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- Andries Brouwer: final isofs pieces.
[davej-history.git] / drivers / char / moxa.c
blob7ceccdcbc44362bc631edb7bd065fcbb00315303
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/version.h>
36 #include <linux/mm.h>
37 #include <linux/ioport.h>
38 #include <linux/errno.h>
39 #include <linux/signal.h>
40 #include <linux/sched.h>
41 #include <linux/timer.h>
42 #include <linux/interrupt.h>
43 #include <linux/tty.h>
44 #include <linux/tty_flip.h>
45 #include <linux/major.h>
46 #include <linux/string.h>
47 #include <linux/fcntl.h>
48 #include <linux/ptrace.h>
49 #include <linux/serial.h>
50 #include <linux/tty_driver.h>
51 #include <linux/delay.h>
52 #include <linux/pci.h>
53
54 #include <asm/system.h>
55 #include <asm/io.h>
56 #include <asm/segment.h>
57 #include <asm/bitops.h>
58 #include <asm/uaccess.h>
59
60 #define MOXA_VERSION "5.1k"
61
62 #define MOXAMAJOR 172
63 #define MOXACUMAJOR 173
64
65 #define put_to_user(arg1, arg2) put_user(arg1, (unsigned long *)arg2)
66 #define get_from_user(arg1, arg2) get_user(arg1, (unsigned int *)arg2)
67
68 #define MAX_BOARDS 4 /* Don't change this value */
69 #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
70 #define MAX_PORTS 128 /* Don't change this value */
71
72 /*
73 * Define the Moxa PCI vendor and device IDs.
74 */
75 #define MOXA_BUS_TYPE_ISA 0
76 #define MOXA_BUS_TYPE_PCI 1
77
78 #ifndef PCI_VENDOR_ID_MOXA
79 #define PCI_VENDOR_ID_MOXA 0x1393
80 #endif
81 #ifndef PCI_DEVICE_ID_CP204J
82 #define PCI_DEVICE_ID_CP204J 0x2040
83 #endif
84 #ifndef PCI_DEVICE_ID_C218
85 #define PCI_DEVICE_ID_C218 0x2180
86 #endif
87 #ifndef PCI_DEVICE_ID_C320
88 #define PCI_DEVICE_ID_C320 0x3200
89 #endif
90
91 enum {
92 MOXA_BOARD_C218_PCI = 1,
93 MOXA_BOARD_C218_ISA,
94 MOXA_BOARD_C320_PCI,
95 MOXA_BOARD_C320_ISA,
96 MOXA_BOARD_CP204J,
97 };
98
99 static char *moxa_brdname[] =
100 {
101 "C218 Turbo PCI series",
102 "C218 Turbo ISA series",
103 "C320 Turbo PCI series",
104 "C320 Turbo ISA series",
105 "CP-204J series",
106 };
107
108 typedef struct {
109 unsigned short vendor_id;
110 unsigned short device_id;
111 unsigned short board_type;
112 } moxa_pciinfo;
113
114 static moxa_pciinfo moxa_pcibrds[] =
115 {
116 {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C218, MOXA_BOARD_C218_PCI},
117 {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C320, MOXA_BOARD_C320_PCI},
118 {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_CP204J, MOXA_BOARD_CP204J},
119 };
120
121 typedef struct _moxa_isa_board_conf {
122 int boardType;
123 int numPorts;
124 unsigned long baseAddr;
125 } moxa_isa_board_conf;
126
127 static moxa_isa_board_conf moxa_isa_boards[] =
128 {
129 /* {MOXA_BOARD_C218_ISA,8,0xDC000}, */
130 };
131
132 typedef struct _moxa_pci_devinfo {
133 ushort busNum;
134 ushort devNum;
135 } moxa_pci_devinfo;
136
137 typedef struct _moxa_board_conf {
138 int boardType;
139 int numPorts;
140 unsigned long baseAddr;
141 int busType;
142 moxa_pci_devinfo pciInfo;
143 } moxa_board_conf;
144
145 static moxa_board_conf moxa_boards[MAX_BOARDS];
146 static unsigned long moxaBaseAddr[MAX_BOARDS];
147
148 struct moxa_str {
149 int type;
150 int port;
151 int close_delay;
152 unsigned short closing_wait;
153 int count;
154 int blocked_open;
155 long event; /* long req'd for set_bit --RR */
156 int asyncflags;
157 long session;
158 long pgrp;
159 unsigned long statusflags;
160 struct tty_struct *tty;
161 struct termios normal_termios;
162 struct termios callout_termios;
163 wait_queue_head_t open_wait;
164 wait_queue_head_t close_wait;
165 struct tq_struct tqueue;
166 };
167
168 struct mxser_mstatus {
169 tcflag_t cflag;
170 int cts;
171 int dsr;
172 int ri;
173 int dcd;
174 };
175
176 static struct mxser_mstatus GMStatus[MAX_PORTS];
177
178 /* statusflags */
179 #define TXSTOPPED 0x1
180 #define LOWWAIT 0x2
181 #define EMPTYWAIT 0x4
182 #define THROTTLE 0x8
183
184 /* event */
185 #define MOXA_EVENT_HANGUP 1
186
187 #define SERIAL_DO_RESTART
188
189
190 #define SERIAL_TYPE_NORMAL 1
191 #define SERIAL_TYPE_CALLOUT 2
192
193 #define WAKEUP_CHARS 256
194
195 #define PORTNO(x) (MINOR((x)->device) - (x)->driver.minor_start)
196
197 static int verbose = 0;
198 static int ttymajor = MOXAMAJOR;
199 static int calloutmajor = MOXACUMAJOR;
200 #ifdef MODULE
201 /* Variables for insmod */
202 static int baseaddr[] = {0, 0, 0, 0};
203 static int type[] = {0, 0, 0, 0};
204 static int numports[] = {0, 0, 0, 0};
205
206 MODULE_AUTHOR("William Chen");
207 MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
208 MODULE_PARM(type, "1-4i");
209 MODULE_PARM(baseaddr, "1-4i");
210 MODULE_PARM(numports, "1-4i");
211 MODULE_PARM(ttymajor, "i");
212 MODULE_PARM(calloutmajor, "i");
213 MODULE_PARM(verbose, "i");
214
215 #endif //MODULE
216
217 static struct tty_driver moxaDriver;
218 static struct tty_driver moxaCallout;
219 static struct tty_struct *moxaTable[MAX_PORTS + 1];
220 static struct termios *moxaTermios[MAX_PORTS + 1];
221 static struct termios *moxaTermiosLocked[MAX_PORTS + 1];
222 static struct moxa_str moxaChannels[MAX_PORTS];
223 static int moxaRefcount;
224 static unsigned char *moxaXmitBuff;
225 static int moxaTimer_on;
226 static struct timer_list moxaTimer;
227 static int moxaEmptyTimer_on[MAX_PORTS];
228 static struct timer_list moxaEmptyTimer[MAX_PORTS];
229 static struct semaphore moxaBuffSem;
230
231 int moxa_init(void);
232 #ifdef MODULE
233 int init_module(void);
234 void cleanup_module(void);
235 #endif
236 /*
237 * static functions:
238 */
239 static int moxa_get_PCI_conf(struct pci_dev *, int, moxa_board_conf *);
240 static void do_moxa_softint(void *);
241 static int moxa_open(struct tty_struct *, struct file *);
242 static void moxa_close(struct tty_struct *, struct file *);
243 static int moxa_write(struct tty_struct *, int, const unsigned char *, int);
244 static int moxa_write_room(struct tty_struct *);
245 static void moxa_flush_buffer(struct tty_struct *);
246 static int moxa_chars_in_buffer(struct tty_struct *);
247 static void moxa_flush_chars(struct tty_struct *);
248 static void moxa_put_char(struct tty_struct *, unsigned char);
249 static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
250 static void moxa_throttle(struct tty_struct *);
251 static void moxa_unthrottle(struct tty_struct *);
252 static void moxa_set_termios(struct tty_struct *, struct termios *);
253 static void moxa_stop(struct tty_struct *);
254 static void moxa_start(struct tty_struct *);
255 static void moxa_hangup(struct tty_struct *);
256 static void moxa_poll(unsigned long);
257 static void set_tty_param(struct tty_struct *);
258 static int block_till_ready(struct tty_struct *, struct file *,
259 struct moxa_str *);
260 static void setup_empty_event(struct tty_struct *);
261 static void check_xmit_empty(unsigned long);
262 static void shut_down(struct moxa_str *);
263 static void receive_data(struct moxa_str *);
264 /*
265 * moxa board interface functions:
266 */
267 static void MoxaDriverInit(void);
268 static int MoxaDriverIoctl(unsigned int, unsigned long, int);
269 static int MoxaDriverPoll(void);
270 static int MoxaPortsOfCard(int);
271 static int MoxaPortIsValid(int);
272 static void MoxaPortEnable(int);
273 static void MoxaPortDisable(int);
274 static long MoxaPortGetMaxBaud(int);
275 static long MoxaPortSetBaud(int, long);
276 static int MoxaPortSetTermio(int, struct termios *);
277 static int MoxaPortGetLineOut(int, int *, int *);
278 static void MoxaPortLineCtrl(int, int, int);
279 static void MoxaPortFlowCtrl(int, int, int, int, int, int);
280 static int MoxaPortLineStatus(int);
281 static int MoxaPortDCDChange(int);
282 static int MoxaPortDCDON(int);
283 static void MoxaPortFlushData(int, int);
284 static int MoxaPortWriteData(int, unsigned char *, int);
285 static int MoxaPortReadData(int, unsigned char *, int);
286 static int MoxaPortTxQueue(int);
287 static int MoxaPortRxQueue(int);
288 static int MoxaPortTxFree(int);
289 static void MoxaPortTxDisable(int);
290 static void MoxaPortTxEnable(int);
291 static int MoxaPortResetBrkCnt(int);
292 static void MoxaPortSendBreak(int, int);
293 static int moxa_get_serial_info(struct moxa_str *, struct serial_struct *);
294 static int moxa_set_serial_info(struct moxa_str *, struct serial_struct *);
295 static void MoxaSetFifo(int port, int enable);
296
297 #ifdef MODULE
298 int init_module(void)
299 {
300 int ret;
301
302 if (verbose)
303 printk("Loading module moxa ...\n");
304 ret = moxa_init();
305 if (verbose)
306 printk("Done\n");
307 return (ret);
308 }
309
310 void cleanup_module(void)
311 {
312 int i;
313
314 if (verbose)
315 printk("Unloading module moxa ...\n");
316
317 if (moxaTimer_on)
318 del_timer(&moxaTimer);
319
320 for (i = 0; i < MAX_PORTS; i++)
321 if (moxaEmptyTimer_on[i])
322 del_timer(&moxaEmptyTimer[i]);
323
324 if (tty_unregister_driver(&moxaCallout))
325 printk("Couldn't unregister MOXA Intellio family callout driver\n");
326 if (tty_unregister_driver(&moxaDriver))
327 printk("Couldn't unregister MOXA Intellio family serial driver\n");
328 if (verbose)
329 printk("Done\n");
330
331 }
332 #endif
333
334 int moxa_init(void)
335 {
336 int i, n, numBoards;
337 struct moxa_str *ch;
338 int ret1, ret2;
339
340 printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION);
341
342 init_MUTEX(&moxaBuffSem);
343 memset(&moxaDriver, 0, sizeof(struct tty_driver));
344 memset(&moxaCallout, 0, sizeof(struct tty_driver));
345 moxaDriver.magic = TTY_DRIVER_MAGIC;
346 moxaDriver.name = "ttya";
347 moxaDriver.major = ttymajor;
348 moxaDriver.minor_start = 0;
349 moxaDriver.num = MAX_PORTS + 1;
350 moxaDriver.type = TTY_DRIVER_TYPE_SERIAL;
351 moxaDriver.subtype = SERIAL_TYPE_NORMAL;
352 moxaDriver.init_termios = tty_std_termios;
353 moxaDriver.init_termios.c_iflag = 0;
354 moxaDriver.init_termios.c_oflag = 0;
355 moxaDriver.init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
356 moxaDriver.init_termios.c_lflag = 0;
357 moxaDriver.flags = TTY_DRIVER_REAL_RAW;
358 moxaDriver.refcount = &moxaRefcount;
359 moxaDriver.table = moxaTable;
360 moxaDriver.termios = moxaTermios;
361 moxaDriver.termios_locked = moxaTermiosLocked;
362
363 moxaDriver.open = moxa_open;
364 moxaDriver.close = moxa_close;
365 moxaDriver.write = moxa_write;
366 moxaDriver.write_room = moxa_write_room;
367 moxaDriver.flush_buffer = moxa_flush_buffer;
368 moxaDriver.chars_in_buffer = moxa_chars_in_buffer;
369 moxaDriver.flush_chars = moxa_flush_chars;
370 moxaDriver.put_char = moxa_put_char;
371 moxaDriver.ioctl = moxa_ioctl;
372 moxaDriver.throttle = moxa_throttle;
373 moxaDriver.unthrottle = moxa_unthrottle;
374 moxaDriver.set_termios = moxa_set_termios;
375 moxaDriver.stop = moxa_stop;
376 moxaDriver.start = moxa_start;
377 moxaDriver.hangup = moxa_hangup;
378
379 moxaCallout = moxaDriver;
380 moxaCallout.name = "ttyA";
381 moxaCallout.major = calloutmajor;
382 moxaCallout.subtype = SERIAL_TYPE_CALLOUT;
383
