1 /*****************************************************************************/
4 * istallion.c -- stallion intelligent multiport serial driver.
6 * Copyright (C) 1996-1999 Stallion Technologies
7 * Copyright (C) 1994-1996 Greg Ungerer.
9 * This code is loosely based on the Linux serial driver, written by
10 * Linus Torvalds, Theodore T'so and others.
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
19 /*****************************************************************************/
21 #include <linux/module.h>
22 #include <linux/slab.h>
23 #include <linux/interrupt.h>
24 #include <linux/tty.h>
25 #include <linux/tty_flip.h>
26 #include <linux/serial.h>
27 #include <linux/cdk.h>
28 #include <linux/comstats.h>
29 #include <linux/istallion.h>
30 #include <linux/ioport.h>
31 #include <linux/delay.h>
32 #include <linux/init.h>
33 #include <linux/device.h>
34 #include <linux/wait.h>
35 #include <linux/eisa.h>
36 #include <linux/ctype.h>
39 #include <asm/uaccess.h>
41 #include <linux/pci.h>
43 /*****************************************************************************/
46 * Define different board types. Not all of the following board types
47 * are supported by this driver. But I will use the standard "assigned"
48 * board numbers. Currently supported boards are abbreviated as:
49 * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and
53 #define BRD_STALLION 1
55 #define BRD_ONBOARD2 3
57 #define BRD_ONBOARDE 7
63 #define BRD_BRUMBY BRD_BRUMBY4
66 * Define a configuration structure to hold the board configuration.
67 * Need to set this up in the code (for now) with the boards that are
68 * to be configured into the system. This is what needs to be modified
69 * when adding/removing/modifying boards. Each line entry in the
70 * stli_brdconf[] array is a board. Each line contains io/irq/memory
71 * ranges for that board (as well as what type of board it is).
73 * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },
74 * This line will configure an EasyConnection 8/64 at io address 2a0,
75 * and shared memory address of cc000. Multiple EasyConnection 8/64
76 * boards can share the same shared memory address space. No interrupt
77 * is required for this board type.
79 * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 },
80 * This line will configure an EasyConnection 8/64 EISA in slot 5 and
81 * shared memory address of 0x80000000 (2 GByte). Multiple
82 * EasyConnection 8/64 EISA boards can share the same shared memory
83 * address space. No interrupt is required for this board type.
85 * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 },
86 * This line will configure an ONboard (ISA type) at io address 240,
87 * and shared memory address of d0000. Multiple ONboards can share
88 * the same shared memory address space. No interrupt required.
90 * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 },
91 * This line will configure a Brumby board (any number of ports!) at
92 * io address 360 and shared memory address of c8000. All Brumby boards
93 * configured into a system must have their own separate io and memory
94 * addresses. No interrupt is required.
96 * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 },
97 * This line will configure an original Stallion board at io address 330
98 * and shared memory address d0000 (this would only be valid for a "V4.0"
99 * or Rev.O Stallion board). All Stallion boards configured into the
100 * system must have their own separate io and memory addresses. No
101 * interrupt is required.
108 unsigned long memaddr;
113 static unsigned int stli_nrbrds;
115 /* stli_lock must NOT be taken holding brd_lock */
116 static spinlock_t stli_lock; /* TTY logic lock */
117 static spinlock_t brd_lock; /* Board logic lock */
120 * There is some experimental EISA board detection code in this driver.
121 * By default it is disabled, but for those that want to try it out,
122 * then set the define below to be 1.
124 #define STLI_EISAPROBE 0
126 /*****************************************************************************/
129 * Define some important driver characteristics. Device major numbers
130 * allocated as per Linux Device Registry.
132 #ifndef STL_SIOMEMMAJOR
133 #define STL_SIOMEMMAJOR 28
135 #ifndef STL_SERIALMAJOR
136 #define STL_SERIALMAJOR 24
138 #ifndef STL_CALLOUTMAJOR
139 #define STL_CALLOUTMAJOR 25
142 /*****************************************************************************/
145 * Define our local driver identity first. Set up stuff to deal with
146 * all the local structures required by a serial tty driver.
148 static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver";
149 static char *stli_drvname = "istallion";
150 static char *stli_drvversion = "5.6.0";
151 static char *stli_serialname = "ttyE";
153 static struct tty_driver *stli_serial;
154 static const struct tty_port_operations stli_port_ops;
156 #define STLI_TXBUFSIZE 4096
159 * Use a fast local buffer for cooked characters. Typically a whole
160 * bunch of cooked characters come in for a port, 1 at a time. So we
161 * save those up into a local buffer, then write out the whole lot
162 * with a large memcpy. Just use 1 buffer for all ports, since its
163 * use it is only need for short periods of time by each port.
165 static char *stli_txcookbuf;
166 static int stli_txcooksize;
167 static int stli_txcookrealsize;
168 static struct tty_struct *stli_txcooktty;
171 * Define a local default termios struct. All ports will be created
172 * with this termios initially. Basically all it defines is a raw port
173 * at 9600 baud, 8 data bits, no parity, 1 stop bit.
175 static struct ktermios stli_deftermios = {
176 .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL),
183 * Define global stats structures. Not used often, and can be
184 * re-used for each stats call.
186 static comstats_t stli_comstats;
187 static combrd_t stli_brdstats;
188 static struct asystats stli_cdkstats;
190 /*****************************************************************************/
192 static DEFINE_MUTEX(stli_brdslock);
193 static struct stlibrd *stli_brds[STL_MAXBRDS];
195 static int stli_shared;
198 * Per board state flags. Used with the state field of the board struct.
199 * Not really much here... All we need to do is keep track of whether
200 * the board has been detected, and whether it is actually running a slave
203 #define BST_FOUND 0x1
204 #define BST_STARTED 0x2
205 #define BST_PROBED 0x4
208 * Define the set of port state flags. These are marked for internal
209 * state purposes only, usually to do with the state of communications
210 * with the slave. Most of them need to be updated atomically, so always
211 * use the bit setting operations (unless protected by cli/sti).
213 #define ST_INITIALIZING 1
219 #define ST_DOFLUSHRX 7
220 #define ST_DOFLUSHTX 8
223 #define ST_GETSIGS 11
226 * Define an array of board names as printable strings. Handy for
227 * referencing boards when printing trace and stuff.
229 static char *stli_brdnames[] = {
262 /*****************************************************************************/
265 * Define some string labels for arguments passed from the module
266 * load line. These allow for easy board definitions, and easy
267 * modification of the io, memory and irq resoucres.
270 static char *board0[8];
271 static char *board1[8];
272 static char *board2[8];
273 static char *board3[8];
275 static char **stli_brdsp[] = {
283 * Define a set of common board names, and types. This is used to
284 * parse any module arguments.
287 static struct stlibrdtype {
291 { "stallion", BRD_STALLION },
292 { "1", BRD_STALLION },
293 { "brumby", BRD_BRUMBY },
294 { "brumby4", BRD_BRUMBY },
295 { "brumby/4", BRD_BRUMBY },
296 { "brumby-4", BRD_BRUMBY },
297 { "brumby8", BRD_BRUMBY },
298 { "brumby/8", BRD_BRUMBY },
299 { "brumby-8", BRD_BRUMBY },
300 { "brumby16", BRD_BRUMBY },
301 { "brumby/16", BRD_BRUMBY },
302 { "brumby-16", BRD_BRUMBY },
304 { "onboard2", BRD_ONBOARD2 },
305 { "onboard-2", BRD_ONBOARD2 },
306 { "onboard/2", BRD_ONBOARD2 },
307 { "onboard-mc", BRD_ONBOARD2 },
308 { "onboard/mc", BRD_ONBOARD2 },
309 { "onboard-mca", BRD_ONBOARD2 },
310 { "onboard/mca", BRD_ONBOARD2 },
311 { "3", BRD_ONBOARD2 },
312 { "onboard", BRD_ONBOARD },
313 { "onboardat", BRD_ONBOARD },
314 { "4", BRD_ONBOARD },
315 { "onboarde", BRD_ONBOARDE },
316 { "onboard-e", BRD_ONBOARDE },
317 { "onboard/e", BRD_ONBOARDE },
318 { "onboard-ei", BRD_ONBOARDE },
319 { "onboard/ei", BRD_ONBOARDE },
320 { "7", BRD_ONBOARDE },
322 { "ecpat", BRD_ECP },
323 { "ec8/64", BRD_ECP },
324 { "ec8/64-at", BRD_ECP },
325 { "ec8/64-isa", BRD_ECP },
327 { "ecpe", BRD_ECPE },
328 { "ecpei", BRD_ECPE },
329 { "ec8/64-e", BRD_ECPE },
330 { "ec8/64-ei", BRD_ECPE },
332 { "ecpmc", BRD_ECPMC },
333 { "ec8/64-mc", BRD_ECPMC },
334 { "ec8/64-mca", BRD_ECPMC },
336 { "ecppci", BRD_ECPPCI },
337 { "ec/ra", BRD_ECPPCI },
338 { "ec/ra-pc", BRD_ECPPCI },
339 { "ec/ra-pci", BRD_ECPPCI },
340 { "29", BRD_ECPPCI },
344 * Define the module agruments.
346 MODULE_AUTHOR("Greg Ungerer");
347 MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver");
348 MODULE_LICENSE("GPL");
351 module_param_array(board0, charp, NULL, 0);
352 MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]");
353 module_param_array(board1, charp, NULL, 0);
354 MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]");
355 module_param_array(board2, charp, NULL, 0);
356 MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]");
357 module_param_array(board3, charp, NULL, 0);
358 MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]");
360 #if STLI_EISAPROBE != 0
362 * Set up a default memory address table for EISA board probing.
363 * The default addresses are all bellow 1Mbyte, which has to be the
364 * case anyway. They should be safe, since we only read values from
365 * them, and interrupts are disabled while we do it. If the higher
366 * memory support is compiled in then we also try probing around
367 * the 1Gb, 2Gb and 3Gb areas as well...
369 static unsigned long stli_eisamemprobeaddrs[] = {
370 0xc0000, 0xd0000, 0xe0000, 0xf0000,
371 0x80000000, 0x80010000, 0x80020000, 0x80030000,
372 0x40000000, 0x40010000, 0x40020000, 0x40030000,
373 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000,
374 0xff000000, 0xff010000, 0xff020000, 0xff030000,
377 static int stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs);
381 * Define the Stallion PCI vendor and device IDs.
383 #ifndef PCI_DEVICE_ID_ECRA
384 #define PCI_DEVICE_ID_ECRA 0x0004
387 static struct pci_device_id istallion_pci_tbl[] = {
388 { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA), },
391 MODULE_DEVICE_TABLE(pci, istallion_pci_tbl);
393 static struct pci_driver stli_pcidriver;
395 /*****************************************************************************/
398 * Hardware configuration info for ECP boards. These defines apply
399 * to the directly accessible io ports of the ECP. There is a set of
400 * defines for each ECP board type, ISA, EISA, MCA and PCI.
404 #define ECP_MEMSIZE (128 * 1024)
405 #define ECP_PCIMEMSIZE (256 * 1024)
407 #define ECP_ATPAGESIZE (4 * 1024)
408 #define ECP_MCPAGESIZE (4 * 1024)
409 #define ECP_EIPAGESIZE (64 * 1024)
410 #define ECP_PCIPAGESIZE (64 * 1024)
412 #define STL_EISAID 0x8c4e
415 * Important defines for the ISA class of ECP board.
418 #define ECP_ATCONFR 1
419 #define ECP_ATMEMAR 2
420 #define ECP_ATMEMPR 3
421 #define ECP_ATSTOP 0x1
422 #define ECP_ATINTENAB 0x10
423 #define ECP_ATENABLE 0x20
424 #define ECP_ATDISABLE 0x00
425 #define ECP_ATADDRMASK 0x3f000
426 #define ECP_ATADDRSHFT 12
429 * Important defines for the EISA class of ECP board.
432 #define ECP_EIMEMARL 1
433 #define ECP_EICONFR 2
434 #define ECP_EIMEMARH 3
435 #define ECP_EIENABLE 0x1
436 #define ECP_EIDISABLE 0x0
437 #define ECP_EISTOP 0x4
438 #define ECP_EIEDGE 0x00
439 #define ECP_EILEVEL 0x80
440 #define ECP_EIADDRMASKL 0x00ff0000
441 #define ECP_EIADDRSHFTL 16
442 #define ECP_EIADDRMASKH 0xff000000
443 #define ECP_EIADDRSHFTH 24
444 #define ECP_EIBRDENAB 0xc84
446 #define ECP_EISAID 0x4
449 * Important defines for the Micro-channel class of ECP board.
450 * (It has a lot in common with the ISA boards.)
453 #define ECP_MCCONFR 1
454 #define ECP_MCSTOP 0x20
455 #define ECP_MCENABLE 0x80
456 #define ECP_MCDISABLE 0x00
459 * Important defines for the PCI class of ECP board.
460 * (It has a lot in common with the other ECP boards.)
462 #define ECP_PCIIREG 0
463 #define ECP_PCICONFR 1
464 #define ECP_PCISTOP 0x01
467 * Hardware configuration info for ONboard and Brumby boards. These
468 * defines apply to the directly accessible io ports of these boards.
470 #define ONB_IOSIZE 16
471 #define ONB_MEMSIZE (64 * 1024)
472 #define ONB_ATPAGESIZE (64 * 1024)
473 #define ONB_MCPAGESIZE (64 * 1024)
474 #define ONB_EIMEMSIZE (128 * 1024)
475 #define ONB_EIPAGESIZE (64 * 1024)
478 * Important defines for the ISA class of ONboard board.
481 #define ONB_ATMEMAR 1
482 #define ONB_ATCONFR 2
483 #define ONB_ATSTOP 0x4
484 #define ONB_ATENABLE 0x01
485 #define ONB_ATDISABLE 0x00
486 #define ONB_ATADDRMASK 0xff0000
487 #define ONB_ATADDRSHFT 16
489 #define ONB_MEMENABLO 0
490 #define ONB_MEMENABHI 0x02
493 * Important defines for the EISA class of ONboard board.
