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.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 * MOXA Intellio Series Driver
32 #include <linux/config.h>
33 #include <linux/module.h>
34 #include <linux/types.h>
36 #include <linux/ioport.h>
37 #include <linux/errno.h>
38 #include <linux/signal.h>
39 #include <linux/sched.h>
40 #include <linux/timer.h>
41 #include <linux/interrupt.h>
42 #include <linux/tty.h>
43 #include <linux/tty_flip.h>
44 #include <linux/major.h>
45 #include <linux/string.h>
46 #include <linux/fcntl.h>
47 #include <linux/ptrace.h>
48 #include <linux/serial.h>
49 #include <linux/tty_driver.h>
50 #include <linux/delay.h>
51 #include <linux/pci.h>
52 #include <linux/init.h>
54 #include <asm/system.h>
56 #include <asm/bitops.h>
57 #include <asm/uaccess.h>
59 #define MOXA_VERSION "5.1k"
62 #define MOXACUMAJOR 173
64 #define put_to_user(arg1, arg2) put_user(arg1, (unsigned long *)arg2)
65 #define get_from_user(arg1, arg2) get_user(arg1, (unsigned int *)arg2)
67 #define MAX_BOARDS 4 /* Don't change this value */
68 #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
69 #define MAX_PORTS 128 /* Don't change this value */
72 * Define the Moxa PCI vendor and device IDs.
74 #define MOXA_BUS_TYPE_ISA 0
75 #define MOXA_BUS_TYPE_PCI 1
77 #ifndef PCI_VENDOR_ID_MOXA
78 #define PCI_VENDOR_ID_MOXA 0x1393
80 #ifndef PCI_DEVICE_ID_CP204J
81 #define PCI_DEVICE_ID_CP204J 0x2040
83 #ifndef PCI_DEVICE_ID_C218
84 #define PCI_DEVICE_ID_C218 0x2180
86 #ifndef PCI_DEVICE_ID_C320
87 #define PCI_DEVICE_ID_C320 0x3200
91 MOXA_BOARD_C218_PCI = 1,
98 static char *moxa_brdname[] =
100 "C218 Turbo PCI series",
101 "C218 Turbo ISA series",
102 "C320 Turbo PCI series",
103 "C320 Turbo ISA series",
108 static struct pci_device_id moxa_pcibrds[] = {
109 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C218, PCI_ANY_ID, PCI_ANY_ID,
110 0, 0, MOXA_BOARD_C218_PCI },
111 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C320, PCI_ANY_ID, PCI_ANY_ID,
112 0, 0, MOXA_BOARD_C320_PCI },
113 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_CP204J, PCI_ANY_ID, PCI_ANY_ID,
114 0, 0, MOXA_BOARD_CP204J },
117 MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
118 #endif /* CONFIG_PCI */
120 typedef struct _moxa_isa_board_conf {
123 unsigned long baseAddr;
124 } moxa_isa_board_conf;
126 static moxa_isa_board_conf moxa_isa_boards[] =
128 /* {MOXA_BOARD_C218_ISA,8,0xDC000}, */
131 typedef struct _moxa_pci_devinfo {
136 typedef struct _moxa_board_conf {
139 unsigned long baseAddr;
141 moxa_pci_devinfo pciInfo;
144 static moxa_board_conf moxa_boards[MAX_BOARDS];
145 static unsigned long moxaBaseAddr[MAX_BOARDS];
151 unsigned short closing_wait;
154 long event; /* long req'd for set_bit --RR */
156 unsigned long statusflags;
157 struct tty_struct *tty;
159 wait_queue_head_t open_wait;
160 wait_queue_head_t close_wait;
161 struct work_struct tqueue;
164 struct mxser_mstatus {
172 static struct mxser_mstatus GMStatus[MAX_PORTS];
175 #define TXSTOPPED 0x1
177 #define EMPTYWAIT 0x4
181 #define MOXA_EVENT_HANGUP 1
183 #define SERIAL_DO_RESTART
186 #define SERIAL_TYPE_NORMAL 1
188 #define WAKEUP_CHARS 256
190 #define PORTNO(x) ((x)->index)
192 static int verbose = 0;
193 static int ttymajor = MOXAMAJOR;
194 /* Variables for insmod */
196 static int baseaddr[] = {0, 0, 0, 0};
197 static int type[] = {0, 0, 0, 0};
198 static int numports[] = {0, 0, 0, 0};
201 MODULE_AUTHOR("William Chen");
202 MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
203 MODULE_LICENSE("GPL");
204 MODULE_PARM(type, "1-4i");
205 MODULE_PARM(baseaddr, "1-4i");
206 MODULE_PARM(numports, "1-4i");
207 MODULE_PARM(ttymajor, "i");
208 MODULE_PARM(verbose, "i");
210 static struct tty_driver *moxaDriver;
211 static struct moxa_str moxaChannels[MAX_PORTS];
212 static unsigned char *moxaXmitBuff;
213 static int moxaTimer_on;
214 static struct timer_list moxaTimer;
215 static int moxaEmptyTimer_on[MAX_PORTS];
216 static struct timer_list moxaEmptyTimer[MAX_PORTS];
217 static struct semaphore moxaBuffSem;
222 static void do_moxa_softint(void *);
223 static int moxa_open(struct tty_struct *, struct file *);
224 static void moxa_close(struct tty_struct *, struct file *);
225 static int moxa_write(struct tty_struct *, int, const unsigned char *, int);
226 static int moxa_write_room(struct tty_struct *);
227 static void moxa_flush_buffer(struct tty_struct *);
228 static int moxa_chars_in_buffer(struct tty_struct *);
229 static void moxa_flush_chars(struct tty_struct *);
230 static void moxa_put_char(struct tty_struct *, unsigned char);
231 static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
232 static void moxa_throttle(struct tty_struct *);
233 static void moxa_unthrottle(struct tty_struct *);
234 static void moxa_set_termios(struct tty_struct *, struct termios *);
235 static void moxa_stop(struct tty_struct *);
236 static void moxa_start(struct tty_struct *);
237 static void moxa_hangup(struct tty_struct *);
238 static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
239 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
240 unsigned int set, unsigned int clear);
241 static void moxa_poll(unsigned long);
242 static void set_tty_param(struct tty_struct *);
243 static int block_till_ready(struct tty_struct *, struct file *,
245 static void setup_empty_event(struct tty_struct *);
246 static void check_xmit_empty(unsigned long);
247 static void shut_down(struct moxa_str *);
248 static void receive_data(struct moxa_str *);
250 * moxa board interface functions:
252 static void MoxaDriverInit(void);
253 static int MoxaDriverIoctl(unsigned int, unsigned long, int);
254 static int MoxaDriverPoll(void);
255 static int MoxaPortsOfCard(int);
256 static int MoxaPortIsValid(int);
257 static void MoxaPortEnable(int);
258 static void MoxaPortDisable(int);
259 static long MoxaPortGetMaxBaud(int);
260 static long MoxaPortSetBaud(int, long);
261 static int MoxaPortSetTermio(int, struct termios *);
262 static int MoxaPortGetLineOut(int, int *, int *);
263 static void MoxaPortLineCtrl(int, int, int);
264 static void MoxaPortFlowCtrl(int, int, int, int, int, int);
265 static int MoxaPortLineStatus(int);
266 static int MoxaPortDCDChange(int);
267 static int MoxaPortDCDON(int);
268 static void MoxaPortFlushData(int, int);
269 static int MoxaPortWriteData(int, unsigned char *, int);
270 static int MoxaPortReadData(int, unsigned char *, int);
271 static int MoxaPortTxQueue(int);
272 static int MoxaPortRxQueue(int);
273 static int MoxaPortTxFree(int);
274 static void MoxaPortTxDisable(int);
275 static void MoxaPortTxEnable(int);
276 static int MoxaPortResetBrkCnt(int);
277 static void MoxaPortSendBreak(int, int);
278 static int moxa_get_serial_info(struct moxa_str *, struct serial_struct __user *);
279 static int moxa_set_serial_info(struct moxa_str *, struct serial_struct __user *);
280 static void MoxaSetFifo(int port, int enable);
282 static struct tty_operations moxa_ops = {
286 .write_room = moxa_write_room,
287 .flush_buffer = moxa_flush_buffer,
288 .chars_in_buffer = moxa_chars_in_buffer,
289 .flush_chars = moxa_flush_chars,
290 .put_char = moxa_put_char,
292 .throttle = moxa_throttle,
293 .unthrottle = moxa_unthrottle,
294 .set_termios = moxa_set_termios,
297 .hangup = moxa_hangup,
298 .tiocmget = moxa_tiocmget,
299 .tiocmset = moxa_tiocmset,
303 static int moxa_get_PCI_conf(struct pci_dev *p, int board_type, moxa_board_conf * board)
305 board->baseAddr = pci_resource_start (p, 2);
306 board->boardType = board_type;
307 switch (board_type) {
308 case MOXA_BOARD_C218_ISA:
309 case MOXA_BOARD_C218_PCI:
313 case MOXA_BOARD_CP204J:
320 board->busType = MOXA_BUS_TYPE_PCI;
321 board->pciInfo.busNum = p->bus->number;
322 board->pciInfo.devNum = p->devfn >> 3;
326 #endif /* CONFIG_PCI */
328 static int __init moxa_init(void)
333 printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION);
334 moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
338 init_MUTEX(&moxaBuffSem);
339 moxaDriver->owner = THIS_MODULE;
340 moxaDriver->name = "ttya";
341 moxaDriver->devfs_name = "tts/a";
342 moxaDriver->major = ttymajor;
