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1da177e4
LT		 1/*****************************************************************************/
2/*
3 * moxa.c -- MOXA Intellio family multiport serial driver.
4 *
5 * Copyright (C) 1999-2000 Moxa Technologies ([email protected]).
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
1da177e4
LT		 32#include <linux/module.h>
33#include <linux/types.h>
34#include <linux/mm.h>
35#include <linux/ioport.h>
36#include <linux/errno.h>
37#include <linux/signal.h>
38#include <linux/sched.h>
39#include <linux/timer.h>
40#include <linux/interrupt.h>
41#include <linux/tty.h>
42#include <linux/tty_flip.h>
43#include <linux/major.h>
44#include <linux/string.h>
45#include <linux/fcntl.h>
46#include <linux/ptrace.h>
47#include <linux/serial.h>
48#include <linux/tty_driver.h>
49#include <linux/delay.h>
50#include <linux/pci.h>
51#include <linux/init.h>
52#include <linux/bitops.h>
53
54#include <asm/system.h>
55#include <asm/io.h>
56#include <asm/uaccess.h>
57
58#define MOXA_VERSION "5.1k"
59
60#define MOXAMAJOR 172
61#define MOXACUMAJOR 173
62
63#define put_to_user(arg1, arg2) put_user(arg1, (unsigned long *)arg2)
64#define get_from_user(arg1, arg2) get_user(arg1, (unsigned int *)arg2)
65
66#define MAX_BOARDS 4 /* Don't change this value */
67#define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
68#define MAX_PORTS 128 /* Don't change this value */
69
70/*
71 * Define the Moxa PCI vendor and device IDs.
72 */
73#define MOXA_BUS_TYPE_ISA 0
74#define MOXA_BUS_TYPE_PCI 1
75
76#ifndef PCI_VENDOR_ID_MOXA
77#define PCI_VENDOR_ID_MOXA 0x1393
78#endif
79#ifndef PCI_DEVICE_ID_CP204J
80#define PCI_DEVICE_ID_CP204J 0x2040
81#endif
82#ifndef PCI_DEVICE_ID_C218
83#define PCI_DEVICE_ID_C218 0x2180
84#endif
85#ifndef PCI_DEVICE_ID_C320
86#define PCI_DEVICE_ID_C320 0x3200
87#endif
88
89enum {
90 MOXA_BOARD_C218_PCI = 1,
91 MOXA_BOARD_C218_ISA,
92 MOXA_BOARD_C320_PCI,
93 MOXA_BOARD_C320_ISA,
94 MOXA_BOARD_CP204J,
95};
96
97static char *moxa_brdname[] =
98{
99 "C218 Turbo PCI series",
100 "C218 Turbo ISA series",
101 "C320 Turbo PCI series",
102 "C320 Turbo ISA series",
103 "CP-204J series",
104};
105
106#ifdef CONFIG_PCI
107static struct pci_device_id moxa_pcibrds[] = {
108 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C218, PCI_ANY_ID, PCI_ANY_ID,
109 0, 0, MOXA_BOARD_C218_PCI },
110 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C320, PCI_ANY_ID, PCI_ANY_ID,
111 0, 0, MOXA_BOARD_C320_PCI },
112 { PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_CP204J, PCI_ANY_ID, PCI_ANY_ID,
113 0, 0, MOXA_BOARD_CP204J },
114 { 0 }
115};
116MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
117#endif /* CONFIG_PCI */
118
119typedef struct _moxa_isa_board_conf {
120 int boardType;
121 int numPorts;
122 unsigned long baseAddr;
123} moxa_isa_board_conf;
124
125static moxa_isa_board_conf moxa_isa_boards[] =
126{
127/* {MOXA_BOARD_C218_ISA,8,0xDC000}, */
128};
129
130typedef struct _moxa_pci_devinfo {
131 ushort busNum;
132 ushort devNum;
86fbf148 133 struct pci_dev *pdev;
1da177e4
LT		 134} moxa_pci_devinfo;
135
136typedef 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
144static moxa_board_conf moxa_boards[MAX_BOARDS];
145static void __iomem *moxaBaseAddr[MAX_BOARDS];
01cfaf0d 146static int loadstat[MAX_BOARDS];
1da177e4
LT		 147
148struct moxa_str {
149 int type;
150 int port;
151 int close_delay;
152 unsigned short closing_wait;
153 int count;
154 int blocked_open;
155 long event; /* long req'd for set_bit --RR */
156 int asyncflags;
157 unsigned long statusflags;
158 struct tty_struct *tty;
159 int cflag;
160 wait_queue_head_t open_wait;
161 wait_queue_head_t close_wait;
162 struct work_struct tqueue;
163};
164
165struct mxser_mstatus {
166 tcflag_t cflag;
167 int cts;
168 int dsr;
169 int ri;
170 int dcd;
171};
172
173static struct mxser_mstatus GMStatus[MAX_PORTS];
174
175/* statusflags */
176#define TXSTOPPED 0x1
177#define LOWWAIT 0x2
178#define EMPTYWAIT 0x4
179#define THROTTLE 0x8
180
181/* event */
182#define MOXA_EVENT_HANGUP 1
183
184#define SERIAL_DO_RESTART
185
186
187#define SERIAL_TYPE_NORMAL 1
188
189#define WAKEUP_CHARS 256
190
191#define PORTNO(x) ((x)->index)
192
193static int verbose = 0;
194static int ttymajor = MOXAMAJOR;
195/* Variables for insmod */
196#ifdef MODULE
197static int baseaddr[] = {0, 0, 0, 0};
198static int type[] = {0, 0, 0, 0};
199static int numports[] = {0, 0, 0, 0};
200#endif
201
202MODULE_AUTHOR("William Chen");
203MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
204MODULE_LICENSE("GPL");
205#ifdef MODULE
206module_param_array(type, int, NULL, 0);
207module_param_array(baseaddr, int, NULL, 0);
208module_param_array(numports, int, NULL, 0);
209#endif
210module_param(ttymajor, int, 0);
211module_param(verbose, bool, 0644);
212
213static struct tty_driver *moxaDriver;
214static struct moxa_str moxaChannels[MAX_PORTS];
215static unsigned char *moxaXmitBuff;
216static int moxaTimer_on;
217static struct timer_list moxaTimer;
218static int moxaEmptyTimer_on[MAX_PORTS];
219static struct timer_list moxaEmptyTimer[MAX_PORTS];
220static struct semaphore moxaBuffSem;
221
222/*
223 * static functions:
224 */
c4028958 225static void do_moxa_softint(struct work_struct *);
1da177e4
LT		 226static int moxa_open(struct tty_struct *, struct file *);
227static void moxa_close(struct tty_struct *, struct file *);
228static int moxa_write(struct tty_struct *, const unsigned char *, int);
229static int moxa_write_room(struct tty_struct *);
230static void moxa_flush_buffer(struct tty_struct *);
231static int moxa_chars_in_buffer(struct tty_struct *);
232static void moxa_flush_chars(struct tty_struct *);
233static void moxa_put_char(struct tty_struct *, unsigned char);
234static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
235static void moxa_throttle(struct tty_struct *);
236static void moxa_unthrottle(struct tty_struct *);
606d099c 237static void moxa_set_termios(struct tty_struct *, struct ktermios *);
1da177e4
LT		 238static void moxa_stop(struct tty_struct *);
239static void moxa_start(struct tty_struct *);
240static void moxa_hangup(struct tty_struct *);
241static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
242static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
243 unsigned int set, unsigned int clear);
244static void moxa_poll(unsigned long);
245static void set_tty_param(struct tty_struct *);
246static int block_till_ready(struct tty_struct *, struct file *,
247 struct moxa_str *);
248static void setup_empty_event(struct tty_struct *);
249static void check_xmit_empty(unsigned long);
250static void shut_down(struct moxa_str *);
251static void receive_data(struct moxa_str *);
252/*
253 * moxa board interface functions:
254 */
255static void MoxaDriverInit(void);
256static int MoxaDriverIoctl(unsigned int, unsigned long, int);
257static int MoxaDriverPoll(void);
258static int MoxaPortsOfCard(int);
259static int MoxaPortIsValid(int);
260static void MoxaPortEnable(int);
261static void MoxaPortDisable(int);
262static long MoxaPortGetMaxBaud(int);
263static long MoxaPortSetBaud(int, long);
606d099c 264static int MoxaPortSetTermio(int, struct ktermios *, speed_t);
1da177e4
LT		 265static int MoxaPortGetLineOut(int, int *, int *);
266static void MoxaPortLineCtrl(int, int, int);
267static void MoxaPortFlowCtrl(int, int, int, int, int, int);
268static int MoxaPortLineStatus(int);
269static int MoxaPortDCDChange(int);
270static int MoxaPortDCDON(int);
271static void MoxaPortFlushData(int, int);
272static int MoxaPortWriteData(int, unsigned char *, int);
33f0f88f 273static int MoxaPortReadData(int, struct tty_struct *tty);
1da177e4
LT		 274static int MoxaPortTxQueue(int);
275static int MoxaPortRxQueue(int);
276static int MoxaPortTxFree(int);
277static void MoxaPortTxDisable(int);
278static void MoxaPortTxEnable(int);
279static int MoxaPortResetBrkCnt(int);
280static void MoxaPortSendBreak(int, int);
281static int moxa_get_serial_info(struct moxa_str *, struct serial_struct __user *);
282static int moxa_set_serial_info(struct moxa_str *, struct serial_struct __user *);
283static void MoxaSetFifo(int port, int enable);
284
b68e31d0 285static const struct tty_operations moxa_ops = {
1da177e4
LT		 286 .open = moxa_open,
287 .close = moxa_close,
288 .write = moxa_write,
289 .write_room = moxa_write_room,
290 .flush_buffer = moxa_flush_buffer,
291 .chars_in_buffer = moxa_chars_in_buffer,
292 .flush_chars = moxa_flush_chars,
293 .put_char = moxa_put_char,
294 .ioctl = moxa_ioctl,
295 .throttle = moxa_throttle,
296 .unthrottle = moxa_unthrottle,
297 .set_termios = moxa_set_termios,
298 .stop = moxa_stop,
299 .start = moxa_start,
300 .hangup = moxa_hangup,
301 .tiocmget = moxa_tiocmget,
302 .tiocmset = moxa_tiocmset,
303};
304
34af946a 305static DEFINE_SPINLOCK(moxa_lock);
33f0f88f 306
1da177e4
LT		 307#ifdef CONFIG_PCI
308static int moxa_get_PCI_conf(struct pci_dev *p, int board_type, moxa_board_conf * board)
309{
310 board->baseAddr = pci_resource_start (p, 2);
311 board->boardType = board_type;
312 switch (board_type) {
313 case MOXA_BOARD_C218_ISA:
314 case MOXA_BOARD_C218_PCI:
315 board->numPorts = 8;
316 break;
317
318 case MOXA_BOARD_CP204J:
319 board->numPorts = 4;
320 break;
321 default:
322 board->numPorts = 0;
323 break;
324 }
325 board->busType = MOXA_BUS_TYPE_PCI;
326 board->pciInfo.busNum = p->bus->number;
327 board->pciInfo.devNum = p->devfn >> 3;
86fbf148
JS		 328 board->pciInfo.pdev = p;
329 /* don't lose the reference in the next pci_get_device iteration */
330 pci_dev_get(p);
1da177e4
LT		 331
332 return (0);
333}
334#endif /* CONFIG_PCI */
335
336static int __init moxa_init(void)
337{
338 int i, numBoards;
339 struct moxa_str *ch;
340
341 printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION);
342 moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
343 if (!moxaDriver)
344 return -ENOMEM;
345
346 init_MUTEX(&moxaBuffSem);
347 moxaDriver->owner = THIS_MODULE;
9b4e3b13 348 moxaDriver->name = "ttyMX";
1da177e4
LT		 349 moxaDriver->major = ttymajor;
350 moxaDriver->minor_start = 0;
351 moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
352 moxaDriver->subtype = SERIAL_TYPE_NORMAL;
353 moxaDriver->init_termios = tty_std_termios;
354 moxaDriver->init_termios.c_iflag = 0;
355 moxaDriver->init_termios.c_oflag = 0;
