1 /*****************************************************************************/
3 * moxa.c -- MOXA Intellio family multiport serial driver.
5 * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com.tw).
7 * This code is loosely based on the Linux serial driver, written by
8 * Linus Torvalds, Theodore T'so and others.
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.
17 * MOXA Intellio Series Driver
23 #include <linux/module.h>
24 #include <linux/types.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>
45 #include <asm/system.h>
47 #include <asm/uaccess.h>
49 #define MOXA_VERSION "5.1k"
52 #define MOXACUMAJOR 173
54 #define MAX_BOARDS 4 /* Don't change this value */
55 #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
56 #define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD)
59 * Define the Moxa PCI vendor and device IDs.
61 #define MOXA_BUS_TYPE_ISA 0
62 #define MOXA_BUS_TYPE_PCI 1
65 MOXA_BOARD_C218_PCI
= 1,
72 static char *moxa_brdname
[] =
74 "C218 Turbo PCI series",
75 "C218 Turbo ISA series",
76 "C320 Turbo PCI series",
77 "C320 Turbo ISA series",
82 static struct pci_device_id moxa_pcibrds
[] = {
83 { PCI_DEVICE(PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_C218
),
84 .driver_data
= MOXA_BOARD_C218_PCI
},
85 { PCI_DEVICE(PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_C320
),
86 .driver_data
= MOXA_BOARD_C320_PCI
},
87 { PCI_DEVICE(PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP204J
),
88 .driver_data
= MOXA_BOARD_CP204J
},
91 MODULE_DEVICE_TABLE(pci
, moxa_pcibrds
);
92 #endif /* CONFIG_PCI */
94 struct moxa_isa_board_conf
{
97 unsigned long baseAddr
;
100 static struct moxa_isa_board_conf moxa_isa_boards
[] =
102 /* {MOXA_BOARD_C218_ISA,8,0xDC000}, */
105 static struct moxa_board_conf
{
108 unsigned long baseAddr
;
110 struct pci_dev
*pdev
;
114 void __iomem
*basemem
;
115 void __iomem
*intNdx
;
116 void __iomem
*intPend
;
117 void __iomem
*intTable
;
118 } moxa_boards
[MAX_BOARDS
];
120 struct mxser_mstatus
{
137 unsigned short closing_wait
;
140 long event
; /* long req'd for set_bit --RR */
142 unsigned long statusflags
;
143 struct tty_struct
*tty
;
145 wait_queue_head_t open_wait
;
146 wait_queue_head_t close_wait
;
148 struct timer_list emptyTimer
;
152 void __iomem
*tableAddr
;
161 #define TXSTOPPED 0x1
163 #define EMPTYWAIT 0x4
166 #define SERIAL_DO_RESTART
168 #define WAKEUP_CHARS 256
170 static int verbose
= 0;
171 static int ttymajor
= MOXAMAJOR
;
172 /* Variables for insmod */
174 static int baseaddr
[4];
176 static int numports
[4];
179 MODULE_AUTHOR("William Chen");
180 MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
181 MODULE_LICENSE("GPL");
183 module_param_array(type
, int, NULL
, 0);
184 module_param_array(baseaddr
, int, NULL
, 0);
185 module_param_array(numports
, int, NULL
, 0);
187 module_param(ttymajor
, int, 0);
188 module_param(verbose
, bool, 0644);
193 static int moxa_open(struct tty_struct
*, struct file
*);
194 static void moxa_close(struct tty_struct
*, struct file
*);
195 static int moxa_write(struct tty_struct
*, const unsigned char *, int);
196 static int moxa_write_room(struct tty_struct
*);
197 static void moxa_flush_buffer(struct tty_struct
*);
198 static int moxa_chars_in_buffer(struct tty_struct
*);
199 static void moxa_flush_chars(struct tty_struct
*);
200 static void moxa_put_char(struct tty_struct
*, unsigned char);
201 static int moxa_ioctl(struct tty_struct
*, struct file
*, unsigned int, unsigned long);
202 static void moxa_throttle(struct tty_struct
*);
203 static void moxa_unthrottle(struct tty_struct
*);
204 static void moxa_set_termios(struct tty_struct
*, struct ktermios
*);
205 static void moxa_stop(struct tty_struct
*);
206 static void moxa_start(struct tty_struct
*);
207 static void moxa_hangup(struct tty_struct
*);
208 static int moxa_tiocmget(struct tty_struct
*tty
, struct file
*file
);
209 static int moxa_tiocmset(struct tty_struct
*tty
, struct file
*file
,
210 unsigned int set
, unsigned int clear
);
211 static void moxa_poll(unsigned long);
212 static void set_tty_param(struct tty_struct
*);
213 static int block_till_ready(struct tty_struct
*, struct file
*,
215 static void setup_empty_event(struct tty_struct
*);
216 static void check_xmit_empty(unsigned long);
217 static void shut_down(struct moxa_port
*);
218 static void receive_data(struct moxa_port
*);
220 * moxa board interface functions:
222 static void MoxaDriverInit(void);
223 static int MoxaDriverIoctl(unsigned int, unsigned long, int);
224 static int MoxaDriverPoll(void);
225 static int MoxaPortsOfCard(int);
226 static int MoxaPortIsValid(int);
227 static void MoxaPortEnable(int);
228 static void MoxaPortDisable(int);
229 static long MoxaPortGetMaxBaud(int);
230 static long MoxaPortSetBaud(int, long);
231 static int MoxaPortSetTermio(int, struct ktermios
*, speed_t
);
232 static int MoxaPortGetLineOut(int, int *, int *);
233 static void MoxaPortLineCtrl(int, int, int);
234 static void MoxaPortFlowCtrl(int, int, int, int, int, int);
235 static int MoxaPortLineStatus(int);
236 static int MoxaPortDCDChange(int);
237 static int MoxaPortDCDON(int);
238 static void MoxaPortFlushData(int, int);
239 static int MoxaPortWriteData(int, unsigned char *, int);
240 static int MoxaPortReadData(int, struct tty_struct
*tty
);
241 static int MoxaPortTxQueue(int);
242 static int MoxaPortRxQueue(int);
243 static int MoxaPortTxFree(int);
244 static void MoxaPortTxDisable(int);
245 static void MoxaPortTxEnable(int);
246 static int MoxaPortResetBrkCnt(int);
247 static void MoxaPortSendBreak(int, int);
248 static int moxa_get_serial_info(struct moxa_port
*, struct serial_struct __user
*);
249 static int moxa_set_serial_info(struct moxa_port
*, struct serial_struct __user
*);
250 static void MoxaSetFifo(int port
, int enable
);
252 static const struct tty_operations moxa_ops
= {
256 .write_room
= moxa_write_room
,
257 .flush_buffer
= moxa_flush_buffer
,
258 .chars_in_buffer
= moxa_chars_in_buffer
,
259 .flush_chars
= moxa_flush_chars
,
260 .put_char
= moxa_put_char
,
262 .throttle
= moxa_throttle
,
263 .unthrottle
= moxa_unthrottle
,
264 .set_termios
= moxa_set_termios
,
267 .hangup
= moxa_hangup
,
268 .tiocmget
= moxa_tiocmget
,
269 .tiocmset
= moxa_tiocmset
,
272 static struct tty_driver
*moxaDriver
;
273 static struct moxa_port moxa_ports
[MAX_PORTS
];
274 static DEFINE_TIMER(moxaTimer
, moxa_poll
, 0, 0);
275 static DEFINE_SPINLOCK(moxa_lock
);
278 static int moxa_get_PCI_conf(struct pci_dev
*p
, int board_type
,
279 struct moxa_board_conf
*board
)
281 board
->baseAddr
= pci_resource_start (p
, 2);
282 board
->boardType
= board_type
;
283 switch (board_type
) {
284 case MOXA_BOARD_C218_ISA
:
285 case MOXA_BOARD_C218_PCI
:
289 case MOXA_BOARD_CP204J
:
296 board
->busType
= MOXA_BUS_TYPE_PCI
;
297 /* don't lose the reference in the next pci_get_device iteration */
298 board
->pdev
= pci_dev_get(p
);
302 #endif /* CONFIG_PCI */
304 static int __init
moxa_init(void)
307 struct moxa_port
*ch
;
309 printk(KERN_INFO
"MOXA Intellio family driver version %s\n", MOXA_VERSION
);
310 moxaDriver
= alloc_tty_driver(MAX_PORTS
+ 1);
314 moxaDriver
->owner
= THIS_MODULE
;
315 moxaDriver
->name
= "ttyMX";
316 moxaDriver
->major
= ttymajor
;
317 moxaDriver
->minor_start
= 0;
318 moxaDriver
->type
= TTY_DRIVER_TYPE_SERIAL
;
319 moxaDriver
->subtype
= SERIAL_TYPE_NORMAL
;
320 moxaDriver
->init_termios
= tty_std_termios
;
321 moxaDriver
->init_termios
.c_cflag
= B9600
| CS8
| CREAD
| CLOCAL
| HUPCL
;
322 moxaDriver
->init_termios
.c_ispeed
= 9600;
323 moxaDriver
->init_termios
.c_ospeed
= 9600;
324 moxaDriver
->flags
= TTY_DRIVER_REAL_RAW
;
325 tty_set_operations(moxaDriver
, &moxa_ops
);
327 for (i
= 0, ch
= moxa_ports
; i
< MAX_PORTS
; i
++, ch
++) {
328 ch
->type
= PORT_16550A
;
330 ch
->close_delay
= 5 * HZ
/ 10;
331 ch
->closing_wait
= 30 * HZ
;
332 ch
->cflag
= B9600
| CS8
| CREAD
| CLOCAL
| HUPCL
;
333 init_waitqueue_head(&ch
->open_wait
);
334 init_waitqueue_head(&ch
->close_wait
);
336 setup_timer(&ch
->emptyTimer
, check_xmit_empty
,
340 printk("Tty devices major number = %d\n", ttymajor
);
342 if (tty_register_driver(moxaDriver
)) {
343 printk(KERN_ERR
"Couldn't install MOXA Smartio family driver !\n");
344 put_tty_driver(moxaDriver
);
348 mod_timer(&moxaTimer
, jiffies
+ HZ
/ 50);
350 /* Find the boards defined in source code */
352 for (i
= 0; i
< MAX_BOARDS
; i
++) {
353 if ((moxa_isa_boards
[i
].boardType
== MOXA_BOARD_C218_ISA
) ||
354 (moxa_isa_boards
[i
].boardType
== MOXA_BOARD_C320_ISA
)) {
355 moxa_boards
[numBoards
].boardType
= moxa_isa_boards
[i
].boardType
;
356 if (moxa_isa_boards
[i
].boardType
== MOXA_BOARD_C218_ISA
)
357 moxa_boards
[numBoards
].numPorts
= 8;
359 moxa_boards
[numBoards
].numPorts
= moxa_isa_boards
[i
].numPorts
;
360 moxa_boards
[numBoards
].busType
= MOXA_BUS_TYPE_ISA
;
361 moxa_boards
[numBoards
].baseAddr
= moxa_isa_boards
[i
].baseAddr
;
363 printk("Board %2d: %s board(baseAddr=%lx)\n",
365 moxa_brdname
[moxa_boards
[numBoards
].boardType
