          if ( (status & 0x02) && !(status & 0x01) ) {
+                                          outb(port->ioaddr+UART_FCR,  0x23);
+                                          continue;
+                                          }
+                                        */
+                                       if (iir == MOXA_MUST_IIR_GDA ||
+                                           iir == MOXA_MUST_IIR_RDA ||
+                                           iir == MOXA_MUST_IIR_RTO ||
+                                           iir == MOXA_MUST_IIR_LSR)
+                                               mxser_receive_chars(port,
+                                                               &status);
+
+                               } else {
+                                       /* above add by Victor Yu. 09-02-2002 */
+
+                                       status &= port->read_status_mask;
+                                       if (status & UART_LSR_DR)
+                                               mxser_receive_chars(port,
+                                                               &status);
+                               }
+                               msr = inb(port->ioaddr + UART_MSR);
+                               if (msr & UART_MSR_ANY_DELTA)
+                                       mxser_check_modem_status(port, msr);
+
+                               /* following add by Victor Yu. 09-13-2002 */
+                               if (port->board->chip_flag) {
+                                       if (iir == 0x02 && (status &
+                                                               UART_LSR_THRE))
+                                               mxser_transmit_chars(port);
+                               } else {
+                                       /* above add by Victor Yu. 09-13-2002 */
+
+                                       if (status & UART_LSR_THRE)
+                                               mxser_transmit_chars(port);
+                               }
+                       } while (int_cnt++ < MXSER_ISR_PASS_LIMIT);
+               }
+               if (pass_counter++ > MXSER_ISR_PASS_LIMIT)
+                       break;  /* Prevent infinite loops */
+       }
+
+      irq_stop:
+       /* spin_unlock(&gm_lock); */
+       return handled;
 }
 
-static int mxser_tiocmset(struct tty_struct *tty, struct file *file,
-               unsigned int set, unsigned int clear)
+static const struct tty_operations mxser_ops = {
+       .open = mxser_open,
+       .close = mxser_close,
+       .write = mxser_write,
+       .put_char = mxser_put_char,
+       .flush_chars = mxser_flush_chars,
+       .write_room = mxser_write_room,
+       .chars_in_buffer = mxser_chars_in_buffer,
+       .flush_buffer = mxser_flush_buffer,
+       .ioctl = mxser_ioctl,
+       .throttle = mxser_throttle,
+       .unthrottle = mxser_unthrottle,
+       .set_termios = mxser_set_termios,
+       .stop = mxser_stop,
+       .start = mxser_start,
+       .hangup = mxser_hangup,
+       .break_ctl = mxser_rs_break,
+       .wait_until_sent = mxser_wait_until_sent,
+       .tiocmget = mxser_tiocmget,
+       .tiocmset = mxser_tiocmset,
+};
+
+/*
+ * The MOXA Smartio/Industio serial driver boot-time initialization code!
+ */
+
+static int __devinit mxser_initbrd(struct mxser_board *brd)
 {
-       struct mxser_port *info = tty->driver_data;
-       unsigned long flags;
+       struct mxser_port *info;
+       unsigned int i;
+       int retval;
+
+       printk(KERN_INFO "max. baud rate = %d bps.\n", brd->ports[0].max_baud);
+
+       for (i = 0; i < brd->nports; i++) {
+               info = &brd->ports[i];
+               info->board = brd;
+               info->stop_rx = 0;
+               info->ldisc_stop_rx = 0;
 
+               /* Enhance mode enabled here */
+               if (brd->chip_flag != MOXA_OTHER_UART)
+                       ENABLE_MOXA_MUST_ENCHANCE_MODE(info->ioaddr);
 
-       if (tty->index == MXSER_PORTS)
-               return -ENOIOCTLCMD;
-       if (tty->flags & (1 << TTY_IO_ERROR))
-               return -EIO;
+               info->flags = ASYNC_SHARE_IRQ;
+               info->type = brd->uart_type;
 
-       spin_lock_irqsave(&info->slock, flags);
+               process_txrx_fifo(info);
 