384 moxaXmitBuff = 0;
385
386 for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) {
387 ch->type = PORT_16550A;
388 ch->port = i;
389 ch->tqueue.routine = do_moxa_softint;
390 ch->tqueue.data = ch;
391 ch->tty = 0;
392 ch->close_delay = 5 * HZ / 10;
393 ch->closing_wait = 30 * HZ;
394 ch->count = 0;
395 ch->blocked_open = 0;
396 ch->callout_termios = moxaCallout.init_termios;
397 ch->normal_termios = moxaDriver.init_termios;
398 init_waitqueue_head(&ch->open_wait);
399 init_waitqueue_head(&ch->close_wait);
400 }
401
402 for (i = 0; i < MAX_BOARDS; i++) {
403 moxa_boards[i].boardType = 0;
404 moxa_boards[i].numPorts = 0;
405 moxa_boards[i].baseAddr = 0;
406 moxa_boards[i].busType = 0;
407 moxa_boards[i].pciInfo.busNum = 0;
408 moxa_boards[i].pciInfo.devNum = 0;
409 }
410 MoxaDriverInit();
411 printk("Tty devices major number = %d, callout devices major number = %d\n", ttymajor, calloutmajor);
412
413 ret1 = 0;
414 ret2 = 0;
415 if ((ret1 = tty_register_driver(&moxaDriver))) {
416 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
417 } else if ((ret2 = tty_register_driver(&moxaCallout))) {
418 tty_unregister_driver(&moxaDriver);
419 printk(KERN_ERR "Couldn't install MOXA Smartio family callout driver !\n");
420 }
421 if (ret1 || ret2) {
422 return -1;
423 }
424 for (i = 0; i < MAX_PORTS; i++) {
425 init_timer(&moxaEmptyTimer[i]);
426 moxaEmptyTimer[i].function = check_xmit_empty;
427 moxaEmptyTimer[i].data = (unsigned long) & moxaChannels[i];
428 moxaEmptyTimer_on[i] = 0;
429 }
430
431 init_timer(&moxaTimer);
432 moxaTimer.function = moxa_poll;
433 moxaTimer.expires = jiffies + (HZ / 50);
434 moxaTimer_on = 1;
435 add_timer(&moxaTimer);
436
437 /* Find the boards defined in source code */
438 numBoards = 0;
439 for (i = 0; i < MAX_BOARDS; i++) {
440 if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) ||
441 (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) {
442 moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType;
443 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
444 moxa_boards[numBoards].numPorts = 8;
445 else
446 moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts;
447 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
448 moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr;
449 if (verbose)
450 printk("Board %2d: %s board(baseAddr=%lx)\n",
451 numBoards + 1,
452 moxa_brdname[moxa_boards[numBoards].boardType - 1],
453 moxa_boards[numBoards].baseAddr);
454 numBoards++;
455 }
456 }
457 /* Find the boards defined form module args. */
458 #ifdef MODULE
459 for (i = 0; i < MAX_BOARDS; i++) {
460 if ((type[i] == MOXA_BOARD_C218_ISA) ||
461 (type[i] == MOXA_BOARD_C320_ISA)) {
462 if (verbose)
463 printk("Board %2d: %s board(baseAddr=%lx)\n",
464 numBoards + 1,
465 moxa_brdname[type[i] - 1],
466 (unsigned long) baseaddr[i]);
467 if (numBoards >= MAX_BOARDS) {
468 if (verbose)
469 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
470 continue;
471 }
472 moxa_boards[numBoards].boardType = type[i];
473 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
474 moxa_boards[numBoards].numPorts = 8;
475 else
476 moxa_boards[numBoards].numPorts = numports[i];
477 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
478 moxa_boards[numBoards].baseAddr = baseaddr[i];
479 numBoards++;
480 }
481 }
482 #endif
483 /* Find PCI boards here */
484 #ifdef CONFIG_PCI
485 {
486 struct pci_dev *p = NULL;
487 n = sizeof(moxa_pcibrds) / sizeof(moxa_pciinfo);
488 i = 0;
489 while (i < n) {
490 while((p = pci_find_device(moxa_pcibrds[i].vendor_id, moxa_pcibrds[i].device_id, p))!=NULL)
491 {
492 if (pci_enable_device(p))
493 continue;
494 if (numBoards >= MAX_BOARDS) {
495 if (verbose)
496 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
497 } else {
498 moxa_get_PCI_conf(p, moxa_pcibrds[i].board_type,
499 &moxa_boards[numBoards]);
500 numBoards++;
501 }
502 }
503 i++;
504 }
505 }
506 #endif
507 for (i = 0; i < numBoards; i++) {
508 moxaBaseAddr[i] = (unsigned long) ioremap((unsigned long) moxa_boards[i].baseAddr, 0x4000);
509 }
510
511 return (0);
512 }
513
514 static int moxa_get_PCI_conf(struct pci_dev *p, int board_type, moxa_board_conf * board)
515 {
516 board->baseAddr = pci_resource_start (p, 2);
517 board->boardType = board_type;
518 switch (board_type) {
519 case MOXA_BOARD_C218_ISA:
520 case MOXA_BOARD_C218_PCI:
521 board->numPorts = 8;
522 break;
523
524 case MOXA_BOARD_CP204J:
525 board->numPorts = 4;
526 break;
527 default:
528 board->numPorts = 0;
529 break;
530 }
531 board->busType = MOXA_BUS_TYPE_PCI;
532 board->pciInfo.busNum = p->bus->number;
533 board->pciInfo.devNum = p->devfn >> 3;
534
535 return (0);
536 }
537
538 static void do_moxa_softint(void *private_)
539 {
540 struct moxa_str *ch = (struct moxa_str *) private_;
541 struct tty_struct *tty;
542
543 if (!ch || !(tty = ch->tty))
544 return;
545 if (test_and_clear_bit(MOXA_EVENT_HANGUP, &ch->event)) {
546 tty_hangup(tty);
547 wake_up_interruptible(&ch->open_wait);
548 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE);
549 }
550 }
551
552 static int moxa_open(struct tty_struct *tty, struct file *filp)
553 {
554 struct moxa_str *ch;
555 int port;
556 int retval;
557 unsigned long page;
558
559 port = PORTNO(tty);
560 if (port == MAX_PORTS) {
561 MOD_INC_USE_COUNT;
562 return (0);
563 }
564 if (!MoxaPortIsValid(port)) {
565 tty->driver_data = NULL;
566 return (-ENODEV);
567 }
568 down(&moxaBuffSem);
569 if (!moxaXmitBuff) {
570 page = get_free_page(GFP_KERNEL);
571 if (!page) {
572 up(&moxaBuffSem);
573 return (-ENOMEM);
574 }
575 if (moxaXmitBuff)
576 free_page(page);
577 else
578 moxaXmitBuff = (unsigned char *) page;
579 }
580 up(&moxaBuffSem);
581
582 MOD_INC_USE_COUNT;
583 ch = &moxaChannels[port];
584 ch->count++;
585 tty->driver_data = ch;
586 ch->tty = tty;
587 if (ch->count == 1 && (ch->asyncflags & ASYNC_SPLIT_TERMIOS)) {
588 if (tty->driver.subtype == SERIAL_TYPE_NORMAL)
589 *tty->termios = ch->normal_termios;
590 else
591 *tty->termios = ch->callout_termios;
592 }
593 ch->session = current->session;
594 ch->pgrp = current->pgrp;
595 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
596 ch->statusflags = 0;
597 set_tty_param(tty);
598 MoxaPortLineCtrl(ch->port, 1, 1);
599 MoxaPortEnable(ch->port);
600 ch->asyncflags |= ASYNC_INITIALIZED;
601 }
602 retval = block_till_ready(tty, filp, ch);
603
604 moxa_unthrottle(tty);
605
606 if (ch->type == PORT_16550A) {
607 MoxaSetFifo(ch->port, 1);
608 } else {
609 MoxaSetFifo(ch->port, 0);
610 }
611
612 return (retval);
613 }
614
615 static void moxa_close(struct tty_struct *tty, struct file *filp)
616 {
617 struct moxa_str *ch;
618 int port;
619
620 port = PORTNO(tty);
621 if (port == MAX_PORTS) {
622 MOD_DEC_USE_COUNT;
623 return;
624 }
625 if (!MoxaPortIsValid(port)) {
626 #ifdef SERIAL_DEBUG_CLOSE
627 printk("Invalid portno in moxa_close\n");
628 #endif
629 tty->driver_data = NULL;
630 return;
631 }
632 if (tty->driver_data == NULL) {
633 return;
634 }
635 if (tty_hung_up_p(filp)) {
636 MOD_DEC_USE_COUNT;
637 return;
638 }
639 ch = (struct moxa_str *) tty->driver_data;
640
641 if ((tty->count == 1) && (ch->count != 1)) {
642 printk("moxa_close: bad serial port count; tty->count is 1, "
643 "ch->count is %d\n", ch->count);
644 ch->count = 1;
645 }
646 if (--ch->count < 0) {
647 printk("moxa_close: bad serial port count, minor=%d\n",
648 MINOR(tty->device));
649 ch->count = 0;
650 }
651 if (ch->count) {
652 MOD_DEC_USE_COUNT;
653 return;
654 }
655 ch->asyncflags |= ASYNC_CLOSING;
656
657 /*
658 * Save the termios structure, since this port may have
659 * separate termios for callout and dialin.
660 */
661 if (ch->asyncflags & ASYNC_NORMAL_ACTIVE)
662 ch->normal_termios = *tty->termios;
663 if (ch->asyncflags & ASYNC_CALLOUT_ACTIVE)
664 ch->callout_termios = *tty->termios;
665 if (ch->asyncflags & ASYNC_INITIALIZED) {
666 setup_empty_event(tty);
667 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
668 moxaEmptyTimer_on[ch->port] = 0;
669 del_timer(&moxaEmptyTimer[ch->port]);
670 }
671 shut_down(ch);
672 MoxaPortFlushData(port, 2);
673
674 if (tty->driver.flush_buffer)
675 tty->driver.flush_buffer(tty);
676 if (tty->ldisc.flush_buffer)
677 tty->ldisc.flush_buffer(tty);
678 tty->closing = 0;
679 ch->event = 0;
680 ch->tty = 0;
681 if (ch->blocked_open) {
682 if (ch->close_delay) {
683 current->state = TASK_INTERRUPTIBLE;
684 schedule_timeout(ch->close_delay);
685 }
686 wake_up_interruptible(&ch->open_wait);
687 }
688 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE |
689 ASYNC_CLOSING);
690 wake_up_interruptible(&ch->close_wait);
691 MOD_DEC_USE_COUNT;
692 }
693
694 static int moxa_write(struct tty_struct *tty, int from_user,
695 const unsigned char *buf, int count)
696 {
697 struct moxa_str *ch;
698 int len, port;
699 unsigned long flags;
700 unsigned char *temp;
701
702 ch = (struct moxa_str *) tty->driver_data;
703 if (ch == NULL)
704 return (0);
705 port = ch->port;
706 save_flags(flags);
707 cli();
708 if (from_user) {
709 copy_from_user(moxaXmitBuff, buf, count);
710 temp = moxaXmitBuff;
711 } else
712 temp = (unsigned char *) buf;
713 len = MoxaPortWriteData(port, temp, count);
714 restore_flags(flags);
715 /*********************************************
716 if ( !(ch->statusflags & LOWWAIT) &&
717 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
718 ************************************************/
719 ch->statusflags |= LOWWAIT;
720 return (len);
721 }
722
723 static int moxa_write_room(struct tty_struct *tty)
724 {
725 struct moxa_str *ch;
726
727 if (tty->stopped)
728 return (0);
729 ch = (struct moxa_str *) tty->driver_data;
730 if (ch == NULL)
731 return (0);
732 return (MoxaPortTxFree(ch->port));
733 }
734
735 static void moxa_flush_buffer(struct tty_struct *tty)
736 {
737 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
738
739 if (ch == NULL)
740 return;
741 MoxaPortFlushData(ch->port, 1);
742 if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
743 tty->ldisc.write_wakeup)
744 (tty->ldisc.write_wakeup) (tty);
745 wake_up_interruptible(&tty->write_wait);
746 }
747
748 static int moxa_chars_in_buffer(struct tty_struct *tty)
749 {
750 int chars;
751 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
752
753 /*
754 * Sigh...I have to check if driver_data is NULL here, because
755 * if an open() fails, the TTY subsystem eventually calls
756 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
757 * routine. And since the open() failed, we return 0 here. TDJ
758 */
759 if (ch == NULL)
760 return (0);
761 chars = MoxaPortTxQueue(ch->port);
762 if (chars) {
763 /*
764 * Make it possible to wakeup anything waiting for output
765 * in tty_ioctl.c, etc.
766 */
767 if (!(ch->statusflags & EMPTYWAIT))
768 setup_empty_event(tty);
769 }
770 return (chars);
771 }
772
773 static void moxa_flush_chars(struct tty_struct *tty)
774 {
775 /*
776 * Don't think I need this, because this is called to empty the TX
777 * buffer for the 16450, 16550, etc.
