Char: mxser, remove it

(Old) mxser is obsoleted by mxser_new and scheduled for removal on Dec 2007.
Remove it by renaming mxser_new to mxser.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Reviewed-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1728 insertions, 2140 deletions

diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index 35ff7a24554..dd1b0ab4b31 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -1,41 +1,24 @@
 /*
  *          mxser.c  -- MOXA Smartio/Industio family multiport serial driver.
  *
- *      Copyright (C) 1999-2001  Moxa Technologies (support@moxa.com.tw).
+ *      Copyright (C) 1999-2006  Moxa Technologies (support@moxa.com.tw).
+ *	Copyright (C) 2006-2007  Jiri Slaby <jirislaby@gmail.com>
  *
- *      This code is loosely based on the Linux serial driver, written by
- *      Linus Torvalds, Theodore T'so and others.
+ *      This code is loosely based on the 1.8 moxa driver which is based on
+ *	Linux serial driver, written by Linus Torvalds, Theodore T'so and
+ *	others.
  *
  *      This program is free software; you can redistribute it and/or modify
  *      it under the terms of the GNU General Public License as published by
  *      the Free Software Foundation; either version 2 of the License, or
  *      (at your option) any later version.
  *
- *      This program is distributed in the hope that it will be useful,
- *      but WITHOUT ANY WARRANTY; without even the implied warranty of
- *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *      GNU General Public License for more details.
- *
- *      You should have received a copy of the GNU General Public License
- *      along with this program; if not, write to the Free Software
- *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *	Original release	10/26/00
- *
- *	02/06/01	Support MOXA Industio family boards.
- *	02/06/01	Support TIOCGICOUNT.
- *	02/06/01	Fix the problem for connecting to serial mouse.
- *	02/06/01	Fix the problem for H/W flow control.
- *	02/06/01	Fix the compling warning when CONFIG_PCI
- *			don't be defined.
- *
  *	Fed through a cleanup, indent and remove of non 2.6 code by Alan Cox
  *	<alan@redhat.com>. The original 1.8 code is available on www.moxa.com.
  *	- Fixed x86_64 cleanness
  *	- Fixed sleep with spinlock held in mxser_send_break
  */
 
-
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/signal.h>
@@ -64,30 +47,36 @@
 
 #include "mxser.h"
 
-#define	MXSER_VERSION	"1.8"
+#define	MXSER_VERSION	"2.0.2"		/* 1.10 */
 #define	MXSERMAJOR	 174
 #define	MXSERCUMAJOR	 175
 
-#define	MXSER_EVENT_TXLOW	1
-#define	MXSER_EVENT_HANGUP	2
-
 #define MXSER_BOARDS		4	/* Max. boards */
-#define MXSER_PORTS		32	/* Max. ports */
 #define MXSER_PORTS_PER_BOARD	8	/* Max. ports per board */
-#define MXSER_ISR_PASS_LIMIT	256
+#define MXSER_PORTS		(MXSER_BOARDS * MXSER_PORTS_PER_BOARD)
+#define MXSER_ISR_PASS_LIMIT	100
 
 #define	MXSER_ERR_IOADDR	-1
 #define	MXSER_ERR_IRQ		-2
 #define	MXSER_ERR_IRQ_CONFLIT	-3
 #define	MXSER_ERR_VECTOR	-4
 
+/*CheckIsMoxaMust return value*/
+#define MOXA_OTHER_UART		0x00
+#define MOXA_MUST_MU150_HWID	0x01
+#define MOXA_MUST_MU860_HWID	0x02
+
 #define WAKEUP_CHARS		256
 
 #define UART_MCR_AFE		0x20
 #define UART_LSR_SPECIAL	0x1E
 
+#define PCI_DEVICE_ID_CB108	0x1080
+#define PCI_DEVICE_ID_CB114	0x1142
+#define PCI_DEVICE_ID_CB134I	0x1341
+#define PCI_DEVICE_ID_CP138U	0x1380
+#define PCI_DEVICE_ID_POS104UL	0x1044
 
-#define IRQ_T(info) ((info->flags & ASYNC_SHARE_IRQ) ? IRQF_SHARED : IRQF_DISABLED)
 
 #define C168_ASIC_ID    1
 #define C104_ASIC_ID    2
@@ -96,88 +85,11 @@
 #define CI134_ASIC_ID	3
 #define CI104J_ASIC_ID  5
 
-enum {
-	MXSER_BOARD_C168_ISA = 1,
-	MXSER_BOARD_C104_ISA,
-	MXSER_BOARD_CI104J,
-	MXSER_BOARD_C168_PCI,
-	MXSER_BOARD_C104_PCI,
-	MXSER_BOARD_C102_ISA,
-	MXSER_BOARD_CI132,
-	MXSER_BOARD_CI134,
-	MXSER_BOARD_CP132,
-	MXSER_BOARD_CP114,
-	MXSER_BOARD_CT114,
-	MXSER_BOARD_CP102,
-	MXSER_BOARD_CP104U,
-	MXSER_BOARD_CP168U,
-	MXSER_BOARD_CP132U,
-	MXSER_BOARD_CP134U,
-	MXSER_BOARD_CP104JU,
-	MXSER_BOARD_RC7000,
-	MXSER_BOARD_CP118U,
-	MXSER_BOARD_CP102UL,
-	MXSER_BOARD_CP102U,
-};
-
-static char *mxser_brdname[] = {
-	"C168 series",
-	"C104 series",
-	"CI-104J series",
-	"C168H/PCI series",
-	"C104H/PCI series",
-	"C102 series",
-	"CI-132 series",
-	"CI-134 series",
-	"CP-132 series",
-	"CP-114 series",
-	"CT-114 series",
-	"CP-102 series",
-	"CP-104U series",
-	"CP-168U series",
-	"CP-132U series",
-	"CP-134U series",
-	"CP-104JU series",
-	"Moxa UC7000 Serial",
-	"CP-118U series",
-	"CP-102UL series",
-	"CP-102U series",
-};
-
-static int mxser_numports[] = {
-	8,			/* C168-ISA */
-	4,			/* C104-ISA */
-	4,			/* CI104J */
-	8,			/* C168-PCI */
-	4,			/* C104-PCI */
-	2,			/* C102-ISA */
-	2,			/* CI132 */
-	4,			/* CI134 */
-	2,			/* CP132 */
-	4,			/* CP114 */
-	4,			/* CT114 */
-	2,			/* CP102 */
-	4,			/* CP104U */
-	8,			/* CP168U */
-	2,			/* CP132U */
-	4,			/* CP134U */
-	4,			/* CP104JU */
-	8,			/* RC7000 */
-	8,			/* CP118U */
-	2,			/* CP102UL */
-	2,			/* CP102U */
-};
-
-#define UART_TYPE_NUM	2
-
-static const unsigned int Gmoxa_uart_id[UART_TYPE_NUM] = {
-	MOXA_MUST_MU150_HWID,
-	MOXA_MUST_MU860_HWID
-};
+#define MXSER_HIGHBAUD	1
+#define MXSER_HAS2	2
 
 /* This is only for PCI */
-#define UART_INFO_NUM	3
-struct mxpciuart_info {
+static const struct {
 	int type;
 	int tx_fifo;
 	int rx_fifo;
@@ -186,51 +98,83 @@ struct mxpciuart_info {
 	int rx_trigger;
 	int rx_low_water;
 	long max_baud;
-};
-
-static const struct mxpciuart_info Gpci_uart_info[UART_INFO_NUM] = {
+} Gpci_uart_info[] = {
 	{MOXA_OTHER_UART, 16, 16, 16, 14, 14, 1, 921600L},
 	{MOXA_MUST_MU150_HWID, 64, 64, 64, 48, 48, 16, 230400L},
 	{MOXA_MUST_MU860_HWID, 128, 128, 128, 96, 96, 32, 921600L}
 };
+#define UART_INFO_NUM	ARRAY_SIZE(Gpci_uart_info)
 
+struct mxser_cardinfo {
+	char *name;
+	unsigned int nports;
+	unsigned int flags;
+};
 
-#ifdef CONFIG_PCI
+static const struct mxser_cardinfo mxser_cards[] = {
+/* 0*/	{ "C168 series",	8, },
+	{ "C104 series",	4, },
+	{ "CI-104J series",	4, },
+	{ "C168H/PCI series",	8, },
+	{ "C104H/PCI series",	4, },
+/* 5*/	{ "C102 series",	4, MXSER_HAS2 },	/* C102-ISA */
+	{ "CI-132 series",	4, MXSER_HAS2 },
+	{ "CI-134 series",	4, },
+	{ "CP-132 series",	2, },
+	{ "CP-114 series",	4, },
+/*10*/	{ "CT-114 series",	4, },
+	{ "CP-102 series",	2, MXSER_HIGHBAUD },
+	{ "CP-104U series",	4, },
+	{ "CP-168U series",	8, },
+	{ "CP-132U series",	2, },
+/*15*/	{ "CP-134U series",	4, },
+	{ "CP-104JU series",	4, },
+	{ "Moxa UC7000 Serial",	8, },		/* RC7000 */
+	{ "CP-118U series",	8, },
+	{ "CP-102UL series",	2, },
+/*20*/	{ "CP-102U series",	2, },
+	{ "CP-118EL series",	8, },
+	{ "CP-168EL series",	8, },
+	{ "CP-104EL series",	4, },
+	{ "CB-108 series",	8, },
+/*25*/	{ "CB-114 series",	4, },
+	{ "CB-134I series",	4, },
+	{ "CP-138U series",	8, },
+	{ "POS-104UL series",	4, }
+};
 
+/* driver_data correspond to the lines in the structure above
+   see also ISA probe function before you change something */
 static struct pci_device_id mxser_pcibrds[] = {
-	{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C168, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_C168_PCI},
-	{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C104, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_C104_PCI},
-	{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP132},
-	{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP114},
-	{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CT114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CT114},
-	{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102},
-	{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP104U},
-	{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP168U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP168U},
-	{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP132U},
-	{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP134U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP134U},
-	{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104JU, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP104JU},
-	{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_RC7000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_RC7000},
-	{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP118U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP118U},
-	{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102UL, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102UL},
-	{PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102U},
-	{0}
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_C168),	.driver_data = 3 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_C104),	.driver_data = 4 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132),	.driver_data = 8 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP114),	.driver_data = 9 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CT114),	.driver_data = 10 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102),	.driver_data = 11 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104U),	.driver_data = 12 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP168U),	.driver_data = 13 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132U),	.driver_data = 14 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP134U),	.driver_data = 15 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104JU),.driver_data = 16 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_RC7000),	.driver_data = 17 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118U),	.driver_data = 18 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102UL),.driver_data = 19 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102U),	.driver_data = 20 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118EL),.driver_data = 21 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP168EL),.driver_data = 22 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104EL),.driver_data = 23 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB108),	.driver_data = 24 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB114),	.driver_data = 25 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB134I),	.driver_data = 26 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP138U),	.driver_data = 27 },
+	{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_POS104UL),	.driver_data = 28 },
+	{ }
 };
-
 MODULE_DEVICE_TABLE(pci, mxser_pcibrds);
 
-
-#endif
-
-typedef struct _moxa_pci_info {
-	unsigned short busNum;
-	unsigned short devNum;
-	struct pci_dev *pdev;	/* add by Victor Yu. 06-23-2003 */
-} moxa_pci_info;
-
 static int ioaddr[MXSER_BOARDS] = { 0, 0, 0, 0 };
 static int ttymajor = MXSERMAJOR;
-static int calloutmajor = MXSERCUMAJOR;
-static int verbose = 0;
 
 /* Variables for insmod */
 
@@ -238,8 +182,6 @@ MODULE_AUTHOR("Casper Yang");
 MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver");
 module_param_array(ioaddr, int, NULL, 0);
 module_param(ttymajor, int, 0);
-module_param(calloutmajor, int, 0);
-module_param(verbose, bool, 0);
 MODULE_LICENSE("GPL");
 
 struct mxser_log {
@@ -274,67 +216,69 @@ struct mxser_mon_ext {
 	int iftype[32];
 };
 
-struct mxser_hwconf {
-	int board_type;
-	int ports;
-	int irq;
-	int vector;
-	int vector_mask;
-	int uart_type;
-	int ioaddr[MXSER_PORTS_PER_BOARD];
-	int baud_base[MXSER_PORTS_PER_BOARD];
-	moxa_pci_info pciInfo;
-	int IsMoxaMustChipFlag;	/* add by Victor Yu. 08-30-2002 */
-	int MaxCanSetBaudRate[MXSER_PORTS_PER_BOARD];	/* add by Victor Yu. 09-04-2002 */
-	int opmode_ioaddr[MXSER_PORTS_PER_BOARD];	/* add by Victor Yu. 01-05-2004 */
-};
+struct mxser_board;
+
+struct mxser_port {
+	struct mxser_board *board;
+	struct tty_struct *tty;
+
+	unsigned long ioaddr;
+	unsigned long opmode_ioaddr;
+	int max_baud;
 
-struct mxser_struct {
-	int port;
-	int base;		/* port base address */
-	int irq;		/* port using irq no. */
-	int vector;		/* port irq vector */
-	int vectormask;		/* port vector mask */
 	int rx_high_water;
 	int rx_trigger;		/* Rx fifo trigger level */
 	int rx_low_water;
 	int baud_base;		/* max. speed */
-	int flags;		/* defined in tty.h */
 	int type;		/* UART type */
-	struct tty_struct *tty;
-	int read_status_mask;
-	int ignore_status_mask;
-	int xmit_fifo_size;
-	int custom_divisor;
+	int flags;		/* defined in tty.h */
+
 	int x_char;		/* xon/xoff character */
-	int close_delay;
-	unsigned short closing_wait;
 	int IER;		/* Interrupt Enable Register */
 	int MCR;		/* Modem control register */
+
+	unsigned char stop_rx;
+	unsigned char ldisc_stop_rx;
+
+	int custom_divisor;
+	int close_delay;
+	unsigned short closing_wait;
+	unsigned char err_shadow;
 	unsigned long event;
+
 	int count;		/* # of fd on device */
 	int blocked_open;	/* # of blocked opens */
+	struct async_icount icount; /* kernel counters for 4 input interrupts */
+	int timeout;
+
+	int read_status_mask;
+	int ignore_status_mask;
+	int xmit_fifo_size;
 	unsigned char *xmit_buf;
 	int xmit_head;
 	int xmit_tail;
 	int xmit_cnt;
-	struct work_struct tqueue;
+
 	struct ktermios normal_termios;
-	struct ktermios callout_termios;
-	wait_queue_head_t open_wait;
-	wait_queue_head_t close_wait;
-	wait_queue_head_t delta_msr_wait;
-	struct async_icount icount;	/* kernel counters for the 4 input interrupts */
-	int timeout;
-	int IsMoxaMustChipFlag;	/* add by Victor Yu. 08-30-2002 */
-	int MaxCanSetBaudRate;	/* add by Victor Yu. 09-04-2002 */
-	int opmode_ioaddr;	/* add by Victor Yu. 01-05-2004 */
-	unsigned char stop_rx;
-	unsigned char ldisc_stop_rx;
-	long realbaud;
+
 	struct mxser_mon mon_data;
-	unsigned char err_shadow;
+
 	spinlock_t slock;
+	wait_queue_head_t open_wait;
+	wait_queue_head_t delta_msr_wait;
+};
+
+struct mxser_board {
+	unsigned int idx;
+	int irq;
+	const struct mxser_cardinfo *info;
+	unsigned long vector;
+	unsigned long vector_mask;
+
+	int chip_flag;
+	int uart_type;
+
+	struct mxser_port ports[MXSER_PORTS_PER_BOARD];
 };
 
 struct mxser_mstatus {
@@ -352,73 +296,16 @@ static int mxserBoardCAP[MXSER_BOARDS] = {
 	/*  0x180, 0x280, 0x200, 0x320 */
 };
 
