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>
44 #include <linux/completion.h>
46 #include <asm/system.h>
48 #include <asm/uaccess.h>
50 #define MOXA_VERSION "5.1k"
53 #define MOXACUMAJOR 173
55 #define MAX_BOARDS 4 /* Don't change this value */
56 #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
57 #define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD)
60 * Define the Moxa PCI vendor and device IDs.
62 #define MOXA_BUS_TYPE_ISA 0
63 #define MOXA_BUS_TYPE_PCI 1
66 MOXA_BOARD_C218_PCI
= 1,
73 static char *moxa_brdname
[] =
75 "C218 Turbo PCI series",
76 "C218 Turbo ISA series",
77 "C320 Turbo PCI series",
78 "C320 Turbo ISA series",
83 static struct pci_device_id moxa_pcibrds
[] = {
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
},
92 MODULE_DEVICE_TABLE(pci
, moxa_pcibrds
);
93 #endif /* CONFIG_PCI */
95 static struct moxa_board_conf
{
102 void __iomem
*basemem
;
103 void __iomem
*intNdx
;
104 void __iomem
*intPend
;
105 void __iomem
*intTable
;
106 } moxa_boards
[MAX_BOARDS
];
108 struct mxser_mstatus
{
125 unsigned short closing_wait
;
128 long event
; /* long req'd for set_bit --RR */
130 unsigned long statusflags
;
131 struct tty_struct
*tty
;
133 wait_queue_head_t open_wait
;
134 struct completion close_wait
;
136 struct timer_list emptyTimer
;
140 void __iomem
*tableAddr
;
149 #define TXSTOPPED 0x1
151 #define EMPTYWAIT 0x4
154 #define SERIAL_DO_RESTART
156 #define WAKEUP_CHARS 256
158 static int ttymajor
= MOXAMAJOR
;
159 /* Variables for insmod */
161 static unsigned long baseaddr
[MAX_BOARDS
];
162 static unsigned int type
[MAX_BOARDS
];
163 static unsigned int numports
[MAX_BOARDS
];
166 MODULE_AUTHOR("William Chen");
167 MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
168 MODULE_LICENSE("GPL");
170 module_param_array(type
, uint
, NULL
, 0);
171 MODULE_PARM_DESC(type
, "card type: C218=2, C320=4");
172 module_param_array(baseaddr
, ulong
, NULL
, 0);
173 MODULE_PARM_DESC(baseaddr
, "base address");
174 module_param_array(numports
, uint
, NULL
, 0);
175 MODULE_PARM_DESC(numports
, "numports (ignored for C218)");
177 module_param(ttymajor
, int, 0);
182 static int moxa_open(struct tty_struct
*, struct file
*);
183 static void moxa_close(struct tty_struct
*, struct file
*);
184 static int moxa_write(struct tty_struct
*, const unsigned char *, int);
185 static int moxa_write_room(struct tty_struct
*);
186 static void moxa_flush_buffer(struct tty_struct
*);
187 static int moxa_chars_in_buffer(struct tty_struct
*);
188 static void moxa_flush_chars(struct tty_struct
*);
189 static void moxa_put_char(struct tty_struct
*, unsigned char);
190 static int moxa_ioctl(struct tty_struct
*, struct file
*, unsigned int, unsigned long);
191 static void moxa_throttle(struct tty_struct
*);
192 static void moxa_unthrottle(struct tty_struct
*);
193 static void moxa_set_termios(struct tty_struct
*, struct ktermios
*);
194 static void moxa_stop(struct tty_struct
*);
195 static void moxa_start(struct tty_struct
*);
196 static void moxa_hangup(struct tty_struct
*);
197 static int moxa_tiocmget(struct tty_struct
*tty
, struct file
*file
);
198 static int moxa_tiocmset(struct tty_struct
*tty
, struct file
*file
,
199 unsigned int set
, unsigned int clear
);
200 static void moxa_poll(unsigned long);
201 static void moxa_set_tty_param(struct tty_struct
*, struct ktermios
*);
202 static int moxa_block_till_ready(struct tty_struct
*, struct file
*,
204 static void moxa_setup_empty_event(struct tty_struct
*);
205 static void moxa_check_xmit_empty(unsigned long);
206 static void moxa_shut_down(struct moxa_port
*);
207 static void moxa_receive_data(struct moxa_port
*);
209 * moxa board interface functions:
211 static void MoxaDriverInit(void);
212 static int MoxaDriverIoctl(unsigned int, unsigned long, int);
213 static int MoxaDriverPoll(void);
214 static int MoxaPortsOfCard(int);
215 static int MoxaPortIsValid(int);
216 static void MoxaPortEnable(int);
217 static void MoxaPortDisable(int);
218 static long MoxaPortGetMaxBaud(int);
219 static long MoxaPortSetBaud(int, long);
220 static int MoxaPortSetTermio(int, struct ktermios
*, speed_t
);
221 static int MoxaPortGetLineOut(int, int *, int *);
222 static void MoxaPortLineCtrl(int, int, int);
223 static void MoxaPortFlowCtrl(int, int, int, int, int, int);
224 static int MoxaPortLineStatus(int);
225 static int MoxaPortDCDChange(int);
226 static int MoxaPortDCDON(int);
227 static void MoxaPortFlushData(int, int);
228 static int MoxaPortWriteData(int, unsigned char *, int);
229 static int MoxaPortReadData(int, struct tty_struct
*tty
);
230 static int MoxaPortTxQueue(int);
231 static int MoxaPortRxQueue(int);
232 static int MoxaPortTxFree(int);
233 static void MoxaPortTxDisable(int);
234 static void MoxaPortTxEnable(int);
235 static int MoxaPortResetBrkCnt(int);
236 static void MoxaPortSendBreak(int, int);
237 static int moxa_get_serial_info(struct moxa_port
*, struct serial_struct __user
*);
238 static int moxa_set_serial_info(struct moxa_port
*, struct serial_struct __user
*);
239 static void MoxaSetFifo(int port
, int enable
);
241 static const struct tty_operations moxa_ops
= {
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
,
251 .throttle
= moxa_throttle
,
252 .unthrottle
= moxa_unthrottle
,
253 .set_termios
= moxa_set_termios
,
256 .hangup
= moxa_hangup
,
257 .tiocmget
= moxa_tiocmget
,
258 .tiocmset
= moxa_tiocmset
,
261 static struct tty_driver
*moxaDriver
;
262 static struct moxa_port moxa_ports
[MAX_PORTS
];
263 static DEFINE_TIMER(moxaTimer
, moxa_poll
, 0, 0);
264 static DEFINE_SPINLOCK(moxa_lock
);
267 static int __devinit
moxa_pci_probe(struct pci_dev
*pdev
,
268 const struct pci_device_id
*ent
)
270 struct moxa_board_conf
*board
;
272 int board_type
= ent
->driver_data
;
275 retval
= pci_enable_device(pdev
);
277 dev_err(&pdev
->dev
, "can't enable pci device\n");
281 for (i
= 0; i
< MAX_BOARDS
; i
++)
282 if (moxa_boards
[i
].basemem
== NULL
)
286 if (i
>= MAX_BOARDS
) {
287 dev_warn(&pdev
->dev
, "more than %u MOXA Intellio family boards "
288 "found. Board is ignored.\n", MAX_BOARDS
);
292 board
= &moxa_boards
[i
];
294 retval
= pci_request_region(pdev
, 2, "moxa-base");
296 dev_err(&pdev
->dev
, "can't request pci region 2\n");
300 board
->basemem
= ioremap(pci_resource_start(pdev
, 2), 0x4000);
301 if (board
->basemem
== NULL
) {
302 dev_err(&pdev
->dev
, "can't remap io space 2\n");
306 board
->boardType
= board_type
;
307 switch (board_type
) {
308 case MOXA_BOARD_C218_ISA
:
309 case MOXA_BOARD_C218_PCI
:
313 case MOXA_BOARD_CP204J
:
320 board
->busType
= MOXA_BUS_TYPE_PCI
;
322 pci_set_drvdata(pdev
, board
);
326 pci_release_region(pdev
, 2);
331 static void __devexit
moxa_pci_remove(struct pci_dev
*pdev
)
333 struct moxa_board_conf
*brd
= pci_get_drvdata(pdev
);
335 iounmap(brd
->basemem
);
337 pci_release_region(pdev
, 2);
340 static struct pci_driver moxa_pci_driver
= {
342 .id_table
= moxa_pcibrds
,
343 .probe
= moxa_pci_probe
,
344 .remove
= __devexit_p(moxa_pci_remove
)
346 #endif /* CONFIG_PCI */
348 static int __init
moxa_init(void)
350 struct moxa_port
*ch
;
351 unsigned int i
, isabrds
= 0;
354 printk(KERN_INFO
"MOXA Intellio family driver version %s\n",
356 moxaDriver
= alloc_tty_driver(MAX_PORTS
+ 1);
360 moxaDriver
->owner
= THIS_MODULE
;
361 moxaDriver
->name
= "ttyMX";
362 moxaDriver
->major
= ttymajor
;
363 moxaDriver
->minor_start
= 0;
364 moxaDriver
->type
= TTY_DRIVER_TYPE_SERIAL
;
365 moxaDriver
->subtype
= SERIAL_TYPE_NORMAL
;
366 moxaDriver
->init_termios
= tty_std_termios
;
367 moxaDriver
->init_termios
.c_cflag
= B9600
| CS8
| CREAD
| CLOCAL
| HUPCL
;
368 moxaDriver
->init_termios
.c_ispeed
= 9600;
369 moxaDriver
->init_termios
.c_ospeed
= 9600;
370 moxaDriver
->flags
= TTY_DRIVER_REAL_RAW
;
371 tty_set_operations(moxaDriver
, &moxa_ops
);
373 for (i
= 0, ch
= moxa_ports
; i
< MAX_PORTS
; i
++, ch
++) {
374 ch
->type
= PORT_16550A
;
376 ch
->close_delay
= 5 * HZ
/ 10;
377 ch
->closing_wait
= 30 * HZ
;
378 ch
->cflag
= B9600
| CS8
| CREAD
| CLOCAL
| HUPCL
;
379 init_waitqueue_head(&ch
->open_wait
);
380 init_completion(&ch
->close_wait
);
382 setup_timer(&ch
->emptyTimer
, moxa_check_xmit_empty
,
386 pr_debug("Moxa tty devices major number = %d\n", ttymajor
);
388 if (tty_register_driver(moxaDriver
)) {
389 printk(KERN_ERR
"Couldn't install MOXA Smartio family driver !\n");
390 put_tty_driver(moxaDriver
);
394 mod_timer(&moxaTimer
, jiffies
+ HZ
/ 50);
396 /* Find the boards defined from module args. */
399 struct moxa_board_conf
*brd
= moxa_boards
;
400 for (i
= 0; i
< MAX_BOARDS
; i
++) {
403 if (type
[i
] == MOXA_BOARD_C218_ISA
||
404 type
[i
] == MOXA_BOARD_C320_ISA
) {
405 pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n",
406 isabrds
+ 1, moxa_brdname
[type
[i
] - 1],
408 brd
->boardType
= type
[i
];
409 brd
->numPorts
= type
[i
] == MOXA_BOARD_C218_ISA
? 8 :
411 brd
->busType
= MOXA_BUS_TYPE_ISA
;
412 brd
->basemem
= ioremap(baseaddr
[i
], 0x4000);
414 printk(KERN_ERR
"moxa: can't remap %lx\n",
427 retval
= pci_register_driver(&moxa_pci_driver
);
429 printk(KERN_ERR
"Can't register moxa pci driver!\n");
438 static void __exit
moxa_exit(void)
442 del_timer_sync(&moxaTimer
);
444 for (i
= 0; i
< MAX_PORTS
; i
++)
445 del_timer_sync(&moxa_ports
[i
].emptyTimer
);
447 if (tty_unregister_driver(moxaDriver
))
448 printk(KERN_ERR
"Couldn't unregister MOXA Intellio family "
450 put_tty_driver(moxaDriver
);
453 pci_unregister_driver(&moxa_pci_driver
);
456 for (i
= 0; i
< MAX_BOARDS
; i
++)
457 if (moxa_boards
[i
].basemem
)
458 iounmap(moxa_boards
[i
].basemem
);
461 module_init(moxa_init
);
462 module_exit(moxa_exit