- 1],
366 moxa_boards
[numBoards
].baseAddr
);
370 /* Find the boards defined form module args. */
372 for (i
= 0; i
< MAX_BOARDS
; i
++) {
373 if ((type
[i
] == MOXA_BOARD_C218_ISA
) ||
374 (type
[i
] == MOXA_BOARD_C320_ISA
)) {
376 printk("Board %2d: %s board(baseAddr=%lx)\n",
378 moxa_brdname
[type
[i
] - 1],
379 (unsigned long) baseaddr
[i
]);
380 if (numBoards
>= MAX_BOARDS
) {
382 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS
);
385 moxa_boards
[numBoards
].boardType
= type
[i
];
386 if (moxa_isa_boards
[i
].boardType
== MOXA_BOARD_C218_ISA
)
387 moxa_boards
[numBoards
].numPorts
= 8;
389 moxa_boards
[numBoards
].numPorts
= numports
[i
];
390 moxa_boards
[numBoards
].busType
= MOXA_BUS_TYPE_ISA
;
391 moxa_boards
[numBoards
].baseAddr
= baseaddr
[i
];
396 /* Find PCI boards here */
399 struct pci_dev
*p
= NULL
;
400 int n
= ARRAY_SIZE(moxa_pcibrds
) - 1;
403 while ((p
= pci_get_device(moxa_pcibrds
[i
].vendor
, moxa_pcibrds
[i
].device
, p
))!=NULL
)
405 if (pci_enable_device(p
))
407 if (numBoards
>= MAX_BOARDS
) {
409 printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS
);
411 moxa_get_PCI_conf(p
, moxa_pcibrds
[i
].driver_data
,
412 &moxa_boards
[numBoards
]);
420 for (i
= 0; i
< numBoards
; i
++) {
421 moxa_boards
[i
].basemem
= ioremap(moxa_boards
[i
].baseAddr
,
428 static void __exit
moxa_exit(void)
433 printk("Unloading module moxa ...\n");
435 del_timer_sync(&moxaTimer
);
437 for (i
= 0; i
< MAX_PORTS
; i
++)
438 del_timer_sync(&moxa_ports
[i
].emptyTimer
);
440 if (tty_unregister_driver(moxaDriver
))
441 printk("Couldn't unregister MOXA Intellio family serial driver\n");
442 put_tty_driver(moxaDriver
);
444 for (i
= 0; i
< MAX_BOARDS
; i
++) {
445 if (moxa_boards
[i
].basemem
)
446 iounmap(moxa_boards
[i
].basemem
);
447 if (moxa_boards
[i
].busType
== MOXA_BUS_TYPE_PCI
)
448 pci_dev_put(moxa_boards
[i
].pdev
);
455 module_init(moxa_init
);
456 module_exit(moxa_exit
);
458 static int moxa_open(struct tty_struct
*tty
, struct file
*filp
)
460 struct moxa_port
*ch
;
465 if (port
== MAX_PORTS
) {
468 if (!MoxaPortIsValid(port
)) {
469 tty
->driver_data
= NULL
;
473 ch
= &moxa_ports
[port
];
475 tty
->driver_data
= ch
;
477 if (!(ch
->asyncflags
& ASYNC_INITIALIZED
)) {
480 MoxaPortLineCtrl(ch
->port
, 1, 1);
481 MoxaPortEnable(ch
->port
);
482 ch
->asyncflags
|= ASYNC_INITIALIZED
;
484 retval
= block_till_ready(tty
, filp
, ch
);
486 moxa_unthrottle(tty
);
488 if (ch
->type
== PORT_16550A
) {
489 MoxaSetFifo(ch
->port
, 1);
491 MoxaSetFifo(ch
->port
, 0);
497 static void moxa_close(struct tty_struct
*tty
, struct file
*filp
)
499 struct moxa_port
*ch
;
503 if (port
== MAX_PORTS
) {
506 if (!MoxaPortIsValid(port
)) {
507 #ifdef SERIAL_DEBUG_CLOSE
508 printk("Invalid portno in moxa_close\n");
510 tty
->driver_data
= NULL
;
513 if (tty
->driver_data
== NULL
) {
516 if (tty_hung_up_p(filp
)) {
519 ch
= (struct moxa_port
*) tty
->driver_data
;
521 if ((tty
->count
== 1) && (ch
->count
!= 1)) {
522 printk("moxa_close: bad serial port count; tty->count is 1, "
523 "ch->count is %d\n", ch
->count
);
526 if (--ch
->count
< 0) {
527 printk("moxa_close: bad serial port count, device=%s\n",
534 ch
->asyncflags
|= ASYNC_CLOSING
;
536 ch
->cflag
= tty
->termios
->c_cflag
;
537 if (ch
->asyncflags
& ASYNC_INITIALIZED
) {
538 setup_empty_event(tty
);
539 tty_wait_until_sent(tty
, 30 * HZ
); /* 30 seconds timeout */
540 del_timer_sync(&moxa_ports
[ch
->port
].emptyTimer
);
543 MoxaPortFlushData(port
, 2);
545 if (tty
->driver
->flush_buffer
)
546 tty
->driver
->flush_buffer(tty
);
547 tty_ldisc_flush(tty
);
552 if (ch
->blocked_open
) {
553 if (ch
->close_delay
) {
554 msleep_interruptible(jiffies_to_msecs(ch
->close_delay
));
556 wake_up_interruptible(&ch
->open_wait
);
558 ch
->asyncflags
&= ~(ASYNC_NORMAL_ACTIVE
| ASYNC_CLOSING
);
559 wake_up_interruptible(&ch
->close_wait
);
562 static int moxa_write(struct tty_struct
*tty
,
563 const unsigned char *buf
, int count
)
565 struct moxa_port
*ch
;
569 ch
= (struct moxa_port
*) tty
->driver_data
;
574 spin_lock_irqsave(&moxa_lock
, flags
);
575 len
= MoxaPortWriteData(port
, (unsigned char *) buf
, count
);
576 spin_unlock_irqrestore(&moxa_lock
, flags
);
578 /*********************************************
579 if ( !(ch->statusflags & LOWWAIT) &&
580 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
581 ************************************************/
582 ch
->statusflags
|= LOWWAIT
;
586 static int moxa_write_room(struct tty_struct
*tty
)
588 struct moxa_port
*ch
;
592 ch
= (struct moxa_port
*) tty
->driver_data
;
595 return (MoxaPortTxFree(ch
->port
));
598 static void moxa_flush_buffer(struct tty_struct
*tty
)
600 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
604 MoxaPortFlushData(ch
->port
, 1);
608 static int moxa_chars_in_buffer(struct tty_struct
*tty
)
611 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
614 * Sigh...I have to check if driver_data is NULL here, because
615 * if an open() fails, the TTY subsystem eventually calls
616 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
617 * routine. And since the open() failed, we return 0 here. TDJ
621 chars
= MoxaPortTxQueue(ch
->port
);
624 * Make it possible to wakeup anything waiting for output
625 * in tty_ioctl.c, etc.
627 if (!(ch
->statusflags
& EMPTYWAIT
))
628 setup_empty_event(tty
);
633 static void moxa_flush_chars(struct tty_struct
*tty
)
636 * Don't think I need this, because this is called to empty the TX
637 * buffer for the 16450, 16550, etc.
641 static void moxa_put_char(struct tty_struct
*tty
, unsigned char c
)
643 struct moxa_port
*ch
;
647 ch
= (struct moxa_port
*) tty
->driver_data
;
651 spin_lock_irqsave(&moxa_lock
, flags
);
652 MoxaPortWriteData(port
, &c
, 1);
653 spin_unlock_irqrestore(&moxa_lock
, flags
);
654 /************************************************
655 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
656 *************************************************/
657 ch
->statusflags
|= LOWWAIT
;
660 static int moxa_tiocmget(struct tty_struct
*tty
, struct file
*file
)
662 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
664 int flag
= 0, dtr
, rts
;
667 if ((port
!= MAX_PORTS
) && (!ch
))
670 MoxaPortGetLineOut(ch
->port
, &dtr
, &rts
);
675 dtr
= MoxaPortLineStatus(ch
->port
);
685 static int moxa_tiocmset(struct tty_struct
*tty
, struct file
*file
,
686 unsigned int set
, unsigned int clear
)
688 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
693 if ((port
!= MAX_PORTS
) && (!ch
))
696 MoxaPortGetLineOut(ch
->port
, &dtr
, &rts
);
701 if (clear
& TIOCM_RTS
)
703 if (clear
& TIOCM_DTR
)
705 MoxaPortLineCtrl(ch
->port
, dtr
, rts
);
709 static int moxa_ioctl(struct tty_struct
*tty
, struct file
*file
,
710 unsigned int cmd
, unsigned long arg
)
712 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
714 void __user
*argp
= (void __user
*)arg
;
718 if ((port
!= MAX_PORTS
) && (!ch
))
722 case TCSBRK
: /* SVID version: non-zero arg --> no break */
723 retval
= tty_check_change(tty
);
726 setup_empty_event(tty
);
727 tty_wait_until_sent(tty
, 0);
729 MoxaPortSendBreak(ch
->port
, 0);
731 case TCSBRKP
: /* support for POSIX tcsendbreak() */
732 retval
= tty_check_change(tty
);
735 setup_empty_event(tty
);
736 tty_wait_until_sent(tty
, 0);
737 MoxaPortSendBreak(ch
->port
, arg
);
740 return put_user(C_CLOCAL(tty
) ? 1 : 0, (unsigned long __user
*) argp
);
742 if(get_user(retval
, (unsigned long __user
*) argp
))
745 tty
->termios
->c_cflag
= ((tty
->termios
->c_cflag
& ~CLOCAL
) |
748 ch
->asyncflags
&= ~ASYNC_CHECK_CD
;
750 ch
->asyncflags
|= ASYNC_CHECK_CD
;
753 return moxa_get_serial_info(ch
, argp
);
756 return moxa_set_serial_info(ch
, argp
);
758 retval
= MoxaDriverIoctl(cmd
, arg
, port
);
763 static void moxa_throttle(struct tty_struct
*tty
)
765 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
767 ch
->statusflags
|= THROTTLE
;
770 static void moxa_unthrottle(struct tty_struct
*tty
)
772 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
774 ch
->statusflags
&= ~THROTTLE
;
777 static void moxa_set_termios(struct tty_struct
*tty
,
778 struct ktermios
*old_termios
)
780 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
785 if (!(old_termios
->c_cflag
& CLOCAL
) &&
786 (tty
->termios
->c_cflag
& CLOCAL
))
787 wake_up_interruptible(&ch
->open_wait
);
790 static void moxa_stop(struct tty_struct
*tty
)
792 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
796 MoxaPortTxDisable(ch
->port
);
797 ch
->statusflags
|= TXSTOPPED
;
801 static void moxa_start(struct tty_struct
*tty
)
803 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
808 if (!(ch
->statusflags
& TXSTOPPED
))
811 MoxaPortTxEnable(ch
->port
);
812 ch
->statusflags
&= ~TXSTOPPED
;
815 static void moxa_hangup(struct tty_struct
*tty
)
817 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
819 moxa_flush_buffer(tty
);
823 ch
->asyncflags
&= ~ASYNC_NORMAL_ACTIVE
;
825 wake_up_interruptible(&ch
->open_wait
);
828 static void moxa_poll(unsigned long ignored
)
