2 * mxser.c -- MOXA Smartio/Industio family multiport serial driver.
4 * Copyright (C) 1999-2001 Moxa Technologies (support@moxa.com.tw).
6 * This code is loosely based on the Linux serial driver, written by
7 * Linus Torvalds, Theodore T'so and others.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 * Original release 10/26/00
25 * 02/06/01 Support MOXA Industio family boards.
26 * 02/06/01 Support TIOCGICOUNT.
27 * 02/06/01 Fix the problem for connecting to serial mouse.
28 * 02/06/01 Fix the problem for H/W flow control.
29 * 02/06/01 Fix the compling warning when CONFIG_PCI
32 * Fed through a cleanup, indent and remove of non 2.6 code by Alan Cox
33 * <alan@redhat.com>. The original 1.8 code is available on www.moxa.com.
34 * - Fixed x86_64 cleanness
35 * - Fixed sleep with spinlock held in mxser_send_break
39 #include <linux/module.h>
40 #include <linux/errno.h>
41 #include <linux/signal.h>
42 #include <linux/sched.h>
43 #include <linux/timer.h>
44 #include <linux/interrupt.h>
45 #include <linux/tty.h>
46 #include <linux/tty_flip.h>
47 #include <linux/serial.h>
48 #include <linux/serial_reg.h>
49 #include <linux/major.h>
50 #include <linux/string.h>
51 #include <linux/fcntl.h>
52 #include <linux/ptrace.h>
53 #include <linux/gfp.h>
54 #include <linux/ioport.h>
56 #include <linux/delay.h>
57 #include <linux/pci.h>
58 #include <linux/bitops.h>
60 #include <asm/system.h>
63 #include <asm/uaccess.h>
67 #define MXSER_VERSION "1.8"
68 #define MXSERMAJOR 174
69 #define MXSERCUMAJOR 175
71 #define MXSER_EVENT_TXLOW 1
72 #define MXSER_EVENT_HANGUP 2
74 #define MXSER_BOARDS 4 /* Max. boards */
75 #define MXSER_PORTS 32 /* Max. ports */
76 #define MXSER_PORTS_PER_BOARD 8 /* Max. ports per board */
77 #define MXSER_ISR_PASS_LIMIT 256
79 #define MXSER_ERR_IOADDR -1
80 #define MXSER_ERR_IRQ -2
81 #define MXSER_ERR_IRQ_CONFLIT -3
82 #define MXSER_ERR_VECTOR -4
84 #define SERIAL_TYPE_NORMAL 1
85 #define SERIAL_TYPE_CALLOUT 2
87 #define WAKEUP_CHARS 256
89 #define UART_MCR_AFE 0x20
90 #define UART_LSR_SPECIAL 0x1E
93 #define IRQ_T(info) ((info->flags & ASYNC_SHARE_IRQ) ? IRQF_SHARED : IRQF_DISABLED)
95 #define C168_ASIC_ID 1
96 #define C104_ASIC_ID 2
97 #define C102_ASIC_ID 0xB
98 #define CI132_ASIC_ID 4
99 #define CI134_ASIC_ID 3
100 #define CI104J_ASIC_ID 5
103 MXSER_BOARD_C168_ISA
= 1,
104 MXSER_BOARD_C104_ISA
,
106 MXSER_BOARD_C168_PCI
,
107 MXSER_BOARD_C104_PCI
,
108 MXSER_BOARD_C102_ISA
,
126 static char *mxser_brdname
[] = {
144 "Moxa UC7000 Serial",
150 static int mxser_numports
[] = {
174 #define UART_TYPE_NUM 2
176 static const unsigned int Gmoxa_uart_id
[UART_TYPE_NUM
] = {
177 MOXA_MUST_MU150_HWID
,
181 /* This is only for PCI */
182 #define UART_INFO_NUM 3
183 struct mxpciuart_info
{
194 static const struct mxpciuart_info Gpci_uart_info
[UART_INFO_NUM
] = {
195 {MOXA_OTHER_UART
, 16, 16, 16, 14, 14, 1, 921600L},
196 {MOXA_MUST_MU150_HWID
, 64, 64, 64, 48, 48, 16, 230400L},
197 {MOXA_MUST_MU860_HWID
, 128, 128, 128, 96, 96, 32, 921600L}
203 static struct pci_device_id mxser_pcibrds
[] = {
204 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_C168
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_C168_PCI
},
205 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_C104
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_C104_PCI
},
206 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP132
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP132
},
207 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP114
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP114
},
208 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CT114
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CT114
},
209 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP102
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP102
},
210 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP104U
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP104U
},
211 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP168U
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP168U
},
212 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP132U
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP132U
},
213 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP134U
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP134U
},
214 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP104JU
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP104JU
},
215 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_RC7000
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_RC7000
},
216 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP118U
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP118U
},
217 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP102UL
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP102UL
},
218 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP102U
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP102U
},
222 MODULE_DEVICE_TABLE(pci
, mxser_pcibrds
);
227 typedef struct _moxa_pci_info
{
228 unsigned short busNum
;
229 unsigned short devNum
;
230 struct pci_dev
*pdev
; /* add by Victor Yu. 06-23-2003 */
233 static int ioaddr
[MXSER_BOARDS
] = { 0, 0, 0, 0 };
234 static int ttymajor
= MXSERMAJOR
;
235 static int calloutmajor
= MXSERCUMAJOR
;
236 static int verbose
= 0;
238 /* Variables for insmod */
240 MODULE_AUTHOR("Casper Yang");
241 MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver");
242 module_param_array(ioaddr
, int, NULL
, 0);
243 module_param(ttymajor
, int, 0);
244 module_param(calloutmajor
, int, 0);
245 module_param(verbose
, bool, 0);
246 MODULE_LICENSE("GPL");
250 unsigned long rxcnt
[MXSER_PORTS
];
251 unsigned long txcnt
[MXSER_PORTS
];
258 unsigned long up_rxcnt
;
259 unsigned long up_txcnt
;
261 unsigned char hold_reason
;
264 struct mxser_mon_ext
{
265 unsigned long rx_cnt
[32];
266 unsigned long tx_cnt
[32];
267 unsigned long up_rxcnt
[32];
268 unsigned long up_txcnt
[32];
269 int modem_status
[32];
280 struct mxser_hwconf
{
287 int ioaddr
[MXSER_PORTS_PER_BOARD
];
288 int baud_base
[MXSER_PORTS_PER_BOARD
];
289 moxa_pci_info pciInfo
;
290 int IsMoxaMustChipFlag
; /* add by Victor Yu. 08-30-2002 */
291 int MaxCanSetBaudRate
[MXSER_PORTS_PER_BOARD
]; /* add by Victor Yu. 09-04-2002 */
292 int opmode_ioaddr
[MXSER_PORTS_PER_BOARD
]; /* add by Victor Yu. 01-05-2004 */
295 struct mxser_struct
{
297 int base
; /* port base address */
298 int irq
; /* port using irq no. */
299 int vector
; /* port irq vector */
300 int vectormask
; /* port vector mask */
302 int rx_trigger
; /* Rx fifo trigger level */
304 int baud_base
; /* max. speed */
305 int flags
; /* defined in tty.h */
306 int type
; /* UART type */
307 struct tty_struct
*tty
;
308 int read_status_mask
;
309 int ignore_status_mask
;
312 int x_char
; /* xon/xoff character */
314 unsigned short closing_wait
;
315 int IER
; /* Interrupt Enable Register */
316 int MCR
; /* Modem control register */
318 int count
; /* # of fd on device */
319 int blocked_open
; /* # of blocked opens */
320 unsigned char *xmit_buf
;
324 struct work_struct tqueue
;
325 struct ktermios normal_termios
;
326 struct ktermios callout_termios
;
327 wait_queue_head_t open_wait
;
328 wait_queue_head_t close_wait
;
329 wait_queue_head_t delta_msr_wait
;
330 struct async_icount icount
; /* kernel counters for the 4 input interrupts */
332 int IsMoxaMustChipFlag
; /* add by Victor Yu. 08-30-2002 */
333 int MaxCanSetBaudRate
; /* add by Victor Yu. 09-04-2002 */
334 int opmode_ioaddr
; /* add by Victor Yu. 01-05-2004 */
335 unsigned char stop_rx
;
336 unsigned char ldisc_stop_rx
;
338 struct mxser_mon mon_data
;
339 unsigned char err_shadow
;
343 struct mxser_mstatus
{
351 static struct mxser_mstatus GMStatus
[MXSER_PORTS
];
353 static int mxserBoardCAP
[MXSER_BOARDS
] = {
355 /* 0x180, 0x280, 0x200, 0x320 */
358 static struct tty_driver
*mxvar_sdriver
;
359 static struct mxser_struct mxvar_table
[MXSER_PORTS
];
360 static struct tty_struct
*mxvar_tty
[MXSER_PORTS
+ 1];
361 static struct ktermios
*mxvar_termios
[MXSER_PORTS
+ 1];
362 static struct ktermios
*mxvar_termios_locked
[MXSER_PORTS
+ 1];
363 static struct mxser_log mxvar_log
;
364 static int mxvar_diagflag
;
365 static unsigned char mxser_msr
[MXSER_PORTS
+ 1];
366 static struct mxser_mon_ext mon_data_ext
;
367 static int mxser_set_baud_method
[MXSER_PORTS
+ 1];
368 static spinlock_t gm_lock
;
371 * This is used to figure out the divisor speeds and the timeouts
374 static struct mxser_hwconf mxsercfg
[MXSER_BOARDS
];
380 static void mxser_getcfg(int board
, struct mxser_hwconf
*hwconf
);
381 static int mxser_init(void);
383 /* static void mxser_poll(unsigned long); */
384 static int mxser_get_ISA_conf(int, struct mxser_hwconf
*);
385 static void mxser_do_softint(struct work_struct
*);
386 static int mxser_open(struct tty_struct
*, struct file
*);
387 static void mxser_close(struct tty_struct
*, struct file
*);
388 static int mxser_write(struct tty_struct
*, const unsigned char *, int);
389 static int mxser_write_room(struct tty_struct
*);
390 static void mxser_flush_buffer(struct tty_struct
*);
391 static int mxser_chars_in_buffer(struct tty_struct
*);
392 static void mxser_flush_chars(struct tty_struct
*);
393 static void mxser_put_char(struct tty_struct
*, unsigned char);
394 static int mxser_ioctl(struct tty_struct
*, struct file
*, uint
, ulong
);
395 static int mxser_ioctl_special(unsigned int, void __user
*);
396 static void mxser_throttle(struct tty_struct
*);
397 static void mxser_unthrottle(struct tty_struct
*);
398 static void mxser_set_termios(struct tty_struct
*, struct ktermios
*);
399 static void mxser_stop(struct tty_struct
*);
400 static void mxser_start(struct tty_struct
*);
401 static void mxser_hangup(struct tty_struct
*);
402 static void mxser_rs_break(struct tty_struct
*, int);
403 static irqreturn_t
mxser_interrupt(int, void *);
404 static void mxser_receive_chars(struct mxser_struct
*, int *);
405 static void mxser_transmit_chars(struct mxser_struct
*);
406 static void mxser_check_modem_status(struct mxser_struct
*, int);
407 static int mxser_block_til_ready(struct tty_struct
*, struct file
*, struct mxser_struct
*);
408 static int mxser_startup(struct mxser_struct
*);
409 static void mxser_shutdown(struct mxser_struct
*);
410 static int mxser_change_speed(struct mxser_struct
*, struct ktermios
*old_termios
);
411 static int mxser_get_serial_info(struct mxser_struct
*, struct serial_struct __user
*);
412 static int mxser_set_serial_info(struct mxser_struct
*, struct serial_struct __user
*);
413 static int mxser_get_lsr_info(struct mxser_struct
*, unsigned int __user
*);
414 static void mxser_send_break(struct mxser_struct
*, int);
415 static int mxser_tiocmget(struct tty_struct
*, struct file
*);
416 static int mxser_tiocmset(struct tty_struct
*, struct file
*, unsigned int, unsigned int);
417 static int mxser_set_baud(struct mxser_struct
*info
, long newspd
);
418 static void mxser_wait_until_sent(struct tty_struct
*tty
, int timeout
);
420 static void mxser_startrx(struct tty_struct
*tty
);
421 static void mxser_stoprx(struct tty_struct
*tty
);
424 static int CheckIsMoxaMust(int io
)
429 outb(0, io
+ UART_LCR
);
430 DISABLE_MOXA_MUST_ENCHANCE_MODE(io
);
431 oldmcr
= inb(io
+ UART_MCR
);
432 outb(0, io
+ UART_MCR
);
433 SET_MOXA_MUST_XON1_VALUE(io
, 0x11);
434 if ((hwid
= inb(io
+ UART_MCR
)) != 0) {
435 outb(oldmcr
, io
+ UART_MCR
);
436 return MOXA_OTHER_UART
;
439 GET_MOXA_MUST_HARDWARE_ID(io
, &hwid
);
440 for (i
= 0; i
< UART_TYPE_NUM
; i
++) {
441 if (hwid
== Gmoxa_uart_id
[i
])
444 return MOXA_OTHER_UART
;
448 /* above is modified by Victor Yu. 08-15-2002 */
450 static const struct tty_operations mxser_ops
= {
452 .close
= mxser_close
,
453 .write
= mxser_write
,
454 .put_char
= mxser_put_char
,
455 .flush_chars
= mxser_flush_chars
,
456 .write_room
= mxser_write_room
,
457 .chars_in_buffer
= mxser_chars_in_buffer
,
458 .flush_buffer
= mxser_flush_buffer
,
459 .ioctl
= mxser_ioctl
,
460 .throttle
= mxser_throttle
,
461 .unthrottle
= mxser_unthrottle
,
462 .set_termios
= mxser_set_termios
,
464 .start
= mxser_start
,
465 .hangup
= mxser_hangup
,
466 .break_ctl
= mxser_rs_break
,
467 .wait_until_sent
= mxser_wait_until_sent
,
468 .tiocmget
= mxser_tiocmget
,
469 .tiocmset
= mxser_tiocmset
,
473 * The MOXA Smartio/Industio serial driver boot-time initialization code!
