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[PATCH] Char: moxa, remove moxa_pci_devinfo
[deliverable/linux.git] / drivers / char / moxa.c
CommitLineData
1da177e4
LT		 1/*****************************************************************************/
2/*
3 * moxa.c -- MOXA Intellio family multiport serial driver.
4 *
5 * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com.tw).
6 *
7 * This code is loosely based on the Linux serial driver, written by
8 * Linus Torvalds, Theodore T'so and others.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
1da177e4
LT		 14 */
15
16/*
17 * MOXA Intellio Series Driver
18 * for : LINUX
19 * date : 1999/1/7
20 * version : 5.1
21 */
22
1da177e4
LT		 23#include <linux/module.h>
24#include <linux/types.h>
25#include <linux/mm.h>
26#include <linux/ioport.h>
27#include <linux/errno.h>
28#include <linux/signal.h>
29#include <linux/sched.h>
30#include <linux/timer.h>
31#include <linux/interrupt.h>
32#include <linux/tty.h>
33#include <linux/tty_flip.h>
34#include <linux/major.h>
35#include <linux/string.h>
36#include <linux/fcntl.h>
37#include <linux/ptrace.h>
38#include <linux/serial.h>
39#include <linux/tty_driver.h>
40#include <linux/delay.h>
41#include <linux/pci.h>
42#include <linux/init.h>
43#include <linux/bitops.h>
44
45#include <asm/system.h>
46#include <asm/io.h>
47#include <asm/uaccess.h>
48
11324edd 49#define MOXA_VERSION "5.1k"
1da177e4 50
11324edd
JS		 51#define MOXAMAJOR 172
52#define MOXACUMAJOR 173
1da177e4 53
11324edd 54#define MAX_BOARDS 4 /* Don't change this value */
1da177e4 55#define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
11324edd 56#define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD)
1da177e4
LT		 57
58/*
59 * Define the Moxa PCI vendor and device IDs.
60 */
11324edd
JS		 61#define MOXA_BUS_TYPE_ISA 0
62#define MOXA_BUS_TYPE_PCI 1
1da177e4 63
1da177e4
LT		 64enum {
65 MOXA_BOARD_C218_PCI = 1,
66 MOXA_BOARD_C218_ISA,
67 MOXA_BOARD_C320_PCI,
68 MOXA_BOARD_C320_ISA,
69 MOXA_BOARD_CP204J,
70};
71
72static char *moxa_brdname[] =
73{
74 "C218 Turbo PCI series",
75 "C218 Turbo ISA series",
76 "C320 Turbo PCI series",
77 "C320 Turbo ISA series",
78 "CP-204J series",
79};
80
81#ifdef CONFIG_PCI
82static struct pci_device_id moxa_pcibrds[] = {
5ebb4078
JS		 83 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218),
84 .driver_data = MOXA_BOARD_C218_PCI },
85 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320),
86 .driver_data = MOXA_BOARD_C320_PCI },
87 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J),
88 .driver_data = MOXA_BOARD_CP204J },
1da177e4
LT		 89 { 0 }
90};
91MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
92#endif /* CONFIG_PCI */
93
9dff89cd 94struct moxa_isa_board_conf {
1da177e4
LT		 95 int boardType;
96 int numPorts;
97 unsigned long baseAddr;
9dff89cd 98};
1da177e4 99
9dff89cd 100static struct moxa_isa_board_conf moxa_isa_boards[] =
1da177e4
LT		 101{
102/* {MOXA_BOARD_C218_ISA,8,0xDC000}, */
103};
104
9dff89cd 105struct moxa_board_conf {
1da177e4
LT		 106 int boardType;
107 int numPorts;
108 unsigned long baseAddr;
109 int busType;
889074ee 110 struct pci_dev *pdev;
9dff89cd 111};
1da177e4 112
9dff89cd 113static struct moxa_board_conf moxa_boards[MAX_BOARDS];
1da177e4 114static void __iomem *moxaBaseAddr[MAX_BOARDS];
01cfaf0d 115static int loadstat[MAX_BOARDS];
1da177e4
LT		 116
117struct moxa_str {
118 int type;
119 int port;
120 int close_delay;
121 unsigned short closing_wait;
122 int count;
123 int blocked_open;
124 long event; /* long req'd for set_bit --RR */
125 int asyncflags;
126 unsigned long statusflags;
127 struct tty_struct *tty;
128 int cflag;
129 wait_queue_head_t open_wait;
130 wait_queue_head_t close_wait;
1da177e4
LT		 131};
132
133struct mxser_mstatus {
134 tcflag_t cflag;
135 int cts;
136 int dsr;
137 int ri;
138 int dcd;
139};
140
141static struct mxser_mstatus GMStatus[MAX_PORTS];
142
143/* statusflags */
144#define TXSTOPPED 0x1
145#define LOWWAIT 0x2
146#define EMPTYWAIT 0x4
147#define THROTTLE 0x8
148
1da177e4
LT		 149#define SERIAL_DO_RESTART
150
1da177e4
LT		 151#define WAKEUP_CHARS 256
152
1da177e4
LT		 153static int verbose = 0;
154static int ttymajor = MOXAMAJOR;
155/* Variables for insmod */
156#ifdef MODULE
9fa372a8
JS		 157static int baseaddr[4];
158static int type[4];
159static int numports[4];
1da177e4
LT		 160#endif
161
162MODULE_AUTHOR("William Chen");
163MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
164MODULE_LICENSE("GPL");
165#ifdef MODULE
166module_param_array(type, int, NULL, 0);
167module_param_array(baseaddr, int, NULL, 0);
168module_param_array(numports, int, NULL, 0);
169#endif
170module_param(ttymajor, int, 0);
171module_param(verbose, bool, 0644);
172
1da177e4
LT		 173/*
174 * static functions:
175 */
1da177e4
LT		 176static int moxa_open(struct tty_struct *, struct file *);
177static void moxa_close(struct tty_struct *, struct file *);
178static int moxa_write(struct tty_struct *, const unsigned char *, int);
179static int moxa_write_room(struct tty_struct *);
180static void moxa_flush_buffer(struct tty_struct *);
181static int moxa_chars_in_buffer(struct tty_struct *);
182static void moxa_flush_chars(struct tty_struct *);
183static void moxa_put_char(struct tty_struct *, unsigned char);
184static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
185static void moxa_throttle(struct tty_struct *);
186static void moxa_unthrottle(struct tty_struct *);
606d099c 187static void moxa_set_termios(struct tty_struct *, struct ktermios *);
1da177e4
LT		 188static void moxa_stop(struct tty_struct *);
189static void moxa_start(struct tty_struct *);
190static void moxa_hangup(struct tty_struct *);
191static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
192static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
193 unsigned int set, unsigned int clear);
194static void moxa_poll(unsigned long);
195static void set_tty_param(struct tty_struct *);
196static int block_till_ready(struct tty_struct *, struct file *,
197 struct moxa_str *);
198static void setup_empty_event(struct tty_struct *);
199static void check_xmit_empty(unsigned long);
200static void shut_down(struct moxa_str *);
201static void receive_data(struct moxa_str *);
202/*
203 * moxa board interface functions:
204 */
205static void MoxaDriverInit(void);
206static int MoxaDriverIoctl(unsigned int, unsigned long, int);
207static int MoxaDriverPoll(void);
208static int MoxaPortsOfCard(int);
209static int MoxaPortIsValid(int);
210static void MoxaPortEnable(int);
211static void MoxaPortDisable(int);
212static long MoxaPortGetMaxBaud(int);
213static long MoxaPortSetBaud(int, long);
606d099c 214static int MoxaPortSetTermio(int, struct ktermios *, speed_t);
1da177e4
LT		 215static int MoxaPortGetLineOut(int, int *, int *);
216static void MoxaPortLineCtrl(int, int, int);
217static void MoxaPortFlowCtrl(int, int, int, int, int, int);
218static int MoxaPortLineStatus(int);
219static int MoxaPortDCDChange(int);
220static int MoxaPortDCDON(int);
221static void MoxaPortFlushData(int, int);
222static int MoxaPortWriteData(int, unsigned char *, int);
33f0f88f 223static int MoxaPortReadData(int, struct tty_struct *tty);
1da177e4
LT		 224static int MoxaPortTxQueue(int);
225static int MoxaPortRxQueue(int);
226static int MoxaPortTxFree(int);
227static void MoxaPortTxDisable(int);
228static void MoxaPortTxEnable(int);
229static int MoxaPortResetBrkCnt(int);
230static void MoxaPortSendBreak(int, int);
231static int moxa_get_serial_info(struct moxa_str *, struct serial_struct __user *);
232static int moxa_set_serial_info(struct moxa_str *, struct serial_struct __user *);
233static void MoxaSetFifo(int port, int enable);
234
b68e31d0 235static const struct tty_operations moxa_ops = {
1da177e4
LT		 236 .open = moxa_open,
237 .close = moxa_close,
238 .write = moxa_write,
239 .write_room = moxa_write_room,
240 .flush_buffer = moxa_flush_buffer,
241 .chars_in_buffer = moxa_chars_in_buffer,
242 .flush_chars = moxa_flush_chars,
243 .put_char = moxa_put_char,
244 .ioctl = moxa_ioctl,
245 .throttle = moxa_throttle,
246 .unthrottle = moxa_unthrottle,
247 .set_termios = moxa_set_termios,
248 .stop = moxa_stop,
249 .start = moxa_start,
250 .hangup = moxa_hangup,
251 .tiocmget = moxa_tiocmget,
252 .tiocmset = moxa_tiocmset,
253};
254
aa7e5221
JS		 255static struct tty_driver *moxaDriver;
256static struct moxa_str moxaChannels[MAX_PORTS];
257static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0);
258static struct timer_list moxaEmptyTimer[MAX_PORTS];
34af946a 259static DEFINE_SPINLOCK(moxa_lock);
33f0f88f 260
1da177e4 261#ifdef CONFIG_PCI
9dff89cd
JS		 262static int moxa_get_PCI_conf(struct pci_dev *p, int board_type,
263 struct moxa_board_conf *board)
1da177e4
LT		 264{
265 board->baseAddr = pci_resource_start (p, 2);
266 board->boardType = board_type;
267 switch (board_type) {
268 case MOXA_BOARD_C218_ISA:
269 case MOXA_BOARD_C218_PCI:
270 board->numPorts = 8;
271 break;
272
273 case MOXA_BOARD_CP204J:
274 board->numPorts = 4;
275 break;
276 default:
277 board->numPorts = 0;
278 break;
279 }
280 board->busType = MOXA_BUS_TYPE_PCI;
86fbf148 281 /* don't lose the reference in the next pci_get_device iteration */
889074ee 282 board->pdev = pci_dev_get(p);
1da177e4
LT		 283
284 return (0);
285}
286#endif /* CONFIG_PCI */
287
288static int __init moxa_init(void)
289{
290 int i, numBoards;
291 struct moxa_str *ch;
292
293 printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION);