356 moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
357 moxaDriver->init_termios.c_lflag = 0;
606d099c
AC		 358 moxaDriver->init_termios.c_ispeed = 9600;
359 moxaDriver->init_termios.c_ospeed = 9600;
1da177e4
LT		 360 moxaDriver->flags = TTY_DRIVER_REAL_RAW;
361 tty_set_operations(moxaDriver, &moxa_ops);
362
363 moxaXmitBuff = NULL;
364
365 for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) {
366 ch->type = PORT_16550A;
367 ch->port = i;
c4028958 368 INIT_WORK(&ch->tqueue, do_moxa_softint);
1da177e4
LT		 369 ch->tty = NULL;
370 ch->close_delay = 5 * HZ / 10;
371 ch->closing_wait = 30 * HZ;
372 ch->count = 0;
373 ch->blocked_open = 0;
374 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
375 init_waitqueue_head(&ch->open_wait);
376 init_waitqueue_head(&ch->close_wait);
377 }
378
379 for (i = 0; i < MAX_BOARDS; i++) {
380 moxa_boards[i].boardType = 0;
381 moxa_boards[i].numPorts = 0;
382 moxa_boards[i].baseAddr = 0;
383 moxa_boards[i].busType = 0;
384 moxa_boards[i].pciInfo.busNum = 0;
385 moxa_boards[i].pciInfo.devNum = 0;
386 }
387 MoxaDriverInit();
388 printk("Tty devices major number = %d\n", ttymajor);
389
390 if (tty_register_driver(moxaDriver)) {
391 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
392 put_tty_driver(moxaDriver);
393 return -1;
394 }
395 for (i = 0; i < MAX_PORTS; i++) {
396 init_timer(&moxaEmptyTimer[i]);
397 moxaEmptyTimer[i].function = check_xmit_empty;
398 moxaEmptyTimer[i].data = (unsigned long) & moxaChannels[i];
399 moxaEmptyTimer_on[i] = 0;
400 }
401
402 init_timer(&moxaTimer);
403 moxaTimer.function = moxa_poll;
404 moxaTimer.expires = jiffies + (HZ / 50);
405 moxaTimer_on = 1;
406 add_timer(&moxaTimer);
407
408 /* Find the boards defined in source code */
409 numBoards = 0;
410 for (i = 0; i < MAX_BOARDS; i++) {
411 if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) ||
412 (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) {
413 moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType;
414 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
415 moxa_boards[numBoards].numPorts = 8;
416 else
417 moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts;
418 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
419 moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr;
420 if (verbose)
421 printk("Board %2d: %s board(baseAddr=%lx)\n",
422 numBoards + 1,
423 moxa_brdname[moxa_boards[numBoards].boardType - 1],
424 moxa_boards[numBoards].baseAddr);
425 numBoards++;
426 }
427 }
428 /* Find the boards defined form module args. */
429#ifdef MODULE
430 for (i = 0; i < MAX_BOARDS; i++) {
431 if ((type[i] == MOXA_BOARD_C218_ISA) ||
432 (type[i] == MOXA_BOARD_C320_ISA)) {
433 if (verbose)
434 printk("Board %2d: %s board(baseAddr=%lx)\n",
435 numBoards + 1,
436 moxa_brdname[type[i] - 1],
437 (unsigned long) baseaddr[i]);
438 if (numBoards >= MAX_BOARDS) {
439 if (verbose)
440 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
441 continue;
442 }
443 moxa_boards[numBoards].boardType = type[i];
444 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
445 moxa_boards[numBoards].numPorts = 8;
446 else
447 moxa_boards[numBoards].numPorts = numports[i];
448 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
449 moxa_boards[numBoards].baseAddr = baseaddr[i];
450 numBoards++;
451 }
452 }
453#endif
454 /* Find PCI boards here */
455#ifdef CONFIG_PCI
456 {
457 struct pci_dev *p = NULL;
fe971071 458 int n = ARRAY_SIZE(moxa_pcibrds) - 1;
1da177e4
LT		 459 i = 0;
460 while (i < n) {
881a8c12 461 while ((p = pci_get_device(moxa_pcibrds[i].vendor, moxa_pcibrds[i].device, p))!=NULL)
1da177e4
LT		 462 {
463 if (pci_enable_device(p))
464 continue;
465 if (numBoards >= MAX_BOARDS) {
466 if (verbose)
467 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
468 } else {
469 moxa_get_PCI_conf(p, moxa_pcibrds[i].driver_data,
470 &moxa_boards[numBoards]);
471 numBoards++;
472 }
473 }
474 i++;
475 }
476 }
477#endif
478 for (i = 0; i < numBoards; i++) {
479 moxaBaseAddr[i] = ioremap((unsigned long) moxa_boards[i].baseAddr, 0x4000);
480 }
481
482 return (0);
483}
484
485static void __exit moxa_exit(void)
486{
487 int i;
488
489 if (verbose)
490 printk("Unloading module moxa ...\n");
491
492 if (moxaTimer_on)
493 del_timer(&moxaTimer);
494
495 for (i = 0; i < MAX_PORTS; i++)
496 if (moxaEmptyTimer_on[i])
497 del_timer(&moxaEmptyTimer[i]);
498
499 if (tty_unregister_driver(moxaDriver))
500 printk("Couldn't unregister MOXA Intellio family serial driver\n");
501 put_tty_driver(moxaDriver);
86fbf148 502
41bdabbb
AL		 503 for (i = 0; i < MAX_BOARDS; i++) {
504 if (moxaBaseAddr[i])
505 iounmap(moxaBaseAddr[i]);
86fbf148
JS		 506 if (moxa_boards[i].busType == MOXA_BUS_TYPE_PCI)
507 pci_dev_put(moxa_boards[i].pciInfo.pdev);
41bdabbb 508 }
86fbf148 509
1da177e4
LT		 510 if (verbose)
511 printk("Done\n");
512}
513
514module_init(moxa_init);
515module_exit(moxa_exit);
516
c4028958 517static void do_moxa_softint(struct work_struct *work)
1da177e4 518{
c4028958 519 struct moxa_str *ch = container_of(work, struct moxa_str, tqueue);
1da177e4
LT		 520 struct tty_struct *tty;
521
522 if (ch && (tty = ch->tty)) {
523 if (test_and_clear_bit(MOXA_EVENT_HANGUP, &ch->event)) {
524 tty_hangup(tty); /* FIXME: module removal race here - AKPM */
525 wake_up_interruptible(&ch->open_wait);
526 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
527 }
528 }
529}
530
531static int moxa_open(struct tty_struct *tty, struct file *filp)
532{
533 struct moxa_str *ch;
534 int port;
535 int retval;
536 unsigned long page;
537
538 port = PORTNO(tty);
539 if (port == MAX_PORTS) {
540 return (0);
541 }
542 if (!MoxaPortIsValid(port)) {
543 tty->driver_data = NULL;
544 return (-ENODEV);
545 }
546 down(&moxaBuffSem);
547 if (!moxaXmitBuff) {
548 page = get_zeroed_page(GFP_KERNEL);
549 if (!page) {
550 up(&moxaBuffSem);
551 return (-ENOMEM);
552 }
553 /* This test is guarded by the BuffSem so no longer needed
554 delete me in 2.5 */
555 if (moxaXmitBuff)
556 free_page(page);
557 else
558 moxaXmitBuff = (unsigned char *) page;
559 }
560 up(&moxaBuffSem);
561
562 ch = &moxaChannels[port];
563 ch->count++;
564 tty->driver_data = ch;
565 ch->tty = tty;
566 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
567 ch->statusflags = 0;
568 set_tty_param(tty);
569 MoxaPortLineCtrl(ch->port, 1, 1);
570 MoxaPortEnable(ch->port);
571 ch->asyncflags |= ASYNC_INITIALIZED;
572 }
573 retval = block_till_ready(tty, filp, ch);
574
575 moxa_unthrottle(tty);
576
577 if (ch->type == PORT_16550A) {
578 MoxaSetFifo(ch->port, 1);
579 } else {
580 MoxaSetFifo(ch->port, 0);
581 }
582
583 return (retval);
584}
585
586static void moxa_close(struct tty_struct *tty, struct file *filp)
587{
588 struct moxa_str *ch;
589 int port;
590
591 port = PORTNO(tty);
592 if (port == MAX_PORTS) {
593 return;
594 }
595 if (!MoxaPortIsValid(port)) {
596#ifdef SERIAL_DEBUG_CLOSE
597 printk("Invalid portno in moxa_close\n");
598#endif
599 tty->driver_data = NULL;
600 return;
601 }
602 if (tty->driver_data == NULL) {
603 return;
604 }
605 if (tty_hung_up_p(filp)) {
606 return;
607 }
608 ch = (struct moxa_str *) tty->driver_data;
609
610 if ((tty->count == 1) && (ch->count != 1)) {
611 printk("moxa_close: bad serial port count; tty->count is 1, "
612 "ch->count is %d\n", ch->count);
613 ch->count = 1;
614 }
615 if (--ch->count < 0) {
616 printk("moxa_close: bad serial port count, device=%s\n",
617 tty->name);
618 ch->count = 0;
619 }
620 if (ch->count) {
621 return;
622 }
623 ch->asyncflags |= ASYNC_CLOSING;
624
625 ch->cflag = tty->termios->c_cflag;
626 if (ch->asyncflags & ASYNC_INITIALIZED) {
627 setup_empty_event(tty);
628 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
629 moxaEmptyTimer_on[ch->port] = 0;
630 del_timer(&moxaEmptyTimer[ch->port]);
631 }
632 shut_down(ch);
633 MoxaPortFlushData(port, 2);
634
635 if (tty->driver->flush_buffer)
636 tty->driver->flush_buffer(tty);
637 tty_ldisc_flush(tty);
638
639 tty->closing = 0;
640 ch->event = 0;
641 ch->tty = NULL;
642 if (ch->blocked_open) {
643 if (ch->close_delay) {
644 msleep_interruptible(jiffies_to_msecs(ch->close_delay));
645 }
646 wake_up_interruptible(&ch->open_wait);
647 }
648 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
649 wake_up_interruptible(&ch->close_wait);
650}
651
652static int moxa_write(struct tty_struct *tty,
653 const unsigned char *buf, int count)
654{
655 struct moxa_str *ch;
656 int len, port;
657 unsigned long flags;
658
659 ch = (struct moxa_str *) tty->driver_data;
660 if (ch == NULL)
661 return (0);
662 port = ch->port;
33f0f88f
AC		 663
664 spin_lock_irqsave(&moxa_lock, flags);
1da177e4 665 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
33f0f88f 666 spin_unlock_irqrestore(&moxa_lock, flags);
1da177e4
LT		 667
668 /*********************************************
669 if ( !(ch->statusflags & LOWWAIT) &&
670 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
671 ************************************************/
672 ch->statusflags |= LOWWAIT;
673 return (len);
674}
675
676static int moxa_write_room(struct tty_struct *tty)
677{
678 struct moxa_str *ch;
679
680 if (tty->stopped)
681 return (0);
682 ch = (struct moxa_str *) tty->driver_data;
683 if (ch == NULL)
684 return (0);
685 return (MoxaPortTxFree(ch->port));
686}
687
688static void moxa_flush_buffer(struct tty_struct *tty)
689{
690 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
691
692 if (ch == NULL)
693 return;
694 MoxaPortFlushData(ch->port, 1);
695 tty_wakeup(tty);
696}
697
698static int moxa_chars_in_buffer(struct tty_struct *tty)
699{
700 int chars;
701 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
702
703 /*
704 * Sigh...I have to check if driver_data is NULL here, because
705 * if an open() fails, the TTY subsystem eventually calls
706 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
707 * routine. And since the open() failed, we return 0 here. TDJ
708 */
709 if (ch == NULL)
710 return (0);
711 chars = MoxaPortTxQueue(ch->port);
712 if (chars) {
713 /*
714 * Make it possible to wakeup anything waiting for output
715 * in tty_ioctl.c, etc.
716 */
717 if (!(ch->statusflags & EMPTYWAIT))
718 setup_empty_event(tty);
719 }
720 return (chars);
721}
722
723static void moxa_flush_chars(struct tty_struct *tty)
724{
725 /*
726 * Don't think I need this, because this is called to empty the TX
727 * buffer for the 16450, 16550, etc.
