1 /*****************************************************************************/
3 * moxa.c -- MOXA Intellio family multiport serial driver.
5 * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com.tw).
7 * This code is loosely based on the Linux serial driver, written by
8 * Linus Torvalds, Theodore T'so and others.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 * MOXA Intellio Series Driver
32 #include <linux/config.h>
33 #include <linux/module.h>
34 #include <linux/types.h>
36 #include <linux/ioport.h>
37 #include <linux/errno.h>
38 #include <linux/signal.h>
39 #include <linux/sched.h>
40 #include <linux/timer.h>
41 #include <linux/interrupt.h>
42 #include <linux/tty.h>
43 #include <linux/tty_flip.h>
44 #include <linux/major.h>
45 #include <linux/string.h>
46 #include <linux/fcntl.h>
47 #include <linux/ptrace.h>
48 #include <linux/serial.h>
49 #include <linux/tty_driver.h>
50 #include <linux/delay.h>
51 #include <linux/pci.h>
52 #include <linux/init.h>
53 #include <linux/bitops.h>
55 #include <asm/system.h>
57 #include <asm/uaccess.h>
59 #define MOXA_VERSION "5.1k"
62 #define MOXACUMAJOR 173
64 #define put_to_user(arg1, arg2) put_user(arg1, (unsigned long *)arg2)
65 #define get_from_user(arg1, arg2) get_user(arg1, (unsigned int *)arg2)
67 #define MAX_BOARDS 4 /* Don't change this value */
68 #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
69 #define MAX_PORTS 128 /* Don't change this value */
72 * Define the Moxa PCI vendor and device IDs.
74 #define MOXA_BUS_TYPE_ISA 0
75 #define MOXA_BUS_TYPE_PCI 1
77 #ifndef PCI_VENDOR_ID_MOXA
78 #define PCI_VENDOR_ID_MOXA 0x1393
80 #ifndef PCI_DEVICE_ID_CP204J
81 #define PCI_DEVICE_ID_CP204J 0x2040
83 #ifndef PCI_DEVICE_ID_C218
84 #define PCI_DEVICE_ID_C218 0x2180
86 #ifndef PCI_DEVICE_ID_C320
87 #define PCI_DEVICE_ID_C320 0x3200
91 MOXA_BOARD_C218_PCI = 1,
98 static char *moxa_brdname[] =
100 "C218 Turbo PCI series",
101 "C218 Turbo ISA series",
102 "C320 Turbo PCI series",
103 "C320 Turbo ISA series",
108 static struct pci_device_id moxa_pcibrds[] = {
109 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C218, PCI_ANY_ID, PCI_ANY_ID,
110 0, 0, MOXA_BOARD_C218_PCI },
111 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C320, PCI_ANY_ID, PCI_ANY_ID,
112 0, 0, MOXA_BOARD_C320_PCI },
113 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_CP204J, PCI_ANY_ID, PCI_ANY_ID,
114 0, 0, MOXA_BOARD_CP204J },
117 MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
118 #endif /* CONFIG_PCI */
120 typedef struct _moxa_isa_board_conf {
123 unsigned long baseAddr;
124 } moxa_isa_board_conf;
126 static moxa_isa_board_conf moxa_isa_boards[] =
128 /* {MOXA_BOARD_C218_ISA,8,0xDC000}, */
131 typedef struct _moxa_pci_devinfo {
136 typedef struct _moxa_board_conf {
139 unsigned long baseAddr;
141 moxa_pci_devinfo pciInfo;
144 static moxa_board_conf moxa_boards[MAX_BOARDS];
145 static void __iomem *moxaBaseAddr[MAX_BOARDS];
151 unsigned short closing_wait;
154 long event; /* long req'd for set_bit --RR */
156 unsigned long statusflags;
157 struct tty_struct *tty;
159 wait_queue_head_t open_wait;
160 wait_queue_head_t close_wait;
161 struct work_struct tqueue;
164 struct mxser_mstatus {
172 static struct mxser_mstatus GMStatus[MAX_PORTS];
175 #define TXSTOPPED 0x1
177 #define EMPTYWAIT 0x4
181 #define MOXA_EVENT_HANGUP 1
183 #define SERIAL_DO_RESTART
186 #define SERIAL_TYPE_NORMAL 1
188 #define WAKEUP_CHARS 256
190 #define PORTNO(x) ((x)->index)
192 static int verbose = 0;
193 static int ttymajor = MOXAMAJOR;
194 /* Variables for insmod */
196 static int baseaddr[] = {0, 0, 0, 0};
197 static int type[] = {0, 0, 0, 0};
198 static int numports[] = {0, 0, 0, 0};
201 MODULE_AUTHOR("William Chen");
202 MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
203 MODULE_LICENSE("GPL");
205 module_param_array(type, int, NULL, 0);
206 module_param_array(baseaddr, int, NULL, 0);
207 module_param_array(numports, int, NULL, 0);
209 module_param(ttymajor, int, 0);
210 module_param(verbose, bool, 0644);
212 static struct tty_driver *moxaDriver;
213 static struct moxa_str moxaChannels[MAX_PORTS];
214 static unsigned char *moxaXmitBuff;
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];
219 static struct semaphore moxaBuffSem;
224 static void do_moxa_softint(void *);
225 static int moxa_open(struct tty_struct *, struct file *);
226 static void moxa_close(struct tty_struct *, struct file *);
227 static int moxa_write(struct tty_struct *, const unsigned char *, int);
228 static int moxa_write_room(struct tty_struct *);
229 static void moxa_flush_buffer(struct tty_struct *);
230 static int moxa_chars_in_buffer(struct tty_struct *);
231 static void moxa_flush_chars(struct tty_struct *);
232 static void moxa_put_char(struct tty_struct *, unsigned char);
233 static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
234 static void moxa_throttle(struct tty_struct *);
235 static void moxa_unthrottle(struct tty_struct *);
236 static void moxa_set_termios(struct tty_struct *, struct termios *);
237 static void moxa_stop(struct tty_struct *);
238 static void moxa_start(struct tty_struct *);
239 static void moxa_hangup(struct tty_struct *);
240 static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
241 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
242 unsigned int set, unsigned int clear);
243 static void moxa_poll(unsigned long);
244 static void set_tty_param(struct tty_struct *);
245 static int block_till_ready(struct tty_struct *, struct file *,
247 static void setup_empty_event(struct tty_struct *);
248 static void check_xmit_empty(unsigned long);
249 static void shut_down(struct moxa_str *);
250 static void receive_data(struct moxa_str *);
252 * moxa board interface functions:
254 static void MoxaDriverInit(void);
255 static int MoxaDriverIoctl(unsigned int, unsigned long, int);
256 static int MoxaDriverPoll(void);
257 static int MoxaPortsOfCard(int);
258 static int MoxaPortIsValid(int);
259 static void MoxaPortEnable(int);
260 static void MoxaPortDisable(int);
261 static long MoxaPortGetMaxBaud(int);
262 static long MoxaPortSetBaud(int, long);
263 static int MoxaPortSetTermio(int, struct termios *);
264 static int MoxaPortGetLineOut(int, int *, int *);
265 static void MoxaPortLineCtrl(int, int, int);
266 static void MoxaPortFlowCtrl(int, int, int, int, int, int);
267 static int MoxaPortLineStatus(int);
268 static int MoxaPortDCDChange(int);
269 static int MoxaPortDCDON(int);
270 static void MoxaPortFlushData(int, int);
271 static int MoxaPortWriteData(int, unsigned char *, int);
272 static int MoxaPortReadData(int, struct tty_struct *tty);
273 static int MoxaPortTxQueue(int);
274 static int MoxaPortRxQueue(int);
275 static int MoxaPortTxFree(int);
276 static void MoxaPortTxDisable(int);
277 static void MoxaPortTxEnable(int);
278 static int MoxaPortResetBrkCnt(int);
279 static void MoxaPortSendBreak(int, int);
280 static int moxa_get_serial_info(struct moxa_str *, struct serial_struct __user *);
281 static int moxa_set_serial_info(struct moxa_str *, struct serial_struct __user *);
282 static void MoxaSetFifo(int port, int enable);
284 static struct tty_operations moxa_ops = {
288 .write_room = moxa_write_room,
289 .flush_buffer = moxa_flush_buffer,
290 .chars_in_buffer = moxa_chars_in_buffer,
291 .flush_chars = moxa_flush_chars,
292 .put_char = moxa_put_char,
294 .throttle = moxa_throttle,
295 .unthrottle = moxa_unthrottle,
296 .set_termios = moxa_set_termios,
299 .hangup = moxa_hangup,
300 .tiocmget = moxa_tiocmget,
301 .tiocmset = moxa_tiocmset,
304 static spinlock_t moxa_lock = SPIN_LOCK_UNLOCKED;
307 static int moxa_get_PCI_conf(struct pci_dev *p, int board_type, moxa_board_conf * board)
309 board->baseAddr = pci_resource_start (p, 2);
310 board->boardType = board_type;
311 switch (board_type) {
312 case MOXA_BOARD_C218_ISA:
313 case MOXA_BOARD_C218_PCI:
317 case MOXA_BOARD_CP204J:
324 board->busType = MOXA_BUS_TYPE_PCI;
325 board->pciInfo.busNum = p->bus->number;
326 board->pciInfo.devNum = p->devfn >> 3;
330 #endif /* CONFIG_PCI */
332 static int __init moxa_init(void)
337 printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION);
338 moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
342 init_MUTEX(&moxaBuffSem);
343 moxaDriver->owner = THIS_MODULE;
344 moxaDriver->name = "ttyMX";
345 moxaDriver->devfs_name = "tts/a";
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->flags = TTY_DRIVER_REAL_RAW;
356 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, ch);
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);
501 module_init(moxa_init);
502 module_exit(moxa_exit);
504 static void do_moxa_softint(void *private_)
506 struct moxa_str *ch = (struct moxa_str *) private_;
507 struct tty_struct *tty;
509 if (ch && (tty = ch->tty)) {
510 if (test_and_clear_bit(MOXA_EVENT_HANGUP, &ch->event)) {
511 tty_hangup(tty); /* FIXME: module removal race here - AKPM */
512 wake_up_interruptible(&ch->open_wait);
