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[4];
199 static int numports[4];
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);
216 static void do_moxa_softint(struct work_struct *);
217 static int moxa_open(struct tty_struct *, struct file *);
218 static void moxa_close(struct tty_struct *, struct file *);
219 static int moxa_write(struct tty_struct *, const unsigned char *, int);
220 static int moxa_write_room(struct tty_struct *);
221 static void moxa_flush_buffer(struct tty_struct *);
222 static int moxa_chars_in_buffer(struct tty_struct *);
223 static void moxa_flush_chars(struct tty_struct *);
224 static void moxa_put_char(struct tty_struct *, unsigned char);
225 static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
226 static void moxa_throttle(struct tty_struct *);
227 static void moxa_unthrottle(struct tty_struct *);
228 static void moxa_set_termios(struct tty_struct *, struct ktermios *);
229 static void moxa_stop(struct tty_struct *);
230 static void moxa_start(struct tty_struct *);
231 static void moxa_hangup(struct tty_struct *);
232 static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
233 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
234 unsigned int set, unsigned int clear);
235 static void moxa_poll(unsigned long);
236 static void set_tty_param(struct tty_struct *);
237 static int block_till_ready(struct tty_struct *, struct file *,
239 static void setup_empty_event(struct tty_struct *);
240 static void check_xmit_empty(unsigned long);
241 static void shut_down(struct moxa_str *);
242 static void receive_data(struct moxa_str *);
244 * moxa board interface functions:
246 static void MoxaDriverInit(void);
247 static int MoxaDriverIoctl(unsigned int, unsigned long, int);
248 static int MoxaDriverPoll(void);
249 static int MoxaPortsOfCard(int);
250 static int MoxaPortIsValid(int);
251 static void MoxaPortEnable(int);
252 static void MoxaPortDisable(int);
253 static long MoxaPortGetMaxBaud(int);
254 static long MoxaPortSetBaud(int, long);
255 static int MoxaPortSetTermio(int, struct ktermios *, speed_t);
256 static int MoxaPortGetLineOut(int, int *, int *);
257 static void MoxaPortLineCtrl(int, int, int);
258 static void MoxaPortFlowCtrl(int, int, int, int, int, int);
259 static int MoxaPortLineStatus(int);
260 static int MoxaPortDCDChange(int);
261 static int MoxaPortDCDON(int);
262 static void MoxaPortFlushData(int, int);
263 static int MoxaPortWriteData(int, unsigned char *, int);
264 static int MoxaPortReadData(int, struct tty_struct *tty);
265 static int MoxaPortTxQueue(int);
266 static int MoxaPortRxQueue(int);
267 static int MoxaPortTxFree(int);
268 static void MoxaPortTxDisable(int);
269 static void MoxaPortTxEnable(int);
270 static int MoxaPortResetBrkCnt(int);
271 static void MoxaPortSendBreak(int, int);
272 static int moxa_get_serial_info(struct moxa_str *, struct serial_struct __user *);
273 static int moxa_set_serial_info(struct moxa_str *, struct serial_struct __user *);
274 static void MoxaSetFifo(int port, int enable);
276 static const struct tty_operations moxa_ops = {
280 .write_room = moxa_write_room,
281 .flush_buffer = moxa_flush_buffer,
282 .chars_in_buffer = moxa_chars_in_buffer,
283 .flush_chars = moxa_flush_chars,
284 .put_char = moxa_put_char,
286 .throttle = moxa_throttle,
287 .unthrottle = moxa_unthrottle,
288 .set_termios = moxa_set_termios,
291 .hangup = moxa_hangup,
292 .tiocmget = moxa_tiocmget,
293 .tiocmset = moxa_tiocmset,
296 static struct tty_driver *moxaDriver;
297 static struct moxa_str moxaChannels[MAX_PORTS];
298 static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0);
299 static struct timer_list moxaEmptyTimer[MAX_PORTS];
300 static DEFINE_SPINLOCK(moxa_lock);
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;
323 board->pciInfo.pdev = p;
324 /* don't lose the reference in the next pci_get_device iteration */
329 #endif /* CONFIG_PCI */
331 static int __init moxa_init(void)
336 printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION);
337 moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
341 moxaDriver->owner = THIS_MODULE;
342 moxaDriver->name = "ttyMX";
343 moxaDriver->major = ttymajor;
344 moxaDriver->minor_start = 0;
345 moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
346 moxaDriver->subtype = SERIAL_TYPE_NORMAL;
347 moxaDriver->init_termios = tty_std_termios;
348 moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
349 moxaDriver->init_termios.c_ispeed = 9600;
350 moxaDriver->init_termios.c_ospeed = 9600;
351 moxaDriver->flags = TTY_DRIVER_REAL_RAW;
352 tty_set_operations(moxaDriver, &moxa_ops);
354 for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) {
355 ch->type = PORT_16550A;
357 INIT_WORK(&ch->tqueue, do_moxa_softint);
358 ch->close_delay = 5 * HZ / 10;
359 ch->closing_wait = 30 * HZ;
360 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
361 init_waitqueue_head(&ch->open_wait);
362 init_waitqueue_head(&ch->close_wait);
365 printk("Tty devices major number = %d\n", ttymajor);
367 if (tty_register_driver(moxaDriver)) {
368 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
369 put_tty_driver(moxaDriver);
372 for (i = 0; i < MAX_PORTS; i++)
373 setup_timer(&moxaEmptyTimer[i], check_xmit_empty,
374 (unsigned long)&moxaChannels[i]);
376 mod_timer(&moxaTimer, jiffies + HZ / 50);
378 /* Find the boards defined in source code */
380 for (i = 0; i < MAX_BOARDS; i++) {
381 if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) ||
382 (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) {
383 moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType;
384 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
385 moxa_boards[numBoards].numPorts = 8;
387 moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts;
388 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
389 moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr;
391 printk("Board %2d: %s board(baseAddr=%lx)\n",
393 moxa_brdname[moxa_boards[numBoards].boardType - 1],
394 moxa_boards[numBoards].baseAddr);
398 /* Find the boards defined form module args. */
400 for (i = 0; i < MAX_BOARDS; i++) {
401 if ((type[i] == MOXA_BOARD_C218_ISA) ||
402 (type[i] == MOXA_BOARD_C320_ISA)) {
404 printk("Board %2d: %s board(baseAddr=%lx)\n",
406 moxa_brdname[type[i] - 1],
407 (unsigned long) baseaddr[i]);
408 if (numBoards >= MAX_BOARDS) {
410 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
413 moxa_boards[numBoards].boardType = type[i];
414 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
415 moxa_boards[numBoards].numPorts = 8;
417 moxa_boards[numBoards].numPorts = numports[i];
418 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
419 moxa_boards[numBoards].baseAddr = baseaddr[i];
424 /* Find PCI boards here */
427 struct pci_dev *p = NULL;
428 int n = ARRAY_SIZE(moxa_pcibrds) - 1;
431 while ((p = pci_get_device(moxa_pcibrds[i].vendor, moxa_pcibrds[i].device, p))!=NULL)
433 if (pci_enable_device(p))
435 if (numBoards >= MAX_BOARDS) {
437 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
439 moxa_get_PCI_conf(p, moxa_pcibrds[i].driver_data,
440 &moxa_boards[numBoards]);
448 for (i = 0; i < numBoards; i++) {
449 moxaBaseAddr[i] = ioremap((unsigned long) moxa_boards[i].baseAddr, 0x4000);
455 static void __exit moxa_exit(void)
460 printk("Unloading module moxa ...\n");
462 del_timer(&moxaTimer);
464 for (i = 0; i < MAX_PORTS; i++)
465 del_timer(&moxaEmptyTimer[i]);
467 if (tty_unregister_driver(moxaDriver))
468 printk("Couldn't unregister MOXA Intellio family serial driver\n");
469 put_tty_driver(moxaDriver);
471 for (i = 0; i < MAX_BOARDS; i++) {
473 iounmap(moxaBaseAddr[i]);
474 if (moxa_boards[i].busType == MOXA_BUS_TYPE_PCI)
475 pci_dev_put(moxa_boards[i].pciInfo.pdev);
482 module_init(moxa_init);
483 module_exit(moxa_exit);
485 static void do_moxa_softint(struct work_struct *work)
487 struct moxa_str *ch = container_of(work, struct moxa_str, tqueue);
488 struct tty_struct *tty;
490 if (ch && (tty = ch->tty)) {
491 if (test_and_clear_bit(MOXA_EVENT_HANGUP, &ch->event)) {
492 tty_hangup(tty); /* FIXME: module removal race here - AKPM */
493 wake_up_interruptible(&ch->open_wait);
494 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
499 static int moxa_open(struct tty_struct *tty, struct file *filp)
506 if (port == MAX_PORTS) {
509 if (!MoxaPortIsValid(port)) {
510 tty->driver_data = NULL;
514 ch = &moxaChannels[port];
