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Char: moxa, cleanup module-param passed isa init
[linux-2.6-block.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];
293 board->basemem = pci_iomap(pdev, 2, 0x4000);
7aeb95da
JS		 294 if (board->basemem == NULL) {
295 dev_err(&pdev->dev, "can't remap io space 2\n");
9cde5bf0 296 goto err;
7aeb95da 297 }
9cde5bf0 298
1da177e4
LT		 299 board->boardType = board_type;
300 switch (board_type) {
301 case MOXA_BOARD_C218_ISA:
302 case MOXA_BOARD_C218_PCI:
303 board->numPorts = 8;
304 break;
305
306 case MOXA_BOARD_CP204J:
307 board->numPorts = 4;
308 break;
309 default:
310 board->numPorts = 0;
311 break;
312 }
313 board->busType = MOXA_BUS_TYPE_PCI;
a784bf7c 314
9cde5bf0 315 pci_set_drvdata(pdev, board);
1da177e4
LT		 316
317 return (0);
9cde5bf0
JS		 318err:
319 return retval;
320}
321
322static void __devexit moxa_pci_remove(struct pci_dev *pdev)
323{
324 struct moxa_board_conf *brd = pci_get_drvdata(pdev);
325
326 pci_iounmap(pdev, brd->basemem);
327 brd->basemem = NULL;
1da177e4 328}
a784bf7c
JS		 329
330static struct pci_driver moxa_pci_driver = {
331 .name = "moxa",
332 .id_table = moxa_pcibrds,
333 .probe = moxa_pci_probe,
334 .remove = __devexit_p(moxa_pci_remove)
335};
1da177e4
LT		 336#endif /* CONFIG_PCI */
337
338static int __init moxa_init(void)
339{
8f8ecbad 340 struct moxa_port *ch;
d353eca4
JS		 341 unsigned int i, isabrds = 0;
342 int retval = 0;
1da177e4 343
7aeb95da
JS		 344 printk(KERN_INFO "MOXA Intellio family driver version %s\n",
345 MOXA_VERSION);
1da177e4
LT		 346 moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
347 if (!moxaDriver)
348 return -ENOMEM;
349
1da177e4 350 moxaDriver->owner = THIS_MODULE;
9b4e3b13 351 moxaDriver->name = "ttyMX";
1da177e4
LT		 352 moxaDriver->major = ttymajor;
353 moxaDriver->minor_start = 0;
354 moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
355 moxaDriver->subtype = SERIAL_TYPE_NORMAL;
356 moxaDriver->init_termios = tty_std_termios;
1da177e4 357 moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
606d099c
AC		 358 moxaDriver->init_termios.c_ispeed = 9600;
359 moxaDriver->init_termios.c_ospeed = 9600;
1da177e4
LT		 360 moxaDriver->flags = TTY_DRIVER_REAL_RAW;
361 tty_set_operations(moxaDriver, &moxa_ops);
362
8f8ecbad 363 for (i = 0, ch = moxa_ports; i < MAX_PORTS; i++, ch++) {
1da177e4
LT		 364 ch->type = PORT_16550A;
365 ch->port = i;
1da177e4
LT		 366 ch->close_delay = 5 * HZ / 10;
367 ch->closing_wait = 30 * HZ;
1da177e4
LT		 368 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
369 init_waitqueue_head(&ch->open_wait);
95e07914 370 init_completion(&ch->close_wait);
8f8ecbad 371
6f56b658 372 setup_timer(&ch->emptyTimer, moxa_check_xmit_empty,
8f8ecbad 373 (unsigned long)ch);
1da177e4
LT		 374 }
375
7aeb95da 376 pr_debug("Moxa tty devices major number = %d\n", ttymajor);
1da177e4
LT		 377
378 if (tty_register_driver(moxaDriver)) {
379 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
380 put_tty_driver(moxaDriver);
381 return -1;
382 }
1da177e4 383
aa7e5221 384 mod_timer(&moxaTimer, jiffies + HZ / 50);
1da177e4 385
d353eca4 386 /* Find the boards defined from module args. */
1da177e4 387#ifdef MODULE
d353eca4
JS		 388 {
389 struct moxa_board_conf *brd = moxa_boards;
1da177e4 390 for (i = 0; i < MAX_BOARDS; i++) {
d353eca4
JS		 391 if (!baseaddr[i])
392 break;
393 if (type[i] == MOXA_BOARD_C218_ISA ||
394 type[i] == MOXA_BOARD_C320_ISA) {
7aeb95da 395 pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n",
d353eca4
JS		 396 isabrds + 1, moxa_brdname[type[i] - 1],
397 baseaddr[i]);
398 brd->boardType = type[i];
399 brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 :
400 numports[i];
401 brd->busType = MOXA_BUS_TYPE_ISA;
402 brd->basemem = ioremap(baseaddr[i], 0x4000);
403 if (!brd->basemem) {
404 printk(KERN_ERR "moxa: can't remap %lx\n",
405 baseaddr[i]);
1da177e4
LT		 406 continue;
407 }
d353eca4
JS		 408
409 brd++;
410 isabrds++;
1da177e4
LT		 411 }
412 }
d353eca4 413 }
1da177e4 414#endif
a784bf7c 415
1da177e4 416#ifdef CONFIG_PCI
a784bf7c
JS		 417 retval = pci_register_driver(&moxa_pci_driver);
418 if (retval) {
419 printk(KERN_ERR "Can't register moxa pci driver!\n");
d353eca4 420 if (isabrds)
a784bf7c 421 retval = 0;
1da177e4
LT		 422 }
423#endif
a784bf7c 424
a784bf7c 425 return retval;
1da177e4
LT		 426}
427
428static void __exit moxa_exit(void)
429{
430 int i;
431
c251ae0d 432 del_timer_sync(&moxaTimer);
1da177e4
LT		 433
434 for (i = 0; i < MAX_PORTS; i++)
8f8ecbad 435 del_timer_sync(&moxa_ports[i].emptyTimer);
1da177e4
LT		 436
437 if (tty_unregister_driver(moxaDriver))
7aeb95da
JS		 438 printk(KERN_ERR "Couldn't unregister MOXA Intellio family "
439 "serial driver\n");
1da177e4 440 put_tty_driver(moxaDriver);
86fbf148 441
9cde5bf0 442#ifdef CONFIG_PCI
a784bf7c 443 pci_unregister_driver(&moxa_pci_driver);
9cde5bf0 444#endif
a784bf7c
JS		 445
446 for (i = 0; i < MAX_BOARDS; i++)
8f8ecbad
JS		 447 if (moxa_boards[i].basemem)
448 iounmap(moxa_boards[i].basemem);
1da177e4
LT		 449}
450
451module_init(moxa_init);
452module_exit(moxa_exit);
453
1da177e4
LT		 454static int moxa_open(struct tty_struct *tty, struct file *filp)
455{
8f8ecbad 456 struct moxa_port *ch;
1da177e4
LT		 457 int port;
458 int retval;
1da177e4 459
11324edd 460 port = tty->index;
1da177e4
LT		 461 if (port == MAX_PORTS) {
462 return (0);
463 }
464 if (!MoxaPortIsValid(port)) {
465 tty->driver_data = NULL;
466 return (-ENODEV);
467 }
1da177e4 468
8f8ecbad 469 ch = &moxa_ports[port];
1da177e4
LT		 470 ch->count++;
471 tty->driver_data = ch;
472 ch->tty = tty;
473 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
474 ch->statusflags = 0;
db1acaa6 475 moxa_set_tty_param(tty, tty->termios);
1da177e4
LT		 476 MoxaPortLineCtrl(ch->port, 1, 1);
477 MoxaPortEnable(ch->port);
478 ch->asyncflags |= ASYNC_INITIALIZED;
479 }
6f56b658 480 retval = moxa_block_till_ready(tty, filp, ch);
1da177e4
LT		 481
482 moxa_unthrottle(tty);
483
484 if (ch->type == PORT_16550A) {
485 MoxaSetFifo(ch->port, 1);
486 } else {
487 MoxaSetFifo(ch->port, 0);
488 }
489
490 return (retval);
491}
492
493static void moxa_close(struct tty_struct *tty, struct file *filp)
494{
8f8ecbad 495 struct moxa_port *ch;
1da177e4
LT		 496 int port;
497
11324edd 498 port = tty->index;
1da177e4
LT		 499 if (port == MAX_PORTS) {
500 return;
501 }
502 if (!MoxaPortIsValid(port)) {
7aeb95da 503 pr_debug("Invalid portno in moxa_close\n");
1da177e4
LT		 504 tty->driver_data = NULL;
505 return;
506 }
507 if (tty->driver_data == NULL) {
508 return;
509 }
510 if (tty_hung_up_p(filp)) {
511 return;
512 }
8f8ecbad 513 ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 514
515 if ((tty->count == 1) && (ch->count != 1)) {
7aeb95da
JS		 516 printk(KERN_WARNING "moxa_close: bad serial port count; "
517 "tty->count is 1, ch->count is %d\n", ch->count);
1da177e4
LT		 518 ch->count = 1;
519 }
520 if (--ch->count < 0) {
7aeb95da
JS		 521 printk(KERN_WARNING "moxa_close: bad serial port count, "
522 "device=%s\n", tty->name);
1da177e4
LT		 523 ch->count = 0;
524 }
525 if (ch->count) {
526 return;
527 }
528 ch->asyncflags |= ASYNC_CLOSING;
529
530 ch->cflag = tty->termios->c_cflag;
531 if (ch->asyncflags & ASYNC_INITIALIZED) {
6f56b658 532 moxa_setup_empty_event(tty);
1da177e4 533 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
8f8ecbad 534 del_timer_sync(&moxa_ports[ch->port].emptyTimer);
1da177e4 535 }
6f56b658 536 moxa_shut_down(ch);
1da177e4
LT		 537 MoxaPortFlushData(port, 2);
538
539 if (tty->driver->flush_buffer)
540 tty->driver->flush_buffer(tty);
541 tty_ldisc_flush(tty);
542
543 tty->closing = 0;
544 ch->event = 0;
545 ch->tty = NULL;
546 if (ch->blocked_open) {
547 if (ch->close_delay) {
548 msleep_interruptible(jiffies_to_msecs(ch->close_delay));
549 }
550 wake_up_interruptible(&ch->open_wait);
551 }
552 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
95e07914 553 complete_all(&ch->close_wait);
1da177e4
LT		 554}
555
556static int moxa_write(struct tty_struct *tty,
557 const unsigned char *buf, int count)
558{
8f8ecbad 559 struct moxa_port *ch;
1da177e4
LT		 560 int len, port;
561 unsigned long flags;
562
8f8ecbad 563 ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 564 if (ch == NULL)
565 return (0);
566 port = ch->port;
33f0f88f
AC		 567
568 spin_lock_irqsave(&moxa_lock, flags);
1da177e4 569 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
33f0f88f 570 spin_unlock_irqrestore(&moxa_lock, flags);
1da177e4
LT		 571
572 /*********************************************
573 if ( !(ch->statusflags & LOWWAIT) &&
574 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
575 ************************************************/
576 ch->statusflags |= LOWWAIT;
577 return (len);
578}
579
580static int moxa_write_room(struct tty_struct *tty)
581{
8f8ecbad 582 struct moxa_port *ch;
1da177e4
LT		 583
584 if (tty->stopped)
585 return (0);
8f8ecbad 586 ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 587 if (ch == NULL)
588 return (0);
589 return (MoxaPortTxFree(ch->port));
590}
591
592static void moxa_flush_buffer(struct tty_struct *tty)
593{
8f8ecbad 594 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 595
596 if (ch == NULL)
597 return;
598 MoxaPortFlushData(ch->port, 1);
599 tty_wakeup(tty);
600}
601
602static int moxa_chars_in_buffer(struct tty_struct *tty)
603{
604 int chars;
8f8ecbad 605 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 606
607 /*
608 * Sigh...I have to check if driver_data is NULL here, because
609 * if an open() fails, the TTY subsystem eventually calls
610 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
611 * routine. And since the open() failed, we return 0 here. TDJ
612 */
613 if (ch == NULL)
614 return (0);
615 chars = MoxaPortTxQueue(ch->port);
616 if (chars) {
617 /*
618 * Make it possible to wakeup anything waiting for output
619 * in tty_ioctl.c, etc.
