1 /*****************************************************************************/
3 * moxa.c -- MOXA Intellio family multiport serial driver.
5 * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com.tw).
7 * This code is loosely based on the Linux serial driver, written by
8 * Linus Torvalds, Theodore T'so and others.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 * MOXA Intellio Series Driver
32 #include <linux/module.h>
33 #include <linux/types.h>
35 #include <linux/ioport.h>
36 #include <linux/errno.h>
37 #include <linux/signal.h>
38 #include <linux/sched.h>
39 #include <linux/timer.h>
40 #include <linux/interrupt.h>
41 #include <linux/tty.h>
42 #include <linux/tty_flip.h>
43 #include <linux/major.h>
44 #include <linux/string.h>
45 #include <linux/fcntl.h>
46 #include <linux/ptrace.h>
47 #include <linux/serial.h>
48 #include <linux/tty_driver.h>
49 #include <linux/delay.h>
50 #include <linux/pci.h>
51 #include <linux/init.h>
52 #include <linux/bitops.h>
54 #include <asm/system.h>
56 #include <asm/uaccess.h>
58 #define MOXA_VERSION "5.1k"
61 #define MOXACUMAJOR 173
63 #define put_to_user(arg1, arg2) put_user(arg1, (unsigned long *)arg2)
64 #define get_from_user(arg1, arg2) get_user(arg1, (unsigned int *)arg2)
66 #define MAX_BOARDS 4 /* Don't change this value */
67 #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
68 #define MAX_PORTS 128 /* Don't change this value */
71 * Define the Moxa PCI vendor and device IDs.
73 #define MOXA_BUS_TYPE_ISA 0
74 #define MOXA_BUS_TYPE_PCI 1
76 #ifndef PCI_VENDOR_ID_MOXA
77 #define PCI_VENDOR_ID_MOXA 0x1393
79 #ifndef PCI_DEVICE_ID_CP204J
80 #define PCI_DEVICE_ID_CP204J 0x2040
82 #ifndef PCI_DEVICE_ID_C218
83 #define PCI_DEVICE_ID_C218 0x2180
85 #ifndef PCI_DEVICE_ID_C320
86 #define PCI_DEVICE_ID_C320 0x3200
90 MOXA_BOARD_C218_PCI = 1,
97 static char *moxa_brdname[] =
99 "C218 Turbo PCI series",
100 "C218 Turbo ISA series",
101 "C320 Turbo PCI series",
102 "C320 Turbo ISA series",
107 static struct pci_device_id moxa_pcibrds[] = {
108 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C218, PCI_ANY_ID, PCI_ANY_ID,
109 0, 0, MOXA_BOARD_C218_PCI },
110 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C320, PCI_ANY_ID, PCI_ANY_ID,
111 0, 0, MOXA_BOARD_C320_PCI },
112 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_CP204J, PCI_ANY_ID, PCI_ANY_ID,
113 0, 0, MOXA_BOARD_CP204J },
116 MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
117 #endif /* CONFIG_PCI */
119 typedef struct _moxa_isa_board_conf {
122 unsigned long baseAddr;
123 } moxa_isa_board_conf;
125 static moxa_isa_board_conf moxa_isa_boards[] =
127 /* {MOXA_BOARD_C218_ISA,8,0xDC000}, */
130 typedef struct _moxa_pci_devinfo {
133 struct pci_dev *pdev;
136 typedef struct _moxa_board_conf {
139 unsigned long baseAddr;
141 moxa_pci_devinfo pciInfo;
144 static moxa_board_conf moxa_boards[MAX_BOARDS];
145 static void __iomem *moxaBaseAddr[MAX_BOARDS];
146 static int loadstat[MAX_BOARDS];
152 unsigned short closing_wait;
155 long event; /* long req'd for set_bit --RR */
157 unsigned long statusflags;
158 struct tty_struct *tty;
160 wait_queue_head_t open_wait;
161 wait_queue_head_t close_wait;
162 struct work_struct tqueue;
165 struct mxser_mstatus {
173 static struct mxser_mstatus GMStatus[MAX_PORTS];
176 #define TXSTOPPED 0x1
178 #define EMPTYWAIT 0x4
182 #define MOXA_EVENT_HANGUP 1
184 #define SERIAL_DO_RESTART
187 #define SERIAL_TYPE_NORMAL 1
189 #define WAKEUP_CHARS 256
191 #define PORTNO(x) ((x)->index)
193 static int verbose = 0;
194 static int ttymajor = MOXAMAJOR;
195 /* Variables for insmod */
197 static int baseaddr[] = {0, 0, 0, 0};
198 static int type[] = {0, 0, 0, 0};
199 static int numports[] = {0, 0, 0, 0};
202 MODULE_AUTHOR("William Chen");
203 MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
204 MODULE_LICENSE("GPL");
206 module_param_array(type, int, NULL, 0);
207 module_param_array(baseaddr, int, NULL, 0);
208 module_param_array(numports, int, NULL, 0);
210 module_param(ttymajor, int, 0);
211 module_param(verbose, bool, 0644);
213 static struct tty_driver *moxaDriver;
214 static struct moxa_str moxaChannels[MAX_PORTS];
215 static unsigned char *moxaXmitBuff;
216 static int moxaTimer_on;
217 static struct timer_list moxaTimer;
218 static int moxaEmptyTimer_on[MAX_PORTS];
219 static struct timer_list moxaEmptyTimer[MAX_PORTS];
220 static struct semaphore moxaBuffSem;
225 static void do_moxa_softint(struct work_struct *);
226 static int moxa_open(struct tty_struct *, struct file *);
227 static void moxa_close(struct tty_struct *, struct file *);
228 static int moxa_write(struct tty_struct *, const unsigned char *, int);
229 static int moxa_write_room(struct tty_struct *);
230 static void moxa_flush_buffer(struct tty_struct *);
231 static int moxa_chars_in_buffer(struct tty_struct *);
232 static void moxa_flush_chars(struct tty_struct *);
233 static void moxa_put_char(struct tty_struct *, unsigned char);
234 static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
235 static void moxa_throttle(struct tty_struct *);
236 static void moxa_unthrottle(struct tty_struct *);
237 static void moxa_set_termios(struct tty_struct *, struct ktermios *);
238 static void moxa_stop(struct tty_struct *);
239 static void moxa_start(struct tty_struct *);
240 static void moxa_hangup(struct tty_struct *);
241 static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
242 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
243 unsigned int set, unsigned int clear);
244 static void moxa_poll(unsigned long);
245 static void set_tty_param(struct tty_struct *);
246 static int block_till_ready(struct tty_struct *, struct file *,
248 static void setup_empty_event(struct tty_struct *);
249 static void check_xmit_empty(unsigned long);
250 static void shut_down(struct moxa_str *);
251 static void receive_data(struct moxa_str *);
253 * moxa board interface functions:
255 static void MoxaDriverInit(void);
256 static int MoxaDriverIoctl(unsigned int, unsigned long, int);
257 static int MoxaDriverPoll(void);
258 static int MoxaPortsOfCard(int);
259 static int MoxaPortIsValid(int);
260 static void MoxaPortEnable(int);
261 static void MoxaPortDisable(int);
262 static long MoxaPortGetMaxBaud(int);
263 static long MoxaPortSetBaud(int, long);
264 static int MoxaPortSetTermio(int, struct ktermios *, speed_t);
265 static int MoxaPortGetLineOut(int, int *, int *);
266 static void MoxaPortLineCtrl(int, int, int);
267 static void MoxaPortFlowCtrl(int, int, int, int, int, int);
268 static int MoxaPortLineStatus(int);
269 static int MoxaPortDCDChange(int);
270 static int MoxaPortDCDON(int);
271 static void MoxaPortFlushData(int, int);
272 static int MoxaPortWriteData(int, unsigned char *, int);
273 static int MoxaPortReadData(int, struct tty_struct *tty);
274 static int MoxaPortTxQueue(int);
275 static int MoxaPortRxQueue(int);
276 static int MoxaPortTxFree(int);
277 static void MoxaPortTxDisable(int);
278 static void MoxaPortTxEnable(int);
279 static int MoxaPortResetBrkCnt(int);
280 static void MoxaPortSendBreak(int, int);
281 static int moxa_get_serial_info(struct moxa_str *, struct serial_struct __user *);
282 static int moxa_set_serial_info(struct moxa_str *, struct serial_struct __user *);
283 static void MoxaSetFifo(int port, int enable);
285 static const struct tty_operations moxa_ops = {
289 .write_room = moxa_write_room,
290 .flush_buffer = moxa_flush_buffer,
291 .chars_in_buffer = moxa_chars_in_buffer,
292 .flush_chars = moxa_flush_chars,
293 .put_char = moxa_put_char,
295 .throttle = moxa_throttle,
296 .unthrottle = moxa_unthrottle,
297 .set_termios = moxa_set_termios,
300 .hangup = moxa_hangup,
301 .tiocmget = moxa_tiocmget,
302 .tiocmset = moxa_tiocmset,
305 static DEFINE_SPINLOCK(moxa_lock);
308 static int moxa_get_PCI_conf(struct pci_dev *p, int board_type, moxa_board_conf * board)
310 board->baseAddr = pci_resource_start (p, 2);
311 board->boardType = board_type;
312 switch (board_type) {
313 case MOXA_BOARD_C218_ISA:
314 case MOXA_BOARD_C218_PCI:
318 case MOXA_BOARD_CP204J:
325 board->busType = MOXA_BUS_TYPE_PCI;
326 board->pciInfo.busNum = p->bus->number;
327 board->pciInfo.devNum = p->devfn >> 3;
328 board->pciInfo.pdev = p;
329 /* don't lose the reference in the next pci_get_device iteration */
334 #endif /* CONFIG_PCI */
336 static int __init moxa_init(void)
341 printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION);
