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(void *);
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 termios *);
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 termios *, 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->flags = TTY_DRIVER_REAL_RAW;
359 tty_set_operations(moxaDriver, &moxa_ops);
363 for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) {
364 ch->type = PORT_16550A;
366 INIT_WORK(&ch->tqueue, do_moxa_softint, ch);
368 ch->close_delay = 5 * HZ / 10;
369 ch->closing_wait = 30 * HZ;
371 ch->blocked_open = 0;
372 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
373 init_waitqueue_head(&ch->open_wait);
374 init_waitqueue_head(&ch->close_wait);
377 for (i = 0; i < MAX_BOARDS; i++) {
378 moxa_boards[i].boardType = 0;
379 moxa_boards[i].numPorts = 0;
380 moxa_boards[i].baseAddr = 0;
381 moxa_boards[i].busType = 0;
382 moxa_boards[i].pciInfo.busNum = 0;
383 moxa_boards[i].pciInfo.devNum = 0;
386 printk("Tty devices major number = %d\n", ttymajor);
388 if (tty_register_driver(moxaDriver)) {
389 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
390 put_tty_driver(moxaDriver);
393 for (i = 0; i < MAX_PORTS; i++) {
394 init_timer(&moxaEmptyTimer[i]);
395 moxaEmptyTimer[i].function = check_xmit_empty;
396 moxaEmptyTimer[i].data = (unsigned long) & moxaChannels[i];
397 moxaEmptyTimer_on[i] = 0;
400 init_timer(&moxaTimer);
401 moxaTimer.function = moxa_poll;
402 moxaTimer.expires = jiffies + (HZ / 50);
404 add_timer(&moxaTimer);
406 /* Find the boards defined in source code */
408 for (i = 0; i < MAX_BOARDS; i++) {
409 if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) ||
410 (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) {
411 moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType;
412 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
413 moxa_boards[numBoards].numPorts = 8;
415 moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts;
416 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
417 moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr;
419 printk("Board %2d: %s board(baseAddr=%lx)\n",
421 moxa_brdname[moxa_boards[numBoards].boardType - 1],
422 moxa_boards[numBoards].baseAddr);
426 /* Find the boards defined form module args. */
428 for (i = 0; i < MAX_BOARDS; i++) {
429 if ((type[i] == MOXA_BOARD_C218_ISA) ||
430 (type[i] == MOXA_BOARD_C320_ISA)) {
432 printk("Board %2d: %s board(baseAddr=%lx)\n",
434 moxa_brdname[type[i] - 1],
435 (unsigned long) baseaddr[i]);
436 if (numBoards >= MAX_BOARDS) {
438 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
441 moxa_boards[numBoards].boardType = type[i];
442 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
443 moxa_boards[numBoards].numPorts = 8;
445 moxa_boards[numBoards].numPorts = numports[i];
446 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
447 moxa_boards[numBoards].baseAddr = baseaddr[i];
452 /* Find PCI boards here */
455 struct pci_dev *p = NULL;
456 int n = ARRAY_SIZE(moxa_pcibrds) - 1;
459 while ((p = pci_get_device(moxa_pcibrds[i].vendor, moxa_pcibrds[i].device, p))!=NULL)
461 if (pci_enable_device(p))
463 if (numBoards >= MAX_BOARDS) {
465 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
467 moxa_get_PCI_conf(p, moxa_pcibrds[i].driver_data,
468 &moxa_boards[numBoards]);
476 for (i = 0; i < numBoards; i++) {
477 moxaBaseAddr[i] = ioremap((unsigned long) moxa_boards[i].baseAddr, 0x4000);
483 static void __exit moxa_exit(void)
488 printk("Unloading module moxa ...\n");
491 del_timer(&moxaTimer);
493 for (i = 0; i < MAX_PORTS; i++)
494 if (moxaEmptyTimer_on[i])
495 del_timer(&moxaEmptyTimer[i]);
497 if (tty_unregister_driver(moxaDriver))
498 printk("Couldn't unregister MOXA Intellio family serial driver\n");
499 put_tty_driver(moxaDriver);
501 for (i = 0; i < MAX_BOARDS; i++)
502 if (moxa_boards[i].busType == MOXA_BUS_TYPE_PCI)
503 pci_dev_put(moxa_boards[i].pciInfo.pdev);
509 module_init(moxa_init);
510 module_exit(moxa_exit);
512 static void do_moxa_softint(void *private_)
514 struct moxa_str *ch = (struct moxa_str *) private_;
515 struct tty_struct *tty;
517 if (ch && (tty = ch->tty)) {
518 if (test_and_clear_bit(MOXA_EVENT_HANGUP, &ch->event)) {
519 tty_hangup(tty); /* FIXME: module removal race here - AKPM */
520 wake_up_interruptible(&ch->open_wait);
521 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
526 static int moxa_open(struct tty_struct *tty, struct file *filp)
534 if (port == MAX_PORTS) {
537 if (!MoxaPortIsValid(port)) {
538 tty->driver_data = NULL;
543 page = get_zeroed_page(GFP_KERNEL);
548 /* This test is guarded by the BuffSem so no longer needed
553 moxaXmitBuff = (unsigned char *) page;
557 ch = &moxaChannels[port];
559 tty->driver_data = ch;
561 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
564 MoxaPortLineCtrl(ch->port, 1, 1);
565 MoxaPortEnable(ch->port);
566 ch->asyncflags |= ASYNC_INITIALIZED;
568 retval = block_till_ready(tty, filp, ch);
570 moxa_unthrottle(tty);
572 if (ch->type == PORT_16550A) {
573 MoxaSetFifo(ch->port, 1);
575 MoxaSetFifo(ch->port, 0);
581 static void moxa_close(struct tty_struct *tty, struct file *filp)
587 if (port == MAX_PORTS) {
590 if (!MoxaPortIsValid(port)) {
591 #ifdef SERIAL_DEBUG_CLOSE
592 printk("Invalid portno in moxa_close\n");
594 tty->driver_data = NULL;
597 if (tty->driver_data == NULL) {
600 if (tty_hung_up_p(filp)) {
603 ch = (struct moxa_str *) tty->driver_data;
605 if ((tty->count == 1) && (ch->count != 1)) {
606 printk("moxa_close: bad serial port count; tty->count is 1, "
607 "ch->count is %d\n", ch->count);
610 if (--ch->count < 0) {
611 printk("moxa_close: bad serial port count, device=%s\n",
618 ch->asyncflags |= ASYNC_CLOSING;
620 ch->cflag = tty->termios->c_cflag;
621 if (ch->asyncflags & ASYNC_INITIALIZED) {
622 setup_empty_event(tty);
623 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
624 moxaEmptyTimer_on[ch->port] = 0;
625 del_timer(&moxaEmptyTimer[ch->port]);
628 MoxaPortFlushData(port, 2);
630 if (tty->driver->flush_buffer)
631 tty->driver->flush_buffer(tty);
632 tty_ldisc_flush(tty);
637 if (ch->blocked_open) {
638 if (ch->close_delay) {
639 msleep_interruptible(jiffies_to_msecs(ch->close_delay));
641 wake_up_interruptible(&ch->open_wait);
643 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
644 wake_up_interruptible(&ch->close_wait);
647 static int moxa_write(struct tty_struct *tty,
648 const unsigned char *buf, int count)
654 ch = (struct moxa_str *) tty->driver_data;
659 spin_lock_irqsave(&moxa_lock, flags);
660 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
661 spin_unlock_irqrestore(&moxa_lock, flags);
663 /*********************************************
664 if ( !(ch->statusflags & LOWWAIT) &&
665 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
666 ************************************************/
667 ch->statusflags |= LOWWAIT;
671 static int moxa_write_room(struct tty_struct *tty)
677 ch = (struct moxa_str *) tty->driver_data;
680 return (MoxaPortTxFree(ch->port));
683 static void moxa_flush_buffer(struct tty_struct *tty)
685 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
689 MoxaPortFlushData(ch->port, 1);
693 static int moxa_chars_in_buffer(struct tty_struct *tty)
696 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
699 * Sigh...I have to check if driver_data is NULL here, because
700 * if an open() fails, the TTY subsystem eventually calls
701 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
702 * routine. And since the open() failed, we return 0 here. TDJ
706 chars = MoxaPortTxQueue(ch->port);
709 * Make it possible to wakeup anything waiting for output
710 * in tty_ioctl.c, etc.
712 if (!(ch->statusflags & EMPTYWAIT))
713 setup_empty_event(tty);
718 static void moxa_flush_chars(struct tty_struct *tty)
721 * Don't think I need this, because this is called to empty the TX
722 * buffer for the 16450, 16550, etc.
