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;
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 void 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 void 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 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_waitcarrier(struct stlibrd *brdp, struct stliport *portp, struct file *filp);
630 static void stli_dohangup(struct work_struct *);
631 static int stli_setport(struct stliport *portp);
632 static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
633 static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
634 static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
635 static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp);
636 static void stli_mkasyport(struct stliport *portp, asyport_t *pp, struct ktermios *tiosp);
637 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts);
638 static long stli_mktiocm(unsigned long sigvalue);
639 static void stli_read(struct stlibrd *brdp, struct stliport *portp);
640 static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp);
641 static int stli_setserial(struct stliport *portp, struct serial_struct __user *sp);
642 static int stli_getbrdstats(combrd_t __user *bp);
643 static int stli_getportstats(struct stliport *portp, comstats_t __user *cp);
644 static int stli_portcmdstats(struct stliport *portp);
645 static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp);
646 static int stli_getportstruct(struct stliport __user *arg);
647 static int stli_getbrdstruct(struct stlibrd __user *arg);
648 static struct stlibrd *stli_allocbrd(void);
650 static void stli_ecpinit(struct stlibrd *brdp);
651 static void stli_ecpenable(struct stlibrd *brdp);
652 static void stli_ecpdisable(struct stlibrd *brdp);
653 static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
654 static void stli_ecpreset(struct stlibrd *brdp);
655 static void stli_ecpintr(struct stlibrd *brdp);
656 static void stli_ecpeiinit(struct stlibrd *brdp);
657 static void stli_ecpeienable(struct stlibrd *brdp);
658 static void stli_ecpeidisable(struct stlibrd *brdp);
659 static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
660 static void stli_ecpeireset(struct stlibrd *brdp);
661 static void stli_ecpmcenable(struct stlibrd *brdp);
662 static void stli_ecpmcdisable(struct stlibrd *brdp);
663 static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
664 static void stli_ecpmcreset(struct stlibrd *brdp);
665 static void stli_ecppciinit(struct stlibrd *brdp);
666 static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
667 static void stli_ecppcireset(struct stlibrd *brdp);
669 static void stli_onbinit(struct stlibrd *brdp);
670 static void stli_onbenable(struct stlibrd *brdp);
671 static void stli_onbdisable(struct stlibrd *brdp);
672 static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
673 static void stli_onbreset(struct stlibrd *brdp);
674 static void stli_onbeinit(struct stlibrd *brdp);
675 static void stli_onbeenable(struct stlibrd *brdp);
676 static void stli_onbedisable(struct stlibrd *brdp);
677 static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
678 static void stli_onbereset(struct stlibrd *brdp);
679 static void stli_bbyinit(struct stlibrd *brdp);
680 static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
681 static void stli_bbyreset(struct stlibrd *brdp);
682 static void stli_stalinit(struct stlibrd *brdp);
683 static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
684 static void stli_stalreset(struct stlibrd *brdp);
686 static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr);
688 static int stli_initecp(struct stlibrd *brdp);
689 static int stli_initonb(struct stlibrd *brdp);
690 #if STLI_EISAPROBE != 0
691 static int stli_eisamemprobe(struct stlibrd *brdp);
693 static int stli_initports(struct stlibrd *brdp);
695 /*****************************************************************************/
698 * Define the driver info for a user level shared memory device. This
699 * device will work sort of like the /dev/kmem device - except that it
700 * will give access to the shared memory on the Stallion intelligent
701 * board. This is also a very useful debugging tool.
703 static const struct file_operations stli_fsiomem = {
704 .owner = THIS_MODULE,
705 .read = stli_memread,
706 .write = stli_memwrite,
707 .ioctl = stli_memioctl,
710 /*****************************************************************************/
713 * Define a timer_list entry for our poll routine. The slave board
714 * is polled every so often to see if anything needs doing. This is
715 * much cheaper on host cpu than using interrupts. It turns out to
716 * not increase character latency by much either...
718 static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0);
720 static int stli_timeron;
723 * Define the calculation for the timeout routine.
725 #define STLI_TIMEOUT (jiffies + 1)
727 /*****************************************************************************/
729 static struct class *istallion_class;
731 static void stli_cleanup_ports(struct stlibrd *brdp)
733 struct stliport *portp;
736 for (j = 0; j < STL_MAXPORTS; j++) {
737 portp = brdp->ports[j];
739 if (portp->tty != NULL)
740 tty_hangup(portp->tty);
746 /*****************************************************************************/
749 * Parse the supplied argument string, into the board conf struct.
752 static int stli_parsebrd(struct stlconf *confp, char **argp)
757 if (argp[0] == NULL || *argp[0] == 0)
760 for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++)
763 for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) {
764 if (strcmp(stli_brdstr[i].name, argp[0]) == 0)
767 if (i == ARRAY_SIZE(stli_brdstr)) {
768 printk("STALLION: unknown board name, %s?\n", argp[0]);
772 confp->brdtype = stli_brdstr[i].type;
773 if (argp[1] != NULL && *argp[1] != 0)
774 confp->ioaddr1 = simple_strtoul(argp[1], NULL, 0);
775 if (argp[2] != NULL && *argp[2] != 0)
776 confp->memaddr = simple_strtoul(argp[2], NULL, 0);
780 /*****************************************************************************/
782 static int stli_open(struct tty_struct *tty, struct file *filp)
784 struct stlibrd *brdp;
785 struct stliport *portp;
786 unsigned int minordev, brdnr, portnr;
789 minordev = tty->index;
790 brdnr = MINOR2BRD(minordev);
791 if (brdnr >= stli_nrbrds)
793 brdp = stli_brds[brdnr];
796 if ((brdp->state & BST_STARTED) == 0)
798 portnr = MINOR2PORT(minordev);
799 if (portnr > brdp->nrports)
802 portp = brdp->ports[portnr];
805 if (portp->devnr < 1)
810 * Check if this port is in the middle of closing. If so then wait
811 * until it is closed then return error status based on flag settings.
812 * The sleep here does not need interrupt protection since the wakeup
813 * for it is done with the same context.
815 if (portp->flags & ASYNC_CLOSING) {
816 interruptible_sleep_on(&portp->close_wait);
817 if (portp->flags & ASYNC_HUP_NOTIFY)
823 * On the first open of the device setup the port hardware, and
824 * initialize the per port data structure. Since initializing the port
825 * requires several commands to the board we will need to wait for any
826 * other open that is already initializing the port.
829 tty->driver_data = portp;
832 wait_event_interruptible(portp->raw_wait,
833 !test_bit(ST_INITIALIZING, &portp->state));
834 if (signal_pending(current))
837 if ((portp->flags & ASYNC_INITIALIZED) == 0) {
838 set_bit(ST_INITIALIZING, &portp->state);
839 if ((rc = stli_initopen(brdp, portp)) >= 0) {
840 portp->flags |= ASYNC_INITIALIZED;
841 clear_bit(TTY_IO_ERROR, &tty->flags);
843 clear_bit(ST_INITIALIZING, &portp->state);
844 wake_up_interruptible(&portp->raw_wait);
850 * Check if this port is in the middle of closing. If so then wait
851 * until it is closed then return error status, based on flag settings.
852 * The sleep here does not need interrupt protection since the wakeup
853 * for it is done with the same context.
855 if (portp->flags & ASYNC_CLOSING) {
856 interruptible_sleep_on(&portp->close_wait);
857 if (portp->flags & ASYNC_HUP_NOTIFY)
863 * Based on type of open being done check if it can overlap with any
864 * previous opens still in effect. If we are a normal serial device
865 * then also we might have to wait for carrier.
867 if (!(filp->f_flags & O_NONBLOCK)) {
868 if ((rc = stli_waitcarrier(brdp, portp, filp)) != 0)
871 portp->flags |= ASYNC_NORMAL_ACTIVE;
875 /*****************************************************************************/
877 static void stli_close(struct tty_struct *tty, struct file *filp)
879 struct stlibrd *brdp;
880 struct stliport *portp;
883 portp = tty->driver_data;
887 spin_lock_irqsave(&stli_lock, flags);
888 if (tty_hung_up_p(filp)) {
889 spin_unlock_irqrestore(&stli_lock, flags);
892 if ((tty->count == 1) && (portp->refcount != 1))
894 if (portp->refcount-- > 1) {
895 spin_unlock_irqrestore(&stli_lock, flags);
899 portp->flags |= ASYNC_CLOSING;
902 * May want to wait for data to drain before closing. The BUSY flag
903 * keeps track of whether we are still transmitting or not. It is
904 * updated by messages from the slave - indicating when all chars
905 * really have drained.
907 if (tty == stli_txcooktty)
908 stli_flushchars(tty);
910 spin_unlock_irqrestore(&stli_lock, flags);
912 if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE)
913 tty_wait_until_sent(tty, portp->closing_wait);
915 portp->flags &= ~ASYNC_INITIALIZED;
916 brdp = stli_brds[portp->brdnr];
917 stli_rawclose(brdp, portp, 0, 0);
918 if (tty->termios->c_cflag & HUPCL) {
919 stli_mkasysigs(&portp->asig, 0, 0);
920 if (test_bit(ST_CMDING, &portp->state))
921 set_bit(ST_DOSIGS, &portp->state);
923 stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig,
924 sizeof(asysigs_t), 0);
926 clear_bit(ST_TXBUSY, &portp->state);
927 clear_bit(ST_RXSTOP, &portp->state);
928 set_bit(TTY_IO_ERROR, &tty->flags);
929 if (tty->ldisc.flush_buffer)
930 (tty->ldisc.flush_buffer)(tty);
931 set_bit(ST_DOFLUSHRX, &portp->state);
932 stli_flushbuffer(tty);
937 if (portp->openwaitcnt) {
938 if (portp->close_delay)
939 msleep_interruptible(jiffies_to_msecs(portp->close_delay));
940 wake_up_interruptible(&portp->open_wait);
943 portp->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
944 wake_up_interruptible(&portp->close_wait);
947 /*****************************************************************************/
950 * Carry out first open operations on a port. This involves a number of
951 * commands to be sent to the slave. We need to open the port, set the
952 * notification events, set the initial port settings, get and set the
953 * initial signal values. We sleep and wait in between each one. But
954 * this still all happens pretty quickly.
957 static int stli_initopen(struct stlibrd *brdp, struct stliport *portp)
959 struct tty_struct *tty;
964 if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0)
967 memset(&nt, 0, sizeof(asynotify_t));
968 nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK);
970 if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt,
971 sizeof(asynotify_t), 0)) < 0)
977 stli_mkasyport(portp, &aport, tty->termios);
978 if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport,
979 sizeof(asyport_t), 0)) < 0)
982 set_bit(ST_GETSIGS, &portp->state);
983 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig,
984 sizeof(asysigs_t), 1)) < 0)
986 if (test_and_clear_bit(ST_GETSIGS, &portp->state))
987 portp->sigs = stli_mktiocm(portp->asig.sigvalue);
988 stli_mkasysigs(&portp->asig, 1, 1);
989 if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
990 sizeof(asysigs_t), 0)) < 0)
996 /*****************************************************************************/
999 * Send an open message to the slave. This will sleep waiting for the
1000 * acknowledgement, so must have user context. We need to co-ordinate
1001 * with close events here, since we don't want open and close events
1005 static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
1007 cdkhdr_t __iomem *hdrp;
1008 cdkctrl_t __iomem *cp;
1009 unsigned char __iomem *bits;
1010 unsigned long flags;
1014 * Send a message to the slave to open this port.
1018 * Slave is already closing this port. This can happen if a hangup
1019 * occurs on this port. So we must wait until it is complete. The
1020 * order of opens and closes may not be preserved across shared
1021 * memory, so we must wait until it is complete.
1023 wait_event_interruptible(portp->raw_wait,
1024 !test_bit(ST_CLOSING, &portp->state));
1025 if (signal_pending(current)) {
1026 return -ERESTARTSYS;
1030 * Everything is ready now, so write the open message into shared
1031 * memory. Once the message is in set the service bits to say that
1032 * this port wants service.