+static struct mxser_board mxser_boards[MXSER_BOARDS];
 static struct tty_driver *mxvar_sdriver;
-static struct mxser_struct mxvar_table[MXSER_PORTS];
-static struct tty_struct *mxvar_tty[MXSER_PORTS + 1];
-static struct ktermios *mxvar_termios[MXSER_PORTS + 1];
-static struct ktermios *mxvar_termios_locked[MXSER_PORTS + 1];
 static struct mxser_log mxvar_log;
 static int mxvar_diagflag;
 static unsigned char mxser_msr[MXSER_PORTS + 1];
 static struct mxser_mon_ext mon_data_ext;
 static int mxser_set_baud_method[MXSER_PORTS + 1];
-static spinlock_t gm_lock;
-
-/*
- * This is used to figure out the divisor speeds and the timeouts
- */
-
-static struct mxser_hwconf mxsercfg[MXSER_BOARDS];
-
-/*
- * static functions:
- */
-
-static void mxser_getcfg(int board, struct mxser_hwconf *hwconf);
-static int mxser_init(void);
-
-/* static void   mxser_poll(unsigned long); */
-static int mxser_get_ISA_conf(int, struct mxser_hwconf *);
-static void mxser_do_softint(struct work_struct *);
-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 ktermios *);
-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 *);
-static void mxser_receive_chars(struct mxser_struct *, int *);
-static void mxser_transmit_chars(struct mxser_struct *);
-static void mxser_check_modem_status(struct mxser_struct *, int);
-static int mxser_block_til_ready(struct tty_struct *, struct file *, struct mxser_struct *);
-static int mxser_startup(struct mxser_struct *);
-static void mxser_shutdown(struct mxser_struct *);
-static int mxser_change_speed(struct mxser_struct *, struct ktermios *old_termios);
-static int mxser_get_serial_info(struct mxser_struct *, struct serial_struct __user *);
-static int mxser_set_serial_info(struct mxser_struct *, struct serial_struct __user *);
-static int mxser_get_lsr_info(struct mxser_struct *, unsigned int __user *);
-static void mxser_send_break(struct mxser_struct *, 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_struct *info, long newspd);
-static void mxser_wait_until_sent(struct tty_struct *tty, int timeout);
-
-static void mxser_startrx(struct tty_struct *tty);
-static void mxser_stoprx(struct tty_struct *tty);
 
 #ifdef CONFIG_PCI
-static int CheckIsMoxaMust(int io)
+static int __devinit CheckIsMoxaMust(unsigned long io)
 {
 	u8 oldmcr, hwid;
 	int i;
@@ -434,90 +321,15 @@ static int CheckIsMoxaMust(int io)
 	}
 
 	GET_MOXA_MUST_HARDWARE_ID(io, &hwid);
-	for (i = 0; i < UART_TYPE_NUM; i++) {
-		if (hwid == Gmoxa_uart_id[i])
+	for (i = 1; i < UART_INFO_NUM; i++) { /* 0 = OTHER_UART */
+		if (hwid == Gpci_uart_info[i].type)
 			return (int)hwid;
 	}
 	return MOXA_OTHER_UART;
 }
 #endif
 
-/* 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;
-
-	if (verbose)
-		printk(KERN_DEBUG "Loading module mxser ...\n");
-	ret = mxser_init();
-	if (verbose)
-		printk(KERN_DEBUG "Done.\n");
-	return ret;
-}
-
-static void __exit mxser_module_exit(void)
-{
-	int i, err;
-
-	if (verbose)
-		printk(KERN_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 (mxsercfg[i].board_type == -1)
-			continue;
-		else {
-			pdev = mxsercfg[i].pciInfo.pdev;
-			free_irq(mxsercfg[i].irq, &mxvar_table[i * MXSER_PORTS_PER_BOARD]);
-			if (pdev != NULL) {	/* PCI */
-				release_region(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2));
-				release_region(pci_resource_start(pdev, 3), pci_resource_len(pdev, 3));
-				pci_dev_put(pdev);
-			} else {
-				release_region(mxsercfg[i].ioaddr[0], 8 * mxsercfg[i].ports);
-				release_region(mxsercfg[i].vector, 1);
-			}
-		}
-	}
-	if (verbose)
-		printk(KERN_DEBUG "Done.\n");
-}
-
-static void process_txrx_fifo(struct mxser_struct *info)
+static void process_txrx_fifo(struct mxser_port *info)
 {
 	int i;
 
@@ -526,424 +338,548 @@ static void process_txrx_fifo(struct mxser_struct *info)
 		info->rx_high_water = 1;
 		info->rx_low_water = 1;
 		info->xmit_fifo_size = 1;
-	} else {
-		for (i = 0; i < UART_INFO_NUM; i++) {
-			if (info->IsMoxaMustChipFlag == Gpci_uart_info[i].type) {
+	} else
+		for (i = 0; i < UART_INFO_NUM; i++)
+			if (info->board->chip_flag == Gpci_uart_info[i].type) {
 				info->rx_trigger = Gpci_uart_info[i].rx_trigger;
 				info->rx_low_water = Gpci_uart_info[i].rx_low_water;
 				info->rx_high_water = Gpci_uart_info[i].rx_high_water;
 				info->xmit_fifo_size = Gpci_uart_info[i].xmit_fifo_size;
 				break;
 			}
-		}
-	}
 }
 
-static int mxser_initbrd(int board, struct mxser_hwconf *hwconf)
+static unsigned char mxser_get_msr(int baseaddr, int mode, int port)
 {
-	struct mxser_struct *info;
-	int retval;
-	int i, n;
+	unsigned char status = 0;
 
-	n = board * MXSER_PORTS_PER_BOARD;
-	info = &mxvar_table[n];
-	/*if (verbose) */  {
-		printk(KERN_DEBUG "        ttyMI%d - ttyMI%d ",
-			n, n + hwconf->ports - 1);
-		printk(" max. baud rate = %d bps.\n",
-			hwconf->MaxCanSetBaudRate[0]);
-	}
-
-	for (i = 0; i < hwconf->ports; i++, n++, info++) {
-		info->port = n;
-		info->base = hwconf->ioaddr[i];
-		info->irq = hwconf->irq;
-		info->vector = hwconf->vector;
-		info->vectormask = hwconf->vector_mask;
-		info->opmode_ioaddr = hwconf->opmode_ioaddr[i];	/* add by Victor Yu. 01-05-2004 */
-		info->stop_rx = 0;
-		info->ldisc_stop_rx = 0;
+	status = inb(baseaddr + UART_MSR);
 
-		info->IsMoxaMustChipFlag = hwconf->IsMoxaMustChipFlag;
-		/* Enhance mode enabled here */
-		if (info->IsMoxaMustChipFlag != MOXA_OTHER_UART) {
-			ENABLE_MOXA_MUST_ENCHANCE_MODE(info->base);
-		}
+	mxser_msr[port] &= 0x0F;
+	mxser_msr[port] |= status;
+	status = mxser_msr[port];
+	if (mode)
+		mxser_msr[port] = 0;
 
-		info->flags = ASYNC_SHARE_IRQ;
-		info->type = hwconf->uart_type;
-		info->baud_base = hwconf->baud_base[i];
+	return status;
+}
 
-		info->MaxCanSetBaudRate = hwconf->MaxCanSetBaudRate[i];
+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;
 
-		process_txrx_fifo(info);
+	/*
+	 * 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) ||
+			test_bit(TTY_IO_ERROR, &tty->flags)) {
+		port->flags |= ASYNC_NORMAL_ACTIVE;
+		return 0;
+	}
 
+	if (tty->termios->c_cflag & CLOCAL)
+		do_clocal = 1;
 
-		info->custom_divisor = hwconf->baud_base[i] * 16;
-		info->close_delay = 5 * HZ / 10;
-		info->closing_wait = 30 * HZ;
-		INIT_WORK(&info->tqueue, mxser_do_softint);
-		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);
-	}
 	/*
-	 * 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);
 
-
-	/* before set INT ISR, disable all int */
-	for (i = 0; i < hwconf->ports; i++) {
-		outb(inb(hwconf->ioaddr[i] + UART_IER) & 0xf0,
-			hwconf->ioaddr[i] + UART_IER);
+	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();
 	}
-
-	n = board * MXSER_PORTS_PER_BOARD;
-	info = &mxvar_table[n];
-
-	retval = request_irq(hwconf->irq, mxser_interrupt, IRQ_T(info),
-				"mxser", info);
-	if (retval) {
-		printk(KERN_ERR "Board %d: %s",
-			board, mxser_brdname[hwconf->board_type - 1]);
-		printk("  Request irq failed, IRQ (%d) may conflict with"
-			" another device.\n", info->irq);
+	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 void mxser_getcfg(int board, struct mxser_hwconf *hwconf)
+static int mxser_set_baud(struct mxser_port *info, long newspd)
 {
-	mxsercfg[board] = *hwconf;
-}
+	int quot = 0, baud;
+	unsigned char cval;
 
-#ifdef CONFIG_PCI
-static int mxser_get_PCI_conf(int busnum, int devnum, int board_type, struct mxser_hwconf *hwconf)
-{
-	int i, j;
-	/* unsigned int val; */
-	unsigned int ioaddress;
-	struct pci_dev *pdev = hwconf->pciInfo.pdev;
+	if (!info->tty || !info->tty->termios)
+		return -1;
 
-	/* io address */
-	hwconf->board_type = board_type;
-	hwconf->ports = mxser_numports[board_type - 1];
-	ioaddress = pci_resource_start(pdev, 2);
-	request_region(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2),
-			"mxser(IO)");
+	if (!(info->ioaddr))
+		return -1;
 
-	for (i = 0; i < hwconf->ports; i++)
-		hwconf->ioaddr[i] = ioaddress + 8 * i;
+	if (newspd > info->max_baud)
+		return -1;
 
-	/* vector */
-	ioaddress = pci_resource_start(pdev, 3);
-	request_region(pci_resource_start(pdev, 3), pci_resource_len(pdev, 3),
-			"mxser(vector)");
-	hwconf->vector = ioaddress;
+	if (newspd == 134) {
+		quot = 2 * info->baud_base / 269;
+		tty_encode_baud_rate(info->tty, 134, 134);
+	} else if (newspd) {
+		quot = info->baud_base / newspd;
+		if (quot == 0)
+			quot = 1;
+		baud = info->baud_base/quot;
+		tty_encode_baud_rate(info->tty, baud, baud);
+	} else {
+		quot = 0;
+	}
 
-	/* irq */
-	hwconf->irq = hwconf->pciInfo.pdev->irq;
+	info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base);
+	info->timeout += HZ / 50;	/* Add .02 seconds of slop */
 
-	hwconf->IsMoxaMustChipFlag = CheckIsMoxaMust(hwconf->ioaddr[0]);
-	hwconf->uart_type = PORT_16550A;
-	hwconf->vector_mask = 0;
+	if (quot) {
+		info->MCR |= UART_MCR_DTR;
+		outb(info->MCR, info->ioaddr + UART_MCR);
+	} else {
+		info->MCR &= ~UART_MCR_DTR;
+		outb(info->MCR, info->ioaddr + UART_MCR);
+		return 0;
+	}
 
+	cval = inb(info->ioaddr + UART_LCR);
 
-	for (i = 0; i < hwconf->ports; i++) {
-		for (j = 0; j < UART_INFO_NUM; j++) {
-			if (Gpci_uart_info[j].type == hwconf->IsMoxaMustChipFlag) {
-				hwconf->MaxCanSetBaudRate[i] = Gpci_uart_info[j].max_baud;
+	outb(cval | UART_LCR_DLAB, info->ioaddr + UART_LCR);	/* set DLAB */
 
-				/* exception....CP-102 */
-				if (board_type == MXSER_BOARD_CP102)
-					hwconf->MaxCanSetBaudRate[i] = 921600;
-				break;
-			}
-		}
-	}
+	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 (hwconf->IsMoxaMustChipFlag == MOXA_MUST_MU860_HWID) {
-		for (i = 0; i < hwconf->ports; i++) {
-			if (i < 4)
-				hwconf->opmode_ioaddr[i] = ioaddress + 4;
-			else
-				hwconf->opmode_ioaddr[i] = ioaddress + 0x0c;
-		}
-		outb(0, ioaddress + 4);	/* default set to RS232 mode */
-		outb(0, ioaddress + 0x0c);	/* default set to RS232 mode */
-	}
+#ifdef BOTHER
+	if (C_BAUD(info->tty) == BOTHER) {
+		quot = info->baud_base % newspd;
+		quot *= 8;
+		if (quot % newspd > newspd / 2) {
+			quot /= newspd;
+			quot++;
+		} else
+			quot /= newspd;
+
+		SET_MOXA_MUST_ENUM_VALUE(info->ioaddr, quot);
+	} else
+#endif
+		SET_MOXA_MUST_ENUM_VALUE(info->ioaddr, 0);
 
-	for (i = 0; i < hwconf->ports; i++) {
-		hwconf->vector_mask |= (1 << i);
-		hwconf->baud_base[i] = 921600;
-	}
 	return 0;
 }
-#endif
 
-static int mxser_init(void)
+/*
+ * 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 ktermios *old_termios)
 {
-	int i, m, retval, b, n;
-	struct pci_dev *pdev = NULL;
-	int index;
-	unsigned char busnum, devnum;
-	struct mxser_hwconf hwconf;
-
-	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++) {
-		mxsercfg[i].board_type = -1;
-	}
+	unsigned cflag, cval, fcr;
+	int ret = 0;
+	unsigned char status;
 
-	printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n",
-		MXSER_VERSION);
+	if (!info->tty || !info->tty->termios)
+		return ret;
+	cflag = info->tty->termios->c_cflag;
+	if (!(info->ioaddr))
+		return ret;
 
