1 /*****************************************************************************/
4 * istallion.c -- stallion intelligent 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/config.h>
30 #include <linux/module.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/cdk.h>
37 #include <linux/comstats.h>
38 #include <linux/istallion.h>
39 #include <linux/ioport.h>
40 #include <linux/delay.h>
41 #include <linux/init.h>
42 #include <linux/devfs_fs_kernel.h>
43 #include <linux/device.h>
44 #include <linux/wait.h>
47 #include <asm/uaccess.h>
50 #include <linux/pci.h>
53 /*****************************************************************************/
56 * Define different board types. Not all of the following board types
57 * are supported by this driver. But I will use the standard "assigned"
58 * board numbers. Currently supported boards are abbreviated as:
59 * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and
63 #define BRD_STALLION 1
65 #define BRD_ONBOARD2 3
68 #define BRD_BRUMBY16 6
69 #define BRD_ONBOARDE 7
70 #define BRD_ONBOARD32 9
71 #define BRD_ONBOARD2_32 10
72 #define BRD_ONBOARDRS 11
80 #define BRD_ECH64PCI 27
81 #define BRD_EASYIOPCI 28
84 #define BRD_BRUMBY BRD_BRUMBY4
87 * Define a configuration structure to hold the board configuration.
88 * Need to set this up in the code (for now) with the boards that are
89 * to be configured into the system. This is what needs to be modified
90 * when adding/removing/modifying boards. Each line entry in the
91 * stli_brdconf[] array is a board. Each line contains io/irq/memory
92 * ranges for that board (as well as what type of board it is).
94 * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },
95 * This line will configure an EasyConnection 8/64 at io address 2a0,
96 * and shared memory address of cc000. Multiple EasyConnection 8/64
97 * boards can share the same shared memory address space. No interrupt
98 * is required for this board type.
100 * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 },
101 * This line will configure an EasyConnection 8/64 EISA in slot 5 and
102 * shared memory address of 0x80000000 (2 GByte). Multiple
103 * EasyConnection 8/64 EISA boards can share the same shared memory
104 * address space. No interrupt is required for this board type.
106 * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 },
107 * This line will configure an ONboard (ISA type) at io address 240,
108 * and shared memory address of d0000. Multiple ONboards can share
109 * the same shared memory address space. No interrupt required.
111 * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 },
112 * This line will configure a Brumby board (any number of ports!) at
113 * io address 360 and shared memory address of c8000. All Brumby boards
114 * configured into a system must have their own separate io and memory
115 * addresses. No interrupt is required.
117 * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 },
118 * This line will configure an original Stallion board at io address 330
119 * and shared memory address d0000 (this would only be valid for a "V4.0"
120 * or Rev.O Stallion board). All Stallion boards configured into the
121 * system must have their own separate io and memory addresses. No
122 * interrupt is required.
129 unsigned long memaddr
;
134 static stlconf_t stli_brdconf
[] = {
135 /*{ BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },*/
138 static int stli_nrbrds
= sizeof(stli_brdconf
) / sizeof(stlconf_t
);
141 * There is some experimental EISA board detection code in this driver.
142 * By default it is disabled, but for those that want to try it out,
143 * then set the define below to be 1.
145 #define STLI_EISAPROBE 0
147 /*****************************************************************************/
150 * Define some important driver characteristics. Device major numbers
151 * allocated as per Linux Device Registry.
153 #ifndef STL_SIOMEMMAJOR
154 #define STL_SIOMEMMAJOR 28
156 #ifndef STL_SERIALMAJOR
157 #define STL_SERIALMAJOR 24
159 #ifndef STL_CALLOUTMAJOR
160 #define STL_CALLOUTMAJOR 25
163 /*****************************************************************************/
166 * Define our local driver identity first. Set up stuff to deal with
167 * all the local structures required by a serial tty driver.
169 static char *stli_drvtitle
= "Stallion Intelligent Multiport Serial Driver";
170 static char *stli_drvname
= "istallion";
171 static char *stli_drvversion
= "5.6.0";
172 static char *stli_serialname
= "ttyE";
174 static struct tty_driver
*stli_serial
;
177 * We will need to allocate a temporary write buffer for chars that
178 * come direct from user space. The problem is that a copy from user
179 * space might cause a page fault (typically on a system that is
180 * swapping!). All ports will share one buffer - since if the system
181 * is already swapping a shared buffer won't make things any worse.
183 static char *stli_tmpwritebuf
;
184 static DECLARE_MUTEX(stli_tmpwritesem
);
186 #define STLI_TXBUFSIZE 4096
189 * Use a fast local buffer for cooked characters. Typically a whole
190 * bunch of cooked characters come in for a port, 1 at a time. So we
191 * save those up into a local buffer, then write out the whole lot
192 * with a large memcpy. Just use 1 buffer for all ports, since its
193 * use it is only need for short periods of time by each port.
195 static char *stli_txcookbuf
;
196 static int stli_txcooksize
;
197 static int stli_txcookrealsize
;
198 static struct tty_struct
*stli_txcooktty
;
201 * Define a local default termios struct. All ports will be created
202 * with this termios initially. Basically all it defines is a raw port
203 * at 9600 baud, 8 data bits, no parity, 1 stop bit.
205 static struct termios stli_deftermios
= {
206 .c_cflag
= (B9600
| CS8
| CREAD
| HUPCL
| CLOCAL
),
211 * Define global stats structures. Not used often, and can be
212 * re-used for each stats call.
214 static comstats_t stli_comstats
;
215 static combrd_t stli_brdstats
;
216 static asystats_t stli_cdkstats
;
217 static stlibrd_t stli_dummybrd
;
218 static stliport_t stli_dummyport
;
220 /*****************************************************************************/
222 static stlibrd_t
*stli_brds
[STL_MAXBRDS
];
224 static int stli_shared
;
227 * Per board state flags. Used with the state field of the board struct.
228 * Not really much here... All we need to do is keep track of whether
229 * the board has been detected, and whether it is actually running a slave
232 #define BST_FOUND 0x1
233 #define BST_STARTED 0x2
236 * Define the set of port state flags. These are marked for internal
237 * state purposes only, usually to do with the state of communications
238 * with the slave. Most of them need to be updated atomically, so always
239 * use the bit setting operations (unless protected by cli/sti).
241 #define ST_INITIALIZING 1
247 #define ST_DOFLUSHRX 7
248 #define ST_DOFLUSHTX 8
251 #define ST_GETSIGS 11
254 * Define an array of board names as printable strings. Handy for
255 * referencing boards when printing trace and stuff.
257 static char *stli_brdnames
[] = {
290 /*****************************************************************************/
294 * Define some string labels for arguments passed from the module
295 * load line. These allow for easy board definitions, and easy
296 * modification of the io, memory and irq resoucres.
299 static char *board0
[8];
300 static char *board1
[8];
301 static char *board2
[8];
302 static char *board3
[8];
304 static char **stli_brdsp
[] = {
312 * Define a set of common board names, and types. This is used to
313 * parse any module arguments.
316 typedef struct stlibrdtype
{
321 static stlibrdtype_t stli_brdstr
[] = {
322 { "stallion", BRD_STALLION
},
323 { "1", BRD_STALLION
},
324 { "brumby", BRD_BRUMBY
},
325 { "brumby4", BRD_BRUMBY
},
326 { "brumby/4", BRD_BRUMBY
},
327 { "brumby-4", BRD_BRUMBY
},
328 { "brumby8", BRD_BRUMBY
},
329 { "brumby/8", BRD_BRUMBY
},
330 { "brumby-8", BRD_BRUMBY
},
331 { "brumby16", BRD_BRUMBY
},
332 { "brumby/16", BRD_BRUMBY
},
333 { "brumby-16", BRD_BRUMBY
},
335 { "onboard2", BRD_ONBOARD2
},
336 { "onboard-2", BRD_ONBOARD2
},
337 { "onboard/2", BRD_ONBOARD2
},
338 { "onboard-mc", BRD_ONBOARD2
},
339 { "onboard/mc", BRD_ONBOARD2
},
340 { "onboard-mca", BRD_ONBOARD2
},
341 { "onboard/mca", BRD_ONBOARD2
},
342 { "3", BRD_ONBOARD2
},
343 { "onboard", BRD_ONBOARD
},
344 { "onboardat", BRD_ONBOARD
},
345 { "4", BRD_ONBOARD
},
346 { "onboarde", BRD_ONBOARDE
},
347 { "onboard-e", BRD_ONBOARDE
},
348 { "onboard/e", BRD_ONBOARDE
},
349 { "onboard-ei", BRD_ONBOARDE
},
350 { "onboard/ei", BRD_ONBOARDE
},
351 { "7", BRD_ONBOARDE
},
353 { "ecpat", BRD_ECP
},
354 { "ec8/64", BRD_ECP
},
355 { "ec8/64-at", BRD_ECP
},
356 { "ec8/64-isa", BRD_ECP
},
358 { "ecpe", BRD_ECPE
},
359 { "ecpei", BRD_ECPE
},
360 { "ec8/64-e", BRD_ECPE
},
361 { "ec8/64-ei", BRD_ECPE
},
363 { "ecpmc", BRD_ECPMC
},
364 { "ec8/64-mc", BRD_ECPMC
},
365 { "ec8/64-mca", BRD_ECPMC
},
367 { "ecppci", BRD_ECPPCI
},
368 { "ec/ra", BRD_ECPPCI
},
369 { "ec/ra-pc", BRD_ECPPCI
},
370 { "ec/ra-pci", BRD_ECPPCI
},
371 { "29", BRD_ECPPCI
},
375 * Define the module agruments.
377 MODULE_AUTHOR("Greg Ungerer");
378 MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver");
379 MODULE_LICENSE("GPL");
382 MODULE_PARM(board0
, "1-3s");
383 MODULE_PARM_DESC(board0
, "Board 0 config -> name[,ioaddr[,memaddr]");
384 MODULE_PARM(board1
, "1-3s");
385 MODULE_PARM_DESC(board1
, "Board 1 config -> name[,ioaddr[,memaddr]");
386 MODULE_PARM(board2
, "1-3s");
387 MODULE_PARM_DESC(board2
, "Board 2 config -> name[,ioaddr[,memaddr]");
388 MODULE_PARM(board3
, "1-3s");
389 MODULE_PARM_DESC(board3
, "Board 3 config -> name[,ioaddr[,memaddr]");
394 * Set up a default memory address table for EISA board probing.
395 * The default addresses are all bellow 1Mbyte, which has to be the
396 * case anyway. They should be safe, since we only read values from
397 * them, and interrupts are disabled while we do it. If the higher
398 * memory support is compiled in then we also try probing around
399 * the 1Gb, 2Gb and 3Gb areas as well...
401 static unsigned long stli_eisamemprobeaddrs
[] = {
402 0xc0000, 0xd0000, 0xe0000, 0xf0000,
403 0x80000000, 0x80010000, 0x80020000, 0x80030000,
404 0x40000000, 0x40010000, 0x40020000, 0x40030000,
405 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000,
406 0xff000000, 0xff010000, 0xff020000, 0xff030000,
409 static int stli_eisamempsize
= sizeof(stli_eisamemprobeaddrs
) / sizeof(unsigned long);
410 int stli_eisaprobe
= STLI_EISAPROBE
;
413 * Define the Stallion PCI vendor and device IDs.
416 #ifndef PCI_VENDOR_ID_STALLION
417 #define PCI_VENDOR_ID_STALLION 0x124d
419 #ifndef PCI_DEVICE_ID_ECRA
420 #define PCI_DEVICE_ID_ECRA 0x0004
423 static struct pci_device_id istallion_pci_tbl
[] = {
424 { PCI_VENDOR_ID_STALLION
, PCI_DEVICE_ID_ECRA
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0 },
427 MODULE_DEVICE_TABLE(pci
, istallion_pci_tbl
);
429 #endif /* CONFIG_PCI */
431 /*****************************************************************************/
434 * Hardware configuration info for ECP boards. These defines apply
435 * to the directly accessible io ports of the ECP. There is a set of
436 * defines for each ECP board type, ISA, EISA, MCA and PCI.
440 #define ECP_MEMSIZE (128 * 1024)
441 #define ECP_PCIMEMSIZE (256 * 1024)
443 #define ECP_ATPAGESIZE (4 * 1024)
444 #define ECP_MCPAGESIZE (4 * 1024)
445 #define ECP_EIPAGESIZE (64 * 1024)
446 #define ECP_PCIPAGESIZE (64 * 1024)
448 #define STL_EISAID 0x8c4e
451 * Important defines for the ISA class of ECP board.
454 #define ECP_ATCONFR 1
455 #define ECP_ATMEMAR 2
456 #define ECP_ATMEMPR 3
457 #define ECP_ATSTOP 0x1
458 #define ECP_ATINTENAB 0x10
459 #define ECP_ATENABLE 0x20
460 #define ECP_ATDISABLE 0x00
461 #define ECP_ATADDRMASK 0x3f000
462 #define ECP_ATADDRSHFT 12
465 * Important defines for the EISA class of ECP board.
468 #define ECP_EIMEMARL 1
469 #define ECP_EICONFR 2
470 #define ECP_EIMEMARH 3
471 #define ECP_EIENABLE 0x1
472 #define ECP_EIDISABLE 0x0
473 #define ECP_EISTOP 0x4
474 #define ECP_EIEDGE 0x00
475 #define ECP_EILEVEL 0x80
476 #define ECP_EIADDRMASKL 0x00ff0000
477 #define ECP_EIADDRSHFTL 16
478 #define ECP_EIADDRMASKH 0xff000000
479 #define ECP_EIADDRSHFTH 24
480 #define ECP_EIBRDENAB 0xc84
482 #define ECP_EISAID 0x4
485 * Important defines for the Micro-channel class of ECP board.
486 * (It has a lot in common with the ISA boards.)
489 #define ECP_MCCONFR 1
490 #define ECP_MCSTOP 0x20
491 #define ECP_MCENABLE 0x80
492 #define ECP_MCDISABLE 0x00
495 * Important defines for the PCI class of ECP board.
496 * (It has a lot in common with the other ECP boards.)
498 #define ECP_PCIIREG 0
499 #define ECP_PCICONFR 1
500 #define ECP_PCISTOP 0x01
503 * Hardware configuration info for ONboard and Brumby boards. These
504 * defines apply to the directly accessible io ports of these boards.
506 #define ONB_IOSIZE 16
507 #define ONB_MEMSIZE (64 * 1024)
508 #define ONB_ATPAGESIZE (64 * 1024)
509 #define ONB_MCPAGESIZE (64 * 1024)
510 #define ONB_EIMEMSIZE (128 * 1024)
511 #define ONB_EIPAGESIZE (64 * 1024)
514 * Important defines for the ISA class of ONboard board.
517 #define ONB_ATMEMAR 1
518 #define ONB_ATCONFR 2
519 #define ONB_ATSTOP 0x4
520 #define ONB_ATENABLE 0x01
521 #define ONB_ATDISABLE 0x00
522 #define ONB_ATADDRMASK 0xff0000
523 #define ONB_ATADDRSHFT 16
525 #define ONB_MEMENABLO 0
526 #define ONB_MEMENABHI 0x02
529 * Important defines for the EISA class of ONboard board.
532 #define ONB_EIMEMARL 1
533 #define ONB_EICONFR 2
534 #define ONB_EIMEMARH 3
535 #define ONB_EIENABLE 0x1
536 #define ONB_EIDISABLE 0x0
537 #define ONB_EISTOP 0x4
538 #define ONB_EIEDGE 0x00
539 #define ONB_EILEVEL 0x80
540 #define ONB_EIADDRMASKL 0x00ff0000
541 #define ONB_EIADDRSHFTL 16
542 #define ONB_EIADDRMASKH 0xff000000
543 #define ONB_EIADDRSHFTH 24
544 #define ONB_EIBRDENAB 0xc84
546 #define ONB_EISAID 0x1
549 * Important defines for the Brumby boards. They are pretty simple,
550 * there is not much that is programmably configurable.
552 #define BBY_IOSIZE 16
553 #define BBY_MEMSIZE (64 * 1024)
554 #define BBY_PAGESIZE (16 * 1024)
557 #define BBY_ATCONFR 1
558 #define BBY_ATSTOP 0x4
561 * Important defines for the Stallion boards. They are pretty simple,
562 * there is not much that is programmably configurable.
564 #define STAL_IOSIZE 16
565 #define STAL_MEMSIZE (64 * 1024)
566 #define STAL_PAGESIZE (64 * 1024)
569 * Define the set of status register values for EasyConnection panels.
570 * The signature will return with the status value for each panel. From
571 * this we can determine what is attached to the board - before we have
572 * actually down loaded any code to it.
574 #define ECH_PNLSTATUS 2
575 #define ECH_PNL16PORT 0x20
576 #define ECH_PNLIDMASK 0x07
577 #define ECH_PNLXPID 0x40
578 #define ECH_PNLINTRPEND 0x80
581 * Define some macros to do things to the board. Even those these boards
582 * are somewhat related there is often significantly different ways of
583 * doing some operation on it (like enable, paging, reset, etc). So each
584 * board class has a set of functions which do the commonly required
585 * operations. The macros below basically just call these functions,
586 * generally checking for a NULL function - which means that the board
587 * needs nothing done to it to achieve this operation!
589 #define EBRDINIT(brdp) \
590 if (brdp->init != NULL) \
593 #define EBRDENABLE(brdp) \
594 if (brdp->enable != NULL) \
595 (* brdp->enable)(brdp);
597 #define EBRDDISABLE(brdp) \
598 if (brdp->disable != NULL) \
599 (* brdp->disable)(brdp);
601 #define EBRDINTR(brdp) \
602 if (brdp->intr != NULL) \
603 (* brdp->intr)(brdp);
605 #define EBRDRESET(brdp) \
606 if (brdp->reset != NULL) \
607 (* brdp->reset)(brdp);
609 #define EBRDGETMEMPTR(brdp,offset) \
610 (* brdp->getmemptr)(brdp, offset, __LINE__)
613 * Define the maximal baud rate, and the default baud base for ports.
615 #define STL_MAXBAUD 460800
616 #define STL_BAUDBASE 115200
617 #define STL_CLOSEDELAY (5 * HZ / 10)
619 /*****************************************************************************/
622 * Define macros to extract a brd or port number from a minor number.
624 #define MINOR2BRD(min) (((min) & 0xc0) >> 6)
625 #define MINOR2PORT(min) ((min) & 0x3f)
628 * Define a baud rate table that converts termios baud rate selector
629 * into the actual baud rate value. All baud rate calculations are based
630 * on the actual baud rate required.
632 static unsigned int stli_baudrates
[] = {
633 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
634 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600
637 /*****************************************************************************/
640 * Define some handy local macros...
643 #define MIN(a,b) (((a) <= (b)) ? (a) : (b))
646 #define TOLOWER(x) ((((x) >= 'A') && ((x) <= 'Z')) ? ((x) + 0x20) : (x))
648 /*****************************************************************************/
651 * Prototype all functions in this driver!
