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 put_to_user(arg1, arg2) put_user(arg1, (unsigned long *)arg2)
55 #define get_from_user(arg1, arg2) get_user(arg1, (unsigned int *)arg2)
57 #define MAX_BOARDS 4 /* Don't change this value */
58 #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
59 #define MAX_PORTS 128 /* Don't change this value */
62 * Define the Moxa PCI vendor and device IDs.
64 #define MOXA_BUS_TYPE_ISA 0
65 #define MOXA_BUS_TYPE_PCI 1
67 #ifndef PCI_VENDOR_ID_MOXA
68 #define PCI_VENDOR_ID_MOXA 0x1393
70 #ifndef PCI_DEVICE_ID_CP204J
71 #define PCI_DEVICE_ID_CP204J 0x2040
73 #ifndef PCI_DEVICE_ID_C218
74 #define PCI_DEVICE_ID_C218 0x2180
76 #ifndef PCI_DEVICE_ID_C320
77 #define PCI_DEVICE_ID_C320 0x3200
81 MOXA_BOARD_C218_PCI = 1,
88 static char *moxa_brdname[] =
90 "C218 Turbo PCI series",
91 "C218 Turbo ISA series",
92 "C320 Turbo PCI series",
93 "C320 Turbo ISA series",
98 static struct pci_device_id moxa_pcibrds[] = {
99 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C218, PCI_ANY_ID, PCI_ANY_ID,
100 0, 0, MOXA_BOARD_C218_PCI },
101 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C320, PCI_ANY_ID, PCI_ANY_ID,
102 0, 0, MOXA_BOARD_C320_PCI },
103 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_CP204J, PCI_ANY_ID, PCI_ANY_ID,
104 0, 0, MOXA_BOARD_CP204J },
107 MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
108 #endif /* CONFIG_PCI */
110 typedef struct _moxa_isa_board_conf {
113 unsigned long baseAddr;
114 } moxa_isa_board_conf;
116 static moxa_isa_board_conf moxa_isa_boards[] =
118 /* {MOXA_BOARD_C218_ISA,8,0xDC000}, */
121 typedef struct _moxa_pci_devinfo {
124 struct pci_dev *pdev;
127 typedef struct _moxa_board_conf {
130 unsigned long baseAddr;
132 moxa_pci_devinfo pciInfo;
135 static moxa_board_conf moxa_boards[MAX_BOARDS];
136 static void __iomem *moxaBaseAddr[MAX_BOARDS];
137 static int loadstat[MAX_BOARDS];
143 unsigned short closing_wait;
146 long event; /* long req'd for set_bit --RR */
148 unsigned long statusflags;
149 struct tty_struct *tty;
151 wait_queue_head_t open_wait;
152 wait_queue_head_t close_wait;
155 struct mxser_mstatus {
163 static struct mxser_mstatus GMStatus[MAX_PORTS];
166 #define TXSTOPPED 0x1
168 #define EMPTYWAIT 0x4
171 #define SERIAL_DO_RESTART
174 #define SERIAL_TYPE_NORMAL 1
176 #define WAKEUP_CHARS 256
178 #define PORTNO(x) ((x)->index)
180 static int verbose = 0;
181 static int ttymajor = MOXAMAJOR;
182 /* Variables for insmod */
184 static int baseaddr[4];
186 static int numports[4];
189 MODULE_AUTHOR("William Chen");
190 MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
191 MODULE_LICENSE("GPL");
193 module_param_array(type, int, NULL, 0);
194 module_param_array(baseaddr, int, NULL, 0);
195 module_param_array(numports, int, NULL, 0);
197 module_param(ttymajor, int, 0);
198 module_param(verbose, bool, 0644);
203 static int moxa_open(struct tty_struct *, struct file *);
204 static void moxa_close(struct tty_struct *, struct file *);
205 static int moxa_write(struct tty_struct *, const unsigned char *, int);
206 static int moxa_write_room(struct tty_struct *);
207 static void moxa_flush_buffer(struct tty_struct *);
208 static int moxa_chars_in_buffer(struct tty_struct *);
209 static void moxa_flush_chars(struct tty_struct *);
210 static void moxa_put_char(struct tty_struct *, unsigned char);
211 static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
212 static void moxa_throttle(struct tty_struct *);
213 static void moxa_unthrottle(struct tty_struct *);
214 static void moxa_set_termios(struct tty_struct *, struct ktermios *);
215 static void moxa_stop(struct tty_struct *);
216 static void moxa_start(struct tty_struct *);
217 static void moxa_hangup(struct tty_struct *);
218 static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
219 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
220 unsigned int set, unsigned int clear);
221 static void moxa_poll(unsigned long);
222 static void set_tty_param(struct tty_struct *);
223 static int block_till_ready(struct tty_struct *, struct file *,
225 static void setup_empty_event(struct tty_struct *);
226 static void check_xmit_empty(unsigned long);
227 static void shut_down(struct moxa_str *);
228 static void receive_data(struct moxa_str *);
230 * moxa board interface functions:
232 static void MoxaDriverInit(void);
233 static int MoxaDriverIoctl(unsigned int, unsigned long, int);
234 static int MoxaDriverPoll(void);
235 static int MoxaPortsOfCard(int);
236 static int MoxaPortIsValid(int);
237 static void MoxaPortEnable(int);
238 static void MoxaPortDisable(int);
239 static long MoxaPortGetMaxBaud(int);
240 static long MoxaPortSetBaud(int, long);
241 static int MoxaPortSetTermio(int, struct ktermios *, speed_t);
242 static int MoxaPortGetLineOut(int, int *, int *);
243 static void MoxaPortLineCtrl(int, int, int);
244 static void MoxaPortFlowCtrl(int, int, int, int, int, int);
245 static int MoxaPortLineStatus(int);
246 static int MoxaPortDCDChange(int);
247 static int MoxaPortDCDON(int);
248 static void MoxaPortFlushData(int, int);
249 static int MoxaPortWriteData(int, unsigned char *, int);
250 static int MoxaPortReadData(int, struct tty_struct *tty);
251 static int MoxaPortTxQueue(int);
252 static int MoxaPortRxQueue(int);
253 static int MoxaPortTxFree(int);
254 static void MoxaPortTxDisable(int);
255 static void MoxaPortTxEnable(int);
256 static int MoxaPortResetBrkCnt(int);
257 static void MoxaPortSendBreak(int, int);
258 static int moxa_get_serial_info(struct moxa_str *, struct serial_struct __user *);
259 static int moxa_set_serial_info(struct moxa_str *, struct serial_struct __user *);
260 static void MoxaSetFifo(int port, int enable);
262 static const struct tty_operations moxa_ops = {
266 .write_room = moxa_write_room,
267 .flush_buffer = moxa_flush_buffer,
268 .chars_in_buffer = moxa_chars_in_buffer,
269 .flush_chars = moxa_flush_chars,
270 .put_char = moxa_put_char,
272 .throttle = moxa_throttle,
273 .unthrottle = moxa_unthrottle,
274 .set_termios = moxa_set_termios,
277 .hangup = moxa_hangup,
278 .tiocmget = moxa_tiocmget,
279 .tiocmset = moxa_tiocmset,
282 static struct tty_driver *moxaDriver;
283 static struct moxa_str moxaChannels[MAX_PORTS];
284 static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0);
285 static struct timer_list moxaEmptyTimer[MAX_PORTS];
286 static DEFINE_SPINLOCK(moxa_lock);
289 static int moxa_get_PCI_conf(struct pci_dev *p, int board_type, moxa_board_conf * board)
291 board->baseAddr = pci_resource_start (p, 2);
292 board->boardType = board_type;
293 switch (board_type) {
294 case MOXA_BOARD_C218_ISA:
295 case MOXA_BOARD_C218_PCI:
299 case MOXA_BOARD_CP204J:
306 board->busType = MOXA_BUS_TYPE_PCI;
307 board->pciInfo.busNum = p->bus->number;
308 board->pciInfo.devNum = p->devfn >> 3;
309 board->pciInfo.pdev = p;
310 /* don't lose the reference in the next pci_get_device iteration */
315 #endif /* CONFIG_PCI */
317 static int __init moxa_init(void)
322 printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION);
