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/sched.h>
23 #include <linux/slab.h>
24 #include <linux/interrupt.h>
25 #include <linux/tty.h>
26 #include <linux/tty_flip.h>
27 #include <linux/serial.h>
28 #include <linux/seq_file.h>
29 #include <linux/cdk.h>
30 #include <linux/comstats.h>
31 #include <linux/istallion.h>
32 #include <linux/ioport.h>
33 #include <linux/delay.h>
34 #include <linux/init.h>
35 #include <linux/device.h>
36 #include <linux/wait.h>
37 #include <linux/eisa.h>
38 #include <linux/ctype.h>
41 #include <asm/uaccess.h>
43 #include <linux/pci.h>
45 /*****************************************************************************/
48 * Define different board types. Not all of the following board types
49 * are supported by this driver. But I will use the standard "assigned"
50 * board numbers. Currently supported boards are abbreviated as:
51 * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and
55 #define BRD_STALLION 1
57 #define BRD_ONBOARD2 3
59 #define BRD_ONBOARDE 7
65 #define BRD_BRUMBY BRD_BRUMBY4
68 * Define a configuration structure to hold the board configuration.
69 * Need to set this up in the code (for now) with the boards that are
70 * to be configured into the system. This is what needs to be modified
71 * when adding/removing/modifying boards. Each line entry in the
72 * stli_brdconf[] array is a board. Each line contains io/irq/memory
73 * ranges for that board (as well as what type of board it is).
75 * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },
76 * This line will configure an EasyConnection 8/64 at io address 2a0,
77 * and shared memory address of cc000. Multiple EasyConnection 8/64
78 * boards can share the same shared memory address space. No interrupt
79 * is required for this board type.
81 * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 },
82 * This line will configure an EasyConnection 8/64 EISA in slot 5 and
83 * shared memory address of 0x80000000 (2 GByte). Multiple
84 * EasyConnection 8/64 EISA boards can share the same shared memory
85 * address space. No interrupt is required for this board type.
87 * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 },
88 * This line will configure an ONboard (ISA type) at io address 240,
89 * and shared memory address of d0000. Multiple ONboards can share
90 * the same shared memory address space. No interrupt required.
92 * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 },
93 * This line will configure a Brumby board (any number of ports!) at
94 * io address 360 and shared memory address of c8000. All Brumby boards
95 * configured into a system must have their own separate io and memory
96 * addresses. No interrupt is required.
98 * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 },
99 * This line will configure an original Stallion board at io address 330
100 * and shared memory address d0000 (this would only be valid for a "V4.0"
101 * or Rev.O Stallion board). All Stallion boards configured into the
102 * system must have their own separate io and memory addresses. No
103 * interrupt is required.
110 unsigned long memaddr;
115 static unsigned int stli_nrbrds;
117 /* stli_lock must NOT be taken holding brd_lock */
118 static spinlock_t stli_lock; /* TTY logic lock */
119 static spinlock_t brd_lock; /* Board logic lock */
122 * There is some experimental EISA board detection code in this driver.
123 * By default it is disabled, but for those that want to try it out,
124 * then set the define below to be 1.
126 #define STLI_EISAPROBE 0
128 /*****************************************************************************/
131 * Define some important driver characteristics. Device major numbers
132 * allocated as per Linux Device Registry.
134 #ifndef STL_SIOMEMMAJOR
135 #define STL_SIOMEMMAJOR 28
137 #ifndef STL_SERIALMAJOR
138 #define STL_SERIALMAJOR 24
140 #ifndef STL_CALLOUTMAJOR
141 #define STL_CALLOUTMAJOR 25
144 /*****************************************************************************/
147 * Define our local driver identity first. Set up stuff to deal with
148 * all the local structures required by a serial tty driver.
150 static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver";
151 static char *stli_drvname = "istallion";
152 static char *stli_drvversion = "5.6.0";
153 static char *stli_serialname = "ttyE";
155 static struct tty_driver *stli_serial;
156 static const struct tty_port_operations stli_port_ops;
158 #define STLI_TXBUFSIZE 4096
161 * Use a fast local buffer for cooked characters. Typically a whole
162 * bunch of cooked characters come in for a port, 1 at a time. So we
163 * save those up into a local buffer, then write out the whole lot
164 * with a large memcpy. Just use 1 buffer for all ports, since its
165 * use it is only need for short periods of time by each port.
167 static char *stli_txcookbuf;
168 static int stli_txcooksize;
169 static int stli_txcookrealsize;
170 static struct tty_struct *stli_txcooktty;
173 * Define a local default termios struct. All ports will be created
174 * with this termios initially. Basically all it defines is a raw port
175 * at 9600 baud, 8 data bits, no parity, 1 stop bit.
177 static struct ktermios stli_deftermios = {
178 .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL),
185 * Define global stats structures. Not used often, and can be
186 * re-used for each stats call.
188 static comstats_t stli_comstats;
189 static combrd_t stli_brdstats;
190 static struct asystats stli_cdkstats;
192 /*****************************************************************************/
194 static DEFINE_MUTEX(stli_brdslock);
195 static struct stlibrd *stli_brds[STL_MAXBRDS];
197 static int stli_shared;
200 * Per board state flags. Used with the state field of the board struct.
201 * Not really much here... All we need to do is keep track of whether
202 * the board has been detected, and whether it is actually running a slave
206 #define BST_STARTED 1
210 * Define the set of port state flags. These are marked for internal
211 * state purposes only, usually to do with the state of communications
212 * with the slave. Most of them need to be updated atomically, so always
213 * use the bit setting operations (unless protected by cli/sti).
220 #define ST_DOFLUSHRX 7
221 #define ST_DOFLUSHTX 8
224 #define ST_GETSIGS 11
227 * Define an array of board names as printable strings. Handy for
228 * referencing boards when printing trace and stuff.
230 static char *stli_brdnames[] = {
263 /*****************************************************************************/
266 * Define some string labels for arguments passed from the module
267 * load line. These allow for easy board definitions, and easy
268 * modification of the io, memory and irq resoucres.
271 static char *board0[8];
272 static char *board1[8];
273 static char *board2[8];
274 static char *board3[8];
276 static char **stli_brdsp[] = {
284 * Define a set of common board names, and types. This is used to
285 * parse any module arguments.
288 static struct stlibrdtype {
292 { "stallion", BRD_STALLION },
293 { "1", BRD_STALLION },
294 { "brumby", BRD_BRUMBY },
295 { "brumby4", BRD_BRUMBY },
296 { "brumby/4", BRD_BRUMBY },
297 { "brumby-4", BRD_BRUMBY },
298 { "brumby8", BRD_BRUMBY },
299 { "brumby/8", BRD_BRUMBY },
300 { "brumby-8", BRD_BRUMBY },
301 { "brumby16", BRD_BRUMBY },
302 { "brumby/16", BRD_BRUMBY },
303 { "brumby-16", BRD_BRUMBY },
305 { "onboard2", BRD_ONBOARD2 },
306 { "onboard-2", BRD_ONBOARD2 },
307 { "onboard/2", BRD_ONBOARD2 },
308 { "onboard-mc", BRD_ONBOARD2 },
309 { "onboard/mc", BRD_ONBOARD2 },
310 { "onboard-mca", BRD_ONBOARD2 },
311 { "onboard/mca", BRD_ONBOARD2 },
312 { "3", BRD_ONBOARD2 },
313 { "onboard", BRD_ONBOARD },
314 { "onboardat", BRD_ONBOARD },
315 { "4", BRD_ONBOARD },
316 { "onboarde", BRD_ONBOARDE },
317 { "onboard-e", BRD_ONBOARDE },
318 { "onboard/e", BRD_ONBOARDE },
319 { "onboard-ei", BRD_ONBOARDE },
320 { "onboard/ei", BRD_ONBOARDE },
321 { "7", BRD_ONBOARDE },
323 { "ecpat", BRD_ECP },
324 { "ec8/64", BRD_ECP },
325 { "ec8/64-at", BRD_ECP },
326 { "ec8/64-isa", BRD_ECP },
328 { "ecpe", BRD_ECPE },
329 { "ecpei", BRD_ECPE },
330 { "ec8/64-e", BRD_ECPE },
331 { "ec8/64-ei", BRD_ECPE },
333 { "ecpmc", BRD_ECPMC },
334 { "ec8/64-mc", BRD_ECPMC },
335 { "ec8/64-mca", BRD_ECPMC },
337 { "ecppci", BRD_ECPPCI },
338 { "ec/ra", BRD_ECPPCI },
339 { "ec/ra-pc", BRD_ECPPCI },
340 { "ec/ra-pci", BRD_ECPPCI },
341 { "29", BRD_ECPPCI },
345 * Define the module agruments.
347 MODULE_AUTHOR("Greg Ungerer");
348 MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver");
349 MODULE_LICENSE("GPL");
352 module_param_array(board0, charp, NULL, 0);
353 MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]");
354 module_param_array(board1, charp, NULL, 0);
355 MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]");
356 module_param_array(board2, charp, NULL, 0);
357 MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]");
358 module_param_array(board3, charp, NULL, 0);
359 MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]");
361 #if STLI_EISAPROBE != 0
363 * Set up a default memory address table for EISA board probing.
364 * The default addresses are all bellow 1Mbyte, which has to be the
365 * case anyway. They should be safe, since we only read values from
366 * them, and interrupts are disabled while we do it. If the higher
367 * memory support is compiled in then we also try probing around
368 * the 1Gb, 2Gb and 3Gb areas as well...
370 static unsigned long stli_eisamemprobeaddrs[] = {
371 0xc0000, 0xd0000, 0xe0000, 0xf0000,
372 0x80000000, 0x80010000, 0x80020000, 0x80030000,
373 0x40000000, 0x40010000, 0x40020000, 0x40030000,
374 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000,
375 0xff000000, 0xff010000, 0xff020000, 0xff030000,
378 static int stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs);
382 * Define the Stallion PCI vendor and device IDs.
384 #ifndef PCI_DEVICE_ID_ECRA
385 #define PCI_DEVICE_ID_ECRA 0x0004
388 static struct pci_device_id istallion_pci_tbl[] = {
389 { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA), },
392 MODULE_DEVICE_TABLE(pci, istallion_pci_tbl);
394 static struct pci_driver stli_pcidriver;
396 /*****************************************************************************/
399 * Hardware configuration info for ECP boards. These defines apply
400 * to the directly accessible io ports of the ECP. There is a set of
401 * defines for each ECP board type, ISA, EISA, MCA and PCI.
405 #define ECP_MEMSIZE (128 * 1024)
406 #define ECP_PCIMEMSIZE (256 * 1024)
408 #define ECP_ATPAGESIZE (4 * 1024)
409 #define ECP_MCPAGESIZE (4 * 1024)
410 #define ECP_EIPAGESIZE (64 * 1024)
411 #define ECP_PCIPAGESIZE (64 * 1024)
413 #define STL_EISAID 0x8c4e
416 * Important defines for the ISA class of ECP board.
419 #define ECP_ATCONFR 1
420 #define ECP_ATMEMAR 2
421 #define ECP_ATMEMPR 3
422 #define ECP_ATSTOP 0x1
423 #define ECP_ATINTENAB 0x10
424 #define ECP_ATENABLE 0x20
425 #define ECP_ATDISABLE 0x00
426 #define ECP_ATADDRMASK 0x3f000
427 #define ECP_ATADDRSHFT 12
430 * Important defines for the EISA class of ECP board.
433 #define ECP_EIMEMARL 1
434 #define ECP_EICONFR 2
435 #define ECP_EIMEMARH 3
436 #define ECP_EIENABLE 0x1
437 #define ECP_EIDISABLE 0x0
438 #define ECP_EISTOP 0x4
439 #define ECP_EIEDGE 0x00
440 #define ECP_EILEVEL 0x80
441 #define ECP_EIADDRMASKL 0x00ff0000
442 #define ECP_EIADDRSHFTL 16
443 #define ECP_EIADDRMASKH 0xff000000
444 #define ECP_EIADDRSHFTH 24
445 #define ECP_EIBRDENAB 0xc84
447 #define ECP_EISAID 0x4
450 * Important defines for the Micro-channel class of ECP board.
451 * (It has a lot in common with the ISA boards.)
454 #define ECP_MCCONFR 1
455 #define ECP_MCSTOP 0x20
456 #define ECP_MCENABLE 0x80
457 #define ECP_MCDISABLE 0x00
460 * Important defines for the PCI class of ECP board.
461 * (It has a lot in common with the other ECP boards.)
463 #define ECP_PCIIREG 0
464 #define ECP_PCICONFR 1
465 #define ECP_PCISTOP 0x01
468 * Hardware configuration info for ONboard and Brumby boards. These
469 * defines apply to the directly accessible io ports of these boards.
471 #define ONB_IOSIZE 16
472 #define ONB_MEMSIZE (64 * 1024)
473 #define ONB_ATPAGESIZE (64 * 1024)
474 #define ONB_MCPAGESIZE (64 * 1024)
475 #define ONB_EIMEMSIZE (128 * 1024)
476 #define ONB_EIPAGESIZE (64 * 1024)
479 * Important defines for the ISA class of ONboard board.
482 #define ONB_ATMEMAR 1
483 #define ONB_ATCONFR 2
484 #define ONB_ATSTOP 0x4
485 #define ONB_ATENABLE 0x01
486 #define ONB_ATDISABLE 0x00
487 #define ONB_ATADDRMASK 0xff0000
488 #define ONB_ATADDRSHFT 16
490 #define ONB_MEMENABLO 0
491 #define ONB_MEMENABHI 0x02
494 * Important defines for the EISA class of ONboard board.
497 #define ONB_EIMEMARL 1
498 #define ONB_EICONFR 2
499 #define ONB_EIMEMARH 3
500 #define ONB_EIENABLE 0x1
501 #define ONB_EIDISABLE 0x0
502 #define ONB_EISTOP 0x4
503 #define ONB_EIEDGE 0x00
504 #define ONB_EILEVEL 0x80
505 #define ONB_EIADDRMASKL 0x00ff0000
506 #define ONB_EIADDRSHFTL 16
507 #define ONB_EIADDRMASKH 0xff000000
508 #define ONB_EIADDRSHFTH 24
509 #define ONB_EIBRDENAB 0xc84
511 #define ONB_EISAID 0x1
514 * Important defines for the Brumby boards. They are pretty simple,
515 * there is not much that is programmably configurable.