655 static void stli_argbrds(void);
656 static int stli_parsebrd(stlconf_t
*confp
, char **argp
);
658 static unsigned long stli_atol(char *str
);
662 static int stli_open(struct tty_struct
*tty
, struct file
*filp
);
663 static void stli_close(struct tty_struct
*tty
, struct file
*filp
);
664 static int stli_write(struct tty_struct
*tty
, const unsigned char *buf
, int count
);
665 static void stli_putchar(struct tty_struct
*tty
, unsigned char ch
);
666 static void stli_flushchars(struct tty_struct
*tty
);
667 static int stli_writeroom(struct tty_struct
*tty
);
668 static int stli_charsinbuffer(struct tty_struct
*tty
);
669 static int stli_ioctl(struct tty_struct
*tty
, struct file
*file
, unsigned int cmd
, unsigned long arg
);
670 static void stli_settermios(struct tty_struct
*tty
, struct termios
*old
);
671 static void stli_throttle(struct tty_struct
*tty
);
672 static void stli_unthrottle(struct tty_struct
*tty
);
673 static void stli_stop(struct tty_struct
*tty
);
674 static void stli_start(struct tty_struct
*tty
);
675 static void stli_flushbuffer(struct tty_struct
*tty
);
676 static void stli_breakctl(struct tty_struct
*tty
, int state
);
677 static void stli_waituntilsent(struct tty_struct
*tty
, int timeout
);
678 static void stli_sendxchar(struct tty_struct
*tty
, char ch
);
679 static void stli_hangup(struct tty_struct
*tty
);
680 static int stli_portinfo(stlibrd_t
*brdp
, stliport_t
*portp
, int portnr
, char *pos
);
682 static int stli_brdinit(stlibrd_t
*brdp
);
683 static int stli_startbrd(stlibrd_t
*brdp
);
684 static ssize_t
stli_memread(struct file
*fp
, char __user
*buf
, size_t count
, loff_t
*offp
);
685 static ssize_t
stli_memwrite(struct file
*fp
, const char __user
*buf
, size_t count
, loff_t
*offp
);
686 static int stli_memioctl(struct inode
*ip
, struct file
*fp
, unsigned int cmd
, unsigned long arg
);
687 static void stli_brdpoll(stlibrd_t
*brdp
, volatile cdkhdr_t
*hdrp
);
688 static void stli_poll(unsigned long arg
);
689 static int stli_hostcmd(stlibrd_t
*brdp
, stliport_t
*portp
);
690 static int stli_initopen(stlibrd_t
*brdp
, stliport_t
*portp
);
691 static int stli_rawopen(stlibrd_t
*brdp
, stliport_t
*portp
, unsigned long arg
, int wait
);
692 static int stli_rawclose(stlibrd_t
*brdp
, stliport_t
*portp
, unsigned long arg
, int wait
);
693 static int stli_waitcarrier(stlibrd_t
*brdp
, stliport_t
*portp
, struct file
*filp
);
694 static void stli_dohangup(void *arg
);
695 static int stli_setport(stliport_t
*portp
);
696 static int stli_cmdwait(stlibrd_t
*brdp
, stliport_t
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
);
697 static void stli_sendcmd(stlibrd_t
*brdp
, stliport_t
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
);
698 static void stli_dodelaycmd(stliport_t
*portp
, volatile cdkctrl_t
*cp
);
699 static void stli_mkasyport(stliport_t
*portp
, asyport_t
*pp
, struct termios
*tiosp
);
700 static void stli_mkasysigs(asysigs_t
*sp
, int dtr
, int rts
);
701 static long stli_mktiocm(unsigned long sigvalue
);
702 static void stli_read(stlibrd_t
*brdp
, stliport_t
*portp
);
703 static int stli_getserial(stliport_t
*portp
, struct serial_struct __user
*sp
);
704 static int stli_setserial(stliport_t
*portp
, struct serial_struct __user
*sp
);
705 static int stli_getbrdstats(combrd_t __user
*bp
);
706 static int stli_getportstats(stliport_t
*portp
, comstats_t __user
*cp
);
707 static int stli_portcmdstats(stliport_t
*portp
);
708 static int stli_clrportstats(stliport_t
*portp
, comstats_t __user
*cp
);
709 static int stli_getportstruct(stliport_t __user
*arg
);
710 static int stli_getbrdstruct(stlibrd_t __user
*arg
);
711 static void *stli_memalloc(int len
);
712 static stlibrd_t
*stli_allocbrd(void);
714 static void stli_ecpinit(stlibrd_t
*brdp
);
715 static void stli_ecpenable(stlibrd_t
*brdp
);
716 static void stli_ecpdisable(stlibrd_t
*brdp
);
717 static char *stli_ecpgetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
);
718 static void stli_ecpreset(stlibrd_t
*brdp
);
719 static void stli_ecpintr(stlibrd_t
*brdp
);
720 static void stli_ecpeiinit(stlibrd_t
*brdp
);
721 static void stli_ecpeienable(stlibrd_t
*brdp
);
722 static void stli_ecpeidisable(stlibrd_t
*brdp
);
723 static char *stli_ecpeigetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
);
724 static void stli_ecpeireset(stlibrd_t
*brdp
);
725 static void stli_ecpmcenable(stlibrd_t
*brdp
);
726 static void stli_ecpmcdisable(stlibrd_t
*brdp
);
727 static char *stli_ecpmcgetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
);
728 static void stli_ecpmcreset(stlibrd_t
*brdp
);
729 static void stli_ecppciinit(stlibrd_t
*brdp
);
730 static char *stli_ecppcigetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
);
731 static void stli_ecppcireset(stlibrd_t
*brdp
);
733 static void stli_onbinit(stlibrd_t
*brdp
);
734 static void stli_onbenable(stlibrd_t
*brdp
);
735 static void stli_onbdisable(stlibrd_t
*brdp
);
736 static char *stli_onbgetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
);
737 static void stli_onbreset(stlibrd_t
*brdp
);
738 static void stli_onbeinit(stlibrd_t
*brdp
);
739 static void stli_onbeenable(stlibrd_t
*brdp
);
740 static void stli_onbedisable(stlibrd_t
*brdp
);
741 static char *stli_onbegetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
);
742 static void stli_onbereset(stlibrd_t
*brdp
);
743 static void stli_bbyinit(stlibrd_t
*brdp
);
744 static char *stli_bbygetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
);
745 static void stli_bbyreset(stlibrd_t
*brdp
);
746 static void stli_stalinit(stlibrd_t
*brdp
);
747 static char *stli_stalgetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
);
748 static void stli_stalreset(stlibrd_t
*brdp
);
750 static stliport_t
*stli_getport(int brdnr
, int panelnr
, int portnr
);
752 static int stli_initecp(stlibrd_t
*brdp
);
753 static int stli_initonb(stlibrd_t
*brdp
);
754 static int stli_eisamemprobe(stlibrd_t
*brdp
);
755 static int stli_initports(stlibrd_t
*brdp
);
758 static int stli_initpcibrd(int brdtype
, struct pci_dev
*devp
);
761 /*****************************************************************************/
764 * Define the driver info for a user level shared memory device. This
765 * device will work sort of like the /dev/kmem device - except that it
766 * will give access to the shared memory on the Stallion intelligent
767 * board. This is also a very useful debugging tool.
769 static struct file_operations stli_fsiomem
= {
770 .owner
= THIS_MODULE
,
771 .read
= stli_memread
,
772 .write
= stli_memwrite
,
773 .ioctl
= stli_memioctl
,
776 /*****************************************************************************/
779 * Define a timer_list entry for our poll routine. The slave board
780 * is polled every so often to see if anything needs doing. This is
781 * much cheaper on host cpu than using interrupts. It turns out to
782 * not increase character latency by much either...
784 static struct timer_list stli_timerlist
= TIMER_INITIALIZER(stli_poll
, 0, 0);
786 static int stli_timeron
;
789 * Define the calculation for the timeout routine.
791 #define STLI_TIMEOUT (jiffies + 1)
793 /*****************************************************************************/
795 static struct class *istallion_class
;
800 * Loadable module initialization stuff.
803 static int __init
istallion_module_init(void)
808 printk("init_module()\n");
814 restore_flags(flags
);
819 /*****************************************************************************/
821 static void __exit
istallion_module_exit(void)
829 printk("cleanup_module()\n");
832 printk(KERN_INFO
"Unloading %s: version %s\n", stli_drvtitle
,
839 * Free up all allocated resources used by the ports. This includes
840 * memory and interrupts.
844 del_timer(&stli_timerlist
);
847 i
= tty_unregister_driver(stli_serial
);
849 printk("STALLION: failed to un-register tty driver, "
851 restore_flags(flags
);
854 put_tty_driver(stli_serial
);
855 for (i
= 0; i
< 4; i
++) {
856 devfs_remove("staliomem/%d", i
);
857 class_device_destroy(istallion_class
, MKDEV(STL_SIOMEMMAJOR
, i
));
859 devfs_remove("staliomem");
860 class_destroy(istallion_class
);
861 if ((i
= unregister_chrdev(STL_SIOMEMMAJOR
, "staliomem")))
862 printk("STALLION: failed to un-register serial memory device, "
864 if (stli_tmpwritebuf
!= (char *) NULL
)
865 kfree(stli_tmpwritebuf
);
866 if (stli_txcookbuf
!= (char *) NULL
)
867 kfree(stli_txcookbuf
);
869 for (i
= 0; (i
< stli_nrbrds
); i
++) {
870 if ((brdp
= stli_brds
[i
]) == (stlibrd_t
*) NULL
)
872 for (j
= 0; (j
< STL_MAXPORTS
); j
++) {
873 portp
= brdp
->ports
[j
];
874 if (portp
!= (stliport_t
*) NULL
) {
875 if (portp
->tty
!= (struct tty_struct
*) NULL
)
876 tty_hangup(portp
->tty
);
881 iounmap(brdp
->membase
);
882 if (brdp
->iosize
> 0)
883 release_region(brdp
->iobase
, brdp
->iosize
);
885 stli_brds
[i
] = (stlibrd_t
*) NULL
;
888 restore_flags(flags
);
891 module_init(istallion_module_init
);
892 module_exit(istallion_module_exit
);
894 /*****************************************************************************/
897 * Check for any arguments passed in on the module load command line.
900 static void stli_argbrds(void)
907 printk("stli_argbrds()\n");
910 nrargs
= sizeof(stli_brdsp
) / sizeof(char **);
912 for (i
= stli_nrbrds
; (i
< nrargs
); i
++) {
913 memset(&conf
, 0, sizeof(conf
));
914 if (stli_parsebrd(&conf
, stli_brdsp
[i
]) == 0)
916 if ((brdp
= stli_allocbrd()) == (stlibrd_t
*) NULL
)
920 brdp
->brdtype
= conf
.brdtype
;
921 brdp
->iobase
= conf
.ioaddr1
;
922 brdp
->memaddr
= conf
.memaddr
;
927 /*****************************************************************************/
930 * Convert an ascii string number into an unsigned long.
933 static unsigned long stli_atol(char *str
)
941 if ((*sp
== '0') && (*(sp
+1) == 'x')) {
944 } else if (*sp
== '0') {
951 for (; (*sp
!= 0); sp
++) {
952 c
= (*sp
> '9') ? (TOLOWER(*sp
) - 'a' + 10) : (*sp
- '0');
953 if ((c
< 0) || (c
>= base
)) {
954 printk("STALLION: invalid argument %s\n", str
);
958 val
= (val
* base
) + c
;
963 /*****************************************************************************/
966 * Parse the supplied argument string, into the board conf struct.
969 static int stli_parsebrd(stlconf_t
*confp
, char **argp
)
975 printk("stli_parsebrd(confp=%x,argp=%x)\n", (int) confp
, (int) argp
);
978 if ((argp
[0] == (char *) NULL
) || (*argp
[0] == 0))
981 for (sp
= argp
[0], i
= 0; ((*sp
!= 0) && (i
< 25)); sp
++, i
++)
984 nrbrdnames
= sizeof(stli_brdstr
) / sizeof(stlibrdtype_t
);
985 for (i
= 0; (i
< nrbrdnames
); i
++) {
986 if (strcmp(stli_brdstr
[i
].name
, argp
[0]) == 0)
989 if (i
>= nrbrdnames
) {
990 printk("STALLION: unknown board name, %s?\n", argp
[0]);
994 confp
->brdtype
= stli_brdstr
[i
].type
;
995 if ((argp
[1] != (char *) NULL
) && (*argp
[1] != 0))
996 confp
->ioaddr1
= stli_atol(argp
[1]);
997 if ((argp
[2] != (char *) NULL
) && (*argp
[2] != 0))
998 confp
->memaddr
= stli_atol(argp
[2]);
1004 /*****************************************************************************/
1007 * Local driver kernel malloc routine.
1010 static void *stli_memalloc(int len
)
1012 return((void *) kmalloc(len
, GFP_KERNEL
));
1015 /*****************************************************************************/
1017 static int stli_open(struct tty_struct
*tty
, struct file
*filp
)
1021 unsigned int minordev
;
1022 int brdnr
, portnr
, rc
;
1025 printk("stli_open(tty=%x,filp=%x): device=%s\n", (int) tty
,
1026 (int) filp
, tty
->name
);
1029 minordev
= tty
->index
;
1030 brdnr
= MINOR2BRD(minordev
);
1031 if (brdnr
>= stli_nrbrds
)
1033 brdp
= stli_brds
[brdnr
];
1034 if (brdp
== (stlibrd_t
*) NULL
)
1036 if ((brdp
->state
& BST_STARTED
) == 0)
1038 portnr
= MINOR2PORT(minordev
);
1039 if ((portnr
< 0) || (portnr
> brdp
->nrports
))
1042 portp
= brdp
->ports
[portnr
];
1043 if (portp
== (stliport_t
*) NULL
)
1045 if (portp
->devnr
< 1)
1050 * Check if this port is in the middle of closing. If so then wait
1051 * until it is closed then return error status based on flag settings.
1052 * The sleep here does not need interrupt protection since the wakeup
1053 * for it is done with the same context.
1055 if (portp
->flags
& ASYNC_CLOSING
) {
1056 interruptible_sleep_on(&portp
->close_wait
);
1057 if (portp
->flags
& ASYNC_HUP_NOTIFY
)
1059 return(-ERESTARTSYS
);
1063 * On the first open of the device setup the port hardware, and
1064 * initialize the per port data structure. Since initializing the port
1065 * requires several commands to the board we will need to wait for any
1066 * other open that is already initializing the port.
1069 tty
->driver_data
= portp
;
1072 wait_event_interruptible(portp
->raw_wait
,
1073 !test_bit(ST_INITIALIZING
, &portp
->state
));
1074 if (signal_pending(current
))
1075 return(-ERESTARTSYS
);
1077 if ((portp
->flags
& ASYNC_INITIALIZED
) == 0) {
1078 set_bit(ST_INITIALIZING
, &portp
->state
);
1079 if ((rc
= stli_initopen(brdp
, portp
)) >= 0) {
1080 portp
->flags
|= ASYNC_INITIALIZED
;
1081 clear_bit(TTY_IO_ERROR
, &tty
->flags
);
1083 clear_bit(ST_INITIALIZING
, &portp
->state
);
1084 wake_up_interruptible(&portp
->raw_wait
);
1090 * Check if this port is in the middle of closing. If so then wait
1091 * until it is closed then return error status, based on flag settings.
1092 * The sleep here does not need interrupt protection since the wakeup
1093 * for it is done with the same context.
1095 if (portp
->flags
& ASYNC_CLOSING
) {
1096 interruptible_sleep_on(&portp
->close_wait
);
1097 if (portp
->flags
& ASYNC_HUP_NOTIFY
)
1099 return(-ERESTARTSYS
);
1103 * Based on type of open being done check if it can overlap with any
1104 * previous opens still in effect. If we are a normal serial device
1105 * then also we might have to wait for carrier.
1107 if (!(filp
->f_flags
& O_NONBLOCK
)) {
1108 if ((rc
= stli_waitcarrier(brdp
, portp
, filp
)) != 0)
1111 portp
->flags
|= ASYNC_NORMAL_ACTIVE
;
1115 /*****************************************************************************/
1117 static void stli_close(struct tty_struct
*tty
, struct file
*filp
)
1121 unsigned long flags
;
1124 printk("stli_close(tty=%x,filp=%x)\n", (int) tty
, (int) filp
);
1127 portp
= tty
->driver_data
;
1128 if (portp
== (stliport_t
*) NULL
)
1133 if (tty_hung_up_p(filp
)) {
1134 restore_flags(flags
);
1137 if ((tty
->count
== 1) && (portp
->refcount
!= 1))
1138 portp
->refcount
= 1;
1139 if (portp
->refcount
-- > 1) {
1140 restore_flags(flags
);
1144 portp
->flags
|= ASYNC_CLOSING
;
1147 * May want to wait for data to drain before closing. The BUSY flag
1148 * keeps track of whether we are still transmitting or not. It is
1149 * updated by messages from the slave - indicating when all chars
1150 * really have drained.
1152 if (tty
== stli_txcooktty
)
1153 stli_flushchars(tty
);
1155 if (portp
->closing_wait
!= ASYNC_CLOSING_WAIT_NONE
)
1156 tty_wait_until_sent(tty
, portp
->closing_wait
);
1158 portp
->flags
&= ~ASYNC_INITIALIZED
;
1159 brdp
= stli_brds
[portp
->brdnr
];
1160 stli_rawclose(brdp
, portp
, 0, 0);
1161 if (tty
->termios
->c_cflag
& HUPCL
) {
1162 stli_mkasysigs(&portp
->asig
, 0, 0);
1163 if (test_bit(ST_CMDING
, &portp
->state
))
1164 set_bit(ST_DOSIGS
, &portp
->state
);
1166 stli_sendcmd(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
1167 sizeof(asysigs_t
), 0);
1169 clear_bit(ST_TXBUSY
, &portp
->state
);
1170 clear_bit(ST_RXSTOP
, &portp
->state
);
1171 set_bit(TTY_IO_ERROR
, &tty
->flags
);
1172 if (tty
->ldisc
.flush_buffer
)
1173 (tty
->ldisc
.flush_buffer
)(tty
);
1174 set_bit(ST_DOFLUSHRX
, &portp
->state
);
1175 stli_flushbuffer(tty
);
1178 portp
->tty
= (struct tty_struct
*) NULL
;
1180 if (portp
->openwaitcnt
) {
1181 if (portp
->close_delay
)
1182 msleep_interruptible(jiffies_to_msecs(portp
->close_delay
));
1183 wake_up_interruptible(&portp
->open_wait
);
1186 portp
->flags
&= ~(ASYNC_NORMAL_ACTIVE
|ASYNC_CLOSING
);
1187 wake_up_interruptible(&portp
->close_wait
);
1188 restore_flags(flags
);
1191 /*****************************************************************************/
1194 * Carry out first open operations on a port. This involves a number of
1195 * commands to be sent to the slave. We need to open the port, set the
1196 * notification events, set the initial port settings, get and set the
1197 * initial signal values. We sleep and wait in between each one. But
1198 * this still all happens pretty quickly.
1201 static int stli_initopen(stlibrd_t
*brdp
, stliport_t
*portp
)
1203 struct tty_struct
*tty
;
1209 printk("stli_initopen(brdp=%x,portp=%x)\n", (int) brdp
, (int) portp
);
1212 if ((rc
= stli_rawopen(brdp
, portp
, 0, 1)) < 0)
1215 memset(&nt
, 0, sizeof(asynotify_t
));
1216 nt
.data
= (DT_TXLOW
| DT_TXEMPTY
| DT_RXBUSY
| DT_RXBREAK
);
1218 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETNOTIFY
, &nt
,
1219 sizeof(asynotify_t
), 0)) < 0)
1223 if (tty
== (struct tty_struct
*) NULL
)
1225 stli_mkasyport(portp
, &aport
, tty
->termios
);
1226 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETPORT
, &aport
,
1227 sizeof(asyport_t
), 0)) < 0)
1230 set_bit(ST_GETSIGS
, &portp
->state
);
1231 if ((rc
= stli_cmdwait(brdp
, portp
, A_GETSIGNALS
, &portp
->asig
,
1232 sizeof(asysigs_t
), 1)) < 0)
1234 if (test_and_clear_bit(ST_GETSIGS
, &portp
->state
))
1235 portp
->sigs
= stli_mktiocm(portp
->asig
.sigvalue
);
1236 stli_mkasysigs(&portp
->asig
, 1, 1);
1237 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
1238 sizeof(asysigs_t
), 0)) < 0)
1244 /*****************************************************************************/
1247 * Send an open message to the slave. This will sleep waiting for the
1248 * acknowledgement, so must have user context. We need to co-ordinate
1249 * with close events here, since we don't want open and close events
1253 static int stli_rawopen(stlibrd_t
*brdp
, stliport_t
*portp
, unsigned long arg
, int wait
)
1255 volatile cdkhdr_t
*hdrp
;
1256 volatile cdkctrl_t
*cp
;
1257 volatile unsigned char *bits
;
1258 unsigned long flags
;
1262 printk("stli_rawopen(brdp=%x,portp=%x,arg=%x,wait=%d)\n",
1263 (int) brdp
, (int) portp
, (int) arg
, wait
);
1267 * Send a message to the slave to open this port.