620 */
621 if (!(ch->statusflags & EMPTYWAIT))
6f56b658 622 moxa_setup_empty_event(tty);
1da177e4
LT		 623 }
624 return (chars);
625}
626
627static void moxa_flush_chars(struct tty_struct *tty)
628{
629 /*
630 * Don't think I need this, because this is called to empty the TX
631 * buffer for the 16450, 16550, etc.
632 */
633}
634
635static void moxa_put_char(struct tty_struct *tty, unsigned char c)
636{
8f8ecbad 637 struct moxa_port *ch;
1da177e4
LT		 638 int port;
639 unsigned long flags;
640
8f8ecbad 641 ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 642 if (ch == NULL)
643 return;
644 port = ch->port;
33f0f88f 645 spin_lock_irqsave(&moxa_lock, flags);
f204d267 646 MoxaPortWriteData(port, &c, 1);
33f0f88f 647 spin_unlock_irqrestore(&moxa_lock, flags);
1da177e4
LT		 648 /************************************************
649 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
650 *************************************************/
651 ch->statusflags |= LOWWAIT;
652}
653
654static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
655{
8f8ecbad 656 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 657 int port;
658 int flag = 0, dtr, rts;
659
11324edd 660 port = tty->index;
1da177e4
LT		 661 if ((port != MAX_PORTS) && (!ch))
662 return (-EINVAL);
663
664 MoxaPortGetLineOut(ch->port, &dtr, &rts);
665 if (dtr)
666 flag |= TIOCM_DTR;
667 if (rts)
668 flag |= TIOCM_RTS;
669 dtr = MoxaPortLineStatus(ch->port);
670 if (dtr & 1)
671 flag |= TIOCM_CTS;
672 if (dtr & 2)
673 flag |= TIOCM_DSR;
674 if (dtr & 4)
675 flag |= TIOCM_CD;
676 return flag;
677}
678
679static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
680 unsigned int set, unsigned int clear)
681{
8f8ecbad 682 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 683 int port;
684 int dtr, rts;
685
11324edd 686 port = tty->index;
1da177e4
LT		 687 if ((port != MAX_PORTS) && (!ch))
688 return (-EINVAL);
689
690 MoxaPortGetLineOut(ch->port, &dtr, &rts);
691 if (set & TIOCM_RTS)
692 rts = 1;
693 if (set & TIOCM_DTR)
694 dtr = 1;
695 if (clear & TIOCM_RTS)
696 rts = 0;
697 if (clear & TIOCM_DTR)
698 dtr = 0;
699 MoxaPortLineCtrl(ch->port, dtr, rts);
700 return 0;
701}
702
703static int moxa_ioctl(struct tty_struct *tty, struct file *file,
704 unsigned int cmd, unsigned long arg)
705{
8f8ecbad 706 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 707 register int port;
708 void __user *argp = (void __user *)arg;
709 int retval;
710
11324edd 711 port = tty->index;
1da177e4
LT		 712 if ((port != MAX_PORTS) && (!ch))
713 return (-EINVAL);
714
715 switch (cmd) {
716 case TCSBRK: /* SVID version: non-zero arg --> no break */
717 retval = tty_check_change(tty);
718 if (retval)
719 return (retval);
6f56b658 720 moxa_setup_empty_event(tty);
1da177e4
LT		 721 tty_wait_until_sent(tty, 0);
722 if (!arg)
723 MoxaPortSendBreak(ch->port, 0);
724 return (0);
725 case TCSBRKP: /* support for POSIX tcsendbreak() */
726 retval = tty_check_change(tty);
727 if (retval)
728 return (retval);
6f56b658 729 moxa_setup_empty_event(tty);
1da177e4
LT		 730 tty_wait_until_sent(tty, 0);
731 MoxaPortSendBreak(ch->port, arg);
732 return (0);
733 case TIOCGSOFTCAR:
734 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
735 case TIOCSSOFTCAR:
736 if(get_user(retval, (unsigned long __user *) argp))
737 return -EFAULT;
738 arg = retval;
739 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
740 (arg ? CLOCAL : 0));
741 if (C_CLOCAL(tty))
742 ch->asyncflags &= ~ASYNC_CHECK_CD;
743 else
744 ch->asyncflags |= ASYNC_CHECK_CD;
745 return (0);
746 case TIOCGSERIAL:
747 return moxa_get_serial_info(ch, argp);
748
749 case TIOCSSERIAL:
750 return moxa_set_serial_info(ch, argp);
751 default:
752 retval = MoxaDriverIoctl(cmd, arg, port);
753 }
754 return (retval);
755}
756
757static void moxa_throttle(struct tty_struct *tty)
758{
8f8ecbad 759 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 760
761 ch->statusflags |= THROTTLE;
762}
763
764static void moxa_unthrottle(struct tty_struct *tty)
765{
8f8ecbad 766 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 767
768 ch->statusflags &= ~THROTTLE;
769}
770
771static void moxa_set_termios(struct tty_struct *tty,
606d099c 772 struct ktermios *old_termios)
1da177e4 773{
8f8ecbad 774 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 775
776 if (ch == NULL)
777 return;
db1acaa6 778 moxa_set_tty_param(tty, old_termios);
1da177e4
LT		 779 if (!(old_termios->c_cflag & CLOCAL) &&
780 (tty->termios->c_cflag & CLOCAL))
781 wake_up_interruptible(&ch->open_wait);
782}
783
784static void moxa_stop(struct tty_struct *tty)
785{
8f8ecbad 786 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 787
788 if (ch == NULL)
789 return;
790 MoxaPortTxDisable(ch->port);
791 ch->statusflags |= TXSTOPPED;
792}
793
794
795static void moxa_start(struct tty_struct *tty)
796{
8f8ecbad 797 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 798
799 if (ch == NULL)
800 return;
801
802 if (!(ch->statusflags & TXSTOPPED))
803 return;
804
805 MoxaPortTxEnable(ch->port);
806 ch->statusflags &= ~TXSTOPPED;
807}
808
809static void moxa_hangup(struct tty_struct *tty)
810{
8f8ecbad 811 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 812
813 moxa_flush_buffer(tty);
6f56b658 814 moxa_shut_down(ch);
1da177e4
LT		 815 ch->event = 0;
816 ch->count = 0;
817 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
818 ch->tty = NULL;
819 wake_up_interruptible(&ch->open_wait);
820}
821
822static void moxa_poll(unsigned long ignored)
823{
824 register int card;
8f8ecbad 825 struct moxa_port *ch;
1da177e4
LT		 826 struct tty_struct *tp;
827 int i, ports;
828
1da177e4
LT		 829 del_timer(&moxaTimer);
830
831 if (MoxaDriverPoll() < 0) {
aa7e5221 832 mod_timer(&moxaTimer, jiffies + HZ / 50);
1da177e4
LT		 833 return;
834 }
835 for (card = 0; card < MAX_BOARDS; card++) {
836 if ((ports = MoxaPortsOfCard(card)) <= 0)
837 continue;
8f8ecbad 838 ch = &moxa_ports[card * MAX_PORTS_PER_BOARD];
1da177e4
LT		 839 for (i = 0; i < ports; i++, ch++) {
840 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
841 continue;
842 if (!(ch->statusflags & THROTTLE) &&
843 (MoxaPortRxQueue(ch->port) > 0))
6f56b658 844 moxa_receive_data(ch);
1da177e4
LT		 845 if ((tp = ch->tty) == 0)
846 continue;
847 if (ch->statusflags & LOWWAIT) {
848 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
849 if (!tp->stopped) {
850 ch->statusflags &= ~LOWWAIT;
851 tty_wakeup(tp);
852 }
853 }
854 }
855 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
856 tty_insert_flip_char(tp, 0, TTY_BREAK);
857 tty_schedule_flip(tp);
858 }
859 if (MoxaPortDCDChange(ch->port)) {
860 if (ch->asyncflags & ASYNC_CHECK_CD) {
861 if (MoxaPortDCDON(ch->port))
862 wake_up_interruptible(&ch->open_wait);
863 else {
ba196df3
JS		 864 tty_hangup(tp);
865 wake_up_interruptible(&ch->open_wait);
866 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
1da177e4
LT		 867 }
868 }
869 }
870 }
871 }
872
aa7e5221 873 mod_timer(&moxaTimer, jiffies + HZ / 50);
1da177e4
LT		 874}
875
876/******************************************************************************/
877
db1acaa6 878static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios)
1da177e4 879{
606d099c 880 register struct ktermios *ts;
8f8ecbad 881 struct moxa_port *ch;
db1acaa6 882 int rts, cts, txflow, rxflow, xany, baud;
1da177e4 883
8f8ecbad 884 ch = (struct moxa_port *) tty->driver_data;
1da177e4
LT		 885 ts = tty->termios;
886 if (ts->c_cflag & CLOCAL)
887 ch->asyncflags &= ~ASYNC_CHECK_CD;
888 else
889 ch->asyncflags |= ASYNC_CHECK_CD;
890 rts = cts = txflow = rxflow = xany = 0;
891 if (ts->c_cflag & CRTSCTS)
892 rts = cts = 1;
893 if (ts->c_iflag & IXON)
894 txflow = 1;
895 if (ts->c_iflag & IXOFF)
896 rxflow = 1;
897 if (ts->c_iflag & IXANY)
898 xany = 1;
db1acaa6
AC		 899
900 /* Clear the features we don't support */
901 ts->c_cflag &= ~CMSPAR;
1da177e4 902 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
db1acaa6
AC		 903 baud = MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty));
904 if (baud == -1)
905 baud = tty_termios_baud_rate(old_termios);
906 /* Not put the baud rate into the termios data */
907 tty_encode_baud_rate(tty, baud, baud);
1da177e4
LT		 908}
909
6f56b658 910static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp,
8f8ecbad 911 struct moxa_port *ch)
1da177e4
LT		 912{
913 DECLARE_WAITQUEUE(wait,current);
914 unsigned long flags;
915 int retval;
916 int do_clocal = C_CLOCAL(tty);
917
918 /*
919 * If the device is in the middle of being closed, then block
920 * until it's done, and then try again.
921 */
922 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
923 if (ch->asyncflags & ASYNC_CLOSING)
95e07914 924 wait_for_completion_interruptible(&ch->close_wait);
1da177e4
LT		 925#ifdef SERIAL_DO_RESTART
926 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
927 return (-EAGAIN);
928 else
929 return (-ERESTARTSYS);
930#else
931 return (-EAGAIN);
932#endif
933 }
934 /*
935 * If non-blocking mode is set, then make the check up front
936 * and then exit.