726 static void moxa_put_char(struct tty_struct *tty, unsigned char c)
732 ch = (struct moxa_str *) tty->driver_data;
736 spin_lock_irqsave(&moxa_lock, flags);
738 MoxaPortWriteData(port, moxaXmitBuff, 1);
739 spin_unlock_irqrestore(&moxa_lock, flags);
740 /************************************************
741 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
742 *************************************************/
743 ch->statusflags |= LOWWAIT;
746 static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
748 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
750 int flag = 0, dtr, rts;
753 if ((port != MAX_PORTS) && (!ch))
756 MoxaPortGetLineOut(ch->port, &dtr, &rts);
761 dtr = MoxaPortLineStatus(ch->port);
771 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
772 unsigned int set, unsigned int clear)
774 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
779 if ((port != MAX_PORTS) && (!ch))
782 MoxaPortGetLineOut(ch->port, &dtr, &rts);
787 if (clear & TIOCM_RTS)
789 if (clear & TIOCM_DTR)
791 MoxaPortLineCtrl(ch->port, dtr, rts);
795 static int moxa_ioctl(struct tty_struct *tty, struct file *file,
796 unsigned int cmd, unsigned long arg)
798 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
800 void __user *argp = (void __user *)arg;
804 if ((port != MAX_PORTS) && (!ch))
808 case TCSBRK: /* SVID version: non-zero arg --> no break */
809 retval = tty_check_change(tty);
812 setup_empty_event(tty);
813 tty_wait_until_sent(tty, 0);
815 MoxaPortSendBreak(ch->port, 0);
817 case TCSBRKP: /* support for POSIX tcsendbreak() */
818 retval = tty_check_change(tty);
821 setup_empty_event(tty);
822 tty_wait_until_sent(tty, 0);
823 MoxaPortSendBreak(ch->port, arg);
826 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
828 if(get_user(retval, (unsigned long __user *) argp))
831 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
834 ch->asyncflags &= ~ASYNC_CHECK_CD;
836 ch->asyncflags |= ASYNC_CHECK_CD;
839 return moxa_get_serial_info(ch, argp);
842 return moxa_set_serial_info(ch, argp);
844 retval = MoxaDriverIoctl(cmd, arg, port);
849 static void moxa_throttle(struct tty_struct *tty)
851 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
853 ch->statusflags |= THROTTLE;
856 static void moxa_unthrottle(struct tty_struct *tty)
858 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
860 ch->statusflags &= ~THROTTLE;
863 static void moxa_set_termios(struct tty_struct *tty,
864 struct termios *old_termios)
866 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
871 if (!(old_termios->c_cflag & CLOCAL) &&
872 (tty->termios->c_cflag & CLOCAL))
873 wake_up_interruptible(&ch->open_wait);
876 static void moxa_stop(struct tty_struct *tty)
878 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
882 MoxaPortTxDisable(ch->port);
883 ch->statusflags |= TXSTOPPED;
887 static void moxa_start(struct tty_struct *tty)
889 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
894 if (!(ch->statusflags & TXSTOPPED))
897 MoxaPortTxEnable(ch->port);
898 ch->statusflags &= ~TXSTOPPED;
901 static void moxa_hangup(struct tty_struct *tty)
903 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
905 moxa_flush_buffer(tty);
909 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
911 wake_up_interruptible(&ch->open_wait);
914 static void moxa_poll(unsigned long ignored)
918 struct tty_struct *tp;
922 del_timer(&moxaTimer);
924 if (MoxaDriverPoll() < 0) {
925 moxaTimer.function = moxa_poll;
926 moxaTimer.expires = jiffies + (HZ / 50);
928 add_timer(&moxaTimer);
931 for (card = 0; card < MAX_BOARDS; card++) {
932 if ((ports = MoxaPortsOfCard(card)) <= 0)
934 ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
935 for (i = 0; i < ports; i++, ch++) {
936 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
938 if (!(ch->statusflags & THROTTLE) &&
939 (MoxaPortRxQueue(ch->port) > 0))
941 if ((tp = ch->tty) == 0)
943 if (ch->statusflags & LOWWAIT) {
944 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
946 ch->statusflags &= ~LOWWAIT;
951 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
952 tty_insert_flip_char(tp, 0, TTY_BREAK);
953 tty_schedule_flip(tp);
955 if (MoxaPortDCDChange(ch->port)) {
956 if (ch->asyncflags & ASYNC_CHECK_CD) {
957 if (MoxaPortDCDON(ch->port))
958 wake_up_interruptible(&ch->open_wait);
960 set_bit(MOXA_EVENT_HANGUP, &ch->event);
961 schedule_work(&ch->tqueue);
968 moxaTimer.function = moxa_poll;
969 moxaTimer.expires = jiffies + (HZ / 50);
971 add_timer(&moxaTimer);
974 /******************************************************************************/
976 static void set_tty_param(struct tty_struct *tty)
978 register struct termios *ts;
980 int rts, cts, txflow, rxflow, xany;
982 ch = (struct moxa_str *) tty->driver_data;
984 if (ts->c_cflag & CLOCAL)
985 ch->asyncflags &= ~ASYNC_CHECK_CD;
987 ch->asyncflags |= ASYNC_CHECK_CD;
988 rts = cts = txflow = rxflow = xany = 0;
989 if (ts->c_cflag & CRTSCTS)
991 if (ts->c_iflag & IXON)
993 if (ts->c_iflag & IXOFF)
995 if (ts->c_iflag & IXANY)
997 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
998 MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty));
1001 static int block_till_ready(struct tty_struct *tty, struct file *filp,
1002 struct moxa_str *ch)
1004 DECLARE_WAITQUEUE(wait,current);
1005 unsigned long flags;
1007 int do_clocal = C_CLOCAL(tty);
1010 * If the device is in the middle of being closed, then block
1011 * until it's done, and then try again.
1013 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
1014 if (ch->asyncflags & ASYNC_CLOSING)
1015 interruptible_sleep_on(&ch->close_wait);
1016 #ifdef SERIAL_DO_RESTART
1017 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1020 return (-ERESTARTSYS);
1026 * If non-blocking mode is set, then make the check up front
1029 if (filp->f_flags & O_NONBLOCK) {
1030 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1034 * Block waiting for the carrier detect and the line to become free
1037 add_wait_queue(&ch->open_wait, &wait);
1038 #ifdef SERIAL_DEBUG_OPEN
1039 printk("block_til_ready before block: ttys%d, count = %d\n",
1040 ch->line, ch->count);
1042 spin_lock_irqsave(&moxa_lock, flags);
1043 if (!tty_hung_up_p(filp))
1046 spin_unlock_irqrestore(&moxa_lock, flags);
1049 set_current_state(TASK_INTERRUPTIBLE);
1050 if (tty_hung_up_p(filp) ||
1051 !(ch->asyncflags & ASYNC_INITIALIZED)) {
1052 #ifdef SERIAL_DO_RESTART
1053 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1056 retval = -ERESTARTSYS;
1062 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
1063 MoxaPortDCDON(ch->port)))
1066 if (signal_pending(current)) {
1067 retval = -ERESTARTSYS;
1072 set_current_state(TASK_RUNNING);
1073 remove_wait_queue(&ch->open_wait, &wait);
1075 spin_lock_irqsave(&moxa_lock, flags);
1076 if (!tty_hung_up_p(filp))
1079 spin_unlock_irqrestore(&moxa_lock, flags);
1080 #ifdef SERIAL_DEBUG_OPEN
1081 printk("block_til_ready after blocking: ttys%d, count = %d\n",
1082 ch->line, ch->count);
1086 /* FIXME: review to see if we need to use set_bit on these */
1087 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1091 static void setup_empty_event(struct tty_struct *tty)
1093 struct moxa_str *ch = tty->driver_data;
1094 unsigned long flags;
1096 spin_lock_irqsave(&moxa_lock, flags);
1097 ch->statusflags |= EMPTYWAIT;
1098 moxaEmptyTimer_on[ch->port] = 0;
1099 del_timer(&moxaEmptyTimer[ch->port]);
1100 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1101 moxaEmptyTimer_on[ch->port] = 1;
1102 add_timer(&moxaEmptyTimer[ch->port]);
1103 spin_unlock_irqrestore(&moxa_lock, flags);
1106 static void check_xmit_empty(unsigned long data)
1108 struct moxa_str *ch;
1110 ch = (struct moxa_str *) data;
1111 moxaEmptyTimer_on[ch->port] = 0;
1112 del_timer(&moxaEmptyTimer[ch->port]);
1113 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1114 if (MoxaPortTxQueue(ch->port) == 0) {
1115 ch->statusflags &= ~EMPTYWAIT;
1116 tty_wakeup(ch->tty);
