Char: moxa, remove static isa support
[linux-2.6/openmoko-kernel/knife-kernel.git] / drivers / char / moxa.c
blob7f4d1ec4b03d522db289ff4701096acb2e8b067d
1 /*****************************************************************************/
2 /*
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
18 * for : LINUX
19 * date : 1999/1/7
20 * version : 5.1
23 #include <linux/module.h>
24 #include <linux/types.h>
25 #include <linux/mm.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>
44 #include <linux/completion.h>
46 #include <asm/system.h>
47 #include <asm/io.h>
48 #include <asm/uaccess.h>
50 #define MOXA_VERSION "5.1k"
52 #define MOXAMAJOR 172
53 #define MOXACUMAJOR 173
55 #define MAX_BOARDS 4 /* Don't change this value */
56 #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
57 #define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD)
60 * Define the Moxa PCI vendor and device IDs.
62 #define MOXA_BUS_TYPE_ISA 0
63 #define MOXA_BUS_TYPE_PCI 1
65 enum {
66 MOXA_BOARD_C218_PCI = 1,
67 MOXA_BOARD_C218_ISA,
68 MOXA_BOARD_C320_PCI,
69 MOXA_BOARD_C320_ISA,
70 MOXA_BOARD_CP204J,
73 static char *moxa_brdname[] =
75 "C218 Turbo PCI series",
76 "C218 Turbo ISA series",
77 "C320 Turbo PCI series",
78 "C320 Turbo ISA series",
79 "CP-204J series",
82 #ifdef CONFIG_PCI
83 static struct pci_device_id moxa_pcibrds[] = {
84 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218),
85 .driver_data = MOXA_BOARD_C218_PCI },
86 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320),
87 .driver_data = MOXA_BOARD_C320_PCI },
88 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J),
89 .driver_data = MOXA_BOARD_CP204J },
90 { 0 }
92 MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
93 #endif /* CONFIG_PCI */
95 static struct moxa_board_conf {
96 int boardType;
97 int numPorts;
98 unsigned long baseAddr;
99 int busType;
101 int loadstat;
103 void __iomem *basemem;
104 void __iomem *intNdx;
105 void __iomem *intPend;
106 void __iomem *intTable;
107 } moxa_boards[MAX_BOARDS];
109 struct mxser_mstatus {
110 tcflag_t cflag;
111 int cts;
112 int dsr;
113 int ri;
114 int dcd;
117 struct moxaq_str {
118 int inq;
119 int outq;
122 struct moxa_port {
123 int type;
124 int port;
125 int close_delay;
126 unsigned short closing_wait;
127 int count;
128 int blocked_open;
129 long event; /* long req'd for set_bit --RR */
130 int asyncflags;
131 unsigned long statusflags;
132 struct tty_struct *tty;
133 int cflag;
134 wait_queue_head_t open_wait;
135 struct completion close_wait;
137 struct timer_list emptyTimer;
139 char chkPort;
140 char lineCtrl;
141 void __iomem *tableAddr;
142 long curBaud;
143 char DCDState;
144 char lowChkFlag;
146 ushort breakCnt;
149 /* statusflags */
150 #define TXSTOPPED 0x1
151 #define LOWWAIT 0x2
152 #define EMPTYWAIT 0x4
153 #define THROTTLE 0x8
155 #define SERIAL_DO_RESTART
157 #define WAKEUP_CHARS 256
159 static int ttymajor = MOXAMAJOR;
160 /* Variables for insmod */
161 #ifdef MODULE
162 static int baseaddr[4];
163 static int type[4];
164 static int numports[4];
165 #endif
167 MODULE_AUTHOR("William Chen");
168 MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
169 MODULE_LICENSE("GPL");
170 #ifdef MODULE
171 module_param_array(type, int, NULL, 0);
172 module_param_array(baseaddr, int, NULL, 0);
173 module_param_array(numports, int, NULL, 0);
174 #endif
175 module_param(ttymajor, int, 0);
178 * static functions:
180 static int moxa_open(struct tty_struct *, struct file *);
181 static void moxa_close(struct tty_struct *, struct file *);
182 static int moxa_write(struct tty_struct *, const unsigned char *, int);
183 static int moxa_write_room(struct tty_struct *);
184 static void moxa_flush_buffer(struct tty_struct *);
185 static int moxa_chars_in_buffer(struct tty_struct *);
186 static void moxa_flush_chars(struct tty_struct *);
187 static void moxa_put_char(struct tty_struct *, unsigned char);
188 static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
189 static void moxa_throttle(struct tty_struct *);
190 static void moxa_unthrottle(struct tty_struct *);
191 static void moxa_set_termios(struct tty_struct *, struct ktermios *);
192 static void moxa_stop(struct tty_struct *);
193 static void moxa_start(struct tty_struct *);
194 static void moxa_hangup(struct tty_struct *);
195 static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
196 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
197 unsigned int set, unsigned int clear);
198 static void moxa_poll(unsigned long);
199 static void moxa_set_tty_param(struct tty_struct *, struct ktermios *);
200 static int moxa_block_till_ready(struct tty_struct *, struct file *,
201 struct moxa_port *);
202 static void moxa_setup_empty_event(struct tty_struct *);
203 static void moxa_check_xmit_empty(unsigned long);
204 static void moxa_shut_down(struct moxa_port *);
205 static void moxa_receive_data(struct moxa_port *);
207 * moxa board interface functions:
209 static void MoxaDriverInit(void);
210 static int MoxaDriverIoctl(unsigned int, unsigned long, int);
211 static int MoxaDriverPoll(void);
212 static int MoxaPortsOfCard(int);
213 static int MoxaPortIsValid(int);
214 static void MoxaPortEnable(int);
215 static void MoxaPortDisable(int);
216 static long MoxaPortGetMaxBaud(int);
217 static long MoxaPortSetBaud(int, long);
218 static int MoxaPortSetTermio(int, struct ktermios *, speed_t);
219 static int MoxaPortGetLineOut(int, int *, int *);
220 static void MoxaPortLineCtrl(int, int, int);
221 static void MoxaPortFlowCtrl(int, int, int, int, int, int);
222 static int MoxaPortLineStatus(int);
223 static int MoxaPortDCDChange(int);
224 static int MoxaPortDCDON(int);
225 static void MoxaPortFlushData(int, int);
226 static int MoxaPortWriteData(int, unsigned char *, int);
227 static int MoxaPortReadData(int, struct tty_struct *tty);
228 static int MoxaPortTxQueue(int);
229 static int MoxaPortRxQueue(int);
230 static int MoxaPortTxFree(int);
231 static void MoxaPortTxDisable(int);
232 static void MoxaPortTxEnable(int);
233 static int MoxaPortResetBrkCnt(int);
234 static void MoxaPortSendBreak(int, int);
235 static int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *);
236 static int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *);
237 static void MoxaSetFifo(int port, int enable);
239 static const struct tty_operations moxa_ops = {
240 .open = moxa_open,
241 .close = moxa_close,
242 .write = moxa_write,
243 .write_room = moxa_write_room,
244 .flush_buffer = moxa_flush_buffer,
245 .chars_in_buffer = moxa_chars_in_buffer,
246 .flush_chars = moxa_flush_chars,
247 .put_char = moxa_put_char,
248 .ioctl = moxa_ioctl,
249 .throttle = moxa_throttle,
250 .unthrottle = moxa_unthrottle,
251 .set_termios = moxa_set_termios,
252 .stop = moxa_stop,
253 .start = moxa_start,
254 .hangup = moxa_hangup,
255 .tiocmget = moxa_tiocmget,
256 .tiocmset = moxa_tiocmset,
259 static struct tty_driver *moxaDriver;
260 static struct moxa_port moxa_ports[MAX_PORTS];
261 static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0);
262 static DEFINE_SPINLOCK(moxa_lock);
264 #ifdef CONFIG_PCI
265 static int __devinit moxa_pci_probe(struct pci_dev *pdev,
266 const struct pci_device_id *ent)
268 struct moxa_board_conf *board;
269 unsigned int i;
270 int board_type = ent->driver_data;
271 int retval;
273 retval = pci_enable_device(pdev);
274 if (retval) {
275 dev_err(&pdev->dev, "can't enable pci device\n");
276 goto err;
279 for (i = 0; i < MAX_BOARDS; i++)
280 if (moxa_boards[i].basemem == NULL)
281 break;
283 retval = -ENODEV;
284 if (i >= MAX_BOARDS) {
285 dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards "
286 "found. Board is ignored.\n", MAX_BOARDS);
287 goto err;
290 board = &moxa_boards[i];
291 board->basemem = pci_iomap(pdev, 2, 0x4000);
292 if (board->basemem == NULL) {
293 dev_err(&pdev->dev, "can't remap io space 2\n");
294 goto err;
297 board->boardType = board_type;
298 switch (board_type) {
299 case MOXA_BOARD_C218_ISA:
300 case MOXA_BOARD_C218_PCI:
301 board->numPorts = 8;
302 break;
304 case MOXA_BOARD_CP204J:
305 board->numPorts = 4;
306 break;
307 default:
308 board->numPorts = 0;
309 break;
311 board->busType = MOXA_BUS_TYPE_PCI;
313 pci_set_drvdata(pdev, board);
315 return (0);
316 err:
317 return retval;
320 static void __devexit moxa_pci_remove(struct pci_dev *pdev)
322 struct moxa_board_conf *brd = pci_get_drvdata(pdev);
324 pci_iounmap(pdev, brd->basemem);
325 brd->basemem = NULL;
328 static struct pci_driver moxa_pci_driver = {
329 .name = "moxa",
330 .id_table = moxa_pcibrds,
331 .probe = moxa_pci_probe,
332 .remove = __devexit_p(moxa_pci_remove)
334 #endif /* CONFIG_PCI */
336 static int __init moxa_init(void)
338 int i, numBoards = 0, retval = 0;
339 struct moxa_port *ch;
341 printk(KERN_INFO "MOXA Intellio family driver version %s\n",
342 MOXA_VERSION);
343 moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
344 if (!moxaDriver)
345 return -ENOMEM;
347 moxaDriver->owner = THIS_MODULE;
348 moxaDriver->name = "ttyMX";
349 moxaDriver->major = ttymajor;
350 moxaDriver->minor_start = 0;
351 moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
352 moxaDriver->subtype = SERIAL_TYPE_NORMAL;
353 moxaDriver->init_termios = tty_std_termios;
354 moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
355 moxaDriver->init_termios.c_ispeed = 9600;
356 moxaDriver->init_termios.c_ospeed = 9600;
357 moxaDriver->flags = TTY_DRIVER_REAL_RAW;
358 tty_set_operations(moxaDriver, &moxa_ops);
360 for (i = 0, ch = moxa_ports; i < MAX_PORTS; i++, ch++) {
361 ch->type = PORT_16550A;
362 ch->port = i;
363 ch->close_delay = 5 * HZ / 10;
364 ch->closing_wait = 30 * HZ;
365 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
366 init_waitqueue_head(&ch->open_wait);
367 init_completion(&ch->close_wait);
369 setup_timer(&ch->emptyTimer, moxa_check_xmit_empty,
370 (unsigned long)ch);
373 pr_debug("Moxa tty devices major number = %d\n", ttymajor);
375 if (tty_register_driver(moxaDriver)) {
376 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
377 put_tty_driver(moxaDriver);
378 return -1;
381 mod_timer(&moxaTimer, jiffies + HZ / 50);
383 /* Find the boards defined form module args. */
384 #ifdef MODULE
385 for (i = 0; i < MAX_BOARDS; i++) {
386 if ((type[i] == MOXA_BOARD_C218_ISA) ||
387 (type[i] == MOXA_BOARD_C320_ISA)) {
388 pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n",
389 numBoards + 1, moxa_brdname[type[i] - 1],
390 (unsigned long)baseaddr[i]);
391 if (numBoards >= MAX_BOARDS) {
392 printk(KERN_WARNING "More than %d MOXA "
393 "Intellio family boards found. Board "
394 "is ignored.\n", MAX_BOARDS);
395 continue;
397 moxa_boards[numBoards].boardType = type[i];
398 if (type[i] == MOXA_BOARD_C218_ISA)
399 moxa_boards[numBoards].numPorts = 8;
400 else
401 moxa_boards[numBoards].numPorts = numports[i];
402 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
403 moxa_boards[numBoards].baseAddr = baseaddr[i];
404 numBoards++;
407 #endif
409 #ifdef CONFIG_PCI
410 retval = pci_register_driver(&moxa_pci_driver);
411 if (retval) {
412 printk(KERN_ERR "Can't register moxa pci driver!\n");
413 if (numBoards)
414 retval = 0;
416 #endif
418 for (i = 0; i < numBoards; i++) {
419 moxa_boards[i].basemem = ioremap(moxa_boards[i].baseAddr,
420 0x4000);
423 return retval;
426 static void __exit moxa_exit(void)
428 int i;
430 del_timer_sync(&moxaTimer);
432 for (i = 0; i < MAX_PORTS; i++)
433 del_timer_sync(&moxa_ports[i].emptyTimer);
435 if (tty_unregister_driver(moxaDriver))
436 printk(KERN_ERR "Couldn't unregister MOXA Intellio family "
437 "serial driver\n");
438 put_tty_driver(moxaDriver);
440 #ifdef CONFIG_PCI
441 pci_unregister_driver(&moxa_pci_driver);
442 #endif
444 for (i = 0; i < MAX_BOARDS; i++)
445 if (moxa_boards[i].basemem)
446 iounmap(moxa_boards[i].basemem);
449 module_init(moxa_init);
450 module_exit(moxa_exit);
452 static int moxa_open(struct tty_struct *tty, struct file *filp)
454 struct moxa_port *ch;
455 int port;
456 int retval;
458 port = tty->index;
459 if (port == MAX_PORTS) {
460 return (0);
462 if (!MoxaPortIsValid(port)) {
463 tty->driver_data = NULL;
464 return (-ENODEV);
467 ch = &moxa_ports[port];
468 ch->count++;
469 tty->driver_data = ch;
470 ch->tty = tty;
471 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
472 ch->statusflags = 0;
473 moxa_set_tty_param(tty, tty->termios);
474 MoxaPortLineCtrl(ch->port, 1, 1);
475 MoxaPortEnable(ch->port);
476 ch->asyncflags |= ASYNC_INITIALIZED;
478 retval = moxa_block_till_ready(tty, filp, ch);
480 moxa_unthrottle(tty);
482 if (ch->type == PORT_16550A) {
483 MoxaSetFifo(ch->port, 1);
484 } else {
485 MoxaSetFifo(ch->port, 0);
488 return (retval);
491 static void moxa_close(struct tty_struct *tty, struct file *filp)
493 struct moxa_port *ch;
494 int port;
496 port = tty->index;
497 if (port == MAX_PORTS) {
498 return;
500 if (!MoxaPortIsValid(port)) {
501 pr_debug("Invalid portno in moxa_close\n");
502 tty->driver_data = NULL;
503 return;
505 if (tty->driver_data == NULL) {
506 return;
508 if (tty_hung_up_p(filp)) {
509 return;
511 ch = (struct moxa_port *) tty->driver_data;
513 if ((tty->count == 1) && (ch->count != 1)) {
514 printk(KERN_WARNING "moxa_close: bad serial port count; "
515 "tty->count is 1, ch->count is %d\n", ch->count);
516 ch->count = 1;
518 if (--ch->count < 0) {
519 printk(KERN_WARNING "moxa_close: bad serial port count, "
520 "device=%s\n", tty->name);
521 ch->count = 0;
523 if (ch->count) {
524 return;
526 ch->asyncflags |= ASYNC_CLOSING;
528 ch->cflag = tty->termios->c_cflag;
529 if (ch->asyncflags & ASYNC_INITIALIZED) {
530 moxa_setup_empty_event(tty);
531 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
532 del_timer_sync(&moxa_ports[ch->port].emptyTimer);
534 moxa_shut_down(ch);
535 MoxaPortFlushData(port, 2);
537 if (tty->driver->flush_buffer)
538 tty->driver->flush_buffer(tty);
539 tty_ldisc_flush(tty);
541 tty->closing = 0;
542 ch->event = 0;
543 ch->tty = NULL;
544 if (ch->blocked_open) {
545 if (ch->close_delay) {
546 msleep_interruptible(jiffies_to_msecs(ch->close_delay));
548 wake_up_interruptible(&ch->open_wait);
550 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
551 complete_all(&ch->close_wait);
554 static int moxa_write(struct tty_struct *tty,
555 const unsigned char *buf, int count)
557 struct moxa_port *ch;
558 int len, port;
559 unsigned long flags;
561 ch = (struct moxa_port *) tty->driver_data;
562 if (ch == NULL)
563 return (0);
564 port = ch->port;
566 spin_lock_irqsave(&moxa_lock, flags);
567 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
568 spin_unlock_irqrestore(&moxa_lock, flags);
570 /*********************************************
571 if ( !(ch->statusflags & LOWWAIT) &&
572 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
573 ************************************************/
574 ch->statusflags |= LOWWAIT;
575 return (len);
578 static int moxa_write_room(struct tty_struct *tty)
580 struct moxa_port *ch;
582 if (tty->stopped)
583 return (0);
584 ch = (struct moxa_port *) tty->driver_data;
585 if (ch == NULL)
586 return (0);
587 return (MoxaPortTxFree(ch->port));
590 static void moxa_flush_buffer(struct tty_struct *tty)
592 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
594 if (ch == NULL)
595 return;
596 MoxaPortFlushData(ch->port, 1);
597 tty_wakeup(tty);
600 static int moxa_chars_in_buffer(struct tty_struct *tty)
602 int chars;
603 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
606 * Sigh...I have to check if driver_data is NULL here, because
607 * if an open() fails, the TTY subsystem eventually calls
608 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
609 * routine. And since the open() failed, we return 0 here. TDJ
611 if (ch == NULL)
612 return (0);
613 chars = MoxaPortTxQueue(ch->port);
614 if (chars) {
616 * Make it possible to wakeup anything waiting for output
617 * in tty_ioctl.c, etc.
619 if (!(ch->statusflags & EMPTYWAIT))
620 moxa_setup_empty_event(tty);
622 return (chars);
625 static void moxa_flush_chars(struct tty_struct *tty)
628 * Don't think I need this, because this is called to empty the TX
629 * buffer for the 16450, 16550, etc.