323 moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
327 moxaDriver->owner = THIS_MODULE;
328 moxaDriver->name = "ttyMX";
329 moxaDriver->major = ttymajor;
330 moxaDriver->minor_start = 0;
331 moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
332 moxaDriver->subtype = SERIAL_TYPE_NORMAL;
333 moxaDriver->init_termios = tty_std_termios;
334 moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
335 moxaDriver->init_termios.c_ispeed = 9600;
336 moxaDriver->init_termios.c_ospeed = 9600;
337 moxaDriver->flags = TTY_DRIVER_REAL_RAW;
338 tty_set_operations(moxaDriver, &moxa_ops);
340 for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) {
341 ch->type = PORT_16550A;
343 ch->close_delay = 5 * HZ / 10;
344 ch->closing_wait = 30 * HZ;
345 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
346 init_waitqueue_head(&ch->open_wait);
347 init_waitqueue_head(&ch->close_wait);
350 printk("Tty devices major number = %d\n", ttymajor);
352 if (tty_register_driver(moxaDriver)) {
353 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
354 put_tty_driver(moxaDriver);
357 for (i = 0; i < MAX_PORTS; i++)
358 setup_timer(&moxaEmptyTimer[i], check_xmit_empty,
359 (unsigned long)&moxaChannels[i]);
361 mod_timer(&moxaTimer, jiffies + HZ / 50);
363 /* Find the boards defined in source code */
365 for (i = 0; i < MAX_BOARDS; i++) {
366 if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) ||
367 (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) {
368 moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType;
369 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
370 moxa_boards[numBoards].numPorts = 8;
372 moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts;
373 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
374 moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr;
376 printk("Board %2d: %s board(baseAddr=%lx)\n",
378 moxa_brdname[moxa_boards[numBoards].boardType - 1],
379 moxa_boards[numBoards].baseAddr);
383 /* Find the boards defined form module args. */
385 for (i = 0; i < MAX_BOARDS; i++) {
386 if ((type[i] == MOXA_BOARD_C218_ISA) ||
387 (type[i] == MOXA_BOARD_C320_ISA)) {
389 printk("Board %2d: %s board(baseAddr=%lx)\n",
391 moxa_brdname[type[i] - 1],
392 (unsigned long) baseaddr[i]);
393 if (numBoards >= MAX_BOARDS) {
395 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
398 moxa_boards[numBoards].boardType = type[i];
399 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
400 moxa_boards[numBoards].numPorts = 8;
402 moxa_boards[numBoards].numPorts = numports[i];
403 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
404 moxa_boards[numBoards].baseAddr = baseaddr[i];
409 /* Find PCI boards here */
412 struct pci_dev *p = NULL;
413 int n = ARRAY_SIZE(moxa_pcibrds) - 1;
416 while ((p = pci_get_device(moxa_pcibrds[i].vendor, moxa_pcibrds[i].device, p))!=NULL)
418 if (pci_enable_device(p))
420 if (numBoards >= MAX_BOARDS) {
422 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
424 moxa_get_PCI_conf(p, moxa_pcibrds[i].driver_data,
425 &moxa_boards[numBoards]);
433 for (i = 0; i < numBoards; i++) {
434 moxaBaseAddr[i] = ioremap((unsigned long) moxa_boards[i].baseAddr, 0x4000);
440 static void __exit moxa_exit(void)
445 printk("Unloading module moxa ...\n");
447 del_timer(&moxaTimer);
449 for (i = 0; i < MAX_PORTS; i++)
450 del_timer(&moxaEmptyTimer[i]);
452 if (tty_unregister_driver(moxaDriver))
453 printk("Couldn't unregister MOXA Intellio family serial driver\n");
454 put_tty_driver(moxaDriver);
456 for (i = 0; i < MAX_BOARDS; i++) {
458 iounmap(moxaBaseAddr[i]);
459 if (moxa_boards[i].busType == MOXA_BUS_TYPE_PCI)
460 pci_dev_put(moxa_boards[i].pciInfo.pdev);
467 module_init(moxa_init);
468 module_exit(moxa_exit);
470 static int moxa_open(struct tty_struct *tty, struct file *filp)
477 if (port == MAX_PORTS) {
480 if (!MoxaPortIsValid(port)) {
481 tty->driver_data = NULL;
485 ch = &moxaChannels[port];
487 tty->driver_data = ch;
489 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
492 MoxaPortLineCtrl(ch->port, 1, 1);
493 MoxaPortEnable(ch->port);
494 ch->asyncflags |= ASYNC_INITIALIZED;
496 retval = block_till_ready(tty, filp, ch);
498 moxa_unthrottle(tty);
500 if (ch->type == PORT_16550A) {
501 MoxaSetFifo(ch->port, 1);
503 MoxaSetFifo(ch->port, 0);
509 static void moxa_close(struct tty_struct *tty, struct file *filp)
515 if (port == MAX_PORTS) {
518 if (!MoxaPortIsValid(port)) {
519 #ifdef SERIAL_DEBUG_CLOSE
520 printk("Invalid portno in moxa_close\n");
522 tty->driver_data = NULL;
525 if (tty->driver_data == NULL) {
528 if (tty_hung_up_p(filp)) {
531 ch = (struct moxa_str *) tty->driver_data;
533 if ((tty->count == 1) && (ch->count != 1)) {
534 printk("moxa_close: bad serial port count; tty->count is 1, "
535 "ch->count is %d\n", ch->count);
538 if (--ch->count < 0) {
539 printk("moxa_close: bad serial port count, device=%s\n",
546 ch->asyncflags |= ASYNC_CLOSING;
548 ch->cflag = tty->termios->c_cflag;
549 if (ch->asyncflags & ASYNC_INITIALIZED) {
550 setup_empty_event(tty);
551 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
552 del_timer(&moxaEmptyTimer[ch->port]);
555 MoxaPortFlushData(port, 2);
557 if (tty->driver->flush_buffer)
558 tty->driver->flush_buffer(tty);
559 tty_ldisc_flush(tty);
564 if (ch->blocked_open) {
565 if (ch->close_delay) {
566 msleep_interruptible(jiffies_to_msecs(ch->close_delay));
568 wake_up_interruptible(&ch->open_wait);
570 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
571 wake_up_interruptible(&ch->close_wait);
574 static int moxa_write(struct tty_struct *tty,
575 const unsigned char *buf, int count)
581 ch = (struct moxa_str *) tty->driver_data;
586 spin_lock_irqsave(&moxa_lock, flags);
587 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
588 spin_unlock_irqrestore(&moxa_lock, flags);
590 /*********************************************
591 if ( !(ch->statusflags & LOWWAIT) &&
592 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
593 ************************************************/
594 ch->statusflags |= LOWWAIT;
598 static int moxa_write_room(struct tty_struct *tty)
604 ch = (struct moxa_str *) tty->driver_data;
607 return (MoxaPortTxFree(ch->port));
610 static void moxa_flush_buffer(struct tty_struct *tty)
612 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
616 MoxaPortFlushData(ch->port, 1);
620 static int moxa_chars_in_buffer(struct tty_struct *tty)
623 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
626 * Sigh...I have to check if driver_data is NULL here, because
627 * if an open() fails, the TTY subsystem eventually calls
628 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
629 * routine. And since the open() failed, we return 0 here. TDJ
633 chars = MoxaPortTxQueue(ch->port);
636 * Make it possible to wakeup anything waiting for output
637 * in tty_ioctl.c, etc.
639 if (!(ch->statusflags & EMPTYWAIT))
640 setup_empty_event(tty);
645 static void moxa_flush_chars(struct tty_struct *tty)
648 * Don't think I need this, because this is called to empty the TX
649 * buffer for the 16450, 16550, etc.