-       if (set & TIOCM_RTS)
-               info->MCR |= UART_MCR_RTS;
-       if (set & TIOCM_DTR)
-               info->MCR |= UART_MCR_DTR;
+               info->custom_divisor = info->baud_base * 16;
+               info->close_delay = 5 * HZ / 10;
+               info->closing_wait = 30 * HZ;
+               INIT_WORK(&info->tqueue, mxser_do_softint, info);
+               info->normal_termios = mxvar_sdriver->init_termios;
+               init_waitqueue_head(&info->open_wait);
+               init_waitqueue_head(&info->close_wait);
+               init_waitqueue_head(&info->delta_msr_wait);
+               memset(&info->mon_data, 0, sizeof(struct mxser_mon));
+               info->err_shadow = 0;
+               spin_lock_init(&info->slock);
 
-       if (clear & TIOCM_RTS)
-               info->MCR &= ~UART_MCR_RTS;
-       if (clear & TIOCM_DTR)
-               info->MCR &= ~UART_MCR_DTR;
+               /* before set INT ISR, disable all int */
+               outb(inb(info->ioaddr + UART_IER) & 0xf0,
+                       info->ioaddr + UART_IER);
+       }
+       /*
+        * Allocate the IRQ if necessary
+        */
 
-       outb(info->MCR, info->ioaddr + UART_MCR);
-       spin_unlock_irqrestore(&info->slock, flags);
+       retval = request_irq(brd->irq, mxser_interrupt,
+                       (brd->ports[0].flags & ASYNC_SHARE_IRQ) ? IRQF_SHARED :
+                       IRQF_DISABLED, "mxser", brd);
+       if (retval) {
+               printk(KERN_ERR "Board %s: Request irq failed, IRQ (%d) may "
+                       "conflict with another device.\n",
+                       mxser_brdname[brd->board_type - 1], brd->irq);
+               return retval;
+       }
        return 0;
 }
 
-
-static int mxser_read_register(int, unsigned short *);
-static int mxser_program_mode(int);
-static void mxser_normal_mode(int);
-
 static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd)
 {
        int id, i, bits;
@@ -2943,156 +2682,348 @@ static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd)
                        return MXSER_ERR_IRQ_CONFLIT;
        }
 
