1 /*****************************************************************************/
4 * istallion.c -- stallion intelligent multiport serial driver.
6 * Copyright (C) 1996-1999 Stallion Technologies
7 * Copyright (C) 1994-1996 Greg Ungerer.
9 * This code is loosely based on the Linux serial driver, written by
10 * Linus Torvalds, Theodore T'so and others.
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
19 /*****************************************************************************/
21 #include <linux/module.h>
22 #include <linux/slab.h>
23 #include <linux/interrupt.h>
24 #include <linux/tty.h>
25 #include <linux/tty_flip.h>
26 #include <linux/serial.h>
27 #include <linux/cdk.h>
28 #include <linux/comstats.h>
29 #include <linux/istallion.h>
30 #include <linux/ioport.h>
31 #include <linux/delay.h>
32 #include <linux/init.h>
33 #include <linux/device.h>
34 #include <linux/wait.h>
35 #include <linux/eisa.h>
36 #include <linux/ctype.h>
39 #include <asm/uaccess.h>
41 #include <linux/pci.h>
43 /*****************************************************************************/
46 * Define different board types. Not all of the following board types
47 * are supported by this driver. But I will use the standard "assigned"
48 * board numbers. Currently supported boards are abbreviated as:
49 * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and
53 #define BRD_STALLION 1
55 #define BRD_ONBOARD2 3
57 #define BRD_ONBOARDE 7
63 #define BRD_BRUMBY BRD_BRUMBY4
66 * Define a configuration structure to hold the board configuration.
67 * Need to set this up in the code (for now) with the boards that are
68 * to be configured into the system. This is what needs to be modified
69 * when adding/removing/modifying boards. Each line entry in the
70 * stli_brdconf[] array is a board. Each line contains io/irq/memory
71 * ranges for that board (as well as what type of board it is).
73 * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },
74 * This line will configure an EasyConnection 8/64 at io address 2a0,
75 * and shared memory address of cc000. Multiple EasyConnection 8/64
76 * boards can share the same shared memory address space. No interrupt
77 * is required for this board type.
79 * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 },
80 * This line will configure an EasyConnection 8/64 EISA in slot 5 and
81 * shared memory address of 0x80000000 (2 GByte). Multiple
82 * EasyConnection 8/64 EISA boards can share the same shared memory
83 * address space. No interrupt is required for this board type.
85 * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 },
86 * This line will configure an ONboard (ISA type) at io address 240,
87 * and shared memory address of d0000. Multiple ONboards can share
88 * the same shared memory address space. No interrupt required.
90 * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 },
91 * This line will configure a Brumby board (any number of ports!) at
92 * io address 360 and shared memory address of c8000. All Brumby boards
93 * configured into a system must have their own separate io and memory
94 * addresses. No interrupt is required.
96 * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 },
97 * This line will configure an original Stallion board at io address 330
98 * and shared memory address d0000 (this would only be valid for a "V4.0"
99 * or Rev.O Stallion board). All Stallion boards configured into the
100 * system must have their own separate io and memory addresses. No
101 * interrupt is required.
108 unsigned long memaddr
;
113 static unsigned int stli_nrbrds
;
115 /* stli_lock must NOT be taken holding brd_lock */
116 static spinlock_t stli_lock
; /* TTY logic lock */
117 static spinlock_t brd_lock
; /* Board logic lock */
120 * There is some experimental EISA board detection code in this driver.
121 * By default it is disabled, but for those that want to try it out,
122 * then set the define below to be 1.
124 #define STLI_EISAPROBE 0
126 /*****************************************************************************/
129 * Define some important driver characteristics. Device major numbers
130 * allocated as per Linux Device Registry.
132 #ifndef STL_SIOMEMMAJOR
133 #define STL_SIOMEMMAJOR 28
135 #ifndef STL_SERIALMAJOR
136 #define STL_SERIALMAJOR 24
138 #ifndef STL_CALLOUTMAJOR
139 #define STL_CALLOUTMAJOR 25
142 /*****************************************************************************/
145 * Define our local driver identity first. Set up stuff to deal with
146 * all the local structures required by a serial tty driver.
148 static char *stli_drvtitle
= "Stallion Intelligent Multiport Serial Driver";
149 static char *stli_drvname
= "istallion";
150 static char *stli_drvversion
= "5.6.0";
151 static char *stli_serialname
= "ttyE";
153 static struct tty_driver
*stli_serial
;
156 #define STLI_TXBUFSIZE 4096
159 * Use a fast local buffer for cooked characters. Typically a whole
160 * bunch of cooked characters come in for a port, 1 at a time. So we
161 * save those up into a local buffer, then write out the whole lot
162 * with a large memcpy. Just use 1 buffer for all ports, since its
163 * use it is only need for short periods of time by each port.
165 static char *stli_txcookbuf
;
166 static int stli_txcooksize
;
167 static int stli_txcookrealsize
;
168 static struct tty_struct
*stli_txcooktty
;
171 * Define a local default termios struct. All ports will be created
172 * with this termios initially. Basically all it defines is a raw port
173 * at 9600 baud, 8 data bits, no parity, 1 stop bit.
175 static struct ktermios stli_deftermios
= {
176 .c_cflag
= (B9600
| CS8
| CREAD
| HUPCL
| CLOCAL
),
183 * Define global stats structures. Not used often, and can be
184 * re-used for each stats call.
186 static comstats_t stli_comstats
;
187 static combrd_t stli_brdstats
;
188 static struct asystats stli_cdkstats
;
190 /*****************************************************************************/
192 static DEFINE_MUTEX(stli_brdslock
);
193 static struct stlibrd
*stli_brds
[STL_MAXBRDS
];
195 static int stli_shared
;
198 * Per board state flags. Used with the state field of the board struct.
199 * Not really much here... All we need to do is keep track of whether
200 * the board has been detected, and whether it is actually running a slave
203 #define BST_FOUND 0x1
204 #define BST_STARTED 0x2
207 * Define the set of port state flags. These are marked for internal
208 * state purposes only, usually to do with the state of communications
209 * with the slave. Most of them need to be updated atomically, so always
210 * use the bit setting operations (unless protected by cli/sti).
212 #define ST_INITIALIZING 1
218 #define ST_DOFLUSHRX 7
219 #define ST_DOFLUSHTX 8
222 #define ST_GETSIGS 11
225 * Define an array of board names as printable strings. Handy for
226 * referencing boards when printing trace and stuff.
228 static char *stli_brdnames
[] = {
261 /*****************************************************************************/
264 * Define some string labels for arguments passed from the module
265 * load line. These allow for easy board definitions, and easy
266 * modification of the io, memory and irq resoucres.
269 static char *board0
[8];
270 static char *board1
[8];
271 static char *board2
[8];
272 static char *board3
[8];
274 static char **stli_brdsp
[] = {
282 * Define a set of common board names, and types. This is used to
283 * parse any module arguments.
286 static struct stlibrdtype
{
290 { "stallion", BRD_STALLION
},
291 { "1", BRD_STALLION
},
292 { "brumby", BRD_BRUMBY
},
293 { "brumby4", BRD_BRUMBY
},
294 { "brumby/4", BRD_BRUMBY
},
295 { "brumby-4", BRD_BRUMBY
},
296 { "brumby8", BRD_BRUMBY
},
297 { "brumby/8", BRD_BRUMBY
},
298 { "brumby-8", BRD_BRUMBY
},
299 { "brumby16", BRD_BRUMBY
},
300 { "brumby/16", BRD_BRUMBY
},
301 { "brumby-16", BRD_BRUMBY
},
303 { "onboard2", BRD_ONBOARD2
},
304 { "onboard-2", BRD_ONBOARD2
},
305 { "onboard/2", BRD_ONBOARD2
},
306 { "onboard-mc", BRD_ONBOARD2
},
307 { "onboard/mc", BRD_ONBOARD2
},
308 { "onboard-mca", BRD_ONBOARD2
},
309 { "onboard/mca", BRD_ONBOARD2
},
310 { "3", BRD_ONBOARD2
},
311 { "onboard", BRD_ONBOARD
},
312 { "onboardat", BRD_ONBOARD
},
313 { "4", BRD_ONBOARD
},
314 { "onboarde", BRD_ONBOARDE
},
315 { "onboard-e", BRD_ONBOARDE
},
316 { "onboard/e", BRD_ONBOARDE
},
317 { "onboard-ei", BRD_ONBOARDE
},
318 { "onboard/ei", BRD_ONBOARDE
},
319 { "7", BRD_ONBOARDE
},
321 { "ecpat", BRD_ECP
},
322 { "ec8/64", BRD_ECP
},
323 { "ec8/64-at", BRD_ECP
},
324 { "ec8/64-isa", BRD_ECP
},
326 { "ecpe", BRD_ECPE
},
327 { "ecpei", BRD_ECPE
},
328 { "ec8/64-e", BRD_ECPE
},
329 { "ec8/64-ei", BRD_ECPE
},
331 { "ecpmc", BRD_ECPMC
},
332 { "ec8/64-mc", BRD_ECPMC
},
333 { "ec8/64-mca", BRD_ECPMC
},
335 { "ecppci", BRD_ECPPCI
},
336 { "ec/ra", BRD_ECPPCI
},
337 { "ec/ra-pc", BRD_ECPPCI
},
338 { "ec/ra-pci", BRD_ECPPCI
},
339 { "29", BRD_ECPPCI
},
343 * Define the module agruments.
345 MODULE_AUTHOR("Greg Ungerer");
346 MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver");
347 MODULE_LICENSE("GPL");
350 module_param_array(board0
, charp
, NULL
, 0);
351 MODULE_PARM_DESC(board0
, "Board 0 config -> name[,ioaddr[,memaddr]");
352 module_param_array(board1
, charp
, NULL
, 0);
353 MODULE_PARM_DESC(board1
, "Board 1 config -> name[,ioaddr[,memaddr]");
354 module_param_array(board2
, charp
, NULL
, 0);
355 MODULE_PARM_DESC(board2
, "Board 2 config -> name[,ioaddr[,memaddr]");
356 module_param_array(board3
, charp
, NULL
, 0);
357 MODULE_PARM_DESC(board3
, "Board 3 config -> name[,ioaddr[,memaddr]");
359 #if STLI_EISAPROBE != 0
361 * Set up a default memory address table for EISA board probing.
362 * The default addresses are all bellow 1Mbyte, which has to be the
363 * case anyway. They should be safe, since we only read values from
364 * them, and interrupts are disabled while we do it. If the higher
365 * memory support is compiled in then we also try probing around
366 * the 1Gb, 2Gb and 3Gb areas as well...
368 static unsigned long stli_eisamemprobeaddrs
[] = {
369 0xc0000, 0xd0000, 0xe0000, 0xf0000,
370 0x80000000, 0x80010000, 0x80020000, 0x80030000,
371 0x40000000, 0x40010000, 0x40020000, 0x40030000,
372 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000,
373 0xff000000, 0xff010000, 0xff020000, 0xff030000,
376 static int stli_eisamempsize
= ARRAY_SIZE(stli_eisamemprobeaddrs
);
380 * Define the Stallion PCI vendor and device IDs.
