1 /*****************************************************************************/
3 * moxa.c -- MOXA Intellio family multiport serial driver.
5 * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com.tw).
7 * This code is loosely based on the Linux serial driver, written by
8 * Linus Torvalds, Theodore T'so and others.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
17 * MOXA Intellio Series Driver
23 #include <linux/module.h>
24 #include <linux/types.h>
26 #include <linux/ioport.h>
27 #include <linux/errno.h>
28 #include <linux/signal.h>
29 #include <linux/sched.h>
30 #include <linux/timer.h>
31 #include <linux/interrupt.h>
32 #include <linux/tty.h>
33 #include <linux/tty_flip.h>
34 #include <linux/major.h>
35 #include <linux/string.h>
36 #include <linux/fcntl.h>
37 #include <linux/ptrace.h>
38 #include <linux/serial.h>
39 #include <linux/tty_driver.h>
40 #include <linux/delay.h>
41 #include <linux/pci.h>
42 #include <linux/init.h>
43 #include <linux/bitops.h>
45 #include <asm/system.h>
47 #include <asm/uaccess.h>
49 #define MOXA_VERSION "5.1k"
52 #define MOXACUMAJOR 173
54 #define MAX_BOARDS 4 /* Don't change this value */
55 #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
56 #define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD)
59 * Define the Moxa PCI vendor and device IDs.
61 #define MOXA_BUS_TYPE_ISA 0
62 #define MOXA_BUS_TYPE_PCI 1
65 MOXA_BOARD_C218_PCI = 1,
72 static char *moxa_brdname[] =
74 "C218 Turbo PCI series",
75 "C218 Turbo ISA series",
76 "C320 Turbo PCI series",
77 "C320 Turbo ISA series",
82 static struct pci_device_id moxa_pcibrds[] = {
83 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218),
84 .driver_data = MOXA_BOARD_C218_PCI },
85 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320),
86 .driver_data = MOXA_BOARD_C320_PCI },
87 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J),
88 .driver_data = MOXA_BOARD_CP204J },
91 MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
92 #endif /* CONFIG_PCI */
94 struct moxa_isa_board_conf {
97 unsigned long baseAddr;
100 static struct moxa_isa_board_conf moxa_isa_boards[] =
102 /* {MOXA_BOARD_C218_ISA,8,0xDC000}, */
105 struct moxa_board_conf {
108 unsigned long baseAddr;
110 struct pci_dev *pdev;
113 static struct moxa_board_conf moxa_boards[MAX_BOARDS];
114 static void __iomem *moxaBaseAddr[MAX_BOARDS];
115 static int loadstat[MAX_BOARDS];
121 unsigned short closing_wait;
124 long event; /* long req'd for set_bit --RR */
126 unsigned long statusflags;
127 struct tty_struct *tty;
129 wait_queue_head_t open_wait;
130 wait_queue_head_t close_wait;
133 struct mxser_mstatus {
141 static struct mxser_mstatus GMStatus[MAX_PORTS];
144 #define TXSTOPPED 0x1
146 #define EMPTYWAIT 0x4
149 #define SERIAL_DO_RESTART
151 #define WAKEUP_CHARS 256
153 static int verbose = 0;
154 static int ttymajor = MOXAMAJOR;
155 /* Variables for insmod */
157 static int baseaddr[4];
159 static int numports[4];
162 MODULE_AUTHOR("William Chen");
163 MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
164 MODULE_LICENSE("GPL");
166 module_param_array(type, int, NULL, 0);
167 module_param_array(baseaddr, int, NULL, 0);
168 module_param_array(numports, int, NULL, 0);
170 module_param(ttymajor, int, 0);
171 module_param(verbose, bool, 0644);
176 static int moxa_open(struct tty_struct *, struct file *);
177 static void moxa_close(struct tty_struct *, struct file *);
178 static int moxa_write(struct tty_struct *, const unsigned char *, int);
179 static int moxa_write_room(struct tty_struct *);
180 static void moxa_flush_buffer(struct tty_struct *);
181 static int moxa_chars_in_buffer(struct tty_struct *);
182 static void moxa_flush_chars(struct tty_struct *);
183 static void moxa_put_char(struct tty_struct *, unsigned char);
184 static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
185 static void moxa_throttle(struct tty_struct *);
186 static void moxa_unthrottle(struct tty_struct *);
187 static void moxa_set_termios(struct tty_struct *, struct ktermios *);
188 static void moxa_stop(struct tty_struct *);
189 static void moxa_start(struct tty_struct *);
190 static void moxa_hangup(struct tty_struct *);
191 static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
192 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
193 unsigned int set, unsigned int clear);
194 static void moxa_poll(unsigned long);
195 static void set_tty_param(struct tty_struct *);
196 static int block_till_ready(struct tty_struct *, struct file *,
198 static void setup_empty_event(struct tty_struct *);
199 static void check_xmit_empty(unsigned long);
200 static void shut_down(struct moxa_str *);
201 static void receive_data(struct moxa_str *);
203 * moxa board interface functions:
205 static void MoxaDriverInit(void);
206 static int MoxaDriverIoctl(unsigned int, unsigned long, int);
207 static int MoxaDriverPoll(void);
208 static int MoxaPortsOfCard(int);
209 static int MoxaPortIsValid(int);
210 static void MoxaPortEnable(int);
211 static void MoxaPortDisable(int);
212 static long MoxaPortGetMaxBaud(int);
213 static long MoxaPortSetBaud(int, long);
214 static int MoxaPortSetTermio(int, struct ktermios *, speed_t);
215 static int MoxaPortGetLineOut(int, int *, int *);
216 static void MoxaPortLineCtrl(int, int, int);
217 static void MoxaPortFlowCtrl(int, int, int, int, int, int);
218 static int MoxaPortLineStatus(int);
219 static int MoxaPortDCDChange(int);
220 static int MoxaPortDCDON(int);
221 static void MoxaPortFlushData(int, int);
222 static int MoxaPortWriteData(int, unsigned char *, int);
223 static int MoxaPortReadData(int, struct tty_struct *tty);
224 static int MoxaPortTxQueue(int);
225 static int MoxaPortRxQueue(int);
226 static int MoxaPortTxFree(int);
227 static void MoxaPortTxDisable(int);
228 static void MoxaPortTxEnable(int);
229 static int MoxaPortResetBrkCnt(int);
230 static void MoxaPortSendBreak(int, int);
231 static int moxa_get_serial_info(struct moxa_str *, struct serial_struct __user *);
232 static int moxa_set_serial_info(struct moxa_str *, struct serial_struct __user *);
233 static void MoxaSetFifo(int port, int enable);
235 static const struct tty_operations moxa_ops = {
239 .write_room = moxa_write_room,
240 .flush_buffer = moxa_flush_buffer,
241 .chars_in_buffer = moxa_chars_in_buffer,
242 .flush_chars = moxa_flush_chars,
243 .put_char = moxa_put_char,
245 .throttle = moxa_throttle,
246 .unthrottle = moxa_unthrottle,
247 .set_termios = moxa_set_termios,
250 .hangup = moxa_hangup,
251 .tiocmget = moxa_tiocmget,
252 .tiocmset = moxa_tiocmset,
255 static struct tty_driver *moxaDriver;
256 static struct moxa_str moxaChannels[MAX_PORTS];
257 static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0);
258 static struct timer_list moxaEmptyTimer[MAX_PORTS];
259 static DEFINE_SPINLOCK(moxa_lock);
262 static int moxa_get_PCI_conf(struct pci_dev *p, int board_type,
263 struct moxa_board_conf *board)
265 board->baseAddr = pci_resource_start (p, 2);
266 board->boardType = board_type;
267 switch (board_type) {
268 case MOXA_BOARD_C218_ISA:
269 case MOXA_BOARD_C218_PCI:
273 case MOXA_BOARD_CP204J:
280 board->busType = MOXA_BUS_TYPE_PCI;
281 /* don't lose the reference in the next pci_get_device iteration */