1119 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1120 moxaEmptyTimer_on[ch->port] = 1;
1121 add_timer(&moxaEmptyTimer[ch->port]);
1123 ch->statusflags &= ~EMPTYWAIT;
1126 static void shut_down(struct moxa_str *ch)
1128 struct tty_struct *tp;
1130 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1135 MoxaPortDisable(ch->port);
1138 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1140 if (tp->termios->c_cflag & HUPCL)
1141 MoxaPortLineCtrl(ch->port, 0, 0);
1143 ch->asyncflags &= ~ASYNC_INITIALIZED;
1146 static void receive_data(struct moxa_str *ch)
1148 struct tty_struct *tp;
1150 unsigned long flags;
1156 /**************************************************
1157 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1158 *****************************************************/
1160 MoxaPortFlushData(ch->port, 0);
1163 spin_lock_irqsave(&moxa_lock, flags);
1164 MoxaPortReadData(ch->port, tp);
1165 spin_unlock_irqrestore(&moxa_lock, flags);
1166 tty_schedule_flip(tp);
1169 #define Magic_code 0x404
1172 * System Configuration
1175 * for C218 BIOS initialization
1177 #define C218_ConfBase 0x800
1178 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1179 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1180 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1181 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1182 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1183 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1184 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1185 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1186 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1187 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1189 #define C218_LoadBuf 0x0F00
1190 #define C218_KeyCode 0x218
1191 #define CP204J_KeyCode 0x204
1194 * for C320 BIOS initialization
1196 #define C320_ConfBase 0x800
1197 #define C320_LoadBuf 0x0f00
1198 #define STS_init 0x05 /* for C320_status */
1200 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1201 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1202 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1203 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1204 #define C320check_sum C320_ConfBase + 8 /* WORD */
1205 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1206 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1207 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1209 #define C320_KeyCode 0x320
1211 #define FixPage_addr 0x0000 /* starting addr of static page */
1212 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1213 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1214 #define Control_reg 0x1ff0 /* select page and reset control */
1215 #define HW_reset 0x80
1220 #define FC_CardReset 0x80
1221 #define FC_ChannelReset 1 /* C320 firmware not supported */
1222 #define FC_EnableCH 2
1223 #define FC_DisableCH 3
1224 #define FC_SetParam 4
1225 #define FC_SetMode 5
1226 #define FC_SetRate 6
1227 #define FC_LineControl 7
1228 #define FC_LineStatus 8
1229 #define FC_XmitControl 9
1230 #define FC_FlushQueue 10
1231 #define FC_SendBreak 11
1232 #define FC_StopBreak 12
1233 #define FC_LoopbackON 13
1234 #define FC_LoopbackOFF 14
1235 #define FC_ClrIrqTable 15
1236 #define FC_SendXon 16
1237 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1238 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1239 #define FC_SetBreakIrq 19
1240 #define FC_SetLineIrq 20
1241 #define FC_SetFlowCtl 21
1242 #define FC_GenIrq 22
1243 #define FC_InCD180 23
1244 #define FC_OutCD180 24
1245 #define FC_InUARTreg 23
1246 #define FC_OutUARTreg 24
1247 #define FC_SetXonXoff 25
1248 #define FC_OutCD180CCR 26
1249 #define FC_ExtIQueue 27
1250 #define FC_ExtOQueue 28
1251 #define FC_ClrLineIrq 29
1252 #define FC_HWFlowCtl 30
1253 #define FC_GetClockRate 35
1254 #define FC_SetBaud 36
1255 #define FC_SetDataMode 41
1256 #define FC_GetCCSR 43
1257 #define FC_GetDataError 45
1258 #define FC_RxControl 50
1259 #define FC_ImmSend 51
1260 #define FC_SetXonState 52
1261 #define FC_SetXoffState 53
1262 #define FC_SetRxFIFOTrig 54
1263 #define FC_SetTxFIFOCnt 55
1264 #define FC_UnixRate 56
1265 #define FC_UnixResetTimer 57
1267 #define RxFIFOTrig1 0
1268 #define RxFIFOTrig4 1
1269 #define RxFIFOTrig8 2
1270 #define RxFIFOTrig14 3
1275 #define DRAM_global 0
1276 #define INT_data (DRAM_global + 0)
1277 #define Config_base (DRAM_global + 0x108)
1279 #define IRQindex (INT_data + 0)
1280 #define IRQpending (INT_data + 4)
1281 #define IRQtable (INT_data + 8)
1286 #define IntrRx 0x01 /* receiver data O.K. */
1287 #define IntrTx 0x02 /* transmit buffer empty */
1288 #define IntrFunc 0x04 /* function complete */
1289 #define IntrBreak 0x08 /* received break */
1290 #define IntrLine 0x10 /* line status change
1292 #define IntrIntr 0x20 /* received INTR code */
1293 #define IntrQuit 0x40 /* received QUIT code */
1294 #define IntrEOF 0x80 /* received EOF code */
1296 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1297 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1299 #define Magic_no (Config_base + 0)
1300 #define Card_model_no (Config_base + 2)
1301 #define Total_ports (Config_base + 4)
1302 #define Module_cnt (Config_base + 8)
1303 #define Module_no (Config_base + 10)
1304 #define Timer_10ms (Config_base + 14)
1305 #define Disable_IRQ (Config_base + 20)
1306 #define TMS320_PORT1 (Config_base + 22)
1307 #define TMS320_PORT2 (Config_base + 24)
1308 #define TMS320_CLOCK (Config_base + 26)
1311 * DATA BUFFER in DRAM
1313 #define Extern_table 0x400 /* Base address of the external table
1314 (24 words * 64) total 3K bytes
1315 (24 words * 128) total 6K bytes */
1316 #define Extern_size 0x60 /* 96 bytes */
1317 #define RXrptr 0x00 /* read pointer for RX buffer */
1318 #define RXwptr 0x02 /* write pointer for RX buffer */
1319 #define TXrptr 0x04 /* read pointer for TX buffer */
1320 #define TXwptr 0x06 /* write pointer for TX buffer */
1321 #define HostStat 0x08 /* IRQ flag and general flag */
1322 #define FlagStat 0x0A
1323 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1324 /* x x x x | | | | */
1325 /* | | | + CTS flow */
1326 /* | | +--- RTS flow */
1327 /* | +------ TX Xon/Xoff */
1328 /* +--------- RX Xon/Xoff */
1329 #define Break_cnt 0x0E /* received break count */
1330 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1331 #define RX_mask 0x12
1332 #define TX_mask 0x14
1333 #define Ofs_rxb 0x16
1334 #define Ofs_txb 0x18
1335 #define Page_rxb 0x1A
1336 #define Page_txb 0x1C
1337 #define EndPage_rxb 0x1E
1338 #define EndPage_txb 0x20
1339 #define Data_error 0x22
1340 #define RxTrigger 0x28
1341 #define TxTrigger 0x2a
1343 #define rRXwptr 0x34
1344 #define Low_water 0x36
1346 #define FuncCode 0x40
1347 #define FuncArg 0x42
1348 #define FuncArg1 0x44
1350 #define C218rx_size 0x2000 /* 8K bytes */
1351 #define C218tx_size 0x8000 /* 32K bytes */
1353 #define C218rx_mask (C218rx_size - 1)
1354 #define C218tx_mask (C218tx_size - 1)
1356 #define C320p8rx_size 0x2000
1357 #define C320p8tx_size 0x8000
1358 #define C320p8rx_mask (C320p8rx_size - 1)
1359 #define C320p8tx_mask (C320p8tx_size - 1)
1361 #define C320p16rx_size 0x2000
1362 #define C320p16tx_size 0x4000
1363 #define C320p16rx_mask (C320p16rx_size - 1)
1364 #define C320p16tx_mask (C320p16tx_size - 1)
1366 #define C320p24rx_size 0x2000
1367 #define C320p24tx_size 0x2000
1368 #define C320p24rx_mask (C320p24rx_size - 1)
1369 #define C320p24tx_mask (C320p24tx_size - 1)
1371 #define C320p32rx_size 0x1000
1372 #define C320p32tx_size 0x1000
1373 #define C320p32rx_mask (C320p32rx_size - 1)
1374 #define C320p32tx_mask (C320p32tx_size - 1)
1376 #define Page_size 0x2000
1377 #define Page_mask (Page_size - 1)
1378 #define C218rx_spage 3
1379 #define C218tx_spage 4
1380 #define C218rx_pageno 1
1381 #define C218tx_pageno 4
1382 #define C218buf_pageno 5
1384 #define C320p8rx_spage 3
1385 #define C320p8tx_spage 4
1386 #define C320p8rx_pgno 1
