1 /*****************************************************************************/
4 * istallion.c -- stallion intelligent multiport serial driver.
6 * Copyright (C) 1996-1999 Stallion Technologies
7 * Copyright (C) 1994-1996 Greg Ungerer.
9 * This code is loosely based on the Linux serial driver, written by
10 * Linus Torvalds, Theodore T'so and others.
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
19 /*****************************************************************************/
21 #include <linux/module.h>
22 #include <linux/slab.h>
23 #include <linux/interrupt.h>
24 #include <linux/tty.h>
25 #include <linux/tty_flip.h>
26 #include <linux/serial.h>
27 #include <linux/cdk.h>
28 #include <linux/comstats.h>
29 #include <linux/istallion.h>
30 #include <linux/ioport.h>
31 #include <linux/delay.h>
32 #include <linux/init.h>
33 #include <linux/device.h>
34 #include <linux/wait.h>
35 #include <linux/eisa.h>
36 #include <linux/ctype.h>
39 #include <asm/uaccess.h>
41 #include <linux/pci.h>
43 /*****************************************************************************/
46 * Define different board types. Not all of the following board types
47 * are supported by this driver. But I will use the standard "assigned"
48 * board numbers. Currently supported boards are abbreviated as:
49 * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and
53 #define BRD_STALLION 1
55 #define BRD_ONBOARD2 3
57 #define BRD_ONBOARDE 7
63 #define BRD_BRUMBY BRD_BRUMBY4
66 * Define a configuration structure to hold the board configuration.
67 * Need to set this up in the code (for now) with the boards that are
68 * to be configured into the system. This is what needs to be modified
69 * when adding/removing/modifying boards. Each line entry in the
70 * stli_brdconf[] array is a board. Each line contains io/irq/memory
71 * ranges for that board (as well as what type of board it is).
73 * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },
74 * This line will configure an EasyConnection 8/64 at io address 2a0,
75 * and shared memory address of cc000. Multiple EasyConnection 8/64
76 * boards can share the same shared memory address space. No interrupt
77 * is required for this board type.
79 * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 },
80 * This line will configure an EasyConnection 8/64 EISA in slot 5 and
81 * shared memory address of 0x80000000 (2 GByte). Multiple
82 * EasyConnection 8/64 EISA boards can share the same shared memory
83 * address space. No interrupt is required for this board type.
85 * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 },
86 * This line will configure an ONboard (ISA type) at io address 240,
87 * and shared memory address of d0000. Multiple ONboards can share
88 * the same shared memory address space. No interrupt required.
90 * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 },
91 * This line will configure a Brumby board (any number of ports!) at
92 * io address 360 and shared memory address of c8000. All Brumby boards
93 * configured into a system must have their own separate io and memory
94 * addresses. No interrupt is required.
96 * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 },
97 * This line will configure an original Stallion board at io address 330
98 * and shared memory address d0000 (this would only be valid for a "V4.0"
99 * or Rev.O Stallion board). All Stallion boards configured into the
100 * system must have their own separate io and memory addresses. No
101 * interrupt is required.
108 unsigned long memaddr;
113 static unsigned int stli_nrbrds;
115 /* stli_lock must NOT be taken holding brd_lock */
116 static spinlock_t stli_lock; /* TTY logic lock */
117 static spinlock_t brd_lock; /* Board logic lock */
120 * There is some experimental EISA board detection code in this driver.
121 * By default it is disabled, but for those that want to try it out,
122 * then set the define below to be 1.
124 #define STLI_EISAPROBE 0
126 /*****************************************************************************/
129 * Define some important driver characteristics. Device major numbers
130 * allocated as per Linux Device Registry.
132 #ifndef STL_SIOMEMMAJOR
133 #define STL_SIOMEMMAJOR 28
135 #ifndef STL_SERIALMAJOR
136 #define STL_SERIALMAJOR 24
138 #ifndef STL_CALLOUTMAJOR
139 #define STL_CALLOUTMAJOR 25
142 /*****************************************************************************/
145 * Define our local driver identity first. Set up stuff to deal with
146 * all the local structures required by a serial tty driver.
148 static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver";
149 static char *stli_drvname = "istallion";
150 static char *stli_drvversion = "5.6.0";
151 static char *stli_serialname = "ttyE";
153 static struct tty_driver *stli_serial;
156 #define STLI_TXBUFSIZE 4096
159 * Use a fast local buffer for cooked characters. Typically a whole
160 * bunch of cooked characters come in for a port, 1 at a time. So we
161 * save those up into a local buffer, then write out the whole lot
162 * with a large memcpy. Just use 1 buffer for all ports, since its
163 * use it is only need for short periods of time by each port.
165 static char *stli_txcookbuf;
166 static int stli_txcooksize;
167 static int stli_txcookrealsize;
168 static struct tty_struct *stli_txcooktty;
171 * Define a local default termios struct. All ports will be created
172 * with this termios initially. Basically all it defines is a raw port
173 * at 9600 baud, 8 data bits, no parity, 1 stop bit.
175 static struct ktermios stli_deftermios = {
176 .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL),
183 * Define global stats structures. Not used often, and can be
184 * re-used for each stats call.
186 static comstats_t stli_comstats;
187 static combrd_t stli_brdstats;
188 static struct asystats stli_cdkstats;
190 /*****************************************************************************/
192 static DEFINE_MUTEX(stli_brdslock);
193 static struct stlibrd *stli_brds[STL_MAXBRDS];
195 static int stli_shared;
198 * Per board state flags. Used with the state field of the board struct.
199 * Not really much here... All we need to do is keep track of whether
200 * the board has been detected, and whether it is actually running a slave
203 #define BST_FOUND 0x1
204 #define BST_STARTED 0x2
205 #define BST_PROBED 0x4
208 * Define the set of port state flags. These are marked for internal
209 * state purposes only, usually to do with the state of communications
210 * with the slave. Most of them need to be updated atomically, so always
211 * use the bit setting operations (unless protected by cli/sti).
213 #define ST_INITIALIZING 1
219 #define ST_DOFLUSHRX 7
220 #define ST_DOFLUSHTX 8
223 #define ST_GETSIGS 11
226 * Define an array of board names as printable strings. Handy for
227 * referencing boards when printing trace and stuff.
229 static char *stli_brdnames[] = {
262 /*****************************************************************************/
265 * Define some string labels for arguments passed from the module
266 * load line. These allow for easy board definitions, and easy
267 * modification of the io, memory and irq resoucres.
270 static char *board0[8];
271 static char *board1[8];
272 static char *board2[8];
273 static char *board3[8];
275 static char **stli_brdsp[] = {
283 * Define a set of common board names, and types. This is used to
284 * parse any module arguments.
287 static struct stlibrdtype {
291 { "stallion", BRD_STALLION },
292 { "1", BRD_STALLION },
293 { "brumby", BRD_BRUMBY },
294 { "brumby4", BRD_BRUMBY },
295 { "brumby/4", BRD_BRUMBY },
296 { "brumby-4", BRD_BRUMBY },
297 { "brumby8", BRD_BRUMBY },
298 { "brumby/8", BRD_BRUMBY },
299 { "brumby-8", BRD_BRUMBY },
300 { "brumby16", BRD_BRUMBY },
301 { "brumby/16", BRD_BRUMBY },
302 { "brumby-16", BRD_BRUMBY },
304 { "onboard2", BRD_ONBOARD2 },
305 { "onboard-2", BRD_ONBOARD2 },
306 { "onboard/2", BRD_ONBOARD2 },
307 { "onboard-mc", BRD_ONBOARD2 },
308 { "onboard/mc", BRD_ONBOARD2 },
309 { "onboard-mca", BRD_ONBOARD2 },
310 { "onboard/mca", BRD_ONBOARD2 },
311 { "3", BRD_ONBOARD2 },
312 { "onboard", BRD_ONBOARD },
313 { "onboardat", BRD_ONBOARD },
314 { "4", BRD_ONBOARD },
315 { "onboarde", BRD_ONBOARDE },
316 { "onboard-e", BRD_ONBOARDE },
317 { "onboard/e", BRD_ONBOARDE },
318 { "onboard-ei", BRD_ONBOARDE },
319 { "onboard/ei", BRD_ONBOARDE },
320 { "7", BRD_ONBOARDE },
322 { "ecpat", BRD_ECP },
323 { "ec8/64", BRD_ECP },
324 { "ec8/64-at", BRD_ECP },
325 { "ec8/64-isa", BRD_ECP },
327 { "ecpe", BRD_ECPE },
328 { "ecpei", BRD_ECPE },
329 { "ec8/64-e", BRD_ECPE },
330 { "ec8/64-ei", BRD_ECPE },
332 { "ecpmc", BRD_ECPMC },
333 { "ec8/64-mc", BRD_ECPMC },
334 { "ec8/64-mca", BRD_ECPMC },
336 { "ecppci", BRD_ECPPCI },
337 { "ec/ra", BRD_ECPPCI },
338 { "ec/ra-pc", BRD_ECPPCI },
339 { "ec/ra-pci", BRD_ECPPCI },
340 { "29", BRD_ECPPCI },
344 * Define the module agruments.
346 MODULE_AUTHOR("Greg Ungerer");
347 MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver");
348 MODULE_LICENSE("GPL");
351 module_param_array(board0, charp, NULL, 0);
352 MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]");
353 module_param_array(board1, charp, NULL, 0);
354 MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]");
355 module_param_array(board2, charp, NULL, 0);
356 MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]");
357 module_param_array(board3, charp, NULL, 0);
358 MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]");
360 #if STLI_EISAPROBE != 0
362 * Set up a default memory address table for EISA board probing.
363 * The default addresses are all bellow 1Mbyte, which has to be the
364 * case anyway. They should be safe, since we only read values from
365 * them, and interrupts are disabled while we do it. If the higher
366 * memory support is compiled in then we also try probing around
367 * the 1Gb, 2Gb and 3Gb areas as well...
369 static unsigned long stli_eisamemprobeaddrs[] = {
370 0xc0000, 0xd0000, 0xe0000, 0xf0000,
371 0x80000000, 0x80010000, 0x80020000, 0x80030000,
372 0x40000000, 0x40010000, 0x40020000, 0x40030000,
373 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000,
374 0xff000000, 0xff010000, 0xff020000, 0xff030000,
377 static int stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs);
381 * Define the Stallion PCI vendor and device IDs.
383 #ifndef PCI_DEVICE_ID_ECRA
384 #define PCI_DEVICE_ID_ECRA 0x0004
387 static struct pci_device_id istallion_pci_tbl[] = {
388 { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA), },
391 MODULE_DEVICE_TABLE(pci, istallion_pci_tbl);
393 static struct pci_driver stli_pcidriver;
395 /*****************************************************************************/
398 * Hardware configuration info for ECP boards. These defines apply
399 * to the directly accessible io ports of the ECP. There is a set of
400 * defines for each ECP board type, ISA, EISA, MCA and PCI.
404 #define ECP_MEMSIZE (128 * 1024)
405 #define ECP_PCIMEMSIZE (256 * 1024)
407 #define ECP_ATPAGESIZE (4 * 1024)
408 #define ECP_MCPAGESIZE (4 * 1024)
409 #define ECP_EIPAGESIZE (64 * 1024)
410 #define ECP_PCIPAGESIZE (64 * 1024)
412 #define STL_EISAID 0x8c4e
415 * Important defines for the ISA class of ECP board.
418 #define ECP_ATCONFR 1
419 #define ECP_ATMEMAR 2
420 #define ECP_ATMEMPR 3
421 #define ECP_ATSTOP 0x1
422 #define ECP_ATINTENAB 0x10
423 #define ECP_ATENABLE 0x20
424 #define ECP_ATDISABLE 0x00
425 #define ECP_ATADDRMASK 0x3f000
426 #define ECP_ATADDRSHFT 12
429 * Important defines for the EISA class of ECP board.
432 #define ECP_EIMEMARL 1
433 #define ECP_EICONFR 2
434 #define ECP_EIMEMARH 3
435 #define ECP_EIENABLE 0x1
436 #define ECP_EIDISABLE 0x0
437 #define ECP_EISTOP 0x4
438 #define ECP_EIEDGE 0x00
439 #define ECP_EILEVEL 0x80
440 #define ECP_EIADDRMASKL 0x00ff0000
441 #define ECP_EIADDRSHFTL 16
442 #define ECP_EIADDRMASKH 0xff000000
443 #define ECP_EIADDRSHFTH 24
444 #define ECP_EIBRDENAB 0xc84
446 #define ECP_EISAID 0x4
449 * Important defines for the Micro-channel class of ECP board.
450 * (It has a lot in common with the ISA boards.)
453 #define ECP_MCCONFR 1
454 #define ECP_MCSTOP 0x20
455 #define ECP_MCENABLE 0x80
456 #define ECP_MCDISABLE 0x00
459 * Important defines for the PCI class of ECP board.
460 * (It has a lot in common with the other ECP boards.)
462 #define ECP_PCIIREG 0
463 #define ECP_PCICONFR 1
464 #define ECP_PCISTOP 0x01
467 * Hardware configuration info for ONboard and Brumby boards. These
468 * defines apply to the directly accessible io ports of these boards.
470 #define ONB_IOSIZE 16
471 #define ONB_MEMSIZE (64 * 1024)
472 #define ONB_ATPAGESIZE (64 * 1024)
473 #define ONB_MCPAGESIZE (64 * 1024)
474 #define ONB_EIMEMSIZE (128 * 1024)
475 #define ONB_EIPAGESIZE (64 * 1024)
478 * Important defines for the ISA class of ONboard board.
481 #define ONB_ATMEMAR 1
482 #define ONB_ATCONFR 2
483 #define ONB_ATSTOP 0x4
484 #define ONB_ATENABLE 0x01
485 #define ONB_ATDISABLE 0x00
486 #define ONB_ATADDRMASK 0xff0000
487 #define ONB_ATADDRSHFT 16
489 #define ONB_MEMENABLO 0
490 #define ONB_MEMENABHI 0x02
493 * Important defines for the EISA class of ONboard board.
496 #define ONB_EIMEMARL 1
497 #define ONB_EICONFR 2
498 #define ONB_EIMEMARH 3
499 #define ONB_EIENABLE 0x1
500 #define ONB_EIDISABLE 0x0
501 #define ONB_EISTOP 0x4
502 #define ONB_EIEDGE 0x00
503 #define ONB_EILEVEL 0x80
504 #define ONB_EIADDRMASKL 0x00ff0000
505 #define ONB_EIADDRSHFTL 16
506 #define ONB_EIADDRMASKH 0xff000000
507 #define ONB_EIADDRSHFTH 24
508 #define ONB_EIBRDENAB 0xc84
510 #define ONB_EISAID 0x1
513 * Important defines for the Brumby boards. They are pretty simple,
514 * there is not much that is programmably configurable.