282 board->pdev = pci_dev_get(p);
286 #endif /* CONFIG_PCI */
288 static int __init moxa_init(void)
293 printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION);
294 moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
298 moxaDriver->owner = THIS_MODULE;
299 moxaDriver->name = "ttyMX";
300 moxaDriver->major = ttymajor;
301 moxaDriver->minor_start = 0;
302 moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
303 moxaDriver->subtype = SERIAL_TYPE_NORMAL;
304 moxaDriver->init_termios = tty_std_termios;
305 moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
306 moxaDriver->init_termios.c_ispeed = 9600;
307 moxaDriver->init_termios.c_ospeed = 9600;
308 moxaDriver->flags = TTY_DRIVER_REAL_RAW;
309 tty_set_operations(moxaDriver, &moxa_ops);
311 for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) {
312 ch->type = PORT_16550A;
314 ch->close_delay = 5 * HZ / 10;
315 ch->closing_wait = 30 * HZ;
316 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
317 init_waitqueue_head(&ch->open_wait);
318 init_waitqueue_head(&ch->close_wait);
321 printk("Tty devices major number = %d\n", ttymajor);
323 if (tty_register_driver(moxaDriver)) {
324 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
325 put_tty_driver(moxaDriver);
328 for (i = 0; i < MAX_PORTS; i++)
329 setup_timer(&moxaEmptyTimer[i], check_xmit_empty,
330 (unsigned long)&moxaChannels[i]);
332 mod_timer(&moxaTimer, jiffies + HZ / 50);
334 /* Find the boards defined in source code */
336 for (i = 0; i < MAX_BOARDS; i++) {
337 if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) ||
338 (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) {
339 moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType;
340 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
341 moxa_boards[numBoards].numPorts = 8;
343 moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts;
344 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
345 moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr;
347 printk("Board %2d: %s board(baseAddr=%lx)\n",
349 moxa_brdname[moxa_boards[numBoards].boardType - 1],
350 moxa_boards[numBoards].baseAddr);
354 /* Find the boards defined form module args. */
356 for (i = 0; i < MAX_BOARDS; i++) {
357 if ((type[i] == MOXA_BOARD_C218_ISA) ||
358 (type[i] == MOXA_BOARD_C320_ISA)) {
360 printk("Board %2d: %s board(baseAddr=%lx)\n",
362 moxa_brdname[type[i] - 1],
363 (unsigned long) baseaddr[i]);
364 if (numBoards >= MAX_BOARDS) {
366 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
369 moxa_boards[numBoards].boardType = type[i];
370 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
371 moxa_boards[numBoards].numPorts = 8;
373 moxa_boards[numBoards].numPorts = numports[i];
374 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
375 moxa_boards[numBoards].baseAddr = baseaddr[i];
380 /* Find PCI boards here */
383 struct pci_dev *p = NULL;
384 int n = ARRAY_SIZE(moxa_pcibrds) - 1;
387 while ((p = pci_get_device(moxa_pcibrds[i].vendor, moxa_pcibrds[i].device, p))!=NULL)
389 if (pci_enable_device(p))
391 if (numBoards >= MAX_BOARDS) {
393 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
395 moxa_get_PCI_conf(p, moxa_pcibrds[i].driver_data,
396 &moxa_boards[numBoards]);
404 for (i = 0; i < numBoards; i++) {
405 moxaBaseAddr[i] = ioremap((unsigned long) moxa_boards[i].baseAddr, 0x4000);
411 static void __exit moxa_exit(void)
416 printk("Unloading module moxa ...\n");
418 del_timer_sync(&moxaTimer);
420 for (i = 0; i < MAX_PORTS; i++)
421 del_timer_sync(&moxaEmptyTimer[i]);
423 if (tty_unregister_driver(moxaDriver))
424 printk("Couldn't unregister MOXA Intellio family serial driver\n");
425 put_tty_driver(moxaDriver);
427 for (i = 0; i < MAX_BOARDS; i++) {
429 iounmap(moxaBaseAddr[i]);
430 if (moxa_boards[i].busType == MOXA_BUS_TYPE_PCI)
431 pci_dev_put(moxa_boards[i].pdev);
438 module_init(moxa_init);
439 module_exit(moxa_exit);
441 static int moxa_open(struct tty_struct *tty, struct file *filp)
448 if (port == MAX_PORTS) {
451 if (!MoxaPortIsValid(port)) {
452 tty->driver_data = NULL;
456 ch = &moxaChannels[port];
458 tty->driver_data = ch;
460 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
463 MoxaPortLineCtrl(ch->port, 1, 1);
464 MoxaPortEnable(ch->port);
465 ch->asyncflags |= ASYNC_INITIALIZED;
467 retval = block_till_ready(tty, filp, ch);
469 moxa_unthrottle(tty);
471 if (ch->type == PORT_16550A) {
472 MoxaSetFifo(ch->port, 1);
474 MoxaSetFifo(ch->port, 0);
480 static void moxa_close(struct tty_struct *tty, struct file *filp)
486 if (port == MAX_PORTS) {
489 if (!MoxaPortIsValid(port)) {
490 #ifdef SERIAL_DEBUG_CLOSE
491 printk("Invalid portno in moxa_close\n");
493 tty->driver_data = NULL;
496 if (tty->driver_data == NULL) {
499 if (tty_hung_up_p(filp)) {
502 ch = (struct moxa_str *) tty->driver_data;
504 if ((tty->count == 1) && (ch->count != 1)) {
505 printk("moxa_close: bad serial port count; tty->count is 1, "
506 "ch->count is %d\n", ch->count);
509 if (--ch->count < 0) {
510 printk("moxa_close: bad serial port count, device=%s\n",
517 ch->asyncflags |= ASYNC_CLOSING;
519 ch->cflag = tty->termios->c_cflag;
520 if (ch->asyncflags & ASYNC_INITIALIZED) {
521 setup_empty_event(tty);
522 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
523 del_timer_sync(&moxaEmptyTimer[ch->port]);
526 MoxaPortFlushData(port, 2);
528 if (tty->driver->flush_buffer)
529 tty->driver->flush_buffer(tty);
530 tty_ldisc_flush(tty);
535 if (ch->blocked_open) {
536 if (ch->close_delay) {
537 msleep_interruptible(jiffies_to_msecs(ch->close_delay));
539 wake_up_interruptible(&ch->open_wait);
541 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
542 wake_up_interruptible(&ch->close_wait);
545 static int moxa_write(struct tty_struct *tty,
546 const unsigned char *buf, int count)
552 ch = (struct moxa_str *) tty->driver_data;
557 spin_lock_irqsave(&moxa_lock, flags);
558 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
559 spin_unlock_irqrestore(&moxa_lock, flags);
561 /*********************************************
562 if ( !(ch->statusflags & LOWWAIT) &&
563 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
564 ************************************************/
565 ch->statusflags |= LOWWAIT;
569 static int moxa_write_room(struct tty_struct *tty)
575 ch = (struct moxa_str *) tty->driver_data;
578 return (MoxaPortTxFree(ch->port));
581 static void moxa_flush_buffer(struct tty_struct *tty)
583 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
587 MoxaPortFlushData(ch->port, 1);
591 static int moxa_chars_in_buffer(struct tty_struct *tty)
594 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
597 * Sigh...I have to check if driver_data is NULL here, because
598 * if an open() fails, the TTY subsystem eventually calls
599 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
600 * routine. And since the open() failed, we return 0 here. TDJ
604 chars = MoxaPortTxQueue(ch->port);
607 * Make it possible to wakeup anything waiting for output
608 * in tty_ioctl.c, etc.
610 if (!(ch->statusflags & EMPTYWAIT))
611 setup_empty_event(tty);
616 static void moxa_flush_chars(struct tty_struct *tty)
619 * Don't think I need this, because this is called to empty the TX
620 * buffer for the 16450, 16550, etc.