343 moxaDriver->minor_start = 0;
344 moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
345 moxaDriver->subtype = SERIAL_TYPE_NORMAL;
346 moxaDriver->init_termios = tty_std_termios;
347 moxaDriver->init_termios.c_iflag = 0;
348 moxaDriver->init_termios.c_oflag = 0;
349 moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
350 moxaDriver->init_termios.c_lflag = 0;
351 moxaDriver->flags = TTY_DRIVER_REAL_RAW;
352 tty_set_operations(moxaDriver, &moxa_ops);
356 for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) {
357 ch->type = PORT_16550A;
359 INIT_WORK(&ch->tqueue, do_moxa_softint, ch);
361 ch->close_delay = 5 * HZ / 10;
362 ch->closing_wait = 30 * HZ;
364 ch->blocked_open = 0;
365 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
366 init_waitqueue_head(&ch->open_wait);
367 init_waitqueue_head(&ch->close_wait);
370 for (i = 0; i < MAX_BOARDS; i++) {
371 moxa_boards[i].boardType = 0;
372 moxa_boards[i].numPorts = 0;
373 moxa_boards[i].baseAddr = 0;
374 moxa_boards[i].busType = 0;
375 moxa_boards[i].pciInfo.busNum = 0;
376 moxa_boards[i].pciInfo.devNum = 0;
379 printk("Tty devices major number = %d\n", ttymajor);
381 if (tty_register_driver(moxaDriver)) {
382 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
383 put_tty_driver(moxaDriver);
386 for (i = 0; i < MAX_PORTS; i++) {
387 init_timer(&moxaEmptyTimer[i]);
388 moxaEmptyTimer[i].function = check_xmit_empty;
389 moxaEmptyTimer[i].data = (unsigned long) & moxaChannels[i];
390 moxaEmptyTimer_on[i] = 0;
393 init_timer(&moxaTimer);
394 moxaTimer.function = moxa_poll;
395 moxaTimer.expires = jiffies + (HZ / 50);
397 add_timer(&moxaTimer);
399 /* Find the boards defined in source code */
401 for (i = 0; i < MAX_BOARDS; i++) {
402 if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) ||
403 (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) {
404 moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType;
405 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
406 moxa_boards[numBoards].numPorts = 8;
408 moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts;
409 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
410 moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr;
412 printk("Board %2d: %s board(baseAddr=%lx)\n",
414 moxa_brdname[moxa_boards[numBoards].boardType - 1],
415 moxa_boards[numBoards].baseAddr);
419 /* Find the boards defined form module args. */
421 for (i = 0; i < MAX_BOARDS; i++) {
422 if ((type[i] == MOXA_BOARD_C218_ISA) ||
423 (type[i] == MOXA_BOARD_C320_ISA)) {
425 printk("Board %2d: %s board(baseAddr=%lx)\n",
427 moxa_brdname[type[i] - 1],
428 (unsigned long) baseaddr[i]);
429 if (numBoards >= MAX_BOARDS) {
431 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
434 moxa_boards[numBoards].boardType = type[i];
435 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
436 moxa_boards[numBoards].numPorts = 8;
438 moxa_boards[numBoards].numPorts = numports[i];
439 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
440 moxa_boards[numBoards].baseAddr = baseaddr[i];
445 /* Find PCI boards here */
448 struct pci_dev *p = NULL;
449 int n = (sizeof(moxa_pcibrds) / sizeof(moxa_pcibrds[0])) - 1;
452 while ((p = pci_find_device(moxa_pcibrds[i].vendor, moxa_pcibrds[i].device, p))!=NULL)
454 if (pci_enable_device(p))
456 if (numBoards >= MAX_BOARDS) {
458 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
460 moxa_get_PCI_conf(p, moxa_pcibrds[i].driver_data,
461 &moxa_boards[numBoards]);
469 for (i = 0; i < numBoards; i++) {
470 moxaBaseAddr[i] = (unsigned long) ioremap((unsigned long) moxa_boards[i].baseAddr, 0x4000);
476 static void __exit moxa_exit(void)
481 printk("Unloading module moxa ...\n");
484 del_timer(&moxaTimer);
486 for (i = 0; i < MAX_PORTS; i++)
487 if (moxaEmptyTimer_on[i])
488 del_timer(&moxaEmptyTimer[i]);
490 if (tty_unregister_driver(moxaDriver))
491 printk("Couldn't unregister MOXA Intellio family serial driver\n");
492 put_tty_driver(moxaDriver);
498 module_init(moxa_init);
499 module_exit(moxa_exit);
501 static void do_moxa_softint(void *private_)
503 struct moxa_str *ch = (struct moxa_str *) private_;
504 struct tty_struct *tty;
506 if (ch && (tty = ch->tty)) {
507 if (test_and_clear_bit(MOXA_EVENT_HANGUP, &ch->event)) {
508 tty_hangup(tty); /* FIXME: module removal race here - AKPM */
509 wake_up_interruptible(&ch->open_wait);
510 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
515 static int moxa_open(struct tty_struct *tty, struct file *filp)
523 if (port == MAX_PORTS) {
526 if (!MoxaPortIsValid(port)) {
527 tty->driver_data = NULL;
532 page = get_zeroed_page(GFP_KERNEL);
537 /* This test is guarded by the BuffSem so no longer needed
542 moxaXmitBuff = (unsigned char *) page;
546 ch = &moxaChannels[port];
548 tty->driver_data = ch;
550 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
553 MoxaPortLineCtrl(ch->port, 1, 1);
554 MoxaPortEnable(ch->port);
555 ch->asyncflags |= ASYNC_INITIALIZED;
557 retval = block_till_ready(tty, filp, ch);
559 moxa_unthrottle(tty);
561 if (ch->type == PORT_16550A) {
562 MoxaSetFifo(ch->port, 1);
564 MoxaSetFifo(ch->port, 0);
570 static void moxa_close(struct tty_struct *tty, struct file *filp)
576 if (port == MAX_PORTS) {
579 if (!MoxaPortIsValid(port)) {
580 #ifdef SERIAL_DEBUG_CLOSE
581 printk("Invalid portno in moxa_close\n");
583 tty->driver_data = NULL;
586 if (tty->driver_data == NULL) {
589 if (tty_hung_up_p(filp)) {
592 ch = (struct moxa_str *) tty->driver_data;
594 if ((tty->count == 1) && (ch->count != 1)) {
595 printk("moxa_close: bad serial port count; tty->count is 1, "
596 "ch->count is %d\n", ch->count);
599 if (--ch->count < 0) {
600 printk("moxa_close: bad serial port count, device=%s\n",
607 ch->asyncflags |= ASYNC_CLOSING;
609 ch->cflag = tty->termios->c_cflag;
610 if (ch->asyncflags & ASYNC_INITIALIZED) {
611 setup_empty_event(tty);
612 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
613 moxaEmptyTimer_on[ch->port] = 0;
614 del_timer(&moxaEmptyTimer[ch->port]);
617 MoxaPortFlushData(port, 2);
619 if (tty->driver->flush_buffer)
620 tty->driver->flush_buffer(tty);
621 tty_ldisc_flush(tty);
626 if (ch->blocked_open) {
627 if (ch->close_delay) {
628 set_current_state(TASK_INTERRUPTIBLE);
629 schedule_timeout(ch->close_delay);
631 wake_up_interruptible(&ch->open_wait);
633 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
634 wake_up_interruptible(&ch->close_wait);
637 static int moxa_write(struct tty_struct *tty, int from_user,
638 const unsigned char *buf, int count)
644 ch = (struct moxa_str *) tty->driver_data;
650 if (count > PAGE_SIZE)
653 if (copy_from_user(moxaXmitBuff, buf, count)) {
657 len = MoxaPortWriteData(port, moxaXmitBuff, count);
658 restore_flags(flags);
665 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
666 restore_flags(flags);
669 /*********************************************
670 if ( !(ch->statusflags & LOWWAIT) &&
671 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
672 ************************************************/
673 ch->statusflags |= LOWWAIT;
677 static int moxa_write_room(struct tty_struct *tty)
683 ch = (struct moxa_str *) tty->driver_data;
686 return (MoxaPortTxFree(ch->port));
689 static void moxa_flush_buffer(struct tty_struct *tty)
691 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
695 MoxaPortFlushData(ch->port, 1);
697 wake_up_interruptible(&tty->write_wait);
700 static int moxa_chars_in_buffer(struct tty_struct *tty)
703 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
706 * Sigh...I have to check if driver_data is NULL here, because
707 * if an open() fails, the TTY subsystem eventually calls
708 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
709 * routine. And since the open() failed, we return 0 here. TDJ
713 chars = MoxaPortTxQueue(ch->port);
716 * Make it possible to wakeup anything waiting for output
717 * in tty_ioctl.c, etc.
719 if (!(ch->statusflags & EMPTYWAIT))
720 setup_empty_event(tty);
725 static void moxa_flush_chars(struct tty_struct *tty)
728 * Don't think I need this, because this is called to empty the TX
729 * buffer for the 16450, 16550, etc.
