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);
699 static int moxa_chars_in_buffer(struct tty_struct *tty)
702 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
705 * Sigh...I have to check if driver_data is NULL here, because
706 * if an open() fails, the TTY subsystem eventually calls
707 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
708 * routine. And since the open() failed, we return 0 here. TDJ
712 chars = MoxaPortTxQueue(ch->port);
715 * Make it possible to wakeup anything waiting for output
716 * in tty_ioctl.c, etc.
718 if (!(ch->statusflags & EMPTYWAIT))
719 setup_empty_event(tty);
724 static void moxa_flush_chars(struct tty_struct *tty)
727 * Don't think I need this, because this is called to empty the TX
728 * buffer for the 16450, 16550, etc.
732 static void moxa_put_char(struct tty_struct *tty, unsigned char c)
738 ch = (struct moxa_str *) tty->driver_data;
745 MoxaPortWriteData(port, moxaXmitBuff, 1);
746 restore_flags(flags);
747 /************************************************
748 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
749 *************************************************/
750 ch->statusflags |= LOWWAIT;
753 static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
755 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
757 int flag = 0, dtr, rts;
760 if ((port != MAX_PORTS) && (!ch))
763 MoxaPortGetLineOut(ch->port, &dtr, &rts);
768 dtr = MoxaPortLineStatus(ch->port);
778 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
779 unsigned int set, unsigned int clear)
781 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
786 if ((port != MAX_PORTS) && (!ch))
789 MoxaPortGetLineOut(ch->port, &dtr, &rts);
794 if (clear & TIOCM_RTS)
796 if (clear & TIOCM_DTR)
798 MoxaPortLineCtrl(ch->port, dtr, rts);
802 static int moxa_ioctl(struct tty_struct *tty, struct file *file,
803 unsigned int cmd, unsigned long arg)
805 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
807 void __user *argp = (void __user *)arg;
811 if ((port != MAX_PORTS) && (!ch))
815 case TCSBRK: /* SVID version: non-zero arg --> no break */
816 retval = tty_check_change(tty);
819 setup_empty_event(tty);
820 tty_wait_until_sent(tty, 0);
822 MoxaPortSendBreak(ch->port, 0);
824 case TCSBRKP: /* support for POSIX tcsendbreak() */
825 retval = tty_check_change(tty);
828 setup_empty_event(tty);
829 tty_wait_until_sent(tty, 0);
830 MoxaPortSendBreak(ch->port, arg);
833 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
835 if(get_user(retval, (unsigned long __user *) argp))
838 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
841 ch->asyncflags &= ~ASYNC_CHECK_CD;
843 ch->asyncflags |= ASYNC_CHECK_CD;
846 return moxa_get_serial_info(ch, argp);
849 return moxa_set_serial_info(ch, argp);
851 retval = MoxaDriverIoctl(cmd, arg, port);
856 static void moxa_throttle(struct tty_struct *tty)
858 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
860 ch->statusflags |= THROTTLE;
863 static void moxa_unthrottle(struct tty_struct *tty)
865 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
867 ch->statusflags &= ~THROTTLE;
870 static void moxa_set_termios(struct tty_struct *tty,
871 struct termios *old_termios)
873 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
878 if (!(old_termios->c_cflag & CLOCAL) &&
879 (tty->termios->c_cflag & CLOCAL))
880 wake_up_interruptible(&ch->open_wait);
883 static void moxa_stop(struct tty_struct *tty)
885 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
889 MoxaPortTxDisable(ch->port);
890 ch->statusflags |= TXSTOPPED;
894 static void moxa_start(struct tty_struct *tty)
896 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
901 if (!(ch->statusflags & TXSTOPPED))
904 MoxaPortTxEnable(ch->port);
905 ch->statusflags &= ~TXSTOPPED;
908 static void moxa_hangup(struct tty_struct *tty)
910 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
912 moxa_flush_buffer(tty);
916 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
918 wake_up_interruptible(&ch->open_wait);
921 static void moxa_poll(unsigned long ignored)
925 struct tty_struct *tp;
929 del_timer(&moxaTimer);
931 if (MoxaDriverPoll() < 0) {
932 moxaTimer.function = moxa_poll;
933 moxaTimer.expires = jiffies + (HZ / 50);
935 add_timer(&moxaTimer);
938 for (card = 0; card < MAX_BOARDS; card++) {
939 if ((ports = MoxaPortsOfCard(card)) <= 0)
941 ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
942 for (i = 0; i < ports; i++, ch++) {
943 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
945 if (!(ch->statusflags & THROTTLE) &&
946 (MoxaPortRxQueue(ch->port) > 0))
948 if ((tp = ch->tty) == 0)
950 if (ch->statusflags & LOWWAIT) {
951 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
953 ch->statusflags &= ~LOWWAIT;
958 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
959 tty_insert_flip_char(tp, 0, TTY_BREAK);
960 tty_schedule_flip(tp);
962 if (MoxaPortDCDChange(ch->port)) {
963 if (ch->asyncflags & ASYNC_CHECK_CD) {
964 if (MoxaPortDCDON(ch->port))
965 wake_up_interruptible(&ch->open_wait);
967 set_bit(MOXA_EVENT_HANGUP, &ch->event);
968 schedule_work(&ch->tqueue);
975 moxaTimer.function = moxa_poll;
976 moxaTimer.expires = jiffies + (HZ / 50);
978 add_timer(&moxaTimer);
981 /******************************************************************************/
983 static void set_tty_param(struct tty_struct *tty)
985 register struct termios *ts;
987 int rts, cts, txflow, rxflow, xany;
989 ch = (struct moxa_str *) tty->driver_data;
991 if (ts->c_cflag & CLOCAL)
992 ch->asyncflags &= ~ASYNC_CHECK_CD;
994 ch->asyncflags |= ASYNC_CHECK_CD;
995 rts = cts = txflow = rxflow = xany = 0;
996 if (ts->c_cflag & CRTSCTS)
998 if (ts->c_iflag & IXON)
1000 if (ts->c_iflag & IXOFF)
1002 if (ts->c_iflag & IXANY)
1004 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
1005 MoxaPortSetTermio(ch->port, ts);
1008 static int block_till_ready(struct tty_struct *tty, struct file *filp,
1009 struct moxa_str *ch)
1011 DECLARE_WAITQUEUE(wait,current);
1012 unsigned long flags;
1014 int do_clocal = C_CLOCAL(tty);
1017 * If the device is in the middle of being closed, then block
1018 * until it's done, and then try again.