653 static void moxa_put_char(struct tty_struct *tty, unsigned char c)
659 ch = (struct moxa_str *) tty->driver_data;
663 spin_lock_irqsave(&moxa_lock, flags);
664 MoxaPortWriteData(port, &c, 1);
665 spin_unlock_irqrestore(&moxa_lock, flags);
666 /************************************************
667 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
668 *************************************************/
669 ch->statusflags |= LOWWAIT;
672 static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
674 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
676 int flag = 0, dtr, rts;
679 if ((port != MAX_PORTS) && (!ch))
682 MoxaPortGetLineOut(ch->port, &dtr, &rts);
687 dtr = MoxaPortLineStatus(ch->port);
697 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
698 unsigned int set, unsigned int clear)
700 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
705 if ((port != MAX_PORTS) && (!ch))
708 MoxaPortGetLineOut(ch->port, &dtr, &rts);
713 if (clear & TIOCM_RTS)
715 if (clear & TIOCM_DTR)
717 MoxaPortLineCtrl(ch->port, dtr, rts);
721 static int moxa_ioctl(struct tty_struct *tty, struct file *file,
722 unsigned int cmd, unsigned long arg)
724 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
726 void __user *argp = (void __user *)arg;
730 if ((port != MAX_PORTS) && (!ch))
734 case TCSBRK: /* SVID version: non-zero arg --> no break */
735 retval = tty_check_change(tty);
738 setup_empty_event(tty);
739 tty_wait_until_sent(tty, 0);
741 MoxaPortSendBreak(ch->port, 0);
743 case TCSBRKP: /* support for POSIX tcsendbreak() */
744 retval = tty_check_change(tty);
747 setup_empty_event(tty);
748 tty_wait_until_sent(tty, 0);
749 MoxaPortSendBreak(ch->port, arg);
752 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
754 if(get_user(retval, (unsigned long __user *) argp))
757 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
760 ch->asyncflags &= ~ASYNC_CHECK_CD;
762 ch->asyncflags |= ASYNC_CHECK_CD;
765 return moxa_get_serial_info(ch, argp);
768 return moxa_set_serial_info(ch, argp);
770 retval = MoxaDriverIoctl(cmd, arg, port);
775 static void moxa_throttle(struct tty_struct *tty)
777 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
779 ch->statusflags |= THROTTLE;
782 static void moxa_unthrottle(struct tty_struct *tty)
784 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
786 ch->statusflags &= ~THROTTLE;
789 static void moxa_set_termios(struct tty_struct *tty,
790 struct ktermios *old_termios)
792 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
797 if (!(old_termios->c_cflag & CLOCAL) &&
798 (tty->termios->c_cflag & CLOCAL))
799 wake_up_interruptible(&ch->open_wait);
802 static void moxa_stop(struct tty_struct *tty)
804 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
808 MoxaPortTxDisable(ch->port);
809 ch->statusflags |= TXSTOPPED;
813 static void moxa_start(struct tty_struct *tty)
815 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
820 if (!(ch->statusflags & TXSTOPPED))
823 MoxaPortTxEnable(ch->port);
824 ch->statusflags &= ~TXSTOPPED;
827 static void moxa_hangup(struct tty_struct *tty)
829 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
831 moxa_flush_buffer(tty);
835 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
837 wake_up_interruptible(&ch->open_wait);
840 static void moxa_poll(unsigned long ignored)
844 struct tty_struct *tp;
847 del_timer(&moxaTimer);
849 if (MoxaDriverPoll() < 0) {
850 mod_timer(&moxaTimer, jiffies + HZ / 50);
853 for (card = 0; card < MAX_BOARDS; card++) {
854 if ((ports = MoxaPortsOfCard(card)) <= 0)
856 ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
857 for (i = 0; i < ports; i++, ch++) {
858 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
860 if (!(ch->statusflags & THROTTLE) &&
861 (MoxaPortRxQueue(ch->port) > 0))
863 if ((tp = ch->tty) == 0)
865 if (ch->statusflags & LOWWAIT) {
866 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
868 ch->statusflags &= ~LOWWAIT;
873 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
874 tty_insert_flip_char(tp, 0, TTY_BREAK);
875 tty_schedule_flip(tp);
877 if (MoxaPortDCDChange(ch->port)) {
878 if (ch->asyncflags & ASYNC_CHECK_CD) {
879 if (MoxaPortDCDON(ch->port))
880 wake_up_interruptible(&ch->open_wait);
883 wake_up_interruptible(&ch->open_wait);
884 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
891 mod_timer(&moxaTimer, jiffies + HZ / 50);
894 /******************************************************************************/
896 static void set_tty_param(struct tty_struct *tty)
898 register struct ktermios *ts;
900 int rts, cts, txflow, rxflow, xany;
902 ch = (struct moxa_str *) tty->driver_data;
904 if (ts->c_cflag & CLOCAL)
905 ch->asyncflags &= ~ASYNC_CHECK_CD;
907 ch->asyncflags |= ASYNC_CHECK_CD;
908 rts = cts = txflow = rxflow = xany = 0;
909 if (ts->c_cflag & CRTSCTS)
911 if (ts->c_iflag & IXON)
913 if (ts->c_iflag & IXOFF)
915 if (ts->c_iflag & IXANY)
917 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
918 MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty));
921 static int block_till_ready(struct tty_struct *tty, struct file *filp,
924 DECLARE_WAITQUEUE(wait,current);
927 int do_clocal = C_CLOCAL(tty);
930 * If the device is in the middle of being closed, then block
931 * until it's done, and then try again.
933 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
934 if (ch->asyncflags & ASYNC_CLOSING)
935 interruptible_sleep_on(&ch->close_wait);
936 #ifdef SERIAL_DO_RESTART
937 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
940 return (-ERESTARTSYS);
946 * If non-blocking mode is set, then make the check up front
949 if (filp->f_flags & O_NONBLOCK) {
950 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
954 * Block waiting for the carrier detect and the line to become free
957 add_wait_queue(&ch->open_wait, &wait);
958 #ifdef SERIAL_DEBUG_OPEN
959 printk("block_til_ready before block: ttys%d, count = %d\n",
960 ch->line, ch->count);
962 spin_lock_irqsave(&moxa_lock, flags);
963 if (!tty_hung_up_p(filp))
966 spin_unlock_irqrestore(&moxa_lock, flags);
969 set_current_state(TASK_INTERRUPTIBLE);
970 if (tty_hung_up_p(filp) ||
971 !(ch->asyncflags & ASYNC_INITIALIZED)) {
972 #ifdef SERIAL_DO_RESTART
973 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
976 retval = -ERESTARTSYS;
982 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
983 MoxaPortDCDON(ch->port)))
986 if (signal_pending(current)) {
987 retval = -ERESTARTSYS;
992 set_current_state(TASK_RUNNING);
993 remove_wait_queue(&ch->open_wait, &wait);
995 spin_lock_irqsave(&moxa_lock, flags);
996 if (!tty_hung_up_p(filp))
999 spin_unlock_irqrestore(&moxa_lock, flags);
1000 #ifdef SERIAL_DEBUG_OPEN
1001 printk("block_til_ready after blocking: ttys%d, count = %d\n",
1002 ch->line, ch->count);
1006 /* FIXME: review to see if we need to use set_bit on these */
1007 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1011 static void setup_empty_event(struct tty_struct *tty)
1013 struct moxa_str *ch = tty->driver_data;
1014 unsigned long flags;
1016 spin_lock_irqsave(&moxa_lock, flags);
1017 ch->statusflags |= EMPTYWAIT;
1018 mod_timer(&moxaEmptyTimer[ch->port], jiffies + HZ);
1019 spin_unlock_irqrestore(&moxa_lock, flags);
1022 static void check_xmit_empty(unsigned long data)
1024 struct moxa_str *ch;
1026 ch = (struct moxa_str *) data;
1027 del_timer(&moxaEmptyTimer[ch->port]);
1028 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1029 if (MoxaPortTxQueue(ch->port) == 0) {
1030 ch->statusflags &= ~EMPTYWAIT;
1031 tty_wakeup(ch->tty);
1034 mod_timer(&moxaEmptyTimer[ch->port], jiffies + HZ);
1036 ch->statusflags &= ~EMPTYWAIT;
1039 static void shut_down(struct moxa_str *ch)
1041 struct tty_struct *tp;
1043 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1048 MoxaPortDisable(ch->port);
1051 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1053 if (tp->termios->c_cflag & HUPCL)
1054 MoxaPortLineCtrl(ch->port, 0, 0);
1056 ch->asyncflags &= ~ASYNC_INITIALIZED;
1059 static void receive_data(struct moxa_str *ch)
1061 struct tty_struct *tp;
1062 struct ktermios *ts;
1063 unsigned long flags;
1069 /**************************************************
1070 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1071 *****************************************************/
1073 MoxaPortFlushData(ch->port, 0);
1076 spin_lock_irqsave(&moxa_lock, flags);
1077 MoxaPortReadData(ch->port, tp);
1078 spin_unlock_irqrestore(&moxa_lock, flags);
1079 tty_schedule_flip(tp);
1082 #define Magic_code 0x404
1085 * System Configuration
1088 * for C218 BIOS initialization
1090 #define C218_ConfBase 0x800