733 static void moxa_put_char(struct tty_struct *tty, unsigned char c)
739 ch = (struct moxa_str *) tty->driver_data;
746 MoxaPortWriteData(port, moxaXmitBuff, 1);
747 restore_flags(flags);
748 /************************************************
749 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
750 *************************************************/
751 ch->statusflags |= LOWWAIT;
754 static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
756 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
758 int flag = 0, dtr, rts;
761 if ((port != MAX_PORTS) && (!ch))
764 MoxaPortGetLineOut(ch->port, &dtr, &rts);
769 dtr = MoxaPortLineStatus(ch->port);
779 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
780 unsigned int set, unsigned int clear)
782 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
787 if ((port != MAX_PORTS) && (!ch))
790 MoxaPortGetLineOut(ch->port, &dtr, &rts);
795 if (clear & TIOCM_RTS)
797 if (clear & TIOCM_DTR)
799 MoxaPortLineCtrl(ch->port, dtr, rts);
803 static int moxa_ioctl(struct tty_struct *tty, struct file *file,
804 unsigned int cmd, unsigned long arg)
806 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
808 void __user *argp = (void __user *)arg;
812 if ((port != MAX_PORTS) && (!ch))
816 case TCSBRK: /* SVID version: non-zero arg --> no break */
817 retval = tty_check_change(tty);
820 setup_empty_event(tty);
821 tty_wait_until_sent(tty, 0);
823 MoxaPortSendBreak(ch->port, 0);
825 case TCSBRKP: /* support for POSIX tcsendbreak() */
826 retval = tty_check_change(tty);
829 setup_empty_event(tty);
830 tty_wait_until_sent(tty, 0);
831 MoxaPortSendBreak(ch->port, arg);
834 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
836 if(get_user(retval, (unsigned long __user *) argp))
839 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
842 ch->asyncflags &= ~ASYNC_CHECK_CD;
844 ch->asyncflags |= ASYNC_CHECK_CD;
847 return moxa_get_serial_info(ch, argp);
850 return moxa_set_serial_info(ch, argp);
852 retval = MoxaDriverIoctl(cmd, arg, port);
857 static void moxa_throttle(struct tty_struct *tty)
859 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
861 ch->statusflags |= THROTTLE;
864 static void moxa_unthrottle(struct tty_struct *tty)
866 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
868 ch->statusflags &= ~THROTTLE;
871 static void moxa_set_termios(struct tty_struct *tty,
872 struct termios *old_termios)
874 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
879 if (!(old_termios->c_cflag & CLOCAL) &&
880 (tty->termios->c_cflag & CLOCAL))
881 wake_up_interruptible(&ch->open_wait);
884 static void moxa_stop(struct tty_struct *tty)
886 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
890 MoxaPortTxDisable(ch->port);
891 ch->statusflags |= TXSTOPPED;
895 static void moxa_start(struct tty_struct *tty)
897 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
902 if (!(ch->statusflags & TXSTOPPED))
905 MoxaPortTxEnable(ch->port);
906 ch->statusflags &= ~TXSTOPPED;
909 static void moxa_hangup(struct tty_struct *tty)
911 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
913 moxa_flush_buffer(tty);
917 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
919 wake_up_interruptible(&ch->open_wait);
922 static void moxa_poll(unsigned long ignored)
926 struct tty_struct *tp;
930 del_timer(&moxaTimer);
932 if (MoxaDriverPoll() < 0) {
933 moxaTimer.function = moxa_poll;
934 moxaTimer.expires = jiffies + (HZ / 50);
936 add_timer(&moxaTimer);
939 for (card = 0; card < MAX_BOARDS; card++) {
940 if ((ports = MoxaPortsOfCard(card)) <= 0)
942 ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
943 for (i = 0; i < ports; i++, ch++) {
944 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
946 if (!(ch->statusflags & THROTTLE) &&
947 (MoxaPortRxQueue(ch->port) > 0))
949 if ((tp = ch->tty) == 0)
951 if (ch->statusflags & LOWWAIT) {
952 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
954 ch->statusflags &= ~LOWWAIT;
956 wake_up_interruptible(&tp->write_wait);
960 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
961 tty_insert_flip_char(tp, 0, TTY_BREAK);
962 tty_schedule_flip(tp);
964 if (MoxaPortDCDChange(ch->port)) {
965 if (ch->asyncflags & ASYNC_CHECK_CD) {
966 if (MoxaPortDCDON(ch->port))
967 wake_up_interruptible(&ch->open_wait);
969 set_bit(MOXA_EVENT_HANGUP, &ch->event);
970 schedule_work(&ch->tqueue);
977 moxaTimer.function = moxa_poll;
978 moxaTimer.expires = jiffies + (HZ / 50);
980 add_timer(&moxaTimer);
983 /******************************************************************************/
985 static void set_tty_param(struct tty_struct *tty)
987 register struct termios *ts;
989 int rts, cts, txflow, rxflow, xany;
991 ch = (struct moxa_str *) tty->driver_data;
993 if (ts->c_cflag & CLOCAL)
994 ch->asyncflags &= ~ASYNC_CHECK_CD;
996 ch->asyncflags |= ASYNC_CHECK_CD;
997 rts = cts = txflow = rxflow = xany = 0;
998 if (ts->c_cflag & CRTSCTS)
1000 if (ts->c_iflag & IXON)
1002 if (ts->c_iflag & IXOFF)
1004 if (ts->c_iflag & IXANY)
1006 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
1007 MoxaPortSetTermio(ch->port, ts);
1010 static int block_till_ready(struct tty_struct *tty, struct file *filp,
1011 struct moxa_str *ch)
1013 DECLARE_WAITQUEUE(wait,current);
1014 unsigned long flags;
1016 int do_clocal = C_CLOCAL(tty);
1019 * If the device is in the middle of being closed, then block
1020 * until it's done, and then try again.
1022 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
1023 if (ch->asyncflags & ASYNC_CLOSING)
1024 interruptible_sleep_on(&ch->close_wait);
1025 #ifdef SERIAL_DO_RESTART
1026 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1029 return (-ERESTARTSYS);
1035 * If non-blocking mode is set, then make the check up front
1038 if (filp->f_flags & O_NONBLOCK) {
1039 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1043 * Block waiting for the carrier detect and the line to become free
1046 add_wait_queue(&ch->open_wait, &wait);
1047 #ifdef SERIAL_DEBUG_OPEN
1048 printk("block_til_ready before block: ttys%d, count = %d\n",
1049 ch->line, ch->count);
1053 if (!tty_hung_up_p(filp))
1055 restore_flags(flags);
1058 set_current_state(TASK_INTERRUPTIBLE);
1059 if (tty_hung_up_p(filp) ||
1060 !(ch->asyncflags & ASYNC_INITIALIZED)) {
1061 #ifdef SERIAL_DO_RESTART
1062 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1065 retval = -ERESTARTSYS;
1071 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
1072 MoxaPortDCDON(ch->port)))
1075 if (signal_pending(current)) {
1076 retval = -ERESTARTSYS;
1081 set_current_state(TASK_RUNNING);
1082 remove_wait_queue(&ch->open_wait, &wait);
1083 if (!tty_hung_up_p(filp))
1086 #ifdef SERIAL_DEBUG_OPEN
1087 printk("block_til_ready after blocking: ttys%d, count = %d\n",
1088 ch->line, ch->count);
1092 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1096 static void setup_empty_event(struct tty_struct *tty)
1098 struct moxa_str *ch = tty->driver_data;
1099 unsigned long flags;
1103 ch->statusflags |= EMPTYWAIT;
1104 moxaEmptyTimer_on[ch->port] = 0;
1105 del_timer(&moxaEmptyTimer[ch->port]);
1106 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1107 moxaEmptyTimer_on[ch->port] = 1;
1108 add_timer(&moxaEmptyTimer[ch->port]);
1109 restore_flags(flags);
1112 static void check_xmit_empty(unsigned long data)
1114 struct moxa_str *ch;
1116 ch = (struct moxa_str *) data;
1117 moxaEmptyTimer_on[ch->port] = 0;
1118 del_timer(&moxaEmptyTimer[ch->port]);
1119 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1120 if (MoxaPortTxQueue(ch->port) == 0) {
1121 ch->statusflags &= ~EMPTYWAIT;
1122 tty_wakeup(ch->tty);
1123 wake_up_interruptible(&ch->tty->write_wait);
1126 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1127 moxaEmptyTimer_on[ch->port] = 1;
1128 add_timer(&moxaEmptyTimer[ch->port]);
1130 ch->statusflags &= ~EMPTYWAIT;
1133 static void shut_down(struct moxa_str *ch)
1135 struct tty_struct *tp;
1137 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1142 MoxaPortDisable(ch->port);
1145 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1147 if (tp->termios->c_cflag & HUPCL)
1148 MoxaPortLineCtrl(ch->port, 0, 0);
1150 ch->asyncflags &= ~ASYNC_INITIALIZED;
1153 static void receive_data(struct moxa_str *ch)
1155 struct tty_struct *tp;
1157 int i, count, rc, space;
1158 unsigned char *charptr, *flagptr;
1159 unsigned long flags;
1165 /**************************************************
1166 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1167 *****************************************************/
1169 MoxaPortFlushData(ch->port, 0);
1172 space = TTY_FLIPBUF_SIZE - tp->flip.count;
1175 charptr = tp->flip.char_buf_ptr;
1176 flagptr = tp->flip.flag_buf_ptr;
1177 rc = tp->flip.count;
1180 count = MoxaPortReadData(ch->port, charptr, space);
1181 restore_flags(flags);
1182 for (i = 0; i < count; i++)
1186 tp->flip.count = rc;
1187 tp->flip.char_buf_ptr = charptr;
1188 tp->flip.flag_buf_ptr = flagptr;
1189 tty_schedule_flip(ch->tty);
1192 #define Magic_code 0x404
1195 * System Configuration
1198 * for C218 BIOS initialization
1200 #define C218_ConfBase 0x800
