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 int stli_setport(struct stliport *portp);
631 static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
632 static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
633 static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
634 static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp);
635 static void stli_mkasyport(struct stliport *portp, asyport_t *pp, struct ktermios *tiosp);
636 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts);
637 static long stli_mktiocm(unsigned long sigvalue);
638 static void stli_read(struct stlibrd *brdp, struct stliport *portp);
639 static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp);
640 static int stli_setserial(struct stliport *portp, struct serial_struct __user *sp);
641 static int stli_getbrdstats(combrd_t __user *bp);
642 static int stli_getportstats(struct stliport *portp, comstats_t __user *cp);
643 static int stli_portcmdstats(struct stliport *portp);
644 static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp);
645 static int stli_getportstruct(struct stliport __user *arg);
646 static int stli_getbrdstruct(struct stlibrd __user *arg);
647 static struct stlibrd *stli_allocbrd(void);
649 static void stli_ecpinit(struct stlibrd *brdp);
650 static void stli_ecpenable(struct stlibrd *brdp);
651 static void stli_ecpdisable(struct stlibrd *brdp);
652 static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
653 static void stli_ecpreset(struct stlibrd *brdp);
654 static void stli_ecpintr(struct stlibrd *brdp);
655 static void stli_ecpeiinit(struct stlibrd *brdp);
656 static void stli_ecpeienable(struct stlibrd *brdp);
657 static void stli_ecpeidisable(struct stlibrd *brdp);
658 static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
659 static void stli_ecpeireset(struct stlibrd *brdp);
660 static void stli_ecpmcenable(struct stlibrd *brdp);
661 static void stli_ecpmcdisable(struct stlibrd *brdp);
662 static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
663 static void stli_ecpmcreset(struct stlibrd *brdp);
664 static void stli_ecppciinit(struct stlibrd *brdp);
665 static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
666 static void stli_ecppcireset(struct stlibrd *brdp);
668 static void stli_onbinit(struct stlibrd *brdp);
669 static void stli_onbenable(struct stlibrd *brdp);
670 static void stli_onbdisable(struct stlibrd *brdp);
671 static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
672 static void stli_onbreset(struct stlibrd *brdp);
673 static void stli_onbeinit(struct stlibrd *brdp);
674 static void stli_onbeenable(struct stlibrd *brdp);
675 static void stli_onbedisable(struct stlibrd *brdp);
676 static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
677 static void stli_onbereset(struct stlibrd *brdp);
678 static void stli_bbyinit(struct stlibrd *brdp);
679 static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
680 static void stli_bbyreset(struct stlibrd *brdp);
681 static void stli_stalinit(struct stlibrd *brdp);
682 static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
683 static void stli_stalreset(struct stlibrd *brdp);
685 static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr);
687 static int stli_initecp(struct stlibrd *brdp);
688 static int stli_initonb(struct stlibrd *brdp);
689 #if STLI_EISAPROBE != 0
690 static int stli_eisamemprobe(struct stlibrd *brdp);
692 static int stli_initports(struct stlibrd *brdp);
694 /*****************************************************************************/
697 * Define the driver info for a user level shared memory device. This
698 * device will work sort of like the /dev/kmem device - except that it
699 * will give access to the shared memory on the Stallion intelligent
700 * board. This is also a very useful debugging tool.
702 static const struct file_operations stli_fsiomem = {
703 .owner = THIS_MODULE,
704 .read = stli_memread,
705 .write = stli_memwrite,
706 .ioctl = stli_memioctl,
709 /*****************************************************************************/
712 * Define a timer_list entry for our poll routine. The slave board
713 * is polled every so often to see if anything needs doing. This is
714 * much cheaper on host cpu than using interrupts. It turns out to
715 * not increase character latency by much either...
717 static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0);
719 static int stli_timeron;
722 * Define the calculation for the timeout routine.
724 #define STLI_TIMEOUT (jiffies + 1)
726 /*****************************************************************************/
728 static struct class *istallion_class;
730 static void stli_cleanup_ports(struct stlibrd *brdp)
732 struct stliport *portp;
735 for (j = 0; j < STL_MAXPORTS; j++) {
736 portp = brdp->ports[j];
738 if (portp->tty != NULL)
739 tty_hangup(portp->tty);
745 /*****************************************************************************/
748 * Parse the supplied argument string, into the board conf struct.
751 static int stli_parsebrd(struct stlconf *confp, char **argp)
756 if (argp[0] == NULL || *argp[0] == 0)
759 for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++)
762 for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) {
763 if (strcmp(stli_brdstr[i].name, argp[0]) == 0)
766 if (i == ARRAY_SIZE(stli_brdstr)) {
767 printk("STALLION: unknown board name, %s?\n", argp[0]);
771 confp->brdtype = stli_brdstr[i].type;
772 if (argp[1] != NULL && *argp[1] != 0)
773 confp->ioaddr1 = simple_strtoul(argp[1], NULL, 0);
774 if (argp[2] != NULL && *argp[2] != 0)
775 confp->memaddr = simple_strtoul(argp[2], NULL, 0);
779 /*****************************************************************************/
781 static int stli_open(struct tty_struct *tty, struct file *filp)
783 struct stlibrd *brdp;
784 struct stliport *portp;
785 unsigned int minordev, brdnr, portnr;
788 minordev = tty->index;
789 brdnr = MINOR2BRD(minordev);
790 if (brdnr >= stli_nrbrds)
792 brdp = stli_brds[brdnr];
795 if ((brdp->state & BST_STARTED) == 0)
797 portnr = MINOR2PORT(minordev);
798 if (portnr > brdp->nrports)
801 portp = brdp->ports[portnr];
804 if (portp->devnr < 1)
809 * Check if this port is in the middle of closing. If so then wait
810 * until it is closed then return error status based on flag settings.
811 * The sleep here does not need interrupt protection since the wakeup
812 * for it is done with the same context.
814 if (portp->flags & ASYNC_CLOSING) {
815 interruptible_sleep_on(&portp->close_wait);
816 if (portp->flags & ASYNC_HUP_NOTIFY)
822 * On the first open of the device setup the port hardware, and
823 * initialize the per port data structure. Since initializing the port
824 * requires several commands to the board we will need to wait for any
825 * other open that is already initializing the port.
828 tty->driver_data = portp;
831 wait_event_interruptible(portp->raw_wait,
832 !test_bit(ST_INITIALIZING, &portp->state));
833 if (signal_pending(current))
836 if ((portp->flags & ASYNC_INITIALIZED) == 0) {
837 set_bit(ST_INITIALIZING, &portp->state);
838 if ((rc = stli_initopen(brdp, portp)) >= 0) {
839 portp->flags |= ASYNC_INITIALIZED;
840 clear_bit(TTY_IO_ERROR, &tty->flags);
842 clear_bit(ST_INITIALIZING, &portp->state);
843 wake_up_interruptible(&portp->raw_wait);
849 * Check if this port is in the middle of closing. If so then wait
850 * until it is closed then return error status, based on flag settings.
851 * The sleep here does not need interrupt protection since the wakeup
852 * for it is done with the same context.
854 if (portp->flags & ASYNC_CLOSING) {
855 interruptible_sleep_on(&portp->close_wait);
856 if (portp->flags & ASYNC_HUP_NOTIFY)
862 * Based on type of open being done check if it can overlap with any
863 * previous opens still in effect. If we are a normal serial device
864 * then also we might have to wait for carrier.
866 if (!(filp->f_flags & O_NONBLOCK)) {
867 if ((rc = stli_waitcarrier(brdp, portp, filp)) != 0)
870 portp->flags |= ASYNC_NORMAL_ACTIVE;
874 /*****************************************************************************/
876 static void stli_close(struct tty_struct *tty, struct file *filp)
878 struct stlibrd *brdp;
879 struct stliport *portp;
882 portp = tty->driver_data;
886 spin_lock_irqsave(&stli_lock, flags);
887 if (tty_hung_up_p(filp)) {
888 spin_unlock_irqrestore(&stli_lock, flags);
891 if ((tty->count == 1) && (portp->refcount != 1))
893 if (portp->refcount-- > 1) {
894 spin_unlock_irqrestore(&stli_lock, flags);
898 portp->flags |= ASYNC_CLOSING;
901 * May want to wait for data to drain before closing. The BUSY flag
902 * keeps track of whether we are still transmitting or not. It is
903 * updated by messages from the slave - indicating when all chars
904 * really have drained.
906 if (tty == stli_txcooktty)
907 stli_flushchars(tty);
909 spin_unlock_irqrestore(&stli_lock, flags);
911 if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE)
912 tty_wait_until_sent(tty, portp->closing_wait);
914 portp->flags &= ~ASYNC_INITIALIZED;
915 brdp = stli_brds[portp->brdnr];
916 stli_rawclose(brdp, portp, 0, 0);
917 if (tty->termios->c_cflag & HUPCL) {
918 stli_mkasysigs(&portp->asig, 0, 0);
919 if (test_bit(ST_CMDING, &portp->state))
920 set_bit(ST_DOSIGS, &portp->state);
922 stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig,
923 sizeof(asysigs_t), 0);
925 clear_bit(ST_TXBUSY, &portp->state);
926 clear_bit(ST_RXSTOP, &portp->state);
927 set_bit(TTY_IO_ERROR, &tty->flags);
928 if (tty->ldisc.flush_buffer)
929 (tty->ldisc.flush_buffer)(tty);
930 set_bit(ST_DOFLUSHRX, &portp->state);
931 stli_flushbuffer(tty);
936 if (portp->openwaitcnt) {
937 if (portp->close_delay)
938 msleep_interruptible(jiffies_to_msecs(portp->close_delay));
939 wake_up_interruptible(&portp->open_wait);
942 portp->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
943 wake_up_interruptible(&portp->close_wait);
946 /*****************************************************************************/
949 * Carry out first open operations on a port. This involves a number of
950 * commands to be sent to the slave. We need to open the port, set the
951 * notification events, set the initial port settings, get and set the
952 * initial signal values. We sleep and wait in between each one. But
953 * this still all happens pretty quickly.
956 static int stli_initopen(struct stlibrd *brdp, struct stliport *portp)
958 struct tty_struct *tty;
963 if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0)
966 memset(&nt, 0, sizeof(asynotify_t));
967 nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK);
969 if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt,
970 sizeof(asynotify_t), 0)) < 0)
976 stli_mkasyport(portp, &aport, tty->termios);
977 if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport,
978 sizeof(asyport_t), 0)) < 0)
981 set_bit(ST_GETSIGS, &portp->state);
982 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig,
983 sizeof(asysigs_t), 1)) < 0)
985 if (test_and_clear_bit(ST_GETSIGS, &portp->state))
986 portp->sigs = stli_mktiocm(portp->asig.sigvalue);
987 stli_mkasysigs(&portp->asig, 1, 1);
988 if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
989 sizeof(asysigs_t), 0)) < 0)
995 /*****************************************************************************/
998 * Send an open message to the slave. This will sleep waiting for the
999 * acknowledgement, so must have user context. We need to co-ordinate
1000 * with close events here, since we don't want open and close events
1004 static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
1006 cdkhdr_t __iomem *hdrp;
1007 cdkctrl_t __iomem *cp;
1008 unsigned char __iomem *bits;
1009 unsigned long flags;
1013 * Send a message to the slave to open this port.
1017 * Slave is already closing this port. This can happen if a hangup
1018 * occurs on this port. So we must wait until it is complete. The
1019 * order of opens and closes may not be preserved across shared
1020 * memory, so we must wait until it is complete.
1022 wait_event_interruptible(portp->raw_wait,
1023 !test_bit(ST_CLOSING, &portp->state));
1024 if (signal_pending(current)) {
1025 return -ERESTARTSYS;
1029 * Everything is ready now, so write the open message into shared
1030 * memory. Once the message is in set the service bits to say that
1031 * this port wants service.