-	/* Initialize the tty_driver structure */
-	memset(mxvar_sdriver, 0, sizeof(struct tty_driver));
-	mxvar_sdriver->owner = THIS_MODULE;
-	mxvar_sdriver->magic = TTY_DRIVER_MAGIC;
-	mxvar_sdriver->name = "ttyMI";
-	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->init_termios.c_ispeed = 9600;
-	mxvar_sdriver->init_termios.c_ospeed = 9600;
-	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;
+	if (mxser_set_baud_method[info->tty->index] == 0)
+		mxser_set_baud(info, tty_get_baud_rate(info->tty));
 
-	mxvar_diagflag = 0;
-	memset(mxvar_table, 0, MXSER_PORTS * sizeof(struct mxser_struct));
-	memset(&mxvar_log, 0, sizeof(struct mxser_log));
+	/* 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;
 
-	memset(&mxser_msr, 0, sizeof(unsigned char) * (MXSER_PORTS + 1));
-	memset(&mon_data_ext, 0, sizeof(struct mxser_mon_ext));
-	memset(&mxser_set_baud_method, 0, sizeof(int) * (MXSER_PORTS + 1));
-	memset(&hwconf, 0, sizeof(struct mxser_hwconf));
+	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;
+		if (info->board->chip_flag) {
+			fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE;
+			SET_MOXA_MUST_FIFO_VALUE(info);
+		} else {
+			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;
+			}
+		}
+	}
 
-	m = 0;
-	/* Start finding ISA boards here */
-	for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
-		int cap;
-
-		if (!(cap = mxserBoardCAP[b]))
-			continue;
-
-		retval = mxser_get_ISA_conf(cap, &hwconf);
-
-		if (retval != 0)
-			printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n",
-				mxser_brdname[hwconf.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;
+	/* 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;
+		} else {
+			status = inb(info->ioaddr + UART_MSR);
+			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);
+					}
+					tty_wakeup(info->tty);
+				}
+			} 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;
 
-		hwconf.pciInfo.busNum = 0;
-		hwconf.pciInfo.devNum = 0;
-		hwconf.pciInfo.pdev = NULL;
+	info->ignore_status_mask = 0;
 
-		mxser_getcfg(m, &hwconf);
+	if (I_IGNBRK(info->tty)) {
+		info->ignore_status_mask |= UART_LSR_BI;
+		info->read_status_mask |= UART_LSR_BI;
 		/*
-		 * init mxsercfg first,
-		 * or mxsercfg data is not correct on ISR.
+		 * If we're ignore parity and break indicators, ignore
+		 * overruns too.  (For real raw support).
 		 */
-		/* mxser_initbrd will hook ISR. */
-		if (mxser_initbrd(m, &hwconf) < 0)
-			continue;
-
-		m++;
+		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;
+		}
+	}
+	if (info->board->chip_flag) {
+		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);
+		}
 	}
 
-	/* Start finding ISA boards from module arg */
-	for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
-		int cap;
 
-		if (!(cap = ioaddr[b]))
-			continue;
+	outb(fcr, info->ioaddr + UART_FCR);	/* set fcr */
+	outb(cval, info->ioaddr + UART_LCR);
 
-		retval = mxser_get_ISA_conf(cap, &hwconf);
+	return ret;
+}
 
-		if (retval != 0)
-			printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n",
-				mxser_brdname[hwconf.board_type - 1], ioaddr[b]);
+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 (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");
+	if ((port->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
+		if (status & UART_MSR_DCD)
+			wake_up_interruptible(&port->open_wait);
+	}
 
-			continue;
+	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);
+				}
+				tty_wakeup(port->tty);
+			}
+		} 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);
+				}
+			}
 		}
+	}
+}
 
-		hwconf.pciInfo.busNum = 0;
-		hwconf.pciInfo.devNum = 0;
-		hwconf.pciInfo.pdev = NULL;
+static int mxser_startup(struct mxser_port *info)
+{
+	unsigned long page;
+	unsigned long flags;
 
-		mxser_getcfg(m, &hwconf);
-		/*
-		 * init mxsercfg first,
-		 * or mxsercfg data is not correct on ISR.
-		 */
-		/* mxser_initbrd will hook ISR. */
-		if (mxser_initbrd(m, &hwconf) < 0)
-			continue;
+	page = __get_free_page(GFP_KERNEL);
+	if (!page)
+		return -ENOMEM;
+
+	spin_lock_irqsave(&info->slock, flags);
 
-		m++;
+	if (info->flags & ASYNC_INITIALIZED) {
+		free_page(page);
+		spin_unlock_irqrestore(&info->slock, flags);
+		return 0;
 	}
 
-	/* start finding PCI board here */
-#ifdef CONFIG_PCI
-	n = ARRAY_SIZE(mxser_pcibrds) - 1;
-	index = 0;
-	b = 0;
-	while (b < n) {
-		pdev = pci_get_device(mxser_pcibrds[b].vendor,
-				mxser_pcibrds[b].device, pdev);
-		if (pdev == NULL) {
-			b++;
-			continue;
-		}
-		hwconf.pciInfo.busNum = busnum = pdev->bus->number;
-		hwconf.pciInfo.devNum = devnum = PCI_SLOT(pdev->devfn) << 3;
-		hwconf.pciInfo.pdev = pdev;
-		printk(KERN_INFO "Found MOXA %s board(BusNo=%d,DevNo=%d)\n",
-			mxser_brdname[(int) (mxser_pcibrds[b].driver_data) - 1],
-			busnum, devnum >> 3);
-		index++;
-		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;
-			}
-			retval = mxser_get_PCI_conf(busnum, devnum,
-					(int)mxser_pcibrds[b].driver_data,
-					&hwconf);
-			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_getcfg(m, &hwconf);
-			/* init mxsercfg first,
-			 * or mxsercfg data is not correct on ISR.
-			 */
-			/* mxser_initbrd will hook ISR. */
-			if (mxser_initbrd(m, &hwconf) < 0)
-				continue;
-			m++;
-			/* Keep an extra reference if we succeeded. It will
-			   be returned at unload time */
-			pci_dev_get(pdev);
-		}
+	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;
 	}
-#endif
+	if (info->xmit_buf)
+		free_page(page);
+	else
+		info->xmit_buf = (unsigned char *) page;
 
-	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);
+	/*
+	 * 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);
 
-		for (i = 0; i < MXSER_BOARDS; i++) {
-			if (mxsercfg[i].board_type == -1)
-				continue;
-			else {
-				free_irq(mxsercfg[i].irq, &mxvar_table[i * MXSER_PORTS_PER_BOARD]);
-				/* todo: release io, vector */
-			}
-		}
-		return retval;
+	/*
+	 * 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;
+
+	if (info->board->chip_flag)
+		info->IER |= MOXA_MUST_IER_EGDAI;
+	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
+	 */
+	mxser_change_speed(info, NULL);
+	info->flags |= ASYNC_INITIALIZED;
+	spin_unlock_irqrestore(&info->slock, flags);
+
 	return 0;
 }
 
-static void mxser_do_softint(struct work_struct *work)
+/*
+ * 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)
 {
-	struct mxser_struct *info =
-		container_of(work, struct mxser_struct, tqueue);
-	struct tty_struct *tty;
+	unsigned long flags;
+
+	if (!(info->flags & ASYNC_INITIALIZED))
+		return;
 
-	tty = info->tty;
+	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);
 
-	if (tty) {
-		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);
+	/*
+	 * Free the IRQ, if necessary
+	 */
+	if (info->xmit_buf) {
+		free_page((unsigned long) info->xmit_buf);
+		info->xmit_buf = NULL;
 	}
-}
 
-static unsigned char mxser_get_msr(int baseaddr, int mode, int port, struct mxser_struct *info)
-{
-	unsigned char status = 0;
+	info->IER = 0;
+	outb(0x00, info->ioaddr + UART_IER);
 
-	status = inb(baseaddr + UART_MSR);
+	if (!info->tty || (info->tty->termios->c_cflag & HUPCL))
+		info->MCR &= ~(UART_MCR_DTR | UART_MCR_RTS);
+	outb(info->MCR, info->ioaddr + UART_MCR);
 
-	mxser_msr[port] &= 0x0F;
-	mxser_msr[port] |= status;
-	status = mxser_msr[port];
-	if (mode)
-		mxser_msr[port] = 0;
+	/* clear Rx/Tx FIFO's */
+	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);
 
-	return status;
+	/* 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;
+
+	if (info->board->chip_flag)
+		SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->ioaddr);
+
+	spin_unlock_irqrestore(&info->slock, flags);
 }
 
 /*
@@ -954,19 +890,17 @@ static unsigned char mxser_get_msr(int baseaddr, int mode, int port, struct mxse
  */
 static int mxser_open(struct tty_struct *tty, struct file *filp)
 {
-	struct mxser_struct *info;
+	struct mxser_port *info;
+	unsigned long flags;
 	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 = mxvar_table + line;
-	if (!info->base)
+	info = &mxser_boards[line / MXSER_PORTS_PER_BOARD].ports[line % MXSER_PORTS_PER_BOARD];
+	if (!info->ioaddr)
 		return -ENODEV;
 
 	tty->driver_data = info;
@@ -974,6 +908,9 @@ static int mxser_open(struct tty_struct *tty, struct file *filp)
 	/*
 	 * Start up serial port
 	 */
+	spin_lock_irqsave(&info->slock, flags);
+	info->count++;
+	spin_unlock_irqrestore(&info->slock, flags);
 	retval = mxser_startup(info);
 	if (retval)
 		return retval;
@@ -982,21 +919,6 @@ static int mxser_open(struct tty_struct *tty, struct file *filp)
 	if (retval)
 		return retval;
 
-	info->count++;
-
-	if ((info->count == 1) && (info->flags & ASYNC_SPLIT_TERMIOS)) {
-		if (tty->driver->subtype == SERIAL_TYPE_NORMAL)
-			*tty->termios = info->normal_termios;
-		else
-			*tty->termios = info->callout_termios;
-		mxser_change_speed(info, NULL);
-	}
-
-	/*
-	status = mxser_get_msr(info->base, 0, info->port);
-	mxser_check_modem_status(info, status);
-	*/
-
 	/* unmark here for very high baud rate (ex. 921600 bps) used */
 	tty->low_latency = 1;
 	return 0;
@@ -1010,11 +932,10 @@ static int mxser_open(struct tty_struct *tty, struct file *filp)
  */
 static void mxser_close(struct tty_struct *tty, struct file *filp)
 {
-	struct mxser_struct *info = tty->driver_data;
+	struct mxser_port *info = tty->driver_data;
 
 	unsigned long timeout;
 	unsigned long flags;
-	struct tty_ldisc *ld;
 
 	if (tty->index == MXSER_PORTS)
 		return;
@@ -1041,7 +962,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
 	}
 	if (--info->count < 0) {
 		printk(KERN_ERR "mxser_close: bad serial port count for "
-			"ttys%d: %d\n", info->port, info->count);
+			"ttys%d: %d\n", tty->index, info->count);
 		info->count = 0;
 	}
 	if (info->count) {
@@ -1070,20 +991,18 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
 	 * line status register.
 	 */
 	info->IER &= ~UART_IER_RLSI;
-	if (info->IsMoxaMustChipFlag)
+	if (info->board->chip_flag)
 		info->IER &= ~MOXA_MUST_RECV_ISR;
-/* by William
-	info->read_status_mask &= ~UART_LSR_DR;
-*/
+
 	if (info->flags & ASYNC_INITIALIZED) {
-		outb(info->IER, info->base + UART_IER);
+		outb(info->IER, info->ioaddr + UART_IER);
 		/*
 		 * Before we drop DTR, make sure the UART transmitter
 		 * has completely drained; this is especially
 		 * important if there is a transmit FIFO!
 		 */
 		timeout = jiffies + HZ;
-		while (!(inb(info->base + UART_LSR) & UART_LSR_TEMT)) {
+		while (!(inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT)) {
 			schedule_timeout_interruptible(5);
 			if (time_after(jiffies, timeout))
 				break;
@@ -1093,14 +1012,9 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
 
 	if (tty->driver->flush_buffer)
 		tty->driver->flush_buffer(tty);
-		
-	ld = tty_ldisc_ref(tty);
-	if (ld) {
-		if (ld->flush_buffer)
-			ld->flush_buffer(tty);
-		tty_ldisc_deref(ld);
-	}
-		
+
+	tty_ldisc_flush(tty);
+
 	tty->closing = 0;
 	info->event = 0;
 	info->tty = NULL;
@@ -1111,14 +1025,12 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
 	}
 
 	info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
-	wake_up_interruptible(&info->close_wait);
-
 }
 
 static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count)
 {
 	int c, total = 0;
-	struct mxser_struct *info = tty->driver_data;
+	struct mxser_port *info = tty->driver_data;
 	unsigned long flags;
 
 	if (!info->xmit_buf)
@@ -1142,13 +1054,15 @@ static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int cou
 		total += c;
 	}
 
-	if (info->xmit_cnt && !tty->stopped && !(info->IER & UART_IER_THRI)) {
+	if (info->xmit_cnt && !tty->stopped) {
 		if (!tty->hw_stopped ||
 				(info->type == PORT_16550A) ||
-				(info->IsMoxaMustChipFlag)) {
+				(info->board->chip_flag)) {
 			spin_lock_irqsave(&info->slock, flags);
+			outb(info->IER & ~UART_IER_THRI, info->ioaddr +
+					UART_IER);
 			info->IER |= UART_IER_THRI;
-			outb(info->IER, info->base + UART_IER);
+			outb(info->IER, info->ioaddr + UART_IER);
 			spin_unlock_irqrestore(&info->slock, flags);
 		}
 	}
@@ -1157,7 +1071,7 @@ static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int cou
 
 static void mxser_put_char(struct tty_struct *tty, unsigned char ch)
 {
-	struct mxser_struct *info = tty->driver_data;
+	struct mxser_port *info = tty->driver_data;
 	unsigned long flags;
 
 	if (!info->xmit_buf)
@@ -1171,13 +1085,14 @@ static void mxser_put_char(struct tty_struct *tty, unsigned char ch)
 	info->xmit_head &= SERIAL_XMIT_SIZE - 1;
 	info->xmit_cnt++;
 	spin_unlock_irqrestore(&info->slock, flags);
-	if (!tty->stopped && !(info->IER & UART_IER_THRI)) {
+	if (!tty->stopped) {
 		if (!tty->hw_stopped ||
 				(info->type == PORT_16550A) ||
-				info->IsMoxaMustChipFlag) {
+				info->board->chip_flag) {
 			spin_lock_irqsave(&info->slock, flags);
+			outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER);
 			info->IER |= UART_IER_THRI;
-			outb(info->IER, info->base + UART_IER);
+			outb(info->IER, info->ioaddr + UART_IER);
 			spin_unlock_irqrestore(&info->slock, flags);
 		}
 	}
@@ -1186,7 +1101,7 @@ static void mxser_put_char(struct tty_struct *tty, unsigned char ch)
 
 static void mxser_flush_chars(struct tty_struct *tty)
 {
-	struct mxser_struct *info = tty->driver_data;
+	struct mxser_port *info = tty->driver_data;
 	unsigned long flags;
 
 	if (info->xmit_cnt <= 0 ||
@@ -1194,21 +1109,22 @@ static void mxser_flush_chars(struct tty_struct *tty)
 			!info->xmit_buf ||
 			(tty->hw_stopped &&
 			 (info->type != PORT_16550A) &&
-			 (!info->IsMoxaMustChipFlag)
+			 (!info->board->chip_flag)
 			))
 		return;
 
 	spin_lock_irqsave(&info->slock, flags);
 
