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.
19 /*****************************************************************************/
21 #include <linux/module.h>
22 #include <linux/slab.h>
23 #include <linux/interrupt.h>
24 #include <linux/tty.h>
25 #include <linux/tty_flip.h>
26 #include <linux/serial.h>
27 #include <linux/cdk.h>
28 #include <linux/comstats.h>
29 #include <linux/istallion.h>
30 #include <linux/ioport.h>
31 #include <linux/delay.h>
32 #include <linux/init.h>
33 #include <linux/device.h>
34 #include <linux/wait.h>
35 #include <linux/eisa.h>
36 #include <linux/ctype.h>
39 #include <asm/uaccess.h>
41 #include <linux/pci.h>
43 /*****************************************************************************/
46 * Define different board types. Not all of the following board types
47 * are supported by this driver. But I will use the standard "assigned"
48 * board numbers. Currently supported boards are abbreviated as:
49 * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and
53 #define BRD_STALLION 1
55 #define BRD_ONBOARD2 3
57 #define BRD_ONBOARDE 7
63 #define BRD_BRUMBY BRD_BRUMBY4
66 * Define a configuration structure to hold the board configuration.
67 * Need to set this up in the code (for now) with the boards that are
68 * to be configured into the system. This is what needs to be modified
69 * when adding/removing/modifying boards. Each line entry in the
70 * stli_brdconf[] array is a board. Each line contains io/irq/memory
71 * ranges for that board (as well as what type of board it is).
73 * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },
74 * This line will configure an EasyConnection 8/64 at io address 2a0,
75 * and shared memory address of cc000. Multiple EasyConnection 8/64
76 * boards can share the same shared memory address space. No interrupt
77 * is required for this board type.
79 * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 },
80 * This line will configure an EasyConnection 8/64 EISA in slot 5 and
81 * shared memory address of 0x80000000 (2 GByte). Multiple
82 * EasyConnection 8/64 EISA boards can share the same shared memory
83 * address space. No interrupt is required for this board type.
85 * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 },
86 * This line will configure an ONboard (ISA type) at io address 240,
87 * and shared memory address of d0000. Multiple ONboards can share
88 * the same shared memory address space. No interrupt required.
90 * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 },
91 * This line will configure a Brumby board (any number of ports!) at
92 * io address 360 and shared memory address of c8000. All Brumby boards
93 * configured into a system must have their own separate io and memory
94 * addresses. No interrupt is required.
96 * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 },
97 * This line will configure an original Stallion board at io address 330
98 * and shared memory address d0000 (this would only be valid for a "V4.0"
99 * or Rev.O Stallion board). All Stallion boards configured into the
100 * system must have their own separate io and memory addresses. No
101 * interrupt is required.
108 unsigned long memaddr;
113 static unsigned int stli_nrbrds;
115 /* stli_lock must NOT be taken holding brd_lock */
116 static spinlock_t stli_lock; /* TTY logic lock */
117 static spinlock_t brd_lock; /* Board logic lock */
120 * There is some experimental EISA board detection code in this driver.
121 * By default it is disabled, but for those that want to try it out,
122 * then set the define below to be 1.
124 #define STLI_EISAPROBE 0
126 /*****************************************************************************/
129 * Define some important driver characteristics. Device major numbers
130 * allocated as per Linux Device Registry.
132 #ifndef STL_SIOMEMMAJOR
133 #define STL_SIOMEMMAJOR 28
135 #ifndef STL_SERIALMAJOR
136 #define STL_SERIALMAJOR 24
138 #ifndef STL_CALLOUTMAJOR
139 #define STL_CALLOUTMAJOR 25
142 /*****************************************************************************/
145 * Define our local driver identity first. Set up stuff to deal with
146 * all the local structures required by a serial tty driver.
148 static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver";
149 static char *stli_drvname = "istallion";
150 static char *stli_drvversion = "5.6.0";
151 static char *stli_serialname = "ttyE";
153 static struct tty_driver *stli_serial;
154 static const struct tty_port_operations stli_port_ops;
156 #define STLI_TXBUFSIZE 4096
159 * Use a fast local buffer for cooked characters. Typically a whole
160 * bunch of cooked characters come in for a port, 1 at a time. So we
161 * save those up into a local buffer, then write out the whole lot
162 * with a large memcpy. Just use 1 buffer for all ports, since its
163 * use it is only need for short periods of time by each port.
165 static char *stli_txcookbuf;
166 static int stli_txcooksize;
167 static int stli_txcookrealsize;
168 static struct tty_struct *stli_txcooktty;
171 * Define a local default termios struct. All ports will be created
172 * with this termios initially. Basically all it defines is a raw port
173 * at 9600 baud, 8 data bits, no parity, 1 stop bit.
175 static struct ktermios stli_deftermios = {
176 .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL),
183 * Define global stats structures. Not used often, and can be
184 * re-used for each stats call.
186 static comstats_t stli_comstats;
187 static combrd_t stli_brdstats;
188 static struct asystats stli_cdkstats;
190 /*****************************************************************************/
192 static DEFINE_MUTEX(stli_brdslock);
193 static struct stlibrd *stli_brds[STL_MAXBRDS];
195 static int stli_shared;
198 * Per board state flags. Used with the state field of the board struct.
199 * Not really much here... All we need to do is keep track of whether
200 * the board has been detected, and whether it is actually running a slave
203 #define BST_FOUND 0x1
204 #define BST_STARTED 0x2
205 #define BST_PROBED 0x4
208 * Define the set of port state flags. These are marked for internal
209 * state purposes only, usually to do with the state of communications
210 * with the slave. Most of them need to be updated atomically, so always
211 * use the bit setting operations (unless protected by cli/sti).
213 #define ST_INITIALIZING 1
219 #define ST_DOFLUSHRX 7
220 #define ST_DOFLUSHTX 8
223 #define ST_GETSIGS 11
226 * Define an array of board names as printable strings. Handy for
227 * referencing boards when printing trace and stuff.
229 static char *stli_brdnames[] = {
262 /*****************************************************************************/
265 * Define some string labels for arguments passed from the module
266 * load line. These allow for easy board definitions, and easy
267 * modification of the io, memory and irq resoucres.
270 static char *board0[8];
271 static char *board1[8];
272 static char *board2[8];
273 static char *board3[8];
275 static char **stli_brdsp[] = {
283 * Define a set of common board names, and types. This is used to
284 * parse any module arguments.
287 static struct stlibrdtype {
291 { "stallion", BRD_STALLION },
292 { "1", BRD_STALLION },
293 { "brumby", BRD_BRUMBY },
294 { "brumby4", BRD_BRUMBY },
295 { "brumby/4", BRD_BRUMBY },
296 { "brumby-4", BRD_BRUMBY },
297 { "brumby8", BRD_BRUMBY },
298 { "brumby/8", BRD_BRUMBY },
299 { "brumby-8", BRD_BRUMBY },
300 { "brumby16", BRD_BRUMBY },
301 { "brumby/16", BRD_BRUMBY },
302 { "brumby-16", BRD_BRUMBY },
304 { "onboard2", BRD_ONBOARD2 },
305 { "onboard-2", BRD_ONBOARD2 },
306 { "onboard/2", BRD_ONBOARD2 },
307 { "onboard-mc", BRD_ONBOARD2 },
308 { "onboard/mc", BRD_ONBOARD2 },
309 { "onboard-mca", BRD_ONBOARD2 },
310 { "onboard/mca", BRD_ONBOARD2 },
311 { "3", BRD_ONBOARD2 },
312 { "onboard", BRD_ONBOARD },
313 { "onboardat", BRD_ONBOARD },
314 { "4", BRD_ONBOARD },
315 { "onboarde", BRD_ONBOARDE },
316 { "onboard-e", BRD_ONBOARDE },
317 { "onboard/e", BRD_ONBOARDE },
318 { "onboard-ei", BRD_ONBOARDE },
319 { "onboard/ei", BRD_ONBOARDE },
320 { "7", BRD_ONBOARDE },
322 { "ecpat", BRD_ECP },
323 { "ec8/64", BRD_ECP },
324 { "ec8/64-at", BRD_ECP },
325 { "ec8/64-isa", BRD_ECP },
327 { "ecpe", BRD_ECPE },
328 { "ecpei", BRD_ECPE },
329 { "ec8/64-e", BRD_ECPE },
330 { "ec8/64-ei", BRD_ECPE },
332 { "ecpmc", BRD_ECPMC },
333 { "ec8/64-mc", BRD_ECPMC },
334 { "ec8/64-mca", BRD_ECPMC },
336 { "ecppci", BRD_ECPPCI },
337 { "ec/ra", BRD_ECPPCI },
338 { "ec/ra-pc", BRD_ECPPCI },
339 { "ec/ra-pci", BRD_ECPPCI },
340 { "29", BRD_ECPPCI },
344 * Define the module agruments.
346 MODULE_AUTHOR("Greg Ungerer");
347 MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver");
348 MODULE_LICENSE("GPL");
351 module_param_array(board0, charp, NULL, 0);
352 MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]");
353 module_param_array(board1, charp, NULL, 0);
354 MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]");
355 module_param_array(board2, charp, NULL, 0);
356 MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]");
357 module_param_array(board3, charp, NULL, 0);
358 MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]");
360 #if STLI_EISAPROBE != 0
362 * Set up a default memory address table for EISA board probing.
363 * The default addresses are all bellow 1Mbyte, which has to be the
364 * case anyway. They should be safe, since we only read values from
365 * them, and interrupts are disabled while we do it. If the higher
366 * memory support is compiled in then we also try probing around
367 * the 1Gb, 2Gb and 3Gb areas as well...
369 static unsigned long stli_eisamemprobeaddrs[] = {
370 0xc0000, 0xd0000, 0xe0000, 0xf0000,
371 0x80000000, 0x80010000, 0x80020000, 0x80030000,
372 0x40000000, 0x40010000, 0x40020000, 0x40030000,
373 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000,
374 0xff000000, 0xff010000, 0xff020000, 0xff030000,
377 static int stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs);
381 * Define the Stallion PCI vendor and device IDs.
383 #ifndef PCI_DEVICE_ID_ECRA
384 #define PCI_DEVICE_ID_ECRA 0x0004
387 static struct pci_device_id istallion_pci_tbl[] = {
388 { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA), },
391 MODULE_DEVICE_TABLE(pci, istallion_pci_tbl);
393 static struct pci_driver stli_pcidriver;
395 /*****************************************************************************/
398 * Hardware configuration info for ECP boards. These defines apply
399 * to the directly accessible io ports of the ECP. There is a set of
400 * defines for each ECP board type, ISA, EISA, MCA and PCI.
404 #define ECP_MEMSIZE (128 * 1024)
405 #define ECP_PCIMEMSIZE (256 * 1024)
407 #define ECP_ATPAGESIZE (4 * 1024)
408 #define ECP_MCPAGESIZE (4 * 1024)
409 #define ECP_EIPAGESIZE (64 * 1024)
410 #define ECP_PCIPAGESIZE (64 * 1024)
412 #define STL_EISAID 0x8c4e
415 * Important defines for the ISA class of ECP board.
418 #define ECP_ATCONFR 1
419 #define ECP_ATMEMAR 2
420 #define ECP_ATMEMPR 3
421 #define ECP_ATSTOP 0x1
422 #define ECP_ATINTENAB 0x10
423 #define ECP_ATENABLE 0x20
424 #define ECP_ATDISABLE 0x00
425 #define ECP_ATADDRMASK 0x3f000
426 #define ECP_ATADDRSHFT 12
429 * Important defines for the EISA class of ECP board.
432 #define ECP_EIMEMARL 1
433 #define ECP_EICONFR 2
434 #define ECP_EIMEMARH 3
435 #define ECP_EIENABLE 0x1
436 #define ECP_EIDISABLE 0x0
437 #define ECP_EISTOP 0x4
438 #define ECP_EIEDGE 0x00
439 #define ECP_EILEVEL 0x80
440 #define ECP_EIADDRMASKL 0x00ff0000
441 #define ECP_EIADDRSHFTL 16
442 #define ECP_EIADDRMASKH 0xff000000
443 #define ECP_EIADDRSHFTH 24
444 #define ECP_EIBRDENAB 0xc84
446 #define ECP_EISAID 0x4
449 * Important defines for the Micro-channel class of ECP board.
450 * (It has a lot in common with the ISA boards.)
453 #define ECP_MCCONFR 1
454 #define ECP_MCSTOP 0x20
455 #define ECP_MCENABLE 0x80
456 #define ECP_MCDISABLE 0x00
459 * Important defines for the PCI class of ECP board.
460 * (It has a lot in common with the other ECP boards.)
462 #define ECP_PCIIREG 0
463 #define ECP_PCICONFR 1
464 #define ECP_PCISTOP 0x01
467 * Hardware configuration info for ONboard and Brumby boards. These
468 * defines apply to the directly accessible io ports of these boards.
470 #define ONB_IOSIZE 16
471 #define ONB_MEMSIZE (64 * 1024)
472 #define ONB_ATPAGESIZE (64 * 1024)
473 #define ONB_MCPAGESIZE (64 * 1024)
474 #define ONB_EIMEMSIZE (128 * 1024)
475 #define ONB_EIPAGESIZE (64 * 1024)
478 * Important defines for the ISA class of ONboard board.
481 #define ONB_ATMEMAR 1
482 #define ONB_ATCONFR 2
483 #define ONB_ATSTOP 0x4
484 #define ONB_ATENABLE 0x01
485 #define ONB_ATDISABLE 0x00
486 #define ONB_ATADDRMASK 0xff0000
487 #define ONB_ATADDRSHFT 16
489 #define ONB_MEMENABLO 0
490 #define ONB_MEMENABHI 0x02
493 * Important defines for the EISA class of ONboard board.
496 #define ONB_EIMEMARL 1
497 #define ONB_EICONFR 2
498 #define ONB_EIMEMARH 3
499 #define ONB_EIENABLE 0x1
500 #define ONB_EIDISABLE 0x0
501 #define ONB_EISTOP 0x4
502 #define ONB_EIEDGE 0x00
503 #define ONB_EILEVEL 0x80
504 #define ONB_EIADDRMASKL 0x00ff0000
505 #define ONB_EIADDRSHFTL 16
506 #define ONB_EIADDRMASKH 0xff000000
507 #define ONB_EIADDRSHFTH 24
508 #define ONB_EIBRDENAB 0xc84
510 #define ONB_EISAID 0x1
513 * Important defines for the Brumby boards. They are pretty simple,
514 * there is not much that is programmably configurable.