1034 spin_lock_irqsave(&brd_lock, flags);
1036 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1037 writel(arg, &cp->openarg);
1038 writeb(1, &cp->open);
1039 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1040 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1042 writeb(readb(bits) | portp->portbit, bits);
1046 spin_unlock_irqrestore(&brd_lock, flags);
1051 * Slave is in action, so now we must wait for the open acknowledgment
1055 set_bit(ST_OPENING, &portp->state);
1056 spin_unlock_irqrestore(&brd_lock, flags);
1058 wait_event_interruptible(portp->raw_wait,
1059 !test_bit(ST_OPENING, &portp->state));
1060 if (signal_pending(current))
1063 if ((rc == 0) && (portp->rc != 0))
1068 /*****************************************************************************/
1071 * Send a close message to the slave. Normally this will sleep waiting
1072 * for the acknowledgement, but if wait parameter is 0 it will not. If
1073 * wait is true then must have user context (to sleep).
1076 static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
1078 cdkhdr_t __iomem *hdrp;
1079 cdkctrl_t __iomem *cp;
1080 unsigned char __iomem *bits;
1081 unsigned long flags;
1085 * Slave is already closing this port. This can happen if a hangup
1086 * occurs on this port.
1089 wait_event_interruptible(portp->raw_wait,
1090 !test_bit(ST_CLOSING, &portp->state));
1091 if (signal_pending(current)) {
1092 return -ERESTARTSYS;
1097 * Write the close command into shared memory.
1099 spin_lock_irqsave(&brd_lock, flags);
1101 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1102 writel(arg, &cp->closearg);
1103 writeb(1, &cp->close);
1104 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1105 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1107 writeb(readb(bits) |portp->portbit, bits);
1110 set_bit(ST_CLOSING, &portp->state);
1111 spin_unlock_irqrestore(&brd_lock, flags);
1117 * Slave is in action, so now we must wait for the open acknowledgment
1121 wait_event_interruptible(portp->raw_wait,
1122 !test_bit(ST_CLOSING, &portp->state));
1123 if (signal_pending(current))
1126 if ((rc == 0) && (portp->rc != 0))
1131 /*****************************************************************************/
1134 * Send a command to the slave and wait for the response. This must
1135 * have user context (it sleeps). This routine is generic in that it
1136 * can send any type of command. Its purpose is to wait for that command
1137 * to complete (as opposed to initiating the command then returning).
1140 static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
1142 wait_event_interruptible(portp->raw_wait,
1143 !test_bit(ST_CMDING, &portp->state));
1144 if (signal_pending(current))
1145 return -ERESTARTSYS;
1147 stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
1149 wait_event_interruptible(portp->raw_wait,
1150 !test_bit(ST_CMDING, &portp->state));
1151 if (signal_pending(current))
1152 return -ERESTARTSYS;
1159 /*****************************************************************************/
1162 * Send the termios settings for this port to the slave. This sleeps
1163 * waiting for the command to complete - so must have user context.
1166 static int stli_setport(struct stliport *portp)
1168 struct stlibrd *brdp;
1173 if (portp->tty == NULL)
1175 if (portp->brdnr >= stli_nrbrds)
1177 brdp = stli_brds[portp->brdnr];
1181 stli_mkasyport(portp, &aport, portp->tty->termios);
1182 return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0));
1185 /*****************************************************************************/
1188 * Possibly need to wait for carrier (DCD signal) to come high. Say
1189 * maybe because if we are clocal then we don't need to wait...
1192 static int stli_waitcarrier(struct stlibrd *brdp, struct stliport *portp, struct file *filp)
1194 unsigned long flags;
1200 if (portp->tty->termios->c_cflag & CLOCAL)
1203 spin_lock_irqsave(&stli_lock, flags);
1204 portp->openwaitcnt++;
1205 if (! tty_hung_up_p(filp))
1207 spin_unlock_irqrestore(&stli_lock, flags);
1210 stli_mkasysigs(&portp->asig, 1, 1);
1211 if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS,
1212 &portp->asig, sizeof(asysigs_t), 0)) < 0)
1214 if (tty_hung_up_p(filp) ||
1215 ((portp->flags & ASYNC_INITIALIZED) == 0)) {
1216 if (portp->flags & ASYNC_HUP_NOTIFY)
1222 if (((portp->flags & ASYNC_CLOSING) == 0) &&
1223 (doclocal || (portp->sigs & TIOCM_CD))) {
1226 if (signal_pending(current)) {
1230 interruptible_sleep_on(&portp->open_wait);
1233 spin_lock_irqsave(&stli_lock, flags);
1234 if (! tty_hung_up_p(filp))
1236 portp->openwaitcnt--;
1237 spin_unlock_irqrestore(&stli_lock, flags);
1242 /*****************************************************************************/
1245 * Write routine. Take the data and put it in the shared memory ring
1246 * queue. If port is not already sending chars then need to mark the
1247 * service bits for this port.
1250 static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count)
1252 cdkasy_t __iomem *ap;
1253 cdkhdr_t __iomem *hdrp;
1254 unsigned char __iomem *bits;
1255 unsigned char __iomem *shbuf;
1256 unsigned char *chbuf;
1257 struct stliport *portp;
1258 struct stlibrd *brdp;
1259 unsigned int len, stlen, head, tail, size;
1260 unsigned long flags;
1262 if (tty == stli_txcooktty)
1263 stli_flushchars(tty);
1264 portp = tty->driver_data;
1267 if (portp->brdnr >= stli_nrbrds)
1269 brdp = stli_brds[portp->brdnr];
1272 chbuf = (unsigned char *) buf;
1275 * All data is now local, shove as much as possible into shared memory.
1277 spin_lock_irqsave(&brd_lock, flags);
1279 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1280 head = (unsigned int) readw(&ap->txq.head);
1281 tail = (unsigned int) readw(&ap->txq.tail);
1282 if (tail != ((unsigned int) readw(&ap->txq.tail)))
1283 tail = (unsigned int) readw(&ap->txq.tail);
1284 size = portp->txsize;
1286 len = size - (head - tail) - 1;
1287 stlen = size - head;
1289 len = tail - head - 1;
1293 len = min(len, (unsigned int)count);
1295 shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset);
1298 stlen = min(len, stlen);
1299 memcpy_toio(shbuf + head, chbuf, stlen);
1310 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1311 writew(head, &ap->txq.head);
1312 if (test_bit(ST_TXBUSY, &portp->state)) {
1313 if (readl(&ap->changed.data) & DT_TXEMPTY)
1314 writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
1316 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1317 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1319 writeb(readb(bits) | portp->portbit, bits);
1320 set_bit(ST_TXBUSY, &portp->state);
1322 spin_unlock_irqrestore(&brd_lock, flags);
1327 /*****************************************************************************/
1330 * Output a single character. We put it into a temporary local buffer
1331 * (for speed) then write out that buffer when the flushchars routine
1332 * is called. There is a safety catch here so that if some other port
1333 * writes chars before the current buffer has been, then we write them
1334 * first them do the new ports.
1337 static void stli_putchar(struct tty_struct *tty, unsigned char ch)
1339 if (tty != stli_txcooktty) {
1340 if (stli_txcooktty != NULL)
1341 stli_flushchars(stli_txcooktty);
1342 stli_txcooktty = tty;
1345 stli_txcookbuf[stli_txcooksize++] = ch;
1348 /*****************************************************************************/
1351 * Transfer characters from the local TX cooking buffer to the board.
1352 * We sort of ignore the tty that gets passed in here. We rely on the
1353 * info stored with the TX cook buffer to tell us which port to flush
1354 * the data on. In any case we clean out the TX cook buffer, for re-use
1358 static void stli_flushchars(struct tty_struct *tty)
1360 cdkhdr_t __iomem *hdrp;
1361 unsigned char __iomem *bits;
1362 cdkasy_t __iomem *ap;
1363 struct tty_struct *cooktty;
1364 struct stliport *portp;
1365 struct stlibrd *brdp;
1366 unsigned int len, stlen, head, tail, size, count, cooksize;
1368 unsigned char __iomem *shbuf;
1369 unsigned long flags;
1371 cooksize = stli_txcooksize;
1372 cooktty = stli_txcooktty;
1373 stli_txcooksize = 0;
1374 stli_txcookrealsize = 0;
1375 stli_txcooktty = NULL;
1379 if (cooktty == NULL)
1386 portp = tty->driver_data;
1389 if (portp->brdnr >= stli_nrbrds)
1391 brdp = stli_brds[portp->brdnr];
1395 spin_lock_irqsave(&brd_lock, flags);
1398 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1399 head = (unsigned int) readw(&ap->txq.head);
1400 tail = (unsigned int) readw(&ap->txq.tail);
1401 if (tail != ((unsigned int) readw(&ap->txq.tail)))
1402 tail = (unsigned int) readw(&ap->txq.tail);
1403 size = portp->txsize;
1405 len = size - (head - tail) - 1;
1406 stlen = size - head;
1408 len = tail - head - 1;
1412 len = min(len, cooksize);
1414 shbuf = EBRDGETMEMPTR(brdp, portp->txoffset);
1415 buf = stli_txcookbuf;
1418 stlen = min(len, stlen);
1419 memcpy_toio(shbuf + head, buf, stlen);
1430 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1431 writew(head, &ap->txq.head);
1433 if (test_bit(ST_TXBUSY, &portp->state)) {
1434 if (readl(&ap->changed.data) & DT_TXEMPTY)
1435 writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
1437 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1438 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1440 writeb(readb(bits) | portp->portbit, bits);
1441 set_bit(ST_TXBUSY, &portp->state);
1444 spin_unlock_irqrestore(&brd_lock, flags);
1447 /*****************************************************************************/
1449 static int stli_writeroom(struct tty_struct *tty)
1451 cdkasyrq_t __iomem *rp;
1452 struct stliport *portp;
1453 struct stlibrd *brdp;
1454 unsigned int head, tail, len;
1455 unsigned long flags;
1457 if (tty == stli_txcooktty) {
1458 if (stli_txcookrealsize != 0) {
1459 len = stli_txcookrealsize - stli_txcooksize;
1464 portp = tty->driver_data;
1467 if (portp->brdnr >= stli_nrbrds)
1469 brdp = stli_brds[portp->brdnr];
1473 spin_lock_irqsave(&brd_lock, flags);
1475 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1476 head = (unsigned int) readw(&rp->head);
1477 tail = (unsigned int) readw(&rp->tail);
1478 if (tail != ((unsigned int) readw(&rp->tail)))
1479 tail = (unsigned int) readw(&rp->tail);
1480 len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head);
1483 spin_unlock_irqrestore(&brd_lock, flags);
1485 if (tty == stli_txcooktty) {
1486 stli_txcookrealsize = len;
1487 len -= stli_txcooksize;
1492 /*****************************************************************************/
1495 * Return the number of characters in the transmit buffer. Normally we
1496 * will return the number of chars in the shared memory ring queue.
1497 * We need to kludge around the case where the shared memory buffer is
1498 * empty but not all characters have drained yet, for this case just
1499 * return that there is 1 character in the buffer!
1502 static int stli_charsinbuffer(struct tty_struct *tty)
1504 cdkasyrq_t __iomem *rp;
1505 struct stliport *portp;
1506 struct stlibrd *brdp;
1507 unsigned int head, tail, len;
1508 unsigned long flags;
1510 if (tty == stli_txcooktty)
1511 stli_flushchars(tty);
1512 portp = tty->driver_data;
1515 if (portp->brdnr >= stli_nrbrds)
1517 brdp = stli_brds[portp->brdnr];
1521 spin_lock_irqsave(&brd_lock, flags);
1523 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1524 head = (unsigned int) readw(&rp->head);
1525 tail = (unsigned int) readw(&rp->tail);
1526 if (tail != ((unsigned int) readw(&rp->tail)))
1527 tail = (unsigned int) readw(&rp->tail);
1528 len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head));
1529 if ((len == 0) && test_bit(ST_TXBUSY, &portp->state))
1532 spin_unlock_irqrestore(&brd_lock, flags);
1537 /*****************************************************************************/
1540 * Generate the serial struct info.
1543 static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp)
1545 struct serial_struct sio;
1546 struct stlibrd *brdp;
1548 memset(&sio, 0, sizeof(struct serial_struct));
1549 sio.type = PORT_UNKNOWN;
1550 sio.line = portp->portnr;
1552 sio.flags = portp->flags;
1553 sio.baud_base = portp->baud_base;
1554 sio.close_delay = portp->close_delay;
1555 sio.closing_wait = portp->closing_wait;
1556 sio.custom_divisor = portp->custom_divisor;
1557 sio.xmit_fifo_size = 0;
1560 brdp = stli_brds[portp->brdnr];
1562 sio.port = brdp->iobase;
1564 return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ?