516 #define BBY_IOSIZE 16
517 #define BBY_MEMSIZE (64 * 1024)
518 #define BBY_PAGESIZE (16 * 1024)
521 #define BBY_ATCONFR 1
522 #define BBY_ATSTOP 0x4
525 * Important defines for the Stallion boards. They are pretty simple,
526 * there is not much that is programmably configurable.
528 #define STAL_IOSIZE 16
529 #define STAL_MEMSIZE (64 * 1024)
530 #define STAL_PAGESIZE (64 * 1024)
533 * Define the set of status register values for EasyConnection panels.
534 * The signature will return with the status value for each panel. From
535 * this we can determine what is attached to the board - before we have
536 * actually down loaded any code to it.
538 #define ECH_PNLSTATUS 2
539 #define ECH_PNL16PORT 0x20
540 #define ECH_PNLIDMASK 0x07
541 #define ECH_PNLXPID 0x40
542 #define ECH_PNLINTRPEND 0x80
545 * Define some macros to do things to the board. Even those these boards
546 * are somewhat related there is often significantly different ways of
547 * doing some operation on it (like enable, paging, reset, etc). So each
548 * board class has a set of functions which do the commonly required
549 * operations. The macros below basically just call these functions,
550 * generally checking for a NULL function - which means that the board
551 * needs nothing done to it to achieve this operation!
553 #define EBRDINIT(brdp) \
554 if (brdp->init != NULL) \
557 #define EBRDENABLE(brdp) \
558 if (brdp->enable != NULL) \
559 (* brdp->enable)(brdp);
561 #define EBRDDISABLE(brdp) \
562 if (brdp->disable != NULL) \
563 (* brdp->disable)(brdp);
565 #define EBRDINTR(brdp) \
566 if (brdp->intr != NULL) \
567 (* brdp->intr)(brdp);
569 #define EBRDRESET(brdp) \
570 if (brdp->reset != NULL) \
571 (* brdp->reset)(brdp);
573 #define EBRDGETMEMPTR(brdp,offset) \
574 (* brdp->getmemptr)(brdp, offset, __LINE__)
577 * Define the maximal baud rate, and the default baud base for ports.
579 #define STL_MAXBAUD 460800
580 #define STL_BAUDBASE 115200
581 #define STL_CLOSEDELAY (5 * HZ / 10)
583 /*****************************************************************************/
586 * Define macros to extract a brd or port number from a minor number.
588 #define MINOR2BRD(min) (((min) & 0xc0) >> 6)
589 #define MINOR2PORT(min) ((min) & 0x3f)
591 /*****************************************************************************/
594 * Prototype all functions in this driver!
597 static int stli_parsebrd(struct stlconf *confp, char **argp);
598 static int stli_open(struct tty_struct *tty, struct file *filp);
599 static void stli_close(struct tty_struct *tty, struct file *filp);
600 static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count);
601 static void stli_putchar(struct tty_struct *tty, unsigned char ch);
602 static void stli_flushchars(struct tty_struct *tty);
603 static int stli_writeroom(struct tty_struct *tty);
604 static int stli_charsinbuffer(struct tty_struct *tty);
605 static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg);
606 static void stli_settermios(struct tty_struct *tty, struct ktermios *old);
607 static void stli_throttle(struct tty_struct *tty);
608 static void stli_unthrottle(struct tty_struct *tty);
609 static void stli_stop(struct tty_struct *tty);
610 static void stli_start(struct tty_struct *tty);
611 static void stli_flushbuffer(struct tty_struct *tty);
612 static void stli_breakctl(struct tty_struct *tty, int state);
613 static void stli_waituntilsent(struct tty_struct *tty, int timeout);
614 static void stli_sendxchar(struct tty_struct *tty, char ch);
615 static void stli_hangup(struct tty_struct *tty);
616 static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos);
618 static int stli_brdinit(struct stlibrd *brdp);
619 static int stli_startbrd(struct stlibrd *brdp);
620 static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp);
621 static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp);
622 static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg);
623 static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp);
624 static void stli_poll(unsigned long arg);
625 static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp);
626 static int stli_initopen(struct stlibrd *brdp, struct stliport *portp);
627 static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
628 static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
629 static int stli_waitcarrier(struct stlibrd *brdp, struct stliport *portp, struct file *filp);
630 static void stli_dohangup(struct work_struct *);
631 static int stli_setport(struct stliport *portp);
632 static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
633 static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
634 static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
635 static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp);
636 static void stli_mkasyport(struct stliport *portp, asyport_t *pp, struct ktermios *tiosp);
637 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts);
638 static long stli_mktiocm(unsigned long sigvalue);
639 static void stli_read(struct stlibrd *brdp, struct stliport *portp);
640 static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp);
641 static int stli_setserial(struct stliport *portp, struct serial_struct __user *sp);
642 static int stli_getbrdstats(combrd_t __user *bp);
643 static int stli_getportstats(struct stliport *portp, comstats_t __user *cp);
644 static int stli_portcmdstats(struct stliport *portp);
645 static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp);
646 static int stli_getportstruct(struct stliport __user *arg);
647 static int stli_getbrdstruct(struct stlibrd __user *arg);
648 static struct stlibrd *stli_allocbrd(void);
650 static void stli_ecpinit(struct stlibrd *brdp);
651 static void stli_ecpenable(struct stlibrd *brdp);
652 static void stli_ecpdisable(struct stlibrd *brdp);
653 static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
654 static void stli_ecpreset(struct stlibrd *brdp);
655 static void stli_ecpintr(struct stlibrd *brdp);
656 static void stli_ecpeiinit(struct stlibrd *brdp);
657 static void stli_ecpeienable(struct stlibrd *brdp);
658 static void stli_ecpeidisable(struct stlibrd *brdp);
659 static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
660 static void stli_ecpeireset(struct stlibrd *brdp);
661 static void stli_ecpmcenable(struct stlibrd *brdp);
662 static void stli_ecpmcdisable(struct stlibrd *brdp);
663 static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
664 static void stli_ecpmcreset(struct stlibrd *brdp);
665 static void stli_ecppciinit(struct stlibrd *brdp);
666 static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
667 static void stli_ecppcireset(struct stlibrd *brdp);
669 static void stli_onbinit(struct stlibrd *brdp);
670 static void stli_onbenable(struct stlibrd *brdp);
671 static void stli_onbdisable(struct stlibrd *brdp);
672 static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
673 static void stli_onbreset(struct stlibrd *brdp);
674 static void stli_onbeinit(struct stlibrd *brdp);
675 static void stli_onbeenable(struct stlibrd *brdp);
676 static void stli_onbedisable(struct stlibrd *brdp);
677 static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
678 static void stli_onbereset(struct stlibrd *brdp);
679 static void stli_bbyinit(struct stlibrd *brdp);
680 static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
681 static void stli_bbyreset(struct stlibrd *brdp);
682 static void stli_stalinit(struct stlibrd *brdp);
683 static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
684 static void stli_stalreset(struct stlibrd *brdp);
686 static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr);
688 static int stli_initecp(struct stlibrd *brdp);
689 static int stli_initonb(struct stlibrd *brdp);
690 #if STLI_EISAPROBE != 0
691 static int stli_eisamemprobe(struct stlibrd *brdp);
693 static int stli_initports(struct stlibrd *brdp);
695 /*****************************************************************************/
698 * Define the driver info for a user level shared memory device. This
699 * device will work sort of like the /dev/kmem device - except that it
700 * will give access to the shared memory on the Stallion intelligent
701 * board. This is also a very useful debugging tool.
703 static const struct file_operations stli_fsiomem = {
704 .owner = THIS_MODULE,
705 .read = stli_memread,
706 .write = stli_memwrite,
707 .ioctl = stli_memioctl,
710 /*****************************************************************************/
713 * Define a timer_list entry for our poll routine. The slave board
714 * is polled every so often to see if anything needs doing. This is
715 * much cheaper on host cpu than using interrupts. It turns out to
716 * not increase character latency by much either...
718 static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0);
720 static int stli_timeron;
723 * Define the calculation for the timeout routine.
725 #define STLI_TIMEOUT (jiffies + 1)
727 /*****************************************************************************/
729 static struct class *istallion_class;
731 static void stli_cleanup_ports(struct stlibrd *brdp)
733 struct stliport *portp;
736 for (j = 0; j < STL_MAXPORTS; j++) {
737 portp = brdp->ports[j];
739 if (portp->tty != NULL)
740 tty_hangup(portp->tty);
746 /*****************************************************************************/
749 * Parse the supplied argument string, into the board conf struct.
752 static int stli_parsebrd(struct stlconf *confp, char **argp)
757 if (argp[0] == NULL || *argp[0] == 0)
760 for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++)
763 for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) {
764 if (strcmp(stli_brdstr[i].name, argp[0]) == 0)
767 if (i == ARRAY_SIZE(stli_brdstr)) {
768 printk("STALLION: unknown board name, %s?\n", argp[0]);
772 confp->brdtype = stli_brdstr[i].type;
773 if (argp[1] != NULL && *argp[1] != 0)
774 confp->ioaddr1 = simple_strtoul(argp[1], NULL, 0);
775 if (argp[2] != NULL && *argp[2] != 0)
776 confp->memaddr = simple_strtoul(argp[2], NULL, 0);
780 /*****************************************************************************/
782 static int stli_open(struct tty_struct *tty, struct file *filp)
784 struct stlibrd *brdp;
785 struct stliport *portp;
786 unsigned int minordev, brdnr, portnr;
789 minordev = tty->index;
790 brdnr = MINOR2BRD(minordev);
791 if (brdnr >= stli_nrbrds)
793 brdp = stli_brds[brdnr];
796 if ((brdp->state & BST_STARTED) == 0)
798 portnr = MINOR2PORT(minordev);
799 if (portnr > brdp->nrports)
802 portp = brdp->ports[portnr];
805 if (portp->devnr < 1)
810 * Check if this port is in the middle of closing. If so then wait
811 * until it is closed then return error status based on flag settings.
812 * The sleep here does not need interrupt protection since the wakeup
813 * for it is done with the same context.
815 if (portp->flags & ASYNC_CLOSING) {
816 interruptible_sleep_on(&portp->close_wait);
817 if (portp->flags & ASYNC_HUP_NOTIFY)
823 * On the first open of the device setup the port hardware, and
824 * initialize the per port data structure. Since initializing the port
825 * requires several commands to the board we will need to wait for any
826 * other open that is already initializing the port.
829 tty->driver_data = portp;
832 wait_event_interruptible(portp->raw_wait,
833 !test_bit(ST_INITIALIZING, &portp->state));
834 if (signal_pending(current))
837 if ((portp->flags & ASYNC_INITIALIZED) == 0) {
838 set_bit(ST_INITIALIZING, &portp->state);
839 if ((rc = stli_initopen(brdp, portp)) >= 0) {
840 portp->flags |= ASYNC_INITIALIZED;
841 clear_bit(TTY_IO_ERROR, &tty->flags);
843 clear_bit(ST_INITIALIZING, &portp->state);
844 wake_up_interruptible(&portp->raw_wait);
850 * Check if this port is in the middle of closing. If so then wait
851 * until it is closed then return error status, based on flag settings.
852 * The sleep here does not need interrupt protection since the wakeup
853 * for it is done with the same context.
855 if (portp->flags & ASYNC_CLOSING) {
856 interruptible_sleep_on(&portp->close_wait);
857 if (portp->flags & ASYNC_HUP_NOTIFY)
863 * Based on type of open being done check if it can overlap with any
864 * previous opens still in effect. If we are a normal serial device
865 * then also we might have to wait for carrier.
867 if (!(filp->f_flags & O_NONBLOCK)) {
868 if ((rc = stli_waitcarrier(brdp, portp, filp)) != 0)
871 portp->flags |= ASYNC_NORMAL_ACTIVE;
875 /*****************************************************************************/
877 static void stli_close(struct tty_struct *tty, struct file *filp)
879 struct stlibrd *brdp;
880 struct stliport *portp;
883 portp = tty->driver_data;
887 spin_lock_irqsave(&stli_lock, flags);
888 if (tty_hung_up_p(filp)) {
889 spin_unlock_irqrestore(&stli_lock, flags);
892 if ((tty->count == 1) && (portp->refcount != 1))
894 if (portp->refcount-- > 1) {
895 spin_unlock_irqrestore(&stli_lock, flags);
899 portp->flags |= ASYNC_CLOSING;
902 * May want to wait for data to drain before closing. The BUSY flag
903 * keeps track of whether we are still transmitting or not. It is
904 * updated by messages from the slave - indicating when all chars
905 * really have drained.
907 if (tty == stli_txcooktty)
908 stli_flushchars(tty);
910 spin_unlock_irqrestore(&stli_lock, flags);
912 if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE)
913 tty_wait_until_sent(tty, portp->closing_wait);
915 portp->flags &= ~ASYNC_INITIALIZED;
916 brdp = stli_brds[portp->brdnr];
917 stli_rawclose(brdp, portp, 0, 0);
918 if (tty->termios->c_cflag & HUPCL) {
919 stli_mkasysigs(&portp->asig, 0, 0);
920 if (test_bit(ST_CMDING, &portp->state))
921 set_bit(ST_DOSIGS, &portp->state);
923 stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig,
924 sizeof(asysigs_t), 0);
926 clear_bit(ST_TXBUSY, &portp->state);
927 clear_bit(ST_RXSTOP, &portp->state);
928 set_bit(TTY_IO_ERROR, &tty->flags);
929 if (tty->ldisc.flush_buffer)
930 (tty->ldisc.flush_buffer)(tty);
931 set_bit(ST_DOFLUSHRX, &portp->state);
932 stli_flushbuffer(tty);
937 if (portp->openwaitcnt) {
938 if (portp->close_delay)
939 msleep_interruptible(jiffies_to_msecs(portp->close_delay));
940 wake_up_interruptible(&portp->open_wait);
943 portp->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
944 wake_up_interruptible(&portp->close_wait);
947 /*****************************************************************************/
950 * Carry out first open operations on a port. This involves a number of
951 * commands to be sent to the slave. We need to open the port, set the
952 * notification events, set the initial port settings, get and set the
953 * initial signal values. We sleep and wait in between each one. But
954 * this still all happens pretty quickly.