1201 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1202 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1203 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1204 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1205 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1206 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1207 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1208 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1209 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1210 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1212 #define C218_LoadBuf 0x0F00
1213 #define C218_KeyCode 0x218
1214 #define CP204J_KeyCode 0x204
1217 * for C320 BIOS initialization
1219 #define C320_ConfBase 0x800
1220 #define C320_LoadBuf 0x0f00
1221 #define STS_init 0x05 /* for C320_status */
1223 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1224 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1225 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1226 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1227 #define C320check_sum C320_ConfBase + 8 /* WORD */
1228 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1229 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1230 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1232 #define C320_KeyCode 0x320
1234 #define FixPage_addr 0x0000 /* starting addr of static page */
1235 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1236 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1237 #define Control_reg 0x1ff0 /* select page and reset control */
1238 #define HW_reset 0x80
1243 #define FC_CardReset 0x80
1244 #define FC_ChannelReset 1 /* C320 firmware not supported */
1245 #define FC_EnableCH 2
1246 #define FC_DisableCH 3
1247 #define FC_SetParam 4
1248 #define FC_SetMode 5
1249 #define FC_SetRate 6
1250 #define FC_LineControl 7
1251 #define FC_LineStatus 8
1252 #define FC_XmitControl 9
1253 #define FC_FlushQueue 10
1254 #define FC_SendBreak 11
1255 #define FC_StopBreak 12
1256 #define FC_LoopbackON 13
1257 #define FC_LoopbackOFF 14
1258 #define FC_ClrIrqTable 15
1259 #define FC_SendXon 16
1260 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1261 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1262 #define FC_SetBreakIrq 19
1263 #define FC_SetLineIrq 20
1264 #define FC_SetFlowCtl 21
1265 #define FC_GenIrq 22
1266 #define FC_InCD180 23
1267 #define FC_OutCD180 24
1268 #define FC_InUARTreg 23
1269 #define FC_OutUARTreg 24
1270 #define FC_SetXonXoff 25
1271 #define FC_OutCD180CCR 26
1272 #define FC_ExtIQueue 27
1273 #define FC_ExtOQueue 28
1274 #define FC_ClrLineIrq 29
1275 #define FC_HWFlowCtl 30
1276 #define FC_GetClockRate 35
1277 #define FC_SetBaud 36
1278 #define FC_SetDataMode 41
1279 #define FC_GetCCSR 43
1280 #define FC_GetDataError 45
1281 #define FC_RxControl 50
1282 #define FC_ImmSend 51
1283 #define FC_SetXonState 52
1284 #define FC_SetXoffState 53
1285 #define FC_SetRxFIFOTrig 54
1286 #define FC_SetTxFIFOCnt 55
1287 #define FC_UnixRate 56
1288 #define FC_UnixResetTimer 57
1290 #define RxFIFOTrig1 0
1291 #define RxFIFOTrig4 1
1292 #define RxFIFOTrig8 2
1293 #define RxFIFOTrig14 3
1298 #define DRAM_global 0
1299 #define INT_data (DRAM_global + 0)
1300 #define Config_base (DRAM_global + 0x108)
1302 #define IRQindex (INT_data + 0)
1303 #define IRQpending (INT_data + 4)
1304 #define IRQtable (INT_data + 8)
1309 #define IntrRx 0x01 /* receiver data O.K. */
1310 #define IntrTx 0x02 /* transmit buffer empty */
1311 #define IntrFunc 0x04 /* function complete */
1312 #define IntrBreak 0x08 /* received break */
1313 #define IntrLine 0x10 /* line status change
1315 #define IntrIntr 0x20 /* received INTR code */
1316 #define IntrQuit 0x40 /* received QUIT code */
1317 #define IntrEOF 0x80 /* received EOF code */
1319 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1320 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1322 #define Magic_no (Config_base + 0)
1323 #define Card_model_no (Config_base + 2)
1324 #define Total_ports (Config_base + 4)
1325 #define Module_cnt (Config_base + 8)
1326 #define Module_no (Config_base + 10)
1327 #define Timer_10ms (Config_base + 14)
1328 #define Disable_IRQ (Config_base + 20)
1329 #define TMS320_PORT1 (Config_base + 22)
1330 #define TMS320_PORT2 (Config_base + 24)
1331 #define TMS320_CLOCK (Config_base + 26)
1334 * DATA BUFFER in DRAM
1336 #define Extern_table 0x400 /* Base address of the external table
1337 (24 words * 64) total 3K bytes
1338 (24 words * 128) total 6K bytes */
1339 #define Extern_size 0x60 /* 96 bytes */
1340 #define RXrptr 0x00 /* read pointer for RX buffer */
1341 #define RXwptr 0x02 /* write pointer for RX buffer */
1342 #define TXrptr 0x04 /* read pointer for TX buffer */
1343 #define TXwptr 0x06 /* write pointer for TX buffer */
1344 #define HostStat 0x08 /* IRQ flag and general flag */
1345 #define FlagStat 0x0A
1346 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1347 /* x x x x | | | | */
1348 /* | | | + CTS flow */
1349 /* | | +--- RTS flow */
1350 /* | +------ TX Xon/Xoff */
1351 /* +--------- RX Xon/Xoff */
1352 #define Break_cnt 0x0E /* received break count */
1353 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1354 #define RX_mask 0x12
1355 #define TX_mask 0x14
1356 #define Ofs_rxb 0x16
1357 #define Ofs_txb 0x18
1358 #define Page_rxb 0x1A
1359 #define Page_txb 0x1C
1360 #define EndPage_rxb 0x1E
1361 #define EndPage_txb 0x20
1362 #define Data_error 0x22
1363 #define RxTrigger 0x28
1364 #define TxTrigger 0x2a
1366 #define rRXwptr 0x34
1367 #define Low_water 0x36
1369 #define FuncCode 0x40
1370 #define FuncArg 0x42
1371 #define FuncArg1 0x44
1373 #define C218rx_size 0x2000 /* 8K bytes */
1374 #define C218tx_size 0x8000 /* 32K bytes */
1376 #define C218rx_mask (C218rx_size - 1)
1377 #define C218tx_mask (C218tx_size - 1)
1379 #define C320p8rx_size 0x2000
1380 #define C320p8tx_size 0x8000
1381 #define C320p8rx_mask (C320p8rx_size - 1)
1382 #define C320p8tx_mask (C320p8tx_size - 1)
1384 #define C320p16rx_size 0x2000
1385 #define C320p16tx_size 0x4000
1386 #define C320p16rx_mask (C320p16rx_size - 1)
1387 #define C320p16tx_mask (C320p16tx_size - 1)
1389 #define C320p24rx_size 0x2000
1390 #define C320p24tx_size 0x2000
1391 #define C320p24rx_mask (C320p24rx_size - 1)
1392 #define C320p24tx_mask (C320p24tx_size - 1)
1394 #define C320p32rx_size 0x1000
1395 #define C320p32tx_size 0x1000
1396 #define C320p32rx_mask (C320p32rx_size - 1)
1397 #define C320p32tx_mask (C320p32tx_size - 1)
1399 #define Page_size 0x2000
1400 #define Page_mask (Page_size - 1)
1401 #define C218rx_spage 3
1402 #define C218tx_spage 4
1403 #define C218rx_pageno 1
1404 #define C218tx_pageno 4
1405 #define C218buf_pageno 5
1407 #define C320p8rx_spage 3
1408 #define C320p8tx_spage 4
1409 #define C320p8rx_pgno 1
1410 #define C320p8tx_pgno 4
1411 #define C320p8buf_pgno 5
1413 #define C320p16rx_spage 3
1414 #define C320p16tx_spage 4
1415 #define C320p16rx_pgno 1
1416 #define C320p16tx_pgno 2
1417 #define C320p16buf_pgno 3
1419 #define C320p24rx_spage 3
1420 #define C320p24tx_spage 4
1421 #define C320p24rx_pgno 1
1422 #define C320p24tx_pgno 1
1423 #define C320p24buf_pgno 2
1425 #define C320p32rx_spage 3
1426 #define C320p32tx_ofs C320p32rx_size
1427 #define C320p32tx_spage 3
1428 #define C320p32buf_pgno 1
1433 #define WakeupRx 0x01
1434 #define WakeupTx 0x02
1435 #define WakeupBreak 0x08
1436 #define WakeupLine 0x10
1437 #define WakeupIntr 0x20
1438 #define WakeupQuit 0x40
1439 #define WakeupEOF 0x80 /* used in VTIME control */
1440 #define WakeupRxTrigger 0x100
1441 #define WakeupTxTrigger 0x200
1445 #define Rx_over 0x01
1446 #define Xoff_state 0x02
1447 #define Tx_flowOff 0x04
1448 #define Tx_enable 0x08
1449 #define CTS_state 0x10
1450 #define DSR_state 0x20
1451 #define DCD_state 0x80
1455 #define CTS_FlowCtl 1
1456 #define RTS_FlowCtl 2
1457 #define Tx_FlowCtl 4
1458 #define Rx_FlowCtl 8
1459 #define IXM_IXANY 0x10
1461 #define LowWater 128
1469 /* mode definition */
1475 #define MX_STOP1 0x00
1476 #define MX_STOP15 0x04
1477 #define MX_STOP2 0x08
1479 #define MX_PARNONE 0x00
1480 #define MX_PAREVEN 0x40
1481 #define MX_PARODD 0xC0
1486 #define QueryPort MAX_PORTS
1492 int rxcnt[MAX_PORTS];
1493 int txcnt[MAX_PORTS];
1495 typedef struct mon_str mon_st;
1497 #define DCD_changed 0x01
1498 #define DCD_oldstate 0x80
1500 static unsigned char moxaBuff[10240];
1501 static unsigned long moxaIntNdx[MAX_BOARDS];
1502 static unsigned long moxaIntPend[MAX_BOARDS];
1503 static unsigned long moxaIntTable[MAX_BOARDS];
1504 static char moxaChkPort[MAX_PORTS];
1505 static char moxaLineCtrl[MAX_PORTS];
1506 static unsigned long moxaTableAddr[MAX_PORTS];
1507 static long moxaCurBaud[MAX_PORTS];
1508 static char moxaDCDState[MAX_PORTS];
1509 static char moxaLowChkFlag[MAX_PORTS];
1510 static int moxaLowWaterChk;
1511 static int moxaCard;
1512 static mon_st moxaLog;
1513 static int moxaFuncTout;
1514 static ushort moxaBreakCnt[MAX_PORTS];
1516 static void moxadelay(int);
1517 static void moxafunc(unsigned long, int, ushort);
1518 static void wait_finish(unsigned long);
1519 static void low_water_check(unsigned long);
1520 static int moxaloadbios(int, unsigned char __user *, int);
1521 static int moxafindcard(int);
1522 static int moxaload320b(int, unsigned char __user *, int);
1523 static int moxaloadcode(int, unsigned char __user *, int);
1524 static int moxaloadc218(int, unsigned long, int);
1525 static int moxaloadc320(int, unsigned long, int, int *);
1527 /*****************************************************************************
1528 * Driver level functions: *
1529 * 1. MoxaDriverInit(void); *
