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[PATCH] MAINTAINERS: sbp2 driver is not orphaned.
[linux-2.6/kmemtrace.git] / drivers / char / moxa.c
blob79e490ef2cf2ea352045e2d5a71913bac50158eb
1 /*****************************************************************************/
2 /*
3 * moxa.c -- MOXA Intellio family multiport serial driver.
4 *
5 * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com.tw).
6 *
7 * This code is loosely based on the Linux serial driver, written by
8 * Linus Torvalds, Theodore T'so and others.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25 /*
26 * MOXA Intellio Series Driver
27 * for : LINUX
28 * date : 1999/1/7
29 * version : 5.1
30 */
31
32 #include <linux/config.h>
33 #include <linux/module.h>
34 #include <linux/types.h>
35 #include <linux/mm.h>
36 #include <linux/ioport.h>
37 #include <linux/errno.h>
38 #include <linux/signal.h>
39 #include <linux/sched.h>
40 #include <linux/timer.h>
41 #include <linux/interrupt.h>
42 #include <linux/tty.h>
43 #include <linux/tty_flip.h>
44 #include <linux/major.h>
45 #include <linux/string.h>
46 #include <linux/fcntl.h>
47 #include <linux/ptrace.h>
48 #include <linux/serial.h>
49 #include <linux/tty_driver.h>
50 #include <linux/delay.h>
51 #include <linux/pci.h>
52 #include <linux/init.h>
53 #include <linux/bitops.h>
54
55 #include <asm/system.h>
56 #include <asm/io.h>
57 #include <asm/uaccess.h>
58
59 #define MOXA_VERSION "5.1k"
60
61 #define MOXAMAJOR 172
62 #define MOXACUMAJOR 173
63
64 #define put_to_user(arg1, arg2) put_user(arg1, (unsigned long *)arg2)
65 #define get_from_user(arg1, arg2) get_user(arg1, (unsigned int *)arg2)
66
67 #define MAX_BOARDS 4 /* Don't change this value */
68 #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
69 #define MAX_PORTS 128 /* Don't change this value */
70
71 /*
72 * Define the Moxa PCI vendor and device IDs.
73 */
74 #define MOXA_BUS_TYPE_ISA 0
75 #define MOXA_BUS_TYPE_PCI 1
76
77 #ifndef PCI_VENDOR_ID_MOXA
78 #define PCI_VENDOR_ID_MOXA 0x1393
79 #endif
80 #ifndef PCI_DEVICE_ID_CP204J
81 #define PCI_DEVICE_ID_CP204J 0x2040
82 #endif
83 #ifndef PCI_DEVICE_ID_C218
84 #define PCI_DEVICE_ID_C218 0x2180
85 #endif
86 #ifndef PCI_DEVICE_ID_C320
87 #define PCI_DEVICE_ID_C320 0x3200
88 #endif
89
90 enum {
91 MOXA_BOARD_C218_PCI = 1,
92 MOXA_BOARD_C218_ISA,
93 MOXA_BOARD_C320_PCI,
94 MOXA_BOARD_C320_ISA,
95 MOXA_BOARD_CP204J,
96 };
97
98 static char *moxa_brdname[] =
99 {
100 "C218 Turbo PCI series",
101 "C218 Turbo ISA series",
102 "C320 Turbo PCI series",
103 "C320 Turbo ISA series",
104 "CP-204J series",
105 };
106
107 #ifdef CONFIG_PCI
108 static struct pci_device_id moxa_pcibrds[] = {
109 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C218, PCI_ANY_ID, PCI_ANY_ID,
110 0, 0, MOXA_BOARD_C218_PCI },
111 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C320, PCI_ANY_ID, PCI_ANY_ID,
112 0, 0, MOXA_BOARD_C320_PCI },
113 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_CP204J, PCI_ANY_ID, PCI_ANY_ID,
114 0, 0, MOXA_BOARD_CP204J },
115 { 0 }
116 };
117 MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
118 #endif /* CONFIG_PCI */
119
120 typedef struct _moxa_isa_board_conf {
121 int boardType;
122 int numPorts;
123 unsigned long baseAddr;
124 } moxa_isa_board_conf;
125
126 static moxa_isa_board_conf moxa_isa_boards[] =
127 {
128 /* {MOXA_BOARD_C218_ISA,8,0xDC000}, */
129 };
130
131 typedef struct _moxa_pci_devinfo {
132 ushort busNum;
133 ushort devNum;
134 } moxa_pci_devinfo;
135
136 typedef struct _moxa_board_conf {
137 int boardType;
138 int numPorts;
139 unsigned long baseAddr;
140 int busType;
141 moxa_pci_devinfo pciInfo;
142 } moxa_board_conf;
143
144 static moxa_board_conf moxa_boards[MAX_BOARDS];
145 static void __iomem *moxaBaseAddr[MAX_BOARDS];
146
147 struct moxa_str {
148 int type;
149 int port;
150 int close_delay;
151 unsigned short closing_wait;
152 int count;
153 int blocked_open;
154 long event; /* long req'd for set_bit --RR */
155 int asyncflags;
156 unsigned long statusflags;
157 struct tty_struct *tty;
158 int cflag;
159 wait_queue_head_t open_wait;
160 wait_queue_head_t close_wait;
161 struct work_struct tqueue;
162 };
163
164 struct mxser_mstatus {
165 tcflag_t cflag;
166 int cts;
167 int dsr;
168 int ri;
169 int dcd;
170 };
171
172 static struct mxser_mstatus GMStatus[MAX_PORTS];
173
174 /* statusflags */
175 #define TXSTOPPED 0x1
176 #define LOWWAIT 0x2
177 #define EMPTYWAIT 0x4
178 #define THROTTLE 0x8
179
180 /* event */
181 #define MOXA_EVENT_HANGUP 1
182
183 #define SERIAL_DO_RESTART
184
185
186 #define SERIAL_TYPE_NORMAL 1
187
188 #define WAKEUP_CHARS 256
189
190 #define PORTNO(x) ((x)->index)
191
192 static int verbose = 0;
193 static int ttymajor = MOXAMAJOR;
194 /* Variables for insmod */
195 #ifdef MODULE
196 static int baseaddr[] = {0, 0, 0, 0};
197 static int type[] = {0, 0, 0, 0};
198 static int numports[] = {0, 0, 0, 0};
199 #endif
200
201 MODULE_AUTHOR("William Chen");
202 MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
203 MODULE_LICENSE("GPL");
204 #ifdef MODULE
205 module_param_array(type, int, NULL, 0);
206 module_param_array(baseaddr, int, NULL, 0);
207 module_param_array(numports, int, NULL, 0);
208 #endif
209 module_param(ttymajor, int, 0);
210 module_param(verbose, bool, 0644);
211
212 static struct tty_driver *moxaDriver;
213 static struct moxa_str moxaChannels[MAX_PORTS];
214 static unsigned char *moxaXmitBuff;
215 static int moxaTimer_on;
216 static struct timer_list moxaTimer;
217 static int moxaEmptyTimer_on[MAX_PORTS];
218 static struct timer_list moxaEmptyTimer[MAX_PORTS];
219 static struct semaphore moxaBuffSem;
220
221 /*
222 * static functions:
223 */
224 static void do_moxa_softint(void *);
225 static int moxa_open(struct tty_struct *, struct file *);
226 static void moxa_close(struct tty_struct *, struct file *);
227 static int moxa_write(struct tty_struct *, const unsigned char *, int);
228 static int moxa_write_room(struct tty_struct *);
229 static void moxa_flush_buffer(struct tty_struct *);
230 static int moxa_chars_in_buffer(struct tty_struct *);
231 static void moxa_flush_chars(struct tty_struct *);
232 static void moxa_put_char(struct tty_struct *, unsigned char);
233 static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
234 static void moxa_throttle(struct tty_struct *);
235 static void moxa_unthrottle(struct tty_struct *);
236 static void moxa_set_termios(struct tty_struct *, struct termios *);
237 static void moxa_stop(struct tty_struct *);
238 static void moxa_start(struct tty_struct *);
239 static void moxa_hangup(struct tty_struct *);
240 static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
241 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
242 unsigned int set, unsigned int clear);
243 static void moxa_poll(unsigned long);
244 static void set_tty_param(struct tty_struct *);
245 static int block_till_ready(struct tty_struct *, struct file *,
246 struct moxa_str *);
247 static void setup_empty_event(struct tty_struct *);
248 static void check_xmit_empty(unsigned long);
249 static void shut_down(struct moxa_str *);
250 static void receive_data(struct moxa_str *);
251 /*
252 * moxa board interface functions:
253 */
254 static void MoxaDriverInit(void);
255 static int MoxaDriverIoctl(unsigned int, unsigned long, int);
256 static int MoxaDriverPoll(void);
257 static int MoxaPortsOfCard(int);
258 static int MoxaPortIsValid(int);
259 static void MoxaPortEnable(int);
260 static void MoxaPortDisable(int);
261 static long MoxaPortGetMaxBaud(int);
262 static long MoxaPortSetBaud(int, long);
263 static int MoxaPortSetTermio(int, struct termios *);
264 static int MoxaPortGetLineOut(int, int *, int *);
265 static void MoxaPortLineCtrl(int, int, int);
266 static void MoxaPortFlowCtrl(int, int, int, int, int, int);
267 static int MoxaPortLineStatus(int);
268 static int MoxaPortDCDChange(int);
269 static int MoxaPortDCDON(int);
270 static void MoxaPortFlushData(int, int);
271 static int MoxaPortWriteData(int, unsigned char *, int);
272 static int MoxaPortReadData(int, unsigned char *, int);
273 static int MoxaPortTxQueue(int);
274 static int MoxaPortRxQueue(int);
275 static int MoxaPortTxFree(int);
276 static void MoxaPortTxDisable(int);
277 static void MoxaPortTxEnable(int);
278 static int MoxaPortResetBrkCnt(int);
279 static void MoxaPortSendBreak(int, int);
280 static int moxa_get_serial_info(struct moxa_str *, struct serial_struct __user *);
281 static int moxa_set_serial_info(struct moxa_str *, struct serial_struct __user *);
282 static void MoxaSetFifo(int port, int enable);
283
284 static struct tty_operations moxa_ops = {
285 .open = moxa_open,
286 .close = moxa_close,
287 .write = moxa_write,
288 .write_room = moxa_write_room,
289 .flush_buffer = moxa_flush_buffer,
290 .chars_in_buffer = moxa_chars_in_buffer,
291 .flush_chars = moxa_flush_chars,
292 .put_char = moxa_put_char,
293 .ioctl = moxa_ioctl,
294 .throttle = moxa_throttle,
295 .unthrottle = moxa_unthrottle,
296 .set_termios = moxa_set_termios,
297 .stop = moxa_stop,
298 .start = moxa_start,
299 .hangup = moxa_hangup,
300 .tiocmget = moxa_tiocmget,
301 .tiocmset = moxa_tiocmset,
302 };
303
304 #ifdef CONFIG_PCI
305 static int moxa_get_PCI_conf(struct pci_dev *p, int board_type, moxa_board_conf * board)
306 {
307 board->baseAddr = pci_resource_start (p, 2);
308 board->boardType = board_type;
309 switch (board_type) {
310 case MOXA_BOARD_C218_ISA:
311 case MOXA_BOARD_C218_PCI:
312 board->numPorts = 8;
313 break;
314
315 case MOXA_BOARD_CP204J:
316 board->numPorts = 4;
317 break;
318 default:
319 board->numPorts = 0;
320 break;
321 }
322 board->busType = MOXA_BUS_TYPE_PCI;
323 board->pciInfo.busNum = p->bus->number;
324 board->pciInfo.devNum = p->devfn >> 3;
325
326 return (0);
327 }
328 #endif /* CONFIG_PCI */
329
330 static int __init moxa_init(void)
331 {
332 int i, numBoards;
333 struct moxa_str *ch;
334
335 printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION);
336 moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
337 if (!moxaDriver)
338 return -ENOMEM;
339
340 init_MUTEX(&moxaBuffSem);
341 moxaDriver->owner = THIS_MODULE;
342 moxaDriver->name = "ttyMX";