-       if (!irq)
-               return MXSER_ERR_IRQ;
-       brd->irq = ((int)(irq & 0xF000) >> 12);
-       for (i = 0; i < 8; i++)
-               brd->ports[i].ioaddr = (int) regs[i + 1] & 0xFFF8;
-       if ((regs[12] & 0x80) == 0)
-               return MXSER_ERR_VECTOR;
-       brd->vector = (int)regs[11];    /* interrupt vector */
-       if (id == 1)
-               brd->vector_mask = 0x00FF;
-       else
-               brd->vector_mask = 0x000F;
-       for (i = 7, bits = 0x0100; i >= 0; i--, bits <<= 1) {
-               if (regs[12] & bits) {
-                       brd->ports[i].baud_base = 921600;
-                       brd->ports[i].max_baud = 921600;        /* add by Victor Yu. 09-04-2002 */
-               } else {
-                       brd->ports[i].baud_base = 115200;
-                       brd->ports[i].max_baud = 115200;        /* add by Victor Yu. 09-04-2002 */
+       if (!irq)
+               return MXSER_ERR_IRQ;
+       brd->irq = ((int)(irq & 0xF000) >> 12);
+       for (i = 0; i < 8; i++)
+               brd->ports[i].ioaddr = (int) regs[i + 1] & 0xFFF8;
+       if ((regs[12] & 0x80) == 0)
+               return MXSER_ERR_VECTOR;
+       brd->vector = (int)regs[11];    /* interrupt vector */
+       if (id == 1)
+               brd->vector_mask = 0x00FF;
+       else
+               brd->vector_mask = 0x000F;
+       for (i = 7, bits = 0x0100; i >= 0; i--, bits <<= 1) {
+               if (regs[12] & bits) {
+                       brd->ports[i].baud_base = 921600;
+                       brd->ports[i].max_baud = 921600;        /* add by Victor Yu. 09-04-2002 */
+               } else {
+                       brd->ports[i].baud_base = 115200;
+                       brd->ports[i].max_baud = 115200;        /* add by Victor Yu. 09-04-2002 */
+               }
+       }
+       scratch2 = inb(cap + UART_LCR) & (~UART_LCR_DLAB);
+       outb(scratch2 | UART_LCR_DLAB, cap + UART_LCR);
+       outb(0, cap + UART_EFR);        /* EFR is the same as FCR */
+       outb(scratch2, cap + UART_LCR);
+       outb(UART_FCR_ENABLE_FIFO, cap + UART_FCR);
+       scratch = inb(cap + UART_IIR);
+
+       if (scratch & 0xC0)
+               brd->uart_type = PORT_16550A;
+       else
+               brd->uart_type = PORT_16450;
+       if (id == 1)
+               brd->nports = 8;
+       else
+               brd->nports = 4;
+       if (!request_region(brd->ports[0].ioaddr, 8 * brd->nports, "mxser(IO)"))
+               return MXSER_ERR_IOADDR;
+       if (!request_region(brd->vector, 1, "mxser(vector)")) {
+               release_region(brd->ports[0].ioaddr, 8 * brd->nports);
+               return MXSER_ERR_VECTOR;
+       }
+       return brd->nports;
+}
+
+static int __init mxser_get_PCI_conf(int board_type, struct mxser_board *brd,
+               struct pci_dev *pdev)
+{
+       unsigned int i, j;
+       unsigned long ioaddress;
+       int retval;
+
+       /* io address */
+       brd->board_type = board_type;
+       brd->nports = mxser_numports[board_type - 1];
+       ioaddress = pci_resource_start(pdev, 2);
+       retval = pci_request_region(pdev, 2, "mxser(IO)");
+       if (retval)
+               goto err;
+
+       for (i = 0; i < brd->nports; i++)
+               brd->ports[i].ioaddr = ioaddress + 8 * i;
+
+       /* vector */
+       ioaddress = pci_resource_start(pdev, 3);
+       retval = pci_request_region(pdev, 3, "mxser(vector)");
+       if (retval)
+               goto err_relio;
+       brd->vector = ioaddress;
+
+       /* irq */
+       brd->irq = pdev->irq;
+
+       brd->chip_flag = CheckIsMoxaMust(brd->ports[0].ioaddr);
+       brd->uart_type = PORT_16550A;
+       brd->vector_mask = 0;
+
+       for (i = 0; i < brd->nports; i++) {
+               for (j = 0; j < UART_INFO_NUM; j++) {
+                       if (Gpci_uart_info[j].type == brd->chip_flag) {
+                               brd->ports[i].max_baud =
+                                       Gpci_uart_info[j].max_baud;
+
+                               /* exception....CP-102 */
+                               if (board_type == MXSER_BOARD_CP102)
+                                       brd->ports[i].max_baud = 921600;
+                               break;
+                       }
+               }
+       }
+
+       if (brd->chip_flag == MOXA_MUST_MU860_HWID) {
+               for (i = 0; i < brd->nports; i++) {
+                       if (i < 4)
+                               brd->ports[i].opmode_ioaddr = ioaddress + 4;
+                       else
+                               brd->ports[i].opmode_ioaddr = ioaddress + 0x0c;
+               }
+               outb(0, ioaddress + 4); /* default set to RS232 mode */
+               outb(0, ioaddress + 0x0c);      /* default set to RS232 mode */
+       }
+
+       for (i = 0; i < brd->nports; i++) {
+               brd->vector_mask |= (1 << i);
+               brd->ports[i].baud_base = 921600;
+       }
+       return 0;
+err_relio:
+       pci_release_region(pdev, 2);
+err:
+       return retval;
+}
+
+static int __init mxser_module_init(void)
+{
+       struct pci_dev *pdev = NULL;
+       struct mxser_board *brd;
+       unsigned int i, m;
+       int retval, b, n;
+
+       pr_debug("Loading module mxser ...\n");
+
+       mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1);
+       if (!mxvar_sdriver)
+               return -ENOMEM;
+       spin_lock_init(&gm_lock);
+
+       for (i = 0; i < MXSER_BOARDS; i++)
+               mxser_boards[i].board_type = -1;
+
+       printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n",
+               MXSER_VERSION);
+
+       /* Initialize the tty_driver structure */
+       mxvar_sdriver->magic = TTY_DRIVER_MAGIC;
+       mxvar_sdriver->name = "ttyM";
+       mxvar_sdriver->major = ttymajor;
+       mxvar_sdriver->minor_start = 0;
+       mxvar_sdriver->num = MXSER_PORTS + 1;
+       mxvar_sdriver->type = TTY_DRIVER_TYPE_SERIAL;
+       mxvar_sdriver->subtype = SERIAL_TYPE_NORMAL;
+       mxvar_sdriver->init_termios = tty_std_termios;
+       mxvar_sdriver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL;
+       mxvar_sdriver->flags = TTY_DRIVER_REAL_RAW;
+       tty_set_operations(mxvar_sdriver, &mxser_ops);
+       mxvar_sdriver->ttys = mxvar_tty;
+       mxvar_sdriver->termios = mxvar_termios;
+       mxvar_sdriver->termios_locked = mxvar_termios_locked;
+
+       mxvar_diagflag = 0;
+
+       m = 0;
+       /* Start finding ISA boards here */
+       for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
+               int cap;
+
+               if (!(cap = mxserBoardCAP[b]))
+                       continue;
+
+               brd = &mxser_boards[m];
+               retval = mxser_get_ISA_conf(cap, brd);
+
+               if (retval != 0)
+                       printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n",
+                               mxser_brdname[brd->board_type - 1], ioaddr[b]);
+
+               if (retval <= 0) {
+                       if (retval == MXSER_ERR_IRQ)
+                               printk(KERN_ERR "Invalid interrupt number, "
+                                       "board not configured\n");
+                       else if (retval == MXSER_ERR_IRQ_CONFLIT)
+                               printk(KERN_ERR "Invalid interrupt number, "
+                                       "board not configured\n");
+                       else if (retval == MXSER_ERR_VECTOR)
+                               printk(KERN_ERR "Invalid interrupt vector, "
+                                       "board not configured\n");
+                       else if (retval == MXSER_ERR_IOADDR)
+                               printk(KERN_ERR "Invalid I/O address, "
+                                       "board not configured\n");
+
+                       continue;
+               }
+
+               brd->pdev = NULL;
+
+               /* mxser_initbrd will hook ISR. */
+               if (mxser_initbrd(brd) < 0)
+                       continue;
+
+               m++;
+       }
+
+       /* Start finding ISA boards from module arg */
+       for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
+               unsigned long cap;
+
+               if (!(cap = ioaddr[b]))
+                       continue;
+
+               brd = &mxser_boards[m];
+               retval = mxser_get_ISA_conf(cap, &mxser_boards[m]);
+
+               if (retval != 0)
+                       printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n",
+                               mxser_brdname[brd->board_type - 1], ioaddr[b]);
+
+               if (retval <= 0) {
+                       if (retval == MXSER_ERR_IRQ)
+                               printk(KERN_ERR "Invalid interrupt number, "
+                                       "board not configured\n");
+                       else if (retval == MXSER_ERR_IRQ_CONFLIT)
+                               printk(KERN_ERR "Invalid interrupt number, "
+                                       "board not configured\n");
+                       else if (retval == MXSER_ERR_VECTOR)
+                               printk(KERN_ERR "Invalid interrupt vector, "
+                                       "board not configured\n");
+                       else if (retval == MXSER_ERR_IOADDR)
+                               printk(KERN_ERR "Invalid I/O address, "
+                                       "board not configured\n");
+
+                       continue;
                }
+
+               brd->pdev = NULL;
+               /* mxser_initbrd will hook ISR. */
+               if (mxser_initbrd(brd) < 0)
+                       continue;
+
+               m++;
        }
-       scratch2 = inb(cap + UART_LCR) & (~UART_LCR_DLAB);
-       outb(scratch2 | UART_LCR_DLAB, cap + UART_LCR);
-       outb(0, cap + UART_EFR);        /* EFR is the same as FCR */
-       outb(scratch2, cap + UART_LCR);
-       outb(UART_FCR_ENABLE_FIFO, cap + UART_FCR);
-       scratch = inb(cap + UART_IIR);
 