382 #ifndef PCI_DEVICE_ID_ECRA
383 #define PCI_DEVICE_ID_ECRA 0x0004
386 static struct pci_device_id istallion_pci_tbl
[] = {
387 { PCI_DEVICE(PCI_VENDOR_ID_STALLION
, PCI_DEVICE_ID_ECRA
), },
390 MODULE_DEVICE_TABLE(pci
, istallion_pci_tbl
);
392 static struct pci_driver stli_pcidriver
;
394 /*****************************************************************************/
397 * Hardware configuration info for ECP boards. These defines apply
398 * to the directly accessible io ports of the ECP. There is a set of
399 * defines for each ECP board type, ISA, EISA, MCA and PCI.
403 #define ECP_MEMSIZE (128 * 1024)
404 #define ECP_PCIMEMSIZE (256 * 1024)
406 #define ECP_ATPAGESIZE (4 * 1024)
407 #define ECP_MCPAGESIZE (4 * 1024)
408 #define ECP_EIPAGESIZE (64 * 1024)
409 #define ECP_PCIPAGESIZE (64 * 1024)
411 #define STL_EISAID 0x8c4e
414 * Important defines for the ISA class of ECP board.
417 #define ECP_ATCONFR 1
418 #define ECP_ATMEMAR 2
419 #define ECP_ATMEMPR 3
420 #define ECP_ATSTOP 0x1
421 #define ECP_ATINTENAB 0x10
422 #define ECP_ATENABLE 0x20
423 #define ECP_ATDISABLE 0x00
424 #define ECP_ATADDRMASK 0x3f000
425 #define ECP_ATADDRSHFT 12
428 * Important defines for the EISA class of ECP board.
431 #define ECP_EIMEMARL 1
432 #define ECP_EICONFR 2
433 #define ECP_EIMEMARH 3
434 #define ECP_EIENABLE 0x1
435 #define ECP_EIDISABLE 0x0
436 #define ECP_EISTOP 0x4
437 #define ECP_EIEDGE 0x00
438 #define ECP_EILEVEL 0x80
439 #define ECP_EIADDRMASKL 0x00ff0000
440 #define ECP_EIADDRSHFTL 16
441 #define ECP_EIADDRMASKH 0xff000000
442 #define ECP_EIADDRSHFTH 24
443 #define ECP_EIBRDENAB 0xc84
445 #define ECP_EISAID 0x4
448 * Important defines for the Micro-channel class of ECP board.
449 * (It has a lot in common with the ISA boards.)
452 #define ECP_MCCONFR 1
453 #define ECP_MCSTOP 0x20
454 #define ECP_MCENABLE 0x80
455 #define ECP_MCDISABLE 0x00
458 * Important defines for the PCI class of ECP board.
459 * (It has a lot in common with the other ECP boards.)
461 #define ECP_PCIIREG 0
462 #define ECP_PCICONFR 1
463 #define ECP_PCISTOP 0x01
466 * Hardware configuration info for ONboard and Brumby boards. These
467 * defines apply to the directly accessible io ports of these boards.
469 #define ONB_IOSIZE 16
470 #define ONB_MEMSIZE (64 * 1024)
471 #define ONB_ATPAGESIZE (64 * 1024)
472 #define ONB_MCPAGESIZE (64 * 1024)
473 #define ONB_EIMEMSIZE (128 * 1024)
474 #define ONB_EIPAGESIZE (64 * 1024)
477 * Important defines for the ISA class of ONboard board.
480 #define ONB_ATMEMAR 1
481 #define ONB_ATCONFR 2
482 #define ONB_ATSTOP 0x4
483 #define ONB_ATENABLE 0x01
484 #define ONB_ATDISABLE 0x00
485 #define ONB_ATADDRMASK 0xff0000
486 #define ONB_ATADDRSHFT 16
488 #define ONB_MEMENABLO 0
489 #define ONB_MEMENABHI 0x02
492 * Important defines for the EISA class of ONboard board.
495 #define ONB_EIMEMARL 1
496 #define ONB_EICONFR 2
497 #define ONB_EIMEMARH 3
498 #define ONB_EIENABLE 0x1
499 #define ONB_EIDISABLE 0x0
500 #define ONB_EISTOP 0x4
501 #define ONB_EIEDGE 0x00
502 #define ONB_EILEVEL 0x80
503 #define ONB_EIADDRMASKL 0x00ff0000
504 #define ONB_EIADDRSHFTL 16
505 #define ONB_EIADDRMASKH 0xff000000
506 #define ONB_EIADDRSHFTH 24
507 #define ONB_EIBRDENAB 0xc84
509 #define ONB_EISAID 0x1
512 * Important defines for the Brumby boards. They are pretty simple,
513 * there is not much that is programmably configurable.
515 #define BBY_IOSIZE 16
516 #define BBY_MEMSIZE (64 * 1024)
517 #define BBY_PAGESIZE (16 * 1024)
520 #define BBY_ATCONFR 1
521 #define BBY_ATSTOP 0x4
524 * Important defines for the Stallion boards. They are pretty simple,
525 * there is not much that is programmably configurable.
527 #define STAL_IOSIZE 16
528 #define STAL_MEMSIZE (64 * 1024)
529 #define STAL_PAGESIZE (64 * 1024)
532 * Define the set of status register values for EasyConnection panels.
533 * The signature will return with the status value for each panel. From
534 * this we can determine what is attached to the board - before we have
535 * actually down loaded any code to it.
537 #define ECH_PNLSTATUS 2
538 #define ECH_PNL16PORT 0x20
539 #define ECH_PNLIDMASK 0x07
540 #define ECH_PNLXPID 0x40
541 #define ECH_PNLINTRPEND 0x80
544 * Define some macros to do things to the board. Even those these boards
545 * are somewhat related there is often significantly different ways of
546 * doing some operation on it (like enable, paging, reset, etc). So each
547 * board class has a set of functions which do the commonly required
548 * operations. The macros below basically just call these functions,
549 * generally checking for a NULL function - which means that the board
550 * needs nothing done to it to achieve this operation!
552 #define EBRDINIT(brdp) \
553 if (brdp->init != NULL) \
556 #define EBRDENABLE(brdp) \
557 if (brdp->enable != NULL) \
558 (* brdp->enable)(brdp);
560 #define EBRDDISABLE(brdp) \
561 if (brdp->disable != NULL) \
562 (* brdp->disable)(brdp);
564 #define EBRDINTR(brdp) \
565 if (brdp->intr != NULL) \
566 (* brdp->intr)(brdp);
568 #define EBRDRESET(brdp) \
569 if (brdp->reset != NULL) \
570 (* brdp->reset)(brdp);
572 #define EBRDGETMEMPTR(brdp,offset) \
573 (* brdp->getmemptr)(brdp, offset, __LINE__)
576 * Define the maximal baud rate, and the default baud base for ports.
578 #define STL_MAXBAUD 460800
579 #define STL_BAUDBASE 115200
580 #define STL_CLOSEDELAY (5 * HZ / 10)
582 /*****************************************************************************/
585 * Define macros to extract a brd or port number from a minor number.
587 #define MINOR2BRD(min) (((min) & 0xc0) >> 6)
588 #define MINOR2PORT(min) ((min) & 0x3f)
590 /*****************************************************************************/
593 * Prototype all functions in this driver!
596 static int stli_parsebrd(struct stlconf
*confp
, char **argp
);
597 static int stli_init(void);
598 static int stli_open(struct tty_struct
*tty
, struct file
*filp
);
599 static void stli_close(struct tty_struct
*tty
, struct file
*filp
);
600 static int stli_write(struct tty_struct
*tty
, const unsigned char *buf
, int count
);
601 static void stli_putchar(struct tty_struct
*tty
, unsigned char ch
);
602 static void stli_flushchars(struct tty_struct
*tty
);
603 static int stli_writeroom(struct tty_struct
*tty
);
604 static int stli_charsinbuffer(struct tty_struct
*tty
);
605 static int stli_ioctl(struct tty_struct
*tty
, struct file
*file
, unsigned int cmd
, unsigned long arg
);
606 static void stli_settermios(struct tty_struct
*tty
, struct ktermios
*old
);
607 static void stli_throttle(struct tty_struct
*tty
);
608 static void stli_unthrottle(struct tty_struct
*tty
);
609 static void stli_stop(struct tty_struct
*tty
);
610 static void stli_start(struct tty_struct
*tty
);
611 static void stli_flushbuffer(struct tty_struct
*tty
);
612 static void stli_breakctl(struct tty_struct
*tty
, int state
);
613 static void stli_waituntilsent(struct tty_struct
*tty
, int timeout
);
614 static void stli_sendxchar(struct tty_struct
*tty
, char ch
);
615 static void stli_hangup(struct tty_struct
*tty
);
616 static int stli_portinfo(struct stlibrd
*brdp
, struct stliport
*portp
, int portnr
, char *pos
);
618 static int stli_brdinit(struct stlibrd
*brdp
);
619 static int stli_startbrd(struct stlibrd
*brdp
);
620 static ssize_t
stli_memread(struct file
*fp
, char __user
*buf
, size_t count
, loff_t
*offp
);
621 static ssize_t
stli_memwrite(struct file
*fp
, const char __user
*buf
, size_t count
, loff_t
*offp
);
622 static int stli_memioctl(struct inode
*ip
, struct file
*fp
, unsigned int cmd
, unsigned long arg
);
623 static void stli_brdpoll(struct stlibrd
*brdp
, cdkhdr_t __iomem
*hdrp
);
624 static void stli_poll(unsigned long arg
);
625 static int stli_hostcmd(struct stlibrd
*brdp
, struct stliport
*portp
);
626 static int stli_initopen(struct stlibrd
*brdp
, struct stliport
*portp
);
627 static int stli_rawopen(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long arg
, int wait
);
628 static int stli_rawclose(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long arg
, int wait
);
629 static int stli_waitcarrier(struct stlibrd
*brdp
, struct stliport
*portp
, struct file
*filp
);
630 static void stli_dohangup(struct work_struct
*);
631 static int stli_setport(struct stliport
*portp
);
632 static int stli_cmdwait(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
);
633 static void stli_sendcmd(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
);
634 static void __stli_sendcmd(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
);
635 static void stli_dodelaycmd(struct stliport
*portp
, cdkctrl_t __iomem
*cp
);
636 static void stli_mkasyport(struct stliport
*portp
, asyport_t
*pp
, struct ktermios
*tiosp
);
637 static void stli_mkasysigs(asysigs_t
*sp
, int dtr
, int rts
);
638 static long stli_mktiocm(unsigned long sigvalue
);
639 static void stli_read(struct stlibrd
*brdp
, struct stliport
*portp
);
640 static int stli_getserial(struct stliport
*portp
, struct serial_struct __user
*sp
);
641 static int stli_setserial(struct stliport
*portp
, struct serial_struct __user
*sp
);
642 static int stli_getbrdstats(combrd_t __user
*bp
);
643 static int stli_getportstats(struct stliport
*portp
, comstats_t __user
*cp
);
644 static int stli_portcmdstats(struct stliport
*portp
);
645 static int stli_clrportstats(struct stliport
*portp
, comstats_t __user
*cp
);
646 static int stli_getportstruct(struct stliport __user
*arg
);
647 static int stli_getbrdstruct(struct stlibrd __user
*arg
);
648 static struct stlibrd
*stli_allocbrd(void);
650 static void stli_ecpinit(struct stlibrd
*brdp
);
651 static void stli_ecpenable(struct stlibrd
*brdp
);
652 static void stli_ecpdisable(struct stlibrd
*brdp
);
653 static void __iomem
*stli_ecpgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
);
654 static void stli_ecpreset(struct stlibrd
*brdp
);
655 static void stli_ecpintr(struct stlibrd
*brdp
);
656 static void stli_ecpeiinit(struct stlibrd
*brdp
);
657 static void stli_ecpeienable(struct stlibrd
*brdp
);
658 static void stli_ecpeidisable(struct stlibrd
*brdp
);
659 static void __iomem
*stli_ecpeigetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
);
660 static void stli_ecpeireset(struct stlibrd
*brdp
);
661 static void stli_ecpmcenable(struct stlibrd
*brdp
);
662 static void stli_ecpmcdisable(struct stlibrd
*brdp
);
663 static void __iomem
*stli_ecpmcgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
);
664 static void stli_ecpmcreset(struct stlibrd
*brdp
);
665 static void stli_ecppciinit(struct stlibrd
*brdp
);
666 static void __iomem
*stli_ecppcigetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
);
667 static void stli_ecppcireset(struct stlibrd
*brdp
);
669 static void stli_onbinit(struct stlibrd
*brdp
);
670 static void stli_onbenable(struct stlibrd
*brdp
);
671 static void stli_onbdisable(struct stlibrd
*brdp
);
672 static void __iomem
*stli_onbgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
);
673 static void stli_onbreset(struct stlibrd
*brdp
);
674 static void stli_onbeinit(struct stlibrd
*brdp
);
675 static void stli_onbeenable(struct stlibrd
*brdp
);
676 static void stli_onbedisable(struct stlibrd
*brdp
);
677 static void __iomem
*stli_onbegetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
);
678 static void stli_onbereset(struct stlibrd
*brdp
);
679 static void stli_bbyinit(struct stlibrd
*brdp
);
680 static void __iomem
*stli_bbygetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
);
681 static void stli_bbyreset(struct stlibrd
*brdp
);
682 static void stli_stalinit(struct stlibrd
*brdp
);
683 static void __iomem
*stli_stalgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
);
684 static void stli_stalreset(struct stlibrd
*brdp
);
686 static struct stliport
*stli_getport(unsigned int brdnr
, unsigned int panelnr
, unsigned int portnr
);
688 static int stli_initecp(struct stlibrd
*brdp
);
689 static int stli_initonb(struct stlibrd
*brdp
);
690 #if STLI_EISAPROBE != 0
691 static int stli_eisamemprobe(struct stlibrd
*brdp
);
693 static int stli_initports(struct stlibrd
*brdp
);
695 /*****************************************************************************/
698 * Define the driver info for a user level shared memory device. This
699 * device will work sort of like the /dev/kmem device - except that it
700 * will give access to the shared memory on the Stallion intelligent
701 * board. This is also a very useful debugging tool.
