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/device.h>
43 #include <linux/wait.h>
46 #include <asm/uaccess.h>
49 #include <linux/pci.h>
52 /*****************************************************************************/
55 * Define different board types. Not all of the following board types
56 * are supported by this driver. But I will use the standard "assigned"
57 * board numbers. Currently supported boards are abbreviated as:
58 * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and
62 #define BRD_STALLION 1
64 #define BRD_ONBOARD2 3
67 #define BRD_BRUMBY16 6
68 #define BRD_ONBOARDE 7
69 #define BRD_ONBOARD32 9
70 #define BRD_ONBOARD2_32 10
71 #define BRD_ONBOARDRS 11
79 #define BRD_ECH64PCI 27
80 #define BRD_EASYIOPCI 28
83 #define BRD_BRUMBY BRD_BRUMBY4
86 * Define a configuration structure to hold the board configuration.
87 * Need to set this up in the code (for now) with the boards that are
88 * to be configured into the system. This is what needs to be modified
89 * when adding/removing/modifying boards. Each line entry in the
90 * stli_brdconf[] array is a board. Each line contains io/irq/memory
91 * ranges for that board (as well as what type of board it is).
93 * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },
94 * This line will configure an EasyConnection 8/64 at io address 2a0,
95 * and shared memory address of cc000. Multiple EasyConnection 8/64
96 * boards can share the same shared memory address space. No interrupt
97 * is required for this board type.
99 * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 },
100 * This line will configure an EasyConnection 8/64 EISA in slot 5 and
101 * shared memory address of 0x80000000 (2 GByte). Multiple
102 * EasyConnection 8/64 EISA boards can share the same shared memory
103 * address space. No interrupt is required for this board type.
105 * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 },
106 * This line will configure an ONboard (ISA type) at io address 240,
107 * and shared memory address of d0000. Multiple ONboards can share
108 * the same shared memory address space. No interrupt required.
110 * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 },
111 * This line will configure a Brumby board (any number of ports!) at
112 * io address 360 and shared memory address of c8000. All Brumby boards
113 * configured into a system must have their own separate io and memory
114 * addresses. No interrupt is required.
116 * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 },
117 * This line will configure an original Stallion board at io address 330
118 * and shared memory address d0000 (this would only be valid for a "V4.0"
119 * or Rev.O Stallion board). All Stallion boards configured into the
120 * system must have their own separate io and memory addresses. No
121 * interrupt is required.
128 unsigned long memaddr;
133 static stlconf_t stli_brdconf[] = {
134 /*{ BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },*/
137 static int stli_nrbrds = ARRAY_SIZE(stli_brdconf);
140 * There is some experimental EISA board detection code in this driver.
141 * By default it is disabled, but for those that want to try it out,
142 * then set the define below to be 1.
144 #define STLI_EISAPROBE 0
146 /*****************************************************************************/
149 * Define some important driver characteristics. Device major numbers
150 * allocated as per Linux Device Registry.
152 #ifndef STL_SIOMEMMAJOR
153 #define STL_SIOMEMMAJOR 28
155 #ifndef STL_SERIALMAJOR
156 #define STL_SERIALMAJOR 24
158 #ifndef STL_CALLOUTMAJOR
159 #define STL_CALLOUTMAJOR 25
162 /*****************************************************************************/
165 * Define our local driver identity first. Set up stuff to deal with
166 * all the local structures required by a serial tty driver.
168 static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver";
169 static char *stli_drvname = "istallion";
170 static char *stli_drvversion = "5.6.0";
171 static char *stli_serialname = "ttyE";
173 static struct tty_driver *stli_serial;
176 * We will need to allocate a temporary write buffer for chars that
177 * come direct from user space. The problem is that a copy from user
178 * space might cause a page fault (typically on a system that is
179 * swapping!). All ports will share one buffer - since if the system
180 * is already swapping a shared buffer won't make things any worse.
182 static char *stli_tmpwritebuf;
184 #define STLI_TXBUFSIZE 4096
187 * Use a fast local buffer for cooked characters. Typically a whole
188 * bunch of cooked characters come in for a port, 1 at a time. So we
189 * save those up into a local buffer, then write out the whole lot
190 * with a large memcpy. Just use 1 buffer for all ports, since its
191 * use it is only need for short periods of time by each port.
193 static char *stli_txcookbuf;
194 static int stli_txcooksize;
195 static int stli_txcookrealsize;
196 static struct tty_struct *stli_txcooktty;
199 * Define a local default termios struct. All ports will be created
200 * with this termios initially. Basically all it defines is a raw port
201 * at 9600 baud, 8 data bits, no parity, 1 stop bit.
203 static struct termios stli_deftermios = {
204 .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL),
209 * Define global stats structures. Not used often, and can be
210 * re-used for each stats call.
212 static comstats_t stli_comstats;
213 static combrd_t stli_brdstats;
214 static asystats_t stli_cdkstats;
215 static stlibrd_t stli_dummybrd;
216 static stliport_t stli_dummyport;
218 /*****************************************************************************/
220 static stlibrd_t *stli_brds[STL_MAXBRDS];
222 static int stli_shared;
225 * Per board state flags. Used with the state field of the board struct.
226 * Not really much here... All we need to do is keep track of whether
227 * the board has been detected, and whether it is actually running a slave
230 #define BST_FOUND 0x1
231 #define BST_STARTED 0x2
234 * Define the set of port state flags. These are marked for internal
235 * state purposes only, usually to do with the state of communications
236 * with the slave. Most of them need to be updated atomically, so always
237 * use the bit setting operations (unless protected by cli/sti).
239 #define ST_INITIALIZING 1
245 #define ST_DOFLUSHRX 7
246 #define ST_DOFLUSHTX 8
249 #define ST_GETSIGS 11
252 * Define an array of board names as printable strings. Handy for
253 * referencing boards when printing trace and stuff.
255 static char *stli_brdnames[] = {
288 /*****************************************************************************/
292 * Define some string labels for arguments passed from the module
293 * load line. These allow for easy board definitions, and easy
294 * modification of the io, memory and irq resoucres.
297 static char *board0[8];
298 static char *board1[8];
299 static char *board2[8];
300 static char *board3[8];
302 static char **stli_brdsp[] = {
310 * Define a set of common board names, and types. This is used to
311 * parse any module arguments.
314 typedef struct stlibrdtype {
319 static stlibrdtype_t stli_brdstr[] = {
320 { "stallion", BRD_STALLION },
321 { "1", BRD_STALLION },
322 { "brumby", BRD_BRUMBY },
323 { "brumby4", BRD_BRUMBY },
324 { "brumby/4", BRD_BRUMBY },
325 { "brumby-4", BRD_BRUMBY },
326 { "brumby8", BRD_BRUMBY },
327 { "brumby/8", BRD_BRUMBY },
328 { "brumby-8", BRD_BRUMBY },
329 { "brumby16", BRD_BRUMBY },
330 { "brumby/16", BRD_BRUMBY },
331 { "brumby-16", BRD_BRUMBY },
333 { "onboard2", BRD_ONBOARD2 },
334 { "onboard-2", BRD_ONBOARD2 },
335 { "onboard/2", BRD_ONBOARD2 },
336 { "onboard-mc", BRD_ONBOARD2 },
337 { "onboard/mc", BRD_ONBOARD2 },
338 { "onboard-mca", BRD_ONBOARD2 },
339 { "onboard/mca", BRD_ONBOARD2 },
340 { "3", BRD_ONBOARD2 },
341 { "onboard", BRD_ONBOARD },
342 { "onboardat", BRD_ONBOARD },
343 { "4", BRD_ONBOARD },
344 { "onboarde", BRD_ONBOARDE },
345 { "onboard-e", BRD_ONBOARDE },
346 { "onboard/e", BRD_ONBOARDE },
347 { "onboard-ei", BRD_ONBOARDE },
348 { "onboard/ei", BRD_ONBOARDE },
349 { "7", BRD_ONBOARDE },
351 { "ecpat", BRD_ECP },
352 { "ec8/64", BRD_ECP },
353 { "ec8/64-at", BRD_ECP },
354 { "ec8/64-isa", BRD_ECP },
356 { "ecpe", BRD_ECPE },
357 { "ecpei", BRD_ECPE },
358 { "ec8/64-e", BRD_ECPE },
359 { "ec8/64-ei", BRD_ECPE },
361 { "ecpmc", BRD_ECPMC },
362 { "ec8/64-mc", BRD_ECPMC },
363 { "ec8/64-mca", BRD_ECPMC },
365 { "ecppci", BRD_ECPPCI },
366 { "ec/ra", BRD_ECPPCI },
367 { "ec/ra-pc", BRD_ECPPCI },
368 { "ec/ra-pci", BRD_ECPPCI },
369 { "29", BRD_ECPPCI },
373 * Define the module agruments.
375 MODULE_AUTHOR("Greg Ungerer");
376 MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver");
377 MODULE_LICENSE("GPL");
380 module_param_array(board0, charp, NULL, 0);
381 MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]");
382 module_param_array(board1, charp, NULL, 0);
383 MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]");
384 module_param_array(board2, charp, NULL, 0);
385 MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]");
386 module_param_array(board3, charp, NULL, 0);
387 MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]");
392 * Set up a default memory address table for EISA board probing.
393 * The default addresses are all bellow 1Mbyte, which has to be the
394 * case anyway. They should be safe, since we only read values from
395 * them, and interrupts are disabled while we do it. If the higher
396 * memory support is compiled in then we also try probing around
397 * the 1Gb, 2Gb and 3Gb areas as well...
399 static unsigned long stli_eisamemprobeaddrs[] = {
400 0xc0000, 0xd0000, 0xe0000, 0xf0000,
401 0x80000000, 0x80010000, 0x80020000, 0x80030000,
402 0x40000000, 0x40010000, 0x40020000, 0x40030000,
403 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000,
404 0xff000000, 0xff010000, 0xff020000, 0xff030000,
407 static int stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs);
410 * Define the Stallion PCI vendor and device IDs.
413 #ifndef PCI_VENDOR_ID_STALLION
414 #define PCI_VENDOR_ID_STALLION 0x124d
416 #ifndef PCI_DEVICE_ID_ECRA
417 #define PCI_DEVICE_ID_ECRA 0x0004
420 static struct pci_device_id istallion_pci_tbl[] = {
421 { PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
424 MODULE_DEVICE_TABLE(pci, istallion_pci_tbl);
426 #endif /* CONFIG_PCI */
428 /*****************************************************************************/
431 * Hardware configuration info for ECP boards. These defines apply
432 * to the directly accessible io ports of the ECP. There is a set of
433 * defines for each ECP board type, ISA, EISA, MCA and PCI.
437 #define ECP_MEMSIZE (128 * 1024)
438 #define ECP_PCIMEMSIZE (256 * 1024)
440 #define ECP_ATPAGESIZE (4 * 1024)
441 #define ECP_MCPAGESIZE (4 * 1024)
442 #define ECP_EIPAGESIZE (64 * 1024)
443 #define ECP_PCIPAGESIZE (64 * 1024)
445 #define STL_EISAID 0x8c4e
448 * Important defines for the ISA class of ECP board.
451 #define ECP_ATCONFR 1
452 #define ECP_ATMEMAR 2
453 #define ECP_ATMEMPR 3
454 #define ECP_ATSTOP 0x1
455 #define ECP_ATINTENAB 0x10
456 #define ECP_ATENABLE 0x20
457 #define ECP_ATDISABLE 0x00
458 #define ECP_ATADDRMASK 0x3f000
459 #define ECP_ATADDRSHFT 12
462 * Important defines for the EISA class of ECP board.
465 #define ECP_EIMEMARL 1
466 #define ECP_EICONFR 2
467 #define ECP_EIMEMARH 3
468 #define ECP_EIENABLE 0x1
469 #define ECP_EIDISABLE 0x0
470 #define ECP_EISTOP 0x4
471 #define ECP_EIEDGE 0x00
472 #define ECP_EILEVEL 0x80
473 #define ECP_EIADDRMASKL 0x00ff0000
474 #define ECP_EIADDRSHFTL 16
475 #define ECP_EIADDRMASKH 0xff000000
476 #define ECP_EIADDRSHFTH 24
477 #define ECP_EIBRDENAB 0xc84
479 #define ECP_EISAID 0x4
482 * Important defines for the Micro-channel class of ECP board.
483 * (It has a lot in common with the ISA boards.)
486 #define ECP_MCCONFR 1
487 #define ECP_MCSTOP 0x20
488 #define ECP_MCENABLE 0x80
489 #define ECP_MCDISABLE 0x00
492 * Important defines for the PCI class of ECP board.
493 * (It has a lot in common with the other ECP boards.)
495 #define ECP_PCIIREG 0
496 #define ECP_PCICONFR 1
497 #define ECP_PCISTOP 0x01
500 * Hardware configuration info for ONboard and Brumby boards. These
501 * defines apply to the directly accessible io ports of these boards.
503 #define ONB_IOSIZE 16
504 #define ONB_MEMSIZE (64 * 1024)
505 #define ONB_ATPAGESIZE (64 * 1024)
506 #define ONB_MCPAGESIZE (64 * 1024)
507 #define ONB_EIMEMSIZE (128 * 1024)
508 #define ONB_EIPAGESIZE (64 * 1024)
511 * Important defines for the ISA class of ONboard board.
514 #define ONB_ATMEMAR 1
515 #define ONB_ATCONFR 2
516 #define ONB_ATSTOP 0x4
517 #define ONB_ATENABLE 0x01
518 #define ONB_ATDISABLE 0x00
519 #define ONB_ATADDRMASK 0xff0000
520 #define ONB_ATADDRSHFT 16
522 #define ONB_MEMENABLO 0
523 #define ONB_MEMENABHI 0x02
526 * Important defines for the EISA class of ONboard board.
529 #define ONB_EIMEMARL 1
530 #define ONB_EICONFR 2
531 #define ONB_EIMEMARH 3
532 #define ONB_EIENABLE 0x1
533 #define ONB_EIDISABLE 0x0
534 #define ONB_EISTOP 0x4
535 #define ONB_EIEDGE 0x00
536 #define ONB_EILEVEL 0x80
537 #define ONB_EIADDRMASKL 0x00ff0000
538 #define ONB_EIADDRSHFTL 16
539 #define ONB_EIADDRMASKH 0xff000000
540 #define ONB_EIADDRSHFTH 24
541 #define ONB_EIBRDENAB 0xc84
543 #define ONB_EISAID 0x1
546 * Important defines for the Brumby boards. They are pretty simple,
547 * there is not much that is programmably configurable.
549 #define BBY_IOSIZE 16
550 #define BBY_MEMSIZE (64 * 1024)
551 #define BBY_PAGESIZE (16 * 1024)
554 #define BBY_ATCONFR 1
555 #define BBY_ATSTOP 0x4
558 * Important defines for the Stallion boards. They are pretty simple,
559 * there is not much that is programmably configurable.
561 #define STAL_IOSIZE 16
562 #define STAL_MEMSIZE (64 * 1024)
563 #define STAL_PAGESIZE (64 * 1024)
566 * Define the set of status register values for EasyConnection panels.
567 * The signature will return with the status value for each panel. From
568 * this we can determine what is attached to the board - before we have
569 * actually down loaded any code to it.
571 #define ECH_PNLSTATUS 2
572 #define ECH_PNL16PORT 0x20
573 #define ECH_PNLIDMASK 0x07
574 #define ECH_PNLXPID 0x40
575 #define ECH_PNLINTRPEND 0x80
578 * Define some macros to do things to the board. Even those these boards
579 * are somewhat related there is often significantly different ways of
580 * doing some operation on it (like enable, paging, reset, etc). So each
581 * board class has a set of functions which do the commonly required
582 * operations. The macros below basically just call these functions,
583 * generally checking for a NULL function - which means that the board
584 * needs nothing done to it to achieve this operation!
586 #define EBRDINIT(brdp) \
587 if (brdp->init != NULL) \
590 #define EBRDENABLE(brdp) \
591 if (brdp->enable != NULL) \
592 (* brdp->enable)(brdp);
594 #define EBRDDISABLE(brdp) \
595 if (brdp->disable != NULL) \
596 (* brdp->disable)(brdp);
598 #define EBRDINTR(brdp) \
599 if (brdp->intr != NULL) \
600 (* brdp->intr)(brdp);
602 #define EBRDRESET(brdp) \
603 if (brdp->reset != NULL) \
604 (* brdp->reset)(brdp);
606 #define EBRDGETMEMPTR(brdp,offset) \
607 (* brdp->getmemptr)(brdp, offset, __LINE__)
610 * Define the maximal baud rate, and the default baud base for ports.