1387 #define C320p8tx_pgno 4
1388 #define C320p8buf_pgno 5
1390 #define C320p16rx_spage 3
1391 #define C320p16tx_spage 4
1392 #define C320p16rx_pgno 1
1393 #define C320p16tx_pgno 2
1394 #define C320p16buf_pgno 3
1396 #define C320p24rx_spage 3
1397 #define C320p24tx_spage 4
1398 #define C320p24rx_pgno 1
1399 #define C320p24tx_pgno 1
1400 #define C320p24buf_pgno 2
1402 #define C320p32rx_spage 3
1403 #define C320p32tx_ofs C320p32rx_size
1404 #define C320p32tx_spage 3
1405 #define C320p32buf_pgno 1
1410 #define WakeupRx 0x01
1411 #define WakeupTx 0x02
1412 #define WakeupBreak 0x08
1413 #define WakeupLine 0x10
1414 #define WakeupIntr 0x20
1415 #define WakeupQuit 0x40
1416 #define WakeupEOF 0x80 /* used in VTIME control */
1417 #define WakeupRxTrigger 0x100
1418 #define WakeupTxTrigger 0x200
1422 #define Rx_over 0x01
1423 #define Xoff_state 0x02
1424 #define Tx_flowOff 0x04
1425 #define Tx_enable 0x08
1426 #define CTS_state 0x10
1427 #define DSR_state 0x20
1428 #define DCD_state 0x80
1432 #define CTS_FlowCtl 1
1433 #define RTS_FlowCtl 2
1434 #define Tx_FlowCtl 4
1435 #define Rx_FlowCtl 8
1436 #define IXM_IXANY 0x10
1438 #define LowWater 128
1446 /* mode definition */
1452 #define MX_STOP1 0x00
1453 #define MX_STOP15 0x04
1454 #define MX_STOP2 0x08
1456 #define MX_PARNONE 0x00
1457 #define MX_PAREVEN 0x40
1458 #define MX_PARODD 0xC0
1463 #define QueryPort MAX_PORTS
1469 int rxcnt[MAX_PORTS];
1470 int txcnt[MAX_PORTS];
1472 typedef struct mon_str mon_st;
1474 #define DCD_changed 0x01
1475 #define DCD_oldstate 0x80
1477 static unsigned char moxaBuff[10240];
1478 static void __iomem *moxaIntNdx[MAX_BOARDS];
1479 static void __iomem *moxaIntPend[MAX_BOARDS];
1480 static void __iomem *moxaIntTable[MAX_BOARDS];
1481 static char moxaChkPort[MAX_PORTS];
1482 static char moxaLineCtrl[MAX_PORTS];
1483 static void __iomem *moxaTableAddr[MAX_PORTS];
1484 static long moxaCurBaud[MAX_PORTS];
1485 static char moxaDCDState[MAX_PORTS];
1486 static char moxaLowChkFlag[MAX_PORTS];
1487 static int moxaLowWaterChk;
1488 static int moxaCard;
1489 static mon_st moxaLog;
1490 static int moxaFuncTout;
1491 static ushort moxaBreakCnt[MAX_PORTS];
1493 static void moxadelay(int);
1494 static void moxafunc(void __iomem *, int, ushort);
1495 static void wait_finish(void __iomem *);
1496 static void low_water_check(void __iomem *);
1497 static int moxaloadbios(int, unsigned char __user *, int);
1498 static int moxafindcard(int);
1499 static int moxaload320b(int, unsigned char __user *, int);
1500 static int moxaloadcode(int, unsigned char __user *, int);
1501 static int moxaloadc218(int, void __iomem *, int);
1502 static int moxaloadc320(int, void __iomem *, int, int *);
1504 /*****************************************************************************
1505 * Driver level functions: *
1506 * 1. MoxaDriverInit(void); *
1507 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1508 * 3. MoxaDriverPoll(void); *
1509 *****************************************************************************/
1510 void MoxaDriverInit(void)
1514 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1517 moxaLowWaterChk = 0;
1518 for (i = 0; i < MAX_PORTS; i++) {
1520 moxaLowChkFlag[i] = 0;
1521 moxaLineCtrl[i] = 0;
1522 moxaLog.rxcnt[i] = 0;
1523 moxaLog.txcnt[i] = 0;
1528 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1529 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1530 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1531 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1532 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1533 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1534 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1535 #define MOXA_GETDATACOUNT (MOXA + 23)
1536 #define MOXA_GET_IOQUEUE (MOXA + 27)
1537 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1538 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1539 #define MOXA_GET_MAJOR (MOXA + 63)
1540 #define MOXA_GET_CUMAJOR (MOXA + 64)
1541 #define MOXA_GETMSTATUS (MOXA + 65)
1555 static struct moxaq_str temp_queue[MAX_PORTS];
1556 static struct dl_str dltmp;
1558 void MoxaPortFlushData(int port, int mode)
1560 void __iomem *ofsAddr;
1561 if ((mode < 0) || (mode > 2))
1563 ofsAddr = moxaTableAddr[port];
1564 moxafunc(ofsAddr, FC_FlushQueue, mode);
1566 moxaLowChkFlag[port] = 0;
1567 low_water_check(ofsAddr);
1571 int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1575 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1576 void __user *argp = (void __user *)arg;
1578 if (port == QueryPort) {
1579 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1580 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1581 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1582 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1583 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1588 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS * sizeof(moxa_board_conf)))
1591 case MOXA_INIT_DRIVER:
1592 if ((int) arg == 0x404)
1595 case MOXA_GETDATACOUNT:
1596 moxaLog.tick = jiffies;
1597 if(copy_to_user(argp, &moxaLog, sizeof(mon_st)))
1600 case MOXA_FLUSH_QUEUE:
1601 MoxaPortFlushData(port, arg);
1603 case MOXA_GET_IOQUEUE:
1604 for (i = 0; i < MAX_PORTS; i++) {
1605 if (moxaChkPort[i]) {
1606 temp_queue[i].inq = MoxaPortRxQueue(i);
1607 temp_queue[i].outq = MoxaPortTxQueue(i);
1610 if(copy_to_user(argp, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
1613 case MOXA_GET_OQUEUE:
1614 i = MoxaPortTxQueue(port);
1615 return put_user(i, (unsigned long __user *)argp);
1616 case MOXA_GET_IQUEUE:
1617 i = MoxaPortRxQueue(port);
1618 return put_user(i, (unsigned long __user *)argp);
1619 case MOXA_GET_MAJOR:
1620 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1623 case MOXA_GET_CUMAJOR:
1625 if(copy_to_user(argp, &i, sizeof(int)))
1628 case MOXA_GETMSTATUS:
1629 for (i = 0; i < MAX_PORTS; i++) {
1631 GMStatus[i].dcd = 0;
1632 GMStatus[i].dsr = 0;
1633 GMStatus[i].cts = 0;
1634 if (!moxaChkPort[i]) {
1637 status = MoxaPortLineStatus(moxaChannels[i].port);
1639 GMStatus[i].cts = 1;
1641 GMStatus[i].dsr = 1;
1643 GMStatus[i].dcd = 1;
1646 if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
1647 GMStatus[i].cflag = moxaChannels[i].cflag;
1649 GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
1651 if(copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
1655 return (-ENOIOCTLCMD);
1656 case MOXA_LOAD_BIOS:
1657 case MOXA_FIND_BOARD:
1658 case MOXA_LOAD_C320B:
1659 case MOXA_LOAD_CODE:
1660 if (!capable(CAP_SYS_RAWIO))
1665 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1667 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
1672 case MOXA_LOAD_BIOS:
1673 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1675 case MOXA_FIND_BOARD:
1676 return moxafindcard(dltmp.cardno);
1677 case MOXA_LOAD_C320B:
1678 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1679 default: /* to keep gcc happy */
1681 case MOXA_LOAD_CODE:
1682 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1690 int MoxaDriverPoll(void)
1692 register ushort temp;
1694 void __iomem *ofsAddr;
1700 for (card = 0; card < MAX_BOARDS; card++) {
1701 if (loadstat[card] == 0)
1703 if ((ports = moxa_boards[card].numPorts) == 0)
1705 if (readb(moxaIntPend[card]) == 0xff) {
1706 ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
1707 p = card * MAX_PORTS_PER_BOARD;
1709 for (port = 0; port < ports; port += 2, p++) {
1710 if ((temp = readw(ip + port)) != 0) {
1711 writew(0, ip + port);
1712 ofsAddr = moxaTableAddr[p];
1714 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1715 if (temp & IntrBreak) {
1718 if (temp & IntrLine) {
1719 if (readb(ofsAddr + FlagStat) & DCD_state) {
1720 if ((moxaDCDState[p] & DCD_oldstate) == 0)
1721 moxaDCDState[p] = (DCD_oldstate |
1724 if (moxaDCDState[p] & DCD_oldstate)
1725 moxaDCDState[p] = DCD_changed;
1730 writeb(0, moxaIntPend[card]);
1732 if (moxaLowWaterChk) {
1733 p = card * MAX_PORTS_PER_BOARD;