1568 /*****************************************************************************/
1571 * Set port according to the serial struct info.
1572 * At this point we do not do any auto-configure stuff, so we will
1573 * just quietly ignore any requests to change irq, etc.
1576 static int stli_setserial(struct stliport *portp, struct serial_struct __user *sp)
1578 struct serial_struct sio;
1581 if (copy_from_user(&sio, sp, sizeof(struct serial_struct)))
1583 if (!capable(CAP_SYS_ADMIN)) {
1584 if ((sio.baud_base != portp->baud_base) ||
1585 (sio.close_delay != portp->close_delay) ||
1586 ((sio.flags & ~ASYNC_USR_MASK) !=
1587 (portp->flags & ~ASYNC_USR_MASK)))
1591 portp->flags = (portp->flags & ~ASYNC_USR_MASK) |
1592 (sio.flags & ASYNC_USR_MASK);
1593 portp->baud_base = sio.baud_base;
1594 portp->close_delay = sio.close_delay;
1595 portp->closing_wait = sio.closing_wait;
1596 portp->custom_divisor = sio.custom_divisor;
1598 if ((rc = stli_setport(portp)) < 0)
1603 /*****************************************************************************/
1605 static int stli_tiocmget(struct tty_struct *tty, struct file *file)
1607 struct stliport *portp = tty->driver_data;
1608 struct stlibrd *brdp;
1613 if (portp->brdnr >= stli_nrbrds)
1615 brdp = stli_brds[portp->brdnr];
1618 if (tty->flags & (1 << TTY_IO_ERROR))
1621 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS,
1622 &portp->asig, sizeof(asysigs_t), 1)) < 0)
1625 return stli_mktiocm(portp->asig.sigvalue);
1628 static int stli_tiocmset(struct tty_struct *tty, struct file *file,
1629 unsigned int set, unsigned int clear)
1631 struct stliport *portp = tty->driver_data;
1632 struct stlibrd *brdp;
1633 int rts = -1, dtr = -1;
1637 if (portp->brdnr >= stli_nrbrds)
1639 brdp = stli_brds[portp->brdnr];
1642 if (tty->flags & (1 << TTY_IO_ERROR))
1645 if (set & TIOCM_RTS)
1647 if (set & TIOCM_DTR)
1649 if (clear & TIOCM_RTS)
1651 if (clear & TIOCM_DTR)
1654 stli_mkasysigs(&portp->asig, dtr, rts);
1656 return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1657 sizeof(asysigs_t), 0);
1660 static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg)
1662 struct stliport *portp;
1663 struct stlibrd *brdp;
1666 void __user *argp = (void __user *)arg;
1668 portp = tty->driver_data;
1671 if (portp->brdnr >= stli_nrbrds)
1673 brdp = stli_brds[portp->brdnr];
1677 if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
1678 (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) {
1679 if (tty->flags & (1 << TTY_IO_ERROR))
1687 rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0),
1688 (unsigned __user *) arg);
1691 if ((rc = get_user(ival, (unsigned __user *) arg)) == 0)
1692 tty->termios->c_cflag =
1693 (tty->termios->c_cflag & ~CLOCAL) |
1694 (ival ? CLOCAL : 0);
1697 rc = stli_getserial(portp, argp);
1700 rc = stli_setserial(portp, argp);
1703 rc = put_user(portp->pflag, (unsigned __user *)argp);
1706 if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0)
1707 stli_setport(portp);
1709 case COM_GETPORTSTATS:
1710 rc = stli_getportstats(portp, argp);
1712 case COM_CLRPORTSTATS:
1713 rc = stli_clrportstats(portp, argp);
1719 case TIOCSERGSTRUCT:
1720 case TIOCSERGETMULTI:
1721 case TIOCSERSETMULTI:
1730 /*****************************************************************************/
1733 * This routine assumes that we have user context and can sleep.
1734 * Looks like it is true for the current ttys implementation..!!
1737 static void stli_settermios(struct tty_struct *tty, struct ktermios *old)
1739 struct stliport *portp;
1740 struct stlibrd *brdp;
1741 struct ktermios *tiosp;
1746 portp = tty->driver_data;
1749 if (portp->brdnr >= stli_nrbrds)
1751 brdp = stli_brds[portp->brdnr];
1755 tiosp = tty->termios;
1757 stli_mkasyport(portp, &aport, tiosp);
1758 stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0);
1759 stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1);
1760 stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1761 sizeof(asysigs_t), 0);
1762 if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0))
1763 tty->hw_stopped = 0;
1764 if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL))
1765 wake_up_interruptible(&portp->open_wait);
1768 /*****************************************************************************/
1771 * Attempt to flow control who ever is sending us data. We won't really
1772 * do any flow control action here. We can't directly, and even if we
1773 * wanted to we would have to send a command to the slave. The slave
1774 * knows how to flow control, and will do so when its buffers reach its
1775 * internal high water marks. So what we will do is set a local state
1776 * bit that will stop us sending any RX data up from the poll routine
1777 * (which is the place where RX data from the slave is handled).
1780 static void stli_throttle(struct tty_struct *tty)
1782 struct stliport *portp = tty->driver_data;
1785 set_bit(ST_RXSTOP, &portp->state);
1788 /*****************************************************************************/
1791 * Unflow control the device sending us data... That means that all
1792 * we have to do is clear the RXSTOP state bit. The next poll call
1793 * will then be able to pass the RX data back up.
1796 static void stli_unthrottle(struct tty_struct *tty)
1798 struct stliport *portp = tty->driver_data;
1801 clear_bit(ST_RXSTOP, &portp->state);
1804 /*****************************************************************************/
1807 * Stop the transmitter.
1810 static void stli_stop(struct tty_struct *tty)
1814 /*****************************************************************************/
1817 * Start the transmitter again.
1820 static void stli_start(struct tty_struct *tty)
1824 /*****************************************************************************/
1827 * Scheduler called hang up routine. This is called from the scheduler,
1828 * not direct from the driver "poll" routine. We can't call it there
1829 * since the real local hangup code will enable/disable the board and
1830 * other things that we can't do while handling the poll. Much easier
1831 * to deal with it some time later (don't really care when, hangups
1832 * aren't that time critical).
1835 static void stli_dohangup(struct work_struct *ugly_api)
1837 struct stliport *portp = container_of(ugly_api, struct stliport, tqhangup);
1838 if (portp->tty != NULL) {
1839 tty_hangup(portp->tty);
1843 /*****************************************************************************/
1846 * Hangup this port. This is pretty much like closing the port, only
1847 * a little more brutal. No waiting for data to drain. Shutdown the
1848 * port and maybe drop signals. This is rather tricky really. We want
1849 * to close the port as well.
1852 static void stli_hangup(struct tty_struct *tty)
1854 struct stliport *portp;
1855 struct stlibrd *brdp;
1856 unsigned long flags;
1858 portp = tty->driver_data;
1861 if (portp->brdnr >= stli_nrbrds)
1863 brdp = stli_brds[portp->brdnr];
1867 portp->flags &= ~ASYNC_INITIALIZED;
1869 if (!test_bit(ST_CLOSING, &portp->state))
1870 stli_rawclose(brdp, portp, 0, 0);
1872 spin_lock_irqsave(&stli_lock, flags);
1873 if (tty->termios->c_cflag & HUPCL) {
1874 stli_mkasysigs(&portp->asig, 0, 0);
1875 if (test_bit(ST_CMDING, &portp->state)) {
1876 set_bit(ST_DOSIGS, &portp->state);
1877 set_bit(ST_DOFLUSHTX, &portp->state);
1878 set_bit(ST_DOFLUSHRX, &portp->state);
1880 stli_sendcmd(brdp, portp, A_SETSIGNALSF,
1881 &portp->asig, sizeof(asysigs_t), 0);
1885 clear_bit(ST_TXBUSY, &portp->state);
1886 clear_bit(ST_RXSTOP, &portp->state);
1887 set_bit(TTY_IO_ERROR, &tty->flags);
1889 portp->flags &= ~ASYNC_NORMAL_ACTIVE;
1890 portp->refcount = 0;
1891 spin_unlock_irqrestore(&stli_lock, flags);
1893 wake_up_interruptible(&portp->open_wait);
1896 /*****************************************************************************/
1899 * Flush characters from the lower buffer. We may not have user context
1900 * so we cannot sleep waiting for it to complete. Also we need to check
1901 * if there is chars for this port in the TX cook buffer, and flush them
1905 static void stli_flushbuffer(struct tty_struct *tty)
1907 struct stliport *portp;
1908 struct stlibrd *brdp;
1909 unsigned long ftype, flags;
1911 portp = tty->driver_data;
1914 if (portp->brdnr >= stli_nrbrds)
1916 brdp = stli_brds[portp->brdnr];
1920 spin_lock_irqsave(&brd_lock, flags);
1921 if (tty == stli_txcooktty) {
1922 stli_txcooktty = NULL;
1923 stli_txcooksize = 0;
1924 stli_txcookrealsize = 0;
1926 if (test_bit(ST_CMDING, &portp->state)) {
1927 set_bit(ST_DOFLUSHTX, &portp->state);
1930 if (test_bit(ST_DOFLUSHRX, &portp->state)) {
1932 clear_bit(ST_DOFLUSHRX, &portp->state);
1934 __stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0);
1936 spin_unlock_irqrestore(&brd_lock, flags);
1940 /*****************************************************************************/
1942 static void stli_breakctl(struct tty_struct *tty, int state)
1944 struct stlibrd *brdp;
1945 struct stliport *portp;
1948 portp = tty->driver_data;
1951 if (portp->brdnr >= stli_nrbrds)
1953 brdp = stli_brds[portp->brdnr];
1957 arg = (state == -1) ? BREAKON : BREAKOFF;
1958 stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0);
1961 /*****************************************************************************/
1963 static void stli_waituntilsent(struct tty_struct *tty, int timeout)
1965 struct stliport *portp;
1970 portp = tty->driver_data;
1976 tend = jiffies + timeout;
1978 while (test_bit(ST_TXBUSY, &portp->state)) {
1979 if (signal_pending(current))
1981 msleep_interruptible(20);
1982 if (time_after_eq(jiffies, tend))
1987 /*****************************************************************************/
1989 static void stli_sendxchar(struct tty_struct *tty, char ch)
1991 struct stlibrd *brdp;
1992 struct stliport *portp;
1995 portp = tty->driver_data;
1998 if (portp->brdnr >= stli_nrbrds)
2000 brdp = stli_brds[portp->brdnr];
2004 memset(&actrl, 0, sizeof(asyctrl_t));
2005 if (ch == STOP_CHAR(tty)) {
2006 actrl.rxctrl = CT_STOPFLOW;
2007 } else if (ch == START_CHAR(tty)) {
2008 actrl.rxctrl = CT_STARTFLOW;
2010 actrl.txctrl = CT_SENDCHR;
2013 stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
2016 /*****************************************************************************/
2021 * Format info for a specified port. The line is deliberately limited
2022 * to 80 characters. (If it is too long it will be truncated, if too
2023 * short then padded with spaces).
2026 static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos)
2031 rc = stli_portcmdstats(portp);
2034 if (brdp->state & BST_STARTED) {
2035 switch (stli_comstats.hwid) {
2036 case 0: uart = "2681"; break;
2037 case 1: uart = "SC26198"; break;
2038 default:uart = "CD1400"; break;
2043 sp += sprintf(sp, "%d: uart:%s ", portnr, uart);
2045 if ((brdp->state & BST_STARTED) && (rc >= 0)) {
2046 sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal,
2047 (int) stli_comstats.rxtotal);
2049 if (stli_comstats.rxframing)
2050 sp += sprintf(sp, " fe:%d",
2051 (int) stli_comstats.rxframing);
2052 if (stli_comstats.rxparity)
2053 sp += sprintf(sp, " pe:%d",
2054 (int) stli_comstats.rxparity);
2055 if (stli_comstats.rxbreaks)
2056 sp += sprintf(sp, " brk:%d",
2057 (int) stli_comstats.rxbreaks);
2058 if (stli_comstats.rxoverrun)
2059 sp += sprintf(sp, " oe:%d",
2060 (int) stli_comstats.rxoverrun);
2062 cnt = sprintf(sp, "%s%s%s%s%s ",
2063 (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "",
2064 (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "",
2065 (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "",
2066 (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "",
2067 (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : "");
2072 for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++)
2075 pos[(MAXLINE - 2)] = '+';
2076 pos[(MAXLINE - 1)] = '\n';
2081 /*****************************************************************************/
2084 * Port info, read from the /proc file system.