612 #define STL_MAXBAUD 460800
613 #define STL_BAUDBASE 115200
614 #define STL_CLOSEDELAY (5 * HZ / 10)
616 /*****************************************************************************/
619 * Define macros to extract a brd or port number from a minor number.
621 #define MINOR2BRD(min) (((min) & 0xc0) >> 6)
622 #define MINOR2PORT(min) ((min) & 0x3f)
625 * Define a baud rate table that converts termios baud rate selector
626 * into the actual baud rate value. All baud rate calculations are based
627 * on the actual baud rate required.
629 static unsigned int stli_baudrates[] = {
630 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
631 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600
634 /*****************************************************************************/
637 * Define some handy local macros...
640 #define MIN(a,b) (((a) <= (b)) ? (a) : (b))
643 #define TOLOWER(x) ((((x) >= 'A') && ((x) <= 'Z')) ? ((x) + 0x20) : (x))
645 /*****************************************************************************/
648 * Prototype all functions in this driver!
652 static void stli_argbrds(void);
653 static int stli_parsebrd(stlconf_t *confp, char **argp);
655 static unsigned long stli_atol(char *str);
659 static int stli_open(struct tty_struct *tty, struct file *filp);
660 static void stli_close(struct tty_struct *tty, struct file *filp);
661 static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count);
662 static void stli_putchar(struct tty_struct *tty, unsigned char ch);
663 static void stli_flushchars(struct tty_struct *tty);
664 static int stli_writeroom(struct tty_struct *tty);
665 static int stli_charsinbuffer(struct tty_struct *tty);
666 static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg);
667 static void stli_settermios(struct tty_struct *tty, struct termios *old);
668 static void stli_throttle(struct tty_struct *tty);
669 static void stli_unthrottle(struct tty_struct *tty);
670 static void stli_stop(struct tty_struct *tty);
671 static void stli_start(struct tty_struct *tty);
672 static void stli_flushbuffer(struct tty_struct *tty);
673 static void stli_breakctl(struct tty_struct *tty, int state);
674 static void stli_waituntilsent(struct tty_struct *tty, int timeout);
675 static void stli_sendxchar(struct tty_struct *tty, char ch);
676 static void stli_hangup(struct tty_struct *tty);
677 static int stli_portinfo(stlibrd_t *brdp, stliport_t *portp, int portnr, char *pos);
679 static int stli_brdinit(stlibrd_t *brdp);
680 static int stli_startbrd(stlibrd_t *brdp);
681 static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp);
682 static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp);
683 static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg);
684 static void stli_brdpoll(stlibrd_t *brdp, volatile cdkhdr_t *hdrp);
685 static void stli_poll(unsigned long arg);
686 static int stli_hostcmd(stlibrd_t *brdp, stliport_t *portp);
687 static int stli_initopen(stlibrd_t *brdp, stliport_t *portp);
688 static int stli_rawopen(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait);
689 static int stli_rawclose(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait);
690 static int stli_waitcarrier(stlibrd_t *brdp, stliport_t *portp, struct file *filp);
691 static void stli_dohangup(void *arg);
692 static int stli_setport(stliport_t *portp);
693 static int stli_cmdwait(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback);
694 static void stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback);
695 static void stli_dodelaycmd(stliport_t *portp, volatile cdkctrl_t *cp);
696 static void stli_mkasyport(stliport_t *portp, asyport_t *pp, struct termios *tiosp);
697 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts);
698 static long stli_mktiocm(unsigned long sigvalue);
699 static void stli_read(stlibrd_t *brdp, stliport_t *portp);
700 static int stli_getserial(stliport_t *portp, struct serial_struct __user *sp);
701 static int stli_setserial(stliport_t *portp, struct serial_struct __user *sp);
702 static int stli_getbrdstats(combrd_t __user *bp);
703 static int stli_getportstats(stliport_t *portp, comstats_t __user *cp);
704 static int stli_portcmdstats(stliport_t *portp);
705 static int stli_clrportstats(stliport_t *portp, comstats_t __user *cp);
706 static int stli_getportstruct(stliport_t __user *arg);
707 static int stli_getbrdstruct(stlibrd_t __user *arg);
708 static stlibrd_t *stli_allocbrd(void);
710 static void stli_ecpinit(stlibrd_t *brdp);
711 static void stli_ecpenable(stlibrd_t *brdp);
712 static void stli_ecpdisable(stlibrd_t *brdp);
713 static char *stli_ecpgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
714 static void stli_ecpreset(stlibrd_t *brdp);
715 static void stli_ecpintr(stlibrd_t *brdp);
716 static void stli_ecpeiinit(stlibrd_t *brdp);
717 static void stli_ecpeienable(stlibrd_t *brdp);
718 static void stli_ecpeidisable(stlibrd_t *brdp);
719 static char *stli_ecpeigetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
720 static void stli_ecpeireset(stlibrd_t *brdp);
721 static void stli_ecpmcenable(stlibrd_t *brdp);
722 static void stli_ecpmcdisable(stlibrd_t *brdp);
723 static char *stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
724 static void stli_ecpmcreset(stlibrd_t *brdp);
725 static void stli_ecppciinit(stlibrd_t *brdp);
726 static char *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
727 static void stli_ecppcireset(stlibrd_t *brdp);
729 static void stli_onbinit(stlibrd_t *brdp);
730 static void stli_onbenable(stlibrd_t *brdp);
731 static void stli_onbdisable(stlibrd_t *brdp);
732 static char *stli_onbgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
733 static void stli_onbreset(stlibrd_t *brdp);
734 static void stli_onbeinit(stlibrd_t *brdp);
735 static void stli_onbeenable(stlibrd_t *brdp);
736 static void stli_onbedisable(stlibrd_t *brdp);
737 static char *stli_onbegetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
738 static void stli_onbereset(stlibrd_t *brdp);
739 static void stli_bbyinit(stlibrd_t *brdp);
740 static char *stli_bbygetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
741 static void stli_bbyreset(stlibrd_t *brdp);
742 static void stli_stalinit(stlibrd_t *brdp);
743 static char *stli_stalgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
744 static void stli_stalreset(stlibrd_t *brdp);
746 static stliport_t *stli_getport(int brdnr, int panelnr, int portnr);
748 static int stli_initecp(stlibrd_t *brdp);
749 static int stli_initonb(stlibrd_t *brdp);
750 static int stli_eisamemprobe(stlibrd_t *brdp);
751 static int stli_initports(stlibrd_t *brdp);
754 static int stli_initpcibrd(int brdtype, struct pci_dev *devp);
757 /*****************************************************************************/
760 * Define the driver info for a user level shared memory device. This
761 * device will work sort of like the /dev/kmem device - except that it
762 * will give access to the shared memory on the Stallion intelligent
763 * board. This is also a very useful debugging tool.
765 static struct file_operations stli_fsiomem = {
766 .owner = THIS_MODULE,
767 .read = stli_memread,
768 .write = stli_memwrite,
769 .ioctl = stli_memioctl,
772 /*****************************************************************************/
775 * Define a timer_list entry for our poll routine. The slave board
776 * is polled every so often to see if anything needs doing. This is
777 * much cheaper on host cpu than using interrupts. It turns out to
778 * not increase character latency by much either...
780 static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0);
782 static int stli_timeron;
785 * Define the calculation for the timeout routine.
787 #define STLI_TIMEOUT (jiffies + 1)
789 /*****************************************************************************/
791 static struct class *istallion_class;
796 * Loadable module initialization stuff.
799 static int __init istallion_module_init(void)
804 printk("init_module()\n");
810 restore_flags(flags);
815 /*****************************************************************************/
817 static void __exit istallion_module_exit(void)
825 printk("cleanup_module()\n");
828 printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle,
835 * Free up all allocated resources used by the ports. This includes
836 * memory and interrupts.
840 del_timer(&stli_timerlist);
843 i = tty_unregister_driver(stli_serial);
845 printk("STALLION: failed to un-register tty driver, "
847 restore_flags(flags);
850 put_tty_driver(stli_serial);
851 for (i = 0; i < 4; i++)
852 class_device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, i));
853 class_destroy(istallion_class);
854 if ((i = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem")))
855 printk("STALLION: failed to un-register serial memory device, "
858 kfree(stli_tmpwritebuf);
859 kfree(stli_txcookbuf);
861 for (i = 0; (i < stli_nrbrds); i++) {
862 if ((brdp = stli_brds[i]) == (stlibrd_t *) NULL)
864 for (j = 0; (j < STL_MAXPORTS); j++) {
865 portp = brdp->ports[j];
866 if (portp != (stliport_t *) NULL) {
867 if (portp->tty != (struct tty_struct *) NULL)
868 tty_hangup(portp->tty);
873 iounmap(brdp->membase);
874 if (brdp->iosize > 0)
875 release_region(brdp->iobase, brdp->iosize);
877 stli_brds[i] = (stlibrd_t *) NULL;
880 restore_flags(flags);
883 module_init(istallion_module_init);
884 module_exit(istallion_module_exit);
886 /*****************************************************************************/
889 * Check for any arguments passed in on the module load command line.
892 static void stli_argbrds(void)
899 printk("stli_argbrds()\n");
902 for (i = stli_nrbrds; i < ARRAY_SIZE(stli_brdsp); i++) {
903 memset(&conf, 0, sizeof(conf));
904 if (stli_parsebrd(&conf, stli_brdsp[i]) == 0)
906 if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL)
910 brdp->brdtype = conf.brdtype;
911 brdp->iobase = conf.ioaddr1;
912 brdp->memaddr = conf.memaddr;
917 /*****************************************************************************/
920 * Convert an ascii string number into an unsigned long.
923 static unsigned long stli_atol(char *str)
931 if ((*sp == '0') && (*(sp+1) == 'x')) {
934 } else if (*sp == '0') {
941 for (; (*sp != 0); sp++) {
942 c = (*sp > '9') ? (TOLOWER(*sp) - 'a' + 10) : (*sp - '0');
943 if ((c < 0) || (c >= base)) {
944 printk("STALLION: invalid argument %s\n", str);
948 val = (val * base) + c;
953 /*****************************************************************************/
956 * Parse the supplied argument string, into the board conf struct.
959 static int stli_parsebrd(stlconf_t *confp, char **argp)
965 printk("stli_parsebrd(confp=%x,argp=%x)\n", (int) confp, (int) argp);
968 if ((argp[0] == (char *) NULL) || (*argp[0] == 0))
971 for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++)
974 for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) {
975 if (strcmp(stli_brdstr[i].name, argp[0]) == 0)
978 if (i == ARRAY_SIZE(stli_brdstr)) {
979 printk("STALLION: unknown board name, %s?\n", argp[0]);
983 confp->brdtype = stli_brdstr[i].type;
984 if ((argp[1] != (char *) NULL) && (*argp[1] != 0))
985 confp->ioaddr1 = stli_atol(argp[1]);
986 if ((argp[2] != (char *) NULL) && (*argp[2] != 0))
987 confp->memaddr = stli_atol(argp[2]);
993 /*****************************************************************************/
995 static int stli_open(struct tty_struct *tty, struct file *filp)
999 unsigned int minordev;
1000 int brdnr, portnr, rc;
1003 printk("stli_open(tty=%x,filp=%x): device=%s\n", (int) tty,
1004 (int) filp, tty->name);
1007 minordev = tty->index;
1008 brdnr = MINOR2BRD(minordev);
1009 if (brdnr >= stli_nrbrds)
1011 brdp = stli_brds[brdnr];
1012 if (brdp == (stlibrd_t *) NULL)
1014 if ((brdp->state & BST_STARTED) == 0)
1016 portnr = MINOR2PORT(minordev);
1017 if ((portnr < 0) || (portnr > brdp->nrports))
1020 portp = brdp->ports[portnr];
1021 if (portp == (stliport_t *) NULL)
1023 if (portp->devnr < 1)
1028 * Check if this port is in the middle of closing. If so then wait
1029 * until it is closed then return error status based on flag settings.
1030 * The sleep here does not need interrupt protection since the wakeup
1031 * for it is done with the same context.
1033 if (portp->flags & ASYNC_CLOSING) {
1034 interruptible_sleep_on(&portp->close_wait);
1035 if (portp->flags & ASYNC_HUP_NOTIFY)
1037 return(-ERESTARTSYS);
1041 * On the first open of the device setup the port hardware, and
1042 * initialize the per port data structure. Since initializing the port
1043 * requires several commands to the board we will need to wait for any
1044 * other open that is already initializing the port.
1047 tty->driver_data = portp;
1050 wait_event_interruptible(portp->raw_wait,
1051 !test_bit(ST_INITIALIZING, &portp->state));
1052 if (signal_pending(current))
1053 return(-ERESTARTSYS);
1055 if ((portp->flags & ASYNC_INITIALIZED) == 0) {
1056 set_bit(ST_INITIALIZING, &portp->state);
1057 if ((rc = stli_initopen(brdp, portp)) >= 0) {
1058 portp->flags |= ASYNC_INITIALIZED;
1059 clear_bit(TTY_IO_ERROR, &tty->flags);
1061 clear_bit(ST_INITIALIZING, &portp->state);
1062 wake_up_interruptible(&portp->raw_wait);
1068 * Check if this port is in the middle of closing. If so then wait
1069 * until it is closed then return error status, based on flag settings.
1070 * The sleep here does not need interrupt protection since the wakeup
1071 * for it is done with the same context.
1073 if (portp->flags & ASYNC_CLOSING) {
1074 interruptible_sleep_on(&portp->close_wait);
1075 if (portp->flags & ASYNC_HUP_NOTIFY)
1077 return(-ERESTARTSYS);
1081 * Based on type of open being done check if it can overlap with any
1082 * previous opens still in effect. If we are a normal serial device
1083 * then also we might have to wait for carrier.
1085 if (!(filp->f_flags & O_NONBLOCK)) {
1086 if ((rc = stli_waitcarrier(brdp, portp, filp)) != 0)
1089 portp->flags |= ASYNC_NORMAL_ACTIVE;
1093 /*****************************************************************************/
1095 static void stli_close(struct tty_struct *tty, struct file *filp)
1099 unsigned long flags;
1102 printk("stli_close(tty=%x,filp=%x)\n", (int) tty, (int) filp);
1105 portp = tty->driver_data;
1106 if (portp == (stliport_t *) NULL)
1111 if (tty_hung_up_p(filp)) {
1112 restore_flags(flags);
1115 if ((tty->count == 1) && (portp->refcount != 1))
1116 portp->refcount = 1;
1117 if (portp->refcount-- > 1) {
1118 restore_flags(flags);
1122 portp->flags |= ASYNC_CLOSING;
1125 * May want to wait for data to drain before closing. The BUSY flag
1126 * keeps track of whether we are still transmitting or not. It is
1127 * updated by messages from the slave - indicating when all chars
1128 * really have drained.
1130 if (tty == stli_txcooktty)
1131 stli_flushchars(tty);
1133 if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE)
1134 tty_wait_until_sent(tty, portp->closing_wait);
1136 portp->flags &= ~ASYNC_INITIALIZED;
1137 brdp = stli_brds[portp->brdnr];
1138 stli_rawclose(brdp, portp, 0, 0);
1139 if (tty->termios->c_cflag & HUPCL) {
1140 stli_mkasysigs(&portp->asig, 0, 0);
1141 if (test_bit(ST_CMDING, &portp->state))
1142 set_bit(ST_DOSIGS, &portp->state);
1144 stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig,
1145 sizeof(asysigs_t), 0);
1147 clear_bit(ST_TXBUSY, &portp->state);
1148 clear_bit(ST_RXSTOP, &portp->state);
1149 set_bit(TTY_IO_ERROR, &tty->flags);
1150 if (tty->ldisc.flush_buffer)
1151 (tty->ldisc.flush_buffer)(tty);
1152 set_bit(ST_DOFLUSHRX, &portp->state);
1153 stli_flushbuffer(tty);
1156 portp->tty = (struct tty_struct *) NULL;
1158 if (portp->openwaitcnt) {
1159 if (portp->close_delay)
1160 msleep_interruptible(jiffies_to_msecs(portp->close_delay));
1161 wake_up_interruptible(&portp->open_wait);
1164 portp->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
1165 wake_up_interruptible(&portp->close_wait);
1166 restore_flags(flags);
1169 /*****************************************************************************/
1172 * Carry out first open operations on a port. This involves a number of
1173 * commands to be sent to the slave. We need to open the port, set the
1174 * notification events, set the initial port settings, get and set the
1175 * initial signal values. We sleep and wait in between each one. But
1176 * this still all happens pretty quickly.