703 static const struct file_operations stli_fsiomem
= {
704 .owner
= THIS_MODULE
,
705 .read
= stli_memread
,
706 .write
= stli_memwrite
,
707 .ioctl
= stli_memioctl
,
710 /*****************************************************************************/
713 * Define a timer_list entry for our poll routine. The slave board
714 * is polled every so often to see if anything needs doing. This is
715 * much cheaper on host cpu than using interrupts. It turns out to
716 * not increase character latency by much either...
718 static DEFINE_TIMER(stli_timerlist
, stli_poll
, 0, 0);
720 static int stli_timeron
;
723 * Define the calculation for the timeout routine.
725 #define STLI_TIMEOUT (jiffies + 1)
727 /*****************************************************************************/
729 static struct class *istallion_class
;
731 static void stli_cleanup_ports(struct stlibrd
*brdp
)
733 struct stliport
*portp
;
736 for (j
= 0; j
< STL_MAXPORTS
; j
++) {
737 portp
= brdp
->ports
[j
];
739 if (portp
->tty
!= NULL
)
740 tty_hangup(portp
->tty
);
747 * Loadable module initialization stuff.
750 static int __init
istallion_module_init(void)
756 /*****************************************************************************/
758 static void __exit
istallion_module_exit(void)
760 struct stlibrd
*brdp
;
764 printk(KERN_INFO
"Unloading %s: version %s\n", stli_drvtitle
,
767 pci_unregister_driver(&stli_pcidriver
);
769 * Free up all allocated resources used by the ports. This includes
770 * memory and interrupts.
774 del_timer_sync(&stli_timerlist
);
777 i
= tty_unregister_driver(stli_serial
);
779 printk("STALLION: failed to un-register tty driver, "
783 put_tty_driver(stli_serial
);
784 for (j
= 0; j
< 4; j
++)
785 class_device_destroy(istallion_class
, MKDEV(STL_SIOMEMMAJOR
, j
));
786 class_destroy(istallion_class
);
787 if ((i
= unregister_chrdev(STL_SIOMEMMAJOR
, "staliomem")))
788 printk("STALLION: failed to un-register serial memory device, "
791 kfree(stli_txcookbuf
);
793 for (j
= 0; (j
< stli_nrbrds
); j
++) {
794 if ((brdp
= stli_brds
[j
]) == NULL
)
797 stli_cleanup_ports(brdp
);
799 iounmap(brdp
->membase
);
800 if (brdp
->iosize
> 0)
801 release_region(brdp
->iobase
, brdp
->iosize
);
807 module_init(istallion_module_init
);
808 module_exit(istallion_module_exit
);
810 /*****************************************************************************/
813 * Parse the supplied argument string, into the board conf struct.
816 static int stli_parsebrd(struct stlconf
*confp
, char **argp
)
821 if (argp
[0] == NULL
|| *argp
[0] == 0)
824 for (sp
= argp
[0], i
= 0; ((*sp
!= 0) && (i
< 25)); sp
++, i
++)
827 for (i
= 0; i
< ARRAY_SIZE(stli_brdstr
); i
++) {
828 if (strcmp(stli_brdstr
[i
].name
, argp
[0]) == 0)
831 if (i
== ARRAY_SIZE(stli_brdstr
)) {
832 printk("STALLION: unknown board name, %s?\n", argp
[0]);
836 confp
->brdtype
= stli_brdstr
[i
].type
;
837 if (argp
[1] != NULL
&& *argp
[1] != 0)
838 confp
->ioaddr1
= simple_strtoul(argp
[1], NULL
, 0);
839 if (argp
[2] != NULL
&& *argp
[2] != 0)
840 confp
->memaddr
= simple_strtoul(argp
[2], NULL
, 0);
844 /*****************************************************************************/
846 static int stli_open(struct tty_struct
*tty
, struct file
*filp
)
848 struct stlibrd
*brdp
;
849 struct stliport
*portp
;
850 unsigned int minordev
, brdnr
, portnr
;
853 minordev
= tty
->index
;
854 brdnr
= MINOR2BRD(minordev
);
855 if (brdnr
>= stli_nrbrds
)
857 brdp
= stli_brds
[brdnr
];
860 if ((brdp
->state
& BST_STARTED
) == 0)
862 portnr
= MINOR2PORT(minordev
);
863 if (portnr
> brdp
->nrports
)
866 portp
= brdp
->ports
[portnr
];
869 if (portp
->devnr
< 1)
874 * Check if this port is in the middle of closing. If so then wait
875 * until it is closed then return error status based on flag settings.
876 * The sleep here does not need interrupt protection since the wakeup
877 * for it is done with the same context.
879 if (portp
->flags
& ASYNC_CLOSING
) {
880 interruptible_sleep_on(&portp
->close_wait
);
881 if (portp
->flags
& ASYNC_HUP_NOTIFY
)
887 * On the first open of the device setup the port hardware, and
888 * initialize the per port data structure. Since initializing the port
889 * requires several commands to the board we will need to wait for any
890 * other open that is already initializing the port.
893 tty
->driver_data
= portp
;
896 wait_event_interruptible(portp
->raw_wait
,
897 !test_bit(ST_INITIALIZING
, &portp
->state
));
898 if (signal_pending(current
))
901 if ((portp
->flags
& ASYNC_INITIALIZED
) == 0) {
902 set_bit(ST_INITIALIZING
, &portp
->state
);
903 if ((rc
= stli_initopen(brdp
, portp
)) >= 0) {
904 portp
->flags
|= ASYNC_INITIALIZED
;
905 clear_bit(TTY_IO_ERROR
, &tty
->flags
);
907 clear_bit(ST_INITIALIZING
, &portp
->state
);
908 wake_up_interruptible(&portp
->raw_wait
);
914 * Check if this port is in the middle of closing. If so then wait
915 * until it is closed then return error status, based on flag settings.
916 * The sleep here does not need interrupt protection since the wakeup
917 * for it is done with the same context.
919 if (portp
->flags
& ASYNC_CLOSING
) {
920 interruptible_sleep_on(&portp
->close_wait
);
921 if (portp
->flags
& ASYNC_HUP_NOTIFY
)
927 * Based on type of open being done check if it can overlap with any
928 * previous opens still in effect. If we are a normal serial device
929 * then also we might have to wait for carrier.
931 if (!(filp
->f_flags
& O_NONBLOCK
)) {
932 if ((rc
= stli_waitcarrier(brdp
, portp
, filp
)) != 0)
935 portp
->flags
|= ASYNC_NORMAL_ACTIVE
;
939 /*****************************************************************************/
941 static void stli_close(struct tty_struct
*tty
, struct file
*filp
)
943 struct stlibrd
*brdp
;
944 struct stliport
*portp
;
947 portp
= tty
->driver_data
;
951 spin_lock_irqsave(&stli_lock
, flags
);
952 if (tty_hung_up_p(filp
)) {
953 spin_unlock_irqrestore(&stli_lock
, flags
);
956 if ((tty
->count
== 1) && (portp
->refcount
!= 1))
958 if (portp
->refcount
-- > 1) {
959 spin_unlock_irqrestore(&stli_lock
, flags
);
963 portp
->flags
|= ASYNC_CLOSING
;
966 * May want to wait for data to drain before closing. The BUSY flag
967 * keeps track of whether we are still transmitting or not. It is
968 * updated by messages from the slave - indicating when all chars
969 * really have drained.
971 if (tty
== stli_txcooktty
)
972 stli_flushchars(tty
);
974 spin_unlock_irqrestore(&stli_lock
, flags
);
976 if (portp
->closing_wait
!= ASYNC_CLOSING_WAIT_NONE
)
977 tty_wait_until_sent(tty
, portp
->closing_wait
);
979 portp
->flags
&= ~ASYNC_INITIALIZED
;
980 brdp
= stli_brds
[portp
->brdnr
];
981 stli_rawclose(brdp
, portp
, 0, 0);
982 if (tty
->termios
->c_cflag
& HUPCL
) {
983 stli_mkasysigs(&portp
->asig
, 0, 0);
984 if (test_bit(ST_CMDING
, &portp
->state
))
985 set_bit(ST_DOSIGS
, &portp
->state
);
987 stli_sendcmd(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
988 sizeof(asysigs_t
), 0);
990 clear_bit(ST_TXBUSY
, &portp
->state
);
991 clear_bit(ST_RXSTOP
, &portp
->state
);
992 set_bit(TTY_IO_ERROR
, &tty
->flags
);
993 if (tty
->ldisc
.flush_buffer
)
994 (tty
->ldisc
.flush_buffer
)(tty
);
995 set_bit(ST_DOFLUSHRX
, &portp
->state
);
996 stli_flushbuffer(tty
);
1001 if (portp
->openwaitcnt
) {
1002 if (portp
->close_delay
)
1003 msleep_interruptible(jiffies_to_msecs(portp
->close_delay
));
1004 wake_up_interruptible(&portp
->open_wait
);
1007 portp
->flags
&= ~(ASYNC_NORMAL_ACTIVE
|ASYNC_CLOSING
);
1008 wake_up_interruptible(&portp
->close_wait
);
1011 /*****************************************************************************/
1014 * Carry out first open operations on a port. This involves a number of
1015 * commands to be sent to the slave. We need to open the port, set the
1016 * notification events, set the initial port settings, get and set the
1017 * initial signal values. We sleep and wait in between each one. But
1018 * this still all happens pretty quickly.
