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/module.h>
33 #include <linux/types.h>
35 #include <linux/ioport.h>
36 #include <linux/errno.h>
37 #include <linux/signal.h>
38 #include <linux/sched.h>
39 #include <linux/timer.h>
40 #include <linux/interrupt.h>
41 #include <linux/tty.h>
42 #include <linux/tty_flip.h>
43 #include <linux/major.h>
44 #include <linux/string.h>
45 #include <linux/fcntl.h>
46 #include <linux/ptrace.h>
47 #include <linux/serial.h>
48 #include <linux/tty_driver.h>
49 #include <linux/delay.h>
50 #include <linux/pci.h>
51 #include <linux/init.h>
52 #include <linux/bitops.h>
54 #include <asm/system.h>
56 #include <asm/uaccess.h>
58 #define MOXA_VERSION "5.1k"
61 #define MOXACUMAJOR 173
63 #define put_to_user(arg1, arg2) put_user(arg1, (unsigned long *)arg2)
64 #define get_from_user(arg1, arg2) get_user(arg1, (unsigned int *)arg2)
66 #define MAX_BOARDS 4 /* Don't change this value */
67 #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
68 #define MAX_PORTS 128 /* Don't change this value */
71 * Define the Moxa PCI vendor and device IDs.
73 #define MOXA_BUS_TYPE_ISA 0
74 #define MOXA_BUS_TYPE_PCI 1
76 #ifndef PCI_VENDOR_ID_MOXA
77 #define PCI_VENDOR_ID_MOXA 0x1393
79 #ifndef PCI_DEVICE_ID_CP204J
80 #define PCI_DEVICE_ID_CP204J 0x2040
82 #ifndef PCI_DEVICE_ID_C218
83 #define PCI_DEVICE_ID_C218 0x2180
85 #ifndef PCI_DEVICE_ID_C320
86 #define PCI_DEVICE_ID_C320 0x3200
90 MOXA_BOARD_C218_PCI = 1,
97 static char *moxa_brdname[] =
99 "C218 Turbo PCI series",
100 "C218 Turbo ISA series",
101 "C320 Turbo PCI series",
102 "C320 Turbo ISA series",
107 static struct pci_device_id moxa_pcibrds[] = {
108 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C218, PCI_ANY_ID, PCI_ANY_ID,
109 0, 0, MOXA_BOARD_C218_PCI },
110 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C320, PCI_ANY_ID, PCI_ANY_ID,
111 0, 0, MOXA_BOARD_C320_PCI },
112 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_CP204J, PCI_ANY_ID, PCI_ANY_ID,
113 0, 0, MOXA_BOARD_CP204J },
116 MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
117 #endif /* CONFIG_PCI */
119 typedef struct _moxa_isa_board_conf {
122 unsigned long baseAddr;
123 } moxa_isa_board_conf;
125 static moxa_isa_board_conf moxa_isa_boards[] =
127 /* {MOXA_BOARD_C218_ISA,8,0xDC000}, */
130 typedef struct _moxa_pci_devinfo {
133 struct pci_dev *pdev;
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 void __iomem *moxaBaseAddr[MAX_BOARDS];
146 static int loadstat[MAX_BOARDS];
152 unsigned short closing_wait;
155 long event; /* long req'd for set_bit --RR */
157 unsigned long statusflags;
158 struct tty_struct *tty;
160 wait_queue_head_t open_wait;
161 wait_queue_head_t close_wait;
162 struct work_struct tqueue;
165 struct mxser_mstatus {
173 static struct mxser_mstatus GMStatus[MAX_PORTS];
176 #define TXSTOPPED 0x1
178 #define EMPTYWAIT 0x4
182 #define MOXA_EVENT_HANGUP 1
184 #define SERIAL_DO_RESTART
187 #define SERIAL_TYPE_NORMAL 1
189 #define WAKEUP_CHARS 256
191 #define PORTNO(x) ((x)->index)
193 static int verbose = 0;
194 static int ttymajor = MOXAMAJOR;
195 /* Variables for insmod */
197 static int baseaddr[] = {0, 0, 0, 0};
198 static int type[] = {0, 0, 0, 0};
199 static int numports[] = {0, 0, 0, 0};
202 MODULE_AUTHOR("William Chen");
203 MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
204 MODULE_LICENSE("GPL");
206 module_param_array(type, int, NULL, 0);
207 module_param_array(baseaddr, int, NULL, 0);
208 module_param_array(numports, int, NULL, 0);
210 module_param(ttymajor, int, 0);
211 module_param(verbose, bool, 0644);
213 static struct tty_driver *moxaDriver;
214 static struct moxa_str moxaChannels[MAX_PORTS];
215 static int moxaTimer_on;
216 static struct timer_list moxaTimer;
217 static int moxaEmptyTimer_on[MAX_PORTS];
218 static struct timer_list moxaEmptyTimer[MAX_PORTS];
223 static void do_moxa_softint(struct work_struct *);
224 static int moxa_open(struct tty_struct *, struct file *);
225 static void moxa_close(struct tty_struct *, struct file *);
226 static int moxa_write(struct tty_struct *, const unsigned char *, int);
227 static int moxa_write_room(struct tty_struct *);
228 static void moxa_flush_buffer(struct tty_struct *);
229 static int moxa_chars_in_buffer(struct tty_struct *);
230 static void moxa_flush_chars(struct tty_struct *);
231 static void moxa_put_char(struct tty_struct *, unsigned char);
232 static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
233 static void moxa_throttle(struct tty_struct *);
234 static void moxa_unthrottle(struct tty_struct *);
235 static void moxa_set_termios(struct tty_struct *, struct ktermios *);
236 static void moxa_stop(struct tty_struct *);
237 static void moxa_start(struct tty_struct *);
238 static void moxa_hangup(struct tty_struct *);
239 static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
240 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
241 unsigned int set, unsigned int clear);
242 static void moxa_poll(unsigned long);
243 static void set_tty_param(struct tty_struct *);
244 static int block_till_ready(struct tty_struct *, struct file *,
246 static void setup_empty_event(struct tty_struct *);
247 static void check_xmit_empty(unsigned long);
248 static void shut_down(struct moxa_str *);
249 static void receive_data(struct moxa_str *);
251 * moxa board interface functions:
253 static void MoxaDriverInit(void);
254 static int MoxaDriverIoctl(unsigned int, unsigned long, int);
255 static int MoxaDriverPoll(void);
256 static int MoxaPortsOfCard(int);
257 static int MoxaPortIsValid(int);
258 static void MoxaPortEnable(int);
259 static void MoxaPortDisable(int);
260 static long MoxaPortGetMaxBaud(int);
261 static long MoxaPortSetBaud(int, long);
262 static int MoxaPortSetTermio(int, struct ktermios *, speed_t);
263 static int MoxaPortGetLineOut(int, int *, int *);
264 static void MoxaPortLineCtrl(int, int, int);
265 static void MoxaPortFlowCtrl(int, int, int, int, int, int);
266 static int MoxaPortLineStatus(int);
267 static int MoxaPortDCDChange(int);
268 static int MoxaPortDCDON(int);
269 static void MoxaPortFlushData(int, int);
270 static int MoxaPortWriteData(int, unsigned char *, int);
271 static int MoxaPortReadData(int, struct tty_struct *tty);
272 static int MoxaPortTxQueue(int);
273 static int MoxaPortRxQueue(int);
274 static int MoxaPortTxFree(int);
275 static void MoxaPortTxDisable(int);
276 static void MoxaPortTxEnable(int);
277 static int MoxaPortResetBrkCnt(int);
278 static void MoxaPortSendBreak(int, int);
279 static int moxa_get_serial_info(struct moxa_str *, struct serial_struct __user *);
280 static int moxa_set_serial_info(struct moxa_str *, struct serial_struct __user *);
281 static void MoxaSetFifo(int port, int enable);
283 static const struct tty_operations moxa_ops = {
287 .write_room = moxa_write_room,
288 .flush_buffer = moxa_flush_buffer,
289 .chars_in_buffer = moxa_chars_in_buffer,
290 .flush_chars = moxa_flush_chars,
291 .put_char = moxa_put_char,
293 .throttle = moxa_throttle,
294 .unthrottle = moxa_unthrottle,
295 .set_termios = moxa_set_termios,
298 .hangup = moxa_hangup,
299 .tiocmget = moxa_tiocmget,
300 .tiocmset = moxa_tiocmset,
303 static DEFINE_SPINLOCK(moxa_lock);
306 static int moxa_get_PCI_conf(struct pci_dev *p, int board_type, moxa_board_conf * board)
308 board->baseAddr = pci_resource_start (p, 2);
309 board->boardType = board_type;
310 switch (board_type) {
311 case MOXA_BOARD_C218_ISA:
312 case MOXA_BOARD_C218_PCI:
316 case MOXA_BOARD_CP204J:
323 board->busType = MOXA_BUS_TYPE_PCI;
324 board->pciInfo.busNum = p->bus->number;
325 board->pciInfo.devNum = p->devfn >> 3;
326 board->pciInfo.pdev = p;
327 /* don't lose the reference in the next pci_get_device iteration */
332 #endif /* CONFIG_PCI */
334 static int __init moxa_init(void)
339 printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION);
340 moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
344 moxaDriver->owner = THIS_MODULE;
345 moxaDriver->name = "ttyMX";
346 moxaDriver->major = ttymajor;