343 moxaDriver->devfs_name = "tts/a";
344 moxaDriver->major = ttymajor;
345 moxaDriver->minor_start = 0;
346 moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
347 moxaDriver->subtype = SERIAL_TYPE_NORMAL;
348 moxaDriver->init_termios = tty_std_termios;
349 moxaDriver->init_termios.c_iflag = 0;
350 moxaDriver->init_termios.c_oflag = 0;
351 moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
352 moxaDriver->init_termios.c_lflag = 0;
353 moxaDriver->flags = TTY_DRIVER_REAL_RAW;
354 tty_set_operations(moxaDriver, &moxa_ops);
355
356 moxaXmitBuff = NULL;
357
358 for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) {
359 ch->type = PORT_16550A;
360 ch->port = i;
361 INIT_WORK(&ch->tqueue, do_moxa_softint, ch);
362 ch->tty = NULL;
363 ch->close_delay = 5 * HZ / 10;
364 ch->closing_wait = 30 * HZ;
365 ch->count = 0;
366 ch->blocked_open = 0;
367 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
368 init_waitqueue_head(&ch->open_wait);
369 init_waitqueue_head(&ch->close_wait);
370 }
371
372 for (i = 0; i < MAX_BOARDS; i++) {
373 moxa_boards[i].boardType = 0;
374 moxa_boards[i].numPorts = 0;
375 moxa_boards[i].baseAddr = 0;
376 moxa_boards[i].busType = 0;
377 moxa_boards[i].pciInfo.busNum = 0;
378 moxa_boards[i].pciInfo.devNum = 0;
379 }
380 MoxaDriverInit();
381 printk("Tty devices major number = %d\n", ttymajor);
382
383 if (tty_register_driver(moxaDriver)) {
384 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
385 put_tty_driver(moxaDriver);
386 return -1;
387 }
388 for (i = 0; i < MAX_PORTS; i++) {
389 init_timer(&moxaEmptyTimer[i]);
390 moxaEmptyTimer[i].function = check_xmit_empty;
391 moxaEmptyTimer[i].data = (unsigned long) & moxaChannels[i];
392 moxaEmptyTimer_on[i] = 0;
393 }
394
395 init_timer(&moxaTimer);
396 moxaTimer.function = moxa_poll;
397 moxaTimer.expires = jiffies + (HZ / 50);
398 moxaTimer_on = 1;
399 add_timer(&moxaTimer);
400
401 /* Find the boards defined in source code */
402 numBoards = 0;
403 for (i = 0; i < MAX_BOARDS; i++) {
404 if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) ||
405 (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) {
406 moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType;
407 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
408 moxa_boards[numBoards].numPorts = 8;
409 else
410 moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts;
411 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
412 moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr;
413 if (verbose)
414 printk("Board %2d: %s board(baseAddr=%lx)\n",
415 numBoards + 1,
416 moxa_brdname[moxa_boards[numBoards].boardType - 1],
417 moxa_boards[numBoards].baseAddr);
418 numBoards++;
419 }
420 }
421 /* Find the boards defined form module args. */
422 #ifdef MODULE
423 for (i = 0; i < MAX_BOARDS; i++) {
424 if ((type[i] == MOXA_BOARD_C218_ISA) ||
425 (type[i] == MOXA_BOARD_C320_ISA)) {
426 if (verbose)
427 printk("Board %2d: %s board(baseAddr=%lx)\n",
428 numBoards + 1,
429 moxa_brdname[type[i] - 1],
430 (unsigned long) baseaddr[i]);
431 if (numBoards >= MAX_BOARDS) {
432 if (verbose)
433 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
434 continue;
435 }
436 moxa_boards[numBoards].boardType = type[i];
437 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
438 moxa_boards[numBoards].numPorts = 8;
439 else
440 moxa_boards[numBoards].numPorts = numports[i];
441 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
442 moxa_boards[numBoards].baseAddr = baseaddr[i];
443 numBoards++;
444 }
445 }
446 #endif
447 /* Find PCI boards here */
448 #ifdef CONFIG_PCI
449 {
450 struct pci_dev *p = NULL;
451 int n = (sizeof(moxa_pcibrds) / sizeof(moxa_pcibrds[0])) - 1;
452 i = 0;
453 while (i < n) {
454 while ((p = pci_get_device(moxa_pcibrds[i].vendor, moxa_pcibrds[i].device, p))!=NULL)
455 {
456 if (pci_enable_device(p))
457 continue;
458 if (numBoards >= MAX_BOARDS) {
459 if (verbose)
460 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
461 } else {
462 moxa_get_PCI_conf(p, moxa_pcibrds[i].driver_data,
463 &moxa_boards[numBoards]);
464 numBoards++;
465 }
466 }
467 i++;
468 }
469 }
470 #endif
471 for (i = 0; i < numBoards; i++) {
472 moxaBaseAddr[i] = ioremap((unsigned long) moxa_boards[i].baseAddr, 0x4000);
473 }
474
475 return (0);
476 }
477
478 static void __exit moxa_exit(void)
479 {
480 int i;
481
482 if (verbose)
483 printk("Unloading module moxa ...\n");
484
485 if (moxaTimer_on)
486 del_timer(&moxaTimer);
487
488 for (i = 0; i < MAX_PORTS; i++)
489 if (moxaEmptyTimer_on[i])
490 del_timer(&moxaEmptyTimer[i]);
491
492 if (tty_unregister_driver(moxaDriver))
493 printk("Couldn't unregister MOXA Intellio family serial driver\n");
494 put_tty_driver(moxaDriver);
495 if (verbose)
496 printk("Done\n");
497 }
498
499 module_init(moxa_init);
500 module_exit(moxa_exit);
501
502 static void do_moxa_softint(void *private_)
503 {
504 struct moxa_str *ch = (struct moxa_str *) private_;
505 struct tty_struct *tty;
506
507 if (ch && (tty = ch->tty)) {
508 if (test_and_clear_bit(MOXA_EVENT_HANGUP, &ch->event)) {
509 tty_hangup(tty); /* FIXME: module removal race here - AKPM */
510 wake_up_interruptible(&ch->open_wait);
511 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
512 }
513 }
514 }
515
516 static int moxa_open(struct tty_struct *tty, struct file *filp)
517 {
518 struct moxa_str *ch;
519 int port;
520 int retval;
521 unsigned long page;
522
523 port = PORTNO(tty);
524 if (port == MAX_PORTS) {
525 return (0);
526 }
527 if (!MoxaPortIsValid(port)) {
528 tty->driver_data = NULL;
529 return (-ENODEV);
530 }
531 down(&moxaBuffSem);
532 if (!moxaXmitBuff) {
533 page = get_zeroed_page(GFP_KERNEL);
534 if (!page) {
535 up(&moxaBuffSem);
536 return (-ENOMEM);
537 }
538 /* This test is guarded by the BuffSem so no longer needed
539 delete me in 2.5 */
540 if (moxaXmitBuff)
541 free_page(page);
542 else
543 moxaXmitBuff = (unsigned char *) page;
544 }
545 up(&moxaBuffSem);
546
547 ch = &moxaChannels[port];
548 ch->count++;
549 tty->driver_data = ch;
550 ch->tty = tty;
551 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
552 ch->statusflags = 0;
553 set_tty_param(tty);
554 MoxaPortLineCtrl(ch->port, 1, 1);
555 MoxaPortEnable(ch->port);
556 ch->asyncflags |= ASYNC_INITIALIZED;
557 }
558 retval = block_till_ready(tty, filp, ch);
559
560 moxa_unthrottle(tty);
561
562 if (ch->type == PORT_16550A) {
563 MoxaSetFifo(ch->port, 1);
564 } else {
565 MoxaSetFifo(ch->port, 0);
566 }
567
568 return (retval);
569 }
570
571 static void moxa_close(struct tty_struct *tty, struct file *filp)
572 {
573 struct moxa_str *ch;
574 int port;
575
576 port = PORTNO(tty);
577 if (port == MAX_PORTS) {
578 return;
579 }
580 if (!MoxaPortIsValid(port)) {
581 #ifdef SERIAL_DEBUG_CLOSE
582 printk("Invalid portno in moxa_close\n");
583 #endif
584 tty->driver_data = NULL;
585 return;
586 }
587 if (tty->driver_data == NULL) {
588 return;
589 }
590 if (tty_hung_up_p(filp)) {
591 return;
592 }
593 ch = (struct moxa_str *) tty->driver_data;
594
595 if ((tty->count == 1) && (ch->count != 1)) {
596 printk("moxa_close: bad serial port count; tty->count is 1, "
597 "ch->count is %d\n", ch->count);
598 ch->count = 1;
599 }
600 if (--ch->count < 0) {
601 printk("moxa_close: bad serial port count, device=%s\n",
602 tty->name);
603 ch->count = 0;
604 }
605 if (ch->count) {
606 return;
607 }
608 ch->asyncflags |= ASYNC_CLOSING;
609
610 ch->cflag = tty->termios->c_cflag;
611 if (ch->asyncflags & ASYNC_INITIALIZED) {
612 setup_empty_event(tty);
613 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
614 moxaEmptyTimer_on[ch->port] = 0;
615 del_timer(&moxaEmptyTimer[ch->port]);
616 }
617 shut_down(ch);
618 MoxaPortFlushData(port, 2);
619
620 if (tty->driver->flush_buffer)
621 tty->driver->flush_buffer(tty);
622 tty_ldisc_flush(tty);
623
624 tty->closing = 0;
625 ch->event = 0;
626 ch->tty = NULL;
627 if (ch->blocked_open) {
628 if (ch->close_delay) {
629 msleep_interruptible(jiffies_to_msecs(ch->close_delay));
630 }
631 wake_up_interruptible(&ch->open_wait);
632 }
633 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
634 wake_up_interruptible(&ch->close_wait);
635 }
636
637 static int moxa_write(struct tty_struct *tty,
638 const unsigned char *buf, int count)
639 {
640 struct moxa_str *ch;
641 int len, port;
642 unsigned long flags;
643
644 ch = (struct moxa_str *) tty->driver_data;
645 if (ch == NULL)
646 return (0);
647 port = ch->port;
648 save_flags(flags);
649 cli();
650 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
651 restore_flags(flags);
652
653 /*********************************************
654 if ( !(ch->statusflags & LOWWAIT) &&
655 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
656 ************************************************/
657 ch->statusflags |= LOWWAIT;
658 return (len);
659 }
660
661 static int moxa_write_room(struct tty_struct *tty)
662 {
663 struct moxa_str *ch;
664
665 if (tty->stopped)
666 return (0);
667 ch = (struct moxa_str *) tty->driver_data;
668 if (ch == NULL)
669 return (0);
670 return (MoxaPortTxFree(ch->port));
671 }
672
673 static void moxa_flush_buffer(struct tty_struct *tty)
674 {
675 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
676
677 if (ch == NULL)
678 return;
679 MoxaPortFlushData(ch->port, 1);
680 tty_wakeup(tty);
681 }
682
683 static int moxa_chars_in_buffer(struct tty_struct *tty)
684 {
685 int chars;
686 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
687
688 /*
689 * Sigh...I have to check if driver_data is NULL here, because
690 * if an open() fails, the TTY subsystem eventually calls
691 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
692 * routine. And since the open() failed, we return 0 here. TDJ
693 */
694 if (ch == NULL)
695 return (0);
696 chars = MoxaPortTxQueue(ch->port);
697 if (chars) {
698 /*
699 * Make it possible to wakeup anything waiting for output
700 * in tty_ioctl.c, etc.
701 */
702 if (!(ch->statusflags & EMPTYWAIT))
703 setup_empty_event(tty);
704 }
705 return (chars);
706 }
707
708 static void moxa_flush_chars(struct tty_struct *tty)
709 {
710 /*
711 * Don't think I need this, because this is called to empty the TX
712 * buffer for the 16450, 16550, etc.