476 static int __init
mxser_module_init(void)
481 printk(KERN_DEBUG
"Loading module mxser ...\n");
484 printk(KERN_DEBUG
"Done.\n");
488 static void __exit
mxser_module_exit(void)
493 printk(KERN_DEBUG
"Unloading module mxser ...\n");
495 err
= tty_unregister_driver(mxvar_sdriver
);
497 put_tty_driver(mxvar_sdriver
);
499 printk(KERN_ERR
"Couldn't unregister MOXA Smartio/Industio family serial driver\n");
501 for (i
= 0; i
< MXSER_BOARDS
; i
++) {
502 struct pci_dev
*pdev
;
504 if (mxsercfg
[i
].board_type
== -1)
507 pdev
= mxsercfg
[i
].pciInfo
.pdev
;
508 free_irq(mxsercfg
[i
].irq
, &mxvar_table
[i
* MXSER_PORTS_PER_BOARD
]);
509 if (pdev
!= NULL
) { /* PCI */
510 release_region(pci_resource_start(pdev
, 2), pci_resource_len(pdev
, 2));
511 release_region(pci_resource_start(pdev
, 3), pci_resource_len(pdev
, 3));
514 release_region(mxsercfg
[i
].ioaddr
[0], 8 * mxsercfg
[i
].ports
);
515 release_region(mxsercfg
[i
].vector
, 1);
520 printk(KERN_DEBUG
"Done.\n");
523 static void process_txrx_fifo(struct mxser_struct
*info
)
527 if ((info
->type
== PORT_16450
) || (info
->type
== PORT_8250
)) {
528 info
->rx_trigger
= 1;
529 info
->rx_high_water
= 1;
530 info
->rx_low_water
= 1;
531 info
->xmit_fifo_size
= 1;
533 for (i
= 0; i
< UART_INFO_NUM
; i
++) {
534 if (info
->IsMoxaMustChipFlag
== Gpci_uart_info
[i
].type
) {
535 info
->rx_trigger
= Gpci_uart_info
[i
].rx_trigger
;
536 info
->rx_low_water
= Gpci_uart_info
[i
].rx_low_water
;
537 info
->rx_high_water
= Gpci_uart_info
[i
].rx_high_water
;
538 info
->xmit_fifo_size
= Gpci_uart_info
[i
].xmit_fifo_size
;
545 static int mxser_initbrd(int board
, struct mxser_hwconf
*hwconf
)
547 struct mxser_struct
*info
;
551 n
= board
* MXSER_PORTS_PER_BOARD
;
552 info
= &mxvar_table
[n
];
554 printk(KERN_DEBUG
" ttyMI%d - ttyMI%d ",
555 n
, n
+ hwconf
->ports
- 1);
556 printk(" max. baud rate = %d bps.\n",
557 hwconf
->MaxCanSetBaudRate
[0]);
560 for (i
= 0; i
< hwconf
->ports
; i
++, n
++, info
++) {
562 info
->base
= hwconf
->ioaddr
[i
];
563 info
->irq
= hwconf
->irq
;
564 info
->vector
= hwconf
->vector
;
565 info
->vectormask
= hwconf
->vector_mask
;
566 info
->opmode_ioaddr
= hwconf
->opmode_ioaddr
[i
]; /* add by Victor Yu. 01-05-2004 */
568 info
->ldisc_stop_rx
= 0;
570 info
->IsMoxaMustChipFlag
= hwconf
->IsMoxaMustChipFlag
;
571 /* Enhance mode enabled here */
572 if (info
->IsMoxaMustChipFlag
!= MOXA_OTHER_UART
) {
573 ENABLE_MOXA_MUST_ENCHANCE_MODE(info
->base
);
576 info
->flags
= ASYNC_SHARE_IRQ
;
577 info
->type
= hwconf
->uart_type
;
578 info
->baud_base
= hwconf
->baud_base
[i
];
580 info
->MaxCanSetBaudRate
= hwconf
->MaxCanSetBaudRate
[i
];
582 process_txrx_fifo(info
);
585 info
->custom_divisor
= hwconf
->baud_base
[i
] * 16;
586 info
->close_delay
= 5 * HZ
/ 10;
587 info
->closing_wait
= 30 * HZ
;
588 INIT_WORK(&info
->tqueue
, mxser_do_softint
);
589 info
->normal_termios
= mxvar_sdriver
->init_termios
;
590 init_waitqueue_head(&info
->open_wait
);
591 init_waitqueue_head(&info
->close_wait
);
592 init_waitqueue_head(&info
->delta_msr_wait
);
593 memset(&info
->mon_data
, 0, sizeof(struct mxser_mon
));
594 info
->err_shadow
= 0;
595 spin_lock_init(&info
->slock
);
598 * Allocate the IRQ if necessary
602 /* before set INT ISR, disable all int */
603 for (i
= 0; i
< hwconf
->ports
; i
++) {
604 outb(inb(hwconf
->ioaddr
[i
] + UART_IER
) & 0xf0,
605 hwconf
->ioaddr
[i
] + UART_IER
);
608 n
= board
* MXSER_PORTS_PER_BOARD
;
609 info
= &mxvar_table
[n
];
611 retval
= request_irq(hwconf
->irq
, mxser_interrupt
, IRQ_T(info
),
614 printk(KERN_ERR
"Board %d: %s",
615 board
, mxser_brdname
[hwconf
->board_type
- 1]);
616 printk(" Request irq failed, IRQ (%d) may conflict with"
617 " another device.\n", info
->irq
);
623 static void mxser_getcfg(int board
, struct mxser_hwconf
*hwconf
)
625 mxsercfg
[board
] = *hwconf
;
629 static int mxser_get_PCI_conf(int busnum
, int devnum
, int board_type
, struct mxser_hwconf
*hwconf
)
632 /* unsigned int val; */
633 unsigned int ioaddress
;
634 struct pci_dev
*pdev
= hwconf
->pciInfo
.pdev
;
637 hwconf
->board_type
= board_type
;
638 hwconf
->ports
= mxser_numports
[board_type
- 1];
639 ioaddress
= pci_resource_start(pdev
, 2);
640 request_region(pci_resource_start(pdev
, 2), pci_resource_len(pdev
, 2),
643 for (i
= 0; i
< hwconf
->ports
; i
++)
644 hwconf
->ioaddr
[i
] = ioaddress
+ 8 * i
;
647 ioaddress
= pci_resource_start(pdev
, 3);
648 request_region(pci_resource_start(pdev
, 3), pci_resource_len(pdev
, 3),
650 hwconf
->vector
= ioaddress
;
653 hwconf
->irq
= hwconf
->pciInfo
.pdev
->irq
;
655 hwconf
->IsMoxaMustChipFlag
= CheckIsMoxaMust(hwconf
->ioaddr
[0]);
656 hwconf
->uart_type
= PORT_16550A
;
657 hwconf
->vector_mask
= 0;
660 for (i
= 0; i
< hwconf
->ports
; i
++) {
661 for (j
= 0; j
< UART_INFO_NUM
; j
++) {
662 if (Gpci_uart_info
[j
].type
== hwconf
->IsMoxaMustChipFlag
) {
663 hwconf
->MaxCanSetBaudRate
[i
] = Gpci_uart_info
[j
].max_baud
;
665 /* exception....CP-102 */
666 if (board_type
== MXSER_BOARD_CP102
)
667 hwconf
->MaxCanSetBaudRate
[i
] = 921600;
673 if (hwconf
->IsMoxaMustChipFlag
== MOXA_MUST_MU860_HWID
) {
674 for (i
= 0; i
< hwconf
->ports
; i
++) {
676 hwconf
->opmode_ioaddr
[i
] = ioaddress
+ 4;
678 hwconf
->opmode_ioaddr
[i
] = ioaddress
+ 0x0c;
680 outb(0, ioaddress
+ 4); /* default set to RS232 mode */
681 outb(0, ioaddress
+ 0x0c); /* default set to RS232 mode */
684 for (i
= 0; i
< hwconf
->ports
; i
++) {
685 hwconf
->vector_mask
|= (1 << i
);
686 hwconf
->baud_base
[i
] = 921600;
692 static int mxser_init(void)
694 int i
, m
, retval
, b
, n
;
695 struct pci_dev
*pdev
= NULL
;
697 unsigned char busnum
, devnum
;
698 struct mxser_hwconf hwconf
;
700 mxvar_sdriver
= alloc_tty_driver(MXSER_PORTS
+ 1);
703 spin_lock_init(&gm_lock
);
705 for (i
= 0; i
< MXSER_BOARDS
; i
++) {
706 mxsercfg
[i
].board_type
= -1;
709 printk(KERN_INFO
"MOXA Smartio/Industio family driver version %s\n",
712 /* Initialize the tty_driver structure */
713 memset(mxvar_sdriver
, 0, sizeof(struct tty_driver
));
714 mxvar_sdriver
->owner
= THIS_MODULE
;
715 mxvar_sdriver
->magic
= TTY_DRIVER_MAGIC
;
716 mxvar_sdriver
->name
= "ttyMI";
717 mxvar_sdriver
->major
= ttymajor
;
718 mxvar_sdriver
->minor_start
= 0;
719 mxvar_sdriver
->num
= MXSER_PORTS
+ 1;
720 mxvar_sdriver
->type
= TTY_DRIVER_TYPE_SERIAL
;
721 mxvar_sdriver
->subtype
= SERIAL_TYPE_NORMAL
;
722 mxvar_sdriver
->init_termios
= tty_std_termios
;
723 mxvar_sdriver
->init_termios
.c_cflag
= B9600
|CS8
|CREAD
|HUPCL
|CLOCAL
;
724 mxvar_sdriver
->init_termios
.c_ispeed
= 9600;
725 mxvar_sdriver
->init_termios
.c_ospeed
= 9600;
726 mxvar_sdriver
->flags
= TTY_DRIVER_REAL_RAW
;
727 tty_set_operations(mxvar_sdriver
, &mxser_ops
);
728 mxvar_sdriver
->ttys
= mxvar_tty
;
729 mxvar_sdriver
->termios
= mxvar_termios
;
730 mxvar_sdriver
->termios_locked
= mxvar_termios_locked
;
733 memset(mxvar_table
, 0, MXSER_PORTS
* sizeof(struct mxser_struct
));
734 memset(&mxvar_log
, 0, sizeof(struct mxser_log
));
736 memset(&mxser_msr
, 0, sizeof(unsigned char) * (MXSER_PORTS
+ 1));
737 memset(&mon_data_ext
, 0, sizeof(struct mxser_mon_ext
));
738 memset(&mxser_set_baud_method
, 0, sizeof(int) * (MXSER_PORTS
+ 1));
739 memset(&hwconf
, 0, sizeof(struct mxser_hwconf
));
742 /* Start finding ISA boards here */
743 for (b
= 0; b
< MXSER_BOARDS
&& m
< MXSER_BOARDS
; b
++) {
746 if (!(cap
= mxserBoardCAP
[b
]))
749 retval
= mxser_get_ISA_conf(cap
, &hwconf
);
752 printk(KERN_INFO
"Found MOXA %s board (CAP=0x%x)\n",
753 mxser_brdname
[hwconf
.board_type
- 1], ioaddr
[b
]);
756 if (retval
== MXSER_ERR_IRQ
)
757 printk(KERN_ERR
"Invalid interrupt number, "
758 "board not configured\n");
759 else if (retval
== MXSER_ERR_IRQ_CONFLIT
)
760 printk(KERN_ERR
"Invalid interrupt number, "
761 "board not configured\n");
762 else if (retval
== MXSER_ERR_VECTOR
)
763 printk(KERN_ERR
"Invalid interrupt vector, "
764 "board not configured\n");
765 else if (retval
== MXSER_ERR_IOADDR
)
766 printk(KERN_ERR
"Invalid I/O address, "
767 "board not configured\n");
772 hwconf
.pciInfo
.busNum
= 0;
773 hwconf
.pciInfo
.devNum
= 0;
774 hwconf
.pciInfo
.pdev
= NULL
;
776 mxser_getcfg(m
, &hwconf
);
778 * init mxsercfg first,
779 * or mxsercfg data is not correct on ISR.