513 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
518 static int moxa_open(struct tty_struct *tty, struct file *filp)
526 if (port == MAX_PORTS) {
529 if (!MoxaPortIsValid(port)) {
530 tty->driver_data = NULL;
535 page = get_zeroed_page(GFP_KERNEL);
540 /* This test is guarded by the BuffSem so no longer needed
545 moxaXmitBuff = (unsigned char *) page;
549 ch = &moxaChannels[port];
551 tty->driver_data = ch;
553 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
556 MoxaPortLineCtrl(ch->port, 1, 1);
557 MoxaPortEnable(ch->port);
558 ch->asyncflags |= ASYNC_INITIALIZED;
560 retval = block_till_ready(tty, filp, ch);
562 moxa_unthrottle(tty);
564 if (ch->type == PORT_16550A) {
565 MoxaSetFifo(ch->port, 1);
567 MoxaSetFifo(ch->port, 0);
573 static void moxa_close(struct tty_struct *tty, struct file *filp)
579 if (port == MAX_PORTS) {
582 if (!MoxaPortIsValid(port)) {
583 #ifdef SERIAL_DEBUG_CLOSE
584 printk("Invalid portno in moxa_close\n");
586 tty->driver_data = NULL;
589 if (tty->driver_data == NULL) {
592 if (tty_hung_up_p(filp)) {
595 ch = (struct moxa_str *) tty->driver_data;
597 if ((tty->count == 1) && (ch->count != 1)) {
598 printk("moxa_close: bad serial port count; tty->count is 1, "
599 "ch->count is %d\n", ch->count);
602 if (--ch->count < 0) {
603 printk("moxa_close: bad serial port count, device=%s\n",
610 ch->asyncflags |= ASYNC_CLOSING;
612 ch->cflag = tty->termios->c_cflag;
613 if (ch->asyncflags & ASYNC_INITIALIZED) {
614 setup_empty_event(tty);
615 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
616 moxaEmptyTimer_on[ch->port] = 0;
617 del_timer(&moxaEmptyTimer[ch->port]);
620 MoxaPortFlushData(port, 2);
622 if (tty->driver->flush_buffer)
623 tty->driver->flush_buffer(tty);
624 tty_ldisc_flush(tty);
629 if (ch->blocked_open) {
630 if (ch->close_delay) {
631 msleep_interruptible(jiffies_to_msecs(ch->close_delay));
633 wake_up_interruptible(&ch->open_wait);
635 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
636 wake_up_interruptible(&ch->close_wait);
639 static int moxa_write(struct tty_struct *tty,
640 const unsigned char *buf, int count)
646 ch = (struct moxa_str *) tty->driver_data;
651 spin_lock_irqsave(&moxa_lock, flags);
652 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
653 spin_unlock_irqrestore(&moxa_lock, flags);
655 /*********************************************
656 if ( !(ch->statusflags & LOWWAIT) &&
657 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
658 ************************************************/
659 ch->statusflags |= LOWWAIT;
663 static int moxa_write_room(struct tty_struct *tty)
669 ch = (struct moxa_str *) tty->driver_data;
672 return (MoxaPortTxFree(ch->port));
675 static void moxa_flush_buffer(struct tty_struct *tty)
677 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
681 MoxaPortFlushData(ch->port, 1);
685 static int moxa_chars_in_buffer(struct tty_struct *tty)
688 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
691 * Sigh...I have to check if driver_data is NULL here, because
692 * if an open() fails, the TTY subsystem eventually calls
693 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
694 * routine. And since the open() failed, we return 0 here. TDJ
698 chars = MoxaPortTxQueue(ch->port);
701 * Make it possible to wakeup anything waiting for output
702 * in tty_ioctl.c, etc.
704 if (!(ch->statusflags & EMPTYWAIT))
705 setup_empty_event(tty);
710 static void moxa_flush_chars(struct tty_struct *tty)
713 * Don't think I need this, because this is called to empty the TX
714 * buffer for the 16450, 16550, etc.
718 static void moxa_put_char(struct tty_struct *tty, unsigned char c)
724 ch = (struct moxa_str *) tty->driver_data;
728 spin_lock_irqsave(&moxa_lock, flags);
730 MoxaPortWriteData(port, moxaXmitBuff, 1);
731 spin_unlock_irqrestore(&moxa_lock, flags);
732 /************************************************
733 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
734 *************************************************/
735 ch->statusflags |= LOWWAIT;
738 static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
740 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
742 int flag = 0, dtr, rts;
745 if ((port != MAX_PORTS) && (!ch))
748 MoxaPortGetLineOut(ch->port, &dtr, &rts);
753 dtr = MoxaPortLineStatus(ch->port);
763 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
764 unsigned int set, unsigned int clear)
766 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
771 if ((port != MAX_PORTS) && (!ch))
774 MoxaPortGetLineOut(ch->port, &dtr, &rts);
779 if (clear & TIOCM_RTS)
781 if (clear & TIOCM_DTR)
783 MoxaPortLineCtrl(ch->port, dtr, rts);
787 static int moxa_ioctl(struct tty_struct *tty, struct file *file,
788 unsigned int cmd, unsigned long arg)
790 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
792 void __user *argp = (void __user *)arg;
796 if ((port != MAX_PORTS) && (!ch))
800 case TCSBRK: /* SVID version: non-zero arg --> no break */
801 retval = tty_check_change(tty);
804 setup_empty_event(tty);
805 tty_wait_until_sent(tty, 0);
807 MoxaPortSendBreak(ch->port, 0);
809 case TCSBRKP: /* support for POSIX tcsendbreak() */
810 retval = tty_check_change(tty);
813 setup_empty_event(tty);
814 tty_wait_until_sent(tty, 0);
815 MoxaPortSendBreak(ch->port, arg);
818 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
820 if(get_user(retval, (unsigned long __user *) argp))
823 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
826 ch->asyncflags &= ~ASYNC_CHECK_CD;
828 ch->asyncflags |= ASYNC_CHECK_CD;
831 return moxa_get_serial_info(ch, argp);
834 return moxa_set_serial_info(ch, argp);
836 retval = MoxaDriverIoctl(cmd, arg, port);
841 static void moxa_throttle(struct tty_struct *tty)
843 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
845 ch->statusflags |= THROTTLE;
848 static void moxa_unthrottle(struct tty_struct *tty)
850 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
852 ch->statusflags &= ~THROTTLE;
855 static void moxa_set_termios(struct tty_struct *tty,
856 struct termios *old_termios)
858 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
863 if (!(old_termios->c_cflag & CLOCAL) &&
864 (tty->termios->c_cflag & CLOCAL))
865 wake_up_interruptible(&ch->open_wait);
868 static void moxa_stop(struct tty_struct *tty)
870 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
874 MoxaPortTxDisable(ch->port);
875 ch->statusflags |= TXSTOPPED;
879 static void moxa_start(struct tty_struct *tty)
881 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
886 if (!(ch->statusflags & TXSTOPPED))
889 MoxaPortTxEnable(ch->port);
890 ch->statusflags &= ~TXSTOPPED;
893 static void moxa_hangup(struct tty_struct *tty)
895 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
897 moxa_flush_buffer(tty);
901 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
903 wake_up_interruptible(&ch->open_wait);
906 static void moxa_poll(unsigned long ignored)
910 struct tty_struct *tp;
914 del_timer(&moxaTimer);
916 if (MoxaDriverPoll() < 0) {
917 moxaTimer.function = moxa_poll;
918 moxaTimer.expires = jiffies + (HZ / 50);
920 add_timer(&moxaTimer);
923 for (card = 0; card < MAX_BOARDS; card++) {
924 if ((ports = MoxaPortsOfCard(card)) <= 0)
926 ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
927 for (i = 0; i < ports; i++, ch++) {
928 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
930 if (!(ch->statusflags & THROTTLE) &&
931 (MoxaPortRxQueue(ch->port) > 0))
933 if ((tp = ch->tty) == 0)
935 if (ch->statusflags & LOWWAIT) {
936 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
938 ch->statusflags &= ~LOWWAIT;
943 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
944 tty_insert_flip_char(tp, 0, TTY_BREAK);
945 tty_schedule_flip(tp);
947 if (MoxaPortDCDChange(ch->port)) {
948 if (ch->asyncflags & ASYNC_CHECK_CD) {
949 if (MoxaPortDCDON(ch->port))
950 wake_up_interruptible(&ch->open_wait);
952 set_bit(MOXA_EVENT_HANGUP, &ch->event);
953 schedule_work(&ch->tqueue);
960 moxaTimer.function = moxa_poll;
961 moxaTimer.expires = jiffies + (HZ / 50);
963 add_timer(&moxaTimer);
966 /******************************************************************************/
968 static void set_tty_param(struct tty_struct *tty)
970 register struct termios *ts;
972 int rts, cts, txflow, rxflow, xany;
974 ch = (struct moxa_str *) tty->driver_data;
976 if (ts->c_cflag & CLOCAL)
977 ch->asyncflags &= ~ASYNC_CHECK_CD;
979 ch->asyncflags |= ASYNC_CHECK_CD;
980 rts = cts = txflow = rxflow = xany = 0;
981 if (ts->c_cflag & CRTSCTS)
983 if (ts->c_iflag & IXON)
985 if (ts->c_iflag & IXOFF)
987 if (ts->c_iflag & IXANY)
989 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
990 MoxaPortSetTermio(ch->port, ts);
993 static int block_till_ready(struct tty_struct *tty, struct file *filp,
996 DECLARE_WAITQUEUE(wait,current);
999 int do_clocal = C_CLOCAL(tty);
1002 * If the device is in the middle of being closed, then block
1003 * until it's done, and then try again.