1734 for (port = 0; port < ports; port++, p++) {
1735 if (moxaLowChkFlag[p]) {
1736 moxaLowChkFlag[p] = 0;
1737 ofsAddr = moxaTableAddr[p];
1738 low_water_check(ofsAddr);
1743 moxaLowWaterChk = 0;
1747 /*****************************************************************************
1748 * Card level function: *
1749 * 1. MoxaPortsOfCard(int cardno); *
1750 *****************************************************************************/
1751 int MoxaPortsOfCard(int cardno)
1754 if (moxa_boards[cardno].boardType == 0)
1756 return (moxa_boards[cardno].numPorts);
1759 /*****************************************************************************
1760 * Port level functions: *
1761 * 1. MoxaPortIsValid(int port); *
1762 * 2. MoxaPortEnable(int port); *
1763 * 3. MoxaPortDisable(int port); *
1764 * 4. MoxaPortGetMaxBaud(int port); *
1765 * 5. MoxaPortGetCurBaud(int port); *
1766 * 6. MoxaPortSetBaud(int port, long baud); *
1767 * 7. MoxaPortSetMode(int port, int databit, int stopbit, int parity); *
1768 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1769 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1770 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1771 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1772 * 12. MoxaPortLineStatus(int port); *
1773 * 13. MoxaPortDCDChange(int port); *
1774 * 14. MoxaPortDCDON(int port); *
1775 * 15. MoxaPortFlushData(int port, int mode); *
1776 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1777 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1778 * 18. MoxaPortTxBufSize(int port); *
1779 * 19. MoxaPortRxBufSize(int port); *
1780 * 20. MoxaPortTxQueue(int port); *
1781 * 21. MoxaPortTxFree(int port); *
1782 * 22. MoxaPortRxQueue(int port); *
1783 * 23. MoxaPortRxFree(int port); *
1784 * 24. MoxaPortTxDisable(int port); *
1785 * 25. MoxaPortTxEnable(int port); *
1786 * 26. MoxaPortGetBrkCnt(int port); *
1787 * 27. MoxaPortResetBrkCnt(int port); *
1788 * 28. MoxaPortSetXonXoff(int port, int xonValue, int xoffValue); *
1789 * 29. MoxaPortIsTxHold(int port); *
1790 * 30. MoxaPortSendBreak(int port, int ticks); *
1791 *****************************************************************************/
1793 * Moxa Port Number Description:
1795 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1796 * the port number using in MOXA driver functions will be 0 to 31 for
1797 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1798 * to 127 for fourth. For example, if you setup three MOXA boards,
1799 * first board is C218, second board is C320-16 and third board is
1800 * C320-32. The port number of first board (C218 - 8 ports) is from
1801 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1802 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1803 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1804 * 127 will be invalid.
1807 * Moxa Functions Description:
1809 * Function 1: Driver initialization routine, this routine must be
1810 * called when initialized driver.
1812 * void MoxaDriverInit();
1815 * Function 2: Moxa driver private IOCTL command processing.
1817 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1819 * unsigned int cmd : IOCTL command
1820 * unsigned long arg : IOCTL argument
1821 * int port : port number (0 - 127)
1828 * Function 3: Moxa driver polling process routine.
1830 * int MoxaDriverPoll(void);
1832 * return: 0 ; polling O.K.
1833 * -1 : no any Moxa card.
1836 * Function 4: Get the ports of this card.
1838 * int MoxaPortsOfCard(int cardno);
1840 * int cardno : card number (0 - 3)
1842 * return: 0 : this card is invalid
1846 * Function 5: Check this port is valid or invalid
1848 * int MoxaPortIsValid(int port);
1849 * int port : port number (0 - 127, ref port description)
1851 * return: 0 : this port is invalid
1852 * 1 : this port is valid
1855 * Function 6: Enable this port to start Tx/Rx data.
1857 * void MoxaPortEnable(int port);
1858 * int port : port number (0 - 127)
1861 * Function 7: Disable this port
1863 * void MoxaPortDisable(int port);
1864 * int port : port number (0 - 127)
1867 * Function 8: Get the maximun available baud rate of this port.
1869 * long MoxaPortGetMaxBaud(int port);
1870 * int port : port number (0 - 127)
1872 * return: 0 : this port is invalid
1873 * 38400/57600/115200 bps
1876 * Function 9: Get the current baud rate of this port.
1878 * long MoxaPortGetCurBaud(int port);
1879 * int port : port number (0 - 127)
1881 * return: 0 : this port is invalid
1885 * Function 10: Setting baud rate of this port.
1887 * long MoxaPortSetBaud(int port, long baud);
1888 * int port : port number (0 - 127)
1889 * long baud : baud rate (50 - 115200)
1891 * return: 0 : this port is invalid or baud < 50
1892 * 50 - 115200 : the real baud rate set to the port, if
1893 * the argument baud is large than maximun
1894 * available baud rate, the real setting
1895 * baud rate will be the maximun baud rate.
1898 * Function 11: Setting the data-bits/stop-bits/parity of this port
1900 * int MoxaPortSetMode(int port, int databits, int stopbits, int parity);
1901 * int port : port number (0 - 127)
1902 * int databits : data bits (8/7/6/5)
1903 * int stopbits : stop bits (2/1/0, 0 show 1.5 stop bits)
1904 int parity : parity (0:None,1:Odd,2:Even,3:Mark,4:Space)
1906 * return: -1 : invalid parameter
1910 * Function 12: Configure the port.
1912 * int MoxaPortSetTermio(int port, struct termios *termio, speed_t baud);
1913 * int port : port number (0 - 127)
1914 * struct termios * termio : termio structure pointer
1915 * speed_t baud : baud rate
1917 * return: -1 : this port is invalid or termio == NULL
1921 * Function 13: Get the DTR/RTS state of this port.
1923 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1924 * int port : port number (0 - 127)
1925 * int * dtrState : pointer to INT to receive the current DTR
1926 * state. (if NULL, this function will not
1927 * write to this address)
1928 * int * rtsState : pointer to INT to receive the current RTS
1929 * state. (if NULL, this function will not
1930 * write to this address)
1932 * return: -1 : this port is invalid
1936 * Function 14: Setting the DTR/RTS output state of this port.
1938 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1939 * int port : port number (0 - 127)
1940 * int dtrState : DTR output state (0: off, 1: on)
1941 * int rtsState : RTS output state (0: off, 1: on)
1944 * Function 15: Setting the flow control of this port.
1946 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1947 * int txFlow,int xany);
1948 * int port : port number (0 - 127)
1949 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1950 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1951 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1952 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1953 * int xany : S/W XANY flow control (0: no, 1: yes)
1956 * Function 16: Get ths line status of this port
1958 * int MoxaPortLineStatus(int port);
1959 * int port : port number (0 - 127)
1961 * return: Bit 0 - CTS state (0: off, 1: on)
1962 * Bit 1 - DSR state (0: off, 1: on)
1963 * Bit 2 - DCD state (0: off, 1: on)
1966 * Function 17: Check the DCD state has changed since the last read
1969 * int MoxaPortDCDChange(int port);
1970 * int port : port number (0 - 127)
1972 * return: 0 : no changed
1973 * 1 : DCD has changed
1976 * Function 18: Check ths current DCD state is ON or not.
1978 * int MoxaPortDCDON(int port);
1979 * int port : port number (0 - 127)
1981 * return: 0 : DCD off
1985 * Function 19: Flush the Rx/Tx buffer data of this port.
1987 * void MoxaPortFlushData(int port, int mode);
1988 * int port : port number (0 - 127)
1990 * 0 : flush the Rx buffer
1991 * 1 : flush the Tx buffer
1992 * 2 : flush the Rx and Tx buffer
1995 * Function 20: Write data.
1997 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
1998 * int port : port number (0 - 127)
1999 * unsigned char * buffer : pointer to write data buffer.