778 */
779 }
780
781 static void moxa_put_char(struct tty_struct *tty, unsigned char c)
782 {
783 struct moxa_str *ch;
784 int port;
785 unsigned long flags;
786
787 ch = (struct moxa_str *) tty->driver_data;
788 if (ch == NULL)
789 return;
790 port = ch->port;
791 save_flags(flags);
792 cli();
793 moxaXmitBuff[0] = c;
794 MoxaPortWriteData(port, moxaXmitBuff, 1);
795 restore_flags(flags);
796 /************************************************
797 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
798 *************************************************/
799 ch->statusflags |= LOWWAIT;
800 }
801
802 static int moxa_ioctl(struct tty_struct *tty, struct file *file,
803 unsigned int cmd, unsigned long arg)
804 {
805 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
806 register int port;
807 int retval, dtr, rts;
808 unsigned long flag;
809
810 port = PORTNO(tty);
811 if ((port != MAX_PORTS) && (!ch))
812 return (-EINVAL);
813
814 switch (cmd) {
815 case TCSBRK: /* SVID version: non-zero arg --> no break */
816 retval = tty_check_change(tty);
817 if (retval)
818 return (retval);
819 setup_empty_event(tty);
820 tty_wait_until_sent(tty, 0);
821 if (!arg)
822 MoxaPortSendBreak(ch->port, 0);
823 return (0);
824 case TCSBRKP: /* support for POSIX tcsendbreak() */
825 retval = tty_check_change(tty);
826 if (retval)
827 return (retval);
828 setup_empty_event(tty);
829 tty_wait_until_sent(tty, 0);
830 MoxaPortSendBreak(ch->port, arg);
831 return (0);
832 case TIOCGSOFTCAR:
833 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long *) arg);
834 case TIOCSSOFTCAR:
835 if(get_user(retval, (unsigned long *) arg))
836 return -EFAULT;
837 arg = retval;
838 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
839 (arg ? CLOCAL : 0));
840 if (C_CLOCAL(tty))
841 ch->asyncflags &= ~ASYNC_CHECK_CD;
842 else
843 ch->asyncflags |= ASYNC_CHECK_CD;
844 return (0);
845 case TIOCMGET:
846 flag = 0;
847 MoxaPortGetLineOut(ch->port, &dtr, &rts);
848 if (dtr)
849 flag |= TIOCM_DTR;
850 if (rts)
851 flag |= TIOCM_RTS;
852 dtr = MoxaPortLineStatus(ch->port);
853 if (dtr & 1)
854 flag |= TIOCM_CTS;
855 if (dtr & 2)
856 flag |= TIOCM_DSR;
857 if (dtr & 4)
858 flag |= TIOCM_CD;
859 return put_user(flag, (unsigned int *) arg);
860 case TIOCMBIS:
861 if(get_user(retval, (unsigned int *) arg))
862 return -EFAULT;
863 MoxaPortGetLineOut(ch->port, &dtr, &rts);
864 if (retval & TIOCM_RTS)
865 rts = 1;
866 if (retval & TIOCM_DTR)
867 dtr = 1;
868 MoxaPortLineCtrl(ch->port, dtr, rts);
869 return (0);
870 case TIOCMBIC:
871 if(get_user(retval, (unsigned int *) arg))
872 return -EFAULT;
873 MoxaPortGetLineOut(ch->port, &dtr, &rts);
874 if (retval & TIOCM_RTS)
875 rts = 0;
876 if (retval & TIOCM_DTR)
877 dtr = 0;
878 MoxaPortLineCtrl(ch->port, dtr, rts);
879 return (0);
880 case TIOCMSET:
881 if(get_user(retval, (unsigned long *) arg))
882 return -EFAULT;
883 dtr = rts = 0;
884 if (retval & TIOCM_RTS)
885 rts = 1;
886 if (retval & TIOCM_DTR)
887 dtr = 1;
888 MoxaPortLineCtrl(ch->port, dtr, rts);
889 return (0);
890 case TIOCGSERIAL:
891 return (moxa_get_serial_info(ch, (struct serial_struct *) arg));
892
893 case TIOCSSERIAL:
894 return (moxa_set_serial_info(ch, (struct serial_struct *) arg));
895 default:
896 retval = MoxaDriverIoctl(cmd, arg, port);
897 }
898 return (retval);
899 }
900
901 static void moxa_throttle(struct tty_struct *tty)
902 {
903 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
904
905 ch->statusflags |= THROTTLE;
906 }
907
908 static void moxa_unthrottle(struct tty_struct *tty)
909 {
910 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
911
912 ch->statusflags &= ~THROTTLE;
913 }
914
915 static void moxa_set_termios(struct tty_struct *tty,
916 struct termios *old_termios)
917 {
918 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
919
920 if (ch == NULL)
921 return;
922 set_tty_param(tty);
923 if (!(old_termios->c_cflag & CLOCAL) &&
924 (tty->termios->c_cflag & CLOCAL))
925 wake_up_interruptible(&ch->open_wait);
926 }
927
928 static void moxa_stop(struct tty_struct *tty)
929 {
930 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
931
932 if (ch == NULL)
933 return;
934 MoxaPortTxDisable(ch->port);
935 ch->statusflags |= TXSTOPPED;
936 }
937
938
939 static void moxa_start(struct tty_struct *tty)
940 {
941 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
942
943 if (ch == NULL)
944 return;
945
946 if (!(ch->statusflags & TXSTOPPED))
947 return;
948
949 MoxaPortTxEnable(ch->port);
950 ch->statusflags &= ~TXSTOPPED;
951 }
952
953 static void moxa_hangup(struct tty_struct *tty)
954 {
955 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
956
957 moxa_flush_buffer(tty);
958 shut_down(ch);
959 ch->event = 0;
960 ch->count = 0;
961 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE);
962 ch->tty = 0;
963 wake_up_interruptible(&ch->open_wait);
964 }
965
966 static void moxa_poll(unsigned long ignored)
967 {
968 register int card;
969 struct moxa_str *ch;
970 struct tty_struct *tp;
971 int i, ports;
972
973 moxaTimer_on = 0;
974 del_timer(&moxaTimer);
975
976 if (MoxaDriverPoll() < 0) {
977 moxaTimer.function = moxa_poll;
978 moxaTimer.expires = jiffies + (HZ / 50);
979 moxaTimer_on = 1;
980 add_timer(&moxaTimer);
981 return;
982 }
983 for (card = 0; card < MAX_BOARDS; card++) {
984 if ((ports = MoxaPortsOfCard(card)) <= 0)
985 continue;
986 ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
987 for (i = 0; i < ports; i++, ch++) {
988 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
989 continue;
990 if (!(ch->statusflags & THROTTLE) &&
991 (MoxaPortRxQueue(ch->port) > 0))
992 receive_data(ch);
993 if ((tp = ch->tty) == 0)
994 continue;
995 if (ch->statusflags & LOWWAIT) {
996 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
997 if (!tp->stopped) {
998 ch->statusflags &= ~LOWWAIT;
999 if ((tp->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
1000 tp->ldisc.write_wakeup)
1001 (tp->ldisc.write_wakeup) (tp);
1002 wake_up_interruptible(&tp->write_wait);
1003 }
1004 }
1005 }
1006 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
1007 tty_insert_flip_char(tp, 0, TTY_BREAK);
1008 tty_schedule_flip(tp);
1009 }
1010 if (MoxaPortDCDChange(ch->port)) {
1011 if (ch->asyncflags & ASYNC_CHECK_CD) {
1012 if (MoxaPortDCDON(ch->port))
1013 wake_up_interruptible(&ch->open_wait);
1014 else {
1015 set_bit(MOXA_EVENT_HANGUP, &ch->event);
1016 queue_task(&ch->tqueue, &tq_scheduler);
1017 }
1018 }
1019 }
1020 }
1021 }
1022
1023 moxaTimer.function = moxa_poll;
1024 moxaTimer.expires = jiffies + (HZ / 50);
1025 moxaTimer_on = 1;
1026 add_timer(&moxaTimer);
1027 }
1028
1029 /******************************************************************************/
1030
1031 static void set_tty_param(struct tty_struct *tty)
1032 {
1033 register struct termios *ts;
1034 struct moxa_str *ch;
1035 int rts, cts, txflow, rxflow, xany;
1036
1037 ch = (struct moxa_str *) tty->driver_data;
1038 ts = tty->termios;
1039 if (ts->c_cflag & CLOCAL)
1040 ch->asyncflags &= ~ASYNC_CHECK_CD;
1041 else
1042 ch->asyncflags |= ASYNC_CHECK_CD;
1043 rts = cts = txflow = rxflow = xany = 0;
1044 if (ts->c_cflag & CRTSCTS)
1045 rts = cts = 1;
1046 if (ts->c_iflag & IXON)
1047 txflow = 1;
1048 if (ts->c_iflag & IXOFF)
1049 rxflow = 1;
1050 if (ts->c_iflag & IXANY)
1051 xany = 1;
1052 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
1053 MoxaPortSetTermio(ch->port, ts);
1054 }
1055
1056 static int block_till_ready(struct tty_struct *tty, struct file *filp,
1057 struct moxa_str *ch)
1058 {
1059 DECLARE_WAITQUEUE(wait,current);
1060 unsigned long flags;
1061 int retval;
1062 int do_clocal = C_CLOCAL(tty);
1063
1064 /*
1065 * If the device is in the middle of being closed, then block
1066 * until it's done, and then try again.
1067 */
1068 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
1069 if (ch->asyncflags & ASYNC_CLOSING)
1070 interruptible_sleep_on(&ch->close_wait);
1071 #ifdef SERIAL_DO_RESTART
1072 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1073 return (-EAGAIN);
1074 else
1075 return (-ERESTARTSYS);
1076 #else
1077 return (-EAGAIN);
1078 #endif
1079 }
1080 /*
1081 * If this is a callout device, then just make sure the normal
1082 * device isn't being used.
1083 */
1084 if (tty->driver.subtype == SERIAL_TYPE_CALLOUT) {
1085 if (ch->asyncflags & ASYNC_NORMAL_ACTIVE)
1086 return (-EBUSY);
1087 if ((ch->asyncflags & ASYNC_CALLOUT_ACTIVE) &&
1088 (ch->asyncflags & ASYNC_SESSION_LOCKOUT) &&
1089 (ch->session != current->session))
1090 return (-EBUSY);
1091 if ((ch->asyncflags & ASYNC_CALLOUT_ACTIVE) &&
1092 (ch->asyncflags & ASYNC_PGRP_LOCKOUT) &&
1093 (ch->pgrp != current->pgrp))
1094 return (-EBUSY);
1095 ch->asyncflags |= ASYNC_CALLOUT_ACTIVE;
1096 return (0);
1097 }
1098 /*
1099 * If non-blocking mode is set, then make the check up front
1100 * and then exit.