781 /* mxser_initbrd will hook ISR. */
782 if (mxser_initbrd(m
, &hwconf
) < 0)
788 /* Start finding ISA boards from module arg */
789 for (b
= 0; b
< MXSER_BOARDS
&& m
< MXSER_BOARDS
; b
++) {
792 if (!(cap
= ioaddr
[b
]))
795 retval
= mxser_get_ISA_conf(cap
, &hwconf
);
798 printk(KERN_INFO
"Found MOXA %s board (CAP=0x%x)\n",
799 mxser_brdname
[hwconf
.board_type
- 1], ioaddr
[b
]);
802 if (retval
== MXSER_ERR_IRQ
)
803 printk(KERN_ERR
"Invalid interrupt number, "
804 "board not configured\n");
805 else if (retval
== MXSER_ERR_IRQ_CONFLIT
)
806 printk(KERN_ERR
"Invalid interrupt number, "
807 "board not configured\n");
808 else if (retval
== MXSER_ERR_VECTOR
)
809 printk(KERN_ERR
"Invalid interrupt vector, "
810 "board not configured\n");
811 else if (retval
== MXSER_ERR_IOADDR
)
812 printk(KERN_ERR
"Invalid I/O address, "
813 "board not configured\n");
818 hwconf
.pciInfo
.busNum
= 0;
819 hwconf
.pciInfo
.devNum
= 0;
820 hwconf
.pciInfo
.pdev
= NULL
;
822 mxser_getcfg(m
, &hwconf
);
824 * init mxsercfg first,
825 * or mxsercfg data is not correct on ISR.
827 /* mxser_initbrd will hook ISR. */
828 if (mxser_initbrd(m
, &hwconf
) < 0)
834 /* start finding PCI board here */
836 n
= ARRAY_SIZE(mxser_pcibrds
) - 1;
840 pdev
= pci_get_device(mxser_pcibrds
[b
].vendor
,
841 mxser_pcibrds
[b
].device
, pdev
);
846 hwconf
.pciInfo
.busNum
= busnum
= pdev
->bus
->number
;
847 hwconf
.pciInfo
.devNum
= devnum
= PCI_SLOT(pdev
->devfn
) << 3;
848 hwconf
.pciInfo
.pdev
= pdev
;
849 printk(KERN_INFO
"Found MOXA %s board(BusNo=%d,DevNo=%d)\n",
850 mxser_brdname
[(int) (mxser_pcibrds
[b
].driver_data
) - 1],
851 busnum
, devnum
>> 3);
853 if (m
>= MXSER_BOARDS
)
855 "Too many Smartio/Industio family boards find "
856 "(maximum %d), board not configured\n",
859 if (pci_enable_device(pdev
)) {
860 printk(KERN_ERR
"Moxa SmartI/O PCI enable "
864 retval
= mxser_get_PCI_conf(busnum
, devnum
,
865 (int)mxser_pcibrds
[b
].driver_data
,
868 if (retval
== MXSER_ERR_IRQ
)
870 "Invalid interrupt number, "
871 "board not configured\n");
872 else if (retval
== MXSER_ERR_IRQ_CONFLIT
)
874 "Invalid interrupt number, "
875 "board not configured\n");
876 else if (retval
== MXSER_ERR_VECTOR
)
878 "Invalid interrupt vector, "
879 "board not configured\n");
880 else if (retval
== MXSER_ERR_IOADDR
)
882 "Invalid I/O address, "
883 "board not configured\n");
886 mxser_getcfg(m
, &hwconf
);
887 /* init mxsercfg first,
888 * or mxsercfg data is not correct on ISR.
890 /* mxser_initbrd will hook ISR. */
891 if (mxser_initbrd(m
, &hwconf
) < 0)
894 /* Keep an extra reference if we succeeded. It will
895 be returned at unload time */
901 retval
= tty_register_driver(mxvar_sdriver
);
903 printk(KERN_ERR
"Couldn't install MOXA Smartio/Industio family"
905 put_tty_driver(mxvar_sdriver
);
907 for (i
= 0; i
< MXSER_BOARDS
; i
++) {
908 if (mxsercfg
[i
].board_type
== -1)
911 free_irq(mxsercfg
[i
].irq
, &mxvar_table
[i
* MXSER_PORTS_PER_BOARD
]);
912 /* todo: release io, vector */
921 static void mxser_do_softint(struct work_struct
*work
)
923 struct mxser_struct
*info
=
924 container_of(work
, struct mxser_struct
, tqueue
);
925 struct tty_struct
*tty
;
930 if (test_and_clear_bit(MXSER_EVENT_TXLOW
, &info
->event
))
932 if (test_and_clear_bit(MXSER_EVENT_HANGUP
, &info
->event
))
937 static unsigned char mxser_get_msr(int baseaddr
, int mode
, int port
, struct mxser_struct
*info
)
939 unsigned char status
= 0;
941 status
= inb(baseaddr
+ UART_MSR
);
943 mxser_msr
[port
] &= 0x0F;
944 mxser_msr
[port
] |= status
;
945 status
= mxser_msr
[port
];
953 * This routine is called whenever a serial port is opened. It
954 * enables interrupts for a serial port, linking in its async structure into
955 * the IRQ chain. It also performs the serial-specific
956 * initialization for the tty structure.
958 static int mxser_open(struct tty_struct
*tty
, struct file
*filp
)
960 struct mxser_struct
*info
;
963 /* initialize driver_data in case something fails */
964 tty
->driver_data
= NULL
;
967 if (line
== MXSER_PORTS
)
969 if (line
< 0 || line
> MXSER_PORTS
)
971 info
= mxvar_table
+ line
;
975 tty
->driver_data
= info
;
978 * Start up serial port
980 retval
= mxser_startup(info
);
984 retval
= mxser_block_til_ready(tty
, filp
, info
);
990 if ((info
->count
== 1) && (info
->flags
& ASYNC_SPLIT_TERMIOS
)) {
991 if (tty
->driver
->subtype
== SERIAL_TYPE_NORMAL
)
992 *tty
->termios
= info
->normal_termios
;
994 *tty
->termios
= info
->callout_termios
;
995 mxser_change_speed(info
, NULL
);
999 status = mxser_get_msr(info->base, 0, info->port);
1000 mxser_check_modem_status(info, status);
1003 /* unmark here for very high baud rate (ex. 921600 bps) used */
1004 tty
->low_latency
= 1;
1009 * This routine is called when the serial port gets closed. First, we
1010 * wait for the last remaining data to be sent. Then, we unlink its
1011 * async structure from the interrupt chain if necessary, and we free
1012 * that IRQ if nothing is left in the chain.
1014 static void mxser_close(struct tty_struct
*tty
, struct file
*filp
)
1016 struct mxser_struct
*info
= tty
->driver_data
;
1018 unsigned long timeout
;
1019 unsigned long flags
;
1020 struct tty_ldisc
*ld
;
1022 if (tty
->index
== MXSER_PORTS
)
1027 spin_lock_irqsave(&info
->slock
, flags
);
1029 if (tty_hung_up_p(filp
)) {
1030 spin_unlock_irqrestore(&info
->slock
, flags
);
1033 if ((tty
->count
== 1) && (info
->count
!= 1)) {
1035 * Uh, oh. tty->count is 1, which means that the tty
1036 * structure will be freed. Info->count should always
1037 * be one in these conditions. If it's greater than
1038 * one, we've got real problems, since it means the
1039 * serial port won't be shutdown.
1041 printk(KERN_ERR
"mxser_close: bad serial port count; "
1042 "tty->count is 1, info->count is %d\n", info
->count
);
1045 if (--info
->count
< 0) {
1046 printk(KERN_ERR
"mxser_close: bad serial port count for "
1047 "ttys%d: %d\n", info
->port
, info
->count
);
1051 spin_unlock_irqrestore(&info
->slock
, flags
);
1054 info
->flags
|= ASYNC_CLOSING
;
1055 spin_unlock_irqrestore(&info
->slock
, flags
);
1057 * Save the termios structure, since this port may have
1058 * separate termios for callout and dialin.
1060 if (info
->flags
& ASYNC_NORMAL_ACTIVE
)
1061 info
->normal_termios
= *tty
->termios
;
1063 * Now we wait for the transmit buffer to clear; and we notify
1064 * the line discipline to only process XON/XOFF characters.
1067 if (info
->closing_wait
!= ASYNC_CLOSING_WAIT_NONE
)
1068 tty_wait_until_sent(tty
, info
->closing_wait
);
1070 * At this point we stop accepting input. To do this, we
1071 * disable the receive line status interrupts, and tell the
1072 * interrupt driver to stop checking the data ready bit in the
1073 * line status register.
1075 info
->IER
&= ~UART_IER_RLSI
;
1076 if (info
->IsMoxaMustChipFlag
)
1077 info
->IER
&= ~MOXA_MUST_RECV_ISR
;
1079 info->read_status_mask &= ~UART_LSR_DR;
1081 if (info
->flags
& ASYNC_INITIALIZED
) {
1082 outb(info
->IER
, info
->base
+ UART_IER
);
1084 * Before we drop DTR, make sure the UART transmitter
1085 * has completely drained; this is especially
1086 * important if there is a transmit FIFO!
1088 timeout
= jiffies
+ HZ
;
1089 while (!(inb(info
->base
+ UART_LSR
) & UART_LSR_TEMT
)) {
1090 schedule_timeout_interruptible(5);
1091 if (time_after(jiffies
, timeout
))
1095 mxser_shutdown(info
);
1097 if (tty
->driver
->flush_buffer
)
1098 tty
->driver
->flush_buffer(tty
);
1100 ld
= tty_ldisc_ref(tty
);
1102 if (ld
->flush_buffer
)
1103 ld
->flush_buffer(tty
);
1104 tty_ldisc_deref(ld
);
1110 if (info
->blocked_open
) {
1111 if (info
->close_delay
)
1112 schedule_timeout_interruptible(info
->close_delay
);
1113 wake_up_interruptible(&info
->open_wait
);
1116 info
->flags
&= ~(ASYNC_NORMAL_ACTIVE
| ASYNC_CLOSING
);
1117 wake_up_interruptible(&info
->close_wait
);
1121 static int mxser_write(struct tty_struct
*tty
, const unsigned char *buf
, int count
)
1124 struct mxser_struct
*info
= tty
->driver_data
;
1125 unsigned long flags
;
1127 if (!info
->xmit_buf
)
1131 c
= min_t(int, count
, min(SERIAL_XMIT_SIZE
- info
->xmit_cnt
- 1,
1132 SERIAL_XMIT_SIZE
- info
->xmit_head
));
1136 memcpy(info
->xmit_buf
+ info
->xmit_head
, buf
, c
);
1137 spin_lock_irqsave(&info
->slock
, flags
);
1138 info
->xmit_head
= (info
->xmit_head
+ c
) &
1139 (SERIAL_XMIT_SIZE
- 1);
1140 info
->xmit_cnt
+= c
;
1141 spin_unlock_irqrestore(&info
->slock
, flags
);
1148 if (info
->xmit_cnt
&& !tty
->stopped
&& !(info
->IER
& UART_IER_THRI
)) {
1149 if (!tty
->hw_stopped
||
1150 (info
->type
== PORT_16550A
) ||
1151 (info
->IsMoxaMustChipFlag
)) {
1152 spin_lock_irqsave(&info
->slock
, flags
);
1153 info
->IER
|= UART_IER_THRI
;
1154 outb(info
->IER
, info
->base
+ UART_IER
);
1155 spin_unlock_irqrestore(&info
->slock
, flags
);
1161 static void mxser_put_char(struct tty_struct
*tty
, unsigned char ch
)
1163 struct mxser_struct
*info
= tty
->driver_data
;
1164 unsigned long flags
;
1166 if (!info
->xmit_buf
)
1169 if (info
->xmit_cnt
>= SERIAL_XMIT_SIZE
- 1)
1172 spin_lock_irqsave(&info
->slock
, flags
);
1173 info
->xmit_buf
[info
->xmit_head
++] = ch
;
1174 info
->xmit_head
&= SERIAL_XMIT_SIZE
- 1;
1176 spin_unlock_irqrestore(&info
->slock
, flags
);
1177 if (!tty
->stopped
&& !(info
->IER
& UART_IER_THRI
)) {
1178 if (!tty
->hw_stopped
||
1179 (info
->type
== PORT_16550A
) ||
1180 info
->IsMoxaMustChipFlag
) {
1181 spin_lock_irqsave(&info
->slock
, flags
);
1182 info
->IER
|= UART_IER_THRI
;
1183 outb(info
->IER
, info
->base
+ UART_IER
);
1184 spin_unlock_irqrestore(&info
->slock
, flags
);
1190 static void mxser_flush_chars(struct tty_struct
*tty
)
1192 struct mxser_struct
*info
= tty
->driver_data
;