);
464 static int moxa_open(struct tty_struct
*tty
, struct file
*filp
)
466 struct moxa_port
*ch
;
471 if (port
== MAX_PORTS
) {
474 if (!MoxaPortIsValid(port
)) {
475 tty
->driver_data
= NULL
;
479 ch
= &moxa_ports
[port
];
481 tty
->driver_data
= ch
;
483 if (!(ch
->asyncflags
& ASYNC_INITIALIZED
)) {
485 moxa_set_tty_param(tty
, tty
->termios
);
486 MoxaPortLineCtrl(ch
->port
, 1, 1);
487 MoxaPortEnable(ch
->port
);
488 ch
->asyncflags
|= ASYNC_INITIALIZED
;
490 retval
= moxa_block_till_ready(tty
, filp
, ch
);
492 moxa_unthrottle(tty
);
494 if (ch
->type
== PORT_16550A
) {
495 MoxaSetFifo(ch
->port
, 1);
497 MoxaSetFifo(ch
->port
, 0);
503 static void moxa_close(struct tty_struct
*tty
, struct file
*filp
)
505 struct moxa_port
*ch
;
509 if (port
== MAX_PORTS
) {
512 if (!MoxaPortIsValid(port
)) {
513 pr_debug("Invalid portno in moxa_close\n");
514 tty
->driver_data
= NULL
;
517 if (tty
->driver_data
== NULL
) {
520 if (tty_hung_up_p(filp
)) {
523 ch
= (struct moxa_port
*) tty
->driver_data
;
525 if ((tty
->count
== 1) && (ch
->count
!= 1)) {
526 printk(KERN_WARNING
"moxa_close: bad serial port count; "
527 "tty->count is 1, ch->count is %d\n", ch
->count
);
530 if (--ch
->count
< 0) {
531 printk(KERN_WARNING
"moxa_close: bad serial port count, "
532 "device=%s\n", tty
->name
);
538 ch
->asyncflags
|= ASYNC_CLOSING
;
540 ch
->cflag
= tty
->termios
->c_cflag
;
541 if (ch
->asyncflags
& ASYNC_INITIALIZED
) {
542 moxa_setup_empty_event(tty
);
543 tty_wait_until_sent(tty
, 30 * HZ
); /* 30 seconds timeout */
544 del_timer_sync(&moxa_ports
[ch
->port
].emptyTimer
);
547 MoxaPortFlushData(port
, 2);
549 if (tty
->driver
->flush_buffer
)
550 tty
->driver
->flush_buffer(tty
);
551 tty_ldisc_flush(tty
);
556 if (ch
->blocked_open
) {
557 if (ch
->close_delay
) {
558 msleep_interruptible(jiffies_to_msecs(ch
->close_delay
));
560 wake_up_interruptible(&ch
->open_wait
);
562 ch
->asyncflags
&= ~(ASYNC_NORMAL_ACTIVE
| ASYNC_CLOSING
);
563 complete_all(&ch
->close_wait
);
566 static int moxa_write(struct tty_struct
*tty
,
567 const unsigned char *buf
, int count
)
569 struct moxa_port
*ch
;
573 ch
= (struct moxa_port
*) tty
->driver_data
;
578 spin_lock_irqsave(&moxa_lock
, flags
);
579 len
= MoxaPortWriteData(port
, (unsigned char *) buf
, count
);
580 spin_unlock_irqrestore(&moxa_lock
, flags
);
582 /*********************************************
583 if ( !(ch->statusflags & LOWWAIT) &&
584 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
585 ************************************************/
586 ch
->statusflags
|= LOWWAIT
;
590 static int moxa_write_room(struct tty_struct
*tty
)
592 struct moxa_port
*ch
;
596 ch
= (struct moxa_port
*) tty
->driver_data
;
599 return (MoxaPortTxFree(ch
->port
));
602 static void moxa_flush_buffer(struct tty_struct
*tty
)
604 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
608 MoxaPortFlushData(ch
->port
, 1);
612 static int moxa_chars_in_buffer(struct tty_struct
*tty
)
615 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
618 * Sigh...I have to check if driver_data is NULL here, because
619 * if an open() fails, the TTY subsystem eventually calls
620 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
621 * routine. And since the open() failed, we return 0 here. TDJ
625 chars
= MoxaPortTxQueue(ch
->port
);
628 * Make it possible to wakeup anything waiting for output
629 * in tty_ioctl.c, etc.
631 if (!(ch
->statusflags
& EMPTYWAIT
))
632 moxa_setup_empty_event(tty
);
637 static void moxa_flush_chars(struct tty_struct
*tty
)
640 * Don't think I need this, because this is called to empty the TX
641 * buffer for the 16450, 16550, etc.
645 static void moxa_put_char(struct tty_struct
*tty
, unsigned char c
)
647 struct moxa_port
*ch
;
651 ch
= (struct moxa_port
*) tty
->driver_data
;
655 spin_lock_irqsave(&moxa_lock
, flags
);
656 MoxaPortWriteData(port
, &c
, 1);
657 spin_unlock_irqrestore(&moxa_lock
, flags
);
658 /************************************************
659 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
660 *************************************************/
661 ch
->statusflags
|= LOWWAIT
;
664 static int moxa_tiocmget(struct tty_struct
*tty
, struct file
*file
)
666 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
668 int flag
= 0, dtr
, rts
;
671 if ((port
!= MAX_PORTS
) && (!ch
))
674 MoxaPortGetLineOut(ch
->port
, &dtr
, &rts
);
679 dtr
= MoxaPortLineStatus(ch
->port
);
689 static int moxa_tiocmset(struct tty_struct
*tty
, struct file
*file
,
690 unsigned int set
, unsigned int clear
)
692 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
697 if ((port
!= MAX_PORTS
) && (!ch
))
700 MoxaPortGetLineOut(ch
->port
, &dtr
, &rts
);
705 if (clear
& TIOCM_RTS
)
707 if (clear
& TIOCM_DTR
)
709 MoxaPortLineCtrl(ch
->port
, dtr
, rts
);
713 static int moxa_ioctl(struct tty_struct
*tty
, struct file
*file
,
714 unsigned int cmd
, unsigned long arg
)
716 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
718 void __user
*argp
= (void __user
*)arg
;
722 if ((port
!= MAX_PORTS
) && (!ch
))
726 case TCSBRK
: /* SVID version: non-zero arg --> no break */
727 retval
= tty_check_change(tty
);
730 moxa_setup_empty_event(tty
);
731 tty_wait_until_sent(tty
, 0);
733 MoxaPortSendBreak(ch
->port
, 0);
735 case TCSBRKP
: /* support for POSIX tcsendbreak() */
736 retval
= tty_check_change(tty
);
739 moxa_setup_empty_event(tty
);
740 tty_wait_until_sent(tty
, 0);
741 MoxaPortSendBreak(ch
->port
, arg
);
744 return put_user(C_CLOCAL(tty
) ? 1 : 0, (unsigned long __user
*) argp
);
746 if(get_user(retval
, (unsigned long __user
*) argp
))
749 tty
->termios
->c_cflag
= ((tty
->termios
->c_cflag
& ~CLOCAL
) |
752 ch
->asyncflags
&= ~ASYNC_CHECK_CD
;
754 ch
->asyncflags
|= ASYNC_CHECK_CD
;
757 return moxa_get_serial_info(ch
, argp
);
760 return moxa_set_serial_info(ch
, argp
);
762 retval
= MoxaDriverIoctl(cmd
, arg
, port
);
767 static void moxa_throttle(struct tty_struct
*tty
)
769 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
771 ch
->statusflags
|= THROTTLE
;
774 static void moxa_unthrottle(struct tty_struct
*tty
)
776 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
778 ch
->statusflags
&= ~THROTTLE
;
781 static void moxa_set_termios(struct tty_struct
*tty
,
782 struct ktermios
*old_termios
)
784 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
788 moxa_set_tty_param(tty
, old_termios
);
789 if (!(old_termios
->c_cflag
& CLOCAL
) &&
790 (tty
->termios
->c_cflag
& CLOCAL
))
791 wake_up_interruptible(&ch
->open_wait
);
794 static void moxa_stop(struct tty_struct
*tty
)
796 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
800 MoxaPortTxDisable(ch
->port
);
801 ch
->statusflags
|= TXSTOPPED
;
805 static void moxa_start(struct tty_struct
*tty
)
807 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
812 if (!(ch
->statusflags
& TXSTOPPED
))
815 MoxaPortTxEnable(ch
->port
);
816 ch
->statusflags
&= ~TXSTOPPED
;
819 static void moxa_hangup(struct tty_struct
*tty
)
821 struct moxa_port
*ch
= (struct moxa_port
*) tty
->driver_data
;
823 moxa_flush_buffer(tty
);
827 ch
->asyncflags
&= ~ASYNC_NORMAL_ACTIVE
;
829 wake_up_interruptible(&ch
->open_wait
);
832 static void moxa_poll(unsigned long ignored
)
835 struct moxa_port
*ch
;
836 struct tty_struct
*tp
;
839 del_timer(&moxaTimer
);
841 if (MoxaDriverPoll() < 0) {
842 mod_timer(&moxaTimer
, jiffies
+ HZ
/ 50);
845 for (card
= 0; card
< MAX_BOARDS
; card
++) {
846 if ((ports
= MoxaPortsOfCard(card
)) <= 0)
848 ch
= &moxa_ports
[card
* MAX_PORTS_PER_BOARD
];
849 for (i
= 0; i
< ports
; i
++, ch
++) {
850 if ((ch
->asyncflags
& ASYNC_INITIALIZED
) == 0)
852 if (!(ch
->statusflags
& THROTTLE
) &&
853 (MoxaPortRxQueue(ch
->port
) > 0))
854 moxa_receive_data(ch
);
855 if ((tp
= ch
->tty
) == 0)
857 if (ch
->statusflags
& LOWWAIT
) {
858 if (MoxaPortTxQueue(ch
->port
) <= WAKEUP_CHARS
) {
860 ch
->statusflags
&= ~LOWWAIT
;
865 if (!I_IGNBRK(tp
) && (MoxaPortResetBrkCnt(ch
->port
) > 0)) {
866 tty_insert_flip_char(tp
, 0, TTY_BREAK
);
867 tty_schedule_flip(tp
);
869 if (MoxaPortDCDChange(ch
->port
)) {
870 if (ch
->asyncflags
& ASYNC_CHECK_CD
) {
871 if (MoxaPortDCDON(ch
->port
))
872 wake_up_interruptible(&ch
->open_wait
);
875 wake_up_interruptible(&ch
->open_wait
);
876 ch
->asyncflags
&= ~ASYNC_NORMAL_ACTIVE
;
883 mod_timer(&moxaTimer
, jiffies
+ HZ
/ 50);
886 /******************************************************************************/
888 static void moxa_set_tty_param(struct tty_struct
*tty
, struct ktermios
*old_termios
)
890 register struct ktermios
*ts
;
891 struct moxa_port
*ch
;
892 int rts
, cts
, txflow
, rxflow
, xany
, baud
;
894 ch
= (struct moxa_port
*) tty
->driver_data
;
896 if (ts
->c_cflag
& CLOCAL
)
897 ch
->asyncflags
&= ~ASYNC_CHECK_CD
;
899 ch
->asyncflags
|= ASYNC_CHECK_CD
;
900 rts
= cts
= txflow
= rxflow
= xany
= 0;
901 if (ts
->c_cflag
& CRTSCTS
)
903 if (ts
->c_iflag
& IXON
)
905 if (ts
->c_iflag
& IXOFF
)
907 if (ts
->c_iflag
& IXANY
)
910 /* Clear the features we don't support */
911 ts
->c_cflag
&= ~CMSPAR
;
912 MoxaPortFlowCtrl(ch
->port
, rts
, cts
, txflow
, rxflow
, xany
);
913 baud
= MoxaPortSetTermio(ch
->port
, ts
, tty_get_baud_rate(tty
));
915 baud
= tty_termios_baud_rate(old_termios
);
916 /* Not put the baud rate into the termios data */
917 tty_encode_baud_rate(tty
, baud
, baud
);
920 static int moxa_block_till_ready(struct tty_struct
*tty
, struct file
*filp
,
921 struct moxa_port
*ch
)
923 DECLARE_WAITQUEUE(wait
,current
);
926 int do_clocal
= C_CLOCAL(tty
);
929 * If the device is in the middle of being closed, then block
930 * until it's done, and then try again.