-       if (scratch & 0xC0)
-               brd->uart_type = PORT_16550A;
-       else
-               brd->uart_type = PORT_16450;
-       if (id == 1)
-               brd->nports = 8;
-       else
-               brd->nports = 4;
-       if (!request_region(brd->ports[0].ioaddr, 8 * brd->nports, "mxser(IO)"))
-               return MXSER_ERR_IOADDR;
-       if (!request_region(brd->vector, 1, "mxser(vector)")) {
-               release_region(brd->ports[0].ioaddr, 8 * brd->nports);
-               return MXSER_ERR_VECTOR;
+       /* start finding PCI board here */
+       n = ARRAY_SIZE(mxser_pcibrds) - 1;
+       b = 0;
+       while (b < n) {
+               pdev = pci_get_device(mxser_pcibrds[b].vendor,
+                               mxser_pcibrds[b].device, pdev);
+               if (pdev == NULL) {
+                       b++;
+                       continue;
+               }
+               printk(KERN_INFO "Found MOXA %s board(BusNo=%d,DevNo=%d)\n",
+                       mxser_brdname[(int) (mxser_pcibrds[b].driver_data) - 1],
+                       pdev->bus->number, PCI_SLOT(pdev->devfn));
+               if (m >= MXSER_BOARDS)
+                       printk(KERN_ERR
+                               "Too many Smartio/Industio family boards find "
+                               "(maximum %d), board not configured\n",
+                               MXSER_BOARDS);
+               else {
+                       if (pci_enable_device(pdev)) {
+                               printk(KERN_ERR "Moxa SmartI/O PCI enable "
+                                       "fail !\n");
+                               continue;
+                       }
+                       brd = &mxser_boards[m];
+                       brd->pdev = pdev;
+                       retval = mxser_get_PCI_conf(
+                                       (int)mxser_pcibrds[b].driver_data,
+                                       brd, pdev);
+                       if (retval < 0) {
+                               if (retval == MXSER_ERR_IRQ)
+                                       printk(KERN_ERR
+                                               "Invalid interrupt number, "
+                                               "board not configured\n");
+                               else if (retval == MXSER_ERR_IRQ_CONFLIT)
+                                       printk(KERN_ERR
+                                               "Invalid interrupt number, "
+                                               "board not configured\n");
+                               else if (retval == MXSER_ERR_VECTOR)
+                                       printk(KERN_ERR
+                                               "Invalid interrupt vector, "
+                                               "board not configured\n");
+                               else if (retval == MXSER_ERR_IOADDR)
+                                       printk(KERN_ERR
+                                               "Invalid I/O address, "
+                                               "board not configured\n");
+                               continue;
+                       }
+                       /* mxser_initbrd will hook ISR. */
+                       if (mxser_initbrd(brd) < 0)
+                               continue;
+                       m++;
+                       /* Keep an extra reference if we succeeded. It will
+                          be returned at unload time */
+                       pci_dev_get(pdev);
+               }
        }
-       return brd->nports;
-}
 