2087 static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data)
2089 struct stlibrd *brdp;
2090 struct stliport *portp;
2091 unsigned int brdnr, portnr, totalport;
2100 pos += sprintf(pos, "%s: version %s", stli_drvtitle,
2102 while (pos < (page + MAXLINE - 1))
2109 * We scan through for each board, panel and port. The offset is
2110 * calculated on the fly, and irrelevant ports are skipped.
2112 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
2113 brdp = stli_brds[brdnr];
2116 if (brdp->state == 0)
2119 maxoff = curoff + (brdp->nrports * MAXLINE);
2120 if (off >= maxoff) {
2125 totalport = brdnr * STL_MAXPORTS;
2126 for (portnr = 0; (portnr < brdp->nrports); portnr++,
2128 portp = brdp->ports[portnr];
2131 if (off >= (curoff += MAXLINE))
2133 if ((pos - page + MAXLINE) > count)
2135 pos += stli_portinfo(brdp, portp, totalport, pos);
2146 /*****************************************************************************/
2149 * Generic send command routine. This will send a message to the slave,
2150 * of the specified type with the specified argument. Must be very
2151 * careful of data that will be copied out from shared memory -
2152 * containing command results. The command completion is all done from
2153 * a poll routine that does not have user context. Therefore you cannot
2154 * copy back directly into user space, or to the kernel stack of a
2155 * process. This routine does not sleep, so can be called from anywhere.
2157 * The caller must hold the brd_lock (see also stli_sendcmd the usual
2161 static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
2163 cdkhdr_t __iomem *hdrp;
2164 cdkctrl_t __iomem *cp;
2165 unsigned char __iomem *bits;
2167 if (test_bit(ST_CMDING, &portp->state)) {
2168 printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n",
2174 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
2176 memcpy_toio((void __iomem *) &(cp->args[0]), arg, size);
2179 portp->argsize = size;
2182 writel(0, &cp->status);
2183 writel(cmd, &cp->cmd);
2184 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2185 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
2187 writeb(readb(bits) | portp->portbit, bits);
2188 set_bit(ST_CMDING, &portp->state);
2192 static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
2194 unsigned long flags;
2196 spin_lock_irqsave(&brd_lock, flags);
2197 __stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
2198 spin_unlock_irqrestore(&brd_lock, flags);
2201 /*****************************************************************************/
2204 * Read data from shared memory. This assumes that the shared memory
2205 * is enabled and that interrupts are off. Basically we just empty out
2206 * the shared memory buffer into the tty buffer. Must be careful to
2207 * handle the case where we fill up the tty buffer, but still have
2208 * more chars to unload.
2211 static void stli_read(struct stlibrd *brdp, struct stliport *portp)
2213 cdkasyrq_t __iomem *rp;
2214 char __iomem *shbuf;
2215 struct tty_struct *tty;
2216 unsigned int head, tail, size;
2217 unsigned int len, stlen;
2219 if (test_bit(ST_RXSTOP, &portp->state))
2225 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2226 head = (unsigned int) readw(&rp->head);
2227 if (head != ((unsigned int) readw(&rp->head)))
2228 head = (unsigned int) readw(&rp->head);
2229 tail = (unsigned int) readw(&rp->tail);
2230 size = portp->rxsize;
2235 len = size - (tail - head);
2236 stlen = size - tail;
2239 len = tty_buffer_request_room(tty, len);
2241 shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset);
2244 unsigned char *cptr;
2246 stlen = min(len, stlen);
2247 tty_prepare_flip_string(tty, &cptr, stlen);
2248 memcpy_fromio(cptr, shbuf + tail, stlen);
2256 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2257 writew(tail, &rp->tail);
2260 set_bit(ST_RXING, &portp->state);
2262 tty_schedule_flip(tty);
2265 /*****************************************************************************/
2268 * Set up and carry out any delayed commands. There is only a small set
2269 * of slave commands that can be done "off-level". So it is not too
2270 * difficult to deal with them here.
2273 static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp)
2277 if (test_bit(ST_DOSIGS, &portp->state)) {
2278 if (test_bit(ST_DOFLUSHTX, &portp->state) &&
2279 test_bit(ST_DOFLUSHRX, &portp->state))
2280 cmd = A_SETSIGNALSF;
2281 else if (test_bit(ST_DOFLUSHTX, &portp->state))
2282 cmd = A_SETSIGNALSFTX;
2283 else if (test_bit(ST_DOFLUSHRX, &portp->state))
2284 cmd = A_SETSIGNALSFRX;
2287 clear_bit(ST_DOFLUSHTX, &portp->state);
2288 clear_bit(ST_DOFLUSHRX, &portp->state);
2289 clear_bit(ST_DOSIGS, &portp->state);
2290 memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig,
2292 writel(0, &cp->status);
2293 writel(cmd, &cp->cmd);
2294 set_bit(ST_CMDING, &portp->state);
2295 } else if (test_bit(ST_DOFLUSHTX, &portp->state) ||
2296 test_bit(ST_DOFLUSHRX, &portp->state)) {
2297 cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0);
2298 cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0);
2299 clear_bit(ST_DOFLUSHTX, &portp->state);
2300 clear_bit(ST_DOFLUSHRX, &portp->state);
2301 memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int));
2302 writel(0, &cp->status);
2303 writel(A_FLUSH, &cp->cmd);
2304 set_bit(ST_CMDING, &portp->state);
2308 /*****************************************************************************/
2311 * Host command service checking. This handles commands or messages
2312 * coming from the slave to the host. Must have board shared memory
2313 * enabled and interrupts off when called. Notice that by servicing the
2314 * read data last we don't need to change the shared memory pointer
2315 * during processing (which is a slow IO operation).
2316 * Return value indicates if this port is still awaiting actions from
2317 * the slave (like open, command, or even TX data being sent). If 0
2318 * then port is still busy, otherwise no longer busy.
2321 static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp)
2323 cdkasy_t __iomem *ap;
2324 cdkctrl_t __iomem *cp;
2325 struct tty_struct *tty;
2327 unsigned long oldsigs;
2330 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
2334 * Check if we are waiting for an open completion message.
2336 if (test_bit(ST_OPENING, &portp->state)) {
2337 rc = readl(&cp->openarg);
2338 if (readb(&cp->open) == 0 && rc != 0) {
2341 writel(0, &cp->openarg);
2343 clear_bit(ST_OPENING, &portp->state);
2344 wake_up_interruptible(&portp->raw_wait);
2349 * Check if we are waiting for a close completion message.
2351 if (test_bit(ST_CLOSING, &portp->state)) {
2352 rc = (int) readl(&cp->closearg);
2353 if (readb(&cp->close) == 0 && rc != 0) {
2356 writel(0, &cp->closearg);
2358 clear_bit(ST_CLOSING, &portp->state);
2359 wake_up_interruptible(&portp->raw_wait);
2364 * Check if we are waiting for a command completion message. We may
2365 * need to copy out the command results associated with this command.
2367 if (test_bit(ST_CMDING, &portp->state)) {
2368 rc = readl(&cp->status);
2369 if (readl(&cp->cmd) == 0 && rc != 0) {
2372 if (portp->argp != NULL) {
2373 memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]),
2377 writel(0, &cp->status);
2379 clear_bit(ST_CMDING, &portp->state);
2380 stli_dodelaycmd(portp, cp);
2381 wake_up_interruptible(&portp->raw_wait);
2386 * Check for any notification messages ready. This includes lots of
2387 * different types of events - RX chars ready, RX break received,
2388 * TX data low or empty in the slave, modem signals changed state.
2397 if (nt.signal & SG_DCD) {
2398 oldsigs = portp->sigs;
2399 portp->sigs = stli_mktiocm(nt.sigvalue);
2400 clear_bit(ST_GETSIGS, &portp->state);
2401 if ((portp->sigs & TIOCM_CD) &&
2402 ((oldsigs & TIOCM_CD) == 0))
2403 wake_up_interruptible(&portp->open_wait);
2404 if ((oldsigs & TIOCM_CD) &&
2405 ((portp->sigs & TIOCM_CD) == 0)) {
2406 if (portp->flags & ASYNC_CHECK_CD) {
2408 schedule_work(&portp->tqhangup);
2413 if (nt.data & DT_TXEMPTY)
2414 clear_bit(ST_TXBUSY, &portp->state);
2415 if (nt.data & (DT_TXEMPTY | DT_TXLOW)) {
2422 if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) {
2424 tty_insert_flip_char(tty, 0, TTY_BREAK);
2425 if (portp->flags & ASYNC_SAK) {
2429 tty_schedule_flip(tty);
2433 if (nt.data & DT_RXBUSY) {
2435 stli_read(brdp, portp);
2440 * It might seem odd that we are checking for more RX chars here.
2441 * But, we need to handle the case where the tty buffer was previously
2442 * filled, but we had more characters to pass up. The slave will not
2443 * send any more RX notify messages until the RX buffer has been emptied.
2444 * But it will leave the service bits on (since the buffer is not empty).
2445 * So from here we can try to process more RX chars.
2447 if ((!donerx) && test_bit(ST_RXING, &portp->state)) {
2448 clear_bit(ST_RXING, &portp->state);
2449 stli_read(brdp, portp);
2452 return((test_bit(ST_OPENING, &portp->state) ||
2453 test_bit(ST_CLOSING, &portp->state) ||
2454 test_bit(ST_CMDING, &portp->state) ||
2455 test_bit(ST_TXBUSY, &portp->state) ||
2456 test_bit(ST_RXING, &portp->state)) ? 0 : 1);
2459 /*****************************************************************************/
2462 * Service all ports on a particular board. Assumes that the boards
2463 * shared memory is enabled, and that the page pointer is pointed
2464 * at the cdk header structure.
2467 static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp)
2469 struct stliport *portp;
2470 unsigned char hostbits[(STL_MAXCHANS / 8) + 1];
2471 unsigned char slavebits[(STL_MAXCHANS / 8) + 1];
2472 unsigned char __iomem *slavep;
2473 int bitpos, bitat, bitsize;
2474 int channr, nrdevs, slavebitchange;
2476 bitsize = brdp->bitsize;
2477 nrdevs = brdp->nrdevs;
2480 * Check if slave wants any service. Basically we try to do as
2481 * little work as possible here. There are 2 levels of service
2482 * bits. So if there is nothing to do we bail early. We check
2483 * 8 service bits at a time in the inner loop, so we can bypass
2484 * the lot if none of them want service.
2486 memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset),
2489 memset(&slavebits[0], 0, bitsize);
2492 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2493 if (hostbits[bitpos] == 0)
2495 channr = bitpos * 8;
2496 for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) {
2497 if (hostbits[bitpos] & bitat) {
2498 portp = brdp->ports[(channr - 1)];
2499 if (stli_hostcmd(brdp, portp)) {
2501 slavebits[bitpos] |= bitat;
2508 * If any of the ports are no longer busy then update them in the
2509 * slave request bits. We need to do this after, since a host port
2510 * service may initiate more slave requests.
2512 if (slavebitchange) {
2513 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2514 slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset;
2515 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2516 if (readb(slavebits + bitpos))
2517 writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos);
2522 /*****************************************************************************/
2525 * Driver poll routine. This routine polls the boards in use and passes
2526 * messages back up to host when necessary. This is actually very
2527 * CPU efficient, since we will always have the kernel poll clock, it
2528 * adds only a few cycles when idle (since board service can be
2529 * determined very easily), but when loaded generates no interrupts
2530 * (with their expensive associated context change).
2533 static void stli_poll(unsigned long arg)
2535 cdkhdr_t __iomem *hdrp;
2536 struct stlibrd *brdp;
2539 mod_timer(&stli_timerlist, STLI_TIMEOUT);
2542 * Check each board and do any servicing required.