1033 spin_lock_irqsave(&brd_lock, flags);
1035 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1036 writel(arg, &cp->openarg);
1037 writeb(1, &cp->open);
1038 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1039 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1041 writeb(readb(bits) | portp->portbit, bits);
1045 spin_unlock_irqrestore(&brd_lock, flags);
1050 * Slave is in action, so now we must wait for the open acknowledgment
1054 set_bit(ST_OPENING, &portp->state);
1055 spin_unlock_irqrestore(&brd_lock, flags);
1057 wait_event_interruptible(portp->raw_wait,
1058 !test_bit(ST_OPENING, &portp->state));
1059 if (signal_pending(current))
1062 if ((rc == 0) && (portp->rc != 0))
1067 /*****************************************************************************/
1070 * Send a close message to the slave. Normally this will sleep waiting
1071 * for the acknowledgement, but if wait parameter is 0 it will not. If
1072 * wait is true then must have user context (to sleep).
1075 static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
1077 cdkhdr_t __iomem *hdrp;
1078 cdkctrl_t __iomem *cp;
1079 unsigned char __iomem *bits;
1080 unsigned long flags;
1084 * Slave is already closing this port. This can happen if a hangup
1085 * occurs on this port.
1088 wait_event_interruptible(portp->raw_wait,
1089 !test_bit(ST_CLOSING, &portp->state));
1090 if (signal_pending(current)) {
1091 return -ERESTARTSYS;
1096 * Write the close command into shared memory.
1098 spin_lock_irqsave(&brd_lock, flags);
1100 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1101 writel(arg, &cp->closearg);
1102 writeb(1, &cp->close);
1103 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1104 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1106 writeb(readb(bits) |portp->portbit, bits);
1109 set_bit(ST_CLOSING, &portp->state);
1110 spin_unlock_irqrestore(&brd_lock, flags);
1116 * Slave is in action, so now we must wait for the open acknowledgment
1120 wait_event_interruptible(portp->raw_wait,
1121 !test_bit(ST_CLOSING, &portp->state));
1122 if (signal_pending(current))
1125 if ((rc == 0) && (portp->rc != 0))
1130 /*****************************************************************************/
1133 * Send a command to the slave and wait for the response. This must
1134 * have user context (it sleeps). This routine is generic in that it
1135 * can send any type of command. Its purpose is to wait for that command
1136 * to complete (as opposed to initiating the command then returning).
1139 static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
1141 wait_event_interruptible(portp->raw_wait,
1142 !test_bit(ST_CMDING, &portp->state));
1143 if (signal_pending(current))
1144 return -ERESTARTSYS;
1146 stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
1148 wait_event_interruptible(portp->raw_wait,
1149 !test_bit(ST_CMDING, &portp->state));
1150 if (signal_pending(current))
1151 return -ERESTARTSYS;
1158 /*****************************************************************************/
1161 * Send the termios settings for this port to the slave. This sleeps
1162 * waiting for the command to complete - so must have user context.
1165 static int stli_setport(struct stliport *portp)
1167 struct stlibrd *brdp;
1172 if (portp->tty == NULL)
1174 if (portp->brdnr >= stli_nrbrds)
1176 brdp = stli_brds[portp->brdnr];
1180 stli_mkasyport(portp, &aport, portp->tty->termios);
1181 return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0));
1184 /*****************************************************************************/
1187 * Possibly need to wait for carrier (DCD signal) to come high. Say
1188 * maybe because if we are clocal then we don't need to wait...
1191 static int stli_waitcarrier(struct stlibrd *brdp, struct stliport *portp, struct file *filp)
1193 unsigned long flags;
1199 if (portp->tty->termios->c_cflag & CLOCAL)
1202 spin_lock_irqsave(&stli_lock, flags);
1203 portp->openwaitcnt++;
1204 if (! tty_hung_up_p(filp))
1206 spin_unlock_irqrestore(&stli_lock, flags);
1209 stli_mkasysigs(&portp->asig, 1, 1);
1210 if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS,
1211 &portp->asig, sizeof(asysigs_t), 0)) < 0)
1213 if (tty_hung_up_p(filp) ||
1214 ((portp->flags & ASYNC_INITIALIZED) == 0)) {
1215 if (portp->flags & ASYNC_HUP_NOTIFY)
1221 if (((portp->flags & ASYNC_CLOSING) == 0) &&
1222 (doclocal || (portp->sigs & TIOCM_CD))) {
1225 if (signal_pending(current)) {
1229 interruptible_sleep_on(&portp->open_wait);
1232 spin_lock_irqsave(&stli_lock, flags);
1233 if (! tty_hung_up_p(filp))
1235 portp->openwaitcnt--;
1236 spin_unlock_irqrestore(&stli_lock, flags);
1241 /*****************************************************************************/
1244 * Write routine. Take the data and put it in the shared memory ring
1245 * queue. If port is not already sending chars then need to mark the
1246 * service bits for this port.
1249 static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count)
1251 cdkasy_t __iomem *ap;
1252 cdkhdr_t __iomem *hdrp;
1253 unsigned char __iomem *bits;
1254 unsigned char __iomem *shbuf;
1255 unsigned char *chbuf;
1256 struct stliport *portp;
1257 struct stlibrd *brdp;
1258 unsigned int len, stlen, head, tail, size;
1259 unsigned long flags;
1261 if (tty == stli_txcooktty)
1262 stli_flushchars(tty);
1263 portp = tty->driver_data;
1266 if (portp->brdnr >= stli_nrbrds)
1268 brdp = stli_brds[portp->brdnr];
1271 chbuf = (unsigned char *) buf;
1274 * All data is now local, shove as much as possible into shared memory.
1276 spin_lock_irqsave(&brd_lock, flags);
1278 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1279 head = (unsigned int) readw(&ap->txq.head);
1280 tail = (unsigned int) readw(&ap->txq.tail);
1281 if (tail != ((unsigned int) readw(&ap->txq.tail)))
1282 tail = (unsigned int) readw(&ap->txq.tail);
1283 size = portp->txsize;
1285 len = size - (head - tail) - 1;
1286 stlen = size - head;
1288 len = tail - head - 1;
1292 len = min(len, (unsigned int)count);
1294 shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset);
1297 stlen = min(len, stlen);
1298 memcpy_toio(shbuf + head, chbuf, stlen);
1309 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1310 writew(head, &ap->txq.head);
1311 if (test_bit(ST_TXBUSY, &portp->state)) {
1312 if (readl(&ap->changed.data) & DT_TXEMPTY)
1313 writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
1315 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1316 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1318 writeb(readb(bits) | portp->portbit, bits);
1319 set_bit(ST_TXBUSY, &portp->state);
1321 spin_unlock_irqrestore(&brd_lock, flags);
1326 /*****************************************************************************/
1329 * Output a single character. We put it into a temporary local buffer
1330 * (for speed) then write out that buffer when the flushchars routine
1331 * is called. There is a safety catch here so that if some other port
1332 * writes chars before the current buffer has been, then we write them
1333 * first them do the new ports.
1336 static void stli_putchar(struct tty_struct *tty, unsigned char ch)
1338 if (tty != stli_txcooktty) {
1339 if (stli_txcooktty != NULL)
1340 stli_flushchars(stli_txcooktty);
1341 stli_txcooktty = tty;
1344 stli_txcookbuf[stli_txcooksize++] = ch;
1347 /*****************************************************************************/
1350 * Transfer characters from the local TX cooking buffer to the board.
1351 * We sort of ignore the tty that gets passed in here. We rely on the
1352 * info stored with the TX cook buffer to tell us which port to flush
1353 * the data on. In any case we clean out the TX cook buffer, for re-use
1357 static void stli_flushchars(struct tty_struct *tty)
1359 cdkhdr_t __iomem *hdrp;
1360 unsigned char __iomem *bits;
1361 cdkasy_t __iomem *ap;
1362 struct tty_struct *cooktty;
1363 struct stliport *portp;
1364 struct stlibrd *brdp;
1365 unsigned int len, stlen, head, tail, size, count, cooksize;
1367 unsigned char __iomem *shbuf;
1368 unsigned long flags;
1370 cooksize = stli_txcooksize;
1371 cooktty = stli_txcooktty;
1372 stli_txcooksize = 0;
1373 stli_txcookrealsize = 0;
1374 stli_txcooktty = NULL;
1378 if (cooktty == NULL)
1385 portp = tty->driver_data;
1388 if (portp->brdnr >= stli_nrbrds)
1390 brdp = stli_brds[portp->brdnr];
1394 spin_lock_irqsave(&brd_lock, flags);
1397 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1398 head = (unsigned int) readw(&ap->txq.head);
1399 tail = (unsigned int) readw(&ap->txq.tail);
1400 if (tail != ((unsigned int) readw(&ap->txq.tail)))
1401 tail = (unsigned int) readw(&ap->txq.tail);
1402 size = portp->txsize;
1404 len = size - (head - tail) - 1;
1405 stlen = size - head;
1407 len = tail - head - 1;
1411 len = min(len, cooksize);
1413 shbuf = EBRDGETMEMPTR(brdp, portp->txoffset);
1414 buf = stli_txcookbuf;
1417 stlen = min(len, stlen);
1418 memcpy_toio(shbuf + head, buf, stlen);
1429 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1430 writew(head, &ap->txq.head);
1432 if (test_bit(ST_TXBUSY, &portp->state)) {
1433 if (readl(&ap->changed.data) & DT_TXEMPTY)
1434 writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
1436 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1437 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1439 writeb(readb(bits) | portp->portbit, bits);
1440 set_bit(ST_TXBUSY, &portp->state);
1443 spin_unlock_irqrestore(&brd_lock, flags);
1446 /*****************************************************************************/
1448 static int stli_writeroom(struct tty_struct *tty)
1450 cdkasyrq_t __iomem *rp;
1451 struct stliport *portp;
1452 struct stlibrd *brdp;
1453 unsigned int head, tail, len;
1454 unsigned long flags;
1456 if (tty == stli_txcooktty) {
1457 if (stli_txcookrealsize != 0) {
1458 len = stli_txcookrealsize - stli_txcooksize;
1463 portp = tty->driver_data;
1466 if (portp->brdnr >= stli_nrbrds)
1468 brdp = stli_brds[portp->brdnr];
1472 spin_lock_irqsave(&brd_lock, flags);
1474 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1475 head = (unsigned int) readw(&rp->head);
1476 tail = (unsigned int) readw(&rp->tail);
1477 if (tail != ((unsigned int) readw(&rp->tail)))
1478 tail = (unsigned int) readw(&rp->tail);
1479 len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head);
1482 spin_unlock_irqrestore(&brd_lock, flags);
1484 if (tty == stli_txcooktty) {
1485 stli_txcookrealsize = len;
1486 len -= stli_txcooksize;
1491 /*****************************************************************************/
1494 * Return the number of characters in the transmit buffer. Normally we
1495 * will return the number of chars in the shared memory ring queue.
1496 * We need to kludge around the case where the shared memory buffer is
1497 * empty but not all characters have drained yet, for this case just
1498 * return that there is 1 character in the buffer!
1501 static int stli_charsinbuffer(struct tty_struct *tty)
1503 cdkasyrq_t __iomem *rp;
1504 struct stliport *portp;
1505 struct stlibrd *brdp;
1506 unsigned int head, tail, len;
1507 unsigned long flags;
1509 if (tty == stli_txcooktty)
1510 stli_flushchars(tty);
1511 portp = tty->driver_data;
1514 if (portp->brdnr >= stli_nrbrds)
1516 brdp = stli_brds[portp->brdnr];
1520 spin_lock_irqsave(&brd_lock, flags);
1522 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1523 head = (unsigned int) readw(&rp->head);
1524 tail = (unsigned int) readw(&rp->tail);
1525 if (tail != ((unsigned int) readw(&rp->tail)))
1526 tail = (unsigned int) readw(&rp->tail);
1527 len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head));
1528 if ((len == 0) && test_bit(ST_TXBUSY, &portp->state))
1531 spin_unlock_irqrestore(&brd_lock, flags);
1536 /*****************************************************************************/
1539 * Generate the serial struct info.
