projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Char: moxa, fix TIOC(G/S)SOFTCAR param
[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>
95e07914 44#include <linux/completion.h>
1da177e4
LT		 45
46#include <asm/system.h>
47#include <asm/io.h>
48#include <asm/uaccess.h>
49
11324edd 50#define MOXA_VERSION "5.1k"
1da177e4 51
11324edd
JS		 52#define MOXAMAJOR 172
53#define MOXACUMAJOR 173
1da177e4 54
11324edd 55#define MAX_BOARDS 4 /* Don't change this value */
1da177e4 56#define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
11324edd 57#define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD)
1da177e4
LT		 58
59/*
60 * Define the Moxa PCI vendor and device IDs.
61 */
11324edd
JS		 62#define MOXA_BUS_TYPE_ISA 0
63#define MOXA_BUS_TYPE_PCI 1
1da177e4 64
1da177e4
LT		 65enum {
66 MOXA_BOARD_C218_PCI = 1,
67 MOXA_BOARD_C218_ISA,
68 MOXA_BOARD_C320_PCI,
69 MOXA_BOARD_C320_ISA,
70 MOXA_BOARD_CP204J,
71};
72
73static char *moxa_brdname[] =
74{
75 "C218 Turbo PCI series",
76 "C218 Turbo ISA series",
77 "C320 Turbo PCI series",
78 "C320 Turbo ISA series",
79 "CP-204J series",
80};
81
82#ifdef CONFIG_PCI
83static struct pci_device_id moxa_pcibrds[] = {
5ebb4078
JS		 84 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218),
85 .driver_data = MOXA_BOARD_C218_PCI },
86 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320),
87 .driver_data = MOXA_BOARD_C320_PCI },
88 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J),
89 .driver_data = MOXA_BOARD_CP204J },
1da177e4
LT		 90 { 0 }
91};
92MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
93#endif /* CONFIG_PCI */
94
8f8ecbad 95static struct moxa_board_conf {
1da177e4
LT		 96 int boardType;
97 int numPorts;
1da177e4 98 int busType;
8f8ecbad
JS		 99
100 int loadstat;
101
102 void __iomem *basemem;
103 void __iomem *intNdx;
104 void __iomem *intPend;
105 void __iomem *intTable;
106} moxa_boards[MAX_BOARDS];
107
108struct mxser_mstatus {
109 tcflag_t cflag;
110 int cts;
111 int dsr;
112 int ri;
113 int dcd;
9dff89cd 114};
1da177e4 115
8f8ecbad
JS		 116struct moxaq_str {
117 int inq;
118 int outq;
119};
1da177e4 120
8f8ecbad 121struct moxa_port {
1da177e4
LT		 122 int type;
123 int port;
124 int close_delay;
125 unsigned short closing_wait;
126 int count;
127 int blocked_open;
128 long event; /* long req'd for set_bit --RR */
129 int asyncflags;
130 unsigned long statusflags;
131 struct tty_struct *tty;
132 int cflag;
133 wait_queue_head_t open_wait;
95e07914 134 struct completion close_wait;
1da177e4 135
8f8ecbad 136 struct timer_list emptyTimer;
1da177e4 137
8f8ecbad
JS		 138 char chkPort;
139 char lineCtrl;
140 void __iomem *tableAddr;
141 long curBaud;
142 char DCDState;
143 char lowChkFlag;
144
145 ushort breakCnt;
146};
1da177e4
LT		 147
148/* statusflags */
149#define TXSTOPPED 0x1
150#define LOWWAIT 0x2
151#define EMPTYWAIT 0x4
152#define THROTTLE 0x8
153
1da177e4
LT		 154#define SERIAL_DO_RESTART
155
1da177e4
LT		 156#define WAKEUP_CHARS 256
157
1da177e4
LT		 158static int ttymajor = MOXAMAJOR;
159/* Variables for insmod */
160#ifdef MODULE
d353eca4
JS		 161static unsigned long baseaddr[MAX_BOARDS];
162static unsigned int type[MAX_BOARDS];
163static unsigned int numports[MAX_BOARDS];
1da177e4
LT		 164#endif
165
166MODULE_AUTHOR("William Chen");
167MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
168MODULE_LICENSE("GPL");
169#ifdef MODULE
d353eca4
JS		 170module_param_array(type, uint, NULL, 0);
171MODULE_PARM_DESC(type, "card type: C218=2, C320=4");
172module_param_array(baseaddr, ulong, NULL, 0);
173MODULE_PARM_DESC(baseaddr, "base address");
174module_param_array(numports, uint, NULL, 0);
175MODULE_PARM_DESC(numports, "numports (ignored for C218)");
1da177e4
LT		 176#endif
177module_param(ttymajor, int, 0);
1da177e4 178
1da177e4
LT		 179/*
180 * static functions:
181 */
1da177e4
LT		 182static int moxa_open(struct tty_struct *, struct file *);
183static void moxa_close(struct tty_struct *, struct file *);
184static int moxa_write(struct tty_struct *, const unsigned char *, int);
185static int moxa_write_room(struct tty_struct *);
186static void moxa_flush_buffer(struct tty_struct *);
187static int moxa_chars_in_buffer(struct tty_struct *);
188static void moxa_flush_chars(struct tty_struct *);
189static void moxa_put_char(struct tty_struct *, unsigned char);
190static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
191static void moxa_throttle(struct tty_struct *);
192static void moxa_unthrottle(struct tty_struct *);
606d099c 193static void moxa_set_termios(struct tty_struct *, struct ktermios *);
1da177e4
LT		 194static void moxa_stop(struct tty_struct *);
195static void moxa_start(struct tty_struct *);
196static void moxa_hangup(struct tty_struct *);
197static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
198static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
199 unsigned int set, unsigned int clear);
200static void moxa_poll(unsigned long);
db1acaa6 201static void moxa_set_tty_param(struct tty_struct *, struct ktermios *);
6f56b658 202static int moxa_block_till_ready(struct tty_struct *, struct file *,
8f8ecbad 203 struct moxa_port *);
6f56b658
JS		 204static void moxa_setup_empty_event(struct tty_struct *);
205static void moxa_check_xmit_empty(unsigned long);
206static void moxa_shut_down(struct moxa_port *);
207static void moxa_receive_data(struct moxa_port *);
1da177e4
LT		 208/*
209 * moxa board interface functions:
210 */
211static void MoxaDriverInit(void);
212static int MoxaDriverIoctl(unsigned int, unsigned long, int);
213static int MoxaDriverPoll(void);
214static int MoxaPortsOfCard(int);
215static int MoxaPortIsValid(int);
216static void MoxaPortEnable(int);
217static void MoxaPortDisable(int);
218static long MoxaPortGetMaxBaud(int);
219static long MoxaPortSetBaud(int, long);
606d099c 220static int MoxaPortSetTermio(int, struct ktermios *, speed_t);
1da177e4
LT		 221static int MoxaPortGetLineOut(int, int *, int *);
222static void MoxaPortLineCtrl(int, int, int);
223static void MoxaPortFlowCtrl(int, int, int, int, int, int);
224static int MoxaPortLineStatus(int);
225static int MoxaPortDCDChange(int);
226static int MoxaPortDCDON(int);
227static void MoxaPortFlushData(int, int);
228static int MoxaPortWriteData(int, unsigned char *, int);
33f0f88f 229static int MoxaPortReadData(int, struct tty_struct *tty);
1da177e4
LT		 230static int MoxaPortTxQueue(int);
231static int MoxaPortRxQueue(int);
232static int MoxaPortTxFree(int);
233static void MoxaPortTxDisable(int);
234static void MoxaPortTxEnable(int);
235static int MoxaPortResetBrkCnt(int);
236static void MoxaPortSendBreak(int, int);
8f8ecbad
JS		 237static int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *);
238static int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *);
1da177e4
LT		 239static void MoxaSetFifo(int port, int enable);
240
b68e31d0 241static const struct tty_operations moxa_ops = {
1da177e4
LT		 242 .open = moxa_open,
243 .close = moxa_close,
244 .write = moxa_write,
245 .write_room = moxa_write_room,
246 .flush_buffer = moxa_flush_buffer,
247 .chars_in_buffer = moxa_chars_in_buffer,
248 .flush_chars = moxa_flush_chars,
249 .put_char = moxa_put_char,
250 .ioctl = moxa_ioctl,
251 .throttle = moxa_throttle,
252 .unthrottle = moxa_unthrottle,
253 .set_termios = moxa_set_termios,
254 .stop = moxa_stop,
255 .start = moxa_start,
256 .hangup = moxa_hangup,
257 .tiocmget = moxa_tiocmget,
258 .tiocmset = moxa_tiocmset,
259};
260
aa7e5221 261static struct tty_driver *moxaDriver;
8f8ecbad 262static struct moxa_port moxa_ports[MAX_PORTS];
aa7e5221 263static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0);
34af946a 264static DEFINE_SPINLOCK(moxa_lock);
33f0f88f 265
1da177e4 266#ifdef CONFIG_PCI
9cde5bf0
JS		 267static int __devinit moxa_pci_probe(struct pci_dev *pdev,
268 const struct pci_device_id *ent)
1da177e4 269{
9cde5bf0
JS		 270 struct moxa_board_conf *board;
271 unsigned int i;
272 int board_type = ent->driver_data;
273 int retval;
274
275 retval = pci_enable_device(pdev);
7aeb95da
JS		 276 if (retval) {
277 dev_err(&pdev->dev, "can't enable pci device\n");
9cde5bf0 278 goto err;
7aeb95da 279 }
9cde5bf0
JS		 280
281 for (i = 0; i < MAX_BOARDS; i++)
282 if (moxa_boards[i].basemem == NULL)
283 break;
284
285 retval = -ENODEV;
286 if (i >= MAX_BOARDS) {
7aeb95da 287 dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards "
9cde5bf0
JS		 288 "found. Board is ignored.\n", MAX_BOARDS);
289 goto err;
290 }
291
292 board = &moxa_boards[i];
e46a5e3f
JS		 293
294 retval = pci_request_region(pdev, 2, "moxa-base");
295 if (retval) {
296 dev_err(&pdev->dev, "can't request pci region 2\n");
297 goto err;
298 }
299
300 board->basemem = ioremap(pci_resource_start(pdev, 2), 0x4000);
7aeb95da
JS		 301 if (board->basemem == NULL) {
302 dev_err(&pdev->dev, "can't remap io space 2\n");
e46a5e3f 303 goto err_reg;
7aeb95da 304 }
9cde5bf0 305
1da177e4
LT		 306 board->boardType = board_type;
307 switch (board_type) {
308 case MOXA_BOARD_C218_ISA:
309 case MOXA_BOARD_C218_PCI:
310 board->numPorts = 8;
311 break;
312
313 case MOXA_BOARD_CP204J:
314 board->numPorts = 4;
315 break;
316 default:
317 board->numPorts = 0;
318 break;
319 }
320 board->busType = MOXA_BUS_TYPE_PCI;
a784bf7c 321
9cde5bf0 322 pci_set_drvdata(pdev, board);
1da177e4
LT		 323
324 return (0);
e46a5e3f
JS		 325err_reg:
326 pci_release_region(pdev, 2);
9cde5bf0
JS		 327err:
328 return retval;
329}
330
331static void __devexit moxa_pci_remove(struct pci_dev *pdev)
332{
333 struct moxa_board_conf *brd = pci_get_drvdata(pdev);
334
e46a5e3f 335 iounmap(brd->basemem);
9cde5bf0 336 brd->basemem = NULL;
e46a5e3f 337 pci_release_region(pdev, 2);
1da177e4 338}
a784bf7c
JS		 339
340static struct pci_driver moxa_pci_driver = {
341 .name = "moxa",
342 .id_table = moxa_pcibrds,
343 .probe = moxa_pci_probe,
344 .remove = __devexit_p(moxa_pci_remove)
345};
1da177e4
LT		 346#endif /* CONFIG_PCI */
347
348static int __init moxa_init(void)
349{
8f8ecbad 350 struct moxa_port *ch;
d353eca4
JS		 351 unsigned int i, isabrds = 0;
352 int retval = 0;
1da177e4 353
7aeb95da
JS		 354 printk(KERN_INFO "MOXA Intellio family driver version %s\n",
355 MOXA_VERSION);
1da177e4
LT		 356 moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
357 if (!moxaDriver)
358 return -ENOMEM;
359
1da177e4 360 moxaDriver->owner = THIS_MODULE;
9b4e3b13 361 moxaDriver->name = "ttyMX";
1da177e4
LT		 362 moxaDriver->major = ttymajor;
363 moxaDriver->minor_start = 0;
364 moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
365 moxaDriver->subtype = SERIAL_TYPE_NORMAL;
366 moxaDriver->init_termios = tty_std_termios;
1da177e4 367 moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
606d099c
AC		 368 moxaDriver->init_termios.c_ispeed = 9600;
369 moxaDriver->init_termios.c_ospeed = 9600;
1da177e4
LT		 370 moxaDriver->flags = TTY_DRIVER_REAL_RAW;
371 tty_set_operations(moxaDriver, &moxa_ops);
372
8f8ecbad 373 for (i = 0, ch = moxa_ports; i < MAX_PORTS; i++, ch++) {
1da177e4
LT		 374 ch->type = PORT_16550A;
375 ch->port = i;
1da177e4
LT		 376 ch->close_delay = 5 * HZ / 10;
377 ch->closing_wait = 30 * HZ;
1da177e4
LT		 378 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
379 init_waitqueue_head(&ch->open_wait);
95e07914 380 init_completion(&ch->close_wait);
8f8ecbad 381
6f56b658 382 setup_timer(&ch->emptyTimer, moxa_check_xmit_empty,
8f8ecbad 383 (unsigned long)ch);
1da177e4
LT		 384 }
385
7aeb95da 386 pr_debug("Moxa tty devices major number = %d\n", ttymajor);
1da177e4
LT		 387
388 if (tty_register_driver(moxaDriver)) {
389 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
390 put_tty_driver(moxaDriver);
391 return -1;
392 }
1da177e4 393
aa7e5221 394 mod_timer(&moxaTimer, jiffies + HZ / 50);
1da177e4 395
d353eca4 396 /* Find the boards defined from module args. */
1da177e4 397#ifdef MODULE
d353eca4
JS		 398 {
399 struct moxa_board_conf *brd = moxa_boards;
1da177e4 400 for (i = 0; i < MAX_BOARDS; i++) {
d353eca4
JS		 401 if (!baseaddr[i])
402 break;
403 if (type[i] == MOXA_BOARD_C218_ISA ||
404 type[i] == MOXA_BOARD_C320_ISA) {
7aeb95da 405 pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n",
d353eca4
JS		 406 isabrds + 1, moxa_brdname[type[i] - 1],
407 baseaddr[i]);
408 brd->boardType = type[i];
409 brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 :
410 numports[i];
411 brd->busType = MOXA_BUS_TYPE_ISA;
412 brd->basemem = ioremap(baseaddr[i], 0x4000);
413 if (!brd->basemem) {
414 printk(KERN_ERR "moxa: can't remap %lx\n",
415 baseaddr[i]);
1da177e4
LT		 416 continue;
417 }
d353eca4
JS		 418
419 brd++;
420 isabrds++;
1da177e4
LT		 421 }
422 }
d353eca4 423 }
1da177e4 424#endif
a784bf7c 425
1da177e4 426#ifdef CONFIG_PCI
a784bf7c
JS		 427 retval = pci_register_driver(&moxa_pci_driver);
428 if (retval) {
429 printk(KERN_ERR "Can't register moxa pci driver!\n");
d353eca4 430 if (isabrds)
a784bf7c 431 retval = 0;
1da177e4
LT		 432 }
433#endif
a784bf7c 434
a784bf7c 435 return retval;
1da177e4
LT		 436}
437
438static void __exit moxa_exit(void)
439{
440 int i;
441
c251ae0d 442 del_timer_sync(&moxaTimer);
1da177e4
LT		 443
444 for (i = 0; i < MAX_PORTS; i++)
8f8ecbad 445 del_timer_sync(&moxa_ports[i].emptyTimer);
1da177e4
LT		 446
447 if (tty_unregister_driver(moxaDriver))
7aeb95da
JS		 448 printk(KERN_ERR "Couldn't unregister MOXA Intellio family "
449 "serial driver\n");
1da177e4 450 put_tty_driver(moxaDriver);
86fbf148 451
9cde5bf0 452#ifdef CONFIG_PCI
a784bf7c 453 pci_unregister_driver(&moxa_pci_driver);
9cde5bf0 454#endif
a784bf7c
JS		 455
456 for (i = 0; i < MAX_BOARDS; i++)
8f8ecbad
JS		 457 if (moxa_boards[i].basemem)
458 iounmap(moxa_boards[i].basemem);
1da177e4
LT		 459}
460
461module_init(moxa_init);
462module_exit(moxa_exit);
463
1da177e4
LT		 464static int moxa_open(struct tty_struct *tty, struct file *filp)
465{
8f8ecbad 466 struct moxa_port *ch;
1da177e4
LT		 467 int port;
468 int retval;
1da177e4 469
11324edd 470 port = tty->index;
1da177e4
LT		 471 if (port == MAX_PORTS) {
472 return (0);
473 }
474 if (!MoxaPortIsValid(port)) {
475 tty->driver_data = NULL;
476 return (-ENODEV);
477 }
1da177e4 478
8f8ecbad 479 ch = &moxa_ports[port];
1da177e4
LT		 480 ch->count++;
481 tty->driver_data = ch;
482 ch->tty = tty;
483 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
484 ch->statusflags = 0;
db1acaa6 485 moxa_set_tty_param(tty, tty->termios);
1da177e4
LT		 486 MoxaPortLineCtrl(ch->port, 1, 1);
487 MoxaPortEnable(ch->port);
488 ch->asyncflags |= ASYNC_INITIALIZED;
489 }
6f56b658 490 retval = moxa_block_till_ready(tty, filp, ch);
1da177e4
LT		 491
492 moxa_unthrottle(tty);
493
494 if (ch->type == PORT_16550A) {
495 MoxaSetFifo(ch->port, 1);
496 } else {
497 MoxaSetFifo(ch->port, 0);
498 }
499
500 return (retval);
501}
502
503static void moxa_close(struct tty_struct *tty, struct file *filp)
504{
8f8ecbad 505 struct moxa_port *ch;
1da177e4
LT		 506 int port;
507
11324edd 508 port = tty->index;
1da177e4
LT		 509 if (port == MAX_PORTS) {
510 return;
511 }
512 if (!MoxaPortIsValid(port)) {
7aeb95da 513 pr_debug("Invalid portno in moxa_close\n");
1da177e4
LT		 514 tty->driver_data = NULL;
515 return;
516 }
517 if (tty->driver_data == NULL) {
518 return;
519 }
520 if (tty_hung_up_p(filp)) {
521 return;
522 }
8f8ecbad 523 ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 524
525 if ((tty->count == 1) && (ch->count != 1)) {
7aeb95da
JS		 526 printk(KERN_WARNING "moxa_close: bad serial port count; "
527 "tty->count is 1, ch->count is %d\n", ch->count);
1da177e4
LT		 528 ch->count = 1;
529 }
530 if (--ch->count < 0) {
7aeb95da
JS		 531 printk(KERN_WARNING "moxa_close: bad serial port count, "
532 "device=%s\n", tty->name);
1da177e4
LT		 533 ch->count = 0;
534 }
535 if (ch->count) {
536 return;
537 }
538 ch->asyncflags |= ASYNC_CLOSING;
539
540 ch->cflag = tty->termios->c_cflag;
541 if (ch->asyncflags & ASYNC_INITIALIZED) {
6f56b658 542 moxa_setup_empty_event(tty);
1da177e4 543 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
8f8ecbad 544 del_timer_sync(&moxa_ports[ch->port].emptyTimer);
1da177e4 545 }
6f56b658 546 moxa_shut_down(ch);
1da177e4
LT		 547 MoxaPortFlushData(port, 2);
548
549 if (tty->driver->flush_buffer)
550 tty->driver->flush_buffer(tty);
551 tty_ldisc_flush(tty);
552
553 tty->closing = 0;
554 ch->event = 0;
555 ch->tty = NULL;
556 if (ch->blocked_open) {
557 if (ch->close_delay) {
558 msleep_interruptible(jiffies_to_msecs(ch->close_delay));
559 }
560 wake_up_interruptible(&ch->open_wait);
561 }
562 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
95e07914 563 complete_all(&ch->close_wait);
1da177e4
LT		 564}
565
566static int moxa_write(struct tty_struct *tty,
567 const unsigned char *buf, int count)
568{
8f8ecbad 569 struct moxa_port *ch;
1da177e4
LT		 570 int len, port;
571 unsigned long flags;
572
8f8ecbad 573 ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 574 if (ch == NULL)
575 return (0);
576 port = ch->port;
33f0f88f
AC		 577
578 spin_lock_irqsave(&moxa_lock, flags);
1da177e4 579 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
33f0f88f 580 spin_unlock_irqrestore(&moxa_lock, flags);
1da177e4
LT		 581
582 /*********************************************
583 if ( !(ch->statusflags & LOWWAIT) &&
584 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
585 ************************************************/
586 ch->statusflags |= LOWWAIT;
587 return (len);
588}
589
590static int moxa_write_room(struct tty_struct *tty)
591{
8f8ecbad 592 struct moxa_port *ch;
1da177e4
LT		 593
594 if (tty->stopped)
595 return (0);
8f8ecbad 596 ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 597 if (ch == NULL)
598 return (0);
599 return (MoxaPortTxFree(ch->port));
600}
601
602static void moxa_flush_buffer(struct tty_struct *tty)
603{
8f8ecbad 604 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 605
606 if (ch == NULL)
607 return;
608 MoxaPortFlushData(ch->port, 1);
609 tty_wakeup(tty);
610}
611
612static int moxa_chars_in_buffer(struct tty_struct *tty)
613{
614 int chars;
8f8ecbad 615 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 616
617 /*
618 * Sigh...I have to check if driver_data is NULL here, because
619 * if an open() fails, the TTY subsystem eventually calls
620 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
621 * routine. And since the open() failed, we return 0 here. TDJ
622 */
623 if (ch == NULL)
624 return (0);
625 chars = MoxaPortTxQueue(ch->port);
626 if (chars) {
627 /*
628 * Make it possible to wakeup anything waiting for output
629 * in tty_ioctl.c, etc.
630 */
631 if (!(ch->statusflags & EMPTYWAIT))
6f56b658 632 moxa_setup_empty_event(tty);
1da177e4
LT		 633 }
634 return (chars);
635}
636
637static void moxa_flush_chars(struct tty_struct *tty)
638{
639 /*
640 * Don't think I need this, because this is called to empty the TX
641 * buffer for the 16450, 16550, etc.