516 tty->driver_data = ch;
518 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
521 MoxaPortLineCtrl(ch->port, 1, 1);
522 MoxaPortEnable(ch->port);
523 ch->asyncflags |= ASYNC_INITIALIZED;
525 retval = block_till_ready(tty, filp, ch);
527 moxa_unthrottle(tty);
529 if (ch->type == PORT_16550A) {
530 MoxaSetFifo(ch->port, 1);
532 MoxaSetFifo(ch->port, 0);
538 static void moxa_close(struct tty_struct *tty, struct file *filp)
544 if (port == MAX_PORTS) {
547 if (!MoxaPortIsValid(port)) {
548 #ifdef SERIAL_DEBUG_CLOSE
549 printk("Invalid portno in moxa_close\n");
551 tty->driver_data = NULL;
554 if (tty->driver_data == NULL) {
557 if (tty_hung_up_p(filp)) {
560 ch = (struct moxa_str *) tty->driver_data;
562 if ((tty->count == 1) && (ch->count != 1)) {
563 printk("moxa_close: bad serial port count; tty->count is 1, "
564 "ch->count is %d\n", ch->count);
567 if (--ch->count < 0) {
568 printk("moxa_close: bad serial port count, device=%s\n",
575 ch->asyncflags |= ASYNC_CLOSING;
577 ch->cflag = tty->termios->c_cflag;
578 if (ch->asyncflags & ASYNC_INITIALIZED) {
579 setup_empty_event(tty);
580 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
581 del_timer(&moxaEmptyTimer[ch->port]);
584 MoxaPortFlushData(port, 2);
586 if (tty->driver->flush_buffer)
587 tty->driver->flush_buffer(tty);
588 tty_ldisc_flush(tty);
593 if (ch->blocked_open) {
594 if (ch->close_delay) {
595 msleep_interruptible(jiffies_to_msecs(ch->close_delay));
597 wake_up_interruptible(&ch->open_wait);
599 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
600 wake_up_interruptible(&ch->close_wait);
603 static int moxa_write(struct tty_struct *tty,
604 const unsigned char *buf, int count)
610 ch = (struct moxa_str *) tty->driver_data;
615 spin_lock_irqsave(&moxa_lock, flags);
616 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
617 spin_unlock_irqrestore(&moxa_lock, flags);
619 /*********************************************
620 if ( !(ch->statusflags & LOWWAIT) &&
621 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
622 ************************************************/
623 ch->statusflags |= LOWWAIT;
627 static int moxa_write_room(struct tty_struct *tty)
633 ch = (struct moxa_str *) tty->driver_data;
636 return (MoxaPortTxFree(ch->port));
639 static void moxa_flush_buffer(struct tty_struct *tty)
641 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
645 MoxaPortFlushData(ch->port, 1);
649 static int moxa_chars_in_buffer(struct tty_struct *tty)
652 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
655 * Sigh...I have to check if driver_data is NULL here, because
656 * if an open() fails, the TTY subsystem eventually calls
657 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
658 * routine. And since the open() failed, we return 0 here. TDJ
662 chars = MoxaPortTxQueue(ch->port);
665 * Make it possible to wakeup anything waiting for output
666 * in tty_ioctl.c, etc.
668 if (!(ch->statusflags & EMPTYWAIT))
669 setup_empty_event(tty);
674 static void moxa_flush_chars(struct tty_struct *tty)
677 * Don't think I need this, because this is called to empty the TX
678 * buffer for the 16450, 16550, etc.
682 static void moxa_put_char(struct tty_struct *tty, unsigned char c)
688 ch = (struct moxa_str *) tty->driver_data;
692 spin_lock_irqsave(&moxa_lock, flags);
693 MoxaPortWriteData(port, &c, 1);
694 spin_unlock_irqrestore(&moxa_lock, flags);
695 /************************************************
696 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
697 *************************************************/
698 ch->statusflags |= LOWWAIT;
701 static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
703 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
705 int flag = 0, dtr, rts;
708 if ((port != MAX_PORTS) && (!ch))
711 MoxaPortGetLineOut(ch->port, &dtr, &rts);
716 dtr = MoxaPortLineStatus(ch->port);
726 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
727 unsigned int set, unsigned int clear)
729 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
734 if ((port != MAX_PORTS) && (!ch))
737 MoxaPortGetLineOut(ch->port, &dtr, &rts);
742 if (clear & TIOCM_RTS)
744 if (clear & TIOCM_DTR)
746 MoxaPortLineCtrl(ch->port, dtr, rts);
750 static int moxa_ioctl(struct tty_struct *tty, struct file *file,
751 unsigned int cmd, unsigned long arg)
753 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
755 void __user *argp = (void __user *)arg;
759 if ((port != MAX_PORTS) && (!ch))
763 case TCSBRK: /* SVID version: non-zero arg --> no break */
764 retval = tty_check_change(tty);
767 setup_empty_event(tty);
768 tty_wait_until_sent(tty, 0);
770 MoxaPortSendBreak(ch->port, 0);
772 case TCSBRKP: /* support for POSIX tcsendbreak() */
773 retval = tty_check_change(tty);
776 setup_empty_event(tty);
777 tty_wait_until_sent(tty, 0);
778 MoxaPortSendBreak(ch->port, arg);
781 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
783 if(get_user(retval, (unsigned long __user *) argp))
786 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
789 ch->asyncflags &= ~ASYNC_CHECK_CD;
791 ch->asyncflags |= ASYNC_CHECK_CD;
794 return moxa_get_serial_info(ch, argp);
797 return moxa_set_serial_info(ch, argp);
799 retval = MoxaDriverIoctl(cmd, arg, port);
804 static void moxa_throttle(struct tty_struct *tty)
806 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
808 ch->statusflags |= THROTTLE;
811 static void moxa_unthrottle(struct tty_struct *tty)
813 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
815 ch->statusflags &= ~THROTTLE;
818 static void moxa_set_termios(struct tty_struct *tty,
819 struct ktermios *old_termios)
821 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
826 if (!(old_termios->c_cflag & CLOCAL) &&
827 (tty->termios->c_cflag & CLOCAL))
828 wake_up_interruptible(&ch->open_wait);
831 static void moxa_stop(struct tty_struct *tty)
833 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
837 MoxaPortTxDisable(ch->port);
838 ch->statusflags |= TXSTOPPED;
842 static void moxa_start(struct tty_struct *tty)
844 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
849 if (!(ch->statusflags & TXSTOPPED))
852 MoxaPortTxEnable(ch->port);
853 ch->statusflags &= ~TXSTOPPED;
856 static void moxa_hangup(struct tty_struct *tty)
858 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
860 moxa_flush_buffer(tty);
864 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
866 wake_up_interruptible(&ch->open_wait);
869 static void moxa_poll(unsigned long ignored)
873 struct tty_struct *tp;
876 del_timer(&moxaTimer);
878 if (MoxaDriverPoll() < 0) {
879 mod_timer(&moxaTimer, jiffies + HZ / 50);
882 for (card = 0; card < MAX_BOARDS; card++) {
883 if ((ports = MoxaPortsOfCard(card)) <= 0)
885 ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
886 for (i = 0; i < ports; i++, ch++) {
887 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
889 if (!(ch->statusflags & THROTTLE) &&
890 (MoxaPortRxQueue(ch->port) > 0))
892 if ((tp = ch->tty) == 0)
894 if (ch->statusflags & LOWWAIT) {
895 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
897 ch->statusflags &= ~LOWWAIT;
902 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
903 tty_insert_flip_char(tp, 0, TTY_BREAK);
904 tty_schedule_flip(tp);
906 if (MoxaPortDCDChange(ch->port)) {
907 if (ch->asyncflags & ASYNC_CHECK_CD) {
908 if (MoxaPortDCDON(ch->port))
909 wake_up_interruptible(&ch->open_wait);
911 set_bit(MOXA_EVENT_HANGUP, &ch->event);
912 schedule_work(&ch->tqueue);
919 mod_timer(&moxaTimer, jiffies + HZ / 50);
922 /******************************************************************************/
924 static void set_tty_param(struct tty_struct *tty)
926 register struct ktermios *ts;
928 int rts, cts, txflow, rxflow, xany;
930 ch = (struct moxa_str *) tty->driver_data;
932 if (ts->c_cflag & CLOCAL)
933 ch->asyncflags &= ~ASYNC_CHECK_CD;
935 ch->asyncflags |= ASYNC_CHECK_CD;
936 rts = cts = txflow = rxflow = xany = 0;
937 if (ts->c_cflag & CRTSCTS)
939 if (ts->c_iflag & IXON)
941 if (ts->c_iflag & IXOFF)
943 if (ts->c_iflag & IXANY)
945 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
946 MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty));
949 static int block_till_ready(struct tty_struct *tty, struct file *filp,
952 DECLARE_WAITQUEUE(wait,current);
955 int do_clocal = C_CLOCAL(tty);
958 * If the device is in the middle of being closed, then block
959 * until it's done, and then try again.