1091 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1092 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1093 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1094 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1095 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1096 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1097 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1098 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1099 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1100 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1102 #define C218_LoadBuf 0x0F00
1103 #define C218_KeyCode 0x218
1104 #define CP204J_KeyCode 0x204
1107 * for C320 BIOS initialization
1109 #define C320_ConfBase 0x800
1110 #define C320_LoadBuf 0x0f00
1111 #define STS_init 0x05 /* for C320_status */
1113 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1114 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1115 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1116 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1117 #define C320check_sum C320_ConfBase + 8 /* WORD */
1118 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1119 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1120 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1122 #define C320_KeyCode 0x320
1124 #define FixPage_addr 0x0000 /* starting addr of static page */
1125 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1126 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1127 #define Control_reg 0x1ff0 /* select page and reset control */
1128 #define HW_reset 0x80
1133 #define FC_CardReset 0x80
1134 #define FC_ChannelReset 1 /* C320 firmware not supported */
1135 #define FC_EnableCH 2
1136 #define FC_DisableCH 3
1137 #define FC_SetParam 4
1138 #define FC_SetMode 5
1139 #define FC_SetRate 6
1140 #define FC_LineControl 7
1141 #define FC_LineStatus 8
1142 #define FC_XmitControl 9
1143 #define FC_FlushQueue 10
1144 #define FC_SendBreak 11
1145 #define FC_StopBreak 12
1146 #define FC_LoopbackON 13
1147 #define FC_LoopbackOFF 14
1148 #define FC_ClrIrqTable 15
1149 #define FC_SendXon 16
1150 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1151 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1152 #define FC_SetBreakIrq 19
1153 #define FC_SetLineIrq 20
1154 #define FC_SetFlowCtl 21
1155 #define FC_GenIrq 22
1156 #define FC_InCD180 23
1157 #define FC_OutCD180 24
1158 #define FC_InUARTreg 23
1159 #define FC_OutUARTreg 24
1160 #define FC_SetXonXoff 25
1161 #define FC_OutCD180CCR 26
1162 #define FC_ExtIQueue 27
1163 #define FC_ExtOQueue 28
1164 #define FC_ClrLineIrq 29
1165 #define FC_HWFlowCtl 30
1166 #define FC_GetClockRate 35
1167 #define FC_SetBaud 36
1168 #define FC_SetDataMode 41
1169 #define FC_GetCCSR 43
1170 #define FC_GetDataError 45
1171 #define FC_RxControl 50
1172 #define FC_ImmSend 51
1173 #define FC_SetXonState 52
1174 #define FC_SetXoffState 53
1175 #define FC_SetRxFIFOTrig 54
1176 #define FC_SetTxFIFOCnt 55
1177 #define FC_UnixRate 56
1178 #define FC_UnixResetTimer 57
1180 #define RxFIFOTrig1 0
1181 #define RxFIFOTrig4 1
1182 #define RxFIFOTrig8 2
1183 #define RxFIFOTrig14 3
1188 #define DRAM_global 0
1189 #define INT_data (DRAM_global + 0)
1190 #define Config_base (DRAM_global + 0x108)
1192 #define IRQindex (INT_data + 0)
1193 #define IRQpending (INT_data + 4)
1194 #define IRQtable (INT_data + 8)
1199 #define IntrRx 0x01 /* receiver data O.K. */
1200 #define IntrTx 0x02 /* transmit buffer empty */
1201 #define IntrFunc 0x04 /* function complete */
1202 #define IntrBreak 0x08 /* received break */
1203 #define IntrLine 0x10 /* line status change
1205 #define IntrIntr 0x20 /* received INTR code */
1206 #define IntrQuit 0x40 /* received QUIT code */
1207 #define IntrEOF 0x80 /* received EOF code */
1209 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1210 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1212 #define Magic_no (Config_base + 0)
1213 #define Card_model_no (Config_base + 2)
1214 #define Total_ports (Config_base + 4)
1215 #define Module_cnt (Config_base + 8)
1216 #define Module_no (Config_base + 10)
1217 #define Timer_10ms (Config_base + 14)
1218 #define Disable_IRQ (Config_base + 20)
1219 #define TMS320_PORT1 (Config_base + 22)
1220 #define TMS320_PORT2 (Config_base + 24)
1221 #define TMS320_CLOCK (Config_base + 26)
1224 * DATA BUFFER in DRAM
1226 #define Extern_table 0x400 /* Base address of the external table
1227 (24 words * 64) total 3K bytes
1228 (24 words * 128) total 6K bytes */
1229 #define Extern_size 0x60 /* 96 bytes */
1230 #define RXrptr 0x00 /* read pointer for RX buffer */
1231 #define RXwptr 0x02 /* write pointer for RX buffer */
1232 #define TXrptr 0x04 /* read pointer for TX buffer */
1233 #define TXwptr 0x06 /* write pointer for TX buffer */
1234 #define HostStat 0x08 /* IRQ flag and general flag */
1235 #define FlagStat 0x0A
1236 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1237 /* x x x x | | | | */
1238 /* | | | + CTS flow */
1239 /* | | +--- RTS flow */
1240 /* | +------ TX Xon/Xoff */
1241 /* +--------- RX Xon/Xoff */
1242 #define Break_cnt 0x0E /* received break count */
1243 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1244 #define RX_mask 0x12
1245 #define TX_mask 0x14
1246 #define Ofs_rxb 0x16
1247 #define Ofs_txb 0x18
1248 #define Page_rxb 0x1A
1249 #define Page_txb 0x1C
1250 #define EndPage_rxb 0x1E
1251 #define EndPage_txb 0x20
1252 #define Data_error 0x22
1253 #define RxTrigger 0x28
1254 #define TxTrigger 0x2a
1256 #define rRXwptr 0x34
1257 #define Low_water 0x36
1259 #define FuncCode 0x40
1260 #define FuncArg 0x42
1261 #define FuncArg1 0x44
1263 #define C218rx_size 0x2000 /* 8K bytes */
1264 #define C218tx_size 0x8000 /* 32K bytes */
1266 #define C218rx_mask (C218rx_size - 1)
1267 #define C218tx_mask (C218tx_size - 1)
1269 #define C320p8rx_size 0x2000
1270 #define C320p8tx_size 0x8000
1271 #define C320p8rx_mask (C320p8rx_size - 1)
1272 #define C320p8tx_mask (C320p8tx_size - 1)
1274 #define C320p16rx_size 0x2000
1275 #define C320p16tx_size 0x4000
1276 #define C320p16rx_mask (C320p16rx_size - 1)
1277 #define C320p16tx_mask (C320p16tx_size - 1)
1279 #define C320p24rx_size 0x2000
1280 #define C320p24tx_size 0x2000
1281 #define C320p24rx_mask (C320p24rx_size - 1)
1282 #define C320p24tx_mask (C320p24tx_size - 1)
1284 #define C320p32rx_size 0x1000
1285 #define C320p32tx_size 0x1000
1286 #define C320p32rx_mask (C320p32rx_size - 1)
1287 #define C320p32tx_mask (C320p32tx_size - 1)
1289 #define Page_size 0x2000
1290 #define Page_mask (Page_size - 1)
1291 #define C218rx_spage 3
1292 #define C218tx_spage 4
1293 #define C218rx_pageno 1
1294 #define C218tx_pageno 4
1295 #define C218buf_pageno 5
1297 #define C320p8rx_spage 3
1298 #define C320p8tx_spage 4
1299 #define C320p8rx_pgno 1
1300 #define C320p8tx_pgno 4
1301 #define C320p8buf_pgno 5
1303 #define C320p16rx_spage 3
1304 #define C320p16tx_spage 4
1305 #define C320p16rx_pgno 1
1306 #define C320p16tx_pgno 2
1307 #define C320p16buf_pgno 3
1309 #define C320p24rx_spage 3
1310 #define C320p24tx_spage 4
1311 #define C320p24rx_pgno 1
1312 #define C320p24tx_pgno 1
1313 #define C320p24buf_pgno 2
1315 #define C320p32rx_spage 3
1316 #define C320p32tx_ofs C320p32rx_size
1317 #define C320p32tx_spage 3
1318 #define C320p32buf_pgno 1
1323 #define WakeupRx 0x01
1324 #define WakeupTx 0x02
1325 #define WakeupBreak 0x08
1326 #define WakeupLine 0x10
1327 #define WakeupIntr 0x20
1328 #define WakeupQuit 0x40
1329 #define WakeupEOF 0x80 /* used in VTIME control */
1330 #define WakeupRxTrigger 0x100
1331 #define WakeupTxTrigger 0x200
1335 #define Rx_over 0x01
1336 #define Xoff_state 0x02
1337 #define Tx_flowOff 0x04
1338 #define Tx_enable 0x08
1339 #define CTS_state 0x10
1340 #define DSR_state 0x20
1341 #define DCD_state 0x80
1345 #define CTS_FlowCtl 1
1346 #define RTS_FlowCtl 2
1347 #define Tx_FlowCtl 4
1348 #define Rx_FlowCtl 8
1349 #define IXM_IXANY 0x10
1351 #define LowWater 128
1359 /* mode definition */
1365 #define MX_STOP1 0x00
1366 #define MX_STOP15 0x04
1367 #define MX_STOP2 0x08
1369 #define MX_PARNONE 0x00
1370 #define MX_PAREVEN 0x40
1371 #define MX_PARODD 0xC0
1376 #define QueryPort MAX_PORTS
1382 int rxcnt[MAX_PORTS];
1383 int txcnt[MAX_PORTS];
1385 typedef struct mon_str mon_st;
1387 #define DCD_changed 0x01
1388 #define DCD_oldstate 0x80
1390 static unsigned char moxaBuff[10240];
1391 static void __iomem *moxaIntNdx[MAX_BOARDS];
1392 static void __iomem *moxaIntPend[MAX_BOARDS];
1393 static void __iomem *moxaIntTable[MAX_BOARDS];
1394 static char moxaChkPort[MAX_PORTS];
