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/autoconf.h>
41 #include <linux/errno.h>
42 #include <linux/signal.h>
43 #include <linux/sched.h>
44 #include <linux/timer.h>
45 #include <linux/interrupt.h>
46 #include <linux/tty.h>
47 #include <linux/tty_flip.h>
48 #include <linux/serial.h>
49 #include <linux/serial_reg.h>
50 #include <linux/major.h>
51 #include <linux/string.h>
52 #include <linux/fcntl.h>
53 #include <linux/ptrace.h>
54 #include <linux/gfp.h>
55 #include <linux/ioport.h>
57 #include <linux/smp_lock.h>
58 #include <linux/delay.h>
59 #include <linux/pci.h>
61 #include <asm/system.h>
64 #include <asm/bitops.h>
65 #include <asm/uaccess.h>
69 #define MXSER_VERSION "1.8"
70 #define MXSERMAJOR 174
71 #define MXSERCUMAJOR 175
73 #define MXSER_EVENT_TXLOW 1
74 #define MXSER_EVENT_HANGUP 2
76 #define MXSER_BOARDS 4 /* Max. boards */
77 #define MXSER_PORTS 32 /* Max. ports */
78 #define MXSER_PORTS_PER_BOARD 8 /* Max. ports per board */
79 #define MXSER_ISR_PASS_LIMIT 256
81 #define MXSER_ERR_IOADDR -1
82 #define MXSER_ERR_IRQ -2
83 #define MXSER_ERR_IRQ_CONFLIT -3
84 #define MXSER_ERR_VECTOR -4
86 #define SERIAL_TYPE_NORMAL 1
87 #define SERIAL_TYPE_CALLOUT 2
89 #define WAKEUP_CHARS 256
91 #define UART_MCR_AFE 0x20
92 #define UART_LSR_SPECIAL 0x1E
94 #define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK|\
97 #define IRQ_T(info) ((info->flags & ASYNC_SHARE_IRQ) ? IRQF_SHARED : IRQF_DISABLED)
99 #define C168_ASIC_ID 1
100 #define C104_ASIC_ID 2
101 #define C102_ASIC_ID 0xB
102 #define CI132_ASIC_ID 4
103 #define CI134_ASIC_ID 3
104 #define CI104J_ASIC_ID 5
107 MXSER_BOARD_C168_ISA
= 1,
108 MXSER_BOARD_C104_ISA
,
110 MXSER_BOARD_C168_PCI
,
111 MXSER_BOARD_C104_PCI
,
112 MXSER_BOARD_C102_ISA
,
130 static char *mxser_brdname
[] = {
148 "Moxa UC7000 Serial",
154 static int mxser_numports
[] = {
178 #define UART_TYPE_NUM 2
180 static const unsigned int Gmoxa_uart_id
[UART_TYPE_NUM
] = {
181 MOXA_MUST_MU150_HWID
,
185 /* This is only for PCI */
186 #define UART_INFO_NUM 3
187 struct mxpciuart_info
{
198 static const struct mxpciuart_info Gpci_uart_info
[UART_INFO_NUM
] = {
199 {MOXA_OTHER_UART
, 16, 16, 16, 14, 14, 1, 921600L},
200 {MOXA_MUST_MU150_HWID
, 64, 64, 64, 48, 48, 16, 230400L},
201 {MOXA_MUST_MU860_HWID
, 128, 128, 128, 96, 96, 32, 921600L}
207 static struct pci_device_id mxser_pcibrds
[] = {
208 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_C168
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_C168_PCI
},
209 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_C104
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_C104_PCI
},
210 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP132
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP132
},
211 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP114
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP114
},
212 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CT114
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CT114
},
213 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP102
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP102
},
214 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP104U
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP104U
},
215 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP168U
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP168U
},
216 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP132U
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP132U
},
217 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP134U
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP134U
},
218 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP104JU
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP104JU
},
219 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_RC7000
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_RC7000
},
220 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP118U
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP118U
},
221 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP102UL
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP102UL
},
222 {PCI_VENDOR_ID_MOXA
, PCI_DEVICE_ID_MOXA_CP102U
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, MXSER_BOARD_CP102U
},
226 MODULE_DEVICE_TABLE(pci
, mxser_pcibrds
);
231 typedef struct _moxa_pci_info
{
232 unsigned short busNum
;
233 unsigned short devNum
;
234 struct pci_dev
*pdev
; /* add by Victor Yu. 06-23-2003 */
237 static int ioaddr
[MXSER_BOARDS
] = { 0, 0, 0, 0 };
238 static int ttymajor
= MXSERMAJOR
;
239 static int calloutmajor
= MXSERCUMAJOR
;
240 static int verbose
= 0;
242 /* Variables for insmod */
244 MODULE_AUTHOR("Casper Yang");
245 MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver");
246 module_param_array(ioaddr
, int, NULL
, 0);
247 module_param(ttymajor
, int, 0);
248 module_param(calloutmajor
, int, 0);
249 module_param(verbose
, bool, 0);
250 MODULE_LICENSE("GPL");
254 unsigned long rxcnt
[MXSER_PORTS
];
255 unsigned long txcnt
[MXSER_PORTS
];
262 unsigned long up_rxcnt
;
263 unsigned long up_txcnt
;
265 unsigned char hold_reason
;
268 struct mxser_mon_ext
{
269 unsigned long rx_cnt
[32];
270 unsigned long tx_cnt
[32];
271 unsigned long up_rxcnt
[32];
272 unsigned long up_txcnt
[32];
273 int modem_status
[32];
284 struct mxser_hwconf
{
291 int ioaddr
[MXSER_PORTS_PER_BOARD
];
292 int baud_base
[MXSER_PORTS_PER_BOARD
];
293 moxa_pci_info pciInfo
;
294 int IsMoxaMustChipFlag
; /* add by Victor Yu. 08-30-2002 */
295 int MaxCanSetBaudRate
[MXSER_PORTS_PER_BOARD
]; /* add by Victor Yu. 09-04-2002 */
296 int opmode_ioaddr
[MXSER_PORTS_PER_BOARD
]; /* add by Victor Yu. 01-05-2004 */
299 struct mxser_struct
{
301 int base
; /* port base address */
302 int irq
; /* port using irq no. */
303 int vector
; /* port irq vector */
304 int vectormask
; /* port vector mask */
306 int rx_trigger
; /* Rx fifo trigger level */
308 int baud_base
; /* max. speed */
309 int flags
; /* defined in tty.h */
310 int type
; /* UART type */
311 struct tty_struct
*tty
;
312 int read_status_mask
;
313 int ignore_status_mask
;
316 int x_char
; /* xon/xoff character */
318 unsigned short closing_wait
;
319 int IER
; /* Interrupt Enable Register */
320 int MCR
; /* Modem control register */
322 int count
; /* # of fd on device */
323 int blocked_open
; /* # of blocked opens */
324 long session
; /* Session of opening process */
325 long pgrp
; /* pgrp of opening process */
326 unsigned char *xmit_buf
;
330 struct work_struct tqueue
;
331 struct ktermios normal_termios
;
332 struct ktermios callout_termios
;
333 wait_queue_head_t open_wait
;
334 wait_queue_head_t close_wait
;
335 wait_queue_head_t delta_msr_wait
;
336 struct async_icount icount
; /* kernel counters for the 4 input interrupts */
338 int IsMoxaMustChipFlag
; /* add by Victor Yu. 08-30-2002 */
339 int MaxCanSetBaudRate
; /* add by Victor Yu. 09-04-2002 */
340 int opmode_ioaddr
; /* add by Victor Yu. 01-05-2004 */
341 unsigned char stop_rx
;
342 unsigned char ldisc_stop_rx
;
344 struct mxser_mon mon_data
;
345 unsigned char err_shadow
;
349 struct mxser_mstatus
{
357 static struct mxser_mstatus GMStatus
[MXSER_PORTS
];
359 static int mxserBoardCAP
[MXSER_BOARDS
] = {
361 /* 0x180, 0x280, 0x200, 0x320 */
364 static struct tty_driver
*mxvar_sdriver
;
365 static struct mxser_struct mxvar_table
[MXSER_PORTS
];
366 static struct tty_struct
*mxvar_tty
[MXSER_PORTS
+ 1];
367 static struct ktermios
*mxvar_termios
[MXSER_PORTS
+ 1];
368 static struct ktermios
*mxvar_termios_locked
[MXSER_PORTS
+ 1];
369 static struct mxser_log mxvar_log
;
370 static int mxvar_diagflag
;
371 static unsigned char mxser_msr
[MXSER_PORTS
+ 1];
372 static struct mxser_mon_ext mon_data_ext
;
373 static int mxser_set_baud_method
[MXSER_PORTS
+ 1];
374 static spinlock_t gm_lock
;
377 * This is used to figure out the divisor speeds and the timeouts
380 static struct mxser_hwconf mxsercfg
[MXSER_BOARDS
];
386 static void mxser_getcfg(int board
, struct mxser_hwconf
*hwconf
);
387 static int mxser_init(void);
389 /* static void mxser_poll(unsigned long); */
390 static int mxser_get_ISA_conf(int, struct mxser_hwconf
*);
391 static int mxser_get_PCI_conf(int, int, int, struct mxser_hwconf
*);
392 static void mxser_do_softint(struct work_struct
*);
393 static int mxser_open(struct tty_struct
*, struct file
*);
394 static void mxser_close(struct tty_struct
*, struct file
*);
395 static int mxser_write(struct tty_struct
*, const unsigned char *, int);
396 static int mxser_write_room(struct tty_struct
*);
397 static void mxser_flush_buffer(struct tty_struct
*);
398 static int mxser_chars_in_buffer(struct tty_struct
*);
399 static void mxser_flush_chars(struct tty_struct
*);
400 static void mxser_put_char(struct tty_struct
*, unsigned char);
401 static int mxser_ioctl(struct tty_struct
*, struct file
*, uint
, ulong
);
402 static int mxser_ioctl_special(unsigned int, void __user
*);
403 static void mxser_throttle(struct tty_struct
*);
404 static void mxser_unthrottle(struct tty_struct
*);
405 static void mxser_set_termios(struct tty_struct
*, struct ktermios
*);
406 static void mxser_stop(struct tty_struct
*);
407 static void mxser_start(struct tty_struct
*);
408 static void mxser_hangup(struct tty_struct
*);
409 static void mxser_rs_break(struct tty_struct
*, int);
410 static irqreturn_t
mxser_interrupt(int, void *);
411 static void mxser_receive_chars(struct mxser_struct
*, int *);
412 static void mxser_transmit_chars(struct mxser_struct
*);
413 static void mxser_check_modem_status(struct mxser_struct
*, int);
414 static int mxser_block_til_ready(struct tty_struct
*, struct file
*, struct mxser_struct
*);
415 static int mxser_startup(struct mxser_struct
*);
416 static void mxser_shutdown(struct mxser_struct
*);
417 static int mxser_change_speed(struct mxser_struct
*, struct ktermios
*old_termios
);
418 static int mxser_get_serial_info(struct mxser_struct
*, struct serial_struct __user
*);
419 static int mxser_set_serial_info(struct mxser_struct
*, struct serial_struct __user
*);
420 static int mxser_get_lsr_info(struct mxser_struct
*, unsigned int __user
*);
421 static void mxser_send_break(struct mxser_struct
*, int);
422 static int mxser_tiocmget(struct tty_struct
*, struct file
*);
423 static int mxser_tiocmset(struct tty_struct
*, struct file
*, unsigned int, unsigned int);
424 static int mxser_set_baud(struct mxser_struct
*info
, long newspd
);
425 static void mxser_wait_until_sent(struct tty_struct
*tty
, int timeout
);
427 static void mxser_startrx(struct tty_struct
*tty
);
428 static void mxser_stoprx(struct tty_struct
*tty
);
431 static int CheckIsMoxaMust(int io
)
436 outb(0, io
+ UART_LCR
);
437 DISABLE_MOXA_MUST_ENCHANCE_MODE(io
);
438 oldmcr
= inb(io
+ UART_MCR
);
439 outb(0, io
+ UART_MCR
);
440 SET_MOXA_MUST_XON1_VALUE(io
, 0x11);
441 if ((hwid
= inb(io
+ UART_MCR
)) != 0) {
442 outb(oldmcr
, io
+ UART_MCR
);
443 return MOXA_OTHER_UART
;
446 GET_MOXA_MUST_HARDWARE_ID(io
, &hwid
);
447 for (i
= 0; i
< UART_TYPE_NUM
; i
++) {
448 if (hwid
== Gmoxa_uart_id
[i
])
451 return MOXA_OTHER_UART
;
454 /* above is modified by Victor Yu. 08-15-2002 */
456 static const struct tty_operations mxser_ops
= {
458 .close
= mxser_close
,
459 .write
= mxser_write
,
460 .put_char
= mxser_put_char
,
461 .flush_chars
= mxser_flush_chars
,
462 .write_room
= mxser_write_room
,
463 .chars_in_buffer
= mxser_chars_in_buffer
,
464 .flush_buffer
= mxser_flush_buffer
,
465 .ioctl
= mxser_ioctl
,
466 .throttle
= mxser_throttle
,
467 .unthrottle
= mxser_unthrottle
,
468 .set_termios
= mxser_set_termios
,
470 .start
= mxser_start
,
471 .hangup
= mxser_hangup
,
472 .break_ctl
= mxser_rs_break
,
473 .wait_until_sent
= mxser_wait_until_sent
,
474 .tiocmget
= mxser_tiocmget
,
475 .tiocmset
= mxser_tiocmset
,
479 * The MOXA Smartio/Industio serial driver boot-time initialization code!