642 */
643}
644
645static void moxa_put_char(struct tty_struct *tty, unsigned char c)
646{
8f8ecbad 647 struct moxa_port *ch;
1da177e4
LT		 648 int port;
649 unsigned long flags;
650
8f8ecbad 651 ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 652 if (ch == NULL)
653 return;
654 port = ch->port;
33f0f88f 655 spin_lock_irqsave(&moxa_lock, flags);
f204d267 656 MoxaPortWriteData(port, &c, 1);
33f0f88f 657 spin_unlock_irqrestore(&moxa_lock, flags);
1da177e4
LT		 658 /************************************************
659 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
660 *************************************************/
661 ch->statusflags |= LOWWAIT;
662}
663
664static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
665{
8f8ecbad 666 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 667 int port;
668 int flag = 0, dtr, rts;
669
11324edd 670 port = tty->index;
1da177e4
LT		 671 if ((port != MAX_PORTS) && (!ch))
672 return (-EINVAL);
673
674 MoxaPortGetLineOut(ch->port, &dtr, &rts);
675 if (dtr)
676 flag |= TIOCM_DTR;
677 if (rts)
678 flag |= TIOCM_RTS;
679 dtr = MoxaPortLineStatus(ch->port);
680 if (dtr & 1)
681 flag |= TIOCM_CTS;
682 if (dtr & 2)
683 flag |= TIOCM_DSR;
684 if (dtr & 4)
685 flag |= TIOCM_CD;
686 return flag;
687}
688
689static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
690 unsigned int set, unsigned int clear)
691{
8f8ecbad 692 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 693 int port;
694 int dtr, rts;
695
11324edd 696 port = tty->index;
1da177e4
LT		 697 if ((port != MAX_PORTS) && (!ch))
698 return (-EINVAL);
699
700 MoxaPortGetLineOut(ch->port, &dtr, &rts);
701 if (set & TIOCM_RTS)
702 rts = 1;
703 if (set & TIOCM_DTR)
704 dtr = 1;
705 if (clear & TIOCM_RTS)
706 rts = 0;
707 if (clear & TIOCM_DTR)
708 dtr = 0;
709 MoxaPortLineCtrl(ch->port, dtr, rts);
710 return 0;
711}
712
713static int moxa_ioctl(struct tty_struct *tty, struct file *file,
714 unsigned int cmd, unsigned long arg)
715{
8f8ecbad 716 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 717 register int port;
718 void __user *argp = (void __user *)arg;
719 int retval;
720
11324edd 721 port = tty->index;
1da177e4
LT		 722 if ((port != MAX_PORTS) && (!ch))
723 return (-EINVAL);
724
725 switch (cmd) {
726 case TCSBRK: /* SVID version: non-zero arg --> no break */
727 retval = tty_check_change(tty);
728 if (retval)
729 return (retval);
6f56b658 730 moxa_setup_empty_event(tty);
1da177e4
LT		 731 tty_wait_until_sent(tty, 0);
732 if (!arg)
733 MoxaPortSendBreak(ch->port, 0);
734 return (0);
735 case TCSBRKP: /* support for POSIX tcsendbreak() */
736 retval = tty_check_change(tty);
737 if (retval)
738 return (retval);
6f56b658 739 moxa_setup_empty_event(tty);
1da177e4
LT		 740 tty_wait_until_sent(tty, 0);
741 MoxaPortSendBreak(ch->port, arg);
742 return (0);
743 case TIOCGSOFTCAR:
9e9fc313 744 return put_user(C_CLOCAL(tty) ? 1 : 0, (int __user *)argp);
1da177e4 745 case TIOCSSOFTCAR:
9e9fc313 746 if (get_user(retval, (int __user *)argp))
1da177e4
LT		 747 return -EFAULT;
748 arg = retval;
749 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
750 (arg ? CLOCAL : 0));
751 if (C_CLOCAL(tty))
752 ch->asyncflags &= ~ASYNC_CHECK_CD;
753 else
754 ch->asyncflags |= ASYNC_CHECK_CD;
755 return (0);
756 case TIOCGSERIAL:
757 return moxa_get_serial_info(ch, argp);
758
759 case TIOCSSERIAL:
760 return moxa_set_serial_info(ch, argp);
761 default:
762 retval = MoxaDriverIoctl(cmd, arg, port);
763 }
764 return (retval);
765}
766
767static void moxa_throttle(struct tty_struct *tty)
768{
8f8ecbad 769 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 770
771 ch->statusflags |= THROTTLE;
772}
773
774static void moxa_unthrottle(struct tty_struct *tty)
775{
8f8ecbad 776 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 777
778 ch->statusflags &= ~THROTTLE;
779}
780
781static void moxa_set_termios(struct tty_struct *tty,
606d099c 782 struct ktermios *old_termios)
1da177e4 783{
8f8ecbad 784 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 785
786 if (ch == NULL)
787 return;
db1acaa6 788 moxa_set_tty_param(tty, old_termios);
1da177e4
LT		 789 if (!(old_termios->c_cflag & CLOCAL) &&
790 (tty->termios->c_cflag & CLOCAL))
791 wake_up_interruptible(&ch->open_wait);
792}
793
794static void moxa_stop(struct tty_struct *tty)
795{
8f8ecbad 796 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 797
798 if (ch == NULL)
799 return;
800 MoxaPortTxDisable(ch->port);
801 ch->statusflags |= TXSTOPPED;
802}
803
804
805static void moxa_start(struct tty_struct *tty)
806{
8f8ecbad 807 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 808
809 if (ch == NULL)
810 return;
811
812 if (!(ch->statusflags & TXSTOPPED))
813 return;
814
815 MoxaPortTxEnable(ch->port);
816 ch->statusflags &= ~TXSTOPPED;
817}
818
819static void moxa_hangup(struct tty_struct *tty)
820{
8f8ecbad 821 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 822
823 moxa_flush_buffer(tty);
6f56b658 824 moxa_shut_down(ch);
1da177e4
LT		 825 ch->event = 0;
826 ch->count = 0;
827 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
828 ch->tty = NULL;
829 wake_up_interruptible(&ch->open_wait);
830}
831
832static void moxa_poll(unsigned long ignored)
833{
834 register int card;
8f8ecbad 835 struct moxa_port *ch;
1da177e4
LT		 836 struct tty_struct *tp;
837 int i, ports;
838
1da177e4
LT		 839 del_timer(&moxaTimer);
840
841 if (MoxaDriverPoll() < 0) {
aa7e5221 842 mod_timer(&moxaTimer, jiffies + HZ / 50);
1da177e4
LT		 843 return;
844 }
845 for (card = 0; card < MAX_BOARDS; card++) {
846 if ((ports = MoxaPortsOfCard(card)) <= 0)
847 continue;
8f8ecbad 848 ch = &moxa_ports[card * MAX_PORTS_PER_BOARD];
1da177e4
LT		 849 for (i = 0; i < ports; i++, ch++) {
850 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
851 continue;
852 if (!(ch->statusflags & THROTTLE) &&
853 (MoxaPortRxQueue(ch->port) > 0))
6f56b658 854 moxa_receive_data(ch);
1da177e4
LT		 855 if ((tp = ch->tty) == 0)
856 continue;
857 if (ch->statusflags & LOWWAIT) {
858 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
859 if (!tp->stopped) {
860 ch->statusflags &= ~LOWWAIT;
861 tty_wakeup(tp);
862 }
863 }
864 }
865 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
866 tty_insert_flip_char(tp, 0, TTY_BREAK);
867 tty_schedule_flip(tp);
868 }
869 if (MoxaPortDCDChange(ch->port)) {
870 if (ch->asyncflags & ASYNC_CHECK_CD) {
871 if (MoxaPortDCDON(ch->port))
872 wake_up_interruptible(&ch->open_wait);
873 else {
ba196df3
JS		 874 tty_hangup(tp);
875 wake_up_interruptible(&ch->open_wait);
876 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
1da177e4
LT		 877 }
878 }
879 }
880 }
881 }
882
aa7e5221 883 mod_timer(&moxaTimer, jiffies + HZ / 50);
1da177e4
LT		 884}
885
886/******************************************************************************/
887
db1acaa6 888static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios)
1da177e4 889{
606d099c 890 register struct ktermios *ts;
8f8ecbad 891 struct moxa_port *ch;
db1acaa6 892 int rts, cts, txflow, rxflow, xany, baud;
1da177e4 893
8f8ecbad 894 ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 895 ts = tty->termios;
896 if (ts->c_cflag & CLOCAL)
897 ch->asyncflags &= ~ASYNC_CHECK_CD;
898 else
899 ch->asyncflags |= ASYNC_CHECK_CD;
900 rts = cts = txflow = rxflow = xany = 0;
901 if (ts->c_cflag & CRTSCTS)
902 rts = cts = 1;
903 if (ts->c_iflag & IXON)
904 txflow = 1;
905 if (ts->c_iflag & IXOFF)
906 rxflow = 1;
907 if (ts->c_iflag & IXANY)
908 xany = 1;
db1acaa6
AC		 909
910 /* Clear the features we don't support */
911 ts->c_cflag &= ~CMSPAR;
1da177e4 912 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
db1acaa6
AC		 913 baud = MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty));
914 if (baud == -1)
915 baud = tty_termios_baud_rate(old_termios);
916 /* Not put the baud rate into the termios data */
917 tty_encode_baud_rate(tty, baud, baud);
1da177e4
LT		 918}
919
6f56b658 920static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp,
8f8ecbad 921 struct moxa_port *ch)
1da177e4
LT		 922{
923 DECLARE_WAITQUEUE(wait,current);
924 unsigned long flags;
925 int retval;
926 int do_clocal = C_CLOCAL(tty);
927
928 /*
929 * If the device is in the middle of being closed, then block
930 * until it's done, and then try again.
931 */
932 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
933 if (ch->asyncflags & ASYNC_CLOSING)
95e07914 934 wait_for_completion_interruptible(&ch->close_wait);
1da177e4
LT		 935#ifdef SERIAL_DO_RESTART
936 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
937 return (-EAGAIN);
938 else
939 return (-ERESTARTSYS);
940#else
941 return (-EAGAIN);
942#endif
943 }
944 /*
945 * If non-blocking mode is set, then make the check up front
946 * and then exit.
947 */
948 if (filp->f_flags & O_NONBLOCK) {
949 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
950 return (0);
951 }
952 /*
953 * Block waiting for the carrier detect and the line to become free
954 */
955 retval = 0;
956 add_wait_queue(&ch->open_wait, &wait);
7aeb95da
JS		 957 pr_debug("block_til_ready before block: ttys%d, count = %d\n",
958 ch->port, ch->count);
33f0f88f 959 spin_lock_irqsave(&moxa_lock, flags);
1da177e4
LT		 960 if (!tty_hung_up_p(filp))
961 ch->count--;
1da177e4 962 ch->blocked_open++;
33f0f88f
AC		 963 spin_unlock_irqrestore(&moxa_lock, flags);
964
1da177e4
LT		 965 while (1) {
966 set_current_state(TASK_INTERRUPTIBLE);
967 if (tty_hung_up_p(filp) ||
968 !(ch->asyncflags & ASYNC_INITIALIZED)) {
969#ifdef SERIAL_DO_RESTART
970 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
971 retval = -EAGAIN;
972 else
973 retval = -ERESTARTSYS;
974#else
975 retval = -EAGAIN;
976#endif
977 break;
978 }
979 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
980 MoxaPortDCDON(ch->port)))
981 break;
982
983 if (signal_pending(current)) {
984 retval = -ERESTARTSYS;
985 break;
986 }
987 schedule();
988 }
989 set_current_state(TASK_RUNNING);
990 remove_wait_queue(&ch->open_wait, &wait);
33f0f88f
AC		 991
992 spin_lock_irqsave(&moxa_lock, flags);
1da177e4
LT		 993 if (!tty_hung_up_p(filp))
994 ch->count++;
995 ch->blocked_open--;
33f0f88f 996 spin_unlock_irqrestore(&moxa_lock, flags);
7aeb95da
JS		 997 pr_debug("block_til_ready after blocking: ttys%d, count = %d\n",
998 ch->port, ch->count);
1da177e4
LT		 999 if (retval)
1000 return (retval);
33f0f88f 1001 /* FIXME: review to see if we need to use set_bit on these */
1da177e4 1002 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
33f0f88f 1003 return 0;
1da177e4
LT		 1004}
1005
6f56b658 1006static void moxa_setup_empty_event(struct tty_struct *tty)
1da177e4 1007{
8f8ecbad 1008 struct moxa_port *ch = tty->driver_data;
1da177e4
LT		 1009 unsigned long flags;
1010
33f0f88f 1011 spin_lock_irqsave(&moxa_lock, flags);
1da177e4 1012 ch->statusflags |= EMPTYWAIT;
8f8ecbad 1013 mod_timer(&moxa_ports[ch->port].emptyTimer, jiffies + HZ);
33f0f88f 1014 spin_unlock_irqrestore(&moxa_lock, flags);
1da177e4
LT		 1015}
1016
6f56b658 1017static void moxa_check_xmit_empty(unsigned long data)
1da177e4 1018{
8f8ecbad 1019 struct moxa_port *ch;
1da177e4 1020
8f8ecbad 1021 ch = (struct moxa_port *) data;
1da177e4
LT		 1022 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1023 if (MoxaPortTxQueue(ch->port) == 0) {
