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MOXA linux-2.6.x / linux-2.6.9-uc0 from sdlinux-moxaart.tgz
[linux-2.6.9-moxart.git] / drivers / char / moxa.c
blob65e8d0a3d853e908f78bd86207260b8bbfadad16
1 /*****************************************************************************/
2 /*
3 * moxa.c -- MOXA Intellio family multiport serial driver.
4 *
5 * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com.tw).
6 *
7 * This code is loosely based on the Linux serial driver, written by
8 * Linus Torvalds, Theodore T'so and others.
9 *
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.
14 *
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.
19 *
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.
23 */
24
25 /*
26 * MOXA Intellio Series Driver
27 * for : LINUX
28 * date : 1999/1/7
29 * version : 5.1
30 */
31
32 #include <linux/config.h>
33 #include <linux/module.h>
34 #include <linux/types.h>
35 #include <linux/mm.h>
36 #include <linux/ioport.h>
37 #include <linux/errno.h>
38 #include <linux/signal.h>
39 #include <linux/sched.h>
40 #include <linux/timer.h>
41 #include <linux/interrupt.h>
42 #include <linux/tty.h>
43 #include <linux/tty_flip.h>
44 #include <linux/major.h>
45 #include <linux/string.h>
46 #include <linux/fcntl.h>
47 #include <linux/ptrace.h>
48 #include <linux/serial.h>
49 #include <linux/tty_driver.h>
50 #include <linux/delay.h>
51 #include <linux/pci.h>
52 #include <linux/init.h>
53
54 #include <asm/system.h>
55 #include <asm/io.h>
56 #include <asm/bitops.h>
57 #include <asm/uaccess.h>
58
59 #define MOXA_VERSION "5.1k"
60
61 #define MOXAMAJOR 172
62 #define MOXACUMAJOR 173
63
64 #define put_to_user(arg1, arg2) put_user(arg1, (unsigned long *)arg2)
65 #define get_from_user(arg1, arg2) get_user(arg1, (unsigned int *)arg2)
66
67 #define MAX_BOARDS 4 /* Don't change this value */
68 #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
69 #define MAX_PORTS 128 /* Don't change this value */
70
71 /*
72 * Define the Moxa PCI vendor and device IDs.
73 */
74 #define MOXA_BUS_TYPE_ISA 0
75 #define MOXA_BUS_TYPE_PCI 1
76
77 #ifndef PCI_VENDOR_ID_MOXA
78 #define PCI_VENDOR_ID_MOXA 0x1393
79 #endif
80 #ifndef PCI_DEVICE_ID_CP204J
81 #define PCI_DEVICE_ID_CP204J 0x2040
82 #endif
83 #ifndef PCI_DEVICE_ID_C218
84 #define PCI_DEVICE_ID_C218 0x2180
85 #endif
86 #ifndef PCI_DEVICE_ID_C320
87 #define PCI_DEVICE_ID_C320 0x3200
88 #endif
89
90 enum {
91 MOXA_BOARD_C218_PCI = 1,
92 MOXA_BOARD_C218_ISA,
93 MOXA_BOARD_C320_PCI,
94 MOXA_BOARD_C320_ISA,
95 MOXA_BOARD_CP204J,
96 };
97
98 static char *moxa_brdname[] =
99 {
100 "C218 Turbo PCI series",
101 "C218 Turbo ISA series",
102 "C320 Turbo PCI series",
103 "C320 Turbo ISA series",
104 "CP-204J series",
105 };
106
107 #ifdef CONFIG_PCI
108 static struct pci_device_id moxa_pcibrds[] = {
109 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C218, PCI_ANY_ID, PCI_ANY_ID,
110 0, 0, MOXA_BOARD_C218_PCI },
111 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C320, PCI_ANY_ID, PCI_ANY_ID,
112 0, 0, MOXA_BOARD_C320_PCI },
113 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_CP204J, PCI_ANY_ID, PCI_ANY_ID,
114 0, 0, MOXA_BOARD_CP204J },
115 { 0 }
116 };
117 MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
118 #endif /* CONFIG_PCI */
119
120 typedef struct _moxa_isa_board_conf {
121 int boardType;
122 int numPorts;
123 unsigned long baseAddr;
124 } moxa_isa_board_conf;
125
126 static moxa_isa_board_conf moxa_isa_boards[] =
127 {
128 /* {MOXA_BOARD_C218_ISA,8,0xDC000}, */
129 };
130
131 typedef struct _moxa_pci_devinfo {
132 ushort busNum;
133 ushort devNum;
134 } moxa_pci_devinfo;
135
136 typedef struct _moxa_board_conf {
137 int boardType;
138 int numPorts;
139 unsigned long baseAddr;
140 int busType;
141 moxa_pci_devinfo pciInfo;
142 } moxa_board_conf;
143
144 static moxa_board_conf moxa_boards[MAX_BOARDS];
145 static unsigned long moxaBaseAddr[MAX_BOARDS];
146
147 struct moxa_str {
148 int type;
149 int port;
150 int close_delay;
151 unsigned short closing_wait;
152 int count;
153 int blocked_open;
154 long event; /* long req'd for set_bit --RR */
155 int asyncflags;
156 unsigned long statusflags;
157 struct tty_struct *tty;
158 int cflag;
159 wait_queue_head_t open_wait;
160 wait_queue_head_t close_wait;
161 struct work_struct tqueue;
162 };
163
164 struct mxser_mstatus {
165 tcflag_t cflag;
166 int cts;
167 int dsr;
168 int ri;
169 int dcd;
170 };
171
172 static struct mxser_mstatus GMStatus[MAX_PORTS];
173
174 /* statusflags */
175 #define TXSTOPPED 0x1
176 #define LOWWAIT 0x2
177 #define EMPTYWAIT 0x4
178 #define THROTTLE 0x8
179
180 /* event */
181 #define MOXA_EVENT_HANGUP 1
182
183 #define SERIAL_DO_RESTART
184
185
186 #define SERIAL_TYPE_NORMAL 1
187
188 #define WAKEUP_CHARS 256
189
190 #define PORTNO(x) ((x)->index)
191
192 static int verbose = 0;
193 static int ttymajor = MOXAMAJOR;
194 /* Variables for insmod */
195 #ifdef MODULE
196 static int baseaddr[] = {0, 0, 0, 0};
197 static int type[] = {0, 0, 0, 0};
198 static int numports[] = {0, 0, 0, 0};
199 #endif
200
201 MODULE_AUTHOR("William Chen");
202 MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
203 MODULE_LICENSE("GPL");
204 MODULE_PARM(type, "1-4i");
205 MODULE_PARM(baseaddr, "1-4i");
206 MODULE_PARM(numports, "1-4i");
207 MODULE_PARM(ttymajor, "i");
208 MODULE_PARM(verbose, "i");
209
210 static struct tty_driver *moxaDriver;
211 static struct moxa_str moxaChannels[MAX_PORTS];
212 static unsigned char *moxaXmitBuff;
213 static int moxaTimer_on;
214 static struct timer_list moxaTimer;
215 static int moxaEmptyTimer_on[MAX_PORTS];
216 static struct timer_list moxaEmptyTimer[MAX_PORTS];
217 static struct semaphore moxaBuffSem;
218
219 /*
220 * static functions:
221 */
222 static void do_moxa_softint(void *);
223 static int moxa_open(struct tty_struct *, struct file *);
224 static void moxa_close(struct tty_struct *, struct file *);
225 static int moxa_write(struct tty_struct *, int, const unsigned char *, int);
226 static int moxa_write_room(struct tty_struct *);
227 static void moxa_flush_buffer(struct tty_struct *);
228 static int moxa_chars_in_buffer(struct tty_struct *);
229 static void moxa_flush_chars(struct tty_struct *);
230 static void moxa_put_char(struct tty_struct *, unsigned char);
231 static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
232 static void moxa_throttle(struct tty_struct *);
233 static void moxa_unthrottle(struct tty_struct *);
234 static void moxa_set_termios(struct tty_struct *, struct termios *);
235 static void moxa_stop(struct tty_struct *);
236 static void moxa_start(struct tty_struct *);
237 static void moxa_hangup(struct tty_struct *);
238 static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
239 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
240 unsigned int set, unsigned int clear);
241 static void moxa_poll(unsigned long);
242 static void set_tty_param(struct tty_struct *);
243 static int block_till_ready(struct tty_struct *, struct file *,
244 struct moxa_str *);
245 static void setup_empty_event(struct tty_struct *);
246 static void check_xmit_empty(unsigned long);
247 static void shut_down(struct moxa_str *);
248 static void receive_data(struct moxa_str *);
249 /*
250 * moxa board interface functions:
251 */
252 static void MoxaDriverInit(void);
253 static int MoxaDriverIoctl(unsigned int, unsigned long, int);
254 static int MoxaDriverPoll(void);
255 static int MoxaPortsOfCard(int);
256 static int MoxaPortIsValid(int);
257 static void MoxaPortEnable(int);
258 static void MoxaPortDisable(int);
259 static long MoxaPortGetMaxBaud(int);
260 static long MoxaPortSetBaud(int, long);
261 static int MoxaPortSetTermio(int, struct termios *);
262 static int MoxaPortGetLineOut(int, int *, int *);
263 static void MoxaPortLineCtrl(int, int, int);
264 static void MoxaPortFlowCtrl(int, int, int, int, int, int);
265 static int MoxaPortLineStatus(int);
266 static int MoxaPortDCDChange(int);
267 static int MoxaPortDCDON(int);
268 static void MoxaPortFlushData(int, int);
269 static int MoxaPortWriteData(int, unsigned char *, int);
270 static int MoxaPortReadData(int, unsigned char *, int);
271 static int MoxaPortTxQueue(int);
272 static int MoxaPortRxQueue(int);
273 static int MoxaPortTxFree(int);
274 static void MoxaPortTxDisable(int);
275 static void MoxaPortTxEnable(int);
276 static int MoxaPortResetBrkCnt(int);
277 static void MoxaPortSendBreak(int, int);
278 static int moxa_get_serial_info(struct moxa_str *, struct serial_struct __user *);
279 static int moxa_set_serial_info(struct moxa_str *, struct serial_struct __user *);
280 static void MoxaSetFifo(int port, int enable);
281
282 static struct tty_operations moxa_ops = {
283 .open = moxa_open,
284 .close = moxa_close,
285 .write = moxa_write,
286 .write_room = moxa_write_room,
287 .flush_buffer = moxa_flush_buffer,
288 .chars_in_buffer = moxa_chars_in_buffer,
289 .flush_chars = moxa_flush_chars,
290 .put_char = moxa_put_char,
291 .ioctl = moxa_ioctl,
292 .throttle = moxa_throttle,
293 .unthrottle = moxa_unthrottle,
294 .set_termios = moxa_set_termios,
295 .stop = moxa_stop,
296 .start = moxa_start,
297 .hangup = moxa_hangup,
298 .tiocmget = moxa_tiocmget,
299 .tiocmset = moxa_tiocmset,
300 };
301
302 #ifdef CONFIG_PCI
303 static int moxa_get_PCI_conf(struct pci_dev *p, int board_type, moxa_board_conf * board)
304 {
305 board->baseAddr = pci_resource_start (p, 2);
306 board->boardType = board_type;
307 switch (board_type) {
308 case MOXA_BOARD_C218_ISA:
309 case MOXA_BOARD_C218_PCI:
310 board->numPorts = 8;
311 break;
312
313 case MOXA_BOARD_CP204J:
314 board->numPorts = 4;
315 break;
316 default:
317 board->numPorts = 0;
318 break;
319 }
320 board->busType = MOXA_BUS_TYPE_PCI;
321 board->pciInfo.busNum = p->bus->number;
322 board->pciInfo.devNum = p->devfn >> 3;
323
324 return (0);
325 }
326 #endif /* CONFIG_PCI */
327
328 static int __init moxa_init(void)
329 {
330 int i, numBoards;
331 struct moxa_str *ch;
332
333 printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION);
334 moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
335 if (!moxaDriver)
336 return -ENOMEM;
337
338 init_MUTEX(&moxaBuffSem);
339 moxaDriver->owner = THIS_MODULE;
340 moxaDriver->name = "ttya";
341 moxaDriver->devfs_name = "tts/a";
342 moxaDriver->major = ttymajor;
343 moxaDriver->minor_start = 0;
344 moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
345 moxaDriver->subtype = SERIAL_TYPE_NORMAL;
346 moxaDriver->init_termios = tty_std_termios;