932 if (tty_hung_up_p(filp
) || (ch
->asyncflags
& ASYNC_CLOSING
)) {
933 if (ch
->asyncflags
& ASYNC_CLOSING
)
934 wait_for_completion_interruptible(&ch
->close_wait
);
935 #ifdef SERIAL_DO_RESTART
936 if (ch
->asyncflags
& ASYNC_HUP_NOTIFY
)
939 return (-ERESTARTSYS
);
945 * If non-blocking mode is set, then make the check up front
948 if (filp
->f_flags
& O_NONBLOCK
) {
949 ch
->asyncflags
|= ASYNC_NORMAL_ACTIVE
;
953 * Block waiting for the carrier detect and the line to become free
956 add_wait_queue(&ch
->open_wait
, &wait
);
957 pr_debug("block_til_ready before block: ttys%d, count = %d\n",
958 ch
->port
, ch
->count
);
959 spin_lock_irqsave(&moxa_lock
, flags
);
960 if (!tty_hung_up_p(filp
))
963 spin_unlock_irqrestore(&moxa_lock
, flags
);
966 set_current_state(TASK_INTERRUPTIBLE
);
967 if (tty_hung_up_p(filp
) ||
968 !(ch
->asyncflags
& ASYNC_INITIALIZED
)) {
969 #ifdef SERIAL_DO_RESTART
970 if (ch
->asyncflags
& ASYNC_HUP_NOTIFY
)
973 retval
= -ERESTARTSYS
;
979 if (!(ch
->asyncflags
& ASYNC_CLOSING
) && (do_clocal
||
980 MoxaPortDCDON(ch
->port
)))
983 if (signal_pending(current
)) {
984 retval
= -ERESTARTSYS
;
989 set_current_state(TASK_RUNNING
);
990 remove_wait_queue(&ch
->open_wait
, &wait
);
992 spin_lock_irqsave(&moxa_lock
, flags
);
993 if (!tty_hung_up_p(filp
))
996 spin_unlock_irqrestore(&moxa_lock
, flags
);
997 pr_debug("block_til_ready after blocking: ttys%d, count = %d\n",
998 ch
->port
, ch
->count
);
1001 /* FIXME: review to see if we need to use set_bit on these */
1002 ch
->asyncflags
|= ASYNC_NORMAL_ACTIVE
;
1006 static void moxa_setup_empty_event(struct tty_struct
*tty
)
1008 struct moxa_port
*ch
= tty
->driver_data
;
1009 unsigned long flags
;
1011 spin_lock_irqsave(&moxa_lock
, flags
);
1012 ch
->statusflags
|= EMPTYWAIT
;
1013 mod_timer(&moxa_ports
[ch
->port
].emptyTimer
, jiffies
+ HZ
);
1014 spin_unlock_irqrestore(&moxa_lock
, flags
);
1017 static void moxa_check_xmit_empty(unsigned long data
)
1019 struct moxa_port
*ch
;
1021 ch
= (struct moxa_port
*) data
;
1022 if (ch
->tty
&& (ch
->statusflags
& EMPTYWAIT
)) {
1023 if (MoxaPortTxQueue(ch
->port
) == 0) {
1024 ch
->statusflags
&= ~EMPTYWAIT
;
1025 tty_wakeup(ch
->tty
);
1028 mod_timer(&moxa_ports
[ch
->port
].emptyTimer
,
1029 round_jiffies(jiffies
+ HZ
));
1031 ch
->statusflags
&= ~EMPTYWAIT
;
1034 static void moxa_shut_down(struct moxa_port
*ch
)
1036 struct tty_struct
*tp
;
1038 if (!(ch
->asyncflags
& ASYNC_INITIALIZED
))
1043 MoxaPortDisable(ch
->port
);
1046 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1048 if (tp
->termios
->c_cflag
& HUPCL
)
1049 MoxaPortLineCtrl(ch
->port
, 0, 0);
1051 ch
->asyncflags
&= ~ASYNC_INITIALIZED
;
1054 static void moxa_receive_data(struct moxa_port
*ch
)
1056 struct tty_struct
*tp
;
1057 struct ktermios
*ts
;
1058 unsigned long flags
;
1064 /**************************************************
1065 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1066 *****************************************************/
1068 MoxaPortFlushData(ch
->port
, 0);
1071 spin_lock_irqsave(&moxa_lock
, flags
);
1072 MoxaPortReadData(ch
->port
, tp
);
1073 spin_unlock_irqrestore(&moxa_lock
, flags
);
1074 tty_schedule_flip(tp
);
1077 #define Magic_code 0x404
1080 * System Configuration
1083 * for C218 BIOS initialization
1085 #define C218_ConfBase 0x800
1086 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1087 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1088 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1089 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1090 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1091 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1092 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1093 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1094 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1095 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1097 #define C218_LoadBuf 0x0F00
1098 #define C218_KeyCode 0x218
1099 #define CP204J_KeyCode 0x204
1102 * for C320 BIOS initialization
1104 #define C320_ConfBase 0x800
1105 #define C320_LoadBuf 0x0f00
1106 #define STS_init 0x05 /* for C320_status */
1108 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1109 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1110 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1111 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1112 #define C320check_sum C320_ConfBase + 8 /* WORD */
1113 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1114 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1115 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1117 #define C320_KeyCode 0x320
1119 #define FixPage_addr 0x0000 /* starting addr of static page */
1120 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1121 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1122 #define Control_reg 0x1ff0 /* select page and reset control */
1123 #define HW_reset 0x80
1128 #define FC_CardReset 0x80
1129 #define FC_ChannelReset 1 /* C320 firmware not supported */
1130 #define FC_EnableCH 2
1131 #define FC_DisableCH 3
1132 #define FC_SetParam 4
1133 #define FC_SetMode 5
1134 #define FC_SetRate 6
1135 #define FC_LineControl 7
1136 #define FC_LineStatus 8
1137 #define FC_XmitControl 9
1138 #define FC_FlushQueue 10
1139 #define FC_SendBreak 11
1140 #define FC_StopBreak 12
1141 #define FC_LoopbackON 13
1142 #define FC_LoopbackOFF 14
1143 #define FC_ClrIrqTable 15
1144 #define FC_SendXon 16
1145 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1146 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1147 #define FC_SetBreakIrq 19
1148 #define FC_SetLineIrq 20
1149 #define FC_SetFlowCtl 21
1150 #define FC_GenIrq 22
1151 #define FC_InCD180 23
1152 #define FC_OutCD180 24
1153 #define FC_InUARTreg 23
1154 #define FC_OutUARTreg 24
1155 #define FC_SetXonXoff 25
1156 #define FC_OutCD180CCR 26
1157 #define FC_ExtIQueue 27
1158 #define FC_ExtOQueue 28
1159 #define FC_ClrLineIrq 29
1160 #define FC_HWFlowCtl 30
1161 #define FC_GetClockRate 35
1162 #define FC_SetBaud 36
1163 #define FC_SetDataMode 41
1164 #define FC_GetCCSR 43
1165 #define FC_GetDataError 45
1166 #define FC_RxControl 50
1167 #define FC_ImmSend 51
1168 #define FC_SetXonState 52
1169 #define FC_SetXoffState 53
1170 #define FC_SetRxFIFOTrig 54
1171 #define FC_SetTxFIFOCnt 55
1172 #define FC_UnixRate 56
1173 #define FC_UnixResetTimer 57
1175 #define RxFIFOTrig1 0
1176 #define RxFIFOTrig4 1
1177 #define RxFIFOTrig8 2
1178 #define RxFIFOTrig14 3
1183 #define DRAM_global 0
1184 #define INT_data (DRAM_global + 0)
1185 #define Config_base (DRAM_global + 0x108)
1187 #define IRQindex (INT_data + 0)
1188 #define IRQpending (INT_data + 4)
1189 #define IRQtable (INT_data + 8)
1194 #define IntrRx 0x01 /* receiver data O.K. */
1195 #define IntrTx 0x02 /* transmit buffer empty */
1196 #define IntrFunc 0x04 /* function complete */
1197 #define IntrBreak 0x08 /* received break */
1198 #define IntrLine 0x10 /* line status change
1200 #define IntrIntr 0x20 /* received INTR code */
1201 #define IntrQuit 0x40 /* received QUIT code */
1202 #define IntrEOF 0x80 /* received EOF code */
1204 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1205 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1207 #define Magic_no (Config_base + 0)
1208 #define Card_model_no (Config_base + 2)
1209 #define Total_ports (Config_base + 4)
1210 #define Module_cnt (Config_base + 8)
1211 #define Module_no (Config_base + 10)
1212 #define Timer_10ms (Config_base + 14)
1213 #define Disable_IRQ (Config_base + 20)
1214 #define TMS320_PORT1 (Config_base + 22)
1215 #define TMS320_PORT2 (Config_base + 24)
1216 #define TMS320_CLOCK (Config_base + 26)
1219 * DATA BUFFER in DRAM
1221 #define Extern_table 0x400 /* Base address of the external table
1222 (24 words * 64) total 3K bytes
1223 (24 words * 128) total 6K bytes */
1224 #define Extern_size 0x60 /* 96 bytes */
1225 #define RXrptr 0x00 /* read pointer for RX buffer */
1226 #define RXwptr 0x02 /* write pointer for RX buffer */
1227 #define TXrptr 0x04 /* read pointer for TX buffer */
1228 #define TXwptr 0x06 /* write pointer for TX buffer */
1229 #define HostStat 0x08 /* IRQ flag and general flag */
1230 #define FlagStat 0x0A
1231 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1232 /* x x x x | | | | */