1020 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
1021 if (ch->asyncflags & ASYNC_CLOSING)
1022 interruptible_sleep_on(&ch->close_wait);
1023 #ifdef SERIAL_DO_RESTART
1024 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1027 return (-ERESTARTSYS);
1033 * If non-blocking mode is set, then make the check up front
1036 if (filp->f_flags & O_NONBLOCK) {
1037 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1041 * Block waiting for the carrier detect and the line to become free
1044 add_wait_queue(&ch->open_wait, &wait);
1045 #ifdef SERIAL_DEBUG_OPEN
1046 printk("block_til_ready before block: ttys%d, count = %d\n",
1047 ch->line, ch->count);
1051 if (!tty_hung_up_p(filp))
1053 restore_flags(flags);
1056 set_current_state(TASK_INTERRUPTIBLE);
1057 if (tty_hung_up_p(filp) ||
1058 !(ch->asyncflags & ASYNC_INITIALIZED)) {
1059 #ifdef SERIAL_DO_RESTART
1060 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1063 retval = -ERESTARTSYS;
1069 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
1070 MoxaPortDCDON(ch->port)))
1073 if (signal_pending(current)) {
1074 retval = -ERESTARTSYS;
1079 set_current_state(TASK_RUNNING);
1080 remove_wait_queue(&ch->open_wait, &wait);
1081 if (!tty_hung_up_p(filp))
1084 #ifdef SERIAL_DEBUG_OPEN
1085 printk("block_til_ready after blocking: ttys%d, count = %d\n",
1086 ch->line, ch->count);
1090 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1094 static void setup_empty_event(struct tty_struct *tty)
1096 struct moxa_str *ch = tty->driver_data;
1097 unsigned long flags;
1101 ch->statusflags |= EMPTYWAIT;
1102 moxaEmptyTimer_on[ch->port] = 0;
1103 del_timer(&moxaEmptyTimer[ch->port]);
1104 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1105 moxaEmptyTimer_on[ch->port] = 1;
1106 add_timer(&moxaEmptyTimer[ch->port]);
1107 restore_flags(flags);
1110 static void check_xmit_empty(unsigned long data)
1112 struct moxa_str *ch;
1114 ch = (struct moxa_str *) data;
1115 moxaEmptyTimer_on[ch->port] = 0;
1116 del_timer(&moxaEmptyTimer[ch->port]);
1117 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1118 if (MoxaPortTxQueue(ch->port) == 0) {
1119 ch->statusflags &= ~EMPTYWAIT;
1120 tty_wakeup(ch->tty);
1123 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1124 moxaEmptyTimer_on[ch->port] = 1;
1125 add_timer(&moxaEmptyTimer[ch->port]);
1127 ch->statusflags &= ~EMPTYWAIT;
1130 static void shut_down(struct moxa_str *ch)
1132 struct tty_struct *tp;
1134 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1139 MoxaPortDisable(ch->port);
1142 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1144 if (tp->termios->c_cflag & HUPCL)
1145 MoxaPortLineCtrl(ch->port, 0, 0);
1147 ch->asyncflags &= ~ASYNC_INITIALIZED;
1150 static void receive_data(struct moxa_str *ch)
1152 struct tty_struct *tp;
1154 int i, count, rc, space;
1155 unsigned char *charptr, *flagptr;
1156 unsigned long flags;
1162 /**************************************************
1163 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1164 *****************************************************/
1166 MoxaPortFlushData(ch->port, 0);
1169 space = TTY_FLIPBUF_SIZE - tp->flip.count;
1172 charptr = tp->flip.char_buf_ptr;
1173 flagptr = tp->flip.flag_buf_ptr;
1174 rc = tp->flip.count;
1177 count = MoxaPortReadData(ch->port, charptr, space);
1178 restore_flags(flags);
1179 for (i = 0; i < count; i++)
1183 tp->flip.count = rc;
1184 tp->flip.char_buf_ptr = charptr;
1185 tp->flip.flag_buf_ptr = flagptr;
1186 tty_schedule_flip(ch->tty);
1189 #define Magic_code 0x404
1192 * System Configuration
1195 * for C218 BIOS initialization
1197 #define C218_ConfBase 0x800
1198 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1199 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1200 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1201 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1202 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1203 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1204 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1205 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1206 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1207 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1209 #define C218_LoadBuf 0x0F00
1210 #define C218_KeyCode 0x218
1211 #define CP204J_KeyCode 0x204
1214 * for C320 BIOS initialization
1216 #define C320_ConfBase 0x800
1217 #define C320_LoadBuf 0x0f00
1218 #define STS_init 0x05 /* for C320_status */
1220 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1221 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1222 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1223 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1224 #define C320check_sum C320_ConfBase + 8 /* WORD */
1225 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1226 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1227 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1229 #define C320_KeyCode 0x320
1231 #define FixPage_addr 0x0000 /* starting addr of static page */
1232 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1233 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1234 #define Control_reg 0x1ff0 /* select page and reset control */
1235 #define HW_reset 0x80
1240 #define FC_CardReset 0x80
1241 #define FC_ChannelReset 1 /* C320 firmware not supported */
1242 #define FC_EnableCH 2
1243 #define FC_DisableCH 3
1244 #define FC_SetParam 4
1245 #define FC_SetMode 5
1246 #define FC_SetRate 6
1247 #define FC_LineControl 7
1248 #define FC_LineStatus 8
1249 #define FC_XmitControl 9
1250 #define FC_FlushQueue 10
1251 #define FC_SendBreak 11
1252 #define FC_StopBreak 12
1253 #define FC_LoopbackON 13
1254 #define FC_LoopbackOFF 14
1255 #define FC_ClrIrqTable 15
1256 #define FC_SendXon 16
1257 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1258 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1259 #define FC_SetBreakIrq 19
1260 #define FC_SetLineIrq 20
1261 #define FC_SetFlowCtl 21
1262 #define FC_GenIrq 22
1263 #define FC_InCD180 23
1264 #define FC_OutCD180 24
1265 #define FC_InUARTreg 23
1266 #define FC_OutUARTreg 24
1267 #define FC_SetXonXoff 25
1268 #define FC_OutCD180CCR 26
1269 #define FC_ExtIQueue 27
1270 #define FC_ExtOQueue 28
1271 #define FC_ClrLineIrq 29
1272 #define FC_HWFlowCtl 30
1273 #define FC_GetClockRate 35
1274 #define FC_SetBaud 36
1275 #define FC_SetDataMode 41
1276 #define FC_GetCCSR 43
1277 #define FC_GetDataError 45
1278 #define FC_RxControl 50
1279 #define FC_ImmSend 51
1280 #define FC_SetXonState 52
1281 #define FC_SetXoffState 53
1282 #define FC_SetRxFIFOTrig 54
1283 #define FC_SetTxFIFOCnt 55
1284 #define FC_UnixRate 56
1285 #define FC_UnixResetTimer 57
1287 #define RxFIFOTrig1 0
1288 #define RxFIFOTrig4 1
1289 #define RxFIFOTrig8 2
1290 #define RxFIFOTrig14 3
1295 #define DRAM_global 0
1296 #define INT_data (DRAM_global + 0)
1297 #define Config_base (DRAM_global + 0x108)
1299 #define IRQindex (INT_data + 0)
1300 #define IRQpending (INT_data + 4)
1301 #define IRQtable (INT_data + 8)
1306 #define IntrRx 0x01 /* receiver data O.K. */
1307 #define IntrTx 0x02 /* transmit buffer empty */
1308 #define IntrFunc 0x04 /* function complete */
1309 #define IntrBreak 0x08 /* received break */
1310 #define IntrLine 0x10 /* line status change