1101 */
1102 if (filp->f_flags & O_NONBLOCK) {
1103 if (ch->asyncflags & ASYNC_CALLOUT_ACTIVE)
1104 return (-EBUSY);
1105 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1106 return (0);
1107 }
1108 /*
1109 * Block waiting for the carrier detect and the line to become free
1110 */
1111 retval = 0;
1112 add_wait_queue(&ch->open_wait, &wait);
1113 #ifdef SERIAL_DEBUG_OPEN
1114 printk("block_til_ready before block: ttys%d, count = %d\n",
1115 ch->line, ch->count);
1116 #endif
1117 save_flags(flags);
1118 cli();
1119 if (!tty_hung_up_p(filp))
1120 ch->count--;
1121 restore_flags(flags);
1122 ch->blocked_open++;
1123 while (1) {
1124 current->state = TASK_INTERRUPTIBLE;
1125 if (tty_hung_up_p(filp) ||
1126 !(ch->asyncflags & ASYNC_INITIALIZED)) {
1127 #ifdef SERIAL_DO_RESTART
1128 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1129 retval = -EAGAIN;
1130 else
1131 retval = -ERESTARTSYS;
1132 #else
1133 retval = -EAGAIN;
1134 #endif
1135 break;
1136 }
1137 if (!(ch->asyncflags & ASYNC_CALLOUT_ACTIVE) &&
1138 !(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
1139 MoxaPortDCDON(ch->port)))
1140 break;
1141
1142 if (signal_pending(current)) {
1143 retval = -ERESTARTSYS;
1144 break;
1145 }
1146 schedule();
1147 }
1148 current->state = TASK_RUNNING;
1149 remove_wait_queue(&ch->open_wait, &wait);
1150 if (!tty_hung_up_p(filp))
1151 ch->count++;
1152 ch->blocked_open--;
1153 #ifdef SERIAL_DEBUG_OPEN
1154 printk("block_til_ready after blocking: ttys%d, count = %d\n",
1155 ch->line, ch->count);
1156 #endif
1157 if (retval)
1158 return (retval);
1159 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1160 return (0);
1161 }
1162
1163 static void setup_empty_event(struct tty_struct *tty)
1164 {
1165 struct moxa_str *ch = tty->driver_data;
1166 unsigned long flags;
1167
1168 save_flags(flags);
1169 cli();
1170 ch->statusflags |= EMPTYWAIT;
1171 moxaEmptyTimer_on[ch->port] = 0;
1172 del_timer(&moxaEmptyTimer[ch->port]);
1173 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1174 moxaEmptyTimer_on[ch->port] = 1;
1175 add_timer(&moxaEmptyTimer[ch->port]);
1176 restore_flags(flags);
1177 }
1178
1179 static void check_xmit_empty(unsigned long data)
1180 {
1181 struct moxa_str *ch;
1182
1183 ch = (struct moxa_str *) data;
1184 moxaEmptyTimer_on[ch->port] = 0;
1185 del_timer(&moxaEmptyTimer[ch->port]);
1186 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1187 if (MoxaPortTxQueue(ch->port) == 0) {
1188 ch->statusflags &= ~EMPTYWAIT;
1189 if ((ch->tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
1190 ch->tty->ldisc.write_wakeup)
1191 (ch->tty->ldisc.write_wakeup) (ch->tty);
1192 wake_up_interruptible(&ch->tty->write_wait);
1193 return;
1194 }
1195 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1196 moxaEmptyTimer_on[ch->port] = 1;
1197 add_timer(&moxaEmptyTimer[ch->port]);
1198 } else
1199 ch->statusflags &= ~EMPTYWAIT;
1200 }
1201
1202 static void shut_down(struct moxa_str *ch)
1203 {
1204 struct tty_struct *tp;
1205
1206 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1207 return;
1208
1209 tp = ch->tty;
1210
1211 MoxaPortDisable(ch->port);
1212
1213 /*
1214 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1215 */
1216 if (tp->termios->c_cflag & HUPCL)
1217 MoxaPortLineCtrl(ch->port, 0, 0);
1218
1219 ch->asyncflags &= ~ASYNC_INITIALIZED;
1220 }
1221
1222 static void receive_data(struct moxa_str *ch)
1223 {
1224 struct tty_struct *tp;
1225 struct termios *ts;
1226 int i, count, rc, space;
1227 unsigned char *charptr, *flagptr;
1228 unsigned long flags;
1229
1230 ts = 0;
1231 tp = ch->tty;
1232 if (tp)
1233 ts = tp->termios;
1234 /**************************************************
1235 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1236 *****************************************************/
1237 if (!tp || !ts) {
1238 MoxaPortFlushData(ch->port, 0);
1239 return;
1240 }
1241 space = TTY_FLIPBUF_SIZE - tp->flip.count;
1242 if (space <= 0)
1243 return;
1244 charptr = tp->flip.char_buf_ptr;
1245 flagptr = tp->flip.flag_buf_ptr;
1246 rc = tp->flip.count;
1247 save_flags(flags);
1248 cli();
1249 count = MoxaPortReadData(ch->port, charptr, space);
1250 restore_flags(flags);
1251 for (i = 0; i < count; i++)
1252 *flagptr++ = 0;
1253 charptr += count;
1254 rc += count;
1255 tp->flip.count = rc;
1256 tp->flip.char_buf_ptr = charptr;
1257 tp->flip.flag_buf_ptr = flagptr;
1258 tty_schedule_flip(ch->tty);
1259 }
1260
1261 #define Magic_code 0x404
1262
1263 /*
1264 * System Configuration
1265 */
1266 /*
1267 * for C218 BIOS initialization
1268 */
1269 #define C218_ConfBase 0x800
1270 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1271 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1272 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1273 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1274 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1275 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1276 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1277 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1278 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1279 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1280
1281 #define C218_LoadBuf 0x0F00
1282 #define C218_KeyCode 0x218
1283 #define CP204J_KeyCode 0x204
1284
1285 /*
1286 * for C320 BIOS initialization
1287 */
1288 #define C320_ConfBase 0x800
1289 #define C320_LoadBuf 0x0f00
1290 #define STS_init 0x05 /* for C320_status */
1291
1292 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1293 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1294 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1295 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1296 #define C320check_sum C320_ConfBase + 8 /* WORD */
1297 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1298 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1299 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1300
1301 #define C320_KeyCode 0x320
1302
1303 #define FixPage_addr 0x0000 /* starting addr of static page */
1304 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1305 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1306 #define Control_reg 0x1ff0 /* select page and reset control */
1307 #define HW_reset 0x80
1308
1309 /*
1310 * Function Codes
1311 */
1312 #define FC_CardReset 0x80
1313 #define FC_ChannelReset 1 /* C320 firmware not supported */
1314 #define FC_EnableCH 2
1315 #define FC_DisableCH 3
1316 #define FC_SetParam 4
1317 #define FC_SetMode 5
1318 #define FC_SetRate 6
1319 #define FC_LineControl 7
1320 #define FC_LineStatus 8
1321 #define FC_XmitControl 9
1322 #define FC_FlushQueue 10
1323 #define FC_SendBreak 11
1324 #define FC_StopBreak 12
1325 #define FC_LoopbackON 13
1326 #define FC_LoopbackOFF 14
1327 #define FC_ClrIrqTable 15
1328 #define FC_SendXon 16
1329 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1330 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1331 #define FC_SetBreakIrq 19
1332 #define FC_SetLineIrq 20
1333 #define FC_SetFlowCtl 21
1334 #define FC_GenIrq 22
1335 #define FC_InCD180 23
1336 #define FC_OutCD180 24
1337 #define FC_InUARTreg 23
1338 #define FC_OutUARTreg 24
1339 #define FC_SetXonXoff 25
1340 #define FC_OutCD180CCR 26
1341 #define FC_ExtIQueue 27
1342 #define FC_ExtOQueue 28
1343 #define FC_ClrLineIrq 29
1344 #define FC_HWFlowCtl 30
1345 #define FC_GetClockRate 35
1346 #define FC_SetBaud 36
1347 #define FC_SetDataMode 41
1348 #define FC_GetCCSR 43
1349 #define FC_GetDataError 45
1350 #define FC_RxControl 50
1351 #define FC_ImmSend 51
1352 #define FC_SetXonState 52
1353 #define FC_SetXoffState 53
1354 #define FC_SetRxFIFOTrig 54
1355 #define FC_SetTxFIFOCnt 55
1356 #define FC_UnixRate 56
1357 #define FC_UnixResetTimer 57
1358
1359 #define RxFIFOTrig1 0
1360 #define RxFIFOTrig4 1
1361 #define RxFIFOTrig8 2
1362 #define RxFIFOTrig14 3
1363
1364 /*
1365 * Dual-Ported RAM
1366 */
1367 #define DRAM_global 0
1368 #define INT_data (DRAM_global + 0)
1369 #define Config_base (DRAM_global + 0x108)
1370
1371 #define IRQindex (INT_data + 0)
1372 #define IRQpending (INT_data + 4)
1373 #define IRQtable (INT_data + 8)
1374
1375 /*
1376 * Interrupt Status
1377 */
1378 #define IntrRx 0x01 /* receiver data O.K. */
1379 #define IntrTx 0x02 /* transmit buffer empty */
1380 #define IntrFunc 0x04 /* function complete */
1381 #define IntrBreak 0x08 /* received break */
1382 #define IntrLine 0x10 /* line status change
1383 for transmitter */
1384 #define IntrIntr 0x20 /* received INTR code */
1385 #define IntrQuit 0x40 /* received QUIT code */
1386 #define IntrEOF 0x80 /* received EOF code */
1387
1388 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1389 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1390
1391 #define Magic_no (Config_base + 0)
1392 #define Card_model_no (Config_base + 2)
1393 #define Total_ports (Config_base + 4)
1394 #define Module_cnt (Config_base + 8)
1395 #define Module_no (Config_base + 10)
1396 #define Timer_10ms (Config_base + 14)
1397 #define Disable_IRQ (Config_base + 20)
1398 #define TMS320_PORT1 (Config_base + 22)
1399 #define TMS320_PORT2 (Config_base + 24)
1400 #define TMS320_CLOCK (Config_base + 26)
1401
1402 /*
1403 * DATA BUFFER in DRAM
1404 */
1405 #define Extern_table 0x400 /* Base address of the external table
1406 (24 words * 64) total 3K bytes
1407 (24 words * 128) total 6K bytes */
1408 #define Extern_size 0x60 /* 96 bytes */
1409 #define RXrptr 0x00 /* read pointer for RX buffer */
1410 #define RXwptr 0x02 /* write pointer for RX buffer */
1411 #define TXrptr 0x04 /* read pointer for TX buffer */
1412 #define TXwptr 0x06 /* write pointer for TX buffer */
1413 #define HostStat 0x08 /* IRQ flag and general flag */
1414 #define FlagStat 0x0A
1415 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1416 /* x x x x | | | | */
1417 /* | | | + CTS flow */
1418 /* | | +--- RTS flow */
1419 /* | +------ TX Xon/Xoff */
1420 /* +--------- RX Xon/Xoff */
1421 #define Break_cnt 0x0E /* received break count */
1422 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1423 #define RX_mask 0x12
1424 #define TX_mask 0x14
1425 #define Ofs_rxb 0x16
1426 #define Ofs_txb 0x18
1427 #define Page_rxb 0x1A
1428 #define Page_txb 0x1C
1429 #define EndPage_rxb 0x1E
1430 #define EndPage_txb 0x20
1431 #define Data_error 0x22
1432 #define RxTrigger 0x28
1433 #define TxTrigger 0x2a
1434
1435 #define rRXwptr 0x34
1436 #define Low_water 0x36
1437
1438 #define FuncCode 0x40
1439 #define FuncArg 0x42
1440 #define FuncArg1 0x44
1441
1442 #define C218rx_size 0x2000 /* 8K bytes */
1443 #define C218tx_size 0x8000 /* 32K bytes */
1444
1445 #define C218rx_mask (C218rx_size - 1)
1446 #define C218tx_mask (C218tx_size - 1)
1447
1448 #define C320p8rx_size 0x2000
1449 #define C320p8tx_size 0x8000
1450 #define C320p8rx_mask (C320p8rx_size - 1)
1451 #define C320p8tx_mask (C320p8tx_size - 1)
1452
1453 #define C320p16rx_size 0x2000
1454 #define C320p16tx_size 0x4000
1455 #define C320p16rx_mask (C320p16rx_size - 1)
1456 #define C320p16tx_mask (C320p16tx_size - 1)
1457
1458 #define C320p24rx_size 0x2000
1459 #define C320p24tx_size 0x2000
1460 #define C320p24rx_mask (C320p24rx_size - 1)
1461 #define C320p24tx_mask (C320p24tx_size - 1)
1462
1463 #define C320p32rx_size 0x1000
1464 #define C320p32tx_size 0x1000
1465 #define C320p32rx_mask (C320p32rx_size - 1)
1466 #define C320p32tx_mask (C320p32tx_size - 1)
1467
1468 #define Page_size 0x2000
1469 #define Page_mask (Page_size - 1)
1470 #define C218rx_spage 3
1471 #define C218tx_spage 4
1472 #define C218rx_pageno 1
1473 #define C218tx_pageno 4
1474 #define C218buf_pageno 5
1475
1476 #define C320p8rx_spage 3
1477 #define C320p8tx_spage 4
1478 #define C320p8rx_pgno 1
1479 #define C320p8tx_pgno 4
1480 #define C320p8buf_pgno 5
1481
1482 #define C320p16rx_spage 3
1483 #define C320p16tx_spage 4
1484 #define C320p16rx_pgno 1
1485 #define C320p16tx_pgno 2
1486 #define C320p16buf_pgno 3
1487
1488 #define C320p24rx_spage 3
1489 #define C320p24tx_spage 4
1490 #define C320p24rx_pgno 1
1491 #define C320p24tx_pgno 1
1492 #define C320p24buf_pgno 2
1493
1494 #define C320p32rx_spage 3
1495 #define C320p32tx_ofs C320p32rx_size
1496 #define C320p32tx_spage 3
1497 #define C320p32buf_pgno 1
1498
1499 /*
1500 * Host Status
1501 */
1502 #define WakeupRx 0x01
1503 #define WakeupTx 0x02
1504 #define WakeupBreak 0x08
1505 #define WakeupLine 0x10
1506 #define WakeupIntr 0x20
1507 #define WakeupQuit 0x40
1508 #define WakeupEOF 0x80 /* used in VTIME control */
1509 #define WakeupRxTrigger 0x100
1510 #define WakeupTxTrigger 0x200
1511 /*
1512 * Flag status
1513 */
1514 #define Rx_over 0x01
1515 #define Xoff_state 0x02
1516 #define Tx_flowOff 0x04
1517 #define Tx_enable 0x08
1518 #define CTS_state 0x10
1519 #define DSR_state 0x20
1520 #define DCD_state 0x80
1521 /*
1522 * FlowControl
1523 */
1524 #define CTS_FlowCtl 1
1525 #define RTS_FlowCtl 2
1526 #define Tx_FlowCtl 4
1527 #define Rx_FlowCtl 8
1528 #define IXM_IXANY 0x10
1529
1530 #define LowWater 128
1531
1532 #define DTR_ON 1
1533 #define RTS_ON 2
1534 #define CTS_ON 1
1535 #define DSR_ON 2
1536 #define DCD_ON 8
1537
1538 /* mode definition */
1539 #define MX_CS8 0x03
1540 #define MX_CS7 0x02
1541 #define MX_CS6 0x01
1542 #define MX_CS5 0x00
1543
1544 #define MX_STOP1 0x00
1545 #define MX_STOP15 0x04
1546 #define MX_STOP2 0x08
1547
1548 #define MX_PARNONE 0x00
1549 #define MX_PAREVEN 0x40
1550 #define MX_PARODD 0xC0
1551
1552 /*
1553 * Query
1554 */
1555 #define QueryPort MAX_PORTS
1556
1557
1558
1559 struct mon_str {
1560 int tick;
1561 int rxcnt[MAX_PORTS];
1562 int txcnt[MAX_PORTS];
1563 };
1564 typedef struct mon_str mon_st;
1565
1566 #define DCD_changed 0x01
1567 #define DCD_oldstate 0x80