347 moxaDriver->init_termios.c_iflag = 0;
348 moxaDriver->init_termios.c_oflag = 0;
349 moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
350 moxaDriver->init_termios.c_lflag = 0;
351 moxaDriver->flags = TTY_DRIVER_REAL_RAW;
352 tty_set_operations(moxaDriver, &moxa_ops);
353
354 moxaXmitBuff = NULL;
355
356 for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) {
357 ch->type = PORT_16550A;
358 ch->port = i;
359 INIT_WORK(&ch->tqueue, do_moxa_softint, ch);
360 ch->tty = NULL;
361 ch->close_delay = 5 * HZ / 10;
362 ch->closing_wait = 30 * HZ;
363 ch->count = 0;
364 ch->blocked_open = 0;
365 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
366 init_waitqueue_head(&ch->open_wait);
367 init_waitqueue_head(&ch->close_wait);
368 }
369
370 for (i = 0; i < MAX_BOARDS; i++) {
371 moxa_boards[i].boardType = 0;
372 moxa_boards[i].numPorts = 0;
373 moxa_boards[i].baseAddr = 0;
374 moxa_boards[i].busType = 0;
375 moxa_boards[i].pciInfo.busNum = 0;
376 moxa_boards[i].pciInfo.devNum = 0;
377 }
378 MoxaDriverInit();
379 printk("Tty devices major number = %d\n", ttymajor);
380
381 if (tty_register_driver(moxaDriver)) {
382 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
383 put_tty_driver(moxaDriver);
384 return -1;
385 }
386 for (i = 0; i < MAX_PORTS; i++) {
387 init_timer(&moxaEmptyTimer[i]);
388 moxaEmptyTimer[i].function = check_xmit_empty;
389 moxaEmptyTimer[i].data = (unsigned long) & moxaChannels[i];
390 moxaEmptyTimer_on[i] = 0;
391 }
392
393 init_timer(&moxaTimer);
394 moxaTimer.function = moxa_poll;
395 moxaTimer.expires = jiffies + (HZ / 50);
396 moxaTimer_on = 1;
397 add_timer(&moxaTimer);
398
399 /* Find the boards defined in source code */
400 numBoards = 0;
401 for (i = 0; i < MAX_BOARDS; i++) {
402 if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) ||
403 (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) {
404 moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType;
405 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
406 moxa_boards[numBoards].numPorts = 8;
407 else
408 moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts;
409 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
410 moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr;
411 if (verbose)
412 printk("Board %2d: %s board(baseAddr=%lx)\n",
413 numBoards + 1,
414 moxa_brdname[moxa_boards[numBoards].boardType - 1],
415 moxa_boards[numBoards].baseAddr);
416 numBoards++;
417 }
418 }
419 /* Find the boards defined form module args. */
420 #ifdef MODULE
421 for (i = 0; i < MAX_BOARDS; i++) {
422 if ((type[i] == MOXA_BOARD_C218_ISA) ||
423 (type[i] == MOXA_BOARD_C320_ISA)) {
424 if (verbose)
425 printk("Board %2d: %s board(baseAddr=%lx)\n",
426 numBoards + 1,
427 moxa_brdname[type[i] - 1],
428 (unsigned long) baseaddr[i]);
429 if (numBoards >= MAX_BOARDS) {
430 if (verbose)
431 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
432 continue;
433 }
434 moxa_boards[numBoards].boardType = type[i];
435 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
436 moxa_boards[numBoards].numPorts = 8;
437 else
438 moxa_boards[numBoards].numPorts = numports[i];
439 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
440 moxa_boards[numBoards].baseAddr = baseaddr[i];
441 numBoards++;
442 }
443 }
444 #endif
445 /* Find PCI boards here */
446 #ifdef CONFIG_PCI
447 {
448 struct pci_dev *p = NULL;
449 int n = (sizeof(moxa_pcibrds) / sizeof(moxa_pcibrds[0])) - 1;
450 i = 0;
451 while (i < n) {
452 while ((p = pci_find_device(moxa_pcibrds[i].vendor, moxa_pcibrds[i].device, p))!=NULL)
453 {
454 if (pci_enable_device(p))
455 continue;
456 if (numBoards >= MAX_BOARDS) {
457 if (verbose)
458 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
459 } else {
460 moxa_get_PCI_conf(p, moxa_pcibrds[i].driver_data,
461 &moxa_boards[numBoards]);
462 numBoards++;
463 }
464 }
465 i++;
466 }
467 }
468 #endif
469 for (i = 0; i < numBoards; i++) {
470 moxaBaseAddr[i] = (unsigned long) ioremap((unsigned long) moxa_boards[i].baseAddr, 0x4000);
471 {
472 int __j;
473 for ( __j=0; __j<0x100; __j++)
474 printk("%02x ", *(volatile unsigned char *)(moxaBaseAddr[i]+__j));
475 printk("\n");
476 }
477 }
478
479 return (0);
480 }
481
482 static void __exit moxa_exit(void)
483 {
484 int i;
485
486 if (verbose)
487 printk("Unloading module moxa ...\n");
488
489 if (moxaTimer_on)
490 del_timer(&moxaTimer);
491
492 for (i = 0; i < MAX_PORTS; i++)
493 if (moxaEmptyTimer_on[i])
494 del_timer(&moxaEmptyTimer[i]);
495
496 if (tty_unregister_driver(moxaDriver))
497 printk("Couldn't unregister MOXA Intellio family serial driver\n");
498 put_tty_driver(moxaDriver);
499 if (verbose)
500 printk("Done\n");
501
502 }
503
504 module_init(moxa_init);
505 module_exit(moxa_exit);
506
507 static void do_moxa_softint(void *private_)
508 {
509 struct moxa_str *ch = (struct moxa_str *) private_;
510 struct tty_struct *tty;
511
512 if (ch && (tty = ch->tty)) {
513 if (test_and_clear_bit(MOXA_EVENT_HANGUP, &ch->event)) {
514 tty_hangup(tty); /* FIXME: module removal race here - AKPM */
515 wake_up_interruptible(&ch->open_wait);
516 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
517 }
518 }
519 }
520
521 static int moxa_open(struct tty_struct *tty, struct file *filp)
522 {
523 struct moxa_str *ch;
524 int port;
525 int retval;
526 unsigned long page;
527
528 port = PORTNO(tty);
529 if (port == MAX_PORTS) {
530 return (0);
531 }
532 if (!MoxaPortIsValid(port)) {
533 tty->driver_data = NULL;
534 return (-ENODEV);
535 }
536 down(&moxaBuffSem);
537 if (!moxaXmitBuff) {
538 page = get_zeroed_page(GFP_KERNEL);
539 if (!page) {
540 up(&moxaBuffSem);
541 return (-ENOMEM);
542 }
543 /* This test is guarded by the BuffSem so no longer needed
544 delete me in 2.5 */
545 if (moxaXmitBuff)
546 free_page(page);
547 else
548 moxaXmitBuff = (unsigned char *) page;
549 }
550 up(&moxaBuffSem);
551
552 ch = &moxaChannels[port];
553 ch->count++;
554 tty->driver_data = ch;
555 ch->tty = tty;
556 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
557 ch->statusflags = 0;
558 set_tty_param(tty);
559 MoxaPortLineCtrl(ch->port, 1, 1);
560 MoxaPortEnable(ch->port);
561 ch->asyncflags |= ASYNC_INITIALIZED;
562 }
563 retval = block_till_ready(tty, filp, ch);
564
565 moxa_unthrottle(tty);
566
567 if (ch->type == PORT_16550A) {
568 MoxaSetFifo(ch->port, 1);
569 } else {
570 MoxaSetFifo(ch->port, 0);
571 }
572
573 return (retval);
574 }
575
576 static void moxa_close(struct tty_struct *tty, struct file *filp)
577 {
578 struct moxa_str *ch;
579 int port;
580
581 port = PORTNO(tty);
582 if (port == MAX_PORTS) {
583 return;
584 }
585 if (!MoxaPortIsValid(port)) {
586 #ifdef SERIAL_DEBUG_CLOSE
587 printk("Invalid portno in moxa_close\n");
588 #endif
589 tty->driver_data = NULL;
590 return;
591 }
592 if (tty->driver_data == NULL) {
593 return;
594 }
595 if (tty_hung_up_p(filp)) {
596 return;
597 }
598 ch = (struct moxa_str *) tty->driver_data;
599
600 if ((tty->count == 1) && (ch->count != 1)) {
601 printk("moxa_close: bad serial port count; tty->count is 1, "
602 "ch->count is %d\n", ch->count);
603 ch->count = 1;
604 }
605 if (--ch->count < 0) {
606 printk("moxa_close: bad serial port count, device=%s\n",
607 tty->name);
608 ch->count = 0;
609 }
610 if (ch->count) {
611 return;
612 }
613 ch->asyncflags |= ASYNC_CLOSING;
614
615 ch->cflag = tty->termios->c_cflag;
616 if (ch->asyncflags & ASYNC_INITIALIZED) {
617 setup_empty_event(tty);
618 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
619 moxaEmptyTimer_on[ch->port] = 0;
620 del_timer(&moxaEmptyTimer[ch->port]);
621 }
622 shut_down(ch);
623 MoxaPortFlushData(port, 2);
624
625 if (tty->driver->flush_buffer)
626 tty->driver->flush_buffer(tty);
627 tty_ldisc_flush(tty);
628
629 tty->closing = 0;
630 ch->event = 0;
631 ch->tty = NULL;
632 if (ch->blocked_open) {
633 if (ch->close_delay) {
634 set_current_state(TASK_INTERRUPTIBLE);
635 schedule_timeout(ch->close_delay);
636 }
637 wake_up_interruptible(&ch->open_wait);
638 }
639 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
640 wake_up_interruptible(&ch->close_wait);
641 }
642
643 static int moxa_write(struct tty_struct *tty, int from_user,
644 const unsigned char *buf, int count)
645 {
646 struct moxa_str *ch;
647 int len, port;
648 unsigned long flags;
649
650 ch = (struct moxa_str *) tty->driver_data;
651 if (ch == NULL)
652 return (0);
653 port = ch->port;
654 save_flags(flags);
655 if (from_user) {
656 if (count > PAGE_SIZE)
657 count = PAGE_SIZE;
658 down(&moxaBuffSem);
659 if (copy_from_user(moxaXmitBuff, buf, count)) {
660 len = -EFAULT;
661 } else {
662 cli();
663 len = MoxaPortWriteData(port, moxaXmitBuff, count);
664 restore_flags(flags);
665 }
666 up(&moxaBuffSem);
667 if (len < 0)
668 return len;
669 } else {
670 cli();
671 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
672 restore_flags(flags);
673 }
674
675 /*********************************************
676 if ( !(ch->statusflags & LOWWAIT) &&
677 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
678 ************************************************/
679 ch->statusflags |= LOWWAIT;
680 return (len);
681 }
682
683 static int moxa_write_room(struct tty_struct *tty)
684 {
685 struct moxa_str *ch;
686
687 if (tty->stopped)
688 return (0);
689 ch = (struct moxa_str *) tty->driver_data;
690 if (ch == NULL)
691 return (0);
692 return (MoxaPortTxFree(ch->port));
693 }
694
695 static void moxa_flush_buffer(struct tty_struct *tty)
696 {
697 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
698
699 if (ch == NULL)
700 return;
701 MoxaPortFlushData(ch->port, 1);
702 tty_wakeup(tty);
703 wake_up_interruptible(&tty->write_wait);
704 }
705
706 static int moxa_chars_in_buffer(struct tty_struct *tty)
707 {
708 int chars;
709 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
710
711 /*
712 * Sigh...I have to check if driver_data is NULL here, because
713 * if an open() fails, the TTY subsystem eventually calls
714 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
715 * routine. And since the open() failed, we return 0 here. TDJ
716 */
717 if (ch == NULL)
718 return (0);
719 chars = MoxaPortTxQueue(ch->port);
720 if (chars) {
721 /*
722 * Make it possible to wakeup anything waiting for output
723 * in tty_ioctl.c, etc.
724 */
725 if (!(ch->statusflags & EMPTYWAIT))
726 setup_empty_event(tty);
727 }
728 return (chars);
729 }
730
731 static void moxa_flush_chars(struct tty_struct *tty)
732 {
733 /*
734 * Don't think I need this, because this is called to empty the TX
735 * buffer for the 16450, 16550, etc.