517 #define BBY_IOSIZE 16
518 #define BBY_MEMSIZE (64 * 1024)
519 #define BBY_PAGESIZE (16 * 1024)
522 #define BBY_ATCONFR 1
523 #define BBY_ATSTOP 0x4
526 * Important defines for the Stallion boards. They are pretty simple,
527 * there is not much that is programmably configurable.
529 #define STAL_IOSIZE 16
530 #define STAL_MEMSIZE (64 * 1024)
531 #define STAL_PAGESIZE (64 * 1024)
534 * Define the set of status register values for EasyConnection panels.
535 * The signature will return with the status value for each panel. From
536 * this we can determine what is attached to the board - before we have
537 * actually down loaded any code to it.
539 #define ECH_PNLSTATUS 2
540 #define ECH_PNL16PORT 0x20
541 #define ECH_PNLIDMASK 0x07
542 #define ECH_PNLXPID 0x40
543 #define ECH_PNLINTRPEND 0x80
546 * Define some macros to do things to the board. Even those these boards
547 * are somewhat related there is often significantly different ways of
548 * doing some operation on it (like enable, paging, reset, etc). So each
549 * board class has a set of functions which do the commonly required
550 * operations. The macros below basically just call these functions,
551 * generally checking for a NULL function - which means that the board
552 * needs nothing done to it to achieve this operation!
554 #define EBRDINIT(brdp) \
555 if (brdp->init != NULL) \
558 #define EBRDENABLE(brdp) \
559 if (brdp->enable != NULL) \
560 (* brdp->enable)(brdp);
562 #define EBRDDISABLE(brdp) \
563 if (brdp->disable != NULL) \
564 (* brdp->disable)(brdp);
566 #define EBRDINTR(brdp) \
567 if (brdp->intr != NULL) \
568 (* brdp->intr)(brdp);
570 #define EBRDRESET(brdp) \
571 if (brdp->reset != NULL) \
572 (* brdp->reset)(brdp);
574 #define EBRDGETMEMPTR(brdp,offset) \
575 (* brdp->getmemptr)(brdp, offset, __LINE__)
578 * Define the maximal baud rate, and the default baud base for ports.
580 #define STL_MAXBAUD 460800
581 #define STL_BAUDBASE 115200
582 #define STL_CLOSEDELAY (5 * HZ / 10)
584 /*****************************************************************************/
587 * Define macros to extract a brd or port number from a minor number.
589 #define MINOR2BRD(min) (((min) & 0xc0) >> 6)
590 #define MINOR2PORT(min) ((min) & 0x3f)
592 /*****************************************************************************/
595 * Prototype all functions in this driver!
598 static int stli_parsebrd(struct stlconf *confp, char **argp);
599 static int stli_open(struct tty_struct *tty, struct file *filp);
600 static void stli_close(struct tty_struct *tty, struct file *filp);
601 static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count);
602 static int stli_putchar(struct tty_struct *tty, unsigned char ch);
603 static void stli_flushchars(struct tty_struct *tty);
604 static int stli_writeroom(struct tty_struct *tty);
605 static int stli_charsinbuffer(struct tty_struct *tty);
606 static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg);
607 static void stli_settermios(struct tty_struct *tty, struct ktermios *old);
608 static void stli_throttle(struct tty_struct *tty);
609 static void stli_unthrottle(struct tty_struct *tty);
610 static void stli_stop(struct tty_struct *tty);
611 static void stli_start(struct tty_struct *tty);
612 static void stli_flushbuffer(struct tty_struct *tty);
613 static int stli_breakctl(struct tty_struct *tty, int state);
614 static void stli_waituntilsent(struct tty_struct *tty, int timeout);
615 static void stli_sendxchar(struct tty_struct *tty, char ch);
616 static void stli_hangup(struct tty_struct *tty);
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 long stli_memioctl(struct file *fp, unsigned int cmd, unsigned long arg);
623 static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp);
624 static void stli_poll(unsigned long arg);
625 static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp);
626 static int stli_initopen(struct tty_struct *tty, struct stlibrd *brdp, struct stliport *portp);
627 static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
628 static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
629 static int stli_setport(struct tty_struct *tty);
630 static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
631 static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
632 static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
633 static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp);
634 static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp, asyport_t *pp, struct ktermios *tiosp);
635 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts);
636 static long stli_mktiocm(unsigned long sigvalue);
637 static void stli_read(struct stlibrd *brdp, struct stliport *portp);
638 static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp);
639 static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp);
640 static int stli_getbrdstats(combrd_t __user *bp);
641 static int stli_getportstats(struct tty_struct *tty, struct stliport *portp, comstats_t __user *cp);
642 static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp);
643 static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp);
644 static int stli_getportstruct(struct stliport __user *arg);
645 static int stli_getbrdstruct(struct stlibrd __user *arg);
646 static struct stlibrd *stli_allocbrd(void);
648 static void stli_ecpinit(struct stlibrd *brdp);
649 static void stli_ecpenable(struct stlibrd *brdp);
650 static void stli_ecpdisable(struct stlibrd *brdp);
651 static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
652 static void stli_ecpreset(struct stlibrd *brdp);
653 static void stli_ecpintr(struct stlibrd *brdp);
654 static void stli_ecpeiinit(struct stlibrd *brdp);
655 static void stli_ecpeienable(struct stlibrd *brdp);
656 static void stli_ecpeidisable(struct stlibrd *brdp);
657 static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
658 static void stli_ecpeireset(struct stlibrd *brdp);
659 static void stli_ecpmcenable(struct stlibrd *brdp);
660 static void stli_ecpmcdisable(struct stlibrd *brdp);
661 static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
662 static void stli_ecpmcreset(struct stlibrd *brdp);
663 static void stli_ecppciinit(struct stlibrd *brdp);
664 static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
665 static void stli_ecppcireset(struct stlibrd *brdp);
667 static void stli_onbinit(struct stlibrd *brdp);
668 static void stli_onbenable(struct stlibrd *brdp);
669 static void stli_onbdisable(struct stlibrd *brdp);
670 static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
671 static void stli_onbreset(struct stlibrd *brdp);
672 static void stli_onbeinit(struct stlibrd *brdp);
673 static void stli_onbeenable(struct stlibrd *brdp);
674 static void stli_onbedisable(struct stlibrd *brdp);
675 static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
676 static void stli_onbereset(struct stlibrd *brdp);
677 static void stli_bbyinit(struct stlibrd *brdp);
678 static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
679 static void stli_bbyreset(struct stlibrd *brdp);
680 static void stli_stalinit(struct stlibrd *brdp);
681 static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
682 static void stli_stalreset(struct stlibrd *brdp);
684 static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr);
686 static int stli_initecp(struct stlibrd *brdp);
687 static int stli_initonb(struct stlibrd *brdp);
688 #if STLI_EISAPROBE != 0
689 static int stli_eisamemprobe(struct stlibrd *brdp);
691 static int stli_initports(struct stlibrd *brdp);
693 /*****************************************************************************/
696 * Define the driver info for a user level shared memory device. This
697 * device will work sort of like the /dev/kmem device - except that it
698 * will give access to the shared memory on the Stallion intelligent
699 * board. This is also a very useful debugging tool.
701 static const struct file_operations stli_fsiomem = {
702 .owner = THIS_MODULE,
703 .read = stli_memread,
704 .write = stli_memwrite,
705 .unlocked_ioctl = stli_memioctl,
706 .llseek = default_llseek,
709 /*****************************************************************************/
712 * Define a timer_list entry for our poll routine. The slave board
713 * is polled every so often to see if anything needs doing. This is
714 * much cheaper on host cpu than using interrupts. It turns out to
715 * not increase character latency by much either...
717 static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0);
719 static int stli_timeron;
722 * Define the calculation for the timeout routine.
724 #define STLI_TIMEOUT (jiffies + 1)
726 /*****************************************************************************/
728 static struct class *istallion_class;
730 static void stli_cleanup_ports(struct stlibrd *brdp)
732 struct stliport *portp;
734 struct tty_struct *tty;
736 for (j = 0; j < STL_MAXPORTS; j++) {
737 portp = brdp->ports[j];
739 tty = tty_port_tty_get(&portp->port);
749 /*****************************************************************************/
752 * Parse the supplied argument string, into the board conf struct.
755 static int stli_parsebrd(struct stlconf *confp, char **argp)
760 if (argp[0] == NULL || *argp[0] == 0)
763 for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++)
766 for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) {
767 if (strcmp(stli_brdstr[i].name, argp[0]) == 0)
770 if (i == ARRAY_SIZE(stli_brdstr)) {
771 printk(KERN_WARNING "istallion: unknown board name, %s?\n", argp[0]);
775 confp->brdtype = stli_brdstr[i].type;
776 if (argp[1] != NULL && *argp[1] != 0)
777 confp->ioaddr1 = simple_strtoul(argp[1], NULL, 0);
778 if (argp[2] != NULL && *argp[2] != 0)
779 confp->memaddr = simple_strtoul(argp[2], NULL, 0);
783 /*****************************************************************************/
786 * On the first open of the device setup the port hardware, and
787 * initialize the per port data structure. Since initializing the port
788 * requires several commands to the board we will need to wait for any
789 * other open that is already initializing the port.
791 * Locking: protected by the port mutex.
794 static int stli_activate(struct tty_port *port, struct tty_struct *tty)
796 struct stliport *portp = container_of(port, struct stliport, port);
797 struct stlibrd *brdp = stli_brds[portp->brdnr];
800 if ((rc = stli_initopen(tty, brdp, portp)) >= 0)
801 clear_bit(TTY_IO_ERROR, &tty->flags);
802 wake_up_interruptible(&portp->raw_wait);
806 static int stli_open(struct tty_struct *tty, struct file *filp)
808 struct stlibrd *brdp;
809 struct stliport *portp;
810 unsigned int minordev, brdnr, portnr;
812 minordev = tty->index;
813 brdnr = MINOR2BRD(minordev);
814 if (brdnr >= stli_nrbrds)
816 brdp = stli_brds[brdnr];
819 if (!test_bit(BST_STARTED, &brdp->state))
821 portnr = MINOR2PORT(minordev);
822 if (portnr > brdp->nrports)
825 portp = brdp->ports[portnr];
828 if (portp->devnr < 1)
831 tty->driver_data = portp;
832 return tty_port_open(&portp->port, tty, filp);
836 /*****************************************************************************/
838 static void stli_shutdown(struct tty_port *port)
840 struct stlibrd *brdp;
843 struct stliport *portp = container_of(port, struct stliport, port);
845 if (portp->brdnr >= stli_nrbrds)
847 brdp = stli_brds[portp->brdnr];
852 * May want to wait for data to drain before closing. The BUSY
853 * flag keeps track of whether we are still transmitting or not.
854 * It is updated by messages from the slave - indicating when all
855 * chars really have drained.
858 if (!test_bit(ST_CLOSING, &portp->state))
859 stli_rawclose(brdp, portp, 0, 0);
861 spin_lock_irqsave(&stli_lock, flags);
862 clear_bit(ST_TXBUSY, &portp->state);
863 clear_bit(ST_RXSTOP, &portp->state);
864 spin_unlock_irqrestore(&stli_lock, flags);
866 ftype = FLUSHTX | FLUSHRX;
867 stli_cmdwait(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0);
870 static void stli_close(struct tty_struct *tty, struct file *filp)
872 struct stliport *portp = tty->driver_data;
876 spin_lock_irqsave(&stli_lock, flags);
877 /* Flush any internal buffering out first */
878 if (tty == stli_txcooktty)
879 stli_flushchars(tty);
880 spin_unlock_irqrestore(&stli_lock, flags);
881 tty_port_close(&portp->port, tty, filp);
884 /*****************************************************************************/
887 * Carry out first open operations on a port. This involves a number of
888 * commands to be sent to the slave. We need to open the port, set the
889 * notification events, set the initial port settings, get and set the
890 * initial signal values. We sleep and wait in between each one. But
891 * this still all happens pretty quickly.
894 static int stli_initopen(struct tty_struct *tty,
895 struct stlibrd *brdp, struct stliport *portp)
901 if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0)
904 memset(&nt, 0, sizeof(asynotify_t));
905 nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK);
907 if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt,
908 sizeof(asynotify_t), 0)) < 0)
911 stli_mkasyport(tty, portp, &aport, tty->termios);
912 if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport,
913 sizeof(asyport_t), 0)) < 0)
916 set_bit(ST_GETSIGS, &portp->state);
917 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig,
918 sizeof(asysigs_t), 1)) < 0)
920 if (test_and_clear_bit(ST_GETSIGS, &portp->state))
921 portp->sigs = stli_mktiocm(portp->asig.sigvalue);
922 stli_mkasysigs(&portp->asig, 1, 1);
923 if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
924 sizeof(asysigs_t), 0)) < 0)
930 /*****************************************************************************/
933 * Send an open message to the slave. This will sleep waiting for the
934 * acknowledgement, so must have user context. We need to co-ordinate
935 * with close events here, since we don't want open and close events
939 static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
941 cdkhdr_t __iomem *hdrp;
942 cdkctrl_t __iomem *cp;
943 unsigned char __iomem *bits;
948 * Send a message to the slave to open this port.
952 * Slave is already closing this port. This can happen if a hangup
953 * occurs on this port. So we must wait until it is complete. The
954 * order of opens and closes may not be preserved across shared
955 * memory, so we must wait until it is complete.
957 wait_event_interruptible_tty(portp->raw_wait,
958 !test_bit(ST_CLOSING, &portp->state));
959 if (signal_pending(current)) {
964 * Everything is ready now, so write the open message into shared
965 * memory. Once the message is in set the service bits to say that
966 * this port wants service.