937 */
938 if (filp->f_flags & O_NONBLOCK) {
939 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
940 return (0);
941 }
942 /*
943 * Block waiting for the carrier detect and the line to become free
944 */
945 retval = 0;
946 add_wait_queue(&ch->open_wait, &wait);
7aeb95da
JS		 947 pr_debug("block_til_ready before block: ttys%d, count = %d\n",
948 ch->port, ch->count);
33f0f88f 949 spin_lock_irqsave(&moxa_lock, flags);
1da177e4
LT		 950 if (!tty_hung_up_p(filp))
951 ch->count--;
1da177e4 952 ch->blocked_open++;
33f0f88f
AC		 953 spin_unlock_irqrestore(&moxa_lock, flags);
954
1da177e4
LT		 955 while (1) {
956 set_current_state(TASK_INTERRUPTIBLE);
957 if (tty_hung_up_p(filp) ||
958 !(ch->asyncflags & ASYNC_INITIALIZED)) {
959#ifdef SERIAL_DO_RESTART
960 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
961 retval = -EAGAIN;
962 else
963 retval = -ERESTARTSYS;
964#else
965 retval = -EAGAIN;
966#endif
967 break;
968 }
969 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
970 MoxaPortDCDON(ch->port)))
971 break;
972
973 if (signal_pending(current)) {
974 retval = -ERESTARTSYS;
975 break;
976 }
977 schedule();
978 }
979 set_current_state(TASK_RUNNING);
980 remove_wait_queue(&ch->open_wait, &wait);
33f0f88f
AC		 981
982 spin_lock_irqsave(&moxa_lock, flags);
1da177e4
LT		 983 if (!tty_hung_up_p(filp))
984 ch->count++;
985 ch->blocked_open--;
33f0f88f 986 spin_unlock_irqrestore(&moxa_lock, flags);
7aeb95da
JS		 987 pr_debug("block_til_ready after blocking: ttys%d, count = %d\n",
988 ch->port, ch->count);
1da177e4
LT		 989 if (retval)
990 return (retval);
33f0f88f 991 /* FIXME: review to see if we need to use set_bit on these */
1da177e4 992 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
33f0f88f 993 return 0;
1da177e4
LT		 994}
995
6f56b658 996static void moxa_setup_empty_event(struct tty_struct *tty)
1da177e4 997{
8f8ecbad 998 struct moxa_port *ch = tty->driver_data;
1da177e4
LT		 999 unsigned long flags;
1000
33f0f88f 1001 spin_lock_irqsave(&moxa_lock, flags);
1da177e4 1002 ch->statusflags |= EMPTYWAIT;
8f8ecbad 1003 mod_timer(&moxa_ports[ch->port].emptyTimer, jiffies + HZ);
33f0f88f 1004 spin_unlock_irqrestore(&moxa_lock, flags);
1da177e4
LT		 1005}
1006
6f56b658 1007static void moxa_check_xmit_empty(unsigned long data)
1da177e4 1008{
8f8ecbad 1009 struct moxa_port *ch;
1da177e4 1010
8f8ecbad 1011 ch = (struct moxa_port *) data;
1da177e4
LT		 1012 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1013 if (MoxaPortTxQueue(ch->port) == 0) {
1014 ch->statusflags &= ~EMPTYWAIT;
1015 tty_wakeup(ch->tty);
1016 return;
1017 }
c4342205
JS		 1018 mod_timer(&moxa_ports[ch->port].emptyTimer,
1019 round_jiffies(jiffies + HZ));
1da177e4
LT		 1020 } else
1021 ch->statusflags &= ~EMPTYWAIT;
1022}
1023
6f56b658 1024static void moxa_shut_down(struct moxa_port *ch)
1da177e4
LT		 1025{
1026 struct tty_struct *tp;
1027
1028 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1029 return;
1030
1031 tp = ch->tty;
1032
1033 MoxaPortDisable(ch->port);
1034
1035 /*
1036 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1037 */
1038 if (tp->termios->c_cflag & HUPCL)
1039 MoxaPortLineCtrl(ch->port, 0, 0);
1040
1041 ch->asyncflags &= ~ASYNC_INITIALIZED;
1042}
1043
6f56b658 1044static void moxa_receive_data(struct moxa_port *ch)
1da177e4
LT		 1045{
1046 struct tty_struct *tp;
606d099c 1047 struct ktermios *ts;
1da177e4
LT		 1048 unsigned long flags;
1049
1050 ts = NULL;
1051 tp = ch->tty;
1052 if (tp)
1053 ts = tp->termios;
1054 /**************************************************
1055 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1056 *****************************************************/
1057 if (!tp || !ts) {
1058 MoxaPortFlushData(ch->port, 0);
1059 return;
1060 }
33f0f88f
AC		 1061 spin_lock_irqsave(&moxa_lock, flags);
1062 MoxaPortReadData(ch->port, tp);
1063 spin_unlock_irqrestore(&moxa_lock, flags);
1064 tty_schedule_flip(tp);
1da177e4
LT		 1065}
1066
1067#define Magic_code 0x404
1068
1069/*
1070 * System Configuration
1071 */
1072/*
1073 * for C218 BIOS initialization
1074 */
1075#define C218_ConfBase 0x800
1076#define C218_status (C218_ConfBase + 0) /* BIOS running status */
1077#define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1078#define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1079#define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1080#define C218check_sum (C218_ConfBase + 8) /* BYTE */
1081#define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1082#define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1083#define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1084#define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1085#define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1086
1087#define C218_LoadBuf 0x0F00
1088#define C218_KeyCode 0x218
1089#define CP204J_KeyCode 0x204
1090
1091/*
1092 * for C320 BIOS initialization
1093 */
1094#define C320_ConfBase 0x800
1095#define C320_LoadBuf 0x0f00
1096#define STS_init 0x05 /* for C320_status */
1097
1098#define C320_status C320_ConfBase + 0 /* BIOS running status */
1099#define C320_diag C320_ConfBase + 2 /* diagnostic status */
1100#define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1101#define C320DLoad_len C320_ConfBase + 6 /* WORD */
1102#define C320check_sum C320_ConfBase + 8 /* WORD */
1103#define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1104#define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1105#define C320UART_no C320_ConfBase + 0x0e /* WORD */
1106
1107#define C320_KeyCode 0x320
1108
1109#define FixPage_addr 0x0000 /* starting addr of static page */
1110#define DynPage_addr 0x2000 /* starting addr of dynamic page */
1111#define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1112#define Control_reg 0x1ff0 /* select page and reset control */
1113#define HW_reset 0x80
1114
1115/*
1116 * Function Codes
1117 */
1118#define FC_CardReset 0x80
1119#define FC_ChannelReset 1 /* C320 firmware not supported */
1120#define FC_EnableCH 2
1121#define FC_DisableCH 3
1122#define FC_SetParam 4
1123#define FC_SetMode 5
1124#define FC_SetRate 6
1125#define FC_LineControl 7
1126#define FC_LineStatus 8
1127#define FC_XmitControl 9
1128#define FC_FlushQueue 10
1129#define FC_SendBreak 11
1130#define FC_StopBreak 12
1131#define FC_LoopbackON 13
1132#define FC_LoopbackOFF 14
1133#define FC_ClrIrqTable 15
1134#define FC_SendXon 16
1135#define FC_SetTermIrq 17 /* C320 firmware not supported */
1136#define FC_SetCntIrq 18 /* C320 firmware not supported */
1137#define FC_SetBreakIrq 19
1138#define FC_SetLineIrq 20
1139#define FC_SetFlowCtl 21
1140#define FC_GenIrq 22
1141#define FC_InCD180 23
1142#define FC_OutCD180 24
1143#define FC_InUARTreg 23
1144#define FC_OutUARTreg 24
1145#define FC_SetXonXoff 25
1146#define FC_OutCD180CCR 26
1147#define FC_ExtIQueue 27
1148#define FC_ExtOQueue 28
1149#define FC_ClrLineIrq 29
1150#define FC_HWFlowCtl 30
1151#define FC_GetClockRate 35
1152#define FC_SetBaud 36
1153#define FC_SetDataMode 41
1154#define FC_GetCCSR 43
1155#define FC_GetDataError 45
1156#define FC_RxControl 50
1157#define FC_ImmSend 51
1158#define FC_SetXonState 52
1159#define FC_SetXoffState 53
1160#define FC_SetRxFIFOTrig 54
1161#define FC_SetTxFIFOCnt 55
1162#define FC_UnixRate 56
1163#define FC_UnixResetTimer 57
1164
1165#define RxFIFOTrig1 0
1166#define RxFIFOTrig4 1
1167#define RxFIFOTrig8 2
1168#define RxFIFOTrig14 3
1169
1170/*
1171 * Dual-Ported RAM
1172 */
1173#define DRAM_global 0
1174#define INT_data (DRAM_global + 0)
1175#define Config_base (DRAM_global + 0x108)
1176
1177#define IRQindex (INT_data + 0)
1178#define IRQpending (INT_data + 4)
1179#define IRQtable (INT_data + 8)
1180
1181/*
1182 * Interrupt Status
1183 */
1184#define IntrRx 0x01 /* receiver data O.K. */
1185#define IntrTx 0x02 /* transmit buffer empty */
1186#define IntrFunc 0x04 /* function complete */
1187#define IntrBreak 0x08 /* received break */
1188#define IntrLine 0x10 /* line status change
1189 for transmitter */
1190#define IntrIntr 0x20 /* received INTR code */
1191#define IntrQuit 0x40 /* received QUIT code */
1192#define IntrEOF 0x80 /* received EOF code */
1193
1194#define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1195#define IntrTxTrigger 0x200 /* tx data count below trigger value */
1196
1197#define Magic_no (Config_base + 0)
1198#define Card_model_no (Config_base + 2)
1199#define Total_ports (Config_base + 4)
1200#define Module_cnt (Config_base + 8)
1201#define Module_no (Config_base + 10)
1202#define Timer_10ms (Config_base + 14)
1203#define Disable_IRQ (Config_base + 20)
1204#define TMS320_PORT1 (Config_base + 22)
1205#define TMS320_PORT2 (Config_base + 24)
1206#define TMS320_CLOCK (Config_base + 26)
1207
1208/*
1209 * DATA BUFFER in DRAM
1210 */
1211#define Extern_table 0x400 /* Base address of the external table
1212 (24 words * 64) total 3K bytes
1213 (24 words * 128) total 6K bytes */
1214#define Extern_size 0x60 /* 96 bytes */
1215#define RXrptr 0x00 /* read pointer for RX buffer */
1216#define RXwptr 0x02 /* write pointer for RX buffer */
1217#define TXrptr 0x04 /* read pointer for TX buffer */
1218#define TXwptr 0x06 /* write pointer for TX buffer */
1219#define HostStat 0x08 /* IRQ flag and general flag */
1220#define FlagStat 0x0A
1221#define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1222 /* x x x x | | | | */
1223 /* | | | + CTS flow */
1224 /* | | +--- RTS flow */
1225 /* | +------ TX Xon/Xoff */
1226 /* +--------- RX Xon/Xoff */
1227#define Break_cnt 0x0E /* received break count */