294 moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
295 if (!moxaDriver)
296 return -ENOMEM;
297
1da177e4 298 moxaDriver->owner = THIS_MODULE;
9b4e3b13 299 moxaDriver->name = "ttyMX";
1da177e4
LT		 300 moxaDriver->major = ttymajor;
301 moxaDriver->minor_start = 0;
302 moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
303 moxaDriver->subtype = SERIAL_TYPE_NORMAL;
304 moxaDriver->init_termios = tty_std_termios;
1da177e4 305 moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
606d099c
AC		 306 moxaDriver->init_termios.c_ispeed = 9600;
307 moxaDriver->init_termios.c_ospeed = 9600;
1da177e4
LT		 308 moxaDriver->flags = TTY_DRIVER_REAL_RAW;
309 tty_set_operations(moxaDriver, &moxa_ops);
310
1da177e4
LT		 311 for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) {
312 ch->type = PORT_16550A;
313 ch->port = i;
1da177e4
LT		 314 ch->close_delay = 5 * HZ / 10;
315 ch->closing_wait = 30 * HZ;
1da177e4
LT		 316 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
317 init_waitqueue_head(&ch->open_wait);
318 init_waitqueue_head(&ch->close_wait);
319 }
320
1da177e4
LT		 321 printk("Tty devices major number = %d\n", ttymajor);
322
323 if (tty_register_driver(moxaDriver)) {
324 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
325 put_tty_driver(moxaDriver);
326 return -1;
327 }
aa7e5221
JS		 328 for (i = 0; i < MAX_PORTS; i++)
329 setup_timer(&moxaEmptyTimer[i], check_xmit_empty,
330 (unsigned long)&moxaChannels[i]);
1da177e4 331
aa7e5221 332 mod_timer(&moxaTimer, jiffies + HZ / 50);
1da177e4
LT		 333
334 /* Find the boards defined in source code */
335 numBoards = 0;
336 for (i = 0; i < MAX_BOARDS; i++) {
337 if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) ||
338 (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) {
339 moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType;
340 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
341 moxa_boards[numBoards].numPorts = 8;
342 else
343 moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts;
344 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
345 moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr;
346 if (verbose)
347 printk("Board %2d: %s board(baseAddr=%lx)\n",
348 numBoards + 1,
349 moxa_brdname[moxa_boards[numBoards].boardType - 1],
350 moxa_boards[numBoards].baseAddr);
351 numBoards++;
352 }
353 }
354 /* Find the boards defined form module args. */
355#ifdef MODULE
356 for (i = 0; i < MAX_BOARDS; i++) {
357 if ((type[i] == MOXA_BOARD_C218_ISA) ||
358 (type[i] == MOXA_BOARD_C320_ISA)) {
359 if (verbose)
360 printk("Board %2d: %s board(baseAddr=%lx)\n",
361 numBoards + 1,
362 moxa_brdname[type[i] - 1],
363 (unsigned long) baseaddr[i]);
364 if (numBoards >= MAX_BOARDS) {
365 if (verbose)
366 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
367 continue;
368 }
369 moxa_boards[numBoards].boardType = type[i];
370 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
371 moxa_boards[numBoards].numPorts = 8;
372 else
373 moxa_boards[numBoards].numPorts = numports[i];
374 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
375 moxa_boards[numBoards].baseAddr = baseaddr[i];
376 numBoards++;
377 }
378 }
379#endif
380 /* Find PCI boards here */
381#ifdef CONFIG_PCI
382 {
383 struct pci_dev *p = NULL;
fe971071 384 int n = ARRAY_SIZE(moxa_pcibrds) - 1;
1da177e4
LT		 385 i = 0;
386 while (i < n) {
881a8c12 387 while ((p = pci_get_device(moxa_pcibrds[i].vendor, moxa_pcibrds[i].device, p))!=NULL)
1da177e4
LT		 388 {
389 if (pci_enable_device(p))
390 continue;
391 if (numBoards >= MAX_BOARDS) {
392 if (verbose)
393 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
394 } else {
395 moxa_get_PCI_conf(p, moxa_pcibrds[i].driver_data,
396 &moxa_boards[numBoards]);
397 numBoards++;
398 }
399 }
400 i++;
401 }
402 }
403#endif
404 for (i = 0; i < numBoards; i++) {
405 moxaBaseAddr[i] = ioremap((unsigned long) moxa_boards[i].baseAddr, 0x4000);
406 }
407
408 return (0);
409}
410
411static void __exit moxa_exit(void)
412{
413 int i;
414
415 if (verbose)
416 printk("Unloading module moxa ...\n");
417
c251ae0d 418 del_timer_sync(&moxaTimer);
1da177e4
LT		 419
420 for (i = 0; i < MAX_PORTS; i++)
c251ae0d 421 del_timer_sync(&moxaEmptyTimer[i]);
1da177e4
LT		 422
423 if (tty_unregister_driver(moxaDriver))
424 printk("Couldn't unregister MOXA Intellio family serial driver\n");
425 put_tty_driver(moxaDriver);
86fbf148 426
41bdabbb
AL		 427 for (i = 0; i < MAX_BOARDS; i++) {
428 if (moxaBaseAddr[i])
429 iounmap(moxaBaseAddr[i]);
86fbf148 430 if (moxa_boards[i].busType == MOXA_BUS_TYPE_PCI)
889074ee 431 pci_dev_put(moxa_boards[i].pdev);
41bdabbb 432 }
86fbf148 433
1da177e4
LT		 434 if (verbose)
435 printk("Done\n");
436}
437
438module_init(moxa_init);
439module_exit(moxa_exit);
440
1da177e4
LT		 441static int moxa_open(struct tty_struct *tty, struct file *filp)
442{
443 struct moxa_str *ch;
444 int port;
445 int retval;
1da177e4 446
11324edd 447 port = tty->index;
1da177e4
LT		 448 if (port == MAX_PORTS) {
449 return (0);
450 }
451 if (!MoxaPortIsValid(port)) {
452 tty->driver_data = NULL;
453 return (-ENODEV);
454 }
1da177e4
LT		 455
456 ch = &moxaChannels[port];
457 ch->count++;
458 tty->driver_data = ch;
459 ch->tty = tty;
460 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
461 ch->statusflags = 0;
462 set_tty_param(tty);
463 MoxaPortLineCtrl(ch->port, 1, 1);
464 MoxaPortEnable(ch->port);
465 ch->asyncflags |= ASYNC_INITIALIZED;
466 }
467 retval = block_till_ready(tty, filp, ch);
468
469 moxa_unthrottle(tty);
470
471 if (ch->type == PORT_16550A) {
472 MoxaSetFifo(ch->port, 1);
473 } else {
474 MoxaSetFifo(ch->port, 0);
475 }
476
477 return (retval);
478}
479
480static void moxa_close(struct tty_struct *tty, struct file *filp)
481{
482 struct moxa_str *ch;
483 int port;
484
11324edd 485 port = tty->index;
1da177e4
LT		 486 if (port == MAX_PORTS) {
487 return;
488 }
489 if (!MoxaPortIsValid(port)) {
490#ifdef SERIAL_DEBUG_CLOSE
491 printk("Invalid portno in moxa_close\n");
492#endif
493 tty->driver_data = NULL;
494 return;
495 }
496 if (tty->driver_data == NULL) {
497 return;
498 }
499 if (tty_hung_up_p(filp)) {
500 return;
501 }
502 ch = (struct moxa_str *) tty->driver_data;
503
504 if ((tty->count == 1) && (ch->count != 1)) {
505 printk("moxa_close: bad serial port count; tty->count is 1, "
506 "ch->count is %d\n", ch->count);
507 ch->count = 1;
508 }
509 if (--ch->count < 0) {
510 printk("moxa_close: bad serial port count, device=%s\n",
511 tty->name);
512 ch->count = 0;
513 }
514 if (ch->count) {
515 return;
516 }
517 ch->asyncflags |= ASYNC_CLOSING;
518
519 ch->cflag = tty->termios->c_cflag;
520 if (ch->asyncflags & ASYNC_INITIALIZED) {
521 setup_empty_event(tty);
522 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
c251ae0d 523 del_timer_sync(&moxaEmptyTimer[ch->port]);
1da177e4
LT		 524 }
525 shut_down(ch);
526 MoxaPortFlushData(port, 2);
527
528 if (tty->driver->flush_buffer)
529 tty->driver->flush_buffer(tty);
530 tty_ldisc_flush(tty);
531
532 tty->closing = 0;
533 ch->event = 0;
534 ch->tty = NULL;
535 if (ch->blocked_open) {
536 if (ch->close_delay) {
537 msleep_interruptible(jiffies_to_msecs(ch->close_delay));
538 }
539 wake_up_interruptible(&ch->open_wait);
540 }
541 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
542 wake_up_interruptible(&ch->close_wait);
543}
544
545static int moxa_write(struct tty_struct *tty,
546 const unsigned char *buf, int count)
547{
548 struct moxa_str *ch;
549 int len, port;
550 unsigned long flags;
551
552 ch = (struct moxa_str *) tty->driver_data;
553 if (ch == NULL)
554 return (0);
555 port = ch->port;
33f0f88f
AC		 556
557 spin_lock_irqsave(&moxa_lock, flags);
1da177e4 558 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
33f0f88f 559 spin_unlock_irqrestore(&moxa_lock, flags);
1da177e4
LT		 560
561 /*********************************************
562 if ( !(ch->statusflags & LOWWAIT) &&
563 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
564 ************************************************/
565 ch->statusflags |= LOWWAIT;
566 return (len);
567}
568
569static int moxa_write_room(struct tty_struct *tty)
570{
571 struct moxa_str *ch;
572
573 if (tty->stopped)
574 return (0);
575 ch = (struct moxa_str *) tty->driver_data;
576 if (ch == NULL)
577 return (0);
578 return (MoxaPortTxFree(ch->port));
579}
580
581static void moxa_flush_buffer(struct tty_struct *tty)
582{
583 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
584
585 if (ch == NULL)
586 return;
587 MoxaPortFlushData(ch->port, 1);
588 tty_wakeup(tty);
589}
590
591static int moxa_chars_in_buffer(struct tty_struct *tty)
592{
593 int chars;
594 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
595
596 /*
597 * Sigh...I have to check if driver_data is NULL here, because
598 * if an open() fails, the TTY subsystem eventually calls
599 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
600 * routine. And since the open() failed, we return 0 here. TDJ
601 */
602 if (ch == NULL)
603 return (0);
604 chars = MoxaPortTxQueue(ch->port);
605 if (chars) {
606 /*
607 * Make it possible to wakeup anything waiting for output
608 * in tty_ioctl.c, etc.
609 */
610 if (!(ch->statusflags & EMPTYWAIT))
611 setup_empty_event(tty);
612 }
613 return (chars);
614}
615
616static void moxa_flush_chars(struct tty_struct *tty)
617{
618 /*
619 * Don't think I need this, because this is called to empty the TX
620 * buffer for the 16450, 16550, etc.