+	outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER);
 	info->IER |= UART_IER_THRI;
-	outb(info->IER, info->base + UART_IER);
+	outb(info->IER, info->ioaddr + UART_IER);
 
 	spin_unlock_irqrestore(&info->slock, flags);
 }
 
 static int mxser_write_room(struct tty_struct *tty)
 {
-	struct mxser_struct *info = tty->driver_data;
+	struct mxser_port *info = tty->driver_data;
 	int ret;
 
 	ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
@@ -1219,13 +1135,13 @@ static int mxser_write_room(struct tty_struct *tty)
 
 static int mxser_chars_in_buffer(struct tty_struct *tty)
 {
-	struct mxser_struct *info = tty->driver_data;
+	struct mxser_port *info = tty->driver_data;
 	return info->xmit_cnt;
 }
 
 static void mxser_flush_buffer(struct tty_struct *tty)
 {
-	struct mxser_struct *info = tty->driver_data;
+	struct mxser_port *info = tty->driver_data;
 	char fcr;
 	unsigned long flags;
 
@@ -1233,39 +1149,491 @@ static void mxser_flush_buffer(struct tty_struct *tty)
 	spin_lock_irqsave(&info->slock, flags);
 	info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
 
-	/* below added by shinhay */
-	fcr = inb(info->base + UART_FCR);
+	fcr = inb(info->ioaddr + UART_FCR);
 	outb((fcr | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT),
-		info->base + UART_FCR);
-	outb(fcr, info->base + UART_FCR);
+		info->ioaddr + UART_FCR);
+	outb(fcr, info->ioaddr + UART_FCR);
 
 	spin_unlock_irqrestore(&info->slock, flags);
-	/* above added by shinhay */
 
 	tty_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 serial_struct tmp = {
+		.type = info->type,
+		.line = info->tty->index,
+		.port = info->ioaddr,
+		.irq = info->board->irq,
+		.flags = info->flags,
+		.baud_base = info->baud_base,
+		.close_delay = info->close_delay,
+		.closing_wait = info->closing_wait,
+		.custom_divisor = info->custom_divisor,
+		.hub6 = 0
+	};
+	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+		return -EFAULT;
+	return 0;
+}
+
+static int mxser_set_serial_info(struct mxser_port *info,
+		struct serial_struct __user *new_info)
 {
-	struct mxser_struct *info = tty->driver_data;
-	int retval;
-	struct async_icount cprev, cnow;	/* kernel counter temps */
+	struct serial_struct new_serial;
+	unsigned long sl_flags;
+	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;
+
+	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 {
+		/*
+		 * 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->type = new_serial.type;
+
+	process_txrx_fifo(info);
+
+	if (info->flags & ASYNC_INITIALIZED) {
+		if (flags != (info->flags & ASYNC_SPD_MASK)) {
+			spin_lock_irqsave(&info->slock, sl_flags);
+			mxser_change_speed(info, NULL);
+			spin_unlock_irqrestore(&info->slock, sl_flags);
+		}
+	} else
+		retval = mxser_startup(info);
+
+	return retval;
+}
+
+/*
+ * 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;
+
+	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);
+}
+
+/*
+ * 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 (!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);
+}
+
+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;
+
+
+	if (tty->index == MXSER_PORTS)
+		return -ENOIOCTLCMD;
+	if (test_bit(TTY_IO_ERROR, &tty->flags))
+		return -EIO;
+
+	control = info->MCR;
+
+	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);
+}
+
+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 (tty->index == MXSER_PORTS)
+		return -ENOIOCTLCMD;
+	if (test_bit(TTY_IO_ERROR, &tty->flags))
+		return -EIO;
+
+	spin_lock_irqsave(&info->slock, flags);
+
+	if (set & TIOCM_RTS)
+		info->MCR |= UART_MCR_RTS;
+	if (set & TIOCM_DTR)
+		info->MCR |= UART_MCR_DTR;
+
+	if (clear & TIOCM_RTS)
+		info->MCR &= ~UART_MCR_RTS;
+	if (clear & TIOCM_DTR)
+		info->MCR &= ~UART_MCR_DTR;
+
+	outb(info->MCR, info->ioaddr + UART_MCR);
+	spin_unlock_irqrestore(&info->slock, flags);
+	return 0;
+}
+
+static int __init mxser_program_mode(int port)
+{
+	int id, i, j, n;
+
+	outb(0, port);
+	outb(0, port);
+	outb(0, port);
+	(void)inb(port);
+	(void)inb(port);
+	outb(0, port);
+	(void)inb(port);
+
+	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 __init 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 __init 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;
+}
+
+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_MAJOR:
+		return put_user(ttymajor, (int __user *)argp);
+
+	case MOXA_CHKPORTENABLE:
+		result = 0;
+
+		for (i = 0; i < MXSER_BOARDS; i++)
+			for (j = 0; j < MXSER_PORTS_PER_BOARD; j++)
+				if (mxser_boards[i].ports[j].ioaddr)
+					result |= (1 << i);
+
+		return put_user(result, (unsigned long __user *)argp);
+	case MOXA_GETDATACOUNT:
+		if (copy_to_user(argp, &mxvar_log, sizeof(mxvar_log)))
+			return -EFAULT;
+		return 0;
+	case MOXA_GETMSTATUS:
+		for (i = 0; i < MXSER_BOARDS; i++)
+			for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) {
+				port = &mxser_boards[i].ports[j];
+
+				GMStatus[i].ri = 0;
+				if (!port->ioaddr) {
+					GMStatus[i].dcd = 0;
+					GMStatus[i].dsr = 0;
+					GMStatus[i].cts = 0;
+					continue;
+				}
+
+				if (!port->tty || !port->tty->termios)
+					GMStatus[i].cflag =
+						port->normal_termios.c_cflag;
+				else
+					GMStatus[i].cflag =
+						port->tty->termios->c_cflag;
+
+				status = inb(port->ioaddr + UART_MSR);
+				if (status & 0x80 /*UART_MSR_DCD */ )
+					GMStatus[i].dcd = 1;
+				else
+					GMStatus[i].dcd = 0;
+
+				if (status & 0x20 /*UART_MSR_DSR */ )
+					GMStatus[i].dsr = 1;
+				else
+					GMStatus[i].dsr = 0;
+
+
+				if (status & 0x10 /*UART_MSR_CTS */ )
+					GMStatus[i].cts = 1;
+				else
+					GMStatus[i].cts = 0;
+			}
+		if (copy_to_user(argp, GMStatus,
+				sizeof(struct mxser_mstatus) * MXSER_PORTS))
+			return -EFAULT;
+		return 0;
+	case MOXA_ASPP_MON_EXT: {
+		int p, shiftbit;
+		unsigned long opmode;
+		unsigned cflag, iflag;
+
+		for (i = 0; i < MXSER_BOARDS; i++)
+			for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) {
+				port = &mxser_boards[i].ports[j];
+				if (!port->ioaddr)
+					continue;
+
+				status = mxser_get_msr(port->ioaddr, 0, i);
+
+				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;
+				mon_data_ext.rx_cnt[i] = port->mon_data.rxcnt;
+				mon_data_ext.tx_cnt[i] = port->mon_data.txcnt;
+				mon_data_ext.up_rxcnt[i] =
+					port->mon_data.up_rxcnt;
+				mon_data_ext.up_txcnt[i] =
+					port->mon_data.up_txcnt;
+				mon_data_ext.modem_status[i] =
+					port->mon_data.modem_status;
+				mon_data_ext.baudrate[i] =
+					tty_get_baud_rate(port->tty);
+
+				if (!port->tty || !port->tty->termios) {
+					cflag = port->normal_termios.c_cflag;
+					iflag = port->normal_termios.c_iflag;
+				} else {
+					cflag = port->tty->termios->c_cflag;
+					iflag = port->tty->termios->c_iflag;
+				}
+
+				mon_data_ext.databits[i] = cflag & CSIZE;
+
+				mon_data_ext.stopbits[i] = cflag & CSTOPB;
+
+				mon_data_ext.parity[i] =
+					cflag & (PARENB | PARODD | CMSPAR);
+
+				mon_data_ext.flowctrl[i] = 0x00;
+
+				if (cflag & CRTSCTS)
+					mon_data_ext.flowctrl[i] |= 0x03;
+
+				if (iflag & (IXON | IXOFF))
+					mon_data_ext.flowctrl[i] |= 0x0C;
+
+				if (port->type == PORT_16550A)
+					mon_data_ext.fifo[i] = 1;
+				else
+					mon_data_ext.fifo[i] = 0;
+
+				p = i % 4;
+				shiftbit = p * 2;
+				opmode = inb(port->opmode_ioaddr) >> shiftbit;
+				opmode &= OP_MODE_MASK;
+
+				mon_data_ext.iftype[i] = opmode;
+
+			}
+			if (copy_to_user(argp, &mon_data_ext,
+						sizeof(mon_data_ext)))
+				return -EFAULT;
+
+			return 0;
+
+	} default:
+		return -ENOIOCTLCMD;
+	}
+	return 0;
+}
+
+static int mxser_cflags_changed(struct mxser_port *info, unsigned long arg,
+		struct async_icount *cprev)
+{
+	struct async_icount cnow;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&info->slock, flags);
+	cnow = info->icount;	/* atomic copy */
+	spin_unlock_irqrestore(&info->slock, flags);
+
+	ret =	((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));
+
+	*cprev = cnow;
+
+	return ret;
+}
+
+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 cnow;
 	struct serial_icounter_struct __user *p_cuser;
-	unsigned long templ;
 	unsigned long flags;
 	void __user *argp = (void __user *)arg;
+	int retval;
 
 	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 opmode, p;
+		int p;
+		unsigned long opmode;
 		static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f };
 		int shiftbit;
 		unsigned char val, mask;
 
-		p = info->port % 4;
+		p = tty->index % 4;
 		if (cmd == MOXA_SET_OP_MODE) {
 			if (get_user(opmode, (int __user *) argp))
 				return -EFAULT;
@@ -1284,17 +1652,16 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int c
 			shiftbit = p * 2;
 			opmode = inb(info->opmode_ioaddr) >> shiftbit;
 			opmode &= OP_MODE_MASK;
-			if (copy_to_user(argp, &opmode, sizeof(int)))
+			if (put_user(opmode, (int __user *)argp))
 				return -EFAULT;
 		}
 		return 0;
 	}
-	/* above add by Victor Yu. 01-05-2004 */
 
-	if ((cmd != TIOCGSERIAL) && (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
-		if (tty->flags & (1 << TTY_IO_ERROR))
-			return -EIO;
-	}
+	if (cmd != TIOCGSERIAL && cmd != TIOCMIWAIT && cmd != TIOCGICOUNT &&
+			test_bit(TTY_IO_ERROR, &tty->flags))
+		return -EIO;
+
 	switch (cmd) {
 	case TCSBRK:		/* SVID version: non-zero arg --> no break */
 		retval = tty_check_change(tty);
@@ -1312,11 +1679,10 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int c
 		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);
+		return put_user(!!C_CLOCAL(tty), (unsigned long __user *)argp);
 	case TIOCSSOFTCAR:
-		if (get_user(templ, (unsigned long __user *) argp))
+		if (get_user(arg, (unsigned long __user *)argp))
 			return -EFAULT;
-		arg = templ;
 		tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0));
 		return 0;
 	case TIOCGSERIAL:
@@ -1336,30 +1702,19 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int c
 		cnow = info->icount;	/* note the counters on entry */
 		spin_unlock_irqrestore(&info->slock, flags);
 
-		wait_event_interruptible(info->delta_msr_wait, ({
-			cprev = cnow;
-			spin_lock_irqsave(&info->slock, flags);
-			cnow = info->icount;	/* atomic copy */
-			spin_unlock_irqrestore(&info->slock, flags);
-
-			((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));
-		}));
-		break;
-		/*
-		 * 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.
-		 */
+		return wait_event_interruptible(info->delta_msr_wait,
+				mxser_cflags_changed(info, arg, &cnow));
+	/*
+	 * 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))
@@ -1381,241 +1736,65 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int c
 		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;
-			if (mxser_set_baud(info, baud) == -1)
-				return -1;
-			return 0;
-		}
-	case MOXA_ASPP_GETBAUD:
-		if (copy_to_user(argp, &info->realbaud, sizeof(long)))
-			return -EFAULT;
-
+	case MOXA_SDS_RSTICOUNTER:
+		info->mon_data.rxcnt = 0;
+		info->mon_data.txcnt = 0;
 		return 0;
 
 	case MOXA_ASPP_OQUEUE:{
-			int len, lsr;
+		int len, lsr;
 
-			len = mxser_chars_in_buffer(tty);
+		len = mxser_chars_in_buffer(tty);
 
-			lsr = inb(info->base + UART_LSR) & UART_LSR_TEMT;
+		lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT;
 
-			len += (lsr ? 0 : 1);
+		len += (lsr ? 0 : 1);
 
-			if (copy_to_user(argp, &len, sizeof(int)))
-				return -EFAULT;
-
-			return 0;
-		}
+		return put_user(len, (int __user *)argp);
+	}
 	case MOXA_ASPP_MON: {
-			int mcr, status;
-
-			/* info->mon_data.ser_param = tty->termios->c_cflag; */
+		int mcr, status;
 
-			status = mxser_get_msr(info->base, 1, info->port, info);
-			mxser_check_modem_status(info, status);
-
-			mcr = inb(info->base + 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[info->port] = method;
-			if (copy_to_user(argp, &method, sizeof(int)))
-				return -EFAULT;
+		status = mxser_get_msr(info->ioaddr, 1, tty->index);
+		mxser_check_modem_status(info, status);
 
-			return 0;
-		}
-	default:
-		return -ENOIOCTLCMD;
-	}
-	return 0;
-}
+		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;
 
-#ifndef CMSPAR
-#define	CMSPAR 010000000000
-#endif
+		if (mcr & MOXA_MUST_MCR_TX_XON)
+			info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFXENT;
+		else
+			info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFXENT;
 
-static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
-{
-	int i, result, status;
+		if (info->tty->hw_stopped)
+			info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD;
+		else
+			info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD;
 