1273 * Slave is already closing this port. This can happen if a hangup
1274 * occurs on this port. So we must wait until it is complete. The
1275 * order of opens and closes may not be preserved across shared
1276 * memory, so we must wait until it is complete.
1278 wait_event_interruptible(portp
->raw_wait
,
1279 !test_bit(ST_CLOSING
, &portp
->state
));
1280 if (signal_pending(current
)) {
1281 restore_flags(flags
);
1282 return -ERESTARTSYS
;
1286 * Everything is ready now, so write the open message into shared
1287 * memory. Once the message is in set the service bits to say that
1288 * this port wants service.
1291 cp
= &((volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->ctrl
;
1294 hdrp
= (volatile cdkhdr_t
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1295 bits
= ((volatile unsigned char *) hdrp
) + brdp
->slaveoffset
+
1297 *bits
|= portp
->portbit
;
1301 restore_flags(flags
);
1306 * Slave is in action, so now we must wait for the open acknowledgment
1310 set_bit(ST_OPENING
, &portp
->state
);
1311 wait_event_interruptible(portp
->raw_wait
,
1312 !test_bit(ST_OPENING
, &portp
->state
));
1313 if (signal_pending(current
))
1315 restore_flags(flags
);
1317 if ((rc
== 0) && (portp
->rc
!= 0))
1322 /*****************************************************************************/
1325 * Send a close message to the slave. Normally this will sleep waiting
1326 * for the acknowledgement, but if wait parameter is 0 it will not. If
1327 * wait is true then must have user context (to sleep).
1330 static int stli_rawclose(stlibrd_t
*brdp
, stliport_t
*portp
, unsigned long arg
, int wait
)
1332 volatile cdkhdr_t
*hdrp
;
1333 volatile cdkctrl_t
*cp
;
1334 volatile unsigned char *bits
;
1335 unsigned long flags
;
1339 printk("stli_rawclose(brdp=%x,portp=%x,arg=%x,wait=%d)\n",
1340 (int) brdp
, (int) portp
, (int) arg
, wait
);
1347 * Slave is already closing this port. This can happen if a hangup
1348 * occurs on this port.
1351 wait_event_interruptible(portp
->raw_wait
,
1352 !test_bit(ST_CLOSING
, &portp
->state
));
1353 if (signal_pending(current
)) {
1354 restore_flags(flags
);
1355 return -ERESTARTSYS
;
1360 * Write the close command into shared memory.
1363 cp
= &((volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->ctrl
;
1366 hdrp
= (volatile cdkhdr_t
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1367 bits
= ((volatile unsigned char *) hdrp
) + brdp
->slaveoffset
+
1369 *bits
|= portp
->portbit
;
1372 set_bit(ST_CLOSING
, &portp
->state
);
1374 restore_flags(flags
);
1379 * Slave is in action, so now we must wait for the open acknowledgment
1383 wait_event_interruptible(portp
->raw_wait
,
1384 !test_bit(ST_CLOSING
, &portp
->state
));
1385 if (signal_pending(current
))
1387 restore_flags(flags
);
1389 if ((rc
== 0) && (portp
->rc
!= 0))
1394 /*****************************************************************************/
1397 * Send a command to the slave and wait for the response. This must
1398 * have user context (it sleeps). This routine is generic in that it
1399 * can send any type of command. Its purpose is to wait for that command
1400 * to complete (as opposed to initiating the command then returning).
1403 static int stli_cmdwait(stlibrd_t
*brdp
, stliport_t
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
)
1405 unsigned long flags
;
1408 printk("stli_cmdwait(brdp=%x,portp=%x,cmd=%x,arg=%x,size=%d,"
1409 "copyback=%d)\n", (int) brdp
, (int) portp
, (int) cmd
,
1410 (int) arg
, size
, copyback
);
1415 wait_event_interruptible(portp
->raw_wait
,
1416 !test_bit(ST_CMDING
, &portp
->state
));
1417 if (signal_pending(current
)) {
1418 restore_flags(flags
);
1419 return -ERESTARTSYS
;
1422 stli_sendcmd(brdp
, portp
, cmd
, arg
, size
, copyback
);
1424 wait_event_interruptible(portp
->raw_wait
,
1425 !test_bit(ST_CMDING
, &portp
->state
));
1426 if (signal_pending(current
)) {
1427 restore_flags(flags
);
1428 return -ERESTARTSYS
;
1430 restore_flags(flags
);
1437 /*****************************************************************************/
1440 * Send the termios settings for this port to the slave. This sleeps
1441 * waiting for the command to complete - so must have user context.
1444 static int stli_setport(stliport_t
*portp
)
1450 printk("stli_setport(portp=%x)\n", (int) portp
);
1453 if (portp
== (stliport_t
*) NULL
)
1455 if (portp
->tty
== (struct tty_struct
*) NULL
)
1457 if ((portp
->brdnr
< 0) && (portp
->brdnr
>= stli_nrbrds
))
1459 brdp
= stli_brds
[portp
->brdnr
];
1460 if (brdp
== (stlibrd_t
*) NULL
)
1463 stli_mkasyport(portp
, &aport
, portp
->tty
->termios
);
1464 return(stli_cmdwait(brdp
, portp
, A_SETPORT
, &aport
, sizeof(asyport_t
), 0));
1467 /*****************************************************************************/
1470 * Possibly need to wait for carrier (DCD signal) to come high. Say
1471 * maybe because if we are clocal then we don't need to wait...
1474 static int stli_waitcarrier(stlibrd_t
*brdp
, stliport_t
*portp
, struct file
*filp
)
1476 unsigned long flags
;
1480 printk("stli_waitcarrier(brdp=%x,portp=%x,filp=%x)\n",
1481 (int) brdp
, (int) portp
, (int) filp
);
1487 if (portp
->tty
->termios
->c_cflag
& CLOCAL
)
1492 portp
->openwaitcnt
++;
1493 if (! tty_hung_up_p(filp
))
1497 stli_mkasysigs(&portp
->asig
, 1, 1);
1498 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETSIGNALS
,
1499 &portp
->asig
, sizeof(asysigs_t
), 0)) < 0)
1501 if (tty_hung_up_p(filp
) ||
1502 ((portp
->flags
& ASYNC_INITIALIZED
) == 0)) {
1503 if (portp
->flags
& ASYNC_HUP_NOTIFY
)
1509 if (((portp
->flags
& ASYNC_CLOSING
) == 0) &&
1510 (doclocal
|| (portp
->sigs
& TIOCM_CD
))) {
1513 if (signal_pending(current
)) {
1517 interruptible_sleep_on(&portp
->open_wait
);
1520 if (! tty_hung_up_p(filp
))
1522 portp
->openwaitcnt
--;
1523 restore_flags(flags
);
1528 /*****************************************************************************/
1531 * Write routine. Take the data and put it in the shared memory ring
1532 * queue. If port is not already sending chars then need to mark the
1533 * service bits for this port.
1536 static int stli_write(struct tty_struct
*tty
, const unsigned char *buf
, int count
)
1538 volatile cdkasy_t
*ap
;
1539 volatile cdkhdr_t
*hdrp
;
1540 volatile unsigned char *bits
;
1541 unsigned char *shbuf
, *chbuf
;
1544 unsigned int len
, stlen
, head
, tail
, size
;
1545 unsigned long flags
;
1548 printk("stli_write(tty=%x,buf=%x,count=%d)\n",
1549 (int) tty
, (int) buf
, count
);
1552 if ((tty
== (struct tty_struct
*) NULL
) ||
1553 (stli_tmpwritebuf
== (char *) NULL
))
1555 if (tty
== stli_txcooktty
)
1556 stli_flushchars(tty
);
1557 portp
= tty
->driver_data
;
1558 if (portp
== (stliport_t
*) NULL
)
1560 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
1562 brdp
= stli_brds
[portp
->brdnr
];
1563 if (brdp
== (stlibrd_t
*) NULL
)
1565 chbuf
= (unsigned char *) buf
;
1568 * All data is now local, shove as much as possible into shared memory.
1573 ap
= (volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1574 head
= (unsigned int) ap
->txq
.head
;
1575 tail
= (unsigned int) ap
->txq
.tail
;
1576 if (tail
!= ((unsigned int) ap
->txq
.tail
))
1577 tail
= (unsigned int) ap
->txq
.tail
;
1578 size
= portp
->txsize
;
1580 len
= size
- (head
- tail
) - 1;
1581 stlen
= size
- head
;
1583 len
= tail
- head
- 1;
1587 len
= MIN(len
, count
);
1589 shbuf
= (char *) EBRDGETMEMPTR(brdp
, portp
->txoffset
);
1592 stlen
= MIN(len
, stlen
);
1593 memcpy((shbuf
+ head
), chbuf
, stlen
);
1604 ap
= (volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1605 ap
->txq
.head
= head
;
1606 if (test_bit(ST_TXBUSY
, &portp
->state
)) {
1607 if (ap
->changed
.data
& DT_TXEMPTY
)
1608 ap
->changed
.data
&= ~DT_TXEMPTY
;
1610 hdrp
= (volatile cdkhdr_t
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1611 bits
= ((volatile unsigned char *) hdrp
) + brdp
->slaveoffset
+
1613 *bits
|= portp
->portbit
;
1614 set_bit(ST_TXBUSY
, &portp
->state
);
1617 restore_flags(flags
);
1622 /*****************************************************************************/
1625 * Output a single character. We put it into a temporary local buffer
1626 * (for speed) then write out that buffer when the flushchars routine
1627 * is called. There is a safety catch here so that if some other port
1628 * writes chars before the current buffer has been, then we write them
1629 * first them do the new ports.
1632 static void stli_putchar(struct tty_struct
*tty
, unsigned char ch
)
1635 printk("stli_putchar(tty=%x,ch=%x)\n", (int) tty
, (int) ch
);
1638 if (tty
== (struct tty_struct
*) NULL
)
1640 if (tty
!= stli_txcooktty
) {
1641 if (stli_txcooktty
!= (struct tty_struct
*) NULL
)
1642 stli_flushchars(stli_txcooktty
);
1643 stli_txcooktty
= tty
;
1646 stli_txcookbuf
[stli_txcooksize
++] = ch
;
1649 /*****************************************************************************/
1652 * Transfer characters from the local TX cooking buffer to the board.
1653 * We sort of ignore the tty that gets passed in here. We rely on the
1654 * info stored with the TX cook buffer to tell us which port to flush
1655 * the data on. In any case we clean out the TX cook buffer, for re-use
1659 static void stli_flushchars(struct tty_struct
*tty
)
1661 volatile cdkhdr_t
*hdrp
;
1662 volatile unsigned char *bits
;
1663 volatile cdkasy_t
*ap
;
1664 struct tty_struct
*cooktty
;
1667 unsigned int len
, stlen
, head
, tail
, size
, count
, cooksize
;
1668 unsigned char *buf
, *shbuf
;
1669 unsigned long flags
;
1672 printk("stli_flushchars(tty=%x)\n", (int) tty
);
1675 cooksize
= stli_txcooksize
;
1676 cooktty
= stli_txcooktty
;
1677 stli_txcooksize
= 0;
1678 stli_txcookrealsize
= 0;
1679 stli_txcooktty
= (struct tty_struct
*) NULL
;
1681 if (tty
== (struct tty_struct
*) NULL
)
1683 if (cooktty
== (struct tty_struct
*) NULL
)
1690 portp
= tty
->driver_data
;
1691 if (portp
== (stliport_t
*) NULL
)
1693 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
1695 brdp
= stli_brds
[portp
->brdnr
];
1696 if (brdp
== (stlibrd_t
*) NULL
)
1703 ap
= (volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1704 head
= (unsigned int) ap
->txq
.head
;
1705 tail
= (unsigned int) ap
->txq
.tail
;
1706 if (tail
!= ((unsigned int) ap
->txq
.tail
))
1707 tail
= (unsigned int) ap
->txq
.tail
;
1708 size
= portp
->txsize
;
1710 len
= size
- (head
- tail
) - 1;
1711 stlen
= size
- head
;
1713 len
= tail
- head
- 1;
1717 len
= MIN(len
, cooksize
);
1719 shbuf
= (char *) EBRDGETMEMPTR(brdp
, portp
->txoffset
);
1720 buf
= stli_txcookbuf
;
1723 stlen
= MIN(len
, stlen
);
1724 memcpy((shbuf
+ head
), buf
, stlen
);
1735 ap
= (volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1736 ap
->txq
.head
= head
;
1738 if (test_bit(ST_TXBUSY
, &portp
->state
)) {
1739 if (ap
->changed
.data
& DT_TXEMPTY
)
1740 ap
->changed
.data
&= ~DT_TXEMPTY
;
1742 hdrp
= (volatile cdkhdr_t
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1743 bits
= ((volatile unsigned char *) hdrp
) + brdp
->slaveoffset
+
1745 *bits
|= portp
->portbit
;
1746 set_bit(ST_TXBUSY
, &portp
->state
);
1749 restore_flags(flags
);
1752 /*****************************************************************************/
1754 static int stli_writeroom(struct tty_struct
*tty
)
1756 volatile cdkasyrq_t
*rp
;
1759 unsigned int head
, tail
, len
;
1760 unsigned long flags
;
1763 printk("stli_writeroom(tty=%x)\n", (int) tty
);
1766 if (tty
== (struct tty_struct
*) NULL
)
1768 if (tty
== stli_txcooktty
) {
1769 if (stli_txcookrealsize
!= 0) {
1770 len
= stli_txcookrealsize
- stli_txcooksize
;
1775 portp
= tty
->driver_data
;
1776 if (portp
== (stliport_t
*) NULL
)
1778 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
1780 brdp
= stli_brds
[portp
->brdnr
];
1781 if (brdp
== (stlibrd_t
*) NULL
)
1787 rp
= &((volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->txq
;
1788 head
= (unsigned int) rp
->head
;
1789 tail
= (unsigned int) rp
->tail
;
1790 if (tail
!= ((unsigned int) rp
->tail
))
1791 tail
= (unsigned int) rp
->tail
;
1792 len
= (head
>= tail
) ? (portp
->txsize
- (head
- tail
)) : (tail
- head
);
1795 restore_flags(flags
);
1797 if (tty
== stli_txcooktty
) {
1798 stli_txcookrealsize
= len
;
1799 len
-= stli_txcooksize
;
1804 /*****************************************************************************/
1807 * Return the number of characters in the transmit buffer. Normally we
1808 * will return the number of chars in the shared memory ring queue.
1809 * We need to kludge around the case where the shared memory buffer is
1810 * empty but not all characters have drained yet, for this case just
1811 * return that there is 1 character in the buffer!
1814 static int stli_charsinbuffer(struct tty_struct
*tty
)
1816 volatile cdkasyrq_t
*rp
;
1819 unsigned int head
, tail
, len
;
1820 unsigned long flags
;
1823 printk("stli_charsinbuffer(tty=%x)\n", (int) tty
);
1826 if (tty
== (struct tty_struct
*) NULL
)
1828 if (tty
== stli_txcooktty
)
1829 stli_flushchars(tty
);
1830 portp
= tty
->driver_data
;
1831 if (portp
== (stliport_t
*) NULL
)
1833 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
1835 brdp
= stli_brds
[portp
->brdnr
];
1836 if (brdp
== (stlibrd_t
*) NULL
)
1842 rp
= &((volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->txq
;
1843 head
= (unsigned int) rp
->head
;
1844 tail
= (unsigned int) rp
->tail
;
1845 if (tail
!= ((unsigned int) rp
->tail
))
1846 tail
= (unsigned int) rp
->tail
;
1847 len
= (head
>= tail
) ? (head
- tail
) : (portp
->txsize
- (tail
- head
));
1848 if ((len
== 0) && test_bit(ST_TXBUSY
, &portp
->state
))
1851 restore_flags(flags
);
1856 /*****************************************************************************/
1859 * Generate the serial struct info.
1862 static int stli_getserial(stliport_t
*portp
, struct serial_struct __user
*sp
)
1864 struct serial_struct sio
;
1868 printk("stli_getserial(portp=%x,sp=%x)\n", (int) portp
, (int) sp
);
1871 memset(&sio
, 0, sizeof(struct serial_struct
));
1872 sio
.type
= PORT_UNKNOWN
;
1873 sio
.line
= portp
->portnr
;
1875 sio
.flags
= portp
->flags
;
1876 sio
.baud_base
= portp
->baud_base
;
1877 sio
.close_delay
= portp
->close_delay
;
1878 sio
.closing_wait
= portp
->closing_wait
;
1879 sio
.custom_divisor
= portp
->custom_divisor
;
1880 sio
.xmit_fifo_size
= 0;
1883 brdp
= stli_brds
[portp
->brdnr
];
1884 if (brdp
!= (stlibrd_t
*) NULL
)
1885 sio
.port
= brdp
->iobase
;
1887 return copy_to_user(sp
, &sio
, sizeof(struct serial_struct
)) ?
1891 /*****************************************************************************/
1894 * Set port according to the serial struct info.
1895 * At this point we do not do any auto-configure stuff, so we will
1896 * just quietly ignore any requests to change irq, etc.
1899 static int stli_setserial(stliport_t
*portp
, struct serial_struct __user
*sp
)
1901 struct serial_struct sio
;
1905 printk("stli_setserial(portp=%p,sp=%p)\n", portp
, sp
);
1908 if (copy_from_user(&sio
, sp
, sizeof(struct serial_struct
)))
1910 if (!capable(CAP_SYS_ADMIN
)) {
1911 if ((sio
.baud_base
!= portp
->baud_base
) ||
1912 (sio
.close_delay
!= portp
->close_delay
) ||
1913 ((sio
.flags
& ~ASYNC_USR_MASK
) !=
1914 (portp
->flags
& ~ASYNC_USR_MASK
)))
1918 portp
->flags
= (portp
->flags
& ~ASYNC_USR_MASK
) |
1919 (sio
.flags
& ASYNC_USR_MASK
);
1920 portp
->baud_base
= sio
.baud_base
;
1921 portp
->close_delay
= sio
.close_delay
;
1922 portp
->closing_wait
= sio
.closing_wait
;
1923 portp
->custom_divisor
= sio
.custom_divisor
;
1925 if ((rc
= stli_setport(portp
)) < 0)
1930 /*****************************************************************************/
1932 static int stli_tiocmget(struct tty_struct
*tty
, struct file
*file
)
1934 stliport_t
*portp
= tty
->driver_data
;
1938 if (portp
== (stliport_t
*) NULL
)
1940 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
1942 brdp
= stli_brds
[portp
->brdnr
];
1943 if (brdp
== (stlibrd_t
*) NULL
)
1945 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1948 if ((rc
= stli_cmdwait(brdp
, portp
, A_GETSIGNALS
,
1949 &portp
->asig
, sizeof(asysigs_t
), 1)) < 0)
1952 return stli_mktiocm(portp
->asig
.sigvalue
);
1955 static int stli_tiocmset(struct tty_struct
*tty
, struct file
*file
,
1956 unsigned int set
, unsigned int clear
)
1958 stliport_t
*portp
= tty
->driver_data
;
1960 int rts
= -1, dtr
= -1;
1962 if (portp
== (stliport_t
*) NULL
)
1964 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
1966 brdp
= stli_brds
[portp
->brdnr
];
1967 if (brdp
== (stlibrd_t
*) NULL
)
1969 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1972 if (set
& TIOCM_RTS
)
1974 if (set
& TIOCM_DTR
)
1976 if (clear
& TIOCM_RTS
)
1978 if (clear
& TIOCM_DTR
)
1981 stli_mkasysigs(&portp
->asig
, dtr
, rts
);
1983 return stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
1984 sizeof(asysigs_t
), 0);
1987 static int stli_ioctl(struct tty_struct
*tty
, struct file
*file
, unsigned int cmd
, unsigned long arg
)
1993 void __user
*argp
= (void __user
*)arg
;
1996 printk("stli_ioctl(tty=%x,file=%x,cmd=%x,arg=%x)\n",
1997 (int) tty
, (int) file
, cmd
, (int) arg
);
2000 if (tty
== (struct tty_struct
*) NULL
)
2002 portp
= tty
->driver_data
;
2003 if (portp
== (stliport_t
*) NULL
)
2005 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
2007 brdp
= stli_brds
[portp
->brdnr
];
2008 if (brdp
== (stlibrd_t
*) NULL
)
2011 if ((cmd
!= TIOCGSERIAL
) && (cmd
!= TIOCSSERIAL
) &&
2012 (cmd
!= COM_GETPORTSTATS
) && (cmd
!= COM_CLRPORTSTATS
)) {
2013 if (tty
->flags
& (1 << TTY_IO_ERROR
))
2021 rc
= put_user(((tty
->termios
->c_cflag
& CLOCAL
) ? 1 : 0),
2022 (unsigned __user
*) arg
);
2025 if ((rc
= get_user(ival
, (unsigned __user
*) arg
)) == 0)
2026 tty
->termios
->c_cflag
=
2027 (tty
->termios
->c_cflag
& ~CLOCAL
) |
2028 (ival
? CLOCAL
: 0);
2031 rc
= stli_getserial(portp
, argp
);
2034 rc
= stli_setserial(portp
, argp
);
2037 rc
= put_user(portp
->pflag
, (unsigned __user
*)argp
);
2040 if ((rc
= get_user(portp
->pflag
, (unsigned __user
*)argp
)) == 0)
2041 stli_setport(portp
);
2043 case COM_GETPORTSTATS
:
2044 rc
= stli_getportstats(portp
, argp
);
2046 case COM_CLRPORTSTATS
:
2047 rc
= stli_clrportstats(portp
, argp
);
2053 case TIOCSERGSTRUCT
:
2054 case TIOCSERGETMULTI
:
2055 case TIOCSERSETMULTI
:
2064 /*****************************************************************************/
2067 * This routine assumes that we have user context and can sleep.