516 #define BBY_IOSIZE 16
517 #define BBY_MEMSIZE (64 * 1024)
518 #define BBY_PAGESIZE (16 * 1024)
521 #define BBY_ATCONFR 1
522 #define BBY_ATSTOP 0x4
525 * Important defines for the Stallion boards. They are pretty simple,
526 * there is not much that is programmably configurable.
528 #define STAL_IOSIZE 16
529 #define STAL_MEMSIZE (64 * 1024)
530 #define STAL_PAGESIZE (64 * 1024)
533 * Define the set of status register values for EasyConnection panels.
534 * The signature will return with the status value for each panel. From
535 * this we can determine what is attached to the board - before we have
536 * actually down loaded any code to it.
538 #define ECH_PNLSTATUS 2
539 #define ECH_PNL16PORT 0x20
540 #define ECH_PNLIDMASK 0x07
541 #define ECH_PNLXPID 0x40
542 #define ECH_PNLINTRPEND 0x80
545 * Define some macros to do things to the board. Even those these boards
546 * are somewhat related there is often significantly different ways of
547 * doing some operation on it (like enable, paging, reset, etc). So each
548 * board class has a set of functions which do the commonly required
549 * operations. The macros below basically just call these functions,
550 * generally checking for a NULL function - which means that the board
551 * needs nothing done to it to achieve this operation!
553 #define EBRDINIT(brdp) \
554 if (brdp->init != NULL) \
557 #define EBRDENABLE(brdp) \
558 if (brdp->enable != NULL) \
559 (* brdp->enable)(brdp);
561 #define EBRDDISABLE(brdp) \
562 if (brdp->disable != NULL) \
563 (* brdp->disable)(brdp);
565 #define EBRDINTR(brdp) \
566 if (brdp->intr != NULL) \
567 (* brdp->intr)(brdp);
569 #define EBRDRESET(brdp) \
570 if (brdp->reset != NULL) \
571 (* brdp->reset)(brdp);
573 #define EBRDGETMEMPTR(brdp,offset) \
574 (* brdp->getmemptr)(brdp, offset, __LINE__)
577 * Define the maximal baud rate, and the default baud base for ports.
579 #define STL_MAXBAUD 460800
580 #define STL_BAUDBASE 115200
581 #define STL_CLOSEDELAY (5 * HZ / 10)
583 /*****************************************************************************/
586 * Define macros to extract a brd or port number from a minor number.
588 #define MINOR2BRD(min) (((min) & 0xc0) >> 6)
589 #define MINOR2PORT(min) ((min) & 0x3f)
591 /*****************************************************************************/
594 * Prototype all functions in this driver!
597 static int stli_parsebrd(struct stlconf *confp, char **argp);
598 static int stli_open(struct tty_struct *tty, struct file *filp);
599 static void stli_close(struct tty_struct *tty, struct file *filp);
600 static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count);
601 static int stli_putchar(struct tty_struct *tty, unsigned char ch);
602 static void stli_flushchars(struct tty_struct *tty);
603 static int stli_writeroom(struct tty_struct *tty);
604 static int stli_charsinbuffer(struct tty_struct *tty);
605 static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg);
606 static void stli_settermios(struct tty_struct *tty, struct ktermios *old);
607 static void stli_throttle(struct tty_struct *tty);
608 static void stli_unthrottle(struct tty_struct *tty);
609 static void stli_stop(struct tty_struct *tty);
610 static void stli_start(struct tty_struct *tty);
611 static void stli_flushbuffer(struct tty_struct *tty);
612 static int stli_breakctl(struct tty_struct *tty, int state);
613 static void stli_waituntilsent(struct tty_struct *tty, int timeout);
614 static void stli_sendxchar(struct tty_struct *tty, char ch);
615 static void stli_hangup(struct tty_struct *tty);
616 static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos);
618 static int stli_brdinit(struct stlibrd *brdp);
619 static int stli_startbrd(struct stlibrd *brdp);
620 static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp);
621 static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp);
622 static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg);
623 static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp);
624 static void stli_poll(unsigned long arg);
625 static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp);
626 static int stli_initopen(struct tty_struct *tty, struct stlibrd *brdp, struct stliport *portp);
627 static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
628 static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
629 static int stli_setport(struct tty_struct *tty);
630 static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
631 static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
632 static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
633 static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp);
634 static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp, asyport_t *pp, struct ktermios *tiosp);
635 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts);
636 static long stli_mktiocm(unsigned long sigvalue);
637 static void stli_read(struct stlibrd *brdp, struct stliport *portp);
638 static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp);
639 static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp);
640 static int stli_getbrdstats(combrd_t __user *bp);
641 static int stli_getportstats(struct tty_struct *tty, struct stliport *portp, comstats_t __user *cp);
642 static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp);
643 static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp);
644 static int stli_getportstruct(struct stliport __user *arg);
645 static int stli_getbrdstruct(struct stlibrd __user *arg);
646 static struct stlibrd *stli_allocbrd(void);
648 static void stli_ecpinit(struct stlibrd *brdp);
649 static void stli_ecpenable(struct stlibrd *brdp);
650 static void stli_ecpdisable(struct stlibrd *brdp);
651 static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
652 static void stli_ecpreset(struct stlibrd *brdp);
653 static void stli_ecpintr(struct stlibrd *brdp);
654 static void stli_ecpeiinit(struct stlibrd *brdp);
655 static void stli_ecpeienable(struct stlibrd *brdp);
656 static void stli_ecpeidisable(struct stlibrd *brdp);
657 static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
658 static void stli_ecpeireset(struct stlibrd *brdp);
659 static void stli_ecpmcenable(struct stlibrd *brdp);
660 static void stli_ecpmcdisable(struct stlibrd *brdp);
661 static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
662 static void stli_ecpmcreset(struct stlibrd *brdp);
663 static void stli_ecppciinit(struct stlibrd *brdp);
664 static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
665 static void stli_ecppcireset(struct stlibrd *brdp);
667 static void stli_onbinit(struct stlibrd *brdp);
668 static void stli_onbenable(struct stlibrd *brdp);
669 static void stli_onbdisable(struct stlibrd *brdp);
670 static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
671 static void stli_onbreset(struct stlibrd *brdp);
672 static void stli_onbeinit(struct stlibrd *brdp);
673 static void stli_onbeenable(struct stlibrd *brdp);
674 static void stli_onbedisable(struct stlibrd *brdp);
675 static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
676 static void stli_onbereset(struct stlibrd *brdp);
677 static void stli_bbyinit(struct stlibrd *brdp);
678 static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
679 static void stli_bbyreset(struct stlibrd *brdp);
680 static void stli_stalinit(struct stlibrd *brdp);
681 static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
682 static void stli_stalreset(struct stlibrd *brdp);
684 static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr);
686 static int stli_initecp(struct stlibrd *brdp);
687 static int stli_initonb(struct stlibrd *brdp);
688 #if STLI_EISAPROBE != 0
689 static int stli_eisamemprobe(struct stlibrd *brdp);
691 static int stli_initports(struct stlibrd *brdp);
693 /*****************************************************************************/
696 * Define the driver info for a user level shared memory device. This
697 * device will work sort of like the /dev/kmem device - except that it
698 * will give access to the shared memory on the Stallion intelligent
699 * board. This is also a very useful debugging tool.
701 static const struct file_operations stli_fsiomem = {
702 .owner = THIS_MODULE,
703 .read = stli_memread,
704 .write = stli_memwrite,
705 .ioctl = stli_memioctl,
708 /*****************************************************************************/
711 * Define a timer_list entry for our poll routine. The slave board
712 * is polled every so often to see if anything needs doing. This is
713 * much cheaper on host cpu than using interrupts. It turns out to
714 * not increase character latency by much either...
716 static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0);
718 static int stli_timeron;
721 * Define the calculation for the timeout routine.
723 #define STLI_TIMEOUT (jiffies + 1)
725 /*****************************************************************************/
727 static struct class *istallion_class;
729 static void stli_cleanup_ports(struct stlibrd *brdp)
731 struct stliport *portp;
733 struct tty_struct *tty;
735 for (j = 0; j < STL_MAXPORTS; j++) {
736 portp = brdp->ports[j];
738 tty = tty_port_tty_get(&portp->port);
748 /*****************************************************************************/
751 * Parse the supplied argument string, into the board conf struct.
754 static int stli_parsebrd(struct stlconf *confp, char **argp)
759 if (argp[0] == NULL || *argp[0] == 0)
762 for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++)
765 for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) {
766 if (strcmp(stli_brdstr[i].name, argp[0]) == 0)
769 if (i == ARRAY_SIZE(stli_brdstr)) {
770 printk(KERN_WARNING "istallion: unknown board name, %s?\n", argp[0]);
774 confp->brdtype = stli_brdstr[i].type;
775 if (argp[1] != NULL && *argp[1] != 0)
776 confp->ioaddr1 = simple_strtoul(argp[1], NULL, 0);
777 if (argp[2] != NULL && *argp[2] != 0)
778 confp->memaddr = simple_strtoul(argp[2], NULL, 0);
782 /*****************************************************************************/
784 static int stli_open(struct tty_struct *tty, struct file *filp)
786 struct stlibrd *brdp;
787 struct stliport *portp;
788 struct tty_port *port;
789 unsigned int minordev, brdnr, portnr;
792 minordev = tty->index;
793 brdnr = MINOR2BRD(minordev);
794 if (brdnr >= stli_nrbrds)
796 brdp = stli_brds[brdnr];
799 if ((brdp->state & BST_STARTED) == 0)
801 portnr = MINOR2PORT(minordev);
802 if (portnr > brdp->nrports)
805 portp = brdp->ports[portnr];
808 if (portp->devnr < 1)
813 * On the first open of the device setup the port hardware, and
814 * initialize the per port data structure. Since initializing the port
815 * requires several commands to the board we will need to wait for any
816 * other open that is already initializing the port.
820 tty_port_tty_set(port, tty);
821 tty->driver_data = portp;
824 wait_event_interruptible(portp->raw_wait,
825 !test_bit(ST_INITIALIZING, &portp->state));
826 if (signal_pending(current))
829 if ((portp->port.flags & ASYNC_INITIALIZED) == 0) {
830 set_bit(ST_INITIALIZING, &portp->state);
831 if ((rc = stli_initopen(tty, brdp, portp)) >= 0) {
833 port->flags |= ASYNC_INITIALIZED;
834 clear_bit(TTY_IO_ERROR, &tty->flags);
836 clear_bit(ST_INITIALIZING, &portp->state);
837 wake_up_interruptible(&portp->raw_wait);
841 return tty_port_block_til_ready(&portp->port, tty, filp);
844 /*****************************************************************************/
846 static void stli_close(struct tty_struct *tty, struct file *filp)
848 struct stlibrd *brdp;
849 struct stliport *portp;
850 struct tty_port *port;
853 portp = tty->driver_data;
858 if (tty_port_close_start(port, tty, filp) == 0)
862 * May want to wait for data to drain before closing. The BUSY flag
863 * keeps track of whether we are still transmitting or not. It is
864 * updated by messages from the slave - indicating when all chars
865 * really have drained.
867 spin_lock_irqsave(&stli_lock, flags);
868 if (tty == stli_txcooktty)
869 stli_flushchars(tty);
870 spin_unlock_irqrestore(&stli_lock, flags);
872 /* We end up doing this twice for the moment. This needs looking at
873 eventually. Note we still use portp->closing_wait as a result */
874 if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE)
875 tty_wait_until_sent(tty, portp->closing_wait);
877 /* FIXME: port locking here needs attending to */
878 port->flags &= ~ASYNC_INITIALIZED;
880 brdp = stli_brds[portp->brdnr];
881 stli_rawclose(brdp, portp, 0, 0);
882 if (tty->termios->c_cflag & HUPCL) {
883 stli_mkasysigs(&portp->asig, 0, 0);
884 if (test_bit(ST_CMDING, &portp->state))
885 set_bit(ST_DOSIGS, &portp->state);
887 stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig,
888 sizeof(asysigs_t), 0);
890 clear_bit(ST_TXBUSY, &portp->state);
891 clear_bit(ST_RXSTOP, &portp->state);
892 set_bit(TTY_IO_ERROR, &tty->flags);
893 tty_ldisc_flush(tty);
894 set_bit(ST_DOFLUSHRX, &portp->state);
895 stli_flushbuffer(tty);
897 tty_port_close_end(port, tty);
898 tty_port_tty_set(port, NULL);
901 /*****************************************************************************/
904 * Carry out first open operations on a port. This involves a number of
905 * commands to be sent to the slave. We need to open the port, set the
906 * notification events, set the initial port settings, get and set the
907 * initial signal values. We sleep and wait in between each one. But
908 * this still all happens pretty quickly.
911 static int stli_initopen(struct tty_struct *tty,
912 struct stlibrd *brdp, struct stliport *portp)
918 if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0)
921 memset(&nt, 0, sizeof(asynotify_t));
922 nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK);
924 if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt,
925 sizeof(asynotify_t), 0)) < 0)
928 stli_mkasyport(tty, portp, &aport, tty->termios);
929 if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport,
930 sizeof(asyport_t), 0)) < 0)
933 set_bit(ST_GETSIGS, &portp->state);
934 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig,
935 sizeof(asysigs_t), 1)) < 0)
937 if (test_and_clear_bit(ST_GETSIGS, &portp->state))
938 portp->sigs = stli_mktiocm(portp->asig.sigvalue);
939 stli_mkasysigs(&portp->asig, 1, 1);
940 if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
941 sizeof(asysigs_t), 0)) < 0)
947 /*****************************************************************************/
950 * Send an open message to the slave. This will sleep waiting for the
951 * acknowledgement, so must have user context. We need to co-ordinate
952 * with close events here, since we don't want open and close events
956 static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
958 cdkhdr_t __iomem *hdrp;
959 cdkctrl_t __iomem *cp;
960 unsigned char __iomem *bits;
965 * Send a message to the slave to open this port.