1233 /* | | | + CTS flow */
1234 /* | | +--- RTS flow */
1235 /* | +------ TX Xon/Xoff */
1236 /* +--------- RX Xon/Xoff */
1237 #define Break_cnt 0x0E /* received break count */
1238 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1239 #define RX_mask 0x12
1240 #define TX_mask 0x14
1241 #define Ofs_rxb 0x16
1242 #define Ofs_txb 0x18
1243 #define Page_rxb 0x1A
1244 #define Page_txb 0x1C
1245 #define EndPage_rxb 0x1E
1246 #define EndPage_txb 0x20
1247 #define Data_error 0x22
1248 #define RxTrigger 0x28
1249 #define TxTrigger 0x2a
1251 #define rRXwptr 0x34
1252 #define Low_water 0x36
1254 #define FuncCode 0x40
1255 #define FuncArg 0x42
1256 #define FuncArg1 0x44
1258 #define C218rx_size 0x2000 /* 8K bytes */
1259 #define C218tx_size 0x8000 /* 32K bytes */
1261 #define C218rx_mask (C218rx_size - 1)
1262 #define C218tx_mask (C218tx_size - 1)
1264 #define C320p8rx_size 0x2000
1265 #define C320p8tx_size 0x8000
1266 #define C320p8rx_mask (C320p8rx_size - 1)
1267 #define C320p8tx_mask (C320p8tx_size - 1)
1269 #define C320p16rx_size 0x2000
1270 #define C320p16tx_size 0x4000
1271 #define C320p16rx_mask (C320p16rx_size - 1)
1272 #define C320p16tx_mask (C320p16tx_size - 1)
1274 #define C320p24rx_size 0x2000
1275 #define C320p24tx_size 0x2000
1276 #define C320p24rx_mask (C320p24rx_size - 1)
1277 #define C320p24tx_mask (C320p24tx_size - 1)
1279 #define C320p32rx_size 0x1000
1280 #define C320p32tx_size 0x1000
1281 #define C320p32rx_mask (C320p32rx_size - 1)
1282 #define C320p32tx_mask (C320p32tx_size - 1)
1284 #define Page_size 0x2000
1285 #define Page_mask (Page_size - 1)
1286 #define C218rx_spage 3
1287 #define C218tx_spage 4
1288 #define C218rx_pageno 1
1289 #define C218tx_pageno 4
1290 #define C218buf_pageno 5
1292 #define C320p8rx_spage 3
1293 #define C320p8tx_spage 4
1294 #define C320p8rx_pgno 1
1295 #define C320p8tx_pgno 4
1296 #define C320p8buf_pgno 5
1298 #define C320p16rx_spage 3
1299 #define C320p16tx_spage 4
1300 #define C320p16rx_pgno 1
1301 #define C320p16tx_pgno 2
1302 #define C320p16buf_pgno 3
1304 #define C320p24rx_spage 3
1305 #define C320p24tx_spage 4
1306 #define C320p24rx_pgno 1
1307 #define C320p24tx_pgno 1
1308 #define C320p24buf_pgno 2
1310 #define C320p32rx_spage 3
1311 #define C320p32tx_ofs C320p32rx_size
1312 #define C320p32tx_spage 3
1313 #define C320p32buf_pgno 1
1318 #define WakeupRx 0x01
1319 #define WakeupTx 0x02
1320 #define WakeupBreak 0x08
1321 #define WakeupLine 0x10
1322 #define WakeupIntr 0x20
1323 #define WakeupQuit 0x40
1324 #define WakeupEOF 0x80 /* used in VTIME control */
1325 #define WakeupRxTrigger 0x100
1326 #define WakeupTxTrigger 0x200
1330 #define Rx_over 0x01
1331 #define Xoff_state 0x02
1332 #define Tx_flowOff 0x04
1333 #define Tx_enable 0x08
1334 #define CTS_state 0x10
1335 #define DSR_state 0x20
1336 #define DCD_state 0x80
1340 #define CTS_FlowCtl 1
1341 #define RTS_FlowCtl 2
1342 #define Tx_FlowCtl 4
1343 #define Rx_FlowCtl 8
1344 #define IXM_IXANY 0x10
1346 #define LowWater 128
1354 /* mode definition */
1360 #define MX_STOP1 0x00
1361 #define MX_STOP15 0x04
1362 #define MX_STOP2 0x08
1364 #define MX_PARNONE 0x00
1365 #define MX_PAREVEN 0x40
1366 #define MX_PARODD 0xC0
1374 int rxcnt
[MAX_PORTS
];
1375 int txcnt
[MAX_PORTS
];
1378 #define DCD_changed 0x01
1379 #define DCD_oldstate 0x80
1381 static unsigned char moxaBuff
[10240];
1382 static int moxaLowWaterChk
;
1383 static int moxaCard
;
1384 static struct mon_str moxaLog
;
1385 static int moxaFuncTout
= HZ
/ 2;
1387 static void moxafunc(void __iomem
*, int, ushort
);
1388 static void moxa_wait_finish(void __iomem
*);
1389 static void moxa_low_water_check(void __iomem
*);
1390 static int moxaloadbios(int, unsigned char __user
*, int);
1391 static int moxafindcard(int);
1392 static int moxaload320b(int, unsigned char __user
*, int);
1393 static int moxaloadcode(int, unsigned char __user
*, int);
1394 static int moxaloadc218(int, void __iomem
*, int);
1395 static int moxaloadc320(int, void __iomem
*, int, int *);
1397 /*****************************************************************************
1398 * Driver level functions: *
1399 * 1. MoxaDriverInit(void); *
1400 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1401 * 3. MoxaDriverPoll(void); *
1402 *****************************************************************************/
1403 void MoxaDriverInit(void)
1405 struct moxa_port
*p
;
1408 moxaFuncTout
= HZ
/ 2; /* 500 mini-seconds */
1411 moxaLowWaterChk
= 0;
1412 for (i
= 0; i
< MAX_PORTS
; i
++) {
1417 moxaLog
.rxcnt
[i
] = 0;
1418 moxaLog
.txcnt
[i
] = 0;
1423 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1424 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1425 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1426 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1427 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1428 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1429 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1430 #define MOXA_GETDATACOUNT (MOXA + 23)
1431 #define MOXA_GET_IOQUEUE (MOXA + 27)
1432 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1433 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1434 #define MOXA_GET_MAJOR (MOXA + 63)
1435 #define MOXA_GET_CUMAJOR (MOXA + 64)
1436 #define MOXA_GETMSTATUS (MOXA + 65)
1444 static struct dl_str dltmp
;
1446 void MoxaPortFlushData(int port
, int mode
)
1448 void __iomem
*ofsAddr
;
1449 if ((mode
< 0) || (mode
> 2))
1451 ofsAddr
= moxa_ports
[port
].tableAddr
;
1452 moxafunc(ofsAddr
, FC_FlushQueue
, mode
);
1454 moxa_ports
[port
].lowChkFlag
= 0;
1455 moxa_low_water_check(ofsAddr
);
1459 int MoxaDriverIoctl(unsigned int cmd
, unsigned long arg
, int port
)
1463 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1464 void __user
*argp
= (void __user
*)arg
;
1466 if (port
== MAX_PORTS
) {
1467 if ((cmd
!= MOXA_GET_CONF
) && (cmd
!= MOXA_INIT_DRIVER
) &&
1468 (cmd
!= MOXA_LOAD_BIOS
) && (cmd
!= MOXA_FIND_BOARD
) && (cmd
!= MOXA_LOAD_C320B
) &&
1469 (cmd
!= MOXA_LOAD_CODE
) && (cmd
!= MOXA_GETDATACOUNT
) &&
1470 (cmd
!= MOXA_GET_IOQUEUE
) && (cmd
!= MOXA_GET_MAJOR
) &&
1471 (cmd
!= MOXA_GET_CUMAJOR
) && (cmd
!= MOXA_GETMSTATUS
))
1476 if(copy_to_user(argp
, &moxa_boards
, MAX_BOARDS
*
1477 sizeof(struct moxa_board_conf
)))
1480 case MOXA_INIT_DRIVER
:
1481 if ((int) arg
== 0x404)
1484 case MOXA_GETDATACOUNT
:
1485 moxaLog
.tick
= jiffies
;
1486 if(copy_to_user(argp
, &moxaLog
, sizeof(struct mon_str
)))
1489 case MOXA_FLUSH_QUEUE
:
1490 MoxaPortFlushData(port
, arg
);
1492 case MOXA_GET_IOQUEUE
: {
1493 struct moxaq_str __user
*argm
= argp
;
1494 struct moxaq_str tmp
;
1496 for (i
= 0; i
< MAX_PORTS
; i
++, argm
++) {
1497 memset(&tmp
, 0, sizeof(tmp
));
1498 if (moxa_ports
[i
].chkPort
) {
1499 tmp
.inq
= MoxaPortRxQueue(i
);
1500 tmp
.outq
= MoxaPortTxQueue(i
);
1502 if (copy_to_user(argm
, &tmp
, sizeof(tmp
)))
1506 } case MOXA_GET_OQUEUE
:
1507 i
= MoxaPortTxQueue(port
);
1508 return put_user(i
, (unsigned long __user
*)argp
);
1509 case MOXA_GET_IQUEUE
:
1510 i
= MoxaPortRxQueue(port
);
1511 return put_user(i
, (unsigned long __user
*)argp
);
1512 case MOXA_GET_MAJOR
:
1513 if(copy_to_user(argp
, &ttymajor
, sizeof(int)))
1516 case MOXA_GET_CUMAJOR
:
1518 if(copy_to_user(argp
, &i
, sizeof(int)))
1521 case MOXA_GETMSTATUS
: {
1522 struct mxser_mstatus __user
*argm
= argp
;
1523 struct mxser_mstatus tmp
;
1524 struct moxa_port
*p
;
1526 for (i
= 0; i
< MAX_PORTS
; i
++, argm
++) {
1528 memset(&tmp
, 0, sizeof(tmp
));
1532 status
= MoxaPortLineStatus(p
->port
);
1541 if (!p
->tty
|| !p
->tty
->termios
)
1542 tmp
.cflag
= p
->cflag
;
1544 tmp
.cflag
= p
->tty
->termios
->c_cflag
;
1546 if (copy_to_user(argm
, &tmp
, sizeof(tmp
)))
1551 return (-ENOIOCTLCMD
);
1552 case MOXA_LOAD_BIOS
:
1553 case MOXA_FIND_BOARD
:
1554 case MOXA_LOAD_C320B
:
1555 case MOXA_LOAD_CODE
:
1556 if (!capable(CAP_SYS_RAWIO
))
1561 if(copy_from_user(&dltmp
, argp
, sizeof(struct dl_str
)))
1563 if(dltmp
.cardno
< 0 || dltmp
.cardno
>= MAX_BOARDS
|| dltmp
.len
< 0)
1568 case MOXA_LOAD_BIOS
:
1569 i
= moxaloadbios(dltmp
.cardno
, dltmp
.buf
, dltmp
.len
);
1571 case MOXA_FIND_BOARD
:
1572 return moxafindcard(dltmp
.cardno
);
1573 case MOXA_LOAD_C320B
:
1574 moxaload320b(dltmp
.cardno
, dltmp
.buf
, dltmp
.len
);
1575 default: /* to keep gcc happy */