713 */
714 }
715
716 static void moxa_put_char(struct tty_struct *tty, unsigned char c)
717 {
718 struct moxa_str *ch;
719 int port;
720 unsigned long flags;
721
722 ch = (struct moxa_str *) tty->driver_data;
723 if (ch == NULL)
724 return;
725 port = ch->port;
726 save_flags(flags);
727 cli();
728 moxaXmitBuff[0] = c;
729 MoxaPortWriteData(port, moxaXmitBuff, 1);
730 restore_flags(flags);
731 /************************************************
732 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
733 *************************************************/
734 ch->statusflags |= LOWWAIT;
735 }
736
737 static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
738 {
739 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
740 int port;
741 int flag = 0, dtr, rts;
742
743 port = PORTNO(tty);
744 if ((port != MAX_PORTS) && (!ch))
745 return (-EINVAL);
746
747 MoxaPortGetLineOut(ch->port, &dtr, &rts);
748 if (dtr)
749 flag |= TIOCM_DTR;
750 if (rts)
751 flag |= TIOCM_RTS;
752 dtr = MoxaPortLineStatus(ch->port);
753 if (dtr & 1)
754 flag |= TIOCM_CTS;
755 if (dtr & 2)
756 flag |= TIOCM_DSR;
757 if (dtr & 4)
758 flag |= TIOCM_CD;
759 return flag;
760 }
761
762 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
763 unsigned int set, unsigned int clear)
764 {
765 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
766 int port;
767 int dtr, rts;
768
769 port = PORTNO(tty);
770 if ((port != MAX_PORTS) && (!ch))
771 return (-EINVAL);
772
773 MoxaPortGetLineOut(ch->port, &dtr, &rts);
774 if (set & TIOCM_RTS)
775 rts = 1;
776 if (set & TIOCM_DTR)
777 dtr = 1;
778 if (clear & TIOCM_RTS)
779 rts = 0;
780 if (clear & TIOCM_DTR)
781 dtr = 0;
782 MoxaPortLineCtrl(ch->port, dtr, rts);
783 return 0;
784 }
785
786 static int moxa_ioctl(struct tty_struct *tty, struct file *file,
787 unsigned int cmd, unsigned long arg)
788 {
789 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
790 register int port;
791 void __user *argp = (void __user *)arg;
792 int retval;
793
794 port = PORTNO(tty);
795 if ((port != MAX_PORTS) && (!ch))
796 return (-EINVAL);
797
798 switch (cmd) {
799 case TCSBRK: /* SVID version: non-zero arg --> no break */
800 retval = tty_check_change(tty);
801 if (retval)
802 return (retval);
803 setup_empty_event(tty);
804 tty_wait_until_sent(tty, 0);
805 if (!arg)
806 MoxaPortSendBreak(ch->port, 0);
807 return (0);
808 case TCSBRKP: /* support for POSIX tcsendbreak() */
809 retval = tty_check_change(tty);
810 if (retval)
811 return (retval);
812 setup_empty_event(tty);
813 tty_wait_until_sent(tty, 0);
814 MoxaPortSendBreak(ch->port, arg);
815 return (0);
816 case TIOCGSOFTCAR:
817 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
818 case TIOCSSOFTCAR:
819 if(get_user(retval, (unsigned long __user *) argp))
820 return -EFAULT;
821 arg = retval;
822 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
823 (arg ? CLOCAL : 0));
824 if (C_CLOCAL(tty))
825 ch->asyncflags &= ~ASYNC_CHECK_CD;
826 else
827 ch->asyncflags |= ASYNC_CHECK_CD;
828 return (0);
829 case TIOCGSERIAL:
830 return moxa_get_serial_info(ch, argp);
831
832 case TIOCSSERIAL:
833 return moxa_set_serial_info(ch, argp);
834 default:
835 retval = MoxaDriverIoctl(cmd, arg, port);
836 }
837 return (retval);
838 }
839
840 static void moxa_throttle(struct tty_struct *tty)
841 {
842 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
843
844 ch->statusflags |= THROTTLE;
845 }
846
847 static void moxa_unthrottle(struct tty_struct *tty)
848 {
849 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
850
851 ch->statusflags &= ~THROTTLE;
852 }
853
854 static void moxa_set_termios(struct tty_struct *tty,
855 struct termios *old_termios)
856 {
857 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
858
859 if (ch == NULL)
860 return;
861 set_tty_param(tty);
862 if (!(old_termios->c_cflag & CLOCAL) &&
863 (tty->termios->c_cflag & CLOCAL))
864 wake_up_interruptible(&ch->open_wait);
865 }
866
867 static void moxa_stop(struct tty_struct *tty)
868 {
869 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
870
871 if (ch == NULL)
872 return;
873 MoxaPortTxDisable(ch->port);
874 ch->statusflags |= TXSTOPPED;
875 }
876
877
878 static void moxa_start(struct tty_struct *tty)
879 {
880 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
881
882 if (ch == NULL)
883 return;
884
885 if (!(ch->statusflags & TXSTOPPED))
886 return;
887
888 MoxaPortTxEnable(ch->port);
889 ch->statusflags &= ~TXSTOPPED;
890 }
891
892 static void moxa_hangup(struct tty_struct *tty)
893 {
894 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
895
896 moxa_flush_buffer(tty);
897 shut_down(ch);
898 ch->event = 0;
899 ch->count = 0;
900 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
901 ch->tty = NULL;
902 wake_up_interruptible(&ch->open_wait);
903 }
904
905 static void moxa_poll(unsigned long ignored)
906 {
907 register int card;
908 struct moxa_str *ch;
909 struct tty_struct *tp;
910 int i, ports;
911
912 moxaTimer_on = 0;
913 del_timer(&moxaTimer);
914
915 if (MoxaDriverPoll() < 0) {
916 moxaTimer.function = moxa_poll;
917 moxaTimer.expires = jiffies + (HZ / 50);
918 moxaTimer_on = 1;
919 add_timer(&moxaTimer);
920 return;
921 }
922 for (card = 0; card < MAX_BOARDS; card++) {
923 if ((ports = MoxaPortsOfCard(card)) <= 0)
924 continue;
925 ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
926 for (i = 0; i < ports; i++, ch++) {
927 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
928 continue;
929 if (!(ch->statusflags & THROTTLE) &&
930 (MoxaPortRxQueue(ch->port) > 0))
931 receive_data(ch);
932 if ((tp = ch->tty) == 0)
933 continue;
934 if (ch->statusflags & LOWWAIT) {
935 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
936 if (!tp->stopped) {
937 ch->statusflags &= ~LOWWAIT;
938 tty_wakeup(tp);
939 }
940 }
941 }
942 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
943 tty_insert_flip_char(tp, 0, TTY_BREAK);
944 tty_schedule_flip(tp);
945 }
946 if (MoxaPortDCDChange(ch->port)) {
947 if (ch->asyncflags & ASYNC_CHECK_CD) {
948 if (MoxaPortDCDON(ch->port))
949 wake_up_interruptible(&ch->open_wait);
950 else {
951 set_bit(MOXA_EVENT_HANGUP, &ch->event);
952 schedule_work(&ch->tqueue);
953 }
954 }
955 }
956 }
957 }
958
959 moxaTimer.function = moxa_poll;
960 moxaTimer.expires = jiffies + (HZ / 50);
961 moxaTimer_on = 1;
962 add_timer(&moxaTimer);
963 }
964
965 /******************************************************************************/
966
967 static void set_tty_param(struct tty_struct *tty)
968 {
969 register struct termios *ts;
970 struct moxa_str *ch;
971 int rts, cts, txflow, rxflow, xany;
972
973 ch = (struct moxa_str *) tty->driver_data;
974 ts = tty->termios;
975 if (ts->c_cflag & CLOCAL)
976 ch->asyncflags &= ~ASYNC_CHECK_CD;
977 else
978 ch->asyncflags |= ASYNC_CHECK_CD;
979 rts = cts = txflow = rxflow = xany = 0;
980 if (ts->c_cflag & CRTSCTS)
981 rts = cts = 1;
982 if (ts->c_iflag & IXON)
983 txflow = 1;
984 if (ts->c_iflag & IXOFF)
985 rxflow = 1;
986 if (ts->c_iflag & IXANY)
987 xany = 1;
988 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
989 MoxaPortSetTermio(ch->port, ts);
990 }
991
992 static int block_till_ready(struct tty_struct *tty, struct file *filp,
993 struct moxa_str *ch)
994 {
995 DECLARE_WAITQUEUE(wait,current);
996 unsigned long flags;
997 int retval;
998 int do_clocal = C_CLOCAL(tty);
999
1000 /*
1001 * If the device is in the middle of being closed, then block
1002 * until it's done, and then try again.
1003 */
1004 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
1005 if (ch->asyncflags & ASYNC_CLOSING)
1006 interruptible_sleep_on(&ch->close_wait);
1007 #ifdef SERIAL_DO_RESTART
1008 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1009 return (-EAGAIN);
1010 else
1011 return (-ERESTARTSYS);
1012 #else
1013 return (-EAGAIN);
1014 #endif
1015 }
1016 /*
1017 * If non-blocking mode is set, then make the check up front
1018 * and then exit.
1019 */
1020 if (filp->f_flags & O_NONBLOCK) {
1021 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1022 return (0);
1023 }
1024 /*
1025 * Block waiting for the carrier detect and the line to become free
1026 */
1027 retval = 0;
1028 add_wait_queue(&ch->open_wait, &wait);
1029 #ifdef SERIAL_DEBUG_OPEN
1030 printk("block_til_ready before block: ttys%d, count = %d\n",
1031 ch->line, ch->count);
1032 #endif
1033 save_flags(flags);
1034 cli();
1035 if (!tty_hung_up_p(filp))
1036 ch->count--;
1037 restore_flags(flags);
1038 ch->blocked_open++;
1039 while (1) {
1040 set_current_state(TASK_INTERRUPTIBLE);
1041 if (tty_hung_up_p(filp) ||
1042 !(ch->asyncflags & ASYNC_INITIALIZED)) {
1043 #ifdef SERIAL_DO_RESTART
1044 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1045 retval = -EAGAIN;
1046 else
1047 retval = -ERESTARTSYS;
1048 #else
1049 retval = -EAGAIN;
1050 #endif
1051 break;
1052 }
1053 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
1054 MoxaPortDCDON(ch->port)))
1055 break;
1056
1057 if (signal_pending(current)) {
1058 retval = -ERESTARTSYS;
1059 break;
1060 }
1061 schedule();
1062 }
1063 set_current_state(TASK_RUNNING);
1064 remove_wait_queue(&ch->open_wait, &wait);
1065 if (!tty_hung_up_p(filp))
1066 ch->count++;
1067 ch->blocked_open--;
1068 #ifdef SERIAL_DEBUG_OPEN
1069 printk("block_til_ready after blocking: ttys%d, count = %d\n",
1070 ch->line, ch->count);
1071 #endif
1072 if (retval)
1073 return (retval);
1074 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1075 return (0);
1076 }
1077
1078 static void setup_empty_event(struct tty_struct *tty)
1079 {
1080 struct moxa_str *ch = tty->driver_data;
1081 unsigned long flags;
1082
1083 save_flags(flags);
1084 cli();
1085 ch->statusflags |= EMPTYWAIT;
1086 moxaEmptyTimer_on[ch->port] = 0;
1087 del_timer(&moxaEmptyTimer[ch->port]);
1088 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1089 moxaEmptyTimer_on[ch->port] = 1;
1090 add_timer(&moxaEmptyTimer[ch->port]);
1091 restore_flags(flags);
1092 }
1093
1094 static void check_xmit_empty(unsigned long data)
1095 {
1096 struct moxa_str *ch;
1097
1098 ch = (struct moxa_str *) data;
1099 moxaEmptyTimer_on[ch->port] = 0;
1100 del_timer(&moxaEmptyTimer[ch->port]);
1101 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1102 if (MoxaPortTxQueue(ch->port) == 0) {
1103 ch->statusflags &= ~EMPTYWAIT;
1104 tty_wakeup(ch->tty);
1105 return;
1106 }
1107 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1108 moxaEmptyTimer_on[ch->port] = 1;
1109 add_timer(&moxaEmptyTimer[ch->port]);
1110 } else
1111 ch->statusflags &= ~EMPTYWAIT;
1112 }
1113
1114 static void shut_down(struct moxa_str *ch)
1115 {
1116 struct tty_struct *tp;
1117
1118 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1119 return;
1120
1121 tp = ch->tty;
1122
1123 MoxaPortDisable(ch->port);
1124
1125 /*
1126 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1127 */
1128 if (tp->termios->c_cflag & HUPCL)
1129 MoxaPortLineCtrl(ch->port, 0, 0);
1130
1131 ch->asyncflags &= ~ASYNC_INITIALIZED;
1132 }
1133
1134 static void receive_data(struct moxa_str *ch)
1135 {
1136 struct tty_struct *tp;
1137 struct termios *ts;
1138 int i, count, rc, space;
1139 unsigned char *charptr, *flagptr;
1140 unsigned long flags;
1141
1142 ts = NULL;
1143 tp = ch->tty;
1144 if (tp)
1145 ts = tp->termios;
1146 /**************************************************
1147 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1148 *****************************************************/
1149 if (!tp || !ts) {
1150 MoxaPortFlushData(ch->port, 0);
1151 return;
1152 }
1153 space = TTY_FLIPBUF_SIZE - tp->flip.count;
1154 if (space <= 0)
1155 return;
1156 charptr = tp->flip.char_buf_ptr;
1157 flagptr = tp->flip.flag_buf_ptr;
1158 rc = tp->flip.count;
1159 save_flags(flags);
1160 cli();
1161 count = MoxaPortReadData(ch->port, charptr, space);
1162 restore_flags(flags);
1163 for (i = 0; i < count; i++)
1164 *flagptr++ = 0;
1165 charptr += count;
1166 rc += count;
1167 tp->flip.count = rc;
1168 tp->flip.char_buf_ptr = charptr;
1169 tp->flip.flag_buf_ptr = flagptr;
1170 tty_schedule_flip(ch->tty);
1171 }
1172
1173 #define Magic_code 0x404
1174
1175 /*