482 static int __init
mxser_module_init(void)
487 printk(KERN_DEBUG
"Loading module mxser ...\n");
490 printk(KERN_DEBUG
"Done.\n");
494 static void __exit
mxser_module_exit(void)
499 printk(KERN_DEBUG
"Unloading module mxser ...\n");
501 err
= tty_unregister_driver(mxvar_sdriver
);
503 put_tty_driver(mxvar_sdriver
);
505 printk(KERN_ERR
"Couldn't unregister MOXA Smartio/Industio family serial driver\n");
507 for (i
= 0; i
< MXSER_BOARDS
; i
++) {
508 struct pci_dev
*pdev
;
510 if (mxsercfg
[i
].board_type
== -1)
513 pdev
= mxsercfg
[i
].pciInfo
.pdev
;
514 free_irq(mxsercfg
[i
].irq
, &mxvar_table
[i
* MXSER_PORTS_PER_BOARD
]);
515 if (pdev
!= NULL
) { /* PCI */
516 release_region(pci_resource_start(pdev
, 2), pci_resource_len(pdev
, 2));
517 release_region(pci_resource_start(pdev
, 3), pci_resource_len(pdev
, 3));
520 release_region(mxsercfg
[i
].ioaddr
[0], 8 * mxsercfg
[i
].ports
);
521 release_region(mxsercfg
[i
].vector
, 1);
526 printk(KERN_DEBUG
"Done.\n");
529 static void process_txrx_fifo(struct mxser_struct
*info
)
533 if ((info
->type
== PORT_16450
) || (info
->type
== PORT_8250
)) {
534 info
->rx_trigger
= 1;
535 info
->rx_high_water
= 1;
536 info
->rx_low_water
= 1;
537 info
->xmit_fifo_size
= 1;
539 for (i
= 0; i
< UART_INFO_NUM
; i
++) {
540 if (info
->IsMoxaMustChipFlag
== Gpci_uart_info
[i
].type
) {
541 info
->rx_trigger
= Gpci_uart_info
[i
].rx_trigger
;
542 info
->rx_low_water
= Gpci_uart_info
[i
].rx_low_water
;
543 info
->rx_high_water
= Gpci_uart_info
[i
].rx_high_water
;
544 info
->xmit_fifo_size
= Gpci_uart_info
[i
].xmit_fifo_size
;
551 static int mxser_initbrd(int board
, struct mxser_hwconf
*hwconf
)
553 struct mxser_struct
*info
;
557 n
= board
* MXSER_PORTS_PER_BOARD
;
558 info
= &mxvar_table
[n
];
560 printk(KERN_DEBUG
" ttyMI%d - ttyMI%d ",
561 n
, n
+ hwconf
->ports
- 1);
562 printk(" max. baud rate = %d bps.\n",
563 hwconf
->MaxCanSetBaudRate
[0]);
566 for (i
= 0; i
< hwconf
->ports
; i
++, n
++, info
++) {
568 info
->base
= hwconf
->ioaddr
[i
];
569 info
->irq
= hwconf
->irq
;
570 info
->vector
= hwconf
->vector
;
571 info
->vectormask
= hwconf
->vector_mask
;
572 info
->opmode_ioaddr
= hwconf
->opmode_ioaddr
[i
]; /* add by Victor Yu. 01-05-2004 */
574 info
->ldisc_stop_rx
= 0;
576 info
->IsMoxaMustChipFlag
= hwconf
->IsMoxaMustChipFlag
;
577 /* Enhance mode enabled here */
578 if (info
->IsMoxaMustChipFlag
!= MOXA_OTHER_UART
) {
579 ENABLE_MOXA_MUST_ENCHANCE_MODE(info
->base
);
582 info
->flags
= ASYNC_SHARE_IRQ
;
583 info
->type
= hwconf
->uart_type
;
584 info
->baud_base
= hwconf
->baud_base
[i
];
586 info
->MaxCanSetBaudRate
= hwconf
->MaxCanSetBaudRate
[i
];
588 process_txrx_fifo(info
);
591 info
->custom_divisor
= hwconf
->baud_base
[i
] * 16;
592 info
->close_delay
= 5 * HZ
/ 10;
593 info
->closing_wait
= 30 * HZ
;
594 INIT_WORK(&info
->tqueue
, mxser_do_softint
);
595 info
->normal_termios
= mxvar_sdriver
->init_termios
;
596 init_waitqueue_head(&info
->open_wait
);
597 init_waitqueue_head(&info
->close_wait
);
598 init_waitqueue_head(&info
->delta_msr_wait
);
599 memset(&info
->mon_data
, 0, sizeof(struct mxser_mon
));
600 info
->err_shadow
= 0;
601 spin_lock_init(&info
->slock
);
604 * Allocate the IRQ if necessary
608 /* before set INT ISR, disable all int */
609 for (i
= 0; i
< hwconf
->ports
; i
++) {
610 outb(inb(hwconf
->ioaddr
[i
] + UART_IER
) & 0xf0,
611 hwconf
->ioaddr
[i
] + UART_IER
);
614 n
= board
* MXSER_PORTS_PER_BOARD
;
615 info
= &mxvar_table
[n
];
617 retval
= request_irq(hwconf
->irq
, mxser_interrupt
, IRQ_T(info
),
620 printk(KERN_ERR
"Board %d: %s",
621 board
, mxser_brdname
[hwconf
->board_type
- 1]);
622 printk(" Request irq failed, IRQ (%d) may conflict with"
623 " another device.\n", info
->irq
);
629 static void mxser_getcfg(int board
, struct mxser_hwconf
*hwconf
)
631 mxsercfg
[board
] = *hwconf
;
635 static int mxser_get_PCI_conf(int busnum
, int devnum
, int board_type
, struct mxser_hwconf
*hwconf
)
638 /* unsigned int val; */
639 unsigned int ioaddress
;
640 struct pci_dev
*pdev
= hwconf
->pciInfo
.pdev
;
643 hwconf
->board_type
= board_type
;
644 hwconf
->ports
= mxser_numports
[board_type
- 1];
645 ioaddress
= pci_resource_start(pdev
, 2);
646 request_region(pci_resource_start(pdev
, 2), pci_resource_len(pdev
, 2),
649 for (i
= 0; i
< hwconf
->ports
; i
++)
650 hwconf
->ioaddr
[i
] = ioaddress
+ 8 * i
;
653 ioaddress
= pci_resource_start(pdev
, 3);
654 request_region(pci_resource_start(pdev
, 3), pci_resource_len(pdev
, 3),
656 hwconf
->vector
= ioaddress
;
659 hwconf
->irq
= hwconf
->pciInfo
.pdev
->irq
;
661 hwconf
->IsMoxaMustChipFlag
= CheckIsMoxaMust(hwconf
->ioaddr
[0]);
662 hwconf
->uart_type
= PORT_16550A
;
663 hwconf
->vector_mask
= 0;
666 for (i
= 0; i
< hwconf
->ports
; i
++) {
667 for (j
= 0; j
< UART_INFO_NUM
; j
++) {
668 if (Gpci_uart_info
[j
].type
== hwconf
->IsMoxaMustChipFlag
) {
669 hwconf
->MaxCanSetBaudRate
[i
] = Gpci_uart_info
[j
].max_baud
;
671 /* exception....CP-102 */
672 if (board_type
== MXSER_BOARD_CP102
)
673 hwconf
->MaxCanSetBaudRate
[i
] = 921600;
679 if (hwconf
->IsMoxaMustChipFlag
== MOXA_MUST_MU860_HWID
) {
680 for (i
= 0; i
< hwconf
->ports
; i
++) {
682 hwconf
->opmode_ioaddr
[i
] = ioaddress
+ 4;
684 hwconf
->opmode_ioaddr
[i
] = ioaddress
+ 0x0c;
686 outb(0, ioaddress
+ 4); /* default set to RS232 mode */
687 outb(0, ioaddress
+ 0x0c); /* default set to RS232 mode */
690 for (i
= 0; i
< hwconf
->ports
; i
++) {
691 hwconf
->vector_mask
|= (1 << i
);
692 hwconf
->baud_base
[i
] = 921600;
698 static int mxser_init(void)
700 int i
, m
, retval
, b
, n
;
701 struct pci_dev
*pdev
= NULL
;
703 unsigned char busnum
, devnum
;
704 struct mxser_hwconf hwconf
;
706 mxvar_sdriver
= alloc_tty_driver(MXSER_PORTS
+ 1);
709 spin_lock_init(&gm_lock
);
711 for (i
= 0; i
< MXSER_BOARDS
; i
++) {
712 mxsercfg
[i
].board_type
= -1;
715 printk(KERN_INFO
"MOXA Smartio/Industio family driver version %s\n",
718 /* Initialize the tty_driver structure */
719 memset(mxvar_sdriver
, 0, sizeof(struct tty_driver
));
720 mxvar_sdriver
->magic
= TTY_DRIVER_MAGIC
;
721 mxvar_sdriver
->name
= "ttyMI";
722 mxvar_sdriver
->major
= ttymajor
;
723 mxvar_sdriver
->minor_start
= 0;
724 mxvar_sdriver
->num
= MXSER_PORTS
+ 1;
725 mxvar_sdriver
->type
= TTY_DRIVER_TYPE_SERIAL
;
726 mxvar_sdriver
->subtype
= SERIAL_TYPE_NORMAL
;
727 mxvar_sdriver
->init_termios
= tty_std_termios
;
728 mxvar_sdriver
->init_termios
.c_cflag
= B9600
|CS8
|CREAD
|HUPCL
|CLOCAL
;
729 mxvar_sdriver
->init_termios
.c_ispeed
= 9600;
730 mxvar_sdriver
->init_termios
.c_ospeed
= 9600;
731 mxvar_sdriver
->flags
= TTY_DRIVER_REAL_RAW
;
732 tty_set_operations(mxvar_sdriver
, &mxser_ops
);
733 mxvar_sdriver
->ttys
= mxvar_tty
;
734 mxvar_sdriver
->termios
= mxvar_termios
;
735 mxvar_sdriver
->termios_locked
= mxvar_termios_locked
;
738 memset(mxvar_table
, 0, MXSER_PORTS
* sizeof(struct mxser_struct
));
739 memset(&mxvar_log
, 0, sizeof(struct mxser_log
));
741 memset(&mxser_msr
, 0, sizeof(unsigned char) * (MXSER_PORTS
+ 1));
742 memset(&mon_data_ext
, 0, sizeof(struct mxser_mon_ext
));
743 memset(&mxser_set_baud_method
, 0, sizeof(int) * (MXSER_PORTS
+ 1));
744 memset(&hwconf
, 0, sizeof(struct mxser_hwconf
));
747 /* Start finding ISA boards here */
748 for (b
= 0; b
< MXSER_BOARDS
&& m
< MXSER_BOARDS
; b
++) {
751 if (!(cap
= mxserBoardCAP
[b
]))
754 retval
= mxser_get_ISA_conf(cap
, &hwconf
);
757 printk(KERN_INFO
"Found MOXA %s board (CAP=0x%x)\n",
758 mxser_brdname
[hwconf
.board_type
- 1], ioaddr
[b
]);
761 if (retval
== MXSER_ERR_IRQ
)
762 printk(KERN_ERR
"Invalid interrupt number, "
763 "board not configured\n");
764 else if (retval
== MXSER_ERR_IRQ_CONFLIT
)
765 printk(KERN_ERR
"Invalid interrupt number, "
766 "board not configured\n");
767 else if (retval
== MXSER_ERR_VECTOR
)
768 printk(KERN_ERR
"Invalid interrupt vector, "
769 "board not configured\n");
770 else if (retval
== MXSER_ERR_IOADDR
)
771 printk(KERN_ERR
"Invalid I/O address, "
772 "board not configured\n");
777 hwconf
.pciInfo
.busNum
= 0;
778 hwconf
.pciInfo
.devNum
= 0;
779 hwconf
.pciInfo
.pdev
= NULL
;
781 mxser_getcfg(m
, &hwconf
);
783 * init mxsercfg first,
784 * or mxsercfg data is not correct on ISR.
786 /* mxser_initbrd will hook ISR. */
787 if (mxser_initbrd(m
, &hwconf
) < 0)
793 /* Start finding ISA boards from module arg */
794 for (b
= 0; b
< MXSER_BOARDS
&& m
< MXSER_BOARDS
; b
++) {
797 if (!(cap
= ioaddr
[b
]))
800 retval
= mxser_get_ISA_conf(cap
, &hwconf
);
803 printk(KERN_INFO
"Found MOXA %s board (CAP=0x%x)\n",
804 mxser_brdname
[hwconf
.board_type
- 1], ioaddr
[b
]);
807 if (retval
== MXSER_ERR_IRQ
)
808 printk(KERN_ERR
"Invalid interrupt number, "
809 "board not configured\n");
810 else if (retval
== MXSER_ERR_IRQ_CONFLIT
)
811 printk(KERN_ERR
"Invalid interrupt number, "
812 "board not configured\n");
813 else if (retval
== MXSER_ERR_VECTOR
)
814 printk(KERN_ERR
"Invalid interrupt vector, "
815 "board not configured\n");
816 else if (retval
== MXSER_ERR_IOADDR
)
817 printk(KERN_ERR
"Invalid I/O address, "
818 "board not configured\n");
823 hwconf
.pciInfo
.busNum
= 0;
824 hwconf
.pciInfo
.devNum
= 0;
825 hwconf
.pciInfo
.pdev
= NULL
;
827 mxser_getcfg(m
, &hwconf
);
829 * init mxsercfg first,
830 * or mxsercfg data is not correct on ISR.