957 static int stli_initopen(struct stlibrd *brdp, struct stliport *portp)
959 struct tty_struct *tty;
964 if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0)
967 memset(&nt, 0, sizeof(asynotify_t));
968 nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK);
970 if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt,
971 sizeof(asynotify_t), 0)) < 0)
977 stli_mkasyport(portp, &aport, tty->termios);
978 if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport,
979 sizeof(asyport_t), 0)) < 0)
982 set_bit(ST_GETSIGS, &portp->state);
983 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig,
984 sizeof(asysigs_t), 1)) < 0)
986 if (test_and_clear_bit(ST_GETSIGS, &portp->state))
987 portp->sigs = stli_mktiocm(portp->asig.sigvalue);
988 stli_mkasysigs(&portp->asig, 1, 1);
989 if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
990 sizeof(asysigs_t), 0)) < 0)
996 /*****************************************************************************/
999 * Send an open message to the slave. This will sleep waiting for the
1000 * acknowledgement, so must have user context. We need to co-ordinate
1001 * with close events here, since we don't want open and close events
1005 static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
1007 cdkhdr_t __iomem *hdrp;
1008 cdkctrl_t __iomem *cp;
1009 unsigned char __iomem *bits;
1010 unsigned long flags;
1014 * Send a message to the slave to open this port.
1018 * Slave is already closing this port. This can happen if a hangup
1019 * occurs on this port. So we must wait until it is complete. The
1020 * order of opens and closes may not be preserved across shared
1021 * memory, so we must wait until it is complete.
1023 wait_event_interruptible(portp->raw_wait,
1024 !test_bit(ST_CLOSING, &portp->state));
1025 if (signal_pending(current)) {
1026 return -ERESTARTSYS;
1030 * Everything is ready now, so write the open message into shared
1031 * memory. Once the message is in set the service bits to say that
1032 * this port wants service.
1034 spin_lock_irqsave(&brd_lock, flags);
1036 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1037 writel(arg, &cp->openarg);
1038 writeb(1, &cp->open);
1039 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1040 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1042 writeb(readb(bits) | portp->portbit, bits);
1046 spin_unlock_irqrestore(&brd_lock, flags);
1051 * Slave is in action, so now we must wait for the open acknowledgment
1055 set_bit(ST_OPENING, &portp->state);
1056 spin_unlock_irqrestore(&brd_lock, flags);
1058 wait_event_interruptible(portp->raw_wait,
1059 !test_bit(ST_OPENING, &portp->state));
1060 if (signal_pending(current))
1063 if ((rc == 0) && (portp->rc != 0))
1068 /*****************************************************************************/
1071 * Send a close message to the slave. Normally this will sleep waiting
1072 * for the acknowledgement, but if wait parameter is 0 it will not. If
1073 * wait is true then must have user context (to sleep).
1076 static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
1078 cdkhdr_t __iomem *hdrp;
1079 cdkctrl_t __iomem *cp;
1080 unsigned char __iomem *bits;
1081 unsigned long flags;
1085 * Slave is already closing this port. This can happen if a hangup
1086 * occurs on this port.
1089 wait_event_interruptible(portp->raw_wait,
1090 !test_bit(ST_CLOSING, &portp->state));
1091 if (signal_pending(current)) {
1092 return -ERESTARTSYS;
1097 * Write the close command into shared memory.
1099 spin_lock_irqsave(&brd_lock, flags);
1101 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1102 writel(arg, &cp->closearg);
1103 writeb(1, &cp->close);
1104 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1105 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1107 writeb(readb(bits) |portp->portbit, bits);
1110 set_bit(ST_CLOSING, &portp->state);
1111 spin_unlock_irqrestore(&brd_lock, flags);
1117 * Slave is in action, so now we must wait for the open acknowledgment
1121 wait_event_interruptible(portp->raw_wait,
1122 !test_bit(ST_CLOSING, &portp->state));
1123 if (signal_pending(current))
1126 if ((rc == 0) && (portp->rc != 0))
1131 /*****************************************************************************/
1134 * Send a command to the slave and wait for the response. This must
1135 * have user context (it sleeps). This routine is generic in that it
1136 * can send any type of command. Its purpose is to wait for that command
1137 * to complete (as opposed to initiating the command then returning).
1140 static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
1142 wait_event_interruptible(portp->raw_wait,
1143 !test_bit(ST_CMDING, &portp->state));
1144 if (signal_pending(current))
1145 return -ERESTARTSYS;
1147 stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
1149 wait_event_interruptible(portp->raw_wait,
1150 !test_bit(ST_CMDING, &portp->state));
1151 if (signal_pending(current))
1152 return -ERESTARTSYS;
1159 /*****************************************************************************/
1162 * Send the termios settings for this port to the slave. This sleeps
1163 * waiting for the command to complete - so must have user context.
1166 static int stli_setport(struct stliport *portp)
1168 struct stlibrd *brdp;
1173 if (portp->tty == NULL)
1175 if (portp->brdnr >= stli_nrbrds)
1177 brdp = stli_brds[portp->brdnr];
1181 stli_mkasyport(portp, &aport, portp->tty->termios);
1182 return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0));
1185 /*****************************************************************************/
1188 * Possibly need to wait for carrier (DCD signal) to come high. Say
1189 * maybe because if we are clocal then we don't need to wait...
1192 static int stli_waitcarrier(struct stlibrd *brdp, struct stliport *portp, struct file *filp)
1194 unsigned long flags;
1200 if (portp->tty->termios->c_cflag & CLOCAL)
1203 spin_lock_irqsave(&stli_lock, flags);
1204 portp->openwaitcnt++;
1205 if (! tty_hung_up_p(filp))
1207 spin_unlock_irqrestore(&stli_lock, flags);
1210 stli_mkasysigs(&portp->asig, 1, 1);
1211 if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS,
1212 &portp->asig, sizeof(asysigs_t), 0)) < 0)
1214 if (tty_hung_up_p(filp) ||
1215 ((portp->flags & ASYNC_INITIALIZED) == 0)) {
1216 if (portp->flags & ASYNC_HUP_NOTIFY)
1222 if (((portp->flags & ASYNC_CLOSING) == 0) &&
1223 (doclocal || (portp->sigs & TIOCM_CD))) {
1226 if (signal_pending(current)) {
1230 interruptible_sleep_on(&portp->open_wait);
1233 spin_lock_irqsave(&stli_lock, flags);
1234 if (! tty_hung_up_p(filp))
1236 portp->openwaitcnt--;
1237 spin_unlock_irqrestore(&stli_lock, flags);
1242 /*****************************************************************************/
1245 * Write routine. Take the data and put it in the shared memory ring
1246 * queue. If port is not already sending chars then need to mark the
1247 * service bits for this port.
1250 static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count)
1252 cdkasy_t __iomem *ap;
1253 cdkhdr_t __iomem *hdrp;
1254 unsigned char __iomem *bits;
1255 unsigned char __iomem *shbuf;
1256 unsigned char *chbuf;
1257 struct stliport *portp;
1258 struct stlibrd *brdp;
1259 unsigned int len, stlen, head, tail, size;
1260 unsigned long flags;
1262 if (tty == stli_txcooktty)
1263 stli_flushchars(tty);
1264 portp = tty->driver_data;
1267 if (portp->brdnr >= stli_nrbrds)
1269 brdp = stli_brds[portp->brdnr];
1272 chbuf = (unsigned char *) buf;
1275 * All data is now local, shove as much as possible into shared memory.
1277 spin_lock_irqsave(&brd_lock, flags);
1279 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1280 head = (unsigned int) readw(&ap->txq.head);
1281 tail = (unsigned int) readw(&ap->txq.tail);
1282 if (tail != ((unsigned int) readw(&ap->txq.tail)))
1283 tail = (unsigned int) readw(&ap->txq.tail);
1284 size = portp->txsize;
1286 len = size - (head - tail) - 1;
1287 stlen = size - head;
1289 len = tail - head - 1;
1293 len = min(len, (unsigned int)count);
1295 shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset);
1298 stlen = min(len, stlen);
1299 memcpy_toio(shbuf + head, chbuf, stlen);
1310 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1311 writew(head, &ap->txq.head);
1312 if (test_bit(ST_TXBUSY, &portp->state)) {
1313 if (readl(&ap->changed.data) & DT_TXEMPTY)
1314 writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
1316 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1317 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1319 writeb(readb(bits) | portp->portbit, bits);
1320 set_bit(ST_TXBUSY, &portp->state);
1322 spin_unlock_irqrestore(&brd_lock, flags);
1327 /*****************************************************************************/
1330 * Output a single character. We put it into a temporary local buffer
1331 * (for speed) then write out that buffer when the flushchars routine
1332 * is called. There is a safety catch here so that if some other port
1333 * writes chars before the current buffer has been, then we write them
1334 * first them do the new ports.
1337 static void stli_putchar(struct tty_struct *tty, unsigned char ch)
1339 if (tty != stli_txcooktty) {
1340 if (stli_txcooktty != NULL)
1341 stli_flushchars(stli_txcooktty);
1342 stli_txcooktty = tty;
1345 stli_txcookbuf[stli_txcooksize++] = ch;
1348 /*****************************************************************************/
1351 * Transfer characters from the local TX cooking buffer to the board.
1352 * We sort of ignore the tty that gets passed in here. We rely on the
1353 * info stored with the TX cook buffer to tell us which port to flush
1354 * the data on. In any case we clean out the TX cook buffer, for re-use
1358 static void stli_flushchars(struct tty_struct *tty)
1360 cdkhdr_t __iomem *hdrp;
1361 unsigned char __iomem *bits;
1362 cdkasy_t __iomem *ap;
1363 struct tty_struct *cooktty;
1364 struct stliport *portp;
1365 struct stlibrd *brdp;
1366 unsigned int len, stlen, head, tail, size, count, cooksize;
1368 unsigned char __iomem *shbuf;
1369 unsigned long flags;
1371 cooksize = stli_txcooksize;
1372 cooktty = stli_txcooktty;
1373 stli_txcooksize = 0;
1374 stli_txcookrealsize = 0;
1375 stli_txcooktty = NULL;
1379 if (cooktty == NULL)
1386 portp = tty->driver_data;
1389 if (portp->brdnr >= stli_nrbrds)
1391 brdp = stli_brds[portp->brdnr];
1395 spin_lock_irqsave(&brd_lock, flags);
1398 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1399 head = (unsigned int) readw(&ap->txq.head);
1400 tail = (unsigned int) readw(&ap->txq.tail);
1401 if (tail != ((unsigned int) readw(&ap->txq.tail)))
1402 tail = (unsigned int) readw(&ap->txq.tail);
1403 size = portp->txsize;
1405 len = size - (head - tail) - 1;
1406 stlen = size - head;
1408 len = tail - head - 1;
1412 len = min(len, cooksize);
1414 shbuf = EBRDGETMEMPTR(brdp, portp->txoffset);
1415 buf = stli_txcookbuf;
1418 stlen = min(len, stlen);
1419 memcpy_toio(shbuf + head, buf, stlen);
1430 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1431 writew(head, &ap->txq.head);
1433 if (test_bit(ST_TXBUSY, &portp->state)) {
1434 if (readl(&ap->changed.data) & DT_TXEMPTY)
1435 writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
1437 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1438 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1440 writeb(readb(bits) | portp->portbit, bits);
1441 set_bit(ST_TXBUSY, &portp->state);
1444 spin_unlock_irqrestore(&brd_lock, flags);
1447 /*****************************************************************************/
1449 static int stli_writeroom(struct tty_struct *tty)
1451 cdkasyrq_t __iomem *rp;
1452 struct stliport *portp;
1453 struct stlibrd *brdp;
1454 unsigned int head, tail, len;
1455 unsigned long flags;
1457 if (tty == stli_txcooktty) {
1458 if (stli_txcookrealsize != 0) {
1459 len = stli_txcookrealsize - stli_txcooksize;
1464 portp = tty->driver_data;
1467 if (portp->brdnr >= stli_nrbrds)
1469 brdp = stli_brds[portp->brdnr];
1473 spin_lock_irqsave(&brd_lock, flags);
1475 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1476 head = (unsigned int) readw(&rp->head);
1477 tail = (unsigned int) readw(&rp->tail);
1478 if (tail != ((unsigned int) readw(&rp->tail)))
1479 tail = (unsigned int) readw(&rp->tail);
1480 len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head);
1483 spin_unlock_irqrestore(&brd_lock, flags);
1485 if (tty == stli_txcooktty) {
1486 stli_txcookrealsize = len;
1487 len -= stli_txcooksize;
1492 /*****************************************************************************/
1495 * Return the number of characters in the transmit buffer. Normally we
1496 * will return the number of chars in the shared memory ring queue.
1497 * We need to kludge around the case where the shared memory buffer is
1498 * empty but not all characters have drained yet, for this case just
1499 * return that there is 1 character in the buffer!
1502 static int stli_charsinbuffer(struct tty_struct *tty)
1504 cdkasyrq_t __iomem *rp;
1505 struct stliport *portp;
1506 struct stlibrd *brdp;
1507 unsigned int head, tail, len;
1508 unsigned long flags;
1510 if (tty == stli_txcooktty)
1511 stli_flushchars(tty);
1512 portp = tty->driver_data;
1515 if (portp->brdnr >= stli_nrbrds)
1517 brdp = stli_brds[portp->brdnr];
1521 spin_lock_irqsave(&brd_lock, flags);
1523 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1524 head = (unsigned int) readw(&rp->head);
1525 tail = (unsigned int) readw(&rp->tail);
1526 if (tail != ((unsigned int) readw(&rp->tail)))
1527 tail = (unsigned int) readw(&rp->tail);
1528 len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head));
1529 if ((len == 0) && test_bit(ST_TXBUSY, &portp->state))
1532 spin_unlock_irqrestore(&brd_lock, flags);
1537 /*****************************************************************************/
1540 * Generate the serial struct info.
1543 static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp)
1545 struct serial_struct sio;
1546 struct stlibrd *brdp;
1548 memset(&sio, 0, sizeof(struct serial_struct));
1549 sio.type = PORT_UNKNOWN;
1550 sio.line = portp->portnr;
1552 sio.flags = portp->flags;
1553 sio.baud_base = portp->baud_base;
1554 sio.close_delay = portp->close_delay;
1555 sio.closing_wait = portp->closing_wait;
1556 sio.custom_divisor = portp->custom_divisor;
1557 sio.xmit_fifo_size = 0;
1560 brdp = stli_brds[portp->brdnr];
1562 sio.port = brdp->iobase;
1564 return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ?
1568 /*****************************************************************************/
1571 * Set port according to the serial struct info.