1193 unsigned long flags
;
1195 if (info
->xmit_cnt
<= 0 ||
1199 (info
->type
!= PORT_16550A
) &&
1200 (!info
->IsMoxaMustChipFlag
)
1204 spin_lock_irqsave(&info
->slock
, flags
);
1206 info
->IER
|= UART_IER_THRI
;
1207 outb(info
->IER
, info
->base
+ UART_IER
);
1209 spin_unlock_irqrestore(&info
->slock
, flags
);
1212 static int mxser_write_room(struct tty_struct
*tty
)
1214 struct mxser_struct
*info
= tty
->driver_data
;
1217 ret
= SERIAL_XMIT_SIZE
- info
->xmit_cnt
- 1;
1223 static int mxser_chars_in_buffer(struct tty_struct
*tty
)
1225 struct mxser_struct
*info
= tty
->driver_data
;
1226 return info
->xmit_cnt
;
1229 static void mxser_flush_buffer(struct tty_struct
*tty
)
1231 struct mxser_struct
*info
= tty
->driver_data
;
1233 unsigned long flags
;
1236 spin_lock_irqsave(&info
->slock
, flags
);
1237 info
->xmit_cnt
= info
->xmit_head
= info
->xmit_tail
= 0;
1239 /* below added by shinhay */
1240 fcr
= inb(info
->base
+ UART_FCR
);
1241 outb((fcr
| UART_FCR_CLEAR_RCVR
| UART_FCR_CLEAR_XMIT
),
1242 info
->base
+ UART_FCR
);
1243 outb(fcr
, info
->base
+ UART_FCR
);
1245 spin_unlock_irqrestore(&info
->slock
, flags
);
1246 /* above added by shinhay */
1251 static int mxser_ioctl(struct tty_struct
*tty
, struct file
*file
, unsigned int cmd
, unsigned long arg
)
1253 struct mxser_struct
*info
= tty
->driver_data
;
1255 struct async_icount cprev
, cnow
; /* kernel counter temps */
1256 struct serial_icounter_struct __user
*p_cuser
;
1257 unsigned long templ
;
1258 unsigned long flags
;
1259 void __user
*argp
= (void __user
*)arg
;
1261 if (tty
->index
== MXSER_PORTS
)
1262 return mxser_ioctl_special(cmd
, argp
);
1264 /* following add by Victor Yu. 01-05-2004 */
1265 if (cmd
== MOXA_SET_OP_MODE
|| cmd
== MOXA_GET_OP_MODE
) {
1267 static unsigned char ModeMask
[] = { 0xfc, 0xf3, 0xcf, 0x3f };
1269 unsigned char val
, mask
;
1272 if (cmd
== MOXA_SET_OP_MODE
) {
1273 if (get_user(opmode
, (int __user
*) argp
))
1275 if (opmode
!= RS232_MODE
&&
1276 opmode
!= RS485_2WIRE_MODE
&&
1277 opmode
!= RS422_MODE
&&
1278 opmode
!= RS485_4WIRE_MODE
)
1282 val
= inb(info
->opmode_ioaddr
);
1284 val
|= (opmode
<< shiftbit
);
1285 outb(val
, info
->opmode_ioaddr
);
1288 opmode
= inb(info
->opmode_ioaddr
) >> shiftbit
;
1289 opmode
&= OP_MODE_MASK
;
1290 if (copy_to_user(argp
, &opmode
, sizeof(int)))
1295 /* above add by Victor Yu. 01-05-2004 */
1297 if ((cmd
!= TIOCGSERIAL
) && (cmd
!= TIOCMIWAIT
) && (cmd
!= TIOCGICOUNT
)) {
1298 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1302 case TCSBRK
: /* SVID version: non-zero arg --> no break */
1303 retval
= tty_check_change(tty
);
1306 tty_wait_until_sent(tty
, 0);
1308 mxser_send_break(info
, HZ
/ 4); /* 1/4 second */
1310 case TCSBRKP
: /* support for POSIX tcsendbreak() */
1311 retval
= tty_check_change(tty
);
1314 tty_wait_until_sent(tty
, 0);
1315 mxser_send_break(info
, arg
? arg
* (HZ
/ 10) : HZ
/ 4);
1318 return put_user(C_CLOCAL(tty
) ? 1 : 0, (unsigned long __user
*)argp
);
1320 if (get_user(templ
, (unsigned long __user
*) argp
))
1323 tty
->termios
->c_cflag
= ((tty
->termios
->c_cflag
& ~CLOCAL
) | (arg
? CLOCAL
: 0));
1326 return mxser_get_serial_info(info
, argp
);
1328 return mxser_set_serial_info(info
, argp
);
1329 case TIOCSERGETLSR
: /* Get line status register */
1330 return mxser_get_lsr_info(info
, argp
);
1332 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
1333 * - mask passed in arg for lines of interest
1334 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
1335 * Caller should use TIOCGICOUNT to see which one it was
1338 spin_lock_irqsave(&info
->slock
, flags
);
1339 cnow
= info
->icount
; /* note the counters on entry */
1340 spin_unlock_irqrestore(&info
->slock
, flags
);
1342 wait_event_interruptible(info
->delta_msr_wait
, ({
1344 spin_lock_irqsave(&info
->slock
, flags
);
1345 cnow
= info
->icount
; /* atomic copy */
1346 spin_unlock_irqrestore(&info
->slock
, flags
);
1348 ((arg
& TIOCM_RNG
) && (cnow
.rng
!= cprev
.rng
)) ||
1349 ((arg
& TIOCM_DSR
) && (cnow
.dsr
!= cprev
.dsr
)) ||
1350 ((arg
& TIOCM_CD
) && (cnow
.dcd
!= cprev
.dcd
)) ||
1351 ((arg
& TIOCM_CTS
) && (cnow
.cts
!= cprev
.cts
));
1355 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
1356 * Return: write counters to the user passed counter struct
1357 * NB: both 1->0 and 0->1 transitions are counted except for
1358 * RI where only 0->1 is counted.
1361 spin_lock_irqsave(&info
->slock
, flags
);
1362 cnow
= info
->icount
;
1363 spin_unlock_irqrestore(&info
->slock
, flags
);
1365 /* modified by casper 1/11/2000 */
1366 if (put_user(cnow
.frame
, &p_cuser
->frame
))
1368 if (put_user(cnow
.brk
, &p_cuser
->brk
))
1370 if (put_user(cnow
.overrun
, &p_cuser
->overrun
))
1372 if (put_user(cnow
.buf_overrun
, &p_cuser
->buf_overrun
))
1374 if (put_user(cnow
.parity
, &p_cuser
->parity
))
1376 if (put_user(cnow
.rx
, &p_cuser
->rx
))
1378 if (put_user(cnow
.tx
, &p_cuser
->tx
))
1380 put_user(cnow
.cts
, &p_cuser
->cts
);
1381 put_user(cnow
.dsr
, &p_cuser
->dsr
);
1382 put_user(cnow
.rng
, &p_cuser
->rng
);
1383 put_user(cnow
.dcd
, &p_cuser
->dcd
);
1385 case MOXA_HighSpeedOn
:
1386 return put_user(info
->baud_base
!= 115200 ? 1 : 0, (int __user
*)argp
);
1387 case MOXA_SDS_RSTICOUNTER
: {
1388 info
->mon_data
.rxcnt
= 0;
1389 info
->mon_data
.txcnt
= 0;
1392 /* (above) added by James. */
1393 case MOXA_ASPP_SETBAUD
:{
1395 if (get_user(baud
, (long __user
*)argp
))
1397 mxser_set_baud(info
, baud
);
1400 case MOXA_ASPP_GETBAUD
:
1401 if (copy_to_user(argp
, &info
->realbaud
, sizeof(long)))
1406 case MOXA_ASPP_OQUEUE
:{
1409 len
= mxser_chars_in_buffer(tty
);
1411 lsr
= inb(info
->base
+ UART_LSR
) & UART_LSR_TEMT
;
1413 len
+= (lsr
? 0 : 1);
1415 if (copy_to_user(argp
, &len
, sizeof(int)))
1420 case MOXA_ASPP_MON
: {
1423 /* info->mon_data.ser_param = tty->termios->c_cflag; */
1425 status
= mxser_get_msr(info
->base
, 1, info
->port
, info
);
1426 mxser_check_modem_status(info
, status
);
1428 mcr
= inb(info
->base
+ UART_MCR
);
1429 if (mcr
& MOXA_MUST_MCR_XON_FLAG
)
1430 info
->mon_data
.hold_reason
&= ~NPPI_NOTIFY_XOFFHOLD
;
1432 info
->mon_data
.hold_reason
|= NPPI_NOTIFY_XOFFHOLD
;
1434 if (mcr
& MOXA_MUST_MCR_TX_XON
)
1435 info
->mon_data
.hold_reason
&= ~NPPI_NOTIFY_XOFFXENT
;
1437 info
->mon_data
.hold_reason
|= NPPI_NOTIFY_XOFFXENT
;
1439 if (info
->tty
->hw_stopped
)
1440 info
->mon_data
.hold_reason
|= NPPI_NOTIFY_CTSHOLD
;
1442 info
->mon_data
.hold_reason
&= ~NPPI_NOTIFY_CTSHOLD
;
1444 if (copy_to_user(argp
, &info
->mon_data
,
1445 sizeof(struct mxser_mon
)))
1451 case MOXA_ASPP_LSTATUS
: {
1452 if (copy_to_user(argp
, &info
->err_shadow
,
1453 sizeof(unsigned char)))
1456 info
->err_shadow
= 0;
1459 case MOXA_SET_BAUD_METHOD
: {
1462 if (get_user(method
, (int __user
*)argp
))
1464 mxser_set_baud_method
[info
->port
] = method
;
1465 if (copy_to_user(argp
, &method
, sizeof(int)))
1471 return -ENOIOCTLCMD
;
1477 #define CMSPAR 010000000000
1480 static int mxser_ioctl_special(unsigned int cmd
, void __user
*argp
)
1482 int i
, result
, status
;
1486 if (copy_to_user(argp
, mxsercfg
,
1487 sizeof(struct mxser_hwconf
) * 4))
1490 case MOXA_GET_MAJOR
:
1491 if (copy_to_user(argp
, &ttymajor
, sizeof(int)))
1495 case MOXA_GET_CUMAJOR
:
1496 if (copy_to_user(argp
, &calloutmajor
, sizeof(int)))
1500 case MOXA_CHKPORTENABLE
:
1502 for (i
= 0; i
< MXSER_PORTS
; i
++) {
1503 if (mxvar_table
[i
].base
)
1506 return put_user(result
, (unsigned long __user
*)argp
);
1507 case MOXA_GETDATACOUNT
:
1508 if (copy_to_user(argp
, &mxvar_log
, sizeof(mxvar_log
)))
1511 case MOXA_GETMSTATUS
:
1512 for (i
= 0; i
< MXSER_PORTS
; i
++) {
1514 if (!mxvar_table
[i
].base
) {
1515 GMStatus
[i
].dcd
= 0;
1516 GMStatus
[i
].dsr
= 0;
1517 GMStatus
[i
].cts
= 0;
1521 if (!mxvar_table
[i
].tty
|| !mxvar_table
[i
].tty
->termios
)
1522 GMStatus
[i
].cflag
= mxvar_table
[i
].normal_termios
.c_cflag
;
1524 GMStatus
[i
].cflag
= mxvar_table
[i
].tty
->termios
->c_cflag
;
1526 status
= inb(mxvar_table
[i
].base
+ UART_MSR
);
1527 if (status
& 0x80 /*UART_MSR_DCD */ )
1528 GMStatus
[i
].dcd
= 1;
1530 GMStatus
[i
].dcd
= 0;
1532 if (status
& 0x20 /*UART_MSR_DSR */ )
1533 GMStatus
[i
].dsr
= 1;
1535 GMStatus
[i
].dsr
= 0;
1538 if (status
& 0x10 /*UART_MSR_CTS */ )
1539 GMStatus
[i
].cts
= 1;
1541 GMStatus
[i
].cts
= 0;
1543 if (copy_to_user(argp
, GMStatus
,
1544 sizeof(struct mxser_mstatus
) * MXSER_PORTS
))
1547 case MOXA_ASPP_MON_EXT
: {
1551 unsigned cflag
, iflag
;
1553 for (i
= 0; i
< MXSER_PORTS
; i
++) {
1554 if (!mxvar_table
[i
].base
)
1557 status
= mxser_get_msr(mxvar_table
[i
].base
, 0,
1558 i
, &(mxvar_table
[i
]));
1560 mxser_check_modem_status(&mxvar_table[i],
1563 if (status
& UART_MSR_TERI
)
1564 mxvar_table
[i
].icount
.rng
++;
1565 if (status
& UART_MSR_DDSR
)
1566 mxvar_table
[i
].icount
.dsr
++;
1567 if (status
& UART_MSR_DDCD
)
1568 mxvar_table
[i
].icount
.dcd
++;
1569 if (status
& UART_MSR_DCTS
)
1570 mxvar_table
[i
].icount
.cts
++;
1572 mxvar_table
[i
].mon_data
.modem_status
= status
;
1573 mon_data_ext
.rx_cnt
[i
] = mxvar_table
[i
].mon_data
.rxcnt
;
1574 mon_data_ext
.tx_cnt
[i
] = mxvar_table
[i
].mon_data
.txcnt
;
1575 mon_data_ext
.up_rxcnt
[i
] = mxvar_table
[i
].mon_data
.up_rxcnt
;
1576 mon_data_ext
.up_txcnt
[i
] = mxvar_table
[i
].mon_data
.up_txcnt
;
1577 mon_data_ext
.modem_status
[i
] = mxvar_table
[i
].mon_data
.modem_status
;
1578 mon_data_ext
.baudrate
[i
] = mxvar_table
[i
].realbaud
;
1580 if (!mxvar_table
[i
].tty
|| !mxvar_table
[i
].tty
->termios
) {
1581 cflag
= mxvar_table
[i
].normal_termios
.c_cflag
;
1582 iflag
= mxvar_table
[i
].normal_termios
.c_iflag
;
1584 cflag
= mxvar_table
[i
].tty
->termios
->c_cflag
;
1585 iflag