832 /* mxser_initbrd will hook ISR. */
833 if (mxser_initbrd(m
, &hwconf
) < 0)
839 /* start finding PCI board here */
841 n
= ARRAY_SIZE(mxser_pcibrds
) - 1;
845 pdev
= pci_get_device(mxser_pcibrds
[b
].vendor
,
846 mxser_pcibrds
[b
].device
, pdev
);
851 hwconf
.pciInfo
.busNum
= busnum
= pdev
->bus
->number
;
852 hwconf
.pciInfo
.devNum
= devnum
= PCI_SLOT(pdev
->devfn
) << 3;
853 hwconf
.pciInfo
.pdev
= pdev
;
854 printk(KERN_INFO
"Found MOXA %s board(BusNo=%d,DevNo=%d)\n",
855 mxser_brdname
[(int) (mxser_pcibrds
[b
].driver_data
) - 1],
856 busnum
, devnum
>> 3);
858 if (m
>= MXSER_BOARDS
)
860 "Too many Smartio/Industio family boards find "
861 "(maximum %d), board not configured\n",
864 if (pci_enable_device(pdev
)) {
865 printk(KERN_ERR
"Moxa SmartI/O PCI enable "
869 retval
= mxser_get_PCI_conf(busnum
, devnum
,
870 (int)mxser_pcibrds
[b
].driver_data
,
873 if (retval
== MXSER_ERR_IRQ
)
875 "Invalid interrupt number, "
876 "board not configured\n");
877 else if (retval
== MXSER_ERR_IRQ_CONFLIT
)
879 "Invalid interrupt number, "
880 "board not configured\n");
881 else if (retval
== MXSER_ERR_VECTOR
)
883 "Invalid interrupt vector, "
884 "board not configured\n");
885 else if (retval
== MXSER_ERR_IOADDR
)
887 "Invalid I/O address, "
888 "board not configured\n");
891 mxser_getcfg(m
, &hwconf
);
892 /* init mxsercfg first,
893 * or mxsercfg data is not correct on ISR.
895 /* mxser_initbrd will hook ISR. */
896 if (mxser_initbrd(m
, &hwconf
) < 0)
899 /* Keep an extra reference if we succeeded. It will
900 be returned at unload time */
906 retval
= tty_register_driver(mxvar_sdriver
);
908 printk(KERN_ERR
"Couldn't install MOXA Smartio/Industio family"
910 put_tty_driver(mxvar_sdriver
);
912 for (i
= 0; i
< MXSER_BOARDS
; i
++) {
913 if (mxsercfg
[i
].board_type
== -1)
916 free_irq(mxsercfg
[i
].irq
, &mxvar_table
[i
* MXSER_PORTS_PER_BOARD
]);
917 /* todo: release io, vector */
926 static void mxser_do_softint(struct work_struct
*work
)
928 struct mxser_struct
*info
=
929 container_of(work
, struct mxser_struct
, tqueue
);
930 struct tty_struct
*tty
;
935 if (test_and_clear_bit(MXSER_EVENT_TXLOW
, &info
->event
))
937 if (test_and_clear_bit(MXSER_EVENT_HANGUP
, &info
->event
))
942 static unsigned char mxser_get_msr(int baseaddr
, int mode
, int port
, struct mxser_struct
*info
)
944 unsigned char status
= 0;
946 status
= inb(baseaddr
+ UART_MSR
);
948 mxser_msr
[port
] &= 0x0F;
949 mxser_msr
[port
] |= status
;
950 status
= mxser_msr
[port
];
958 * This routine is called whenever a serial port is opened. It
959 * enables interrupts for a serial port, linking in its async structure into
960 * the IRQ chain. It also performs the serial-specific
961 * initialization for the tty structure.
963 static int mxser_open(struct tty_struct
*tty
, struct file
*filp
)
965 struct mxser_struct
*info
;
968 /* initialize driver_data in case something fails */
969 tty
->driver_data
= NULL
;
972 if (line
== MXSER_PORTS
)
974 if (line
< 0 || line
> MXSER_PORTS
)
976 info
= mxvar_table
+ line
;
980 tty
->driver_data
= info
;
983 * Start up serial port
985 retval
= mxser_startup(info
);
989 retval
= mxser_block_til_ready(tty
, filp
, info
);
995 if ((info
->count
== 1) && (info
->flags
& ASYNC_SPLIT_TERMIOS
)) {
996 if (tty
->driver
->subtype
== SERIAL_TYPE_NORMAL
)
997 *tty
->termios
= info
->normal_termios
;
999 *tty
->termios
= info
->callout_termios
;
1000 mxser_change_speed(info
, NULL
);
1003 info
->session
= process_session(current
);
1004 info
->pgrp
= process_group(current
);
1007 status = mxser_get_msr(info->base, 0, info->port);
1008 mxser_check_modem_status(info, status);
1011 /* unmark here for very high baud rate (ex. 921600 bps) used */
1012 tty
->low_latency
= 1;
1017 * This routine is called when the serial port gets closed. First, we
1018 * wait for the last remaining data to be sent. Then, we unlink its
1019 * async structure from the interrupt chain if necessary, and we free
1020 * that IRQ if nothing is left in the chain.
1022 static void mxser_close(struct tty_struct
*tty
, struct file
*filp
)
1024 struct mxser_struct
*info
= tty
->driver_data
;
1026 unsigned long timeout
;
1027 unsigned long flags
;
1028 struct tty_ldisc
*ld
;
1030 if (tty
->index
== MXSER_PORTS
)
1035 spin_lock_irqsave(&info
->slock
, flags
);
1037 if (tty_hung_up_p(filp
)) {
1038 spin_unlock_irqrestore(&info
->slock
, flags
);
1041 if ((tty
->count
== 1) && (info
->count
!= 1)) {
1043 * Uh, oh. tty->count is 1, which means that the tty
1044 * structure will be freed. Info->count should always
1045 * be one in these conditions. If it's greater than
1046 * one, we've got real problems, since it means the
1047 * serial port won't be shutdown.
1049 printk(KERN_ERR
"mxser_close: bad serial port count; "
1050 "tty->count is 1, info->count is %d\n", info
->count
);
1053 if (--info
->count
< 0) {
1054 printk(KERN_ERR
"mxser_close: bad serial port count for "
1055 "ttys%d: %d\n", info
->port
, info
->count
);
1059 spin_unlock_irqrestore(&info
->slock
, flags
);
1062 info
->flags
|= ASYNC_CLOSING
;
1063 spin_unlock_irqrestore(&info
->slock
, flags
);
1065 * Save the termios structure, since this port may have
1066 * separate termios for callout and dialin.
1068 if (info
->flags
& ASYNC_NORMAL_ACTIVE
)
1069 info
->normal_termios
= *tty
->termios
;
1071 * Now we wait for the transmit buffer to clear; and we notify
1072 * the line discipline to only process XON/XOFF characters.
1075 if (info
->closing_wait
!= ASYNC_CLOSING_WAIT_NONE
)
1076 tty_wait_until_sent(tty
, info
->closing_wait
);
1078 * At this point we stop accepting input. To do this, we
1079 * disable the receive line status interrupts, and tell the
1080 * interrupt driver to stop checking the data ready bit in the
1081 * line status register.
1083 info
->IER
&= ~UART_IER_RLSI
;
1084 if (info
->IsMoxaMustChipFlag
)
1085 info
->IER
&= ~MOXA_MUST_RECV_ISR
;
1087 info->read_status_mask &= ~UART_LSR_DR;
1089 if (info
->flags
& ASYNC_INITIALIZED
) {
1090 outb(info
->IER
, info
->base
+ UART_IER
);
1092 * Before we drop DTR, make sure the UART transmitter
1093 * has completely drained; this is especially
1094 * important if there is a transmit FIFO!
1096 timeout
= jiffies
+ HZ
;
1097 while (!(inb(info
->base
+ UART_LSR
) & UART_LSR_TEMT
)) {
1098 schedule_timeout_interruptible(5);
1099 if (time_after(jiffies
, timeout
))
1103 mxser_shutdown(info
);
1105 if (tty
->driver
->flush_buffer
)
1106 tty
->driver
->flush_buffer(tty
);
1108 ld
= tty_ldisc_ref(tty
);
1110 if (ld
->flush_buffer
)
1111 ld
->flush_buffer(tty
);
1112 tty_ldisc_deref(ld
);
1118 if (info
->blocked_open
) {
1119 if (info
->close_delay
)
1120 schedule_timeout_interruptible(info
->close_delay
);
1121 wake_up_interruptible(&info
->open_wait
);
1124 info
->flags
&= ~(ASYNC_NORMAL_ACTIVE
| ASYNC_CLOSING
);
1125 wake_up_interruptible(&info
->close_wait
);
1129 static int mxser_write(struct tty_struct
*tty
, const unsigned char *buf
, int count
)
1132 struct mxser_struct
*info
= tty
->driver_data
;
1133 unsigned long flags
;
1135 if (!info
->xmit_buf
)
1139 c
= min_t(int, count
, min(SERIAL_XMIT_SIZE
- info
->xmit_cnt
- 1,
1140 SERIAL_XMIT_SIZE
- info
->xmit_head
));
1144 memcpy(info
->xmit_buf
+ info
->xmit_head
, buf
, c
);
1145 spin_lock_irqsave(&info
->slock
, flags
);
1146 info
->xmit_head
= (info
->xmit_head
+ c
) &
1147 (SERIAL_XMIT_SIZE
- 1);
1148 info
->xmit_cnt
+= c
;
1149 spin_unlock_irqrestore(&info
->slock
, flags
);
1156 if (info
->xmit_cnt
&& !tty
->stopped
&& !(info
->IER
& UART_IER_THRI
)) {
1157 if (!tty
->hw_stopped
||
1158 (info
->type
== PORT_16550A
) ||
1159 (info
->IsMoxaMustChipFlag
)) {
1160 spin_lock_irqsave(&info
->slock
, flags
);
1161 info
->IER
|= UART_IER_THRI
;
1162 outb(info
->IER
, info
->base
+ UART_IER
);
1163 spin_unlock_irqrestore(&info
->slock
, flags
);
1169 static void mxser_put_char(struct tty_struct
*tty
, unsigned char ch
)
1171 struct mxser_struct
*info
= tty
->driver_data
;
1172 unsigned long flags
;
1174 if (!info
->xmit_buf
)
1177 if (info
->xmit_cnt
>= SERIAL_XMIT_SIZE
- 1)
1180 spin_lock_irqsave(&info
->slock
, flags
);
1181 info
->xmit_buf
[info
->xmit_head
++] = ch
;
1182 info
->xmit_head
&= SERIAL_XMIT_SIZE
- 1;
1184 spin_unlock_irqrestore(&info
->slock
, flags
);
1185 if (!tty
->stopped
&& !(info
->IER
& UART_IER_THRI
)) {
1186 if (!tty
->hw_stopped
||
1187 (info
->type
== PORT_16550A
) ||
1188 info
->IsMoxaMustChipFlag
) {
1189 spin_lock_irqsave(&info
->slock
, flags
);
1190 info
->IER
|= UART_IER_THRI
;
1191 outb(info
->IER
, info
->base
+ UART_IER
);
1192 spin_unlock_irqrestore(&info
->slock
, flags
);
1198 static void mxser_flush_chars(struct tty_struct
*tty
)
1200 struct mxser_struct
*info
= tty
->driver_data
;
1201 unsigned long flags
;
1203 if (info
->xmit_cnt
<= 0 ||
1207 (info
->type
!= PORT_16550A
) &&
1208 (!info
->IsMoxaMustChipFlag
)
1212 spin_lock_irqsave(&info
->slock
, flags
);
1214 info
->IER
|= UART_IER_THRI
;
1215 outb(info
->IER
, info
->base
+ UART_IER
);
1217 spin_unlock_irqrestore(&info
->slock
, flags
);
1220 static int mxser_write_room(struct tty_struct
*tty
)
1222 struct mxser_struct
*info
= tty
->driver_data
;
1225 ret
= SERIAL_XMIT_SIZE
- info
->xmit_cnt
- 1;
1231 static int mxser_chars_in_buffer(struct tty_struct
*tty
)
1233 struct mxser_struct
*info
= tty
->driver_data
;
1234 return info
->xmit_cnt
;
1237 static void mxser_flush_buffer(struct tty_struct
*tty
)
1239 struct mxser_struct
*info
= tty
->driver_data
;
1241 unsigned long flags
;
1244 spin_lock_irqsave(&info
->slock
, flags
);
1245 info
->xmit_cnt
= info
->xmit_head
= info
->xmit_tail
= 0;
1247 /* below added by shinhay */
1248 fcr
= inb(info
->base
+ UART_FCR
);
1249 outb((fcr
| UART_FCR_CLEAR_RCVR
| UART_FCR_CLEAR_XMIT
),
1250 info
->base
+ UART_FCR
);
1251 outb(fcr
, info
->base
+ UART_FCR
);
1253 spin_unlock_irqrestore(&info
->slock
, flags
);
1254 /* above added by shinhay */
1256 wake_up_interruptible(&tty
->write_wait
);
1257 if ((tty
->flags
& (1 << TTY_DO_WRITE_WAKEUP
)) && tty
->ldisc
.write_wakeup
)
1258 (tty
->ldisc
.write_wakeup
) (tty
);
1261 static int mxser_ioctl(struct tty_struct
*tty
, struct file
*file
, unsigned int cmd
, unsigned long arg
)
1263 struct mxser_struct
*info
= tty
->driver_data
;
1265 struct async_icount cprev
, cnow
; /* kernel counter temps */
1266 struct serial_icounter_struct __user
*p_cuser
;
1267 unsigned long templ
;
1268 unsigned long flags
;
1269 void __user
*argp
= (void __user
*)arg
;
1271 if (tty
->index
== MXSER_PORTS
)
1272 return mxser_ioctl_special(cmd
, argp
);
1274 /* following add by Victor Yu. 01-05-2004 */
1275 if (cmd
== MOXA_SET_OP_MODE
|| cmd
== MOXA_GET_OP_MODE
) {
1277 static unsigned char ModeMask
[] = { 0xfc, 0xf3, 0xcf, 0x3f };
1279 unsigned char val
, mask
;
1282 if (cmd
== MOXA_SET_OP_MODE
) {
1283 if (get_user(opmode
, (int __user
*) argp
))
1285 if (opmode
!= RS232_MODE
&&