1179 static int stli_initopen(stlibrd_t *brdp, stliport_t *portp)
1181 struct tty_struct *tty;
1187 printk("stli_initopen(brdp=%x,portp=%x)\n", (int) brdp, (int) portp);
1190 if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0)
1193 memset(&nt, 0, sizeof(asynotify_t));
1194 nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK);
1196 if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt,
1197 sizeof(asynotify_t), 0)) < 0)
1201 if (tty == (struct tty_struct *) NULL)
1203 stli_mkasyport(portp, &aport, tty->termios);
1204 if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport,
1205 sizeof(asyport_t), 0)) < 0)
1208 set_bit(ST_GETSIGS, &portp->state);
1209 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig,
1210 sizeof(asysigs_t), 1)) < 0)
1212 if (test_and_clear_bit(ST_GETSIGS, &portp->state))
1213 portp->sigs = stli_mktiocm(portp->asig.sigvalue);
1214 stli_mkasysigs(&portp->asig, 1, 1);
1215 if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1216 sizeof(asysigs_t), 0)) < 0)
1222 /*****************************************************************************/
1225 * Send an open message to the slave. This will sleep waiting for the
1226 * acknowledgement, so must have user context. We need to co-ordinate
1227 * with close events here, since we don't want open and close events
1231 static int stli_rawopen(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait)
1233 volatile cdkhdr_t *hdrp;
1234 volatile cdkctrl_t *cp;
1235 volatile unsigned char *bits;
1236 unsigned long flags;
1240 printk("stli_rawopen(brdp=%x,portp=%x,arg=%x,wait=%d)\n",
1241 (int) brdp, (int) portp, (int) arg, wait);
1245 * Send a message to the slave to open this port.
1251 * Slave is already closing this port. This can happen if a hangup
1252 * occurs on this port. So we must wait until it is complete. The
1253 * order of opens and closes may not be preserved across shared
1254 * memory, so we must wait until it is complete.
1256 wait_event_interruptible(portp->raw_wait,
1257 !test_bit(ST_CLOSING, &portp->state));
1258 if (signal_pending(current)) {
1259 restore_flags(flags);
1260 return -ERESTARTSYS;
1264 * Everything is ready now, so write the open message into shared
1265 * memory. Once the message is in set the service bits to say that
1266 * this port wants service.
1269 cp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1272 hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1273 bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset +
1275 *bits |= portp->portbit;
1279 restore_flags(flags);
1284 * Slave is in action, so now we must wait for the open acknowledgment
1288 set_bit(ST_OPENING, &portp->state);
1289 wait_event_interruptible(portp->raw_wait,
1290 !test_bit(ST_OPENING, &portp->state));
1291 if (signal_pending(current))
1293 restore_flags(flags);
1295 if ((rc == 0) && (portp->rc != 0))
1300 /*****************************************************************************/
1303 * Send a close message to the slave. Normally this will sleep waiting
1304 * for the acknowledgement, but if wait parameter is 0 it will not. If
1305 * wait is true then must have user context (to sleep).
1308 static int stli_rawclose(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait)
1310 volatile cdkhdr_t *hdrp;
1311 volatile cdkctrl_t *cp;
1312 volatile unsigned char *bits;
1313 unsigned long flags;
1317 printk("stli_rawclose(brdp=%x,portp=%x,arg=%x,wait=%d)\n",
1318 (int) brdp, (int) portp, (int) arg, wait);
1325 * Slave is already closing this port. This can happen if a hangup
1326 * occurs on this port.
1329 wait_event_interruptible(portp->raw_wait,
1330 !test_bit(ST_CLOSING, &portp->state));
1331 if (signal_pending(current)) {
1332 restore_flags(flags);
1333 return -ERESTARTSYS;
1338 * Write the close command into shared memory.
1341 cp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1344 hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1345 bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset +
1347 *bits |= portp->portbit;
1350 set_bit(ST_CLOSING, &portp->state);
1352 restore_flags(flags);
1357 * Slave is in action, so now we must wait for the open acknowledgment
1361 wait_event_interruptible(portp->raw_wait,
1362 !test_bit(ST_CLOSING, &portp->state));
1363 if (signal_pending(current))
1365 restore_flags(flags);
1367 if ((rc == 0) && (portp->rc != 0))
1372 /*****************************************************************************/
1375 * Send a command to the slave and wait for the response. This must
1376 * have user context (it sleeps). This routine is generic in that it
1377 * can send any type of command. Its purpose is to wait for that command
1378 * to complete (as opposed to initiating the command then returning).
1381 static int stli_cmdwait(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback)
1383 unsigned long flags;
1386 printk("stli_cmdwait(brdp=%x,portp=%x,cmd=%x,arg=%x,size=%d,"
1387 "copyback=%d)\n", (int) brdp, (int) portp, (int) cmd,
1388 (int) arg, size, copyback);
1393 wait_event_interruptible(portp->raw_wait,
1394 !test_bit(ST_CMDING, &portp->state));
1395 if (signal_pending(current)) {
1396 restore_flags(flags);
1397 return -ERESTARTSYS;
1400 stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
1402 wait_event_interruptible(portp->raw_wait,
1403 !test_bit(ST_CMDING, &portp->state));
1404 if (signal_pending(current)) {
1405 restore_flags(flags);
1406 return -ERESTARTSYS;
1408 restore_flags(flags);
1415 /*****************************************************************************/
1418 * Send the termios settings for this port to the slave. This sleeps
1419 * waiting for the command to complete - so must have user context.
1422 static int stli_setport(stliport_t *portp)
1428 printk("stli_setport(portp=%x)\n", (int) portp);
1431 if (portp == (stliport_t *) NULL)
1433 if (portp->tty == (struct tty_struct *) NULL)
1435 if ((portp->brdnr < 0) && (portp->brdnr >= stli_nrbrds))
1437 brdp = stli_brds[portp->brdnr];
1438 if (brdp == (stlibrd_t *) NULL)
1441 stli_mkasyport(portp, &aport, portp->tty->termios);
1442 return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0));
1445 /*****************************************************************************/
1448 * Possibly need to wait for carrier (DCD signal) to come high. Say
1449 * maybe because if we are clocal then we don't need to wait...
1452 static int stli_waitcarrier(stlibrd_t *brdp, stliport_t *portp, struct file *filp)
1454 unsigned long flags;
1458 printk("stli_waitcarrier(brdp=%x,portp=%x,filp=%x)\n",
1459 (int) brdp, (int) portp, (int) filp);
1465 if (portp->tty->termios->c_cflag & CLOCAL)
1470 portp->openwaitcnt++;
1471 if (! tty_hung_up_p(filp))
1475 stli_mkasysigs(&portp->asig, 1, 1);
1476 if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS,
1477 &portp->asig, sizeof(asysigs_t), 0)) < 0)
1479 if (tty_hung_up_p(filp) ||
1480 ((portp->flags & ASYNC_INITIALIZED) == 0)) {
1481 if (portp->flags & ASYNC_HUP_NOTIFY)
1487 if (((portp->flags & ASYNC_CLOSING) == 0) &&
1488 (doclocal || (portp->sigs & TIOCM_CD))) {
1491 if (signal_pending(current)) {
1495 interruptible_sleep_on(&portp->open_wait);
1498 if (! tty_hung_up_p(filp))
1500 portp->openwaitcnt--;
1501 restore_flags(flags);
1506 /*****************************************************************************/
1509 * Write routine. Take the data and put it in the shared memory ring
1510 * queue. If port is not already sending chars then need to mark the
1511 * service bits for this port.
1514 static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count)
1516 volatile cdkasy_t *ap;
1517 volatile cdkhdr_t *hdrp;
1518 volatile unsigned char *bits;
1519 unsigned char *shbuf, *chbuf;
1522 unsigned int len, stlen, head, tail, size;
1523 unsigned long flags;
1526 printk("stli_write(tty=%x,buf=%x,count=%d)\n",
1527 (int) tty, (int) buf, count);
1530 if ((tty == (struct tty_struct *) NULL) ||
1531 (stli_tmpwritebuf == (char *) NULL))
1533 if (tty == stli_txcooktty)
1534 stli_flushchars(tty);
1535 portp = tty->driver_data;
1536 if (portp == (stliport_t *) NULL)
1538 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
1540 brdp = stli_brds[portp->brdnr];
1541 if (brdp == (stlibrd_t *) NULL)
1543 chbuf = (unsigned char *) buf;
1546 * All data is now local, shove as much as possible into shared memory.
1551 ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr);
1552 head = (unsigned int) ap->txq.head;
1553 tail = (unsigned int) ap->txq.tail;
1554 if (tail != ((unsigned int) ap->txq.tail))
1555 tail = (unsigned int) ap->txq.tail;
1556 size = portp->txsize;
1558 len = size - (head - tail) - 1;
1559 stlen = size - head;
1561 len = tail - head - 1;
1565 len = MIN(len, count);
1567 shbuf = (char *) EBRDGETMEMPTR(brdp, portp->txoffset);
1570 stlen = MIN(len, stlen);
1571 memcpy((shbuf + head), chbuf, stlen);
1582 ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr);
1583 ap->txq.head = head;
1584 if (test_bit(ST_TXBUSY, &portp->state)) {
1585 if (ap->changed.data & DT_TXEMPTY)
1586 ap->changed.data &= ~DT_TXEMPTY;
1588 hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1589 bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset +
1591 *bits |= portp->portbit;
1592 set_bit(ST_TXBUSY, &portp->state);
1595 restore_flags(flags);
1600 /*****************************************************************************/
1603 * Output a single character. We put it into a temporary local buffer
1604 * (for speed) then write out that buffer when the flushchars routine
1605 * is called. There is a safety catch here so that if some other port
1606 * writes chars before the current buffer has been, then we write them
1607 * first them do the new ports.
1610 static void stli_putchar(struct tty_struct *tty, unsigned char ch)
1613 printk("stli_putchar(tty=%x,ch=%x)\n", (int) tty, (int) ch);
1616 if (tty == (struct tty_struct *) NULL)
1618 if (tty != stli_txcooktty) {
1619 if (stli_txcooktty != (struct tty_struct *) NULL)
1620 stli_flushchars(stli_txcooktty);
1621 stli_txcooktty = tty;
1624 stli_txcookbuf[stli_txcooksize++] = ch;
1627 /*****************************************************************************/
1630 * Transfer characters from the local TX cooking buffer to the board.
1631 * We sort of ignore the tty that gets passed in here. We rely on the
1632 * info stored with the TX cook buffer to tell us which port to flush
1633 * the data on. In any case we clean out the TX cook buffer, for re-use
1637 static void stli_flushchars(struct tty_struct *tty)
1639 volatile cdkhdr_t *hdrp;
1640 volatile unsigned char *bits;
1641 volatile cdkasy_t *ap;
1642 struct tty_struct *cooktty;
1645 unsigned int len, stlen, head, tail, size, count, cooksize;
1646 unsigned char *buf, *shbuf;
1647 unsigned long flags;
1650 printk("stli_flushchars(tty=%x)\n", (int) tty);
1653 cooksize = stli_txcooksize;
1654 cooktty = stli_txcooktty;
1655 stli_txcooksize = 0;
1656 stli_txcookrealsize = 0;
1657 stli_txcooktty = (struct tty_struct *) NULL;
1659 if (tty == (struct tty_struct *) NULL)
1661 if (cooktty == (struct tty_struct *) NULL)
1668 portp = tty->driver_data;
1669 if (portp == (stliport_t *) NULL)
1671 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
1673 brdp = stli_brds[portp->brdnr];
1674 if (brdp == (stlibrd_t *) NULL)
1681 ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr);
1682 head = (unsigned int) ap->txq.head;
1683 tail = (unsigned int) ap->txq.tail;
1684 if (tail != ((unsigned int) ap->txq.tail))
1685 tail = (unsigned int) ap->txq.tail;
1686 size = portp->txsize;
1688 len = size - (head - tail) - 1;
1689 stlen = size - head;
1691 len = tail - head - 1;
1695 len = MIN(len, cooksize);
1697 shbuf = (char *) EBRDGETMEMPTR(brdp, portp->txoffset);
1698 buf = stli_txcookbuf;
1701 stlen = MIN(len, stlen);
1702 memcpy((shbuf + head), buf, stlen);
1713 ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr);
1714 ap->txq.head = head;
1716 if (test_bit(ST_TXBUSY, &portp->state)) {
1717 if (ap->changed.data & DT_TXEMPTY)
1718 ap->changed.data &= ~DT_TXEMPTY;
1720 hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1721 bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset +
1723 *bits |= portp->portbit;
1724 set_bit(ST_TXBUSY, &portp->state);
1727 restore_flags(flags);
1730 /*****************************************************************************/
1732 static int stli_writeroom(struct tty_struct *tty)
1734 volatile cdkasyrq_t *rp;
1737 unsigned int head, tail, len;
1738 unsigned long flags;
1741 printk("stli_writeroom(tty=%x)\n", (int) tty);
1744 if (tty == (struct tty_struct *) NULL)
1746 if (tty == stli_txcooktty) {
1747 if (stli_txcookrealsize != 0) {
1748 len = stli_txcookrealsize - stli_txcooksize;
1753 portp = tty->driver_data;
1754 if (portp == (stliport_t *) NULL)
1756 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
1758 brdp = stli_brds[portp->brdnr];
1759 if (brdp == (stlibrd_t *) NULL)
1765 rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1766 head = (unsigned int) rp->head;
1767 tail = (unsigned int) rp->tail;
1768 if (tail != ((unsigned int) rp->tail))
1769 tail = (unsigned int) rp->tail;
1770 len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head);
1773 restore_flags(flags);
1775 if (tty == stli_txcooktty) {
1776 stli_txcookrealsize = len;
1777 len -= stli_txcooksize;
1782 /*****************************************************************************/
1785 * Return the number of characters in the transmit buffer. Normally we
1786 * will return the number of chars in the shared memory ring queue.
1787 * We need to kludge around the case where the shared memory buffer is
1788 * empty but not all characters have drained yet, for this case just
1789 * return that there is 1 character in the buffer!
1792 static int stli_charsinbuffer(struct tty_struct *tty)
1794 volatile cdkasyrq_t *rp;
1797 unsigned int head, tail, len;
1798 unsigned long flags;
1801 printk("stli_charsinbuffer(tty=%x)\n", (int) tty);
1804 if (tty == (struct tty_struct *) NULL)
1806 if (tty == stli_txcooktty)
1807 stli_flushchars(tty);
1808 portp = tty->driver_data;
1809 if (portp == (stliport_t *) NULL)
1811 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
1813 brdp = stli_brds[portp->brdnr];
1814 if (brdp == (stlibrd_t *) NULL)
1820 rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1821 head = (unsigned int) rp->head;
1822 tail = (unsigned int) rp->tail;
1823 if (tail != ((unsigned int) rp->tail))
1824 tail = (unsigned int) rp->tail;
1825 len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head));
1826 if ((len == 0) && test_bit(ST_TXBUSY, &portp->state))
1829 restore_flags(flags);
1834 /*****************************************************************************/
1837 * Generate the serial struct info.
1840 static int stli_getserial(stliport_t *portp, struct serial_struct __user *sp)
1842 struct serial_struct sio;
1846 printk("stli_getserial(portp=%x,sp=%x)\n", (int) portp, (int) sp);
1849 memset(&sio, 0, sizeof(struct serial_struct));
1850 sio.type = PORT_UNKNOWN;
1851 sio.line = portp->portnr;
1853 sio.flags = portp->flags;
1854 sio.baud_base = portp->baud_base;
1855 sio.close_delay = portp->close_delay;
1856 sio.closing_wait = portp->closing_wait;
1857 sio.custom_divisor = portp->custom_divisor;
1858 sio.xmit_fifo_size = 0;
1861 brdp = stli_brds[portp->brdnr];
1862 if (brdp != (stlibrd_t *) NULL)
1863 sio.port = brdp->iobase;
1865 return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ?
1869 /*****************************************************************************/
1872 * Set port according to the serial struct info.
1873 * At this point we do not do any auto-configure stuff, so we will
1874 * just quietly ignore any requests to change irq, etc.