621 */
622}
623
624static void moxa_put_char(struct tty_struct *tty, unsigned char c)
625{
626 struct moxa_str *ch;
627 int port;
628 unsigned long flags;
629
630 ch = (struct moxa_str *) tty->driver_data;
631 if (ch == NULL)
632 return;
633 port = ch->port;
33f0f88f 634 spin_lock_irqsave(&moxa_lock, flags);
f204d267 635 MoxaPortWriteData(port, &c, 1);
33f0f88f 636 spin_unlock_irqrestore(&moxa_lock, flags);
1da177e4
LT		 637 /************************************************
638 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
639 *************************************************/
640 ch->statusflags |= LOWWAIT;
641}
642
643static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
644{
645 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
646 int port;
647 int flag = 0, dtr, rts;
648
11324edd 649 port = tty->index;
1da177e4
LT		 650 if ((port != MAX_PORTS) && (!ch))
651 return (-EINVAL);
652
653 MoxaPortGetLineOut(ch->port, &dtr, &rts);
654 if (dtr)
655 flag |= TIOCM_DTR;
656 if (rts)
657 flag |= TIOCM_RTS;
658 dtr = MoxaPortLineStatus(ch->port);
659 if (dtr & 1)
660 flag |= TIOCM_CTS;
661 if (dtr & 2)
662 flag |= TIOCM_DSR;
663 if (dtr & 4)
664 flag |= TIOCM_CD;
665 return flag;
666}
667
668static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
669 unsigned int set, unsigned int clear)
670{
671 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
672 int port;
673 int dtr, rts;
674
11324edd 675 port = tty->index;
1da177e4
LT		 676 if ((port != MAX_PORTS) && (!ch))
677 return (-EINVAL);
678
679 MoxaPortGetLineOut(ch->port, &dtr, &rts);
680 if (set & TIOCM_RTS)
681 rts = 1;
682 if (set & TIOCM_DTR)
683 dtr = 1;
684 if (clear & TIOCM_RTS)
685 rts = 0;
686 if (clear & TIOCM_DTR)
687 dtr = 0;
688 MoxaPortLineCtrl(ch->port, dtr, rts);
689 return 0;
690}
691
692static int moxa_ioctl(struct tty_struct *tty, struct file *file,
693 unsigned int cmd, unsigned long arg)
694{
695 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
696 register int port;
697 void __user *argp = (void __user *)arg;
698 int retval;
699
11324edd 700 port = tty->index;
1da177e4
LT		 701 if ((port != MAX_PORTS) && (!ch))
702 return (-EINVAL);
703
704 switch (cmd) {
705 case TCSBRK: /* SVID version: non-zero arg --> no break */
706 retval = tty_check_change(tty);
707 if (retval)
708 return (retval);
709 setup_empty_event(tty);
710 tty_wait_until_sent(tty, 0);
711 if (!arg)
712 MoxaPortSendBreak(ch->port, 0);
713 return (0);
714 case TCSBRKP: /* support for POSIX tcsendbreak() */
715 retval = tty_check_change(tty);
716 if (retval)
717 return (retval);
718 setup_empty_event(tty);
719 tty_wait_until_sent(tty, 0);
720 MoxaPortSendBreak(ch->port, arg);
721 return (0);
722 case TIOCGSOFTCAR:
723 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
724 case TIOCSSOFTCAR:
725 if(get_user(retval, (unsigned long __user *) argp))
726 return -EFAULT;
727 arg = retval;
728 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
729 (arg ? CLOCAL : 0));
730 if (C_CLOCAL(tty))
731 ch->asyncflags &= ~ASYNC_CHECK_CD;
732 else
733 ch->asyncflags |= ASYNC_CHECK_CD;
734 return (0);
735 case TIOCGSERIAL:
736 return moxa_get_serial_info(ch, argp);
737
738 case TIOCSSERIAL:
739 return moxa_set_serial_info(ch, argp);
740 default:
741 retval = MoxaDriverIoctl(cmd, arg, port);
742 }
743 return (retval);
744}
745
746static void moxa_throttle(struct tty_struct *tty)
747{
748 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
749
750 ch->statusflags |= THROTTLE;
751}
752
753static void moxa_unthrottle(struct tty_struct *tty)
754{
755 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
756
757 ch->statusflags &= ~THROTTLE;
758}
759
760static void moxa_set_termios(struct tty_struct *tty,
606d099c 761 struct ktermios *old_termios)
1da177e4
LT		 762{
763 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
764
765 if (ch == NULL)
766 return;
767 set_tty_param(tty);
768 if (!(old_termios->c_cflag & CLOCAL) &&
769 (tty->termios->c_cflag & CLOCAL))
770 wake_up_interruptible(&ch->open_wait);
771}
772
773static void moxa_stop(struct tty_struct *tty)
774{
775 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
776
777 if (ch == NULL)
778 return;
779 MoxaPortTxDisable(ch->port);
780 ch->statusflags |= TXSTOPPED;
781}
782
783
784static void moxa_start(struct tty_struct *tty)
785{
786 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
787
788 if (ch == NULL)
789 return;
790
791 if (!(ch->statusflags & TXSTOPPED))
792 return;
793
794 MoxaPortTxEnable(ch->port);
795 ch->statusflags &= ~TXSTOPPED;
796}
797
798static void moxa_hangup(struct tty_struct *tty)
799{
800 struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
801
802 moxa_flush_buffer(tty);
803 shut_down(ch);
804 ch->event = 0;
805 ch->count = 0;
806 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
807 ch->tty = NULL;
808 wake_up_interruptible(&ch->open_wait);
809}
810
811static void moxa_poll(unsigned long ignored)
812{
813 register int card;
814 struct moxa_str *ch;
815 struct tty_struct *tp;
816 int i, ports;
817
1da177e4
LT		 818 del_timer(&moxaTimer);
819
820 if (MoxaDriverPoll() < 0) {
aa7e5221 821 mod_timer(&moxaTimer, jiffies + HZ / 50);
1da177e4
LT		 822 return;
823 }
824 for (card = 0; card < MAX_BOARDS; card++) {
825 if ((ports = MoxaPortsOfCard(card)) <= 0)
826 continue;
827 ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
828 for (i = 0; i < ports; i++, ch++) {
829 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
830 continue;
831 if (!(ch->statusflags & THROTTLE) &&
832 (MoxaPortRxQueue(ch->port) > 0))
833 receive_data(ch);
834 if ((tp = ch->tty) == 0)
835 continue;
836 if (ch->statusflags & LOWWAIT) {
837 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
838 if (!tp->stopped) {
839 ch->statusflags &= ~LOWWAIT;
840 tty_wakeup(tp);
841 }
842 }
843 }
844 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
845 tty_insert_flip_char(tp, 0, TTY_BREAK);
846 tty_schedule_flip(tp);
847 }
848 if (MoxaPortDCDChange(ch->port)) {
849 if (ch->asyncflags & ASYNC_CHECK_CD) {
850 if (MoxaPortDCDON(ch->port))
851 wake_up_interruptible(&ch->open_wait);
852 else {
ba196df3
JS		 853 tty_hangup(tp);
854 wake_up_interruptible(&ch->open_wait);
855 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
1da177e4
LT		 856 }
857 }
858 }
859 }
860 }
861
aa7e5221 862 mod_timer(&moxaTimer, jiffies + HZ / 50);
1da177e4
LT		 863}
864
865/******************************************************************************/
866
867static void set_tty_param(struct tty_struct *tty)
868{
606d099c 869 register struct ktermios *ts;
1da177e4
LT		 870 struct moxa_str *ch;
871 int rts, cts, txflow, rxflow, xany;
872
873 ch = (struct moxa_str *) tty->driver_data;
874 ts = tty->termios;
875 if (ts->c_cflag & CLOCAL)
876 ch->asyncflags &= ~ASYNC_CHECK_CD;
877 else
878 ch->asyncflags |= ASYNC_CHECK_CD;
879 rts = cts = txflow = rxflow = xany = 0;
880 if (ts->c_cflag & CRTSCTS)
881 rts = cts = 1;
882 if (ts->c_iflag & IXON)
883 txflow = 1;
884 if (ts->c_iflag & IXOFF)
885 rxflow = 1;
886 if (ts->c_iflag & IXANY)
887 xany = 1;
888 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
c7bce309 889 MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty));
1da177e4
LT		 890}
891
892static int block_till_ready(struct tty_struct *tty, struct file *filp,
893 struct moxa_str *ch)
894{
895 DECLARE_WAITQUEUE(wait,current);
896 unsigned long flags;
897 int retval;
898 int do_clocal = C_CLOCAL(tty);
899
900 /*
901 * If the device is in the middle of being closed, then block
902 * until it's done, and then try again.
903 */
904 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
905 if (ch->asyncflags & ASYNC_CLOSING)
906 interruptible_sleep_on(&ch->close_wait);
907#ifdef SERIAL_DO_RESTART
908 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
909 return (-EAGAIN);
910 else
911 return (-ERESTARTSYS);
912#else
913 return (-EAGAIN);
914#endif
915 }
916 /*
917 * If non-blocking mode is set, then make the check up front
918 * and then exit.
919 */
920 if (filp->f_flags & O_NONBLOCK) {
921 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
922 return (0);
923 }
924 /*
925 * Block waiting for the carrier detect and the line to become free
926 */
927 retval = 0;
928 add_wait_queue(&ch->open_wait, &wait);
929#ifdef SERIAL_DEBUG_OPEN
930 printk("block_til_ready before block: ttys%d, count = %d\n",
931 ch->line, ch->count);
932#endif
33f0f88f 933 spin_lock_irqsave(&moxa_lock, flags);
1da177e4
LT		 934 if (!tty_hung_up_p(filp))
935 ch->count--;
1da177e4 936 ch->blocked_open++;
33f0f88f
AC		 937 spin_unlock_irqrestore(&moxa_lock, flags);
938
1da177e4
LT		 939 while (1) {
940 set_current_state(TASK_INTERRUPTIBLE);
941 if (tty_hung_up_p(filp) ||
942 !(ch->asyncflags & ASYNC_INITIALIZED)) {
943#ifdef SERIAL_DO_RESTART
944 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
945 retval = -EAGAIN;
946 else
947 retval = -ERESTARTSYS;
948#else
949 retval = -EAGAIN;
950#endif
951 break;
952 }
953 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
954 MoxaPortDCDON(ch->port)))
955 break;
956
957 if (signal_pending(current)) {
958 retval = -ERESTARTSYS;
959 break;
960 }
961 schedule();
962 }
963 set_current_state(TASK_RUNNING);
964 remove_wait_queue(&ch->open_wait, &wait);
33f0f88f
AC		 965
966 spin_lock_irqsave(&moxa_lock, flags);
1da177e4
LT		 967 if (!tty_hung_up_p(filp))
968 ch->count++;
969 ch->blocked_open--;
33f0f88f 970 spin_unlock_irqrestore(&moxa_lock, flags);
1da177e4
LT		 971#ifdef SERIAL_DEBUG_OPEN
972 printk("block_til_ready after blocking: ttys%d, count = %d\n",
973 ch->line, ch->count);
974#endif
975 if (retval)
976 return (retval);
33f0f88f 977 /* FIXME: review to see if we need to use set_bit on these */
1da177e4 978 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
33f0f88f 979 return 0;
1da177e4
LT		 980}
981
982static void setup_empty_event(struct tty_struct *tty)
983{
984 struct moxa_str *ch = tty->driver_data;
985 unsigned long flags;
986
33f0f88f 987 spin_lock_irqsave(&moxa_lock, flags);
1da177e4 988 ch->statusflags |= EMPTYWAIT;
aa7e5221 989 mod_timer(&moxaEmptyTimer[ch->port], jiffies + HZ);
33f0f88f 990 spin_unlock_irqrestore(&moxa_lock, flags);
1da177e4
LT		 991}
992
993static void check_xmit_empty(unsigned long data)
994{
995 struct moxa_str *ch;
996
997 ch = (struct moxa_str *) data;
c251ae0d 998 del_timer_sync(&moxaEmptyTimer[ch->port]);
1da177e4
LT		 999 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1000 if (MoxaPortTxQueue(ch->port) == 0) {
1001 ch->statusflags &= ~EMPTYWAIT;
1002 tty_wakeup(ch->tty);
1003 return;
1004 }
aa7e5221 1005 mod_timer(&moxaEmptyTimer[ch->port], jiffies + HZ);
1da177e4
LT		 1006 } else
1007 ch->statusflags &= ~EMPTYWAIT;
1008}
1009
1010static void shut_down(struct moxa_str *ch)
1011{
1012 struct tty_struct *tp;
1013