1286 opmode
!= RS485_2WIRE_MODE
&&
1287 opmode
!= RS422_MODE
&&
1288 opmode
!= RS485_4WIRE_MODE
)
1292 val
= inb(info
->opmode_ioaddr
);
1294 val
|= (opmode
<< shiftbit
);
1295 outb(val
, info
->opmode_ioaddr
);
1298 opmode
= inb(info
->opmode_ioaddr
) >> shiftbit
;
1299 opmode
&= OP_MODE_MASK
;
1300 if (copy_to_user(argp
, &opmode
, sizeof(int)))
1305 /* above add by Victor Yu. 01-05-2004 */
1307 if ((cmd
!= TIOCGSERIAL
) && (cmd
!= TIOCMIWAIT
) && (cmd
!= TIOCGICOUNT
)) {
1308 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1312 case TCSBRK
: /* SVID version: non-zero arg --> no break */
1313 retval
= tty_check_change(tty
);
1316 tty_wait_until_sent(tty
, 0);
1318 mxser_send_break(info
, HZ
/ 4); /* 1/4 second */
1320 case TCSBRKP
: /* support for POSIX tcsendbreak() */
1321 retval
= tty_check_change(tty
);
1324 tty_wait_until_sent(tty
, 0);
1325 mxser_send_break(info
, arg
? arg
* (HZ
/ 10) : HZ
/ 4);
1328 return put_user(C_CLOCAL(tty
) ? 1 : 0, (unsigned long __user
*)argp
);
1330 if (get_user(templ
, (unsigned long __user
*) argp
))
1333 tty
->termios
->c_cflag
= ((tty
->termios
->c_cflag
& ~CLOCAL
) | (arg
? CLOCAL
: 0));
1336 return mxser_get_serial_info(info
, argp
);
1338 return mxser_set_serial_info(info
, argp
);
1339 case TIOCSERGETLSR
: /* Get line status register */
1340 return mxser_get_lsr_info(info
, argp
);
1342 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
1343 * - mask passed in arg for lines of interest
1344 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
1345 * Caller should use TIOCGICOUNT to see which one it was
1348 DECLARE_WAITQUEUE(wait
, current
);
1350 spin_lock_irqsave(&info
->slock
, flags
);
1351 cprev
= info
->icount
; /* note the counters on entry */
1352 spin_unlock_irqrestore(&info
->slock
, flags
);
1354 add_wait_queue(&info
->delta_msr_wait
, &wait
);
1356 spin_lock_irqsave(&info
->slock
, flags
);
1357 cnow
= info
->icount
; /* atomic copy */
1358 spin_unlock_irqrestore(&info
->slock
, flags
);
1360 set_current_state(TASK_INTERRUPTIBLE
);
1361 if (((arg
& TIOCM_RNG
) &&
1362 (cnow
.rng
!= cprev
.rng
)) ||
1363 ((arg
& TIOCM_DSR
) &&
1364 (cnow
.dsr
!= cprev
.dsr
)) ||
1365 ((arg
& TIOCM_CD
) &&
1366 (cnow
.dcd
!= cprev
.dcd
)) ||
1367 ((arg
& TIOCM_CTS
) &&
1368 (cnow
.cts
!= cprev
.cts
))) {
1372 /* see if a signal did it */
1373 if (signal_pending(current
)) {
1379 current
->state
= TASK_RUNNING
;
1380 remove_wait_queue(&info
->delta_msr_wait
, &wait
);
1385 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
1386 * Return: write counters to the user passed counter struct
1387 * NB: both 1->0 and 0->1 transitions are counted except for
1388 * RI where only 0->1 is counted.
1391 spin_lock_irqsave(&info
->slock
, flags
);
1392 cnow
= info
->icount
;
1393 spin_unlock_irqrestore(&info
->slock
, flags
);
1395 /* modified by casper 1/11/2000 */
1396 if (put_user(cnow
.frame
, &p_cuser
->frame
))
1398 if (put_user(cnow
.brk
, &p_cuser
->brk
))
1400 if (put_user(cnow
.overrun
, &p_cuser
->overrun
))
1402 if (put_user(cnow
.buf_overrun
, &p_cuser
->buf_overrun
))
1404 if (put_user(cnow
.parity
, &p_cuser
->parity
))
1406 if (put_user(cnow
.rx
, &p_cuser
->rx
))
1408 if (put_user(cnow
.tx
, &p_cuser
->tx
))
1410 put_user(cnow
.cts
, &p_cuser
->cts
);
1411 put_user(cnow
.dsr
, &p_cuser
->dsr
);
1412 put_user(cnow
.rng
, &p_cuser
->rng
);
1413 put_user(cnow
.dcd
, &p_cuser
->dcd
);
1415 case MOXA_HighSpeedOn
:
1416 return put_user(info
->baud_base
!= 115200 ? 1 : 0, (int __user
*)argp
);
1417 case MOXA_SDS_RSTICOUNTER
: {
1418 info
->mon_data
.rxcnt
= 0;
1419 info
->mon_data
.txcnt
= 0;
1422 /* (above) added by James. */
1423 case MOXA_ASPP_SETBAUD
:{
1425 if (get_user(baud
, (long __user
*)argp
))
1427 mxser_set_baud(info
, baud
);
1430 case MOXA_ASPP_GETBAUD
:
1431 if (copy_to_user(argp
, &info
->realbaud
, sizeof(long)))
1436 case MOXA_ASPP_OQUEUE
:{
1439 len
= mxser_chars_in_buffer(tty
);
1441 lsr
= inb(info
->base
+ UART_LSR
) & UART_LSR_TEMT
;
1443 len
+= (lsr
? 0 : 1);
1445 if (copy_to_user(argp
, &len
, sizeof(int)))
1450 case MOXA_ASPP_MON
: {
1453 /* info->mon_data.ser_param = tty->termios->c_cflag; */
1455 status
= mxser_get_msr(info
->base
, 1, info
->port
, info
);
1456 mxser_check_modem_status(info
, status
);
1458 mcr
= inb(info
->base
+ UART_MCR
);
1459 if (mcr
& MOXA_MUST_MCR_XON_FLAG
)
1460 info
->mon_data
.hold_reason
&= ~NPPI_NOTIFY_XOFFHOLD
;
1462 info
->mon_data
.hold_reason
|= NPPI_NOTIFY_XOFFHOLD
;
1464 if (mcr
& MOXA_MUST_MCR_TX_XON
)
1465 info
->mon_data
.hold_reason
&= ~NPPI_NOTIFY_XOFFXENT
;
1467 info
->mon_data
.hold_reason
|= NPPI_NOTIFY_XOFFXENT
;
1469 if (info
->tty
->hw_stopped
)
1470 info
->mon_data
.hold_reason
|= NPPI_NOTIFY_CTSHOLD
;
1472 info
->mon_data
.hold_reason
&= ~NPPI_NOTIFY_CTSHOLD
;
1474 if (copy_to_user(argp
, &info
->mon_data
,
1475 sizeof(struct mxser_mon
)))
1481 case MOXA_ASPP_LSTATUS
: {
1482 if (copy_to_user(argp
, &info
->err_shadow
,
1483 sizeof(unsigned char)))
1486 info
->err_shadow
= 0;
1489 case MOXA_SET_BAUD_METHOD
: {
1492 if (get_user(method
, (int __user
*)argp
))
1494 mxser_set_baud_method
[info
->port
] = method
;
1495 if (copy_to_user(argp
, &method
, sizeof(int)))
1501 return -ENOIOCTLCMD
;
1507 #define CMSPAR 010000000000
1510 static int mxser_ioctl_special(unsigned int cmd
, void __user
*argp
)
1512 int i
, result
, status
;
1516 if (copy_to_user(argp
, mxsercfg
,
1517 sizeof(struct mxser_hwconf
) * 4))
1520 case MOXA_GET_MAJOR
:
1521 if (copy_to_user(argp
, &ttymajor
, sizeof(int)))
1525 case MOXA_GET_CUMAJOR
:
1526 if (copy_to_user(argp
, &calloutmajor
, sizeof(int)))
1530 case MOXA_CHKPORTENABLE
:
1532 for (i
= 0; i
< MXSER_PORTS
; i
++) {
1533 if (mxvar_table
[i
].base
)
1536 return put_user(result
, (unsigned long __user
*)argp
);
1537 case MOXA_GETDATACOUNT
:
1538 if (copy_to_user(argp
, &mxvar_log
, sizeof(mxvar_log
)))
1541 case MOXA_GETMSTATUS
:
1542 for (i
= 0; i
< MXSER_PORTS
; i
++) {
1544 if (!mxvar_table
[i
].base
) {
1545 GMStatus
[i
].dcd
= 0;
1546 GMStatus
[i
].dsr
= 0;
1547 GMStatus
[i
].cts
= 0;
1551 if (!mxvar_table
[i
].tty
|| !mxvar_table
[i
].tty
->termios
)
1552 GMStatus
[i
].cflag
= mxvar_table
[i
].normal_termios
.c_cflag
;
1554 GMStatus
[i
].cflag
= mxvar_table
[i
].tty
->termios
->c_cflag
;
1556 status
= inb(mxvar_table
[i
].base
+ UART_MSR
);
1557 if (status
& 0x80 /*UART_MSR_DCD */ )
1558 GMStatus
[i
].dcd
= 1;
1560 GMStatus
[i
].dcd
= 0;
1562 if (status
& 0x20 /*UART_MSR_DSR */ )
1563 GMStatus
[i
].dsr
= 1;
1565 GMStatus
[i
].dsr
= 0;
1568 if (status
& 0x10 /*UART_MSR_CTS */ )
1569 GMStatus
[i
].cts
= 1;
1571 GMStatus
[i
].cts
= 0;
1573 if (copy_to_user(argp
, GMStatus
,
1574 sizeof(struct mxser_mstatus
) * MXSER_PORTS
))
1577 case MOXA_ASPP_MON_EXT
: {
1581 unsigned cflag
, iflag
;
1583 for (i
= 0; i
< MXSER_PORTS
; i
++) {
1584 if (!mxvar_table
[i
].base
)
1587 status
= mxser_get_msr(mxvar_table
[i
].base
, 0,
1588 i
, &(mxvar_table
[i
]));
1590 mxser_check_modem_status(&mxvar_table[i],
1593 if (status
& UART_MSR_TERI
)
1594 mxvar_table
[i
].icount
.rng
++;
1595 if (status
& UART_MSR_DDSR
)
1596 mxvar_table
[i
].icount
.dsr
++;
1597 if (status
& UART_MSR_DDCD
)
1598 mxvar_table
[i
].icount
.dcd
++;
1599 if (status
& UART_MSR_DCTS
)
1600 mxvar_table
[i
].icount
.cts
++;
1602 mxvar_table
[i
].mon_data
.modem_status
= status
;
1603 mon_data_ext
.rx_cnt
[i
] = mxvar_table
[i
].mon_data
.rxcnt
;
1604 mon_data_ext
.tx_cnt
[i
] = mxvar_table
[i
].mon_data
.txcnt
;
1605 mon_data_ext
.up_rxcnt
[i
] = mxvar_table
[i
].mon_data
.up_rxcnt
;
1606 mon_data_ext
.up_txcnt
[i
] = mxvar_table
[i
].mon_data
.up_txcnt
;
1607 mon_data_ext
.modem_status
[i
] = mxvar_table
[i
].mon_data
.modem_status
;
1608 mon_data_ext
.baudrate
[i
] = mxvar_table
[i
].realbaud
;
1610 if (!mxvar_table
[i
].tty
|| !mxvar_table
[i
].tty
->termios
) {
1611 cflag
= mxvar_table
[i
].normal_termios
.c_cflag
;
1612 iflag
= mxvar_table
[i
].normal_termios
.c_iflag
;
1614 cflag
= mxvar_table
[i
].tty
->termios
->c_cflag
;
1615 iflag
= mxvar_table
[i
].tty
->termios
->c_iflag
;
1618 mon_data_ext
.databits
[i
] = cflag
& CSIZE
;
1620 mon_data_ext
.stopbits
[i
] = cflag
& CSTOPB
;
1622 mon_data_ext
.parity
[i
] = cflag
& (PARENB
| PARODD
| CMSPAR
);
1624 mon_data_ext
.flowctrl
[i
] = 0x00;
1626 if (cflag
& CRTSCTS
)
1627 mon_data_ext
.flowctrl
[i
] |= 0x03;
1629 if (iflag
& (IXON
| IXOFF
))
1630 mon_data_ext
.flowctrl
[i
] |= 0x0C;
1632 if (mxvar_table
[i
].type
== PORT_16550A
)
1633 mon_data_ext
.fifo
[i
] = 1;
1635 mon_data_ext
.fifo
[i
] = 0;
1639 opmode
= inb(mxvar_table
[i
].opmode_ioaddr
) >> shiftbit
;
1640 opmode
&= OP_MODE_MASK
;
1642 mon_data_ext
.iftype
[i
] = opmode
;
1645 if (copy_to_user(argp
, &mon_data_ext
, sizeof(struct mxser_mon_ext
)))
1652 return -ENOIOCTLCMD
;
1657 static void mxser_stoprx(struct tty_struct
*tty
)
1659 struct mxser_struct
*info
= tty
->driver_data
;
1660 /* unsigned long flags; */
1662 info
->ldisc_stop_rx
= 1;
1664 /* MX_LOCK(&info->slock); */
1665 /* following add by Victor Yu. 09-02-2002 */
1666 if (info
->IsMoxaMustChipFlag
) {
1667 info
->IER
&= ~MOXA_MUST_RECV_ISR
;
1668 outb(info
->IER
, info
->base
+ UART_IER
);
1670 /* above add by Victor Yu. 09-02-2002 */
1671 info
->x_char
= STOP_CHAR(tty
);
1672 /* mask by Victor Yu. 09-02-2002 */
1673 /* outb(info->IER, 0); */
1674 outb(0, info
->base
+ UART_IER
);
1675 info
->IER
|= UART_IER_THRI
;
1676 /* force Tx interrupt */
1677 outb(info
->IER
, info
->base
+ UART_IER
);
1678 } /* add by Victor Yu. 09-02-2002 */
1679 /* MX_UNLOCK(&info->slock); */
1682 if (info
->tty
->termios
->c_cflag
& CRTSCTS
) {
1683 /* MX_LOCK(&info->slock); */
1684 info
->MCR
&= ~UART_MCR_RTS
;
1685 outb(info
->MCR
, info
->base
+ UART_MCR
);
1686 /* MX_UNLOCK(&info->slock); */
1690 static void mxser_startrx(struct tty_struct
*tty
)
1692 struct mxser_struct
*info
= tty
->driver_data
;
1693 /* unsigned long flags; */
1695 info
->ldisc_stop_rx
= 0;
1700 /* MX_LOCK(&info->slock); */
1702 /* following add by Victor Yu. 09-02-2002 */
1703 if (info
->IsMoxaMustChipFlag
) {
1704 info
->IER
|= MOXA_MUST_RECV_ISR
;
1705 outb(info
->IER
, info
->base
+ UART_IER
);
1707 /* above add by Victor Yu. 09-02-2002 */
1709 info
->x_char
= START_CHAR(tty
);
1710 /* mask by Victor Yu. 09-02-2002 */
1711 /* outb(info->IER, 0); */
1712 /* add by Victor Yu. 09-02-2002 */
1713 outb(0, info
->base
+ UART_IER
);
1714 /* force Tx interrupt */
1715 info
->IER
|= UART_IER_THRI
;
1716 outb(info
->IER
, info
->base
+ UART_IER
);
1717 } /* add by Victor Yu. 09-02-2002 */
1718 /* MX_UNLOCK(&info->slock); */
1722 if (info
->tty
->termios
->c_cflag
& CRTSCTS
) {
1723 /* MX_LOCK(&info->slock); */
1724 info
->MCR
|= UART_MCR_RTS
;
1725 outb(info
->MCR
, info
->base
+ UART_MCR
);
1726 /* MX_UNLOCK(&info->slock); */
1731 * This routine is called by the upper-layer tty layer to signal that
1732 * incoming characters should be throttled.