1877 static int stli_setserial(stliport_t *portp, struct serial_struct __user *sp)
1879 struct serial_struct sio;
1883 printk("stli_setserial(portp=%p,sp=%p)\n", portp, sp);
1886 if (copy_from_user(&sio, sp, sizeof(struct serial_struct)))
1888 if (!capable(CAP_SYS_ADMIN)) {
1889 if ((sio.baud_base != portp->baud_base) ||
1890 (sio.close_delay != portp->close_delay) ||
1891 ((sio.flags & ~ASYNC_USR_MASK) !=
1892 (portp->flags & ~ASYNC_USR_MASK)))
1896 portp->flags = (portp->flags & ~ASYNC_USR_MASK) |
1897 (sio.flags & ASYNC_USR_MASK);
1898 portp->baud_base = sio.baud_base;
1899 portp->close_delay = sio.close_delay;
1900 portp->closing_wait = sio.closing_wait;
1901 portp->custom_divisor = sio.custom_divisor;
1903 if ((rc = stli_setport(portp)) < 0)
1908 /*****************************************************************************/
1910 static int stli_tiocmget(struct tty_struct *tty, struct file *file)
1912 stliport_t *portp = tty->driver_data;
1916 if (portp == (stliport_t *) NULL)
1918 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
1920 brdp = stli_brds[portp->brdnr];
1921 if (brdp == (stlibrd_t *) NULL)
1923 if (tty->flags & (1 << TTY_IO_ERROR))
1926 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS,
1927 &portp->asig, sizeof(asysigs_t), 1)) < 0)
1930 return stli_mktiocm(portp->asig.sigvalue);
1933 static int stli_tiocmset(struct tty_struct *tty, struct file *file,
1934 unsigned int set, unsigned int clear)
1936 stliport_t *portp = tty->driver_data;
1938 int rts = -1, dtr = -1;
1940 if (portp == (stliport_t *) NULL)
1942 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
1944 brdp = stli_brds[portp->brdnr];
1945 if (brdp == (stlibrd_t *) NULL)
1947 if (tty->flags & (1 << TTY_IO_ERROR))
1950 if (set & TIOCM_RTS)
1952 if (set & TIOCM_DTR)
1954 if (clear & TIOCM_RTS)
1956 if (clear & TIOCM_DTR)
1959 stli_mkasysigs(&portp->asig, dtr, rts);
1961 return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1962 sizeof(asysigs_t), 0);
1965 static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg)
1971 void __user *argp = (void __user *)arg;
1974 printk("stli_ioctl(tty=%x,file=%x,cmd=%x,arg=%x)\n",
1975 (int) tty, (int) file, cmd, (int) arg);
1978 if (tty == (struct tty_struct *) NULL)
1980 portp = tty->driver_data;
1981 if (portp == (stliport_t *) NULL)
1983 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
1985 brdp = stli_brds[portp->brdnr];
1986 if (brdp == (stlibrd_t *) NULL)
1989 if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
1990 (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) {
1991 if (tty->flags & (1 << TTY_IO_ERROR))
1999 rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0),
2000 (unsigned __user *) arg);
2003 if ((rc = get_user(ival, (unsigned __user *) arg)) == 0)
2004 tty->termios->c_cflag =
2005 (tty->termios->c_cflag & ~CLOCAL) |
2006 (ival ? CLOCAL : 0);
2009 rc = stli_getserial(portp, argp);
2012 rc = stli_setserial(portp, argp);
2015 rc = put_user(portp->pflag, (unsigned __user *)argp);
2018 if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0)
2019 stli_setport(portp);
2021 case COM_GETPORTSTATS:
2022 rc = stli_getportstats(portp, argp);
2024 case COM_CLRPORTSTATS:
2025 rc = stli_clrportstats(portp, argp);
2031 case TIOCSERGSTRUCT:
2032 case TIOCSERGETMULTI:
2033 case TIOCSERSETMULTI:
2042 /*****************************************************************************/
2045 * This routine assumes that we have user context and can sleep.
2046 * Looks like it is true for the current ttys implementation..!!
2049 static void stli_settermios(struct tty_struct *tty, struct termios *old)
2053 struct termios *tiosp;
2057 printk("stli_settermios(tty=%x,old=%x)\n", (int) tty, (int) old);
2060 if (tty == (struct tty_struct *) NULL)
2062 portp = tty->driver_data;
2063 if (portp == (stliport_t *) NULL)
2065 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
2067 brdp = stli_brds[portp->brdnr];
2068 if (brdp == (stlibrd_t *) NULL)
2071 tiosp = tty->termios;
2072 if ((tiosp->c_cflag == old->c_cflag) &&
2073 (tiosp->c_iflag == old->c_iflag))
2076 stli_mkasyport(portp, &aport, tiosp);
2077 stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0);
2078 stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1);
2079 stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
2080 sizeof(asysigs_t), 0);
2081 if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0))
2082 tty->hw_stopped = 0;
2083 if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL))
2084 wake_up_interruptible(&portp->open_wait);
2087 /*****************************************************************************/
2090 * Attempt to flow control who ever is sending us data. We won't really
2091 * do any flow control action here. We can't directly, and even if we
2092 * wanted to we would have to send a command to the slave. The slave
2093 * knows how to flow control, and will do so when its buffers reach its
2094 * internal high water marks. So what we will do is set a local state
2095 * bit that will stop us sending any RX data up from the poll routine
2096 * (which is the place where RX data from the slave is handled).
2099 static void stli_throttle(struct tty_struct *tty)
2104 printk("stli_throttle(tty=%x)\n", (int) tty);
2107 if (tty == (struct tty_struct *) NULL)
2109 portp = tty->driver_data;
2110 if (portp == (stliport_t *) NULL)
2113 set_bit(ST_RXSTOP, &portp->state);
2116 /*****************************************************************************/
2119 * Unflow control the device sending us data... That means that all
2120 * we have to do is clear the RXSTOP state bit. The next poll call
2121 * will then be able to pass the RX data back up.
2124 static void stli_unthrottle(struct tty_struct *tty)
2129 printk("stli_unthrottle(tty=%x)\n", (int) tty);
2132 if (tty == (struct tty_struct *) NULL)
2134 portp = tty->driver_data;
2135 if (portp == (stliport_t *) NULL)
2138 clear_bit(ST_RXSTOP, &portp->state);
2141 /*****************************************************************************/
2144 * Stop the transmitter. Basically to do this we will just turn TX
2148 static void stli_stop(struct tty_struct *tty)
2155 printk("stli_stop(tty=%x)\n", (int) tty);
2158 if (tty == (struct tty_struct *) NULL)
2160 portp = tty->driver_data;
2161 if (portp == (stliport_t *) NULL)
2163 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
2165 brdp = stli_brds[portp->brdnr];
2166 if (brdp == (stlibrd_t *) NULL)
2169 memset(&actrl, 0, sizeof(asyctrl_t));
2170 actrl.txctrl = CT_STOPFLOW;
2172 stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
2176 /*****************************************************************************/
2179 * Start the transmitter again. Just turn TX interrupts back on.
2182 static void stli_start(struct tty_struct *tty)
2189 printk("stli_start(tty=%x)\n", (int) tty);
2192 if (tty == (struct tty_struct *) NULL)
2194 portp = tty->driver_data;
2195 if (portp == (stliport_t *) NULL)
2197 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
2199 brdp = stli_brds[portp->brdnr];
2200 if (brdp == (stlibrd_t *) NULL)
2203 memset(&actrl, 0, sizeof(asyctrl_t));
2204 actrl.txctrl = CT_STARTFLOW;
2206 stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
2210 /*****************************************************************************/
2213 * Scheduler called hang up routine. This is called from the scheduler,
2214 * not direct from the driver "poll" routine. We can't call it there
2215 * since the real local hangup code will enable/disable the board and
2216 * other things that we can't do while handling the poll. Much easier
2217 * to deal with it some time later (don't really care when, hangups
2218 * aren't that time critical).
2221 static void stli_dohangup(void *arg)
2226 printk(KERN_DEBUG "stli_dohangup(portp=%x)\n", (int) arg);
2230 * FIXME: There's a module removal race here: tty_hangup
2231 * calls schedule_work which will call into this
2234 portp = (stliport_t *) arg;
2235 if (portp != (stliport_t *) NULL) {
2236 if (portp->tty != (struct tty_struct *) NULL) {
2237 tty_hangup(portp->tty);
2242 /*****************************************************************************/
2245 * Hangup this port. This is pretty much like closing the port, only
2246 * a little more brutal. No waiting for data to drain. Shutdown the
2247 * port and maybe drop signals. This is rather tricky really. We want
2248 * to close the port as well.
2251 static void stli_hangup(struct tty_struct *tty)
2255 unsigned long flags;
2258 printk(KERN_DEBUG "stli_hangup(tty=%x)\n", (int) tty);
2261 if (tty == (struct tty_struct *) NULL)
2263 portp = tty->driver_data;
2264 if (portp == (stliport_t *) NULL)
2266 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
2268 brdp = stli_brds[portp->brdnr];
2269 if (brdp == (stlibrd_t *) NULL)
2272 portp->flags &= ~ASYNC_INITIALIZED;
2276 if (! test_bit(ST_CLOSING, &portp->state))
2277 stli_rawclose(brdp, portp, 0, 0);
2278 if (tty->termios->c_cflag & HUPCL) {
2279 stli_mkasysigs(&portp->asig, 0, 0);
2280 if (test_bit(ST_CMDING, &portp->state)) {
2281 set_bit(ST_DOSIGS, &portp->state);
2282 set_bit(ST_DOFLUSHTX, &portp->state);
2283 set_bit(ST_DOFLUSHRX, &portp->state);
2285 stli_sendcmd(brdp, portp, A_SETSIGNALSF,
2286 &portp->asig, sizeof(asysigs_t), 0);
2289 restore_flags(flags);
2291 clear_bit(ST_TXBUSY, &portp->state);
2292 clear_bit(ST_RXSTOP, &portp->state);
2293 set_bit(TTY_IO_ERROR, &tty->flags);
2294 portp->tty = (struct tty_struct *) NULL;
2295 portp->flags &= ~ASYNC_NORMAL_ACTIVE;
2296 portp->refcount = 0;
2297 wake_up_interruptible(&portp->open_wait);
2300 /*****************************************************************************/
2303 * Flush characters from the lower buffer. We may not have user context
2304 * so we cannot sleep waiting for it to complete. Also we need to check
2305 * if there is chars for this port in the TX cook buffer, and flush them
2309 static void stli_flushbuffer(struct tty_struct *tty)
2313 unsigned long ftype, flags;
2316 printk(KERN_DEBUG "stli_flushbuffer(tty=%x)\n", (int) tty);
2319 if (tty == (struct tty_struct *) NULL)
2321 portp = tty->driver_data;
2322 if (portp == (stliport_t *) NULL)
2324 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
2326 brdp = stli_brds[portp->brdnr];
2327 if (brdp == (stlibrd_t *) NULL)
2332 if (tty == stli_txcooktty) {
2333 stli_txcooktty = (struct tty_struct *) NULL;
2334 stli_txcooksize = 0;
2335 stli_txcookrealsize = 0;
2337 if (test_bit(ST_CMDING, &portp->state)) {
2338 set_bit(ST_DOFLUSHTX, &portp->state);
2341 if (test_bit(ST_DOFLUSHRX, &portp->state)) {
2343 clear_bit(ST_DOFLUSHRX, &portp->state);
2345 stli_sendcmd(brdp, portp, A_FLUSH, &ftype,
2346 sizeof(unsigned long), 0);
2348 restore_flags(flags);
2350 wake_up_interruptible(&tty->write_wait);
2351 if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
2352 tty->ldisc.write_wakeup)
2353 (tty->ldisc.write_wakeup)(tty);
2356 /*****************************************************************************/
2358 static void stli_breakctl(struct tty_struct *tty, int state)
2363 /* long savestate, savetime; */
2366 printk(KERN_DEBUG "stli_breakctl(tty=%x,state=%d)\n", (int) tty, state);
2369 if (tty == (struct tty_struct *) NULL)
2371 portp = tty->driver_data;
2372 if (portp == (stliport_t *) NULL)
2374 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
2376 brdp = stli_brds[portp->brdnr];
2377 if (brdp == (stlibrd_t *) NULL)
2381 * Due to a bug in the tty send_break() code we need to preserve
2382 * the current process state and timeout...
2383 savetime = current->timeout;
2384 savestate = current->state;
2387 arg = (state == -1) ? BREAKON : BREAKOFF;
2388 stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0);
2392 current->timeout = savetime;
2393 current->state = savestate;
2397 /*****************************************************************************/
2399 static void stli_waituntilsent(struct tty_struct *tty, int timeout)
2405 printk(KERN_DEBUG "stli_waituntilsent(tty=%x,timeout=%x)\n", (int) tty, timeout);
2408 if (tty == (struct tty_struct *) NULL)
2410 portp = tty->driver_data;
2411 if (portp == (stliport_t *) NULL)
2416 tend = jiffies + timeout;
2418 while (test_bit(ST_TXBUSY, &portp->state)) {
2419 if (signal_pending(current))
2421 msleep_interruptible(20);
2422 if (time_after_eq(jiffies, tend))
2427 /*****************************************************************************/
2429 static void stli_sendxchar(struct tty_struct *tty, char ch)
2436 printk(KERN_DEBUG "stli_sendxchar(tty=%x,ch=%x)\n", (int) tty, ch);
2439 if (tty == (struct tty_struct *) NULL)
2441 portp = tty->driver_data;
2442 if (portp == (stliport_t *) NULL)
2444 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
2446 brdp = stli_brds[portp->brdnr];
2447 if (brdp == (stlibrd_t *) NULL)
2450 memset(&actrl, 0, sizeof(asyctrl_t));
2451 if (ch == STOP_CHAR(tty)) {
2452 actrl.rxctrl = CT_STOPFLOW;
2453 } else if (ch == START_CHAR(tty)) {
2454 actrl.rxctrl = CT_STARTFLOW;
2456 actrl.txctrl = CT_SENDCHR;
2460 stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
2463 /*****************************************************************************/
2468 * Format info for a specified port. The line is deliberately limited
2469 * to 80 characters. (If it is too long it will be truncated, if too
2470 * short then padded with spaces).
2473 static int stli_portinfo(stlibrd_t *brdp, stliport_t *portp, int portnr, char *pos)
2478 rc = stli_portcmdstats(portp);
2481 if (brdp->state & BST_STARTED) {
2482 switch (stli_comstats.hwid) {
2483 case 0: uart = "2681"; break;
2484 case 1: uart = "SC26198"; break;
2485 default: uart = "CD1400"; break;
2490 sp += sprintf(sp, "%d: uart:%s ", portnr, uart);
2492 if ((brdp->state & BST_STARTED) && (rc >= 0)) {
2493 sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal,
2494 (int) stli_comstats.rxtotal);
2496 if (stli_comstats.rxframing)
2497 sp += sprintf(sp, " fe:%d",
2498 (int) stli_comstats.rxframing);
2499 if (stli_comstats.rxparity)
2500 sp += sprintf(sp, " pe:%d",
2501 (int) stli_comstats.rxparity);
2502 if (stli_comstats.rxbreaks)
2503 sp += sprintf(sp, " brk:%d",
2504 (int) stli_comstats.rxbreaks);
2505 if (stli_comstats.rxoverrun)
2506 sp += sprintf(sp, " oe:%d",
2507 (int) stli_comstats.rxoverrun);
2509 cnt = sprintf(sp, "%s%s%s%s%s ",
2510 (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "",
2511 (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "",
2512 (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "",
2513 (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "",
2514 (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : "");
2519 for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++)
2522 pos[(MAXLINE - 2)] = '+';
2523 pos[(MAXLINE - 1)] = '\n';
2528 /*****************************************************************************/
2531 * Port info, read from the /proc file system.
2534 static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data)
2538 int brdnr, portnr, totalport;
2543 printk(KERN_DEBUG "stli_readproc(page=%x,start=%x,off=%x,count=%d,eof=%x,"
2544 "data=%x\n", (int) page, (int) start, (int) off, count,
2545 (int) eof, (int) data);
2553 pos += sprintf(pos, "%s: version %s", stli_drvtitle,
2555 while (pos < (page + MAXLINE - 1))
2562 * We scan through for each board, panel and port. The offset is
2563 * calculated on the fly, and irrelevant ports are skipped.
2565 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
2566 brdp = stli_brds[brdnr];
2567 if (brdp == (stlibrd_t *) NULL)
2569 if (brdp->state == 0)
2572 maxoff = curoff + (brdp->nrports * MAXLINE);
2573 if (off >= maxoff) {
2578 totalport = brdnr * STL_MAXPORTS;
2579 for (portnr = 0; (portnr < brdp->nrports); portnr++,
2581 portp = brdp->ports[portnr];
2582 if (portp == (stliport_t *) NULL)
2584 if (off >= (curoff += MAXLINE))
2586 if ((pos - page + MAXLINE) > count)
2588 pos += stli_portinfo(brdp, portp, totalport, pos);
2599 /*****************************************************************************/
2602 * Generic send command routine. This will send a message to the slave,
2603 * of the specified type with the specified argument. Must be very
2604 * careful of data that will be copied out from shared memory -
2605 * containing command results. The command completion is all done from
2606 * a poll routine that does not have user context. Therefore you cannot
2607 * copy back directly into user space, or to the kernel stack of a
2608 * process. This routine does not sleep, so can be called from anywhere.