-#define CHIP_SK        0x01    /* Serial Data Clock  in Eprom */
-#define CHIP_DO        0x02    /* Serial Data Output in Eprom */
-#define CHIP_CS        0x04    /* Serial Chip Select in Eprom */
-#define CHIP_DI        0x08    /* Serial Data Input  in Eprom */
-#define EN_CCMD        0x000   /* Chip's command register     */
-#define EN0_RSARLO     0x008   /* Remote start address reg 0  */
-#define EN0_RSARHI     0x009   /* Remote start address reg 1  */
-#define EN0_RCNTLO     0x00A   /* Remote byte count reg WR    */
-#define EN0_RCNTHI     0x00B   /* Remote byte count reg WR    */
-#define EN0_DCFG       0x00E   /* Data configuration reg WR   */
-#define EN0_PORT       0x010   /* Rcv missed frame error counter RD */
-#define ENC_PAGE0      0x000   /* Select page 0 of chip registers   */
-#define ENC_PAGE3      0x0C0   /* Select page 3 of chip registers   */
-static int mxser_read_register(int port, unsigned short *regs)
-{
-       int i, k, value, id;
-       unsigned int j;
+       retval = tty_register_driver(mxvar_sdriver);
+       if (retval) {
+               printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family"
+                               " driver !\n");
+               put_tty_driver(mxvar_sdriver);
 