2068 * Looks like it is true for the current ttys implementation..!!
2071 static void stli_settermios(struct tty_struct
*tty
, struct termios
*old
)
2075 struct termios
*tiosp
;
2079 printk("stli_settermios(tty=%x,old=%x)\n", (int) tty
, (int) old
);
2082 if (tty
== (struct tty_struct
*) NULL
)
2084 portp
= tty
->driver_data
;
2085 if (portp
== (stliport_t
*) NULL
)
2087 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
2089 brdp
= stli_brds
[portp
->brdnr
];
2090 if (brdp
== (stlibrd_t
*) NULL
)
2093 tiosp
= tty
->termios
;
2094 if ((tiosp
->c_cflag
== old
->c_cflag
) &&
2095 (tiosp
->c_iflag
== old
->c_iflag
))
2098 stli_mkasyport(portp
, &aport
, tiosp
);
2099 stli_cmdwait(brdp
, portp
, A_SETPORT
, &aport
, sizeof(asyport_t
), 0);
2100 stli_mkasysigs(&portp
->asig
, ((tiosp
->c_cflag
& CBAUD
) ? 1 : 0), -1);
2101 stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
2102 sizeof(asysigs_t
), 0);
2103 if ((old
->c_cflag
& CRTSCTS
) && ((tiosp
->c_cflag
& CRTSCTS
) == 0))
2104 tty
->hw_stopped
= 0;
2105 if (((old
->c_cflag
& CLOCAL
) == 0) && (tiosp
->c_cflag
& CLOCAL
))
2106 wake_up_interruptible(&portp
->open_wait
);
2109 /*****************************************************************************/
2112 * Attempt to flow control who ever is sending us data. We won't really
2113 * do any flow control action here. We can't directly, and even if we
2114 * wanted to we would have to send a command to the slave. The slave
2115 * knows how to flow control, and will do so when its buffers reach its
2116 * internal high water marks. So what we will do is set a local state
2117 * bit that will stop us sending any RX data up from the poll routine
2118 * (which is the place where RX data from the slave is handled).
2121 static void stli_throttle(struct tty_struct
*tty
)
2126 printk("stli_throttle(tty=%x)\n", (int) tty
);
2129 if (tty
== (struct tty_struct
*) NULL
)
2131 portp
= tty
->driver_data
;
2132 if (portp
== (stliport_t
*) NULL
)
2135 set_bit(ST_RXSTOP
, &portp
->state
);
2138 /*****************************************************************************/
2141 * Unflow control the device sending us data... That means that all
2142 * we have to do is clear the RXSTOP state bit. The next poll call
2143 * will then be able to pass the RX data back up.
2146 static void stli_unthrottle(struct tty_struct
*tty
)
2151 printk("stli_unthrottle(tty=%x)\n", (int) tty
);
2154 if (tty
== (struct tty_struct
*) NULL
)
2156 portp
= tty
->driver_data
;
2157 if (portp
== (stliport_t
*) NULL
)
2160 clear_bit(ST_RXSTOP
, &portp
->state
);
2163 /*****************************************************************************/
2166 * Stop the transmitter. Basically to do this we will just turn TX
2170 static void stli_stop(struct tty_struct
*tty
)
2177 printk("stli_stop(tty=%x)\n", (int) tty
);
2180 if (tty
== (struct tty_struct
*) NULL
)
2182 portp
= tty
->driver_data
;
2183 if (portp
== (stliport_t
*) NULL
)
2185 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
2187 brdp
= stli_brds
[portp
->brdnr
];
2188 if (brdp
== (stlibrd_t
*) NULL
)
2191 memset(&actrl
, 0, sizeof(asyctrl_t
));
2192 actrl
.txctrl
= CT_STOPFLOW
;
2194 stli_cmdwait(brdp
, portp
, A_PORTCTRL
, &actrl
, sizeof(asyctrl_t
), 0);
2198 /*****************************************************************************/
2201 * Start the transmitter again. Just turn TX interrupts back on.
2204 static void stli_start(struct tty_struct
*tty
)
2211 printk("stli_start(tty=%x)\n", (int) tty
);
2214 if (tty
== (struct tty_struct
*) NULL
)
2216 portp
= tty
->driver_data
;
2217 if (portp
== (stliport_t
*) NULL
)
2219 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
2221 brdp
= stli_brds
[portp
->brdnr
];
2222 if (brdp
== (stlibrd_t
*) NULL
)
2225 memset(&actrl
, 0, sizeof(asyctrl_t
));
2226 actrl
.txctrl
= CT_STARTFLOW
;
2228 stli_cmdwait(brdp
, portp
, A_PORTCTRL
, &actrl
, sizeof(asyctrl_t
), 0);
2232 /*****************************************************************************/
2235 * Scheduler called hang up routine. This is called from the scheduler,
2236 * not direct from the driver "poll" routine. We can't call it there
2237 * since the real local hangup code will enable/disable the board and
2238 * other things that we can't do while handling the poll. Much easier
2239 * to deal with it some time later (don't really care when, hangups
2240 * aren't that time critical).
2243 static void stli_dohangup(void *arg
)
2248 printk(KERN_DEBUG
"stli_dohangup(portp=%x)\n", (int) arg
);
2252 * FIXME: There's a module removal race here: tty_hangup
2253 * calls schedule_work which will call into this
2256 portp
= (stliport_t
*) arg
;
2257 if (portp
!= (stliport_t
*) NULL
) {
2258 if (portp
->tty
!= (struct tty_struct
*) NULL
) {
2259 tty_hangup(portp
->tty
);
2264 /*****************************************************************************/
2267 * Hangup this port. This is pretty much like closing the port, only
2268 * a little more brutal. No waiting for data to drain. Shutdown the
2269 * port and maybe drop signals. This is rather tricky really. We want
2270 * to close the port as well.
2273 static void stli_hangup(struct tty_struct
*tty
)
2277 unsigned long flags
;
2280 printk(KERN_DEBUG
"stli_hangup(tty=%x)\n", (int) tty
);
2283 if (tty
== (struct tty_struct
*) NULL
)
2285 portp
= tty
->driver_data
;
2286 if (portp
== (stliport_t
*) NULL
)
2288 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
2290 brdp
= stli_brds
[portp
->brdnr
];
2291 if (brdp
== (stlibrd_t
*) NULL
)
2294 portp
->flags
&= ~ASYNC_INITIALIZED
;
2298 if (! test_bit(ST_CLOSING
, &portp
->state
))
2299 stli_rawclose(brdp
, portp
, 0, 0);
2300 if (tty
->termios
->c_cflag
& HUPCL
) {
2301 stli_mkasysigs(&portp
->asig
, 0, 0);
2302 if (test_bit(ST_CMDING
, &portp
->state
)) {
2303 set_bit(ST_DOSIGS
, &portp
->state
);
2304 set_bit(ST_DOFLUSHTX
, &portp
->state
);
2305 set_bit(ST_DOFLUSHRX
, &portp
->state
);
2307 stli_sendcmd(brdp
, portp
, A_SETSIGNALSF
,
2308 &portp
->asig
, sizeof(asysigs_t
), 0);
2311 restore_flags(flags
);
2313 clear_bit(ST_TXBUSY
, &portp
->state
);
2314 clear_bit(ST_RXSTOP
, &portp
->state
);
2315 set_bit(TTY_IO_ERROR
, &tty
->flags
);
2316 portp
->tty
= (struct tty_struct
*) NULL
;
2317 portp
->flags
&= ~ASYNC_NORMAL_ACTIVE
;
2318 portp
->refcount
= 0;
2319 wake_up_interruptible(&portp
->open_wait
);
2322 /*****************************************************************************/
2325 * Flush characters from the lower buffer. We may not have user context
2326 * so we cannot sleep waiting for it to complete. Also we need to check
2327 * if there is chars for this port in the TX cook buffer, and flush them
2331 static void stli_flushbuffer(struct tty_struct
*tty
)
2335 unsigned long ftype
, flags
;
2338 printk(KERN_DEBUG
"stli_flushbuffer(tty=%x)\n", (int) tty
);
2341 if (tty
== (struct tty_struct
*) NULL
)
2343 portp
= tty
->driver_data
;
2344 if (portp
== (stliport_t
*) NULL
)
2346 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
2348 brdp
= stli_brds
[portp
->brdnr
];
2349 if (brdp
== (stlibrd_t
*) NULL
)
2354 if (tty
== stli_txcooktty
) {
2355 stli_txcooktty
= (struct tty_struct
*) NULL
;
2356 stli_txcooksize
= 0;
2357 stli_txcookrealsize
= 0;
2359 if (test_bit(ST_CMDING
, &portp
->state
)) {
2360 set_bit(ST_DOFLUSHTX
, &portp
->state
);
2363 if (test_bit(ST_DOFLUSHRX
, &portp
->state
)) {
2365 clear_bit(ST_DOFLUSHRX
, &portp
->state
);
2367 stli_sendcmd(brdp
, portp
, A_FLUSH
, &ftype
,
2368 sizeof(unsigned long), 0);
2370 restore_flags(flags
);
2372 wake_up_interruptible(&tty
->write_wait
);
2373 if ((tty
->flags
& (1 << TTY_DO_WRITE_WAKEUP
)) &&
2374 tty
->ldisc
.write_wakeup
)
2375 (tty
->ldisc
.write_wakeup
)(tty
);
2378 /*****************************************************************************/
2380 static void stli_breakctl(struct tty_struct
*tty
, int state
)
2385 /* long savestate, savetime; */
2388 printk(KERN_DEBUG
"stli_breakctl(tty=%x,state=%d)\n", (int) tty
, state
);
2391 if (tty
== (struct tty_struct
*) NULL
)
2393 portp
= tty
->driver_data
;
2394 if (portp
== (stliport_t
*) NULL
)
2396 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
2398 brdp
= stli_brds
[portp
->brdnr
];
2399 if (brdp
== (stlibrd_t
*) NULL
)
2403 * Due to a bug in the tty send_break() code we need to preserve
2404 * the current process state and timeout...
2405 savetime = current->timeout;
2406 savestate = current->state;
2409 arg
= (state
== -1) ? BREAKON
: BREAKOFF
;
2410 stli_cmdwait(brdp
, portp
, A_BREAK
, &arg
, sizeof(long), 0);
2414 current->timeout = savetime;
2415 current->state = savestate;
2419 /*****************************************************************************/
2421 static void stli_waituntilsent(struct tty_struct
*tty
, int timeout
)
2427 printk(KERN_DEBUG
"stli_waituntilsent(tty=%x,timeout=%x)\n", (int) tty
, timeout
);
2430 if (tty
== (struct tty_struct
*) NULL
)
2432 portp
= tty
->driver_data
;
2433 if (portp
== (stliport_t
*) NULL
)
2438 tend
= jiffies
+ timeout
;
2440 while (test_bit(ST_TXBUSY
, &portp
->state
)) {
2441 if (signal_pending(current
))
2443 msleep_interruptible(20);
2444 if (time_after_eq(jiffies
, tend
))
2449 /*****************************************************************************/
2451 static void stli_sendxchar(struct tty_struct
*tty
, char ch
)
2458 printk(KERN_DEBUG
"stli_sendxchar(tty=%x,ch=%x)\n", (int) tty
, ch
);
2461 if (tty
== (struct tty_struct
*) NULL
)
2463 portp
= tty
->driver_data
;
2464 if (portp
== (stliport_t
*) NULL
)
2466 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
2468 brdp
= stli_brds
[portp
->brdnr
];
2469 if (brdp
== (stlibrd_t
*) NULL
)
2472 memset(&actrl
, 0, sizeof(asyctrl_t
));
2473 if (ch
== STOP_CHAR(tty
)) {
2474 actrl
.rxctrl
= CT_STOPFLOW
;
2475 } else if (ch
== START_CHAR(tty
)) {
2476 actrl
.rxctrl
= CT_STARTFLOW
;
2478 actrl
.txctrl
= CT_SENDCHR
;
2482 stli_cmdwait(brdp
, portp
, A_PORTCTRL
, &actrl
, sizeof(asyctrl_t
), 0);
2485 /*****************************************************************************/
2490 * Format info for a specified port. The line is deliberately limited
2491 * to 80 characters. (If it is too long it will be truncated, if too
2492 * short then padded with spaces).
2495 static int stli_portinfo(stlibrd_t
*brdp
, stliport_t
*portp
, int portnr
, char *pos
)
2500 rc
= stli_portcmdstats(portp
);
2503 if (brdp
->state
& BST_STARTED
) {
2504 switch (stli_comstats
.hwid
) {
2505 case 0: uart
= "2681"; break;
2506 case 1: uart
= "SC26198"; break;
2507 default: uart
= "CD1400"; break;
2512 sp
+= sprintf(sp
, "%d: uart:%s ", portnr
, uart
);
2514 if ((brdp
->state
& BST_STARTED
) && (rc
>= 0)) {
2515 sp
+= sprintf(sp
, "tx:%d rx:%d", (int) stli_comstats
.txtotal
,
2516 (int) stli_comstats
.rxtotal
);
2518 if (stli_comstats
.rxframing
)
2519 sp
+= sprintf(sp
, " fe:%d",
2520 (int) stli_comstats
.rxframing
);
2521 if (stli_comstats
.rxparity
)
2522 sp
+= sprintf(sp
, " pe:%d",
2523 (int) stli_comstats
.rxparity
);
2524 if (stli_comstats
.rxbreaks
)
2525 sp
+= sprintf(sp
, " brk:%d",
2526 (int) stli_comstats
.rxbreaks
);
2527 if (stli_comstats
.rxoverrun
)
2528 sp
+= sprintf(sp
, " oe:%d",
2529 (int) stli_comstats
.rxoverrun
);
2531 cnt
= sprintf(sp
, "%s%s%s%s%s ",
2532 (stli_comstats
.signals
& TIOCM_RTS
) ? "|RTS" : "",
2533 (stli_comstats
.signals
& TIOCM_CTS
) ? "|CTS" : "",
2534 (stli_comstats
.signals
& TIOCM_DTR
) ? "|DTR" : "",
2535 (stli_comstats
.signals
& TIOCM_CD
) ? "|DCD" : "",
2536 (stli_comstats
.signals
& TIOCM_DSR
) ? "|DSR" : "");
2541 for (cnt
= (sp
- pos
); (cnt
< (MAXLINE
- 1)); cnt
++)
2544 pos
[(MAXLINE
- 2)] = '+';
2545 pos
[(MAXLINE
- 1)] = '\n';
2550 /*****************************************************************************/
2553 * Port info, read from the /proc file system.
2556 static int stli_readproc(char *page
, char **start
, off_t off
, int count
, int *eof
, void *data
)
2560 int brdnr
, portnr
, totalport
;
2565 printk(KERN_DEBUG
"stli_readproc(page=%x,start=%x,off=%x,count=%d,eof=%x,"
2566 "data=%x\n", (int) page
, (int) start
, (int) off
, count
,
2567 (int) eof
, (int) data
);
2575 pos
+= sprintf(pos
, "%s: version %s", stli_drvtitle
,
2577 while (pos
< (page
+ MAXLINE
- 1))
2584 * We scan through for each board, panel and port. The offset is
2585 * calculated on the fly, and irrelevant ports are skipped.
2587 for (brdnr
= 0; (brdnr
< stli_nrbrds
); brdnr
++) {
2588 brdp
= stli_brds
[brdnr
];
2589 if (brdp
== (stlibrd_t
*) NULL
)
2591 if (brdp
->state
== 0)
2594 maxoff
= curoff
+ (brdp
->nrports
* MAXLINE
);
2595 if (off
>= maxoff
) {
2600 totalport
= brdnr
* STL_MAXPORTS
;
2601 for (portnr
= 0; (portnr
< brdp
->nrports
); portnr
++,
2603 portp
= brdp
->ports
[portnr
];
2604 if (portp
== (stliport_t
*) NULL
)
2606 if (off
>= (curoff
+= MAXLINE
))
2608 if ((pos
- page
+ MAXLINE
) > count
)
2610 pos
+= stli_portinfo(brdp
, portp
, totalport
, pos
);
2621 /*****************************************************************************/
2624 * Generic send command routine. This will send a message to the slave,
2625 * of the specified type with the specified argument. Must be very
2626 * careful of data that will be copied out from shared memory -
2627 * containing command results. The command completion is all done from
2628 * a poll routine that does not have user context. Therefore you cannot
2629 * copy back directly into user space, or to the kernel stack of a
2630 * process. This routine does not sleep, so can be called from anywhere.
2633 static void stli_sendcmd(stlibrd_t
*brdp
, stliport_t
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
)
2635 volatile cdkhdr_t
*hdrp
;
2636 volatile cdkctrl_t
*cp
;
2637 volatile unsigned char *bits
;
2638 unsigned long flags
;
2641 printk(KERN_DEBUG
"stli_sendcmd(brdp=%x,portp=%x,cmd=%x,arg=%x,size=%d,"
2642 "copyback=%d)\n", (int) brdp
, (int) portp
, (int) cmd
,
2643 (int) arg
, size
, copyback
);
2649 if (test_bit(ST_CMDING
, &portp
->state
)) {
2650 printk(KERN_ERR
"STALLION: command already busy, cmd=%x!\n",
2652 restore_flags(flags
);
2657 cp
= &((volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->ctrl
;
2659 memcpy((void *) &(cp
->args
[0]), arg
, size
);
2662 portp
->argsize
= size
;
2667 hdrp
= (volatile cdkhdr_t
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
2668 bits
= ((volatile unsigned char *) hdrp
) + brdp
->slaveoffset
+
2670 *bits
|= portp
->portbit
;
2671 set_bit(ST_CMDING
, &portp
->state
);
2673 restore_flags(flags
);
2676 /*****************************************************************************/
2679 * Read data from shared memory. This assumes that the shared memory
2680 * is enabled and that interrupts are off. Basically we just empty out
2681 * the shared memory buffer into the tty buffer. Must be careful to
2682 * handle the case where we fill up the tty buffer, but still have
2683 * more chars to unload.