1176 * System Configuration
1177 */
1178 /*
1179 * for C218 BIOS initialization
1180 */
1181 #define C218_ConfBase 0x800
1182 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1183 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1184 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1185 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1186 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1187 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1188 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1189 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1190 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1191 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1192
1193 #define C218_LoadBuf 0x0F00
1194 #define C218_KeyCode 0x218
1195 #define CP204J_KeyCode 0x204
1196
1197 /*
1198 * for C320 BIOS initialization
1199 */
1200 #define C320_ConfBase 0x800
1201 #define C320_LoadBuf 0x0f00
1202 #define STS_init 0x05 /* for C320_status */
1203
1204 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1205 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1206 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1207 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1208 #define C320check_sum C320_ConfBase + 8 /* WORD */
1209 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1210 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1211 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1212
1213 #define C320_KeyCode 0x320
1214
1215 #define FixPage_addr 0x0000 /* starting addr of static page */
1216 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1217 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1218 #define Control_reg 0x1ff0 /* select page and reset control */
1219 #define HW_reset 0x80
1220
1221 /*
1222 * Function Codes
1223 */
1224 #define FC_CardReset 0x80
1225 #define FC_ChannelReset 1 /* C320 firmware not supported */
1226 #define FC_EnableCH 2
1227 #define FC_DisableCH 3
1228 #define FC_SetParam 4
1229 #define FC_SetMode 5
1230 #define FC_SetRate 6
1231 #define FC_LineControl 7
1232 #define FC_LineStatus 8
1233 #define FC_XmitControl 9
1234 #define FC_FlushQueue 10
1235 #define FC_SendBreak 11
1236 #define FC_StopBreak 12
1237 #define FC_LoopbackON 13
1238 #define FC_LoopbackOFF 14
1239 #define FC_ClrIrqTable 15
1240 #define FC_SendXon 16
1241 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1242 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1243 #define FC_SetBreakIrq 19
1244 #define FC_SetLineIrq 20
1245 #define FC_SetFlowCtl 21
1246 #define FC_GenIrq 22
1247 #define FC_InCD180 23
1248 #define FC_OutCD180 24
1249 #define FC_InUARTreg 23
1250 #define FC_OutUARTreg 24
1251 #define FC_SetXonXoff 25
1252 #define FC_OutCD180CCR 26
1253 #define FC_ExtIQueue 27
1254 #define FC_ExtOQueue 28
1255 #define FC_ClrLineIrq 29
1256 #define FC_HWFlowCtl 30
1257 #define FC_GetClockRate 35
1258 #define FC_SetBaud 36
1259 #define FC_SetDataMode 41
1260 #define FC_GetCCSR 43
1261 #define FC_GetDataError 45
1262 #define FC_RxControl 50
1263 #define FC_ImmSend 51
1264 #define FC_SetXonState 52
1265 #define FC_SetXoffState 53
1266 #define FC_SetRxFIFOTrig 54
1267 #define FC_SetTxFIFOCnt 55
1268 #define FC_UnixRate 56
1269 #define FC_UnixResetTimer 57
1270
1271 #define RxFIFOTrig1 0
1272 #define RxFIFOTrig4 1
1273 #define RxFIFOTrig8 2
1274 #define RxFIFOTrig14 3
1275
1276 /*
1277 * Dual-Ported RAM
1278 */
1279 #define DRAM_global 0
1280 #define INT_data (DRAM_global + 0)
1281 #define Config_base (DRAM_global + 0x108)
1282
1283 #define IRQindex (INT_data + 0)
1284 #define IRQpending (INT_data + 4)
1285 #define IRQtable (INT_data + 8)
1286
1287 /*
1288 * Interrupt Status
1289 */
1290 #define IntrRx 0x01 /* receiver data O.K. */
1291 #define IntrTx 0x02 /* transmit buffer empty */
1292 #define IntrFunc 0x04 /* function complete */
1293 #define IntrBreak 0x08 /* received break */
1294 #define IntrLine 0x10 /* line status change
1295 for transmitter */
1296 #define IntrIntr 0x20 /* received INTR code */
1297 #define IntrQuit 0x40 /* received QUIT code */
1298 #define IntrEOF 0x80 /* received EOF code */
1299
1300 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1301 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1302
1303 #define Magic_no (Config_base + 0)
1304 #define Card_model_no (Config_base + 2)
1305 #define Total_ports (Config_base + 4)
1306 #define Module_cnt (Config_base + 8)
1307 #define Module_no (Config_base + 10)
1308 #define Timer_10ms (Config_base + 14)
1309 #define Disable_IRQ (Config_base + 20)
1310 #define TMS320_PORT1 (Config_base + 22)
1311 #define TMS320_PORT2 (Config_base + 24)
1312 #define TMS320_CLOCK (Config_base + 26)
1313
1314 /*
1315 * DATA BUFFER in DRAM
1316 */
1317 #define Extern_table 0x400 /* Base address of the external table
1318 (24 words * 64) total 3K bytes
1319 (24 words * 128) total 6K bytes */
1320 #define Extern_size 0x60 /* 96 bytes */
1321 #define RXrptr 0x00 /* read pointer for RX buffer */
1322 #define RXwptr 0x02 /* write pointer for RX buffer */
1323 #define TXrptr 0x04 /* read pointer for TX buffer */
1324 #define TXwptr 0x06 /* write pointer for TX buffer */
1325 #define HostStat 0x08 /* IRQ flag and general flag */
1326 #define FlagStat 0x0A
1327 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1328 /* x x x x | | | | */
1329 /* | | | + CTS flow */
1330 /* | | +--- RTS flow */
1331 /* | +------ TX Xon/Xoff */
1332 /* +--------- RX Xon/Xoff */
1333 #define Break_cnt 0x0E /* received break count */
1334 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1335 #define RX_mask 0x12
1336 #define TX_mask 0x14
1337 #define Ofs_rxb 0x16
1338 #define Ofs_txb 0x18
1339 #define Page_rxb 0x1A
1340 #define Page_txb 0x1C
1341 #define EndPage_rxb 0x1E
1342 #define EndPage_txb 0x20
1343 #define Data_error 0x22
1344 #define RxTrigger 0x28
1345 #define TxTrigger 0x2a
1346
1347 #define rRXwptr 0x34
1348 #define Low_water 0x36
1349
1350 #define FuncCode 0x40
1351 #define FuncArg 0x42
1352 #define FuncArg1 0x44
1353
1354 #define C218rx_size 0x2000 /* 8K bytes */
1355 #define C218tx_size 0x8000 /* 32K bytes */
1356
1357 #define C218rx_mask (C218rx_size - 1)
1358 #define C218tx_mask (C218tx_size - 1)
1359
1360 #define C320p8rx_size 0x2000
1361 #define C320p8tx_size 0x8000
1362 #define C320p8rx_mask (C320p8rx_size - 1)
1363 #define C320p8tx_mask (C320p8tx_size - 1)
1364
1365 #define C320p16rx_size 0x2000
1366 #define C320p16tx_size 0x4000
1367 #define C320p16rx_mask (C320p16rx_size - 1)
1368 #define C320p16tx_mask (C320p16tx_size - 1)
1369
1370 #define C320p24rx_size 0x2000
1371 #define C320p24tx_size 0x2000
1372 #define C320p24rx_mask (C320p24rx_size - 1)
1373 #define C320p24tx_mask (C320p24tx_size - 1)
1374
1375 #define C320p32rx_size 0x1000
1376 #define C320p32tx_size 0x1000
1377 #define C320p32rx_mask (C320p32rx_size - 1)
1378 #define C320p32tx_mask (C320p32tx_size - 1)
1379
1380 #define Page_size 0x2000
1381 #define Page_mask (Page_size - 1)
1382 #define C218rx_spage 3
1383 #define C218tx_spage 4
1384 #define C218rx_pageno 1
1385 #define C218tx_pageno 4
1386 #define C218buf_pageno 5
1387
1388 #define C320p8rx_spage 3
1389 #define C320p8tx_spage 4
1390 #define C320p8rx_pgno 1
1391 #define C320p8tx_pgno 4
1392 #define C320p8buf_pgno 5
1393
1394 #define C320p16rx_spage 3
1395 #define C320p16tx_spage 4
1396 #define C320p16rx_pgno 1
1397 #define C320p16tx_pgno 2
1398 #define C320p16buf_pgno 3
1399
1400 #define C320p24rx_spage 3
1401 #define C320p24tx_spage 4
1402 #define C320p24rx_pgno 1
1403 #define C320p24tx_pgno 1
1404 #define C320p24buf_pgno 2
1405
1406 #define C320p32rx_spage 3
1407 #define C320p32tx_ofs C320p32rx_size
1408 #define C320p32tx_spage 3
1409 #define C320p32buf_pgno 1
1410
1411 /*
1412 * Host Status
1413 */
1414 #define WakeupRx 0x01
1415 #define WakeupTx 0x02
1416 #define WakeupBreak 0x08
1417 #define WakeupLine 0x10
1418 #define WakeupIntr 0x20
1419 #define WakeupQuit 0x40
1420 #define WakeupEOF 0x80 /* used in VTIME control */
1421 #define WakeupRxTrigger 0x100
1422 #define WakeupTxTrigger 0x200
1423 /*
1424 * Flag status
1425 */
1426 #define Rx_over 0x01
1427 #define Xoff_state 0x02
1428 #define Tx_flowOff 0x04
1429 #define Tx_enable 0x08
1430 #define CTS_state 0x10
1431 #define DSR_state 0x20
1432 #define DCD_state 0x80
1433 /*
1434 * FlowControl
1435 */
1436 #define CTS_FlowCtl 1
1437 #define RTS_FlowCtl 2
1438 #define Tx_FlowCtl 4
1439 #define Rx_FlowCtl 8
1440 #define IXM_IXANY 0x10
1441
1442 #define LowWater 128
1443
1444 #define DTR_ON 1
1445 #define RTS_ON 2
1446 #define CTS_ON 1
1447 #define DSR_ON 2
1448 #define DCD_ON 8
1449
1450 /* mode definition */
1451 #define MX_CS8 0x03
1452 #define MX_CS7 0x02
1453 #define MX_CS6 0x01
1454 #define MX_CS5 0x00
1455
1456 #define MX_STOP1 0x00
1457 #define MX_STOP15 0x04
1458 #define MX_STOP2 0x08
1459
1460 #define MX_PARNONE 0x00
1461 #define MX_PAREVEN 0x40
1462 #define MX_PARODD 0xC0
1463
1464 /*
1465 * Query
1466 */
1467 #define QueryPort MAX_PORTS
1468
1469
1470
1471 struct mon_str {
1472 int tick;
1473 int rxcnt[MAX_PORTS];
1474 int txcnt[MAX_PORTS];
1475 };
1476 typedef struct mon_str mon_st;
1477
1478 #define DCD_changed 0x01
1479 #define DCD_oldstate 0x80
1480
1481 static unsigned char moxaBuff[10240];
1482 static void __iomem *moxaIntNdx[MAX_BOARDS];
1483 static void __iomem *moxaIntPend[MAX_BOARDS];
1484 static void __iomem *moxaIntTable[MAX_BOARDS];
1485 static char moxaChkPort[MAX_PORTS];
1486 static char moxaLineCtrl[MAX_PORTS];
1487 static void __iomem *moxaTableAddr[MAX_PORTS];
1488 static long moxaCurBaud[MAX_PORTS];
1489 static char moxaDCDState[MAX_PORTS];
1490 static char moxaLowChkFlag[MAX_PORTS];
1491 static int moxaLowWaterChk;
1492 static int moxaCard;
1493 static mon_st moxaLog;
1494 static int moxaFuncTout;
1495 static ushort moxaBreakCnt[MAX_PORTS];
1496
1497 static void moxadelay(int);
1498 static void moxafunc(void __iomem *, int, ushort);
1499 static void wait_finish(void __iomem *);
1500 static void low_water_check(void __iomem *);
1501 static int moxaloadbios(int, unsigned char __user *, int);
1502 static int moxafindcard(int);
1503 static int moxaload320b(int, unsigned char __user *, int);
1504 static int moxaloadcode(int, unsigned char __user *, int);
1505 static int moxaloadc218(int, void __iomem *, int);
1506 static int moxaloadc320(int, void __iomem *, int, int *);
1507
1508 /*****************************************************************************
1509 * Driver level functions: *
1510 * 1. MoxaDriverInit(void); *
1511 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1512 * 3. MoxaDriverPoll(void); *
1513 *****************************************************************************/
1514 void MoxaDriverInit(void)
1515 {
1516 int i;
1517
1518 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1519 moxaCard = 0;
1520 moxaLog.tick = 0;
1521 moxaLowWaterChk = 0;
1522 for (i = 0; i < MAX_PORTS; i++) {
1523 moxaChkPort[i] = 0;
1524 moxaLowChkFlag[i] = 0;
1525 moxaLineCtrl[i] = 0;
1526 moxaLog.rxcnt[i] = 0;
1527 moxaLog.txcnt[i] = 0;
1528 }
1529 }
1530
1531 #define MOXA 0x400
1532 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1533 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1534 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1535 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1536 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1537 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1538 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1539 #define MOXA_GETDATACOUNT (MOXA + 23)
1540 #define MOXA_GET_IOQUEUE (MOXA + 27)
1541 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1542 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1543 #define MOXA_GET_MAJOR (MOXA + 63)
1544 #define MOXA_GET_CUMAJOR (MOXA + 64)
1545 #define MOXA_GETMSTATUS (MOXA + 65)
1546
1547
1548 struct moxaq_str {
1549 int inq;
1550 int outq;
1551 };
1552
1553 struct dl_str {
1554 char __user *buf;
1555 int len;
1556 int cardno;
1557 };
1558
1559 static struct moxaq_str temp_queue[MAX_PORTS];
1560 static struct dl_str dltmp;
1561