2544 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
2545 brdp = stli_brds[brdnr];
2548 if ((brdp->state & BST_STARTED) == 0)
2551 spin_lock(&brd_lock);
2553 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2554 if (readb(&hdrp->hostreq))
2555 stli_brdpoll(brdp, hdrp);
2557 spin_unlock(&brd_lock);
2561 /*****************************************************************************/
2564 * Translate the termios settings into the port setting structure of
2568 static void stli_mkasyport(struct stliport *portp, asyport_t *pp, struct ktermios *tiosp)
2570 memset(pp, 0, sizeof(asyport_t));
2573 * Start of by setting the baud, char size, parity and stop bit info.
2575 pp->baudout = tty_get_baud_rate(portp->tty);
2576 if ((tiosp->c_cflag & CBAUD) == B38400) {
2577 if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
2578 pp->baudout = 57600;
2579 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
2580 pp->baudout = 115200;
2581 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
2582 pp->baudout = 230400;
2583 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
2584 pp->baudout = 460800;
2585 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)
2586 pp->baudout = (portp->baud_base / portp->custom_divisor);
2588 if (pp->baudout > STL_MAXBAUD)
2589 pp->baudout = STL_MAXBAUD;
2590 pp->baudin = pp->baudout;
2592 switch (tiosp->c_cflag & CSIZE) {
2607 if (tiosp->c_cflag & CSTOPB)
2608 pp->stopbs = PT_STOP2;
2610 pp->stopbs = PT_STOP1;
2612 if (tiosp->c_cflag & PARENB) {
2613 if (tiosp->c_cflag & PARODD)
2614 pp->parity = PT_ODDPARITY;
2616 pp->parity = PT_EVENPARITY;
2618 pp->parity = PT_NOPARITY;
2622 * Set up any flow control options enabled.
2624 if (tiosp->c_iflag & IXON) {
2626 if (tiosp->c_iflag & IXANY)
2627 pp->flow |= F_IXANY;
2629 if (tiosp->c_cflag & CRTSCTS)
2630 pp->flow |= (F_RTSFLOW | F_CTSFLOW);
2632 pp->startin = tiosp->c_cc[VSTART];
2633 pp->stopin = tiosp->c_cc[VSTOP];
2634 pp->startout = tiosp->c_cc[VSTART];
2635 pp->stopout = tiosp->c_cc[VSTOP];
2638 * Set up the RX char marking mask with those RX error types we must
2639 * catch. We can get the slave to help us out a little here, it will
2640 * ignore parity errors and breaks for us, and mark parity errors in
2643 if (tiosp->c_iflag & IGNPAR)
2644 pp->iflag |= FI_IGNRXERRS;
2645 if (tiosp->c_iflag & IGNBRK)
2646 pp->iflag |= FI_IGNBREAK;
2648 portp->rxmarkmsk = 0;
2649 if (tiosp->c_iflag & (INPCK | PARMRK))
2650 pp->iflag |= FI_1MARKRXERRS;
2651 if (tiosp->c_iflag & BRKINT)
2652 portp->rxmarkmsk |= BRKINT;
2655 * Set up clocal processing as required.
2657 if (tiosp->c_cflag & CLOCAL)
2658 portp->flags &= ~ASYNC_CHECK_CD;
2660 portp->flags |= ASYNC_CHECK_CD;
2663 * Transfer any persistent flags into the asyport structure.
2665 pp->pflag = (portp->pflag & 0xffff);
2666 pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0;
2667 pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0;
2668 pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0;
2671 /*****************************************************************************/
2674 * Construct a slave signals structure for setting the DTR and RTS
2675 * signals as specified.
2678 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts)
2680 memset(sp, 0, sizeof(asysigs_t));
2682 sp->signal |= SG_DTR;
2683 sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0);
2686 sp->signal |= SG_RTS;
2687 sp->sigvalue |= ((rts > 0) ? SG_RTS : 0);
2691 /*****************************************************************************/
2694 * Convert the signals returned from the slave into a local TIOCM type
2695 * signals value. We keep them locally in TIOCM format.
2698 static long stli_mktiocm(unsigned long sigvalue)
2701 tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0);
2702 tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0);
2703 tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0);
2704 tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0);
2705 tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0);
2706 tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0);
2710 /*****************************************************************************/
2713 * All panels and ports actually attached have been worked out. All
2714 * we need to do here is set up the appropriate per port data structures.
2717 static int stli_initports(struct stlibrd *brdp)
2719 struct stliport *portp;
2720 unsigned int i, panelnr, panelport;
2722 for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) {
2723 portp = kzalloc(sizeof(struct stliport), GFP_KERNEL);
2725 printk("STALLION: failed to allocate port structure\n");
2729 portp->magic = STLI_PORTMAGIC;
2731 portp->brdnr = brdp->brdnr;
2732 portp->panelnr = panelnr;
2733 portp->baud_base = STL_BAUDBASE;
2734 portp->close_delay = STL_CLOSEDELAY;
2735 portp->closing_wait = 30 * HZ;
2736 INIT_WORK(&portp->tqhangup, stli_dohangup);
2737 init_waitqueue_head(&portp->open_wait);
2738 init_waitqueue_head(&portp->close_wait);
2739 init_waitqueue_head(&portp->raw_wait);
2741 if (panelport >= brdp->panels[panelnr]) {
2745 brdp->ports[i] = portp;
2751 /*****************************************************************************/
2754 * All the following routines are board specific hardware operations.
2757 static void stli_ecpinit(struct stlibrd *brdp)
2759 unsigned long memconf;
2761 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
2763 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2766 memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT;
2767 outb(memconf, (brdp->iobase + ECP_ATMEMAR));
2770 /*****************************************************************************/
2772 static void stli_ecpenable(struct stlibrd *brdp)
2774 outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR));
2777 /*****************************************************************************/
2779 static void stli_ecpdisable(struct stlibrd *brdp)
2781 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2784 /*****************************************************************************/
2786 static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2791 if (offset > brdp->memsize) {
2792 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2793 "range at line=%d(%d), brd=%d\n",
2794 (int) offset, line, __LINE__, brdp->brdnr);
2798 ptr = brdp->membase + (offset % ECP_ATPAGESIZE);
2799 val = (unsigned char) (offset / ECP_ATPAGESIZE);
2801 outb(val, (brdp->iobase + ECP_ATMEMPR));
2805 /*****************************************************************************/
2807 static void stli_ecpreset(struct stlibrd *brdp)
2809 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
2811 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2815 /*****************************************************************************/
2817 static void stli_ecpintr(struct stlibrd *brdp)
2819 outb(0x1, brdp->iobase);
2822 /*****************************************************************************/
2825 * The following set of functions act on ECP EISA boards.
2828 static void stli_ecpeiinit(struct stlibrd *brdp)
2830 unsigned long memconf;
2832 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
2833 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
2835 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2838 memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL;
2839 outb(memconf, (brdp->iobase + ECP_EIMEMARL));
2840 memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH;
2841 outb(memconf, (brdp->iobase + ECP_EIMEMARH));
2844 /*****************************************************************************/
2846 static void stli_ecpeienable(struct stlibrd *brdp)
2848 outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR));
2851 /*****************************************************************************/
2853 static void stli_ecpeidisable(struct stlibrd *brdp)
2855 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2858 /*****************************************************************************/
2860 static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2865 if (offset > brdp->memsize) {
2866 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2867 "range at line=%d(%d), brd=%d\n",
2868 (int) offset, line, __LINE__, brdp->brdnr);
2872 ptr = brdp->membase + (offset % ECP_EIPAGESIZE);
2873 if (offset < ECP_EIPAGESIZE)
2876 val = ECP_EIENABLE | 0x40;
2878 outb(val, (brdp->iobase + ECP_EICONFR));
2882 /*****************************************************************************/
2884 static void stli_ecpeireset(struct stlibrd *brdp)
2886 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
2888 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2892 /*****************************************************************************/
2895 * The following set of functions act on ECP MCA boards.
2898 static void stli_ecpmcenable(struct stlibrd *brdp)
2900 outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR));
2903 /*****************************************************************************/
2905 static void stli_ecpmcdisable(struct stlibrd *brdp)
2907 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
2910 /*****************************************************************************/
2912 static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2917 if (offset > brdp->memsize) {
2918 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2919 "range at line=%d(%d), brd=%d\n",
2920 (int) offset, line, __LINE__, brdp->brdnr);
2924 ptr = brdp->membase + (offset % ECP_MCPAGESIZE);
2925 val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE;
2927 outb(val, (brdp->iobase + ECP_MCCONFR));
2931 /*****************************************************************************/
2933 static void stli_ecpmcreset(struct stlibrd *brdp)
2935 outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR));
2937 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
2941 /*****************************************************************************/
2944 * The following set of functions act on ECP PCI boards.
2947 static void stli_ecppciinit(struct stlibrd *brdp)
2949 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
2951 outb(0, (brdp->iobase + ECP_PCICONFR));
2955 /*****************************************************************************/
2957 static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2962 if (offset > brdp->memsize) {
2963 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2964 "range at line=%d(%d), board=%d\n",
2965 (int) offset, line, __LINE__, brdp->brdnr);
2969 ptr = brdp->membase + (offset % ECP_PCIPAGESIZE);
2970 val = (offset / ECP_PCIPAGESIZE) << 1;
2972 outb(val, (brdp->iobase + ECP_PCICONFR));
2976 /*****************************************************************************/
2978 static void stli_ecppcireset(struct stlibrd *brdp)
2980 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
2982 outb(0, (brdp->iobase + ECP_PCICONFR));
2986 /*****************************************************************************/
2989 * The following routines act on ONboards.
2992 static void stli_onbinit(struct stlibrd *brdp)
2994 unsigned long memconf;
2996 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
2998 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
3001 memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT;
3002 outb(memconf, (brdp->iobase + ONB_ATMEMAR));
3003 outb(0x1, brdp->iobase);
3007 /*****************************************************************************/
3009 static void stli_onbenable(struct stlibrd *brdp)
3011 outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR));
3014 /*****************************************************************************/
3016 static void stli_onbdisable(struct stlibrd *brdp)
3018 outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR));
3021 /*****************************************************************************/
3023 static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
3027 if (offset > brdp->memsize) {
3028 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3029 "range at line=%d(%d), brd=%d\n",
3030 (int) offset, line, __LINE__, brdp->brdnr);
3033 ptr = brdp->membase + (offset % ONB_ATPAGESIZE);
3038 /*****************************************************************************/
3040 static void stli_onbreset(struct stlibrd *brdp)
3042 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
3044 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
3048 /*****************************************************************************/
3051 * The following routines act on ONboard EISA.
3054 static void stli_onbeinit(struct stlibrd *brdp)
3056 unsigned long memconf;
3058 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
3059 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3061 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3064 memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL;
3065 outb(memconf, (brdp->iobase + ONB_EIMEMARL));
3066 memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH;
3067 outb(memconf, (brdp->iobase + ONB_EIMEMARH));
3068 outb(0x1, brdp->iobase);
3072 /*****************************************************************************/
3074 static void stli_onbeenable(struct stlibrd *brdp)
3076 outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR));
3079 /*****************************************************************************/
3081 static void stli_onbedisable(struct stlibrd *brdp)
3083 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3086 /*****************************************************************************/
3088 static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
3093 if (offset > brdp->memsize) {
3094 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3095 "range at line=%d(%d), brd=%d\n",
3096 (int) offset, line, __LINE__, brdp->brdnr);
3100 ptr = brdp->membase + (offset % ONB_EIPAGESIZE);
3101 if (offset < ONB_EIPAGESIZE)
3104 val = ONB_EIENABLE | 0x40;
3106 outb(val, (brdp->iobase + ONB_EICONFR));
3110 /*****************************************************************************/
3112 static void stli_onbereset(struct stlibrd *brdp)
3114 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3116 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3120 /*****************************************************************************/
3123 * The following routines act on Brumby boards.