1312 #define IntrIntr 0x20 /* received INTR code */
1313 #define IntrQuit 0x40 /* received QUIT code */
1314 #define IntrEOF 0x80 /* received EOF code */
1316 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1317 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1319 #define Magic_no (Config_base + 0)
1320 #define Card_model_no (Config_base + 2)
1321 #define Total_ports (Config_base + 4)
1322 #define Module_cnt (Config_base + 8)
1323 #define Module_no (Config_base + 10)
1324 #define Timer_10ms (Config_base + 14)
1325 #define Disable_IRQ (Config_base + 20)
1326 #define TMS320_PORT1 (Config_base + 22)
1327 #define TMS320_PORT2 (Config_base + 24)
1328 #define TMS320_CLOCK (Config_base + 26)
1331 * DATA BUFFER in DRAM
1333 #define Extern_table 0x400 /* Base address of the external table
1334 (24 words * 64) total 3K bytes
1335 (24 words * 128) total 6K bytes */
1336 #define Extern_size 0x60 /* 96 bytes */
1337 #define RXrptr 0x00 /* read pointer for RX buffer */
1338 #define RXwptr 0x02 /* write pointer for RX buffer */
1339 #define TXrptr 0x04 /* read pointer for TX buffer */
1340 #define TXwptr 0x06 /* write pointer for TX buffer */
1341 #define HostStat 0x08 /* IRQ flag and general flag */
1342 #define FlagStat 0x0A
1343 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1344 /* x x x x | | | | */
1345 /* | | | + CTS flow */
1346 /* | | +--- RTS flow */
1347 /* | +------ TX Xon/Xoff */
1348 /* +--------- RX Xon/Xoff */
1349 #define Break_cnt 0x0E /* received break count */
1350 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1351 #define RX_mask 0x12
1352 #define TX_mask 0x14
1353 #define Ofs_rxb 0x16
1354 #define Ofs_txb 0x18
1355 #define Page_rxb 0x1A
1356 #define Page_txb 0x1C
1357 #define EndPage_rxb 0x1E
1358 #define EndPage_txb 0x20
1359 #define Data_error 0x22
1360 #define RxTrigger 0x28
1361 #define TxTrigger 0x2a
1363 #define rRXwptr 0x34
1364 #define Low_water 0x36
1366 #define FuncCode 0x40
1367 #define FuncArg 0x42
1368 #define FuncArg1 0x44
1370 #define C218rx_size 0x2000 /* 8K bytes */
1371 #define C218tx_size 0x8000 /* 32K bytes */
1373 #define C218rx_mask (C218rx_size - 1)
1374 #define C218tx_mask (C218tx_size - 1)
1376 #define C320p8rx_size 0x2000
1377 #define C320p8tx_size 0x8000
1378 #define C320p8rx_mask (C320p8rx_size - 1)
1379 #define C320p8tx_mask (C320p8tx_size - 1)
1381 #define C320p16rx_size 0x2000
1382 #define C320p16tx_size 0x4000
1383 #define C320p16rx_mask (C320p16rx_size - 1)
1384 #define C320p16tx_mask (C320p16tx_size - 1)
1386 #define C320p24rx_size 0x2000
1387 #define C320p24tx_size 0x2000
1388 #define C320p24rx_mask (C320p24rx_size - 1)
1389 #define C320p24tx_mask (C320p24tx_size - 1)
1391 #define C320p32rx_size 0x1000
1392 #define C320p32tx_size 0x1000
1393 #define C320p32rx_mask (C320p32rx_size - 1)
1394 #define C320p32tx_mask (C320p32tx_size - 1)
1396 #define Page_size 0x2000
1397 #define Page_mask (Page_size - 1)
1398 #define C218rx_spage 3
1399 #define C218tx_spage 4
1400 #define C218rx_pageno 1
1401 #define C218tx_pageno 4
1402 #define C218buf_pageno 5
1404 #define C320p8rx_spage 3
1405 #define C320p8tx_spage 4
1406 #define C320p8rx_pgno 1
1407 #define C320p8tx_pgno 4
1408 #define C320p8buf_pgno 5
1410 #define C320p16rx_spage 3
1411 #define C320p16tx_spage 4
1412 #define C320p16rx_pgno 1
1413 #define C320p16tx_pgno 2
1414 #define C320p16buf_pgno 3
1416 #define C320p24rx_spage 3
1417 #define C320p24tx_spage 4
1418 #define C320p24rx_pgno 1
1419 #define C320p24tx_pgno 1
1420 #define C320p24buf_pgno 2
1422 #define C320p32rx_spage 3
1423 #define C320p32tx_ofs C320p32rx_size
1424 #define C320p32tx_spage 3
1425 #define C320p32buf_pgno 1
1430 #define WakeupRx 0x01
1431 #define WakeupTx 0x02
1432 #define WakeupBreak 0x08
1433 #define WakeupLine 0x10
1434 #define WakeupIntr 0x20
1435 #define WakeupQuit 0x40
1436 #define WakeupEOF 0x80 /* used in VTIME control */
1437 #define WakeupRxTrigger 0x100
1438 #define WakeupTxTrigger 0x200
1442 #define Rx_over 0x01
1443 #define Xoff_state 0x02
1444 #define Tx_flowOff 0x04
1445 #define Tx_enable 0x08
1446 #define CTS_state 0x10
1447 #define DSR_state 0x20
1448 #define DCD_state 0x80
1452 #define CTS_FlowCtl 1
1453 #define RTS_FlowCtl 2
1454 #define Tx_FlowCtl 4
1455 #define Rx_FlowCtl 8
1456 #define IXM_IXANY 0x10
1458 #define LowWater 128
1466 /* mode definition */
1472 #define MX_STOP1 0x00
1473 #define MX_STOP15 0x04
1474 #define MX_STOP2 0x08
1476 #define MX_PARNONE 0x00
1477 #define MX_PAREVEN 0x40
1478 #define MX_PARODD 0xC0
1483 #define QueryPort MAX_PORTS
1489 int rxcnt[MAX_PORTS];
1490 int txcnt[MAX_PORTS];
1492 typedef struct mon_str mon_st;
1494 #define DCD_changed 0x01
1495 #define DCD_oldstate 0x80
1497 static unsigned char moxaBuff[10240];
1498 static unsigned long moxaIntNdx[MAX_BOARDS];
1499 static unsigned long moxaIntPend[MAX_BOARDS];
1500 static unsigned long moxaIntTable[MAX_BOARDS];
1501 static char moxaChkPort[MAX_PORTS];
1502 static char moxaLineCtrl[MAX_PORTS];
1503 static unsigned long moxaTableAddr[MAX_PORTS];
1504 static long moxaCurBaud[MAX_PORTS];
1505 static char moxaDCDState[MAX_PORTS];
1506 static char moxaLowChkFlag[MAX_PORTS];
1507 static int moxaLowWaterChk;
1508 static int moxaCard;
1509 static mon_st moxaLog;
1510 static int moxaFuncTout;
1511 static ushort moxaBreakCnt[MAX_PORTS];
1513 static void moxadelay(int);
1514 static void moxafunc(unsigned long, int, ushort);
1515 static void wait_finish(unsigned long);
1516 static void low_water_check(unsigned long);
1517 static int moxaloadbios(int, unsigned char __user *, int);
1518 static int moxafindcard(int);
1519 static int moxaload320b(int, unsigned char __user *, int);
1520 static int moxaloadcode(int, unsigned char __user *, int);
1521 static int moxaloadc218(int, unsigned long, int);
1522 static int moxaloadc320(int, unsigned long, int, int *);
1524 /*****************************************************************************
1525 * Driver level functions: *
1526 * 1. MoxaDriverInit(void); *
1527 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1528 * 3. MoxaDriverPoll(void); *
1529 *****************************************************************************/
1530 void MoxaDriverInit(void)
1534 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1537 moxaLowWaterChk = 0;
1538 for (i = 0; i < MAX_PORTS; i++) {
1540 moxaLowChkFlag[i] = 0;
1541 moxaLineCtrl[i] = 0;
1542 moxaLog.rxcnt[i] = 0;
1543 moxaLog.txcnt[i] = 0;
1548 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1549 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1550 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1551 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1552 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1553 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1554 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1555 #define MOXA_GETDATACOUNT (MOXA + 23)
1556 #define MOXA_GET_IOQUEUE (MOXA + 27)
1557 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1558 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1559 #define MOXA_GET_MAJOR (MOXA + 63)
1560 #define MOXA_GET_CUMAJOR (MOXA + 64)
1561 #define MOXA_GETMSTATUS (MOXA + 65)
1575 static struct moxaq_str temp_queue[MAX_PORTS];
1576 static struct dl_str dltmp;
