1 /*****************************************************************************/
4 * stallion.c -- stallion multiport serial driver.
6 * Copyright (C) 1996-1999 Stallion Technologies
7 * Copyright (C) 1994-1996 Greg Ungerer.
9 * This code is loosely based on the Linux serial driver, written by
10 * Linus Torvalds, Theodore T'so and others.
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 /*****************************************************************************/
29 #include <linux/module.h>
30 #include <linux/sched.h>
31 #include <linux/slab.h>
32 #include <linux/interrupt.h>
33 #include <linux/tty.h>
34 #include <linux/tty_flip.h>
35 #include <linux/serial.h>
36 #include <linux/seq_file.h>
37 #include <linux/cd1400.h>
38 #include <linux/sc26198.h>
39 #include <linux/comstats.h>
40 #include <linux/stallion.h>
41 #include <linux/ioport.h>
42 #include <linux/init.h>
43 #include <linux/smp_lock.h>
44 #include <linux/device.h>
45 #include <linux/delay.h>
46 #include <linux/ctype.h>
49 #include <asm/uaccess.h>
51 #include <linux/pci.h>
53 /*****************************************************************************/
56 * Define different board types. Use the standard Stallion "assigned"
57 * board numbers. Boards supported in this driver are abbreviated as
58 * EIO = EasyIO and ECH = EasyConnection 8/32.
64 #define BRD_ECH64PCI 27
65 #define BRD_EASYIOPCI 28
71 unsigned long memaddr
;
76 static unsigned int stl_nrbrds
;
78 /*****************************************************************************/
81 * Define some important driver characteristics. Device major numbers
82 * allocated as per Linux Device Registry.
84 #ifndef STL_SIOMEMMAJOR
85 #define STL_SIOMEMMAJOR 28
87 #ifndef STL_SERIALMAJOR
88 #define STL_SERIALMAJOR 24
90 #ifndef STL_CALLOUTMAJOR
91 #define STL_CALLOUTMAJOR 25
95 * Set the TX buffer size. Bigger is better, but we don't want
96 * to chew too much memory with buffers!
98 #define STL_TXBUFLOW 512
99 #define STL_TXBUFSIZE 4096
101 /*****************************************************************************/
104 * Define our local driver identity first. Set up stuff to deal with
105 * all the local structures required by a serial tty driver.
107 static char *stl_drvtitle
= "Stallion Multiport Serial Driver";
108 static char *stl_drvname
= "stallion";
109 static char *stl_drvversion
= "5.6.0";
111 static struct tty_driver
*stl_serial
;
114 * Define a local default termios struct. All ports will be created
115 * with this termios initially. Basically all it defines is a raw port
116 * at 9600, 8 data bits, 1 stop bit.
118 static struct ktermios stl_deftermios
= {
119 .c_cflag
= (B9600
| CS8
| CREAD
| HUPCL
| CLOCAL
),
126 * Define global place to put buffer overflow characters.
128 static char stl_unwanted
[SC26198_RXFIFOSIZE
];
130 /*****************************************************************************/
132 static DEFINE_MUTEX(stl_brdslock
);
133 static struct stlbrd
*stl_brds
[STL_MAXBRDS
];
135 static const struct tty_port_operations stl_port_ops
;
138 * Per board state flags. Used with the state field of the board struct.
139 * Not really much here!
141 #define BRD_FOUND 0x1
142 #define STL_PROBED 0x2
146 * Define the port structure istate flags. These set of flags are
147 * modified at interrupt time - so setting and reseting them needs
148 * to be atomic. Use the bit clear/setting routines for this.
150 #define ASYI_TXBUSY 1
152 #define ASYI_TXFLOWED 3
155 * Define an array of board names as printable strings. Handy for
156 * referencing boards when printing trace and stuff.
158 static char *stl_brdnames
[] = {
190 /*****************************************************************************/
193 * Define some string labels for arguments passed from the module
194 * load line. These allow for easy board definitions, and easy
195 * modification of the io, memory and irq resoucres.
197 static unsigned int stl_nargs
;
198 static char *board0
[4];
199 static char *board1
[4];
200 static char *board2
[4];
201 static char *board3
[4];
203 static char **stl_brdsp
[] = {
211 * Define a set of common board names, and types. This is used to
212 * parse any module arguments.
219 { "easyio", BRD_EASYIO
},
220 { "eio", BRD_EASYIO
},
221 { "20", BRD_EASYIO
},
222 { "ec8/32", BRD_ECH
},
223 { "ec8/32-at", BRD_ECH
},
224 { "ec8/32-isa", BRD_ECH
},
226 { "echat", BRD_ECH
},
228 { "ec8/32-mc", BRD_ECHMC
},
229 { "ec8/32-mca", BRD_ECHMC
},
230 { "echmc", BRD_ECHMC
},
231 { "echmca", BRD_ECHMC
},
233 { "ec8/32-pc", BRD_ECHPCI
},
234 { "ec8/32-pci", BRD_ECHPCI
},
235 { "26", BRD_ECHPCI
},
236 { "ec8/64-pc", BRD_ECH64PCI
},
237 { "ec8/64-pci", BRD_ECH64PCI
},
238 { "ech-pci", BRD_ECH64PCI
},
239 { "echpci", BRD_ECH64PCI
},
240 { "echpc", BRD_ECH64PCI
},
241 { "27", BRD_ECH64PCI
},
242 { "easyio-pc", BRD_EASYIOPCI
},
243 { "easyio-pci", BRD_EASYIOPCI
},
244 { "eio-pci", BRD_EASYIOPCI
},
245 { "eiopci", BRD_EASYIOPCI
},
246 { "28", BRD_EASYIOPCI
},
250 * Define the module agruments.
253 module_param_array(board0
, charp
, &stl_nargs
, 0);
254 MODULE_PARM_DESC(board0
, "Board 0 config -> name[,ioaddr[,ioaddr2][,irq]]");
255 module_param_array(board1
, charp
, &stl_nargs
, 0);
256 MODULE_PARM_DESC(board1
, "Board 1 config -> name[,ioaddr[,ioaddr2][,irq]]");
257 module_param_array(board2
, charp
, &stl_nargs
, 0);
258 MODULE_PARM_DESC(board2
, "Board 2 config -> name[,ioaddr[,ioaddr2][,irq]]");
259 module_param_array(board3
, charp
, &stl_nargs
, 0);
260 MODULE_PARM_DESC(board3
, "Board 3 config -> name[,ioaddr[,ioaddr2][,irq]]");
262 /*****************************************************************************/
265 * Hardware ID bits for the EasyIO and ECH boards. These defines apply
266 * to the directly accessible io ports of these boards (not the uarts -
267 * they are in cd1400.h and sc26198.h).
269 #define EIO_8PORTRS 0x04
270 #define EIO_4PORTRS 0x05
271 #define EIO_8PORTDI 0x00
272 #define EIO_8PORTM 0x06
274 #define EIO_IDBITMASK 0x07
276 #define EIO_BRDMASK 0xf0
279 #define ID_BRD16 0x30
281 #define EIO_INTRPEND 0x08
282 #define EIO_INTEDGE 0x00
283 #define EIO_INTLEVEL 0x08
287 #define ECH_IDBITMASK 0xe0
288 #define ECH_BRDENABLE 0x08
289 #define ECH_BRDDISABLE 0x00
290 #define ECH_INTENABLE 0x01
291 #define ECH_INTDISABLE 0x00
292 #define ECH_INTLEVEL 0x02
293 #define ECH_INTEDGE 0x00
294 #define ECH_INTRPEND 0x01
295 #define ECH_BRDRESET 0x01
297 #define ECHMC_INTENABLE 0x01
298 #define ECHMC_BRDRESET 0x02
300 #define ECH_PNLSTATUS 2
301 #define ECH_PNL16PORT 0x20
302 #define ECH_PNLIDMASK 0x07
303 #define ECH_PNLXPID 0x40
304 #define ECH_PNLINTRPEND 0x80
306 #define ECH_ADDR2MASK 0x1e0
309 * Define the vector mapping bits for the programmable interrupt board
310 * hardware. These bits encode the interrupt for the board to use - it
311 * is software selectable (except the EIO-8M).
313 static unsigned char stl_vecmap
[] = {
314 0xff, 0xff, 0xff, 0x04, 0x06, 0x05, 0xff, 0x07,
315 0xff, 0xff, 0x00, 0x02, 0x01, 0xff, 0xff, 0x03
319 * Lock ordering is that you may not take stallion_lock holding
323 static spinlock_t brd_lock
; /* Guard the board mapping */
324 static spinlock_t stallion_lock
; /* Guard the tty driver */
327 * Set up enable and disable macros for the ECH boards. They require
328 * the secondary io address space to be activated and deactivated.
329 * This way all ECH boards can share their secondary io region.
330 * If this is an ECH-PCI board then also need to set the page pointer
331 * to point to the correct page.
333 #define BRDENABLE(brdnr,pagenr) \
334 if (stl_brds[(brdnr)]->brdtype == BRD_ECH) \
335 outb((stl_brds[(brdnr)]->ioctrlval | ECH_BRDENABLE), \
336 stl_brds[(brdnr)]->ioctrl); \
337 else if (stl_brds[(brdnr)]->brdtype == BRD_ECHPCI) \
338 outb((pagenr), stl_brds[(brdnr)]->ioctrl);
340 #define BRDDISABLE(brdnr) \
341 if (stl_brds[(brdnr)]->brdtype == BRD_ECH) \
342 outb((stl_brds[(brdnr)]->ioctrlval | ECH_BRDDISABLE), \
343 stl_brds[(brdnr)]->ioctrl);
345 #define STL_CD1400MAXBAUD 230400
346 #define STL_SC26198MAXBAUD 460800
348 #define STL_BAUDBASE 115200
349 #define STL_CLOSEDELAY (5 * HZ / 10)
351 /*****************************************************************************/
354 * Define the Stallion PCI vendor and device IDs.
356 #ifndef PCI_VENDOR_ID_STALLION
357 #define PCI_VENDOR_ID_STALLION 0x124d
359 #ifndef PCI_DEVICE_ID_ECHPCI832
360 #define PCI_DEVICE_ID_ECHPCI832 0x0000
362 #ifndef PCI_DEVICE_ID_ECHPCI864
363 #define PCI_DEVICE_ID_ECHPCI864 0x0002
365 #ifndef PCI_DEVICE_ID_EIOPCI
366 #define PCI_DEVICE_ID_EIOPCI 0x0003
370 * Define structure to hold all Stallion PCI boards.
373 static struct pci_device_id stl_pcibrds
[] = {
374 { PCI_DEVICE(PCI_VENDOR_ID_STALLION
, PCI_DEVICE_ID_ECHPCI864
),
375 .driver_data
= BRD_ECH64PCI
},
376 { PCI_DEVICE(PCI_VENDOR_ID_STALLION
, PCI_DEVICE_ID_EIOPCI
),
377 .driver_data
= BRD_EASYIOPCI
},
378 { PCI_DEVICE(PCI_VENDOR_ID_STALLION
, PCI_DEVICE_ID_ECHPCI832
),
379 .driver_data
= BRD_ECHPCI
},
380 { PCI_DEVICE(PCI_VENDOR_ID_NS
, PCI_DEVICE_ID_NS_87410
),
381 .driver_data
= BRD_ECHPCI
},
384 MODULE_DEVICE_TABLE(pci
, stl_pcibrds
);
386 /*****************************************************************************/
389 * Define macros to extract a brd/port number from a minor number.
391 #define MINOR2BRD(min) (((min) & 0xc0) >> 6)
392 #define MINOR2PORT(min) ((min) & 0x3f)
395 * Define a baud rate table that converts termios baud rate selector
396 * into the actual baud rate value. All baud rate calculations are
397 * based on the actual baud rate required.
399 static unsigned int stl_baudrates
[] = {
400 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
401 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600
404 /*****************************************************************************/
407 * Declare all those functions in this driver!
410 static long stl_memioctl(struct file
*fp
, unsigned int cmd
, unsigned long arg
);
411 static int stl_brdinit(struct stlbrd
*brdp
);
412 static int stl_getportstats(struct tty_struct
*tty
, struct stlport
*portp
, comstats_t __user
*cp
);
413 static int stl_clrportstats(struct stlport
*portp
, comstats_t __user
*cp
);
416 * CD1400 uart specific handling functions.
418 static void stl_cd1400setreg(struct stlport
*portp
, int regnr
, int value
);
419 static int stl_cd1400getreg(struct stlport
*portp
, int regnr
);
420 static int stl_cd1400updatereg(struct stlport
*portp
, int regnr
, int value
);
421 static int stl_cd1400panelinit(struct stlbrd
*brdp
, struct stlpanel
*panelp
);
422 static void stl_cd1400portinit(struct stlbrd
*brdp
, struct stlpanel
*panelp
, struct stlport
*portp
);
423 static void stl_cd1400setport(struct stlport
*portp
, struct ktermios
*tiosp
);
424 static int stl_cd1400getsignals(struct stlport
*portp
);
425 static void stl_cd1400setsignals(struct stlport
*portp
, int dtr
, int rts
);
426 static void stl_cd1400ccrwait(struct stlport
*portp
);
427 static void stl_cd1400enablerxtx(struct stlport
*portp
, int rx
, int tx
);
428 static void stl_cd1400startrxtx(struct stlport
*portp
, int rx
, int tx
);
429 static void stl_cd1400disableintrs(struct stlport
*portp
);
430 static void stl_cd1400sendbreak(struct stlport
*portp
, int len
);
431 static void stl_cd1400flowctrl(struct stlport
*portp
, int state
);
432 static void stl_cd1400sendflow(struct stlport
*portp
, int state
);
433 static void stl_cd1400flush(struct stlport
*portp
);
434 static int stl_cd1400datastate(struct stlport
*portp
);
435 static void stl_cd1400eiointr(struct stlpanel
*panelp
, unsigned int iobase
);
436 static void stl_cd1400echintr(struct stlpanel
*panelp
, unsigned int iobase
);
437 static void stl_cd1400txisr(struct stlpanel
*panelp
, int ioaddr
);
438 static void stl_cd1400rxisr(struct stlpanel
*panelp
, int ioaddr
);
439 static void stl_cd1400mdmisr(struct stlpanel
*panelp
, int ioaddr
);
441 static inline int stl_cd1400breakisr(struct stlport
*portp
, int ioaddr
);
444 * SC26198 uart specific handling functions.
446 static void stl_sc26198setreg(struct stlport
*portp
, int regnr
, int value
);
447 static int stl_sc26198getreg(struct stlport
*portp
, int regnr
);
448 static int stl_sc26198updatereg(struct stlport
*portp
, int regnr
, int value
);
449 static int stl_sc26198getglobreg(struct stlport
*portp
, int regnr
);
450 static int stl_sc26198panelinit(struct stlbrd
*brdp
, struct stlpanel
*panelp
);
451 static void stl_sc26198portinit(struct stlbrd
*brdp
, struct stlpanel
*panelp
, struct stlport
*portp
);
452 static void stl_sc26198setport(struct stlport
*portp
, struct ktermios
*tiosp
);
453 static int stl_sc26198getsignals(struct stlport
*portp
);
454 static void stl_sc26198setsignals(struct stlport
*portp
, int dtr
, int rts
);
455 static void stl_sc26198enablerxtx(struct stlport
*portp
, int rx
, int tx
);
456 static void stl_sc26198startrxtx(struct stlport
*portp
, int rx
, int tx
);
457 static void stl_sc26198disableintrs(struct stlport
*portp
);
458 static void stl_sc26198sendbreak(struct stlport
*portp
, int len
);
459 static void stl_sc26198flowctrl(struct stlport
*portp
, int state
);
460 static void stl_sc26198sendflow(struct stlport
*portp
, int state
);
461 static void stl_sc26198flush(struct stlport
*portp
);
462 static int stl_sc26198datastate(struct stlport
*portp
);
463 static void stl_sc26198wait(struct stlport
*portp
);
464 static void stl_sc26198txunflow(struct stlport
*portp
, struct tty_struct
*tty
);
465 static void stl_sc26198intr(struct stlpanel
*panelp
, unsigned int iobase
);
466 static void stl_sc26198txisr(struct stlport
*port
);
467 static void stl_sc26198rxisr(struct stlport
*port
, unsigned int iack
);
468 static void stl_sc26198rxbadch(struct stlport
*portp
, unsigned char status
, char ch
);
469 static void stl_sc26198rxbadchars(struct stlport
*portp
);
470 static void stl_sc26198otherisr(struct stlport
*port
, unsigned int iack
);
472 /*****************************************************************************/
475 * Generic UART support structure.
477 typedef struct uart
{
478 int (*panelinit
)(struct stlbrd
*brdp
, struct stlpanel
*panelp
);
479 void (*portinit
)(struct stlbrd
*brdp
, struct stlpanel
*panelp
, struct stlport
*portp
);
480 void (*setport
)(struct stlport
*portp
, struct ktermios
*tiosp
);
481 int (*getsignals
)(struct stlport
*portp
);
482 void (*setsignals
)(struct stlport
*portp
, int dtr
, int rts
);
483 void (*enablerxtx
)(struct stlport
*portp
, int rx
, int tx
);
484 void (*startrxtx
)(struct stlport
*portp
, int rx
, int tx
);
485 void (*disableintrs
)(struct stlport
*portp
);
486 void (*sendbreak
)(struct stlport
*portp
, int len
);
487 void (*flowctrl
)(struct stlport
*portp
, int state
);
488 void (*sendflow
)(struct stlport
*portp
, int state
);
489 void (*flush
)(struct stlport
*portp
);
490 int (*datastate
)(struct stlport
*portp
);
491 void (*intr
)(struct stlpanel
*panelp
, unsigned int iobase
);
495 * Define some macros to make calling these functions nice and clean.
497 #define stl_panelinit (* ((uart_t *) panelp->uartp)->panelinit)
498 #define stl_portinit (* ((uart_t *) portp->uartp)->portinit)
499 #define stl_setport (* ((uart_t *) portp->uartp)->setport)
500 #define stl_getsignals (* ((uart_t *) portp->uartp)->getsignals)
501 #define stl_setsignals (* ((uart_t *) portp->uartp)->setsignals)
502 #define stl_enablerxtx (* ((uart_t *) portp->uartp)->enablerxtx)
503 #define stl_startrxtx (* ((uart_t *) portp->uartp)->startrxtx)
504 #define stl_disableintrs (* ((uart_t *) portp->uartp)->disableintrs)
505 #define stl_sendbreak (* ((uart_t *) portp->uartp)->sendbreak)
506 #define stl_flowctrl (* ((uart_t *) portp->uartp)->flowctrl)
507 #define stl_sendflow (* ((uart_t *) portp->uartp)->sendflow)
508 #define stl_flush (* ((uart_t *) portp->uartp)->flush)
509 #define stl_datastate (* ((uart_t *) portp->uartp)->datastate)
511 /*****************************************************************************/
514 * CD1400 UART specific data initialization.
516 static uart_t stl_cd1400uart
= {
520 stl_cd1400getsignals
,
521 stl_cd1400setsignals
,
522 stl_cd1400enablerxtx
,
524 stl_cd1400disableintrs
,
534 * Define the offsets within the register bank of a cd1400 based panel.