-	switch (cmd) {
-	case MOXA_GET_CONF:
-		if (copy_to_user(argp, mxsercfg,
-				sizeof(struct mxser_hwconf) * 4))
+		if (copy_to_user(argp, &info->mon_data,
+				sizeof(struct mxser_mon)))
 			return -EFAULT;
-		return 0;
-	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;
-
-	case MOXA_CHKPORTENABLE:
-		result = 0;
-		for (i = 0; i < MXSER_PORTS; i++) {
-			if (mxvar_table[i].base)
-				result |= (1 << i);
-		}
-		return put_user(result, (unsigned long __user *)argp);
-	case MOXA_GETDATACOUNT:
-		if (copy_to_user(argp, &mxvar_log, sizeof(mxvar_log)))
+	}
+	case MOXA_ASPP_LSTATUS: {
+		if (put_user(info->err_shadow, (unsigned char __user *)argp))
 			return -EFAULT;
-		return 0;
-	case MOXA_GETMSTATUS:
-		for (i = 0; i < MXSER_PORTS; i++) {
-			GMStatus[i].ri = 0;
-			if (!mxvar_table[i].base) {
-				GMStatus[i].dcd = 0;
-				GMStatus[i].dsr = 0;
-				GMStatus[i].cts = 0;
-				continue;
-			}
-
-			if (!mxvar_table[i].tty || !mxvar_table[i].tty->termios)
-				GMStatus[i].cflag = mxvar_table[i].normal_termios.c_cflag;
-			else
-				GMStatus[i].cflag = mxvar_table[i].tty->termios->c_cflag;
-
-			status = inb(mxvar_table[i].base + UART_MSR);
-			if (status & 0x80 /*UART_MSR_DCD */ )
-				GMStatus[i].dcd = 1;
-			else
-				GMStatus[i].dcd = 0;
-
-			if (status & 0x20 /*UART_MSR_DSR */ )
-				GMStatus[i].dsr = 1;
-			else
-				GMStatus[i].dsr = 0;
-
 
-			if (status & 0x10 /*UART_MSR_CTS */ )
-				GMStatus[i].cts = 1;
-			else
-				GMStatus[i].cts = 0;
-		}
-		if (copy_to_user(argp, GMStatus,
-				sizeof(struct mxser_mstatus) * MXSER_PORTS))
-			return -EFAULT;
+		info->err_shadow = 0;
 		return 0;
-	case MOXA_ASPP_MON_EXT: {
-			int status;
-			int opmode, p;
-			int shiftbit;
-			unsigned cflag, iflag;
-
-			for (i = 0; i < MXSER_PORTS; i++) {
-				if (!mxvar_table[i].base)
-					continue;
-
-				status = mxser_get_msr(mxvar_table[i].base, 0,
-							i, &(mxvar_table[i]));
-				/*
-				mxser_check_modem_status(&mxvar_table[i],
-								status);
-				*/
-				if (status & UART_MSR_TERI)
-					mxvar_table[i].icount.rng++;
-				if (status & UART_MSR_DDSR)
-					mxvar_table[i].icount.dsr++;
-				if (status & UART_MSR_DDCD)
-					mxvar_table[i].icount.dcd++;
-				if (status & UART_MSR_DCTS)
-					mxvar_table[i].icount.cts++;
-
-				mxvar_table[i].mon_data.modem_status = status;
-				mon_data_ext.rx_cnt[i] = mxvar_table[i].mon_data.rxcnt;
-				mon_data_ext.tx_cnt[i] = mxvar_table[i].mon_data.txcnt;
-				mon_data_ext.up_rxcnt[i] = mxvar_table[i].mon_data.up_rxcnt;
-				mon_data_ext.up_txcnt[i] = mxvar_table[i].mon_data.up_txcnt;
-				mon_data_ext.modem_status[i] = mxvar_table[i].mon_data.modem_status;
-				mon_data_ext.baudrate[i] = mxvar_table[i].realbaud;
-
-				if (!mxvar_table[i].tty || !mxvar_table[i].tty->termios) {
-					cflag = mxvar_table[i].normal_termios.c_cflag;
-					iflag = mxvar_table[i].normal_termios.c_iflag;
-				} else {
-					cflag = mxvar_table[i].tty->termios->c_cflag;
-					iflag = mxvar_table[i].tty->termios->c_iflag;
-				}
-
-				mon_data_ext.databits[i] = cflag & CSIZE;
-
-				mon_data_ext.stopbits[i] = cflag & CSTOPB;
-
-				mon_data_ext.parity[i] = cflag & (PARENB | PARODD | CMSPAR);
-
-				mon_data_ext.flowctrl[i] = 0x00;
-
-				if (cflag & CRTSCTS)
-					mon_data_ext.flowctrl[i] |= 0x03;
-
-				if (iflag & (IXON | IXOFF))
-					mon_data_ext.flowctrl[i] |= 0x0C;
-
-				if (mxvar_table[i].type == PORT_16550A)
-					mon_data_ext.fifo[i] = 1;
-				else
-					mon_data_ext.fifo[i] = 0;
-
-				p = i % 4;
-				shiftbit = p * 2;
-				opmode = inb(mxvar_table[i].opmode_ioaddr) >> shiftbit;
-				opmode &= OP_MODE_MASK;
-
-				mon_data_ext.iftype[i] = opmode;
-
-			}
-			if (copy_to_user(argp, &mon_data_ext, sizeof(struct mxser_mon_ext)))
-				return -EFAULT;
-
-			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;
+		return put_user(method, (int __user *)argp);
+	}
 	default:
 		return -ENOIOCTLCMD;
 	}
@@ -1624,107 +1803,105 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
 
 static void mxser_stoprx(struct tty_struct *tty)
 {
-	struct mxser_struct *info = tty->driver_data;
-	/* unsigned long flags; */
+	struct mxser_port *info = tty->driver_data;
 
 	info->ldisc_stop_rx = 1;
 	if (I_IXOFF(tty)) {
-		/* MX_LOCK(&info->slock); */
-		/* following add by Victor Yu. 09-02-2002 */
-		if (info->IsMoxaMustChipFlag) {
+		if (info->board->chip_flag) {
 			info->IER &= ~MOXA_MUST_RECV_ISR;
-			outb(info->IER, info->base + UART_IER);
+			outb(info->IER, info->ioaddr + UART_IER);
 		} else {
-			/* above add by Victor Yu. 09-02-2002 */
 			info->x_char = STOP_CHAR(tty);
-			/* mask by Victor Yu. 09-02-2002 */
-			/* outb(info->IER, 0); */
-			outb(0, info->base + UART_IER);
+			outb(0, info->ioaddr + UART_IER);
 			info->IER |= UART_IER_THRI;
-			/* force Tx interrupt */
-			outb(info->IER, info->base + UART_IER);
-		}		/* add by Victor Yu. 09-02-2002 */
-		/* MX_UNLOCK(&info->slock); */
+			outb(info->IER, info->ioaddr + UART_IER);
+		}
 	}
 
 	if (info->tty->termios->c_cflag & CRTSCTS) {
-		/* MX_LOCK(&info->slock); */
 		info->MCR &= ~UART_MCR_RTS;
-		outb(info->MCR, info->base + UART_MCR);
-		/* MX_UNLOCK(&info->slock); */
+		outb(info->MCR, info->ioaddr + UART_MCR);
 	}
 }
 
-static void mxser_startrx(struct tty_struct *tty)
+/*
+ * 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_struct *info = tty->driver_data;
-	/* unsigned long flags; */
+	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 {
-			/* MX_LOCK(&info->slock); */
-
-			/* following add by Victor Yu. 09-02-2002 */
-			if (info->IsMoxaMustChipFlag) {
+			if (info->board->chip_flag) {
 				info->IER |= MOXA_MUST_RECV_ISR;
-				outb(info->IER, info->base + UART_IER);
+				outb(info->IER, info->ioaddr + UART_IER);
 			} else {
-				/* above add by Victor Yu. 09-02-2002 */
-
 				info->x_char = START_CHAR(tty);
-				/* mask by Victor Yu. 09-02-2002 */
-				/* outb(info->IER, 0); */
-				/* add by Victor Yu. 09-02-2002 */
-				outb(0, info->base + UART_IER);
-				/* force Tx interrupt */
+				outb(0, info->ioaddr + UART_IER);
 				info->IER |= UART_IER_THRI;
-				outb(info->IER, info->base + UART_IER);
-			}	/* add by Victor Yu. 09-02-2002 */
-			/* MX_UNLOCK(&info->slock); */
+				outb(info->IER, info->ioaddr + UART_IER);
+			}
 		}
 	}
 
 	if (info->tty->termios->c_cflag & CRTSCTS) {
-		/* MX_LOCK(&info->slock); */
 		info->MCR |= UART_MCR_RTS;
-		outb(info->MCR, info->base + UART_MCR);
-		/* MX_UNLOCK(&info->slock); */
+		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.
+ * mxser_stop() and mxser_start()
+ *
+ * This routines are called before setting or resetting tty->stopped.
+ * They enable or disable transmitter interrupts, as necessary.
  */
-static void mxser_throttle(struct tty_struct *tty)
+static void mxser_stop(struct tty_struct *tty)
 {
-	/* struct mxser_struct *info = tty->driver_data; */
-	/* unsigned long flags; */
+	struct mxser_port *info = tty->driver_data;
+	unsigned long flags;
 
-	/* MX_LOCK(&info->slock); */
-	mxser_stoprx(tty);
-	/* MX_UNLOCK(&info->slock); */
+	spin_lock_irqsave(&info->slock, flags);
+	if (info->IER & UART_IER_THRI) {
+		info->IER &= ~UART_IER_THRI;
+		outb(info->IER, info->ioaddr + UART_IER);
+	}
+	spin_unlock_irqrestore(&info->slock, flags);
 }
 
-static void mxser_unthrottle(struct tty_struct *tty)
+static void mxser_start(struct tty_struct *tty)
 {
-	/* struct mxser_struct *info = tty->driver_data; */
-	/* unsigned long flags; */
+	struct mxser_port *info = tty->driver_data;
+	unsigned long flags;
 
-	/* MX_LOCK(&info->slock); */
-	mxser_startrx(tty);
-	/* MX_UNLOCK(&info->slock); */
+	spin_lock_irqsave(&info->slock, flags);
+	if (info->xmit_cnt && info->xmit_buf) {
+		outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER);
+		info->IER |= UART_IER_THRI;
+		outb(info->IER, info->ioaddr + UART_IER);
+	}
+	spin_unlock_irqrestore(&info->slock, flags);
 }
 
 static void mxser_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
 {
-	struct mxser_struct *info = tty->driver_data;
+	struct mxser_port *info = tty->driver_data;
 	unsigned long flags;
 
+	spin_lock_irqsave(&info->slock, flags);
 	mxser_change_speed(info, old_termios);
+	spin_unlock_irqrestore(&info->slock, flags);
 
 	if ((old_termios->c_cflag & CRTSCTS) &&
 			!(tty->termios->c_cflag & CRTSCTS)) {
@@ -1732,61 +1909,27 @@ static void mxser_set_termios(struct tty_struct *tty, struct ktermios *old_termi
 		mxser_start(tty);
 	}
 
-/* Handle sw stopped */
+	/* 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->IsMoxaMustChipFlag) {
+		if (info->board->chip_flag) {
 			spin_lock_irqsave(&info->slock, flags);
-			DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->base);
+			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_stop() and mxser_start()
- *
- * This routines are called before setting or resetting tty->stopped.
- * They enable or disable transmitter interrupts, as necessary.
- */
-static void mxser_stop(struct tty_struct *tty)
-{
-	struct mxser_struct *info = tty->driver_data;
-	unsigned long flags;
-
-	spin_lock_irqsave(&info->slock, flags);
-	if (info->IER & UART_IER_THRI) {
-		info->IER &= ~UART_IER_THRI;
-		outb(info->IER, info->base + UART_IER);
-	}
-	spin_unlock_irqrestore(&info->slock, flags);
-}
-
-static void mxser_start(struct tty_struct *tty)
-{
-	struct mxser_struct *info = tty->driver_data;
-	unsigned long flags;
-
-	spin_lock_irqsave(&info->slock, flags);
-	if (info->xmit_cnt && info->xmit_buf && !(info->IER & UART_IER_THRI)) {
-		info->IER |= UART_IER_THRI;
-		outb(info->IER, info->base + UART_IER);
-	}
-	spin_unlock_irqrestore(&info->slock, flags);
-}
-
-/*
  * mxser_wait_until_sent() --- wait until the transmitter is empty
  */
 static void mxser_wait_until_sent(struct tty_struct *tty, int timeout)
 {
-	struct mxser_struct *info = tty->driver_data;
+	struct mxser_port *info = tty->driver_data;
 	unsigned long orig_jiffies, char_time;
 	int lsr;
 
@@ -1827,7 +1970,7 @@ static void mxser_wait_until_sent(struct tty_struct *tty, int timeout)
 		timeout, char_time);
 	printk("jiff=%lu...", jiffies);
 #endif
-	while (!((lsr = inb(info->base + UART_LSR)) & UART_LSR_TEMT)) {
+	while (!((lsr = inb(info->ioaddr + UART_LSR)) & UART_LSR_TEMT)) {
 #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
 		printk("lsr = %d (jiff=%lu)...", lsr, jiffies);
 #endif
@@ -1844,13 +1987,12 @@ static void mxser_wait_until_sent(struct tty_struct *tty, int timeout)
 #endif
 }
 