342 moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
346 init_MUTEX(&moxaBuffSem);
347 moxaDriver->owner = THIS_MODULE;
348 moxaDriver->name = "ttyMX";
349 moxaDriver->major = ttymajor;
350 moxaDriver->minor_start = 0;
351 moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
352 moxaDriver->subtype = SERIAL_TYPE_NORMAL;
353 moxaDriver->init_termios = tty_std_termios;
354 moxaDriver->init_termios.c_iflag = 0;
355 moxaDriver->init_termios.c_oflag = 0;
356 moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
357 moxaDriver->init_termios.c_lflag = 0;
358 moxaDriver->init_termios.c_ispeed = 9600;
359 moxaDriver->init_termios.c_ospeed = 9600;
360 moxaDriver->flags = TTY_DRIVER_REAL_RAW;
361 tty_set_operations(moxaDriver, &moxa_ops);
365 for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) {
366 ch->type = PORT_16550A;
368 INIT_WORK(&ch->tqueue, do_moxa_softint);
370 ch->close_delay = 5 * HZ / 10;
371 ch->closing_wait = 30 * HZ;
373 ch->blocked_open = 0;
374 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
375 init_waitqueue_head(&ch->open_wait);
376 init_waitqueue_head(&ch->close_wait);
379 for (i = 0; i < MAX_BOARDS; i++) {
380 moxa_boards[i].boardType = 0;
381 moxa_boards[i].numPorts = 0;
382 moxa_boards[i].baseAddr = 0;
383 moxa_boards[i].busType = 0;
384 moxa_boards[i].pciInfo.busNum = 0;
385 moxa_boards[i].pciInfo.devNum = 0;
388 printk("Tty devices major number = %d\n", ttymajor);
390 if (tty_register_driver(moxaDriver)) {
391 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
392 put_tty_driver(moxaDriver);
395 for (i = 0; i < MAX_PORTS; i++) {
396 init_timer(&moxaEmptyTimer[i]);
397 moxaEmptyTimer[i].function = check_xmit_empty;
398 moxaEmptyTimer[i].data = (unsigned long) & moxaChannels[i];
399 moxaEmptyTimer_on[i] = 0;
402 init_timer(&moxaTimer);
403 moxaTimer.function = moxa_poll;
404 moxaTimer.expires = jiffies + (HZ / 50);
406 add_timer(&moxaTimer);
408 /* Find the boards defined in source code */
410 for (i = 0; i < MAX_BOARDS; i++) {
411 if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) ||
412 (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) {
413 moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType;
414 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
415 moxa_boards[numBoards].numPorts = 8;
417 moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts;
418 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
419 moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr;
421 printk("Board %2d: %s board(baseAddr=%lx)\n",
423 moxa_brdname[moxa_boards[numBoards].boardType - 1],
424 moxa_boards[numBoards].baseAddr);
428 /* Find the boards defined form module args. */
430 for (i = 0; i < MAX_BOARDS; i++) {
431 if ((type[i] == MOXA_BOARD_C218_ISA) ||
432 (type[i] == MOXA_BOARD_C320_ISA)) {
434 printk("Board %2d: %s board(baseAddr=%lx)\n",
436 moxa_brdname[type[i] - 1],
437 (unsigned long) baseaddr[i]);
438 if (numBoards >= MAX_BOARDS) {
440 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
443 moxa_boards[numBoards].boardType = type[i];
444 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
445 moxa_boards[numBoards].numPorts = 8;
447 moxa_boards[numBoards].numPorts = numports[i];
448 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
449 moxa_boards[numBoards].baseAddr = baseaddr[i];
454 /* Find PCI boards here */
457 struct pci_dev *p = NULL;
458 int n = ARRAY_SIZE(moxa_pcibrds) - 1;
461 while ((p = pci_get_device(moxa_pcibrds[i].vendor, moxa_pcibrds[i].device, p))!=NULL)
463 if (pci_enable_device(p))
465 if (numBoards >= MAX_BOARDS) {
467 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
469 moxa_get_PCI_conf(p, moxa_pcibrds[i].driver_data,
470 &moxa_boards[numBoards]);
478 for (i = 0; i < numBoards; i++) {
479 moxaBaseAddr[i] = ioremap((unsigned long) moxa_boards[i].baseAddr, 0x4000);
485 static void __exit moxa_exit(void)
490 printk("Unloading module moxa ...\n");
493 del_timer(&moxaTimer);
495 for (i = 0; i < MAX_PORTS; i++)
496 if (moxaEmptyTimer_on[i])
497 del_timer(&moxaEmptyTimer[i]);
499 if (tty_unregister_driver(moxaDriver))
500 printk("Couldn't unregister MOXA Intellio family serial driver\n");
501 put_tty_driver(moxaDriver);
503 for (i = 0; i < MAX_BOARDS; i++) {
505 iounmap(moxaBaseAddr[i]);
506 if (moxa_boards[i].busType == MOXA_BUS_TYPE_PCI)
507 pci_dev_put(moxa_boards[i].pciInfo.pdev);
514 module_init(moxa_init);
515 module_exit(moxa_exit);
517 static void do_moxa_softint(struct work_struct *work)
519 struct moxa_str *ch = container_of(work, struct moxa_str, tqueue);
520 struct tty_struct *tty;
522 if (ch && (tty = ch->tty)) {
523 if (test_and_clear_bit(MOXA_EVENT_HANGUP, &ch->event)) {
524 tty_hangup(tty); /* FIXME: module removal race here - AKPM */
525 wake_up_interruptible(&ch->open_wait);
526 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
531 static int moxa_open(struct tty_struct *tty, struct file *filp)
539 if (port == MAX_PORTS) {
542 if (!MoxaPortIsValid(port)) {
543 tty->driver_data = NULL;
548 page = get_zeroed_page(GFP_KERNEL);
553 /* This test is guarded by the BuffSem so no longer needed
558 moxaXmitBuff = (unsigned char *) page;
562 ch = &moxaChannels[port];
564 tty->driver_data = ch;
566 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
569 MoxaPortLineCtrl(ch->port, 1, 1);
570 MoxaPortEnable(ch->port);
571 ch->asyncflags |= ASYNC_INITIALIZED;
573 retval = block_till_ready(tty, filp, ch);
575 moxa_unthrottle(tty);
577 if (ch->type == PORT_16550A) {
578 MoxaSetFifo(ch->port, 1);
580 MoxaSetFifo(ch->port, 0);
586 static void moxa_close(struct tty_struct *tty, struct file *filp)
592 if (port == MAX_PORTS) {
595 if (!MoxaPortIsValid(port)) {
596 #ifdef SERIAL_DEBUG_CLOSE
597 printk("Invalid portno in moxa_close\n");
599 tty->driver_data = NULL;
602 if (tty->driver_data == NULL) {
605 if (tty_hung_up_p(filp)) {
608 ch = (struct moxa_str *) tty->driver_data;
610 if ((tty->count == 1) && (ch->count != 1)) {
611 printk("moxa_close: bad serial port count; tty->count is 1, "
612 "ch->count is %d\n", ch->count);
615 if (--ch->count < 0) {
616 printk("moxa_close: bad serial port count, device=%s\n",
623 ch->asyncflags |= ASYNC_CLOSING;
625 ch->cflag = tty->termios->c_cflag;
626 if (ch->asyncflags & ASYNC_INITIALIZED) {
627 setup_empty_event(tty);
628 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
629 moxaEmptyTimer_on[ch->port] = 0;
630 del_timer(&moxaEmptyTimer[ch->port]);
633 MoxaPortFlushData(port, 2);
635 if (tty->driver->flush_buffer)
636 tty->driver->flush_buffer(tty);
637 tty_ldisc_flush(tty);
642 if (ch->blocked_open) {
643 if (ch->close_delay) {
644 msleep_interruptible(jiffies_to_msecs(ch->close_delay));
646 wake_up_interruptible(&ch->open_wait);
648 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
649 wake_up_interruptible(&ch->close_wait);
652 static int moxa_write(struct tty_struct *tty,
653 const unsigned char *buf, int count)
659 ch = (struct moxa_str *) tty->driver_data;
664 spin_lock_irqsave(&moxa_lock, flags);
665 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
666 spin_unlock_irqrestore(&moxa_lock, flags);
668 /*********************************************
669 if ( !(ch->statusflags & LOWWAIT) &&
670 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
671 ************************************************/
672 ch->statusflags |= LOWWAIT;
676 static int moxa_write_room(struct tty_struct *tty)
682 ch = (struct moxa_str *) tty->driver_data;
685 return (MoxaPortTxFree(ch->port));
688 static void moxa_flush_buffer(struct tty_struct *tty)
690 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
694 MoxaPortFlushData(ch->port, 1);
698 static int moxa_chars_in_buffer(struct tty_struct *tty)
701 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
704 * Sigh...I have to check if driver_data is NULL here, because
705 * if an open() fails, the TTY subsystem eventually calls
706 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
707 * routine. And since the open() failed, we return 0 here. TDJ
711 chars = MoxaPortTxQueue(ch->port);
714 * Make it possible to wakeup anything waiting for output
715 * in tty_ioctl.c, etc.
717 if (!(ch->statusflags & EMPTYWAIT))
718 setup_empty_event(tty);
723 static void moxa_flush_chars(struct tty_struct *tty)
726 * Don't think I need this, because this is called to empty the TX
727 * buffer for the 16450, 16550, etc.