1021 static int stli_initopen(struct stlibrd
*brdp
, struct stliport
*portp
)
1023 struct tty_struct
*tty
;
1028 if ((rc
= stli_rawopen(brdp
, portp
, 0, 1)) < 0)
1031 memset(&nt
, 0, sizeof(asynotify_t
));
1032 nt
.data
= (DT_TXLOW
| DT_TXEMPTY
| DT_RXBUSY
| DT_RXBREAK
);
1034 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETNOTIFY
, &nt
,
1035 sizeof(asynotify_t
), 0)) < 0)
1041 stli_mkasyport(portp
, &aport
, tty
->termios
);
1042 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETPORT
, &aport
,
1043 sizeof(asyport_t
), 0)) < 0)
1046 set_bit(ST_GETSIGS
, &portp
->state
);
1047 if ((rc
= stli_cmdwait(brdp
, portp
, A_GETSIGNALS
, &portp
->asig
,
1048 sizeof(asysigs_t
), 1)) < 0)
1050 if (test_and_clear_bit(ST_GETSIGS
, &portp
->state
))
1051 portp
->sigs
= stli_mktiocm(portp
->asig
.sigvalue
);
1052 stli_mkasysigs(&portp
->asig
, 1, 1);
1053 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
1054 sizeof(asysigs_t
), 0)) < 0)
1060 /*****************************************************************************/
1063 * Send an open message to the slave. This will sleep waiting for the
1064 * acknowledgement, so must have user context. We need to co-ordinate
1065 * with close events here, since we don't want open and close events
1069 static int stli_rawopen(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long arg
, int wait
)
1071 cdkhdr_t __iomem
*hdrp
;
1072 cdkctrl_t __iomem
*cp
;
1073 unsigned char __iomem
*bits
;
1074 unsigned long flags
;
1078 * Send a message to the slave to open this port.
1082 * Slave is already closing this port. This can happen if a hangup
1083 * occurs on this port. So we must wait until it is complete. The
1084 * order of opens and closes may not be preserved across shared
1085 * memory, so we must wait until it is complete.
1087 wait_event_interruptible(portp
->raw_wait
,
1088 !test_bit(ST_CLOSING
, &portp
->state
));
1089 if (signal_pending(current
)) {
1090 return -ERESTARTSYS
;
1094 * Everything is ready now, so write the open message into shared
1095 * memory. Once the message is in set the service bits to say that
1096 * this port wants service.
1098 spin_lock_irqsave(&brd_lock
, flags
);
1100 cp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->ctrl
;
1101 writel(arg
, &cp
->openarg
);
1102 writeb(1, &cp
->open
);
1103 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1104 bits
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
+
1106 writeb(readb(bits
) | portp
->portbit
, bits
);
1110 spin_unlock_irqrestore(&brd_lock
, flags
);
1115 * Slave is in action, so now we must wait for the open acknowledgment
1119 set_bit(ST_OPENING
, &portp
->state
);
1120 spin_unlock_irqrestore(&brd_lock
, flags
);
1122 wait_event_interruptible(portp
->raw_wait
,
1123 !test_bit(ST_OPENING
, &portp
->state
));
1124 if (signal_pending(current
))
1127 if ((rc
== 0) && (portp
->rc
!= 0))
1132 /*****************************************************************************/
1135 * Send a close message to the slave. Normally this will sleep waiting
1136 * for the acknowledgement, but if wait parameter is 0 it will not. If
1137 * wait is true then must have user context (to sleep).
1140 static int stli_rawclose(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long arg
, int wait
)
1142 cdkhdr_t __iomem
*hdrp
;
1143 cdkctrl_t __iomem
*cp
;
1144 unsigned char __iomem
*bits
;
1145 unsigned long flags
;
1149 * Slave is already closing this port. This can happen if a hangup
1150 * occurs on this port.
1153 wait_event_interruptible(portp
->raw_wait
,
1154 !test_bit(ST_CLOSING
, &portp
->state
));
1155 if (signal_pending(current
)) {
1156 return -ERESTARTSYS
;
1161 * Write the close command into shared memory.
1163 spin_lock_irqsave(&brd_lock
, flags
);
1165 cp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->ctrl
;
1166 writel(arg
, &cp
->closearg
);
1167 writeb(1, &cp
->close
);
1168 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1169 bits
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
+
1171 writeb(readb(bits
) |portp
->portbit
, bits
);
1174 set_bit(ST_CLOSING
, &portp
->state
);
1175 spin_unlock_irqrestore(&brd_lock
, flags
);
1181 * Slave is in action, so now we must wait for the open acknowledgment
1185 wait_event_interruptible(portp
->raw_wait
,
1186 !test_bit(ST_CLOSING
, &portp
->state
));
1187 if (signal_pending(current
))
1190 if ((rc
== 0) && (portp
->rc
!= 0))
1195 /*****************************************************************************/
1198 * Send a command to the slave and wait for the response. This must
1199 * have user context (it sleeps). This routine is generic in that it
1200 * can send any type of command. Its purpose is to wait for that command
1201 * to complete (as opposed to initiating the command then returning).
1204 static int stli_cmdwait(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
)
1206 wait_event_interruptible(portp
->raw_wait
,
1207 !test_bit(ST_CMDING
, &portp
->state
));
1208 if (signal_pending(current
))
1209 return -ERESTARTSYS
;
1211 stli_sendcmd(brdp
, portp
, cmd
, arg
, size
, copyback
);
1213 wait_event_interruptible(portp
->raw_wait
,
1214 !test_bit(ST_CMDING
, &portp
->state
));
1215 if (signal_pending(current
))
1216 return -ERESTARTSYS
;
1223 /*****************************************************************************/
1226 * Send the termios settings for this port to the slave. This sleeps
1227 * waiting for the command to complete - so must have user context.
1230 static int stli_setport(struct stliport
*portp
)
1232 struct stlibrd
*brdp
;
1237 if (portp
->tty
== NULL
)
1239 if (portp
->brdnr
>= stli_nrbrds
)
1241 brdp
= stli_brds
[portp
->brdnr
];
1245 stli_mkasyport(portp
, &aport
, portp
->tty
->termios
);
1246 return(stli_cmdwait(brdp
, portp
, A_SETPORT
, &aport
, sizeof(asyport_t
), 0));
1249 /*****************************************************************************/
1252 * Possibly need to wait for carrier (DCD signal) to come high. Say
1253 * maybe because if we are clocal then we don't need to wait...
1256 static int stli_waitcarrier(struct stlibrd
*brdp
, struct stliport
*portp
, struct file
*filp
)
1258 unsigned long flags
;
1264 if (portp
->tty
->termios
->c_cflag
& CLOCAL
)
1267 spin_lock_irqsave(&stli_lock
, flags
);
1268 portp
->openwaitcnt
++;
1269 if (! tty_hung_up_p(filp
))
1271 spin_unlock_irqrestore(&stli_lock
, flags
);
1274 stli_mkasysigs(&portp
->asig
, 1, 1);
1275 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETSIGNALS
,
1276 &portp
->asig
, sizeof(asysigs_t
), 0)) < 0)
1278 if (tty_hung_up_p(filp
) ||
1279 ((portp
->flags
& ASYNC_INITIALIZED
) == 0)) {
1280 if (portp
->flags
& ASYNC_HUP_NOTIFY
)
1286 if (((portp
->flags
& ASYNC_CLOSING
) == 0) &&
1287 (doclocal
|| (portp
->sigs
& TIOCM_CD
))) {
1290 if (signal_pending(current
)) {
1294 interruptible_sleep_on(&portp
->open_wait
);
1297 spin_lock_irqsave(&stli_lock
, flags
);
1298 if (! tty_hung_up_p(filp
))
1300 portp
->openwaitcnt
--;
1301 spin_unlock_irqrestore(&stli_lock
, flags
);
1306 /*****************************************************************************/
1309 * Write routine. Take the data and put it in the shared memory ring
1310 * queue. If port is not already sending chars then need to mark the
1311 * service bits for this port.
1314 static int stli_write(struct tty_struct
*tty
, const unsigned char *buf
, int count
)
1316 cdkasy_t __iomem
*ap
;
1317 cdkhdr_t __iomem
*hdrp
;
1318 unsigned char __iomem
*bits
;
1319 unsigned char __iomem
*shbuf
;
1320 unsigned char *chbuf
;
1321 struct stliport
*portp
;
1322 struct stlibrd
*brdp
;
1323 unsigned int len
, stlen
, head
, tail
, size
;
1324 unsigned long flags
;
1326 if (tty
== stli_txcooktty
)
1327 stli_flushchars(tty
);
1328 portp
= tty
->driver_data
;
1331 if (portp
->brdnr
>= stli_nrbrds
)
1333 brdp
= stli_brds
[portp
->brdnr
];
1336 chbuf
= (unsigned char *) buf
;
1339 * All data is now local, shove as much as possible into shared memory.
1341 spin_lock_irqsave(&brd_lock
, flags
);
1343 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1344 head
= (unsigned int) readw(&ap
->txq
.head
);
1345 tail
= (unsigned int) readw(&ap
->txq
.tail
);
1346 if (tail
!= ((unsigned int) readw(&ap
->txq
.tail
)))
1347 tail
= (unsigned int) readw(&ap
->txq
.tail
);
1348 size
= portp
->txsize
;
1350 len
= size
- (head
- tail
) - 1;
1351 stlen
= size
- head
;
1353 len
= tail
- head
- 1;
1357 len
= min(len
, (unsigned int)count
);
1359 shbuf
= (char __iomem
*) EBRDGETMEMPTR(brdp
, portp
->txoffset
);
1362 stlen
= min(len
, stlen
);
1363 memcpy_toio(shbuf
+ head
, chbuf
, stlen
);
1374 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1375 writew(head
, &ap
->txq
.head
);
1376 if (test_bit(ST_TXBUSY
, &portp
->state
)) {
1377 if (readl(&ap
->changed
.data
) & DT_TXEMPTY
)
1378 writel(readl(&ap
->changed
.data
) & ~DT_TXEMPTY
, &ap
->changed
.data
);
1380 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1381 bits
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
+
1383 writeb(readb(bits
) | portp
->portbit
, bits
);
1384 set_bit(ST_TXBUSY
, &portp
->state
);
1386 spin_unlock_irqrestore(&brd_lock
, flags
);
1391 /*****************************************************************************/
1394 * Output a single character. We put it into a temporary local buffer
1395 * (for speed) then write out that buffer when the flushchars routine
1396 * is called. There is a safety catch here so that if some other port
1397 * writes chars before the current buffer has been, then we write them
1398 * first them do the new ports.
1401 static void stli_putchar(struct tty_struct
*tty
, unsigned char ch
)
1403 if (tty
!= stli_txcooktty
) {
1404 if (stli_txcooktty
!= NULL
)
1405 stli_flushchars(stli_txcooktty
);
1406 stli_txcooktty
= tty
;
1409 stli_txcookbuf
[stli_txcooksize
++] = ch
;
1412 /*****************************************************************************/
1415 * Transfer characters from the local TX cooking buffer to the board.