1572 * At this point we do not do any auto-configure stuff, so we will
1573 * just quietly ignore any requests to change irq, etc.
1576 static int stli_setserial(struct stliport *portp, struct serial_struct __user *sp)
1578 struct serial_struct sio;
1581 if (copy_from_user(&sio, sp, sizeof(struct serial_struct)))
1583 if (!capable(CAP_SYS_ADMIN)) {
1584 if ((sio.baud_base != portp->baud_base) ||
1585 (sio.close_delay != portp->close_delay) ||
1586 ((sio.flags & ~ASYNC_USR_MASK) !=
1587 (portp->flags & ~ASYNC_USR_MASK)))
1591 portp->flags = (portp->flags & ~ASYNC_USR_MASK) |
1592 (sio.flags & ASYNC_USR_MASK);
1593 portp->baud_base = sio.baud_base;
1594 portp->close_delay = sio.close_delay;
1595 portp->closing_wait = sio.closing_wait;
1596 portp->custom_divisor = sio.custom_divisor;
1598 if ((rc = stli_setport(portp)) < 0)
1603 /*****************************************************************************/
1605 static int stli_tiocmget(struct tty_struct *tty, struct file *file)
1607 struct stliport *portp = tty->driver_data;
1608 struct stlibrd *brdp;
1613 if (portp->brdnr >= stli_nrbrds)
1615 brdp = stli_brds[portp->brdnr];
1618 if (tty->flags & (1 << TTY_IO_ERROR))
1621 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS,
1622 &portp->asig, sizeof(asysigs_t), 1)) < 0)
1625 return stli_mktiocm(portp->asig.sigvalue);
1628 static int stli_tiocmset(struct tty_struct *tty, struct file *file,
1629 unsigned int set, unsigned int clear)
1631 struct stliport *portp = tty->driver_data;
1632 struct stlibrd *brdp;
1633 int rts = -1, dtr = -1;
1637 if (portp->brdnr >= stli_nrbrds)
1639 brdp = stli_brds[portp->brdnr];
1642 if (tty->flags & (1 << TTY_IO_ERROR))
1645 if (set & TIOCM_RTS)
1647 if (set & TIOCM_DTR)
1649 if (clear & TIOCM_RTS)
1651 if (clear & TIOCM_DTR)
1654 stli_mkasysigs(&portp->asig, dtr, rts);
1656 return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1657 sizeof(asysigs_t), 0);
1660 static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg)
1662 struct stliport *portp;
1663 struct stlibrd *brdp;
1666 void __user *argp = (void __user *)arg;
1668 portp = tty->driver_data;
1671 if (portp->brdnr >= stli_nrbrds)
1673 brdp = stli_brds[portp->brdnr];
1677 if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
1678 (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) {
1679 if (tty->flags & (1 << TTY_IO_ERROR))
1687 rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0),
1688 (unsigned __user *) arg);
1691 if ((rc = get_user(ival, (unsigned __user *) arg)) == 0)
1692 tty->termios->c_cflag =
1693 (tty->termios->c_cflag & ~CLOCAL) |
1694 (ival ? CLOCAL : 0);
1697 rc = stli_getserial(portp, argp);
1700 rc = stli_setserial(portp, argp);
1703 rc = put_user(portp->pflag, (unsigned __user *)argp);
1706 if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0)
1707 stli_setport(portp);
1709 case COM_GETPORTSTATS:
1710 rc = stli_getportstats(portp, argp);
1712 case COM_CLRPORTSTATS:
1713 rc = stli_clrportstats(portp, argp);
1719 case TIOCSERGSTRUCT:
1720 case TIOCSERGETMULTI:
1721 case TIOCSERSETMULTI:
1730 /*****************************************************************************/
1733 * This routine assumes that we have user context and can sleep.
1734 * Looks like it is true for the current ttys implementation..!!
1737 static void stli_settermios(struct tty_struct *tty, struct ktermios *old)
1739 struct stliport *portp;
1740 struct stlibrd *brdp;
1741 struct ktermios *tiosp;
1746 portp = tty->driver_data;
1749 if (portp->brdnr >= stli_nrbrds)
1751 brdp = stli_brds[portp->brdnr];
1755 tiosp = tty->termios;
1756 if ((tiosp->c_cflag == old->c_cflag) &&
1757 (tiosp->c_iflag == old->c_iflag))
1760 stli_mkasyport(portp, &aport, tiosp);
1761 stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0);
1762 stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1);
1763 stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1764 sizeof(asysigs_t), 0);
1765 if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0))
1766 tty->hw_stopped = 0;
1767 if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL))
1768 wake_up_interruptible(&portp->open_wait);
1771 /*****************************************************************************/
1774 * Attempt to flow control who ever is sending us data. We won't really
1775 * do any flow control action here. We can't directly, and even if we
1776 * wanted to we would have to send a command to the slave. The slave
1777 * knows how to flow control, and will do so when its buffers reach its
1778 * internal high water marks. So what we will do is set a local state
1779 * bit that will stop us sending any RX data up from the poll routine
1780 * (which is the place where RX data from the slave is handled).
1783 static void stli_throttle(struct tty_struct *tty)
1785 struct stliport *portp = tty->driver_data;
1788 set_bit(ST_RXSTOP, &portp->state);
1791 /*****************************************************************************/
1794 * Unflow control the device sending us data... That means that all
1795 * we have to do is clear the RXSTOP state bit. The next poll call
1796 * will then be able to pass the RX data back up.
1799 static void stli_unthrottle(struct tty_struct *tty)
1801 struct stliport *portp = tty->driver_data;
1804 clear_bit(ST_RXSTOP, &portp->state);
1807 /*****************************************************************************/
1810 * Stop the transmitter.
1813 static void stli_stop(struct tty_struct *tty)
1817 /*****************************************************************************/
1820 * Start the transmitter again.
1823 static void stli_start(struct tty_struct *tty)
1827 /*****************************************************************************/
1830 * Scheduler called hang up routine. This is called from the scheduler,
1831 * not direct from the driver "poll" routine. We can't call it there
1832 * since the real local hangup code will enable/disable the board and
1833 * other things that we can't do while handling the poll. Much easier
1834 * to deal with it some time later (don't really care when, hangups
1835 * aren't that time critical).
1838 static void stli_dohangup(struct work_struct *ugly_api)
1840 struct stliport *portp = container_of(ugly_api, struct stliport, tqhangup);
1841 if (portp->tty != NULL) {
1842 tty_hangup(portp->tty);
1846 /*****************************************************************************/
1849 * Hangup this port. This is pretty much like closing the port, only
1850 * a little more brutal. No waiting for data to drain. Shutdown the
1851 * port and maybe drop signals. This is rather tricky really. We want
1852 * to close the port as well.
1855 static void stli_hangup(struct tty_struct *tty)
1857 struct stliport *portp;
1858 struct stlibrd *brdp;
1859 unsigned long flags;
1861 portp = tty->driver_data;
1864 if (portp->brdnr >= stli_nrbrds)
1866 brdp = stli_brds[portp->brdnr];
1870 portp->flags &= ~ASYNC_INITIALIZED;
1872 if (!test_bit(ST_CLOSING, &portp->state))
1873 stli_rawclose(brdp, portp, 0, 0);
1875 spin_lock_irqsave(&stli_lock, flags);
1876 if (tty->termios->c_cflag & HUPCL) {
1877 stli_mkasysigs(&portp->asig, 0, 0);
1878 if (test_bit(ST_CMDING, &portp->state)) {
1879 set_bit(ST_DOSIGS, &portp->state);
1880 set_bit(ST_DOFLUSHTX, &portp->state);
1881 set_bit(ST_DOFLUSHRX, &portp->state);
1883 stli_sendcmd(brdp, portp, A_SETSIGNALSF,
1884 &portp->asig, sizeof(asysigs_t), 0);
1888 clear_bit(ST_TXBUSY, &portp->state);
1889 clear_bit(ST_RXSTOP, &portp->state);
1890 set_bit(TTY_IO_ERROR, &tty->flags);
1892 portp->flags &= ~ASYNC_NORMAL_ACTIVE;
1893 portp->refcount = 0;
1894 spin_unlock_irqrestore(&stli_lock, flags);
1896 wake_up_interruptible(&portp->open_wait);
1899 /*****************************************************************************/
1902 * Flush characters from the lower buffer. We may not have user context
1903 * so we cannot sleep waiting for it to complete. Also we need to check
1904 * if there is chars for this port in the TX cook buffer, and flush them
1908 static void stli_flushbuffer(struct tty_struct *tty)
1910 struct stliport *portp;
1911 struct stlibrd *brdp;
1912 unsigned long ftype, flags;
1914 portp = tty->driver_data;
1917 if (portp->brdnr >= stli_nrbrds)
1919 brdp = stli_brds[portp->brdnr];
1923 spin_lock_irqsave(&brd_lock, flags);
1924 if (tty == stli_txcooktty) {
1925 stli_txcooktty = NULL;
1926 stli_txcooksize = 0;
1927 stli_txcookrealsize = 0;
1929 if (test_bit(ST_CMDING, &portp->state)) {
1930 set_bit(ST_DOFLUSHTX, &portp->state);
1933 if (test_bit(ST_DOFLUSHRX, &portp->state)) {
1935 clear_bit(ST_DOFLUSHRX, &portp->state);
1937 __stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0);
1939 spin_unlock_irqrestore(&brd_lock, flags);
1943 /*****************************************************************************/
1945 static void stli_breakctl(struct tty_struct *tty, int state)
1947 struct stlibrd *brdp;
1948 struct stliport *portp;
1951 portp = tty->driver_data;
1954 if (portp->brdnr >= stli_nrbrds)
1956 brdp = stli_brds[portp->brdnr];
1960 arg = (state == -1) ? BREAKON : BREAKOFF;
1961 stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0);
1964 /*****************************************************************************/
1966 static void stli_waituntilsent(struct tty_struct *tty, int timeout)
1968 struct stliport *portp;
1973 portp = tty->driver_data;
1979 tend = jiffies + timeout;
1981 while (test_bit(ST_TXBUSY, &portp->state)) {
1982 if (signal_pending(current))
1984 msleep_interruptible(20);
1985 if (time_after_eq(jiffies, tend))
1990 /*****************************************************************************/
1992 static void stli_sendxchar(struct tty_struct *tty, char ch)
1994 struct stlibrd *brdp;
1995 struct stliport *portp;
1998 portp = tty->driver_data;
2001 if (portp->brdnr >= stli_nrbrds)
2003 brdp = stli_brds[portp->brdnr];
2007 memset(&actrl, 0, sizeof(asyctrl_t));
2008 if (ch == STOP_CHAR(tty)) {
2009 actrl.rxctrl = CT_STOPFLOW;
2010 } else if (ch == START_CHAR(tty)) {
2011 actrl.rxctrl = CT_STARTFLOW;
2013 actrl.txctrl = CT_SENDCHR;
2016 stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
2019 /*****************************************************************************/
2024 * Format info for a specified port. The line is deliberately limited
2025 * to 80 characters. (If it is too long it will be truncated, if too
2026 * short then padded with spaces).
2029 static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos)
2034 rc = stli_portcmdstats(portp);
2037 if (brdp->state & BST_STARTED) {
2038 switch (stli_comstats.hwid) {
2039 case 0: uart = "2681"; break;
2040 case 1: uart = "SC26198"; break;
2041 default:uart = "CD1400"; break;
2046 sp += sprintf(sp, "%d: uart:%s ", portnr, uart);
2048 if ((brdp->state & BST_STARTED) && (rc >= 0)) {
2049 sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal,
2050 (int) stli_comstats.rxtotal);
2052 if (stli_comstats.rxframing)
2053 sp += sprintf(sp, " fe:%d",
2054 (int) stli_comstats.rxframing);
2055 if (stli_comstats.rxparity)
2056 sp += sprintf(sp, " pe:%d",
2057 (int) stli_comstats.rxparity);
2058 if (stli_comstats.rxbreaks)
2059 sp += sprintf(sp, " brk:%d",
2060 (int) stli_comstats.rxbreaks);
2061 if (stli_comstats.rxoverrun)
2062 sp += sprintf(sp, " oe:%d",
2063 (int) stli_comstats.rxoverrun);
2065 cnt = sprintf(sp, "%s%s%s%s%s ",
2066 (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "",
2067 (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "",
2068 (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "",
2069 (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "",
2070 (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : "");
2075 for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++)
2078 pos[(MAXLINE - 2)] = '+';
2079 pos[(MAXLINE - 1)] = '\n';
2084 /*****************************************************************************/
2087 * Port info, read from the /proc file system.
2090 static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data)
2092 struct stlibrd *brdp;
2093 struct stliport *portp;
2094 unsigned int brdnr, portnr, totalport;
2103 pos += sprintf(pos, "%s: version %s", stli_drvtitle,
2105 while (pos < (page + MAXLINE - 1))
2112 * We scan through for each board, panel and port. The offset is
2113 * calculated on the fly, and irrelevant ports are skipped.
2115 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
2116 brdp = stli_brds[brdnr];
2119 if (brdp->state == 0)
2122 maxoff = curoff + (brdp->nrports * MAXLINE);
2123 if (off >= maxoff) {
2128 totalport = brdnr * STL_MAXPORTS;
2129 for (portnr = 0; (portnr < brdp->nrports); portnr++,
2131 portp = brdp->ports[portnr];
2134 if (off >= (curoff += MAXLINE))
2136 if ((pos - page + MAXLINE) > count)
2138 pos += stli_portinfo(brdp, portp, totalport, pos);
2149 /*****************************************************************************/
2152 * Generic send command routine. This will send a message to the slave,
2153 * of the specified type with the specified argument. Must be very
2154 * careful of data that will be copied out from shared memory -
2155 * containing command results. The command completion is all done from
2156 * a poll routine that does not have user context. Therefore you cannot
2157 * copy back directly into user space, or to the kernel stack of a
2158 * process. This routine does not sleep, so can be called from anywhere.