633 static void moxa_put_char(struct tty_struct *tty, unsigned char c)
635 struct moxa_port *ch;
636 int port;
637 unsigned long flags;
639 ch = (struct moxa_port *) tty->driver_data;
640 if (ch == NULL)
641 return;
642 port = ch->port;
643 spin_lock_irqsave(&moxa_lock, flags);
644 MoxaPortWriteData(port, &c, 1);
645 spin_unlock_irqrestore(&moxa_lock, flags);
646 /************************************************
647 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
648 *************************************************/
649 ch->statusflags |= LOWWAIT;
652 static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
654 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
655 int port;
656 int flag = 0, dtr, rts;
658 port = tty->index;
659 if ((port != MAX_PORTS) && (!ch))
660 return (-EINVAL);
662 MoxaPortGetLineOut(ch->port, &dtr, &rts);
663 if (dtr)
664 flag |= TIOCM_DTR;
665 if (rts)
666 flag |= TIOCM_RTS;
667 dtr = MoxaPortLineStatus(ch->port);
668 if (dtr & 1)
669 flag |= TIOCM_CTS;
670 if (dtr & 2)
671 flag |= TIOCM_DSR;
672 if (dtr & 4)
673 flag |= TIOCM_CD;
674 return flag;
677 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
678 unsigned int set, unsigned int clear)
680 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
681 int port;
682 int dtr, rts;
684 port = tty->index;
685 if ((port != MAX_PORTS) && (!ch))
686 return (-EINVAL);
688 MoxaPortGetLineOut(ch->port, &dtr, &rts);
689 if (set & TIOCM_RTS)
690 rts = 1;
691 if (set & TIOCM_DTR)
692 dtr = 1;
693 if (clear & TIOCM_RTS)
694 rts = 0;
695 if (clear & TIOCM_DTR)
696 dtr = 0;
697 MoxaPortLineCtrl(ch->port, dtr, rts);
698 return 0;
701 static int moxa_ioctl(struct tty_struct *tty, struct file *file,
702 unsigned int cmd, unsigned long arg)
704 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
705 register int port;
706 void __user *argp = (void __user *)arg;
707 int retval;
709 port = tty->index;
710 if ((port != MAX_PORTS) && (!ch))
711 return (-EINVAL);
713 switch (cmd) {
714 case TCSBRK: /* SVID version: non-zero arg --> no break */
715 retval = tty_check_change(tty);
716 if (retval)
717 return (retval);
718 moxa_setup_empty_event(tty);
719 tty_wait_until_sent(tty, 0);
720 if (!arg)
721 MoxaPortSendBreak(ch->port, 0);
722 return (0);
723 case TCSBRKP: /* support for POSIX tcsendbreak() */
724 retval = tty_check_change(tty);
725 if (retval)
726 return (retval);
727 moxa_setup_empty_event(tty);
728 tty_wait_until_sent(tty, 0);
729 MoxaPortSendBreak(ch->port, arg);
730 return (0);
731 case TIOCGSOFTCAR:
732 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
733 case TIOCSSOFTCAR:
734 if(get_user(retval, (unsigned long __user *) argp))
735 return -EFAULT;
736 arg = retval;
737 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
738 (arg ? CLOCAL : 0));
739 if (C_CLOCAL(tty))
740 ch->asyncflags &= ~ASYNC_CHECK_CD;
741 else
742 ch->asyncflags |= ASYNC_CHECK_CD;
743 return (0);
744 case TIOCGSERIAL:
745 return moxa_get_serial_info(ch, argp);
747 case TIOCSSERIAL:
748 return moxa_set_serial_info(ch, argp);
749 default:
750 retval = MoxaDriverIoctl(cmd, arg, port);
752 return (retval);
755 static void moxa_throttle(struct tty_struct *tty)
757 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
759 ch->statusflags |= THROTTLE;
762 static void moxa_unthrottle(struct tty_struct *tty)
764 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
766 ch->statusflags &= ~THROTTLE;
769 static void moxa_set_termios(struct tty_struct *tty,
770 struct ktermios *old_termios)
772 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
774 if (ch == NULL)
775 return;
776 moxa_set_tty_param(tty, old_termios);
777 if (!(old_termios->c_cflag & CLOCAL) &&
778 (tty->termios->c_cflag & CLOCAL))
779 wake_up_interruptible(&ch->open_wait);
782 static void moxa_stop(struct tty_struct *tty)
784 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
786 if (ch == NULL)
787 return;
788 MoxaPortTxDisable(ch->port);
789 ch->statusflags |= TXSTOPPED;
793 static void moxa_start(struct tty_struct *tty)
795 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
797 if (ch == NULL)
798 return;
800 if (!(ch->statusflags & TXSTOPPED))
801 return;
803 MoxaPortTxEnable(ch->port);
804 ch->statusflags &= ~TXSTOPPED;
807 static void moxa_hangup(struct tty_struct *tty)
809 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
811 moxa_flush_buffer(tty);
812 moxa_shut_down(ch);
813 ch->event = 0;
814 ch->count = 0;
815 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
816 ch->tty = NULL;
817 wake_up_interruptible(&ch->open_wait);
820 static void moxa_poll(unsigned long ignored)
822 register int card;
823 struct moxa_port *ch;
824 struct tty_struct *tp;
825 int i, ports;
827 del_timer(&moxaTimer);
829 if (MoxaDriverPoll() < 0) {
830 mod_timer(&moxaTimer, jiffies + HZ / 50);
831 return;
833 for (card = 0; card < MAX_BOARDS; card++) {
834 if ((ports = MoxaPortsOfCard(card)) <= 0)
835 continue;
836 ch = &moxa_ports[card * MAX_PORTS_PER_BOARD];
837 for (i = 0; i < ports; i++, ch++) {
838 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
839 continue;
840 if (!(ch->statusflags & THROTTLE) &&
841 (MoxaPortRxQueue(ch->port) > 0))
842 moxa_receive_data(ch);
843 if ((tp = ch->tty) == 0)
844 continue;
845 if (ch->statusflags & LOWWAIT) {
846 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
847 if (!tp->stopped) {
848 ch->statusflags &= ~LOWWAIT;
849 tty_wakeup(tp);
853 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
854 tty_insert_flip_char(tp, 0, TTY_BREAK);
855 tty_schedule_flip(tp);
857 if (MoxaPortDCDChange(ch->port)) {
858 if (ch->asyncflags & ASYNC_CHECK_CD) {
859 if (MoxaPortDCDON(ch->port))
860 wake_up_interruptible(&ch->open_wait);
861 else {
862 tty_hangup(tp);
863 wake_up_interruptible(&ch->open_wait);
864 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
871 mod_timer(&moxaTimer, jiffies + HZ / 50);
874 /******************************************************************************/
876 static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios)
878 register struct ktermios *ts;
879 struct moxa_port *ch;
880 int rts, cts, txflow, rxflow, xany, baud;
882 ch = (struct moxa_port *) tty->driver_data;
883 ts = tty->termios;
884 if (ts->c_cflag & CLOCAL)
885 ch->asyncflags &= ~ASYNC_CHECK_CD;
886 else
887 ch->asyncflags |= ASYNC_CHECK_CD;
888 rts = cts = txflow = rxflow = xany = 0;
889 if (ts->c_cflag & CRTSCTS)
890 rts = cts = 1;
891 if (ts->c_iflag & IXON)
892 txflow = 1;
893 if (ts->c_iflag & IXOFF)
894 rxflow = 1;
895 if (ts->c_iflag & IXANY)
896 xany = 1;
898 /* Clear the features we don't support */
899 ts->c_cflag &= ~CMSPAR;
900 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
901 baud = MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty));
902 if (baud == -1)
903 baud = tty_termios_baud_rate(old_termios);
904 /* Not put the baud rate into the termios data */
905 tty_encode_baud_rate(tty, baud, baud);
908 static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp,
909 struct moxa_port *ch)
911 DECLARE_WAITQUEUE(wait,current);
912 unsigned long flags;
913 int retval;
914 int do_clocal = C_CLOCAL(tty);
917 * If the device is in the middle of being closed, then block
918 * until it's done, and then try again.
920 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
921 if (ch->asyncflags & ASYNC_CLOSING)
922 wait_for_completion_interruptible(&ch->close_wait);
923 #ifdef SERIAL_DO_RESTART
924 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
925 return (-EAGAIN);
926 else
927 return (-ERESTARTSYS);
928 #else
929 return (-EAGAIN);
930 #endif
933 * If non-blocking mode is set, then make the check up front
934 * and then exit.
936 if (filp->f_flags & O_NONBLOCK) {
937 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
938 return (0);
941 * Block waiting for the carrier detect and the line to become free
943 retval = 0;
944 add_wait_queue(&ch->open_wait, &wait);
945 pr_debug("block_til_ready before block: ttys%d, count = %d\n",
946 ch->port, ch->count);
947 spin_lock_irqsave(&moxa_lock, flags);
948 if (!tty_hung_up_p(filp))
949 ch->count--;
950 ch->blocked_open++;
951 spin_unlock_irqrestore(&moxa_lock, flags);
953 while (1) {
954 set_current_state(TASK_INTERRUPTIBLE);
955 if (tty_hung_up_p(filp) ||
956 !(ch->asyncflags & ASYNC_INITIALIZED)) {
957 #ifdef SERIAL_DO_RESTART
958 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
959 retval = -EAGAIN;
960 else
961 retval = -ERESTARTSYS;
962 #else
963 retval = -EAGAIN;
964 #endif
965 break;
967 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
968 MoxaPortDCDON(ch->port)))
969 break;
971 if (signal_pending(current)) {
972 retval = -ERESTARTSYS;
973 break;
975 schedule();
977 set_current_state(TASK_RUNNING);
978 remove_wait_queue(&ch->open_wait, &wait);
980 spin_lock_irqsave(&moxa_lock, flags);
981 if (!tty_hung_up_p(filp))
982 ch->count++;
983 ch->blocked_open--;
984 spin_unlock_irqrestore(&moxa_lock, flags);
985 pr_debug("block_til_ready after blocking: ttys%d, count = %d\n",
986 ch->port, ch->count);
987 if (retval)
988 return (retval);
989 /* FIXME: review to see if we need to use set_bit on these */
990 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
991 return 0;
994 static void moxa_setup_empty_event(struct tty_struct *tty)
996 struct moxa_port *ch = tty->driver_data;
997 unsigned long flags;
999 spin_lock_irqsave(&moxa_lock, flags);
1000 ch->statusflags |= EMPTYWAIT;
1001 mod_timer(&moxa_ports[ch->port].emptyTimer, jiffies + HZ);
1002 spin_unlock_irqrestore(&moxa_lock, flags);
1005 static void moxa_check_xmit_empty(unsigned long data)
1007 struct moxa_port *ch;
1009 ch = (struct moxa_port *) data;
1010 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1011 if (MoxaPortTxQueue(ch->port) == 0) {
1012 ch->statusflags &= ~EMPTYWAIT;
1013 tty_wakeup(ch->tty);
1014 return;
1016 mod_timer(&moxa_ports[ch->port].emptyTimer,
1017 round_jiffies(jiffies + HZ));
1018 } else
1019 ch->statusflags &= ~EMPTYWAIT;
1022 static void moxa_shut_down(struct moxa_port *ch)
1024 struct tty_struct *tp;
1026 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1027 return;
1029 tp = ch->tty;
1031 MoxaPortDisable(ch->port);
1034 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1036 if (tp->termios->c_cflag & HUPCL)