624 static void moxa_put_char(struct tty_struct *tty, unsigned char c)
630 ch = (struct moxa_str *) tty->driver_data;
634 spin_lock_irqsave(&moxa_lock, flags);
635 MoxaPortWriteData(port, &c, 1);
636 spin_unlock_irqrestore(&moxa_lock, flags);
637 /************************************************
638 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
639 *************************************************/
640 ch->statusflags |= LOWWAIT;
643 static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
645 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
647 int flag = 0, dtr, rts;
650 if ((port != MAX_PORTS) && (!ch))
653 MoxaPortGetLineOut(ch->port, &dtr, &rts);
658 dtr = MoxaPortLineStatus(ch->port);
668 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
669 unsigned int set, unsigned int clear)
671 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
676 if ((port != MAX_PORTS) && (!ch))
679 MoxaPortGetLineOut(ch->port, &dtr, &rts);
684 if (clear & TIOCM_RTS)
686 if (clear & TIOCM_DTR)
688 MoxaPortLineCtrl(ch->port, dtr, rts);
692 static int moxa_ioctl(struct tty_struct *tty, struct file *file,
693 unsigned int cmd, unsigned long arg)
695 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
697 void __user *argp = (void __user *)arg;
701 if ((port != MAX_PORTS) && (!ch))
705 case TCSBRK: /* SVID version: non-zero arg --> no break */
706 retval = tty_check_change(tty);
709 setup_empty_event(tty);
710 tty_wait_until_sent(tty, 0);
712 MoxaPortSendBreak(ch->port, 0);
714 case TCSBRKP: /* support for POSIX tcsendbreak() */
715 retval = tty_check_change(tty);
718 setup_empty_event(tty);
719 tty_wait_until_sent(tty, 0);
720 MoxaPortSendBreak(ch->port, arg);
723 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
725 if(get_user(retval, (unsigned long __user *) argp))
728 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
731 ch->asyncflags &= ~ASYNC_CHECK_CD;
733 ch->asyncflags |= ASYNC_CHECK_CD;
736 return moxa_get_serial_info(ch, argp);
739 return moxa_set_serial_info(ch, argp);
741 retval = MoxaDriverIoctl(cmd, arg, port);
746 static void moxa_throttle(struct tty_struct *tty)
748 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
750 ch->statusflags |= THROTTLE;
753 static void moxa_unthrottle(struct tty_struct *tty)
755 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
757 ch->statusflags &= ~THROTTLE;
760 static void moxa_set_termios(struct tty_struct *tty,
761 struct ktermios *old_termios)
763 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
768 if (!(old_termios->c_cflag & CLOCAL) &&
769 (tty->termios->c_cflag & CLOCAL))
770 wake_up_interruptible(&ch->open_wait);
773 static void moxa_stop(struct tty_struct *tty)
775 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
779 MoxaPortTxDisable(ch->port);
780 ch->statusflags |= TXSTOPPED;
784 static void moxa_start(struct tty_struct *tty)
786 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
791 if (!(ch->statusflags & TXSTOPPED))
794 MoxaPortTxEnable(ch->port);
795 ch->statusflags &= ~TXSTOPPED;
798 static void moxa_hangup(struct tty_struct *tty)
800 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
802 moxa_flush_buffer(tty);
806 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
808 wake_up_interruptible(&ch->open_wait);
811 static void moxa_poll(unsigned long ignored)
815 struct tty_struct *tp;
818 del_timer(&moxaTimer);
820 if (MoxaDriverPoll() < 0) {
821 mod_timer(&moxaTimer, jiffies + HZ / 50);
824 for (card = 0; card < MAX_BOARDS; card++) {
825 if ((ports = MoxaPortsOfCard(card)) <= 0)
827 ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
828 for (i = 0; i < ports; i++, ch++) {
829 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
831 if (!(ch->statusflags & THROTTLE) &&
832 (MoxaPortRxQueue(ch->port) > 0))
834 if ((tp = ch->tty) == 0)
836 if (ch->statusflags & LOWWAIT) {
837 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
839 ch->statusflags &= ~LOWWAIT;
844 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
845 tty_insert_flip_char(tp, 0, TTY_BREAK);
846 tty_schedule_flip(tp);
848 if (MoxaPortDCDChange(ch->port)) {
849 if (ch->asyncflags & ASYNC_CHECK_CD) {
850 if (MoxaPortDCDON(ch->port))
851 wake_up_interruptible(&ch->open_wait);
854 wake_up_interruptible(&ch->open_wait);
855 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
862 mod_timer(&moxaTimer, jiffies + HZ / 50);
865 /******************************************************************************/
867 static void set_tty_param(struct tty_struct *tty)
869 register struct ktermios *ts;
871 int rts, cts, txflow, rxflow, xany;
873 ch = (struct moxa_str *) tty->driver_data;
875 if (ts->c_cflag & CLOCAL)
876 ch->asyncflags &= ~ASYNC_CHECK_CD;
878 ch->asyncflags |= ASYNC_CHECK_CD;
879 rts = cts = txflow = rxflow = xany = 0;
880 if (ts->c_cflag & CRTSCTS)
882 if (ts->c_iflag & IXON)
884 if (ts->c_iflag & IXOFF)
886 if (ts->c_iflag & IXANY)
888 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
889 MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty));
892 static int block_till_ready(struct tty_struct *tty, struct file *filp,
895 DECLARE_WAITQUEUE(wait,current);
898 int do_clocal = C_CLOCAL(tty);
901 * If the device is in the middle of being closed, then block
902 * until it's done, and then try again.
904 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
905 if (ch->asyncflags & ASYNC_CLOSING)
906 interruptible_sleep_on(&ch->close_wait);
907 #ifdef SERIAL_DO_RESTART
908 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
911 return (-ERESTARTSYS);
917 * If non-blocking mode is set, then make the check up front
920 if (filp->f_flags & O_NONBLOCK) {
921 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
925 * Block waiting for the carrier detect and the line to become free
928 add_wait_queue(&ch->open_wait, &wait);
929 #ifdef SERIAL_DEBUG_OPEN
930 printk("block_til_ready before block: ttys%d, count = %d\n",
931 ch->line, ch->count);
933 spin_lock_irqsave(&moxa_lock, flags);
934 if (!tty_hung_up_p(filp))
937 spin_unlock_irqrestore(&moxa_lock, flags);
940 set_current_state(TASK_INTERRUPTIBLE);
941 if (tty_hung_up_p(filp) ||
942 !(ch->asyncflags & ASYNC_INITIALIZED)) {
943 #ifdef SERIAL_DO_RESTART
944 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
947 retval = -ERESTARTSYS;
953 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
954 MoxaPortDCDON(ch->port)))
957 if (signal_pending(current)) {
958 retval = -ERESTARTSYS;
963 set_current_state(TASK_RUNNING);
964 remove_wait_queue(&ch->open_wait, &wait);
966 spin_lock_irqsave(&moxa_lock, flags);
967 if (!tty_hung_up_p(filp))
970 spin_unlock_irqrestore(&moxa_lock, flags);
971 #ifdef SERIAL_DEBUG_OPEN
972 printk("block_til_ready after blocking: ttys%d, count = %d\n",
973 ch->line, ch->count);
977 /* FIXME: review to see if we need to use set_bit on these */
978 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
982 static void setup_empty_event(struct tty_struct *tty)
984 struct moxa_str *ch = tty->driver_data;
987 spin_lock_irqsave(&moxa_lock, flags);
988 ch->statusflags |= EMPTYWAIT;
989 mod_timer(&moxaEmptyTimer[ch->port], jiffies + HZ);
990 spin_unlock_irqrestore(&moxa_lock, flags);
993 static void check_xmit_empty(unsigned long data)
997 ch = (struct moxa_str *) data;
998 del_timer_sync(&moxaEmptyTimer[ch->port]);
999 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1000 if (MoxaPortTxQueue(ch->port) == 0) {
1001 ch->statusflags &= ~EMPTYWAIT;
1002 tty_wakeup(ch->tty);
1005 mod_timer(&moxaEmptyTimer[ch->port], jiffies + HZ);
1007 ch->statusflags &= ~EMPTYWAIT;
1010 static void shut_down(struct moxa_str *ch)
1012 struct tty_struct *tp;
1014 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1019 MoxaPortDisable(ch->port);
1022 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1024 if (tp->termios->c_cflag & HUPCL)
1025 MoxaPortLineCtrl(ch->port, 0, 0);
1027 ch->asyncflags &= ~ASYNC_INITIALIZED;
1030 static void receive_data(struct moxa_str *ch)
1032 struct tty_struct *tp;
1033 struct ktermios *ts;
1034 unsigned long flags;
1040 /**************************************************
1041 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1042 *****************************************************/
1044 MoxaPortFlushData(ch->port, 0);
1047 spin_lock_irqsave(&moxa_lock, flags);
1048 MoxaPortReadData(ch->port, tp);
1049 spin_unlock_irqrestore(&moxa_lock, flags);
1050 tty_schedule_flip(tp);
1053 #define Magic_code 0x404
1056 * System Configuration
1059 * for C218 BIOS initialization
1061 #define C218_ConfBase 0x800
