1 /*****************************************************************************/
3 * moxa.c -- MOXA Intellio family multiport serial driver.
5 * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com.tw).
7 * This code is loosely based on the Linux serial driver, written by
8 * Linus Torvalds, Theodore T'so and others.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 * MOXA Intellio Series Driver
32 #include <linux/module.h>
33 #include <linux/types.h>
35 #include <linux/ioport.h>
36 #include <linux/errno.h>
37 #include <linux/signal.h>
38 #include <linux/sched.h>
39 #include <linux/timer.h>
40 #include <linux/interrupt.h>
41 #include <linux/tty.h>
42 #include <linux/tty_flip.h>
43 #include <linux/major.h>
44 #include <linux/string.h>
45 #include <linux/fcntl.h>
46 #include <linux/ptrace.h>
47 #include <linux/serial.h>
48 #include <linux/tty_driver.h>
49 #include <linux/delay.h>
50 #include <linux/pci.h>
51 #include <linux/init.h>
52 #include <linux/bitops.h>
54 #include <asm/system.h>
56 #include <asm/uaccess.h>
58 #define MOXA_VERSION "5.1k"
61 #define MOXACUMAJOR 173
63 #define put_to_user(arg1, arg2) put_user(arg1, (unsigned long *)arg2)
64 #define get_from_user(arg1, arg2) get_user(arg1, (unsigned int *)arg2)
66 #define MAX_BOARDS 4 /* Don't change this value */
67 #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
68 #define MAX_PORTS 128 /* Don't change this value */
71 * Define the Moxa PCI vendor and device IDs.
73 #define MOXA_BUS_TYPE_ISA 0
74 #define MOXA_BUS_TYPE_PCI 1
76 #ifndef PCI_VENDOR_ID_MOXA
77 #define PCI_VENDOR_ID_MOXA 0x1393
79 #ifndef PCI_DEVICE_ID_CP204J
80 #define PCI_DEVICE_ID_CP204J 0x2040
82 #ifndef PCI_DEVICE_ID_C218
83 #define PCI_DEVICE_ID_C218 0x2180
85 #ifndef PCI_DEVICE_ID_C320
86 #define PCI_DEVICE_ID_C320 0x3200
90 MOXA_BOARD_C218_PCI = 1,
97 static char *moxa_brdname[] =
99 "C218 Turbo PCI series",
100 "C218 Turbo ISA series",
101 "C320 Turbo PCI series",
102 "C320 Turbo ISA series",
107 static struct pci_device_id moxa_pcibrds[] = {
108 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C218, PCI_ANY_ID, PCI_ANY_ID,
109 0, 0, MOXA_BOARD_C218_PCI },
110 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C320, PCI_ANY_ID, PCI_ANY_ID,
111 0, 0, MOXA_BOARD_C320_PCI },
112 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_CP204J, PCI_ANY_ID, PCI_ANY_ID,
113 0, 0, MOXA_BOARD_CP204J },
116 MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
117 #endif /* CONFIG_PCI */
119 typedef struct _moxa_isa_board_conf {
122 unsigned long baseAddr;
123 } moxa_isa_board_conf;
125 static moxa_isa_board_conf moxa_isa_boards[] =
127 /* {MOXA_BOARD_C218_ISA,8,0xDC000}, */
130 typedef struct _moxa_pci_devinfo {
133 struct pci_dev *pdev;
136 typedef struct _moxa_board_conf {
139 unsigned long baseAddr;
141 moxa_pci_devinfo pciInfo;
144 static moxa_board_conf moxa_boards[MAX_BOARDS];
145 static void __iomem *moxaBaseAddr[MAX_BOARDS];
146 static int loadstat[MAX_BOARDS];
152 unsigned short closing_wait;
155 long event; /* long req'd for set_bit --RR */
157 unsigned long statusflags;
158 struct tty_struct *tty;
160 wait_queue_head_t open_wait;
161 wait_queue_head_t close_wait;
162 struct work_struct tqueue;
165 struct mxser_mstatus {
173 static struct mxser_mstatus GMStatus[MAX_PORTS];
176 #define TXSTOPPED 0x1
178 #define EMPTYWAIT 0x4
182 #define MOXA_EVENT_HANGUP 1
184 #define SERIAL_DO_RESTART
187 #define SERIAL_TYPE_NORMAL 1
189 #define WAKEUP_CHARS 256
191 #define PORTNO(x) ((x)->index)
193 static int verbose = 0;
194 static int ttymajor = MOXAMAJOR;
195 /* Variables for insmod */
197 static int baseaddr[4];
199 static int numports[4];
202 MODULE_AUTHOR("William Chen");
203 MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
204 MODULE_LICENSE("GPL");
206 module_param_array(type, int, NULL, 0);
207 module_param_array(baseaddr, int, NULL, 0);
208 module_param_array(numports, int, NULL, 0);
210 module_param(ttymajor, int, 0);
211 module_param(verbose, bool, 0644);
213 static struct tty_driver *moxaDriver;
214 static struct moxa_str moxaChannels[MAX_PORTS];
215 static int moxaTimer_on;
216 static struct timer_list moxaTimer;
217 static int moxaEmptyTimer_on[MAX_PORTS];
218 static struct timer_list moxaEmptyTimer[MAX_PORTS];
223 static void do_moxa_softint(struct work_struct *);
224 static int moxa_open(struct tty_struct *, struct file *);
225 static void moxa_close(struct tty_struct *, struct file *);
226 static int moxa_write(struct tty_struct *, const unsigned char *, int);
227 static int moxa_write_room(struct tty_struct *);
228 static void moxa_flush_buffer(struct tty_struct *);
229 static int moxa_chars_in_buffer(struct tty_struct *);
230 static void moxa_flush_chars(struct tty_struct *);
231 static void moxa_put_char(struct tty_struct *, unsigned char);
232 static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
233 static void moxa_throttle(struct tty_struct *);
234 static void moxa_unthrottle(struct tty_struct *);
235 static void moxa_set_termios(struct tty_struct *, struct ktermios *);
236 static void moxa_stop(struct tty_struct *);
237 static void moxa_start(struct tty_struct *);
238 static void moxa_hangup(struct tty_struct *);
239 static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
240 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
241 unsigned int set, unsigned int clear);
242 static void moxa_poll(unsigned long);
243 static void set_tty_param(struct tty_struct *);
244 static int block_till_ready(struct tty_struct *, struct file *,
246 static void setup_empty_event(struct tty_struct *);
247 static void check_xmit_empty(unsigned long);
248 static void shut_down(struct moxa_str *);
249 static void receive_data(struct moxa_str *);
251 * moxa board interface functions:
253 static void MoxaDriverInit(void);
254 static int MoxaDriverIoctl(unsigned int, unsigned long, int);
255 static int MoxaDriverPoll(void);
256 static int MoxaPortsOfCard(int);
257 static int MoxaPortIsValid(int);
258 static void MoxaPortEnable(int);
259 static void MoxaPortDisable(int);
260 static long MoxaPortGetMaxBaud(int);
261 static long MoxaPortSetBaud(int, long);
262 static int MoxaPortSetTermio(int, struct ktermios *, speed_t);
263 static int MoxaPortGetLineOut(int, int *, int *);
264 static void MoxaPortLineCtrl(int, int, int);
265 static void MoxaPortFlowCtrl(int, int, int, int, int, int);
266 static int MoxaPortLineStatus(int);
267 static int MoxaPortDCDChange(int);
268 static int MoxaPortDCDON(int);
269 static void MoxaPortFlushData(int, int);
270 static int MoxaPortWriteData(int, unsigned char *, int);
271 static int MoxaPortReadData(int, struct tty_struct *tty);
272 static int MoxaPortTxQueue(int);
273 static int MoxaPortRxQueue(int);
274 static int MoxaPortTxFree(int);
275 static void MoxaPortTxDisable(int);
276 static void MoxaPortTxEnable(int);
277 static int MoxaPortResetBrkCnt(int);
278 static void MoxaPortSendBreak(int, int);
279 static int moxa_get_serial_info(struct moxa_str *, struct serial_struct __user *);
280 static int moxa_set_serial_info(struct moxa_str *, struct serial_struct __user *);
281 static void MoxaSetFifo(int port, int enable);
283 static const struct tty_operations moxa_ops = {
287 .write_room = moxa_write_room,
288 .flush_buffer = moxa_flush_buffer,
289 .chars_in_buffer = moxa_chars_in_buffer,
290 .flush_chars = moxa_flush_chars,
291 .put_char = moxa_put_char,
293 .throttle = moxa_throttle,
294 .unthrottle = moxa_unthrottle,
295 .set_termios = moxa_set_termios,
298 .hangup = moxa_hangup,
299 .tiocmget = moxa_tiocmget,
300 .tiocmset = moxa_tiocmset,
303 static DEFINE_SPINLOCK(moxa_lock);
306 static int moxa_get_PCI_conf(struct pci_dev *p, int board_type, moxa_board_conf * board)
308 board->baseAddr = pci_resource_start (p, 2);
309 board->boardType = board_type;
310 switch (board_type) {
311 case MOXA_BOARD_C218_ISA:
312 case MOXA_BOARD_C218_PCI:
316 case MOXA_BOARD_CP204J:
323 board->busType = MOXA_BUS_TYPE_PCI;
324 board->pciInfo.busNum = p->bus->number;