831 struct moxa_port
*ch
;
832 struct tty_struct
*tp
;
835 del_timer(&moxaTimer
);
837 if (MoxaDriverPoll() < 0) {
838 mod_timer(&moxaTimer
, jiffies
+ HZ
/ 50);
841 for (card
= 0; card
< MAX_BOARDS
; card
++) {
842 if ((ports
= MoxaPortsOfCard(card
)) <= 0)
844 ch
= &moxa_ports
[card
* MAX_PORTS_PER_BOARD
];
845 for (i
= 0; i
< ports
; i
++, ch
++) {
846 if ((ch
->asyncflags
& ASYNC_INITIALIZED
) == 0)
848 if (!(ch
->statusflags
& THROTTLE
) &&
849 (MoxaPortRxQueue(ch
->port
) > 0))
851 if ((tp
= ch
->tty
) == 0)
853 if (ch
->statusflags
& LOWWAIT
) {
854 if (MoxaPortTxQueue(ch
->port
) <= WAKEUP_CHARS
) {
856 ch
->statusflags
&= ~LOWWAIT
;
861 if (!I_IGNBRK(tp
) && (MoxaPortResetBrkCnt(ch
->port
) > 0)) {
862 tty_insert_flip_char(tp
, 0, TTY_BREAK
);
863 tty_schedule_flip(tp
);
865 if (MoxaPortDCDChange(ch
->port
)) {
866 if (ch
->asyncflags
& ASYNC_CHECK_CD
) {
867 if (MoxaPortDCDON(ch
->port
))
868 wake_up_interruptible(&ch
->open_wait
);
871 wake_up_interruptible(&ch
->open_wait
);
872 ch
->asyncflags
&= ~ASYNC_NORMAL_ACTIVE
;
879 mod_timer(&moxaTimer
, jiffies
+ HZ
/ 50);
882 /******************************************************************************/
884 static void set_tty_param(struct tty_struct
*tty
)
886 register struct ktermios
*ts
;
887 struct moxa_port
*ch
;
888 int rts
, cts
, txflow
, rxflow
, xany
;
890 ch
= (struct moxa_port
*) tty
->driver_data
;
892 if (ts
->c_cflag
& CLOCAL
)
893 ch
->asyncflags
&= ~ASYNC_CHECK_CD
;
895 ch
->asyncflags
|= ASYNC_CHECK_CD
;
896 rts
= cts
= txflow
= rxflow
= xany
= 0;
897 if (ts
->c_cflag
& CRTSCTS
)
899 if (ts
->c_iflag
& IXON
)
901 if (ts
->c_iflag
& IXOFF
)
903 if (ts
->c_iflag
& IXANY
)
905 MoxaPortFlowCtrl(ch
->port
, rts
, cts
, txflow
, rxflow
, xany
);
906 MoxaPortSetTermio(ch
->port
, ts
, tty_get_baud_rate(tty
));
909 static int block_till_ready(struct tty_struct
*tty
, struct file
*filp
,
910 struct moxa_port
*ch
)
912 DECLARE_WAITQUEUE(wait
,current
);
915 int do_clocal
= C_CLOCAL(tty
);
918 * If the device is in the middle of being closed, then block
919 * until it's done, and then try again.
921 if (tty_hung_up_p(filp
) || (ch
->asyncflags
& ASYNC_CLOSING
)) {
922 if (ch
->asyncflags
& ASYNC_CLOSING
)
923 interruptible_sleep_on(&ch
->close_wait
);
924 #ifdef SERIAL_DO_RESTART
925 if (ch
->asyncflags
& ASYNC_HUP_NOTIFY
)
928 return (-ERESTARTSYS
);
934 * If non-blocking mode is set, then make the check up front
937 if (filp
->f_flags
& O_NONBLOCK
) {
938 ch
->asyncflags
|= ASYNC_NORMAL_ACTIVE
;
942 * Block waiting for the carrier detect and the line to become free
945 add_wait_queue(&ch
->open_wait
, &wait
);
946 #ifdef SERIAL_DEBUG_OPEN
947 printk("block_til_ready before block: ttys%d, count = %d\n",
948 ch
->line
, ch
->count
);
950 spin_lock_irqsave(&moxa_lock
, flags
);
951 if (!tty_hung_up_p(filp
))
954 spin_unlock_irqrestore(&moxa_lock
, flags
);
957 set_current_state(TASK_INTERRUPTIBLE
);
958 if (tty_hung_up_p(filp
) ||
959 !(ch
->asyncflags
& ASYNC_INITIALIZED
)) {
960 #ifdef SERIAL_DO_RESTART
961 if (ch
->asyncflags
& ASYNC_HUP_NOTIFY
)
964 retval
= -ERESTARTSYS
;
970 if (!(ch
->asyncflags
& ASYNC_CLOSING
) && (do_clocal
||
971 MoxaPortDCDON(ch
->port
)))
974 if (signal_pending(current
)) {
975 retval
= -ERESTARTSYS
;
980 set_current_state(TASK_RUNNING
);
981 remove_wait_queue(&ch
->open_wait
, &wait
);
983 spin_lock_irqsave(&moxa_lock
, flags
);
984 if (!tty_hung_up_p(filp
))
987 spin_unlock_irqrestore(&moxa_lock
, flags
);
988 #ifdef SERIAL_DEBUG_OPEN
989 printk("block_til_ready after blocking: ttys%d, count = %d\n",
990 ch
->line
, ch
->count
);
994 /* FIXME: review to see if we need to use set_bit on these */
995 ch
->asyncflags
|= ASYNC_NORMAL_ACTIVE
;
999 static void setup_empty_event(struct tty_struct
*tty
)
1001 struct moxa_port
*ch
= tty
->driver_data
;
1002 unsigned long flags
;
1004 spin_lock_irqsave(&moxa_lock
, flags
);
1005 ch
->statusflags
|= EMPTYWAIT
;
1006 mod_timer(&moxa_ports
[ch
->port
].emptyTimer
, jiffies
+ HZ
);
1007 spin_unlock_irqrestore(&moxa_lock
, flags
);
1010 static void check_xmit_empty(unsigned long data
)
1012 struct moxa_port
*ch
;
1014 ch
= (struct moxa_port
*) data
;
1015 del_timer_sync(&moxa_ports
[ch
->port
].emptyTimer
);
1016 if (ch
->tty
&& (ch
->statusflags
& EMPTYWAIT
)) {
1017 if (MoxaPortTxQueue(ch
->port
) == 0) {
1018 ch
->statusflags
&= ~EMPTYWAIT
;
1019 tty_wakeup(ch
->tty
);
1022 mod_timer(&moxa_ports
[ch
->port
].emptyTimer
, jiffies
+ HZ
);
1024 ch
->statusflags
&= ~EMPTYWAIT
;
1027 static void shut_down(struct moxa_port
*ch
)
1029 struct tty_struct
*tp
;
1031 if (!(ch
->asyncflags
& ASYNC_INITIALIZED
))
1036 MoxaPortDisable(ch
->port
);
1039 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1041 if (tp
->termios
->c_cflag
& HUPCL
)
1042 MoxaPortLineCtrl(ch
->port
, 0, 0);
1044 ch
->asyncflags
&= ~ASYNC_INITIALIZED
;
1047 static void receive_data(struct moxa_port
*ch
)
1049 struct tty_struct
*tp
;
1050 struct ktermios
*ts
;
1051 unsigned long flags
;
1057 /**************************************************
1058 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1059 *****************************************************/
1061 MoxaPortFlushData(ch
->port
, 0);
1064 spin_lock_irqsave(&moxa_lock
, flags
);
1065 MoxaPortReadData(ch
->port
, tp
);
1066 spin_unlock_irqrestore(&moxa_lock
, flags
);
1067 tty_schedule_flip(tp
);
1070 #define Magic_code 0x404
1073 * System Configuration
1076 * for C218 BIOS initialization
1078 #define C218_ConfBase 0x800
1079 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1080 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1081 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1082 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1083 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1084 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1085 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1086 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1087 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1088 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1090 #define C218_LoadBuf 0x0F00
1091 #define C218_KeyCode 0x218
1092 #define CP204J_KeyCode 0x204
1095 * for C320 BIOS initialization
1097 #define C320_ConfBase 0x800
1098 #define C320_LoadBuf 0x0f00
1099 #define STS_init 0x05 /* for C320_status */
1101 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1102 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1103 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1104 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1105 #define C320check_sum C320_ConfBase + 8 /* WORD */
1106 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1107 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1108 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1110 #define C320_KeyCode 0x320
1112 #define FixPage_addr 0x0000 /* starting addr of static page */
1113 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1114 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1115 #define Control_reg 0x1ff0 /* select page and reset control */
1116 #define HW_reset 0x80
1121 #define FC_CardReset 0x80
1122 #define FC_ChannelReset 1 /* C320 firmware not supported */
1123 #define FC_EnableCH 2
1124 #define FC_DisableCH 3
1125 #define FC_SetParam 4
1126 #define FC_SetMode 5
1127 #define FC_SetRate 6
1128 #define FC_LineControl 7
1129 #define FC_LineStatus 8
1130 #define FC_XmitControl 9
1131 #define FC_FlushQueue 10
1132 #define FC_SendBreak 11
1133 #define FC_StopBreak 12
1134 #define FC_LoopbackON 13
1135 #define FC_LoopbackOFF 14
1136 #define FC_ClrIrqTable 15
1137 #define FC_SendXon 16
1138 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1139 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1140 #define FC_SetBreakIrq 19
1141 #define FC_SetLineIrq 20
1142 #define FC_SetFlowCtl 21
1143 #define FC_GenIrq 22
1144 #define FC_InCD180 23
1145 #define FC_OutCD180 24
1146 #define FC_InUARTreg 23
1147 #define FC_OutUARTreg 24
1148 #define FC_SetXonXoff 25
1149 #define FC_OutCD180CCR 26
1150 #define FC_ExtIQueue 27
1151 #define FC_ExtOQueue 28
1152 #define FC_ClrLineIrq 29
1153 #define FC_HWFlowCtl 30
1154 #define FC_GetClockRate 35
1155 #define FC_SetBaud 36
1156 #define FC_SetDataMode 41
1157 #define FC_GetCCSR 43
1158 #define FC_GetDataError 45
1159 #define FC_RxControl 50
1160 #define FC_ImmSend 51
1161 #define FC_SetXonState 52
1162 #define FC_SetXoffState 53
1163 #define FC_SetRxFIFOTrig 54
1164 #define FC_SetTxFIFOCnt 55
1165 #define FC_UnixRate 56
1166 #define FC_UnixResetTimer 57
1168 #define RxFIFOTrig1 0
1169 #define RxFIFOTrig4 1
1170 #define RxFIFOTrig8 2
1171 #define RxFIFOTrig14 3
1176 #define DRAM_global 0
1177 #define INT_data (DRAM_global + 0)
1178 #define Config_base (DRAM_global + 0x108)
1180 #define IRQindex (INT_data + 0)
1181 #define IRQpending (INT_data + 4)
1182 #define IRQtable (INT_data + 8)
1187 #define IntrRx 0x01 /* receiver data O.K. */
1188 #define IntrTx 0x02 /* transmit buffer empty */
1189 #define IntrFunc 0x04 /* function complete */