1005 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
1006 if (ch->asyncflags & ASYNC_CLOSING)
1007 interruptible_sleep_on(&ch->close_wait);
1008 #ifdef SERIAL_DO_RESTART
1009 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1012 return (-ERESTARTSYS);
1018 * If non-blocking mode is set, then make the check up front
1021 if (filp->f_flags & O_NONBLOCK) {
1022 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1026 * Block waiting for the carrier detect and the line to become free
1029 add_wait_queue(&ch->open_wait, &wait);
1030 #ifdef SERIAL_DEBUG_OPEN
1031 printk("block_til_ready before block: ttys%d, count = %d\n",
1032 ch->line, ch->count);
1034 spin_lock_irqsave(&moxa_lock, flags);
1035 if (!tty_hung_up_p(filp))
1038 spin_unlock_irqrestore(&moxa_lock, flags);
1041 set_current_state(TASK_INTERRUPTIBLE);
1042 if (tty_hung_up_p(filp) ||
1043 !(ch->asyncflags & ASYNC_INITIALIZED)) {
1044 #ifdef SERIAL_DO_RESTART
1045 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1048 retval = -ERESTARTSYS;
1054 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
1055 MoxaPortDCDON(ch->port)))
1058 if (signal_pending(current)) {
1059 retval = -ERESTARTSYS;
1064 set_current_state(TASK_RUNNING);
1065 remove_wait_queue(&ch->open_wait, &wait);
1067 spin_lock_irqsave(&moxa_lock, flags);
1068 if (!tty_hung_up_p(filp))
1071 spin_unlock_irqrestore(&moxa_lock, flags);
1072 #ifdef SERIAL_DEBUG_OPEN
1073 printk("block_til_ready after blocking: ttys%d, count = %d\n",
1074 ch->line, ch->count);
1078 /* FIXME: review to see if we need to use set_bit on these */
1079 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1083 static void setup_empty_event(struct tty_struct *tty)
1085 struct moxa_str *ch = tty->driver_data;
1086 unsigned long flags;
1088 spin_lock_irqsave(&moxa_lock, flags);
1089 ch->statusflags |= EMPTYWAIT;
1090 moxaEmptyTimer_on[ch->port] = 0;
1091 del_timer(&moxaEmptyTimer[ch->port]);
1092 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1093 moxaEmptyTimer_on[ch->port] = 1;
1094 add_timer(&moxaEmptyTimer[ch->port]);
1095 spin_unlock_irqrestore(&moxa_lock, flags);
1098 static void check_xmit_empty(unsigned long data)
1100 struct moxa_str *ch;
1102 ch = (struct moxa_str *) data;
1103 moxaEmptyTimer_on[ch->port] = 0;
1104 del_timer(&moxaEmptyTimer[ch->port]);
1105 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1106 if (MoxaPortTxQueue(ch->port) == 0) {
1107 ch->statusflags &= ~EMPTYWAIT;
1108 tty_wakeup(ch->tty);
1111 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1112 moxaEmptyTimer_on[ch->port] = 1;
1113 add_timer(&moxaEmptyTimer[ch->port]);
1115 ch->statusflags &= ~EMPTYWAIT;
1118 static void shut_down(struct moxa_str *ch)
1120 struct tty_struct *tp;
1122 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1127 MoxaPortDisable(ch->port);
1130 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1132 if (tp->termios->c_cflag & HUPCL)
1133 MoxaPortLineCtrl(ch->port, 0, 0);
1135 ch->asyncflags &= ~ASYNC_INITIALIZED;
1138 static void receive_data(struct moxa_str *ch)
1140 struct tty_struct *tp;
1142 unsigned long flags;
1148 /**************************************************
1149 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1150 *****************************************************/
1152 MoxaPortFlushData(ch->port, 0);
1155 spin_lock_irqsave(&moxa_lock, flags);
1156 MoxaPortReadData(ch->port, tp);
1157 spin_unlock_irqrestore(&moxa_lock, flags);
1158 tty_schedule_flip(tp);
1161 #define Magic_code 0x404
1164 * System Configuration
1167 * for C218 BIOS initialization
1169 #define C218_ConfBase 0x800
1170 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1171 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1172 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1173 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1174 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1175 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1176 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1177 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1178 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1179 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1181 #define C218_LoadBuf 0x0F00
1182 #define C218_KeyCode 0x218
1183 #define CP204J_KeyCode 0x204
1186 * for C320 BIOS initialization
1188 #define C320_ConfBase 0x800
1189 #define C320_LoadBuf 0x0f00
1190 #define STS_init 0x05 /* for C320_status */
1192 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1193 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1194 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1195 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1196 #define C320check_sum C320_ConfBase + 8 /* WORD */
1197 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1198 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1199 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1201 #define C320_KeyCode 0x320
1203 #define FixPage_addr 0x0000 /* starting addr of static page */
1204 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1205 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1206 #define Control_reg 0x1ff0 /* select page and reset control */
1207 #define HW_reset 0x80
1212 #define FC_CardReset 0x80
1213 #define FC_ChannelReset 1 /* C320 firmware not supported */
1214 #define FC_EnableCH 2
1215 #define FC_DisableCH 3
1216 #define FC_SetParam 4
1217 #define FC_SetMode 5
1218 #define FC_SetRate 6
1219 #define FC_LineControl 7
1220 #define FC_LineStatus 8
1221 #define FC_XmitControl 9
1222 #define FC_FlushQueue 10
1223 #define FC_SendBreak 11
1224 #define FC_StopBreak 12
1225 #define FC_LoopbackON 13
1226 #define FC_LoopbackOFF 14
1227 #define FC_ClrIrqTable 15
1228 #define FC_SendXon 16
1229 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1230 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1231 #define FC_SetBreakIrq 19
1232 #define FC_SetLineIrq 20
1233 #define FC_SetFlowCtl 21
1234 #define FC_GenIrq 22
1235 #define FC_InCD180 23
1236 #define FC_OutCD180 24
1237 #define FC_InUARTreg 23
1238 #define FC_OutUARTreg 24
1239 #define FC_SetXonXoff 25
1240 #define FC_OutCD180CCR 26
1241 #define FC_ExtIQueue 27
1242 #define FC_ExtOQueue 28
1243 #define FC_ClrLineIrq 29
1244 #define FC_HWFlowCtl 30
1245 #define FC_GetClockRate 35
1246 #define FC_SetBaud 36
1247 #define FC_SetDataMode 41
1248 #define FC_GetCCSR 43
1249 #define FC_GetDataError 45
1250 #define FC_RxControl 50
1251 #define FC_ImmSend 51
1252 #define FC_SetXonState 52
1253 #define FC_SetXoffState 53
1254 #define FC_SetRxFIFOTrig 54
1255 #define FC_SetTxFIFOCnt 55
1256 #define FC_UnixRate 56
1257 #define FC_UnixResetTimer 57
1259 #define RxFIFOTrig1 0
1260 #define RxFIFOTrig4 1
1261 #define RxFIFOTrig8 2
1262 #define RxFIFOTrig14 3
1267 #define DRAM_global 0
1268 #define INT_data (DRAM_global + 0)
1269 #define Config_base (DRAM_global + 0x108)
1271 #define IRQindex (INT_data + 0)
1272 #define IRQpending (INT_data + 4)
1273 #define IRQtable (INT_data + 8)
1278 #define IntrRx 0x01 /* receiver data O.K. */
1279 #define IntrTx 0x02 /* transmit buffer empty */
1280 #define IntrFunc 0x04 /* function complete */
1281 #define IntrBreak 0x08 /* received break */
1282 #define IntrLine 0x10 /* line status change
1284 #define IntrIntr 0x20 /* received INTR code */
1285 #define IntrQuit 0x40 /* received QUIT code */
1286 #define IntrEOF 0x80 /* received EOF code */
1288 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1289 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1291 #define Magic_no (Config_base + 0)
1292 #define Card_model_no (Config_base + 2)
1293 #define Total_ports (Config_base + 4)
1294 #define Module_cnt (Config_base + 8)
1295 #define Module_no (Config_base + 10)
1296 #define Timer_10ms (Config_base + 14)
1297 #define Disable_IRQ (Config_base + 20)
1298 #define TMS320_PORT1 (Config_base + 22)
1299 #define TMS320_PORT2 (Config_base + 24)
1300 #define TMS320_CLOCK (Config_base + 26)