968 spin_lock_irqsave(&brd_lock, flags);
970 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
971 writel(arg, &cp->openarg);
972 writeb(1, &cp->open);
973 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
974 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
976 writeb(readb(bits) | portp->portbit, bits);
980 spin_unlock_irqrestore(&brd_lock, flags);
985 * Slave is in action, so now we must wait for the open acknowledgment
989 set_bit(ST_OPENING, &portp->state);
990 spin_unlock_irqrestore(&brd_lock, flags);
992 wait_event_interruptible_tty(portp->raw_wait,
993 !test_bit(ST_OPENING, &portp->state));
994 if (signal_pending(current))
997 if ((rc == 0) && (portp->rc != 0))
1002 /*****************************************************************************/
1005 * Send a close message to the slave. Normally this will sleep waiting
1006 * for the acknowledgement, but if wait parameter is 0 it will not. If
1007 * wait is true then must have user context (to sleep).
1010 static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
1012 cdkhdr_t __iomem *hdrp;
1013 cdkctrl_t __iomem *cp;
1014 unsigned char __iomem *bits;
1015 unsigned long flags;
1019 * Slave is already closing this port. This can happen if a hangup
1020 * occurs on this port.
1023 wait_event_interruptible_tty(portp->raw_wait,
1024 !test_bit(ST_CLOSING, &portp->state));
1025 if (signal_pending(current)) {
1026 return -ERESTARTSYS;
1031 * Write the close command into shared memory.
1033 spin_lock_irqsave(&brd_lock, flags);
1035 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1036 writel(arg, &cp->closearg);
1037 writeb(1, &cp->close);
1038 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1039 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1041 writeb(readb(bits) |portp->portbit, bits);
1044 set_bit(ST_CLOSING, &portp->state);
1045 spin_unlock_irqrestore(&brd_lock, flags);
1051 * Slave is in action, so now we must wait for the open acknowledgment
1055 wait_event_interruptible_tty(portp->raw_wait,
1056 !test_bit(ST_CLOSING, &portp->state));
1057 if (signal_pending(current))
1060 if ((rc == 0) && (portp->rc != 0))
1065 /*****************************************************************************/
1068 * Send a command to the slave and wait for the response. This must
1069 * have user context (it sleeps). This routine is generic in that it
1070 * can send any type of command. Its purpose is to wait for that command
1071 * to complete (as opposed to initiating the command then returning).
1074 static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
1077 * no need for wait_event_tty because clearing ST_CMDING cannot block
1080 wait_event_interruptible(portp->raw_wait,
1081 !test_bit(ST_CMDING, &portp->state));
1082 if (signal_pending(current))
1083 return -ERESTARTSYS;
1085 stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
1087 wait_event_interruptible(portp->raw_wait,
1088 !test_bit(ST_CMDING, &portp->state));
1089 if (signal_pending(current))
1090 return -ERESTARTSYS;
1097 /*****************************************************************************/
1100 * Send the termios settings for this port to the slave. This sleeps
1101 * waiting for the command to complete - so must have user context.
1104 static int stli_setport(struct tty_struct *tty)
1106 struct stliport *portp = tty->driver_data;
1107 struct stlibrd *brdp;
1112 if (portp->brdnr >= stli_nrbrds)
1114 brdp = stli_brds[portp->brdnr];
1118 stli_mkasyport(tty, portp, &aport, tty->termios);
1119 return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0));
1122 /*****************************************************************************/
1124 static int stli_carrier_raised(struct tty_port *port)
1126 struct stliport *portp = container_of(port, struct stliport, port);
1127 return (portp->sigs & TIOCM_CD) ? 1 : 0;
1130 static void stli_dtr_rts(struct tty_port *port, int on)
1132 struct stliport *portp = container_of(port, struct stliport, port);
1133 struct stlibrd *brdp = stli_brds[portp->brdnr];
1134 stli_mkasysigs(&portp->asig, on, on);
1135 if (stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1136 sizeof(asysigs_t), 0) < 0)
1137 printk(KERN_WARNING "istallion: dtr set failed.\n");
1141 /*****************************************************************************/
1144 * Write routine. Take the data and put it in the shared memory ring
1145 * queue. If port is not already sending chars then need to mark the
1146 * service bits for this port.
1149 static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count)
1151 cdkasy_t __iomem *ap;
1152 cdkhdr_t __iomem *hdrp;
1153 unsigned char __iomem *bits;
1154 unsigned char __iomem *shbuf;
1155 unsigned char *chbuf;
1156 struct stliport *portp;
1157 struct stlibrd *brdp;
1158 unsigned int len, stlen, head, tail, size;
1159 unsigned long flags;
1161 if (tty == stli_txcooktty)
1162 stli_flushchars(tty);
1163 portp = tty->driver_data;
1166 if (portp->brdnr >= stli_nrbrds)
1168 brdp = stli_brds[portp->brdnr];
1171 chbuf = (unsigned char *) buf;
1174 * All data is now local, shove as much as possible into shared memory.
1176 spin_lock_irqsave(&brd_lock, flags);
1178 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1179 head = (unsigned int) readw(&ap->txq.head);
1180 tail = (unsigned int) readw(&ap->txq.tail);
1181 if (tail != ((unsigned int) readw(&ap->txq.tail)))
1182 tail = (unsigned int) readw(&ap->txq.tail);
1183 size = portp->txsize;
1185 len = size - (head - tail) - 1;
1186 stlen = size - head;
1188 len = tail - head - 1;
1192 len = min(len, (unsigned int)count);
1194 shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset);
1197 stlen = min(len, stlen);
1198 memcpy_toio(shbuf + head, chbuf, stlen);
1209 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1210 writew(head, &ap->txq.head);
1211 if (test_bit(ST_TXBUSY, &portp->state)) {
1212 if (readl(&ap->changed.data) & DT_TXEMPTY)
1213 writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
1215 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1216 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1218 writeb(readb(bits) | portp->portbit, bits);
1219 set_bit(ST_TXBUSY, &portp->state);
1221 spin_unlock_irqrestore(&brd_lock, flags);
1226 /*****************************************************************************/
1229 * Output a single character. We put it into a temporary local buffer
1230 * (for speed) then write out that buffer when the flushchars routine
1231 * is called. There is a safety catch here so that if some other port
1232 * writes chars before the current buffer has been, then we write them
1233 * first them do the new ports.
1236 static int stli_putchar(struct tty_struct *tty, unsigned char ch)
1238 if (tty != stli_txcooktty) {
1239 if (stli_txcooktty != NULL)
1240 stli_flushchars(stli_txcooktty);
1241 stli_txcooktty = tty;
1244 stli_txcookbuf[stli_txcooksize++] = ch;
1248 /*****************************************************************************/
1251 * Transfer characters from the local TX cooking buffer to the board.
1252 * We sort of ignore the tty that gets passed in here. We rely on the
1253 * info stored with the TX cook buffer to tell us which port to flush
1254 * the data on. In any case we clean out the TX cook buffer, for re-use
1258 static void stli_flushchars(struct tty_struct *tty)
1260 cdkhdr_t __iomem *hdrp;
1261 unsigned char __iomem *bits;
1262 cdkasy_t __iomem *ap;
1263 struct tty_struct *cooktty;
1264 struct stliport *portp;
1265 struct stlibrd *brdp;
1266 unsigned int len, stlen, head, tail, size, count, cooksize;
1268 unsigned char __iomem *shbuf;
1269 unsigned long flags;
1271 cooksize = stli_txcooksize;
1272 cooktty = stli_txcooktty;
1273 stli_txcooksize = 0;
1274 stli_txcookrealsize = 0;
1275 stli_txcooktty = NULL;
1277 if (cooktty == NULL)
1284 portp = tty->driver_data;
1287 if (portp->brdnr >= stli_nrbrds)
1289 brdp = stli_brds[portp->brdnr];
1293 spin_lock_irqsave(&brd_lock, flags);
1296 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1297 head = (unsigned int) readw(&ap->txq.head);
1298 tail = (unsigned int) readw(&ap->txq.tail);
1299 if (tail != ((unsigned int) readw(&ap->txq.tail)))
1300 tail = (unsigned int) readw(&ap->txq.tail);
1301 size = portp->txsize;
1303 len = size - (head - tail) - 1;
1304 stlen = size - head;
1306 len = tail - head - 1;
1310 len = min(len, cooksize);
1312 shbuf = EBRDGETMEMPTR(brdp, portp->txoffset);
1313 buf = stli_txcookbuf;
1316 stlen = min(len, stlen);
1317 memcpy_toio(shbuf + head, buf, stlen);
1328 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1329 writew(head, &ap->txq.head);
1331 if (test_bit(ST_TXBUSY, &portp->state)) {
1332 if (readl(&ap->changed.data) & DT_TXEMPTY)
1333 writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
1335 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1336 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1338 writeb(readb(bits) | portp->portbit, bits);
1339 set_bit(ST_TXBUSY, &portp->state);
1342 spin_unlock_irqrestore(&brd_lock, flags);
1345 /*****************************************************************************/
1347 static int stli_writeroom(struct tty_struct *tty)
1349 cdkasyrq_t __iomem *rp;
1350 struct stliport *portp;
1351 struct stlibrd *brdp;
1352 unsigned int head, tail, len;
1353 unsigned long flags;
1355 if (tty == stli_txcooktty) {
1356 if (stli_txcookrealsize != 0) {
1357 len = stli_txcookrealsize - stli_txcooksize;
1362 portp = tty->driver_data;
1365 if (portp->brdnr >= stli_nrbrds)
1367 brdp = stli_brds[portp->brdnr];
1371 spin_lock_irqsave(&brd_lock, flags);
1373 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1374 head = (unsigned int) readw(&rp->head);
1375 tail = (unsigned int) readw(&rp->tail);
1376 if (tail != ((unsigned int) readw(&rp->tail)))
1377 tail = (unsigned int) readw(&rp->tail);
1378 len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head);
1381 spin_unlock_irqrestore(&brd_lock, flags);
1383 if (tty == stli_txcooktty) {
1384 stli_txcookrealsize = len;
1385 len -= stli_txcooksize;
1390 /*****************************************************************************/
1393 * Return the number of characters in the transmit buffer. Normally we
1394 * will return the number of chars in the shared memory ring queue.
1395 * We need to kludge around the case where the shared memory buffer is
1396 * empty but not all characters have drained yet, for this case just
1397 * return that there is 1 character in the buffer!
1400 static int stli_charsinbuffer(struct tty_struct *tty)
1402 cdkasyrq_t __iomem *rp;
1403 struct stliport *portp;
1404 struct stlibrd *brdp;
1405 unsigned int head, tail, len;
1406 unsigned long flags;
1408 if (tty == stli_txcooktty)
1409 stli_flushchars(tty);
1410 portp = tty->driver_data;
1413 if (portp->brdnr >= stli_nrbrds)
1415 brdp = stli_brds[portp->brdnr];
1419 spin_lock_irqsave(&brd_lock, flags);
1421 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1422 head = (unsigned int) readw(&rp->head);
1423 tail = (unsigned int) readw(&rp->tail);
1424 if (tail != ((unsigned int) readw(&rp->tail)))
1425 tail = (unsigned int) readw(&rp->tail);
1426 len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head));
1427 if ((len == 0) && test_bit(ST_TXBUSY, &portp->state))
1430 spin_unlock_irqrestore(&brd_lock, flags);
1435 /*****************************************************************************/
1438 * Generate the serial struct info.
1441 static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp)
1443 struct serial_struct sio;
1444 struct stlibrd *brdp;
1446 memset(&sio, 0, sizeof(struct serial_struct));
1447 sio.type = PORT_UNKNOWN;
1448 sio.line = portp->portnr;
1450 sio.flags = portp->port.flags;
1451 sio.baud_base = portp->baud_base;
1452 sio.close_delay = portp->port.close_delay;
1453 sio.closing_wait = portp->closing_wait;
1454 sio.custom_divisor = portp->custom_divisor;
1455 sio.xmit_fifo_size = 0;
1458 brdp = stli_brds[portp->brdnr];
1460 sio.port = brdp->iobase;
1462 return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ?
1466 /*****************************************************************************/
1469 * Set port according to the serial struct info.
1470 * At this point we do not do any auto-configure stuff, so we will
1471 * just quietly ignore any requests to change irq, etc.
1474 static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp)
1476 struct serial_struct sio;
1478 struct stliport *portp = tty->driver_data;
1480 if (copy_from_user(&sio, sp, sizeof(struct serial_struct)))
1482 if (!capable(CAP_SYS_ADMIN)) {
1483 if ((sio.baud_base != portp->baud_base) ||
1484 (sio.close_delay != portp->port.close_delay) ||
1485 ((sio.flags & ~ASYNC_USR_MASK) !=
1486 (portp->port.flags & ~ASYNC_USR_MASK)))
1490 portp->port.flags = (portp->port.flags & ~ASYNC_USR_MASK) |
1491 (sio.flags & ASYNC_USR_MASK);
1492 portp->baud_base = sio.baud_base;
1493 portp->port.close_delay = sio.close_delay;
1494 portp->closing_wait = sio.closing_wait;
1495 portp->custom_divisor = sio.custom_divisor;
1497 if ((rc = stli_setport(tty)) < 0)
1502 /*****************************************************************************/
1504 static int stli_tiocmget(struct tty_struct *tty, struct file *file)
1506 struct stliport *portp = tty->driver_data;
1507 struct stlibrd *brdp;
1512 if (portp->brdnr >= stli_nrbrds)
1514 brdp = stli_brds[portp->brdnr];
1517 if (tty->flags & (1 << TTY_IO_ERROR))
1520 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS,
1521 &portp->asig, sizeof(asysigs_t), 1)) < 0)
1524 return stli_mktiocm(portp->asig.sigvalue);
1527 static int stli_tiocmset(struct tty_struct *tty, struct file *file,
1528 unsigned int set, unsigned int clear)
1530 struct stliport *portp = tty->driver_data;
1531 struct stlibrd *brdp;
1532 int rts = -1, dtr = -1;
1536 if (portp->brdnr >= stli_nrbrds)
1538 brdp = stli_brds[portp->brdnr];
1541 if (tty->flags & (1 << TTY_IO_ERROR))
1544 if (set & TIOCM_RTS)
1546 if (set & TIOCM_DTR)
1548 if (clear & TIOCM_RTS)
1550 if (clear & TIOCM_DTR)
1553 stli_mkasysigs(&portp->asig, dtr, rts);
1555 return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1556 sizeof(asysigs_t), 0);
1559 static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg)
1561 struct stliport *portp;
1562 struct stlibrd *brdp;
1564 void __user *argp = (void __user *)arg;
1566 portp = tty->driver_data;
1569 if (portp->brdnr >= stli_nrbrds)
1571 brdp = stli_brds[portp->brdnr];
1575 if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
1576 (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) {
1577 if (tty->flags & (1 << TTY_IO_ERROR))
1585 rc = stli_getserial(portp, argp);
1588 rc = stli_setserial(tty, argp);
1591 rc = put_user(portp->pflag, (unsigned __user *)argp);
1594 if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0)
1597 case COM_GETPORTSTATS:
1598 rc = stli_getportstats(tty, portp, argp);
1600 case COM_CLRPORTSTATS:
1601 rc = stli_clrportstats(portp, argp);
1607 case TIOCSERGSTRUCT:
1608 case TIOCSERGETMULTI:
1609 case TIOCSERSETMULTI:
1618 /*****************************************************************************/
1621 * This routine assumes that we have user context and can sleep.