969 * Slave is already closing this port. This can happen if a hangup
970 * occurs on this port. So we must wait until it is complete. The
971 * order of opens and closes may not be preserved across shared
972 * memory, so we must wait until it is complete.
974 wait_event_interruptible(portp->raw_wait,
975 !test_bit(ST_CLOSING, &portp->state));
976 if (signal_pending(current)) {
981 * Everything is ready now, so write the open message into shared
982 * memory. Once the message is in set the service bits to say that
983 * this port wants service.
985 spin_lock_irqsave(&brd_lock, flags);
987 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
988 writel(arg, &cp->openarg);
989 writeb(1, &cp->open);
990 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
991 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
993 writeb(readb(bits) | portp->portbit, bits);
997 spin_unlock_irqrestore(&brd_lock, flags);
1002 * Slave is in action, so now we must wait for the open acknowledgment
1006 set_bit(ST_OPENING, &portp->state);
1007 spin_unlock_irqrestore(&brd_lock, flags);
1009 wait_event_interruptible(portp->raw_wait,
1010 !test_bit(ST_OPENING, &portp->state));
1011 if (signal_pending(current))
1014 if ((rc == 0) && (portp->rc != 0))
1019 /*****************************************************************************/
1022 * Send a close message to the slave. Normally this will sleep waiting
1023 * for the acknowledgement, but if wait parameter is 0 it will not. If
1024 * wait is true then must have user context (to sleep).
1027 static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
1029 cdkhdr_t __iomem *hdrp;
1030 cdkctrl_t __iomem *cp;
1031 unsigned char __iomem *bits;
1032 unsigned long flags;
1036 * Slave is already closing this port. This can happen if a hangup
1037 * occurs on this port.
1040 wait_event_interruptible(portp->raw_wait,
1041 !test_bit(ST_CLOSING, &portp->state));
1042 if (signal_pending(current)) {
1043 return -ERESTARTSYS;
1048 * Write the close command into shared memory.
1050 spin_lock_irqsave(&brd_lock, flags);
1052 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1053 writel(arg, &cp->closearg);
1054 writeb(1, &cp->close);
1055 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1056 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1058 writeb(readb(bits) |portp->portbit, bits);
1061 set_bit(ST_CLOSING, &portp->state);
1062 spin_unlock_irqrestore(&brd_lock, flags);
1068 * Slave is in action, so now we must wait for the open acknowledgment
1072 wait_event_interruptible(portp->raw_wait,
1073 !test_bit(ST_CLOSING, &portp->state));
1074 if (signal_pending(current))
1077 if ((rc == 0) && (portp->rc != 0))
1082 /*****************************************************************************/
1085 * Send a command to the slave and wait for the response. This must
1086 * have user context (it sleeps). This routine is generic in that it
1087 * can send any type of command. Its purpose is to wait for that command
1088 * to complete (as opposed to initiating the command then returning).
1091 static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
1093 wait_event_interruptible(portp->raw_wait,
1094 !test_bit(ST_CMDING, &portp->state));
1095 if (signal_pending(current))
1096 return -ERESTARTSYS;
1098 stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
1100 wait_event_interruptible(portp->raw_wait,
1101 !test_bit(ST_CMDING, &portp->state));
1102 if (signal_pending(current))
1103 return -ERESTARTSYS;
1110 /*****************************************************************************/
1113 * Send the termios settings for this port to the slave. This sleeps
1114 * waiting for the command to complete - so must have user context.
1117 static int stli_setport(struct tty_struct *tty)
1119 struct stliport *portp = tty->driver_data;
1120 struct stlibrd *brdp;
1125 if (portp->brdnr >= stli_nrbrds)
1127 brdp = stli_brds[portp->brdnr];
1131 stli_mkasyport(tty, portp, &aport, tty->termios);
1132 return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0));
1135 /*****************************************************************************/
1137 static int stli_carrier_raised(struct tty_port *port)
1139 struct stliport *portp = container_of(port, struct stliport, port);
1140 return (portp->sigs & TIOCM_CD) ? 1 : 0;
1143 static void stli_raise_dtr_rts(struct tty_port *port)
1145 struct stliport *portp = container_of(port, struct stliport, port);
1146 struct stlibrd *brdp = stli_brds[portp->brdnr];
1147 stli_mkasysigs(&portp->asig, 1, 1);
1148 if (stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1149 sizeof(asysigs_t), 0) < 0)
1150 printk(KERN_WARNING "istallion: dtr raise failed.\n");
1154 /*****************************************************************************/
1157 * Write routine. Take the data and put it in the shared memory ring
1158 * queue. If port is not already sending chars then need to mark the
1159 * service bits for this port.
1162 static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count)
1164 cdkasy_t __iomem *ap;
1165 cdkhdr_t __iomem *hdrp;
1166 unsigned char __iomem *bits;
1167 unsigned char __iomem *shbuf;
1168 unsigned char *chbuf;
1169 struct stliport *portp;
1170 struct stlibrd *brdp;
1171 unsigned int len, stlen, head, tail, size;
1172 unsigned long flags;
1174 if (tty == stli_txcooktty)
1175 stli_flushchars(tty);
1176 portp = tty->driver_data;
1179 if (portp->brdnr >= stli_nrbrds)
1181 brdp = stli_brds[portp->brdnr];
1184 chbuf = (unsigned char *) buf;
1187 * All data is now local, shove as much as possible into shared memory.
1189 spin_lock_irqsave(&brd_lock, flags);
1191 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1192 head = (unsigned int) readw(&ap->txq.head);
1193 tail = (unsigned int) readw(&ap->txq.tail);
1194 if (tail != ((unsigned int) readw(&ap->txq.tail)))
1195 tail = (unsigned int) readw(&ap->txq.tail);
1196 size = portp->txsize;
1198 len = size - (head - tail) - 1;
1199 stlen = size - head;
1201 len = tail - head - 1;
1205 len = min(len, (unsigned int)count);
1207 shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset);
1210 stlen = min(len, stlen);
1211 memcpy_toio(shbuf + head, chbuf, stlen);
1222 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1223 writew(head, &ap->txq.head);
1224 if (test_bit(ST_TXBUSY, &portp->state)) {
1225 if (readl(&ap->changed.data) & DT_TXEMPTY)
1226 writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
1228 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1229 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1231 writeb(readb(bits) | portp->portbit, bits);
1232 set_bit(ST_TXBUSY, &portp->state);
1234 spin_unlock_irqrestore(&brd_lock, flags);
1239 /*****************************************************************************/
1242 * Output a single character. We put it into a temporary local buffer
1243 * (for speed) then write out that buffer when the flushchars routine
1244 * is called. There is a safety catch here so that if some other port
1245 * writes chars before the current buffer has been, then we write them
1246 * first them do the new ports.
1249 static int stli_putchar(struct tty_struct *tty, unsigned char ch)
1251 if (tty != stli_txcooktty) {
1252 if (stli_txcooktty != NULL)
1253 stli_flushchars(stli_txcooktty);
1254 stli_txcooktty = tty;
1257 stli_txcookbuf[stli_txcooksize++] = ch;
1261 /*****************************************************************************/
1264 * Transfer characters from the local TX cooking buffer to the board.
1265 * We sort of ignore the tty that gets passed in here. We rely on the
1266 * info stored with the TX cook buffer to tell us which port to flush
1267 * the data on. In any case we clean out the TX cook buffer, for re-use
1271 static void stli_flushchars(struct tty_struct *tty)
1273 cdkhdr_t __iomem *hdrp;
1274 unsigned char __iomem *bits;
1275 cdkasy_t __iomem *ap;
1276 struct tty_struct *cooktty;
1277 struct stliport *portp;
1278 struct stlibrd *brdp;
1279 unsigned int len, stlen, head, tail, size, count, cooksize;
1281 unsigned char __iomem *shbuf;
1282 unsigned long flags;
1284 cooksize = stli_txcooksize;
1285 cooktty = stli_txcooktty;
1286 stli_txcooksize = 0;
1287 stli_txcookrealsize = 0;
1288 stli_txcooktty = NULL;
1290 if (cooktty == NULL)
1297 portp = tty->driver_data;
1300 if (portp->brdnr >= stli_nrbrds)
1302 brdp = stli_brds[portp->brdnr];
1306 spin_lock_irqsave(&brd_lock, flags);
1309 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1310 head = (unsigned int) readw(&ap->txq.head);
1311 tail = (unsigned int) readw(&ap->txq.tail);
1312 if (tail != ((unsigned int) readw(&ap->txq.tail)))
1313 tail = (unsigned int) readw(&ap->txq.tail);
1314 size = portp->txsize;
1316 len = size - (head - tail) - 1;
1317 stlen = size - head;
1319 len = tail - head - 1;
1323 len = min(len, cooksize);
1325 shbuf = EBRDGETMEMPTR(brdp, portp->txoffset);
1326 buf = stli_txcookbuf;
1329 stlen = min(len, stlen);
1330 memcpy_toio(shbuf + head, buf, stlen);
1341 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1342 writew(head, &ap->txq.head);
1344 if (test_bit(ST_TXBUSY, &portp->state)) {
1345 if (readl(&ap->changed.data) & DT_TXEMPTY)
1346 writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
1348 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1349 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1351 writeb(readb(bits) | portp->portbit, bits);
1352 set_bit(ST_TXBUSY, &portp->state);
1355 spin_unlock_irqrestore(&brd_lock, flags);
1358 /*****************************************************************************/
1360 static int stli_writeroom(struct tty_struct *tty)
1362 cdkasyrq_t __iomem *rp;
1363 struct stliport *portp;
1364 struct stlibrd *brdp;
1365 unsigned int head, tail, len;
1366 unsigned long flags;
1368 if (tty == stli_txcooktty) {
1369 if (stli_txcookrealsize != 0) {
1370 len = stli_txcookrealsize - stli_txcooksize;
1375 portp = tty->driver_data;
1378 if (portp->brdnr >= stli_nrbrds)
1380 brdp = stli_brds[portp->brdnr];
1384 spin_lock_irqsave(&brd_lock, flags);
1386 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1387 head = (unsigned int) readw(&rp->head);
1388 tail = (unsigned int) readw(&rp->tail);
1389 if (tail != ((unsigned int) readw(&rp->tail)))
1390 tail = (unsigned int) readw(&rp->tail);
1391 len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head);
1394 spin_unlock_irqrestore(&brd_lock, flags);
1396 if (tty == stli_txcooktty) {
1397 stli_txcookrealsize = len;
1398 len -= stli_txcooksize;
1403 /*****************************************************************************/
1406 * Return the number of characters in the transmit buffer. Normally we
1407 * will return the number of chars in the shared memory ring queue.
1408 * We need to kludge around the case where the shared memory buffer is
1409 * empty but not all characters have drained yet, for this case just
1410 * return that there is 1 character in the buffer!
1413 static int stli_charsinbuffer(struct tty_struct *tty)
1415 cdkasyrq_t __iomem *rp;
1416 struct stliport *portp;
1417 struct stlibrd *brdp;
1418 unsigned int head, tail, len;
1419 unsigned long flags;
1421 if (tty == stli_txcooktty)
1422 stli_flushchars(tty);
1423 portp = tty->driver_data;
1426 if (portp->brdnr >= stli_nrbrds)
1428 brdp = stli_brds[portp->brdnr];
1432 spin_lock_irqsave(&brd_lock, flags);
1434 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1435 head = (unsigned int) readw(&rp->head);
1436 tail = (unsigned int) readw(&rp->tail);
1437 if (tail != ((unsigned int) readw(&rp->tail)))
1438 tail = (unsigned int) readw(&rp->tail);
1439 len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head));
1440 if ((len == 0) && test_bit(ST_TXBUSY, &portp->state))
1443 spin_unlock_irqrestore(&brd_lock, flags);
1448 /*****************************************************************************/
1451 * Generate the serial struct info.
1454 static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp)
1456 struct serial_struct sio;
1457 struct stlibrd *brdp;
1459 memset(&sio, 0, sizeof(struct serial_struct));
1460 sio.type = PORT_UNKNOWN;
1461 sio.line = portp->portnr;
1463 sio.flags = portp->port.flags;
1464 sio.baud_base = portp->baud_base;
1465 sio.close_delay = portp->port.close_delay;
1466 sio.closing_wait = portp->closing_wait;
1467 sio.custom_divisor = portp->custom_divisor;
1468 sio.xmit_fifo_size = 0;
1471 brdp = stli_brds[portp->brdnr];
1473 sio.port = brdp->iobase;
1475 return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ?
1479 /*****************************************************************************/
1482 * Set port according to the serial struct info.
1483 * At this point we do not do any auto-configure stuff, so we will
1484 * just quietly ignore any requests to change irq, etc.