3126 static void stli_bbyinit(struct stlibrd *brdp)
3128 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
3130 outb(0, (brdp->iobase + BBY_ATCONFR));
3132 outb(0x1, brdp->iobase);
3136 /*****************************************************************************/
3138 static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
3143 BUG_ON(offset > brdp->memsize);
3145 ptr = brdp->membase + (offset % BBY_PAGESIZE);
3146 val = (unsigned char) (offset / BBY_PAGESIZE);
3147 outb(val, (brdp->iobase + BBY_ATCONFR));
3151 /*****************************************************************************/
3153 static void stli_bbyreset(struct stlibrd *brdp)
3155 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
3157 outb(0, (brdp->iobase + BBY_ATCONFR));
3161 /*****************************************************************************/
3164 * The following routines act on original old Stallion boards.
3167 static void stli_stalinit(struct stlibrd *brdp)
3169 outb(0x1, brdp->iobase);
3173 /*****************************************************************************/
3175 static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
3177 BUG_ON(offset > brdp->memsize);
3178 return brdp->membase + (offset % STAL_PAGESIZE);
3181 /*****************************************************************************/
3183 static void stli_stalreset(struct stlibrd *brdp)
3187 vecp = (u32 __iomem *) (brdp->membase + 0x30);
3188 writel(0xffff0000, vecp);
3189 outb(0, brdp->iobase);
3193 /*****************************************************************************/
3196 * Try to find an ECP board and initialize it. This handles only ECP
3200 static int stli_initecp(struct stlibrd *brdp)
3203 cdkecpsig_t __iomem *sigsp;
3204 unsigned int status, nxtid;
3206 int retval, panelnr, nrports;
3208 if ((brdp->iobase == 0) || (brdp->memaddr == 0)) {
3213 brdp->iosize = ECP_IOSIZE;
3215 if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
3221 * Based on the specific board type setup the common vars to access
3222 * and enable shared memory. Set all board specific information now
3225 switch (brdp->brdtype) {
3227 brdp->memsize = ECP_MEMSIZE;
3228 brdp->pagesize = ECP_ATPAGESIZE;
3229 brdp->init = stli_ecpinit;
3230 brdp->enable = stli_ecpenable;
3231 brdp->reenable = stli_ecpenable;
3232 brdp->disable = stli_ecpdisable;
3233 brdp->getmemptr = stli_ecpgetmemptr;
3234 brdp->intr = stli_ecpintr;
3235 brdp->reset = stli_ecpreset;
3236 name = "serial(EC8/64)";
3240 brdp->memsize = ECP_MEMSIZE;
3241 brdp->pagesize = ECP_EIPAGESIZE;
3242 brdp->init = stli_ecpeiinit;
3243 brdp->enable = stli_ecpeienable;
3244 brdp->reenable = stli_ecpeienable;
3245 brdp->disable = stli_ecpeidisable;
3246 brdp->getmemptr = stli_ecpeigetmemptr;
3247 brdp->intr = stli_ecpintr;
3248 brdp->reset = stli_ecpeireset;
3249 name = "serial(EC8/64-EI)";
3253 brdp->memsize = ECP_MEMSIZE;
3254 brdp->pagesize = ECP_MCPAGESIZE;
3256 brdp->enable = stli_ecpmcenable;
3257 brdp->reenable = stli_ecpmcenable;
3258 brdp->disable = stli_ecpmcdisable;
3259 brdp->getmemptr = stli_ecpmcgetmemptr;
3260 brdp->intr = stli_ecpintr;
3261 brdp->reset = stli_ecpmcreset;
3262 name = "serial(EC8/64-MCA)";
3266 brdp->memsize = ECP_PCIMEMSIZE;
3267 brdp->pagesize = ECP_PCIPAGESIZE;
3268 brdp->init = stli_ecppciinit;
3269 brdp->enable = NULL;
3270 brdp->reenable = NULL;
3271 brdp->disable = NULL;
3272 brdp->getmemptr = stli_ecppcigetmemptr;
3273 brdp->intr = stli_ecpintr;
3274 brdp->reset = stli_ecppcireset;
3275 name = "serial(EC/RA-PCI)";
3284 * The per-board operations structure is all set up, so now let's go
3285 * and get the board operational. Firstly initialize board configuration
3286 * registers. Set the memory mapping info so we can get at the boards
3291 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
3292 if (brdp->membase == NULL) {
3298 * Now that all specific code is set up, enable the shared memory and
3299 * look for the a signature area that will tell us exactly what board
3300 * this is, and what it is connected to it.
3303 sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3304 memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t));
3307 if (sig.magic != cpu_to_le32(ECP_MAGIC)) {
3313 * Scan through the signature looking at the panels connected to the
3314 * board. Calculate the total number of ports as we go.
3316 for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) {
3317 status = sig.panelid[nxtid];
3318 if ((status & ECH_PNLIDMASK) != nxtid)
3321 brdp->panelids[panelnr] = status;
3322 nrports = (status & ECH_PNL16PORT) ? 16 : 8;
3323 if ((nrports == 16) && ((status & ECH_PNLXPID) == 0))
3325 brdp->panels[panelnr] = nrports;
3326 brdp->nrports += nrports;
3332 brdp->state |= BST_FOUND;
3335 iounmap(brdp->membase);
3336 brdp->membase = NULL;
3338 release_region(brdp->iobase, brdp->iosize);
3343 /*****************************************************************************/
3346 * Try to find an ONboard, Brumby or Stallion board and initialize it.
3347 * This handles only these board types.
3350 static int stli_initonb(struct stlibrd *brdp)
3353 cdkonbsig_t __iomem *sigsp;
3358 * Do a basic sanity check on the IO and memory addresses.
3360 if (brdp->iobase == 0 || brdp->memaddr == 0) {
3365 brdp->iosize = ONB_IOSIZE;
3367 if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
3373 * Based on the specific board type setup the common vars to access
3374 * and enable shared memory. Set all board specific information now
3377 switch (brdp->brdtype) {
3380 brdp->memsize = ONB_MEMSIZE;
3381 brdp->pagesize = ONB_ATPAGESIZE;
3382 brdp->init = stli_onbinit;
3383 brdp->enable = stli_onbenable;
3384 brdp->reenable = stli_onbenable;
3385 brdp->disable = stli_onbdisable;
3386 brdp->getmemptr = stli_onbgetmemptr;
3387 brdp->intr = stli_ecpintr;
3388 brdp->reset = stli_onbreset;
3389 if (brdp->memaddr > 0x100000)
3390 brdp->enabval = ONB_MEMENABHI;
3392 brdp->enabval = ONB_MEMENABLO;
3393 name = "serial(ONBoard)";
3397 brdp->memsize = ONB_EIMEMSIZE;
3398 brdp->pagesize = ONB_EIPAGESIZE;
3399 brdp->init = stli_onbeinit;
3400 brdp->enable = stli_onbeenable;
3401 brdp->reenable = stli_onbeenable;
3402 brdp->disable = stli_onbedisable;
3403 brdp->getmemptr = stli_onbegetmemptr;
3404 brdp->intr = stli_ecpintr;
3405 brdp->reset = stli_onbereset;
3406 name = "serial(ONBoard/E)";
3410 brdp->memsize = BBY_MEMSIZE;
3411 brdp->pagesize = BBY_PAGESIZE;
3412 brdp->init = stli_bbyinit;
3413 brdp->enable = NULL;
3414 brdp->reenable = NULL;
3415 brdp->disable = NULL;
3416 brdp->getmemptr = stli_bbygetmemptr;
3417 brdp->intr = stli_ecpintr;
3418 brdp->reset = stli_bbyreset;
3419 name = "serial(Brumby)";
3423 brdp->memsize = STAL_MEMSIZE;
3424 brdp->pagesize = STAL_PAGESIZE;
3425 brdp->init = stli_stalinit;
3426 brdp->enable = NULL;
3427 brdp->reenable = NULL;
3428 brdp->disable = NULL;
3429 brdp->getmemptr = stli_stalgetmemptr;
3430 brdp->intr = stli_ecpintr;
3431 brdp->reset = stli_stalreset;
3432 name = "serial(Stallion)";
3441 * The per-board operations structure is all set up, so now let's go
3442 * and get the board operational. Firstly initialize board configuration
3443 * registers. Set the memory mapping info so we can get at the boards
3448 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
3449 if (brdp->membase == NULL) {
3455 * Now that all specific code is set up, enable the shared memory and
3456 * look for the a signature area that will tell us exactly what board
3457 * this is, and how many ports.
3460 sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3461 memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t));
3464 if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) ||
3465 sig.magic1 != cpu_to_le16(ONB_MAGIC1) ||
3466 sig.magic2 != cpu_to_le16(ONB_MAGIC2) ||
3467 sig.magic3 != cpu_to_le16(ONB_MAGIC3)) {
3473 * Scan through the signature alive mask and calculate how many ports
3474 * there are on this board.
3480 for (i = 0; (i < 16); i++) {
3481 if (((sig.amask0 << i) & 0x8000) == 0)
3486 brdp->panels[0] = brdp->nrports;
3489 brdp->state |= BST_FOUND;
3492 iounmap(brdp->membase);
3493 brdp->membase = NULL;
3495 release_region(brdp->iobase, brdp->iosize);
3500 /*****************************************************************************/
3503 * Start up a running board. This routine is only called after the
3504 * code has been down loaded to the board and is operational. It will
3505 * read in the memory map, and get the show on the road...
3508 static int stli_startbrd(struct stlibrd *brdp)
3510 cdkhdr_t __iomem *hdrp;
3511 cdkmem_t __iomem *memp;
3512 cdkasy_t __iomem *ap;
3513 unsigned long flags;
3514 unsigned int portnr, nrdevs, i;
3515 struct stliport *portp;
3519 spin_lock_irqsave(&brd_lock, flags);
3521 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
3522 nrdevs = hdrp->nrdevs;
3525 printk("%s(%d): CDK version %d.%d.%d --> "
3526 "nrdevs=%d memp=%x hostp=%x slavep=%x\n",
3527 __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification),
3528 readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp),
3529 readl(&hdrp->slavep));
3532 if (nrdevs < (brdp->nrports + 1)) {
3533 printk(KERN_ERR "STALLION: slave failed to allocate memory for "
3534 "all devices, devices=%d\n", nrdevs);
3535 brdp->nrports = nrdevs - 1;
3537 brdp->nrdevs = nrdevs;
3538 brdp->hostoffset = hdrp->hostp - CDK_CDKADDR;
3539 brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR;
3540 brdp->bitsize = (nrdevs + 7) / 8;
3541 memoff = readl(&hdrp->memp);
3542 if (memoff > brdp->memsize) {
3543 printk(KERN_ERR "STALLION: corrupted shared memory region?\n");
3545 goto stli_donestartup;
3547 memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff);
3548 if (readw(&memp->dtype) != TYP_ASYNCTRL) {
3549 printk(KERN_ERR "STALLION: no slave control device found\n");
3550 goto stli_donestartup;
3555 * Cycle through memory allocation of each port. We are guaranteed to
3556 * have all ports inside the first page of slave window, so no need to
3557 * change pages while reading memory map.
3559 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) {
3560 if (readw(&memp->dtype) != TYP_ASYNC)
3562 portp = brdp->ports[portnr];
3566 portp->addr = readl(&memp->offset);
3567 portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs));
3568 portp->portidx = (unsigned char) (i / 8);
3569 portp->portbit = (unsigned char) (0x1 << (i % 8));
3572 writeb(0xff, &hdrp->slavereq);
3575 * For each port setup a local copy of the RX and TX buffer offsets
3576 * and sizes. We do this separate from the above, because we need to
3577 * move the shared memory page...
3579 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) {
3580 portp = brdp->ports[portnr];
3583 if (portp->addr == 0)
3585 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
3587 portp->rxsize = readw(&ap->rxq.size);
3588 portp->txsize = readw(&ap->txq.size);
3589 portp->rxoffset = readl(&ap->rxq.offset);
3590 portp->txoffset = readl(&ap->txq.offset);
3596 spin_unlock_irqrestore(&brd_lock, flags);
3599 brdp->state |= BST_STARTED;
3601 if (! stli_timeron) {
3603 mod_timer(&stli_timerlist, STLI_TIMEOUT);
3609 /*****************************************************************************/
3612 * Probe and initialize the specified board.