496 #define ONB_EIMEMARL 1
497 #define ONB_EICONFR 2
498 #define ONB_EIMEMARH 3
499 #define ONB_EIENABLE 0x1
500 #define ONB_EIDISABLE 0x0
501 #define ONB_EISTOP 0x4
502 #define ONB_EIEDGE 0x00
503 #define ONB_EILEVEL 0x80
504 #define ONB_EIADDRMASKL 0x00ff0000
505 #define ONB_EIADDRSHFTL 16
506 #define ONB_EIADDRMASKH 0xff000000
507 #define ONB_EIADDRSHFTH 24
508 #define ONB_EIBRDENAB 0xc84
510 #define ONB_EISAID 0x1
513 * Important defines for the Brumby boards. They are pretty simple,
514 * there is not much that is programmably configurable.
516 #define BBY_IOSIZE 16
517 #define BBY_MEMSIZE (64 * 1024)
518 #define BBY_PAGESIZE (16 * 1024)
521 #define BBY_ATCONFR 1
522 #define BBY_ATSTOP 0x4
525 * Important defines for the Stallion boards. They are pretty simple,
526 * there is not much that is programmably configurable.
528 #define STAL_IOSIZE 16
529 #define STAL_MEMSIZE (64 * 1024)
530 #define STAL_PAGESIZE (64 * 1024)
533 * Define the set of status register values for EasyConnection panels.
534 * The signature will return with the status value for each panel. From
535 * this we can determine what is attached to the board - before we have
536 * actually down loaded any code to it.
538 #define ECH_PNLSTATUS 2
539 #define ECH_PNL16PORT 0x20
540 #define ECH_PNLIDMASK 0x07
541 #define ECH_PNLXPID 0x40
542 #define ECH_PNLINTRPEND 0x80
545 * Define some macros to do things to the board. Even those these boards
546 * are somewhat related there is often significantly different ways of
547 * doing some operation on it (like enable, paging, reset, etc). So each
548 * board class has a set of functions which do the commonly required
549 * operations. The macros below basically just call these functions,
550 * generally checking for a NULL function - which means that the board
551 * needs nothing done to it to achieve this operation!
553 #define EBRDINIT(brdp) \
554 if (brdp->init != NULL) \
557 #define EBRDENABLE(brdp) \
558 if (brdp->enable != NULL) \
559 (* brdp->enable)(brdp);
561 #define EBRDDISABLE(brdp) \
562 if (brdp->disable != NULL) \
563 (* brdp->disable)(brdp);
565 #define EBRDINTR(brdp) \
566 if (brdp->intr != NULL) \
567 (* brdp->intr)(brdp);
569 #define EBRDRESET(brdp) \
570 if (brdp->reset != NULL) \
571 (* brdp->reset)(brdp);
573 #define EBRDGETMEMPTR(brdp,offset) \
574 (* brdp->getmemptr)(brdp, offset, __LINE__)
577 * Define the maximal baud rate, and the default baud base for ports.
579 #define STL_MAXBAUD 460800
580 #define STL_BAUDBASE 115200
581 #define STL_CLOSEDELAY (5 * HZ / 10)
583 /*****************************************************************************/
586 * Define macros to extract a brd or port number from a minor number.
588 #define MINOR2BRD(min) (((min) & 0xc0) >> 6)
589 #define MINOR2PORT(min) ((min) & 0x3f)
591 /*****************************************************************************/
594 * Prototype all functions in this driver!
597 static int stli_parsebrd(struct stlconf *confp, char **argp);
598 static int stli_open(struct tty_struct *tty, struct file *filp);
599 static void stli_close(struct tty_struct *tty, struct file *filp);
600 static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count);
601 static int stli_putchar(struct tty_struct *tty, unsigned char ch);
602 static void stli_flushchars(struct tty_struct *tty);
603 static int stli_writeroom(struct tty_struct *tty);
604 static int stli_charsinbuffer(struct tty_struct *tty);
605 static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg);
606 static void stli_settermios(struct tty_struct *tty, struct ktermios *old);
607 static void stli_throttle(struct tty_struct *tty);
608 static void stli_unthrottle(struct tty_struct *tty);
609 static void stli_stop(struct tty_struct *tty);
610 static void stli_start(struct tty_struct *tty);
611 static void stli_flushbuffer(struct tty_struct *tty);
612 static int stli_breakctl(struct tty_struct *tty, int state);
613 static void stli_waituntilsent(struct tty_struct *tty, int timeout);
614 static void stli_sendxchar(struct tty_struct *tty, char ch);
615 static void stli_hangup(struct tty_struct *tty);
616 static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos);
618 static int stli_brdinit(struct stlibrd *brdp);
619 static int stli_startbrd(struct stlibrd *brdp);
620 static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp);
621 static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp);
622 static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg);
623 static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp);
624 static void stli_poll(unsigned long arg);
625 static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp);
626 static int stli_initopen(struct tty_struct *tty, struct stlibrd *brdp, struct stliport *portp);
627 static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
628 static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
629 static int stli_setport(struct tty_struct *tty);
630 static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
631 static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
632 static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
633 static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp);
634 static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp, asyport_t *pp, struct ktermios *tiosp);
635 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts);
636 static long stli_mktiocm(unsigned long sigvalue);
637 static void stli_read(struct stlibrd *brdp, struct stliport *portp);
638 static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp);
639 static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp);
640 static int stli_getbrdstats(combrd_t __user *bp);
641 static int stli_getportstats(struct tty_struct *tty, struct stliport *portp, comstats_t __user *cp);
642 static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp);
643 static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp);
644 static int stli_getportstruct(struct stliport __user *arg);
645 static int stli_getbrdstruct(struct stlibrd __user *arg);
646 static struct stlibrd *stli_allocbrd(void);
648 static void stli_ecpinit(struct stlibrd *brdp);
649 static void stli_ecpenable(struct stlibrd *brdp);
650 static void stli_ecpdisable(struct stlibrd *brdp);
651 static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
652 static void stli_ecpreset(struct stlibrd *brdp);
653 static void stli_ecpintr(struct stlibrd *brdp);
654 static void stli_ecpeiinit(struct stlibrd *brdp);
655 static void stli_ecpeienable(struct stlibrd *brdp);
656 static void stli_ecpeidisable(struct stlibrd *brdp);
657 static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
658 static void stli_ecpeireset(struct stlibrd *brdp);
659 static void stli_ecpmcenable(struct stlibrd *brdp);
660 static void stli_ecpmcdisable(struct stlibrd *brdp);
661 static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
662 static void stli_ecpmcreset(struct stlibrd *brdp);
663 static void stli_ecppciinit(struct stlibrd *brdp);
664 static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
665 static void stli_ecppcireset(struct stlibrd *brdp);
667 static void stli_onbinit(struct stlibrd *brdp);
668 static void stli_onbenable(struct stlibrd *brdp);
669 static void stli_onbdisable(struct stlibrd *brdp);
670 static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
671 static void stli_onbreset(struct stlibrd *brdp);
672 static void stli_onbeinit(struct stlibrd *brdp);
673 static void stli_onbeenable(struct stlibrd *brdp);
674 static void stli_onbedisable(struct stlibrd *brdp);
675 static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
676 static void stli_onbereset(struct stlibrd *brdp);
677 static void stli_bbyinit(struct stlibrd *brdp);
678 static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
679 static void stli_bbyreset(struct stlibrd *brdp);
680 static void stli_stalinit(struct stlibrd *brdp);
681 static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
682 static void stli_stalreset(struct stlibrd *brdp);
684 static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr);
686 static int stli_initecp(struct stlibrd *brdp);
687 static int stli_initonb(struct stlibrd *brdp);
688 #if STLI_EISAPROBE != 0
689 static int stli_eisamemprobe(struct stlibrd *brdp);
691 static int stli_initports(struct stlibrd *brdp);
693 /*****************************************************************************/
696 * Define the driver info for a user level shared memory device. This
697 * device will work sort of like the /dev/kmem device - except that it
698 * will give access to the shared memory on the Stallion intelligent
699 * board. This is also a very useful debugging tool.
701 static const struct file_operations stli_fsiomem = {
702 .owner = THIS_MODULE,
703 .read = stli_memread,
704 .write = stli_memwrite,
705 .ioctl = stli_memioctl,
708 /*****************************************************************************/
711 * Define a timer_list entry for our poll routine. The slave board
712 * is polled every so often to see if anything needs doing. This is
713 * much cheaper on host cpu than using interrupts. It turns out to
714 * not increase character latency by much either...
716 static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0);
718 static int stli_timeron;
721 * Define the calculation for the timeout routine.
723 #define STLI_TIMEOUT (jiffies + 1)
725 /*****************************************************************************/
727 static struct class *istallion_class;
729 static void stli_cleanup_ports(struct stlibrd *brdp)
731 struct stliport *portp;
733 struct tty_struct *tty;
735 for (j = 0; j < STL_MAXPORTS; j++) {
736 portp = brdp->ports[j];
738 tty = tty_port_tty_get(&portp->port);
748 /*****************************************************************************/
751 * Parse the supplied argument string, into the board conf struct.
754 static int stli_parsebrd(struct stlconf *confp, char **argp)
759 if (argp[0] == NULL || *argp[0] == 0)
762 for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++)
765 for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) {
766 if (strcmp(stli_brdstr[i].name, argp[0]) == 0)
769 if (i == ARRAY_SIZE(stli_brdstr)) {
770 printk("STALLION: unknown board name, %s?\n", argp[0]);
774 confp->brdtype = stli_brdstr[i].type;
775 if (argp[1] != NULL && *argp[1] != 0)
776 confp->ioaddr1 = simple_strtoul(argp[1], NULL, 0);
777 if (argp[2] != NULL && *argp[2] != 0)
778 confp->memaddr = simple_strtoul(argp[2], NULL, 0);
782 /*****************************************************************************/
784 static int stli_open(struct tty_struct *tty, struct file *filp)
786 struct stlibrd *brdp;
787 struct stliport *portp;
788 struct tty_port *port;
789 unsigned int minordev, brdnr, portnr;
792 minordev = tty->index;
793 brdnr = MINOR2BRD(minordev);
794 if (brdnr >= stli_nrbrds)
796 brdp = stli_brds[brdnr];
799 if ((brdp->state & BST_STARTED) == 0)
801 portnr = MINOR2PORT(minordev);
802 if (portnr > brdp->nrports)
805 portp = brdp->ports[portnr];
808 if (portp->devnr < 1)
813 * On the first open of the device setup the port hardware, and
814 * initialize the per port data structure. Since initializing the port
815 * requires several commands to the board we will need to wait for any
816 * other open that is already initializing the port.
820 tty_port_tty_set(port, tty);
821 tty->driver_data = portp;
824 wait_event_interruptible(portp->raw_wait,
825 !test_bit(ST_INITIALIZING, &portp->state));
826 if (signal_pending(current))
829 if ((portp->port.flags & ASYNC_INITIALIZED) == 0) {
830 set_bit(ST_INITIALIZING, &portp->state);
831 if ((rc = stli_initopen(tty, brdp, portp)) >= 0) {
833 port->flags |= ASYNC_INITIALIZED;
834 clear_bit(TTY_IO_ERROR, &tty->flags);
836 clear_bit(ST_INITIALIZING, &portp->state);
837 wake_up_interruptible(&portp->raw_wait);
841 return tty_port_block_til_ready(&portp->port, tty, filp);
844 /*****************************************************************************/
846 static void stli_close(struct tty_struct *tty, struct file *filp)
848 struct stlibrd *brdp;
849 struct stliport *portp;
850 struct tty_port *port;
853 portp = tty->driver_data;
858 spin_lock_irqsave(&port->lock, flags);
859 if (tty_hung_up_p(filp)) {
860 spin_unlock_irqrestore(&port->lock, flags);
863 if (tty->count == 1 && port->count != 1)
865 if (port->count-- > 1) {
866 spin_unlock_irqrestore(&port->lock, flags);
870 port->flags |= ASYNC_CLOSING;
872 spin_unlock_irqrestore(&port->lock, flags);
875 * May want to wait for data to drain before closing. The BUSY flag
876 * keeps track of whether we are still transmitting or not. It is
877 * updated by messages from the slave - indicating when all chars
878 * really have drained.
880 spin_lock_irqsave(&stli_lock, flags);
881 if (tty == stli_txcooktty)
882 stli_flushchars(tty);
883 spin_unlock_irqrestore(&stli_lock, flags);
885 if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE)
886 tty_wait_until_sent(tty, portp->closing_wait);
888 /* FIXME: port locking here needs attending to */
889 port->flags &= ~ASYNC_INITIALIZED;
891 brdp = stli_brds[portp->brdnr];
892 stli_rawclose(brdp, portp, 0, 0);
893 if (tty->termios->c_cflag & HUPCL) {
894 stli_mkasysigs(&portp->asig, 0, 0);
895 if (test_bit(ST_CMDING, &portp->state))
896 set_bit(ST_DOSIGS, &portp->state);
898 stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig,
899 sizeof(asysigs_t), 0);
901 clear_bit(ST_TXBUSY, &portp->state);
902 clear_bit(ST_RXSTOP, &portp->state);
903 set_bit(TTY_IO_ERROR, &tty->flags);
904 tty_ldisc_flush(tty);
905 set_bit(ST_DOFLUSHRX, &portp->state);
906 stli_flushbuffer(tty);
909 tty_port_tty_set(&portp->port, NULL);
911 if (port->blocked_open) {
912 if (portp->close_delay)
913 msleep_interruptible(jiffies_to_msecs(portp->close_delay));
914 wake_up_interruptible(&port->open_wait);
917 port->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
918 wake_up_interruptible(&port->close_wait);
921 /*****************************************************************************/
924 * Carry out first open operations on a port. This involves a number of
925 * commands to be sent to the slave. We need to open the port, set the
926 * notification events, set the initial port settings, get and set the
927 * initial signal values. We sleep and wait in between each one. But
928 * this still all happens pretty quickly.