1577 case MOXA_LOAD_CODE
:
1578 i
= moxaloadcode(dltmp
.cardno
, dltmp
.buf
, dltmp
.len
);
1586 int MoxaDriverPoll(void)
1588 struct moxa_board_conf
*brd
;
1589 register ushort temp
;
1591 void __iomem
*ofsAddr
;
1597 for (card
= 0; card
< MAX_BOARDS
; card
++) {
1598 brd
= &moxa_boards
[card
];
1599 if (brd
->loadstat
== 0)
1601 if ((ports
= brd
->numPorts
) == 0)
1603 if (readb(brd
->intPend
) == 0xff) {
1604 ip
= brd
->intTable
+ readb(brd
->intNdx
);
1605 p
= card
* MAX_PORTS_PER_BOARD
;
1607 for (port
= 0; port
< ports
; port
+= 2, p
++) {
1608 if ((temp
= readw(ip
+ port
)) != 0) {
1609 writew(0, ip
+ port
);
1610 ofsAddr
= moxa_ports
[p
].tableAddr
;
1612 writew(readw(ofsAddr
+ HostStat
) & ~WakeupTx
, ofsAddr
+ HostStat
);
1613 if (temp
& IntrBreak
) {
1614 moxa_ports
[p
].breakCnt
++;
1616 if (temp
& IntrLine
) {
1617 if (readb(ofsAddr
+ FlagStat
) & DCD_state
) {
1618 if ((moxa_ports
[p
].DCDState
& DCD_oldstate
) == 0)
1619 moxa_ports
[p
].DCDState
= (DCD_oldstate
|
1622 if (moxa_ports
[p
].DCDState
& DCD_oldstate
)
1623 moxa_ports
[p
].DCDState
= DCD_changed
;
1628 writeb(0, brd
->intPend
);
1630 if (moxaLowWaterChk
) {
1631 p
= card
* MAX_PORTS_PER_BOARD
;
1632 for (port
= 0; port
< ports
; port
++, p
++) {
1633 if (moxa_ports
[p
].lowChkFlag
) {
1634 moxa_ports
[p
].lowChkFlag
= 0;
1635 ofsAddr
= moxa_ports
[p
].tableAddr
;
1636 moxa_low_water_check(ofsAddr
);
1641 moxaLowWaterChk
= 0;
1645 /*****************************************************************************
1646 * Card level function: *
1647 * 1. MoxaPortsOfCard(int cardno); *
1648 *****************************************************************************/
1649 int MoxaPortsOfCard(int cardno
)
1652 if (moxa_boards
[cardno
].boardType
== 0)
1654 return (moxa_boards
[cardno
].numPorts
);
1657 /*****************************************************************************
1658 * Port level functions: *
1659 * 1. MoxaPortIsValid(int port); *
1660 * 2. MoxaPortEnable(int port); *
1661 * 3. MoxaPortDisable(int port); *
1662 * 4. MoxaPortGetMaxBaud(int port); *
1663 * 6. MoxaPortSetBaud(int port, long baud); *
1664 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1665 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1666 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1667 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1668 * 12. MoxaPortLineStatus(int port); *
1669 * 13. MoxaPortDCDChange(int port); *
1670 * 14. MoxaPortDCDON(int port); *
1671 * 15. MoxaPortFlushData(int port, int mode); *
1672 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1673 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1674 * 20. MoxaPortTxQueue(int port); *
1675 * 21. MoxaPortTxFree(int port); *
1676 * 22. MoxaPortRxQueue(int port); *
1677 * 24. MoxaPortTxDisable(int port); *
1678 * 25. MoxaPortTxEnable(int port); *
1679 * 27. MoxaPortResetBrkCnt(int port); *
1680 * 30. MoxaPortSendBreak(int port, int ticks); *
1681 *****************************************************************************/
1683 * Moxa Port Number Description:
1685 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1686 * the port number using in MOXA driver functions will be 0 to 31 for
1687 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1688 * to 127 for fourth. For example, if you setup three MOXA boards,
1689 * first board is C218, second board is C320-16 and third board is
1690 * C320-32. The port number of first board (C218 - 8 ports) is from
1691 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1692 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1693 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1694 * 127 will be invalid.
1697 * Moxa Functions Description:
1699 * Function 1: Driver initialization routine, this routine must be
1700 * called when initialized driver.
1702 * void MoxaDriverInit();
1705 * Function 2: Moxa driver private IOCTL command processing.
1707 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1709 * unsigned int cmd : IOCTL command
1710 * unsigned long arg : IOCTL argument
1711 * int port : port number (0 - 127)
1718 * Function 3: Moxa driver polling process routine.
1720 * int MoxaDriverPoll(void);
1722 * return: 0 ; polling O.K.
1723 * -1 : no any Moxa card.
1726 * Function 4: Get the ports of this card.
1728 * int MoxaPortsOfCard(int cardno);
1730 * int cardno : card number (0 - 3)
1732 * return: 0 : this card is invalid
1736 * Function 5: Check this port is valid or invalid
1738 * int MoxaPortIsValid(int port);
1739 * int port : port number (0 - 127, ref port description)
1741 * return: 0 : this port is invalid
1742 * 1 : this port is valid
1745 * Function 6: Enable this port to start Tx/Rx data.
1747 * void MoxaPortEnable(int port);
1748 * int port : port number (0 - 127)
1751 * Function 7: Disable this port
1753 * void MoxaPortDisable(int port);
1754 * int port : port number (0 - 127)
1757 * Function 8: Get the maximun available baud rate of this port.
1759 * long MoxaPortGetMaxBaud(int port);
1760 * int port : port number (0 - 127)
1762 * return: 0 : this port is invalid
1763 * 38400/57600/115200 bps
1766 * Function 10: Setting baud rate of this port.
1768 * long MoxaPortSetBaud(int port, long baud);
1769 * int port : port number (0 - 127)
1770 * long baud : baud rate (50 - 115200)
1772 * return: 0 : this port is invalid or baud < 50
1773 * 50 - 115200 : the real baud rate set to the port, if
1774 * the argument baud is large than maximun
1775 * available baud rate, the real setting
1776 * baud rate will be the maximun baud rate.
1779 * Function 12: Configure the port.
1781 * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud);
1782 * int port : port number (0 - 127)
1783 * struct ktermios * termio : termio structure pointer
1784 * speed_t baud : baud rate
1786 * return: -1 : this port is invalid or termio == NULL
1790 * Function 13: Get the DTR/RTS state of this port.
1792 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1793 * int port : port number (0 - 127)
1794 * int * dtrState : pointer to INT to receive the current DTR
1795 * state. (if NULL, this function will not
1796 * write to this address)
1797 * int * rtsState : pointer to INT to receive the current RTS
1798 * state. (if NULL, this function will not
1799 * write to this address)
1801 * return: -1 : this port is invalid
1805 * Function 14: Setting the DTR/RTS output state of this port.
1807 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1808 * int port : port number (0 - 127)
1809 * int dtrState : DTR output state (0: off, 1: on)
1810 * int rtsState : RTS output state (0: off, 1: on)
1813 * Function 15: Setting the flow control of this port.
1815 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1816 * int txFlow,int xany);
1817 * int port : port number (0 - 127)
1818 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1819 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1820 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1821 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1822 * int xany : S/W XANY flow control (0: no, 1: yes)
1825 * Function 16: Get ths line status of this port
1827 * int MoxaPortLineStatus(int port);
1828 * int port : port number (0 - 127)
1830 * return: Bit 0 - CTS state (0: off, 1: on)
1831 * Bit 1 - DSR state (0: off, 1: on)
1832 * Bit 2 - DCD state (0: off, 1: on)
1835 * Function 17: Check the DCD state has changed since the last read
1838 * int MoxaPortDCDChange(int port);
1839 * int port : port number (0 - 127)
1841 * return: 0 : no changed
1842 * 1 : DCD has changed
1845 * Function 18: Check ths current DCD state is ON or not.
1847 * int MoxaPortDCDON(int port);
1848 * int port : port number (0 - 127)
1850 * return: 0 : DCD off
1854 * Function 19: Flush the Rx/Tx buffer data of this port.
1856 * void MoxaPortFlushData(int port, int mode);
1857 * int port : port number (0 - 127)
1859 * 0 : flush the Rx buffer
1860 * 1 : flush the Tx buffer
1861 * 2 : flush the Rx and Tx buffer
1864 * Function 20: Write data.
1866 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
1867 * int port : port number (0 - 127)
1868 * unsigned char * buffer : pointer to write data buffer.
1869 * int length : write data length
1871 * return: 0 - length : real write data length
1874 * Function 21: Read data.