731 static void moxa_put_char(struct tty_struct *tty, unsigned char c)
737 ch = (struct moxa_str *) tty->driver_data;
741 spin_lock_irqsave(&moxa_lock, flags);
743 MoxaPortWriteData(port, moxaXmitBuff, 1);
744 spin_unlock_irqrestore(&moxa_lock, flags);
745 /************************************************
746 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
747 *************************************************/
748 ch->statusflags |= LOWWAIT;
751 static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
753 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
755 int flag = 0, dtr, rts;
758 if ((port != MAX_PORTS) && (!ch))
761 MoxaPortGetLineOut(ch->port, &dtr, &rts);
766 dtr = MoxaPortLineStatus(ch->port);
776 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
777 unsigned int set, unsigned int clear)
779 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
784 if ((port != MAX_PORTS) && (!ch))
787 MoxaPortGetLineOut(ch->port, &dtr, &rts);
792 if (clear & TIOCM_RTS)
794 if (clear & TIOCM_DTR)
796 MoxaPortLineCtrl(ch->port, dtr, rts);
800 static int moxa_ioctl(struct tty_struct *tty, struct file *file,
801 unsigned int cmd, unsigned long arg)
803 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
805 void __user *argp = (void __user *)arg;
809 if ((port != MAX_PORTS) && (!ch))
813 case TCSBRK: /* SVID version: non-zero arg --> no break */
814 retval = tty_check_change(tty);
817 setup_empty_event(tty);
818 tty_wait_until_sent(tty, 0);
820 MoxaPortSendBreak(ch->port, 0);
822 case TCSBRKP: /* support for POSIX tcsendbreak() */
823 retval = tty_check_change(tty);
826 setup_empty_event(tty);
827 tty_wait_until_sent(tty, 0);
828 MoxaPortSendBreak(ch->port, arg);
831 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
833 if(get_user(retval, (unsigned long __user *) argp))
836 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
839 ch->asyncflags &= ~ASYNC_CHECK_CD;
841 ch->asyncflags |= ASYNC_CHECK_CD;
844 return moxa_get_serial_info(ch, argp);
847 return moxa_set_serial_info(ch, argp);
849 retval = MoxaDriverIoctl(cmd, arg, port);
854 static void moxa_throttle(struct tty_struct *tty)
856 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
858 ch->statusflags |= THROTTLE;
861 static void moxa_unthrottle(struct tty_struct *tty)
863 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
865 ch->statusflags &= ~THROTTLE;
868 static void moxa_set_termios(struct tty_struct *tty,
869 struct ktermios *old_termios)
871 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
876 if (!(old_termios->c_cflag & CLOCAL) &&
877 (tty->termios->c_cflag & CLOCAL))
878 wake_up_interruptible(&ch->open_wait);
881 static void moxa_stop(struct tty_struct *tty)
883 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
887 MoxaPortTxDisable(ch->port);
888 ch->statusflags |= TXSTOPPED;
892 static void moxa_start(struct tty_struct *tty)
894 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
899 if (!(ch->statusflags & TXSTOPPED))
902 MoxaPortTxEnable(ch->port);
903 ch->statusflags &= ~TXSTOPPED;
906 static void moxa_hangup(struct tty_struct *tty)
908 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
910 moxa_flush_buffer(tty);
914 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
916 wake_up_interruptible(&ch->open_wait);
919 static void moxa_poll(unsigned long ignored)
923 struct tty_struct *tp;
927 del_timer(&moxaTimer);
929 if (MoxaDriverPoll() < 0) {
930 moxaTimer.function = moxa_poll;
931 moxaTimer.expires = jiffies + (HZ / 50);
933 add_timer(&moxaTimer);
936 for (card = 0; card < MAX_BOARDS; card++) {
937 if ((ports = MoxaPortsOfCard(card)) <= 0)
939 ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
940 for (i = 0; i < ports; i++, ch++) {
941 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
943 if (!(ch->statusflags & THROTTLE) &&
944 (MoxaPortRxQueue(ch->port) > 0))
946 if ((tp = ch->tty) == 0)
948 if (ch->statusflags & LOWWAIT) {
949 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
951 ch->statusflags &= ~LOWWAIT;
956 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
957 tty_insert_flip_char(tp, 0, TTY_BREAK);
958 tty_schedule_flip(tp);
960 if (MoxaPortDCDChange(ch->port)) {
961 if (ch->asyncflags & ASYNC_CHECK_CD) {
962 if (MoxaPortDCDON(ch->port))
963 wake_up_interruptible(&ch->open_wait);
965 set_bit(MOXA_EVENT_HANGUP, &ch->event);
966 schedule_work(&ch->tqueue);
973 moxaTimer.function = moxa_poll;
974 moxaTimer.expires = jiffies + (HZ / 50);
976 add_timer(&moxaTimer);
979 /******************************************************************************/
981 static void set_tty_param(struct tty_struct *tty)
983 register struct ktermios *ts;
985 int rts, cts, txflow, rxflow, xany;
987 ch = (struct moxa_str *) tty->driver_data;
989 if (ts->c_cflag & CLOCAL)
990 ch->asyncflags &= ~ASYNC_CHECK_CD;
992 ch->asyncflags |= ASYNC_CHECK_CD;
993 rts = cts = txflow = rxflow = xany = 0;
994 if (ts->c_cflag & CRTSCTS)
996 if (ts->c_iflag & IXON)
998 if (ts->c_iflag & IXOFF)
1000 if (ts->c_iflag & IXANY)
1002 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
1003 MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty));
1006 static int block_till_ready(struct tty_struct *tty, struct file *filp,
1007 struct moxa_str *ch)
1009 DECLARE_WAITQUEUE(wait,current);
1010 unsigned long flags;
1012 int do_clocal = C_CLOCAL(tty);
1015 * If the device is in the middle of being closed, then block
1016 * until it's done, and then try again.
1018 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
1019 if (ch->asyncflags & ASYNC_CLOSING)
1020 interruptible_sleep_on(&ch->close_wait);
1021 #ifdef SERIAL_DO_RESTART
1022 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1025 return (-ERESTARTSYS);
1031 * If non-blocking mode is set, then make the check up front
1034 if (filp->f_flags & O_NONBLOCK) {
1035 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1039 * Block waiting for the carrier detect and the line to become free
1042 add_wait_queue(&ch->open_wait, &wait);
1043 #ifdef SERIAL_DEBUG_OPEN
1044 printk("block_til_ready before block: ttys%d, count = %d\n",
1045 ch->line, ch->count);
1047 spin_lock_irqsave(&moxa_lock, flags);
1048 if (!tty_hung_up_p(filp))
1051 spin_unlock_irqrestore(&moxa_lock, flags);
1054 set_current_state(TASK_INTERRUPTIBLE);
1055 if (tty_hung_up_p(filp) ||
1056 !(ch->asyncflags & ASYNC_INITIALIZED)) {
1057 #ifdef SERIAL_DO_RESTART
1058 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1061 retval = -ERESTARTSYS;
1067 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
1068 MoxaPortDCDON(ch->port)))
1071 if (signal_pending(current)) {
1072 retval = -ERESTARTSYS;
1077 set_current_state(TASK_RUNNING);
1078 remove_wait_queue(&ch->open_wait, &wait);
1080 spin_lock_irqsave(&moxa_lock, flags);
1081 if (!tty_hung_up_p(filp))
1084 spin_unlock_irqrestore(&moxa_lock, flags);
1085 #ifdef SERIAL_DEBUG_OPEN
1086 printk("block_til_ready after blocking: ttys%d, count = %d\n",
1087 ch->line, ch->count);
1091 /* FIXME: review to see if we need to use set_bit on these */
1092 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1096 static void setup_empty_event(struct tty_struct *tty)
1098 struct moxa_str *ch = tty->driver_data;
1099 unsigned long flags;
1101 spin_lock_irqsave(&moxa_lock, flags);
1102 ch->statusflags |= EMPTYWAIT;
1103 moxaEmptyTimer_on[ch->port] = 0;
1104 del_timer(&moxaEmptyTimer[ch->port]);
1105 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1106 moxaEmptyTimer_on[ch->port] = 1;
1107 add_timer(&moxaEmptyTimer[ch->port]);
1108 spin_unlock_irqrestore(&moxa_lock, flags);
1111 static void check_xmit_empty(unsigned long data)
1113 struct moxa_str *ch;
1115 ch = (struct moxa_str *) data;
1116 moxaEmptyTimer_on[ch->port] = 0;
1117 del_timer(&moxaEmptyTimer[ch->port]);
1118 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1119 if (MoxaPortTxQueue(ch->port) == 0) {
1120 ch->statusflags &= ~EMPTYWAIT;
1121 tty_wakeup(ch->tty);
1124 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1125 moxaEmptyTimer_on[ch->port] = 1;
1126 add_timer(&moxaEmptyTimer[ch->port]);
1128 ch->statusflags &= ~EMPTYWAIT;
1131 static void shut_down(struct moxa_str *ch)
1133 struct tty_struct *tp;
1135 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1140 MoxaPortDisable(ch->port);
1143 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1145 if (tp->termios->c_cflag & HUPCL)
1146 MoxaPortLineCtrl(ch->port, 0, 0);
1148 ch->asyncflags &= ~ASYNC_INITIALIZED;
1151 static void receive_data(struct moxa_str *ch)
1153 struct tty_struct *tp;
1154 struct ktermios *ts;
1155 unsigned long flags;
1161 /**************************************************
1162 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1163 *****************************************************/
1165 MoxaPortFlushData(ch->port, 0);
1168 spin_lock_irqsave(&moxa_lock, flags);
1169 MoxaPortReadData(ch->port, tp);
1170 spin_unlock_irqrestore(&moxa_lock, flags);
1171 tty_schedule_flip(tp);
1174 #define Magic_code 0x404
1177 * System Configuration
1180 * for C218 BIOS initialization
1182 #define C218_ConfBase 0x800