1395 static char moxaLineCtrl[MAX_PORTS];
1396 static void __iomem *moxaTableAddr[MAX_PORTS];
1397 static long moxaCurBaud[MAX_PORTS];
1398 static char moxaDCDState[MAX_PORTS];
1399 static char moxaLowChkFlag[MAX_PORTS];
1400 static int moxaLowWaterChk;
1401 static int moxaCard;
1402 static mon_st moxaLog;
1403 static int moxaFuncTout = HZ / 2;
1404 static ushort moxaBreakCnt[MAX_PORTS];
1406 static void moxadelay(int);
1407 static void moxafunc(void __iomem *, int, ushort);
1408 static void wait_finish(void __iomem *);
1409 static void low_water_check(void __iomem *);
1410 static int moxaloadbios(int, unsigned char __user *, int);
1411 static int moxafindcard(int);
1412 static int moxaload320b(int, unsigned char __user *, int);
1413 static int moxaloadcode(int, unsigned char __user *, int);
1414 static int moxaloadc218(int, void __iomem *, int);
1415 static int moxaloadc320(int, void __iomem *, int, int *);
1417 /*****************************************************************************
1418 * Driver level functions: *
1419 * 1. MoxaDriverInit(void); *
1420 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1421 * 3. MoxaDriverPoll(void); *
1422 *****************************************************************************/
1423 void MoxaDriverInit(void)
1427 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1430 moxaLowWaterChk = 0;
1431 for (i = 0; i < MAX_PORTS; i++) {
1433 moxaLowChkFlag[i] = 0;
1434 moxaLineCtrl[i] = 0;
1435 moxaLog.rxcnt[i] = 0;
1436 moxaLog.txcnt[i] = 0;
1441 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1442 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1443 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1444 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1445 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1446 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1447 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1448 #define MOXA_GETDATACOUNT (MOXA + 23)
1449 #define MOXA_GET_IOQUEUE (MOXA + 27)
1450 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1451 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1452 #define MOXA_GET_MAJOR (MOXA + 63)
1453 #define MOXA_GET_CUMAJOR (MOXA + 64)
1454 #define MOXA_GETMSTATUS (MOXA + 65)
1468 static struct moxaq_str temp_queue[MAX_PORTS];
1469 static struct dl_str dltmp;
1471 void MoxaPortFlushData(int port, int mode)
1473 void __iomem *ofsAddr;
1474 if ((mode < 0) || (mode > 2))
1476 ofsAddr = moxaTableAddr[port];
1477 moxafunc(ofsAddr, FC_FlushQueue, mode);
1479 moxaLowChkFlag[port] = 0;
1480 low_water_check(ofsAddr);
1484 int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1488 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1489 void __user *argp = (void __user *)arg;
1491 if (port == QueryPort) {
1492 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1493 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1494 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1495 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1496 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1501 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS * sizeof(moxa_board_conf)))
1504 case MOXA_INIT_DRIVER:
1505 if ((int) arg == 0x404)
1508 case MOXA_GETDATACOUNT:
1509 moxaLog.tick = jiffies;
1510 if(copy_to_user(argp, &moxaLog, sizeof(mon_st)))
1513 case MOXA_FLUSH_QUEUE:
1514 MoxaPortFlushData(port, arg);
1516 case MOXA_GET_IOQUEUE:
1517 for (i = 0; i < MAX_PORTS; i++) {
1518 if (moxaChkPort[i]) {
1519 temp_queue[i].inq = MoxaPortRxQueue(i);
1520 temp_queue[i].outq = MoxaPortTxQueue(i);
1523 if(copy_to_user(argp, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
1526 case MOXA_GET_OQUEUE:
1527 i = MoxaPortTxQueue(port);
1528 return put_user(i, (unsigned long __user *)argp);
1529 case MOXA_GET_IQUEUE:
1530 i = MoxaPortRxQueue(port);
1531 return put_user(i, (unsigned long __user *)argp);
1532 case MOXA_GET_MAJOR:
1533 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1536 case MOXA_GET_CUMAJOR:
1538 if(copy_to_user(argp, &i, sizeof(int)))
1541 case MOXA_GETMSTATUS:
1542 for (i = 0; i < MAX_PORTS; i++) {
1544 GMStatus[i].dcd = 0;
1545 GMStatus[i].dsr = 0;
1546 GMStatus[i].cts = 0;
1547 if (!moxaChkPort[i]) {
1550 status = MoxaPortLineStatus(moxaChannels[i].port);
1552 GMStatus[i].cts = 1;
1554 GMStatus[i].dsr = 1;
1556 GMStatus[i].dcd = 1;
1559 if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
1560 GMStatus[i].cflag = moxaChannels[i].cflag;
1562 GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
1564 if(copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
1568 return (-ENOIOCTLCMD);
1569 case MOXA_LOAD_BIOS:
1570 case MOXA_FIND_BOARD:
1571 case MOXA_LOAD_C320B:
1572 case MOXA_LOAD_CODE:
1573 if (!capable(CAP_SYS_RAWIO))
1578 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1580 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
1585 case MOXA_LOAD_BIOS:
1586 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1588 case MOXA_FIND_BOARD:
1589 return moxafindcard(dltmp.cardno);
1590 case MOXA_LOAD_C320B:
1591 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1592 default: /* to keep gcc happy */
1594 case MOXA_LOAD_CODE:
1595 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1603 int MoxaDriverPoll(void)
1605 register ushort temp;
1607 void __iomem *ofsAddr;
1613 for (card = 0; card < MAX_BOARDS; card++) {
1614 if (loadstat[card] == 0)
1616 if ((ports = moxa_boards[card].numPorts) == 0)
1618 if (readb(moxaIntPend[card]) == 0xff) {
1619 ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
1620 p = card * MAX_PORTS_PER_BOARD;
1622 for (port = 0; port < ports; port += 2, p++) {
1623 if ((temp = readw(ip + port)) != 0) {
1624 writew(0, ip + port);
1625 ofsAddr = moxaTableAddr[p];
1627 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1628 if (temp & IntrBreak) {
1631 if (temp & IntrLine) {
1632 if (readb(ofsAddr + FlagStat) & DCD_state) {
1633 if ((moxaDCDState[p] & DCD_oldstate) == 0)
1634 moxaDCDState[p] = (DCD_oldstate |
1637 if (moxaDCDState[p] & DCD_oldstate)
1638 moxaDCDState[p] = DCD_changed;
1643 writeb(0, moxaIntPend[card]);
1645 if (moxaLowWaterChk) {
1646 p = card * MAX_PORTS_PER_BOARD;
1647 for (port = 0; port < ports; port++, p++) {
1648 if (moxaLowChkFlag[p]) {
1649 moxaLowChkFlag[p] = 0;
1650 ofsAddr = moxaTableAddr[p];
1651 low_water_check(ofsAddr);
1656 moxaLowWaterChk = 0;
1660 /*****************************************************************************
1661 * Card level function: *
1662 * 1. MoxaPortsOfCard(int cardno); *
1663 *****************************************************************************/
1664 int MoxaPortsOfCard(int cardno)
1667 if (moxa_boards[cardno].boardType == 0)
1669 return (moxa_boards[cardno].numPorts);
1672 /*****************************************************************************
1673 * Port level functions: *
1674 * 1. MoxaPortIsValid(int port); *
1675 * 2. MoxaPortEnable(int port); *
1676 * 3. MoxaPortDisable(int port); *
1677 * 4. MoxaPortGetMaxBaud(int port); *
1678 * 6. MoxaPortSetBaud(int port, long baud); *
1679 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1680 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1681 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1682 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1683 * 12. MoxaPortLineStatus(int port); *
1684 * 13. MoxaPortDCDChange(int port); *
1685 * 14. MoxaPortDCDON(int port); *
1686 * 15. MoxaPortFlushData(int port, int mode); *
1687 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1688 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1689 * 20. MoxaPortTxQueue(int port); *
1690 * 21. MoxaPortTxFree(int port); *
1691 * 22. MoxaPortRxQueue(int port); *
1692 * 24. MoxaPortTxDisable(int port); *
1693 * 25. MoxaPortTxEnable(int port); *
1694 * 27. MoxaPortResetBrkCnt(int port); *
1695 * 30. MoxaPortSendBreak(int port, int ticks); *
1696 *****************************************************************************/
1698 * Moxa Port Number Description:
1700 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1701 * the port number using in MOXA driver functions will be 0 to 31 for
1702 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1703 * to 127 for fourth. For example, if you setup three MOXA boards,
1704 * first board is C218, second board is C320-16 and third board is
1705 * C320-32. The port number of first board (C218 - 8 ports) is from
1706 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1707 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1708 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1709 * 127 will be invalid.