736 */
737 }
738
739 static void moxa_put_char(struct tty_struct *tty, unsigned char c)
740 {
741 struct moxa_str *ch;
742 int port;
743 unsigned long flags;
744
745 ch = (struct moxa_str *) tty->driver_data;
746 if (ch == NULL)
747 return;
748 port = ch->port;
749 save_flags(flags);
750 cli();
751 moxaXmitBuff[0] = c;
752 MoxaPortWriteData(port, moxaXmitBuff, 1);
753 restore_flags(flags);
754 /************************************************
755 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
756 *************************************************/
757 ch->statusflags |= LOWWAIT;
758 }
759
760 static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
761 {
762 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
763 int port;
764 int flag = 0, dtr, rts;
765
766 port = PORTNO(tty);
767 if ((port != MAX_PORTS) && (!ch))
768 return (-EINVAL);
769
770 MoxaPortGetLineOut(ch->port, &dtr, &rts);
771 if (dtr)
772 flag |= TIOCM_DTR;
773 if (rts)
774 flag |= TIOCM_RTS;
775 dtr = MoxaPortLineStatus(ch->port);
776 if (dtr & 1)
777 flag |= TIOCM_CTS;
778 if (dtr & 2)
779 flag |= TIOCM_DSR;
780 if (dtr & 4)
781 flag |= TIOCM_CD;
782 return flag;
783 }
784
785 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
786 unsigned int set, unsigned int clear)
787 {
788 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
789 int port;
790 int dtr, rts;
791
792 port = PORTNO(tty);
793 if ((port != MAX_PORTS) && (!ch))
794 return (-EINVAL);
795
796 MoxaPortGetLineOut(ch->port, &dtr, &rts);
797 if (set & TIOCM_RTS)
798 rts = 1;
799 if (set & TIOCM_DTR)
800 dtr = 1;
801 if (clear & TIOCM_RTS)
802 rts = 0;
803 if (clear & TIOCM_DTR)
804 dtr = 0;
805 MoxaPortLineCtrl(ch->port, dtr, rts);
806 return 0;
807 }
808
809 static int moxa_ioctl(struct tty_struct *tty, struct file *file,
810 unsigned int cmd, unsigned long arg)
811 {
812 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
813 register int port;
814 void __user *argp = (void __user *)arg;
815 int retval;
816
817 port = PORTNO(tty);
818 if ((port != MAX_PORTS) && (!ch))
819 return (-EINVAL);
820
821 switch (cmd) {
822 case TCSBRK: /* SVID version: non-zero arg --> no break */
823 retval = tty_check_change(tty);
824 if (retval)
825 return (retval);
826 setup_empty_event(tty);
827 tty_wait_until_sent(tty, 0);
828 if (!arg)
829 MoxaPortSendBreak(ch->port, 0);
830 return (0);
831 case TCSBRKP: /* support for POSIX tcsendbreak() */
832 retval = tty_check_change(tty);
833 if (retval)
834 return (retval);
835 setup_empty_event(tty);
836 tty_wait_until_sent(tty, 0);
837 MoxaPortSendBreak(ch->port, arg);
838 return (0);
839 case TIOCGSOFTCAR:
840 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
841 case TIOCSSOFTCAR:
842 if(get_user(retval, (unsigned long __user *) argp))
843 return -EFAULT;
844 arg = retval;
845 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
846 (arg ? CLOCAL : 0));
847 if (C_CLOCAL(tty))
848 ch->asyncflags &= ~ASYNC_CHECK_CD;
849 else
850 ch->asyncflags |= ASYNC_CHECK_CD;
851 return (0);
852 case TIOCGSERIAL:
853 return moxa_get_serial_info(ch, argp);
854
855 case TIOCSSERIAL:
856 return moxa_set_serial_info(ch, argp);
857 default:
858 retval = MoxaDriverIoctl(cmd, arg, port);
859 }
860 return (retval);
861 }
862
863 static void moxa_throttle(struct tty_struct *tty)
864 {
865 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
866
867 ch->statusflags |= THROTTLE;
868 }
869
870 static void moxa_unthrottle(struct tty_struct *tty)
871 {
872 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
873
874 ch->statusflags &= ~THROTTLE;
875 }
876
877 static void moxa_set_termios(struct tty_struct *tty,
878 struct termios *old_termios)
879 {
880 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
881
882 if (ch == NULL)
883 return;
884 set_tty_param(tty);
885 if (!(old_termios->c_cflag & CLOCAL) &&
886 (tty->termios->c_cflag & CLOCAL))
887 wake_up_interruptible(&ch->open_wait);
888 }
889
890 static void moxa_stop(struct tty_struct *tty)
891 {
892 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
893
894 if (ch == NULL)
895 return;
896 MoxaPortTxDisable(ch->port);
897 ch->statusflags |= TXSTOPPED;
898 }
899
900
901 static void moxa_start(struct tty_struct *tty)
902 {
903 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
904
905 if (ch == NULL)
906 return;
907
908 if (!(ch->statusflags & TXSTOPPED))
909 return;
910
911 MoxaPortTxEnable(ch->port);
912 ch->statusflags &= ~TXSTOPPED;
913 }
914
915 static void moxa_hangup(struct tty_struct *tty)
916 {
917 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
918
919 moxa_flush_buffer(tty);
920 shut_down(ch);
921 ch->event = 0;
922 ch->count = 0;
923 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
924 ch->tty = NULL;
925 wake_up_interruptible(&ch->open_wait);
926 }
927
928 static void moxa_poll(unsigned long ignored)
929 {
930 register int card;
931 struct moxa_str *ch;
932 struct tty_struct *tp;
933 int i, ports;
934
935 moxaTimer_on = 0;
936 del_timer(&moxaTimer);
937
938 if (MoxaDriverPoll() < 0) {
939 moxaTimer.function = moxa_poll;
940 moxaTimer.expires = jiffies + (HZ / 50);
941 moxaTimer_on = 1;
942 add_timer(&moxaTimer);
943 return;
944 }
945 for (card = 0; card < MAX_BOARDS; card++) {
946 if ((ports = MoxaPortsOfCard(card)) <= 0)
947 continue;
948 ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
949 for (i = 0; i < ports; i++, ch++) {
950 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
951 continue;
952 if (!(ch->statusflags & THROTTLE) &&
953 (MoxaPortRxQueue(ch->port) > 0))
954 receive_data(ch);
955 if ((tp = ch->tty) == 0)
956 continue;
957 if (ch->statusflags & LOWWAIT) {
958 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
959 if (!tp->stopped) {
960 ch->statusflags &= ~LOWWAIT;
961 tty_wakeup(tp);
962 wake_up_interruptible(&tp->write_wait);
963 }
964 }
965 }
966 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
967 tty_insert_flip_char(tp, 0, TTY_BREAK);
968 tty_schedule_flip(tp);
969 }
970 if (MoxaPortDCDChange(ch->port)) {
971 if (ch->asyncflags & ASYNC_CHECK_CD) {
972 if (MoxaPortDCDON(ch->port))
973 wake_up_interruptible(&ch->open_wait);
974 else {
975 set_bit(MOXA_EVENT_HANGUP, &ch->event);
976 schedule_work(&ch->tqueue);
977 }
978 }
979 }
980 }
981 }
982
983 moxaTimer.function = moxa_poll;
984 moxaTimer.expires = jiffies + (HZ / 50);
985 moxaTimer_on = 1;
986 add_timer(&moxaTimer);
987 }
988
989 /******************************************************************************/
990
991 static void set_tty_param(struct tty_struct *tty)
992 {
993 register struct termios *ts;
994 struct moxa_str *ch;
995 int rts, cts, txflow, rxflow, xany;
996
997 ch = (struct moxa_str *) tty->driver_data;
998 ts = tty->termios;
999 if (ts->c_cflag & CLOCAL)
1000 ch->asyncflags &= ~ASYNC_CHECK_CD;
1001 else
1002 ch->asyncflags |= ASYNC_CHECK_CD;
1003 rts = cts = txflow = rxflow = xany = 0;
1004 if (ts->c_cflag & CRTSCTS)
1005 rts = cts = 1;
1006 if (ts->c_iflag & IXON)
1007 txflow = 1;
1008 if (ts->c_iflag & IXOFF)
1009 rxflow = 1;
1010 if (ts->c_iflag & IXANY)
1011 xany = 1;
1012 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
1013 MoxaPortSetTermio(ch->port, ts);
1014 }
1015
1016 static int block_till_ready(struct tty_struct *tty, struct file *filp,
1017 struct moxa_str *ch)
1018 {
1019 DECLARE_WAITQUEUE(wait,current);
1020 unsigned long flags;
1021 int retval;
1022 int do_clocal = C_CLOCAL(tty);
1023
1024 /*
1025 * If the device is in the middle of being closed, then block
1026 * until it's done, and then try again.
1027 */
1028 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
1029 if (ch->asyncflags & ASYNC_CLOSING)
1030 interruptible_sleep_on(&ch->close_wait);
1031 #ifdef SERIAL_DO_RESTART
1032 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1033 return (-EAGAIN);
1034 else
1035 return (-ERESTARTSYS);
1036 #else
1037 return (-EAGAIN);
1038 #endif
1039 }
1040 /*
1041 * If non-blocking mode is set, then make the check up front
1042 * and then exit.
1043 */
1044 if (filp->f_flags & O_NONBLOCK) {
1045 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1046 return (0);
1047 }
1048 /*
1049 * Block waiting for the carrier detect and the line to become free
1050 */
1051 retval = 0;
1052 add_wait_queue(&ch->open_wait, &wait);
1053 #ifdef SERIAL_DEBUG_OPEN
1054 printk("block_til_ready before block: ttys%d, count = %d\n",
1055 ch->line, ch->count);
1056 #endif
1057 save_flags(flags);
1058 cli();
1059 if (!tty_hung_up_p(filp))
1060 ch->count--;
1061 restore_flags(flags);
1062 ch->blocked_open++;
1063 while (1) {
1064 set_current_state(TASK_INTERRUPTIBLE);
1065 if (tty_hung_up_p(filp) ||
1066 !(ch->asyncflags & ASYNC_INITIALIZED)) {
1067 #ifdef SERIAL_DO_RESTART
1068 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1069 retval = -EAGAIN;
1070 else
1071 retval = -ERESTARTSYS;
1072 #else
1073 retval = -EAGAIN;
1074 #endif
1075 break;
1076 }
1077 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
1078 MoxaPortDCDON(ch->port)))
1079 break;
1080
1081 if (signal_pending(current)) {
1082 retval = -ERESTARTSYS;
1083 break;
1084 }
1085 schedule();
1086 }
1087 set_current_state(TASK_RUNNING);
1088 remove_wait_queue(&ch->open_wait, &wait);
1089 if (!tty_hung_up_p(filp))
1090 ch->count++;
1091 ch->blocked_open--;
1092 #ifdef SERIAL_DEBUG_OPEN
1093 printk("block_til_ready after blocking: ttys%d, count = %d\n",
1094 ch->line, ch->count);
1095 #endif
1096 if (retval)
1097 return (retval);
1098 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1099 return (0);
1100 }
1101
1102 static void setup_empty_event(struct tty_struct *tty)
1103 {
1104 struct moxa_str *ch = tty->driver_data;
1105 unsigned long flags;
1106
1107 save_flags(flags);
1108 cli();
1109 ch->statusflags |= EMPTYWAIT;
1110 moxaEmptyTimer_on[ch->port] = 0;
1111 del_timer(&moxaEmptyTimer[ch->port]);
1112 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1113 moxaEmptyTimer_on[ch->port] = 1;
1114 add_timer(&moxaEmptyTimer[ch->port]);
1115 restore_flags(flags);
1116 }
1117
1118 static void check_xmit_empty(unsigned long data)
1119 {
1120 struct moxa_str *ch;
1121
1122 ch = (struct moxa_str *) data;
1123 moxaEmptyTimer_on[ch->port] = 0;
1124 del_timer(&moxaEmptyTimer[ch->port]);
1125 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1126 if (MoxaPortTxQueue(ch->port) == 0) {
1127 ch->statusflags &= ~EMPTYWAIT;
1128 tty_wakeup(ch->tty);
1129 wake_up_interruptible(&ch->tty->write_wait);
1130 return;
1131 }
1132 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1133 moxaEmptyTimer_on[ch->port] = 1;
1134 add_timer(&moxaEmptyTimer[ch->port]);
1135 } else
1136 ch->statusflags &= ~EMPTYWAIT;
1137 }
1138
1139 static void shut_down(struct moxa_str *ch)
1140 {
1141 struct tty_struct *tp;
1142
1143 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1144 return;
1145
1146 tp = ch->tty;
1147
1148 MoxaPortDisable(ch->port);
1149
1150 /*
1151 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1152 */
1153 if (tp->termios->c_cflag & HUPCL)
1154 MoxaPortLineCtrl(ch->port, 0, 0);
1155
1156 ch->asyncflags &= ~ASYNC_INITIALIZED;
1157 }
1158
1159 static void receive_data(struct moxa_str *ch)
1160 {
1161 struct tty_struct *tp;
1162 struct termios *ts;
1163 int i, count, rc, space;
1164 unsigned char *charptr, *flagptr;
1165 unsigned long flags;
1166
1167 ts = NULL;
1168 tp = ch->tty;
1169 if (tp)
1170 ts = tp->termios;
1171 /**************************************************
1172 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1173 *****************************************************/
1174 if (!tp || !ts) {
1175 MoxaPortFlushData(ch->port, 0);
1176 return;
1177 }
1178 space = TTY_FLIPBUF_SIZE - tp->flip.count;
1179 if (space <= 0)
1180 return;
1181 charptr = tp->flip.char_buf_ptr;
1182 flagptr = tp->flip.flag_buf_ptr;
1183 rc = tp->flip.count;
1184 save_flags(flags);
1185 cli();
1186 count = MoxaPortReadData(ch->port, charptr, space);
1187 restore_flags(flags);
1188 for (i = 0; i < count; i++)
1189 *flagptr++ = 0;
1190 charptr += count;
1191 rc += count;
1192 tp->flip.count = rc;
1193 tp->flip.char_buf_ptr = charptr;
1194 tp->flip.flag_buf_ptr = flagptr;