1487 static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp)
1489 struct serial_struct sio;
1491 struct stliport *portp = tty->driver_data;
1493 if (copy_from_user(&sio, sp, sizeof(struct serial_struct)))
1495 if (!capable(CAP_SYS_ADMIN)) {
1496 if ((sio.baud_base != portp->baud_base) ||
1497 (sio.close_delay != portp->port.close_delay) ||
1498 ((sio.flags & ~ASYNC_USR_MASK) !=
1499 (portp->port.flags & ~ASYNC_USR_MASK)))
1503 portp->port.flags = (portp->port.flags & ~ASYNC_USR_MASK) |
1504 (sio.flags & ASYNC_USR_MASK);
1505 portp->baud_base = sio.baud_base;
1506 portp->port.close_delay = sio.close_delay;
1507 portp->closing_wait = sio.closing_wait;
1508 portp->custom_divisor = sio.custom_divisor;
1510 if ((rc = stli_setport(tty)) < 0)
1515 /*****************************************************************************/
1517 static int stli_tiocmget(struct tty_struct *tty, struct file *file)
1519 struct stliport *portp = tty->driver_data;
1520 struct stlibrd *brdp;
1525 if (portp->brdnr >= stli_nrbrds)
1527 brdp = stli_brds[portp->brdnr];
1530 if (tty->flags & (1 << TTY_IO_ERROR))
1533 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS,
1534 &portp->asig, sizeof(asysigs_t), 1)) < 0)
1537 return stli_mktiocm(portp->asig.sigvalue);
1540 static int stli_tiocmset(struct tty_struct *tty, struct file *file,
1541 unsigned int set, unsigned int clear)
1543 struct stliport *portp = tty->driver_data;
1544 struct stlibrd *brdp;
1545 int rts = -1, dtr = -1;
1549 if (portp->brdnr >= stli_nrbrds)
1551 brdp = stli_brds[portp->brdnr];
1554 if (tty->flags & (1 << TTY_IO_ERROR))
1557 if (set & TIOCM_RTS)
1559 if (set & TIOCM_DTR)
1561 if (clear & TIOCM_RTS)
1563 if (clear & TIOCM_DTR)
1566 stli_mkasysigs(&portp->asig, dtr, rts);
1568 return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1569 sizeof(asysigs_t), 0);
1572 static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg)
1574 struct stliport *portp;
1575 struct stlibrd *brdp;
1577 void __user *argp = (void __user *)arg;
1579 portp = tty->driver_data;
1582 if (portp->brdnr >= stli_nrbrds)
1584 brdp = stli_brds[portp->brdnr];
1588 if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
1589 (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) {
1590 if (tty->flags & (1 << TTY_IO_ERROR))
1598 rc = stli_getserial(portp, argp);
1601 rc = stli_setserial(tty, argp);
1604 rc = put_user(portp->pflag, (unsigned __user *)argp);
1607 if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0)
1610 case COM_GETPORTSTATS:
1611 rc = stli_getportstats(tty, portp, argp);
1613 case COM_CLRPORTSTATS:
1614 rc = stli_clrportstats(portp, argp);
1620 case TIOCSERGSTRUCT:
1621 case TIOCSERGETMULTI:
1622 case TIOCSERSETMULTI:
1631 /*****************************************************************************/
1634 * This routine assumes that we have user context and can sleep.
1635 * Looks like it is true for the current ttys implementation..!!
1638 static void stli_settermios(struct tty_struct *tty, struct ktermios *old)
1640 struct stliport *portp;
1641 struct stlibrd *brdp;
1642 struct ktermios *tiosp;
1645 portp = tty->driver_data;
1648 if (portp->brdnr >= stli_nrbrds)
1650 brdp = stli_brds[portp->brdnr];
1654 tiosp = tty->termios;
1656 stli_mkasyport(tty, portp, &aport, tiosp);
1657 stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0);
1658 stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1);
1659 stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1660 sizeof(asysigs_t), 0);
1661 if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0))
1662 tty->hw_stopped = 0;
1663 if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL))
1664 wake_up_interruptible(&portp->port.open_wait);
1667 /*****************************************************************************/
1670 * Attempt to flow control who ever is sending us data. We won't really
1671 * do any flow control action here. We can't directly, and even if we
1672 * wanted to we would have to send a command to the slave. The slave
1673 * knows how to flow control, and will do so when its buffers reach its
1674 * internal high water marks. So what we will do is set a local state
1675 * bit that will stop us sending any RX data up from the poll routine
1676 * (which is the place where RX data from the slave is handled).
1679 static void stli_throttle(struct tty_struct *tty)
1681 struct stliport *portp = tty->driver_data;
1684 set_bit(ST_RXSTOP, &portp->state);
1687 /*****************************************************************************/
1690 * Unflow control the device sending us data... That means that all
1691 * we have to do is clear the RXSTOP state bit. The next poll call
1692 * will then be able to pass the RX data back up.
1695 static void stli_unthrottle(struct tty_struct *tty)
1697 struct stliport *portp = tty->driver_data;
1700 clear_bit(ST_RXSTOP, &portp->state);
1703 /*****************************************************************************/
1706 * Stop the transmitter.
1709 static void stli_stop(struct tty_struct *tty)
1713 /*****************************************************************************/
1716 * Start the transmitter again.
1719 static void stli_start(struct tty_struct *tty)
1723 /*****************************************************************************/
1726 * Hangup this port. This is pretty much like closing the port, only
1727 * a little more brutal. No waiting for data to drain. Shutdown the
1728 * port and maybe drop signals. This is rather tricky really. We want
1729 * to close the port as well.
1732 static void stli_hangup(struct tty_struct *tty)
1734 struct stliport *portp;
1735 struct stlibrd *brdp;
1736 struct tty_port *port;
1737 unsigned long flags;
1739 portp = tty->driver_data;
1742 if (portp->brdnr >= stli_nrbrds)
1744 brdp = stli_brds[portp->brdnr];
1747 port = &portp->port;
1749 spin_lock_irqsave(&port->lock, flags);
1750 port->flags &= ~ASYNC_INITIALIZED;
1751 spin_unlock_irqrestore(&port->lock, flags);
1753 if (!test_bit(ST_CLOSING, &portp->state))
1754 stli_rawclose(brdp, portp, 0, 0);
1756 spin_lock_irqsave(&stli_lock, flags);
1757 if (tty->termios->c_cflag & HUPCL) {
1758 stli_mkasysigs(&portp->asig, 0, 0);
1759 if (test_bit(ST_CMDING, &portp->state)) {
1760 set_bit(ST_DOSIGS, &portp->state);
1761 set_bit(ST_DOFLUSHTX, &portp->state);
1762 set_bit(ST_DOFLUSHRX, &portp->state);
1764 stli_sendcmd(brdp, portp, A_SETSIGNALSF,
1765 &portp->asig, sizeof(asysigs_t), 0);
1769 clear_bit(ST_TXBUSY, &portp->state);
1770 clear_bit(ST_RXSTOP, &portp->state);
1771 set_bit(TTY_IO_ERROR, &tty->flags);
1772 spin_unlock_irqrestore(&stli_lock, flags);
1774 tty_port_hangup(port);
1777 /*****************************************************************************/
1780 * Flush characters from the lower buffer. We may not have user context
1781 * so we cannot sleep waiting for it to complete. Also we need to check
1782 * if there is chars for this port in the TX cook buffer, and flush them
1786 static void stli_flushbuffer(struct tty_struct *tty)
1788 struct stliport *portp;
1789 struct stlibrd *brdp;
1790 unsigned long ftype, flags;
1792 portp = tty->driver_data;
1795 if (portp->brdnr >= stli_nrbrds)
1797 brdp = stli_brds[portp->brdnr];
1801 spin_lock_irqsave(&brd_lock, flags);
1802 if (tty == stli_txcooktty) {
1803 stli_txcooktty = NULL;
1804 stli_txcooksize = 0;
1805 stli_txcookrealsize = 0;
1807 if (test_bit(ST_CMDING, &portp->state)) {
1808 set_bit(ST_DOFLUSHTX, &portp->state);
1811 if (test_bit(ST_DOFLUSHRX, &portp->state)) {
1813 clear_bit(ST_DOFLUSHRX, &portp->state);
1815 __stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0);
1817 spin_unlock_irqrestore(&brd_lock, flags);
1821 /*****************************************************************************/
1823 static int stli_breakctl(struct tty_struct *tty, int state)
1825 struct stlibrd *brdp;
1826 struct stliport *portp;
1829 portp = tty->driver_data;
1832 if (portp->brdnr >= stli_nrbrds)
1834 brdp = stli_brds[portp->brdnr];
1838 arg = (state == -1) ? BREAKON : BREAKOFF;
1839 stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0);
1843 /*****************************************************************************/
1845 static void stli_waituntilsent(struct tty_struct *tty, int timeout)
1847 struct stliport *portp;
1850 portp = tty->driver_data;
1856 tend = jiffies + timeout;
1858 while (test_bit(ST_TXBUSY, &portp->state)) {
1859 if (signal_pending(current))
1861 msleep_interruptible(20);
1862 if (time_after_eq(jiffies, tend))
1867 /*****************************************************************************/
1869 static void stli_sendxchar(struct tty_struct *tty, char ch)
1871 struct stlibrd *brdp;
1872 struct stliport *portp;
1875 portp = tty->driver_data;
1878 if (portp->brdnr >= stli_nrbrds)
1880 brdp = stli_brds[portp->brdnr];
1884 memset(&actrl, 0, sizeof(asyctrl_t));
1885 if (ch == STOP_CHAR(tty)) {
1886 actrl.rxctrl = CT_STOPFLOW;
1887 } else if (ch == START_CHAR(tty)) {
1888 actrl.rxctrl = CT_STARTFLOW;
1890 actrl.txctrl = CT_SENDCHR;
1893 stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
1896 /*****************************************************************************/
1901 * Format info for a specified port. The line is deliberately limited
1902 * to 80 characters. (If it is too long it will be truncated, if too
1903 * short then padded with spaces).
1906 static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos)
1911 rc = stli_portcmdstats(NULL, portp);
1914 if (brdp->state & BST_STARTED) {
1915 switch (stli_comstats.hwid) {
1916 case 0: uart = "2681"; break;
1917 case 1: uart = "SC26198"; break;
1918 default:uart = "CD1400"; break;
1923 sp += sprintf(sp, "%d: uart:%s ", portnr, uart);
1925 if ((brdp->state & BST_STARTED) && (rc >= 0)) {
1926 sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal,
1927 (int) stli_comstats.rxtotal);
1929 if (stli_comstats.rxframing)
1930 sp += sprintf(sp, " fe:%d",
1931 (int) stli_comstats.rxframing);
1932 if (stli_comstats.rxparity)
1933 sp += sprintf(sp, " pe:%d",
1934 (int) stli_comstats.rxparity);
1935 if (stli_comstats.rxbreaks)
1936 sp += sprintf(sp, " brk:%d",
1937 (int) stli_comstats.rxbreaks);
1938 if (stli_comstats.rxoverrun)
1939 sp += sprintf(sp, " oe:%d",
1940 (int) stli_comstats.rxoverrun);
1942 cnt = sprintf(sp, "%s%s%s%s%s ",
1943 (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "",
1944 (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "",
1945 (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "",
1946 (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "",
1947 (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : "");
1952 for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++)
1955 pos[(MAXLINE - 2)] = '+';
1956 pos[(MAXLINE - 1)] = '\n';
1961 /*****************************************************************************/
1964 * Port info, read from the /proc file system.
1967 static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data)
1969 struct stlibrd *brdp;
1970 struct stliport *portp;
1971 unsigned int brdnr, portnr, totalport;
1980 pos += sprintf(pos, "%s: version %s", stli_drvtitle,
1982 while (pos < (page + MAXLINE - 1))
1989 * We scan through for each board, panel and port. The offset is
1990 * calculated on the fly, and irrelevant ports are skipped.
1992 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
1993 brdp = stli_brds[brdnr];
1996 if (brdp->state == 0)
1999 maxoff = curoff + (brdp->nrports * MAXLINE);
2000 if (off >= maxoff) {
2005 totalport = brdnr * STL_MAXPORTS;
2006 for (portnr = 0; (portnr < brdp->nrports); portnr++,
2008 portp = brdp->ports[portnr];
2011 if (off >= (curoff += MAXLINE))
2013 if ((pos - page + MAXLINE) > count)
2015 pos += stli_portinfo(brdp, portp, totalport, pos);
2026 /*****************************************************************************/
2029 * Generic send command routine. This will send a message to the slave,
2030 * of the specified type with the specified argument. Must be very
2031 * careful of data that will be copied out from shared memory -
2032 * containing command results. The command completion is all done from
2033 * a poll routine that does not have user context. Therefore you cannot
2034 * copy back directly into user space, or to the kernel stack of a
2035 * process. This routine does not sleep, so can be called from anywhere.
2037 * The caller must hold the brd_lock (see also stli_sendcmd the usual
2041 static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
2043 cdkhdr_t __iomem *hdrp;
2044 cdkctrl_t __iomem *cp;
2045 unsigned char __iomem *bits;
2047 if (test_bit(ST_CMDING, &portp->state)) {
2048 printk(KERN_ERR "istallion: command already busy, cmd=%x!\n",
2054 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
2056 memcpy_toio((void __iomem *) &(cp->args[0]), arg, size);
2059 portp->argsize = size;
2062 writel(0, &cp->status);
2063 writel(cmd, &cp->cmd);
2064 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2065 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
2067 writeb(readb(bits) | portp->portbit, bits);
2068 set_bit(ST_CMDING, &portp->state);
2072 static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
2074 unsigned long flags;
2076 spin_lock_irqsave(&brd_lock, flags);
2077 __stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
2078 spin_unlock_irqrestore(&brd_lock, flags);
2081 /*****************************************************************************/
2084 * Read data from shared memory. This assumes that the shared memory
2085 * is enabled and that interrupts are off. Basically we just empty out
2086 * the shared memory buffer into the tty buffer. Must be careful to
2087 * handle the case where we fill up the tty buffer, but still have
2088 * more chars to unload.
2091 static void stli_read(struct stlibrd *brdp, struct stliport *portp)
2093 cdkasyrq_t __iomem *rp;
2094 char __iomem *shbuf;
2095 struct tty_struct *tty;
2096 unsigned int head, tail, size;
2097 unsigned int len, stlen;
2099 if (test_bit(ST_RXSTOP, &portp->state))
2101 tty = tty_port_tty_get(&portp->port);
2105 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2106 head = (unsigned int) readw(&rp->head);
2107 if (head != ((unsigned int) readw(&rp->head)))
2108 head = (unsigned int) readw(&rp->head);
2109 tail = (unsigned int) readw(&rp->tail);
2110 size = portp->rxsize;
2115 len = size - (tail - head);
2116 stlen = size - tail;
2119 len = tty_buffer_request_room(tty, len);
2121 shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset);
2124 unsigned char *cptr;
2126 stlen = min(len, stlen);
2127 tty_prepare_flip_string(tty, &cptr, stlen);
2128 memcpy_fromio(cptr, shbuf + tail, stlen);
2136 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2137 writew(tail, &rp->tail);
2140 set_bit(ST_RXING, &portp->state);
2142 tty_schedule_flip(tty);
2146 /*****************************************************************************/
2149 * Set up and carry out any delayed commands. There is only a small set
2150 * of slave commands that can be done "off-level". So it is not too
2151 * difficult to deal with them here.