1712 * Moxa Functions Description:
1714 * Function 1: Driver initialization routine, this routine must be
1715 * called when initialized driver.
1717 * void MoxaDriverInit();
1720 * Function 2: Moxa driver private IOCTL command processing.
1722 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1724 * unsigned int cmd : IOCTL command
1725 * unsigned long arg : IOCTL argument
1726 * int port : port number (0 - 127)
1733 * Function 3: Moxa driver polling process routine.
1735 * int MoxaDriverPoll(void);
1737 * return: 0 ; polling O.K.
1738 * -1 : no any Moxa card.
1741 * Function 4: Get the ports of this card.
1743 * int MoxaPortsOfCard(int cardno);
1745 * int cardno : card number (0 - 3)
1747 * return: 0 : this card is invalid
1751 * Function 5: Check this port is valid or invalid
1753 * int MoxaPortIsValid(int port);
1754 * int port : port number (0 - 127, ref port description)
1756 * return: 0 : this port is invalid
1757 * 1 : this port is valid
1760 * Function 6: Enable this port to start Tx/Rx data.
1762 * void MoxaPortEnable(int port);
1763 * int port : port number (0 - 127)
1766 * Function 7: Disable this port
1768 * void MoxaPortDisable(int port);
1769 * int port : port number (0 - 127)
1772 * Function 8: Get the maximun available baud rate of this port.
1774 * long MoxaPortGetMaxBaud(int port);
1775 * int port : port number (0 - 127)
1777 * return: 0 : this port is invalid
1778 * 38400/57600/115200 bps
1781 * Function 10: Setting baud rate of this port.
1783 * long MoxaPortSetBaud(int port, long baud);
1784 * int port : port number (0 - 127)
1785 * long baud : baud rate (50 - 115200)
1787 * return: 0 : this port is invalid or baud < 50
1788 * 50 - 115200 : the real baud rate set to the port, if
1789 * the argument baud is large than maximun
1790 * available baud rate, the real setting
1791 * baud rate will be the maximun baud rate.
1794 * Function 12: Configure the port.
1796 * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud);
1797 * int port : port number (0 - 127)
1798 * struct ktermios * termio : termio structure pointer
1799 * speed_t baud : baud rate
1801 * return: -1 : this port is invalid or termio == NULL
1805 * Function 13: Get the DTR/RTS state of this port.
1807 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1808 * int port : port number (0 - 127)
1809 * int * dtrState : pointer to INT to receive the current DTR
1810 * state. (if NULL, this function will not
1811 * write to this address)
1812 * int * rtsState : pointer to INT to receive the current RTS
1813 * state. (if NULL, this function will not
1814 * write to this address)
1816 * return: -1 : this port is invalid
1820 * Function 14: Setting the DTR/RTS output state of this port.
1822 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1823 * int port : port number (0 - 127)
1824 * int dtrState : DTR output state (0: off, 1: on)
1825 * int rtsState : RTS output state (0: off, 1: on)
1828 * Function 15: Setting the flow control of this port.
1830 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1831 * int txFlow,int xany);
1832 * int port : port number (0 - 127)
1833 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1834 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1835 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1836 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1837 * int xany : S/W XANY flow control (0: no, 1: yes)
1840 * Function 16: Get ths line status of this port
1842 * int MoxaPortLineStatus(int port);
1843 * int port : port number (0 - 127)
1845 * return: Bit 0 - CTS state (0: off, 1: on)
1846 * Bit 1 - DSR state (0: off, 1: on)
1847 * Bit 2 - DCD state (0: off, 1: on)
1850 * Function 17: Check the DCD state has changed since the last read
1853 * int MoxaPortDCDChange(int port);
1854 * int port : port number (0 - 127)
1856 * return: 0 : no changed
1857 * 1 : DCD has changed
1860 * Function 18: Check ths current DCD state is ON or not.
1862 * int MoxaPortDCDON(int port);
1863 * int port : port number (0 - 127)
1865 * return: 0 : DCD off
1869 * Function 19: Flush the Rx/Tx buffer data of this port.
1871 * void MoxaPortFlushData(int port, int mode);
1872 * int port : port number (0 - 127)
1874 * 0 : flush the Rx buffer
1875 * 1 : flush the Tx buffer
1876 * 2 : flush the Rx and Tx buffer
1879 * Function 20: Write data.
1881 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
1882 * int port : port number (0 - 127)
1883 * unsigned char * buffer : pointer to write data buffer.
1884 * int length : write data length
1886 * return: 0 - length : real write data length
1889 * Function 21: Read data.
1891 * int MoxaPortReadData(int port, struct tty_struct *tty);
1892 * int port : port number (0 - 127)
1893 * struct tty_struct *tty : tty for data
1895 * return: 0 - length : real read data length
1898 * Function 24: Get the Tx buffer current queued data bytes
1900 * int MoxaPortTxQueue(int port);
1901 * int port : port number (0 - 127)
1903 * return: .. : Tx buffer current queued data bytes
1906 * Function 25: Get the Tx buffer current free space
1908 * int MoxaPortTxFree(int port);
1909 * int port : port number (0 - 127)
1911 * return: .. : Tx buffer current free space
1914 * Function 26: Get the Rx buffer current queued data bytes
1916 * int MoxaPortRxQueue(int port);
1917 * int port : port number (0 - 127)
1919 * return: .. : Rx buffer current queued data bytes
1922 * Function 28: Disable port data transmission.
1924 * void MoxaPortTxDisable(int port);
1925 * int port : port number (0 - 127)
1928 * Function 29: Enable port data transmission.
1930 * void MoxaPortTxEnable(int port);
1931 * int port : port number (0 - 127)
1934 * Function 31: Get the received BREAK signal count and reset it.
1936 * int MoxaPortResetBrkCnt(int port);
1937 * int port : port number (0 - 127)
1939 * return: 0 - .. : BREAK signal count
1942 * Function 34: Send out a BREAK signal.
1944 * void MoxaPortSendBreak(int port, int ms100);
1945 * int port : port number (0 - 127)
1946 * int ms100 : break signal time interval.
1947 * unit: 100 mini-second. if ms100 == 0, it will
1948 * send out a about 250 ms BREAK signal.
1951 int MoxaPortIsValid(int port)
1956 if (moxaChkPort[port] == 0)
1961 void MoxaPortEnable(int port)
1963 void __iomem *ofsAddr;
1964 int MoxaPortLineStatus(int);
1965 short lowwater = 512;
1967 ofsAddr = moxaTableAddr[port];
1968 writew(lowwater, ofsAddr + Low_water);
1969 moxaBreakCnt[port] = 0;
1970 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
1971 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
1972 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
1974 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
1977 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
1978 moxafunc(ofsAddr, FC_FlushQueue, 2);
1980 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
1981 MoxaPortLineStatus(port);
1984 void MoxaPortDisable(int port)
1986 void __iomem *ofsAddr = moxaTableAddr[port];
1988 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
1989 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
1990 writew(0, ofsAddr + HostStat);
1991 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
1994 long MoxaPortGetMaxBaud(int port)
1996 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
1997 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
2004 long MoxaPortSetBaud(int port, long baud)
2006 void __iomem *ofsAddr;
2010 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
2012 ofsAddr = moxaTableAddr[port];
2016 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2017 else if (max == 57600L)
2018 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2020 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2022 moxafunc(ofsAddr, FC_SetBaud, val);
2024 moxaCurBaud[port] = baud;
2028 int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud)
2030 void __iomem *ofsAddr;
2034 if (moxaChkPort[port] == 0 || termio == 0)
2036 ofsAddr = moxaTableAddr[port];
2037 cflag = termio->c_cflag; /* termio->c_cflag */
2039 mode = termio->c_cflag & CSIZE;
2042 else if (mode == CS6)
2044 else if (mode == CS7)
2046 else if (mode == CS8)
2049 if (termio->c_cflag & CSTOPB) {
2057 if (termio->c_cflag & PARENB) {
2058 if (termio->c_cflag & PARODD)
2065 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2067 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2068 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2069 if (baud >= 921600L)
2072 MoxaPortSetBaud(port, baud);