325 board->pciInfo.devNum = p->devfn >> 3;
326 board->pciInfo.pdev = p;
327 /* don't lose the reference in the next pci_get_device iteration */
332 #endif /* CONFIG_PCI */
334 static int __init moxa_init(void)
339 printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION);
340 moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
344 moxaDriver->owner = THIS_MODULE;
345 moxaDriver->name = "ttyMX";
346 moxaDriver->major = ttymajor;
347 moxaDriver->minor_start = 0;
348 moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
349 moxaDriver->subtype = SERIAL_TYPE_NORMAL;
350 moxaDriver->init_termios = tty_std_termios;
351 moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
352 moxaDriver->init_termios.c_ispeed = 9600;
353 moxaDriver->init_termios.c_ospeed = 9600;
354 moxaDriver->flags = TTY_DRIVER_REAL_RAW;
355 tty_set_operations(moxaDriver, &moxa_ops);
357 for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) {
358 ch->type = PORT_16550A;
360 INIT_WORK(&ch->tqueue, do_moxa_softint);
361 ch->close_delay = 5 * HZ / 10;
362 ch->closing_wait = 30 * HZ;
363 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
364 init_waitqueue_head(&ch->open_wait);
365 init_waitqueue_head(&ch->close_wait);
368 printk("Tty devices major number = %d\n", ttymajor);
370 if (tty_register_driver(moxaDriver)) {
371 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
372 put_tty_driver(moxaDriver);
375 for (i = 0; i < MAX_PORTS; i++) {
376 init_timer(&moxaEmptyTimer[i]);
377 moxaEmptyTimer[i].function = check_xmit_empty;
378 moxaEmptyTimer[i].data = (unsigned long) & moxaChannels[i];
381 init_timer(&moxaTimer);
382 moxaTimer.function = moxa_poll;
383 moxaTimer.expires = jiffies + (HZ / 50);
385 add_timer(&moxaTimer);
387 /* Find the boards defined in source code */
389 for (i = 0; i < MAX_BOARDS; i++) {
390 if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) ||
391 (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) {
392 moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType;
393 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
394 moxa_boards[numBoards].numPorts = 8;
396 moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts;
397 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
398 moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr;
400 printk("Board %2d: %s board(baseAddr=%lx)\n",
402 moxa_brdname[moxa_boards[numBoards].boardType - 1],
403 moxa_boards[numBoards].baseAddr);
407 /* Find the boards defined form module args. */
409 for (i = 0; i < MAX_BOARDS; i++) {
410 if ((type[i] == MOXA_BOARD_C218_ISA) ||
411 (type[i] == MOXA_BOARD_C320_ISA)) {
413 printk("Board %2d: %s board(baseAddr=%lx)\n",
415 moxa_brdname[type[i] - 1],
416 (unsigned long) baseaddr[i]);
417 if (numBoards >= MAX_BOARDS) {
419 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
422 moxa_boards[numBoards].boardType = type[i];
423 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
424 moxa_boards[numBoards].numPorts = 8;
426 moxa_boards[numBoards].numPorts = numports[i];
427 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
428 moxa_boards[numBoards].baseAddr = baseaddr[i];
433 /* Find PCI boards here */
436 struct pci_dev *p = NULL;
437 int n = ARRAY_SIZE(moxa_pcibrds) - 1;
440 while ((p = pci_get_device(moxa_pcibrds[i].vendor, moxa_pcibrds[i].device, p))!=NULL)
442 if (pci_enable_device(p))
444 if (numBoards >= MAX_BOARDS) {
446 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
448 moxa_get_PCI_conf(p, moxa_pcibrds[i].driver_data,
449 &moxa_boards[numBoards]);
457 for (i = 0; i < numBoards; i++) {
458 moxaBaseAddr[i] = ioremap((unsigned long) moxa_boards[i].baseAddr, 0x4000);
464 static void __exit moxa_exit(void)
469 printk("Unloading module moxa ...\n");
472 del_timer(&moxaTimer);
474 for (i = 0; i < MAX_PORTS; i++)
475 if (moxaEmptyTimer_on[i])
476 del_timer(&moxaEmptyTimer[i]);
478 if (tty_unregister_driver(moxaDriver))
479 printk("Couldn't unregister MOXA Intellio family serial driver\n");
480 put_tty_driver(moxaDriver);
482 for (i = 0; i < MAX_BOARDS; i++) {
484 iounmap(moxaBaseAddr[i]);
485 if (moxa_boards[i].busType == MOXA_BUS_TYPE_PCI)
486 pci_dev_put(moxa_boards[i].pciInfo.pdev);
493 module_init(moxa_init);
494 module_exit(moxa_exit);
496 static void do_moxa_softint(struct work_struct *work)
498 struct moxa_str *ch = container_of(work, struct moxa_str, tqueue);
499 struct tty_struct *tty;
501 if (ch && (tty = ch->tty)) {
502 if (test_and_clear_bit(MOXA_EVENT_HANGUP, &ch->event)) {
503 tty_hangup(tty); /* FIXME: module removal race here - AKPM */
504 wake_up_interruptible(&ch->open_wait);
505 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
510 static int moxa_open(struct tty_struct *tty, struct file *filp)
517 if (port == MAX_PORTS) {
520 if (!MoxaPortIsValid(port)) {
521 tty->driver_data = NULL;
525 ch = &moxaChannels[port];
527 tty->driver_data = ch;
529 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
532 MoxaPortLineCtrl(ch->port, 1, 1);
533 MoxaPortEnable(ch->port);
534 ch->asyncflags |= ASYNC_INITIALIZED;
536 retval = block_till_ready(tty, filp, ch);
538 moxa_unthrottle(tty);
540 if (ch->type == PORT_16550A) {
541 MoxaSetFifo(ch->port, 1);
543 MoxaSetFifo(ch->port, 0);
549 static void moxa_close(struct tty_struct *tty, struct file *filp)
555 if (port == MAX_PORTS) {
558 if (!MoxaPortIsValid(port)) {
559 #ifdef SERIAL_DEBUG_CLOSE
560 printk("Invalid portno in moxa_close\n");
562 tty->driver_data = NULL;
565 if (tty->driver_data == NULL) {
568 if (tty_hung_up_p(filp)) {
571 ch = (struct moxa_str *) tty->driver_data;
573 if ((tty->count == 1) && (ch->count != 1)) {
574 printk("moxa_close: bad serial port count; tty->count is 1, "
575 "ch->count is %d\n", ch->count);
578 if (--ch->count < 0) {
579 printk("moxa_close: bad serial port count, device=%s\n",
586 ch->asyncflags |= ASYNC_CLOSING;
588 ch->cflag = tty->termios->c_cflag;
589 if (ch->asyncflags & ASYNC_INITIALIZED) {
590 setup_empty_event(tty);
591 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
592 moxaEmptyTimer_on[ch->port] = 0;
593 del_timer(&moxaEmptyTimer[ch->port]);
596 MoxaPortFlushData(port, 2);
598 if (tty->driver->flush_buffer)
599 tty->driver->flush_buffer(tty);
600 tty_ldisc_flush(tty);
605 if (ch->blocked_open) {
606 if (ch->close_delay) {
607 msleep_interruptible(jiffies_to_msecs(ch->close_delay));
609 wake_up_interruptible(&ch->open_wait);
611 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
612 wake_up_interruptible(&ch->close_wait);
615 static int moxa_write(struct tty_struct *tty,
616 const unsigned char *buf, int count)
622 ch = (struct moxa_str *) tty->driver_data;
627 spin_lock_irqsave(&moxa_lock, flags);
628 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
629 spin_unlock_irqrestore(&moxa_lock, flags);
631 /*********************************************
632 if ( !(ch->statusflags & LOWWAIT) &&
633 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
634 ************************************************/
635 ch->statusflags |= LOWWAIT;
639 static int moxa_write_room(struct tty_struct *tty)
645 ch = (struct moxa_str *) tty->driver_data;
648 return (MoxaPortTxFree(ch->port));
651 static void moxa_flush_buffer(struct tty_struct *tty)
653 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
657 MoxaPortFlushData(ch->port, 1);
661 static int moxa_chars_in_buffer(struct tty_struct *tty)
664 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
667 * Sigh...I have to check if driver_data is NULL here, because
668 * if an open() fails, the TTY subsystem eventually calls
669 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
670 * routine. And since the open() failed, we return 0 here. TDJ
674 chars = MoxaPortTxQueue(ch->port);
677 * Make it possible to wakeup anything waiting for output
678 * in tty_ioctl.c, etc.
680 if (!(ch->statusflags & EMPTYWAIT))
681 setup_empty_event(tty);
686 static void moxa_flush_chars(struct tty_struct *tty)
689 * Don't think I need this, because this is called to empty the TX
690 * buffer for the 16450, 16550, etc.