2154 static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp)
2158 if (test_bit(ST_DOSIGS, &portp->state)) {
2159 if (test_bit(ST_DOFLUSHTX, &portp->state) &&
2160 test_bit(ST_DOFLUSHRX, &portp->state))
2161 cmd = A_SETSIGNALSF;
2162 else if (test_bit(ST_DOFLUSHTX, &portp->state))
2163 cmd = A_SETSIGNALSFTX;
2164 else if (test_bit(ST_DOFLUSHRX, &portp->state))
2165 cmd = A_SETSIGNALSFRX;
2168 clear_bit(ST_DOFLUSHTX, &portp->state);
2169 clear_bit(ST_DOFLUSHRX, &portp->state);
2170 clear_bit(ST_DOSIGS, &portp->state);
2171 memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig,
2173 writel(0, &cp->status);
2174 writel(cmd, &cp->cmd);
2175 set_bit(ST_CMDING, &portp->state);
2176 } else if (test_bit(ST_DOFLUSHTX, &portp->state) ||
2177 test_bit(ST_DOFLUSHRX, &portp->state)) {
2178 cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0);
2179 cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0);
2180 clear_bit(ST_DOFLUSHTX, &portp->state);
2181 clear_bit(ST_DOFLUSHRX, &portp->state);
2182 memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int));
2183 writel(0, &cp->status);
2184 writel(A_FLUSH, &cp->cmd);
2185 set_bit(ST_CMDING, &portp->state);
2189 /*****************************************************************************/
2192 * Host command service checking. This handles commands or messages
2193 * coming from the slave to the host. Must have board shared memory
2194 * enabled and interrupts off when called. Notice that by servicing the
2195 * read data last we don't need to change the shared memory pointer
2196 * during processing (which is a slow IO operation).
2197 * Return value indicates if this port is still awaiting actions from
2198 * the slave (like open, command, or even TX data being sent). If 0
2199 * then port is still busy, otherwise no longer busy.
2202 static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp)
2204 cdkasy_t __iomem *ap;
2205 cdkctrl_t __iomem *cp;
2206 struct tty_struct *tty;
2208 unsigned long oldsigs;
2211 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
2215 * Check if we are waiting for an open completion message.
2217 if (test_bit(ST_OPENING, &portp->state)) {
2218 rc = readl(&cp->openarg);
2219 if (readb(&cp->open) == 0 && rc != 0) {
2222 writel(0, &cp->openarg);
2224 clear_bit(ST_OPENING, &portp->state);
2225 wake_up_interruptible(&portp->raw_wait);
2230 * Check if we are waiting for a close completion message.
2232 if (test_bit(ST_CLOSING, &portp->state)) {
2233 rc = (int) readl(&cp->closearg);
2234 if (readb(&cp->close) == 0 && rc != 0) {
2237 writel(0, &cp->closearg);
2239 clear_bit(ST_CLOSING, &portp->state);
2240 wake_up_interruptible(&portp->raw_wait);
2245 * Check if we are waiting for a command completion message. We may
2246 * need to copy out the command results associated with this command.
2248 if (test_bit(ST_CMDING, &portp->state)) {
2249 rc = readl(&cp->status);
2250 if (readl(&cp->cmd) == 0 && rc != 0) {
2253 if (portp->argp != NULL) {
2254 memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]),
2258 writel(0, &cp->status);
2260 clear_bit(ST_CMDING, &portp->state);
2261 stli_dodelaycmd(portp, cp);
2262 wake_up_interruptible(&portp->raw_wait);
2267 * Check for any notification messages ready. This includes lots of
2268 * different types of events - RX chars ready, RX break received,
2269 * TX data low or empty in the slave, modem signals changed state.
2276 tty = tty_port_tty_get(&portp->port);
2278 if (nt.signal & SG_DCD) {
2279 oldsigs = portp->sigs;
2280 portp->sigs = stli_mktiocm(nt.sigvalue);
2281 clear_bit(ST_GETSIGS, &portp->state);
2282 if ((portp->sigs & TIOCM_CD) &&
2283 ((oldsigs & TIOCM_CD) == 0))
2284 wake_up_interruptible(&portp->port.open_wait);
2285 if ((oldsigs & TIOCM_CD) &&
2286 ((portp->sigs & TIOCM_CD) == 0)) {
2287 if (portp->port.flags & ASYNC_CHECK_CD) {
2294 if (nt.data & DT_TXEMPTY)
2295 clear_bit(ST_TXBUSY, &portp->state);
2296 if (nt.data & (DT_TXEMPTY | DT_TXLOW)) {
2303 if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) {
2305 tty_insert_flip_char(tty, 0, TTY_BREAK);
2306 if (portp->port.flags & ASYNC_SAK) {
2310 tty_schedule_flip(tty);
2315 if (nt.data & DT_RXBUSY) {
2317 stli_read(brdp, portp);
2322 * It might seem odd that we are checking for more RX chars here.
2323 * But, we need to handle the case where the tty buffer was previously
2324 * filled, but we had more characters to pass up. The slave will not
2325 * send any more RX notify messages until the RX buffer has been emptied.
2326 * But it will leave the service bits on (since the buffer is not empty).
2327 * So from here we can try to process more RX chars.
2329 if ((!donerx) && test_bit(ST_RXING, &portp->state)) {
2330 clear_bit(ST_RXING, &portp->state);
2331 stli_read(brdp, portp);
2334 return((test_bit(ST_OPENING, &portp->state) ||
2335 test_bit(ST_CLOSING, &portp->state) ||
2336 test_bit(ST_CMDING, &portp->state) ||
2337 test_bit(ST_TXBUSY, &portp->state) ||
2338 test_bit(ST_RXING, &portp->state)) ? 0 : 1);
2341 /*****************************************************************************/
2344 * Service all ports on a particular board. Assumes that the boards
2345 * shared memory is enabled, and that the page pointer is pointed
2346 * at the cdk header structure.
2349 static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp)
2351 struct stliport *portp;
2352 unsigned char hostbits[(STL_MAXCHANS / 8) + 1];
2353 unsigned char slavebits[(STL_MAXCHANS / 8) + 1];
2354 unsigned char __iomem *slavep;
2355 int bitpos, bitat, bitsize;
2356 int channr, nrdevs, slavebitchange;
2358 bitsize = brdp->bitsize;
2359 nrdevs = brdp->nrdevs;
2362 * Check if slave wants any service. Basically we try to do as
2363 * little work as possible here. There are 2 levels of service
2364 * bits. So if there is nothing to do we bail early. We check
2365 * 8 service bits at a time in the inner loop, so we can bypass
2366 * the lot if none of them want service.
2368 memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset),
2371 memset(&slavebits[0], 0, bitsize);
2374 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2375 if (hostbits[bitpos] == 0)
2377 channr = bitpos * 8;
2378 for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) {
2379 if (hostbits[bitpos] & bitat) {
2380 portp = brdp->ports[(channr - 1)];
2381 if (stli_hostcmd(brdp, portp)) {
2383 slavebits[bitpos] |= bitat;
2390 * If any of the ports are no longer busy then update them in the
2391 * slave request bits. We need to do this after, since a host port
2392 * service may initiate more slave requests.
2394 if (slavebitchange) {
2395 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2396 slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset;
2397 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2398 if (readb(slavebits + bitpos))
2399 writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos);
2404 /*****************************************************************************/
2407 * Driver poll routine. This routine polls the boards in use and passes
2408 * messages back up to host when necessary. This is actually very
2409 * CPU efficient, since we will always have the kernel poll clock, it
2410 * adds only a few cycles when idle (since board service can be
2411 * determined very easily), but when loaded generates no interrupts
2412 * (with their expensive associated context change).
2415 static void stli_poll(unsigned long arg)
2417 cdkhdr_t __iomem *hdrp;
2418 struct stlibrd *brdp;
2421 mod_timer(&stli_timerlist, STLI_TIMEOUT);
2424 * Check each board and do any servicing required.
2426 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
2427 brdp = stli_brds[brdnr];
2430 if ((brdp->state & BST_STARTED) == 0)
2433 spin_lock(&brd_lock);
2435 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2436 if (readb(&hdrp->hostreq))
2437 stli_brdpoll(brdp, hdrp);
2439 spin_unlock(&brd_lock);
2443 /*****************************************************************************/
2446 * Translate the termios settings into the port setting structure of
2450 static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp,
2451 asyport_t *pp, struct ktermios *tiosp)
2453 memset(pp, 0, sizeof(asyport_t));
2456 * Start of by setting the baud, char size, parity and stop bit info.
2458 pp->baudout = tty_get_baud_rate(tty);
2459 if ((tiosp->c_cflag & CBAUD) == B38400) {
2460 if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
2461 pp->baudout = 57600;
2462 else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
2463 pp->baudout = 115200;
2464 else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
2465 pp->baudout = 230400;
2466 else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
2467 pp->baudout = 460800;
2468 else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)
2469 pp->baudout = (portp->baud_base / portp->custom_divisor);
2471 if (pp->baudout > STL_MAXBAUD)
2472 pp->baudout = STL_MAXBAUD;
2473 pp->baudin = pp->baudout;
2475 switch (tiosp->c_cflag & CSIZE) {
2490 if (tiosp->c_cflag & CSTOPB)
2491 pp->stopbs = PT_STOP2;
2493 pp->stopbs = PT_STOP1;
2495 if (tiosp->c_cflag & PARENB) {
2496 if (tiosp->c_cflag & PARODD)
2497 pp->parity = PT_ODDPARITY;
2499 pp->parity = PT_EVENPARITY;
2501 pp->parity = PT_NOPARITY;
2505 * Set up any flow control options enabled.
2507 if (tiosp->c_iflag & IXON) {
2509 if (tiosp->c_iflag & IXANY)
2510 pp->flow |= F_IXANY;
2512 if (tiosp->c_cflag & CRTSCTS)
2513 pp->flow |= (F_RTSFLOW | F_CTSFLOW);
2515 pp->startin = tiosp->c_cc[VSTART];
2516 pp->stopin = tiosp->c_cc[VSTOP];
2517 pp->startout = tiosp->c_cc[VSTART];
2518 pp->stopout = tiosp->c_cc[VSTOP];
2521 * Set up the RX char marking mask with those RX error types we must
2522 * catch. We can get the slave to help us out a little here, it will
2523 * ignore parity errors and breaks for us, and mark parity errors in
2526 if (tiosp->c_iflag & IGNPAR)
2527 pp->iflag |= FI_IGNRXERRS;
2528 if (tiosp->c_iflag & IGNBRK)
2529 pp->iflag |= FI_IGNBREAK;
2531 portp->rxmarkmsk = 0;
2532 if (tiosp->c_iflag & (INPCK | PARMRK))
2533 pp->iflag |= FI_1MARKRXERRS;
2534 if (tiosp->c_iflag & BRKINT)
2535 portp->rxmarkmsk |= BRKINT;
2538 * Set up clocal processing as required.
2540 if (tiosp->c_cflag & CLOCAL)
2541 portp->port.flags &= ~ASYNC_CHECK_CD;
2543 portp->port.flags |= ASYNC_CHECK_CD;
2546 * Transfer any persistent flags into the asyport structure.
2548 pp->pflag = (portp->pflag & 0xffff);
2549 pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0;
2550 pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0;
2551 pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0;
2554 /*****************************************************************************/
2557 * Construct a slave signals structure for setting the DTR and RTS
2558 * signals as specified.
2561 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts)
2563 memset(sp, 0, sizeof(asysigs_t));
2565 sp->signal |= SG_DTR;
2566 sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0);
2569 sp->signal |= SG_RTS;
2570 sp->sigvalue |= ((rts > 0) ? SG_RTS : 0);
2574 /*****************************************************************************/
2577 * Convert the signals returned from the slave into a local TIOCM type
2578 * signals value. We keep them locally in TIOCM format.
2581 static long stli_mktiocm(unsigned long sigvalue)
2584 tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0);
2585 tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0);
2586 tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0);
2587 tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0);
2588 tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0);
2589 tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0);
2593 /*****************************************************************************/
2596 * All panels and ports actually attached have been worked out. All
2597 * we need to do here is set up the appropriate per port data structures.
2600 static int stli_initports(struct stlibrd *brdp)
2602 struct stliport *portp;
2603 unsigned int i, panelnr, panelport;
2605 for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) {
2606 portp = kzalloc(sizeof(struct stliport), GFP_KERNEL);
2608 printk(KERN_WARNING "istallion: failed to allocate port structure\n");
2611 tty_port_init(&portp->port);
2612 portp->port.ops = &stli_port_ops;
2613 portp->magic = STLI_PORTMAGIC;
2615 portp->brdnr = brdp->brdnr;
2616 portp->panelnr = panelnr;
2617 portp->baud_base = STL_BAUDBASE;
2618 portp->port.close_delay = STL_CLOSEDELAY;
2619 portp->closing_wait = 30 * HZ;
2620 init_waitqueue_head(&portp->port.open_wait);
2621 init_waitqueue_head(&portp->port.close_wait);
2622 init_waitqueue_head(&portp->raw_wait);
2624 if (panelport >= brdp->panels[panelnr]) {
2628 brdp->ports[i] = portp;
2634 /*****************************************************************************/
2637 * All the following routines are board specific hardware operations.
2640 static void stli_ecpinit(struct stlibrd *brdp)
2642 unsigned long memconf;
2644 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
2646 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2649 memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT;
2650 outb(memconf, (brdp->iobase + ECP_ATMEMAR));
2653 /*****************************************************************************/
2655 static void stli_ecpenable(struct stlibrd *brdp)
2657 outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR));
2660 /*****************************************************************************/
2662 static void stli_ecpdisable(struct stlibrd *brdp)
2664 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2667 /*****************************************************************************/
2669 static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2674 if (offset > brdp->memsize) {
2675 printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2676 "range at line=%d(%d), brd=%d\n",
2677 (int) offset, line, __LINE__, brdp->brdnr);
2681 ptr = brdp->membase + (offset % ECP_ATPAGESIZE);
2682 val = (unsigned char) (offset / ECP_ATPAGESIZE);
2684 outb(val, (brdp->iobase + ECP_ATMEMPR));
2688 /*****************************************************************************/
2690 static void stli_ecpreset(struct stlibrd *brdp)
2692 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
2694 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2698 /*****************************************************************************/
2700 static void stli_ecpintr(struct stlibrd *brdp)
2702 outb(0x1, brdp->iobase);
2705 /*****************************************************************************/
2708 * The following set of functions act on ECP EISA boards.