535 * These io address offsets are common to the EasyIO board as well.
543 #define EREG_BANKSIZE 8
545 #define CD1400_CLK 25000000
546 #define CD1400_CLK8M 20000000
549 * Define the cd1400 baud rate clocks. These are used when calculating
550 * what clock and divisor to use for the required baud rate. Also
551 * define the maximum baud rate allowed, and the default base baud.
553 static int stl_cd1400clkdivs
[] = {
554 CD1400_CLK0
, CD1400_CLK1
, CD1400_CLK2
, CD1400_CLK3
, CD1400_CLK4
557 /*****************************************************************************/
560 * SC26198 UART specific data initization.
562 static uart_t stl_sc26198uart
= {
563 stl_sc26198panelinit
,
566 stl_sc26198getsignals
,
567 stl_sc26198setsignals
,
568 stl_sc26198enablerxtx
,
569 stl_sc26198startrxtx
,
570 stl_sc26198disableintrs
,
571 stl_sc26198sendbreak
,
575 stl_sc26198datastate
,
580 * Define the offsets within the register bank of a sc26198 based panel.
588 #define XP_BANKSIZE 4
591 * Define the sc26198 baud rate table. Offsets within the table
592 * represent the actual baud rate selector of sc26198 registers.
594 static unsigned int sc26198_baudtable
[] = {
595 50, 75, 150, 200, 300, 450, 600, 900, 1200, 1800, 2400, 3600,
596 4800, 7200, 9600, 14400, 19200, 28800, 38400, 57600, 115200,
597 230400, 460800, 921600
600 #define SC26198_NRBAUDS ARRAY_SIZE(sc26198_baudtable)
602 /*****************************************************************************/
605 * Define the driver info for a user level control device. Used mainly
606 * to get at port stats - only not using the port device itself.
608 static const struct file_operations stl_fsiomem
= {
609 .owner
= THIS_MODULE
,
610 .unlocked_ioctl
= stl_memioctl
,
611 .llseek
= noop_llseek
,
614 static struct class *stallion_class
;
616 static void stl_cd_change(struct stlport
*portp
)
618 unsigned int oldsigs
= portp
->sigs
;
619 struct tty_struct
*tty
= tty_port_tty_get(&portp
->port
);
624 portp
->sigs
= stl_getsignals(portp
);
626 if ((portp
->sigs
& TIOCM_CD
) && ((oldsigs
& TIOCM_CD
) == 0))
627 wake_up_interruptible(&portp
->port
.open_wait
);
629 if ((oldsigs
& TIOCM_CD
) && ((portp
->sigs
& TIOCM_CD
) == 0))
630 if (portp
->port
.flags
& ASYNC_CHECK_CD
)
636 * Check for any arguments passed in on the module load command line.
639 /*****************************************************************************/
642 * Parse the supplied argument string, into the board conf struct.
645 static int __init
stl_parsebrd(struct stlconf
*confp
, char **argp
)
650 pr_debug("stl_parsebrd(confp=%p,argp=%p)\n", confp
, argp
);
652 if ((argp
[0] == NULL
) || (*argp
[0] == 0))
655 for (sp
= argp
[0], i
= 0; (*sp
!= 0) && (i
< 25); sp
++, i
++)
658 for (i
= 0; i
< ARRAY_SIZE(stl_brdstr
); i
++)
659 if (strcmp(stl_brdstr
[i
].name
, argp
[0]) == 0)
662 if (i
== ARRAY_SIZE(stl_brdstr
)) {
663 printk("STALLION: unknown board name, %s?\n", argp
[0]);
667 confp
->brdtype
= stl_brdstr
[i
].type
;
670 if ((argp
[i
] != NULL
) && (*argp
[i
] != 0))
671 confp
->ioaddr1
= simple_strtoul(argp
[i
], NULL
, 0);
673 if (confp
->brdtype
== BRD_ECH
) {
674 if ((argp
[i
] != NULL
) && (*argp
[i
] != 0))
675 confp
->ioaddr2
= simple_strtoul(argp
[i
], NULL
, 0);
678 if ((argp
[i
] != NULL
) && (*argp
[i
] != 0))
679 confp
->irq
= simple_strtoul(argp
[i
], NULL
, 0);
683 /*****************************************************************************/
686 * Allocate a new board structure. Fill out the basic info in it.
689 static struct stlbrd
*stl_allocbrd(void)
693 brdp
= kzalloc(sizeof(struct stlbrd
), GFP_KERNEL
);
695 printk("STALLION: failed to allocate memory (size=%Zd)\n",
696 sizeof(struct stlbrd
));
700 brdp
->magic
= STL_BOARDMAGIC
;
704 /*****************************************************************************/
706 static int stl_activate(struct tty_port
*port
, struct tty_struct
*tty
)
708 struct stlport
*portp
= container_of(port
, struct stlport
, port
);
709 if (!portp
->tx
.buf
) {
710 portp
->tx
.buf
= kmalloc(STL_TXBUFSIZE
, GFP_KERNEL
);
713 portp
->tx
.head
= portp
->tx
.buf
;
714 portp
->tx
.tail
= portp
->tx
.buf
;
716 stl_setport(portp
, tty
->termios
);
717 portp
->sigs
= stl_getsignals(portp
);
718 stl_setsignals(portp
, 1, 1);
719 stl_enablerxtx(portp
, 1, 1);
720 stl_startrxtx(portp
, 1, 0);
724 static int stl_open(struct tty_struct
*tty
, struct file
*filp
)
726 struct stlport
*portp
;
728 unsigned int minordev
, brdnr
, panelnr
;
731 pr_debug("stl_open(tty=%p,filp=%p): device=%s\n", tty
, filp
, tty
->name
);
733 minordev
= tty
->index
;
734 brdnr
= MINOR2BRD(minordev
);
735 if (brdnr
>= stl_nrbrds
)
737 brdp
= stl_brds
[brdnr
];
741 minordev
= MINOR2PORT(minordev
);
742 for (portnr
= -1, panelnr
= 0; panelnr
< STL_MAXPANELS
; panelnr
++) {
743 if (brdp
->panels
[panelnr
] == NULL
)
745 if (minordev
< brdp
->panels
[panelnr
]->nrports
) {
749 minordev
-= brdp
->panels
[panelnr
]->nrports
;
754 portp
= brdp
->panels
[panelnr
]->ports
[portnr
];
758 tty
->driver_data
= portp
;
759 return tty_port_open(&portp
->port
, tty
, filp
);
763 /*****************************************************************************/
765 static int stl_carrier_raised(struct tty_port
*port
)
767 struct stlport
*portp
= container_of(port
, struct stlport
, port
);
768 return (portp
->sigs
& TIOCM_CD
) ? 1 : 0;
771 static void stl_dtr_rts(struct tty_port
*port
, int on
)
773 struct stlport
*portp
= container_of(port
, struct stlport
, port
);
774 /* Takes brd_lock internally */
775 stl_setsignals(portp
, on
, on
);
778 /*****************************************************************************/
780 static void stl_flushbuffer(struct tty_struct
*tty
)
782 struct stlport
*portp
;
784 pr_debug("stl_flushbuffer(tty=%p)\n", tty
);
786 portp
= tty
->driver_data
;
794 /*****************************************************************************/
796 static void stl_waituntilsent(struct tty_struct
*tty
, int timeout
)
798 struct stlport
*portp
;
801 pr_debug("stl_waituntilsent(tty=%p,timeout=%d)\n", tty
, timeout
);
803 portp
= tty
->driver_data
;
809 tend
= jiffies
+ timeout
;
811 while (stl_datastate(portp
)) {
812 if (signal_pending(current
))
814 msleep_interruptible(20);
815 if (time_after_eq(jiffies
, tend
))
820 /*****************************************************************************/
822 static void stl_shutdown(struct tty_port
*port
)
824 struct stlport
*portp
= container_of(port
, struct stlport
, port
);
825 stl_disableintrs(portp
);
826 stl_enablerxtx(portp
, 0, 0);
829 if (portp
->tx
.buf
!= NULL
) {
830 kfree(portp
->tx
.buf
);
831 portp
->tx
.buf
= NULL
;
832 portp
->tx
.head
= NULL
;
833 portp
->tx
.tail
= NULL
;
837 static void stl_close(struct tty_struct
*tty
, struct file
*filp
)
839 struct stlport
*portp
;
840 pr_debug("stl_close(tty=%p,filp=%p)\n", tty
, filp
);
842 portp
= tty
->driver_data
;
845 tty_port_close(&portp
->port
, tty
, filp
);
848 /*****************************************************************************/
851 * Write routine. Take data and stuff it in to the TX ring queue.
852 * If transmit interrupts are not running then start them.
855 static int stl_write(struct tty_struct
*tty
, const unsigned char *buf
, int count
)
857 struct stlport
*portp
;
858 unsigned int len
, stlen
;
859 unsigned char *chbuf
;
862 pr_debug("stl_write(tty=%p,buf=%p,count=%d)\n", tty
, buf
, count
);
864 portp
= tty
->driver_data
;
867 if (portp
->tx
.buf
== NULL
)
871 * If copying direct from user space we must cater for page faults,
872 * causing us to "sleep" here for a while. To handle this copy in all
873 * the data we need now, into a local buffer. Then when we got it all
874 * copy it into the TX buffer.
876 chbuf
= (unsigned char *) buf
;
878 head
= portp
->tx
.head
;
879 tail
= portp
->tx
.tail
;
881 len
= STL_TXBUFSIZE
- (head
- tail
) - 1;
882 stlen
= STL_TXBUFSIZE
- (head
- portp
->tx
.buf
);
884 len
= tail
- head
- 1;
888 len
= min(len
, (unsigned int)count
);
891 stlen
= min(len
, stlen
);
892 memcpy(head
, chbuf
, stlen
);
897 if (head
>= (portp
->tx
.buf
+ STL_TXBUFSIZE
)) {
898 head
= portp
->tx
.buf
;
902 portp
->tx
.head
= head
;
904 clear_bit(ASYI_TXLOW
, &portp
->istate
);
905 stl_startrxtx(portp
, -1, 1);
910 /*****************************************************************************/
912 static int stl_putchar(struct tty_struct
*tty
, unsigned char ch
)
914 struct stlport
*portp
;
918 pr_debug("stl_putchar(tty=%p,ch=%x)\n", tty
, ch
);
920 portp
= tty
->driver_data
;
923 if (portp
->tx
.buf
== NULL
)
926 head
= portp
->tx
.head
;
927 tail
= portp
->tx
.tail
;
929 len
= (head
>= tail
) ? (STL_TXBUFSIZE
- (head
- tail
)) : (tail
- head
);
934 if (head
>= (portp
->tx
.buf
+ STL_TXBUFSIZE
))
935 head
= portp
->tx
.buf
;
937 portp
->tx
.head
= head
;
941 /*****************************************************************************/
944 * If there are any characters in the buffer then make sure that TX
945 * interrupts are on and get'em out. Normally used after the putchar
946 * routine has been called.
949 static void stl_flushchars(struct tty_struct
*tty
)
951 struct stlport
*portp
;
953 pr_debug("stl_flushchars(tty=%p)\n", tty
);
955 portp
= tty
->driver_data
;
958 if (portp
->tx
.buf
== NULL
)
961 stl_startrxtx(portp
, -1, 1);
964 /*****************************************************************************/
966 static int stl_writeroom(struct tty_struct
*tty
)
968 struct stlport
*portp
;
971 pr_debug("stl_writeroom(tty=%p)\n", tty
);
973 portp
= tty
->driver_data
;
976 if (portp
->tx
.buf
== NULL
)
979 head
= portp
->tx
.head
;
980 tail
= portp
->tx
.tail
;
981 return (head
>= tail
) ? (STL_TXBUFSIZE
- (head
- tail
) - 1) : (tail
- head
- 1);
984 /*****************************************************************************/
987 * Return number of chars in the TX buffer. Normally we would just
988 * calculate the number of chars in the buffer and return that, but if
989 * the buffer is empty and TX interrupts are still on then we return
990 * that the buffer still has 1 char in it. This way whoever called us
991 * will not think that ALL chars have drained - since the UART still
992 * must have some chars in it (we are busy after all).
995 static int stl_charsinbuffer(struct tty_struct
*tty
)
997 struct stlport
*portp
;
1001 pr_debug("stl_charsinbuffer(tty=%p)\n", tty
);
1003 portp
= tty
->driver_data
;
1006 if (portp
->tx
.buf
== NULL
)
1009 head
= portp
->tx
.head
;
1010 tail
= portp
->tx
.tail
;
1011 size
= (head
>= tail
) ? (head
- tail
) : (STL_TXBUFSIZE
- (tail
- head
));
1012 if ((size
== 0) && test_bit(ASYI_TXBUSY
, &portp
->istate
))
1017 /*****************************************************************************/
1020 * Generate the serial struct info.
1023 static int stl_getserial(struct stlport
*portp
, struct serial_struct __user
*sp
)
1025 struct serial_struct sio
;
1026 struct stlbrd
*brdp
;
1028 pr_debug("stl_getserial(portp=%p,sp=%p)\n", portp
, sp
);
1030 memset(&sio
, 0, sizeof(struct serial_struct
));
1032 mutex_lock(&portp
->port
.mutex
);
1033 sio
.line
= portp
->portnr
;
1034 sio
.port
= portp
->ioaddr
;
1035 sio
.flags
= portp
->port
.flags
;
1036 sio
.baud_base
= portp
->baud_base
;
1037 sio
.close_delay
= portp
->close_delay
;
1038 sio
.closing_wait
= portp
->closing_wait
;
1039 sio
.custom_divisor
= portp
->custom_divisor
;
1041 if (portp
->uartp
== &stl_cd1400uart
) {
1042 sio
.type
= PORT_CIRRUS
;
1043 sio
.xmit_fifo_size
= CD1400_TXFIFOSIZE
;
1045 sio
.type
= PORT_UNKNOWN
;
1046 sio
.xmit_fifo_size
= SC26198_TXFIFOSIZE
;
1049 brdp
= stl_brds
[portp
->brdnr
];
1051 sio
.irq
= brdp
->irq
;
1052 mutex_unlock(&portp
->port
.mutex
);
1054 return copy_to_user(sp
, &sio
, sizeof(struct serial_struct
)) ? -EFAULT
: 0;
1057 /*****************************************************************************/
1060 * Set port according to the serial struct info.
1061 * At this point we do not do any auto-configure stuff, so we will
1062 * just quietly ignore any requests to change irq, etc.
1065 static int stl_setserial(struct tty_struct
*tty
, struct serial_struct __user
*sp
)
1067 struct stlport
* portp
= tty
->driver_data
;
1068 struct serial_struct sio
;
1070 pr_debug("stl_setserial(portp=%p,sp=%p)\n", portp
, sp
);
1072 if (copy_from_user(&sio
, sp
, sizeof(struct serial_struct
)))
1074 mutex_lock(&portp
->port
.mutex
);
1075 if (!capable(CAP_SYS_ADMIN
)) {
1076 if ((sio
.baud_base
!= portp
->baud_base
) ||
1077 (sio
.close_delay
!= portp
->close_delay
) ||
1078 ((sio
.flags
& ~ASYNC_USR_MASK
) !=
1079 (portp
->port
.flags
& ~ASYNC_USR_MASK
))) {
1080 mutex_unlock(&portp
->port
.mutex
);
1085 portp
->port
.flags
= (portp
->port
.flags
& ~ASYNC_USR_MASK
) |
1086 (sio
.flags
& ASYNC_USR_MASK
);
1087 portp
->baud_base
= sio
.baud_base
;
1088 portp
->close_delay
= sio
.close_delay
;
1089 portp
->closing_wait
= sio
.closing_wait
;
1090 portp
->custom_divisor
= sio
.custom_divisor
;
1091 mutex_unlock(&portp
->port
.mutex
);
1092 stl_setport(portp
, tty
->termios
);
1096 /*****************************************************************************/
1098 static int stl_tiocmget(struct tty_struct
*tty
, struct file
*file
)
1100 struct stlport
*portp
;
1102 portp
= tty
->driver_data
;
1105 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1108 return stl_getsignals(portp
);
1111 static int stl_tiocmset(struct tty_struct
*tty
, struct file
*file
,
1112 unsigned int set
, unsigned int clear
)
1114 struct stlport
*portp
;
1115 int rts
= -1, dtr
= -1;
1117 portp
= tty
->driver_data
;
1120 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1123 if (set
& TIOCM_RTS
)
1125 if (set
& TIOCM_DTR
)
1127 if (clear
& TIOCM_RTS
)
1129 if (clear
& TIOCM_DTR
)
1132 stl_setsignals(portp
, dtr
, rts
);
1136 static int stl_ioctl(struct tty_struct
*tty
, struct file
*file
, unsigned int cmd
, unsigned long arg
)
1138 struct stlport
*portp
;
1140 void __user
*argp
= (void __user
*)arg
;
1142 pr_debug("stl_ioctl(tty=%p,file=%p,cmd=%x,arg=%lx)\n", tty
, file
, cmd
,
1145 portp
= tty
->driver_data
;
1149 if ((cmd
!= TIOCGSERIAL
) && (cmd
!= TIOCSSERIAL
) &&
1150 (cmd
!= COM_GETPORTSTATS
) && (cmd
!= COM_CLRPORTSTATS
))
1151 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1158 rc
= stl_getserial(portp
, argp
);
1161 rc
= stl_setserial(tty
, argp
);
1163 case COM_GETPORTSTATS
:
1164 rc
= stl_getportstats(tty
, portp
, argp
);
1166 case COM_CLRPORTSTATS
:
1167 rc
= stl_clrportstats(portp
, argp
);
1173 case TIOCSERGSTRUCT
:
1174 case TIOCSERGETMULTI
:
1175 case TIOCSERSETMULTI
:
1183 /*****************************************************************************/
1186 * Start the transmitter again. Just turn TX interrupts back on.
1189 static void stl_start(struct tty_struct
*tty
)
1191 struct stlport
*portp
;
1193 pr_debug("stl_start(tty=%p)\n", tty
);
1195 portp
= tty
->driver_data
;
1198 stl_startrxtx(portp
, -1, 1);
1201 /*****************************************************************************/
1203 static void stl_settermios(struct tty_struct
*tty
, struct ktermios
*old
)
1205 struct stlport
*portp
;
1206 struct ktermios
*tiosp
;
1208 pr_debug("stl_settermios(tty=%p,old=%p)\n", tty
, old
);
1210 portp
= tty
->driver_data
;
1214 tiosp
= tty
->termios
;
1215 if ((tiosp
->c_cflag
== old
->c_cflag
) &&
1216 (tiosp
->c_iflag
== old
->c_iflag
))
1219 stl_setport(portp
, tiosp
);
1220 stl_setsignals(portp
, ((tiosp
->c_cflag
& (CBAUD
& ~CBAUDEX
)) ? 1 : 0),
1222 if ((old
->c_cflag
& CRTSCTS
) && ((tiosp
->c_cflag
& CRTSCTS
) == 0)) {
1223 tty
->hw_stopped
= 0;
1226 if (((old
->c_cflag
& CLOCAL
) == 0) && (tiosp
->c_cflag
& CLOCAL
))
1227 wake_up_interruptible(&portp
->port
.open_wait
);
1230 /*****************************************************************************/
1233 * Attempt to flow control who ever is sending us data. Based on termios
1234 * settings use software or/and hardware flow control.