1734 static void mxser_throttle(struct tty_struct
*tty
)
1736 /* struct mxser_struct *info = tty->driver_data; */
1737 /* unsigned long flags; */
1739 /* MX_LOCK(&info->slock); */
1741 /* MX_UNLOCK(&info->slock); */
1744 static void mxser_unthrottle(struct tty_struct
*tty
)
1746 /* struct mxser_struct *info = tty->driver_data; */
1747 /* unsigned long flags; */
1749 /* MX_LOCK(&info->slock); */
1751 /* MX_UNLOCK(&info->slock); */
1754 static void mxser_set_termios(struct tty_struct
*tty
, struct ktermios
*old_termios
)
1756 struct mxser_struct
*info
= tty
->driver_data
;
1757 unsigned long flags
;
1759 if ((tty
->termios
->c_cflag
!= old_termios
->c_cflag
) ||
1760 (RELEVANT_IFLAG(tty
->termios
->c_iflag
) != RELEVANT_IFLAG(old_termios
->c_iflag
))) {
1762 mxser_change_speed(info
, old_termios
);
1764 if ((old_termios
->c_cflag
& CRTSCTS
) &&
1765 !(tty
->termios
->c_cflag
& CRTSCTS
)) {
1766 tty
->hw_stopped
= 0;
1771 /* Handle sw stopped */
1772 if ((old_termios
->c_iflag
& IXON
) &&
1773 !(tty
->termios
->c_iflag
& IXON
)) {
1776 /* following add by Victor Yu. 09-02-2002 */
1777 if (info
->IsMoxaMustChipFlag
) {
1778 spin_lock_irqsave(&info
->slock
, flags
);
1779 DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info
->base
);
1780 spin_unlock_irqrestore(&info
->slock
, flags
);
1782 /* above add by Victor Yu. 09-02-2002 */
1789 * mxser_stop() and mxser_start()
1791 * This routines are called before setting or resetting tty->stopped.
1792 * They enable or disable transmitter interrupts, as necessary.
1794 static void mxser_stop(struct tty_struct
*tty
)
1796 struct mxser_struct
*info
= tty
->driver_data
;
1797 unsigned long flags
;
1799 spin_lock_irqsave(&info
->slock
, flags
);
1800 if (info
->IER
& UART_IER_THRI
) {
1801 info
->IER
&= ~UART_IER_THRI
;
1802 outb(info
->IER
, info
->base
+ UART_IER
);
1804 spin_unlock_irqrestore(&info
->slock
, flags
);
1807 static void mxser_start(struct tty_struct
*tty
)
1809 struct mxser_struct
*info
= tty
->driver_data
;
1810 unsigned long flags
;
1812 spin_lock_irqsave(&info
->slock
, flags
);
1813 if (info
->xmit_cnt
&& info
->xmit_buf
&& !(info
->IER
& UART_IER_THRI
)) {
1814 info
->IER
|= UART_IER_THRI
;
1815 outb(info
->IER
, info
->base
+ UART_IER
);
1817 spin_unlock_irqrestore(&info
->slock
, flags
);
1821 * mxser_wait_until_sent() --- wait until the transmitter is empty
1823 static void mxser_wait_until_sent(struct tty_struct
*tty
, int timeout
)
1825 struct mxser_struct
*info
= tty
->driver_data
;
1826 unsigned long orig_jiffies
, char_time
;
1829 if (info
->type
== PORT_UNKNOWN
)
1832 if (info
->xmit_fifo_size
== 0)
1833 return; /* Just in case.... */
1835 orig_jiffies
= jiffies
;
1837 * Set the check interval to be 1/5 of the estimated time to
1838 * send a single character, and make it at least 1. The check
1839 * interval should also be less than the timeout.
1841 * Note: we have to use pretty tight timings here to satisfy
1844 char_time
= (info
->timeout
- HZ
/ 50) / info
->xmit_fifo_size
;
1845 char_time
= char_time
/ 5;
1848 if (timeout
&& timeout
< char_time
)
1849 char_time
= timeout
;
1851 * If the transmitter hasn't cleared in twice the approximate
1852 * amount of time to send the entire FIFO, it probably won't
1853 * ever clear. This assumes the UART isn't doing flow
1854 * control, which is currently the case. Hence, if it ever
1855 * takes longer than info->timeout, this is probably due to a
1856 * UART bug of some kind. So, we clamp the timeout parameter at
1859 if (!timeout
|| timeout
> 2 * info
->timeout
)
1860 timeout
= 2 * info
->timeout
;
1861 #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
1862 printk(KERN_DEBUG
"In rs_wait_until_sent(%d) check=%lu...",
1863 timeout
, char_time
);
1864 printk("jiff=%lu...", jiffies
);
1866 while (!((lsr
= inb(info
->base
+ UART_LSR
)) & UART_LSR_TEMT
)) {
1867 #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
1868 printk("lsr = %d (jiff=%lu)...", lsr
, jiffies
);
1870 schedule_timeout_interruptible(char_time
);
1871 if (signal_pending(current
))
1873 if (timeout
&& time_after(jiffies
, orig_jiffies
+ timeout
))
1876 set_current_state(TASK_RUNNING
);
1878 #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
1879 printk("lsr = %d (jiff=%lu)...done\n", lsr
, jiffies
);
1885 * This routine is called by tty_hangup() when a hangup is signaled.
1887 void mxser_hangup(struct tty_struct
*tty
)
1889 struct mxser_struct
*info
= tty
->driver_data
;
1891 mxser_flush_buffer(tty
);
1892 mxser_shutdown(info
);
1895 info
->flags
&= ~ASYNC_NORMAL_ACTIVE
;
1897 wake_up_interruptible(&info
->open_wait
);
1901 /* added by James 03-12-2004. */
1903 * mxser_rs_break() --- routine which turns the break handling on or off
1905 static void mxser_rs_break(struct tty_struct
*tty
, int break_state
)
1907 struct mxser_struct
*info
= tty
->driver_data
;
1908 unsigned long flags
;
1910 spin_lock_irqsave(&info
->slock
, flags
);
1911 if (break_state
== -1)
1912 outb(inb(info
->base
+ UART_LCR
) | UART_LCR_SBC
,
1913 info
->base
+ UART_LCR
);
1915 outb(inb(info
->base
+ UART_LCR
) & ~UART_LCR_SBC
,
1916 info
->base
+ UART_LCR
);
1917 spin_unlock_irqrestore(&info
->slock
, flags
);
1920 /* (above) added by James. */
1924 * This is the serial driver's generic interrupt routine
1926 static irqreturn_t
mxser_interrupt(int irq
, void *dev_id
)
1929 struct mxser_struct
*info
;
1930 struct mxser_struct
*port
;
1931 int max
, irqbits
, bits
, msr
;
1932 int pass_counter
= 0;
1933 int handled
= IRQ_NONE
;
1936 /* spin_lock(&gm_lock); */
1938 for (i
= 0; i
< MXSER_BOARDS
; i
++) {
1939 if (dev_id
== &(mxvar_table
[i
* MXSER_PORTS_PER_BOARD
])) {
1945 if (i
== MXSER_BOARDS
)
1949 max
= mxser_numports
[mxsercfg
[i
].board_type
- 1];
1951 irqbits
= inb(port
->vector
) & port
->vectormask
;
1952 if (irqbits
== port
->vectormask
)
1955 handled
= IRQ_HANDLED
;
1956 for (i
= 0, bits
= 1; i
< max
; i
++, irqbits
|= bits
, bits
<<= 1) {
1957 if (irqbits
== port
->vectormask
)
1963 /* following add by Victor Yu. 09-13-2002 */
1964 iir
= inb(info
->base
+ UART_IIR
);
1965 if (iir
& UART_IIR_NO_INT
)
1967 iir
&= MOXA_MUST_IIR_MASK
;
1969 status
= inb(info
->base
+ UART_LSR
);
1970 outb(0x27, info
->base
+ UART_FCR
);
1971 inb(info
->base
+ UART_MSR
);
1974 /* above add by Victor Yu. 09-13-2002 */
1976 if (info->tty->flip.count < TTY_FLIPBUF_SIZE / 4) {
1977 info->IER |= MOXA_MUST_RECV_ISR;
1978 outb(info->IER, info->base + UART_IER);
1983 /* mask by Victor Yu. 09-13-2002
1985 (inb(info->base + UART_IIR) & UART_IIR_NO_INT) )
1988 /* mask by Victor Yu. 09-02-2002
1989 status = inb(info->base + UART_LSR) & info->read_status_mask;
1992 /* following add by Victor Yu. 09-02-2002 */
1993 status
= inb(info
->base
+ UART_LSR
);
1995 if (status
& UART_LSR_PE
)
1996 info
->err_shadow
|= NPPI_NOTIFY_PARITY
;
1997 if (status
& UART_LSR_FE
)
1998 info
->err_shadow
|= NPPI_NOTIFY_FRAMING
;
1999 if (status
& UART_LSR_OE
)
2000 info
->err_shadow
|= NPPI_NOTIFY_HW_OVERRUN
;
2001 if (status
& UART_LSR_BI
)
2002 info
->err_shadow
|= NPPI_NOTIFY_BREAK
;
2004 if (info
->IsMoxaMustChipFlag
) {
2006 if ( (status & 0x02) && !(status & 0x01) ) {
2007 outb(info->base+UART_FCR, 0x23);
2011 if (iir
== MOXA_MUST_IIR_GDA
||
2012 iir
== MOXA_MUST_IIR_RDA
||
2013 iir
== MOXA_MUST_IIR_RTO
||
2014 iir
== MOXA_MUST_IIR_LSR
)
2015 mxser_receive_chars(info
, &status
);
2018 /* above add by Victor Yu. 09-02-2002 */
2020 status
&= info
->read_status_mask
;
2021 if (status
& UART_LSR_DR
)
2022 mxser_receive_chars(info
, &status
);
2024 msr
= inb(info
->base
+ UART_MSR
);
2025 if (msr
& UART_MSR_ANY_DELTA
) {
2026 mxser_check_modem_status(info
, msr
);
2028 /* following add by Victor Yu. 09-13-2002 */
2029 if (info
->IsMoxaMustChipFlag
) {
2030 if ((iir
== 0x02) && (status
& UART_LSR_THRE
)) {
2031 mxser_transmit_chars(info
);
2034 /* above add by Victor Yu. 09-13-2002 */
2036 if (status
& UART_LSR_THRE
) {
2037 /* 8-2-99 by William
2038 if ( info->x_char || (info->xmit_cnt > 0) )
2040 mxser_transmit_chars(info
);
2044 if (pass_counter
++ > MXSER_ISR_PASS_LIMIT
) {
2045 break; /* Prevent infinite loops */
2050 /* spin_unlock(&gm_lock); */
2054 static void mxser_receive_chars(struct mxser_struct
*info
, int *status
)
2056 struct tty_struct
*tty
= info
->tty
;
2057 unsigned char ch
, gdl
;
2062 unsigned long flags
;
2064 spin_lock_irqsave(&info
->slock
, flags
);
2066 recv_room
= tty
->receive_room
;
2067 if ((recv_room
== 0) && (!info