1190 #define IntrBreak 0x08 /* received break */
1191 #define IntrLine 0x10 /* line status change
1193 #define IntrIntr 0x20 /* received INTR code */
1194 #define IntrQuit 0x40 /* received QUIT code */
1195 #define IntrEOF 0x80 /* received EOF code */
1197 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1198 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1200 #define Magic_no (Config_base + 0)
1201 #define Card_model_no (Config_base + 2)
1202 #define Total_ports (Config_base + 4)
1203 #define Module_cnt (Config_base + 8)
1204 #define Module_no (Config_base + 10)
1205 #define Timer_10ms (Config_base + 14)
1206 #define Disable_IRQ (Config_base + 20)
1207 #define TMS320_PORT1 (Config_base + 22)
1208 #define TMS320_PORT2 (Config_base + 24)
1209 #define TMS320_CLOCK (Config_base + 26)
1212 * DATA BUFFER in DRAM
1214 #define Extern_table 0x400 /* Base address of the external table
1215 (24 words * 64) total 3K bytes
1216 (24 words * 128) total 6K bytes */
1217 #define Extern_size 0x60 /* 96 bytes */
1218 #define RXrptr 0x00 /* read pointer for RX buffer */
1219 #define RXwptr 0x02 /* write pointer for RX buffer */
1220 #define TXrptr 0x04 /* read pointer for TX buffer */
1221 #define TXwptr 0x06 /* write pointer for TX buffer */
1222 #define HostStat 0x08 /* IRQ flag and general flag */
1223 #define FlagStat 0x0A
1224 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1225 /* x x x x | | | | */
1226 /* | | | + CTS flow */
1227 /* | | +--- RTS flow */
1228 /* | +------ TX Xon/Xoff */
1229 /* +--------- RX Xon/Xoff */
1230 #define Break_cnt 0x0E /* received break count */
1231 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1232 #define RX_mask 0x12
1233 #define TX_mask 0x14
1234 #define Ofs_rxb 0x16
1235 #define Ofs_txb 0x18
1236 #define Page_rxb 0x1A
1237 #define Page_txb 0x1C
1238 #define EndPage_rxb 0x1E
1239 #define EndPage_txb 0x20
1240 #define Data_error 0x22
1241 #define RxTrigger 0x28
1242 #define TxTrigger 0x2a
1244 #define rRXwptr 0x34
1245 #define Low_water 0x36
1247 #define FuncCode 0x40
1248 #define FuncArg 0x42
1249 #define FuncArg1 0x44
1251 #define C218rx_size 0x2000 /* 8K bytes */
1252 #define C218tx_size 0x8000 /* 32K bytes */
1254 #define C218rx_mask (C218rx_size - 1)
1255 #define C218tx_mask (C218tx_size - 1)
1257 #define C320p8rx_size 0x2000
1258 #define C320p8tx_size 0x8000
1259 #define C320p8rx_mask (C320p8rx_size - 1)
1260 #define C320p8tx_mask (C320p8tx_size - 1)
1262 #define C320p16rx_size 0x2000
1263 #define C320p16tx_size 0x4000
1264 #define C320p16rx_mask (C320p16rx_size - 1)
1265 #define C320p16tx_mask (C320p16tx_size - 1)
1267 #define C320p24rx_size 0x2000
1268 #define C320p24tx_size 0x2000
1269 #define C320p24rx_mask (C320p24rx_size - 1)
1270 #define C320p24tx_mask (C320p24tx_size - 1)
1272 #define C320p32rx_size 0x1000
1273 #define C320p32tx_size 0x1000
1274 #define C320p32rx_mask (C320p32rx_size - 1)
1275 #define C320p32tx_mask (C320p32tx_size - 1)
1277 #define Page_size 0x2000
1278 #define Page_mask (Page_size - 1)
1279 #define C218rx_spage 3
1280 #define C218tx_spage 4
1281 #define C218rx_pageno 1
1282 #define C218tx_pageno 4
1283 #define C218buf_pageno 5
1285 #define C320p8rx_spage 3
1286 #define C320p8tx_spage 4
1287 #define C320p8rx_pgno 1
1288 #define C320p8tx_pgno 4
1289 #define C320p8buf_pgno 5
1291 #define C320p16rx_spage 3
1292 #define C320p16tx_spage 4
1293 #define C320p16rx_pgno 1
1294 #define C320p16tx_pgno 2
1295 #define C320p16buf_pgno 3
1297 #define C320p24rx_spage 3
1298 #define C320p24tx_spage 4
1299 #define C320p24rx_pgno 1
1300 #define C320p24tx_pgno 1
1301 #define C320p24buf_pgno 2
1303 #define C320p32rx_spage 3
1304 #define C320p32tx_ofs C320p32rx_size
1305 #define C320p32tx_spage 3
1306 #define C320p32buf_pgno 1
1311 #define WakeupRx 0x01
1312 #define WakeupTx 0x02
1313 #define WakeupBreak 0x08
1314 #define WakeupLine 0x10
1315 #define WakeupIntr 0x20
1316 #define WakeupQuit 0x40
1317 #define WakeupEOF 0x80 /* used in VTIME control */
1318 #define WakeupRxTrigger 0x100
1319 #define WakeupTxTrigger 0x200
1323 #define Rx_over 0x01
1324 #define Xoff_state 0x02
1325 #define Tx_flowOff 0x04
1326 #define Tx_enable 0x08
1327 #define CTS_state 0x10
1328 #define DSR_state 0x20
1329 #define DCD_state 0x80
1333 #define CTS_FlowCtl 1
1334 #define RTS_FlowCtl 2
1335 #define Tx_FlowCtl 4
1336 #define Rx_FlowCtl 8
1337 #define IXM_IXANY 0x10
1339 #define LowWater 128
1347 /* mode definition */
1353 #define MX_STOP1 0x00
1354 #define MX_STOP15 0x04
1355 #define MX_STOP2 0x08
1357 #define MX_PARNONE 0x00
1358 #define MX_PAREVEN 0x40
1359 #define MX_PARODD 0xC0
1367 int rxcnt
[MAX_PORTS
];
1368 int txcnt
[MAX_PORTS
];
1371 #define DCD_changed 0x01
1372 #define DCD_oldstate 0x80
1374 static unsigned char moxaBuff
[10240];
1375 static int moxaLowWaterChk
;
1376 static int moxaCard
;
1377 static struct mon_str moxaLog
;
1378 static int moxaFuncTout
= HZ
/ 2;
1380 static void moxadelay(int);
1381 static void moxafunc(void __iomem
*, int, ushort
);
1382 static void wait_finish(void __iomem
*);
1383 static void low_water_check(void __iomem
*);
1384 static int moxaloadbios(int, unsigned char __user
*, int);
1385 static int moxafindcard(int);
1386 static int moxaload320b(int, unsigned char __user
*, int);
1387 static int moxaloadcode(int, unsigned char __user
*, int);
1388 static int moxaloadc218(int, void __iomem
*, int);
1389 static int moxaloadc320(int, void __iomem
*, int, int *);
1391 /*****************************************************************************
1392 * Driver level functions: *
1393 * 1. MoxaDriverInit(void); *
1394 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1395 * 3. MoxaDriverPoll(void); *
1396 *****************************************************************************/
1397 void MoxaDriverInit(void)
1399 struct moxa_port
*p
;
1402 moxaFuncTout
= HZ
/ 2; /* 500 mini-seconds */
1405 moxaLowWaterChk
= 0;
1406 for (i
= 0; i
< MAX_PORTS
; i
++) {
1411 moxaLog
.rxcnt
[i
] = 0;
1412 moxaLog
.txcnt
[i
] = 0;
1417 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1418 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1419 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1420 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1421 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1422 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1423 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1424 #define MOXA_GETDATACOUNT (MOXA + 23)
1425 #define MOXA_GET_IOQUEUE (MOXA + 27)
1426 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1427 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1428 #define MOXA_GET_MAJOR (MOXA + 63)
1429 #define MOXA_GET_CUMAJOR (MOXA + 64)
1430 #define MOXA_GETMSTATUS (MOXA + 65)
1438 static struct dl_str dltmp
;
1440 void MoxaPortFlushData(int port
, int mode
)
1442 void __iomem
*ofsAddr
;
1443 if ((mode
< 0) || (mode
> 2))
1445 ofsAddr
= moxa_ports
[port
].tableAddr
;
1446 moxafunc(ofsAddr
, FC_FlushQueue
, mode
);
1448 moxa_ports
[port
].lowChkFlag
= 0;
1449 low_water_check(ofsAddr
);
1453 int MoxaDriverIoctl(unsigned int cmd
, unsigned long arg
, int port
)
1457 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1458 void __user
*argp
= (void __user
*)arg
;
1460 if (port
== MAX_PORTS
) {
1461 if ((cmd
!= MOXA_GET_CONF
) && (cmd
!= MOXA_INIT_DRIVER
) &&
1462 (cmd
!= MOXA_LOAD_BIOS
) && (cmd
!= MOXA_FIND_BOARD
) && (cmd
!= MOXA_LOAD_C320B
) &&
1463 (cmd
!= MOXA_LOAD_CODE
) && (cmd
!= MOXA_GETDATACOUNT
) &&
1464 (cmd
!= MOXA_GET_IOQUEUE
) && (cmd
!= MOXA_GET_MAJOR
) &&
1465 (cmd
!= MOXA_GET_CUMAJOR
) && (cmd
!= MOXA_GETMSTATUS
))
1470 if(copy_to_user(argp
, &moxa_boards
, MAX_BOARDS
*
1471 sizeof(struct moxa_board_conf
)))
1474 case MOXA_INIT_DRIVER
:
1475 if ((int) arg
== 0x404)
1478 case MOXA_GETDATACOUNT
:
1479 moxaLog
.tick
= jiffies
;
1480 if(copy_to_user(argp
, &moxaLog
, sizeof(struct mon_str
)))
1483 case MOXA_FLUSH_QUEUE
:
1484 MoxaPortFlushData(port
, arg
);
1486 case MOXA_GET_IOQUEUE
: {
1487 struct moxaq_str __user
*argm
= argp
;
1488 struct moxaq_str tmp
;
1490 for (i
= 0; i
< MAX_PORTS
; i
++, argm
++) {
1491 memset(&tmp
, 0, sizeof(tmp
));
1492 if (moxa_ports
[i
].chkPort
) {
1493 tmp
.inq
= MoxaPortRxQueue(i
);
1494 tmp
.outq
= MoxaPortTxQueue(i
);
1496 if (copy_to_user(argm
, &tmp
, sizeof(tmp
)))
1500 } case MOXA_GET_OQUEUE
:
1501 i
= MoxaPortTxQueue(port
);
1502 return put_user(i
, (unsigned long __user
*)argp
);
1503 case MOXA_GET_IQUEUE
:
1504 i
= MoxaPortRxQueue(port
);
1505 return put_user(i
, (unsigned long __user
*)argp
);
1506 case MOXA_GET_MAJOR
:
1507 if(copy_to_user(argp
, &ttymajor
, sizeof(int)))
1510 case MOXA_GET_CUMAJOR
:
1512 if(copy_to_user(argp
, &i
, sizeof(int)))
1515 case MOXA_GETMSTATUS
: {
1516 struct mxser_mstatus __user
*argm
= argp
;
1517 struct mxser_mstatus tmp
;
1518 struct moxa_port
*p
;
1520 for (i
= 0; i
< MAX_PORTS
; i
++, argm
++) {
1522 memset(&tmp
, 0, sizeof(tmp
));
1526 status
= MoxaPortLineStatus(p
->port
);
1535 if (!p
->tty
|| !p