1237 static void stl_throttle(struct tty_struct
*tty
)
1239 struct stlport
*portp
;
1241 pr_debug("stl_throttle(tty=%p)\n", tty
);
1243 portp
= tty
->driver_data
;
1246 stl_flowctrl(portp
, 0);
1249 /*****************************************************************************/
1252 * Unflow control the device sending us data...
1255 static void stl_unthrottle(struct tty_struct
*tty
)
1257 struct stlport
*portp
;
1259 pr_debug("stl_unthrottle(tty=%p)\n", tty
);
1261 portp
= tty
->driver_data
;
1264 stl_flowctrl(portp
, 1);
1267 /*****************************************************************************/
1270 * Stop the transmitter. Basically to do this we will just turn TX
1274 static void stl_stop(struct tty_struct
*tty
)
1276 struct stlport
*portp
;
1278 pr_debug("stl_stop(tty=%p)\n", tty
);
1280 portp
= tty
->driver_data
;
1283 stl_startrxtx(portp
, -1, 0);
1286 /*****************************************************************************/
1289 * Hangup this port. This is pretty much like closing the port, only
1290 * a little more brutal. No waiting for data to drain. Shutdown the
1291 * port and maybe drop signals.
1294 static void stl_hangup(struct tty_struct
*tty
)
1296 struct stlport
*portp
= tty
->driver_data
;
1297 pr_debug("stl_hangup(tty=%p)\n", tty
);
1301 tty_port_hangup(&portp
->port
);
1304 /*****************************************************************************/
1306 static int stl_breakctl(struct tty_struct
*tty
, int state
)
1308 struct stlport
*portp
;
1310 pr_debug("stl_breakctl(tty=%p,state=%d)\n", tty
, state
);
1312 portp
= tty
->driver_data
;
1316 stl_sendbreak(portp
, ((state
== -1) ? 1 : 2));
1320 /*****************************************************************************/
1322 static void stl_sendxchar(struct tty_struct
*tty
, char ch
)
1324 struct stlport
*portp
;
1326 pr_debug("stl_sendxchar(tty=%p,ch=%x)\n", tty
, ch
);
1328 portp
= tty
->driver_data
;
1332 if (ch
== STOP_CHAR(tty
))
1333 stl_sendflow(portp
, 0);
1334 else if (ch
== START_CHAR(tty
))
1335 stl_sendflow(portp
, 1);
1337 stl_putchar(tty
, ch
);
1340 static void stl_portinfo(struct seq_file
*m
, struct stlport
*portp
, int portnr
)
1345 seq_printf(m
, "%d: uart:%s tx:%d rx:%d",
1346 portnr
, (portp
->hwid
== 1) ? "SC26198" : "CD1400",
1347 (int) portp
->stats
.txtotal
, (int) portp
->stats
.rxtotal
);
1349 if (portp
->stats
.rxframing
)
1350 seq_printf(m
, " fe:%d", (int) portp
->stats
.rxframing
);
1351 if (portp
->stats
.rxparity
)
1352 seq_printf(m
, " pe:%d", (int) portp
->stats
.rxparity
);
1353 if (portp
->stats
.rxbreaks
)
1354 seq_printf(m
, " brk:%d", (int) portp
->stats
.rxbreaks
);
1355 if (portp
->stats
.rxoverrun
)
1356 seq_printf(m
, " oe:%d", (int) portp
->stats
.rxoverrun
);
1358 sigs
= stl_getsignals(portp
);
1360 if (sigs
& TIOCM_RTS
) {
1361 seq_printf(m
, "%c%s", sep
, "RTS");
1364 if (sigs
& TIOCM_CTS
) {
1365 seq_printf(m
, "%c%s", sep
, "CTS");
1368 if (sigs
& TIOCM_DTR
) {
1369 seq_printf(m
, "%c%s", sep
, "DTR");
1372 if (sigs
& TIOCM_CD
) {
1373 seq_printf(m
, "%c%s", sep
, "DCD");
1376 if (sigs
& TIOCM_DSR
) {
1377 seq_printf(m
, "%c%s", sep
, "DSR");
1383 /*****************************************************************************/
1386 * Port info, read from the /proc file system.
1389 static int stl_proc_show(struct seq_file
*m
, void *v
)
1391 struct stlbrd
*brdp
;
1392 struct stlpanel
*panelp
;
1393 struct stlport
*portp
;
1394 unsigned int brdnr
, panelnr
, portnr
;
1399 seq_printf(m
, "%s: version %s\n", stl_drvtitle
, stl_drvversion
);
1402 * We scan through for each board, panel and port. The offset is
1403 * calculated on the fly, and irrelevant ports are skipped.
1405 for (brdnr
= 0; brdnr
< stl_nrbrds
; brdnr
++) {
1406 brdp
= stl_brds
[brdnr
];
1409 if (brdp
->state
== 0)
1412 totalport
= brdnr
* STL_MAXPORTS
;
1413 for (panelnr
= 0; panelnr
< brdp
->nrpanels
; panelnr
++) {
1414 panelp
= brdp
->panels
[panelnr
];
1418 for (portnr
= 0; portnr
< panelp
->nrports
; portnr
++,
1420 portp
= panelp
->ports
[portnr
];
1423 stl_portinfo(m
, portp
, totalport
);
1430 static int stl_proc_open(struct inode
*inode
, struct file
*file
)
1432 return single_open(file
, stl_proc_show
, NULL
);
1435 static const struct file_operations stl_proc_fops
= {
1436 .owner
= THIS_MODULE
,
1437 .open
= stl_proc_open
,
1439 .llseek
= seq_lseek
,
1440 .release
= single_release
,
1443 /*****************************************************************************/
1446 * All board interrupts are vectored through here first. This code then
1447 * calls off to the approrpriate board interrupt handlers.
1450 static irqreturn_t
stl_intr(int irq
, void *dev_id
)
1452 struct stlbrd
*brdp
= dev_id
;
1454 pr_debug("stl_intr(brdp=%p,irq=%d)\n", brdp
, brdp
->irq
);
1456 return IRQ_RETVAL((* brdp
->isr
)(brdp
));
1459 /*****************************************************************************/
1462 * Interrupt service routine for EasyIO board types.
1465 static int stl_eiointr(struct stlbrd
*brdp
)
1467 struct stlpanel
*panelp
;
1468 unsigned int iobase
;
1471 spin_lock(&brd_lock
);
1472 panelp
= brdp
->panels
[0];
1473 iobase
= panelp
->iobase
;
1474 while (inb(brdp
->iostatus
) & EIO_INTRPEND
) {
1476 (* panelp
->isr
)(panelp
, iobase
);
1478 spin_unlock(&brd_lock
);
1482 /*****************************************************************************/
1485 * Interrupt service routine for ECH-AT board types.
1488 static int stl_echatintr(struct stlbrd
*brdp
)
1490 struct stlpanel
*panelp
;
1491 unsigned int ioaddr
, bnknr
;
1494 outb((brdp
->ioctrlval
| ECH_BRDENABLE
), brdp
->ioctrl
);
1496 while (inb(brdp
->iostatus
) & ECH_INTRPEND
) {
1498 for (bnknr
= 0; bnknr
< brdp
->nrbnks
; bnknr
++) {
1499 ioaddr
= brdp
->bnkstataddr
[bnknr
];
1500 if (inb(ioaddr
) & ECH_PNLINTRPEND
) {
1501 panelp
= brdp
->bnk2panel
[bnknr
];
1502 (* panelp
->isr
)(panelp
, (ioaddr
& 0xfffc));
1507 outb((brdp
->ioctrlval
| ECH_BRDDISABLE
), brdp
->ioctrl
);
1512 /*****************************************************************************/
1515 * Interrupt service routine for ECH-MCA board types.
1518 static int stl_echmcaintr(struct stlbrd
*brdp
)
1520 struct stlpanel
*panelp
;
1521 unsigned int ioaddr
, bnknr
;
1524 while (inb(brdp
->iostatus
) & ECH_INTRPEND
) {
1526 for (bnknr
= 0; bnknr
< brdp
->nrbnks
; bnknr
++) {
1527 ioaddr
= brdp
->bnkstataddr
[bnknr
];
1528 if (inb(ioaddr
) & ECH_PNLINTRPEND
) {
1529 panelp
= brdp
->bnk2panel
[bnknr
];
1530 (* panelp
->isr
)(panelp
, (ioaddr
& 0xfffc));
1537 /*****************************************************************************/
1540 * Interrupt service routine for ECH-PCI board types.
1543 static int stl_echpciintr(struct stlbrd
*brdp
)
1545 struct stlpanel
*panelp
;
1546 unsigned int ioaddr
, bnknr
, recheck
;
1551 for (bnknr
= 0; bnknr
< brdp
->nrbnks
; bnknr
++) {
1552 outb(brdp
->bnkpageaddr
[bnknr
], brdp
->ioctrl
);
1553 ioaddr
= brdp
->bnkstataddr
[bnknr
];
1554 if (inb(ioaddr
) & ECH_PNLINTRPEND
) {
1555 panelp
= brdp
->bnk2panel
[bnknr
];
1556 (* panelp
->isr
)(panelp
, (ioaddr
& 0xfffc));
1567 /*****************************************************************************/
1570 * Interrupt service routine for ECH-8/64-PCI board types.
1573 static int stl_echpci64intr(struct stlbrd
*brdp
)
1575 struct stlpanel
*panelp
;
1576 unsigned int ioaddr
, bnknr
;
1579 while (inb(brdp
->ioctrl
) & 0x1) {
1581 for (bnknr
= 0; bnknr
< brdp
->nrbnks
; bnknr
++) {
1582 ioaddr
= brdp
->bnkstataddr
[bnknr
];
1583 if (inb(ioaddr
) & ECH_PNLINTRPEND
) {
1584 panelp
= brdp
->bnk2panel
[bnknr
];
1585 (* panelp
->isr
)(panelp
, (ioaddr
& 0xfffc));
1593 /*****************************************************************************/
1596 * Initialize all the ports on a panel.
1599 static int __devinit
stl_initports(struct stlbrd
*brdp
, struct stlpanel
*panelp
)
1601 struct stlport
*portp
;
1605 pr_debug("stl_initports(brdp=%p,panelp=%p)\n", brdp
, panelp
);
1607 chipmask
= stl_panelinit(brdp
, panelp
);
1610 * All UART's are initialized (if found!). Now go through and setup
1611 * each ports data structures.
1613 for (i
= 0; i
< panelp
->nrports
; i
++) {
1614 portp
= kzalloc(sizeof(struct stlport
), GFP_KERNEL
);
1616 printk("STALLION: failed to allocate memory "
1617 "(size=%Zd)\n", sizeof(struct stlport
));
1620 tty_port_init(&portp
->port
);
1621 portp
->port
.ops
= &stl_port_ops
;
1622 portp
->magic
= STL_PORTMAGIC
;
1624 portp
->brdnr
= panelp
->brdnr
;
1625 portp
->panelnr
= panelp
->panelnr
;
1626 portp
->uartp
= panelp
->uartp
;
1627 portp
->clk
= brdp
->clk
;
1628 portp
->baud_base
= STL_BAUDBASE
;
1629 portp
->close_delay
= STL_CLOSEDELAY
;
1630 portp
->closing_wait
= 30 * HZ
;
1631 init_waitqueue_head(&portp
->port
.open_wait
);
1632 init_waitqueue_head(&portp
->port
.close_wait
);
1633 portp
->stats
.brd
= portp
->brdnr
;
1634 portp
->stats
.panel
= portp
->panelnr
;
1635 portp
->stats
.port
= portp
->portnr
;
1636 panelp
->ports
[i
] = portp
;
1637 stl_portinit(brdp
, panelp
, portp
);
1643 static void stl_cleanup_panels(struct stlbrd
*brdp
)
1645 struct stlpanel
*panelp
;
1646 struct stlport
*portp
;
1648 struct tty_struct
*tty
;
1650 for (j
= 0; j
< STL_MAXPANELS
; j
++) {
1651 panelp
= brdp
->panels
[j
];
1654 for (k
= 0; k
< STL_PORTSPERPANEL
; k
++) {
1655 portp
= panelp
->ports
[k
];
1658 tty
= tty_port_tty_get(&portp
->port
);
1663 kfree(portp
->tx
.buf
);
1670 /*****************************************************************************/
1673 * Try to find and initialize an EasyIO board.
1676 static int __devinit
stl_initeio(struct stlbrd
*brdp
)
1678 struct stlpanel
*panelp
;
1679 unsigned int status
;
1683 pr_debug("stl_initeio(brdp=%p)\n", brdp
);
1685 brdp
->ioctrl
= brdp
->ioaddr1
+ 1;
1686 brdp
->iostatus
= brdp
->ioaddr1
+ 2;
1688 status
= inb(brdp
->iostatus
);
1689 if ((status
& EIO_IDBITMASK
) == EIO_MK3
)
1693 * Handle board specific stuff now. The real difference is PCI
1696 if (brdp
->brdtype
== BRD_EASYIOPCI
) {
1697 brdp
->iosize1
= 0x80;
1698 brdp
->iosize2
= 0x80;
1699 name
= "serial(EIO-PCI)";
1700 outb(0x41, (brdp
->ioaddr2
+ 0x4c));
1703 name
= "serial(EIO)";
1704 if ((brdp
->irq
< 0) || (brdp
->irq
> 15) ||
1705 (stl_vecmap
[brdp
->irq
] == (unsigned char) 0xff)) {
1706 printk("STALLION: invalid irq=%d for brd=%d\n",
1707 brdp
->irq
, brdp
->brdnr
);
1711 outb((stl_vecmap
[brdp
->irq
] | EIO_0WS
|
1712 ((brdp
->irqtype
) ? EIO_INTLEVEL
: EIO_INTEDGE
)),
1717 if (!request_region(brdp
->ioaddr1
, brdp
->iosize1
, name
)) {
1718 printk(KERN_WARNING
"STALLION: Warning, board %d I/O address "
1719 "%x conflicts with another device\n", brdp
->brdnr
,
1724 if (brdp
->iosize2
> 0)
1725 if (!request_region(brdp
->ioaddr2
, brdp
->iosize2
, name
)) {
1726 printk(KERN_WARNING
"STALLION: Warning, board %d I/O "
1727 "address %x conflicts with another device\n",
1728 brdp
->brdnr
, brdp
->ioaddr2
);
1729 printk(KERN_WARNING
"STALLION: Warning, also "
1730 "releasing board %d I/O address %x \n",
1731 brdp
->brdnr
, brdp
->ioaddr1
);
1736 * Everything looks OK, so let's go ahead and probe for the hardware.
1738 brdp
->clk
= CD1400_CLK
;
1739 brdp
->isr
= stl_eiointr
;
1742 switch (status
& EIO_IDBITMASK
) {
1744 brdp
->clk
= CD1400_CLK8M
;
1754 switch (status
& EIO_BRDMASK
) {
1773 * We have verified that the board is actually present, so now we
1774 * can complete the setup.
1777 panelp
= kzalloc(sizeof(struct stlpanel
), GFP_KERNEL
);
1779 printk(KERN_WARNING
"STALLION: failed to allocate memory "
1780 "(size=%Zd)\n", sizeof(struct stlpanel
));
1785 panelp
->magic
= STL_PANELMAGIC
;
1786 panelp
->brdnr
= brdp
->brdnr
;
1787 panelp
->panelnr
= 0;
1788 panelp
->nrports
= brdp
->nrports
;
1789 panelp
->iobase
= brdp
->ioaddr1
;
1790 panelp
->hwid
= status
;
1791 if ((status
& EIO_IDBITMASK
) == EIO_MK3
) {
1792 panelp
->uartp
= &stl_sc26198uart
;
1793 panelp
->isr
= stl_sc26198intr
;
1795 panelp
->uartp
= &stl_cd1400uart
;
1796 panelp
->isr
= stl_cd1400eiointr
;
1799 brdp
->panels
[0] = panelp
;
1801 brdp
->state
|= BRD_FOUND
;
1802 brdp
->hwid
= status
;
1803 if (request_irq(brdp
->irq
, stl_intr
, IRQF_SHARED
, name
, brdp
) != 0) {
1804 printk("STALLION: failed to register interrupt "
1805 "routine for %s irq=%d\n", name
, brdp
->irq
);
1812 stl_cleanup_panels(brdp
);
1814 if (brdp
->iosize2
> 0)
1815 release_region(brdp
->ioaddr2
, brdp
->iosize2
);
1817 release_region(brdp
->ioaddr1
, brdp
->iosize1
);
1822 /*****************************************************************************/
1825 * Try to find an ECH board and initialize it. This code is capable of
1826 * dealing with all types of ECH board.
1829 static int __devinit
stl_initech(struct stlbrd
*brdp
)
1831 struct stlpanel
*panelp
;
1832 unsigned int status
, nxtid
, ioaddr
, conflict
, panelnr
, banknr
, i
;
1836 pr_debug("stl_initech(brdp=%p)\n", brdp
);
1842 * Set up the initial board register contents for boards. This varies a
1843 * bit between the different board types. So we need to handle each
1844 * separately. Also do a check that the supplied IRQ is good.
1846 switch (brdp
->brdtype
) {
1849 brdp
->isr
= stl_echatintr
;
1850 brdp
->ioctrl
= brdp
->ioaddr1
+ 1;
1851 brdp
->iostatus
= brdp
->ioaddr1
+ 1;
1852 status
= inb(brdp
->iostatus
);
1853 if ((status
& ECH_IDBITMASK
) != ECH_ID
) {
1857 if ((brdp
->irq
< 0) || (brdp
->irq
> 15) ||
1858 (stl_vecmap
[brdp
->irq
] == (unsigned char) 0xff)) {
1859 printk("STALLION: invalid irq=%d for brd=%d\n",
1860 brdp
->irq
, brdp
->brdnr
);
1864 status
= ((brdp
->ioaddr2
& ECH_ADDR2MASK
) >> 1);
1865 status
|= (stl_vecmap
[brdp
->irq
] << 1);
1866 outb((status
| ECH_BRDRESET
), brdp
->ioaddr1
);
1867 brdp
->ioctrlval
= ECH_INTENABLE
|
1868 ((brdp
->irqtype
) ? ECH_INTLEVEL
: ECH_INTEDGE
);
1869 for (i
= 0; i
< 10; i
++)
1870 outb((brdp
->ioctrlval
| ECH_BRDENABLE
), brdp
->ioctrl
);
1873 name
= "serial(EC8/32)";
1874 outb(status
, brdp
->ioaddr1
);
1878 brdp
->isr
= stl_echmcaintr
;
1879 brdp
->ioctrl
= brdp
->ioaddr1
+ 0x20;
1880 brdp
->iostatus
= brdp
->ioctrl
;
1881 status
= inb(brdp
->iostatus
);
1882 if ((status
& ECH_IDBITMASK
) != ECH_ID
) {
1886 if ((brdp
->irq
< 0) || (brdp
->irq
> 15) ||
1887 (stl_vecmap
[brdp
->irq
] == (unsigned char) 0xff)) {
1888 printk("STALLION: invalid irq=%d for brd=%d\n",
1889 brdp
->irq
, brdp
->brdnr
);
1893 outb(ECHMC_BRDRESET
, brdp
->ioctrl
);
1894 outb(ECHMC_INTENABLE
, brdp
->ioctrl
);
1896 name
= "serial(EC8/32-MC)";
1900 brdp
->isr
= stl_echpciintr
;
1901 brdp
->ioctrl
= brdp
->ioaddr1
+ 2;
1904 name
= "serial(EC8/32-PCI)";
1908 brdp
->isr
= stl_echpci64intr
;
1909 brdp
->ioctrl
= brdp
->ioaddr2
+ 0x40;
1910 outb(0x43, (brdp
->ioaddr1
+ 0x4c));
1911 brdp
->iosize1
= 0x80;
1912 brdp
->iosize2
= 0x80;
1913 name
= "serial(EC8/64-PCI)";
1917 printk("STALLION: unknown board type=%d\n", brdp
->brdtype
);
1923 * Check boards for possible IO address conflicts and return fail status
1924 * if an IO conflict found.