2074 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2075 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2076 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2077 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2078 wait_finish(ofsAddr);
2084 int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2087 if (!MoxaPortIsValid(port))
2090 if (moxaLineCtrl[port] & DTR_ON)
2096 if (moxaLineCtrl[port] & RTS_ON)
2104 void MoxaPortLineCtrl(int port, int dtr, int rts)
2106 void __iomem *ofsAddr;
2109 ofsAddr = moxaTableAddr[port];
2115 moxaLineCtrl[port] = mode;
2116 moxafunc(ofsAddr, FC_LineControl, mode);
2119 void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2121 void __iomem *ofsAddr;
2124 ofsAddr = moxaTableAddr[port];
2127 mode |= RTS_FlowCtl;
2129 mode |= CTS_FlowCtl;
2136 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2139 int MoxaPortLineStatus(int port)
2141 void __iomem *ofsAddr;
2144 ofsAddr = moxaTableAddr[port];
2145 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2146 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2147 moxafunc(ofsAddr, FC_LineStatus, 0);
2148 val = readw(ofsAddr + FuncArg);
2150 val = readw(ofsAddr + FlagStat) >> 4;
2155 if ((moxaDCDState[port] & DCD_oldstate) == 0)
2156 moxaDCDState[port] = (DCD_oldstate | DCD_changed);
2158 if (moxaDCDState[port] & DCD_oldstate)
2159 moxaDCDState[port] = DCD_changed;
2165 int MoxaPortDCDChange(int port)
2169 if (moxaChkPort[port] == 0)
2171 n = moxaDCDState[port];
2172 moxaDCDState[port] &= ~DCD_changed;
2177 int MoxaPortDCDON(int port)
2181 if (moxaChkPort[port] == 0)
2183 if (moxaDCDState[port] & DCD_oldstate)
2190 int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2195 ushort head, tx_mask, spage, epage;
2196 ushort pageno, pageofs, bufhead;
2197 void __iomem *baseAddr, *ofsAddr, *ofs;
2199 ofsAddr = moxaTableAddr[port];
2200 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2201 tx_mask = readw(ofsAddr + TX_mask);
2202 spage = readw(ofsAddr + Page_txb);
2203 epage = readw(ofsAddr + EndPage_txb);
2204 tail = readw(ofsAddr + TXwptr);
2205 head = readw(ofsAddr + TXrptr);
2206 c = (head > tail) ? (head - tail - 1)
2207 : (head - tail + tx_mask);
2210 moxaLog.txcnt[port] += c;
2212 if (spage == epage) {
2213 bufhead = readw(ofsAddr + Ofs_txb);
2214 writew(spage, baseAddr + Control_reg);
2217 len = head - tail - 1;
2219 len = tx_mask + 1 - tail;
2220 len = (c > len) ? len : c;
2221 ofs = baseAddr + DynPage_addr + bufhead + tail;
2222 for (i = 0; i < len; i++)
2223 writeb(*buffer++, ofs + i);
2224 tail = (tail + len) & tx_mask;
2227 writew(tail, ofsAddr + TXwptr);
2230 pageno = spage + (tail >> 13);
2231 pageofs = tail & Page_mask;
2233 cnt = Page_size - pageofs;
2237 writeb(pageno, baseAddr + Control_reg);
2238 ofs = baseAddr + DynPage_addr + pageofs;
2239 for (i = 0; i < cnt; i++)
2240 writeb(*buffer++, ofs + i);
2242 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2245 if (++pageno == epage)
2250 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2254 int MoxaPortReadData(int port, struct tty_struct *tty)
2256 register ushort head, pageofs;
2257 int i, count, cnt, len, total, remain;
2258 ushort tail, rx_mask, spage, epage;
2259 ushort pageno, bufhead;
2260 void __iomem *baseAddr, *ofsAddr, *ofs;
2262 ofsAddr = moxaTableAddr[port];
2263 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2264 head = readw(ofsAddr + RXrptr);
2265 tail = readw(ofsAddr + RXwptr);
2266 rx_mask = readw(ofsAddr + RX_mask);
2267 spage = readw(ofsAddr + Page_rxb);
2268 epage = readw(ofsAddr + EndPage_rxb);
2269 count = (tail >= head) ? (tail - head)
2270 : (tail - head + rx_mask + 1);
2275 remain = count - total;
2276 moxaLog.rxcnt[port] += total;
2278 if (spage == epage) {
2279 bufhead = readw(ofsAddr + Ofs_rxb);
2280 writew(spage, baseAddr + Control_reg);
2285 len = rx_mask + 1 - head;
2286 len = (count > len) ? len : count;
2287 ofs = baseAddr + DynPage_addr + bufhead + head;
2288 for (i = 0; i < len; i++)
2289 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2290 head = (head + len) & rx_mask;
2293 writew(head, ofsAddr + RXrptr);
2296 pageno = spage + (head >> 13);
2297 pageofs = head & Page_mask;
2299 cnt = Page_size - pageofs;
2303 writew(pageno, baseAddr + Control_reg);
2304 ofs = baseAddr + DynPage_addr + pageofs;
2305 for (i = 0; i < cnt; i++)
2306 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2308 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2311 if (++pageno == epage)
2316 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2317 moxaLowWaterChk = 1;
2318 moxaLowChkFlag[port] = 1;
2324 int MoxaPortTxQueue(int port)
2326 void __iomem *ofsAddr;
2327 ushort rptr, wptr, mask;
2330 ofsAddr = moxaTableAddr[port];
2331 rptr = readw(ofsAddr + TXrptr);
2332 wptr = readw(ofsAddr + TXwptr);
2333 mask = readw(ofsAddr + TX_mask);
2334 len = (wptr - rptr) & mask;
2338 int MoxaPortTxFree(int port)
2340 void __iomem *ofsAddr;
2341 ushort rptr, wptr, mask;
2344 ofsAddr = moxaTableAddr[port];
2345 rptr = readw(ofsAddr + TXrptr);
2346 wptr = readw(ofsAddr + TXwptr);
2347 mask = readw(ofsAddr + TX_mask);
2348 len = mask - ((wptr - rptr) & mask);
2352 int MoxaPortRxQueue(int port)
2354 void __iomem *ofsAddr;
2355 ushort rptr, wptr, mask;
2358 ofsAddr = moxaTableAddr[port];
2359 rptr = readw(ofsAddr + RXrptr);
2360 wptr = readw(ofsAddr + RXwptr);
2361 mask = readw(ofsAddr + RX_mask);
2362 len = (wptr - rptr) & mask;
2367 void MoxaPortTxDisable(int port)
2369 void __iomem *ofsAddr;
2371 ofsAddr = moxaTableAddr[port];
2372 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2375 void MoxaPortTxEnable(int port)
2377 void __iomem *ofsAddr;
2379 ofsAddr = moxaTableAddr[port];
2380 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2384 int MoxaPortResetBrkCnt(int port)
2387 cnt = moxaBreakCnt[port];
2388 moxaBreakCnt[port] = 0;
2393 void MoxaPortSendBreak(int port, int ms100)
2395 void __iomem *ofsAddr;
2397 ofsAddr = moxaTableAddr[port];
2399 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2400 moxadelay(ms100 * (HZ / 10));
2402 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2403 moxadelay(HZ / 4); /* 250 ms */
2405 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2408 static int moxa_get_serial_info(struct moxa_str *info,
2409 struct serial_struct __user *retinfo)
2411 struct serial_struct tmp;
2413 memset(&tmp, 0, sizeof(tmp));
2414 tmp.type = info->type;
2415 tmp.line = info->port;
2418 tmp.flags = info->asyncflags;
2419 tmp.baud_base = 921600;
2420 tmp.close_delay = info->close_delay;
2421 tmp.closing_wait = info->closing_wait;
2422 tmp.custom_divisor = 0;
2424 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2430 static int moxa_set_serial_info(struct moxa_str *info,
2431 struct serial_struct __user *new_info)
2433 struct serial_struct new_serial;
2435 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2438 if ((new_serial.irq != 0) ||
2439 (new_serial.port != 0) ||
2440 // (new_serial.type != info->type) ||
2441 (new_serial.custom_divisor != 0) ||
2442 (new_serial.baud_base != 921600))
2445 if (!capable(CAP_SYS_ADMIN)) {
2446 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2447 (info->asyncflags & ~ASYNC_USR_MASK)))
2450 info->close_delay = new_serial.close_delay * HZ / 100;
2451 info->closing_wait = new_serial.closing_wait * HZ / 100;
2454 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2455 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2457 if (new_serial.type == PORT_16550A) {
2458 MoxaSetFifo(info->port, 1);
2460 MoxaSetFifo(info->port, 0);
2463 info->type = new_serial.type;
2469 /*****************************************************************************
2470 * Static local functions: *
2471 *****************************************************************************/
2473 * moxadelay - delays a specified number ticks
2475 static void moxadelay(int tick)
2477 unsigned long st, et;
2481 while (time_before(jiffies, et));
2484 static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
2487 writew(arg, ofsAddr + FuncArg);
2488 writew(cmd, ofsAddr + FuncCode);
2489 wait_finish(ofsAddr);
2492 static void wait_finish(void __iomem *ofsAddr)
2497 while (readw(ofsAddr + FuncCode) != 0) {
2499 if ((j - i) > moxaFuncTout) {
2505 static void low_water_check(void __iomem *ofsAddr)
2508 ushort rptr, wptr, mask;
2510 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2511 rptr = readw(ofsAddr + RXrptr);
2512 wptr = readw(ofsAddr + RXwptr);
2513 mask = readw(ofsAddr + RX_mask);
2514 len = (wptr - rptr) & mask;
2515 if (len <= Low_water)
2516 moxafunc(ofsAddr, FC_SendXon, 0);