3615 static int __devinit stli_brdinit(struct stlibrd *brdp)
3619 switch (brdp->brdtype) {
3624 retval = stli_initecp(brdp);
3631 retval = stli_initonb(brdp);
3634 printk(KERN_ERR "STALLION: board=%d is unknown board "
3635 "type=%d\n", brdp->brdnr, brdp->brdtype);
3642 stli_initports(brdp);
3643 printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x "
3644 "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype],
3645 brdp->brdnr, brdp->iobase, (int) brdp->memaddr,
3646 brdp->nrpanels, brdp->nrports);
3650 #if STLI_EISAPROBE != 0
3651 /*****************************************************************************/
3654 * Probe around trying to find where the EISA boards shared memory
3655 * might be. This is a bit if hack, but it is the best we can do.
3658 static int stli_eisamemprobe(struct stlibrd *brdp)
3660 cdkecpsig_t ecpsig, __iomem *ecpsigp;
3661 cdkonbsig_t onbsig, __iomem *onbsigp;
3665 * First up we reset the board, to get it into a known state. There
3666 * is only 2 board types here we need to worry about. Don;t use the
3667 * standard board init routine here, it programs up the shared
3668 * memory address, and we don't know it yet...
3670 if (brdp->brdtype == BRD_ECPE) {
3671 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
3672 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
3674 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3676 stli_ecpeienable(brdp);
3677 } else if (brdp->brdtype == BRD_ONBOARDE) {
3678 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
3679 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3681 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3683 outb(0x1, brdp->iobase);
3685 stli_onbeenable(brdp);
3691 brdp->memsize = ECP_MEMSIZE;
3694 * Board shared memory is enabled, so now we have a poke around and
3695 * see if we can find it.
3697 for (i = 0; (i < stli_eisamempsize); i++) {
3698 brdp->memaddr = stli_eisamemprobeaddrs[i];
3699 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
3700 if (brdp->membase == NULL)
3703 if (brdp->brdtype == BRD_ECPE) {
3704 ecpsigp = stli_ecpeigetmemptr(brdp,
3705 CDK_SIGADDR, __LINE__);
3706 memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t));
3707 if (ecpsig.magic == cpu_to_le32(ECP_MAGIC))
3710 onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp,
3711 CDK_SIGADDR, __LINE__);
3712 memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t));
3713 if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) &&
3714 (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) &&
3715 (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) &&
3716 (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3)))
3720 iounmap(brdp->membase);
3726 * Regardless of whether we found the shared memory or not we must
3727 * disable the region. After that return success or failure.
3729 if (brdp->brdtype == BRD_ECPE)
3730 stli_ecpeidisable(brdp);
3732 stli_onbedisable(brdp);
3736 brdp->membase = NULL;
3737 printk(KERN_ERR "STALLION: failed to probe shared memory "
3738 "region for %s in EISA slot=%d\n",
3739 stli_brdnames[brdp->brdtype], (brdp->iobase >> 12));
3746 static int stli_getbrdnr(void)
3750 for (i = 0; i < STL_MAXBRDS; i++) {
3751 if (!stli_brds[i]) {
3752 if (i >= stli_nrbrds)
3753 stli_nrbrds = i + 1;
3760 #if STLI_EISAPROBE != 0
3761 /*****************************************************************************/
3764 * Probe around and try to find any EISA boards in system. The biggest
3765 * problem here is finding out what memory address is associated with
3766 * an EISA board after it is found. The registers of the ECPE and
3767 * ONboardE are not readable - so we can't read them from there. We
3768 * don't have access to the EISA CMOS (or EISA BIOS) so we don't
3769 * actually have any way to find out the real value. The best we can
3770 * do is go probing around in the usual places hoping we can find it.
3773 static int stli_findeisabrds(void)
3775 struct stlibrd *brdp;
3776 unsigned int iobase, eid, i;
3777 int brdnr, found = 0;
3780 * Firstly check if this is an EISA system. If this is not an EISA system then
3781 * don't bother going any further!
3787 * Looks like an EISA system, so go searching for EISA boards.
3789 for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) {
3790 outb(0xff, (iobase + 0xc80));
3791 eid = inb(iobase + 0xc80);
3792 eid |= inb(iobase + 0xc81) << 8;
3793 if (eid != STL_EISAID)
3797 * We have found a board. Need to check if this board was
3798 * statically configured already (just in case!).
3800 for (i = 0; (i < STL_MAXBRDS); i++) {
3801 brdp = stli_brds[i];
3804 if (brdp->iobase == iobase)
3807 if (i < STL_MAXBRDS)
3811 * We have found a Stallion board and it is not configured already.
3812 * Allocate a board structure and initialize it.
3814 if ((brdp = stli_allocbrd()) == NULL)
3815 return found ? : -ENOMEM;
3816 brdnr = stli_getbrdnr();
3818 return found ? : -ENOMEM;
3819 brdp->brdnr = (unsigned int)brdnr;
3820 eid = inb(iobase + 0xc82);
3821 if (eid == ECP_EISAID)
3822 brdp->brdtype = BRD_ECPE;
3823 else if (eid == ONB_EISAID)
3824 brdp->brdtype = BRD_ONBOARDE;
3826 brdp->brdtype = BRD_UNKNOWN;
3827 brdp->iobase = iobase;
3828 outb(0x1, (iobase + 0xc84));
3829 if (stli_eisamemprobe(brdp))
3830 outb(0, (iobase + 0xc84));
3831 if (stli_brdinit(brdp) < 0) {
3836 stli_brds[brdp->brdnr] = brdp;
3839 for (i = 0; i < brdp->nrports; i++)
3840 tty_register_device(stli_serial,
3841 brdp->brdnr * STL_MAXPORTS + i, NULL);
3847 static inline int stli_findeisabrds(void) { return 0; }
3850 /*****************************************************************************/
3853 * Find the next available board number that is free.
3856 /*****************************************************************************/
3859 * We have a Stallion board. Allocate a board structure and
3860 * initialize it. Read its IO and MEMORY resources from PCI
3861 * configuration space.
3864 static int __devinit stli_pciprobe(struct pci_dev *pdev,
3865 const struct pci_device_id *ent)
3867 struct stlibrd *brdp;
3869 int brdnr, retval = -EIO;
3871 retval = pci_enable_device(pdev);
3874 brdp = stli_allocbrd();
3879 mutex_lock(&stli_brdslock);
3880 brdnr = stli_getbrdnr();
3882 printk(KERN_INFO "STALLION: too many boards found, "
3883 "maximum supported %d\n", STL_MAXBRDS);
3884 mutex_unlock(&stli_brdslock);
3888 brdp->brdnr = (unsigned int)brdnr;
3889 stli_brds[brdp->brdnr] = brdp;
3890 mutex_unlock(&stli_brdslock);
3891 brdp->brdtype = BRD_ECPPCI;
3893 * We have all resources from the board, so lets setup the actual
3894 * board structure now.
3896 brdp->iobase = pci_resource_start(pdev, 3);
3897 brdp->memaddr = pci_resource_start(pdev, 2);
3898 retval = stli_brdinit(brdp);
3902 brdp->state |= BST_PROBED;
3903 pci_set_drvdata(pdev, brdp);
3906 brdp->enable = NULL;
3907 brdp->disable = NULL;
3909 for (i = 0; i < brdp->nrports; i++)
3910 tty_register_device(stli_serial, brdp->brdnr * STL_MAXPORTS + i,
3915 stli_brds[brdp->brdnr] = NULL;
3922 static void stli_pciremove(struct pci_dev *pdev)
3924 struct stlibrd *brdp = pci_get_drvdata(pdev);
3926 stli_cleanup_ports(brdp);
3928 iounmap(brdp->membase);
3929 if (brdp->iosize > 0)
3930 release_region(brdp->iobase, brdp->iosize);
3932 stli_brds[brdp->brdnr] = NULL;
3936 static struct pci_driver stli_pcidriver = {
3937 .name = "istallion",
3938 .id_table = istallion_pci_tbl,
3939 .probe = stli_pciprobe,
3940 .remove = __devexit_p(stli_pciremove)
3942 /*****************************************************************************/
3945 * Allocate a new board structure. Fill out the basic info in it.
3948 static struct stlibrd *stli_allocbrd(void)
3950 struct stlibrd *brdp;
3952 brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL);
3954 printk(KERN_ERR "STALLION: failed to allocate memory "
3955 "(size=%Zd)\n", sizeof(struct stlibrd));
3958 brdp->magic = STLI_BOARDMAGIC;
3962 /*****************************************************************************/
3965 * Scan through all the boards in the configuration and see what we
3969 static int stli_initbrds(void)
3971 struct stlibrd *brdp, *nxtbrdp;
3972 struct stlconf conf;
3973 unsigned int i, j, found = 0;
3976 for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp);
3978 memset(&conf, 0, sizeof(conf));
3979 if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0)
3981 if ((brdp = stli_allocbrd()) == NULL)
3983 brdp->brdnr = stli_nrbrds;
3984 brdp->brdtype = conf.brdtype;
3985 brdp->iobase = conf.ioaddr1;
3986 brdp->memaddr = conf.memaddr;
3987 if (stli_brdinit(brdp) < 0) {
3991 stli_brds[brdp->brdnr] = brdp;
3994 for (i = 0; i < brdp->nrports; i++)
3995 tty_register_device(stli_serial,
3996 brdp->brdnr * STL_MAXPORTS + i, NULL);
3999 retval = stli_findeisabrds();
4004 * All found boards are initialized. Now for a little optimization, if
4005 * no boards are sharing the "shared memory" regions then we can just
4006 * leave them all enabled. This is in fact the usual case.
4009 if (stli_nrbrds > 1) {
4010 for (i = 0; (i < stli_nrbrds); i++) {
4011 brdp = stli_brds[i];
4014 for (j = i + 1; (j < stli_nrbrds); j++) {
4015 nxtbrdp = stli_brds[j];
4016 if (nxtbrdp == NULL)
4018 if ((brdp->membase >= nxtbrdp->membase) &&
4019 (brdp->membase <= (nxtbrdp->membase +
4020 nxtbrdp->memsize - 1))) {
4028 if (stli_shared == 0) {
4029 for (i = 0; (i < stli_nrbrds); i++) {
4030 brdp = stli_brds[i];
4033 if (brdp->state & BST_FOUND) {
4035 brdp->enable = NULL;
4036 brdp->disable = NULL;
4041 retval = pci_register_driver(&stli_pcidriver);
4042 if (retval && found == 0) {
4043 printk(KERN_ERR "Neither isa nor eisa cards found nor pci "
4044 "driver can be registered!\n");
4053 /*****************************************************************************/
4056 * Code to handle an "staliomem" read operation. This device is the
4057 * contents of the board shared memory. It is used for down loading
4058 * the slave image (and debugging :-)
4061 static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp)
4063 unsigned long flags;
4064 void __iomem *memptr;
4065 struct stlibrd *brdp;
4071 brdnr = iminor(fp->f_path.dentry->d_inode);
4072 if (brdnr >= stli_nrbrds)
4074 brdp = stli_brds[brdnr];
4077 if (brdp->state == 0)
4079 if (off >= brdp->memsize || off + count < off)
4082 size = min(count, (size_t)(brdp->memsize - off));
4085 * Copy the data a page at a time
4088 p = (void *)__get_free_page(GFP_KERNEL);
4093 spin_lock_irqsave(&brd_lock, flags);
4095 memptr = EBRDGETMEMPTR(brdp, off);
4096 n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
4097 n = min(n, (int)PAGE_SIZE);
4098 memcpy_fromio(p, memptr, n);
4100 spin_unlock_irqrestore(&brd_lock, flags);
4101 if (copy_to_user(buf, p, n)) {
4111 free_page((unsigned long)p);
4115 /*****************************************************************************/
4118 * Code to handle an "staliomem" write operation. This device is the
4119 * contents of the board shared memory. It is used for down loading
4120 * the slave image (and debugging :-)
4122 * FIXME: copy under lock
4125 static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp)
4127 unsigned long flags;
4128 void __iomem *memptr;
4129 struct stlibrd *brdp;
4136 brdnr = iminor(fp->f_path.dentry->d_inode);
4138 if (brdnr >= stli_nrbrds)
4140 brdp = stli_brds[brdnr];
4143 if (brdp->state == 0)
4145 if (off >= brdp->memsize || off + count < off)
4148 chbuf = (char __user *) buf;
4149 size = min(count, (size_t)(brdp->memsize - off));
4152 * Copy the data a page at a time
4155 p = (void *)__get_free_page(GFP_KERNEL);
4160 n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
4161 n = min(n, (int)PAGE_SIZE);
4162 if (copy_from_user(p, chbuf, n)) {
4167 spin_lock_irqsave(&brd_lock, flags);
4169 memptr = EBRDGETMEMPTR(brdp, off);
4170 memcpy_toio(memptr, p, n);
4172 spin_unlock_irqrestore(&brd_lock, flags);
4178 free_page((unsigned long) p);
4183 /*****************************************************************************/
4186 * Return the board stats structure to user app.