2711 static void stli_ecpeiinit(struct stlibrd *brdp)
2713 unsigned long memconf;
2715 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
2716 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
2718 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2721 memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL;
2722 outb(memconf, (brdp->iobase + ECP_EIMEMARL));
2723 memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH;
2724 outb(memconf, (brdp->iobase + ECP_EIMEMARH));
2727 /*****************************************************************************/
2729 static void stli_ecpeienable(struct stlibrd *brdp)
2731 outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR));
2734 /*****************************************************************************/
2736 static void stli_ecpeidisable(struct stlibrd *brdp)
2738 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2741 /*****************************************************************************/
2743 static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2748 if (offset > brdp->memsize) {
2749 printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2750 "range at line=%d(%d), brd=%d\n",
2751 (int) offset, line, __LINE__, brdp->brdnr);
2755 ptr = brdp->membase + (offset % ECP_EIPAGESIZE);
2756 if (offset < ECP_EIPAGESIZE)
2759 val = ECP_EIENABLE | 0x40;
2761 outb(val, (brdp->iobase + ECP_EICONFR));
2765 /*****************************************************************************/
2767 static void stli_ecpeireset(struct stlibrd *brdp)
2769 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
2771 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2775 /*****************************************************************************/
2778 * The following set of functions act on ECP MCA boards.
2781 static void stli_ecpmcenable(struct stlibrd *brdp)
2783 outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR));
2786 /*****************************************************************************/
2788 static void stli_ecpmcdisable(struct stlibrd *brdp)
2790 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
2793 /*****************************************************************************/
2795 static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2800 if (offset > brdp->memsize) {
2801 printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2802 "range at line=%d(%d), brd=%d\n",
2803 (int) offset, line, __LINE__, brdp->brdnr);
2807 ptr = brdp->membase + (offset % ECP_MCPAGESIZE);
2808 val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE;
2810 outb(val, (brdp->iobase + ECP_MCCONFR));
2814 /*****************************************************************************/
2816 static void stli_ecpmcreset(struct stlibrd *brdp)
2818 outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR));
2820 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
2824 /*****************************************************************************/
2827 * The following set of functions act on ECP PCI boards.
2830 static void stli_ecppciinit(struct stlibrd *brdp)
2832 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
2834 outb(0, (brdp->iobase + ECP_PCICONFR));
2838 /*****************************************************************************/
2840 static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2845 if (offset > brdp->memsize) {
2846 printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2847 "range at line=%d(%d), board=%d\n",
2848 (int) offset, line, __LINE__, brdp->brdnr);
2852 ptr = brdp->membase + (offset % ECP_PCIPAGESIZE);
2853 val = (offset / ECP_PCIPAGESIZE) << 1;
2855 outb(val, (brdp->iobase + ECP_PCICONFR));
2859 /*****************************************************************************/
2861 static void stli_ecppcireset(struct stlibrd *brdp)
2863 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
2865 outb(0, (brdp->iobase + ECP_PCICONFR));
2869 /*****************************************************************************/
2872 * The following routines act on ONboards.
2875 static void stli_onbinit(struct stlibrd *brdp)
2877 unsigned long memconf;
2879 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
2881 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
2884 memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT;
2885 outb(memconf, (brdp->iobase + ONB_ATMEMAR));
2886 outb(0x1, brdp->iobase);
2890 /*****************************************************************************/
2892 static void stli_onbenable(struct stlibrd *brdp)
2894 outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR));
2897 /*****************************************************************************/
2899 static void stli_onbdisable(struct stlibrd *brdp)
2901 outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR));
2904 /*****************************************************************************/
2906 static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2910 if (offset > brdp->memsize) {
2911 printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2912 "range at line=%d(%d), brd=%d\n",
2913 (int) offset, line, __LINE__, brdp->brdnr);
2916 ptr = brdp->membase + (offset % ONB_ATPAGESIZE);
2921 /*****************************************************************************/
2923 static void stli_onbreset(struct stlibrd *brdp)
2925 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
2927 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
2931 /*****************************************************************************/
2934 * The following routines act on ONboard EISA.
2937 static void stli_onbeinit(struct stlibrd *brdp)
2939 unsigned long memconf;
2941 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
2942 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
2944 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
2947 memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL;
2948 outb(memconf, (brdp->iobase + ONB_EIMEMARL));
2949 memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH;
2950 outb(memconf, (brdp->iobase + ONB_EIMEMARH));
2951 outb(0x1, brdp->iobase);
2955 /*****************************************************************************/
2957 static void stli_onbeenable(struct stlibrd *brdp)
2959 outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR));
2962 /*****************************************************************************/
2964 static void stli_onbedisable(struct stlibrd *brdp)
2966 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
2969 /*****************************************************************************/
2971 static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2976 if (offset > brdp->memsize) {
2977 printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2978 "range at line=%d(%d), brd=%d\n",
2979 (int) offset, line, __LINE__, brdp->brdnr);
2983 ptr = brdp->membase + (offset % ONB_EIPAGESIZE);
2984 if (offset < ONB_EIPAGESIZE)
2987 val = ONB_EIENABLE | 0x40;
2989 outb(val, (brdp->iobase + ONB_EICONFR));
2993 /*****************************************************************************/
2995 static void stli_onbereset(struct stlibrd *brdp)
2997 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
2999 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3003 /*****************************************************************************/
3006 * The following routines act on Brumby boards.
3009 static void stli_bbyinit(struct stlibrd *brdp)
3011 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
3013 outb(0, (brdp->iobase + BBY_ATCONFR));
3015 outb(0x1, brdp->iobase);
3019 /*****************************************************************************/
3021 static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
3026 BUG_ON(offset > brdp->memsize);
3028 ptr = brdp->membase + (offset % BBY_PAGESIZE);
3029 val = (unsigned char) (offset / BBY_PAGESIZE);
3030 outb(val, (brdp->iobase + BBY_ATCONFR));
3034 /*****************************************************************************/
3036 static void stli_bbyreset(struct stlibrd *brdp)
3038 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
3040 outb(0, (brdp->iobase + BBY_ATCONFR));
3044 /*****************************************************************************/
3047 * The following routines act on original old Stallion boards.
3050 static void stli_stalinit(struct stlibrd *brdp)
3052 outb(0x1, brdp->iobase);
3056 /*****************************************************************************/
3058 static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
3060 BUG_ON(offset > brdp->memsize);
3061 return brdp->membase + (offset % STAL_PAGESIZE);
3064 /*****************************************************************************/
3066 static void stli_stalreset(struct stlibrd *brdp)
3070 vecp = (u32 __iomem *) (brdp->membase + 0x30);
3071 writel(0xffff0000, vecp);
3072 outb(0, brdp->iobase);
3076 /*****************************************************************************/
3079 * Try to find an ECP board and initialize it. This handles only ECP
3083 static int stli_initecp(struct stlibrd *brdp)
3086 cdkecpsig_t __iomem *sigsp;
3087 unsigned int status, nxtid;
3089 int retval, panelnr, nrports;
3091 if ((brdp->iobase == 0) || (brdp->memaddr == 0)) {
3096 brdp->iosize = ECP_IOSIZE;
3098 if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
3104 * Based on the specific board type setup the common vars to access
3105 * and enable shared memory. Set all board specific information now
3108 switch (brdp->brdtype) {
3110 brdp->memsize = ECP_MEMSIZE;
3111 brdp->pagesize = ECP_ATPAGESIZE;
3112 brdp->init = stli_ecpinit;
3113 brdp->enable = stli_ecpenable;
3114 brdp->reenable = stli_ecpenable;
3115 brdp->disable = stli_ecpdisable;
3116 brdp->getmemptr = stli_ecpgetmemptr;
3117 brdp->intr = stli_ecpintr;
3118 brdp->reset = stli_ecpreset;
3119 name = "serial(EC8/64)";
3123 brdp->memsize = ECP_MEMSIZE;
3124 brdp->pagesize = ECP_EIPAGESIZE;
3125 brdp->init = stli_ecpeiinit;
3126 brdp->enable = stli_ecpeienable;
3127 brdp->reenable = stli_ecpeienable;
3128 brdp->disable = stli_ecpeidisable;
3129 brdp->getmemptr = stli_ecpeigetmemptr;
3130 brdp->intr = stli_ecpintr;
3131 brdp->reset = stli_ecpeireset;
3132 name = "serial(EC8/64-EI)";
3136 brdp->memsize = ECP_MEMSIZE;
3137 brdp->pagesize = ECP_MCPAGESIZE;
3139 brdp->enable = stli_ecpmcenable;
3140 brdp->reenable = stli_ecpmcenable;
3141 brdp->disable = stli_ecpmcdisable;
3142 brdp->getmemptr = stli_ecpmcgetmemptr;
3143 brdp->intr = stli_ecpintr;
3144 brdp->reset = stli_ecpmcreset;
3145 name = "serial(EC8/64-MCA)";
3149 brdp->memsize = ECP_PCIMEMSIZE;
3150 brdp->pagesize = ECP_PCIPAGESIZE;
3151 brdp->init = stli_ecppciinit;
3152 brdp->enable = NULL;
3153 brdp->reenable = NULL;
3154 brdp->disable = NULL;
3155 brdp->getmemptr = stli_ecppcigetmemptr;
3156 brdp->intr = stli_ecpintr;
3157 brdp->reset = stli_ecppcireset;
3158 name = "serial(EC/RA-PCI)";
3167 * The per-board operations structure is all set up, so now let's go
3168 * and get the board operational. Firstly initialize board configuration
3169 * registers. Set the memory mapping info so we can get at the boards
3174 brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize);
3175 if (brdp->membase == NULL) {
3181 * Now that all specific code is set up, enable the shared memory and
3182 * look for the a signature area that will tell us exactly what board
3183 * this is, and what it is connected to it.
3186 sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3187 memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t));
3190 if (sig.magic != cpu_to_le32(ECP_MAGIC)) {
3196 * Scan through the signature looking at the panels connected to the
3197 * board. Calculate the total number of ports as we go.
3199 for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) {
3200 status = sig.panelid[nxtid];
3201 if ((status & ECH_PNLIDMASK) != nxtid)
3204 brdp->panelids[panelnr] = status;
3205 nrports = (status & ECH_PNL16PORT) ? 16 : 8;
3206 if ((nrports == 16) && ((status & ECH_PNLXPID) == 0))
3208 brdp->panels[panelnr] = nrports;
3209 brdp->nrports += nrports;
3215 brdp->state |= BST_FOUND;
3218 iounmap(brdp->membase);
3219 brdp->membase = NULL;
3221 release_region(brdp->iobase, brdp->iosize);
3226 /*****************************************************************************/
3229 * Try to find an ONboard, Brumby or Stallion board and initialize it.
3230 * This handles only these board types.
3233 static int stli_initonb(struct stlibrd *brdp)
3236 cdkonbsig_t __iomem *sigsp;
3241 * Do a basic sanity check on the IO and memory addresses.
3243 if (brdp->iobase == 0 || brdp->memaddr == 0) {
3248 brdp->iosize = ONB_IOSIZE;
3250 if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
3256 * Based on the specific board type setup the common vars to access
3257 * and enable shared memory. Set all board specific information now
3260 switch (brdp->brdtype) {
3263 brdp->memsize = ONB_MEMSIZE;
3264 brdp->pagesize = ONB_ATPAGESIZE;
3265 brdp->init = stli_onbinit;
3266 brdp->enable = stli_onbenable;
3267 brdp->reenable = stli_onbenable;
3268 brdp->disable = stli_onbdisable;
3269 brdp->getmemptr = stli_onbgetmemptr;
3270 brdp->intr = stli_ecpintr;
3271 brdp->reset = stli_onbreset;
3272 if (brdp->memaddr > 0x100000)
3273 brdp->enabval = ONB_MEMENABHI;
3275 brdp->enabval = ONB_MEMENABLO;
3276 name = "serial(ONBoard)";
3280 brdp->memsize = ONB_EIMEMSIZE;
3281 brdp->pagesize = ONB_EIPAGESIZE;
3282 brdp->init = stli_onbeinit;
3283 brdp->enable = stli_onbeenable;
3284 brdp->reenable = stli_onbeenable;
3285 brdp->disable = stli_onbedisable;
3286 brdp->getmemptr = stli_onbegetmemptr;
3287 brdp->intr = stli_ecpintr;
3288 brdp->reset = stli_onbereset;
3289 name = "serial(ONBoard/E)";
3293 brdp->memsize = BBY_MEMSIZE;
3294 brdp->pagesize = BBY_PAGESIZE;
3295 brdp->init = stli_bbyinit;
3296 brdp->enable = NULL;
3297 brdp->reenable = NULL;
3298 brdp->disable = NULL;
3299 brdp->getmemptr = stli_bbygetmemptr;
3300 brdp->intr = stli_ecpintr;
3301 brdp->reset = stli_bbyreset;
3302 name = "serial(Brumby)";
3306 brdp->memsize = STAL_MEMSIZE;
3307 brdp->pagesize = STAL_PAGESIZE;
3308 brdp->init = stli_stalinit;
3309 brdp->enable = NULL;
3310 brdp->reenable = NULL;
3311 brdp->disable = NULL;
3312 brdp->getmemptr = stli_stalgetmemptr;
3313 brdp->intr = stli_ecpintr;
3314 brdp->reset = stli_stalreset;
3315 name = "serial(Stallion)";
3324 * The per-board operations structure is all set up, so now let's go
3325 * and get the board operational. Firstly initialize board configuration
3326 * registers. Set the memory mapping info so we can get at the boards
3331 brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize);
3332 if (brdp->membase == NULL) {
3338 * Now that all specific code is set up, enable the shared memory and
3339 * look for the a signature area that will tell us exactly what board
3340 * this is, and how many ports.