931 static int stli_initopen(struct tty_struct *tty,
932 struct stlibrd *brdp, struct stliport *portp)
938 if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0)
941 memset(&nt, 0, sizeof(asynotify_t));
942 nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK);
944 if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt,
945 sizeof(asynotify_t), 0)) < 0)
948 stli_mkasyport(tty, portp, &aport, tty->termios);
949 if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport,
950 sizeof(asyport_t), 0)) < 0)
953 set_bit(ST_GETSIGS, &portp->state);
954 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig,
955 sizeof(asysigs_t), 1)) < 0)
957 if (test_and_clear_bit(ST_GETSIGS, &portp->state))
958 portp->sigs = stli_mktiocm(portp->asig.sigvalue);
959 stli_mkasysigs(&portp->asig, 1, 1);
960 if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
961 sizeof(asysigs_t), 0)) < 0)
967 /*****************************************************************************/
970 * Send an open message to the slave. This will sleep waiting for the
971 * acknowledgement, so must have user context. We need to co-ordinate
972 * with close events here, since we don't want open and close events
976 static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
978 cdkhdr_t __iomem *hdrp;
979 cdkctrl_t __iomem *cp;
980 unsigned char __iomem *bits;
985 * Send a message to the slave to open this port.
989 * Slave is already closing this port. This can happen if a hangup
990 * occurs on this port. So we must wait until it is complete. The
991 * order of opens and closes may not be preserved across shared
992 * memory, so we must wait until it is complete.
994 wait_event_interruptible(portp->raw_wait,
995 !test_bit(ST_CLOSING, &portp->state));
996 if (signal_pending(current)) {
1001 * Everything is ready now, so write the open message into shared
1002 * memory. Once the message is in set the service bits to say that
1003 * this port wants service.
1005 spin_lock_irqsave(&brd_lock, flags);
1007 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1008 writel(arg, &cp->openarg);
1009 writeb(1, &cp->open);
1010 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1011 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1013 writeb(readb(bits) | portp->portbit, bits);
1017 spin_unlock_irqrestore(&brd_lock, flags);
1022 * Slave is in action, so now we must wait for the open acknowledgment
1026 set_bit(ST_OPENING, &portp->state);
1027 spin_unlock_irqrestore(&brd_lock, flags);
1029 wait_event_interruptible(portp->raw_wait,
1030 !test_bit(ST_OPENING, &portp->state));
1031 if (signal_pending(current))
1034 if ((rc == 0) && (portp->rc != 0))
1039 /*****************************************************************************/
1042 * Send a close message to the slave. Normally this will sleep waiting
1043 * for the acknowledgement, but if wait parameter is 0 it will not. If
1044 * wait is true then must have user context (to sleep).
1047 static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
1049 cdkhdr_t __iomem *hdrp;
1050 cdkctrl_t __iomem *cp;
1051 unsigned char __iomem *bits;
1052 unsigned long flags;
1056 * Slave is already closing this port. This can happen if a hangup
1057 * occurs on this port.
1060 wait_event_interruptible(portp->raw_wait,
1061 !test_bit(ST_CLOSING, &portp->state));
1062 if (signal_pending(current)) {
1063 return -ERESTARTSYS;
1068 * Write the close command into shared memory.
1070 spin_lock_irqsave(&brd_lock, flags);
1072 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1073 writel(arg, &cp->closearg);
1074 writeb(1, &cp->close);
1075 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1076 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1078 writeb(readb(bits) |portp->portbit, bits);
1081 set_bit(ST_CLOSING, &portp->state);
1082 spin_unlock_irqrestore(&brd_lock, flags);
1088 * Slave is in action, so now we must wait for the open acknowledgment
1092 wait_event_interruptible(portp->raw_wait,
1093 !test_bit(ST_CLOSING, &portp->state));
1094 if (signal_pending(current))
1097 if ((rc == 0) && (portp->rc != 0))
1102 /*****************************************************************************/
1105 * Send a command to the slave and wait for the response. This must
1106 * have user context (it sleeps). This routine is generic in that it
1107 * can send any type of command. Its purpose is to wait for that command
1108 * to complete (as opposed to initiating the command then returning).
1111 static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
1113 wait_event_interruptible(portp->raw_wait,
1114 !test_bit(ST_CMDING, &portp->state));
1115 if (signal_pending(current))
1116 return -ERESTARTSYS;
1118 stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
1120 wait_event_interruptible(portp->raw_wait,
1121 !test_bit(ST_CMDING, &portp->state));
1122 if (signal_pending(current))
1123 return -ERESTARTSYS;
1130 /*****************************************************************************/
1133 * Send the termios settings for this port to the slave. This sleeps
1134 * waiting for the command to complete - so must have user context.
1137 static int stli_setport(struct tty_struct *tty)
1139 struct stliport *portp = tty->driver_data;
1140 struct stlibrd *brdp;
1145 if (portp->brdnr >= stli_nrbrds)
1147 brdp = stli_brds[portp->brdnr];
1151 stli_mkasyport(tty, portp, &aport, tty->termios);
1152 return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0));
1155 /*****************************************************************************/
1157 static int stli_carrier_raised(struct tty_port *port)
1159 struct stliport *portp = container_of(port, struct stliport, port);
1160 return (portp->sigs & TIOCM_CD) ? 1 : 0;
1163 static void stli_raise_dtr_rts(struct tty_port *port)
1165 struct stliport *portp = container_of(port, struct stliport, port);
1166 struct stlibrd *brdp = stli_brds[portp->brdnr];
1167 stli_mkasysigs(&portp->asig, 1, 1);
1168 if (stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1169 sizeof(asysigs_t), 0) < 0)
1170 printk(KERN_WARNING "istallion: dtr raise failed.\n");
1174 /*****************************************************************************/
1177 * Write routine. Take the data and put it in the shared memory ring
1178 * queue. If port is not already sending chars then need to mark the
1179 * service bits for this port.
1182 static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count)
1184 cdkasy_t __iomem *ap;
1185 cdkhdr_t __iomem *hdrp;
1186 unsigned char __iomem *bits;
1187 unsigned char __iomem *shbuf;
1188 unsigned char *chbuf;
1189 struct stliport *portp;
1190 struct stlibrd *brdp;
1191 unsigned int len, stlen, head, tail, size;
1192 unsigned long flags;
1194 if (tty == stli_txcooktty)
1195 stli_flushchars(tty);
1196 portp = tty->driver_data;
1199 if (portp->brdnr >= stli_nrbrds)
1201 brdp = stli_brds[portp->brdnr];
1204 chbuf = (unsigned char *) buf;
1207 * All data is now local, shove as much as possible into shared memory.
1209 spin_lock_irqsave(&brd_lock, flags);
1211 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1212 head = (unsigned int) readw(&ap->txq.head);
1213 tail = (unsigned int) readw(&ap->txq.tail);
1214 if (tail != ((unsigned int) readw(&ap->txq.tail)))
1215 tail = (unsigned int) readw(&ap->txq.tail);
1216 size = portp->txsize;
1218 len = size - (head - tail) - 1;
1219 stlen = size - head;
1221 len = tail - head - 1;
1225 len = min(len, (unsigned int)count);
1227 shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset);
1230 stlen = min(len, stlen);
1231 memcpy_toio(shbuf + head, chbuf, stlen);
1242 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1243 writew(head, &ap->txq.head);
1244 if (test_bit(ST_TXBUSY, &portp->state)) {
1245 if (readl(&ap->changed.data) & DT_TXEMPTY)
1246 writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
1248 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1249 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1251 writeb(readb(bits) | portp->portbit, bits);
1252 set_bit(ST_TXBUSY, &portp->state);
1254 spin_unlock_irqrestore(&brd_lock, flags);
1259 /*****************************************************************************/
1262 * Output a single character. We put it into a temporary local buffer
1263 * (for speed) then write out that buffer when the flushchars routine
1264 * is called. There is a safety catch here so that if some other port
1265 * writes chars before the current buffer has been, then we write them
1266 * first them do the new ports.
1269 static int stli_putchar(struct tty_struct *tty, unsigned char ch)
1271 if (tty != stli_txcooktty) {
1272 if (stli_txcooktty != NULL)
1273 stli_flushchars(stli_txcooktty);
1274 stli_txcooktty = tty;
1277 stli_txcookbuf[stli_txcooksize++] = ch;
1281 /*****************************************************************************/
1284 * Transfer characters from the local TX cooking buffer to the board.
1285 * We sort of ignore the tty that gets passed in here. We rely on the
1286 * info stored with the TX cook buffer to tell us which port to flush
1287 * the data on. In any case we clean out the TX cook buffer, for re-use
1291 static void stli_flushchars(struct tty_struct *tty)
1293 cdkhdr_t __iomem *hdrp;
1294 unsigned char __iomem *bits;
1295 cdkasy_t __iomem *ap;
1296 struct tty_struct *cooktty;
1297 struct stliport *portp;
1298 struct stlibrd *brdp;
1299 unsigned int len, stlen, head, tail, size, count, cooksize;
1301 unsigned char __iomem *shbuf;
1302 unsigned long flags;
1304 cooksize = stli_txcooksize;
1305 cooktty = stli_txcooktty;
1306 stli_txcooksize = 0;
1307 stli_txcookrealsize = 0;
1308 stli_txcooktty = NULL;
1310 if (cooktty == NULL)
1317 portp = tty->driver_data;
1320 if (portp->brdnr >= stli_nrbrds)
1322 brdp = stli_brds[portp->brdnr];
1326 spin_lock_irqsave(&brd_lock, flags);
1329 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1330 head = (unsigned int) readw(&ap->txq.head);
1331 tail = (unsigned int) readw(&ap->txq.tail);
1332 if (tail != ((unsigned int) readw(&ap->txq.tail)))
1333 tail = (unsigned int) readw(&ap->txq.tail);
1334 size = portp->txsize;
1336 len = size - (head - tail) - 1;
1337 stlen = size - head;
1339 len = tail - head - 1;
1343 len = min(len, cooksize);
1345 shbuf = EBRDGETMEMPTR(brdp, portp->txoffset);
1346 buf = stli_txcookbuf;
1349 stlen = min(len, stlen);
1350 memcpy_toio(shbuf + head, buf, stlen);
1361 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1362 writew(head, &ap->txq.head);
1364 if (test_bit(ST_TXBUSY, &portp->state)) {
1365 if (readl(&ap->changed.data) & DT_TXEMPTY)
1366 writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
1368 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1369 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1371 writeb(readb(bits) | portp->portbit, bits);
1372 set_bit(ST_TXBUSY, &portp->state);
1375 spin_unlock_irqrestore(&brd_lock, flags);
1378 /*****************************************************************************/
1380 static int stli_writeroom(struct tty_struct *tty)
1382 cdkasyrq_t __iomem *rp;
1383 struct stliport *portp;
1384 struct stlibrd *brdp;
1385 unsigned int head, tail, len;
1386 unsigned long flags;
1388 if (tty == stli_txcooktty) {
1389 if (stli_txcookrealsize != 0) {
1390 len = stli_txcookrealsize - stli_txcooksize;
1395 portp = tty->driver_data;
1398 if (portp->brdnr >= stli_nrbrds)
1400 brdp = stli_brds[portp->brdnr];
1404 spin_lock_irqsave(&brd_lock, flags);
1406 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1407 head = (unsigned int) readw(&rp->head);
1408 tail = (unsigned int) readw(&rp->tail);
1409 if (tail != ((unsigned int) readw(&rp->tail)))
1410 tail = (unsigned int) readw(&rp->tail);
1411 len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head);
1414 spin_unlock_irqrestore(&brd_lock, flags);
1416 if (tty == stli_txcooktty) {
1417 stli_txcookrealsize = len;
1418 len -= stli_txcooksize;
1423 /*****************************************************************************/
1426 * Return the number of characters in the transmit buffer. Normally we
1427 * will return the number of chars in the shared memory ring queue.
1428 * We need to kludge around the case where the shared memory buffer is
1429 * empty but not all characters have drained yet, for this case just
1430 * return that there is 1 character in the buffer!
1433 static int stli_charsinbuffer(struct tty_struct *tty)
1435 cdkasyrq_t __iomem *rp;
1436 struct stliport *portp;
1437 struct stlibrd *brdp;
1438 unsigned int head, tail, len;
1439 unsigned long flags;
1441 if (tty == stli_txcooktty)
1442 stli_flushchars(tty);
1443 portp = tty->driver_data;
1446 if (portp->brdnr >= stli_nrbrds)
1448 brdp = stli_brds[portp->brdnr];
1452 spin_lock_irqsave(&brd_lock, flags);
1454 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1455 head = (unsigned int) readw(&rp->head);
1456 tail = (unsigned int) readw(&rp->tail);
1457 if (tail != ((unsigned int) readw(&rp->tail)))
1458 tail = (unsigned int) readw(&rp->tail);
1459 len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head));
1460 if ((len == 0) && test_bit(ST_TXBUSY, &portp->state))
1463 spin_unlock_irqrestore(&brd_lock, flags);
1468 /*****************************************************************************/
1471 * Generate the serial struct info.
1474 static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp)
1476 struct serial_struct sio;
1477 struct stlibrd *brdp;
1479 memset(&sio, 0, sizeof(struct serial_struct));
1480 sio.type = PORT_UNKNOWN;
1481 sio.line = portp->portnr;
1483 sio.flags = portp->port.flags;
1484 sio.baud_base = portp->baud_base;
1485 sio.close_delay = portp->close_delay;
1486 sio.closing_wait = portp->closing_wait;
1487 sio.custom_divisor = portp->custom_divisor;
1488 sio.xmit_fifo_size = 0;
1491 brdp = stli_brds[portp->brdnr];
1493 sio.port = brdp->iobase;
1495 return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ?
1499 /*****************************************************************************/
1502 * Set port according to the serial struct info.
1503 * At this point we do not do any auto-configure stuff, so we will
1504 * just quietly ignore any requests to change irq, etc.