1927 if (!request_region(brdp
->ioaddr1
, brdp
->iosize1
, name
)) {
1928 printk(KERN_WARNING
"STALLION: Warning, board %d I/O address "
1929 "%x conflicts with another device\n", brdp
->brdnr
,
1934 if (brdp
->iosize2
> 0)
1935 if (!request_region(brdp
->ioaddr2
, brdp
->iosize2
, name
)) {
1936 printk(KERN_WARNING
"STALLION: Warning, board %d I/O "
1937 "address %x conflicts with another device\n",
1938 brdp
->brdnr
, brdp
->ioaddr2
);
1939 printk(KERN_WARNING
"STALLION: Warning, also "
1940 "releasing board %d I/O address %x \n",
1941 brdp
->brdnr
, brdp
->ioaddr1
);
1946 * Scan through the secondary io address space looking for panels.
1947 * As we find'em allocate and initialize panel structures for each.
1949 brdp
->clk
= CD1400_CLK
;
1950 brdp
->hwid
= status
;
1952 ioaddr
= brdp
->ioaddr2
;
1957 for (i
= 0; i
< STL_MAXPANELS
; i
++) {
1958 if (brdp
->brdtype
== BRD_ECHPCI
) {
1959 outb(nxtid
, brdp
->ioctrl
);
1960 ioaddr
= brdp
->ioaddr2
;
1962 status
= inb(ioaddr
+ ECH_PNLSTATUS
);
1963 if ((status
& ECH_PNLIDMASK
) != nxtid
)
1965 panelp
= kzalloc(sizeof(struct stlpanel
), GFP_KERNEL
);
1967 printk("STALLION: failed to allocate memory "
1968 "(size=%Zd)\n", sizeof(struct stlpanel
));
1972 panelp
->magic
= STL_PANELMAGIC
;
1973 panelp
->brdnr
= brdp
->brdnr
;
1974 panelp
->panelnr
= panelnr
;
1975 panelp
->iobase
= ioaddr
;
1976 panelp
->pagenr
= nxtid
;
1977 panelp
->hwid
= status
;
1978 brdp
->bnk2panel
[banknr
] = panelp
;
1979 brdp
->bnkpageaddr
[banknr
] = nxtid
;
1980 brdp
->bnkstataddr
[banknr
++] = ioaddr
+ ECH_PNLSTATUS
;
1982 if (status
& ECH_PNLXPID
) {
1983 panelp
->uartp
= &stl_sc26198uart
;
1984 panelp
->isr
= stl_sc26198intr
;
1985 if (status
& ECH_PNL16PORT
) {
1986 panelp
->nrports
= 16;
1987 brdp
->bnk2panel
[banknr
] = panelp
;
1988 brdp
->bnkpageaddr
[banknr
] = nxtid
;
1989 brdp
->bnkstataddr
[banknr
++] = ioaddr
+ 4 +
1992 panelp
->nrports
= 8;
1994 panelp
->uartp
= &stl_cd1400uart
;
1995 panelp
->isr
= stl_cd1400echintr
;
1996 if (status
& ECH_PNL16PORT
) {
1997 panelp
->nrports
= 16;
1998 panelp
->ackmask
= 0x80;
1999 if (brdp
->brdtype
!= BRD_ECHPCI
)
2000 ioaddr
+= EREG_BANKSIZE
;
2001 brdp
->bnk2panel
[banknr
] = panelp
;
2002 brdp
->bnkpageaddr
[banknr
] = ++nxtid
;
2003 brdp
->bnkstataddr
[banknr
++] = ioaddr
+
2006 panelp
->nrports
= 8;
2007 panelp
->ackmask
= 0xc0;
2012 ioaddr
+= EREG_BANKSIZE
;
2013 brdp
->nrports
+= panelp
->nrports
;
2014 brdp
->panels
[panelnr
++] = panelp
;
2015 if ((brdp
->brdtype
!= BRD_ECHPCI
) &&
2016 (ioaddr
>= (brdp
->ioaddr2
+ brdp
->iosize2
))) {
2022 brdp
->nrpanels
= panelnr
;
2023 brdp
->nrbnks
= banknr
;
2024 if (brdp
->brdtype
== BRD_ECH
)
2025 outb((brdp
->ioctrlval
| ECH_BRDDISABLE
), brdp
->ioctrl
);
2027 brdp
->state
|= BRD_FOUND
;
2028 if (request_irq(brdp
->irq
, stl_intr
, IRQF_SHARED
, name
, brdp
) != 0) {
2029 printk("STALLION: failed to register interrupt "
2030 "routine for %s irq=%d\n", name
, brdp
->irq
);
2037 stl_cleanup_panels(brdp
);
2038 if (brdp
->iosize2
> 0)
2039 release_region(brdp
->ioaddr2
, brdp
->iosize2
);
2041 release_region(brdp
->ioaddr1
, brdp
->iosize1
);
2046 /*****************************************************************************/
2049 * Initialize and configure the specified board.
2050 * Scan through all the boards in the configuration and see what we
2051 * can find. Handle EIO and the ECH boards a little differently here
2052 * since the initial search and setup is very different.
2055 static int __devinit
stl_brdinit(struct stlbrd
*brdp
)
2059 pr_debug("stl_brdinit(brdp=%p)\n", brdp
);
2061 switch (brdp
->brdtype
) {
2064 retval
= stl_initeio(brdp
);
2072 retval
= stl_initech(brdp
);
2077 printk("STALLION: board=%d is unknown board type=%d\n",
2078 brdp
->brdnr
, brdp
->brdtype
);
2083 if ((brdp
->state
& BRD_FOUND
) == 0) {
2084 printk("STALLION: %s board not found, board=%d io=%x irq=%d\n",
2085 stl_brdnames
[brdp
->brdtype
], brdp
->brdnr
,
2086 brdp
->ioaddr1
, brdp
->irq
);
2090 for (i
= 0; i
< STL_MAXPANELS
; i
++)
2091 if (brdp
->panels
[i
] != NULL
)
2092 stl_initports(brdp
, brdp
->panels
[i
]);
2094 printk("STALLION: %s found, board=%d io=%x irq=%d "
2095 "nrpanels=%d nrports=%d\n", stl_brdnames
[brdp
->brdtype
],
2096 brdp
->brdnr
, brdp
->ioaddr1
, brdp
->irq
, brdp
->nrpanels
,
2101 free_irq(brdp
->irq
, brdp
);
2103 stl_cleanup_panels(brdp
);
2105 release_region(brdp
->ioaddr1
, brdp
->iosize1
);
2106 if (brdp
->iosize2
> 0)
2107 release_region(brdp
->ioaddr2
, brdp
->iosize2
);
2112 /*****************************************************************************/
2115 * Find the next available board number that is free.
2118 static int __devinit
stl_getbrdnr(void)
2122 for (i
= 0; i
< STL_MAXBRDS
; i
++)
2123 if (stl_brds
[i
] == NULL
) {
2124 if (i
>= stl_nrbrds
)
2132 /*****************************************************************************/
2134 * We have a Stallion board. Allocate a board structure and
2135 * initialize it. Read its IO and IRQ resources from PCI
2136 * configuration space.
2139 static int __devinit
stl_pciprobe(struct pci_dev
*pdev
,
2140 const struct pci_device_id
*ent
)
2142 struct stlbrd
*brdp
;
2143 unsigned int i
, brdtype
= ent
->driver_data
;
2144 int brdnr
, retval
= -ENODEV
;
2146 if ((pdev
->class >> 8) == PCI_CLASS_STORAGE_IDE
)
2149 retval
= pci_enable_device(pdev
);
2152 brdp
= stl_allocbrd();
2157 mutex_lock(&stl_brdslock
);
2158 brdnr
= stl_getbrdnr();
2160 dev_err(&pdev
->dev
, "too many boards found, "
2161 "maximum supported %d\n", STL_MAXBRDS
);
2162 mutex_unlock(&stl_brdslock
);
2166 brdp
->brdnr
= (unsigned int)brdnr
;
2167 stl_brds
[brdp
->brdnr
] = brdp
;
2168 mutex_unlock(&stl_brdslock
);
2170 brdp
->brdtype
= brdtype
;
2171 brdp
->state
|= STL_PROBED
;
2174 * We have all resources from the board, so let's setup the actual
2175 * board structure now.
2179 brdp
->ioaddr2
= pci_resource_start(pdev
, 0);
2180 brdp
->ioaddr1
= pci_resource_start(pdev
, 1);
2183 brdp
->ioaddr2
= pci_resource_start(pdev
, 2);
2184 brdp
->ioaddr1
= pci_resource_start(pdev
, 1);
2187 brdp
->ioaddr1
= pci_resource_start(pdev
, 2);
2188 brdp
->ioaddr2
= pci_resource_start(pdev
, 1);
2191 dev_err(&pdev
->dev
, "unknown PCI board type=%u\n", brdtype
);
2195 brdp
->irq
= pdev
->irq
;
2196 retval
= stl_brdinit(brdp
);
2200 pci_set_drvdata(pdev
, brdp
);
2202 for (i
= 0; i
< brdp
->nrports
; i
++)
2203 tty_register_device(stl_serial
,
2204 brdp
->brdnr
* STL_MAXPORTS
+ i
, &pdev
->dev
);
2208 stl_brds
[brdp
->brdnr
] = NULL
;
2215 static void __devexit
stl_pciremove(struct pci_dev
*pdev
)
2217 struct stlbrd
*brdp
= pci_get_drvdata(pdev
);
2220 free_irq(brdp
->irq
, brdp
);
2222 stl_cleanup_panels(brdp
);
2224 release_region(brdp
->ioaddr1
, brdp
->iosize1
);
2225 if (brdp
->iosize2
> 0)
2226 release_region(brdp
->ioaddr2
, brdp
->iosize2
);
2228 for (i
= 0; i
< brdp
->nrports
; i
++)
2229 tty_unregister_device(stl_serial
,
2230 brdp
->brdnr
* STL_MAXPORTS
+ i
);
2232 stl_brds
[brdp
->brdnr
] = NULL
;
2236 static struct pci_driver stl_pcidriver
= {
2238 .id_table
= stl_pcibrds
,
2239 .probe
= stl_pciprobe
,
2240 .remove
= __devexit_p(stl_pciremove
)
2243 /*****************************************************************************/
2246 * Return the board stats structure to user app.
2249 static int stl_getbrdstats(combrd_t __user
*bp
)
2251 combrd_t stl_brdstats
;
2252 struct stlbrd
*brdp
;
2253 struct stlpanel
*panelp
;
2256 if (copy_from_user(&stl_brdstats
, bp
, sizeof(combrd_t
)))
2258 if (stl_brdstats
.brd
>= STL_MAXBRDS
)
2260 brdp
= stl_brds
[stl_brdstats
.brd
];
2264 memset(&stl_brdstats
, 0, sizeof(combrd_t
));
2265 stl_brdstats
.brd
= brdp
->brdnr
;
2266 stl_brdstats
.type
= brdp
->brdtype
;
2267 stl_brdstats
.hwid
= brdp
->hwid
;
2268 stl_brdstats
.state
= brdp
->state
;
2269 stl_brdstats
.ioaddr
= brdp
->ioaddr1
;
2270 stl_brdstats
.ioaddr2
= brdp
->ioaddr2
;
2271 stl_brdstats
.irq
= brdp
->irq
;
2272 stl_brdstats
.nrpanels
= brdp
->nrpanels
;
2273 stl_brdstats
.nrports
= brdp
->nrports
;
2274 for (i
= 0; i
< brdp
->nrpanels
; i
++) {
2275 panelp
= brdp
->panels
[i
];
2276 stl_brdstats
.panels
[i
].panel
= i
;
2277 stl_brdstats
.panels
[i
].hwid
= panelp
->hwid
;
2278 stl_brdstats
.panels
[i
].nrports
= panelp
->nrports
;
2281 return copy_to_user(bp
, &stl_brdstats
, sizeof(combrd_t
)) ? -EFAULT
: 0;
2284 /*****************************************************************************/
2287 * Resolve the referenced port number into a port struct pointer.
2290 static struct stlport
*stl_getport(int brdnr
, int panelnr
, int portnr
)
2292 struct stlbrd
*brdp
;
2293 struct stlpanel
*panelp
;
2295 if (brdnr
< 0 || brdnr
>= STL_MAXBRDS
)
2297 brdp
= stl_brds
[brdnr
];
2300 if (panelnr
< 0 || (unsigned int)panelnr
>= brdp
->nrpanels
)
2302 panelp
= brdp
->panels
[panelnr
];
2305 if (portnr
< 0 || (unsigned int)portnr
>= panelp
->nrports
)
2307 return panelp
->ports
[portnr
];
2310 /*****************************************************************************/
2313 * Return the port stats structure to user app. A NULL port struct
2314 * pointer passed in means that we need to find out from the app
2315 * what port to get stats for (used through board control device).
2318 static int stl_getportstats(struct tty_struct
*tty
, struct stlport
*portp
, comstats_t __user
*cp
)
2320 comstats_t stl_comstats
;
2321 unsigned char *head
, *tail
;
2322 unsigned long flags
;
2325 if (copy_from_user(&stl_comstats
, cp
, sizeof(comstats_t
)))
2327 portp
= stl_getport(stl_comstats
.brd
, stl_comstats
.panel
,
2333 mutex_lock(&portp
->port
.mutex
);
2334 portp
->stats
.state
= portp
->istate
;
2335 portp
->stats
.flags
= portp
->port
.flags
;
2336 portp
->stats
.hwid
= portp
->hwid
;
2338 portp
->stats
.ttystate
= 0;
2339 portp
->stats
.cflags
= 0;
2340 portp
->stats
.iflags
= 0;
2341 portp
->stats
.oflags
= 0;
2342 portp
->stats
.lflags
= 0;
2343 portp
->stats
.rxbuffered
= 0;
2345 spin_lock_irqsave(&stallion_lock
, flags
);
2346 if (tty
!= NULL
&& portp
->port
.tty
== tty
) {
2347 portp
->stats
.ttystate
= tty
->flags
;
2348 /* No longer available as a statistic */
2349 portp
->stats
.rxbuffered
= 1; /*tty->flip.count; */
2350 if (tty
->termios
!= NULL
) {
2351 portp
->stats
.cflags
= tty
->termios
->c_cflag
;
2352 portp
->stats
.iflags
= tty
->termios
->c_iflag
;
2353 portp
->stats
.oflags
= tty
->termios
->c_oflag
;
2354 portp
->stats
.lflags
= tty
->termios
->c_lflag
;
2357 spin_unlock_irqrestore(&stallion_lock
, flags
);
2359 head
= portp
->tx
.head
;
2360 tail
= portp
->tx
.tail
;
2361 portp
->stats
.txbuffered
= (head
>= tail
) ? (head
- tail
) :
2362 (STL_TXBUFSIZE
- (tail
- head
));
2364 portp
->stats
.signals
= (unsigned long) stl_getsignals(portp
);
2365 mutex_unlock(&portp
->port
.mutex
);
2367 return copy_to_user(cp
, &portp
->stats
,
2368 sizeof(comstats_t
)) ? -EFAULT
: 0;
2371 /*****************************************************************************/
2374 * Clear the port stats structure. We also return it zeroed out...
2377 static int stl_clrportstats(struct stlport
*portp
, comstats_t __user
*cp
)
2379 comstats_t stl_comstats
;
2382 if (copy_from_user(&stl_comstats
, cp
, sizeof(comstats_t
)))
2384 portp
= stl_getport(stl_comstats
.brd
, stl_comstats
.panel
,
2390 mutex_lock(&portp
->port
.mutex
);
2391 memset(&portp
->stats
, 0, sizeof(comstats_t
));
2392 portp
->stats
.brd
= portp
->brdnr
;
2393 portp
->stats
.panel
= portp
->panelnr
;
2394 portp
->stats
.port
= portp
->portnr
;
2395 mutex_unlock(&portp
->port
.mutex
);
2396 return copy_to_user(cp
, &portp
->stats
,
2397 sizeof(comstats_t
)) ? -EFAULT
: 0;
2400 /*****************************************************************************/
2403 * Return the entire driver ports structure to a user app.
2406 static int stl_getportstruct(struct stlport __user
*arg
)
2408 struct stlport stl_dummyport
;
2409 struct stlport
*portp
;
2411 if (copy_from_user(&stl_dummyport
, arg
, sizeof(struct stlport
)))
2413 portp
= stl_getport(stl_dummyport
.brdnr
, stl_dummyport
.panelnr
,
2414 stl_dummyport
.portnr
);
2417 return copy_to_user(arg
, portp
, sizeof(struct stlport
)) ? -EFAULT
: 0;
2420 /*****************************************************************************/
2423 * Return the entire driver board structure to a user app.