3343 sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3344 memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t));
3347 if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) ||
3348 sig.magic1 != cpu_to_le16(ONB_MAGIC1) ||
3349 sig.magic2 != cpu_to_le16(ONB_MAGIC2) ||
3350 sig.magic3 != cpu_to_le16(ONB_MAGIC3)) {
3356 * Scan through the signature alive mask and calculate how many ports
3357 * there are on this board.
3363 for (i = 0; (i < 16); i++) {
3364 if (((sig.amask0 << i) & 0x8000) == 0)
3369 brdp->panels[0] = brdp->nrports;
3372 brdp->state |= BST_FOUND;
3375 iounmap(brdp->membase);
3376 brdp->membase = NULL;
3378 release_region(brdp->iobase, brdp->iosize);
3383 /*****************************************************************************/
3386 * Start up a running board. This routine is only called after the
3387 * code has been down loaded to the board and is operational. It will
3388 * read in the memory map, and get the show on the road...
3391 static int stli_startbrd(struct stlibrd *brdp)
3393 cdkhdr_t __iomem *hdrp;
3394 cdkmem_t __iomem *memp;
3395 cdkasy_t __iomem *ap;
3396 unsigned long flags;
3397 unsigned int portnr, nrdevs, i;
3398 struct stliport *portp;
3402 spin_lock_irqsave(&brd_lock, flags);
3404 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
3405 nrdevs = hdrp->nrdevs;
3408 printk("%s(%d): CDK version %d.%d.%d --> "
3409 "nrdevs=%d memp=%x hostp=%x slavep=%x\n",
3410 __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification),
3411 readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp),
3412 readl(&hdrp->slavep));
3415 if (nrdevs < (brdp->nrports + 1)) {
3416 printk(KERN_ERR "istallion: slave failed to allocate memory for "
3417 "all devices, devices=%d\n", nrdevs);
3418 brdp->nrports = nrdevs - 1;
3420 brdp->nrdevs = nrdevs;
3421 brdp->hostoffset = hdrp->hostp - CDK_CDKADDR;
3422 brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR;
3423 brdp->bitsize = (nrdevs + 7) / 8;
3424 memoff = readl(&hdrp->memp);
3425 if (memoff > brdp->memsize) {
3426 printk(KERN_ERR "istallion: corrupted shared memory region?\n");
3428 goto stli_donestartup;
3430 memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff);
3431 if (readw(&memp->dtype) != TYP_ASYNCTRL) {
3432 printk(KERN_ERR "istallion: no slave control device found\n");
3433 goto stli_donestartup;
3438 * Cycle through memory allocation of each port. We are guaranteed to
3439 * have all ports inside the first page of slave window, so no need to
3440 * change pages while reading memory map.
3442 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) {
3443 if (readw(&memp->dtype) != TYP_ASYNC)
3445 portp = brdp->ports[portnr];
3449 portp->addr = readl(&memp->offset);
3450 portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs));
3451 portp->portidx = (unsigned char) (i / 8);
3452 portp->portbit = (unsigned char) (0x1 << (i % 8));
3455 writeb(0xff, &hdrp->slavereq);
3458 * For each port setup a local copy of the RX and TX buffer offsets
3459 * and sizes. We do this separate from the above, because we need to
3460 * move the shared memory page...
3462 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) {
3463 portp = brdp->ports[portnr];
3466 if (portp->addr == 0)
3468 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
3470 portp->rxsize = readw(&ap->rxq.size);
3471 portp->txsize = readw(&ap->txq.size);
3472 portp->rxoffset = readl(&ap->rxq.offset);
3473 portp->txoffset = readl(&ap->txq.offset);
3479 spin_unlock_irqrestore(&brd_lock, flags);
3482 brdp->state |= BST_STARTED;
3484 if (! stli_timeron) {
3486 mod_timer(&stli_timerlist, STLI_TIMEOUT);
3492 /*****************************************************************************/
3495 * Probe and initialize the specified board.
3498 static int __devinit stli_brdinit(struct stlibrd *brdp)
3502 switch (brdp->brdtype) {
3507 retval = stli_initecp(brdp);
3514 retval = stli_initonb(brdp);
3517 printk(KERN_ERR "istallion: board=%d is unknown board "
3518 "type=%d\n", brdp->brdnr, brdp->brdtype);
3525 stli_initports(brdp);
3526 printk(KERN_INFO "istallion: %s found, board=%d io=%x mem=%x "
3527 "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype],
3528 brdp->brdnr, brdp->iobase, (int) brdp->memaddr,
3529 brdp->nrpanels, brdp->nrports);
3533 #if STLI_EISAPROBE != 0
3534 /*****************************************************************************/
3537 * Probe around trying to find where the EISA boards shared memory
3538 * might be. This is a bit if hack, but it is the best we can do.
3541 static int stli_eisamemprobe(struct stlibrd *brdp)
3543 cdkecpsig_t ecpsig, __iomem *ecpsigp;
3544 cdkonbsig_t onbsig, __iomem *onbsigp;
3548 * First up we reset the board, to get it into a known state. There
3549 * is only 2 board types here we need to worry about. Don;t use the
3550 * standard board init routine here, it programs up the shared
3551 * memory address, and we don't know it yet...
3553 if (brdp->brdtype == BRD_ECPE) {
3554 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
3555 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
3557 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3559 stli_ecpeienable(brdp);
3560 } else if (brdp->brdtype == BRD_ONBOARDE) {
3561 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
3562 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3564 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3566 outb(0x1, brdp->iobase);
3568 stli_onbeenable(brdp);
3574 brdp->memsize = ECP_MEMSIZE;
3577 * Board shared memory is enabled, so now we have a poke around and
3578 * see if we can find it.
3580 for (i = 0; (i < stli_eisamempsize); i++) {
3581 brdp->memaddr = stli_eisamemprobeaddrs[i];
3582 brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize);
3583 if (brdp->membase == NULL)
3586 if (brdp->brdtype == BRD_ECPE) {
3587 ecpsigp = stli_ecpeigetmemptr(brdp,
3588 CDK_SIGADDR, __LINE__);
3589 memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t));
3590 if (ecpsig.magic == cpu_to_le32(ECP_MAGIC))
3593 onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp,
3594 CDK_SIGADDR, __LINE__);
3595 memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t));
3596 if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) &&
3597 (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) &&
3598 (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) &&
3599 (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3)))
3603 iounmap(brdp->membase);
3609 * Regardless of whether we found the shared memory or not we must
3610 * disable the region. After that return success or failure.
3612 if (brdp->brdtype == BRD_ECPE)
3613 stli_ecpeidisable(brdp);
3615 stli_onbedisable(brdp);
3619 brdp->membase = NULL;
3620 printk(KERN_ERR "istallion: failed to probe shared memory "
3621 "region for %s in EISA slot=%d\n",
3622 stli_brdnames[brdp->brdtype], (brdp->iobase >> 12));
3629 static int stli_getbrdnr(void)
3633 for (i = 0; i < STL_MAXBRDS; i++) {
3634 if (!stli_brds[i]) {
3635 if (i >= stli_nrbrds)
3636 stli_nrbrds = i + 1;
3643 #if STLI_EISAPROBE != 0
3644 /*****************************************************************************/
3647 * Probe around and try to find any EISA boards in system. The biggest
3648 * problem here is finding out what memory address is associated with
3649 * an EISA board after it is found. The registers of the ECPE and
3650 * ONboardE are not readable - so we can't read them from there. We
3651 * don't have access to the EISA CMOS (or EISA BIOS) so we don't
3652 * actually have any way to find out the real value. The best we can
3653 * do is go probing around in the usual places hoping we can find it.
3656 static int __init stli_findeisabrds(void)
3658 struct stlibrd *brdp;
3659 unsigned int iobase, eid, i;
3660 int brdnr, found = 0;
3663 * Firstly check if this is an EISA system. If this is not an EISA system then
3664 * don't bother going any further!
3670 * Looks like an EISA system, so go searching for EISA boards.
3672 for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) {
3673 outb(0xff, (iobase + 0xc80));
3674 eid = inb(iobase + 0xc80);
3675 eid |= inb(iobase + 0xc81) << 8;
3676 if (eid != STL_EISAID)
3680 * We have found a board. Need to check if this board was
3681 * statically configured already (just in case!).
3683 for (i = 0; (i < STL_MAXBRDS); i++) {
3684 brdp = stli_brds[i];
3687 if (brdp->iobase == iobase)
3690 if (i < STL_MAXBRDS)
3694 * We have found a Stallion board and it is not configured already.
3695 * Allocate a board structure and initialize it.
3697 if ((brdp = stli_allocbrd()) == NULL)
3698 return found ? : -ENOMEM;
3699 brdnr = stli_getbrdnr();
3701 return found ? : -ENOMEM;
3702 brdp->brdnr = (unsigned int)brdnr;
3703 eid = inb(iobase + 0xc82);
3704 if (eid == ECP_EISAID)
3705 brdp->brdtype = BRD_ECPE;
3706 else if (eid == ONB_EISAID)
3707 brdp->brdtype = BRD_ONBOARDE;
3709 brdp->brdtype = BRD_UNKNOWN;
3710 brdp->iobase = iobase;
3711 outb(0x1, (iobase + 0xc84));
3712 if (stli_eisamemprobe(brdp))
3713 outb(0, (iobase + 0xc84));
3714 if (stli_brdinit(brdp) < 0) {
3719 stli_brds[brdp->brdnr] = brdp;
3722 for (i = 0; i < brdp->nrports; i++)
3723 tty_register_device(stli_serial,
3724 brdp->brdnr * STL_MAXPORTS + i, NULL);
3730 static inline int stli_findeisabrds(void) { return 0; }
3733 /*****************************************************************************/
3736 * Find the next available board number that is free.
3739 /*****************************************************************************/
3742 * We have a Stallion board. Allocate a board structure and
3743 * initialize it. Read its IO and MEMORY resources from PCI
3744 * configuration space.
3747 static int __devinit stli_pciprobe(struct pci_dev *pdev,
3748 const struct pci_device_id *ent)
3750 struct stlibrd *brdp;
3752 int brdnr, retval = -EIO;
3754 retval = pci_enable_device(pdev);
3757 brdp = stli_allocbrd();
3762 mutex_lock(&stli_brdslock);
3763 brdnr = stli_getbrdnr();
3765 printk(KERN_INFO "istallion: too many boards found, "
3766 "maximum supported %d\n", STL_MAXBRDS);
3767 mutex_unlock(&stli_brdslock);
3771 brdp->brdnr = (unsigned int)brdnr;
3772 stli_brds[brdp->brdnr] = brdp;
3773 mutex_unlock(&stli_brdslock);
3774 brdp->brdtype = BRD_ECPPCI;
3776 * We have all resources from the board, so lets setup the actual
3777 * board structure now.
3779 brdp->iobase = pci_resource_start(pdev, 3);
3780 brdp->memaddr = pci_resource_start(pdev, 2);
3781 retval = stli_brdinit(brdp);
3785 brdp->state |= BST_PROBED;
3786 pci_set_drvdata(pdev, brdp);
3789 brdp->enable = NULL;
3790 brdp->disable = NULL;
3792 for (i = 0; i < brdp->nrports; i++)
3793 tty_register_device(stli_serial, brdp->brdnr * STL_MAXPORTS + i,
3798 stli_brds[brdp->brdnr] = NULL;
3805 static void stli_pciremove(struct pci_dev *pdev)
3807 struct stlibrd *brdp = pci_get_drvdata(pdev);
3809 stli_cleanup_ports(brdp);
3811 iounmap(brdp->membase);
3812 if (brdp->iosize > 0)
3813 release_region(brdp->iobase, brdp->iosize);
3815 stli_brds[brdp->brdnr] = NULL;
3819 static struct pci_driver stli_pcidriver = {
3820 .name = "istallion",
3821 .id_table = istallion_pci_tbl,
3822 .probe = stli_pciprobe,
3823 .remove = __devexit_p(stli_pciremove)
3825 /*****************************************************************************/
3828 * Allocate a new board structure. Fill out the basic info in it.
3831 static struct stlibrd *stli_allocbrd(void)
3833 struct stlibrd *brdp;
3835 brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL);
3837 printk(KERN_ERR "istallion: failed to allocate memory "
3838 "(size=%Zd)\n", sizeof(struct stlibrd));
3841 brdp->magic = STLI_BOARDMAGIC;
3845 /*****************************************************************************/
3848 * Scan through all the boards in the configuration and see what we
3852 static int __init stli_initbrds(void)
3854 struct stlibrd *brdp, *nxtbrdp;
3855 struct stlconf conf;
3856 unsigned int i, j, found = 0;
3859 for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp);
3861 memset(&conf, 0, sizeof(conf));
3862 if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0)
3864 if ((brdp = stli_allocbrd()) == NULL)
3866 brdp->brdnr = stli_nrbrds;
3867 brdp->brdtype = conf.brdtype;
3868 brdp->iobase = conf.ioaddr1;
3869 brdp->memaddr = conf.memaddr;
3870 if (stli_brdinit(brdp) < 0) {
3874 stli_brds[brdp->brdnr] = brdp;
3877 for (i = 0; i < brdp->nrports; i++)
3878 tty_register_device(stli_serial,
3879 brdp->brdnr * STL_MAXPORTS + i, NULL);
3882 retval = stli_findeisabrds();
3887 * All found boards are initialized. Now for a little optimization, if
3888 * no boards are sharing the "shared memory" regions then we can just
3889 * leave them all enabled. This is in fact the usual case.