1228#define CD180TXirq 0x10 /* if non-0: enable TX irq */
1229#define RX_mask 0x12
1230#define TX_mask 0x14
1231#define Ofs_rxb 0x16
1232#define Ofs_txb 0x18
1233#define Page_rxb 0x1A
1234#define Page_txb 0x1C
1235#define EndPage_rxb 0x1E
1236#define EndPage_txb 0x20
1237#define Data_error 0x22
1238#define RxTrigger 0x28
1239#define TxTrigger 0x2a
1240
1241#define rRXwptr 0x34
1242#define Low_water 0x36
1243
1244#define FuncCode 0x40
1245#define FuncArg 0x42
1246#define FuncArg1 0x44
1247
1248#define C218rx_size 0x2000 /* 8K bytes */
1249#define C218tx_size 0x8000 /* 32K bytes */
1250
1251#define C218rx_mask (C218rx_size - 1)
1252#define C218tx_mask (C218tx_size - 1)
1253
1254#define C320p8rx_size 0x2000
1255#define C320p8tx_size 0x8000
1256#define C320p8rx_mask (C320p8rx_size - 1)
1257#define C320p8tx_mask (C320p8tx_size - 1)
1258
1259#define C320p16rx_size 0x2000
1260#define C320p16tx_size 0x4000
1261#define C320p16rx_mask (C320p16rx_size - 1)
1262#define C320p16tx_mask (C320p16tx_size - 1)
1263
1264#define C320p24rx_size 0x2000
1265#define C320p24tx_size 0x2000
1266#define C320p24rx_mask (C320p24rx_size - 1)
1267#define C320p24tx_mask (C320p24tx_size - 1)
1268
1269#define C320p32rx_size 0x1000
1270#define C320p32tx_size 0x1000
1271#define C320p32rx_mask (C320p32rx_size - 1)
1272#define C320p32tx_mask (C320p32tx_size - 1)
1273
1274#define Page_size 0x2000
1275#define Page_mask (Page_size - 1)
1276#define C218rx_spage 3
1277#define C218tx_spage 4
1278#define C218rx_pageno 1
1279#define C218tx_pageno 4
1280#define C218buf_pageno 5
1281
1282#define C320p8rx_spage 3
1283#define C320p8tx_spage 4
1284#define C320p8rx_pgno 1
1285#define C320p8tx_pgno 4
1286#define C320p8buf_pgno 5
1287
1288#define C320p16rx_spage 3
1289#define C320p16tx_spage 4
1290#define C320p16rx_pgno 1
1291#define C320p16tx_pgno 2
1292#define C320p16buf_pgno 3
1293
1294#define C320p24rx_spage 3
1295#define C320p24tx_spage 4
1296#define C320p24rx_pgno 1
1297#define C320p24tx_pgno 1
1298#define C320p24buf_pgno 2
1299
1300#define C320p32rx_spage 3
1301#define C320p32tx_ofs C320p32rx_size
1302#define C320p32tx_spage 3
1303#define C320p32buf_pgno 1
1304
1305/*
1306 * Host Status
1307 */
1308#define WakeupRx 0x01
1309#define WakeupTx 0x02
1310#define WakeupBreak 0x08
1311#define WakeupLine 0x10
1312#define WakeupIntr 0x20
1313#define WakeupQuit 0x40
1314#define WakeupEOF 0x80 /* used in VTIME control */
1315#define WakeupRxTrigger 0x100
1316#define WakeupTxTrigger 0x200
1317/*
1318 * Flag status
1319 */
1320#define Rx_over 0x01
1321#define Xoff_state 0x02
1322#define Tx_flowOff 0x04
1323#define Tx_enable 0x08
1324#define CTS_state 0x10
1325#define DSR_state 0x20
1326#define DCD_state 0x80
1327/*
1328 * FlowControl
1329 */
1330#define CTS_FlowCtl 1
1331#define RTS_FlowCtl 2
1332#define Tx_FlowCtl 4
1333#define Rx_FlowCtl 8
1334#define IXM_IXANY 0x10
1335
1336#define LowWater 128
1337
1338#define DTR_ON 1
1339#define RTS_ON 2
1340#define CTS_ON 1
1341#define DSR_ON 2
1342#define DCD_ON 8
1343
1344/* mode definition */
1345#define MX_CS8 0x03
1346#define MX_CS7 0x02
1347#define MX_CS6 0x01
1348#define MX_CS5 0x00
1349
1350#define MX_STOP1 0x00
1351#define MX_STOP15 0x04
1352#define MX_STOP2 0x08
1353
1354#define MX_PARNONE 0x00
1355#define MX_PAREVEN 0x40
1356#define MX_PARODD 0xC0
1357
1358/*
1359 * Query
1360 */
1da177e4
LT		 1361
1362struct mon_str {
1363 int tick;
1364 int rxcnt[MAX_PORTS];
1365 int txcnt[MAX_PORTS];
1366};
1da177e4
LT		 1367
1368#define DCD_changed 0x01
1369#define DCD_oldstate 0x80
1370
1371static unsigned char moxaBuff[10240];
1da177e4
LT		 1372static int moxaLowWaterChk;
1373static int moxaCard;
9dff89cd 1374static struct mon_str moxaLog;
9fa372a8 1375static int moxaFuncTout = HZ / 2;
1da177e4 1376
1da177e4 1377static void moxafunc(void __iomem *, int, ushort);
6f56b658
JS		 1378static void moxa_wait_finish(void __iomem *);
1379static void moxa_low_water_check(void __iomem *);
1da177e4
LT		 1380static int moxaloadbios(int, unsigned char __user *, int);
1381static int moxafindcard(int);
1382static int moxaload320b(int, unsigned char __user *, int);
1383static int moxaloadcode(int, unsigned char __user *, int);
1384static int moxaloadc218(int, void __iomem *, int);
1385static int moxaloadc320(int, void __iomem *, int, int *);
1386
1387/*****************************************************************************
1388 * Driver level functions: *
1389 * 1. MoxaDriverInit(void); *
1390 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1391 * 3. MoxaDriverPoll(void); *
1392 *****************************************************************************/
1393void MoxaDriverInit(void)
1394{
8f8ecbad
JS		 1395 struct moxa_port *p;
1396 unsigned int i;
1da177e4
LT		 1397
1398 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1399 moxaCard = 0;
1400 moxaLog.tick = 0;
1401 moxaLowWaterChk = 0;
1402 for (i = 0; i < MAX_PORTS; i++) {
8f8ecbad
JS		 1403 p = &moxa_ports[i];
1404 p->chkPort = 0;
1405 p->lowChkFlag = 0;
1406 p->lineCtrl = 0;
1da177e4
LT		 1407 moxaLog.rxcnt[i] = 0;
1408 moxaLog.txcnt[i] = 0;
1409 }
1410}
1411
1412#define MOXA 0x400
1413#define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1414#define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1415#define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1416#define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1417#define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1418#define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1419#define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1420#define MOXA_GETDATACOUNT (MOXA + 23)
1421#define MOXA_GET_IOQUEUE (MOXA + 27)
1422#define MOXA_FLUSH_QUEUE (MOXA + 28)
1423#define MOXA_GET_CONF (MOXA + 35) /* configuration */
1424#define MOXA_GET_MAJOR (MOXA + 63)
1425#define MOXA_GET_CUMAJOR (MOXA + 64)
1426#define MOXA_GETMSTATUS (MOXA + 65)
1427
1da177e4
LT		 1428struct dl_str {
1429 char __user *buf;
1430 int len;
1431 int cardno;
1432};
1433
1da177e4
LT		 1434static struct dl_str dltmp;
1435
1436void MoxaPortFlushData(int port, int mode)
1437{
1438 void __iomem *ofsAddr;
1439 if ((mode < 0) || (mode > 2))
1440 return;
8f8ecbad 1441 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 1442 moxafunc(ofsAddr, FC_FlushQueue, mode);
1443 if (mode != 1) {
8f8ecbad 1444 moxa_ports[port].lowChkFlag = 0;
6f56b658 1445 moxa_low_water_check(ofsAddr);
1da177e4
LT		 1446 }
1447}
1448
1449int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1450{
1451 int i;
1452 int status;
1453 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1454 void __user *argp = (void __user *)arg;
1455
11324edd 1456 if (port == MAX_PORTS) {
1da177e4
LT		 1457 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1458 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1459 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1460 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1461 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1462 return (-EINVAL);
1463 }
1464 switch (cmd) {
1465 case MOXA_GET_CONF:
9dff89cd
JS		 1466 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS *
1467 sizeof(struct moxa_board_conf)))
1da177e4
LT		 1468 return -EFAULT;
1469 return (0);
1470 case MOXA_INIT_DRIVER:
1471 if ((int) arg == 0x404)
1472 MoxaDriverInit();
1473 return (0);
1474 case MOXA_GETDATACOUNT:
1475 moxaLog.tick = jiffies;
9dff89cd 1476 if(copy_to_user(argp, &moxaLog, sizeof(struct mon_str)))
1da177e4
LT		 1477 return -EFAULT;
1478 return (0);
1479 case MOXA_FLUSH_QUEUE:
1480 MoxaPortFlushData(port, arg);
1481 return (0);
8f8ecbad
JS		 1482 case MOXA_GET_IOQUEUE: {
1483 struct moxaq_str __user *argm = argp;
181d6f4f 1484 struct moxaq_str tmp;
8f8ecbad
JS		 1485
1486 for (i = 0; i < MAX_PORTS; i++, argm++) {
181d6f4f
JS		 1487 memset(&tmp, 0, sizeof(tmp));
1488 if (moxa_ports[i].chkPort) {
1489 tmp.inq = MoxaPortRxQueue(i);
1490 tmp.outq = MoxaPortTxQueue(i);
1da177e4 1491 }
181d6f4f 1492 if (copy_to_user(argm, &tmp, sizeof(tmp)))
8f8ecbad 1493 return -EFAULT;
1da177e4 1494 }
1da177e4 1495 return (0);
8f8ecbad 1496 } case MOXA_GET_OQUEUE:
1da177e4
LT		 1497 i = MoxaPortTxQueue(port);
1498 return put_user(i, (unsigned long __user *)argp);
1499 case MOXA_GET_IQUEUE:
1500 i = MoxaPortRxQueue(port);
1501 return put_user(i, (unsigned long __user *)argp);
1502 case MOXA_GET_MAJOR:
1503 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1504 return -EFAULT;
1505 return 0;
1506 case MOXA_GET_CUMAJOR:
1507 i = 0;
1508 if(copy_to_user(argp, &i, sizeof(int)))
1509 return -EFAULT;
1510 return 0;
8f8ecbad
JS		 1511 case MOXA_GETMSTATUS: {
1512 struct mxser_mstatus __user *argm = argp;
181d6f4f 1513 struct mxser_mstatus tmp;
8f8ecbad
JS		 1514 struct moxa_port *p;
1515
1516 for (i = 0; i < MAX_PORTS; i++, argm++) {
1517 p = &moxa_ports[i];
181d6f4f 1518 memset(&tmp, 0, sizeof(tmp));
8f8ecbad
JS		 1519 if (!p->chkPort) {
1520 goto copy;
1da177e4 1521 } else {
8f8ecbad 1522 status = MoxaPortLineStatus(p->port);
1da177e4 1523 if (status & 1)
181d6f4f 1524 tmp.cts = 1;
1da177e4 1525 if (status & 2)
181d6f4f 1526 tmp.dsr = 1;
1da177e4 1527 if (status & 4)
181d6f4f 1528 tmp.dcd = 1;
1da177e4
LT		 1529 }
1530
8f8ecbad 1531 if (!p->tty || !p->tty->termios)
181d6f4f 1532 tmp.cflag = p->cflag;
1da177e4 1533 else
181d6f4f 1534 tmp.cflag = p->tty->termios->c_cflag;
8f8ecbad 1535copy:
181d6f4f 1536 if (copy_to_user(argm, &tmp, sizeof(tmp)))
8f8ecbad 1537 return -EFAULT;
1da177e4 1538 }
1da177e4 1539 return 0;
8f8ecbad 1540 } default:
1da177e4
LT		 1541 return (-ENOIOCTLCMD);
1542 case MOXA_LOAD_BIOS:
1543 case MOXA_FIND_BOARD:
1544 case MOXA_LOAD_C320B:
1545 case MOXA_LOAD_CODE:
49cd619c
AC		 1546 if (!capable(CAP_SYS_RAWIO))
1547 return -EPERM;
1da177e4
LT		 1548 break;
1549 }
1550
1551 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1552 return -EFAULT;
a2f72982 1553 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS || dltmp.len < 0)
1da177e4
LT		 1554 return -EINVAL;
1555
1556 switch(cmd)
1557 {
1558 case MOXA_LOAD_BIOS:
1559 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1560 return (i);
1561 case MOXA_FIND_BOARD:
1562 return moxafindcard(dltmp.cardno);
1563 case MOXA_LOAD_C320B:
1564 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1565 default: /* to keep gcc happy */
1566 return (0);
1567 case MOXA_LOAD_CODE:
1568 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1569 if (i == -1)
1570 return (-EFAULT);
1571 return (i);
1572
1573 }
1574}
1575
1576int MoxaDriverPoll(void)
1577{
8f8ecbad 1578 struct moxa_board_conf *brd;
1da177e4
LT		 1579 register ushort temp;
1580 register int card;
1581 void __iomem *ofsAddr;
1582 void __iomem *ip;
1583 int port, p, ports;
1584
1585 if (moxaCard == 0)
1586 return (-1);
1587 for (card = 0; card < MAX_BOARDS; card++) {
8f8ecbad
JS		 1588 brd = &moxa_boards[card];
1589 if (brd->loadstat == 0)
01cfaf0d 1590 continue;
8f8ecbad 1591 if ((ports = brd->numPorts) == 0)
1da177e4 1592 continue;
8f8ecbad
JS		 1593 if (readb(brd->intPend) == 0xff) {
1594 ip = brd->intTable + readb(brd->intNdx);
1da177e4
LT		 1595 p = card * MAX_PORTS_PER_BOARD;
1596 ports <<= 1;
1597 for (port = 0; port < ports; port += 2, p++) {
1598 if ((temp = readw(ip + port)) != 0) {
1599 writew(0, ip + port);
8f8ecbad 1600 ofsAddr = moxa_ports[p].tableAddr;
1da177e4
LT		 1601 if (temp & IntrTx)
1602 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1603 if (temp & IntrBreak) {
8f8ecbad 1604 moxa_ports[p].breakCnt++;
1da177e4
LT		 1605 }
1606 if (temp & IntrLine) {
1607 if (readb(ofsAddr + FlagStat) & DCD_state) {
8f8ecbad
JS		 1608 if ((moxa_ports[p].DCDState & DCD_oldstate) == 0)
1609 moxa_ports[p].DCDState = (DCD_oldstate |
1da177e4
LT		 1610 DCD_changed);
1611 } else {
8f8ecbad
JS		 1612 if (moxa_ports[p].DCDState & DCD_oldstate)
1613 moxa_ports[p].DCDState = DCD_changed;
1da177e4
LT		 1614 }
1615 }
1616 }
1617 }
8f8ecbad 1618 writeb(0, brd->intPend);
1da177e4
LT		 1619 }
1620 if (moxaLowWaterChk) {
1621 p = card * MAX_PORTS_PER_BOARD;
1622 for (port = 0; port < ports; port++, p++) {
8f8ecbad
JS		 1623 if (moxa_ports[p].lowChkFlag) {
1624 moxa_ports[p].lowChkFlag = 0;
1625 ofsAddr = moxa_ports[p].tableAddr;
6f56b658 1626 moxa_low_water_check(ofsAddr);
1da177e4
LT		 1627 }
1628 }
1629 }
1630 }
1631 moxaLowWaterChk = 0;
1632 return (0);
1633}
1634
1635/*****************************************************************************
1636 * Card level function: *
1637 * 1. MoxaPortsOfCard(int cardno); *
1638 *****************************************************************************/
1639int MoxaPortsOfCard(int cardno)
1640{
1641
1642 if (moxa_boards[cardno].boardType == 0)
1643 return (0);
1644 return (moxa_boards[cardno].numPorts);
1645}
1646
1647/*****************************************************************************
1648 * Port level functions: *
1649 * 1. MoxaPortIsValid(int port); *
1650 * 2. MoxaPortEnable(int port); *
1651 * 3. MoxaPortDisable(int port); *
1652 * 4. MoxaPortGetMaxBaud(int port); *
1da177e4 1653 * 6. MoxaPortSetBaud(int port, long baud); *
1da177e4
LT		 1654 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1655 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1656 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1657 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1658 * 12. MoxaPortLineStatus(int port); *
1659 * 13. MoxaPortDCDChange(int port); *
1660 * 14. MoxaPortDCDON(int port); *
1661 * 15. MoxaPortFlushData(int port, int mode); *
1662 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
33f0f88f 1663 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1da177e4
LT		 1664 * 20. MoxaPortTxQueue(int port); *
1665 * 21. MoxaPortTxFree(int port); *
1666 * 22. MoxaPortRxQueue(int port); *
1da177e4
LT		 1667 * 24. MoxaPortTxDisable(int port); *
1668 * 25. MoxaPortTxEnable(int port); *
1da177e4 1669 * 27. MoxaPortResetBrkCnt(int port); *
1da177e4
LT		 1670 * 30. MoxaPortSendBreak(int port, int ticks); *
1671 *****************************************************************************/
1672/*
1673 * Moxa Port Number Description:
1674 *
1675 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1676 * the port number using in MOXA driver functions will be 0 to 31 for
1677 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1678 * to 127 for fourth. For example, if you setup three MOXA boards,
1679 * first board is C218, second board is C320-16 and third board is
1680 * C320-32. The port number of first board (C218 - 8 ports) is from
1681 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1682 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1683 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1684 * 127 will be invalid.
1685 *
1686 *
1687 * Moxa Functions Description:
1688 *
1689 * Function 1: Driver initialization routine, this routine must be
1690 * called when initialized driver.
1691 * Syntax:
1692 * void MoxaDriverInit();
1693 *
1694 *
1695 * Function 2: Moxa driver private IOCTL command processing.
1696 * Syntax:
1697 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1698 *
1699 * unsigned int cmd : IOCTL command
1700 * unsigned long arg : IOCTL argument
1701 * int port : port number (0 - 127)
1702 *
1703 * return: 0 (OK)
1704 * -EINVAL
1705 * -ENOIOCTLCMD
1706 *
1707 *
1708 * Function 3: Moxa driver polling process routine.
1709 * Syntax:
1710 * int MoxaDriverPoll(void);
1711 *
1712 * return: 0 ; polling O.K.
1713 * -1 : no any Moxa card.
1714 *
1715 *
1716 * Function 4: Get the ports of this card.
1717 * Syntax:
1718 * int MoxaPortsOfCard(int cardno);
1719 *
1720 * int cardno : card number (0 - 3)
1721 *
1722 * return: 0 : this card is invalid
1723 * 8/16/24/32
1724 *
1725 *
1726 * Function 5: Check this port is valid or invalid
1727 * Syntax:
1728 * int MoxaPortIsValid(int port);
1729 * int port : port number (0 - 127, ref port description)
1730 *
1731 * return: 0 : this port is invalid
1732 * 1 : this port is valid
1733 *
1734 *
1735 * Function 6: Enable this port to start Tx/Rx data.
1736 * Syntax:
1737 * void MoxaPortEnable(int port);
1738 * int port : port number (0 - 127)
1739 *
1740 *
1741 * Function 7: Disable this port
1742 * Syntax:
1743 * void MoxaPortDisable(int port);
1744 * int port : port number (0 - 127)
1745 *
1746 *
1747 * Function 8: Get the maximun available baud rate of this port.
1748 * Syntax:
1749 * long MoxaPortGetMaxBaud(int port);
1750 * int port : port number (0 - 127)
1751 *
1752 * return: 0 : this port is invalid
1753 * 38400/57600/115200 bps
1754 *
1755 *
1da177e4
LT		 1756 * Function 10: Setting baud rate of this port.
1757 * Syntax:
1758 * long MoxaPortSetBaud(int port, long baud);
1759 * int port : port number (0 - 127)
1760 * long baud : baud rate (50 - 115200)
1761 *
1762 * return: 0 : this port is invalid or baud < 50
1763 * 50 - 115200 : the real baud rate set to the port, if
1764 * the argument baud is large than maximun
1765 * available baud rate, the real setting
1766 * baud rate will be the maximun baud rate.
1767 *
1768 *
1da177e4
LT		 1769 * Function 12: Configure the port.
1770 * Syntax:
606d099c 1771 * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud);
1da177e4 1772 * int port : port number (0 - 127)
606d099c 1773 * struct ktermios * termio : termio structure pointer
c7bce309 1774 * speed_t baud : baud rate
1da177e4
LT		 1775 *
1776 * return: -1 : this port is invalid or termio == NULL
1777 * 0 : setting O.K.
1778 *
1779 *
1780 * Function 13: Get the DTR/RTS state of this port.
1781 * Syntax:
1782 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1783 * int port : port number (0 - 127)
1784 * int * dtrState : pointer to INT to receive the current DTR
1785 * state. (if NULL, this function will not
1786 * write to this address)
1787 * int * rtsState : pointer to INT to receive the current RTS
1788 * state. (if NULL, this function will not
1789 * write to this address)
1790 *
1791 * return: -1 : this port is invalid
1792 * 0 : O.K.
1793 *
1794 *
1795 * Function 14: Setting the DTR/RTS output state of this port.
1796 * Syntax:
1797 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1798 * int port : port number (0 - 127)
1799 * int dtrState : DTR output state (0: off, 1: on)
1800 * int rtsState : RTS output state (0: off, 1: on)
1801 *
1802 *
1803 * Function 15: Setting the flow control of this port.
1804 * Syntax:
1805 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1806 * int txFlow,int xany);
1807 * int port : port number (0 - 127)
1808 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1809 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1810 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1811 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1812 * int xany : S/W XANY flow control (0: no, 1: yes)
1813 *
1814 *
1815 * Function 16: Get ths line status of this port
1816 * Syntax:
1817 * int MoxaPortLineStatus(int port);
1818 * int port : port number (0 - 127)
1819 *
1820 * return: Bit 0 - CTS state (0: off, 1: on)
1821 * Bit 1 - DSR state (0: off, 1: on)
1822 * Bit 2 - DCD state (0: off, 1: on)
1823 *
1824 *
1825 * Function 17: Check the DCD state has changed since the last read
1826 * of this function.