2426 static int stl_getbrdstruct(struct stlbrd __user
*arg
)
2428 struct stlbrd stl_dummybrd
;
2429 struct stlbrd
*brdp
;
2431 if (copy_from_user(&stl_dummybrd
, arg
, sizeof(struct stlbrd
)))
2433 if (stl_dummybrd
.brdnr
>= STL_MAXBRDS
)
2435 brdp
= stl_brds
[stl_dummybrd
.brdnr
];
2438 return copy_to_user(arg
, brdp
, sizeof(struct stlbrd
)) ? -EFAULT
: 0;
2441 /*****************************************************************************/
2444 * The "staliomem" device is also required to do some special operations
2445 * on the board and/or ports. In this driver it is mostly used for stats
2449 static long stl_memioctl(struct file
*fp
, unsigned int cmd
, unsigned long arg
)
2452 void __user
*argp
= (void __user
*)arg
;
2454 pr_debug("stl_memioctl(fp=%p,cmd=%x,arg=%lx)\n", fp
, cmd
,arg
);
2456 brdnr
= iminor(fp
->f_dentry
->d_inode
);
2457 if (brdnr
>= STL_MAXBRDS
)
2462 case COM_GETPORTSTATS
:
2463 rc
= stl_getportstats(NULL
, NULL
, argp
);
2465 case COM_CLRPORTSTATS
:
2466 rc
= stl_clrportstats(NULL
, argp
);
2468 case COM_GETBRDSTATS
:
2469 rc
= stl_getbrdstats(argp
);
2472 rc
= stl_getportstruct(argp
);
2475 rc
= stl_getbrdstruct(argp
);
2484 static const struct tty_operations stl_ops
= {
2488 .put_char
= stl_putchar
,
2489 .flush_chars
= stl_flushchars
,
2490 .write_room
= stl_writeroom
,
2491 .chars_in_buffer
= stl_charsinbuffer
,
2493 .set_termios
= stl_settermios
,
2494 .throttle
= stl_throttle
,
2495 .unthrottle
= stl_unthrottle
,
2498 .hangup
= stl_hangup
,
2499 .flush_buffer
= stl_flushbuffer
,
2500 .break_ctl
= stl_breakctl
,
2501 .wait_until_sent
= stl_waituntilsent
,
2502 .send_xchar
= stl_sendxchar
,
2503 .tiocmget
= stl_tiocmget
,
2504 .tiocmset
= stl_tiocmset
,
2505 .proc_fops
= &stl_proc_fops
,
2508 static const struct tty_port_operations stl_port_ops
= {
2509 .carrier_raised
= stl_carrier_raised
,
2510 .dtr_rts
= stl_dtr_rts
,
2511 .activate
= stl_activate
,
2512 .shutdown
= stl_shutdown
,
2515 /*****************************************************************************/
2516 /* CD1400 HARDWARE FUNCTIONS */
2517 /*****************************************************************************/
2520 * These functions get/set/update the registers of the cd1400 UARTs.
2521 * Access to the cd1400 registers is via an address/data io port pair.
2522 * (Maybe should make this inline...)
2525 static int stl_cd1400getreg(struct stlport
*portp
, int regnr
)
2527 outb((regnr
+ portp
->uartaddr
), portp
->ioaddr
);
2528 return inb(portp
->ioaddr
+ EREG_DATA
);
2531 static void stl_cd1400setreg(struct stlport
*portp
, int regnr
, int value
)
2533 outb(regnr
+ portp
->uartaddr
, portp
->ioaddr
);
2534 outb(value
, portp
->ioaddr
+ EREG_DATA
);
2537 static int stl_cd1400updatereg(struct stlport
*portp
, int regnr
, int value
)
2539 outb(regnr
+ portp
->uartaddr
, portp
->ioaddr
);
2540 if (inb(portp
->ioaddr
+ EREG_DATA
) != value
) {
2541 outb(value
, portp
->ioaddr
+ EREG_DATA
);
2547 /*****************************************************************************/
2550 * Inbitialize the UARTs in a panel. We don't care what sort of board
2551 * these ports are on - since the port io registers are almost
2552 * identical when dealing with ports.
2555 static int stl_cd1400panelinit(struct stlbrd
*brdp
, struct stlpanel
*panelp
)
2559 int nrchips
, uartaddr
, ioaddr
;
2560 unsigned long flags
;
2562 pr_debug("stl_panelinit(brdp=%p,panelp=%p)\n", brdp
, panelp
);
2564 spin_lock_irqsave(&brd_lock
, flags
);
2565 BRDENABLE(panelp
->brdnr
, panelp
->pagenr
);
2568 * Check that each chip is present and started up OK.
2571 nrchips
= panelp
->nrports
/ CD1400_PORTS
;
2572 for (i
= 0; i
< nrchips
; i
++) {
2573 if (brdp
->brdtype
== BRD_ECHPCI
) {
2574 outb((panelp
->pagenr
+ (i
>> 1)), brdp
->ioctrl
);
2575 ioaddr
= panelp
->iobase
;
2577 ioaddr
= panelp
->iobase
+ (EREG_BANKSIZE
* (i
>> 1));
2578 uartaddr
= (i
& 0x01) ? 0x080 : 0;
2579 outb((GFRCR
+ uartaddr
), ioaddr
);
2580 outb(0, (ioaddr
+ EREG_DATA
));
2581 outb((CCR
+ uartaddr
), ioaddr
);
2582 outb(CCR_RESETFULL
, (ioaddr
+ EREG_DATA
));
2583 outb(CCR_RESETFULL
, (ioaddr
+ EREG_DATA
));
2584 outb((GFRCR
+ uartaddr
), ioaddr
);
2585 for (j
= 0; j
< CCR_MAXWAIT
; j
++)
2586 if ((gfrcr
= inb(ioaddr
+ EREG_DATA
)) != 0)
2589 if ((j
>= CCR_MAXWAIT
) || (gfrcr
< 0x40) || (gfrcr
> 0x60)) {
2590 printk("STALLION: cd1400 not responding, "
2591 "brd=%d panel=%d chip=%d\n",
2592 panelp
->brdnr
, panelp
->panelnr
, i
);
2595 chipmask
|= (0x1 << i
);
2596 outb((PPR
+ uartaddr
), ioaddr
);
2597 outb(PPR_SCALAR
, (ioaddr
+ EREG_DATA
));
2600 BRDDISABLE(panelp
->brdnr
);
2601 spin_unlock_irqrestore(&brd_lock
, flags
);
2605 /*****************************************************************************/
2608 * Initialize hardware specific port registers.
2611 static void stl_cd1400portinit(struct stlbrd
*brdp
, struct stlpanel
*panelp
, struct stlport
*portp
)
2613 unsigned long flags
;
2614 pr_debug("stl_cd1400portinit(brdp=%p,panelp=%p,portp=%p)\n", brdp
,
2617 if ((brdp
== NULL
) || (panelp
== NULL
) ||
2621 spin_lock_irqsave(&brd_lock
, flags
);
2622 portp
->ioaddr
= panelp
->iobase
+ (((brdp
->brdtype
== BRD_ECHPCI
) ||
2623 (portp
->portnr
< 8)) ? 0 : EREG_BANKSIZE
);
2624 portp
->uartaddr
= (portp
->portnr
& 0x04) << 5;
2625 portp
->pagenr
= panelp
->pagenr
+ (portp
->portnr
>> 3);
2627 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
2628 stl_cd1400setreg(portp
, CAR
, (portp
->portnr
& 0x03));
2629 stl_cd1400setreg(portp
, LIVR
, (portp
->portnr
<< 3));
2630 portp
->hwid
= stl_cd1400getreg(portp
, GFRCR
);
2631 BRDDISABLE(portp
->brdnr
);
2632 spin_unlock_irqrestore(&brd_lock
, flags
);
2635 /*****************************************************************************/
2638 * Wait for the command register to be ready. We will poll this,
2639 * since it won't usually take too long to be ready.
2642 static void stl_cd1400ccrwait(struct stlport
*portp
)
2646 for (i
= 0; i
< CCR_MAXWAIT
; i
++)
2647 if (stl_cd1400getreg(portp
, CCR
) == 0)
2650 printk("STALLION: cd1400 not responding, port=%d panel=%d brd=%d\n",
2651 portp
->portnr
, portp
->panelnr
, portp
->brdnr
);
2654 /*****************************************************************************/
2657 * Set up the cd1400 registers for a port based on the termios port
2661 static void stl_cd1400setport(struct stlport
*portp
, struct ktermios
*tiosp
)
2663 struct stlbrd
*brdp
;
2664 unsigned long flags
;
2665 unsigned int clkdiv
, baudrate
;
2666 unsigned char cor1
, cor2
, cor3
;
2667 unsigned char cor4
, cor5
, ccr
;
2668 unsigned char srer
, sreron
, sreroff
;
2669 unsigned char mcor1
, mcor2
, rtpr
;
2670 unsigned char clk
, div
;
2686 brdp
= stl_brds
[portp
->brdnr
];
2691 * Set up the RX char ignore mask with those RX error types we
2692 * can ignore. We can get the cd1400 to help us out a little here,
2693 * it will ignore parity errors and breaks for us.
2695 portp
->rxignoremsk
= 0;
2696 if (tiosp
->c_iflag
& IGNPAR
) {
2697 portp
->rxignoremsk
|= (ST_PARITY
| ST_FRAMING
| ST_OVERRUN
);
2698 cor1
|= COR1_PARIGNORE
;
2700 if (tiosp
->c_iflag
& IGNBRK
) {
2701 portp
->rxignoremsk
|= ST_BREAK
;
2702 cor4
|= COR4_IGNBRK
;
2705 portp
->rxmarkmsk
= ST_OVERRUN
;
2706 if (tiosp
->c_iflag
& (INPCK
| PARMRK
))
2707 portp
->rxmarkmsk
|= (ST_PARITY
| ST_FRAMING
);
2708 if (tiosp
->c_iflag
& BRKINT
)
2709 portp
->rxmarkmsk
|= ST_BREAK
;
2712 * Go through the char size, parity and stop bits and set all the
2713 * option register appropriately.
2715 switch (tiosp
->c_cflag
& CSIZE
) {
2730 if (tiosp
->c_cflag
& CSTOPB
)
2735 if (tiosp
->c_cflag
& PARENB
) {
2736 if (tiosp
->c_cflag
& PARODD
)
2737 cor1
|= (COR1_PARENB
| COR1_PARODD
);
2739 cor1
|= (COR1_PARENB
| COR1_PAREVEN
);
2741 cor1
|= COR1_PARNONE
;
2745 * Set the RX FIFO threshold at 6 chars. This gives a bit of breathing
2746 * space for hardware flow control and the like. This should be set to
2747 * VMIN. Also here we will set the RX data timeout to 10ms - this should
2748 * really be based on VTIME.
2750 cor3
|= FIFO_RXTHRESHOLD
;
2754 * Calculate the baud rate timers. For now we will just assume that
2755 * the input and output baud are the same. Could have used a baud
2756 * table here, but this way we can generate virtually any baud rate
2759 baudrate
= tiosp
->c_cflag
& CBAUD
;
2760 if (baudrate
& CBAUDEX
) {
2761 baudrate
&= ~CBAUDEX
;
2762 if ((baudrate
< 1) || (baudrate
> 4))
2763 tiosp
->c_cflag
&= ~CBAUDEX
;
2767 baudrate
= stl_baudrates
[baudrate
];
2768 if ((tiosp
->c_cflag
& CBAUD
) == B38400
) {
2769 if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_HI
)
2771 else if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_VHI
)
2773 else if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_SHI
)
2775 else if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_WARP
)
2777 else if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_CUST
)
2778 baudrate
= (portp
->baud_base
/ portp
->custom_divisor
);
2780 if (baudrate
> STL_CD1400MAXBAUD
)
2781 baudrate
= STL_CD1400MAXBAUD
;
2784 for (clk
= 0; clk
< CD1400_NUMCLKS
; clk
++) {
2785 clkdiv
= (portp
->clk
/ stl_cd1400clkdivs
[clk
]) / baudrate
;
2789 div
= (unsigned char) clkdiv
;
2793 * Check what form of modem signaling is required and set it up.
2795 if ((tiosp
->c_cflag
& CLOCAL
) == 0) {
2798 sreron
|= SRER_MODEM
;
2799 portp
->port
.flags
|= ASYNC_CHECK_CD
;
2801 portp
->port
.flags
&= ~ASYNC_CHECK_CD
;
2804 * Setup cd1400 enhanced modes if we can. In particular we want to
2805 * handle as much of the flow control as possible automatically. As
2806 * well as saving a few CPU cycles it will also greatly improve flow
2807 * control reliability.
2809 if (tiosp
->c_iflag
& IXON
) {
2812 if (tiosp
->c_iflag
& IXANY
)
2816 if (tiosp
->c_cflag
& CRTSCTS
) {
2818 mcor1
|= FIFO_RTSTHRESHOLD
;
2822 * All cd1400 register values calculated so go through and set
2826 pr_debug("SETPORT: portnr=%d panelnr=%d brdnr=%d\n",
2827 portp
->portnr
, portp
->panelnr
, portp
->brdnr
);
2828 pr_debug(" cor1=%x cor2=%x cor3=%x cor4=%x cor5=%x\n",
2829 cor1
, cor2
, cor3
, cor4
, cor5
);
2830 pr_debug(" mcor1=%x mcor2=%x rtpr=%x sreron=%x sreroff=%x\n",
2831 mcor1
, mcor2
, rtpr
, sreron
, sreroff
);
2832 pr_debug(" tcor=%x tbpr=%x rcor=%x rbpr=%x\n", clk
, div
, clk
, div
);
2833 pr_debug(" schr1=%x schr2=%x schr3=%x schr4=%x\n",
2834 tiosp
->c_cc
[VSTART
], tiosp
->c_cc
[VSTOP
],
2835 tiosp
->c_cc
[VSTART
], tiosp
->c_cc
[VSTOP
]);
2837 spin_lock_irqsave(&brd_lock
, flags
);
2838 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
2839 stl_cd1400setreg(portp
, CAR
, (portp
->portnr
& 0x3));
2840 srer
= stl_cd1400getreg(portp
, SRER
);
2841 stl_cd1400setreg(portp
, SRER
, 0);
2842 if (stl_cd1400updatereg(portp
, COR1
, cor1
))
2844 if (stl_cd1400updatereg(portp
, COR2
, cor2
))
2846 if (stl_cd1400updatereg(portp
, COR3
, cor3
))
2849 stl_cd1400ccrwait(portp
);
2850 stl_cd1400setreg(portp
, CCR
, CCR_CORCHANGE
);
2852 stl_cd1400setreg(portp
, COR4
, cor4
);
2853 stl_cd1400setreg(portp
, COR5
, cor5
);
2854 stl_cd1400setreg(portp
, MCOR1
, mcor1
);
2855 stl_cd1400setreg(portp
, MCOR2
, mcor2
);
2857 stl_cd1400setreg(portp
, TCOR
, clk
);
2858 stl_cd1400setreg(portp
, TBPR
, div
);
2859 stl_cd1400setreg(portp
, RCOR
, clk
);
2860 stl_cd1400setreg(portp
, RBPR
, div
);
2862 stl_cd1400setreg(portp
, SCHR1
, tiosp
->c_cc
[VSTART
]);
2863 stl_cd1400setreg(portp
, SCHR2
, tiosp
->c_cc
[VSTOP
]);
2864 stl_cd1400setreg(portp
, SCHR3
, tiosp
->c_cc
[VSTART
]);
2865 stl_cd1400setreg(portp
, SCHR4
, tiosp
->c_cc
[VSTOP
]);
2866 stl_cd1400setreg(portp
, RTPR
, rtpr
);
2867 mcor1
= stl_cd1400getreg(portp
, MSVR1
);
2868 if (mcor1
& MSVR1_DCD
)
2869 portp
->sigs
|= TIOCM_CD
;
2871 portp
->sigs
&= ~TIOCM_CD
;
2872 stl_cd1400setreg(portp
, SRER
, ((srer
& ~sreroff
) | sreron
));
2873 BRDDISABLE(portp
->brdnr
);
2874 spin_unlock_irqrestore(&brd_lock
, flags
);
2877 /*****************************************************************************/
2880 * Set the state of the DTR and RTS signals.
2883 static void stl_cd1400setsignals(struct stlport
*portp
, int dtr
, int rts
)
2885 unsigned char msvr1
, msvr2
;
2886 unsigned long flags
;
2888 pr_debug("stl_cd1400setsignals(portp=%p,dtr=%d,rts=%d)\n",
2898 spin_lock_irqsave(&brd_lock
, flags
);
2899 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
2900 stl_cd1400setreg(portp
, CAR
, (portp
->portnr
& 0x03));
2902 stl_cd1400setreg(portp
, MSVR2
, msvr2
);
2904 stl_cd1400setreg(portp
, MSVR1
, msvr1
);
2905 BRDDISABLE(portp
->brdnr
);
2906 spin_unlock_irqrestore(&brd_lock
, flags
);
2909 /*****************************************************************************/
2912 * Return the state of the signals.
2915 static int stl_cd1400getsignals(struct stlport
*portp
)
2917 unsigned char msvr1
, msvr2
;
2918 unsigned long flags
;
2921 pr_debug("stl_cd1400getsignals(portp=%p)\n", portp
);
2923 spin_lock_irqsave(&brd_lock
, flags
);
2924 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
2925 stl_cd1400setreg(portp
, CAR
, (portp
->portnr
& 0x03));
2926 msvr1
= stl_cd1400getreg(portp
, MSVR1
);
2927 msvr2
= stl_cd1400getreg(portp
, MSVR2
);
2928 BRDDISABLE(portp
->brdnr
);
2929 spin_unlock_irqrestore(&brd_lock
, flags
);
2932 sigs
|= (msvr1
& MSVR1_DCD
) ? TIOCM_CD
: 0;
2933 sigs
|= (msvr1
& MSVR1_CTS
) ? TIOCM_CTS
: 0;
2934 sigs
|= (msvr1
& MSVR1_DTR
) ? TIOCM_DTR
: 0;
2935 sigs
|= (msvr2
& MSVR2_RTS
) ? TIOCM_RTS
: 0;
2937 sigs
|= (msvr1
& MSVR1_RI
) ? TIOCM_RI
: 0;
2938 sigs
|= (msvr1
& MSVR1_DSR
) ? TIOCM_DSR
: 0;
2945 /*****************************************************************************/
2948 * Enable/Disable the Transmitter and/or Receiver.
2951 static void stl_cd1400enablerxtx(struct stlport
*portp
, int rx
, int tx
)
2954 unsigned long flags
;
2956 pr_debug("stl_cd1400enablerxtx(portp=%p,rx=%d,tx=%d)\n", portp
, rx
, tx
);
2961 ccr
|= CCR_TXDISABLE
;
2963 ccr
|= CCR_TXENABLE
;
2965 ccr
|= CCR_RXDISABLE
;
2967 ccr
|= CCR_RXENABLE
;
2969 spin_lock_irqsave(&brd_lock
, flags
);
2970 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
2971 stl_cd1400setreg(portp
, CAR
, (portp
->portnr
& 0x03));
2972 stl_cd1400ccrwait(portp
);
2973 stl_cd1400setreg(portp
, CCR
, ccr
);
2974 stl_cd1400ccrwait(portp
);
2975 BRDDISABLE(portp
->brdnr
);
2976 spin_unlock_irqrestore(&brd_lock
, flags
);
2979 /*****************************************************************************/
2982 * Start/stop the Transmitter and/or Receiver.
2985 static void stl_cd1400startrxtx(struct stlport
*portp
, int rx
, int tx
)
2987 unsigned char sreron
, sreroff
;
2988 unsigned long flags
;
2990 pr_debug("stl_cd1400startrxtx(portp=%p,rx=%d,tx=%d)\n", portp
, rx
, tx
);
2995 sreroff
|= (SRER_TXDATA
| SRER_TXEMPTY
);
2997 sreron
|= SRER_TXDATA
;
2999 sreron
|= SRER_TXEMPTY
;
3001 sreroff
|= SRER_RXDATA
;
3003 sreron
|= SRER_RXDATA
;
3005 spin_lock_irqsave(&brd_lock
, flags
);
3006 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
3007 stl_cd1400setreg(portp
, CAR
, (portp
->portnr
& 0x03));
3008 stl_cd1400setreg(portp
, SRER
,
3009 ((stl_cd1400getreg(portp
, SRER
) & ~sreroff
) | sreron
));
3010 BRDDISABLE(portp
->brdnr
);
3012 set_bit(ASYI_TXBUSY
, &portp
->istate
);
3013 spin_unlock_irqrestore(&brd_lock
, flags
);
3016 /*****************************************************************************/
3019 * Disable all interrupts from this port.