728 */
729}
730
731static void moxa_put_char(struct tty_struct *tty, unsigned char c)
732{
733 struct moxa_str *ch;
734 int port;
735 unsigned long flags;
736
737 ch = (struct moxa_str *) tty->driver_data;
738 if (ch == NULL)
739 return;
740 port = ch->port;
33f0f88f 741 spin_lock_irqsave(&moxa_lock, flags);
1da177e4
LT		 742 moxaXmitBuff[0] = c;
743 MoxaPortWriteData(port, moxaXmitBuff, 1);
33f0f88f 744 spin_unlock_irqrestore(&moxa_lock, flags);
1da177e4
LT		 745 /************************************************
746 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
747 *************************************************/
748 ch->statusflags |= LOWWAIT;
749}
750
751static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
752{
753 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
754 int port;
755 int flag = 0, dtr, rts;
756
757 port = PORTNO(tty);
758 if ((port != MAX_PORTS) && (!ch))
759 return (-EINVAL);
760
761 MoxaPortGetLineOut(ch->port, &dtr, &rts);
762 if (dtr)
763 flag |= TIOCM_DTR;
764 if (rts)
765 flag |= TIOCM_RTS;
766 dtr = MoxaPortLineStatus(ch->port);
767 if (dtr & 1)
768 flag |= TIOCM_CTS;
769 if (dtr & 2)
770 flag |= TIOCM_DSR;
771 if (dtr & 4)
772 flag |= TIOCM_CD;
773 return flag;
774}
775
776static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
777 unsigned int set, unsigned int clear)
778{
779 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
780 int port;
781 int dtr, rts;
782
783 port = PORTNO(tty);
784 if ((port != MAX_PORTS) && (!ch))
785 return (-EINVAL);
786
787 MoxaPortGetLineOut(ch->port, &dtr, &rts);
788 if (set & TIOCM_RTS)
789 rts = 1;
790 if (set & TIOCM_DTR)
791 dtr = 1;
792 if (clear & TIOCM_RTS)
793 rts = 0;
794 if (clear & TIOCM_DTR)
795 dtr = 0;
796 MoxaPortLineCtrl(ch->port, dtr, rts);
797 return 0;
798}
799
800static int moxa_ioctl(struct tty_struct *tty, struct file *file,
801 unsigned int cmd, unsigned long arg)
802{
803 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
804 register int port;
805 void __user *argp = (void __user *)arg;
806 int retval;
807
808 port = PORTNO(tty);
809 if ((port != MAX_PORTS) && (!ch))
810 return (-EINVAL);
811
812 switch (cmd) {
813 case TCSBRK: /* SVID version: non-zero arg --> no break */
814 retval = tty_check_change(tty);
815 if (retval)
816 return (retval);
817 setup_empty_event(tty);
818 tty_wait_until_sent(tty, 0);
819 if (!arg)
820 MoxaPortSendBreak(ch->port, 0);
821 return (0);
822 case TCSBRKP: /* support for POSIX tcsendbreak() */
823 retval = tty_check_change(tty);
824 if (retval)
825 return (retval);
826 setup_empty_event(tty);
827 tty_wait_until_sent(tty, 0);
828 MoxaPortSendBreak(ch->port, arg);
829 return (0);
830 case TIOCGSOFTCAR:
831 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
832 case TIOCSSOFTCAR:
833 if(get_user(retval, (unsigned long __user *) argp))
834 return -EFAULT;
835 arg = retval;
836 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
837 (arg ? CLOCAL : 0));
838 if (C_CLOCAL(tty))
839 ch->asyncflags &= ~ASYNC_CHECK_CD;
840 else
841 ch->asyncflags |= ASYNC_CHECK_CD;
842 return (0);
843 case TIOCGSERIAL:
844 return moxa_get_serial_info(ch, argp);
845
846 case TIOCSSERIAL:
847 return moxa_set_serial_info(ch, argp);
848 default:
849 retval = MoxaDriverIoctl(cmd, arg, port);
850 }
851 return (retval);
852}
853
854static void moxa_throttle(struct tty_struct *tty)
855{
856 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
857
858 ch->statusflags |= THROTTLE;
859}
860
861static void moxa_unthrottle(struct tty_struct *tty)
862{
863 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
864
865 ch->statusflags &= ~THROTTLE;
866}
867
868static void moxa_set_termios(struct tty_struct *tty,
606d099c 869 struct ktermios *old_termios)
1da177e4
LT		 870{
871 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
872
873 if (ch == NULL)
874 return;
875 set_tty_param(tty);
876 if (!(old_termios->c_cflag & CLOCAL) &&
877 (tty->termios->c_cflag & CLOCAL))
878 wake_up_interruptible(&ch->open_wait);
879}
880
881static void moxa_stop(struct tty_struct *tty)
882{
883 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
884
885 if (ch == NULL)
886 return;
887 MoxaPortTxDisable(ch->port);
888 ch->statusflags |= TXSTOPPED;
889}
890
891
892static void moxa_start(struct tty_struct *tty)
893{
894 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
895
896 if (ch == NULL)
897 return;
898
899 if (!(ch->statusflags & TXSTOPPED))
900 return;
901
902 MoxaPortTxEnable(ch->port);
903 ch->statusflags &= ~TXSTOPPED;
904}
905
906static void moxa_hangup(struct tty_struct *tty)
907{
908 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
909
910 moxa_flush_buffer(tty);
911 shut_down(ch);
912 ch->event = 0;
913 ch->count = 0;
914 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
915 ch->tty = NULL;
916 wake_up_interruptible(&ch->open_wait);
917}
918
919static void moxa_poll(unsigned long ignored)
920{
921 register int card;
922 struct moxa_str *ch;
923 struct tty_struct *tp;
924 int i, ports;
925
926 moxaTimer_on = 0;
927 del_timer(&moxaTimer);
928
929 if (MoxaDriverPoll() < 0) {
930 moxaTimer.function = moxa_poll;
931 moxaTimer.expires = jiffies + (HZ / 50);
932 moxaTimer_on = 1;
933 add_timer(&moxaTimer);
934 return;
935 }
936 for (card = 0; card < MAX_BOARDS; card++) {
937 if ((ports = MoxaPortsOfCard(card)) <= 0)
938 continue;
939 ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
940 for (i = 0; i < ports; i++, ch++) {
941 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
942 continue;
943 if (!(ch->statusflags & THROTTLE) &&
944 (MoxaPortRxQueue(ch->port) > 0))
945 receive_data(ch);
946 if ((tp = ch->tty) == 0)
947 continue;
948 if (ch->statusflags & LOWWAIT) {
949 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
950 if (!tp->stopped) {
951 ch->statusflags &= ~LOWWAIT;
952 tty_wakeup(tp);
953 }
954 }
955 }
956 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
957 tty_insert_flip_char(tp, 0, TTY_BREAK);
958 tty_schedule_flip(tp);
959 }
960 if (MoxaPortDCDChange(ch->port)) {
961 if (ch->asyncflags & ASYNC_CHECK_CD) {
962 if (MoxaPortDCDON(ch->port))
963 wake_up_interruptible(&ch->open_wait);
964 else {
965 set_bit(MOXA_EVENT_HANGUP, &ch->event);
966 schedule_work(&ch->tqueue);
967 }
968 }
969 }
970 }
971 }
972
973 moxaTimer.function = moxa_poll;
974 moxaTimer.expires = jiffies + (HZ / 50);
975 moxaTimer_on = 1;
976 add_timer(&moxaTimer);
977}
978
979/******************************************************************************/
980
981static void set_tty_param(struct tty_struct *tty)
982{
606d099c 983 register struct ktermios *ts;
1da177e4
LT		 984 struct moxa_str *ch;
985 int rts, cts, txflow, rxflow, xany;
986
987 ch = (struct moxa_str *) tty->driver_data;
988 ts = tty->termios;
989 if (ts->c_cflag & CLOCAL)
990 ch->asyncflags &= ~ASYNC_CHECK_CD;
991 else
992 ch->asyncflags |= ASYNC_CHECK_CD;
993 rts = cts = txflow = rxflow = xany = 0;
994 if (ts->c_cflag & CRTSCTS)
995 rts = cts = 1;
996 if (ts->c_iflag & IXON)
997 txflow = 1;
998 if (ts->c_iflag & IXOFF)
999 rxflow = 1;
1000 if (ts->c_iflag & IXANY)
1001 xany = 1;
1002 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
c7bce309 1003 MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty));
1da177e4
LT		 1004}
1005
1006static int block_till_ready(struct tty_struct *tty, struct file *filp,
1007 struct moxa_str *ch)
1008{
1009 DECLARE_WAITQUEUE(wait,current);
1010 unsigned long flags;
1011 int retval;
1012 int do_clocal = C_CLOCAL(tty);
1013
1014 /*
1015 * If the device is in the middle of being closed, then block
1016 * until it's done, and then try again.
1017 */
1018 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
1019 if (ch->asyncflags & ASYNC_CLOSING)
1020 interruptible_sleep_on(&ch->close_wait);
1021#ifdef SERIAL_DO_RESTART
1022 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1023 return (-EAGAIN);
1024 else
1025 return (-ERESTARTSYS);
1026#else
1027 return (-EAGAIN);
1028#endif
1029 }
1030 /*
1031 * If non-blocking mode is set, then make the check up front
1032 * and then exit.
1033 */
1034 if (filp->f_flags & O_NONBLOCK) {
1035 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1036 return (0);
1037 }
1038 /*
1039 * Block waiting for the carrier detect and the line to become free
1040 */
1041 retval = 0;
1042 add_wait_queue(&ch->open_wait, &wait);
1043#ifdef SERIAL_DEBUG_OPEN
1044 printk("block_til_ready before block: ttys%d, count = %d\n",
1045 ch->line, ch->count);
1046#endif
33f0f88f 1047 spin_lock_irqsave(&moxa_lock, flags);
1da177e4
LT		 1048 if (!tty_hung_up_p(filp))
1049 ch->count--;
1da177e4 1050 ch->blocked_open++;
33f0f88f
AC		 1051 spin_unlock_irqrestore(&moxa_lock, flags);
1052
1da177e4
LT		 1053 while (1) {
1054 set_current_state(TASK_INTERRUPTIBLE);
1055 if (tty_hung_up_p(filp) ||
1056 !(ch->asyncflags & ASYNC_INITIALIZED)) {
1057#ifdef SERIAL_DO_RESTART
1058 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
1059 retval = -EAGAIN;
1060 else
1061 retval = -ERESTARTSYS;
1062#else
1063 retval = -EAGAIN;
1064#endif
1065 break;
1066 }
1067 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
1068 MoxaPortDCDON(ch->port)))
1069 break;
1070
1071 if (signal_pending(current)) {
1072 retval = -ERESTARTSYS;
1073 break;
1074 }
1075 schedule();
1076 }
1077 set_current_state(TASK_RUNNING);
1078 remove_wait_queue(&ch->open_wait, &wait);
33f0f88f
AC		 1079
1080 spin_lock_irqsave(&moxa_lock, flags);
1da177e4
LT		 1081 if (!tty_hung_up_p(filp))
1082 ch->count++;
1083 ch->blocked_open--;
33f0f88f 1084 spin_unlock_irqrestore(&moxa_lock, flags);
1da177e4
LT		 1085#ifdef SERIAL_DEBUG_OPEN
1086 printk("block_til_ready after blocking: ttys%d, count = %d\n",
1087 ch->line, ch->count);
1088#endif
1089 if (retval)
1090 return (retval);
33f0f88f 1091 /* FIXME: review to see if we need to use set_bit on these */
1da177e4 1092 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
33f0f88f 1093 return 0;
1da177e4
LT		 1094}
1095
1096static void setup_empty_event(struct tty_struct *tty)
1097{
1098 struct moxa_str *ch = tty->driver_data;
1099 unsigned long flags;
1100
33f0f88f 1101 spin_lock_irqsave(&moxa_lock, flags);
1da177e4
LT		 1102 ch->statusflags |= EMPTYWAIT;
1103 moxaEmptyTimer_on[ch->port] = 0;
1104 del_timer(&moxaEmptyTimer[ch->port]);
1105 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1106 moxaEmptyTimer_on[ch->port] = 1;
1107 add_timer(&moxaEmptyTimer[ch->port]);
33f0f88f 1108 spin_unlock_irqrestore(&moxa_lock, flags);
1da177e4
LT		 1109}
1110
1111static void check_xmit_empty(unsigned long data)
1112{
1113 struct moxa_str *ch;
1114
1115 ch = (struct moxa_str *) data;
1116 moxaEmptyTimer_on[ch->port] = 0;
1117 del_timer(&moxaEmptyTimer[ch->port]);
1118 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1119 if (MoxaPortTxQueue(ch->port) == 0) {
1120 ch->statusflags &= ~EMPTYWAIT;
1121 tty_wakeup(ch->tty);
1122 return;
1123 }
1124 moxaEmptyTimer[ch->port].expires = jiffies + HZ;
1125 moxaEmptyTimer_on[ch->port] = 1;
1126 add_timer(&moxaEmptyTimer[ch->port]);
1127 } else
1128 ch->statusflags &= ~EMPTYWAIT;
1129}
1130
1131static void shut_down(struct moxa_str *ch)
1132{
1133 struct tty_struct *tp;
1134
1135 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1136 return;
1137
1138 tp = ch->tty;
1139
1140 MoxaPortDisable(ch->port);
1141
1142 /*
1143 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1144 */
1145 if (tp->termios->c_cflag & HUPCL)
1146 MoxaPortLineCtrl(ch->port, 0, 0);
1147
1148 ch->asyncflags &= ~ASYNC_INITIALIZED;
1149}
1150
1151static void receive_data(struct moxa_str *ch)
1152{
1153 struct tty_struct *tp;
606d099c 1154 struct ktermios *ts;
1da177e4
LT		 1155 unsigned long flags;
1156
1157 ts = NULL;
1158 tp = ch->tty;
1159 if (tp)
1160 ts = tp->termios;