1195 tty_schedule_flip(ch->tty);
1196 }
1197
1198 #define Magic_code 0x404
1199
1200 /*
1201 * System Configuration
1202 */
1203 /*
1204 * for C218 BIOS initialization
1205 */
1206 #define C218_ConfBase 0x800
1207 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1208 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1209 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1210 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1211 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1212 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1213 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1214 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1215 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1216 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1217
1218 #define C218_LoadBuf 0x0F00
1219 #define C218_KeyCode 0x218
1220 #define CP204J_KeyCode 0x204
1221
1222 /*
1223 * for C320 BIOS initialization
1224 */
1225 #define C320_ConfBase 0x800
1226 #define C320_LoadBuf 0x0f00
1227 #define STS_init 0x05 /* for C320_status */
1228
1229 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1230 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1231 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1232 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1233 #define C320check_sum C320_ConfBase + 8 /* WORD */
1234 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1235 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1236 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1237
1238 #define C320_KeyCode 0x320
1239
1240 #define FixPage_addr 0x0000 /* starting addr of static page */
1241 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1242 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1243 #define Control_reg 0x1ff0 /* select page and reset control */
1244 #define HW_reset 0x80
1245
1246 /*
1247 * Function Codes
1248 */
1249 #define FC_CardReset 0x80
1250 #define FC_ChannelReset 1 /* C320 firmware not supported */
1251 #define FC_EnableCH 2
1252 #define FC_DisableCH 3
1253 #define FC_SetParam 4
1254 #define FC_SetMode 5
1255 #define FC_SetRate 6
1256 #define FC_LineControl 7
1257 #define FC_LineStatus 8
1258 #define FC_XmitControl 9
1259 #define FC_FlushQueue 10
1260 #define FC_SendBreak 11
1261 #define FC_StopBreak 12
1262 #define FC_LoopbackON 13
1263 #define FC_LoopbackOFF 14
1264 #define FC_ClrIrqTable 15
1265 #define FC_SendXon 16
1266 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1267 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1268 #define FC_SetBreakIrq 19
1269 #define FC_SetLineIrq 20
1270 #define FC_SetFlowCtl 21
1271 #define FC_GenIrq 22
1272 #define FC_InCD180 23
1273 #define FC_OutCD180 24
1274 #define FC_InUARTreg 23
1275 #define FC_OutUARTreg 24
1276 #define FC_SetXonXoff 25
1277 #define FC_OutCD180CCR 26
1278 #define FC_ExtIQueue 27
1279 #define FC_ExtOQueue 28
1280 #define FC_ClrLineIrq 29
1281 #define FC_HWFlowCtl 30
1282 #define FC_GetClockRate 35
1283 #define FC_SetBaud 36
1284 #define FC_SetDataMode 41
1285 #define FC_GetCCSR 43
1286 #define FC_GetDataError 45
1287 #define FC_RxControl 50
1288 #define FC_ImmSend 51
1289 #define FC_SetXonState 52
1290 #define FC_SetXoffState 53
1291 #define FC_SetRxFIFOTrig 54
1292 #define FC_SetTxFIFOCnt 55
1293 #define FC_UnixRate 56
1294 #define FC_UnixResetTimer 57
1295
1296 #define RxFIFOTrig1 0
1297 #define RxFIFOTrig4 1
1298 #define RxFIFOTrig8 2
1299 #define RxFIFOTrig14 3
1300
1301 /*
1302 * Dual-Ported RAM
1303 */
1304 #define DRAM_global 0
1305 #define INT_data (DRAM_global + 0)
1306 #define Config_base (DRAM_global + 0x108)
1307
1308 #define IRQindex (INT_data + 0)
1309 #define IRQpending (INT_data + 4)
1310 #define IRQtable (INT_data + 8)
1311
1312 /*
1313 * Interrupt Status
1314 */
1315 #define IntrRx 0x01 /* receiver data O.K. */
1316 #define IntrTx 0x02 /* transmit buffer empty */
1317 #define IntrFunc 0x04 /* function complete */
1318 #define IntrBreak 0x08 /* received break */
1319 #define IntrLine 0x10 /* line status change
1320 for transmitter */
1321 #define IntrIntr 0x20 /* received INTR code */
1322 #define IntrQuit 0x40 /* received QUIT code */
1323 #define IntrEOF 0x80 /* received EOF code */
1324
1325 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1326 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1327
1328 #define Magic_no (Config_base + 0)
1329 #define Card_model_no (Config_base + 2)
1330 #define Total_ports (Config_base + 4)
1331 #define Module_cnt (Config_base + 8)
1332 #define Module_no (Config_base + 10)
1333 #define Timer_10ms (Config_base + 14)
1334 #define Disable_IRQ (Config_base + 20)
1335 #define TMS320_PORT1 (Config_base + 22)
1336 #define TMS320_PORT2 (Config_base + 24)
1337 #define TMS320_CLOCK (Config_base + 26)
1338
1339 /*
1340 * DATA BUFFER in DRAM
1341 */
1342 #define Extern_table 0x400 /* Base address of the external table
1343 (24 words * 64) total 3K bytes
1344 (24 words * 128) total 6K bytes */
1345 #define Extern_size 0x60 /* 96 bytes */
1346 #define RXrptr 0x00 /* read pointer for RX buffer */
1347 #define RXwptr 0x02 /* write pointer for RX buffer */
1348 #define TXrptr 0x04 /* read pointer for TX buffer */
1349 #define TXwptr 0x06 /* write pointer for TX buffer */
1350 #define HostStat 0x08 /* IRQ flag and general flag */
1351 #define FlagStat 0x0A
1352 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1353 /* x x x x | | | | */
1354 /* | | | + CTS flow */
1355 /* | | +--- RTS flow */
1356 /* | +------ TX Xon/Xoff */
1357 /* +--------- RX Xon/Xoff */
1358 #define Break_cnt 0x0E /* received break count */
1359 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1360 #define RX_mask 0x12
1361 #define TX_mask 0x14
1362 #define Ofs_rxb 0x16
1363 #define Ofs_txb 0x18
1364 #define Page_rxb 0x1A
1365 #define Page_txb 0x1C
1366 #define EndPage_rxb 0x1E
1367 #define EndPage_txb 0x20
1368 #define Data_error 0x22
1369 #define RxTrigger 0x28
1370 #define TxTrigger 0x2a
1371
1372 #define rRXwptr 0x34
1373 #define Low_water 0x36
1374
1375 #define FuncCode 0x40
1376 #define FuncArg 0x42
1377 #define FuncArg1 0x44
1378
1379 #define C218rx_size 0x2000 /* 8K bytes */
1380 #define C218tx_size 0x8000 /* 32K bytes */
1381
1382 #define C218rx_mask (C218rx_size - 1)
1383 #define C218tx_mask (C218tx_size - 1)
1384
1385 #define C320p8rx_size 0x2000
1386 #define C320p8tx_size 0x8000
1387 #define C320p8rx_mask (C320p8rx_size - 1)
1388 #define C320p8tx_mask (C320p8tx_size - 1)
1389
1390 #define C320p16rx_size 0x2000
1391 #define C320p16tx_size 0x4000
1392 #define C320p16rx_mask (C320p16rx_size - 1)
1393 #define C320p16tx_mask (C320p16tx_size - 1)
1394
1395 #define C320p24rx_size 0x2000
1396 #define C320p24tx_size 0x2000
1397 #define C320p24rx_mask (C320p24rx_size - 1)
1398 #define C320p24tx_mask (C320p24tx_size - 1)
1399
1400 #define C320p32rx_size 0x1000
1401 #define C320p32tx_size 0x1000
1402 #define C320p32rx_mask (C320p32rx_size - 1)
1403 #define C320p32tx_mask (C320p32tx_size - 1)
1404
1405 #define Page_size 0x2000
1406 #define Page_mask (Page_size - 1)
1407 #define C218rx_spage 3
1408 #define C218tx_spage 4
1409 #define C218rx_pageno 1
1410 #define C218tx_pageno 4
1411 #define C218buf_pageno 5
1412
1413 #define C320p8rx_spage 3
1414 #define C320p8tx_spage 4
1415 #define C320p8rx_pgno 1
1416 #define C320p8tx_pgno 4
1417 #define C320p8buf_pgno 5
1418
1419 #define C320p16rx_spage 3
1420 #define C320p16tx_spage 4
1421 #define C320p16rx_pgno 1
1422 #define C320p16tx_pgno 2
1423 #define C320p16buf_pgno 3
1424
1425 #define C320p24rx_spage 3
1426 #define C320p24tx_spage 4
1427 #define C320p24rx_pgno 1
1428 #define C320p24tx_pgno 1
1429 #define C320p24buf_pgno 2
1430
1431 #define C320p32rx_spage 3
1432 #define C320p32tx_ofs C320p32rx_size
1433 #define C320p32tx_spage 3
1434 #define C320p32buf_pgno 1
1435
1436 /*
1437 * Host Status
1438 */
1439 #define WakeupRx 0x01
1440 #define WakeupTx 0x02
1441 #define WakeupBreak 0x08
1442 #define WakeupLine 0x10
1443 #define WakeupIntr 0x20
1444 #define WakeupQuit 0x40
1445 #define WakeupEOF 0x80 /* used in VTIME control */
1446 #define WakeupRxTrigger 0x100
1447 #define WakeupTxTrigger 0x200
1448 /*
1449 * Flag status
1450 */
1451 #define Rx_over 0x01
1452 #define Xoff_state 0x02
1453 #define Tx_flowOff 0x04
1454 #define Tx_enable 0x08
1455 #define CTS_state 0x10
1456 #define DSR_state 0x20
1457 #define DCD_state 0x80
1458 /*
1459 * FlowControl
1460 */
1461 #define CTS_FlowCtl 1
1462 #define RTS_FlowCtl 2
1463 #define Tx_FlowCtl 4
1464 #define Rx_FlowCtl 8
1465 #define IXM_IXANY 0x10
1466
1467 #define LowWater 128
1468
1469 #define DTR_ON 1
1470 #define RTS_ON 2
1471 #define CTS_ON 1
1472 #define DSR_ON 2
1473 #define DCD_ON 8
1474
1475 /* mode definition */
1476 #define MX_CS8 0x03
1477 #define MX_CS7 0x02
1478 #define MX_CS6 0x01
1479 #define MX_CS5 0x00
1480
1481 #define MX_STOP1 0x00
1482 #define MX_STOP15 0x04
1483 #define MX_STOP2 0x08
1484
1485 #define MX_PARNONE 0x00
1486 #define MX_PAREVEN 0x40
1487 #define MX_PARODD 0xC0
1488
1489 /*
1490 * Query
1491 */
1492 #define QueryPort MAX_PORTS
1493
1494
1495
1496 struct mon_str {
1497 int tick;
1498 int rxcnt[MAX_PORTS];
1499 int txcnt[MAX_PORTS];
1500 };
1501 typedef struct mon_str mon_st;
1502
1503 #define DCD_changed 0x01
1504 #define DCD_oldstate 0x80
1505
1506 static unsigned char moxaBuff[10240];
1507 static unsigned long moxaIntNdx[MAX_BOARDS];
1508 static unsigned long moxaIntPend[MAX_BOARDS];
1509 static unsigned long moxaIntTable[MAX_BOARDS];
1510 static char moxaChkPort[MAX_PORTS];
1511 static char moxaLineCtrl[MAX_PORTS];
1512 static unsigned long moxaTableAddr[MAX_PORTS];
1513 static long moxaCurBaud[MAX_PORTS];
1514 static char moxaDCDState[MAX_PORTS];
1515 static char moxaLowChkFlag[MAX_PORTS];
1516 static int moxaLowWaterChk;
1517 static int moxaCard;
1518 static mon_st moxaLog;
1519 static int moxaFuncTout;
1520 static ushort moxaBreakCnt[MAX_PORTS];
1521
1522 static void moxadelay(int);
1523 static void moxafunc(unsigned long, int, ushort);
1524 static void wait_finish(unsigned long);
1525 static void low_water_check(unsigned long);
1526 static int moxaloadbios(int, unsigned char __user *, int);
1527 static int moxafindcard(int);
1528 static int moxaload320b(int, unsigned char __user *, int);
1529 static int moxaloadcode(int, unsigned char __user *, int);
1530 static int moxaloadc218(int, unsigned long, int);
1531 static int moxaloadc320(int, unsigned long, int, int *);
1532
1533 /*****************************************************************************
1534 * Driver level functions: *
1535 * 1. MoxaDriverInit(void); *
1536 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1537 * 3. MoxaDriverPoll(void); *
1538 *****************************************************************************/
1539 void MoxaDriverInit(void)
1540 {
1541 int i;
1542
1543 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1544 moxaCard = 0;
1545 moxaLog.tick = 0;
1546 moxaLowWaterChk = 0;
1547 for (i = 0; i < MAX_PORTS; i++) {
1548 moxaChkPort[i] = 0;
1549 moxaLowChkFlag[i] = 0;
1550 moxaLineCtrl[i] = 0;
1551 moxaLog.rxcnt[i] = 0;
1552 moxaLog.txcnt[i] = 0;
1553 }
1554 }
1555
1556 #define MOXA 0x400
1557 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1558 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1559 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1560 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1561 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1562 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1563 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1564 #define MOXA_GETDATACOUNT (MOXA + 23)
1565 #define MOXA_GET_IOQUEUE (MOXA + 27)
1566 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1567 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1568 #define MOXA_GET_MAJOR (MOXA + 63)
1569 #define MOXA_GET_CUMAJOR (MOXA + 64)
1570 #define MOXA_GETMSTATUS (MOXA + 65)
1571
1572
1573 struct moxaq_str {
1574 int inq;
1575 int outq;
1576 };
1577
1578 struct dl_str {
1579 char __user *buf;
1580 int len;
1581 int cardno;
1582 };
1583
1584 static struct moxaq_str temp_queue[MAX_PORTS];