2686 static void stli_read(stlibrd_t
*brdp
, stliport_t
*portp
)
2688 volatile cdkasyrq_t
*rp
;
2689 volatile char *shbuf
;
2690 struct tty_struct
*tty
;
2691 unsigned int head
, tail
, size
;
2692 unsigned int len
, stlen
;
2695 printk(KERN_DEBUG
"stli_read(brdp=%x,portp=%d)\n",
2696 (int) brdp
, (int) portp
);
2699 if (test_bit(ST_RXSTOP
, &portp
->state
))
2702 if (tty
== (struct tty_struct
*) NULL
)
2705 rp
= &((volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->rxq
;
2706 head
= (unsigned int) rp
->head
;
2707 if (head
!= ((unsigned int) rp
->head
))
2708 head
= (unsigned int) rp
->head
;
2709 tail
= (unsigned int) rp
->tail
;
2710 size
= portp
->rxsize
;
2715 len
= size
- (tail
- head
);
2716 stlen
= size
- tail
;
2719 len
= MIN(len
, (TTY_FLIPBUF_SIZE
- tty
->flip
.count
));
2720 shbuf
= (volatile char *) EBRDGETMEMPTR(brdp
, portp
->rxoffset
);
2723 stlen
= MIN(len
, stlen
);
2724 memcpy(tty
->flip
.char_buf_ptr
, (char *) (shbuf
+ tail
), stlen
);
2725 memset(tty
->flip
.flag_buf_ptr
, 0, stlen
);
2726 tty
->flip
.char_buf_ptr
+= stlen
;
2727 tty
->flip
.flag_buf_ptr
+= stlen
;
2728 tty
->flip
.count
+= stlen
;
2737 rp
= &((volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->rxq
;
2741 set_bit(ST_RXING
, &portp
->state
);
2743 tty_schedule_flip(tty
);
2746 /*****************************************************************************/
2749 * Set up and carry out any delayed commands. There is only a small set
2750 * of slave commands that can be done "off-level". So it is not too
2751 * difficult to deal with them here.
2754 static void stli_dodelaycmd(stliport_t
*portp
, volatile cdkctrl_t
*cp
)
2758 if (test_bit(ST_DOSIGS
, &portp
->state
)) {
2759 if (test_bit(ST_DOFLUSHTX
, &portp
->state
) &&
2760 test_bit(ST_DOFLUSHRX
, &portp
->state
))
2761 cmd
= A_SETSIGNALSF
;
2762 else if (test_bit(ST_DOFLUSHTX
, &portp
->state
))
2763 cmd
= A_SETSIGNALSFTX
;
2764 else if (test_bit(ST_DOFLUSHRX
, &portp
->state
))
2765 cmd
= A_SETSIGNALSFRX
;
2768 clear_bit(ST_DOFLUSHTX
, &portp
->state
);
2769 clear_bit(ST_DOFLUSHRX
, &portp
->state
);
2770 clear_bit(ST_DOSIGS
, &portp
->state
);
2771 memcpy((void *) &(cp
->args
[0]), (void *) &portp
->asig
,
2775 set_bit(ST_CMDING
, &portp
->state
);
2776 } else if (test_bit(ST_DOFLUSHTX
, &portp
->state
) ||
2777 test_bit(ST_DOFLUSHRX
, &portp
->state
)) {
2778 cmd
= ((test_bit(ST_DOFLUSHTX
, &portp
->state
)) ? FLUSHTX
: 0);
2779 cmd
|= ((test_bit(ST_DOFLUSHRX
, &portp
->state
)) ? FLUSHRX
: 0);
2780 clear_bit(ST_DOFLUSHTX
, &portp
->state
);
2781 clear_bit(ST_DOFLUSHRX
, &portp
->state
);
2782 memcpy((void *) &(cp
->args
[0]), (void *) &cmd
, sizeof(int));
2785 set_bit(ST_CMDING
, &portp
->state
);
2789 /*****************************************************************************/
2792 * Host command service checking. This handles commands or messages
2793 * coming from the slave to the host. Must have board shared memory
2794 * enabled and interrupts off when called. Notice that by servicing the
2795 * read data last we don't need to change the shared memory pointer
2796 * during processing (which is a slow IO operation).
2797 * Return value indicates if this port is still awaiting actions from
2798 * the slave (like open, command, or even TX data being sent). If 0
2799 * then port is still busy, otherwise no longer busy.
2802 static int stli_hostcmd(stlibrd_t
*brdp
, stliport_t
*portp
)
2804 volatile cdkasy_t
*ap
;
2805 volatile cdkctrl_t
*cp
;
2806 struct tty_struct
*tty
;
2808 unsigned long oldsigs
;
2812 printk(KERN_DEBUG
"stli_hostcmd(brdp=%x,channr=%d)\n",
2813 (int) brdp
, channr
);
2816 ap
= (volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
2820 * Check if we are waiting for an open completion message.
2822 if (test_bit(ST_OPENING
, &portp
->state
)) {
2823 rc
= (int) cp
->openarg
;
2824 if ((cp
->open
== 0) && (rc
!= 0)) {
2829 clear_bit(ST_OPENING
, &portp
->state
);
2830 wake_up_interruptible(&portp
->raw_wait
);
2835 * Check if we are waiting for a close completion message.
2837 if (test_bit(ST_CLOSING
, &portp
->state
)) {
2838 rc
= (int) cp
->closearg
;
2839 if ((cp
->close
== 0) && (rc
!= 0)) {
2844 clear_bit(ST_CLOSING
, &portp
->state
);
2845 wake_up_interruptible(&portp
->raw_wait
);
2850 * Check if we are waiting for a command completion message. We may
2851 * need to copy out the command results associated with this command.
2853 if (test_bit(ST_CMDING
, &portp
->state
)) {
2855 if ((cp
->cmd
== 0) && (rc
!= 0)) {
2858 if (portp
->argp
!= (void *) NULL
) {
2859 memcpy(portp
->argp
, (void *) &(cp
->args
[0]),
2861 portp
->argp
= (void *) NULL
;
2865 clear_bit(ST_CMDING
, &portp
->state
);
2866 stli_dodelaycmd(portp
, cp
);
2867 wake_up_interruptible(&portp
->raw_wait
);
2872 * Check for any notification messages ready. This includes lots of
2873 * different types of events - RX chars ready, RX break received,
2874 * TX data low or empty in the slave, modem signals changed state.
2883 if (nt
.signal
& SG_DCD
) {
2884 oldsigs
= portp
->sigs
;
2885 portp
->sigs
= stli_mktiocm(nt
.sigvalue
);
2886 clear_bit(ST_GETSIGS
, &portp
->state
);
2887 if ((portp
->sigs
& TIOCM_CD
) &&
2888 ((oldsigs
& TIOCM_CD
) == 0))
2889 wake_up_interruptible(&portp
->open_wait
);
2890 if ((oldsigs
& TIOCM_CD
) &&
2891 ((portp
->sigs
& TIOCM_CD
) == 0)) {
2892 if (portp
->flags
& ASYNC_CHECK_CD
) {
2894 schedule_work(&portp
->tqhangup
);
2899 if (nt
.data
& DT_TXEMPTY
)
2900 clear_bit(ST_TXBUSY
, &portp
->state
);
2901 if (nt
.data
& (DT_TXEMPTY
| DT_TXLOW
)) {
2902 if (tty
!= (struct tty_struct
*) NULL
) {
2903 if ((tty
->flags
& (1 << TTY_DO_WRITE_WAKEUP
)) &&
2904 tty
->ldisc
.write_wakeup
) {
2905 (tty
->ldisc
.write_wakeup
)(tty
);
2908 wake_up_interruptible(&tty
->write_wait
);
2912 if ((nt
.data
& DT_RXBREAK
) && (portp
->rxmarkmsk
& BRKINT
)) {
2913 if (tty
!= (struct tty_struct
*) NULL
) {
2914 if (tty
->flip
.count
< TTY_FLIPBUF_SIZE
) {
2916 *tty
->flip
.flag_buf_ptr
++ = TTY_BREAK
;
2917 *tty
->flip
.char_buf_ptr
++ = 0;
2918 if (portp
->flags
& ASYNC_SAK
) {
2922 tty_schedule_flip(tty
);
2927 if (nt
.data
& DT_RXBUSY
) {
2929 stli_read(brdp
, portp
);
2934 * It might seem odd that we are checking for more RX chars here.
2935 * But, we need to handle the case where the tty buffer was previously
2936 * filled, but we had more characters to pass up. The slave will not
2937 * send any more RX notify messages until the RX buffer has been emptied.
2938 * But it will leave the service bits on (since the buffer is not empty).
2939 * So from here we can try to process more RX chars.
2941 if ((!donerx
) && test_bit(ST_RXING
, &portp
->state
)) {
2942 clear_bit(ST_RXING
, &portp
->state
);
2943 stli_read(brdp
, portp
);
2946 return((test_bit(ST_OPENING
, &portp
->state
) ||
2947 test_bit(ST_CLOSING
, &portp
->state
) ||
2948 test_bit(ST_CMDING
, &portp
->state
) ||
2949 test_bit(ST_TXBUSY
, &portp
->state
) ||
2950 test_bit(ST_RXING
, &portp
->state
)) ? 0 : 1);
2953 /*****************************************************************************/
2956 * Service all ports on a particular board. Assumes that the boards
2957 * shared memory is enabled, and that the page pointer is pointed
2958 * at the cdk header structure.
2961 static void stli_brdpoll(stlibrd_t
*brdp
, volatile cdkhdr_t
*hdrp
)
2964 unsigned char hostbits
[(STL_MAXCHANS
/ 8) + 1];
2965 unsigned char slavebits
[(STL_MAXCHANS
/ 8) + 1];
2966 unsigned char *slavep
;
2967 int bitpos
, bitat
, bitsize
;
2968 int channr
, nrdevs
, slavebitchange
;
2970 bitsize
= brdp
->bitsize
;
2971 nrdevs
= brdp
->nrdevs
;
2974 * Check if slave wants any service. Basically we try to do as
2975 * little work as possible here. There are 2 levels of service
2976 * bits. So if there is nothing to do we bail early. We check
2977 * 8 service bits at a time in the inner loop, so we can bypass
2978 * the lot if none of them want service.
2980 memcpy(&hostbits
[0], (((unsigned char *) hdrp
) + brdp
->hostoffset
),
2983 memset(&slavebits
[0], 0, bitsize
);
2986 for (bitpos
= 0; (bitpos
< bitsize
); bitpos
++) {
2987 if (hostbits
[bitpos
] == 0)
2989 channr
= bitpos
* 8;
2990 for (bitat
= 0x1; (channr
< nrdevs
); channr
++, bitat
<<= 1) {
2991 if (hostbits
[bitpos
] & bitat
) {
2992 portp
= brdp
->ports
[(channr
- 1)];
2993 if (stli_hostcmd(brdp
, portp
)) {
2995 slavebits
[bitpos
] |= bitat
;
3002 * If any of the ports are no longer busy then update them in the
3003 * slave request bits. We need to do this after, since a host port
3004 * service may initiate more slave requests.
3006 if (slavebitchange
) {
3007 hdrp
= (volatile cdkhdr_t
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
3008 slavep
= ((unsigned char *) hdrp
) + brdp
->slaveoffset
;
3009 for (bitpos
= 0; (bitpos
< bitsize
); bitpos
++) {
3010 if (slavebits
[bitpos
])
3011 slavep
[bitpos
] &= ~slavebits
[bitpos
];
3016 /*****************************************************************************/
3019 * Driver poll routine. This routine polls the boards in use and passes
3020 * messages back up to host when necessary. This is actually very
3021 * CPU efficient, since we will always have the kernel poll clock, it
3022 * adds only a few cycles when idle (since board service can be
3023 * determined very easily), but when loaded generates no interrupts
3024 * (with their expensive associated context change).
3027 static void stli_poll(unsigned long arg
)
3029 volatile cdkhdr_t
*hdrp
;
3033 stli_timerlist
.expires
= STLI_TIMEOUT
;
3034 add_timer(&stli_timerlist
);
3037 * Check each board and do any servicing required.
3039 for (brdnr
= 0; (brdnr
< stli_nrbrds
); brdnr
++) {
3040 brdp
= stli_brds
[brdnr
];
3041 if (brdp
== (stlibrd_t
*) NULL
)
3043 if ((brdp
->state
& BST_STARTED
) == 0)
3047 hdrp
= (volatile cdkhdr_t
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
3049 stli_brdpoll(brdp
, hdrp
);
3054 /*****************************************************************************/
3057 * Translate the termios settings into the port setting structure of
3061 static void stli_mkasyport(stliport_t
*portp
, asyport_t
*pp
, struct termios
*tiosp
)
3064 printk(KERN_DEBUG
"stli_mkasyport(portp=%x,pp=%x,tiosp=%d)\n",
3065 (int) portp
, (int) pp
, (int) tiosp
);
3068 memset(pp
, 0, sizeof(asyport_t
));
3071 * Start of by setting the baud, char size, parity and stop bit info.
3073 pp
->baudout
= tiosp
->c_cflag
& CBAUD
;
3074 if (pp
->baudout
& CBAUDEX
) {
3075 pp
->baudout
&= ~CBAUDEX
;
3076 if ((pp
->baudout
< 1) || (pp
->baudout
> 4))
3077 tiosp
->c_cflag
&= ~CBAUDEX
;
3081 pp
->baudout
= stli_baudrates
[pp
->baudout
];
3082 if ((tiosp
->c_cflag
& CBAUD
) == B38400
) {
3083 if ((portp
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_HI
)
3084 pp
->baudout
= 57600;
3085 else if ((portp
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_VHI
)
3086 pp
->baudout
= 115200;
3087 else if ((portp
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_SHI
)
3088 pp
->baudout
= 230400;
3089 else if ((portp
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_WARP
)
3090 pp
->baudout
= 460800;
3091 else if ((portp
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_CUST
)
3092 pp
->baudout
= (portp
->baud_base
/ portp
->custom_divisor
);
3094 if (pp
->baudout
> STL_MAXBAUD
)
3095 pp
->baudout
= STL_MAXBAUD
;
3096 pp
->baudin
= pp
->baudout
;
3098 switch (tiosp
->c_cflag
& CSIZE
) {
3113 if (tiosp
->c_cflag
& CSTOPB
)
3114 pp
->stopbs
= PT_STOP2
;
3116 pp
->stopbs
= PT_STOP1
;
3118 if (tiosp
->c_cflag
& PARENB
) {
3119 if (tiosp
->c_cflag
& PARODD
)
3120 pp
->parity
= PT_ODDPARITY
;
3122 pp
->parity
= PT_EVENPARITY
;
3124 pp
->parity
= PT_NOPARITY
;
3128 * Set up any flow control options enabled.
3130 if (tiosp
->c_iflag
& IXON
) {
3132 if (tiosp
->c_iflag
& IXANY
)
3133 pp
->flow
|= F_IXANY
;
3135 if (tiosp
->c_cflag
& CRTSCTS
)
3136 pp
->flow
|= (F_RTSFLOW
| F_CTSFLOW
);
3138 pp
->startin
= tiosp
->c_cc
[VSTART
];
3139 pp
->stopin
= tiosp
->c_cc
[VSTOP
];
3140 pp
->startout
= tiosp
->c_cc
[VSTART
];
3141 pp
->stopout
= tiosp
->c_cc
[VSTOP
];
3144 * Set up the RX char marking mask with those RX error types we must
3145 * catch. We can get the slave to help us out a little here, it will
3146 * ignore parity errors and breaks for us, and mark parity errors in
3149 if (tiosp
->c_iflag
& IGNPAR
)
3150 pp
->iflag
|= FI_IGNRXERRS
;
3151 if (tiosp
->c_iflag
& IGNBRK
)
3152 pp
->iflag
|= FI_IGNBREAK
;
3154 portp
->rxmarkmsk
= 0;
3155 if (tiosp
->c_iflag
& (INPCK
| PARMRK
))
3156 pp
->iflag
|= FI_1MARKRXERRS
;
3157 if (tiosp
->c_iflag
& BRKINT
)
3158 portp
->rxmarkmsk
|= BRKINT
;
3161 * Set up clocal processing as required.
3163 if (tiosp
->c_cflag
& CLOCAL
)
3164 portp
->flags
&= ~ASYNC_CHECK_CD
;
3166 portp
->flags
|= ASYNC_CHECK_CD
;
3169 * Transfer any persistent flags into the asyport structure.
3171 pp
->pflag
= (portp
->pflag
& 0xffff);
3172 pp
->vmin
= (portp
->pflag
& P_RXIMIN
) ? 1 : 0;
3173 pp
->vtime
= (portp
->pflag
& P_RXITIME
) ? 1 : 0;
3174 pp
->cc
[1] = (portp
->pflag
& P_RXTHOLD
) ? 1 : 0;
3177 /*****************************************************************************/
3180 * Construct a slave signals structure for setting the DTR and RTS
3181 * signals as specified.
3184 static void stli_mkasysigs(asysigs_t
*sp
, int dtr
, int rts
)
3187 printk(KERN_DEBUG
"stli_mkasysigs(sp=%x,dtr=%d,rts=%d)\n",
3188 (int) sp
, dtr
, rts
);
3191 memset(sp
, 0, sizeof(asysigs_t
));
3193 sp
->signal
|= SG_DTR
;
3194 sp
->sigvalue
|= ((dtr
> 0) ? SG_DTR
: 0);
3197 sp
->signal
|= SG_RTS
;
3198 sp
->sigvalue
|= ((rts
> 0) ? SG_RTS
: 0);
3202 /*****************************************************************************/
3205 * Convert the signals returned from the slave into a local TIOCM type
3206 * signals value. We keep them locally in TIOCM format.
3209 static long stli_mktiocm(unsigned long sigvalue
)
3214 printk(KERN_DEBUG
"stli_mktiocm(sigvalue=%x)\n", (int) sigvalue
);
3218 tiocm
|= ((sigvalue
& SG_DCD
) ? TIOCM_CD
: 0);
3219 tiocm
|= ((sigvalue
& SG_CTS
) ? TIOCM_CTS
: 0);
3220 tiocm
|= ((sigvalue
& SG_RI
) ? TIOCM_RI
: 0);
3221 tiocm
|= ((sigvalue
& SG_DSR
) ? TIOCM_DSR
: 0);
3222 tiocm
|= ((sigvalue
& SG_DTR
) ? TIOCM_DTR
: 0);
3223 tiocm
|= ((sigvalue
& SG_RTS
) ? TIOCM_RTS
: 0);
3227 /*****************************************************************************/
3230 * All panels and ports actually attached have been worked out. All
3231 * we need to do here is set up the appropriate per port data structures.
3234 static int stli_initports(stlibrd_t
*brdp
)
3237 int i
, panelnr
, panelport
;
3240 printk(KERN_DEBUG
"stli_initports(brdp=%x)\n", (int) brdp
);
3243 for (i
= 0, panelnr
= 0, panelport
= 0; (i
< brdp
->nrports
); i
++) {
3244 portp
= (stliport_t
*) stli_memalloc(sizeof(stliport_t
));
3245 if (portp
== (stliport_t
*) NULL
) {
3246 printk("STALLION: failed to allocate port structure\n");
3250 memset(portp
, 0, sizeof(stliport_t
));
3251 portp
->magic
= STLI_PORTMAGIC
;
3253 portp
->brdnr
= brdp
->brdnr
;
3254 portp
->panelnr
= panelnr
;
3255 portp
->baud_base
= STL_BAUDBASE
;
3256 portp
->close_delay
= STL_CLOSEDELAY
;
3257 portp
->closing_wait
= 30 * HZ
;
3258 INIT_WORK(&portp
->tqhangup
, stli_dohangup
, portp
);
3259 init_waitqueue_head(&portp
->open_wait
);
3260 init_waitqueue_head(&portp
->close_wait
);
3261 init_waitqueue_head(&portp
->raw_wait
);
3263 if (panelport
>= brdp
->panels
[panelnr
]) {
3267 brdp
->ports
[i
] = portp
;
3273 /*****************************************************************************/
3276 * All the following routines are board specific hardware operations.