1183 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1184 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1185 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1186 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1187 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1188 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1189 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1190 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1191 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1192 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1194 #define C218_LoadBuf 0x0F00
1195 #define C218_KeyCode 0x218
1196 #define CP204J_KeyCode 0x204
1199 * for C320 BIOS initialization
1201 #define C320_ConfBase 0x800
1202 #define C320_LoadBuf 0x0f00
1203 #define STS_init 0x05 /* for C320_status */
1205 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1206 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1207 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1208 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1209 #define C320check_sum C320_ConfBase + 8 /* WORD */
1210 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1211 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1212 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1214 #define C320_KeyCode 0x320
1216 #define FixPage_addr 0x0000 /* starting addr of static page */
1217 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1218 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1219 #define Control_reg 0x1ff0 /* select page and reset control */
1220 #define HW_reset 0x80
1225 #define FC_CardReset 0x80
1226 #define FC_ChannelReset 1 /* C320 firmware not supported */
1227 #define FC_EnableCH 2
1228 #define FC_DisableCH 3
1229 #define FC_SetParam 4
1230 #define FC_SetMode 5
1231 #define FC_SetRate 6
1232 #define FC_LineControl 7
1233 #define FC_LineStatus 8
1234 #define FC_XmitControl 9
1235 #define FC_FlushQueue 10
1236 #define FC_SendBreak 11
1237 #define FC_StopBreak 12
1238 #define FC_LoopbackON 13
1239 #define FC_LoopbackOFF 14
1240 #define FC_ClrIrqTable 15
1241 #define FC_SendXon 16
1242 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1243 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1244 #define FC_SetBreakIrq 19
1245 #define FC_SetLineIrq 20
1246 #define FC_SetFlowCtl 21
1247 #define FC_GenIrq 22
1248 #define FC_InCD180 23
1249 #define FC_OutCD180 24
1250 #define FC_InUARTreg 23
1251 #define FC_OutUARTreg 24
1252 #define FC_SetXonXoff 25
1253 #define FC_OutCD180CCR 26
1254 #define FC_ExtIQueue 27
1255 #define FC_ExtOQueue 28
1256 #define FC_ClrLineIrq 29
1257 #define FC_HWFlowCtl 30
1258 #define FC_GetClockRate 35
1259 #define FC_SetBaud 36
1260 #define FC_SetDataMode 41
1261 #define FC_GetCCSR 43
1262 #define FC_GetDataError 45
1263 #define FC_RxControl 50
1264 #define FC_ImmSend 51
1265 #define FC_SetXonState 52
1266 #define FC_SetXoffState 53
1267 #define FC_SetRxFIFOTrig 54
1268 #define FC_SetTxFIFOCnt 55
1269 #define FC_UnixRate 56
1270 #define FC_UnixResetTimer 57
1272 #define RxFIFOTrig1 0
1273 #define RxFIFOTrig4 1
1274 #define RxFIFOTrig8 2
1275 #define RxFIFOTrig14 3
1280 #define DRAM_global 0
1281 #define INT_data (DRAM_global + 0)
1282 #define Config_base (DRAM_global + 0x108)
1284 #define IRQindex (INT_data + 0)
1285 #define IRQpending (INT_data + 4)
1286 #define IRQtable (INT_data + 8)
1291 #define IntrRx 0x01 /* receiver data O.K. */
1292 #define IntrTx 0x02 /* transmit buffer empty */
1293 #define IntrFunc 0x04 /* function complete */
1294 #define IntrBreak 0x08 /* received break */
1295 #define IntrLine 0x10 /* line status change
1297 #define IntrIntr 0x20 /* received INTR code */
1298 #define IntrQuit 0x40 /* received QUIT code */
1299 #define IntrEOF 0x80 /* received EOF code */
1301 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1302 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1304 #define Magic_no (Config_base + 0)
1305 #define Card_model_no (Config_base + 2)
1306 #define Total_ports (Config_base + 4)
1307 #define Module_cnt (Config_base + 8)
1308 #define Module_no (Config_base + 10)
1309 #define Timer_10ms (Config_base + 14)
1310 #define Disable_IRQ (Config_base + 20)
1311 #define TMS320_PORT1 (Config_base + 22)
1312 #define TMS320_PORT2 (Config_base + 24)
1313 #define TMS320_CLOCK (Config_base + 26)
1316 * DATA BUFFER in DRAM
1318 #define Extern_table 0x400 /* Base address of the external table
1319 (24 words * 64) total 3K bytes
1320 (24 words * 128) total 6K bytes */
1321 #define Extern_size 0x60 /* 96 bytes */
1322 #define RXrptr 0x00 /* read pointer for RX buffer */
1323 #define RXwptr 0x02 /* write pointer for RX buffer */
1324 #define TXrptr 0x04 /* read pointer for TX buffer */
1325 #define TXwptr 0x06 /* write pointer for TX buffer */
1326 #define HostStat 0x08 /* IRQ flag and general flag */
1327 #define FlagStat 0x0A
1328 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1329 /* x x x x | | | | */
1330 /* | | | + CTS flow */
1331 /* | | +--- RTS flow */
1332 /* | +------ TX Xon/Xoff */
1333 /* +--------- RX Xon/Xoff */
1334 #define Break_cnt 0x0E /* received break count */
1335 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1336 #define RX_mask 0x12
1337 #define TX_mask 0x14
1338 #define Ofs_rxb 0x16
1339 #define Ofs_txb 0x18
1340 #define Page_rxb 0x1A
1341 #define Page_txb 0x1C
1342 #define EndPage_rxb 0x1E
1343 #define EndPage_txb 0x20
1344 #define Data_error 0x22
1345 #define RxTrigger 0x28
1346 #define TxTrigger 0x2a
1348 #define rRXwptr 0x34
1349 #define Low_water 0x36
1351 #define FuncCode 0x40
1352 #define FuncArg 0x42
1353 #define FuncArg1 0x44
1355 #define C218rx_size 0x2000 /* 8K bytes */
1356 #define C218tx_size 0x8000 /* 32K bytes */
1358 #define C218rx_mask (C218rx_size - 1)
1359 #define C218tx_mask (C218tx_size - 1)
1361 #define C320p8rx_size 0x2000
1362 #define C320p8tx_size 0x8000
1363 #define C320p8rx_mask (C320p8rx_size - 1)
1364 #define C320p8tx_mask (C320p8tx_size - 1)
1366 #define C320p16rx_size 0x2000
1367 #define C320p16tx_size 0x4000
1368 #define C320p16rx_mask (C320p16rx_size - 1)
1369 #define C320p16tx_mask (C320p16tx_size - 1)
1371 #define C320p24rx_size 0x2000
1372 #define C320p24tx_size 0x2000
1373 #define C320p24rx_mask (C320p24rx_size - 1)
1374 #define C320p24tx_mask (C320p24tx_size - 1)
1376 #define C320p32rx_size 0x1000
1377 #define C320p32tx_size 0x1000
1378 #define C320p32rx_mask (C320p32rx_size - 1)
1379 #define C320p32tx_mask (C320p32tx_size - 1)
1381 #define Page_size 0x2000
1382 #define Page_mask (Page_size - 1)
1383 #define C218rx_spage 3
1384 #define C218tx_spage 4
1385 #define C218rx_pageno 1
1386 #define C218tx_pageno 4
1387 #define C218buf_pageno 5
1389 #define C320p8rx_spage 3
1390 #define C320p8tx_spage 4
1391 #define C320p8rx_pgno 1
1392 #define C320p8tx_pgno 4
1393 #define C320p8buf_pgno 5
1395 #define C320p16rx_spage 3
1396 #define C320p16tx_spage 4
1397 #define C320p16rx_pgno 1
1398 #define C320p16tx_pgno 2
1399 #define C320p16buf_pgno 3
1401 #define C320p24rx_spage 3
1402 #define C320p24tx_spage 4
1403 #define C320p24rx_pgno 1
1404 #define C320p24tx_pgno 1
1405 #define C320p24buf_pgno 2
1407 #define C320p32rx_spage 3
1408 #define C320p32tx_ofs C320p32rx_size
1409 #define C320p32tx_spage 3
1410 #define C320p32buf_pgno 1
1415 #define WakeupRx 0x01
1416 #define WakeupTx 0x02
1417 #define WakeupBreak 0x08
1418 #define WakeupLine 0x10
1419 #define WakeupIntr 0x20
1420 #define WakeupQuit 0x40
1421 #define WakeupEOF 0x80 /* used in VTIME control */
1422 #define WakeupRxTrigger 0x100
1423 #define WakeupTxTrigger 0x200
1427 #define Rx_over 0x01
1428 #define Xoff_state 0x02
1429 #define Tx_flowOff 0x04
1430 #define Tx_enable 0x08
1431 #define CTS_state 0x10
1432 #define DSR_state 0x20
1433 #define DCD_state 0x80
1437 #define CTS_FlowCtl 1
1438 #define RTS_FlowCtl 2
1439 #define Tx_FlowCtl 4
1440 #define Rx_FlowCtl 8
1441 #define IXM_IXANY 0x10
1443 #define LowWater 128
1451 /* mode definition */
1457 #define MX_STOP1 0x00
1458 #define MX_STOP15 0x04
1459 #define MX_STOP2 0x08
1461 #define MX_PARNONE 0x00
1462 #define MX_PAREVEN 0x40
1463 #define MX_PARODD 0xC0
1468 #define QueryPort MAX_PORTS
1474 int rxcnt[MAX_PORTS];
1475 int txcnt[MAX_PORTS];
1477 typedef struct mon_str mon_st;
1479 #define DCD_changed 0x01
1480 #define DCD_oldstate 0x80
1482 static unsigned char moxaBuff[10240];
1483 static void __iomem *moxaIntNdx[MAX_BOARDS];
1484 static void __iomem *moxaIntPend[MAX_BOARDS];
1485 static void __iomem *moxaIntTable[MAX_BOARDS];
1486 static char moxaChkPort[MAX_PORTS];
1487 static char moxaLineCtrl[MAX_PORTS];
1488 static void __iomem *moxaTableAddr[MAX_PORTS];
1489 static long moxaCurBaud[MAX_PORTS];
1490 static char moxaDCDState[MAX_PORTS];
1491 static char moxaLowChkFlag[MAX_PORTS];
1492 static int moxaLowWaterChk;
1493 static int moxaCard;
1494 static mon_st moxaLog;
1495 static int moxaFuncTout;
1496 static ushort moxaBreakCnt[MAX_PORTS];
1498 static void moxadelay(int);
1499 static void moxafunc(void __iomem *, int, ushort);
1500 static void wait_finish(void __iomem *);
1501 static void low_water_check(void __iomem *);
1502 static int moxaloadbios(int, unsigned char __user *, int);
1503 static int moxafindcard(int);
1504 static int moxaload320b(int, unsigned char __user *, int);
1505 static int moxaloadcode(int, unsigned char __user *, int);