1876 * int MoxaPortReadData(int port, struct tty_struct *tty);
1877 * int port : port number (0 - 127)
1878 * struct tty_struct *tty : tty for data
1880 * return: 0 - length : real read data length
1883 * Function 24: Get the Tx buffer current queued data bytes
1885 * int MoxaPortTxQueue(int port);
1886 * int port : port number (0 - 127)
1888 * return: .. : Tx buffer current queued data bytes
1891 * Function 25: Get the Tx buffer current free space
1893 * int MoxaPortTxFree(int port);
1894 * int port : port number (0 - 127)
1896 * return: .. : Tx buffer current free space
1899 * Function 26: Get the Rx buffer current queued data bytes
1901 * int MoxaPortRxQueue(int port);
1902 * int port : port number (0 - 127)
1904 * return: .. : Rx buffer current queued data bytes
1907 * Function 28: Disable port data transmission.
1909 * void MoxaPortTxDisable(int port);
1910 * int port : port number (0 - 127)
1913 * Function 29: Enable port data transmission.
1915 * void MoxaPortTxEnable(int port);
1916 * int port : port number (0 - 127)
1919 * Function 31: Get the received BREAK signal count and reset it.
1921 * int MoxaPortResetBrkCnt(int port);
1922 * int port : port number (0 - 127)
1924 * return: 0 - .. : BREAK signal count
1927 * Function 34: Send out a BREAK signal.
1929 * void MoxaPortSendBreak(int port, int ms100);
1930 * int port : port number (0 - 127)
1931 * int ms100 : break signal time interval.
1932 * unit: 100 mini-second. if ms100 == 0, it will
1933 * send out a about 250 ms BREAK signal.
1936 int MoxaPortIsValid(int port
)
1941 if (moxa_ports
[port
].chkPort
== 0)
1946 void MoxaPortEnable(int port
)
1948 void __iomem
*ofsAddr
;
1949 int MoxaPortLineStatus(int);
1950 short lowwater
= 512;
1952 ofsAddr
= moxa_ports
[port
].tableAddr
;
1953 writew(lowwater
, ofsAddr
+ Low_water
);
1954 moxa_ports
[port
].breakCnt
= 0;
1955 if ((moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_ISA
) ||
1956 (moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_PCI
)) {
1957 moxafunc(ofsAddr
, FC_SetBreakIrq
, 0);
1959 writew(readw(ofsAddr
+ HostStat
) | WakeupBreak
, ofsAddr
+ HostStat
);
1962 moxafunc(ofsAddr
, FC_SetLineIrq
, Magic_code
);
1963 moxafunc(ofsAddr
, FC_FlushQueue
, 2);
1965 moxafunc(ofsAddr
, FC_EnableCH
, Magic_code
);
1966 MoxaPortLineStatus(port
);
1969 void MoxaPortDisable(int port
)
1971 void __iomem
*ofsAddr
= moxa_ports
[port
].tableAddr
;
1973 moxafunc(ofsAddr
, FC_SetFlowCtl
, 0); /* disable flow control */
1974 moxafunc(ofsAddr
, FC_ClrLineIrq
, Magic_code
);
1975 writew(0, ofsAddr
+ HostStat
);
1976 moxafunc(ofsAddr
, FC_DisableCH
, Magic_code
);
1979 long MoxaPortGetMaxBaud(int port
)
1981 if ((moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_ISA
) ||
1982 (moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_PCI
))
1989 long MoxaPortSetBaud(int port
, long baud
)
1991 void __iomem
*ofsAddr
;
1995 if ((baud
< 50L) || ((max
= MoxaPortGetMaxBaud(port
)) == 0))
1997 ofsAddr
= moxa_ports
[port
].tableAddr
;
2001 clock
= 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2002 else if (max
== 57600L)
2003 clock
= 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2005 clock
= 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2007 moxafunc(ofsAddr
, FC_SetBaud
, val
);
2009 moxa_ports
[port
].curBaud
= baud
;
2013 int MoxaPortSetTermio(int port
, struct ktermios
*termio
, speed_t baud
)
2015 void __iomem
*ofsAddr
;
2019 if (moxa_ports
[port
].chkPort
== 0 || termio
== 0)
2021 ofsAddr
= moxa_ports
[port
].tableAddr
;
2022 cflag
= termio
->c_cflag
; /* termio->c_cflag */
2024 mode
= termio
->c_cflag
& CSIZE
;
2027 else if (mode
== CS6
)
2029 else if (mode
== CS7
)
2031 else if (mode
== CS8
)
2034 if (termio
->c_cflag
& CSTOPB
) {
2042 if (termio
->c_cflag
& PARENB
) {
2043 if (termio
->c_cflag
& PARODD
)
2050 moxafunc(ofsAddr
, FC_SetDataMode
, (ushort
) mode
);
2052 if ((moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_ISA
) ||
2053 (moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_PCI
)) {
2054 if (baud
>= 921600L)
2057 baud
= MoxaPortSetBaud(port
, baud
);
2059 if (termio
->c_iflag
& (IXON
| IXOFF
| IXANY
)) {
2060 writeb(termio
->c_cc
[VSTART
], ofsAddr
+ FuncArg
);
2061 writeb(termio
->c_cc
[VSTOP
], ofsAddr
+ FuncArg1
);
2062 writeb(FC_SetXonXoff
, ofsAddr
+ FuncCode
);
2063 moxa_wait_finish(ofsAddr
);
2069 int MoxaPortGetLineOut(int port
, int *dtrState
, int *rtsState
)
2072 if (!MoxaPortIsValid(port
))
2075 if (moxa_ports
[port
].lineCtrl
& DTR_ON
)
2081 if (moxa_ports
[port
].lineCtrl
& RTS_ON
)
2089 void MoxaPortLineCtrl(int port
, int dtr
, int rts
)
2091 void __iomem
*ofsAddr
;
2094 ofsAddr
= moxa_ports
[port
].tableAddr
;
2100 moxa_ports
[port
].lineCtrl
= mode
;
2101 moxafunc(ofsAddr
, FC_LineControl
, mode
);
2104 void MoxaPortFlowCtrl(int port
, int rts
, int cts
, int txflow
, int rxflow
, int txany
)
2106 void __iomem
*ofsAddr
;
2109 ofsAddr
= moxa_ports
[port
].tableAddr
;
2112 mode
|= RTS_FlowCtl
;
2114 mode
|= CTS_FlowCtl
;
2121 moxafunc(ofsAddr
, FC_SetFlowCtl
, mode
);
2124 int MoxaPortLineStatus(int port
)
2126 void __iomem
*ofsAddr
;
2129 ofsAddr
= moxa_ports
[port
].tableAddr
;
2130 if ((moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_ISA
) ||
2131 (moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].boardType
== MOXA_BOARD_C320_PCI
)) {
2132 moxafunc(ofsAddr
, FC_LineStatus
, 0);
2133 val
= readw(ofsAddr
+ FuncArg
);
2135 val
= readw(ofsAddr
+ FlagStat
) >> 4;
2140 if ((moxa_ports
[port
].DCDState
& DCD_oldstate
) == 0)
2141 moxa_ports
[port
].DCDState
= (DCD_oldstate
| DCD_changed
);
2143 if (moxa_ports
[port
].DCDState
& DCD_oldstate
)
2144 moxa_ports
[port
].DCDState
= DCD_changed
;
2150 int MoxaPortDCDChange(int port
)
2154 if (moxa_ports
[port
].chkPort
== 0)
2156 n
= moxa_ports
[port
].DCDState
;
2157 moxa_ports
[port
].DCDState
&= ~DCD_changed
;
2162 int MoxaPortDCDON(int port
)
2166 if (moxa_ports
[port
].chkPort
== 0)
2168 if (moxa_ports
[port
].DCDState
& DCD_oldstate
)
2175 int MoxaPortWriteData(int port
, unsigned char * buffer
, int len
)
2180 ushort head
, tx_mask
, spage
, epage
;
2181 ushort pageno
, pageofs
, bufhead
;
2182 void __iomem
*baseAddr
, *ofsAddr
, *ofs
;
2184 ofsAddr
= moxa_ports
[port
].tableAddr
;
2185 baseAddr
= moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].basemem
;
2186 tx_mask
= readw(ofsAddr
+ TX_mask
);
2187 spage
= readw(ofsAddr
+ Page_txb
);
2188 epage
= readw(ofsAddr
+ EndPage_txb
);
2189 tail
= readw(ofsAddr
+ TXwptr
);
2190 head
= readw(ofsAddr
+ TXrptr
);
2191 c
= (head
> tail
) ? (head
- tail
- 1)
2192 : (head
- tail
+ tx_mask
);
2195 moxaLog
.txcnt
[port
] += c
;
2197 if (spage
== epage
) {
2198 bufhead
= readw(ofsAddr
+ Ofs_txb
);
2199 writew(spage
, baseAddr
+ Control_reg
);
2202 len
= head
- tail
- 1;
2204 len
= tx_mask
+ 1 - tail
;
2205 len
= (c
> len
) ? len
: c
;
2206 ofs
= baseAddr
+ DynPage_addr
+ bufhead
+ tail
;
2207 for (i
= 0; i
< len
; i
++)
2208 writeb(*buffer
++, ofs
+ i
);
2209 tail
= (tail
+ len
) & tx_mask
;
2212 writew(tail
, ofsAddr
+ TXwptr
);
2215 pageno
= spage
+ (tail
>> 13);
2216 pageofs
= tail
& Page_mask
;
2218 cnt
= Page_size
- pageofs
;
2222 writeb(pageno
, baseAddr
+ Control_reg
);
2223 ofs
= baseAddr
+ DynPage_addr
+ pageofs
;
2224 for (i
= 0; i
< cnt
; i
++)
2225 writeb(*buffer
++, ofs
+ i
);
2227 writew((tail
+ len
) & tx_mask
, ofsAddr
+ TXwptr
);
2230 if (++pageno
== epage
)
2235 writeb(1, ofsAddr