1827 * Syntax:
1828 * int MoxaPortDCDChange(int port);
1829 * int port : port number (0 - 127)
1830 *
1831 * return: 0 : no changed
1832 * 1 : DCD has changed
1833 *
1834 *
1835 * Function 18: Check ths current DCD state is ON or not.
1836 * Syntax:
1837 * int MoxaPortDCDON(int port);
1838 * int port : port number (0 - 127)
1839 *
1840 * return: 0 : DCD off
1841 * 1 : DCD on
1842 *
1843 *
1844 * Function 19: Flush the Rx/Tx buffer data of this port.
1845 * Syntax:
1846 * void MoxaPortFlushData(int port, int mode);
1847 * int port : port number (0 - 127)
1848 * int mode
1849 * 0 : flush the Rx buffer
1850 * 1 : flush the Tx buffer
1851 * 2 : flush the Rx and Tx buffer
1852 *
1853 *
1854 * Function 20: Write data.
1855 * Syntax:
1856 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
1857 * int port : port number (0 - 127)
1858 * unsigned char * buffer : pointer to write data buffer.
1859 * int length : write data length
1860 *
1861 * return: 0 - length : real write data length
1862 *
1863 *
1864 * Function 21: Read data.
1865 * Syntax:
33f0f88f 1866 * int MoxaPortReadData(int port, struct tty_struct *tty);
1da177e4 1867 * int port : port number (0 - 127)
33f0f88f 1868 * struct tty_struct *tty : tty for data
1da177e4
LT		 1869 *
1870 * return: 0 - length : real read data length
1871 *
1872 *
1da177e4
LT		 1873 * Function 24: Get the Tx buffer current queued data bytes
1874 * Syntax:
1875 * int MoxaPortTxQueue(int port);
1876 * int port : port number (0 - 127)
1877 *
1878 * return: .. : Tx buffer current queued data bytes
1879 *
1880 *
1881 * Function 25: Get the Tx buffer current free space
1882 * Syntax:
1883 * int MoxaPortTxFree(int port);
1884 * int port : port number (0 - 127)
1885 *
1886 * return: .. : Tx buffer current free space
1887 *
1888 *
1889 * Function 26: Get the Rx buffer current queued data bytes
1890 * Syntax:
1891 * int MoxaPortRxQueue(int port);
1892 * int port : port number (0 - 127)
1893 *
1894 * return: .. : Rx buffer current queued data bytes
1895 *
1896 *
1da177e4
LT		 1897 * Function 28: Disable port data transmission.
1898 * Syntax:
1899 * void MoxaPortTxDisable(int port);
1900 * int port : port number (0 - 127)
1901 *
1902 *
1903 * Function 29: Enable port data transmission.
1904 * Syntax:
1905 * void MoxaPortTxEnable(int port);
1906 * int port : port number (0 - 127)
1907 *
1908 *
1da177e4
LT		 1909 * Function 31: Get the received BREAK signal count and reset it.
1910 * Syntax:
1911 * int MoxaPortResetBrkCnt(int port);
1912 * int port : port number (0 - 127)
1913 *
1914 * return: 0 - .. : BREAK signal count
1915 *
1916 *
1da177e4
LT		 1917 * Function 34: Send out a BREAK signal.
1918 * Syntax:
1919 * void MoxaPortSendBreak(int port, int ms100);
1920 * int port : port number (0 - 127)
1921 * int ms100 : break signal time interval.
1922 * unit: 100 mini-second. if ms100 == 0, it will
1923 * send out a about 250 ms BREAK signal.
1924 *
1925 */
1926int MoxaPortIsValid(int port)
1927{
1928
1929 if (moxaCard == 0)
1930 return (0);
8f8ecbad 1931 if (moxa_ports[port].chkPort == 0)
1da177e4
LT		 1932 return (0);
1933 return (1);
1934}
1935
1936void MoxaPortEnable(int port)
1937{
1938 void __iomem *ofsAddr;
1939 int MoxaPortLineStatus(int);
1940 short lowwater = 512;
1941
8f8ecbad 1942 ofsAddr = moxa_ports[port].tableAddr;
1da177e4 1943 writew(lowwater, ofsAddr + Low_water);
8f8ecbad 1944 moxa_ports[port].breakCnt = 0;
1da177e4
LT		 1945 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
1946 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
1947 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
1948 } else {
1949 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
1950 }
1951
1952 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
1953 moxafunc(ofsAddr, FC_FlushQueue, 2);
1954
1955 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
1956 MoxaPortLineStatus(port);
1957}
1958
1959void MoxaPortDisable(int port)
1960{
8f8ecbad 1961 void __iomem *ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 1962
1963 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
1964 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
1965 writew(0, ofsAddr + HostStat);
1966 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
1967}
1968
1969long MoxaPortGetMaxBaud(int port)
1970{
1971 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
1972 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
1973 return (460800L);
1974 else
1975 return (921600L);
1976}
1977
1978
1979long MoxaPortSetBaud(int port, long baud)
1980{
1981 void __iomem *ofsAddr;
1982 long max, clock;
1983 unsigned int val;
1984
1985 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
1986 return (0);
8f8ecbad 1987 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 1988 if (baud > max)
1989 baud = max;
1990 if (max == 38400L)
1991 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
1992 else if (max == 57600L)
1993 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
1994 else
1995 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
1996 val = clock / baud;
1997 moxafunc(ofsAddr, FC_SetBaud, val);
1998 baud = clock / val;
8f8ecbad 1999 moxa_ports[port].curBaud = baud;
1da177e4
LT		 2000 return (baud);
2001}
2002
606d099c 2003int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud)
1da177e4
LT		 2004{
2005 void __iomem *ofsAddr;
2006 tcflag_t cflag;
1da177e4
LT		 2007 tcflag_t mode = 0;
2008
8f8ecbad 2009 if (moxa_ports[port].chkPort == 0 || termio == 0)
1da177e4 2010 return (-1);
8f8ecbad 2011 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2012 cflag = termio->c_cflag; /* termio->c_cflag */
2013
2014 mode = termio->c_cflag & CSIZE;
2015 if (mode == CS5)
2016 mode = MX_CS5;
2017 else if (mode == CS6)
2018 mode = MX_CS6;
2019 else if (mode == CS7)
2020 mode = MX_CS7;
2021 else if (mode == CS8)
2022 mode = MX_CS8;
2023
2024 if (termio->c_cflag & CSTOPB) {
2025 if (mode == MX_CS5)
2026 mode |= MX_STOP15;
2027 else
2028 mode |= MX_STOP2;
2029 } else
2030 mode |= MX_STOP1;
2031
2032 if (termio->c_cflag & PARENB) {
2033 if (termio->c_cflag & PARODD)
2034 mode |= MX_PARODD;
2035 else
2036 mode |= MX_PAREVEN;
2037 } else
2038 mode |= MX_PARNONE;
2039
2040 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2041
1da177e4
LT		 2042 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2043 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
c7bce309 2044 if (baud >= 921600L)
1da177e4
LT		 2045 return (-1);
2046 }
db1acaa6 2047 baud = MoxaPortSetBaud(port, baud);
1da177e4
LT		 2048
2049 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2050 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2051 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2052 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
6f56b658 2053 moxa_wait_finish(ofsAddr);
1da177e4
LT		 2054
2055 }
db1acaa6 2056 return (baud);
1da177e4
LT		 2057}
2058
2059int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2060{
2061
2062 if (!MoxaPortIsValid(port))
2063 return (-1);
2064 if (dtrState) {
8f8ecbad 2065 if (moxa_ports[port].lineCtrl & DTR_ON)
1da177e4
LT		 2066 *dtrState = 1;
2067 else
2068 *dtrState = 0;
2069 }
2070 if (rtsState) {
8f8ecbad 2071 if (moxa_ports[port].lineCtrl & RTS_ON)
1da177e4
LT		 2072 *rtsState = 1;
2073 else
2074 *rtsState = 0;
2075 }
2076 return (0);
2077}
2078
2079void MoxaPortLineCtrl(int port, int dtr, int rts)
2080{
2081 void __iomem *ofsAddr;
2082 int mode;
2083
8f8ecbad 2084 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2085 mode = 0;
2086 if (dtr)
2087 mode |= DTR_ON;
2088 if (rts)
2089 mode |= RTS_ON;
8f8ecbad 2090 moxa_ports[port].lineCtrl = mode;
1da177e4
LT		 2091 moxafunc(ofsAddr, FC_LineControl, mode);
2092}
2093
2094void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2095{
2096 void __iomem *ofsAddr;
2097 int mode;
2098
8f8ecbad 2099 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2100 mode = 0;
2101 if (rts)
2102 mode |= RTS_FlowCtl;
2103 if (cts)
2104 mode |= CTS_FlowCtl;
2105 if (txflow)
2106 mode |= Tx_FlowCtl;
2107 if (rxflow)
2108 mode |= Rx_FlowCtl;
2109 if (txany)
2110 mode |= IXM_IXANY;
2111 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2112}
2113
2114int MoxaPortLineStatus(int port)
2115{
2116 void __iomem *ofsAddr;
2117 int val;
2118
8f8ecbad 2119 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2120 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2121 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2122 moxafunc(ofsAddr, FC_LineStatus, 0);
2123 val = readw(ofsAddr + FuncArg);
2124 } else {
2125 val = readw(ofsAddr + FlagStat) >> 4;
2126 }
2127 val &= 0x0B;
2128 if (val & 8) {
2129 val |= 4;
8f8ecbad
JS		 2130 if ((moxa_ports[port].DCDState & DCD_oldstate) == 0)
2131 moxa_ports[port].DCDState = (DCD_oldstate | DCD_changed);
1da177e4 2132 } else {
8f8ecbad
JS		 2133 if (moxa_ports[port].DCDState & DCD_oldstate)
2134 moxa_ports[port].DCDState = DCD_changed;
1da177e4
LT		 2135 }
2136 val &= 7;
2137 return (val);
2138}
2139
2140int MoxaPortDCDChange(int port)
2141{
2142 int n;
2143
8f8ecbad 2144 if (moxa_ports[port].chkPort == 0)
1da177e4 2145 return (0);
8f8ecbad
JS		 2146 n = moxa_ports[port].DCDState;
2147 moxa_ports[port].DCDState &= ~DCD_changed;
1da177e4
LT		 2148 n &= DCD_changed;
2149 return (n);
2150}
2151
2152int MoxaPortDCDON(int port)
2153{
2154 int n;
2155
8f8ecbad 2156 if (moxa_ports[port].chkPort == 0)
1da177e4 2157 return (0);
8f8ecbad 2158 if (moxa_ports[port].DCDState & DCD_oldstate)
1da177e4
LT		 2159 n = 1;
2160 else
2161 n = 0;
2162 return (n);
2163}
2164
1da177e4
LT		 2165int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2166{
2167 int c, total, i;
2168 ushort tail;
2169 int cnt;
2170 ushort head, tx_mask, spage, epage;
2171 ushort pageno, pageofs, bufhead;
2172 void __iomem *baseAddr, *ofsAddr, *ofs;
2173
8f8ecbad
JS		 2174 ofsAddr = moxa_ports[port].tableAddr;