1578 void MoxaPortFlushData(int port, int mode)
1580 unsigned long ofsAddr;
1581 if ((mode < 0) || (mode > 2))
1583 ofsAddr = moxaTableAddr[port];
1584 moxafunc(ofsAddr, FC_FlushQueue, mode);
1586 moxaLowChkFlag[port] = 0;
1587 low_water_check(ofsAddr);
1591 int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1595 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1596 void __user *argp = (void __user *)arg;
1598 if (port == QueryPort) {
1599 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1600 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1601 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1602 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1603 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1608 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS * sizeof(moxa_board_conf)))
1611 case MOXA_INIT_DRIVER:
1612 if ((int) arg == 0x404)
1615 case MOXA_GETDATACOUNT:
1616 moxaLog.tick = jiffies;
1617 if(copy_to_user(argp, &moxaLog, sizeof(mon_st)))
1620 case MOXA_FLUSH_QUEUE:
1621 MoxaPortFlushData(port, arg);
1623 case MOXA_GET_IOQUEUE:
1624 for (i = 0; i < MAX_PORTS; i++) {
1625 if (moxaChkPort[i]) {
1626 temp_queue[i].inq = MoxaPortRxQueue(i);
1627 temp_queue[i].outq = MoxaPortTxQueue(i);
1630 if(copy_to_user(argp, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
1633 case MOXA_GET_OQUEUE:
1634 i = MoxaPortTxQueue(port);
1635 return put_user(i, (unsigned long __user *)argp);
1636 case MOXA_GET_IQUEUE:
1637 i = MoxaPortRxQueue(port);
1638 return put_user(i, (unsigned long __user *)argp);
1639 case MOXA_GET_MAJOR:
1640 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1643 case MOXA_GET_CUMAJOR:
1645 if(copy_to_user(argp, &i, sizeof(int)))
1648 case MOXA_GETMSTATUS:
1649 for (i = 0; i < MAX_PORTS; i++) {
1651 GMStatus[i].dcd = 0;
1652 GMStatus[i].dsr = 0;
1653 GMStatus[i].cts = 0;
1654 if (!moxaChkPort[i]) {
1657 status = MoxaPortLineStatus(moxaChannels[i].port);
1659 GMStatus[i].cts = 1;
1661 GMStatus[i].dsr = 1;
1663 GMStatus[i].dcd = 1;
1666 if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
1667 GMStatus[i].cflag = moxaChannels[i].cflag;
1669 GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
1671 if(copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
1675 return (-ENOIOCTLCMD);
1676 case MOXA_LOAD_BIOS:
1677 case MOXA_FIND_BOARD:
1678 case MOXA_LOAD_C320B:
1679 case MOXA_LOAD_CODE:
1683 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1685 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
1690 case MOXA_LOAD_BIOS:
1691 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1693 case MOXA_FIND_BOARD:
1694 return moxafindcard(dltmp.cardno);
1695 case MOXA_LOAD_C320B:
1696 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1697 default: /* to keep gcc happy */
1699 case MOXA_LOAD_CODE:
1700 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1708 int MoxaDriverPoll(void)
1710 register ushort temp;
1712 unsigned long ip, ofsAddr;
1717 for (card = 0; card < MAX_BOARDS; card++) {
1718 if ((ports = moxa_boards[card].numPorts) == 0)
1720 if (readb(moxaIntPend[card]) == 0xff) {
1721 ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
1722 p = card * MAX_PORTS_PER_BOARD;
1724 for (port = 0; port < ports; port += 2, p++) {
1725 if ((temp = readw(ip + port)) != 0) {
1726 writew(0, ip + port);
1727 ofsAddr = moxaTableAddr[p];
1729 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1730 if (temp & IntrBreak) {
1733 if (temp & IntrLine) {
1734 if (readb(ofsAddr + FlagStat) & DCD_state) {
1735 if ((moxaDCDState[p] & DCD_oldstate) == 0)
1736 moxaDCDState[p] = (DCD_oldstate |
1739 if (moxaDCDState[p] & DCD_oldstate)
1740 moxaDCDState[p] = DCD_changed;
1745 writeb(0, moxaIntPend[card]);
1747 if (moxaLowWaterChk) {
1748 p = card * MAX_PORTS_PER_BOARD;
1749 for (port = 0; port < ports; port++, p++) {
1750 if (moxaLowChkFlag[p]) {
1751 moxaLowChkFlag[p] = 0;
1752 ofsAddr = moxaTableAddr[p];
1753 low_water_check(ofsAddr);
1758 moxaLowWaterChk = 0;
1762 /*****************************************************************************
1763 * Card level function: *
1764 * 1. MoxaPortsOfCard(int cardno); *
1765 *****************************************************************************/
1766 int MoxaPortsOfCard(int cardno)
1769 if (moxa_boards[cardno].boardType == 0)
1771 return (moxa_boards[cardno].numPorts);
1774 /*****************************************************************************
1775 * Port level functions: *
1776 * 1. MoxaPortIsValid(int port); *
1777 * 2. MoxaPortEnable(int port); *
1778 * 3. MoxaPortDisable(int port); *
1779 * 4. MoxaPortGetMaxBaud(int port); *
1780 * 5. MoxaPortGetCurBaud(int port); *
1781 * 6. MoxaPortSetBaud(int port, long baud); *
1782 * 7. MoxaPortSetMode(int port, int databit, int stopbit, int parity); *
1783 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1784 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1785 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1786 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1787 * 12. MoxaPortLineStatus(int port); *
1788 * 13. MoxaPortDCDChange(int port); *
1789 * 14. MoxaPortDCDON(int port); *
1790 * 15. MoxaPortFlushData(int port, int mode); *
1791 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1792 * 17. MoxaPortReadData(int port, unsigned char * buffer, int length); *
1793 * 18. MoxaPortTxBufSize(int port); *
1794 * 19. MoxaPortRxBufSize(int port); *
1795 * 20. MoxaPortTxQueue(int port); *
1796 * 21. MoxaPortTxFree(int port); *
1797 * 22. MoxaPortRxQueue(int port); *
1798 * 23. MoxaPortRxFree(int port); *
1799 * 24. MoxaPortTxDisable(int port); *
1800 * 25. MoxaPortTxEnable(int port); *
1801 * 26. MoxaPortGetBrkCnt(int port); *
1802 * 27. MoxaPortResetBrkCnt(int port); *
1803 * 28. MoxaPortSetXonXoff(int port, int xonValue, int xoffValue); *
1804 * 29. MoxaPortIsTxHold(int port); *
1805 * 30. MoxaPortSendBreak(int port, int ticks); *
1806 *****************************************************************************/
1808 * Moxa Port Number Description:
1810 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1811 * the port number using in MOXA driver functions will be 0 to 31 for
1812 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1813 * to 127 for fourth. For example, if you setup three MOXA boards,
1814 * first board is C218, second board is C320-16 and third board is
1815 * C320-32. The port number of first board (C218 - 8 ports) is from
1816 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1817 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1818 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1819 * 127 will be invalid.
1822 * Moxa Functions Description:
1824 * Function 1: Driver initialization routine, this routine must be
1825 * called when initialized driver.
1827 * void MoxaDriverInit();
1830 * Function 2: Moxa driver private IOCTL command processing.
1832 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1834 * unsigned int cmd : IOCTL command
1835 * unsigned long arg : IOCTL argument
1836 * int port : port number (0 - 127)
1843 * Function 3: Moxa driver polling process routine.
1845 * int MoxaDriverPoll(void);
1847 * return: 0 ; polling O.K.
1848 * -1 : no any Moxa card.
1851 * Function 4: Get the ports of this card.