1062 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1063 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1064 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1065 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1066 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1067 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1068 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1069 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1070 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1071 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1073 #define C218_LoadBuf 0x0F00
1074 #define C218_KeyCode 0x218
1075 #define CP204J_KeyCode 0x204
1078 * for C320 BIOS initialization
1080 #define C320_ConfBase 0x800
1081 #define C320_LoadBuf 0x0f00
1082 #define STS_init 0x05 /* for C320_status */
1084 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1085 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1086 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1087 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1088 #define C320check_sum C320_ConfBase + 8 /* WORD */
1089 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1090 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1091 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1093 #define C320_KeyCode 0x320
1095 #define FixPage_addr 0x0000 /* starting addr of static page */
1096 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1097 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1098 #define Control_reg 0x1ff0 /* select page and reset control */
1099 #define HW_reset 0x80
1104 #define FC_CardReset 0x80
1105 #define FC_ChannelReset 1 /* C320 firmware not supported */
1106 #define FC_EnableCH 2
1107 #define FC_DisableCH 3
1108 #define FC_SetParam 4
1109 #define FC_SetMode 5
1110 #define FC_SetRate 6
1111 #define FC_LineControl 7
1112 #define FC_LineStatus 8
1113 #define FC_XmitControl 9
1114 #define FC_FlushQueue 10
1115 #define FC_SendBreak 11
1116 #define FC_StopBreak 12
1117 #define FC_LoopbackON 13
1118 #define FC_LoopbackOFF 14
1119 #define FC_ClrIrqTable 15
1120 #define FC_SendXon 16
1121 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1122 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1123 #define FC_SetBreakIrq 19
1124 #define FC_SetLineIrq 20
1125 #define FC_SetFlowCtl 21
1126 #define FC_GenIrq 22
1127 #define FC_InCD180 23
1128 #define FC_OutCD180 24
1129 #define FC_InUARTreg 23
1130 #define FC_OutUARTreg 24
1131 #define FC_SetXonXoff 25
1132 #define FC_OutCD180CCR 26
1133 #define FC_ExtIQueue 27
1134 #define FC_ExtOQueue 28
1135 #define FC_ClrLineIrq 29
1136 #define FC_HWFlowCtl 30
1137 #define FC_GetClockRate 35
1138 #define FC_SetBaud 36
1139 #define FC_SetDataMode 41
1140 #define FC_GetCCSR 43
1141 #define FC_GetDataError 45
1142 #define FC_RxControl 50
1143 #define FC_ImmSend 51
1144 #define FC_SetXonState 52
1145 #define FC_SetXoffState 53
1146 #define FC_SetRxFIFOTrig 54
1147 #define FC_SetTxFIFOCnt 55
1148 #define FC_UnixRate 56
1149 #define FC_UnixResetTimer 57
1151 #define RxFIFOTrig1 0
1152 #define RxFIFOTrig4 1
1153 #define RxFIFOTrig8 2
1154 #define RxFIFOTrig14 3
1159 #define DRAM_global 0
1160 #define INT_data (DRAM_global + 0)
1161 #define Config_base (DRAM_global + 0x108)
1163 #define IRQindex (INT_data + 0)
1164 #define IRQpending (INT_data + 4)
1165 #define IRQtable (INT_data + 8)
1170 #define IntrRx 0x01 /* receiver data O.K. */
1171 #define IntrTx 0x02 /* transmit buffer empty */
1172 #define IntrFunc 0x04 /* function complete */
1173 #define IntrBreak 0x08 /* received break */
1174 #define IntrLine 0x10 /* line status change
1176 #define IntrIntr 0x20 /* received INTR code */
1177 #define IntrQuit 0x40 /* received QUIT code */
1178 #define IntrEOF 0x80 /* received EOF code */
1180 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1181 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1183 #define Magic_no (Config_base + 0)
1184 #define Card_model_no (Config_base + 2)
1185 #define Total_ports (Config_base + 4)
1186 #define Module_cnt (Config_base + 8)
1187 #define Module_no (Config_base + 10)
1188 #define Timer_10ms (Config_base + 14)
1189 #define Disable_IRQ (Config_base + 20)
1190 #define TMS320_PORT1 (Config_base + 22)
1191 #define TMS320_PORT2 (Config_base + 24)
1192 #define TMS320_CLOCK (Config_base + 26)
1195 * DATA BUFFER in DRAM
1197 #define Extern_table 0x400 /* Base address of the external table
1198 (24 words * 64) total 3K bytes
1199 (24 words * 128) total 6K bytes */
1200 #define Extern_size 0x60 /* 96 bytes */
1201 #define RXrptr 0x00 /* read pointer for RX buffer */
1202 #define RXwptr 0x02 /* write pointer for RX buffer */
1203 #define TXrptr 0x04 /* read pointer for TX buffer */
1204 #define TXwptr 0x06 /* write pointer for TX buffer */
1205 #define HostStat 0x08 /* IRQ flag and general flag */
1206 #define FlagStat 0x0A
1207 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1208 /* x x x x | | | | */
1209 /* | | | + CTS flow */
1210 /* | | +--- RTS flow */
1211 /* | +------ TX Xon/Xoff */
1212 /* +--------- RX Xon/Xoff */
1213 #define Break_cnt 0x0E /* received break count */
1214 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1215 #define RX_mask 0x12
1216 #define TX_mask 0x14
1217 #define Ofs_rxb 0x16
1218 #define Ofs_txb 0x18
1219 #define Page_rxb 0x1A
1220 #define Page_txb 0x1C
1221 #define EndPage_rxb 0x1E
1222 #define EndPage_txb 0x20
1223 #define Data_error 0x22
1224 #define RxTrigger 0x28
1225 #define TxTrigger 0x2a
1227 #define rRXwptr 0x34
1228 #define Low_water 0x36
1230 #define FuncCode 0x40
1231 #define FuncArg 0x42
1232 #define FuncArg1 0x44
1234 #define C218rx_size 0x2000 /* 8K bytes */
1235 #define C218tx_size 0x8000 /* 32K bytes */
1237 #define C218rx_mask (C218rx_size - 1)
1238 #define C218tx_mask (C218tx_size - 1)
1240 #define C320p8rx_size 0x2000
1241 #define C320p8tx_size 0x8000
1242 #define C320p8rx_mask (C320p8rx_size - 1)
1243 #define C320p8tx_mask (C320p8tx_size - 1)
1245 #define C320p16rx_size 0x2000
1246 #define C320p16tx_size 0x4000
1247 #define C320p16rx_mask (C320p16rx_size - 1)
1248 #define C320p16tx_mask (C320p16tx_size - 1)
1250 #define C320p24rx_size 0x2000
1251 #define C320p24tx_size 0x2000
1252 #define C320p24rx_mask (C320p24rx_size - 1)
1253 #define C320p24tx_mask (C320p24tx_size - 1)
1255 #define C320p32rx_size 0x1000
1256 #define C320p32tx_size 0x1000
1257 #define C320p32rx_mask (C320p32rx_size - 1)
1258 #define C320p32tx_mask (C320p32tx_size - 1)
1260 #define Page_size 0x2000
1261 #define Page_mask (Page_size - 1)
1262 #define C218rx_spage 3
1263 #define C218tx_spage 4
1264 #define C218rx_pageno 1
1265 #define C218tx_pageno 4
1266 #define C218buf_pageno 5
1268 #define C320p8rx_spage 3
1269 #define C320p8tx_spage 4
1270 #define C320p8rx_pgno 1
1271 #define C320p8tx_pgno 4
1272 #define C320p8buf_pgno 5
1274 #define C320p16rx_spage 3
1275 #define C320p16tx_spage 4
1276 #define C320p16rx_pgno 1
1277 #define C320p16tx_pgno 2
1278 #define C320p16buf_pgno 3
1280 #define C320p24rx_spage 3
1281 #define C320p24tx_spage 4
1282 #define C320p24rx_pgno 1
1283 #define C320p24tx_pgno 1
1284 #define C320p24buf_pgno 2
1286 #define C320p32rx_spage 3
1287 #define C320p32tx_ofs C320p32rx_size
1288 #define C320p32tx_spage 3
1289 #define C320p32buf_pgno 1
1294 #define WakeupRx 0x01
1295 #define WakeupTx 0x02
1296 #define WakeupBreak 0x08
1297 #define WakeupLine 0x10
1298 #define WakeupIntr 0x20
1299 #define WakeupQuit 0x40
1300 #define WakeupEOF 0x80 /* used in VTIME control */
1301 #define WakeupRxTrigger 0x100
1302 #define WakeupTxTrigger 0x200
1306 #define Rx_over 0x01
1307 #define Xoff_state 0x02
1308 #define Tx_flowOff 0x04
1309 #define Tx_enable 0x08
1310 #define CTS_state 0x10
1311 #define DSR_state 0x20
1312 #define DCD_state 0x80
1316 #define CTS_FlowCtl 1
1317 #define RTS_FlowCtl 2
1318 #define Tx_FlowCtl 4
1319 #define Rx_FlowCtl 8
1320 #define IXM_IXANY 0x10
1322 #define LowWater 128
1330 /* mode definition */
1336 #define MX_STOP1 0x00
1337 #define MX_STOP15 0x04
1338 #define MX_STOP2 0x08
1340 #define MX_PARNONE 0x00
1341 #define MX_PAREVEN 0x40
1342 #define MX_PARODD 0xC0
1350 int rxcnt[MAX_PORTS];
1351 int txcnt[MAX_PORTS];
1354 #define DCD_changed 0x01
1355 #define DCD_oldstate 0x80
1357 static unsigned char moxaBuff[10240];
1358 static void __iomem *moxaIntNdx[MAX_BOARDS];
1359 static void __iomem *moxaIntPend[MAX_BOARDS];
1360 static void __iomem *moxaIntTable[MAX_BOARDS];
1361 static char moxaChkPort[MAX_PORTS];
1362 static char moxaLineCtrl[MAX_PORTS];
1363 static void __iomem *moxaTableAddr[MAX_PORTS];
1364 static long moxaCurBaud[MAX_PORTS];
1365 static char moxaDCDState[MAX_PORTS];