961 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
962 if (ch->asyncflags & ASYNC_CLOSING)
963 interruptible_sleep_on(&ch->close_wait);
964 #ifdef SERIAL_DO_RESTART
965 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
968 return (-ERESTARTSYS);
974 * If non-blocking mode is set, then make the check up front
977 if (filp->f_flags & O_NONBLOCK) {
978 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
982 * Block waiting for the carrier detect and the line to become free
985 add_wait_queue(&ch->open_wait, &wait);
986 #ifdef SERIAL_DEBUG_OPEN
987 printk("block_til_ready before block: ttys%d, count = %d\n",
988 ch->line, ch->count);
990 spin_lock_irqsave(&moxa_lock, flags);
991 if (!tty_hung_up_p(filp))
994 spin_unlock_irqrestore(&moxa_lock, flags);
997 set_current_state(TASK_INTERRUPTIBLE);
998 if (tty_hung_up_p(filp) ||
999 !(ch->asyncflags & ASYNC_INITIALIZED)) {
1000 #ifdef SERIAL_DO_RESTART
1001 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1004 retval = -ERESTARTSYS;
1010 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
1011 MoxaPortDCDON(ch->port)))
1014 if (signal_pending(current)) {
1015 retval = -ERESTARTSYS;
1020 set_current_state(TASK_RUNNING);
1021 remove_wait_queue(&ch->open_wait, &wait);
1023 spin_lock_irqsave(&moxa_lock, flags);
1024 if (!tty_hung_up_p(filp))
1027 spin_unlock_irqrestore(&moxa_lock, flags);
1028 #ifdef SERIAL_DEBUG_OPEN
1029 printk("block_til_ready after blocking: ttys%d, count = %d\n",
1030 ch->line, ch->count);
1034 /* FIXME: review to see if we need to use set_bit on these */
1035 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1039 static void setup_empty_event(struct tty_struct *tty)
1041 struct moxa_str *ch = tty->driver_data;
1042 unsigned long flags;
1044 spin_lock_irqsave(&moxa_lock, flags);
1045 ch->statusflags |= EMPTYWAIT;
1046 mod_timer(&moxaEmptyTimer[ch->port], jiffies + HZ);
1047 spin_unlock_irqrestore(&moxa_lock, flags);
1050 static void check_xmit_empty(unsigned long data)
1052 struct moxa_str *ch;
1054 ch = (struct moxa_str *) data;
1055 del_timer(&moxaEmptyTimer[ch->port]);
1056 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1057 if (MoxaPortTxQueue(ch->port) == 0) {
1058 ch->statusflags &= ~EMPTYWAIT;
1059 tty_wakeup(ch->tty);
1062 mod_timer(&moxaEmptyTimer[ch->port], jiffies + HZ);
1064 ch->statusflags &= ~EMPTYWAIT;
1067 static void shut_down(struct moxa_str *ch)
1069 struct tty_struct *tp;
1071 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1076 MoxaPortDisable(ch->port);
1079 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1081 if (tp->termios->c_cflag & HUPCL)
1082 MoxaPortLineCtrl(ch->port, 0, 0);
1084 ch->asyncflags &= ~ASYNC_INITIALIZED;
1087 static void receive_data(struct moxa_str *ch)
1089 struct tty_struct *tp;
1090 struct ktermios *ts;
1091 unsigned long flags;
1097 /**************************************************
1098 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1099 *****************************************************/
1101 MoxaPortFlushData(ch->port, 0);
1104 spin_lock_irqsave(&moxa_lock, flags);
1105 MoxaPortReadData(ch->port, tp);
1106 spin_unlock_irqrestore(&moxa_lock, flags);
1107 tty_schedule_flip(tp);
1110 #define Magic_code 0x404
1113 * System Configuration
1116 * for C218 BIOS initialization
1118 #define C218_ConfBase 0x800
1119 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1120 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1121 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1122 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1123 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1124 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1125 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1126 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1127 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1128 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1130 #define C218_LoadBuf 0x0F00
1131 #define C218_KeyCode 0x218
1132 #define CP204J_KeyCode 0x204
1135 * for C320 BIOS initialization
1137 #define C320_ConfBase 0x800
1138 #define C320_LoadBuf 0x0f00
1139 #define STS_init 0x05 /* for C320_status */
1141 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1142 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1143 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1144 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1145 #define C320check_sum C320_ConfBase + 8 /* WORD */
1146 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1147 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1148 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1150 #define C320_KeyCode 0x320
1152 #define FixPage_addr 0x0000 /* starting addr of static page */
1153 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1154 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1155 #define Control_reg 0x1ff0 /* select page and reset control */
1156 #define HW_reset 0x80
1161 #define FC_CardReset 0x80
1162 #define FC_ChannelReset 1 /* C320 firmware not supported */
1163 #define FC_EnableCH 2
1164 #define FC_DisableCH 3
1165 #define FC_SetParam 4
1166 #define FC_SetMode 5
1167 #define FC_SetRate 6
1168 #define FC_LineControl 7
1169 #define FC_LineStatus 8
1170 #define FC_XmitControl 9
1171 #define FC_FlushQueue 10
1172 #define FC_SendBreak 11
1173 #define FC_StopBreak 12
1174 #define FC_LoopbackON 13
1175 #define FC_LoopbackOFF 14
1176 #define FC_ClrIrqTable 15
1177 #define FC_SendXon 16
1178 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1179 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1180 #define FC_SetBreakIrq 19
1181 #define FC_SetLineIrq 20
1182 #define FC_SetFlowCtl 21
1183 #define FC_GenIrq 22
1184 #define FC_InCD180 23
1185 #define FC_OutCD180 24
1186 #define FC_InUARTreg 23
1187 #define FC_OutUARTreg 24
1188 #define FC_SetXonXoff 25
1189 #define FC_OutCD180CCR 26
1190 #define FC_ExtIQueue 27
1191 #define FC_ExtOQueue 28
1192 #define FC_ClrLineIrq 29
1193 #define FC_HWFlowCtl 30
1194 #define FC_GetClockRate 35
1195 #define FC_SetBaud 36
1196 #define FC_SetDataMode 41
1197 #define FC_GetCCSR 43
1198 #define FC_GetDataError 45
1199 #define FC_RxControl 50
1200 #define FC_ImmSend 51
1201 #define FC_SetXonState 52
1202 #define FC_SetXoffState 53
1203 #define FC_SetRxFIFOTrig 54
1204 #define FC_SetTxFIFOCnt 55
1205 #define FC_UnixRate 56
1206 #define FC_UnixResetTimer 57
1208 #define RxFIFOTrig1 0
1209 #define RxFIFOTrig4 1
1210 #define RxFIFOTrig8 2
1211 #define RxFIFOTrig14 3
1216 #define DRAM_global 0
1217 #define INT_data (DRAM_global + 0)
1218 #define Config_base (DRAM_global + 0x108)
1220 #define IRQindex (INT_data + 0)
1221 #define IRQpending (INT_data + 4)
1222 #define IRQtable (INT_data + 8)
1227 #define IntrRx 0x01 /* receiver data O.K. */
1228 #define IntrTx 0x02 /* transmit buffer empty */
1229 #define IntrFunc 0x04 /* function complete */
1230 #define IntrBreak 0x08 /* received break */
1231 #define IntrLine 0x10 /* line status change
1233 #define IntrIntr 0x20 /* received INTR code */
1234 #define IntrQuit 0x40 /* received QUIT code */
1235 #define IntrEOF 0x80 /* received EOF code */
1237 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1238 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1240 #define Magic_no (Config_base + 0)
1241 #define Card_model_no (Config_base + 2)
1242 #define Total_ports (Config_base + 4)
1243 #define Module_cnt (Config_base + 8)
1244 #define Module_no (Config_base + 10)
1245 #define Timer_10ms (Config_base + 14)
1246 #define Disable_IRQ (Config_base + 20)
1247 #define TMS320_PORT1 (Config_base + 22)
1248 #define TMS320_PORT2 (Config_base + 24)
1249 #define TMS320_CLOCK (Config_base + 26)
1252 * DATA BUFFER in DRAM
1254 #define Extern_table 0x400 /* Base address of the external table
1255 (24 words * 64) total 3K bytes
1256 (24 words * 128) total 6K bytes */
1257 #define Extern_size 0x60 /* 96 bytes */
1258 #define RXrptr 0x00 /* read pointer for RX buffer */
1259 #define RXwptr 0x02 /* write pointer for RX buffer */
1260 #define TXrptr 0x04 /* read pointer for TX buffer */
1261 #define TXwptr 0x06 /* write pointer for TX buffer */
1262 #define HostStat 0x08 /* IRQ flag and general flag */