2160 * The caller must hold the brd_lock (see also stli_sendcmd the usual
2164 static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
2166 cdkhdr_t __iomem *hdrp;
2167 cdkctrl_t __iomem *cp;
2168 unsigned char __iomem *bits;
2169 unsigned long flags;
2171 spin_lock_irqsave(&brd_lock, flags);
2173 if (test_bit(ST_CMDING, &portp->state)) {
2174 printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n",
2176 spin_unlock_irqrestore(&brd_lock, flags);
2181 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
2183 memcpy_toio((void __iomem *) &(cp->args[0]), arg, size);
2186 portp->argsize = size;
2189 writel(0, &cp->status);
2190 writel(cmd, &cp->cmd);
2191 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2192 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
2194 writeb(readb(bits) | portp->portbit, bits);
2195 set_bit(ST_CMDING, &portp->state);
2197 spin_unlock_irqrestore(&brd_lock, flags);
2200 static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
2202 unsigned long flags;
2204 spin_lock_irqsave(&brd_lock, flags);
2205 __stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
2206 spin_unlock_irqrestore(&brd_lock, flags);
2209 /*****************************************************************************/
2212 * Read data from shared memory. This assumes that the shared memory
2213 * is enabled and that interrupts are off. Basically we just empty out
2214 * the shared memory buffer into the tty buffer. Must be careful to
2215 * handle the case where we fill up the tty buffer, but still have
2216 * more chars to unload.
2219 static void stli_read(struct stlibrd *brdp, struct stliport *portp)
2221 cdkasyrq_t __iomem *rp;
2222 char __iomem *shbuf;
2223 struct tty_struct *tty;
2224 unsigned int head, tail, size;
2225 unsigned int len, stlen;
2227 if (test_bit(ST_RXSTOP, &portp->state))
2233 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2234 head = (unsigned int) readw(&rp->head);
2235 if (head != ((unsigned int) readw(&rp->head)))
2236 head = (unsigned int) readw(&rp->head);
2237 tail = (unsigned int) readw(&rp->tail);
2238 size = portp->rxsize;
2243 len = size - (tail - head);
2244 stlen = size - tail;
2247 len = tty_buffer_request_room(tty, len);
2249 shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset);
2252 unsigned char *cptr;
2254 stlen = min(len, stlen);
2255 tty_prepare_flip_string(tty, &cptr, stlen);
2256 memcpy_fromio(cptr, shbuf + tail, stlen);
2264 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2265 writew(tail, &rp->tail);
2268 set_bit(ST_RXING, &portp->state);
2270 tty_schedule_flip(tty);
2273 /*****************************************************************************/
2276 * Set up and carry out any delayed commands. There is only a small set
2277 * of slave commands that can be done "off-level". So it is not too
2278 * difficult to deal with them here.
2281 static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp)
2285 if (test_bit(ST_DOSIGS, &portp->state)) {
2286 if (test_bit(ST_DOFLUSHTX, &portp->state) &&
2287 test_bit(ST_DOFLUSHRX, &portp->state))
2288 cmd = A_SETSIGNALSF;
2289 else if (test_bit(ST_DOFLUSHTX, &portp->state))
2290 cmd = A_SETSIGNALSFTX;
2291 else if (test_bit(ST_DOFLUSHRX, &portp->state))
2292 cmd = A_SETSIGNALSFRX;
2295 clear_bit(ST_DOFLUSHTX, &portp->state);
2296 clear_bit(ST_DOFLUSHRX, &portp->state);
2297 clear_bit(ST_DOSIGS, &portp->state);
2298 memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig,
2300 writel(0, &cp->status);
2301 writel(cmd, &cp->cmd);
2302 set_bit(ST_CMDING, &portp->state);
2303 } else if (test_bit(ST_DOFLUSHTX, &portp->state) ||
2304 test_bit(ST_DOFLUSHRX, &portp->state)) {
2305 cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0);
2306 cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0);
2307 clear_bit(ST_DOFLUSHTX, &portp->state);
2308 clear_bit(ST_DOFLUSHRX, &portp->state);
2309 memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int));
2310 writel(0, &cp->status);
2311 writel(A_FLUSH, &cp->cmd);
2312 set_bit(ST_CMDING, &portp->state);
2316 /*****************************************************************************/
2319 * Host command service checking. This handles commands or messages
2320 * coming from the slave to the host. Must have board shared memory
2321 * enabled and interrupts off when called. Notice that by servicing the
2322 * read data last we don't need to change the shared memory pointer
2323 * during processing (which is a slow IO operation).
2324 * Return value indicates if this port is still awaiting actions from
2325 * the slave (like open, command, or even TX data being sent). If 0
2326 * then port is still busy, otherwise no longer busy.
2329 static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp)
2331 cdkasy_t __iomem *ap;
2332 cdkctrl_t __iomem *cp;
2333 struct tty_struct *tty;
2335 unsigned long oldsigs;
2338 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
2342 * Check if we are waiting for an open completion message.
2344 if (test_bit(ST_OPENING, &portp->state)) {
2345 rc = readl(&cp->openarg);
2346 if (readb(&cp->open) == 0 && rc != 0) {
2349 writel(0, &cp->openarg);
2351 clear_bit(ST_OPENING, &portp->state);
2352 wake_up_interruptible(&portp->raw_wait);
2357 * Check if we are waiting for a close completion message.
2359 if (test_bit(ST_CLOSING, &portp->state)) {
2360 rc = (int) readl(&cp->closearg);
2361 if (readb(&cp->close) == 0 && rc != 0) {
2364 writel(0, &cp->closearg);
2366 clear_bit(ST_CLOSING, &portp->state);
2367 wake_up_interruptible(&portp->raw_wait);
2372 * Check if we are waiting for a command completion message. We may
2373 * need to copy out the command results associated with this command.
2375 if (test_bit(ST_CMDING, &portp->state)) {
2376 rc = readl(&cp->status);
2377 if (readl(&cp->cmd) == 0 && rc != 0) {
2380 if (portp->argp != NULL) {
2381 memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]),
2385 writel(0, &cp->status);
2387 clear_bit(ST_CMDING, &portp->state);
2388 stli_dodelaycmd(portp, cp);
2389 wake_up_interruptible(&portp->raw_wait);
2394 * Check for any notification messages ready. This includes lots of
2395 * different types of events - RX chars ready, RX break received,
2396 * TX data low or empty in the slave, modem signals changed state.
2405 if (nt.signal & SG_DCD) {
2406 oldsigs = portp->sigs;
2407 portp->sigs = stli_mktiocm(nt.sigvalue);
2408 clear_bit(ST_GETSIGS, &portp->state);
2409 if ((portp->sigs & TIOCM_CD) &&
2410 ((oldsigs & TIOCM_CD) == 0))
2411 wake_up_interruptible(&portp->open_wait);
2412 if ((oldsigs & TIOCM_CD) &&
2413 ((portp->sigs & TIOCM_CD) == 0)) {
2414 if (portp->flags & ASYNC_CHECK_CD) {
2416 schedule_work(&portp->tqhangup);
2421 if (nt.data & DT_TXEMPTY)
2422 clear_bit(ST_TXBUSY, &portp->state);
2423 if (nt.data & (DT_TXEMPTY | DT_TXLOW)) {
2427 wake_up_interruptible(&tty->write_wait);
2431 if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) {
2433 tty_insert_flip_char(tty, 0, TTY_BREAK);
2434 if (portp->flags & ASYNC_SAK) {
2438 tty_schedule_flip(tty);
2442 if (nt.data & DT_RXBUSY) {
2444 stli_read(brdp, portp);
2449 * It might seem odd that we are checking for more RX chars here.
2450 * But, we need to handle the case where the tty buffer was previously
2451 * filled, but we had more characters to pass up. The slave will not
2452 * send any more RX notify messages until the RX buffer has been emptied.
2453 * But it will leave the service bits on (since the buffer is not empty).
2454 * So from here we can try to process more RX chars.
2456 if ((!donerx) && test_bit(ST_RXING, &portp->state)) {
2457 clear_bit(ST_RXING, &portp->state);
2458 stli_read(brdp, portp);
2461 return((test_bit(ST_OPENING, &portp->state) ||
2462 test_bit(ST_CLOSING, &portp->state) ||
2463 test_bit(ST_CMDING, &portp->state) ||
2464 test_bit(ST_TXBUSY, &portp->state) ||
2465 test_bit(ST_RXING, &portp->state)) ? 0 : 1);
2468 /*****************************************************************************/
2471 * Service all ports on a particular board. Assumes that the boards
2472 * shared memory is enabled, and that the page pointer is pointed
2473 * at the cdk header structure.
2476 static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp)
2478 struct stliport *portp;
2479 unsigned char hostbits[(STL_MAXCHANS / 8) + 1];
2480 unsigned char slavebits[(STL_MAXCHANS / 8) + 1];
2481 unsigned char __iomem *slavep;
2482 int bitpos, bitat, bitsize;
2483 int channr, nrdevs, slavebitchange;
2485 bitsize = brdp->bitsize;
2486 nrdevs = brdp->nrdevs;
2489 * Check if slave wants any service. Basically we try to do as
2490 * little work as possible here. There are 2 levels of service
2491 * bits. So if there is nothing to do we bail early. We check
2492 * 8 service bits at a time in the inner loop, so we can bypass
2493 * the lot if none of them want service.
2495 memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset),
2498 memset(&slavebits[0], 0, bitsize);
2501 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2502 if (hostbits[bitpos] == 0)
2504 channr = bitpos * 8;
2505 for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) {
2506 if (hostbits[bitpos] & bitat) {
2507 portp = brdp->ports[(channr - 1)];
2508 if (stli_hostcmd(brdp, portp)) {
2510 slavebits[bitpos] |= bitat;
2517 * If any of the ports are no longer busy then update them in the
2518 * slave request bits. We need to do this after, since a host port
2519 * service may initiate more slave requests.
2521 if (slavebitchange) {
2522 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2523 slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset;
2524 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2525 if (readb(slavebits + bitpos))
2526 writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos);
2531 /*****************************************************************************/
2534 * Driver poll routine. This routine polls the boards in use and passes
2535 * messages back up to host when necessary. This is actually very
2536 * CPU efficient, since we will always have the kernel poll clock, it
2537 * adds only a few cycles when idle (since board service can be
2538 * determined very easily), but when loaded generates no interrupts
2539 * (with their expensive associated context change).
2542 static void stli_poll(unsigned long arg)
2544 cdkhdr_t __iomem *hdrp;
2545 struct stlibrd *brdp;
2548 stli_timerlist.expires = STLI_TIMEOUT;
2549 add_timer(&stli_timerlist);
2552 * Check each board and do any servicing required.
2554 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
2555 brdp = stli_brds[brdnr];
2558 if ((brdp->state & BST_STARTED) == 0)
2561 spin_lock(&brd_lock);
2563 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2564 if (readb(&hdrp->hostreq))
2565 stli_brdpoll(brdp, hdrp);
2567 spin_unlock(&brd_lock);
2571 /*****************************************************************************/
2574 * Translate the termios settings into the port setting structure of
2578 static void stli_mkasyport(struct stliport *portp, asyport_t *pp, struct ktermios *tiosp)
2580 memset(pp, 0, sizeof(asyport_t));
2583 * Start of by setting the baud, char size, parity and stop bit info.
2585 pp->baudout = tty_get_baud_rate(portp->tty);
2586 if ((tiosp->c_cflag & CBAUD) == B38400) {
2587 if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
2588 pp->baudout = 57600;
2589 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
2590 pp->baudout = 115200;
2591 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
2592 pp->baudout = 230400;
2593 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
2594 pp->baudout = 460800;
2595 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)
2596 pp->baudout = (portp->baud_base / portp->custom_divisor);
2598 if (pp->baudout > STL_MAXBAUD)
2599 pp->baudout = STL_MAXBAUD;
2600 pp->baudin = pp->baudout;
2602 switch (tiosp->c_cflag & CSIZE) {
2617 if (tiosp->c_cflag & CSTOPB)
2618 pp->stopbs = PT_STOP2;
2620 pp->stopbs = PT_STOP1;
2622 if (tiosp->c_cflag & PARENB) {
2623 if (tiosp->c_cflag & PARODD)
2624 pp->parity = PT_ODDPARITY;
2626 pp->parity = PT_EVENPARITY;
2628 pp->parity = PT_NOPARITY;
2632 * Set up any flow control options enabled.
2634 if (tiosp->c_iflag & IXON) {
2636 if (tiosp->c_iflag & IXANY)
2637 pp->flow |= F_IXANY;
2639 if (tiosp->c_cflag & CRTSCTS)
2640 pp->flow |= (F_RTSFLOW | F_CTSFLOW);
2642 pp->startin = tiosp->c_cc[VSTART];
2643 pp->stopin = tiosp->c_cc[VSTOP];
2644 pp->startout = tiosp->c_cc[VSTART];
2645 pp->stopout = tiosp->c_cc[VSTOP];
2648 * Set up the RX char marking mask with those RX error types we must
2649 * catch. We can get the slave to help us out a little here, it will
2650 * ignore parity errors and breaks for us, and mark parity errors in
2653 if (tiosp->c_iflag & IGNPAR)
2654 pp->iflag |= FI_IGNRXERRS;
2655 if (tiosp->c_iflag & IGNBRK)
2656 pp->iflag |= FI_IGNBREAK;
2658 portp->rxmarkmsk = 0;
2659 if (tiosp->c_iflag & (INPCK | PARMRK))
2660 pp->iflag |= FI_1MARKRXERRS;
2661 if (tiosp->c_iflag & BRKINT)
2662 portp->rxmarkmsk |= BRKINT;
2665 * Set up clocal processing as required.
2667 if (tiosp->c_cflag & CLOCAL)
2668 portp->flags &= ~ASYNC_CHECK_CD;
2670 portp->flags |= ASYNC_CHECK_CD;
2673 * Transfer any persistent flags into the asyport structure.
2675 pp->pflag = (portp->pflag & 0xffff);
2676 pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0;
2677 pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0;
2678 pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0;
2681 /*****************************************************************************/
2684 * Construct a slave signals structure for setting the DTR and RTS
2685 * signals as specified.
2688 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts)
2690 memset(sp, 0, sizeof(asysigs_t));
2692 sp->signal |= SG_DTR;
2693 sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0);
2696 sp->signal |= SG_RTS;
2697 sp->sigvalue |= ((rts > 0) ? SG_RTS : 0);
2701 /*****************************************************************************/
2704 * Convert the signals returned from the slave into a local TIOCM type
2705 * signals value. We keep them locally in TIOCM format.
2708 static long stli_mktiocm(unsigned long sigvalue)
2711 tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0);
2712 tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0);
2713 tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0);
2714 tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0);
2715 tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0);
2716 tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0);
2720 /*****************************************************************************/
2723 * All panels and ports actually attached have been worked out. All
2724 * we need to do here is set up the appropriate per port data structures.