+ CD180TXirq
); /* start to send */
2239 int MoxaPortReadData(int port
, struct tty_struct
*tty
)
2241 register ushort head
, pageofs
;
2242 int i
, count
, cnt
, len
, total
, remain
;
2243 ushort tail
, rx_mask
, spage
, epage
;
2244 ushort pageno
, bufhead
;
2245 void __iomem
*baseAddr
, *ofsAddr
, *ofs
;
2247 ofsAddr
= moxa_ports
[port
].tableAddr
;
2248 baseAddr
= moxa_boards
[port
/ MAX_PORTS_PER_BOARD
].basemem
;
2249 head
= readw(ofsAddr
+ RXrptr
);
2250 tail
= readw(ofsAddr
+ RXwptr
);
2251 rx_mask
= readw(ofsAddr
+ RX_mask
);
2252 spage
= readw(ofsAddr
+ Page_rxb
);
2253 epage
= readw(ofsAddr
+ EndPage_rxb
);
2254 count
= (tail
>= head
) ? (tail
- head
)
2255 : (tail
- head
+ rx_mask
+ 1);
2260 remain
= count
- total
;
2261 moxaLog
.rxcnt
[port
] += total
;
2263 if (spage
== epage
) {
2264 bufhead
= readw(ofsAddr
+ Ofs_rxb
);
2265 writew(spage
, baseAddr
+ Control_reg
);
2270 len
= rx_mask
+ 1 - head
;
2271 len
= (count
> len
) ? len
: count
;
2272 ofs
= baseAddr
+ DynPage_addr
+ bufhead
+ head
;
2273 for (i
= 0; i
< len
; i
++)
2274 tty_insert_flip_char(tty
, readb(ofs
+ i
), TTY_NORMAL
);
2275 head
= (head
+ len
) & rx_mask
;
2278 writew(head
, ofsAddr
+ RXrptr
);
2281 pageno
= spage
+ (head
>> 13);
2282 pageofs
= head
& Page_mask
;
2284 cnt
= Page_size
- pageofs
;
2288 writew(pageno
, baseAddr
+ Control_reg
);
2289 ofs
= baseAddr
+ DynPage_addr
+ pageofs
;
2290 for (i
= 0; i
< cnt
; i
++)
2291 tty_insert_flip_char(tty
, readb(ofs
+ i
), TTY_NORMAL
);
2293 writew((head
+ len
) & rx_mask
, ofsAddr
+ RXrptr
);
2296 if (++pageno
== epage
)
2301 if ((readb(ofsAddr
+ FlagStat
) & Xoff_state
) && (remain
< LowWater
)) {
2302 moxaLowWaterChk
= 1;
2303 moxa_ports
[port
].lowChkFlag
= 1;
2309 int MoxaPortTxQueue(int port
)
2311 void __iomem
*ofsAddr
;
2312 ushort rptr
, wptr
, mask
;
2315 ofsAddr
= moxa_ports
[port
].tableAddr
;
2316 rptr
= readw(ofsAddr
+ TXrptr
);
2317 wptr
= readw(ofsAddr
+ TXwptr
);
2318 mask
= readw(ofsAddr
+ TX_mask
);
2319 len
= (wptr
- rptr
) & mask
;
2323 int MoxaPortTxFree(int port
)
2325 void __iomem
*ofsAddr
;
2326 ushort rptr
, wptr
, mask
;
2329 ofsAddr
= moxa_ports
[port
].tableAddr
;
2330 rptr
= readw(ofsAddr
+ TXrptr
);
2331 wptr
= readw(ofsAddr
+ TXwptr
);
2332 mask
= readw(ofsAddr
+ TX_mask
);
2333 len
= mask
- ((wptr
- rptr
) & mask
);
2337 int MoxaPortRxQueue(int port
)
2339 void __iomem
*ofsAddr
;
2340 ushort rptr
, wptr
, mask
;
2343 ofsAddr
= moxa_ports
[port
].tableAddr
;
2344 rptr
= readw(ofsAddr
+ RXrptr
);
2345 wptr
= readw(ofsAddr
+ RXwptr
);
2346 mask
= readw(ofsAddr
+ RX_mask
);
2347 len
= (wptr
- rptr
) & mask
;
2352 void MoxaPortTxDisable(int port
)
2354 void __iomem
*ofsAddr
;
2356 ofsAddr
= moxa_ports
[port
].tableAddr
;
2357 moxafunc(ofsAddr
, FC_SetXoffState
, Magic_code
);
2360 void MoxaPortTxEnable(int port
)
2362 void __iomem
*ofsAddr
;
2364 ofsAddr
= moxa_ports
[port
].tableAddr
;
2365 moxafunc(ofsAddr
, FC_SetXonState
, Magic_code
);
2369 int MoxaPortResetBrkCnt(int port
)
2372 cnt
= moxa_ports
[port
].breakCnt
;
2373 moxa_ports
[port
].breakCnt
= 0;
2378 void MoxaPortSendBreak(int port
, int ms100
)
2380 void __iomem
*ofsAddr
;
2382 ofsAddr
= moxa_ports
[port
].tableAddr
;
2384 moxafunc(ofsAddr
, FC_SendBreak
, Magic_code
);
2387 moxafunc(ofsAddr
, FC_SendBreak
, Magic_code
);
2390 moxafunc(ofsAddr
, FC_StopBreak
, Magic_code
);
2393 static int moxa_get_serial_info(struct moxa_port
*info
,
2394 struct serial_struct __user
*retinfo
)
2396 struct serial_struct tmp
;
2398 memset(&tmp
, 0, sizeof(tmp
));
2399 tmp
.type
= info
->type
;
2400 tmp
.line
= info
->port
;
2403 tmp
.flags
= info
->asyncflags
;
2404 tmp
.baud_base
= 921600;
2405 tmp
.close_delay
= info
->close_delay
;
2406 tmp
.closing_wait
= info
->closing_wait
;
2407 tmp
.custom_divisor
= 0;
2409 if(copy_to_user(retinfo
, &tmp
, sizeof(*retinfo
)))
2415 static int moxa_set_serial_info(struct moxa_port
*info
,
2416 struct serial_struct __user
*new_info
)
2418 struct serial_struct new_serial
;
2420 if(copy_from_user(&new_serial
, new_info
, sizeof(new_serial
)))
2423 if ((new_serial
.irq
!= 0) ||
2424 (new_serial
.port
!= 0) ||
2425 // (new_serial.type != info->type) ||
2426 (new_serial
.custom_divisor
!= 0) ||
2427 (new_serial
.baud_base
!= 921600))
2430 if (!capable(CAP_SYS_ADMIN
)) {
2431 if (((new_serial
.flags
& ~ASYNC_USR_MASK
) !=
2432 (info
->asyncflags
& ~ASYNC_USR_MASK
)))
2435 info
->close_delay
= new_serial
.close_delay
* HZ
/ 100;
2436 info
->closing_wait
= new_serial
.closing_wait
* HZ
/ 100;
2439 new_serial
.flags
= (new_serial
.flags
& ~ASYNC_FLAGS
);
2440 new_serial
.flags
|= (info
->asyncflags
& ASYNC_FLAGS
);
2442 if (new_serial
.type
== PORT_16550A
) {
2443 MoxaSetFifo(info
->port
, 1);
2445 MoxaSetFifo(info
->port
, 0);
2448 info
->type
= new_serial
.type
;
2454 /*****************************************************************************
2455 * Static local functions: *
2456 *****************************************************************************/
2457 static void moxafunc(void __iomem
*ofsAddr
, int cmd
, ushort arg
)
2460 writew(arg
, ofsAddr
+ FuncArg
);
2461 writew(cmd
, ofsAddr
+ FuncCode
);
2462 moxa_wait_finish(ofsAddr
);
2465 static void moxa_wait_finish(void __iomem
*ofsAddr
)
2470 while (readw(ofsAddr
+ FuncCode
) != 0) {
2472 if ((j
- i
) > moxaFuncTout
) {
2478 static void moxa_low_water_check(void __iomem
*ofsAddr
)
2481 ushort rptr
, wptr
, mask
;
2483 if (readb(ofsAddr
+ FlagStat
) & Xoff_state
) {
2484 rptr
= readw(ofsAddr
+ RXrptr
);
2485 wptr
= readw(ofsAddr
+ RXwptr
);
2486 mask
= readw(ofsAddr
+ RX_mask
);
2487 len
= (wptr
- rptr
) & mask
;
2488 if (len
<= Low_water
)
2489 moxafunc(ofsAddr
, FC_SendXon
, 0);
2493 static int moxaloadbios(int cardno
, unsigned char __user
*tmp
, int len
)
2495 void __iomem
*baseAddr
;
2498 if(len
< 0 || len
> sizeof(moxaBuff
))
2500 if(copy_from_user(moxaBuff
, tmp
, len
))
2502 baseAddr
= moxa_boards
[cardno
].basemem
;
2503 writeb(HW_reset
, baseAddr
+ Control_reg
); /* reset */
2505 for (i
= 0; i
< 4096; i
++)
2506 writeb(0, baseAddr
+ i
); /* clear fix page */
2507 for (i
= 0; i
< len
; i
++)
2508 writeb(moxaBuff
[i
], baseAddr
+ i
); /* download BIOS */
2509 writeb(0, baseAddr
+ Control_reg
); /* restart */
2513 static int moxafindcard(int cardno
)
2515 void __iomem
*baseAddr
;
2518 baseAddr
= moxa_boards
[cardno
].basemem
;
2519 switch (moxa_boards
[cardno
].boardType
) {
2520 case MOXA_BOARD_C218_ISA
:
2521 case MOXA_BOARD_C218_PCI
:
2522 if ((tmp
= readw(baseAddr
+ C218_key
)) != C218_KeyCode
) {
2526 case MOXA_BOARD_CP204J
:
2527 if ((tmp
= readw(baseAddr
+ C218_key
)) != CP204J_KeyCode
) {
2532 if ((tmp
= readw(baseAddr
+ C320_key
)) != C320_KeyCode
) {
2535 if ((tmp
= readw(baseAddr
+ C320_status
)) != STS_init
) {
2542 static int moxaload320b(int cardno
, unsigned char __user
*tmp
, int len
)
2544 void __iomem
*baseAddr
;
2547 if(len
< 0 || len
> sizeof(moxaBuff
))
2549 if(copy_from_user(moxaBuff
, tmp
, len
))
2551 baseAddr
= moxa_boards
[cardno
].basemem
;
2552 writew(len
- 7168 - 2, baseAddr
+ C320bapi_len
);
2553 writeb(1, baseAddr
+ Control_reg
); /* Select Page 1 */
2554 for (i
= 0; i
< 7168; i
++)
2555 writeb(moxaBuff
[i
], baseAddr
+ DynPage_addr
+ i
);
2556 writeb(2, baseAddr
+ Control_reg
); /* Select Page 2 */
2557 for (i
= 0; i
< (len
- 7168); i
++)
2558 writeb(moxaBuff
[i
+ 7168], baseAddr
+ DynPage_addr
+ i
);
2562 static int moxaloadcode(int cardno