1542 static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp)
1544 struct serial_struct sio;
1545 struct stlibrd *brdp;
1547 memset(&sio, 0, sizeof(struct serial_struct));
1548 sio.type = PORT_UNKNOWN;
1549 sio.line = portp->portnr;
1551 sio.flags = portp->flags;
1552 sio.baud_base = portp->baud_base;
1553 sio.close_delay = portp->close_delay;
1554 sio.closing_wait = portp->closing_wait;
1555 sio.custom_divisor = portp->custom_divisor;
1556 sio.xmit_fifo_size = 0;
1559 brdp = stli_brds[portp->brdnr];
1561 sio.port = brdp->iobase;
1563 return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ?
1567 /*****************************************************************************/
1570 * Set port according to the serial struct info.
1571 * At this point we do not do any auto-configure stuff, so we will
1572 * just quietly ignore any requests to change irq, etc.
1575 static int stli_setserial(struct stliport *portp, struct serial_struct __user *sp)
1577 struct serial_struct sio;
1580 if (copy_from_user(&sio, sp, sizeof(struct serial_struct)))
1582 if (!capable(CAP_SYS_ADMIN)) {
1583 if ((sio.baud_base != portp->baud_base) ||
1584 (sio.close_delay != portp->close_delay) ||
1585 ((sio.flags & ~ASYNC_USR_MASK) !=
1586 (portp->flags & ~ASYNC_USR_MASK)))
1590 portp->flags = (portp->flags & ~ASYNC_USR_MASK) |
1591 (sio.flags & ASYNC_USR_MASK);
1592 portp->baud_base = sio.baud_base;
1593 portp->close_delay = sio.close_delay;
1594 portp->closing_wait = sio.closing_wait;
1595 portp->custom_divisor = sio.custom_divisor;
1597 if ((rc = stli_setport(portp)) < 0)
1602 /*****************************************************************************/
1604 static int stli_tiocmget(struct tty_struct *tty, struct file *file)
1606 struct stliport *portp = tty->driver_data;
1607 struct stlibrd *brdp;
1612 if (portp->brdnr >= stli_nrbrds)
1614 brdp = stli_brds[portp->brdnr];
1617 if (tty->flags & (1 << TTY_IO_ERROR))
1620 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS,
1621 &portp->asig, sizeof(asysigs_t), 1)) < 0)
1624 return stli_mktiocm(portp->asig.sigvalue);
1627 static int stli_tiocmset(struct tty_struct *tty, struct file *file,
1628 unsigned int set, unsigned int clear)
1630 struct stliport *portp = tty->driver_data;
1631 struct stlibrd *brdp;
1632 int rts = -1, dtr = -1;
1636 if (portp->brdnr >= stli_nrbrds)
1638 brdp = stli_brds[portp->brdnr];
1641 if (tty->flags & (1 << TTY_IO_ERROR))
1644 if (set & TIOCM_RTS)
1646 if (set & TIOCM_DTR)
1648 if (clear & TIOCM_RTS)
1650 if (clear & TIOCM_DTR)
1653 stli_mkasysigs(&portp->asig, dtr, rts);
1655 return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1656 sizeof(asysigs_t), 0);
1659 static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg)
1661 struct stliport *portp;
1662 struct stlibrd *brdp;
1665 void __user *argp = (void __user *)arg;
1667 portp = tty->driver_data;
1670 if (portp->brdnr >= stli_nrbrds)
1672 brdp = stli_brds[portp->brdnr];
1676 if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
1677 (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) {
1678 if (tty->flags & (1 << TTY_IO_ERROR))
1686 rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0),
1687 (unsigned __user *) arg);
1690 if ((rc = get_user(ival, (unsigned __user *) arg)) == 0)
1691 tty->termios->c_cflag =
1692 (tty->termios->c_cflag & ~CLOCAL) |
1693 (ival ? CLOCAL : 0);
1696 rc = stli_getserial(portp, argp);
1699 rc = stli_setserial(portp, argp);
1702 rc = put_user(portp->pflag, (unsigned __user *)argp);
1705 if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0)
1706 stli_setport(portp);
1708 case COM_GETPORTSTATS:
1709 rc = stli_getportstats(portp, argp);
1711 case COM_CLRPORTSTATS:
1712 rc = stli_clrportstats(portp, argp);
1718 case TIOCSERGSTRUCT:
1719 case TIOCSERGETMULTI:
1720 case TIOCSERSETMULTI:
1729 /*****************************************************************************/
1732 * This routine assumes that we have user context and can sleep.
1733 * Looks like it is true for the current ttys implementation..!!
1736 static void stli_settermios(struct tty_struct *tty, struct ktermios *old)
1738 struct stliport *portp;
1739 struct stlibrd *brdp;
1740 struct ktermios *tiosp;
1745 portp = tty->driver_data;
1748 if (portp->brdnr >= stli_nrbrds)
1750 brdp = stli_brds[portp->brdnr];
1754 tiosp = tty->termios;
1756 stli_mkasyport(portp, &aport, tiosp);
1757 stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0);
1758 stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1);
1759 stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1760 sizeof(asysigs_t), 0);
1761 if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0))
1762 tty->hw_stopped = 0;
1763 if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL))
1764 wake_up_interruptible(&portp->open_wait);
1767 /*****************************************************************************/
1770 * Attempt to flow control who ever is sending us data. We won't really
1771 * do any flow control action here. We can't directly, and even if we
1772 * wanted to we would have to send a command to the slave. The slave
1773 * knows how to flow control, and will do so when its buffers reach its
1774 * internal high water marks. So what we will do is set a local state
1775 * bit that will stop us sending any RX data up from the poll routine
1776 * (which is the place where RX data from the slave is handled).
1779 static void stli_throttle(struct tty_struct *tty)
1781 struct stliport *portp = tty->driver_data;
1784 set_bit(ST_RXSTOP, &portp->state);
1787 /*****************************************************************************/
1790 * Unflow control the device sending us data... That means that all
1791 * we have to do is clear the RXSTOP state bit. The next poll call
1792 * will then be able to pass the RX data back up.
1795 static void stli_unthrottle(struct tty_struct *tty)
1797 struct stliport *portp = tty->driver_data;
1800 clear_bit(ST_RXSTOP, &portp->state);
1803 /*****************************************************************************/
1806 * Stop the transmitter.
1809 static void stli_stop(struct tty_struct *tty)
1813 /*****************************************************************************/
1816 * Start the transmitter again.
1819 static void stli_start(struct tty_struct *tty)
1823 /*****************************************************************************/
1826 * Hangup this port. This is pretty much like closing the port, only
1827 * a little more brutal. No waiting for data to drain. Shutdown the
1828 * port and maybe drop signals. This is rather tricky really. We want
1829 * to close the port as well.
1832 static void stli_hangup(struct tty_struct *tty)
1834 struct stliport *portp;
1835 struct stlibrd *brdp;
1836 unsigned long flags;
1838 portp = tty->driver_data;
1841 if (portp->brdnr >= stli_nrbrds)
1843 brdp = stli_brds[portp->brdnr];
1847 portp->flags &= ~ASYNC_INITIALIZED;
1849 if (!test_bit(ST_CLOSING, &portp->state))
1850 stli_rawclose(brdp, portp, 0, 0);
1852 spin_lock_irqsave(&stli_lock, flags);
1853 if (tty->termios->c_cflag & HUPCL) {
1854 stli_mkasysigs(&portp->asig, 0, 0);
1855 if (test_bit(ST_CMDING, &portp->state)) {
1856 set_bit(ST_DOSIGS, &portp->state);
1857 set_bit(ST_DOFLUSHTX, &portp->state);
1858 set_bit(ST_DOFLUSHRX, &portp->state);
1860 stli_sendcmd(brdp, portp, A_SETSIGNALSF,
1861 &portp->asig, sizeof(asysigs_t), 0);
1865 clear_bit(ST_TXBUSY, &portp->state);
1866 clear_bit(ST_RXSTOP, &portp->state);
1867 set_bit(TTY_IO_ERROR, &tty->flags);
1869 portp->flags &= ~ASYNC_NORMAL_ACTIVE;
1870 portp->refcount = 0;
1871 spin_unlock_irqrestore(&stli_lock, flags);
1873 wake_up_interruptible(&portp->open_wait);
1876 /*****************************************************************************/
1879 * Flush characters from the lower buffer. We may not have user context
1880 * so we cannot sleep waiting for it to complete. Also we need to check
1881 * if there is chars for this port in the TX cook buffer, and flush them
1885 static void stli_flushbuffer(struct tty_struct *tty)
1887 struct stliport *portp;
1888 struct stlibrd *brdp;
1889 unsigned long ftype, flags;
1891 portp = tty->driver_data;
1894 if (portp->brdnr >= stli_nrbrds)
1896 brdp = stli_brds[portp->brdnr];
1900 spin_lock_irqsave(&brd_lock, flags);
1901 if (tty == stli_txcooktty) {
1902 stli_txcooktty = NULL;
1903 stli_txcooksize = 0;
1904 stli_txcookrealsize = 0;
1906 if (test_bit(ST_CMDING, &portp->state)) {
1907 set_bit(ST_DOFLUSHTX, &portp->state);
1910 if (test_bit(ST_DOFLUSHRX, &portp->state)) {
1912 clear_bit(ST_DOFLUSHRX, &portp->state);
1914 __stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0);
1916 spin_unlock_irqrestore(&brd_lock, flags);
1920 /*****************************************************************************/
1922 static void stli_breakctl(struct tty_struct *tty, int state)
1924 struct stlibrd *brdp;
1925 struct stliport *portp;
1928 portp = tty->driver_data;
1931 if (portp->brdnr >= stli_nrbrds)
1933 brdp = stli_brds[portp->brdnr];
1937 arg = (state == -1) ? BREAKON : BREAKOFF;
1938 stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0);
1941 /*****************************************************************************/
1943 static void stli_waituntilsent(struct tty_struct *tty, int timeout)
1945 struct stliport *portp;
1950 portp = tty->driver_data;
1956 tend = jiffies + timeout;
1958 while (test_bit(ST_TXBUSY, &portp->state)) {
1959 if (signal_pending(current))
1961 msleep_interruptible(20);
1962 if (time_after_eq(jiffies, tend))
1967 /*****************************************************************************/
1969 static void stli_sendxchar(struct tty_struct *tty, char ch)
1971 struct stlibrd *brdp;
1972 struct stliport *portp;
1975 portp = tty->driver_data;
1978 if (portp->brdnr >= stli_nrbrds)
1980 brdp = stli_brds[portp->brdnr];
1984 memset(&actrl, 0, sizeof(asyctrl_t));
1985 if (ch == STOP_CHAR(tty)) {
1986 actrl.rxctrl = CT_STOPFLOW;
1987 } else if (ch == START_CHAR(tty)) {
1988 actrl.rxctrl = CT_STARTFLOW;
1990 actrl.txctrl = CT_SENDCHR;
1993 stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
1996 /*****************************************************************************/
2001 * Format info for a specified port. The line is deliberately limited
2002 * to 80 characters. (If it is too long it will be truncated, if too
2003 * short then padded with spaces).
2006 static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos)
2011 rc = stli_portcmdstats(portp);
2014 if (brdp->state & BST_STARTED) {
2015 switch (stli_comstats.hwid) {
2016 case 0: uart = "2681"; break;
2017 case 1: uart = "SC26198"; break;
2018 default:uart = "CD1400"; break;
2023 sp += sprintf(sp, "%d: uart:%s ", portnr, uart);
2025 if ((brdp->state & BST_STARTED) && (rc >= 0)) {
2026 sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal,
2027 (int) stli_comstats.rxtotal);
2029 if (stli_comstats.rxframing)
2030 sp += sprintf(sp, " fe:%d",
2031 (int) stli_comstats.rxframing);
2032 if (stli_comstats.rxparity)
2033 sp += sprintf(sp, " pe:%d",
2034 (int) stli_comstats.rxparity);
2035 if (stli_comstats.rxbreaks)
2036 sp += sprintf(sp, " brk:%d",
2037 (int) stli_comstats.rxbreaks);
2038 if (stli_comstats.rxoverrun)
2039 sp += sprintf(sp, " oe:%d",
2040 (int) stli_comstats.rxoverrun);
2042 cnt = sprintf(sp, "%s%s%s%s%s ",
2043 (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "",
2044 (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "",
2045 (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "",
2046 (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "",
2047 (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : "");
2052 for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++)
2055 pos[(MAXLINE - 2)] = '+';
2056 pos[(MAXLINE - 1)] = '\n';
2061 /*****************************************************************************/
2064 * Port info, read from the /proc file system.