1506 static int moxaloadc218(int, void __iomem *, int);
1507 static int moxaloadc320(int, void __iomem *, int, int *);
1509 /*****************************************************************************
1510 * Driver level functions: *
1511 * 1. MoxaDriverInit(void); *
1512 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1513 * 3. MoxaDriverPoll(void); *
1514 *****************************************************************************/
1515 void MoxaDriverInit(void)
1519 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1522 moxaLowWaterChk = 0;
1523 for (i = 0; i < MAX_PORTS; i++) {
1525 moxaLowChkFlag[i] = 0;
1526 moxaLineCtrl[i] = 0;
1527 moxaLog.rxcnt[i] = 0;
1528 moxaLog.txcnt[i] = 0;
1533 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1534 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1535 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1536 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1537 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1538 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1539 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1540 #define MOXA_GETDATACOUNT (MOXA + 23)
1541 #define MOXA_GET_IOQUEUE (MOXA + 27)
1542 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1543 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1544 #define MOXA_GET_MAJOR (MOXA + 63)
1545 #define MOXA_GET_CUMAJOR (MOXA + 64)
1546 #define MOXA_GETMSTATUS (MOXA + 65)
1560 static struct moxaq_str temp_queue[MAX_PORTS];
1561 static struct dl_str dltmp;
1563 void MoxaPortFlushData(int port, int mode)
1565 void __iomem *ofsAddr;
1566 if ((mode < 0) || (mode > 2))
1568 ofsAddr = moxaTableAddr[port];
1569 moxafunc(ofsAddr, FC_FlushQueue, mode);
1571 moxaLowChkFlag[port] = 0;
1572 low_water_check(ofsAddr);
1576 int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1580 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1581 void __user *argp = (void __user *)arg;
1583 if (port == QueryPort) {
1584 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1585 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1586 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1587 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1588 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1593 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS * sizeof(moxa_board_conf)))
1596 case MOXA_INIT_DRIVER:
1597 if ((int) arg == 0x404)
1600 case MOXA_GETDATACOUNT:
1601 moxaLog.tick = jiffies;
1602 if(copy_to_user(argp, &moxaLog, sizeof(mon_st)))
1605 case MOXA_FLUSH_QUEUE:
1606 MoxaPortFlushData(port, arg);
1608 case MOXA_GET_IOQUEUE:
1609 for (i = 0; i < MAX_PORTS; i++) {
1610 if (moxaChkPort[i]) {
1611 temp_queue[i].inq = MoxaPortRxQueue(i);
1612 temp_queue[i].outq = MoxaPortTxQueue(i);
1615 if(copy_to_user(argp, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
1618 case MOXA_GET_OQUEUE:
1619 i = MoxaPortTxQueue(port);
1620 return put_user(i, (unsigned long __user *)argp);
1621 case MOXA_GET_IQUEUE:
1622 i = MoxaPortRxQueue(port);
1623 return put_user(i, (unsigned long __user *)argp);
1624 case MOXA_GET_MAJOR:
1625 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1628 case MOXA_GET_CUMAJOR:
1630 if(copy_to_user(argp, &i, sizeof(int)))
1633 case MOXA_GETMSTATUS:
1634 for (i = 0; i < MAX_PORTS; i++) {
1636 GMStatus[i].dcd = 0;
1637 GMStatus[i].dsr = 0;
1638 GMStatus[i].cts = 0;
1639 if (!moxaChkPort[i]) {
1642 status = MoxaPortLineStatus(moxaChannels[i].port);
1644 GMStatus[i].cts = 1;
1646 GMStatus[i].dsr = 1;
1648 GMStatus[i].dcd = 1;
1651 if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
1652 GMStatus[i].cflag = moxaChannels[i].cflag;
1654 GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
1656 if(copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
1660 return (-ENOIOCTLCMD);
1661 case MOXA_LOAD_BIOS:
1662 case MOXA_FIND_BOARD:
1663 case MOXA_LOAD_C320B:
1664 case MOXA_LOAD_CODE:
1665 if (!capable(CAP_SYS_RAWIO))
1670 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1672 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
1677 case MOXA_LOAD_BIOS:
1678 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1680 case MOXA_FIND_BOARD:
1681 return moxafindcard(dltmp.cardno);
1682 case MOXA_LOAD_C320B:
1683 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1684 default: /* to keep gcc happy */
1686 case MOXA_LOAD_CODE:
1687 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1695 int MoxaDriverPoll(void)
1697 register ushort temp;
1699 void __iomem *ofsAddr;
1705 for (card = 0; card < MAX_BOARDS; card++) {
1706 if (loadstat[card] == 0)
1708 if ((ports = moxa_boards[card].numPorts) == 0)
1710 if (readb(moxaIntPend[card]) == 0xff) {
1711 ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
1712 p = card * MAX_PORTS_PER_BOARD;
1714 for (port = 0; port < ports; port += 2, p++) {
1715 if ((temp = readw(ip + port)) != 0) {
1716 writew(0, ip + port);
1717 ofsAddr = moxaTableAddr[p];
1719 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1720 if (temp & IntrBreak) {
1723 if (temp & IntrLine) {
1724 if (readb(ofsAddr + FlagStat) & DCD_state) {
1725 if ((moxaDCDState[p] & DCD_oldstate) == 0)
1726 moxaDCDState[p] = (DCD_oldstate |
1729 if (moxaDCDState[p] & DCD_oldstate)
1730 moxaDCDState[p] = DCD_changed;
1735 writeb(0, moxaIntPend[card]);
1737 if (moxaLowWaterChk) {
1738 p = card * MAX_PORTS_PER_BOARD;
1739 for (port = 0; port < ports; port++, p++) {
1740 if (moxaLowChkFlag[p]) {
1741 moxaLowChkFlag[p] = 0;
1742 ofsAddr = moxaTableAddr[p];
1743 low_water_check(ofsAddr);
1748 moxaLowWaterChk = 0;
1752 /*****************************************************************************
1753 * Card level function: *
1754 * 1. MoxaPortsOfCard(int cardno); *
1755 *****************************************************************************/
1756 int MoxaPortsOfCard(int cardno)
1759 if (moxa_boards[cardno].boardType == 0)
1761 return (moxa_boards[cardno].numPorts);
1764 /*****************************************************************************
1765 * Port level functions: *
1766 * 1. MoxaPortIsValid(int port); *
1767 * 2. MoxaPortEnable(int port); *
1768 * 3. MoxaPortDisable(int port); *
1769 * 4. MoxaPortGetMaxBaud(int port); *
1770 * 5. MoxaPortGetCurBaud(int port); *
1771 * 6. MoxaPortSetBaud(int port, long baud); *
1772 * 7. MoxaPortSetMode(int port, int databit, int stopbit, int parity); *
1773 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1774 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1775 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1776 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1777 * 12. MoxaPortLineStatus(int port); *
1778 * 13. MoxaPortDCDChange(int port); *
1779 * 14. MoxaPortDCDON(int port); *
1780 * 15. MoxaPortFlushData(int port, int mode); *
1781 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1782 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1783 * 18. MoxaPortTxBufSize(int port); *
1784 * 19. MoxaPortRxBufSize(int port); *
1785 * 20. MoxaPortTxQueue(int port); *
1786 * 21. MoxaPortTxFree(int port); *
1787 * 22. MoxaPortRxQueue(int port); *
1788 * 23. MoxaPortRxFree(int port); *
1789 * 24. MoxaPortTxDisable(int port); *
1790 * 25. MoxaPortTxEnable(int port); *
1791 * 26. MoxaPortGetBrkCnt(int port); *
1792 * 27. MoxaPortResetBrkCnt(int port); *
1793 * 28. MoxaPortSetXonXoff(int port, int xonValue, int xoffValue); *
1794 * 29. MoxaPortIsTxHold(int port); *
1795 * 30. MoxaPortSendBreak(int port, int ticks); *
1796 *****************************************************************************/
1798 * Moxa Port Number Description:
1800 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1801 * the port number using in MOXA driver functions will be 0 to 31 for
1802 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1803 * to 127 for fourth. For example, if you setup three MOXA boards,
1804 * first board is C218, second board is C320-16 and third board is
1805 * C320-32. The port number of first board (C218 - 8 ports) is from
1806 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1807 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1808 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1809 * 127 will be invalid.
1812 * Moxa Functions Description:
1814 * Function 1: Driver initialization routine, this routine must be
1815 * called when initialized driver.
1817 * void MoxaDriverInit();
1820 * Function 2: Moxa driver private IOCTL command processing.
1822 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1824 * unsigned int cmd : IOCTL command
1825 * unsigned long arg : IOCTL argument
1826 * int port : port number (0 - 127)
1833 * Function 3: Moxa driver polling process routine.
1835 * int MoxaDriverPoll(void);
1837 * return: 0 ; polling O.K.
1838 * -1 : no any Moxa card.
1841 * Function 4: Get the ports of this card.
1843 * int MoxaPortsOfCard(int cardno);
1845 * int cardno : card number (0 - 3)
1847 * return: 0 : this card is invalid
1851 * Function 5: Check this port is valid or invalid
1853 * int MoxaPortIsValid(int port);
1854 * int port : port number (0 - 127, ref port description)
1856 * return: 0 : this port is invalid
1857 * 1 : this port is valid
1860 * Function 6: Enable this port to start Tx/Rx data.