= mxvar_table
[i
].tty
->termios
->c_iflag
;
1588 mon_data_ext
.databits
[i
] = cflag
& CSIZE
;
1590 mon_data_ext
.stopbits
[i
] = cflag
& CSTOPB
;
1592 mon_data_ext
.parity
[i
] = cflag
& (PARENB
| PARODD
| CMSPAR
);
1594 mon_data_ext
.flowctrl
[i
] = 0x00;
1596 if (cflag
& CRTSCTS
)
1597 mon_data_ext
.flowctrl
[i
] |= 0x03;
1599 if (iflag
& (IXON
| IXOFF
))
1600 mon_data_ext
.flowctrl
[i
] |= 0x0C;
1602 if (mxvar_table
[i
].type
== PORT_16550A
)
1603 mon_data_ext
.fifo
[i
] = 1;
1605 mon_data_ext
.fifo
[i
] = 0;
1609 opmode
= inb(mxvar_table
[i
].opmode_ioaddr
) >> shiftbit
;
1610 opmode
&= OP_MODE_MASK
;
1612 mon_data_ext
.iftype
[i
] = opmode
;
1615 if (copy_to_user(argp
, &mon_data_ext
, sizeof(struct mxser_mon_ext
)))
1622 return -ENOIOCTLCMD
;
1627 static void mxser_stoprx(struct tty_struct
*tty
)
1629 struct mxser_struct
*info
= tty
->driver_data
;
1630 /* unsigned long flags; */
1632 info
->ldisc_stop_rx
= 1;
1634 /* MX_LOCK(&info->slock); */
1635 /* following add by Victor Yu. 09-02-2002 */
1636 if (info
->IsMoxaMustChipFlag
) {
1637 info
->IER
&= ~MOXA_MUST_RECV_ISR
;
1638 outb(info
->IER
, info
->base
+ UART_IER
);
1640 /* above add by Victor Yu. 09-02-2002 */
1641 info
->x_char
= STOP_CHAR(tty
);
1642 /* mask by Victor Yu. 09-02-2002 */
1643 /* outb(info->IER, 0); */
1644 outb(0, info
->base
+ UART_IER
);
1645 info
->IER
|= UART_IER_THRI
;
1646 /* force Tx interrupt */
1647 outb(info
->IER
, info
->base
+ UART_IER
);
1648 } /* add by Victor Yu. 09-02-2002 */
1649 /* MX_UNLOCK(&info->slock); */
1652 if (info
->tty
->termios
->c_cflag
& CRTSCTS
) {
1653 /* MX_LOCK(&info->slock); */
1654 info
->MCR
&= ~UART_MCR_RTS
;
1655 outb(info
->MCR
, info
->base
+ UART_MCR
);
1656 /* MX_UNLOCK(&info->slock); */
1660 static void mxser_startrx(struct tty_struct
*tty
)
1662 struct mxser_struct
*info
= tty
->driver_data
;
1663 /* unsigned long flags; */
1665 info
->ldisc_stop_rx
= 0;
1670 /* MX_LOCK(&info->slock); */
1672 /* following add by Victor Yu. 09-02-2002 */
1673 if (info
->IsMoxaMustChipFlag
) {
1674 info
->IER
|= MOXA_MUST_RECV_ISR
;
1675 outb(info
->IER
, info
->base
+ UART_IER
);
1677 /* above add by Victor Yu. 09-02-2002 */
1679 info
->x_char
= START_CHAR(tty
);
1680 /* mask by Victor Yu. 09-02-2002 */
1681 /* outb(info->IER, 0); */
1682 /* add by Victor Yu. 09-02-2002 */
1683 outb(0, info
->base
+ UART_IER
);
1684 /* force Tx interrupt */
1685 info
->IER
|= UART_IER_THRI
;
1686 outb(info
->IER
, info
->base
+ UART_IER
);
1687 } /* add by Victor Yu. 09-02-2002 */
1688 /* MX_UNLOCK(&info->slock); */
1692 if (info
->tty
->termios
->c_cflag
& CRTSCTS
) {
1693 /* MX_LOCK(&info->slock); */
1694 info
->MCR
|= UART_MCR_RTS
;
1695 outb(info
->MCR
, info
->base
+ UART_MCR
);
1696 /* MX_UNLOCK(&info->slock); */
1701 * This routine is called by the upper-layer tty layer to signal that
1702 * incoming characters should be throttled.
1704 static void mxser_throttle(struct tty_struct
*tty
)
1706 /* struct mxser_struct *info = tty->driver_data; */
1707 /* unsigned long flags; */
1709 /* MX_LOCK(&info->slock); */
1711 /* MX_UNLOCK(&info->slock); */
1714 static void mxser_unthrottle(struct tty_struct
*tty
)
1716 /* struct mxser_struct *info = tty->driver_data; */
1717 /* unsigned long flags; */
1719 /* MX_LOCK(&info->slock); */
1721 /* MX_UNLOCK(&info->slock); */
1724 static void mxser_set_termios(struct tty_struct
*tty
, struct ktermios
*old_termios
)
1726 struct mxser_struct
*info
= tty
->driver_data
;
1727 unsigned long flags
;
1729 mxser_change_speed(info
, old_termios
);
1731 if ((old_termios
->c_cflag
& CRTSCTS
) &&
1732 !(tty
->termios
->c_cflag
& CRTSCTS
)) {
1733 tty
->hw_stopped
= 0;
1737 /* Handle sw stopped */
1738 if ((old_termios
->c_iflag
& IXON
) &&
1739 !(tty
->termios
->c_iflag
& IXON
)) {
1742 /* following add by Victor Yu. 09-02-2002 */
1743 if (info
->IsMoxaMustChipFlag
) {
1744 spin_lock_irqsave(&info
->slock
, flags
);
1745 DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info
->base
);
1746 spin_unlock_irqrestore(&info
->slock
, flags
);
1748 /* above add by Victor Yu. 09-02-2002 */
1755 * mxser_stop() and mxser_start()
1757 * This routines are called before setting or resetting tty->stopped.
1758 * They enable or disable transmitter interrupts, as necessary.
1760 static void mxser_stop(struct tty_struct
*tty
)
1762 struct mxser_struct
*info
= tty
->driver_data
;
1763 unsigned long flags
;
1765 spin_lock_irqsave(&info
->slock
, flags
);
1766 if (info
->IER
& UART_IER_THRI
) {
1767 info
->IER
&= ~UART_IER_THRI
;
1768 outb(info
->IER
, info
->base
+ UART_IER
);
1770 spin_unlock_irqrestore(&info
->slock
, flags
);
1773 static void mxser_start(struct tty_struct
*tty
)
1775 struct mxser_struct
*info
= tty
->driver_data
;
1776 unsigned long flags
;
1778 spin_lock_irqsave(&info
->slock
, flags
);
1779 if (info
->xmit_cnt
&& info
->xmit_buf
&& !(info
->IER
& UART_IER_THRI
)) {
1780 info
->IER
|= UART_IER_THRI
;
1781 outb(info
->IER
, info
->base
+ UART_IER
);
1783 spin_unlock_irqrestore(&info
->slock
, flags
);
1787 * mxser_wait_until_sent() --- wait until the transmitter is empty
1789 static void mxser_wait_until_sent(struct tty_struct
*tty
, int timeout
)
1791 struct mxser_struct
*info
= tty
->driver_data
;
1792 unsigned long orig_jiffies
, char_time
;
1795 if (info
->type
== PORT_UNKNOWN
)
1798 if (info
->xmit_fifo_size
== 0)
1799 return; /* Just in case.... */
1801 orig_jiffies
= jiffies
;
1803 * Set the check interval to be 1/5 of the estimated time to
1804 * send a single character, and make it at least 1. The check
1805 * interval should also be less than the timeout.
1807 * Note: we have to use pretty tight timings here to satisfy
1810 char_time
= (info
->timeout
- HZ
/ 50) / info
->xmit_fifo_size
;
1811 char_time
= char_time
/ 5;
1814 if (timeout
&& timeout
< char_time
)
1815 char_time
= timeout
;
1817 * If the transmitter hasn't cleared in twice the approximate
1818 * amount of time to send the entire FIFO, it probably won't
1819 * ever clear. This assumes the UART isn't doing flow
1820 * control, which is currently the case. Hence, if it ever
1821 * takes longer than info->timeout, this is probably due to a
1822 * UART bug of some kind. So, we clamp the timeout parameter at
1825 if (!timeout
|| timeout
> 2 * info
->timeout
)
1826 timeout
= 2 * info
->timeout
;
1827 #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
1828 printk(KERN_DEBUG
"In rs_wait_until_sent(%d) check=%lu...",
1829 timeout
, char_time
);
1830 printk("jiff=%lu...", jiffies
);
1832 while (!((lsr
= inb(info
->base
+ UART_LSR
)) & UART_LSR_TEMT
)) {
1833 #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
1834 printk("lsr = %d (jiff=%lu)...", lsr
, jiffies
);
1836 schedule_timeout_interruptible(char_time
);
1837 if (signal_pending(current
))
1839 if (timeout
&& time_after(jiffies
, orig_jiffies
+ timeout
))
1842 set_current_state(TASK_RUNNING
);
1844 #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
1845 printk("lsr = %d (jiff=%lu)...done\n", lsr
, jiffies
);
1851 * This routine is called by tty_hangup() when a hangup is signaled.
1853 void mxser_hangup(struct tty_struct
*tty
)
1855 struct mxser_struct
*info
= tty
->driver_data
;
1857 mxser_flush_buffer(tty
);
1858 mxser_shutdown(info
);
1861 info
->flags
&= ~ASYNC_NORMAL_ACTIVE
;
1863 wake_up_interruptible(&info
->open_wait
);
1867 /* added by James 03-12-2004. */
1869 * mxser_rs_break() --- routine which turns the break handling on or off
1871 static void mxser_rs_break(struct tty_struct
*tty
, int break_state
)
1873 struct mxser_struct
*info
= tty
->driver_data
;
1874 unsigned long flags
;
1876 spin_lock_irqsave(&info
->slock
, flags
);
1877 if (break_state
== -1)
1878 outb(inb(info
->base
+ UART_LCR
) | UART_LCR_SBC
,
1879 info
->base
+ UART_LCR
);
1881 outb(inb(info
->base
+ UART_LCR
) & ~UART_LCR_SBC
,
1882 info
->base
+ UART_LCR
);
1883 spin_unlock_irqrestore(&info
->slock
, flags
);
1886 /* (above) added by James. */
1890 * This is the serial driver's generic interrupt routine
1892 static irqreturn_t
mxser_interrupt(int irq
, void *dev_id
)
1895 struct mxser_struct
*info
;
1896 struct mxser_struct
*port
;
1897 int max
, irqbits
, bits
, msr
;
1898 int pass_counter
= 0;
1899 int handled
= IRQ_NONE
;
1902 /* spin_lock(&gm_lock); */
1904 for (i
= 0; i
< MXSER_BOARDS
; i
++) {
1905 if (dev_id
== &(mxvar_table
[i
* MXSER_PORTS_PER_BOARD
])) {
1911 if (i
== MXSER_BOARDS
)
1915 max
= mxser_numports
[mxsercfg
[i
].board_type
- 1];
1917 irqbits
= inb(port
->vector
) & port
->vectormask
;
1918 if (irqbits
== port
->vectormask
)
1921 handled
= IRQ_HANDLED
;
1922 for (i
= 0, bits
= 1; i
< max
; i
++, irqbits
|= bits
, bits
<<= 1) {
1923 if (irqbits
== port
->vectormask
)
1929 /* following add by Victor Yu. 09-13-2002 */
1930 iir
= inb(info
->base
+ UART_IIR
);
1931 if (iir
& UART_IIR_NO_INT
)
1933 iir
&= MOXA_MUST_IIR_MASK
;
1935 status
= inb(info
->base
+ UART_LSR
);
1936 outb(0x27, info
->base
+ UART_FCR
);
1937 inb(info
->base
+ UART_MSR
);
1941 /* mask by Victor Yu. 09-13-2002
1943 (inb(info->base + UART_IIR) & UART_IIR_NO_INT) )
1946 /* mask by Victor Yu. 09-02-2002
1947 status = inb(info->base + UART_LSR) & info->read_status_mask;
1950 /* following add by Victor Yu. 09-02-2002 */
1951 status
= inb(info
->base
+ UART_LSR
);
1953 if (status
& UART_LSR_PE
)
1954 info
->err_shadow
|= NPPI_NOTIFY_PARITY
;
1955 if (status
& UART_LSR_FE
)
1956 info
->err_shadow
|= NPPI_NOTIFY_FRAMING
;
1957 if (status
& UART_LSR_OE
)
1958 info
->err_shadow
|= NPPI_NOTIFY_HW_OVERRUN
;
1959 if (status
& UART_LSR_BI
)
1960 info
->err_shadow
|= NPPI_NOTIFY_BREAK
;
1962 if (info
->IsMoxaMustChipFlag
) {
1964 if ( (status & 0x02) && !(status & 0x01) ) {
1965 outb(info->base+UART_FCR, 0x23);