1416 * We sort of ignore the tty that gets passed in here. We rely on the
1417 * info stored with the TX cook buffer to tell us which port to flush
1418 * the data on. In any case we clean out the TX cook buffer, for re-use
1422 static void stli_flushchars(struct tty_struct
*tty
)
1424 cdkhdr_t __iomem
*hdrp
;
1425 unsigned char __iomem
*bits
;
1426 cdkasy_t __iomem
*ap
;
1427 struct tty_struct
*cooktty
;
1428 struct stliport
*portp
;
1429 struct stlibrd
*brdp
;
1430 unsigned int len
, stlen
, head
, tail
, size
, count
, cooksize
;
1432 unsigned char __iomem
*shbuf
;
1433 unsigned long flags
;
1435 cooksize
= stli_txcooksize
;
1436 cooktty
= stli_txcooktty
;
1437 stli_txcooksize
= 0;
1438 stli_txcookrealsize
= 0;
1439 stli_txcooktty
= NULL
;
1443 if (cooktty
== NULL
)
1450 portp
= tty
->driver_data
;
1453 if (portp
->brdnr
>= stli_nrbrds
)
1455 brdp
= stli_brds
[portp
->brdnr
];
1459 spin_lock_irqsave(&brd_lock
, flags
);
1462 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1463 head
= (unsigned int) readw(&ap
->txq
.head
);
1464 tail
= (unsigned int) readw(&ap
->txq
.tail
);
1465 if (tail
!= ((unsigned int) readw(&ap
->txq
.tail
)))
1466 tail
= (unsigned int) readw(&ap
->txq
.tail
);
1467 size
= portp
->txsize
;
1469 len
= size
- (head
- tail
) - 1;
1470 stlen
= size
- head
;
1472 len
= tail
- head
- 1;
1476 len
= min(len
, cooksize
);
1478 shbuf
= EBRDGETMEMPTR(brdp
, portp
->txoffset
);
1479 buf
= stli_txcookbuf
;
1482 stlen
= min(len
, stlen
);
1483 memcpy_toio(shbuf
+ head
, buf
, stlen
);
1494 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1495 writew(head
, &ap
->txq
.head
);
1497 if (test_bit(ST_TXBUSY
, &portp
->state
)) {
1498 if (readl(&ap
->changed
.data
) & DT_TXEMPTY
)
1499 writel(readl(&ap
->changed
.data
) & ~DT_TXEMPTY
, &ap
->changed
.data
);
1501 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1502 bits
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
+
1504 writeb(readb(bits
) | portp
->portbit
, bits
);
1505 set_bit(ST_TXBUSY
, &portp
->state
);
1508 spin_unlock_irqrestore(&brd_lock
, flags
);
1511 /*****************************************************************************/
1513 static int stli_writeroom(struct tty_struct
*tty
)
1515 cdkasyrq_t __iomem
*rp
;
1516 struct stliport
*portp
;
1517 struct stlibrd
*brdp
;
1518 unsigned int head
, tail
, len
;
1519 unsigned long flags
;
1521 if (tty
== stli_txcooktty
) {
1522 if (stli_txcookrealsize
!= 0) {
1523 len
= stli_txcookrealsize
- stli_txcooksize
;
1528 portp
= tty
->driver_data
;
1531 if (portp
->brdnr
>= stli_nrbrds
)
1533 brdp
= stli_brds
[portp
->brdnr
];
1537 spin_lock_irqsave(&brd_lock
, flags
);
1539 rp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->txq
;
1540 head
= (unsigned int) readw(&rp
->head
);
1541 tail
= (unsigned int) readw(&rp
->tail
);
1542 if (tail
!= ((unsigned int) readw(&rp
->tail
)))
1543 tail
= (unsigned int) readw(&rp
->tail
);
1544 len
= (head
>= tail
) ? (portp
->txsize
- (head
- tail
)) : (tail
- head
);
1547 spin_unlock_irqrestore(&brd_lock
, flags
);
1549 if (tty
== stli_txcooktty
) {
1550 stli_txcookrealsize
= len
;
1551 len
-= stli_txcooksize
;
1556 /*****************************************************************************/
1559 * Return the number of characters in the transmit buffer. Normally we
1560 * will return the number of chars in the shared memory ring queue.
1561 * We need to kludge around the case where the shared memory buffer is
1562 * empty but not all characters have drained yet, for this case just
1563 * return that there is 1 character in the buffer!
1566 static int stli_charsinbuffer(struct tty_struct
*tty
)
1568 cdkasyrq_t __iomem
*rp
;
1569 struct stliport
*portp
;
1570 struct stlibrd
*brdp
;
1571 unsigned int head
, tail
, len
;
1572 unsigned long flags
;
1574 if (tty
== stli_txcooktty
)
1575 stli_flushchars(tty
);
1576 portp
= tty
->driver_data
;
1579 if (portp
->brdnr
>= stli_nrbrds
)
1581 brdp
= stli_brds
[portp
->brdnr
];
1585 spin_lock_irqsave(&brd_lock
, flags
);
1587 rp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->txq
;
1588 head
= (unsigned int) readw(&rp
->head
);
1589 tail
= (unsigned int) readw(&rp
->tail
);
1590 if (tail
!= ((unsigned int) readw(&rp
->tail
)))
1591 tail
= (unsigned int) readw(&rp
->tail
);
1592 len
= (head
>= tail
) ? (head
- tail
) : (portp
->txsize
- (tail
- head
));
1593 if ((len
== 0) && test_bit(ST_TXBUSY
, &portp
->state
))
1596 spin_unlock_irqrestore(&brd_lock
, flags
);
1601 /*****************************************************************************/
1604 * Generate the serial struct info.
1607 static int stli_getserial(struct stliport
*portp
, struct serial_struct __user
*sp
)
1609 struct serial_struct sio
;
1610 struct stlibrd
*brdp
;
1612 memset(&sio
, 0, sizeof(struct serial_struct
));
1613 sio
.type
= PORT_UNKNOWN
;
1614 sio
.line
= portp
->portnr
;
1616 sio
.flags
= portp
->flags
;
1617 sio
.baud_base
= portp
->baud_base
;
1618 sio
.close_delay
= portp
->close_delay
;
1619 sio
.closing_wait
= portp
->closing_wait
;
1620 sio
.custom_divisor
= portp
->custom_divisor
;
1621 sio
.xmit_fifo_size
= 0;
1624 brdp
= stli_brds
[portp
->brdnr
];
1626 sio
.port
= brdp
->iobase
;
1628 return copy_to_user(sp
, &sio
, sizeof(struct serial_struct
)) ?
1632 /*****************************************************************************/
1635 * Set port according to the serial struct info.
1636 * At this point we do not do any auto-configure stuff, so we will
1637 * just quietly ignore any requests to change irq, etc.
1640 static int stli_setserial(struct stliport
*portp
, struct serial_struct __user
*sp
)
1642 struct serial_struct sio
;
1645 if (copy_from_user(&sio
, sp
, sizeof(struct serial_struct
)))
1647 if (!capable(CAP_SYS_ADMIN
)) {
1648 if ((sio
.baud_base
!= portp
->baud_base
) ||
1649 (sio
.close_delay
!= portp
->close_delay
) ||
1650 ((sio
.flags
& ~ASYNC_USR_MASK
) !=
1651 (portp
->flags
& ~ASYNC_USR_MASK
)))
1655 portp
->flags
= (portp
->flags
& ~ASYNC_USR_MASK
) |
1656 (sio
.flags
& ASYNC_USR_MASK
);
1657 portp
->baud_base
= sio
.baud_base
;
1658 portp
->close_delay
= sio
.close_delay
;
1659 portp
->closing_wait
= sio
.closing_wait
;
1660 portp
->custom_divisor
= sio
.custom_divisor
;
1662 if ((rc
= stli_setport(portp
)) < 0)
1667 /*****************************************************************************/
1669 static int stli_tiocmget(struct tty_struct
*tty
, struct file
*file
)
1671 struct stliport
*portp
= tty
->driver_data
;
1672 struct stlibrd
*brdp
;
1677 if (portp
->brdnr
>= stli_nrbrds
)
1679 brdp
= stli_brds
[portp
->brdnr
];
1682 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1685 if ((rc
= stli_cmdwait(brdp
, portp
, A_GETSIGNALS
,
1686 &portp
->asig
, sizeof(asysigs_t
), 1)) < 0)
1689 return stli_mktiocm(portp
->asig
.sigvalue
);
1692 static int stli_tiocmset(struct tty_struct
*tty
, struct file
*file
,
1693 unsigned int set
, unsigned int clear
)
1695 struct stliport
*portp
= tty
->driver_data
;
1696 struct stlibrd
*brdp
;
1697 int rts
= -1, dtr
= -1;
1701 if (portp
->brdnr
>= stli_nrbrds
)
1703 brdp
= stli_brds
[portp
->brdnr
];
1706 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1709 if (set
& TIOCM_RTS
)
1711 if (set
& TIOCM_DTR
)
1713 if (clear
& TIOCM_RTS
)
1715 if (clear
& TIOCM_DTR
)
1718 stli_mkasysigs(&portp
->asig
, dtr
, rts
);
1720 return stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
1721 sizeof(asysigs_t
), 0);
1724 static int stli_ioctl(struct tty_struct
*tty
, struct file
*file
, unsigned int cmd
, unsigned long arg
)
1726 struct stliport
*portp
;
1727 struct stlibrd
*brdp
;
1730 void __user
*argp
= (void __user
*)arg
;
1732 portp
= tty
->driver_data
;
1735 if (portp
->brdnr
>= stli_nrbrds
)
1737 brdp
= stli_brds
[portp
->brdnr
];
1741 if ((cmd
!= TIOCGSERIAL
) && (cmd
!= TIOCSSERIAL
) &&
1742 (cmd
!= COM_GETPORTSTATS
) && (cmd
!= COM_CLRPORTSTATS
)) {
1743 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1751 rc
= put_user(((tty
->termios
->c_cflag
& CLOCAL
) ? 1 : 0),
1752 (unsigned __user
*) arg
);
1755 if ((rc
= get_user(ival
, (unsigned __user
*) arg
)) == 0)
1756 tty
->termios
->c_cflag
=
1757 (tty
->termios
->c_cflag
& ~CLOCAL
) |
1758 (ival
? CLOCAL
: 0);
1761 rc
= stli_getserial(portp
, argp
);
1764 rc
= stli_setserial(portp
, argp
);
1767 rc
= put_user(portp
->pflag
, (unsigned __user
*)argp
);
1770 if ((rc
= get_user(portp
->pflag
, (unsigned __user
*)argp
)) == 0)
1771 stli_setport(portp
);
1773 case COM_GETPORTSTATS
:
1774 rc
= stli_getportstats(portp
, argp
);
1776 case COM_CLRPORTSTATS
:
1777 rc
= stli_clrportstats(portp
, argp
);
1783 case TIOCSERGSTRUCT
:
1784 case TIOCSERGETMULTI
:
1785 case TIOCSERSETMULTI
:
1794 /*****************************************************************************/
1797 * This routine assumes that we have user context and can sleep.
1798 * Looks like it is true for the current ttys implementation..!!