->ldisc_stop_rx
)) {
2068 /* mxser_throttle(tty); */
2073 /* following add by Victor Yu. 09-02-2002 */
2074 if (info
->IsMoxaMustChipFlag
!= MOXA_OTHER_UART
) {
2076 if (*status
& UART_LSR_SPECIAL
) {
2079 /* following add by Victor Yu. 02-11-2004 */
2080 if (info
->IsMoxaMustChipFlag
== MOXA_MUST_MU860_HWID
&&
2081 (*status
& MOXA_MUST_LSR_RERR
))
2083 /* above add by Victor Yu. 02-14-2004 */
2084 if (*status
& MOXA_MUST_LSR_RERR
)
2087 gdl
= inb(info
->base
+ MOXA_MUST_GDL_REGISTER
);
2089 /* add by Victor Yu. 02-11-2004 */
2090 if (info
->IsMoxaMustChipFlag
== MOXA_MUST_MU150_HWID
)
2091 gdl
&= MOXA_MUST_GDL_MASK
;
2092 if (gdl
>= recv_room
) {
2093 if (!info
->ldisc_stop_rx
) {
2094 /* mxser_throttle(tty); */
2100 ch
= inb(info
->base
+ UART_RX
);
2101 tty_insert_flip_char(tty
, ch
, 0);
2104 if ((cnt >= HI_WATER) && (info->stop_rx == 0)) {
2113 /* above add by Victor Yu. 09-02-2002 */
2119 if ((cnt >= HI_WATER) && (info->stop_rx == 0)) {
2126 ch
= inb(info
->base
+ UART_RX
);
2127 /* following add by Victor Yu. 09-02-2002 */
2128 if (info
->IsMoxaMustChipFlag
&& (*status
& UART_LSR_OE
) /*&& !(*status&UART_LSR_DR) */ )
2129 outb(0x23, info
->base
+ UART_FCR
);
2130 *status
&= info
->read_status_mask
;
2131 /* above add by Victor Yu. 09-02-2002 */
2132 if (*status
& info
->ignore_status_mask
) {
2133 if (++ignored
> 100)
2137 if (*status
& UART_LSR_SPECIAL
) {
2138 if (*status
& UART_LSR_BI
) {
2140 /* added by casper 1/11/2000 */
2143 if (info
->flags
& ASYNC_SAK
)
2145 } else if (*status
& UART_LSR_PE
) {
2147 /* added by casper 1/11/2000 */
2148 info
->icount
.parity
++;
2150 } else if (*status
& UART_LSR_FE
) {
2152 /* added by casper 1/11/2000 */
2153 info
->icount
.frame
++;
2155 } else if (*status
& UART_LSR_OE
) {
2157 /* added by casper 1/11/2000 */
2158 info
->icount
.overrun
++;
2162 tty_insert_flip_char(tty
, ch
, flag
);
2164 if (cnt
>= recv_room
) {
2165 if (!info
->ldisc_stop_rx
) {
2166 /* mxser_throttle(tty); */
2174 /* following add by Victor Yu. 09-02-2002 */
2175 if (info
->IsMoxaMustChipFlag
)
2177 /* above add by Victor Yu. 09-02-2002 */
2179 /* mask by Victor Yu. 09-02-2002
2180 *status = inb(info->base + UART_LSR) & info->read_status_mask;
2182 /* following add by Victor Yu. 09-02-2002 */
2183 *status
= inb(info
->base
+ UART_LSR
);
2184 /* above add by Victor Yu. 09-02-2002 */
2185 } while (*status
& UART_LSR_DR
);
2187 end_intr
: /* add by Victor Yu. 09-02-2002 */
2188 mxvar_log
.rxcnt
[info
->port
] += cnt
;
2189 info
->mon_data
.rxcnt
+= cnt
;
2190 info
->mon_data
.up_rxcnt
+= cnt
;
2191 spin_unlock_irqrestore(&info
->slock
, flags
);
2193 tty_flip_buffer_push(tty
);
2196 static void mxser_transmit_chars(struct mxser_struct
*info
)
2199 unsigned long flags
;
2201 spin_lock_irqsave(&info
->slock
, flags
);
2204 outb(info
->x_char
, info
->base
+ UART_TX
);
2206 mxvar_log
.txcnt
[info
->port
]++;
2207 info
->mon_data
.txcnt
++;
2208 info
->mon_data
.up_txcnt
++;
2210 /* added by casper 1/11/2000 */
2213 spin_unlock_irqrestore(&info
->slock
, flags
);
2217 if (info
->xmit_buf
== 0) {
2218 spin_unlock_irqrestore(&info
->slock
, flags
);
2222 if ((info
->xmit_cnt
<= 0) || info
->tty
->stopped
||
2223 (info
->tty
->hw_stopped
&&
2224 (info
->type
!= PORT_16550A
) &&
2225 (!info
->IsMoxaMustChipFlag
))) {
2226 info
->IER
&= ~UART_IER_THRI
;
2227 outb(info
->IER
, info
->base
+ UART_IER
);
2228 spin_unlock_irqrestore(&info
->slock
, flags
);
2232 cnt
= info
->xmit_cnt
;
2233 count
= info
->xmit_fifo_size
;
2235 outb(info
->xmit_buf
[info
->xmit_tail
++],
2236 info
->base
+ UART_TX
);
2237 info
->xmit_tail
= info
->xmit_tail
& (SERIAL_XMIT_SIZE
- 1);
2238 if (--info
->xmit_cnt
<= 0)
2240 } while (--count
> 0);
2241 mxvar_log
.txcnt
[info
->port
] += (cnt
- info
->xmit_cnt
);
2243 /* added by James 03-12-2004. */
2244 info
->mon_data
.txcnt
+= (cnt
- info
->xmit_cnt
);
2245 info
->mon_data
.up_txcnt
+= (cnt
- info
->xmit_cnt
);
2246 /* (above) added by James. */
2248 /* added by casper 1/11/2000 */
2249 info
->icount
.tx
+= (cnt
- info
->xmit_cnt
);
2252 if (info
->xmit_cnt
< WAKEUP_CHARS
) {
2253 set_bit(MXSER_EVENT_TXLOW
, &info
->event
);
2254 schedule_work(&info
->tqueue
);
2256 if (info
->xmit_cnt
<= 0) {
2257 info
->IER
&= ~UART_IER_THRI
;
2258 outb(info
->IER
, info
->base
+ UART_IER
);
2260 spin_unlock_irqrestore(&info
->slock
, flags
);
2263 static void mxser_check_modem_status(struct mxser_struct
*info
, int status
)
2265 /* update input line counters */
2266 if (status
& UART_MSR_TERI
)
2268 if (status
& UART_MSR_DDSR
)
2270 if (status
& UART_MSR_DDCD
)
2272 if (status
& UART_MSR_DCTS
)
2274 info
->mon_data
.modem_status
= status
;
2275 wake_up_interruptible(&info
->delta_msr_wait
);
2277 if ((info
->flags
& ASYNC_CHECK_CD
) && (status
& UART_MSR_DDCD
)) {
2278 if (status
& UART_MSR_DCD
)
2279 wake_up_interruptible(&info
->open_wait
);
2280 schedule_work(&info
->tqueue
);
2283 if (info
->flags
& ASYNC_CTS_FLOW
) {
2284 if (info
->tty
->hw_stopped
) {
2285 if (status
& UART_MSR_CTS
) {
2286 info
->tty
->hw_stopped
= 0;
2288 if ((info
->type
!= PORT_16550A
) &&
2289 (!info
->IsMoxaMustChipFlag
)) {
2290 info
->IER
|= UART_IER_THRI
;
2291 outb(info
->IER
, info
->base
+ UART_IER
);
2293 set_bit(MXSER_EVENT_TXLOW
, &info
->event
);
2294 schedule_work(&info
->tqueue
); }
2296 if (!(status
& UART_MSR_CTS
)) {
2297 info
->tty
->hw_stopped
= 1;
2298 if ((info
->type
!= PORT_16550A
) &&
2299 (!info
->IsMoxaMustChipFlag
)) {
2300 info
->IER
&= ~UART_IER_THRI
;
2301 outb(info
->IER
, info
->base
+ UART_IER
);
2308 static int mxser_block_til_ready(struct tty_struct
*tty
, struct file
*filp
, struct mxser_struct
*info
)
2310 DECLARE_WAITQUEUE(wait
, current
);
2313 unsigned long flags
;
2316 * If non-blocking mode is set, or the port is not enabled,
2317 * then make the check up front and then exit.
2319 if ((filp
->f_flags
& O_NONBLOCK
) || (tty
->flags
& (1 << TTY_IO_ERROR
))) {
2320 info
->flags
|= ASYNC_NORMAL_ACTIVE
;
2324 if (tty
->termios
->c_cflag
& CLOCAL
)
2328 * Block waiting for the carrier detect and the line to become
2329 * free (i.e., not in use by the callout). While we are in
2330 * this loop, info->count is dropped by one, so that
2331 * mxser_close() knows when to free things. We restore it upon
2332 * exit, either normal or abnormal.
2335 add_wait_queue(&info
->open_wait
, &wait
);
2337 spin_lock_irqsave(&info
->slock
, flags
);
2338 if (!tty_hung_up_p(filp
))
2340 spin_unlock_irqrestore(&info
->slock
, flags
);
2341 info
->blocked_open
++;
2343 spin_lock_irqsave(&info
->slock
, flags
);
2344 outb(inb(info
->base
+ UART_MCR
) |
2345 UART_MCR_DTR
| UART_MCR_RTS
, info
->base
+ UART_MCR
);
2346 spin_unlock_irqrestore(&info
->slock
, flags
);
2347 set_current_state(TASK_INTERRUPTIBLE
);
2348 if (tty_hung_up_p(filp
) || !(info
->flags
& ASYNC_INITIALIZED
)) {
2349 if (info
->flags
& ASYNC_HUP_NOTIFY
)
2352 retval
= -ERESTARTSYS
;
2355 if (!(info
->flags
& ASYNC_CLOSING
) &&
2357 (inb(info
->base
+ UART_MSR
) & UART_MSR_DCD
)))
2359 if (signal_pending(current
)) {
2360 retval
= -ERESTARTSYS
;
2365 set_current_state(TASK_RUNNING
);
2366 remove_wait_queue(&info
->open_wait
, &wait
);
2367 if (!tty_hung_up_p(filp
))
2369 info
->blocked_open
--;
2372 info
->flags
|= ASYNC_NORMAL_ACTIVE
;
2376 static int mxser_startup(struct mxser_struct
*info
)
2379 unsigned long flags
;
2381 page
= __get_free_page(GFP_KERNEL
);
2385 spin_lock_irqsave(&info
->slock
, flags
);
2387 if (info
->flags
& ASYNC_INITIALIZED
) {
2389 spin_unlock_irqrestore(&info
->slock
, flags
);
2393 if (!info
->base
|| !info
->type
) {
2395 set_bit(TTY_IO_ERROR
, &info
->tty
->flags
);
2397 spin_unlock_irqrestore(&info
->slock
, flags
);
2403 info
->xmit_buf
= (unsigned char *) page
;
2406 * Clear the FIFO buffers and disable them
2407 * (they will be reenabled in mxser_change_speed())
2409 if (info
->IsMoxaMustChipFlag
)
2410 outb((UART_FCR_CLEAR_RCVR
|
2411 UART_FCR_CLEAR_XMIT
|
2412 MOXA_MUST_FCR_GDA_MODE_ENABLE
), info
->base
+ UART_FCR
);
2414 outb((UART_FCR_CLEAR_RCVR
| UART_FCR_CLEAR_XMIT
),
2415 info
->base
+ UART_FCR
);
2418 * At this point there's no way the LSR could still be 0xFF;
2419 * if it is, then bail out, because there's likely no UART
2422 if (inb(info
->base
+ UART_LSR
) == 0xff) {
2423 spin_unlock_irqrestore(&info
->slock
, flags
);
2424 if (capable(CAP_SYS_ADMIN
)) {
2426 set_bit(TTY_IO_ERROR
, &info
->tty
->flags
);
2433 * Clear the interrupt registers.