1622 * Looks like it is true for the current ttys implementation..!!
1625 static void stli_settermios(struct tty_struct *tty, struct ktermios *old)
1627 struct stliport *portp;
1628 struct stlibrd *brdp;
1629 struct ktermios *tiosp;
1632 portp = tty->driver_data;
1635 if (portp->brdnr >= stli_nrbrds)
1637 brdp = stli_brds[portp->brdnr];
1641 tiosp = tty->termios;
1643 stli_mkasyport(tty, portp, &aport, tiosp);
1644 stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0);
1645 stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1);
1646 stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1647 sizeof(asysigs_t), 0);
1648 if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0))
1649 tty->hw_stopped = 0;
1650 if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL))
1651 wake_up_interruptible(&portp->port.open_wait);
1654 /*****************************************************************************/
1657 * Attempt to flow control who ever is sending us data. We won't really
1658 * do any flow control action here. We can't directly, and even if we
1659 * wanted to we would have to send a command to the slave. The slave
1660 * knows how to flow control, and will do so when its buffers reach its
1661 * internal high water marks. So what we will do is set a local state
1662 * bit that will stop us sending any RX data up from the poll routine
1663 * (which is the place where RX data from the slave is handled).
1666 static void stli_throttle(struct tty_struct *tty)
1668 struct stliport *portp = tty->driver_data;
1671 set_bit(ST_RXSTOP, &portp->state);
1674 /*****************************************************************************/
1677 * Unflow control the device sending us data... That means that all
1678 * we have to do is clear the RXSTOP state bit. The next poll call
1679 * will then be able to pass the RX data back up.
1682 static void stli_unthrottle(struct tty_struct *tty)
1684 struct stliport *portp = tty->driver_data;
1687 clear_bit(ST_RXSTOP, &portp->state);
1690 /*****************************************************************************/
1693 * Stop the transmitter.
1696 static void stli_stop(struct tty_struct *tty)
1700 /*****************************************************************************/
1703 * Start the transmitter again.
1706 static void stli_start(struct tty_struct *tty)
1710 /*****************************************************************************/
1714 * Hangup this port. This is pretty much like closing the port, only
1715 * a little more brutal. No waiting for data to drain. Shutdown the
1716 * port and maybe drop signals. This is rather tricky really. We want
1717 * to close the port as well.
1720 static void stli_hangup(struct tty_struct *tty)
1722 struct stliport *portp = tty->driver_data;
1723 tty_port_hangup(&portp->port);
1726 /*****************************************************************************/
1729 * Flush characters from the lower buffer. We may not have user context
1730 * so we cannot sleep waiting for it to complete. Also we need to check
1731 * if there is chars for this port in the TX cook buffer, and flush them
1735 static void stli_flushbuffer(struct tty_struct *tty)
1737 struct stliport *portp;
1738 struct stlibrd *brdp;
1739 unsigned long ftype, flags;
1741 portp = tty->driver_data;
1744 if (portp->brdnr >= stli_nrbrds)
1746 brdp = stli_brds[portp->brdnr];
1750 spin_lock_irqsave(&brd_lock, flags);
1751 if (tty == stli_txcooktty) {
1752 stli_txcooktty = NULL;
1753 stli_txcooksize = 0;
1754 stli_txcookrealsize = 0;
1756 if (test_bit(ST_CMDING, &portp->state)) {
1757 set_bit(ST_DOFLUSHTX, &portp->state);
1760 if (test_bit(ST_DOFLUSHRX, &portp->state)) {
1762 clear_bit(ST_DOFLUSHRX, &portp->state);
1764 __stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0);
1766 spin_unlock_irqrestore(&brd_lock, flags);
1770 /*****************************************************************************/
1772 static int stli_breakctl(struct tty_struct *tty, int state)
1774 struct stlibrd *brdp;
1775 struct stliport *portp;
1778 portp = tty->driver_data;
1781 if (portp->brdnr >= stli_nrbrds)
1783 brdp = stli_brds[portp->brdnr];
1787 arg = (state == -1) ? BREAKON : BREAKOFF;
1788 stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0);
1792 /*****************************************************************************/
1794 static void stli_waituntilsent(struct tty_struct *tty, int timeout)
1796 struct stliport *portp;
1799 portp = tty->driver_data;
1805 tend = jiffies + timeout;
1807 while (test_bit(ST_TXBUSY, &portp->state)) {
1808 if (signal_pending(current))
1810 msleep_interruptible(20);
1811 if (time_after_eq(jiffies, tend))
1816 /*****************************************************************************/
1818 static void stli_sendxchar(struct tty_struct *tty, char ch)
1820 struct stlibrd *brdp;
1821 struct stliport *portp;
1824 portp = tty->driver_data;
1827 if (portp->brdnr >= stli_nrbrds)
1829 brdp = stli_brds[portp->brdnr];
1833 memset(&actrl, 0, sizeof(asyctrl_t));
1834 if (ch == STOP_CHAR(tty)) {
1835 actrl.rxctrl = CT_STOPFLOW;
1836 } else if (ch == START_CHAR(tty)) {
1837 actrl.rxctrl = CT_STARTFLOW;
1839 actrl.txctrl = CT_SENDCHR;
1842 stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
1845 static void stli_portinfo(struct seq_file *m, struct stlibrd *brdp, struct stliport *portp, int portnr)
1850 rc = stli_portcmdstats(NULL, portp);
1853 if (test_bit(BST_STARTED, &brdp->state)) {
1854 switch (stli_comstats.hwid) {
1855 case 0: uart = "2681"; break;
1856 case 1: uart = "SC26198"; break;
1857 default:uart = "CD1400"; break;
1860 seq_printf(m, "%d: uart:%s ", portnr, uart);
1862 if (test_bit(BST_STARTED, &brdp->state) && rc >= 0) {
1865 seq_printf(m, "tx:%d rx:%d", (int) stli_comstats.txtotal,
1866 (int) stli_comstats.rxtotal);
1868 if (stli_comstats.rxframing)
1869 seq_printf(m, " fe:%d",
1870 (int) stli_comstats.rxframing);
1871 if (stli_comstats.rxparity)
1872 seq_printf(m, " pe:%d",
1873 (int) stli_comstats.rxparity);
1874 if (stli_comstats.rxbreaks)
1875 seq_printf(m, " brk:%d",
1876 (int) stli_comstats.rxbreaks);
1877 if (stli_comstats.rxoverrun)
1878 seq_printf(m, " oe:%d",
1879 (int) stli_comstats.rxoverrun);
1882 if (stli_comstats.signals & TIOCM_RTS) {
1883 seq_printf(m, "%c%s", sep, "RTS");
1886 if (stli_comstats.signals & TIOCM_CTS) {
1887 seq_printf(m, "%c%s", sep, "CTS");
1890 if (stli_comstats.signals & TIOCM_DTR) {
1891 seq_printf(m, "%c%s", sep, "DTR");
1894 if (stli_comstats.signals & TIOCM_CD) {
1895 seq_printf(m, "%c%s", sep, "DCD");
1898 if (stli_comstats.signals & TIOCM_DSR) {
1899 seq_printf(m, "%c%s", sep, "DSR");
1906 /*****************************************************************************/
1909 * Port info, read from the /proc file system.
1912 static int stli_proc_show(struct seq_file *m, void *v)
1914 struct stlibrd *brdp;
1915 struct stliport *portp;
1916 unsigned int brdnr, portnr, totalport;
1920 seq_printf(m, "%s: version %s\n", stli_drvtitle, stli_drvversion);
1923 * We scan through for each board, panel and port. The offset is
1924 * calculated on the fly, and irrelevant ports are skipped.
1926 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
1927 brdp = stli_brds[brdnr];
1930 if (brdp->state == 0)
1933 totalport = brdnr * STL_MAXPORTS;
1934 for (portnr = 0; (portnr < brdp->nrports); portnr++,
1936 portp = brdp->ports[portnr];
1939 stli_portinfo(m, brdp, portp, totalport);
1945 static int stli_proc_open(struct inode *inode, struct file *file)
1947 return single_open(file, stli_proc_show, NULL);
1950 static const struct file_operations stli_proc_fops = {
1951 .owner = THIS_MODULE,
1952 .open = stli_proc_open,
1954 .llseek = seq_lseek,
1955 .release = single_release,
1958 /*****************************************************************************/
1961 * Generic send command routine. This will send a message to the slave,
1962 * of the specified type with the specified argument. Must be very
1963 * careful of data that will be copied out from shared memory -
1964 * containing command results. The command completion is all done from
1965 * a poll routine that does not have user context. Therefore you cannot
1966 * copy back directly into user space, or to the kernel stack of a
1967 * process. This routine does not sleep, so can be called from anywhere.
1969 * The caller must hold the brd_lock (see also stli_sendcmd the usual
1973 static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
1975 cdkhdr_t __iomem *hdrp;
1976 cdkctrl_t __iomem *cp;
1977 unsigned char __iomem *bits;
1979 if (test_bit(ST_CMDING, &portp->state)) {
1980 printk(KERN_ERR "istallion: command already busy, cmd=%x!\n",
1986 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1988 memcpy_toio((void __iomem *) &(cp->args[0]), arg, size);
1991 portp->argsize = size;
1994 writel(0, &cp->status);
1995 writel(cmd, &cp->cmd);
1996 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1997 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1999 writeb(readb(bits) | portp->portbit, bits);
2000 set_bit(ST_CMDING, &portp->state);
2004 static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
2006 unsigned long flags;
2008 spin_lock_irqsave(&brd_lock, flags);
2009 __stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
2010 spin_unlock_irqrestore(&brd_lock, flags);
2013 /*****************************************************************************/
2016 * Read data from shared memory. This assumes that the shared memory
2017 * is enabled and that interrupts are off. Basically we just empty out
2018 * the shared memory buffer into the tty buffer. Must be careful to
2019 * handle the case where we fill up the tty buffer, but still have
2020 * more chars to unload.
2023 static void stli_read(struct stlibrd *brdp, struct stliport *portp)
2025 cdkasyrq_t __iomem *rp;
2026 char __iomem *shbuf;
2027 struct tty_struct *tty;
2028 unsigned int head, tail, size;
2029 unsigned int len, stlen;
2031 if (test_bit(ST_RXSTOP, &portp->state))
2033 tty = tty_port_tty_get(&portp->port);
2037 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2038 head = (unsigned int) readw(&rp->head);
2039 if (head != ((unsigned int) readw(&rp->head)))
2040 head = (unsigned int) readw(&rp->head);
2041 tail = (unsigned int) readw(&rp->tail);
2042 size = portp->rxsize;
2047 len = size - (tail - head);
2048 stlen = size - tail;
2051 len = tty_buffer_request_room(tty, len);
2053 shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset);
2056 unsigned char *cptr;
2058 stlen = min(len, stlen);
2059 tty_prepare_flip_string(tty, &cptr, stlen);
2060 memcpy_fromio(cptr, shbuf + tail, stlen);
2068 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2069 writew(tail, &rp->tail);
2072 set_bit(ST_RXING, &portp->state);
2074 tty_schedule_flip(tty);
2078 /*****************************************************************************/
2081 * Set up and carry out any delayed commands. There is only a small set
2082 * of slave commands that can be done "off-level". So it is not too
2083 * difficult to deal with them here.
2086 static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp)
2090 if (test_bit(ST_DOSIGS, &portp->state)) {
2091 if (test_bit(ST_DOFLUSHTX, &portp->state) &&
2092 test_bit(ST_DOFLUSHRX, &portp->state))
2093 cmd = A_SETSIGNALSF;
2094 else if (test_bit(ST_DOFLUSHTX, &portp->state))
2095 cmd = A_SETSIGNALSFTX;
2096 else if (test_bit(ST_DOFLUSHRX, &portp->state))
2097 cmd = A_SETSIGNALSFRX;
2100 clear_bit(ST_DOFLUSHTX, &portp->state);
2101 clear_bit(ST_DOFLUSHRX, &portp->state);
2102 clear_bit(ST_DOSIGS, &portp->state);
2103 memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig,
2105 writel(0, &cp->status);
2106 writel(cmd, &cp->cmd);
2107 set_bit(ST_CMDING, &portp->state);
2108 } else if (test_bit(ST_DOFLUSHTX, &portp->state) ||
2109 test_bit(ST_DOFLUSHRX, &portp->state)) {
2110 cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0);
2111 cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0);
2112 clear_bit(ST_DOFLUSHTX, &portp->state);
2113 clear_bit(ST_DOFLUSHRX, &portp->state);
2114 memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int));
2115 writel(0, &cp->status);
2116 writel(A_FLUSH, &cp->cmd);
2117 set_bit(ST_CMDING, &portp->state);
2121 /*****************************************************************************/
2124 * Host command service checking. This handles commands or messages
2125 * coming from the slave to the host. Must have board shared memory
2126 * enabled and interrupts off when called. Notice that by servicing the
2127 * read data last we don't need to change the shared memory pointer
2128 * during processing (which is a slow IO operation).