3022 static void stl_cd1400disableintrs(struct stlport
*portp
)
3024 unsigned long flags
;
3026 pr_debug("stl_cd1400disableintrs(portp=%p)\n", portp
);
3028 spin_lock_irqsave(&brd_lock
, flags
);
3029 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
3030 stl_cd1400setreg(portp
, CAR
, (portp
->portnr
& 0x03));
3031 stl_cd1400setreg(portp
, SRER
, 0);
3032 BRDDISABLE(portp
->brdnr
);
3033 spin_unlock_irqrestore(&brd_lock
, flags
);
3036 /*****************************************************************************/
3038 static void stl_cd1400sendbreak(struct stlport
*portp
, int len
)
3040 unsigned long flags
;
3042 pr_debug("stl_cd1400sendbreak(portp=%p,len=%d)\n", portp
, len
);
3044 spin_lock_irqsave(&brd_lock
, flags
);
3045 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
3046 stl_cd1400setreg(portp
, CAR
, (portp
->portnr
& 0x03));
3047 stl_cd1400setreg(portp
, SRER
,
3048 ((stl_cd1400getreg(portp
, SRER
) & ~SRER_TXDATA
) |
3050 BRDDISABLE(portp
->brdnr
);
3051 portp
->brklen
= len
;
3053 portp
->stats
.txbreaks
++;
3054 spin_unlock_irqrestore(&brd_lock
, flags
);
3057 /*****************************************************************************/
3060 * Take flow control actions...
3063 static void stl_cd1400flowctrl(struct stlport
*portp
, int state
)
3065 struct tty_struct
*tty
;
3066 unsigned long flags
;
3068 pr_debug("stl_cd1400flowctrl(portp=%p,state=%x)\n", portp
, state
);
3072 tty
= tty_port_tty_get(&portp
->port
);
3076 spin_lock_irqsave(&brd_lock
, flags
);
3077 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
3078 stl_cd1400setreg(portp
, CAR
, (portp
->portnr
& 0x03));
3081 if (tty
->termios
->c_iflag
& IXOFF
) {
3082 stl_cd1400ccrwait(portp
);
3083 stl_cd1400setreg(portp
, CCR
, CCR_SENDSCHR1
);
3084 portp
->stats
.rxxon
++;
3085 stl_cd1400ccrwait(portp
);
3088 * Question: should we return RTS to what it was before? It may
3089 * have been set by an ioctl... Suppose not, since if you have
3090 * hardware flow control set then it is pretty silly to go and
3091 * set the RTS line by hand.
3093 if (tty
->termios
->c_cflag
& CRTSCTS
) {
3094 stl_cd1400setreg(portp
, MCOR1
,
3095 (stl_cd1400getreg(portp
, MCOR1
) |
3096 FIFO_RTSTHRESHOLD
));
3097 stl_cd1400setreg(portp
, MSVR2
, MSVR2_RTS
);
3098 portp
->stats
.rxrtson
++;
3101 if (tty
->termios
->c_iflag
& IXOFF
) {
3102 stl_cd1400ccrwait(portp
);
3103 stl_cd1400setreg(portp
, CCR
, CCR_SENDSCHR2
);
3104 portp
->stats
.rxxoff
++;
3105 stl_cd1400ccrwait(portp
);
3107 if (tty
->termios
->c_cflag
& CRTSCTS
) {
3108 stl_cd1400setreg(portp
, MCOR1
,
3109 (stl_cd1400getreg(portp
, MCOR1
) & 0xf0));
3110 stl_cd1400setreg(portp
, MSVR2
, 0);
3111 portp
->stats
.rxrtsoff
++;
3115 BRDDISABLE(portp
->brdnr
);
3116 spin_unlock_irqrestore(&brd_lock
, flags
);
3120 /*****************************************************************************/
3123 * Send a flow control character...
3126 static void stl_cd1400sendflow(struct stlport
*portp
, int state
)
3128 struct tty_struct
*tty
;
3129 unsigned long flags
;
3131 pr_debug("stl_cd1400sendflow(portp=%p,state=%x)\n", portp
, state
);
3135 tty
= tty_port_tty_get(&portp
->port
);
3139 spin_lock_irqsave(&brd_lock
, flags
);
3140 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
3141 stl_cd1400setreg(portp
, CAR
, (portp
->portnr
& 0x03));
3143 stl_cd1400ccrwait(portp
);
3144 stl_cd1400setreg(portp
, CCR
, CCR_SENDSCHR1
);
3145 portp
->stats
.rxxon
++;
3146 stl_cd1400ccrwait(portp
);
3148 stl_cd1400ccrwait(portp
);
3149 stl_cd1400setreg(portp
, CCR
, CCR_SENDSCHR2
);
3150 portp
->stats
.rxxoff
++;
3151 stl_cd1400ccrwait(portp
);
3153 BRDDISABLE(portp
->brdnr
);
3154 spin_unlock_irqrestore(&brd_lock
, flags
);
3158 /*****************************************************************************/
3160 static void stl_cd1400flush(struct stlport
*portp
)
3162 unsigned long flags
;
3164 pr_debug("stl_cd1400flush(portp=%p)\n", portp
);
3169 spin_lock_irqsave(&brd_lock
, flags
);
3170 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
3171 stl_cd1400setreg(portp
, CAR
, (portp
->portnr
& 0x03));
3172 stl_cd1400ccrwait(portp
);
3173 stl_cd1400setreg(portp
, CCR
, CCR_TXFLUSHFIFO
);
3174 stl_cd1400ccrwait(portp
);
3175 portp
->tx
.tail
= portp
->tx
.head
;
3176 BRDDISABLE(portp
->brdnr
);
3177 spin_unlock_irqrestore(&brd_lock
, flags
);
3180 /*****************************************************************************/
3183 * Return the current state of data flow on this port. This is only
3184 * really interesting when determining if data has fully completed
3185 * transmission or not... This is easy for the cd1400, it accurately
3186 * maintains the busy port flag.
3189 static int stl_cd1400datastate(struct stlport
*portp
)
3191 pr_debug("stl_cd1400datastate(portp=%p)\n", portp
);
3196 return test_bit(ASYI_TXBUSY
, &portp
->istate
) ? 1 : 0;
3199 /*****************************************************************************/
3202 * Interrupt service routine for cd1400 EasyIO boards.
3205 static void stl_cd1400eiointr(struct stlpanel
*panelp
, unsigned int iobase
)
3207 unsigned char svrtype
;
3209 pr_debug("stl_cd1400eiointr(panelp=%p,iobase=%x)\n", panelp
, iobase
);
3211 spin_lock(&brd_lock
);
3213 svrtype
= inb(iobase
+ EREG_DATA
);
3214 if (panelp
->nrports
> 4) {
3215 outb((SVRR
+ 0x80), iobase
);
3216 svrtype
|= inb(iobase
+ EREG_DATA
);
3219 if (svrtype
& SVRR_RX
)
3220 stl_cd1400rxisr(panelp
, iobase
);
3221 else if (svrtype
& SVRR_TX
)
3222 stl_cd1400txisr(panelp
, iobase
);
3223 else if (svrtype
& SVRR_MDM
)
3224 stl_cd1400mdmisr(panelp
, iobase
);
3226 spin_unlock(&brd_lock
);
3229 /*****************************************************************************/
3232 * Interrupt service routine for cd1400 panels.
3235 static void stl_cd1400echintr(struct stlpanel
*panelp
, unsigned int iobase
)
3237 unsigned char svrtype
;
3239 pr_debug("stl_cd1400echintr(panelp=%p,iobase=%x)\n", panelp
, iobase
);
3242 svrtype
= inb(iobase
+ EREG_DATA
);
3243 outb((SVRR
+ 0x80), iobase
);
3244 svrtype
|= inb(iobase
+ EREG_DATA
);
3245 if (svrtype
& SVRR_RX
)
3246 stl_cd1400rxisr(panelp
, iobase
);
3247 else if (svrtype
& SVRR_TX
)
3248 stl_cd1400txisr(panelp
, iobase
);
3249 else if (svrtype
& SVRR_MDM
)
3250 stl_cd1400mdmisr(panelp
, iobase
);
3254 /*****************************************************************************/
3257 * Unfortunately we need to handle breaks in the TX data stream, since
3258 * this is the only way to generate them on the cd1400.
3261 static int stl_cd1400breakisr(struct stlport
*portp
, int ioaddr
)
3263 if (portp
->brklen
== 1) {
3264 outb((COR2
+ portp
->uartaddr
), ioaddr
);
3265 outb((inb(ioaddr
+ EREG_DATA
) | COR2_ETC
),
3266 (ioaddr
+ EREG_DATA
));
3267 outb((TDR
+ portp
->uartaddr
), ioaddr
);
3268 outb(ETC_CMD
, (ioaddr
+ EREG_DATA
));
3269 outb(ETC_STARTBREAK
, (ioaddr
+ EREG_DATA
));
3270 outb((SRER
+ portp
->uartaddr
), ioaddr
);
3271 outb((inb(ioaddr
+ EREG_DATA
) & ~(SRER_TXDATA
| SRER_TXEMPTY
)),
3272 (ioaddr
+ EREG_DATA
));
3274 } else if (portp
->brklen
> 1) {
3275 outb((TDR
+ portp
->uartaddr
), ioaddr
);
3276 outb(ETC_CMD
, (ioaddr
+ EREG_DATA
));
3277 outb(ETC_STOPBREAK
, (ioaddr
+ EREG_DATA
));
3281 outb((COR2
+ portp
->uartaddr
), ioaddr
);
3282 outb((inb(ioaddr
+ EREG_DATA
) & ~COR2_ETC
),
3283 (ioaddr
+ EREG_DATA
));
3289 /*****************************************************************************/
3292 * Transmit interrupt handler. This has gotta be fast! Handling TX
3293 * chars is pretty simple, stuff as many as possible from the TX buffer
3294 * into the cd1400 FIFO. Must also handle TX breaks here, since they
3295 * are embedded as commands in the data stream. Oh no, had to use a goto!
3296 * This could be optimized more, will do when I get time...
3297 * In practice it is possible that interrupts are enabled but that the
3298 * port has been hung up. Need to handle not having any TX buffer here,
3299 * this is done by using the side effect that head and tail will also
3300 * be NULL if the buffer has been freed.
3303 static void stl_cd1400txisr(struct stlpanel
*panelp
, int ioaddr
)
3305 struct stlport
*portp
;
3308 unsigned char ioack
, srer
;
3309 struct tty_struct
*tty
;
3311 pr_debug("stl_cd1400txisr(panelp=%p,ioaddr=%x)\n", panelp
, ioaddr
);
3313 ioack
= inb(ioaddr
+ EREG_TXACK
);
3314 if (((ioack
& panelp
->ackmask
) != 0) ||
3315 ((ioack
& ACK_TYPMASK
) != ACK_TYPTX
)) {
3316 printk("STALLION: bad TX interrupt ack value=%x\n", ioack
);
3319 portp
= panelp
->ports
[(ioack
>> 3)];
3322 * Unfortunately we need to handle breaks in the data stream, since
3323 * this is the only way to generate them on the cd1400. Do it now if
3324 * a break is to be sent.
3326 if (portp
->brklen
!= 0)
3327 if (stl_cd1400breakisr(portp
, ioaddr
))
3330 head
= portp
->tx
.head
;
3331 tail
= portp
->tx
.tail
;
3332 len
= (head
>= tail
) ? (head
- tail
) : (STL_TXBUFSIZE
- (tail
- head
));
3333 if ((len
== 0) || ((len
< STL_TXBUFLOW
) &&
3334 (test_bit(ASYI_TXLOW
, &portp
->istate
) == 0))) {
3335 set_bit(ASYI_TXLOW
, &portp
->istate
);
3336 tty
= tty_port_tty_get(&portp
->port
);
3344 outb((SRER
+ portp
->uartaddr
), ioaddr
);
3345 srer
= inb(ioaddr
+ EREG_DATA
);
3346 if (srer
& SRER_TXDATA
) {
3347 srer
= (srer
& ~SRER_TXDATA
) | SRER_TXEMPTY
;
3349 srer
&= ~(SRER_TXDATA
| SRER_TXEMPTY
);
3350 clear_bit(ASYI_TXBUSY
, &portp
->istate
);
3352 outb(srer
, (ioaddr
+ EREG_DATA
));
3354 len
= min(len
, CD1400_TXFIFOSIZE
);
3355 portp
->stats
.txtotal
+= len
;
3356 stlen
= min_t(unsigned int, len
,
3357 (portp
->tx
.buf
+ STL_TXBUFSIZE
) - tail
);
3358 outb((TDR
+ portp
->uartaddr
), ioaddr
);
3359 outsb((ioaddr
+ EREG_DATA
), tail
, stlen
);
3362 if (tail
>= (portp
->tx
.buf
+ STL_TXBUFSIZE
))
3363 tail
= portp
->tx
.buf
;
3365 outsb((ioaddr
+ EREG_DATA
), tail
, len
);
3368 portp
->tx
.tail
= tail
;
3372 outb((EOSRR
+ portp
->uartaddr
), ioaddr
);
3373 outb(0, (ioaddr
+ EREG_DATA
));
3376 /*****************************************************************************/
3379 * Receive character interrupt handler. Determine if we have good chars
3380 * or bad chars and then process appropriately. Good chars are easy
3381 * just shove the lot into the RX buffer and set all status byte to 0.
3382 * If a bad RX char then process as required. This routine needs to be
3383 * fast! In practice it is possible that we get an interrupt on a port
3384 * that is closed. This can happen on hangups - since they completely
3385 * shutdown a port not in user context. Need to handle this case.
3388 static void stl_cd1400rxisr(struct stlpanel
*panelp
, int ioaddr
)
3390 struct stlport
*portp
;
3391 struct tty_struct
*tty
;
3392 unsigned int ioack
, len
, buflen
;
3393 unsigned char status
;
3396 pr_debug("stl_cd1400rxisr(panelp=%p,ioaddr=%x)\n", panelp
, ioaddr
);
3398 ioack
= inb(ioaddr
+ EREG_RXACK
);
3399 if ((ioack
& panelp
->ackmask
) != 0) {
3400 printk("STALLION: bad RX interrupt ack value=%x\n", ioack
);
3403 portp
= panelp
->ports
[(ioack
>> 3)];
3404 tty
= tty_port_tty_get(&portp
->port
);
3406 if ((ioack
& ACK_TYPMASK
) == ACK_TYPRXGOOD
) {
3407 outb((RDCR
+ portp
->uartaddr
), ioaddr
);
3408 len
= inb(ioaddr
+ EREG_DATA
);
3409 if (tty
== NULL
|| (buflen
= tty_buffer_request_room(tty
, len
)) == 0) {
3410 len
= min_t(unsigned int, len
, sizeof(stl_unwanted
));
3411 outb((RDSR
+ portp
->uartaddr
), ioaddr
);
3412 insb((ioaddr
+ EREG_DATA
), &stl_unwanted
[0], len
);
3413 portp
->stats
.rxlost
+= len
;
3414 portp
->stats
.rxtotal
+= len
;
3416 len
= min(len
, buflen
);
3419 outb((RDSR
+ portp
->uartaddr
), ioaddr
);
3420 tty_prepare_flip_string(tty
, &ptr
, len
);
3421 insb((ioaddr
+ EREG_DATA
), ptr
, len
);
3422 tty_schedule_flip(tty
);
3423 portp
->stats
.rxtotal
+= len
;
3426 } else if ((ioack
& ACK_TYPMASK
) == ACK_TYPRXBAD
) {
3427 outb((RDSR
+ portp
->uartaddr
), ioaddr
);
3428 status
= inb(ioaddr
+ EREG_DATA
);
3429 ch
= inb(ioaddr
+ EREG_DATA
);
3430 if (status
& ST_PARITY
)
3431 portp
->stats
.rxparity
++;
3432 if (status
& ST_FRAMING
)
3433 portp
->stats
.rxframing
++;
3434 if (status
& ST_OVERRUN
)
3435 portp
->stats
.rxoverrun
++;
3436 if (status
& ST_BREAK
)
3437 portp
->stats
.rxbreaks
++;
3438 if (status
& ST_SCHARMASK
) {
3439 if ((status
& ST_SCHARMASK
) == ST_SCHAR1
)
3440 portp
->stats
.txxon
++;
3441 if ((status
& ST_SCHARMASK
) == ST_SCHAR2
)
3442 portp
->stats
.txxoff
++;
3445 if (tty
!= NULL
&& (portp
->rxignoremsk
& status
) == 0) {
3446 if (portp
->rxmarkmsk
& status
) {
3447 if (status
& ST_BREAK
) {
3449 if (portp
->port
.flags
& ASYNC_SAK
) {
3451 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
3453 } else if (status
& ST_PARITY
)
3454 status
= TTY_PARITY
;
3455 else if (status
& ST_FRAMING
)
3457 else if(status
& ST_OVERRUN
)
3458 status
= TTY_OVERRUN
;
3463 tty_insert_flip_char(tty
, ch
, status
);
3464 tty_schedule_flip(tty
);
3467 printk("STALLION: bad RX interrupt ack value=%x\n", ioack
);
3474 outb((EOSRR
+ portp
->uartaddr
), ioaddr
);
3475 outb(0, (ioaddr
+ EREG_DATA
));
3478 /*****************************************************************************/
3481 * Modem interrupt handler. The is called when the modem signal line
3482 * (DCD) has changed state. Leave most of the work to the off-level
3483 * processing routine.
3486 static void stl_cd1400mdmisr(struct stlpanel
*panelp
, int ioaddr
)
3488 struct stlport
*portp
;
3492 pr_debug("stl_cd1400mdmisr(panelp=%p)\n", panelp
);
3494 ioack
= inb(ioaddr
+ EREG_MDACK
);
3495 if (((ioack
& panelp
->ackmask
) != 0) ||
3496 ((ioack
& ACK_TYPMASK
) != ACK_TYPMDM
)) {
3497 printk("STALLION: bad MODEM interrupt ack value=%x\n", ioack
);
3500 portp
= panelp
->ports
[(ioack
>> 3)];
3502 outb((MISR
+ portp
->uartaddr
), ioaddr
);
3503 misr
= inb(ioaddr
+ EREG_DATA
);
3504 if (misr
& MISR_DCD
) {
3505 stl_cd_change(portp
);
3506 portp
->stats
.modem
++;
3509 outb((EOSRR
+ portp
->uartaddr
), ioaddr
);
3510 outb(0, (ioaddr
+ EREG_DATA
));
3513 /*****************************************************************************/
3514 /* SC26198 HARDWARE FUNCTIONS */
3515 /*****************************************************************************/
3518 * These functions get/set/update the registers of the sc26198 UARTs.
3519 * Access to the sc26198 registers is via an address/data io port pair.
3520 * (Maybe should make this inline...)