-
 /*
  * This routine is called by tty_hangup() when a hangup is signaled.
  */
-void mxser_hangup(struct tty_struct *tty)
+static void mxser_hangup(struct tty_struct *tty)
 {
-	struct mxser_struct *info = tty->driver_data;
+	struct mxser_port *info = tty->driver_data;
 
 	mxser_flush_buffer(tty);
 	mxser_shutdown(info);
@@ -1861,231 +2003,73 @@ void mxser_hangup(struct tty_struct *tty)
 	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_struct *info = tty->driver_data;
+	struct mxser_port *info = tty->driver_data;
 	unsigned long flags;
 
 	spin_lock_irqsave(&info->slock, flags);
 	if (break_state == -1)
-		outb(inb(info->base + UART_LCR) | UART_LCR_SBC,
-			info->base + UART_LCR);
+		outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC,
+			info->ioaddr + UART_LCR);
 	else
-		outb(inb(info->base + UART_LCR) & ~UART_LCR_SBC,
-			info->base + UART_LCR);
+		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)
-{
-	int status, iir, i;
-	struct mxser_struct *info;
-	struct mxser_struct *port;
-	int max, irqbits, bits, msr;
-	int pass_counter = 0;
-	int handled = IRQ_NONE;
-
-	port = NULL;
-	/* spin_lock(&gm_lock); */
-
-	for (i = 0; i < MXSER_BOARDS; i++) {
-		if (dev_id == &(mxvar_table[i * MXSER_PORTS_PER_BOARD])) {
-			port = dev_id;
-			break;
-		}
-	}
-
-	if (i == MXSER_BOARDS)
-		goto irq_stop;
-	if (port == 0)
-		goto irq_stop;
-	max = mxser_numports[mxsercfg[i].board_type - 1];
-	while (1) {
-		irqbits = inb(port->vector) & port->vectormask;
-		if (irqbits == port->vectormask)
-			break;
-
-		handled = IRQ_HANDLED;
-		for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) {
-			if (irqbits == port->vectormask)
-				break;
-			if (bits & irqbits)
-				continue;
-			info = port + i;
-
-			/* following add by Victor Yu. 09-13-2002 */
-			iir = inb(info->base + UART_IIR);
-			if (iir & UART_IIR_NO_INT)
-				continue;
-			iir &= MOXA_MUST_IIR_MASK;
-			if (!info->tty) {
-				status = inb(info->base + UART_LSR);
-				outb(0x27, info->base + UART_FCR);
-				inb(info->base + UART_MSR);
-				continue;
-			}
-
-			/* mask by Victor Yu. 09-13-2002
-			   if ( !info->tty ||
-			   (inb(info->base + UART_IIR) & UART_IIR_NO_INT) )
-			   continue;
-			 */
-			/* mask by Victor Yu. 09-02-2002
-			   status = inb(info->base + UART_LSR) & info->read_status_mask;
-			 */
-
-			/* following add by Victor Yu. 09-02-2002 */
-			status = inb(info->base + UART_LSR);
-
-			if (status & UART_LSR_PE)
-				info->err_shadow |= NPPI_NOTIFY_PARITY;
-			if (status & UART_LSR_FE)
-				info->err_shadow |= NPPI_NOTIFY_FRAMING;
-			if (status & UART_LSR_OE)
-				info->err_shadow |= NPPI_NOTIFY_HW_OVERRUN;
-			if (status & UART_LSR_BI)
-				info->err_shadow |= NPPI_NOTIFY_BREAK;
-
-			if (info->IsMoxaMustChipFlag) {
-				/*
-				   if ( (status & 0x02) && !(status & 0x01) ) {
-				   outb(info->base+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(info, &status);
-
-			} else {
-				/* above add by Victor Yu. 09-02-2002 */
-
-				status &= info->read_status_mask;
-				if (status & UART_LSR_DR)
-					mxser_receive_chars(info, &status);
-			}
-			msr = inb(info->base + UART_MSR);
-			if (msr & UART_MSR_ANY_DELTA) {
-				mxser_check_modem_status(info, msr);
-			}
-			/* following add by Victor Yu. 09-13-2002 */
-			if (info->IsMoxaMustChipFlag) {
-				if ((iir == 0x02) && (status & UART_LSR_THRE)) {
-					mxser_transmit_chars(info);
-				}
-			} else {
-				/* above add by Victor Yu. 09-13-2002 */
-
-				if (status & UART_LSR_THRE) {
-/* 8-2-99 by William
-			    if ( info->x_char || (info->xmit_cnt > 0) )
-*/
-					mxser_transmit_chars(info);
-				}
-			}
-		}
-		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_struct *info, int *status)
+static void mxser_receive_chars(struct mxser_port *port, int *status)
 {
-	struct tty_struct *tty = info->tty;
+	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(&info->slock, flags);
 
 	recv_room = tty->receive_room;
-	if ((recv_room == 0) && (!info->ldisc_stop_rx)) {
-		/* mxser_throttle(tty); */
+	if ((recv_room == 0) && (!port->ldisc_stop_rx))
 		mxser_stoprx(tty);
-		/* return; */
-	}
 
-	/* following add by Victor Yu. 09-02-2002 */
-	if (info->IsMoxaMustChipFlag != MOXA_OTHER_UART) {
+	if (port->board->chip_flag != MOXA_OTHER_UART) {
 
-		if (*status & UART_LSR_SPECIAL) {
+		if (*status & UART_LSR_SPECIAL)
 			goto intr_old;
-		}
-		/* following add by Victor Yu. 02-11-2004 */
-		if (info->IsMoxaMustChipFlag == MOXA_MUST_MU860_HWID &&
+		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(info->base + MOXA_MUST_GDL_REGISTER);
+		gdl = inb(port->ioaddr + MOXA_MUST_GDL_REGISTER);
 
-		/* add by Victor Yu. 02-11-2004 */
-		if (info->IsMoxaMustChipFlag == MOXA_MUST_MU150_HWID)
+		if (port->board->chip_flag == MOXA_MUST_MU150_HWID)
 			gdl &= MOXA_MUST_GDL_MASK;
 		if (gdl >= recv_room) {
-			if (!info->ldisc_stop_rx) {
-				/* mxser_throttle(tty); */
+			if (!port->ldisc_stop_rx)
 				mxser_stoprx(tty);
-			}
-			/* return; */
 		}
 		while (gdl--) {
-			ch = inb(info->base + UART_RX);
+			ch = inb(port->ioaddr + UART_RX);
 			tty_insert_flip_char(tty, ch, 0);
 			cnt++;
-			/*
-			   if ((cnt >= HI_WATER) && (info->stop_rx == 0)) {
-			   mxser_stoprx(tty);
-			   info->stop_rx = 1;
-			   break;
-			   } */
 		}
 		goto end_intr;
 	}
- intr_old:
-	/* above add by Victor Yu. 09-02-2002 */
+intr_old:
 
 	do {
 		if (max-- < 0)
 			break;
-		/*
-		   if ((cnt >= HI_WATER) && (info->stop_rx == 0)) {
-		   mxser_stoprx(tty);
-		   info->stop_rx=1;
-		   break;
-		   }
-		 */
 
-		ch = inb(info->base + UART_RX);
-		/* following add by Victor Yu. 09-02-2002 */
-		if (info->IsMoxaMustChipFlag && (*status & UART_LSR_OE) /*&& !(*status&UART_LSR_DR) */ )
-			outb(0x23, info->base + UART_FCR);
-		*status &= info->read_status_mask;
-		/* above add by Victor Yu. 09-02-2002 */
-		if (*status & info->ignore_status_mask) {
+		ch = inb(port->ioaddr + UART_RX);
+		if (port->board->chip_flag && (*status & UART_LSR_OE))
+			outb(0x23, port->ioaddr + UART_FCR);
+		*status &= port->read_status_mask;
+		if (*status & port->ignore_status_mask) {
 			if (++ignored > 100)
 				break;
 		} else {
@@ -2093,1048 +2077,652 @@ static void mxser_receive_chars(struct mxser_struct *info, int *status)
 			if (*status & UART_LSR_SPECIAL) {
 				if (*status & UART_LSR_BI) {
 					flag = TTY_BREAK;
-/* added by casper 1/11/2000 */
-					info->icount.brk++;
-/* */
-					if (info->flags & ASYNC_SAK)
+					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 */
-					info->icount.parity++;
-/* */
+					port->icount.parity++;
 				} else if (*status & UART_LSR_FE) {
 					flag = TTY_FRAME;
-/* added by casper 1/11/2000 */
-					info->icount.frame++;
-/* */
+					port->icount.frame++;
 				} else if (*status & UART_LSR_OE) {
 					flag = TTY_OVERRUN;
-/* added by casper 1/11/2000 */
-					info->icount.overrun++;
-/* */
-				}
+					port->icount.overrun++;
+				} else
+					flag = TTY_BREAK;
 			}
 			tty_insert_flip_char(tty, ch, flag);
 			cnt++;
 			if (cnt >= recv_room) {
-				if (!info->ldisc_stop_rx) {
-					/* mxser_throttle(tty); */
+				if (!port->ldisc_stop_rx)
 					mxser_stoprx(tty);
-				}
 				break;
 			}
 
 		}
 
-		/* following add by Victor Yu. 09-02-2002 */
-		if (info->IsMoxaMustChipFlag)
+		if (port->board->chip_flag)
 			break;
-		/* above add by Victor Yu. 09-02-2002 */
 
-		/* mask by Victor Yu. 09-02-2002
-		 *status = inb(info->base + UART_LSR) & info->read_status_mask;
-		 */
-		/* following add by Victor Yu. 09-02-2002 */
-		*status = inb(info->base + UART_LSR);
-		/* above add by Victor Yu. 09-02-2002 */
+		*status = inb(port->ioaddr + UART_LSR);
 	} while (*status & UART_LSR_DR);
 
-end_intr:		/* add by Victor Yu. 09-02-2002 */
-	mxvar_log.rxcnt[info->port] += cnt;
-	info->mon_data.rxcnt += cnt;
-	info->mon_data.up_rxcnt += cnt;
-	spin_unlock_irqrestore(&info->slock, flags);
+end_intr:
+	mxvar_log.rxcnt[port->tty->index] += cnt;
+	port->mon_data.rxcnt += cnt;
+	port->mon_data.up_rxcnt += cnt;
 
+	/*
+	 * We are called from an interrupt context with &port->slock
+	 * being held. Drop it temporarily in order to prevent
+	 * recursive locking.
+	 */
+	spin_unlock(&port->slock);
 	tty_flip_buffer_push(tty);
+	spin_lock(&port->slock);
 }
 
-static void mxser_transmit_chars(struct mxser_struct *info)
+static void mxser_transmit_chars(struct mxser_port *port)
 {
 	int count, cnt;
-	unsigned long flags;
-
-	spin_lock_irqsave(&info->slock, flags);
 
-	if (info->x_char) {
-		outb(info->x_char, info->base + UART_TX);
-		info->x_char = 0;
-		mxvar_log.txcnt[info->port]++;
-		info->mon_data.txcnt++;
-		info->mon_data.up_txcnt++;
-
-/* added by casper 1/11/2000 */
-		info->icount.tx++;
-/* */
-		spin_unlock_irqrestore(&info->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++;
+		port->icount.tx++;
 		return;
 	}
 
-	if (info->xmit_buf == 0) {
-		spin_unlock_irqrestore(&info->slock, flags);
+	if (port->xmit_buf == NULL)
 		return;
-	}
 
-	if ((info->xmit_cnt <= 0) || info->tty->stopped ||
-			(info->tty->hw_stopped &&
-			(info->type != PORT_16550A) &&
-			(!info->IsMoxaMustChipFlag))) {
-		info->IER &= ~UART_IER_THRI;
-		outb(info->IER, info->base + UART_IER);
-		spin_unlock_irqrestore(&info->slock, flags);
+	if ((port->xmit_cnt <= 0) || 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);
 		return;
 	}
 
-	cnt = info->xmit_cnt;
-	count = info->xmit_fifo_size;
+	cnt = port->xmit_cnt;
+	count = port->xmit_fifo_size;
 	do {
-		outb(info->xmit_buf[info->xmit_tail++],
-			info->base + UART_TX);
-		info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE - 1);
-		if (--info->xmit_cnt <= 0)
+		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[info->port] += (cnt - info->xmit_cnt);
+	mxvar_log.txcnt[port->tty->index] += (cnt - port->xmit_cnt);
 
-/* added by James 03-12-2004. */
-	info->mon_data.txcnt += (cnt - info->xmit_cnt);
-	info->mon_data.up_txcnt += (cnt - info->xmit_cnt);
-/* (above) added by James. */
+	port->mon_data.txcnt += (cnt - port->xmit_cnt);
+	port->mon_data.up_txcnt += (cnt - port->xmit_cnt);
+	port->icount.tx += (cnt - port->xmit_cnt);
 
-/* added by casper 1/11/2000 */
-	info->icount.tx += (cnt - info->xmit_cnt);
-/* */
+	if (port->xmit_cnt < WAKEUP_CHARS)
+		tty_wakeup(port->tty);
 
-	if (info->xmit_cnt < WAKEUP_CHARS) {
-		set_bit(MXSER_EVENT_TXLOW, &info->event);
-		schedule_work(&info->tqueue);
-	}
-	if (info->xmit_cnt <= 0) {
-		info->IER &= ~UART_IER_THRI;
-		outb(info->IER, info->base + UART_IER);
+	if (port->xmit_cnt <= 0) {
+		port->IER &= ~UART_IER_THRI;
+		outb(port->IER, port->ioaddr + UART_IER);
 	}
-	spin_unlock_irqrestore(&info->slock, flags);
 }
 
-static void mxser_check_modem_status(struct mxser_struct *info, int status)
+/*
+ * This is the serial driver's generic interrupt routine
+ */
+static irqreturn_t mxser_interrupt(int irq, void *dev_id)
 {
-	/* update input line counters */
-	if (status & UART_MSR_TERI)
-		info->icount.rng++;
-	if (status & UART_MSR_DDSR)
-		info->icount.dsr++;
-	if (status & UART_MSR_DDCD)
-		info->icount.dcd++;
-	if (status & UART_MSR_DCTS)
-		info->icount.cts++;
-	info->mon_data.modem_status = status;
-	wake_up_interruptible(&info->delta_msr_wait);
-
-	if ((info->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
-		if (status & UART_MSR_DCD)
-			wake_up_interruptible(&info->open_wait);
-		schedule_work(&info->tqueue);
-	}
-
-	if (info->flags & ASYNC_CTS_FLOW) {
-		if (info->tty->hw_stopped) {
-			if (status & UART_MSR_CTS) {
-				info->tty->hw_stopped = 0;
+	int status, iir, i;
+	struct mxser_board *brd = NULL;
+	struct mxser_port *port;
+	int max, irqbits, bits, msr;
+	unsigned int int_cnt, pass_counter = 0;
+	int handled = IRQ_NONE;
 
-				if ((info->type != PORT_16550A) &&
-						(!info->IsMoxaMustChipFlag)) {
-					info->IER |= UART_IER_THRI;
-					outb(info->IER, info->base + 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->IsMoxaMustChipFlag)) {
-					info->IER &= ~UART_IER_THRI;
-					outb(info->IER, info->base + UART_IER);
-				}
-			}
+	for (i = 0; i < MXSER_BOARDS; i++)
+		if (dev_id == &mxser_boards[i]) {
+			brd = dev_id;
+			break;
 		}
-	}
-}
-
-static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp, struct mxser_struct *info)
-{
-	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))) {
-		info->flags |= ASYNC_NORMAL_ACTIVE;
-		return 0;
-	}
+	if (i == MXSER_BOARDS)
+		goto irq_stop;
+	if (brd == NULL)
+		goto irq_stop;
+	max = brd->info->nports;
+	while (pass_counter++ < MXSER_ISR_PASS_LIMIT) {
+		irqbits = inb(brd->vector) & brd->vector_mask;
+		if (irqbits == brd->vector_mask)
+			break;
 
-	if (tty->termios->c_cflag & CLOCAL)
-		do_clocal = 1;
+		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;
+			spin_lock(&port->slock);
+			do {
+				iir = inb(port->ioaddr + UART_IIR);
+				if (iir & UART_IIR_NO_INT)
+					break;
+				iir &= MOXA_MUST_IIR_MASK;
+				if (!port->tty ||
+						(port->flags & ASYNC_CLOSING) ||
+						!(port->flags &
+							ASYNC_INITIALIZED)) {
+					status = inb(port->ioaddr + UART_LSR);
+					outb(0x27, port->ioaddr + UART_FCR);
+					inb(port->ioaddr + UART_MSR);
+					break;
+				}
 
-	/*
-	 * 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, info->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(&info->open_wait, &wait);
+				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 (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);
 