1801 static void stli_settermios(struct tty_struct
*tty
, struct ktermios
*old
)
1803 struct stliport
*portp
;
1804 struct stlibrd
*brdp
;
1805 struct ktermios
*tiosp
;
1810 portp
= tty
->driver_data
;
1813 if (portp
->brdnr
>= stli_nrbrds
)
1815 brdp
= stli_brds
[portp
->brdnr
];
1819 tiosp
= tty
->termios
;
1820 if ((tiosp
->c_cflag
== old
->c_cflag
) &&
1821 (tiosp
->c_iflag
== old
->c_iflag
))
1824 stli_mkasyport(portp
, &aport
, tiosp
);
1825 stli_cmdwait(brdp
, portp
, A_SETPORT
, &aport
, sizeof(asyport_t
), 0);
1826 stli_mkasysigs(&portp
->asig
, ((tiosp
->c_cflag
& CBAUD
) ? 1 : 0), -1);
1827 stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
1828 sizeof(asysigs_t
), 0);
1829 if ((old
->c_cflag
& CRTSCTS
) && ((tiosp
->c_cflag
& CRTSCTS
) == 0))
1830 tty
->hw_stopped
= 0;
1831 if (((old
->c_cflag
& CLOCAL
) == 0) && (tiosp
->c_cflag
& CLOCAL
))
1832 wake_up_interruptible(&portp
->open_wait
);
1835 /*****************************************************************************/
1838 * Attempt to flow control who ever is sending us data. We won't really
1839 * do any flow control action here. We can't directly, and even if we
1840 * wanted to we would have to send a command to the slave. The slave
1841 * knows how to flow control, and will do so when its buffers reach its
1842 * internal high water marks. So what we will do is set a local state
1843 * bit that will stop us sending any RX data up from the poll routine
1844 * (which is the place where RX data from the slave is handled).
1847 static void stli_throttle(struct tty_struct
*tty
)
1849 struct stliport
*portp
= tty
->driver_data
;
1852 set_bit(ST_RXSTOP
, &portp
->state
);
1855 /*****************************************************************************/
1858 * Unflow control the device sending us data... That means that all
1859 * we have to do is clear the RXSTOP state bit. The next poll call
1860 * will then be able to pass the RX data back up.
1863 static void stli_unthrottle(struct tty_struct
*tty
)
1865 struct stliport
*portp
= tty
->driver_data
;
1868 clear_bit(ST_RXSTOP
, &portp
->state
);
1871 /*****************************************************************************/
1874 * Stop the transmitter.
1877 static void stli_stop(struct tty_struct
*tty
)
1881 /*****************************************************************************/
1884 * Start the transmitter again.
1887 static void stli_start(struct tty_struct
*tty
)
1891 /*****************************************************************************/
1894 * Scheduler called hang up routine. This is called from the scheduler,
1895 * not direct from the driver "poll" routine. We can't call it there
1896 * since the real local hangup code will enable/disable the board and
1897 * other things that we can't do while handling the poll. Much easier
1898 * to deal with it some time later (don't really care when, hangups
1899 * aren't that time critical).
1902 static void stli_dohangup(struct work_struct
*ugly_api
)
1904 struct stliport
*portp
= container_of(ugly_api
, struct stliport
, tqhangup
);
1905 if (portp
->tty
!= NULL
) {
1906 tty_hangup(portp
->tty
);
1910 /*****************************************************************************/
1913 * Hangup this port. This is pretty much like closing the port, only
1914 * a little more brutal. No waiting for data to drain. Shutdown the
1915 * port and maybe drop signals. This is rather tricky really. We want
1916 * to close the port as well.
1919 static void stli_hangup(struct tty_struct
*tty
)
1921 struct stliport
*portp
;
1922 struct stlibrd
*brdp
;
1923 unsigned long flags
;
1925 portp
= tty
->driver_data
;
1928 if (portp
->brdnr
>= stli_nrbrds
)
1930 brdp
= stli_brds
[portp
->brdnr
];
1934 portp
->flags
&= ~ASYNC_INITIALIZED
;
1936 if (!test_bit(ST_CLOSING
, &portp
->state
))
1937 stli_rawclose(brdp
, portp
, 0, 0);
1939 spin_lock_irqsave(&stli_lock
, flags
);
1940 if (tty
->termios
->c_cflag
& HUPCL
) {
1941 stli_mkasysigs(&portp
->asig
, 0, 0);
1942 if (test_bit(ST_CMDING
, &portp
->state
)) {
1943 set_bit(ST_DOSIGS
, &portp
->state
);
1944 set_bit(ST_DOFLUSHTX
, &portp
->state
);
1945 set_bit(ST_DOFLUSHRX
, &portp
->state
);
1947 stli_sendcmd(brdp
, portp
, A_SETSIGNALSF
,
1948 &portp
->asig
, sizeof(asysigs_t
), 0);
1952 clear_bit(ST_TXBUSY
, &portp
->state
);
1953 clear_bit(ST_RXSTOP
, &portp
->state
);
1954 set_bit(TTY_IO_ERROR
, &tty
->flags
);
1956 portp
->flags
&= ~ASYNC_NORMAL_ACTIVE
;
1957 portp
->refcount
= 0;
1958 spin_unlock_irqrestore(&stli_lock
, flags
);
1960 wake_up_interruptible(&portp
->open_wait
);
1963 /*****************************************************************************/
1966 * Flush characters from the lower buffer. We may not have user context
1967 * so we cannot sleep waiting for it to complete. Also we need to check
1968 * if there is chars for this port in the TX cook buffer, and flush them
1972 static void stli_flushbuffer(struct tty_struct
*tty
)
1974 struct stliport
*portp
;
1975 struct stlibrd
*brdp
;
1976 unsigned long ftype
, flags
;
1978 portp
= tty
->driver_data
;
1981 if (portp
->brdnr
>= stli_nrbrds
)
1983 brdp
= stli_brds
[portp
->brdnr
];
1987 spin_lock_irqsave(&brd_lock
, flags
);
1988 if (tty
== stli_txcooktty
) {
1989 stli_txcooktty
= NULL
;
1990 stli_txcooksize
= 0;
1991 stli_txcookrealsize
= 0;
1993 if (test_bit(ST_CMDING
, &portp
->state
)) {
1994 set_bit(ST_DOFLUSHTX
, &portp
->state
);
1997 if (test_bit(ST_DOFLUSHRX
, &portp
->state
)) {
1999 clear_bit(ST_DOFLUSHRX
, &portp
->state
);
2001 __stli_sendcmd(brdp
, portp
, A_FLUSH
, &ftype
, sizeof(u32
), 0);
2003 spin_unlock_irqrestore(&brd_lock
, flags
);
2007 /*****************************************************************************/
2009 static void stli_breakctl(struct tty_struct
*tty
, int state
)
2011 struct stlibrd
*brdp
;
2012 struct stliport
*portp
;
2015 portp
= tty
->driver_data
;
2018 if (portp
->brdnr
>= stli_nrbrds
)
2020 brdp
= stli_brds
[portp
->brdnr
];
2024 arg
= (state
== -1) ? BREAKON
: BREAKOFF
;
2025 stli_cmdwait(brdp
, portp
, A_BREAK
, &arg
, sizeof(long), 0);
2028 /*****************************************************************************/
2030 static void stli_waituntilsent(struct tty_struct
*tty
, int timeout
)
2032 struct stliport
*portp
;
2037 portp
= tty
->driver_data
;
2043 tend
= jiffies
+ timeout
;
2045 while (test_bit(ST_TXBUSY
, &portp
->state
)) {
2046 if (signal_pending(current
))
2048 msleep_interruptible(20);
2049 if (time_after_eq(jiffies
, tend
))
2054 /*****************************************************************************/
2056 static void stli_sendxchar(struct tty_struct
*tty
, char ch
)
2058 struct stlibrd
*brdp
;
2059 struct stliport
*portp
;
2062 portp
= tty
->driver_data
;
2065 if (portp
->brdnr
>= stli_nrbrds
)
2067 brdp
= stli_brds
[portp
->brdnr
];
2071 memset(&actrl
, 0, sizeof(asyctrl_t
));
2072 if (ch
== STOP_CHAR(tty
)) {
2073 actrl
.rxctrl
= CT_STOPFLOW
;
2074 } else if (ch
== START_CHAR(tty
)) {
2075 actrl
.rxctrl
= CT_STARTFLOW
;
2077 actrl
.txctrl
= CT_SENDCHR
;
2080 stli_cmdwait(brdp
, portp
, A_PORTCTRL
, &actrl
, sizeof(asyctrl_t
), 0);
2083 /*****************************************************************************/
2088 * Format info for a specified port. The line is deliberately limited
2089 * to 80 characters. (If it is too long it will be truncated, if too
2090 * short then padded with spaces).
2093 static int stli_portinfo(struct stlibrd
*brdp
, struct stliport
*portp
, int portnr
, char *pos
)
2098 rc
= stli_portcmdstats(portp
);
2101 if (brdp
->state
& BST_STARTED
) {
2102 switch (stli_comstats
.hwid
) {
2103 case 0: uart
= "2681"; break;
2104 case 1: uart
= "SC26198"; break;
2105 default:uart
= "CD1400"; break;
2110 sp
+= sprintf(sp
, "%d: uart:%s ", portnr
, uart
);
2112 if ((brdp
->state
& BST_STARTED
) && (rc
>= 0)) {
2113 sp
+= sprintf(sp
, "tx:%d rx:%d", (int) stli_comstats
.txtotal
,
2114 (int) stli_comstats
.rxtotal
);
2116 if (stli_comstats
.rxframing
)
2117 sp
+= sprintf(sp
, " fe:%d",
2118 (int) stli_comstats
.rxframing
);
2119 if (stli_comstats
.rxparity
)
2120 sp
+= sprintf(sp
, " pe:%d",
2121 (int) stli_comstats
.rxparity
);
2122 if (stli_comstats
.rxbreaks
)
2123 sp
+= sprintf(sp
, " brk:%d",
2124 (int) stli_comstats
.rxbreaks
);
2125 if (stli_comstats
.rxoverrun
)
2126 sp
+= sprintf(sp
, " oe:%d",
2127 (int) stli_comstats
.rxoverrun
);
2129 cnt
= sprintf(sp
, "%s%s%s%s%s ",
2130 (stli_comstats
.signals
& TIOCM_RTS
) ? "|RTS" : "",
2131 (stli_comstats
.signals
& TIOCM_CTS
) ? "|CTS" : "",
2132 (stli_comstats
.signals
& TIOCM_DTR
) ? "|DTR" : "",
2133 (stli_comstats
.signals
& TIOCM_CD
) ? "|DCD" : "",
2134 (stli_comstats
.signals
& TIOCM_DSR
) ? "|DSR" : "");
2139 for (cnt
= (sp
- pos
); (cnt
< (MAXLINE
- 1)); cnt
++)
2142 pos
[(MAXLINE
- 2)] = '+';
2143 pos
[(MAXLINE
- 1)] = '\n';
2148 /*****************************************************************************/
2151 * Port info, read from the /proc file system.
2154 static int stli_readproc(char *page
, char **start
, off_t off
, int count
, int *eof
, void *data
)
2156 struct stlibrd
*brdp
;
2157 struct stliport
*portp
;
2158 unsigned int brdnr
, portnr
, totalport
;
2167 pos
+= sprintf(pos
, "%s: version %s", stli_drvtitle
,
2169 while (pos
< (page
+ MAXLINE
- 1))
2176 * We scan through for each board, panel and port. The offset is
2177 * calculated on the fly, and irrelevant ports are skipped.