1562 void MoxaPortFlushData(int port, int mode)
1563 {
1564 void __iomem *ofsAddr;
1565 if ((mode < 0) || (mode > 2))
1566 return;
1567 ofsAddr = moxaTableAddr[port];
1568 moxafunc(ofsAddr, FC_FlushQueue, mode);
1569 if (mode != 1) {
1570 moxaLowChkFlag[port] = 0;
1571 low_water_check(ofsAddr);
1572 }
1573 }
1574
1575 int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1576 {
1577 int i;
1578 int status;
1579 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1580 void __user *argp = (void __user *)arg;
1581
1582 if (port == QueryPort) {
1583 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1584 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1585 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1586 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1587 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1588 return (-EINVAL);
1589 }
1590 switch (cmd) {
1591 case MOXA_GET_CONF:
1592 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS * sizeof(moxa_board_conf)))
1593 return -EFAULT;
1594 return (0);
1595 case MOXA_INIT_DRIVER:
1596 if ((int) arg == 0x404)
1597 MoxaDriverInit();
1598 return (0);
1599 case MOXA_GETDATACOUNT:
1600 moxaLog.tick = jiffies;
1601 if(copy_to_user(argp, &moxaLog, sizeof(mon_st)))
1602 return -EFAULT;
1603 return (0);
1604 case MOXA_FLUSH_QUEUE:
1605 MoxaPortFlushData(port, arg);
1606 return (0);
1607 case MOXA_GET_IOQUEUE:
1608 for (i = 0; i < MAX_PORTS; i++) {
1609 if (moxaChkPort[i]) {
1610 temp_queue[i].inq = MoxaPortRxQueue(i);
1611 temp_queue[i].outq = MoxaPortTxQueue(i);
1612 }
1613 }
1614 if(copy_to_user(argp, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
1615 return -EFAULT;
1616 return (0);
1617 case MOXA_GET_OQUEUE:
1618 i = MoxaPortTxQueue(port);
1619 return put_user(i, (unsigned long __user *)argp);
1620 case MOXA_GET_IQUEUE:
1621 i = MoxaPortRxQueue(port);
1622 return put_user(i, (unsigned long __user *)argp);
1623 case MOXA_GET_MAJOR:
1624 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1625 return -EFAULT;
1626 return 0;
1627 case MOXA_GET_CUMAJOR:
1628 i = 0;
1629 if(copy_to_user(argp, &i, sizeof(int)))
1630 return -EFAULT;
1631 return 0;
1632 case MOXA_GETMSTATUS:
1633 for (i = 0; i < MAX_PORTS; i++) {
1634 GMStatus[i].ri = 0;
1635 GMStatus[i].dcd = 0;
1636 GMStatus[i].dsr = 0;
1637 GMStatus[i].cts = 0;
1638 if (!moxaChkPort[i]) {
1639 continue;
1640 } else {
1641 status = MoxaPortLineStatus(moxaChannels[i].port);
1642 if (status & 1)
1643 GMStatus[i].cts = 1;
1644 if (status & 2)
1645 GMStatus[i].dsr = 1;
1646 if (status & 4)
1647 GMStatus[i].dcd = 1;
1648 }
1649
1650 if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
1651 GMStatus[i].cflag = moxaChannels[i].cflag;
1652 else
1653 GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
1654 }
1655 if(copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
1656 return -EFAULT;
1657 return 0;
1658 default:
1659 return (-ENOIOCTLCMD);
1660 case MOXA_LOAD_BIOS:
1661 case MOXA_FIND_BOARD:
1662 case MOXA_LOAD_C320B:
1663 case MOXA_LOAD_CODE:
1664 break;
1665 }
1666
1667 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1668 return -EFAULT;
1669 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
1670 return -EINVAL;
1671
1672 switch(cmd)
1673 {
1674 case MOXA_LOAD_BIOS:
1675 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1676 return (i);
1677 case MOXA_FIND_BOARD:
1678 return moxafindcard(dltmp.cardno);
1679 case MOXA_LOAD_C320B:
1680 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1681 default: /* to keep gcc happy */
1682 return (0);
1683 case MOXA_LOAD_CODE:
1684 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1685 if (i == -1)
1686 return (-EFAULT);
1687 return (i);
1688
1689 }
1690 }
1691
1692 int MoxaDriverPoll(void)
1693 {
1694 register ushort temp;
1695 register int card;
1696 void __iomem *ofsAddr;
1697 void __iomem *ip;
1698 int port, p, ports;
1699
1700 if (moxaCard == 0)
1701 return (-1);
1702 for (card = 0; card < MAX_BOARDS; card++) {
1703 if ((ports = moxa_boards[card].numPorts) == 0)
1704 continue;
1705 if (readb(moxaIntPend[card]) == 0xff) {
1706 ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
1707 p = card * MAX_PORTS_PER_BOARD;
1708 ports <<= 1;
1709 for (port = 0; port < ports; port += 2, p++) {
1710 if ((temp = readw(ip + port)) != 0) {
1711 writew(0, ip + port);
1712 ofsAddr = moxaTableAddr[p];
1713 if (temp & IntrTx)
1714 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1715 if (temp & IntrBreak) {
1716 moxaBreakCnt[p]++;
1717 }
1718 if (temp & IntrLine) {
1719 if (readb(ofsAddr + FlagStat) & DCD_state) {
1720 if ((moxaDCDState[p] & DCD_oldstate) == 0)
1721 moxaDCDState[p] = (DCD_oldstate |
1722 DCD_changed);
1723 } else {
1724 if (moxaDCDState[p] & DCD_oldstate)
1725 moxaDCDState[p] = DCD_changed;
1726 }
1727 }
1728 }
1729 }
1730 writeb(0, moxaIntPend[card]);
1731 }
1732 if (moxaLowWaterChk) {
1733 p = card * MAX_PORTS_PER_BOARD;
1734 for (port = 0; port < ports; port++, p++) {
1735 if (moxaLowChkFlag[p]) {
1736 moxaLowChkFlag[p] = 0;
1737 ofsAddr = moxaTableAddr[p];
1738 low_water_check(ofsAddr);
1739 }
1740 }
1741 }
1742 }
1743 moxaLowWaterChk = 0;
1744 return (0);
1745 }
1746
1747 /*****************************************************************************
1748 * Card level function: *
1749 * 1. MoxaPortsOfCard(int cardno); *
1750 *****************************************************************************/
1751 int MoxaPortsOfCard(int cardno)
1752 {
1753
1754 if (moxa_boards[cardno].boardType == 0)
1755 return (0);
1756 return (moxa_boards[cardno].numPorts);
1757 }
1758
1759 /*****************************************************************************
1760 * Port level functions: *
1761 * 1. MoxaPortIsValid(int port); *
1762 * 2. MoxaPortEnable(int port); *
1763 * 3. MoxaPortDisable(int port); *
1764 * 4. MoxaPortGetMaxBaud(int port); *
1765 * 5. MoxaPortGetCurBaud(int port); *
1766 * 6. MoxaPortSetBaud(int port, long baud); *
1767 * 7. MoxaPortSetMode(int port, int databit, int stopbit, int parity); *
1768 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1769 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1770 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1771 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1772 * 12. MoxaPortLineStatus(int port); *
1773 * 13. MoxaPortDCDChange(int port); *
1774 * 14. MoxaPortDCDON(int port); *
1775 * 15. MoxaPortFlushData(int port, int mode); *
1776 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1777 * 17. MoxaPortReadData(int port, unsigned char * buffer, int length); *
1778 * 18. MoxaPortTxBufSize(int port); *
1779 * 19. MoxaPortRxBufSize(int port); *
1780 * 20. MoxaPortTxQueue(int port); *
1781 * 21. MoxaPortTxFree(int port); *
1782 * 22. MoxaPortRxQueue(int port); *
1783 * 23. MoxaPortRxFree(int port); *
1784 * 24. MoxaPortTxDisable(int port); *
1785 * 25. MoxaPortTxEnable(int port); *
1786 * 26. MoxaPortGetBrkCnt(int port); *
1787 * 27. MoxaPortResetBrkCnt(int port); *
1788 * 28. MoxaPortSetXonXoff(int port, int xonValue, int xoffValue); *
1789 * 29. MoxaPortIsTxHold(int port); *
1790 * 30. MoxaPortSendBreak(int port, int ticks); *
1791 *****************************************************************************/
1792 /*
1793 * Moxa Port Number Description:
1794 *
1795 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1796 * the port number using in MOXA driver functions will be 0 to 31 for
1797 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1798 * to 127 for fourth. For example, if you setup three MOXA boards,
1799 * first board is C218, second board is C320-16 and third board is
1800 * C320-32. The port number of first board (C218 - 8 ports) is from
1801 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1802 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1803 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1804 * 127 will be invalid.
1805 *
1806 *
1807 * Moxa Functions Description:
1808 *
1809 * Function 1: Driver initialization routine, this routine must be
1810 * called when initialized driver.
1811 * Syntax:
1812 * void MoxaDriverInit();
1813 *
1814 *
1815 * Function 2: Moxa driver private IOCTL command processing.
1816 * Syntax:
1817 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1818 *
1819 * unsigned int cmd : IOCTL command
1820 * unsigned long arg : IOCTL argument
1821 * int port : port number (0 - 127)
1822 *
1823 * return: 0 (OK)
1824 * -EINVAL
1825 * -ENOIOCTLCMD
1826 *
1827 *
1828 * Function 3: Moxa driver polling process routine.
1829 * Syntax:
1830 * int MoxaDriverPoll(void);
1831 *
1832 * return: 0 ; polling O.K.
1833 * -1 : no any Moxa card.
1834 *
1835 *
1836 * Function 4: Get the ports of this card.
1837 * Syntax:
1838 * int MoxaPortsOfCard(int cardno);
1839 *
1840 * int cardno : card number (0 - 3)
1841 *
1842 * return: 0 : this card is invalid
1843 * 8/16/24/32
1844 *
1845 *
1846 * Function 5: Check this port is valid or invalid
1847 * Syntax:
1848 * int MoxaPortIsValid(int port);
1849 * int port : port number (0 - 127, ref port description)
1850 *
1851 * return: 0 : this port is invalid
1852 * 1 : this port is valid
1853 *
1854 *
1855 * Function 6: Enable this port to start Tx/Rx data.
1856 * Syntax:
1857 * void MoxaPortEnable(int port);
1858 * int port : port number (0 - 127)
1859 *
1860 *
1861 * Function 7: Disable this port
1862 * Syntax:
1863 * void MoxaPortDisable(int port);
1864 * int port : port number (0 - 127)
1865 *
1866 *
1867 * Function 8: Get the maximun available baud rate of this port.
1868 * Syntax:
1869 * long MoxaPortGetMaxBaud(int port);
1870 * int port : port number (0 - 127)
1871 *
1872 * return: 0 : this port is invalid
1873 * 38400/57600/115200 bps
1874 *
1875 *
1876 * Function 9: Get the current baud rate of this port.
1877 * Syntax:
1878 * long MoxaPortGetCurBaud(int port);
1879 * int port : port number (0 - 127)
1880 *
1881 * return: 0 : this port is invalid
1882 * 50 - 115200 bps
1883 *
1884 *
1885 * Function 10: Setting baud rate of this port.
1886 * Syntax:
1887 * long MoxaPortSetBaud(int port, long baud);
1888 * int port : port number (0 - 127)
1889 * long baud : baud rate (50 - 115200)
1890 *
1891 * return: 0 : this port is invalid or baud < 50
1892 * 50 - 115200 : the real baud rate set to the port, if
1893 * the argument baud is large than maximun
1894 * available baud rate, the real setting
1895 * baud rate will be the maximun baud rate.
1896 *
1897 *
1898 * Function 11: Setting the data-bits/stop-bits/parity of this port
1899 * Syntax:
1900 * int MoxaPortSetMode(int port, int databits, int stopbits, int parity);
1901 * int port : port number (0 - 127)
1902 * int databits : data bits (8/7/6/5)
1903 * int stopbits : stop bits (2/1/0, 0 show 1.5 stop bits)
1904 int parity : parity (0:None,1:Odd,2:Even,3:Mark,4:Space)
1905 *
1906 * return: -1 : invalid parameter
1907 * 0 : setting O.K.
1908 *
1909 *
1910 * Function 12: Configure the port.
1911 * Syntax:
1912 * int MoxaPortSetTermio(int port, struct termios *termio);
1913 * int port : port number (0 - 127)
1914 * struct termios * termio : termio structure pointer
1915 *
1916 * return: -1 : this port is invalid or termio == NULL
1917 * 0 : setting O.K.
1918 *
1919 *
1920 * Function 13: Get the DTR/RTS state of this port.
1921 * Syntax:
1922 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1923 * int port : port number (0 - 127)
1924 * int * dtrState : pointer to INT to receive the current DTR
1925 * state. (if NULL, this function will not
1926 * write to this address)
1927 * int * rtsState : pointer to INT to receive the current RTS
1928 * state. (if NULL, this function will not
1929 * write to this address)
1930 *
1931 * return: -1 : this port is invalid
1932 * 0 : O.K.
1933 *
1934 *
1935 * Function 14: Setting the DTR/RTS output state of this port.
1936 * Syntax:
1937 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1938 * int port : port number (0 - 127)
1939 * int dtrState : DTR output state (0: off, 1: on)
1940 * int rtsState : RTS output state (0: off, 1: on)
1941 *
1942 *
1943 * Function 15: Setting the flow control of this port.