3892 if (stli_nrbrds > 1) {
3893 for (i = 0; (i < stli_nrbrds); i++) {
3894 brdp = stli_brds[i];
3897 for (j = i + 1; (j < stli_nrbrds); j++) {
3898 nxtbrdp = stli_brds[j];
3899 if (nxtbrdp == NULL)
3901 if ((brdp->membase >= nxtbrdp->membase) &&
3902 (brdp->membase <= (nxtbrdp->membase +
3903 nxtbrdp->memsize - 1))) {
3911 if (stli_shared == 0) {
3912 for (i = 0; (i < stli_nrbrds); i++) {
3913 brdp = stli_brds[i];
3916 if (brdp->state & BST_FOUND) {
3918 brdp->enable = NULL;
3919 brdp->disable = NULL;
3924 retval = pci_register_driver(&stli_pcidriver);
3925 if (retval && found == 0) {
3926 printk(KERN_ERR "Neither isa nor eisa cards found nor pci "
3927 "driver can be registered!\n");
3936 /*****************************************************************************/
3939 * Code to handle an "staliomem" read operation. This device is the
3940 * contents of the board shared memory. It is used for down loading
3941 * the slave image (and debugging :-)
3944 static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp)
3946 unsigned long flags;
3947 void __iomem *memptr;
3948 struct stlibrd *brdp;
3954 brdnr = iminor(fp->f_path.dentry->d_inode);
3955 if (brdnr >= stli_nrbrds)
3957 brdp = stli_brds[brdnr];
3960 if (brdp->state == 0)
3962 if (off >= brdp->memsize || off + count < off)
3965 size = min(count, (size_t)(brdp->memsize - off));
3968 * Copy the data a page at a time
3971 p = (void *)__get_free_page(GFP_KERNEL);
3976 spin_lock_irqsave(&brd_lock, flags);
3978 memptr = EBRDGETMEMPTR(brdp, off);
3979 n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
3980 n = min(n, (int)PAGE_SIZE);
3981 memcpy_fromio(p, memptr, n);
3983 spin_unlock_irqrestore(&brd_lock, flags);
3984 if (copy_to_user(buf, p, n)) {
3994 free_page((unsigned long)p);
3998 /*****************************************************************************/
4001 * Code to handle an "staliomem" write operation. This device is the
4002 * contents of the board shared memory. It is used for down loading
4003 * the slave image (and debugging :-)
4005 * FIXME: copy under lock
4008 static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp)
4010 unsigned long flags;
4011 void __iomem *memptr;
4012 struct stlibrd *brdp;
4019 brdnr = iminor(fp->f_path.dentry->d_inode);
4021 if (brdnr >= stli_nrbrds)
4023 brdp = stli_brds[brdnr];
4026 if (brdp->state == 0)
4028 if (off >= brdp->memsize || off + count < off)
4031 chbuf = (char __user *) buf;
4032 size = min(count, (size_t)(brdp->memsize - off));
4035 * Copy the data a page at a time
4038 p = (void *)__get_free_page(GFP_KERNEL);
4043 n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
4044 n = min(n, (int)PAGE_SIZE);
4045 if (copy_from_user(p, chbuf, n)) {
4050 spin_lock_irqsave(&brd_lock, flags);
4052 memptr = EBRDGETMEMPTR(brdp, off);
4053 memcpy_toio(memptr, p, n);
4055 spin_unlock_irqrestore(&brd_lock, flags);
4061 free_page((unsigned long) p);
4066 /*****************************************************************************/
4069 * Return the board stats structure to user app.
4072 static int stli_getbrdstats(combrd_t __user *bp)
4074 struct stlibrd *brdp;
4077 if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t)))
4079 if (stli_brdstats.brd >= STL_MAXBRDS)
4081 brdp = stli_brds[stli_brdstats.brd];
4085 memset(&stli_brdstats, 0, sizeof(combrd_t));
4086 stli_brdstats.brd = brdp->brdnr;
4087 stli_brdstats.type = brdp->brdtype;
4088 stli_brdstats.hwid = 0;
4089 stli_brdstats.state = brdp->state;
4090 stli_brdstats.ioaddr = brdp->iobase;
4091 stli_brdstats.memaddr = brdp->memaddr;
4092 stli_brdstats.nrpanels = brdp->nrpanels;
4093 stli_brdstats.nrports = brdp->nrports;
4094 for (i = 0; (i < brdp->nrpanels); i++) {
4095 stli_brdstats.panels[i].panel = i;
4096 stli_brdstats.panels[i].hwid = brdp->panelids[i];
4097 stli_brdstats.panels[i].nrports = brdp->panels[i];
4100 if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t)))
4105 /*****************************************************************************/
4108 * Resolve the referenced port number into a port struct pointer.
4111 static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr,
4112 unsigned int portnr)
4114 struct stlibrd *brdp;
4117 if (brdnr >= STL_MAXBRDS)
4119 brdp = stli_brds[brdnr];
4122 for (i = 0; (i < panelnr); i++)
4123 portnr += brdp->panels[i];
4124 if (portnr >= brdp->nrports)
4126 return brdp->ports[portnr];
4129 /*****************************************************************************/
4132 * Return the port stats structure to user app. A NULL port struct
4133 * pointer passed in means that we need to find out from the app
4134 * what port to get stats for (used through board control device).
4137 static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp)
4139 unsigned long flags;
4140 struct stlibrd *brdp;
4143 memset(&stli_comstats, 0, sizeof(comstats_t));
4147 brdp = stli_brds[portp->brdnr];
4151 if (brdp->state & BST_STARTED) {
4152 if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS,
4153 &stli_cdkstats, sizeof(asystats_t), 1)) < 0)
4156 memset(&stli_cdkstats, 0, sizeof(asystats_t));
4159 stli_comstats.brd = portp->brdnr;
4160 stli_comstats.panel = portp->panelnr;
4161 stli_comstats.port = portp->portnr;
4162 stli_comstats.state = portp->state;
4163 stli_comstats.flags = portp->port.flags;
4165 spin_lock_irqsave(&brd_lock, flags);
4167 if (portp->port.tty == tty) {
4168 stli_comstats.ttystate = tty->flags;
4169 stli_comstats.rxbuffered = -1;
4170 if (tty->termios != NULL) {
4171 stli_comstats.cflags = tty->termios->c_cflag;
4172 stli_comstats.iflags = tty->termios->c_iflag;
4173 stli_comstats.oflags = tty->termios->c_oflag;
4174 stli_comstats.lflags = tty->termios->c_lflag;
4178 spin_unlock_irqrestore(&brd_lock, flags);
4180 stli_comstats.txtotal = stli_cdkstats.txchars;
4181 stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover;
4182 stli_comstats.txbuffered = stli_cdkstats.txringq;
4183 stli_comstats.rxbuffered += stli_cdkstats.rxringq;
4184 stli_comstats.rxoverrun = stli_cdkstats.overruns;
4185 stli_comstats.rxparity = stli_cdkstats.parity;
4186 stli_comstats.rxframing = stli_cdkstats.framing;
4187 stli_comstats.rxlost = stli_cdkstats.ringover;
4188 stli_comstats.rxbreaks = stli_cdkstats.rxbreaks;
4189 stli_comstats.txbreaks = stli_cdkstats.txbreaks;
4190 stli_comstats.txxon = stli_cdkstats.txstart;
4191 stli_comstats.txxoff = stli_cdkstats.txstop;
4192 stli_comstats.rxxon = stli_cdkstats.rxstart;
4193 stli_comstats.rxxoff = stli_cdkstats.rxstop;
4194 stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2;
4195 stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff;
4196 stli_comstats.modem = stli_cdkstats.dcdcnt;
4197 stli_comstats.hwid = stli_cdkstats.hwid;
4198 stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals);
4203 /*****************************************************************************/
4206 * Return the port stats structure to user app. A NULL port struct
4207 * pointer passed in means that we need to find out from the app
4208 * what port to get stats for (used through board control device).
4211 static int stli_getportstats(struct tty_struct *tty, struct stliport *portp,
4212 comstats_t __user *cp)
4214 struct stlibrd *brdp;
4218 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4220 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4221 stli_comstats.port);
4226 brdp = stli_brds[portp->brdnr];
4230 if ((rc = stli_portcmdstats(tty, portp)) < 0)
4233 return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ?
4237 /*****************************************************************************/
4240 * Clear the port stats structure. We also return it zeroed out...
4243 static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp)
4245 struct stlibrd *brdp;
4249 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4251 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4252 stli_comstats.port);
4257 brdp = stli_brds[portp->brdnr];
4261 if (brdp->state & BST_STARTED) {
4262 if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0)
4266 memset(&stli_comstats, 0, sizeof(comstats_t));
4267 stli_comstats.brd = portp->brdnr;
4268 stli_comstats.panel = portp->panelnr;
4269 stli_comstats.port = portp->portnr;
4271 if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t)))
4276 /*****************************************************************************/
4279 * Return the entire driver ports structure to a user app.
4282 static int stli_getportstruct(struct stliport __user *arg)
4284 struct stliport stli_dummyport;
4285 struct stliport *portp;
4287 if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport)))
4289 portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr,
4290 stli_dummyport.portnr);
4293 if (copy_to_user(arg, portp, sizeof(struct stliport)))
4298 /*****************************************************************************/
4301 * Return the entire driver board structure to a user app.
4304 static int stli_getbrdstruct(struct stlibrd __user *arg)
4306 struct stlibrd stli_dummybrd;
4307 struct stlibrd *brdp;
4309 if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd)))
4311 if (stli_dummybrd.brdnr >= STL_MAXBRDS)
4313 brdp = stli_brds[stli_dummybrd.brdnr];
4316 if (copy_to_user(arg, brdp, sizeof(struct stlibrd)))
4321 /*****************************************************************************/
4324 * The "staliomem" device is also required to do some special operations on
4325 * the board. We need to be able to send an interrupt to the board,
4326 * reset it, and start/stop it.
4329 static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg)
4331 struct stlibrd *brdp;
4332 int brdnr, rc, done;
4333 void __user *argp = (void __user *)arg;
4336 * First up handle the board independent ioctls.
4344 case COM_GETPORTSTATS:
4345 rc = stli_getportstats(NULL, NULL, argp);
4348 case COM_CLRPORTSTATS:
4349 rc = stli_clrportstats(NULL, argp);
4352 case COM_GETBRDSTATS:
4353 rc = stli_getbrdstats(argp);
4357 rc = stli_getportstruct(argp);
4361 rc = stli_getbrdstruct(argp);
4371 * Now handle the board specific ioctls. These all depend on the
4372 * minor number of the device they were called from.
4375 if (brdnr >= STL_MAXBRDS)
4377 brdp = stli_brds[brdnr];
4380 if (brdp->state == 0)
4390 rc = stli_startbrd(brdp);
4393 brdp->state &= ~BST_STARTED;
4396 brdp->state &= ~BST_STARTED;
4398 if (stli_shared == 0) {
4399 if (brdp->reenable != NULL)
4400 (* brdp->reenable)(brdp);
4411 static const struct tty_operations stli_ops = {
4413 .close = stli_close,
4414 .write = stli_write,
4415 .put_char = stli_putchar,
4416 .flush_chars = stli_flushchars,
4417 .write_room = stli_writeroom,
4418 .chars_in_buffer = stli_charsinbuffer,
4419 .ioctl = stli_ioctl,
4420 .set_termios = stli_settermios,
4421 .throttle = stli_throttle,
4422 .unthrottle = stli_unthrottle,
4424 .start = stli_start,
4425 .hangup = stli_hangup,
4426 .flush_buffer = stli_flushbuffer,
4427 .break_ctl = stli_breakctl,
4428 .wait_until_sent = stli_waituntilsent,
4429 .send_xchar = stli_sendxchar,
4430 .read_proc = stli_readproc,
4431 .tiocmget = stli_tiocmget,
4432 .tiocmset = stli_tiocmset,
4435 static const struct tty_port_operations stli_port_ops = {
4436 .carrier_raised = stli_carrier_raised,
4437 .raise_dtr_rts = stli_raise_dtr_rts,
4440 /*****************************************************************************/
4442 * Loadable module initialization stuff.
4445 static void istallion_cleanup_isa(void)
4447 struct stlibrd *brdp;
4450 for (j = 0; (j < stli_nrbrds); j++) {
4451 if ((brdp = stli_brds[j]) == NULL || (brdp->state & BST_PROBED))
4454 stli_cleanup_ports(brdp);
4456 iounmap(brdp->membase);
4457 if (brdp->iosize > 0)
4458 release_region(brdp->iobase, brdp->iosize);
4460 stli_brds[j] = NULL;
4464 static int __init istallion_module_init(void)
4469 printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion);
4471 spin_lock_init(&stli_lock);
4472 spin_lock_init(&brd_lock);
4474 stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL);
4475 if (!stli_txcookbuf) {
4476 printk(KERN_ERR "istallion: failed to allocate memory "
4477 "(size=%d)\n", STLI_TXBUFSIZE);
4482 stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS);
4488 stli_serial->owner = THIS_MODULE;
4489 stli_serial->driver_name = stli_drvname;
4490 stli_serial->name = stli_serialname;
4491 stli_serial->major = STL_SERIALMAJOR;
4492 stli_serial->minor_start = 0;
4493 stli_serial->type = TTY_DRIVER_TYPE_SERIAL;
4494 stli_serial->subtype = SERIAL_TYPE_NORMAL;
4495 stli_serial->init_termios = stli_deftermios;
4496 stli_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
4497 tty_set_operations(stli_serial, &stli_ops);
4499 retval = tty_register_driver(stli_serial);
4501 printk(KERN_ERR "istallion: failed to register serial driver\n");
4505 retval = stli_initbrds();
4510 * Set up a character driver for the shared memory region. We need this
4511 * to down load the slave code image. Also it is a useful debugging tool.
4513 retval = register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem);
4515 printk(KERN_ERR "istallion: failed to register serial memory "
4520 istallion_class = class_create(THIS_MODULE, "staliomem");
4521 for (i = 0; i < 4; i++)
4522 device_create(istallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i),
4523 NULL, "staliomem%d", i);
4527 pci_unregister_driver(&stli_pcidriver);
4528 istallion_cleanup_isa();
4530 tty_unregister_driver(stli_serial);
4532 put_tty_driver(stli_serial);
4534 kfree(stli_txcookbuf);
4539 /*****************************************************************************/
4541 static void __exit istallion_module_exit(void)
4545 printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle,
4550 del_timer_sync(&stli_timerlist);
4553 unregister_chrdev(STL_SIOMEMMAJOR, "staliomem");
4555 for (j = 0; j < 4; j++)
4556 device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, j));
4557 class_destroy(istallion_class);
4559 pci_unregister_driver(&stli_pcidriver);
4560 istallion_cleanup_isa();
4562 tty_unregister_driver(stli_serial);
4563 put_tty_driver(stli_serial);
4565 kfree(stli_txcookbuf);
4568 module_init(istallion_module_init);
4569 module_exit(istallion_module_exit);