1014 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1015 return;
1016
1017 tp = ch->tty;
1018
1019 MoxaPortDisable(ch->port);
1020
1021 /*
1022 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1023 */
1024 if (tp->termios->c_cflag & HUPCL)
1025 MoxaPortLineCtrl(ch->port, 0, 0);
1026
1027 ch->asyncflags &= ~ASYNC_INITIALIZED;
1028}
1029
1030static void receive_data(struct moxa_str *ch)
1031{
1032 struct tty_struct *tp;
606d099c 1033 struct ktermios *ts;
1da177e4
LT		 1034 unsigned long flags;
1035
1036 ts = NULL;
1037 tp = ch->tty;
1038 if (tp)
1039 ts = tp->termios;
1040 /**************************************************
1041 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1042 *****************************************************/
1043 if (!tp || !ts) {
1044 MoxaPortFlushData(ch->port, 0);
1045 return;
1046 }
33f0f88f
AC		 1047 spin_lock_irqsave(&moxa_lock, flags);
1048 MoxaPortReadData(ch->port, tp);
1049 spin_unlock_irqrestore(&moxa_lock, flags);
1050 tty_schedule_flip(tp);
1da177e4
LT		 1051}
1052
1053#define Magic_code 0x404
1054
1055/*
1056 * System Configuration
1057 */
1058/*
1059 * for C218 BIOS initialization
1060 */
1061#define C218_ConfBase 0x800
1062#define C218_status (C218_ConfBase + 0) /* BIOS running status */
1063#define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1064#define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1065#define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1066#define C218check_sum (C218_ConfBase + 8) /* BYTE */
1067#define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1068#define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1069#define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1070#define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1071#define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1072
1073#define C218_LoadBuf 0x0F00
1074#define C218_KeyCode 0x218
1075#define CP204J_KeyCode 0x204
1076
1077/*
1078 * for C320 BIOS initialization
1079 */
1080#define C320_ConfBase 0x800
1081#define C320_LoadBuf 0x0f00
1082#define STS_init 0x05 /* for C320_status */
1083
1084#define C320_status C320_ConfBase + 0 /* BIOS running status */
1085#define C320_diag C320_ConfBase + 2 /* diagnostic status */
1086#define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1087#define C320DLoad_len C320_ConfBase + 6 /* WORD */
1088#define C320check_sum C320_ConfBase + 8 /* WORD */
1089#define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1090#define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1091#define C320UART_no C320_ConfBase + 0x0e /* WORD */
1092
1093#define C320_KeyCode 0x320
1094
1095#define FixPage_addr 0x0000 /* starting addr of static page */
1096#define DynPage_addr 0x2000 /* starting addr of dynamic page */
1097#define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1098#define Control_reg 0x1ff0 /* select page and reset control */
1099#define HW_reset 0x80
1100
1101/*
1102 * Function Codes
1103 */
1104#define FC_CardReset 0x80
1105#define FC_ChannelReset 1 /* C320 firmware not supported */
1106#define FC_EnableCH 2
1107#define FC_DisableCH 3
1108#define FC_SetParam 4
1109#define FC_SetMode 5
1110#define FC_SetRate 6
1111#define FC_LineControl 7
1112#define FC_LineStatus 8
1113#define FC_XmitControl 9
1114#define FC_FlushQueue 10
1115#define FC_SendBreak 11
1116#define FC_StopBreak 12
1117#define FC_LoopbackON 13
1118#define FC_LoopbackOFF 14
1119#define FC_ClrIrqTable 15
1120#define FC_SendXon 16
1121#define FC_SetTermIrq 17 /* C320 firmware not supported */
1122#define FC_SetCntIrq 18 /* C320 firmware not supported */
1123#define FC_SetBreakIrq 19
1124#define FC_SetLineIrq 20
1125#define FC_SetFlowCtl 21
1126#define FC_GenIrq 22
1127#define FC_InCD180 23
1128#define FC_OutCD180 24
1129#define FC_InUARTreg 23
1130#define FC_OutUARTreg 24
1131#define FC_SetXonXoff 25
1132#define FC_OutCD180CCR 26
1133#define FC_ExtIQueue 27
1134#define FC_ExtOQueue 28
1135#define FC_ClrLineIrq 29
1136#define FC_HWFlowCtl 30
1137#define FC_GetClockRate 35
1138#define FC_SetBaud 36
1139#define FC_SetDataMode 41
1140#define FC_GetCCSR 43
1141#define FC_GetDataError 45
1142#define FC_RxControl 50
1143#define FC_ImmSend 51
1144#define FC_SetXonState 52
1145#define FC_SetXoffState 53
1146#define FC_SetRxFIFOTrig 54
1147#define FC_SetTxFIFOCnt 55
1148#define FC_UnixRate 56
1149#define FC_UnixResetTimer 57
1150
1151#define RxFIFOTrig1 0
1152#define RxFIFOTrig4 1
1153#define RxFIFOTrig8 2
1154#define RxFIFOTrig14 3
1155
1156/*
1157 * Dual-Ported RAM
1158 */
1159#define DRAM_global 0
1160#define INT_data (DRAM_global + 0)
1161#define Config_base (DRAM_global + 0x108)
1162
1163#define IRQindex (INT_data + 0)
1164#define IRQpending (INT_data + 4)
1165#define IRQtable (INT_data + 8)
1166
1167/*
1168 * Interrupt Status
1169 */
1170#define IntrRx 0x01 /* receiver data O.K. */
1171#define IntrTx 0x02 /* transmit buffer empty */
1172#define IntrFunc 0x04 /* function complete */
1173#define IntrBreak 0x08 /* received break */
1174#define IntrLine 0x10 /* line status change
1175 for transmitter */
1176#define IntrIntr 0x20 /* received INTR code */
1177#define IntrQuit 0x40 /* received QUIT code */
1178#define IntrEOF 0x80 /* received EOF code */
1179
1180#define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1181#define IntrTxTrigger 0x200 /* tx data count below trigger value */
1182
1183#define Magic_no (Config_base + 0)
1184#define Card_model_no (Config_base + 2)
1185#define Total_ports (Config_base + 4)
1186#define Module_cnt (Config_base + 8)
1187#define Module_no (Config_base + 10)
1188#define Timer_10ms (Config_base + 14)
1189#define Disable_IRQ (Config_base + 20)
1190#define TMS320_PORT1 (Config_base + 22)
1191#define TMS320_PORT2 (Config_base + 24)
1192#define TMS320_CLOCK (Config_base + 26)
1193
1194/*
1195 * DATA BUFFER in DRAM
1196 */
1197#define Extern_table 0x400 /* Base address of the external table
1198 (24 words * 64) total 3K bytes
1199 (24 words * 128) total 6K bytes */
1200#define Extern_size 0x60 /* 96 bytes */
1201#define RXrptr 0x00 /* read pointer for RX buffer */
1202#define RXwptr 0x02 /* write pointer for RX buffer */
1203#define TXrptr 0x04 /* read pointer for TX buffer */
1204#define TXwptr 0x06 /* write pointer for TX buffer */
1205#define HostStat 0x08 /* IRQ flag and general flag */
1206#define FlagStat 0x0A
1207#define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1208 /* x x x x | | | | */
1209 /* | | | + CTS flow */
1210 /* | | +--- RTS flow */
1211 /* | +------ TX Xon/Xoff */
1212 /* +--------- RX Xon/Xoff */
1213#define Break_cnt 0x0E /* received break count */
1214#define CD180TXirq 0x10 /* if non-0: enable TX irq */
1215#define RX_mask 0x12
1216#define TX_mask 0x14
1217#define Ofs_rxb 0x16
1218#define Ofs_txb 0x18
1219#define Page_rxb 0x1A
1220#define Page_txb 0x1C
1221#define EndPage_rxb 0x1E
1222#define EndPage_txb 0x20
1223#define Data_error 0x22
1224#define RxTrigger 0x28
1225#define TxTrigger 0x2a
1226
1227#define rRXwptr 0x34
1228#define Low_water 0x36
1229
1230#define FuncCode 0x40
1231#define FuncArg 0x42
1232#define FuncArg1 0x44
1233
1234#define C218rx_size 0x2000 /* 8K bytes */
1235#define C218tx_size 0x8000 /* 32K bytes */
1236
1237#define C218rx_mask (C218rx_size - 1)
1238#define C218tx_mask (C218tx_size - 1)
1239
1240#define C320p8rx_size 0x2000
1241#define C320p8tx_size 0x8000
1242#define C320p8rx_mask (C320p8rx_size - 1)
1243#define C320p8tx_mask (C320p8tx_size - 1)
1244
1245#define C320p16rx_size 0x2000
1246#define C320p16tx_size 0x4000
1247#define C320p16rx_mask (C320p16rx_size - 1)
1248#define C320p16tx_mask (C320p16tx_size - 1)
1249
1250#define C320p24rx_size 0x2000
1251#define C320p24tx_size 0x2000
1252#define C320p24rx_mask (C320p24rx_size - 1)
1253#define C320p24tx_mask (C320p24tx_size - 1)
1254
1255#define C320p32rx_size 0x1000
1256#define C320p32tx_size 0x1000
1257#define C320p32rx_mask (C320p32rx_size - 1)
1258#define C320p32tx_mask (C320p32tx_size - 1)
1259
1260#define Page_size 0x2000
1261#define Page_mask (Page_size - 1)
1262#define C218rx_spage 3
1263#define C218tx_spage 4
1264#define C218rx_pageno 1
1265#define C218tx_pageno 4
1266#define C218buf_pageno 5
1267
1268#define C320p8rx_spage 3
1269#define C320p8tx_spage 4
1270#define C320p8rx_pgno 1
1271#define C320p8tx_pgno 4
1272#define C320p8buf_pgno 5
1273
1274#define C320p16rx_spage 3
1275#define C320p16tx_spage 4
1276#define C320p16rx_pgno 1
1277#define C320p16tx_pgno 2
1278#define C320p16buf_pgno 3
1279
1280#define C320p24rx_spage 3
1281#define C320p24tx_spage 4
1282#define C320p24rx_pgno 1
1283#define C320p24tx_pgno 1
1284#define C320p24buf_pgno 2
1285
1286#define C320p32rx_spage 3
1287#define C320p32tx_ofs C320p32rx_size
1288#define C320p32tx_spage 3
1289#define C320p32buf_pgno 1
1290
1291/*
1292 * Host Status
1293 */
1294#define WakeupRx 0x01
1295#define WakeupTx 0x02
1296#define WakeupBreak 0x08
1297#define WakeupLine 0x10
1298#define WakeupIntr 0x20
1299#define WakeupQuit 0x40
1300#define WakeupEOF 0x80 /* used in VTIME control */
1301#define WakeupRxTrigger 0x100
1302#define WakeupTxTrigger 0x200
1303/*
1304 * Flag status
1305 */
1306#define Rx_over 0x01
1307#define Xoff_state 0x02
1308#define Tx_flowOff 0x04
1309#define Tx_enable 0x08
1310#define CTS_state 0x10
1311#define DSR_state 0x20
1312#define DCD_state 0x80
1313/*
1314 * FlowControl
1315 */
1316#define CTS_FlowCtl 1
1317#define RTS_FlowCtl 2
1318#define Tx_FlowCtl 4
1319#define Rx_FlowCtl 8
1320#define IXM_IXANY 0x10
1321
1322#define LowWater 128
1323
1324#define DTR_ON 1
1325#define RTS_ON 2
1326#define CTS_ON 1
1327#define DSR_ON 2
1328#define DCD_ON 8
1329
1330/* mode definition */
1331#define MX_CS8 0x03
1332#define MX_CS7 0x02
1333#define MX_CS6 0x01
1334#define MX_CS5 0x00
1335
1336#define MX_STOP1 0x00
1337#define MX_STOP15 0x04
1338#define MX_STOP2 0x08
1339
1340#define MX_PARNONE 0x00
1341#define MX_PAREVEN 0x40
1342#define MX_PARODD 0xC0
1343
1344/*
1345 * Query
1346 */
1da177e4
LT		 1347
1348struct mon_str {
1349 int tick;
1350 int rxcnt[MAX_PORTS];
1351 int txcnt[MAX_PORTS];
1352};
1da177e4
LT		 1353
1354#define DCD_changed 0x01
1355#define DCD_oldstate 0x80
1356
1357static unsigned char moxaBuff[10240];
1358static void __iomem *moxaIntNdx[MAX_BOARDS];
1359static void __iomem *moxaIntPend[MAX_BOARDS];
1360static void __iomem *moxaIntTable[MAX_BOARDS];
1361static char moxaChkPort[MAX_PORTS];
1362static char moxaLineCtrl[MAX_PORTS];
1363static void __iomem *moxaTableAddr[MAX_PORTS];
1364static long moxaCurBaud[MAX_PORTS];
1365static char moxaDCDState[MAX_PORTS];
1366static char moxaLowChkFlag[MAX_PORTS];
1367static int moxaLowWaterChk;
1368static int moxaCard;
9dff89cd 1369static struct mon_str moxaLog;
9fa372a8 1370static int moxaFuncTout = HZ / 2;
1da177e4
LT		 1371static ushort moxaBreakCnt[MAX_PORTS];