1161 /**************************************************
1162 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1163 *****************************************************/
1164 if (!tp || !ts) {
1165 MoxaPortFlushData(ch->port, 0);
1166 return;
1167 }
33f0f88f
AC		 1168 spin_lock_irqsave(&moxa_lock, flags);
1169 MoxaPortReadData(ch->port, tp);
1170 spin_unlock_irqrestore(&moxa_lock, flags);
1171 tty_schedule_flip(tp);
1da177e4
LT		 1172}
1173
1174#define Magic_code 0x404
1175
1176/*
1177 * System Configuration
1178 */
1179/*
1180 * for C218 BIOS initialization
1181 */
1182#define C218_ConfBase 0x800
1183#define C218_status (C218_ConfBase + 0) /* BIOS running status */
1184#define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1185#define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1186#define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1187#define C218check_sum (C218_ConfBase + 8) /* BYTE */
1188#define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1189#define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1190#define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1191#define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1192#define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1193
1194#define C218_LoadBuf 0x0F00
1195#define C218_KeyCode 0x218
1196#define CP204J_KeyCode 0x204
1197
1198/*
1199 * for C320 BIOS initialization
1200 */
1201#define C320_ConfBase 0x800
1202#define C320_LoadBuf 0x0f00
1203#define STS_init 0x05 /* for C320_status */
1204
1205#define C320_status C320_ConfBase + 0 /* BIOS running status */
1206#define C320_diag C320_ConfBase + 2 /* diagnostic status */
1207#define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1208#define C320DLoad_len C320_ConfBase + 6 /* WORD */
1209#define C320check_sum C320_ConfBase + 8 /* WORD */
1210#define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1211#define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1212#define C320UART_no C320_ConfBase + 0x0e /* WORD */
1213
1214#define C320_KeyCode 0x320
1215
1216#define FixPage_addr 0x0000 /* starting addr of static page */
1217#define DynPage_addr 0x2000 /* starting addr of dynamic page */
1218#define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1219#define Control_reg 0x1ff0 /* select page and reset control */
1220#define HW_reset 0x80
1221
1222/*
1223 * Function Codes
1224 */
1225#define FC_CardReset 0x80
1226#define FC_ChannelReset 1 /* C320 firmware not supported */
1227#define FC_EnableCH 2
1228#define FC_DisableCH 3
1229#define FC_SetParam 4
1230#define FC_SetMode 5
1231#define FC_SetRate 6
1232#define FC_LineControl 7
1233#define FC_LineStatus 8
1234#define FC_XmitControl 9
1235#define FC_FlushQueue 10
1236#define FC_SendBreak 11
1237#define FC_StopBreak 12
1238#define FC_LoopbackON 13
1239#define FC_LoopbackOFF 14
1240#define FC_ClrIrqTable 15
1241#define FC_SendXon 16
1242#define FC_SetTermIrq 17 /* C320 firmware not supported */
1243#define FC_SetCntIrq 18 /* C320 firmware not supported */
1244#define FC_SetBreakIrq 19
1245#define FC_SetLineIrq 20
1246#define FC_SetFlowCtl 21
1247#define FC_GenIrq 22
1248#define FC_InCD180 23
1249#define FC_OutCD180 24
1250#define FC_InUARTreg 23
1251#define FC_OutUARTreg 24
1252#define FC_SetXonXoff 25
1253#define FC_OutCD180CCR 26
1254#define FC_ExtIQueue 27
1255#define FC_ExtOQueue 28
1256#define FC_ClrLineIrq 29
1257#define FC_HWFlowCtl 30
1258#define FC_GetClockRate 35
1259#define FC_SetBaud 36
1260#define FC_SetDataMode 41
1261#define FC_GetCCSR 43
1262#define FC_GetDataError 45
1263#define FC_RxControl 50
1264#define FC_ImmSend 51
1265#define FC_SetXonState 52
1266#define FC_SetXoffState 53
1267#define FC_SetRxFIFOTrig 54
1268#define FC_SetTxFIFOCnt 55
1269#define FC_UnixRate 56
1270#define FC_UnixResetTimer 57
1271
1272#define RxFIFOTrig1 0
1273#define RxFIFOTrig4 1
1274#define RxFIFOTrig8 2
1275#define RxFIFOTrig14 3
1276
1277/*
1278 * Dual-Ported RAM
1279 */
1280#define DRAM_global 0
1281#define INT_data (DRAM_global + 0)
1282#define Config_base (DRAM_global + 0x108)
1283
1284#define IRQindex (INT_data + 0)
1285#define IRQpending (INT_data + 4)
1286#define IRQtable (INT_data + 8)
1287
1288/*
1289 * Interrupt Status
1290 */
1291#define IntrRx 0x01 /* receiver data O.K. */
1292#define IntrTx 0x02 /* transmit buffer empty */
1293#define IntrFunc 0x04 /* function complete */
1294#define IntrBreak 0x08 /* received break */
1295#define IntrLine 0x10 /* line status change
1296 for transmitter */
1297#define IntrIntr 0x20 /* received INTR code */
1298#define IntrQuit 0x40 /* received QUIT code */
1299#define IntrEOF 0x80 /* received EOF code */
1300
1301#define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1302#define IntrTxTrigger 0x200 /* tx data count below trigger value */
1303
1304#define Magic_no (Config_base + 0)
1305#define Card_model_no (Config_base + 2)
1306#define Total_ports (Config_base + 4)
1307#define Module_cnt (Config_base + 8)
1308#define Module_no (Config_base + 10)
1309#define Timer_10ms (Config_base + 14)
1310#define Disable_IRQ (Config_base + 20)
1311#define TMS320_PORT1 (Config_base + 22)
1312#define TMS320_PORT2 (Config_base + 24)
1313#define TMS320_CLOCK (Config_base + 26)
1314
1315/*
1316 * DATA BUFFER in DRAM
1317 */
1318#define Extern_table 0x400 /* Base address of the external table
1319 (24 words * 64) total 3K bytes
1320 (24 words * 128) total 6K bytes */
1321#define Extern_size 0x60 /* 96 bytes */
1322#define RXrptr 0x00 /* read pointer for RX buffer */
1323#define RXwptr 0x02 /* write pointer for RX buffer */
1324#define TXrptr 0x04 /* read pointer for TX buffer */
1325#define TXwptr 0x06 /* write pointer for TX buffer */
1326#define HostStat 0x08 /* IRQ flag and general flag */
1327#define FlagStat 0x0A
1328#define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1329 /* x x x x | | | | */
1330 /* | | | + CTS flow */
1331 /* | | +--- RTS flow */
1332 /* | +------ TX Xon/Xoff */
1333 /* +--------- RX Xon/Xoff */
1334#define Break_cnt 0x0E /* received break count */
1335#define CD180TXirq 0x10 /* if non-0: enable TX irq */
1336#define RX_mask 0x12
1337#define TX_mask 0x14
1338#define Ofs_rxb 0x16
1339#define Ofs_txb 0x18
1340#define Page_rxb 0x1A
1341#define Page_txb 0x1C
1342#define EndPage_rxb 0x1E
1343#define EndPage_txb 0x20
1344#define Data_error 0x22
1345#define RxTrigger 0x28
1346#define TxTrigger 0x2a
1347
1348#define rRXwptr 0x34
1349#define Low_water 0x36
1350
1351#define FuncCode 0x40
1352#define FuncArg 0x42
1353#define FuncArg1 0x44
1354
1355#define C218rx_size 0x2000 /* 8K bytes */
1356#define C218tx_size 0x8000 /* 32K bytes */
1357
1358#define C218rx_mask (C218rx_size - 1)
1359#define C218tx_mask (C218tx_size - 1)
1360
1361#define C320p8rx_size 0x2000
1362#define C320p8tx_size 0x8000
1363#define C320p8rx_mask (C320p8rx_size - 1)
1364#define C320p8tx_mask (C320p8tx_size - 1)
1365
1366#define C320p16rx_size 0x2000
1367#define C320p16tx_size 0x4000
1368#define C320p16rx_mask (C320p16rx_size - 1)
1369#define C320p16tx_mask (C320p16tx_size - 1)
1370
1371#define C320p24rx_size 0x2000
1372#define C320p24tx_size 0x2000
1373#define C320p24rx_mask (C320p24rx_size - 1)
1374#define C320p24tx_mask (C320p24tx_size - 1)
1375
1376#define C320p32rx_size 0x1000
1377#define C320p32tx_size 0x1000
1378#define C320p32rx_mask (C320p32rx_size - 1)
1379#define C320p32tx_mask (C320p32tx_size - 1)
1380
1381#define Page_size 0x2000
1382#define Page_mask (Page_size - 1)
1383#define C218rx_spage 3
1384#define C218tx_spage 4
1385#define C218rx_pageno 1
1386#define C218tx_pageno 4
1387#define C218buf_pageno 5
1388
1389#define C320p8rx_spage 3
1390#define C320p8tx_spage 4
1391#define C320p8rx_pgno 1
1392#define C320p8tx_pgno 4
1393#define C320p8buf_pgno 5
1394
1395#define C320p16rx_spage 3
1396#define C320p16tx_spage 4
1397#define C320p16rx_pgno 1
1398#define C320p16tx_pgno 2
1399#define C320p16buf_pgno 3
1400
1401#define C320p24rx_spage 3
1402#define C320p24tx_spage 4
1403#define C320p24rx_pgno 1
1404#define C320p24tx_pgno 1
1405#define C320p24buf_pgno 2
1406
1407#define C320p32rx_spage 3
1408#define C320p32tx_ofs C320p32rx_size
1409#define C320p32tx_spage 3
1410#define C320p32buf_pgno 1
1411
1412/*
1413 * Host Status
1414 */
1415#define WakeupRx 0x01
1416#define WakeupTx 0x02
1417#define WakeupBreak 0x08
1418#define WakeupLine 0x10
1419#define WakeupIntr 0x20
1420#define WakeupQuit 0x40
1421#define WakeupEOF 0x80 /* used in VTIME control */
1422#define WakeupRxTrigger 0x100
1423#define WakeupTxTrigger 0x200
1424/*
1425 * Flag status
1426 */
1427#define Rx_over 0x01
1428#define Xoff_state 0x02
1429#define Tx_flowOff 0x04
1430#define Tx_enable 0x08
1431#define CTS_state 0x10
1432#define DSR_state 0x20
1433#define DCD_state 0x80
1434/*
1435 * FlowControl
1436 */
1437#define CTS_FlowCtl 1
1438#define RTS_FlowCtl 2
1439#define Tx_FlowCtl 4
1440#define Rx_FlowCtl 8
1441#define IXM_IXANY 0x10
1442
1443#define LowWater 128
1444
1445#define DTR_ON 1
1446#define RTS_ON 2
1447#define CTS_ON 1
1448#define DSR_ON 2
1449#define DCD_ON 8
1450
1451/* mode definition */
1452#define MX_CS8 0x03
1453#define MX_CS7 0x02
1454#define MX_CS6 0x01
1455#define MX_CS5 0x00
1456
1457#define MX_STOP1 0x00
1458#define MX_STOP15 0x04
1459#define MX_STOP2 0x08
1460
1461#define MX_PARNONE 0x00
1462#define MX_PAREVEN 0x40
1463#define MX_PARODD 0xC0
1464
1465/*
1466 * Query
1467 */
1468#define QueryPort MAX_PORTS
1469
1470
1471
1472struct mon_str {
1473 int tick;
1474 int rxcnt[MAX_PORTS];
1475 int txcnt[MAX_PORTS];
1476};
1477typedef struct mon_str mon_st;
1478
1479#define DCD_changed 0x01
1480#define DCD_oldstate 0x80
1481
1482static unsigned char moxaBuff[10240];
1483static void __iomem *moxaIntNdx[MAX_BOARDS];
1484static void __iomem *moxaIntPend[MAX_BOARDS];
1485static void __iomem *moxaIntTable[MAX_BOARDS];
1486static char moxaChkPort[MAX_PORTS];
1487static char moxaLineCtrl[MAX_PORTS];
1488static void __iomem *moxaTableAddr[MAX_PORTS];
1489static long moxaCurBaud[MAX_PORTS];
1490static char moxaDCDState[MAX_PORTS];
1491static char moxaLowChkFlag[MAX_PORTS];
1492static int moxaLowWaterChk;
1493static int moxaCard;
1494static mon_st moxaLog;
1495static int moxaFuncTout;
1496static ushort moxaBreakCnt[MAX_PORTS];
1497
1498static void moxadelay(int);
1499static void moxafunc(void __iomem *, int, ushort);
1500static void wait_finish(void __iomem *);
1501static void low_water_check(void __iomem *);
1502static int moxaloadbios(int, unsigned char __user *, int);
1503static int moxafindcard(int);
1504static int moxaload320b(int, unsigned char __user *, int);
1505static int moxaloadcode(int, unsigned char __user *, int);
1506static int moxaloadc218(int, void __iomem *, int);
1507static int moxaloadc320(int, void __iomem *, int, int *);
1508
1509/*****************************************************************************
1510 * Driver level functions: *
1511 * 1. MoxaDriverInit(void); *
1512 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1513 * 3. MoxaDriverPoll(void); *
1514 *****************************************************************************/
1515void MoxaDriverInit(void)
1516{
1517 int i;
1518
1519 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1520 moxaCard = 0;
1521 moxaLog.tick = 0;
1522 moxaLowWaterChk = 0;
1523 for (i = 0; i < MAX_PORTS; i++) {
1524 moxaChkPort[i] = 0;
1525 moxaLowChkFlag[i] = 0;
1526 moxaLineCtrl[i] = 0;
1527 moxaLog.rxcnt[i] = 0;
1528 moxaLog.txcnt[i] = 0;
1529 }
1530}
1531
1532#define MOXA 0x400
1533#define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1534#define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1535#define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1536#define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1537#define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1538#define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1539#define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1540#define MOXA_GETDATACOUNT (MOXA + 23)