347 moxaDriver->minor_start = 0;
348 moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
349 moxaDriver->subtype = SERIAL_TYPE_NORMAL;
350 moxaDriver->init_termios = tty_std_termios;
351 moxaDriver->init_termios.c_iflag = 0;
352 moxaDriver->init_termios.c_oflag = 0;
353 moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
354 moxaDriver->init_termios.c_lflag = 0;
355 moxaDriver->init_termios.c_ispeed = 9600;
356 moxaDriver->init_termios.c_ospeed = 9600;
357 moxaDriver->flags = TTY_DRIVER_REAL_RAW;
358 tty_set_operations(moxaDriver, &moxa_ops);
360 for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) {
361 ch->type = PORT_16550A;
363 INIT_WORK(&ch->tqueue, do_moxa_softint);
365 ch->close_delay = 5 * HZ / 10;
366 ch->closing_wait = 30 * HZ;
368 ch->blocked_open = 0;
369 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
370 init_waitqueue_head(&ch->open_wait);
371 init_waitqueue_head(&ch->close_wait);
374 for (i = 0; i < MAX_BOARDS; i++) {
375 moxa_boards[i].boardType = 0;
376 moxa_boards[i].numPorts = 0;
377 moxa_boards[i].baseAddr = 0;
378 moxa_boards[i].busType = 0;
379 moxa_boards[i].pciInfo.busNum = 0;
380 moxa_boards[i].pciInfo.devNum = 0;
383 printk("Tty devices major number = %d\n", ttymajor);
385 if (tty_register_driver(moxaDriver)) {
386 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
387 put_tty_driver(moxaDriver);
390 for (i = 0; i < MAX_PORTS; i++) {
391 init_timer(&moxaEmptyTimer[i]);
392 moxaEmptyTimer[i].function = check_xmit_empty;
393 moxaEmptyTimer[i].data = (unsigned long) & moxaChannels[i];
394 moxaEmptyTimer_on[i] = 0;
397 init_timer(&moxaTimer);
398 moxaTimer.function = moxa_poll;
399 moxaTimer.expires = jiffies + (HZ / 50);
401 add_timer(&moxaTimer);
403 /* Find the boards defined in source code */
405 for (i = 0; i < MAX_BOARDS; i++) {
406 if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) ||
407 (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) {
408 moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType;
409 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
410 moxa_boards[numBoards].numPorts = 8;
412 moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts;
413 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
414 moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr;
416 printk("Board %2d: %s board(baseAddr=%lx)\n",
418 moxa_brdname[moxa_boards[numBoards].boardType - 1],
419 moxa_boards[numBoards].baseAddr);
423 /* Find the boards defined form module args. */
425 for (i = 0; i < MAX_BOARDS; i++) {
426 if ((type[i] == MOXA_BOARD_C218_ISA) ||
427 (type[i] == MOXA_BOARD_C320_ISA)) {
429 printk("Board %2d: %s board(baseAddr=%lx)\n",
431 moxa_brdname[type[i] - 1],
432 (unsigned long) baseaddr[i]);
433 if (numBoards >= MAX_BOARDS) {
435 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
438 moxa_boards[numBoards].boardType = type[i];
439 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
440 moxa_boards[numBoards].numPorts = 8;
442 moxa_boards[numBoards].numPorts = numports[i];
443 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
444 moxa_boards[numBoards].baseAddr = baseaddr[i];
449 /* Find PCI boards here */
452 struct pci_dev *p = NULL;
453 int n = ARRAY_SIZE(moxa_pcibrds) - 1;
456 while ((p = pci_get_device(moxa_pcibrds[i].vendor, moxa_pcibrds[i].device, p))!=NULL)
458 if (pci_enable_device(p))
460 if (numBoards >= MAX_BOARDS) {
462 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
464 moxa_get_PCI_conf(p, moxa_pcibrds[i].driver_data,
465 &moxa_boards[numBoards]);
473 for (i = 0; i < numBoards; i++) {
474 moxaBaseAddr[i] = ioremap((unsigned long) moxa_boards[i].baseAddr, 0x4000);
480 static void __exit moxa_exit(void)
485 printk("Unloading module moxa ...\n");
488 del_timer(&moxaTimer);
490 for (i = 0; i < MAX_PORTS; i++)
491 if (moxaEmptyTimer_on[i])
492 del_timer(&moxaEmptyTimer[i]);
494 if (tty_unregister_driver(moxaDriver))
495 printk("Couldn't unregister MOXA Intellio family serial driver\n");
496 put_tty_driver(moxaDriver);
498 for (i = 0; i < MAX_BOARDS; i++) {
500 iounmap(moxaBaseAddr[i]);
501 if (moxa_boards[i].busType == MOXA_BUS_TYPE_PCI)
502 pci_dev_put(moxa_boards[i].pciInfo.pdev);
509 module_init(moxa_init);
510 module_exit(moxa_exit);
512 static void do_moxa_softint(struct work_struct *work)
514 struct moxa_str *ch = container_of(work, struct moxa_str, tqueue);
515 struct tty_struct *tty;
517 if (ch && (tty = ch->tty)) {
518 if (test_and_clear_bit(MOXA_EVENT_HANGUP, &ch->event)) {
519 tty_hangup(tty); /* FIXME: module removal race here - AKPM */
520 wake_up_interruptible(&ch->open_wait);
521 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
526 static int moxa_open(struct tty_struct *tty, struct file *filp)
533 if (port == MAX_PORTS) {
536 if (!MoxaPortIsValid(port)) {
537 tty->driver_data = NULL;
541 ch = &moxaChannels[port];
543 tty->driver_data = ch;
545 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
548 MoxaPortLineCtrl(ch->port, 1, 1);
549 MoxaPortEnable(ch->port);
550 ch->asyncflags |= ASYNC_INITIALIZED;
552 retval = block_till_ready(tty, filp, ch);
554 moxa_unthrottle(tty);
556 if (ch->type == PORT_16550A) {
557 MoxaSetFifo(ch->port, 1);
559 MoxaSetFifo(ch->port, 0);
565 static void moxa_close(struct tty_struct *tty, struct file *filp)
571 if (port == MAX_PORTS) {
574 if (!MoxaPortIsValid(port)) {
575 #ifdef SERIAL_DEBUG_CLOSE
576 printk("Invalid portno in moxa_close\n");
578 tty->driver_data = NULL;
581 if (tty->driver_data == NULL) {
584 if (tty_hung_up_p(filp)) {
587 ch = (struct moxa_str *) tty->driver_data;
589 if ((tty->count == 1) && (ch->count != 1)) {
590 printk("moxa_close: bad serial port count; tty->count is 1, "
591 "ch->count is %d\n", ch->count);
594 if (--ch->count < 0) {
595 printk("moxa_close: bad serial port count, device=%s\n",
602 ch->asyncflags |= ASYNC_CLOSING;
604 ch->cflag = tty->termios->c_cflag;
605 if (ch->asyncflags & ASYNC_INITIALIZED) {
606 setup_empty_event(tty);
607 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
608 moxaEmptyTimer_on[ch->port] = 0;
609 del_timer(&moxaEmptyTimer[ch->port]);
612 MoxaPortFlushData(port, 2);
614 if (tty->driver->flush_buffer)
615 tty->driver->flush_buffer(tty);
616 tty_ldisc_flush(tty);
621 if (ch->blocked_open) {
622 if (ch->close_delay) {
623 msleep_interruptible(jiffies_to_msecs(ch->close_delay));
625 wake_up_interruptible(&ch->open_wait);
627 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
628 wake_up_interruptible(&ch->close_wait);
631 static int moxa_write(struct tty_struct *tty,
632 const unsigned char *buf, int count)
638 ch = (struct moxa_str *) tty->driver_data;
643 spin_lock_irqsave(&moxa_lock, flags);
644 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
645 spin_unlock_irqrestore(&moxa_lock, flags);
647 /*********************************************
648 if ( !(ch->statusflags & LOWWAIT) &&
649 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
650 ************************************************/
651 ch->statusflags |= LOWWAIT;
655 static int moxa_write_room(struct tty_struct *tty)
661 ch = (struct moxa_str *) tty->driver_data;
664 return (MoxaPortTxFree(ch->port));
667 static void moxa_flush_buffer(struct tty_struct *tty)
669 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
673 MoxaPortFlushData(ch->port, 1);
677 static int moxa_chars_in_buffer(struct tty_struct *tty)
680 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
683 * Sigh...I have to check if driver_data is NULL here, because
684 * if an open() fails, the TTY subsystem eventually calls
685 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
686 * routine. And since the open() failed, we return 0 here. TDJ
690 chars = MoxaPortTxQueue(ch->port);
693 * Make it possible to wakeup anything waiting for output
694 * in tty_ioctl.c, etc.
696 if (!(ch->statusflags & EMPTYWAIT))
697 setup_empty_event(tty);
702 static void moxa_flush_chars(struct tty_struct *tty)
705 * Don't think I need this, because this is called to empty the TX
706 * buffer for the 16450, 16550, etc.