2067 static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data)
2069 struct stlibrd *brdp;
2070 struct stliport *portp;
2071 unsigned int brdnr, portnr, totalport;
2080 pos += sprintf(pos, "%s: version %s", stli_drvtitle,
2082 while (pos < (page + MAXLINE - 1))
2089 * We scan through for each board, panel and port. The offset is
2090 * calculated on the fly, and irrelevant ports are skipped.
2092 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
2093 brdp = stli_brds[brdnr];
2096 if (brdp->state == 0)
2099 maxoff = curoff + (brdp->nrports * MAXLINE);
2100 if (off >= maxoff) {
2105 totalport = brdnr * STL_MAXPORTS;
2106 for (portnr = 0; (portnr < brdp->nrports); portnr++,
2108 portp = brdp->ports[portnr];
2111 if (off >= (curoff += MAXLINE))
2113 if ((pos - page + MAXLINE) > count)
2115 pos += stli_portinfo(brdp, portp, totalport, pos);
2126 /*****************************************************************************/
2129 * Generic send command routine. This will send a message to the slave,
2130 * of the specified type with the specified argument. Must be very
2131 * careful of data that will be copied out from shared memory -
2132 * containing command results. The command completion is all done from
2133 * a poll routine that does not have user context. Therefore you cannot
2134 * copy back directly into user space, or to the kernel stack of a
2135 * process. This routine does not sleep, so can be called from anywhere.
2137 * The caller must hold the brd_lock (see also stli_sendcmd the usual
2141 static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
2143 cdkhdr_t __iomem *hdrp;
2144 cdkctrl_t __iomem *cp;
2145 unsigned char __iomem *bits;
2147 if (test_bit(ST_CMDING, &portp->state)) {
2148 printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n",
2154 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
2156 memcpy_toio((void __iomem *) &(cp->args[0]), arg, size);
2159 portp->argsize = size;
2162 writel(0, &cp->status);
2163 writel(cmd, &cp->cmd);
2164 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2165 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
2167 writeb(readb(bits) | portp->portbit, bits);
2168 set_bit(ST_CMDING, &portp->state);
2172 static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
2174 unsigned long flags;
2176 spin_lock_irqsave(&brd_lock, flags);
2177 __stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
2178 spin_unlock_irqrestore(&brd_lock, flags);
2181 /*****************************************************************************/
2184 * Read data from shared memory. This assumes that the shared memory
2185 * is enabled and that interrupts are off. Basically we just empty out
2186 * the shared memory buffer into the tty buffer. Must be careful to
2187 * handle the case where we fill up the tty buffer, but still have
2188 * more chars to unload.
2191 static void stli_read(struct stlibrd *brdp, struct stliport *portp)
2193 cdkasyrq_t __iomem *rp;
2194 char __iomem *shbuf;
2195 struct tty_struct *tty;
2196 unsigned int head, tail, size;
2197 unsigned int len, stlen;
2199 if (test_bit(ST_RXSTOP, &portp->state))
2205 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2206 head = (unsigned int) readw(&rp->head);
2207 if (head != ((unsigned int) readw(&rp->head)))
2208 head = (unsigned int) readw(&rp->head);
2209 tail = (unsigned int) readw(&rp->tail);
2210 size = portp->rxsize;
2215 len = size - (tail - head);
2216 stlen = size - tail;
2219 len = tty_buffer_request_room(tty, len);
2221 shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset);
2224 unsigned char *cptr;
2226 stlen = min(len, stlen);
2227 tty_prepare_flip_string(tty, &cptr, stlen);
2228 memcpy_fromio(cptr, shbuf + tail, stlen);
2236 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2237 writew(tail, &rp->tail);
2240 set_bit(ST_RXING, &portp->state);
2242 tty_schedule_flip(tty);
2245 /*****************************************************************************/
2248 * Set up and carry out any delayed commands. There is only a small set
2249 * of slave commands that can be done "off-level". So it is not too
2250 * difficult to deal with them here.
2253 static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp)
2257 if (test_bit(ST_DOSIGS, &portp->state)) {
2258 if (test_bit(ST_DOFLUSHTX, &portp->state) &&
2259 test_bit(ST_DOFLUSHRX, &portp->state))
2260 cmd = A_SETSIGNALSF;
2261 else if (test_bit(ST_DOFLUSHTX, &portp->state))
2262 cmd = A_SETSIGNALSFTX;
2263 else if (test_bit(ST_DOFLUSHRX, &portp->state))
2264 cmd = A_SETSIGNALSFRX;
2267 clear_bit(ST_DOFLUSHTX, &portp->state);
2268 clear_bit(ST_DOFLUSHRX, &portp->state);
2269 clear_bit(ST_DOSIGS, &portp->state);
2270 memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig,
2272 writel(0, &cp->status);
2273 writel(cmd, &cp->cmd);
2274 set_bit(ST_CMDING, &portp->state);
2275 } else if (test_bit(ST_DOFLUSHTX, &portp->state) ||
2276 test_bit(ST_DOFLUSHRX, &portp->state)) {
2277 cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0);
2278 cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0);
2279 clear_bit(ST_DOFLUSHTX, &portp->state);
2280 clear_bit(ST_DOFLUSHRX, &portp->state);
2281 memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int));
2282 writel(0, &cp->status);
2283 writel(A_FLUSH, &cp->cmd);
2284 set_bit(ST_CMDING, &portp->state);
2288 /*****************************************************************************/
2291 * Host command service checking. This handles commands or messages
2292 * coming from the slave to the host. Must have board shared memory
2293 * enabled and interrupts off when called. Notice that by servicing the
2294 * read data last we don't need to change the shared memory pointer
2295 * during processing (which is a slow IO operation).
2296 * Return value indicates if this port is still awaiting actions from
2297 * the slave (like open, command, or even TX data being sent). If 0
2298 * then port is still busy, otherwise no longer busy.
2301 static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp)
2303 cdkasy_t __iomem *ap;
2304 cdkctrl_t __iomem *cp;
2305 struct tty_struct *tty;
2307 unsigned long oldsigs;
2310 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
2314 * Check if we are waiting for an open completion message.
2316 if (test_bit(ST_OPENING, &portp->state)) {
2317 rc = readl(&cp->openarg);
2318 if (readb(&cp->open) == 0 && rc != 0) {
2321 writel(0, &cp->openarg);
2323 clear_bit(ST_OPENING, &portp->state);
2324 wake_up_interruptible(&portp->raw_wait);
2329 * Check if we are waiting for a close completion message.
2331 if (test_bit(ST_CLOSING, &portp->state)) {
2332 rc = (int) readl(&cp->closearg);
2333 if (readb(&cp->close) == 0 && rc != 0) {
2336 writel(0, &cp->closearg);
2338 clear_bit(ST_CLOSING, &portp->state);
2339 wake_up_interruptible(&portp->raw_wait);
2344 * Check if we are waiting for a command completion message. We may
2345 * need to copy out the command results associated with this command.
2347 if (test_bit(ST_CMDING, &portp->state)) {
2348 rc = readl(&cp->status);
2349 if (readl(&cp->cmd) == 0 && rc != 0) {
2352 if (portp->argp != NULL) {
2353 memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]),
2357 writel(0, &cp->status);
2359 clear_bit(ST_CMDING, &portp->state);
2360 stli_dodelaycmd(portp, cp);
2361 wake_up_interruptible(&portp->raw_wait);
2366 * Check for any notification messages ready. This includes lots of
2367 * different types of events - RX chars ready, RX break received,
2368 * TX data low or empty in the slave, modem signals changed state.
2377 if (nt.signal & SG_DCD) {
2378 oldsigs = portp->sigs;
2379 portp->sigs = stli_mktiocm(nt.sigvalue);
2380 clear_bit(ST_GETSIGS, &portp->state);
2381 if ((portp->sigs & TIOCM_CD) &&
2382 ((oldsigs & TIOCM_CD) == 0))
2383 wake_up_interruptible(&portp->open_wait);
2384 if ((oldsigs & TIOCM_CD) &&
2385 ((portp->sigs & TIOCM_CD) == 0)) {
2386 if (portp->flags & ASYNC_CHECK_CD) {
2393 if (nt.data & DT_TXEMPTY)
2394 clear_bit(ST_TXBUSY, &portp->state);
2395 if (nt.data & (DT_TXEMPTY | DT_TXLOW)) {
2402 if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) {
2404 tty_insert_flip_char(tty, 0, TTY_BREAK);
2405 if (portp->flags & ASYNC_SAK) {
2409 tty_schedule_flip(tty);
2413 if (nt.data & DT_RXBUSY) {
2415 stli_read(brdp, portp);
2420 * It might seem odd that we are checking for more RX chars here.
2421 * But, we need to handle the case where the tty buffer was previously
2422 * filled, but we had more characters to pass up. The slave will not
2423 * send any more RX notify messages until the RX buffer has been emptied.
2424 * But it will leave the service bits on (since the buffer is not empty).
2425 * So from here we can try to process more RX chars.
2427 if ((!donerx) && test_bit(ST_RXING, &portp->state)) {
2428 clear_bit(ST_RXING, &portp->state);
2429 stli_read(brdp, portp);
2432 return((test_bit(ST_OPENING, &portp->state) ||
2433 test_bit(ST_CLOSING, &portp->state) ||
2434 test_bit(ST_CMDING, &portp->state) ||
2435 test_bit(ST_TXBUSY, &portp->state) ||
2436 test_bit(ST_RXING, &portp->state)) ? 0 : 1);
2439 /*****************************************************************************/
2442 * Service all ports on a particular board. Assumes that the boards
2443 * shared memory is enabled, and that the page pointer is pointed
2444 * at the cdk header structure.
2447 static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp)
2449 struct stliport *portp;
2450 unsigned char hostbits[(STL_MAXCHANS / 8) + 1];
2451 unsigned char slavebits[(STL_MAXCHANS / 8) + 1];
2452 unsigned char __iomem *slavep;
2453 int bitpos, bitat, bitsize;
2454 int channr, nrdevs, slavebitchange;
2456 bitsize = brdp->bitsize;
2457 nrdevs = brdp->nrdevs;
2460 * Check if slave wants any service. Basically we try to do as
2461 * little work as possible here. There are 2 levels of service
2462 * bits. So if there is nothing to do we bail early. We check
2463 * 8 service bits at a time in the inner loop, so we can bypass
2464 * the lot if none of them want service.
2466 memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset),
2469 memset(&slavebits[0], 0, bitsize);
2472 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2473 if (hostbits[bitpos] == 0)
2475 channr = bitpos * 8;
2476 for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) {
2477 if (hostbits[bitpos] & bitat) {
2478 portp = brdp->ports[(channr - 1)];
2479 if (stli_hostcmd(brdp, portp)) {
2481 slavebits[bitpos] |= bitat;
2488 * If any of the ports are no longer busy then update them in the
2489 * slave request bits. We need to do this after, since a host port
2490 * service may initiate more slave requests.
2492 if (slavebitchange) {
2493 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2494 slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset;
2495 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2496 if (readb(slavebits + bitpos))
2497 writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos);
2502 /*****************************************************************************/
2505 * Driver poll routine. This routine polls the boards in use and passes
2506 * messages back up to host when necessary. This is actually very
2507 * CPU efficient, since we will always have the kernel poll clock, it
2508 * adds only a few cycles when idle (since board service can be
2509 * determined very easily), but when loaded generates no interrupts
2510 * (with their expensive associated context change).
2513 static void stli_poll(unsigned long arg)
2515 cdkhdr_t __iomem *hdrp;
2516 struct stlibrd *brdp;
2519 mod_timer(&stli_timerlist, STLI_TIMEOUT);
2522 * Check each board and do any servicing required.