1585 static struct dl_str dltmp;
1586
1587 void MoxaPortFlushData(int port, int mode)
1588 {
1589 unsigned long ofsAddr;
1590 if ((mode < 0) || (mode > 2))
1591 return;
1592 ofsAddr = moxaTableAddr[port];
1593 moxafunc(ofsAddr, FC_FlushQueue, mode);
1594 if (mode != 1) {
1595 moxaLowChkFlag[port] = 0;
1596 low_water_check(ofsAddr);
1597 }
1598 }
1599
1600 int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1601 {
1602 int i;
1603 int status;
1604 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1605 void __user *argp = (void __user *)arg;
1606
1607 if (port == QueryPort) {
1608 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1609 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1610 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1611 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1612 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1613 return (-EINVAL);
1614 }
1615 switch (cmd) {
1616 case MOXA_GET_CONF:
1617 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS * sizeof(moxa_board_conf)))
1618 return -EFAULT;
1619 return (0);
1620 case MOXA_INIT_DRIVER:
1621 if ((int) arg == 0x404)
1622 MoxaDriverInit();
1623 return (0);
1624 case MOXA_GETDATACOUNT:
1625 moxaLog.tick = jiffies;
1626 if(copy_to_user(argp, &moxaLog, sizeof(mon_st)))
1627 return -EFAULT;
1628 return (0);
1629 case MOXA_FLUSH_QUEUE:
1630 MoxaPortFlushData(port, arg);
1631 return (0);
1632 case MOXA_GET_IOQUEUE:
1633 for (i = 0; i < MAX_PORTS; i++) {
1634 if (moxaChkPort[i]) {
1635 temp_queue[i].inq = MoxaPortRxQueue(i);
1636 temp_queue[i].outq = MoxaPortTxQueue(i);
1637 }
1638 }
1639 if(copy_to_user(argp, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
1640 return -EFAULT;
1641 return (0);
1642 case MOXA_GET_OQUEUE:
1643 i = MoxaPortTxQueue(port);
1644 return put_user(i, (unsigned long __user *)argp);
1645 case MOXA_GET_IQUEUE:
1646 i = MoxaPortRxQueue(port);
1647 return put_user(i, (unsigned long __user *)argp);
1648 case MOXA_GET_MAJOR:
1649 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1650 return -EFAULT;
1651 return 0;
1652 case MOXA_GET_CUMAJOR:
1653 i = 0;
1654 if(copy_to_user(argp, &i, sizeof(int)))
1655 return -EFAULT;
1656 return 0;
1657 case MOXA_GETMSTATUS:
1658 for (i = 0; i < MAX_PORTS; i++) {
1659 GMStatus[i].ri = 0;
1660 GMStatus[i].dcd = 0;
1661 GMStatus[i].dsr = 0;
1662 GMStatus[i].cts = 0;
1663 if (!moxaChkPort[i]) {
1664 continue;
1665 } else {
1666 status = MoxaPortLineStatus(moxaChannels[i].port);
1667 if (status & 1)
1668 GMStatus[i].cts = 1;
1669 if (status & 2)
1670 GMStatus[i].dsr = 1;
1671 if (status & 4)
1672 GMStatus[i].dcd = 1;
1673 }
1674
1675 if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
1676 GMStatus[i].cflag = moxaChannels[i].cflag;
1677 else
1678 GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
1679 }
1680 if(copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
1681 return -EFAULT;
1682 return 0;
1683 default:
1684 return (-ENOIOCTLCMD);
1685 case MOXA_LOAD_BIOS:
1686 case MOXA_FIND_BOARD:
1687 case MOXA_LOAD_C320B:
1688 case MOXA_LOAD_CODE:
1689 break;
1690 }
1691
1692 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1693 return -EFAULT;
1694 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
1695 return -EINVAL;
1696
1697 switch(cmd)
1698 {
1699 case MOXA_LOAD_BIOS:
1700 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1701 return (i);
1702 case MOXA_FIND_BOARD:
1703 return moxafindcard(dltmp.cardno);
1704 case MOXA_LOAD_C320B:
1705 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1706 default: /* to keep gcc happy */
1707 return (0);
1708 case MOXA_LOAD_CODE:
1709 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1710 if (i == -1)
1711 return (-EFAULT);
1712 return (i);
1713
1714 }
1715 }
1716
1717 int MoxaDriverPoll(void)
1718 {
1719 register ushort temp;
1720 register int card;
1721 unsigned long ip, ofsAddr;
1722 int port, p, ports;
1723
1724 if (moxaCard == 0)
1725 return (-1);
1726 for (card = 0; card < MAX_BOARDS; card++) {
1727 if ((ports = moxa_boards[card].numPorts) == 0)
1728 continue;
1729 if (readb(moxaIntPend[card]) == 0xff) {
1730 ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
1731 p = card * MAX_PORTS_PER_BOARD;
1732 ports <<= 1;
1733 for (port = 0; port < ports; port += 2, p++) {
1734 if ((temp = readw(ip + port)) != 0) {
1735 writew(0, ip + port);
1736 ofsAddr = moxaTableAddr[p];
1737 if (temp & IntrTx)
1738 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1739 if (temp & IntrBreak) {
1740 moxaBreakCnt[p]++;
1741 }
1742 if (temp & IntrLine) {
1743 if (readb(ofsAddr + FlagStat) & DCD_state) {
1744 if ((moxaDCDState[p] & DCD_oldstate) == 0)
1745 moxaDCDState[p] = (DCD_oldstate |
1746 DCD_changed);
1747 } else {
1748 if (moxaDCDState[p] & DCD_oldstate)
1749 moxaDCDState[p] = DCD_changed;
1750 }
1751 }
1752 }
1753 }
1754 writeb(0, moxaIntPend[card]);
1755 }
1756 if (moxaLowWaterChk) {
1757 p = card * MAX_PORTS_PER_BOARD;
1758 for (port = 0; port < ports; port++, p++) {
1759 if (moxaLowChkFlag[p]) {
1760 moxaLowChkFlag[p] = 0;
1761 ofsAddr = moxaTableAddr[p];
1762 low_water_check(ofsAddr);
1763 }
1764 }
1765 }
1766 }
1767 moxaLowWaterChk = 0;
1768 return (0);
1769 }
1770
1771 /*****************************************************************************
1772 * Card level function: *
1773 * 1. MoxaPortsOfCard(int cardno); *
1774 *****************************************************************************/
1775 int MoxaPortsOfCard(int cardno)
1776 {
1777
1778 if (moxa_boards[cardno].boardType == 0)
1779 return (0);
1780 return (moxa_boards[cardno].numPorts);
1781 }
1782
1783 /*****************************************************************************
1784 * Port level functions: *
1785 * 1. MoxaPortIsValid(int port); *
1786 * 2. MoxaPortEnable(int port); *
1787 * 3. MoxaPortDisable(int port); *
1788 * 4. MoxaPortGetMaxBaud(int port); *
1789 * 5. MoxaPortGetCurBaud(int port); *
1790 * 6. MoxaPortSetBaud(int port, long baud); *
1791 * 7. MoxaPortSetMode(int port, int databit, int stopbit, int parity); *
1792 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1793 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1794 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1795 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1796 * 12. MoxaPortLineStatus(int port); *
1797 * 13. MoxaPortDCDChange(int port); *
1798 * 14. MoxaPortDCDON(int port); *
1799 * 15. MoxaPortFlushData(int port, int mode); *
1800 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1801 * 17. MoxaPortReadData(int port, unsigned char * buffer, int length); *
1802 * 18. MoxaPortTxBufSize(int port); *
1803 * 19. MoxaPortRxBufSize(int port); *
1804 * 20. MoxaPortTxQueue(int port); *
1805 * 21. MoxaPortTxFree(int port); *
1806 * 22. MoxaPortRxQueue(int port); *
1807 * 23. MoxaPortRxFree(int port); *
1808 * 24. MoxaPortTxDisable(int port); *
1809 * 25. MoxaPortTxEnable(int port); *
1810 * 26. MoxaPortGetBrkCnt(int port); *
1811 * 27. MoxaPortResetBrkCnt(int port); *
1812 * 28. MoxaPortSetXonXoff(int port, int xonValue, int xoffValue); *
1813 * 29. MoxaPortIsTxHold(int port); *
1814 * 30. MoxaPortSendBreak(int port, int ticks); *
1815 *****************************************************************************/
1816 /*
1817 * Moxa Port Number Description:
1818 *
1819 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1820 * the port number using in MOXA driver functions will be 0 to 31 for
1821 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1822 * to 127 for fourth. For example, if you setup three MOXA boards,
1823 * first board is C218, second board is C320-16 and third board is
1824 * C320-32. The port number of first board (C218 - 8 ports) is from
1825 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1826 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1827 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1828 * 127 will be invalid.
1829 *
1830 *
1831 * Moxa Functions Description:
1832 *
1833 * Function 1: Driver initialization routine, this routine must be
1834 * called when initialized driver.
1835 * Syntax:
1836 * void MoxaDriverInit();
1837 *
1838 *
1839 * Function 2: Moxa driver private IOCTL command processing.
1840 * Syntax:
1841 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1842 *
1843 * unsigned int cmd : IOCTL command
1844 * unsigned long arg : IOCTL argument
1845 * int port : port number (0 - 127)
1846 *
1847 * return: 0 (OK)
1848 * -EINVAL
1849 * -ENOIOCTLCMD
1850 *
1851 *
1852 * Function 3: Moxa driver polling process routine.
1853 * Syntax:
1854 * int MoxaDriverPoll(void);
1855 *
1856 * return: 0 ; polling O.K.
1857 * -1 : no any Moxa card.
1858 *
1859 *
1860 * Function 4: Get the ports of this card.
1861 * Syntax:
1862 * int MoxaPortsOfCard(int cardno);
1863 *
1864 * int cardno : card number (0 - 3)
1865 *
1866 * return: 0 : this card is invalid
1867 * 8/16/24/32
1868 *
1869 *
1870 * Function 5: Check this port is valid or invalid
1871 * Syntax:
1872 * int MoxaPortIsValid(int port);
1873 * int port : port number (0 - 127, ref port description)
1874 *
1875 * return: 0 : this port is invalid
1876 * 1 : this port is valid
1877 *
1878 *
1879 * Function 6: Enable this port to start Tx/Rx data.
1880 * Syntax:
1881 * void MoxaPortEnable(int port);
1882 * int port : port number (0 - 127)
1883 *
1884 *
1885 * Function 7: Disable this port
1886 * Syntax:
1887 * void MoxaPortDisable(int port);
1888 * int port : port number (0 - 127)
1889 *
1890 *
1891 * Function 8: Get the maximun available baud rate of this port.
1892 * Syntax:
1893 * long MoxaPortGetMaxBaud(int port);
1894 * int port : port number (0 - 127)
1895 *
1896 * return: 0 : this port is invalid
1897 * 38400/57600/115200 bps
1898 *
1899 *
1900 * Function 9: Get the current baud rate of this port.
1901 * Syntax:
1902 * long MoxaPortGetCurBaud(int port);
1903 * int port : port number (0 - 127)
1904 *
1905 * return: 0 : this port is invalid
1906 * 50 - 115200 bps
1907 *
1908 *
1909 * Function 10: Setting baud rate of this port.
1910 * Syntax:
1911 * long MoxaPortSetBaud(int port, long baud);
1912 * int port : port number (0 - 127)
1913 * long baud : baud rate (50 - 115200)
1914 *
1915 * return: 0 : this port is invalid or baud < 50
1916 * 50 - 115200 : the real baud rate set to the port, if
1917 * the argument baud is large than maximun
1918 * available baud rate, the real setting
1919 * baud rate will be the maximun baud rate.
1920 *
1921 *
1922 * Function 11: Setting the data-bits/stop-bits/parity of this port
1923 * Syntax:
1924 * int MoxaPortSetMode(int port, int databits, int stopbits, int parity);
1925 * int port : port number (0 - 127)
1926 * int databits : data bits (8/7/6/5)
1927 * int stopbits : stop bits (2/1/0, 0 show 1.5 stop bits)
1928 int parity : parity (0:None,1:Odd,2:Even,3:Mark,4:Space)
1929 *
1930 * return: -1 : invalid parameter
1931 * 0 : setting O.K.
1932 *
1933 *
1934 * Function 12: Configure the port.
1935 * Syntax:
1936 * int MoxaPortSetTermio(int port, struct termios *termio);
1937 * int port : port number (0 - 127)
1938 * struct termios * termio : termio structure pointer
1939 *
1940 * return: -1 : this port is invalid or termio == NULL
1941 * 0 : setting O.K.
1942 *
1943 *
1944 * Function 13: Get the DTR/RTS state of this port.
1945 * Syntax:
1946 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1947 * int port : port number (0 - 127)
1948 * int * dtrState : pointer to INT to receive the current DTR
1949 * state. (if NULL, this function will not
1950 * write to this address)
1951 * int * rtsState : pointer to INT to receive the current RTS
1952 * state. (if NULL, this function will not
1953 * write to this address)
1954 *
1955 * return: -1 : this port is invalid
1956 * 0 : O.K.
1957 *
1958 *
1959 * Function 14: Setting the DTR/RTS output state of this port.
1960 * Syntax:
1961 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1962 * int port : port number (0 - 127)
1963 * int dtrState : DTR output state (0: off, 1: on)
1964 * int rtsState : RTS output state (0: off, 1: on)
1965 *
1966 *
1967 * Function 15: Setting the flow control of this port.