3279 static void stli_ecpinit(stlibrd_t
*brdp
)
3281 unsigned long memconf
;
3284 printk(KERN_DEBUG
"stli_ecpinit(brdp=%d)\n", (int) brdp
);
3287 outb(ECP_ATSTOP
, (brdp
->iobase
+ ECP_ATCONFR
));
3289 outb(ECP_ATDISABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
3292 memconf
= (brdp
->memaddr
& ECP_ATADDRMASK
) >> ECP_ATADDRSHFT
;
3293 outb(memconf
, (brdp
->iobase
+ ECP_ATMEMAR
));
3296 /*****************************************************************************/
3298 static void stli_ecpenable(stlibrd_t
*brdp
)
3301 printk(KERN_DEBUG
"stli_ecpenable(brdp=%x)\n", (int) brdp
);
3303 outb(ECP_ATENABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
3306 /*****************************************************************************/
3308 static void stli_ecpdisable(stlibrd_t
*brdp
)
3311 printk(KERN_DEBUG
"stli_ecpdisable(brdp=%x)\n", (int) brdp
);
3313 outb(ECP_ATDISABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
3316 /*****************************************************************************/
3318 static char *stli_ecpgetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
)
3324 printk(KERN_DEBUG
"stli_ecpgetmemptr(brdp=%x,offset=%x)\n", (int) brdp
,
3328 if (offset
> brdp
->memsize
) {
3329 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3330 "range at line=%d(%d), brd=%d\n",
3331 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3335 ptr
= brdp
->membase
+ (offset
% ECP_ATPAGESIZE
);
3336 val
= (unsigned char) (offset
/ ECP_ATPAGESIZE
);
3338 outb(val
, (brdp
->iobase
+ ECP_ATMEMPR
));
3342 /*****************************************************************************/
3344 static void stli_ecpreset(stlibrd_t
*brdp
)
3347 printk(KERN_DEBUG
"stli_ecpreset(brdp=%x)\n", (int) brdp
);
3350 outb(ECP_ATSTOP
, (brdp
->iobase
+ ECP_ATCONFR
));
3352 outb(ECP_ATDISABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
3356 /*****************************************************************************/
3358 static void stli_ecpintr(stlibrd_t
*brdp
)
3361 printk(KERN_DEBUG
"stli_ecpintr(brdp=%x)\n", (int) brdp
);
3363 outb(0x1, brdp
->iobase
);
3366 /*****************************************************************************/
3369 * The following set of functions act on ECP EISA boards.
3372 static void stli_ecpeiinit(stlibrd_t
*brdp
)
3374 unsigned long memconf
;
3377 printk(KERN_DEBUG
"stli_ecpeiinit(brdp=%x)\n", (int) brdp
);
3380 outb(0x1, (brdp
->iobase
+ ECP_EIBRDENAB
));
3381 outb(ECP_EISTOP
, (brdp
->iobase
+ ECP_EICONFR
));
3383 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
3386 memconf
= (brdp
->memaddr
& ECP_EIADDRMASKL
) >> ECP_EIADDRSHFTL
;
3387 outb(memconf
, (brdp
->iobase
+ ECP_EIMEMARL
));
3388 memconf
= (brdp
->memaddr
& ECP_EIADDRMASKH
) >> ECP_EIADDRSHFTH
;
3389 outb(memconf
, (brdp
->iobase
+ ECP_EIMEMARH
));
3392 /*****************************************************************************/
3394 static void stli_ecpeienable(stlibrd_t
*brdp
)
3396 outb(ECP_EIENABLE
, (brdp
->iobase
+ ECP_EICONFR
));
3399 /*****************************************************************************/
3401 static void stli_ecpeidisable(stlibrd_t
*brdp
)
3403 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
3406 /*****************************************************************************/
3408 static char *stli_ecpeigetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
)
3414 printk(KERN_DEBUG
"stli_ecpeigetmemptr(brdp=%x,offset=%x,line=%d)\n",
3415 (int) brdp
, (int) offset
, line
);
3418 if (offset
> brdp
->memsize
) {
3419 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3420 "range at line=%d(%d), brd=%d\n",
3421 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3425 ptr
= brdp
->membase
+ (offset
% ECP_EIPAGESIZE
);
3426 if (offset
< ECP_EIPAGESIZE
)
3429 val
= ECP_EIENABLE
| 0x40;
3431 outb(val
, (brdp
->iobase
+ ECP_EICONFR
));
3435 /*****************************************************************************/
3437 static void stli_ecpeireset(stlibrd_t
*brdp
)
3439 outb(ECP_EISTOP
, (brdp
->iobase
+ ECP_EICONFR
));
3441 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
3445 /*****************************************************************************/
3448 * The following set of functions act on ECP MCA boards.
3451 static void stli_ecpmcenable(stlibrd_t
*brdp
)
3453 outb(ECP_MCENABLE
, (brdp
->iobase
+ ECP_MCCONFR
));
3456 /*****************************************************************************/
3458 static void stli_ecpmcdisable(stlibrd_t
*brdp
)
3460 outb(ECP_MCDISABLE
, (brdp
->iobase
+ ECP_MCCONFR
));
3463 /*****************************************************************************/
3465 static char *stli_ecpmcgetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
)
3470 if (offset
> brdp
->memsize
) {
3471 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3472 "range at line=%d(%d), brd=%d\n",
3473 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3477 ptr
= brdp
->membase
+ (offset
% ECP_MCPAGESIZE
);
3478 val
= ((unsigned char) (offset
/ ECP_MCPAGESIZE
)) | ECP_MCENABLE
;
3480 outb(val
, (brdp
->iobase
+ ECP_MCCONFR
));
3484 /*****************************************************************************/
3486 static void stli_ecpmcreset(stlibrd_t
*brdp
)
3488 outb(ECP_MCSTOP
, (brdp
->iobase
+ ECP_MCCONFR
));
3490 outb(ECP_MCDISABLE
, (brdp
->iobase
+ ECP_MCCONFR
));
3494 /*****************************************************************************/
3497 * The following set of functions act on ECP PCI boards.
3500 static void stli_ecppciinit(stlibrd_t
*brdp
)
3503 printk(KERN_DEBUG
"stli_ecppciinit(brdp=%x)\n", (int) brdp
);
3506 outb(ECP_PCISTOP
, (brdp
->iobase
+ ECP_PCICONFR
));
3508 outb(0, (brdp
->iobase
+ ECP_PCICONFR
));
3512 /*****************************************************************************/
3514 static char *stli_ecppcigetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
)
3520 printk(KERN_DEBUG
"stli_ecppcigetmemptr(brdp=%x,offset=%x,line=%d)\n",
3521 (int) brdp
, (int) offset
, line
);
3524 if (offset
> brdp
->memsize
) {
3525 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3526 "range at line=%d(%d), board=%d\n",
3527 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3531 ptr
= brdp
->membase
+ (offset
% ECP_PCIPAGESIZE
);
3532 val
= (offset
/ ECP_PCIPAGESIZE
) << 1;
3534 outb(val
, (brdp
->iobase
+ ECP_PCICONFR
));
3538 /*****************************************************************************/
3540 static void stli_ecppcireset(stlibrd_t
*brdp
)
3542 outb(ECP_PCISTOP
, (brdp
->iobase
+ ECP_PCICONFR
));
3544 outb(0, (brdp
->iobase
+ ECP_PCICONFR
));
3548 /*****************************************************************************/
3551 * The following routines act on ONboards.
3554 static void stli_onbinit(stlibrd_t
*brdp
)
3556 unsigned long memconf
;
3559 printk(KERN_DEBUG
"stli_onbinit(brdp=%d)\n", (int) brdp
);
3562 outb(ONB_ATSTOP
, (brdp
->iobase
+ ONB_ATCONFR
));
3564 outb(ONB_ATDISABLE
, (brdp
->iobase
+ ONB_ATCONFR
));
3567 memconf
= (brdp
->memaddr
& ONB_ATADDRMASK
) >> ONB_ATADDRSHFT
;
3568 outb(memconf
, (brdp
->iobase
+ ONB_ATMEMAR
));
3569 outb(0x1, brdp
->iobase
);
3573 /*****************************************************************************/
3575 static void stli_onbenable(stlibrd_t
*brdp
)
3578 printk(KERN_DEBUG
"stli_onbenable(brdp=%x)\n", (int) brdp
);
3580 outb((brdp
->enabval
| ONB_ATENABLE
), (brdp
->iobase
+ ONB_ATCONFR
));
3583 /*****************************************************************************/
3585 static void stli_onbdisable(stlibrd_t
*brdp
)
3588 printk(KERN_DEBUG
"stli_onbdisable(brdp=%x)\n", (int) brdp
);
3590 outb((brdp
->enabval
| ONB_ATDISABLE
), (brdp
->iobase
+ ONB_ATCONFR
));
3593 /*****************************************************************************/
3595 static char *stli_onbgetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
)
3600 printk(KERN_DEBUG
"stli_onbgetmemptr(brdp=%x,offset=%x)\n", (int) brdp
,
3604 if (offset
> brdp
->memsize
) {
3605 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3606 "range at line=%d(%d), brd=%d\n",
3607 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3610 ptr
= brdp
->membase
+ (offset
% ONB_ATPAGESIZE
);
3615 /*****************************************************************************/
3617 static void stli_onbreset(stlibrd_t
*brdp
)
3621 printk(KERN_DEBUG
"stli_onbreset(brdp=%x)\n", (int) brdp
);
3624 outb(ONB_ATSTOP
, (brdp
->iobase
+ ONB_ATCONFR
));
3626 outb(ONB_ATDISABLE
, (brdp
->iobase
+ ONB_ATCONFR
));
3630 /*****************************************************************************/
3633 * The following routines act on ONboard EISA.
3636 static void stli_onbeinit(stlibrd_t
*brdp
)
3638 unsigned long memconf
;
3641 printk(KERN_DEBUG
"stli_onbeinit(brdp=%d)\n", (int) brdp
);
3644 outb(0x1, (brdp
->iobase
+ ONB_EIBRDENAB
));
3645 outb(ONB_EISTOP
, (brdp
->iobase
+ ONB_EICONFR
));
3647 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
3650 memconf
= (brdp
->memaddr
& ONB_EIADDRMASKL
) >> ONB_EIADDRSHFTL
;
3651 outb(memconf
, (brdp
->iobase
+ ONB_EIMEMARL
));
3652 memconf
= (brdp
->memaddr
& ONB_EIADDRMASKH
) >> ONB_EIADDRSHFTH
;
3653 outb(memconf
, (brdp
->iobase
+ ONB_EIMEMARH
));
3654 outb(0x1, brdp
->iobase
);
3658 /*****************************************************************************/
3660 static void stli_onbeenable(stlibrd_t
*brdp
)
3663 printk(KERN_DEBUG
"stli_onbeenable(brdp=%x)\n", (int) brdp
);
3665 outb(ONB_EIENABLE
, (brdp
->iobase
+ ONB_EICONFR
));
3668 /*****************************************************************************/
3670 static void stli_onbedisable(stlibrd_t
*brdp
)
3673 printk(KERN_DEBUG
"stli_onbedisable(brdp=%x)\n", (int) brdp
);
3675 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
3678 /*****************************************************************************/
3680 static char *stli_onbegetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
)
3686 printk(KERN_DEBUG
"stli_onbegetmemptr(brdp=%x,offset=%x,line=%d)\n",
3687 (int) brdp
, (int) offset
, line
);
3690 if (offset
> brdp
->memsize
) {
3691 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3692 "range at line=%d(%d), brd=%d\n",
3693 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3697 ptr
= brdp
->membase
+ (offset
% ONB_EIPAGESIZE
);
3698 if (offset
< ONB_EIPAGESIZE
)
3701 val
= ONB_EIENABLE
| 0x40;
3703 outb(val
, (brdp
->iobase
+ ONB_EICONFR
));
3707 /*****************************************************************************/
3709 static void stli_onbereset(stlibrd_t
*brdp
)
3713 printk(KERN_ERR
"stli_onbereset(brdp=%x)\n", (int) brdp
);
3716 outb(ONB_EISTOP
, (brdp
->iobase
+ ONB_EICONFR
));
3718 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
3722 /*****************************************************************************/
3725 * The following routines act on Brumby boards.
3728 static void stli_bbyinit(stlibrd_t
*brdp
)
3732 printk(KERN_ERR
"stli_bbyinit(brdp=%d)\n", (int) brdp
);
3735 outb(BBY_ATSTOP
, (brdp
->iobase
+ BBY_ATCONFR
));
3737 outb(0, (brdp
->iobase
+ BBY_ATCONFR
));
3739 outb(0x1, brdp
->iobase
);
3743 /*****************************************************************************/
3745 static char *stli_bbygetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
)
3751 printk(KERN_ERR
"stli_bbygetmemptr(brdp=%x,offset=%x)\n", (int) brdp
,
3755 if (offset
> brdp
->memsize
) {
3756 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3757 "range at line=%d(%d), brd=%d\n",
3758 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3762 ptr
= brdp
->membase
+ (offset
% BBY_PAGESIZE
);
3763 val
= (unsigned char) (offset
/ BBY_PAGESIZE
);
3765 outb(val
, (brdp
->iobase
+ BBY_ATCONFR
));
3769 /*****************************************************************************/
3771 static void stli_bbyreset(stlibrd_t
*brdp
)
3775 printk(KERN_DEBUG
"stli_bbyreset(brdp=%x)\n", (int) brdp
);
3778 outb(BBY_ATSTOP
, (brdp
->iobase
+ BBY_ATCONFR
));
3780 outb(0, (brdp
->iobase
+ BBY_ATCONFR
));
3784 /*****************************************************************************/
3787 * The following routines act on original old Stallion boards.
3790 static void stli_stalinit(stlibrd_t
*brdp
)
3794 printk(KERN_DEBUG
"stli_stalinit(brdp=%d)\n", (int) brdp
);
3797 outb(0x1, brdp
->iobase
);
3801 /*****************************************************************************/
3803 static char *stli_stalgetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
)
3808 printk(KERN_DEBUG
"stli_stalgetmemptr(brdp=%x,offset=%x)\n", (int) brdp
,
3812 if (offset
> brdp
->memsize
) {
3813 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3814 "range at line=%d(%d), brd=%d\n",
3815 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3818 ptr
= brdp
->membase
+ (offset
% STAL_PAGESIZE
);
3823 /*****************************************************************************/
3825 static void stli_stalreset(stlibrd_t
*brdp
)
3827 volatile unsigned long *vecp
;
3830 printk(KERN_DEBUG
"stli_stalreset(brdp=%x)\n", (int) brdp
);
3833 vecp
= (volatile unsigned long *) (brdp
->membase
+ 0x30);
3835 outb(0, brdp
->iobase
);
3839 /*****************************************************************************/
3842 * Try to find an ECP board and initialize it. This handles only ECP
3846 static int stli_initecp(stlibrd_t
*brdp
)
3850 unsigned int status
, nxtid
;
3852 int panelnr
, nrports
;
3855 printk(KERN_DEBUG
"stli_initecp(brdp=%x)\n", (int) brdp
);
3858 if (!request_region(brdp
->iobase
, brdp
->iosize
, "istallion"))
3861 if ((brdp
->iobase
== 0) || (brdp
->memaddr
== 0))
3863 release_region(brdp
->iobase
, brdp
->iosize
);
3867 brdp
->iosize
= ECP_IOSIZE
;
3870 * Based on the specific board type setup the common vars to access
3871 * and enable shared memory. Set all board specific information now
3874 switch (brdp
->brdtype
) {
3876 brdp
->membase
= (void *) brdp
->memaddr
;
3877 brdp
->memsize
= ECP_MEMSIZE
;
3878 brdp
->pagesize
= ECP_ATPAGESIZE
;
3879 brdp
->init
= stli_ecpinit
;
3880 brdp
->enable
= stli_ecpenable
;
3881 brdp
->reenable
= stli_ecpenable
;
3882 brdp
->disable
= stli_ecpdisable
;
3883 brdp
->getmemptr
= stli_ecpgetmemptr
;
3884 brdp
->intr
= stli_ecpintr
;
3885 brdp
->reset
= stli_ecpreset
;
3886 name
= "serial(EC8/64)";
3890 brdp
->membase
= (void *) brdp
->memaddr
;
3891 brdp
->memsize
= ECP_MEMSIZE
;
3892 brdp
->pagesize
= ECP_EIPAGESIZE
;
3893 brdp
->init
= stli_ecpeiinit
;
3894 brdp
->enable
= stli_ecpeienable
;
3895 brdp
->reenable
= stli_ecpeienable
;
3896 brdp
->disable
= stli_ecpeidisable
;
3897 brdp
->getmemptr
= stli_ecpeigetmemptr
;
3898 brdp
->intr
= stli_ecpintr
;
3899 brdp
->reset
= stli_ecpeireset
;
3900 name
= "serial(EC8/64-EI)";
3904 brdp
->membase
= (void *) brdp
->memaddr
;
3905 brdp
->memsize
= ECP_MEMSIZE
;
3906 brdp
->pagesize
= ECP_MCPAGESIZE
;
3908 brdp
->enable
= stli_ecpmcenable
;
3909 brdp
->reenable
= stli_ecpmcenable
;
3910 brdp
->disable
= stli_ecpmcdisable
;
3911 brdp
->getmemptr
= stli_ecpmcgetmemptr
;
3912 brdp
->intr
= stli_ecpintr
;
3913 brdp
->reset
= stli_ecpmcreset
;
3914 name
= "serial(EC8/64-MCA)";
3918 brdp
->membase
= (void *) brdp
->memaddr
;
3919 brdp
->memsize
= ECP_PCIMEMSIZE
;
3920 brdp
->pagesize
= ECP_PCIPAGESIZE
;
3921 brdp
->init
= stli_ecppciinit
;
3922 brdp
->enable
= NULL
;
3923 brdp
->reenable
= NULL
;
3924 brdp
->disable
= NULL
;
3925 brdp
->getmemptr
= stli_ecppcigetmemptr
;
3926 brdp
->intr
= stli_ecpintr
;
3927 brdp
->reset
= stli_ecppcireset
;
3928 name
= "serial(EC/RA-PCI)";
3932 release_region(brdp
->iobase
, brdp
->iosize
);
3937 * The per-board operations structure is all set up, so now let's go
3938 * and get the board operational. Firstly initialize board configuration
3939 * registers. Set the memory mapping info so we can get at the boards
3944 brdp
->membase
= ioremap(brdp
->memaddr
, brdp
->memsize
);
3945 if (brdp
->membase
== (void *) NULL
)
3947 release_region(brdp
->iobase
, brdp
->iosize
);
3952 * Now that all specific code is set up, enable the shared memory and
3953 * look for the a signature area that will tell us exactly what board
3954 * this is, and what it is connected to it.
3957 sigsp
= (cdkecpsig_t
*) EBRDGETMEMPTR(brdp
, CDK_SIGADDR
);
3958 memcpy(&sig
, sigsp
, sizeof(cdkecpsig_t
));
3962 printk("%s(%d): sig-> magic=%x rom=%x panel=%x,%x,%x,%x,%x,%x,%x,%x\n",
3963 __FILE__
, __LINE__
, (int) sig
.magic
, sig
.romver
, sig
.panelid
[0],
3964 (int) sig
.panelid
[1], (int) sig
.panelid
[2],
3965 (int) sig
.panelid
[3], (int) sig
.panelid
[4],
3966 (int) sig
.panelid
[5], (int) sig
.panelid
[6],
3967 (int) sig
.panelid
[7]);
3970 if (sig
.magic
!= ECP_MAGIC
)
3972 release_region(brdp
->iobase
, brdp
->iosize
);
3977 * Scan through the signature looking at the panels connected to the
3978 * board. Calculate the total number of ports as we go.