1024 ch->statusflags &= ~EMPTYWAIT;
1025 tty_wakeup(ch->tty);
1026 return;
1027 }
c4342205
JS		 1028 mod_timer(&moxa_ports[ch->port].emptyTimer,
1029 round_jiffies(jiffies + HZ));
1da177e4
LT		 1030 } else
1031 ch->statusflags &= ~EMPTYWAIT;
1032}
1033
6f56b658 1034static void moxa_shut_down(struct moxa_port *ch)
1da177e4
LT		 1035{
1036 struct tty_struct *tp;
1037
1038 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1039 return;
1040
1041 tp = ch->tty;
1042
1043 MoxaPortDisable(ch->port);
1044
1045 /*
1046 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1047 */
1048 if (tp->termios->c_cflag & HUPCL)
1049 MoxaPortLineCtrl(ch->port, 0, 0);
1050
1051 ch->asyncflags &= ~ASYNC_INITIALIZED;
1052}
1053
6f56b658 1054static void moxa_receive_data(struct moxa_port *ch)
1da177e4
LT		 1055{
1056 struct tty_struct *tp;
606d099c 1057 struct ktermios *ts;
1da177e4
LT		 1058 unsigned long flags;
1059
1060 ts = NULL;
1061 tp = ch->tty;
1062 if (tp)
1063 ts = tp->termios;
1064 /**************************************************
1065 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1066 *****************************************************/
1067 if (!tp || !ts) {
1068 MoxaPortFlushData(ch->port, 0);
1069 return;
1070 }
33f0f88f
AC		 1071 spin_lock_irqsave(&moxa_lock, flags);
1072 MoxaPortReadData(ch->port, tp);
1073 spin_unlock_irqrestore(&moxa_lock, flags);
1074 tty_schedule_flip(tp);
1da177e4
LT		 1075}
1076
1077#define Magic_code 0x404
1078
1079/*
1080 * System Configuration
1081 */
1082/*
1083 * for C218 BIOS initialization
1084 */
1085#define C218_ConfBase 0x800
1086#define C218_status (C218_ConfBase + 0) /* BIOS running status */
1087#define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1088#define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1089#define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1090#define C218check_sum (C218_ConfBase + 8) /* BYTE */
1091#define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1092#define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1093#define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1094#define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1095#define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1096
1097#define C218_LoadBuf 0x0F00
1098#define C218_KeyCode 0x218
1099#define CP204J_KeyCode 0x204
1100
1101/*
1102 * for C320 BIOS initialization
1103 */
1104#define C320_ConfBase 0x800
1105#define C320_LoadBuf 0x0f00
1106#define STS_init 0x05 /* for C320_status */
1107
1108#define C320_status C320_ConfBase + 0 /* BIOS running status */
1109#define C320_diag C320_ConfBase + 2 /* diagnostic status */
1110#define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1111#define C320DLoad_len C320_ConfBase + 6 /* WORD */
1112#define C320check_sum C320_ConfBase + 8 /* WORD */
1113#define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1114#define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1115#define C320UART_no C320_ConfBase + 0x0e /* WORD */
1116
1117#define C320_KeyCode 0x320
1118
1119#define FixPage_addr 0x0000 /* starting addr of static page */
1120#define DynPage_addr 0x2000 /* starting addr of dynamic page */
1121#define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1122#define Control_reg 0x1ff0 /* select page and reset control */
1123#define HW_reset 0x80
1124
1125/*
1126 * Function Codes
1127 */
1128#define FC_CardReset 0x80
1129#define FC_ChannelReset 1 /* C320 firmware not supported */
1130#define FC_EnableCH 2
1131#define FC_DisableCH 3
1132#define FC_SetParam 4
1133#define FC_SetMode 5
1134#define FC_SetRate 6
1135#define FC_LineControl 7
1136#define FC_LineStatus 8
1137#define FC_XmitControl 9
1138#define FC_FlushQueue 10
1139#define FC_SendBreak 11
1140#define FC_StopBreak 12
1141#define FC_LoopbackON 13
1142#define FC_LoopbackOFF 14
1143#define FC_ClrIrqTable 15
1144#define FC_SendXon 16
1145#define FC_SetTermIrq 17 /* C320 firmware not supported */
1146#define FC_SetCntIrq 18 /* C320 firmware not supported */
1147#define FC_SetBreakIrq 19
1148#define FC_SetLineIrq 20
1149#define FC_SetFlowCtl 21
1150#define FC_GenIrq 22
1151#define FC_InCD180 23
1152#define FC_OutCD180 24
1153#define FC_InUARTreg 23
1154#define FC_OutUARTreg 24
1155#define FC_SetXonXoff 25
1156#define FC_OutCD180CCR 26
1157#define FC_ExtIQueue 27
1158#define FC_ExtOQueue 28
1159#define FC_ClrLineIrq 29
1160#define FC_HWFlowCtl 30
1161#define FC_GetClockRate 35
1162#define FC_SetBaud 36
1163#define FC_SetDataMode 41
1164#define FC_GetCCSR 43
1165#define FC_GetDataError 45
1166#define FC_RxControl 50
1167#define FC_ImmSend 51
1168#define FC_SetXonState 52
1169#define FC_SetXoffState 53
1170#define FC_SetRxFIFOTrig 54
1171#define FC_SetTxFIFOCnt 55
1172#define FC_UnixRate 56
1173#define FC_UnixResetTimer 57
1174
1175#define RxFIFOTrig1 0
1176#define RxFIFOTrig4 1
1177#define RxFIFOTrig8 2
1178#define RxFIFOTrig14 3
1179
1180/*
1181 * Dual-Ported RAM
1182 */
1183#define DRAM_global 0
1184#define INT_data (DRAM_global + 0)
1185#define Config_base (DRAM_global + 0x108)
1186
1187#define IRQindex (INT_data + 0)
1188#define IRQpending (INT_data + 4)
1189#define IRQtable (INT_data + 8)
1190
1191/*
1192 * Interrupt Status
1193 */
1194#define IntrRx 0x01 /* receiver data O.K. */
1195#define IntrTx 0x02 /* transmit buffer empty */
1196#define IntrFunc 0x04 /* function complete */
1197#define IntrBreak 0x08 /* received break */
1198#define IntrLine 0x10 /* line status change
1199 for transmitter */
1200#define IntrIntr 0x20 /* received INTR code */
1201#define IntrQuit 0x40 /* received QUIT code */
1202#define IntrEOF 0x80 /* received EOF code */
1203
1204#define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1205#define IntrTxTrigger 0x200 /* tx data count below trigger value */
1206
1207#define Magic_no (Config_base + 0)
1208#define Card_model_no (Config_base + 2)
1209#define Total_ports (Config_base + 4)
1210#define Module_cnt (Config_base + 8)
1211#define Module_no (Config_base + 10)
1212#define Timer_10ms (Config_base + 14)
1213#define Disable_IRQ (Config_base + 20)
1214#define TMS320_PORT1 (Config_base + 22)
1215#define TMS320_PORT2 (Config_base + 24)
1216#define TMS320_CLOCK (Config_base + 26)
1217
1218/*
1219 * DATA BUFFER in DRAM
1220 */
1221#define Extern_table 0x400 /* Base address of the external table
1222 (24 words * 64) total 3K bytes
1223 (24 words * 128) total 6K bytes */
1224#define Extern_size 0x60 /* 96 bytes */
1225#define RXrptr 0x00 /* read pointer for RX buffer */
1226#define RXwptr 0x02 /* write pointer for RX buffer */
1227#define TXrptr 0x04 /* read pointer for TX buffer */
1228#define TXwptr 0x06 /* write pointer for TX buffer */
1229#define HostStat 0x08 /* IRQ flag and general flag */
1230#define FlagStat 0x0A
1231#define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1232 /* x x x x | | | | */
1233 /* | | | + CTS flow */
1234 /* | | +--- RTS flow */
1235 /* | +------ TX Xon/Xoff */
1236 /* +--------- RX Xon/Xoff */
1237#define Break_cnt 0x0E /* received break count */
1238#define CD180TXirq 0x10 /* if non-0: enable TX irq */
1239#define RX_mask 0x12
1240#define TX_mask 0x14
1241#define Ofs_rxb 0x16
1242#define Ofs_txb 0x18
1243#define Page_rxb 0x1A
1244#define Page_txb 0x1C
1245#define EndPage_rxb 0x1E
1246#define EndPage_txb 0x20
1247#define Data_error 0x22
1248#define RxTrigger 0x28
1249#define TxTrigger 0x2a
1250
1251#define rRXwptr 0x34
1252#define Low_water 0x36
1253
1254#define FuncCode 0x40
1255#define FuncArg 0x42
1256#define FuncArg1 0x44
1257
1258#define C218rx_size 0x2000 /* 8K bytes */
1259#define C218tx_size 0x8000 /* 32K bytes */
1260
1261#define C218rx_mask (C218rx_size - 1)
1262#define C218tx_mask (C218tx_size - 1)
1263
1264#define C320p8rx_size 0x2000
1265#define C320p8tx_size 0x8000
1266#define C320p8rx_mask (C320p8rx_size - 1)
1267#define C320p8tx_mask (C320p8tx_size - 1)
1268
1269#define C320p16rx_size 0x2000
1270#define C320p16tx_size 0x4000
1271#define C320p16rx_mask (C320p16rx_size - 1)
1272#define C320p16tx_mask (C320p16tx_size - 1)
1273
1274#define C320p24rx_size 0x2000
1275#define C320p24tx_size 0x2000
1276#define C320p24rx_mask (C320p24rx_size - 1)
1277#define C320p24tx_mask (C320p24tx_size - 1)
1278
1279#define C320p32rx_size 0x1000
1280#define C320p32tx_size 0x1000
1281#define C320p32rx_mask (C320p32rx_size - 1)
1282#define C320p32tx_mask (C320p32tx_size - 1)
1283
1284#define Page_size 0x2000
1285#define Page_mask (Page_size - 1)
1286#define C218rx_spage 3
1287#define C218tx_spage 4
1288#define C218rx_pageno 1
1289#define C218tx_pageno 4
1290#define C218buf_pageno 5
1291
1292#define C320p8rx_spage 3
1293#define C320p8tx_spage 4
1294#define C320p8rx_pgno 1
1295#define C320p8tx_pgno 4
1296#define C320p8buf_pgno 5
1297
1298#define C320p16rx_spage 3
1299#define C320p16tx_spage 4
1300#define C320p16rx_pgno 1
1301#define C320p16tx_pgno 2
1302#define C320p16buf_pgno 3
1303
1304#define C320p24rx_spage 3
1305#define C320p24tx_spage 4
1306#define C320p24rx_pgno 1
1307#define C320p24tx_pgno 1
1308#define C320p24buf_pgno 2
1309
1310#define C320p32rx_spage 3
1311#define C320p32tx_ofs C320p32rx_size
1312#define C320p32tx_spage 3
1313#define C320p32buf_pgno 1
1314
1315/*
1316 * Host Status
1317 */
1318#define WakeupRx 0x01
1319#define WakeupTx 0x02
1320#define WakeupBreak 0x08
1321#define WakeupLine 0x10
1322#define WakeupIntr 0x20
1323#define WakeupQuit 0x40
1324#define WakeupEOF 0x80 /* used in VTIME control */
1325#define WakeupRxTrigger 0x100
1326#define WakeupTxTrigger 0x200
1327/*
1328 * Flag status
1329 */
1330#define Rx_over 0x01
1331#define Xoff_state 0x02
1332#define Tx_flowOff 0x04
1333#define Tx_enable 0x08
1334#define CTS_state 0x10
1335#define DSR_state 0x20
1336#define DCD_state 0x80
1337/*
1338 * FlowControl
1339 */
1340#define CTS_FlowCtl 1
1341#define RTS_FlowCtl 2
1342#define Tx_FlowCtl 4
1343#define Rx_FlowCtl 8
1344#define IXM_IXANY 0x10
1345
1346#define LowWater 128
1347
1348#define DTR_ON 1
1349#define RTS_ON 2
1350#define CTS_ON 1
1351#define DSR_ON 2
1352#define DCD_ON 8
1353
1354/* mode definition */
1355#define MX_CS8 0x03
1356#define MX_CS7 0x02
1357#define MX_CS6 0x01
1358#define MX_CS5 0x00
1359
1360#define MX_STOP1 0x00
1361#define MX_STOP15 0x04
1362#define MX_STOP2 0x08
1363
1364#define MX_PARNONE 0x00
1365#define MX_PAREVEN 0x40
1366#define MX_PARODD 0xC0
1367
1368/*
1369 * Query
1370 */
1da177e4
LT		 1371
1372struct mon_str {
1373 int tick;
1374 int rxcnt[MAX_PORTS];
1375 int txcnt[MAX_PORTS];
1376};
1da177e4
LT		 1377
1378#define DCD_changed 0x01
1379#define DCD_oldstate 0x80
1380
1381static unsigned char moxaBuff[10240];
1da177e4
LT		 1382static int moxaLowWaterChk;
1383static int moxaCard;
9dff89cd 1384static struct mon_str moxaLog;
9fa372a8 1385static int moxaFuncTout = HZ / 2;
1da177e4 1386
1da177e4 1387static void moxafunc(void __iomem *, int, ushort);
6f56b658
JS		 1388static void moxa_wait_finish(void __iomem *);
1389static void moxa_low_water_check(void __iomem *);
1da177e4
LT		 1390static int moxaloadbios(int, unsigned char __user *, int);
1391static int moxafindcard(int);
1392static int moxaload320b(int, unsigned char __user *, int);
1393static int moxaloadcode(int, unsigned char __user *, int);
1394static int moxaloadc218(int, void __iomem *, int);