694 static void moxa_put_char(struct tty_struct *tty, unsigned char c)
700 ch = (struct moxa_str *) tty->driver_data;
704 spin_lock_irqsave(&moxa_lock, flags);
705 MoxaPortWriteData(port, &c, 1);
706 spin_unlock_irqrestore(&moxa_lock, flags);
707 /************************************************
708 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
709 *************************************************/
710 ch->statusflags |= LOWWAIT;
713 static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
715 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
717 int flag = 0, dtr, rts;
720 if ((port != MAX_PORTS) && (!ch))
723 MoxaPortGetLineOut(ch->port, &dtr, &rts);
728 dtr = MoxaPortLineStatus(ch->port);
738 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
739 unsigned int set, unsigned int clear)
741 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
746 if ((port != MAX_PORTS) && (!ch))
749 MoxaPortGetLineOut(ch->port, &dtr, &rts);
754 if (clear & TIOCM_RTS)
756 if (clear & TIOCM_DTR)
758 MoxaPortLineCtrl(ch->port, dtr, rts);
762 static int moxa_ioctl(struct tty_struct *tty, struct file *file,
763 unsigned int cmd, unsigned long arg)
765 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
767 void __user *argp = (void __user *)arg;
771 if ((port != MAX_PORTS) && (!ch))
775 case TCSBRK: /* SVID version: non-zero arg --> no break */
776 retval = tty_check_change(tty);
779 setup_empty_event(tty);
780 tty_wait_until_sent(tty, 0);
782 MoxaPortSendBreak(ch->port, 0);
784 case TCSBRKP: /* support for POSIX tcsendbreak() */
785 retval = tty_check_change(tty);
788 setup_empty_event(tty);
789 tty_wait_until_sent(tty, 0);
790 MoxaPortSendBreak(ch->port, arg);
793 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
795 if(get_user(retval, (unsigned long __user *) argp))
798 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
801 ch->asyncflags &= ~ASYNC_CHECK_CD;
803 ch->asyncflags |= ASYNC_CHECK_CD;
806 return moxa_get_serial_info(ch, argp);
809 return moxa_set_serial_info(ch, argp);
811 retval = MoxaDriverIoctl(cmd, arg, port);
816 static void moxa_throttle(struct tty_struct *tty)
818 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
820 ch->statusflags |= THROTTLE;
823 static void moxa_unthrottle(struct tty_struct *tty)
825 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
827 ch->statusflags &= ~THROTTLE;
830 static void moxa_set_termios(struct tty_struct *tty,
831 struct ktermios *old_termios)
833 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
838 if (!(old_termios->c_cflag & CLOCAL) &&
839 (tty->termios->c_cflag & CLOCAL))
840 wake_up_interruptible(&ch->open_wait);
843 static void moxa_stop(struct tty_struct *tty)
845 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
849 MoxaPortTxDisable(ch->port);
850 ch->statusflags |= TXSTOPPED;
854 static void moxa_start(struct tty_struct *tty)
856 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
861 if (!(ch->statusflags & TXSTOPPED))
864 MoxaPortTxEnable(ch->port);
865 ch->statusflags &= ~TXSTOPPED;
868 static void moxa_hangup(struct tty_struct *tty)
870 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
872 moxa_flush_buffer(tty);
876 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
878 wake_up_interruptible(&ch->open_wait);
881 static void moxa_poll(unsigned long ignored)
885 struct tty_struct *tp;
889 del_timer(&moxaTimer);
891 if (MoxaDriverPoll() < 0) {
892 moxaTimer.function = moxa_poll;
893 moxaTimer.expires = jiffies + (HZ / 50);
895 add_timer(&moxaTimer);
898 for (card = 0; card < MAX_BOARDS; card++) {
899 if ((ports = MoxaPortsOfCard(card)) <= 0)
901 ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
902 for (i = 0; i < ports; i++, ch++) {
903 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
905 if (!(ch->statusflags & THROTTLE) &&
906 (MoxaPortRxQueue(ch->port) > 0))
908 if ((tp = ch->tty) == 0)
910 if (ch->statusflags & LOWWAIT) {
911 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
913 ch->statusflags &= ~LOWWAIT;
918 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
919 tty_insert_flip_char(tp, 0, TTY_BREAK);
920 tty_schedule_flip(tp);
922 if (MoxaPortDCDChange(ch->port)) {
923 if (ch->asyncflags & ASYNC_CHECK_CD) {
924 if (MoxaPortDCDON(ch->port))
925 wake_up_interruptible(&ch->open_wait);
927 set_bit(MOXA_EVENT_HANGUP, &ch->event);
928 schedule_work(&ch->tqueue);
935 moxaTimer.function = moxa_poll;
936 moxaTimer.expires = jiffies + (HZ / 50);
938 add_timer(&moxaTimer);
941 /******************************************************************************/
943 static void set_tty_param(struct tty_struct *tty)
945 register struct ktermios *ts;
947 int rts, cts, txflow, rxflow, xany;
949 ch = (struct moxa_str *) tty->driver_data;
951 if (ts->c_cflag & CLOCAL)
952 ch->asyncflags &= ~ASYNC_CHECK_CD;
954 ch->asyncflags |= ASYNC_CHECK_CD;
955 rts = cts = txflow = rxflow = xany = 0;
956 if (ts->c_cflag & CRTSCTS)
958 if (ts->c_iflag & IXON)
960 if (ts->c_iflag & IXOFF)
962 if (ts->c_iflag & IXANY)
964 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
965 MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty));
968 static int block_till_ready(struct tty_struct *tty, struct file *filp,
971 DECLARE_WAITQUEUE(wait,current);
974 int do_clocal = C_CLOCAL(tty);
977 * If the device is in the middle of being closed, then block
978 * until it's done, and then try again.
980 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
981 if (ch->asyncflags & ASYNC_CLOSING)
982 interruptible_sleep_on(&ch->close_wait);
983 #ifdef SERIAL_DO_RESTART
984 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
987 return (-ERESTARTSYS);
993 * If non-blocking mode is set, then make the check up front
996 if (filp->f_flags & O_NONBLOCK) {
997 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1001 * Block waiting for the carrier detect and the line to become free
1004 add_wait_queue(&ch->open_wait, &wait);
1005 #ifdef SERIAL_DEBUG_OPEN
1006 printk("block_til_ready before block: ttys%d, count = %d\n",
1007 ch->line, ch->count);
1009 spin_lock_irqsave(&moxa_lock, flags);
1010 if (!tty_hung_up_p(filp))
1013 spin_unlock_irqrestore(&moxa_lock, flags);
1016 set_current_state(TASK_INTERRUPTIBLE);
1017 if (tty_hung_up_p(filp) ||
1018 !(ch->asyncflags & ASYNC_INITIALIZED)) {
1019 #ifdef SERIAL_DO_RESTART
1020 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1023 retval = -ERESTARTSYS;
1029 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
1030 MoxaPortDCDON(ch->port)))
1033 if (signal_pending(current)) {
1034 retval = -ERESTARTSYS;
1039 set_current_state(TASK_RUNNING);
1040 remove_wait_queue(&ch->open_wait, &wait);
1042 spin_lock_irqsave(&moxa_lock, flags);
1043 if (!tty_hung_up_p(filp))
1046 spin_unlock_irqrestore(&moxa_lock, flags);
1047 #ifdef SERIAL_DEBUG_OPEN
1048 printk("block_til_ready after blocking: ttys%d, count = %d\n",
1049 ch->line, ch->count);
1053 /* FIXME: review to see if we need to use set_bit on these */
1054 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1058 static void setup_empty_event(struct tty_struct *tty)
1060 struct moxa_str *ch = tty->driver_data;
1061 unsigned long flags;
1063 spin_lock_irqsave(&moxa_lock, flags);
1064 ch->statusflags |= EMPTYWAIT;
1065 moxaEmptyTimer_on[ch->port] = 0;
1066 del_timer(&moxaEmptyTimer[ch->port]);
1067 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1068 moxaEmptyTimer_on[ch->port] = 1;
1069 add_timer(&moxaEmptyTimer[ch->port]);
1070 spin_unlock_irqrestore(&moxa_lock, flags);
1073 static void check_xmit_empty(unsigned long data)
1075 struct moxa_str *ch;
1077 ch = (struct moxa_str *) data;
1078 moxaEmptyTimer_on[ch->port] = 0;
1079 del_timer(&moxaEmptyTimer[ch->port]);
1080 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1081 if (MoxaPortTxQueue(ch->port) == 0) {
1082 ch->statusflags &= ~EMPTYWAIT;
1083 tty_wakeup(ch->tty);
1086 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1087 moxaEmptyTimer_on[ch->port] = 1;
1088 add_timer(&moxaEmptyTimer[ch->port]);
1090 ch->statusflags &= ~EMPTYWAIT;
1093 static void shut_down(struct moxa_str *ch)
1095 struct tty_struct *tp;
1097 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1102 MoxaPortDisable(ch->port);
1105 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1107 if (tp->termios->c_cflag & HUPCL)
1108 MoxaPortLineCtrl(ch->port, 0, 0);
1110 ch->asyncflags &= ~ASYNC_INITIALIZED;
1113 static void receive_data(struct moxa_str *ch)
1115 struct tty_struct *tp;
1116 struct ktermios *ts;
1117 unsigned long flags;
1123 /**************************************************
1124 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1125 *****************************************************/
1127 MoxaPortFlushData(ch->port, 0);
1130 spin_lock_irqsave(&moxa_lock, flags);
1131 MoxaPortReadData(ch->port, tp);
1132 spin_unlock_irqrestore(&moxa_lock, flags);
1133 tty_schedule_flip(tp);
1136 #define Magic_code 0x404
1139 * System Configuration
1142 * for C218 BIOS initialization
1144 #define C218_ConfBase 0x800
1145 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1146 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1147 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1148 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1149 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1150 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1151 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1152 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1153 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1154 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1156 #define C218_LoadBuf 0x0F00