->tty
->termios
)
1536 tmp
.cflag
= p
->cflag
;
1538 tmp
.cflag
= p
->tty
->termios
->c_cflag
;
1540 if (copy_to_user(argm
, &tmp
, sizeof(tmp
)))
1545 return (-ENOIOCTLCMD
);
1546 case MOXA_LOAD_BIOS
:
1547 case MOXA_FIND_BOARD
:
1548 case MOXA_LOAD_C320B
:
1549 case MOXA_LOAD_CODE
:
1550 if (!capable(CAP_SYS_RAWIO
))
1555 if(copy_from_user(&dltmp
, argp
, sizeof(struct dl_str
)))
1557 if(dltmp
.cardno
< 0 || dltmp
.cardno
>= MAX_BOARDS
)
1562 case MOXA_LOAD_BIOS
:
1563 i
= moxaloadbios(dltmp
.cardno
, dltmp
.buf
, dltmp
.len
);
1565 case MOXA_FIND_BOARD
:
1566 return moxafindcard(dltmp
.cardno
);
1567 case MOXA_LOAD_C320B
:
1568 moxaload320b(dltmp
.cardno
, dltmp
.buf
, dltmp
.len
);
1569 default: /* to keep gcc happy */
1571 case MOXA_LOAD_CODE
:
1572 i
= moxaloadcode(dltmp
.cardno
, dltmp
.buf
, dltmp
.len
);
1580 int MoxaDriverPoll(void)
1582 struct moxa_board_conf
*brd
;
1583 register ushort temp
;
1585 void __iomem
*ofsAddr
;
1591 for (card
= 0; card
< MAX_BOARDS
; card
++) {
1592 brd
= &moxa_boards
[card
];
1593 if (brd
->loadstat
== 0)
1595 if ((ports
= brd
->numPorts
) == 0)
1597 if (readb(brd
->intPend
) == 0xff) {
1598 ip
= brd
->intTable
+ readb(brd
->intNdx
);
1599 p
= card
* MAX_PORTS_PER_BOARD
;
1601 for (port
= 0; port
< ports
; port
+= 2, p
++) {
1602 if ((temp
= readw(ip
+ port
)) != 0) {
1603 writew(0, ip
+ port
);
1604 ofsAddr
= moxa_ports
[p
].tableAddr
;
1606 writew(readw(ofsAddr
+ HostStat
) & ~WakeupTx
, ofsAddr
+ HostStat
);
1607 if (temp
& IntrBreak
) {
1608 moxa_ports
[p
].breakCnt
++;
1610 if (temp
& IntrLine
) {
1611 if (readb(ofsAddr
+ FlagStat
) & DCD_state
) {
1612 if ((moxa_ports
[p
].DCDState
& DCD_oldstate
) == 0)
1613 moxa_ports
[p
].DCDState
= (DCD_oldstate
|
1616 if (moxa_ports
[p
].DCDState
& DCD_oldstate
)
1617 moxa_ports
[p
].DCDState
= DCD_changed
;
1622 writeb(0, brd
->intPend
);
1624 if (moxaLowWaterChk
) {
1625 p
= card
* MAX_PORTS_PER_BOARD
;
1626 for (port
= 0; port
< ports
; port
++, p
++) {
1627 if (moxa_ports
[p
].lowChkFlag
) {
1628 moxa_ports
[p
].lowChkFlag
= 0;
1629 ofsAddr
= moxa_ports
[p
].tableAddr
;
1630 low_water_check(ofsAddr
);
1635 moxaLowWaterChk
= 0;
1639 /*****************************************************************************
1640 * Card level function: *
1641 * 1. MoxaPortsOfCard(int cardno); *
1642 *****************************************************************************/
1643 int MoxaPortsOfCard(int cardno
)
1646 if (moxa_boards
[cardno
].boardType
== 0)
1648 return (moxa_boards
[cardno
].numPorts
);
1651 /*****************************************************************************
1652 * Port level functions: *
1653 * 1. MoxaPortIsValid(int port); *
1654 * 2. MoxaPortEnable(int port); *
1655 * 3. MoxaPortDisable(int port); *
1656 * 4. MoxaPortGetMaxBaud(int port); *
1657 * 6. MoxaPortSetBaud(int port, long baud); *
1658 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1659 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1660 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1661 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1662 * 12. MoxaPortLineStatus(int port); *
1663 * 13. MoxaPortDCDChange(int port); *
1664 * 14. MoxaPortDCDON(int port); *
1665 * 15. MoxaPortFlushData(int port, int mode); *
1666 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1667 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1668 * 20. MoxaPortTxQueue(int port); *
1669 * 21. MoxaPortTxFree(int port); *
1670 * 22. MoxaPortRxQueue(int port); *
1671 * 24. MoxaPortTxDisable(int port); *
1672 * 25. MoxaPortTxEnable(int port); *
1673 * 27. MoxaPortResetBrkCnt(int port); *
1674 * 30. MoxaPortSendBreak(int port, int ticks); *
1675 *****************************************************************************/
1677 * Moxa Port Number Description:
1679 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1680 * the port number using in MOXA driver functions will be 0 to 31 for
1681 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1682 * to 127 for fourth. For example, if you setup three MOXA boards,
1683 * first board is C218, second board is C320-16 and third board is
1684 * C320-32. The port number of first board (C218 - 8 ports) is from
1685 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1686 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1687 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1688 * 127 will be invalid.
1691 * Moxa Functions Description:
1693 * Function 1: Driver initialization routine, this routine must be
1694 * called when initialized driver.
1696 * void MoxaDriverInit();
1699 * Function 2: Moxa driver private IOCTL command processing.
1701 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1703 * unsigned int cmd : IOCTL command
1704 * unsigned long arg : IOCTL argument
1705 * int port : port number (0 - 127)
1712 * Function 3: Moxa driver polling process routine.
1714 * int MoxaDriverPoll(void);
1716 * return: 0 ; polling O.K.
1717 * -1 : no any Moxa card.
1720 * Function 4: Get the ports of this card.
1722 * int MoxaPortsOfCard(int cardno);
1724 * int cardno : card number (0 - 3)
1726 * return: 0 : this card is invalid
1730 * Function 5: Check this port is valid or invalid
1732 * int MoxaPortIsValid(int port);
1733 * int port : port number (0 - 127, ref port description)
1735 * return: 0 : this port is invalid
1736 * 1 : this port is valid
1739 * Function 6: Enable this port to start Tx/Rx data.
1741 * void MoxaPortEnable(int port);
1742 * int port : port number (0 - 127)
1745 * Function 7: Disable this port
1747 * void MoxaPortDisable(int port);
1748 * int port : port number (0 - 127)
1751 * Function 8: Get the maximun available baud rate of this port.
1753 * long MoxaPortGetMaxBaud(int port);
1754 * int port : port number (0 - 127)
1756 * return: 0 : this port is invalid
1757 * 38400/57600/115200 bps
1760 * Function 10: Setting baud rate of this port.
1762 * long MoxaPortSetBaud(int port, long baud);
1763 * int port : port number (0 - 127)
1764 * long baud : baud rate (50 - 115200)
1766 * return: 0 : this port is invalid or baud < 50
1767 * 50 - 115200 : the real baud rate set to the port, if
1768 * the argument baud is large than maximun
1769 * available baud rate, the real setting
1770 * baud rate will be the maximun baud rate.
1773 * Function 12: Configure the port.
1775 * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud);
1776 * int port : port number (0 - 127)
1777 * struct ktermios * termio : termio structure pointer
1778 * speed_t baud : baud rate
1780 * return: -1 : this port is invalid or termio == NULL
1784 * Function 13: Get the DTR/RTS state of this port.
1786 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1787 * int port : port number (0 - 127)
1788 * int * dtrState : pointer to INT to receive the current DTR
1789 * state. (if NULL, this function will not
1790 * write to this address)
1791 * int * rtsState : pointer to INT to receive the current RTS
1792 * state. (if NULL, this function will not
1793 * write to this address)
1795 * return: -1 : this port is invalid
1799 * Function 14: Setting the DTR/RTS output state of this port.
1801 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1802 * int port : port number (0 - 127)
1803 * int dtrState : DTR output state (0: off, 1: on)
1804 * int rtsState : RTS output state (0: off, 1: on)
1807 * Function 15: Setting the flow control of this port.
1809 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1810 * int txFlow,int xany);
1811 * int port : port number (0 - 127)
1812 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1813 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1814 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1815 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1816 * int xany : S/W XANY flow control (0: no, 1: yes)
1819 * Function 16: Get ths line status of this port
1821 * int MoxaPortLineStatus(int port);
1822 * int port : port number (0 - 127)
1824 * return: Bit 0 - CTS state (0: off, 1: on)
1825 * Bit 1 - DSR state (0: off, 1: on)
1826 * Bit 2 - DCD state (0: off, 1: on)
1829 * Function 17: Check the DCD state has changed since the last read
1832 * int MoxaPortDCDChange(int port);
1833 * int port : port number (0 - 127)
1835 * return: 0 : no changed
1836 * 1 : DCD has changed
1839 * Function 18: Check ths current DCD state is ON or not.
1841 * int MoxaPortDCDON(int port);
1842 * int port : port number (0 - 127)
1844 * return: 0 : DCD off
1848 * Function 19: Flush the Rx/Tx buffer data of this port.
1850 * void MoxaPortFlushData(int port, int mode);
1851 * int port : port number (0 - 127)
1853 * 0 : flush the Rx buffer
1854 * 1 : flush the Tx buffer
1855 * 2 : flush the Rx and Tx buffer
1858 * Function 20: Write data.
1860 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
1861 * int port : port number (0 - 127)
1862 * unsigned char * buffer : pointer to write data buffer.
1863 * int length : write data length
1865 * return: 0 - length : real write data length
1868 * Function 21: Read data.