1944 * Syntax:
1945 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1946 * int txFlow,int xany);
1947 * int port : port number (0 - 127)
1948 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1949 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1950 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1951 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1952 * int xany : S/W XANY flow control (0: no, 1: yes)
1953 *
1954 *
1955 * Function 16: Get ths line status of this port
1956 * Syntax:
1957 * int MoxaPortLineStatus(int port);
1958 * int port : port number (0 - 127)
1959 *
1960 * return: Bit 0 - CTS state (0: off, 1: on)
1961 * Bit 1 - DSR state (0: off, 1: on)
1962 * Bit 2 - DCD state (0: off, 1: on)
1963 *
1964 *
1965 * Function 17: Check the DCD state has changed since the last read
1966 * of this function.
1967 * Syntax:
1968 * int MoxaPortDCDChange(int port);
1969 * int port : port number (0 - 127)
1970 *
1971 * return: 0 : no changed
1972 * 1 : DCD has changed
1973 *
1974 *
1975 * Function 18: Check ths current DCD state is ON or not.
1976 * Syntax:
1977 * int MoxaPortDCDON(int port);
1978 * int port : port number (0 - 127)
1979 *
1980 * return: 0 : DCD off
1981 * 1 : DCD on
1982 *
1983 *
1984 * Function 19: Flush the Rx/Tx buffer data of this port.
1985 * Syntax:
1986 * void MoxaPortFlushData(int port, int mode);
1987 * int port : port number (0 - 127)
1988 * int mode
1989 * 0 : flush the Rx buffer
1990 * 1 : flush the Tx buffer
1991 * 2 : flush the Rx and Tx buffer
1992 *
1993 *
1994 * Function 20: Write data.
1995 * Syntax:
1996 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
1997 * int port : port number (0 - 127)
1998 * unsigned char * buffer : pointer to write data buffer.
1999 * int length : write data length
2000 *
2001 * return: 0 - length : real write data length
2002 *
2003 *
2004 * Function 21: Read data.
2005 * Syntax:
2006 * int MoxaPortReadData(int port, unsigned char * buffer, int length);
2007 * int port : port number (0 - 127)
2008 * unsigned char * buffer : pointer to read data buffer.
2009 * int length : read data buffer length
2010 *
2011 * return: 0 - length : real read data length
2012 *
2013 *
2014 * Function 22: Get the Tx buffer size of this port
2015 * Syntax:
2016 * int MoxaPortTxBufSize(int port);
2017 * int port : port number (0 - 127)
2018 *
2019 * return: .. : Tx buffer size
2020 *
2021 *
2022 * Function 23: Get the Rx buffer size of this port
2023 * Syntax:
2024 * int MoxaPortRxBufSize(int port);
2025 * int port : port number (0 - 127)
2026 *
2027 * return: .. : Rx buffer size
2028 *
2029 *
2030 * Function 24: Get the Tx buffer current queued data bytes
2031 * Syntax:
2032 * int MoxaPortTxQueue(int port);
2033 * int port : port number (0 - 127)
2034 *
2035 * return: .. : Tx buffer current queued data bytes
2036 *
2037 *
2038 * Function 25: Get the Tx buffer current free space
2039 * Syntax:
2040 * int MoxaPortTxFree(int port);
2041 * int port : port number (0 - 127)
2042 *
2043 * return: .. : Tx buffer current free space
2044 *
2045 *
2046 * Function 26: Get the Rx buffer current queued data bytes
2047 * Syntax:
2048 * int MoxaPortRxQueue(int port);
2049 * int port : port number (0 - 127)
2050 *
2051 * return: .. : Rx buffer current queued data bytes
2052 *
2053 *
2054 * Function 27: Get the Rx buffer current free space
2055 * Syntax:
2056 * int MoxaPortRxFree(int port);
2057 * int port : port number (0 - 127)
2058 *
2059 * return: .. : Rx buffer current free space
2060 *
2061 *
2062 * Function 28: Disable port data transmission.
2063 * Syntax:
2064 * void MoxaPortTxDisable(int port);
2065 * int port : port number (0 - 127)
2066 *
2067 *
2068 * Function 29: Enable port data transmission.
2069 * Syntax:
2070 * void MoxaPortTxEnable(int port);
2071 * int port : port number (0 - 127)
2072 *
2073 *
2074 * Function 30: Get the received BREAK signal count.
2075 * Syntax:
2076 * int MoxaPortGetBrkCnt(int port);
2077 * int port : port number (0 - 127)
2078 *
2079 * return: 0 - .. : BREAK signal count
2080 *
2081 *
2082 * Function 31: Get the received BREAK signal count and reset it.
2083 * Syntax:
2084 * int MoxaPortResetBrkCnt(int port);
2085 * int port : port number (0 - 127)
2086 *
2087 * return: 0 - .. : BREAK signal count
2088 *
2089 *
2090 * Function 32: Set the S/W flow control new XON/XOFF value, default
2091 * XON is 0x11 & XOFF is 0x13.
2092 * Syntax:
2093 * void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue);
2094 * int port : port number (0 - 127)
2095 * int xonValue : new XON value (0 - 255)
2096 * int xoffValue : new XOFF value (0 - 255)
2097 *
2098 *
2099 * Function 33: Check this port's transmission is hold by remote site
2100 * because the flow control.
2101 * Syntax:
2102 * int MoxaPortIsTxHold(int port);
2103 * int port : port number (0 - 127)
2104 *
2105 * return: 0 : normal
2106 * 1 : hold by remote site
2107 *
2108 *
2109 * Function 34: Send out a BREAK signal.
2110 * Syntax:
2111 * void MoxaPortSendBreak(int port, int ms100);
2112 * int port : port number (0 - 127)
2113 * int ms100 : break signal time interval.
2114 * unit: 100 mini-second. if ms100 == 0, it will
2115 * send out a about 250 ms BREAK signal.
2116 *
2117 */
2118 int MoxaPortIsValid(int port)
2119 {
2120
2121 if (moxaCard == 0)
2122 return (0);
2123 if (moxaChkPort[port] == 0)
2124 return (0);
2125 return (1);
2126 }
2127
2128 void MoxaPortEnable(int port)
2129 {
2130 void __iomem *ofsAddr;
2131 int MoxaPortLineStatus(int);
2132 short lowwater = 512;
2133
2134 ofsAddr = moxaTableAddr[port];
2135 writew(lowwater, ofsAddr + Low_water);
2136 moxaBreakCnt[port] = 0;
2137 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2138 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2139 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
2140 } else {
2141 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
2142 }
2143
2144 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
2145 moxafunc(ofsAddr, FC_FlushQueue, 2);
2146
2147 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
2148 MoxaPortLineStatus(port);
2149 }
2150
2151 void MoxaPortDisable(int port)
2152 {
2153 void __iomem *ofsAddr = moxaTableAddr[port];
2154
2155 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
2156 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
2157 writew(0, ofsAddr + HostStat);
2158 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
2159 }
2160
2161 long MoxaPortGetMaxBaud(int port)
2162 {
2163 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2164 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
2165 return (460800L);
2166 else
2167 return (921600L);
2168 }
2169
2170
2171 long MoxaPortSetBaud(int port, long baud)
2172 {
2173 void __iomem *ofsAddr;
2174 long max, clock;
2175 unsigned int val;
2176
2177 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
2178 return (0);
2179 ofsAddr = moxaTableAddr[port];
2180 if (baud > max)
2181 baud = max;
2182 if (max == 38400L)
2183 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2184 else if (max == 57600L)
2185 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2186 else
2187 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2188 val = clock / baud;
2189 moxafunc(ofsAddr, FC_SetBaud, val);
2190 baud = clock / val;
2191 moxaCurBaud[port] = baud;
2192 return (baud);
2193 }
2194
2195 int MoxaPortSetTermio(int port, struct termios *termio)
2196 {
2197 void __iomem *ofsAddr;
2198 tcflag_t cflag;
2199 long baud;
2200 tcflag_t mode = 0;
2201
2202 if (moxaChkPort[port] == 0 || termio == 0)
2203 return (-1);
2204 ofsAddr = moxaTableAddr[port];
2205 cflag = termio->c_cflag; /* termio->c_cflag */
2206
2207 mode = termio->c_cflag & CSIZE;
2208 if (mode == CS5)
2209 mode = MX_CS5;
2210 else if (mode == CS6)
2211 mode = MX_CS6;
2212 else if (mode == CS7)
2213 mode = MX_CS7;
2214 else if (mode == CS8)
2215 mode = MX_CS8;
2216
2217 if (termio->c_cflag & CSTOPB) {
2218 if (mode == MX_CS5)
2219 mode |= MX_STOP15;
2220 else
2221 mode |= MX_STOP2;
2222 } else
2223 mode |= MX_STOP1;
2224
2225 if (termio->c_cflag & PARENB) {
2226 if (termio->c_cflag & PARODD)
2227 mode |= MX_PARODD;
2228 else
2229 mode |= MX_PAREVEN;
2230 } else
2231 mode |= MX_PARNONE;
2232
2233 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2234
2235 cflag &= (CBAUD | CBAUDEX);
2236 #ifndef B921600
2237 #define B921600 (B460800+1)
2238 #endif
2239 switch (cflag) {
2240 case B921600:
2241 baud = 921600L;
2242 break;
2243 case B460800:
2244 baud = 460800L;
2245 break;
2246 case B230400:
2247 baud = 230400L;
2248 break;
2249 case B115200:
2250 baud = 115200L;
2251 break;
2252 case B57600:
2253 baud = 57600L;
2254 break;
2255 case B38400:
2256 baud = 38400L;
2257 break;
2258 case B19200:
2259 baud = 19200L;
2260 break;
2261 case B9600:
2262 baud = 9600L;
2263 break;
2264 case B4800:
2265 baud = 4800L;
2266 break;
2267 case B2400:
2268 baud = 2400L;
2269 break;
2270 case B1800:
2271 baud = 1800L;
2272 break;
2273 case B1200:
2274 baud = 1200L;
2275 break;
2276 case B600:
2277 baud = 600L;
2278 break;
2279 case B300:
2280 baud = 300L;
2281 break;
2282 case B200:
2283 baud = 200L;
2284 break;
2285 case B150:
2286 baud = 150L;
2287 break;
2288 case B134:
2289 baud = 134L;
2290 break;
2291 case B110:
2292 baud = 110L;
2293 break;
2294 case B75:
2295 baud = 75L;
2296 break;
2297 case B50:
2298 baud = 50L;
2299 break;
2300 default:
2301 baud = 0;
2302 }
2303 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2304 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2305 if (baud == 921600L)
2306 return (-1);
2307 }
2308 MoxaPortSetBaud(port, baud);
2309
2310 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2311 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2312 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2313 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2314 wait_finish(ofsAddr);
2315
2316 }
2317 return (0);
2318 }
2319
2320 int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2321 {
2322
2323 if (!MoxaPortIsValid(port))
2324 return (-1);
2325 if (dtrState) {
2326 if (moxaLineCtrl[port] & DTR_ON)
2327 *dtrState = 1;
2328 else
2329 *dtrState = 0;
2330 }
2331 if (rtsState) {
2332 if (moxaLineCtrl[port] & RTS_ON)
2333 *rtsState = 1;
2334 else
2335 *rtsState = 0;
2336 }
2337 return (0);
2338 }
2339
2340 void MoxaPortLineCtrl(int port, int dtr, int rts)
2341 {
2342 void __iomem *ofsAddr;
2343 int mode;
2344
2345 ofsAddr = moxaTableAddr[port];
2346 mode = 0;
2347 if (dtr)
2348 mode |= DTR_ON;
2349 if (rts)
2350 mode |= RTS_ON;
2351 moxaLineCtrl[port] = mode;
2352 moxafunc(ofsAddr, FC_LineControl, mode);
2353 }
2354
2355 void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2356 {
2357 void __iomem *ofsAddr;
2358 int mode;
2359
2360 ofsAddr = moxaTableAddr[port];
2361 mode = 0;
2362 if (rts)
2363 mode |= RTS_FlowCtl;
2364 if (cts)
2365 mode |= CTS_FlowCtl;
2366 if (txflow)
2367 mode |= Tx_FlowCtl;
2368 if (rxflow)
2369 mode |= Rx_FlowCtl;
2370 if (txany)
2371 mode |= IXM_IXANY;
2372 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2373 }
2374
2375 int MoxaPortLineStatus(int port)
2376 {
2377 void __iomem *ofsAddr;
2378 int val;
2379
2380 ofsAddr = moxaTableAddr[port];
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 moxafunc(ofsAddr, FC_LineStatus, 0);
2384 val = readw(ofsAddr + FuncArg);
2385 } else {
2386 val = readw(ofsAddr + FlagStat) >> 4;
2387 }
2388 val &= 0x0B;
2389 if (val & 8) {
2390 val |= 4;
2391 if ((moxaDCDState[port] & DCD_oldstate) == 0)