1853 * int MoxaPortsOfCard(int cardno);
1855 * int cardno : card number (0 - 3)
1857 * return: 0 : this card is invalid
1861 * Function 5: Check this port is valid or invalid
1863 * int MoxaPortIsValid(int port);
1864 * int port : port number (0 - 127, ref port description)
1866 * return: 0 : this port is invalid
1867 * 1 : this port is valid
1870 * Function 6: Enable this port to start Tx/Rx data.
1872 * void MoxaPortEnable(int port);
1873 * int port : port number (0 - 127)
1876 * Function 7: Disable this port
1878 * void MoxaPortDisable(int port);
1879 * int port : port number (0 - 127)
1882 * Function 8: Get the maximun available baud rate of this port.
1884 * long MoxaPortGetMaxBaud(int port);
1885 * int port : port number (0 - 127)
1887 * return: 0 : this port is invalid
1888 * 38400/57600/115200 bps
1891 * Function 9: Get the current baud rate of this port.
1893 * long MoxaPortGetCurBaud(int port);
1894 * int port : port number (0 - 127)
1896 * return: 0 : this port is invalid
1900 * Function 10: Setting baud rate of this port.
1902 * long MoxaPortSetBaud(int port, long baud);
1903 * int port : port number (0 - 127)
1904 * long baud : baud rate (50 - 115200)
1906 * return: 0 : this port is invalid or baud < 50
1907 * 50 - 115200 : the real baud rate set to the port, if
1908 * the argument baud is large than maximun
1909 * available baud rate, the real setting
1910 * baud rate will be the maximun baud rate.
1913 * Function 11: Setting the data-bits/stop-bits/parity of this port
1915 * int MoxaPortSetMode(int port, int databits, int stopbits, int parity);
1916 * int port : port number (0 - 127)
1917 * int databits : data bits (8/7/6/5)
1918 * int stopbits : stop bits (2/1/0, 0 show 1.5 stop bits)
1919 int parity : parity (0:None,1:Odd,2:Even,3:Mark,4:Space)
1921 * return: -1 : invalid parameter
1925 * Function 12: Configure the port.
1927 * int MoxaPortSetTermio(int port, struct termios *termio);
1928 * int port : port number (0 - 127)
1929 * struct termios * termio : termio structure pointer
1931 * return: -1 : this port is invalid or termio == NULL
1935 * Function 13: Get the DTR/RTS state of this port.
1937 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1938 * int port : port number (0 - 127)
1939 * int * dtrState : pointer to INT to receive the current DTR
1940 * state. (if NULL, this function will not
1941 * write to this address)
1942 * int * rtsState : pointer to INT to receive the current RTS
1943 * state. (if NULL, this function will not
1944 * write to this address)
1946 * return: -1 : this port is invalid
1950 * Function 14: Setting the DTR/RTS output state of this port.
1952 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1953 * int port : port number (0 - 127)
1954 * int dtrState : DTR output state (0: off, 1: on)
1955 * int rtsState : RTS output state (0: off, 1: on)
1958 * Function 15: Setting the flow control of this port.
1960 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1961 * int txFlow,int xany);
1962 * int port : port number (0 - 127)
1963 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1964 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1965 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1966 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1967 * int xany : S/W XANY flow control (0: no, 1: yes)
1970 * Function 16: Get ths line status of this port
1972 * int MoxaPortLineStatus(int port);
1973 * int port : port number (0 - 127)
1975 * return: Bit 0 - CTS state (0: off, 1: on)
1976 * Bit 1 - DSR state (0: off, 1: on)
1977 * Bit 2 - DCD state (0: off, 1: on)
1980 * Function 17: Check the DCD state has changed since the last read
1983 * int MoxaPortDCDChange(int port);
1984 * int port : port number (0 - 127)
1986 * return: 0 : no changed
1987 * 1 : DCD has changed
1990 * Function 18: Check ths current DCD state is ON or not.
1992 * int MoxaPortDCDON(int port);
1993 * int port : port number (0 - 127)
1995 * return: 0 : DCD off
1999 * Function 19: Flush the Rx/Tx buffer data of this port.
2001 * void MoxaPortFlushData(int port, int mode);
2002 * int port : port number (0 - 127)
2004 * 0 : flush the Rx buffer
2005 * 1 : flush the Tx buffer
2006 * 2 : flush the Rx and Tx buffer
2009 * Function 20: Write data.
2011 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
2012 * int port : port number (0 - 127)
2013 * unsigned char * buffer : pointer to write data buffer.
2014 * int length : write data length
2016 * return: 0 - length : real write data length
2019 * Function 21: Read data.
2021 * int MoxaPortReadData(int port, unsigned char * buffer, int length);
2022 * int port : port number (0 - 127)
2023 * unsigned char * buffer : pointer to read data buffer.
2024 * int length : read data buffer length
2026 * return: 0 - length : real read data length
2029 * Function 22: Get the Tx buffer size of this port
2031 * int MoxaPortTxBufSize(int port);
2032 * int port : port number (0 - 127)
2034 * return: .. : Tx buffer size
2037 * Function 23: Get the Rx buffer size of this port
2039 * int MoxaPortRxBufSize(int port);
2040 * int port : port number (0 - 127)
2042 * return: .. : Rx buffer size
2045 * Function 24: Get the Tx buffer current queued data bytes
2047 * int MoxaPortTxQueue(int port);
2048 * int port : port number (0 - 127)
2050 * return: .. : Tx buffer current queued data bytes
2053 * Function 25: Get the Tx buffer current free space
2055 * int MoxaPortTxFree(int port);
2056 * int port : port number (0 - 127)
2058 * return: .. : Tx buffer current free space
2061 * Function 26: Get the Rx buffer current queued data bytes
2063 * int MoxaPortRxQueue(int port);
2064 * int port : port number (0 - 127)
2066 * return: .. : Rx buffer current queued data bytes
2069 * Function 27: Get the Rx buffer current free space
2071 * int MoxaPortRxFree(int port);
2072 * int port : port number (0 - 127)
2074 * return: .. : Rx buffer current free space
2077 * Function 28: Disable port data transmission.
2079 * void MoxaPortTxDisable(int port);
2080 * int port : port number (0 - 127)
2083 * Function 29: Enable port data transmission.
2085 * void MoxaPortTxEnable(int port);
2086 * int port : port number (0 - 127)
2089 * Function 30: Get the received BREAK signal count.
2091 * int MoxaPortGetBrkCnt(int port);
2092 * int port : port number (0 - 127)
2094 * return: 0 - .. : BREAK signal count
2097 * Function 31: Get the received BREAK signal count and reset it.
2099 * int MoxaPortResetBrkCnt(int port);
2100 * int port : port number (0 - 127)
2102 * return: 0 - .. : BREAK signal count
2105 * Function 32: Set the S/W flow control new XON/XOFF value, default
2106 * XON is 0x11 & XOFF is 0x13.
2108 * void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue);
2109 * int port : port number (0 - 127)
2110 * int xonValue : new XON value (0 - 255)
2111 * int xoffValue : new XOFF value (0 - 255)
2114 * Function 33: Check this port's transmission is hold by remote site
2115 * because the flow control.
2117 * int MoxaPortIsTxHold(int port);
2118 * int port : port number (0 - 127)
2120 * return: 0 : normal
2121 * 1 : hold by remote site
2124 * Function 34: Send out a BREAK signal.
2126 * void MoxaPortSendBreak(int port, int ms100);
2127 * int port : port number (0 - 127)
2128 * int ms100 : break signal time interval.
2129 * unit: 100 mini-second. if ms100 == 0, it will
2130 * send out a about 250 ms BREAK signal.