1157 #define C218_KeyCode 0x218
1158 #define CP204J_KeyCode 0x204
1161 * for C320 BIOS initialization
1163 #define C320_ConfBase 0x800
1164 #define C320_LoadBuf 0x0f00
1165 #define STS_init 0x05 /* for C320_status */
1167 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1168 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1169 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1170 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1171 #define C320check_sum C320_ConfBase + 8 /* WORD */
1172 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1173 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1174 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1176 #define C320_KeyCode 0x320
1178 #define FixPage_addr 0x0000 /* starting addr of static page */
1179 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1180 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1181 #define Control_reg 0x1ff0 /* select page and reset control */
1182 #define HW_reset 0x80
1187 #define FC_CardReset 0x80
1188 #define FC_ChannelReset 1 /* C320 firmware not supported */
1189 #define FC_EnableCH 2
1190 #define FC_DisableCH 3
1191 #define FC_SetParam 4
1192 #define FC_SetMode 5
1193 #define FC_SetRate 6
1194 #define FC_LineControl 7
1195 #define FC_LineStatus 8
1196 #define FC_XmitControl 9
1197 #define FC_FlushQueue 10
1198 #define FC_SendBreak 11
1199 #define FC_StopBreak 12
1200 #define FC_LoopbackON 13
1201 #define FC_LoopbackOFF 14
1202 #define FC_ClrIrqTable 15
1203 #define FC_SendXon 16
1204 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1205 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1206 #define FC_SetBreakIrq 19
1207 #define FC_SetLineIrq 20
1208 #define FC_SetFlowCtl 21
1209 #define FC_GenIrq 22
1210 #define FC_InCD180 23
1211 #define FC_OutCD180 24
1212 #define FC_InUARTreg 23
1213 #define FC_OutUARTreg 24
1214 #define FC_SetXonXoff 25
1215 #define FC_OutCD180CCR 26
1216 #define FC_ExtIQueue 27
1217 #define FC_ExtOQueue 28
1218 #define FC_ClrLineIrq 29
1219 #define FC_HWFlowCtl 30
1220 #define FC_GetClockRate 35
1221 #define FC_SetBaud 36
1222 #define FC_SetDataMode 41
1223 #define FC_GetCCSR 43
1224 #define FC_GetDataError 45
1225 #define FC_RxControl 50
1226 #define FC_ImmSend 51
1227 #define FC_SetXonState 52
1228 #define FC_SetXoffState 53
1229 #define FC_SetRxFIFOTrig 54
1230 #define FC_SetTxFIFOCnt 55
1231 #define FC_UnixRate 56
1232 #define FC_UnixResetTimer 57
1234 #define RxFIFOTrig1 0
1235 #define RxFIFOTrig4 1
1236 #define RxFIFOTrig8 2
1237 #define RxFIFOTrig14 3
1242 #define DRAM_global 0
1243 #define INT_data (DRAM_global + 0)
1244 #define Config_base (DRAM_global + 0x108)
1246 #define IRQindex (INT_data + 0)
1247 #define IRQpending (INT_data + 4)
1248 #define IRQtable (INT_data + 8)
1253 #define IntrRx 0x01 /* receiver data O.K. */
1254 #define IntrTx 0x02 /* transmit buffer empty */
1255 #define IntrFunc 0x04 /* function complete */
1256 #define IntrBreak 0x08 /* received break */
1257 #define IntrLine 0x10 /* line status change
1259 #define IntrIntr 0x20 /* received INTR code */
1260 #define IntrQuit 0x40 /* received QUIT code */
1261 #define IntrEOF 0x80 /* received EOF code */
1263 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1264 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1266 #define Magic_no (Config_base + 0)
1267 #define Card_model_no (Config_base + 2)
1268 #define Total_ports (Config_base + 4)
1269 #define Module_cnt (Config_base + 8)
1270 #define Module_no (Config_base + 10)
1271 #define Timer_10ms (Config_base + 14)
1272 #define Disable_IRQ (Config_base + 20)
1273 #define TMS320_PORT1 (Config_base + 22)
1274 #define TMS320_PORT2 (Config_base + 24)
1275 #define TMS320_CLOCK (Config_base + 26)
1278 * DATA BUFFER in DRAM
1280 #define Extern_table 0x400 /* Base address of the external table
1281 (24 words * 64) total 3K bytes
1282 (24 words * 128) total 6K bytes */
1283 #define Extern_size 0x60 /* 96 bytes */
1284 #define RXrptr 0x00 /* read pointer for RX buffer */
1285 #define RXwptr 0x02 /* write pointer for RX buffer */
1286 #define TXrptr 0x04 /* read pointer for TX buffer */
1287 #define TXwptr 0x06 /* write pointer for TX buffer */
1288 #define HostStat 0x08 /* IRQ flag and general flag */
1289 #define FlagStat 0x0A
1290 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1291 /* x x x x | | | | */
1292 /* | | | + CTS flow */
1293 /* | | +--- RTS flow */
1294 /* | +------ TX Xon/Xoff */
1295 /* +--------- RX Xon/Xoff */
1296 #define Break_cnt 0x0E /* received break count */
1297 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1298 #define RX_mask 0x12
1299 #define TX_mask 0x14
1300 #define Ofs_rxb 0x16
1301 #define Ofs_txb 0x18
1302 #define Page_rxb 0x1A
1303 #define Page_txb 0x1C
1304 #define EndPage_rxb 0x1E
1305 #define EndPage_txb 0x20
1306 #define Data_error 0x22
1307 #define RxTrigger 0x28
1308 #define TxTrigger 0x2a
1310 #define rRXwptr 0x34
1311 #define Low_water 0x36
1313 #define FuncCode 0x40
1314 #define FuncArg 0x42
1315 #define FuncArg1 0x44
1317 #define C218rx_size 0x2000 /* 8K bytes */
1318 #define C218tx_size 0x8000 /* 32K bytes */
1320 #define C218rx_mask (C218rx_size - 1)
1321 #define C218tx_mask (C218tx_size - 1)
1323 #define C320p8rx_size 0x2000
1324 #define C320p8tx_size 0x8000
1325 #define C320p8rx_mask (C320p8rx_size - 1)
1326 #define C320p8tx_mask (C320p8tx_size - 1)
1328 #define C320p16rx_size 0x2000
1329 #define C320p16tx_size 0x4000
1330 #define C320p16rx_mask (C320p16rx_size - 1)
1331 #define C320p16tx_mask (C320p16tx_size - 1)
1333 #define C320p24rx_size 0x2000
1334 #define C320p24tx_size 0x2000
1335 #define C320p24rx_mask (C320p24rx_size - 1)
1336 #define C320p24tx_mask (C320p24tx_size - 1)
1338 #define C320p32rx_size 0x1000
1339 #define C320p32tx_size 0x1000
1340 #define C320p32rx_mask (C320p32rx_size - 1)
1341 #define C320p32tx_mask (C320p32tx_size - 1)
1343 #define Page_size 0x2000
1344 #define Page_mask (Page_size - 1)
1345 #define C218rx_spage 3
1346 #define C218tx_spage 4
1347 #define C218rx_pageno 1
1348 #define C218tx_pageno 4
1349 #define C218buf_pageno 5
1351 #define C320p8rx_spage 3
1352 #define C320p8tx_spage 4
1353 #define C320p8rx_pgno 1
1354 #define C320p8tx_pgno 4
1355 #define C320p8buf_pgno 5
1357 #define C320p16rx_spage 3
1358 #define C320p16tx_spage 4
1359 #define C320p16rx_pgno 1
1360 #define C320p16tx_pgno 2
1361 #define C320p16buf_pgno 3
1363 #define C320p24rx_spage 3
1364 #define C320p24tx_spage 4
1365 #define C320p24rx_pgno 1
1366 #define C320p24tx_pgno 1
1367 #define C320p24buf_pgno 2
1369 #define C320p32rx_spage 3
1370 #define C320p32tx_ofs C320p32rx_size
1371 #define C320p32tx_spage 3
1372 #define C320p32buf_pgno 1
1377 #define WakeupRx 0x01
1378 #define WakeupTx 0x02
1379 #define WakeupBreak 0x08
1380 #define WakeupLine 0x10
1381 #define WakeupIntr 0x20
1382 #define WakeupQuit 0x40
1383 #define WakeupEOF 0x80 /* used in VTIME control */
1384 #define WakeupRxTrigger 0x100
1385 #define WakeupTxTrigger 0x200
1389 #define Rx_over 0x01
1390 #define Xoff_state 0x02
1391 #define Tx_flowOff 0x04
1392 #define Tx_enable 0x08
1393 #define CTS_state 0x10
1394 #define DSR_state 0x20
1395 #define DCD_state 0x80
1399 #define CTS_FlowCtl 1
1400 #define RTS_FlowCtl 2
1401 #define Tx_FlowCtl 4
1402 #define Rx_FlowCtl 8
1403 #define IXM_IXANY 0x10
1405 #define LowWater 128
1413 /* mode definition */
1419 #define MX_STOP1 0x00
1420 #define MX_STOP15 0x04
1421 #define MX_STOP2 0x08
1423 #define MX_PARNONE 0x00
1424 #define MX_PAREVEN 0x40
1425 #define MX_PARODD 0xC0
1430 #define QueryPort MAX_PORTS
1436 int rxcnt[MAX_PORTS];
1437 int txcnt[MAX_PORTS];
1439 typedef struct mon_str mon_st;
1441 #define DCD_changed 0x01
1442 #define DCD_oldstate 0x80
1444 static unsigned char moxaBuff[10240];
1445 static void __iomem *moxaIntNdx[MAX_BOARDS];
1446 static void __iomem *moxaIntPend[MAX_BOARDS];
1447 static void __iomem *moxaIntTable[MAX_BOARDS];
1448 static char moxaChkPort[MAX_PORTS];
1449 static char moxaLineCtrl[MAX_PORTS];
1450 static void __iomem *moxaTableAddr[MAX_PORTS];
1451 static long moxaCurBaud[MAX_PORTS];
1452 static char moxaDCDState[MAX_PORTS];
1453 static char moxaLowChkFlag[MAX_PORTS];
1454 static int moxaLowWaterChk;
1455 static int moxaCard;
1456 static mon_st moxaLog;
1457 static int moxaFuncTout = HZ / 2;
1458 static ushort moxaBreakCnt[MAX_PORTS];
1460 static void moxadelay(int);
1461 static void moxafunc(void __iomem *, int, ushort);
1462 static void wait_finish(void __iomem *);
1463 static void low_water_check(void __iomem *);
1464 static int moxaloadbios(int, unsigned char __user *, int);
1465 static int moxafindcard(int);
1466 static int moxaload320b(int, unsigned char __user *, int);
1467 static int moxaloadcode(int, unsigned char __user *, int);
1468 static int moxaloadc218(int, void __iomem *, int);
1469 static int moxaloadc320(int, void __iomem *, int, int *);
1471 /*****************************************************************************
1472 * Driver level functions: *
1473 * 1. MoxaDriverInit(void); *
1474 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1475 * 3. MoxaDriverPoll(void); *