1969 if (iir
== MOXA_MUST_IIR_GDA
||
1970 iir
== MOXA_MUST_IIR_RDA
||
1971 iir
== MOXA_MUST_IIR_RTO
||
1972 iir
== MOXA_MUST_IIR_LSR
)
1973 mxser_receive_chars(info
, &status
);
1976 /* above add by Victor Yu. 09-02-2002 */
1978 status
&= info
->read_status_mask
;
1979 if (status
& UART_LSR_DR
)
1980 mxser_receive_chars(info
, &status
);
1982 msr
= inb(info
->base
+ UART_MSR
);
1983 if (msr
& UART_MSR_ANY_DELTA
) {
1984 mxser_check_modem_status(info
, msr
);
1986 /* following add by Victor Yu. 09-13-2002 */
1987 if (info
->IsMoxaMustChipFlag
) {
1988 if ((iir
== 0x02) && (status
& UART_LSR_THRE
)) {
1989 mxser_transmit_chars(info
);
1992 /* above add by Victor Yu. 09-13-2002 */
1994 if (status
& UART_LSR_THRE
) {
1995 /* 8-2-99 by William
1996 if ( info->x_char || (info->xmit_cnt > 0) )
1998 mxser_transmit_chars(info
);
2002 if (pass_counter
++ > MXSER_ISR_PASS_LIMIT
) {
2003 break; /* Prevent infinite loops */
2008 /* spin_unlock(&gm_lock); */
2012 static void mxser_receive_chars(struct mxser_struct
*info
, int *status
)
2014 struct tty_struct
*tty
= info
->tty
;
2015 unsigned char ch
, gdl
;
2020 unsigned long flags
;
2022 spin_lock_irqsave(&info
->slock
, flags
);
2024 recv_room
= tty
->receive_room
;
2025 if ((recv_room
== 0) && (!info
->ldisc_stop_rx
)) {
2026 /* mxser_throttle(tty); */
2031 /* following add by Victor Yu. 09-02-2002 */
2032 if (info
->IsMoxaMustChipFlag
!= MOXA_OTHER_UART
) {
2034 if (*status
& UART_LSR_SPECIAL
) {
2037 /* following add by Victor Yu. 02-11-2004 */
2038 if (info
->IsMoxaMustChipFlag
== MOXA_MUST_MU860_HWID
&&
2039 (*status
& MOXA_MUST_LSR_RERR
))
2041 /* above add by Victor Yu. 02-14-2004 */
2042 if (*status
& MOXA_MUST_LSR_RERR
)
2045 gdl
= inb(info
->base
+ MOXA_MUST_GDL_REGISTER
);
2047 /* add by Victor Yu. 02-11-2004 */
2048 if (info
->IsMoxaMustChipFlag
== MOXA_MUST_MU150_HWID
)
2049 gdl
&= MOXA_MUST_GDL_MASK
;
2050 if (gdl
>= recv_room
) {
2051 if (!info
->ldisc_stop_rx
) {
2052 /* mxser_throttle(tty); */
2058 ch
= inb(info
->base
+ UART_RX
);
2059 tty_insert_flip_char(tty
, ch
, 0);
2062 if ((cnt >= HI_WATER) && (info->stop_rx == 0)) {
2071 /* above add by Victor Yu. 09-02-2002 */
2077 if ((cnt >= HI_WATER) && (info->stop_rx == 0)) {
2084 ch
= inb(info
->base
+ UART_RX
);
2085 /* following add by Victor Yu. 09-02-2002 */
2086 if (info
->IsMoxaMustChipFlag
&& (*status
& UART_LSR_OE
) /*&& !(*status&UART_LSR_DR) */ )
2087 outb(0x23, info
->base
+ UART_FCR
);
2088 *status
&= info
->read_status_mask
;
2089 /* above add by Victor Yu. 09-02-2002 */
2090 if (*status
& info
->ignore_status_mask
) {
2091 if (++ignored
> 100)
2095 if (*status
& UART_LSR_SPECIAL
) {
2096 if (*status
& UART_LSR_BI
) {
2098 /* added by casper 1/11/2000 */
2101 if (info
->flags
& ASYNC_SAK
)
2103 } else if (*status
& UART_LSR_PE
) {
2105 /* added by casper 1/11/2000 */
2106 info
->icount
.parity
++;
2108 } else if (*status
& UART_LSR_FE
) {
2110 /* added by casper 1/11/2000 */
2111 info
->icount
.frame
++;
2113 } else if (*status
& UART_LSR_OE
) {
2115 /* added by casper 1/11/2000 */
2116 info
->icount
.overrun
++;
2120 tty_insert_flip_char(tty
, ch
, flag
);
2122 if (cnt
>= recv_room
) {
2123 if (!info
->ldisc_stop_rx
) {
2124 /* mxser_throttle(tty); */
2132 /* following add by Victor Yu. 09-02-2002 */
2133 if (info
->IsMoxaMustChipFlag
)
2135 /* above add by Victor Yu. 09-02-2002 */
2137 /* mask by Victor Yu. 09-02-2002
2138 *status = inb(info->base + UART_LSR) & info->read_status_mask;
2140 /* following add by Victor Yu. 09-02-2002 */
2141 *status
= inb(info
->base
+ UART_LSR
);
2142 /* above add by Victor Yu. 09-02-2002 */
2143 } while (*status
& UART_LSR_DR
);
2145 end_intr
: /* add by Victor Yu. 09-02-2002 */
2146 mxvar_log
.rxcnt
[info
->port
] += cnt
;
2147 info
->mon_data
.rxcnt
+= cnt
;
2148 info
->mon_data
.up_rxcnt
+= cnt
;
2149 spin_unlock_irqrestore(&info
->slock
, flags
);
2151 tty_flip_buffer_push(tty
);
2154 static void mxser_transmit_chars(struct mxser_struct
*info
)
2157 unsigned long flags
;
2159 spin_lock_irqsave(&info
->slock
, flags
);
2162 outb(info
->x_char
, info
->base
+ UART_TX
);
2164 mxvar_log
.txcnt
[info
->port
]++;
2165 info
->mon_data
.txcnt
++;
2166 info
->mon_data
.up_txcnt
++;
2168 /* added by casper 1/11/2000 */
2171 spin_unlock_irqrestore(&info
->slock
, flags
);
2175 if (info
->xmit_buf
== 0) {
2176 spin_unlock_irqrestore(&info
->slock
, flags
);
2180 if ((info
->xmit_cnt
<= 0) || info
->tty
->stopped
||
2181 (info
->tty
->hw_stopped
&&
2182 (info
->type
!= PORT_16550A
) &&
2183 (!info
->IsMoxaMustChipFlag
))) {
2184 info
->IER
&= ~UART_IER_THRI
;
2185 outb(info
->IER
, info
->base
+ UART_IER
);
2186 spin_unlock_irqrestore(&info
->slock
, flags
);
2190 cnt
= info
->xmit_cnt
;
2191 count
= info
->xmit_fifo_size
;
2193 outb(info
->xmit_buf
[info
->xmit_tail
++],
2194 info
->base
+ UART_TX
);
2195 info
->xmit_tail
= info
->xmit_tail
& (SERIAL_XMIT_SIZE
- 1);
2196 if (--info
->xmit_cnt
<= 0)
2198 } while (--count
> 0);
2199 mxvar_log
.txcnt
[info
->port
] += (cnt
- info
->xmit_cnt
);
2201 /* added by James 03-12-2004. */
2202 info
->mon_data
.txcnt
+= (cnt
- info
->xmit_cnt
);
2203 info
->mon_data
.up_txcnt
+= (cnt
- info
->xmit_cnt
);
2204 /* (above) added by James. */
2206 /* added by casper 1/11/2000 */
2207 info
->icount
.tx
+= (cnt
- info
->xmit_cnt
);
2210 if (info
->xmit_cnt
< WAKEUP_CHARS
) {
2211 set_bit(MXSER_EVENT_TXLOW
, &info
->event
);
2212 schedule_work(&info
->tqueue
);
2214 if (info
->xmit_cnt
<= 0) {
2215 info
->IER
&= ~UART_IER_THRI
;
2216 outb(info
->IER
, info
->base
+ UART_IER
);
2218 spin_unlock_irqrestore(&info
->slock
, flags
);
2221 static void mxser_check_modem_status(struct mxser_struct
*info
, int status
)
2223 /* update input line counters */
2224 if (status
& UART_MSR_TERI
)
2226 if (status
& UART_MSR_DDSR
)
2228 if (status
& UART_MSR_DDCD
)
2230 if (status
& UART_MSR_DCTS
)
2232 info
->mon_data
.modem_status
= status
;
2233 wake_up_interruptible(&info
->delta_msr_wait
);
2235 if ((info
->flags
& ASYNC_CHECK_CD
) && (status
& UART_MSR_DDCD
)) {
2236 if (status
& UART_MSR_DCD
)
2237 wake_up_interruptible(&info
->open_wait
);
2238 schedule_work(&info
->tqueue
);
2241 if (info
->flags
& ASYNC_CTS_FLOW
) {
2242 if (info
->tty
->hw_stopped
) {
2243 if (status
& UART_MSR_CTS
) {
2244 info
->tty
->hw_stopped
= 0;
2246 if ((info
->type
!= PORT_16550A
) &&
2247 (!info
->IsMoxaMustChipFlag
)) {
2248 info
->IER
|= UART_IER_THRI
;
2249 outb(info
->IER
, info
->base
+ UART_IER
);
2251 set_bit(MXSER_EVENT_TXLOW
, &info
->event
);
2252 schedule_work(&info
->tqueue
); }
2254 if (!(status
& UART_MSR_CTS
)) {
2255 info
->tty
->hw_stopped
= 1;
2256 if ((info
->type
!= PORT_16550A
) &&
2257 (!info
->IsMoxaMustChipFlag
)) {
2258 info
->IER
&= ~UART_IER_THRI
;
2259 outb(info
->IER
, info
->base
+ UART_IER
);
2266 static int mxser_block_til_ready(struct tty_struct
*tty
, struct file
*filp
, struct mxser_struct
*info
)
2268 DECLARE_WAITQUEUE(wait
, current
);
2271 unsigned long flags
;
2274 * If non-blocking mode is set, or the port is not enabled,
2275 * then make the check up front and then exit.
2277 if ((filp
->f_flags
& O_NONBLOCK
) || (tty
->flags
& (1 << TTY_IO_ERROR
))) {
2278 info
->flags
|= ASYNC_NORMAL_ACTIVE
;
2282 if (tty
->termios
->c_cflag
& CLOCAL
)
2286 * Block waiting for the carrier detect and the line to become
2287 * free (i.e., not in use by the callout). While we are in
2288 * this loop, info->count is dropped by one, so that
2289 * mxser_close() knows when to free things. We restore it upon
2290 * exit, either normal or abnormal.
2293 add_wait_queue(&info
->open_wait
, &wait
);
2295 spin_lock_irqsave(&info
->slock
, flags
);
2296 if (!tty_hung_up_p(filp
))
2298 spin_unlock_irqrestore(&info
->slock
, flags
);
2299 info
->blocked_open
++;
2301 spin_lock_irqsave(&info
->slock
, flags
);
2302 outb(inb(info
->base
+ UART_MCR
) |
2303 UART_MCR_DTR
| UART_MCR_RTS
, info
->base
+ UART_MCR
);
2304 spin_unlock_irqrestore(&info
->slock
, flags
);
2305 set_current_state(TASK_INTERRUPTIBLE
);
2306 if (tty_hung_up_p(filp
) || !(info
->flags
& ASYNC_INITIALIZED
)) {
2307 if (info
->flags
& ASYNC_HUP_NOTIFY
)
2310 retval
= -ERESTARTSYS
;
2313 if (!(info
->flags
& ASYNC_CLOSING
) &&
2315 (inb(info
->base
+ UART_MSR
) & UART_MSR_DCD
)))
2317 if (signal_pending(current
)) {
2318 retval
= -ERESTARTSYS
;
2323 set_current_state(TASK_RUNNING
);
2324 remove_wait_queue(&info
->open_wait
, &wait
);
2325 if (!tty_hung_up_p(filp
))
2327 info
->blocked_open
--;
2330 info
->flags
|= ASYNC_NORMAL_ACTIVE
;
2334 static int mxser_startup(struct mxser_struct
*info
)
2337 unsigned long flags
;
2339 page
= __get_free_page(GFP_KERNEL
);
2343 spin_lock_irqsave(&info
->slock
, flags
);
2345 if (info
->flags
& ASYNC_INITIALIZED
) {
2347 spin_unlock_irqrestore(&info
->slock
, flags
);
2351 if (!info
->base
|| !info
->type
) {
2353 set_bit(TTY_IO_ERROR
, &info
->tty
->flags
);
2355 spin_unlock_irqrestore(&info
->slock
, flags
);
2361 info
->xmit_buf
= (unsigned char *) page
;
2364 * Clear the FIFO buffers and disable them
2365 * (they will be reenabled in mxser_change_speed())
2367 if (info
->IsMoxaMustChipFlag
)
2368 outb((UART_FCR_CLEAR_RCVR
|
2369 UART_FCR_CLEAR_XMIT
|
2370 MOXA_MUST_FCR_GDA_MODE_ENABLE
), info
->base
+ UART_FCR
);
2372 outb((UART_FCR_CLEAR_RCVR
| UART_FCR_CLEAR_XMIT
),
2373 info
->base
+ UART_FCR
);
2376 * At this point there's no way the LSR could still be 0xFF;
2377 * if it is, then bail out, because there's likely no UART
2380 if (inb(info
->base
+ UART_LSR
) == 0xff) {
2381 spin_unlock_irqrestore(&info
->slock
, flags
);
2382 if (capable(CAP_SYS_ADMIN
)) {
2384 set_bit(TTY_IO_ERROR
, &info
->tty
->flags
);
2391 * Clear the interrupt registers.