2129 * Return value indicates if this port is still awaiting actions from
2130 * the slave (like open, command, or even TX data being sent). If 0
2131 * then port is still busy, otherwise no longer busy.
2134 static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp)
2136 cdkasy_t __iomem *ap;
2137 cdkctrl_t __iomem *cp;
2138 struct tty_struct *tty;
2140 unsigned long oldsigs;
2143 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
2147 * Check if we are waiting for an open completion message.
2149 if (test_bit(ST_OPENING, &portp->state)) {
2150 rc = readl(&cp->openarg);
2151 if (readb(&cp->open) == 0 && rc != 0) {
2154 writel(0, &cp->openarg);
2156 clear_bit(ST_OPENING, &portp->state);
2157 wake_up_interruptible(&portp->raw_wait);
2162 * Check if we are waiting for a close completion message.
2164 if (test_bit(ST_CLOSING, &portp->state)) {
2165 rc = (int) readl(&cp->closearg);
2166 if (readb(&cp->close) == 0 && rc != 0) {
2169 writel(0, &cp->closearg);
2171 clear_bit(ST_CLOSING, &portp->state);
2172 wake_up_interruptible(&portp->raw_wait);
2177 * Check if we are waiting for a command completion message. We may
2178 * need to copy out the command results associated with this command.
2180 if (test_bit(ST_CMDING, &portp->state)) {
2181 rc = readl(&cp->status);
2182 if (readl(&cp->cmd) == 0 && rc != 0) {
2185 if (portp->argp != NULL) {
2186 memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]),
2190 writel(0, &cp->status);
2192 clear_bit(ST_CMDING, &portp->state);
2193 stli_dodelaycmd(portp, cp);
2194 wake_up_interruptible(&portp->raw_wait);
2199 * Check for any notification messages ready. This includes lots of
2200 * different types of events - RX chars ready, RX break received,
2201 * TX data low or empty in the slave, modem signals changed state.
2208 tty = tty_port_tty_get(&portp->port);
2210 if (nt.signal & SG_DCD) {
2211 oldsigs = portp->sigs;
2212 portp->sigs = stli_mktiocm(nt.sigvalue);
2213 clear_bit(ST_GETSIGS, &portp->state);
2214 if ((portp->sigs & TIOCM_CD) &&
2215 ((oldsigs & TIOCM_CD) == 0))
2216 wake_up_interruptible(&portp->port.open_wait);
2217 if ((oldsigs & TIOCM_CD) &&
2218 ((portp->sigs & TIOCM_CD) == 0)) {
2219 if (portp->port.flags & ASYNC_CHECK_CD) {
2226 if (nt.data & DT_TXEMPTY)
2227 clear_bit(ST_TXBUSY, &portp->state);
2228 if (nt.data & (DT_TXEMPTY | DT_TXLOW)) {
2235 if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) {
2237 tty_insert_flip_char(tty, 0, TTY_BREAK);
2238 if (portp->port.flags & ASYNC_SAK) {
2242 tty_schedule_flip(tty);
2247 if (nt.data & DT_RXBUSY) {
2249 stli_read(brdp, portp);
2254 * It might seem odd that we are checking for more RX chars here.
2255 * But, we need to handle the case where the tty buffer was previously
2256 * filled, but we had more characters to pass up. The slave will not
2257 * send any more RX notify messages until the RX buffer has been emptied.
2258 * But it will leave the service bits on (since the buffer is not empty).
2259 * So from here we can try to process more RX chars.
2261 if ((!donerx) && test_bit(ST_RXING, &portp->state)) {
2262 clear_bit(ST_RXING, &portp->state);
2263 stli_read(brdp, portp);
2266 return((test_bit(ST_OPENING, &portp->state) ||
2267 test_bit(ST_CLOSING, &portp->state) ||
2268 test_bit(ST_CMDING, &portp->state) ||
2269 test_bit(ST_TXBUSY, &portp->state) ||
2270 test_bit(ST_RXING, &portp->state)) ? 0 : 1);
2273 /*****************************************************************************/
2276 * Service all ports on a particular board. Assumes that the boards
2277 * shared memory is enabled, and that the page pointer is pointed
2278 * at the cdk header structure.
2281 static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp)
2283 struct stliport *portp;
2284 unsigned char hostbits[(STL_MAXCHANS / 8) + 1];
2285 unsigned char slavebits[(STL_MAXCHANS / 8) + 1];
2286 unsigned char __iomem *slavep;
2287 int bitpos, bitat, bitsize;
2288 int channr, nrdevs, slavebitchange;
2290 bitsize = brdp->bitsize;
2291 nrdevs = brdp->nrdevs;
2294 * Check if slave wants any service. Basically we try to do as
2295 * little work as possible here. There are 2 levels of service
2296 * bits. So if there is nothing to do we bail early. We check
2297 * 8 service bits at a time in the inner loop, so we can bypass
2298 * the lot if none of them want service.
2300 memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset),
2303 memset(&slavebits[0], 0, bitsize);
2306 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2307 if (hostbits[bitpos] == 0)
2309 channr = bitpos * 8;
2310 for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) {
2311 if (hostbits[bitpos] & bitat) {
2312 portp = brdp->ports[(channr - 1)];
2313 if (stli_hostcmd(brdp, portp)) {
2315 slavebits[bitpos] |= bitat;
2322 * If any of the ports are no longer busy then update them in the
2323 * slave request bits. We need to do this after, since a host port
2324 * service may initiate more slave requests.
2326 if (slavebitchange) {
2327 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2328 slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset;
2329 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2330 if (readb(slavebits + bitpos))
2331 writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos);
2336 /*****************************************************************************/
2339 * Driver poll routine. This routine polls the boards in use and passes
2340 * messages back up to host when necessary. This is actually very
2341 * CPU efficient, since we will always have the kernel poll clock, it
2342 * adds only a few cycles when idle (since board service can be
2343 * determined very easily), but when loaded generates no interrupts
2344 * (with their expensive associated context change).
2347 static void stli_poll(unsigned long arg)
2349 cdkhdr_t __iomem *hdrp;
2350 struct stlibrd *brdp;
2353 mod_timer(&stli_timerlist, STLI_TIMEOUT);
2356 * Check each board and do any servicing required.
2358 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
2359 brdp = stli_brds[brdnr];
2362 if (!test_bit(BST_STARTED, &brdp->state))
2365 spin_lock(&brd_lock);
2367 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2368 if (readb(&hdrp->hostreq))
2369 stli_brdpoll(brdp, hdrp);
2371 spin_unlock(&brd_lock);
2375 /*****************************************************************************/
2378 * Translate the termios settings into the port setting structure of
2382 static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp,
2383 asyport_t *pp, struct ktermios *tiosp)
2385 memset(pp, 0, sizeof(asyport_t));
2388 * Start of by setting the baud, char size, parity and stop bit info.
2390 pp->baudout = tty_get_baud_rate(tty);
2391 if ((tiosp->c_cflag & CBAUD) == B38400) {
2392 if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
2393 pp->baudout = 57600;
2394 else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
2395 pp->baudout = 115200;
2396 else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
2397 pp->baudout = 230400;
2398 else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
2399 pp->baudout = 460800;
2400 else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)
2401 pp->baudout = (portp->baud_base / portp->custom_divisor);
2403 if (pp->baudout > STL_MAXBAUD)
2404 pp->baudout = STL_MAXBAUD;
2405 pp->baudin = pp->baudout;
2407 switch (tiosp->c_cflag & CSIZE) {
2422 if (tiosp->c_cflag & CSTOPB)
2423 pp->stopbs = PT_STOP2;
2425 pp->stopbs = PT_STOP1;
2427 if (tiosp->c_cflag & PARENB) {
2428 if (tiosp->c_cflag & PARODD)
2429 pp->parity = PT_ODDPARITY;
2431 pp->parity = PT_EVENPARITY;
2433 pp->parity = PT_NOPARITY;
2437 * Set up any flow control options enabled.
2439 if (tiosp->c_iflag & IXON) {
2441 if (tiosp->c_iflag & IXANY)
2442 pp->flow |= F_IXANY;
2444 if (tiosp->c_cflag & CRTSCTS)
2445 pp->flow |= (F_RTSFLOW | F_CTSFLOW);
2447 pp->startin = tiosp->c_cc[VSTART];
2448 pp->stopin = tiosp->c_cc[VSTOP];
2449 pp->startout = tiosp->c_cc[VSTART];
2450 pp->stopout = tiosp->c_cc[VSTOP];
2453 * Set up the RX char marking mask with those RX error types we must
2454 * catch. We can get the slave to help us out a little here, it will
2455 * ignore parity errors and breaks for us, and mark parity errors in
2458 if (tiosp->c_iflag & IGNPAR)
2459 pp->iflag |= FI_IGNRXERRS;
2460 if (tiosp->c_iflag & IGNBRK)
2461 pp->iflag |= FI_IGNBREAK;
2463 portp->rxmarkmsk = 0;
2464 if (tiosp->c_iflag & (INPCK | PARMRK))
2465 pp->iflag |= FI_1MARKRXERRS;
2466 if (tiosp->c_iflag & BRKINT)
2467 portp->rxmarkmsk |= BRKINT;
2470 * Set up clocal processing as required.
2472 if (tiosp->c_cflag & CLOCAL)
2473 portp->port.flags &= ~ASYNC_CHECK_CD;
2475 portp->port.flags |= ASYNC_CHECK_CD;
2478 * Transfer any persistent flags into the asyport structure.
2480 pp->pflag = (portp->pflag & 0xffff);
2481 pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0;
2482 pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0;
2483 pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0;
2486 /*****************************************************************************/
2489 * Construct a slave signals structure for setting the DTR and RTS
2490 * signals as specified.
2493 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts)
2495 memset(sp, 0, sizeof(asysigs_t));
2497 sp->signal |= SG_DTR;
2498 sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0);
2501 sp->signal |= SG_RTS;
2502 sp->sigvalue |= ((rts > 0) ? SG_RTS : 0);
2506 /*****************************************************************************/
2509 * Convert the signals returned from the slave into a local TIOCM type
2510 * signals value. We keep them locally in TIOCM format.
2513 static long stli_mktiocm(unsigned long sigvalue)
2516 tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0);
2517 tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0);
2518 tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0);
2519 tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0);
2520 tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0);
2521 tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0);
2525 /*****************************************************************************/
2528 * All panels and ports actually attached have been worked out. All
2529 * we need to do here is set up the appropriate per port data structures.
2532 static int stli_initports(struct stlibrd *brdp)
2534 struct stliport *portp;
2535 unsigned int i, panelnr, panelport;
2537 for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) {
2538 portp = kzalloc(sizeof(struct stliport), GFP_KERNEL);
2540 printk(KERN_WARNING "istallion: failed to allocate port structure\n");
2543 tty_port_init(&portp->port);
2544 portp->port.ops = &stli_port_ops;
2545 portp->magic = STLI_PORTMAGIC;
2547 portp->brdnr = brdp->brdnr;
2548 portp->panelnr = panelnr;
2549 portp->baud_base = STL_BAUDBASE;
2550 portp->port.close_delay = STL_CLOSEDELAY;
2551 portp->closing_wait = 30 * HZ;
2552 init_waitqueue_head(&portp->port.open_wait);
2553 init_waitqueue_head(&portp->port.close_wait);
2554 init_waitqueue_head(&portp->raw_wait);
2556 if (panelport >= brdp->panels[panelnr]) {
2560 brdp->ports[i] = portp;
2566 /*****************************************************************************/
2569 * All the following routines are board specific hardware operations.
2572 static void stli_ecpinit(struct stlibrd *brdp)
2574 unsigned long memconf;
2576 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
2578 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2581 memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT;
2582 outb(memconf, (brdp->iobase + ECP_ATMEMAR));
2585 /*****************************************************************************/
2587 static void stli_ecpenable(struct stlibrd *brdp)
2589 outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR));
2592 /*****************************************************************************/
2594 static void stli_ecpdisable(struct stlibrd *brdp)
2596 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2599 /*****************************************************************************/
2601 static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2606 if (offset > brdp->memsize) {
2607 printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2608 "range at line=%d(%d), brd=%d\n",
2609 (int) offset, line, __LINE__, brdp->brdnr);
2613 ptr = brdp->membase + (offset % ECP_ATPAGESIZE);
2614 val = (unsigned char) (offset / ECP_ATPAGESIZE);
2616 outb(val, (brdp->iobase + ECP_ATMEMPR));
2620 /*****************************************************************************/
2622 static void stli_ecpreset(struct stlibrd *brdp)
2624 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
2626 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2630 /*****************************************************************************/
2632 static void stli_ecpintr(struct stlibrd *brdp)
2634 outb(0x1, brdp->iobase);
2637 /*****************************************************************************/
2640 * The following set of functions act on ECP EISA boards.
2643 static void stli_ecpeiinit(struct stlibrd *brdp)
2645 unsigned long memconf;
2647 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
2648 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
2650 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2653 memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL;
2654 outb(memconf, (brdp->iobase + ECP_EIMEMARL));
2655 memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH;
2656 outb(memconf, (brdp->iobase + ECP_EIMEMARH));
2659 /*****************************************************************************/
2661 static void stli_ecpeienable(struct stlibrd *brdp)
2663 outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR));
2666 /*****************************************************************************/
2668 static void stli_ecpeidisable(struct stlibrd *brdp)
2670 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2673 /*****************************************************************************/
2675 static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2680 if (offset > brdp->memsize) {
2681 printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2682 "range at line=%d(%d), brd=%d\n",
2683 (int) offset, line, __LINE__, brdp->brdnr);
2687 ptr = brdp->membase + (offset % ECP_EIPAGESIZE);
2688 if (offset < ECP_EIPAGESIZE)
2691 val = ECP_EIENABLE | 0x40;
2693 outb(val, (brdp->iobase + ECP_EICONFR));
2697 /*****************************************************************************/
2699 static void stli_ecpeireset(struct stlibrd *brdp)
2701 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
2703 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
2707 /*****************************************************************************/
2710 * The following set of functions act on ECP MCA boards.