1476 *****************************************************************************/
1477 void MoxaDriverInit(void)
1481 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1484 moxaLowWaterChk = 0;
1485 for (i = 0; i < MAX_PORTS; i++) {
1487 moxaLowChkFlag[i] = 0;
1488 moxaLineCtrl[i] = 0;
1489 moxaLog.rxcnt[i] = 0;
1490 moxaLog.txcnt[i] = 0;
1495 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1496 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1497 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1498 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1499 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1500 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1501 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1502 #define MOXA_GETDATACOUNT (MOXA + 23)
1503 #define MOXA_GET_IOQUEUE (MOXA + 27)
1504 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1505 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1506 #define MOXA_GET_MAJOR (MOXA + 63)
1507 #define MOXA_GET_CUMAJOR (MOXA + 64)
1508 #define MOXA_GETMSTATUS (MOXA + 65)
1522 static struct moxaq_str temp_queue[MAX_PORTS];
1523 static struct dl_str dltmp;
1525 void MoxaPortFlushData(int port, int mode)
1527 void __iomem *ofsAddr;
1528 if ((mode < 0) || (mode > 2))
1530 ofsAddr = moxaTableAddr[port];
1531 moxafunc(ofsAddr, FC_FlushQueue, mode);
1533 moxaLowChkFlag[port] = 0;
1534 low_water_check(ofsAddr);
1538 int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1542 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1543 void __user *argp = (void __user *)arg;
1545 if (port == QueryPort) {
1546 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1547 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1548 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1549 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1550 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1555 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS * sizeof(moxa_board_conf)))
1558 case MOXA_INIT_DRIVER:
1559 if ((int) arg == 0x404)
1562 case MOXA_GETDATACOUNT:
1563 moxaLog.tick = jiffies;
1564 if(copy_to_user(argp, &moxaLog, sizeof(mon_st)))
1567 case MOXA_FLUSH_QUEUE:
1568 MoxaPortFlushData(port, arg);
1570 case MOXA_GET_IOQUEUE:
1571 for (i = 0; i < MAX_PORTS; i++) {
1572 if (moxaChkPort[i]) {
1573 temp_queue[i].inq = MoxaPortRxQueue(i);
1574 temp_queue[i].outq = MoxaPortTxQueue(i);
1577 if(copy_to_user(argp, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
1580 case MOXA_GET_OQUEUE:
1581 i = MoxaPortTxQueue(port);
1582 return put_user(i, (unsigned long __user *)argp);
1583 case MOXA_GET_IQUEUE:
1584 i = MoxaPortRxQueue(port);
1585 return put_user(i, (unsigned long __user *)argp);
1586 case MOXA_GET_MAJOR:
1587 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1590 case MOXA_GET_CUMAJOR:
1592 if(copy_to_user(argp, &i, sizeof(int)))
1595 case MOXA_GETMSTATUS:
1596 for (i = 0; i < MAX_PORTS; i++) {
1598 GMStatus[i].dcd = 0;
1599 GMStatus[i].dsr = 0;
1600 GMStatus[i].cts = 0;
1601 if (!moxaChkPort[i]) {
1604 status = MoxaPortLineStatus(moxaChannels[i].port);
1606 GMStatus[i].cts = 1;
1608 GMStatus[i].dsr = 1;
1610 GMStatus[i].dcd = 1;
1613 if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
1614 GMStatus[i].cflag = moxaChannels[i].cflag;
1616 GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
1618 if(copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
1622 return (-ENOIOCTLCMD);
1623 case MOXA_LOAD_BIOS:
1624 case MOXA_FIND_BOARD:
1625 case MOXA_LOAD_C320B:
1626 case MOXA_LOAD_CODE:
1627 if (!capable(CAP_SYS_RAWIO))
1632 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1634 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
1639 case MOXA_LOAD_BIOS:
1640 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1642 case MOXA_FIND_BOARD:
1643 return moxafindcard(dltmp.cardno);
1644 case MOXA_LOAD_C320B:
1645 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1646 default: /* to keep gcc happy */
1648 case MOXA_LOAD_CODE:
1649 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1657 int MoxaDriverPoll(void)
1659 register ushort temp;
1661 void __iomem *ofsAddr;
1667 for (card = 0; card < MAX_BOARDS; card++) {
1668 if (loadstat[card] == 0)
1670 if ((ports = moxa_boards[card].numPorts) == 0)
1672 if (readb(moxaIntPend[card]) == 0xff) {
1673 ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
1674 p = card * MAX_PORTS_PER_BOARD;
1676 for (port = 0; port < ports; port += 2, p++) {
1677 if ((temp = readw(ip + port)) != 0) {
1678 writew(0, ip + port);
1679 ofsAddr = moxaTableAddr[p];
1681 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1682 if (temp & IntrBreak) {
1685 if (temp & IntrLine) {
1686 if (readb(ofsAddr + FlagStat) & DCD_state) {
1687 if ((moxaDCDState[p] & DCD_oldstate) == 0)
1688 moxaDCDState[p] = (DCD_oldstate |
1691 if (moxaDCDState[p] & DCD_oldstate)
1692 moxaDCDState[p] = DCD_changed;
1697 writeb(0, moxaIntPend[card]);
1699 if (moxaLowWaterChk) {
1700 p = card * MAX_PORTS_PER_BOARD;
1701 for (port = 0; port < ports; port++, p++) {
1702 if (moxaLowChkFlag[p]) {
1703 moxaLowChkFlag[p] = 0;
1704 ofsAddr = moxaTableAddr[p];
1705 low_water_check(ofsAddr);
1710 moxaLowWaterChk = 0;
1714 /*****************************************************************************
1715 * Card level function: *
1716 * 1. MoxaPortsOfCard(int cardno); *
1717 *****************************************************************************/
1718 int MoxaPortsOfCard(int cardno)
1721 if (moxa_boards[cardno].boardType == 0)
1723 return (moxa_boards[cardno].numPorts);
1726 /*****************************************************************************
1727 * Port level functions: *
1728 * 1. MoxaPortIsValid(int port); *
1729 * 2. MoxaPortEnable(int port); *
1730 * 3. MoxaPortDisable(int port); *
1731 * 4. MoxaPortGetMaxBaud(int port); *
1732 * 5. MoxaPortGetCurBaud(int port); *
1733 * 6. MoxaPortSetBaud(int port, long baud); *
1734 * 7. MoxaPortSetMode(int port, int databit, int stopbit, int parity); *
1735 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1736 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1737 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1738 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1739 * 12. MoxaPortLineStatus(int port); *
1740 * 13. MoxaPortDCDChange(int port); *
1741 * 14. MoxaPortDCDON(int port); *
1742 * 15. MoxaPortFlushData(int port, int mode); *
1743 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1744 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1745 * 18. MoxaPortTxBufSize(int port); *
1746 * 19. MoxaPortRxBufSize(int port); *
1747 * 20. MoxaPortTxQueue(int port); *
1748 * 21. MoxaPortTxFree(int port); *
1749 * 22. MoxaPortRxQueue(int port); *
1750 * 23. MoxaPortRxFree(int port); *
1751 * 24. MoxaPortTxDisable(int port); *
1752 * 25. MoxaPortTxEnable(int port); *
1753 * 26. MoxaPortGetBrkCnt(int port); *
1754 * 27. MoxaPortResetBrkCnt(int port); *
1755 * 28. MoxaPortSetXonXoff(int port, int xonValue, int xoffValue); *
1756 * 29. MoxaPortIsTxHold(int port); *
1757 * 30. MoxaPortSendBreak(int port, int ticks); *
1758 *****************************************************************************/
1760 * Moxa Port Number Description:
1762 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1763 * the port number using in MOXA driver functions will be 0 to 31 for
1764 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1765 * to 127 for fourth. For example, if you setup three MOXA boards,
1766 * first board is C218, second board is C320-16 and third board is
1767 * C320-32. The port number of first board (C218 - 8 ports) is from
1768 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1769 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1770 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1771 * 127 will be invalid.
1774 * Moxa Functions Description:
1776 * Function 1: Driver initialization routine, this routine must be
1777 * called when initialized driver.
1779 * void MoxaDriverInit();
1782 * Function 2: Moxa driver private IOCTL command processing.
1784 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1786 * unsigned int cmd : IOCTL command
1787 * unsigned long arg : IOCTL argument
1788 * int port : port number (0 - 127)
1795 * Function 3: Moxa driver polling process routine.
1797 * int MoxaDriverPoll(void);
1799 * return: 0 ; polling O.K.
1800 * -1 : no any Moxa card.
1803 * Function 4: Get the ports of this card.
1805 * int MoxaPortsOfCard(int cardno);
1807 * int cardno : card number (0 - 3)
1809 * return: 0 : this card is invalid
1813 * Function 5: Check this port is valid or invalid
1815 * int MoxaPortIsValid(int port);
1816 * int port : port number (0 - 127, ref port description)
1818 * return: 0 : this port is invalid
1819 * 1 : this port is valid
1822 * Function 6: Enable this port to start Tx/Rx data.
1824 * void MoxaPortEnable(int port);
1825 * int port : port number (0 - 127)
1828 * Function 7: Disable this port
1830 * void MoxaPortDisable(int port);
1831 * int port : port number (0 - 127)
1834 * Function 8: Get the maximun available baud rate of this port.
1836 * long MoxaPortGetMaxBaud(int port);
1837 * int port : port number (0 - 127)
1839 * return: 0 : this port is invalid
1840 * 38400/57600/115200 bps
1843 * Function 9: Get the current baud rate of this port.