1968 * Syntax:
1969 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1970 * int txFlow,int xany);
1971 * int port : port number (0 - 127)
1972 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1973 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1974 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1975 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1976 * int xany : S/W XANY flow control (0: no, 1: yes)
1977 *
1978 *
1979 * Function 16: Get ths line status of this port
1980 * Syntax:
1981 * int MoxaPortLineStatus(int port);
1982 * int port : port number (0 - 127)
1983 *
1984 * return: Bit 0 - CTS state (0: off, 1: on)
1985 * Bit 1 - DSR state (0: off, 1: on)
1986 * Bit 2 - DCD state (0: off, 1: on)
1987 *
1988 *
1989 * Function 17: Check the DCD state has changed since the last read
1990 * of this function.
1991 * Syntax:
1992 * int MoxaPortDCDChange(int port);
1993 * int port : port number (0 - 127)
1994 *
1995 * return: 0 : no changed
1996 * 1 : DCD has changed
1997 *
1998 *
1999 * Function 18: Check ths current DCD state is ON or not.
2000 * Syntax:
2001 * int MoxaPortDCDON(int port);
2002 * int port : port number (0 - 127)
2003 *
2004 * return: 0 : DCD off
2005 * 1 : DCD on
2006 *
2007 *
2008 * Function 19: Flush the Rx/Tx buffer data of this port.
2009 * Syntax:
2010 * void MoxaPortFlushData(int port, int mode);
2011 * int port : port number (0 - 127)
2012 * int mode
2013 * 0 : flush the Rx buffer
2014 * 1 : flush the Tx buffer
2015 * 2 : flush the Rx and Tx buffer
2016 *
2017 *
2018 * Function 20: Write data.
2019 * Syntax:
2020 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
2021 * int port : port number (0 - 127)
2022 * unsigned char * buffer : pointer to write data buffer.
2023 * int length : write data length
2024 *
2025 * return: 0 - length : real write data length
2026 *
2027 *
2028 * Function 21: Read data.
2029 * Syntax:
2030 * int MoxaPortReadData(int port, unsigned char * buffer, int length);
2031 * int port : port number (0 - 127)
2032 * unsigned char * buffer : pointer to read data buffer.
2033 * int length : read data buffer length
2034 *
2035 * return: 0 - length : real read data length
2036 *
2037 *
2038 * Function 22: Get the Tx buffer size of this port
2039 * Syntax:
2040 * int MoxaPortTxBufSize(int port);
2041 * int port : port number (0 - 127)
2042 *
2043 * return: .. : Tx buffer size
2044 *
2045 *
2046 * Function 23: Get the Rx buffer size of this port
2047 * Syntax:
2048 * int MoxaPortRxBufSize(int port);
2049 * int port : port number (0 - 127)
2050 *
2051 * return: .. : Rx buffer size
2052 *
2053 *
2054 * Function 24: Get the Tx buffer current queued data bytes
2055 * Syntax:
2056 * int MoxaPortTxQueue(int port);
2057 * int port : port number (0 - 127)
2058 *
2059 * return: .. : Tx buffer current queued data bytes
2060 *
2061 *
2062 * Function 25: Get the Tx buffer current free space
2063 * Syntax:
2064 * int MoxaPortTxFree(int port);
2065 * int port : port number (0 - 127)
2066 *
2067 * return: .. : Tx buffer current free space
2068 *
2069 *
2070 * Function 26: Get the Rx buffer current queued data bytes
2071 * Syntax:
2072 * int MoxaPortRxQueue(int port);
2073 * int port : port number (0 - 127)
2074 *
2075 * return: .. : Rx buffer current queued data bytes
2076 *
2077 *
2078 * Function 27: Get the Rx buffer current free space
2079 * Syntax:
2080 * int MoxaPortRxFree(int port);
2081 * int port : port number (0 - 127)
2082 *
2083 * return: .. : Rx buffer current free space
2084 *
2085 *
2086 * Function 28: Disable port data transmission.
2087 * Syntax:
2088 * void MoxaPortTxDisable(int port);
2089 * int port : port number (0 - 127)
2090 *
2091 *
2092 * Function 29: Enable port data transmission.
2093 * Syntax:
2094 * void MoxaPortTxEnable(int port);
2095 * int port : port number (0 - 127)
2096 *
2097 *
2098 * Function 30: Get the received BREAK signal count.
2099 * Syntax:
2100 * int MoxaPortGetBrkCnt(int port);
2101 * int port : port number (0 - 127)
2102 *
2103 * return: 0 - .. : BREAK signal count
2104 *
2105 *
2106 * Function 31: Get the received BREAK signal count and reset it.
2107 * Syntax:
2108 * int MoxaPortResetBrkCnt(int port);
2109 * int port : port number (0 - 127)
2110 *
2111 * return: 0 - .. : BREAK signal count
2112 *
2113 *
2114 * Function 32: Set the S/W flow control new XON/XOFF value, default
2115 * XON is 0x11 & XOFF is 0x13.
2116 * Syntax:
2117 * void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue);
2118 * int port : port number (0 - 127)
2119 * int xonValue : new XON value (0 - 255)
2120 * int xoffValue : new XOFF value (0 - 255)
2121 *
2122 *
2123 * Function 33: Check this port's transmission is hold by remote site
2124 * because the flow control.
2125 * Syntax:
2126 * int MoxaPortIsTxHold(int port);
2127 * int port : port number (0 - 127)
2128 *
2129 * return: 0 : normal
2130 * 1 : hold by remote site
2131 *
2132 *
2133 * Function 34: Send out a BREAK signal.
2134 * Syntax:
2135 * void MoxaPortSendBreak(int port, int ms100);
2136 * int port : port number (0 - 127)
2137 * int ms100 : break signal time interval.
2138 * unit: 100 mini-second. if ms100 == 0, it will
2139 * send out a about 250 ms BREAK signal.
2140 *
2141 */
2142 int MoxaPortIsValid(int port)
2143 {
2144
2145 if (moxaCard == 0)
2146 return (0);
2147 if (moxaChkPort[port] == 0)
2148 return (0);
2149 return (1);
2150 }
2151
2152 void MoxaPortEnable(int port)
2153 {
2154 unsigned long ofsAddr;
2155 int MoxaPortLineStatus(int);
2156 short lowwater = 512;
2157
2158 ofsAddr = moxaTableAddr[port];
2159 writew(lowwater, ofsAddr + Low_water);
2160 moxaBreakCnt[port] = 0;
2161 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2162 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2163 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
2164 } else {
2165 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
2166 }
2167
2168 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
2169 moxafunc(ofsAddr, FC_FlushQueue, 2);
2170
2171 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
2172 MoxaPortLineStatus(port);
2173 }
2174
2175 void MoxaPortDisable(int port)
2176 {
2177 unsigned long ofsAddr;
2178
2179 ofsAddr = moxaTableAddr[port];
2180 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
2181 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
2182 writew(0, ofsAddr + HostStat);
2183 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
2184 }
2185
2186 long MoxaPortGetMaxBaud(int port)
2187 {
2188 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2189 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
2190 return (460800L);
2191 else
2192 return (921600L);
2193 }
2194
2195
2196 long MoxaPortSetBaud(int port, long baud)
2197 {
2198 unsigned long ofsAddr;
2199 long max, clock;
2200 unsigned int val;
2201
2202 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
2203 return (0);
2204 ofsAddr = moxaTableAddr[port];
2205 if (baud > max)
2206 baud = max;
2207 if (max == 38400L)
2208 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2209 else if (max == 57600L)
2210 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2211 else
2212 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2213 val = clock / baud;
2214 moxafunc(ofsAddr, FC_SetBaud, val);
2215 baud = clock / val;
2216 moxaCurBaud[port] = baud;
2217 return (baud);
2218 }
2219
2220 int MoxaPortSetTermio(int port, struct termios *termio)
2221 {
2222 unsigned long ofsAddr;
2223 tcflag_t cflag;
2224 long baud;
2225 tcflag_t mode = 0;
2226
2227 if (moxaChkPort[port] == 0 || termio == 0)
2228 return (-1);
2229 ofsAddr = moxaTableAddr[port];
2230 cflag = termio->c_cflag; /* termio->c_cflag */
2231
2232 mode = termio->c_cflag & CSIZE;
2233 if (mode == CS5)
2234 mode = MX_CS5;
2235 else if (mode == CS6)
2236 mode = MX_CS6;
2237 else if (mode == CS7)
2238 mode = MX_CS7;
2239 else if (mode == CS8)
2240 mode = MX_CS8;
2241
2242 if (termio->c_cflag & CSTOPB) {
2243 if (mode == MX_CS5)
2244 mode |= MX_STOP15;
2245 else
2246 mode |= MX_STOP2;
2247 } else
2248 mode |= MX_STOP1;
2249
2250 if (termio->c_cflag & PARENB) {
2251 if (termio->c_cflag & PARODD)
2252 mode |= MX_PARODD;
2253 else
2254 mode |= MX_PAREVEN;
2255 } else
2256 mode |= MX_PARNONE;
2257
2258 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2259
2260 cflag &= (CBAUD | CBAUDEX);
2261 #ifndef B921600
2262 #define B921600 (B460800+1)
2263 #endif
2264 switch (cflag) {
2265 case B921600:
2266 baud = 921600L;
2267 break;
2268 case B460800:
2269 baud = 460800L;
2270 break;
2271 case B230400:
2272 baud = 230400L;
2273 break;
2274 case B115200:
2275 baud = 115200L;
2276 break;
2277 case B57600:
2278 baud = 57600L;
2279 break;
2280 case B38400:
2281 baud = 38400L;
2282 break;
2283 case B19200:
2284 baud = 19200L;
2285 break;
2286 case B9600:
2287 baud = 9600L;
2288 break;
2289 case B4800:
2290 baud = 4800L;
2291 break;
2292 case B2400:
2293 baud = 2400L;
2294 break;
2295 case B1800:
2296 baud = 1800L;
2297 break;
2298 case B1200:
2299 baud = 1200L;
2300 break;
2301 case B600:
2302 baud = 600L;
2303 break;
2304 case B300:
2305 baud = 300L;
2306 break;
2307 case B200:
2308 baud = 200L;
2309 break;
2310 case B150:
2311 baud = 150L;
2312 break;
2313 case B134:
2314 baud = 134L;
2315 break;
2316 case B110:
2317 baud = 110L;
2318 break;
2319 case B75:
2320 baud = 75L;
2321 break;
2322 case B50:
2323 baud = 50L;
2324 break;
2325 default:
2326 baud = 0;
2327 }
2328 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2329 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2330 if (baud == 921600L)
2331 return (-1);
2332 }
2333 MoxaPortSetBaud(port, baud);
2334
2335 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2336 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2337 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2338 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2339 wait_finish(ofsAddr);
2340
2341 }
2342 return (0);
2343 }
2344
2345 int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2346 {
2347
2348 if (!MoxaPortIsValid(port))
2349 return (-1);
2350 if (dtrState) {
2351 if (moxaLineCtrl[port] & DTR_ON)
2352 *dtrState = 1;
2353 else
2354 *dtrState = 0;
2355 }
2356 if (rtsState) {
2357 if (moxaLineCtrl[port] & RTS_ON)
2358 *rtsState = 1;
2359 else
2360 *rtsState = 0;
2361 }
2362 return (0);
2363 }
2364
2365 void MoxaPortLineCtrl(int port, int dtr, int rts)
2366 {
2367 unsigned long ofsAddr;
2368 int mode;
2369
2370 ofsAddr = moxaTableAddr[port];
2371 mode = 0;
2372 if (dtr)
2373 mode |= DTR_ON;
2374 if (rts)
2375 mode |= RTS_ON;
2376 moxaLineCtrl[port] = mode;
2377 moxafunc(ofsAddr, FC_LineControl, mode);
2378 }
2379
2380 void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2381 {
2382 unsigned long ofsAddr;
2383 int mode;
2384
2385 ofsAddr = moxaTableAddr[port];
2386 mode = 0;
2387 if (rts)
2388 mode |= RTS_FlowCtl;
2389 if (cts)
2390 mode |= CTS_FlowCtl;
2391 if (txflow)
2392 mode |= Tx_FlowCtl;
2393 if (rxflow)
2394 mode |= Rx_FlowCtl;
2395 if (txany)
2396 mode |= IXM_IXANY;
2397 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2398 }
2399
2400 int MoxaPortLineStatus(int port)
2401 {
2402 unsigned long ofsAddr;
2403 int val;
2404
2405 ofsAddr = moxaTableAddr[port];
2406 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2407 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2408 moxafunc(ofsAddr, FC_LineStatus, 0);
2409 val = readw(ofsAddr + FuncArg);
2410 } else {
2411 val = readw(ofsAddr + FlagStat) >> 4;
2412 }
2413 val &= 0x0B;