1541#define MOXA_GET_IOQUEUE (MOXA + 27)
1542#define MOXA_FLUSH_QUEUE (MOXA + 28)
1543#define MOXA_GET_CONF (MOXA + 35) /* configuration */
1544#define MOXA_GET_MAJOR (MOXA + 63)
1545#define MOXA_GET_CUMAJOR (MOXA + 64)
1546#define MOXA_GETMSTATUS (MOXA + 65)
1547
1548
1549struct moxaq_str {
1550 int inq;
1551 int outq;
1552};
1553
1554struct dl_str {
1555 char __user *buf;
1556 int len;
1557 int cardno;
1558};
1559
1560static struct moxaq_str temp_queue[MAX_PORTS];
1561static struct dl_str dltmp;
1562
1563void MoxaPortFlushData(int port, int mode)
1564{
1565 void __iomem *ofsAddr;
1566 if ((mode < 0) || (mode > 2))
1567 return;
1568 ofsAddr = moxaTableAddr[port];
1569 moxafunc(ofsAddr, FC_FlushQueue, mode);
1570 if (mode != 1) {
1571 moxaLowChkFlag[port] = 0;
1572 low_water_check(ofsAddr);
1573 }
1574}
1575
1576int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1577{
1578 int i;
1579 int status;
1580 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1581 void __user *argp = (void __user *)arg;
1582
1583 if (port == QueryPort) {
1584 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1585 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1586 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1587 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1588 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1589 return (-EINVAL);
1590 }
1591 switch (cmd) {
1592 case MOXA_GET_CONF:
1593 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS * sizeof(moxa_board_conf)))
1594 return -EFAULT;
1595 return (0);
1596 case MOXA_INIT_DRIVER:
1597 if ((int) arg == 0x404)
1598 MoxaDriverInit();
1599 return (0);
1600 case MOXA_GETDATACOUNT:
1601 moxaLog.tick = jiffies;
1602 if(copy_to_user(argp, &moxaLog, sizeof(mon_st)))
1603 return -EFAULT;
1604 return (0);
1605 case MOXA_FLUSH_QUEUE:
1606 MoxaPortFlushData(port, arg);
1607 return (0);
1608 case MOXA_GET_IOQUEUE:
1609 for (i = 0; i < MAX_PORTS; i++) {
1610 if (moxaChkPort[i]) {
1611 temp_queue[i].inq = MoxaPortRxQueue(i);
1612 temp_queue[i].outq = MoxaPortTxQueue(i);
1613 }
1614 }
1615 if(copy_to_user(argp, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
1616 return -EFAULT;
1617 return (0);
1618 case MOXA_GET_OQUEUE:
1619 i = MoxaPortTxQueue(port);
1620 return put_user(i, (unsigned long __user *)argp);
1621 case MOXA_GET_IQUEUE:
1622 i = MoxaPortRxQueue(port);
1623 return put_user(i, (unsigned long __user *)argp);
1624 case MOXA_GET_MAJOR:
1625 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1626 return -EFAULT;
1627 return 0;
1628 case MOXA_GET_CUMAJOR:
1629 i = 0;
1630 if(copy_to_user(argp, &i, sizeof(int)))
1631 return -EFAULT;
1632 return 0;
1633 case MOXA_GETMSTATUS:
1634 for (i = 0; i < MAX_PORTS; i++) {
1635 GMStatus[i].ri = 0;
1636 GMStatus[i].dcd = 0;
1637 GMStatus[i].dsr = 0;
1638 GMStatus[i].cts = 0;
1639 if (!moxaChkPort[i]) {
1640 continue;
1641 } else {
1642 status = MoxaPortLineStatus(moxaChannels[i].port);
1643 if (status & 1)
1644 GMStatus[i].cts = 1;
1645 if (status & 2)
1646 GMStatus[i].dsr = 1;
1647 if (status & 4)
1648 GMStatus[i].dcd = 1;
1649 }
1650
1651 if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
1652 GMStatus[i].cflag = moxaChannels[i].cflag;
1653 else
1654 GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
1655 }
1656 if(copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
1657 return -EFAULT;
1658 return 0;
1659 default:
1660 return (-ENOIOCTLCMD);
1661 case MOXA_LOAD_BIOS:
1662 case MOXA_FIND_BOARD:
1663 case MOXA_LOAD_C320B:
1664 case MOXA_LOAD_CODE:
49cd619c
AC		 1665 if (!capable(CAP_SYS_RAWIO))
1666 return -EPERM;
1da177e4
LT		 1667 break;
1668 }
1669
1670 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1671 return -EFAULT;
1672 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
1673 return -EINVAL;
1674
1675 switch(cmd)
1676 {
1677 case MOXA_LOAD_BIOS:
1678 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1679 return (i);
1680 case MOXA_FIND_BOARD:
1681 return moxafindcard(dltmp.cardno);
1682 case MOXA_LOAD_C320B:
1683 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1684 default: /* to keep gcc happy */
1685 return (0);
1686 case MOXA_LOAD_CODE:
1687 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1688 if (i == -1)
1689 return (-EFAULT);
1690 return (i);
1691
1692 }
1693}
1694
1695int MoxaDriverPoll(void)
1696{
1697 register ushort temp;
1698 register int card;
1699 void __iomem *ofsAddr;
1700 void __iomem *ip;
1701 int port, p, ports;
1702
1703 if (moxaCard == 0)
1704 return (-1);
1705 for (card = 0; card < MAX_BOARDS; card++) {
01cfaf0d
DE		 1706 if (loadstat[card] == 0)
1707 continue;
1da177e4
LT		 1708 if ((ports = moxa_boards[card].numPorts) == 0)
1709 continue;
1710 if (readb(moxaIntPend[card]) == 0xff) {
1711 ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
1712 p = card * MAX_PORTS_PER_BOARD;
1713 ports <<= 1;
1714 for (port = 0; port < ports; port += 2, p++) {
1715 if ((temp = readw(ip + port)) != 0) {
1716 writew(0, ip + port);
1717 ofsAddr = moxaTableAddr[p];
1718 if (temp & IntrTx)
1719 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1720 if (temp & IntrBreak) {
1721 moxaBreakCnt[p]++;
1722 }
1723 if (temp & IntrLine) {
1724 if (readb(ofsAddr + FlagStat) & DCD_state) {
1725 if ((moxaDCDState[p] & DCD_oldstate) == 0)
1726 moxaDCDState[p] = (DCD_oldstate |
1727 DCD_changed);
1728 } else {
1729 if (moxaDCDState[p] & DCD_oldstate)
1730 moxaDCDState[p] = DCD_changed;
1731 }
1732 }
1733 }
1734 }
1735 writeb(0, moxaIntPend[card]);
1736 }
1737 if (moxaLowWaterChk) {
1738 p = card * MAX_PORTS_PER_BOARD;
1739 for (port = 0; port < ports; port++, p++) {
1740 if (moxaLowChkFlag[p]) {
1741 moxaLowChkFlag[p] = 0;
1742 ofsAddr = moxaTableAddr[p];
1743 low_water_check(ofsAddr);
1744 }
1745 }
1746 }
1747 }
1748 moxaLowWaterChk = 0;
1749 return (0);
1750}
1751
1752/*****************************************************************************
1753 * Card level function: *
1754 * 1. MoxaPortsOfCard(int cardno); *
1755 *****************************************************************************/
1756int MoxaPortsOfCard(int cardno)
1757{
1758
1759 if (moxa_boards[cardno].boardType == 0)
1760 return (0);
1761 return (moxa_boards[cardno].numPorts);
1762}
1763
1764/*****************************************************************************
1765 * Port level functions: *
1766 * 1. MoxaPortIsValid(int port); *
1767 * 2. MoxaPortEnable(int port); *
1768 * 3. MoxaPortDisable(int port); *
1769 * 4. MoxaPortGetMaxBaud(int port); *
1770 * 5. MoxaPortGetCurBaud(int port); *
1771 * 6. MoxaPortSetBaud(int port, long baud); *
1772 * 7. MoxaPortSetMode(int port, int databit, int stopbit, int parity); *
1773 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1774 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1775 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1776 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1777 * 12. MoxaPortLineStatus(int port); *
1778 * 13. MoxaPortDCDChange(int port); *
1779 * 14. MoxaPortDCDON(int port); *
1780 * 15. MoxaPortFlushData(int port, int mode); *
1781 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
33f0f88f 1782 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1da177e4
LT		 1783 * 18. MoxaPortTxBufSize(int port); *
1784 * 19. MoxaPortRxBufSize(int port); *
1785 * 20. MoxaPortTxQueue(int port); *
1786 * 21. MoxaPortTxFree(int port); *
1787 * 22. MoxaPortRxQueue(int port); *
1788 * 23. MoxaPortRxFree(int port); *
1789 * 24. MoxaPortTxDisable(int port); *
1790 * 25. MoxaPortTxEnable(int port); *
1791 * 26. MoxaPortGetBrkCnt(int port); *
1792 * 27. MoxaPortResetBrkCnt(int port); *
1793 * 28. MoxaPortSetXonXoff(int port, int xonValue, int xoffValue); *
1794 * 29. MoxaPortIsTxHold(int port); *
1795 * 30. MoxaPortSendBreak(int port, int ticks); *
1796 *****************************************************************************/
1797/*
1798 * Moxa Port Number Description:
1799 *
1800 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1801 * the port number using in MOXA driver functions will be 0 to 31 for
1802 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1803 * to 127 for fourth. For example, if you setup three MOXA boards,
1804 * first board is C218, second board is C320-16 and third board is
1805 * C320-32. The port number of first board (C218 - 8 ports) is from
1806 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1807 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1808 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1809 * 127 will be invalid.
1810 *
1811 *
1812 * Moxa Functions Description:
1813 *
1814 * Function 1: Driver initialization routine, this routine must be
1815 * called when initialized driver.
1816 * Syntax:
1817 * void MoxaDriverInit();
1818 *
1819 *
1820 * Function 2: Moxa driver private IOCTL command processing.
1821 * Syntax:
1822 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1823 *
1824 * unsigned int cmd : IOCTL command
1825 * unsigned long arg : IOCTL argument
1826 * int port : port number (0 - 127)
1827 *
1828 * return: 0 (OK)
1829 * -EINVAL
1830 * -ENOIOCTLCMD
1831 *
1832 *
1833 * Function 3: Moxa driver polling process routine.
1834 * Syntax:
1835 * int MoxaDriverPoll(void);
1836 *
1837 * return: 0 ; polling O.K.
1838 * -1 : no any Moxa card.
1839 *
1840 *
1841 * Function 4: Get the ports of this card.
1842 * Syntax:
1843 * int MoxaPortsOfCard(int cardno);
1844 *
1845 * int cardno : card number (0 - 3)
1846 *
1847 * return: 0 : this card is invalid
1848 * 8/16/24/32
1849 *
1850 *
1851 * Function 5: Check this port is valid or invalid
1852 * Syntax:
1853 * int MoxaPortIsValid(int port);
1854 * int port : port number (0 - 127, ref port description)
1855 *
1856 * return: 0 : this port is invalid
1857 * 1 : this port is valid
1858 *
1859 *
1860 * Function 6: Enable this port to start Tx/Rx data.
1861 * Syntax:
1862 * void MoxaPortEnable(int port);
1863 * int port : port number (0 - 127)
1864 *
1865 *
1866 * Function 7: Disable this port
1867 * Syntax:
1868 * void MoxaPortDisable(int port);
1869 * int port : port number (0 - 127)
1870 *
1871 *
1872 * Function 8: Get the maximun available baud rate of this port.
1873 * Syntax:
1874 * long MoxaPortGetMaxBaud(int port);
1875 * int port : port number (0 - 127)
1876 *
1877 * return: 0 : this port is invalid
1878 * 38400/57600/115200 bps
1879 *
1880 *
1881 * Function 9: Get the current baud rate of this port.
1882 * Syntax:
1883 * long MoxaPortGetCurBaud(int port);
1884 * int port : port number (0 - 127)
1885 *
1886 * return: 0 : this port is invalid
1887 * 50 - 115200 bps
1888 *
1889 *
1890 * Function 10: Setting baud rate of this port.
1891 * Syntax:
1892 * long MoxaPortSetBaud(int port, long baud);
1893 * int port : port number (0 - 127)
1894 * long baud : baud rate (50 - 115200)
1895 *
1896 * return: 0 : this port is invalid or baud < 50
1897 * 50 - 115200 : the real baud rate set to the port, if
1898 * the argument baud is large than maximun
1899 * available baud rate, the real setting
1900 * baud rate will be the maximun baud rate.
1901 *
1902 *
1903 * Function 11: Setting the data-bits/stop-bits/parity of this port
1904 * Syntax:
1905 * int MoxaPortSetMode(int port, int databits, int stopbits, int parity);
1906 * int port : port number (0 - 127)
1907 * int databits : data bits (8/7/6/5)
1908 * int stopbits : stop bits (2/1/0, 0 show 1.5 stop bits)
1909 int parity : parity (0:None,1:Odd,2:Even,3:Mark,4:Space)
1910 *
1911 * return: -1 : invalid parameter
1912 * 0 : setting O.K.
1913 *
1914 *
1915 * Function 12: Configure the port.