1862 * void MoxaPortEnable(int port);
1863 * int port : port number (0 - 127)
1866 * Function 7: Disable this port
1868 * void MoxaPortDisable(int port);
1869 * int port : port number (0 - 127)
1872 * Function 8: Get the maximun available baud rate of this port.
1874 * long MoxaPortGetMaxBaud(int port);
1875 * int port : port number (0 - 127)
1877 * return: 0 : this port is invalid
1878 * 38400/57600/115200 bps
1881 * Function 9: Get the current baud rate of this port.
1883 * long MoxaPortGetCurBaud(int port);
1884 * int port : port number (0 - 127)
1886 * return: 0 : this port is invalid
1890 * Function 10: Setting baud rate of this port.
1892 * long MoxaPortSetBaud(int port, long baud);
1893 * int port : port number (0 - 127)
1894 * long baud : baud rate (50 - 115200)
1896 * return: 0 : this port is invalid or baud < 50
1897 * 50 - 115200 : the real baud rate set to the port, if
1898 * the argument baud is large than maximun
1899 * available baud rate, the real setting
1900 * baud rate will be the maximun baud rate.
1903 * Function 11: Setting the data-bits/stop-bits/parity of this port
1905 * int MoxaPortSetMode(int port, int databits, int stopbits, int parity);
1906 * int port : port number (0 - 127)
1907 * int databits : data bits (8/7/6/5)
1908 * int stopbits : stop bits (2/1/0, 0 show 1.5 stop bits)
1909 int parity : parity (0:None,1:Odd,2:Even,3:Mark,4:Space)
1911 * return: -1 : invalid parameter
1915 * Function 12: Configure the port.
1917 * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud);
1918 * int port : port number (0 - 127)
1919 * struct ktermios * termio : termio structure pointer
1920 * speed_t baud : baud rate
1922 * return: -1 : this port is invalid or termio == NULL
1926 * Function 13: Get the DTR/RTS state of this port.
1928 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1929 * int port : port number (0 - 127)
1930 * int * dtrState : pointer to INT to receive the current DTR
1931 * state. (if NULL, this function will not
1932 * write to this address)
1933 * int * rtsState : pointer to INT to receive the current RTS
1934 * state. (if NULL, this function will not
1935 * write to this address)
1937 * return: -1 : this port is invalid
1941 * Function 14: Setting the DTR/RTS output state of this port.
1943 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1944 * int port : port number (0 - 127)
1945 * int dtrState : DTR output state (0: off, 1: on)
1946 * int rtsState : RTS output state (0: off, 1: on)
1949 * Function 15: Setting the flow control of this port.
1951 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1952 * int txFlow,int xany);
1953 * int port : port number (0 - 127)
1954 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1955 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1956 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1957 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1958 * int xany : S/W XANY flow control (0: no, 1: yes)
1961 * Function 16: Get ths line status of this port
1963 * int MoxaPortLineStatus(int port);
1964 * int port : port number (0 - 127)
1966 * return: Bit 0 - CTS state (0: off, 1: on)
1967 * Bit 1 - DSR state (0: off, 1: on)
1968 * Bit 2 - DCD state (0: off, 1: on)
1971 * Function 17: Check the DCD state has changed since the last read
1974 * int MoxaPortDCDChange(int port);
1975 * int port : port number (0 - 127)
1977 * return: 0 : no changed
1978 * 1 : DCD has changed
1981 * Function 18: Check ths current DCD state is ON or not.
1983 * int MoxaPortDCDON(int port);
1984 * int port : port number (0 - 127)
1986 * return: 0 : DCD off
1990 * Function 19: Flush the Rx/Tx buffer data of this port.
1992 * void MoxaPortFlushData(int port, int mode);
1993 * int port : port number (0 - 127)
1995 * 0 : flush the Rx buffer
1996 * 1 : flush the Tx buffer
1997 * 2 : flush the Rx and Tx buffer
2000 * Function 20: Write data.
2002 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
2003 * int port : port number (0 - 127)
2004 * unsigned char * buffer : pointer to write data buffer.
2005 * int length : write data length
2007 * return: 0 - length : real write data length
2010 * Function 21: Read data.
2012 * int MoxaPortReadData(int port, struct tty_struct *tty);
2013 * int port : port number (0 - 127)
2014 * struct tty_struct *tty : tty for data
2016 * return: 0 - length : real read data length
2019 * Function 22: Get the Tx buffer size of this port
2021 * int MoxaPortTxBufSize(int port);
2022 * int port : port number (0 - 127)
2024 * return: .. : Tx buffer size
2027 * Function 23: Get the Rx buffer size of this port
2029 * int MoxaPortRxBufSize(int port);
2030 * int port : port number (0 - 127)
2032 * return: .. : Rx buffer size
2035 * Function 24: Get the Tx buffer current queued data bytes
2037 * int MoxaPortTxQueue(int port);
2038 * int port : port number (0 - 127)
2040 * return: .. : Tx buffer current queued data bytes
2043 * Function 25: Get the Tx buffer current free space
2045 * int MoxaPortTxFree(int port);
2046 * int port : port number (0 - 127)
2048 * return: .. : Tx buffer current free space
2051 * Function 26: Get the Rx buffer current queued data bytes
2053 * int MoxaPortRxQueue(int port);
2054 * int port : port number (0 - 127)
2056 * return: .. : Rx buffer current queued data bytes
2059 * Function 27: Get the Rx buffer current free space
2061 * int MoxaPortRxFree(int port);
2062 * int port : port number (0 - 127)
2064 * return: .. : Rx buffer current free space
2067 * Function 28: Disable port data transmission.
2069 * void MoxaPortTxDisable(int port);
2070 * int port : port number (0 - 127)
2073 * Function 29: Enable port data transmission.
2075 * void MoxaPortTxEnable(int port);
2076 * int port : port number (0 - 127)
2079 * Function 30: Get the received BREAK signal count.
2081 * int MoxaPortGetBrkCnt(int port);
2082 * int port : port number (0 - 127)
2084 * return: 0 - .. : BREAK signal count
2087 * Function 31: Get the received BREAK signal count and reset it.
2089 * int MoxaPortResetBrkCnt(int port);
2090 * int port : port number (0 - 127)
2092 * return: 0 - .. : BREAK signal count
2095 * Function 32: Set the S/W flow control new XON/XOFF value, default
2096 * XON is 0x11 & XOFF is 0x13.
2098 * void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue);
2099 * int port : port number (0 - 127)
2100 * int xonValue : new XON value (0 - 255)
2101 * int xoffValue : new XOFF value (0 - 255)
2104 * Function 33: Check this port's transmission is hold by remote site
2105 * because the flow control.
2107 * int MoxaPortIsTxHold(int port);
2108 * int port : port number (0 - 127)
2110 * return: 0 : normal
2111 * 1 : hold by remote site
2114 * Function 34: Send out a BREAK signal.
2116 * void MoxaPortSendBreak(int port, int ms100);
2117 * int port : port number (0 - 127)
2118 * int ms100 : break signal time interval.
2119 * unit: 100 mini-second. if ms100 == 0, it will
2120 * send out a about 250 ms BREAK signal.