1037 MoxaPortLineCtrl(ch->port, 0, 0);
1039 ch->asyncflags &= ~ASYNC_INITIALIZED;
1042 static void moxa_receive_data(struct moxa_port *ch)
1044 struct tty_struct *tp;
1045 struct ktermios *ts;
1046 unsigned long flags;
1048 ts = NULL;
1049 tp = ch->tty;
1050 if (tp)
1051 ts = tp->termios;
1052 /**************************************************
1053 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1054 *****************************************************/
1055 if (!tp || !ts) {
1056 MoxaPortFlushData(ch->port, 0);
1057 return;
1059 spin_lock_irqsave(&moxa_lock, flags);
1060 MoxaPortReadData(ch->port, tp);
1061 spin_unlock_irqrestore(&moxa_lock, flags);
1062 tty_schedule_flip(tp);
1065 #define Magic_code 0x404
1068 * System Configuration
1071 * for C218 BIOS initialization
1073 #define C218_ConfBase 0x800
1074 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1075 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1076 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1077 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1078 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1079 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1080 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1081 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1082 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1083 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1085 #define C218_LoadBuf 0x0F00
1086 #define C218_KeyCode 0x218
1087 #define CP204J_KeyCode 0x204
1090 * for C320 BIOS initialization
1092 #define C320_ConfBase 0x800
1093 #define C320_LoadBuf 0x0f00
1094 #define STS_init 0x05 /* for C320_status */
1096 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1097 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1098 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1099 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1100 #define C320check_sum C320_ConfBase + 8 /* WORD */
1101 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1102 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1103 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1105 #define C320_KeyCode 0x320
1107 #define FixPage_addr 0x0000 /* starting addr of static page */
1108 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1109 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1110 #define Control_reg 0x1ff0 /* select page and reset control */
1111 #define HW_reset 0x80
1114 * Function Codes
1116 #define FC_CardReset 0x80
1117 #define FC_ChannelReset 1 /* C320 firmware not supported */
1118 #define FC_EnableCH 2
1119 #define FC_DisableCH 3
1120 #define FC_SetParam 4
1121 #define FC_SetMode 5
1122 #define FC_SetRate 6
1123 #define FC_LineControl 7
1124 #define FC_LineStatus 8
1125 #define FC_XmitControl 9
1126 #define FC_FlushQueue 10
1127 #define FC_SendBreak 11
1128 #define FC_StopBreak 12
1129 #define FC_LoopbackON 13
1130 #define FC_LoopbackOFF 14
1131 #define FC_ClrIrqTable 15
1132 #define FC_SendXon 16
1133 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1134 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1135 #define FC_SetBreakIrq 19
1136 #define FC_SetLineIrq 20
1137 #define FC_SetFlowCtl 21
1138 #define FC_GenIrq 22
1139 #define FC_InCD180 23
1140 #define FC_OutCD180 24
1141 #define FC_InUARTreg 23
1142 #define FC_OutUARTreg 24
1143 #define FC_SetXonXoff 25
1144 #define FC_OutCD180CCR 26
1145 #define FC_ExtIQueue 27
1146 #define FC_ExtOQueue 28
1147 #define FC_ClrLineIrq 29
1148 #define FC_HWFlowCtl 30
1149 #define FC_GetClockRate 35
1150 #define FC_SetBaud 36
1151 #define FC_SetDataMode 41
1152 #define FC_GetCCSR 43
1153 #define FC_GetDataError 45
1154 #define FC_RxControl 50
1155 #define FC_ImmSend 51
1156 #define FC_SetXonState 52
1157 #define FC_SetXoffState 53
1158 #define FC_SetRxFIFOTrig 54
1159 #define FC_SetTxFIFOCnt 55
1160 #define FC_UnixRate 56
1161 #define FC_UnixResetTimer 57
1163 #define RxFIFOTrig1 0
1164 #define RxFIFOTrig4 1
1165 #define RxFIFOTrig8 2
1166 #define RxFIFOTrig14 3
1169 * Dual-Ported RAM
1171 #define DRAM_global 0
1172 #define INT_data (DRAM_global + 0)
1173 #define Config_base (DRAM_global + 0x108)
1175 #define IRQindex (INT_data + 0)
1176 #define IRQpending (INT_data + 4)
1177 #define IRQtable (INT_data + 8)
1180 * Interrupt Status
1182 #define IntrRx 0x01 /* receiver data O.K. */
1183 #define IntrTx 0x02 /* transmit buffer empty */
1184 #define IntrFunc 0x04 /* function complete */
1185 #define IntrBreak 0x08 /* received break */
1186 #define IntrLine 0x10 /* line status change
1187 for transmitter */
1188 #define IntrIntr 0x20 /* received INTR code */
1189 #define IntrQuit 0x40 /* received QUIT code */
1190 #define IntrEOF 0x80 /* received EOF code */
1192 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1193 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1195 #define Magic_no (Config_base + 0)
1196 #define Card_model_no (Config_base + 2)
1197 #define Total_ports (Config_base + 4)
1198 #define Module_cnt (Config_base + 8)
1199 #define Module_no (Config_base + 10)
1200 #define Timer_10ms (Config_base + 14)
1201 #define Disable_IRQ (Config_base + 20)
1202 #define TMS320_PORT1 (Config_base + 22)
1203 #define TMS320_PORT2 (Config_base + 24)
1204 #define TMS320_CLOCK (Config_base + 26)
1207 * DATA BUFFER in DRAM
1209 #define Extern_table 0x400 /* Base address of the external table
1210 (24 words * 64) total 3K bytes
1211 (24 words * 128) total 6K bytes */
1212 #define Extern_size 0x60 /* 96 bytes */
1213 #define RXrptr 0x00 /* read pointer for RX buffer */
1214 #define RXwptr 0x02 /* write pointer for RX buffer */
1215 #define TXrptr 0x04 /* read pointer for TX buffer */
1216 #define TXwptr 0x06 /* write pointer for TX buffer */
1217 #define HostStat 0x08 /* IRQ flag and general flag */
1218 #define FlagStat 0x0A
1219 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1220 /* x x x x | | | | */
1221 /* | | | + CTS flow */
1222 /* | | +--- RTS flow */
1223 /* | +------ TX Xon/Xoff */
1224 /* +--------- RX Xon/Xoff */
1225 #define Break_cnt 0x0E /* received break count */
1226 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1227 #define RX_mask 0x12
1228 #define TX_mask 0x14
1229 #define Ofs_rxb 0x16
1230 #define Ofs_txb 0x18
1231 #define Page_rxb 0x1A
1232 #define Page_txb 0x1C
1233 #define EndPage_rxb 0x1E
1234 #define EndPage_txb 0x20
1235 #define Data_error 0x22
1236 #define RxTrigger 0x28
1237 #define TxTrigger 0x2a
1239 #define rRXwptr 0x34
1240 #define Low_water 0x36
1242 #define FuncCode 0x40
1243 #define FuncArg 0x42
1244 #define FuncArg1 0x44
1246 #define C218rx_size 0x2000 /* 8K bytes */
1247 #define C218tx_size 0x8000 /* 32K bytes */
1249 #define C218rx_mask (C218rx_size - 1)
1250 #define C218tx_mask (C218tx_size - 1)
1252 #define C320p8rx_size 0x2000
1253 #define C320p8tx_size 0x8000
1254 #define C320p8rx_mask (C320p8rx_size - 1)
1255 #define C320p8tx_mask (C320p8tx_size - 1)
1257 #define C320p16rx_size 0x2000
1258 #define C320p16tx_size 0x4000
1259 #define C320p16rx_mask (C320p16rx_size - 1)
1260 #define C320p16tx_mask (C320p16tx_size - 1)
1262 #define C320p24rx_size 0x2000
1263 #define C320p24tx_size 0x2000
1264 #define C320p24rx_mask (C320p24rx_size - 1)
1265 #define C320p24tx_mask (C320p24tx_size - 1)
1267 #define C320p32rx_size 0x1000
1268 #define C320p32tx_size 0x1000
1269 #define C320p32rx_mask (C320p32rx_size - 1)
1270 #define C320p32tx_mask (C320p32tx_size - 1)
1272 #define Page_size 0x2000
1273 #define Page_mask (Page_size - 1)
1274 #define C218rx_spage 3
1275 #define C218tx_spage 4
1276 #define C218rx_pageno 1
1277 #define C218tx_pageno 4
1278 #define C218buf_pageno 5
1280 #define C320p8rx_spage 3
1281 #define C320p8tx_spage 4
1282 #define C320p8rx_pgno 1
1283 #define C320p8tx_pgno 4
1284 #define C320p8buf_pgno 5
1286 #define C320p16rx_spage 3
1287 #define C320p16tx_spage 4
1288 #define C320p16rx_pgno 1
1289 #define C320p16tx_pgno 2
1290 #define C320p16buf_pgno 3
1292 #define C320p24rx_spage 3
1293 #define C320p24tx_spage 4
1294 #define C320p24rx_pgno 1
1295 #define C320p24tx_pgno 1
1296 #define C320p24buf_pgno 2
1298 #define C320p32rx_spage 3
1299 #define C320p32tx_ofs C320p32rx_size
1300 #define C320p32tx_spage 3
1301 #define C320p32buf_pgno 1
1304 * Host Status
1306 #define WakeupRx 0x01
1307 #define WakeupTx 0x02
1308 #define WakeupBreak 0x08
1309 #define WakeupLine 0x10
1310 #define WakeupIntr 0x20
1311 #define WakeupQuit 0x40
1312 #define WakeupEOF 0x80 /* used in VTIME control */
1313 #define WakeupRxTrigger 0x100
1314 #define WakeupTxTrigger 0x200
1316 * Flag status
1318 #define Rx_over 0x01
1319 #define Xoff_state 0x02
1320 #define Tx_flowOff 0x04
1321 #define Tx_enable 0x08
1322 #define CTS_state 0x10
1323 #define DSR_state 0x20
1324 #define DCD_state 0x80
1326 * FlowControl
1328 #define CTS_FlowCtl 1
1329 #define RTS_FlowCtl 2
1330 #define Tx_FlowCtl 4
1331 #define Rx_FlowCtl 8
1332 #define IXM_IXANY 0x10
1334 #define LowWater 128
1336 #define DTR_ON 1
1337 #define RTS_ON 2
1338 #define CTS_ON 1
1339 #define DSR_ON 2
1340 #define DCD_ON 8
1342 /* mode definition */
1343 #define MX_CS8 0x03
1344 #define MX_CS7 0x02
1345 #define MX_CS6 0x01
1346 #define MX_CS5 0x00
1348 #define MX_STOP1 0x00
1349 #define MX_STOP15 0x04
1350 #define MX_STOP2 0x08
1352 #define MX_PARNONE 0x00
1353 #define MX_PAREVEN 0x40
1354 #define MX_PARODD 0xC0
1357 * Query
1360 struct mon_str {
1361 int tick;
1362 int rxcnt[MAX_PORTS];
1363 int txcnt[MAX_PORTS];
1366 #define DCD_changed 0x01
1367 #define DCD_oldstate 0x80
1369 static unsigned char moxaBuff[10240];
1370 static int moxaLowWaterChk;
1371 static int moxaCard;
1372 static struct mon_str moxaLog;
1373 static int moxaFuncTout = HZ / 2;
1375 static void moxafunc(void __iomem *, int, ushort);
1376 static void moxa_wait_finish(void __iomem *);
1377 static void moxa_low_water_check(void __iomem *);
1378 static int moxaloadbios(int, unsigned char __user *, int);
1379 static int moxafindcard(int);
1380 static int moxaload320b(int, unsigned char __user *, int);
1381 static int moxaloadcode(int, unsigned char __user *, int);
1382 static int moxaloadc218(int, void __iomem *, int);
1383 static int moxaloadc320(int, void __iomem *, int, int *);
1385 /*****************************************************************************