1568
1569 static unsigned char moxaBuff[10240];
1570 static unsigned long moxaIntNdx[MAX_BOARDS];
1571 static unsigned long moxaIntPend[MAX_BOARDS];
1572 static unsigned long moxaIntTable[MAX_BOARDS];
1573 static char moxaChkPort[MAX_PORTS];
1574 static char moxaLineCtrl[MAX_PORTS];
1575 static unsigned long moxaTableAddr[MAX_PORTS];
1576 static long moxaCurBaud[MAX_PORTS];
1577 static char moxaDCDState[MAX_PORTS];
1578 static char moxaLowChkFlag[MAX_PORTS];
1579 static int moxaLowWaterChk;
1580 static int moxaCard;
1581 static mon_st moxaLog;
1582 static int moxaFuncTout;
1583 static ushort moxaBreakCnt[MAX_PORTS];
1584
1585 static void moxadelay(int);
1586 static void moxafunc(unsigned long, int, ushort);
1587 static void wait_finish(unsigned long);
1588 static void low_water_check(unsigned long);
1589 static int moxaloadbios(int, unsigned char *, int);
1590 static int moxafindcard(int);
1591 static int moxaload320b(int, unsigned char *, int);
1592 static int moxaloadcode(int, unsigned char *, int);
1593 static int moxaloadc218(int, unsigned long, int);
1594 static int moxaloadc320(int, unsigned long, int, int *);
1595
1596 /*****************************************************************************
1597 * Driver level functions: *
1598 * 1. MoxaDriverInit(void); *
1599 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1600 * 3. MoxaDriverPoll(void); *
1601 *****************************************************************************/
1602 void MoxaDriverInit(void)
1603 {
1604 int i;
1605
1606 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1607 moxaCard = 0;
1608 moxaLog.tick = 0;
1609 moxaLowWaterChk = 0;
1610 for (i = 0; i < MAX_PORTS; i++) {
1611 moxaChkPort[i] = 0;
1612 moxaLowChkFlag[i] = 0;
1613 moxaLineCtrl[i] = 0;
1614 moxaLog.rxcnt[i] = 0;
1615 moxaLog.txcnt[i] = 0;
1616 }
1617 }
1618
1619 #define MOXA 0x400
1620 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1621 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1622 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1623 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1624 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1625 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1626 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1627 #define MOXA_GETDATACOUNT (MOXA + 23)
1628 #define MOXA_GET_IOQUEUE (MOXA + 27)
1629 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1630 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1631 #define MOXA_GET_MAJOR (MOXA + 63)
1632 #define MOXA_GET_CUMAJOR (MOXA + 64)
1633 #define MOXA_GETMSTATUS (MOXA + 65)
1634
1635
1636 struct moxaq_str {
1637 int inq;
1638 int outq;
1639 };
1640
1641 struct dl_str {
1642 char *buf;
1643 int len;
1644 int cardno;
1645 };
1646
1647 static struct moxaq_str temp_queue[MAX_PORTS];
1648 static struct dl_str dltmp;
1649
1650 void MoxaPortFlushData(int port, int mode)
1651 {
1652 unsigned long ofsAddr;
1653 if ((mode < 0) || (mode > 2))
1654 return;
1655 ofsAddr = moxaTableAddr[port];
1656 moxafunc(ofsAddr, FC_FlushQueue, mode);
1657 if (mode != 1) {
1658 moxaLowChkFlag[port] = 0;
1659 low_water_check(ofsAddr);
1660 }
1661 }
1662
1663 int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1664 {
1665 int i;
1666 int status;
1667 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1668
1669 if (port == QueryPort) {
1670 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1671 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1672 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1673 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1674 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1675 return (-EINVAL);
1676 }
1677 switch (cmd) {
1678 case MOXA_GET_CONF:
1679 if(copy_to_user((void *)arg, &moxa_boards, MAX_BOARDS * sizeof(moxa_board_conf)))
1680 return -EFAULT;
1681 return (0);
1682 case MOXA_INIT_DRIVER:
1683 if ((int) arg == 0x404)
1684 MoxaDriverInit();
1685 return (0);
1686 case MOXA_GETDATACOUNT:
1687 moxaLog.tick = jiffies;
1688 if(copy_to_user((void *)arg, &moxaLog, sizeof(mon_st)))
1689 return -EFAULT;
1690 return (0);
1691 case MOXA_FLUSH_QUEUE:
1692 MoxaPortFlushData(port, arg);
1693 return (0);
1694 case MOXA_GET_IOQUEUE:
1695 for (i = 0; i < MAX_PORTS; i++) {
1696 if (moxaChkPort[i]) {
1697 temp_queue[i].inq = MoxaPortRxQueue(i);
1698 temp_queue[i].outq = MoxaPortTxQueue(i);
1699 }
1700 }
1701 if(copy_to_user((void *)arg, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
1702 return -EFAULT;
1703 return (0);
1704 case MOXA_LOAD_BIOS:
1705 if(copy_from_user(&dltmp, (void *)arg, sizeof(struct dl_str)))
1706 return -EFAULT;
1707 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1708 return (i);
1709 case MOXA_FIND_BOARD:
1710 if(copy_from_user(&dltmp, (void *)arg, sizeof(struct dl_str)))
1711 return -EFAULT;
1712 return moxafindcard(dltmp.cardno);
1713 case MOXA_LOAD_C320B:
1714 if(copy_from_user(&dltmp, (void *)arg, sizeof(struct dl_str)))
1715 return -EFAULT;
1716 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1717 return (0);
1718 case MOXA_LOAD_CODE:
1719 if(copy_from_user(&dltmp, (void *)arg, sizeof(struct dl_str)))
1720 return -EFAULT;
1721 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1722 if (i == -1)
1723 return (-EFAULT);
1724 return (i);
1725 case MOXA_GET_OQUEUE:
1726 i = MoxaPortTxQueue(port);
1727 return put_user(i, (unsigned long *) arg);
1728 case MOXA_GET_IQUEUE:
1729 i = MoxaPortRxQueue(port);
1730 return put_user(i, (unsigned long *) arg);
1731 case MOXA_GET_MAJOR:
1732 if(copy_to_user((void *)arg, &ttymajor, sizeof(int)))
1733 return -EFAULT;
1734 return 0;
1735 case MOXA_GET_CUMAJOR:
1736 if(copy_to_user((void *)arg, &calloutmajor, sizeof(int)))
1737 return -EFAULT;
1738 return 0;
1739 case MOXA_GETMSTATUS:
1740 for (i = 0; i < MAX_PORTS; i++) {
1741 GMStatus[i].ri = 0;
1742 GMStatus[i].dcd = 0;
1743 GMStatus[i].dsr = 0;
1744 GMStatus[i].cts = 0;
1745 if (!moxaChkPort[i]) {
1746 continue;
1747 } else {
1748 status = MoxaPortLineStatus(moxaChannels[i].port);
1749 if (status & 1)
1750 GMStatus[i].cts = 1;
1751 if (status & 2)
1752 GMStatus[i].dsr = 1;
1753 if (status & 4)
1754 GMStatus[i].dcd = 1;
1755 }
1756
1757 if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
1758 GMStatus[i].cflag = moxaChannels[i].normal_termios.c_cflag;
1759 else
1760 GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
1761 }
1762 if(copy_to_user((void *)arg, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
1763 return -EFAULT;
1764 return 0;
1765
1766 }
1767 return (-ENOIOCTLCMD);
1768 }
1769
1770 int MoxaDriverPoll(void)
1771 {
1772 register ushort temp;
1773 register int card;
1774 unsigned long ip, ofsAddr;
1775 int port, p, ports;
1776
1777 if (moxaCard == 0)
1778 return (-1);
1779 for (card = 0; card < MAX_BOARDS; card++) {
1780 if ((ports = moxa_boards[card].numPorts) == 0)
1781 continue;
1782 if (readb(moxaIntPend[card]) == 0xff) {
1783 ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
1784 p = card * MAX_PORTS_PER_BOARD;
1785 ports <<= 1;
1786 for (port = 0; port < ports; port += 2, p++) {
1787 if ((temp = readw(ip + port)) != 0) {
1788 writew(0, ip + port);
1789 ofsAddr = moxaTableAddr[p];
1790 if (temp & IntrTx)
1791 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1792 if (temp & IntrBreak) {
1793 moxaBreakCnt[p]++;
1794 }
1795 if (temp & IntrLine) {
1796 if (readb(ofsAddr + FlagStat) & DCD_state) {
1797 if ((moxaDCDState[p] & DCD_oldstate) == 0)
1798 moxaDCDState[p] = (DCD_oldstate |
1799 DCD_changed);
1800 } else {
1801 if (moxaDCDState[p] & DCD_oldstate)
1802 moxaDCDState[p] = DCD_changed;
1803 }
1804 }
1805 }
1806 }
1807 writeb(0, moxaIntPend[card]);
1808 }
1809 if (moxaLowWaterChk) {
1810 p = card * MAX_PORTS_PER_BOARD;
1811 for (port = 0; port < ports; port++, p++) {
1812 if (moxaLowChkFlag[p]) {
1813 moxaLowChkFlag[p] = 0;
1814 ofsAddr = moxaTableAddr[p];
1815 low_water_check(ofsAddr);
1816 }
1817 }
1818 }
1819 }
1820 moxaLowWaterChk = 0;
1821 return (0);
1822 }
1823
1824 /*****************************************************************************
1825 * Card level function: *
1826 * 1. MoxaPortsOfCard(int cardno); *
1827 *****************************************************************************/
1828 int MoxaPortsOfCard(int cardno)
1829 {
1830
1831 if (moxa_boards[cardno].boardType == 0)
1832 return (0);
1833 return (moxa_boards[cardno].numPorts);
1834 }
1835
1836 /*****************************************************************************
1837 * Port level functions: *
1838 * 1. MoxaPortIsValid(int port); *
1839 * 2. MoxaPortEnable(int port); *
1840 * 3. MoxaPortDisable(int port); *
1841 * 4. MoxaPortGetMaxBaud(int port); *
1842 * 5. MoxaPortGetCurBaud(int port); *
1843 * 6. MoxaPortSetBaud(int port, long baud); *
1844 * 7. MoxaPortSetMode(int port, int databit, int stopbit, int parity); *
1845 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1846 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1847 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1848 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1849 * 12. MoxaPortLineStatus(int port); *
1850 * 13. MoxaPortDCDChange(int port); *
1851 * 14. MoxaPortDCDON(int port); *
1852 * 15. MoxaPortFlushData(int port, int mode); *
1853 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1854 * 17. MoxaPortReadData(int port, unsigned char * buffer, int length); *
1855 * 18. MoxaPortTxBufSize(int port); *
1856 * 19. MoxaPortRxBufSize(int port); *
1857 * 20. MoxaPortTxQueue(int port); *
1858 * 21. MoxaPortTxFree(int port); *
1859 * 22. MoxaPortRxQueue(int port); *
1860 * 23. MoxaPortRxFree(int port); *
1861 * 24. MoxaPortTxDisable(int port); *
1862 * 25. MoxaPortTxEnable(int port); *
1863 * 26. MoxaPortGetBrkCnt(int port); *
1864 * 27. MoxaPortResetBrkCnt(int port); *
1865 * 28. MoxaPortSetXonXoff(int port, int xonValue, int xoffValue); *
1866 * 29. MoxaPortIsTxHold(int port); *
1867 * 30. MoxaPortSendBreak(int port, int ticks); *
1868 *****************************************************************************/
1869 /*
1870 * Moxa Port Number Description:
1871 *
1872 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1873 * the port number using in MOXA driver functions will be 0 to 31 for
1874 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1875 * to 127 for fourth. For example, if you setup three MOXA boards,
1876 * first board is C218, second board is C320-16 and third board is
1877 * C320-32. The port number of first board (C218 - 8 ports) is from
1878 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1879 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1880 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1881 * 127 will be invalid.
1882 *
1883 *
1884 * Moxa Functions Description:
1885 *
1886 * Function 1: Driver initialization routine, this routine must be
1887 * called when initialized driver.
1888 * Syntax:
1889 * void MoxaDriverInit();
1890 *
1891 *
1892 * Function 2: Moxa driver private IOCTL command processing.
1893 * Syntax:
1894 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1895 *
1896 * unsigned int cmd : IOCTL command
1897 * unsigned long arg : IOCTL argument
1898 * int port : port number (0 - 127)
1899 *
1900 * return: 0 (OK)
1901 * -EINVAL
1902 * -ENOIOCTLCMD
1903 *
1904 *
1905 * Function 3: Moxa driver polling process routine.
1906 * Syntax:
1907 * int MoxaDriverPoll(void);
1908 *
1909 * return: 0 ; polling O.K.
1910 * -1 : no any Moxa card.
1911 *
1912 *
1913 * Function 4: Get the ports of this card.
1914 * Syntax:
1915 * int MoxaPortsOfCard(int cardno);
1916 *
1917 * int cardno : card number (0 - 3)
1918 *
1919 * return: 0 : this card is invalid
1920 * 8/16/24/32
1921 *
1922 *
1923 * Function 5: Check this port is valid or invalid
1924 * Syntax:
1925 * int MoxaPortIsValid(int port);
1926 * int port : port number (0 - 127, ref port description)
1927 *
1928 * return: 0 : this port is invalid
1929 * 1 : this port is valid
1930 *
1931 *
1932 * Function 6: Enable this port to start Tx/Rx data.
1933 * Syntax:
1934 * void MoxaPortEnable(int port);
1935 * int port : port number (0 - 127)
1936 *
1937 *
1938 * Function 7: Disable this port
1939 * Syntax:
1940 * void MoxaPortDisable(int port);
1941 * int port : port number (0 - 127)
1942 *
1943 *
1944 * Function 8: Get the maximun available baud rate of this port.
1945 * Syntax:
1946 * long MoxaPortGetMaxBaud(int port);
1947 * int port : port number (0 - 127)
1948 *
1949 * return: 0 : this port is invalid
1950 * 38400/57600/115200 bps
1951 *
1952 *
1953 * Function 9: Get the current baud rate of this port.
1954 * Syntax:
1955 * long MoxaPortGetCurBaud(int port);
1956 * int port : port number (0 - 127)
1957 *
1958 * return: 0 : this port is invalid
1959 * 50 - 115200 bps
1960 *
1961 *
1962 * Function 10: Setting baud rate of this port.
1963 * Syntax:
1964 * long MoxaPortSetBaud(int port, long baud);
1965 * int port : port number (0 - 127)
1966 * long baud : baud rate (50 - 115200)
1967 *
1968 * return: 0 : this port is invalid or baud < 50
1969 * 50 - 115200 : the real baud rate set to the port, if
1970 * the argument baud is large than maximun
1971 * available baud rate, the real setting
1972 * baud rate will be the maximun baud rate.
1973 *
1974 *
1975 * Function 11: Setting the data-bits/stop-bits/parity of this port
1976 * Syntax:
1977 * int MoxaPortSetMode(int port, int databits, int stopbits, int parity);
1978 * int port : port number (0 - 127)
1979 * int databits : data bits (8/7/6/5)
1980 * int stopbits : stop bits (2/1/0, 0 show 1.5 stop bits)
1981 int parity : parity (0:None,1:Odd,2:Even,3:Mark,4:Space)
1982 *
1983 * return: -1 : invalid parameter
1984 * 0 : setting O.K.