1507 static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp)
1509 struct serial_struct sio;
1511 struct stliport *portp = tty->driver_data;
1513 if (copy_from_user(&sio, sp, sizeof(struct serial_struct)))
1515 if (!capable(CAP_SYS_ADMIN)) {
1516 if ((sio.baud_base != portp->baud_base) ||
1517 (sio.close_delay != portp->close_delay) ||
1518 ((sio.flags & ~ASYNC_USR_MASK) !=
1519 (portp->port.flags & ~ASYNC_USR_MASK)))
1523 portp->port.flags = (portp->port.flags & ~ASYNC_USR_MASK) |
1524 (sio.flags & ASYNC_USR_MASK);
1525 portp->baud_base = sio.baud_base;
1526 portp->close_delay = sio.close_delay;
1527 portp->closing_wait = sio.closing_wait;
1528 portp->custom_divisor = sio.custom_divisor;
1530 if ((rc = stli_setport(tty)) < 0)
1535 /*****************************************************************************/
1537 static int stli_tiocmget(struct tty_struct *tty, struct file *file)
1539 struct stliport *portp = tty->driver_data;
1540 struct stlibrd *brdp;
1545 if (portp->brdnr >= stli_nrbrds)
1547 brdp = stli_brds[portp->brdnr];
1550 if (tty->flags & (1 << TTY_IO_ERROR))
1553 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS,
1554 &portp->asig, sizeof(asysigs_t), 1)) < 0)
1557 return stli_mktiocm(portp->asig.sigvalue);
1560 static int stli_tiocmset(struct tty_struct *tty, struct file *file,
1561 unsigned int set, unsigned int clear)
1563 struct stliport *portp = tty->driver_data;
1564 struct stlibrd *brdp;
1565 int rts = -1, dtr = -1;
1569 if (portp->brdnr >= stli_nrbrds)
1571 brdp = stli_brds[portp->brdnr];
1574 if (tty->flags & (1 << TTY_IO_ERROR))
1577 if (set & TIOCM_RTS)
1579 if (set & TIOCM_DTR)
1581 if (clear & TIOCM_RTS)
1583 if (clear & TIOCM_DTR)
1586 stli_mkasysigs(&portp->asig, dtr, rts);
1588 return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1589 sizeof(asysigs_t), 0);
1592 static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg)
1594 struct stliport *portp;
1595 struct stlibrd *brdp;
1597 void __user *argp = (void __user *)arg;
1599 portp = tty->driver_data;
1602 if (portp->brdnr >= stli_nrbrds)
1604 brdp = stli_brds[portp->brdnr];
1608 if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
1609 (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) {
1610 if (tty->flags & (1 << TTY_IO_ERROR))
1618 rc = stli_getserial(portp, argp);
1621 rc = stli_setserial(tty, argp);
1624 rc = put_user(portp->pflag, (unsigned __user *)argp);
1627 if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0)
1630 case COM_GETPORTSTATS:
1631 rc = stli_getportstats(tty, portp, argp);
1633 case COM_CLRPORTSTATS:
1634 rc = stli_clrportstats(portp, argp);
1640 case TIOCSERGSTRUCT:
1641 case TIOCSERGETMULTI:
1642 case TIOCSERSETMULTI:
1651 /*****************************************************************************/
1654 * This routine assumes that we have user context and can sleep.
1655 * Looks like it is true for the current ttys implementation..!!
1658 static void stli_settermios(struct tty_struct *tty, struct ktermios *old)
1660 struct stliport *portp;
1661 struct stlibrd *brdp;
1662 struct ktermios *tiosp;
1665 portp = tty->driver_data;
1668 if (portp->brdnr >= stli_nrbrds)
1670 brdp = stli_brds[portp->brdnr];
1674 tiosp = tty->termios;
1676 stli_mkasyport(tty, portp, &aport, tiosp);
1677 stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0);
1678 stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1);
1679 stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1680 sizeof(asysigs_t), 0);
1681 if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0))
1682 tty->hw_stopped = 0;
1683 if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL))
1684 wake_up_interruptible(&portp->port.open_wait);
1687 /*****************************************************************************/
1690 * Attempt to flow control who ever is sending us data. We won't really
1691 * do any flow control action here. We can't directly, and even if we
1692 * wanted to we would have to send a command to the slave. The slave
1693 * knows how to flow control, and will do so when its buffers reach its
1694 * internal high water marks. So what we will do is set a local state
1695 * bit that will stop us sending any RX data up from the poll routine
1696 * (which is the place where RX data from the slave is handled).
1699 static void stli_throttle(struct tty_struct *tty)
1701 struct stliport *portp = tty->driver_data;
1704 set_bit(ST_RXSTOP, &portp->state);
1707 /*****************************************************************************/
1710 * Unflow control the device sending us data... That means that all
1711 * we have to do is clear the RXSTOP state bit. The next poll call
1712 * will then be able to pass the RX data back up.
1715 static void stli_unthrottle(struct tty_struct *tty)
1717 struct stliport *portp = tty->driver_data;
1720 clear_bit(ST_RXSTOP, &portp->state);
1723 /*****************************************************************************/
1726 * Stop the transmitter.
1729 static void stli_stop(struct tty_struct *tty)
1733 /*****************************************************************************/
1736 * Start the transmitter again.
1739 static void stli_start(struct tty_struct *tty)
1743 /*****************************************************************************/
1746 * Hangup this port. This is pretty much like closing the port, only
1747 * a little more brutal. No waiting for data to drain. Shutdown the
1748 * port and maybe drop signals. This is rather tricky really. We want
1749 * to close the port as well.
1752 static void stli_hangup(struct tty_struct *tty)
1754 struct stliport *portp;
1755 struct stlibrd *brdp;
1756 struct tty_port *port;
1757 unsigned long flags;
1759 portp = tty->driver_data;
1762 if (portp->brdnr >= stli_nrbrds)
1764 brdp = stli_brds[portp->brdnr];
1767 port = &portp->port;
1769 spin_lock_irqsave(&port->lock, flags);
1770 port->flags &= ~ASYNC_INITIALIZED;
1771 spin_unlock_irqrestore(&port->lock, flags);
1773 if (!test_bit(ST_CLOSING, &portp->state))
1774 stli_rawclose(brdp, portp, 0, 0);
1776 spin_lock_irqsave(&stli_lock, flags);
1777 if (tty->termios->c_cflag & HUPCL) {
1778 stli_mkasysigs(&portp->asig, 0, 0);
1779 if (test_bit(ST_CMDING, &portp->state)) {
1780 set_bit(ST_DOSIGS, &portp->state);
1781 set_bit(ST_DOFLUSHTX, &portp->state);
1782 set_bit(ST_DOFLUSHRX, &portp->state);
1784 stli_sendcmd(brdp, portp, A_SETSIGNALSF,
1785 &portp->asig, sizeof(asysigs_t), 0);
1789 clear_bit(ST_TXBUSY, &portp->state);
1790 clear_bit(ST_RXSTOP, &portp->state);
1791 set_bit(TTY_IO_ERROR, &tty->flags);
1792 spin_unlock_irqrestore(&stli_lock, flags);
1794 tty_port_hangup(port);
1797 /*****************************************************************************/
1800 * Flush characters from the lower buffer. We may not have user context
1801 * so we cannot sleep waiting for it to complete. Also we need to check
1802 * if there is chars for this port in the TX cook buffer, and flush them
1806 static void stli_flushbuffer(struct tty_struct *tty)
1808 struct stliport *portp;
1809 struct stlibrd *brdp;
1810 unsigned long ftype, flags;
1812 portp = tty->driver_data;
1815 if (portp->brdnr >= stli_nrbrds)
1817 brdp = stli_brds[portp->brdnr];
1821 spin_lock_irqsave(&brd_lock, flags);
1822 if (tty == stli_txcooktty) {
1823 stli_txcooktty = NULL;
1824 stli_txcooksize = 0;
1825 stli_txcookrealsize = 0;
1827 if (test_bit(ST_CMDING, &portp->state)) {
1828 set_bit(ST_DOFLUSHTX, &portp->state);
1831 if (test_bit(ST_DOFLUSHRX, &portp->state)) {
1833 clear_bit(ST_DOFLUSHRX, &portp->state);
1835 __stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0);
1837 spin_unlock_irqrestore(&brd_lock, flags);
1841 /*****************************************************************************/
1843 static int stli_breakctl(struct tty_struct *tty, int state)
1845 struct stlibrd *brdp;
1846 struct stliport *portp;
1849 portp = tty->driver_data;
1852 if (portp->brdnr >= stli_nrbrds)
1854 brdp = stli_brds[portp->brdnr];
1858 arg = (state == -1) ? BREAKON : BREAKOFF;
1859 stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0);
1863 /*****************************************************************************/
1865 static void stli_waituntilsent(struct tty_struct *tty, int timeout)
1867 struct stliport *portp;
1870 portp = tty->driver_data;
1876 tend = jiffies + timeout;
1878 while (test_bit(ST_TXBUSY, &portp->state)) {
1879 if (signal_pending(current))
1881 msleep_interruptible(20);
1882 if (time_after_eq(jiffies, tend))
1887 /*****************************************************************************/
1889 static void stli_sendxchar(struct tty_struct *tty, char ch)
1891 struct stlibrd *brdp;
1892 struct stliport *portp;
1895 portp = tty->driver_data;
1898 if (portp->brdnr >= stli_nrbrds)
1900 brdp = stli_brds[portp->brdnr];
1904 memset(&actrl, 0, sizeof(asyctrl_t));
1905 if (ch == STOP_CHAR(tty)) {
1906 actrl.rxctrl = CT_STOPFLOW;
1907 } else if (ch == START_CHAR(tty)) {
1908 actrl.rxctrl = CT_STARTFLOW;
1910 actrl.txctrl = CT_SENDCHR;
1913 stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
1916 /*****************************************************************************/
1921 * Format info for a specified port. The line is deliberately limited
1922 * to 80 characters. (If it is too long it will be truncated, if too
1923 * short then padded with spaces).
1926 static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos)
1931 rc = stli_portcmdstats(NULL, portp);
1934 if (brdp->state & BST_STARTED) {
1935 switch (stli_comstats.hwid) {
1936 case 0: uart = "2681"; break;
1937 case 1: uart = "SC26198"; break;
1938 default:uart = "CD1400"; break;
1943 sp += sprintf(sp, "%d: uart:%s ", portnr, uart);
1945 if ((brdp->state & BST_STARTED) && (rc >= 0)) {
1946 sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal,
1947 (int) stli_comstats.rxtotal);
1949 if (stli_comstats.rxframing)
1950 sp += sprintf(sp, " fe:%d",
1951 (int) stli_comstats.rxframing);
1952 if (stli_comstats.rxparity)
1953 sp += sprintf(sp, " pe:%d",
1954 (int) stli_comstats.rxparity);
1955 if (stli_comstats.rxbreaks)
1956 sp += sprintf(sp, " brk:%d",
1957 (int) stli_comstats.rxbreaks);
1958 if (stli_comstats.rxoverrun)
1959 sp += sprintf(sp, " oe:%d",
1960 (int) stli_comstats.rxoverrun);
1962 cnt = sprintf(sp, "%s%s%s%s%s ",
1963 (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "",
1964 (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "",
1965 (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "",
1966 (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "",
1967 (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : "");
1972 for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++)
1975 pos[(MAXLINE - 2)] = '+';
1976 pos[(MAXLINE - 1)] = '\n';
1981 /*****************************************************************************/
1984 * Port info, read from the /proc file system.
1987 static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data)
1989 struct stlibrd *brdp;
1990 struct stliport *portp;
1991 unsigned int brdnr, portnr, totalport;
2000 pos += sprintf(pos, "%s: version %s", stli_drvtitle,
2002 while (pos < (page + MAXLINE - 1))
2009 * We scan through for each board, panel and port. The offset is
2010 * calculated on the fly, and irrelevant ports are skipped.
2012 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
2013 brdp = stli_brds[brdnr];
2016 if (brdp->state == 0)
2019 maxoff = curoff + (brdp->nrports * MAXLINE);
2020 if (off >= maxoff) {
2025 totalport = brdnr * STL_MAXPORTS;
2026 for (portnr = 0; (portnr < brdp->nrports); portnr++,
2028 portp = brdp->ports[portnr];
2031 if (off >= (curoff += MAXLINE))
2033 if ((pos - page + MAXLINE) > count)
2035 pos += stli_portinfo(brdp, portp, totalport, pos);
2046 /*****************************************************************************/
2049 * Generic send command routine. This will send a message to the slave,
2050 * of the specified type with the specified argument. Must be very
2051 * careful of data that will be copied out from shared memory -
2052 * containing command results. The command completion is all done from
2053 * a poll routine that does not have user context. Therefore you cannot
2054 * copy back directly into user space, or to the kernel stack of a
2055 * process. This routine does not sleep, so can be called from anywhere.
2057 * The caller must hold the brd_lock (see also stli_sendcmd the usual
2061 static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
2063 cdkhdr_t __iomem *hdrp;
2064 cdkctrl_t __iomem *cp;
2065 unsigned char __iomem *bits;
2067 if (test_bit(ST_CMDING, &portp->state)) {
2068 printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n",
2074 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
2076 memcpy_toio((void __iomem *) &(cp->args[0]), arg, size);
2079 portp->argsize = size;
2082 writel(0, &cp->status);
2083 writel(cmd, &cp->cmd);
2084 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2085 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
2087 writeb(readb(bits) | portp->portbit, bits);
2088 set_bit(ST_CMDING, &portp->state);
2092 static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
2094 unsigned long flags;
2096 spin_lock_irqsave(&brd_lock, flags);
2097 __stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
2098 spin_unlock_irqrestore(&brd_lock, flags);
2101 /*****************************************************************************/
2104 * Read data from shared memory. This assumes that the shared memory
2105 * is enabled and that interrupts are off. Basically we just empty out
2106 * the shared memory buffer into the tty buffer. Must be careful to
2107 * handle the case where we fill up the tty buffer, but still have
2108 * more chars to unload.
2111 static void stli_read(struct stlibrd *brdp, struct stliport *portp)
2113 cdkasyrq_t __iomem *rp;
2114 char __iomem *shbuf;
2115 struct tty_struct *tty;
2116 unsigned int head, tail, size;
2117 unsigned int len, stlen;
2119 if (test_bit(ST_RXSTOP, &portp->state))
2121 tty = tty_port_tty_get(&portp->port);
2125 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2126 head = (unsigned int) readw(&rp->head);
2127 if (head != ((unsigned int) readw(&rp->head)))
2128 head = (unsigned int) readw(&rp->head);
2129 tail = (unsigned int) readw(&rp->tail);
2130 size = portp->rxsize;
2135 len = size - (tail - head);
2136 stlen = size - tail;
2139 len = tty_buffer_request_room(tty, len);
2141 shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset);
2144 unsigned char *cptr;
2146 stlen = min(len, stlen);
2147 tty_prepare_flip_string(tty, &cptr, stlen);
2148 memcpy_fromio(cptr, shbuf + tail, stlen);
2156 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2157 writew(tail, &rp->tail);
2160 set_bit(ST_RXING, &portp->state);
2162 tty_schedule_flip(tty);
2166 /*****************************************************************************/
2169 * Set up and carry out any delayed commands. There is only a small set
2170 * of slave commands that can be done "off-level". So it is not too
2171 * difficult to deal with them here.