2435 (void) inb(info
->base
+ UART_LSR
);
2436 (void) inb(info
->base
+ UART_RX
);
2437 (void) inb(info
->base
+ UART_IIR
);
2438 (void) inb(info
->base
+ UART_MSR
);
2441 * Now, initialize the UART
2443 outb(UART_LCR_WLEN8
, info
->base
+ UART_LCR
); /* reset DLAB */
2444 info
->MCR
= UART_MCR_DTR
| UART_MCR_RTS
;
2445 outb(info
->MCR
, info
->base
+ UART_MCR
);
2448 * Finally, enable interrupts
2450 info
->IER
= UART_IER_MSI
| UART_IER_RLSI
| UART_IER_RDI
;
2451 /* info->IER = UART_IER_RLSI | UART_IER_RDI; */
2453 /* following add by Victor Yu. 08-30-2002 */
2454 if (info
->IsMoxaMustChipFlag
)
2455 info
->IER
|= MOXA_MUST_IER_EGDAI
;
2456 /* above add by Victor Yu. 08-30-2002 */
2457 outb(info
->IER
, info
->base
+ UART_IER
); /* enable interrupts */
2460 * And clear the interrupt registers again for luck.
2462 (void) inb(info
->base
+ UART_LSR
);
2463 (void) inb(info
->base
+ UART_RX
);
2464 (void) inb(info
->base
+ UART_IIR
);
2465 (void) inb(info
->base
+ UART_MSR
);
2468 clear_bit(TTY_IO_ERROR
, &info
->tty
->flags
);
2469 info
->xmit_cnt
= info
->xmit_head
= info
->xmit_tail
= 0;
2472 * and set the speed of the serial port
2474 spin_unlock_irqrestore(&info
->slock
, flags
);
2475 mxser_change_speed(info
, NULL
);
2477 info
->flags
|= ASYNC_INITIALIZED
;
2482 * This routine will shutdown a serial port; interrupts maybe disabled, and
2483 * DTR is dropped if the hangup on close termio flag is on.
2485 static void mxser_shutdown(struct mxser_struct
*info
)
2487 unsigned long flags
;
2489 if (!(info
->flags
& ASYNC_INITIALIZED
))
2492 spin_lock_irqsave(&info
->slock
, flags
);
2495 * clear delta_msr_wait queue to avoid mem leaks: we may free the irq
2496 * here so the queue might never be waken up
2498 wake_up_interruptible(&info
->delta_msr_wait
);
2501 * Free the IRQ, if necessary
2503 if (info
->xmit_buf
) {
2504 free_page((unsigned long) info
->xmit_buf
);
2505 info
->xmit_buf
= NULL
;
2509 outb(0x00, info
->base
+ UART_IER
);
2511 if (!info
->tty
|| (info
->tty
->termios
->c_cflag
& HUPCL
))
2512 info
->MCR
&= ~(UART_MCR_DTR
| UART_MCR_RTS
);
2513 outb(info
->MCR
, info
->base
+ UART_MCR
);
2515 /* clear Rx/Tx FIFO's */
2516 /* following add by Victor Yu. 08-30-2002 */
2517 if (info
->IsMoxaMustChipFlag
)
2518 outb((UART_FCR_CLEAR_RCVR
|
2519 UART_FCR_CLEAR_XMIT
|
2520 MOXA_MUST_FCR_GDA_MODE_ENABLE
), info
->base
+ UART_FCR
);
2522 /* above add by Victor Yu. 08-30-2002 */
2523 outb((UART_FCR_CLEAR_RCVR
| UART_FCR_CLEAR_XMIT
),
2524 info
->base
+ UART_FCR
);
2526 /* read data port to reset things */
2527 (void) inb(info
->base
+ UART_RX
);
2530 set_bit(TTY_IO_ERROR
, &info
->tty
->flags
);
2532 info
->flags
&= ~ASYNC_INITIALIZED
;
2534 /* following add by Victor Yu. 09-23-2002 */
2535 if (info
->IsMoxaMustChipFlag
)
2536 SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info
->base
);
2537 /* above add by Victor Yu. 09-23-2002 */
2539 spin_unlock_irqrestore(&info
->slock
, flags
);
2543 * This routine is called to set the UART divisor registers to match
2544 * the specified baud rate for a serial port.
2546 static int mxser_change_speed(struct mxser_struct
*info
, struct ktermios
*old_termios
)
2548 unsigned cflag
, cval
, fcr
;
2550 unsigned char status
;
2552 unsigned long flags
;
2554 if (!info
->tty
|| !info
->tty
->termios
)
2556 cflag
= info
->tty
->termios
->c_cflag
;
2561 #define B921600 (B460800 +1)
2563 if (mxser_set_baud_method
[info
->port
] == 0) {
2564 baud
= tty_get_baud_rate(info
->tty
);
2565 mxser_set_baud(info
, baud
);
2568 /* byte size and parity */
2569 switch (cflag
& CSIZE
) {
2584 break; /* too keep GCC shut... */
2589 cval
|= UART_LCR_PARITY
;
2590 if (!(cflag
& PARODD
))
2591 cval
|= UART_LCR_EPAR
;
2593 cval
|= UART_LCR_SPAR
;
2595 if ((info
->type
== PORT_8250
) || (info
->type
== PORT_16450
)) {
2596 if (info
->IsMoxaMustChipFlag
) {
2597 fcr
= UART_FCR_ENABLE_FIFO
;
2598 fcr
|= MOXA_MUST_FCR_GDA_MODE_ENABLE
;
2599 SET_MOXA_MUST_FIFO_VALUE(info
);
2603 fcr
= UART_FCR_ENABLE_FIFO
;
2604 /* following add by Victor Yu. 08-30-2002 */
2605 if (info
->IsMoxaMustChipFlag
) {
2606 fcr
|= MOXA_MUST_FCR_GDA_MODE_ENABLE
;
2607 SET_MOXA_MUST_FIFO_VALUE(info
);
2609 /* above add by Victor Yu. 08-30-2002 */
2610 switch (info
->rx_trigger
) {
2612 fcr
|= UART_FCR_TRIGGER_1
;
2615 fcr
|= UART_FCR_TRIGGER_4
;
2618 fcr
|= UART_FCR_TRIGGER_8
;
2621 fcr
|= UART_FCR_TRIGGER_14
;
2627 /* CTS flow control flag and modem status interrupts */
2628 info
->IER
&= ~UART_IER_MSI
;
2629 info
->MCR
&= ~UART_MCR_AFE
;
2630 if (cflag
& CRTSCTS
) {
2631 info
->flags
|= ASYNC_CTS_FLOW
;
2632 info
->IER
|= UART_IER_MSI
;
2633 if ((info
->type
== PORT_16550A
) || (info
->IsMoxaMustChipFlag
)) {
2634 info
->MCR
|= UART_MCR_AFE
;
2635 /* status = mxser_get_msr(info->base, 0, info->port); */
2639 status = inb(baseaddr + UART_MSR);
2640 restore_flags(flags);
2642 /* mxser_check_modem_status(info, status); */
2644 /* status = mxser_get_msr(info->base, 0, info->port); */
2645 /* MX_LOCK(&info->slock); */
2646 status
= inb(info
->base
+ UART_MSR
);
2647 /* MX_UNLOCK(&info->slock); */
2648 if (info
->tty
->hw_stopped
) {
2649 if (status
& UART_MSR_CTS
) {
2650 info
->tty
->hw_stopped
= 0;
2651 if ((info
->type
!= PORT_16550A
) &&
2652 (!info
->IsMoxaMustChipFlag
)) {
2653 info
->IER
|= UART_IER_THRI
;
2654 outb(info
->IER
, info
->base
+ UART_IER
);
2656 set_bit(MXSER_EVENT_TXLOW
, &info
->event
);
2657 schedule_work(&info
->tqueue
); }
2659 if (!(status
& UART_MSR_CTS
)) {
2660 info
->tty
->hw_stopped
= 1;
2661 if ((info
->type
!= PORT_16550A
) &&
2662 (!info
->IsMoxaMustChipFlag
)) {
2663 info
->IER
&= ~UART_IER_THRI
;
2664 outb(info
->IER
, info
->base
+ UART_IER
);
2670 info
->flags
&= ~ASYNC_CTS_FLOW
;
2672 outb(info
->MCR
, info
->base
+ UART_MCR
);
2673 if (cflag
& CLOCAL
) {
2674 info
->flags
&= ~ASYNC_CHECK_CD
;
2676 info
->flags
|= ASYNC_CHECK_CD
;
2677 info
->IER
|= UART_IER_MSI
;
2679 outb(info
->IER
, info
->base
+ UART_IER
);
2682 * Set up parity check flag
2684 info
->read_status_mask
= UART_LSR_OE
| UART_LSR_THRE
| UART_LSR_DR
;
2685 if (I_INPCK(info
->tty
))
2686 info
->read_status_mask
|= UART_LSR_FE
| UART_LSR_PE
;
2687 if (I_BRKINT(info
->tty
) || I_PARMRK(info
->tty
))
2688 info
->read_status_mask
|= UART_LSR_BI
;
2690 info
->ignore_status_mask
= 0;
2692 if (I_IGNBRK(info
->tty
)) {
2693 info
->ignore_status_mask
|= UART_LSR_BI
;
2694 info
->read_status_mask
|= UART_LSR_BI
;
2696 * If we're ignore parity and break indicators, ignore
2697 * overruns too. (For real raw support).
2699 if (I_IGNPAR(info
->tty
)) {
2700 info
->ignore_status_mask
|=
2704 info
->read_status_mask
|=
2710 /* following add by Victor Yu. 09-02-2002 */
2711 if (info
->IsMoxaMustChipFlag
) {
2712 spin_lock_irqsave(&info
->slock
, flags
);
2713 SET_MOXA_MUST_XON1_VALUE(info
->base
, START_CHAR(info
->tty
));
2714 SET_MOXA_MUST_XOFF1_VALUE(info
->base
, STOP_CHAR(info
->tty
));
2715 if (I_IXON(info
->tty
)) {
2716 ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info
->base
);
2718 DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info
->base
);
2720 if (I_IXOFF(info
->tty
)) {
2721 ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info
->base
);
2723 DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info
->base
);
2726 if ( I_IXANY(info->tty) ) {
2727 info->MCR |= MOXA_MUST_MCR_XON_ANY;
2728 ENABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->base);
2730 info->MCR &= ~MOXA_MUST_MCR_XON_ANY;
2731 DISABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->base);
2734 spin_unlock_irqrestore(&info
->slock
, flags
);
2736 /* above add by Victor Yu. 09-02-2002 */
2739 outb(fcr
, info
->base
+ UART_FCR
); /* set fcr */
2740 outb(cval
, info
->base
+ UART_LCR
);
2746 static int mxser_set_baud(struct mxser_struct
*info
, long newspd
)
2751 unsigned long flags
;
2753 if (!info
->tty
|| !info
->tty
->termios
)
2759 if (newspd
> info
->MaxCanSetBaudRate
)
2762 info
->realbaud
= newspd
;
2763 if (newspd
== 134) {
2764 quot
= (2 * info
->baud_base
/ 269);
2765 } else if (newspd
) {
2766 quot
= info
->baud_base
/ newspd
;
2773 info
->timeout
= ((info
->xmit_fifo_size
* HZ
* 10 * quot
) / info
->baud_base
);
2774 info
->timeout
+= HZ
/ 50; /* Add .02 seconds of slop */
2777 spin_lock_irqsave(&info
->slock
, flags
);
2778 info
->MCR
|= UART_MCR_DTR
;
2779 outb(info
->MCR
, info
->base
+ UART_MCR
);
2780 spin_unlock_irqrestore(&info
->slock
, flags
);
2782 spin_lock_irqsave(&info
->slock
, flags
);
2783 info
->MCR
&= ~UART_MCR_DTR
;
2784 outb(info
->MCR
, info
->base
+ UART_MCR
);
2785 spin_unlock_irqrestore(&info
->slock
, flags
);
2789 cval
= inb(info
->base
+ UART_LCR
);
2791 outb(cval
| UART_LCR_DLAB
, info
->base
+ UART_LCR
); /* set DLAB */
2793 outb(quot
& 0xff, info
->base
+ UART_DLL
); /* LS of divisor */
2794 outb(quot
>> 8, info
->base
+ UART_DLM
); /* MS of divisor */
2795 outb(cval
, info
->base
+ UART_LCR
); /* reset DLAB */
2802 * ------------------------------------------------------------
2803 * friends of mxser_ioctl()
2804 * ------------------------------------------------------------
2806 static int mxser_get_serial_info(struct mxser_struct
*info
, struct serial_struct __user
*retinfo
)
2808 struct serial_struct tmp
;
2812 memset(&tmp
, 0, sizeof(tmp
));
2813 tmp
.type
= info
->type
;
2814 tmp
.line
= info
->port
;
2815 tmp
.port
= info
->base
;
2816 tmp
.irq
= info
->irq
;
2817 tmp
.flags
= info
->flags
;
2818 tmp
.baud_base
= info
->baud_base
;
2819 tmp
.close_delay
= info
->close_delay
;
2820 tmp
.closing_wait
= info
->closing_wait
;
2821 tmp
.custom_divisor
= info
->custom_divisor
;
2823 if (copy_to_user(retinfo
, &tmp
, sizeof(*retinfo
)))
2828 static int mxser_set_serial_info(struct mxser_struct
*info
, struct serial_struct __user
*new_info
)
2830 struct serial_struct new_serial
;
2834 if (!new_info
|| !info
->base
)
2836 if (copy_from_user(&new_serial
, new_info
, sizeof(new_serial
)))
2839 if ((new_serial
.irq
!= info
->irq
) ||
2840 (new_serial
.port
!= info
->base
) ||
2841 (new_serial
.custom_divisor
!= info
->custom_divisor
) ||
2842 (new_serial
.baud_base
!= info
->baud_base
))
2845 flags
= info
->flags
& ASYNC_SPD_MASK
;
2847 if (!capable(CAP_SYS_ADMIN
)) {
2848 if ((new_serial
.baud_base
!= info
->baud_base
) ||
2849 (new_serial
.close_delay
!= info
->close_delay
) ||
2850 ((new_serial
.flags
& ~ASYNC_USR_MASK
) != (info
->flags
& ~ASYNC_USR_MASK
)))
2852 info
->flags
= ((info
->flags
& ~ASYNC_USR_MASK
) |
2853 (new_serial
.flags
& ASYNC_USR_MASK
));
2856 * OK, past this point, all the error checking has been done.