1303 * DATA BUFFER in DRAM
1305 #define Extern_table 0x400 /* Base address of the external table
1306 (24 words * 64) total 3K bytes
1307 (24 words * 128) total 6K bytes */
1308 #define Extern_size 0x60 /* 96 bytes */
1309 #define RXrptr 0x00 /* read pointer for RX buffer */
1310 #define RXwptr 0x02 /* write pointer for RX buffer */
1311 #define TXrptr 0x04 /* read pointer for TX buffer */
1312 #define TXwptr 0x06 /* write pointer for TX buffer */
1313 #define HostStat 0x08 /* IRQ flag and general flag */
1314 #define FlagStat 0x0A
1315 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1316 /* x x x x | | | | */
1317 /* | | | + CTS flow */
1318 /* | | +--- RTS flow */
1319 /* | +------ TX Xon/Xoff */
1320 /* +--------- RX Xon/Xoff */
1321 #define Break_cnt 0x0E /* received break count */
1322 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1323 #define RX_mask 0x12
1324 #define TX_mask 0x14
1325 #define Ofs_rxb 0x16
1326 #define Ofs_txb 0x18
1327 #define Page_rxb 0x1A
1328 #define Page_txb 0x1C
1329 #define EndPage_rxb 0x1E
1330 #define EndPage_txb 0x20
1331 #define Data_error 0x22
1332 #define RxTrigger 0x28
1333 #define TxTrigger 0x2a
1335 #define rRXwptr 0x34
1336 #define Low_water 0x36
1338 #define FuncCode 0x40
1339 #define FuncArg 0x42
1340 #define FuncArg1 0x44
1342 #define C218rx_size 0x2000 /* 8K bytes */
1343 #define C218tx_size 0x8000 /* 32K bytes */
1345 #define C218rx_mask (C218rx_size - 1)
1346 #define C218tx_mask (C218tx_size - 1)
1348 #define C320p8rx_size 0x2000
1349 #define C320p8tx_size 0x8000
1350 #define C320p8rx_mask (C320p8rx_size - 1)
1351 #define C320p8tx_mask (C320p8tx_size - 1)
1353 #define C320p16rx_size 0x2000
1354 #define C320p16tx_size 0x4000
1355 #define C320p16rx_mask (C320p16rx_size - 1)
1356 #define C320p16tx_mask (C320p16tx_size - 1)
1358 #define C320p24rx_size 0x2000
1359 #define C320p24tx_size 0x2000
1360 #define C320p24rx_mask (C320p24rx_size - 1)
1361 #define C320p24tx_mask (C320p24tx_size - 1)
1363 #define C320p32rx_size 0x1000
1364 #define C320p32tx_size 0x1000
1365 #define C320p32rx_mask (C320p32rx_size - 1)
1366 #define C320p32tx_mask (C320p32tx_size - 1)
1368 #define Page_size 0x2000
1369 #define Page_mask (Page_size - 1)
1370 #define C218rx_spage 3
1371 #define C218tx_spage 4
1372 #define C218rx_pageno 1
1373 #define C218tx_pageno 4
1374 #define C218buf_pageno 5
1376 #define C320p8rx_spage 3
1377 #define C320p8tx_spage 4
1378 #define C320p8rx_pgno 1
1379 #define C320p8tx_pgno 4
1380 #define C320p8buf_pgno 5
1382 #define C320p16rx_spage 3
1383 #define C320p16tx_spage 4
1384 #define C320p16rx_pgno 1
1385 #define C320p16tx_pgno 2
1386 #define C320p16buf_pgno 3
1388 #define C320p24rx_spage 3
1389 #define C320p24tx_spage 4
1390 #define C320p24rx_pgno 1
1391 #define C320p24tx_pgno 1
1392 #define C320p24buf_pgno 2
1394 #define C320p32rx_spage 3
1395 #define C320p32tx_ofs C320p32rx_size
1396 #define C320p32tx_spage 3
1397 #define C320p32buf_pgno 1
1402 #define WakeupRx 0x01
1403 #define WakeupTx 0x02
1404 #define WakeupBreak 0x08
1405 #define WakeupLine 0x10
1406 #define WakeupIntr 0x20
1407 #define WakeupQuit 0x40
1408 #define WakeupEOF 0x80 /* used in VTIME control */
1409 #define WakeupRxTrigger 0x100
1410 #define WakeupTxTrigger 0x200
1414 #define Rx_over 0x01
1415 #define Xoff_state 0x02
1416 #define Tx_flowOff 0x04
1417 #define Tx_enable 0x08
1418 #define CTS_state 0x10
1419 #define DSR_state 0x20
1420 #define DCD_state 0x80
1424 #define CTS_FlowCtl 1
1425 #define RTS_FlowCtl 2
1426 #define Tx_FlowCtl 4
1427 #define Rx_FlowCtl 8
1428 #define IXM_IXANY 0x10
1430 #define LowWater 128
1438 /* mode definition */
1444 #define MX_STOP1 0x00
1445 #define MX_STOP15 0x04
1446 #define MX_STOP2 0x08
1448 #define MX_PARNONE 0x00
1449 #define MX_PAREVEN 0x40
1450 #define MX_PARODD 0xC0
1455 #define QueryPort MAX_PORTS
1461 int rxcnt[MAX_PORTS];
1462 int txcnt[MAX_PORTS];
1464 typedef struct mon_str mon_st;
1466 #define DCD_changed 0x01
1467 #define DCD_oldstate 0x80
1469 static unsigned char moxaBuff[10240];
1470 static void __iomem *moxaIntNdx[MAX_BOARDS];
1471 static void __iomem *moxaIntPend[MAX_BOARDS];
1472 static void __iomem *moxaIntTable[MAX_BOARDS];
1473 static char moxaChkPort[MAX_PORTS];
1474 static char moxaLineCtrl[MAX_PORTS];
1475 static void __iomem *moxaTableAddr[MAX_PORTS];
1476 static long moxaCurBaud[MAX_PORTS];
1477 static char moxaDCDState[MAX_PORTS];
1478 static char moxaLowChkFlag[MAX_PORTS];
1479 static int moxaLowWaterChk;
1480 static int moxaCard;
1481 static mon_st moxaLog;
1482 static int moxaFuncTout;
1483 static ushort moxaBreakCnt[MAX_PORTS];
1485 static void moxadelay(int);
1486 static void moxafunc(void __iomem *, int, ushort);
1487 static void wait_finish(void __iomem *);
1488 static void low_water_check(void __iomem *);
1489 static int moxaloadbios(int, unsigned char __user *, int);
1490 static int moxafindcard(int);
1491 static int moxaload320b(int, unsigned char __user *, int);
1492 static int moxaloadcode(int, unsigned char __user *, int);
1493 static int moxaloadc218(int, void __iomem *, int);
1494 static int moxaloadc320(int, void __iomem *, int, int *);
1496 /*****************************************************************************
1497 * Driver level functions: *
1498 * 1. MoxaDriverInit(void); *
1499 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1500 * 3. MoxaDriverPoll(void); *
1501 *****************************************************************************/
1502 void MoxaDriverInit(void)
1506 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1509 moxaLowWaterChk = 0;
1510 for (i = 0; i < MAX_PORTS; i++) {
1512 moxaLowChkFlag[i] = 0;
1513 moxaLineCtrl[i] = 0;
1514 moxaLog.rxcnt[i] = 0;
1515 moxaLog.txcnt[i] = 0;
1520 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1521 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1522 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1523 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1524 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1525 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1526 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1527 #define MOXA_GETDATACOUNT (MOXA + 23)
1528 #define MOXA_GET_IOQUEUE (MOXA + 27)
1529 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1530 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1531 #define MOXA_GET_MAJOR (MOXA + 63)
1532 #define MOXA_GET_CUMAJOR (MOXA + 64)
1533 #define MOXA_GETMSTATUS (MOXA + 65)
1547 static struct moxaq_str temp_queue[MAX_PORTS];
1548 static struct dl_str dltmp;
1550 void MoxaPortFlushData(int port, int mode)
1552 void __iomem *ofsAddr;
1553 if ((mode < 0) || (mode > 2))
1555 ofsAddr = moxaTableAddr[port];
1556 moxafunc(ofsAddr, FC_FlushQueue, mode);
1558 moxaLowChkFlag[port] = 0;
1559 low_water_check(ofsAddr);
1563 int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1567 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1568 void __user *argp = (void __user *)arg;
1570 if (port == QueryPort) {
1571 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1572 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1573 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1574 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1575 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1580 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS * sizeof(moxa_board_conf)))
1583 case MOXA_INIT_DRIVER:
1584 if ((int) arg == 0x404)
1587 case MOXA_GETDATACOUNT:
1588 moxaLog.tick = jiffies;
1589 if(copy_to_user(argp, &moxaLog, sizeof(mon_st)))
1592 case MOXA_FLUSH_QUEUE:
1593 MoxaPortFlushData(port, arg);
1595 case MOXA_GET_IOQUEUE:
1596 for (i = 0; i < MAX_PORTS; i++) {
1597 if (moxaChkPort[i]) {
1598 temp_queue[i].inq = MoxaPortRxQueue(i);
1599 temp_queue[i].outq = MoxaPortTxQueue(i);
1602 if(copy_to_user(argp, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
1605 case MOXA_GET_OQUEUE:
1606 i = MoxaPortTxQueue(port);
1607 return put_user(i, (unsigned long __user *)argp);