2392 moxaDCDState[port] = (DCD_oldstate | DCD_changed);
2393 } else {
2394 if (moxaDCDState[port] & DCD_oldstate)
2395 moxaDCDState[port] = DCD_changed;
2396 }
2397 val &= 7;
2398 return (val);
2399 }
2400
2401 int MoxaPortDCDChange(int port)
2402 {
2403 int n;
2404
2405 if (moxaChkPort[port] == 0)
2406 return (0);
2407 n = moxaDCDState[port];
2408 moxaDCDState[port] &= ~DCD_changed;
2409 n &= DCD_changed;
2410 return (n);
2411 }
2412
2413 int MoxaPortDCDON(int port)
2414 {
2415 int n;
2416
2417 if (moxaChkPort[port] == 0)
2418 return (0);
2419 if (moxaDCDState[port] & DCD_oldstate)
2420 n = 1;
2421 else
2422 n = 0;
2423 return (n);
2424 }
2425
2426
2427 /*
2428 int MoxaDumpMem(int port, unsigned char * buffer, int len)
2429 {
2430 int i;
2431 unsigned long baseAddr,ofsAddr,ofs;
2432
2433 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2434 ofs = baseAddr + DynPage_addr + pageofs;
2435 if (len > 0x2000L)
2436 len = 0x2000L;
2437 for (i = 0; i < len; i++)
2438 buffer[i] = readb(ofs+i);
2439 }
2440 */
2441
2442
2443 int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2444 {
2445 int c, total, i;
2446 ushort tail;
2447 int cnt;
2448 ushort head, tx_mask, spage, epage;
2449 ushort pageno, pageofs, bufhead;
2450 void __iomem *baseAddr, *ofsAddr, *ofs;
2451
2452 ofsAddr = moxaTableAddr[port];
2453 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2454 tx_mask = readw(ofsAddr + TX_mask);
2455 spage = readw(ofsAddr + Page_txb);
2456 epage = readw(ofsAddr + EndPage_txb);
2457 tail = readw(ofsAddr + TXwptr);
2458 head = readw(ofsAddr + TXrptr);
2459 c = (head > tail) ? (head - tail - 1)
2460 : (head - tail + tx_mask);
2461 if (c > len)
2462 c = len;
2463 moxaLog.txcnt[port] += c;
2464 total = c;
2465 if (spage == epage) {
2466 bufhead = readw(ofsAddr + Ofs_txb);
2467 writew(spage, baseAddr + Control_reg);
2468 while (c > 0) {
2469 if (head > tail)
2470 len = head - tail - 1;
2471 else
2472 len = tx_mask + 1 - tail;
2473 len = (c > len) ? len : c;
2474 ofs = baseAddr + DynPage_addr + bufhead + tail;
2475 for (i = 0; i < len; i++)
2476 writeb(*buffer++, ofs + i);
2477 tail = (tail + len) & tx_mask;
2478 c -= len;
2479 }
2480 writew(tail, ofsAddr + TXwptr);
2481 } else {
2482 len = c;
2483 pageno = spage + (tail >> 13);
2484 pageofs = tail & Page_mask;
2485 do {
2486 cnt = Page_size - pageofs;
2487 if (cnt > c)
2488 cnt = c;
2489 c -= cnt;
2490 writeb(pageno, baseAddr + Control_reg);
2491 ofs = baseAddr + DynPage_addr + pageofs;
2492 for (i = 0; i < cnt; i++)
2493 writeb(*buffer++, ofs + i);
2494 if (c == 0) {
2495 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2496 break;
2497 }
2498 if (++pageno == epage)
2499 pageno = spage;
2500 pageofs = 0;
2501 } while (1);
2502 }
2503 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2504 return (total);
2505 }
2506
2507 int MoxaPortReadData(int port, unsigned char * buffer, int space)
2508 {
2509 register ushort head, pageofs;
2510 int i, count, cnt, len, total, remain;
2511 ushort tail, rx_mask, spage, epage;
2512 ushort pageno, bufhead;
2513 void __iomem *baseAddr, *ofsAddr, *ofs;
2514
2515 ofsAddr = moxaTableAddr[port];
2516 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2517 head = readw(ofsAddr + RXrptr);
2518 tail = readw(ofsAddr + RXwptr);
2519 rx_mask = readw(ofsAddr + RX_mask);
2520 spage = readw(ofsAddr + Page_rxb);
2521 epage = readw(ofsAddr + EndPage_rxb);
2522 count = (tail >= head) ? (tail - head)
2523 : (tail - head + rx_mask + 1);
2524 if (count == 0)
2525 return (0);
2526
2527 total = (space > count) ? count : space;
2528 remain = count - total;
2529 moxaLog.rxcnt[port] += total;
2530 count = total;
2531 if (spage == epage) {
2532 bufhead = readw(ofsAddr + Ofs_rxb);
2533 writew(spage, baseAddr + Control_reg);
2534 while (count > 0) {
2535 if (tail >= head)
2536 len = tail - head;
2537 else
2538 len = rx_mask + 1 - head;
2539 len = (count > len) ? len : count;
2540 ofs = baseAddr + DynPage_addr + bufhead + head;
2541 for (i = 0; i < len; i++)
2542 *buffer++ = readb(ofs + i);
2543 head = (head + len) & rx_mask;
2544 count -= len;
2545 }
2546 writew(head, ofsAddr + RXrptr);
2547 } else {
2548 len = count;
2549 pageno = spage + (head >> 13);
2550 pageofs = head & Page_mask;
2551 do {
2552 cnt = Page_size - pageofs;
2553 if (cnt > count)
2554 cnt = count;
2555 count -= cnt;
2556 writew(pageno, baseAddr + Control_reg);
2557 ofs = baseAddr + DynPage_addr + pageofs;
2558 for (i = 0; i < cnt; i++)
2559 *buffer++ = readb(ofs + i);
2560 if (count == 0) {
2561 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2562 break;
2563 }
2564 if (++pageno == epage)
2565 pageno = spage;
2566 pageofs = 0;
2567 } while (1);
2568 }
2569 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2570 moxaLowWaterChk = 1;
2571 moxaLowChkFlag[port] = 1;
2572 }
2573 return (total);
2574 }
2575
2576
2577 int MoxaPortTxQueue(int port)
2578 {
2579 void __iomem *ofsAddr;
2580 ushort rptr, wptr, mask;
2581 int len;
2582
2583 ofsAddr = moxaTableAddr[port];
2584 rptr = readw(ofsAddr + TXrptr);
2585 wptr = readw(ofsAddr + TXwptr);
2586 mask = readw(ofsAddr + TX_mask);
2587 len = (wptr - rptr) & mask;
2588 return (len);
2589 }
2590
2591 int MoxaPortTxFree(int port)
2592 {
2593 void __iomem *ofsAddr;
2594 ushort rptr, wptr, mask;
2595 int len;
2596
2597 ofsAddr = moxaTableAddr[port];
2598 rptr = readw(ofsAddr + TXrptr);
2599 wptr = readw(ofsAddr + TXwptr);
2600 mask = readw(ofsAddr + TX_mask);
2601 len = mask - ((wptr - rptr) & mask);
2602 return (len);
2603 }
2604
2605 int MoxaPortRxQueue(int port)
2606 {
2607 void __iomem *ofsAddr;
2608 ushort rptr, wptr, mask;
2609 int len;
2610
2611 ofsAddr = moxaTableAddr[port];
2612 rptr = readw(ofsAddr + RXrptr);
2613 wptr = readw(ofsAddr + RXwptr);
2614 mask = readw(ofsAddr + RX_mask);
2615 len = (wptr - rptr) & mask;
2616 return (len);
2617 }
2618
2619
2620 void MoxaPortTxDisable(int port)
2621 {
2622 void __iomem *ofsAddr;
2623
2624 ofsAddr = moxaTableAddr[port];
2625 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2626 }
2627
2628 void MoxaPortTxEnable(int port)
2629 {
2630 void __iomem *ofsAddr;
2631
2632 ofsAddr = moxaTableAddr[port];
2633 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2634 }
2635
2636
2637 int MoxaPortResetBrkCnt(int port)
2638 {
2639 ushort cnt;
2640 cnt = moxaBreakCnt[port];
2641 moxaBreakCnt[port] = 0;
2642 return (cnt);
2643 }
2644
2645
2646 void MoxaPortSendBreak(int port, int ms100)
2647 {
2648 void __iomem *ofsAddr;
2649
2650 ofsAddr = moxaTableAddr[port];
2651 if (ms100) {
2652 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2653 moxadelay(ms100 * (HZ / 10));
2654 } else {
2655 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2656 moxadelay(HZ / 4); /* 250 ms */
2657 }
2658 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2659 }
2660
2661 static int moxa_get_serial_info(struct moxa_str *info,
2662 struct serial_struct __user *retinfo)
2663 {
2664 struct serial_struct tmp;
2665
2666 memset(&tmp, 0, sizeof(tmp));
2667 tmp.type = info->type;
2668 tmp.line = info->port;
2669 tmp.port = 0;
2670 tmp.irq = 0;
2671 tmp.flags = info->asyncflags;
2672 tmp.baud_base = 921600;
2673 tmp.close_delay = info->close_delay;
2674 tmp.closing_wait = info->closing_wait;
2675 tmp.custom_divisor = 0;
2676 tmp.hub6 = 0;
2677 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2678 return -EFAULT;
2679 return (0);
2680 }
2681
2682
2683 static int moxa_set_serial_info(struct moxa_str *info,
2684 struct serial_struct __user *new_info)
2685 {
2686 struct serial_struct new_serial;
2687
2688 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2689 return -EFAULT;
2690
2691 if ((new_serial.irq != 0) ||
2692 (new_serial.port != 0) ||
2693 // (new_serial.type != info->type) ||
2694 (new_serial.custom_divisor != 0) ||
2695 (new_serial.baud_base != 921600))
2696 return (-EPERM);
2697
2698 if (!capable(CAP_SYS_ADMIN)) {
2699 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2700 (info->asyncflags & ~ASYNC_USR_MASK)))
2701 return (-EPERM);
2702 } else {
2703 info->close_delay = new_serial.close_delay * HZ / 100;
2704 info->closing_wait = new_serial.closing_wait * HZ / 100;
2705 }
2706
2707 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2708 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2709
2710 if (new_serial.type == PORT_16550A) {
2711 MoxaSetFifo(info->port, 1);
2712 } else {
2713 MoxaSetFifo(info->port, 0);
2714 }
2715
2716 info->type = new_serial.type;
2717 return (0);
2718 }
2719
2720
2721
2722 /*****************************************************************************
2723 * Static local functions: *
2724 *****************************************************************************/
2725 /*
2726 * moxadelay - delays a specified number ticks
2727 */
2728 static void moxadelay(int tick)
2729 {
2730 unsigned long st, et;
2731
2732 st = jiffies;
2733 et = st + tick;
2734 while (time_before(jiffies, et));
2735 }
2736
2737 static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
2738 {
2739
2740 writew(arg, ofsAddr + FuncArg);
2741 writew(cmd, ofsAddr + FuncCode);
2742 wait_finish(ofsAddr);
2743 }
2744
2745 static void wait_finish(void __iomem *ofsAddr)
2746 {
2747 unsigned long i, j;
2748
2749 i = jiffies;
2750 while (readw(ofsAddr + FuncCode) != 0) {
2751 j = jiffies;
2752 if ((j - i) > moxaFuncTout) {
2753 return;
2754 }
2755 }
2756 }
2757
2758 static void low_water_check(void __iomem *ofsAddr)
2759 {
2760 int len;
2761 ushort rptr, wptr, mask;
2762
2763 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2764 rptr = readw(ofsAddr + RXrptr);
2765 wptr = readw(ofsAddr + RXwptr);
2766 mask = readw(ofsAddr + RX_mask);
2767 len = (wptr - rptr) & mask;
2768 if (len <= Low_water)
2769 moxafunc(ofsAddr, FC_SendXon, 0);
2770 }
2771 }
2772
2773 static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2774 {
2775 void __iomem *baseAddr;
2776 int i;
2777
2778 if(copy_from_user(moxaBuff, tmp, len))
2779 return -EFAULT;
2780 baseAddr = moxaBaseAddr[cardno];
2781 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2782 moxadelay(1); /* delay 10 ms */
2783 for (i = 0; i < 4096; i++)
2784 writeb(0, baseAddr + i); /* clear fix page */
2785 for (i = 0; i < len; i++)
2786 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2787 writeb(0, baseAddr + Control_reg); /* restart */
2788 return (0);
2789 }
2790
2791 static int moxafindcard(int cardno)
2792 {
2793 void __iomem *baseAddr;
2794 ushort tmp;
2795
2796 baseAddr = moxaBaseAddr[cardno];
2797 switch (moxa_boards[cardno].boardType) {
2798 case MOXA_BOARD_C218_ISA:
2799 case MOXA_BOARD_C218_PCI:
2800 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2801 return (-1);
2802 }
2803 break;
2804 case MOXA_BOARD_CP204J:
2805 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2806 return (-1);
2807 }
2808 break;
2809 default:
2810 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2811 return (-1);
2812 }
2813 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2814 return (-2);
2815 }
2816 }
2817 return (0);
2818 }
2819
2820 static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2821 {
2822 void __iomem *baseAddr;
2823 int i;
2824
2825 if(len > sizeof(moxaBuff))
2826 return -EINVAL;
2827 if(copy_from_user(moxaBuff, tmp, len))
2828 return -EFAULT;
2829 baseAddr = moxaBaseAddr[cardno];
2830 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2831 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2832 for (i = 0; i < 7168; i++)