, unsigned char __user
*tmp
, int len
)
2564 void __iomem
*baseAddr
, *ofsAddr
;
2565 int retval
, port
, i
;
2567 if(len
< 0 || len
> sizeof(moxaBuff
))
2569 if(copy_from_user(moxaBuff
, tmp
, len
))
2571 baseAddr
= moxa_boards
[cardno
].basemem
;
2572 switch (moxa_boards
[cardno
].boardType
) {
2573 case MOXA_BOARD_C218_ISA
:
2574 case MOXA_BOARD_C218_PCI
:
2575 case MOXA_BOARD_CP204J
:
2576 retval
= moxaloadc218(cardno
, baseAddr
, len
);
2579 port
= cardno
* MAX_PORTS_PER_BOARD
;
2580 for (i
= 0; i
< moxa_boards
[cardno
].numPorts
; i
++, port
++) {
2581 struct moxa_port
*p
= &moxa_ports
[port
];
2586 p
->tableAddr
= baseAddr
+ Extern_table
+ Extern_size
* i
;
2587 ofsAddr
= p
->tableAddr
;
2588 writew(C218rx_mask
, ofsAddr
+ RX_mask
);
2589 writew(C218tx_mask
, ofsAddr
+ TX_mask
);
2590 writew(C218rx_spage
+ i
* C218buf_pageno
, ofsAddr
+ Page_rxb
);
2591 writew(readw(ofsAddr
+ Page_rxb
) + C218rx_pageno
, ofsAddr
+ EndPage_rxb
);
2593 writew(C218tx_spage
+ i
* C218buf_pageno
, ofsAddr
+ Page_txb
);
2594 writew(readw(ofsAddr
+ Page_txb
) + C218tx_pageno
, ofsAddr
+ EndPage_txb
);
2599 retval
= moxaloadc320(cardno
, baseAddr
, len
,
2600 &moxa_boards
[cardno
].numPorts
);
2603 port
= cardno
* MAX_PORTS_PER_BOARD
;
2604 for (i
= 0; i
< moxa_boards
[cardno
].numPorts
; i
++, port
++) {
2605 struct moxa_port
*p
= &moxa_ports
[port
];
2610 p
->tableAddr
= baseAddr
+ Extern_table
+ Extern_size
* i
;
2611 ofsAddr
= p
->tableAddr
;
2612 if (moxa_boards
[cardno
].numPorts
== 8) {
2613 writew(C320p8rx_mask
, ofsAddr
+ RX_mask
);
2614 writew(C320p8tx_mask
, ofsAddr
+ TX_mask
);
2615 writew(C320p8rx_spage
+ i
* C320p8buf_pgno
, ofsAddr
+ Page_rxb
);
2616 writew(readw(ofsAddr
+ Page_rxb
) + C320p8rx_pgno
, ofsAddr
+ EndPage_rxb
);
2617 writew(C320p8tx_spage
+ i
* C320p8buf_pgno
, ofsAddr
+ Page_txb
);
2618 writew(readw(ofsAddr
+ Page_txb
) + C320p8tx_pgno
, ofsAddr
+ EndPage_txb
);
2620 } else if (moxa_boards
[cardno
].numPorts
== 16) {
2621 writew(C320p16rx_mask
, ofsAddr
+ RX_mask
);
2622 writew(C320p16tx_mask
, ofsAddr
+ TX_mask
);
2623 writew(C320p16rx_spage
+ i
* C320p16buf_pgno
, ofsAddr
+ Page_rxb
);
2624 writew(readw(ofsAddr
+ Page_rxb
) + C320p16rx_pgno
, ofsAddr
+ EndPage_rxb
);
2625 writew(C320p16tx_spage
+ i
* C320p16buf_pgno
, ofsAddr
+ Page_txb
);
2626 writew(readw(ofsAddr
+ Page_txb
) + C320p16tx_pgno
, ofsAddr
+ EndPage_txb
);
2628 } else if (moxa_boards
[cardno
].numPorts
== 24) {
2629 writew(C320p24rx_mask
, ofsAddr
+ RX_mask
);
2630 writew(C320p24tx_mask
, ofsAddr
+ TX_mask
);
2631 writew(C320p24rx_spage
+ i
* C320p24buf_pgno
, ofsAddr
+ Page_rxb
);
2632 writew(readw(ofsAddr
+ Page_rxb
) + C320p24rx_pgno
, ofsAddr
+ EndPage_rxb
);
2633 writew(C320p24tx_spage
+ i
* C320p24buf_pgno
, ofsAddr
+ Page_txb
);
2634 writew(readw(ofsAddr
+ Page_txb
), ofsAddr
+ EndPage_txb
);
2635 } else if (moxa_boards
[cardno
].numPorts
== 32) {
2636 writew(C320p32rx_mask
, ofsAddr
+ RX_mask
);
2637 writew(C320p32tx_mask
, ofsAddr
+ TX_mask
);
2638 writew(C320p32tx_ofs
, ofsAddr
+ Ofs_txb
);
2639 writew(C320p32rx_spage
+ i
* C320p32buf_pgno
, ofsAddr
+ Page_rxb
);
2640 writew(readb(ofsAddr
+ Page_rxb
), ofsAddr
+ EndPage_rxb
);
2641 writew(C320p32tx_spage
+ i
* C320p32buf_pgno
, ofsAddr
+ Page_txb
);
2642 writew(readw(ofsAddr
+ Page_txb
), ofsAddr
+ EndPage_txb
);
2647 moxa_boards
[cardno
].loadstat
= 1;
2651 static int moxaloadc218(int cardno
, void __iomem
*baseAddr
, int len
)
2654 int i
, j
, len1
, len2
;
2655 ushort usum
, *ptr
, keycode
;
2657 if (moxa_boards
[cardno
].boardType
== MOXA_BOARD_CP204J
)
2658 keycode
= CP204J_KeyCode
;
2660 keycode
= C218_KeyCode
;
2663 ptr
= (ushort
*) moxaBuff
;
2664 for (i
= 0; i
< len1
; i
++)
2665 usum
+= le16_to_cpu(*(ptr
+ i
));
2671 len2
= (len1
> 2048) ? 2048 : len1
;
2673 for (i
= 0; i
< len2
<< 1; i
++)
2674 writeb(moxaBuff
[i
+ j
], baseAddr
+ C218_LoadBuf
+ i
);
2677 writew(len2
, baseAddr
+ C218DLoad_len
);
2678 writew(0, baseAddr
+ C218_key
);
2679 for (i
= 0; i
< 100; i
++) {
2680 if (readw(baseAddr
+ C218_key
) == keycode
)
2684 if (readw(baseAddr
+ C218_key
) != keycode
) {
2688 writew(0, baseAddr
+ C218DLoad_len
);
2689 writew(usum
, baseAddr
+ C218check_sum
);
2690 writew(0, baseAddr
+ C218_key
);
2691 for (i
= 0; i
< 100; i
++) {
2692 if (readw(baseAddr
+ C218_key
) == keycode
)
2697 } while ((readb(baseAddr
+ C218chksum_ok
) != 1) && (retry
< 3));
2698 if (readb(baseAddr
+ C218chksum_ok
) != 1) {
2701 writew(0, baseAddr
+ C218_key
);
2702 for (i
= 0; i
< 100; i
++) {
2703 if (readw(baseAddr
+ Magic_no
) == Magic_code
)
2707 if (readw(baseAddr
+ Magic_no
) != Magic_code
) {
2710 writew(1, baseAddr
+ Disable_IRQ
);
2711 writew(0, baseAddr
+ Magic_no
);
2712 for (i
= 0; i
< 100; i
++) {
2713 if (readw(baseAddr
+ Magic_no
) == Magic_code
)
2717 if (readw(baseAddr
+ Magic_no
) != Magic_code
) {
2721 moxa_boards
[cardno
].intNdx
= baseAddr
+ IRQindex
;
2722 moxa_boards
[cardno
].intPend
= baseAddr
+ IRQpending
;
2723 moxa_boards
[cardno
].intTable
= baseAddr
+ IRQtable
;
2727 static int moxaloadc320(int cardno
, void __iomem
*baseAddr
, int len
, int *numPorts
)
2730 int i
, j
, wlen
, len2
, retry
;
2735 uptr
= (ushort
*) moxaBuff
;
2736 for (i
= 0; i
< wlen
; i
++)
2737 usum
+= le16_to_cpu(uptr
[i
]);
2748 for (i
= 0; i
< len2
; i
++)
2749 writeb(moxaBuff
[j
+ i
], baseAddr
+ C320_LoadBuf
+ i
);
2752 writew(len2
, baseAddr
+ C320DLoad_len
);
2753 writew(0, baseAddr
+ C320_key
);
2754 for (i
= 0; i
< 10; i
++) {
2755 if (readw(baseAddr
+ C320_key
) == C320_KeyCode
)
2759 if (readw(baseAddr
+ C320_key
) != C320_KeyCode
)
2762 writew(0, baseAddr
+ C320DLoad_len
);
2763 writew(usum
, baseAddr
+ C320check_sum
);
2764 writew(0, baseAddr
+ C320_key
);
2765 for (i
= 0; i
< 10; i
++) {
2766 if (readw(baseAddr
+ C320_key
) == C320_KeyCode
)
2771 } while ((readb(baseAddr
+ C320chksum_ok
) != 1) && (retry
< 3));
2772 if (readb(baseAddr
+ C320chksum_ok
) != 1)
2774 writew(0, baseAddr
+ C320_key
);
2775 for (i
= 0; i
< 600; i
++) {
2776 if (readw(baseAddr
+ Magic_no
) == Magic_code
)
2780 if (readw(baseAddr
+ Magic_no
) != Magic_code
)
2783 if (moxa_boards
[cardno
].busType
== MOXA_BUS_TYPE_PCI
) { /* ASIC board */
2784 writew(0x3800, baseAddr
+ TMS320_PORT1
);
2785 writew(0x3900, baseAddr
+ TMS320_PORT2
);
2786 writew(28499, baseAddr
+ TMS320_CLOCK
);
2788 writew(0x3200, baseAddr
+ TMS320_PORT1
);
2789 writew(0x3400, baseAddr
+ TMS320_PORT2
);
2790 writew(19999, baseAddr
+ TMS320_CLOCK
);
2792 writew(1, baseAddr
+ Disable_IRQ
);
2793 writew(0, baseAddr
+ Magic_no
);
2794 for (i
= 0; i
< 500; i
++) {
2795 if (readw(baseAddr
+ Magic_no
) == Magic_code
)
2799 if (readw(baseAddr
+ Magic_no
) != Magic_code
)
2802 j
= readw(baseAddr
+ Module_cnt
);
2806 writew(j
, baseAddr
+ Module_no
);
2807 writew(0, baseAddr
+ Magic_no
);
2808 for (i
= 0; i
< 600; i
++) {
2809 if (readw(baseAddr
+ Magic_no
) == Magic_code
)
2813 if (readw(baseAddr
+ Magic_no
) != Magic_code
)
2816 moxa_boards
[cardno
].intNdx
= baseAddr
+ IRQindex
;
2817 moxa_boards
[cardno
].intPend
= baseAddr
+ IRQpending
;
2818 moxa_boards
[cardno
].intTable
= baseAddr
+ IRQtable
;
2822 static void MoxaSetFifo(int port
, int enable
)
2824 void __iomem
*ofsAddr
= moxa_ports
[port
].tableAddr
;
2827 moxafunc(ofsAddr
, FC_SetRxFIFOTrig
, 0);
2828 moxafunc(ofsAddr
, FC_SetTxFIFOCnt
, 1);
2830 moxafunc(ofsAddr
, FC_SetRxFIFOTrig
, 3);
2831 moxafunc(ofsAddr
, FC_SetTxFIFOCnt
, 16);