1395static int moxaloadc320(int, void __iomem *, int, int *);
1396
1397/*****************************************************************************
1398 * Driver level functions: *
1399 * 1. MoxaDriverInit(void); *
1400 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1401 * 3. MoxaDriverPoll(void); *
1402 *****************************************************************************/
1403void MoxaDriverInit(void)
1404{
8f8ecbad
JS		 1405 struct moxa_port *p;
1406 unsigned int i;
1da177e4
LT		 1407
1408 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1409 moxaCard = 0;
1410 moxaLog.tick = 0;
1411 moxaLowWaterChk = 0;
1412 for (i = 0; i < MAX_PORTS; i++) {
8f8ecbad
JS		 1413 p = &moxa_ports[i];
1414 p->chkPort = 0;
1415 p->lowChkFlag = 0;
1416 p->lineCtrl = 0;
1da177e4
LT		 1417 moxaLog.rxcnt[i] = 0;
1418 moxaLog.txcnt[i] = 0;
1419 }
1420}
1421
1422#define MOXA 0x400
1423#define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1424#define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1425#define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1426#define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1427#define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1428#define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1429#define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1430#define MOXA_GETDATACOUNT (MOXA + 23)
1431#define MOXA_GET_IOQUEUE (MOXA + 27)
1432#define MOXA_FLUSH_QUEUE (MOXA + 28)
1433#define MOXA_GET_CONF (MOXA + 35) /* configuration */
1434#define MOXA_GET_MAJOR (MOXA + 63)
1435#define MOXA_GET_CUMAJOR (MOXA + 64)
1436#define MOXA_GETMSTATUS (MOXA + 65)
1437
1da177e4
LT		 1438struct dl_str {
1439 char __user *buf;
1440 int len;
1441 int cardno;
1442};
1443
1da177e4
LT		 1444static struct dl_str dltmp;
1445
1446void MoxaPortFlushData(int port, int mode)
1447{
1448 void __iomem *ofsAddr;
1449 if ((mode < 0) || (mode > 2))
1450 return;
8f8ecbad 1451 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 1452 moxafunc(ofsAddr, FC_FlushQueue, mode);
1453 if (mode != 1) {
8f8ecbad 1454 moxa_ports[port].lowChkFlag = 0;
6f56b658 1455 moxa_low_water_check(ofsAddr);
1da177e4
LT		 1456 }
1457}
1458
1459int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1460{
1461 int i;
1462 int status;
1463 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1464 void __user *argp = (void __user *)arg;
1465
11324edd 1466 if (port == MAX_PORTS) {
1da177e4
LT		 1467 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1468 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1469 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1470 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1471 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1472 return (-EINVAL);
1473 }
1474 switch (cmd) {
1475 case MOXA_GET_CONF:
9dff89cd
JS		 1476 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS *
1477 sizeof(struct moxa_board_conf)))
1da177e4
LT		 1478 return -EFAULT;
1479 return (0);
1480 case MOXA_INIT_DRIVER:
1481 if ((int) arg == 0x404)
1482 MoxaDriverInit();
1483 return (0);
1484 case MOXA_GETDATACOUNT:
1485 moxaLog.tick = jiffies;
9dff89cd 1486 if(copy_to_user(argp, &moxaLog, sizeof(struct mon_str)))
1da177e4
LT		 1487 return -EFAULT;
1488 return (0);
1489 case MOXA_FLUSH_QUEUE:
1490 MoxaPortFlushData(port, arg);
1491 return (0);
8f8ecbad
JS		 1492 case MOXA_GET_IOQUEUE: {
1493 struct moxaq_str __user *argm = argp;
181d6f4f 1494 struct moxaq_str tmp;
8f8ecbad
JS		 1495
1496 for (i = 0; i < MAX_PORTS; i++, argm++) {
181d6f4f
JS		 1497 memset(&tmp, 0, sizeof(tmp));
1498 if (moxa_ports[i].chkPort) {
1499 tmp.inq = MoxaPortRxQueue(i);
1500 tmp.outq = MoxaPortTxQueue(i);
1da177e4 1501 }
181d6f4f 1502 if (copy_to_user(argm, &tmp, sizeof(tmp)))
8f8ecbad 1503 return -EFAULT;
1da177e4 1504 }
1da177e4 1505 return (0);
8f8ecbad 1506 } case MOXA_GET_OQUEUE:
1da177e4
LT		 1507 i = MoxaPortTxQueue(port);
1508 return put_user(i, (unsigned long __user *)argp);
1509 case MOXA_GET_IQUEUE:
1510 i = MoxaPortRxQueue(port);
1511 return put_user(i, (unsigned long __user *)argp);
1512 case MOXA_GET_MAJOR:
1513 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1514 return -EFAULT;
1515 return 0;
1516 case MOXA_GET_CUMAJOR:
1517 i = 0;
1518 if(copy_to_user(argp, &i, sizeof(int)))
1519 return -EFAULT;
1520 return 0;
8f8ecbad
JS		 1521 case MOXA_GETMSTATUS: {
1522 struct mxser_mstatus __user *argm = argp;
181d6f4f 1523 struct mxser_mstatus tmp;
8f8ecbad
JS		 1524 struct moxa_port *p;
1525
1526 for (i = 0; i < MAX_PORTS; i++, argm++) {
1527 p = &moxa_ports[i];
181d6f4f 1528 memset(&tmp, 0, sizeof(tmp));
8f8ecbad
JS		 1529 if (!p->chkPort) {
1530 goto copy;
1da177e4 1531 } else {
8f8ecbad 1532 status = MoxaPortLineStatus(p->port);
1da177e4 1533 if (status & 1)
181d6f4f 1534 tmp.cts = 1;
1da177e4 1535 if (status & 2)
181d6f4f 1536 tmp.dsr = 1;
1da177e4 1537 if (status & 4)
181d6f4f 1538 tmp.dcd = 1;
1da177e4
LT		 1539 }
1540
8f8ecbad 1541 if (!p->tty || !p->tty->termios)
181d6f4f 1542 tmp.cflag = p->cflag;
1da177e4 1543 else
181d6f4f 1544 tmp.cflag = p->tty->termios->c_cflag;
8f8ecbad 1545copy:
181d6f4f 1546 if (copy_to_user(argm, &tmp, sizeof(tmp)))
8f8ecbad 1547 return -EFAULT;
1da177e4 1548 }
1da177e4 1549 return 0;
8f8ecbad 1550 } default:
1da177e4
LT		 1551 return (-ENOIOCTLCMD);
1552 case MOXA_LOAD_BIOS:
1553 case MOXA_FIND_BOARD:
1554 case MOXA_LOAD_C320B:
1555 case MOXA_LOAD_CODE:
49cd619c
AC		 1556 if (!capable(CAP_SYS_RAWIO))
1557 return -EPERM;
1da177e4
LT		 1558 break;
1559 }
1560
1561 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1562 return -EFAULT;
a2f72982 1563 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS || dltmp.len < 0)
1da177e4
LT		 1564 return -EINVAL;
1565
1566 switch(cmd)
1567 {
1568 case MOXA_LOAD_BIOS:
1569 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1570 return (i);
1571 case MOXA_FIND_BOARD:
1572 return moxafindcard(dltmp.cardno);
1573 case MOXA_LOAD_C320B:
1574 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1575 default: /* to keep gcc happy */
1576 return (0);
1577 case MOXA_LOAD_CODE:
1578 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1579 if (i == -1)
1580 return (-EFAULT);
1581 return (i);
1582
1583 }
1584}
1585
1586int MoxaDriverPoll(void)
1587{
8f8ecbad 1588 struct moxa_board_conf *brd;
1da177e4
LT		 1589 register ushort temp;
1590 register int card;
1591 void __iomem *ofsAddr;
1592 void __iomem *ip;
1593 int port, p, ports;
1594
1595 if (moxaCard == 0)
1596 return (-1);
1597 for (card = 0; card < MAX_BOARDS; card++) {
8f8ecbad
JS		 1598 brd = &moxa_boards[card];
1599 if (brd->loadstat == 0)
01cfaf0d 1600 continue;
8f8ecbad 1601 if ((ports = brd->numPorts) == 0)
1da177e4 1602 continue;
8f8ecbad
JS		 1603 if (readb(brd->intPend) == 0xff) {
1604 ip = brd->intTable + readb(brd->intNdx);
1da177e4
LT		 1605 p = card * MAX_PORTS_PER_BOARD;
1606 ports <<= 1;
1607 for (port = 0; port < ports; port += 2, p++) {
1608 if ((temp = readw(ip + port)) != 0) {
1609 writew(0, ip + port);
8f8ecbad 1610 ofsAddr = moxa_ports[p].tableAddr;
1da177e4
LT		 1611 if (temp & IntrTx)
1612 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1613 if (temp & IntrBreak) {
8f8ecbad 1614 moxa_ports[p].breakCnt++;
1da177e4
LT		 1615 }
1616 if (temp & IntrLine) {
1617 if (readb(ofsAddr + FlagStat) & DCD_state) {
8f8ecbad
JS		 1618 if ((moxa_ports[p].DCDState & DCD_oldstate) == 0)
1619 moxa_ports[p].DCDState = (DCD_oldstate |
1da177e4
LT		 1620 DCD_changed);
1621 } else {
8f8ecbad
JS		 1622 if (moxa_ports[p].DCDState & DCD_oldstate)
1623 moxa_ports[p].DCDState = DCD_changed;
1da177e4
LT		 1624 }
1625 }
1626 }
1627 }
8f8ecbad 1628 writeb(0, brd->intPend);
1da177e4
LT		 1629 }
1630 if (moxaLowWaterChk) {
1631 p = card * MAX_PORTS_PER_BOARD;
1632 for (port = 0; port < ports; port++, p++) {
8f8ecbad
JS		 1633 if (moxa_ports[p].lowChkFlag) {
1634 moxa_ports[p].lowChkFlag = 0;
1635 ofsAddr = moxa_ports[p].tableAddr;
6f56b658 1636 moxa_low_water_check(ofsAddr);
1da177e4
LT		 1637 }
1638 }
1639 }
1640 }
1641 moxaLowWaterChk = 0;
1642 return (0);
1643}
1644
1645/*****************************************************************************
1646 * Card level function: *
1647 * 1. MoxaPortsOfCard(int cardno); *
1648 *****************************************************************************/
1649int MoxaPortsOfCard(int cardno)
1650{
1651
1652 if (moxa_boards[cardno].boardType == 0)
1653 return (0);
1654 return (moxa_boards[cardno].numPorts);
1655}
1656
1657/*****************************************************************************
1658 * Port level functions: *
1659 * 1. MoxaPortIsValid(int port); *
1660 * 2. MoxaPortEnable(int port); *
1661 * 3. MoxaPortDisable(int port); *
1662 * 4. MoxaPortGetMaxBaud(int port); *
1da177e4 1663 * 6. MoxaPortSetBaud(int port, long baud); *
1da177e4
LT		 1664 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1665 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1666 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1667 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1668 * 12. MoxaPortLineStatus(int port); *
1669 * 13. MoxaPortDCDChange(int port); *
1670 * 14. MoxaPortDCDON(int port); *
1671 * 15. MoxaPortFlushData(int port, int mode); *
1672 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
33f0f88f 1673 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1da177e4
LT		 1674 * 20. MoxaPortTxQueue(int port); *
1675 * 21. MoxaPortTxFree(int port); *
1676 * 22. MoxaPortRxQueue(int port); *
1da177e4
LT		 1677 * 24. MoxaPortTxDisable(int port); *
1678 * 25. MoxaPortTxEnable(int port); *
1da177e4 1679 * 27. MoxaPortResetBrkCnt(int port); *
1da177e4
LT		 1680 * 30. MoxaPortSendBreak(int port, int ticks); *
1681 *****************************************************************************/
1682/*
1683 * Moxa Port Number Description:
1684 *
1685 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1686 * the port number using in MOXA driver functions will be 0 to 31 for
1687 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1688 * to 127 for fourth. For example, if you setup three MOXA boards,
1689 * first board is C218, second board is C320-16 and third board is
1690 * C320-32. The port number of first board (C218 - 8 ports) is from
1691 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1692 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1693 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1694 * 127 will be invalid.
1695 *
1696 *
1697 * Moxa Functions Description:
1698 *
1699 * Function 1: Driver initialization routine, this routine must be
1700 * called when initialized driver.
1701 * Syntax:
1702 * void MoxaDriverInit();
1703 *
1704 *
1705 * Function 2: Moxa driver private IOCTL command processing.
1706 * Syntax:
1707 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1708 *
1709 * unsigned int cmd : IOCTL command
1710 * unsigned long arg : IOCTL argument
1711 * int port : port number (0 - 127)
1712 *
1713 * return: 0 (OK)
1714 * -EINVAL
1715 * -ENOIOCTLCMD
1716 *
1717 *
1718 * Function 3: Moxa driver polling process routine.
1719 * Syntax:
1720 * int MoxaDriverPoll(void);
1721 *
1722 * return: 0 ; polling O.K.
1723 * -1 : no any Moxa card.
1724 *
1725 *
1726 * Function 4: Get the ports of this card.