2727 static int stli_initports(struct stlibrd *brdp)
2729 struct stliport *portp;
2730 unsigned int i, panelnr, panelport;
2732 for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) {
2733 portp = kzalloc(sizeof(struct stliport), GFP_KERNEL);
2735 printk("STALLION: failed to allocate port structure\n");
2739 portp->magic = STLI_PORTMAGIC;
2741 portp->brdnr = brdp->brdnr;
2742 portp->panelnr = panelnr;
2743 portp->baud_base = STL_BAUDBASE;
2744 portp->close_delay = STL_CLOSEDELAY;
2745 portp->closing_wait = 30 * HZ;
2746 INIT_WORK(&portp->tqhangup, stli_dohangup);
2747 init_waitqueue_head(&portp->open_wait);
2748 init_waitqueue_head(&portp->close_wait);
2749 init_waitqueue_head(&portp->raw_wait);
2751 if (panelport >= brdp->panels[panelnr]) {
2755 brdp->ports[i] = portp;
2761 /*****************************************************************************/
2764 * All the following routines are board specific hardware operations.
2767 static void stli_ecpinit(struct stlibrd *brdp)
2769 unsigned long memconf;
2771 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
2773 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2776 memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT;
2777 outb(memconf, (brdp->iobase + ECP_ATMEMAR));
2780 /*****************************************************************************/
2782 static void stli_ecpenable(struct stlibrd *brdp)
2784 outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR));
2787 /*****************************************************************************/
2789 static void stli_ecpdisable(struct stlibrd *brdp)
2791 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2794 /*****************************************************************************/
2796 static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2801 if (offset > brdp->memsize) {
2802 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2803 "range at line=%d(%d), brd=%d\n",
2804 (int) offset, line, __LINE__, brdp->brdnr);
2808 ptr = brdp->membase + (offset % ECP_ATPAGESIZE);
2809 val = (unsigned char) (offset / ECP_ATPAGESIZE);
2811 outb(val, (brdp->iobase + ECP_ATMEMPR));
2815 /*****************************************************************************/
2817 static void stli_ecpreset(struct stlibrd *brdp)
2819 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
2821 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2825 /*****************************************************************************/
2827 static void stli_ecpintr(struct stlibrd *brdp)
2829 outb(0x1, brdp->iobase);
2832 /*****************************************************************************/
2835 * The following set of functions act on ECP EISA boards.
2838 static void stli_ecpeiinit(struct stlibrd *brdp)
2840 unsigned long memconf;
2842 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
2843 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
2845 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2848 memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL;
2849 outb(memconf, (brdp->iobase + ECP_EIMEMARL));
2850 memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH;
2851 outb(memconf, (brdp->iobase + ECP_EIMEMARH));
2854 /*****************************************************************************/
2856 static void stli_ecpeienable(struct stlibrd *brdp)
2858 outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR));
2861 /*****************************************************************************/
2863 static void stli_ecpeidisable(struct stlibrd *brdp)
2865 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2868 /*****************************************************************************/
2870 static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2875 if (offset > brdp->memsize) {
2876 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2877 "range at line=%d(%d), brd=%d\n",
2878 (int) offset, line, __LINE__, brdp->brdnr);
2882 ptr = brdp->membase + (offset % ECP_EIPAGESIZE);
2883 if (offset < ECP_EIPAGESIZE)
2886 val = ECP_EIENABLE | 0x40;
2888 outb(val, (brdp->iobase + ECP_EICONFR));
2892 /*****************************************************************************/
2894 static void stli_ecpeireset(struct stlibrd *brdp)
2896 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
2898 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2902 /*****************************************************************************/
2905 * The following set of functions act on ECP MCA boards.
2908 static void stli_ecpmcenable(struct stlibrd *brdp)
2910 outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR));
2913 /*****************************************************************************/
2915 static void stli_ecpmcdisable(struct stlibrd *brdp)
2917 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
2920 /*****************************************************************************/
2922 static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2927 if (offset > brdp->memsize) {
2928 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2929 "range at line=%d(%d), brd=%d\n",
2930 (int) offset, line, __LINE__, brdp->brdnr);
2934 ptr = brdp->membase + (offset % ECP_MCPAGESIZE);
2935 val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE;
2937 outb(val, (brdp->iobase + ECP_MCCONFR));
2941 /*****************************************************************************/
2943 static void stli_ecpmcreset(struct stlibrd *brdp)
2945 outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR));
2947 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
2951 /*****************************************************************************/
2954 * The following set of functions act on ECP PCI boards.
2957 static void stli_ecppciinit(struct stlibrd *brdp)
2959 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
2961 outb(0, (brdp->iobase + ECP_PCICONFR));
2965 /*****************************************************************************/
2967 static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2972 if (offset > brdp->memsize) {
2973 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2974 "range at line=%d(%d), board=%d\n",
2975 (int) offset, line, __LINE__, brdp->brdnr);
2979 ptr = brdp->membase + (offset % ECP_PCIPAGESIZE);
2980 val = (offset / ECP_PCIPAGESIZE) << 1;
2982 outb(val, (brdp->iobase + ECP_PCICONFR));
2986 /*****************************************************************************/
2988 static void stli_ecppcireset(struct stlibrd *brdp)
2990 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
2992 outb(0, (brdp->iobase + ECP_PCICONFR));
2996 /*****************************************************************************/
2999 * The following routines act on ONboards.
3002 static void stli_onbinit(struct stlibrd *brdp)
3004 unsigned long memconf;
3006 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
3008 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
3011 memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT;
3012 outb(memconf, (brdp->iobase + ONB_ATMEMAR));
3013 outb(0x1, brdp->iobase);
3017 /*****************************************************************************/
3019 static void stli_onbenable(struct stlibrd *brdp)
3021 outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR));
3024 /*****************************************************************************/
3026 static void stli_onbdisable(struct stlibrd *brdp)
3028 outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR));
3031 /*****************************************************************************/
3033 static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
3037 if (offset > brdp->memsize) {
3038 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3039 "range at line=%d(%d), brd=%d\n",
3040 (int) offset, line, __LINE__, brdp->brdnr);
3043 ptr = brdp->membase + (offset % ONB_ATPAGESIZE);
3048 /*****************************************************************************/
3050 static void stli_onbreset(struct stlibrd *brdp)
3052 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
3054 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
3058 /*****************************************************************************/
3061 * The following routines act on ONboard EISA.
3064 static void stli_onbeinit(struct stlibrd *brdp)
3066 unsigned long memconf;
3068 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
3069 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3071 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3074 memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL;
3075 outb(memconf, (brdp->iobase + ONB_EIMEMARL));
3076 memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH;
3077 outb(memconf, (brdp->iobase + ONB_EIMEMARH));
3078 outb(0x1, brdp->iobase);
3082 /*****************************************************************************/
3084 static void stli_onbeenable(struct stlibrd *brdp)
3086 outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR));
3089 /*****************************************************************************/
3091 static void stli_onbedisable(struct stlibrd *brdp)
3093 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3096 /*****************************************************************************/
3098 static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
3103 if (offset > brdp->memsize) {
3104 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3105 "range at line=%d(%d), brd=%d\n",
3106 (int) offset, line, __LINE__, brdp->brdnr);
3110 ptr = brdp->membase + (offset % ONB_EIPAGESIZE);
3111 if (offset < ONB_EIPAGESIZE)
3114 val = ONB_EIENABLE | 0x40;
3116 outb(val, (brdp->iobase + ONB_EICONFR));
3120 /*****************************************************************************/
3122 static void stli_onbereset(struct stlibrd *brdp)
3124 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3126 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3130 /*****************************************************************************/
3133 * The following routines act on Brumby boards.
3136 static void stli_bbyinit(struct stlibrd *brdp)
3138 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
3140 outb(0, (brdp->iobase + BBY_ATCONFR));
3142 outb(0x1, brdp->iobase);
3146 /*****************************************************************************/
3148 static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
3153 BUG_ON(offset > brdp->memsize);
3155 ptr = brdp->membase + (offset % BBY_PAGESIZE);
3156 val = (unsigned char) (offset / BBY_PAGESIZE);
3157 outb(val, (brdp->iobase + BBY_ATCONFR));
3161 /*****************************************************************************/
3163 static void stli_bbyreset(struct stlibrd *brdp)
3165 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
3167 outb(0, (brdp->iobase + BBY_ATCONFR));
3171 /*****************************************************************************/
3174 * The following routines act on original old Stallion boards.
3177 static void stli_stalinit(struct stlibrd *brdp)
3179 outb(0x1, brdp->iobase);
3183 /*****************************************************************************/
3185 static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
3187 BUG_ON(offset > brdp->memsize);
3188 return brdp->membase + (offset % STAL_PAGESIZE);
3191 /*****************************************************************************/
3193 static void stli_stalreset(struct stlibrd *brdp)
3197 vecp = (u32 __iomem *) (brdp->membase + 0x30);
3198 writel(0xffff0000, vecp);
3199 outb(0, brdp->iobase);
3203 /*****************************************************************************/
3206 * Try to find an ECP board and initialize it. This handles only ECP
3210 static int stli_initecp(struct stlibrd *brdp)
3213 cdkecpsig_t __iomem *sigsp;
3214 unsigned int status, nxtid;
3216 int retval, panelnr, nrports;
3218 if ((brdp->iobase == 0) || (brdp->memaddr == 0)) {
3223 if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
3228 brdp->iosize = ECP_IOSIZE;
3231 * Based on the specific board type setup the common vars to access
3232 * and enable shared memory. Set all board specific information now
3235 switch (brdp->brdtype) {
3237 brdp->memsize = ECP_MEMSIZE;
3238 brdp->pagesize = ECP_ATPAGESIZE;
3239 brdp->init = stli_ecpinit;
3240 brdp->enable = stli_ecpenable;
3241 brdp->reenable = stli_ecpenable;
3242 brdp->disable = stli_ecpdisable;
3243 brdp->getmemptr = stli_ecpgetmemptr;
3244 brdp->intr = stli_ecpintr;
3245 brdp->reset = stli_ecpreset;
3246 name = "serial(EC8/64)";
3250 brdp->memsize = ECP_MEMSIZE;
3251 brdp->pagesize = ECP_EIPAGESIZE;
3252 brdp->init = stli_ecpeiinit;
3253 brdp->enable = stli_ecpeienable;
3254 brdp->reenable = stli_ecpeienable;
3255 brdp->disable = stli_ecpeidisable;
3256 brdp->getmemptr = stli_ecpeigetmemptr;
3257 brdp->intr = stli_ecpintr;
3258 brdp->reset = stli_ecpeireset;
3259 name = "serial(EC8/64-EI)";
3263 brdp->memsize = ECP_MEMSIZE;
3264 brdp->pagesize = ECP_MCPAGESIZE;
3266 brdp->enable = stli_ecpmcenable;
3267 brdp->reenable = stli_ecpmcenable;
3268 brdp->disable = stli_ecpmcdisable;
3269 brdp->getmemptr = stli_ecpmcgetmemptr;
3270 brdp->intr = stli_ecpintr;
3271 brdp->reset = stli_ecpmcreset;
3272 name = "serial(EC8/64-MCA)";
3276 brdp->memsize = ECP_PCIMEMSIZE;
3277 brdp->pagesize = ECP_PCIPAGESIZE;
3278 brdp->init = stli_ecppciinit;
3279 brdp->enable = NULL;
3280 brdp->reenable = NULL;
3281 brdp->disable = NULL;
3282 brdp->getmemptr = stli_ecppcigetmemptr;
3283 brdp->intr = stli_ecpintr;
3284 brdp->reset = stli_ecppcireset;
3285 name = "serial(EC/RA-PCI)";
3294 * The per-board operations structure is all set up, so now let's go
3295 * and get the board operational. Firstly initialize board configuration
3296 * registers. Set the memory mapping info so we can get at the boards
3301 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
3302 if (brdp->membase == NULL) {
3308 * Now that all specific code is set up, enable the shared memory and
3309 * look for the a signature area that will tell us exactly what board
3310 * this is, and what it is connected to it.
3313 sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3314 memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t));
3317 if (sig.magic != cpu_to_le32(ECP_MAGIC)) {
3323 * Scan through the signature looking at the panels connected to the
3324 * board. Calculate the total number of ports as we go.
3326 for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) {
3327 status = sig.panelid[nxtid];
3328 if ((status & ECH_PNLIDMASK) != nxtid)
3331 brdp->panelids[panelnr] = status;
3332 nrports = (status & ECH_PNL16PORT) ? 16 : 8;
3333 if ((nrports == 16) && ((status & ECH_PNLXPID) == 0))
3335 brdp->panels[panelnr] = nrports;
3336 brdp->nrports += nrports;
3342 brdp->state |= BST_FOUND;
3345 iounmap(brdp->membase);
3346 brdp->membase = NULL;
3348 release_region(brdp->iobase, brdp->iosize);
3353 /*****************************************************************************/
3356 * Try to find an ONboard, Brumby or Stallion board and initialize it.
3357 * This handles only these board types.
3360 static int stli_initonb(struct stlibrd *brdp)
3363 cdkonbsig_t __iomem *sigsp;
3368 * Do a basic sanity check on the IO and memory addresses.
3370 if (brdp->iobase == 0 || brdp->memaddr == 0) {
3375 brdp->iosize = ONB_IOSIZE;
3377 if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
3383 * Based on the specific board type setup the common vars to access
3384 * and enable shared memory. Set all board specific information now
3387 switch (brdp->brdtype) {
3390 brdp->memsize = ONB_MEMSIZE;
3391 brdp->pagesize = ONB_ATPAGESIZE;
3392 brdp->init = stli_onbinit;
3393 brdp->enable = stli_onbenable;
3394 brdp->reenable = stli_onbenable;
3395 brdp->disable = stli_onbdisable;
3396 brdp->getmemptr = stli_onbgetmemptr;
3397 brdp->intr = stli_ecpintr;
3398 brdp->reset = stli_onbreset;
3399 if (brdp->memaddr > 0x100000)
3400 brdp->enabval = ONB_MEMENABHI;
3402 brdp->enabval = ONB_MEMENABLO;
3403 name = "serial(ONBoard)";
3407 brdp->memsize = ONB_EIMEMSIZE;
3408 brdp->pagesize = ONB_EIPAGESIZE;
3409 brdp->init = stli_onbeinit;
3410 brdp->enable = stli_onbeenable;
3411 brdp->reenable = stli_onbeenable;
3412 brdp->disable = stli_onbedisable;
3413 brdp->getmemptr = stli_onbegetmemptr;
3414 brdp->intr = stli_ecpintr;
3415 brdp->reset = stli_onbereset;
3416 name = "serial(ONBoard/E)";
3420 brdp->memsize = BBY_MEMSIZE;
3421 brdp->pagesize = BBY_PAGESIZE;
3422 brdp->init = stli_bbyinit;
3423 brdp->enable = NULL;
3424 brdp->reenable = NULL;
3425 brdp->disable = NULL;
3426 brdp->getmemptr = stli_bbygetmemptr;
3427 brdp->intr = stli_ecpintr;
3428 brdp->reset = stli_bbyreset;
3429 name = "serial(Brumby)";
3433 brdp->memsize = STAL_MEMSIZE;
3434 brdp->pagesize = STAL_PAGESIZE;
3435 brdp->init = stli_stalinit;
3436 brdp->enable = NULL;
3437 brdp->reenable = NULL;
3438 brdp->disable = NULL;
3439 brdp->getmemptr = stli_stalgetmemptr;
3440 brdp->intr = stli_ecpintr;
3441 brdp->reset = stli_stalreset;
3442 name = "serial(Stallion)";
3451 * The per-board operations structure is all set up, so now let's go
3452 * and get the board operational. Firstly initialize board configuration
3453 * registers. Set the memory mapping info so we can get at the boards
3458 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
3459 if (brdp->membase == NULL) {
3465 * Now that all specific code is set up, enable the shared memory and
3466 * look for the a signature area that will tell us exactly what board
3467 * this is, and how many ports.