1263 #define FlagStat 0x0A
1264 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1265 /* x x x x | | | | */
1266 /* | | | + CTS flow */
1267 /* | | +--- RTS flow */
1268 /* | +------ TX Xon/Xoff */
1269 /* +--------- RX Xon/Xoff */
1270 #define Break_cnt 0x0E /* received break count */
1271 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1272 #define RX_mask 0x12
1273 #define TX_mask 0x14
1274 #define Ofs_rxb 0x16
1275 #define Ofs_txb 0x18
1276 #define Page_rxb 0x1A
1277 #define Page_txb 0x1C
1278 #define EndPage_rxb 0x1E
1279 #define EndPage_txb 0x20
1280 #define Data_error 0x22
1281 #define RxTrigger 0x28
1282 #define TxTrigger 0x2a
1284 #define rRXwptr 0x34
1285 #define Low_water 0x36
1287 #define FuncCode 0x40
1288 #define FuncArg 0x42
1289 #define FuncArg1 0x44
1291 #define C218rx_size 0x2000 /* 8K bytes */
1292 #define C218tx_size 0x8000 /* 32K bytes */
1294 #define C218rx_mask (C218rx_size - 1)
1295 #define C218tx_mask (C218tx_size - 1)
1297 #define C320p8rx_size 0x2000
1298 #define C320p8tx_size 0x8000
1299 #define C320p8rx_mask (C320p8rx_size - 1)
1300 #define C320p8tx_mask (C320p8tx_size - 1)
1302 #define C320p16rx_size 0x2000
1303 #define C320p16tx_size 0x4000
1304 #define C320p16rx_mask (C320p16rx_size - 1)
1305 #define C320p16tx_mask (C320p16tx_size - 1)
1307 #define C320p24rx_size 0x2000
1308 #define C320p24tx_size 0x2000
1309 #define C320p24rx_mask (C320p24rx_size - 1)
1310 #define C320p24tx_mask (C320p24tx_size - 1)
1312 #define C320p32rx_size 0x1000
1313 #define C320p32tx_size 0x1000
1314 #define C320p32rx_mask (C320p32rx_size - 1)
1315 #define C320p32tx_mask (C320p32tx_size - 1)
1317 #define Page_size 0x2000
1318 #define Page_mask (Page_size - 1)
1319 #define C218rx_spage 3
1320 #define C218tx_spage 4
1321 #define C218rx_pageno 1
1322 #define C218tx_pageno 4
1323 #define C218buf_pageno 5
1325 #define C320p8rx_spage 3
1326 #define C320p8tx_spage 4
1327 #define C320p8rx_pgno 1
1328 #define C320p8tx_pgno 4
1329 #define C320p8buf_pgno 5
1331 #define C320p16rx_spage 3
1332 #define C320p16tx_spage 4
1333 #define C320p16rx_pgno 1
1334 #define C320p16tx_pgno 2
1335 #define C320p16buf_pgno 3
1337 #define C320p24rx_spage 3
1338 #define C320p24tx_spage 4
1339 #define C320p24rx_pgno 1
1340 #define C320p24tx_pgno 1
1341 #define C320p24buf_pgno 2
1343 #define C320p32rx_spage 3
1344 #define C320p32tx_ofs C320p32rx_size
1345 #define C320p32tx_spage 3
1346 #define C320p32buf_pgno 1
1351 #define WakeupRx 0x01
1352 #define WakeupTx 0x02
1353 #define WakeupBreak 0x08
1354 #define WakeupLine 0x10
1355 #define WakeupIntr 0x20
1356 #define WakeupQuit 0x40
1357 #define WakeupEOF 0x80 /* used in VTIME control */
1358 #define WakeupRxTrigger 0x100
1359 #define WakeupTxTrigger 0x200
1363 #define Rx_over 0x01
1364 #define Xoff_state 0x02
1365 #define Tx_flowOff 0x04
1366 #define Tx_enable 0x08
1367 #define CTS_state 0x10
1368 #define DSR_state 0x20
1369 #define DCD_state 0x80
1373 #define CTS_FlowCtl 1
1374 #define RTS_FlowCtl 2
1375 #define Tx_FlowCtl 4
1376 #define Rx_FlowCtl 8
1377 #define IXM_IXANY 0x10
1379 #define LowWater 128
1387 /* mode definition */
1393 #define MX_STOP1 0x00
1394 #define MX_STOP15 0x04
1395 #define MX_STOP2 0x08
1397 #define MX_PARNONE 0x00
1398 #define MX_PAREVEN 0x40
1399 #define MX_PARODD 0xC0
1404 #define QueryPort MAX_PORTS
1410 int rxcnt[MAX_PORTS];
1411 int txcnt[MAX_PORTS];
1413 typedef struct mon_str mon_st;
1415 #define DCD_changed 0x01
1416 #define DCD_oldstate 0x80
1418 static unsigned char moxaBuff[10240];
1419 static void __iomem *moxaIntNdx[MAX_BOARDS];
1420 static void __iomem *moxaIntPend[MAX_BOARDS];
1421 static void __iomem *moxaIntTable[MAX_BOARDS];
1422 static char moxaChkPort[MAX_PORTS];
1423 static char moxaLineCtrl[MAX_PORTS];
1424 static void __iomem *moxaTableAddr[MAX_PORTS];
1425 static long moxaCurBaud[MAX_PORTS];
1426 static char moxaDCDState[MAX_PORTS];
1427 static char moxaLowChkFlag[MAX_PORTS];
1428 static int moxaLowWaterChk;
1429 static int moxaCard;
1430 static mon_st moxaLog;
1431 static int moxaFuncTout = HZ / 2;
1432 static ushort moxaBreakCnt[MAX_PORTS];
1434 static void moxadelay(int);
1435 static void moxafunc(void __iomem *, int, ushort);
1436 static void wait_finish(void __iomem *);
1437 static void low_water_check(void __iomem *);
1438 static int moxaloadbios(int, unsigned char __user *, int);
1439 static int moxafindcard(int);
1440 static int moxaload320b(int, unsigned char __user *, int);
1441 static int moxaloadcode(int, unsigned char __user *, int);
1442 static int moxaloadc218(int, void __iomem *, int);
1443 static int moxaloadc320(int, void __iomem *, int, int *);
1445 /*****************************************************************************
1446 * Driver level functions: *
1447 * 1. MoxaDriverInit(void); *
1448 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1449 * 3. MoxaDriverPoll(void); *
1450 *****************************************************************************/
1451 void MoxaDriverInit(void)
1455 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1458 moxaLowWaterChk = 0;
1459 for (i = 0; i < MAX_PORTS; i++) {
1461 moxaLowChkFlag[i] = 0;
1462 moxaLineCtrl[i] = 0;
1463 moxaLog.rxcnt[i] = 0;
1464 moxaLog.txcnt[i] = 0;
1469 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1470 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1471 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1472 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1473 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1474 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1475 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1476 #define MOXA_GETDATACOUNT (MOXA + 23)
1477 #define MOXA_GET_IOQUEUE (MOXA + 27)
1478 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1479 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1480 #define MOXA_GET_MAJOR (MOXA + 63)
1481 #define MOXA_GET_CUMAJOR (MOXA + 64)
1482 #define MOXA_GETMSTATUS (MOXA + 65)
1496 static struct moxaq_str temp_queue[MAX_PORTS];
1497 static struct dl_str dltmp;
1499 void MoxaPortFlushData(int port, int mode)
1501 void __iomem *ofsAddr;
1502 if ((mode < 0) || (mode > 2))
1504 ofsAddr = moxaTableAddr[port];
1505 moxafunc(ofsAddr, FC_FlushQueue, mode);
1507 moxaLowChkFlag[port] = 0;
1508 low_water_check(ofsAddr);
1512 int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1516 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1517 void __user *argp = (void __user *)arg;
1519 if (port == QueryPort) {
1520 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1521 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1522 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1523 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1524 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1529 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS * sizeof(moxa_board_conf)))
1532 case MOXA_INIT_DRIVER:
1533 if ((int) arg == 0x404)
1536 case MOXA_GETDATACOUNT:
1537 moxaLog.tick = jiffies;
1538 if(copy_to_user(argp, &moxaLog, sizeof(mon_st)))
1541 case MOXA_FLUSH_QUEUE:
1542 MoxaPortFlushData(port, arg);
1544 case MOXA_GET_IOQUEUE:
1545 for (i = 0; i < MAX_PORTS; i++) {
1546 if (moxaChkPort[i]) {
1547 temp_queue[i].inq = MoxaPortRxQueue(i);
1548 temp_queue[i].outq = MoxaPortTxQueue(i);
1551 if(copy_to_user(argp, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
1554 case MOXA_GET_OQUEUE:
1555 i = MoxaPortTxQueue(port);
1556 return put_user(i, (unsigned long __user *)argp);
1557 case MOXA_GET_IQUEUE:
1558 i = MoxaPortRxQueue(port);
1559 return put_user(i, (unsigned long __user *)argp);
1560 case MOXA_GET_MAJOR:
1561 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1564 case MOXA_GET_CUMAJOR:
1566 if(copy_to_user(argp, &i, sizeof(int)))
1569 case MOXA_GETMSTATUS:
1570 for (i = 0; i < MAX_PORTS; i++) {
1572 GMStatus[i].dcd = 0;
1573 GMStatus[i].dsr = 0;
1574 GMStatus[i].cts = 0;
1575 if (!moxaChkPort[i]) {
1578 status = MoxaPortLineStatus(moxaChannels[i].port);
1580 GMStatus[i].cts = 1;
1582 GMStatus[i].dsr = 1;
1584 GMStatus[i].dcd = 1;
1587 if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