2000 * int length : write data length
2002 * return: 0 - length : real write data length
2005 * Function 21: Read data.
2007 * int MoxaPortReadData(int port, struct tty_struct *tty);
2008 * int port : port number (0 - 127)
2009 * struct tty_struct *tty : tty for data
2011 * return: 0 - length : real read data length
2014 * Function 22: Get the Tx buffer size of this port
2016 * int MoxaPortTxBufSize(int port);
2017 * int port : port number (0 - 127)
2019 * return: .. : Tx buffer size
2022 * Function 23: Get the Rx buffer size of this port
2024 * int MoxaPortRxBufSize(int port);
2025 * int port : port number (0 - 127)
2027 * return: .. : Rx buffer size
2030 * Function 24: Get the Tx buffer current queued data bytes
2032 * int MoxaPortTxQueue(int port);
2033 * int port : port number (0 - 127)
2035 * return: .. : Tx buffer current queued data bytes
2038 * Function 25: Get the Tx buffer current free space
2040 * int MoxaPortTxFree(int port);
2041 * int port : port number (0 - 127)
2043 * return: .. : Tx buffer current free space
2046 * Function 26: Get the Rx buffer current queued data bytes
2048 * int MoxaPortRxQueue(int port);
2049 * int port : port number (0 - 127)
2051 * return: .. : Rx buffer current queued data bytes
2054 * Function 27: Get the Rx buffer current free space
2056 * int MoxaPortRxFree(int port);
2057 * int port : port number (0 - 127)
2059 * return: .. : Rx buffer current free space
2062 * Function 28: Disable port data transmission.
2064 * void MoxaPortTxDisable(int port);
2065 * int port : port number (0 - 127)
2068 * Function 29: Enable port data transmission.
2070 * void MoxaPortTxEnable(int port);
2071 * int port : port number (0 - 127)
2074 * Function 30: Get the received BREAK signal count.
2076 * int MoxaPortGetBrkCnt(int port);
2077 * int port : port number (0 - 127)
2079 * return: 0 - .. : BREAK signal count
2082 * Function 31: Get the received BREAK signal count and reset it.
2084 * int MoxaPortResetBrkCnt(int port);
2085 * int port : port number (0 - 127)
2087 * return: 0 - .. : BREAK signal count
2090 * Function 32: Set the S/W flow control new XON/XOFF value, default
2091 * XON is 0x11 & XOFF is 0x13.
2093 * void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue);
2094 * int port : port number (0 - 127)
2095 * int xonValue : new XON value (0 - 255)
2096 * int xoffValue : new XOFF value (0 - 255)
2099 * Function 33: Check this port's transmission is hold by remote site
2100 * because the flow control.
2102 * int MoxaPortIsTxHold(int port);
2103 * int port : port number (0 - 127)
2105 * return: 0 : normal
2106 * 1 : hold by remote site
2109 * Function 34: Send out a BREAK signal.
2111 * void MoxaPortSendBreak(int port, int ms100);
2112 * int port : port number (0 - 127)
2113 * int ms100 : break signal time interval.
2114 * unit: 100 mini-second. if ms100 == 0, it will
2115 * send out a about 250 ms BREAK signal.
2118 int MoxaPortIsValid(int port)
2123 if (moxaChkPort[port] == 0)
2128 void MoxaPortEnable(int port)
2130 void __iomem *ofsAddr;
2131 int MoxaPortLineStatus(int);
2132 short lowwater = 512;
2134 ofsAddr = moxaTableAddr[port];
2135 writew(lowwater, ofsAddr + Low_water);
2136 moxaBreakCnt[port] = 0;
2137 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2138 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2139 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
2141 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
2144 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
2145 moxafunc(ofsAddr, FC_FlushQueue, 2);
2147 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
2148 MoxaPortLineStatus(port);
2151 void MoxaPortDisable(int port)
2153 void __iomem *ofsAddr = moxaTableAddr[port];
2155 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
2156 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
2157 writew(0, ofsAddr + HostStat);
2158 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
2161 long MoxaPortGetMaxBaud(int port)
2163 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2164 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
2171 long MoxaPortSetBaud(int port, long baud)
2173 void __iomem *ofsAddr;
2177 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
2179 ofsAddr = moxaTableAddr[port];
2183 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2184 else if (max == 57600L)
2185 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2187 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2189 moxafunc(ofsAddr, FC_SetBaud, val);
2191 moxaCurBaud[port] = baud;
2195 int MoxaPortSetTermio(int port, struct termios *termio, speed_t baud)
2197 void __iomem *ofsAddr;
2201 if (moxaChkPort[port] == 0 || termio == 0)
2203 ofsAddr = moxaTableAddr[port];
2204 cflag = termio->c_cflag; /* termio->c_cflag */
2206 mode = termio->c_cflag & CSIZE;
2209 else if (mode == CS6)
2211 else if (mode == CS7)
2213 else if (mode == CS8)
2216 if (termio->c_cflag & CSTOPB) {
2224 if (termio->c_cflag & PARENB) {
2225 if (termio->c_cflag & PARODD)
2232 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2234 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2235 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2236 if (baud >= 921600L)
2239 MoxaPortSetBaud(port, baud);
2241 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2242 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2243 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2244 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2245 wait_finish(ofsAddr);
2251 int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2254 if (!MoxaPortIsValid(port))
2257 if (moxaLineCtrl[port] & DTR_ON)
2263 if (moxaLineCtrl[port] & RTS_ON)
2271 void MoxaPortLineCtrl(int port, int dtr, int rts)
2273 void __iomem *ofsAddr;
2276 ofsAddr = moxaTableAddr[port];
2282 moxaLineCtrl[port] = mode;
2283 moxafunc(ofsAddr, FC_LineControl, mode);
2286 void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2288 void __iomem *ofsAddr;
2291 ofsAddr = moxaTableAddr[port];
2294 mode |= RTS_FlowCtl;
2296 mode |= CTS_FlowCtl;
2303 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2306 int MoxaPortLineStatus(int port)
2308 void __iomem *ofsAddr;
2311 ofsAddr = moxaTableAddr[port];
2312 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2313 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2314 moxafunc(ofsAddr, FC_LineStatus, 0);
2315 val = readw(ofsAddr + FuncArg);
2317 val = readw(ofsAddr + FlagStat) >> 4;
2322 if ((moxaDCDState[port] & DCD_oldstate) == 0)
2323 moxaDCDState[port] = (DCD_oldstate | DCD_changed);
2325 if (moxaDCDState[port] & DCD_oldstate)
2326 moxaDCDState[port] = DCD_changed;
2332 int MoxaPortDCDChange(int port)
2336 if (moxaChkPort[port] == 0)
2338 n = moxaDCDState[port];
2339 moxaDCDState[port] &= ~DCD_changed;
2344 int MoxaPortDCDON(int port)
2348 if (moxaChkPort[port] == 0)
2350 if (moxaDCDState[port] & DCD_oldstate)
2359 int MoxaDumpMem(int port, unsigned char * buffer, int len)
2362 unsigned long baseAddr,ofsAddr,ofs;
2364 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2365 ofs = baseAddr + DynPage_addr + pageofs;
2368 for (i = 0; i < len; i++)
2369 buffer[i] = readb(ofs+i);
2374 int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2379 ushort head, tx_mask, spage, epage;
2380 ushort pageno, pageofs, bufhead;
2381 void __iomem *baseAddr, *ofsAddr, *ofs;
2383 ofsAddr = moxaTableAddr[port];
2384 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2385 tx_mask = readw(ofsAddr + TX_mask);
2386 spage = readw(ofsAddr + Page_txb);
2387 epage = readw(ofsAddr + EndPage_txb);
2388 tail = readw(ofsAddr + TXwptr);
2389 head = readw(ofsAddr + TXrptr);
2390 c = (head > tail) ? (head - tail - 1)
2391 : (head - tail + tx_mask);
2394 moxaLog.txcnt[port] += c;
2396 if (spage == epage) {
2397 bufhead = readw(ofsAddr + Ofs_txb);
2398 writew(spage, baseAddr + Control_reg);
2401 len = head - tail - 1;
2403 len = tx_mask + 1 - tail;
2404 len = (c > len) ? len : c;
2405 ofs = baseAddr + DynPage_addr + bufhead + tail;
2406 for (i = 0; i < len; i++)
2407 writeb(*buffer++, ofs + i);