1366 static char moxaLowChkFlag[MAX_PORTS];
1367 static int moxaLowWaterChk;
1368 static int moxaCard;
1369 static struct mon_str moxaLog;
1370 static int moxaFuncTout = HZ / 2;
1371 static ushort moxaBreakCnt[MAX_PORTS];
1373 static void moxadelay(int);
1374 static void moxafunc(void __iomem *, int, ushort);
1375 static void wait_finish(void __iomem *);
1376 static void low_water_check(void __iomem *);
1377 static int moxaloadbios(int, unsigned char __user *, int);
1378 static int moxafindcard(int);
1379 static int moxaload320b(int, unsigned char __user *, int);
1380 static int moxaloadcode(int, unsigned char __user *, int);
1381 static int moxaloadc218(int, void __iomem *, int);
1382 static int moxaloadc320(int, void __iomem *, int, int *);
1384 /*****************************************************************************
1385 * Driver level functions: *
1386 * 1. MoxaDriverInit(void); *
1387 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1388 * 3. MoxaDriverPoll(void); *
1389 *****************************************************************************/
1390 void MoxaDriverInit(void)
1394 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1397 moxaLowWaterChk = 0;
1398 for (i = 0; i < MAX_PORTS; i++) {
1400 moxaLowChkFlag[i] = 0;
1401 moxaLineCtrl[i] = 0;
1402 moxaLog.rxcnt[i] = 0;
1403 moxaLog.txcnt[i] = 0;
1408 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1409 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1410 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1411 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1412 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1413 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1414 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1415 #define MOXA_GETDATACOUNT (MOXA + 23)
1416 #define MOXA_GET_IOQUEUE (MOXA + 27)
1417 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1418 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1419 #define MOXA_GET_MAJOR (MOXA + 63)
1420 #define MOXA_GET_CUMAJOR (MOXA + 64)
1421 #define MOXA_GETMSTATUS (MOXA + 65)
1435 static struct moxaq_str temp_queue[MAX_PORTS];
1436 static struct dl_str dltmp;
1438 void MoxaPortFlushData(int port, int mode)
1440 void __iomem *ofsAddr;
1441 if ((mode < 0) || (mode > 2))
1443 ofsAddr = moxaTableAddr[port];
1444 moxafunc(ofsAddr, FC_FlushQueue, mode);
1446 moxaLowChkFlag[port] = 0;
1447 low_water_check(ofsAddr);
1451 int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1455 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1456 void __user *argp = (void __user *)arg;
1458 if (port == MAX_PORTS) {
1459 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1460 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1461 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1462 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1463 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1468 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS *
1469 sizeof(struct moxa_board_conf)))
1472 case MOXA_INIT_DRIVER:
1473 if ((int) arg == 0x404)
1476 case MOXA_GETDATACOUNT:
1477 moxaLog.tick = jiffies;
1478 if(copy_to_user(argp, &moxaLog, sizeof(struct mon_str)))
1481 case MOXA_FLUSH_QUEUE:
1482 MoxaPortFlushData(port, arg);
1484 case MOXA_GET_IOQUEUE:
1485 for (i = 0; i < MAX_PORTS; i++) {
1486 if (moxaChkPort[i]) {
1487 temp_queue[i].inq = MoxaPortRxQueue(i);
1488 temp_queue[i].outq = MoxaPortTxQueue(i);
1491 if(copy_to_user(argp, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
1494 case MOXA_GET_OQUEUE:
1495 i = MoxaPortTxQueue(port);
1496 return put_user(i, (unsigned long __user *)argp);
1497 case MOXA_GET_IQUEUE:
1498 i = MoxaPortRxQueue(port);
1499 return put_user(i, (unsigned long __user *)argp);
1500 case MOXA_GET_MAJOR:
1501 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1504 case MOXA_GET_CUMAJOR:
1506 if(copy_to_user(argp, &i, sizeof(int)))
1509 case MOXA_GETMSTATUS:
1510 for (i = 0; i < MAX_PORTS; i++) {
1512 GMStatus[i].dcd = 0;
1513 GMStatus[i].dsr = 0;
1514 GMStatus[i].cts = 0;
1515 if (!moxaChkPort[i]) {
1518 status = MoxaPortLineStatus(moxaChannels[i].port);
1520 GMStatus[i].cts = 1;
1522 GMStatus[i].dsr = 1;
1524 GMStatus[i].dcd = 1;
1527 if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
1528 GMStatus[i].cflag = moxaChannels[i].cflag;
1530 GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
1532 if(copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
1536 return (-ENOIOCTLCMD);
1537 case MOXA_LOAD_BIOS:
1538 case MOXA_FIND_BOARD:
1539 case MOXA_LOAD_C320B:
1540 case MOXA_LOAD_CODE:
1541 if (!capable(CAP_SYS_RAWIO))
1546 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1548 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
1553 case MOXA_LOAD_BIOS:
1554 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1556 case MOXA_FIND_BOARD:
1557 return moxafindcard(dltmp.cardno);
1558 case MOXA_LOAD_C320B:
1559 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1560 default: /* to keep gcc happy */
1562 case MOXA_LOAD_CODE:
1563 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1571 int MoxaDriverPoll(void)
1573 register ushort temp;
1575 void __iomem *ofsAddr;
1581 for (card = 0; card < MAX_BOARDS; card++) {
1582 if (loadstat[card] == 0)
1584 if ((ports = moxa_boards[card].numPorts) == 0)
1586 if (readb(moxaIntPend[card]) == 0xff) {
1587 ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
1588 p = card * MAX_PORTS_PER_BOARD;
1590 for (port = 0; port < ports; port += 2, p++) {
1591 if ((temp = readw(ip + port)) != 0) {
1592 writew(0, ip + port);
1593 ofsAddr = moxaTableAddr[p];
1595 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1596 if (temp & IntrBreak) {
1599 if (temp & IntrLine) {
1600 if (readb(ofsAddr + FlagStat) & DCD_state) {
1601 if ((moxaDCDState[p] & DCD_oldstate) == 0)
1602 moxaDCDState[p] = (DCD_oldstate |
1605 if (moxaDCDState[p] & DCD_oldstate)
1606 moxaDCDState[p] = DCD_changed;
1611 writeb(0, moxaIntPend[card]);
1613 if (moxaLowWaterChk) {
1614 p = card * MAX_PORTS_PER_BOARD;
1615 for (port = 0; port < ports; port++, p++) {
1616 if (moxaLowChkFlag[p]) {
1617 moxaLowChkFlag[p] = 0;
1618 ofsAddr = moxaTableAddr[p];
1619 low_water_check(ofsAddr);
1624 moxaLowWaterChk = 0;
1628 /*****************************************************************************
1629 * Card level function: *
1630 * 1. MoxaPortsOfCard(int cardno); *
1631 *****************************************************************************/
1632 int MoxaPortsOfCard(int cardno)
1635 if (moxa_boards[cardno].boardType == 0)
1637 return (moxa_boards[cardno].numPorts);
1640 /*****************************************************************************
1641 * Port level functions: *
1642 * 1. MoxaPortIsValid(int port); *
1643 * 2. MoxaPortEnable(int port); *
1644 * 3. MoxaPortDisable(int port); *
1645 * 4. MoxaPortGetMaxBaud(int port); *
1646 * 6. MoxaPortSetBaud(int port, long baud); *
1647 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1648 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1649 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1650 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1651 * 12. MoxaPortLineStatus(int port); *
1652 * 13. MoxaPortDCDChange(int port); *
1653 * 14. MoxaPortDCDON(int port); *
1654 * 15. MoxaPortFlushData(int port, int mode); *
1655 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1656 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1657 * 20. MoxaPortTxQueue(int port); *
1658 * 21. MoxaPortTxFree(int port); *
1659 * 22. MoxaPortRxQueue(int port); *
1660 * 24. MoxaPortTxDisable(int port); *
1661 * 25. MoxaPortTxEnable(int port); *
1662 * 27. MoxaPortResetBrkCnt(int port); *
1663 * 30. MoxaPortSendBreak(int port, int ticks); *
1664 *****************************************************************************/
1666 * Moxa Port Number Description:
1668 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1669 * the port number using in MOXA driver functions will be 0 to 31 for
1670 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1671 * to 127 for fourth. For example, if you setup three MOXA boards,
1672 * first board is C218, second board is C320-16 and third board is
1673 * C320-32. The port number of first board (C218 - 8 ports) is from
1674 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1675 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1676 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1677 * 127 will be invalid.
1680 * Moxa Functions Description:
1682 * Function 1: Driver initialization routine, this routine must be
1683 * called when initialized driver.