2611 static void stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback)
2613 volatile cdkhdr_t *hdrp;
2614 volatile cdkctrl_t *cp;
2615 volatile unsigned char *bits;
2616 unsigned long flags;
2619 printk(KERN_DEBUG "stli_sendcmd(brdp=%x,portp=%x,cmd=%x,arg=%x,size=%d,"
2620 "copyback=%d)\n", (int) brdp, (int) portp, (int) cmd,
2621 (int) arg, size, copyback);
2627 if (test_bit(ST_CMDING, &portp->state)) {
2628 printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n",
2630 restore_flags(flags);
2635 cp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
2637 memcpy((void *) &(cp->args[0]), arg, size);
2640 portp->argsize = size;
2645 hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2646 bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset +
2648 *bits |= portp->portbit;
2649 set_bit(ST_CMDING, &portp->state);
2651 restore_flags(flags);
2654 /*****************************************************************************/
2657 * Read data from shared memory. This assumes that the shared memory
2658 * is enabled and that interrupts are off. Basically we just empty out
2659 * the shared memory buffer into the tty buffer. Must be careful to
2660 * handle the case where we fill up the tty buffer, but still have
2661 * more chars to unload.
2664 static void stli_read(stlibrd_t *brdp, stliport_t *portp)
2666 volatile cdkasyrq_t *rp;
2667 volatile char *shbuf;
2668 struct tty_struct *tty;
2669 unsigned int head, tail, size;
2670 unsigned int len, stlen;
2673 printk(KERN_DEBUG "stli_read(brdp=%x,portp=%d)\n",
2674 (int) brdp, (int) portp);
2677 if (test_bit(ST_RXSTOP, &portp->state))
2680 if (tty == (struct tty_struct *) NULL)
2683 rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2684 head = (unsigned int) rp->head;
2685 if (head != ((unsigned int) rp->head))
2686 head = (unsigned int) rp->head;
2687 tail = (unsigned int) rp->tail;
2688 size = portp->rxsize;
2693 len = size - (tail - head);
2694 stlen = size - tail;
2697 len = tty_buffer_request_room(tty, len);
2698 /* FIXME : iomap ? */
2699 shbuf = (volatile char *) EBRDGETMEMPTR(brdp, portp->rxoffset);
2702 stlen = MIN(len, stlen);
2703 tty_insert_flip_string(tty, (char *)(shbuf + tail), stlen);
2711 rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2715 set_bit(ST_RXING, &portp->state);
2717 tty_schedule_flip(tty);
2720 /*****************************************************************************/
2723 * Set up and carry out any delayed commands. There is only a small set
2724 * of slave commands that can be done "off-level". So it is not too
2725 * difficult to deal with them here.
2728 static void stli_dodelaycmd(stliport_t *portp, volatile cdkctrl_t *cp)
2732 if (test_bit(ST_DOSIGS, &portp->state)) {
2733 if (test_bit(ST_DOFLUSHTX, &portp->state) &&
2734 test_bit(ST_DOFLUSHRX, &portp->state))
2735 cmd = A_SETSIGNALSF;
2736 else if (test_bit(ST_DOFLUSHTX, &portp->state))
2737 cmd = A_SETSIGNALSFTX;
2738 else if (test_bit(ST_DOFLUSHRX, &portp->state))
2739 cmd = A_SETSIGNALSFRX;
2742 clear_bit(ST_DOFLUSHTX, &portp->state);
2743 clear_bit(ST_DOFLUSHRX, &portp->state);
2744 clear_bit(ST_DOSIGS, &portp->state);
2745 memcpy((void *) &(cp->args[0]), (void *) &portp->asig,
2749 set_bit(ST_CMDING, &portp->state);
2750 } else if (test_bit(ST_DOFLUSHTX, &portp->state) ||
2751 test_bit(ST_DOFLUSHRX, &portp->state)) {
2752 cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0);
2753 cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0);
2754 clear_bit(ST_DOFLUSHTX, &portp->state);
2755 clear_bit(ST_DOFLUSHRX, &portp->state);
2756 memcpy((void *) &(cp->args[0]), (void *) &cmd, sizeof(int));
2759 set_bit(ST_CMDING, &portp->state);
2763 /*****************************************************************************/
2766 * Host command service checking. This handles commands or messages
2767 * coming from the slave to the host. Must have board shared memory
2768 * enabled and interrupts off when called. Notice that by servicing the
2769 * read data last we don't need to change the shared memory pointer
2770 * during processing (which is a slow IO operation).
2771 * Return value indicates if this port is still awaiting actions from
2772 * the slave (like open, command, or even TX data being sent). If 0
2773 * then port is still busy, otherwise no longer busy.
2776 static int stli_hostcmd(stlibrd_t *brdp, stliport_t *portp)
2778 volatile cdkasy_t *ap;
2779 volatile cdkctrl_t *cp;
2780 struct tty_struct *tty;
2782 unsigned long oldsigs;
2786 printk(KERN_DEBUG "stli_hostcmd(brdp=%x,channr=%d)\n",
2787 (int) brdp, channr);
2790 ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr);
2794 * Check if we are waiting for an open completion message.
2796 if (test_bit(ST_OPENING, &portp->state)) {
2797 rc = (int) cp->openarg;
2798 if ((cp->open == 0) && (rc != 0)) {
2803 clear_bit(ST_OPENING, &portp->state);
2804 wake_up_interruptible(&portp->raw_wait);
2809 * Check if we are waiting for a close completion message.
2811 if (test_bit(ST_CLOSING, &portp->state)) {
2812 rc = (int) cp->closearg;
2813 if ((cp->close == 0) && (rc != 0)) {
2818 clear_bit(ST_CLOSING, &portp->state);
2819 wake_up_interruptible(&portp->raw_wait);
2824 * Check if we are waiting for a command completion message. We may
2825 * need to copy out the command results associated with this command.
2827 if (test_bit(ST_CMDING, &portp->state)) {
2829 if ((cp->cmd == 0) && (rc != 0)) {
2832 if (portp->argp != (void *) NULL) {
2833 memcpy(portp->argp, (void *) &(cp->args[0]),
2835 portp->argp = (void *) NULL;
2839 clear_bit(ST_CMDING, &portp->state);
2840 stli_dodelaycmd(portp, cp);
2841 wake_up_interruptible(&portp->raw_wait);
2846 * Check for any notification messages ready. This includes lots of
2847 * different types of events - RX chars ready, RX break received,
2848 * TX data low or empty in the slave, modem signals changed state.
2857 if (nt.signal & SG_DCD) {
2858 oldsigs = portp->sigs;
2859 portp->sigs = stli_mktiocm(nt.sigvalue);
2860 clear_bit(ST_GETSIGS, &portp->state);
2861 if ((portp->sigs & TIOCM_CD) &&
2862 ((oldsigs & TIOCM_CD) == 0))
2863 wake_up_interruptible(&portp->open_wait);
2864 if ((oldsigs & TIOCM_CD) &&
2865 ((portp->sigs & TIOCM_CD) == 0)) {
2866 if (portp->flags & ASYNC_CHECK_CD) {
2868 schedule_work(&portp->tqhangup);
2873 if (nt.data & DT_TXEMPTY)
2874 clear_bit(ST_TXBUSY, &portp->state);
2875 if (nt.data & (DT_TXEMPTY | DT_TXLOW)) {
2876 if (tty != (struct tty_struct *) NULL) {
2877 if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
2878 tty->ldisc.write_wakeup) {
2879 (tty->ldisc.write_wakeup)(tty);
2882 wake_up_interruptible(&tty->write_wait);
2886 if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) {
2887 if (tty != (struct tty_struct *) NULL) {
2888 tty_insert_flip_char(tty, 0, TTY_BREAK);
2889 if (portp->flags & ASYNC_SAK) {
2893 tty_schedule_flip(tty);
2897 if (nt.data & DT_RXBUSY) {
2899 stli_read(brdp, portp);
2904 * It might seem odd that we are checking for more RX chars here.
2905 * But, we need to handle the case where the tty buffer was previously
2906 * filled, but we had more characters to pass up. The slave will not
2907 * send any more RX notify messages until the RX buffer has been emptied.
2908 * But it will leave the service bits on (since the buffer is not empty).
2909 * So from here we can try to process more RX chars.
2911 if ((!donerx) && test_bit(ST_RXING, &portp->state)) {
2912 clear_bit(ST_RXING, &portp->state);
2913 stli_read(brdp, portp);
2916 return((test_bit(ST_OPENING, &portp->state) ||
2917 test_bit(ST_CLOSING, &portp->state) ||
2918 test_bit(ST_CMDING, &portp->state) ||
2919 test_bit(ST_TXBUSY, &portp->state) ||
2920 test_bit(ST_RXING, &portp->state)) ? 0 : 1);
2923 /*****************************************************************************/
2926 * Service all ports on a particular board. Assumes that the boards
2927 * shared memory is enabled, and that the page pointer is pointed
2928 * at the cdk header structure.
2931 static void stli_brdpoll(stlibrd_t *brdp, volatile cdkhdr_t *hdrp)
2934 unsigned char hostbits[(STL_MAXCHANS / 8) + 1];
2935 unsigned char slavebits[(STL_MAXCHANS / 8) + 1];
2936 unsigned char *slavep;
2937 int bitpos, bitat, bitsize;
2938 int channr, nrdevs, slavebitchange;
2940 bitsize = brdp->bitsize;
2941 nrdevs = brdp->nrdevs;
2944 * Check if slave wants any service. Basically we try to do as
2945 * little work as possible here. There are 2 levels of service
2946 * bits. So if there is nothing to do we bail early. We check
2947 * 8 service bits at a time in the inner loop, so we can bypass
2948 * the lot if none of them want service.
2950 memcpy(&hostbits[0], (((unsigned char *) hdrp) + brdp->hostoffset),
2953 memset(&slavebits[0], 0, bitsize);
2956 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2957 if (hostbits[bitpos] == 0)
2959 channr = bitpos * 8;
2960 for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) {
2961 if (hostbits[bitpos] & bitat) {
2962 portp = brdp->ports[(channr - 1)];
2963 if (stli_hostcmd(brdp, portp)) {
2965 slavebits[bitpos] |= bitat;
2972 * If any of the ports are no longer busy then update them in the
2973 * slave request bits. We need to do this after, since a host port
2974 * service may initiate more slave requests.
2976 if (slavebitchange) {
2977 hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2978 slavep = ((unsigned char *) hdrp) + brdp->slaveoffset;
2979 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2980 if (slavebits[bitpos])
2981 slavep[bitpos] &= ~slavebits[bitpos];
2986 /*****************************************************************************/
2989 * Driver poll routine. This routine polls the boards in use and passes
2990 * messages back up to host when necessary. This is actually very
2991 * CPU efficient, since we will always have the kernel poll clock, it
2992 * adds only a few cycles when idle (since board service can be
2993 * determined very easily), but when loaded generates no interrupts
2994 * (with their expensive associated context change).
2997 static void stli_poll(unsigned long arg)
2999 volatile cdkhdr_t *hdrp;
3003 stli_timerlist.expires = STLI_TIMEOUT;
3004 add_timer(&stli_timerlist);
3007 * Check each board and do any servicing required.
3009 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
3010 brdp = stli_brds[brdnr];
3011 if (brdp == (stlibrd_t *) NULL)
3013 if ((brdp->state & BST_STARTED) == 0)
3017 hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
3019 stli_brdpoll(brdp, hdrp);
3024 /*****************************************************************************/
3027 * Translate the termios settings into the port setting structure of
3031 static void stli_mkasyport(stliport_t *portp, asyport_t *pp, struct termios *tiosp)
3034 printk(KERN_DEBUG "stli_mkasyport(portp=%x,pp=%x,tiosp=%d)\n",
3035 (int) portp, (int) pp, (int) tiosp);
3038 memset(pp, 0, sizeof(asyport_t));
3041 * Start of by setting the baud, char size, parity and stop bit info.
3043 pp->baudout = tiosp->c_cflag & CBAUD;
3044 if (pp->baudout & CBAUDEX) {
3045 pp->baudout &= ~CBAUDEX;
3046 if ((pp->baudout < 1) || (pp->baudout > 4))
3047 tiosp->c_cflag &= ~CBAUDEX;
3051 pp->baudout = stli_baudrates[pp->baudout];
3052 if ((tiosp->c_cflag & CBAUD) == B38400) {
3053 if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
3054 pp->baudout = 57600;
3055 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
3056 pp->baudout = 115200;
3057 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
3058 pp->baudout = 230400;
3059 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
3060 pp->baudout = 460800;
3061 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)
3062 pp->baudout = (portp->baud_base / portp->custom_divisor);
3064 if (pp->baudout > STL_MAXBAUD)
3065 pp->baudout = STL_MAXBAUD;
3066 pp->baudin = pp->baudout;
3068 switch (tiosp->c_cflag & CSIZE) {
3083 if (tiosp->c_cflag & CSTOPB)
3084 pp->stopbs = PT_STOP2;
3086 pp->stopbs = PT_STOP1;
3088 if (tiosp->c_cflag & PARENB) {
3089 if (tiosp->c_cflag & PARODD)
3090 pp->parity = PT_ODDPARITY;
3092 pp->parity = PT_EVENPARITY;
3094 pp->parity = PT_NOPARITY;
3098 * Set up any flow control options enabled.
3100 if (tiosp->c_iflag & IXON) {
3102 if (tiosp->c_iflag & IXANY)
3103 pp->flow |= F_IXANY;
3105 if (tiosp->c_cflag & CRTSCTS)
3106 pp->flow |= (F_RTSFLOW | F_CTSFLOW);
3108 pp->startin = tiosp->c_cc[VSTART];
3109 pp->stopin = tiosp->c_cc[VSTOP];
3110 pp->startout = tiosp->c_cc[VSTART];
3111 pp->stopout = tiosp->c_cc[VSTOP];
3114 * Set up the RX char marking mask with those RX error types we must
3115 * catch. We can get the slave to help us out a little here, it will
3116 * ignore parity errors and breaks for us, and mark parity errors in
3119 if (tiosp->c_iflag & IGNPAR)
3120 pp->iflag |= FI_IGNRXERRS;
3121 if (tiosp->c_iflag & IGNBRK)
3122 pp->iflag |= FI_IGNBREAK;
3124 portp->rxmarkmsk = 0;
3125 if (tiosp->c_iflag & (INPCK | PARMRK))
3126 pp->iflag |= FI_1MARKRXERRS;
3127 if (tiosp->c_iflag & BRKINT)
3128 portp->rxmarkmsk |= BRKINT;
3131 * Set up clocal processing as required.
3133 if (tiosp->c_cflag & CLOCAL)
3134 portp->flags &= ~ASYNC_CHECK_CD;
3136 portp->flags |= ASYNC_CHECK_CD;
3139 * Transfer any persistent flags into the asyport structure.
3141 pp->pflag = (portp->pflag & 0xffff);
3142 pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0;
3143 pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0;
3144 pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0;
3147 /*****************************************************************************/
3150 * Construct a slave signals structure for setting the DTR and RTS
3151 * signals as specified.
3154 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts)
3157 printk(KERN_DEBUG "stli_mkasysigs(sp=%x,dtr=%d,rts=%d)\n",
3158 (int) sp, dtr, rts);
3161 memset(sp, 0, sizeof(asysigs_t));
3163 sp->signal |= SG_DTR;
3164 sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0);
3167 sp->signal |= SG_RTS;
3168 sp->sigvalue |= ((rts > 0) ? SG_RTS : 0);
3172 /*****************************************************************************/
3175 * Convert the signals returned from the slave into a local TIOCM type
3176 * signals value. We keep them locally in TIOCM format.
3179 static long stli_mktiocm(unsigned long sigvalue)
3184 printk(KERN_DEBUG "stli_mktiocm(sigvalue=%x)\n", (int) sigvalue);
3188 tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0);
3189 tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0);
3190 tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0);
3191 tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0);
3192 tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0);
3193 tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0);
3197 /*****************************************************************************/
3200 * All panels and ports actually attached have been worked out. All
3201 * we need to do here is set up the appropriate per port data structures.