2393 (void) inb(info
->base
+ UART_LSR
);
2394 (void) inb(info
->base
+ UART_RX
);
2395 (void) inb(info
->base
+ UART_IIR
);
2396 (void) inb(info
->base
+ UART_MSR
);
2399 * Now, initialize the UART
2401 outb(UART_LCR_WLEN8
, info
->base
+ UART_LCR
); /* reset DLAB */
2402 info
->MCR
= UART_MCR_DTR
| UART_MCR_RTS
;
2403 outb(info
->MCR
, info
->base
+ UART_MCR
);
2406 * Finally, enable interrupts
2408 info
->IER
= UART_IER_MSI
| UART_IER_RLSI
| UART_IER_RDI
;
2409 /* info->IER = UART_IER_RLSI | UART_IER_RDI; */
2411 /* following add by Victor Yu. 08-30-2002 */
2412 if (info
->IsMoxaMustChipFlag
)
2413 info
->IER
|= MOXA_MUST_IER_EGDAI
;
2414 /* above add by Victor Yu. 08-30-2002 */
2415 outb(info
->IER
, info
->base
+ UART_IER
); /* enable interrupts */
2418 * And clear the interrupt registers again for luck.
2420 (void) inb(info
->base
+ UART_LSR
);
2421 (void) inb(info
->base
+ UART_RX
);
2422 (void) inb(info
->base
+ UART_IIR
);
2423 (void) inb(info
->base
+ UART_MSR
);
2426 clear_bit(TTY_IO_ERROR
, &info
->tty
->flags
);
2427 info
->xmit_cnt
= info
->xmit_head
= info
->xmit_tail
= 0;
2430 * and set the speed of the serial port
2432 spin_unlock_irqrestore(&info
->slock
, flags
);
2433 mxser_change_speed(info
, NULL
);
2435 info
->flags
|= ASYNC_INITIALIZED
;
2440 * This routine will shutdown a serial port; interrupts maybe disabled, and
2441 * DTR is dropped if the hangup on close termio flag is on.
2443 static void mxser_shutdown(struct mxser_struct
*info
)
2445 unsigned long flags
;
2447 if (!(info
->flags
& ASYNC_INITIALIZED
))
2450 spin_lock_irqsave(&info
->slock
, flags
);
2453 * clear delta_msr_wait queue to avoid mem leaks: we may free the irq
2454 * here so the queue might never be waken up
2456 wake_up_interruptible(&info
->delta_msr_wait
);
2459 * Free the IRQ, if necessary
2461 if (info
->xmit_buf
) {
2462 free_page((unsigned long) info
->xmit_buf
);
2463 info
->xmit_buf
= NULL
;
2467 outb(0x00, info
->base
+ UART_IER
);
2469 if (!info
->tty
|| (info
->tty
->termios
->c_cflag
& HUPCL
))
2470 info
->MCR
&= ~(UART_MCR_DTR
| UART_MCR_RTS
);
2471 outb(info
->MCR
, info
->base
+ UART_MCR
);
2473 /* clear Rx/Tx FIFO's */
2474 /* following add by Victor Yu. 08-30-2002 */
2475 if (info
->IsMoxaMustChipFlag
)
2476 outb((UART_FCR_CLEAR_RCVR
|
2477 UART_FCR_CLEAR_XMIT
|
2478 MOXA_MUST_FCR_GDA_MODE_ENABLE
), info
->base
+ UART_FCR
);
2480 /* above add by Victor Yu. 08-30-2002 */
2481 outb((UART_FCR_CLEAR_RCVR
| UART_FCR_CLEAR_XMIT
),
2482 info
->base
+ UART_FCR
);
2484 /* read data port to reset things */
2485 (void) inb(info
->base
+ UART_RX
);
2488 set_bit(TTY_IO_ERROR
, &info
->tty
->flags
);
2490 info
->flags
&= ~ASYNC_INITIALIZED
;
2492 /* following add by Victor Yu. 09-23-2002 */
2493 if (info
->IsMoxaMustChipFlag
)
2494 SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info
->base
);
2495 /* above add by Victor Yu. 09-23-2002 */
2497 spin_unlock_irqrestore(&info
->slock
, flags
);
2501 * This routine is called to set the UART divisor registers to match
2502 * the specified baud rate for a serial port.
2504 static int mxser_change_speed(struct mxser_struct
*info
, struct ktermios
*old_termios
)
2506 unsigned cflag
, cval
, fcr
;
2508 unsigned char status
;
2510 unsigned long flags
;
2512 if (!info
->tty
|| !info
->tty
->termios
)
2514 cflag
= info
->tty
->termios
->c_cflag
;
2519 #define B921600 (B460800 +1)
2521 if (mxser_set_baud_method
[info
->port
] == 0) {
2522 baud
= tty_get_baud_rate(info
->tty
);
2523 mxser_set_baud(info
, baud
);
2526 /* byte size and parity */
2527 switch (cflag
& CSIZE
) {
2542 break; /* too keep GCC shut... */
2547 cval
|= UART_LCR_PARITY
;
2548 if (!(cflag
& PARODD
))
2549 cval
|= UART_LCR_EPAR
;
2551 cval
|= UART_LCR_SPAR
;
2553 if ((info
->type
== PORT_8250
) || (info
->type
== PORT_16450
)) {
2554 if (info
->IsMoxaMustChipFlag
) {
2555 fcr
= UART_FCR_ENABLE_FIFO
;
2556 fcr
|= MOXA_MUST_FCR_GDA_MODE_ENABLE
;
2557 SET_MOXA_MUST_FIFO_VALUE(info
);
2561 fcr
= UART_FCR_ENABLE_FIFO
;
2562 /* following add by Victor Yu. 08-30-2002 */
2563 if (info
->IsMoxaMustChipFlag
) {
2564 fcr
|= MOXA_MUST_FCR_GDA_MODE_ENABLE
;
2565 SET_MOXA_MUST_FIFO_VALUE(info
);
2567 /* above add by Victor Yu. 08-30-2002 */
2568 switch (info
->rx_trigger
) {
2570 fcr
|= UART_FCR_TRIGGER_1
;
2573 fcr
|= UART_FCR_TRIGGER_4
;
2576 fcr
|= UART_FCR_TRIGGER_8
;
2579 fcr
|= UART_FCR_TRIGGER_14
;
2585 /* CTS flow control flag and modem status interrupts */
2586 info
->IER
&= ~UART_IER_MSI
;
2587 info
->MCR
&= ~UART_MCR_AFE
;
2588 if (cflag
& CRTSCTS
) {
2589 info
->flags
|= ASYNC_CTS_FLOW
;
2590 info
->IER
|= UART_IER_MSI
;
2591 if ((info
->type
== PORT_16550A
) || (info
->IsMoxaMustChipFlag
)) {
2592 info
->MCR
|= UART_MCR_AFE
;
2594 status
= inb(info
->base
+ UART_MSR
);
2595 if (info
->tty
->hw_stopped
) {
2596 if (status
& UART_MSR_CTS
) {
2597 info
->tty
->hw_stopped
= 0;
2598 if ((info
->type
!= PORT_16550A
) &&
2599 (!info
->IsMoxaMustChipFlag
)) {
2600 info
->IER
|= UART_IER_THRI
;
2601 outb(info
->IER
, info
->base
+ UART_IER
);
2603 set_bit(MXSER_EVENT_TXLOW
, &info
->event
);
2604 schedule_work(&info
->tqueue
); }
2606 if (!(status
& UART_MSR_CTS
)) {
2607 info
->tty
->hw_stopped
= 1;
2608 if ((info
->type
!= PORT_16550A
) &&
2609 (!info
->IsMoxaMustChipFlag
)) {
2610 info
->IER
&= ~UART_IER_THRI
;
2611 outb(info
->IER
, info
->base
+ UART_IER
);
2617 info
->flags
&= ~ASYNC_CTS_FLOW
;
2619 outb(info
->MCR
, info
->base
+ UART_MCR
);
2620 if (cflag
& CLOCAL
) {
2621 info
->flags
&= ~ASYNC_CHECK_CD
;
2623 info
->flags
|= ASYNC_CHECK_CD
;
2624 info
->IER
|= UART_IER_MSI
;
2626 outb(info
->IER
, info
->base
+ UART_IER
);
2629 * Set up parity check flag
2631 info
->read_status_mask
= UART_LSR_OE
| UART_LSR_THRE
| UART_LSR_DR
;
2632 if (I_INPCK(info
->tty
))
2633 info
->read_status_mask
|= UART_LSR_FE
| UART_LSR_PE
;
2634 if (I_BRKINT(info
->tty
) || I_PARMRK(info
->tty
))
2635 info
->read_status_mask
|= UART_LSR_BI
;
2637 info
->ignore_status_mask
= 0;
2639 if (I_IGNBRK(info
->tty
)) {
2640 info
->ignore_status_mask
|= UART_LSR_BI
;
2641 info
->read_status_mask
|= UART_LSR_BI
;
2643 * If we're ignore parity and break indicators, ignore
2644 * overruns too. (For real raw support).
2646 if (I_IGNPAR(info
->tty
)) {
2647 info
->ignore_status_mask
|=
2651 info
->read_status_mask
|=
2657 /* following add by Victor Yu. 09-02-2002 */
2658 if (info
->IsMoxaMustChipFlag
) {
2659 spin_lock_irqsave(&info
->slock
, flags
);
2660 SET_MOXA_MUST_XON1_VALUE(info
->base
, START_CHAR(info
->tty
));
2661 SET_MOXA_MUST_XOFF1_VALUE(info
->base
, STOP_CHAR(info
->tty
));
2662 if (I_IXON(info
->tty
)) {
2663 ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info
->base
);
2665 DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info
->base
);
2667 if (I_IXOFF(info
->tty
)) {
2668 ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info
->base
);
2670 DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info
->base
);
2673 if ( I_IXANY(info->tty) ) {
2674 info->MCR |= MOXA_MUST_MCR_XON_ANY;
2675 ENABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->base);
2677 info->MCR &= ~MOXA_MUST_MCR_XON_ANY;
2678 DISABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->base);
2681 spin_unlock_irqrestore(&info
->slock
, flags
);
2683 /* above add by Victor Yu. 09-02-2002 */
2686 outb(fcr
, info
->base
+ UART_FCR
); /* set fcr */
2687 outb(cval
, info
->base
+ UART_LCR
);
2693 static int mxser_set_baud(struct mxser_struct
*info
, long newspd
)
2698 unsigned long flags
;
2700 if (!info
->tty
|| !info
->tty
->termios
)
2706 if (newspd
> info
->MaxCanSetBaudRate
)
2709 info
->realbaud
= newspd
;
2710 if (newspd
== 134) {
2711 quot
= (2 * info
->baud_base
/ 269);
2712 } else if (newspd
) {
2713 quot
= info
->baud_base
/ newspd
;
2720 info
->timeout
= ((info
->xmit_fifo_size
* HZ
* 10 * quot
) / info
->baud_base
);
2721 info
->timeout
+= HZ
/ 50; /* Add .02 seconds of slop */
2724 spin_lock_irqsave(&info
->slock
, flags
);
2725 info
->MCR
|= UART_MCR_DTR
;
2726 outb(info
->MCR
, info
->base
+ UART_MCR
);
2727 spin_unlock_irqrestore(&info
->slock
, flags
);
2729 spin_lock_irqsave(&info
->slock
, flags
);
2730 info
->MCR
&= ~UART_MCR_DTR
;
2731 outb(info
->MCR
, info
->base
+ UART_MCR
);
2732 spin_unlock_irqrestore(&info
->slock
, flags
);
2736 cval
= inb(info
->base
+ UART_LCR
);
2738 outb(cval
| UART_LCR_DLAB
, info
->base
+ UART_LCR
); /* set DLAB */
2740 outb(quot
& 0xff, info
->base
+ UART_DLL
); /* LS of divisor */
2741 outb(quot
>> 8, info
->base
+ UART_DLM
); /* MS of divisor */
2742 outb(cval
, info
->base
+ UART_LCR
); /* reset DLAB */
2749 * ------------------------------------------------------------
2750 * friends of mxser_ioctl()
2751 * ------------------------------------------------------------
2753 static int mxser_get_serial_info(struct mxser_struct
*info
, struct serial_struct __user
*retinfo
)
2755 struct serial_struct tmp
;
2759 memset(&tmp
, 0, sizeof(tmp
));
2760 tmp
.type
= info
->type
;
2761 tmp
.line
= info
->port
;
2762 tmp
.port
= info
->base
;
2763 tmp
.irq
= info
->irq
;
2764 tmp
.flags
= info
->flags
;
2765 tmp
.baud_base
= info
->baud_base
;
2766 tmp
.close_delay
= info
->close_delay
;
2767 tmp
.closing_wait
= info
->closing_wait
;
2768 tmp
.custom_divisor
= info
->custom_divisor
;
2770 if (copy_to_user(retinfo
, &tmp
, sizeof(*retinfo
)))
2775 static int mxser_set_serial_info(struct mxser_struct
*info
, struct serial_struct __user
*new_info
)
2777 struct serial_struct new_serial
;
2781 if (!new_info
|| !info
->base
)
2783 if (copy_from_user(&new_serial
, new_info
, sizeof(new_serial
)))
2786 if ((new_serial
.irq
!= info
->irq
) ||
2787 (new_serial
.port
!= info
->base
) ||
2788 (new_serial
.custom_divisor
!= info
->custom_divisor
) ||
2789 (new_serial
.baud_base
!= info
->baud_base
))
2792 flags
= info
->flags
& ASYNC_SPD_MASK
;
2794 if (!capable(CAP_SYS_ADMIN
)) {
2795 if ((new_serial
.baud_base
!= info
->baud_base
) ||
2796 (new_serial
.close_delay
!= info
->close_delay
) ||
2797 ((new_serial
.flags
& ~ASYNC_USR_MASK
) != (info
->flags
& ~ASYNC_USR_MASK
)))
2799 info
->flags
= ((info
->flags
& ~ASYNC_USR_MASK
) |
2800 (new_serial
.flags
& ASYNC_USR_MASK
));
2803 * OK, past this point, all the error checking has been done.