1530 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1531 * 3. MoxaDriverPoll(void); *
1532 *****************************************************************************/
1533 void MoxaDriverInit(void)
1537 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1540 moxaLowWaterChk = 0;
1541 for (i = 0; i < MAX_PORTS; i++) {
1543 moxaLowChkFlag[i] = 0;
1544 moxaLineCtrl[i] = 0;
1545 moxaLog.rxcnt[i] = 0;
1546 moxaLog.txcnt[i] = 0;
1551 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1552 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1553 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1554 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1555 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1556 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1557 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1558 #define MOXA_GETDATACOUNT (MOXA + 23)
1559 #define MOXA_GET_IOQUEUE (MOXA + 27)
1560 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1561 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1562 #define MOXA_GET_MAJOR (MOXA + 63)
1563 #define MOXA_GET_CUMAJOR (MOXA + 64)
1564 #define MOXA_GETMSTATUS (MOXA + 65)
1578 static struct moxaq_str temp_queue[MAX_PORTS];
1579 static struct dl_str dltmp;
1581 void MoxaPortFlushData(int port, int mode)
1583 unsigned long ofsAddr;
1584 if ((mode < 0) || (mode > 2))
1586 ofsAddr = moxaTableAddr[port];
1587 moxafunc(ofsAddr, FC_FlushQueue, mode);
1589 moxaLowChkFlag[port] = 0;
1590 low_water_check(ofsAddr);
1594 int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1598 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1599 void __user *argp = (void __user *)arg;
1601 if (port == QueryPort) {
1602 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1603 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1604 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1605 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1606 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1611 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS * sizeof(moxa_board_conf)))
1614 case MOXA_INIT_DRIVER:
1615 if ((int) arg == 0x404)
1618 case MOXA_GETDATACOUNT:
1619 moxaLog.tick = jiffies;
1620 if(copy_to_user(argp, &moxaLog, sizeof(mon_st)))
1623 case MOXA_FLUSH_QUEUE:
1624 MoxaPortFlushData(port, arg);
1626 case MOXA_GET_IOQUEUE:
1627 for (i = 0; i < MAX_PORTS; i++) {
1628 if (moxaChkPort[i]) {
1629 temp_queue[i].inq = MoxaPortRxQueue(i);
1630 temp_queue[i].outq = MoxaPortTxQueue(i);
1633 if(copy_to_user(argp, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
1636 case MOXA_GET_OQUEUE:
1637 i = MoxaPortTxQueue(port);
1638 return put_user(i, (unsigned long __user *)argp);
1639 case MOXA_GET_IQUEUE:
1640 i = MoxaPortRxQueue(port);
1641 return put_user(i, (unsigned long __user *)argp);
1642 case MOXA_GET_MAJOR:
1643 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1646 case MOXA_GET_CUMAJOR:
1648 if(copy_to_user(argp, &i, sizeof(int)))
1651 case MOXA_GETMSTATUS:
1652 for (i = 0; i < MAX_PORTS; i++) {
1654 GMStatus[i].dcd = 0;
1655 GMStatus[i].dsr = 0;
1656 GMStatus[i].cts = 0;
1657 if (!moxaChkPort[i]) {
1660 status = MoxaPortLineStatus(moxaChannels[i].port);
1662 GMStatus[i].cts = 1;
1664 GMStatus[i].dsr = 1;
1666 GMStatus[i].dcd = 1;
1669 if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
1670 GMStatus[i].cflag = moxaChannels[i].cflag;
1672 GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
1674 if(copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
1678 return (-ENOIOCTLCMD);
1679 case MOXA_LOAD_BIOS:
1680 case MOXA_FIND_BOARD:
1681 case MOXA_LOAD_C320B:
1682 case MOXA_LOAD_CODE:
1686 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1688 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
1693 case MOXA_LOAD_BIOS:
1694 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1696 case MOXA_FIND_BOARD:
1697 return moxafindcard(dltmp.cardno);
1698 case MOXA_LOAD_C320B:
1699 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1700 default: /* to keep gcc happy */
1702 case MOXA_LOAD_CODE:
1703 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1711 int MoxaDriverPoll(void)
1713 register ushort temp;
1715 unsigned long ip, ofsAddr;
1720 for (card = 0; card < MAX_BOARDS; card++) {
1721 if ((ports = moxa_boards[card].numPorts) == 0)
1723 if (readb(moxaIntPend[card]) == 0xff) {
1724 ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
1725 p = card * MAX_PORTS_PER_BOARD;
1727 for (port = 0; port < ports; port += 2, p++) {
1728 if ((temp = readw(ip + port)) != 0) {
1729 writew(0, ip + port);
1730 ofsAddr = moxaTableAddr[p];
1732 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1733 if (temp & IntrBreak) {
1736 if (temp & IntrLine) {
1737 if (readb(ofsAddr + FlagStat) & DCD_state) {
1738 if ((moxaDCDState[p] & DCD_oldstate) == 0)
1739 moxaDCDState[p] = (DCD_oldstate |
1742 if (moxaDCDState[p] & DCD_oldstate)
1743 moxaDCDState[p] = DCD_changed;
1748 writeb(0, moxaIntPend[card]);
1750 if (moxaLowWaterChk) {
1751 p = card * MAX_PORTS_PER_BOARD;
1752 for (port = 0; port < ports; port++, p++) {
1753 if (moxaLowChkFlag[p]) {
1754 moxaLowChkFlag[p] = 0;
1755 ofsAddr = moxaTableAddr[p];
1756 low_water_check(ofsAddr);
1761 moxaLowWaterChk = 0;
1765 /*****************************************************************************
1766 * Card level function: *
1767 * 1. MoxaPortsOfCard(int cardno); *
1768 *****************************************************************************/
1769 int MoxaPortsOfCard(int cardno)
1772 if (moxa_boards[cardno].boardType == 0)
1774 return (moxa_boards[cardno].numPorts);
1777 /*****************************************************************************
1778 * Port level functions: *
1779 * 1. MoxaPortIsValid(int port); *
1780 * 2. MoxaPortEnable(int port); *
1781 * 3. MoxaPortDisable(int port); *
1782 * 4. MoxaPortGetMaxBaud(int port); *
1783 * 5. MoxaPortGetCurBaud(int port); *
1784 * 6. MoxaPortSetBaud(int port, long baud); *
1785 * 7. MoxaPortSetMode(int port, int databit, int stopbit, int parity); *
1786 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1787 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1788 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1789 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1790 * 12. MoxaPortLineStatus(int port); *
1791 * 13. MoxaPortDCDChange(int port); *
1792 * 14. MoxaPortDCDON(int port); *
1793 * 15. MoxaPortFlushData(int port, int mode); *
1794 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1795 * 17. MoxaPortReadData(int port, unsigned char * buffer, int length); *
1796 * 18. MoxaPortTxBufSize(int port); *
1797 * 19. MoxaPortRxBufSize(int port); *
1798 * 20. MoxaPortTxQueue(int port); *
1799 * 21. MoxaPortTxFree(int port); *
1800 * 22. MoxaPortRxQueue(int port); *
1801 * 23. MoxaPortRxFree(int port); *
1802 * 24. MoxaPortTxDisable(int port); *
1803 * 25. MoxaPortTxEnable(int port); *
1804 * 26. MoxaPortGetBrkCnt(int port); *
1805 * 27. MoxaPortResetBrkCnt(int port); *
1806 * 28. MoxaPortSetXonXoff(int port, int xonValue, int xoffValue); *
1807 * 29. MoxaPortIsTxHold(int port); *
1808 * 30. MoxaPortSendBreak(int port, int ticks); *
1809 *****************************************************************************/
1811 * Moxa Port Number Description:
1813 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1814 * the port number using in MOXA driver functions will be 0 to 31 for
1815 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1816 * to 127 for fourth. For example, if you setup three MOXA boards,
1817 * first board is C218, second board is C320-16 and third board is
1818 * C320-32. The port number of first board (C218 - 8 ports) is from
1819 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1820 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1821 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1822 * 127 will be invalid.
1825 * Moxa Functions Description:
1827 * Function 1: Driver initialization routine, this routine must be
1828 * called when initialized driver.
1830 * void MoxaDriverInit();
1833 * Function 2: Moxa driver private IOCTL command processing.
1835 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1837 * unsigned int cmd : IOCTL command
1838 * unsigned long arg : IOCTL argument
1839 * int port : port number (0 - 127)
1846 * Function 3: Moxa driver polling process routine.
1848 * int MoxaDriverPoll(void);
1850 * return: 0 ; polling O.K.
1851 * -1 : no any Moxa card.
1854 * Function 4: Get the ports of this card.
1856 * int MoxaPortsOfCard(int cardno);
1858 * int cardno : card number (0 - 3)
1860 * return: 0 : this card is invalid
1864 * Function 5: Check this port is valid or invalid
1866 * int MoxaPortIsValid(int port);
1867 * int port : port number (0 - 127, ref port description)
1869 * return: 0 : this port is invalid
1870 * 1 : this port is valid
1873 * Function 6: Enable this port to start Tx/Rx data.
1875 * void MoxaPortEnable(int port);
1876 * int port : port number (0 - 127)
1879 * Function 7: Disable this port
1881 * void MoxaPortDisable(int port);
1882 * int port : port number (0 - 127)
1885 * Function 8: Get the maximun available baud rate of this port.
1887 * long MoxaPortGetMaxBaud(int port);
1888 * int port : port number (0 - 127)
1890 * return: 0 : this port is invalid
1891 * 38400/57600/115200 bps
1894 * Function 9: Get the current baud rate of this port.