-	spin_lock_irqsave(&info->slock, flags);
-	if (!tty_hung_up_p(filp))
-		info->count--;
-	spin_unlock_irqrestore(&info->slock, flags);
-	info->blocked_open++;
-	while (1) {
-		spin_lock_irqsave(&info->slock, flags);
-		outb(inb(info->base + UART_MCR) |
-			UART_MCR_DTR | UART_MCR_RTS, info->base + UART_MCR);
-		spin_unlock_irqrestore(&info->slock, flags);
-		set_current_state(TASK_INTERRUPTIBLE);
-		if (tty_hung_up_p(filp) || !(info->flags & ASYNC_INITIALIZED)) {
-			if (info->flags & ASYNC_HUP_NOTIFY)
-				retval = -EAGAIN;
-			else
-				retval = -ERESTARTSYS;
-			break;
-		}
-		if (!(info->flags & ASYNC_CLOSING) &&
-				(do_clocal ||
-				(inb(info->base + UART_MSR) & UART_MSR_DCD)))
-			break;
-		if (signal_pending(current)) {
-			retval = -ERESTARTSYS;
-			break;
+				} else {
+					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);
+
+				if (port->board->chip_flag) {
+					if (iir == 0x02 && (status &
+								UART_LSR_THRE))
+						mxser_transmit_chars(port);
+				} else {
+					if (status & UART_LSR_THRE)
+						mxser_transmit_chars(port);
+				}
+			} while (int_cnt++ < MXSER_ISR_PASS_LIMIT);
+			spin_unlock(&port->slock);
 		}
-		schedule();
 	}
-	set_current_state(TASK_RUNNING);
-	remove_wait_queue(&info->open_wait, &wait);
-	if (!tty_hung_up_p(filp))
-		info->count++;
-	info->blocked_open--;
-	if (retval)
-		return retval;
-	info->flags |= ASYNC_NORMAL_ACTIVE;
-	return 0;
-}
 
-static int mxser_startup(struct mxser_struct *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;
-	}
+irq_stop:
+	return handled;
+}
 
-	if (!info->base || !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;
+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,
+};
 
-	/*
-	 * Clear the FIFO buffers and disable them
-	 * (they will be reenabled in mxser_change_speed())
-	 */
-	if (info->IsMoxaMustChipFlag)
-		outb((UART_FCR_CLEAR_RCVR |
-			UART_FCR_CLEAR_XMIT |
-			MOXA_MUST_FCR_GDA_MODE_ENABLE), info->base + UART_FCR);
-	else
-		outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT),
-			info->base + UART_FCR);
+/*
+ * The MOXA Smartio/Industio serial driver boot-time initialization code!
+ */
 
-	/*
-	 * 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->base + 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;
+static void mxser_release_res(struct mxser_board *brd, struct pci_dev *pdev,
+		unsigned int irq)
+{
+	if (irq)
+		free_irq(brd->irq, brd);
+	if (pdev != NULL) {	/* PCI */
+#ifdef CONFIG_PCI
+		pci_release_region(pdev, 2);
+		pci_release_region(pdev, 3);
+#endif
+	} else {
+		release_region(brd->ports[0].ioaddr, 8 * brd->info->nports);
+		release_region(brd->vector, 1);
 	}
-
-	/*
-	 * Clear the interrupt registers.
-	 */
-	(void) inb(info->base + UART_LSR);
-	(void) inb(info->base + UART_RX);
-	(void) inb(info->base + UART_IIR);
-	(void) inb(info->base + UART_MSR);
-
-	/*
-	 * Now, initialize the UART
-	 */
-	outb(UART_LCR_WLEN8, info->base + UART_LCR);	/* reset DLAB */
-	info->MCR = UART_MCR_DTR | UART_MCR_RTS;
-	outb(info->MCR, info->base + 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->IsMoxaMustChipFlag)
-		info->IER |= MOXA_MUST_IER_EGDAI;
-	/* above add by Victor Yu. 08-30-2002 */
-	outb(info->IER, info->base + UART_IER);	/* enable interrupts */
-
-	/*
-	 * And clear the interrupt registers again for luck.
-	 */
-	(void) inb(info->base + UART_LSR);
-	(void) inb(info->base + UART_RX);
-	(void) inb(info->base + UART_IIR);
-	(void) inb(info->base + 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_struct *info)
+static int __devinit mxser_initbrd(struct mxser_board *brd,
+		struct pci_dev *pdev)
 {
-	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;
-	}
+	struct mxser_port *info;
+	unsigned int i;
+	int retval;
 
-	info->IER = 0;
-	outb(0x00, info->base + UART_IER);
+	printk(KERN_INFO "max. baud rate = %d bps.\n", brd->ports[0].max_baud);
 
-	if (!info->tty || (info->tty->termios->c_cflag & HUPCL))
-		info->MCR &= ~(UART_MCR_DTR | UART_MCR_RTS);
-	outb(info->MCR, info->base + UART_MCR);
+	for (i = 0; i < brd->info->nports; i++) {
+		info = &brd->ports[i];
+		info->board = brd;
+		info->stop_rx = 0;
+		info->ldisc_stop_rx = 0;
 
-	/* clear Rx/Tx FIFO's */
-	/* following add by Victor Yu. 08-30-2002 */
-	if (info->IsMoxaMustChipFlag)
-		outb((UART_FCR_CLEAR_RCVR |
-			UART_FCR_CLEAR_XMIT |
-			MOXA_MUST_FCR_GDA_MODE_ENABLE), info->base + UART_FCR);
-	else
-		/* above add by Victor Yu. 08-30-2002 */
-		outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT),
-			info->base + UART_FCR);
+		/* Enhance mode enabled here */
+		if (brd->chip_flag != MOXA_OTHER_UART)
+			ENABLE_MOXA_MUST_ENCHANCE_MODE(info->ioaddr);
 
-	/* read data port to reset things */
-	(void) inb(info->base + UART_RX);
+		info->flags = ASYNC_SHARE_IRQ;
+		info->type = brd->uart_type;
 
-	if (info->tty)
-		set_bit(TTY_IO_ERROR, &info->tty->flags);
+		process_txrx_fifo(info);
 
-	info->flags &= ~ASYNC_INITIALIZED;
+		info->custom_divisor = info->baud_base * 16;
+		info->close_delay = 5 * HZ / 10;
+		info->closing_wait = 30 * HZ;
+		info->normal_termios = mxvar_sdriver->init_termios;
+		init_waitqueue_head(&info->open_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);
 
-	/* following add by Victor Yu. 09-23-2002 */
-	if (info->IsMoxaMustChipFlag)
-		SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->base);
-	/* above add by Victor Yu. 09-23-2002 */
+		/* before set INT ISR, disable all int */
+		outb(inb(info->ioaddr + UART_IER) & 0xf0,
+			info->ioaddr + UART_IER);
+	}
 
-	spin_unlock_irqrestore(&info->slock, flags);
+	retval = request_irq(brd->irq, mxser_interrupt, IRQF_SHARED, "mxser",
+			brd);
+	if (retval) {
+		printk(KERN_ERR "Board %s: Request irq failed, IRQ (%d) may "
+			"conflict with another device.\n",
+			brd->info->name, brd->irq);
+		/* We hold resources, we need to release them. */
+		mxser_release_res(brd, pdev, 0);
+	}
+	return retval;
 }
 
-/*
- * 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_struct *info, struct ktermios *old_termios)
+static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd)
 {
-	unsigned cflag, cval, fcr;
-	int ret = 0;
-	unsigned char status;
-	long baud;
-	unsigned long flags;
+	int id, i, bits;
+	unsigned short regs[16], irq;
+	unsigned char scratch, scratch2;
 
-	if (!info->tty || !info->tty->termios)
-		return ret;
-	cflag = info->tty->termios->c_cflag;
-	if (!(info->base))
-		return ret;
+	brd->chip_flag = MOXA_OTHER_UART;
 
-#ifndef B921600
-#define B921600 (B460800 +1)
-#endif
-	if (mxser_set_baud_method[info->port] == 0) {
-		baud = tty_get_baud_rate(info->tty);
-		if (mxser_set_baud(info, baud) == -1) {
-			/* Use previous rate on a failure */
-			if (old_termios) {
-				baud = tty_termios_baud_rate(old_termios);
-				tty_encode_baud_rate(info->tty, baud, baud);
-			}
-		}
-	}
-
-	/* byte size and parity */
-	switch (cflag & CSIZE) {
-	case CS5:
-		cval = 0x00;
+	id = mxser_read_register(cap, regs);
+	switch (id) {
+	case C168_ASIC_ID:
+		brd->info = &mxser_cards[0];
 		break;
-	case CS6:
-		cval = 0x01;
+	case C104_ASIC_ID:
+		brd->info = &mxser_cards[1];
 		break;
-	case CS7:
-		cval = 0x02;
+	case CI104J_ASIC_ID:
+		brd->info = &mxser_cards[2];
 		break;
-	case CS8:
-		cval = 0x03;
+	case C102_ASIC_ID:
+		brd->info = &mxser_cards[5];
+		break;
+	case CI132_ASIC_ID:
+		brd->info = &mxser_cards[6];
+		break;
+	case CI134_ASIC_ID:
+		brd->info = &mxser_cards[7];
 		break;
 	default:
-		cval = 0x00;
-		break;		/* too keep GCC shut... */
+		return 0;
 	}
-	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->IsMoxaMustChipFlag) {
-			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->IsMoxaMustChipFlag) {
-			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;
-			}
-		}
+	irq = 0;
+	/* some ISA cards have 2 ports, but we want to see them as 4-port (why?)
+	   Flag-hack checks if configuration should be read as 2-port here. */
+	if (brd->info->nports == 2 || (brd->info->flags & MXSER_HAS2)) {
+		irq = regs[9] & 0xF000;
+		irq = irq | (irq >> 4);
+		if (irq != (regs[9] & 0xFF00))
+			return MXSER_ERR_IRQ_CONFLIT;
+	} else if (brd->info->nports == 4) {
+		irq = regs[9] & 0xF000;
+		irq = irq | (irq >> 4);
+		irq = irq | (irq >> 8);
+		if (irq != regs[9])
+			return MXSER_ERR_IRQ_CONFLIT;
+	} else if (brd->info->nports == 8) {
+		irq = regs[9] & 0xF000;
+		irq = irq | (irq >> 4);
+		irq = irq | (irq >> 8);
+		if ((irq != regs[9]) || (irq != regs[10]))
+			return MXSER_ERR_IRQ_CONFLIT;
 	}
 
-	/* 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->IsMoxaMustChipFlag)) {
-			info->MCR |= UART_MCR_AFE;
+	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;
 		} else {
-			status = inb(info->base + UART_MSR);
-			if (info->tty->hw_stopped) {
-				if (status & UART_MSR_CTS) {
-					info->tty->hw_stopped = 0;
-					if ((info->type != PORT_16550A) &&
-							(!info->IsMoxaMustChipFlag)) {
-						info->IER |= UART_IER_THRI;
-						outb(info->IER, info->base + 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->IsMoxaMustChipFlag)) {
-						info->IER &= ~UART_IER_THRI;
-						outb(info->IER, info->base + UART_IER);
-					}
-				}
-			}
+			brd->ports[i].baud_base = 115200;
+			brd->ports[i].max_baud = 115200;
 		}
-	} else {
-		info->flags &= ~ASYNC_CTS_FLOW;
-	}
-	outb(info->MCR, info->base + 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->base + 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;
+	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 (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->IsMoxaMustChipFlag) {
-		spin_lock_irqsave(&info->slock, flags);
-		SET_MOXA_MUST_XON1_VALUE(info->base, START_CHAR(info->tty));
-		SET_MOXA_MUST_XOFF1_VALUE(info->base, STOP_CHAR(info->tty));
-		if (I_IXON(info->tty)) {
-			ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->base);
-		} else {
-			DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->base);
-		}
-		if (I_IXOFF(info->tty)) {
-			ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->base);
-		} else {
-			DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->base);
-		}
-		/*
-		   if ( I_IXANY(info->tty) ) {
-		   info->MCR |= MOXA_MUST_MCR_XON_ANY;
-		   ENABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->base);
-		   } else {
-		   info->MCR &= ~MOXA_MUST_MCR_XON_ANY;
-		   DISABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->base);
-		   }
-		 */
-		spin_unlock_irqrestore(&info->slock, flags);
+	if (scratch & 0xC0)
+		brd->uart_type = PORT_16550A;
+	else
+		brd->uart_type = PORT_16450;
+	if (!request_region(brd->ports[0].ioaddr, 8 * brd->info->nports,
+			"mxser(IO)"))
+		return MXSER_ERR_IOADDR;
+	if (!request_region(brd->vector, 1, "mxser(vector)")) {
+		release_region(brd->ports[0].ioaddr, 8 * brd->info->nports);
+		return MXSER_ERR_VECTOR;
 	}
-	/* above add by Victor Yu. 09-02-2002 */
-
-
-	outb(fcr, info->base + UART_FCR);	/* set fcr */
-	outb(cval, info->base + UART_LCR);
-
-	return ret;
+	return brd->info->nports;
 }
 
-
-static int mxser_set_baud(struct mxser_struct *info, long newspd)
+static int __devinit mxser_probe(struct pci_dev *pdev,
+		const struct pci_device_id *ent)
 {
-	int quot = 0;
-	unsigned char cval;
-	unsigned long flags;
-	unsigned int baud;
-
-	if (!info->tty || !info->tty->termios)
-		return -1;
-
-	if (!(info->base))
-		return -1;
+#ifdef CONFIG_PCI
+	struct mxser_board *brd;
+	unsigned int i, j;
+	unsigned long ioaddress;
+	int retval = -EINVAL;
 
-	if (newspd > info->MaxCanSetBaudRate)
-		return -1;
+	for (i = 0; i < MXSER_BOARDS; i++)
+		if (mxser_boards[i].info == NULL)
+			break;
 
-	info->realbaud = newspd;
-	if (newspd == 134) {
-		quot = (2 * info->baud_base / 269);
-		tty_encode_baud_rate(info->tty, 134, 134);
-	} else if (newspd) {
-		quot = info->baud_base / newspd;
-		if (quot == 0)
-			quot = 1;
-		baud = info->baud_base / quot;
-		tty_encode_baud_rate(info->tty, baud, baud);
-	} else {
-		quot = 0;
-		tty_encode_baud_rate(info->tty, 0, 0);
+	if (i >= MXSER_BOARDS) {
+		printk(KERN_ERR "Too many Smartio/Industio family boards found "
+			"(maximum %d), board not configured\n", MXSER_BOARDS);
+		goto err;
 	}
 
-	info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base);
-	info->timeout += HZ / 50;	/* Add .02 seconds of slop */
+	brd = &mxser_boards[i];
+	brd->idx = i * MXSER_PORTS_PER_BOARD;
+	printk(KERN_INFO "Found MOXA %s board (BusNo=%d, DevNo=%d)\n",
+		mxser_cards[ent->driver_data].name,
+		pdev->bus->number, PCI_SLOT(pdev->devfn));
 