1608 case MOXA_GET_IQUEUE:
1609 i = MoxaPortRxQueue(port);
1610 return put_user(i, (unsigned long __user *)argp);
1611 case MOXA_GET_MAJOR:
1612 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1615 case MOXA_GET_CUMAJOR:
1617 if(copy_to_user(argp, &i, sizeof(int)))
1620 case MOXA_GETMSTATUS:
1621 for (i = 0; i < MAX_PORTS; i++) {
1623 GMStatus[i].dcd = 0;
1624 GMStatus[i].dsr = 0;
1625 GMStatus[i].cts = 0;
1626 if (!moxaChkPort[i]) {
1629 status = MoxaPortLineStatus(moxaChannels[i].port);
1631 GMStatus[i].cts = 1;
1633 GMStatus[i].dsr = 1;
1635 GMStatus[i].dcd = 1;
1638 if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
1639 GMStatus[i].cflag = moxaChannels[i].cflag;
1641 GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
1643 if(copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
1647 return (-ENOIOCTLCMD);
1648 case MOXA_LOAD_BIOS:
1649 case MOXA_FIND_BOARD:
1650 case MOXA_LOAD_C320B:
1651 case MOXA_LOAD_CODE:
1655 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1657 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
1662 case MOXA_LOAD_BIOS:
1663 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1665 case MOXA_FIND_BOARD:
1666 return moxafindcard(dltmp.cardno);
1667 case MOXA_LOAD_C320B:
1668 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1669 default: /* to keep gcc happy */
1671 case MOXA_LOAD_CODE:
1672 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1680 int MoxaDriverPoll(void)
1682 register ushort temp;
1684 void __iomem *ofsAddr;
1690 for (card = 0; card < MAX_BOARDS; card++) {
1691 if ((ports = moxa_boards[card].numPorts) == 0)
1693 if (readb(moxaIntPend[card]) == 0xff) {
1694 ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
1695 p = card * MAX_PORTS_PER_BOARD;
1697 for (port = 0; port < ports; port += 2, p++) {
1698 if ((temp = readw(ip + port)) != 0) {
1699 writew(0, ip + port);
1700 ofsAddr = moxaTableAddr[p];
1702 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1703 if (temp & IntrBreak) {
1706 if (temp & IntrLine) {
1707 if (readb(ofsAddr + FlagStat) & DCD_state) {
1708 if ((moxaDCDState[p] & DCD_oldstate) == 0)
1709 moxaDCDState[p] = (DCD_oldstate |
1712 if (moxaDCDState[p] & DCD_oldstate)
1713 moxaDCDState[p] = DCD_changed;
1718 writeb(0, moxaIntPend[card]);
1720 if (moxaLowWaterChk) {
1721 p = card * MAX_PORTS_PER_BOARD;
1722 for (port = 0; port < ports; port++, p++) {
1723 if (moxaLowChkFlag[p]) {
1724 moxaLowChkFlag[p] = 0;
1725 ofsAddr = moxaTableAddr[p];
1726 low_water_check(ofsAddr);
1731 moxaLowWaterChk = 0;
1735 /*****************************************************************************
1736 * Card level function: *
1737 * 1. MoxaPortsOfCard(int cardno); *
1738 *****************************************************************************/
1739 int MoxaPortsOfCard(int cardno)
1742 if (moxa_boards[cardno].boardType == 0)
1744 return (moxa_boards[cardno].numPorts);
1747 /*****************************************************************************
1748 * Port level functions: *
1749 * 1. MoxaPortIsValid(int port); *
1750 * 2. MoxaPortEnable(int port); *
1751 * 3. MoxaPortDisable(int port); *
1752 * 4. MoxaPortGetMaxBaud(int port); *
1753 * 5. MoxaPortGetCurBaud(int port); *
1754 * 6. MoxaPortSetBaud(int port, long baud); *
1755 * 7. MoxaPortSetMode(int port, int databit, int stopbit, int parity); *
1756 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1757 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1758 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1759 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1760 * 12. MoxaPortLineStatus(int port); *
1761 * 13. MoxaPortDCDChange(int port); *
1762 * 14. MoxaPortDCDON(int port); *
1763 * 15. MoxaPortFlushData(int port, int mode); *
1764 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1765 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1766 * 18. MoxaPortTxBufSize(int port); *
1767 * 19. MoxaPortRxBufSize(int port); *
1768 * 20. MoxaPortTxQueue(int port); *
1769 * 21. MoxaPortTxFree(int port); *
1770 * 22. MoxaPortRxQueue(int port); *
1771 * 23. MoxaPortRxFree(int port); *
1772 * 24. MoxaPortTxDisable(int port); *
1773 * 25. MoxaPortTxEnable(int port); *
1774 * 26. MoxaPortGetBrkCnt(int port); *
1775 * 27. MoxaPortResetBrkCnt(int port); *
1776 * 28. MoxaPortSetXonXoff(int port, int xonValue, int xoffValue); *
1777 * 29. MoxaPortIsTxHold(int port); *
1778 * 30. MoxaPortSendBreak(int port, int ticks); *
1779 *****************************************************************************/
1781 * Moxa Port Number Description:
1783 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1784 * the port number using in MOXA driver functions will be 0 to 31 for
1785 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1786 * to 127 for fourth. For example, if you setup three MOXA boards,
1787 * first board is C218, second board is C320-16 and third board is
1788 * C320-32. The port number of first board (C218 - 8 ports) is from
1789 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1790 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1791 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1792 * 127 will be invalid.
1795 * Moxa Functions Description:
1797 * Function 1: Driver initialization routine, this routine must be
1798 * called when initialized driver.
1800 * void MoxaDriverInit();
1803 * Function 2: Moxa driver private IOCTL command processing.
1805 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1807 * unsigned int cmd : IOCTL command
1808 * unsigned long arg : IOCTL argument
1809 * int port : port number (0 - 127)
1816 * Function 3: Moxa driver polling process routine.
1818 * int MoxaDriverPoll(void);
1820 * return: 0 ; polling O.K.
1821 * -1 : no any Moxa card.
1824 * Function 4: Get the ports of this card.
1826 * int MoxaPortsOfCard(int cardno);
1828 * int cardno : card number (0 - 3)
1830 * return: 0 : this card is invalid
1834 * Function 5: Check this port is valid or invalid
1836 * int MoxaPortIsValid(int port);
1837 * int port : port number (0 - 127, ref port description)
1839 * return: 0 : this port is invalid
1840 * 1 : this port is valid
1843 * Function 6: Enable this port to start Tx/Rx data.
1845 * void MoxaPortEnable(int port);
1846 * int port : port number (0 - 127)
1849 * Function 7: Disable this port
1851 * void MoxaPortDisable(int port);
1852 * int port : port number (0 - 127)
1855 * Function 8: Get the maximun available baud rate of this port.
1857 * long MoxaPortGetMaxBaud(int port);
1858 * int port : port number (0 - 127)
1860 * return: 0 : this port is invalid
1861 * 38400/57600/115200 bps
1864 * Function 9: Get the current baud rate of this port.
1866 * long MoxaPortGetCurBaud(int port);
1867 * int port : port number (0 - 127)
1869 * return: 0 : this port is invalid
1873 * Function 10: Setting baud rate of this port.
1875 * long MoxaPortSetBaud(int port, long baud);
1876 * int port : port number (0 - 127)
1877 * long baud : baud rate (50 - 115200)
1879 * return: 0 : this port is invalid or baud < 50
1880 * 50 - 115200 : the real baud rate set to the port, if
1881 * the argument baud is large than maximun
1882 * available baud rate, the real setting
1883 * baud rate will be the maximun baud rate.
1886 * Function 11: Setting the data-bits/stop-bits/parity of this port
1888 * int MoxaPortSetMode(int port, int databits, int stopbits, int parity);
1889 * int port : port number (0 - 127)
1890 * int databits : data bits (8/7/6/5)
1891 * int stopbits : stop bits (2/1/0, 0 show 1.5 stop bits)
1892 int parity : parity (0:None,1:Odd,2:Even,3:Mark,4:Space)
1894 * return: -1 : invalid parameter
1898 * Function 12: Configure the port.
1900 * int MoxaPortSetTermio(int port, struct termios *termio);
1901 * int port : port number (0 - 127)
1902 * struct termios * termio : termio structure pointer
1904 * return: -1 : this port is invalid or termio == NULL
1908 * Function 13: Get the DTR/RTS state of this port.