2175 baseAddr = moxa_boards[port / MAX_PORTS_PER_BOARD].basemem;
1da177e4
LT		 2176 tx_mask = readw(ofsAddr + TX_mask);
2177 spage = readw(ofsAddr + Page_txb);
2178 epage = readw(ofsAddr + EndPage_txb);
2179 tail = readw(ofsAddr + TXwptr);
2180 head = readw(ofsAddr + TXrptr);
2181 c = (head > tail) ? (head - tail - 1)
2182 : (head - tail + tx_mask);
2183 if (c > len)
2184 c = len;
2185 moxaLog.txcnt[port] += c;
2186 total = c;
2187 if (spage == epage) {
2188 bufhead = readw(ofsAddr + Ofs_txb);
2189 writew(spage, baseAddr + Control_reg);
2190 while (c > 0) {
2191 if (head > tail)
2192 len = head - tail - 1;
2193 else
2194 len = tx_mask + 1 - tail;
2195 len = (c > len) ? len : c;
2196 ofs = baseAddr + DynPage_addr + bufhead + tail;
2197 for (i = 0; i < len; i++)
2198 writeb(*buffer++, ofs + i);
2199 tail = (tail + len) & tx_mask;
2200 c -= len;
2201 }
2202 writew(tail, ofsAddr + TXwptr);
2203 } else {
2204 len = c;
2205 pageno = spage + (tail >> 13);
2206 pageofs = tail & Page_mask;
2207 do {
2208 cnt = Page_size - pageofs;
2209 if (cnt > c)
2210 cnt = c;
2211 c -= cnt;
2212 writeb(pageno, baseAddr + Control_reg);
2213 ofs = baseAddr + DynPage_addr + pageofs;
2214 for (i = 0; i < cnt; i++)
2215 writeb(*buffer++, ofs + i);
2216 if (c == 0) {
2217 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2218 break;
2219 }
2220 if (++pageno == epage)
2221 pageno = spage;
2222 pageofs = 0;
2223 } while (1);
2224 }
2225 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2226 return (total);
2227}
2228
33f0f88f 2229int MoxaPortReadData(int port, struct tty_struct *tty)
1da177e4
LT		 2230{
2231 register ushort head, pageofs;
2232 int i, count, cnt, len, total, remain;
2233 ushort tail, rx_mask, spage, epage;
2234 ushort pageno, bufhead;
2235 void __iomem *baseAddr, *ofsAddr, *ofs;
2236
8f8ecbad
JS		 2237 ofsAddr = moxa_ports[port].tableAddr;
2238 baseAddr = moxa_boards[port / MAX_PORTS_PER_BOARD].basemem;
1da177e4
LT		 2239 head = readw(ofsAddr + RXrptr);
2240 tail = readw(ofsAddr + RXwptr);
2241 rx_mask = readw(ofsAddr + RX_mask);
2242 spage = readw(ofsAddr + Page_rxb);
2243 epage = readw(ofsAddr + EndPage_rxb);
2244 count = (tail >= head) ? (tail - head)
2245 : (tail - head + rx_mask + 1);
2246 if (count == 0)
33f0f88f 2247 return 0;
1da177e4 2248
33f0f88f 2249 total = count;
1da177e4
LT		 2250 remain = count - total;
2251 moxaLog.rxcnt[port] += total;
2252 count = total;
2253 if (spage == epage) {
2254 bufhead = readw(ofsAddr + Ofs_rxb);
2255 writew(spage, baseAddr + Control_reg);
2256 while (count > 0) {
2257 if (tail >= head)
2258 len = tail - head;
2259 else
2260 len = rx_mask + 1 - head;
2261 len = (count > len) ? len : count;
2262 ofs = baseAddr + DynPage_addr + bufhead + head;
2263 for (i = 0; i < len; i++)
33f0f88f 2264 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
1da177e4
LT		 2265 head = (head + len) & rx_mask;
2266 count -= len;
2267 }
2268 writew(head, ofsAddr + RXrptr);
2269 } else {
2270 len = count;
2271 pageno = spage + (head >> 13);
2272 pageofs = head & Page_mask;
2273 do {
2274 cnt = Page_size - pageofs;
2275 if (cnt > count)
2276 cnt = count;
2277 count -= cnt;
2278 writew(pageno, baseAddr + Control_reg);
2279 ofs = baseAddr + DynPage_addr + pageofs;
2280 for (i = 0; i < cnt; i++)
33f0f88f 2281 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
1da177e4
LT		 2282 if (count == 0) {
2283 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2284 break;
2285 }
2286 if (++pageno == epage)
2287 pageno = spage;
2288 pageofs = 0;
2289 } while (1);
2290 }
2291 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2292 moxaLowWaterChk = 1;
8f8ecbad 2293 moxa_ports[port].lowChkFlag = 1;
1da177e4
LT		 2294 }
2295 return (total);
2296}
2297
2298
2299int MoxaPortTxQueue(int port)
2300{
2301 void __iomem *ofsAddr;
2302 ushort rptr, wptr, mask;
2303 int len;
2304
8f8ecbad 2305 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2306 rptr = readw(ofsAddr + TXrptr);
2307 wptr = readw(ofsAddr + TXwptr);
2308 mask = readw(ofsAddr + TX_mask);
2309 len = (wptr - rptr) & mask;
2310 return (len);
2311}
2312
2313int MoxaPortTxFree(int port)
2314{
2315 void __iomem *ofsAddr;
2316 ushort rptr, wptr, mask;
2317 int len;
2318
8f8ecbad 2319 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2320 rptr = readw(ofsAddr + TXrptr);
2321 wptr = readw(ofsAddr + TXwptr);
2322 mask = readw(ofsAddr + TX_mask);
2323 len = mask - ((wptr - rptr) & mask);
2324 return (len);
2325}
2326
2327int MoxaPortRxQueue(int port)
2328{
2329 void __iomem *ofsAddr;
2330 ushort rptr, wptr, mask;
2331 int len;
2332
8f8ecbad 2333 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2334 rptr = readw(ofsAddr + RXrptr);
2335 wptr = readw(ofsAddr + RXwptr);
2336 mask = readw(ofsAddr + RX_mask);
2337 len = (wptr - rptr) & mask;
2338 return (len);
2339}
2340
2341
2342void MoxaPortTxDisable(int port)
2343{
2344 void __iomem *ofsAddr;
2345
8f8ecbad 2346 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2347 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2348}
2349
2350void MoxaPortTxEnable(int port)
2351{
2352 void __iomem *ofsAddr;
2353
8f8ecbad 2354 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2355 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2356}
2357
2358
2359int MoxaPortResetBrkCnt(int port)
2360{
2361 ushort cnt;
8f8ecbad
JS		 2362 cnt = moxa_ports[port].breakCnt;
2363 moxa_ports[port].breakCnt = 0;
1da177e4
LT		 2364 return (cnt);
2365}
2366
2367
2368void MoxaPortSendBreak(int port, int ms100)
2369{
2370 void __iomem *ofsAddr;
2371
8f8ecbad 2372 ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2373 if (ms100) {
2374 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
24c032f1 2375 msleep(ms100 * 10);
1da177e4
LT		 2376 } else {
2377 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
24c032f1 2378 msleep(250);
1da177e4
LT		 2379 }
2380 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2381}
2382
8f8ecbad 2383static int moxa_get_serial_info(struct moxa_port *info,
1da177e4
LT		 2384 struct serial_struct __user *retinfo)
2385{
2386 struct serial_struct tmp;
2387
2388 memset(&tmp, 0, sizeof(tmp));
2389 tmp.type = info->type;
2390 tmp.line = info->port;
2391 tmp.port = 0;
2392 tmp.irq = 0;
2393 tmp.flags = info->asyncflags;
2394 tmp.baud_base = 921600;
2395 tmp.close_delay = info->close_delay;
2396 tmp.closing_wait = info->closing_wait;
2397 tmp.custom_divisor = 0;
2398 tmp.hub6 = 0;
2399 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2400 return -EFAULT;
2401 return (0);
2402}
2403
2404
8f8ecbad 2405static int moxa_set_serial_info(struct moxa_port *info,
1da177e4
LT		 2406 struct serial_struct __user *new_info)
2407{
2408 struct serial_struct new_serial;
2409
2410 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2411 return -EFAULT;
2412
2413 if ((new_serial.irq != 0) ||
2414 (new_serial.port != 0) ||
2415// (new_serial.type != info->type) ||
2416 (new_serial.custom_divisor != 0) ||
2417 (new_serial.baud_base != 921600))
2418 return (-EPERM);
2419
2420 if (!capable(CAP_SYS_ADMIN)) {
2421 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2422 (info->asyncflags & ~ASYNC_USR_MASK)))
2423 return (-EPERM);
2424 } else {
2425 info->close_delay = new_serial.close_delay * HZ / 100;
2426 info->closing_wait = new_serial.closing_wait * HZ / 100;
2427 }
2428
2429 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2430 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2431
2432 if (new_serial.type == PORT_16550A) {
2433 MoxaSetFifo(info->port, 1);
2434 } else {
2435 MoxaSetFifo(info->port, 0);
2436 }
2437
2438 info->type = new_serial.type;
2439 return (0);
2440}
2441
2442
2443
2444/*****************************************************************************
2445 * Static local functions: *
2446 *****************************************************************************/
1da177e4
LT		 2447static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
2448{
2449
2450 writew(arg, ofsAddr + FuncArg);
2451 writew(cmd, ofsAddr + FuncCode);
6f56b658 2452 moxa_wait_finish(ofsAddr);
1da177e4
LT		 2453}
2454
6f56b658 2455static void moxa_wait_finish(void __iomem *ofsAddr)
1da177e4
LT		 2456{
2457 unsigned long i, j;
2458
2459 i = jiffies;
2460 while (readw(ofsAddr + FuncCode) != 0) {
2461 j = jiffies;
2462 if ((j - i) > moxaFuncTout) {
2463 return;
2464 }
2465 }
2466}
2467
6f56b658 2468static void moxa_low_water_check(void __iomem *ofsAddr)
1da177e4
LT		 2469{
2470 int len;
2471 ushort rptr, wptr, mask;
2472
2473 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2474 rptr = readw(ofsAddr + RXrptr);
2475 wptr = readw(ofsAddr + RXwptr);
2476 mask = readw(ofsAddr + RX_mask);
2477 len = (wptr - rptr) & mask;
2478 if (len <= Low_water)
2479 moxafunc(ofsAddr, FC_SendXon, 0);
2480 }
2481}
2482
2483static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2484{
2485 void __iomem *baseAddr;
2486 int i;
2487
a2f72982 2488 if(len < 0 || len > sizeof(moxaBuff))
2489 return -EINVAL;
1da177e4
LT		 2490 if(copy_from_user(moxaBuff, tmp, len))
2491 return -EFAULT;
8f8ecbad 2492 baseAddr = moxa_boards[cardno].basemem;
1da177e4 2493 writeb(HW_reset, baseAddr + Control_reg); /* reset */
24c032f1 2494 msleep(10);
1da177e4
LT		 2495 for (i = 0; i < 4096; i++)
2496 writeb(0, baseAddr + i); /* clear fix page */
2497 for (i = 0; i < len; i++)
2498 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2499 writeb(0, baseAddr + Control_reg); /* restart */
2500 return (0);
2501}
2502
2503static int moxafindcard(int cardno)
2504{
2505 void __iomem *baseAddr;
2506 ushort tmp;
2507
8f8ecbad 2508 baseAddr = moxa_boards[cardno].basemem;
1da177e4
LT		 2509 switch (moxa_boards[cardno].boardType) {
2510 case MOXA_BOARD_C218_ISA:
2511 case MOXA_BOARD_C218_PCI:
2512 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2513 return (-1);
2514 }
2515 break;
2516 case MOXA_BOARD_CP204J:
2517 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2518 return (-1);
2519 }
2520 break;
2521 default:
2522 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2523 return (-1);
2524 }
2525 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2526 return (-2);
2527 }
2528 }
2529 return (0);
2530}
2531
2532static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2533{
2534 void __iomem *baseAddr;
2535 int i;
2536
a2f72982 2537 if(len < 0 || len > sizeof(moxaBuff))
1da177e4
LT		 2538 return -EINVAL;
2539 if(copy_from_user(moxaBuff, tmp, len))
2540 return -EFAULT;
8f8ecbad 2541 baseAddr = moxa_boards[cardno].basemem;
1da177e4
LT		 2542 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2543 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2544 for (i = 0; i < 7168; i++)
2545 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2546 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2547 for (i = 0; i < (len - 7168); i++)
2548 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2549 return (0);
2550}
2551
2552static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2553{
2554 void __iomem *baseAddr, *ofsAddr;
2555 int retval, port, i;
2556
a2f72982 2557 if(len < 0 || len > sizeof(moxaBuff))
2558 return -EINVAL;
1da177e4
LT		 2559 if(copy_from_user(moxaBuff, tmp, len))
2560 return -EFAULT;
8f8ecbad 2561 baseAddr = moxa_boards[cardno].basemem;
1da177e4
LT		 2562 switch (moxa_boards[cardno].boardType) {
2563 case MOXA_BOARD_C218_ISA:
2564 case MOXA_BOARD_C218_PCI:
2565 case MOXA_BOARD_CP204J:
2566 retval = moxaloadc218(cardno, baseAddr, len);
2567 if (retval)
2568 return (retval);
2569 port = cardno * MAX_PORTS_PER_BOARD;
2570 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
8f8ecbad
JS		 2571 struct moxa_port *p = &moxa_ports[port];
2572
2573 p->chkPort = 1;
2574 p->curBaud = 9600L;
2575 p->DCDState = 0;
2576 p->tableAddr = baseAddr + Extern_table + Extern_size * i;
2577 ofsAddr = p->tableAddr;
1da177e4
LT		 2578 writew(C218rx_mask, ofsAddr + RX_mask);
2579 writew(C218tx_mask, ofsAddr + TX_mask);
2580 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2581 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2582
2583 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2584 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2585
2586 }
2587 break;
2588 default:
2589 retval = moxaloadc320(cardno, baseAddr, len,
2590 &moxa_boards[cardno].numPorts);
2591 if (retval)
2592 return (retval);
2593 port = cardno * MAX_PORTS_PER_BOARD;
2594 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
8f8ecbad
JS		 2595 struct moxa_port *p = &moxa_ports[port];
2596
2597 p->chkPort = 1;
2598 p->curBaud = 9600L;
2599 p->DCDState = 0;
2600 p->tableAddr = baseAddr + Extern_table + Extern_size * i;
2601 ofsAddr = p->tableAddr;
1da177e4
LT		 2602 if (moxa_boards[cardno].numPorts == 8) {
2603 writew(C320p8rx_mask, ofsAddr + RX_mask);
2604 writew(C320p8tx_mask, ofsAddr + TX_mask);
2605 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2606 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2607 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2608 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2609
2610 } else if (moxa_boards[cardno].numPorts == 16) {
2611 writew(C320p16rx_mask, ofsAddr + RX_mask);
2612 writew(C320p16tx_mask, ofsAddr + TX_mask);
2613 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2614 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2615 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2616 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2617
2618 } else if (moxa_boards[cardno].numPorts == 24) {
2619 writew(C320p24rx_mask, ofsAddr + RX_mask);
2620 writew(C320p24tx_mask, ofsAddr + TX_mask);
2621 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2622 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2623 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2624 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2625 } else if (moxa_boards[cardno].numPorts == 32) {
2626 writew(C320p32rx_mask, ofsAddr + RX_mask);
2627 writew(C320p32tx_mask, ofsAddr + TX_mask);
2628 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2629 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2630 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2631 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2632 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2633 }
2634 }
2635 break;
2636 }
8f8ecbad 2637 moxa_boards[cardno].loadstat = 1;
1da177e4
LT		 2638 return (0);
2639}
2640
2641static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
2642{
2643 char retry;
2644 int i, j, len1, len2;
2645 ushort usum, *ptr, keycode;
2646
2647 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2648 keycode = CP204J_KeyCode;
2649 else
2650 keycode = C218_KeyCode;
2651 usum = 0;
2652 len1 = len >> 1;
2653 ptr = (ushort *) moxaBuff;
2654 for (i = 0; i < len1; i++)
01cfaf0d 2655 usum += le16_to_cpu(*(ptr + i));
1da177e4
LT		 2656 retry = 0;
2657 do {
2658 len1 = len >> 1;
2659 j = 0;
2660 while (len1) {
2661 len2 = (len1 > 2048) ? 2048 : len1;
2662 len1 -= len2;
2663 for (i = 0; i < len2 << 1; i++)
2664 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2665 j += i;
2666
2667 writew(len2, baseAddr + C218DLoad_len);
2668 writew(0, baseAddr + C218_key);
2669 for (i = 0; i < 100; i++) {
2670 if (readw(baseAddr + C218_key) == keycode)
2671 break;
24c032f1 2672 msleep(10);
1da177e4
LT		 2673 }
2674 if (readw(baseAddr + C218_key) != keycode) {
2675 return (-1);
2676 }
2677 }
2678 writew(0, baseAddr + C218DLoad_len);
2679 writew(usum, baseAddr + C218check_sum);
2680 writew(0, baseAddr + C218_key);
2681 for (i = 0; i < 100; i++) {
2682 if (readw(baseAddr + C218_key) == keycode)
2683 break;
24c032f1 2684 msleep(10);
1da177e4
LT		 2685 }
2686 retry++;
2687 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2688 if (readb(baseAddr + C218chksum_ok) != 1) {
2689 return (-1);
2690 }
2691 writew(0, baseAddr + C218_key);
2692 for (i = 0; i < 100; i++) {
2693 if (readw(baseAddr + Magic_no) == Magic_code)
2694 break;
24c032f1 2695 msleep(10);
1da177e4
LT		 2696 }
2697 if (readw(baseAddr + Magic_no) != Magic_code) {
2698 return (-1);
2699 }
2700 writew(1, baseAddr + Disable_IRQ);
2701 writew(0, baseAddr + Magic_no);
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 moxaCard = 1;
8f8ecbad
JS		 2711 moxa_boards[cardno].intNdx = baseAddr + IRQindex;
2712 moxa_boards[cardno].intPend = baseAddr + IRQpending;
2713 moxa_boards[cardno].intTable = baseAddr + IRQtable;
1da177e4
LT		 2714 return (0);
2715}
2716
2717static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
2718{
2719 ushort usum;
2720 int i, j, wlen, len2, retry;
2721 ushort *uptr;
2722
2723 usum = 0;
2724 wlen = len >> 1;
2725 uptr = (ushort *) moxaBuff;
2726 for (i = 0; i < wlen; i++)
01cfaf0d 2727 usum += le16_to_cpu(uptr[i]);
1da177e4
LT		 2728 retry = 0;
2729 j = 0;
2730 do {
2731 while (wlen) {
2732 if (wlen > 2048)
2733 len2 = 2048;
2734 else
2735 len2 = wlen;
2736 wlen -= len2;
2737 len2 <<= 1;
2738 for (i = 0; i < len2; i++)
2739 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
2740 len2 >>= 1;
2741 j += i;
2742 writew(len2, baseAddr + C320DLoad_len);
2743 writew(0, baseAddr + C320_key);
2744 for (i = 0; i < 10; i++) {
2745 if (readw(baseAddr + C320_key) == C320_KeyCode)
2746 break;
24c032f1 2747 msleep(10);
1da177e4
LT		 2748 }
2749 if (readw(baseAddr + C320_key) != C320_KeyCode)
2750 return (-1);
2751 }
2752 writew(0, baseAddr + C320DLoad_len);
2753 writew(usum, baseAddr + C320check_sum);
2754 writew(0, baseAddr + C320_key);
2755 for (i = 0; i < 10; i++) {
2756 if (readw(baseAddr + C320_key) == C320_KeyCode)
2757 break;
24c032f1 2758 msleep(10);
1da177e4
LT		 2759 }
2760 retry++;
2761 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
2762 if (readb(baseAddr + C320chksum_ok) != 1)
2763 return (-1);
2764 writew(0, baseAddr + C320_key);
2765 for (i = 0; i < 600; i++) {
2766 if (readw(baseAddr + Magic_no) == Magic_code)
2767 break;
24c032f1 2768 msleep(10);
1da177e4
LT		 2769 }
2770 if (readw(baseAddr + Magic_no) != Magic_code)
2771 return (-100);
2772
2773 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
2774 writew(0x3800, baseAddr + TMS320_PORT1);
2775 writew(0x3900, baseAddr + TMS320_PORT2);
2776 writew(28499, baseAddr + TMS320_CLOCK);
2777 } else {
2778 writew(0x3200, baseAddr + TMS320_PORT1);
2779 writew(0x3400, baseAddr + TMS320_PORT2);
2780 writew(19999, baseAddr + TMS320_CLOCK);
2781 }
2782 writew(1, baseAddr + Disable_IRQ);
2783 writew(0, baseAddr + Magic_no);
2784 for (i = 0; i < 500; i++) {
2785 if (readw(baseAddr + Magic_no) == Magic_code)
2786 break;
24c032f1 2787 msleep(10);
1da177e4
LT		 2788 }
2789 if (readw(baseAddr + Magic_no) != Magic_code)
2790 return (-102);
2791
2792 j = readw(baseAddr + Module_cnt);
2793 if (j <= 0)
2794 return (-101);
2795 *numPorts = j * 8;
2796 writew(j, baseAddr + Module_no);
2797 writew(0, baseAddr + Magic_no);
2798 for (i = 0; i < 600; i++) {
2799 if (readw(baseAddr + Magic_no) == Magic_code)
2800 break;
24c032f1 2801 msleep(10);
1da177e4
LT		 2802 }
2803 if (readw(baseAddr + Magic_no) != Magic_code)
2804 return (-102);
2805 moxaCard = 1;
8f8ecbad
JS		 2806 moxa_boards[cardno].intNdx = baseAddr + IRQindex;
2807 moxa_boards[cardno].intPend = baseAddr + IRQpending;
2808 moxa_boards[cardno].intTable = baseAddr + IRQtable;
1da177e4
LT		 2809 return (0);
2810}
2811
1da177e4
LT		 2812static void MoxaSetFifo(int port, int enable)
2813{
8f8ecbad 2814 void __iomem *ofsAddr = moxa_ports[port].tableAddr;
1da177e4
LT		 2815
2816 if (!enable) {
2817 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
2818 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
2819 } else {
2820 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
2821 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
2822 }
2823}
Linux 6.x block layer and io_uring tree(s)