2524 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
2525 brdp = stli_brds[brdnr];
2528 if ((brdp->state & BST_STARTED) == 0)
2531 spin_lock(&brd_lock);
2533 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2534 if (readb(&hdrp->hostreq))
2535 stli_brdpoll(brdp, hdrp);
2537 spin_unlock(&brd_lock);
2541 /*****************************************************************************/
2544 * Translate the termios settings into the port setting structure of
2548 static void stli_mkasyport(struct stliport *portp, asyport_t *pp, struct ktermios *tiosp)
2550 memset(pp, 0, sizeof(asyport_t));
2553 * Start of by setting the baud, char size, parity and stop bit info.
2555 pp->baudout = tty_get_baud_rate(portp->tty);
2556 if ((tiosp->c_cflag & CBAUD) == B38400) {
2557 if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
2558 pp->baudout = 57600;
2559 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
2560 pp->baudout = 115200;
2561 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
2562 pp->baudout = 230400;
2563 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
2564 pp->baudout = 460800;
2565 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)
2566 pp->baudout = (portp->baud_base / portp->custom_divisor);
2568 if (pp->baudout > STL_MAXBAUD)
2569 pp->baudout = STL_MAXBAUD;
2570 pp->baudin = pp->baudout;
2572 switch (tiosp->c_cflag & CSIZE) {
2587 if (tiosp->c_cflag & CSTOPB)
2588 pp->stopbs = PT_STOP2;
2590 pp->stopbs = PT_STOP1;
2592 if (tiosp->c_cflag & PARENB) {
2593 if (tiosp->c_cflag & PARODD)
2594 pp->parity = PT_ODDPARITY;
2596 pp->parity = PT_EVENPARITY;
2598 pp->parity = PT_NOPARITY;
2602 * Set up any flow control options enabled.
2604 if (tiosp->c_iflag & IXON) {
2606 if (tiosp->c_iflag & IXANY)
2607 pp->flow |= F_IXANY;
2609 if (tiosp->c_cflag & CRTSCTS)
2610 pp->flow |= (F_RTSFLOW | F_CTSFLOW);
2612 pp->startin = tiosp->c_cc[VSTART];
2613 pp->stopin = tiosp->c_cc[VSTOP];
2614 pp->startout = tiosp->c_cc[VSTART];
2615 pp->stopout = tiosp->c_cc[VSTOP];
2618 * Set up the RX char marking mask with those RX error types we must
2619 * catch. We can get the slave to help us out a little here, it will
2620 * ignore parity errors and breaks for us, and mark parity errors in
2623 if (tiosp->c_iflag & IGNPAR)
2624 pp->iflag |= FI_IGNRXERRS;
2625 if (tiosp->c_iflag & IGNBRK)
2626 pp->iflag |= FI_IGNBREAK;
2628 portp->rxmarkmsk = 0;
2629 if (tiosp->c_iflag & (INPCK | PARMRK))
2630 pp->iflag |= FI_1MARKRXERRS;
2631 if (tiosp->c_iflag & BRKINT)
2632 portp->rxmarkmsk |= BRKINT;
2635 * Set up clocal processing as required.
2637 if (tiosp->c_cflag & CLOCAL)
2638 portp->flags &= ~ASYNC_CHECK_CD;
2640 portp->flags |= ASYNC_CHECK_CD;
2643 * Transfer any persistent flags into the asyport structure.
2645 pp->pflag = (portp->pflag & 0xffff);
2646 pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0;
2647 pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0;
2648 pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0;
2651 /*****************************************************************************/
2654 * Construct a slave signals structure for setting the DTR and RTS
2655 * signals as specified.
2658 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts)
2660 memset(sp, 0, sizeof(asysigs_t));
2662 sp->signal |= SG_DTR;
2663 sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0);
2666 sp->signal |= SG_RTS;
2667 sp->sigvalue |= ((rts > 0) ? SG_RTS : 0);
2671 /*****************************************************************************/
2674 * Convert the signals returned from the slave into a local TIOCM type
2675 * signals value. We keep them locally in TIOCM format.
2678 static long stli_mktiocm(unsigned long sigvalue)
2681 tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0);
2682 tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0);
2683 tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0);
2684 tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0);
2685 tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0);
2686 tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0);
2690 /*****************************************************************************/
2693 * All panels and ports actually attached have been worked out. All
2694 * we need to do here is set up the appropriate per port data structures.
2697 static int stli_initports(struct stlibrd *brdp)
2699 struct stliport *portp;
2700 unsigned int i, panelnr, panelport;
2702 for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) {
2703 portp = kzalloc(sizeof(struct stliport), GFP_KERNEL);
2705 printk("STALLION: failed to allocate port structure\n");
2709 portp->magic = STLI_PORTMAGIC;
2711 portp->brdnr = brdp->brdnr;
2712 portp->panelnr = panelnr;
2713 portp->baud_base = STL_BAUDBASE;
2714 portp->close_delay = STL_CLOSEDELAY;
2715 portp->closing_wait = 30 * HZ;
2716 init_waitqueue_head(&portp->open_wait);
2717 init_waitqueue_head(&portp->close_wait);
2718 init_waitqueue_head(&portp->raw_wait);
2720 if (panelport >= brdp->panels[panelnr]) {
2724 brdp->ports[i] = portp;
2730 /*****************************************************************************/
2733 * All the following routines are board specific hardware operations.
2736 static void stli_ecpinit(struct stlibrd *brdp)
2738 unsigned long memconf;
2740 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
2742 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2745 memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT;
2746 outb(memconf, (brdp->iobase + ECP_ATMEMAR));
2749 /*****************************************************************************/
2751 static void stli_ecpenable(struct stlibrd *brdp)
2753 outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR));
2756 /*****************************************************************************/
2758 static void stli_ecpdisable(struct stlibrd *brdp)
2760 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2763 /*****************************************************************************/
2765 static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2770 if (offset > brdp->memsize) {
2771 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2772 "range at line=%d(%d), brd=%d\n",
2773 (int) offset, line, __LINE__, brdp->brdnr);
2777 ptr = brdp->membase + (offset % ECP_ATPAGESIZE);
2778 val = (unsigned char) (offset / ECP_ATPAGESIZE);
2780 outb(val, (brdp->iobase + ECP_ATMEMPR));
2784 /*****************************************************************************/
2786 static void stli_ecpreset(struct stlibrd *brdp)
2788 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
2790 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2794 /*****************************************************************************/
2796 static void stli_ecpintr(struct stlibrd *brdp)
2798 outb(0x1, brdp->iobase);
2801 /*****************************************************************************/
2804 * The following set of functions act on ECP EISA boards.
2807 static void stli_ecpeiinit(struct stlibrd *brdp)
2809 unsigned long memconf;
2811 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
2812 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
2814 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2817 memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL;
2818 outb(memconf, (brdp->iobase + ECP_EIMEMARL));
2819 memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH;
2820 outb(memconf, (brdp->iobase + ECP_EIMEMARH));
2823 /*****************************************************************************/
2825 static void stli_ecpeienable(struct stlibrd *brdp)
2827 outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR));
2830 /*****************************************************************************/
2832 static void stli_ecpeidisable(struct stlibrd *brdp)
2834 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2837 /*****************************************************************************/
2839 static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2844 if (offset > brdp->memsize) {
2845 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2846 "range at line=%d(%d), brd=%d\n",
2847 (int) offset, line, __LINE__, brdp->brdnr);
2851 ptr = brdp->membase + (offset % ECP_EIPAGESIZE);
2852 if (offset < ECP_EIPAGESIZE)
2855 val = ECP_EIENABLE | 0x40;
2857 outb(val, (brdp->iobase + ECP_EICONFR));
2861 /*****************************************************************************/
2863 static void stli_ecpeireset(struct stlibrd *brdp)
2865 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
2867 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2871 /*****************************************************************************/
2874 * The following set of functions act on ECP MCA boards.
2877 static void stli_ecpmcenable(struct stlibrd *brdp)
2879 outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR));
2882 /*****************************************************************************/
2884 static void stli_ecpmcdisable(struct stlibrd *brdp)
2886 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
2889 /*****************************************************************************/
2891 static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2896 if (offset > brdp->memsize) {
2897 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2898 "range at line=%d(%d), brd=%d\n",
2899 (int) offset, line, __LINE__, brdp->brdnr);
2903 ptr = brdp->membase + (offset % ECP_MCPAGESIZE);
2904 val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE;
2906 outb(val, (brdp->iobase + ECP_MCCONFR));
2910 /*****************************************************************************/
2912 static void stli_ecpmcreset(struct stlibrd *brdp)
2914 outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR));
2916 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
2920 /*****************************************************************************/
2923 * The following set of functions act on ECP PCI boards.
2926 static void stli_ecppciinit(struct stlibrd *brdp)
2928 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
2930 outb(0, (brdp->iobase + ECP_PCICONFR));
2934 /*****************************************************************************/
2936 static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2941 if (offset > brdp->memsize) {
2942 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2943 "range at line=%d(%d), board=%d\n",
2944 (int) offset, line, __LINE__, brdp->brdnr);
2948 ptr = brdp->membase + (offset % ECP_PCIPAGESIZE);
2949 val = (offset / ECP_PCIPAGESIZE) << 1;
2951 outb(val, (brdp->iobase + ECP_PCICONFR));
2955 /*****************************************************************************/
2957 static void stli_ecppcireset(struct stlibrd *brdp)
2959 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
2961 outb(0, (brdp->iobase + ECP_PCICONFR));
2965 /*****************************************************************************/
2968 * The following routines act on ONboards.
2971 static void stli_onbinit(struct stlibrd *brdp)
2973 unsigned long memconf;
2975 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
2977 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
2980 memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT;
2981 outb(memconf, (brdp->iobase + ONB_ATMEMAR));
2982 outb(0x1, brdp->iobase);
2986 /*****************************************************************************/
2988 static void stli_onbenable(struct stlibrd *brdp)
2990 outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR));
2993 /*****************************************************************************/
2995 static void stli_onbdisable(struct stlibrd *brdp)
2997 outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR));
3000 /*****************************************************************************/
3002 static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
3006 if (offset > brdp->memsize) {
3007 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3008 "range at line=%d(%d), brd=%d\n",
3009 (int) offset, line, __LINE__, brdp->brdnr);
3012 ptr = brdp->membase + (offset % ONB_ATPAGESIZE);
3017 /*****************************************************************************/
3019 static void stli_onbreset(struct stlibrd *brdp)
3021 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
3023 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
3027 /*****************************************************************************/
3030 * The following routines act on ONboard EISA.
3033 static void stli_onbeinit(struct stlibrd *brdp)
3035 unsigned long memconf;
3037 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
3038 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3040 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3043 memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL;
3044 outb(memconf, (brdp->iobase + ONB_EIMEMARL));
3045 memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH;
3046 outb(memconf, (brdp->iobase + ONB_EIMEMARH));
3047 outb(0x1, brdp->iobase);
3051 /*****************************************************************************/
3053 static void stli_onbeenable(struct stlibrd *brdp)
3055 outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR));
3058 /*****************************************************************************/
3060 static void stli_onbedisable(struct stlibrd *brdp)
3062 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3065 /*****************************************************************************/
3067 static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
3072 if (offset > brdp->memsize) {
3073 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3074 "range at line=%d(%d), brd=%d\n",
3075 (int) offset, line, __LINE__, brdp->brdnr);
3079 ptr = brdp->membase + (offset % ONB_EIPAGESIZE);
3080 if (offset < ONB_EIPAGESIZE)
3083 val = ONB_EIENABLE | 0x40;
3085 outb(val, (brdp->iobase + ONB_EICONFR));
3089 /*****************************************************************************/
3091 static void stli_onbereset(struct stlibrd *brdp)
3093 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3095 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3099 /*****************************************************************************/
3102 * The following routines act on Brumby boards.
3105 static void stli_bbyinit(struct stlibrd *brdp)
3107 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
3109 outb(0, (brdp->iobase + BBY_ATCONFR));
3111 outb(0x1, brdp->iobase);
3115 /*****************************************************************************/
3117 static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
3122 BUG_ON(offset > brdp->memsize);
3124 ptr = brdp->membase + (offset % BBY_PAGESIZE);
3125 val = (unsigned char) (offset / BBY_PAGESIZE);
3126 outb(val, (brdp->iobase + BBY_ATCONFR));
3130 /*****************************************************************************/
3132 static void stli_bbyreset(struct stlibrd *brdp)
3134 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
3136 outb(0, (brdp->iobase + BBY_ATCONFR));
3140 /*****************************************************************************/
3143 * The following routines act on original old Stallion boards.