1870 * int MoxaPortReadData(int port, struct tty_struct *tty);
1871 * int port : port number (0 - 127)
1872 * struct tty_struct *tty : tty for data
1874 * return: 0 - length : real read data length
1877 * Function 24: Get the Tx buffer current queued data bytes
1879 * int MoxaPortTxQueue(int port);
1880 * int port : port number (0 - 127)
1882 * return: .. : Tx buffer current queued data bytes
1885 * Function 25: Get the Tx buffer current free space
1887 * int MoxaPortTxFree(int port);
1888 * int port : port number (0 - 127)
1890 * return: .. : Tx buffer current free space
1893 * Function 26: Get the Rx buffer current queued data bytes
1895 * int MoxaPortRxQueue(int port);
1896 * int port : port number (0 - 127)
1898 * return: .. : Rx buffer current queued data bytes
1901 * Function 28: Disable port data transmission.
1903 * void MoxaPortTxDisable(int port);
1904 * int port : port number (0 - 127)
1907 * Function 29: Enable port data transmission.
1909 * void MoxaPortTxEnable(int port);
1910 * int port : port number (0 - 127)
1913 * Function 31: Get the received BREAK signal count and reset it.
1915 * int MoxaPortResetBrkCnt(int port);
1916 * int port : port number (0 - 127)
1918 * return: 0 - .. : BREAK signal count
1921 * Function 34: Send out a BREAK signal.
1923 * void MoxaPortSendBreak(int port, int ms100);
1924 * int port : port number (0 - 127)
1925 * int ms100 : break signal time interval.
1926 * unit: 100 mini-second. if ms100 == 0, it will
1927 * send out a about 250 ms BREAK signal.
1930 int MoxaPortIsValid(int port
)
1935 if (moxa_ports
[port
].chkPort
== 0)
1940 void MoxaPortEnable(int port
)
1942 void __iomem
*ofsAddr
;
1943 int MoxaPortLineStatus(int);
1944 short lowwater
= 512;
1946 ofsAddr
= moxa_ports
[port
].tableAddr
;
1947 writew(lowwater
, ofsAddr
+ Low_water
);
1948 moxa_ports
[port
].breakCnt
= 0;
1949 if ((moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_ISA
) ||
1950 (moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_PCI
)) {
1951 moxafunc(ofsAddr
, FC_SetBreakIrq
, 0);
1953 writew(readw(ofsAddr
+ HostStat
) | WakeupBreak
, ofsAddr
+ HostStat
);
1956 moxafunc(ofsAddr
, FC_SetLineIrq
, Magic_code
);
1957 moxafunc(ofsAddr
, FC_FlushQueue
, 2);
1959 moxafunc(ofsAddr
, FC_EnableCH
, Magic_code
);
1960 MoxaPortLineStatus(port
);
1963 void MoxaPortDisable(int port
)
1965 void __iomem
*ofsAddr
= moxa_ports
[port
].tableAddr
;
1967 moxafunc(ofsAddr
, FC_SetFlowCtl
, 0); /* disable flow control */
1968 moxafunc(ofsAddr
, FC_ClrLineIrq
, Magic_code
);
1969 writew(0, ofsAddr
+ HostStat
);
1970 moxafunc(ofsAddr
, FC_DisableCH
, Magic_code
);
1973 long MoxaPortGetMaxBaud(int port
)
1975 if ((moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_ISA
) ||
1976 (moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_PCI
))
1983 long MoxaPortSetBaud(int port
, long baud
)
1985 void __iomem
*ofsAddr
;
1989 if ((baud
< 50L) || ((max
= MoxaPortGetMaxBaud(port
)) == 0))
1991 ofsAddr
= moxa_ports
[port
].tableAddr
;
1995 clock
= 614400L; /* for 9.8304 Mhz : max. 38400 bps */
1996 else if (max
== 57600L)
1997 clock
= 691200L; /* for 11.0592 Mhz : max. 57600 bps */
1999 clock
= 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2001 moxafunc(ofsAddr
, FC_SetBaud
, val
);
2003 moxa_ports
[port
].curBaud
= baud
;
2007 int MoxaPortSetTermio(int port
, struct ktermios
*termio
, speed_t baud
)
2009 void __iomem
*ofsAddr
;
2013 if (moxa_ports
[port
].chkPort
== 0 || termio
== 0)
2015 ofsAddr
= moxa_ports
[port
].tableAddr
;
2016 cflag
= termio
->c_cflag
; /* termio->c_cflag */
2018 mode
= termio
->c_cflag
& CSIZE
;
2021 else if (mode
== CS6
)
2023 else if (mode
== CS7
)
2025 else if (mode
== CS8
)
2028 if (termio
->c_cflag
& CSTOPB
) {
2036 if (termio
->c_cflag
& PARENB
) {
2037 if (termio
->c_cflag
& PARODD
)
2044 moxafunc(ofsAddr
, FC_SetDataMode
, (ushort
) mode
);
2046 if ((moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_ISA
) ||
2047 (moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_PCI
)) {
2048 if (baud
>= 921600L)
2051 MoxaPortSetBaud(port
, baud
);
2053 if (termio
->c_iflag
& (IXON
| IXOFF
| IXANY
)) {
2054 writeb(termio
->c_cc
[VSTART
], ofsAddr
+ FuncArg
);
2055 writeb(termio
->c_cc
[VSTOP
], ofsAddr
+ FuncArg1
);
2056 writeb(FC_SetXonXoff
, ofsAddr
+ FuncCode
);
2057 wait_finish(ofsAddr
);
2063 int MoxaPortGetLineOut(int port
, int *dtrState
, int *rtsState
)
2066 if (!MoxaPortIsValid(port
))
2069 if (moxa_ports
[port
].lineCtrl
& DTR_ON
)
2075 if (moxa_ports
[port
].lineCtrl
& RTS_ON
)
2083 void MoxaPortLineCtrl(int port
, int dtr
, int rts
)
2085 void __iomem
*ofsAddr
;
2088 ofsAddr
= moxa_ports
[port
].tableAddr
;
2094 moxa_ports
[port
].lineCtrl
= mode
;
2095 moxafunc(ofsAddr
, FC_LineControl
, mode
);
2098 void MoxaPortFlowCtrl(int port
, int rts
, int cts
, int txflow
, int rxflow
, int txany
)
2100 void __iomem
*ofsAddr
;
2103 ofsAddr
= moxa_ports
[port
].tableAddr
;
2106 mode
|= RTS_FlowCtl
;
2108 mode
|= CTS_FlowCtl
;
2115 moxafunc(ofsAddr
, FC_SetFlowCtl
, mode
);
2118 int MoxaPortLineStatus(int port
)
2120 void __iomem
*ofsAddr
;
2123 ofsAddr
= moxa_ports
[port
].tableAddr
;
2124 if ((moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_ISA
) ||
2125 (moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_PCI
)) {
2126 moxafunc(ofsAddr
, FC_LineStatus
, 0);
2127 val
= readw(ofsAddr
+ FuncArg
);
2129 val
= readw(ofsAddr
+ FlagStat
) >> 4;
2134 if ((moxa_ports
[port
].DCDState
& DCD_oldstate
) == 0)
2135 moxa_ports
[port
].DCDState
= (DCD_oldstate
| DCD_changed
);
2137 if (moxa_ports
[port
].DCDState
& DCD_oldstate
)
2138 moxa_ports
[port
].DCDState
= DCD_changed
;
2144 int MoxaPortDCDChange(int port
)
2148 if (moxa_ports
[port
].chkPort
== 0)
2150 n
= moxa_ports
[port
].DCDState
;
2151 moxa_ports
[port
].DCDState
&= ~DCD_changed
;
2156 int MoxaPortDCDON(int port
)
2160 if (moxa_ports
[port
].chkPort
== 0)
2162 if (moxa_ports
[port
].DCDState
& DCD_oldstate
)
2169 int MoxaPortWriteData(int port
, unsigned char * buffer
, int len
)
2174 ushort head
, tx_mask
, spage
, epage
;
2175 ushort pageno
, pageofs
, bufhead
;
2176 void __iomem
*baseAddr
, *ofsAddr
, *ofs
;
2178 ofsAddr
= moxa_ports
[port
].tableAddr
;
2179 baseAddr
= moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].basemem
;
2180 tx_mask
= readw(ofsAddr
+ TX_mask
);
2181 spage
= readw(ofsAddr
+ Page_txb
);
2182 epage
= readw(ofsAddr
+ EndPage_txb
);
2183 tail
= readw(ofsAddr
+ TXwptr
);
2184 head
= readw(ofsAddr
+ TXrptr
);
2185 c
= (head
> tail
) ? (head
- tail
- 1)
2186 : (head
- tail
+ tx_mask
);
2189 moxaLog
.txcnt
[port
] += c
;
2191 if (spage
== epage
) {
2192 bufhead
= readw(ofsAddr
+ Ofs_txb
);
2193 writew(spage
, baseAddr
+ Control_reg
);
2196 len
= head
- tail
- 1;
2198 len
= tx_mask
+ 1 - tail
;
2199 len
= (c
> len
) ? len
: c
;
2200 ofs
= baseAddr
+ DynPage_addr
+ bufhead
+ tail
;
2201 for (i
= 0; i
< len
; i
++)
2202 writeb(*buffer
++, ofs
+ i
);
2203 tail
= (tail
+ len
) & tx_mask
;
2206 writew(tail
, ofsAddr
+ TXwptr
);
2209 pageno
= spage
+ (tail
>> 13);
2210 pageofs
= tail
& Page_mask
;
2212 cnt
= Page_size
- pageofs
;
2216 writeb(pageno
, baseAddr
+ Control_reg
);
2217 ofs
= baseAddr
+ DynPage_addr
+ pageofs
;
2218 for (i
= 0; i
< cnt
; i
++)
2219 writeb(*buffer
++, ofs
+ i
);
2221 writew((tail
+ len
) & tx_mask
, ofsAddr
+ TXwptr
);
2224 if (++pageno
== epage
)
2229 writeb(1, ofsAddr
+ CD180TXirq
); /* start to send */
2233 int MoxaPortReadData(int port
, struct tty_struct
*tty
)
2235 register ushort head
, pageofs
;