1896 * long MoxaPortGetCurBaud(int port);
1897 * int port : port number (0 - 127)
1899 * return: 0 : this port is invalid
1903 * Function 10: Setting baud rate of this port.
1905 * long MoxaPortSetBaud(int port, long baud);
1906 * int port : port number (0 - 127)
1907 * long baud : baud rate (50 - 115200)
1909 * return: 0 : this port is invalid or baud < 50
1910 * 50 - 115200 : the real baud rate set to the port, if
1911 * the argument baud is large than maximun
1912 * available baud rate, the real setting
1913 * baud rate will be the maximun baud rate.
1916 * Function 11: Setting the data-bits/stop-bits/parity of this port
1918 * int MoxaPortSetMode(int port, int databits, int stopbits, int parity);
1919 * int port : port number (0 - 127)
1920 * int databits : data bits (8/7/6/5)
1921 * int stopbits : stop bits (2/1/0, 0 show 1.5 stop bits)
1922 int parity : parity (0:None,1:Odd,2:Even,3:Mark,4:Space)
1924 * return: -1 : invalid parameter
1928 * Function 12: Configure the port.
1930 * int MoxaPortSetTermio(int port, struct termios *termio);
1931 * int port : port number (0 - 127)
1932 * struct termios * termio : termio structure pointer
1934 * return: -1 : this port is invalid or termio == NULL
1938 * Function 13: Get the DTR/RTS state of this port.
1940 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1941 * int port : port number (0 - 127)
1942 * int * dtrState : pointer to INT to receive the current DTR
1943 * state. (if NULL, this function will not
1944 * write to this address)
1945 * int * rtsState : pointer to INT to receive the current RTS
1946 * state. (if NULL, this function will not
1947 * write to this address)
1949 * return: -1 : this port is invalid
1953 * Function 14: Setting the DTR/RTS output state of this port.
1955 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1956 * int port : port number (0 - 127)
1957 * int dtrState : DTR output state (0: off, 1: on)
1958 * int rtsState : RTS output state (0: off, 1: on)
1961 * Function 15: Setting the flow control of this port.
1963 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1964 * int txFlow,int xany);
1965 * int port : port number (0 - 127)
1966 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1967 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1968 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1969 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1970 * int xany : S/W XANY flow control (0: no, 1: yes)
1973 * Function 16: Get ths line status of this port
1975 * int MoxaPortLineStatus(int port);
1976 * int port : port number (0 - 127)
1978 * return: Bit 0 - CTS state (0: off, 1: on)
1979 * Bit 1 - DSR state (0: off, 1: on)
1980 * Bit 2 - DCD state (0: off, 1: on)
1983 * Function 17: Check the DCD state has changed since the last read
1986 * int MoxaPortDCDChange(int port);
1987 * int port : port number (0 - 127)
1989 * return: 0 : no changed
1990 * 1 : DCD has changed
1993 * Function 18: Check ths current DCD state is ON or not.
1995 * int MoxaPortDCDON(int port);
1996 * int port : port number (0 - 127)
1998 * return: 0 : DCD off
2002 * Function 19: Flush the Rx/Tx buffer data of this port.
2004 * void MoxaPortFlushData(int port, int mode);
2005 * int port : port number (0 - 127)
2007 * 0 : flush the Rx buffer
2008 * 1 : flush the Tx buffer
2009 * 2 : flush the Rx and Tx buffer
2012 * Function 20: Write data.
2014 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
2015 * int port : port number (0 - 127)
2016 * unsigned char * buffer : pointer to write data buffer.
2017 * int length : write data length
2019 * return: 0 - length : real write data length
2022 * Function 21: Read data.
2024 * int MoxaPortReadData(int port, unsigned char * buffer, int length);
2025 * int port : port number (0 - 127)
2026 * unsigned char * buffer : pointer to read data buffer.
2027 * int length : read data buffer length
2029 * return: 0 - length : real read data length
2032 * Function 22: Get the Tx buffer size of this port
2034 * int MoxaPortTxBufSize(int port);
2035 * int port : port number (0 - 127)
2037 * return: .. : Tx buffer size
2040 * Function 23: Get the Rx buffer size of this port
2042 * int MoxaPortRxBufSize(int port);
2043 * int port : port number (0 - 127)
2045 * return: .. : Rx buffer size
2048 * Function 24: Get the Tx buffer current queued data bytes
2050 * int MoxaPortTxQueue(int port);
2051 * int port : port number (0 - 127)
2053 * return: .. : Tx buffer current queued data bytes
2056 * Function 25: Get the Tx buffer current free space
2058 * int MoxaPortTxFree(int port);
2059 * int port : port number (0 - 127)
2061 * return: .. : Tx buffer current free space
2064 * Function 26: Get the Rx buffer current queued data bytes
2066 * int MoxaPortRxQueue(int port);
2067 * int port : port number (0 - 127)
2069 * return: .. : Rx buffer current queued data bytes
2072 * Function 27: Get the Rx buffer current free space
2074 * int MoxaPortRxFree(int port);
2075 * int port : port number (0 - 127)
2077 * return: .. : Rx buffer current free space
2080 * Function 28: Disable port data transmission.
2082 * void MoxaPortTxDisable(int port);
2083 * int port : port number (0 - 127)
2086 * Function 29: Enable port data transmission.
2088 * void MoxaPortTxEnable(int port);
2089 * int port : port number (0 - 127)
2092 * Function 30: Get the received BREAK signal count.
2094 * int MoxaPortGetBrkCnt(int port);
2095 * int port : port number (0 - 127)
2097 * return: 0 - .. : BREAK signal count
2100 * Function 31: Get the received BREAK signal count and reset it.
2102 * int MoxaPortResetBrkCnt(int port);
2103 * int port : port number (0 - 127)
2105 * return: 0 - .. : BREAK signal count
2108 * Function 32: Set the S/W flow control new XON/XOFF value, default
2109 * XON is 0x11 & XOFF is 0x13.
2111 * void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue);
2112 * int port : port number (0 - 127)
2113 * int xonValue : new XON value (0 - 255)
2114 * int xoffValue : new XOFF value (0 - 255)
2117 * Function 33: Check this port's transmission is hold by remote site
2118 * because the flow control.
2120 * int MoxaPortIsTxHold(int port);
2121 * int port : port number (0 - 127)
2123 * return: 0 : normal
2124 * 1 : hold by remote site
2127 * Function 34: Send out a BREAK signal.
2129 * void MoxaPortSendBreak(int port, int ms100);
2130 * int port : port number (0 - 127)
2131 * int ms100 : break signal time interval.
2132 * unit: 100 mini-second. if ms100 == 0, it will
2133 * send out a about 250 ms BREAK signal.
2136 int MoxaPortIsValid(int port)
2141 if (moxaChkPort[port] == 0)
2146 void MoxaPortEnable(int port)
2148 unsigned long ofsAddr;
2149 int MoxaPortLineStatus(int);
2150 short lowwater = 512;
2152 ofsAddr = moxaTableAddr[port];
2153 writew(lowwater, ofsAddr + Low_water);
2154 moxaBreakCnt[port] = 0;
2155 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2156 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2157 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
2159 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
2162 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
2163 moxafunc(ofsAddr, FC_FlushQueue, 2);
2165 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
2166 MoxaPortLineStatus(port);
2169 void MoxaPortDisable(int port)
2171 unsigned long ofsAddr;
2173 ofsAddr = moxaTableAddr[port];
2174 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
2175 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
2176 writew(0, ofsAddr + HostStat);
2177 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
2180 long MoxaPortGetMaxBaud(int port)
2182 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2183 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
2190 long MoxaPortSetBaud(int port, long baud)
2192 unsigned long ofsAddr;
2196 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
2198 ofsAddr = moxaTableAddr[port];
2202 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2203 else if (max == 57600L)
2204 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2206 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2208 moxafunc(ofsAddr, FC_SetBaud, val);
2210 moxaCurBaud[port] = baud;
2214 int MoxaPortSetTermio(int port, struct termios *termio)
2216 unsigned long ofsAddr;
2221 if (moxaChkPort[port] == 0 || termio == 0)
2223 ofsAddr = moxaTableAddr[port];
2224 cflag = termio->c_cflag; /* termio->c_cflag */
2226 mode = termio->c_cflag & CSIZE;
2229 else if (mode == CS6)
2231 else if (mode == CS7)
2233 else if (mode == CS8)
2236 if (termio->c_cflag & CSTOPB) {
2244 if (termio->c_cflag & PARENB) {
2245 if (termio->c_cflag & PARODD)
2252 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2254 cflag &= (CBAUD | CBAUDEX);
2256 #define B921600 (B460800+1)
2322 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2323 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2324 if (baud == 921600L)
2327 MoxaPortSetBaud(port, baud);
2329 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2330 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2331 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2332 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2333 wait_finish(ofsAddr);
2339 int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2342 if (!MoxaPortIsValid(port))