3146 static void stli_stalinit(struct stlibrd *brdp)
3148 outb(0x1, brdp->iobase);
3152 /*****************************************************************************/
3154 static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
3156 BUG_ON(offset > brdp->memsize);
3157 return brdp->membase + (offset % STAL_PAGESIZE);
3160 /*****************************************************************************/
3162 static void stli_stalreset(struct stlibrd *brdp)
3166 vecp = (u32 __iomem *) (brdp->membase + 0x30);
3167 writel(0xffff0000, vecp);
3168 outb(0, brdp->iobase);
3172 /*****************************************************************************/
3175 * Try to find an ECP board and initialize it. This handles only ECP
3179 static int stli_initecp(struct stlibrd *brdp)
3182 cdkecpsig_t __iomem *sigsp;
3183 unsigned int status, nxtid;
3185 int retval, panelnr, nrports;
3187 if ((brdp->iobase == 0) || (brdp->memaddr == 0)) {
3192 brdp->iosize = ECP_IOSIZE;
3194 if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
3200 * Based on the specific board type setup the common vars to access
3201 * and enable shared memory. Set all board specific information now
3204 switch (brdp->brdtype) {
3206 brdp->memsize = ECP_MEMSIZE;
3207 brdp->pagesize = ECP_ATPAGESIZE;
3208 brdp->init = stli_ecpinit;
3209 brdp->enable = stli_ecpenable;
3210 brdp->reenable = stli_ecpenable;
3211 brdp->disable = stli_ecpdisable;
3212 brdp->getmemptr = stli_ecpgetmemptr;
3213 brdp->intr = stli_ecpintr;
3214 brdp->reset = stli_ecpreset;
3215 name = "serial(EC8/64)";
3219 brdp->memsize = ECP_MEMSIZE;
3220 brdp->pagesize = ECP_EIPAGESIZE;
3221 brdp->init = stli_ecpeiinit;
3222 brdp->enable = stli_ecpeienable;
3223 brdp->reenable = stli_ecpeienable;
3224 brdp->disable = stli_ecpeidisable;
3225 brdp->getmemptr = stli_ecpeigetmemptr;
3226 brdp->intr = stli_ecpintr;
3227 brdp->reset = stli_ecpeireset;
3228 name = "serial(EC8/64-EI)";
3232 brdp->memsize = ECP_MEMSIZE;
3233 brdp->pagesize = ECP_MCPAGESIZE;
3235 brdp->enable = stli_ecpmcenable;
3236 brdp->reenable = stli_ecpmcenable;
3237 brdp->disable = stli_ecpmcdisable;
3238 brdp->getmemptr = stli_ecpmcgetmemptr;
3239 brdp->intr = stli_ecpintr;
3240 brdp->reset = stli_ecpmcreset;
3241 name = "serial(EC8/64-MCA)";
3245 brdp->memsize = ECP_PCIMEMSIZE;
3246 brdp->pagesize = ECP_PCIPAGESIZE;
3247 brdp->init = stli_ecppciinit;
3248 brdp->enable = NULL;
3249 brdp->reenable = NULL;
3250 brdp->disable = NULL;
3251 brdp->getmemptr = stli_ecppcigetmemptr;
3252 brdp->intr = stli_ecpintr;
3253 brdp->reset = stli_ecppcireset;
3254 name = "serial(EC/RA-PCI)";
3263 * The per-board operations structure is all set up, so now let's go
3264 * and get the board operational. Firstly initialize board configuration
3265 * registers. Set the memory mapping info so we can get at the boards
3270 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
3271 if (brdp->membase == NULL) {
3277 * Now that all specific code is set up, enable the shared memory and
3278 * look for the a signature area that will tell us exactly what board
3279 * this is, and what it is connected to it.
3282 sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3283 memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t));
3286 if (sig.magic != cpu_to_le32(ECP_MAGIC)) {
3292 * Scan through the signature looking at the panels connected to the
3293 * board. Calculate the total number of ports as we go.
3295 for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) {
3296 status = sig.panelid[nxtid];
3297 if ((status & ECH_PNLIDMASK) != nxtid)
3300 brdp->panelids[panelnr] = status;
3301 nrports = (status & ECH_PNL16PORT) ? 16 : 8;
3302 if ((nrports == 16) && ((status & ECH_PNLXPID) == 0))
3304 brdp->panels[panelnr] = nrports;
3305 brdp->nrports += nrports;
3311 brdp->state |= BST_FOUND;
3314 iounmap(brdp->membase);
3315 brdp->membase = NULL;
3317 release_region(brdp->iobase, brdp->iosize);
3322 /*****************************************************************************/
3325 * Try to find an ONboard, Brumby or Stallion board and initialize it.
3326 * This handles only these board types.
3329 static int stli_initonb(struct stlibrd *brdp)
3332 cdkonbsig_t __iomem *sigsp;
3337 * Do a basic sanity check on the IO and memory addresses.
3339 if (brdp->iobase == 0 || brdp->memaddr == 0) {
3344 brdp->iosize = ONB_IOSIZE;
3346 if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
3352 * Based on the specific board type setup the common vars to access
3353 * and enable shared memory. Set all board specific information now
3356 switch (brdp->brdtype) {
3359 brdp->memsize = ONB_MEMSIZE;
3360 brdp->pagesize = ONB_ATPAGESIZE;
3361 brdp->init = stli_onbinit;
3362 brdp->enable = stli_onbenable;
3363 brdp->reenable = stli_onbenable;
3364 brdp->disable = stli_onbdisable;
3365 brdp->getmemptr = stli_onbgetmemptr;
3366 brdp->intr = stli_ecpintr;
3367 brdp->reset = stli_onbreset;
3368 if (brdp->memaddr > 0x100000)
3369 brdp->enabval = ONB_MEMENABHI;
3371 brdp->enabval = ONB_MEMENABLO;
3372 name = "serial(ONBoard)";
3376 brdp->memsize = ONB_EIMEMSIZE;
3377 brdp->pagesize = ONB_EIPAGESIZE;
3378 brdp->init = stli_onbeinit;
3379 brdp->enable = stli_onbeenable;
3380 brdp->reenable = stli_onbeenable;
3381 brdp->disable = stli_onbedisable;
3382 brdp->getmemptr = stli_onbegetmemptr;
3383 brdp->intr = stli_ecpintr;
3384 brdp->reset = stli_onbereset;
3385 name = "serial(ONBoard/E)";
3389 brdp->memsize = BBY_MEMSIZE;
3390 brdp->pagesize = BBY_PAGESIZE;
3391 brdp->init = stli_bbyinit;
3392 brdp->enable = NULL;
3393 brdp->reenable = NULL;
3394 brdp->disable = NULL;
3395 brdp->getmemptr = stli_bbygetmemptr;
3396 brdp->intr = stli_ecpintr;
3397 brdp->reset = stli_bbyreset;
3398 name = "serial(Brumby)";
3402 brdp->memsize = STAL_MEMSIZE;
3403 brdp->pagesize = STAL_PAGESIZE;
3404 brdp->init = stli_stalinit;
3405 brdp->enable = NULL;
3406 brdp->reenable = NULL;
3407 brdp->disable = NULL;
3408 brdp->getmemptr = stli_stalgetmemptr;
3409 brdp->intr = stli_ecpintr;
3410 brdp->reset = stli_stalreset;
3411 name = "serial(Stallion)";
3420 * The per-board operations structure is all set up, so now let's go
3421 * and get the board operational. Firstly initialize board configuration
3422 * registers. Set the memory mapping info so we can get at the boards
3427 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
3428 if (brdp->membase == NULL) {
3434 * Now that all specific code is set up, enable the shared memory and
3435 * look for the a signature area that will tell us exactly what board
3436 * this is, and how many ports.
3439 sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3440 memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t));
3443 if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) ||
3444 sig.magic1 != cpu_to_le16(ONB_MAGIC1) ||
3445 sig.magic2 != cpu_to_le16(ONB_MAGIC2) ||
3446 sig.magic3 != cpu_to_le16(ONB_MAGIC3)) {
3452 * Scan through the signature alive mask and calculate how many ports
3453 * there are on this board.
3459 for (i = 0; (i < 16); i++) {
3460 if (((sig.amask0 << i) & 0x8000) == 0)
3465 brdp->panels[0] = brdp->nrports;
3468 brdp->state |= BST_FOUND;
3471 iounmap(brdp->membase);
3472 brdp->membase = NULL;
3474 release_region(brdp->iobase, brdp->iosize);
3479 /*****************************************************************************/
3482 * Start up a running board. This routine is only called after the
3483 * code has been down loaded to the board and is operational. It will
3484 * read in the memory map, and get the show on the road...
3487 static int stli_startbrd(struct stlibrd *brdp)
3489 cdkhdr_t __iomem *hdrp;
3490 cdkmem_t __iomem *memp;
3491 cdkasy_t __iomem *ap;
3492 unsigned long flags;
3493 unsigned int portnr, nrdevs, i;
3494 struct stliport *portp;
3498 spin_lock_irqsave(&brd_lock, flags);
3500 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
3501 nrdevs = hdrp->nrdevs;
3504 printk("%s(%d): CDK version %d.%d.%d --> "
3505 "nrdevs=%d memp=%x hostp=%x slavep=%x\n",
3506 __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification),
3507 readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp),
3508 readl(&hdrp->slavep));
3511 if (nrdevs < (brdp->nrports + 1)) {
3512 printk(KERN_ERR "STALLION: slave failed to allocate memory for "
3513 "all devices, devices=%d\n", nrdevs);
3514 brdp->nrports = nrdevs - 1;
3516 brdp->nrdevs = nrdevs;
3517 brdp->hostoffset = hdrp->hostp - CDK_CDKADDR;
3518 brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR;
3519 brdp->bitsize = (nrdevs + 7) / 8;
3520 memoff = readl(&hdrp->memp);
3521 if (memoff > brdp->memsize) {
3522 printk(KERN_ERR "STALLION: corrupted shared memory region?\n");
3524 goto stli_donestartup;
3526 memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff);
3527 if (readw(&memp->dtype) != TYP_ASYNCTRL) {
3528 printk(KERN_ERR "STALLION: no slave control device found\n");
3529 goto stli_donestartup;
3534 * Cycle through memory allocation of each port. We are guaranteed to
3535 * have all ports inside the first page of slave window, so no need to
3536 * change pages while reading memory map.
3538 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) {
3539 if (readw(&memp->dtype) != TYP_ASYNC)
3541 portp = brdp->ports[portnr];
3545 portp->addr = readl(&memp->offset);
3546 portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs));
3547 portp->portidx = (unsigned char) (i / 8);
3548 portp->portbit = (unsigned char) (0x1 << (i % 8));
3551 writeb(0xff, &hdrp->slavereq);
3554 * For each port setup a local copy of the RX and TX buffer offsets
3555 * and sizes. We do this separate from the above, because we need to
3556 * move the shared memory page...
3558 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) {
3559 portp = brdp->ports[portnr];
3562 if (portp->addr == 0)
3564 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
3566 portp->rxsize = readw(&ap->rxq.size);
3567 portp->txsize = readw(&ap->txq.size);
3568 portp->rxoffset = readl(&ap->rxq.offset);
3569 portp->txoffset = readl(&ap->txq.offset);
3575 spin_unlock_irqrestore(&brd_lock, flags);
3578 brdp->state |= BST_STARTED;
3580 if (! stli_timeron) {
3582 mod_timer(&stli_timerlist, STLI_TIMEOUT);
3588 /*****************************************************************************/
3591 * Probe and initialize the specified board.