3204 static int stli_initports(stlibrd_t *brdp)
3207 int i, panelnr, panelport;
3210 printk(KERN_DEBUG "stli_initports(brdp=%x)\n", (int) brdp);
3213 for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) {
3214 portp = kzalloc(sizeof(stliport_t), GFP_KERNEL);
3216 printk("STALLION: failed to allocate port structure\n");
3220 portp->magic = STLI_PORTMAGIC;
3222 portp->brdnr = brdp->brdnr;
3223 portp->panelnr = panelnr;
3224 portp->baud_base = STL_BAUDBASE;
3225 portp->close_delay = STL_CLOSEDELAY;
3226 portp->closing_wait = 30 * HZ;
3227 INIT_WORK(&portp->tqhangup, stli_dohangup, portp);
3228 init_waitqueue_head(&portp->open_wait);
3229 init_waitqueue_head(&portp->close_wait);
3230 init_waitqueue_head(&portp->raw_wait);
3232 if (panelport >= brdp->panels[panelnr]) {
3236 brdp->ports[i] = portp;
3242 /*****************************************************************************/
3245 * All the following routines are board specific hardware operations.
3248 static void stli_ecpinit(stlibrd_t *brdp)
3250 unsigned long memconf;
3253 printk(KERN_DEBUG "stli_ecpinit(brdp=%d)\n", (int) brdp);
3256 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
3258 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
3261 memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT;
3262 outb(memconf, (brdp->iobase + ECP_ATMEMAR));
3265 /*****************************************************************************/
3267 static void stli_ecpenable(stlibrd_t *brdp)
3270 printk(KERN_DEBUG "stli_ecpenable(brdp=%x)\n", (int) brdp);
3272 outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR));
3275 /*****************************************************************************/
3277 static void stli_ecpdisable(stlibrd_t *brdp)
3280 printk(KERN_DEBUG "stli_ecpdisable(brdp=%x)\n", (int) brdp);
3282 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
3285 /*****************************************************************************/
3287 static char *stli_ecpgetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3293 printk(KERN_DEBUG "stli_ecpgetmemptr(brdp=%x,offset=%x)\n", (int) brdp,
3297 if (offset > brdp->memsize) {
3298 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3299 "range at line=%d(%d), brd=%d\n",
3300 (int) offset, line, __LINE__, brdp->brdnr);
3304 ptr = brdp->membase + (offset % ECP_ATPAGESIZE);
3305 val = (unsigned char) (offset / ECP_ATPAGESIZE);
3307 outb(val, (brdp->iobase + ECP_ATMEMPR));
3311 /*****************************************************************************/
3313 static void stli_ecpreset(stlibrd_t *brdp)
3316 printk(KERN_DEBUG "stli_ecpreset(brdp=%x)\n", (int) brdp);
3319 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
3321 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
3325 /*****************************************************************************/
3327 static void stli_ecpintr(stlibrd_t *brdp)
3330 printk(KERN_DEBUG "stli_ecpintr(brdp=%x)\n", (int) brdp);
3332 outb(0x1, brdp->iobase);
3335 /*****************************************************************************/
3338 * The following set of functions act on ECP EISA boards.
3341 static void stli_ecpeiinit(stlibrd_t *brdp)
3343 unsigned long memconf;
3346 printk(KERN_DEBUG "stli_ecpeiinit(brdp=%x)\n", (int) brdp);
3349 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
3350 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
3352 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3355 memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL;
3356 outb(memconf, (brdp->iobase + ECP_EIMEMARL));
3357 memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH;
3358 outb(memconf, (brdp->iobase + ECP_EIMEMARH));
3361 /*****************************************************************************/
3363 static void stli_ecpeienable(stlibrd_t *brdp)
3365 outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR));
3368 /*****************************************************************************/
3370 static void stli_ecpeidisable(stlibrd_t *brdp)
3372 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3375 /*****************************************************************************/
3377 static char *stli_ecpeigetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3383 printk(KERN_DEBUG "stli_ecpeigetmemptr(brdp=%x,offset=%x,line=%d)\n",
3384 (int) brdp, (int) offset, line);
3387 if (offset > brdp->memsize) {
3388 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3389 "range at line=%d(%d), brd=%d\n",
3390 (int) offset, line, __LINE__, brdp->brdnr);
3394 ptr = brdp->membase + (offset % ECP_EIPAGESIZE);
3395 if (offset < ECP_EIPAGESIZE)
3398 val = ECP_EIENABLE | 0x40;
3400 outb(val, (brdp->iobase + ECP_EICONFR));
3404 /*****************************************************************************/
3406 static void stli_ecpeireset(stlibrd_t *brdp)
3408 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
3410 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3414 /*****************************************************************************/
3417 * The following set of functions act on ECP MCA boards.
3420 static void stli_ecpmcenable(stlibrd_t *brdp)
3422 outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR));
3425 /*****************************************************************************/
3427 static void stli_ecpmcdisable(stlibrd_t *brdp)
3429 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
3432 /*****************************************************************************/
3434 static char *stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3439 if (offset > brdp->memsize) {
3440 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3441 "range at line=%d(%d), brd=%d\n",
3442 (int) offset, line, __LINE__, brdp->brdnr);
3446 ptr = brdp->membase + (offset % ECP_MCPAGESIZE);
3447 val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE;
3449 outb(val, (brdp->iobase + ECP_MCCONFR));
3453 /*****************************************************************************/
3455 static void stli_ecpmcreset(stlibrd_t *brdp)
3457 outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR));
3459 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
3463 /*****************************************************************************/
3466 * The following set of functions act on ECP PCI boards.
3469 static void stli_ecppciinit(stlibrd_t *brdp)
3472 printk(KERN_DEBUG "stli_ecppciinit(brdp=%x)\n", (int) brdp);
3475 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
3477 outb(0, (brdp->iobase + ECP_PCICONFR));
3481 /*****************************************************************************/
3483 static char *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3489 printk(KERN_DEBUG "stli_ecppcigetmemptr(brdp=%x,offset=%x,line=%d)\n",
3490 (int) brdp, (int) offset, line);
3493 if (offset > brdp->memsize) {
3494 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3495 "range at line=%d(%d), board=%d\n",
3496 (int) offset, line, __LINE__, brdp->brdnr);
3500 ptr = brdp->membase + (offset % ECP_PCIPAGESIZE);
3501 val = (offset / ECP_PCIPAGESIZE) << 1;
3503 outb(val, (brdp->iobase + ECP_PCICONFR));
3507 /*****************************************************************************/
3509 static void stli_ecppcireset(stlibrd_t *brdp)
3511 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
3513 outb(0, (brdp->iobase + ECP_PCICONFR));
3517 /*****************************************************************************/
3520 * The following routines act on ONboards.
3523 static void stli_onbinit(stlibrd_t *brdp)
3525 unsigned long memconf;
3528 printk(KERN_DEBUG "stli_onbinit(brdp=%d)\n", (int) brdp);
3531 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
3533 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
3536 memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT;
3537 outb(memconf, (brdp->iobase + ONB_ATMEMAR));
3538 outb(0x1, brdp->iobase);
3542 /*****************************************************************************/
3544 static void stli_onbenable(stlibrd_t *brdp)
3547 printk(KERN_DEBUG "stli_onbenable(brdp=%x)\n", (int) brdp);
3549 outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR));
3552 /*****************************************************************************/
3554 static void stli_onbdisable(stlibrd_t *brdp)
3557 printk(KERN_DEBUG "stli_onbdisable(brdp=%x)\n", (int) brdp);
3559 outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR));
3562 /*****************************************************************************/
3564 static char *stli_onbgetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3569 printk(KERN_DEBUG "stli_onbgetmemptr(brdp=%x,offset=%x)\n", (int) brdp,
3573 if (offset > brdp->memsize) {
3574 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3575 "range at line=%d(%d), brd=%d\n",
3576 (int) offset, line, __LINE__, brdp->brdnr);
3579 ptr = brdp->membase + (offset % ONB_ATPAGESIZE);
3584 /*****************************************************************************/
3586 static void stli_onbreset(stlibrd_t *brdp)
3590 printk(KERN_DEBUG "stli_onbreset(brdp=%x)\n", (int) brdp);
3593 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
3595 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
3599 /*****************************************************************************/
3602 * The following routines act on ONboard EISA.
3605 static void stli_onbeinit(stlibrd_t *brdp)
3607 unsigned long memconf;
3610 printk(KERN_DEBUG "stli_onbeinit(brdp=%d)\n", (int) brdp);
3613 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
3614 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3616 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3619 memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL;
3620 outb(memconf, (brdp->iobase + ONB_EIMEMARL));
3621 memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH;
3622 outb(memconf, (brdp->iobase + ONB_EIMEMARH));
3623 outb(0x1, brdp->iobase);
3627 /*****************************************************************************/
3629 static void stli_onbeenable(stlibrd_t *brdp)
3632 printk(KERN_DEBUG "stli_onbeenable(brdp=%x)\n", (int) brdp);
3634 outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR));
3637 /*****************************************************************************/
3639 static void stli_onbedisable(stlibrd_t *brdp)
3642 printk(KERN_DEBUG "stli_onbedisable(brdp=%x)\n", (int) brdp);
3644 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3647 /*****************************************************************************/
3649 static char *stli_onbegetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3655 printk(KERN_DEBUG "stli_onbegetmemptr(brdp=%x,offset=%x,line=%d)\n",
3656 (int) brdp, (int) offset, line);
3659 if (offset > brdp->memsize) {
3660 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3661 "range at line=%d(%d), brd=%d\n",
3662 (int) offset, line, __LINE__, brdp->brdnr);
3666 ptr = brdp->membase + (offset % ONB_EIPAGESIZE);
3667 if (offset < ONB_EIPAGESIZE)
3670 val = ONB_EIENABLE | 0x40;
3672 outb(val, (brdp->iobase + ONB_EICONFR));
3676 /*****************************************************************************/
3678 static void stli_onbereset(stlibrd_t *brdp)
3682 printk(KERN_ERR "stli_onbereset(brdp=%x)\n", (int) brdp);
3685 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3687 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3691 /*****************************************************************************/
3694 * The following routines act on Brumby boards.
3697 static void stli_bbyinit(stlibrd_t *brdp)
3701 printk(KERN_ERR "stli_bbyinit(brdp=%d)\n", (int) brdp);
3704 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
3706 outb(0, (brdp->iobase + BBY_ATCONFR));
3708 outb(0x1, brdp->iobase);
3712 /*****************************************************************************/
3714 static char *stli_bbygetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3720 printk(KERN_ERR "stli_bbygetmemptr(brdp=%x,offset=%x)\n", (int) brdp,
3724 if (offset > brdp->memsize) {
3725 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3726 "range at line=%d(%d), brd=%d\n",
3727 (int) offset, line, __LINE__, brdp->brdnr);
3731 ptr = brdp->membase + (offset % BBY_PAGESIZE);
3732 val = (unsigned char) (offset / BBY_PAGESIZE);
3734 outb(val, (brdp->iobase + BBY_ATCONFR));
3738 /*****************************************************************************/
3740 static void stli_bbyreset(stlibrd_t *brdp)
3744 printk(KERN_DEBUG "stli_bbyreset(brdp=%x)\n", (int) brdp);
3747 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
3749 outb(0, (brdp->iobase + BBY_ATCONFR));
3753 /*****************************************************************************/
3756 * The following routines act on original old Stallion boards.
3759 static void stli_stalinit(stlibrd_t *brdp)
3763 printk(KERN_DEBUG "stli_stalinit(brdp=%d)\n", (int) brdp);
3766 outb(0x1, brdp->iobase);
3770 /*****************************************************************************/
3772 static char *stli_stalgetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3777 printk(KERN_DEBUG "stli_stalgetmemptr(brdp=%x,offset=%x)\n", (int) brdp,
3781 if (offset > brdp->memsize) {
3782 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3783 "range at line=%d(%d), brd=%d\n",
3784 (int) offset, line, __LINE__, brdp->brdnr);
3787 ptr = brdp->membase + (offset % STAL_PAGESIZE);
3792 /*****************************************************************************/
3794 static void stli_stalreset(stlibrd_t *brdp)
3796 volatile unsigned long *vecp;
3799 printk(KERN_DEBUG "stli_stalreset(brdp=%x)\n", (int) brdp);
3802 vecp = (volatile unsigned long *) (brdp->membase + 0x30);
3804 outb(0, brdp->iobase);
3808 /*****************************************************************************/
3811 * Try to find an ECP board and initialize it. This handles only ECP
3815 static int stli_initecp(stlibrd_t *brdp)
3819 unsigned int status, nxtid;
3821 int panelnr, nrports;
3824 printk(KERN_DEBUG "stli_initecp(brdp=%x)\n", (int) brdp);
3827 if (!request_region(brdp->iobase, brdp->iosize, "istallion"))
3830 if ((brdp->iobase == 0) || (brdp->memaddr == 0))
3832 release_region(brdp->iobase, brdp->iosize);
3836 brdp->iosize = ECP_IOSIZE;
3839 * Based on the specific board type setup the common vars to access
3840 * and enable shared memory. Set all board specific information now
3843 switch (brdp->brdtype) {
3845 brdp->membase = (void *) brdp->memaddr;
3846 brdp->memsize = ECP_MEMSIZE;
3847 brdp->pagesize = ECP_ATPAGESIZE;
3848 brdp->init = stli_ecpinit;
3849 brdp->enable = stli_ecpenable;
3850 brdp->reenable = stli_ecpenable;
3851 brdp->disable = stli_ecpdisable;
3852 brdp->getmemptr = stli_ecpgetmemptr;
3853 brdp->intr = stli_ecpintr;
3854 brdp->reset = stli_ecpreset;
3855 name = "serial(EC8/64)";
3859 brdp->membase = (void *) brdp->memaddr;
3860 brdp->memsize = ECP_MEMSIZE;
3861 brdp->pagesize = ECP_EIPAGESIZE;
3862 brdp->init = stli_ecpeiinit;
3863 brdp->enable = stli_ecpeienable;
3864 brdp->reenable = stli_ecpeienable;
3865 brdp->disable = stli_ecpeidisable;
3866 brdp->getmemptr = stli_ecpeigetmemptr;
3867 brdp->intr = stli_ecpintr;
3868 brdp->reset = stli_ecpeireset;
3869 name = "serial(EC8/64-EI)";
3873 brdp->membase = (void *) brdp->memaddr;
3874 brdp->memsize = ECP_MEMSIZE;
3875 brdp->pagesize = ECP_MCPAGESIZE;
3877 brdp->enable = stli_ecpmcenable;
3878 brdp->reenable = stli_ecpmcenable;
3879 brdp->disable = stli_ecpmcdisable;
3880 brdp->getmemptr = stli_ecpmcgetmemptr;
3881 brdp->intr = stli_ecpintr;
3882 brdp->reset = stli_ecpmcreset;
3883 name = "serial(EC8/64-MCA)";
3887 brdp->membase = (void *) brdp->memaddr;
3888 brdp->memsize = ECP_PCIMEMSIZE;
3889 brdp->pagesize = ECP_PCIPAGESIZE;
3890 brdp->init = stli_ecppciinit;
3891 brdp->enable = NULL;
3892 brdp->reenable = NULL;
3893 brdp->disable = NULL;
3894 brdp->getmemptr = stli_ecppcigetmemptr;
3895 brdp->intr = stli_ecpintr;
3896 brdp->reset = stli_ecppcireset;
3897 name = "serial(EC/RA-PCI)";
3901 release_region(brdp->iobase, brdp->iosize);
3906 * The per-board operations structure is all set up, so now let's go
3907 * and get the board operational. Firstly initialize board configuration
3908 * registers. Set the memory mapping info so we can get at the boards
3913 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
3914 if (brdp->membase == (void *) NULL)
3916 release_region(brdp->iobase, brdp->iosize);
3921 * Now that all specific code is set up, enable the shared memory and
3922 * look for the a signature area that will tell us exactly what board
3923 * this is, and what it is connected to it.
3926 sigsp = (cdkecpsig_t *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3927 memcpy(&sig, sigsp, sizeof(cdkecpsig_t));
3931 printk("%s(%d): sig-> magic=%x rom=%x panel=%x,%x,%x,%x,%x,%x,%x,%x\n",
3932 __FILE__, __LINE__, (int) sig.magic, sig.romver, sig.panelid[0],
3933 (int) sig.panelid[1], (int) sig.panelid[2],
3934 (int) sig.panelid[3], (int) sig.panelid[4],
3935 (int) sig.panelid[5], (int) sig.panelid[6],
3936 (int) sig.panelid[7]);
3939 if (sig.magic != ECP_MAGIC)
3941 release_region(brdp->iobase, brdp->iosize);
3946 * Scan through the signature looking at the panels connected to the
3947 * board. Calculate the total number of ports as we go.