1916 * Syntax:
606d099c 1917 * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud);
1da177e4 1918 * int port : port number (0 - 127)
606d099c 1919 * struct ktermios * termio : termio structure pointer
c7bce309 1920 * speed_t baud : baud rate
1da177e4
LT		 1921 *
1922 * return: -1 : this port is invalid or termio == NULL
1923 * 0 : setting O.K.
1924 *
1925 *
1926 * Function 13: Get the DTR/RTS state of this port.
1927 * Syntax:
1928 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1929 * int port : port number (0 - 127)
1930 * int * dtrState : pointer to INT to receive the current DTR
1931 * state. (if NULL, this function will not
1932 * write to this address)
1933 * int * rtsState : pointer to INT to receive the current RTS
1934 * state. (if NULL, this function will not
1935 * write to this address)
1936 *
1937 * return: -1 : this port is invalid
1938 * 0 : O.K.
1939 *
1940 *
1941 * Function 14: Setting the DTR/RTS output state of this port.
1942 * Syntax:
1943 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1944 * int port : port number (0 - 127)
1945 * int dtrState : DTR output state (0: off, 1: on)
1946 * int rtsState : RTS output state (0: off, 1: on)
1947 *
1948 *
1949 * Function 15: Setting the flow control of this port.
1950 * Syntax:
1951 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1952 * int txFlow,int xany);
1953 * int port : port number (0 - 127)
1954 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1955 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1956 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1957 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1958 * int xany : S/W XANY flow control (0: no, 1: yes)
1959 *
1960 *
1961 * Function 16: Get ths line status of this port
1962 * Syntax:
1963 * int MoxaPortLineStatus(int port);
1964 * int port : port number (0 - 127)
1965 *
1966 * return: Bit 0 - CTS state (0: off, 1: on)
1967 * Bit 1 - DSR state (0: off, 1: on)
1968 * Bit 2 - DCD state (0: off, 1: on)
1969 *
1970 *
1971 * Function 17: Check the DCD state has changed since the last read
1972 * of this function.
1973 * Syntax:
1974 * int MoxaPortDCDChange(int port);
1975 * int port : port number (0 - 127)
1976 *
1977 * return: 0 : no changed
1978 * 1 : DCD has changed
1979 *
1980 *
1981 * Function 18: Check ths current DCD state is ON or not.
1982 * Syntax:
1983 * int MoxaPortDCDON(int port);
1984 * int port : port number (0 - 127)
1985 *
1986 * return: 0 : DCD off
1987 * 1 : DCD on
1988 *
1989 *
1990 * Function 19: Flush the Rx/Tx buffer data of this port.
1991 * Syntax:
1992 * void MoxaPortFlushData(int port, int mode);
1993 * int port : port number (0 - 127)
1994 * int mode
1995 * 0 : flush the Rx buffer
1996 * 1 : flush the Tx buffer
1997 * 2 : flush the Rx and Tx buffer
1998 *
1999 *
2000 * Function 20: Write data.
2001 * Syntax:
2002 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
2003 * int port : port number (0 - 127)
2004 * unsigned char * buffer : pointer to write data buffer.
2005 * int length : write data length
2006 *
2007 * return: 0 - length : real write data length
2008 *
2009 *
2010 * Function 21: Read data.
2011 * Syntax:
33f0f88f 2012 * int MoxaPortReadData(int port, struct tty_struct *tty);
1da177e4 2013 * int port : port number (0 - 127)
33f0f88f 2014 * struct tty_struct *tty : tty for data
1da177e4
LT		 2015 *
2016 * return: 0 - length : real read data length
2017 *
2018 *
2019 * Function 22: Get the Tx buffer size of this port
2020 * Syntax:
2021 * int MoxaPortTxBufSize(int port);
2022 * int port : port number (0 - 127)
2023 *
2024 * return: .. : Tx buffer size
2025 *
2026 *
2027 * Function 23: Get the Rx buffer size of this port
2028 * Syntax:
2029 * int MoxaPortRxBufSize(int port);
2030 * int port : port number (0 - 127)
2031 *
2032 * return: .. : Rx buffer size
2033 *
2034 *
2035 * Function 24: Get the Tx buffer current queued data bytes
2036 * Syntax:
2037 * int MoxaPortTxQueue(int port);
2038 * int port : port number (0 - 127)
2039 *
2040 * return: .. : Tx buffer current queued data bytes
2041 *
2042 *
2043 * Function 25: Get the Tx buffer current free space
2044 * Syntax:
2045 * int MoxaPortTxFree(int port);
2046 * int port : port number (0 - 127)
2047 *
2048 * return: .. : Tx buffer current free space
2049 *
2050 *
2051 * Function 26: Get the Rx buffer current queued data bytes
2052 * Syntax:
2053 * int MoxaPortRxQueue(int port);
2054 * int port : port number (0 - 127)
2055 *
2056 * return: .. : Rx buffer current queued data bytes
2057 *
2058 *
2059 * Function 27: Get the Rx buffer current free space
2060 * Syntax:
2061 * int MoxaPortRxFree(int port);
2062 * int port : port number (0 - 127)
2063 *
2064 * return: .. : Rx buffer current free space
2065 *
2066 *
2067 * Function 28: Disable port data transmission.
2068 * Syntax:
2069 * void MoxaPortTxDisable(int port);
2070 * int port : port number (0 - 127)
2071 *
2072 *
2073 * Function 29: Enable port data transmission.
2074 * Syntax:
2075 * void MoxaPortTxEnable(int port);
2076 * int port : port number (0 - 127)
2077 *
2078 *
2079 * Function 30: Get the received BREAK signal count.
2080 * Syntax:
2081 * int MoxaPortGetBrkCnt(int port);
2082 * int port : port number (0 - 127)
2083 *
2084 * return: 0 - .. : BREAK signal count
2085 *
2086 *
2087 * Function 31: Get the received BREAK signal count and reset it.
2088 * Syntax:
2089 * int MoxaPortResetBrkCnt(int port);
2090 * int port : port number (0 - 127)
2091 *
2092 * return: 0 - .. : BREAK signal count
2093 *
2094 *
2095 * Function 32: Set the S/W flow control new XON/XOFF value, default
2096 * XON is 0x11 & XOFF is 0x13.
2097 * Syntax:
2098 * void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue);
2099 * int port : port number (0 - 127)
2100 * int xonValue : new XON value (0 - 255)
2101 * int xoffValue : new XOFF value (0 - 255)
2102 *
2103 *
2104 * Function 33: Check this port's transmission is hold by remote site
2105 * because the flow control.
2106 * Syntax:
2107 * int MoxaPortIsTxHold(int port);
2108 * int port : port number (0 - 127)
2109 *
2110 * return: 0 : normal
2111 * 1 : hold by remote site
2112 *
2113 *
2114 * Function 34: Send out a BREAK signal.
2115 * Syntax:
2116 * void MoxaPortSendBreak(int port, int ms100);
2117 * int port : port number (0 - 127)
2118 * int ms100 : break signal time interval.
2119 * unit: 100 mini-second. if ms100 == 0, it will
2120 * send out a about 250 ms BREAK signal.
2121 *
2122 */
2123int MoxaPortIsValid(int port)
2124{
2125
2126 if (moxaCard == 0)
2127 return (0);
2128 if (moxaChkPort[port] == 0)
2129 return (0);
2130 return (1);
2131}
2132
2133void MoxaPortEnable(int port)
2134{
2135 void __iomem *ofsAddr;
2136 int MoxaPortLineStatus(int);
2137 short lowwater = 512;
2138
2139 ofsAddr = moxaTableAddr[port];
2140 writew(lowwater, ofsAddr + Low_water);
2141 moxaBreakCnt[port] = 0;
2142 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2143 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2144 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
2145 } else {
2146 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
2147 }
2148
2149 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
2150 moxafunc(ofsAddr, FC_FlushQueue, 2);
2151
2152 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
2153 MoxaPortLineStatus(port);
2154}
2155
2156void MoxaPortDisable(int port)
2157{
2158 void __iomem *ofsAddr = moxaTableAddr[port];
2159
2160 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
2161 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
2162 writew(0, ofsAddr + HostStat);
2163 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
2164}
2165
2166long MoxaPortGetMaxBaud(int port)
2167{
2168 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2169 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
2170 return (460800L);
2171 else
2172 return (921600L);
2173}
2174
2175
2176long MoxaPortSetBaud(int port, long baud)
2177{
2178 void __iomem *ofsAddr;
2179 long max, clock;
2180 unsigned int val;
2181
2182 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
2183 return (0);
2184 ofsAddr = moxaTableAddr[port];
2185 if (baud > max)
2186 baud = max;
2187 if (max == 38400L)
2188 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2189 else if (max == 57600L)
2190 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2191 else
2192 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2193 val = clock / baud;
2194 moxafunc(ofsAddr, FC_SetBaud, val);
2195 baud = clock / val;
2196 moxaCurBaud[port] = baud;
2197 return (baud);
2198}
2199
606d099c 2200int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud)
1da177e4
LT		 2201{
2202 void __iomem *ofsAddr;
2203 tcflag_t cflag;
1da177e4
LT		 2204 tcflag_t mode = 0;
2205
2206 if (moxaChkPort[port] == 0 || termio == 0)
2207 return (-1);
2208 ofsAddr = moxaTableAddr[port];
2209 cflag = termio->c_cflag; /* termio->c_cflag */
2210
2211 mode = termio->c_cflag & CSIZE;
2212 if (mode == CS5)
2213 mode = MX_CS5;
2214 else if (mode == CS6)
2215 mode = MX_CS6;
2216 else if (mode == CS7)
2217 mode = MX_CS7;
2218 else if (mode == CS8)
2219 mode = MX_CS8;
2220
2221 if (termio->c_cflag & CSTOPB) {
2222 if (mode == MX_CS5)
2223 mode |= MX_STOP15;
2224 else
2225 mode |= MX_STOP2;
2226 } else
2227 mode |= MX_STOP1;
2228
2229 if (termio->c_cflag & PARENB) {
2230 if (termio->c_cflag & PARODD)
2231 mode |= MX_PARODD;
2232 else
2233 mode |= MX_PAREVEN;
2234 } else
2235 mode |= MX_PARNONE;
2236
2237 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2238
1da177e4
LT		 2239 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2240 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
c7bce309 2241 if (baud >= 921600L)
1da177e4
LT		 2242 return (-1);
2243 }
2244 MoxaPortSetBaud(port, baud);
2245
2246 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2247 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2248 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2249 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2250 wait_finish(ofsAddr);
2251
2252 }
2253 return (0);
2254}
2255
2256int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2257{
2258
2259 if (!MoxaPortIsValid(port))
2260 return (-1);
2261 if (dtrState) {
2262 if (moxaLineCtrl[port] & DTR_ON)
2263 *dtrState = 1;
2264 else
2265 *dtrState = 0;
2266 }
2267 if (rtsState) {
2268 if (moxaLineCtrl[port] & RTS_ON)
2269 *rtsState = 1;
2270 else
2271 *rtsState = 0;
2272 }
2273 return (0);
2274}
2275
2276void MoxaPortLineCtrl(int port, int dtr, int rts)
2277{
2278 void __iomem *ofsAddr;
2279 int mode;
2280
2281 ofsAddr = moxaTableAddr[port];
2282 mode = 0;
2283 if (dtr)
2284 mode |= DTR_ON;
2285 if (rts)
2286 mode |= RTS_ON;
2287 moxaLineCtrl[port] = mode;
2288 moxafunc(ofsAddr, FC_LineControl, mode);
2289}
2290
2291void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2292{
2293 void __iomem *ofsAddr;
2294 int mode;
2295
2296 ofsAddr = moxaTableAddr[port];
2297 mode = 0;
2298 if (rts)
2299 mode |= RTS_FlowCtl;
2300 if (cts)
2301 mode |= CTS_FlowCtl;
2302 if (txflow)
2303 mode |= Tx_FlowCtl;
2304 if (rxflow)
2305 mode |= Rx_FlowCtl;
2306 if (txany)
2307 mode |= IXM_IXANY;
2308 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2309}
2310
2311int MoxaPortLineStatus(int port)
2312{
2313 void __iomem *ofsAddr;
2314 int val;
2315
2316 ofsAddr = moxaTableAddr[port];
2317 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2318 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2319 moxafunc(ofsAddr, FC_LineStatus, 0);
2320 val = readw(ofsAddr + FuncArg);
2321 } else {
2322 val = readw(ofsAddr + FlagStat) >> 4;