2236 int i
, count
, cnt
, len
, total
, remain
;
2237 ushort tail
, rx_mask
, spage
, epage
;
2238 ushort pageno
, bufhead
;
2239 void __iomem
*baseAddr
, *ofsAddr
, *ofs
;
2241 ofsAddr
= moxa_ports
[port
].tableAddr
;
2242 baseAddr
= moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].basemem
;
2243 head
= readw(ofsAddr
+ RXrptr
);
2244 tail
= readw(ofsAddr
+ RXwptr
);
2245 rx_mask
= readw(ofsAddr
+ RX_mask
);
2246 spage
= readw(ofsAddr
+ Page_rxb
);
2247 epage
= readw(ofsAddr
+ EndPage_rxb
);
2248 count
= (tail
>= head
) ? (tail
- head
)
2249 : (tail
- head
+ rx_mask
+ 1);
2254 remain
= count
- total
;
2255 moxaLog
.rxcnt
[port
] += total
;
2257 if (spage
== epage
) {
2258 bufhead
= readw(ofsAddr
+ Ofs_rxb
);
2259 writew(spage
, baseAddr
+ Control_reg
);
2264 len
= rx_mask
+ 1 - head
;
2265 len
= (count
> len
) ? len
: count
;
2266 ofs
= baseAddr
+ DynPage_addr
+ bufhead
+ head
;
2267 for (i
= 0; i
< len
; i
++)
2268 tty_insert_flip_char(tty
, readb(ofs
+ i
), TTY_NORMAL
);
2269 head
= (head
+ len
) & rx_mask
;
2272 writew(head
, ofsAddr
+ RXrptr
);
2275 pageno
= spage
+ (head
>> 13);
2276 pageofs
= head
& Page_mask
;
2278 cnt
= Page_size
- pageofs
;
2282 writew(pageno
, baseAddr
+ Control_reg
);
2283 ofs
= baseAddr
+ DynPage_addr
+ pageofs
;
2284 for (i
= 0; i
< cnt
; i
++)
2285 tty_insert_flip_char(tty
, readb(ofs
+ i
), TTY_NORMAL
);
2287 writew((head
+ len
) & rx_mask
, ofsAddr
+ RXrptr
);
2290 if (++pageno
== epage
)
2295 if ((readb(ofsAddr
+ FlagStat
) & Xoff_state
) && (remain
< LowWater
)) {
2296 moxaLowWaterChk
= 1;
2297 moxa_ports
[port
].lowChkFlag
= 1;
2303 int MoxaPortTxQueue(int port
)
2305 void __iomem
*ofsAddr
;
2306 ushort rptr
, wptr
, mask
;
2309 ofsAddr
= moxa_ports
[port
].tableAddr
;
2310 rptr
= readw(ofsAddr
+ TXrptr
);
2311 wptr
= readw(ofsAddr
+ TXwptr
);
2312 mask
= readw(ofsAddr
+ TX_mask
);
2313 len
= (wptr
- rptr
) & mask
;
2317 int MoxaPortTxFree(int port
)
2319 void __iomem
*ofsAddr
;
2320 ushort rptr
, wptr
, mask
;
2323 ofsAddr
= moxa_ports
[port
].tableAddr
;
2324 rptr
= readw(ofsAddr
+ TXrptr
);
2325 wptr
= readw(ofsAddr
+ TXwptr
);
2326 mask
= readw(ofsAddr
+ TX_mask
);
2327 len
= mask
- ((wptr
- rptr
) & mask
);
2331 int MoxaPortRxQueue(int port
)
2333 void __iomem
*ofsAddr
;
2334 ushort rptr
, wptr
, mask
;
2337 ofsAddr
= moxa_ports
[port
].tableAddr
;
2338 rptr
= readw(ofsAddr
+ RXrptr
);
2339 wptr
= readw(ofsAddr
+ RXwptr
);
2340 mask
= readw(ofsAddr
+ RX_mask
);
2341 len
= (wptr
- rptr
) & mask
;
2346 void MoxaPortTxDisable(int port
)
2348 void __iomem
*ofsAddr
;
2350 ofsAddr
= moxa_ports
[port
].tableAddr
;
2351 moxafunc(ofsAddr
, FC_SetXoffState
, Magic_code
);
2354 void MoxaPortTxEnable(int port
)
2356 void __iomem
*ofsAddr
;
2358 ofsAddr
= moxa_ports
[port
].tableAddr
;
2359 moxafunc(ofsAddr
, FC_SetXonState
, Magic_code
);
2363 int MoxaPortResetBrkCnt(int port
)
2366 cnt
= moxa_ports
[port
].breakCnt
;
2367 moxa_ports
[port
].breakCnt
= 0;
2372 void MoxaPortSendBreak(int port
, int ms100
)
2374 void __iomem
*ofsAddr
;
2376 ofsAddr
= moxa_ports
[port
].tableAddr
;
2378 moxafunc(ofsAddr
, FC_SendBreak
, Magic_code
);
2379 moxadelay(ms100
* (HZ
/ 10));
2381 moxafunc(ofsAddr
, FC_SendBreak
, Magic_code
);
2382 moxadelay(HZ
/ 4); /* 250 ms */
2384 moxafunc(ofsAddr
, FC_StopBreak
, Magic_code
);
2387 static int moxa_get_serial_info(struct moxa_port
*info
,
2388 struct serial_struct __user
*retinfo
)
2390 struct serial_struct tmp
;
2392 memset(&tmp
, 0, sizeof(tmp
));
2393 tmp
.type
= info
->type
;
2394 tmp
.line
= info
->port
;
2397 tmp
.flags
= info
->asyncflags
;
2398 tmp
.baud_base
= 921600;
2399 tmp
.close_delay
= info
->close_delay
;
2400 tmp
.closing_wait
= info
->closing_wait
;
2401 tmp
.custom_divisor
= 0;
2403 if(copy_to_user(retinfo
, &tmp
, sizeof(*retinfo
)))
2409 static int moxa_set_serial_info(struct moxa_port
*info
,
2410 struct serial_struct __user
*new_info
)
2412 struct serial_struct new_serial
;
2414 if(copy_from_user(&new_serial
, new_info
, sizeof(new_serial
)))
2417 if ((new_serial
.irq
!= 0) ||
2418 (new_serial
.port
!= 0) ||
2419 // (new_serial.type != info->type) ||
2420 (new_serial
.custom_divisor
!= 0) ||
2421 (new_serial
.baud_base
!= 921600))
2424 if (!capable(CAP_SYS_ADMIN
)) {
2425 if (((new_serial
.flags
& ~ASYNC_USR_MASK
) !=
2426 (info
->asyncflags
& ~ASYNC_USR_MASK
)))
2429 info
->close_delay
= new_serial
.close_delay
* HZ
/ 100;
2430 info
->closing_wait
= new_serial
.closing_wait
* HZ
/ 100;
2433 new_serial
.flags
= (new_serial
.flags
& ~ASYNC_FLAGS
);
2434 new_serial
.flags
|= (info
->asyncflags
& ASYNC_FLAGS
);
2436 if (new_serial
.type
== PORT_16550A
) {
2437 MoxaSetFifo(info
->port
, 1);
2439 MoxaSetFifo(info
->port
, 0);
2442 info
->type
= new_serial
.type
;
2448 /*****************************************************************************
2449 * Static local functions: *
2450 *****************************************************************************/
2452 * moxadelay - delays a specified number ticks
2454 static void moxadelay(int tick
)
2456 unsigned long st
, et
;
2460 while (time_before(jiffies
, et
));
2463 static void moxafunc(void __iomem
*ofsAddr
, int cmd
, ushort arg
)
2466 writew(arg
, ofsAddr
+ FuncArg
);
2467 writew(cmd
, ofsAddr
+ FuncCode
);
2468 wait_finish(ofsAddr
);
2471 static void wait_finish(void __iomem
*ofsAddr
)
2476 while (readw(ofsAddr
+ FuncCode
) != 0) {
2478 if ((j
- i
) > moxaFuncTout
) {
2484 static void low_water_check(void __iomem
*ofsAddr
)
2487 ushort rptr
, wptr
, mask
;
2489 if (readb(ofsAddr
+ FlagStat
) & Xoff_state
) {
2490 rptr
= readw(ofsAddr
+ RXrptr
);
2491 wptr
= readw(ofsAddr
+ RXwptr
);
2492 mask
= readw(ofsAddr
+ RX_mask
);
2493 len
= (wptr
- rptr
) & mask
;
2494 if (len
<= Low_water
)
2495 moxafunc(ofsAddr
, FC_SendXon
, 0);
2499 static int moxaloadbios(int cardno
, unsigned char __user
*tmp
, int len
)
2501 void __iomem
*baseAddr
;
2504 if(copy_from_user(moxaBuff
, tmp
, len
))
2506 baseAddr
= moxa_boards
[cardno
].basemem
;
2507 writeb(HW_reset
, baseAddr
+ Control_reg
); /* reset */
2508 moxadelay(1); /* delay 10 ms */
2509 for (i
= 0; i
< 4096; i
++)
2510 writeb(0, baseAddr
+ i
); /* clear fix page */
2511 for (i
= 0; i
< len
; i
++)
2512 writeb(moxaBuff
[i
], baseAddr
+ i
); /* download BIOS */
2513 writeb(0, baseAddr
+ Control_reg
); /* restart */
2517 static int moxafindcard(int cardno
)
2519 void __iomem
*baseAddr
;
2522 baseAddr
= moxa_boards
[cardno
].basemem
;
2523 switch (moxa_boards
[cardno
].boardType
) {
2524 case MOXA_BOARD_C218_ISA
:
2525 case MOXA_BOARD_C218_PCI
:
2526 if ((tmp
= readw(baseAddr
+ C218_key
)) != C218_KeyCode
) {
2530 case MOXA_BOARD_CP204J
:
2531 if ((tmp
= readw(baseAddr
+ C218_key
)) != CP204J_KeyCode
) {
2536 if ((tmp
= readw(baseAddr
+ C320_key
)) != C320_KeyCode
) {
2539 if ((tmp
= readw(baseAddr
+ C320_status
)) != STS_init
) {
2546 static int moxaload320b(int cardno
, unsigned char __user
*tmp
, int len
)
2548 void __iomem
*baseAddr
;
2551 if(len
> sizeof(moxaBuff
))
2553 if(copy_from_user(moxaBuff
, tmp
, len
))
2555 baseAddr
= moxa_boards
[cardno
].basemem
;
2556 writew(len
- 7168 - 2, baseAddr
+ C320bapi_len
);
2557 writeb(1, baseAddr
+ Control_reg
); /* Select Page 1 */
2558 for (i
= 0; i
< 7168; i
++)
2559 writeb(moxaBuff
[i
], baseAddr
+ DynPage_addr
+ i
);
2560 writeb(2, baseAddr
+ Control_reg
); /* Select Page 2 */
2561 for (i
= 0; i
< (len
- 7168); i
++)
2562 writeb(moxaBuff
[i
+ 7168], baseAddr
+ DynPage_addr
+ i
);
2566 static int moxaloadcode(int cardno