1727 * Syntax:
1728 * int MoxaPortsOfCard(int cardno);
1729 *
1730 * int cardno : card number (0 - 3)
1731 *
1732 * return: 0 : this card is invalid
1733 * 8/16/24/32
1734 *
1735 *
1736 * Function 5: Check this port is valid or invalid
1737 * Syntax:
1738 * int MoxaPortIsValid(int port);
1739 * int port : port number (0 - 127, ref port description)
1740 *
1741 * return: 0 : this port is invalid
1742 * 1 : this port is valid
1743 *
1744 *
1745 * Function 6: Enable this port to start Tx/Rx data.
1746 * Syntax:
1747 * void MoxaPortEnable(int port);
1748 * int port : port number (0 - 127)
1749 *
1750 *
1751 * Function 7: Disable this port
1752 * Syntax:
1753 * void MoxaPortDisable(int port);
1754 * int port : port number (0 - 127)
1755 *
1756 *
1757 * Function 8: Get the maximun available baud rate of this port.
1758 * Syntax:
1759 * long MoxaPortGetMaxBaud(int port);
1760 * int port : port number (0 - 127)
1761 *
1762 * return: 0 : this port is invalid
1763 * 38400/57600/115200 bps
1764 *
1765 *
1da177e4
LT		 1766 * Function 10: Setting baud rate of this port.
1767 * Syntax:
1768 * long MoxaPortSetBaud(int port, long baud);
1769 * int port : port number (0 - 127)
1770 * long baud : baud rate (50 - 115200)
1771 *
1772 * return: 0 : this port is invalid or baud < 50
1773 * 50 - 115200 : the real baud rate set to the port, if
1774 * the argument baud is large than maximun
1775 * available baud rate, the real setting
1776 * baud rate will be the maximun baud rate.
1777 *
1778 *
1da177e4
LT		 1779 * Function 12: Configure the port.
1780 * Syntax:
606d099c 1781 * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud);
1da177e4 1782 * int port : port number (0 - 127)
606d099c 1783 * struct ktermios * termio : termio structure pointer
c7bce309 1784 * speed_t baud : baud rate
1da177e4
LT		 1785 *
1786 * return: -1 : this port is invalid or termio == NULL
1787 * 0 : setting O.K.
1788 *
1789 *
1790 * Function 13: Get the DTR/RTS state of this port.
1791 * Syntax:
1792 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1793 * int port : port number (0 - 127)
1794 * int * dtrState : pointer to INT to receive the current DTR
1795 * state. (if NULL, this function will not
1796 * write to this address)
1797 * int * rtsState : pointer to INT to receive the current RTS
1798 * state. (if NULL, this function will not
1799 * write to this address)
1800 *
1801 * return: -1 : this port is invalid
1802 * 0 : O.K.
1803 *
1804 *
1805 * Function 14: Setting the DTR/RTS output state of this port.
1806 * Syntax:
1807 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1808 * int port : port number (0 - 127)
1809 * int dtrState : DTR output state (0: off, 1: on)
1810 * int rtsState : RTS output state (0: off, 1: on)
1811 *
1812 *
1813 * Function 15: Setting the flow control of this port.
1814 * Syntax:
1815 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1816 * int txFlow,int xany);
1817 * int port : port number (0 - 127)
1818 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1819 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1820 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1821 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1822 * int xany : S/W XANY flow control (0: no, 1: yes)
1823 *
1824 *
1825 * Function 16: Get ths line status of this port
1826 * Syntax:
1827 * int MoxaPortLineStatus(int port);
1828 * int port : port number (0 - 127)
1829 *
1830 * return: Bit 0 - CTS state (0: off, 1: on)
1831 * Bit 1 - DSR state (0: off, 1: on)
1832 * Bit 2 - DCD state (0: off, 1: on)
1833 *
1834 *
1835 * Function 17: Check the DCD state has changed since the last read
1836 * of this function.
1837 * Syntax:
1838 * int MoxaPortDCDChange(int port);
1839 * int port : port number (0 - 127)
1840 *
1841 * return: 0 : no changed
1842 * 1 : DCD has changed
1843 *
1844 *
1845 * Function 18: Check ths current DCD state is ON or not.
1846 * Syntax:
1847 * int MoxaPortDCDON(int port);
1848 * int port : port number (0 - 127)
1849 *
1850 * return: 0 : DCD off
1851 * 1 : DCD on
1852 *
1853 *
1854 * Function 19: Flush the Rx/Tx buffer data of this port.
1855 * Syntax:
1856 * void MoxaPortFlushData(int port, int mode);
1857 * int port : port number (0 - 127)
1858 * int mode
1859 * 0 : flush the Rx buffer
1860 * 1 : flush the Tx buffer
1861 * 2 : flush the Rx and Tx buffer
1862 *
1863 *
1864 * Function 20: Write data.
1865 * Syntax:
1866 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
1867 * int port : port number (0 - 127)
1868 * unsigned char * buffer : pointer to write data buffer.
1869 * int length : write data length
1870 *
1871 * return: 0 - length : real write data length
1872 *
1873 *
1874 * Function 21: Read data.
1875 * Syntax:
33f0f88f 1876 * int MoxaPortReadData(int port, struct tty_struct *tty);
1da177e4 1877 * int port : port number (0 - 127)
33f0f88f 1878 * struct tty_struct *tty : tty for data
1da177e4
LT		 1879 *
1880 * return: 0 - length : real read data length
1881 *
1882 *
1da177e4
LT		 1883 * Function 24: Get the Tx buffer current queued data bytes
1884 * Syntax:
1885 * int MoxaPortTxQueue(int port);
1886 * int port : port number (0 - 127)
1887 *
1888 * return: .. : Tx buffer current queued data bytes
1889 *
1890 *
1891 * Function 25: Get the Tx buffer current free space
1892 * Syntax:
1893 * int MoxaPortTxFree(int port);
1894 * int port : port number (0 - 127)
1895 *
1896 * return: .. : Tx buffer current free space
1897 *
1898 *
1899 * Function 26: Get the Rx buffer current queued data bytes
1900 * Syntax:
1901 * int MoxaPortRxQueue(int port);
1902 * int port : port number (0 - 127)
1903 *
1904 * return: .. : Rx buffer current queued data bytes
1905 *
1906 *
1da177e4
LT		 1907 * Function 28: Disable port data transmission.
1908 * Syntax:
1909 * void MoxaPortTxDisable(int port);
1910 * int port : port number (0 - 127)
1911 *
1912 *
1913 * Function 29: Enable port data transmission.
1914 * Syntax:
1915 * void MoxaPortTxEnable(int port);
1916 * int port : port number (0 - 127)
1917 *
1918 *
1da177e4
LT		 1919 * Function 31: Get the received BREAK signal count and reset it.
1920 * Syntax:
1921 * int MoxaPortResetBrkCnt(int port);
1922 * int port : port number (0 - 127)
1923 *
1924 * return: 0 - .. : BREAK signal count
1925 *
1926 *
1da177e4
LT		 1927 * Function 34: Send out a BREAK signal.
1928 * Syntax:
1929 * void MoxaPortSendBreak(int port, int ms100);
1930 * int port : port number (0 - 127)
1931 * int ms100 : break signal time interval.
1932 * unit: 100 mini-second. if ms100 == 0, it will
1933 * send out a about 250 ms BREAK signal.
1934 *
1935 */
1936int MoxaPortIsValid(int port)
1937{
1938
1939 if (moxaCard == 0)
1940 return (0);
8f8ecbad 1941 if (moxa_ports[port].chkPort == 0)
1da177e4
LT		 1942 return (0);
1943 return (1);
1944}
1945
1946void MoxaPortEnable(int port)
1947{
1948 void __iomem *ofsAddr;
1949 int MoxaPortLineStatus(int);
1950 short lowwater = 512;
1951
8f8ecbad 1952 ofsAddr = moxa_ports[port].tableAddr;
1da177e4 1953 writew(lowwater, ofsAddr + Low_water);
8f8ecbad 1954 moxa_ports[port].breakCnt = 0;
1da177e4
LT		 1955 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
1956 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
1957 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
1958 } else {
1959 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
1960 }
1961
1962 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
1963 moxafunc(ofsAddr, FC_FlushQueue, 2);
1964
1965 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
1966 MoxaPortLineStatus(port);
1967}
1968
1969void MoxaPortDisable(int port)
1970{
8f8ecbad 1971 void __iomem *ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 1972
1973 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
1974 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
1975 writew(0, ofsAddr + HostStat);
1976 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
1977}
1978
1979long MoxaPortGetMaxBaud(int port)
1980{
1981 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
1982 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
1983 return (460800L);
1984 else
1985 return (921600L);
1986}
1987
1988
1989long MoxaPortSetBaud(int port, long baud)
1990{
1991 void __iomem *ofsAddr;
1992 long max, clock;
1993 unsigned int val;
1994
1995 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
1996 return (0);
8f8ecbad 1997 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 1998 if (baud > max)
1999 baud = max;
2000 if (max == 38400L)
2001 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2002 else if (max == 57600L)
2003 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2004 else
2005 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2006 val = clock / baud;
2007 moxafunc(ofsAddr, FC_SetBaud, val);
2008 baud = clock / val;
8f8ecbad 2009 moxa_ports[port].curBaud = baud;
1da177e4
LT		 2010 return (baud);
2011}
2012
606d099c 2013int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud)
1da177e4
LT		 2014{
2015 void __iomem *ofsAddr;
2016 tcflag_t cflag;
1da177e4
LT		 2017 tcflag_t mode = 0;
2018
8f8ecbad 2019 if (moxa_ports[port].chkPort == 0 || termio == 0)
1da177e4 2020 return (-1);
8f8ecbad 2021 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2022 cflag = termio->c_cflag; /* termio->c_cflag */
2023
2024 mode = termio->c_cflag & CSIZE;
2025 if (mode == CS5)
2026 mode = MX_CS5;
2027 else if (mode == CS6)
2028 mode = MX_CS6;
2029 else if (mode == CS7)
2030 mode = MX_CS7;
2031 else if (mode == CS8)
2032 mode = MX_CS8;
2033
2034 if (termio->c_cflag & CSTOPB) {
2035 if (mode == MX_CS5)
2036 mode |= MX_STOP15;
2037 else
2038 mode |= MX_STOP2;
2039 } else
2040 mode |= MX_STOP1;
2041
2042 if (termio->c_cflag & PARENB) {
2043 if (termio->c_cflag & PARODD)
2044 mode |= MX_PARODD;
2045 else
2046 mode |= MX_PAREVEN;
2047 } else
2048 mode |= MX_PARNONE;
2049
2050 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2051
1da177e4
LT		 2052 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2053 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
c7bce309 2054 if (baud >= 921600L)
1da177e4
LT		 2055 return (-1);
2056 }
db1acaa6 2057 baud = MoxaPortSetBaud(port, baud);
1da177e4
LT		 2058
2059 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2060 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2061 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2062 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
6f56b658 2063 moxa_wait_finish(ofsAddr);
1da177e4
LT		 2064
2065 }
db1acaa6 2066 return (baud);
1da177e4
LT		 2067}
2068
2069int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2070{
2071
2072 if (!MoxaPortIsValid(port))
2073 return (-1);
2074 if (dtrState) {
8f8ecbad 2075 if (moxa_ports[port].lineCtrl & DTR_ON)
1da177e4
LT		 2076 *dtrState = 1;
2077 else
2078 *dtrState = 0;
2079 }
2080 if (rtsState) {
8f8ecbad 2081 if (moxa_ports[port].lineCtrl & RTS_ON)
1da177e4
LT		 2082 *rtsState = 1;
2083 else
2084 *rtsState = 0;
2085 }
2086 return (0);
2087}
2088
2089void MoxaPortLineCtrl(int port, int dtr, int rts)
2090{
2091 void __iomem *ofsAddr;
2092 int mode;
2093
8f8ecbad 2094 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2095 mode = 0;