2123 int MoxaPortIsValid(int port)
2128 if (moxaChkPort[port] == 0)
2133 void MoxaPortEnable(int port)
2135 void __iomem *ofsAddr;
2136 int MoxaPortLineStatus(int);
2137 short lowwater = 512;
2139 ofsAddr = moxaTableAddr[port];
2140 writew(lowwater, ofsAddr + Low_water);
2141 moxaBreakCnt[port] = 0;
2142 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2143 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2144 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
2146 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
2149 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
2150 moxafunc(ofsAddr, FC_FlushQueue, 2);
2152 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
2153 MoxaPortLineStatus(port);
2156 void MoxaPortDisable(int port)
2158 void __iomem *ofsAddr = moxaTableAddr[port];
2160 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
2161 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
2162 writew(0, ofsAddr + HostStat);
2163 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
2166 long MoxaPortGetMaxBaud(int port)
2168 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2169 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
2176 long MoxaPortSetBaud(int port, long baud)
2178 void __iomem *ofsAddr;
2182 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
2184 ofsAddr = moxaTableAddr[port];
2188 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2189 else if (max == 57600L)
2190 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2192 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2194 moxafunc(ofsAddr, FC_SetBaud, val);
2196 moxaCurBaud[port] = baud;
2200 int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud)
2202 void __iomem *ofsAddr;
2206 if (moxaChkPort[port] == 0 || termio == 0)
2208 ofsAddr = moxaTableAddr[port];
2209 cflag = termio->c_cflag; /* termio->c_cflag */
2211 mode = termio->c_cflag & CSIZE;
2214 else if (mode == CS6)
2216 else if (mode == CS7)
2218 else if (mode == CS8)
2221 if (termio->c_cflag & CSTOPB) {
2229 if (termio->c_cflag & PARENB) {
2230 if (termio->c_cflag & PARODD)
2237 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2239 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2240 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2241 if (baud >= 921600L)
2244 MoxaPortSetBaud(port, baud);
2246 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2247 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2248 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2249 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2250 wait_finish(ofsAddr);
2256 int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2259 if (!MoxaPortIsValid(port))
2262 if (moxaLineCtrl[port] & DTR_ON)
2268 if (moxaLineCtrl[port] & RTS_ON)
2276 void MoxaPortLineCtrl(int port, int dtr, int rts)
2278 void __iomem *ofsAddr;
2281 ofsAddr = moxaTableAddr[port];
2287 moxaLineCtrl[port] = mode;
2288 moxafunc(ofsAddr, FC_LineControl, mode);
2291 void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2293 void __iomem *ofsAddr;
2296 ofsAddr = moxaTableAddr[port];
2299 mode |= RTS_FlowCtl;
2301 mode |= CTS_FlowCtl;
2308 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2311 int MoxaPortLineStatus(int port)
2313 void __iomem *ofsAddr;
2316 ofsAddr = moxaTableAddr[port];
2317 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2318 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2319 moxafunc(ofsAddr, FC_LineStatus, 0);
2320 val = readw(ofsAddr + FuncArg);
2322 val = readw(ofsAddr + FlagStat) >> 4;
2327 if ((moxaDCDState[port] & DCD_oldstate) == 0)
2328 moxaDCDState[port] = (DCD_oldstate | DCD_changed);
2330 if (moxaDCDState[port] & DCD_oldstate)
2331 moxaDCDState[port] = DCD_changed;
2337 int MoxaPortDCDChange(int port)
2341 if (moxaChkPort[port] == 0)
2343 n = moxaDCDState[port];
2344 moxaDCDState[port] &= ~DCD_changed;
2349 int MoxaPortDCDON(int port)
2353 if (moxaChkPort[port] == 0)
2355 if (moxaDCDState[port] & DCD_oldstate)
2364 int MoxaDumpMem(int port, unsigned char * buffer, int len)
2367 unsigned long baseAddr,ofsAddr,ofs;
2369 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2370 ofs = baseAddr + DynPage_addr + pageofs;
2373 for (i = 0; i < len; i++)
2374 buffer[i] = readb(ofs+i);
2379 int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2384 ushort head, tx_mask, spage, epage;
2385 ushort pageno, pageofs, bufhead;
2386 void __iomem *baseAddr, *ofsAddr, *ofs;
2388 ofsAddr = moxaTableAddr[port];
2389 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2390 tx_mask = readw(ofsAddr + TX_mask);
2391 spage = readw(ofsAddr + Page_txb);
2392 epage = readw(ofsAddr + EndPage_txb);
2393 tail = readw(ofsAddr + TXwptr);
2394 head = readw(ofsAddr + TXrptr);
2395 c = (head > tail) ? (head - tail - 1)
2396 : (head - tail + tx_mask);
2399 moxaLog.txcnt[port] += c;
2401 if (spage == epage) {
2402 bufhead = readw(ofsAddr + Ofs_txb);
2403 writew(spage, baseAddr + Control_reg);
2406 len = head - tail - 1;
2408 len = tx_mask + 1 - tail;
2409 len = (c > len) ? len : c;
2410 ofs = baseAddr + DynPage_addr + bufhead + tail;
2411 for (i = 0; i < len; i++)
2412 writeb(*buffer++, ofs + i);
2413 tail = (tail + len) & tx_mask;
2416 writew(tail, ofsAddr + TXwptr);
2419 pageno = spage + (tail >> 13);
2420 pageofs = tail & Page_mask;
2422 cnt = Page_size - pageofs;
2426 writeb(pageno, baseAddr + Control_reg);
2427 ofs = baseAddr + DynPage_addr + pageofs;
2428 for (i = 0; i < cnt; i++)
2429 writeb(*buffer++, ofs + i);
2431 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2434 if (++pageno == epage)
2439 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2443 int MoxaPortReadData(int port, struct tty_struct *tty)
2445 register ushort head, pageofs;
2446 int i, count, cnt, len, total, remain;
2447 ushort tail, rx_mask, spage, epage;
2448 ushort pageno, bufhead;
2449 void __iomem *baseAddr, *ofsAddr, *ofs;
2451 ofsAddr = moxaTableAddr[port];
2452 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2453 head = readw(ofsAddr + RXrptr);
2454 tail = readw(ofsAddr + RXwptr);
2455 rx_mask = readw(ofsAddr + RX_mask);
2456 spage = readw(ofsAddr + Page_rxb);
2457 epage = readw(ofsAddr + EndPage_rxb);
2458 count = (tail >= head) ? (tail - head)
2459 : (tail - head + rx_mask + 1);
2464 remain = count - total;
2465 moxaLog.rxcnt[port] += total;
2467 if (spage == epage) {
2468 bufhead = readw(ofsAddr + Ofs_rxb);
2469 writew(spage, baseAddr + Control_reg);
2474 len = rx_mask + 1 - head;
2475 len = (count > len) ? len : count;
2476 ofs = baseAddr + DynPage_addr + bufhead + head;
2477 for (i = 0; i < len; i++)
2478 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2479 head = (head + len) & rx_mask;
2482 writew(head, ofsAddr + RXrptr);
2485 pageno = spage + (head >> 13);
2486 pageofs = head & Page_mask;
2488 cnt = Page_size - pageofs;
2492 writew(pageno, baseAddr + Control_reg);
2493 ofs = baseAddr + DynPage_addr + pageofs;
2494 for (i = 0; i < cnt; i++)
2495 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2497 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2500 if (++pageno == epage)
2505 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2506 moxaLowWaterChk = 1;
2507 moxaLowChkFlag[port] = 1;
2513 int MoxaPortTxQueue(int port)
2515 void __iomem *ofsAddr;
2516 ushort rptr, wptr, mask;
2519 ofsAddr = moxaTableAddr[port];
2520 rptr = readw(ofsAddr + TXrptr);
2521 wptr = readw(ofsAddr + TXwptr);
2522 mask = readw(ofsAddr + TX_mask);
2523 len = (wptr - rptr) & mask;
2527 int MoxaPortTxFree(int port)
2529 void __iomem *ofsAddr;
2530 ushort rptr, wptr, mask;
2533 ofsAddr = moxaTableAddr[port];
2534 rptr = readw(ofsAddr + TXrptr);
2535 wptr = readw(ofsAddr + TXwptr);
2536 mask = readw(ofsAddr + TX_mask);
2537 len = mask - ((wptr - rptr) & mask);
2541 int MoxaPortRxQueue(int port)
2543 void __iomem *ofsAddr;
2544 ushort rptr, wptr, mask;
2547 ofsAddr = moxaTableAddr[port];
2548 rptr = readw(ofsAddr + RXrptr);
2549 wptr = readw(ofsAddr + RXwptr);
2550 mask = readw(ofsAddr + RX_mask);
2551 len = (wptr - rptr) & mask;
2556 void MoxaPortTxDisable(int port)
2558 void __iomem *ofsAddr;
2560 ofsAddr = moxaTableAddr[port];
2561 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2564 void MoxaPortTxEnable(int port)
2566 void __iomem *ofsAddr;
2568 ofsAddr = moxaTableAddr[port];
2569 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2573 int MoxaPortResetBrkCnt(int port)
2576 cnt = moxaBreakCnt[port];
2577 moxaBreakCnt[port] = 0;
2582 void MoxaPortSendBreak(int port, int ms100)
2584 void __iomem *ofsAddr;
2586 ofsAddr = moxaTableAddr[port];
2588 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2589 moxadelay(ms100 * (HZ / 10));
2591 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2592 moxadelay(HZ / 4); /* 250 ms */
2594 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2597 static int moxa_get_serial_info(struct moxa_str *info,
2598 struct serial_struct __user *retinfo)
2600 struct serial_struct tmp;
2602 memset(&tmp, 0, sizeof(tmp));
2603 tmp.type = info->type;
2604 tmp.line = info->port;
2607 tmp.flags = info->asyncflags;
2608 tmp.baud_base = 921600;
2609 tmp.close_delay = info->close_delay;
2610 tmp.closing_wait = info->closing_wait;
2611 tmp.custom_divisor = 0;
2613 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2619 static int moxa_set_serial_info(struct moxa_str *info,
2620 struct serial_struct __user *new_info)
2622 struct serial_struct new_serial;
2624 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2627 if ((new_serial.irq != 0) ||
2628 (new_serial.port != 0) ||
2629 // (new_serial.type != info->type) ||
2630 (new_serial.custom_divisor != 0) ||
2631 (new_serial.baud_base != 921600))
2634 if (!capable(CAP_SYS_ADMIN)) {
2635 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2636 (info->asyncflags & ~ASYNC_USR_MASK)))
2639 info->close_delay = new_serial.close_delay * HZ / 100;
2640 info->closing_wait = new_serial.closing_wait * HZ / 100;
2643 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2644 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2646 if (new_serial.type == PORT_16550A) {
2647 MoxaSetFifo(info->port, 1);
2649 MoxaSetFifo(info->port, 0);
2652 info->type = new_serial.type;
2658 /*****************************************************************************
2659 * Static local functions: *
2660 *****************************************************************************/
2662 * moxadelay - delays a specified number ticks
2664 static void moxadelay(int tick)
2666 unsigned long st, et;
2670 while (time_before(jiffies, et));
2673 static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
2676 writew(arg, ofsAddr + FuncArg);