1845 * long MoxaPortGetCurBaud(int port);
1846 * int port : port number (0 - 127)
1848 * return: 0 : this port is invalid
1852 * Function 10: Setting baud rate of this port.
1854 * long MoxaPortSetBaud(int port, long baud);
1855 * int port : port number (0 - 127)
1856 * long baud : baud rate (50 - 115200)
1858 * return: 0 : this port is invalid or baud < 50
1859 * 50 - 115200 : the real baud rate set to the port, if
1860 * the argument baud is large than maximun
1861 * available baud rate, the real setting
1862 * baud rate will be the maximun baud rate.
1865 * Function 11: Setting the data-bits/stop-bits/parity of this port
1867 * int MoxaPortSetMode(int port, int databits, int stopbits, int parity);
1868 * int port : port number (0 - 127)
1869 * int databits : data bits (8/7/6/5)
1870 * int stopbits : stop bits (2/1/0, 0 show 1.5 stop bits)
1871 int parity : parity (0:None,1:Odd,2:Even,3:Mark,4:Space)
1873 * return: -1 : invalid parameter
1877 * Function 12: Configure the port.
1879 * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud);
1880 * int port : port number (0 - 127)
1881 * struct ktermios * termio : termio structure pointer
1882 * speed_t baud : baud rate
1884 * return: -1 : this port is invalid or termio == NULL
1888 * Function 13: Get the DTR/RTS state of this port.
1890 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1891 * int port : port number (0 - 127)
1892 * int * dtrState : pointer to INT to receive the current DTR
1893 * state. (if NULL, this function will not
1894 * write to this address)
1895 * int * rtsState : pointer to INT to receive the current RTS
1896 * state. (if NULL, this function will not
1897 * write to this address)
1899 * return: -1 : this port is invalid
1903 * Function 14: Setting the DTR/RTS output state of this port.
1905 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1906 * int port : port number (0 - 127)
1907 * int dtrState : DTR output state (0: off, 1: on)
1908 * int rtsState : RTS output state (0: off, 1: on)
1911 * Function 15: Setting the flow control of this port.
1913 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1914 * int txFlow,int xany);
1915 * int port : port number (0 - 127)
1916 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1917 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1918 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1919 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1920 * int xany : S/W XANY flow control (0: no, 1: yes)
1923 * Function 16: Get ths line status of this port
1925 * int MoxaPortLineStatus(int port);
1926 * int port : port number (0 - 127)
1928 * return: Bit 0 - CTS state (0: off, 1: on)
1929 * Bit 1 - DSR state (0: off, 1: on)
1930 * Bit 2 - DCD state (0: off, 1: on)
1933 * Function 17: Check the DCD state has changed since the last read
1936 * int MoxaPortDCDChange(int port);
1937 * int port : port number (0 - 127)
1939 * return: 0 : no changed
1940 * 1 : DCD has changed
1943 * Function 18: Check ths current DCD state is ON or not.
1945 * int MoxaPortDCDON(int port);
1946 * int port : port number (0 - 127)
1948 * return: 0 : DCD off
1952 * Function 19: Flush the Rx/Tx buffer data of this port.
1954 * void MoxaPortFlushData(int port, int mode);
1955 * int port : port number (0 - 127)
1957 * 0 : flush the Rx buffer
1958 * 1 : flush the Tx buffer
1959 * 2 : flush the Rx and Tx buffer
1962 * Function 20: Write data.
1964 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
1965 * int port : port number (0 - 127)
1966 * unsigned char * buffer : pointer to write data buffer.
1967 * int length : write data length
1969 * return: 0 - length : real write data length
1972 * Function 21: Read data.
1974 * int MoxaPortReadData(int port, struct tty_struct *tty);
1975 * int port : port number (0 - 127)
1976 * struct tty_struct *tty : tty for data
1978 * return: 0 - length : real read data length
1981 * Function 22: Get the Tx buffer size of this port
1983 * int MoxaPortTxBufSize(int port);
1984 * int port : port number (0 - 127)
1986 * return: .. : Tx buffer size
1989 * Function 23: Get the Rx buffer size of this port
1991 * int MoxaPortRxBufSize(int port);
1992 * int port : port number (0 - 127)
1994 * return: .. : Rx buffer size
1997 * Function 24: Get the Tx buffer current queued data bytes
1999 * int MoxaPortTxQueue(int port);
2000 * int port : port number (0 - 127)
2002 * return: .. : Tx buffer current queued data bytes
2005 * Function 25: Get the Tx buffer current free space
2007 * int MoxaPortTxFree(int port);
2008 * int port : port number (0 - 127)
2010 * return: .. : Tx buffer current free space
2013 * Function 26: Get the Rx buffer current queued data bytes
2015 * int MoxaPortRxQueue(int port);
2016 * int port : port number (0 - 127)
2018 * return: .. : Rx buffer current queued data bytes
2021 * Function 27: Get the Rx buffer current free space
2023 * int MoxaPortRxFree(int port);
2024 * int port : port number (0 - 127)
2026 * return: .. : Rx buffer current free space
2029 * Function 28: Disable port data transmission.
2031 * void MoxaPortTxDisable(int port);
2032 * int port : port number (0 - 127)
2035 * Function 29: Enable port data transmission.
2037 * void MoxaPortTxEnable(int port);
2038 * int port : port number (0 - 127)
2041 * Function 30: Get the received BREAK signal count.
2043 * int MoxaPortGetBrkCnt(int port);
2044 * int port : port number (0 - 127)
2046 * return: 0 - .. : BREAK signal count
2049 * Function 31: Get the received BREAK signal count and reset it.
2051 * int MoxaPortResetBrkCnt(int port);
2052 * int port : port number (0 - 127)
2054 * return: 0 - .. : BREAK signal count
2057 * Function 32: Set the S/W flow control new XON/XOFF value, default
2058 * XON is 0x11 & XOFF is 0x13.
2060 * void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue);
2061 * int port : port number (0 - 127)
2062 * int xonValue : new XON value (0 - 255)
2063 * int xoffValue : new XOFF value (0 - 255)
2066 * Function 33: Check this port's transmission is hold by remote site
2067 * because the flow control.
2069 * int MoxaPortIsTxHold(int port);
2070 * int port : port number (0 - 127)
2072 * return: 0 : normal
2073 * 1 : hold by remote site
2076 * Function 34: Send out a BREAK signal.
2078 * void MoxaPortSendBreak(int port, int ms100);
2079 * int port : port number (0 - 127)
2080 * int ms100 : break signal time interval.
2081 * unit: 100 mini-second. if ms100 == 0, it will
2082 * send out a about 250 ms BREAK signal.
2085 int MoxaPortIsValid(int port)
2090 if (moxaChkPort[port] == 0)
2095 void MoxaPortEnable(int port)
2097 void __iomem *ofsAddr;
2098 int MoxaPortLineStatus(int);
2099 short lowwater = 512;
2101 ofsAddr = moxaTableAddr[port];
2102 writew(lowwater, ofsAddr + Low_water);
2103 moxaBreakCnt[port] = 0;
2104 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2105 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2106 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
2108 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
2111 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
2112 moxafunc(ofsAddr, FC_FlushQueue, 2);
2114 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
2115 MoxaPortLineStatus(port);
2118 void MoxaPortDisable(int port)
2120 void __iomem *ofsAddr = moxaTableAddr[port];
2122 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
2123 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
2124 writew(0, ofsAddr + HostStat);
2125 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
2128 long MoxaPortGetMaxBaud(int port)
2130 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2131 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
2138 long MoxaPortSetBaud(int port, long baud)
2140 void __iomem *ofsAddr;
2144 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
2146 ofsAddr = moxaTableAddr[port];
2150 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2151 else if (max == 57600L)
2152 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2154 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2156 moxafunc(ofsAddr, FC_SetBaud, val);
2158 moxaCurBaud[port] = baud;
2162 int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud)
2164 void __iomem *ofsAddr;
2168 if (moxaChkPort[port] == 0 || termio == 0)
2170 ofsAddr = moxaTableAddr[port];
2171 cflag = termio->c_cflag; /* termio->c_cflag */
2173 mode = termio->c_cflag & CSIZE;
2176 else if (mode == CS6)
2178 else if (mode == CS7)
2180 else if (mode == CS8)
2183 if (termio->c_cflag & CSTOPB) {
2191 if (termio->c_cflag & PARENB) {
2192 if (termio->c_cflag & PARODD)
2199 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2201 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2202 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2203 if (baud >= 921600L)
2206 MoxaPortSetBaud(port, baud);
2208 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2209 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2210 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2211 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2212 wait_finish(ofsAddr);
2218 int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2221 if (!MoxaPortIsValid(port))
2224 if (moxaLineCtrl[port] & DTR_ON)
2230 if (moxaLineCtrl[port] & RTS_ON)