1372
1373static void moxadelay(int);
1374static void moxafunc(void __iomem *, int, ushort);
1375static void wait_finish(void __iomem *);
1376static void low_water_check(void __iomem *);
1377static int moxaloadbios(int, unsigned char __user *, int);
1378static int moxafindcard(int);
1379static int moxaload320b(int, unsigned char __user *, int);
1380static int moxaloadcode(int, unsigned char __user *, int);
1381static int moxaloadc218(int, void __iomem *, int);
1382static int moxaloadc320(int, void __iomem *, int, int *);
1383
1384/*****************************************************************************
1385 * Driver level functions: *
1386 * 1. MoxaDriverInit(void); *
1387 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1388 * 3. MoxaDriverPoll(void); *
1389 *****************************************************************************/
1390void MoxaDriverInit(void)
1391{
1392 int i;
1393
1394 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1395 moxaCard = 0;
1396 moxaLog.tick = 0;
1397 moxaLowWaterChk = 0;
1398 for (i = 0; i < MAX_PORTS; i++) {
1399 moxaChkPort[i] = 0;
1400 moxaLowChkFlag[i] = 0;
1401 moxaLineCtrl[i] = 0;
1402 moxaLog.rxcnt[i] = 0;
1403 moxaLog.txcnt[i] = 0;
1404 }
1405}
1406
1407#define MOXA 0x400
1408#define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1409#define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1410#define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1411#define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1412#define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1413#define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1414#define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1415#define MOXA_GETDATACOUNT (MOXA + 23)
1416#define MOXA_GET_IOQUEUE (MOXA + 27)
1417#define MOXA_FLUSH_QUEUE (MOXA + 28)
1418#define MOXA_GET_CONF (MOXA + 35) /* configuration */
1419#define MOXA_GET_MAJOR (MOXA + 63)
1420#define MOXA_GET_CUMAJOR (MOXA + 64)
1421#define MOXA_GETMSTATUS (MOXA + 65)
1422
1423
1424struct moxaq_str {
1425 int inq;
1426 int outq;
1427};
1428
1429struct dl_str {
1430 char __user *buf;
1431 int len;
1432 int cardno;
1433};
1434
1435static struct moxaq_str temp_queue[MAX_PORTS];
1436static struct dl_str dltmp;
1437
1438void MoxaPortFlushData(int port, int mode)
1439{
1440 void __iomem *ofsAddr;
1441 if ((mode < 0) || (mode > 2))
1442 return;
1443 ofsAddr = moxaTableAddr[port];
1444 moxafunc(ofsAddr, FC_FlushQueue, mode);
1445 if (mode != 1) {
1446 moxaLowChkFlag[port] = 0;
1447 low_water_check(ofsAddr);
1448 }
1449}
1450
1451int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1452{
1453 int i;
1454 int status;
1455 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1456 void __user *argp = (void __user *)arg;
1457
11324edd 1458 if (port == MAX_PORTS) {
1da177e4
LT		 1459 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1460 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1461 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1462 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1463 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1464 return (-EINVAL);
1465 }
1466 switch (cmd) {
1467 case MOXA_GET_CONF:
9dff89cd
JS		 1468 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS *
1469 sizeof(struct moxa_board_conf)))
1da177e4
LT		 1470 return -EFAULT;
1471 return (0);
1472 case MOXA_INIT_DRIVER:
1473 if ((int) arg == 0x404)
1474 MoxaDriverInit();
1475 return (0);
1476 case MOXA_GETDATACOUNT:
1477 moxaLog.tick = jiffies;
9dff89cd 1478 if(copy_to_user(argp, &moxaLog, sizeof(struct mon_str)))
1da177e4
LT		 1479 return -EFAULT;
1480 return (0);
1481 case MOXA_FLUSH_QUEUE:
1482 MoxaPortFlushData(port, arg);
1483 return (0);
1484 case MOXA_GET_IOQUEUE:
1485 for (i = 0; i < MAX_PORTS; i++) {
1486 if (moxaChkPort[i]) {
1487 temp_queue[i].inq = MoxaPortRxQueue(i);
1488 temp_queue[i].outq = MoxaPortTxQueue(i);
1489 }
1490 }
1491 if(copy_to_user(argp, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
1492 return -EFAULT;
1493 return (0);
1494 case MOXA_GET_OQUEUE:
1495 i = MoxaPortTxQueue(port);
1496 return put_user(i, (unsigned long __user *)argp);
1497 case MOXA_GET_IQUEUE:
1498 i = MoxaPortRxQueue(port);
1499 return put_user(i, (unsigned long __user *)argp);
1500 case MOXA_GET_MAJOR:
1501 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1502 return -EFAULT;
1503 return 0;
1504 case MOXA_GET_CUMAJOR:
1505 i = 0;
1506 if(copy_to_user(argp, &i, sizeof(int)))
1507 return -EFAULT;
1508 return 0;
1509 case MOXA_GETMSTATUS:
1510 for (i = 0; i < MAX_PORTS; i++) {
1511 GMStatus[i].ri = 0;
1512 GMStatus[i].dcd = 0;
1513 GMStatus[i].dsr = 0;
1514 GMStatus[i].cts = 0;
1515 if (!moxaChkPort[i]) {
1516 continue;
1517 } else {
1518 status = MoxaPortLineStatus(moxaChannels[i].port);
1519 if (status & 1)
1520 GMStatus[i].cts = 1;
1521 if (status & 2)
1522 GMStatus[i].dsr = 1;
1523 if (status & 4)
1524 GMStatus[i].dcd = 1;
1525 }
1526
1527 if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
1528 GMStatus[i].cflag = moxaChannels[i].cflag;
1529 else
1530 GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
1531 }
1532 if(copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
1533 return -EFAULT;
1534 return 0;
1535 default:
1536 return (-ENOIOCTLCMD);
1537 case MOXA_LOAD_BIOS:
1538 case MOXA_FIND_BOARD:
1539 case MOXA_LOAD_C320B:
1540 case MOXA_LOAD_CODE:
49cd619c
AC		 1541 if (!capable(CAP_SYS_RAWIO))
1542 return -EPERM;
1da177e4
LT		 1543 break;
1544 }
1545
1546 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1547 return -EFAULT;
1548 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
1549 return -EINVAL;
1550
1551 switch(cmd)
1552 {
1553 case MOXA_LOAD_BIOS:
1554 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1555 return (i);
1556 case MOXA_FIND_BOARD:
1557 return moxafindcard(dltmp.cardno);
1558 case MOXA_LOAD_C320B:
1559 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1560 default: /* to keep gcc happy */
1561 return (0);
1562 case MOXA_LOAD_CODE:
1563 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1564 if (i == -1)
1565 return (-EFAULT);
1566 return (i);
1567
1568 }
1569}
1570
1571int MoxaDriverPoll(void)
1572{
1573 register ushort temp;
1574 register int card;
1575 void __iomem *ofsAddr;
1576 void __iomem *ip;
1577 int port, p, ports;
1578
1579 if (moxaCard == 0)
1580 return (-1);
1581 for (card = 0; card < MAX_BOARDS; card++) {
01cfaf0d
DE		 1582 if (loadstat[card] == 0)
1583 continue;
1da177e4
LT		 1584 if ((ports = moxa_boards[card].numPorts) == 0)
1585 continue;
1586 if (readb(moxaIntPend[card]) == 0xff) {
1587 ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
1588 p = card * MAX_PORTS_PER_BOARD;
1589 ports <<= 1;
1590 for (port = 0; port < ports; port += 2, p++) {
1591 if ((temp = readw(ip + port)) != 0) {
1592 writew(0, ip + port);
1593 ofsAddr = moxaTableAddr[p];
1594 if (temp & IntrTx)
1595 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1596 if (temp & IntrBreak) {
1597 moxaBreakCnt[p]++;
1598 }
1599 if (temp & IntrLine) {
1600 if (readb(ofsAddr + FlagStat) & DCD_state) {
1601 if ((moxaDCDState[p] & DCD_oldstate) == 0)
1602 moxaDCDState[p] = (DCD_oldstate |
1603 DCD_changed);
1604 } else {
1605 if (moxaDCDState[p] & DCD_oldstate)
1606 moxaDCDState[p] = DCD_changed;
1607 }
1608 }
1609 }
1610 }
1611 writeb(0, moxaIntPend[card]);
1612 }
1613 if (moxaLowWaterChk) {
1614 p = card * MAX_PORTS_PER_BOARD;
1615 for (port = 0; port < ports; port++, p++) {
1616 if (moxaLowChkFlag[p]) {
1617 moxaLowChkFlag[p] = 0;
1618 ofsAddr = moxaTableAddr[p];
1619 low_water_check(ofsAddr);
1620 }
1621 }
1622 }
1623 }
1624 moxaLowWaterChk = 0;
1625 return (0);
1626}
1627
1628/*****************************************************************************
1629 * Card level function: *
1630 * 1. MoxaPortsOfCard(int cardno); *
1631 *****************************************************************************/
1632int MoxaPortsOfCard(int cardno)
1633{
1634
1635 if (moxa_boards[cardno].boardType == 0)
1636 return (0);
1637 return (moxa_boards[cardno].numPorts);
1638}
1639
1640/*****************************************************************************
1641 * Port level functions: *
1642 * 1. MoxaPortIsValid(int port); *
1643 * 2. MoxaPortEnable(int port); *
1644 * 3. MoxaPortDisable(int port); *
1645 * 4. MoxaPortGetMaxBaud(int port); *
1da177e4 1646 * 6. MoxaPortSetBaud(int port, long baud); *
1da177e4
LT		 1647 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1648 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1649 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1650 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1651 * 12. MoxaPortLineStatus(int port); *
1652 * 13. MoxaPortDCDChange(int port); *
1653 * 14. MoxaPortDCDON(int port); *
1654 * 15. MoxaPortFlushData(int port, int mode); *
1655 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
33f0f88f 1656 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1da177e4
LT		 1657 * 20. MoxaPortTxQueue(int port); *
1658 * 21. MoxaPortTxFree(int port); *
1659 * 22. MoxaPortRxQueue(int port); *
1da177e4
LT		 1660 * 24. MoxaPortTxDisable(int port); *
1661 * 25. MoxaPortTxEnable(int port); *
1da177e4 1662 * 27. MoxaPortResetBrkCnt(int port); *
1da177e4
LT		 1663 * 30. MoxaPortSendBreak(int port, int ticks); *
1664 *****************************************************************************/
1665/*
1666 * Moxa Port Number Description:
1667 *
1668 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1669 * the port number using in MOXA driver functions will be 0 to 31 for
1670 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1671 * to 127 for fourth. For example, if you setup three MOXA boards,
1672 * first board is C218, second board is C320-16 and third board is
1673 * C320-32. The port number of first board (C218 - 8 ports) is from
1674 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1675 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1676 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1677 * 127 will be invalid.
1678 *
1679 *
1680 * Moxa Functions Description:
1681 *
1682 * Function 1: Driver initialization routine, this routine must be
1683 * called when initialized driver.
1684 * Syntax:
1685 * void MoxaDriverInit();
1686 *
1687 *
1688 * Function 2: Moxa driver private IOCTL command processing.
1689 * Syntax:
1690 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1691 *
1692 * unsigned int cmd : IOCTL command
1693 * unsigned long arg : IOCTL argument
1694 * int port : port number (0 - 127)
1695 *
1696 * return: 0 (OK)
1697 * -EINVAL
1698 * -ENOIOCTLCMD
1699 *
1700 *
1701 * Function 3: Moxa driver polling process routine.
1702 * Syntax:
1703 * int MoxaDriverPoll(void);
1704 *
1705 * return: 0 ; polling O.K.
1706 * -1 : no any Moxa card.