2179 for (brdnr
= 0; (brdnr
< stli_nrbrds
); brdnr
++) {
2180 brdp
= stli_brds
[brdnr
];
2183 if (brdp
->state
== 0)
2186 maxoff
= curoff
+ (brdp
->nrports
* MAXLINE
);
2187 if (off
>= maxoff
) {
2192 totalport
= brdnr
* STL_MAXPORTS
;
2193 for (portnr
= 0; (portnr
< brdp
->nrports
); portnr
++,
2195 portp
= brdp
->ports
[portnr
];
2198 if (off
>= (curoff
+= MAXLINE
))
2200 if ((pos
- page
+ MAXLINE
) > count
)
2202 pos
+= stli_portinfo(brdp
, portp
, totalport
, pos
);
2213 /*****************************************************************************/
2216 * Generic send command routine. This will send a message to the slave,
2217 * of the specified type with the specified argument. Must be very
2218 * careful of data that will be copied out from shared memory -
2219 * containing command results. The command completion is all done from
2220 * a poll routine that does not have user context. Therefore you cannot
2221 * copy back directly into user space, or to the kernel stack of a
2222 * process. This routine does not sleep, so can be called from anywhere.
2224 * The caller must hold the brd_lock (see also stli_sendcmd the usual
2228 static void __stli_sendcmd(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
)
2230 cdkhdr_t __iomem
*hdrp
;
2231 cdkctrl_t __iomem
*cp
;
2232 unsigned char __iomem
*bits
;
2233 unsigned long flags
;
2235 spin_lock_irqsave(&brd_lock
, flags
);
2237 if (test_bit(ST_CMDING
, &portp
->state
)) {
2238 printk(KERN_ERR
"STALLION: command already busy, cmd=%x!\n",
2240 spin_unlock_irqrestore(&brd_lock
, flags
);
2245 cp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->ctrl
;
2247 memcpy_toio((void __iomem
*) &(cp
->args
[0]), arg
, size
);
2250 portp
->argsize
= size
;
2253 writel(0, &cp
->status
);
2254 writel(cmd
, &cp
->cmd
);
2255 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
2256 bits
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
+
2258 writeb(readb(bits
) | portp
->portbit
, bits
);
2259 set_bit(ST_CMDING
, &portp
->state
);
2261 spin_unlock_irqrestore(&brd_lock
, flags
);
2264 static void stli_sendcmd(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
)
2266 unsigned long flags
;
2268 spin_lock_irqsave(&brd_lock
, flags
);
2269 __stli_sendcmd(brdp
, portp
, cmd
, arg
, size
, copyback
);
2270 spin_unlock_irqrestore(&brd_lock
, flags
);
2273 /*****************************************************************************/
2276 * Read data from shared memory. This assumes that the shared memory
2277 * is enabled and that interrupts are off. Basically we just empty out
2278 * the shared memory buffer into the tty buffer. Must be careful to
2279 * handle the case where we fill up the tty buffer, but still have
2280 * more chars to unload.
2283 static void stli_read(struct stlibrd
*brdp
, struct stliport
*portp
)
2285 cdkasyrq_t __iomem
*rp
;
2286 char __iomem
*shbuf
;
2287 struct tty_struct
*tty
;
2288 unsigned int head
, tail
, size
;
2289 unsigned int len
, stlen
;
2291 if (test_bit(ST_RXSTOP
, &portp
->state
))
2297 rp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->rxq
;
2298 head
= (unsigned int) readw(&rp
->head
);
2299 if (head
!= ((unsigned int) readw(&rp
->head
)))
2300 head
= (unsigned int) readw(&rp
->head
);
2301 tail
= (unsigned int) readw(&rp
->tail
);
2302 size
= portp
->rxsize
;
2307 len
= size
- (tail
- head
);
2308 stlen
= size
- tail
;
2311 len
= tty_buffer_request_room(tty
, len
);
2313 shbuf
= (char __iomem
*) EBRDGETMEMPTR(brdp
, portp
->rxoffset
);
2316 unsigned char *cptr
;
2318 stlen
= min(len
, stlen
);
2319 tty_prepare_flip_string(tty
, &cptr
, stlen
);
2320 memcpy_fromio(cptr
, shbuf
+ tail
, stlen
);
2328 rp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->rxq
;
2329 writew(tail
, &rp
->tail
);
2332 set_bit(ST_RXING
, &portp
->state
);
2334 tty_schedule_flip(tty
);
2337 /*****************************************************************************/
2340 * Set up and carry out any delayed commands. There is only a small set
2341 * of slave commands that can be done "off-level". So it is not too
2342 * difficult to deal with them here.
2345 static void stli_dodelaycmd(struct stliport
*portp
, cdkctrl_t __iomem
*cp
)
2349 if (test_bit(ST_DOSIGS
, &portp
->state
)) {
2350 if (test_bit(ST_DOFLUSHTX
, &portp
->state
) &&
2351 test_bit(ST_DOFLUSHRX
, &portp
->state
))
2352 cmd
= A_SETSIGNALSF
;
2353 else if (test_bit(ST_DOFLUSHTX
, &portp
->state
))
2354 cmd
= A_SETSIGNALSFTX
;
2355 else if (test_bit(ST_DOFLUSHRX
, &portp
->state
))
2356 cmd
= A_SETSIGNALSFRX
;
2359 clear_bit(ST_DOFLUSHTX
, &portp
->state
);
2360 clear_bit(ST_DOFLUSHRX
, &portp
->state
);
2361 clear_bit(ST_DOSIGS
, &portp
->state
);
2362 memcpy_toio((void __iomem
*) &(cp
->args
[0]), (void *) &portp
->asig
,
2364 writel(0, &cp
->status
);
2365 writel(cmd
, &cp
->cmd
);
2366 set_bit(ST_CMDING
, &portp
->state
);
2367 } else if (test_bit(ST_DOFLUSHTX
, &portp
->state
) ||
2368 test_bit(ST_DOFLUSHRX
, &portp
->state
)) {
2369 cmd
= ((test_bit(ST_DOFLUSHTX
, &portp
->state
)) ? FLUSHTX
: 0);
2370 cmd
|= ((test_bit(ST_DOFLUSHRX
, &portp
->state
)) ? FLUSHRX
: 0);
2371 clear_bit(ST_DOFLUSHTX
, &portp
->state
);
2372 clear_bit(ST_DOFLUSHRX
, &portp
->state
);
2373 memcpy_toio((void __iomem
*) &(cp
->args
[0]), (void *) &cmd
, sizeof(int));
2374 writel(0, &cp
->status
);
2375 writel(A_FLUSH
, &cp
->cmd
);
2376 set_bit(ST_CMDING
, &portp
->state
);
2380 /*****************************************************************************/
2383 * Host command service checking. This handles commands or messages
2384 * coming from the slave to the host. Must have board shared memory
2385 * enabled and interrupts off when called. Notice that by servicing the
2386 * read data last we don't need to change the shared memory pointer
2387 * during processing (which is a slow IO operation).
2388 * Return value indicates if this port is still awaiting actions from
2389 * the slave (like open, command, or even TX data being sent). If 0
2390 * then port is still busy, otherwise no longer busy.
2393 static int stli_hostcmd(struct stlibrd
*brdp
, struct stliport
*portp
)
2395 cdkasy_t __iomem
*ap
;
2396 cdkctrl_t __iomem
*cp
;
2397 struct tty_struct
*tty
;
2399 unsigned long oldsigs
;
2402 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
2406 * Check if we are waiting for an open completion message.
2408 if (test_bit(ST_OPENING
, &portp
->state
)) {
2409 rc
= readl(&cp
->openarg
);
2410 if (readb(&cp
->open
) == 0 && rc
!= 0) {
2413 writel(0, &cp
->openarg
);
2415 clear_bit(ST_OPENING
, &portp
->state
);
2416 wake_up_interruptible(&portp
->raw_wait
);
2421 * Check if we are waiting for a close completion message.
2423 if (test_bit(ST_CLOSING
, &portp
->state
)) {
2424 rc
= (int) readl(&cp
->closearg
);
2425 if (readb(&cp
->close
) == 0 && rc
!= 0) {
2428 writel(0, &cp
->closearg
);
2430 clear_bit(ST_CLOSING
, &portp
->state
);
2431 wake_up_interruptible(&portp
->raw_wait
);
2436 * Check if we are waiting for a command completion message. We may
2437 * need to copy out the command results associated with this command.
2439 if (test_bit(ST_CMDING
, &portp
->state
)) {
2440 rc
= readl(&cp
->status
);
2441 if (readl(&cp
->cmd
) == 0 && rc
!= 0) {
2444 if (portp
->argp
!= NULL
) {
2445 memcpy_fromio(portp
->argp
, (void __iomem
*) &(cp
->args
[0]),
2449 writel(0, &cp
->status
);
2451 clear_bit(ST_CMDING
, &portp
->state
);
2452 stli_dodelaycmd(portp
, cp
);
2453 wake_up_interruptible(&portp
->raw_wait
);
2458 * Check for any notification messages ready. This includes lots of
2459 * different types of events - RX chars ready, RX break received,
2460 * TX data low or empty in the slave, modem signals changed state.
2469 if (nt
.signal
& SG_DCD
) {
2470 oldsigs
= portp
->sigs
;
2471 portp
->sigs
= stli_mktiocm(nt
.sigvalue
);
2472 clear_bit(ST_GETSIGS
, &portp
->state
);
2473 if ((portp
->sigs
& TIOCM_CD
) &&
2474 ((oldsigs
& TIOCM_CD
) == 0))
2475 wake_up_interruptible(&portp
->open_wait
);
2476 if ((oldsigs
& TIOCM_CD
) &&
2477 ((portp
->sigs
& TIOCM_CD
) == 0)) {
2478 if (portp
->flags
& ASYNC_CHECK_CD
) {
2480 schedule_work(&portp
->tqhangup
);
2485 if (nt
.data
& DT_TXEMPTY
)
2486 clear_bit(ST_TXBUSY
, &portp
->state
);
2487 if (nt
.data
& (DT_TXEMPTY
| DT_TXLOW
)) {
2491 wake_up_interruptible(&tty
->write_wait
);
2495 if ((nt
.data
& DT_RXBREAK
) && (portp
->rxmarkmsk
& BRKINT
)) {
2497 tty_insert_flip_char(tty
, 0, TTY_BREAK
);
2498 if (portp
->flags
& ASYNC_SAK
) {
2502 tty_schedule_flip(tty
);
2506 if (nt
.data
& DT_RXBUSY
) {
2508 stli_read(brdp
, portp
);
2513 * It might seem odd that we are checking for more RX chars here.
2514 * But, we need to handle the case where the tty buffer was previously
2515 * filled, but we had more characters to pass up. The slave will not
2516 * send any more RX notify messages until the RX buffer has been emptied.
2517 * But it will leave the service bits on (since the buffer is not empty).
2518 * So from here we can try to process more RX chars.
2520 if ((!donerx
) && test_bit(ST_RXING
, &portp
->state
)) {
2521 clear_bit(ST_RXING
, &portp
->state
);
2522 stli_read(brdp
, portp
);
2525 return((test_bit(ST_OPENING
, &portp
->state
) ||
2526 test_bit(ST_CLOSING
, &portp
->state
) ||
2527 test_bit(ST_CMDING
, &portp
->state
) ||
2528 test_bit(ST_TXBUSY
, &portp
->state
) ||
2529 test_bit(ST_RXING
, &portp
->state
)) ? 0 : 1);
2532 /*****************************************************************************/
2535 * Service all ports on a particular board. Assumes that the boards
2536 * shared memory is enabled, and that the page pointer is pointed
2537 * at the cdk header structure.