3980 for (panelnr
= 0, nxtid
= 0; (panelnr
< STL_MAXPANELS
); panelnr
++) {
3981 status
= sig
.panelid
[nxtid
];
3982 if ((status
& ECH_PNLIDMASK
) != nxtid
)
3985 brdp
->panelids
[panelnr
] = status
;
3986 nrports
= (status
& ECH_PNL16PORT
) ? 16 : 8;
3987 if ((nrports
== 16) && ((status
& ECH_PNLXPID
) == 0))
3989 brdp
->panels
[panelnr
] = nrports
;
3990 brdp
->nrports
+= nrports
;
3996 brdp
->state
|= BST_FOUND
;
4000 /*****************************************************************************/
4003 * Try to find an ONboard, Brumby or Stallion board and initialize it.
4004 * This handles only these board types.
4007 static int stli_initonb(stlibrd_t
*brdp
)
4015 printk(KERN_DEBUG
"stli_initonb(brdp=%x)\n", (int) brdp
);
4019 * Do a basic sanity check on the IO and memory addresses.
4021 if ((brdp
->iobase
== 0) || (brdp
->memaddr
== 0))
4024 brdp
->iosize
= ONB_IOSIZE
;
4026 if (!request_region(brdp
->iobase
, brdp
->iosize
, "istallion"))
4030 * Based on the specific board type setup the common vars to access
4031 * and enable shared memory. Set all board specific information now
4034 switch (brdp
->brdtype
) {
4038 case BRD_ONBOARD2_32
:
4040 brdp
->membase
= (void *) brdp
->memaddr
;
4041 brdp
->memsize
= ONB_MEMSIZE
;
4042 brdp
->pagesize
= ONB_ATPAGESIZE
;
4043 brdp
->init
= stli_onbinit
;
4044 brdp
->enable
= stli_onbenable
;
4045 brdp
->reenable
= stli_onbenable
;
4046 brdp
->disable
= stli_onbdisable
;
4047 brdp
->getmemptr
= stli_onbgetmemptr
;
4048 brdp
->intr
= stli_ecpintr
;
4049 brdp
->reset
= stli_onbreset
;
4050 if (brdp
->memaddr
> 0x100000)
4051 brdp
->enabval
= ONB_MEMENABHI
;
4053 brdp
->enabval
= ONB_MEMENABLO
;
4054 name
= "serial(ONBoard)";
4058 brdp
->membase
= (void *) brdp
->memaddr
;
4059 brdp
->memsize
= ONB_EIMEMSIZE
;
4060 brdp
->pagesize
= ONB_EIPAGESIZE
;
4061 brdp
->init
= stli_onbeinit
;
4062 brdp
->enable
= stli_onbeenable
;
4063 brdp
->reenable
= stli_onbeenable
;
4064 brdp
->disable
= stli_onbedisable
;
4065 brdp
->getmemptr
= stli_onbegetmemptr
;
4066 brdp
->intr
= stli_ecpintr
;
4067 brdp
->reset
= stli_onbereset
;
4068 name
= "serial(ONBoard/E)";
4074 brdp
->membase
= (void *) brdp
->memaddr
;
4075 brdp
->memsize
= BBY_MEMSIZE
;
4076 brdp
->pagesize
= BBY_PAGESIZE
;
4077 brdp
->init
= stli_bbyinit
;
4078 brdp
->enable
= NULL
;
4079 brdp
->reenable
= NULL
;
4080 brdp
->disable
= NULL
;
4081 brdp
->getmemptr
= stli_bbygetmemptr
;
4082 brdp
->intr
= stli_ecpintr
;
4083 brdp
->reset
= stli_bbyreset
;
4084 name
= "serial(Brumby)";
4088 brdp
->membase
= (void *) brdp
->memaddr
;
4089 brdp
->memsize
= STAL_MEMSIZE
;
4090 brdp
->pagesize
= STAL_PAGESIZE
;
4091 brdp
->init
= stli_stalinit
;
4092 brdp
->enable
= NULL
;
4093 brdp
->reenable
= NULL
;
4094 brdp
->disable
= NULL
;
4095 brdp
->getmemptr
= stli_stalgetmemptr
;
4096 brdp
->intr
= stli_ecpintr
;
4097 brdp
->reset
= stli_stalreset
;
4098 name
= "serial(Stallion)";
4102 release_region(brdp
->iobase
, brdp
->iosize
);
4107 * The per-board operations structure is all set up, so now let's go
4108 * and get the board operational. Firstly initialize board configuration
4109 * registers. Set the memory mapping info so we can get at the boards
4114 brdp
->membase
= ioremap(brdp
->memaddr
, brdp
->memsize
);
4115 if (brdp
->membase
== (void *) NULL
)
4117 release_region(brdp
->iobase
, brdp
->iosize
);
4122 * Now that all specific code is set up, enable the shared memory and
4123 * look for the a signature area that will tell us exactly what board
4124 * this is, and how many ports.
4127 sigsp
= (cdkonbsig_t
*) EBRDGETMEMPTR(brdp
, CDK_SIGADDR
);
4128 memcpy(&sig
, sigsp
, sizeof(cdkonbsig_t
));
4132 printk("%s(%d): sig-> magic=%x:%x:%x:%x romver=%x amask=%x:%x:%x\n",
4133 __FILE__
, __LINE__
, sig
.magic0
, sig
.magic1
, sig
.magic2
,
4134 sig
.magic3
, sig
.romver
, sig
.amask0
, sig
.amask1
, sig
.amask2
);
4137 if ((sig
.magic0
!= ONB_MAGIC0
) || (sig
.magic1
!= ONB_MAGIC1
) ||
4138 (sig
.magic2
!= ONB_MAGIC2
) || (sig
.magic3
!= ONB_MAGIC3
))
4140 release_region(brdp
->iobase
, brdp
->iosize
);
4145 * Scan through the signature alive mask and calculate how many ports
4146 * there are on this board.
4152 for (i
= 0; (i
< 16); i
++) {
4153 if (((sig
.amask0
<< i
) & 0x8000) == 0)
4158 brdp
->panels
[0] = brdp
->nrports
;
4161 brdp
->state
|= BST_FOUND
;
4165 /*****************************************************************************/
4168 * Start up a running board. This routine is only called after the
4169 * code has been down loaded to the board and is operational. It will
4170 * read in the memory map, and get the show on the road...
4173 static int stli_startbrd(stlibrd_t
*brdp
)
4175 volatile cdkhdr_t
*hdrp
;
4176 volatile cdkmem_t
*memp
;
4177 volatile cdkasy_t
*ap
;
4178 unsigned long flags
;
4180 int portnr
, nrdevs
, i
, rc
;
4183 printk(KERN_DEBUG
"stli_startbrd(brdp=%x)\n", (int) brdp
);
4191 hdrp
= (volatile cdkhdr_t
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
4192 nrdevs
= hdrp
->nrdevs
;
4195 printk("%s(%d): CDK version %d.%d.%d --> "
4196 "nrdevs=%d memp=%x hostp=%x slavep=%x\n",
4197 __FILE__
, __LINE__
, hdrp
->ver_release
, hdrp
->ver_modification
,
4198 hdrp
->ver_fix
, nrdevs
, (int) hdrp
->memp
, (int) hdrp
->hostp
,
4199 (int) hdrp
->slavep
);
4202 if (nrdevs
< (brdp
->nrports
+ 1)) {
4203 printk(KERN_ERR
"STALLION: slave failed to allocate memory for "
4204 "all devices, devices=%d\n", nrdevs
);
4205 brdp
->nrports
= nrdevs
- 1;
4207 brdp
->nrdevs
= nrdevs
;
4208 brdp
->hostoffset
= hdrp
->hostp
- CDK_CDKADDR
;
4209 brdp
->slaveoffset
= hdrp
->slavep
- CDK_CDKADDR
;
4210 brdp
->bitsize
= (nrdevs
+ 7) / 8;
4211 memp
= (volatile cdkmem_t
*) hdrp
->memp
;
4212 if (((unsigned long) memp
) > brdp
->memsize
) {
4213 printk(KERN_ERR
"STALLION: corrupted shared memory region?\n");
4215 goto stli_donestartup
;
4217 memp
= (volatile cdkmem_t
*) EBRDGETMEMPTR(brdp
, (unsigned long) memp
);
4218 if (memp
->dtype
!= TYP_ASYNCTRL
) {
4219 printk(KERN_ERR
"STALLION: no slave control device found\n");
4220 goto stli_donestartup
;
4225 * Cycle through memory allocation of each port. We are guaranteed to
4226 * have all ports inside the first page of slave window, so no need to
4227 * change pages while reading memory map.
4229 for (i
= 1, portnr
= 0; (i
< nrdevs
); i
++, portnr
++, memp
++) {
4230 if (memp
->dtype
!= TYP_ASYNC
)
4232 portp
= brdp
->ports
[portnr
];
4233 if (portp
== (stliport_t
*) NULL
)
4236 portp
->addr
= memp
->offset
;
4237 portp
->reqbit
= (unsigned char) (0x1 << (i
* 8 / nrdevs
));
4238 portp
->portidx
= (unsigned char) (i
/ 8);
4239 portp
->portbit
= (unsigned char) (0x1 << (i
% 8));
4242 hdrp
->slavereq
= 0xff;
4245 * For each port setup a local copy of the RX and TX buffer offsets
4246 * and sizes. We do this separate from the above, because we need to
4247 * move the shared memory page...
4249 for (i
= 1, portnr
= 0; (i
< nrdevs
); i
++, portnr
++) {
4250 portp
= brdp
->ports
[portnr
];
4251 if (portp
== (stliport_t
*) NULL
)
4253 if (portp
->addr
== 0)
4255 ap
= (volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
4256 if (ap
!= (volatile cdkasy_t
*) NULL
) {
4257 portp
->rxsize
= ap
->rxq
.size
;
4258 portp
->txsize
= ap
->txq
.size
;
4259 portp
->rxoffset
= ap
->rxq
.offset
;
4260 portp
->txoffset
= ap
->txq
.offset
;
4266 restore_flags(flags
);
4269 brdp
->state
|= BST_STARTED
;
4271 if (! stli_timeron
) {
4273 stli_timerlist
.expires
= STLI_TIMEOUT
;
4274 add_timer(&stli_timerlist
);
4280 /*****************************************************************************/
4283 * Probe and initialize the specified board.
4286 static int __init
stli_brdinit(stlibrd_t
*brdp
)
4289 printk(KERN_DEBUG
"stli_brdinit(brdp=%x)\n", (int) brdp
);
4292 stli_brds
[brdp
->brdnr
] = brdp
;
4294 switch (brdp
->brdtype
) {
4305 case BRD_ONBOARD2_32
:
4317 printk(KERN_ERR
"STALLION: %s board type not supported in "
4318 "this driver\n", stli_brdnames
[brdp
->brdtype
]);
4321 printk(KERN_ERR
"STALLION: board=%d is unknown board "
4322 "type=%d\n", brdp
->brdnr
, brdp
->brdtype
);
4326 if ((brdp
->state
& BST_FOUND
) == 0) {
4327 printk(KERN_ERR
"STALLION: %s board not found, board=%d "
4329 stli_brdnames
[brdp
->brdtype
], brdp
->brdnr
,
4330 brdp
->iobase
, (int) brdp
->memaddr
);
4334 stli_initports(brdp
);
4335 printk(KERN_INFO
"STALLION: %s found, board=%d io=%x mem=%x "
4336 "nrpanels=%d nrports=%d\n", stli_brdnames
[brdp
->brdtype
],
4337 brdp
->brdnr
, brdp
->iobase
, (int) brdp
->memaddr
,
4338 brdp
->nrpanels
, brdp
->nrports
);
4342 /*****************************************************************************/
4345 * Probe around trying to find where the EISA boards shared memory
4346 * might be. This is a bit if hack, but it is the best we can do.
4349 static int stli_eisamemprobe(stlibrd_t
*brdp
)
4351 cdkecpsig_t ecpsig
, *ecpsigp
;
4352 cdkonbsig_t onbsig
, *onbsigp
;
4356 printk(KERN_DEBUG
"stli_eisamemprobe(brdp=%x)\n", (int) brdp
);
4360 * First up we reset the board, to get it into a known state. There
4361 * is only 2 board types here we need to worry about. Don;t use the
4362 * standard board init routine here, it programs up the shared
4363 * memory address, and we don't know it yet...
4365 if (brdp
->brdtype
== BRD_ECPE
) {
4366 outb(0x1, (brdp
->iobase
+ ECP_EIBRDENAB
));
4367 outb(ECP_EISTOP
, (brdp
->iobase
+ ECP_EICONFR
));
4369 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
4371 stli_ecpeienable(brdp
);
4372 } else if (brdp
->brdtype
== BRD_ONBOARDE
) {
4373 outb(0x1, (brdp
->iobase
+ ONB_EIBRDENAB
));
4374 outb(ONB_EISTOP
, (brdp
->iobase
+ ONB_EICONFR
));
4376 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
4378 outb(0x1, brdp
->iobase
);
4380 stli_onbeenable(brdp
);
4386 brdp
->memsize
= ECP_MEMSIZE
;
4389 * Board shared memory is enabled, so now we have a poke around and
4390 * see if we can find it.
4392 for (i
= 0; (i
< stli_eisamempsize
); i
++) {
4393 brdp
->memaddr
= stli_eisamemprobeaddrs
[i
];
4394 brdp
->membase
= (void *) brdp
->memaddr
;
4395 brdp
->membase
= ioremap(brdp
->memaddr
, brdp
->memsize
);
4396 if (brdp
->membase
== (void *) NULL
)
4399 if (brdp
->brdtype
== BRD_ECPE
) {
4400 ecpsigp
= (cdkecpsig_t
*) stli_ecpeigetmemptr(brdp
,
4401 CDK_SIGADDR
, __LINE__
);
4402 memcpy(&ecpsig
, ecpsigp
, sizeof(cdkecpsig_t
));
4403 if (ecpsig
.magic
== ECP_MAGIC
)
4406 onbsigp
= (cdkonbsig_t
*) stli_onbegetmemptr(brdp
,
4407 CDK_SIGADDR
, __LINE__
);
4408 memcpy(&onbsig
, onbsigp
, sizeof(cdkonbsig_t
));
4409 if ((onbsig
.magic0
== ONB_MAGIC0
) &&
4410 (onbsig
.magic1
== ONB_MAGIC1
) &&
4411 (onbsig
.magic2
== ONB_MAGIC2
) &&
4412 (onbsig
.magic3
== ONB_MAGIC3
))
4416 iounmap(brdp
->membase
);
4422 * Regardless of whether we found the shared memory or not we must
4423 * disable the region. After that return success or failure.
4425 if (brdp
->brdtype
== BRD_ECPE
)
4426 stli_ecpeidisable(brdp
);
4428 stli_onbedisable(brdp
);
4432 brdp
->membase
= NULL
;
4433 printk(KERN_ERR
"STALLION: failed to probe shared memory "
4434 "region for %s in EISA slot=%d\n",
4435 stli_brdnames
[brdp
->brdtype
], (brdp
->iobase
>> 12));
4441 static int stli_getbrdnr(void)
4445 for (i
= 0; i
< STL_MAXBRDS
; i
++) {
4446 if (!stli_brds
[i
]) {
4447 if (i
>= stli_nrbrds
)
4448 stli_nrbrds
= i
+ 1;
4455 /*****************************************************************************/
4458 * Probe around and try to find any EISA boards in system. The biggest
4459 * problem here is finding out what memory address is associated with
4460 * an EISA board after it is found. The registers of the ECPE and
4461 * ONboardE are not readable - so we can't read them from there. We
4462 * don't have access to the EISA CMOS (or EISA BIOS) so we don't
4463 * actually have any way to find out the real value. The best we can
4464 * do is go probing around in the usual places hoping we can find it.
4467 static int stli_findeisabrds(void)
4470 unsigned int iobase
, eid
;
4474 printk(KERN_DEBUG
"stli_findeisabrds()\n");
4478 * Firstly check if this is an EISA system. Do this by probing for
4479 * the system board EISA ID. If this is not an EISA system then
4480 * don't bother going any further!
4483 if (inb(0xc80) == 0xff)
4487 * Looks like an EISA system, so go searching for EISA boards.
4489 for (iobase
= 0x1000; (iobase
<= 0xc000); iobase
+= 0x1000) {
4490 outb(0xff, (iobase
+ 0xc80));
4491 eid
= inb(iobase
+ 0xc80);
4492 eid
|= inb(iobase
+ 0xc81) << 8;
4493 if (eid
!= STL_EISAID
)
4497 * We have found a board. Need to check if this board was
4498 * statically configured already (just in case!).
4500 for (i
= 0; (i
< STL_MAXBRDS
); i
++) {
4501 brdp
= stli_brds
[i
];
4502 if (brdp
== (stlibrd_t
*) NULL
)
4504 if (brdp
->iobase
== iobase
)
4507 if (i
< STL_MAXBRDS
)
4511 * We have found a Stallion board and it is not configured already.
4512 * Allocate a board structure and initialize it.
4514 if ((brdp
= stli_allocbrd()) == (stlibrd_t
*) NULL
)
4516 if ((brdp
->brdnr
= stli_getbrdnr()) < 0)
4518 eid
= inb(iobase
+ 0xc82);
4519 if (eid
== ECP_EISAID
)
4520 brdp
->brdtype
= BRD_ECPE
;
4521 else if (eid
== ONB_EISAID
)
4522 brdp
->brdtype
= BRD_ONBOARDE
;
4524 brdp
->brdtype
= BRD_UNKNOWN
;
4525 brdp
->iobase
= iobase
;
4526 outb(0x1, (iobase
+ 0xc84));
4527 if (stli_eisamemprobe(brdp
))
4528 outb(0, (iobase
+ 0xc84));
4535 /*****************************************************************************/
4538 * Find the next available board number that is free.
4541 /*****************************************************************************/
4546 * We have a Stallion board. Allocate a board structure and
4547 * initialize it. Read its IO and MEMORY resources from PCI
4548 * configuration space.
4551 static int stli_initpcibrd(int brdtype
, struct pci_dev
*devp
)
4556 printk(KERN_DEBUG
"stli_initpcibrd(brdtype=%d,busnr=%x,devnr=%x)\n",
4557 brdtype
, dev
->bus
->number
, dev
->devfn
);
4560 if (pci_enable_device(devp
))
4562 if ((brdp
= stli_allocbrd()) == (stlibrd_t
*) NULL
)
4564 if ((brdp
->brdnr
= stli_getbrdnr()) < 0) {
4565 printk(KERN_INFO
"STALLION: too many boards found, "
4566 "maximum supported %d\n", STL_MAXBRDS
);
4569 brdp
->brdtype
= brdtype
;
4572 printk(KERN_DEBUG
"%s(%d): BAR[]=%lx,%lx,%lx,%lx\n", __FILE__
, __LINE__
,
4573 pci_resource_start(devp
, 0),
4574 pci_resource_start(devp
, 1),
4575 pci_resource_start(devp
, 2),
4576 pci_resource_start(devp
, 3));
4580 * We have all resources from the board, so lets setup the actual
4581 * board structure now.
4583 brdp
->iobase
= pci_resource_start(devp
, 3);
4584 brdp
->memaddr
= pci_resource_start(devp
, 2);
4590 /*****************************************************************************/
4593 * Find all Stallion PCI boards that might be installed. Initialize each
4594 * one as it is found.
4597 static int stli_findpcibrds(void)
4599 struct pci_dev
*dev
= NULL
;
4603 printk("stli_findpcibrds()\n");
4606 while ((dev
= pci_find_device(PCI_VENDOR_ID_STALLION
,
4607 PCI_DEVICE_ID_ECRA
, dev
))) {
4608 if ((rc
= stli_initpcibrd(BRD_ECPPCI
, dev
)))
4617 /*****************************************************************************/
4620 * Allocate a new board structure. Fill out the basic info in it.