1707 *
1708 *
1709 * Function 4: Get the ports of this card.
1710 * Syntax:
1711 * int MoxaPortsOfCard(int cardno);
1712 *
1713 * int cardno : card number (0 - 3)
1714 *
1715 * return: 0 : this card is invalid
1716 * 8/16/24/32
1717 *
1718 *
1719 * Function 5: Check this port is valid or invalid
1720 * Syntax:
1721 * int MoxaPortIsValid(int port);
1722 * int port : port number (0 - 127, ref port description)
1723 *
1724 * return: 0 : this port is invalid
1725 * 1 : this port is valid
1726 *
1727 *
1728 * Function 6: Enable this port to start Tx/Rx data.
1729 * Syntax:
1730 * void MoxaPortEnable(int port);
1731 * int port : port number (0 - 127)
1732 *
1733 *
1734 * Function 7: Disable this port
1735 * Syntax:
1736 * void MoxaPortDisable(int port);
1737 * int port : port number (0 - 127)
1738 *
1739 *
1740 * Function 8: Get the maximun available baud rate of this port.
1741 * Syntax:
1742 * long MoxaPortGetMaxBaud(int port);
1743 * int port : port number (0 - 127)
1744 *
1745 * return: 0 : this port is invalid
1746 * 38400/57600/115200 bps
1747 *
1748 *
1da177e4
LT		 1749 * Function 10: Setting baud rate of this port.
1750 * Syntax:
1751 * long MoxaPortSetBaud(int port, long baud);
1752 * int port : port number (0 - 127)
1753 * long baud : baud rate (50 - 115200)
1754 *
1755 * return: 0 : this port is invalid or baud < 50
1756 * 50 - 115200 : the real baud rate set to the port, if
1757 * the argument baud is large than maximun
1758 * available baud rate, the real setting
1759 * baud rate will be the maximun baud rate.
1760 *
1761 *
1da177e4
LT		 1762 * Function 12: Configure the port.
1763 * Syntax:
606d099c 1764 * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud);
1da177e4 1765 * int port : port number (0 - 127)
606d099c 1766 * struct ktermios * termio : termio structure pointer
c7bce309 1767 * speed_t baud : baud rate
1da177e4
LT		 1768 *
1769 * return: -1 : this port is invalid or termio == NULL
1770 * 0 : setting O.K.
1771 *
1772 *
1773 * Function 13: Get the DTR/RTS state of this port.
1774 * Syntax:
1775 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1776 * int port : port number (0 - 127)
1777 * int * dtrState : pointer to INT to receive the current DTR
1778 * state. (if NULL, this function will not
1779 * write to this address)
1780 * int * rtsState : pointer to INT to receive the current RTS
1781 * state. (if NULL, this function will not
1782 * write to this address)
1783 *
1784 * return: -1 : this port is invalid
1785 * 0 : O.K.
1786 *
1787 *
1788 * Function 14: Setting the DTR/RTS output state of this port.
1789 * Syntax:
1790 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1791 * int port : port number (0 - 127)
1792 * int dtrState : DTR output state (0: off, 1: on)
1793 * int rtsState : RTS output state (0: off, 1: on)
1794 *
1795 *
1796 * Function 15: Setting the flow control of this port.
1797 * Syntax:
1798 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1799 * int txFlow,int xany);
1800 * int port : port number (0 - 127)
1801 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1802 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1803 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1804 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1805 * int xany : S/W XANY flow control (0: no, 1: yes)
1806 *
1807 *
1808 * Function 16: Get ths line status of this port
1809 * Syntax:
1810 * int MoxaPortLineStatus(int port);
1811 * int port : port number (0 - 127)
1812 *
1813 * return: Bit 0 - CTS state (0: off, 1: on)
1814 * Bit 1 - DSR state (0: off, 1: on)
1815 * Bit 2 - DCD state (0: off, 1: on)
1816 *
1817 *
1818 * Function 17: Check the DCD state has changed since the last read
1819 * of this function.
1820 * Syntax:
1821 * int MoxaPortDCDChange(int port);
1822 * int port : port number (0 - 127)
1823 *
1824 * return: 0 : no changed
1825 * 1 : DCD has changed
1826 *
1827 *
1828 * Function 18: Check ths current DCD state is ON or not.
1829 * Syntax:
1830 * int MoxaPortDCDON(int port);
1831 * int port : port number (0 - 127)
1832 *
1833 * return: 0 : DCD off
1834 * 1 : DCD on
1835 *
1836 *
1837 * Function 19: Flush the Rx/Tx buffer data of this port.
1838 * Syntax:
1839 * void MoxaPortFlushData(int port, int mode);
1840 * int port : port number (0 - 127)
1841 * int mode
1842 * 0 : flush the Rx buffer
1843 * 1 : flush the Tx buffer
1844 * 2 : flush the Rx and Tx buffer
1845 *
1846 *
1847 * Function 20: Write data.
1848 * Syntax:
1849 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
1850 * int port : port number (0 - 127)
1851 * unsigned char * buffer : pointer to write data buffer.
1852 * int length : write data length
1853 *
1854 * return: 0 - length : real write data length
1855 *
1856 *
1857 * Function 21: Read data.
1858 * Syntax:
33f0f88f 1859 * int MoxaPortReadData(int port, struct tty_struct *tty);
1da177e4 1860 * int port : port number (0 - 127)
33f0f88f 1861 * struct tty_struct *tty : tty for data
1da177e4
LT		 1862 *
1863 * return: 0 - length : real read data length
1864 *
1865 *
1da177e4
LT		 1866 * Function 24: Get the Tx buffer current queued data bytes
1867 * Syntax:
1868 * int MoxaPortTxQueue(int port);
1869 * int port : port number (0 - 127)
1870 *
1871 * return: .. : Tx buffer current queued data bytes
1872 *
1873 *
1874 * Function 25: Get the Tx buffer current free space
1875 * Syntax:
1876 * int MoxaPortTxFree(int port);
1877 * int port : port number (0 - 127)
1878 *
1879 * return: .. : Tx buffer current free space
1880 *
1881 *
1882 * Function 26: Get the Rx buffer current queued data bytes
1883 * Syntax:
1884 * int MoxaPortRxQueue(int port);
1885 * int port : port number (0 - 127)
1886 *
1887 * return: .. : Rx buffer current queued data bytes
1888 *
1889 *
1da177e4
LT		 1890 * Function 28: Disable port data transmission.
1891 * Syntax:
1892 * void MoxaPortTxDisable(int port);
1893 * int port : port number (0 - 127)
1894 *
1895 *
1896 * Function 29: Enable port data transmission.
1897 * Syntax:
1898 * void MoxaPortTxEnable(int port);
1899 * int port : port number (0 - 127)
1900 *
1901 *
1da177e4
LT		 1902 * Function 31: Get the received BREAK signal count and reset it.
1903 * Syntax:
1904 * int MoxaPortResetBrkCnt(int port);
1905 * int port : port number (0 - 127)
1906 *
1907 * return: 0 - .. : BREAK signal count
1908 *
1909 *
1da177e4
LT		 1910 * Function 34: Send out a BREAK signal.
1911 * Syntax:
1912 * void MoxaPortSendBreak(int port, int ms100);
1913 * int port : port number (0 - 127)
1914 * int ms100 : break signal time interval.
1915 * unit: 100 mini-second. if ms100 == 0, it will
1916 * send out a about 250 ms BREAK signal.
1917 *
1918 */
1919int MoxaPortIsValid(int port)
1920{
1921
1922 if (moxaCard == 0)
1923 return (0);
1924 if (moxaChkPort[port] == 0)
1925 return (0);
1926 return (1);
1927}
1928
1929void MoxaPortEnable(int port)
1930{
1931 void __iomem *ofsAddr;
1932 int MoxaPortLineStatus(int);
1933 short lowwater = 512;
1934
1935 ofsAddr = moxaTableAddr[port];
1936 writew(lowwater, ofsAddr + Low_water);
1937 moxaBreakCnt[port] = 0;
1938 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
1939 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
1940 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
1941 } else {
1942 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
1943 }
1944
1945 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
1946 moxafunc(ofsAddr, FC_FlushQueue, 2);
1947
1948 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
1949 MoxaPortLineStatus(port);
1950}
1951
1952void MoxaPortDisable(int port)
1953{
1954 void __iomem *ofsAddr = moxaTableAddr[port];
1955
1956 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
1957 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
1958 writew(0, ofsAddr + HostStat);
1959 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
1960}
1961
1962long MoxaPortGetMaxBaud(int port)
1963{
1964 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
1965 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
1966 return (460800L);
1967 else
1968 return (921600L);
1969}
1970
1971
1972long MoxaPortSetBaud(int port, long baud)
1973{
1974 void __iomem *ofsAddr;
1975 long max, clock;
1976 unsigned int val;
1977
1978 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
1979 return (0);
1980 ofsAddr = moxaTableAddr[port];
1981 if (baud > max)
1982 baud = max;
1983 if (max == 38400L)
1984 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
1985 else if (max == 57600L)
1986 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
1987 else
1988 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
1989 val = clock / baud;
1990 moxafunc(ofsAddr, FC_SetBaud, val);
1991 baud = clock / val;
1992 moxaCurBaud[port] = baud;
1993 return (baud);
1994}
1995
606d099c 1996int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud)
1da177e4
LT		 1997{
1998 void __iomem *ofsAddr;
1999 tcflag_t cflag;
1da177e4
LT		 2000 tcflag_t mode = 0;
2001
2002 if (moxaChkPort[port] == 0 || termio == 0)
2003 return (-1);
2004 ofsAddr = moxaTableAddr[port];
2005 cflag = termio->c_cflag; /* termio->c_cflag */
2006
2007 mode = termio->c_cflag & CSIZE;
2008 if (mode == CS5)
2009 mode = MX_CS5;
2010 else if (mode == CS6)
2011 mode = MX_CS6;
2012 else if (mode == CS7)
2013 mode = MX_CS7;
2014 else if (mode == CS8)
2015 mode = MX_CS8;
2016
2017 if (termio->c_cflag & CSTOPB) {
2018 if (mode == MX_CS5)
2019 mode |= MX_STOP15;
2020 else
2021 mode |= MX_STOP2;
2022 } else
2023 mode |= MX_STOP1;
2024
2025 if (termio->c_cflag & PARENB) {
2026 if (termio->c_cflag & PARODD)
2027 mode |= MX_PARODD;
2028 else
2029 mode |= MX_PAREVEN;
2030 } else
2031 mode |= MX_PARNONE;
2032
2033 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2034
1da177e4
LT		 2035 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2036 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
c7bce309 2037 if (baud >= 921600L)
1da177e4
LT		 2038 return (-1);
2039 }
2040 MoxaPortSetBaud(port, baud);
2041
2042 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2043 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2044 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2045 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2046 wait_finish(ofsAddr);
2047
2048 }
2049 return (0);
2050}
2051
2052int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2053{
2054
2055 if (!MoxaPortIsValid(port))
2056 return (-1);
2057 if (dtrState) {
2058 if (moxaLineCtrl[port] & DTR_ON)
2059 *dtrState = 1;
2060 else
2061 *dtrState = 0;
2062 }
2063 if (rtsState) {
2064 if (moxaLineCtrl[port] & RTS_ON)
2065 *rtsState = 1;
2066 else
2067 *rtsState = 0;