2804 * At this point, we start making changes.....
2806 info
->flags
= ((info
->flags
& ~ASYNC_FLAGS
) |
2807 (new_serial
.flags
& ASYNC_FLAGS
));
2808 info
->close_delay
= new_serial
.close_delay
* HZ
/ 100;
2809 info
->closing_wait
= new_serial
.closing_wait
* HZ
/ 100;
2810 info
->tty
->low_latency
=
2811 (info
->flags
& ASYNC_LOW_LATENCY
) ? 1 : 0;
2812 info
->tty
->low_latency
= 0; /* (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; */
2815 /* added by casper, 3/17/2000, for mouse */
2816 info
->type
= new_serial
.type
;
2818 process_txrx_fifo(info
);
2820 if (info
->flags
& ASYNC_INITIALIZED
) {
2821 if (flags
!= (info
->flags
& ASYNC_SPD_MASK
)) {
2822 mxser_change_speed(info
, NULL
);
2825 retval
= mxser_startup(info
);
2831 * mxser_get_lsr_info - get line status register info
2833 * Purpose: Let user call ioctl() to get info when the UART physically
2834 * is emptied. On bus types like RS485, the transmitter must
2835 * release the bus after transmitting. This must be done when
2836 * the transmit shift register is empty, not be done when the
2837 * transmit holding register is empty. This functionality
2838 * allows an RS485 driver to be written in user space.
2840 static int mxser_get_lsr_info(struct mxser_struct
*info
, unsigned int __user
*value
)
2842 unsigned char status
;
2843 unsigned int result
;
2844 unsigned long flags
;
2846 spin_lock_irqsave(&info
->slock
, flags
);
2847 status
= inb(info
->base
+ UART_LSR
);
2848 spin_unlock_irqrestore(&info
->slock
, flags
);
2849 result
= ((status
& UART_LSR_TEMT
) ? TIOCSER_TEMT
: 0);
2850 return put_user(result
, value
);
2854 * This routine sends a break character out the serial port.
2856 static void mxser_send_break(struct mxser_struct
*info
, int duration
)
2858 unsigned long flags
;
2862 set_current_state(TASK_INTERRUPTIBLE
);
2863 spin_lock_irqsave(&info
->slock
, flags
);
2864 outb(inb(info
->base
+ UART_LCR
) | UART_LCR_SBC
,
2865 info
->base
+ UART_LCR
);
2866 spin_unlock_irqrestore(&info
->slock
, flags
);
2867 schedule_timeout(duration
);
2868 spin_lock_irqsave(&info
->slock
, flags
);
2869 outb(inb(info
->base
+ UART_LCR
) & ~UART_LCR_SBC
,
2870 info
->base
+ UART_LCR
);
2871 spin_unlock_irqrestore(&info
->slock
, flags
);
2874 static int mxser_tiocmget(struct tty_struct
*tty
, struct file
*file
)
2876 struct mxser_struct
*info
= tty
->driver_data
;
2877 unsigned char control
, status
;
2878 unsigned long flags
;
2881 if (tty
->index
== MXSER_PORTS
)
2882 return -ENOIOCTLCMD
;
2883 if (tty
->flags
& (1 << TTY_IO_ERROR
))
2886 control
= info
->MCR
;
2888 spin_lock_irqsave(&info
->slock
, flags
);
2889 status
= inb(info
->base
+ UART_MSR
);
2890 if (status
& UART_MSR_ANY_DELTA
)
2891 mxser_check_modem_status(info
, status
);
2892 spin_unlock_irqrestore(&info
->slock
, flags
);
2893 return ((control
& UART_MCR_RTS
) ? TIOCM_RTS
: 0) |
2894 ((control
& UART_MCR_DTR
) ? TIOCM_DTR
: 0) |
2895 ((status
& UART_MSR_DCD
) ? TIOCM_CAR
: 0) |
2896 ((status
& UART_MSR_RI
) ? TIOCM_RNG
: 0) |
2897 ((status
& UART_MSR_DSR
) ? TIOCM_DSR
: 0) |
2898 ((status
& UART_MSR_CTS
) ? TIOCM_CTS
: 0);
2901 static int mxser_tiocmset(struct tty_struct
*tty
, struct file
*file
, unsigned int set
, unsigned int clear
)
2903 struct mxser_struct
*info
= tty
->driver_data
;
2904 unsigned long flags
;
2907 if (tty
->index
== MXSER_PORTS
)
2908 return -ENOIOCTLCMD
;
2909 if (tty
->flags
& (1 << TTY_IO_ERROR
))
2912 spin_lock_irqsave(&info
->slock
, flags
);
2914 if (set
& TIOCM_RTS
)
2915 info
->MCR
|= UART_MCR_RTS
;
2916 if (set
& TIOCM_DTR
)
2917 info
->MCR
|= UART_MCR_DTR
;
2919 if (clear
& TIOCM_RTS
)
2920 info
->MCR
&= ~UART_MCR_RTS
;
2921 if (clear
& TIOCM_DTR
)
2922 info
->MCR
&= ~UART_MCR_DTR
;
2924 outb(info
->MCR
, info
->base
+ UART_MCR
);
2925 spin_unlock_irqrestore(&info
->slock
, flags
);
2930 static int mxser_read_register(int, unsigned short *);
2931 static int mxser_program_mode(int);
2932 static void mxser_normal_mode(int);
2934 static int mxser_get_ISA_conf(int cap
, struct mxser_hwconf
*hwconf
)
2937 unsigned short regs
[16], irq
;
2938 unsigned char scratch
, scratch2
;
2940 hwconf
->IsMoxaMustChipFlag
= MOXA_OTHER_UART
;
2942 id
= mxser_read_register(cap
, regs
);
2943 if (id
== C168_ASIC_ID
) {
2944 hwconf
->board_type
= MXSER_BOARD_C168_ISA
;
2946 } else if (id
== C104_ASIC_ID
) {
2947 hwconf
->board_type
= MXSER_BOARD_C104_ISA
;
2949 } else if (id
== C102_ASIC_ID
) {
2950 hwconf
->board_type
= MXSER_BOARD_C102_ISA
;
2952 } else if (id
== CI132_ASIC_ID
) {
2953 hwconf
->board_type
= MXSER_BOARD_CI132
;
2955 } else if (id
== CI134_ASIC_ID
) {
2956 hwconf
->board_type
= MXSER_BOARD_CI134
;
2958 } else if (id
== CI104J_ASIC_ID
) {
2959 hwconf
->board_type
= MXSER_BOARD_CI104J
;
2965 if (hwconf
->ports
== 2) {
2966 irq
= regs
[9] & 0xF000;
2967 irq
= irq
| (irq
>> 4);
2968 if (irq
!= (regs
[9] & 0xFF00))
2969 return MXSER_ERR_IRQ_CONFLIT
;
2970 } else if (hwconf
->ports
== 4) {
2971 irq
= regs
[9] & 0xF000;
2972 irq
= irq
| (irq
>> 4);
2973 irq
= irq
| (irq
>> 8);
2975 return MXSER_ERR_IRQ_CONFLIT
;
2976 } else if (hwconf
->ports
== 8) {
2977 irq
= regs
[9] & 0xF000;
2978 irq
= irq
| (irq
>> 4);
2979 irq
= irq
| (irq
>> 8);
2980 if ((irq
!= regs
[9]) || (irq
!= regs
[10]))
2981 return MXSER_ERR_IRQ_CONFLIT
;
2985 return MXSER_ERR_IRQ
;
2986 hwconf
->irq
= ((int)(irq
& 0xF000) >> 12);
2987 for (i
= 0; i
< 8; i
++)
2988 hwconf
->ioaddr
[i
] = (int) regs
[i
+ 1] & 0xFFF8;
2989 if ((regs
[12] & 0x80) == 0)
2990 return MXSER_ERR_VECTOR
;
2991 hwconf
->vector
= (int)regs
[11]; /* interrupt vector */
2993 hwconf
->vector_mask
= 0x00FF;
2995 hwconf
->vector_mask
= 0x000F;
2996 for (i
= 7, bits
= 0x0100; i
>= 0; i
--, bits
<<= 1) {
2997 if (regs
[12] & bits
) {
2998 hwconf
->baud_base
[i
] = 921600;
2999 hwconf
->MaxCanSetBaudRate
[i
] = 921600; /* add by Victor Yu. 09-04-2002 */
3001 hwconf
->baud_base
[i
] = 115200;
3002 hwconf
->MaxCanSetBaudRate
[i
] = 115200; /* add by Victor Yu. 09-04-2002 */
3005 scratch2
= inb(cap
+ UART_LCR
) & (~UART_LCR_DLAB
);
3006 outb(scratch2
| UART_LCR_DLAB
, cap
+ UART_LCR
);
3007 outb(0, cap
+ UART_EFR
); /* EFR is the same as FCR */
3008 outb(scratch2
, cap
+ UART_LCR
);
3009 outb(UART_FCR_ENABLE_FIFO
, cap
+ UART_FCR
);
3010 scratch
= inb(cap
+ UART_IIR
);
3013 hwconf
->uart_type
= PORT_16550A
;
3015 hwconf
->uart_type
= PORT_16450
;
3020 request_region(hwconf
->ioaddr
[0], 8 * hwconf
->ports
, "mxser(IO)");
3021 request_region(hwconf
->vector
, 1, "mxser(vector)");
3022 return hwconf
->ports
;
3025 #define CHIP_SK 0x01 /* Serial Data Clock in Eprom */
3026 #define CHIP_DO 0x02 /* Serial Data Output in Eprom */
3027 #define CHIP_CS 0x04 /* Serial Chip Select in Eprom */
3028 #define CHIP_DI 0x08 /* Serial Data Input in Eprom */
3029 #define EN_CCMD 0x000 /* Chip's command register */
3030 #define EN0_RSARLO 0x008 /* Remote start address reg 0 */
3031 #define EN0_RSARHI 0x009 /* Remote start address reg 1 */
3032 #define EN0_RCNTLO 0x00A /* Remote byte count reg WR */
3033 #define EN0_RCNTHI 0x00B /* Remote byte count reg WR */
3034 #define EN0_DCFG 0x00E /* Data configuration reg WR */
3035 #define EN0_PORT 0x010 /* Rcv missed frame error counter RD */
3036 #define ENC_PAGE0 0x000 /* Select page 0 of chip registers */
3037 #define ENC_PAGE3 0x0C0 /* Select page 3 of chip registers */
3038 static int mxser_read_register(int port
, unsigned short *regs
)
3040 int i
, k
, value
, id
;
3043 id
= mxser_program_mode(port
);
3046 for (i
= 0; i
< 14; i
++) {
3047 k
= (i
& 0x3F) | 0x180;
3048 for (j
= 0x100; j
> 0; j
>>= 1) {
3049 outb(CHIP_CS
, port
);
3051 outb(CHIP_CS
| CHIP_DO
, port
);
3052 outb(CHIP_CS
| CHIP_DO
| CHIP_SK
, port
); /* A? bit of read */
3054 outb(CHIP_CS
, port
);
3055 outb(CHIP_CS
| CHIP_SK
, port
); /* A? bit of read */
3060 for (k
= 0, j
= 0x8000; k
< 16; k
++, j
>>= 1) {
3061 outb(CHIP_CS
, port
);
3062 outb(CHIP_CS
| CHIP_SK
, port
);
3063 if (inb(port
) & CHIP_DI
)
3069 mxser_normal_mode(port
);
3073 static int mxser_program_mode(int port
)
3076 /* unsigned long flags; */
3078 spin_lock(&gm_lock
);
3086 /* restore_flags(flags); */
3087 spin_unlock(&gm_lock
);
3089 id
= inb(port
+ 1) & 0x1F;
3090 if ((id
!= C168_ASIC_ID
) &&
3091 (id
!= C104_ASIC_ID
) &&
3092 (id
!= C102_ASIC_ID
) &&
3093 (id
!= CI132_ASIC_ID
) &&
3094 (id
!= CI134_ASIC_ID
) &&
3095 (id
!= CI104J_ASIC_ID
))
3097 for (i
= 0, j
= 0; i
< 4; i
++) {
3101 } else if ((j
== 1) && (n
== 1)) {
3112 static void mxser_normal_mode(int port
)
3116 outb(0xA5, port
+ 1);
3117 outb(0x80, port
+ 3);
3118 outb(12, port
+ 0); /* 9600 bps */
3120 outb(0x03, port
+ 3); /* 8 data bits */
3121 outb(0x13, port
+ 4); /* loop back mode */
3122 for (i
= 0; i
< 16; i
++) {
3124 if ((n
& 0x61) == 0x60)
3129 outb(0x00, port
+ 4);
3132 module_init(mxser_module_init
);
3133 module_exit(mxser_module_exit
);