1985 *
1986 *
1987 * Function 12: Configure the port.
1988 * Syntax:
1989 * int MoxaPortSetTermio(int port, struct termios *termio);
1990 * int port : port number (0 - 127)
1991 * struct termios * termio : termio structure pointer
1992 *
1993 * return: -1 : this port is invalid or termio == NULL
1994 * 0 : setting O.K.
1995 *
1996 *
1997 * Function 13: Get the DTR/RTS state of this port.
1998 * Syntax:
1999 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
2000 * int port : port number (0 - 127)
2001 * int * dtrState : pointer to INT to receive the current DTR
2002 * state. (if NULL, this function will not
2003 * write to this address)
2004 * int * rtsState : pointer to INT to receive the current RTS
2005 * state. (if NULL, this function will not
2006 * write to this address)
2007 *
2008 * return: -1 : this port is invalid
2009 * 0 : O.K.
2010 *
2011 *
2012 * Function 14: Setting the DTR/RTS output state of this port.
2013 * Syntax:
2014 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
2015 * int port : port number (0 - 127)
2016 * int dtrState : DTR output state (0: off, 1: on)
2017 * int rtsState : RTS output state (0: off, 1: on)
2018 *
2019 *
2020 * Function 15: Setting the flow control of this port.
2021 * Syntax:
2022 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
2023 * int txFlow,int xany);
2024 * int port : port number (0 - 127)
2025 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
2026 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
2027 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
2028 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
2029 * int xany : S/W XANY flow control (0: no, 1: yes)
2030 *
2031 *
2032 * Function 16: Get ths line status of this port
2033 * Syntax:
2034 * int MoxaPortLineStatus(int port);
2035 * int port : port number (0 - 127)
2036 *
2037 * return: Bit 0 - CTS state (0: off, 1: on)
2038 * Bit 1 - DSR state (0: off, 1: on)
2039 * Bit 2 - DCD state (0: off, 1: on)
2040 *
2041 *
2042 * Function 17: Check the DCD state has changed since the last read
2043 * of this function.
2044 * Syntax:
2045 * int MoxaPortDCDChange(int port);
2046 * int port : port number (0 - 127)
2047 *
2048 * return: 0 : no changed
2049 * 1 : DCD has changed
2050 *
2051 *
2052 * Function 18: Check ths current DCD state is ON or not.
2053 * Syntax:
2054 * int MoxaPortDCDON(int port);
2055 * int port : port number (0 - 127)
2056 *
2057 * return: 0 : DCD off
2058 * 1 : DCD on
2059 *
2060 *
2061 * Function 19: Flush the Rx/Tx buffer data of this port.
2062 * Syntax:
2063 * void MoxaPortFlushData(int port, int mode);
2064 * int port : port number (0 - 127)
2065 * int mode
2066 * 0 : flush the Rx buffer
2067 * 1 : flush the Tx buffer
2068 * 2 : flush the Rx and Tx buffer
2069 *
2070 *
2071 * Function 20: Write data.
2072 * Syntax:
2073 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
2074 * int port : port number (0 - 127)
2075 * unsigned char * buffer : pointer to write data buffer.
2076 * int length : write data length
2077 *
2078 * return: 0 - length : real write data length
2079 *
2080 *
2081 * Function 21: Read data.
2082 * Syntax:
2083 * int MoxaPortReadData(int port, unsigned char * buffer, int length);
2084 * int port : port number (0 - 127)
2085 * unsigned char * buffer : pointer to read data buffer.
2086 * int length : read data buffer length
2087 *
2088 * return: 0 - length : real read data length
2089 *
2090 *
2091 * Function 22: Get the Tx buffer size of this port
2092 * Syntax:
2093 * int MoxaPortTxBufSize(int port);
2094 * int port : port number (0 - 127)
2095 *
2096 * return: .. : Tx buffer size
2097 *
2098 *
2099 * Function 23: Get the Rx buffer size of this port
2100 * Syntax:
2101 * int MoxaPortRxBufSize(int port);
2102 * int port : port number (0 - 127)
2103 *
2104 * return: .. : Rx buffer size
2105 *
2106 *
2107 * Function 24: Get the Tx buffer current queued data bytes
2108 * Syntax:
2109 * int MoxaPortTxQueue(int port);
2110 * int port : port number (0 - 127)
2111 *
2112 * return: .. : Tx buffer current queued data bytes
2113 *
2114 *
2115 * Function 25: Get the Tx buffer current free space
2116 * Syntax:
2117 * int MoxaPortTxFree(int port);
2118 * int port : port number (0 - 127)
2119 *
2120 * return: .. : Tx buffer current free space
2121 *
2122 *
2123 * Function 26: Get the Rx buffer current queued data bytes
2124 * Syntax:
2125 * int MoxaPortRxQueue(int port);
2126 * int port : port number (0 - 127)
2127 *
2128 * return: .. : Rx buffer current queued data bytes
2129 *
2130 *
2131 * Function 27: Get the Rx buffer current free space
2132 * Syntax:
2133 * int MoxaPortRxFree(int port);
2134 * int port : port number (0 - 127)
2135 *
2136 * return: .. : Rx buffer current free space
2137 *
2138 *
2139 * Function 28: Disable port data transmission.
2140 * Syntax:
2141 * void MoxaPortTxDisable(int port);
2142 * int port : port number (0 - 127)
2143 *
2144 *
2145 * Function 29: Enable port data transmission.
2146 * Syntax:
2147 * void MoxaPortTxEnable(int port);
2148 * int port : port number (0 - 127)
2149 *
2150 *
2151 * Function 30: Get the received BREAK signal count.
2152 * Syntax:
2153 * int MoxaPortGetBrkCnt(int port);
2154 * int port : port number (0 - 127)
2155 *
2156 * return: 0 - .. : BREAK signal count
2157 *
2158 *
2159 * Function 31: Get the received BREAK signal count and reset it.
2160 * Syntax:
2161 * int MoxaPortResetBrkCnt(int port);
2162 * int port : port number (0 - 127)
2163 *
2164 * return: 0 - .. : BREAK signal count
2165 *
2166 *
2167 * Function 32: Set the S/W flow control new XON/XOFF value, default
2168 * XON is 0x11 & XOFF is 0x13.
2169 * Syntax:
2170 * void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue);
2171 * int port : port number (0 - 127)
2172 * int xonValue : new XON value (0 - 255)
2173 * int xoffValue : new XOFF value (0 - 255)
2174 *
2175 *
2176 * Function 33: Check this port's transmission is hold by remote site
2177 * because the flow control.
2178 * Syntax:
2179 * int MoxaPortIsTxHold(int port);
2180 * int port : port number (0 - 127)
2181 *
2182 * return: 0 : normal
2183 * 1 : hold by remote site
2184 *
2185 *
2186 * Function 34: Send out a BREAK signal.
2187 * Syntax:
2188 * void MoxaPortSendBreak(int port, int ms100);
2189 * int port : port number (0 - 127)
2190 * int ms100 : break signal time interval.
2191 * unit: 100 mini-second. if ms100 == 0, it will
2192 * send out a about 250 ms BREAK signal.
2193 *
2194 */
2195 int MoxaPortIsValid(int port)
2196 {
2197
2198 if (moxaCard == 0)
2199 return (0);
2200 if (moxaChkPort[port] == 0)
2201 return (0);
2202 return (1);
2203 }
2204
2205 void MoxaPortEnable(int port)
2206 {
2207 unsigned long ofsAddr;
2208 int MoxaPortLineStatus(int);
2209 short lowwater = 512;
2210
2211 ofsAddr = moxaTableAddr[port];
2212 writew(lowwater, ofsAddr + Low_water);
2213 moxaBreakCnt[port] = 0;
2214 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2215 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2216 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
2217 } else {
2218 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
2219 }
2220
2221 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
2222 moxafunc(ofsAddr, FC_FlushQueue, 2);
2223
2224 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
2225 MoxaPortLineStatus(port);
2226 }
2227
2228 void MoxaPortDisable(int port)
2229 {
2230 unsigned long ofsAddr;
2231
2232 ofsAddr = moxaTableAddr[port];
2233 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
2234 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
2235 writew(0, ofsAddr + HostStat);
2236 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
2237 }
2238
2239 long MoxaPortGetMaxBaud(int port)
2240 {
2241 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2242 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
2243 return (460800L);
2244 else
2245 return (921600L);
2246 }
2247
2248
2249 long MoxaPortSetBaud(int port, long baud)
2250 {
2251 unsigned long ofsAddr;
2252 long max, clock;
2253 unsigned int val;
2254
2255 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
2256 return (0);
2257 ofsAddr = moxaTableAddr[port];
2258 if (baud > max)
2259 baud = max;
2260 if (max == 38400L)
2261 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2262 else if (max == 57600L)
2263 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2264 else
2265 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2266 val = clock / baud;
2267 moxafunc(ofsAddr, FC_SetBaud, val);
2268 baud = clock / val;
2269 moxaCurBaud[port] = baud;
2270 return (baud);
2271 }
2272
2273 int MoxaPortSetTermio(int port, struct termios *termio)
2274 {
2275 unsigned long ofsAddr;
2276 tcflag_t cflag;
2277 long baud;
2278 tcflag_t mode = 0;
2279
2280 if (moxaChkPort[port] == 0 || termio == 0)
2281 return (-1);
2282 ofsAddr = moxaTableAddr[port];
2283 cflag = termio->c_cflag; /* termio->c_cflag */
2284
2285 mode = termio->c_cflag & CSIZE;
2286 if (mode == CS5)
2287 mode = MX_CS5;
2288 else if (mode == CS6)
2289 mode = MX_CS6;
2290 else if (mode == CS7)
2291 mode = MX_CS7;
2292 else if (mode == CS8)
2293 mode = MX_CS8;
2294
2295 if (termio->c_cflag & CSTOPB) {
2296 if (mode == MX_CS5)
2297 mode |= MX_STOP15;
2298 else
2299 mode |= MX_STOP2;
2300 } else
2301 mode |= MX_STOP1;
2302
2303 if (termio->c_cflag & PARENB) {
2304 if (termio->c_cflag & PARODD)
2305 mode |= MX_PARODD;
2306 else
2307 mode |= MX_PAREVEN;
2308 } else
2309 mode |= MX_PARNONE;
2310
2311 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2312
2313 cflag &= (CBAUD | CBAUDEX);
2314 #ifndef B921600
2315 #define B921600 (B460800+1)
2316 #endif
2317 switch (cflag) {
2318 case B921600:
2319 baud = 921600L;
2320 break;
2321 case B460800:
2322 baud = 460800L;
2323 break;
2324 case B230400:
2325 baud = 230400L;
2326 break;
2327 case B115200:
2328 baud = 115200L;
2329 break;
2330 case B57600:
2331 baud = 57600L;
2332 break;
2333 case B38400:
2334 baud = 38400L;
2335 break;
2336 case B19200:
2337 baud = 19200L;
2338 break;
2339 case B9600:
2340 baud = 9600L;
2341 break;
2342 case B4800:
2343 baud = 4800L;
2344 break;
2345 case B2400:
2346 baud = 2400L;
2347 break;
2348 case B1800:
2349 baud = 1800L;
2350 break;
2351 case B1200:
2352 baud = 1200L;
2353 break;
2354 case B600:
2355 baud = 600L;
2356 break;
2357 case B300:
2358 baud = 300L;
2359 break;
2360 case B200:
2361 baud = 200L;
2362 break;
2363 case B150:
2364 baud = 150L;
2365 break;
2366 case B134:
2367 baud = 134L;
2368 break;
2369 case B110:
2370 baud = 110L;
2371 break;
2372 case B75:
2373 baud = 75L;
2374 break;
2375 case B50:
2376 baud = 50L;
2377 break;
2378 default:
2379 baud = 0;
2380 }
2381 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2382 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2383 if (baud == 921600L)
2384 return (-1);
2385 }
2386 MoxaPortSetBaud(port, baud);
2387
2388 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2389 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2390 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2391 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2392 wait_finish(ofsAddr);
2393
2394 }
2395 return (0);
2396 }
2397
2398 int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2399 {
2400
2401 if (!MoxaPortIsValid(port))
2402 return (-1);
2403 if (dtrState) {
2404 if (moxaLineCtrl[port] & DTR_ON)
2405 *dtrState = 1;
2406 else
2407 *dtrState = 0;
2408 }
2409 if (rtsState) {
2410 if (moxaLineCtrl[port] & RTS_ON)
2411 *rtsState = 1;
2412 else
2413 *rtsState = 0;
2414 }
2415 return (0);
2416 }
2417
2418 void MoxaPortLineCtrl(int port, int dtr, int rts)
2419 {
2420 unsigned long ofsAddr;
2421 int mode;
2422
2423 ofsAddr = moxaTableAddr[port];
2424 mode = 0;
2425 if (dtr)
2426 mode |= DTR_ON;
2427 if (rts)
2428 mode |= RTS_ON;
2429 moxaLineCtrl[port] = mode;
2430 moxafunc(ofsAddr, FC_LineControl, mode);
2431 }
2432