2238 void MoxaPortLineCtrl(int port, int dtr, int rts)
2240 void __iomem *ofsAddr;
2243 ofsAddr = moxaTableAddr[port];
2249 moxaLineCtrl[port] = mode;
2250 moxafunc(ofsAddr, FC_LineControl, mode);
2253 void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2255 void __iomem *ofsAddr;
2258 ofsAddr = moxaTableAddr[port];
2261 mode |= RTS_FlowCtl;
2263 mode |= CTS_FlowCtl;
2270 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2273 int MoxaPortLineStatus(int port)
2275 void __iomem *ofsAddr;
2278 ofsAddr = moxaTableAddr[port];
2279 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2280 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2281 moxafunc(ofsAddr, FC_LineStatus, 0);
2282 val = readw(ofsAddr + FuncArg);
2284 val = readw(ofsAddr + FlagStat) >> 4;
2289 if ((moxaDCDState[port] & DCD_oldstate) == 0)
2290 moxaDCDState[port] = (DCD_oldstate | DCD_changed);
2292 if (moxaDCDState[port] & DCD_oldstate)
2293 moxaDCDState[port] = DCD_changed;
2299 int MoxaPortDCDChange(int port)
2303 if (moxaChkPort[port] == 0)
2305 n = moxaDCDState[port];
2306 moxaDCDState[port] &= ~DCD_changed;
2311 int MoxaPortDCDON(int port)
2315 if (moxaChkPort[port] == 0)
2317 if (moxaDCDState[port] & DCD_oldstate)
2326 int MoxaDumpMem(int port, unsigned char * buffer, int len)
2329 unsigned long baseAddr,ofsAddr,ofs;
2331 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2332 ofs = baseAddr + DynPage_addr + pageofs;
2335 for (i = 0; i < len; i++)
2336 buffer[i] = readb(ofs+i);
2341 int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2346 ushort head, tx_mask, spage, epage;
2347 ushort pageno, pageofs, bufhead;
2348 void __iomem *baseAddr, *ofsAddr, *ofs;
2350 ofsAddr = moxaTableAddr[port];
2351 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2352 tx_mask = readw(ofsAddr + TX_mask);
2353 spage = readw(ofsAddr + Page_txb);
2354 epage = readw(ofsAddr + EndPage_txb);
2355 tail = readw(ofsAddr + TXwptr);
2356 head = readw(ofsAddr + TXrptr);
2357 c = (head > tail) ? (head - tail - 1)
2358 : (head - tail + tx_mask);
2361 moxaLog.txcnt[port] += c;
2363 if (spage == epage) {
2364 bufhead = readw(ofsAddr + Ofs_txb);
2365 writew(spage, baseAddr + Control_reg);
2368 len = head - tail - 1;
2370 len = tx_mask + 1 - tail;
2371 len = (c > len) ? len : c;
2372 ofs = baseAddr + DynPage_addr + bufhead + tail;
2373 for (i = 0; i < len; i++)
2374 writeb(*buffer++, ofs + i);
2375 tail = (tail + len) & tx_mask;
2378 writew(tail, ofsAddr + TXwptr);
2381 pageno = spage + (tail >> 13);
2382 pageofs = tail & Page_mask;
2384 cnt = Page_size - pageofs;
2388 writeb(pageno, baseAddr + Control_reg);
2389 ofs = baseAddr + DynPage_addr + pageofs;
2390 for (i = 0; i < cnt; i++)
2391 writeb(*buffer++, ofs + i);
2393 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2396 if (++pageno == epage)
2401 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2405 int MoxaPortReadData(int port, struct tty_struct *tty)
2407 register ushort head, pageofs;
2408 int i, count, cnt, len, total, remain;
2409 ushort tail, rx_mask, spage, epage;
2410 ushort pageno, bufhead;
2411 void __iomem *baseAddr, *ofsAddr, *ofs;
2413 ofsAddr = moxaTableAddr[port];
2414 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2415 head = readw(ofsAddr + RXrptr);
2416 tail = readw(ofsAddr + RXwptr);
2417 rx_mask = readw(ofsAddr + RX_mask);
2418 spage = readw(ofsAddr + Page_rxb);
2419 epage = readw(ofsAddr + EndPage_rxb);
2420 count = (tail >= head) ? (tail - head)
2421 : (tail - head + rx_mask + 1);
2426 remain = count - total;
2427 moxaLog.rxcnt[port] += total;
2429 if (spage == epage) {
2430 bufhead = readw(ofsAddr + Ofs_rxb);
2431 writew(spage, baseAddr + Control_reg);
2436 len = rx_mask + 1 - head;
2437 len = (count > len) ? len : count;
2438 ofs = baseAddr + DynPage_addr + bufhead + head;
2439 for (i = 0; i < len; i++)
2440 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2441 head = (head + len) & rx_mask;
2444 writew(head, ofsAddr + RXrptr);
2447 pageno = spage + (head >> 13);
2448 pageofs = head & Page_mask;
2450 cnt = Page_size - pageofs;
2454 writew(pageno, baseAddr + Control_reg);
2455 ofs = baseAddr + DynPage_addr + pageofs;
2456 for (i = 0; i < cnt; i++)
2457 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2459 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2462 if (++pageno == epage)
2467 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2468 moxaLowWaterChk = 1;
2469 moxaLowChkFlag[port] = 1;
2475 int MoxaPortTxQueue(int port)
2477 void __iomem *ofsAddr;
2478 ushort rptr, wptr, mask;
2481 ofsAddr = moxaTableAddr[port];
2482 rptr = readw(ofsAddr + TXrptr);
2483 wptr = readw(ofsAddr + TXwptr);
2484 mask = readw(ofsAddr + TX_mask);
2485 len = (wptr - rptr) & mask;
2489 int MoxaPortTxFree(int port)
2491 void __iomem *ofsAddr;
2492 ushort rptr, wptr, mask;
2495 ofsAddr = moxaTableAddr[port];
2496 rptr = readw(ofsAddr + TXrptr);
2497 wptr = readw(ofsAddr + TXwptr);
2498 mask = readw(ofsAddr + TX_mask);
2499 len = mask - ((wptr - rptr) & mask);
2503 int MoxaPortRxQueue(int port)
2505 void __iomem *ofsAddr;
2506 ushort rptr, wptr, mask;
2509 ofsAddr = moxaTableAddr[port];
2510 rptr = readw(ofsAddr + RXrptr);
2511 wptr = readw(ofsAddr + RXwptr);
2512 mask = readw(ofsAddr + RX_mask);
2513 len = (wptr - rptr) & mask;
2518 void MoxaPortTxDisable(int port)
2520 void __iomem *ofsAddr;
2522 ofsAddr = moxaTableAddr[port];
2523 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2526 void MoxaPortTxEnable(int port)
2528 void __iomem *ofsAddr;
2530 ofsAddr = moxaTableAddr[port];
2531 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2535 int MoxaPortResetBrkCnt(int port)
2538 cnt = moxaBreakCnt[port];
2539 moxaBreakCnt[port] = 0;
2544 void MoxaPortSendBreak(int port, int ms100)
2546 void __iomem *ofsAddr;
2548 ofsAddr = moxaTableAddr[port];
2550 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2551 moxadelay(ms100 * (HZ / 10));
2553 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2554 moxadelay(HZ / 4); /* 250 ms */
2556 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2559 static int moxa_get_serial_info(struct moxa_str *info,
2560 struct serial_struct __user *retinfo)
2562 struct serial_struct tmp;
2564 memset(&tmp, 0, sizeof(tmp));
2565 tmp.type = info->type;
2566 tmp.line = info->port;
2569 tmp.flags = info->asyncflags;
2570 tmp.baud_base = 921600;
2571 tmp.close_delay = info->close_delay;
2572 tmp.closing_wait = info->closing_wait;
2573 tmp.custom_divisor = 0;
2575 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2581 static int moxa_set_serial_info(struct moxa_str *info,
2582 struct serial_struct __user *new_info)
2584 struct serial_struct new_serial;
2586 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2589 if ((new_serial.irq != 0) ||
2590 (new_serial.port != 0) ||
2591 // (new_serial.type != info->type) ||
2592 (new_serial.custom_divisor != 0) ||
2593 (new_serial.baud_base != 921600))
2596 if (!capable(CAP_SYS_ADMIN)) {
2597 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2598 (info->asyncflags & ~ASYNC_USR_MASK)))
2601 info->close_delay = new_serial.close_delay * HZ / 100;
2602 info->closing_wait = new_serial.closing_wait * HZ / 100;
2605 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2606 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2608 if (new_serial.type == PORT_16550A) {
2609 MoxaSetFifo(info->port, 1);
2611 MoxaSetFifo(info->port, 0);
2614 info->type = new_serial.type;
2620 /*****************************************************************************
2621 * Static local functions: *
2622 *****************************************************************************/
2624 * moxadelay - delays a specified number ticks
2626 static void moxadelay(int tick)
2628 unsigned long st, et;
2632 while (time_before(jiffies, et));
2635 static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
2638 writew(arg, ofsAddr + FuncArg);
2639 writew(cmd, ofsAddr + FuncCode);
2640 wait_finish(ofsAddr);
2643 static void wait_finish(void __iomem *ofsAddr)
2648 while (readw(ofsAddr + FuncCode) != 0) {
2650 if ((j - i) > moxaFuncTout) {
2656 static void low_water_check(void __iomem *ofsAddr)
2659 ushort rptr, wptr, mask;
2661 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2662 rptr = readw(ofsAddr + RXrptr);
2663 wptr = readw(ofsAddr + RXwptr);
2664 mask = readw(ofsAddr + RX_mask);
2665 len = (wptr - rptr) & mask;
2666 if (len <= Low_water)
2667 moxafunc(ofsAddr, FC_SendXon, 0);
2671 static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2673 void __iomem *baseAddr;
2676 if(copy_from_user(moxaBuff, tmp, len))
2678 baseAddr = moxaBaseAddr[cardno];
2679 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2680 moxadelay(1); /* delay 10 ms */
2681 for (i = 0; i < 4096; i++)
2682 writeb(0, baseAddr + i); /* clear fix page */
2683 for (i = 0; i < len; i++)
2684 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2685 writeb(0, baseAddr + Control_reg); /* restart */
2689 static int moxafindcard(int cardno)
2691 void __iomem *baseAddr;
2694 baseAddr = moxaBaseAddr[cardno];
2695 switch (moxa_boards[cardno].boardType) {
2696 case MOXA_BOARD_C218_ISA:
2697 case MOXA_BOARD_C218_PCI:
2698 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2702 case MOXA_BOARD_CP204J:
2703 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2708 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2711 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2718 static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2720 void __iomem *baseAddr;
2723 if(len > sizeof(moxaBuff))
2725 if(copy_from_user(moxaBuff, tmp, len))
2727 baseAddr = moxaBaseAddr[cardno];
2728 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2729 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2730 for (i = 0; i < 7168; i++)
2731 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2732 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2733 for (i = 0; i < (len - 7168); i++)
2734 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2738 static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2740 void __iomem *baseAddr, *ofsAddr;
2741 int retval, port, i;
2743 if(copy_from_user(moxaBuff, tmp, len))
2745 baseAddr = moxaBaseAddr[cardno];
2746 switch (moxa_boards[cardno].boardType) {
2747 case MOXA_BOARD_C218_ISA:
2748 case MOXA_BOARD_C218_PCI:
2749 case MOXA_BOARD_CP204J:
2750 retval = moxaloadc218(cardno, baseAddr, len);
2753 port = cardno * MAX_PORTS_PER_BOARD;
2754 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2755 moxaChkPort[port] = 1;
2756 moxaCurBaud[port] = 9600L;
2757 moxaDCDState[port] = 0;
2758 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2759 ofsAddr = moxaTableAddr[port];
2760 writew(C218rx_mask, ofsAddr + RX_mask);
2761 writew(C218tx_mask, ofsAddr + TX_mask);
2762 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2763 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2765 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2766 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2771 retval = moxaloadc320(cardno, baseAddr, len,
2772 &moxa_boards[cardno].numPorts);
2775 port = cardno * MAX_PORTS_PER_BOARD;
2776 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2777 moxaChkPort[port] = 1;
2778 moxaCurBaud[port] = 9600L;
2779 moxaDCDState[port] = 0;
2780 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2781 ofsAddr = moxaTableAddr[port];
2782 if (moxa_boards[cardno].numPorts == 8) {
2783 writew(C320p8rx_mask, ofsAddr + RX_mask);
2784 writew(C320p8tx_mask, ofsAddr + TX_mask);
2785 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2786 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2787 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2788 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2790 } else if (moxa_boards[cardno].numPorts == 16) {
2791 writew(C320p16rx_mask, ofsAddr + RX_mask);
2792 writew(C320p16tx_mask, ofsAddr + TX_mask);
2793 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2794 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2795 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2796 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2798 } else if (moxa_boards[cardno].numPorts == 24) {
2799 writew(C320p24rx_mask, ofsAddr + RX_mask);
2800 writew(C320p24tx_mask, ofsAddr + TX_mask);
2801 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2802 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2803 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2804 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2805 } else if (moxa_boards[cardno].numPorts == 32) {
2806 writew(C320p32rx_mask, ofsAddr + RX_mask);
2807 writew(C320p32tx_mask, ofsAddr + TX_mask);
2808 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2809 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2810 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2811 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2812 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2817 loadstat[cardno] = 1;
2821 static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
2824 int i, j, len1, len2;
2825 ushort usum, *ptr, keycode;
2827 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2828 keycode = CP204J_KeyCode;
2830 keycode = C218_KeyCode;
2833 ptr = (ushort *) moxaBuff;
2834 for (i = 0; i < len1; i++)
2835 usum += le16_to_cpu(*(ptr + i));
2841 len2 = (len1 > 2048) ? 2048 : len1;
2843 for (i = 0; i < len2 << 1; i++)
2844 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2847 writew(len2, baseAddr + C218DLoad_len);
2848 writew(0, baseAddr + C218_key);
2849 for (i = 0; i < 100; i++) {
2850 if (readw(baseAddr + C218_key) == keycode)
2852 moxadelay(1); /* delay 10 ms */
2854 if (readw(baseAddr + C218_key) != keycode) {
2858 writew(0, baseAddr + C218DLoad_len);
2859 writew(usum, baseAddr + C218check_sum);
2860 writew(0, baseAddr + C218_key);
2861 for (i = 0; i < 100; i++) {
2862 if (readw(baseAddr + C218_key) == keycode)
2864 moxadelay(1); /* delay 10 ms */
2867 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2868 if (readb(baseAddr + C218chksum_ok) != 1) {
2871 writew(0, baseAddr + C218_key);
2872 for (i = 0; i < 100; i++) {
2873 if (readw(baseAddr + Magic_no) == Magic_code)
2875 moxadelay(1); /* delay 10 ms */
2877 if (readw(baseAddr + Magic_no) != Magic_code) {
2880 writew(1, baseAddr + Disable_IRQ);
2881 writew(0, baseAddr + Magic_no);
2882 for (i = 0; i < 100; i++) {
2883 if (readw(baseAddr + Magic_no) == Magic_code)
2885 moxadelay(1); /* delay 10 ms */
2887 if (readw(baseAddr + Magic_no) != Magic_code) {
2891 moxaIntNdx[cardno] = baseAddr + IRQindex;
2892 moxaIntPend[cardno] = baseAddr + IRQpending;
2893 moxaIntTable[cardno] = baseAddr + IRQtable;
2897 static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
2900 int i, j, wlen, len2, retry;
2905 uptr = (ushort *) moxaBuff;
2906 for (i = 0; i < wlen; i++)
2907 usum += le16_to_cpu(uptr[i]);
2918 for (i = 0; i < len2; i++)
2919 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
2922 writew(len2, baseAddr + C320DLoad_len);
2923 writew(0, baseAddr + C320_key);
2924 for (i = 0; i < 10; i++) {
2925 if (readw(baseAddr + C320_key) == C320_KeyCode)
2929 if (readw(baseAddr + C320_key) != C320_KeyCode)
2932 writew(0, baseAddr + C320DLoad_len);
2933 writew(usum, baseAddr + C320check_sum);
2934 writew(0, baseAddr + C320_key);
2935 for (i = 0; i < 10; i++) {
2936 if (readw(baseAddr + C320_key) == C320_KeyCode)
2941 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
2942 if (readb(baseAddr + C320chksum_ok) != 1)
2944 writew(0, baseAddr + C320_key);
2945 for (i = 0; i < 600; i++) {
2946 if (readw(baseAddr + Magic_no) == Magic_code)
2950 if (readw(baseAddr + Magic_no) != Magic_code)
2953 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
2954 writew(0x3800, baseAddr + TMS320_PORT1);
2955 writew(0x3900, baseAddr + TMS320_PORT2);
2956 writew(28499, baseAddr + TMS320_CLOCK);
2958 writew(0x3200, baseAddr + TMS320_PORT1);
2959 writew(0x3400, baseAddr + TMS320_PORT2);
2960 writew(19999, baseAddr + TMS320_CLOCK);
2962 writew(1, baseAddr + Disable_IRQ);
2963 writew(0, baseAddr + Magic_no);
2964 for (i = 0; i < 500; i++) {
2965 if (readw(baseAddr + Magic_no) == Magic_code)
2969 if (readw(baseAddr + Magic_no) != Magic_code)
2972 j = readw(baseAddr + Module_cnt);
2976 writew(j, baseAddr + Module_no);
2977 writew(0, baseAddr + Magic_no);
2978 for (i = 0; i < 600; i++) {
2979 if (readw(baseAddr + Magic_no) == Magic_code)
2983 if (readw(baseAddr + Magic_no) != Magic_code)
2986 moxaIntNdx[cardno] = baseAddr + IRQindex;
2987 moxaIntPend[cardno] = baseAddr + IRQpending;
2988 moxaIntTable[cardno] = baseAddr + IRQtable;
2993 long MoxaPortGetCurBaud(int port)
2996 if (moxaChkPort[port] == 0)
2998 return (moxaCurBaud[port]);
3002 static void MoxaSetFifo(int port, int enable)
3004 void __iomem *ofsAddr = moxaTableAddr[port];
3007 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
3008 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
3010 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
3011 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
3016 int MoxaPortSetMode(int port, int databits, int stopbits, int parity)
3018 void __iomem *ofsAddr;
3041 break; /* stop bits 1.5 */
3070 ofsAddr = moxaTableAddr[port];
3071 moxafunc(ofsAddr, FC_SetMode, val);
3075 int MoxaPortTxBufSize(int port)
3077 void __iomem *ofsAddr;
3080 ofsAddr = moxaTableAddr[port];
3081 size = readw(ofsAddr + TX_mask);
3085 int MoxaPortRxBufSize(int port)
3087 void __iomem *ofsAddr;
3090 ofsAddr = moxaTableAddr[port];
3091 size = readw(ofsAddr + RX_mask);
3095 int MoxaPortRxFree(int port)
3097 void __iomem *ofsAddr;
3098 ushort rptr, wptr, mask;
3101 ofsAddr = moxaTableAddr[port];
3102 rptr = readw(ofsAddr + RXrptr);
3103 wptr = readw(ofsAddr + RXwptr);
3104 mask = readw(ofsAddr + RX_mask);
3105 len = mask - ((wptr - rptr) & mask);
3108 int MoxaPortGetBrkCnt(int port)
3110 return (moxaBreakCnt[port]);
3113 void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue)
3115 void __iomem *ofsAddr;
3117 ofsAddr = moxaTableAddr[port];
3118 writew(xonValue, ofsAddr + FuncArg);
3119 writew(xoffValue, ofsAddr + FuncArg1);
3120 writew(FC_SetXonXoff, ofsAddr + FuncCode);
3121 wait_finish(ofsAddr);
3124 int MoxaPortIsTxHold(int port)
3126 void __iomem *ofsAddr;
3129 ofsAddr = moxaTableAddr[port];
3130 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
3131 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
3132 moxafunc(ofsAddr, FC_GetCCSR, 0);
3133 val = readw(ofsAddr + FuncArg);
3137 if (readw(ofsAddr + FlagStat) & Tx_flowOff)