2414 if (val & 8) {
2415 val |= 4;
2416 if ((moxaDCDState[port] & DCD_oldstate) == 0)
2417 moxaDCDState[port] = (DCD_oldstate | DCD_changed);
2418 } else {
2419 if (moxaDCDState[port] & DCD_oldstate)
2420 moxaDCDState[port] = DCD_changed;
2421 }
2422 val &= 7;
2423 return (val);
2424 }
2425
2426 int MoxaPortDCDChange(int port)
2427 {
2428 int n;
2429
2430 if (moxaChkPort[port] == 0)
2431 return (0);
2432 n = moxaDCDState[port];
2433 moxaDCDState[port] &= ~DCD_changed;
2434 n &= DCD_changed;
2435 return (n);
2436 }
2437
2438 int MoxaPortDCDON(int port)
2439 {
2440 int n;
2441
2442 if (moxaChkPort[port] == 0)
2443 return (0);
2444 if (moxaDCDState[port] & DCD_oldstate)
2445 n = 1;
2446 else
2447 n = 0;
2448 return (n);
2449 }
2450
2451
2452 /*
2453 int MoxaDumpMem(int port, unsigned char * buffer, int len)
2454 {
2455 int i;
2456 unsigned long baseAddr,ofsAddr,ofs;
2457
2458 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2459 ofs = baseAddr + DynPage_addr + pageofs;
2460 if (len > 0x2000L)
2461 len = 0x2000L;
2462 for (i = 0; i < len; i++)
2463 buffer[i] = readb(ofs+i);
2464 }
2465 */
2466
2467
2468 int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2469 {
2470 int c, total, i;
2471 ushort tail;
2472 int cnt;
2473 ushort head, tx_mask, spage, epage;
2474 ushort pageno, pageofs, bufhead;
2475 unsigned long baseAddr, ofsAddr, ofs;
2476
2477 ofsAddr = moxaTableAddr[port];
2478 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2479 tx_mask = readw(ofsAddr + TX_mask);
2480 spage = readw(ofsAddr + Page_txb);
2481 epage = readw(ofsAddr + EndPage_txb);
2482 tail = readw(ofsAddr + TXwptr);
2483 head = readw(ofsAddr + TXrptr);
2484 c = (head > tail) ? (head - tail - 1)
2485 : (head - tail + tx_mask);
2486 if (c > len)
2487 c = len;
2488 moxaLog.txcnt[port] += c;
2489 total = c;
2490 if (spage == epage) {
2491 bufhead = readw(ofsAddr + Ofs_txb);
2492 writew(spage, baseAddr + Control_reg);
2493 while (c > 0) {
2494 if (head > tail)
2495 len = head - tail - 1;
2496 else
2497 len = tx_mask + 1 - tail;
2498 len = (c > len) ? len : c;
2499 ofs = baseAddr + DynPage_addr + bufhead + tail;
2500 for (i = 0; i < len; i++)
2501 writeb(*buffer++, ofs + i);
2502 tail = (tail + len) & tx_mask;
2503 c -= len;
2504 }
2505 writew(tail, ofsAddr + TXwptr);
2506 } else {
2507 len = c;
2508 pageno = spage + (tail >> 13);
2509 pageofs = tail & Page_mask;
2510 do {
2511 cnt = Page_size - pageofs;
2512 if (cnt > c)
2513 cnt = c;
2514 c -= cnt;
2515 writeb(pageno, baseAddr + Control_reg);
2516 ofs = baseAddr + DynPage_addr + pageofs;
2517 for (i = 0; i < cnt; i++)
2518 writeb(*buffer++, ofs + i);
2519 if (c == 0) {
2520 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2521 break;
2522 }
2523 if (++pageno == epage)
2524 pageno = spage;
2525 pageofs = 0;
2526 } while (1);
2527 }
2528 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2529 return (total);
2530 }
2531
2532 int MoxaPortReadData(int port, unsigned char * buffer, int space)
2533 {
2534 register ushort head, pageofs;
2535 int i, count, cnt, len, total, remain;
2536 ushort tail, rx_mask, spage, epage;
2537 ushort pageno, bufhead;
2538 unsigned long baseAddr, ofsAddr, ofs;
2539
2540 ofsAddr = moxaTableAddr[port];
2541 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2542 head = readw(ofsAddr + RXrptr);
2543 tail = readw(ofsAddr + RXwptr);
2544 rx_mask = readw(ofsAddr + RX_mask);
2545 spage = readw(ofsAddr + Page_rxb);
2546 epage = readw(ofsAddr + EndPage_rxb);
2547 count = (tail >= head) ? (tail - head)
2548 : (tail - head + rx_mask + 1);
2549 if (count == 0)
2550 return (0);
2551
2552 total = (space > count) ? count : space;
2553 remain = count - total;
2554 moxaLog.rxcnt[port] += total;
2555 count = total;
2556 if (spage == epage) {
2557 bufhead = readw(ofsAddr + Ofs_rxb);
2558 writew(spage, baseAddr + Control_reg);
2559 while (count > 0) {
2560 if (tail >= head)
2561 len = tail - head;
2562 else
2563 len = rx_mask + 1 - head;
2564 len = (count > len) ? len : count;
2565 ofs = baseAddr + DynPage_addr + bufhead + head;
2566 for (i = 0; i < len; i++)
2567 *buffer++ = readb(ofs + i);
2568 head = (head + len) & rx_mask;
2569 count -= len;
2570 }
2571 writew(head, ofsAddr + RXrptr);
2572 } else {
2573 len = count;
2574 pageno = spage + (head >> 13);
2575 pageofs = head & Page_mask;
2576 do {
2577 cnt = Page_size - pageofs;
2578 if (cnt > count)
2579 cnt = count;
2580 count -= cnt;
2581 writew(pageno, baseAddr + Control_reg);
2582 ofs = baseAddr + DynPage_addr + pageofs;
2583 for (i = 0; i < cnt; i++)
2584 *buffer++ = readb(ofs + i);
2585 if (count == 0) {
2586 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2587 break;
2588 }
2589 if (++pageno == epage)
2590 pageno = spage;
2591 pageofs = 0;
2592 } while (1);
2593 }
2594 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2595 moxaLowWaterChk = 1;
2596 moxaLowChkFlag[port] = 1;
2597 }
2598 return (total);
2599 }
2600
2601
2602 int MoxaPortTxQueue(int port)
2603 {
2604 unsigned long ofsAddr;
2605 ushort rptr, wptr, mask;
2606 int len;
2607
2608 ofsAddr = moxaTableAddr[port];
2609 rptr = readw(ofsAddr + TXrptr);
2610 wptr = readw(ofsAddr + TXwptr);
2611 mask = readw(ofsAddr + TX_mask);
2612 len = (wptr - rptr) & mask;
2613 return (len);
2614 }
2615
2616 int MoxaPortTxFree(int port)
2617 {
2618 unsigned long ofsAddr;
2619 ushort rptr, wptr, mask;
2620 int len;
2621
2622 ofsAddr = moxaTableAddr[port];
2623 rptr = readw(ofsAddr + TXrptr);
2624 wptr = readw(ofsAddr + TXwptr);
2625 mask = readw(ofsAddr + TX_mask);
2626 len = mask - ((wptr - rptr) & mask);
2627 return (len);
2628 }
2629
2630 int MoxaPortRxQueue(int port)
2631 {
2632 unsigned long ofsAddr;
2633 ushort rptr, wptr, mask;
2634 int len;
2635
2636 ofsAddr = moxaTableAddr[port];
2637 rptr = readw(ofsAddr + RXrptr);
2638 wptr = readw(ofsAddr + RXwptr);
2639 mask = readw(ofsAddr + RX_mask);
2640 len = (wptr - rptr) & mask;
2641 return (len);
2642 }
2643
2644
2645 void MoxaPortTxDisable(int port)
2646 {
2647 unsigned long ofsAddr;
2648
2649 ofsAddr = moxaTableAddr[port];
2650 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2651 }
2652
2653 void MoxaPortTxEnable(int port)
2654 {
2655 unsigned long ofsAddr;
2656
2657 ofsAddr = moxaTableAddr[port];
2658 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2659 }
2660
2661
2662 int MoxaPortResetBrkCnt(int port)
2663 {
2664 ushort cnt;
2665 cnt = moxaBreakCnt[port];
2666 moxaBreakCnt[port] = 0;
2667 return (cnt);
2668 }
2669
2670
2671 void MoxaPortSendBreak(int port, int ms100)
2672 {
2673 unsigned long ofsAddr;
2674
2675 ofsAddr = moxaTableAddr[port];
2676 if (ms100) {
2677 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2678 moxadelay(ms100 * (HZ / 10));
2679 } else {
2680 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2681 moxadelay(HZ / 4); /* 250 ms */
2682 }
2683 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2684 }
2685
2686 static int moxa_get_serial_info(struct moxa_str *info,
2687 struct serial_struct __user *retinfo)
2688 {
2689 struct serial_struct tmp;
2690
2691 memset(&tmp, 0, sizeof(tmp));
2692 tmp.type = info->type;
2693 tmp.line = info->port;
2694 tmp.port = 0;
2695 tmp.irq = 0;
2696 tmp.flags = info->asyncflags;
2697 tmp.baud_base = 921600;
2698 tmp.close_delay = info->close_delay;
2699 tmp.closing_wait = info->closing_wait;
2700 tmp.custom_divisor = 0;
2701 tmp.hub6 = 0;
2702 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2703 return -EFAULT;
2704 return (0);
2705 }
2706
2707
2708 static int moxa_set_serial_info(struct moxa_str *info,
2709 struct serial_struct __user *new_info)
2710 {
2711 struct serial_struct new_serial;
2712
2713 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2714 return -EFAULT;
2715
2716 if ((new_serial.irq != 0) ||
2717 (new_serial.port != 0) ||
2718 // (new_serial.type != info->type) ||
2719 (new_serial.custom_divisor != 0) ||
2720 (new_serial.baud_base != 921600))
2721 return (-EPERM);
2722
2723 if (!capable(CAP_SYS_ADMIN)) {
2724 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2725 (info->asyncflags & ~ASYNC_USR_MASK)))
2726 return (-EPERM);
2727 } else {
2728 info->close_delay = new_serial.close_delay * HZ / 100;
2729 info->closing_wait = new_serial.closing_wait * HZ / 100;
2730 }
2731
2732 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2733 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2734
2735 if (new_serial.type == PORT_16550A) {
2736 MoxaSetFifo(info->port, 1);
2737 } else {
2738 MoxaSetFifo(info->port, 0);
2739 }
2740
2741 info->type = new_serial.type;
2742 return (0);
2743 }
2744
2745
2746
2747 /*****************************************************************************
2748 * Static local functions: *
2749 *****************************************************************************/
2750 /*
2751 * moxadelay - delays a specified number ticks
2752 */
2753 static void moxadelay(int tick)
2754 {
2755 unsigned long st, et;
2756
2757 st = jiffies;
2758 et = st + tick;
2759 while (time_before(jiffies, et));
2760 }
2761
2762 static void moxafunc(unsigned long ofsAddr, int cmd, ushort arg)
2763 {
2764
2765 writew(arg, ofsAddr + FuncArg);
2766 writew(cmd, ofsAddr + FuncCode);
2767 wait_finish(ofsAddr);
2768 }
2769
2770 static void wait_finish(unsigned long ofsAddr)
2771 {
2772 unsigned long i, j;
2773
2774 i = jiffies;
2775 while (readw(ofsAddr + FuncCode) != 0) {
2776 j = jiffies;
2777 if ((j - i) > moxaFuncTout) {
2778 return;
2779 }
2780 }
2781 }
2782
2783 static void low_water_check(unsigned long ofsAddr)
2784 {
2785 int len;
2786 ushort rptr, wptr, mask;
2787
2788 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2789 rptr = readw(ofsAddr + RXrptr);
2790 wptr = readw(ofsAddr + RXwptr);
2791 mask = readw(ofsAddr + RX_mask);
2792 len = (wptr - rptr) & mask;
2793 if (len <= Low_water)
2794 moxafunc(ofsAddr, FC_SendXon, 0);
2795 }
2796 }
2797
2798 static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2799 {
2800 unsigned long baseAddr;
2801 int i;
2802
2803 if(copy_from_user(moxaBuff, tmp, len))
2804 return -EFAULT;
2805 baseAddr = moxaBaseAddr[cardno];
2806 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2807 moxadelay(1); /* delay 10 ms */
2808 for (i = 0; i < 4096; i++)
2809 writeb(0, baseAddr + i); /* clear fix page */
2810 for (i = 0; i < len; i++)
2811 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2812 writeb(0, baseAddr + Control_reg); /* restart */
2813 return (0);
2814 }
2815
2816 static int moxafindcard(int cardno)
2817 {
2818 unsigned long baseAddr;
2819 ushort tmp;
2820
2821 baseAddr = moxaBaseAddr[cardno];
2822 switch (moxa_boards[cardno].boardType) {
2823 case MOXA_BOARD_C218_ISA:
2824 case MOXA_BOARD_C218_PCI:
2825 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2826 return (-1);
2827 }
2828 break;
2829 case MOXA_BOARD_CP204J:
2830 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2831 return (-1);
2832 }
2833 break;
2834 default:
2835 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2836 return (-1);
2837 }
2838 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2839 return (-2);
2840 }
2841 }
2842 return (0);
2843 }
2844
2845 static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2846 {
2847 unsigned long baseAddr;
2848 int i;
2849
2850 if(len > sizeof(moxaBuff))
2851 return -EINVAL;
2852 if(copy_from_user(moxaBuff, tmp, len))
2853 return -EFAULT;
2854 baseAddr = moxaBaseAddr[cardno];
2855 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2856 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2857 for (i = 0; i < 7168; i++)