2408 tail = (tail + len) & tx_mask;
2411 writew(tail, ofsAddr + TXwptr);
2414 pageno = spage + (tail >> 13);
2415 pageofs = tail & Page_mask;
2417 cnt = Page_size - pageofs;
2421 writeb(pageno, baseAddr + Control_reg);
2422 ofs = baseAddr + DynPage_addr + pageofs;
2423 for (i = 0; i < cnt; i++)
2424 writeb(*buffer++, ofs + i);
2426 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2429 if (++pageno == epage)
2434 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2438 int MoxaPortReadData(int port, struct tty_struct *tty)
2440 register ushort head, pageofs;
2441 int i, count, cnt, len, total, remain;
2442 ushort tail, rx_mask, spage, epage;
2443 ushort pageno, bufhead;
2444 void __iomem *baseAddr, *ofsAddr, *ofs;
2446 ofsAddr = moxaTableAddr[port];
2447 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2448 head = readw(ofsAddr + RXrptr);
2449 tail = readw(ofsAddr + RXwptr);
2450 rx_mask = readw(ofsAddr + RX_mask);
2451 spage = readw(ofsAddr + Page_rxb);
2452 epage = readw(ofsAddr + EndPage_rxb);
2453 count = (tail >= head) ? (tail - head)
2454 : (tail - head + rx_mask + 1);
2459 remain = count - total;
2460 moxaLog.rxcnt[port] += total;
2462 if (spage == epage) {
2463 bufhead = readw(ofsAddr + Ofs_rxb);
2464 writew(spage, baseAddr + Control_reg);
2469 len = rx_mask + 1 - head;
2470 len = (count > len) ? len : count;
2471 ofs = baseAddr + DynPage_addr + bufhead + head;
2472 for (i = 0; i < len; i++)
2473 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2474 head = (head + len) & rx_mask;
2477 writew(head, ofsAddr + RXrptr);
2480 pageno = spage + (head >> 13);
2481 pageofs = head & Page_mask;
2483 cnt = Page_size - pageofs;
2487 writew(pageno, baseAddr + Control_reg);
2488 ofs = baseAddr + DynPage_addr + pageofs;
2489 for (i = 0; i < cnt; i++)
2490 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2492 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2495 if (++pageno == epage)
2500 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2501 moxaLowWaterChk = 1;
2502 moxaLowChkFlag[port] = 1;
2508 int MoxaPortTxQueue(int port)
2510 void __iomem *ofsAddr;
2511 ushort rptr, wptr, mask;
2514 ofsAddr = moxaTableAddr[port];
2515 rptr = readw(ofsAddr + TXrptr);
2516 wptr = readw(ofsAddr + TXwptr);
2517 mask = readw(ofsAddr + TX_mask);
2518 len = (wptr - rptr) & mask;
2522 int MoxaPortTxFree(int port)
2524 void __iomem *ofsAddr;
2525 ushort rptr, wptr, mask;
2528 ofsAddr = moxaTableAddr[port];
2529 rptr = readw(ofsAddr + TXrptr);
2530 wptr = readw(ofsAddr + TXwptr);
2531 mask = readw(ofsAddr + TX_mask);
2532 len = mask - ((wptr - rptr) & mask);
2536 int MoxaPortRxQueue(int port)
2538 void __iomem *ofsAddr;
2539 ushort rptr, wptr, mask;
2542 ofsAddr = moxaTableAddr[port];
2543 rptr = readw(ofsAddr + RXrptr);
2544 wptr = readw(ofsAddr + RXwptr);
2545 mask = readw(ofsAddr + RX_mask);
2546 len = (wptr - rptr) & mask;
2551 void MoxaPortTxDisable(int port)
2553 void __iomem *ofsAddr;
2555 ofsAddr = moxaTableAddr[port];
2556 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2559 void MoxaPortTxEnable(int port)
2561 void __iomem *ofsAddr;
2563 ofsAddr = moxaTableAddr[port];
2564 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2568 int MoxaPortResetBrkCnt(int port)
2571 cnt = moxaBreakCnt[port];
2572 moxaBreakCnt[port] = 0;
2577 void MoxaPortSendBreak(int port, int ms100)
2579 void __iomem *ofsAddr;
2581 ofsAddr = moxaTableAddr[port];
2583 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2584 moxadelay(ms100 * (HZ / 10));
2586 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2587 moxadelay(HZ / 4); /* 250 ms */
2589 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2592 static int moxa_get_serial_info(struct moxa_str *info,
2593 struct serial_struct __user *retinfo)
2595 struct serial_struct tmp;
2597 memset(&tmp, 0, sizeof(tmp));
2598 tmp.type = info->type;
2599 tmp.line = info->port;
2602 tmp.flags = info->asyncflags;
2603 tmp.baud_base = 921600;
2604 tmp.close_delay = info->close_delay;
2605 tmp.closing_wait = info->closing_wait;
2606 tmp.custom_divisor = 0;
2608 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2614 static int moxa_set_serial_info(struct moxa_str *info,
2615 struct serial_struct __user *new_info)
2617 struct serial_struct new_serial;
2619 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2622 if ((new_serial.irq != 0) ||
2623 (new_serial.port != 0) ||
2624 // (new_serial.type != info->type) ||
2625 (new_serial.custom_divisor != 0) ||
2626 (new_serial.baud_base != 921600))
2629 if (!capable(CAP_SYS_ADMIN)) {
2630 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2631 (info->asyncflags & ~ASYNC_USR_MASK)))
2634 info->close_delay = new_serial.close_delay * HZ / 100;
2635 info->closing_wait = new_serial.closing_wait * HZ / 100;
2638 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2639 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2641 if (new_serial.type == PORT_16550A) {
2642 MoxaSetFifo(info->port, 1);
2644 MoxaSetFifo(info->port, 0);
2647 info->type = new_serial.type;
2653 /*****************************************************************************
2654 * Static local functions: *
2655 *****************************************************************************/
2657 * moxadelay - delays a specified number ticks
2659 static void moxadelay(int tick)
2661 unsigned long st, et;
2665 while (time_before(jiffies, et));
2668 static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
2671 writew(arg, ofsAddr + FuncArg);
2672 writew(cmd, ofsAddr + FuncCode);
2673 wait_finish(ofsAddr);
2676 static void wait_finish(void __iomem *ofsAddr)
2681 while (readw(ofsAddr + FuncCode) != 0) {
2683 if ((j - i) > moxaFuncTout) {
2689 static void low_water_check(void __iomem *ofsAddr)
2692 ushort rptr, wptr, mask;
2694 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2695 rptr = readw(ofsAddr + RXrptr);
2696 wptr = readw(ofsAddr + RXwptr);
2697 mask = readw(ofsAddr + RX_mask);
2698 len = (wptr - rptr) & mask;
2699 if (len <= Low_water)
2700 moxafunc(ofsAddr, FC_SendXon, 0);
2704 static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2706 void __iomem *baseAddr;
2709 if(copy_from_user(moxaBuff, tmp, len))
2711 baseAddr = moxaBaseAddr[cardno];
2712 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2713 moxadelay(1); /* delay 10 ms */
2714 for (i = 0; i < 4096; i++)
2715 writeb(0, baseAddr + i); /* clear fix page */
2716 for (i = 0; i < len; i++)
2717 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2718 writeb(0, baseAddr + Control_reg); /* restart */
2722 static int moxafindcard(int cardno)
2724 void __iomem *baseAddr;
2727 baseAddr = moxaBaseAddr[cardno];
2728 switch (moxa_boards[cardno].boardType) {
2729 case MOXA_BOARD_C218_ISA:
2730 case MOXA_BOARD_C218_PCI:
2731 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2735 case MOXA_BOARD_CP204J:
2736 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2741 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2744 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2751 static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2753 void __iomem *baseAddr;
2756 if(len > sizeof(moxaBuff))
2758 if(copy_from_user(moxaBuff, tmp, len))
2760 baseAddr = moxaBaseAddr[cardno];
2761 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2762 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2763 for (i = 0; i < 7168; i++)
2764 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2765 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2766 for (i = 0; i < (len - 7168); i++)
2767 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2771 static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2773 void __iomem *baseAddr, *ofsAddr;
2774 int retval, port, i;
2776 if(copy_from_user(moxaBuff, tmp, len))
2778 baseAddr = moxaBaseAddr[cardno];
2779 switch (moxa_boards[cardno].boardType) {
2780 case MOXA_BOARD_C218_ISA:
2781 case MOXA_BOARD_C218_PCI:
2782 case MOXA_BOARD_CP204J:
2783 retval = moxaloadc218(cardno, baseAddr, len);
2786 port = cardno * MAX_PORTS_PER_BOARD;