2096 if (dtr)
2097 mode |= DTR_ON;
2098 if (rts)
2099 mode |= RTS_ON;
8f8ecbad 2100 moxa_ports[port].lineCtrl = mode;
1da177e4
LT		 2101 moxafunc(ofsAddr, FC_LineControl, mode);
2102}
2103
2104void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2105{
2106 void __iomem *ofsAddr;
2107 int mode;
2108
8f8ecbad 2109 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2110 mode = 0;
2111 if (rts)
2112 mode |= RTS_FlowCtl;
2113 if (cts)
2114 mode |= CTS_FlowCtl;
2115 if (txflow)
2116 mode |= Tx_FlowCtl;
2117 if (rxflow)
2118 mode |= Rx_FlowCtl;
2119 if (txany)
2120 mode |= IXM_IXANY;
2121 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2122}
2123
2124int MoxaPortLineStatus(int port)
2125{
2126 void __iomem *ofsAddr;
2127 int val;
2128
8f8ecbad 2129 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2130 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2131 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2132 moxafunc(ofsAddr, FC_LineStatus, 0);
2133 val = readw(ofsAddr + FuncArg);
2134 } else {
2135 val = readw(ofsAddr + FlagStat) >> 4;
2136 }
2137 val &= 0x0B;
2138 if (val & 8) {
2139 val |= 4;
8f8ecbad
JS		 2140 if ((moxa_ports[port].DCDState & DCD_oldstate) == 0)
2141 moxa_ports[port].DCDState = (DCD_oldstate | DCD_changed);
1da177e4 2142 } else {
8f8ecbad
JS		 2143 if (moxa_ports[port].DCDState & DCD_oldstate)
2144 moxa_ports[port].DCDState = DCD_changed;
1da177e4
LT		 2145 }
2146 val &= 7;
2147 return (val);
2148}
2149
2150int MoxaPortDCDChange(int port)
2151{
2152 int n;
2153
8f8ecbad 2154 if (moxa_ports[port].chkPort == 0)
1da177e4 2155 return (0);
8f8ecbad
JS		 2156 n = moxa_ports[port].DCDState;
2157 moxa_ports[port].DCDState &= ~DCD_changed;
1da177e4
LT		 2158 n &= DCD_changed;
2159 return (n);
2160}
2161
2162int MoxaPortDCDON(int port)
2163{
2164 int n;
2165
8f8ecbad 2166 if (moxa_ports[port].chkPort == 0)
1da177e4 2167 return (0);
8f8ecbad 2168 if (moxa_ports[port].DCDState & DCD_oldstate)
1da177e4
LT		 2169 n = 1;
2170 else
2171 n = 0;
2172 return (n);
2173}
2174
1da177e4
LT		 2175int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2176{
2177 int c, total, i;
2178 ushort tail;
2179 int cnt;
2180 ushort head, tx_mask, spage, epage;
2181 ushort pageno, pageofs, bufhead;
2182 void __iomem *baseAddr, *ofsAddr, *ofs;
2183
8f8ecbad
JS		 2184 ofsAddr = moxa_ports[port].tableAddr;
2185 baseAddr = moxa_boards[port / MAX_PORTS_PER_BOARD].basemem;
1da177e4
LT		 2186 tx_mask = readw(ofsAddr + TX_mask);
2187 spage = readw(ofsAddr + Page_txb);
2188 epage = readw(ofsAddr + EndPage_txb);
2189 tail = readw(ofsAddr + TXwptr);
2190 head = readw(ofsAddr + TXrptr);
2191 c = (head > tail) ? (head - tail - 1)
2192 : (head - tail + tx_mask);
2193 if (c > len)
2194 c = len;
2195 moxaLog.txcnt[port] += c;
2196 total = c;
2197 if (spage == epage) {
2198 bufhead = readw(ofsAddr + Ofs_txb);
2199 writew(spage, baseAddr + Control_reg);
2200 while (c > 0) {
2201 if (head > tail)
2202 len = head - tail - 1;
2203 else
2204 len = tx_mask + 1 - tail;
2205 len = (c > len) ? len : c;
2206 ofs = baseAddr + DynPage_addr + bufhead + tail;
2207 for (i = 0; i < len; i++)
2208 writeb(*buffer++, ofs + i);
2209 tail = (tail + len) & tx_mask;
2210 c -= len;
2211 }
2212 writew(tail, ofsAddr + TXwptr);
2213 } else {
2214 len = c;
2215 pageno = spage + (tail >> 13);
2216 pageofs = tail & Page_mask;
2217 do {
2218 cnt = Page_size - pageofs;
2219 if (cnt > c)
2220 cnt = c;
2221 c -= cnt;
2222 writeb(pageno, baseAddr + Control_reg);
2223 ofs = baseAddr + DynPage_addr + pageofs;
2224 for (i = 0; i < cnt; i++)
2225 writeb(*buffer++, ofs + i);
2226 if (c == 0) {
2227 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2228 break;
2229 }
2230 if (++pageno == epage)
2231 pageno = spage;
2232 pageofs = 0;
2233 } while (1);
2234 }
2235 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2236 return (total);
2237}
2238
33f0f88f 2239int MoxaPortReadData(int port, struct tty_struct *tty)
1da177e4
LT		 2240{
2241 register ushort head, pageofs;
2242 int i, count, cnt, len, total, remain;
2243 ushort tail, rx_mask, spage, epage;
2244 ushort pageno, bufhead;
2245 void __iomem *baseAddr, *ofsAddr, *ofs;
2246
8f8ecbad
JS		 2247 ofsAddr = moxa_ports[port].tableAddr;
2248 baseAddr = moxa_boards[port / MAX_PORTS_PER_BOARD].basemem;
1da177e4
LT		 2249 head = readw(ofsAddr + RXrptr);
2250 tail = readw(ofsAddr + RXwptr);
2251 rx_mask = readw(ofsAddr + RX_mask);
2252 spage = readw(ofsAddr + Page_rxb);
2253 epage = readw(ofsAddr + EndPage_rxb);
2254 count = (tail >= head) ? (tail - head)
2255 : (tail - head + rx_mask + 1);
2256 if (count == 0)
33f0f88f 2257 return 0;
1da177e4 2258
33f0f88f 2259 total = count;
1da177e4
LT		 2260 remain = count - total;
2261 moxaLog.rxcnt[port] += total;
2262 count = total;
2263 if (spage == epage) {
2264 bufhead = readw(ofsAddr + Ofs_rxb);
2265 writew(spage, baseAddr + Control_reg);
2266 while (count > 0) {
2267 if (tail >= head)
2268 len = tail - head;
2269 else
2270 len = rx_mask + 1 - head;
2271 len = (count > len) ? len : count;
2272 ofs = baseAddr + DynPage_addr + bufhead + head;
2273 for (i = 0; i < len; i++)
33f0f88f 2274 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
1da177e4
LT		 2275 head = (head + len) & rx_mask;
2276 count -= len;
2277 }
2278 writew(head, ofsAddr + RXrptr);
2279 } else {
2280 len = count;
2281 pageno = spage + (head >> 13);
2282 pageofs = head & Page_mask;
2283 do {
2284 cnt = Page_size - pageofs;
2285 if (cnt > count)
2286 cnt = count;
2287 count -= cnt;
2288 writew(pageno, baseAddr + Control_reg);
2289 ofs = baseAddr + DynPage_addr + pageofs;
2290 for (i = 0; i < cnt; i++)
33f0f88f 2291 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
1da177e4
LT		 2292 if (count == 0) {
2293 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2294 break;
2295 }
2296 if (++pageno == epage)
2297 pageno = spage;
2298 pageofs = 0;
2299 } while (1);
2300 }
2301 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2302 moxaLowWaterChk = 1;
8f8ecbad 2303 moxa_ports[port].lowChkFlag = 1;
1da177e4
LT		 2304 }
2305 return (total);
2306}
2307
2308
2309int MoxaPortTxQueue(int port)
2310{
2311 void __iomem *ofsAddr;
2312 ushort rptr, wptr, mask;
2313 int len;
2314
8f8ecbad 2315 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2316 rptr = readw(ofsAddr + TXrptr);
2317 wptr = readw(ofsAddr + TXwptr);
2318 mask = readw(ofsAddr + TX_mask);
2319 len = (wptr - rptr) & mask;
2320 return (len);
2321}
2322
2323int MoxaPortTxFree(int port)
2324{
2325 void __iomem *ofsAddr;
2326 ushort rptr, wptr, mask;
2327 int len;
2328
8f8ecbad 2329 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2330 rptr = readw(ofsAddr + TXrptr);
2331 wptr = readw(ofsAddr + TXwptr);
2332 mask = readw(ofsAddr + TX_mask);
2333 len = mask - ((wptr - rptr) & mask);
2334 return (len);
2335}
2336
2337int MoxaPortRxQueue(int port)
2338{
2339 void __iomem *ofsAddr;
2340 ushort rptr, wptr, mask;
2341 int len;
2342
8f8ecbad 2343 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2344 rptr = readw(ofsAddr + RXrptr);
2345 wptr = readw(ofsAddr + RXwptr);
2346 mask = readw(ofsAddr + RX_mask);
2347 len = (wptr - rptr) & mask;
2348 return (len);
2349}
2350
2351
2352void MoxaPortTxDisable(int port)
2353{
2354 void __iomem *ofsAddr;
2355
8f8ecbad 2356 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2357 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2358}
2359
2360void MoxaPortTxEnable(int port)
2361{
2362 void __iomem *ofsAddr;
2363
8f8ecbad 2364 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2365 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2366}
2367
2368
2369int MoxaPortResetBrkCnt(int port)
2370{
2371 ushort cnt;
8f8ecbad
JS		 2372 cnt = moxa_ports[port].breakCnt;
2373 moxa_ports[port].breakCnt = 0;
1da177e4
LT		 2374 return (cnt);
2375}
2376
2377
2378void MoxaPortSendBreak(int port, int ms100)
2379{
2380 void __iomem *ofsAddr;
2381
8f8ecbad 2382 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2383 if (ms100) {
2384 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
24c032f1 2385 msleep(ms100 * 10);
1da177e4
LT		 2386 } else {
2387 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
24c032f1 2388 msleep(250);
1da177e4
LT		 2389 }
2390 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2391}
2392
8f8ecbad 2393static int moxa_get_serial_info(struct moxa_port *info,
1da177e4
LT		 2394 struct serial_struct __user *retinfo)
2395{
2396 struct serial_struct tmp;
2397
2398 memset(&tmp, 0, sizeof(tmp));
2399 tmp.type = info->type;
2400 tmp.line = info->port;
2401 tmp.port = 0;
2402 tmp.irq = 0;
2403 tmp.flags = info->asyncflags;
2404 tmp.baud_base = 921600;
2405 tmp.close_delay = info->close_delay;
2406 tmp.closing_wait = info->closing_wait;
2407 tmp.custom_divisor = 0;
2408 tmp.hub6 = 0;
2409 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2410 return -EFAULT;
2411 return (0);
2412}
2413
2414
8f8ecbad 2415static int moxa_set_serial_info(struct moxa_port *info,
1da177e4
LT		 2416 struct serial_struct __user *new_info)
2417{
2418 struct serial_struct new_serial;
2419
2420 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2421 return -EFAULT;
2422
2423 if ((new_serial.irq != 0) ||
2424 (new_serial.port != 0) ||
2425// (new_serial.type != info->type) ||
2426 (new_serial.custom_divisor != 0) ||
2427 (new_serial.baud_base != 921600))
2428 return (-EPERM);
2429
2430 if (!capable(CAP_SYS_ADMIN)) {
2431 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2432 (info->asyncflags & ~ASYNC_USR_MASK)))
2433 return (-EPERM);
2434 } else {
2435 info->close_delay = new_serial.close_delay * HZ / 100;
2436 info->closing_wait = new_serial.closing_wait * HZ / 100;
2437 }
2438
2439 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2440 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2441
2442 if (new_serial.type == PORT_16550A) {
2443 MoxaSetFifo(info->port, 1);
2444 } else {
2445 MoxaSetFifo(info->port, 0);
2446 }
2447
2448 info->type = new_serial.type;
2449 return (0);
2450}
2451
2452
2453
2454/*****************************************************************************
2455 * Static local functions: *
2456 *****************************************************************************/
1da177e4
LT		 2457static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
2458{
2459
2460 writew(arg, ofsAddr + FuncArg);
2461 writew(cmd, ofsAddr + FuncCode);
6f56b658 2462 moxa_wait_finish(ofsAddr);
1da177e4
LT		 2463}
2464
6f56b658 2465static void moxa_wait_finish(void __iomem *ofsAddr)
1da177e4
LT		 2466{
2467 unsigned long i, j;
2468
2469 i = jiffies;
2470 while (readw(ofsAddr + FuncCode) != 0) {
2471 j = jiffies;
2472 if ((j - i) > moxaFuncTout) {
2473 return;
2474 }
2475 }
2476}
2477
6f56b658 2478static void moxa_low_water_check(void __iomem *ofsAddr)
1da177e4
LT		 2479{
2480 int len;
2481 ushort rptr, wptr, mask;
2482
2483 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2484 rptr = readw(ofsAddr + RXrptr);
2485 wptr = readw(ofsAddr + RXwptr);
2486 mask = readw(ofsAddr + RX_mask);
2487 len = (wptr - rptr) & mask;
2488 if (len <= Low_water)
2489 moxafunc(ofsAddr, FC_SendXon, 0);
2490 }
2491}
2492