2857 * At this point, we start making changes.....
2859 info
->flags
= ((info
->flags
& ~ASYNC_FLAGS
) |
2860 (new_serial
.flags
& ASYNC_FLAGS
));
2861 info
->close_delay
= new_serial
.close_delay
* HZ
/ 100;
2862 info
->closing_wait
= new_serial
.closing_wait
* HZ
/ 100;
2863 info
->tty
->low_latency
=
2864 (info
->flags
& ASYNC_LOW_LATENCY
) ? 1 : 0;
2865 info
->tty
->low_latency
= 0; /* (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; */
2868 /* added by casper, 3/17/2000, for mouse */
2869 info
->type
= new_serial
.type
;
2871 process_txrx_fifo(info
);
2873 if (info
->flags
& ASYNC_INITIALIZED
) {
2874 if (flags
!= (info
->flags
& ASYNC_SPD_MASK
)) {
2875 mxser_change_speed(info
, NULL
);
2878 retval
= mxser_startup(info
);
2884 * mxser_get_lsr_info - get line status register info
2886 * Purpose: Let user call ioctl() to get info when the UART physically
2887 * is emptied. On bus types like RS485, the transmitter must
2888 * release the bus after transmitting. This must be done when
2889 * the transmit shift register is empty, not be done when the
2890 * transmit holding register is empty. This functionality
2891 * allows an RS485 driver to be written in user space.
2893 static int mxser_get_lsr_info(struct mxser_struct
*info
, unsigned int __user
*value
)
2895 unsigned char status
;
2896 unsigned int result
;
2897 unsigned long flags
;
2899 spin_lock_irqsave(&info
->slock
, flags
);
2900 status
= inb(info
->base
+ UART_LSR
);
2901 spin_unlock_irqrestore(&info
->slock
, flags
);
2902 result
= ((status
& UART_LSR_TEMT
) ? TIOCSER_TEMT
: 0);
2903 return put_user(result
, value
);
2907 * This routine sends a break character out the serial port.
2909 static void mxser_send_break(struct mxser_struct
*info
, int duration
)
2911 unsigned long flags
;
2915 set_current_state(TASK_INTERRUPTIBLE
);
2916 spin_lock_irqsave(&info
->slock
, flags
);
2917 outb(inb(info
->base
+ UART_LCR
) | UART_LCR_SBC
,
2918 info
->base
+ UART_LCR
);
2919 spin_unlock_irqrestore(&info
->slock
, flags
);
2920 schedule_timeout(duration
);
2921 spin_lock_irqsave(&info
->slock
, flags
);
2922 outb(inb(info
->base
+ UART_LCR
) & ~UART_LCR_SBC
,
2923 info
->base
+ UART_LCR
);
2924 spin_unlock_irqrestore(&info
->slock
, flags
);
2927 static int mxser_tiocmget(struct tty_struct
*tty
, struct file
*file
)
2929 struct mxser_struct
*info
= tty
->driver_data
;
2930 unsigned char control
, status
;
2931 unsigned long flags
;
2934 if (tty
->index
== MXSER_PORTS
)
2935 return -ENOIOCTLCMD
;
2936 if (tty
->flags
& (1 << TTY_IO_ERROR
))
2939 control
= info
->MCR
;
2941 spin_lock_irqsave(&info
->slock
, flags
);
2942 status
= inb(info
->base
+ UART_MSR
);
2943 if (status
& UART_MSR_ANY_DELTA
)
2944 mxser_check_modem_status(info
, status
);
2945 spin_unlock_irqrestore(&info
->slock
, flags
);
2946 return ((control
& UART_MCR_RTS
) ? TIOCM_RTS
: 0) |
2947 ((control
& UART_MCR_DTR
) ? TIOCM_DTR
: 0) |
2948 ((status
& UART_MSR_DCD
) ? TIOCM_CAR
: 0) |
2949 ((status
& UART_MSR_RI
) ? TIOCM_RNG
: 0) |
2950 ((status
& UART_MSR_DSR
) ? TIOCM_DSR
: 0) |
2951 ((status
& UART_MSR_CTS
) ? TIOCM_CTS
: 0);
2954 static int mxser_tiocmset(struct tty_struct
*tty
, struct file
*file
, unsigned int set
, unsigned int clear
)
2956 struct mxser_struct
*info
= tty
->driver_data
;
2957 unsigned long flags
;
2960 if (tty
->index
== MXSER_PORTS
)
2961 return -ENOIOCTLCMD
;
2962 if (tty
->flags
& (1 << TTY_IO_ERROR
))
2965 spin_lock_irqsave(&info
->slock
, flags
);
2967 if (set
& TIOCM_RTS
)
2968 info
->MCR
|= UART_MCR_RTS
;
2969 if (set
& TIOCM_DTR
)
2970 info
->MCR
|= UART_MCR_DTR
;
2972 if (clear
& TIOCM_RTS
)
2973 info
->MCR
&= ~UART_MCR_RTS
;
2974 if (clear
& TIOCM_DTR
)
2975 info
->MCR
&= ~UART_MCR_DTR
;
2977 outb(info
->MCR
, info
->base
+ UART_MCR
);
2978 spin_unlock_irqrestore(&info
->slock
, flags
);
2983 static int mxser_read_register(int, unsigned short *);
2984 static int mxser_program_mode(int);
2985 static void mxser_normal_mode(int);
2987 static int mxser_get_ISA_conf(int cap
, struct mxser_hwconf
*hwconf
)
2990 unsigned short regs
[16], irq
;
2991 unsigned char scratch
, scratch2
;
2993 hwconf
->IsMoxaMustChipFlag
= MOXA_OTHER_UART
;
2995 id
= mxser_read_register(cap
, regs
);
2996 if (id
== C168_ASIC_ID
) {
2997 hwconf
->board_type
= MXSER_BOARD_C168_ISA
;
2999 } else if (id
== C104_ASIC_ID
) {
3000 hwconf
->board_type
= MXSER_BOARD_C104_ISA
;
3002 } else if (id
== C102_ASIC_ID
) {
3003 hwconf
->board_type
= MXSER_BOARD_C102_ISA
;
3005 } else if (id
== CI132_ASIC_ID
) {
3006 hwconf
->board_type
= MXSER_BOARD_CI132
;
3008 } else if (id
== CI134_ASIC_ID
) {
3009 hwconf
->board_type
= MXSER_BOARD_CI134
;
3011 } else if (id
== CI104J_ASIC_ID
) {
3012 hwconf
->board_type
= MXSER_BOARD_CI104J
;
3018 if (hwconf
->ports
== 2) {
3019 irq
= regs
[9] & 0xF000;
3020 irq
= irq
| (irq
>> 4);
3021 if (irq
!= (regs
[9] & 0xFF00))
3022 return MXSER_ERR_IRQ_CONFLIT
;
3023 } else if (hwconf
->ports
== 4) {
3024 irq
= regs
[9] & 0xF000;
3025 irq
= irq
| (irq
>> 4);
3026 irq
= irq
| (irq
>> 8);
3028 return MXSER_ERR_IRQ_CONFLIT
;
3029 } else if (hwconf
->ports
== 8) {
3030 irq
= regs
[9] & 0xF000;
3031 irq
= irq
| (irq
>> 4);
3032 irq
= irq
| (irq
>> 8);
3033 if ((irq
!= regs
[9]) || (irq
!= regs
[10]))
3034 return MXSER_ERR_IRQ_CONFLIT
;
3038 return MXSER_ERR_IRQ
;
3039 hwconf
->irq
= ((int)(irq
& 0xF000) >> 12);
3040 for (i
= 0; i
< 8; i
++)
3041 hwconf
->ioaddr
[i
] = (int) regs
[i
+ 1] & 0xFFF8;
3042 if ((regs
[12] & 0x80) == 0)
3043 return MXSER_ERR_VECTOR
;
3044 hwconf
->vector
= (int)regs
[11]; /* interrupt vector */
3046 hwconf
->vector_mask
= 0x00FF;
3048 hwconf
->vector_mask
= 0x000F;
3049 for (i
= 7, bits
= 0x0100; i
>= 0; i
--, bits
<<= 1) {
3050 if (regs
[12] & bits
) {
3051 hwconf
->baud_base
[i
] = 921600;
3052 hwconf
->MaxCanSetBaudRate
[i
] = 921600; /* add by Victor Yu. 09-04-2002 */
3054 hwconf
->baud_base
[i
] = 115200;
3055 hwconf
->MaxCanSetBaudRate
[i
] = 115200; /* add by Victor Yu. 09-04-2002 */
3058 scratch2
= inb(cap
+ UART_LCR
) & (~UART_LCR_DLAB
);
3059 outb(scratch2
| UART_LCR_DLAB
, cap
+ UART_LCR
);
3060 outb(0, cap
+ UART_EFR
); /* EFR is the same as FCR */
3061 outb(scratch2
, cap
+ UART_LCR
);
3062 outb(UART_FCR_ENABLE_FIFO
, cap
+ UART_FCR
);
3063 scratch
= inb(cap
+ UART_IIR
);
3066 hwconf
->uart_type
= PORT_16550A
;
3068 hwconf
->uart_type
= PORT_16450
;
3073 request_region(hwconf
->ioaddr
[0], 8 * hwconf
->ports
, "mxser(IO)");
3074 request_region(hwconf
->vector
, 1, "mxser(vector)");
3075 return hwconf
->ports
;
3078 #define CHIP_SK 0x01 /* Serial Data Clock in Eprom */
3079 #define CHIP_DO 0x02 /* Serial Data Output in Eprom */
3080 #define CHIP_CS 0x04 /* Serial Chip Select in Eprom */
3081 #define CHIP_DI 0x08 /* Serial Data Input in Eprom */
3082 #define EN_CCMD 0x000 /* Chip's command register */
3083 #define EN0_RSARLO 0x008 /* Remote start address reg 0 */
3084 #define EN0_RSARHI 0x009 /* Remote start address reg 1 */
3085 #define EN0_RCNTLO 0x00A /* Remote byte count reg WR */
3086 #define EN0_RCNTHI 0x00B /* Remote byte count reg WR */
3087 #define EN0_DCFG 0x00E /* Data configuration reg WR */
3088 #define EN0_PORT 0x010 /* Rcv missed frame error counter RD */
3089 #define ENC_PAGE0 0x000 /* Select page 0 of chip registers */
3090 #define ENC_PAGE3 0x0C0 /* Select page 3 of chip registers */
3091 static int mxser_read_register(int port
, unsigned short *regs
)
3093 int i
, k
, value
, id
;
3096 id
= mxser_program_mode(port
);
3099 for (i
= 0; i
< 14; i
++) {
3100 k
= (i
& 0x3F) | 0x180;
3101 for (j
= 0x100; j
> 0; j
>>= 1) {
3102 outb(CHIP_CS
, port
);
3104 outb(CHIP_CS
| CHIP_DO
, port
);
3105 outb(CHIP_CS
| CHIP_DO
| CHIP_SK
, port
); /* A? bit of read */
3107 outb(CHIP_CS
, port
);
3108 outb(CHIP_CS
| CHIP_SK
, port
); /* A? bit of read */
3113 for (k
= 0, j
= 0x8000; k
< 16; k
++, j
>>= 1) {
3114 outb(CHIP_CS
, port
);
3115 outb(CHIP_CS
| CHIP_SK
, port
);
3116 if (inb(port
) & CHIP_DI
)
3122 mxser_normal_mode(port
);
3126 static int mxser_program_mode(int port
)
3129 /* unsigned long flags; */
3131 spin_lock(&gm_lock
);
3139 /* restore_flags(flags); */
3140 spin_unlock(&gm_lock
);
3142 id
= inb(port
+ 1) & 0x1F;
3143 if ((id
!= C168_ASIC_ID
) &&
3144 (id
!= C104_ASIC_ID
) &&
3145 (id
!= C102_ASIC_ID
) &&
3146 (id
!= CI132_ASIC_ID
) &&
3147 (id
!= CI134_ASIC_ID
) &&
3148 (id
!= CI104J_ASIC_ID
))
3150 for (i
= 0, j
= 0; i
< 4; i
++) {
3154 } else if ((j
== 1) && (n
== 1)) {
3165 static void mxser_normal_mode(int port
)
3169 outb(0xA5, port
+ 1);
3170 outb(0x80, port
+ 3);
3171 outb(12, port
+ 0); /* 9600 bps */
3173 outb(0x03, port
+ 3); /* 8 data bits */
3174 outb(0x13, port
+ 4); /* loop back mode */
3175 for (i
= 0; i
< 16; i
++) {
3177 if ((n
& 0x61) == 0x60)
3182 outb(0x00, port
+ 4);
3185 module_init(mxser_module_init
);
3186 module_exit(mxser_module_exit
);