710 static void moxa_put_char(struct tty_struct *tty, unsigned char c)
716 ch = (struct moxa_str *) tty->driver_data;
720 spin_lock_irqsave(&moxa_lock, flags);
721 MoxaPortWriteData(port, &c, 1);
722 spin_unlock_irqrestore(&moxa_lock, flags);
723 /************************************************
724 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
725 *************************************************/
726 ch->statusflags |= LOWWAIT;
729 static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
731 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
733 int flag = 0, dtr, rts;
736 if ((port != MAX_PORTS) && (!ch))
739 MoxaPortGetLineOut(ch->port, &dtr, &rts);
744 dtr = MoxaPortLineStatus(ch->port);
754 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
755 unsigned int set, unsigned int clear)
757 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
762 if ((port != MAX_PORTS) && (!ch))
765 MoxaPortGetLineOut(ch->port, &dtr, &rts);
770 if (clear & TIOCM_RTS)
772 if (clear & TIOCM_DTR)
774 MoxaPortLineCtrl(ch->port, dtr, rts);
778 static int moxa_ioctl(struct tty_struct *tty, struct file *file,
779 unsigned int cmd, unsigned long arg)
781 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
783 void __user *argp = (void __user *)arg;
787 if ((port != MAX_PORTS) && (!ch))
791 case TCSBRK: /* SVID version: non-zero arg --> no break */
792 retval = tty_check_change(tty);
795 setup_empty_event(tty);
796 tty_wait_until_sent(tty, 0);
798 MoxaPortSendBreak(ch->port, 0);
800 case TCSBRKP: /* support for POSIX tcsendbreak() */
801 retval = tty_check_change(tty);
804 setup_empty_event(tty);
805 tty_wait_until_sent(tty, 0);
806 MoxaPortSendBreak(ch->port, arg);
809 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
811 if(get_user(retval, (unsigned long __user *) argp))
814 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
817 ch->asyncflags &= ~ASYNC_CHECK_CD;
819 ch->asyncflags |= ASYNC_CHECK_CD;
822 return moxa_get_serial_info(ch, argp);
825 return moxa_set_serial_info(ch, argp);
827 retval = MoxaDriverIoctl(cmd, arg, port);
832 static void moxa_throttle(struct tty_struct *tty)
834 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
836 ch->statusflags |= THROTTLE;
839 static void moxa_unthrottle(struct tty_struct *tty)
841 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
843 ch->statusflags &= ~THROTTLE;
846 static void moxa_set_termios(struct tty_struct *tty,
847 struct ktermios *old_termios)
849 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
854 if (!(old_termios->c_cflag & CLOCAL) &&
855 (tty->termios->c_cflag & CLOCAL))
856 wake_up_interruptible(&ch->open_wait);
859 static void moxa_stop(struct tty_struct *tty)
861 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
865 MoxaPortTxDisable(ch->port);
866 ch->statusflags |= TXSTOPPED;
870 static void moxa_start(struct tty_struct *tty)
872 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
877 if (!(ch->statusflags & TXSTOPPED))
880 MoxaPortTxEnable(ch->port);
881 ch->statusflags &= ~TXSTOPPED;
884 static void moxa_hangup(struct tty_struct *tty)
886 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
888 moxa_flush_buffer(tty);
892 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
894 wake_up_interruptible(&ch->open_wait);
897 static void moxa_poll(unsigned long ignored)
901 struct tty_struct *tp;
905 del_timer(&moxaTimer);
907 if (MoxaDriverPoll() < 0) {
908 moxaTimer.function = moxa_poll;
909 moxaTimer.expires = jiffies + (HZ / 50);
911 add_timer(&moxaTimer);
914 for (card = 0; card < MAX_BOARDS; card++) {
915 if ((ports = MoxaPortsOfCard(card)) <= 0)
917 ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
918 for (i = 0; i < ports; i++, ch++) {
919 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
921 if (!(ch->statusflags & THROTTLE) &&
922 (MoxaPortRxQueue(ch->port) > 0))
924 if ((tp = ch->tty) == 0)
926 if (ch->statusflags & LOWWAIT) {
927 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
929 ch->statusflags &= ~LOWWAIT;
934 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
935 tty_insert_flip_char(tp, 0, TTY_BREAK);
936 tty_schedule_flip(tp);
938 if (MoxaPortDCDChange(ch->port)) {
939 if (ch->asyncflags & ASYNC_CHECK_CD) {
940 if (MoxaPortDCDON(ch->port))
941 wake_up_interruptible(&ch->open_wait);
943 set_bit(MOXA_EVENT_HANGUP, &ch->event);
944 schedule_work(&ch->tqueue);
951 moxaTimer.function = moxa_poll;
952 moxaTimer.expires = jiffies + (HZ / 50);
954 add_timer(&moxaTimer);
957 /******************************************************************************/
959 static void set_tty_param(struct tty_struct *tty)
961 register struct ktermios *ts;
963 int rts, cts, txflow, rxflow, xany;
965 ch = (struct moxa_str *) tty->driver_data;
967 if (ts->c_cflag & CLOCAL)
968 ch->asyncflags &= ~ASYNC_CHECK_CD;
970 ch->asyncflags |= ASYNC_CHECK_CD;
971 rts = cts = txflow = rxflow = xany = 0;
972 if (ts->c_cflag & CRTSCTS)
974 if (ts->c_iflag & IXON)
976 if (ts->c_iflag & IXOFF)
978 if (ts->c_iflag & IXANY)
980 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
981 MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty));
984 static int block_till_ready(struct tty_struct *tty, struct file *filp,
987 DECLARE_WAITQUEUE(wait,current);
990 int do_clocal = C_CLOCAL(tty);
993 * If the device is in the middle of being closed, then block
994 * until it's done, and then try again.
996 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
997 if (ch->asyncflags & ASYNC_CLOSING)
998 interruptible_sleep_on(&ch->close_wait);
999 #ifdef SERIAL_DO_RESTART
1000 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1003 return (-ERESTARTSYS);
1009 * If non-blocking mode is set, then make the check up front
1012 if (filp->f_flags & O_NONBLOCK) {
1013 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1017 * Block waiting for the carrier detect and the line to become free
1020 add_wait_queue(&ch->open_wait, &wait);
1021 #ifdef SERIAL_DEBUG_OPEN
1022 printk("block_til_ready before block: ttys%d, count = %d\n",
1023 ch->line, ch->count);
1025 spin_lock_irqsave(&moxa_lock, flags);
1026 if (!tty_hung_up_p(filp))
1029 spin_unlock_irqrestore(&moxa_lock, flags);
1032 set_current_state(TASK_INTERRUPTIBLE);
1033 if (tty_hung_up_p(filp) ||
1034 !(ch->asyncflags & ASYNC_INITIALIZED)) {
1035 #ifdef SERIAL_DO_RESTART
1036 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1039 retval = -ERESTARTSYS;
1045 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
1046 MoxaPortDCDON(ch->port)))
1049 if (signal_pending(current)) {
1050 retval = -ERESTARTSYS;
1055 set_current_state(TASK_RUNNING);
1056 remove_wait_queue(&ch->open_wait, &wait);
1058 spin_lock_irqsave(&moxa_lock, flags);
1059 if (!tty_hung_up_p(filp))
1062 spin_unlock_irqrestore(&moxa_lock, flags);
1063 #ifdef SERIAL_DEBUG_OPEN
1064 printk("block_til_ready after blocking: ttys%d, count = %d\n",
1065 ch->line, ch->count);
1069 /* FIXME: review to see if we need to use set_bit on these */
1070 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1074 static void setup_empty_event(struct tty_struct *tty)
1076 struct moxa_str *ch = tty->driver_data;
1077 unsigned long flags;
1079 spin_lock_irqsave(&moxa_lock, flags);
1080 ch->statusflags |= EMPTYWAIT;
1081 moxaEmptyTimer_on[ch->port] = 0;
1082 del_timer(&moxaEmptyTimer[ch->port]);
1083 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1084 moxaEmptyTimer_on[ch->port] = 1;
1085 add_timer(&moxaEmptyTimer[ch->port]);
1086 spin_unlock_irqrestore(&moxa_lock, flags);
1089 static void check_xmit_empty(unsigned long data)
1091 struct moxa_str *ch;
1093 ch = (struct moxa_str *) data;
1094 moxaEmptyTimer_on[ch->port] = 0;
1095 del_timer(&moxaEmptyTimer[ch->port]);
1096 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1097 if (MoxaPortTxQueue(ch->port) == 0) {
1098 ch->statusflags &= ~EMPTYWAIT;
1099 tty_wakeup(ch->tty);
1102 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1103 moxaEmptyTimer_on[ch->port] = 1;
1104 add_timer(&moxaEmptyTimer[ch->port]);
1106 ch->statusflags &= ~EMPTYWAIT;
1109 static void shut_down(struct moxa_str *ch)
1111 struct tty_struct *tp;
1113 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1118 MoxaPortDisable(ch->port);
1121 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1123 if (tp->termios->c_cflag & HUPCL)
1124 MoxaPortLineCtrl(ch->port, 0, 0);
1126 ch->asyncflags &= ~ASYNC_INITIALIZED;
1129 static void receive_data(struct moxa_str *ch)
1131 struct tty_struct *tp;
1132 struct ktermios *ts;
1133 unsigned long flags;
1139 /**************************************************
1140 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1141 *****************************************************/
1143 MoxaPortFlushData(ch->port, 0);
1146 spin_lock_irqsave(&moxa_lock, flags);
1147 MoxaPortReadData(ch->port, tp);
1148 spin_unlock_irqrestore(&moxa_lock, flags);
1149 tty_schedule_flip(tp);
1152 #define Magic_code 0x404
1155 * System Configuration
1158 * for C218 BIOS initialization
1160 #define C218_ConfBase 0x800