2677 writew(cmd, ofsAddr + FuncCode);
2678 wait_finish(ofsAddr);
2681 static void wait_finish(void __iomem *ofsAddr)
2686 while (readw(ofsAddr + FuncCode) != 0) {
2688 if ((j - i) > moxaFuncTout) {
2694 static void low_water_check(void __iomem *ofsAddr)
2697 ushort rptr, wptr, mask;
2699 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2700 rptr = readw(ofsAddr + RXrptr);
2701 wptr = readw(ofsAddr + RXwptr);
2702 mask = readw(ofsAddr + RX_mask);
2703 len = (wptr - rptr) & mask;
2704 if (len <= Low_water)
2705 moxafunc(ofsAddr, FC_SendXon, 0);
2709 static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2711 void __iomem *baseAddr;
2714 if(copy_from_user(moxaBuff, tmp, len))
2716 baseAddr = moxaBaseAddr[cardno];
2717 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2718 moxadelay(1); /* delay 10 ms */
2719 for (i = 0; i < 4096; i++)
2720 writeb(0, baseAddr + i); /* clear fix page */
2721 for (i = 0; i < len; i++)
2722 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2723 writeb(0, baseAddr + Control_reg); /* restart */
2727 static int moxafindcard(int cardno)
2729 void __iomem *baseAddr;
2732 baseAddr = moxaBaseAddr[cardno];
2733 switch (moxa_boards[cardno].boardType) {
2734 case MOXA_BOARD_C218_ISA:
2735 case MOXA_BOARD_C218_PCI:
2736 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2740 case MOXA_BOARD_CP204J:
2741 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2746 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2749 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2756 static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2758 void __iomem *baseAddr;
2761 if(len > sizeof(moxaBuff))
2763 if(copy_from_user(moxaBuff, tmp, len))
2765 baseAddr = moxaBaseAddr[cardno];
2766 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2767 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2768 for (i = 0; i < 7168; i++)
2769 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2770 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2771 for (i = 0; i < (len - 7168); i++)
2772 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2776 static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2778 void __iomem *baseAddr, *ofsAddr;
2779 int retval, port, i;
2781 if(copy_from_user(moxaBuff, tmp, len))
2783 baseAddr = moxaBaseAddr[cardno];
2784 switch (moxa_boards[cardno].boardType) {
2785 case MOXA_BOARD_C218_ISA:
2786 case MOXA_BOARD_C218_PCI:
2787 case MOXA_BOARD_CP204J:
2788 retval = moxaloadc218(cardno, baseAddr, len);
2791 port = cardno * MAX_PORTS_PER_BOARD;
2792 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2793 moxaChkPort[port] = 1;
2794 moxaCurBaud[port] = 9600L;
2795 moxaDCDState[port] = 0;
2796 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2797 ofsAddr = moxaTableAddr[port];
2798 writew(C218rx_mask, ofsAddr + RX_mask);
2799 writew(C218tx_mask, ofsAddr + TX_mask);
2800 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2801 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2803 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2804 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2809 retval = moxaloadc320(cardno, baseAddr, len,
2810 &moxa_boards[cardno].numPorts);
2813 port = cardno * MAX_PORTS_PER_BOARD;
2814 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2815 moxaChkPort[port] = 1;
2816 moxaCurBaud[port] = 9600L;
2817 moxaDCDState[port] = 0;
2818 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2819 ofsAddr = moxaTableAddr[port];
2820 if (moxa_boards[cardno].numPorts == 8) {
2821 writew(C320p8rx_mask, ofsAddr + RX_mask);
2822 writew(C320p8tx_mask, ofsAddr + TX_mask);
2823 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2824 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2825 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2826 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2828 } else if (moxa_boards[cardno].numPorts == 16) {
2829 writew(C320p16rx_mask, ofsAddr + RX_mask);
2830 writew(C320p16tx_mask, ofsAddr + TX_mask);
2831 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2832 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2833 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2834 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2836 } else if (moxa_boards[cardno].numPorts == 24) {
2837 writew(C320p24rx_mask, ofsAddr + RX_mask);
2838 writew(C320p24tx_mask, ofsAddr + TX_mask);
2839 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2840 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2841 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2842 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2843 } else if (moxa_boards[cardno].numPorts == 32) {
2844 writew(C320p32rx_mask, ofsAddr + RX_mask);
2845 writew(C320p32tx_mask, ofsAddr + TX_mask);
2846 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2847 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2848 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2849 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2850 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2855 loadstat[cardno] = 1;
2859 static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
2862 int i, j, len1, len2;
2863 ushort usum, *ptr, keycode;
2865 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2866 keycode = CP204J_KeyCode;
2868 keycode = C218_KeyCode;
2871 ptr = (ushort *) moxaBuff;
2872 for (i = 0; i < len1; i++)
2873 usum += le16_to_cpu(*(ptr + i));
2879 len2 = (len1 > 2048) ? 2048 : len1;
2881 for (i = 0; i < len2 << 1; i++)
2882 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2885 writew(len2, baseAddr + C218DLoad_len);
2886 writew(0, baseAddr + C218_key);
2887 for (i = 0; i < 100; i++) {
2888 if (readw(baseAddr + C218_key) == keycode)
2890 moxadelay(1); /* delay 10 ms */
2892 if (readw(baseAddr + C218_key) != keycode) {
2896 writew(0, baseAddr + C218DLoad_len);
2897 writew(usum, baseAddr + C218check_sum);
2898 writew(0, baseAddr + C218_key);
2899 for (i = 0; i < 100; i++) {
2900 if (readw(baseAddr + C218_key) == keycode)
2902 moxadelay(1); /* delay 10 ms */
2905 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2906 if (readb(baseAddr + C218chksum_ok) != 1) {
2909 writew(0, baseAddr + C218_key);
2910 for (i = 0; i < 100; i++) {
2911 if (readw(baseAddr + Magic_no) == Magic_code)
2913 moxadelay(1); /* delay 10 ms */
2915 if (readw(baseAddr + Magic_no) != Magic_code) {
2918 writew(1, baseAddr + Disable_IRQ);
2919 writew(0, baseAddr + Magic_no);
2920 for (i = 0; i < 100; i++) {
2921 if (readw(baseAddr + Magic_no) == Magic_code)
2923 moxadelay(1); /* delay 10 ms */
2925 if (readw(baseAddr + Magic_no) != Magic_code) {
2929 moxaIntNdx[cardno] = baseAddr + IRQindex;
2930 moxaIntPend[cardno] = baseAddr + IRQpending;
2931 moxaIntTable[cardno] = baseAddr + IRQtable;
2935 static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
2938 int i, j, wlen, len2, retry;
2943 uptr = (ushort *) moxaBuff;
2944 for (i = 0; i < wlen; i++)
2945 usum += le16_to_cpu(uptr[i]);
2956 for (i = 0; i < len2; i++)
2957 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
2960 writew(len2, baseAddr + C320DLoad_len);
2961 writew(0, baseAddr + C320_key);
2962 for (i = 0; i < 10; i++) {
2963 if (readw(baseAddr + C320_key) == C320_KeyCode)
2967 if (readw(baseAddr + C320_key) != C320_KeyCode)
2970 writew(0, baseAddr + C320DLoad_len);
2971 writew(usum, baseAddr + C320check_sum);
2972 writew(0, baseAddr + C320_key);
2973 for (i = 0; i < 10; i++) {
2974 if (readw(baseAddr + C320_key) == C320_KeyCode)
2979 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
2980 if (readb(baseAddr + C320chksum_ok) != 1)
2982 writew(0, baseAddr + C320_key);
2983 for (i = 0; i < 600; i++) {
2984 if (readw(baseAddr + Magic_no) == Magic_code)
2988 if (readw(baseAddr + Magic_no) != Magic_code)
2991 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
2992 writew(0x3800, baseAddr + TMS320_PORT1);
2993 writew(0x3900, baseAddr + TMS320_PORT2);
2994 writew(28499, baseAddr + TMS320_CLOCK);
2996 writew(0x3200, baseAddr + TMS320_PORT1);
2997 writew(0x3400, baseAddr + TMS320_PORT2);
2998 writew(19999, baseAddr + TMS320_CLOCK);
3000 writew(1, baseAddr + Disable_IRQ);
3001 writew(0, baseAddr + Magic_no);
3002 for (i = 0; i < 500; i++) {
3003 if (readw(baseAddr + Magic_no) == Magic_code)
3007 if (readw(baseAddr + Magic_no) != Magic_code)
3010 j = readw(baseAddr + Module_cnt);
3014 writew(j, baseAddr + Module_no);
3015 writew(0, baseAddr + Magic_no);
3016 for (i = 0; i < 600; i++) {
3017 if (readw(baseAddr + Magic_no) == Magic_code)
3021 if (readw(baseAddr + Magic_no) != Magic_code)
3024 moxaIntNdx[cardno] = baseAddr + IRQindex;
3025 moxaIntPend[cardno] = baseAddr + IRQpending;
3026 moxaIntTable[cardno] = baseAddr + IRQtable;
3031 long MoxaPortGetCurBaud(int port)
3034 if (moxaChkPort[port] == 0)
3036 return (moxaCurBaud[port]);
3040 static void MoxaSetFifo(int port, int enable)
3042 void __iomem *ofsAddr = moxaTableAddr[port];
3045 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
3046 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
3048 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
3049 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
3054 int MoxaPortSetMode(int port, int databits, int stopbits, int parity)
3056 void __iomem *ofsAddr;
3079 break; /* stop bits 1.5 */
3108 ofsAddr = moxaTableAddr[port];
3109 moxafunc(ofsAddr, FC_SetMode, val);
3113 int MoxaPortTxBufSize(int port)
3115 void __iomem *ofsAddr;
3118 ofsAddr = moxaTableAddr[port];
3119 size = readw(ofsAddr + TX_mask);
3123 int MoxaPortRxBufSize(int port)
3125 void __iomem *ofsAddr;
3128 ofsAddr = moxaTableAddr[port];
3129 size = readw(ofsAddr + RX_mask);
3133 int MoxaPortRxFree(int port)
3135 void __iomem *ofsAddr;
3136 ushort rptr, wptr, mask;
3139 ofsAddr = moxaTableAddr[port];
3140 rptr = readw(ofsAddr + RXrptr);
3141 wptr = readw(ofsAddr + RXwptr);
3142 mask = readw(ofsAddr + RX_mask);
3143 len = mask - ((wptr - rptr) & mask);
3146 int MoxaPortGetBrkCnt(int port)
3148 return (moxaBreakCnt[port]);
3151 void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue)
3153 void __iomem *ofsAddr;
3155 ofsAddr = moxaTableAddr[port];
3156 writew(xonValue, ofsAddr + FuncArg);
3157 writew(xoffValue, ofsAddr + FuncArg1);
3158 writew(FC_SetXonXoff, ofsAddr + FuncCode);
3159 wait_finish(ofsAddr);
3162 int MoxaPortIsTxHold(int port)
3164 void __iomem *ofsAddr;
3167 ofsAddr = moxaTableAddr[port];
3168 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
3169 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
3170 moxafunc(ofsAddr, FC_GetCCSR, 0);
3171 val = readw(ofsAddr + FuncArg);
3175 if (readw(ofsAddr + FlagStat) & Tx_flowOff)