1386 * Driver level functions: *
1387 * 1. MoxaDriverInit(void); *
1388 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1389 * 3. MoxaDriverPoll(void); *
1390 *****************************************************************************/
1391 void MoxaDriverInit(void)
1393 struct moxa_port *p;
1394 unsigned int i;
1396 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1397 moxaCard = 0;
1398 moxaLog.tick = 0;
1399 moxaLowWaterChk = 0;
1400 for (i = 0; i < MAX_PORTS; i++) {
1401 p = &moxa_ports[i];
1402 p->chkPort = 0;
1403 p->lowChkFlag = 0;
1404 p->lineCtrl = 0;
1405 moxaLog.rxcnt[i] = 0;
1406 moxaLog.txcnt[i] = 0;
1410 #define MOXA 0x400
1411 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1412 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1413 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1414 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1415 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1416 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1417 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1418 #define MOXA_GETDATACOUNT (MOXA + 23)
1419 #define MOXA_GET_IOQUEUE (MOXA + 27)
1420 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1421 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1422 #define MOXA_GET_MAJOR (MOXA + 63)
1423 #define MOXA_GET_CUMAJOR (MOXA + 64)
1424 #define MOXA_GETMSTATUS (MOXA + 65)
1426 struct dl_str {
1427 char __user *buf;
1428 int len;
1429 int cardno;
1432 static struct dl_str dltmp;
1434 void MoxaPortFlushData(int port, int mode)
1436 void __iomem *ofsAddr;
1437 if ((mode < 0) || (mode > 2))
1438 return;
1439 ofsAddr = moxa_ports[port].tableAddr;
1440 moxafunc(ofsAddr, FC_FlushQueue, mode);
1441 if (mode != 1) {
1442 moxa_ports[port].lowChkFlag = 0;
1443 moxa_low_water_check(ofsAddr);
1447 int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1449 int i;
1450 int status;
1451 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1452 void __user *argp = (void __user *)arg;
1454 if (port == MAX_PORTS) {
1455 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1456 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1457 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1458 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1459 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1460 return (-EINVAL);
1462 switch (cmd) {
1463 case MOXA_GET_CONF:
1464 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS *
1465 sizeof(struct moxa_board_conf)))
1466 return -EFAULT;
1467 return (0);
1468 case MOXA_INIT_DRIVER:
1469 if ((int) arg == 0x404)
1470 MoxaDriverInit();
1471 return (0);
1472 case MOXA_GETDATACOUNT:
1473 moxaLog.tick = jiffies;
1474 if(copy_to_user(argp, &moxaLog, sizeof(struct mon_str)))
1475 return -EFAULT;
1476 return (0);
1477 case MOXA_FLUSH_QUEUE:
1478 MoxaPortFlushData(port, arg);
1479 return (0);
1480 case MOXA_GET_IOQUEUE: {
1481 struct moxaq_str __user *argm = argp;
1482 struct moxaq_str tmp;
1484 for (i = 0; i < MAX_PORTS; i++, argm++) {
1485 memset(&tmp, 0, sizeof(tmp));
1486 if (moxa_ports[i].chkPort) {
1487 tmp.inq = MoxaPortRxQueue(i);
1488 tmp.outq = MoxaPortTxQueue(i);
1490 if (copy_to_user(argm, &tmp, sizeof(tmp)))
1491 return -EFAULT;
1493 return (0);
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)))
1502 return -EFAULT;
1503 return 0;
1504 case MOXA_GET_CUMAJOR:
1505 i = 0;
1506 if(copy_to_user(argp, &i, sizeof(int)))
1507 return -EFAULT;
1508 return 0;
1509 case MOXA_GETMSTATUS: {
1510 struct mxser_mstatus __user *argm = argp;
1511 struct mxser_mstatus tmp;
1512 struct moxa_port *p;
1514 for (i = 0; i < MAX_PORTS; i++, argm++) {
1515 p = &moxa_ports[i];
1516 memset(&tmp, 0, sizeof(tmp));
1517 if (!p->chkPort) {
1518 goto copy;
1519 } else {
1520 status = MoxaPortLineStatus(p->port);
1521 if (status & 1)
1522 tmp.cts = 1;
1523 if (status & 2)
1524 tmp.dsr = 1;
1525 if (status & 4)
1526 tmp.dcd = 1;
1529 if (!p->tty || !p->tty->termios)
1530 tmp.cflag = p->cflag;
1531 else
1532 tmp.cflag = p->tty->termios->c_cflag;
1533 copy:
1534 if (copy_to_user(argm, &tmp, sizeof(tmp)))
1535 return -EFAULT;
1537 return 0;
1538 } default:
1539 return (-ENOIOCTLCMD);
1540 case MOXA_LOAD_BIOS:
1541 case MOXA_FIND_BOARD:
1542 case MOXA_LOAD_C320B:
1543 case MOXA_LOAD_CODE:
1544 if (!capable(CAP_SYS_RAWIO))
1545 return -EPERM;
1546 break;
1549 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1550 return -EFAULT;
1551 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS || dltmp.len < 0)
1552 return -EINVAL;
1554 switch(cmd)
1556 case MOXA_LOAD_BIOS:
1557 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1558 return (i);
1559 case MOXA_FIND_BOARD:
1560 return moxafindcard(dltmp.cardno);
1561 case MOXA_LOAD_C320B:
1562 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1563 default: /* to keep gcc happy */
1564 return (0);
1565 case MOXA_LOAD_CODE:
1566 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1567 if (i == -1)
1568 return (-EFAULT);
1569 return (i);
1574 int MoxaDriverPoll(void)
1576 struct moxa_board_conf *brd;
1577 register ushort temp;
1578 register int card;
1579 void __iomem *ofsAddr;
1580 void __iomem *ip;
1581 int port, p, ports;
1583 if (moxaCard == 0)
1584 return (-1);
1585 for (card = 0; card < MAX_BOARDS; card++) {
1586 brd = &moxa_boards[card];
1587 if (brd->loadstat == 0)
1588 continue;
1589 if ((ports = brd->numPorts) == 0)
1590 continue;
1591 if (readb(brd->intPend) == 0xff) {
1592 ip = brd->intTable + readb(brd->intNdx);
1593 p = card * MAX_PORTS_PER_BOARD;
1594 ports <<= 1;
1595 for (port = 0; port < ports; port += 2, p++) {
1596 if ((temp = readw(ip + port)) != 0) {
1597 writew(0, ip + port);
1598 ofsAddr = moxa_ports[p].tableAddr;
1599 if (temp & IntrTx)
1600 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1601 if (temp & IntrBreak) {
1602 moxa_ports[p].breakCnt++;
1604 if (temp & IntrLine) {
1605 if (readb(ofsAddr + FlagStat) & DCD_state) {
1606 if ((moxa_ports[p].DCDState & DCD_oldstate) == 0)
1607 moxa_ports[p].DCDState = (DCD_oldstate |
1608 DCD_changed);
1609 } else {
1610 if (moxa_ports[p].DCDState & DCD_oldstate)
1611 moxa_ports[p].DCDState = DCD_changed;
1616 writeb(0, brd->intPend);
1618 if (moxaLowWaterChk) {
1619 p = card * MAX_PORTS_PER_BOARD;
1620 for (port = 0; port < ports; port++, p++) {
1621 if (moxa_ports[p].lowChkFlag) {
1622 moxa_ports[p].lowChkFlag = 0;
1623 ofsAddr = moxa_ports[p].tableAddr;
1624 moxa_low_water_check(ofsAddr);
1629 moxaLowWaterChk = 0;
1630 return (0);
1633 /*****************************************************************************
1634 * Card level function: *
1635 * 1. MoxaPortsOfCard(int cardno); *
1636 *****************************************************************************/
1637 int MoxaPortsOfCard(int cardno)
1640 if (moxa_boards[cardno].boardType == 0)
1641 return (0);
1642 return (moxa_boards[cardno].numPorts);
1645 /*****************************************************************************
1646 * Port level functions: *
1647 * 1. MoxaPortIsValid(int port); *
1648 * 2. MoxaPortEnable(int port); *
1649 * 3. MoxaPortDisable(int port); *
1650 * 4. MoxaPortGetMaxBaud(int port); *
1651 * 6. MoxaPortSetBaud(int port, long baud); *
1652 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1653 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1654 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1655 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1656 * 12. MoxaPortLineStatus(int port); *
1657 * 13. MoxaPortDCDChange(int port); *
1658 * 14. MoxaPortDCDON(int port); *
1659 * 15. MoxaPortFlushData(int port, int mode); *
1660 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1661 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1662 * 20. MoxaPortTxQueue(int port); *
1663 * 21. MoxaPortTxFree(int port); *
1664 * 22. MoxaPortRxQueue(int port); *
1665 * 24. MoxaPortTxDisable(int port); *
1666 * 25. MoxaPortTxEnable(int port); *
1667 * 27. MoxaPortResetBrkCnt(int port); *
1668 * 30. MoxaPortSendBreak(int port, int ticks); *
1669 *****************************************************************************/
1671 * Moxa Port Number Description:
1673 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1674 * the port number using in MOXA driver functions will be 0 to 31 for
1675 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1676 * to 127 for fourth. For example, if you setup three MOXA boards,
1677 * first board is C218, second board is C320-16 and third board is
1678 * C320-32. The port number of first board (C218 - 8 ports) is from
1679 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1680 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1681 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1682 * 127 will be invalid.
1685 * Moxa Functions Description:
1687 * Function 1: Driver initialization routine, this routine must be
1688 * called when initialized driver.
1689 * Syntax:
1690 * void MoxaDriverInit();
1693 * Function 2: Moxa driver private IOCTL command processing.
1694 * Syntax:
1695 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1697 * unsigned int cmd : IOCTL command
1698 * unsigned long arg : IOCTL argument
1699 * int port : port number (0 - 127)
1701 * return: 0 (OK)
1702 * -EINVAL
1703 * -ENOIOCTLCMD
1706 * Function 3: Moxa driver polling process routine.
1707 * Syntax:
1708 * int MoxaDriverPoll(void);
1710 * return: 0 ; polling O.K.
1711 * -1 : no any Moxa card.
1714 * Function 4: Get the ports of this card.
1715 * Syntax:
1716 * int MoxaPortsOfCard(int cardno);
1718 * int cardno : card number (0 - 3)
1720 * return: 0 : this card is invalid
1721 * 8/16/24/32
1724 * Function 5: Check this port is valid or invalid
1725 * Syntax:
1726 * int MoxaPortIsValid(int port);
1727 * int port : port number (0 - 127, ref port description)
1729 * return: 0 : this port is invalid
1730 * 1 : this port is valid
1733 * Function 6: Enable this port to start Tx/Rx data.
1734 * Syntax:
1735 * void MoxaPortEnable(int port);
1736 * int port : port number (0 - 127)
1739 * Function 7: Disable this port
1740 * Syntax:
1741 * void MoxaPortDisable(int port);
1742 * int port : port number (0 - 127)
1745 * Function 8: Get the maximun available baud rate of this port.