-	if (quot) {
-		spin_lock_irqsave(&info->slock, flags);
-		info->MCR |= UART_MCR_DTR;
-		outb(info->MCR, info->base + UART_MCR);
-		spin_unlock_irqrestore(&info->slock, flags);
-	} else {
-		spin_lock_irqsave(&info->slock, flags);
-		info->MCR &= ~UART_MCR_DTR;
-		outb(info->MCR, info->base + UART_MCR);
-		spin_unlock_irqrestore(&info->slock, flags);
-		return 0;
+	retval = pci_enable_device(pdev);
+	if (retval) {
+		printk(KERN_ERR "Moxa SmartI/O PCI enable fail !\n");
+		goto err;
 	}
 
-	cval = inb(info->base + UART_LCR);
-
-	outb(cval | UART_LCR_DLAB, info->base + UART_LCR);	/* set DLAB */
-
-	outb(quot & 0xff, info->base + UART_DLL);	/* LS of divisor */
-	outb(quot >> 8, info->base + UART_DLM);	/* MS of divisor */
-	outb(cval, info->base + UART_LCR);	/* reset DLAB */
-
+	/* io address */
+	ioaddress = pci_resource_start(pdev, 2);
+	retval = pci_request_region(pdev, 2, "mxser(IO)");
+	if (retval)
+		goto err;
 
-	return 0;
-}
+	brd->info = &mxser_cards[ent->driver_data];
+	for (i = 0; i < brd->info->nports; i++)
+		brd->ports[i].ioaddr = ioaddress + 8 * i;
 
-/*
- * ------------------------------------------------------------
- * friends of mxser_ioctl()
- * ------------------------------------------------------------
- */
-static int mxser_get_serial_info(struct mxser_struct *info, struct serial_struct __user *retinfo)
-{
-	struct serial_struct tmp;
+	/* vector */
+	ioaddress = pci_resource_start(pdev, 3);
+	retval = pci_request_region(pdev, 3, "mxser(vector)");
+	if (retval)
+		goto err_relio;
+	brd->vector = ioaddress;
 
-	if (!retinfo)
-		return -EFAULT;
-	memset(&tmp, 0, sizeof(tmp));
-	tmp.type = info->type;
-	tmp.line = info->port;
-	tmp.port = info->base;
-	tmp.irq = info->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;
-}
+	/* irq */
+	brd->irq = pdev->irq;
 
-static int mxser_set_serial_info(struct mxser_struct *info, struct serial_struct __user *new_info)
-{
-	struct serial_struct new_serial;
-	unsigned int flags;
-	int retval = 0;
+	brd->chip_flag = CheckIsMoxaMust(brd->ports[0].ioaddr);
+	brd->uart_type = PORT_16550A;
+	brd->vector_mask = 0;
 
-	if (!new_info || !info->base)
-		return -EFAULT;
-	if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
-		return -EFAULT;
+	for (i = 0; i < brd->info->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 ((new_serial.irq != info->irq) ||
-			(new_serial.port != info->base) ||
-			(new_serial.custom_divisor != info->custom_divisor) ||
-			(new_serial.baud_base != info->baud_base))
-		return -EPERM;
+				/* exception....CP-102 */
+				if (brd->info->flags & MXSER_HIGHBAUD)
+					brd->ports[i].max_baud = 921600;
+				break;
+			}
+		}
+	}
 
-	flags = info->flags & ASYNC_SPD_MASK;
+	if (brd->chip_flag == MOXA_MUST_MU860_HWID) {
+		for (i = 0; i < brd->info->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 */
+	}
 
-	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; */
+	for (i = 0; i < brd->info->nports; i++) {
+		brd->vector_mask |= (1 << i);
+		brd->ports[i].baud_base = 921600;
 	}
 
-	/* added by casper, 3/17/2000, for mouse */
-	info->type = new_serial.type;
+	/* mxser_initbrd will hook ISR. */
+	retval = mxser_initbrd(brd, pdev);
+	if (retval)
+		goto err_null;
 
-	process_txrx_fifo(info);
+	for (i = 0; i < brd->info->nports; i++)
+		tty_register_device(mxvar_sdriver, brd->idx + i, &pdev->dev);
 
-	if (info->flags & ASYNC_INITIALIZED) {
-		if (flags != (info->flags & ASYNC_SPD_MASK)) {
-			mxser_change_speed(info, NULL);
-		}
-	} else {
-		retval = mxser_startup(info);
-	}
+	pci_set_drvdata(pdev, brd);
+
+	return 0;
+err_relio:
+	pci_release_region(pdev, 2);
+err_null:
+	brd->info = NULL;
+err:
 	return retval;
+#else
+	return -ENODEV;
+#endif
 }
 
-/*
- * 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_struct *info, unsigned int __user *value)
+static void __devexit mxser_remove(struct pci_dev *pdev)
 {
-	unsigned char status;
-	unsigned int result;
-	unsigned long flags;
+	struct mxser_board *brd = pci_get_drvdata(pdev);
+	unsigned int i;
 
-	spin_lock_irqsave(&info->slock, flags);
-	status = inb(info->base + UART_LSR);
-	spin_unlock_irqrestore(&info->slock, flags);
-	result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
-	return put_user(result, value);
-}
-
-/*
- * This routine sends a break character out the serial port.
- */
-static void mxser_send_break(struct mxser_struct *info, int duration)
-{
-	unsigned long flags;
+	for (i = 0; i < brd->info->nports; i++)
+		tty_unregister_device(mxvar_sdriver, brd->idx + i);
 
-	if (!info->base)
-		return;
-	set_current_state(TASK_INTERRUPTIBLE);
-	spin_lock_irqsave(&info->slock, flags);
-	outb(inb(info->base + UART_LCR) | UART_LCR_SBC,
-		info->base + UART_LCR);
-	spin_unlock_irqrestore(&info->slock, flags);
-	schedule_timeout(duration);
-	spin_lock_irqsave(&info->slock, flags);
-	outb(inb(info->base + UART_LCR) & ~UART_LCR_SBC,
-		info->base + UART_LCR);
-	spin_unlock_irqrestore(&info->slock, flags);
+	mxser_release_res(brd, pdev, 1);
+	brd->info = NULL;
 }
 
-static int mxser_tiocmget(struct tty_struct *tty, struct file *file)
-{
-	struct mxser_struct *info = tty->driver_data;
-	unsigned char control, status;
-	unsigned long flags;
+static struct pci_driver mxser_driver = {
+	.name = "mxser",
+	.id_table = mxser_pcibrds,
+	.probe = mxser_probe,
+	.remove = __devexit_p(mxser_remove)
+};
 
+static int __init mxser_module_init(void)
+{
+	struct mxser_board *brd;
+	unsigned long cap;
+	unsigned int i, m, isaloop;
+	int retval, b;
 
-	if (tty->index == MXSER_PORTS)
-		return -ENOIOCTLCMD;
-	if (tty->flags & (1 << TTY_IO_ERROR))
-		return -EIO;
+	pr_debug("Loading module mxser ...\n");
 
-	control = info->MCR;
+	mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1);
+	if (!mxvar_sdriver)
+		return -ENOMEM;
 
-	spin_lock_irqsave(&info->slock, flags);
-	status = inb(info->base + 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);
-}
+	printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n",
+		MXSER_VERSION);
 
-static int mxser_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear)
-{
-	struct mxser_struct *info = tty->driver_data;
-	unsigned long flags;
+	/* Initialize the tty_driver structure */
+	mxvar_sdriver->owner = THIS_MODULE;
+	mxvar_sdriver->magic = TTY_DRIVER_MAGIC;
+	mxvar_sdriver->name = "ttyMI";
+	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_DRIVER_DYNAMIC_DEV;
+	tty_set_operations(mxvar_sdriver, &mxser_ops);
 
+	retval = tty_register_driver(mxvar_sdriver);
+	if (retval) {
+		printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family "
+				"tty driver !\n");
+		goto err_put;
+	}
 
-	if (tty->index == MXSER_PORTS)
-		return -ENOIOCTLCMD;
-	if (tty->flags & (1 << TTY_IO_ERROR))
-		return -EIO;
+	mxvar_diagflag = 0;
 
-	spin_lock_irqsave(&info->slock, flags);
+	m = 0;
+	/* Start finding ISA boards here */
+	for (isaloop = 0; isaloop < 2; isaloop++)
+		for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
+			if (!isaloop)
+				cap = mxserBoardCAP[b]; /* predefined */
+			else
+				cap = ioaddr[b]; /* module param */
 
-	if (set & TIOCM_RTS)
-		info->MCR |= UART_MCR_RTS;
-	if (set & TIOCM_DTR)
-		info->MCR |= UART_MCR_DTR;
+			if (!cap)
+				continue;
 
-	if (clear & TIOCM_RTS)
-		info->MCR &= ~UART_MCR_RTS;
-	if (clear & TIOCM_DTR)
-		info->MCR &= ~UART_MCR_DTR;
+			brd = &mxser_boards[m];
+			retval = mxser_get_ISA_conf(cap, brd);
 
-	outb(info->MCR, info->base + UART_MCR);
-	spin_unlock_irqrestore(&info->slock, flags);
-	return 0;
-}
+			if (retval != 0)
+				printk(KERN_INFO "Found MOXA %s board "
+					"(CAP=0x%x)\n",
+					brd->info->name, 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");
 
-static int mxser_read_register(int, unsigned short *);
-static int mxser_program_mode(int);
-static void mxser_normal_mode(int);
+				brd->info = NULL;
+				continue;
+			}
 
-static int mxser_get_ISA_conf(int cap, struct mxser_hwconf *hwconf)
-{
-	int id, i, bits;
-	unsigned short regs[16], irq;
-	unsigned char scratch, scratch2;
+			/* mxser_initbrd will hook ISR. */
+			if (mxser_initbrd(brd, NULL) < 0) {
+				brd->info = NULL;
+				continue;
+			}
 
-	hwconf->IsMoxaMustChipFlag = MOXA_OTHER_UART;
+			brd->idx = m * MXSER_PORTS_PER_BOARD;
+			for (i = 0; i < brd->info->nports; i++)
+				tty_register_device(mxvar_sdriver, brd->idx + i,
+						NULL);
 
-	id = mxser_read_register(cap, regs);
-	if (id == C168_ASIC_ID) {
-		hwconf->board_type = MXSER_BOARD_C168_ISA;
-		hwconf->ports = 8;
-	} else if (id == C104_ASIC_ID) {
-		hwconf->board_type = MXSER_BOARD_C104_ISA;
-		hwconf->ports = 4;
-	} else if (id == C102_ASIC_ID) {
-		hwconf->board_type = MXSER_BOARD_C102_ISA;
-		hwconf->ports = 2;
-	} else if (id == CI132_ASIC_ID) {
-		hwconf->board_type = MXSER_BOARD_CI132;
-		hwconf->ports = 2;
-	} else if (id == CI134_ASIC_ID) {
-		hwconf->board_type = MXSER_BOARD_CI134;
-		hwconf->ports = 4;
-	} else if (id == CI104J_ASIC_ID) {
-		hwconf->board_type = MXSER_BOARD_CI104J;
-		hwconf->ports = 4;
-	} else
-		return 0;
+			m++;
+		}
 
-	irq = 0;
-	if (hwconf->ports == 2) {
-		irq = regs[9] & 0xF000;
-		irq = irq | (irq >> 4);
-		if (irq != (regs[9] & 0xFF00))
-			return MXSER_ERR_IRQ_CONFLIT;
-	} else if (hwconf->ports == 4) {
-		irq = regs[9] & 0xF000;
-		irq = irq | (irq >> 4);
-		irq = irq | (irq >> 8);
-		if (irq != regs[9])
-			return MXSER_ERR_IRQ_CONFLIT;
-	} else if (hwconf->ports == 8) {
-		irq = regs[9] & 0xF000;
-		irq = irq | (irq >> 4);
-		irq = irq | (irq >> 8);
-		if ((irq != regs[9]) || (irq != regs[10]))
-			return MXSER_ERR_IRQ_CONFLIT;
+	retval = pci_register_driver(&mxser_driver);
+	if (retval) {
+		printk(KERN_ERR "Can't register pci driver\n");
+		if (!m) {
+			retval = -ENODEV;
+			goto err_unr;
+		} /* else: we have some ISA cards under control */
 	}
 
-	if (!irq)
-		return MXSER_ERR_IRQ;
-	hwconf->irq = ((int)(irq & 0xF000) >> 12);
-	for (i = 0; i < 8; i++)
-		hwconf->ioaddr[i] = (int) regs[i + 1] & 0xFFF8;
-	if ((regs[12] & 0x80) == 0)
-		return MXSER_ERR_VECTOR;
-	hwconf->vector = (int)regs[11];	/* interrupt vector */
-	if (id == 1)
-		hwconf->vector_mask = 0x00FF;
-	else
-		hwconf->vector_mask = 0x000F;
-	for (i = 7, bits = 0x0100; i >= 0; i--, bits <<= 1) {
-		if (regs[12] & bits) {
-			hwconf->baud_base[i] = 921600;
-			hwconf->MaxCanSetBaudRate[i] = 921600;	/* add by Victor Yu. 09-04-2002 */
-		} else {
-			hwconf->baud_base[i] = 115200;
-			hwconf->MaxCanSetBaudRate[i] = 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);
+	pr_debug("Done.\n");
 
-	if (scratch & 0xC0)
-		hwconf->uart_type = PORT_16550A;
-	else
-		hwconf->uart_type = PORT_16450;
-	if (id == 1)
-		hwconf->ports = 8;
-	else
-		hwconf->ports = 4;
-	request_region(hwconf->ioaddr[0], 8 * hwconf->ports, "mxser(IO)");
-	request_region(hwconf->vector, 1, "mxser(vector)");
-	return hwconf->ports;
+	return 0;
+err_unr:
+	tty_unregister_driver(mxvar_sdriver);
+err_put:
+	put_tty_driver(mxvar_sdriver);
+	return retval;
 }
 
-#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)
+static void __exit mxser_module_exit(void)
 {
-	int i, k, value, id;
-	unsigned int j;
+	unsigned int i, 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;
-}
+	pr_debug("Unloading module mxser ...\n");
 
-static int mxser_program_mode(int port)
-{
-	int id, i, j, n;
-	/* unsigned long flags; */
+	pci_unregister_driver(&mxser_driver);
 
-	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);
+	for (i = 0; i < MXSER_BOARDS; i++) /* ISA remains */
+		if (mxser_boards[i].info != NULL)
+			for (j = 0; j < mxser_boards[i].info->nports; j++)
+				tty_unregister_device(mxvar_sdriver,
+						mxser_boards[i].idx + j);
+	tty_unregister_driver(mxvar_sdriver);
+	put_tty_driver(mxvar_sdriver);
 
-	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;
+	for (i = 0; i < MXSER_BOARDS; i++)
+		if (mxser_boards[i].info != NULL)
+			mxser_release_res(&mxser_boards[i], NULL, 1);
 
-	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);
+	pr_debug("Done.\n");
 }
 
 module_init(mxser_module_init);