1161 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1162 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1163 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1164 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1165 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1166 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1167 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1168 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1169 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1170 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1172 #define C218_LoadBuf 0x0F00
1173 #define C218_KeyCode 0x218
1174 #define CP204J_KeyCode 0x204
1177 * for C320 BIOS initialization
1179 #define C320_ConfBase 0x800
1180 #define C320_LoadBuf 0x0f00
1181 #define STS_init 0x05 /* for C320_status */
1183 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1184 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1185 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1186 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1187 #define C320check_sum C320_ConfBase + 8 /* WORD */
1188 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1189 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1190 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1192 #define C320_KeyCode 0x320
1194 #define FixPage_addr 0x0000 /* starting addr of static page */
1195 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1196 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1197 #define Control_reg 0x1ff0 /* select page and reset control */
1198 #define HW_reset 0x80
1203 #define FC_CardReset 0x80
1204 #define FC_ChannelReset 1 /* C320 firmware not supported */
1205 #define FC_EnableCH 2
1206 #define FC_DisableCH 3
1207 #define FC_SetParam 4
1208 #define FC_SetMode 5
1209 #define FC_SetRate 6
1210 #define FC_LineControl 7
1211 #define FC_LineStatus 8
1212 #define FC_XmitControl 9
1213 #define FC_FlushQueue 10
1214 #define FC_SendBreak 11
1215 #define FC_StopBreak 12
1216 #define FC_LoopbackON 13
1217 #define FC_LoopbackOFF 14
1218 #define FC_ClrIrqTable 15
1219 #define FC_SendXon 16
1220 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1221 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1222 #define FC_SetBreakIrq 19
1223 #define FC_SetLineIrq 20
1224 #define FC_SetFlowCtl 21
1225 #define FC_GenIrq 22
1226 #define FC_InCD180 23
1227 #define FC_OutCD180 24
1228 #define FC_InUARTreg 23
1229 #define FC_OutUARTreg 24
1230 #define FC_SetXonXoff 25
1231 #define FC_OutCD180CCR 26
1232 #define FC_ExtIQueue 27
1233 #define FC_ExtOQueue 28
1234 #define FC_ClrLineIrq 29
1235 #define FC_HWFlowCtl 30
1236 #define FC_GetClockRate 35
1237 #define FC_SetBaud 36
1238 #define FC_SetDataMode 41
1239 #define FC_GetCCSR 43
1240 #define FC_GetDataError 45
1241 #define FC_RxControl 50
1242 #define FC_ImmSend 51
1243 #define FC_SetXonState 52
1244 #define FC_SetXoffState 53
1245 #define FC_SetRxFIFOTrig 54
1246 #define FC_SetTxFIFOCnt 55
1247 #define FC_UnixRate 56
1248 #define FC_UnixResetTimer 57
1250 #define RxFIFOTrig1 0
1251 #define RxFIFOTrig4 1
1252 #define RxFIFOTrig8 2
1253 #define RxFIFOTrig14 3
1258 #define DRAM_global 0
1259 #define INT_data (DRAM_global + 0)
1260 #define Config_base (DRAM_global + 0x108)
1262 #define IRQindex (INT_data + 0)
1263 #define IRQpending (INT_data + 4)
1264 #define IRQtable (INT_data + 8)
1269 #define IntrRx 0x01 /* receiver data O.K. */
1270 #define IntrTx 0x02 /* transmit buffer empty */
1271 #define IntrFunc 0x04 /* function complete */
1272 #define IntrBreak 0x08 /* received break */
1273 #define IntrLine 0x10 /* line status change
1275 #define IntrIntr 0x20 /* received INTR code */
1276 #define IntrQuit 0x40 /* received QUIT code */
1277 #define IntrEOF 0x80 /* received EOF code */
1279 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1280 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1282 #define Magic_no (Config_base + 0)
1283 #define Card_model_no (Config_base + 2)
1284 #define Total_ports (Config_base + 4)
1285 #define Module_cnt (Config_base + 8)
1286 #define Module_no (Config_base + 10)
1287 #define Timer_10ms (Config_base + 14)
1288 #define Disable_IRQ (Config_base + 20)
1289 #define TMS320_PORT1 (Config_base + 22)
1290 #define TMS320_PORT2 (Config_base + 24)
1291 #define TMS320_CLOCK (Config_base + 26)
1294 * DATA BUFFER in DRAM
1296 #define Extern_table 0x400 /* Base address of the external table
1297 (24 words * 64) total 3K bytes
1298 (24 words * 128) total 6K bytes */
1299 #define Extern_size 0x60 /* 96 bytes */
1300 #define RXrptr 0x00 /* read pointer for RX buffer */
1301 #define RXwptr 0x02 /* write pointer for RX buffer */
1302 #define TXrptr 0x04 /* read pointer for TX buffer */
1303 #define TXwptr 0x06 /* write pointer for TX buffer */
1304 #define HostStat 0x08 /* IRQ flag and general flag */
1305 #define FlagStat 0x0A
1306 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1307 /* x x x x | | | | */
1308 /* | | | + CTS flow */
1309 /* | | +--- RTS flow */
1310 /* | +------ TX Xon/Xoff */
1311 /* +--------- RX Xon/Xoff */
1312 #define Break_cnt 0x0E /* received break count */
1313 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1314 #define RX_mask 0x12
1315 #define TX_mask 0x14
1316 #define Ofs_rxb 0x16
1317 #define Ofs_txb 0x18
1318 #define Page_rxb 0x1A
1319 #define Page_txb 0x1C
1320 #define EndPage_rxb 0x1E
1321 #define EndPage_txb 0x20
1322 #define Data_error 0x22
1323 #define RxTrigger 0x28
1324 #define TxTrigger 0x2a
1326 #define rRXwptr 0x34
1327 #define Low_water 0x36
1329 #define FuncCode 0x40
1330 #define FuncArg 0x42
1331 #define FuncArg1 0x44
1333 #define C218rx_size 0x2000 /* 8K bytes */
1334 #define C218tx_size 0x8000 /* 32K bytes */
1336 #define C218rx_mask (C218rx_size - 1)
1337 #define C218tx_mask (C218tx_size - 1)
1339 #define C320p8rx_size 0x2000
1340 #define C320p8tx_size 0x8000
1341 #define C320p8rx_mask (C320p8rx_size - 1)
1342 #define C320p8tx_mask (C320p8tx_size - 1)
1344 #define C320p16rx_size 0x2000
1345 #define C320p16tx_size 0x4000
1346 #define C320p16rx_mask (C320p16rx_size - 1)
1347 #define C320p16tx_mask (C320p16tx_size - 1)
1349 #define C320p24rx_size 0x2000
1350 #define C320p24tx_size 0x2000
1351 #define C320p24rx_mask (C320p24rx_size - 1)
1352 #define C320p24tx_mask (C320p24tx_size - 1)
1354 #define C320p32rx_size 0x1000
1355 #define C320p32tx_size 0x1000
1356 #define C320p32rx_mask (C320p32rx_size - 1)
1357 #define C320p32tx_mask (C320p32tx_size - 1)
1359 #define Page_size 0x2000
1360 #define Page_mask (Page_size - 1)
1361 #define C218rx_spage 3
1362 #define C218tx_spage 4
1363 #define C218rx_pageno 1
1364 #define C218tx_pageno 4
1365 #define C218buf_pageno 5
1367 #define C320p8rx_spage 3
1368 #define C320p8tx_spage 4
1369 #define C320p8rx_pgno 1
1370 #define C320p8tx_pgno 4
1371 #define C320p8buf_pgno 5
1373 #define C320p16rx_spage 3
1374 #define C320p16tx_spage 4
1375 #define C320p16rx_pgno 1
1376 #define C320p16tx_pgno 2
1377 #define C320p16buf_pgno 3
1379 #define C320p24rx_spage 3
1380 #define C320p24tx_spage 4
1381 #define C320p24rx_pgno 1
1382 #define C320p24tx_pgno 1
1383 #define C320p24buf_pgno 2
1385 #define C320p32rx_spage 3
1386 #define C320p32tx_ofs C320p32rx_size
1387 #define C320p32tx_spage 3
1388 #define C320p32buf_pgno 1
1393 #define WakeupRx 0x01
1394 #define WakeupTx 0x02
1395 #define WakeupBreak 0x08
1396 #define WakeupLine 0x10
1397 #define WakeupIntr 0x20
1398 #define WakeupQuit 0x40
1399 #define WakeupEOF 0x80 /* used in VTIME control */
1400 #define WakeupRxTrigger 0x100
1401 #define WakeupTxTrigger 0x200
1405 #define Rx_over 0x01
1406 #define Xoff_state 0x02
1407 #define Tx_flowOff 0x04
1408 #define Tx_enable 0x08
1409 #define CTS_state 0x10
1410 #define DSR_state 0x20
1411 #define DCD_state 0x80
1415 #define CTS_FlowCtl 1
1416 #define RTS_FlowCtl 2
1417 #define Tx_FlowCtl 4
1418 #define Rx_FlowCtl 8
1419 #define IXM_IXANY 0x10
1421 #define LowWater 128
1429 /* mode definition */
1435 #define MX_STOP1 0x00
1436 #define MX_STOP15 0x04
1437 #define MX_STOP2 0x08
1439 #define MX_PARNONE 0x00
1440 #define MX_PAREVEN 0x40
1441 #define MX_PARODD 0xC0
1446 #define QueryPort MAX_PORTS
1452 int rxcnt[MAX_PORTS];
1453 int txcnt[MAX_PORTS];
1455 typedef struct mon_str mon_st;
1457 #define DCD_changed 0x01
1458 #define DCD_oldstate 0x80
1460 static unsigned char moxaBuff[10240];
1461 static void __iomem *moxaIntNdx[MAX_BOARDS];
1462 static void __iomem *moxaIntPend[MAX_BOARDS];
1463 static void __iomem *moxaIntTable[MAX_BOARDS];
1464 static char moxaChkPort[MAX_PORTS];
1465 static char moxaLineCtrl[MAX_PORTS];
1466 static void __iomem *moxaTableAddr[MAX_PORTS];
1467 static long moxaCurBaud[MAX_PORTS];
1468 static char moxaDCDState[MAX_PORTS];
1469 static char moxaLowChkFlag[MAX_PORTS];
1470 static int moxaLowWaterChk;
1471 static int moxaCard;
1472 static mon_st moxaLog;
1473 static int moxaFuncTout;
1474 static ushort moxaBreakCnt[MAX_PORTS];
1476 static void moxadelay(int);
1477 static void moxafunc(void __iomem *, int, ushort);
1478 static void wait_finish(void __iomem *);
1479 static void low_water_check(void __iomem *);
1480 static int moxaloadbios(int, unsigned char __user *, int);
1481 static int moxafindcard(int);
1482 static int moxaload320b(int, unsigned char __user *, int);
1483 static int moxaloadcode(int, unsigned char __user *, int);
1484 static int moxaloadc218(int, void __iomem *, int);
1485 static int moxaloadc320(int, void __iomem *, int, int *);
1487 /*****************************************************************************