1746 * Syntax:
1747 * long MoxaPortGetMaxBaud(int port);
1748 * int port : port number (0 - 127)
1750 * return: 0 : this port is invalid
1751 * 38400/57600/115200 bps
1754 * Function 10: Setting baud rate of this port.
1755 * Syntax:
1756 * long MoxaPortSetBaud(int port, long baud);
1757 * int port : port number (0 - 127)
1758 * long baud : baud rate (50 - 115200)
1760 * return: 0 : this port is invalid or baud < 50
1761 * 50 - 115200 : the real baud rate set to the port, if
1762 * the argument baud is large than maximun
1763 * available baud rate, the real setting
1764 * baud rate will be the maximun baud rate.
1767 * Function 12: Configure the port.
1768 * Syntax:
1769 * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud);
1770 * int port : port number (0 - 127)
1771 * struct ktermios * termio : termio structure pointer
1772 * speed_t baud : baud rate
1774 * return: -1 : this port is invalid or termio == NULL
1775 * 0 : setting O.K.
1778 * Function 13: Get the DTR/RTS state of this port.
1779 * Syntax:
1780 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1781 * int port : port number (0 - 127)
1782 * int * dtrState : pointer to INT to receive the current DTR
1783 * state. (if NULL, this function will not
1784 * write to this address)
1785 * int * rtsState : pointer to INT to receive the current RTS
1786 * state. (if NULL, this function will not
1787 * write to this address)
1789 * return: -1 : this port is invalid
1790 * 0 : O.K.
1793 * Function 14: Setting the DTR/RTS output state of this port.
1794 * Syntax:
1795 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1796 * int port : port number (0 - 127)
1797 * int dtrState : DTR output state (0: off, 1: on)
1798 * int rtsState : RTS output state (0: off, 1: on)
1801 * Function 15: Setting the flow control of this port.
1802 * Syntax:
1803 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1804 * int txFlow,int xany);
1805 * int port : port number (0 - 127)
1806 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1807 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1808 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1809 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1810 * int xany : S/W XANY flow control (0: no, 1: yes)
1813 * Function 16: Get ths line status of this port
1814 * Syntax:
1815 * int MoxaPortLineStatus(int port);
1816 * int port : port number (0 - 127)
1818 * return: Bit 0 - CTS state (0: off, 1: on)
1819 * Bit 1 - DSR state (0: off, 1: on)
1820 * Bit 2 - DCD state (0: off, 1: on)
1823 * Function 17: Check the DCD state has changed since the last read
1824 * of this function.
1825 * Syntax:
1826 * int MoxaPortDCDChange(int port);
1827 * int port : port number (0 - 127)
1829 * return: 0 : no changed
1830 * 1 : DCD has changed
1833 * Function 18: Check ths current DCD state is ON or not.
1834 * Syntax:
1835 * int MoxaPortDCDON(int port);
1836 * int port : port number (0 - 127)
1838 * return: 0 : DCD off
1839 * 1 : DCD on
1842 * Function 19: Flush the Rx/Tx buffer data of this port.
1843 * Syntax:
1844 * void MoxaPortFlushData(int port, int mode);
1845 * int port : port number (0 - 127)
1846 * int mode
1847 * 0 : flush the Rx buffer
1848 * 1 : flush the Tx buffer
1849 * 2 : flush the Rx and Tx buffer
1852 * Function 20: Write data.
1853 * Syntax:
1854 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
1855 * int port : port number (0 - 127)
1856 * unsigned char * buffer : pointer to write data buffer.
1857 * int length : write data length
1859 * return: 0 - length : real write data length
1862 * Function 21: Read data.
1863 * Syntax:
1864 * int MoxaPortReadData(int port, struct tty_struct *tty);
1865 * int port : port number (0 - 127)
1866 * struct tty_struct *tty : tty for data
1868 * return: 0 - length : real read data length
1871 * Function 24: Get the Tx buffer current queued data bytes
1872 * Syntax:
1873 * int MoxaPortTxQueue(int port);
1874 * int port : port number (0 - 127)
1876 * return: .. : Tx buffer current queued data bytes
1879 * Function 25: Get the Tx buffer current free space
1880 * Syntax:
1881 * int MoxaPortTxFree(int port);
1882 * int port : port number (0 - 127)
1884 * return: .. : Tx buffer current free space
1887 * Function 26: Get the Rx buffer current queued data bytes
1888 * Syntax:
1889 * int MoxaPortRxQueue(int port);
1890 * int port : port number (0 - 127)
1892 * return: .. : Rx buffer current queued data bytes
1895 * Function 28: Disable port data transmission.
1896 * Syntax:
1897 * void MoxaPortTxDisable(int port);
1898 * int port : port number (0 - 127)
1901 * Function 29: Enable port data transmission.
1902 * Syntax:
1903 * void MoxaPortTxEnable(int port);
1904 * int port : port number (0 - 127)
1907 * Function 31: Get the received BREAK signal count and reset it.
1908 * Syntax:
1909 * int MoxaPortResetBrkCnt(int port);
1910 * int port : port number (0 - 127)
1912 * return: 0 - .. : BREAK signal count
1915 * Function 34: Send out a BREAK signal.
1916 * Syntax:
1917 * void MoxaPortSendBreak(int port, int ms100);
1918 * int port : port number (0 - 127)
1919 * int ms100 : break signal time interval.
1920 * unit: 100 mini-second. if ms100 == 0, it will
1921 * send out a about 250 ms BREAK signal.
1924 int MoxaPortIsValid(int port)
1927 if (moxaCard == 0)
1928 return (0);
1929 if (moxa_ports[port].chkPort == 0)
1930 return (0);
1931 return (1);
1934 void MoxaPortEnable(int port)
1936 void __iomem *ofsAddr;
1937 int MoxaPortLineStatus(int);
1938 short lowwater = 512;
1940 ofsAddr = moxa_ports[port].tableAddr;
1941 writew(lowwater, ofsAddr + Low_water);
1942 moxa_ports[port].breakCnt = 0;
1943 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
1944 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
1945 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
1946 } else {
1947 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
1950 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
1951 moxafunc(ofsAddr, FC_FlushQueue, 2);
1953 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
1954 MoxaPortLineStatus(port);
1957 void MoxaPortDisable(int port)
1959 void __iomem *ofsAddr = moxa_ports[port].tableAddr;
1961 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
1962 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
1963 writew(0, ofsAddr + HostStat);
1964 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
1967 long MoxaPortGetMaxBaud(int port)
1969 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
1970 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
1971 return (460800L);
1972 else
1973 return (921600L);
1977 long MoxaPortSetBaud(int port, long baud)
1979 void __iomem *ofsAddr;
1980 long max, clock;
1981 unsigned int val;
1983 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
1984 return (0);
1985 ofsAddr = moxa_ports[port].tableAddr;
1986 if (baud > max)
1987 baud = max;
1988 if (max == 38400L)
1989 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
1990 else if (max == 57600L)
1991 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
1992 else
1993 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
1994 val = clock / baud;
1995 moxafunc(ofsAddr, FC_SetBaud, val);
1996 baud = clock / val;
1997 moxa_ports[port].curBaud = baud;
1998 return (baud);
2001 int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud)
2003 void __iomem *ofsAddr;
2004 tcflag_t cflag;
2005 tcflag_t mode = 0;
2007 if (moxa_ports[port].chkPort == 0 || termio == 0)
2008 return (-1);
2009 ofsAddr = moxa_ports[port].tableAddr;
2010 cflag = termio->c_cflag; /* termio->c_cflag */
2012 mode = termio->c_cflag & CSIZE;
2013 if (mode == CS5)
2014 mode = MX_CS5;
2015 else if (mode == CS6)
2016 mode = MX_CS6;
2017 else if (mode == CS7)
2018 mode = MX_CS7;
2019 else if (mode == CS8)
2020 mode = MX_CS8;
2022 if (termio->c_cflag & CSTOPB) {
2023 if (mode == MX_CS5)
2024 mode |= MX_STOP15;
2025 else
2026 mode |= MX_STOP2;
2027 } else
2028 mode |= MX_STOP1;
2030 if (termio->c_cflag & PARENB) {
2031 if (termio->c_cflag & PARODD)
2032 mode |= MX_PARODD;
2033 else
2034 mode |= MX_PAREVEN;
2035 } else
2036 mode |= MX_PARNONE;
2038 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2040 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2041 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2042 if (baud >= 921600L)
2043 return (-1);
2045 baud = MoxaPortSetBaud(port, baud);
2047 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2048 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2049 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2050 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2051 moxa_wait_finish(ofsAddr);
2054 return (baud);
2057 int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2060 if (!MoxaPortIsValid(port))
2061 return (-1);
2062 if (dtrState) {
2063 if (moxa_ports[port].lineCtrl & DTR_ON)
2064 *dtrState = 1;
2065 else
2066 *dtrState = 0;
2068 if (rtsState) {
2069 if (moxa_ports[port].lineCtrl & RTS_ON)
2070 *rtsState = 1;
2071 else
2072 *rtsState = 0;
2074 return (0);
2077 void MoxaPortLineCtrl(int port, int dtr, int rts)
2079 void __iomem *ofsAddr;
2080 int mode;
2082 ofsAddr = moxa_ports[port].tableAddr;
2083 mode = 0;
2084 if (dtr)
2085 mode |= DTR_ON;
2086 if (rts)
2087 mode |= RTS_ON;
2088 moxa_ports[port].lineCtrl = mode;
2089 moxafunc(ofsAddr, FC_LineControl, mode);
2092 void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2094 void __iomem *ofsAddr;
2095 int mode;
2097 ofsAddr = moxa_ports[port].tableAddr;
2098 mode = 0;
2099 if (rts)
2100 mode |= RTS_FlowCtl;
2101 if (cts)
2102 mode |= CTS_FlowCtl;
2103 if (txflow)
2104 mode |= Tx_FlowCtl;
2105 if (rxflow)
2106 mode |= Rx_FlowCtl;
2107 if (txany)
2108 mode |= IXM_IXANY;