2174 static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp)
2178 if (test_bit(ST_DOSIGS, &portp->state)) {
2179 if (test_bit(ST_DOFLUSHTX, &portp->state) &&
2180 test_bit(ST_DOFLUSHRX, &portp->state))
2181 cmd = A_SETSIGNALSF;
2182 else if (test_bit(ST_DOFLUSHTX, &portp->state))
2183 cmd = A_SETSIGNALSFTX;
2184 else if (test_bit(ST_DOFLUSHRX, &portp->state))
2185 cmd = A_SETSIGNALSFRX;
2188 clear_bit(ST_DOFLUSHTX, &portp->state);
2189 clear_bit(ST_DOFLUSHRX, &portp->state);
2190 clear_bit(ST_DOSIGS, &portp->state);
2191 memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig,
2193 writel(0, &cp->status);
2194 writel(cmd, &cp->cmd);
2195 set_bit(ST_CMDING, &portp->state);
2196 } else if (test_bit(ST_DOFLUSHTX, &portp->state) ||
2197 test_bit(ST_DOFLUSHRX, &portp->state)) {
2198 cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0);
2199 cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0);
2200 clear_bit(ST_DOFLUSHTX, &portp->state);
2201 clear_bit(ST_DOFLUSHRX, &portp->state);
2202 memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int));
2203 writel(0, &cp->status);
2204 writel(A_FLUSH, &cp->cmd);
2205 set_bit(ST_CMDING, &portp->state);
2209 /*****************************************************************************/
2212 * Host command service checking. This handles commands or messages
2213 * coming from the slave to the host. Must have board shared memory
2214 * enabled and interrupts off when called. Notice that by servicing the
2215 * read data last we don't need to change the shared memory pointer
2216 * during processing (which is a slow IO operation).
2217 * Return value indicates if this port is still awaiting actions from
2218 * the slave (like open, command, or even TX data being sent). If 0
2219 * then port is still busy, otherwise no longer busy.
2222 static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp)
2224 cdkasy_t __iomem *ap;
2225 cdkctrl_t __iomem *cp;
2226 struct tty_struct *tty;
2228 unsigned long oldsigs;
2231 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
2235 * Check if we are waiting for an open completion message.
2237 if (test_bit(ST_OPENING, &portp->state)) {
2238 rc = readl(&cp->openarg);
2239 if (readb(&cp->open) == 0 && rc != 0) {
2242 writel(0, &cp->openarg);
2244 clear_bit(ST_OPENING, &portp->state);
2245 wake_up_interruptible(&portp->raw_wait);
2250 * Check if we are waiting for a close completion message.
2252 if (test_bit(ST_CLOSING, &portp->state)) {
2253 rc = (int) readl(&cp->closearg);
2254 if (readb(&cp->close) == 0 && rc != 0) {
2257 writel(0, &cp->closearg);
2259 clear_bit(ST_CLOSING, &portp->state);
2260 wake_up_interruptible(&portp->raw_wait);
2265 * Check if we are waiting for a command completion message. We may
2266 * need to copy out the command results associated with this command.
2268 if (test_bit(ST_CMDING, &portp->state)) {
2269 rc = readl(&cp->status);
2270 if (readl(&cp->cmd) == 0 && rc != 0) {
2273 if (portp->argp != NULL) {
2274 memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]),
2278 writel(0, &cp->status);
2280 clear_bit(ST_CMDING, &portp->state);
2281 stli_dodelaycmd(portp, cp);
2282 wake_up_interruptible(&portp->raw_wait);
2287 * Check for any notification messages ready. This includes lots of
2288 * different types of events - RX chars ready, RX break received,
2289 * TX data low or empty in the slave, modem signals changed state.
2296 tty = tty_port_tty_get(&portp->port);
2298 if (nt.signal & SG_DCD) {
2299 oldsigs = portp->sigs;
2300 portp->sigs = stli_mktiocm(nt.sigvalue);
2301 clear_bit(ST_GETSIGS, &portp->state);
2302 if ((portp->sigs & TIOCM_CD) &&
2303 ((oldsigs & TIOCM_CD) == 0))
2304 wake_up_interruptible(&portp->port.open_wait);
2305 if ((oldsigs & TIOCM_CD) &&
2306 ((portp->sigs & TIOCM_CD) == 0)) {
2307 if (portp->port.flags & ASYNC_CHECK_CD) {
2314 if (nt.data & DT_TXEMPTY)
2315 clear_bit(ST_TXBUSY, &portp->state);
2316 if (nt.data & (DT_TXEMPTY | DT_TXLOW)) {
2323 if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) {
2325 tty_insert_flip_char(tty, 0, TTY_BREAK);
2326 if (portp->port.flags & ASYNC_SAK) {
2330 tty_schedule_flip(tty);
2335 if (nt.data & DT_RXBUSY) {
2337 stli_read(brdp, portp);
2342 * It might seem odd that we are checking for more RX chars here.
2343 * But, we need to handle the case where the tty buffer was previously
2344 * filled, but we had more characters to pass up. The slave will not
2345 * send any more RX notify messages until the RX buffer has been emptied.
2346 * But it will leave the service bits on (since the buffer is not empty).
2347 * So from here we can try to process more RX chars.
2349 if ((!donerx) && test_bit(ST_RXING, &portp->state)) {
2350 clear_bit(ST_RXING, &portp->state);
2351 stli_read(brdp, portp);
2354 return((test_bit(ST_OPENING, &portp->state) ||
2355 test_bit(ST_CLOSING, &portp->state) ||
2356 test_bit(ST_CMDING, &portp->state) ||
2357 test_bit(ST_TXBUSY, &portp->state) ||
2358 test_bit(ST_RXING, &portp->state)) ? 0 : 1);
2361 /*****************************************************************************/
2364 * Service all ports on a particular board. Assumes that the boards
2365 * shared memory is enabled, and that the page pointer is pointed
2366 * at the cdk header structure.
2369 static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp)
2371 struct stliport *portp;
2372 unsigned char hostbits[(STL_MAXCHANS / 8) + 1];
2373 unsigned char slavebits[(STL_MAXCHANS / 8) + 1];
2374 unsigned char __iomem *slavep;
2375 int bitpos, bitat, bitsize;
2376 int channr, nrdevs, slavebitchange;
2378 bitsize = brdp->bitsize;
2379 nrdevs = brdp->nrdevs;
2382 * Check if slave wants any service. Basically we try to do as
2383 * little work as possible here. There are 2 levels of service
2384 * bits. So if there is nothing to do we bail early. We check
2385 * 8 service bits at a time in the inner loop, so we can bypass
2386 * the lot if none of them want service.
2388 memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset),
2391 memset(&slavebits[0], 0, bitsize);
2394 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2395 if (hostbits[bitpos] == 0)
2397 channr = bitpos * 8;
2398 for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) {
2399 if (hostbits[bitpos] & bitat) {
2400 portp = brdp->ports[(channr - 1)];
2401 if (stli_hostcmd(brdp, portp)) {
2403 slavebits[bitpos] |= bitat;
2410 * If any of the ports are no longer busy then update them in the
2411 * slave request bits. We need to do this after, since a host port
2412 * service may initiate more slave requests.
2414 if (slavebitchange) {
2415 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2416 slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset;
2417 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2418 if (readb(slavebits + bitpos))
2419 writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos);
2424 /*****************************************************************************/
2427 * Driver poll routine. This routine polls the boards in use and passes
2428 * messages back up to host when necessary. This is actually very
2429 * CPU efficient, since we will always have the kernel poll clock, it
2430 * adds only a few cycles when idle (since board service can be
2431 * determined very easily), but when loaded generates no interrupts
2432 * (with their expensive associated context change).
2435 static void stli_poll(unsigned long arg)
2437 cdkhdr_t __iomem *hdrp;
2438 struct stlibrd *brdp;
2441 mod_timer(&stli_timerlist, STLI_TIMEOUT);
2444 * Check each board and do any servicing required.
2446 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
2447 brdp = stli_brds[brdnr];
2450 if ((brdp->state & BST_STARTED) == 0)
2453 spin_lock(&brd_lock);
2455 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2456 if (readb(&hdrp->hostreq))
2457 stli_brdpoll(brdp, hdrp);
2459 spin_unlock(&brd_lock);
2463 /*****************************************************************************/
2466 * Translate the termios settings into the port setting structure of
2470 static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp,
2471 asyport_t *pp, struct ktermios *tiosp)
2473 memset(pp, 0, sizeof(asyport_t));
2476 * Start of by setting the baud, char size, parity and stop bit info.
2478 pp->baudout = tty_get_baud_rate(tty);
2479 if ((tiosp->c_cflag & CBAUD) == B38400) {
2480 if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
2481 pp->baudout = 57600;
2482 else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
2483 pp->baudout = 115200;
2484 else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
2485 pp->baudout = 230400;
2486 else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
2487 pp->baudout = 460800;
2488 else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)
2489 pp->baudout = (portp->baud_base / portp->custom_divisor);
2491 if (pp->baudout > STL_MAXBAUD)
2492 pp->baudout = STL_MAXBAUD;
2493 pp->baudin = pp->baudout;
2495 switch (tiosp->c_cflag & CSIZE) {
2510 if (tiosp->c_cflag & CSTOPB)
2511 pp->stopbs = PT_STOP2;
2513 pp->stopbs = PT_STOP1;
2515 if (tiosp->c_cflag & PARENB) {
2516 if (tiosp->c_cflag & PARODD)
2517 pp->parity = PT_ODDPARITY;
2519 pp->parity = PT_EVENPARITY;
2521 pp->parity = PT_NOPARITY;
2525 * Set up any flow control options enabled.
2527 if (tiosp->c_iflag & IXON) {
2529 if (tiosp->c_iflag & IXANY)
2530 pp->flow |= F_IXANY;
2532 if (tiosp->c_cflag & CRTSCTS)
2533 pp->flow |= (F_RTSFLOW | F_CTSFLOW);
2535 pp->startin = tiosp->c_cc[VSTART];
2536 pp->stopin = tiosp->c_cc[VSTOP];
2537 pp->startout = tiosp->c_cc[VSTART];
2538 pp->stopout = tiosp->c_cc[VSTOP];
2541 * Set up the RX char marking mask with those RX error types we must
2542 * catch. We can get the slave to help us out a little here, it will
2543 * ignore parity errors and breaks for us, and mark parity errors in
2546 if (tiosp->c_iflag & IGNPAR)
2547 pp->iflag |= FI_IGNRXERRS;
2548 if (tiosp->c_iflag & IGNBRK)
2549 pp->iflag |= FI_IGNBREAK;
2551 portp->rxmarkmsk = 0;
2552 if (tiosp->c_iflag & (INPCK | PARMRK))
2553 pp->iflag |= FI_1MARKRXERRS;
2554 if (tiosp->c_iflag & BRKINT)
2555 portp->rxmarkmsk |= BRKINT;
2558 * Set up clocal processing as required.
2560 if (tiosp->c_cflag & CLOCAL)
2561 portp->port.flags &= ~ASYNC_CHECK_CD;
2563 portp->port.flags |= ASYNC_CHECK_CD;
2566 * Transfer any persistent flags into the asyport structure.
2568 pp->pflag = (portp->pflag & 0xffff);
2569 pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0;
2570 pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0;
2571 pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0;
2574 /*****************************************************************************/
2577 * Construct a slave signals structure for setting the DTR and RTS
2578 * signals as specified.
2581 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts)
2583 memset(sp, 0, sizeof(asysigs_t));
2585 sp->signal |= SG_DTR;
2586 sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0);
2589 sp->signal |= SG_RTS;
2590 sp->sigvalue |= ((rts > 0) ? SG_RTS : 0);
2594 /*****************************************************************************/
2597 * Convert the signals returned from the slave into a local TIOCM type
2598 * signals value. We keep them locally in TIOCM format.
2601 static long stli_mktiocm(unsigned long sigvalue)
2604 tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0);
2605 tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0);
2606 tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0);
2607 tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0);
2608 tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0);
2609 tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0);
2613 /*****************************************************************************/
2616 * All panels and ports actually attached have been worked out. All
2617 * we need to do here is set up the appropriate per port data structures.
2620 static int stli_initports(struct stlibrd *brdp)
2622 struct stliport *portp;
2623 unsigned int i, panelnr, panelport;
2625 for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) {
2626 portp = kzalloc(sizeof(struct stliport), GFP_KERNEL);
2628 printk("STALLION: failed to allocate port structure\n");
2631 tty_port_init(&portp->port);
2632 portp->port.ops = &stli_port_ops;
2633 portp->magic = STLI_PORTMAGIC;
2635 portp->brdnr = brdp->brdnr;
2636 portp->panelnr = panelnr;
2637 portp->baud_base = STL_BAUDBASE;
2638 portp->close_delay = STL_CLOSEDELAY;
2639 portp->closing_wait = 30 * HZ;
2640 init_waitqueue_head(&portp->port.open_wait);
2641 init_waitqueue_head(&portp->port.close_wait);
2642 init_waitqueue_head(&portp->raw_wait);
2644 if (panelport >= brdp->panels[panelnr]) {
2648 brdp->ports[i] = portp;
2654 /*****************************************************************************/
2657 * All the following routines are board specific hardware operations.
2660 static void stli_ecpinit(struct stlibrd *brdp)
2662 unsigned long memconf;
2664 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
2666 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2669 memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT;
2670 outb(memconf, (brdp->iobase + ECP_ATMEMAR));
2673 /*****************************************************************************/
2675 static void stli_ecpenable(struct stlibrd *brdp)
2677 outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR));
2680 /*****************************************************************************/
2682 static void stli_ecpdisable(struct stlibrd *brdp)
2684 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2687 /*****************************************************************************/
2689 static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2694 if (offset > brdp->memsize) {
2695 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2696 "range at line=%d(%d), brd=%d\n",
2697 (int) offset, line, __LINE__, brdp->brdnr);
2701 ptr = brdp->membase + (offset % ECP_ATPAGESIZE);
2702 val = (unsigned char) (offset / ECP_ATPAGESIZE);
2704 outb(val, (brdp->iobase + ECP_ATMEMPR));
2708 /*****************************************************************************/
2710 static void stli_ecpreset(struct stlibrd *brdp)
2712 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
2714 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2718 /*****************************************************************************/
2720 static void stli_ecpintr(struct stlibrd *brdp)
2722 outb(0x1, brdp->iobase);
2725 /*****************************************************************************/
2728 * The following set of functions act on ECP EISA boards.