2833 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2834 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2835 for (i = 0; i < (len - 7168); i++)
2836 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2837 return (0);
2838 }
2839
2840 static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2841 {
2842 void __iomem *baseAddr, *ofsAddr;
2843 int retval, port, i;
2844
2845 if(copy_from_user(moxaBuff, tmp, len))
2846 return -EFAULT;
2847 baseAddr = moxaBaseAddr[cardno];
2848 switch (moxa_boards[cardno].boardType) {
2849 case MOXA_BOARD_C218_ISA:
2850 case MOXA_BOARD_C218_PCI:
2851 case MOXA_BOARD_CP204J:
2852 retval = moxaloadc218(cardno, baseAddr, len);
2853 if (retval)
2854 return (retval);
2855 port = cardno * MAX_PORTS_PER_BOARD;
2856 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2857 moxaChkPort[port] = 1;
2858 moxaCurBaud[port] = 9600L;
2859 moxaDCDState[port] = 0;
2860 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2861 ofsAddr = moxaTableAddr[port];
2862 writew(C218rx_mask, ofsAddr + RX_mask);
2863 writew(C218tx_mask, ofsAddr + TX_mask);
2864 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2865 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2866
2867 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2868 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2869
2870 }
2871 break;
2872 default:
2873 retval = moxaloadc320(cardno, baseAddr, len,
2874 &moxa_boards[cardno].numPorts);
2875 if (retval)
2876 return (retval);
2877 port = cardno * MAX_PORTS_PER_BOARD;
2878 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2879 moxaChkPort[port] = 1;
2880 moxaCurBaud[port] = 9600L;
2881 moxaDCDState[port] = 0;
2882 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2883 ofsAddr = moxaTableAddr[port];
2884 if (moxa_boards[cardno].numPorts == 8) {
2885 writew(C320p8rx_mask, ofsAddr + RX_mask);
2886 writew(C320p8tx_mask, ofsAddr + TX_mask);
2887 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2888 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2889 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2890 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2891
2892 } else if (moxa_boards[cardno].numPorts == 16) {
2893 writew(C320p16rx_mask, ofsAddr + RX_mask);
2894 writew(C320p16tx_mask, ofsAddr + TX_mask);
2895 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2896 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2897 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2898 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2899
2900 } else if (moxa_boards[cardno].numPorts == 24) {
2901 writew(C320p24rx_mask, ofsAddr + RX_mask);
2902 writew(C320p24tx_mask, ofsAddr + TX_mask);
2903 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2904 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2905 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2906 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2907 } else if (moxa_boards[cardno].numPorts == 32) {
2908 writew(C320p32rx_mask, ofsAddr + RX_mask);
2909 writew(C320p32tx_mask, ofsAddr + TX_mask);
2910 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2911 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2912 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2913 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2914 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2915 }
2916 }
2917 break;
2918 }
2919 return (0);
2920 }
2921
2922 static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
2923 {
2924 char retry;
2925 int i, j, len1, len2;
2926 ushort usum, *ptr, keycode;
2927
2928 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2929 keycode = CP204J_KeyCode;
2930 else
2931 keycode = C218_KeyCode;
2932 usum = 0;
2933 len1 = len >> 1;
2934 ptr = (ushort *) moxaBuff;
2935 for (i = 0; i < len1; i++)
2936 usum += *(ptr + i);
2937 retry = 0;
2938 do {
2939 len1 = len >> 1;
2940 j = 0;
2941 while (len1) {
2942 len2 = (len1 > 2048) ? 2048 : len1;
2943 len1 -= len2;
2944 for (i = 0; i < len2 << 1; i++)
2945 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2946 j += i;
2947
2948 writew(len2, baseAddr + C218DLoad_len);
2949 writew(0, baseAddr + C218_key);
2950 for (i = 0; i < 100; i++) {
2951 if (readw(baseAddr + C218_key) == keycode)
2952 break;
2953 moxadelay(1); /* delay 10 ms */
2954 }
2955 if (readw(baseAddr + C218_key) != keycode) {
2956 return (-1);
2957 }
2958 }
2959 writew(0, baseAddr + C218DLoad_len);
2960 writew(usum, baseAddr + C218check_sum);
2961 writew(0, baseAddr + C218_key);
2962 for (i = 0; i < 100; i++) {
2963 if (readw(baseAddr + C218_key) == keycode)
2964 break;
2965 moxadelay(1); /* delay 10 ms */
2966 }
2967 retry++;
2968 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2969 if (readb(baseAddr + C218chksum_ok) != 1) {
2970 return (-1);
2971 }
2972 writew(0, baseAddr + C218_key);
2973 for (i = 0; i < 100; i++) {
2974 if (readw(baseAddr + Magic_no) == Magic_code)
2975 break;
2976 moxadelay(1); /* delay 10 ms */
2977 }
2978 if (readw(baseAddr + Magic_no) != Magic_code) {
2979 return (-1);
2980 }
2981 writew(1, baseAddr + Disable_IRQ);
2982 writew(0, baseAddr + Magic_no);
2983 for (i = 0; i < 100; i++) {
2984 if (readw(baseAddr + Magic_no) == Magic_code)
2985 break;
2986 moxadelay(1); /* delay 10 ms */
2987 }
2988 if (readw(baseAddr + Magic_no) != Magic_code) {
2989 return (-1);
2990 }
2991 moxaCard = 1;
2992 moxaIntNdx[cardno] = baseAddr + IRQindex;
2993 moxaIntPend[cardno] = baseAddr + IRQpending;
2994 moxaIntTable[cardno] = baseAddr + IRQtable;
2995 return (0);
2996 }
2997
2998 static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
2999 {
3000 ushort usum;
3001 int i, j, wlen, len2, retry;
3002 ushort *uptr;
3003
3004 usum = 0;
3005 wlen = len >> 1;
3006 uptr = (ushort *) moxaBuff;
3007 for (i = 0; i < wlen; i++)
3008 usum += uptr[i];
3009 retry = 0;
3010 j = 0;
3011 do {
3012 while (wlen) {
3013 if (wlen > 2048)
3014 len2 = 2048;
3015 else
3016 len2 = wlen;
3017 wlen -= len2;
3018 len2 <<= 1;
3019 for (i = 0; i < len2; i++)
3020 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
3021 len2 >>= 1;
3022 j += i;
3023 writew(len2, baseAddr + C320DLoad_len);
3024 writew(0, baseAddr + C320_key);
3025 for (i = 0; i < 10; i++) {
3026 if (readw(baseAddr + C320_key) == C320_KeyCode)
3027 break;
3028 moxadelay(1);
3029 }
3030 if (readw(baseAddr + C320_key) != C320_KeyCode)
3031 return (-1);
3032 }
3033 writew(0, baseAddr + C320DLoad_len);
3034 writew(usum, baseAddr + C320check_sum);
3035 writew(0, baseAddr + C320_key);
3036 for (i = 0; i < 10; i++) {
3037 if (readw(baseAddr + C320_key) == C320_KeyCode)
3038 break;
3039 moxadelay(1);
3040 }
3041 retry++;
3042 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
3043 if (readb(baseAddr + C320chksum_ok) != 1)
3044 return (-1);
3045 writew(0, baseAddr + C320_key);
3046 for (i = 0; i < 600; i++) {
3047 if (readw(baseAddr + Magic_no) == Magic_code)
3048 break;
3049 moxadelay(1);
3050 }
3051 if (readw(baseAddr + Magic_no) != Magic_code)
3052 return (-100);
3053
3054 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
3055 writew(0x3800, baseAddr + TMS320_PORT1);
3056 writew(0x3900, baseAddr + TMS320_PORT2);
3057 writew(28499, baseAddr + TMS320_CLOCK);
3058 } else {
3059 writew(0x3200, baseAddr + TMS320_PORT1);
3060 writew(0x3400, baseAddr + TMS320_PORT2);
3061 writew(19999, baseAddr + TMS320_CLOCK);
3062 }
3063 writew(1, baseAddr + Disable_IRQ);
3064 writew(0, baseAddr + Magic_no);
3065 for (i = 0; i < 500; i++) {
3066 if (readw(baseAddr + Magic_no) == Magic_code)
3067 break;
3068 moxadelay(1);
3069 }
3070 if (readw(baseAddr + Magic_no) != Magic_code)
3071 return (-102);
3072
3073 j = readw(baseAddr + Module_cnt);
3074 if (j <= 0)
3075 return (-101);
3076 *numPorts = j * 8;
3077 writew(j, baseAddr + Module_no);
3078 writew(0, baseAddr + Magic_no);
3079 for (i = 0; i < 600; i++) {
3080 if (readw(baseAddr + Magic_no) == Magic_code)
3081 break;
3082 moxadelay(1);
3083 }
3084 if (readw(baseAddr + Magic_no) != Magic_code)
3085 return (-102);
3086 moxaCard = 1;
3087 moxaIntNdx[cardno] = baseAddr + IRQindex;
3088 moxaIntPend[cardno] = baseAddr + IRQpending;
3089 moxaIntTable[cardno] = baseAddr + IRQtable;
3090 return (0);
3091 }
3092
3093 #if 0
3094 long MoxaPortGetCurBaud(int port)
3095 {
3096
3097 if (moxaChkPort[port] == 0)
3098 return (0);
3099 return (moxaCurBaud[port]);
3100 }
3101 #endif /* 0 */
3102
3103 static void MoxaSetFifo(int port, int enable)
3104 {
3105 void __iomem *ofsAddr = moxaTableAddr[port];
3106
3107 if (!enable) {
3108 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
3109 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
3110 } else {
3111 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
3112 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
3113 }
3114 }
3115
3116 #if 0
3117 int MoxaPortSetMode(int port, int databits, int stopbits, int parity)
3118 {
3119 void __iomem *ofsAddr;
3120 int val;
3121
3122 val = 0;
3123 switch (databits) {
3124 case 5:
3125 val |= 0;
3126 break;
3127 case 6:
3128 val |= 1;
3129 break;
3130 case 7:
3131 val |= 2;
3132 break;
3133 case 8:
3134 val |= 3;
3135 break;
3136 default:
3137 return (-1);
3138 }
3139 switch (stopbits) {
3140 case 0:
3141 val |= 0;
3142 break; /* stop bits 1.5 */
3143 case 1:
3144 val |= 0;
3145 break;
3146 case 2:
3147 val |= 4;
3148 break;
3149 default:
3150 return (-1);
3151 }
3152 switch (parity) {
3153 case 0:
3154 val |= 0x00;
3155 break; /* None */
3156 case 1:
3157 val |= 0x08;
3158 break; /* Odd */
3159 case 2:
3160 val |= 0x18;
3161 break; /* Even */
3162 case 3:
3163 val |= 0x28;
3164 break; /* Mark */
3165 case 4:
3166 val |= 0x38;
3167 break; /* Space */
3168 default:
3169 return (-1);
3170 }
3171 ofsAddr = moxaTableAddr[port];
3172 moxafunc(ofsAddr, FC_SetMode, val);
3173 return (0);
3174 }
3175
3176 int MoxaPortTxBufSize(int port)
3177 {
3178 void __iomem *ofsAddr;
3179 int size;
3180
3181 ofsAddr = moxaTableAddr[port];
3182 size = readw(ofsAddr + TX_mask);
3183 return (size);
3184 }
3185
3186 int MoxaPortRxBufSize(int port)
3187 {
3188 void __iomem *ofsAddr;
3189 int size;
3190
3191 ofsAddr = moxaTableAddr[port];
3192 size = readw(ofsAddr + RX_mask);
3193 return (size);
3194 }
3195
3196 int MoxaPortRxFree(int port)
3197 {
3198 void __iomem *ofsAddr;
3199 ushort rptr, wptr, mask;
3200 int len;
3201
3202 ofsAddr = moxaTableAddr[port];
3203 rptr = readw(ofsAddr + RXrptr);
3204 wptr = readw(ofsAddr + RXwptr);
3205 mask = readw(ofsAddr + RX_mask);
3206 len = mask - ((wptr - rptr) & mask);
3207 return (len);
3208 }
3209 int MoxaPortGetBrkCnt(int port)
3210 {
3211 return (moxaBreakCnt[port]);
3212 }
3213
3214 void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue)
3215 {
3216 void __iomem *ofsAddr;
3217
3218 ofsAddr = moxaTableAddr[port];
3219 writew(xonValue, ofsAddr + FuncArg);
3220 writew(xoffValue, ofsAddr + FuncArg1);
3221 writew(FC_SetXonXoff, ofsAddr + FuncCode);
3222 wait_finish(ofsAddr);
3223 }
3224
3225 int MoxaPortIsTxHold(int port)
3226 {
3227 void __iomem *ofsAddr;
3228 int val;
3229
3230 ofsAddr = moxaTableAddr[port];
3231 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
3232 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
3233 moxafunc(ofsAddr, FC_GetCCSR, 0);
3234 val = readw(ofsAddr + FuncArg);
3235 if (val & 0x04)
3236 return (1);
3237 } else {
3238 if (readw(ofsAddr + FlagStat) & Tx_flowOff)
3239 return (1);
3240 }
3241 return (0);
3242 }
3243 #endif
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