3523 static int stl_sc26198getreg(struct stlport
*portp
, int regnr
)
3525 outb((regnr
| portp
->uartaddr
), (portp
->ioaddr
+ XP_ADDR
));
3526 return inb(portp
->ioaddr
+ XP_DATA
);
3529 static void stl_sc26198setreg(struct stlport
*portp
, int regnr
, int value
)
3531 outb((regnr
| portp
->uartaddr
), (portp
->ioaddr
+ XP_ADDR
));
3532 outb(value
, (portp
->ioaddr
+ XP_DATA
));
3535 static int stl_sc26198updatereg(struct stlport
*portp
, int regnr
, int value
)
3537 outb((regnr
| portp
->uartaddr
), (portp
->ioaddr
+ XP_ADDR
));
3538 if (inb(portp
->ioaddr
+ XP_DATA
) != value
) {
3539 outb(value
, (portp
->ioaddr
+ XP_DATA
));
3545 /*****************************************************************************/
3548 * Functions to get and set the sc26198 global registers.
3551 static int stl_sc26198getglobreg(struct stlport
*portp
, int regnr
)
3553 outb(regnr
, (portp
->ioaddr
+ XP_ADDR
));
3554 return inb(portp
->ioaddr
+ XP_DATA
);
3558 static void stl_sc26198setglobreg(struct stlport
*portp
, int regnr
, int value
)
3560 outb(regnr
, (portp
->ioaddr
+ XP_ADDR
));
3561 outb(value
, (portp
->ioaddr
+ XP_DATA
));
3565 /*****************************************************************************/
3568 * Inbitialize the UARTs in a panel. We don't care what sort of board
3569 * these ports are on - since the port io registers are almost
3570 * identical when dealing with ports.
3573 static int stl_sc26198panelinit(struct stlbrd
*brdp
, struct stlpanel
*panelp
)
3576 int nrchips
, ioaddr
;
3578 pr_debug("stl_sc26198panelinit(brdp=%p,panelp=%p)\n", brdp
, panelp
);
3580 BRDENABLE(panelp
->brdnr
, panelp
->pagenr
);
3583 * Check that each chip is present and started up OK.
3586 nrchips
= (panelp
->nrports
+ 4) / SC26198_PORTS
;
3587 if (brdp
->brdtype
== BRD_ECHPCI
)
3588 outb(panelp
->pagenr
, brdp
->ioctrl
);
3590 for (i
= 0; i
< nrchips
; i
++) {
3591 ioaddr
= panelp
->iobase
+ (i
* 4);
3592 outb(SCCR
, (ioaddr
+ XP_ADDR
));
3593 outb(CR_RESETALL
, (ioaddr
+ XP_DATA
));
3594 outb(TSTR
, (ioaddr
+ XP_ADDR
));
3595 if (inb(ioaddr
+ XP_DATA
) != 0) {
3596 printk("STALLION: sc26198 not responding, "
3597 "brd=%d panel=%d chip=%d\n",
3598 panelp
->brdnr
, panelp
->panelnr
, i
);
3601 chipmask
|= (0x1 << i
);
3602 outb(GCCR
, (ioaddr
+ XP_ADDR
));
3603 outb(GCCR_IVRTYPCHANACK
, (ioaddr
+ XP_DATA
));
3604 outb(WDTRCR
, (ioaddr
+ XP_ADDR
));
3605 outb(0xff, (ioaddr
+ XP_DATA
));
3608 BRDDISABLE(panelp
->brdnr
);
3612 /*****************************************************************************/
3615 * Initialize hardware specific port registers.
3618 static void stl_sc26198portinit(struct stlbrd
*brdp
, struct stlpanel
*panelp
, struct stlport
*portp
)
3620 pr_debug("stl_sc26198portinit(brdp=%p,panelp=%p,portp=%p)\n", brdp
,
3623 if ((brdp
== NULL
) || (panelp
== NULL
) ||
3627 portp
->ioaddr
= panelp
->iobase
+ ((portp
->portnr
< 8) ? 0 : 4);
3628 portp
->uartaddr
= (portp
->portnr
& 0x07) << 4;
3629 portp
->pagenr
= panelp
->pagenr
;
3632 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
3633 stl_sc26198setreg(portp
, IOPCR
, IOPCR_SETSIGS
);
3634 BRDDISABLE(portp
->brdnr
);
3637 /*****************************************************************************/
3640 * Set up the sc26198 registers for a port based on the termios port
3644 static void stl_sc26198setport(struct stlport
*portp
, struct ktermios
*tiosp
)
3646 struct stlbrd
*brdp
;
3647 unsigned long flags
;
3648 unsigned int baudrate
;
3649 unsigned char mr0
, mr1
, mr2
, clk
;
3650 unsigned char imron
, imroff
, iopr
, ipr
;
3660 brdp
= stl_brds
[portp
->brdnr
];
3665 * Set up the RX char ignore mask with those RX error types we
3668 portp
->rxignoremsk
= 0;
3669 if (tiosp
->c_iflag
& IGNPAR
)
3670 portp
->rxignoremsk
|= (SR_RXPARITY
| SR_RXFRAMING
|
3672 if (tiosp
->c_iflag
& IGNBRK
)
3673 portp
->rxignoremsk
|= SR_RXBREAK
;
3675 portp
->rxmarkmsk
= SR_RXOVERRUN
;
3676 if (tiosp
->c_iflag
& (INPCK
| PARMRK
))
3677 portp
->rxmarkmsk
|= (SR_RXPARITY
| SR_RXFRAMING
);
3678 if (tiosp
->c_iflag
& BRKINT
)
3679 portp
->rxmarkmsk
|= SR_RXBREAK
;
3682 * Go through the char size, parity and stop bits and set all the
3683 * option register appropriately.
3685 switch (tiosp
->c_cflag
& CSIZE
) {
3700 if (tiosp
->c_cflag
& CSTOPB
)
3705 if (tiosp
->c_cflag
& PARENB
) {
3706 if (tiosp
->c_cflag
& PARODD
)
3707 mr1
|= (MR1_PARENB
| MR1_PARODD
);
3709 mr1
|= (MR1_PARENB
| MR1_PAREVEN
);
3713 mr1
|= MR1_ERRBLOCK
;
3716 * Set the RX FIFO threshold at 8 chars. This gives a bit of breathing
3717 * space for hardware flow control and the like. This should be set to
3720 mr2
|= MR2_RXFIFOHALF
;
3723 * Calculate the baud rate timers. For now we will just assume that
3724 * the input and output baud are the same. The sc26198 has a fixed
3725 * baud rate table, so only discrete baud rates possible.
3727 baudrate
= tiosp
->c_cflag
& CBAUD
;
3728 if (baudrate
& CBAUDEX
) {
3729 baudrate
&= ~CBAUDEX
;
3730 if ((baudrate
< 1) || (baudrate
> 4))
3731 tiosp
->c_cflag
&= ~CBAUDEX
;
3735 baudrate
= stl_baudrates
[baudrate
];
3736 if ((tiosp
->c_cflag
& CBAUD
) == B38400
) {
3737 if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_HI
)
3739 else if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_VHI
)
3741 else if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_SHI
)
3743 else if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_WARP
)
3745 else if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_CUST
)
3746 baudrate
= (portp
->baud_base
/ portp
->custom_divisor
);
3748 if (baudrate
> STL_SC26198MAXBAUD
)
3749 baudrate
= STL_SC26198MAXBAUD
;
3752 for (clk
= 0; clk
< SC26198_NRBAUDS
; clk
++)
3753 if (baudrate
<= sc26198_baudtable
[clk
])
3757 * Check what form of modem signaling is required and set it up.
3759 if (tiosp
->c_cflag
& CLOCAL
) {
3760 portp
->port
.flags
&= ~ASYNC_CHECK_CD
;
3762 iopr
|= IOPR_DCDCOS
;
3764 portp
->port
.flags
|= ASYNC_CHECK_CD
;
3768 * Setup sc26198 enhanced modes if we can. In particular we want to
3769 * handle as much of the flow control as possible automatically. As
3770 * well as saving a few CPU cycles it will also greatly improve flow
3771 * control reliability.
3773 if (tiosp
->c_iflag
& IXON
) {
3774 mr0
|= MR0_SWFTX
| MR0_SWFT
;
3775 imron
|= IR_XONXOFF
;
3777 imroff
|= IR_XONXOFF
;
3779 if (tiosp
->c_iflag
& IXOFF
)
3782 if (tiosp
->c_cflag
& CRTSCTS
) {
3788 * All sc26198 register values calculated so go through and set
3792 pr_debug("SETPORT: portnr=%d panelnr=%d brdnr=%d\n",
3793 portp
->portnr
, portp
->panelnr
, portp
->brdnr
);
3794 pr_debug(" mr0=%x mr1=%x mr2=%x clk=%x\n", mr0
, mr1
, mr2
, clk
);
3795 pr_debug(" iopr=%x imron=%x imroff=%x\n", iopr
, imron
, imroff
);
3796 pr_debug(" schr1=%x schr2=%x schr3=%x schr4=%x\n",
3797 tiosp
->c_cc
[VSTART
], tiosp
->c_cc
[VSTOP
],
3798 tiosp
->c_cc
[VSTART
], tiosp
->c_cc
[VSTOP
]);
3800 spin_lock_irqsave(&brd_lock
, flags
);
3801 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
3802 stl_sc26198setreg(portp
, IMR
, 0);
3803 stl_sc26198updatereg(portp
, MR0
, mr0
);
3804 stl_sc26198updatereg(portp
, MR1
, mr1
);
3805 stl_sc26198setreg(portp
, SCCR
, CR_RXERRBLOCK
);
3806 stl_sc26198updatereg(portp
, MR2
, mr2
);
3807 stl_sc26198updatereg(portp
, IOPIOR
,
3808 ((stl_sc26198getreg(portp
, IOPIOR
) & ~IPR_CHANGEMASK
) | iopr
));
3811 stl_sc26198setreg(portp
, TXCSR
, clk
);
3812 stl_sc26198setreg(portp
, RXCSR
, clk
);
3815 stl_sc26198setreg(portp
, XONCR
, tiosp
->c_cc
[VSTART
]);
3816 stl_sc26198setreg(portp
, XOFFCR
, tiosp
->c_cc
[VSTOP
]);
3818 ipr
= stl_sc26198getreg(portp
, IPR
);
3820 portp
->sigs
&= ~TIOCM_CD
;
3822 portp
->sigs
|= TIOCM_CD
;
3824 portp
->imr
= (portp
->imr
& ~imroff
) | imron
;
3825 stl_sc26198setreg(portp
, IMR
, portp
->imr
);
3826 BRDDISABLE(portp
->brdnr
);
3827 spin_unlock_irqrestore(&brd_lock
, flags
);
3830 /*****************************************************************************/
3833 * Set the state of the DTR and RTS signals.
3836 static void stl_sc26198setsignals(struct stlport
*portp
, int dtr
, int rts
)
3838 unsigned char iopioron
, iopioroff
;
3839 unsigned long flags
;
3841 pr_debug("stl_sc26198setsignals(portp=%p,dtr=%d,rts=%d)\n", portp
,
3847 iopioroff
|= IPR_DTR
;
3849 iopioron
|= IPR_DTR
;
3851 iopioroff
|= IPR_RTS
;
3853 iopioron
|= IPR_RTS
;
3855 spin_lock_irqsave(&brd_lock
, flags
);
3856 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
3857 stl_sc26198setreg(portp
, IOPIOR
,
3858 ((stl_sc26198getreg(portp
, IOPIOR
) & ~iopioroff
) | iopioron
));
3859 BRDDISABLE(portp
->brdnr
);
3860 spin_unlock_irqrestore(&brd_lock
, flags
);
3863 /*****************************************************************************/
3866 * Return the state of the signals.
3869 static int stl_sc26198getsignals(struct stlport
*portp
)
3872 unsigned long flags
;
3875 pr_debug("stl_sc26198getsignals(portp=%p)\n", portp
);
3877 spin_lock_irqsave(&brd_lock
, flags
);
3878 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
3879 ipr
= stl_sc26198getreg(portp
, IPR
);
3880 BRDDISABLE(portp
->brdnr
);
3881 spin_unlock_irqrestore(&brd_lock
, flags
);
3884 sigs
|= (ipr
& IPR_DCD
) ? 0 : TIOCM_CD
;
3885 sigs
|= (ipr
& IPR_CTS
) ? 0 : TIOCM_CTS
;
3886 sigs
|= (ipr
& IPR_DTR
) ? 0: TIOCM_DTR
;
3887 sigs
|= (ipr
& IPR_RTS
) ? 0: TIOCM_RTS
;
3892 /*****************************************************************************/
3895 * Enable/Disable the Transmitter and/or Receiver.
3898 static void stl_sc26198enablerxtx(struct stlport
*portp
, int rx
, int tx
)
3901 unsigned long flags
;
3903 pr_debug("stl_sc26198enablerxtx(portp=%p,rx=%d,tx=%d)\n", portp
, rx
,tx
);
3905 ccr
= portp
->crenable
;
3907 ccr
&= ~CR_TXENABLE
;
3911 ccr
&= ~CR_RXENABLE
;
3915 spin_lock_irqsave(&brd_lock
, flags
);
3916 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
3917 stl_sc26198setreg(portp
, SCCR
, ccr
);
3918 BRDDISABLE(portp
->brdnr
);
3919 portp
->crenable
= ccr
;
3920 spin_unlock_irqrestore(&brd_lock
, flags
);
3923 /*****************************************************************************/
3926 * Start/stop the Transmitter and/or Receiver.
3929 static void stl_sc26198startrxtx(struct stlport
*portp
, int rx
, int tx
)
3932 unsigned long flags
;
3934 pr_debug("stl_sc26198startrxtx(portp=%p,rx=%d,tx=%d)\n", portp
, rx
, tx
);
3942 imr
&= ~(IR_RXRDY
| IR_RXBREAK
| IR_RXWATCHDOG
);
3944 imr
|= IR_RXRDY
| IR_RXBREAK
| IR_RXWATCHDOG
;
3946 spin_lock_irqsave(&brd_lock
, flags
);
3947 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
3948 stl_sc26198setreg(portp
, IMR
, imr
);
3949 BRDDISABLE(portp
->brdnr
);
3952 set_bit(ASYI_TXBUSY
, &portp
->istate
);
3953 spin_unlock_irqrestore(&brd_lock
, flags
);
3956 /*****************************************************************************/
3959 * Disable all interrupts from this port.
3962 static void stl_sc26198disableintrs(struct stlport
*portp
)
3964 unsigned long flags
;
3966 pr_debug("stl_sc26198disableintrs(portp=%p)\n", portp
);
3968 spin_lock_irqsave(&brd_lock
, flags
);
3969 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
3971 stl_sc26198setreg(portp
, IMR
, 0);
3972 BRDDISABLE(portp
->brdnr
);
3973 spin_unlock_irqrestore(&brd_lock
, flags
);
3976 /*****************************************************************************/
3978 static void stl_sc26198sendbreak(struct stlport
*portp
, int len
)
3980 unsigned long flags
;
3982 pr_debug("stl_sc26198sendbreak(portp=%p,len=%d)\n", portp
, len
);
3984 spin_lock_irqsave(&brd_lock
, flags
);
3985 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
3987 stl_sc26198setreg(portp
, SCCR
, CR_TXSTARTBREAK
);
3988 portp
->stats
.txbreaks
++;
3990 stl_sc26198setreg(portp
, SCCR
, CR_TXSTOPBREAK
);
3992 BRDDISABLE(portp
->brdnr
);
3993 spin_unlock_irqrestore(&brd_lock
, flags
);
3996 /*****************************************************************************/
3999 * Take flow control actions...
4002 static void stl_sc26198flowctrl(struct stlport
*portp
, int state
)
4004 struct tty_struct
*tty
;
4005 unsigned long flags
;
4008 pr_debug("stl_sc26198flowctrl(portp=%p,state=%x)\n", portp
, state
);
4012 tty
= tty_port_tty_get(&portp
->port
);
4016 spin_lock_irqsave(&brd_lock
, flags
);
4017 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
4020 if (tty
->termios
->c_iflag
& IXOFF
) {
4021 mr0
= stl_sc26198getreg(portp
, MR0
);
4022 stl_sc26198setreg(portp
, MR0
, (mr0
& ~MR0_SWFRXTX
));
4023 stl_sc26198setreg(portp
, SCCR
, CR_TXSENDXON
);
4025 portp
->stats
.rxxon
++;
4026 stl_sc26198wait(portp
);
4027 stl_sc26198setreg(portp
, MR0
, mr0
);
4030 * Question: should we return RTS to what it was before? It may
4031 * have been set by an ioctl... Suppose not, since if you have
4032 * hardware flow control set then it is pretty silly to go and
4033 * set the RTS line by hand.
4035 if (tty
->termios
->c_cflag
& CRTSCTS
) {
4036 stl_sc26198setreg(portp
, MR1
,
4037 (stl_sc26198getreg(portp
, MR1
) | MR1_AUTORTS
));
4038 stl_sc26198setreg(portp
, IOPIOR
,
4039 (stl_sc26198getreg(portp
, IOPIOR
) | IOPR_RTS
));
4040 portp
->stats
.rxrtson
++;
4043 if (tty
->termios
->c_iflag
& IXOFF
) {
4044 mr0
= stl_sc26198getreg(portp
, MR0
);
4045 stl_sc26198setreg(portp
, MR0
, (mr0
& ~MR0_SWFRXTX
));
4046 stl_sc26198setreg(portp
, SCCR
, CR_TXSENDXOFF
);
4048 portp
->stats
.rxxoff
++;
4049 stl_sc26198wait(portp
);
4050 stl_sc26198setreg(portp
, MR0
, mr0
);
4052 if (tty
->termios
->c_cflag
& CRTSCTS
) {
4053 stl_sc26198setreg(portp
, MR1
,
4054 (stl_sc26198getreg(portp
, MR1
) & ~MR1_AUTORTS
));
4055 stl_sc26198setreg(portp
, IOPIOR
,
4056 (stl_sc26198getreg(portp
, IOPIOR
) & ~IOPR_RTS
));
4057 portp
->stats
.rxrtsoff
++;
4061 BRDDISABLE(portp
->brdnr
);
4062 spin_unlock_irqrestore(&brd_lock
, flags
);
4066 /*****************************************************************************/
4069 * Send a flow control character.