2068 }
2069 return (0);
2070}
2071
2072void MoxaPortLineCtrl(int port, int dtr, int rts)
2073{
2074 void __iomem *ofsAddr;
2075 int mode;
2076
2077 ofsAddr = moxaTableAddr[port];
2078 mode = 0;
2079 if (dtr)
2080 mode |= DTR_ON;
2081 if (rts)
2082 mode |= RTS_ON;
2083 moxaLineCtrl[port] = mode;
2084 moxafunc(ofsAddr, FC_LineControl, mode);
2085}
2086
2087void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2088{
2089 void __iomem *ofsAddr;
2090 int mode;
2091
2092 ofsAddr = moxaTableAddr[port];
2093 mode = 0;
2094 if (rts)
2095 mode |= RTS_FlowCtl;
2096 if (cts)
2097 mode |= CTS_FlowCtl;
2098 if (txflow)
2099 mode |= Tx_FlowCtl;
2100 if (rxflow)
2101 mode |= Rx_FlowCtl;
2102 if (txany)
2103 mode |= IXM_IXANY;
2104 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2105}
2106
2107int MoxaPortLineStatus(int port)
2108{
2109 void __iomem *ofsAddr;
2110 int val;
2111
2112 ofsAddr = moxaTableAddr[port];
2113 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2114 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2115 moxafunc(ofsAddr, FC_LineStatus, 0);
2116 val = readw(ofsAddr + FuncArg);
2117 } else {
2118 val = readw(ofsAddr + FlagStat) >> 4;
2119 }
2120 val &= 0x0B;
2121 if (val & 8) {
2122 val |= 4;
2123 if ((moxaDCDState[port] & DCD_oldstate) == 0)
2124 moxaDCDState[port] = (DCD_oldstate | DCD_changed);
2125 } else {
2126 if (moxaDCDState[port] & DCD_oldstate)
2127 moxaDCDState[port] = DCD_changed;
2128 }
2129 val &= 7;
2130 return (val);
2131}
2132
2133int MoxaPortDCDChange(int port)
2134{
2135 int n;
2136
2137 if (moxaChkPort[port] == 0)
2138 return (0);
2139 n = moxaDCDState[port];
2140 moxaDCDState[port] &= ~DCD_changed;
2141 n &= DCD_changed;
2142 return (n);
2143}
2144
2145int MoxaPortDCDON(int port)
2146{
2147 int n;
2148
2149 if (moxaChkPort[port] == 0)
2150 return (0);
2151 if (moxaDCDState[port] & DCD_oldstate)
2152 n = 1;
2153 else
2154 n = 0;
2155 return (n);
2156}
2157
1da177e4
LT		 2158int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2159{
2160 int c, total, i;
2161 ushort tail;
2162 int cnt;
2163 ushort head, tx_mask, spage, epage;
2164 ushort pageno, pageofs, bufhead;
2165 void __iomem *baseAddr, *ofsAddr, *ofs;
2166
2167 ofsAddr = moxaTableAddr[port];
2168 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2169 tx_mask = readw(ofsAddr + TX_mask);
2170 spage = readw(ofsAddr + Page_txb);
2171 epage = readw(ofsAddr + EndPage_txb);
2172 tail = readw(ofsAddr + TXwptr);
2173 head = readw(ofsAddr + TXrptr);
2174 c = (head > tail) ? (head - tail - 1)
2175 : (head - tail + tx_mask);
2176 if (c > len)
2177 c = len;
2178 moxaLog.txcnt[port] += c;
2179 total = c;
2180 if (spage == epage) {
2181 bufhead = readw(ofsAddr + Ofs_txb);
2182 writew(spage, baseAddr + Control_reg);
2183 while (c > 0) {
2184 if (head > tail)
2185 len = head - tail - 1;
2186 else
2187 len = tx_mask + 1 - tail;
2188 len = (c > len) ? len : c;
2189 ofs = baseAddr + DynPage_addr + bufhead + tail;
2190 for (i = 0; i < len; i++)
2191 writeb(*buffer++, ofs + i);
2192 tail = (tail + len) & tx_mask;
2193 c -= len;
2194 }
2195 writew(tail, ofsAddr + TXwptr);
2196 } else {
2197 len = c;
2198 pageno = spage + (tail >> 13);
2199 pageofs = tail & Page_mask;
2200 do {
2201 cnt = Page_size - pageofs;
2202 if (cnt > c)
2203 cnt = c;
2204 c -= cnt;
2205 writeb(pageno, baseAddr + Control_reg);
2206 ofs = baseAddr + DynPage_addr + pageofs;
2207 for (i = 0; i < cnt; i++)
2208 writeb(*buffer++, ofs + i);
2209 if (c == 0) {
2210 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2211 break;
2212 }
2213 if (++pageno == epage)
2214 pageno = spage;
2215 pageofs = 0;
2216 } while (1);
2217 }
2218 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2219 return (total);
2220}
2221
33f0f88f 2222int MoxaPortReadData(int port, struct tty_struct *tty)
1da177e4
LT		 2223{
2224 register ushort head, pageofs;
2225 int i, count, cnt, len, total, remain;
2226 ushort tail, rx_mask, spage, epage;
2227 ushort pageno, bufhead;
2228 void __iomem *baseAddr, *ofsAddr, *ofs;
2229
2230 ofsAddr = moxaTableAddr[port];
2231 baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
2232 head = readw(ofsAddr + RXrptr);
2233 tail = readw(ofsAddr + RXwptr);
2234 rx_mask = readw(ofsAddr + RX_mask);
2235 spage = readw(ofsAddr + Page_rxb);
2236 epage = readw(ofsAddr + EndPage_rxb);
2237 count = (tail >= head) ? (tail - head)
2238 : (tail - head + rx_mask + 1);
2239 if (count == 0)
33f0f88f 2240 return 0;
1da177e4 2241
33f0f88f 2242 total = count;
1da177e4
LT		 2243 remain = count - total;
2244 moxaLog.rxcnt[port] += total;
2245 count = total;
2246 if (spage == epage) {
2247 bufhead = readw(ofsAddr + Ofs_rxb);
2248 writew(spage, baseAddr + Control_reg);
2249 while (count > 0) {
2250 if (tail >= head)
2251 len = tail - head;
2252 else
2253 len = rx_mask + 1 - head;
2254 len = (count > len) ? len : count;
2255 ofs = baseAddr + DynPage_addr + bufhead + head;
2256 for (i = 0; i < len; i++)
33f0f88f 2257 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
1da177e4
LT		 2258 head = (head + len) & rx_mask;
2259 count -= len;
2260 }
2261 writew(head, ofsAddr + RXrptr);
2262 } else {
2263 len = count;
2264 pageno = spage + (head >> 13);
2265 pageofs = head & Page_mask;
2266 do {
2267 cnt = Page_size - pageofs;
2268 if (cnt > count)
2269 cnt = count;
2270 count -= cnt;
2271 writew(pageno, baseAddr + Control_reg);
2272 ofs = baseAddr + DynPage_addr + pageofs;
2273 for (i = 0; i < cnt; i++)
33f0f88f 2274 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
1da177e4
LT		 2275 if (count == 0) {
2276 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2277 break;
2278 }
2279 if (++pageno == epage)
2280 pageno = spage;
2281 pageofs = 0;
2282 } while (1);
2283 }
2284 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2285 moxaLowWaterChk = 1;
2286 moxaLowChkFlag[port] = 1;
2287 }
2288 return (total);
2289}
2290
2291
2292int MoxaPortTxQueue(int port)
2293{
2294 void __iomem *ofsAddr;
2295 ushort rptr, wptr, mask;
2296 int len;
2297
2298 ofsAddr = moxaTableAddr[port];
2299 rptr = readw(ofsAddr + TXrptr);
2300 wptr = readw(ofsAddr + TXwptr);
2301 mask = readw(ofsAddr + TX_mask);
2302 len = (wptr - rptr) & mask;
2303 return (len);
2304}
2305
2306int MoxaPortTxFree(int port)
2307{
2308 void __iomem *ofsAddr;
2309 ushort rptr, wptr, mask;
2310 int len;
2311
2312 ofsAddr = moxaTableAddr[port];
2313 rptr = readw(ofsAddr + TXrptr);
2314 wptr = readw(ofsAddr + TXwptr);
2315 mask = readw(ofsAddr + TX_mask);
2316 len = mask - ((wptr - rptr) & mask);
2317 return (len);
2318}
2319
2320int MoxaPortRxQueue(int port)
2321{
2322 void __iomem *ofsAddr;
2323 ushort rptr, wptr, mask;
2324 int len;
2325
2326 ofsAddr = moxaTableAddr[port];
2327 rptr = readw(ofsAddr + RXrptr);
2328 wptr = readw(ofsAddr + RXwptr);
2329 mask = readw(ofsAddr + RX_mask);
2330 len = (wptr - rptr) & mask;
2331 return (len);
2332}
2333
2334
2335void MoxaPortTxDisable(int port)
2336{
2337 void __iomem *ofsAddr;
2338
2339 ofsAddr = moxaTableAddr[port];
2340 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2341}
2342
2343void MoxaPortTxEnable(int port)
2344{
2345 void __iomem *ofsAddr;
2346
2347 ofsAddr = moxaTableAddr[port];
2348 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2349}
2350
2351
2352int MoxaPortResetBrkCnt(int port)
2353{
2354 ushort cnt;
2355 cnt = moxaBreakCnt[port];
2356 moxaBreakCnt[port] = 0;
2357 return (cnt);
2358}
2359
2360
2361void MoxaPortSendBreak(int port, int ms100)
2362{
2363 void __iomem *ofsAddr;
2364
2365 ofsAddr = moxaTableAddr[port];
2366 if (ms100) {
2367 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2368 moxadelay(ms100 * (HZ / 10));
2369 } else {
2370 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2371 moxadelay(HZ / 4); /* 250 ms */
2372 }
2373 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2374}
2375
2376static int moxa_get_serial_info(struct moxa_str *info,
2377 struct serial_struct __user *retinfo)
2378{
2379 struct serial_struct tmp;
2380
2381 memset(&tmp, 0, sizeof(tmp));
2382 tmp.type = info->type;
2383 tmp.line = info->port;
2384 tmp.port = 0;
2385 tmp.irq = 0;
2386 tmp.flags = info->asyncflags;
2387 tmp.baud_base = 921600;
2388 tmp.close_delay = info->close_delay;
2389 tmp.closing_wait = info->closing_wait;
2390 tmp.custom_divisor = 0;
2391 tmp.hub6 = 0;
2392 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2393 return -EFAULT;
2394 return (0);
2395}
2396
2397
2398static int moxa_set_serial_info(struct moxa_str *info,
2399 struct serial_struct __user *new_info)
2400{
2401 struct serial_struct new_serial;
2402
2403 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2404 return -EFAULT;
2405
2406 if ((new_serial.irq != 0) ||
2407 (new_serial.port != 0) ||
2408// (new_serial.type != info->type) ||
2409 (new_serial.custom_divisor != 0) ||
2410 (new_serial.baud_base != 921600))
2411 return (-EPERM);
2412
2413 if (!capable(CAP_SYS_ADMIN)) {
2414 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2415 (info->asyncflags & ~ASYNC_USR_MASK)))
2416 return (-EPERM);
2417 } else {
2418 info->close_delay = new_serial.close_delay * HZ / 100;
2419 info->closing_wait = new_serial.closing_wait * HZ / 100;
2420 }
2421
2422 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2423 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2424
2425 if (new_serial.type == PORT_16550A) {
2426 MoxaSetFifo(info->port, 1);
2427 } else {
2428 MoxaSetFifo(info->port, 0);
2429 }
2430
2431 info->type = new_serial.type;
2432 return (0);
2433}
2434
2435
2436
2437/*****************************************************************************
2438 * Static local functions: *
2439 *****************************************************************************/
2440/*
2441 * moxadelay - delays a specified number ticks
2442 */
2443static void moxadelay(int tick)
2444{
2445 unsigned long st, et;
2446
2447 st = jiffies;
2448 et = st + tick;
2449 while (time_before(jiffies, et));
2450}
2451
2452static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
2453{
2454
2455 writew(arg, ofsAddr + FuncArg);
2456 writew(cmd, ofsAddr + FuncCode);
2457 wait_finish(ofsAddr);
2458}
2459
2460static void wait_finish(void __iomem *ofsAddr)
2461{
2462 unsigned long i, j;
2463
2464 i = jiffies;
2465 while (readw(ofsAddr + FuncCode) != 0) {
2466 j = jiffies;
2467 if ((j - i) > moxaFuncTout) {
2468 return;
2469 }
2470 }
2471}
2472
2473static void low_water_check(void __iomem *ofsAddr)
2474{
2475 int len;
2476 ushort rptr, wptr, mask;
2477
2478 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2479 rptr = readw(ofsAddr + RXrptr);
2480 wptr = readw(ofsAddr + RXwptr);