1910 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1911 * int port : port number (0 - 127)
1912 * int * dtrState : pointer to INT to receive the current DTR
1913 * state. (if NULL, this function will not
1914 * write to this address)
1915 * int * rtsState : pointer to INT to receive the current RTS
1916 * state. (if NULL, this function will not
1917 * write to this address)
1919 * return: -1 : this port is invalid
1923 * Function 14: Setting the DTR/RTS output state of this port.
1925 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1926 * int port : port number (0 - 127)
1927 * int dtrState : DTR output state (0: off, 1: on)
1928 * int rtsState : RTS output state (0: off, 1: on)
1931 * Function 15: Setting the flow control of this port.
1933 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1934 * int txFlow,int xany);
1935 * int port : port number (0 - 127)
1936 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1937 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1938 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1939 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1940 * int xany : S/W XANY flow control (0: no, 1: yes)
1943 * Function 16: Get ths line status of this port
1945 * int MoxaPortLineStatus(int port);
1946 * int port : port number (0 - 127)
1948 * return: Bit 0 - CTS state (0: off, 1: on)
1949 * Bit 1 - DSR state (0: off, 1: on)
1950 * Bit 2 - DCD state (0: off, 1: on)
1953 * Function 17: Check the DCD state has changed since the last read
1956 * int MoxaPortDCDChange(int port);
1957 * int port : port number (0 - 127)
1959 * return: 0 : no changed
1960 * 1 : DCD has changed
1963 * Function 18: Check ths current DCD state is ON or not.
1965 * int MoxaPortDCDON(int port);
1966 * int port : port number (0 - 127)
1968 * return: 0 : DCD off
1972 * Function 19: Flush the Rx/Tx buffer data of this port.
1974 * void MoxaPortFlushData(int port, int mode);
1975 * int port : port number (0 - 127)
1977 * 0 : flush the Rx buffer
1978 * 1 : flush the Tx buffer
1979 * 2 : flush the Rx and Tx buffer
1982 * Function 20: Write data.
1984 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
1985 * int port : port number (0 - 127)
1986 * unsigned char * buffer : pointer to write data buffer.
1987 * int length : write data length
1989 * return: 0 - length : real write data length
1992 * Function 21: Read data.
1994 * int MoxaPortReadData(int port, struct tty_struct *tty);
1995 * int port : port number (0 - 127)
1996 * struct tty_struct *tty : tty for data
1998 * return: 0 - length : real read data length
2001 * Function 22: Get the Tx buffer size of this port
2003 * int MoxaPortTxBufSize(int port);
2004 * int port : port number (0 - 127)
2006 * return: .. : Tx buffer size
2009 * Function 23: Get the Rx buffer size of this port
2011 * int MoxaPortRxBufSize(int port);
2012 * int port : port number (0 - 127)
2014 * return: .. : Rx buffer size
2017 * Function 24: Get the Tx buffer current queued data bytes
2019 * int MoxaPortTxQueue(int port);
2020 * int port : port number (0 - 127)
2022 * return: .. : Tx buffer current queued data bytes
2025 * Function 25: Get the Tx buffer current free space
2027 * int MoxaPortTxFree(int port);
2028 * int port : port number (0 - 127)
2030 * return: .. : Tx buffer current free space
2033 * Function 26: Get the Rx buffer current queued data bytes
2035 * int MoxaPortRxQueue(int port);
2036 * int port : port number (0 - 127)
2038 * return: .. : Rx buffer current queued data bytes
2041 * Function 27: Get the Rx buffer current free space
2043 * int MoxaPortRxFree(int port);
2044 * int port : port number (0 - 127)
2046 * return: .. : Rx buffer current free space
2049 * Function 28: Disable port data transmission.
2051 * void MoxaPortTxDisable(int port);
2052 * int port : port number (0 - 127)
2055 * Function 29: Enable port data transmission.
2057 * void MoxaPortTxEnable(int port);
2058 * int port : port number (0 - 127)
2061 * Function 30: Get the received BREAK signal count.
2063 * int MoxaPortGetBrkCnt(int port);
2064 * int port : port number (0 - 127)
2066 * return: 0 - .. : BREAK signal count
2069 * Function 31: Get the received BREAK signal count and reset it.
2071 * int MoxaPortResetBrkCnt(int port);
2072 * int port : port number (0 - 127)
2074 * return: 0 - .. : BREAK signal count
2077 * Function 32: Set the S/W flow control new XON/XOFF value, default
2078 * XON is 0x11 & XOFF is 0x13.
2080 * void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue);
2081 * int port : port number (0 - 127)
2082 * int xonValue : new XON value (0 - 255)
2083 * int xoffValue : new XOFF value (0 - 255)
2086 * Function 33: Check this port's transmission is hold by remote site
2087 * because the flow control.
2089 * int MoxaPortIsTxHold(int port);
2090 * int port : port number (0 - 127)
2092 * return: 0 : normal
2093 * 1 : hold by remote site
2096 * Function 34: Send out a BREAK signal.
2098 * void MoxaPortSendBreak(int port, int ms100);
2099 * int port : port number (0 - 127)
2100 * int ms100 : break signal time interval.
2101 * unit: 100 mini-second. if ms100 == 0, it will
2102 * send out a about 250 ms BREAK signal.
2105 int MoxaPortIsValid(int port)
2110 if (moxaChkPort[port] == 0)
2115 void MoxaPortEnable(int port)
2117 void __iomem *ofsAddr;
2118 int MoxaPortLineStatus(int);
2119 short lowwater = 512;
2121 ofsAddr = moxaTableAddr[port];
2122 writew(lowwater, ofsAddr + Low_water);
2123 moxaBreakCnt[port] = 0;
2124 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2125 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2126 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
2128 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
2131 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
2132 moxafunc(ofsAddr, FC_FlushQueue, 2);
2134 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
2135 MoxaPortLineStatus(port);
2138 void MoxaPortDisable(int port)
2140 void __iomem *ofsAddr = moxaTableAddr[port];
2142 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
2143 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
2144 writew(0, ofsAddr + HostStat);
2145 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
2148 long MoxaPortGetMaxBaud(int port)
2150 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2151 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
2158 long MoxaPortSetBaud(int port, long baud)
2160 void __iomem *ofsAddr;
2164 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
2166 ofsAddr = moxaTableAddr[port];
2170 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2171 else if (max == 57600L)
2172 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2174 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2176 moxafunc(ofsAddr, FC_SetBaud, val);
2178 moxaCurBaud[port] = baud;
2182 int MoxaPortSetTermio(int port, struct termios *termio)
2184 void __iomem *ofsAddr;
2189 if (moxaChkPort[port] == 0 || termio == 0)
2191 ofsAddr = moxaTableAddr[port];
2192 cflag = termio->c_cflag; /* termio->c_cflag */
2194 mode = termio->c_cflag & CSIZE;
2197 else if (mode == CS6)
2199 else if (mode == CS7)
2201 else if (mode == CS8)
2204 if (termio->c_cflag & CSTOPB) {
2212 if (termio->c_cflag & PARENB) {
2213 if (termio->c_cflag & PARODD)
2220 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2222 cflag &= (CBAUD | CBAUDEX);
2224 #define B921600 (B460800+1)
2290 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2291 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2292 if (baud == 921600L)
2295 MoxaPortSetBaud(port, baud);
2297 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2298 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2299 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2300 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2301 wait_finish(ofsAddr);
2307 int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2310 if (!MoxaPortIsValid(port))
2313 if (moxaLineCtrl[port] & DTR_ON)
2319 if (moxaLineCtrl[port] & RTS_ON)
2327 void MoxaPortLineCtrl(int port, int dtr, int rts)
2329 void __iomem *ofsAddr;
2332 ofsAddr = moxaTableAddr[port];
2338 moxaLineCtrl[port] = mode;
2339 moxafunc(ofsAddr, FC_LineControl, mode);
2342 void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2344 void __iomem *ofsAddr;
2347 ofsAddr = moxaTableAddr[port];
2350 mode |= RTS_FlowCtl;
2352 mode |= CTS_FlowCtl;
2359 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2362 int MoxaPortLineStatus(int port)
2364 void __iomem *ofsAddr;
2367 ofsAddr = moxaTableAddr[port];
2368 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2369 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2370 moxafunc(ofsAddr, FC_LineStatus, 0);
2371 val = readw(ofsAddr + FuncArg);
2373 val = readw(ofsAddr + FlagStat) >> 4;
2378 if ((moxaDCDState[port] & DCD_oldstate) == 0)