3594 static int __devinit stli_brdinit(struct stlibrd *brdp)
3598 switch (brdp->brdtype) {
3603 retval = stli_initecp(brdp);
3610 retval = stli_initonb(brdp);
3613 printk(KERN_ERR "STALLION: board=%d is unknown board "
3614 "type=%d\n", brdp->brdnr, brdp->brdtype);
3621 stli_initports(brdp);
3622 printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x "
3623 "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype],
3624 brdp->brdnr, brdp->iobase, (int) brdp->memaddr,
3625 brdp->nrpanels, brdp->nrports);
3629 #if STLI_EISAPROBE != 0
3630 /*****************************************************************************/
3633 * Probe around trying to find where the EISA boards shared memory
3634 * might be. This is a bit if hack, but it is the best we can do.
3637 static int stli_eisamemprobe(struct stlibrd *brdp)
3639 cdkecpsig_t ecpsig, __iomem *ecpsigp;
3640 cdkonbsig_t onbsig, __iomem *onbsigp;
3644 * First up we reset the board, to get it into a known state. There
3645 * is only 2 board types here we need to worry about. Don;t use the
3646 * standard board init routine here, it programs up the shared
3647 * memory address, and we don't know it yet...
3649 if (brdp->brdtype == BRD_ECPE) {
3650 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
3651 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
3653 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3655 stli_ecpeienable(brdp);
3656 } else if (brdp->brdtype == BRD_ONBOARDE) {
3657 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
3658 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3660 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3662 outb(0x1, brdp->iobase);
3664 stli_onbeenable(brdp);
3670 brdp->memsize = ECP_MEMSIZE;
3673 * Board shared memory is enabled, so now we have a poke around and
3674 * see if we can find it.
3676 for (i = 0; (i < stli_eisamempsize); i++) {
3677 brdp->memaddr = stli_eisamemprobeaddrs[i];
3678 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
3679 if (brdp->membase == NULL)
3682 if (brdp->brdtype == BRD_ECPE) {
3683 ecpsigp = stli_ecpeigetmemptr(brdp,
3684 CDK_SIGADDR, __LINE__);
3685 memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t));
3686 if (ecpsig.magic == cpu_to_le32(ECP_MAGIC))
3689 onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp,
3690 CDK_SIGADDR, __LINE__);
3691 memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t));
3692 if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) &&
3693 (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) &&
3694 (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) &&
3695 (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3)))
3699 iounmap(brdp->membase);
3705 * Regardless of whether we found the shared memory or not we must
3706 * disable the region. After that return success or failure.
3708 if (brdp->brdtype == BRD_ECPE)
3709 stli_ecpeidisable(brdp);
3711 stli_onbedisable(brdp);
3715 brdp->membase = NULL;
3716 printk(KERN_ERR "STALLION: failed to probe shared memory "
3717 "region for %s in EISA slot=%d\n",
3718 stli_brdnames[brdp->brdtype], (brdp->iobase >> 12));
3725 static int stli_getbrdnr(void)
3729 for (i = 0; i < STL_MAXBRDS; i++) {
3730 if (!stli_brds[i]) {
3731 if (i >= stli_nrbrds)
3732 stli_nrbrds = i + 1;
3739 #if STLI_EISAPROBE != 0
3740 /*****************************************************************************/
3743 * Probe around and try to find any EISA boards in system. The biggest
3744 * problem here is finding out what memory address is associated with
3745 * an EISA board after it is found. The registers of the ECPE and
3746 * ONboardE are not readable - so we can't read them from there. We
3747 * don't have access to the EISA CMOS (or EISA BIOS) so we don't
3748 * actually have any way to find out the real value. The best we can
3749 * do is go probing around in the usual places hoping we can find it.
3752 static int stli_findeisabrds(void)
3754 struct stlibrd *brdp;
3755 unsigned int iobase, eid, i;
3756 int brdnr, found = 0;
3759 * Firstly check if this is an EISA system. If this is not an EISA system then
3760 * don't bother going any further!
3766 * Looks like an EISA system, so go searching for EISA boards.
3768 for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) {
3769 outb(0xff, (iobase + 0xc80));
3770 eid = inb(iobase + 0xc80);
3771 eid |= inb(iobase + 0xc81) << 8;
3772 if (eid != STL_EISAID)
3776 * We have found a board. Need to check if this board was
3777 * statically configured already (just in case!).
3779 for (i = 0; (i < STL_MAXBRDS); i++) {
3780 brdp = stli_brds[i];
3783 if (brdp->iobase == iobase)
3786 if (i < STL_MAXBRDS)
3790 * We have found a Stallion board and it is not configured already.
3791 * Allocate a board structure and initialize it.
3793 if ((brdp = stli_allocbrd()) == NULL)
3794 return found ? : -ENOMEM;
3795 brdnr = stli_getbrdnr();
3797 return found ? : -ENOMEM;
3798 brdp->brdnr = (unsigned int)brdnr;
3799 eid = inb(iobase + 0xc82);
3800 if (eid == ECP_EISAID)
3801 brdp->brdtype = BRD_ECPE;
3802 else if (eid == ONB_EISAID)
3803 brdp->brdtype = BRD_ONBOARDE;
3805 brdp->brdtype = BRD_UNKNOWN;
3806 brdp->iobase = iobase;
3807 outb(0x1, (iobase + 0xc84));
3808 if (stli_eisamemprobe(brdp))
3809 outb(0, (iobase + 0xc84));
3810 if (stli_brdinit(brdp) < 0) {
3815 stli_brds[brdp->brdnr] = brdp;
3818 for (i = 0; i < brdp->nrports; i++)
3819 tty_register_device(stli_serial,
3820 brdp->brdnr * STL_MAXPORTS + i, NULL);
3826 static inline int stli_findeisabrds(void) { return 0; }
3829 /*****************************************************************************/
3832 * Find the next available board number that is free.
3835 /*****************************************************************************/
3838 * We have a Stallion board. Allocate a board structure and
3839 * initialize it. Read its IO and MEMORY resources from PCI
3840 * configuration space.
3843 static int __devinit stli_pciprobe(struct pci_dev *pdev,
3844 const struct pci_device_id *ent)
3846 struct stlibrd *brdp;
3848 int brdnr, retval = -EIO;
3850 retval = pci_enable_device(pdev);
3853 brdp = stli_allocbrd();
3858 mutex_lock(&stli_brdslock);
3859 brdnr = stli_getbrdnr();
3861 printk(KERN_INFO "STALLION: too many boards found, "
3862 "maximum supported %d\n", STL_MAXBRDS);
3863 mutex_unlock(&stli_brdslock);
3867 brdp->brdnr = (unsigned int)brdnr;
3868 stli_brds[brdp->brdnr] = brdp;
3869 mutex_unlock(&stli_brdslock);
3870 brdp->brdtype = BRD_ECPPCI;
3872 * We have all resources from the board, so lets setup the actual
3873 * board structure now.
3875 brdp->iobase = pci_resource_start(pdev, 3);
3876 brdp->memaddr = pci_resource_start(pdev, 2);
3877 retval = stli_brdinit(brdp);
3881 brdp->state |= BST_PROBED;
3882 pci_set_drvdata(pdev, brdp);
3885 brdp->enable = NULL;
3886 brdp->disable = NULL;
3888 for (i = 0; i < brdp->nrports; i++)
3889 tty_register_device(stli_serial, brdp->brdnr * STL_MAXPORTS + i,
3894 stli_brds[brdp->brdnr] = NULL;
3901 static void stli_pciremove(struct pci_dev *pdev)
3903 struct stlibrd *brdp = pci_get_drvdata(pdev);
3905 stli_cleanup_ports(brdp);
3907 iounmap(brdp->membase);
3908 if (brdp->iosize > 0)
3909 release_region(brdp->iobase, brdp->iosize);
3911 stli_brds[brdp->brdnr] = NULL;
3915 static struct pci_driver stli_pcidriver = {
3916 .name = "istallion",
3917 .id_table = istallion_pci_tbl,
3918 .probe = stli_pciprobe,
3919 .remove = __devexit_p(stli_pciremove)
3921 /*****************************************************************************/
3924 * Allocate a new board structure. Fill out the basic info in it.
3927 static struct stlibrd *stli_allocbrd(void)
3929 struct stlibrd *brdp;
3931 brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL);
3933 printk(KERN_ERR "STALLION: failed to allocate memory "
3934 "(size=%Zd)\n", sizeof(struct stlibrd));
3937 brdp->magic = STLI_BOARDMAGIC;
3941 /*****************************************************************************/
3944 * Scan through all the boards in the configuration and see what we
3948 static int stli_initbrds(void)
3950 struct stlibrd *brdp, *nxtbrdp;
3951 struct stlconf conf;
3952 unsigned int i, j, found = 0;
3955 for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp);
3957 memset(&conf, 0, sizeof(conf));
3958 if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0)
3960 if ((brdp = stli_allocbrd()) == NULL)
3962 brdp->brdnr = stli_nrbrds;
3963 brdp->brdtype = conf.brdtype;
3964 brdp->iobase = conf.ioaddr1;
3965 brdp->memaddr = conf.memaddr;
3966 if (stli_brdinit(brdp) < 0) {
3970 stli_brds[brdp->brdnr] = brdp;
3973 for (i = 0; i < brdp->nrports; i++)
3974 tty_register_device(stli_serial,
3975 brdp->brdnr * STL_MAXPORTS + i, NULL);
3978 retval = stli_findeisabrds();
3983 * All found boards are initialized. Now for a little optimization, if
3984 * no boards are sharing the "shared memory" regions then we can just
3985 * leave them all enabled. This is in fact the usual case.
3988 if (stli_nrbrds > 1) {
3989 for (i = 0; (i < stli_nrbrds); i++) {
3990 brdp = stli_brds[i];
3993 for (j = i + 1; (j < stli_nrbrds); j++) {
3994 nxtbrdp = stli_brds[j];
3995 if (nxtbrdp == NULL)
3997 if ((brdp->membase >= nxtbrdp->membase) &&
3998 (brdp->membase <= (nxtbrdp->membase +
3999 nxtbrdp->memsize - 1))) {
4007 if (stli_shared == 0) {
4008 for (i = 0; (i < stli_nrbrds); i++) {
4009 brdp = stli_brds[i];
4012 if (brdp->state & BST_FOUND) {
4014 brdp->enable = NULL;
4015 brdp->disable = NULL;
4020 retval = pci_register_driver(&stli_pcidriver);
4021 if (retval && found == 0) {
4022 printk(KERN_ERR "Neither isa nor eisa cards found nor pci "
4023 "driver can be registered!\n");
4032 /*****************************************************************************/
4035 * Code to handle an "staliomem" read operation. This device is the
4036 * contents of the board shared memory. It is used for down loading
4037 * the slave image (and debugging :-)
4040 static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp)
4042 unsigned long flags;
4043 void __iomem *memptr;
4044 struct stlibrd *brdp;
4050 brdnr = iminor(fp->f_path.dentry->d_inode);
4051 if (brdnr >= stli_nrbrds)
4053 brdp = stli_brds[brdnr];
4056 if (brdp->state == 0)
4058 if (off >= brdp->memsize || off + count < off)
4061 size = min(count, (size_t)(brdp->memsize - off));
4064 * Copy the data a page at a time
4067 p = (void *)__get_free_page(GFP_KERNEL);
4072 spin_lock_irqsave(&brd_lock, flags);
4074 memptr = EBRDGETMEMPTR(brdp, off);
4075 n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
4076 n = min(n, (int)PAGE_SIZE);
4077 memcpy_fromio(p, memptr, n);
4079 spin_unlock_irqrestore(&brd_lock, flags);
4080 if (copy_to_user(buf, p, n)) {
4090 free_page((unsigned long)p);
4094 /*****************************************************************************/
4097 * Code to handle an "staliomem" write operation. This device is the
4098 * contents of the board shared memory. It is used for down loading
4099 * the slave image (and debugging :-)
4101 * FIXME: copy under lock
4104 static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp)
4106 unsigned long flags;
4107 void __iomem *memptr;
4108 struct stlibrd *brdp;
4115 brdnr = iminor(fp->f_path.dentry->d_inode);
4117 if (brdnr >= stli_nrbrds)
4119 brdp = stli_brds[brdnr];
4122 if (brdp->state == 0)
4124 if (off >= brdp->memsize || off + count < off)
4127 chbuf = (char __user *) buf;
4128 size = min(count, (size_t)(brdp->memsize - off));
4131 * Copy the data a page at a time
4134 p = (void *)__get_free_page(GFP_KERNEL);
4139 n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
4140 n = min(n, (int)PAGE_SIZE);
4141 if (copy_from_user(p, chbuf, n)) {
4146 spin_lock_irqsave(&brd_lock, flags);
4148 memptr = EBRDGETMEMPTR(brdp, off);
4149 memcpy_toio(memptr, p, n);
4151 spin_unlock_irqrestore(&brd_lock, flags);
4157 free_page((unsigned long) p);
4162 /*****************************************************************************/
4165 * Return the board stats structure to user app.