2133 int MoxaPortIsValid(int port)
2138 if (moxaChkPort[port] == 0)
2143 void MoxaPortEnable(int port)
2145 unsigned long ofsAddr;
2146 int MoxaPortLineStatus(int);
2147 short lowwater = 512;
2149 ofsAddr = moxaTableAddr[port];
2150 writew(lowwater, ofsAddr + Low_water);
2151 moxaBreakCnt[port] = 0;
2152 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2153 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2154 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
2156 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
2159 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
2160 moxafunc(ofsAddr, FC_FlushQueue, 2);
2162 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
2163 MoxaPortLineStatus(port);
2166 void MoxaPortDisable(int port)
2168 unsigned long ofsAddr;
2170 ofsAddr = moxaTableAddr[port];
2171 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
2172 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
2173 writew(0, ofsAddr + HostStat);
2174 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
2177 long MoxaPortGetMaxBaud(int port)
2179 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2180 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
2187 long MoxaPortSetBaud(int port, long baud)
2189 unsigned long ofsAddr;
2193 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
2195 ofsAddr = moxaTableAddr[port];
2199 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2200 else if (max == 57600L)
2201 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2203 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2205 moxafunc(ofsAddr, FC_SetBaud, val);
2207 moxaCurBaud[port] = baud;
2211 int MoxaPortSetTermio(int port, struct termios *termio)
2213 unsigned long ofsAddr;
2218 if (moxaChkPort[port] == 0 || termio == 0)
2220 ofsAddr = moxaTableAddr[port];
2221 cflag = termio->c_cflag; /* termio->c_cflag */
2223 mode = termio->c_cflag & CSIZE;
2226 else if (mode == CS6)
2228 else if (mode == CS7)
2230 else if (mode == CS8)
2233 if (termio->c_cflag & CSTOPB) {
2241 if (termio->c_cflag & PARENB) {
2242 if (termio->c_cflag & PARODD)
2249 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2251 cflag &= (CBAUD | CBAUDEX);
2253 #define B921600 (B460800+1)
2319 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2320 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2321 if (baud == 921600L)
2324 MoxaPortSetBaud(port, baud);
2326 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2327 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2328 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2329 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2330 wait_finish(ofsAddr);
2336 int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2339 if (!MoxaPortIsValid(port))
2342 if (moxaLineCtrl[port] & DTR_ON)
2348 if (moxaLineCtrl[port] & RTS_ON)
2356 void MoxaPortLineCtrl(int port, int dtr, int rts)
2358 unsigned long ofsAddr;
2361 ofsAddr = moxaTableAddr[port];
2367 moxaLineCtrl[port] = mode;
2368 moxafunc(ofsAddr, FC_LineControl, mode);
2371 void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2373 unsigned long ofsAddr;
2376 ofsAddr = moxaTableAddr[port];
2379 mode |= RTS_FlowCtl;
2381 mode |= CTS_FlowCtl;
2388 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2391 int MoxaPortLineStatus(int port)
2393 unsigned long ofsAddr;
2396 ofsAddr = moxaTableAddr[port];
2397 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2398 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2399 moxafunc(ofsAddr, FC_LineStatus, 0);
2400 val = readw(ofsAddr + FuncArg);
2402 val = readw(ofsAddr + FlagStat) >> 4;
2407 if ((moxaDCDState[port] & DCD_oldstate) == 0)
2408 moxaDCDState[port] = (DCD_oldstate | DCD_changed);
2410 if (moxaDCDState[port] & DCD_oldstate)
2411 moxaDCDState[port] = DCD_changed;
2417 int MoxaPortDCDChange(int port)
2421 if (moxaChkPort[port] == 0)
2423 n = moxaDCDState[port];
2424 moxaDCDState[port] &= ~DCD_changed;
2429 int MoxaPortDCDON(int port)
2433 if (moxaChkPort[port] == 0)
2435 if (moxaDCDState[port] & DCD_oldstate)
2444 int MoxaDumpMem(int port, unsigned char * buffer, int len)
2447 unsigned long baseAddr,ofsAddr,ofs;
2449 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2450 ofs = baseAddr + DynPage_addr + pageofs;
2453 for (i = 0; i < len; i++)
2454 buffer[i] = readb(ofs+i);
2459 int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2464 ushort head, tx_mask, spage, epage;
2465 ushort pageno, pageofs, bufhead;
2466 unsigned long baseAddr, ofsAddr, ofs;
2468 ofsAddr = moxaTableAddr[port];
2469 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2470 tx_mask = readw(ofsAddr + TX_mask);
2471 spage = readw(ofsAddr + Page_txb);
2472 epage = readw(ofsAddr + EndPage_txb);
2473 tail = readw(ofsAddr + TXwptr);
2474 head = readw(ofsAddr + TXrptr);
2475 c = (head > tail) ? (head - tail - 1)
2476 : (head - tail + tx_mask);
2479 moxaLog.txcnt[port] += c;
2481 if (spage == epage) {
2482 bufhead = readw(ofsAddr + Ofs_txb);
2483 writew(spage, baseAddr + Control_reg);
2486 len = head - tail - 1;
2488 len = tx_mask + 1 - tail;
2489 len = (c > len) ? len : c;
2490 ofs = baseAddr + DynPage_addr + bufhead + tail;
2491 for (i = 0; i < len; i++)
2492 writeb(*buffer++, ofs + i);
2493 tail = (tail + len) & tx_mask;
2496 writew(tail, ofsAddr + TXwptr);
2499 pageno = spage + (tail >> 13);
2500 pageofs = tail & Page_mask;
2502 cnt = Page_size - pageofs;
2506 writeb(pageno, baseAddr + Control_reg);
2507 ofs = baseAddr + DynPage_addr + pageofs;
2508 for (i = 0; i < cnt; i++)
2509 writeb(*buffer++, ofs + i);
2511 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2514 if (++pageno == epage)
2519 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2523 int MoxaPortReadData(int port, unsigned char * buffer, int space)
2525 register ushort head, pageofs;
2526 int i, count, cnt, len, total, remain;
2527 ushort tail, rx_mask, spage, epage;
2528 ushort pageno, bufhead;
2529 unsigned long baseAddr, ofsAddr, ofs;
2531 ofsAddr = moxaTableAddr[port];
2532 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2533 head = readw(ofsAddr + RXrptr);
2534 tail = readw(ofsAddr + RXwptr);
2535 rx_mask = readw(ofsAddr + RX_mask);
2536 spage = readw(ofsAddr + Page_rxb);
2537 epage = readw(ofsAddr + EndPage_rxb);
2538 count = (tail >= head) ? (tail - head)
2539 : (tail - head + rx_mask + 1);
2543 total = (space > count) ? count : space;
2544 remain = count - total;
2545 moxaLog.rxcnt[port] += total;
2547 if (spage == epage) {
2548 bufhead = readw(ofsAddr + Ofs_rxb);
2549 writew(spage, baseAddr + Control_reg);
2554 len = rx_mask + 1 - head;
2555 len = (count > len) ? len : count;
2556 ofs = baseAddr + DynPage_addr + bufhead + head;
2557 for (i = 0; i < len; i++)
2558 *buffer++ = readb(ofs + i);
2559 head = (head + len) & rx_mask;
2562 writew(head, ofsAddr + RXrptr);
2565 pageno = spage + (head >> 13);
2566 pageofs = head & Page_mask;
2568 cnt = Page_size - pageofs;
2572 writew(pageno, baseAddr + Control_reg);
2573 ofs = baseAddr + DynPage_addr + pageofs;
2574 for (i = 0; i < cnt; i++)
2575 *buffer++ = readb(ofs + i);