3949 for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) {
3950 status = sig.panelid[nxtid];
3951 if ((status & ECH_PNLIDMASK) != nxtid)
3954 brdp->panelids[panelnr] = status;
3955 nrports = (status & ECH_PNL16PORT) ? 16 : 8;
3956 if ((nrports == 16) && ((status & ECH_PNLXPID) == 0))
3958 brdp->panels[panelnr] = nrports;
3959 brdp->nrports += nrports;
3965 brdp->state |= BST_FOUND;
3969 /*****************************************************************************/
3972 * Try to find an ONboard, Brumby or Stallion board and initialize it.
3973 * This handles only these board types.
3976 static int stli_initonb(stlibrd_t *brdp)
3984 printk(KERN_DEBUG "stli_initonb(brdp=%x)\n", (int) brdp);
3988 * Do a basic sanity check on the IO and memory addresses.
3990 if ((brdp->iobase == 0) || (brdp->memaddr == 0))
3993 brdp->iosize = ONB_IOSIZE;
3995 if (!request_region(brdp->iobase, brdp->iosize, "istallion"))
3999 * Based on the specific board type setup the common vars to access
4000 * and enable shared memory. Set all board specific information now
4003 switch (brdp->brdtype) {
4007 case BRD_ONBOARD2_32:
4009 brdp->membase = (void *) brdp->memaddr;
4010 brdp->memsize = ONB_MEMSIZE;
4011 brdp->pagesize = ONB_ATPAGESIZE;
4012 brdp->init = stli_onbinit;
4013 brdp->enable = stli_onbenable;
4014 brdp->reenable = stli_onbenable;
4015 brdp->disable = stli_onbdisable;
4016 brdp->getmemptr = stli_onbgetmemptr;
4017 brdp->intr = stli_ecpintr;
4018 brdp->reset = stli_onbreset;
4019 if (brdp->memaddr > 0x100000)
4020 brdp->enabval = ONB_MEMENABHI;
4022 brdp->enabval = ONB_MEMENABLO;
4023 name = "serial(ONBoard)";
4027 brdp->membase = (void *) brdp->memaddr;
4028 brdp->memsize = ONB_EIMEMSIZE;
4029 brdp->pagesize = ONB_EIPAGESIZE;
4030 brdp->init = stli_onbeinit;
4031 brdp->enable = stli_onbeenable;
4032 brdp->reenable = stli_onbeenable;
4033 brdp->disable = stli_onbedisable;
4034 brdp->getmemptr = stli_onbegetmemptr;
4035 brdp->intr = stli_ecpintr;
4036 brdp->reset = stli_onbereset;
4037 name = "serial(ONBoard/E)";
4043 brdp->membase = (void *) brdp->memaddr;
4044 brdp->memsize = BBY_MEMSIZE;
4045 brdp->pagesize = BBY_PAGESIZE;
4046 brdp->init = stli_bbyinit;
4047 brdp->enable = NULL;
4048 brdp->reenable = NULL;
4049 brdp->disable = NULL;
4050 brdp->getmemptr = stli_bbygetmemptr;
4051 brdp->intr = stli_ecpintr;
4052 brdp->reset = stli_bbyreset;
4053 name = "serial(Brumby)";
4057 brdp->membase = (void *) brdp->memaddr;
4058 brdp->memsize = STAL_MEMSIZE;
4059 brdp->pagesize = STAL_PAGESIZE;
4060 brdp->init = stli_stalinit;
4061 brdp->enable = NULL;
4062 brdp->reenable = NULL;
4063 brdp->disable = NULL;
4064 brdp->getmemptr = stli_stalgetmemptr;
4065 brdp->intr = stli_ecpintr;
4066 brdp->reset = stli_stalreset;
4067 name = "serial(Stallion)";
4071 release_region(brdp->iobase, brdp->iosize);
4076 * The per-board operations structure is all set up, so now let's go
4077 * and get the board operational. Firstly initialize board configuration
4078 * registers. Set the memory mapping info so we can get at the boards
4083 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
4084 if (brdp->membase == (void *) NULL)
4086 release_region(brdp->iobase, brdp->iosize);
4091 * Now that all specific code is set up, enable the shared memory and
4092 * look for the a signature area that will tell us exactly what board
4093 * this is, and how many ports.
4096 sigsp = (cdkonbsig_t *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
4097 memcpy(&sig, sigsp, sizeof(cdkonbsig_t));
4101 printk("%s(%d): sig-> magic=%x:%x:%x:%x romver=%x amask=%x:%x:%x\n",
4102 __FILE__, __LINE__, sig.magic0, sig.magic1, sig.magic2,
4103 sig.magic3, sig.romver, sig.amask0, sig.amask1, sig.amask2);
4106 if ((sig.magic0 != ONB_MAGIC0) || (sig.magic1 != ONB_MAGIC1) ||
4107 (sig.magic2 != ONB_MAGIC2) || (sig.magic3 != ONB_MAGIC3))
4109 release_region(brdp->iobase, brdp->iosize);
4114 * Scan through the signature alive mask and calculate how many ports
4115 * there are on this board.
4121 for (i = 0; (i < 16); i++) {
4122 if (((sig.amask0 << i) & 0x8000) == 0)
4127 brdp->panels[0] = brdp->nrports;
4130 brdp->state |= BST_FOUND;
4134 /*****************************************************************************/
4137 * Start up a running board. This routine is only called after the
4138 * code has been down loaded to the board and is operational. It will
4139 * read in the memory map, and get the show on the road...
4142 static int stli_startbrd(stlibrd_t *brdp)
4144 volatile cdkhdr_t *hdrp;
4145 volatile cdkmem_t *memp;
4146 volatile cdkasy_t *ap;
4147 unsigned long flags;
4149 int portnr, nrdevs, i, rc;
4152 printk(KERN_DEBUG "stli_startbrd(brdp=%x)\n", (int) brdp);
4160 hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
4161 nrdevs = hdrp->nrdevs;
4164 printk("%s(%d): CDK version %d.%d.%d --> "
4165 "nrdevs=%d memp=%x hostp=%x slavep=%x\n",
4166 __FILE__, __LINE__, hdrp->ver_release, hdrp->ver_modification,
4167 hdrp->ver_fix, nrdevs, (int) hdrp->memp, (int) hdrp->hostp,
4168 (int) hdrp->slavep);
4171 if (nrdevs < (brdp->nrports + 1)) {
4172 printk(KERN_ERR "STALLION: slave failed to allocate memory for "
4173 "all devices, devices=%d\n", nrdevs);
4174 brdp->nrports = nrdevs - 1;
4176 brdp->nrdevs = nrdevs;
4177 brdp->hostoffset = hdrp->hostp - CDK_CDKADDR;
4178 brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR;
4179 brdp->bitsize = (nrdevs + 7) / 8;
4180 memp = (volatile cdkmem_t *) hdrp->memp;
4181 if (((unsigned long) memp) > brdp->memsize) {
4182 printk(KERN_ERR "STALLION: corrupted shared memory region?\n");
4184 goto stli_donestartup;
4186 memp = (volatile cdkmem_t *) EBRDGETMEMPTR(brdp, (unsigned long) memp);
4187 if (memp->dtype != TYP_ASYNCTRL) {
4188 printk(KERN_ERR "STALLION: no slave control device found\n");
4189 goto stli_donestartup;
4194 * Cycle through memory allocation of each port. We are guaranteed to
4195 * have all ports inside the first page of slave window, so no need to
4196 * change pages while reading memory map.
4198 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) {
4199 if (memp->dtype != TYP_ASYNC)
4201 portp = brdp->ports[portnr];
4202 if (portp == (stliport_t *) NULL)
4205 portp->addr = memp->offset;
4206 portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs));
4207 portp->portidx = (unsigned char) (i / 8);
4208 portp->portbit = (unsigned char) (0x1 << (i % 8));
4211 hdrp->slavereq = 0xff;
4214 * For each port setup a local copy of the RX and TX buffer offsets
4215 * and sizes. We do this separate from the above, because we need to
4216 * move the shared memory page...
4218 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) {
4219 portp = brdp->ports[portnr];
4220 if (portp == (stliport_t *) NULL)
4222 if (portp->addr == 0)
4224 ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr);
4225 if (ap != (volatile cdkasy_t *) NULL) {
4226 portp->rxsize = ap->rxq.size;
4227 portp->txsize = ap->txq.size;
4228 portp->rxoffset = ap->rxq.offset;
4229 portp->txoffset = ap->txq.offset;
4235 restore_flags(flags);
4238 brdp->state |= BST_STARTED;
4240 if (! stli_timeron) {
4242 stli_timerlist.expires = STLI_TIMEOUT;
4243 add_timer(&stli_timerlist);
4249 /*****************************************************************************/
4252 * Probe and initialize the specified board.
4255 static int __init stli_brdinit(stlibrd_t *brdp)
4258 printk(KERN_DEBUG "stli_brdinit(brdp=%x)\n", (int) brdp);
4261 stli_brds[brdp->brdnr] = brdp;
4263 switch (brdp->brdtype) {
4274 case BRD_ONBOARD2_32:
4286 printk(KERN_ERR "STALLION: %s board type not supported in "
4287 "this driver\n", stli_brdnames[brdp->brdtype]);
4290 printk(KERN_ERR "STALLION: board=%d is unknown board "
4291 "type=%d\n", brdp->brdnr, brdp->brdtype);
4295 if ((brdp->state & BST_FOUND) == 0) {
4296 printk(KERN_ERR "STALLION: %s board not found, board=%d "
4298 stli_brdnames[brdp->brdtype], brdp->brdnr,
4299 brdp->iobase, (int) brdp->memaddr);
4303 stli_initports(brdp);
4304 printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x "
4305 "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype],
4306 brdp->brdnr, brdp->iobase, (int) brdp->memaddr,
4307 brdp->nrpanels, brdp->nrports);
4311 /*****************************************************************************/
4314 * Probe around trying to find where the EISA boards shared memory
4315 * might be. This is a bit if hack, but it is the best we can do.
4318 static int stli_eisamemprobe(stlibrd_t *brdp)
4320 cdkecpsig_t ecpsig, *ecpsigp;
4321 cdkonbsig_t onbsig, *onbsigp;
4325 printk(KERN_DEBUG "stli_eisamemprobe(brdp=%x)\n", (int) brdp);
4329 * First up we reset the board, to get it into a known state. There
4330 * is only 2 board types here we need to worry about. Don;t use the
4331 * standard board init routine here, it programs up the shared
4332 * memory address, and we don't know it yet...
4334 if (brdp->brdtype == BRD_ECPE) {
4335 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
4336 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
4338 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
4340 stli_ecpeienable(brdp);
4341 } else if (brdp->brdtype == BRD_ONBOARDE) {
4342 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
4343 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
4345 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
4347 outb(0x1, brdp->iobase);
4349 stli_onbeenable(brdp);
4355 brdp->memsize = ECP_MEMSIZE;
4358 * Board shared memory is enabled, so now we have a poke around and
4359 * see if we can find it.
4361 for (i = 0; (i < stli_eisamempsize); i++) {
4362 brdp->memaddr = stli_eisamemprobeaddrs[i];
4363 brdp->membase = (void *) brdp->memaddr;
4364 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
4365 if (brdp->membase == (void *) NULL)
4368 if (brdp->brdtype == BRD_ECPE) {
4369 ecpsigp = (cdkecpsig_t *) stli_ecpeigetmemptr(brdp,
4370 CDK_SIGADDR, __LINE__);
4371 memcpy(&ecpsig, ecpsigp, sizeof(cdkecpsig_t));
4372 if (ecpsig.magic == ECP_MAGIC)
4375 onbsigp = (cdkonbsig_t *) stli_onbegetmemptr(brdp,
4376 CDK_SIGADDR, __LINE__);
4377 memcpy(&onbsig, onbsigp, sizeof(cdkonbsig_t));
4378 if ((onbsig.magic0 == ONB_MAGIC0) &&
4379 (onbsig.magic1 == ONB_MAGIC1) &&
4380 (onbsig.magic2 == ONB_MAGIC2) &&
4381 (onbsig.magic3 == ONB_MAGIC3))
4385 iounmap(brdp->membase);
4391 * Regardless of whether we found the shared memory or not we must
4392 * disable the region. After that return success or failure.
4394 if (brdp->brdtype == BRD_ECPE)
4395 stli_ecpeidisable(brdp);
4397 stli_onbedisable(brdp);
4401 brdp->membase = NULL;
4402 printk(KERN_ERR "STALLION: failed to probe shared memory "
4403 "region for %s in EISA slot=%d\n",
4404 stli_brdnames[brdp->brdtype], (brdp->iobase >> 12));
4410 static int stli_getbrdnr(void)
4414 for (i = 0; i < STL_MAXBRDS; i++) {
4415 if (!stli_brds[i]) {
4416 if (i >= stli_nrbrds)
4417 stli_nrbrds = i + 1;
4424 /*****************************************************************************/
4427 * Probe around and try to find any EISA boards in system. The biggest
4428 * problem here is finding out what memory address is associated with
4429 * an EISA board after it is found. The registers of the ECPE and
4430 * ONboardE are not readable - so we can't read them from there. We
4431 * don't have access to the EISA CMOS (or EISA BIOS) so we don't
4432 * actually have any way to find out the real value. The best we can
4433 * do is go probing around in the usual places hoping we can find it.
4436 static int stli_findeisabrds(void)
4439 unsigned int iobase, eid;
4443 printk(KERN_DEBUG "stli_findeisabrds()\n");
4447 * Firstly check if this is an EISA system. Do this by probing for
4448 * the system board EISA ID. If this is not an EISA system then
4449 * don't bother going any further!
4452 if (inb(0xc80) == 0xff)
4456 * Looks like an EISA system, so go searching for EISA boards.
4458 for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) {
4459 outb(0xff, (iobase + 0xc80));
4460 eid = inb(iobase + 0xc80);
4461 eid |= inb(iobase + 0xc81) << 8;
4462 if (eid != STL_EISAID)
4466 * We have found a board. Need to check if this board was
4467 * statically configured already (just in case!).
4469 for (i = 0; (i < STL_MAXBRDS); i++) {
4470 brdp = stli_brds[i];
4471 if (brdp == (stlibrd_t *) NULL)
4473 if (brdp->iobase == iobase)
4476 if (i < STL_MAXBRDS)
4480 * We have found a Stallion board and it is not configured already.
4481 * Allocate a board structure and initialize it.
4483 if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL)
4485 if ((brdp->brdnr = stli_getbrdnr()) < 0)
4487 eid = inb(iobase + 0xc82);
4488 if (eid == ECP_EISAID)
4489 brdp->brdtype = BRD_ECPE;
4490 else if (eid == ONB_EISAID)
4491 brdp->brdtype = BRD_ONBOARDE;
4493 brdp->brdtype = BRD_UNKNOWN;
4494 brdp->iobase = iobase;
4495 outb(0x1, (iobase + 0xc84));
4496 if (stli_eisamemprobe(brdp))
4497 outb(0, (iobase + 0xc84));
4504 /*****************************************************************************/
4507 * Find the next available board number that is free.
4510 /*****************************************************************************/
4515 * We have a Stallion board. Allocate a board structure and
4516 * initialize it. Read its IO and MEMORY resources from PCI
4517 * configuration space.
4520 static int stli_initpcibrd(int brdtype, struct pci_dev *devp)
4525 printk(KERN_DEBUG "stli_initpcibrd(brdtype=%d,busnr=%x,devnr=%x)\n",
4526 brdtype, dev->bus->number, dev->devfn);
4529 if (pci_enable_device(devp))
4531 if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL)
4533 if ((brdp->brdnr = stli_getbrdnr()) < 0) {
4534 printk(KERN_INFO "STALLION: too many boards found, "
4535 "maximum supported %d\n", STL_MAXBRDS);
4538 brdp->brdtype = brdtype;
4541 printk(KERN_DEBUG "%s(%d): BAR[]=%lx,%lx,%lx,%lx\n", __FILE__, __LINE__,
4542 pci_resource_start(devp, 0),
4543 pci_resource_start(devp, 1),
4544 pci_resource_start(devp, 2),
4545 pci_resource_start(devp, 3));
4549 * We have all resources from the board, so lets setup the actual
4550 * board structure now.