1588 GMStatus[i].cflag = moxaChannels[i].cflag;
1590 GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
1592 if(copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
1596 return (-ENOIOCTLCMD);
1597 case MOXA_LOAD_BIOS:
1598 case MOXA_FIND_BOARD:
1599 case MOXA_LOAD_C320B:
1600 case MOXA_LOAD_CODE:
1601 if (!capable(CAP_SYS_RAWIO))
1606 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1608 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
1613 case MOXA_LOAD_BIOS:
1614 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1616 case MOXA_FIND_BOARD:
1617 return moxafindcard(dltmp.cardno);
1618 case MOXA_LOAD_C320B:
1619 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1620 default: /* to keep gcc happy */
1622 case MOXA_LOAD_CODE:
1623 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1631 int MoxaDriverPoll(void)
1633 register ushort temp;
1635 void __iomem *ofsAddr;
1641 for (card = 0; card < MAX_BOARDS; card++) {
1642 if (loadstat[card] == 0)
1644 if ((ports = moxa_boards[card].numPorts) == 0)
1646 if (readb(moxaIntPend[card]) == 0xff) {
1647 ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
1648 p = card * MAX_PORTS_PER_BOARD;
1650 for (port = 0; port < ports; port += 2, p++) {
1651 if ((temp = readw(ip + port)) != 0) {
1652 writew(0, ip + port);
1653 ofsAddr = moxaTableAddr[p];
1655 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1656 if (temp & IntrBreak) {
1659 if (temp & IntrLine) {
1660 if (readb(ofsAddr + FlagStat) & DCD_state) {
1661 if ((moxaDCDState[p] & DCD_oldstate) == 0)
1662 moxaDCDState[p] = (DCD_oldstate |
1665 if (moxaDCDState[p] & DCD_oldstate)
1666 moxaDCDState[p] = DCD_changed;
1671 writeb(0, moxaIntPend[card]);
1673 if (moxaLowWaterChk) {
1674 p = card * MAX_PORTS_PER_BOARD;
1675 for (port = 0; port < ports; port++, p++) {
1676 if (moxaLowChkFlag[p]) {
1677 moxaLowChkFlag[p] = 0;
1678 ofsAddr = moxaTableAddr[p];
1679 low_water_check(ofsAddr);
1684 moxaLowWaterChk = 0;
1688 /*****************************************************************************
1689 * Card level function: *
1690 * 1. MoxaPortsOfCard(int cardno); *
1691 *****************************************************************************/
1692 int MoxaPortsOfCard(int cardno)
1695 if (moxa_boards[cardno].boardType == 0)
1697 return (moxa_boards[cardno].numPorts);
1700 /*****************************************************************************
1701 * Port level functions: *
1702 * 1. MoxaPortIsValid(int port); *
1703 * 2. MoxaPortEnable(int port); *
1704 * 3. MoxaPortDisable(int port); *
1705 * 4. MoxaPortGetMaxBaud(int port); *
1706 * 5. MoxaPortGetCurBaud(int port); *
1707 * 6. MoxaPortSetBaud(int port, long baud); *
1708 * 7. MoxaPortSetMode(int port, int databit, int stopbit, int parity); *
1709 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1710 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1711 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1712 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1713 * 12. MoxaPortLineStatus(int port); *
1714 * 13. MoxaPortDCDChange(int port); *
1715 * 14. MoxaPortDCDON(int port); *
1716 * 15. MoxaPortFlushData(int port, int mode); *
1717 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1718 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1719 * 18. MoxaPortTxBufSize(int port); *
1720 * 19. MoxaPortRxBufSize(int port); *
1721 * 20. MoxaPortTxQueue(int port); *
1722 * 21. MoxaPortTxFree(int port); *
1723 * 22. MoxaPortRxQueue(int port); *
1724 * 23. MoxaPortRxFree(int port); *
1725 * 24. MoxaPortTxDisable(int port); *
1726 * 25. MoxaPortTxEnable(int port); *
1727 * 26. MoxaPortGetBrkCnt(int port); *
1728 * 27. MoxaPortResetBrkCnt(int port); *
1729 * 28. MoxaPortSetXonXoff(int port, int xonValue, int xoffValue); *
1730 * 29. MoxaPortIsTxHold(int port); *
1731 * 30. MoxaPortSendBreak(int port, int ticks); *
1732 *****************************************************************************/
1734 * Moxa Port Number Description:
1736 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1737 * the port number using in MOXA driver functions will be 0 to 31 for
1738 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1739 * to 127 for fourth. For example, if you setup three MOXA boards,
1740 * first board is C218, second board is C320-16 and third board is
1741 * C320-32. The port number of first board (C218 - 8 ports) is from
1742 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1743 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1744 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1745 * 127 will be invalid.
1748 * Moxa Functions Description:
1750 * Function 1: Driver initialization routine, this routine must be
1751 * called when initialized driver.
1753 * void MoxaDriverInit();
1756 * Function 2: Moxa driver private IOCTL command processing.
1758 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1760 * unsigned int cmd : IOCTL command
1761 * unsigned long arg : IOCTL argument
1762 * int port : port number (0 - 127)
1769 * Function 3: Moxa driver polling process routine.
1771 * int MoxaDriverPoll(void);
1773 * return: 0 ; polling O.K.
1774 * -1 : no any Moxa card.
1777 * Function 4: Get the ports of this card.
1779 * int MoxaPortsOfCard(int cardno);
1781 * int cardno : card number (0 - 3)
1783 * return: 0 : this card is invalid
1787 * Function 5: Check this port is valid or invalid
1789 * int MoxaPortIsValid(int port);
1790 * int port : port number (0 - 127, ref port description)
1792 * return: 0 : this port is invalid
1793 * 1 : this port is valid
1796 * Function 6: Enable this port to start Tx/Rx data.
1798 * void MoxaPortEnable(int port);
1799 * int port : port number (0 - 127)
1802 * Function 7: Disable this port
1804 * void MoxaPortDisable(int port);
1805 * int port : port number (0 - 127)
1808 * Function 8: Get the maximun available baud rate of this port.
1810 * long MoxaPortGetMaxBaud(int port);
1811 * int port : port number (0 - 127)
1813 * return: 0 : this port is invalid
1814 * 38400/57600/115200 bps
1817 * Function 9: Get the current baud rate of this port.
1819 * long MoxaPortGetCurBaud(int port);
1820 * int port : port number (0 - 127)
1822 * return: 0 : this port is invalid
1826 * Function 10: Setting baud rate of this port.
1828 * long MoxaPortSetBaud(int port, long baud);
1829 * int port : port number (0 - 127)
1830 * long baud : baud rate (50 - 115200)
1832 * return: 0 : this port is invalid or baud < 50
1833 * 50 - 115200 : the real baud rate set to the port, if
1834 * the argument baud is large than maximun
1835 * available baud rate, the real setting
1836 * baud rate will be the maximun baud rate.
1839 * Function 11: Setting the data-bits/stop-bits/parity of this port
1841 * int MoxaPortSetMode(int port, int databits, int stopbits, int parity);
1842 * int port : port number (0 - 127)
1843 * int databits : data bits (8/7/6/5)
1844 * int stopbits : stop bits (2/1/0, 0 show 1.5 stop bits)
1845 int parity : parity (0:None,1:Odd,2:Even,3:Mark,4:Space)
1847 * return: -1 : invalid parameter
1851 * Function 12: Configure the port.
1853 * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud);
1854 * int port : port number (0 - 127)
1855 * struct ktermios * termio : termio structure pointer
1856 * speed_t baud : baud rate
1858 * return: -1 : this port is invalid or termio == NULL
1862 * Function 13: Get the DTR/RTS state of this port.
1864 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1865 * int port : port number (0 - 127)
1866 * int * dtrState : pointer to INT to receive the current DTR
1867 * state. (if NULL, this function will not
1868 * write to this address)
1869 * int * rtsState : pointer to INT to receive the current RTS
1870 * state. (if NULL, this function will not
1871 * write to this address)
1873 * return: -1 : this port is invalid
1877 * Function 14: Setting the DTR/RTS output state of this port.
1879 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1880 * int port : port number (0 - 127)
1881 * int dtrState : DTR output state (0: off, 1: on)
1882 * int rtsState : RTS output state (0: off, 1: on)
1885 * Function 15: Setting the flow control of this port.