2731 static void stli_ecpeiinit(struct stlibrd *brdp)
2733 unsigned long memconf;
2735 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
2736 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
2738 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2741 memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL;
2742 outb(memconf, (brdp->iobase + ECP_EIMEMARL));
2743 memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH;
2744 outb(memconf, (brdp->iobase + ECP_EIMEMARH));
2747 /*****************************************************************************/
2749 static void stli_ecpeienable(struct stlibrd *brdp)
2751 outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR));
2754 /*****************************************************************************/
2756 static void stli_ecpeidisable(struct stlibrd *brdp)
2758 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2761 /*****************************************************************************/
2763 static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2768 if (offset > brdp->memsize) {
2769 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2770 "range at line=%d(%d), brd=%d\n",
2771 (int) offset, line, __LINE__, brdp->brdnr);
2775 ptr = brdp->membase + (offset % ECP_EIPAGESIZE);
2776 if (offset < ECP_EIPAGESIZE)
2779 val = ECP_EIENABLE | 0x40;
2781 outb(val, (brdp->iobase + ECP_EICONFR));
2785 /*****************************************************************************/
2787 static void stli_ecpeireset(struct stlibrd *brdp)
2789 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
2791 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2795 /*****************************************************************************/
2798 * The following set of functions act on ECP MCA boards.
2801 static void stli_ecpmcenable(struct stlibrd *brdp)
2803 outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR));
2806 /*****************************************************************************/
2808 static void stli_ecpmcdisable(struct stlibrd *brdp)
2810 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
2813 /*****************************************************************************/
2815 static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2820 if (offset > brdp->memsize) {
2821 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2822 "range at line=%d(%d), brd=%d\n",
2823 (int) offset, line, __LINE__, brdp->brdnr);
2827 ptr = brdp->membase + (offset % ECP_MCPAGESIZE);
2828 val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE;
2830 outb(val, (brdp->iobase + ECP_MCCONFR));
2834 /*****************************************************************************/
2836 static void stli_ecpmcreset(struct stlibrd *brdp)
2838 outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR));
2840 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
2844 /*****************************************************************************/
2847 * The following set of functions act on ECP PCI boards.
2850 static void stli_ecppciinit(struct stlibrd *brdp)
2852 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
2854 outb(0, (brdp->iobase + ECP_PCICONFR));
2858 /*****************************************************************************/
2860 static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2865 if (offset > brdp->memsize) {
2866 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2867 "range at line=%d(%d), board=%d\n",
2868 (int) offset, line, __LINE__, brdp->brdnr);
2872 ptr = brdp->membase + (offset % ECP_PCIPAGESIZE);
2873 val = (offset / ECP_PCIPAGESIZE) << 1;
2875 outb(val, (brdp->iobase + ECP_PCICONFR));
2879 /*****************************************************************************/
2881 static void stli_ecppcireset(struct stlibrd *brdp)
2883 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
2885 outb(0, (brdp->iobase + ECP_PCICONFR));
2889 /*****************************************************************************/
2892 * The following routines act on ONboards.
2895 static void stli_onbinit(struct stlibrd *brdp)
2897 unsigned long memconf;
2899 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
2901 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
2904 memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT;
2905 outb(memconf, (brdp->iobase + ONB_ATMEMAR));
2906 outb(0x1, brdp->iobase);
2910 /*****************************************************************************/
2912 static void stli_onbenable(struct stlibrd *brdp)
2914 outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR));
2917 /*****************************************************************************/
2919 static void stli_onbdisable(struct stlibrd *brdp)
2921 outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR));
2924 /*****************************************************************************/
2926 static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2930 if (offset > brdp->memsize) {
2931 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2932 "range at line=%d(%d), brd=%d\n",
2933 (int) offset, line, __LINE__, brdp->brdnr);
2936 ptr = brdp->membase + (offset % ONB_ATPAGESIZE);
2941 /*****************************************************************************/
2943 static void stli_onbreset(struct stlibrd *brdp)
2945 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
2947 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
2951 /*****************************************************************************/
2954 * The following routines act on ONboard EISA.
2957 static void stli_onbeinit(struct stlibrd *brdp)
2959 unsigned long memconf;
2961 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
2962 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
2964 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
2967 memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL;
2968 outb(memconf, (brdp->iobase + ONB_EIMEMARL));
2969 memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH;
2970 outb(memconf, (brdp->iobase + ONB_EIMEMARH));
2971 outb(0x1, brdp->iobase);
2975 /*****************************************************************************/
2977 static void stli_onbeenable(struct stlibrd *brdp)
2979 outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR));
2982 /*****************************************************************************/
2984 static void stli_onbedisable(struct stlibrd *brdp)
2986 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
2989 /*****************************************************************************/
2991 static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2996 if (offset > brdp->memsize) {
2997 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2998 "range at line=%d(%d), brd=%d\n",
2999 (int) offset, line, __LINE__, brdp->brdnr);
3003 ptr = brdp->membase + (offset % ONB_EIPAGESIZE);
3004 if (offset < ONB_EIPAGESIZE)
3007 val = ONB_EIENABLE | 0x40;
3009 outb(val, (brdp->iobase + ONB_EICONFR));
3013 /*****************************************************************************/
3015 static void stli_onbereset(struct stlibrd *brdp)
3017 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3019 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3023 /*****************************************************************************/
3026 * The following routines act on Brumby boards.
3029 static void stli_bbyinit(struct stlibrd *brdp)
3031 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
3033 outb(0, (brdp->iobase + BBY_ATCONFR));
3035 outb(0x1, brdp->iobase);
3039 /*****************************************************************************/
3041 static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
3046 BUG_ON(offset > brdp->memsize);
3048 ptr = brdp->membase + (offset % BBY_PAGESIZE);
3049 val = (unsigned char) (offset / BBY_PAGESIZE);
3050 outb(val, (brdp->iobase + BBY_ATCONFR));
3054 /*****************************************************************************/
3056 static void stli_bbyreset(struct stlibrd *brdp)
3058 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
3060 outb(0, (brdp->iobase + BBY_ATCONFR));
3064 /*****************************************************************************/
3067 * The following routines act on original old Stallion boards.
3070 static void stli_stalinit(struct stlibrd *brdp)
3072 outb(0x1, brdp->iobase);
3076 /*****************************************************************************/
3078 static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
3080 BUG_ON(offset > brdp->memsize);
3081 return brdp->membase + (offset % STAL_PAGESIZE);
3084 /*****************************************************************************/
3086 static void stli_stalreset(struct stlibrd *brdp)
3090 vecp = (u32 __iomem *) (brdp->membase + 0x30);
3091 writel(0xffff0000, vecp);
3092 outb(0, brdp->iobase);
3096 /*****************************************************************************/
3099 * Try to find an ECP board and initialize it. This handles only ECP
3103 static int stli_initecp(struct stlibrd *brdp)
3106 cdkecpsig_t __iomem *sigsp;
3107 unsigned int status, nxtid;
3109 int retval, panelnr, nrports;
3111 if ((brdp->iobase == 0) || (brdp->memaddr == 0)) {
3116 brdp->iosize = ECP_IOSIZE;
3118 if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
3124 * Based on the specific board type setup the common vars to access
3125 * and enable shared memory. Set all board specific information now
3128 switch (brdp->brdtype) {
3130 brdp->memsize = ECP_MEMSIZE;
3131 brdp->pagesize = ECP_ATPAGESIZE;
3132 brdp->init = stli_ecpinit;
3133 brdp->enable = stli_ecpenable;
3134 brdp->reenable = stli_ecpenable;
3135 brdp->disable = stli_ecpdisable;
3136 brdp->getmemptr = stli_ecpgetmemptr;
3137 brdp->intr = stli_ecpintr;
3138 brdp->reset = stli_ecpreset;
3139 name = "serial(EC8/64)";
3143 brdp->memsize = ECP_MEMSIZE;
3144 brdp->pagesize = ECP_EIPAGESIZE;
3145 brdp->init = stli_ecpeiinit;
3146 brdp->enable = stli_ecpeienable;
3147 brdp->reenable = stli_ecpeienable;
3148 brdp->disable = stli_ecpeidisable;
3149 brdp->getmemptr = stli_ecpeigetmemptr;
3150 brdp->intr = stli_ecpintr;
3151 brdp->reset = stli_ecpeireset;
3152 name = "serial(EC8/64-EI)";
3156 brdp->memsize = ECP_MEMSIZE;
3157 brdp->pagesize = ECP_MCPAGESIZE;
3159 brdp->enable = stli_ecpmcenable;
3160 brdp->reenable = stli_ecpmcenable;
3161 brdp->disable = stli_ecpmcdisable;
3162 brdp->getmemptr = stli_ecpmcgetmemptr;
3163 brdp->intr = stli_ecpintr;
3164 brdp->reset = stli_ecpmcreset;
3165 name = "serial(EC8/64-MCA)";
3169 brdp->memsize = ECP_PCIMEMSIZE;
3170 brdp->pagesize = ECP_PCIPAGESIZE;
3171 brdp->init = stli_ecppciinit;
3172 brdp->enable = NULL;
3173 brdp->reenable = NULL;
3174 brdp->disable = NULL;
3175 brdp->getmemptr = stli_ecppcigetmemptr;
3176 brdp->intr = stli_ecpintr;
3177 brdp->reset = stli_ecppcireset;
3178 name = "serial(EC/RA-PCI)";
3187 * The per-board operations structure is all set up, so now let's go
3188 * and get the board operational. Firstly initialize board configuration
3189 * registers. Set the memory mapping info so we can get at the boards
3194 brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize);
3195 if (brdp->membase == NULL) {
3201 * Now that all specific code is set up, enable the shared memory and
3202 * look for the a signature area that will tell us exactly what board
3203 * this is, and what it is connected to it.
3206 sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3207 memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t));
3210 if (sig.magic != cpu_to_le32(ECP_MAGIC)) {
3216 * Scan through the signature looking at the panels connected to the
3217 * board. Calculate the total number of ports as we go.
3219 for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) {
3220 status = sig.panelid[nxtid];
3221 if ((status & ECH_PNLIDMASK) != nxtid)
3224 brdp->panelids[panelnr] = status;
3225 nrports = (status & ECH_PNL16PORT) ? 16 : 8;
3226 if ((nrports == 16) && ((status & ECH_PNLXPID) == 0))
3228 brdp->panels[panelnr] = nrports;
3229 brdp->nrports += nrports;
3235 brdp->state |= BST_FOUND;
3238 iounmap(brdp->membase);
3239 brdp->membase = NULL;
3241 release_region(brdp->iobase, brdp->iosize);
3246 /*****************************************************************************/
3249 * Try to find an ONboard, Brumby or Stallion board and initialize it.
3250 * This handles only these board types.
3253 static int stli_initonb(struct stlibrd *brdp)
3256 cdkonbsig_t __iomem *sigsp;
3261 * Do a basic sanity check on the IO and memory addresses.
3263 if (brdp->iobase == 0 || brdp->memaddr == 0) {
3268 brdp->iosize = ONB_IOSIZE;
3270 if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
3276 * Based on the specific board type setup the common vars to access
3277 * and enable shared memory. Set all board specific information now
3280 switch (brdp->brdtype) {
3283 brdp->memsize = ONB_MEMSIZE;
3284 brdp->pagesize = ONB_ATPAGESIZE;
3285 brdp->init = stli_onbinit;
3286 brdp->enable = stli_onbenable;
3287 brdp->reenable = stli_onbenable;
3288 brdp->disable = stli_onbdisable;
3289 brdp->getmemptr = stli_onbgetmemptr;
3290 brdp->intr = stli_ecpintr;
3291 brdp->reset = stli_onbreset;
3292 if (brdp->memaddr > 0x100000)
3293 brdp->enabval = ONB_MEMENABHI;
3295 brdp->enabval = ONB_MEMENABLO;
3296 name = "serial(ONBoard)";
3300 brdp->memsize = ONB_EIMEMSIZE;
3301 brdp->pagesize = ONB_EIPAGESIZE;
3302 brdp->init = stli_onbeinit;
3303 brdp->enable = stli_onbeenable;
3304 brdp->reenable = stli_onbeenable;
3305 brdp->disable = stli_onbedisable;
3306 brdp->getmemptr = stli_onbegetmemptr;
3307 brdp->intr = stli_ecpintr;
3308 brdp->reset = stli_onbereset;
3309 name = "serial(ONBoard/E)";
3313 brdp->memsize = BBY_MEMSIZE;
3314 brdp->pagesize = BBY_PAGESIZE;
3315 brdp->init = stli_bbyinit;
3316 brdp->enable = NULL;
3317 brdp->reenable = NULL;
3318 brdp->disable = NULL;
3319 brdp->getmemptr = stli_bbygetmemptr;
3320 brdp->intr = stli_ecpintr;
3321 brdp->reset = stli_bbyreset;
3322 name = "serial(Brumby)";
3326 brdp->memsize = STAL_MEMSIZE;
3327 brdp->pagesize = STAL_PAGESIZE;
3328 brdp->init = stli_stalinit;
3329 brdp->enable = NULL;
3330 brdp->reenable = NULL;
3331 brdp->disable = NULL;
3332 brdp->getmemptr = stli_stalgetmemptr;
3333 brdp->intr = stli_ecpintr;
3334 brdp->reset = stli_stalreset;
3335 name = "serial(Stallion)";
3344 * The per-board operations structure is all set up, so now let's go
3345 * and get the board operational. Firstly initialize board configuration
3346 * registers. Set the memory mapping info so we can get at the boards
3351 brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize);
3352 if (brdp->membase == NULL) {
3358 * Now that all specific code is set up, enable the shared memory and
3359 * look for the a signature area that will tell us exactly what board
3360 * this is, and how many ports.