2520 static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2522 void __iomem *baseAddr;
2525 if(copy_from_user(moxaBuff, tmp, len))
2527 baseAddr = moxaBaseAddr[cardno];
2528 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2529 moxadelay(1); /* delay 10 ms */
2530 for (i = 0; i < 4096; i++)
2531 writeb(0, baseAddr + i); /* clear fix page */
2532 for (i = 0; i < len; i++)
2533 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2534 writeb(0, baseAddr + Control_reg); /* restart */
2538 static int moxafindcard(int cardno)
2540 void __iomem *baseAddr;
2543 baseAddr = moxaBaseAddr[cardno];
2544 switch (moxa_boards[cardno].boardType) {
2545 case MOXA_BOARD_C218_ISA:
2546 case MOXA_BOARD_C218_PCI:
2547 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2551 case MOXA_BOARD_CP204J:
2552 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2557 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2560 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2567 static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2569 void __iomem *baseAddr;
2572 if(len > sizeof(moxaBuff))
2574 if(copy_from_user(moxaBuff, tmp, len))
2576 baseAddr = moxaBaseAddr[cardno];
2577 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2578 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2579 for (i = 0; i < 7168; i++)
2580 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2581 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2582 for (i = 0; i < (len - 7168); i++)
2583 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2587 static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2589 void __iomem *baseAddr, *ofsAddr;
2590 int retval, port, i;
2592 if(copy_from_user(moxaBuff, tmp, len))
2594 baseAddr = moxaBaseAddr[cardno];
2595 switch (moxa_boards[cardno].boardType) {
2596 case MOXA_BOARD_C218_ISA:
2597 case MOXA_BOARD_C218_PCI:
2598 case MOXA_BOARD_CP204J:
2599 retval = moxaloadc218(cardno, baseAddr, len);
2602 port = cardno * MAX_PORTS_PER_BOARD;
2603 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2604 moxaChkPort[port] = 1;
2605 moxaCurBaud[port] = 9600L;
2606 moxaDCDState[port] = 0;
2607 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2608 ofsAddr = moxaTableAddr[port];
2609 writew(C218rx_mask, ofsAddr + RX_mask);
2610 writew(C218tx_mask, ofsAddr + TX_mask);
2611 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2612 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2614 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2615 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2620 retval = moxaloadc320(cardno, baseAddr, len,
2621 &moxa_boards[cardno].numPorts);
2624 port = cardno * MAX_PORTS_PER_BOARD;
2625 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2626 moxaChkPort[port] = 1;
2627 moxaCurBaud[port] = 9600L;
2628 moxaDCDState[port] = 0;
2629 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2630 ofsAddr = moxaTableAddr[port];
2631 if (moxa_boards[cardno].numPorts == 8) {
2632 writew(C320p8rx_mask, ofsAddr + RX_mask);
2633 writew(C320p8tx_mask, ofsAddr + TX_mask);
2634 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2635 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2636 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2637 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2639 } else if (moxa_boards[cardno].numPorts == 16) {
2640 writew(C320p16rx_mask, ofsAddr + RX_mask);
2641 writew(C320p16tx_mask, ofsAddr + TX_mask);
2642 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2643 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2644 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2645 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2647 } else if (moxa_boards[cardno].numPorts == 24) {
2648 writew(C320p24rx_mask, ofsAddr + RX_mask);
2649 writew(C320p24tx_mask, ofsAddr + TX_mask);
2650 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2651 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2652 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2653 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2654 } else if (moxa_boards[cardno].numPorts == 32) {
2655 writew(C320p32rx_mask, ofsAddr + RX_mask);
2656 writew(C320p32tx_mask, ofsAddr + TX_mask);
2657 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2658 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2659 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2660 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2661 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2666 loadstat[cardno] = 1;
2670 static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
2673 int i, j, len1, len2;
2674 ushort usum, *ptr, keycode;
2676 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2677 keycode = CP204J_KeyCode;
2679 keycode = C218_KeyCode;
2682 ptr = (ushort *) moxaBuff;
2683 for (i = 0; i < len1; i++)
2684 usum += le16_to_cpu(*(ptr + i));
2690 len2 = (len1 > 2048) ? 2048 : len1;
2692 for (i = 0; i < len2 << 1; i++)
2693 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2696 writew(len2, baseAddr + C218DLoad_len);
2697 writew(0, baseAddr + C218_key);
2698 for (i = 0; i < 100; i++) {
2699 if (readw(baseAddr + C218_key) == keycode)
2701 moxadelay(1); /* delay 10 ms */
2703 if (readw(baseAddr + C218_key) != keycode) {
2707 writew(0, baseAddr + C218DLoad_len);
2708 writew(usum, baseAddr + C218check_sum);
2709 writew(0, baseAddr + C218_key);
2710 for (i = 0; i < 100; i++) {
2711 if (readw(baseAddr + C218_key) == keycode)
2713 moxadelay(1); /* delay 10 ms */
2716 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2717 if (readb(baseAddr + C218chksum_ok) != 1) {
2720 writew(0, baseAddr + C218_key);
2721 for (i = 0; i < 100; i++) {
2722 if (readw(baseAddr + Magic_no) == Magic_code)
2724 moxadelay(1); /* delay 10 ms */
2726 if (readw(baseAddr + Magic_no) != Magic_code) {
2729 writew(1, baseAddr + Disable_IRQ);
2730 writew(0, baseAddr + Magic_no);
2731 for (i = 0; i < 100; i++) {
2732 if (readw(baseAddr + Magic_no) == Magic_code)
2734 moxadelay(1); /* delay 10 ms */
2736 if (readw(baseAddr + Magic_no) != Magic_code) {
2740 moxaIntNdx[cardno] = baseAddr + IRQindex;
2741 moxaIntPend[cardno] = baseAddr + IRQpending;
2742 moxaIntTable[cardno] = baseAddr + IRQtable;
2746 static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
2749 int i, j, wlen, len2, retry;
2754 uptr = (ushort *) moxaBuff;
2755 for (i = 0; i < wlen; i++)
2756 usum += le16_to_cpu(uptr[i]);
2767 for (i = 0; i < len2; i++)
2768 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
2771 writew(len2, baseAddr + C320DLoad_len);
2772 writew(0, baseAddr + C320_key);
2773 for (i = 0; i < 10; i++) {
2774 if (readw(baseAddr + C320_key) == C320_KeyCode)
2778 if (readw(baseAddr + C320_key) != C320_KeyCode)
2781 writew(0, baseAddr + C320DLoad_len);
2782 writew(usum, baseAddr + C320check_sum);
2783 writew(0, baseAddr + C320_key);
2784 for (i = 0; i < 10; i++) {
2785 if (readw(baseAddr + C320_key) == C320_KeyCode)
2790 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
2791 if (readb(baseAddr + C320chksum_ok) != 1)
2793 writew(0, baseAddr + C320_key);
2794 for (i = 0; i < 600; i++) {
2795 if (readw(baseAddr + Magic_no) == Magic_code)
2799 if (readw(baseAddr + Magic_no) != Magic_code)
2802 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
2803 writew(0x3800, baseAddr + TMS320_PORT1);
2804 writew(0x3900, baseAddr + TMS320_PORT2);
2805 writew(28499, baseAddr + TMS320_CLOCK);
2807 writew(0x3200, baseAddr + TMS320_PORT1);
2808 writew(0x3400, baseAddr + TMS320_PORT2);
2809 writew(19999, baseAddr + TMS320_CLOCK);
2811 writew(1, baseAddr + Disable_IRQ);
2812 writew(0, baseAddr + Magic_no);
2813 for (i = 0; i < 500; i++) {
2814 if (readw(baseAddr + Magic_no) == Magic_code)
2818 if (readw(baseAddr + Magic_no) != Magic_code)
2821 j = readw(baseAddr + Module_cnt);
2825 writew(j, baseAddr + Module_no);
2826 writew(0, baseAddr + Magic_no);
2827 for (i = 0; i < 600; i++) {
2828 if (readw(baseAddr + Magic_no) == Magic_code)
2832 if (readw(baseAddr + Magic_no) != Magic_code)
2835 moxaIntNdx[cardno] = baseAddr + IRQindex;
2836 moxaIntPend[cardno] = baseAddr + IRQpending;
2837 moxaIntTable[cardno] = baseAddr + IRQtable;
2841 static void MoxaSetFifo(int port, int enable)
2843 void __iomem *ofsAddr = moxaTableAddr[port];
2846 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
2847 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
2849 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
2850 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);