2109 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2112 int MoxaPortLineStatus(int port)
2114 void __iomem *ofsAddr;
2115 int val;
2117 ofsAddr = moxa_ports[port].tableAddr;
2118 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2119 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2120 moxafunc(ofsAddr, FC_LineStatus, 0);
2121 val = readw(ofsAddr + FuncArg);
2122 } else {
2123 val = readw(ofsAddr + FlagStat) >> 4;
2125 val &= 0x0B;
2126 if (val & 8) {
2127 val |= 4;
2128 if ((moxa_ports[port].DCDState & DCD_oldstate) == 0)
2129 moxa_ports[port].DCDState = (DCD_oldstate | DCD_changed);
2130 } else {
2131 if (moxa_ports[port].DCDState & DCD_oldstate)
2132 moxa_ports[port].DCDState = DCD_changed;
2134 val &= 7;
2135 return (val);
2138 int MoxaPortDCDChange(int port)
2140 int n;
2142 if (moxa_ports[port].chkPort == 0)
2143 return (0);
2144 n = moxa_ports[port].DCDState;
2145 moxa_ports[port].DCDState &= ~DCD_changed;
2146 n &= DCD_changed;
2147 return (n);
2150 int MoxaPortDCDON(int port)
2152 int n;
2154 if (moxa_ports[port].chkPort == 0)
2155 return (0);
2156 if (moxa_ports[port].DCDState & DCD_oldstate)
2157 n = 1;
2158 else
2159 n = 0;
2160 return (n);
2163 int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2165 int c, total, i;
2166 ushort tail;
2167 int cnt;
2168 ushort head, tx_mask, spage, epage;
2169 ushort pageno, pageofs, bufhead;
2170 void __iomem *baseAddr, *ofsAddr, *ofs;
2172 ofsAddr = moxa_ports[port].tableAddr;
2173 baseAddr = moxa_boards[port / MAX_PORTS_PER_BOARD].basemem;
2174 tx_mask = readw(ofsAddr + TX_mask);
2175 spage = readw(ofsAddr + Page_txb);
2176 epage = readw(ofsAddr + EndPage_txb);
2177 tail = readw(ofsAddr + TXwptr);
2178 head = readw(ofsAddr + TXrptr);
2179 c = (head > tail) ? (head - tail - 1)
2180 : (head - tail + tx_mask);
2181 if (c > len)
2182 c = len;
2183 moxaLog.txcnt[port] += c;
2184 total = c;
2185 if (spage == epage) {
2186 bufhead = readw(ofsAddr + Ofs_txb);
2187 writew(spage, baseAddr + Control_reg);
2188 while (c > 0) {
2189 if (head > tail)
2190 len = head - tail - 1;
2191 else
2192 len = tx_mask + 1 - tail;
2193 len = (c > len) ? len : c;
2194 ofs = baseAddr + DynPage_addr + bufhead + tail;
2195 for (i = 0; i < len; i++)
2196 writeb(*buffer++, ofs + i);
2197 tail = (tail + len) & tx_mask;
2198 c -= len;
2200 writew(tail, ofsAddr + TXwptr);
2201 } else {
2202 len = c;
2203 pageno = spage + (tail >> 13);
2204 pageofs = tail & Page_mask;
2205 do {
2206 cnt = Page_size - pageofs;
2207 if (cnt > c)
2208 cnt = c;
2209 c -= cnt;
2210 writeb(pageno, baseAddr + Control_reg);
2211 ofs = baseAddr + DynPage_addr + pageofs;
2212 for (i = 0; i < cnt; i++)
2213 writeb(*buffer++, ofs + i);
2214 if (c == 0) {
2215 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2216 break;
2218 if (++pageno == epage)
2219 pageno = spage;
2220 pageofs = 0;
2221 } while (1);
2223 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2224 return (total);
2227 int MoxaPortReadData(int port, struct tty_struct *tty)
2229 register ushort head, pageofs;
2230 int i, count, cnt, len, total, remain;
2231 ushort tail, rx_mask, spage, epage;
2232 ushort pageno, bufhead;
2233 void __iomem *baseAddr, *ofsAddr, *ofs;
2235 ofsAddr = moxa_ports[port].tableAddr;
2236 baseAddr = moxa_boards[port / MAX_PORTS_PER_BOARD].basemem;
2237 head = readw(ofsAddr + RXrptr);
2238 tail = readw(ofsAddr + RXwptr);
2239 rx_mask = readw(ofsAddr + RX_mask);
2240 spage = readw(ofsAddr + Page_rxb);
2241 epage = readw(ofsAddr + EndPage_rxb);
2242 count = (tail >= head) ? (tail - head)
2243 : (tail - head + rx_mask + 1);
2244 if (count == 0)
2245 return 0;
2247 total = count;
2248 remain = count - total;
2249 moxaLog.rxcnt[port] += total;
2250 count = total;
2251 if (spage == epage) {
2252 bufhead = readw(ofsAddr + Ofs_rxb);
2253 writew(spage, baseAddr + Control_reg);
2254 while (count > 0) {
2255 if (tail >= head)
2256 len = tail - head;
2257 else
2258 len = rx_mask + 1 - head;
2259 len = (count > len) ? len : count;
2260 ofs = baseAddr + DynPage_addr + bufhead + head;
2261 for (i = 0; i < len; i++)
2262 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2263 head = (head + len) & rx_mask;
2264 count -= len;
2266 writew(head, ofsAddr + RXrptr);
2267 } else {
2268 len = count;
2269 pageno = spage + (head >> 13);
2270 pageofs = head & Page_mask;
2271 do {
2272 cnt = Page_size - pageofs;
2273 if (cnt > count)
2274 cnt = count;
2275 count -= cnt;
2276 writew(pageno, baseAddr + Control_reg);
2277 ofs = baseAddr + DynPage_addr + pageofs;
2278 for (i = 0; i < cnt; i++)
2279 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2280 if (count == 0) {
2281 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2282 break;
2284 if (++pageno == epage)
2285 pageno = spage;
2286 pageofs = 0;
2287 } while (1);
2289 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2290 moxaLowWaterChk = 1;
2291 moxa_ports[port].lowChkFlag = 1;
2293 return (total);
2297 int MoxaPortTxQueue(int port)
2299 void __iomem *ofsAddr;
2300 ushort rptr, wptr, mask;
2301 int len;
2303 ofsAddr = moxa_ports[port].tableAddr;
2304 rptr = readw(ofsAddr + TXrptr);
2305 wptr = readw(ofsAddr + TXwptr);
2306 mask = readw(ofsAddr + TX_mask);
2307 len = (wptr - rptr) & mask;
2308 return (len);
2311 int MoxaPortTxFree(int port)
2313 void __iomem *ofsAddr;
2314 ushort rptr, wptr, mask;
2315 int len;
2317 ofsAddr = moxa_ports[port].tableAddr;
2318 rptr = readw(ofsAddr + TXrptr);
2319 wptr = readw(ofsAddr + TXwptr);
2320 mask = readw(ofsAddr + TX_mask);
2321 len = mask - ((wptr - rptr) & mask);
2322 return (len);
2325 int MoxaPortRxQueue(int port)
2327 void __iomem *ofsAddr;
2328 ushort rptr, wptr, mask;
2329 int len;
2331 ofsAddr = moxa_ports[port].tableAddr;
2332 rptr = readw(ofsAddr + RXrptr);
2333 wptr = readw(ofsAddr + RXwptr);
2334 mask = readw(ofsAddr + RX_mask);
2335 len = (wptr - rptr) & mask;
2336 return (len);
2340 void MoxaPortTxDisable(int port)
2342 void __iomem *ofsAddr;
2344 ofsAddr = moxa_ports[port].tableAddr;
2345 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2348 void MoxaPortTxEnable(int port)
2350 void __iomem *ofsAddr;
2352 ofsAddr = moxa_ports[port].tableAddr;
2353 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2357 int MoxaPortResetBrkCnt(int port)
2359 ushort cnt;
2360 cnt = moxa_ports[port].breakCnt;
2361 moxa_ports[port].breakCnt = 0;
2362 return (cnt);
2366 void MoxaPortSendBreak(int port, int ms100)
2368 void __iomem *ofsAddr;
2370 ofsAddr = moxa_ports[port].tableAddr;
2371 if (ms100) {
2372 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2373 msleep(ms100 * 10);
2374 } else {
2375 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2376 msleep(250);
2378 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2381 static int moxa_get_serial_info(struct moxa_port *info,
2382 struct serial_struct __user *retinfo)
2384 struct serial_struct tmp;
2386 memset(&tmp, 0, sizeof(tmp));
2387 tmp.type = info->type;
2388 tmp.line = info->port;
2389 tmp.port = 0;
2390 tmp.irq = 0;
2391 tmp.flags = info->asyncflags;
2392 tmp.baud_base = 921600;
2393 tmp.close_delay = info->close_delay;
2394 tmp.closing_wait = info->closing_wait;
2395 tmp.custom_divisor = 0;
2396 tmp.hub6 = 0;
2397 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2398 return -EFAULT;
2399 return (0);
2403 static int moxa_set_serial_info(struct moxa_port *info,
2404 struct serial_struct __user *new_info)
2406 struct serial_struct new_serial;
2408 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2409 return -EFAULT;
2411 if ((new_serial.irq != 0) ||
2412 (new_serial.port != 0) ||
2413 // (new_serial.type != info->type) ||
2414 (new_serial.custom_divisor != 0) ||
2415 (new_serial.baud_base != 921600))
2416 return (-EPERM);
2418 if (!capable(CAP_SYS_ADMIN)) {
2419 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2420 (info->asyncflags & ~ASYNC_USR_MASK)))
2421 return (-EPERM);
2422 } else {
2423 info->close_delay = new_serial.close_delay * HZ / 100;
2424 info->closing_wait = new_serial.closing_wait * HZ / 100;
2427 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2428 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2430 if (new_serial.type == PORT_16550A) {
2431 MoxaSetFifo(info->port, 1);
2432 } else {
2433 MoxaSetFifo(info->port, 0);
2436 info->type = new_serial.type;
2437 return (0);
2442 /*****************************************************************************
2443 * Static local functions: *
2444 *****************************************************************************/
2445 static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
2448 writew(arg, ofsAddr + FuncArg);
2449 writew(cmd, ofsAddr + FuncCode);
2450 moxa_wait_finish(ofsAddr);
2453 static void moxa_wait_finish(void __iomem *ofsAddr)
2455 unsigned long i, j;
2457 i = jiffies;
2458 while (readw(ofsAddr + FuncCode) != 0) {
2459 j = jiffies;
2460 if ((j - i) > moxaFuncTout) {
2461 return;
2466 static void moxa_low_water_check(void __iomem *ofsAddr)
2468 int len;
2469 ushort rptr, wptr, mask;
2471 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2472 rptr = readw(ofsAddr + RXrptr);
2473 wptr = readw(ofsAddr + RXwptr);
2474 mask = readw(ofsAddr + RX_mask);
2475 len = (wptr - rptr) & mask;
2476 if (len <= Low_water)
2477 moxafunc(ofsAddr, FC_SendXon, 0);
2481 static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2483 void __iomem *baseAddr;
2484 int i;
2486 if(len < 0 || len > sizeof(moxaBuff))
2487 return -EINVAL;
2488 if(copy_from_user(moxaBuff, tmp, len))
2489 return -EFAULT;
2490 baseAddr = moxa_boards[cardno].basemem;
2491 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2492 msleep(10);
2493 for (i = 0; i < 4096; i++)
2494 writeb(0, baseAddr + i); /* clear fix page */