3470 sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3471 memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t));
3474 if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) ||
3475 sig.magic1 != cpu_to_le16(ONB_MAGIC1) ||
3476 sig.magic2 != cpu_to_le16(ONB_MAGIC2) ||
3477 sig.magic3 != cpu_to_le16(ONB_MAGIC3)) {
3483 * Scan through the signature alive mask and calculate how many ports
3484 * there are on this board.
3490 for (i = 0; (i < 16); i++) {
3491 if (((sig.amask0 << i) & 0x8000) == 0)
3496 brdp->panels[0] = brdp->nrports;
3499 brdp->state |= BST_FOUND;
3502 iounmap(brdp->membase);
3503 brdp->membase = NULL;
3505 release_region(brdp->iobase, brdp->iosize);
3510 /*****************************************************************************/
3513 * Start up a running board. This routine is only called after the
3514 * code has been down loaded to the board and is operational. It will
3515 * read in the memory map, and get the show on the road...
3518 static int stli_startbrd(struct stlibrd *brdp)
3520 cdkhdr_t __iomem *hdrp;
3521 cdkmem_t __iomem *memp;
3522 cdkasy_t __iomem *ap;
3523 unsigned long flags;
3524 unsigned int portnr, nrdevs, i;
3525 struct stliport *portp;
3529 spin_lock_irqsave(&brd_lock, flags);
3531 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
3532 nrdevs = hdrp->nrdevs;
3535 printk("%s(%d): CDK version %d.%d.%d --> "
3536 "nrdevs=%d memp=%x hostp=%x slavep=%x\n",
3537 __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification),
3538 readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp),
3539 readl(&hdrp->slavep));
3542 if (nrdevs < (brdp->nrports + 1)) {
3543 printk(KERN_ERR "STALLION: slave failed to allocate memory for "
3544 "all devices, devices=%d\n", nrdevs);
3545 brdp->nrports = nrdevs - 1;
3547 brdp->nrdevs = nrdevs;
3548 brdp->hostoffset = hdrp->hostp - CDK_CDKADDR;
3549 brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR;
3550 brdp->bitsize = (nrdevs + 7) / 8;
3551 memoff = readl(&hdrp->memp);
3552 if (memoff > brdp->memsize) {
3553 printk(KERN_ERR "STALLION: corrupted shared memory region?\n");
3555 goto stli_donestartup;
3557 memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff);
3558 if (readw(&memp->dtype) != TYP_ASYNCTRL) {
3559 printk(KERN_ERR "STALLION: no slave control device found\n");
3560 goto stli_donestartup;
3565 * Cycle through memory allocation of each port. We are guaranteed to
3566 * have all ports inside the first page of slave window, so no need to
3567 * change pages while reading memory map.
3569 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) {
3570 if (readw(&memp->dtype) != TYP_ASYNC)
3572 portp = brdp->ports[portnr];
3576 portp->addr = readl(&memp->offset);
3577 portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs));
3578 portp->portidx = (unsigned char) (i / 8);
3579 portp->portbit = (unsigned char) (0x1 << (i % 8));
3582 writeb(0xff, &hdrp->slavereq);
3585 * For each port setup a local copy of the RX and TX buffer offsets
3586 * and sizes. We do this separate from the above, because we need to
3587 * move the shared memory page...
3589 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) {
3590 portp = brdp->ports[portnr];
3593 if (portp->addr == 0)
3595 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
3597 portp->rxsize = readw(&ap->rxq.size);
3598 portp->txsize = readw(&ap->txq.size);
3599 portp->rxoffset = readl(&ap->rxq.offset);
3600 portp->txoffset = readl(&ap->txq.offset);
3606 spin_unlock_irqrestore(&brd_lock, flags);
3609 brdp->state |= BST_STARTED;
3611 if (! stli_timeron) {
3613 stli_timerlist.expires = STLI_TIMEOUT;
3614 add_timer(&stli_timerlist);
3620 /*****************************************************************************/
3623 * Probe and initialize the specified board.
3626 static int __devinit stli_brdinit(struct stlibrd *brdp)
3630 switch (brdp->brdtype) {
3635 retval = stli_initecp(brdp);
3642 retval = stli_initonb(brdp);
3645 printk(KERN_ERR "STALLION: board=%d is unknown board "
3646 "type=%d\n", brdp->brdnr, brdp->brdtype);
3653 stli_initports(brdp);
3654 printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x "
3655 "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype],
3656 brdp->brdnr, brdp->iobase, (int) brdp->memaddr,
3657 brdp->nrpanels, brdp->nrports);
3661 #if STLI_EISAPROBE != 0
3662 /*****************************************************************************/
3665 * Probe around trying to find where the EISA boards shared memory
3666 * might be. This is a bit if hack, but it is the best we can do.
3669 static int stli_eisamemprobe(struct stlibrd *brdp)
3671 cdkecpsig_t ecpsig, __iomem *ecpsigp;
3672 cdkonbsig_t onbsig, __iomem *onbsigp;
3676 * First up we reset the board, to get it into a known state. There
3677 * is only 2 board types here we need to worry about. Don;t use the
3678 * standard board init routine here, it programs up the shared
3679 * memory address, and we don't know it yet...
3681 if (brdp->brdtype == BRD_ECPE) {
3682 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
3683 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
3685 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3687 stli_ecpeienable(brdp);
3688 } else if (brdp->brdtype == BRD_ONBOARDE) {
3689 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
3690 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3692 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3694 outb(0x1, brdp->iobase);
3696 stli_onbeenable(brdp);
3702 brdp->memsize = ECP_MEMSIZE;
3705 * Board shared memory is enabled, so now we have a poke around and
3706 * see if we can find it.
3708 for (i = 0; (i < stli_eisamempsize); i++) {
3709 brdp->memaddr = stli_eisamemprobeaddrs[i];
3710 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
3711 if (brdp->membase == NULL)
3714 if (brdp->brdtype == BRD_ECPE) {
3715 ecpsigp = stli_ecpeigetmemptr(brdp,
3716 CDK_SIGADDR, __LINE__);
3717 memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t));
3718 if (ecpsig.magic == cpu_to_le32(ECP_MAGIC))
3721 onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp,
3722 CDK_SIGADDR, __LINE__);
3723 memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t));
3724 if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) &&
3725 (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) &&
3726 (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) &&
3727 (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3)))
3731 iounmap(brdp->membase);
3737 * Regardless of whether we found the shared memory or not we must
3738 * disable the region. After that return success or failure.
3740 if (brdp->brdtype == BRD_ECPE)
3741 stli_ecpeidisable(brdp);
3743 stli_onbedisable(brdp);
3747 brdp->membase = NULL;
3748 printk(KERN_ERR "STALLION: failed to probe shared memory "
3749 "region for %s in EISA slot=%d\n",
3750 stli_brdnames[brdp->brdtype], (brdp->iobase >> 12));
3757 static int stli_getbrdnr(void)
3761 for (i = 0; i < STL_MAXBRDS; i++) {
3762 if (!stli_brds[i]) {
3763 if (i >= stli_nrbrds)
3764 stli_nrbrds = i + 1;
3771 #if STLI_EISAPROBE != 0
3772 /*****************************************************************************/
3775 * Probe around and try to find any EISA boards in system. The biggest
3776 * problem here is finding out what memory address is associated with
3777 * an EISA board after it is found. The registers of the ECPE and
3778 * ONboardE are not readable - so we can't read them from there. We
3779 * don't have access to the EISA CMOS (or EISA BIOS) so we don't
3780 * actually have any way to find out the real value. The best we can
3781 * do is go probing around in the usual places hoping we can find it.
3784 static int stli_findeisabrds(void)
3786 struct stlibrd *brdp;
3787 unsigned int iobase, eid, i;
3788 int brdnr, found = 0;
3791 * Firstly check if this is an EISA system. If this is not an EISA system then
3792 * don't bother going any further!
3798 * Looks like an EISA system, so go searching for EISA boards.
3800 for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) {
3801 outb(0xff, (iobase + 0xc80));
3802 eid = inb(iobase + 0xc80);
3803 eid |= inb(iobase + 0xc81) << 8;
3804 if (eid != STL_EISAID)
3808 * We have found a board. Need to check if this board was
3809 * statically configured already (just in case!).
3811 for (i = 0; (i < STL_MAXBRDS); i++) {
3812 brdp = stli_brds[i];
3815 if (brdp->iobase == iobase)
3818 if (i < STL_MAXBRDS)
3822 * We have found a Stallion board and it is not configured already.
3823 * Allocate a board structure and initialize it.
3825 if ((brdp = stli_allocbrd()) == NULL)
3826 return found ? : -ENOMEM;
3827 brdnr = stli_getbrdnr();
3829 return found ? : -ENOMEM;
3830 brdp->brdnr = (unsigned int)brdnr;
3831 eid = inb(iobase + 0xc82);
3832 if (eid == ECP_EISAID)
3833 brdp->brdtype = BRD_ECPE;
3834 else if (eid == ONB_EISAID)
3835 brdp->brdtype = BRD_ONBOARDE;
3837 brdp->brdtype = BRD_UNKNOWN;
3838 brdp->iobase = iobase;
3839 outb(0x1, (iobase + 0xc84));
3840 if (stli_eisamemprobe(brdp))
3841 outb(0, (iobase + 0xc84));
3842 if (stli_brdinit(brdp) < 0) {
3847 stli_brds[brdp->brdnr] = brdp;
3854 static inline int stli_findeisabrds(void) { return 0; }
3857 /*****************************************************************************/
3860 * Find the next available board number that is free.
3863 /*****************************************************************************/
3866 * We have a Stallion board. Allocate a board structure and
3867 * initialize it. Read its IO and MEMORY resources from PCI
3868 * configuration space.
3871 static int __devinit stli_pciprobe(struct pci_dev *pdev,
3872 const struct pci_device_id *ent)
3874 struct stlibrd *brdp;
3875 int brdnr, retval = -EIO;
3877 retval = pci_enable_device(pdev);
3880 brdp = stli_allocbrd();
3885 mutex_lock(&stli_brdslock);
3886 brdnr = stli_getbrdnr();
3888 printk(KERN_INFO "STALLION: too many boards found, "
3889 "maximum supported %d\n", STL_MAXBRDS);
3890 mutex_unlock(&stli_brdslock);
3894 brdp->brdnr = (unsigned int)brdnr;
3895 stli_brds[brdp->brdnr] = brdp;
3896 mutex_unlock(&stli_brdslock);
3897 brdp->brdtype = BRD_ECPPCI;
3899 * We have all resources from the board, so lets setup the actual
3900 * board structure now.
3902 brdp->iobase = pci_resource_start(pdev, 3);
3903 brdp->memaddr = pci_resource_start(pdev, 2);
3904 retval = stli_brdinit(brdp);
3908 brdp->state |= BST_PROBED;
3909 pci_set_drvdata(pdev, brdp);
3912 brdp->enable = NULL;
3913 brdp->disable = NULL;
3917 stli_brds[brdp->brdnr] = NULL;
3924 static void stli_pciremove(struct pci_dev *pdev)
3926 struct stlibrd *brdp = pci_get_drvdata(pdev);
3928 stli_cleanup_ports(brdp);
3930 iounmap(brdp->membase);
3931 if (brdp->iosize > 0)
3932 release_region(brdp->iobase, brdp->iosize);
3934 stli_brds[brdp->brdnr] = NULL;
3938 static struct pci_driver stli_pcidriver = {
3939 .name = "istallion",
3940 .id_table = istallion_pci_tbl,
3941 .probe = stli_pciprobe,
3942 .remove = __devexit_p(stli_pciremove)
3944 /*****************************************************************************/
3947 * Allocate a new board structure. Fill out the basic info in it.
3950 static struct stlibrd *stli_allocbrd(void)
3952 struct stlibrd *brdp;
3954 brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL);
3956 printk(KERN_ERR "STALLION: failed to allocate memory "
3957 "(size=%Zd)\n", sizeof(struct stlibrd));
3960 brdp->magic = STLI_BOARDMAGIC;
3964 /*****************************************************************************/
3967 * Scan through all the boards in the configuration and see what we
3971 static int stli_initbrds(void)
3973 struct stlibrd *brdp, *nxtbrdp;
3974 struct stlconf conf;
3975 unsigned int i, j, found = 0;
3978 for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp);
3980 memset(&conf, 0, sizeof(conf));
3981 if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0)
3983 if ((brdp = stli_allocbrd()) == NULL)
3985 brdp->brdnr = stli_nrbrds;
3986 brdp->brdtype = conf.brdtype;
3987 brdp->iobase = conf.ioaddr1;
3988 brdp->memaddr = conf.memaddr;
3989 if (stli_brdinit(brdp) < 0) {
3993 stli_brds[brdp->brdnr] = brdp;
3997 retval = stli_findeisabrds();
4002 * All found boards are initialized. Now for a little optimization, if
4003 * no boards are sharing the "shared memory" regions then we can just
4004 * leave them all enabled. This is in fact the usual case.