4072 static void stl_sc26198sendflow(struct stlport
*portp
, int state
)
4074 struct tty_struct
*tty
;
4075 unsigned long flags
;
4078 pr_debug("stl_sc26198sendflow(portp=%p,state=%x)\n", portp
, state
);
4082 tty
= tty_port_tty_get(&portp
->port
);
4086 spin_lock_irqsave(&brd_lock
, flags
);
4087 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
4089 mr0
= stl_sc26198getreg(portp
, MR0
);
4090 stl_sc26198setreg(portp
, MR0
, (mr0
& ~MR0_SWFRXTX
));
4091 stl_sc26198setreg(portp
, SCCR
, CR_TXSENDXON
);
4093 portp
->stats
.rxxon
++;
4094 stl_sc26198wait(portp
);
4095 stl_sc26198setreg(portp
, MR0
, mr0
);
4097 mr0
= stl_sc26198getreg(portp
, MR0
);
4098 stl_sc26198setreg(portp
, MR0
, (mr0
& ~MR0_SWFRXTX
));
4099 stl_sc26198setreg(portp
, SCCR
, CR_TXSENDXOFF
);
4101 portp
->stats
.rxxoff
++;
4102 stl_sc26198wait(portp
);
4103 stl_sc26198setreg(portp
, MR0
, mr0
);
4105 BRDDISABLE(portp
->brdnr
);
4106 spin_unlock_irqrestore(&brd_lock
, flags
);
4110 /*****************************************************************************/
4112 static void stl_sc26198flush(struct stlport
*portp
)
4114 unsigned long flags
;
4116 pr_debug("stl_sc26198flush(portp=%p)\n", portp
);
4121 spin_lock_irqsave(&brd_lock
, flags
);
4122 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
4123 stl_sc26198setreg(portp
, SCCR
, CR_TXRESET
);
4124 stl_sc26198setreg(portp
, SCCR
, portp
->crenable
);
4125 BRDDISABLE(portp
->brdnr
);
4126 portp
->tx
.tail
= portp
->tx
.head
;
4127 spin_unlock_irqrestore(&brd_lock
, flags
);
4130 /*****************************************************************************/
4133 * Return the current state of data flow on this port. This is only
4134 * really interesting when determining if data has fully completed
4135 * transmission or not... The sc26198 interrupt scheme cannot
4136 * determine when all data has actually drained, so we need to
4137 * check the port statusy register to be sure.
4140 static int stl_sc26198datastate(struct stlport
*portp
)
4142 unsigned long flags
;
4145 pr_debug("stl_sc26198datastate(portp=%p)\n", portp
);
4149 if (test_bit(ASYI_TXBUSY
, &portp
->istate
))
4152 spin_lock_irqsave(&brd_lock
, flags
);
4153 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
4154 sr
= stl_sc26198getreg(portp
, SR
);
4155 BRDDISABLE(portp
->brdnr
);
4156 spin_unlock_irqrestore(&brd_lock
, flags
);
4158 return (sr
& SR_TXEMPTY
) ? 0 : 1;
4161 /*****************************************************************************/
4164 * Delay for a small amount of time, to give the sc26198 a chance
4165 * to process a command...
4168 static void stl_sc26198wait(struct stlport
*portp
)
4172 pr_debug("stl_sc26198wait(portp=%p)\n", portp
);
4177 for (i
= 0; i
< 20; i
++)
4178 stl_sc26198getglobreg(portp
, TSTR
);
4181 /*****************************************************************************/
4184 * If we are TX flow controlled and in IXANY mode then we may
4185 * need to unflow control here. We gotta do this because of the
4186 * automatic flow control modes of the sc26198.
4189 static void stl_sc26198txunflow(struct stlport
*portp
, struct tty_struct
*tty
)
4193 mr0
= stl_sc26198getreg(portp
, MR0
);
4194 stl_sc26198setreg(portp
, MR0
, (mr0
& ~MR0_SWFRXTX
));
4195 stl_sc26198setreg(portp
, SCCR
, CR_HOSTXON
);
4196 stl_sc26198wait(portp
);
4197 stl_sc26198setreg(portp
, MR0
, mr0
);
4198 clear_bit(ASYI_TXFLOWED
, &portp
->istate
);
4201 /*****************************************************************************/
4204 * Interrupt service routine for sc26198 panels.
4207 static void stl_sc26198intr(struct stlpanel
*panelp
, unsigned int iobase
)
4209 struct stlport
*portp
;
4212 spin_lock(&brd_lock
);
4215 * Work around bug in sc26198 chip... Cannot have A6 address
4216 * line of UART high, else iack will be returned as 0.
4218 outb(0, (iobase
+ 1));
4220 iack
= inb(iobase
+ XP_IACK
);
4221 portp
= panelp
->ports
[(iack
& IVR_CHANMASK
) + ((iobase
& 0x4) << 1)];
4223 if (iack
& IVR_RXDATA
)
4224 stl_sc26198rxisr(portp
, iack
);
4225 else if (iack
& IVR_TXDATA
)
4226 stl_sc26198txisr(portp
);
4228 stl_sc26198otherisr(portp
, iack
);
4230 spin_unlock(&brd_lock
);
4233 /*****************************************************************************/
4236 * Transmit interrupt handler. This has gotta be fast! Handling TX
4237 * chars is pretty simple, stuff as many as possible from the TX buffer
4238 * into the sc26198 FIFO.
4239 * In practice it is possible that interrupts are enabled but that the
4240 * port has been hung up. Need to handle not having any TX buffer here,
4241 * this is done by using the side effect that head and tail will also
4242 * be NULL if the buffer has been freed.
4245 static void stl_sc26198txisr(struct stlport
*portp
)
4247 struct tty_struct
*tty
;
4248 unsigned int ioaddr
;
4253 pr_debug("stl_sc26198txisr(portp=%p)\n", portp
);
4255 ioaddr
= portp
->ioaddr
;
4256 head
= portp
->tx
.head
;
4257 tail
= portp
->tx
.tail
;
4258 len
= (head
>= tail
) ? (head
- tail
) : (STL_TXBUFSIZE
- (tail
- head
));
4259 if ((len
== 0) || ((len
< STL_TXBUFLOW
) &&
4260 (test_bit(ASYI_TXLOW
, &portp
->istate
) == 0))) {
4261 set_bit(ASYI_TXLOW
, &portp
->istate
);
4262 tty
= tty_port_tty_get(&portp
->port
);
4270 outb((MR0
| portp
->uartaddr
), (ioaddr
+ XP_ADDR
));
4271 mr0
= inb(ioaddr
+ XP_DATA
);
4272 if ((mr0
& MR0_TXMASK
) == MR0_TXEMPTY
) {
4273 portp
->imr
&= ~IR_TXRDY
;
4274 outb((IMR
| portp
->uartaddr
), (ioaddr
+ XP_ADDR
));
4275 outb(portp
->imr
, (ioaddr
+ XP_DATA
));
4276 clear_bit(ASYI_TXBUSY
, &portp
->istate
);
4278 mr0
|= ((mr0
& ~MR0_TXMASK
) | MR0_TXEMPTY
);
4279 outb(mr0
, (ioaddr
+ XP_DATA
));
4282 len
= min(len
, SC26198_TXFIFOSIZE
);
4283 portp
->stats
.txtotal
+= len
;
4284 stlen
= min_t(unsigned int, len
,
4285 (portp
->tx
.buf
+ STL_TXBUFSIZE
) - tail
);
4286 outb(GTXFIFO
, (ioaddr
+ XP_ADDR
));
4287 outsb((ioaddr
+ XP_DATA
), tail
, stlen
);
4290 if (tail
>= (portp
->tx
.buf
+ STL_TXBUFSIZE
))
4291 tail
= portp
->tx
.buf
;
4293 outsb((ioaddr
+ XP_DATA
), tail
, len
);
4296 portp
->tx
.tail
= tail
;
4300 /*****************************************************************************/
4303 * Receive character interrupt handler. Determine if we have good chars
4304 * or bad chars and then process appropriately. Good chars are easy
4305 * just shove the lot into the RX buffer and set all status byte to 0.
4306 * If a bad RX char then process as required. This routine needs to be
4307 * fast! In practice it is possible that we get an interrupt on a port
4308 * that is closed. This can happen on hangups - since they completely
4309 * shutdown a port not in user context. Need to handle this case.
4312 static void stl_sc26198rxisr(struct stlport
*portp
, unsigned int iack
)
4314 struct tty_struct
*tty
;
4315 unsigned int len
, buflen
, ioaddr
;
4317 pr_debug("stl_sc26198rxisr(portp=%p,iack=%x)\n", portp
, iack
);
4319 tty
= tty_port_tty_get(&portp
->port
);
4320 ioaddr
= portp
->ioaddr
;
4321 outb(GIBCR
, (ioaddr
+ XP_ADDR
));
4322 len
= inb(ioaddr
+ XP_DATA
) + 1;
4324 if ((iack
& IVR_TYPEMASK
) == IVR_RXDATA
) {
4325 if (tty
== NULL
|| (buflen
= tty_buffer_request_room(tty
, len
)) == 0) {
4326 len
= min_t(unsigned int, len
, sizeof(stl_unwanted
));
4327 outb(GRXFIFO
, (ioaddr
+ XP_ADDR
));
4328 insb((ioaddr
+ XP_DATA
), &stl_unwanted
[0], len
);
4329 portp
->stats
.rxlost
+= len
;
4330 portp
->stats
.rxtotal
+= len
;
4332 len
= min(len
, buflen
);
4335 outb(GRXFIFO
, (ioaddr
+ XP_ADDR
));
4336 tty_prepare_flip_string(tty
, &ptr
, len
);
4337 insb((ioaddr
+ XP_DATA
), ptr
, len
);
4338 tty_schedule_flip(tty
);
4339 portp
->stats
.rxtotal
+= len
;
4343 stl_sc26198rxbadchars(portp
);
4347 * If we are TX flow controlled and in IXANY mode then we may need
4348 * to unflow control here. We gotta do this because of the automatic
4349 * flow control modes of the sc26198.
4351 if (test_bit(ASYI_TXFLOWED
, &portp
->istate
)) {
4352 if ((tty
!= NULL
) &&
4353 (tty
->termios
!= NULL
) &&
4354 (tty
->termios
->c_iflag
& IXANY
)) {
4355 stl_sc26198txunflow(portp
, tty
);
4361 /*****************************************************************************/
4364 * Process an RX bad character.
4367 static void stl_sc26198rxbadch(struct stlport
*portp
, unsigned char status
, char ch
)
4369 struct tty_struct
*tty
;
4370 unsigned int ioaddr
;
4372 tty
= tty_port_tty_get(&portp
->port
);
4373 ioaddr
= portp
->ioaddr
;
4375 if (status
& SR_RXPARITY
)
4376 portp
->stats
.rxparity
++;
4377 if (status
& SR_RXFRAMING
)
4378 portp
->stats
.rxframing
++;
4379 if (status
& SR_RXOVERRUN
)
4380 portp
->stats
.rxoverrun
++;
4381 if (status
& SR_RXBREAK
)
4382 portp
->stats
.rxbreaks
++;
4384 if ((tty
!= NULL
) &&
4385 ((portp
->rxignoremsk
& status
) == 0)) {
4386 if (portp
->rxmarkmsk
& status
) {
4387 if (status
& SR_RXBREAK
) {
4389 if (portp
->port
.flags
& ASYNC_SAK
) {
4391 BRDENABLE(portp
->brdnr
, portp
->pagenr
);
4393 } else if (status
& SR_RXPARITY
)
4394 status
= TTY_PARITY
;
4395 else if (status
& SR_RXFRAMING
)
4397 else if(status
& SR_RXOVERRUN
)
4398 status
= TTY_OVERRUN
;
4404 tty_insert_flip_char(tty
, ch
, status
);
4405 tty_schedule_flip(tty
);
4408 portp
->stats
.rxtotal
++;
4413 /*****************************************************************************/
4416 * Process all characters in the RX FIFO of the UART. Check all char
4417 * status bytes as well, and process as required. We need to check
4418 * all bytes in the FIFO, in case some more enter the FIFO while we
4419 * are here. To get the exact character error type we need to switch
4420 * into CHAR error mode (that is why we need to make sure we empty
4424 static void stl_sc26198rxbadchars(struct stlport
*portp
)
4426 unsigned char status
, mr1
;
4430 * To get the precise error type for each character we must switch
4431 * back into CHAR error mode.
4433 mr1
= stl_sc26198getreg(portp
, MR1
);
4434 stl_sc26198setreg(portp
, MR1
, (mr1
& ~MR1_ERRBLOCK
));
4436 while ((status
= stl_sc26198getreg(portp
, SR
)) & SR_RXRDY
) {
4437 stl_sc26198setreg(portp
, SCCR
, CR_CLEARRXERR
);
4438 ch
= stl_sc26198getreg(portp
, RXFIFO
);
4439 stl_sc26198rxbadch(portp
, status
, ch
);
4443 * To get correct interrupt class we must switch back into BLOCK
4446 stl_sc26198setreg(portp
, MR1
, mr1
);
4449 /*****************************************************************************/
4452 * Other interrupt handler. This includes modem signals, flow
4453 * control actions, etc. Most stuff is left to off-level interrupt
4457 static void stl_sc26198otherisr(struct stlport
*portp
, unsigned int iack
)
4459 unsigned char cir
, ipr
, xisr
;
4461 pr_debug("stl_sc26198otherisr(portp=%p,iack=%x)\n", portp
, iack
);
4463 cir
= stl_sc26198getglobreg(portp
, CIR
);
4465 switch (cir
& CIR_SUBTYPEMASK
) {
4467 ipr
= stl_sc26198getreg(portp
, IPR
);
4468 if (ipr
& IPR_DCDCHANGE
) {
4469 stl_cd_change(portp
);
4470 portp
->stats
.modem
++;
4473 case CIR_SUBXONXOFF
:
4474 xisr
= stl_sc26198getreg(portp
, XISR
);
4475 if (xisr
& XISR_RXXONGOT
) {
4476 set_bit(ASYI_TXFLOWED
, &portp
->istate
);
4477 portp
->stats
.txxoff
++;
4479 if (xisr
& XISR_RXXOFFGOT
) {
4480 clear_bit(ASYI_TXFLOWED
, &portp
->istate
);
4481 portp
->stats
.txxon
++;
4485 stl_sc26198setreg(portp
, SCCR
, CR_BREAKRESET
);
4486 stl_sc26198rxbadchars(portp
);
4493 static void stl_free_isabrds(void)
4495 struct stlbrd
*brdp
;
4498 for (i
= 0; i
< stl_nrbrds
; i
++) {
4499 if ((brdp
= stl_brds
[i
]) == NULL
|| (brdp
->state
& STL_PROBED
))
4502 free_irq(brdp
->irq
, brdp
);
4504 stl_cleanup_panels(brdp
);
4506 release_region(brdp
->ioaddr1
, brdp
->iosize1
);
4507 if (brdp
->iosize2
> 0)
4508 release_region(brdp
->ioaddr2
, brdp
->iosize2
);
4516 * Loadable module initialization stuff.
4518 static int __init
stallion_module_init(void)
4520 struct stlbrd
*brdp
;
4521 struct stlconf conf
;
4525 printk(KERN_INFO
"%s: version %s\n", stl_drvtitle
, stl_drvversion
);
4527 spin_lock_init(&stallion_lock
);
4528 spin_lock_init(&brd_lock
);
4530 stl_serial
= alloc_tty_driver(STL_MAXBRDS
* STL_MAXPORTS
);
4536 stl_serial
->owner
= THIS_MODULE
;
4537 stl_serial
->driver_name
= stl_drvname
;
4538 stl_serial
->name
= "ttyE";
4539 stl_serial
->major
= STL_SERIALMAJOR
;
4540 stl_serial
->minor_start
= 0;
4541 stl_serial
->type
= TTY_DRIVER_TYPE_SERIAL
;
4542 stl_serial
->subtype
= SERIAL_TYPE_NORMAL
;
4543 stl_serial
->init_termios
= stl_deftermios
;
4544 stl_serial
->flags
= TTY_DRIVER_REAL_RAW
| TTY_DRIVER_DYNAMIC_DEV
;
4545 tty_set_operations(stl_serial
, &stl_ops
);
4547 retval
= tty_register_driver(stl_serial
);
4549 printk("STALLION: failed to register serial driver\n");
4554 * Find any dynamically supported boards. That is via module load
4557 for (i
= stl_nrbrds
; i
< stl_nargs
; i
++) {
4558 memset(&conf
, 0, sizeof(conf
));
4559 if (stl_parsebrd(&conf
, stl_brdsp
[i
]) == 0)
4561 if ((brdp
= stl_allocbrd()) == NULL
)
4564 brdp
->brdtype
= conf
.brdtype
;
4565 brdp
->ioaddr1
= conf
.ioaddr1
;
4566 brdp
->ioaddr2
= conf
.ioaddr2
;
4567 brdp
->irq
= conf
.irq
;
4568 brdp
->irqtype
= conf
.irqtype
;
4569 stl_brds
[brdp
->brdnr
] = brdp
;
4570 if (stl_brdinit(brdp
)) {
4571 stl_brds
[brdp
->brdnr
] = NULL
;
4574 for (j
= 0; j
< brdp
->nrports
; j
++)
4575 tty_register_device(stl_serial
,
4576 brdp
->brdnr
* STL_MAXPORTS
+ j
, NULL
);
4581 /* this has to be _after_ isa finding because of locking */
4582 retval
= pci_register_driver(&stl_pcidriver
);
4583 if (retval
&& stl_nrbrds
== 0) {
4584 printk(KERN_ERR
"STALLION: can't register pci driver\n");
4589 * Set up a character driver for per board stuff. This is mainly used
4590 * to do stats ioctls on the ports.
4592 if (register_chrdev(STL_SIOMEMMAJOR
, "staliomem", &stl_fsiomem
))
4593 printk("STALLION: failed to register serial board device\n");
4595 stallion_class
= class_create(THIS_MODULE
, "staliomem");
4596 if (IS_ERR(stallion_class
))
4597 printk("STALLION: failed to create class\n");
4598 for (i
= 0; i
< 4; i
++)
4599 device_create(stallion_class
, NULL
, MKDEV(STL_SIOMEMMAJOR
, i
),
4600 NULL
, "staliomem%d", i
);
4604 tty_unregister_driver(stl_serial
);
4606 put_tty_driver(stl_serial
);
4611 static void __exit
stallion_module_exit(void)
4613 struct stlbrd
*brdp
;
4616 pr_debug("cleanup_module()\n");
4618 printk(KERN_INFO
"Unloading %s: version %s\n", stl_drvtitle
,
4622 * Free up all allocated resources used by the ports. This includes
4623 * memory and interrupts. As part of this process we will also do
4624 * a hangup on every open port - to try to flush out any processes
4625 * hanging onto ports.
4627 for (i
= 0; i
< stl_nrbrds
; i
++) {
4628 if ((brdp
= stl_brds
[i
]) == NULL
|| (brdp
->state
& STL_PROBED
))
4630 for (j
= 0; j
< brdp
->nrports
; j
++)
4631 tty_unregister_device(stl_serial
,
4632 brdp
->brdnr
* STL_MAXPORTS
+ j
);
4635 for (i
= 0; i
< 4; i
++)
4636 device_destroy(stallion_class
, MKDEV(STL_SIOMEMMAJOR
, i
));
4637 unregister_chrdev(STL_SIOMEMMAJOR
, "staliomem");
4638 class_destroy(stallion_class
);
4640 pci_unregister_driver(&stl_pcidriver
);
4644 tty_unregister_driver(stl_serial
);
4645 put_tty_driver(stl_serial
);
4648 module_init(stallion_module_init
);
4649 module_exit(stallion_module_exit
);
4651 MODULE_AUTHOR("Greg Ungerer");
4652 MODULE_DESCRIPTION("Stallion Multiport Serial Driver");
4653 MODULE_LICENSE("GPL");