2495 for (i = 0; i < len; i++)
2496 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2497 writeb(0, baseAddr + Control_reg); /* restart */
2498 return (0);
2501 static int moxafindcard(int cardno)
2503 void __iomem *baseAddr;
2504 ushort tmp;
2506 baseAddr = moxa_boards[cardno].basemem;
2507 switch (moxa_boards[cardno].boardType) {
2508 case MOXA_BOARD_C218_ISA:
2509 case MOXA_BOARD_C218_PCI:
2510 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2511 return (-1);
2513 break;
2514 case MOXA_BOARD_CP204J:
2515 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2516 return (-1);
2518 break;
2519 default:
2520 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2521 return (-1);
2523 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2524 return (-2);
2527 return (0);
2530 static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2532 void __iomem *baseAddr;
2533 int i;
2535 if(len < 0 || len > sizeof(moxaBuff))
2536 return -EINVAL;
2537 if(copy_from_user(moxaBuff, tmp, len))
2538 return -EFAULT;
2539 baseAddr = moxa_boards[cardno].basemem;
2540 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2541 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2542 for (i = 0; i < 7168; i++)
2543 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2544 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2545 for (i = 0; i < (len - 7168); i++)
2546 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2547 return (0);
2550 static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2552 void __iomem *baseAddr, *ofsAddr;
2553 int retval, port, i;
2555 if(len < 0 || len > sizeof(moxaBuff))
2556 return -EINVAL;
2557 if(copy_from_user(moxaBuff, tmp, len))
2558 return -EFAULT;
2559 baseAddr = moxa_boards[cardno].basemem;
2560 switch (moxa_boards[cardno].boardType) {
2561 case MOXA_BOARD_C218_ISA:
2562 case MOXA_BOARD_C218_PCI:
2563 case MOXA_BOARD_CP204J:
2564 retval = moxaloadc218(cardno, baseAddr, len);
2565 if (retval)
2566 return (retval);
2567 port = cardno * MAX_PORTS_PER_BOARD;
2568 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2569 struct moxa_port *p = &moxa_ports[port];
2571 p->chkPort = 1;
2572 p->curBaud = 9600L;
2573 p->DCDState = 0;
2574 p->tableAddr = baseAddr + Extern_table + Extern_size * i;
2575 ofsAddr = p->tableAddr;
2576 writew(C218rx_mask, ofsAddr + RX_mask);
2577 writew(C218tx_mask, ofsAddr + TX_mask);
2578 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2579 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2581 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2582 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2585 break;
2586 default:
2587 retval = moxaloadc320(cardno, baseAddr, len,
2588 &moxa_boards[cardno].numPorts);
2589 if (retval)
2590 return (retval);
2591 port = cardno * MAX_PORTS_PER_BOARD;
2592 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2593 struct moxa_port *p = &moxa_ports[port];
2595 p->chkPort = 1;
2596 p->curBaud = 9600L;
2597 p->DCDState = 0;
2598 p->tableAddr = baseAddr + Extern_table + Extern_size * i;
2599 ofsAddr = p->tableAddr;
2600 if (moxa_boards[cardno].numPorts == 8) {
2601 writew(C320p8rx_mask, ofsAddr + RX_mask);
2602 writew(C320p8tx_mask, ofsAddr + TX_mask);
2603 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2604 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2605 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2606 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2608 } else if (moxa_boards[cardno].numPorts == 16) {
2609 writew(C320p16rx_mask, ofsAddr + RX_mask);
2610 writew(C320p16tx_mask, ofsAddr + TX_mask);
2611 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2612 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2613 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2614 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2616 } else if (moxa_boards[cardno].numPorts == 24) {
2617 writew(C320p24rx_mask, ofsAddr + RX_mask);
2618 writew(C320p24tx_mask, ofsAddr + TX_mask);
2619 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2620 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2621 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2622 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2623 } else if (moxa_boards[cardno].numPorts == 32) {
2624 writew(C320p32rx_mask, ofsAddr + RX_mask);
2625 writew(C320p32tx_mask, ofsAddr + TX_mask);
2626 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2627 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2628 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2629 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2630 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2633 break;
2635 moxa_boards[cardno].loadstat = 1;
2636 return (0);
2639 static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
2641 char retry;
2642 int i, j, len1, len2;
2643 ushort usum, *ptr, keycode;
2645 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2646 keycode = CP204J_KeyCode;
2647 else
2648 keycode = C218_KeyCode;
2649 usum = 0;
2650 len1 = len >> 1;
2651 ptr = (ushort *) moxaBuff;
2652 for (i = 0; i < len1; i++)
2653 usum += le16_to_cpu(*(ptr + i));
2654 retry = 0;
2655 do {
2656 len1 = len >> 1;
2657 j = 0;
2658 while (len1) {
2659 len2 = (len1 > 2048) ? 2048 : len1;
2660 len1 -= len2;
2661 for (i = 0; i < len2 << 1; i++)
2662 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2663 j += i;
2665 writew(len2, baseAddr + C218DLoad_len);
2666 writew(0, baseAddr + C218_key);
2667 for (i = 0; i < 100; i++) {
2668 if (readw(baseAddr + C218_key) == keycode)
2669 break;
2670 msleep(10);
2672 if (readw(baseAddr + C218_key) != keycode) {
2673 return (-1);
2676 writew(0, baseAddr + C218DLoad_len);
2677 writew(usum, baseAddr + C218check_sum);
2678 writew(0, baseAddr + C218_key);
2679 for (i = 0; i < 100; i++) {
2680 if (readw(baseAddr + C218_key) == keycode)
2681 break;
2682 msleep(10);
2684 retry++;
2685 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2686 if (readb(baseAddr + C218chksum_ok) != 1) {
2687 return (-1);
2689 writew(0, baseAddr + C218_key);
2690 for (i = 0; i < 100; i++) {
2691 if (readw(baseAddr + Magic_no) == Magic_code)
2692 break;
2693 msleep(10);
2695 if (readw(baseAddr + Magic_no) != Magic_code) {
2696 return (-1);
2698 writew(1, baseAddr + Disable_IRQ);
2699 writew(0, baseAddr + Magic_no);
2700 for (i = 0; i < 100; i++) {
2701 if (readw(baseAddr + Magic_no) == Magic_code)
2702 break;
2703 msleep(10);
2705 if (readw(baseAddr + Magic_no) != Magic_code) {
2706 return (-1);
2708 moxaCard = 1;
2709 moxa_boards[cardno].intNdx = baseAddr + IRQindex;
2710 moxa_boards[cardno].intPend = baseAddr + IRQpending;
2711 moxa_boards[cardno].intTable = baseAddr + IRQtable;
2712 return (0);
2715 static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
2717 ushort usum;
2718 int i, j, wlen, len2, retry;
2719 ushort *uptr;
2721 usum = 0;
2722 wlen = len >> 1;
2723 uptr = (ushort *) moxaBuff;
2724 for (i = 0; i < wlen; i++)
2725 usum += le16_to_cpu(uptr[i]);
2726 retry = 0;
2727 j = 0;
2728 do {
2729 while (wlen) {
2730 if (wlen > 2048)
2731 len2 = 2048;
2732 else
2733 len2 = wlen;
2734 wlen -= len2;
2735 len2 <<= 1;
2736 for (i = 0; i < len2; i++)
2737 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
2738 len2 >>= 1;
2739 j += i;
2740 writew(len2, baseAddr + C320DLoad_len);
2741 writew(0, baseAddr + C320_key);
2742 for (i = 0; i < 10; i++) {
2743 if (readw(baseAddr + C320_key) == C320_KeyCode)
2744 break;
2745 msleep(10);
2747 if (readw(baseAddr + C320_key) != C320_KeyCode)
2748 return (-1);
2750 writew(0, baseAddr + C320DLoad_len);
2751 writew(usum, baseAddr + C320check_sum);
2752 writew(0, baseAddr + C320_key);
2753 for (i = 0; i < 10; i++) {
2754 if (readw(baseAddr + C320_key) == C320_KeyCode)
2755 break;
2756 msleep(10);
2758 retry++;
2759 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
2760 if (readb(baseAddr + C320chksum_ok) != 1)
2761 return (-1);
2762 writew(0, baseAddr + C320_key);
2763 for (i = 0; i < 600; i++) {
2764 if (readw(baseAddr + Magic_no) == Magic_code)
2765 break;
2766 msleep(10);
2768 if (readw(baseAddr + Magic_no) != Magic_code)
2769 return (-100);
2771 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
2772 writew(0x3800, baseAddr + TMS320_PORT1);
2773 writew(0x3900, baseAddr + TMS320_PORT2);
2774 writew(28499, baseAddr + TMS320_CLOCK);
2775 } else {
2776 writew(0x3200, baseAddr + TMS320_PORT1);
2777 writew(0x3400, baseAddr + TMS320_PORT2);
2778 writew(19999, baseAddr + TMS320_CLOCK);
2780 writew(1, baseAddr + Disable_IRQ);
2781 writew(0, baseAddr + Magic_no);
2782 for (i = 0; i < 500; i++) {
2783 if (readw(baseAddr + Magic_no) == Magic_code)
2784 break;
2785 msleep(10);
2787 if (readw(baseAddr + Magic_no) != Magic_code)
2788 return (-102);
2790 j = readw(baseAddr + Module_cnt);
2791 if (j <= 0)
2792 return (-101);
2793 *numPorts = j * 8;
2794 writew(j, baseAddr + Module_no);
2795 writew(0, baseAddr + Magic_no);
2796 for (i = 0; i < 600; i++) {
2797 if (readw(baseAddr + Magic_no) == Magic_code)
2798 break;
2799 msleep(10);
2801 if (readw(baseAddr + Magic_no) != Magic_code)
2802 return (-102);
2803 moxaCard = 1;
2804 moxa_boards[cardno].intNdx = baseAddr + IRQindex;
2805 moxa_boards[cardno].intPend = baseAddr + IRQpending;
2806 moxa_boards[cardno].intTable = baseAddr + IRQtable;
2807 return (0);
2810 static void MoxaSetFifo(int port, int enable)
2812 void __iomem *ofsAddr = moxa_ports[port].tableAddr;
2814 if (!enable) {
2815 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
2816 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
2817 } else {
2818 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
2819 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);