1887 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1888 * int txFlow,int xany);
1889 * int port : port number (0 - 127)
1890 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1891 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1892 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1893 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1894 * int xany : S/W XANY flow control (0: no, 1: yes)
1897 * Function 16: Get ths line status of this port
1899 * int MoxaPortLineStatus(int port);
1900 * int port : port number (0 - 127)
1902 * return: Bit 0 - CTS state (0: off, 1: on)
1903 * Bit 1 - DSR state (0: off, 1: on)
1904 * Bit 2 - DCD state (0: off, 1: on)
1907 * Function 17: Check the DCD state has changed since the last read
1910 * int MoxaPortDCDChange(int port);
1911 * int port : port number (0 - 127)
1913 * return: 0 : no changed
1914 * 1 : DCD has changed
1917 * Function 18: Check ths current DCD state is ON or not.
1919 * int MoxaPortDCDON(int port);
1920 * int port : port number (0 - 127)
1922 * return: 0 : DCD off
1926 * Function 19: Flush the Rx/Tx buffer data of this port.
1928 * void MoxaPortFlushData(int port, int mode);
1929 * int port : port number (0 - 127)
1931 * 0 : flush the Rx buffer
1932 * 1 : flush the Tx buffer
1933 * 2 : flush the Rx and Tx buffer
1936 * Function 20: Write data.
1938 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
1939 * int port : port number (0 - 127)
1940 * unsigned char * buffer : pointer to write data buffer.
1941 * int length : write data length
1943 * return: 0 - length : real write data length
1946 * Function 21: Read data.
1948 * int MoxaPortReadData(int port, struct tty_struct *tty);
1949 * int port : port number (0 - 127)
1950 * struct tty_struct *tty : tty for data
1952 * return: 0 - length : real read data length
1955 * Function 22: Get the Tx buffer size of this port
1957 * int MoxaPortTxBufSize(int port);
1958 * int port : port number (0 - 127)
1960 * return: .. : Tx buffer size
1963 * Function 23: Get the Rx buffer size of this port
1965 * int MoxaPortRxBufSize(int port);
1966 * int port : port number (0 - 127)
1968 * return: .. : Rx buffer size
1971 * Function 24: Get the Tx buffer current queued data bytes
1973 * int MoxaPortTxQueue(int port);
1974 * int port : port number (0 - 127)
1976 * return: .. : Tx buffer current queued data bytes
1979 * Function 25: Get the Tx buffer current free space
1981 * int MoxaPortTxFree(int port);
1982 * int port : port number (0 - 127)
1984 * return: .. : Tx buffer current free space
1987 * Function 26: Get the Rx buffer current queued data bytes
1989 * int MoxaPortRxQueue(int port);
1990 * int port : port number (0 - 127)
1992 * return: .. : Rx buffer current queued data bytes
1995 * Function 27: Get the Rx buffer current free space
1997 * int MoxaPortRxFree(int port);
1998 * int port : port number (0 - 127)
2000 * return: .. : Rx buffer current free space
2003 * Function 28: Disable port data transmission.
2005 * void MoxaPortTxDisable(int port);
2006 * int port : port number (0 - 127)
2009 * Function 29: Enable port data transmission.
2011 * void MoxaPortTxEnable(int port);
2012 * int port : port number (0 - 127)
2015 * Function 30: Get the received BREAK signal count.
2017 * int MoxaPortGetBrkCnt(int port);
2018 * int port : port number (0 - 127)
2020 * return: 0 - .. : BREAK signal count
2023 * Function 31: Get the received BREAK signal count and reset it.
2025 * int MoxaPortResetBrkCnt(int port);
2026 * int port : port number (0 - 127)
2028 * return: 0 - .. : BREAK signal count
2031 * Function 32: Set the S/W flow control new XON/XOFF value, default
2032 * XON is 0x11 & XOFF is 0x13.
2034 * void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue);
2035 * int port : port number (0 - 127)
2036 * int xonValue : new XON value (0 - 255)
2037 * int xoffValue : new XOFF value (0 - 255)
2040 * Function 33: Check this port's transmission is hold by remote site
2041 * because the flow control.
2043 * int MoxaPortIsTxHold(int port);
2044 * int port : port number (0 - 127)
2046 * return: 0 : normal
2047 * 1 : hold by remote site
2050 * Function 34: Send out a BREAK signal.
2052 * void MoxaPortSendBreak(int port, int ms100);
2053 * int port : port number (0 - 127)
2054 * int ms100 : break signal time interval.
2055 * unit: 100 mini-second. if ms100 == 0, it will
2056 * send out a about 250 ms BREAK signal.
2059 int MoxaPortIsValid(int port)
2064 if (moxaChkPort[port] == 0)
2069 void MoxaPortEnable(int port)
2071 void __iomem *ofsAddr;
2072 int MoxaPortLineStatus(int);
2073 short lowwater = 512;
2075 ofsAddr = moxaTableAddr[port];
2076 writew(lowwater, ofsAddr + Low_water);
2077 moxaBreakCnt[port] = 0;
2078 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2079 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2080 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
2082 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
2085 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
2086 moxafunc(ofsAddr, FC_FlushQueue, 2);
2088 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
2089 MoxaPortLineStatus(port);
2092 void MoxaPortDisable(int port)
2094 void __iomem *ofsAddr = moxaTableAddr[port];
2096 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
2097 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
2098 writew(0, ofsAddr + HostStat);
2099 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
2102 long MoxaPortGetMaxBaud(int port)
2104 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2105 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
2112 long MoxaPortSetBaud(int port, long baud)
2114 void __iomem *ofsAddr;
2118 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
2120 ofsAddr = moxaTableAddr[port];
2124 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2125 else if (max == 57600L)
2126 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2128 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2130 moxafunc(ofsAddr, FC_SetBaud, val);
2132 moxaCurBaud[port] = baud;
2136 int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud)
2138 void __iomem *ofsAddr;
2142 if (moxaChkPort[port] == 0 || termio == 0)
2144 ofsAddr = moxaTableAddr[port];
2145 cflag = termio->c_cflag; /* termio->c_cflag */
2147 mode = termio->c_cflag & CSIZE;
2150 else if (mode == CS6)
2152 else if (mode == CS7)
2154 else if (mode == CS8)
2157 if (termio->c_cflag & CSTOPB) {
2165 if (termio->c_cflag & PARENB) {
2166 if (termio->c_cflag & PARODD)
2173 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2175 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2176 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2177 if (baud >= 921600L)
2180 MoxaPortSetBaud(port, baud);
2182 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2183 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2184 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2185 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2186 wait_finish(ofsAddr);
2192 int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2195 if (!MoxaPortIsValid(port))
2198 if (moxaLineCtrl[port] & DTR_ON)
2204 if (moxaLineCtrl[port] & RTS_ON)
2212 void MoxaPortLineCtrl(int port, int dtr, int rts)
2214 void __iomem *ofsAddr;
2217 ofsAddr = moxaTableAddr[port];
2223 moxaLineCtrl[port] = mode;
2224 moxafunc(ofsAddr, FC_LineControl, mode);
2227 void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2229 void __iomem *ofsAddr;
2232 ofsAddr = moxaTableAddr[port];
2235 mode |= RTS_FlowCtl;
2237 mode |= CTS_FlowCtl;
2244 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2247 int MoxaPortLineStatus(int port)
2249 void __iomem *ofsAddr;
2252 ofsAddr = moxaTableAddr[port];
2253 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2254 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2255 moxafunc(ofsAddr, FC_LineStatus, 0);
2256 val = readw(ofsAddr + FuncArg);
2258 val = readw(ofsAddr + FlagStat) >> 4;
2263 if ((moxaDCDState[port] & DCD_oldstate) == 0)
2264 moxaDCDState[port] = (DCD_oldstate | DCD_changed);
2266 if (moxaDCDState[port] & DCD_oldstate)
2267 moxaDCDState[port] = DCD_changed;
2273 int MoxaPortDCDChange(int port)
2277 if (moxaChkPort[port] == 0)
2279 n = moxaDCDState[port];
2280 moxaDCDState[port] &= ~DCD_changed;
2285 int MoxaPortDCDON(int port)
2289 if (moxaChkPort[port] == 0)
2291 if (moxaDCDState[port] & DCD_oldstate)
2300 int MoxaDumpMem(int port, unsigned char * buffer, int len)
2303 unsigned long baseAddr,ofsAddr,ofs;
2305 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2306 ofs = baseAddr + DynPage_addr + pageofs;