3363 sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3364 memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t));
3367 if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) ||
3368 sig.magic1 != cpu_to_le16(ONB_MAGIC1) ||
3369 sig.magic2 != cpu_to_le16(ONB_MAGIC2) ||
3370 sig.magic3 != cpu_to_le16(ONB_MAGIC3)) {
3376 * Scan through the signature alive mask and calculate how many ports
3377 * there are on this board.
3383 for (i = 0; (i < 16); i++) {
3384 if (((sig.amask0 << i) & 0x8000) == 0)
3389 brdp->panels[0] = brdp->nrports;
3392 brdp->state |= BST_FOUND;
3395 iounmap(brdp->membase);
3396 brdp->membase = NULL;
3398 release_region(brdp->iobase, brdp->iosize);
3403 /*****************************************************************************/
3406 * Start up a running board. This routine is only called after the
3407 * code has been down loaded to the board and is operational. It will
3408 * read in the memory map, and get the show on the road...
3411 static int stli_startbrd(struct stlibrd *brdp)
3413 cdkhdr_t __iomem *hdrp;
3414 cdkmem_t __iomem *memp;
3415 cdkasy_t __iomem *ap;
3416 unsigned long flags;
3417 unsigned int portnr, nrdevs, i;
3418 struct stliport *portp;
3422 spin_lock_irqsave(&brd_lock, flags);
3424 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
3425 nrdevs = hdrp->nrdevs;
3428 printk("%s(%d): CDK version %d.%d.%d --> "
3429 "nrdevs=%d memp=%x hostp=%x slavep=%x\n",
3430 __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification),
3431 readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp),
3432 readl(&hdrp->slavep));
3435 if (nrdevs < (brdp->nrports + 1)) {
3436 printk(KERN_ERR "STALLION: slave failed to allocate memory for "
3437 "all devices, devices=%d\n", nrdevs);
3438 brdp->nrports = nrdevs - 1;
3440 brdp->nrdevs = nrdevs;
3441 brdp->hostoffset = hdrp->hostp - CDK_CDKADDR;
3442 brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR;
3443 brdp->bitsize = (nrdevs + 7) / 8;
3444 memoff = readl(&hdrp->memp);
3445 if (memoff > brdp->memsize) {
3446 printk(KERN_ERR "STALLION: corrupted shared memory region?\n");
3448 goto stli_donestartup;
3450 memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff);
3451 if (readw(&memp->dtype) != TYP_ASYNCTRL) {
3452 printk(KERN_ERR "STALLION: no slave control device found\n");
3453 goto stli_donestartup;
3458 * Cycle through memory allocation of each port. We are guaranteed to
3459 * have all ports inside the first page of slave window, so no need to
3460 * change pages while reading memory map.
3462 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) {
3463 if (readw(&memp->dtype) != TYP_ASYNC)
3465 portp = brdp->ports[portnr];
3469 portp->addr = readl(&memp->offset);
3470 portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs));
3471 portp->portidx = (unsigned char) (i / 8);
3472 portp->portbit = (unsigned char) (0x1 << (i % 8));
3475 writeb(0xff, &hdrp->slavereq);
3478 * For each port setup a local copy of the RX and TX buffer offsets
3479 * and sizes. We do this separate from the above, because we need to
3480 * move the shared memory page...
3482 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) {
3483 portp = brdp->ports[portnr];
3486 if (portp->addr == 0)
3488 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
3490 portp->rxsize = readw(&ap->rxq.size);
3491 portp->txsize = readw(&ap->txq.size);
3492 portp->rxoffset = readl(&ap->rxq.offset);
3493 portp->txoffset = readl(&ap->txq.offset);
3499 spin_unlock_irqrestore(&brd_lock, flags);
3502 brdp->state |= BST_STARTED;
3504 if (! stli_timeron) {
3506 mod_timer(&stli_timerlist, STLI_TIMEOUT);
3512 /*****************************************************************************/
3515 * Probe and initialize the specified board.
3518 static int __devinit stli_brdinit(struct stlibrd *brdp)
3522 switch (brdp->brdtype) {
3527 retval = stli_initecp(brdp);
3534 retval = stli_initonb(brdp);
3537 printk(KERN_ERR "STALLION: board=%d is unknown board "
3538 "type=%d\n", brdp->brdnr, brdp->brdtype);
3545 stli_initports(brdp);
3546 printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x "
3547 "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype],
3548 brdp->brdnr, brdp->iobase, (int) brdp->memaddr,
3549 brdp->nrpanels, brdp->nrports);
3553 #if STLI_EISAPROBE != 0
3554 /*****************************************************************************/
3557 * Probe around trying to find where the EISA boards shared memory
3558 * might be. This is a bit if hack, but it is the best we can do.
3561 static int stli_eisamemprobe(struct stlibrd *brdp)
3563 cdkecpsig_t ecpsig, __iomem *ecpsigp;
3564 cdkonbsig_t onbsig, __iomem *onbsigp;
3568 * First up we reset the board, to get it into a known state. There
3569 * is only 2 board types here we need to worry about. Don;t use the
3570 * standard board init routine here, it programs up the shared
3571 * memory address, and we don't know it yet...
3573 if (brdp->brdtype == BRD_ECPE) {
3574 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
3575 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
3577 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3579 stli_ecpeienable(brdp);
3580 } else if (brdp->brdtype == BRD_ONBOARDE) {
3581 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
3582 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3584 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3586 outb(0x1, brdp->iobase);
3588 stli_onbeenable(brdp);
3594 brdp->memsize = ECP_MEMSIZE;
3597 * Board shared memory is enabled, so now we have a poke around and
3598 * see if we can find it.
3600 for (i = 0; (i < stli_eisamempsize); i++) {
3601 brdp->memaddr = stli_eisamemprobeaddrs[i];
3602 brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize);
3603 if (brdp->membase == NULL)
3606 if (brdp->brdtype == BRD_ECPE) {
3607 ecpsigp = stli_ecpeigetmemptr(brdp,
3608 CDK_SIGADDR, __LINE__);
3609 memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t));
3610 if (ecpsig.magic == cpu_to_le32(ECP_MAGIC))
3613 onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp,
3614 CDK_SIGADDR, __LINE__);
3615 memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t));
3616 if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) &&
3617 (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) &&
3618 (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) &&
3619 (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3)))
3623 iounmap(brdp->membase);
3629 * Regardless of whether we found the shared memory or not we must
3630 * disable the region. After that return success or failure.
3632 if (brdp->brdtype == BRD_ECPE)
3633 stli_ecpeidisable(brdp);
3635 stli_onbedisable(brdp);
3639 brdp->membase = NULL;
3640 printk(KERN_ERR "STALLION: failed to probe shared memory "
3641 "region for %s in EISA slot=%d\n",
3642 stli_brdnames[brdp->brdtype], (brdp->iobase >> 12));
3649 static int stli_getbrdnr(void)
3653 for (i = 0; i < STL_MAXBRDS; i++) {
3654 if (!stli_brds[i]) {
3655 if (i >= stli_nrbrds)
3656 stli_nrbrds = i + 1;
3663 #if STLI_EISAPROBE != 0
3664 /*****************************************************************************/
3667 * Probe around and try to find any EISA boards in system. The biggest
3668 * problem here is finding out what memory address is associated with
3669 * an EISA board after it is found. The registers of the ECPE and
3670 * ONboardE are not readable - so we can't read them from there. We
3671 * don't have access to the EISA CMOS (or EISA BIOS) so we don't
3672 * actually have any way to find out the real value. The best we can
3673 * do is go probing around in the usual places hoping we can find it.
3676 static int __init stli_findeisabrds(void)
3678 struct stlibrd *brdp;
3679 unsigned int iobase, eid, i;
3680 int brdnr, found = 0;
3683 * Firstly check if this is an EISA system. If this is not an EISA system then
3684 * don't bother going any further!
3690 * Looks like an EISA system, so go searching for EISA boards.
3692 for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) {
3693 outb(0xff, (iobase + 0xc80));
3694 eid = inb(iobase + 0xc80);
3695 eid |= inb(iobase + 0xc81) << 8;
3696 if (eid != STL_EISAID)
3700 * We have found a board. Need to check if this board was
3701 * statically configured already (just in case!).
3703 for (i = 0; (i < STL_MAXBRDS); i++) {
3704 brdp = stli_brds[i];
3707 if (brdp->iobase == iobase)
3710 if (i < STL_MAXBRDS)
3714 * We have found a Stallion board and it is not configured already.
3715 * Allocate a board structure and initialize it.
3717 if ((brdp = stli_allocbrd()) == NULL)
3718 return found ? : -ENOMEM;
3719 brdnr = stli_getbrdnr();
3721 return found ? : -ENOMEM;
3722 brdp->brdnr = (unsigned int)brdnr;
3723 eid = inb(iobase + 0xc82);
3724 if (eid == ECP_EISAID)
3725 brdp->brdtype = BRD_ECPE;
3726 else if (eid == ONB_EISAID)
3727 brdp->brdtype = BRD_ONBOARDE;
3729 brdp->brdtype = BRD_UNKNOWN;
3730 brdp->iobase = iobase;
3731 outb(0x1, (iobase + 0xc84));
3732 if (stli_eisamemprobe(brdp))
3733 outb(0, (iobase + 0xc84));
3734 if (stli_brdinit(brdp) < 0) {
3739 stli_brds[brdp->brdnr] = brdp;
3742 for (i = 0; i < brdp->nrports; i++)
3743 tty_register_device(stli_serial,
3744 brdp->brdnr * STL_MAXPORTS + i, NULL);
3750 static inline int stli_findeisabrds(void) { return 0; }
3753 /*****************************************************************************/
3756 * Find the next available board number that is free.
3759 /*****************************************************************************/
3762 * We have a Stallion board. Allocate a board structure and
3763 * initialize it. Read its IO and MEMORY resources from PCI
3764 * configuration space.
3767 static int __devinit stli_pciprobe(struct pci_dev *pdev,
3768 const struct pci_device_id *ent)
3770 struct stlibrd *brdp;
3772 int brdnr, retval = -EIO;
3774 retval = pci_enable_device(pdev);
3777 brdp = stli_allocbrd();
3782 mutex_lock(&stli_brdslock);
3783 brdnr = stli_getbrdnr();
3785 printk(KERN_INFO "STALLION: too many boards found, "
3786 "maximum supported %d\n", STL_MAXBRDS);
3787 mutex_unlock(&stli_brdslock);
3791 brdp->brdnr = (unsigned int)brdnr;
3792 stli_brds[brdp->brdnr] = brdp;
3793 mutex_unlock(&stli_brdslock);
3794 brdp->brdtype = BRD_ECPPCI;
3796 * We have all resources from the board, so lets setup the actual
3797 * board structure now.
3799 brdp->iobase = pci_resource_start(pdev, 3);
3800 brdp->memaddr = pci_resource_start(pdev, 2);
3801 retval = stli_brdinit(brdp);
3805 brdp->state |= BST_PROBED;
3806 pci_set_drvdata(pdev, brdp);
3809 brdp->enable = NULL;
3810 brdp->disable = NULL;
3812 for (i = 0; i < brdp->nrports; i++)
3813 tty_register_device(stli_serial, brdp->brdnr * STL_MAXPORTS + i,
3818 stli_brds[brdp->brdnr] = NULL;
3825 static void stli_pciremove(struct pci_dev *pdev)
3827 struct stlibrd *brdp = pci_get_drvdata(pdev);
3829 stli_cleanup_ports(brdp);
3831 iounmap(brdp->membase);
3832 if (brdp->iosize > 0)
3833 release_region(brdp->iobase, brdp->iosize);
3835 stli_brds[brdp->brdnr] = NULL;
3839 static struct pci_driver stli_pcidriver = {
3840 .name = "istallion",
3841 .id_table = istallion_pci_tbl,
3842 .probe = stli_pciprobe,
3843 .remove = __devexit_p(stli_pciremove)
3845 /*****************************************************************************/
3848 * Allocate a new board structure. Fill out the basic info in it.
3851 static struct stlibrd *stli_allocbrd(void)
3853 struct stlibrd *brdp;
3855 brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL);
3857 printk(KERN_ERR "STALLION: failed to allocate memory "
3858 "(size=%Zd)\n", sizeof(struct stlibrd));
3861 brdp->magic = STLI_BOARDMAGIC;
3865 /*****************************************************************************/
3868 * Scan through all the boards in the configuration and see what we
3872 static int __init stli_initbrds(void)
3874 struct stlibrd *brdp, *nxtbrdp;
3875 struct stlconf conf;
3876 unsigned int i, j, found = 0;
3879 for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp);
3881 memset(&conf, 0, sizeof(conf));
3882 if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0)
3884 if ((brdp = stli_allocbrd()) == NULL)
3886 brdp->brdnr = stli_nrbrds;
3887 brdp->brdtype = conf.brdtype;
3888 brdp->iobase = conf.ioaddr1;
3889 brdp->memaddr = conf.memaddr;
3890 if (stli_brdinit(brdp) < 0) {
3894 stli_brds[brdp->brdnr] = brdp;
3897 for (i = 0; i < brdp->nrports; i++)
3898 tty_register_device(stli_serial,
3899 brdp->brdnr * STL_MAXPORTS + i, NULL);
3902 retval = stli_findeisabrds();
3907 * All found boards are initialized. Now for a little optimization, if
3908 * no boards are sharing the "shared memory" regions then we can just
3909 * leave them all enabled. This is in fact the usual case.