2379 moxaDCDState[port] = (DCD_oldstate | DCD_changed);
2381 if (moxaDCDState[port] & DCD_oldstate)
2382 moxaDCDState[port] = DCD_changed;
2388 int MoxaPortDCDChange(int port)
2392 if (moxaChkPort[port] == 0)
2394 n = moxaDCDState[port];
2395 moxaDCDState[port] &= ~DCD_changed;
2400 int MoxaPortDCDON(int port)
2404 if (moxaChkPort[port] == 0)
2406 if (moxaDCDState[port] & DCD_oldstate)
2415 int MoxaDumpMem(int port, unsigned char * buffer, int len)
2418 unsigned long baseAddr,ofsAddr,ofs;
2420 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2421 ofs = baseAddr + DynPage_addr + pageofs;
2424 for (i = 0; i < len; i++)
2425 buffer[i] = readb(ofs+i);
2430 int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2435 ushort head, tx_mask, spage, epage;
2436 ushort pageno, pageofs, bufhead;
2437 void __iomem *baseAddr, *ofsAddr, *ofs;
2439 ofsAddr = moxaTableAddr[port];
2440 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2441 tx_mask = readw(ofsAddr + TX_mask);
2442 spage = readw(ofsAddr + Page_txb);
2443 epage = readw(ofsAddr + EndPage_txb);
2444 tail = readw(ofsAddr + TXwptr);
2445 head = readw(ofsAddr + TXrptr);
2446 c = (head > tail) ? (head - tail - 1)
2447 : (head - tail + tx_mask);
2450 moxaLog.txcnt[port] += c;
2452 if (spage == epage) {
2453 bufhead = readw(ofsAddr + Ofs_txb);
2454 writew(spage, baseAddr + Control_reg);
2457 len = head - tail - 1;
2459 len = tx_mask + 1 - tail;
2460 len = (c > len) ? len : c;
2461 ofs = baseAddr + DynPage_addr + bufhead + tail;
2462 for (i = 0; i < len; i++)
2463 writeb(*buffer++, ofs + i);
2464 tail = (tail + len) & tx_mask;
2467 writew(tail, ofsAddr + TXwptr);
2470 pageno = spage + (tail >> 13);
2471 pageofs = tail & Page_mask;
2473 cnt = Page_size - pageofs;
2477 writeb(pageno, baseAddr + Control_reg);
2478 ofs = baseAddr + DynPage_addr + pageofs;
2479 for (i = 0; i < cnt; i++)
2480 writeb(*buffer++, ofs + i);
2482 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2485 if (++pageno == epage)
2490 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2494 int MoxaPortReadData(int port, struct tty_struct *tty)
2496 register ushort head, pageofs;
2497 int i, count, cnt, len, total, remain;
2498 ushort tail, rx_mask, spage, epage;
2499 ushort pageno, bufhead;
2500 void __iomem *baseAddr, *ofsAddr, *ofs;
2502 ofsAddr = moxaTableAddr[port];
2503 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2504 head = readw(ofsAddr + RXrptr);
2505 tail = readw(ofsAddr + RXwptr);
2506 rx_mask = readw(ofsAddr + RX_mask);
2507 spage = readw(ofsAddr + Page_rxb);
2508 epage = readw(ofsAddr + EndPage_rxb);
2509 count = (tail >= head) ? (tail - head)
2510 : (tail - head + rx_mask + 1);
2515 remain = count - total;
2516 moxaLog.rxcnt[port] += total;
2518 if (spage == epage) {
2519 bufhead = readw(ofsAddr + Ofs_rxb);
2520 writew(spage, baseAddr + Control_reg);
2525 len = rx_mask + 1 - head;
2526 len = (count > len) ? len : count;
2527 ofs = baseAddr + DynPage_addr + bufhead + head;
2528 for (i = 0; i < len; i++)
2529 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2530 head = (head + len) & rx_mask;
2533 writew(head, ofsAddr + RXrptr);
2536 pageno = spage + (head >> 13);
2537 pageofs = head & Page_mask;
2539 cnt = Page_size - pageofs;
2543 writew(pageno, baseAddr + Control_reg);
2544 ofs = baseAddr + DynPage_addr + pageofs;
2545 for (i = 0; i < cnt; i++)
2546 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2548 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2551 if (++pageno == epage)
2556 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2557 moxaLowWaterChk = 1;
2558 moxaLowChkFlag[port] = 1;
2564 int MoxaPortTxQueue(int port)
2566 void __iomem *ofsAddr;
2567 ushort rptr, wptr, mask;
2570 ofsAddr = moxaTableAddr[port];
2571 rptr = readw(ofsAddr + TXrptr);
2572 wptr = readw(ofsAddr + TXwptr);
2573 mask = readw(ofsAddr + TX_mask);
2574 len = (wptr - rptr) & mask;
2578 int MoxaPortTxFree(int port)
2580 void __iomem *ofsAddr;
2581 ushort rptr, wptr, mask;
2584 ofsAddr = moxaTableAddr[port];
2585 rptr = readw(ofsAddr + TXrptr);
2586 wptr = readw(ofsAddr + TXwptr);
2587 mask = readw(ofsAddr + TX_mask);
2588 len = mask - ((wptr - rptr) & mask);
2592 int MoxaPortRxQueue(int port)
2594 void __iomem *ofsAddr;
2595 ushort rptr, wptr, mask;
2598 ofsAddr = moxaTableAddr[port];
2599 rptr = readw(ofsAddr + RXrptr);
2600 wptr = readw(ofsAddr + RXwptr);
2601 mask = readw(ofsAddr + RX_mask);
2602 len = (wptr - rptr) & mask;
2607 void MoxaPortTxDisable(int port)
2609 void __iomem *ofsAddr;
2611 ofsAddr = moxaTableAddr[port];
2612 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2615 void MoxaPortTxEnable(int port)
2617 void __iomem *ofsAddr;
2619 ofsAddr = moxaTableAddr[port];
2620 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2624 int MoxaPortResetBrkCnt(int port)
2627 cnt = moxaBreakCnt[port];
2628 moxaBreakCnt[port] = 0;
2633 void MoxaPortSendBreak(int port, int ms100)
2635 void __iomem *ofsAddr;
2637 ofsAddr = moxaTableAddr[port];
2639 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2640 moxadelay(ms100 * (HZ / 10));
2642 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2643 moxadelay(HZ / 4); /* 250 ms */
2645 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2648 static int moxa_get_serial_info(struct moxa_str *info,
2649 struct serial_struct __user *retinfo)
2651 struct serial_struct tmp;
2653 memset(&tmp, 0, sizeof(tmp));
2654 tmp.type = info->type;
2655 tmp.line = info->port;
2658 tmp.flags = info->asyncflags;
2659 tmp.baud_base = 921600;
2660 tmp.close_delay = info->close_delay;
2661 tmp.closing_wait = info->closing_wait;
2662 tmp.custom_divisor = 0;
2664 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2670 static int moxa_set_serial_info(struct moxa_str *info,
2671 struct serial_struct __user *new_info)
2673 struct serial_struct new_serial;
2675 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2678 if ((new_serial.irq != 0) ||
2679 (new_serial.port != 0) ||
2680 // (new_serial.type != info->type) ||
2681 (new_serial.custom_divisor != 0) ||
2682 (new_serial.baud_base != 921600))
2685 if (!capable(CAP_SYS_ADMIN)) {
2686 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2687 (info->asyncflags & ~ASYNC_USR_MASK)))
2690 info->close_delay = new_serial.close_delay * HZ / 100;
2691 info->closing_wait = new_serial.closing_wait * HZ / 100;
2694 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2695 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2697 if (new_serial.type == PORT_16550A) {
2698 MoxaSetFifo(info->port, 1);
2700 MoxaSetFifo(info->port, 0);
2703 info->type = new_serial.type;
2709 /*****************************************************************************
2710 * Static local functions: *
2711 *****************************************************************************/
2713 * moxadelay - delays a specified number ticks
2715 static void moxadelay(int tick)
2717 unsigned long st, et;
2721 while (time_before(jiffies, et));
2724 static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
2727 writew(arg, ofsAddr + FuncArg);
2728 writew(cmd, ofsAddr + FuncCode);
2729 wait_finish(ofsAddr);
2732 static void wait_finish(void __iomem *ofsAddr)
2737 while (readw(ofsAddr + FuncCode) != 0) {
2739 if ((j - i) > moxaFuncTout) {
2745 static void low_water_check(void __iomem *ofsAddr)
2748 ushort rptr, wptr, mask;
2750 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2751 rptr = readw(ofsAddr + RXrptr);
2752 wptr = readw(ofsAddr + RXwptr);
2753 mask = readw(ofsAddr + RX_mask);
2754 len = (wptr - rptr) & mask;
2755 if (len <= Low_water)
2756 moxafunc(ofsAddr, FC_SendXon, 0);
2760 static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2762 void __iomem *baseAddr;
2765 if(copy_from_user(moxaBuff, tmp, len))
2767 baseAddr = moxaBaseAddr[cardno];
2768 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2769 moxadelay(1); /* delay 10 ms */
2770 for (i = 0; i < 4096; i++)
2771 writeb(0, baseAddr + i); /* clear fix page */
2772 for (i = 0; i < len; i++)
2773 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2774 writeb(0, baseAddr + Control_reg); /* restart */
2778 static int moxafindcard(int cardno)
2780 void __iomem *baseAddr;
2783 baseAddr = moxaBaseAddr[cardno];
2784 switch (moxa_boards[cardno].boardType) {
2785 case MOXA_BOARD_C218_ISA:
2786 case MOXA_BOARD_C218_PCI:
2787 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2791 case MOXA_BOARD_CP204J:
2792 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2797 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2800 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2807 static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2809 void __iomem *baseAddr;
2812 if(len > sizeof(moxaBuff))
2814 if(copy_from_user(moxaBuff, tmp, len))
2816 baseAddr = moxaBaseAddr[cardno];