2481 mask = readw(ofsAddr + RX_mask);
2482 len = (wptr - rptr) & mask;
2483 if (len <= Low_water)
2484 moxafunc(ofsAddr, FC_SendXon, 0);
2485 }
2486}
2487
2488static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2489{
2490 void __iomem *baseAddr;
2491 int i;
2492
2493 if(copy_from_user(moxaBuff, tmp, len))
2494 return -EFAULT;
2495 baseAddr = moxaBaseAddr[cardno];
2496 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2497 moxadelay(1); /* delay 10 ms */
2498 for (i = 0; i < 4096; i++)
2499 writeb(0, baseAddr + i); /* clear fix page */
2500 for (i = 0; i < len; i++)
2501 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2502 writeb(0, baseAddr + Control_reg); /* restart */
2503 return (0);
2504}
2505
2506static int moxafindcard(int cardno)
2507{
2508 void __iomem *baseAddr;
2509 ushort tmp;
2510
2511 baseAddr = moxaBaseAddr[cardno];
2512 switch (moxa_boards[cardno].boardType) {
2513 case MOXA_BOARD_C218_ISA:
2514 case MOXA_BOARD_C218_PCI:
2515 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2516 return (-1);
2517 }
2518 break;
2519 case MOXA_BOARD_CP204J:
2520 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2521 return (-1);
2522 }
2523 break;
2524 default:
2525 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2526 return (-1);
2527 }
2528 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2529 return (-2);
2530 }
2531 }
2532 return (0);
2533}
2534
2535static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2536{
2537 void __iomem *baseAddr;
2538 int i;
2539
2540 if(len > sizeof(moxaBuff))
2541 return -EINVAL;
2542 if(copy_from_user(moxaBuff, tmp, len))
2543 return -EFAULT;
2544 baseAddr = moxaBaseAddr[cardno];
2545 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2546 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2547 for (i = 0; i < 7168; i++)
2548 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2549 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2550 for (i = 0; i < (len - 7168); i++)
2551 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2552 return (0);
2553}
2554
2555static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2556{
2557 void __iomem *baseAddr, *ofsAddr;
2558 int retval, port, i;
2559
2560 if(copy_from_user(moxaBuff, tmp, len))
2561 return -EFAULT;
2562 baseAddr = moxaBaseAddr[cardno];
2563 switch (moxa_boards[cardno].boardType) {
2564 case MOXA_BOARD_C218_ISA:
2565 case MOXA_BOARD_C218_PCI:
2566 case MOXA_BOARD_CP204J:
2567 retval = moxaloadc218(cardno, baseAddr, len);
2568 if (retval)
2569 return (retval);
2570 port = cardno * MAX_PORTS_PER_BOARD;
2571 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2572 moxaChkPort[port] = 1;
2573 moxaCurBaud[port] = 9600L;
2574 moxaDCDState[port] = 0;
2575 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2576 ofsAddr = moxaTableAddr[port];
2577 writew(C218rx_mask, ofsAddr + RX_mask);
2578 writew(C218tx_mask, ofsAddr + TX_mask);
2579 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2580 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2581
2582 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2583 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2584
2585 }
2586 break;
2587 default:
2588 retval = moxaloadc320(cardno, baseAddr, len,
2589 &moxa_boards[cardno].numPorts);
2590 if (retval)
2591 return (retval);
2592 port = cardno * MAX_PORTS_PER_BOARD;
2593 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2594 moxaChkPort[port] = 1;
2595 moxaCurBaud[port] = 9600L;
2596 moxaDCDState[port] = 0;
2597 moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
2598 ofsAddr = moxaTableAddr[port];
2599 if (moxa_boards[cardno].numPorts == 8) {
2600 writew(C320p8rx_mask, ofsAddr + RX_mask);
2601 writew(C320p8tx_mask, ofsAddr + TX_mask);
2602 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2603 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2604 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2605 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2606
2607 } else if (moxa_boards[cardno].numPorts == 16) {
2608 writew(C320p16rx_mask, ofsAddr + RX_mask);
2609 writew(C320p16tx_mask, ofsAddr + TX_mask);
2610 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2611 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2612 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2613 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2614
2615 } else if (moxa_boards[cardno].numPorts == 24) {
2616 writew(C320p24rx_mask, ofsAddr + RX_mask);
2617 writew(C320p24tx_mask, ofsAddr + TX_mask);
2618 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2619 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2620 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2621 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2622 } else if (moxa_boards[cardno].numPorts == 32) {
2623 writew(C320p32rx_mask, ofsAddr + RX_mask);
2624 writew(C320p32tx_mask, ofsAddr + TX_mask);
2625 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2626 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2627 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2628 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2629 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2630 }
2631 }
2632 break;
2633 }
01cfaf0d 2634 loadstat[cardno] = 1;
1da177e4
LT		 2635 return (0);
2636}
2637
2638static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
2639{
2640 char retry;
2641 int i, j, len1, len2;
2642 ushort usum, *ptr, keycode;
2643
2644 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2645 keycode = CP204J_KeyCode;
2646 else
2647 keycode = C218_KeyCode;
2648 usum = 0;
2649 len1 = len >> 1;
2650 ptr = (ushort *) moxaBuff;
2651 for (i = 0; i < len1; i++)
01cfaf0d 2652 usum += le16_to_cpu(*(ptr + i));
1da177e4
LT		 2653 retry = 0;
2654 do {
2655 len1 = len >> 1;
2656 j = 0;
2657 while (len1) {
2658 len2 = (len1 > 2048) ? 2048 : len1;
2659 len1 -= len2;
2660 for (i = 0; i < len2 << 1; i++)
2661 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2662 j += i;
2663
2664 writew(len2, baseAddr + C218DLoad_len);
2665 writew(0, baseAddr + C218_key);
2666 for (i = 0; i < 100; i++) {
2667 if (readw(baseAddr + C218_key) == keycode)
2668 break;
2669 moxadelay(1); /* delay 10 ms */
2670 }
2671 if (readw(baseAddr + C218_key) != keycode) {
2672 return (-1);
2673 }
2674 }
2675 writew(0, baseAddr + C218DLoad_len);
2676 writew(usum, baseAddr + C218check_sum);
2677 writew(0, baseAddr + C218_key);
2678 for (i = 0; i < 100; i++) {
2679 if (readw(baseAddr + C218_key) == keycode)
2680 break;
2681 moxadelay(1); /* delay 10 ms */
2682 }
2683 retry++;
2684 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2685 if (readb(baseAddr + C218chksum_ok) != 1) {
2686 return (-1);
2687 }
2688 writew(0, baseAddr + C218_key);
2689 for (i = 0; i < 100; i++) {
2690 if (readw(baseAddr + Magic_no) == Magic_code)
2691 break;
2692 moxadelay(1); /* delay 10 ms */
2693 }
2694 if (readw(baseAddr + Magic_no) != Magic_code) {
2695 return (-1);
2696 }
2697 writew(1, baseAddr + Disable_IRQ);
2698 writew(0, baseAddr + Magic_no);
2699 for (i = 0; i < 100; i++) {
2700 if (readw(baseAddr + Magic_no) == Magic_code)
2701 break;
2702 moxadelay(1); /* delay 10 ms */
2703 }
2704 if (readw(baseAddr + Magic_no) != Magic_code) {
2705 return (-1);
2706 }
2707 moxaCard = 1;
2708 moxaIntNdx[cardno] = baseAddr + IRQindex;
2709 moxaIntPend[cardno] = baseAddr + IRQpending;
2710 moxaIntTable[cardno] = baseAddr + IRQtable;
2711 return (0);
2712}
2713
2714static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
2715{
2716 ushort usum;
2717 int i, j, wlen, len2, retry;
2718 ushort *uptr;
2719
2720 usum = 0;
2721 wlen = len >> 1;
2722 uptr = (ushort *) moxaBuff;
2723 for (i = 0; i < wlen; i++)
01cfaf0d 2724 usum += le16_to_cpu(uptr[i]);
1da177e4
LT		 2725 retry = 0;
2726 j = 0;
2727 do {
2728 while (wlen) {
2729 if (wlen > 2048)
2730 len2 = 2048;
2731 else
2732 len2 = wlen;
2733 wlen -= len2;
2734 len2 <<= 1;
2735 for (i = 0; i < len2; i++)
2736 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
2737 len2 >>= 1;
2738 j += i;
2739 writew(len2, baseAddr + C320DLoad_len);
2740 writew(0, baseAddr + C320_key);
2741 for (i = 0; i < 10; i++) {
2742 if (readw(baseAddr + C320_key) == C320_KeyCode)
2743 break;
2744 moxadelay(1);
2745 }
2746 if (readw(baseAddr + C320_key) != C320_KeyCode)
2747 return (-1);
2748 }
2749 writew(0, baseAddr + C320DLoad_len);
2750 writew(usum, baseAddr + C320check_sum);
2751 writew(0, baseAddr + C320_key);
2752 for (i = 0; i < 10; i++) {
2753 if (readw(baseAddr + C320_key) == C320_KeyCode)
2754 break;
2755 moxadelay(1);
2756 }
2757 retry++;
2758 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
2759 if (readb(baseAddr + C320chksum_ok) != 1)
2760 return (-1);
2761 writew(0, baseAddr + C320_key);
2762 for (i = 0; i < 600; i++) {
2763 if (readw(baseAddr + Magic_no) == Magic_code)
2764 break;
2765 moxadelay(1);
2766 }
2767 if (readw(baseAddr + Magic_no) != Magic_code)
2768 return (-100);
2769
2770 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
2771 writew(0x3800, baseAddr + TMS320_PORT1);
2772 writew(0x3900, baseAddr + TMS320_PORT2);
2773 writew(28499, baseAddr + TMS320_CLOCK);
2774 } else {
2775 writew(0x3200, baseAddr + TMS320_PORT1);
2776 writew(0x3400, baseAddr + TMS320_PORT2);
2777 writew(19999, baseAddr + TMS320_CLOCK);
2778 }
2779 writew(1, baseAddr + Disable_IRQ);
2780 writew(0, baseAddr + Magic_no);
2781 for (i = 0; i < 500; i++) {
2782 if (readw(baseAddr + Magic_no) == Magic_code)
2783 break;
2784 moxadelay(1);
2785 }
2786 if (readw(baseAddr + Magic_no) != Magic_code)
2787 return (-102);
2788
2789 j = readw(baseAddr + Module_cnt);
2790 if (j <= 0)
2791 return (-101);
2792 *numPorts = j * 8;
2793 writew(j, baseAddr + Module_no);
2794 writew(0, baseAddr + Magic_no);
2795 for (i = 0; i < 600; i++) {
2796 if (readw(baseAddr + Magic_no) == Magic_code)
2797 break;
2798 moxadelay(1);
2799 }
2800 if (readw(baseAddr + Magic_no) != Magic_code)
2801 return (-102);
2802 moxaCard = 1;
2803 moxaIntNdx[cardno] = baseAddr + IRQindex;
2804 moxaIntPend[cardno] = baseAddr + IRQpending;
2805 moxaIntTable[cardno] = baseAddr + IRQtable;
2806 return (0);
2807}
2808
1da177e4
LT		 2809static void MoxaSetFifo(int port, int enable)
2810{
2811 void __iomem *ofsAddr = moxaTableAddr[port];
2812
2813 if (!enable) {
2814 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
2815 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
2816 } else {
2817 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
2818 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
2819 }
2820}
Linux kernel - Deliverables
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