4552 brdp->iobase = pci_resource_start(devp, 3);
4553 brdp->memaddr = pci_resource_start(devp, 2);
4559 /*****************************************************************************/
4562 * Find all Stallion PCI boards that might be installed. Initialize each
4563 * one as it is found.
4566 static int stli_findpcibrds(void)
4568 struct pci_dev *dev = NULL;
4572 printk("stli_findpcibrds()\n");
4575 while ((dev = pci_find_device(PCI_VENDOR_ID_STALLION,
4576 PCI_DEVICE_ID_ECRA, dev))) {
4577 if ((rc = stli_initpcibrd(BRD_ECPPCI, dev)))
4586 /*****************************************************************************/
4589 * Allocate a new board structure. Fill out the basic info in it.
4592 static stlibrd_t *stli_allocbrd(void)
4596 brdp = kzalloc(sizeof(stlibrd_t), GFP_KERNEL);
4598 printk(KERN_ERR "STALLION: failed to allocate memory "
4599 "(size=%d)\n", sizeof(stlibrd_t));
4603 brdp->magic = STLI_BOARDMAGIC;
4607 /*****************************************************************************/
4610 * Scan through all the boards in the configuration and see what we
4614 static int stli_initbrds(void)
4616 stlibrd_t *brdp, *nxtbrdp;
4621 printk(KERN_DEBUG "stli_initbrds()\n");
4624 if (stli_nrbrds > STL_MAXBRDS) {
4625 printk(KERN_INFO "STALLION: too many boards in configuration "
4626 "table, truncating to %d\n", STL_MAXBRDS);
4627 stli_nrbrds = STL_MAXBRDS;
4631 * Firstly scan the list of static boards configured. Allocate
4632 * resources and initialize the boards as found. If this is a
4633 * module then let the module args override static configuration.
4635 for (i = 0; (i < stli_nrbrds); i++) {
4636 confp = &stli_brdconf[i];
4638 stli_parsebrd(confp, stli_brdsp[i]);
4640 if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL)
4643 brdp->brdtype = confp->brdtype;
4644 brdp->iobase = confp->ioaddr1;
4645 brdp->memaddr = confp->memaddr;
4650 * Static configuration table done, so now use dynamic methods to
4651 * see if any more boards should be configured.
4657 stli_findeisabrds();
4663 * All found boards are initialized. Now for a little optimization, if
4664 * no boards are sharing the "shared memory" regions then we can just
4665 * leave them all enabled. This is in fact the usual case.
4668 if (stli_nrbrds > 1) {
4669 for (i = 0; (i < stli_nrbrds); i++) {
4670 brdp = stli_brds[i];
4671 if (brdp == (stlibrd_t *) NULL)
4673 for (j = i + 1; (j < stli_nrbrds); j++) {
4674 nxtbrdp = stli_brds[j];
4675 if (nxtbrdp == (stlibrd_t *) NULL)
4677 if ((brdp->membase >= nxtbrdp->membase) &&
4678 (brdp->membase <= (nxtbrdp->membase +
4679 nxtbrdp->memsize - 1))) {
4687 if (stli_shared == 0) {
4688 for (i = 0; (i < stli_nrbrds); i++) {
4689 brdp = stli_brds[i];
4690 if (brdp == (stlibrd_t *) NULL)
4692 if (brdp->state & BST_FOUND) {
4694 brdp->enable = NULL;
4695 brdp->disable = NULL;
4703 /*****************************************************************************/
4706 * Code to handle an "staliomem" read operation. This device is the
4707 * contents of the board shared memory. It is used for down loading
4708 * the slave image (and debugging :-)
4711 static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp)
4713 unsigned long flags;
4719 printk(KERN_DEBUG "stli_memread(fp=%x,buf=%x,count=%x,offp=%x)\n",
4720 (int) fp, (int) buf, count, (int) offp);
4723 brdnr = iminor(fp->f_dentry->d_inode);
4724 if (brdnr >= stli_nrbrds)
4726 brdp = stli_brds[brdnr];
4727 if (brdp == (stlibrd_t *) NULL)
4729 if (brdp->state == 0)
4731 if (fp->f_pos >= brdp->memsize)
4734 size = MIN(count, (brdp->memsize - fp->f_pos));
4740 memptr = (void *) EBRDGETMEMPTR(brdp, fp->f_pos);
4741 n = MIN(size, (brdp->pagesize - (((unsigned long) fp->f_pos) % brdp->pagesize)));
4742 if (copy_to_user(buf, memptr, n)) {
4752 restore_flags(flags);
4757 /*****************************************************************************/
4760 * Code to handle an "staliomem" write operation. This device is the
4761 * contents of the board shared memory. It is used for down loading
4762 * the slave image (and debugging :-)
4765 static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp)
4767 unsigned long flags;
4774 printk(KERN_DEBUG "stli_memwrite(fp=%x,buf=%x,count=%x,offp=%x)\n",
4775 (int) fp, (int) buf, count, (int) offp);
4778 brdnr = iminor(fp->f_dentry->d_inode);
4779 if (brdnr >= stli_nrbrds)
4781 brdp = stli_brds[brdnr];
4782 if (brdp == (stlibrd_t *) NULL)
4784 if (brdp->state == 0)
4786 if (fp->f_pos >= brdp->memsize)
4789 chbuf = (char __user *) buf;
4790 size = MIN(count, (brdp->memsize - fp->f_pos));
4796 memptr = (void *) EBRDGETMEMPTR(brdp, fp->f_pos);
4797 n = MIN(size, (brdp->pagesize - (((unsigned long) fp->f_pos) % brdp->pagesize)));
4798 if (copy_from_user(memptr, chbuf, n)) {
4808 restore_flags(flags);
4813 /*****************************************************************************/
4816 * Return the board stats structure to user app.
4819 static int stli_getbrdstats(combrd_t __user *bp)
4824 if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t)))
4826 if (stli_brdstats.brd >= STL_MAXBRDS)
4828 brdp = stli_brds[stli_brdstats.brd];
4829 if (brdp == (stlibrd_t *) NULL)
4832 memset(&stli_brdstats, 0, sizeof(combrd_t));
4833 stli_brdstats.brd = brdp->brdnr;
4834 stli_brdstats.type = brdp->brdtype;
4835 stli_brdstats.hwid = 0;
4836 stli_brdstats.state = brdp->state;
4837 stli_brdstats.ioaddr = brdp->iobase;
4838 stli_brdstats.memaddr = brdp->memaddr;
4839 stli_brdstats.nrpanels = brdp->nrpanels;
4840 stli_brdstats.nrports = brdp->nrports;
4841 for (i = 0; (i < brdp->nrpanels); i++) {
4842 stli_brdstats.panels[i].panel = i;
4843 stli_brdstats.panels[i].hwid = brdp->panelids[i];
4844 stli_brdstats.panels[i].nrports = brdp->panels[i];
4847 if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t)))
4852 /*****************************************************************************/
4855 * Resolve the referenced port number into a port struct pointer.
4858 static stliport_t *stli_getport(int brdnr, int panelnr, int portnr)
4863 if ((brdnr < 0) || (brdnr >= STL_MAXBRDS))
4864 return((stliport_t *) NULL);
4865 brdp = stli_brds[brdnr];
4866 if (brdp == (stlibrd_t *) NULL)
4867 return((stliport_t *) NULL);
4868 for (i = 0; (i < panelnr); i++)
4869 portnr += brdp->panels[i];
4870 if ((portnr < 0) || (portnr >= brdp->nrports))
4871 return((stliport_t *) NULL);
4872 return(brdp->ports[portnr]);
4875 /*****************************************************************************/
4878 * Return the port stats structure to user app. A NULL port struct
4879 * pointer passed in means that we need to find out from the app
4880 * what port to get stats for (used through board control device).
4883 static int stli_portcmdstats(stliport_t *portp)
4885 unsigned long flags;
4889 memset(&stli_comstats, 0, sizeof(comstats_t));
4891 if (portp == (stliport_t *) NULL)
4893 brdp = stli_brds[portp->brdnr];
4894 if (brdp == (stlibrd_t *) NULL)
4897 if (brdp->state & BST_STARTED) {
4898 if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS,
4899 &stli_cdkstats, sizeof(asystats_t), 1)) < 0)
4902 memset(&stli_cdkstats, 0, sizeof(asystats_t));
4905 stli_comstats.brd = portp->brdnr;
4906 stli_comstats.panel = portp->panelnr;
4907 stli_comstats.port = portp->portnr;
4908 stli_comstats.state = portp->state;
4909 stli_comstats.flags = portp->flags;
4913 if (portp->tty != (struct tty_struct *) NULL) {
4914 if (portp->tty->driver_data == portp) {
4915 stli_comstats.ttystate = portp->tty->flags;
4916 stli_comstats.rxbuffered = -1 /*portp->tty->flip.count*/;
4917 if (portp->tty->termios != (struct termios *) NULL) {
4918 stli_comstats.cflags = portp->tty->termios->c_cflag;
4919 stli_comstats.iflags = portp->tty->termios->c_iflag;
4920 stli_comstats.oflags = portp->tty->termios->c_oflag;
4921 stli_comstats.lflags = portp->tty->termios->c_lflag;
4925 restore_flags(flags);
4927 stli_comstats.txtotal = stli_cdkstats.txchars;
4928 stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover;
4929 stli_comstats.txbuffered = stli_cdkstats.txringq;
4930 stli_comstats.rxbuffered += stli_cdkstats.rxringq;
4931 stli_comstats.rxoverrun = stli_cdkstats.overruns;
4932 stli_comstats.rxparity = stli_cdkstats.parity;
4933 stli_comstats.rxframing = stli_cdkstats.framing;
4934 stli_comstats.rxlost = stli_cdkstats.ringover;
4935 stli_comstats.rxbreaks = stli_cdkstats.rxbreaks;
4936 stli_comstats.txbreaks = stli_cdkstats.txbreaks;
4937 stli_comstats.txxon = stli_cdkstats.txstart;
4938 stli_comstats.txxoff = stli_cdkstats.txstop;
4939 stli_comstats.rxxon = stli_cdkstats.rxstart;
4940 stli_comstats.rxxoff = stli_cdkstats.rxstop;
4941 stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2;
4942 stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff;
4943 stli_comstats.modem = stli_cdkstats.dcdcnt;
4944 stli_comstats.hwid = stli_cdkstats.hwid;
4945 stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals);
4950 /*****************************************************************************/
4953 * Return the port stats structure to user app. A NULL port struct
4954 * pointer passed in means that we need to find out from the app
4955 * what port to get stats for (used through board control device).
4958 static int stli_getportstats(stliport_t *portp, comstats_t __user *cp)
4964 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4966 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4967 stli_comstats.port);
4972 brdp = stli_brds[portp->brdnr];
4976 if ((rc = stli_portcmdstats(portp)) < 0)
4979 return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ?
4983 /*****************************************************************************/
4986 * Clear the port stats structure. We also return it zeroed out...
4989 static int stli_clrportstats(stliport_t *portp, comstats_t __user *cp)
4995 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4997 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4998 stli_comstats.port);
5003 brdp = stli_brds[portp->brdnr];
5007 if (brdp->state & BST_STARTED) {
5008 if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0)
5012 memset(&stli_comstats, 0, sizeof(comstats_t));
5013 stli_comstats.brd = portp->brdnr;
5014 stli_comstats.panel = portp->panelnr;
5015 stli_comstats.port = portp->portnr;
5017 if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t)))
5022 /*****************************************************************************/
5025 * Return the entire driver ports structure to a user app.
5028 static int stli_getportstruct(stliport_t __user *arg)
5032 if (copy_from_user(&stli_dummyport, arg, sizeof(stliport_t)))
5034 portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr,
5035 stli_dummyport.portnr);
5038 if (copy_to_user(arg, portp, sizeof(stliport_t)))
5043 /*****************************************************************************/
5046 * Return the entire driver board structure to a user app.
5049 static int stli_getbrdstruct(stlibrd_t __user *arg)
5053 if (copy_from_user(&stli_dummybrd, arg, sizeof(stlibrd_t)))
5055 if ((stli_dummybrd.brdnr < 0) || (stli_dummybrd.brdnr >= STL_MAXBRDS))
5057 brdp = stli_brds[stli_dummybrd.brdnr];
5060 if (copy_to_user(arg, brdp, sizeof(stlibrd_t)))
5065 /*****************************************************************************/
5068 * The "staliomem" device is also required to do some special operations on
5069 * the board. We need to be able to send an interrupt to the board,
5070 * reset it, and start/stop it.
5073 static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg)
5076 int brdnr, rc, done;
5077 void __user *argp = (void __user *)arg;
5080 printk(KERN_DEBUG "stli_memioctl(ip=%x,fp=%x,cmd=%x,arg=%x)\n",
5081 (int) ip, (int) fp, cmd, (int) arg);
5085 * First up handle the board independent ioctls.
5091 case COM_GETPORTSTATS:
5092 rc = stli_getportstats(NULL, argp);
5095 case COM_CLRPORTSTATS:
5096 rc = stli_clrportstats(NULL, argp);
5099 case COM_GETBRDSTATS:
5100 rc = stli_getbrdstats(argp);
5104 rc = stli_getportstruct(argp);
5108 rc = stli_getbrdstruct(argp);
5117 * Now handle the board specific ioctls. These all depend on the
5118 * minor number of the device they were called from.
5121 if (brdnr >= STL_MAXBRDS)
5123 brdp = stli_brds[brdnr];
5126 if (brdp->state == 0)
5134 rc = stli_startbrd(brdp);
5137 brdp->state &= ~BST_STARTED;
5140 brdp->state &= ~BST_STARTED;
5142 if (stli_shared == 0) {
5143 if (brdp->reenable != NULL)
5144 (* brdp->reenable)(brdp);
5155 static struct tty_operations stli_ops = {
5157 .close = stli_close,
5158 .write = stli_write,
5159 .put_char = stli_putchar,
5160 .flush_chars = stli_flushchars,
5161 .write_room = stli_writeroom,
5162 .chars_in_buffer = stli_charsinbuffer,
5163 .ioctl = stli_ioctl,
5164 .set_termios = stli_settermios,
5165 .throttle = stli_throttle,
5166 .unthrottle = stli_unthrottle,
5168 .start = stli_start,
5169 .hangup = stli_hangup,
5170 .flush_buffer = stli_flushbuffer,
5171 .break_ctl = stli_breakctl,
5172 .wait_until_sent = stli_waituntilsent,
5173 .send_xchar = stli_sendxchar,
5174 .read_proc = stli_readproc,
5175 .tiocmget = stli_tiocmget,
5176 .tiocmset = stli_tiocmset,
5179 /*****************************************************************************/
5181 int __init stli_init(void)
5184 printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion);
5188 stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS);
5193 * Allocate a temporary write buffer.
5195 stli_tmpwritebuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL);
5196 if (!stli_tmpwritebuf)
5197 printk(KERN_ERR "STALLION: failed to allocate memory "
5198 "(size=%d)\n", STLI_TXBUFSIZE);
5199 stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL);
5200 if (!stli_txcookbuf)
5201 printk(KERN_ERR "STALLION: failed to allocate memory "
5202 "(size=%d)\n", STLI_TXBUFSIZE);
5205 * Set up a character driver for the shared memory region. We need this
5206 * to down load the slave code image. Also it is a useful debugging tool.
5208 if (register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem))
5209 printk(KERN_ERR "STALLION: failed to register serial memory "
5212 istallion_class = class_create(THIS_MODULE, "staliomem");
5213 for (i = 0; i < 4; i++)
5214 class_device_create(istallion_class, NULL,
5215 MKDEV(STL_SIOMEMMAJOR, i),
5216 NULL, "staliomem%d", i);
5219 * Set up the tty driver structure and register us as a driver.
5221 stli_serial->owner = THIS_MODULE;
5222 stli_serial->driver_name = stli_drvname;
5223 stli_serial->name = stli_serialname;
5224 stli_serial->major = STL_SERIALMAJOR;
5225 stli_serial->minor_start = 0;
5226 stli_serial->type = TTY_DRIVER_TYPE_SERIAL;
5227 stli_serial->subtype = SERIAL_TYPE_NORMAL;
5228 stli_serial->init_termios = stli_deftermios;
5229 stli_serial->flags = TTY_DRIVER_REAL_RAW;
5230 tty_set_operations(stli_serial, &stli_ops);
5232 if (tty_register_driver(stli_serial)) {
5233 put_tty_driver(stli_serial);
5234 printk(KERN_ERR "STALLION: failed to register serial driver\n");
5240 /*****************************************************************************/