2858 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2859 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2860 for (i = 0; i < (len - 7168); i++)
2861 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2862 return (0);
2863 }
2864
2865 static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2866 {
2867 unsigned long baseAddr, ofsAddr;
2868 int retval, port, i;
2869
2870 if(copy_from_user(moxaBuff, tmp, len))
2871 return -EFAULT;
2872 baseAddr = moxaBaseAddr[cardno];
2873 switch (moxa_boards[cardno].boardType) {
2874 case MOXA_BOARD_C218_ISA:
2875 case MOXA_BOARD_C218_PCI:
2876 case MOXA_BOARD_CP204J:
2877 retval = moxaloadc218(cardno, baseAddr, len);
2878 if (retval)
2879 return (retval);
2880 port = cardno * MAX_PORTS_PER_BOARD;
2881 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2882 moxaChkPort[port] = 1;
2883 moxaCurBaud[port] = 9600L;
2884 moxaDCDState[port] = 0;
2885 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2886 ofsAddr = moxaTableAddr[port];
2887 writew(C218rx_mask, ofsAddr + RX_mask);
2888 writew(C218tx_mask, ofsAddr + TX_mask);
2889 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2890 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2891
2892 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2893 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2894
2895 }
2896 break;
2897 default:
2898 retval = moxaloadc320(cardno, baseAddr, len,
2899 &moxa_boards[cardno].numPorts);
2900 if (retval)
2901 return (retval);
2902 port = cardno * MAX_PORTS_PER_BOARD;
2903 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2904 moxaChkPort[port] = 1;
2905 moxaCurBaud[port] = 9600L;
2906 moxaDCDState[port] = 0;
2907 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2908 ofsAddr = moxaTableAddr[port];
2909 if (moxa_boards[cardno].numPorts == 8) {
2910 writew(C320p8rx_mask, ofsAddr + RX_mask);
2911 writew(C320p8tx_mask, ofsAddr + TX_mask);
2912 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2913 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2914 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2915 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2916
2917 } else if (moxa_boards[cardno].numPorts == 16) {
2918 writew(C320p16rx_mask, ofsAddr + RX_mask);
2919 writew(C320p16tx_mask, ofsAddr + TX_mask);
2920 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2921 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2922 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2923 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2924
2925 } else if (moxa_boards[cardno].numPorts == 24) {
2926 writew(C320p24rx_mask, ofsAddr + RX_mask);
2927 writew(C320p24tx_mask, ofsAddr + TX_mask);
2928 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2929 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2930 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2931 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2932 } else if (moxa_boards[cardno].numPorts == 32) {
2933 writew(C320p32rx_mask, ofsAddr + RX_mask);
2934 writew(C320p32tx_mask, ofsAddr + TX_mask);
2935 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2936 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2937 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2938 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2939 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2940 }
2941 }
2942 break;
2943 }
2944 return (0);
2945 }
2946
2947 static int moxaloadc218(int cardno, unsigned long baseAddr, int len)
2948 {
2949 char retry;
2950 int i, j, len1, len2;
2951 ushort usum, *ptr, keycode;
2952
2953 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2954 keycode = CP204J_KeyCode;
2955 else
2956 keycode = C218_KeyCode;
2957 usum = 0;
2958 len1 = len >> 1;
2959 ptr = (ushort *) moxaBuff;
2960 for (i = 0; i < len1; i++)
2961 usum += *(ptr + i);
2962 retry = 0;
2963 do {
2964 len1 = len >> 1;
2965 j = 0;
2966 while (len1) {
2967 len2 = (len1 > 2048) ? 2048 : len1;
2968 len1 -= len2;
2969 for (i = 0; i < len2 << 1; i++)
2970 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2971 j += i;
2972
2973 writew(len2, baseAddr + C218DLoad_len);
2974 writew(0, baseAddr + C218_key);
2975 for (i = 0; i < 100; i++) {
2976 if (readw(baseAddr + C218_key) == keycode)
2977 break;
2978 moxadelay(1); /* delay 10 ms */
2979 }
2980 if (readw(baseAddr + C218_key) != keycode) {
2981 return (-1);
2982 }
2983 }
2984 writew(0, baseAddr + C218DLoad_len);
2985 writew(usum, baseAddr + C218check_sum);
2986 writew(0, baseAddr + C218_key);
2987 for (i = 0; i < 100; i++) {
2988 if (readw(baseAddr + C218_key) == keycode)
2989 break;
2990 moxadelay(1); /* delay 10 ms */
2991 }
2992 retry++;
2993 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2994 if (readb(baseAddr + C218chksum_ok) != 1) {
2995 return (-1);
2996 }
2997 writew(0, baseAddr + C218_key);
2998 for (i = 0; i < 100; i++) {
2999 if (readw(baseAddr + Magic_no) == Magic_code)
3000 break;
3001 moxadelay(1); /* delay 10 ms */
3002 }
3003 if (readw(baseAddr + Magic_no) != Magic_code) {
3004 return (-1);
3005 }
3006 writew(1, baseAddr + Disable_IRQ);
3007 writew(0, baseAddr + Magic_no);
3008 for (i = 0; i < 100; i++) {
3009 if (readw(baseAddr + Magic_no) == Magic_code)
3010 break;
3011 moxadelay(1); /* delay 10 ms */
3012 }
3013 if (readw(baseAddr + Magic_no) != Magic_code) {
3014 return (-1);
3015 }
3016 moxaCard = 1;
3017 moxaIntNdx[cardno] = baseAddr + IRQindex;
3018 moxaIntPend[cardno] = baseAddr + IRQpending;
3019 moxaIntTable[cardno] = baseAddr + IRQtable;
3020 return (0);
3021 }
3022
3023 static int moxaloadc320(int cardno, unsigned long baseAddr, int len, int *numPorts)
3024 {
3025 ushort usum;
3026 int i, j, wlen, len2, retry;
3027 ushort *uptr;
3028
3029 usum = 0;
3030 wlen = len >> 1;
3031 uptr = (ushort *) moxaBuff;
3032 for (i = 0; i < wlen; i++)
3033 usum += uptr[i];
3034 retry = 0;
3035 j = 0;
3036 do {
3037 while (wlen) {
3038 if (wlen > 2048)
3039 len2 = 2048;
3040 else
3041 len2 = wlen;
3042 wlen -= len2;
3043 len2 <<= 1;
3044 for (i = 0; i < len2; i++)
3045 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
3046 len2 >>= 1;
3047 j += i;
3048 writew(len2, baseAddr + C320DLoad_len);
3049 writew(0, baseAddr + C320_key);
3050 for (i = 0; i < 10; i++) {
3051 if (readw(baseAddr + C320_key) == C320_KeyCode)
3052 break;
3053 moxadelay(1);
3054 }
3055 if (readw(baseAddr + C320_key) != C320_KeyCode)
3056 return (-1);
3057 }
3058 writew(0, baseAddr + C320DLoad_len);
3059 writew(usum, baseAddr + C320check_sum);
3060 writew(0, baseAddr + C320_key);
3061 for (i = 0; i < 10; i++) {
3062 if (readw(baseAddr + C320_key) == C320_KeyCode)
3063 break;
3064 moxadelay(1);
3065 }
3066 retry++;
3067 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
3068 if (readb(baseAddr + C320chksum_ok) != 1)
3069 return (-1);
3070 writew(0, baseAddr + C320_key);
3071 for (i = 0; i < 600; i++) {
3072 if (readw(baseAddr + Magic_no) == Magic_code)
3073 break;
3074 moxadelay(1);
3075 }
3076 if (readw(baseAddr + Magic_no) != Magic_code)
3077 return (-100);
3078
3079 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
3080 writew(0x3800, baseAddr + TMS320_PORT1);
3081 writew(0x3900, baseAddr + TMS320_PORT2);
3082 writew(28499, baseAddr + TMS320_CLOCK);
3083 } else {
3084 writew(0x3200, baseAddr + TMS320_PORT1);
3085 writew(0x3400, baseAddr + TMS320_PORT2);
3086 writew(19999, baseAddr + TMS320_CLOCK);
3087 }
3088 writew(1, baseAddr + Disable_IRQ);
3089 writew(0, baseAddr + Magic_no);
3090 for (i = 0; i < 500; i++) {
3091 if (readw(baseAddr + Magic_no) == Magic_code)
3092 break;
3093 moxadelay(1);
3094 }
3095 if (readw(baseAddr + Magic_no) != Magic_code)
3096 return (-102);
3097
3098 j = readw(baseAddr + Module_cnt);
3099 if (j <= 0)
3100 return (-101);
3101 *numPorts = j * 8;
3102 writew(j, baseAddr + Module_no);
3103 writew(0, baseAddr + Magic_no);
3104 for (i = 0; i < 600; i++) {
3105 if (readw(baseAddr + Magic_no) == Magic_code)
3106 break;
3107 moxadelay(1);
3108 }
3109 if (readw(baseAddr + Magic_no) != Magic_code)
3110 return (-102);
3111 moxaCard = 1;
3112 moxaIntNdx[cardno] = baseAddr + IRQindex;
3113 moxaIntPend[cardno] = baseAddr + IRQpending;
3114 moxaIntTable[cardno] = baseAddr + IRQtable;
3115 return (0);
3116 }
3117
3118 long MoxaPortGetCurBaud(int port)
3119 {
3120
3121 if (moxaChkPort[port] == 0)
3122 return (0);
3123 return (moxaCurBaud[port]);
3124 }
3125
3126 static void MoxaSetFifo(int port, int enable)
3127 {
3128 unsigned long ofsAddr = moxaTableAddr[port];
3129
3130 if (!enable) {
3131 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
3132 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
3133 } else {
3134 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
3135 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
3136 }
3137 }
3138
3139 #if 0
3140 int MoxaPortSetMode(int port, int databits, int stopbits, int parity)
3141 {
3142 unsigned long ofsAddr;
3143 int val;
3144
3145 val = 0;
3146 switch (databits) {
3147 case 5:
3148 val |= 0;
3149 break;
3150 case 6:
3151 val |= 1;
3152 break;
3153 case 7:
3154 val |= 2;
3155 break;
3156 case 8:
3157 val |= 3;
3158 break;
3159 default:
3160 return (-1);
3161 }
3162 switch (stopbits) {
3163 case 0:
3164 val |= 0;
3165 break; /* stop bits 1.5 */
3166 case 1:
3167 val |= 0;
3168 break;
3169 case 2:
3170 val |= 4;
3171 break;
3172 default:
3173 return (-1);
3174 }
3175 switch (parity) {
3176 case 0:
3177 val |= 0x00;
3178 break; /* None */
3179 case 1:
3180 val |= 0x08;
3181 break; /* Odd */
3182 case 2:
3183 val |= 0x18;
3184 break; /* Even */
3185 case 3:
3186 val |= 0x28;
3187 break; /* Mark */
3188 case 4:
3189 val |= 0x38;
3190 break; /* Space */
3191 default:
3192 return (-1);
3193 }
3194 ofsAddr = moxaTableAddr[port];
3195 moxafunc(ofsAddr, FC_SetMode, val);
3196 return (0);
3197 }
3198
3199 int MoxaPortTxBufSize(int port)
3200 {
3201 unsigned long ofsAddr;
3202 int size;
3203
3204 ofsAddr = moxaTableAddr[port];
3205 size = readw(ofsAddr + TX_mask);
3206 return (size);
3207 }
3208
3209 int MoxaPortRxBufSize(int port)
3210 {
3211 unsigned long ofsAddr;
3212 int size;
3213
3214 ofsAddr = moxaTableAddr[port];
3215 size = readw(ofsAddr + RX_mask);
3216 return (size);
3217 }
3218
3219 int MoxaPortRxFree(int port)
3220 {
3221 unsigned long ofsAddr;
3222 ushort rptr, wptr, mask;
3223 int len;
3224
3225 ofsAddr = moxaTableAddr[port];
3226 rptr = readw(ofsAddr + RXrptr);
3227 wptr = readw(ofsAddr + RXwptr);
3228 mask = readw(ofsAddr + RX_mask);
3229 len = mask - ((wptr - rptr) & mask);
3230 return (len);
3231 }
3232 int MoxaPortGetBrkCnt(int port)
3233 {
3234 return (moxaBreakCnt[port]);
3235 }
3236
3237 void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue)
3238 {
3239 unsigned long ofsAddr;
3240
3241 ofsAddr = moxaTableAddr[port];
3242 writew(xonValue, ofsAddr + FuncArg);
3243 writew(xoffValue, ofsAddr + FuncArg1);
3244 writew(FC_SetXonXoff, ofsAddr + FuncCode);
3245 wait_finish(ofsAddr);
3246 }
3247
3248 int MoxaPortIsTxHold(int port)
3249 {
3250 unsigned long ofsAddr;
3251 int val;
3252
3253 ofsAddr = moxaTableAddr[port];
3254 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
3255 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
3256 moxafunc(ofsAddr, FC_GetCCSR, 0);
3257 val = readw(ofsAddr + FuncArg);
3258 if (val & 0x04)
3259 return (1);
3260 } else {
3261 if (readw(ofsAddr + FlagStat) & Tx_flowOff)
3262 return (1);
3263 }
3264 return (0);
3265 }
3266 #endif
MOXA 2.6.9 from sdlinux-moxaart.tgz