4189 static int stli_getbrdstats(combrd_t __user *bp)
4191 struct stlibrd *brdp;
4194 if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t)))
4196 if (stli_brdstats.brd >= STL_MAXBRDS)
4198 brdp = stli_brds[stli_brdstats.brd];
4202 memset(&stli_brdstats, 0, sizeof(combrd_t));
4203 stli_brdstats.brd = brdp->brdnr;
4204 stli_brdstats.type = brdp->brdtype;
4205 stli_brdstats.hwid = 0;
4206 stli_brdstats.state = brdp->state;
4207 stli_brdstats.ioaddr = brdp->iobase;
4208 stli_brdstats.memaddr = brdp->memaddr;
4209 stli_brdstats.nrpanels = brdp->nrpanels;
4210 stli_brdstats.nrports = brdp->nrports;
4211 for (i = 0; (i < brdp->nrpanels); i++) {
4212 stli_brdstats.panels[i].panel = i;
4213 stli_brdstats.panels[i].hwid = brdp->panelids[i];
4214 stli_brdstats.panels[i].nrports = brdp->panels[i];
4217 if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t)))
4222 /*****************************************************************************/
4225 * Resolve the referenced port number into a port struct pointer.
4228 static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr,
4229 unsigned int portnr)
4231 struct stlibrd *brdp;
4234 if (brdnr >= STL_MAXBRDS)
4236 brdp = stli_brds[brdnr];
4239 for (i = 0; (i < panelnr); i++)
4240 portnr += brdp->panels[i];
4241 if (portnr >= brdp->nrports)
4243 return brdp->ports[portnr];
4246 /*****************************************************************************/
4249 * Return the port stats structure to user app. A NULL port struct
4250 * pointer passed in means that we need to find out from the app
4251 * what port to get stats for (used through board control device).
4254 static int stli_portcmdstats(struct stliport *portp)
4256 unsigned long flags;
4257 struct stlibrd *brdp;
4260 memset(&stli_comstats, 0, sizeof(comstats_t));
4264 brdp = stli_brds[portp->brdnr];
4268 if (brdp->state & BST_STARTED) {
4269 if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS,
4270 &stli_cdkstats, sizeof(asystats_t), 1)) < 0)
4273 memset(&stli_cdkstats, 0, sizeof(asystats_t));
4276 stli_comstats.brd = portp->brdnr;
4277 stli_comstats.panel = portp->panelnr;
4278 stli_comstats.port = portp->portnr;
4279 stli_comstats.state = portp->state;
4280 stli_comstats.flags = portp->flags;
4282 spin_lock_irqsave(&brd_lock, flags);
4283 if (portp->tty != NULL) {
4284 if (portp->tty->driver_data == portp) {
4285 stli_comstats.ttystate = portp->tty->flags;
4286 stli_comstats.rxbuffered = -1;
4287 if (portp->tty->termios != NULL) {
4288 stli_comstats.cflags = portp->tty->termios->c_cflag;
4289 stli_comstats.iflags = portp->tty->termios->c_iflag;
4290 stli_comstats.oflags = portp->tty->termios->c_oflag;
4291 stli_comstats.lflags = portp->tty->termios->c_lflag;
4295 spin_unlock_irqrestore(&brd_lock, flags);
4297 stli_comstats.txtotal = stli_cdkstats.txchars;
4298 stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover;
4299 stli_comstats.txbuffered = stli_cdkstats.txringq;
4300 stli_comstats.rxbuffered += stli_cdkstats.rxringq;
4301 stli_comstats.rxoverrun = stli_cdkstats.overruns;
4302 stli_comstats.rxparity = stli_cdkstats.parity;
4303 stli_comstats.rxframing = stli_cdkstats.framing;
4304 stli_comstats.rxlost = stli_cdkstats.ringover;
4305 stli_comstats.rxbreaks = stli_cdkstats.rxbreaks;
4306 stli_comstats.txbreaks = stli_cdkstats.txbreaks;
4307 stli_comstats.txxon = stli_cdkstats.txstart;
4308 stli_comstats.txxoff = stli_cdkstats.txstop;
4309 stli_comstats.rxxon = stli_cdkstats.rxstart;
4310 stli_comstats.rxxoff = stli_cdkstats.rxstop;
4311 stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2;
4312 stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff;
4313 stli_comstats.modem = stli_cdkstats.dcdcnt;
4314 stli_comstats.hwid = stli_cdkstats.hwid;
4315 stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals);
4320 /*****************************************************************************/
4323 * Return the port stats structure to user app. A NULL port struct
4324 * pointer passed in means that we need to find out from the app
4325 * what port to get stats for (used through board control device).
4328 static int stli_getportstats(struct stliport *portp, comstats_t __user *cp)
4330 struct stlibrd *brdp;
4334 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4336 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4337 stli_comstats.port);
4342 brdp = stli_brds[portp->brdnr];
4346 if ((rc = stli_portcmdstats(portp)) < 0)
4349 return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ?
4353 /*****************************************************************************/
4356 * Clear the port stats structure. We also return it zeroed out...
4359 static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp)
4361 struct stlibrd *brdp;
4365 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4367 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4368 stli_comstats.port);
4373 brdp = stli_brds[portp->brdnr];
4377 if (brdp->state & BST_STARTED) {
4378 if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0)
4382 memset(&stli_comstats, 0, sizeof(comstats_t));
4383 stli_comstats.brd = portp->brdnr;
4384 stli_comstats.panel = portp->panelnr;
4385 stli_comstats.port = portp->portnr;
4387 if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t)))
4392 /*****************************************************************************/
4395 * Return the entire driver ports structure to a user app.
4398 static int stli_getportstruct(struct stliport __user *arg)
4400 struct stliport stli_dummyport;
4401 struct stliport *portp;
4403 if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport)))
4405 portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr,
4406 stli_dummyport.portnr);
4409 if (copy_to_user(arg, portp, sizeof(struct stliport)))
4414 /*****************************************************************************/
4417 * Return the entire driver board structure to a user app.
4420 static int stli_getbrdstruct(struct stlibrd __user *arg)
4422 struct stlibrd stli_dummybrd;
4423 struct stlibrd *brdp;
4425 if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd)))
4427 if (stli_dummybrd.brdnr >= STL_MAXBRDS)
4429 brdp = stli_brds[stli_dummybrd.brdnr];
4432 if (copy_to_user(arg, brdp, sizeof(struct stlibrd)))
4437 /*****************************************************************************/
4440 * The "staliomem" device is also required to do some special operations on
4441 * the board. We need to be able to send an interrupt to the board,
4442 * reset it, and start/stop it.
4445 static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg)
4447 struct stlibrd *brdp;
4448 int brdnr, rc, done;
4449 void __user *argp = (void __user *)arg;
4452 * First up handle the board independent ioctls.
4458 case COM_GETPORTSTATS:
4459 rc = stli_getportstats(NULL, argp);
4462 case COM_CLRPORTSTATS:
4463 rc = stli_clrportstats(NULL, argp);
4466 case COM_GETBRDSTATS:
4467 rc = stli_getbrdstats(argp);
4471 rc = stli_getportstruct(argp);
4475 rc = stli_getbrdstruct(argp);
4484 * Now handle the board specific ioctls. These all depend on the
4485 * minor number of the device they were called from.
4488 if (brdnr >= STL_MAXBRDS)
4490 brdp = stli_brds[brdnr];
4493 if (brdp->state == 0)
4501 rc = stli_startbrd(brdp);
4504 brdp->state &= ~BST_STARTED;
4507 brdp->state &= ~BST_STARTED;
4509 if (stli_shared == 0) {
4510 if (brdp->reenable != NULL)
4511 (* brdp->reenable)(brdp);
4521 static const struct tty_operations stli_ops = {
4523 .close = stli_close,
4524 .write = stli_write,
4525 .put_char = stli_putchar,
4526 .flush_chars = stli_flushchars,
4527 .write_room = stli_writeroom,
4528 .chars_in_buffer = stli_charsinbuffer,
4529 .ioctl = stli_ioctl,
4530 .set_termios = stli_settermios,
4531 .throttle = stli_throttle,
4532 .unthrottle = stli_unthrottle,
4534 .start = stli_start,
4535 .hangup = stli_hangup,
4536 .flush_buffer = stli_flushbuffer,
4537 .break_ctl = stli_breakctl,
4538 .wait_until_sent = stli_waituntilsent,
4539 .send_xchar = stli_sendxchar,
4540 .read_proc = stli_readproc,
4541 .tiocmget = stli_tiocmget,
4542 .tiocmset = stli_tiocmset,
4545 /*****************************************************************************/
4547 * Loadable module initialization stuff.
4550 static void istallion_cleanup_isa(void)
4552 struct stlibrd *brdp;
4555 for (j = 0; (j < stli_nrbrds); j++) {
4556 if ((brdp = stli_brds[j]) == NULL || (brdp->state & BST_PROBED))
4559 stli_cleanup_ports(brdp);
4561 iounmap(brdp->membase);
4562 if (brdp->iosize > 0)
4563 release_region(brdp->iobase, brdp->iosize);
4565 stli_brds[j] = NULL;
4569 static int __init istallion_module_init(void)
4574 printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion);
4576 spin_lock_init(&stli_lock);
4577 spin_lock_init(&brd_lock);
4579 stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL);
4580 if (!stli_txcookbuf) {
4581 printk(KERN_ERR "STALLION: failed to allocate memory "
4582 "(size=%d)\n", STLI_TXBUFSIZE);
4587 stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS);
4593 stli_serial->owner = THIS_MODULE;
4594 stli_serial->driver_name = stli_drvname;
4595 stli_serial->name = stli_serialname;
4596 stli_serial->major = STL_SERIALMAJOR;
4597 stli_serial->minor_start = 0;
4598 stli_serial->type = TTY_DRIVER_TYPE_SERIAL;
4599 stli_serial->subtype = SERIAL_TYPE_NORMAL;
4600 stli_serial->init_termios = stli_deftermios;
4601 stli_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
4602 tty_set_operations(stli_serial, &stli_ops);
4604 retval = tty_register_driver(stli_serial);
4606 printk(KERN_ERR "STALLION: failed to register serial driver\n");
4610 retval = stli_initbrds();
4615 * Set up a character driver for the shared memory region. We need this
4616 * to down load the slave code image. Also it is a useful debugging tool.
4618 retval = register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem);
4620 printk(KERN_ERR "STALLION: failed to register serial memory "
4625 istallion_class = class_create(THIS_MODULE, "staliomem");
4626 for (i = 0; i < 4; i++)
4627 class_device_create(istallion_class, NULL,
4628 MKDEV(STL_SIOMEMMAJOR, i),
4629 NULL, "staliomem%d", i);
4633 pci_unregister_driver(&stli_pcidriver);
4634 istallion_cleanup_isa();
4636 tty_unregister_driver(stli_serial);
4638 put_tty_driver(stli_serial);
4640 kfree(stli_txcookbuf);
4645 /*****************************************************************************/
4647 static void __exit istallion_module_exit(void)
4651 printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle,
4656 del_timer_sync(&stli_timerlist);
4659 unregister_chrdev(STL_SIOMEMMAJOR, "staliomem");
4661 for (j = 0; j < 4; j++)
4662 class_device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR,
4664 class_destroy(istallion_class);
4666 pci_unregister_driver(&stli_pcidriver);
4667 istallion_cleanup_isa();
4669 tty_unregister_driver(stli_serial);
4670 put_tty_driver(stli_serial);
4672 kfree(stli_txcookbuf);
4675 module_init(istallion_module_init);
4676 module_exit(istallion_module_exit);