2787 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2788 moxaChkPort[port] = 1;
2789 moxaCurBaud[port] = 9600L;
2790 moxaDCDState[port] = 0;
2791 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2792 ofsAddr = moxaTableAddr[port];
2793 writew(C218rx_mask, ofsAddr + RX_mask);
2794 writew(C218tx_mask, ofsAddr + TX_mask);
2795 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2796 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2798 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2799 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2804 retval = moxaloadc320(cardno, baseAddr, len,
2805 &moxa_boards[cardno].numPorts);
2808 port = cardno * MAX_PORTS_PER_BOARD;
2809 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2810 moxaChkPort[port] = 1;
2811 moxaCurBaud[port] = 9600L;
2812 moxaDCDState[port] = 0;
2813 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2814 ofsAddr = moxaTableAddr[port];
2815 if (moxa_boards[cardno].numPorts == 8) {
2816 writew(C320p8rx_mask, ofsAddr + RX_mask);
2817 writew(C320p8tx_mask, ofsAddr + TX_mask);
2818 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2819 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2820 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2821 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2823 } else if (moxa_boards[cardno].numPorts == 16) {
2824 writew(C320p16rx_mask, ofsAddr + RX_mask);
2825 writew(C320p16tx_mask, ofsAddr + TX_mask);
2826 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2827 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2828 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2829 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2831 } else if (moxa_boards[cardno].numPorts == 24) {
2832 writew(C320p24rx_mask, ofsAddr + RX_mask);
2833 writew(C320p24tx_mask, ofsAddr + TX_mask);
2834 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2835 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2836 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2837 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2838 } else if (moxa_boards[cardno].numPorts == 32) {
2839 writew(C320p32rx_mask, ofsAddr + RX_mask);
2840 writew(C320p32tx_mask, ofsAddr + TX_mask);
2841 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2842 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2843 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2844 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2845 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2850 loadstat[cardno] = 1;
2854 static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
2857 int i, j, len1, len2;
2858 ushort usum, *ptr, keycode;
2860 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2861 keycode = CP204J_KeyCode;
2863 keycode = C218_KeyCode;
2866 ptr = (ushort *) moxaBuff;
2867 for (i = 0; i < len1; i++)
2868 usum += le16_to_cpu(*(ptr + i));
2874 len2 = (len1 > 2048) ? 2048 : len1;
2876 for (i = 0; i < len2 << 1; i++)
2877 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2880 writew(len2, baseAddr + C218DLoad_len);
2881 writew(0, baseAddr + C218_key);
2882 for (i = 0; i < 100; i++) {
2883 if (readw(baseAddr + C218_key) == keycode)
2885 moxadelay(1); /* delay 10 ms */
2887 if (readw(baseAddr + C218_key) != keycode) {
2891 writew(0, baseAddr + C218DLoad_len);
2892 writew(usum, baseAddr + C218check_sum);
2893 writew(0, baseAddr + C218_key);
2894 for (i = 0; i < 100; i++) {
2895 if (readw(baseAddr + C218_key) == keycode)
2897 moxadelay(1); /* delay 10 ms */
2900 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2901 if (readb(baseAddr + C218chksum_ok) != 1) {
2904 writew(0, baseAddr + C218_key);
2905 for (i = 0; i < 100; i++) {
2906 if (readw(baseAddr + Magic_no) == Magic_code)
2908 moxadelay(1); /* delay 10 ms */
2910 if (readw(baseAddr + Magic_no) != Magic_code) {
2913 writew(1, baseAddr + Disable_IRQ);
2914 writew(0, baseAddr + Magic_no);
2915 for (i = 0; i < 100; i++) {
2916 if (readw(baseAddr + Magic_no) == Magic_code)
2918 moxadelay(1); /* delay 10 ms */
2920 if (readw(baseAddr + Magic_no) != Magic_code) {
2924 moxaIntNdx[cardno] = baseAddr + IRQindex;
2925 moxaIntPend[cardno] = baseAddr + IRQpending;
2926 moxaIntTable[cardno] = baseAddr + IRQtable;
2930 static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
2933 int i, j, wlen, len2, retry;
2938 uptr = (ushort *) moxaBuff;
2939 for (i = 0; i < wlen; i++)
2940 usum += le16_to_cpu(uptr[i]);
2951 for (i = 0; i < len2; i++)
2952 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
2955 writew(len2, baseAddr + C320DLoad_len);
2956 writew(0, baseAddr + C320_key);
2957 for (i = 0; i < 10; i++) {
2958 if (readw(baseAddr + C320_key) == C320_KeyCode)
2962 if (readw(baseAddr + C320_key) != C320_KeyCode)
2965 writew(0, baseAddr + C320DLoad_len);
2966 writew(usum, baseAddr + C320check_sum);
2967 writew(0, baseAddr + C320_key);
2968 for (i = 0; i < 10; i++) {
2969 if (readw(baseAddr + C320_key) == C320_KeyCode)
2974 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
2975 if (readb(baseAddr + C320chksum_ok) != 1)
2977 writew(0, baseAddr + C320_key);
2978 for (i = 0; i < 600; i++) {
2979 if (readw(baseAddr + Magic_no) == Magic_code)
2983 if (readw(baseAddr + Magic_no) != Magic_code)
2986 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
2987 writew(0x3800, baseAddr + TMS320_PORT1);
2988 writew(0x3900, baseAddr + TMS320_PORT2);
2989 writew(28499, baseAddr + TMS320_CLOCK);
2991 writew(0x3200, baseAddr + TMS320_PORT1);
2992 writew(0x3400, baseAddr + TMS320_PORT2);
2993 writew(19999, baseAddr + TMS320_CLOCK);
2995 writew(1, baseAddr + Disable_IRQ);
2996 writew(0, baseAddr + Magic_no);
2997 for (i = 0; i < 500; i++) {
2998 if (readw(baseAddr + Magic_no) == Magic_code)
3002 if (readw(baseAddr + Magic_no) != Magic_code)
3005 j = readw(baseAddr + Module_cnt);
3009 writew(j, baseAddr + Module_no);
3010 writew(0, baseAddr + Magic_no);
3011 for (i = 0; i < 600; i++) {
3012 if (readw(baseAddr + Magic_no) == Magic_code)
3016 if (readw(baseAddr + Magic_no) != Magic_code)
3019 moxaIntNdx[cardno] = baseAddr + IRQindex;
3020 moxaIntPend[cardno] = baseAddr + IRQpending;
3021 moxaIntTable[cardno] = baseAddr + IRQtable;
3026 long MoxaPortGetCurBaud(int port)
3029 if (moxaChkPort[port] == 0)
3031 return (moxaCurBaud[port]);
3035 static void MoxaSetFifo(int port, int enable)
3037 void __iomem *ofsAddr = moxaTableAddr[port];
3040 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
3041 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
3043 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
3044 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
3049 int MoxaPortSetMode(int port, int databits, int stopbits, int parity)
3051 void __iomem *ofsAddr;
3074 break; /* stop bits 1.5 */
3103 ofsAddr = moxaTableAddr[port];
3104 moxafunc(ofsAddr, FC_SetMode, val);
3108 int MoxaPortTxBufSize(int port)
3110 void __iomem *ofsAddr;
3113 ofsAddr = moxaTableAddr[port];
3114 size = readw(ofsAddr + TX_mask);
3118 int MoxaPortRxBufSize(int port)
3120 void __iomem *ofsAddr;
3123 ofsAddr = moxaTableAddr[port];
3124 size = readw(ofsAddr + RX_mask);
3128 int MoxaPortRxFree(int port)
3130 void __iomem *ofsAddr;
3131 ushort rptr, wptr, mask;
3134 ofsAddr = moxaTableAddr[port];
3135 rptr = readw(ofsAddr + RXrptr);
3136 wptr = readw(ofsAddr + RXwptr);
3137 mask = readw(ofsAddr + RX_mask);
3138 len = mask - ((wptr - rptr) & mask);
3141 int MoxaPortGetBrkCnt(int port)
3143 return (moxaBreakCnt[port]);
3146 void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue)
3148 void __iomem *ofsAddr;
3150 ofsAddr = moxaTableAddr[port];
3151 writew(xonValue, ofsAddr + FuncArg);
3152 writew(xoffValue, ofsAddr + FuncArg1);
3153 writew(FC_SetXonXoff, ofsAddr + FuncCode);
3154 wait_finish(ofsAddr);
3157 int MoxaPortIsTxHold(int port)
3159 void __iomem *ofsAddr;
3162 ofsAddr = moxaTableAddr[port];
3163 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
3164 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
3165 moxafunc(ofsAddr, FC_GetCCSR, 0);
3166 val = readw(ofsAddr + FuncArg);
3170 if (readw(ofsAddr + FlagStat) & Tx_flowOff)