1488 * Driver level functions: *
1489 * 1. MoxaDriverInit(void); *
1490 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1491 * 3. MoxaDriverPoll(void); *
1492 *****************************************************************************/
1493 void MoxaDriverInit(void)
1497 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1500 moxaLowWaterChk = 0;
1501 for (i = 0; i < MAX_PORTS; i++) {
1503 moxaLowChkFlag[i] = 0;
1504 moxaLineCtrl[i] = 0;
1505 moxaLog.rxcnt[i] = 0;
1506 moxaLog.txcnt[i] = 0;
1511 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1512 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1513 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1514 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1515 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1516 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1517 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1518 #define MOXA_GETDATACOUNT (MOXA + 23)
1519 #define MOXA_GET_IOQUEUE (MOXA + 27)
1520 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1521 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1522 #define MOXA_GET_MAJOR (MOXA + 63)
1523 #define MOXA_GET_CUMAJOR (MOXA + 64)
1524 #define MOXA_GETMSTATUS (MOXA + 65)
1538 static struct moxaq_str temp_queue[MAX_PORTS];
1539 static struct dl_str dltmp;
1541 void MoxaPortFlushData(int port, int mode)
1543 void __iomem *ofsAddr;
1544 if ((mode < 0) || (mode > 2))
1546 ofsAddr = moxaTableAddr[port];
1547 moxafunc(ofsAddr, FC_FlushQueue, mode);
1549 moxaLowChkFlag[port] = 0;
1550 low_water_check(ofsAddr);
1554 int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1558 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1559 void __user *argp = (void __user *)arg;
1561 if (port == QueryPort) {
1562 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1563 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1564 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1565 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1566 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1571 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS * sizeof(moxa_board_conf)))
1574 case MOXA_INIT_DRIVER:
1575 if ((int) arg == 0x404)
1578 case MOXA_GETDATACOUNT:
1579 moxaLog.tick = jiffies;
1580 if(copy_to_user(argp, &moxaLog, sizeof(mon_st)))
1583 case MOXA_FLUSH_QUEUE:
1584 MoxaPortFlushData(port, arg);
1586 case MOXA_GET_IOQUEUE:
1587 for (i = 0; i < MAX_PORTS; i++) {
1588 if (moxaChkPort[i]) {
1589 temp_queue[i].inq = MoxaPortRxQueue(i);
1590 temp_queue[i].outq = MoxaPortTxQueue(i);
1593 if(copy_to_user(argp, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
1596 case MOXA_GET_OQUEUE:
1597 i = MoxaPortTxQueue(port);
1598 return put_user(i, (unsigned long __user *)argp);
1599 case MOXA_GET_IQUEUE:
1600 i = MoxaPortRxQueue(port);
1601 return put_user(i, (unsigned long __user *)argp);
1602 case MOXA_GET_MAJOR:
1603 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1606 case MOXA_GET_CUMAJOR:
1608 if(copy_to_user(argp, &i, sizeof(int)))
1611 case MOXA_GETMSTATUS:
1612 for (i = 0; i < MAX_PORTS; i++) {
1614 GMStatus[i].dcd = 0;
1615 GMStatus[i].dsr = 0;
1616 GMStatus[i].cts = 0;
1617 if (!moxaChkPort[i]) {
1620 status = MoxaPortLineStatus(moxaChannels[i].port);
1622 GMStatus[i].cts = 1;
1624 GMStatus[i].dsr = 1;
1626 GMStatus[i].dcd = 1;
1629 if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
1630 GMStatus[i].cflag = moxaChannels[i].cflag;
1632 GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
1634 if(copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
1638 return (-ENOIOCTLCMD);
1639 case MOXA_LOAD_BIOS:
1640 case MOXA_FIND_BOARD:
1641 case MOXA_LOAD_C320B:
1642 case MOXA_LOAD_CODE:
1643 if (!capable(CAP_SYS_RAWIO))
1648 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1650 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
1655 case MOXA_LOAD_BIOS:
1656 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1658 case MOXA_FIND_BOARD:
1659 return moxafindcard(dltmp.cardno);
1660 case MOXA_LOAD_C320B:
1661 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1662 default: /* to keep gcc happy */
1664 case MOXA_LOAD_CODE:
1665 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1673 int MoxaDriverPoll(void)
1675 register ushort temp;
1677 void __iomem *ofsAddr;
1683 for (card = 0; card < MAX_BOARDS; card++) {
1684 if (loadstat[card] == 0)
1686 if ((ports = moxa_boards[card].numPorts) == 0)
1688 if (readb(moxaIntPend[card]) == 0xff) {
1689 ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
1690 p = card * MAX_PORTS_PER_BOARD;
1692 for (port = 0; port < ports; port += 2, p++) {
1693 if ((temp = readw(ip + port)) != 0) {
1694 writew(0, ip + port);
1695 ofsAddr = moxaTableAddr[p];
1697 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1698 if (temp & IntrBreak) {
1701 if (temp & IntrLine) {
1702 if (readb(ofsAddr + FlagStat) & DCD_state) {
1703 if ((moxaDCDState[p] & DCD_oldstate) == 0)
1704 moxaDCDState[p] = (DCD_oldstate |
1707 if (moxaDCDState[p] & DCD_oldstate)
1708 moxaDCDState[p] = DCD_changed;
1713 writeb(0, moxaIntPend[card]);
1715 if (moxaLowWaterChk) {
1716 p = card * MAX_PORTS_PER_BOARD;
1717 for (port = 0; port < ports; port++, p++) {
1718 if (moxaLowChkFlag[p]) {
1719 moxaLowChkFlag[p] = 0;
1720 ofsAddr = moxaTableAddr[p];
1721 low_water_check(ofsAddr);
1726 moxaLowWaterChk = 0;
1730 /*****************************************************************************
1731 * Card level function: *
1732 * 1. MoxaPortsOfCard(int cardno); *
1733 *****************************************************************************/
1734 int MoxaPortsOfCard(int cardno)
1737 if (moxa_boards[cardno].boardType == 0)
1739 return (moxa_boards[cardno].numPorts);
1742 /*****************************************************************************
1743 * Port level functions: *
1744 * 1. MoxaPortIsValid(int port); *
1745 * 2. MoxaPortEnable(int port); *
1746 * 3. MoxaPortDisable(int port); *
1747 * 4. MoxaPortGetMaxBaud(int port); *
1748 * 5. MoxaPortGetCurBaud(int port); *
1749 * 6. MoxaPortSetBaud(int port, long baud); *
1750 * 7. MoxaPortSetMode(int port, int databit, int stopbit, int parity); *
1751 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1752 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1753 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1754 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1755 * 12. MoxaPortLineStatus(int port); *
1756 * 13. MoxaPortDCDChange(int port); *
1757 * 14. MoxaPortDCDON(int port); *
1758 * 15. MoxaPortFlushData(int port, int mode); *
1759 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1760 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1761 * 18. MoxaPortTxBufSize(int port); *
1762 * 19. MoxaPortRxBufSize(int port); *
1763 * 20. MoxaPortTxQueue(int port); *
1764 * 21. MoxaPortTxFree(int port); *
1765 * 22. MoxaPortRxQueue(int port); *
1766 * 23. MoxaPortRxFree(int port); *
1767 * 24. MoxaPortTxDisable(int port); *
1768 * 25. MoxaPortTxEnable(int port); *
1769 * 26. MoxaPortGetBrkCnt(int port); *
1770 * 27. MoxaPortResetBrkCnt(int port); *
1771 * 28. MoxaPortSetXonXoff(int port, int xonValue, int xoffValue); *
1772 * 29. MoxaPortIsTxHold(int port); *
1773 * 30. MoxaPortSendBreak(int port, int ticks); *
1774 *****************************************************************************/
1776 * Moxa Port Number Description:
1778 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1779 * the port number using in MOXA driver functions will be 0 to 31 for
1780 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1781 * to 127 for fourth. For example, if you setup three MOXA boards,
1782 * first board is C218, second board is C320-16 and third board is
1783 * C320-32. The port number of first board (C218 - 8 ports) is from
1784 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1785 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1786 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1787 * 127 will be invalid.
1790 * Moxa Functions Description:
1792 * Function 1: Driver initialization routine, this routine must be
1793 * called when initialized driver.
1795 * void MoxaDriverInit();
1798 * Function 2: Moxa driver private IOCTL command processing.
1800 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1802 * unsigned int cmd : IOCTL command
1803 * unsigned long arg : IOCTL argument
1804 * int port : port number (0 - 127)
1811 * Function 3: Moxa driver polling process routine.
1813 * int MoxaDriverPoll(void);
1815 * return: 0 ; polling O.K.
1816 * -1 : no any Moxa card.
1819 * Function 4: Get the ports of this card.
1821 * int MoxaPortsOfCard(int cardno);
1823 * int cardno : card number (0 - 3)
1825 * return: 0 : this card is invalid
1829 * Function 5: Check this port is valid or invalid
1831 * int MoxaPortIsValid(int port);
1832 * int port : port number (0 - 127, ref port description)
1834 * return: 0 : this port is invalid
1835 * 1 : this port is valid
1838 * Function 6: Enable this port to start Tx/Rx data.
1840 * void MoxaPortEnable(int port);
1841 * int port : port number (0 - 127)
1844 * Function 7: Disable this port
1846 * void MoxaPortDisable(int port);
1847 * int port : port number (0 - 127)
1850 * Function 8: Get the maximun available baud rate of this port.