3912 if (stli_nrbrds > 1) {
3913 for (i = 0; (i < stli_nrbrds); i++) {
3914 brdp = stli_brds[i];
3917 for (j = i + 1; (j < stli_nrbrds); j++) {
3918 nxtbrdp = stli_brds[j];
3919 if (nxtbrdp == NULL)
3921 if ((brdp->membase >= nxtbrdp->membase) &&
3922 (brdp->membase <= (nxtbrdp->membase +
3923 nxtbrdp->memsize - 1))) {
3931 if (stli_shared == 0) {
3932 for (i = 0; (i < stli_nrbrds); i++) {
3933 brdp = stli_brds[i];
3936 if (brdp->state & BST_FOUND) {
3938 brdp->enable = NULL;
3939 brdp->disable = NULL;
3944 retval = pci_register_driver(&stli_pcidriver);
3945 if (retval && found == 0) {
3946 printk(KERN_ERR "Neither isa nor eisa cards found nor pci "
3947 "driver can be registered!\n");
3956 /*****************************************************************************/
3959 * Code to handle an "staliomem" read operation. This device is the
3960 * contents of the board shared memory. It is used for down loading
3961 * the slave image (and debugging :-)
3964 static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp)
3966 unsigned long flags;
3967 void __iomem *memptr;
3968 struct stlibrd *brdp;
3974 brdnr = iminor(fp->f_path.dentry->d_inode);
3975 if (brdnr >= stli_nrbrds)
3977 brdp = stli_brds[brdnr];
3980 if (brdp->state == 0)
3982 if (off >= brdp->memsize || off + count < off)
3985 size = min(count, (size_t)(brdp->memsize - off));
3988 * Copy the data a page at a time
3991 p = (void *)__get_free_page(GFP_KERNEL);
3996 spin_lock_irqsave(&brd_lock, flags);
3998 memptr = EBRDGETMEMPTR(brdp, off);
3999 n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
4000 n = min(n, (int)PAGE_SIZE);
4001 memcpy_fromio(p, memptr, n);
4003 spin_unlock_irqrestore(&brd_lock, flags);
4004 if (copy_to_user(buf, p, n)) {
4014 free_page((unsigned long)p);
4018 /*****************************************************************************/
4021 * Code to handle an "staliomem" write operation. This device is the
4022 * contents of the board shared memory. It is used for down loading
4023 * the slave image (and debugging :-)
4025 * FIXME: copy under lock
4028 static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp)
4030 unsigned long flags;
4031 void __iomem *memptr;
4032 struct stlibrd *brdp;
4039 brdnr = iminor(fp->f_path.dentry->d_inode);
4041 if (brdnr >= stli_nrbrds)
4043 brdp = stli_brds[brdnr];
4046 if (brdp->state == 0)
4048 if (off >= brdp->memsize || off + count < off)
4051 chbuf = (char __user *) buf;
4052 size = min(count, (size_t)(brdp->memsize - off));
4055 * Copy the data a page at a time
4058 p = (void *)__get_free_page(GFP_KERNEL);
4063 n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
4064 n = min(n, (int)PAGE_SIZE);
4065 if (copy_from_user(p, chbuf, n)) {
4070 spin_lock_irqsave(&brd_lock, flags);
4072 memptr = EBRDGETMEMPTR(brdp, off);
4073 memcpy_toio(memptr, p, n);
4075 spin_unlock_irqrestore(&brd_lock, flags);
4081 free_page((unsigned long) p);
4086 /*****************************************************************************/
4089 * Return the board stats structure to user app.
4092 static int stli_getbrdstats(combrd_t __user *bp)
4094 struct stlibrd *brdp;
4097 if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t)))
4099 if (stli_brdstats.brd >= STL_MAXBRDS)
4101 brdp = stli_brds[stli_brdstats.brd];
4105 memset(&stli_brdstats, 0, sizeof(combrd_t));
4106 stli_brdstats.brd = brdp->brdnr;
4107 stli_brdstats.type = brdp->brdtype;
4108 stli_brdstats.hwid = 0;
4109 stli_brdstats.state = brdp->state;
4110 stli_brdstats.ioaddr = brdp->iobase;
4111 stli_brdstats.memaddr = brdp->memaddr;
4112 stli_brdstats.nrpanels = brdp->nrpanels;
4113 stli_brdstats.nrports = brdp->nrports;
4114 for (i = 0; (i < brdp->nrpanels); i++) {
4115 stli_brdstats.panels[i].panel = i;
4116 stli_brdstats.panels[i].hwid = brdp->panelids[i];
4117 stli_brdstats.panels[i].nrports = brdp->panels[i];
4120 if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t)))
4125 /*****************************************************************************/
4128 * Resolve the referenced port number into a port struct pointer.
4131 static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr,
4132 unsigned int portnr)
4134 struct stlibrd *brdp;
4137 if (brdnr >= STL_MAXBRDS)
4139 brdp = stli_brds[brdnr];
4142 for (i = 0; (i < panelnr); i++)
4143 portnr += brdp->panels[i];
4144 if (portnr >= brdp->nrports)
4146 return brdp->ports[portnr];
4149 /*****************************************************************************/
4152 * Return the port stats structure to user app. A NULL port struct
4153 * pointer passed in means that we need to find out from the app
4154 * what port to get stats for (used through board control device).
4157 static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp)
4159 unsigned long flags;
4160 struct stlibrd *brdp;
4163 memset(&stli_comstats, 0, sizeof(comstats_t));
4167 brdp = stli_brds[portp->brdnr];
4171 if (brdp->state & BST_STARTED) {
4172 if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS,
4173 &stli_cdkstats, sizeof(asystats_t), 1)) < 0)
4176 memset(&stli_cdkstats, 0, sizeof(asystats_t));
4179 stli_comstats.brd = portp->brdnr;
4180 stli_comstats.panel = portp->panelnr;
4181 stli_comstats.port = portp->portnr;
4182 stli_comstats.state = portp->state;
4183 stli_comstats.flags = portp->port.flags;
4185 spin_lock_irqsave(&brd_lock, flags);
4187 if (portp->port.tty == tty) {
4188 stli_comstats.ttystate = tty->flags;
4189 stli_comstats.rxbuffered = -1;
4190 if (tty->termios != NULL) {
4191 stli_comstats.cflags = tty->termios->c_cflag;
4192 stli_comstats.iflags = tty->termios->c_iflag;
4193 stli_comstats.oflags = tty->termios->c_oflag;
4194 stli_comstats.lflags = tty->termios->c_lflag;
4198 spin_unlock_irqrestore(&brd_lock, flags);
4200 stli_comstats.txtotal = stli_cdkstats.txchars;
4201 stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover;
4202 stli_comstats.txbuffered = stli_cdkstats.txringq;
4203 stli_comstats.rxbuffered += stli_cdkstats.rxringq;
4204 stli_comstats.rxoverrun = stli_cdkstats.overruns;
4205 stli_comstats.rxparity = stli_cdkstats.parity;
4206 stli_comstats.rxframing = stli_cdkstats.framing;
4207 stli_comstats.rxlost = stli_cdkstats.ringover;
4208 stli_comstats.rxbreaks = stli_cdkstats.rxbreaks;
4209 stli_comstats.txbreaks = stli_cdkstats.txbreaks;
4210 stli_comstats.txxon = stli_cdkstats.txstart;
4211 stli_comstats.txxoff = stli_cdkstats.txstop;
4212 stli_comstats.rxxon = stli_cdkstats.rxstart;
4213 stli_comstats.rxxoff = stli_cdkstats.rxstop;
4214 stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2;
4215 stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff;
4216 stli_comstats.modem = stli_cdkstats.dcdcnt;
4217 stli_comstats.hwid = stli_cdkstats.hwid;
4218 stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals);
4223 /*****************************************************************************/
4226 * Return the port stats structure to user app. A NULL port struct
4227 * pointer passed in means that we need to find out from the app
4228 * what port to get stats for (used through board control device).
4231 static int stli_getportstats(struct tty_struct *tty, struct stliport *portp,
4232 comstats_t __user *cp)
4234 struct stlibrd *brdp;
4238 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4240 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4241 stli_comstats.port);
4246 brdp = stli_brds[portp->brdnr];
4250 if ((rc = stli_portcmdstats(tty, portp)) < 0)
4253 return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ?
4257 /*****************************************************************************/
4260 * Clear the port stats structure. We also return it zeroed out...
4263 static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp)
4265 struct stlibrd *brdp;
4269 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4271 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4272 stli_comstats.port);
4277 brdp = stli_brds[portp->brdnr];
4281 if (brdp->state & BST_STARTED) {
4282 if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0)
4286 memset(&stli_comstats, 0, sizeof(comstats_t));
4287 stli_comstats.brd = portp->brdnr;
4288 stli_comstats.panel = portp->panelnr;
4289 stli_comstats.port = portp->portnr;
4291 if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t)))
4296 /*****************************************************************************/
4299 * Return the entire driver ports structure to a user app.
4302 static int stli_getportstruct(struct stliport __user *arg)
4304 struct stliport stli_dummyport;
4305 struct stliport *portp;
4307 if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport)))
4309 portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr,
4310 stli_dummyport.portnr);
4313 if (copy_to_user(arg, portp, sizeof(struct stliport)))
4318 /*****************************************************************************/
4321 * Return the entire driver board structure to a user app.
4324 static int stli_getbrdstruct(struct stlibrd __user *arg)
4326 struct stlibrd stli_dummybrd;
4327 struct stlibrd *brdp;
4329 if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd)))
4331 if (stli_dummybrd.brdnr >= STL_MAXBRDS)
4333 brdp = stli_brds[stli_dummybrd.brdnr];
4336 if (copy_to_user(arg, brdp, sizeof(struct stlibrd)))
4341 /*****************************************************************************/
4344 * The "staliomem" device is also required to do some special operations on
4345 * the board. We need to be able to send an interrupt to the board,
4346 * reset it, and start/stop it.
4349 static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg)
4351 struct stlibrd *brdp;
4352 int brdnr, rc, done;
4353 void __user *argp = (void __user *)arg;
4356 * First up handle the board independent ioctls.
4364 case COM_GETPORTSTATS:
4365 rc = stli_getportstats(NULL, NULL, argp);
4368 case COM_CLRPORTSTATS:
4369 rc = stli_clrportstats(NULL, argp);
4372 case COM_GETBRDSTATS:
4373 rc = stli_getbrdstats(argp);
4377 rc = stli_getportstruct(argp);
4381 rc = stli_getbrdstruct(argp);
4391 * Now handle the board specific ioctls. These all depend on the
4392 * minor number of the device they were called from.
4395 if (brdnr >= STL_MAXBRDS)
4397 brdp = stli_brds[brdnr];
4400 if (brdp->state == 0)
4410 rc = stli_startbrd(brdp);
4413 brdp->state &= ~BST_STARTED;
4416 brdp->state &= ~BST_STARTED;
4418 if (stli_shared == 0) {
4419 if (brdp->reenable != NULL)
4420 (* brdp->reenable)(brdp);
4431 static const struct tty_operations stli_ops = {
4433 .close = stli_close,
4434 .write = stli_write,
4435 .put_char = stli_putchar,
4436 .flush_chars = stli_flushchars,
4437 .write_room = stli_writeroom,
4438 .chars_in_buffer = stli_charsinbuffer,
4439 .ioctl = stli_ioctl,
4440 .set_termios = stli_settermios,
4441 .throttle = stli_throttle,
4442 .unthrottle = stli_unthrottle,
4444 .start = stli_start,
4445 .hangup = stli_hangup,
4446 .flush_buffer = stli_flushbuffer,
4447 .break_ctl = stli_breakctl,
4448 .wait_until_sent = stli_waituntilsent,
4449 .send_xchar = stli_sendxchar,
4450 .read_proc = stli_readproc,
4451 .tiocmget = stli_tiocmget,
4452 .tiocmset = stli_tiocmset,
4455 static const struct tty_port_operations stli_port_ops = {
4456 .carrier_raised = stli_carrier_raised,
4457 .raise_dtr_rts = stli_raise_dtr_rts,
4460 /*****************************************************************************/
4462 * Loadable module initialization stuff.
4465 static void istallion_cleanup_isa(void)
4467 struct stlibrd *brdp;
4470 for (j = 0; (j < stli_nrbrds); j++) {
4471 if ((brdp = stli_brds[j]) == NULL || (brdp->state & BST_PROBED))
4474 stli_cleanup_ports(brdp);
4476 iounmap(brdp->membase);
4477 if (brdp->iosize > 0)
4478 release_region(brdp->iobase, brdp->iosize);
4480 stli_brds[j] = NULL;
4484 static int __init istallion_module_init(void)
4489 printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion);
4491 spin_lock_init(&stli_lock);
4492 spin_lock_init(&brd_lock);
4494 stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL);
4495 if (!stli_txcookbuf) {
4496 printk(KERN_ERR "STALLION: failed to allocate memory "
4497 "(size=%d)\n", STLI_TXBUFSIZE);
4502 stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS);
4508 stli_serial->owner = THIS_MODULE;
4509 stli_serial->driver_name = stli_drvname;
4510 stli_serial->name = stli_serialname;
4511 stli_serial->major = STL_SERIALMAJOR;
4512 stli_serial->minor_start = 0;
4513 stli_serial->type = TTY_DRIVER_TYPE_SERIAL;
4514 stli_serial->subtype = SERIAL_TYPE_NORMAL;
4515 stli_serial->init_termios = stli_deftermios;
4516 stli_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
4517 tty_set_operations(stli_serial, &stli_ops);
4519 retval = tty_register_driver(stli_serial);
4521 printk(KERN_ERR "STALLION: failed to register serial driver\n");
4525 retval = stli_initbrds();
4530 * Set up a character driver for the shared memory region. We need this
4531 * to down load the slave code image. Also it is a useful debugging tool.
4533 retval = register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem);
4535 printk(KERN_ERR "STALLION: failed to register serial memory "
4540 istallion_class = class_create(THIS_MODULE, "staliomem");
4541 for (i = 0; i < 4; i++)
4542 device_create(istallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i),
4543 NULL, "staliomem%d", i);
4547 pci_unregister_driver(&stli_pcidriver);
4548 istallion_cleanup_isa();
4550 tty_unregister_driver(stli_serial);
4552 put_tty_driver(stli_serial);
4554 kfree(stli_txcookbuf);
4559 /*****************************************************************************/
4561 static void __exit istallion_module_exit(void)
4565 printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle,
4570 del_timer_sync(&stli_timerlist);
4573 unregister_chrdev(STL_SIOMEMMAJOR, "staliomem");
4575 for (j = 0; j < 4; j++)
4576 device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, j));
4577 class_destroy(istallion_class);
4579 pci_unregister_driver(&stli_pcidriver);
4580 istallion_cleanup_isa();
4582 tty_unregister_driver(stli_serial);
4583 put_tty_driver(stli_serial);
4585 kfree(stli_txcookbuf);
4588 module_init(istallion_module_init);
4589 module_exit(istallion_module_exit);