1685 * void MoxaDriverInit();
1688 * Function 2: Moxa driver private IOCTL command processing.
1690 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1692 * unsigned int cmd : IOCTL command
1693 * unsigned long arg : IOCTL argument
1694 * int port : port number (0 - 127)
1701 * Function 3: Moxa driver polling process routine.
1703 * int MoxaDriverPoll(void);
1705 * return: 0 ; polling O.K.
1706 * -1 : no any Moxa card.
1709 * Function 4: Get the ports of this card.
1711 * int MoxaPortsOfCard(int cardno);
1713 * int cardno : card number (0 - 3)
1715 * return: 0 : this card is invalid
1719 * Function 5: Check this port is valid or invalid
1721 * int MoxaPortIsValid(int port);
1722 * int port : port number (0 - 127, ref port description)
1724 * return: 0 : this port is invalid
1725 * 1 : this port is valid
1728 * Function 6: Enable this port to start Tx/Rx data.
1730 * void MoxaPortEnable(int port);
1731 * int port : port number (0 - 127)
1734 * Function 7: Disable this port
1736 * void MoxaPortDisable(int port);
1737 * int port : port number (0 - 127)
1740 * Function 8: Get the maximun available baud rate of this port.
1742 * long MoxaPortGetMaxBaud(int port);
1743 * int port : port number (0 - 127)
1745 * return: 0 : this port is invalid
1746 * 38400/57600/115200 bps
1749 * Function 10: Setting baud rate of this port.
1751 * long MoxaPortSetBaud(int port, long baud);
1752 * int port : port number (0 - 127)
1753 * long baud : baud rate (50 - 115200)
1755 * return: 0 : this port is invalid or baud < 50
1756 * 50 - 115200 : the real baud rate set to the port, if
1757 * the argument baud is large than maximun
1758 * available baud rate, the real setting
1759 * baud rate will be the maximun baud rate.
1762 * Function 12: Configure the port.
1764 * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud);
1765 * int port : port number (0 - 127)
1766 * struct ktermios * termio : termio structure pointer
1767 * speed_t baud : baud rate
1769 * return: -1 : this port is invalid or termio == NULL
1773 * Function 13: Get the DTR/RTS state of this port.
1775 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1776 * int port : port number (0 - 127)
1777 * int * dtrState : pointer to INT to receive the current DTR
1778 * state. (if NULL, this function will not
1779 * write to this address)
1780 * int * rtsState : pointer to INT to receive the current RTS
1781 * state. (if NULL, this function will not
1782 * write to this address)
1784 * return: -1 : this port is invalid
1788 * Function 14: Setting the DTR/RTS output state of this port.
1790 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1791 * int port : port number (0 - 127)
1792 * int dtrState : DTR output state (0: off, 1: on)
1793 * int rtsState : RTS output state (0: off, 1: on)
1796 * Function 15: Setting the flow control of this port.
1798 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1799 * int txFlow,int xany);
1800 * int port : port number (0 - 127)
1801 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1802 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1803 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1804 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1805 * int xany : S/W XANY flow control (0: no, 1: yes)
1808 * Function 16: Get ths line status of this port
1810 * int MoxaPortLineStatus(int port);
1811 * int port : port number (0 - 127)
1813 * return: Bit 0 - CTS state (0: off, 1: on)
1814 * Bit 1 - DSR state (0: off, 1: on)
1815 * Bit 2 - DCD state (0: off, 1: on)
1818 * Function 17: Check the DCD state has changed since the last read
1821 * int MoxaPortDCDChange(int port);
1822 * int port : port number (0 - 127)
1824 * return: 0 : no changed
1825 * 1 : DCD has changed
1828 * Function 18: Check ths current DCD state is ON or not.
1830 * int MoxaPortDCDON(int port);
1831 * int port : port number (0 - 127)
1833 * return: 0 : DCD off
1837 * Function 19: Flush the Rx/Tx buffer data of this port.
1839 * void MoxaPortFlushData(int port, int mode);
1840 * int port : port number (0 - 127)
1842 * 0 : flush the Rx buffer
1843 * 1 : flush the Tx buffer
1844 * 2 : flush the Rx and Tx buffer
1847 * Function 20: Write data.
1849 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
1850 * int port : port number (0 - 127)
1851 * unsigned char * buffer : pointer to write data buffer.
1852 * int length : write data length
1854 * return: 0 - length : real write data length
1857 * Function 21: Read data.
1859 * int MoxaPortReadData(int port, struct tty_struct *tty);
1860 * int port : port number (0 - 127)
1861 * struct tty_struct *tty : tty for data
1863 * return: 0 - length : real read data length
1866 * Function 24: Get the Tx buffer current queued data bytes
1868 * int MoxaPortTxQueue(int port);
1869 * int port : port number (0 - 127)
1871 * return: .. : Tx buffer current queued data bytes
1874 * Function 25: Get the Tx buffer current free space
1876 * int MoxaPortTxFree(int port);
1877 * int port : port number (0 - 127)
1879 * return: .. : Tx buffer current free space
1882 * Function 26: Get the Rx buffer current queued data bytes
1884 * int MoxaPortRxQueue(int port);
1885 * int port : port number (0 - 127)
1887 * return: .. : Rx buffer current queued data bytes
1890 * Function 28: Disable port data transmission.
1892 * void MoxaPortTxDisable(int port);
1893 * int port : port number (0 - 127)
1896 * Function 29: Enable port data transmission.
1898 * void MoxaPortTxEnable(int port);
1899 * int port : port number (0 - 127)
1902 * Function 31: Get the received BREAK signal count and reset it.
1904 * int MoxaPortResetBrkCnt(int port);
1905 * int port : port number (0 - 127)
1907 * return: 0 - .. : BREAK signal count
1910 * Function 34: Send out a BREAK signal.
1912 * void MoxaPortSendBreak(int port, int ms100);
1913 * int port : port number (0 - 127)
1914 * int ms100 : break signal time interval.
1915 * unit: 100 mini-second. if ms100 == 0, it will
1916 * send out a about 250 ms BREAK signal.
1919 int MoxaPortIsValid(int port)
1924 if (moxaChkPort[port] == 0)
1929 void MoxaPortEnable(int port)
1931 void __iomem *ofsAddr;
1932 int MoxaPortLineStatus(int);
1933 short lowwater = 512;
1935 ofsAddr = moxaTableAddr[port];
1936 writew(lowwater, ofsAddr + Low_water);
1937 moxaBreakCnt[port] = 0;
1938 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
1939 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
1940 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
1942 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
1945 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
1946 moxafunc(ofsAddr, FC_FlushQueue, 2);
1948 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
1949 MoxaPortLineStatus(port);
1952 void MoxaPortDisable(int port)
1954 void __iomem *ofsAddr = moxaTableAddr[port];
1956 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
1957 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
1958 writew(0, ofsAddr + HostStat);
1959 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
1962 long MoxaPortGetMaxBaud(int port)
1964 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
1965 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
1972 long MoxaPortSetBaud(int port, long baud)
1974 void __iomem *ofsAddr;
1978 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
1980 ofsAddr = moxaTableAddr[port];
1984 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
1985 else if (max == 57600L)
1986 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
1988 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
1990 moxafunc(ofsAddr, FC_SetBaud, val);
1992 moxaCurBaud[port] = baud;
1996 int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud)
1998 void __iomem *ofsAddr;
2002 if (moxaChkPort[port] == 0 || termio == 0)
2004 ofsAddr = moxaTableAddr[port];
2005 cflag = termio->c_cflag; /* termio->c_cflag */
2007 mode = termio->c_cflag & CSIZE;
2010 else if (mode == CS6)
2012 else if (mode == CS7)
2014 else if (mode == CS8)
2017 if (termio->c_cflag & CSTOPB) {
2025 if (termio->c_cflag & PARENB) {
2026 if (termio->c_cflag & PARODD)
2033 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2035 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2036 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2037 if (baud >= 921600L)
2040 MoxaPortSetBaud(port, baud);
2042 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2043 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2044 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2045 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2046 wait_finish(ofsAddr);