2345 if (moxaLineCtrl[port] & DTR_ON)
2351 if (moxaLineCtrl[port] & RTS_ON)
2359 void MoxaPortLineCtrl(int port, int dtr, int rts)
2361 unsigned long ofsAddr;
2364 ofsAddr = moxaTableAddr[port];
2370 moxaLineCtrl[port] = mode;
2371 moxafunc(ofsAddr, FC_LineControl, mode);
2374 void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2376 unsigned long ofsAddr;
2379 ofsAddr = moxaTableAddr[port];
2382 mode |= RTS_FlowCtl;
2384 mode |= CTS_FlowCtl;
2391 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2394 int MoxaPortLineStatus(int port)
2396 unsigned long ofsAddr;
2399 ofsAddr = moxaTableAddr[port];
2400 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2401 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2402 moxafunc(ofsAddr, FC_LineStatus, 0);
2403 val = readw(ofsAddr + FuncArg);
2405 val = readw(ofsAddr + FlagStat) >> 4;
2410 if ((moxaDCDState[port] & DCD_oldstate) == 0)
2411 moxaDCDState[port] = (DCD_oldstate | DCD_changed);
2413 if (moxaDCDState[port] & DCD_oldstate)
2414 moxaDCDState[port] = DCD_changed;
2420 int MoxaPortDCDChange(int port)
2424 if (moxaChkPort[port] == 0)
2426 n = moxaDCDState[port];
2427 moxaDCDState[port] &= ~DCD_changed;
2432 int MoxaPortDCDON(int port)
2436 if (moxaChkPort[port] == 0)
2438 if (moxaDCDState[port] & DCD_oldstate)
2447 int MoxaDumpMem(int port, unsigned char * buffer, int len)
2450 unsigned long baseAddr,ofsAddr,ofs;
2452 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2453 ofs = baseAddr + DynPage_addr + pageofs;
2456 for (i = 0; i < len; i++)
2457 buffer[i] = readb(ofs+i);
2462 int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2467 ushort head, tx_mask, spage, epage;
2468 ushort pageno, pageofs, bufhead;
2469 unsigned long baseAddr, ofsAddr, ofs;
2471 ofsAddr = moxaTableAddr[port];
2472 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2473 tx_mask = readw(ofsAddr + TX_mask);
2474 spage = readw(ofsAddr + Page_txb);
2475 epage = readw(ofsAddr + EndPage_txb);
2476 tail = readw(ofsAddr + TXwptr);
2477 head = readw(ofsAddr + TXrptr);
2478 c = (head > tail) ? (head - tail - 1)
2479 : (head - tail + tx_mask);
2482 moxaLog.txcnt[port] += c;
2484 if (spage == epage) {
2485 bufhead = readw(ofsAddr + Ofs_txb);
2486 writew(spage, baseAddr + Control_reg);
2489 len = head - tail - 1;
2491 len = tx_mask + 1 - tail;
2492 len = (c > len) ? len : c;
2493 ofs = baseAddr + DynPage_addr + bufhead + tail;
2494 for (i = 0; i < len; i++)
2495 writeb(*buffer++, ofs + i);
2496 tail = (tail + len) & tx_mask;
2499 writew(tail, ofsAddr + TXwptr);
2502 pageno = spage + (tail >> 13);
2503 pageofs = tail & Page_mask;
2505 cnt = Page_size - pageofs;
2509 writeb(pageno, baseAddr + Control_reg);
2510 ofs = baseAddr + DynPage_addr + pageofs;
2511 for (i = 0; i < cnt; i++)
2512 writeb(*buffer++, ofs + i);
2514 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2517 if (++pageno == epage)
2522 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2526 int MoxaPortReadData(int port, unsigned char * buffer, int space)
2528 register ushort head, pageofs;
2529 int i, count, cnt, len, total, remain;
2530 ushort tail, rx_mask, spage, epage;
2531 ushort pageno, bufhead;
2532 unsigned long baseAddr, ofsAddr, ofs;
2534 ofsAddr = moxaTableAddr[port];
2535 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2536 head = readw(ofsAddr + RXrptr);
2537 tail = readw(ofsAddr + RXwptr);
2538 rx_mask = readw(ofsAddr + RX_mask);
2539 spage = readw(ofsAddr + Page_rxb);
2540 epage = readw(ofsAddr + EndPage_rxb);
2541 count = (tail >= head) ? (tail - head)
2542 : (tail - head + rx_mask + 1);
2546 total = (space > count) ? count : space;
2547 remain = count - total;
2548 moxaLog.rxcnt[port] += total;
2550 if (spage == epage) {
2551 bufhead = readw(ofsAddr + Ofs_rxb);
2552 writew(spage, baseAddr + Control_reg);
2557 len = rx_mask + 1 - head;
2558 len = (count > len) ? len : count;
2559 ofs = baseAddr + DynPage_addr + bufhead + head;
2560 for (i = 0; i < len; i++)
2561 *buffer++ = readb(ofs + i);
2562 head = (head + len) & rx_mask;
2565 writew(head, ofsAddr + RXrptr);
2568 pageno = spage + (head >> 13);
2569 pageofs = head & Page_mask;
2571 cnt = Page_size - pageofs;
2575 writew(pageno, baseAddr + Control_reg);
2576 ofs = baseAddr + DynPage_addr + pageofs;
2577 for (i = 0; i < cnt; i++)
2578 *buffer++ = readb(ofs + i);
2580 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2583 if (++pageno == epage)
2588 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2589 moxaLowWaterChk = 1;
2590 moxaLowChkFlag[port] = 1;
2596 int MoxaPortTxQueue(int port)
2598 unsigned long ofsAddr;
2599 ushort rptr, wptr, mask;
2602 ofsAddr = moxaTableAddr[port];
2603 rptr = readw(ofsAddr + TXrptr);
2604 wptr = readw(ofsAddr + TXwptr);
2605 mask = readw(ofsAddr + TX_mask);
2606 len = (wptr - rptr) & mask;
2610 int MoxaPortTxFree(int port)
2612 unsigned long ofsAddr;
2613 ushort rptr, wptr, mask;
2616 ofsAddr = moxaTableAddr[port];
2617 rptr = readw(ofsAddr + TXrptr);
2618 wptr = readw(ofsAddr + TXwptr);
2619 mask = readw(ofsAddr + TX_mask);
2620 len = mask - ((wptr - rptr) & mask);
2624 int MoxaPortRxQueue(int port)
2626 unsigned long ofsAddr;
2627 ushort rptr, wptr, mask;
2630 ofsAddr = moxaTableAddr[port];
2631 rptr = readw(ofsAddr + RXrptr);
2632 wptr = readw(ofsAddr + RXwptr);
2633 mask = readw(ofsAddr + RX_mask);
2634 len = (wptr - rptr) & mask;
2639 void MoxaPortTxDisable(int port)
2641 unsigned long ofsAddr;
2643 ofsAddr = moxaTableAddr[port];
2644 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2647 void MoxaPortTxEnable(int port)
2649 unsigned long ofsAddr;
2651 ofsAddr = moxaTableAddr[port];
2652 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2656 int MoxaPortResetBrkCnt(int port)
2659 cnt = moxaBreakCnt[port];
2660 moxaBreakCnt[port] = 0;
2665 void MoxaPortSendBreak(int port, int ms100)
2667 unsigned long ofsAddr;
2669 ofsAddr = moxaTableAddr[port];
2671 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2672 moxadelay(ms100 * (HZ / 10));
2674 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2675 moxadelay(HZ / 4); /* 250 ms */
2677 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2680 static int moxa_get_serial_info(struct moxa_str *info,
2681 struct serial_struct __user *retinfo)
2683 struct serial_struct tmp;
2685 memset(&tmp, 0, sizeof(tmp));
2686 tmp.type = info->type;
2687 tmp.line = info->port;
2690 tmp.flags = info->asyncflags;
2691 tmp.baud_base = 921600;
2692 tmp.close_delay = info->close_delay;
2693 tmp.closing_wait = info->closing_wait;
2694 tmp.custom_divisor = 0;
2696 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2702 static int moxa_set_serial_info(struct moxa_str *info,
2703 struct serial_struct __user *new_info)
2705 struct serial_struct new_serial;
2707 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2710 if ((new_serial.irq != 0) ||
2711 (new_serial.port != 0) ||
2712 // (new_serial.type != info->type) ||
2713 (new_serial.custom_divisor != 0) ||
2714 (new_serial.baud_base != 921600))
2717 if (!capable(CAP_SYS_ADMIN)) {
2718 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2719 (info->asyncflags & ~ASYNC_USR_MASK)))
2722 info->close_delay = new_serial.close_delay * HZ / 100;
2723 info->closing_wait = new_serial.closing_wait * HZ / 100;
2726 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2727 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2729 if (new_serial.type == PORT_16550A) {
2730 MoxaSetFifo(info->port, 1);
2732 MoxaSetFifo(info->port, 0);
2735 info->type = new_serial.type;
2741 /*****************************************************************************
2742 * Static local functions: *
2743 *****************************************************************************/
2745 * moxadelay - delays a specified number ticks
2747 static void moxadelay(int tick)
2749 unsigned long st, et;
2753 while (time_before(jiffies, et));
2756 static void moxafunc(unsigned long ofsAddr, int cmd, ushort arg)
2759 writew(arg, ofsAddr + FuncArg);
2760 writew(cmd, ofsAddr + FuncCode);
2761 wait_finish(ofsAddr);
2764 static void wait_finish(unsigned long ofsAddr)
2769 while (readw(ofsAddr + FuncCode) != 0) {
2771 if ((j - i) > moxaFuncTout) {
2777 static void low_water_check(unsigned long ofsAddr)
2780 ushort rptr, wptr, mask;
2782 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2783 rptr = readw(ofsAddr + RXrptr);
2784 wptr = readw(ofsAddr + RXwptr);
2785 mask = readw(ofsAddr + RX_mask);
2786 len = (wptr - rptr) & mask;
2787 if (len <= Low_water)
2788 moxafunc(ofsAddr, FC_SendXon, 0);
2792 static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2794 unsigned long baseAddr;
2797 if(copy_from_user(moxaBuff, tmp, len))
2799 baseAddr = moxaBaseAddr[cardno];
2800 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2801 moxadelay(1); /* delay 10 ms */
2802 for (i = 0; i < 4096; i++)
2803 writeb(0, baseAddr + i); /* clear fix page */
2804 for (i = 0; i < len; i++)
2805 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2806 writeb(0, baseAddr + Control_reg); /* restart */
2810 static int moxafindcard(int cardno)
2812 unsigned long baseAddr;
2815 baseAddr = moxaBaseAddr[cardno];
2816 switch (moxa_boards[cardno].boardType) {
2817 case MOXA_BOARD_C218_ISA:
2818 case MOXA_BOARD_C218_PCI:
2819 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2823 case MOXA_BOARD_CP204J:
2824 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2829 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2832 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2839 static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2841 unsigned long baseAddr;
2844 if(len > sizeof(moxaBuff))
2846 if(copy_from_user(moxaBuff, tmp, len))
2848 baseAddr = moxaBaseAddr[cardno];
2849 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2850 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2851 for (i = 0; i < 7168; i++)
2852 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2853 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2854 for (i = 0; i < (len - 7168); i++)
2855 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2859 static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2861 unsigned long baseAddr, ofsAddr;
2862 int retval, port, i;
2864 if(copy_from_user(moxaBuff, tmp, len))
2866 baseAddr = moxaBaseAddr[cardno];
2867 switch (moxa_boards[cardno].boardType) {
2868 case MOXA_BOARD_C218_ISA:
2869 case MOXA_BOARD_C218_PCI:
2870 case MOXA_BOARD_CP204J:
2871 retval = moxaloadc218(cardno, baseAddr, len);
2874 port = cardno * MAX_PORTS_PER_BOARD;
2875 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2876 moxaChkPort[port] = 1;
2877 moxaCurBaud[port] = 9600L;
2878 moxaDCDState[port] = 0;
2879 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2880 ofsAddr = moxaTableAddr[port];
2881 writew(C218rx_mask, ofsAddr + RX_mask);
2882 writew(C218tx_mask, ofsAddr + TX_mask);
2883 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2884 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2886 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2887 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2892 retval = moxaloadc320(cardno, baseAddr, len,
2893 &moxa_boards[cardno].numPorts);
2896 port = cardno * MAX_PORTS_PER_BOARD;
2897 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2898 moxaChkPort[port] = 1;
2899 moxaCurBaud[port] = 9600L;
2900 moxaDCDState[port] = 0;
2901 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2902 ofsAddr = moxaTableAddr[port];
2903 if (moxa_boards[cardno].numPorts == 8) {
2904 writew(C320p8rx_mask, ofsAddr + RX_mask);
2905 writew(C320p8tx_mask, ofsAddr + TX_mask);
2906 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2907 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2908 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2909 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2911 } else if (moxa_boards[cardno].numPorts == 16) {
2912 writew(C320p16rx_mask, ofsAddr + RX_mask);
2913 writew(C320p16tx_mask, ofsAddr + TX_mask);
2914 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2915 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2916 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2917 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2919 } else if (moxa_boards[cardno].numPorts == 24) {
2920 writew(C320p24rx_mask, ofsAddr + RX_mask);
2921 writew(C320p24tx_mask, ofsAddr + TX_mask);
2922 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2923 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2924 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2925 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2926 } else if (moxa_boards[cardno].numPorts == 32) {
2927 writew(C320p32rx_mask, ofsAddr + RX_mask);
2928 writew(C320p32tx_mask, ofsAddr + TX_mask);
2929 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2930 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2931 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2932 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2933 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2941 static int moxaloadc218(int cardno, unsigned long baseAddr, int len)
2944 int i, j, len1, len2;
2945 ushort usum, *ptr, keycode;
2947 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2948 keycode = CP204J_KeyCode;
2950 keycode = C218_KeyCode;
2953 ptr = (ushort *) moxaBuff;
2954 for (i = 0; i < len1; i++)
2961 len2 = (len1 > 2048) ? 2048 : len1;
2963 for (i = 0; i < len2 << 1; i++)
2964 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2967 writew(len2, baseAddr + C218DLoad_len);
2968 writew(0, baseAddr + C218_key);
2969 for (i = 0; i < 100; i++) {
2970 if (readw(baseAddr + C218_key) == keycode)
2972 moxadelay(1); /* delay 10 ms */
2974 if (readw(baseAddr + C218_key) != keycode) {
2978 writew(0, baseAddr + C218DLoad_len);
2979 writew(usum, baseAddr + C218check_sum);
2980 writew(0, baseAddr + C218_key);
2981 for (i = 0; i < 100; i++) {
2982 if (readw(baseAddr + C218_key) == keycode)
2984 moxadelay(1); /* delay 10 ms */
2987 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2988 if (readb(baseAddr + C218chksum_ok) != 1) {
2991 writew(0, baseAddr + C218_key);
2992 for (i = 0; i < 100; i++) {
2993 if (readw(baseAddr + Magic_no) == Magic_code)
2995 moxadelay(1); /* delay 10 ms */
2997 if (readw(baseAddr + Magic_no) != Magic_code) {
3000 writew(1, baseAddr + Disable_IRQ);
3001 writew(0, baseAddr + Magic_no);
3002 for (i = 0; i < 100; i++) {
3003 if (readw(baseAddr + Magic_no) == Magic_code)
3005 moxadelay(1); /* delay 10 ms */
3007 if (readw(baseAddr + Magic_no) != Magic_code) {
3011 moxaIntNdx[cardno] = baseAddr + IRQindex;
3012 moxaIntPend[cardno] = baseAddr + IRQpending;
3013 moxaIntTable[cardno] = baseAddr + IRQtable;
3017 static int moxaloadc320(int cardno, unsigned long baseAddr, int len, int *numPorts)
3020 int i, j, wlen, len2, retry;
3025 uptr = (ushort *) moxaBuff;
3026 for (i = 0; i < wlen; i++)
3038 for (i = 0; i < len2; i++)
3039 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
3042 writew(len2, baseAddr + C320DLoad_len);
3043 writew(0, baseAddr + C320_key);
3044 for (i = 0; i < 10; i++) {
3045 if (readw(baseAddr + C320_key) == C320_KeyCode)
3049 if (readw(baseAddr + C320_key) != C320_KeyCode)
3052 writew(0, baseAddr + C320DLoad_len);
3053 writew(usum, baseAddr + C320check_sum);
3054 writew(0, baseAddr + C320_key);
3055 for (i = 0; i < 10; i++) {
3056 if (readw(baseAddr + C320_key) == C320_KeyCode)
3061 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
3062 if (readb(baseAddr + C320chksum_ok) != 1)
3064 writew(0, baseAddr + C320_key);
3065 for (i = 0; i < 600; i++) {
3066 if (readw(baseAddr + Magic_no) == Magic_code)
3070 if (readw(baseAddr + Magic_no) != Magic_code)
3073 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
3074 writew(0x3800, baseAddr + TMS320_PORT1);
3075 writew(0x3900, baseAddr + TMS320_PORT2);
3076 writew(28499, baseAddr + TMS320_CLOCK);
3078 writew(0x3200, baseAddr + TMS320_PORT1);
3079 writew(0x3400, baseAddr + TMS320_PORT2);
3080 writew(19999, baseAddr + TMS320_CLOCK);
3082 writew(1, baseAddr + Disable_IRQ);
3083 writew(0, baseAddr + Magic_no);
3084 for (i = 0; i < 500; i++) {
3085 if (readw(baseAddr + Magic_no) == Magic_code)
3089 if (readw(baseAddr + Magic_no) != Magic_code)
3092 j = readw(baseAddr + Module_cnt);
3096 writew(j, baseAddr + Module_no);
3097 writew(0, baseAddr + Magic_no);
3098 for (i = 0; i < 600; i++) {
3099 if (readw(baseAddr + Magic_no) == Magic_code)
3103 if (readw(baseAddr + Magic_no) != Magic_code)
3106 moxaIntNdx[cardno] = baseAddr + IRQindex;
3107 moxaIntPend[cardno] = baseAddr + IRQpending;
3108 moxaIntTable[cardno] = baseAddr + IRQtable;
3112 long MoxaPortGetCurBaud(int port)
3115 if (moxaChkPort[port] == 0)
3117 return (moxaCurBaud[port]);
3120 static void MoxaSetFifo(int port, int enable)
3122 unsigned long ofsAddr = moxaTableAddr[port];
3125 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
3126 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
3128 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
3129 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
3134 int MoxaPortSetMode(int port, int databits, int stopbits, int parity)
3136 unsigned long ofsAddr;
3159 break; /* stop bits 1.5 */
3188 ofsAddr = moxaTableAddr[port];
3189 moxafunc(ofsAddr, FC_SetMode, val);
3193 int MoxaPortTxBufSize(int port)
3195 unsigned long ofsAddr;
3198 ofsAddr = moxaTableAddr[port];
3199 size = readw(ofsAddr + TX_mask);
3203 int MoxaPortRxBufSize(int port)
3205 unsigned long ofsAddr;
3208 ofsAddr = moxaTableAddr[port];
3209 size = readw(ofsAddr + RX_mask);
3213 int MoxaPortRxFree(int port)
3215 unsigned long ofsAddr;
3216 ushort rptr, wptr, mask;
3219 ofsAddr = moxaTableAddr[port];
3220 rptr = readw(ofsAddr + RXrptr);
3221 wptr = readw(ofsAddr + RXwptr);
3222 mask = readw(ofsAddr + RX_mask);
3223 len = mask - ((wptr - rptr) & mask);
3226 int MoxaPortGetBrkCnt(int port)
3228 return (moxaBreakCnt[port]);
3231 void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue)
3233 unsigned long ofsAddr;
3235 ofsAddr = moxaTableAddr[port];
3236 writew(xonValue, ofsAddr + FuncArg);
3237 writew(xoffValue, ofsAddr + FuncArg1);
3238 writew(FC_SetXonXoff, ofsAddr + FuncCode);
3239 wait_finish(ofsAddr);
3242 int MoxaPortIsTxHold(int port)
3244 unsigned long ofsAddr;
3247 ofsAddr = moxaTableAddr[port];
3248 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
3249 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
3250 moxafunc(ofsAddr, FC_GetCCSR, 0);
3251 val = readw(ofsAddr + FuncArg);
3255 if (readw(ofsAddr + FlagStat) & Tx_flowOff)