2433 void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2434 {
2435 unsigned long ofsAddr;
2436 int mode;
2437
2438 ofsAddr = moxaTableAddr[port];
2439 mode = 0;
2440 if (rts)
2441 mode |= RTS_FlowCtl;
2442 if (cts)
2443 mode |= CTS_FlowCtl;
2444 if (txflow)
2445 mode |= Tx_FlowCtl;
2446 if (rxflow)
2447 mode |= Rx_FlowCtl;
2448 if (txany)
2449 mode |= IXM_IXANY;
2450 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2451 }
2452
2453 int MoxaPortLineStatus(int port)
2454 {
2455 unsigned long ofsAddr;
2456 int val;
2457
2458 ofsAddr = moxaTableAddr[port];
2459 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2460 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2461 moxafunc(ofsAddr, FC_LineStatus, 0);
2462 val = readw(ofsAddr + FuncArg);
2463 } else {
2464 val = readw(ofsAddr + FlagStat) >> 4;
2465 }
2466 val &= 0x0B;
2467 if (val & 8) {
2468 val |= 4;
2469 if ((moxaDCDState[port] & DCD_oldstate) == 0)
2470 moxaDCDState[port] = (DCD_oldstate | DCD_changed);
2471 } else {
2472 if (moxaDCDState[port] & DCD_oldstate)
2473 moxaDCDState[port] = DCD_changed;
2474 }
2475 val &= 7;
2476 return (val);
2477 }
2478
2479 int MoxaPortDCDChange(int port)
2480 {
2481 int n;
2482
2483 if (moxaChkPort[port] == 0)
2484 return (0);
2485 n = moxaDCDState[port];
2486 moxaDCDState[port] &= ~DCD_changed;
2487 n &= DCD_changed;
2488 return (n);
2489 }
2490
2491 int MoxaPortDCDON(int port)
2492 {
2493 int n;
2494
2495 if (moxaChkPort[port] == 0)
2496 return (0);
2497 if (moxaDCDState[port] & DCD_oldstate)
2498 n = 1;
2499 else
2500 n = 0;
2501 return (n);
2502 }
2503
2504
2505 /*
2506 int MoxaDumpMem(int port, unsigned char * buffer, int len)
2507 {
2508 int i;
2509 unsigned long baseAddr,ofsAddr,ofs;
2510
2511 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2512 ofs = baseAddr + DynPage_addr + pageofs;
2513 if (len > 0x2000L)
2514 len = 0x2000L;
2515 for (i = 0; i < len; i++)
2516 buffer[i] = readb(ofs+i);
2517 }
2518 */
2519
2520
2521 int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2522 {
2523 int c, total, i;
2524 ushort tail;
2525 int cnt;
2526 ushort head, tx_mask, spage, epage;
2527 ushort pageno, pageofs, bufhead;
2528 unsigned long baseAddr, ofsAddr, ofs;
2529
2530 ofsAddr = moxaTableAddr[port];
2531 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2532 tx_mask = readw(ofsAddr + TX_mask);
2533 spage = readw(ofsAddr + Page_txb);
2534 epage = readw(ofsAddr + EndPage_txb);
2535 tail = readw(ofsAddr + TXwptr);
2536 head = readw(ofsAddr + TXrptr);
2537 c = (head > tail) ? (head - tail - 1)
2538 : (head - tail + tx_mask);
2539 if (c > len)
2540 c = len;
2541 moxaLog.txcnt[port] += c;
2542 total = c;
2543 if (spage == epage) {
2544 bufhead = readw(ofsAddr + Ofs_txb);
2545 writew(spage, baseAddr + Control_reg);
2546 while (c > 0) {
2547 if (head > tail)
2548 len = head - tail - 1;
2549 else
2550 len = tx_mask + 1 - tail;
2551 len = (c > len) ? len : c;
2552 ofs = baseAddr + DynPage_addr + bufhead + tail;
2553 for (i = 0; i < len; i++)
2554 writeb(*buffer++, ofs + i);
2555 tail = (tail + len) & tx_mask;
2556 c -= len;
2557 }
2558 writew(tail, ofsAddr + TXwptr);
2559 } else {
2560 len = c;
2561 pageno = spage + (tail >> 13);
2562 pageofs = tail & Page_mask;
2563 do {
2564 cnt = Page_size - pageofs;
2565 if (cnt > c)
2566 cnt = c;
2567 c -= cnt;
2568 writeb(pageno, baseAddr + Control_reg);
2569 ofs = baseAddr + DynPage_addr + pageofs;
2570 for (i = 0; i < cnt; i++)
2571 writeb(*buffer++, ofs + i);
2572 if (c == 0) {
2573 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2574 break;
2575 }
2576 if (++pageno == epage)
2577 pageno = spage;
2578 pageofs = 0;
2579 } while (1);
2580 }
2581 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2582 return (total);
2583 }
2584
2585 int MoxaPortReadData(int port, unsigned char * buffer, int space)
2586 {
2587 register ushort head, pageofs;
2588 int i, count, cnt, len, total, remain;
2589 ushort tail, rx_mask, spage, epage;
2590 ushort pageno, bufhead;
2591 unsigned long baseAddr, ofsAddr, ofs;
2592
2593 ofsAddr = moxaTableAddr[port];
2594 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2595 head = readw(ofsAddr + RXrptr);
2596 tail = readw(ofsAddr + RXwptr);
2597 rx_mask = readw(ofsAddr + RX_mask);
2598 spage = readw(ofsAddr + Page_rxb);
2599 epage = readw(ofsAddr + EndPage_rxb);
2600 count = (tail >= head) ? (tail - head)
2601 : (tail - head + rx_mask + 1);
2602 if (count == 0)
2603 return (0);
2604
2605 total = (space > count) ? count : space;
2606 remain = count - total;
2607 moxaLog.rxcnt[port] += total;
2608 count = total;
2609 if (spage == epage) {
2610 bufhead = readw(ofsAddr + Ofs_rxb);
2611 writew(spage, baseAddr + Control_reg);
2612 while (count > 0) {
2613 if (tail >= head)
2614 len = tail - head;
2615 else
2616 len = rx_mask + 1 - head;
2617 len = (count > len) ? len : count;
2618 ofs = baseAddr + DynPage_addr + bufhead + head;
2619 for (i = 0; i < len; i++)
2620 *buffer++ = readb(ofs + i);
2621 head = (head + len) & rx_mask;
2622 count -= len;
2623 }
2624 writew(head, ofsAddr + RXrptr);
2625 } else {
2626 len = count;
2627 pageno = spage + (head >> 13);
2628 pageofs = head & Page_mask;
2629 do {
2630 cnt = Page_size - pageofs;
2631 if (cnt > count)
2632 cnt = count;
2633 count -= cnt;
2634 writew(pageno, baseAddr + Control_reg);
2635 ofs = baseAddr + DynPage_addr + pageofs;
2636 for (i = 0; i < cnt; i++)
2637 *buffer++ = readb(ofs + i);
2638 if (count == 0) {
2639 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2640 break;
2641 }
2642 if (++pageno == epage)
2643 pageno = spage;
2644 pageofs = 0;
2645 } while (1);
2646 }
2647 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2648 moxaLowWaterChk = 1;
2649 moxaLowChkFlag[port] = 1;
2650 }
2651 return (total);
2652 }
2653
2654
2655 int MoxaPortTxQueue(int port)
2656 {
2657 unsigned long ofsAddr;
2658 ushort rptr, wptr, mask;
2659 int len;
2660
2661 ofsAddr = moxaTableAddr[port];
2662 rptr = readw(ofsAddr + TXrptr);
2663 wptr = readw(ofsAddr + TXwptr);
2664 mask = readw(ofsAddr + TX_mask);
2665 len = (wptr - rptr) & mask;
2666 return (len);
2667 }
2668
2669 int MoxaPortTxFree(int port)
2670 {
2671 unsigned long ofsAddr;
2672 ushort rptr, wptr, mask;
2673 int len;
2674
2675 ofsAddr = moxaTableAddr[port];
2676 rptr = readw(ofsAddr + TXrptr);
2677 wptr = readw(ofsAddr + TXwptr);
2678 mask = readw(ofsAddr + TX_mask);
2679 len = mask - ((wptr - rptr) & mask);
2680 return (len);
2681 }
2682
2683 int MoxaPortRxQueue(int port)
2684 {
2685 unsigned long ofsAddr;
2686 ushort rptr, wptr, mask;
2687 int len;
2688
2689 ofsAddr = moxaTableAddr[port];
2690 rptr = readw(ofsAddr + RXrptr);
2691 wptr = readw(ofsAddr + RXwptr);
2692 mask = readw(ofsAddr + RX_mask);
2693 len = (wptr - rptr) & mask;
2694 return (len);
2695 }
2696
2697
2698 void MoxaPortTxDisable(int port)
2699 {
2700 unsigned long ofsAddr;
2701
2702 ofsAddr = moxaTableAddr[port];
2703 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2704 }
2705
2706 void MoxaPortTxEnable(int port)
2707 {
2708 unsigned long ofsAddr;
2709
2710 ofsAddr = moxaTableAddr[port];
2711 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2712 }
2713
2714
2715 int MoxaPortResetBrkCnt(int port)
2716 {
2717 ushort cnt;
2718 cnt = moxaBreakCnt[port];
2719 moxaBreakCnt[port] = 0;
2720 return (cnt);
2721 }
2722
2723
2724 void MoxaPortSendBreak(int port, int ms100)
2725 {
2726 unsigned long ofsAddr;
2727
2728 ofsAddr = moxaTableAddr[port];
2729 if (ms100) {
2730 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2731 moxadelay(ms100 * (HZ / 10));
2732 } else {
2733 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2734 moxadelay(HZ / 4); /* 250 ms */
2735 }
2736 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2737 }
2738
2739 static int moxa_get_serial_info(struct moxa_str *info,
2740 struct serial_struct *retinfo)
2741 {
2742 struct serial_struct tmp;
2743
2744 if (!retinfo)
2745 return (-EFAULT);
2746 memset(&tmp, 0, sizeof(tmp));
2747 tmp.type = info->type;
2748 tmp.line = info->port;
2749 tmp.port = 0;
2750 tmp.irq = 0;
2751 tmp.flags = info->asyncflags;
2752 tmp.baud_base = 921600;
2753 tmp.close_delay = info->close_delay;
2754 tmp.closing_wait = info->closing_wait;
2755 tmp.custom_divisor = 0;
2756 tmp.hub6 = 0;
2757 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2758 return -EFAULT;
2759 return (0);
2760 }
2761
2762
2763 static int moxa_set_serial_info(struct moxa_str *info,
2764 struct serial_struct *new_info)
2765 {
2766 struct serial_struct new_serial;
2767
2768 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2769 return -EFAULT;
2770
2771 if ((new_serial.irq != 0) ||
2772 (new_serial.port != 0) ||
2773 // (new_serial.type != info->type) ||
2774 (new_serial.custom_divisor != 0) ||
2775 (new_serial.baud_base != 921600))
2776 return (-EPERM);
2777
2778 if (!suser()) {
2779 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2780 (info->asyncflags & ~ASYNC_USR_MASK)))
2781 return (-EPERM);
2782 } else {
2783 info->close_delay = new_serial.close_delay * HZ / 100;
2784 info->closing_wait = new_serial.closing_wait * HZ / 100;
2785 }
2786
2787 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2788 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2789
2790 if (new_serial.type == PORT_16550A) {
2791 MoxaSetFifo(info->port, 1);
2792 } else {
2793 MoxaSetFifo(info->port, 0);
2794 }
2795
2796 info->type = new_serial.type;
2797 return (0);
2798 }
2799
2800
2801
2802 /*****************************************************************************
2803 * Static local functions: *
2804 *****************************************************************************/
2805 /*
2806 * moxadelay - delays a specified number ticks
2807 */
2808 static void moxadelay(int tick)
2809 {
2810 unsigned long st, et;
2811
2812 st = jiffies;
2813 et = st + tick;
2814 while (jiffies < et);
2815 }
2816
2817 static void moxafunc(unsigned long ofsAddr, int cmd, ushort arg)
2818 {
2819
2820 writew(arg, ofsAddr + FuncArg);
2821 writew(cmd, ofsAddr + FuncCode);
2822 wait_finish(ofsAddr);
2823 }
2824
2825 static void wait_finish(unsigned long ofsAddr)
2826 {
2827 unsigned long i, j;
2828
2829 i = jiffies;
2830 while (readw(ofsAddr + FuncCode) != 0) {
2831 j = jiffies;
2832 if ((j - i) > moxaFuncTout) {
2833 return;
2834 }
2835 }
2836 }
2837
2838 static void low_water_check(unsigned long ofsAddr)
2839 {
2840 int len;
2841 ushort rptr, wptr, mask;
2842
2843 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2844 rptr = readw(ofsAddr + RXrptr);
2845 wptr = readw(ofsAddr + RXwptr);
2846 mask = readw(ofsAddr + RX_mask);
2847 len = (wptr - rptr) & mask;
2848 if (len <= Low_water)
2849 moxafunc(ofsAddr, FC_SendXon, 0);
2850 }
2851 }
2852
2853 static int moxaloadbios(int cardno, unsigned char *tmp, int len)
2854 {
2855 unsigned long baseAddr;
2856 int i;
2857
2858 if(copy_from_user(moxaBuff, tmp, len))
2859 return -EFAULT;
2860 baseAddr = moxaBaseAddr[cardno];
2861 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2862 moxadelay(1); /* delay 10 ms */
2863 for (i = 0; i < 4096; i++)
2864 writeb(0, baseAddr + i); /* clear fix page */
2865 for (i = 0; i < len; i++)
2866 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2867 writeb(0, baseAddr + Control_reg); /* restart */
2868 return (0);
2869 }
2870
2871 static int moxafindcard(int cardno)
2872 {
2873 unsigned long baseAddr;
2874 ushort tmp;
2875
2876 baseAddr = moxaBaseAddr[cardno];
2877 switch (moxa_boards[cardno].boardType) {
2878 case MOXA_BOARD_C218_ISA:
2879 case MOXA_BOARD_C218_PCI:
2880 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2881 return (-1);
2882 }
2883 break;
2884 case MOXA_BOARD_CP204J:
2885 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2886 return (-1);
2887 }
2888 break;
2889 default:
2890 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2891 return (-1);
2892 }
2893 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2894 return (-2);
2895 }