4168 static int stli_getbrdstats(combrd_t __user *bp)
4170 struct stlibrd *brdp;
4173 if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t)))
4175 if (stli_brdstats.brd >= STL_MAXBRDS)
4177 brdp = stli_brds[stli_brdstats.brd];
4181 memset(&stli_brdstats, 0, sizeof(combrd_t));
4182 stli_brdstats.brd = brdp->brdnr;
4183 stli_brdstats.type = brdp->brdtype;
4184 stli_brdstats.hwid = 0;
4185 stli_brdstats.state = brdp->state;
4186 stli_brdstats.ioaddr = brdp->iobase;
4187 stli_brdstats.memaddr = brdp->memaddr;
4188 stli_brdstats.nrpanels = brdp->nrpanels;
4189 stli_brdstats.nrports = brdp->nrports;
4190 for (i = 0; (i < brdp->nrpanels); i++) {
4191 stli_brdstats.panels[i].panel = i;
4192 stli_brdstats.panels[i].hwid = brdp->panelids[i];
4193 stli_brdstats.panels[i].nrports = brdp->panels[i];
4196 if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t)))
4201 /*****************************************************************************/
4204 * Resolve the referenced port number into a port struct pointer.
4207 static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr,
4208 unsigned int portnr)
4210 struct stlibrd *brdp;
4213 if (brdnr >= STL_MAXBRDS)
4215 brdp = stli_brds[brdnr];
4218 for (i = 0; (i < panelnr); i++)
4219 portnr += brdp->panels[i];
4220 if (portnr >= brdp->nrports)
4222 return brdp->ports[portnr];
4225 /*****************************************************************************/
4228 * Return the port stats structure to user app. A NULL port struct
4229 * pointer passed in means that we need to find out from the app
4230 * what port to get stats for (used through board control device).
4233 static int stli_portcmdstats(struct stliport *portp)
4235 unsigned long flags;
4236 struct stlibrd *brdp;
4239 memset(&stli_comstats, 0, sizeof(comstats_t));
4243 brdp = stli_brds[portp->brdnr];
4247 if (brdp->state & BST_STARTED) {
4248 if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS,
4249 &stli_cdkstats, sizeof(asystats_t), 1)) < 0)
4252 memset(&stli_cdkstats, 0, sizeof(asystats_t));
4255 stli_comstats.brd = portp->brdnr;
4256 stli_comstats.panel = portp->panelnr;
4257 stli_comstats.port = portp->portnr;
4258 stli_comstats.state = portp->state;
4259 stli_comstats.flags = portp->flags;
4261 spin_lock_irqsave(&brd_lock, flags);
4262 if (portp->tty != NULL) {
4263 if (portp->tty->driver_data == portp) {
4264 stli_comstats.ttystate = portp->tty->flags;
4265 stli_comstats.rxbuffered = -1;
4266 if (portp->tty->termios != NULL) {
4267 stli_comstats.cflags = portp->tty->termios->c_cflag;
4268 stli_comstats.iflags = portp->tty->termios->c_iflag;
4269 stli_comstats.oflags = portp->tty->termios->c_oflag;
4270 stli_comstats.lflags = portp->tty->termios->c_lflag;
4274 spin_unlock_irqrestore(&brd_lock, flags);
4276 stli_comstats.txtotal = stli_cdkstats.txchars;
4277 stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover;
4278 stli_comstats.txbuffered = stli_cdkstats.txringq;
4279 stli_comstats.rxbuffered += stli_cdkstats.rxringq;
4280 stli_comstats.rxoverrun = stli_cdkstats.overruns;
4281 stli_comstats.rxparity = stli_cdkstats.parity;
4282 stli_comstats.rxframing = stli_cdkstats.framing;
4283 stli_comstats.rxlost = stli_cdkstats.ringover;
4284 stli_comstats.rxbreaks = stli_cdkstats.rxbreaks;
4285 stli_comstats.txbreaks = stli_cdkstats.txbreaks;
4286 stli_comstats.txxon = stli_cdkstats.txstart;
4287 stli_comstats.txxoff = stli_cdkstats.txstop;
4288 stli_comstats.rxxon = stli_cdkstats.rxstart;
4289 stli_comstats.rxxoff = stli_cdkstats.rxstop;
4290 stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2;
4291 stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff;
4292 stli_comstats.modem = stli_cdkstats.dcdcnt;
4293 stli_comstats.hwid = stli_cdkstats.hwid;
4294 stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals);
4299 /*****************************************************************************/
4302 * Return the port stats structure to user app. A NULL port struct
4303 * pointer passed in means that we need to find out from the app
4304 * what port to get stats for (used through board control device).
4307 static int stli_getportstats(struct stliport *portp, comstats_t __user *cp)
4309 struct stlibrd *brdp;
4313 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4315 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4316 stli_comstats.port);
4321 brdp = stli_brds[portp->brdnr];
4325 if ((rc = stli_portcmdstats(portp)) < 0)
4328 return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ?
4332 /*****************************************************************************/
4335 * Clear the port stats structure. We also return it zeroed out...
4338 static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp)
4340 struct stlibrd *brdp;
4344 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4346 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4347 stli_comstats.port);
4352 brdp = stli_brds[portp->brdnr];
4356 if (brdp->state & BST_STARTED) {
4357 if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0)
4361 memset(&stli_comstats, 0, sizeof(comstats_t));
4362 stli_comstats.brd = portp->brdnr;
4363 stli_comstats.panel = portp->panelnr;
4364 stli_comstats.port = portp->portnr;
4366 if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t)))
4371 /*****************************************************************************/
4374 * Return the entire driver ports structure to a user app.
4377 static int stli_getportstruct(struct stliport __user *arg)
4379 struct stliport stli_dummyport;
4380 struct stliport *portp;
4382 if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport)))
4384 portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr,
4385 stli_dummyport.portnr);
4388 if (copy_to_user(arg, portp, sizeof(struct stliport)))
4393 /*****************************************************************************/
4396 * Return the entire driver board structure to a user app.
4399 static int stli_getbrdstruct(struct stlibrd __user *arg)
4401 struct stlibrd stli_dummybrd;
4402 struct stlibrd *brdp;
4404 if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd)))
4406 if (stli_dummybrd.brdnr >= STL_MAXBRDS)
4408 brdp = stli_brds[stli_dummybrd.brdnr];
4411 if (copy_to_user(arg, brdp, sizeof(struct stlibrd)))
4416 /*****************************************************************************/
4419 * The "staliomem" device is also required to do some special operations on
4420 * the board. We need to be able to send an interrupt to the board,
4421 * reset it, and start/stop it.
4424 static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg)
4426 struct stlibrd *brdp;
4427 int brdnr, rc, done;
4428 void __user *argp = (void __user *)arg;
4431 * First up handle the board independent ioctls.
4437 case COM_GETPORTSTATS:
4438 rc = stli_getportstats(NULL, argp);
4441 case COM_CLRPORTSTATS:
4442 rc = stli_clrportstats(NULL, argp);
4445 case COM_GETBRDSTATS:
4446 rc = stli_getbrdstats(argp);
4450 rc = stli_getportstruct(argp);
4454 rc = stli_getbrdstruct(argp);
4463 * Now handle the board specific ioctls. These all depend on the
4464 * minor number of the device they were called from.
4467 if (brdnr >= STL_MAXBRDS)
4469 brdp = stli_brds[brdnr];
4472 if (brdp->state == 0)
4480 rc = stli_startbrd(brdp);
4483 brdp->state &= ~BST_STARTED;
4486 brdp->state &= ~BST_STARTED;
4488 if (stli_shared == 0) {
4489 if (brdp->reenable != NULL)
4490 (* brdp->reenable)(brdp);
4500 static const struct tty_operations stli_ops = {
4502 .close = stli_close,
4503 .write = stli_write,
4504 .put_char = stli_putchar,
4505 .flush_chars = stli_flushchars,
4506 .write_room = stli_writeroom,
4507 .chars_in_buffer = stli_charsinbuffer,
4508 .ioctl = stli_ioctl,
4509 .set_termios = stli_settermios,
4510 .throttle = stli_throttle,
4511 .unthrottle = stli_unthrottle,
4513 .start = stli_start,
4514 .hangup = stli_hangup,
4515 .flush_buffer = stli_flushbuffer,
4516 .break_ctl = stli_breakctl,
4517 .wait_until_sent = stli_waituntilsent,
4518 .send_xchar = stli_sendxchar,
4519 .read_proc = stli_readproc,
4520 .tiocmget = stli_tiocmget,
4521 .tiocmset = stli_tiocmset,
4524 /*****************************************************************************/
4526 * Loadable module initialization stuff.
4529 static void istallion_cleanup_isa(void)
4531 struct stlibrd *brdp;
4534 for (j = 0; (j < stli_nrbrds); j++) {
4535 if ((brdp = stli_brds[j]) == NULL || (brdp->state & BST_PROBED))
4538 stli_cleanup_ports(brdp);
4540 iounmap(brdp->membase);
4541 if (brdp->iosize > 0)
4542 release_region(brdp->iobase, brdp->iosize);
4544 stli_brds[j] = NULL;
4548 static int __init istallion_module_init(void)
4553 printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion);
4555 spin_lock_init(&stli_lock);
4556 spin_lock_init(&brd_lock);
4558 stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL);
4559 if (!stli_txcookbuf) {
4560 printk(KERN_ERR "STALLION: failed to allocate memory "
4561 "(size=%d)\n", STLI_TXBUFSIZE);
4566 stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS);
4572 stli_serial->owner = THIS_MODULE;
4573 stli_serial->driver_name = stli_drvname;
4574 stli_serial->name = stli_serialname;
4575 stli_serial->major = STL_SERIALMAJOR;
4576 stli_serial->minor_start = 0;
4577 stli_serial->type = TTY_DRIVER_TYPE_SERIAL;
4578 stli_serial->subtype = SERIAL_TYPE_NORMAL;
4579 stli_serial->init_termios = stli_deftermios;
4580 stli_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
4581 tty_set_operations(stli_serial, &stli_ops);
4583 retval = tty_register_driver(stli_serial);
4585 printk(KERN_ERR "STALLION: failed to register serial driver\n");
4589 retval = stli_initbrds();
4594 * Set up a character driver for the shared memory region. We need this
4595 * to down load the slave code image. Also it is a useful debugging tool.
4597 retval = register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem);
4599 printk(KERN_ERR "STALLION: failed to register serial memory "
4604 istallion_class = class_create(THIS_MODULE, "staliomem");
4605 for (i = 0; i < 4; i++)
4606 device_create(istallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i),
4611 pci_unregister_driver(&stli_pcidriver);
4612 istallion_cleanup_isa();
4614 tty_unregister_driver(stli_serial);
4616 put_tty_driver(stli_serial);
4618 kfree(stli_txcookbuf);
4623 /*****************************************************************************/
4625 static void __exit istallion_module_exit(void)
4629 printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle,
4634 del_timer_sync(&stli_timerlist);
4637 unregister_chrdev(STL_SIOMEMMAJOR, "staliomem");
4639 for (j = 0; j < 4; j++)
4640 device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, j));
4641 class_destroy(istallion_class);
4643 pci_unregister_driver(&stli_pcidriver);
4644 istallion_cleanup_isa();
4646 tty_unregister_driver(stli_serial);
4647 put_tty_driver(stli_serial);
4649 kfree(stli_txcookbuf);
4652 module_init(istallion_module_init);
4653 module_exit(istallion_module_exit);