2309 for (i = 0; i < len; i++)
2310 buffer[i] = readb(ofs+i);
2315 int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2320 ushort head, tx_mask, spage, epage;
2321 ushort pageno, pageofs, bufhead;
2322 void __iomem *baseAddr, *ofsAddr, *ofs;
2324 ofsAddr = moxaTableAddr[port];
2325 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2326 tx_mask = readw(ofsAddr + TX_mask);
2327 spage = readw(ofsAddr + Page_txb);
2328 epage = readw(ofsAddr + EndPage_txb);
2329 tail = readw(ofsAddr + TXwptr);
2330 head = readw(ofsAddr + TXrptr);
2331 c = (head > tail) ? (head - tail - 1)
2332 : (head - tail + tx_mask);
2335 moxaLog.txcnt[port] += c;
2337 if (spage == epage) {
2338 bufhead = readw(ofsAddr + Ofs_txb);
2339 writew(spage, baseAddr + Control_reg);
2342 len = head - tail - 1;
2344 len = tx_mask + 1 - tail;
2345 len = (c > len) ? len : c;
2346 ofs = baseAddr + DynPage_addr + bufhead + tail;
2347 for (i = 0; i < len; i++)
2348 writeb(*buffer++, ofs + i);
2349 tail = (tail + len) & tx_mask;
2352 writew(tail, ofsAddr + TXwptr);
2355 pageno = spage + (tail >> 13);
2356 pageofs = tail & Page_mask;
2358 cnt = Page_size - pageofs;
2362 writeb(pageno, baseAddr + Control_reg);
2363 ofs = baseAddr + DynPage_addr + pageofs;
2364 for (i = 0; i < cnt; i++)
2365 writeb(*buffer++, ofs + i);
2367 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2370 if (++pageno == epage)
2375 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2379 int MoxaPortReadData(int port, struct tty_struct *tty)
2381 register ushort head, pageofs;
2382 int i, count, cnt, len, total, remain;
2383 ushort tail, rx_mask, spage, epage;
2384 ushort pageno, bufhead;
2385 void __iomem *baseAddr, *ofsAddr, *ofs;
2387 ofsAddr = moxaTableAddr[port];
2388 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2389 head = readw(ofsAddr + RXrptr);
2390 tail = readw(ofsAddr + RXwptr);
2391 rx_mask = readw(ofsAddr + RX_mask);
2392 spage = readw(ofsAddr + Page_rxb);
2393 epage = readw(ofsAddr + EndPage_rxb);
2394 count = (tail >= head) ? (tail - head)
2395 : (tail - head + rx_mask + 1);
2400 remain = count - total;
2401 moxaLog.rxcnt[port] += total;
2403 if (spage == epage) {
2404 bufhead = readw(ofsAddr + Ofs_rxb);
2405 writew(spage, baseAddr + Control_reg);
2410 len = rx_mask + 1 - head;
2411 len = (count > len) ? len : count;
2412 ofs = baseAddr + DynPage_addr + bufhead + head;
2413 for (i = 0; i < len; i++)
2414 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2415 head = (head + len) & rx_mask;
2418 writew(head, ofsAddr + RXrptr);
2421 pageno = spage + (head >> 13);
2422 pageofs = head & Page_mask;
2424 cnt = Page_size - pageofs;
2428 writew(pageno, baseAddr + Control_reg);
2429 ofs = baseAddr + DynPage_addr + pageofs;
2430 for (i = 0; i < cnt; i++)
2431 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2433 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2436 if (++pageno == epage)
2441 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2442 moxaLowWaterChk = 1;
2443 moxaLowChkFlag[port] = 1;
2449 int MoxaPortTxQueue(int port)
2451 void __iomem *ofsAddr;
2452 ushort rptr, wptr, mask;
2455 ofsAddr = moxaTableAddr[port];
2456 rptr = readw(ofsAddr + TXrptr);
2457 wptr = readw(ofsAddr + TXwptr);
2458 mask = readw(ofsAddr + TX_mask);
2459 len = (wptr - rptr) & mask;
2463 int MoxaPortTxFree(int port)
2465 void __iomem *ofsAddr;
2466 ushort rptr, wptr, mask;
2469 ofsAddr = moxaTableAddr[port];
2470 rptr = readw(ofsAddr + TXrptr);
2471 wptr = readw(ofsAddr + TXwptr);
2472 mask = readw(ofsAddr + TX_mask);
2473 len = mask - ((wptr - rptr) & mask);
2477 int MoxaPortRxQueue(int port)
2479 void __iomem *ofsAddr;
2480 ushort rptr, wptr, mask;
2483 ofsAddr = moxaTableAddr[port];
2484 rptr = readw(ofsAddr + RXrptr);
2485 wptr = readw(ofsAddr + RXwptr);
2486 mask = readw(ofsAddr + RX_mask);
2487 len = (wptr - rptr) & mask;
2492 void MoxaPortTxDisable(int port)
2494 void __iomem *ofsAddr;
2496 ofsAddr = moxaTableAddr[port];
2497 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2500 void MoxaPortTxEnable(int port)
2502 void __iomem *ofsAddr;
2504 ofsAddr = moxaTableAddr[port];
2505 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2509 int MoxaPortResetBrkCnt(int port)
2512 cnt = moxaBreakCnt[port];
2513 moxaBreakCnt[port] = 0;
2518 void MoxaPortSendBreak(int port, int ms100)
2520 void __iomem *ofsAddr;
2522 ofsAddr = moxaTableAddr[port];
2524 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2525 moxadelay(ms100 * (HZ / 10));
2527 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2528 moxadelay(HZ / 4); /* 250 ms */
2530 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2533 static int moxa_get_serial_info(struct moxa_str *info,
2534 struct serial_struct __user *retinfo)
2536 struct serial_struct tmp;
2538 memset(&tmp, 0, sizeof(tmp));
2539 tmp.type = info->type;
2540 tmp.line = info->port;
2543 tmp.flags = info->asyncflags;
2544 tmp.baud_base = 921600;
2545 tmp.close_delay = info->close_delay;
2546 tmp.closing_wait = info->closing_wait;
2547 tmp.custom_divisor = 0;
2549 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2555 static int moxa_set_serial_info(struct moxa_str *info,
2556 struct serial_struct __user *new_info)
2558 struct serial_struct new_serial;
2560 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2563 if ((new_serial.irq != 0) ||
2564 (new_serial.port != 0) ||
2565 // (new_serial.type != info->type) ||
2566 (new_serial.custom_divisor != 0) ||
2567 (new_serial.baud_base != 921600))
2570 if (!capable(CAP_SYS_ADMIN)) {
2571 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2572 (info->asyncflags & ~ASYNC_USR_MASK)))
2575 info->close_delay = new_serial.close_delay * HZ / 100;
2576 info->closing_wait = new_serial.closing_wait * HZ / 100;
2579 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2580 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2582 if (new_serial.type == PORT_16550A) {
2583 MoxaSetFifo(info->port, 1);
2585 MoxaSetFifo(info->port, 0);
2588 info->type = new_serial.type;
2594 /*****************************************************************************
2595 * Static local functions: *
2596 *****************************************************************************/
2598 * moxadelay - delays a specified number ticks
2600 static void moxadelay(int tick)
2602 unsigned long st, et;
2606 while (time_before(jiffies, et));
2609 static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
2612 writew(arg, ofsAddr + FuncArg);
2613 writew(cmd, ofsAddr + FuncCode);
2614 wait_finish(ofsAddr);
2617 static void wait_finish(void __iomem *ofsAddr)
2622 while (readw(ofsAddr + FuncCode) != 0) {
2624 if ((j - i) > moxaFuncTout) {
2630 static void low_water_check(void __iomem *ofsAddr)
2633 ushort rptr, wptr, mask;
2635 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2636 rptr = readw(ofsAddr + RXrptr);
2637 wptr = readw(ofsAddr + RXwptr);
2638 mask = readw(ofsAddr + RX_mask);
2639 len = (wptr - rptr) & mask;
2640 if (len <= Low_water)
2641 moxafunc(ofsAddr, FC_SendXon, 0);
2645 static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2647 void __iomem *baseAddr;
2650 if(copy_from_user(moxaBuff, tmp, len))
2652 baseAddr = moxaBaseAddr[cardno];
2653 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2654 moxadelay(1); /* delay 10 ms */
2655 for (i = 0; i < 4096; i++)
2656 writeb(0, baseAddr + i); /* clear fix page */
2657 for (i = 0; i < len; i++)
2658 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2659 writeb(0, baseAddr + Control_reg); /* restart */
2663 static int moxafindcard(int cardno)
2665 void __iomem *baseAddr;
2668 baseAddr = moxaBaseAddr[cardno];
2669 switch (moxa_boards[cardno].boardType) {
2670 case MOXA_BOARD_C218_ISA:
2671 case MOXA_BOARD_C218_PCI:
2672 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2676 case MOXA_BOARD_CP204J:
2677 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2682 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2685 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2692 static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2694 void __iomem *baseAddr;
2697 if(len > sizeof(moxaBuff))
2699 if(copy_from_user(moxaBuff, tmp, len))
2701 baseAddr = moxaBaseAddr[cardno];
2702 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2703 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2704 for (i = 0; i < 7168; i++)
2705 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2706 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2707 for (i = 0; i < (len - 7168); i++)