2052 int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2055 if (!MoxaPortIsValid(port))
2058 if (moxaLineCtrl[port] & DTR_ON)
2064 if (moxaLineCtrl[port] & RTS_ON)
2072 void MoxaPortLineCtrl(int port, int dtr, int rts)
2074 void __iomem *ofsAddr;
2077 ofsAddr = moxaTableAddr[port];
2083 moxaLineCtrl[port] = mode;
2084 moxafunc(ofsAddr, FC_LineControl, mode);
2087 void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2089 void __iomem *ofsAddr;
2092 ofsAddr = moxaTableAddr[port];
2095 mode |= RTS_FlowCtl;
2097 mode |= CTS_FlowCtl;
2104 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2107 int MoxaPortLineStatus(int port)
2109 void __iomem *ofsAddr;
2112 ofsAddr = moxaTableAddr[port];
2113 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2114 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2115 moxafunc(ofsAddr, FC_LineStatus, 0);
2116 val = readw(ofsAddr + FuncArg);
2118 val = readw(ofsAddr + FlagStat) >> 4;
2123 if ((moxaDCDState[port] & DCD_oldstate) == 0)
2124 moxaDCDState[port] = (DCD_oldstate | DCD_changed);
2126 if (moxaDCDState[port] & DCD_oldstate)
2127 moxaDCDState[port] = DCD_changed;
2133 int MoxaPortDCDChange(int port)
2137 if (moxaChkPort[port] == 0)
2139 n = moxaDCDState[port];
2140 moxaDCDState[port] &= ~DCD_changed;
2145 int MoxaPortDCDON(int port)
2149 if (moxaChkPort[port] == 0)
2151 if (moxaDCDState[port] & DCD_oldstate)
2158 int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2163 ushort head, tx_mask, spage, epage;
2164 ushort pageno, pageofs, bufhead;
2165 void __iomem *baseAddr, *ofsAddr, *ofs;
2167 ofsAddr = moxaTableAddr[port];
2168 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2169 tx_mask = readw(ofsAddr + TX_mask);
2170 spage = readw(ofsAddr + Page_txb);
2171 epage = readw(ofsAddr + EndPage_txb);
2172 tail = readw(ofsAddr + TXwptr);
2173 head = readw(ofsAddr + TXrptr);
2174 c = (head > tail) ? (head - tail - 1)
2175 : (head - tail + tx_mask);
2178 moxaLog.txcnt[port] += c;
2180 if (spage == epage) {
2181 bufhead = readw(ofsAddr + Ofs_txb);
2182 writew(spage, baseAddr + Control_reg);
2185 len = head - tail - 1;
2187 len = tx_mask + 1 - tail;
2188 len = (c > len) ? len : c;
2189 ofs = baseAddr + DynPage_addr + bufhead + tail;
2190 for (i = 0; i < len; i++)
2191 writeb(*buffer++, ofs + i);
2192 tail = (tail + len) & tx_mask;
2195 writew(tail, ofsAddr + TXwptr);
2198 pageno = spage + (tail >> 13);
2199 pageofs = tail & Page_mask;
2201 cnt = Page_size - pageofs;
2205 writeb(pageno, baseAddr + Control_reg);
2206 ofs = baseAddr + DynPage_addr + pageofs;
2207 for (i = 0; i < cnt; i++)
2208 writeb(*buffer++, ofs + i);
2210 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2213 if (++pageno == epage)
2218 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2222 int MoxaPortReadData(int port, struct tty_struct *tty)
2224 register ushort head, pageofs;
2225 int i, count, cnt, len, total, remain;
2226 ushort tail, rx_mask, spage, epage;
2227 ushort pageno, bufhead;
2228 void __iomem *baseAddr, *ofsAddr, *ofs;
2230 ofsAddr = moxaTableAddr[port];
2231 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2232 head = readw(ofsAddr + RXrptr);
2233 tail = readw(ofsAddr + RXwptr);
2234 rx_mask = readw(ofsAddr + RX_mask);
2235 spage = readw(ofsAddr + Page_rxb);
2236 epage = readw(ofsAddr + EndPage_rxb);
2237 count = (tail >= head) ? (tail - head)
2238 : (tail - head + rx_mask + 1);
2243 remain = count - total;
2244 moxaLog.rxcnt[port] += total;
2246 if (spage == epage) {
2247 bufhead = readw(ofsAddr + Ofs_rxb);
2248 writew(spage, baseAddr + Control_reg);
2253 len = rx_mask + 1 - head;
2254 len = (count > len) ? len : count;
2255 ofs = baseAddr + DynPage_addr + bufhead + head;
2256 for (i = 0; i < len; i++)
2257 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2258 head = (head + len) & rx_mask;
2261 writew(head, ofsAddr + RXrptr);
2264 pageno = spage + (head >> 13);
2265 pageofs = head & Page_mask;
2267 cnt = Page_size - pageofs;
2271 writew(pageno, baseAddr + Control_reg);
2272 ofs = baseAddr + DynPage_addr + pageofs;
2273 for (i = 0; i < cnt; i++)
2274 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2276 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2279 if (++pageno == epage)
2284 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2285 moxaLowWaterChk = 1;
2286 moxaLowChkFlag[port] = 1;
2292 int MoxaPortTxQueue(int port)
2294 void __iomem *ofsAddr;
2295 ushort rptr, wptr, mask;
2298 ofsAddr = moxaTableAddr[port];
2299 rptr = readw(ofsAddr + TXrptr);
2300 wptr = readw(ofsAddr + TXwptr);
2301 mask = readw(ofsAddr + TX_mask);
2302 len = (wptr - rptr) & mask;
2306 int MoxaPortTxFree(int port)
2308 void __iomem *ofsAddr;
2309 ushort rptr, wptr, mask;
2312 ofsAddr = moxaTableAddr[port];
2313 rptr = readw(ofsAddr + TXrptr);
2314 wptr = readw(ofsAddr + TXwptr);
2315 mask = readw(ofsAddr + TX_mask);
2316 len = mask - ((wptr - rptr) & mask);
2320 int MoxaPortRxQueue(int port)
2322 void __iomem *ofsAddr;
2323 ushort rptr, wptr, mask;
2326 ofsAddr = moxaTableAddr[port];
2327 rptr = readw(ofsAddr + RXrptr);
2328 wptr = readw(ofsAddr + RXwptr);
2329 mask = readw(ofsAddr + RX_mask);
2330 len = (wptr - rptr) & mask;
2335 void MoxaPortTxDisable(int port)
2337 void __iomem *ofsAddr;
2339 ofsAddr = moxaTableAddr[port];
2340 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2343 void MoxaPortTxEnable(int port)
2345 void __iomem *ofsAddr;
2347 ofsAddr = moxaTableAddr[port];
2348 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2352 int MoxaPortResetBrkCnt(int port)
2355 cnt = moxaBreakCnt[port];
2356 moxaBreakCnt[port] = 0;
2361 void MoxaPortSendBreak(int port, int ms100)
2363 void __iomem *ofsAddr;
2365 ofsAddr = moxaTableAddr[port];
2367 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2368 moxadelay(ms100 * (HZ / 10));
2370 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2371 moxadelay(HZ / 4); /* 250 ms */
2373 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2376 static int moxa_get_serial_info(struct moxa_str *info,
2377 struct serial_struct __user *retinfo)
2379 struct serial_struct tmp;
2381 memset(&tmp, 0, sizeof(tmp));
2382 tmp.type = info->type;
2383 tmp.line = info->port;
2386 tmp.flags = info->asyncflags;
2387 tmp.baud_base = 921600;
2388 tmp.close_delay = info->close_delay;
2389 tmp.closing_wait = info->closing_wait;
2390 tmp.custom_divisor = 0;
2392 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2398 static int moxa_set_serial_info(struct moxa_str *info,
2399 struct serial_struct __user *new_info)
2401 struct serial_struct new_serial;
2403 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2406 if ((new_serial.irq != 0) ||
2407 (new_serial.port != 0) ||
2408 // (new_serial.type != info->type) ||
2409 (new_serial.custom_divisor != 0) ||
2410 (new_serial.baud_base != 921600))
2413 if (!capable(CAP_SYS_ADMIN)) {
2414 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2415 (info->asyncflags & ~ASYNC_USR_MASK)))
2418 info->close_delay = new_serial.close_delay * HZ / 100;
2419 info->closing_wait = new_serial.closing_wait * HZ / 100;
2422 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2423 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2425 if (new_serial.type == PORT_16550A) {
2426 MoxaSetFifo(info->port, 1);
2428 MoxaSetFifo(info->port, 0);
2431 info->type = new_serial.type;
2437 /*****************************************************************************
2438 * Static local functions: *
2439 *****************************************************************************/
2441 * moxadelay - delays a specified number ticks
2443 static void moxadelay(int tick)
2445 unsigned long st, et;
2449 while (time_before(jiffies, et));
2452 static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
2455 writew(arg, ofsAddr + FuncArg);
2456 writew(cmd, ofsAddr + FuncCode);
2457 wait_finish(ofsAddr);
2460 static void wait_finish(void __iomem *ofsAddr)
2465 while (readw(ofsAddr + FuncCode) != 0) {
2467 if ((j - i) > moxaFuncTout) {
2473 static void low_water_check(void __iomem *ofsAddr)
2476 ushort rptr, wptr, mask;
2478 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2479 rptr = readw(ofsAddr + RXrptr);
2480 wptr = readw(ofsAddr + RXwptr);
2481 mask = readw(ofsAddr + RX_mask);
2482 len = (wptr - rptr) & mask;
2483 if (len <= Low_water)
2484 moxafunc(ofsAddr, FC_SendXon, 0);