4623 static stlibrd_t
*stli_allocbrd(void)
4627 brdp
= (stlibrd_t
*) stli_memalloc(sizeof(stlibrd_t
));
4628 if (brdp
== (stlibrd_t
*) NULL
) {
4629 printk(KERN_ERR
"STALLION: failed to allocate memory "
4630 "(size=%d)\n", sizeof(stlibrd_t
));
4631 return((stlibrd_t
*) NULL
);
4634 memset(brdp
, 0, sizeof(stlibrd_t
));
4635 brdp
->magic
= STLI_BOARDMAGIC
;
4639 /*****************************************************************************/
4642 * Scan through all the boards in the configuration and see what we
4646 static int stli_initbrds(void)
4648 stlibrd_t
*brdp
, *nxtbrdp
;
4653 printk(KERN_DEBUG
"stli_initbrds()\n");
4656 if (stli_nrbrds
> STL_MAXBRDS
) {
4657 printk(KERN_INFO
"STALLION: too many boards in configuration "
4658 "table, truncating to %d\n", STL_MAXBRDS
);
4659 stli_nrbrds
= STL_MAXBRDS
;
4663 * Firstly scan the list of static boards configured. Allocate
4664 * resources and initialize the boards as found. If this is a
4665 * module then let the module args override static configuration.
4667 for (i
= 0; (i
< stli_nrbrds
); i
++) {
4668 confp
= &stli_brdconf
[i
];
4670 stli_parsebrd(confp
, stli_brdsp
[i
]);
4672 if ((brdp
= stli_allocbrd()) == (stlibrd_t
*) NULL
)
4675 brdp
->brdtype
= confp
->brdtype
;
4676 brdp
->iobase
= confp
->ioaddr1
;
4677 brdp
->memaddr
= confp
->memaddr
;
4682 * Static configuration table done, so now use dynamic methods to
4683 * see if any more boards should be configured.
4689 stli_findeisabrds();
4695 * All found boards are initialized. Now for a little optimization, if
4696 * no boards are sharing the "shared memory" regions then we can just
4697 * leave them all enabled. This is in fact the usual case.
4700 if (stli_nrbrds
> 1) {
4701 for (i
= 0; (i
< stli_nrbrds
); i
++) {
4702 brdp
= stli_brds
[i
];
4703 if (brdp
== (stlibrd_t
*) NULL
)
4705 for (j
= i
+ 1; (j
< stli_nrbrds
); j
++) {
4706 nxtbrdp
= stli_brds
[j
];
4707 if (nxtbrdp
== (stlibrd_t
*) NULL
)
4709 if ((brdp
->membase
>= nxtbrdp
->membase
) &&
4710 (brdp
->membase
<= (nxtbrdp
->membase
+
4711 nxtbrdp
->memsize
- 1))) {
4719 if (stli_shared
== 0) {
4720 for (i
= 0; (i
< stli_nrbrds
); i
++) {
4721 brdp
= stli_brds
[i
];
4722 if (brdp
== (stlibrd_t
*) NULL
)
4724 if (brdp
->state
& BST_FOUND
) {
4726 brdp
->enable
= NULL
;
4727 brdp
->disable
= NULL
;
4735 /*****************************************************************************/
4738 * Code to handle an "staliomem" read operation. This device is the
4739 * contents of the board shared memory. It is used for down loading
4740 * the slave image (and debugging :-)
4743 static ssize_t
stli_memread(struct file
*fp
, char __user
*buf
, size_t count
, loff_t
*offp
)
4745 unsigned long flags
;
4751 printk(KERN_DEBUG
"stli_memread(fp=%x,buf=%x,count=%x,offp=%x)\n",
4752 (int) fp
, (int) buf
, count
, (int) offp
);
4755 brdnr
= iminor(fp
->f_dentry
->d_inode
);
4756 if (brdnr
>= stli_nrbrds
)
4758 brdp
= stli_brds
[brdnr
];
4759 if (brdp
== (stlibrd_t
*) NULL
)
4761 if (brdp
->state
== 0)
4763 if (fp
->f_pos
>= brdp
->memsize
)
4766 size
= MIN(count
, (brdp
->memsize
- fp
->f_pos
));
4772 memptr
= (void *) EBRDGETMEMPTR(brdp
, fp
->f_pos
);
4773 n
= MIN(size
, (brdp
->pagesize
- (((unsigned long) fp
->f_pos
) % brdp
->pagesize
)));
4774 if (copy_to_user(buf
, memptr
, n
)) {
4784 restore_flags(flags
);
4789 /*****************************************************************************/
4792 * Code to handle an "staliomem" write operation. This device is the
4793 * contents of the board shared memory. It is used for down loading
4794 * the slave image (and debugging :-)
4797 static ssize_t
stli_memwrite(struct file
*fp
, const char __user
*buf
, size_t count
, loff_t
*offp
)
4799 unsigned long flags
;
4806 printk(KERN_DEBUG
"stli_memwrite(fp=%x,buf=%x,count=%x,offp=%x)\n",
4807 (int) fp
, (int) buf
, count
, (int) offp
);
4810 brdnr
= iminor(fp
->f_dentry
->d_inode
);
4811 if (brdnr
>= stli_nrbrds
)
4813 brdp
= stli_brds
[brdnr
];
4814 if (brdp
== (stlibrd_t
*) NULL
)
4816 if (brdp
->state
== 0)
4818 if (fp
->f_pos
>= brdp
->memsize
)
4821 chbuf
= (char __user
*) buf
;
4822 size
= MIN(count
, (brdp
->memsize
- fp
->f_pos
));
4828 memptr
= (void *) EBRDGETMEMPTR(brdp
, fp
->f_pos
);
4829 n
= MIN(size
, (brdp
->pagesize
- (((unsigned long) fp
->f_pos
) % brdp
->pagesize
)));
4830 if (copy_from_user(memptr
, chbuf
, n
)) {
4840 restore_flags(flags
);
4845 /*****************************************************************************/
4848 * Return the board stats structure to user app.
4851 static int stli_getbrdstats(combrd_t __user
*bp
)
4856 if (copy_from_user(&stli_brdstats
, bp
, sizeof(combrd_t
)))
4858 if (stli_brdstats
.brd
>= STL_MAXBRDS
)
4860 brdp
= stli_brds
[stli_brdstats
.brd
];
4861 if (brdp
== (stlibrd_t
*) NULL
)
4864 memset(&stli_brdstats
, 0, sizeof(combrd_t
));
4865 stli_brdstats
.brd
= brdp
->brdnr
;
4866 stli_brdstats
.type
= brdp
->brdtype
;
4867 stli_brdstats
.hwid
= 0;
4868 stli_brdstats
.state
= brdp
->state
;
4869 stli_brdstats
.ioaddr
= brdp
->iobase
;
4870 stli_brdstats
.memaddr
= brdp
->memaddr
;
4871 stli_brdstats
.nrpanels
= brdp
->nrpanels
;
4872 stli_brdstats
.nrports
= brdp
->nrports
;
4873 for (i
= 0; (i
< brdp
->nrpanels
); i
++) {
4874 stli_brdstats
.panels
[i
].panel
= i
;
4875 stli_brdstats
.panels
[i
].hwid
= brdp
->panelids
[i
];
4876 stli_brdstats
.panels
[i
].nrports
= brdp
->panels
[i
];
4879 if (copy_to_user(bp
, &stli_brdstats
, sizeof(combrd_t
)))
4884 /*****************************************************************************/
4887 * Resolve the referenced port number into a port struct pointer.
4890 static stliport_t
*stli_getport(int brdnr
, int panelnr
, int portnr
)
4895 if ((brdnr
< 0) || (brdnr
>= STL_MAXBRDS
))
4896 return((stliport_t
*) NULL
);
4897 brdp
= stli_brds
[brdnr
];
4898 if (brdp
== (stlibrd_t
*) NULL
)
4899 return((stliport_t
*) NULL
);
4900 for (i
= 0; (i
< panelnr
); i
++)
4901 portnr
+= brdp
->panels
[i
];
4902 if ((portnr
< 0) || (portnr
>= brdp
->nrports
))
4903 return((stliport_t
*) NULL
);
4904 return(brdp
->ports
[portnr
]);
4907 /*****************************************************************************/
4910 * Return the port stats structure to user app. A NULL port struct
4911 * pointer passed in means that we need to find out from the app
4912 * what port to get stats for (used through board control device).
4915 static int stli_portcmdstats(stliport_t
*portp
)
4917 unsigned long flags
;
4921 memset(&stli_comstats
, 0, sizeof(comstats_t
));
4923 if (portp
== (stliport_t
*) NULL
)
4925 brdp
= stli_brds
[portp
->brdnr
];
4926 if (brdp
== (stlibrd_t
*) NULL
)
4929 if (brdp
->state
& BST_STARTED
) {
4930 if ((rc
= stli_cmdwait(brdp
, portp
, A_GETSTATS
,
4931 &stli_cdkstats
, sizeof(asystats_t
), 1)) < 0)
4934 memset(&stli_cdkstats
, 0, sizeof(asystats_t
));
4937 stli_comstats
.brd
= portp
->brdnr
;
4938 stli_comstats
.panel
= portp
->panelnr
;
4939 stli_comstats
.port
= portp
->portnr
;
4940 stli_comstats
.state
= portp
->state
;
4941 stli_comstats
.flags
= portp
->flags
;
4945 if (portp
->tty
!= (struct tty_struct
*) NULL
) {
4946 if (portp
->tty
->driver_data
== portp
) {
4947 stli_comstats
.ttystate
= portp
->tty
->flags
;
4948 stli_comstats
.rxbuffered
= portp
->tty
->flip
.count
;
4949 if (portp
->tty
->termios
!= (struct termios
*) NULL
) {
4950 stli_comstats
.cflags
= portp
->tty
->termios
->c_cflag
;
4951 stli_comstats
.iflags
= portp
->tty
->termios
->c_iflag
;
4952 stli_comstats
.oflags
= portp
->tty
->termios
->c_oflag
;
4953 stli_comstats
.lflags
= portp
->tty
->termios
->c_lflag
;
4957 restore_flags(flags
);
4959 stli_comstats
.txtotal
= stli_cdkstats
.txchars
;
4960 stli_comstats
.rxtotal
= stli_cdkstats
.rxchars
+ stli_cdkstats
.ringover
;
4961 stli_comstats
.txbuffered
= stli_cdkstats
.txringq
;
4962 stli_comstats
.rxbuffered
+= stli_cdkstats
.rxringq
;
4963 stli_comstats
.rxoverrun
= stli_cdkstats
.overruns
;
4964 stli_comstats
.rxparity
= stli_cdkstats
.parity
;
4965 stli_comstats
.rxframing
= stli_cdkstats
.framing
;
4966 stli_comstats
.rxlost
= stli_cdkstats
.ringover
;
4967 stli_comstats
.rxbreaks
= stli_cdkstats
.rxbreaks
;
4968 stli_comstats
.txbreaks
= stli_cdkstats
.txbreaks
;
4969 stli_comstats
.txxon
= stli_cdkstats
.txstart
;
4970 stli_comstats
.txxoff
= stli_cdkstats
.txstop
;
4971 stli_comstats
.rxxon
= stli_cdkstats
.rxstart
;
4972 stli_comstats
.rxxoff
= stli_cdkstats
.rxstop
;
4973 stli_comstats
.rxrtsoff
= stli_cdkstats
.rtscnt
/ 2;
4974 stli_comstats
.rxrtson
= stli_cdkstats
.rtscnt
- stli_comstats
.rxrtsoff
;
4975 stli_comstats
.modem
= stli_cdkstats
.dcdcnt
;
4976 stli_comstats
.hwid
= stli_cdkstats
.hwid
;
4977 stli_comstats
.signals
= stli_mktiocm(stli_cdkstats
.signals
);
4982 /*****************************************************************************/
4985 * Return the port stats structure to user app. A NULL port struct
4986 * pointer passed in means that we need to find out from the app
4987 * what port to get stats for (used through board control device).
4990 static int stli_getportstats(stliport_t
*portp
, comstats_t __user
*cp
)
4996 if (copy_from_user(&stli_comstats
, cp
, sizeof(comstats_t
)))
4998 portp
= stli_getport(stli_comstats
.brd
, stli_comstats
.panel
,
4999 stli_comstats
.port
);
5004 brdp
= stli_brds
[portp
->brdnr
];
5008 if ((rc
= stli_portcmdstats(portp
)) < 0)
5011 return copy_to_user(cp
, &stli_comstats
, sizeof(comstats_t
)) ?
5015 /*****************************************************************************/
5018 * Clear the port stats structure. We also return it zeroed out...
5021 static int stli_clrportstats(stliport_t
*portp
, comstats_t __user
*cp
)
5027 if (copy_from_user(&stli_comstats
, cp
, sizeof(comstats_t
)))
5029 portp
= stli_getport(stli_comstats
.brd
, stli_comstats
.panel
,
5030 stli_comstats
.port
);
5035 brdp
= stli_brds
[portp
->brdnr
];
5039 if (brdp
->state
& BST_STARTED
) {
5040 if ((rc
= stli_cmdwait(brdp
, portp
, A_CLEARSTATS
, NULL
, 0, 0)) < 0)
5044 memset(&stli_comstats
, 0, sizeof(comstats_t
));
5045 stli_comstats
.brd
= portp
->brdnr
;
5046 stli_comstats
.panel
= portp
->panelnr
;
5047 stli_comstats
.port
= portp
->portnr
;
5049 if (copy_to_user(cp
, &stli_comstats
, sizeof(comstats_t
)))
5054 /*****************************************************************************/
5057 * Return the entire driver ports structure to a user app.
5060 static int stli_getportstruct(stliport_t __user
*arg
)
5064 if (copy_from_user(&stli_dummyport
, arg
, sizeof(stliport_t
)))
5066 portp
= stli_getport(stli_dummyport
.brdnr
, stli_dummyport
.panelnr
,
5067 stli_dummyport
.portnr
);
5070 if (copy_to_user(arg
, portp
, sizeof(stliport_t
)))
5075 /*****************************************************************************/
5078 * Return the entire driver board structure to a user app.
5081 static int stli_getbrdstruct(stlibrd_t __user
*arg
)
5085 if (copy_from_user(&stli_dummybrd
, arg
, sizeof(stlibrd_t
)))
5087 if ((stli_dummybrd
.brdnr
< 0) || (stli_dummybrd
.brdnr
>= STL_MAXBRDS
))
5089 brdp
= stli_brds
[stli_dummybrd
.brdnr
];
5092 if (copy_to_user(arg
, brdp
, sizeof(stlibrd_t
)))
5097 /*****************************************************************************/
5100 * The "staliomem" device is also required to do some special operations on
5101 * the board. We need to be able to send an interrupt to the board,
5102 * reset it, and start/stop it.
5105 static int stli_memioctl(struct inode
*ip
, struct file
*fp
, unsigned int cmd
, unsigned long arg
)
5108 int brdnr
, rc
, done
;
5109 void __user
*argp
= (void __user
*)arg
;
5112 printk(KERN_DEBUG
"stli_memioctl(ip=%x,fp=%x,cmd=%x,arg=%x)\n",
5113 (int) ip
, (int) fp
, cmd
, (int) arg
);
5117 * First up handle the board independent ioctls.
5123 case COM_GETPORTSTATS
:
5124 rc
= stli_getportstats(NULL
, argp
);
5127 case COM_CLRPORTSTATS
:
5128 rc
= stli_clrportstats(NULL
, argp
);
5131 case COM_GETBRDSTATS
:
5132 rc
= stli_getbrdstats(argp
);
5136 rc
= stli_getportstruct(argp
);
5140 rc
= stli_getbrdstruct(argp
);
5149 * Now handle the board specific ioctls. These all depend on the
5150 * minor number of the device they were called from.
5153 if (brdnr
>= STL_MAXBRDS
)
5155 brdp
= stli_brds
[brdnr
];
5158 if (brdp
->state
== 0)
5166 rc
= stli_startbrd(brdp
);
5169 brdp
->state
&= ~BST_STARTED
;
5172 brdp
->state
&= ~BST_STARTED
;
5174 if (stli_shared
== 0) {
5175 if (brdp
->reenable
!= NULL
)
5176 (* brdp
->reenable
)(brdp
);
5187 static struct tty_operations stli_ops
= {
5189 .close
= stli_close
,
5190 .write
= stli_write
,
5191 .put_char
= stli_putchar
,
5192 .flush_chars
= stli_flushchars
,
5193 .write_room
= stli_writeroom
,
5194 .chars_in_buffer
= stli_charsinbuffer
,
5195 .ioctl
= stli_ioctl
,
5196 .set_termios
= stli_settermios
,
5197 .throttle
= stli_throttle
,
5198 .unthrottle
= stli_unthrottle
,
5200 .start
= stli_start
,
5201 .hangup
= stli_hangup
,
5202 .flush_buffer
= stli_flushbuffer
,
5203 .break_ctl
= stli_breakctl
,
5204 .wait_until_sent
= stli_waituntilsent
,
5205 .send_xchar
= stli_sendxchar
,
5206 .read_proc
= stli_readproc
,
5207 .tiocmget
= stli_tiocmget
,
5208 .tiocmset
= stli_tiocmset
,
5211 /*****************************************************************************/
5213 int __init
stli_init(void)
5216 printk(KERN_INFO
"%s: version %s\n", stli_drvtitle
, stli_drvversion
);
5220 stli_serial
= alloc_tty_driver(STL_MAXBRDS
* STL_MAXPORTS
);
5225 * Allocate a temporary write buffer.
5227 stli_tmpwritebuf
= (char *) stli_memalloc(STLI_TXBUFSIZE
);
5228 if (stli_tmpwritebuf
== (char *) NULL
)
5229 printk(KERN_ERR
"STALLION: failed to allocate memory "
5230 "(size=%d)\n", STLI_TXBUFSIZE
);
5231 stli_txcookbuf
= stli_memalloc(STLI_TXBUFSIZE
);
5232 if (stli_txcookbuf
== (char *) NULL
)
5233 printk(KERN_ERR
"STALLION: failed to allocate memory "
5234 "(size=%d)\n", STLI_TXBUFSIZE
);
5237 * Set up a character driver for the shared memory region. We need this
5238 * to down load the slave code image. Also it is a useful debugging tool.
5240 if (register_chrdev(STL_SIOMEMMAJOR
, "staliomem", &stli_fsiomem
))
5241 printk(KERN_ERR
"STALLION: failed to register serial memory "
5244 devfs_mk_dir("staliomem");
5245 istallion_class
= class_create(THIS_MODULE
, "staliomem");
5246 for (i
= 0; i
< 4; i
++) {
5247 devfs_mk_cdev(MKDEV(STL_SIOMEMMAJOR
, i
),
5248 S_IFCHR
| S_IRUSR
| S_IWUSR
,
5250 class_device_create(istallion_class
, MKDEV(STL_SIOMEMMAJOR
, i
),
5251 NULL
, "staliomem%d", i
);
5255 * Set up the tty driver structure and register us as a driver.
5257 stli_serial
->owner
= THIS_MODULE
;
5258 stli_serial
->driver_name
= stli_drvname
;
5259 stli_serial
->name
= stli_serialname
;
5260 stli_serial
->major
= STL_SERIALMAJOR
;
5261 stli_serial
->minor_start
= 0;
5262 stli_serial
->type
= TTY_DRIVER_TYPE_SERIAL
;
5263 stli_serial
->subtype
= SERIAL_TYPE_NORMAL
;
5264 stli_serial
->init_termios
= stli_deftermios
;
5265 stli_serial
->flags
= TTY_DRIVER_REAL_RAW
;
5266 tty_set_operations(stli_serial
, &stli_ops
);
5268 if (tty_register_driver(stli_serial
)) {
5269 put_tty_driver(stli_serial
);
5270 printk(KERN_ERR
"STALLION: failed to register serial driver\n");
5276 /*****************************************************************************/