1852 * long MoxaPortGetMaxBaud(int port);
1853 * int port : port number (0 - 127)
1855 * return: 0 : this port is invalid
1856 * 38400/57600/115200 bps
1859 * Function 9: Get the current baud rate of this port.
1861 * long MoxaPortGetCurBaud(int port);
1862 * int port : port number (0 - 127)
1864 * return: 0 : this port is invalid
1868 * Function 10: Setting baud rate of this port.
1870 * long MoxaPortSetBaud(int port, long baud);
1871 * int port : port number (0 - 127)
1872 * long baud : baud rate (50 - 115200)
1874 * return: 0 : this port is invalid or baud < 50
1875 * 50 - 115200 : the real baud rate set to the port, if
1876 * the argument baud is large than maximun
1877 * available baud rate, the real setting
1878 * baud rate will be the maximun baud rate.
1881 * Function 11: Setting the data-bits/stop-bits/parity of this port
1883 * int MoxaPortSetMode(int port, int databits, int stopbits, int parity);
1884 * int port : port number (0 - 127)
1885 * int databits : data bits (8/7/6/5)
1886 * int stopbits : stop bits (2/1/0, 0 show 1.5 stop bits)
1887 int parity : parity (0:None,1:Odd,2:Even,3:Mark,4:Space)
1889 * return: -1 : invalid parameter
1893 * Function 12: Configure the port.
1895 * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud);
1896 * int port : port number (0 - 127)
1897 * struct ktermios * termio : termio structure pointer
1898 * speed_t baud : baud rate
1900 * return: -1 : this port is invalid or termio == NULL
1904 * Function 13: Get the DTR/RTS state of this port.
1906 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1907 * int port : port number (0 - 127)
1908 * int * dtrState : pointer to INT to receive the current DTR
1909 * state. (if NULL, this function will not
1910 * write to this address)
1911 * int * rtsState : pointer to INT to receive the current RTS
1912 * state. (if NULL, this function will not
1913 * write to this address)
1915 * return: -1 : this port is invalid
1919 * Function 14: Setting the DTR/RTS output state of this port.
1921 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1922 * int port : port number (0 - 127)
1923 * int dtrState : DTR output state (0: off, 1: on)
1924 * int rtsState : RTS output state (0: off, 1: on)
1927 * Function 15: Setting the flow control of this port.
1929 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1930 * int txFlow,int xany);
1931 * int port : port number (0 - 127)
1932 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1933 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1934 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1935 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1936 * int xany : S/W XANY flow control (0: no, 1: yes)
1939 * Function 16: Get ths line status of this port
1941 * int MoxaPortLineStatus(int port);
1942 * int port : port number (0 - 127)
1944 * return: Bit 0 - CTS state (0: off, 1: on)
1945 * Bit 1 - DSR state (0: off, 1: on)
1946 * Bit 2 - DCD state (0: off, 1: on)
1949 * Function 17: Check the DCD state has changed since the last read
1952 * int MoxaPortDCDChange(int port);
1953 * int port : port number (0 - 127)
1955 * return: 0 : no changed
1956 * 1 : DCD has changed
1959 * Function 18: Check ths current DCD state is ON or not.
1961 * int MoxaPortDCDON(int port);
1962 * int port : port number (0 - 127)
1964 * return: 0 : DCD off
1968 * Function 19: Flush the Rx/Tx buffer data of this port.
1970 * void MoxaPortFlushData(int port, int mode);
1971 * int port : port number (0 - 127)
1973 * 0 : flush the Rx buffer
1974 * 1 : flush the Tx buffer
1975 * 2 : flush the Rx and Tx buffer
1978 * Function 20: Write data.
1980 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
1981 * int port : port number (0 - 127)
1982 * unsigned char * buffer : pointer to write data buffer.
1983 * int length : write data length
1985 * return: 0 - length : real write data length
1988 * Function 21: Read data.
1990 * int MoxaPortReadData(int port, struct tty_struct *tty);
1991 * int port : port number (0 - 127)
1992 * struct tty_struct *tty : tty for data
1994 * return: 0 - length : real read data length
1997 * Function 22: Get the Tx buffer size of this port
1999 * int MoxaPortTxBufSize(int port);
2000 * int port : port number (0 - 127)
2002 * return: .. : Tx buffer size
2005 * Function 23: Get the Rx buffer size of this port
2007 * int MoxaPortRxBufSize(int port);
2008 * int port : port number (0 - 127)
2010 * return: .. : Rx buffer size
2013 * Function 24: Get the Tx buffer current queued data bytes
2015 * int MoxaPortTxQueue(int port);
2016 * int port : port number (0 - 127)
2018 * return: .. : Tx buffer current queued data bytes
2021 * Function 25: Get the Tx buffer current free space
2023 * int MoxaPortTxFree(int port);
2024 * int port : port number (0 - 127)
2026 * return: .. : Tx buffer current free space
2029 * Function 26: Get the Rx buffer current queued data bytes
2031 * int MoxaPortRxQueue(int port);
2032 * int port : port number (0 - 127)
2034 * return: .. : Rx buffer current queued data bytes
2037 * Function 27: Get the Rx buffer current free space
2039 * int MoxaPortRxFree(int port);
2040 * int port : port number (0 - 127)
2042 * return: .. : Rx buffer current free space
2045 * Function 28: Disable port data transmission.
2047 * void MoxaPortTxDisable(int port);
2048 * int port : port number (0 - 127)
2051 * Function 29: Enable port data transmission.
2053 * void MoxaPortTxEnable(int port);
2054 * int port : port number (0 - 127)
2057 * Function 30: Get the received BREAK signal count.
2059 * int MoxaPortGetBrkCnt(int port);
2060 * int port : port number (0 - 127)
2062 * return: 0 - .. : BREAK signal count
2065 * Function 31: Get the received BREAK signal count and reset it.
2067 * int MoxaPortResetBrkCnt(int port);
2068 * int port : port number (0 - 127)
2070 * return: 0 - .. : BREAK signal count
2073 * Function 32: Set the S/W flow control new XON/XOFF value, default
2074 * XON is 0x11 & XOFF is 0x13.
2076 * void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue);
2077 * int port : port number (0 - 127)
2078 * int xonValue : new XON value (0 - 255)
2079 * int xoffValue : new XOFF value (0 - 255)
2082 * Function 33: Check this port's transmission is hold by remote site
2083 * because the flow control.
2085 * int MoxaPortIsTxHold(int port);
2086 * int port : port number (0 - 127)
2088 * return: 0 : normal
2089 * 1 : hold by remote site
2092 * Function 34: Send out a BREAK signal.
2094 * void MoxaPortSendBreak(int port, int ms100);
2095 * int port : port number (0 - 127)
2096 * int ms100 : break signal time interval.
2097 * unit: 100 mini-second. if ms100 == 0, it will
2098 * send out a about 250 ms BREAK signal.
2101 int MoxaPortIsValid(int port)
2106 if (moxaChkPort[port] == 0)
2111 void MoxaPortEnable(int port)
2113 void __iomem *ofsAddr;
2114 int MoxaPortLineStatus(int);
2115 short lowwater = 512;
2117 ofsAddr = moxaTableAddr[port];
2118 writew(lowwater, ofsAddr + Low_water);
2119 moxaBreakCnt[port] = 0;
2120 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2121 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2122 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
2124 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
2127 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
2128 moxafunc(ofsAddr, FC_FlushQueue, 2);
2130 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
2131 MoxaPortLineStatus(port);
2134 void MoxaPortDisable(int port)
2136 void __iomem *ofsAddr = moxaTableAddr[port];
2138 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
2139 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
2140 writew(0, ofsAddr + HostStat);
2141 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
2144 long MoxaPortGetMaxBaud(int port)
2146 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2147 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
2154 long MoxaPortSetBaud(int port, long baud)
2156 void __iomem *ofsAddr;
2160 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
2162 ofsAddr = moxaTableAddr[port];
2166 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2167 else if (max == 57600L)
2168 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2170 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2172 moxafunc(ofsAddr, FC_SetBaud, val);
2174 moxaCurBaud[port] = baud;
2178 int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud)
2180 void __iomem *ofsAddr;
2184 if (moxaChkPort[port] == 0 || termio == 0)
2186 ofsAddr = moxaTableAddr[port];
2187 cflag = termio->c_cflag; /* termio->c_cflag */
2189 mode = termio->c_cflag & CSIZE;
2192 else if (mode == CS6)
2194 else if (mode == CS7)
2196 else if (mode == CS8)
2199 if (termio->c_cflag & CSTOPB) {
2207 if (termio->c_cflag & PARENB) {
2208 if (termio->c_cflag & PARODD)
2215 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2217 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2218 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2219 if (baud >= 921600L)
2222 MoxaPortSetBaud(port, baud);
2224 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2225 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2226 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2227 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2228 wait_finish(ofsAddr);
2234 int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2237 if (!MoxaPortIsValid(port))