2713 static void stli_ecpmcenable(struct stlibrd *brdp)
2715 outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR));
2718 /*****************************************************************************/
2720 static void stli_ecpmcdisable(struct stlibrd *brdp)
2722 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
2725 /*****************************************************************************/
2727 static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2732 if (offset > brdp->memsize) {
2733 printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2734 "range at line=%d(%d), brd=%d\n",
2735 (int) offset, line, __LINE__, brdp->brdnr);
2739 ptr = brdp->membase + (offset % ECP_MCPAGESIZE);
2740 val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE;
2742 outb(val, (brdp->iobase + ECP_MCCONFR));
2746 /*****************************************************************************/
2748 static void stli_ecpmcreset(struct stlibrd *brdp)
2750 outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR));
2752 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
2756 /*****************************************************************************/
2759 * The following set of functions act on ECP PCI boards.
2762 static void stli_ecppciinit(struct stlibrd *brdp)
2764 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
2766 outb(0, (brdp->iobase + ECP_PCICONFR));
2770 /*****************************************************************************/
2772 static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2777 if (offset > brdp->memsize) {
2778 printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2779 "range at line=%d(%d), board=%d\n",
2780 (int) offset, line, __LINE__, brdp->brdnr);
2784 ptr = brdp->membase + (offset % ECP_PCIPAGESIZE);
2785 val = (offset / ECP_PCIPAGESIZE) << 1;
2787 outb(val, (brdp->iobase + ECP_PCICONFR));
2791 /*****************************************************************************/
2793 static void stli_ecppcireset(struct stlibrd *brdp)
2795 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
2797 outb(0, (brdp->iobase + ECP_PCICONFR));
2801 /*****************************************************************************/
2804 * The following routines act on ONboards.
2807 static void stli_onbinit(struct stlibrd *brdp)
2809 unsigned long memconf;
2811 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
2813 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
2816 memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT;
2817 outb(memconf, (brdp->iobase + ONB_ATMEMAR));
2818 outb(0x1, brdp->iobase);
2822 /*****************************************************************************/
2824 static void stli_onbenable(struct stlibrd *brdp)
2826 outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR));
2829 /*****************************************************************************/
2831 static void stli_onbdisable(struct stlibrd *brdp)
2833 outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR));
2836 /*****************************************************************************/
2838 static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2842 if (offset > brdp->memsize) {
2843 printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2844 "range at line=%d(%d), brd=%d\n",
2845 (int) offset, line, __LINE__, brdp->brdnr);
2848 ptr = brdp->membase + (offset % ONB_ATPAGESIZE);
2853 /*****************************************************************************/
2855 static void stli_onbreset(struct stlibrd *brdp)
2857 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
2859 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
2863 /*****************************************************************************/
2866 * The following routines act on ONboard EISA.
2869 static void stli_onbeinit(struct stlibrd *brdp)
2871 unsigned long memconf;
2873 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
2874 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
2876 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
2879 memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL;
2880 outb(memconf, (brdp->iobase + ONB_EIMEMARL));
2881 memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH;
2882 outb(memconf, (brdp->iobase + ONB_EIMEMARH));
2883 outb(0x1, brdp->iobase);
2887 /*****************************************************************************/
2889 static void stli_onbeenable(struct stlibrd *brdp)
2891 outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR));
2894 /*****************************************************************************/
2896 static void stli_onbedisable(struct stlibrd *brdp)
2898 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
2901 /*****************************************************************************/
2903 static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2908 if (offset > brdp->memsize) {
2909 printk(KERN_ERR "istallion: shared memory pointer=%x out of "
2910 "range at line=%d(%d), brd=%d\n",
2911 (int) offset, line, __LINE__, brdp->brdnr);
2915 ptr = brdp->membase + (offset % ONB_EIPAGESIZE);
2916 if (offset < ONB_EIPAGESIZE)
2919 val = ONB_EIENABLE | 0x40;
2921 outb(val, (brdp->iobase + ONB_EICONFR));
2925 /*****************************************************************************/
2927 static void stli_onbereset(struct stlibrd *brdp)
2929 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
2931 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
2935 /*****************************************************************************/
2938 * The following routines act on Brumby boards.
2941 static void stli_bbyinit(struct stlibrd *brdp)
2943 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
2945 outb(0, (brdp->iobase + BBY_ATCONFR));
2947 outb(0x1, brdp->iobase);
2951 /*****************************************************************************/
2953 static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2958 BUG_ON(offset > brdp->memsize);
2960 ptr = brdp->membase + (offset % BBY_PAGESIZE);
2961 val = (unsigned char) (offset / BBY_PAGESIZE);
2962 outb(val, (brdp->iobase + BBY_ATCONFR));
2966 /*****************************************************************************/
2968 static void stli_bbyreset(struct stlibrd *brdp)
2970 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
2972 outb(0, (brdp->iobase + BBY_ATCONFR));
2976 /*****************************************************************************/
2979 * The following routines act on original old Stallion boards.
2982 static void stli_stalinit(struct stlibrd *brdp)
2984 outb(0x1, brdp->iobase);
2988 /*****************************************************************************/
2990 static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
2992 BUG_ON(offset > brdp->memsize);
2993 return brdp->membase + (offset % STAL_PAGESIZE);
2996 /*****************************************************************************/
2998 static void stli_stalreset(struct stlibrd *brdp)
3002 vecp = (u32 __iomem *) (brdp->membase + 0x30);
3003 writel(0xffff0000, vecp);
3004 outb(0, brdp->iobase);
3008 /*****************************************************************************/
3011 * Try to find an ECP board and initialize it. This handles only ECP
3015 static int stli_initecp(struct stlibrd *brdp)
3018 cdkecpsig_t __iomem *sigsp;
3019 unsigned int status, nxtid;
3021 int retval, panelnr, nrports;
3023 if ((brdp->iobase == 0) || (brdp->memaddr == 0)) {
3028 brdp->iosize = ECP_IOSIZE;
3030 if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
3036 * Based on the specific board type setup the common vars to access
3037 * and enable shared memory. Set all board specific information now
3040 switch (brdp->brdtype) {
3042 brdp->memsize = ECP_MEMSIZE;
3043 brdp->pagesize = ECP_ATPAGESIZE;
3044 brdp->init = stli_ecpinit;
3045 brdp->enable = stli_ecpenable;
3046 brdp->reenable = stli_ecpenable;
3047 brdp->disable = stli_ecpdisable;
3048 brdp->getmemptr = stli_ecpgetmemptr;
3049 brdp->intr = stli_ecpintr;
3050 brdp->reset = stli_ecpreset;
3051 name = "serial(EC8/64)";
3055 brdp->memsize = ECP_MEMSIZE;
3056 brdp->pagesize = ECP_EIPAGESIZE;
3057 brdp->init = stli_ecpeiinit;
3058 brdp->enable = stli_ecpeienable;
3059 brdp->reenable = stli_ecpeienable;
3060 brdp->disable = stli_ecpeidisable;
3061 brdp->getmemptr = stli_ecpeigetmemptr;
3062 brdp->intr = stli_ecpintr;
3063 brdp->reset = stli_ecpeireset;
3064 name = "serial(EC8/64-EI)";
3068 brdp->memsize = ECP_MEMSIZE;
3069 brdp->pagesize = ECP_MCPAGESIZE;
3071 brdp->enable = stli_ecpmcenable;
3072 brdp->reenable = stli_ecpmcenable;
3073 brdp->disable = stli_ecpmcdisable;
3074 brdp->getmemptr = stli_ecpmcgetmemptr;
3075 brdp->intr = stli_ecpintr;
3076 brdp->reset = stli_ecpmcreset;
3077 name = "serial(EC8/64-MCA)";
3081 brdp->memsize = ECP_PCIMEMSIZE;
3082 brdp->pagesize = ECP_PCIPAGESIZE;
3083 brdp->init = stli_ecppciinit;
3084 brdp->enable = NULL;
3085 brdp->reenable = NULL;
3086 brdp->disable = NULL;
3087 brdp->getmemptr = stli_ecppcigetmemptr;
3088 brdp->intr = stli_ecpintr;
3089 brdp->reset = stli_ecppcireset;
3090 name = "serial(EC/RA-PCI)";
3099 * The per-board operations structure is all set up, so now let's go
3100 * and get the board operational. Firstly initialize board configuration
3101 * registers. Set the memory mapping info so we can get at the boards
3106 brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize);
3107 if (brdp->membase == NULL) {
3113 * Now that all specific code is set up, enable the shared memory and
3114 * look for the a signature area that will tell us exactly what board
3115 * this is, and what it is connected to it.
3118 sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3119 memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t));
3122 if (sig.magic != cpu_to_le32(ECP_MAGIC)) {
3128 * Scan through the signature looking at the panels connected to the
3129 * board. Calculate the total number of ports as we go.
3131 for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) {
3132 status = sig.panelid[nxtid];
3133 if ((status & ECH_PNLIDMASK) != nxtid)
3136 brdp->panelids[panelnr] = status;
3137 nrports = (status & ECH_PNL16PORT) ? 16 : 8;
3138 if ((nrports == 16) && ((status & ECH_PNLXPID) == 0))
3140 brdp->panels[panelnr] = nrports;
3141 brdp->nrports += nrports;
3147 set_bit(BST_FOUND, &brdp->state);
3150 iounmap(brdp->membase);
3151 brdp->membase = NULL;
3153 release_region(brdp->iobase, brdp->iosize);
3158 /*****************************************************************************/
3161 * Try to find an ONboard, Brumby or Stallion board and initialize it.
3162 * This handles only these board types.
3165 static int stli_initonb(struct stlibrd *brdp)
3168 cdkonbsig_t __iomem *sigsp;
3173 * Do a basic sanity check on the IO and memory addresses.
3175 if (brdp->iobase == 0 || brdp->memaddr == 0) {
3180 brdp->iosize = ONB_IOSIZE;
3182 if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
3188 * Based on the specific board type setup the common vars to access
3189 * and enable shared memory. Set all board specific information now
3192 switch (brdp->brdtype) {
3195 brdp->memsize = ONB_MEMSIZE;
3196 brdp->pagesize = ONB_ATPAGESIZE;
3197 brdp->init = stli_onbinit;
3198 brdp->enable = stli_onbenable;
3199 brdp->reenable = stli_onbenable;
3200 brdp->disable = stli_onbdisable;
3201 brdp->getmemptr = stli_onbgetmemptr;
3202 brdp->intr = stli_ecpintr;
3203 brdp->reset = stli_onbreset;
3204 if (brdp->memaddr > 0x100000)
3205 brdp->enabval = ONB_MEMENABHI;
3207 brdp->enabval = ONB_MEMENABLO;
3208 name = "serial(ONBoard)";
3212 brdp->memsize = ONB_EIMEMSIZE;
3213 brdp->pagesize = ONB_EIPAGESIZE;
3214 brdp->init = stli_onbeinit;
3215 brdp->enable = stli_onbeenable;
3216 brdp->reenable = stli_onbeenable;
3217 brdp->disable = stli_onbedisable;
3218 brdp->getmemptr = stli_onbegetmemptr;
3219 brdp->intr = stli_ecpintr;
3220 brdp->reset = stli_onbereset;
3221 name = "serial(ONBoard/E)";
3225 brdp->memsize = BBY_MEMSIZE;
3226 brdp->pagesize = BBY_PAGESIZE;
3227 brdp->init = stli_bbyinit;
3228 brdp->enable = NULL;
3229 brdp->reenable = NULL;
3230 brdp->disable = NULL;
3231 brdp->getmemptr = stli_bbygetmemptr;
3232 brdp->intr = stli_ecpintr;
3233 brdp->reset = stli_bbyreset;
3234 name = "serial(Brumby)";
3238 brdp->memsize = STAL_MEMSIZE;
3239 brdp->pagesize = STAL_PAGESIZE;
3240 brdp->init = stli_stalinit;
3241 brdp->enable = NULL;
3242 brdp->reenable = NULL;
3243 brdp->disable = NULL;
3244 brdp->getmemptr = stli_stalgetmemptr;
3245 brdp->intr = stli_ecpintr;
3246 brdp->reset = stli_stalreset;
3247 name = "serial(Stallion)";
3256 * The per-board operations structure is all set up, so now let's go
3257 * and get the board operational. Firstly initialize board configuration
3258 * registers. Set the memory mapping info so we can get at the boards
3263 brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize);
3264 if (brdp->membase == NULL) {
3270 * Now that all specific code is set up, enable the shared memory and
3271 * look for the a signature area that will tell us exactly what board
3272 * this is, and how many ports.
3275 sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3276 memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t));
3279 if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) ||
3280 sig.magic1 != cpu_to_le16(ONB_MAGIC1) ||
3281 sig.magic2 != cpu_to_le16(ONB_MAGIC2) ||
3282 sig.magic3 != cpu_to_le16(ONB_MAGIC3)) {
3288 * Scan through the signature alive mask and calculate how many ports
3289 * there are on this board.
3295 for (i = 0; (i < 16); i++) {
3296 if (((sig.amask0 << i) & 0x8000) == 0)
3301 brdp->panels[0] = brdp->nrports;
3304 set_bit(BST_FOUND, &brdp->state);
3307 iounmap(brdp->membase);
3308 brdp->membase = NULL;
3310 release_region(brdp->iobase, brdp->iosize);
3315 /*****************************************************************************/
3318 * Start up a running board. This routine is only called after the
3319 * code has been down loaded to the board and is operational. It will
3320 * read in the memory map, and get the show on the road...