4007 if (stli_nrbrds > 1) {
4008 for (i = 0; (i < stli_nrbrds); i++) {
4009 brdp = stli_brds[i];
4012 for (j = i + 1; (j < stli_nrbrds); j++) {
4013 nxtbrdp = stli_brds[j];
4014 if (nxtbrdp == NULL)
4016 if ((brdp->membase >= nxtbrdp->membase) &&
4017 (brdp->membase <= (nxtbrdp->membase +
4018 nxtbrdp->memsize - 1))) {
4026 if (stli_shared == 0) {
4027 for (i = 0; (i < stli_nrbrds); i++) {
4028 brdp = stli_brds[i];
4031 if (brdp->state & BST_FOUND) {
4033 brdp->enable = NULL;
4034 brdp->disable = NULL;
4039 retval = pci_register_driver(&stli_pcidriver);
4040 if (retval && found == 0) {
4041 printk(KERN_ERR "Neither isa nor eisa cards found nor pci "
4042 "driver can be registered!\n");
4051 /*****************************************************************************/
4054 * Code to handle an "staliomem" read operation. This device is the
4055 * contents of the board shared memory. It is used for down loading
4056 * the slave image (and debugging :-)
4059 static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp)
4061 unsigned long flags;
4062 void __iomem *memptr;
4063 struct stlibrd *brdp;
4069 brdnr = iminor(fp->f_path.dentry->d_inode);
4070 if (brdnr >= stli_nrbrds)
4072 brdp = stli_brds[brdnr];
4075 if (brdp->state == 0)
4077 if (off >= brdp->memsize || off + count < off)
4080 size = min(count, (size_t)(brdp->memsize - off));
4083 * Copy the data a page at a time
4086 p = (void *)__get_free_page(GFP_KERNEL);
4091 spin_lock_irqsave(&brd_lock, flags);
4093 memptr = EBRDGETMEMPTR(brdp, off);
4094 n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
4095 n = min(n, (int)PAGE_SIZE);
4096 memcpy_fromio(p, memptr, n);
4098 spin_unlock_irqrestore(&brd_lock, flags);
4099 if (copy_to_user(buf, p, n)) {
4109 free_page((unsigned long)p);
4113 /*****************************************************************************/
4116 * Code to handle an "staliomem" write operation. This device is the
4117 * contents of the board shared memory. It is used for down loading
4118 * the slave image (and debugging :-)
4120 * FIXME: copy under lock
4123 static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp)
4125 unsigned long flags;
4126 void __iomem *memptr;
4127 struct stlibrd *brdp;
4134 brdnr = iminor(fp->f_path.dentry->d_inode);
4136 if (brdnr >= stli_nrbrds)
4138 brdp = stli_brds[brdnr];
4141 if (brdp->state == 0)
4143 if (off >= brdp->memsize || off + count < off)
4146 chbuf = (char __user *) buf;
4147 size = min(count, (size_t)(brdp->memsize - off));
4150 * Copy the data a page at a time
4153 p = (void *)__get_free_page(GFP_KERNEL);
4158 n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
4159 n = min(n, (int)PAGE_SIZE);
4160 if (copy_from_user(p, chbuf, n)) {
4165 spin_lock_irqsave(&brd_lock, flags);
4167 memptr = EBRDGETMEMPTR(brdp, off);
4168 memcpy_toio(memptr, p, n);
4170 spin_unlock_irqrestore(&brd_lock, flags);
4176 free_page((unsigned long) p);
4181 /*****************************************************************************/
4184 * Return the board stats structure to user app.
4187 static int stli_getbrdstats(combrd_t __user *bp)
4189 struct stlibrd *brdp;
4192 if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t)))
4194 if (stli_brdstats.brd >= STL_MAXBRDS)
4196 brdp = stli_brds[stli_brdstats.brd];
4200 memset(&stli_brdstats, 0, sizeof(combrd_t));
4201 stli_brdstats.brd = brdp->brdnr;
4202 stli_brdstats.type = brdp->brdtype;
4203 stli_brdstats.hwid = 0;
4204 stli_brdstats.state = brdp->state;
4205 stli_brdstats.ioaddr = brdp->iobase;
4206 stli_brdstats.memaddr = brdp->memaddr;
4207 stli_brdstats.nrpanels = brdp->nrpanels;
4208 stli_brdstats.nrports = brdp->nrports;
4209 for (i = 0; (i < brdp->nrpanels); i++) {
4210 stli_brdstats.panels[i].panel = i;
4211 stli_brdstats.panels[i].hwid = brdp->panelids[i];
4212 stli_brdstats.panels[i].nrports = brdp->panels[i];
4215 if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t)))
4220 /*****************************************************************************/
4223 * Resolve the referenced port number into a port struct pointer.
4226 static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr,
4227 unsigned int portnr)
4229 struct stlibrd *brdp;
4232 if (brdnr >= STL_MAXBRDS)
4234 brdp = stli_brds[brdnr];
4237 for (i = 0; (i < panelnr); i++)
4238 portnr += brdp->panels[i];
4239 if (portnr >= brdp->nrports)
4241 return brdp->ports[portnr];
4244 /*****************************************************************************/
4247 * Return the port stats structure to user app. A NULL port struct
4248 * pointer passed in means that we need to find out from the app
4249 * what port to get stats for (used through board control device).
4252 static int stli_portcmdstats(struct stliport *portp)
4254 unsigned long flags;
4255 struct stlibrd *brdp;
4258 memset(&stli_comstats, 0, sizeof(comstats_t));
4262 brdp = stli_brds[portp->brdnr];
4266 if (brdp->state & BST_STARTED) {
4267 if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS,
4268 &stli_cdkstats, sizeof(asystats_t), 1)) < 0)
4271 memset(&stli_cdkstats, 0, sizeof(asystats_t));
4274 stli_comstats.brd = portp->brdnr;
4275 stli_comstats.panel = portp->panelnr;
4276 stli_comstats.port = portp->portnr;
4277 stli_comstats.state = portp->state;
4278 stli_comstats.flags = portp->flags;
4280 spin_lock_irqsave(&brd_lock, flags);
4281 if (portp->tty != NULL) {
4282 if (portp->tty->driver_data == portp) {
4283 stli_comstats.ttystate = portp->tty->flags;
4284 stli_comstats.rxbuffered = -1;
4285 if (portp->tty->termios != NULL) {
4286 stli_comstats.cflags = portp->tty->termios->c_cflag;
4287 stli_comstats.iflags = portp->tty->termios->c_iflag;
4288 stli_comstats.oflags = portp->tty->termios->c_oflag;
4289 stli_comstats.lflags = portp->tty->termios->c_lflag;
4293 spin_unlock_irqrestore(&brd_lock, flags);
4295 stli_comstats.txtotal = stli_cdkstats.txchars;
4296 stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover;
4297 stli_comstats.txbuffered = stli_cdkstats.txringq;
4298 stli_comstats.rxbuffered += stli_cdkstats.rxringq;
4299 stli_comstats.rxoverrun = stli_cdkstats.overruns;
4300 stli_comstats.rxparity = stli_cdkstats.parity;
4301 stli_comstats.rxframing = stli_cdkstats.framing;
4302 stli_comstats.rxlost = stli_cdkstats.ringover;
4303 stli_comstats.rxbreaks = stli_cdkstats.rxbreaks;
4304 stli_comstats.txbreaks = stli_cdkstats.txbreaks;
4305 stli_comstats.txxon = stli_cdkstats.txstart;
4306 stli_comstats.txxoff = stli_cdkstats.txstop;
4307 stli_comstats.rxxon = stli_cdkstats.rxstart;
4308 stli_comstats.rxxoff = stli_cdkstats.rxstop;
4309 stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2;
4310 stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff;
4311 stli_comstats.modem = stli_cdkstats.dcdcnt;
4312 stli_comstats.hwid = stli_cdkstats.hwid;
4313 stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals);
4318 /*****************************************************************************/
4321 * Return the port stats structure to user app. A NULL port struct
4322 * pointer passed in means that we need to find out from the app
4323 * what port to get stats for (used through board control device).
4326 static int stli_getportstats(struct stliport *portp, comstats_t __user *cp)
4328 struct stlibrd *brdp;
4332 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4334 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4335 stli_comstats.port);
4340 brdp = stli_brds[portp->brdnr];
4344 if ((rc = stli_portcmdstats(portp)) < 0)
4347 return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ?
4351 /*****************************************************************************/
4354 * Clear the port stats structure. We also return it zeroed out...
4357 static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp)
4359 struct stlibrd *brdp;
4363 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4365 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4366 stli_comstats.port);
4371 brdp = stli_brds[portp->brdnr];
4375 if (brdp->state & BST_STARTED) {
4376 if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0)
4380 memset(&stli_comstats, 0, sizeof(comstats_t));
4381 stli_comstats.brd = portp->brdnr;
4382 stli_comstats.panel = portp->panelnr;
4383 stli_comstats.port = portp->portnr;
4385 if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t)))
4390 /*****************************************************************************/
4393 * Return the entire driver ports structure to a user app.
4396 static int stli_getportstruct(struct stliport __user *arg)
4398 struct stliport stli_dummyport;
4399 struct stliport *portp;
4401 if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport)))
4403 portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr,
4404 stli_dummyport.portnr);
4407 if (copy_to_user(arg, portp, sizeof(struct stliport)))
4412 /*****************************************************************************/
4415 * Return the entire driver board structure to a user app.
4418 static int stli_getbrdstruct(struct stlibrd __user *arg)
4420 struct stlibrd stli_dummybrd;
4421 struct stlibrd *brdp;
4423 if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd)))
4425 if (stli_dummybrd.brdnr >= STL_MAXBRDS)
4427 brdp = stli_brds[stli_dummybrd.brdnr];
4430 if (copy_to_user(arg, brdp, sizeof(struct stlibrd)))
4435 /*****************************************************************************/
4438 * The "staliomem" device is also required to do some special operations on
4439 * the board. We need to be able to send an interrupt to the board,
4440 * reset it, and start/stop it.
4443 static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg)
4445 struct stlibrd *brdp;
4446 int brdnr, rc, done;
4447 void __user *argp = (void __user *)arg;
4450 * First up handle the board independent ioctls.
4456 case COM_GETPORTSTATS:
4457 rc = stli_getportstats(NULL, argp);
4460 case COM_CLRPORTSTATS:
4461 rc = stli_clrportstats(NULL, argp);
4464 case COM_GETBRDSTATS:
4465 rc = stli_getbrdstats(argp);
4469 rc = stli_getportstruct(argp);
4473 rc = stli_getbrdstruct(argp);
4482 * Now handle the board specific ioctls. These all depend on the
4483 * minor number of the device they were called from.
4486 if (brdnr >= STL_MAXBRDS)
4488 brdp = stli_brds[brdnr];
4491 if (brdp->state == 0)
4499 rc = stli_startbrd(brdp);
4502 brdp->state &= ~BST_STARTED;
4505 brdp->state &= ~BST_STARTED;
4507 if (stli_shared == 0) {
4508 if (brdp->reenable != NULL)
4509 (* brdp->reenable)(brdp);
4519 static const struct tty_operations stli_ops = {
4521 .close = stli_close,
4522 .write = stli_write,
4523 .put_char = stli_putchar,
4524 .flush_chars = stli_flushchars,
4525 .write_room = stli_writeroom,
4526 .chars_in_buffer = stli_charsinbuffer,
4527 .ioctl = stli_ioctl,
4528 .set_termios = stli_settermios,
4529 .throttle = stli_throttle,
4530 .unthrottle = stli_unthrottle,
4532 .start = stli_start,
4533 .hangup = stli_hangup,
4534 .flush_buffer = stli_flushbuffer,
4535 .break_ctl = stli_breakctl,
4536 .wait_until_sent = stli_waituntilsent,
4537 .send_xchar = stli_sendxchar,
4538 .read_proc = stli_readproc,
4539 .tiocmget = stli_tiocmget,
4540 .tiocmset = stli_tiocmset,
4543 /*****************************************************************************/
4545 * Loadable module initialization stuff.
4548 static int __init istallion_module_init(void)
4552 printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion);
4554 spin_lock_init(&stli_lock);
4555 spin_lock_init(&brd_lock);
4559 stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS);
4564 * Allocate a temporary write buffer.
4566 stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL);
4567 if (!stli_txcookbuf)
4568 printk(KERN_ERR "STALLION: failed to allocate memory "
4569 "(size=%d)\n", STLI_TXBUFSIZE);
4572 * Set up a character driver for the shared memory region. We need this
4573 * to down load the slave code image. Also it is a useful debugging tool.
4575 if (register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem))
4576 printk(KERN_ERR "STALLION: failed to register serial memory "
4579 istallion_class = class_create(THIS_MODULE, "staliomem");
4580 for (i = 0; i < 4; i++)
4581 class_device_create(istallion_class, NULL,
4582 MKDEV(STL_SIOMEMMAJOR, i),
4583 NULL, "staliomem%d", i);
4586 * Set up the tty driver structure and register us as a driver.
4588 stli_serial->owner = THIS_MODULE;
4589 stli_serial->driver_name = stli_drvname;
4590 stli_serial->name = stli_serialname;
4591 stli_serial->major = STL_SERIALMAJOR;
4592 stli_serial->minor_start = 0;
4593 stli_serial->type = TTY_DRIVER_TYPE_SERIAL;
4594 stli_serial->subtype = SERIAL_TYPE_NORMAL;
4595 stli_serial->init_termios = stli_deftermios;
4596 stli_serial->flags = TTY_DRIVER_REAL_RAW;
4597 tty_set_operations(stli_serial, &stli_ops);
4599 if (tty_register_driver(stli_serial)) {
4600 put_tty_driver(stli_serial);
4601 printk(KERN_ERR "STALLION: failed to register serial driver\n");
4607 /*****************************************************************************/
4609 static void __exit istallion_module_exit(void)
4611 struct stlibrd *brdp;
4615 printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle,
4618 pci_unregister_driver(&stli_pcidriver);
4620 * Free up all allocated resources used by the ports. This includes
4621 * memory and interrupts.
4625 del_timer_sync(&stli_timerlist);
4628 i = tty_unregister_driver(stli_serial);
4629 put_tty_driver(stli_serial);
4630 for (j = 0; j < 4; j++)
4631 class_device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, j));
4632 class_destroy(istallion_class);
4633 if ((i = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem")))
4634 printk("STALLION: failed to un-register serial memory device, "
4637 kfree(stli_txcookbuf);
4639 for (j = 0; (j < stli_nrbrds); j++) {
4640 if ((brdp = stli_brds[j]) == NULL || (brdp->state & BST_PROBED))
4643 stli_cleanup_ports(brdp);
4645 iounmap(brdp->membase);
4646 if (brdp->iosize > 0)
4647 release_region(brdp->iobase, brdp->iosize);
4649 stli_brds[j] = NULL;
4653 module_init(istallion_module_init);
4654 module_exit(istallion_module_exit);