2577 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2580 if (++pageno == epage)
2585 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2586 moxaLowWaterChk = 1;
2587 moxaLowChkFlag[port] = 1;
2593 int MoxaPortTxQueue(int port)
2595 unsigned long ofsAddr;
2596 ushort rptr, wptr, mask;
2599 ofsAddr = moxaTableAddr[port];
2600 rptr = readw(ofsAddr + TXrptr);
2601 wptr = readw(ofsAddr + TXwptr);
2602 mask = readw(ofsAddr + TX_mask);
2603 len = (wptr - rptr) & mask;
2607 int MoxaPortTxFree(int port)
2609 unsigned long ofsAddr;
2610 ushort rptr, wptr, mask;
2613 ofsAddr = moxaTableAddr[port];
2614 rptr = readw(ofsAddr + TXrptr);
2615 wptr = readw(ofsAddr + TXwptr);
2616 mask = readw(ofsAddr + TX_mask);
2617 len = mask - ((wptr - rptr) & mask);
2621 int MoxaPortRxQueue(int port)
2623 unsigned long ofsAddr;
2624 ushort rptr, wptr, mask;
2627 ofsAddr = moxaTableAddr[port];
2628 rptr = readw(ofsAddr + RXrptr);
2629 wptr = readw(ofsAddr + RXwptr);
2630 mask = readw(ofsAddr + RX_mask);
2631 len = (wptr - rptr) & mask;
2636 void MoxaPortTxDisable(int port)
2638 unsigned long ofsAddr;
2640 ofsAddr = moxaTableAddr[port];
2641 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2644 void MoxaPortTxEnable(int port)
2646 unsigned long ofsAddr;
2648 ofsAddr = moxaTableAddr[port];
2649 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2653 int MoxaPortResetBrkCnt(int port)
2656 cnt = moxaBreakCnt[port];
2657 moxaBreakCnt[port] = 0;
2662 void MoxaPortSendBreak(int port, int ms100)
2664 unsigned long ofsAddr;
2666 ofsAddr = moxaTableAddr[port];
2668 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2669 moxadelay(ms100 * (HZ / 10));
2671 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2672 moxadelay(HZ / 4); /* 250 ms */
2674 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2677 static int moxa_get_serial_info(struct moxa_str *info,
2678 struct serial_struct __user *retinfo)
2680 struct serial_struct tmp;
2682 memset(&tmp, 0, sizeof(tmp));
2683 tmp.type = info->type;
2684 tmp.line = info->port;
2687 tmp.flags = info->asyncflags;
2688 tmp.baud_base = 921600;
2689 tmp.close_delay = info->close_delay;
2690 tmp.closing_wait = info->closing_wait;
2691 tmp.custom_divisor = 0;
2693 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2699 static int moxa_set_serial_info(struct moxa_str *info,
2700 struct serial_struct __user *new_info)
2702 struct serial_struct new_serial;
2704 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2707 if ((new_serial.irq != 0) ||
2708 (new_serial.port != 0) ||
2709 // (new_serial.type != info->type) ||
2710 (new_serial.custom_divisor != 0) ||
2711 (new_serial.baud_base != 921600))
2714 if (!capable(CAP_SYS_ADMIN)) {
2715 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2716 (info->asyncflags & ~ASYNC_USR_MASK)))
2719 info->close_delay = new_serial.close_delay * HZ / 100;
2720 info->closing_wait = new_serial.closing_wait * HZ / 100;
2723 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2724 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2726 if (new_serial.type == PORT_16550A) {
2727 MoxaSetFifo(info->port, 1);
2729 MoxaSetFifo(info->port, 0);
2732 info->type = new_serial.type;
2738 /*****************************************************************************
2739 * Static local functions: *
2740 *****************************************************************************/
2742 * moxadelay - delays a specified number ticks
2744 static void moxadelay(int tick)
2746 unsigned long st, et;
2750 while (time_before(jiffies, et));
2753 static void moxafunc(unsigned long ofsAddr, int cmd, ushort arg)
2756 writew(arg, ofsAddr + FuncArg);
2757 writew(cmd, ofsAddr + FuncCode);
2758 wait_finish(ofsAddr);
2761 static void wait_finish(unsigned long ofsAddr)
2766 while (readw(ofsAddr + FuncCode) != 0) {
2768 if ((j - i) > moxaFuncTout) {
2774 static void low_water_check(unsigned long ofsAddr)
2777 ushort rptr, wptr, mask;
2779 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2780 rptr = readw(ofsAddr + RXrptr);
2781 wptr = readw(ofsAddr + RXwptr);
2782 mask = readw(ofsAddr + RX_mask);
2783 len = (wptr - rptr) & mask;
2784 if (len <= Low_water)
2785 moxafunc(ofsAddr, FC_SendXon, 0);
2789 static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2791 unsigned long baseAddr;
2794 if(copy_from_user(moxaBuff, tmp, len))
2796 baseAddr = moxaBaseAddr[cardno];
2797 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2798 moxadelay(1); /* delay 10 ms */
2799 for (i = 0; i < 4096; i++)
2800 writeb(0, baseAddr + i); /* clear fix page */
2801 for (i = 0; i < len; i++)
2802 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2803 writeb(0, baseAddr + Control_reg); /* restart */
2807 static int moxafindcard(int cardno)
2809 unsigned long baseAddr;
2812 baseAddr = moxaBaseAddr[cardno];
2813 switch (moxa_boards[cardno].boardType) {
2814 case MOXA_BOARD_C218_ISA:
2815 case MOXA_BOARD_C218_PCI:
2816 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2820 case MOXA_BOARD_CP204J:
2821 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2826 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2829 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2836 static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2838 unsigned long baseAddr;
2841 if(len > sizeof(moxaBuff))
2843 if(copy_from_user(moxaBuff, tmp, len))
2845 baseAddr = moxaBaseAddr[cardno];
2846 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2847 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2848 for (i = 0; i < 7168; i++)
2849 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2850 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2851 for (i = 0; i < (len - 7168); i++)
2852 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2856 static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2858 unsigned long baseAddr, ofsAddr;
2859 int retval, port, i;
2861 if(copy_from_user(moxaBuff, tmp, len))
2863 baseAddr = moxaBaseAddr[cardno];
2864 switch (moxa_boards[cardno].boardType) {
2865 case MOXA_BOARD_C218_ISA:
2866 case MOXA_BOARD_C218_PCI:
2867 case MOXA_BOARD_CP204J:
2868 retval = moxaloadc218(cardno, baseAddr, len);
2871 port = cardno * MAX_PORTS_PER_BOARD;
2872 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2873 moxaChkPort[port] = 1;
2874 moxaCurBaud[port] = 9600L;
2875 moxaDCDState[port] = 0;
2876 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2877 ofsAddr = moxaTableAddr[port];
2878 writew(C218rx_mask, ofsAddr + RX_mask);
2879 writew(C218tx_mask, ofsAddr + TX_mask);
2880 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2881 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2883 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2884 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2889 retval = moxaloadc320(cardno, baseAddr, len,
2890 &moxa_boards[cardno].numPorts);
2893 port = cardno * MAX_PORTS_PER_BOARD;
2894 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2895 moxaChkPort[port] = 1;
2896 moxaCurBaud[port] = 9600L;
2897 moxaDCDState[port] = 0;
2898 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2899 ofsAddr = moxaTableAddr[port];