2493static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2494{
2495 void __iomem *baseAddr;
2496 int i;
2497
a2f72982 2498 if(len < 0 || len > sizeof(moxaBuff))
2499 return -EINVAL;
1da177e4
LT		 2500 if(copy_from_user(moxaBuff, tmp, len))
2501 return -EFAULT;
8f8ecbad 2502 baseAddr = moxa_boards[cardno].basemem;
1da177e4 2503 writeb(HW_reset, baseAddr + Control_reg); /* reset */
24c032f1 2504 msleep(10);
1da177e4
LT		 2505 for (i = 0; i < 4096; i++)
2506 writeb(0, baseAddr + i); /* clear fix page */
2507 for (i = 0; i < len; i++)
2508 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2509 writeb(0, baseAddr + Control_reg); /* restart */
2510 return (0);
2511}
2512
2513static int moxafindcard(int cardno)
2514{
2515 void __iomem *baseAddr;
2516 ushort tmp;
2517
8f8ecbad 2518 baseAddr = moxa_boards[cardno].basemem;
1da177e4
LT		 2519 switch (moxa_boards[cardno].boardType) {
2520 case MOXA_BOARD_C218_ISA:
2521 case MOXA_BOARD_C218_PCI:
2522 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2523 return (-1);
2524 }
2525 break;
2526 case MOXA_BOARD_CP204J:
2527 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2528 return (-1);
2529 }
2530 break;
2531 default:
2532 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2533 return (-1);
2534 }
2535 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2536 return (-2);
2537 }
2538 }
2539 return (0);
2540}
2541
2542static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2543{
2544 void __iomem *baseAddr;
2545 int i;
2546
a2f72982 2547 if(len < 0 || len > sizeof(moxaBuff))
1da177e4
LT		 2548 return -EINVAL;
2549 if(copy_from_user(moxaBuff, tmp, len))
2550 return -EFAULT;
8f8ecbad 2551 baseAddr = moxa_boards[cardno].basemem;
1da177e4
LT		 2552 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2553 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2554 for (i = 0; i < 7168; i++)
2555 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2556 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2557 for (i = 0; i < (len - 7168); i++)
2558 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2559 return (0);
2560}
2561
2562static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2563{
2564 void __iomem *baseAddr, *ofsAddr;
2565 int retval, port, i;
2566
a2f72982 2567 if(len < 0 || len > sizeof(moxaBuff))
2568 return -EINVAL;
1da177e4
LT		 2569 if(copy_from_user(moxaBuff, tmp, len))
2570 return -EFAULT;
8f8ecbad 2571 baseAddr = moxa_boards[cardno].basemem;
1da177e4
LT		 2572 switch (moxa_boards[cardno].boardType) {
2573 case MOXA_BOARD_C218_ISA:
2574 case MOXA_BOARD_C218_PCI:
2575 case MOXA_BOARD_CP204J:
2576 retval = moxaloadc218(cardno, baseAddr, len);
2577 if (retval)
2578 return (retval);
2579 port = cardno * MAX_PORTS_PER_BOARD;
2580 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
8f8ecbad
JS		 2581 struct moxa_port *p = &moxa_ports[port];
2582
2583 p->chkPort = 1;
2584 p->curBaud = 9600L;
2585 p->DCDState = 0;
2586 p->tableAddr = baseAddr + Extern_table + Extern_size * i;
2587 ofsAddr = p->tableAddr;
1da177e4
LT		 2588 writew(C218rx_mask, ofsAddr + RX_mask);
2589 writew(C218tx_mask, ofsAddr + TX_mask);
2590 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2591 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2592
2593 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2594 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2595
2596 }
2597 break;
2598 default:
2599 retval = moxaloadc320(cardno, baseAddr, len,
2600 &moxa_boards[cardno].numPorts);
2601 if (retval)
2602 return (retval);
2603 port = cardno * MAX_PORTS_PER_BOARD;
2604 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
8f8ecbad
JS		 2605 struct moxa_port *p = &moxa_ports[port];
2606
2607 p->chkPort = 1;
2608 p->curBaud = 9600L;
2609 p->DCDState = 0;
2610 p->tableAddr = baseAddr + Extern_table + Extern_size * i;
2611 ofsAddr = p->tableAddr;
1da177e4
LT		 2612 if (moxa_boards[cardno].numPorts == 8) {
2613 writew(C320p8rx_mask, ofsAddr + RX_mask);
2614 writew(C320p8tx_mask, ofsAddr + TX_mask);
2615 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2616 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2617 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2618 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2619
2620 } else if (moxa_boards[cardno].numPorts == 16) {
2621 writew(C320p16rx_mask, ofsAddr + RX_mask);
2622 writew(C320p16tx_mask, ofsAddr + TX_mask);
2623 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2624 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2625 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2626 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2627
2628 } else if (moxa_boards[cardno].numPorts == 24) {
2629 writew(C320p24rx_mask, ofsAddr + RX_mask);
2630 writew(C320p24tx_mask, ofsAddr + TX_mask);
2631 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2632 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2633 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2634 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2635 } else if (moxa_boards[cardno].numPorts == 32) {
2636 writew(C320p32rx_mask, ofsAddr + RX_mask);
2637 writew(C320p32tx_mask, ofsAddr + TX_mask);
2638 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2639 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2640 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2641 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2642 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2643 }
2644 }
2645 break;
2646 }
8f8ecbad 2647 moxa_boards[cardno].loadstat = 1;
1da177e4
LT		 2648 return (0);
2649}
2650
2651static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
2652{
2653 char retry;
2654 int i, j, len1, len2;
2655 ushort usum, *ptr, keycode;
2656
2657 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2658 keycode = CP204J_KeyCode;
2659 else
2660 keycode = C218_KeyCode;
2661 usum = 0;
2662 len1 = len >> 1;
2663 ptr = (ushort *) moxaBuff;
2664 for (i = 0; i < len1; i++)
01cfaf0d 2665 usum += le16_to_cpu(*(ptr + i));
1da177e4
LT		 2666 retry = 0;
2667 do {
2668 len1 = len >> 1;
2669 j = 0;
2670 while (len1) {
2671 len2 = (len1 > 2048) ? 2048 : len1;
2672 len1 -= len2;
2673 for (i = 0; i < len2 << 1; i++)
2674 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2675 j += i;
2676
2677 writew(len2, baseAddr + C218DLoad_len);
2678 writew(0, baseAddr + C218_key);
2679 for (i = 0; i < 100; i++) {
2680 if (readw(baseAddr + C218_key) == keycode)
2681 break;
24c032f1 2682 msleep(10);
1da177e4
LT		 2683 }
2684 if (readw(baseAddr + C218_key) != keycode) {
2685 return (-1);
2686 }
2687 }
2688 writew(0, baseAddr + C218DLoad_len);
2689 writew(usum, baseAddr + C218check_sum);
2690 writew(0, baseAddr + C218_key);
2691 for (i = 0; i < 100; i++) {
2692 if (readw(baseAddr + C218_key) == keycode)
2693 break;
24c032f1 2694 msleep(10);
1da177e4
LT		 2695 }
2696 retry++;
2697 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2698 if (readb(baseAddr + C218chksum_ok) != 1) {
2699 return (-1);
2700 }
2701 writew(0, baseAddr + C218_key);
2702 for (i = 0; i < 100; i++) {
2703 if (readw(baseAddr + Magic_no) == Magic_code)
2704 break;
24c032f1 2705 msleep(10);
1da177e4
LT		 2706 }
2707 if (readw(baseAddr + Magic_no) != Magic_code) {
2708 return (-1);
2709 }
2710 writew(1, baseAddr + Disable_IRQ);
2711 writew(0, baseAddr + Magic_no);
2712 for (i = 0; i < 100; i++) {
2713 if (readw(baseAddr + Magic_no) == Magic_code)
2714 break;
24c032f1 2715 msleep(10);
1da177e4
LT		 2716 }
2717 if (readw(baseAddr + Magic_no) != Magic_code) {
2718 return (-1);
2719 }
2720 moxaCard = 1;
8f8ecbad
JS		 2721 moxa_boards[cardno].intNdx = baseAddr + IRQindex;
2722 moxa_boards[cardno].intPend = baseAddr + IRQpending;
2723 moxa_boards[cardno].intTable = baseAddr + IRQtable;
1da177e4
LT		 2724 return (0);
2725}
2726
2727static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
2728{
2729 ushort usum;
2730 int i, j, wlen, len2, retry;
2731 ushort *uptr;
2732
2733 usum = 0;
2734 wlen = len >> 1;
2735 uptr = (ushort *) moxaBuff;
2736 for (i = 0; i < wlen; i++)
01cfaf0d 2737 usum += le16_to_cpu(uptr[i]);
1da177e4
LT		 2738 retry = 0;
2739 j = 0;
2740 do {
2741 while (wlen) {
2742 if (wlen > 2048)
2743 len2 = 2048;
2744 else
2745 len2 = wlen;
2746 wlen -= len2;
2747 len2 <<= 1;
2748 for (i = 0; i < len2; i++)
2749 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
2750 len2 >>= 1;
2751 j += i;
2752 writew(len2, baseAddr + C320DLoad_len);
2753 writew(0, baseAddr + C320_key);
2754 for (i = 0; i < 10; i++) {
2755 if (readw(baseAddr + C320_key) == C320_KeyCode)
2756 break;
24c032f1 2757 msleep(10);
1da177e4
LT		 2758 }
2759 if (readw(baseAddr + C320_key) != C320_KeyCode)
2760 return (-1);
2761 }
2762 writew(0, baseAddr + C320DLoad_len);
2763 writew(usum, baseAddr + C320check_sum);
2764 writew(0, baseAddr + C320_key);
2765 for (i = 0; i < 10; i++) {
2766 if (readw(baseAddr + C320_key) == C320_KeyCode)
2767 break;
24c032f1 2768 msleep(10);
1da177e4
LT		 2769 }
2770 retry++;
2771 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
2772 if (readb(baseAddr + C320chksum_ok) != 1)
2773 return (-1);
2774 writew(0, baseAddr + C320_key);
2775 for (i = 0; i < 600; i++) {
2776 if (readw(baseAddr + Magic_no) == Magic_code)
2777 break;
24c032f1 2778 msleep(10);
1da177e4
LT		 2779 }
2780 if (readw(baseAddr + Magic_no) != Magic_code)
2781 return (-100);
2782
2783 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
2784 writew(0x3800, baseAddr + TMS320_PORT1);
2785 writew(0x3900, baseAddr + TMS320_PORT2);
2786 writew(28499, baseAddr + TMS320_CLOCK);
2787 } else {
2788 writew(0x3200, baseAddr + TMS320_PORT1);
2789 writew(0x3400, baseAddr + TMS320_PORT2);
2790 writew(19999, baseAddr + TMS320_CLOCK);
2791 }
2792 writew(1, baseAddr + Disable_IRQ);
2793 writew(0, baseAddr + Magic_no);
2794 for (i = 0; i < 500; i++) {
2795 if (readw(baseAddr + Magic_no) == Magic_code)
2796 break;
24c032f1 2797 msleep(10);
1da177e4
LT		 2798 }
2799 if (readw(baseAddr + Magic_no) != Magic_code)
2800 return (-102);
2801
2802 j = readw(baseAddr + Module_cnt);
2803 if (j <= 0)
2804 return (-101);
2805 *numPorts = j * 8;
2806 writew(j, baseAddr + Module_no);
2807 writew(0, baseAddr + Magic_no);
2808 for (i = 0; i < 600; i++) {
2809 if (readw(baseAddr + Magic_no) == Magic_code)
2810 break;
24c032f1 2811 msleep(10);
1da177e4
LT		 2812 }
2813 if (readw(baseAddr + Magic_no) != Magic_code)
2814 return (-102);
2815 moxaCard = 1;
8f8ecbad
JS		 2816 moxa_boards[cardno].intNdx = baseAddr + IRQindex;
2817 moxa_boards[cardno].intPend = baseAddr + IRQpending;
2818 moxa_boards[cardno].intTable = baseAddr + IRQtable;
1da177e4
LT		 2819 return (0);
2820}
2821
1da177e4
LT		 2822static void MoxaSetFifo(int port, int enable)
2823{
8f8ecbad 2824 void __iomem *ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2825
2826 if (!enable) {
2827 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
2828 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
2829 } else {
2830 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
2831 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
2832 }
2833}
Linux kernel - Deliverables
This page took 0.505496 seconds and 5 git commands to generate.