3323 static int stli_startbrd(struct stlibrd *brdp)
3325 cdkhdr_t __iomem *hdrp;
3326 cdkmem_t __iomem *memp;
3327 cdkasy_t __iomem *ap;
3328 unsigned long flags;
3329 unsigned int portnr, nrdevs, i;
3330 struct stliport *portp;
3334 spin_lock_irqsave(&brd_lock, flags);
3336 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
3337 nrdevs = hdrp->nrdevs;
3340 printk("%s(%d): CDK version %d.%d.%d --> "
3341 "nrdevs=%d memp=%x hostp=%x slavep=%x\n",
3342 __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification),
3343 readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp),
3344 readl(&hdrp->slavep));
3347 if (nrdevs < (brdp->nrports + 1)) {
3348 printk(KERN_ERR "istallion: slave failed to allocate memory for "
3349 "all devices, devices=%d\n", nrdevs);
3350 brdp->nrports = nrdevs - 1;
3352 brdp->nrdevs = nrdevs;
3353 brdp->hostoffset = hdrp->hostp - CDK_CDKADDR;
3354 brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR;
3355 brdp->bitsize = (nrdevs + 7) / 8;
3356 memoff = readl(&hdrp->memp);
3357 if (memoff > brdp->memsize) {
3358 printk(KERN_ERR "istallion: corrupted shared memory region?\n");
3360 goto stli_donestartup;
3362 memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff);
3363 if (readw(&memp->dtype) != TYP_ASYNCTRL) {
3364 printk(KERN_ERR "istallion: no slave control device found\n");
3365 goto stli_donestartup;
3370 * Cycle through memory allocation of each port. We are guaranteed to
3371 * have all ports inside the first page of slave window, so no need to
3372 * change pages while reading memory map.
3374 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) {
3375 if (readw(&memp->dtype) != TYP_ASYNC)
3377 portp = brdp->ports[portnr];
3381 portp->addr = readl(&memp->offset);
3382 portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs));
3383 portp->portidx = (unsigned char) (i / 8);
3384 portp->portbit = (unsigned char) (0x1 << (i % 8));
3387 writeb(0xff, &hdrp->slavereq);
3390 * For each port setup a local copy of the RX and TX buffer offsets
3391 * and sizes. We do this separate from the above, because we need to
3392 * move the shared memory page...
3394 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) {
3395 portp = brdp->ports[portnr];
3398 if (portp->addr == 0)
3400 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
3402 portp->rxsize = readw(&ap->rxq.size);
3403 portp->txsize = readw(&ap->txq.size);
3404 portp->rxoffset = readl(&ap->rxq.offset);
3405 portp->txoffset = readl(&ap->txq.offset);
3411 spin_unlock_irqrestore(&brd_lock, flags);
3414 set_bit(BST_STARTED, &brdp->state);
3416 if (! stli_timeron) {
3418 mod_timer(&stli_timerlist, STLI_TIMEOUT);
3424 /*****************************************************************************/
3427 * Probe and initialize the specified board.
3430 static int __devinit stli_brdinit(struct stlibrd *brdp)
3434 switch (brdp->brdtype) {
3439 retval = stli_initecp(brdp);
3446 retval = stli_initonb(brdp);
3449 printk(KERN_ERR "istallion: board=%d is unknown board "
3450 "type=%d\n", brdp->brdnr, brdp->brdtype);
3457 stli_initports(brdp);
3458 printk(KERN_INFO "istallion: %s found, board=%d io=%x mem=%x "
3459 "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype],
3460 brdp->brdnr, brdp->iobase, (int) brdp->memaddr,
3461 brdp->nrpanels, brdp->nrports);
3465 #if STLI_EISAPROBE != 0
3466 /*****************************************************************************/
3469 * Probe around trying to find where the EISA boards shared memory
3470 * might be. This is a bit if hack, but it is the best we can do.
3473 static int stli_eisamemprobe(struct stlibrd *brdp)
3475 cdkecpsig_t ecpsig, __iomem *ecpsigp;
3476 cdkonbsig_t onbsig, __iomem *onbsigp;
3480 * First up we reset the board, to get it into a known state. There
3481 * is only 2 board types here we need to worry about. Don;t use the
3482 * standard board init routine here, it programs up the shared
3483 * memory address, and we don't know it yet...
3485 if (brdp->brdtype == BRD_ECPE) {
3486 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
3487 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
3489 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3491 stli_ecpeienable(brdp);
3492 } else if (brdp->brdtype == BRD_ONBOARDE) {
3493 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
3494 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3496 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3498 outb(0x1, brdp->iobase);
3500 stli_onbeenable(brdp);
3506 brdp->memsize = ECP_MEMSIZE;
3509 * Board shared memory is enabled, so now we have a poke around and
3510 * see if we can find it.
3512 for (i = 0; (i < stli_eisamempsize); i++) {
3513 brdp->memaddr = stli_eisamemprobeaddrs[i];
3514 brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize);
3515 if (brdp->membase == NULL)
3518 if (brdp->brdtype == BRD_ECPE) {
3519 ecpsigp = stli_ecpeigetmemptr(brdp,
3520 CDK_SIGADDR, __LINE__);
3521 memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t));
3522 if (ecpsig.magic == cpu_to_le32(ECP_MAGIC))
3525 onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp,
3526 CDK_SIGADDR, __LINE__);
3527 memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t));
3528 if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) &&
3529 (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) &&
3530 (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) &&
3531 (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3)))
3535 iounmap(brdp->membase);
3541 * Regardless of whether we found the shared memory or not we must
3542 * disable the region. After that return success or failure.
3544 if (brdp->brdtype == BRD_ECPE)
3545 stli_ecpeidisable(brdp);
3547 stli_onbedisable(brdp);
3551 brdp->membase = NULL;
3552 printk(KERN_ERR "istallion: failed to probe shared memory "
3553 "region for %s in EISA slot=%d\n",
3554 stli_brdnames[brdp->brdtype], (brdp->iobase >> 12));
3561 static int stli_getbrdnr(void)
3565 for (i = 0; i < STL_MAXBRDS; i++) {
3566 if (!stli_brds[i]) {
3567 if (i >= stli_nrbrds)
3568 stli_nrbrds = i + 1;
3575 #if STLI_EISAPROBE != 0
3576 /*****************************************************************************/
3579 * Probe around and try to find any EISA boards in system. The biggest
3580 * problem here is finding out what memory address is associated with
3581 * an EISA board after it is found. The registers of the ECPE and
3582 * ONboardE are not readable - so we can't read them from there. We
3583 * don't have access to the EISA CMOS (or EISA BIOS) so we don't
3584 * actually have any way to find out the real value. The best we can
3585 * do is go probing around in the usual places hoping we can find it.
3588 static int __init stli_findeisabrds(void)
3590 struct stlibrd *brdp;
3591 unsigned int iobase, eid, i;
3592 int brdnr, found = 0;
3595 * Firstly check if this is an EISA system. If this is not an EISA system then
3596 * don't bother going any further!
3602 * Looks like an EISA system, so go searching for EISA boards.
3604 for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) {
3605 outb(0xff, (iobase + 0xc80));
3606 eid = inb(iobase + 0xc80);
3607 eid |= inb(iobase + 0xc81) << 8;
3608 if (eid != STL_EISAID)
3612 * We have found a board. Need to check if this board was
3613 * statically configured already (just in case!).
3615 for (i = 0; (i < STL_MAXBRDS); i++) {
3616 brdp = stli_brds[i];
3619 if (brdp->iobase == iobase)
3622 if (i < STL_MAXBRDS)
3626 * We have found a Stallion board and it is not configured already.
3627 * Allocate a board structure and initialize it.
3629 if ((brdp = stli_allocbrd()) == NULL)
3630 return found ? : -ENOMEM;
3631 brdnr = stli_getbrdnr();
3633 return found ? : -ENOMEM;
3634 brdp->brdnr = (unsigned int)brdnr;
3635 eid = inb(iobase + 0xc82);
3636 if (eid == ECP_EISAID)
3637 brdp->brdtype = BRD_ECPE;
3638 else if (eid == ONB_EISAID)
3639 brdp->brdtype = BRD_ONBOARDE;
3641 brdp->brdtype = BRD_UNKNOWN;
3642 brdp->iobase = iobase;
3643 outb(0x1, (iobase + 0xc84));
3644 if (stli_eisamemprobe(brdp))
3645 outb(0, (iobase + 0xc84));
3646 if (stli_brdinit(brdp) < 0) {
3651 stli_brds[brdp->brdnr] = brdp;
3654 for (i = 0; i < brdp->nrports; i++)
3655 tty_register_device(stli_serial,
3656 brdp->brdnr * STL_MAXPORTS + i, NULL);
3662 static inline int stli_findeisabrds(void) { return 0; }
3665 /*****************************************************************************/
3668 * Find the next available board number that is free.
3671 /*****************************************************************************/
3674 * We have a Stallion board. Allocate a board structure and
3675 * initialize it. Read its IO and MEMORY resources from PCI
3676 * configuration space.
3679 static int __devinit stli_pciprobe(struct pci_dev *pdev,
3680 const struct pci_device_id *ent)
3682 struct stlibrd *brdp;
3684 int brdnr, retval = -EIO;
3686 retval = pci_enable_device(pdev);
3689 brdp = stli_allocbrd();
3694 mutex_lock(&stli_brdslock);
3695 brdnr = stli_getbrdnr();
3697 printk(KERN_INFO "istallion: too many boards found, "
3698 "maximum supported %d\n", STL_MAXBRDS);
3699 mutex_unlock(&stli_brdslock);
3703 brdp->brdnr = (unsigned int)brdnr;
3704 stli_brds[brdp->brdnr] = brdp;
3705 mutex_unlock(&stli_brdslock);
3706 brdp->brdtype = BRD_ECPPCI;
3708 * We have all resources from the board, so lets setup the actual
3709 * board structure now.
3711 brdp->iobase = pci_resource_start(pdev, 3);
3712 brdp->memaddr = pci_resource_start(pdev, 2);
3713 retval = stli_brdinit(brdp);
3717 set_bit(BST_PROBED, &brdp->state);
3718 pci_set_drvdata(pdev, brdp);
3721 brdp->enable = NULL;
3722 brdp->disable = NULL;
3724 for (i = 0; i < brdp->nrports; i++)
3725 tty_register_device(stli_serial, brdp->brdnr * STL_MAXPORTS + i,
3730 stli_brds[brdp->brdnr] = NULL;
3737 static void __devexit stli_pciremove(struct pci_dev *pdev)
3739 struct stlibrd *brdp = pci_get_drvdata(pdev);
3741 stli_cleanup_ports(brdp);
3743 iounmap(brdp->membase);
3744 if (brdp->iosize > 0)
3745 release_region(brdp->iobase, brdp->iosize);
3747 stli_brds[brdp->brdnr] = NULL;
3751 static struct pci_driver stli_pcidriver = {
3752 .name = "istallion",
3753 .id_table = istallion_pci_tbl,
3754 .probe = stli_pciprobe,
3755 .remove = __devexit_p(stli_pciremove)
3757 /*****************************************************************************/
3760 * Allocate a new board structure. Fill out the basic info in it.
3763 static struct stlibrd *stli_allocbrd(void)
3765 struct stlibrd *brdp;
3767 brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL);
3769 printk(KERN_ERR "istallion: failed to allocate memory "
3770 "(size=%Zd)\n", sizeof(struct stlibrd));
3773 brdp->magic = STLI_BOARDMAGIC;
3777 /*****************************************************************************/
3780 * Scan through all the boards in the configuration and see what we
3784 static int __init stli_initbrds(void)
3786 struct stlibrd *brdp, *nxtbrdp;
3787 struct stlconf conf;
3788 unsigned int i, j, found = 0;
3791 for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp);
3793 memset(&conf, 0, sizeof(conf));
3794 if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0)
3796 if ((brdp = stli_allocbrd()) == NULL)
3798 brdp->brdnr = stli_nrbrds;
3799 brdp->brdtype = conf.brdtype;
3800 brdp->iobase = conf.ioaddr1;
3801 brdp->memaddr = conf.memaddr;
3802 if (stli_brdinit(brdp) < 0) {
3806 stli_brds[brdp->brdnr] = brdp;
3809 for (i = 0; i < brdp->nrports; i++)
3810 tty_register_device(stli_serial,
3811 brdp->brdnr * STL_MAXPORTS + i, NULL);
3814 retval = stli_findeisabrds();
3819 * All found boards are initialized. Now for a little optimization, if
3820 * no boards are sharing the "shared memory" regions then we can just
3821 * leave them all enabled. This is in fact the usual case.