-       id = mxser_program_mode(port);
-       if (id < 0)
-               return id;
-       for (i = 0; i < 14; i++) {
-               k = (i & 0x3F) | 0x180;
-               for (j = 0x100; j > 0; j >>= 1) {
-                       outb(CHIP_CS, port);
-                       if (k & j) {
-                               outb(CHIP_CS | CHIP_DO, port);
-                               outb(CHIP_CS | CHIP_DO | CHIP_SK, port);        /* A? bit of read */
-                       } else {
-                               outb(CHIP_CS, port);
-                               outb(CHIP_CS | CHIP_SK, port);  /* A? bit of read */
+               for (i = 0; i < MXSER_BOARDS; i++) {
+                       if (mxser_boards[i].board_type == -1)
+                               continue;
+                       else {
+                               free_irq(mxser_boards[i].irq, &mxser_boards[i]);
+                               /* todo: release io, vector */
                        }
                }
-               (void)inb(port);
-               value = 0;
-               for (k = 0, j = 0x8000; k < 16; k++, j >>= 1) {
-                       outb(CHIP_CS, port);
-                       outb(CHIP_CS | CHIP_SK, port);
-                       if (inb(port) & CHIP_DI)
-                               value |= j;
-               }
-               regs[i] = value;
-               outb(0, port);
+               return retval;
        }
-       mxser_normal_mode(port);
-       return id;
+
+       pr_debug("Done.\n");
+
+       return retval;
 }
 
-static int mxser_program_mode(int port)
+static void __exit mxser_module_exit(void)
 {
-       int id, i, j, n;
-       /* unsigned long flags; */
+       int i, err;
 
-       spin_lock(&gm_lock);
-       outb(0, port);
-       outb(0, port);
-       outb(0, port);
-       (void)inb(port);
-       (void)inb(port);
-       outb(0, port);
-       (void)inb(port);
-       /* restore_flags(flags); */
-       spin_unlock(&gm_lock);
+       pr_debug("Unloading module mxser ...\n");
 
-       id = inb(port + 1) & 0x1F;
-       if ((id != C168_ASIC_ID) &&
-                       (id != C104_ASIC_ID) &&
-                       (id != C102_ASIC_ID) &&
-                       (id != CI132_ASIC_ID) &&
-                       (id != CI134_ASIC_ID) &&
-                       (id != CI104J_ASIC_ID))
-               return -1;
-       for (i = 0, j = 0; i < 4; i++) {
-               n = inb(port + 2);
-               if (n == 'M') {
-                       j = 1;
-               } else if ((j == 1) && (n == 1)) {
-                       j = 2;
-                       break;
-               } else
-                       j = 0;
-       }
-       if (j != 2)
-               id = -2;
-       return id;
-}
+       err = tty_unregister_driver(mxvar_sdriver);
+       if (!err)
+               put_tty_driver(mxvar_sdriver);
+       else
+               printk(KERN_ERR "Couldn't unregister MOXA Smartio/Industio family serial driver\n");
 
-static void mxser_normal_mode(int port)
-{
-       int i, n;
+       for (i = 0; i < MXSER_BOARDS; i++) {
+               struct pci_dev *pdev;
 
-       outb(0xA5, port + 1);
-       outb(0x80, port + 3);
-       outb(12, port + 0);     /* 9600 bps */
-       outb(0, port + 1);
-       outb(0x03, port + 3);   /* 8 data bits */
-       outb(0x13, port + 4);   /* loop back mode */
-       for (i = 0; i < 16; i++) {
-               n = inb(port + 5);
-               if ((n & 0x61) == 0x60)
-                       break;
-               if ((n & 1) == 1)
-                       (void)inb(port);
+               if (mxser_boards[i].board_type == -1)
+                       continue;
+               else {
+                       pdev = mxser_boards[i].pdev;
+                       free_irq(mxser_boards[i].irq, &mxser_boards[i]);
+                       if (pdev != NULL) {     /* PCI */
+                               pci_release_region(pdev, 2);
+                               pci_release_region(pdev, 3);
+                               pci_dev_put(pdev);
+                       } else {
+                               release_region(mxser_boards[i].ports[0].ioaddr, 8 * mxser_boards[i].nports);
+                               release_region(mxser_boards[i].vector, 1);
+                       }
+               }
        }
-       outb(0x00, port + 4);
+       pr_debug("Done.\n");
 }
 
 module_init(mxser_module_init);