2900 if (moxa_boards[cardno].numPorts == 8) {
2901 writew(C320p8rx_mask, ofsAddr + RX_mask);
2902 writew(C320p8tx_mask, ofsAddr + TX_mask);
2903 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2904 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2905 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2906 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2908 } else if (moxa_boards[cardno].numPorts == 16) {
2909 writew(C320p16rx_mask, ofsAddr + RX_mask);
2910 writew(C320p16tx_mask, ofsAddr + TX_mask);
2911 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2912 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2913 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2914 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2916 } else if (moxa_boards[cardno].numPorts == 24) {
2917 writew(C320p24rx_mask, ofsAddr + RX_mask);
2918 writew(C320p24tx_mask, ofsAddr + TX_mask);
2919 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2920 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2921 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2922 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2923 } else if (moxa_boards[cardno].numPorts == 32) {
2924 writew(C320p32rx_mask, ofsAddr + RX_mask);
2925 writew(C320p32tx_mask, ofsAddr + TX_mask);
2926 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2927 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2928 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2929 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2930 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2938 static int moxaloadc218(int cardno, unsigned long baseAddr, int len)
2941 int i, j, len1, len2;
2942 ushort usum, *ptr, keycode;
2944 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2945 keycode = CP204J_KeyCode;
2947 keycode = C218_KeyCode;
2950 ptr = (ushort *) moxaBuff;
2951 for (i = 0; i < len1; i++)
2958 len2 = (len1 > 2048) ? 2048 : len1;
2960 for (i = 0; i < len2 << 1; i++)
2961 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2964 writew(len2, baseAddr + C218DLoad_len);
2965 writew(0, baseAddr + C218_key);
2966 for (i = 0; i < 100; i++) {
2967 if (readw(baseAddr + C218_key) == keycode)
2969 moxadelay(1); /* delay 10 ms */
2971 if (readw(baseAddr + C218_key) != keycode) {
2975 writew(0, baseAddr + C218DLoad_len);
2976 writew(usum, baseAddr + C218check_sum);
2977 writew(0, baseAddr + C218_key);
2978 for (i = 0; i < 100; i++) {
2979 if (readw(baseAddr + C218_key) == keycode)
2981 moxadelay(1); /* delay 10 ms */
2984 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2985 if (readb(baseAddr + C218chksum_ok) != 1) {
2988 writew(0, baseAddr + C218_key);
2989 for (i = 0; i < 100; i++) {
2990 if (readw(baseAddr + Magic_no) == Magic_code)
2992 moxadelay(1); /* delay 10 ms */
2994 if (readw(baseAddr + Magic_no) != Magic_code) {
2997 writew(1, baseAddr + Disable_IRQ);
2998 writew(0, baseAddr + Magic_no);
2999 for (i = 0; i < 100; i++) {
3000 if (readw(baseAddr + Magic_no) == Magic_code)
3002 moxadelay(1); /* delay 10 ms */
3004 if (readw(baseAddr + Magic_no) != Magic_code) {
3008 moxaIntNdx[cardno] = baseAddr + IRQindex;
3009 moxaIntPend[cardno] = baseAddr + IRQpending;
3010 moxaIntTable[cardno] = baseAddr + IRQtable;
3014 static int moxaloadc320(int cardno, unsigned long baseAddr, int len, int *numPorts)
3017 int i, j, wlen, len2, retry;
3022 uptr = (ushort *) moxaBuff;
3023 for (i = 0; i < wlen; i++)
3035 for (i = 0; i < len2; i++)
3036 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
3039 writew(len2, baseAddr + C320DLoad_len);
3040 writew(0, baseAddr + C320_key);
3041 for (i = 0; i < 10; i++) {
3042 if (readw(baseAddr + C320_key) == C320_KeyCode)
3046 if (readw(baseAddr + C320_key) != C320_KeyCode)
3049 writew(0, baseAddr + C320DLoad_len);
3050 writew(usum, baseAddr + C320check_sum);
3051 writew(0, baseAddr + C320_key);
3052 for (i = 0; i < 10; i++) {
3053 if (readw(baseAddr + C320_key) == C320_KeyCode)
3058 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
3059 if (readb(baseAddr + C320chksum_ok) != 1)
3061 writew(0, baseAddr + C320_key);
3062 for (i = 0; i < 600; i++) {
3063 if (readw(baseAddr + Magic_no) == Magic_code)
3067 if (readw(baseAddr + Magic_no) != Magic_code)
3070 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
3071 writew(0x3800, baseAddr + TMS320_PORT1);
3072 writew(0x3900, baseAddr + TMS320_PORT2);
3073 writew(28499, baseAddr + TMS320_CLOCK);
3075 writew(0x3200, baseAddr + TMS320_PORT1);
3076 writew(0x3400, baseAddr + TMS320_PORT2);
3077 writew(19999, baseAddr + TMS320_CLOCK);
3079 writew(1, baseAddr + Disable_IRQ);
3080 writew(0, baseAddr + Magic_no);
3081 for (i = 0; i < 500; i++) {
3082 if (readw(baseAddr + Magic_no) == Magic_code)
3086 if (readw(baseAddr + Magic_no) != Magic_code)
3089 j = readw(baseAddr + Module_cnt);
3093 writew(j, baseAddr + Module_no);
3094 writew(0, baseAddr + Magic_no);
3095 for (i = 0; i < 600; i++) {
3096 if (readw(baseAddr + Magic_no) == Magic_code)
3100 if (readw(baseAddr + Magic_no) != Magic_code)
3103 moxaIntNdx[cardno] = baseAddr + IRQindex;
3104 moxaIntPend[cardno] = baseAddr + IRQpending;
3105 moxaIntTable[cardno] = baseAddr + IRQtable;
3109 long MoxaPortGetCurBaud(int port)
3112 if (moxaChkPort[port] == 0)
3114 return (moxaCurBaud[port]);
3117 static void MoxaSetFifo(int port, int enable)
3119 unsigned long ofsAddr = moxaTableAddr[port];
3122 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
3123 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
3125 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
3126 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
3131 int MoxaPortSetMode(int port, int databits, int stopbits, int parity)
3133 unsigned long ofsAddr;
3156 break; /* stop bits 1.5 */
3185 ofsAddr = moxaTableAddr[port];
3186 moxafunc(ofsAddr, FC_SetMode, val);
3190 int MoxaPortTxBufSize(int port)
3192 unsigned long ofsAddr;
3195 ofsAddr = moxaTableAddr[port];
3196 size = readw(ofsAddr + TX_mask);
3200 int MoxaPortRxBufSize(int port)
3202 unsigned long ofsAddr;
3205 ofsAddr = moxaTableAddr[port];
3206 size = readw(ofsAddr + RX_mask);
3210 int MoxaPortRxFree(int port)
3212 unsigned long ofsAddr;
3213 ushort rptr, wptr, mask;
3216 ofsAddr = moxaTableAddr[port];
3217 rptr = readw(ofsAddr + RXrptr);
3218 wptr = readw(ofsAddr + RXwptr);
3219 mask = readw(ofsAddr + RX_mask);
3220 len = mask - ((wptr - rptr) & mask);
3223 int MoxaPortGetBrkCnt(int port)
3225 return (moxaBreakCnt[port]);
3228 void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue)
3230 unsigned long ofsAddr;
3232 ofsAddr = moxaTableAddr[port];
3233 writew(xonValue, ofsAddr + FuncArg);
3234 writew(xoffValue, ofsAddr + FuncArg1);
3235 writew(FC_SetXonXoff, ofsAddr + FuncCode);
3236 wait_finish(ofsAddr);
3239 int MoxaPortIsTxHold(int port)
3241 unsigned long ofsAddr;
3244 ofsAddr = moxaTableAddr[port];
3245 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
3246 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
3247 moxafunc(ofsAddr, FC_GetCCSR, 0);
3248 val = readw(ofsAddr + FuncArg);
3252 if (readw(ofsAddr + FlagStat) & Tx_flowOff)