2896 }
2897 return (0);
2898 }
2899
2900 static int moxaload320b(int cardno, unsigned char * tmp, int len)
2901 {
2902 unsigned long baseAddr;
2903 int i;
2904
2905 if(copy_from_user(moxaBuff, tmp, len))
2906 return -EFAULT;
2907 baseAddr = moxaBaseAddr[cardno];
2908 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2909 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2910 for (i = 0; i < 7168; i++)
2911 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2912 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2913 for (i = 0; i < (len - 7168); i++)
2914 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2915 return (0);
2916 }
2917
2918 static int moxaloadcode(int cardno, unsigned char * tmp, int len)
2919 {
2920 unsigned long baseAddr, ofsAddr;
2921 int retval, port, i;
2922
2923 if(copy_from_user(moxaBuff, tmp, len))
2924 return -EFAULT;
2925 baseAddr = moxaBaseAddr[cardno];
2926 switch (moxa_boards[cardno].boardType) {
2927 case MOXA_BOARD_C218_ISA:
2928 case MOXA_BOARD_C218_PCI:
2929 case MOXA_BOARD_CP204J:
2930 retval = moxaloadc218(cardno, baseAddr, len);
2931 if (retval)
2932 return (retval);
2933 port = cardno * MAX_PORTS_PER_BOARD;
2934 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2935 moxaChkPort[port] = 1;
2936 moxaCurBaud[port] = 9600L;
2937 moxaDCDState[port] = 0;
2938 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2939 ofsAddr = moxaTableAddr[port];
2940 writew(C218rx_mask, ofsAddr + RX_mask);
2941 writew(C218tx_mask, ofsAddr + TX_mask);
2942 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2943 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2944
2945 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2946 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2947
2948 }
2949 break;
2950 default:
2951 retval = moxaloadc320(cardno, baseAddr, len,
2952 &moxa_boards[cardno].numPorts);
2953 if (retval)
2954 return (retval);
2955 port = cardno * MAX_PORTS_PER_BOARD;
2956 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2957 moxaChkPort[port] = 1;
2958 moxaCurBaud[port] = 9600L;
2959 moxaDCDState[port] = 0;
2960 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2961 ofsAddr = moxaTableAddr[port];
2962 if (moxa_boards[cardno].numPorts == 8) {
2963 writew(C320p8rx_mask, ofsAddr + RX_mask);
2964 writew(C320p8tx_mask, ofsAddr + TX_mask);
2965 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2966 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2967 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2968 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2969
2970 } else if (moxa_boards[cardno].numPorts == 16) {
2971 writew(C320p16rx_mask, ofsAddr + RX_mask);
2972 writew(C320p16tx_mask, ofsAddr + TX_mask);
2973 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2974 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2975 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2976 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2977
2978 } else if (moxa_boards[cardno].numPorts == 24) {
2979 writew(C320p24rx_mask, ofsAddr + RX_mask);
2980 writew(C320p24tx_mask, ofsAddr + TX_mask);
2981 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2982 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2983 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2984 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2985 } else if (moxa_boards[cardno].numPorts == 32) {
2986 writew(C320p32rx_mask, ofsAddr + RX_mask);
2987 writew(C320p32tx_mask, ofsAddr + TX_mask);
2988 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2989 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2990 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2991 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2992 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2993 }
2994 }
2995 break;
2996 }
2997 return (0);
2998 }
2999
3000 static int moxaloadc218(int cardno, unsigned long baseAddr, int len)
3001 {
3002 char retry;
3003 int i, j, len1, len2;
3004 ushort usum, *ptr, keycode;
3005
3006 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
3007 keycode = CP204J_KeyCode;
3008 else
3009 keycode = C218_KeyCode;
3010 usum = 0;
3011 len1 = len >> 1;
3012 ptr = (ushort *) moxaBuff;
3013 for (i = 0; i < len1; i++)
3014 usum += *(ptr + i);
3015 retry = 0;
3016 do {
3017 len1 = len >> 1;
3018 j = 0;
3019 while (len1) {
3020 len2 = (len1 > 2048) ? 2048 : len1;
3021 len1 -= len2;
3022 for (i = 0; i < len2 << 1; i++)
3023 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
3024 j += i;
3025
3026 writew(len2, baseAddr + C218DLoad_len);
3027 writew(0, baseAddr + C218_key);
3028 for (i = 0; i < 100; i++) {
3029 if (readw(baseAddr + C218_key) == keycode)
3030 break;
3031 moxadelay(1); /* delay 10 ms */
3032 }
3033 if (readw(baseAddr + C218_key) != keycode) {
3034 return (-1);
3035 }
3036 }
3037 writew(0, baseAddr + C218DLoad_len);
3038 writew(usum, baseAddr + C218check_sum);
3039 writew(0, baseAddr + C218_key);
3040 for (i = 0; i < 100; i++) {
3041 if (readw(baseAddr + C218_key) == keycode)
3042 break;
3043 moxadelay(1); /* delay 10 ms */
3044 }
3045 retry++;
3046 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
3047 if (readb(baseAddr + C218chksum_ok) != 1) {
3048 return (-1);
3049 }
3050 writew(0, baseAddr + C218_key);
3051 for (i = 0; i < 100; i++) {
3052 if (readw(baseAddr + Magic_no) == Magic_code)
3053 break;
3054 moxadelay(1); /* delay 10 ms */
3055 }
3056 if (readw(baseAddr + Magic_no) != Magic_code) {
3057 return (-1);
3058 }
3059 writew(1, baseAddr + Disable_IRQ);
3060 writew(0, baseAddr + Magic_no);
3061 for (i = 0; i < 100; i++) {
3062 if (readw(baseAddr + Magic_no) == Magic_code)
3063 break;
3064 moxadelay(1); /* delay 10 ms */
3065 }
3066 if (readw(baseAddr + Magic_no) != Magic_code) {
3067 return (-1);
3068 }
3069 moxaCard = 1;
3070 moxaIntNdx[cardno] = baseAddr + IRQindex;
3071 moxaIntPend[cardno] = baseAddr + IRQpending;
3072 moxaIntTable[cardno] = baseAddr + IRQtable;
3073 return (0);
3074 }
3075
3076 static int moxaloadc320(int cardno, unsigned long baseAddr, int len, int *numPorts)
3077 {
3078 ushort usum;
3079 int i, j, wlen, len2, retry;
3080 ushort *uptr;
3081
3082 usum = 0;
3083 wlen = len >> 1;
3084 uptr = (ushort *) moxaBuff;
3085 for (i = 0; i < wlen; i++)
3086 usum += uptr[i];
3087 retry = 0;
3088 j = 0;
3089 do {
3090 while (wlen) {
3091 if (wlen > 2048)
3092 len2 = 2048;
3093 else
3094 len2 = wlen;
3095 wlen -= len2;
3096 len2 <<= 1;
3097 for (i = 0; i < len2; i++)
3098 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
3099 len2 >>= 1;
3100 j += i;
3101 writew(len2, baseAddr + C320DLoad_len);
3102 writew(0, baseAddr + C320_key);
3103 for (i = 0; i < 10; i++) {
3104 if (readw(baseAddr + C320_key) == C320_KeyCode)
3105 break;
3106 moxadelay(1);
3107 }
3108 if (readw(baseAddr + C320_key) != C320_KeyCode)
3109 return (-1);
3110 }
3111 writew(0, baseAddr + C320DLoad_len);
3112 writew(usum, baseAddr + C320check_sum);
3113 writew(0, baseAddr + C320_key);
3114 for (i = 0; i < 10; i++) {
3115 if (readw(baseAddr + C320_key) == C320_KeyCode)
3116 break;
3117 moxadelay(1);
3118 }
3119 retry++;
3120 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
3121 if (readb(baseAddr + C320chksum_ok) != 1)
3122 return (-1);
3123 writew(0, baseAddr + C320_key);
3124 for (i = 0; i < 600; i++) {
3125 if (readw(baseAddr + Magic_no) == Magic_code)
3126 break;
3127 moxadelay(1);
3128 }
3129 if (readw(baseAddr + Magic_no) != Magic_code)
3130 return (-100);
3131
3132 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
3133 writew(0x3800, baseAddr + TMS320_PORT1);
3134 writew(0x3900, baseAddr + TMS320_PORT2);
3135 writew(28499, baseAddr + TMS320_CLOCK);
3136 } else {
3137 writew(0x3200, baseAddr + TMS320_PORT1);
3138 writew(0x3400, baseAddr + TMS320_PORT2);
3139 writew(19999, baseAddr + TMS320_CLOCK);
3140 }
3141 writew(1, baseAddr + Disable_IRQ);
3142 writew(0, baseAddr + Magic_no);
3143 for (i = 0; i < 500; i++) {
3144 if (readw(baseAddr + Magic_no) == Magic_code)
3145 break;
3146 moxadelay(1);
3147 }
3148 if (readw(baseAddr + Magic_no) != Magic_code)
3149 return (-102);
3150
3151 j = readw(baseAddr + Module_cnt);
3152 if (j <= 0)
3153 return (-101);
3154 *numPorts = j * 8;
3155 writew(j, baseAddr + Module_no);
3156 writew(0, baseAddr + Magic_no);
3157 for (i = 0; i < 600; i++) {
3158 if (readw(baseAddr + Magic_no) == Magic_code)
3159 break;
3160 moxadelay(1);
3161 }
3162 if (readw(baseAddr + Magic_no) != Magic_code)
3163 return (-102);
3164 moxaCard = 1;
3165 moxaIntNdx[cardno] = baseAddr + IRQindex;
3166 moxaIntPend[cardno] = baseAddr + IRQpending;
3167 moxaIntTable[cardno] = baseAddr + IRQtable;
3168 return (0);
3169 }
3170
3171 long MoxaPortGetCurBaud(int port)
3172 {
3173
3174 if (moxaChkPort[port] == 0)
3175 return (0);
3176 return (moxaCurBaud[port]);
3177 }
3178
3179 static void MoxaSetFifo(int port, int enable)
3180 {
3181 unsigned long ofsAddr = moxaTableAddr[port];
3182
3183 if (!enable) {
3184 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
3185 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
3186 } else {
3187 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
3188 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
3189 }
3190 }
3191
3192 #if 0
3193 int MoxaPortSetMode(int port, int databits, int stopbits, int parity)
3194 {
3195 unsigned long ofsAddr;
3196 int val;
3197
3198 val = 0;
3199 switch (databits) {
3200 case 5:
3201 val |= 0;
3202 break;
3203 case 6:
3204 val |= 1;
3205 break;
3206 case 7:
3207 val |= 2;
3208 break;
3209 case 8:
3210 val |= 3;
3211 break;
3212 default:
3213 return (-1);
3214 }
3215 switch (stopbits) {
3216 case 0:
3217 val |= 0;
3218 break; /* stop bits 1.5 */
3219 case 1:
3220 val |= 0;
3221 break;
3222 case 2:
3223 val |= 4;
3224 break;
3225 default:
3226 return (-1);
3227 }
3228 switch (parity) {
3229 case 0:
3230 val |= 0x00;
3231 break; /* None */
3232 case 1:
3233 val |= 0x08;
3234 break; /* Odd */
3235 case 2:
3236 val |= 0x18;
3237 break; /* Even */
3238 case 3:
3239 val |= 0x28;
3240 break; /* Mark */
3241 case 4:
3242 val |= 0x38;
3243 break; /* Space */
3244 default:
3245 return (-1);
3246 }
3247 ofsAddr = moxaTableAddr[port];
3248 moxafunc(ofsAddr, FC_SetMode, val);
3249 return (0);
3250 }
3251
3252 int MoxaPortTxBufSize(int port)
3253 {
3254 unsigned long ofsAddr;
3255 int size;
3256
3257 ofsAddr = moxaTableAddr[port];
3258 size = readw(ofsAddr + TX_mask);
3259 return (size);
3260 }
3261
3262 int MoxaPortRxBufSize(int port)
3263 {
3264 unsigned long ofsAddr;
3265 int size;
3266
3267 ofsAddr = moxaTableAddr[port];
3268 size = readw(ofsAddr + RX_mask);
3269 return (size);
3270 }
3271
3272 int MoxaPortRxFree(int port)
3273 {
3274 unsigned long ofsAddr;
3275 ushort rptr, wptr, mask;
3276 int len;
3277
3278 ofsAddr = moxaTableAddr[port];
3279 rptr = readw(ofsAddr + RXrptr);
3280 wptr = readw(ofsAddr + RXwptr);
3281 mask = readw(ofsAddr + RX_mask);
3282 len = mask - ((wptr - rptr) & mask);
3283 return (len);
3284 }
3285 int MoxaPortGetBrkCnt(int port)
3286 {
3287 return (moxaBreakCnt[port]);
3288 }
3289
3290 void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue)
3291 {
3292 unsigned long ofsAddr;
3293
3294 ofsAddr = moxaTableAddr[port];
3295 writew(xonValue, ofsAddr + FuncArg);
3296 writew(xoffValue, ofsAddr + FuncArg1);
3297 writew(FC_SetXonXoff, ofsAddr + FuncCode);
3298 wait_finish(ofsAddr);
3299 }
3300
3301 int MoxaPortIsTxHold(int port)
3302 {
3303 unsigned long ofsAddr;
3304 int val;
3305
3306 ofsAddr = moxaTableAddr[port];
3307 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
3308 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
3309 moxafunc(ofsAddr, FC_GetCCSR, 0);
3310 val = readw(ofsAddr + FuncArg);
3311 if (val & 0x04)
3312 return (1);
3313 } else {
3314 if (readw(ofsAddr + FlagStat) & Tx_flowOff)
3315 return (1);
3316 }
3317 return (0);
3318 }
3319 #endif
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