2488 static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2490 void __iomem *baseAddr;
2493 if(copy_from_user(moxaBuff, tmp, len))
2495 baseAddr = moxaBaseAddr[cardno];
2496 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2497 moxadelay(1); /* delay 10 ms */
2498 for (i = 0; i < 4096; i++)
2499 writeb(0, baseAddr + i); /* clear fix page */
2500 for (i = 0; i < len; i++)
2501 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2502 writeb(0, baseAddr + Control_reg); /* restart */
2506 static int moxafindcard(int cardno)
2508 void __iomem *baseAddr;
2511 baseAddr = moxaBaseAddr[cardno];
2512 switch (moxa_boards[cardno].boardType) {
2513 case MOXA_BOARD_C218_ISA:
2514 case MOXA_BOARD_C218_PCI:
2515 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2519 case MOXA_BOARD_CP204J:
2520 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2525 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2528 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2535 static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2537 void __iomem *baseAddr;
2540 if(len > sizeof(moxaBuff))
2542 if(copy_from_user(moxaBuff, tmp, len))
2544 baseAddr = moxaBaseAddr[cardno];
2545 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2546 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2547 for (i = 0; i < 7168; i++)
2548 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2549 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2550 for (i = 0; i < (len - 7168); i++)
2551 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2555 static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2557 void __iomem *baseAddr, *ofsAddr;
2558 int retval, port, i;
2560 if(copy_from_user(moxaBuff, tmp, len))
2562 baseAddr = moxaBaseAddr[cardno];
2563 switch (moxa_boards[cardno].boardType) {
2564 case MOXA_BOARD_C218_ISA:
2565 case MOXA_BOARD_C218_PCI:
2566 case MOXA_BOARD_CP204J:
2567 retval = moxaloadc218(cardno, baseAddr, len);
2570 port = cardno * MAX_PORTS_PER_BOARD;
2571 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2572 moxaChkPort[port] = 1;
2573 moxaCurBaud[port] = 9600L;
2574 moxaDCDState[port] = 0;
2575 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2576 ofsAddr = moxaTableAddr[port];
2577 writew(C218rx_mask, ofsAddr + RX_mask);
2578 writew(C218tx_mask, ofsAddr + TX_mask);
2579 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2580 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2582 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2583 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2588 retval = moxaloadc320(cardno, baseAddr, len,
2589 &moxa_boards[cardno].numPorts);
2592 port = cardno * MAX_PORTS_PER_BOARD;
2593 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2594 moxaChkPort[port] = 1;
2595 moxaCurBaud[port] = 9600L;
2596 moxaDCDState[port] = 0;
2597 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2598 ofsAddr = moxaTableAddr[port];
2599 if (moxa_boards[cardno].numPorts == 8) {
2600 writew(C320p8rx_mask, ofsAddr + RX_mask);
2601 writew(C320p8tx_mask, ofsAddr + TX_mask);
2602 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2603 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2604 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2605 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2607 } else if (moxa_boards[cardno].numPorts == 16) {
2608 writew(C320p16rx_mask, ofsAddr + RX_mask);
2609 writew(C320p16tx_mask, ofsAddr + TX_mask);
2610 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2611 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2612 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2613 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2615 } else if (moxa_boards[cardno].numPorts == 24) {
2616 writew(C320p24rx_mask, ofsAddr + RX_mask);
2617 writew(C320p24tx_mask, ofsAddr + TX_mask);
2618 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2619 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2620 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2621 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2622 } else if (moxa_boards[cardno].numPorts == 32) {
2623 writew(C320p32rx_mask, ofsAddr + RX_mask);
2624 writew(C320p32tx_mask, ofsAddr + TX_mask);
2625 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2626 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2627 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2628 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2629 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2634 loadstat[cardno] = 1;
2638 static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
2641 int i, j, len1, len2;
2642 ushort usum, *ptr, keycode;
2644 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2645 keycode = CP204J_KeyCode;
2647 keycode = C218_KeyCode;
2650 ptr = (ushort *) moxaBuff;
2651 for (i = 0; i < len1; i++)
2652 usum += le16_to_cpu(*(ptr + i));
2658 len2 = (len1 > 2048) ? 2048 : len1;
2660 for (i = 0; i < len2 << 1; i++)
2661 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2664 writew(len2, baseAddr + C218DLoad_len);
2665 writew(0, baseAddr + C218_key);
2666 for (i = 0; i < 100; i++) {
2667 if (readw(baseAddr + C218_key) == keycode)
2669 moxadelay(1); /* delay 10 ms */
2671 if (readw(baseAddr + C218_key) != keycode) {
2675 writew(0, baseAddr + C218DLoad_len);
2676 writew(usum, baseAddr + C218check_sum);
2677 writew(0, baseAddr + C218_key);
2678 for (i = 0; i < 100; i++) {
2679 if (readw(baseAddr + C218_key) == keycode)
2681 moxadelay(1); /* delay 10 ms */
2684 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2685 if (readb(baseAddr + C218chksum_ok) != 1) {
2688 writew(0, baseAddr + C218_key);
2689 for (i = 0; i < 100; i++) {
2690 if (readw(baseAddr + Magic_no) == Magic_code)
2692 moxadelay(1); /* delay 10 ms */
2694 if (readw(baseAddr + Magic_no) != Magic_code) {
2697 writew(1, baseAddr + Disable_IRQ);
2698 writew(0, baseAddr + Magic_no);
2699 for (i = 0; i < 100; i++) {
2700 if (readw(baseAddr + Magic_no) == Magic_code)
2702 moxadelay(1); /* delay 10 ms */
2704 if (readw(baseAddr + Magic_no) != Magic_code) {
2708 moxaIntNdx[cardno] = baseAddr + IRQindex;
2709 moxaIntPend[cardno] = baseAddr + IRQpending;
2710 moxaIntTable[cardno] = baseAddr + IRQtable;
2714 static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
2717 int i, j, wlen, len2, retry;
2722 uptr = (ushort *) moxaBuff;
2723 for (i = 0; i < wlen; i++)
2724 usum += le16_to_cpu(uptr[i]);
2735 for (i = 0; i < len2; i++)
2736 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
2739 writew(len2, baseAddr + C320DLoad_len);
2740 writew(0, baseAddr + C320_key);
2741 for (i = 0; i < 10; i++) {
2742 if (readw(baseAddr + C320_key) == C320_KeyCode)
2746 if (readw(baseAddr + C320_key) != C320_KeyCode)
2749 writew(0, baseAddr + C320DLoad_len);
2750 writew(usum, baseAddr + C320check_sum);
2751 writew(0, baseAddr + C320_key);
2752 for (i = 0; i < 10; i++) {
2753 if (readw(baseAddr + C320_key) == C320_KeyCode)
2758 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
2759 if (readb(baseAddr + C320chksum_ok) != 1)
2761 writew(0, baseAddr + C320_key);
2762 for (i = 0; i < 600; i++) {
2763 if (readw(baseAddr + Magic_no) == Magic_code)
2767 if (readw(baseAddr + Magic_no) != Magic_code)
2770 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
2771 writew(0x3800, baseAddr + TMS320_PORT1);
2772 writew(0x3900, baseAddr + TMS320_PORT2);
2773 writew(28499, baseAddr + TMS320_CLOCK);
2775 writew(0x3200, baseAddr + TMS320_PORT1);
2776 writew(0x3400, baseAddr + TMS320_PORT2);
2777 writew(19999, baseAddr + TMS320_CLOCK);
2779 writew(1, baseAddr + Disable_IRQ);
2780 writew(0, baseAddr + Magic_no);
2781 for (i = 0; i < 500; i++) {
2782 if (readw(baseAddr + Magic_no) == Magic_code)
2786 if (readw(baseAddr + Magic_no) != Magic_code)
2789 j = readw(baseAddr + Module_cnt);
2793 writew(j, baseAddr + Module_no);
2794 writew(0, baseAddr + Magic_no);
2795 for (i = 0; i < 600; i++) {
2796 if (readw(baseAddr + Magic_no) == Magic_code)
2800 if (readw(baseAddr + Magic_no) != Magic_code)
2803 moxaIntNdx[cardno] = baseAddr + IRQindex;
2804 moxaIntPend[cardno] = baseAddr + IRQpending;
2805 moxaIntTable[cardno] = baseAddr + IRQtable;
2809 static void MoxaSetFifo(int port, int enable)
2811 void __iomem *ofsAddr = moxaTableAddr[port];
2814 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
2815 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
2817 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
2818 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);