2240 if (moxaLineCtrl[port] & DTR_ON)
2246 if (moxaLineCtrl[port] & RTS_ON)
2254 void MoxaPortLineCtrl(int port, int dtr, int rts)
2256 void __iomem *ofsAddr;
2259 ofsAddr = moxaTableAddr[port];
2265 moxaLineCtrl[port] = mode;
2266 moxafunc(ofsAddr, FC_LineControl, mode);
2269 void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2271 void __iomem *ofsAddr;
2274 ofsAddr = moxaTableAddr[port];
2277 mode |= RTS_FlowCtl;
2279 mode |= CTS_FlowCtl;
2286 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2289 int MoxaPortLineStatus(int port)
2291 void __iomem *ofsAddr;
2294 ofsAddr = moxaTableAddr[port];
2295 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2296 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2297 moxafunc(ofsAddr, FC_LineStatus, 0);
2298 val = readw(ofsAddr + FuncArg);
2300 val = readw(ofsAddr + FlagStat) >> 4;
2305 if ((moxaDCDState[port] & DCD_oldstate) == 0)
2306 moxaDCDState[port] = (DCD_oldstate | DCD_changed);
2308 if (moxaDCDState[port] & DCD_oldstate)
2309 moxaDCDState[port] = DCD_changed;
2315 int MoxaPortDCDChange(int port)
2319 if (moxaChkPort[port] == 0)
2321 n = moxaDCDState[port];
2322 moxaDCDState[port] &= ~DCD_changed;
2327 int MoxaPortDCDON(int port)
2331 if (moxaChkPort[port] == 0)
2333 if (moxaDCDState[port] & DCD_oldstate)
2342 int MoxaDumpMem(int port, unsigned char * buffer, int len)
2345 unsigned long baseAddr,ofsAddr,ofs;
2347 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2348 ofs = baseAddr + DynPage_addr + pageofs;
2351 for (i = 0; i < len; i++)
2352 buffer[i] = readb(ofs+i);
2357 int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2362 ushort head, tx_mask, spage, epage;
2363 ushort pageno, pageofs, bufhead;
2364 void __iomem *baseAddr, *ofsAddr, *ofs;
2366 ofsAddr = moxaTableAddr[port];
2367 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2368 tx_mask = readw(ofsAddr + TX_mask);
2369 spage = readw(ofsAddr + Page_txb);
2370 epage = readw(ofsAddr + EndPage_txb);
2371 tail = readw(ofsAddr + TXwptr);
2372 head = readw(ofsAddr + TXrptr);
2373 c = (head > tail) ? (head - tail - 1)
2374 : (head - tail + tx_mask);
2377 moxaLog.txcnt[port] += c;
2379 if (spage == epage) {
2380 bufhead = readw(ofsAddr + Ofs_txb);
2381 writew(spage, baseAddr + Control_reg);
2384 len = head - tail - 1;
2386 len = tx_mask + 1 - tail;
2387 len = (c > len) ? len : c;
2388 ofs = baseAddr + DynPage_addr + bufhead + tail;
2389 for (i = 0; i < len; i++)
2390 writeb(*buffer++, ofs + i);
2391 tail = (tail + len) & tx_mask;
2394 writew(tail, ofsAddr + TXwptr);
2397 pageno = spage + (tail >> 13);
2398 pageofs = tail & Page_mask;
2400 cnt = Page_size - pageofs;
2404 writeb(pageno, baseAddr + Control_reg);
2405 ofs = baseAddr + DynPage_addr + pageofs;
2406 for (i = 0; i < cnt; i++)
2407 writeb(*buffer++, ofs + i);
2409 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2412 if (++pageno == epage)
2417 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2421 int MoxaPortReadData(int port, struct tty_struct *tty)
2423 register ushort head, pageofs;
2424 int i, count, cnt, len, total, remain;
2425 ushort tail, rx_mask, spage, epage;
2426 ushort pageno, bufhead;
2427 void __iomem *baseAddr, *ofsAddr, *ofs;
2429 ofsAddr = moxaTableAddr[port];
2430 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2431 head = readw(ofsAddr + RXrptr);
2432 tail = readw(ofsAddr + RXwptr);
2433 rx_mask = readw(ofsAddr + RX_mask);
2434 spage = readw(ofsAddr + Page_rxb);
2435 epage = readw(ofsAddr + EndPage_rxb);
2436 count = (tail >= head) ? (tail - head)
2437 : (tail - head + rx_mask + 1);
2442 remain = count - total;
2443 moxaLog.rxcnt[port] += total;
2445 if (spage == epage) {
2446 bufhead = readw(ofsAddr + Ofs_rxb);
2447 writew(spage, baseAddr + Control_reg);
2452 len = rx_mask + 1 - head;
2453 len = (count > len) ? len : count;
2454 ofs = baseAddr + DynPage_addr + bufhead + head;
2455 for (i = 0; i < len; i++)
2456 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2457 head = (head + len) & rx_mask;
2460 writew(head, ofsAddr + RXrptr);
2463 pageno = spage + (head >> 13);
2464 pageofs = head & Page_mask;
2466 cnt = Page_size - pageofs;
2470 writew(pageno, baseAddr + Control_reg);
2471 ofs = baseAddr + DynPage_addr + pageofs;
2472 for (i = 0; i < cnt; i++)
2473 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2475 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2478 if (++pageno == epage)
2483 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2484 moxaLowWaterChk = 1;
2485 moxaLowChkFlag[port] = 1;
2491 int MoxaPortTxQueue(int port)
2493 void __iomem *ofsAddr;
2494 ushort rptr, wptr, mask;
2497 ofsAddr = moxaTableAddr[port];
2498 rptr = readw(ofsAddr + TXrptr);
2499 wptr = readw(ofsAddr + TXwptr);
2500 mask = readw(ofsAddr + TX_mask);
2501 len = (wptr - rptr) & mask;
2505 int MoxaPortTxFree(int port)
2507 void __iomem *ofsAddr;
2508 ushort rptr, wptr, mask;
2511 ofsAddr = moxaTableAddr[port];
2512 rptr = readw(ofsAddr + TXrptr);
2513 wptr = readw(ofsAddr + TXwptr);
2514 mask = readw(ofsAddr + TX_mask);
2515 len = mask - ((wptr - rptr) & mask);
2519 int MoxaPortRxQueue(int port)
2521 void __iomem *ofsAddr;
2522 ushort rptr, wptr, mask;
2525 ofsAddr = moxaTableAddr[port];
2526 rptr = readw(ofsAddr + RXrptr);
2527 wptr = readw(ofsAddr + RXwptr);
2528 mask = readw(ofsAddr + RX_mask);
2529 len = (wptr - rptr) & mask;
2534 void MoxaPortTxDisable(int port)
2536 void __iomem *ofsAddr;
2538 ofsAddr = moxaTableAddr[port];
2539 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2542 void MoxaPortTxEnable(int port)
2544 void __iomem *ofsAddr;
2546 ofsAddr = moxaTableAddr[port];
2547 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2551 int MoxaPortResetBrkCnt(int port)
2554 cnt = moxaBreakCnt[port];
2555 moxaBreakCnt[port] = 0;
2560 void MoxaPortSendBreak(int port, int ms100)
2562 void __iomem *ofsAddr;
2564 ofsAddr = moxaTableAddr[port];
2566 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2567 moxadelay(ms100 * (HZ / 10));
2569 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2570 moxadelay(HZ / 4); /* 250 ms */
2572 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2575 static int moxa_get_serial_info(struct moxa_str *info,
2576 struct serial_struct __user *retinfo)
2578 struct serial_struct tmp;
2580 memset(&tmp, 0, sizeof(tmp));
2581 tmp.type = info->type;
2582 tmp.line = info->port;
2585 tmp.flags = info->asyncflags;
2586 tmp.baud_base = 921600;
2587 tmp.close_delay = info->close_delay;
2588 tmp.closing_wait = info->closing_wait;
2589 tmp.custom_divisor = 0;
2591 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2597 static int moxa_set_serial_info(struct moxa_str *info,
2598 struct serial_struct __user *new_info)
2600 struct serial_struct new_serial;
2602 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2605 if ((new_serial.irq != 0) ||
2606 (new_serial.port != 0) ||
2607 // (new_serial.type != info->type) ||
2608 (new_serial.custom_divisor != 0) ||
2609 (new_serial.baud_base != 921600))
2612 if (!capable(CAP_SYS_ADMIN)) {
2613 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2614 (info->asyncflags & ~ASYNC_USR_MASK)))
2617 info->close_delay = new_serial.close_delay * HZ / 100;
2618 info->closing_wait = new_serial.closing_wait * HZ / 100;
2621 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2622 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2624 if (new_serial.type == PORT_16550A) {
2625 MoxaSetFifo(info->port, 1);
2627 MoxaSetFifo(info->port, 0);
2630 info->type = new_serial.type;
2636 /*****************************************************************************
2637 * Static local functions: *
2638 *****************************************************************************/
2640 * moxadelay - delays a specified number ticks
2642 static void moxadelay(int tick)
2644 unsigned long st, et;
2648 while (time_before(jiffies, et));
2651 static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
2654 writew(arg, ofsAddr + FuncArg);
2655 writew(cmd, ofsAddr + FuncCode);
2656 wait_finish(ofsAddr);
2659 static void wait_finish(void __iomem *ofsAddr)
2664 while (readw(ofsAddr + FuncCode) != 0) {
2666 if ((j - i) > moxaFuncTout) {
2672 static void low_water_check(void __iomem *ofsAddr)
2675 ushort rptr, wptr, mask;
2677 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2678 rptr = readw(ofsAddr + RXrptr);
2679 wptr = readw(ofsAddr + RXwptr);
2680 mask = readw(ofsAddr + RX_mask);
2681 len = (wptr - rptr) & mask;
2682 if (len <= Low_water)
2683 moxafunc(ofsAddr, FC_SendXon, 0);
2687 static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2689 void __iomem *baseAddr;
2692 if(copy_from_user(moxaBuff, tmp, len))
2694 baseAddr = moxaBaseAddr[cardno];
2695 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2696 moxadelay(1); /* delay 10 ms */
2697 for (i = 0; i < 4096; i++)
2698 writeb(0, baseAddr + i); /* clear fix page */
2699 for (i = 0; i < len; i++)
2700 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2701 writeb(0, baseAddr + Control_reg); /* restart */
2705 static int moxafindcard(int cardno)
2707 void __iomem *baseAddr;
2710 baseAddr = moxaBaseAddr[cardno];
2711 switch (moxa_boards[cardno].boardType) {
2712 case MOXA_BOARD_C218_ISA:
2713 case MOXA_BOARD_C218_PCI:
2714 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2718 case MOXA_BOARD_CP204J:
2719 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2724 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2727 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2734 static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2736 void __iomem *baseAddr;
2739 if(len > sizeof(moxaBuff))
2741 if(copy_from_user(moxaBuff, tmp, len))
2743 baseAddr = moxaBaseAddr[cardno];
2744 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2745 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2746 for (i = 0; i < 7168; i++)
2747 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2748 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2749 for (i = 0; i < (len - 7168); i++)
2750 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2754 static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2756 void __iomem *baseAddr, *ofsAddr;
2757 int retval, port, i;
2759 if(copy_from_user(moxaBuff, tmp, len))
2761 baseAddr = moxaBaseAddr[cardno];
2762 switch (moxa_boards[cardno].boardType) {
2763 case MOXA_BOARD_C218_ISA:
2764 case MOXA_BOARD_C218_PCI:
2765 case MOXA_BOARD_CP204J:
2766 retval = moxaloadc218(cardno, baseAddr, len);
2769 port = cardno * MAX_PORTS_PER_BOARD;
2770 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2771 moxaChkPort[port] = 1;
2772 moxaCurBaud[port] = 9600L;
2773 moxaDCDState[port] = 0;
2774 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2775 ofsAddr = moxaTableAddr[port];
2776 writew(C218rx_mask, ofsAddr + RX_mask);
2777 writew(C218tx_mask, ofsAddr + TX_mask);
2778 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2779 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2781 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2782 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2787 retval = moxaloadc320(cardno, baseAddr, len,
2788 &moxa_boards[cardno].numPorts);
2791 port = cardno * MAX_PORTS_PER_BOARD;
2792 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2793 moxaChkPort[port] = 1;
2794 moxaCurBaud[port] = 9600L;
2795 moxaDCDState[port] = 0;
2796 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2797 ofsAddr = moxaTableAddr[port];
2798 if (moxa_boards[cardno].numPorts == 8) {
2799 writew(C320p8rx_mask, ofsAddr + RX_mask);
2800 writew(C320p8tx_mask, ofsAddr + TX_mask);
2801 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2802 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2803 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2804 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2806 } else if (moxa_boards[cardno].numPorts == 16) {
2807 writew(C320p16rx_mask, ofsAddr + RX_mask);
2808 writew(C320p16tx_mask, ofsAddr + TX_mask);
2809 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2810 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2811 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2812 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2814 } else if (moxa_boards[cardno].numPorts == 24) {
2815 writew(C320p24rx_mask, ofsAddr + RX_mask);
2816 writew(C320p24tx_mask, ofsAddr + TX_mask);
2817 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2818 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2819 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2820 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2821 } else if (moxa_boards[cardno].numPorts == 32) {
2822 writew(C320p32rx_mask, ofsAddr + RX_mask);
2823 writew(C320p32tx_mask, ofsAddr + TX_mask);
2824 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2825 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2826 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2827 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2828 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2833 loadstat[cardno] = 1;
2837 static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
2840 int i, j, len1, len2;
2841 ushort usum, *ptr, keycode;
2843 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2844 keycode = CP204J_KeyCode;
2846 keycode = C218_KeyCode;
2849 ptr = (ushort *) moxaBuff;
2850 for (i = 0; i < len1; i++)
2851 usum += le16_to_cpu(*(ptr + i));
2857 len2 = (len1 > 2048) ? 2048 : len1;
2859 for (i = 0; i < len2 << 1; i++)
2860 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2863 writew(len2, baseAddr + C218DLoad_len);
2864 writew(0, baseAddr + C218_key);
2865 for (i = 0; i < 100; i++) {
2866 if (readw(baseAddr + C218_key) == keycode)
2868 moxadelay(1); /* delay 10 ms */
2870 if (readw(baseAddr + C218_key) != keycode) {
2874 writew(0, baseAddr + C218DLoad_len);
2875 writew(usum, baseAddr + C218check_sum);
2876 writew(0, baseAddr + C218_key);
2877 for (i = 0; i < 100; i++) {
2878 if (readw(baseAddr + C218_key) == keycode)
2880 moxadelay(1); /* delay 10 ms */
2883 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2884 if (readb(baseAddr + C218chksum_ok) != 1) {
2887 writew(0, baseAddr + C218_key);
2888 for (i = 0; i < 100; i++) {
2889 if (readw(baseAddr + Magic_no) == Magic_code)
2891 moxadelay(1); /* delay 10 ms */
2893 if (readw(baseAddr + Magic_no) != Magic_code) {
2896 writew(1, baseAddr + Disable_IRQ);
2897 writew(0, baseAddr + Magic_no);
2898 for (i = 0; i < 100; i++) {
2899 if (readw(baseAddr + Magic_no) == Magic_code)
2901 moxadelay(1); /* delay 10 ms */
2903 if (readw(baseAddr + Magic_no) != Magic_code) {
2907 moxaIntNdx[cardno] = baseAddr + IRQindex;
2908 moxaIntPend[cardno] = baseAddr + IRQpending;
2909 moxaIntTable[cardno] = baseAddr + IRQtable;
2913 static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
2916 int i, j, wlen, len2, retry;
2921 uptr = (ushort *) moxaBuff;
2922 for (i = 0; i < wlen; i++)
2923 usum += le16_to_cpu(uptr[i]);
2934 for (i = 0; i < len2; i++)
2935 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
2938 writew(len2, baseAddr + C320DLoad_len);
2939 writew(0, baseAddr + C320_key);
2940 for (i = 0; i < 10; i++) {
2941 if (readw(baseAddr + C320_key) == C320_KeyCode)
2945 if (readw(baseAddr + C320_key) != C320_KeyCode)
2948 writew(0, baseAddr + C320DLoad_len);
2949 writew(usum, baseAddr + C320check_sum);
2950 writew(0, baseAddr + C320_key);
2951 for (i = 0; i < 10; i++) {
2952 if (readw(baseAddr + C320_key) == C320_KeyCode)
2957 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
2958 if (readb(baseAddr + C320chksum_ok) != 1)
2960 writew(0, baseAddr + C320_key);
2961 for (i = 0; i < 600; i++) {
2962 if (readw(baseAddr + Magic_no) == Magic_code)
2966 if (readw(baseAddr + Magic_no) != Magic_code)
2969 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
2970 writew(0x3800, baseAddr + TMS320_PORT1);
2971 writew(0x3900, baseAddr + TMS320_PORT2);
2972 writew(28499, baseAddr + TMS320_CLOCK);
2974 writew(0x3200, baseAddr + TMS320_PORT1);
2975 writew(0x3400, baseAddr + TMS320_PORT2);
2976 writew(19999, baseAddr + TMS320_CLOCK);
2978 writew(1, baseAddr + Disable_IRQ);
2979 writew(0, baseAddr + Magic_no);
2980 for (i = 0; i < 500; i++) {
2981 if (readw(baseAddr + Magic_no) == Magic_code)
2985 if (readw(baseAddr + Magic_no) != Magic_code)
2988 j = readw(baseAddr + Module_cnt);
2992 writew(j, baseAddr + Module_no);
2993 writew(0, baseAddr + Magic_no);
2994 for (i = 0; i < 600; i++) {
2995 if (readw(baseAddr + Magic_no) == Magic_code)
2999 if (readw(baseAddr + Magic_no) != Magic_code)
3002 moxaIntNdx[cardno] = baseAddr + IRQindex;
3003 moxaIntPend[cardno] = baseAddr + IRQpending;
3004 moxaIntTable[cardno] = baseAddr + IRQtable;
3009 long MoxaPortGetCurBaud(int port)
3012 if (moxaChkPort[port] == 0)
3014 return (moxaCurBaud[port]);
3018 static void MoxaSetFifo(int port, int enable)
3020 void __iomem *ofsAddr = moxaTableAddr[port];
3023 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
3024 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
3026 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
3027 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
3032 int MoxaPortSetMode(int port, int databits, int stopbits, int parity)
3034 void __iomem *ofsAddr;
3057 break; /* stop bits 1.5 */
3086 ofsAddr = moxaTableAddr[port];
3087 moxafunc(ofsAddr, FC_SetMode, val);
3091 int MoxaPortTxBufSize(int port)
3093 void __iomem *ofsAddr;
3096 ofsAddr = moxaTableAddr[port];
3097 size = readw(ofsAddr + TX_mask);
3101 int MoxaPortRxBufSize(int port)
3103 void __iomem *ofsAddr;
3106 ofsAddr = moxaTableAddr[port];
3107 size = readw(ofsAddr + RX_mask);
3111 int MoxaPortRxFree(int port)
3113 void __iomem *ofsAddr;
3114 ushort rptr, wptr, mask;
3117 ofsAddr = moxaTableAddr[port];
3118 rptr = readw(ofsAddr + RXrptr);
3119 wptr = readw(ofsAddr + RXwptr);
3120 mask = readw(ofsAddr + RX_mask);
3121 len = mask - ((wptr - rptr) & mask);
3124 int MoxaPortGetBrkCnt(int port)
3126 return (moxaBreakCnt[port]);
3129 void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue)
3131 void __iomem *ofsAddr;
3133 ofsAddr = moxaTableAddr[port];
3134 writew(xonValue, ofsAddr + FuncArg);
3135 writew(xoffValue, ofsAddr + FuncArg1);
3136 writew(FC_SetXonXoff, ofsAddr + FuncCode);
3137 wait_finish(ofsAddr);
3140 int MoxaPortIsTxHold(int port)
3142 void __iomem *ofsAddr;
3145 ofsAddr = moxaTableAddr[port];
3146 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
3147 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
3148 moxafunc(ofsAddr, FC_GetCCSR, 0);
3149 val = readw(ofsAddr + FuncArg);
3153 if (readw(ofsAddr + FlagStat) & Tx_flowOff)