2817 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2818 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2819 for (i = 0; i < 7168; i++)
2820 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2821 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2822 for (i = 0; i < (len - 7168); i++)
2823 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2827 static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2829 void __iomem *baseAddr, *ofsAddr;
2830 int retval, port, i;
2832 if(copy_from_user(moxaBuff, tmp, len))
2834 baseAddr = moxaBaseAddr[cardno];
2835 switch (moxa_boards[cardno].boardType) {
2836 case MOXA_BOARD_C218_ISA:
2837 case MOXA_BOARD_C218_PCI:
2838 case MOXA_BOARD_CP204J:
2839 retval = moxaloadc218(cardno, baseAddr, len);
2842 port = cardno * MAX_PORTS_PER_BOARD;
2843 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2844 moxaChkPort[port] = 1;
2845 moxaCurBaud[port] = 9600L;
2846 moxaDCDState[port] = 0;
2847 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2848 ofsAddr = moxaTableAddr[port];
2849 writew(C218rx_mask, ofsAddr + RX_mask);
2850 writew(C218tx_mask, ofsAddr + TX_mask);
2851 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2852 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2854 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2855 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2860 retval = moxaloadc320(cardno, baseAddr, len,
2861 &moxa_boards[cardno].numPorts);
2864 port = cardno * MAX_PORTS_PER_BOARD;
2865 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2866 moxaChkPort[port] = 1;
2867 moxaCurBaud[port] = 9600L;
2868 moxaDCDState[port] = 0;
2869 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2870 ofsAddr = moxaTableAddr[port];
2871 if (moxa_boards[cardno].numPorts == 8) {
2872 writew(C320p8rx_mask, ofsAddr + RX_mask);
2873 writew(C320p8tx_mask, ofsAddr + TX_mask);
2874 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2875 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2876 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2877 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2879 } else if (moxa_boards[cardno].numPorts == 16) {
2880 writew(C320p16rx_mask, ofsAddr + RX_mask);
2881 writew(C320p16tx_mask, ofsAddr + TX_mask);
2882 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2883 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2884 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2885 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2887 } else if (moxa_boards[cardno].numPorts == 24) {
2888 writew(C320p24rx_mask, ofsAddr + RX_mask);
2889 writew(C320p24tx_mask, ofsAddr + TX_mask);
2890 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2891 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2892 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2893 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2894 } else if (moxa_boards[cardno].numPorts == 32) {
2895 writew(C320p32rx_mask, ofsAddr + RX_mask);
2896 writew(C320p32tx_mask, ofsAddr + TX_mask);
2897 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2898 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2899 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2900 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2901 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2909 static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
2912 int i, j, len1, len2;
2913 ushort usum, *ptr, keycode;
2915 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2916 keycode = CP204J_KeyCode;
2918 keycode = C218_KeyCode;
2921 ptr = (ushort *) moxaBuff;
2922 for (i = 0; i < len1; i++)
2929 len2 = (len1 > 2048) ? 2048 : len1;
2931 for (i = 0; i < len2 << 1; i++)
2932 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2935 writew(len2, baseAddr + C218DLoad_len);
2936 writew(0, baseAddr + C218_key);
2937 for (i = 0; i < 100; i++) {
2938 if (readw(baseAddr + C218_key) == keycode)
2940 moxadelay(1); /* delay 10 ms */
2942 if (readw(baseAddr + C218_key) != keycode) {
2946 writew(0, baseAddr + C218DLoad_len);
2947 writew(usum, baseAddr + C218check_sum);
2948 writew(0, baseAddr + C218_key);
2949 for (i = 0; i < 100; i++) {
2950 if (readw(baseAddr + C218_key) == keycode)
2952 moxadelay(1); /* delay 10 ms */
2955 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2956 if (readb(baseAddr + C218chksum_ok) != 1) {
2959 writew(0, baseAddr + C218_key);
2960 for (i = 0; i < 100; i++) {
2961 if (readw(baseAddr + Magic_no) == Magic_code)
2963 moxadelay(1); /* delay 10 ms */
2965 if (readw(baseAddr + Magic_no) != Magic_code) {
2968 writew(1, baseAddr + Disable_IRQ);
2969 writew(0, baseAddr + Magic_no);
2970 for (i = 0; i < 100; i++) {
2971 if (readw(baseAddr + Magic_no) == Magic_code)
2973 moxadelay(1); /* delay 10 ms */
2975 if (readw(baseAddr + Magic_no) != Magic_code) {
2979 moxaIntNdx[cardno] = baseAddr + IRQindex;
2980 moxaIntPend[cardno] = baseAddr + IRQpending;
2981 moxaIntTable[cardno] = baseAddr + IRQtable;
2985 static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
2988 int i, j, wlen, len2, retry;
2993 uptr = (ushort *) moxaBuff;
2994 for (i = 0; i < wlen; i++)
3006 for (i = 0; i < len2; i++)
3007 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
3010 writew(len2, baseAddr + C320DLoad_len);
3011 writew(0, baseAddr + C320_key);
3012 for (i = 0; i < 10; i++) {
3013 if (readw(baseAddr + C320_key) == C320_KeyCode)
3017 if (readw(baseAddr + C320_key) != C320_KeyCode)
3020 writew(0, baseAddr + C320DLoad_len);
3021 writew(usum, baseAddr + C320check_sum);
3022 writew(0, baseAddr + C320_key);
3023 for (i = 0; i < 10; i++) {
3024 if (readw(baseAddr + C320_key) == C320_KeyCode)
3029 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
3030 if (readb(baseAddr + C320chksum_ok) != 1)
3032 writew(0, baseAddr + C320_key);
3033 for (i = 0; i < 600; i++) {
3034 if (readw(baseAddr + Magic_no) == Magic_code)
3038 if (readw(baseAddr + Magic_no) != Magic_code)
3041 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
3042 writew(0x3800, baseAddr + TMS320_PORT1);
3043 writew(0x3900, baseAddr + TMS320_PORT2);
3044 writew(28499, baseAddr + TMS320_CLOCK);
3046 writew(0x3200, baseAddr + TMS320_PORT1);
3047 writew(0x3400, baseAddr + TMS320_PORT2);
3048 writew(19999, baseAddr + TMS320_CLOCK);
3050 writew(1, baseAddr + Disable_IRQ);
3051 writew(0, baseAddr + Magic_no);
3052 for (i = 0; i < 500; i++) {
3053 if (readw(baseAddr + Magic_no) == Magic_code)
3057 if (readw(baseAddr + Magic_no) != Magic_code)
3060 j = readw(baseAddr + Module_cnt);
3064 writew(j, baseAddr + Module_no);
3065 writew(0, baseAddr + Magic_no);
3066 for (i = 0; i < 600; i++) {
3067 if (readw(baseAddr + Magic_no) == Magic_code)
3071 if (readw(baseAddr + Magic_no) != Magic_code)
3074 moxaIntNdx[cardno] = baseAddr + IRQindex;
3075 moxaIntPend[cardno] = baseAddr + IRQpending;
3076 moxaIntTable[cardno] = baseAddr + IRQtable;
3081 long MoxaPortGetCurBaud(int port)
3084 if (moxaChkPort[port] == 0)
3086 return (moxaCurBaud[port]);
3090 static void MoxaSetFifo(int port, int enable)
3092 void __iomem *ofsAddr = moxaTableAddr[port];
3095 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
3096 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
3098 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
3099 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
3104 int MoxaPortSetMode(int port, int databits, int stopbits, int parity)
3106 void __iomem *ofsAddr;
3129 break; /* stop bits 1.5 */
3158 ofsAddr = moxaTableAddr[port];
3159 moxafunc(ofsAddr, FC_SetMode, val);
3163 int MoxaPortTxBufSize(int port)
3165 void __iomem *ofsAddr;
3168 ofsAddr = moxaTableAddr[port];
3169 size = readw(ofsAddr + TX_mask);
3173 int MoxaPortRxBufSize(int port)
3175 void __iomem *ofsAddr;
3178 ofsAddr = moxaTableAddr[port];
3179 size = readw(ofsAddr + RX_mask);
3183 int MoxaPortRxFree(int port)
3185 void __iomem *ofsAddr;
3186 ushort rptr, wptr, mask;
3189 ofsAddr = moxaTableAddr[port];
3190 rptr = readw(ofsAddr + RXrptr);
3191 wptr = readw(ofsAddr + RXwptr);
3192 mask = readw(ofsAddr + RX_mask);
3193 len = mask - ((wptr - rptr) & mask);
3196 int MoxaPortGetBrkCnt(int port)
3198 return (moxaBreakCnt[port]);
3201 void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue)
3203 void __iomem *ofsAddr;
3205 ofsAddr = moxaTableAddr[port];
3206 writew(xonValue, ofsAddr + FuncArg);
3207 writew(xoffValue, ofsAddr + FuncArg1);
3208 writew(FC_SetXonXoff, ofsAddr + FuncCode);
3209 wait_finish(ofsAddr);
3212 int MoxaPortIsTxHold(int port)
3214 void __iomem *ofsAddr;
3217 ofsAddr = moxaTableAddr[port];
3218 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
3219 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
3220 moxafunc(ofsAddr, FC_GetCCSR, 0);
3221 val = readw(ofsAddr + FuncArg);
3225 if (readw(ofsAddr + FlagStat) & Tx_flowOff)