2323 }
2324 val &= 0x0B;
2325 if (val & 8) {
2326 val |= 4;
2327 if ((moxaDCDState[port] & DCD_oldstate) == 0)
2328 moxaDCDState[port] = (DCD_oldstate | DCD_changed);
2329 } else {
2330 if (moxaDCDState[port] & DCD_oldstate)
2331 moxaDCDState[port] = DCD_changed;
2332 }
2333 val &= 7;
2334 return (val);
2335}
2336
2337int MoxaPortDCDChange(int port)
2338{
2339 int n;
2340
2341 if (moxaChkPort[port] == 0)
2342 return (0);
2343 n = moxaDCDState[port];
2344 moxaDCDState[port] &= ~DCD_changed;
2345 n &= DCD_changed;
2346 return (n);
2347}
2348
2349int MoxaPortDCDON(int port)
2350{
2351 int n;
2352
2353 if (moxaChkPort[port] == 0)
2354 return (0);
2355 if (moxaDCDState[port] & DCD_oldstate)
2356 n = 1;
2357 else
2358 n = 0;
2359 return (n);
2360}
2361
2362
2363/*
2364 int MoxaDumpMem(int port, unsigned char * buffer, int len)
2365 {
2366 int i;
2367 unsigned long baseAddr,ofsAddr,ofs;
2368
2369 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2370 ofs = baseAddr + DynPage_addr + pageofs;
2371 if (len > 0x2000L)
2372 len = 0x2000L;
2373 for (i = 0; i < len; i++)
2374 buffer[i] = readb(ofs+i);
2375 }
2376 */
2377
2378
2379int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2380{
2381 int c, total, i;
2382 ushort tail;
2383 int cnt;
2384 ushort head, tx_mask, spage, epage;
2385 ushort pageno, pageofs, bufhead;
2386 void __iomem *baseAddr, *ofsAddr, *ofs;
2387
2388 ofsAddr = moxaTableAddr[port];
2389 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2390 tx_mask = readw(ofsAddr + TX_mask);
2391 spage = readw(ofsAddr + Page_txb);
2392 epage = readw(ofsAddr + EndPage_txb);
2393 tail = readw(ofsAddr + TXwptr);
2394 head = readw(ofsAddr + TXrptr);
2395 c = (head > tail) ? (head - tail - 1)
2396 : (head - tail + tx_mask);
2397 if (c > len)
2398 c = len;
2399 moxaLog.txcnt[port] += c;
2400 total = c;
2401 if (spage == epage) {
2402 bufhead = readw(ofsAddr + Ofs_txb);
2403 writew(spage, baseAddr + Control_reg);
2404 while (c > 0) {
2405 if (head > tail)
2406 len = head - tail - 1;
2407 else
2408 len = tx_mask + 1 - tail;
2409 len = (c > len) ? len : c;
2410 ofs = baseAddr + DynPage_addr + bufhead + tail;
2411 for (i = 0; i < len; i++)
2412 writeb(*buffer++, ofs + i);
2413 tail = (tail + len) & tx_mask;
2414 c -= len;
2415 }
2416 writew(tail, ofsAddr + TXwptr);
2417 } else {
2418 len = c;
2419 pageno = spage + (tail >> 13);
2420 pageofs = tail & Page_mask;
2421 do {
2422 cnt = Page_size - pageofs;
2423 if (cnt > c)
2424 cnt = c;
2425 c -= cnt;
2426 writeb(pageno, baseAddr + Control_reg);
2427 ofs = baseAddr + DynPage_addr + pageofs;
2428 for (i = 0; i < cnt; i++)
2429 writeb(*buffer++, ofs + i);
2430 if (c == 0) {
2431 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2432 break;
2433 }
2434 if (++pageno == epage)
2435 pageno = spage;
2436 pageofs = 0;
2437 } while (1);
2438 }
2439 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2440 return (total);
2441}
2442
33f0f88f 2443int MoxaPortReadData(int port, struct tty_struct *tty)
1da177e4
LT		 2444{
2445 register ushort head, pageofs;
2446 int i, count, cnt, len, total, remain;
2447 ushort tail, rx_mask, spage, epage;
2448 ushort pageno, bufhead;
2449 void __iomem *baseAddr, *ofsAddr, *ofs;
2450
2451 ofsAddr = moxaTableAddr[port];
2452 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2453 head = readw(ofsAddr + RXrptr);
2454 tail = readw(ofsAddr + RXwptr);
2455 rx_mask = readw(ofsAddr + RX_mask);
2456 spage = readw(ofsAddr + Page_rxb);
2457 epage = readw(ofsAddr + EndPage_rxb);
2458 count = (tail >= head) ? (tail - head)
2459 : (tail - head + rx_mask + 1);
2460 if (count == 0)
33f0f88f 2461 return 0;
1da177e4 2462
33f0f88f 2463 total = count;
1da177e4
LT		 2464 remain = count - total;
2465 moxaLog.rxcnt[port] += total;
2466 count = total;
2467 if (spage == epage) {
2468 bufhead = readw(ofsAddr + Ofs_rxb);
2469 writew(spage, baseAddr + Control_reg);
2470 while (count > 0) {
2471 if (tail >= head)
2472 len = tail - head;
2473 else
2474 len = rx_mask + 1 - head;
2475 len = (count > len) ? len : count;
2476 ofs = baseAddr + DynPage_addr + bufhead + head;
2477 for (i = 0; i < len; i++)
33f0f88f 2478 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
1da177e4
LT		 2479 head = (head + len) & rx_mask;
2480 count -= len;
2481 }
2482 writew(head, ofsAddr + RXrptr);
2483 } else {
2484 len = count;
2485 pageno = spage + (head >> 13);
2486 pageofs = head & Page_mask;
2487 do {
2488 cnt = Page_size - pageofs;
2489 if (cnt > count)
2490 cnt = count;
2491 count -= cnt;
2492 writew(pageno, baseAddr + Control_reg);
2493 ofs = baseAddr + DynPage_addr + pageofs;
2494 for (i = 0; i < cnt; i++)
33f0f88f 2495 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
1da177e4
LT		 2496 if (count == 0) {
2497 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2498 break;
2499 }
2500 if (++pageno == epage)
2501 pageno = spage;
2502 pageofs = 0;
2503 } while (1);
2504 }
2505 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2506 moxaLowWaterChk = 1;
2507 moxaLowChkFlag[port] = 1;
2508 }
2509 return (total);
2510}
2511
2512
2513int MoxaPortTxQueue(int port)
2514{
2515 void __iomem *ofsAddr;
2516 ushort rptr, wptr, mask;
2517 int len;
2518
2519 ofsAddr = moxaTableAddr[port];
2520 rptr = readw(ofsAddr + TXrptr);
2521 wptr = readw(ofsAddr + TXwptr);
2522 mask = readw(ofsAddr + TX_mask);
2523 len = (wptr - rptr) & mask;
2524 return (len);
2525}
2526
2527int MoxaPortTxFree(int port)
2528{
2529 void __iomem *ofsAddr;
2530 ushort rptr, wptr, mask;
2531 int len;
2532
2533 ofsAddr = moxaTableAddr[port];
2534 rptr = readw(ofsAddr + TXrptr);
2535 wptr = readw(ofsAddr + TXwptr);
2536 mask = readw(ofsAddr + TX_mask);
2537 len = mask - ((wptr - rptr) & mask);
2538 return (len);
2539}
2540
2541int MoxaPortRxQueue(int port)
2542{
2543 void __iomem *ofsAddr;
2544 ushort rptr, wptr, mask;
2545 int len;
2546
2547 ofsAddr = moxaTableAddr[port];
2548 rptr = readw(ofsAddr + RXrptr);
2549 wptr = readw(ofsAddr + RXwptr);
2550 mask = readw(ofsAddr + RX_mask);
2551 len = (wptr - rptr) & mask;
2552 return (len);
2553}
2554
2555
2556void MoxaPortTxDisable(int port)
2557{
2558 void __iomem *ofsAddr;
2559
2560 ofsAddr = moxaTableAddr[port];
2561 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2562}
2563
2564void MoxaPortTxEnable(int port)
2565{
2566 void __iomem *ofsAddr;
2567
2568 ofsAddr = moxaTableAddr[port];
2569 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2570}
2571
2572
2573int MoxaPortResetBrkCnt(int port)
2574{
2575 ushort cnt;
2576 cnt = moxaBreakCnt[port];
2577 moxaBreakCnt[port] = 0;
2578 return (cnt);
2579}
2580
2581
2582void MoxaPortSendBreak(int port, int ms100)
2583{
2584 void __iomem *ofsAddr;
2585
2586 ofsAddr = moxaTableAddr[port];
2587 if (ms100) {
2588 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2589 moxadelay(ms100 * (HZ / 10));
2590 } else {
2591 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2592 moxadelay(HZ / 4); /* 250 ms */
2593 }
2594 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2595}
2596
2597static int moxa_get_serial_info(struct moxa_str *info,
2598 struct serial_struct __user *retinfo)
2599{
2600 struct serial_struct tmp;
2601
2602 memset(&tmp, 0, sizeof(tmp));
2603 tmp.type = info->type;
2604 tmp.line = info->port;
2605 tmp.port = 0;
2606 tmp.irq = 0;
2607 tmp.flags = info->asyncflags;
2608 tmp.baud_base = 921600;
2609 tmp.close_delay = info->close_delay;
2610 tmp.closing_wait = info->closing_wait;
2611 tmp.custom_divisor = 0;
2612 tmp.hub6 = 0;
2613 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2614 return -EFAULT;
2615 return (0);
2616}
2617
2618
2619static int moxa_set_serial_info(struct moxa_str *info,
2620 struct serial_struct __user *new_info)
2621{
2622 struct serial_struct new_serial;
2623
2624 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2625 return -EFAULT;
2626
2627 if ((new_serial.irq != 0) ||
2628 (new_serial.port != 0) ||
2629// (new_serial.type != info->type) ||
2630 (new_serial.custom_divisor != 0) ||
2631 (new_serial.baud_base != 921600))
2632 return (-EPERM);
2633
2634 if (!capable(CAP_SYS_ADMIN)) {
2635 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2636 (info->asyncflags & ~ASYNC_USR_MASK)))
2637 return (-EPERM);
2638 } else {
2639 info->close_delay = new_serial.close_delay * HZ / 100;
2640 info->closing_wait = new_serial.closing_wait * HZ / 100;
2641 }
2642
2643 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2644 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2645
2646 if (new_serial.type == PORT_16550A) {
2647 MoxaSetFifo(info->port, 1);
2648 } else {
2649 MoxaSetFifo(info->port, 0);
2650 }
2651
2652 info->type = new_serial.type;
2653 return (0);
2654}
2655
2656
2657
2658/*****************************************************************************
2659 * Static local functions: *
2660 *****************************************************************************/
2661/*
2662 * moxadelay - delays a specified number ticks
2663 */
2664static void moxadelay(int tick)
2665{
2666 unsigned long st, et;
2667
2668 st = jiffies;
2669 et = st + tick;
2670 while (time_before(jiffies, et));
2671}
2672
2673static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
2674{
2675
2676 writew(arg, ofsAddr + FuncArg);
2677 writew(cmd, ofsAddr + FuncCode);
2678 wait_finish(ofsAddr);
2679}
2680
2681static void wait_finish(void __iomem *ofsAddr)
2682{
2683 unsigned long i, j;
2684
2685 i = jiffies;
2686 while (readw(ofsAddr + FuncCode) != 0) {
2687 j = jiffies;
2688 if ((j - i) > moxaFuncTout) {
2689 return;
2690 }
2691 }
2692}
2693
2694static void low_water_check(void __iomem *ofsAddr)
2695{
2696 int len;
2697 ushort rptr, wptr, mask;
2698
2699 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2700 rptr = readw(ofsAddr + RXrptr);
2701 wptr = readw(ofsAddr + RXwptr);
2702 mask = readw(ofsAddr + RX_mask);
2703 len = (wptr - rptr) & mask;
2704 if (len <= Low_water)
2705 moxafunc(ofsAddr, FC_SendXon, 0);
2706 }
2707}
2708
2709static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2710{
2711 void __iomem *baseAddr;
2712 int i;
2713
2714 if(copy_from_user(moxaBuff, tmp, len))
2715 return -EFAULT;
2716 baseAddr = moxaBaseAddr[cardno];
2717 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2718 moxadelay(1); /* delay 10 ms */
2719 for (i = 0; i < 4096; i++)
2720 writeb(0, baseAddr + i); /* clear fix page */
2721 for (i = 0; i < len; i++)
2722 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2723 writeb(0, baseAddr + Control_reg); /* restart */
2724 return (0);
2725}
2726
2727static int moxafindcard(int cardno)
2728{
2729 void __iomem *baseAddr;
2730 ushort tmp;
2731
2732 baseAddr = moxaBaseAddr[cardno];
2733 switch (moxa_boards[cardno].boardType) {
2734 case MOXA_BOARD_C218_ISA:
2735 case MOXA_BOARD_C218_PCI:
2736 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2737 return (-1);
2738 }
2739 break;
2740 case MOXA_BOARD_CP204J:
2741 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2742 return (-1);
2743 }
2744 break;
2745 default:
2746 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2747 return (-1);
2748 }
2749 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2750 return (-2);
2751 }
2752 }
2753 return (0);
2754}
2755
2756static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2757{
2758 void __iomem *baseAddr;
2759 int i;
2760
2761 if(len > sizeof(moxaBuff))
2762 return -EINVAL;
2763 if(copy_from_user(moxaBuff, tmp, len))
2764 return -EFAULT;
2765 baseAddr = moxaBaseAddr[cardno];
2766 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2767 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2768 for (i = 0; i < 7168; i++)