2708 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2712 static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2714 void __iomem *baseAddr, *ofsAddr;
2715 int retval, port, i;
2717 if(copy_from_user(moxaBuff, tmp, len))
2719 baseAddr = moxaBaseAddr[cardno];
2720 switch (moxa_boards[cardno].boardType) {
2721 case MOXA_BOARD_C218_ISA:
2722 case MOXA_BOARD_C218_PCI:
2723 case MOXA_BOARD_CP204J:
2724 retval = moxaloadc218(cardno, baseAddr, len);
2727 port = cardno * MAX_PORTS_PER_BOARD;
2728 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2729 moxaChkPort[port] = 1;
2730 moxaCurBaud[port] = 9600L;
2731 moxaDCDState[port] = 0;
2732 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2733 ofsAddr = moxaTableAddr[port];
2734 writew(C218rx_mask, ofsAddr + RX_mask);
2735 writew(C218tx_mask, ofsAddr + TX_mask);
2736 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2737 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2739 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2740 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2745 retval = moxaloadc320(cardno, baseAddr, len,
2746 &moxa_boards[cardno].numPorts);
2749 port = cardno * MAX_PORTS_PER_BOARD;
2750 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2751 moxaChkPort[port] = 1;
2752 moxaCurBaud[port] = 9600L;
2753 moxaDCDState[port] = 0;
2754 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2755 ofsAddr = moxaTableAddr[port];
2756 if (moxa_boards[cardno].numPorts == 8) {
2757 writew(C320p8rx_mask, ofsAddr + RX_mask);
2758 writew(C320p8tx_mask, ofsAddr + TX_mask);
2759 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2760 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2761 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2762 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2764 } else if (moxa_boards[cardno].numPorts == 16) {
2765 writew(C320p16rx_mask, ofsAddr + RX_mask);
2766 writew(C320p16tx_mask, ofsAddr + TX_mask);
2767 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2768 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2769 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2770 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2772 } else if (moxa_boards[cardno].numPorts == 24) {
2773 writew(C320p24rx_mask, ofsAddr + RX_mask);
2774 writew(C320p24tx_mask, ofsAddr + TX_mask);
2775 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2776 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2777 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2778 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2779 } else if (moxa_boards[cardno].numPorts == 32) {
2780 writew(C320p32rx_mask, ofsAddr + RX_mask);
2781 writew(C320p32tx_mask, ofsAddr + TX_mask);
2782 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2783 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2784 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2785 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2786 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2791 loadstat[cardno] = 1;
2795 static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
2798 int i, j, len1, len2;
2799 ushort usum, *ptr, keycode;
2801 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2802 keycode = CP204J_KeyCode;
2804 keycode = C218_KeyCode;
2807 ptr = (ushort *) moxaBuff;
2808 for (i = 0; i < len1; i++)
2809 usum += le16_to_cpu(*(ptr + i));
2815 len2 = (len1 > 2048) ? 2048 : len1;
2817 for (i = 0; i < len2 << 1; i++)
2818 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2821 writew(len2, baseAddr + C218DLoad_len);
2822 writew(0, baseAddr + C218_key);
2823 for (i = 0; i < 100; i++) {
2824 if (readw(baseAddr + C218_key) == keycode)
2826 moxadelay(1); /* delay 10 ms */
2828 if (readw(baseAddr + C218_key) != keycode) {
2832 writew(0, baseAddr + C218DLoad_len);
2833 writew(usum, baseAddr + C218check_sum);
2834 writew(0, baseAddr + C218_key);
2835 for (i = 0; i < 100; i++) {
2836 if (readw(baseAddr + C218_key) == keycode)
2838 moxadelay(1); /* delay 10 ms */
2841 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2842 if (readb(baseAddr + C218chksum_ok) != 1) {
2845 writew(0, baseAddr + C218_key);
2846 for (i = 0; i < 100; i++) {
2847 if (readw(baseAddr + Magic_no) == Magic_code)
2849 moxadelay(1); /* delay 10 ms */
2851 if (readw(baseAddr + Magic_no) != Magic_code) {
2854 writew(1, baseAddr + Disable_IRQ);
2855 writew(0, baseAddr + Magic_no);
2856 for (i = 0; i < 100; i++) {
2857 if (readw(baseAddr + Magic_no) == Magic_code)
2859 moxadelay(1); /* delay 10 ms */
2861 if (readw(baseAddr + Magic_no) != Magic_code) {
2865 moxaIntNdx[cardno] = baseAddr + IRQindex;
2866 moxaIntPend[cardno] = baseAddr + IRQpending;
2867 moxaIntTable[cardno] = baseAddr + IRQtable;
2871 static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
2874 int i, j, wlen, len2, retry;
2879 uptr = (ushort *) moxaBuff;
2880 for (i = 0; i < wlen; i++)
2881 usum += le16_to_cpu(uptr[i]);
2892 for (i = 0; i < len2; i++)
2893 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
2896 writew(len2, baseAddr + C320DLoad_len);
2897 writew(0, baseAddr + C320_key);
2898 for (i = 0; i < 10; i++) {
2899 if (readw(baseAddr + C320_key) == C320_KeyCode)
2903 if (readw(baseAddr + C320_key) != C320_KeyCode)
2906 writew(0, baseAddr + C320DLoad_len);
2907 writew(usum, baseAddr + C320check_sum);
2908 writew(0, baseAddr + C320_key);
2909 for (i = 0; i < 10; i++) {
2910 if (readw(baseAddr + C320_key) == C320_KeyCode)
2915 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
2916 if (readb(baseAddr + C320chksum_ok) != 1)
2918 writew(0, baseAddr + C320_key);
2919 for (i = 0; i < 600; i++) {
2920 if (readw(baseAddr + Magic_no) == Magic_code)
2924 if (readw(baseAddr + Magic_no) != Magic_code)
2927 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
2928 writew(0x3800, baseAddr + TMS320_PORT1);
2929 writew(0x3900, baseAddr + TMS320_PORT2);
2930 writew(28499, baseAddr + TMS320_CLOCK);
2932 writew(0x3200, baseAddr + TMS320_PORT1);
2933 writew(0x3400, baseAddr + TMS320_PORT2);
2934 writew(19999, baseAddr + TMS320_CLOCK);
2936 writew(1, baseAddr + Disable_IRQ);
2937 writew(0, baseAddr + Magic_no);
2938 for (i = 0; i < 500; i++) {
2939 if (readw(baseAddr + Magic_no) == Magic_code)
2943 if (readw(baseAddr + Magic_no) != Magic_code)
2946 j = readw(baseAddr + Module_cnt);
2950 writew(j, baseAddr + Module_no);
2951 writew(0, baseAddr + Magic_no);
2952 for (i = 0; i < 600; i++) {
2953 if (readw(baseAddr + Magic_no) == Magic_code)
2957 if (readw(baseAddr + Magic_no) != Magic_code)
2960 moxaIntNdx[cardno] = baseAddr + IRQindex;
2961 moxaIntPend[cardno] = baseAddr + IRQpending;
2962 moxaIntTable[cardno] = baseAddr + IRQtable;
2967 long MoxaPortGetCurBaud(int port)
2970 if (moxaChkPort[port] == 0)
2972 return (moxaCurBaud[port]);
2976 static void MoxaSetFifo(int port, int enable)
2978 void __iomem *ofsAddr = moxaTableAddr[port];
2981 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
2982 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
2984 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
2985 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
2990 int MoxaPortSetMode(int port, int databits, int stopbits, int parity)
2992 void __iomem *ofsAddr;
3015 break; /* stop bits 1.5 */
3044 ofsAddr = moxaTableAddr[port];
3045 moxafunc(ofsAddr, FC_SetMode, val);
3049 int MoxaPortTxBufSize(int port)
3051 void __iomem *ofsAddr;
3054 ofsAddr = moxaTableAddr[port];
3055 size = readw(ofsAddr + TX_mask);
3059 int MoxaPortRxBufSize(int port)
3061 void __iomem *ofsAddr;
3064 ofsAddr = moxaTableAddr[port];
3065 size = readw(ofsAddr + RX_mask);
3069 int MoxaPortRxFree(int port)
3071 void __iomem *ofsAddr;
3072 ushort rptr, wptr, mask;
3075 ofsAddr = moxaTableAddr[port];
3076 rptr = readw(ofsAddr + RXrptr);
3077 wptr = readw(ofsAddr + RXwptr);
3078 mask = readw(ofsAddr + RX_mask);
3079 len = mask - ((wptr - rptr) & mask);
3082 int MoxaPortGetBrkCnt(int port)
3084 return (moxaBreakCnt[port]);
3087 void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue)
3089 void __iomem *ofsAddr;
3091 ofsAddr = moxaTableAddr[port];
3092 writew(xonValue, ofsAddr + FuncArg);
3093 writew(xoffValue, ofsAddr + FuncArg1);
3094 writew(FC_SetXonXoff, ofsAddr + FuncCode);
3095 wait_finish(ofsAddr);
3098 int MoxaPortIsTxHold(int port)
3100 void __iomem *ofsAddr;
3103 ofsAddr = moxaTableAddr[port];
3104 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
3105 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
3106 moxafunc(ofsAddr, FC_GetCCSR, 0);
3107 val = readw(ofsAddr + FuncArg);
3111 if (readw(ofsAddr + FlagStat) & Tx_flowOff)