3824 if (stli_nrbrds > 1) {
3825 for (i = 0; (i < stli_nrbrds); i++) {
3826 brdp = stli_brds[i];
3829 for (j = i + 1; (j < stli_nrbrds); j++) {
3830 nxtbrdp = stli_brds[j];
3831 if (nxtbrdp == NULL)
3833 if ((brdp->membase >= nxtbrdp->membase) &&
3834 (brdp->membase <= (nxtbrdp->membase +
3835 nxtbrdp->memsize - 1))) {
3843 if (stli_shared == 0) {
3844 for (i = 0; (i < stli_nrbrds); i++) {
3845 brdp = stli_brds[i];
3848 if (test_bit(BST_FOUND, &brdp->state)) {
3850 brdp->enable = NULL;
3851 brdp->disable = NULL;
3856 retval = pci_register_driver(&stli_pcidriver);
3857 if (retval && found == 0) {
3858 printk(KERN_ERR "Neither isa nor eisa cards found nor pci "
3859 "driver can be registered!\n");
3868 /*****************************************************************************/
3871 * Code to handle an "staliomem" read operation. This device is the
3872 * contents of the board shared memory. It is used for down loading
3873 * the slave image (and debugging :-)
3876 static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp)
3878 unsigned long flags;
3879 void __iomem *memptr;
3880 struct stlibrd *brdp;
3886 brdnr = iminor(fp->f_path.dentry->d_inode);
3887 if (brdnr >= stli_nrbrds)
3889 brdp = stli_brds[brdnr];
3892 if (brdp->state == 0)
3894 if (off >= brdp->memsize || off + count < off)
3897 size = min(count, (size_t)(brdp->memsize - off));
3900 * Copy the data a page at a time
3903 p = (void *)__get_free_page(GFP_KERNEL);
3908 spin_lock_irqsave(&brd_lock, flags);
3910 memptr = EBRDGETMEMPTR(brdp, off);
3911 n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
3912 n = min(n, (int)PAGE_SIZE);
3913 memcpy_fromio(p, memptr, n);
3915 spin_unlock_irqrestore(&brd_lock, flags);
3916 if (copy_to_user(buf, p, n)) {
3926 free_page((unsigned long)p);
3930 /*****************************************************************************/
3933 * Code to handle an "staliomem" write operation. This device is the
3934 * contents of the board shared memory. It is used for down loading
3935 * the slave image (and debugging :-)
3937 * FIXME: copy under lock
3940 static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp)
3942 unsigned long flags;
3943 void __iomem *memptr;
3944 struct stlibrd *brdp;
3951 brdnr = iminor(fp->f_path.dentry->d_inode);
3953 if (brdnr >= stli_nrbrds)
3955 brdp = stli_brds[brdnr];
3958 if (brdp->state == 0)
3960 if (off >= brdp->memsize || off + count < off)
3963 chbuf = (char __user *) buf;
3964 size = min(count, (size_t)(brdp->memsize - off));
3967 * Copy the data a page at a time
3970 p = (void *)__get_free_page(GFP_KERNEL);
3975 n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
3976 n = min(n, (int)PAGE_SIZE);
3977 if (copy_from_user(p, chbuf, n)) {
3982 spin_lock_irqsave(&brd_lock, flags);
3984 memptr = EBRDGETMEMPTR(brdp, off);
3985 memcpy_toio(memptr, p, n);
3987 spin_unlock_irqrestore(&brd_lock, flags);
3993 free_page((unsigned long) p);
3998 /*****************************************************************************/
4001 * Return the board stats structure to user app.
4004 static int stli_getbrdstats(combrd_t __user *bp)
4006 struct stlibrd *brdp;
4009 if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t)))
4011 if (stli_brdstats.brd >= STL_MAXBRDS)
4013 brdp = stli_brds[stli_brdstats.brd];
4017 memset(&stli_brdstats, 0, sizeof(combrd_t));
4019 stli_brdstats.brd = brdp->brdnr;
4020 stli_brdstats.type = brdp->brdtype;
4021 stli_brdstats.hwid = 0;
4022 stli_brdstats.state = brdp->state;
4023 stli_brdstats.ioaddr = brdp->iobase;
4024 stli_brdstats.memaddr = brdp->memaddr;
4025 stli_brdstats.nrpanels = brdp->nrpanels;
4026 stli_brdstats.nrports = brdp->nrports;
4027 for (i = 0; (i < brdp->nrpanels); i++) {
4028 stli_brdstats.panels[i].panel = i;
4029 stli_brdstats.panels[i].hwid = brdp->panelids[i];
4030 stli_brdstats.panels[i].nrports = brdp->panels[i];
4033 if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t)))
4038 /*****************************************************************************/
4041 * Resolve the referenced port number into a port struct pointer.
4044 static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr,
4045 unsigned int portnr)
4047 struct stlibrd *brdp;
4050 if (brdnr >= STL_MAXBRDS)
4052 brdp = stli_brds[brdnr];
4055 for (i = 0; (i < panelnr); i++)
4056 portnr += brdp->panels[i];
4057 if (portnr >= brdp->nrports)
4059 return brdp->ports[portnr];
4062 /*****************************************************************************/
4065 * Return the port stats structure to user app. A NULL port struct
4066 * pointer passed in means that we need to find out from the app
4067 * what port to get stats for (used through board control device).
4070 static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp)
4072 unsigned long flags;
4073 struct stlibrd *brdp;
4076 memset(&stli_comstats, 0, sizeof(comstats_t));
4080 brdp = stli_brds[portp->brdnr];
4084 mutex_lock(&portp->port.mutex);
4085 if (test_bit(BST_STARTED, &brdp->state)) {
4086 if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS,
4087 &stli_cdkstats, sizeof(asystats_t), 1)) < 0) {
4088 mutex_unlock(&portp->port.mutex);
4092 memset(&stli_cdkstats, 0, sizeof(asystats_t));
4095 stli_comstats.brd = portp->brdnr;
4096 stli_comstats.panel = portp->panelnr;
4097 stli_comstats.port = portp->portnr;
4098 stli_comstats.state = portp->state;
4099 stli_comstats.flags = portp->port.flags;
4101 spin_lock_irqsave(&brd_lock, flags);
4103 if (portp->port.tty == tty) {
4104 stli_comstats.ttystate = tty->flags;
4105 stli_comstats.rxbuffered = -1;
4106 if (tty->termios != NULL) {
4107 stli_comstats.cflags = tty->termios->c_cflag;
4108 stli_comstats.iflags = tty->termios->c_iflag;
4109 stli_comstats.oflags = tty->termios->c_oflag;
4110 stli_comstats.lflags = tty->termios->c_lflag;
4114 spin_unlock_irqrestore(&brd_lock, flags);
4116 stli_comstats.txtotal = stli_cdkstats.txchars;
4117 stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover;
4118 stli_comstats.txbuffered = stli_cdkstats.txringq;
4119 stli_comstats.rxbuffered += stli_cdkstats.rxringq;
4120 stli_comstats.rxoverrun = stli_cdkstats.overruns;
4121 stli_comstats.rxparity = stli_cdkstats.parity;
4122 stli_comstats.rxframing = stli_cdkstats.framing;
4123 stli_comstats.rxlost = stli_cdkstats.ringover;
4124 stli_comstats.rxbreaks = stli_cdkstats.rxbreaks;
4125 stli_comstats.txbreaks = stli_cdkstats.txbreaks;
4126 stli_comstats.txxon = stli_cdkstats.txstart;
4127 stli_comstats.txxoff = stli_cdkstats.txstop;
4128 stli_comstats.rxxon = stli_cdkstats.rxstart;
4129 stli_comstats.rxxoff = stli_cdkstats.rxstop;
4130 stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2;
4131 stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff;
4132 stli_comstats.modem = stli_cdkstats.dcdcnt;
4133 stli_comstats.hwid = stli_cdkstats.hwid;
4134 stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals);
4135 mutex_unlock(&portp->port.mutex);
4140 /*****************************************************************************/
4143 * Return the port stats structure to user app. A NULL port struct
4144 * pointer passed in means that we need to find out from the app
4145 * what port to get stats for (used through board control device).
4148 static int stli_getportstats(struct tty_struct *tty, struct stliport *portp,
4149 comstats_t __user *cp)
4151 struct stlibrd *brdp;
4155 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4157 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4158 stli_comstats.port);
4163 brdp = stli_brds[portp->brdnr];
4167 if ((rc = stli_portcmdstats(tty, portp)) < 0)
4170 return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ?
4174 /*****************************************************************************/
4177 * Clear the port stats structure. We also return it zeroed out...
4180 static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp)
4182 struct stlibrd *brdp;
4186 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4188 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4189 stli_comstats.port);
4194 brdp = stli_brds[portp->brdnr];
4198 mutex_lock(&portp->port.mutex);
4200 if (test_bit(BST_STARTED, &brdp->state)) {
4201 if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0) {
4202 mutex_unlock(&portp->port.mutex);
4207 memset(&stli_comstats, 0, sizeof(comstats_t));
4208 stli_comstats.brd = portp->brdnr;
4209 stli_comstats.panel = portp->panelnr;
4210 stli_comstats.port = portp->portnr;
4211 mutex_unlock(&portp->port.mutex);
4213 if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t)))
4218 /*****************************************************************************/
4221 * Return the entire driver ports structure to a user app.
4224 static int stli_getportstruct(struct stliport __user *arg)
4226 struct stliport stli_dummyport;
4227 struct stliport *portp;
4229 if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport)))
4231 portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr,
4232 stli_dummyport.portnr);
4235 if (copy_to_user(arg, portp, sizeof(struct stliport)))
4240 /*****************************************************************************/
4243 * Return the entire driver board structure to a user app.
4246 static int stli_getbrdstruct(struct stlibrd __user *arg)
4248 struct stlibrd stli_dummybrd;
4249 struct stlibrd *brdp;
4251 if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd)))
4253 if (stli_dummybrd.brdnr >= STL_MAXBRDS)
4255 brdp = stli_brds[stli_dummybrd.brdnr];
4258 if (copy_to_user(arg, brdp, sizeof(struct stlibrd)))
4263 /*****************************************************************************/
4266 * The "staliomem" device is also required to do some special operations on
4267 * the board. We need to be able to send an interrupt to the board,
4268 * reset it, and start/stop it.
4271 static long stli_memioctl(struct file *fp, unsigned int cmd, unsigned long arg)
4273 struct stlibrd *brdp;
4274 int brdnr, rc, done;
4275 void __user *argp = (void __user *)arg;
4278 * First up handle the board independent ioctls.
4284 case COM_GETPORTSTATS:
4285 rc = stli_getportstats(NULL, NULL, argp);
4288 case COM_CLRPORTSTATS:
4289 rc = stli_clrportstats(NULL, argp);
4292 case COM_GETBRDSTATS:
4293 rc = stli_getbrdstats(argp);
4297 rc = stli_getportstruct(argp);
4301 rc = stli_getbrdstruct(argp);
4309 * Now handle the board specific ioctls. These all depend on the
4310 * minor number of the device they were called from.
4312 brdnr = iminor(fp->f_dentry->d_inode);
4313 if (brdnr >= STL_MAXBRDS)
4315 brdp = stli_brds[brdnr];
4318 if (brdp->state == 0)
4326 rc = stli_startbrd(brdp);
4329 clear_bit(BST_STARTED, &brdp->state);
4332 clear_bit(BST_STARTED, &brdp->state);
4334 if (stli_shared == 0) {
4335 if (brdp->reenable != NULL)
4336 (* brdp->reenable)(brdp);
4346 static const struct tty_operations stli_ops = {
4348 .close = stli_close,
4349 .write = stli_write,
4350 .put_char = stli_putchar,
4351 .flush_chars = stli_flushchars,
4352 .write_room = stli_writeroom,
4353 .chars_in_buffer = stli_charsinbuffer,
4354 .ioctl = stli_ioctl,
4355 .set_termios = stli_settermios,
4356 .throttle = stli_throttle,
4357 .unthrottle = stli_unthrottle,
4359 .start = stli_start,
4360 .hangup = stli_hangup,
4361 .flush_buffer = stli_flushbuffer,
4362 .break_ctl = stli_breakctl,
4363 .wait_until_sent = stli_waituntilsent,
4364 .send_xchar = stli_sendxchar,
4365 .tiocmget = stli_tiocmget,
4366 .tiocmset = stli_tiocmset,
4367 .proc_fops = &stli_proc_fops,
4370 static const struct tty_port_operations stli_port_ops = {
4371 .carrier_raised = stli_carrier_raised,
4372 .dtr_rts = stli_dtr_rts,
4373 .activate = stli_activate,
4374 .shutdown = stli_shutdown,
4377 /*****************************************************************************/
4379 * Loadable module initialization stuff.
4382 static void istallion_cleanup_isa(void)
4384 struct stlibrd *brdp;
4387 for (j = 0; (j < stli_nrbrds); j++) {
4388 if ((brdp = stli_brds[j]) == NULL ||
4389 test_bit(BST_PROBED, &brdp->state))
4392 stli_cleanup_ports(brdp);
4394 iounmap(brdp->membase);
4395 if (brdp->iosize > 0)
4396 release_region(brdp->iobase, brdp->iosize);
4398 stli_brds[j] = NULL;
4402 static int __init istallion_module_init(void)
4407 printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion);
4409 spin_lock_init(&stli_lock);
4410 spin_lock_init(&brd_lock);
4412 stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL);
4413 if (!stli_txcookbuf) {
4414 printk(KERN_ERR "istallion: failed to allocate memory "
4415 "(size=%d)\n", STLI_TXBUFSIZE);
4420 stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS);
4426 stli_serial->owner = THIS_MODULE;
4427 stli_serial->driver_name = stli_drvname;
4428 stli_serial->name = stli_serialname;
4429 stli_serial->major = STL_SERIALMAJOR;
4430 stli_serial->minor_start = 0;
4431 stli_serial->type = TTY_DRIVER_TYPE_SERIAL;
4432 stli_serial->subtype = SERIAL_TYPE_NORMAL;
4433 stli_serial->init_termios = stli_deftermios;
4434 stli_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
4435 tty_set_operations(stli_serial, &stli_ops);
4437 retval = tty_register_driver(stli_serial);
4439 printk(KERN_ERR "istallion: failed to register serial driver\n");
4443 retval = stli_initbrds();
4448 * Set up a character driver for the shared memory region. We need this
4449 * to down load the slave code image. Also it is a useful debugging tool.
4451 retval = register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem);
4453 printk(KERN_ERR "istallion: failed to register serial memory "
4458 istallion_class = class_create(THIS_MODULE, "staliomem");
4459 for (i = 0; i < 4; i++)
4460 device_create(istallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i),
4461 NULL, "staliomem%d", i);
4465 pci_unregister_driver(&stli_pcidriver);
4466 istallion_cleanup_isa();
4468 tty_unregister_driver(stli_serial);
4470 put_tty_driver(stli_serial);
4472 kfree(stli_txcookbuf);
4477 /*****************************************************************************/
4479 static void __exit istallion_module_exit(void)
4483 printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle,
4488 del_timer_sync(&stli_timerlist);
4491 unregister_chrdev(STL_SIOMEMMAJOR, "staliomem");
4493 for (j = 0; j < 4; j++)
4494 device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, j));
4495 class_destroy(istallion_class);
4497 pci_unregister_driver(&stli_pcidriver);
4498 istallion_cleanup_isa();
4500 tty_unregister_driver(stli_serial);
4501 put_tty_driver(stli_serial);
4503 kfree(stli_txcookbuf);
4506 module_init(istallion_module_init);
4507 module_exit(istallion_module_exit);