2769 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2770 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2771 for (i = 0; i < (len - 7168); i++)
2772 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2773 return (0);
2774}
2775
2776static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2777{
2778 void __iomem *baseAddr, *ofsAddr;
2779 int retval, port, i;
2780
2781 if(copy_from_user(moxaBuff, tmp, len))
2782 return -EFAULT;
2783 baseAddr = moxaBaseAddr[cardno];
2784 switch (moxa_boards[cardno].boardType) {
2785 case MOXA_BOARD_C218_ISA:
2786 case MOXA_BOARD_C218_PCI:
2787 case MOXA_BOARD_CP204J:
2788 retval = moxaloadc218(cardno, baseAddr, len);
2789 if (retval)
2790 return (retval);
2791 port = cardno * MAX_PORTS_PER_BOARD;
2792 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2793 moxaChkPort[port] = 1;
2794 moxaCurBaud[port] = 9600L;
2795 moxaDCDState[port] = 0;
2796 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2797 ofsAddr = moxaTableAddr[port];
2798 writew(C218rx_mask, ofsAddr + RX_mask);
2799 writew(C218tx_mask, ofsAddr + TX_mask);
2800 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2801 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2802
2803 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2804 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2805
2806 }
2807 break;
2808 default:
2809 retval = moxaloadc320(cardno, baseAddr, len,
2810 &moxa_boards[cardno].numPorts);
2811 if (retval)
2812 return (retval);
2813 port = cardno * MAX_PORTS_PER_BOARD;
2814 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2815 moxaChkPort[port] = 1;
2816 moxaCurBaud[port] = 9600L;
2817 moxaDCDState[port] = 0;
2818 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2819 ofsAddr = moxaTableAddr[port];
2820 if (moxa_boards[cardno].numPorts == 8) {
2821 writew(C320p8rx_mask, ofsAddr + RX_mask);
2822 writew(C320p8tx_mask, ofsAddr + TX_mask);
2823 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2824 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2825 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2826 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2827
2828 } else if (moxa_boards[cardno].numPorts == 16) {
2829 writew(C320p16rx_mask, ofsAddr + RX_mask);
2830 writew(C320p16tx_mask, ofsAddr + TX_mask);
2831 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2832 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2833 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2834 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2835
2836 } else if (moxa_boards[cardno].numPorts == 24) {
2837 writew(C320p24rx_mask, ofsAddr + RX_mask);
2838 writew(C320p24tx_mask, ofsAddr + TX_mask);
2839 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2840 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2841 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2842 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2843 } else if (moxa_boards[cardno].numPorts == 32) {
2844 writew(C320p32rx_mask, ofsAddr + RX_mask);
2845 writew(C320p32tx_mask, ofsAddr + TX_mask);
2846 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2847 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2848 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2849 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2850 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2851 }
2852 }
2853 break;
2854 }
01cfaf0d 2855 loadstat[cardno] = 1;
1da177e4
LT		 2856 return (0);
2857}
2858
2859static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
2860{
2861 char retry;
2862 int i, j, len1, len2;
2863 ushort usum, *ptr, keycode;
2864
2865 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2866 keycode = CP204J_KeyCode;
2867 else
2868 keycode = C218_KeyCode;
2869 usum = 0;
2870 len1 = len >> 1;
2871 ptr = (ushort *) moxaBuff;
2872 for (i = 0; i < len1; i++)
01cfaf0d 2873 usum += le16_to_cpu(*(ptr + i));
1da177e4
LT		 2874 retry = 0;
2875 do {
2876 len1 = len >> 1;
2877 j = 0;
2878 while (len1) {
2879 len2 = (len1 > 2048) ? 2048 : len1;
2880 len1 -= len2;
2881 for (i = 0; i < len2 << 1; i++)
2882 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2883 j += i;
2884
2885 writew(len2, baseAddr + C218DLoad_len);
2886 writew(0, baseAddr + C218_key);
2887 for (i = 0; i < 100; i++) {
2888 if (readw(baseAddr + C218_key) == keycode)
2889 break;
2890 moxadelay(1); /* delay 10 ms */
2891 }
2892 if (readw(baseAddr + C218_key) != keycode) {
2893 return (-1);
2894 }
2895 }
2896 writew(0, baseAddr + C218DLoad_len);
2897 writew(usum, baseAddr + C218check_sum);
2898 writew(0, baseAddr + C218_key);
2899 for (i = 0; i < 100; i++) {
2900 if (readw(baseAddr + C218_key) == keycode)
2901 break;
2902 moxadelay(1); /* delay 10 ms */
2903 }
2904 retry++;
2905 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2906 if (readb(baseAddr + C218chksum_ok) != 1) {
2907 return (-1);
2908 }
2909 writew(0, baseAddr + C218_key);
2910 for (i = 0; i < 100; i++) {
2911 if (readw(baseAddr + Magic_no) == Magic_code)
2912 break;
2913 moxadelay(1); /* delay 10 ms */
2914 }
2915 if (readw(baseAddr + Magic_no) != Magic_code) {
2916 return (-1);
2917 }
2918 writew(1, baseAddr + Disable_IRQ);
2919 writew(0, baseAddr + Magic_no);
2920 for (i = 0; i < 100; i++) {
2921 if (readw(baseAddr + Magic_no) == Magic_code)
2922 break;
2923 moxadelay(1); /* delay 10 ms */
2924 }
2925 if (readw(baseAddr + Magic_no) != Magic_code) {
2926 return (-1);
2927 }
2928 moxaCard = 1;
2929 moxaIntNdx[cardno] = baseAddr + IRQindex;
2930 moxaIntPend[cardno] = baseAddr + IRQpending;
2931 moxaIntTable[cardno] = baseAddr + IRQtable;
2932 return (0);
2933}
2934
2935static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
2936{
2937 ushort usum;
2938 int i, j, wlen, len2, retry;
2939 ushort *uptr;
2940
2941 usum = 0;
2942 wlen = len >> 1;
2943 uptr = (ushort *) moxaBuff;
2944 for (i = 0; i < wlen; i++)
01cfaf0d 2945 usum += le16_to_cpu(uptr[i]);
1da177e4
LT		 2946 retry = 0;
2947 j = 0;
2948 do {
2949 while (wlen) {
2950 if (wlen > 2048)
2951 len2 = 2048;
2952 else
2953 len2 = wlen;
2954 wlen -= len2;
2955 len2 <<= 1;
2956 for (i = 0; i < len2; i++)
2957 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
2958 len2 >>= 1;
2959 j += i;
2960 writew(len2, baseAddr + C320DLoad_len);
2961 writew(0, baseAddr + C320_key);
2962 for (i = 0; i < 10; i++) {
2963 if (readw(baseAddr + C320_key) == C320_KeyCode)
2964 break;
2965 moxadelay(1);
2966 }
2967 if (readw(baseAddr + C320_key) != C320_KeyCode)
2968 return (-1);
2969 }
2970 writew(0, baseAddr + C320DLoad_len);
2971 writew(usum, baseAddr + C320check_sum);
2972 writew(0, baseAddr + C320_key);
2973 for (i = 0; i < 10; i++) {
2974 if (readw(baseAddr + C320_key) == C320_KeyCode)
2975 break;
2976 moxadelay(1);
2977 }
2978 retry++;
2979 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
2980 if (readb(baseAddr + C320chksum_ok) != 1)
2981 return (-1);
2982 writew(0, baseAddr + C320_key);
2983 for (i = 0; i < 600; i++) {
2984 if (readw(baseAddr + Magic_no) == Magic_code)
2985 break;
2986 moxadelay(1);
2987 }
2988 if (readw(baseAddr + Magic_no) != Magic_code)
2989 return (-100);
2990
2991 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
2992 writew(0x3800, baseAddr + TMS320_PORT1);
2993 writew(0x3900, baseAddr + TMS320_PORT2);
2994 writew(28499, baseAddr + TMS320_CLOCK);
2995 } else {
2996 writew(0x3200, baseAddr + TMS320_PORT1);
2997 writew(0x3400, baseAddr + TMS320_PORT2);
2998 writew(19999, baseAddr + TMS320_CLOCK);
2999 }
3000 writew(1, baseAddr + Disable_IRQ);
3001 writew(0, baseAddr + Magic_no);
3002 for (i = 0; i < 500; i++) {
3003 if (readw(baseAddr + Magic_no) == Magic_code)
3004 break;
3005 moxadelay(1);
3006 }
3007 if (readw(baseAddr + Magic_no) != Magic_code)
3008 return (-102);
3009
3010 j = readw(baseAddr + Module_cnt);
3011 if (j <= 0)
3012 return (-101);
3013 *numPorts = j * 8;
3014 writew(j, baseAddr + Module_no);
3015 writew(0, baseAddr + Magic_no);
3016 for (i = 0; i < 600; i++) {
3017 if (readw(baseAddr + Magic_no) == Magic_code)
3018 break;
3019 moxadelay(1);
3020 }
3021 if (readw(baseAddr + Magic_no) != Magic_code)
3022 return (-102);
3023 moxaCard = 1;
3024 moxaIntNdx[cardno] = baseAddr + IRQindex;
3025 moxaIntPend[cardno] = baseAddr + IRQpending;
3026 moxaIntTable[cardno] = baseAddr + IRQtable;
3027 return (0);
3028}
3029
3030#if 0
3031long MoxaPortGetCurBaud(int port)
3032{
3033
3034 if (moxaChkPort[port] == 0)
3035 return (0);
3036 return (moxaCurBaud[port]);
3037}
3038#endif /* 0 */
3039
3040static void MoxaSetFifo(int port, int enable)
3041{
3042 void __iomem *ofsAddr = moxaTableAddr[port];
3043
3044 if (!enable) {
3045 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
3046 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
3047 } else {
3048 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
3049 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
3050 }
3051}
3052
3053#if 0
3054int MoxaPortSetMode(int port, int databits, int stopbits, int parity)
3055{
3056 void __iomem *ofsAddr;
3057 int val;
3058
3059 val = 0;
3060 switch (databits) {
3061 case 5:
3062 val |= 0;
3063 break;
3064 case 6:
3065 val |= 1;
3066 break;
3067 case 7:
3068 val |= 2;
3069 break;
3070 case 8:
3071 val |= 3;
3072 break;
3073 default:
3074 return (-1);
3075 }
3076 switch (stopbits) {
3077 case 0:
3078 val |= 0;
3079 break; /* stop bits 1.5 */
3080 case 1:
3081 val |= 0;
3082 break;
3083 case 2:
3084 val |= 4;
3085 break;
3086 default:
3087 return (-1);
3088 }
3089 switch (parity) {
3090 case 0:
3091 val |= 0x00;
3092 break; /* None */
3093 case 1:
3094 val |= 0x08;
3095 break; /* Odd */
3096 case 2:
3097 val |= 0x18;
3098 break; /* Even */
3099 case 3:
3100 val |= 0x28;
3101 break; /* Mark */
3102 case 4:
3103 val |= 0x38;
3104 break; /* Space */
3105 default:
3106 return (-1);
3107 }
3108 ofsAddr = moxaTableAddr[port];
3109 moxafunc(ofsAddr, FC_SetMode, val);
3110 return (0);
3111}
3112
3113int MoxaPortTxBufSize(int port)
3114{
3115 void __iomem *ofsAddr;
3116 int size;
3117
3118 ofsAddr = moxaTableAddr[port];
3119 size = readw(ofsAddr + TX_mask);
3120 return (size);
3121}
3122
3123int MoxaPortRxBufSize(int port)
3124{
3125 void __iomem *ofsAddr;
3126 int size;
3127
3128 ofsAddr = moxaTableAddr[port];
3129 size = readw(ofsAddr + RX_mask);
3130 return (size);
3131}
3132
3133int MoxaPortRxFree(int port)
3134{
3135 void __iomem *ofsAddr;
3136 ushort rptr, wptr, mask;
3137 int len;
3138
3139 ofsAddr = moxaTableAddr[port];
3140 rptr = readw(ofsAddr + RXrptr);
3141 wptr = readw(ofsAddr + RXwptr);
3142 mask = readw(ofsAddr + RX_mask);
3143 len = mask - ((wptr - rptr) & mask);
3144 return (len);
3145}
3146int MoxaPortGetBrkCnt(int port)
3147{
3148 return (moxaBreakCnt[port]);
3149}
3150
3151void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue)
3152{
3153 void __iomem *ofsAddr;
3154
3155 ofsAddr = moxaTableAddr[port];
3156 writew(xonValue, ofsAddr + FuncArg);
3157 writew(xoffValue, ofsAddr + FuncArg1);
3158 writew(FC_SetXonXoff, ofsAddr + FuncCode);
3159 wait_finish(ofsAddr);
3160}
3161
3162int MoxaPortIsTxHold(int port)
3163{
3164 void __iomem *ofsAddr;
3165 int val;
3166
3167 ofsAddr = moxaTableAddr[port];
3168 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
3169 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
3170 moxafunc(ofsAddr, FC_GetCCSR, 0);
3171 val = readw(ofsAddr + FuncArg);
3172 if (val & 0x04)
3173 return (1);
3174 } else {
3175 if (readw(ofsAddr + FlagStat) & Tx_flowOff)
3176 return (1);
3177 }
3178 return (0);
3179}
3180#endif
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