, unsigned char __user
*tmp
, int len
)
2568 void __iomem
*baseAddr
, *ofsAddr
;
2569 int retval
, port
, i
;
2571 if(copy_from_user(moxaBuff
, tmp
, len
))
2573 baseAddr
= moxa_boards
[cardno
].basemem
;
2574 switch (moxa_boards
[cardno
].boardType
) {
2575 case MOXA_BOARD_C218_ISA
:
2576 case MOXA_BOARD_C218_PCI
:
2577 case MOXA_BOARD_CP204J
:
2578 retval
= moxaloadc218(cardno
, baseAddr
, len
);
2581 port
= cardno
* MAX_PORTS_PER_BOARD
;
2582 for (i
= 0; i
< moxa_boards
[cardno
].numPorts
; i
++, port
++) {
2583 struct moxa_port
*p
= &moxa_ports
[port
];
2588 p
->tableAddr
= baseAddr
+ Extern_table
+ Extern_size
* i
;
2589 ofsAddr
= p
->tableAddr
;
2590 writew(C218rx_mask
, ofsAddr
+ RX_mask
);
2591 writew(C218tx_mask
, ofsAddr
+ TX_mask
);
2592 writew(C218rx_spage
+ i
* C218buf_pageno
, ofsAddr
+ Page_rxb
);
2593 writew(readw(ofsAddr
+ Page_rxb
) + C218rx_pageno
, ofsAddr
+ EndPage_rxb
);
2595 writew(C218tx_spage
+ i
* C218buf_pageno
, ofsAddr
+ Page_txb
);
2596 writew(readw(ofsAddr
+ Page_txb
) + C218tx_pageno
, ofsAddr
+ EndPage_txb
);
2601 retval
= moxaloadc320(cardno
, baseAddr
, len
,
2602 &moxa_boards
[cardno
].numPorts
);
2605 port
= cardno
* MAX_PORTS_PER_BOARD
;
2606 for (i
= 0; i
< moxa_boards
[cardno
].numPorts
; i
++, port
++) {
2607 struct moxa_port
*p
= &moxa_ports
[port
];
2612 p
->tableAddr
= baseAddr
+ Extern_table
+ Extern_size
* i
;
2613 ofsAddr
= p
->tableAddr
;
2614 if (moxa_boards
[cardno
].numPorts
== 8) {
2615 writew(C320p8rx_mask
, ofsAddr
+ RX_mask
);
2616 writew(C320p8tx_mask
, ofsAddr
+ TX_mask
);
2617 writew(C320p8rx_spage
+ i
* C320p8buf_pgno
, ofsAddr
+ Page_rxb
);
2618 writew(readw(ofsAddr
+ Page_rxb
) + C320p8rx_pgno
, ofsAddr
+ EndPage_rxb
);
2619 writew(C320p8tx_spage
+ i
* C320p8buf_pgno
, ofsAddr
+ Page_txb
);
2620 writew(readw(ofsAddr
+ Page_txb
) + C320p8tx_pgno
, ofsAddr
+ EndPage_txb
);
2622 } else if (moxa_boards
[cardno
].numPorts
== 16) {
2623 writew(C320p16rx_mask
, ofsAddr
+ RX_mask
);
2624 writew(C320p16tx_mask
, ofsAddr
+ TX_mask
);
2625 writew(C320p16rx_spage
+ i
* C320p16buf_pgno
, ofsAddr
+ Page_rxb
);
2626 writew(readw(ofsAddr
+ Page_rxb
) + C320p16rx_pgno
, ofsAddr
+ EndPage_rxb
);
2627 writew(C320p16tx_spage
+ i
* C320p16buf_pgno
, ofsAddr
+ Page_txb
);
2628 writew(readw(ofsAddr
+ Page_txb
) + C320p16tx_pgno
, ofsAddr
+ EndPage_txb
);
2630 } else if (moxa_boards
[cardno
].numPorts
== 24) {
2631 writew(C320p24rx_mask
, ofsAddr
+ RX_mask
);
2632 writew(C320p24tx_mask
, ofsAddr
+ TX_mask
);
2633 writew(C320p24rx_spage
+ i
* C320p24buf_pgno
, ofsAddr
+ Page_rxb
);
2634 writew(readw(ofsAddr
+ Page_rxb
) + C320p24rx_pgno
, ofsAddr
+ EndPage_rxb
);
2635 writew(C320p24tx_spage
+ i
* C320p24buf_pgno
, ofsAddr
+ Page_txb
);
2636 writew(readw(ofsAddr
+ Page_txb
), ofsAddr
+ EndPage_txb
);
2637 } else if (moxa_boards
[cardno
].numPorts
== 32) {
2638 writew(C320p32rx_mask
, ofsAddr
+ RX_mask
);
2639 writew(C320p32tx_mask
, ofsAddr
+ TX_mask
);
2640 writew(C320p32tx_ofs
, ofsAddr
+ Ofs_txb
);
2641 writew(C320p32rx_spage
+ i
* C320p32buf_pgno
, ofsAddr
+ Page_rxb
);
2642 writew(readb(ofsAddr
+ Page_rxb
), ofsAddr
+ EndPage_rxb
);
2643 writew(C320p32tx_spage
+ i
* C320p32buf_pgno
, ofsAddr
+ Page_txb
);
2644 writew(readw(ofsAddr
+ Page_txb
), ofsAddr
+ EndPage_txb
);
2649 moxa_boards
[cardno
].loadstat
= 1;
2653 static int moxaloadc218(int cardno
, void __iomem
*baseAddr
, int len
)
2656 int i
, j
, len1
, len2
;
2657 ushort usum
, *ptr
, keycode
;
2659 if (moxa_boards
[cardno
].boardType
== MOXA_BOARD_CP204J
)
2660 keycode
= CP204J_KeyCode
;
2662 keycode
= C218_KeyCode
;
2665 ptr
= (ushort
*) moxaBuff
;
2666 for (i
= 0; i
< len1
; i
++)
2667 usum
+= le16_to_cpu(*(ptr
+ i
));
2673 len2
= (len1
> 2048) ? 2048 : len1
;
2675 for (i
= 0; i
< len2
<< 1; i
++)
2676 writeb(moxaBuff
[i
+ j
], baseAddr
+ C218_LoadBuf
+ i
);
2679 writew(len2
, baseAddr
+ C218DLoad_len
);
2680 writew(0, baseAddr
+ C218_key
);
2681 for (i
= 0; i
< 100; i
++) {
2682 if (readw(baseAddr
+ C218_key
) == keycode
)
2684 moxadelay(1); /* delay 10 ms */
2686 if (readw(baseAddr
+ C218_key
) != keycode
) {
2690 writew(0, baseAddr
+ C218DLoad_len
);
2691 writew(usum
, baseAddr
+ C218check_sum
);
2692 writew(0, baseAddr
+ C218_key
);
2693 for (i
= 0; i
< 100; i
++) {
2694 if (readw(baseAddr
+ C218_key
) == keycode
)
2696 moxadelay(1); /* delay 10 ms */
2699 } while ((readb(baseAddr
+ C218chksum_ok
) != 1) && (retry
< 3));
2700 if (readb(baseAddr
+ C218chksum_ok
) != 1) {
2703 writew(0, baseAddr
+ C218_key
);
2704 for (i
= 0; i
< 100; i
++) {
2705 if (readw(baseAddr
+ Magic_no
) == Magic_code
)
2707 moxadelay(1); /* delay 10 ms */
2709 if (readw(baseAddr
+ Magic_no
) != Magic_code
) {
2712 writew(1, baseAddr
+ Disable_IRQ
);
2713 writew(0, baseAddr
+ Magic_no
);
2714 for (i
= 0; i
< 100; i
++) {
2715 if (readw(baseAddr
+ Magic_no
) == Magic_code
)
2717 moxadelay(1); /* delay 10 ms */
2719 if (readw(baseAddr
+ Magic_no
) != Magic_code
) {
2723 moxa_boards
[cardno
].intNdx
= baseAddr
+ IRQindex
;
2724 moxa_boards
[cardno
].intPend
= baseAddr
+ IRQpending
;
2725 moxa_boards
[cardno
].intTable
= baseAddr
+ IRQtable
;
2729 static int moxaloadc320(int cardno
, void __iomem
*baseAddr
, int len
, int *numPorts
)
2732 int i
, j
, wlen
, len2
, retry
;
2737 uptr
= (ushort
*) moxaBuff
;
2738 for (i
= 0; i
< wlen
; i
++)
2739 usum
+= le16_to_cpu(uptr
[i
]);
2750 for (i
= 0; i
< len2
; i
++)
2751 writeb(moxaBuff
[j
+ i
], baseAddr
+ C320_LoadBuf
+ i
);
2754 writew(len2
, baseAddr
+ C320DLoad_len
);
2755 writew(0, baseAddr
+ C320_key
);
2756 for (i
= 0; i
< 10; i
++) {
2757 if (readw(baseAddr
+ C320_key
) == C320_KeyCode
)
2761 if (readw(baseAddr
+ C320_key
) != C320_KeyCode
)
2764 writew(0, baseAddr
+ C320DLoad_len
);
2765 writew(usum
, baseAddr
+ C320check_sum
);
2766 writew(0, baseAddr
+ C320_key
);
2767 for (i
= 0; i
< 10; i
++) {
2768 if (readw(baseAddr
+ C320_key
) == C320_KeyCode
)
2773 } while ((readb(baseAddr
+ C320chksum_ok
) != 1) && (retry
< 3));
2774 if (readb(baseAddr
+ C320chksum_ok
) != 1)
2776 writew(0, baseAddr
+ C320_key
);
2777 for (i
= 0; i
< 600; i
++) {
2778 if (readw(baseAddr
+ Magic_no
) == Magic_code
)
2782 if (readw(baseAddr
+ Magic_no
) != Magic_code
)
2785 if (moxa_boards
[cardno
].busType
== MOXA_BUS_TYPE_PCI
) { /* ASIC board */
2786 writew(0x3800, baseAddr
+ TMS320_PORT1
);
2787 writew(0x3900, baseAddr
+ TMS320_PORT2
);
2788 writew(28499, baseAddr
+ TMS320_CLOCK
);
2790 writew(0x3200, baseAddr
+ TMS320_PORT1
);
2791 writew(0x3400, baseAddr
+ TMS320_PORT2
);
2792 writew(19999, baseAddr
+ TMS320_CLOCK
);
2794 writew(1, baseAddr
+ Disable_IRQ
);
2795 writew(0, baseAddr
+ Magic_no
);
2796 for (i
= 0; i
< 500; i
++) {
2797 if (readw(baseAddr
+ Magic_no
) == Magic_code
)
2801 if (readw(baseAddr
+ Magic_no
) != Magic_code
)
2804 j
= readw(baseAddr
+ Module_cnt
);
2808 writew(j
, baseAddr
+ Module_no
);
2809 writew(0, baseAddr
+ Magic_no
);
2810 for (i
= 0; i
< 600; i
++) {
2811 if (readw(baseAddr
+ Magic_no
) == Magic_code
)
2815 if (readw(baseAddr
+ Magic_no
) != Magic_code
)
2818 moxa_boards
[cardno
].intNdx
= baseAddr
+ IRQindex
;
2819 moxa_boards
[cardno
].intPend
= baseAddr
+ IRQpending
;
2820 moxa_boards
[cardno
].intTable
= baseAddr
+ IRQtable
;
2824 static void MoxaSetFifo(int port
, int enable
)
2826 void __iomem
*ofsAddr
= moxa_ports
[port
].tableAddr
;
2829 moxafunc(ofsAddr
, FC_SetRxFIFOTrig
, 0);
2830 moxafunc(ofsAddr
, FC_SetTxFIFOCnt
, 1);
2832 moxafunc(ofsAddr
, FC_SetRxFIFOTrig
, 3);
2833 moxafunc(ofsAddr
, FC_SetTxFIFOCnt
, 16);