2540 static void stli_brdpoll(struct stlibrd
*brdp
, cdkhdr_t __iomem
*hdrp
)
2542 struct stliport
*portp
;
2543 unsigned char hostbits
[(STL_MAXCHANS
/ 8) + 1];
2544 unsigned char slavebits
[(STL_MAXCHANS
/ 8) + 1];
2545 unsigned char __iomem
*slavep
;
2546 int bitpos
, bitat
, bitsize
;
2547 int channr
, nrdevs
, slavebitchange
;
2549 bitsize
= brdp
->bitsize
;
2550 nrdevs
= brdp
->nrdevs
;
2553 * Check if slave wants any service. Basically we try to do as
2554 * little work as possible here. There are 2 levels of service
2555 * bits. So if there is nothing to do we bail early. We check
2556 * 8 service bits at a time in the inner loop, so we can bypass
2557 * the lot if none of them want service.
2559 memcpy_fromio(&hostbits
[0], (((unsigned char __iomem
*) hdrp
) + brdp
->hostoffset
),
2562 memset(&slavebits
[0], 0, bitsize
);
2565 for (bitpos
= 0; (bitpos
< bitsize
); bitpos
++) {
2566 if (hostbits
[bitpos
] == 0)
2568 channr
= bitpos
* 8;
2569 for (bitat
= 0x1; (channr
< nrdevs
); channr
++, bitat
<<= 1) {
2570 if (hostbits
[bitpos
] & bitat
) {
2571 portp
= brdp
->ports
[(channr
- 1)];
2572 if (stli_hostcmd(brdp
, portp
)) {
2574 slavebits
[bitpos
] |= bitat
;
2581 * If any of the ports are no longer busy then update them in the
2582 * slave request bits. We need to do this after, since a host port
2583 * service may initiate more slave requests.
2585 if (slavebitchange
) {
2586 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
2587 slavep
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
;
2588 for (bitpos
= 0; (bitpos
< bitsize
); bitpos
++) {
2589 if (readb(slavebits
+ bitpos
))
2590 writeb(readb(slavep
+ bitpos
) & ~slavebits
[bitpos
], slavebits
+ bitpos
);
2595 /*****************************************************************************/
2598 * Driver poll routine. This routine polls the boards in use and passes
2599 * messages back up to host when necessary. This is actually very
2600 * CPU efficient, since we will always have the kernel poll clock, it
2601 * adds only a few cycles when idle (since board service can be
2602 * determined very easily), but when loaded generates no interrupts
2603 * (with their expensive associated context change).
2606 static void stli_poll(unsigned long arg
)
2608 cdkhdr_t __iomem
*hdrp
;
2609 struct stlibrd
*brdp
;
2612 stli_timerlist
.expires
= STLI_TIMEOUT
;
2613 add_timer(&stli_timerlist
);
2616 * Check each board and do any servicing required.
2618 for (brdnr
= 0; (brdnr
< stli_nrbrds
); brdnr
++) {
2619 brdp
= stli_brds
[brdnr
];
2622 if ((brdp
->state
& BST_STARTED
) == 0)
2625 spin_lock(&brd_lock
);
2627 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
2628 if (readb(&hdrp
->hostreq
))
2629 stli_brdpoll(brdp
, hdrp
);
2631 spin_unlock(&brd_lock
);
2635 /*****************************************************************************/
2638 * Translate the termios settings into the port setting structure of
2642 static void stli_mkasyport(struct stliport
*portp
, asyport_t
*pp
, struct ktermios
*tiosp
)
2644 memset(pp
, 0, sizeof(asyport_t
));
2647 * Start of by setting the baud, char size, parity and stop bit info.
2649 pp
->baudout
= tty_get_baud_rate(portp
->tty
);
2650 if ((tiosp
->c_cflag
& CBAUD
) == B38400
) {
2651 if ((portp
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_HI
)
2652 pp
->baudout
= 57600;
2653 else if ((portp
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_VHI
)
2654 pp
->baudout
= 115200;
2655 else if ((portp
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_SHI
)
2656 pp
->baudout
= 230400;
2657 else if ((portp
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_WARP
)
2658 pp
->baudout
= 460800;
2659 else if ((portp
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_CUST
)
2660 pp
->baudout
= (portp
->baud_base
/ portp
->custom_divisor
);
2662 if (pp
->baudout
> STL_MAXBAUD
)
2663 pp
->baudout
= STL_MAXBAUD
;
2664 pp
->baudin
= pp
->baudout
;
2666 switch (tiosp
->c_cflag
& CSIZE
) {
2681 if (tiosp
->c_cflag
& CSTOPB
)
2682 pp
->stopbs
= PT_STOP2
;
2684 pp
->stopbs
= PT_STOP1
;
2686 if (tiosp
->c_cflag
& PARENB
) {
2687 if (tiosp
->c_cflag
& PARODD
)
2688 pp
->parity
= PT_ODDPARITY
;
2690 pp
->parity
= PT_EVENPARITY
;
2692 pp
->parity
= PT_NOPARITY
;
2696 * Set up any flow control options enabled.
2698 if (tiosp
->c_iflag
& IXON
) {
2700 if (tiosp
->c_iflag
& IXANY
)
2701 pp
->flow
|= F_IXANY
;
2703 if (tiosp
->c_cflag
& CRTSCTS
)
2704 pp
->flow
|= (F_RTSFLOW
| F_CTSFLOW
);
2706 pp
->startin
= tiosp
->c_cc
[VSTART
];
2707 pp
->stopin
= tiosp
->c_cc
[VSTOP
];
2708 pp
->startout
= tiosp
->c_cc
[VSTART
];
2709 pp
->stopout
= tiosp
->c_cc
[VSTOP
];
2712 * Set up the RX char marking mask with those RX error types we must
2713 * catch. We can get the slave to help us out a little here, it will
2714 * ignore parity errors and breaks for us, and mark parity errors in
2717 if (tiosp
->c_iflag
& IGNPAR
)
2718 pp
->iflag
|= FI_IGNRXERRS
;
2719 if (tiosp
->c_iflag
& IGNBRK
)
2720 pp
->iflag
|= FI_IGNBREAK
;
2722 portp
->rxmarkmsk
= 0;
2723 if (tiosp
->c_iflag
& (INPCK
| PARMRK
))
2724 pp
->iflag
|= FI_1MARKRXERRS
;
2725 if (tiosp
->c_iflag
& BRKINT
)
2726 portp
->rxmarkmsk
|= BRKINT
;
2729 * Set up clocal processing as required.
2731 if (tiosp
->c_cflag
& CLOCAL
)
2732 portp
->flags
&= ~ASYNC_CHECK_CD
;
2734 portp
->flags
|= ASYNC_CHECK_CD
;
2737 * Transfer any persistent flags into the asyport structure.
2739 pp
->pflag
= (portp
->pflag
& 0xffff);
2740 pp
->vmin
= (portp
->pflag
& P_RXIMIN
) ? 1 : 0;
2741 pp
->vtime
= (portp
->pflag
& P_RXITIME
) ? 1 : 0;
2742 pp
->cc
[1] = (portp
->pflag
& P_RXTHOLD
) ? 1 : 0;
2745 /*****************************************************************************/
2748 * Construct a slave signals structure for setting the DTR and RTS
2749 * signals as specified.
2752 static void stli_mkasysigs(asysigs_t
*sp
, int dtr
, int rts
)
2754 memset(sp
, 0, sizeof(asysigs_t
));
2756 sp
->signal
|= SG_DTR
;
2757 sp
->sigvalue
|= ((dtr
> 0) ? SG_DTR
: 0);
2760 sp
->signal
|= SG_RTS
;
2761 sp
->sigvalue
|= ((rts
> 0) ? SG_RTS
: 0);
2765 /*****************************************************************************/
2768 * Convert the signals returned from the slave into a local TIOCM type
2769 * signals value. We keep them locally in TIOCM format.
2772 static long stli_mktiocm(unsigned long sigvalue
)
2775 tiocm
|= ((sigvalue
& SG_DCD
) ? TIOCM_CD
: 0);
2776 tiocm
|= ((sigvalue
& SG_CTS
) ? TIOCM_CTS
: 0);
2777 tiocm
|= ((sigvalue
& SG_RI
) ? TIOCM_RI
: 0);
2778 tiocm
|= ((sigvalue
& SG_DSR
) ? TIOCM_DSR
: 0);
2779 tiocm
|= ((sigvalue
& SG_DTR
) ? TIOCM_DTR
: 0);
2780 tiocm
|= ((sigvalue
& SG_RTS
) ? TIOCM_RTS
: 0);
2784 /*****************************************************************************/
2787 * All panels and ports actually attached have been worked out. All
2788 * we need to do here is set up the appropriate per port data structures.
2791 static int stli_initports(struct stlibrd
*brdp
)
2793 struct stliport
*portp
;
2794 unsigned int i
, panelnr
, panelport
;
2796 for (i
= 0, panelnr
= 0, panelport
= 0; (i
< brdp
->nrports
); i
++) {
2797 portp
= kzalloc(sizeof(struct stliport
), GFP_KERNEL
);
2799 printk("STALLION: failed to allocate port structure\n");
2803 portp
->magic
= STLI_PORTMAGIC
;
2805 portp
->brdnr
= brdp
->brdnr
;
2806 portp
->panelnr
= panelnr
;
2807 portp
->baud_base
= STL_BAUDBASE
;
2808 portp
->close_delay
= STL_CLOSEDELAY
;
2809 portp
->closing_wait
= 30 * HZ
;
2810 INIT_WORK(&portp
->tqhangup
, stli_dohangup
);
2811 init_waitqueue_head(&portp
->open_wait
);
2812 init_waitqueue_head(&portp
->close_wait
);
2813 init_waitqueue_head(&portp
->raw_wait
);
2815 if (panelport
>= brdp
->panels
[panelnr
]) {
2819 brdp
->ports
[i
] = portp
;
2825 /*****************************************************************************/
2828 * All the following routines are board specific hardware operations.
2831 static void stli_ecpinit(struct stlibrd
*brdp
)
2833 unsigned long memconf
;
2835 outb(ECP_ATSTOP
, (brdp
->iobase
+ ECP_ATCONFR
));
2837 outb(ECP_ATDISABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
2840 memconf
= (brdp
->memaddr
& ECP_ATADDRMASK
) >> ECP_ATADDRSHFT
;
2841 outb(memconf
, (brdp
->iobase
+ ECP_ATMEMAR
));
2844 /*****************************************************************************/
2846 static void stli_ecpenable(struct stlibrd
*brdp
)
2848 outb(ECP_ATENABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
2851 /*****************************************************************************/
2853 static void stli_ecpdisable(struct stlibrd
*brdp
)
2855 outb(ECP_ATDISABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
2858 /*****************************************************************************/
2860 static void __iomem
*stli_ecpgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2865 if (offset
> brdp
->memsize
) {
2866 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
2867 "range at line=%d(%d), brd=%d\n",
2868 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
2872 ptr
= brdp
->membase
+ (offset
% ECP_ATPAGESIZE
);
2873 val
= (unsigned char) (offset
/ ECP_ATPAGESIZE
);
2875 outb(val
, (brdp
->iobase
+ ECP_ATMEMPR
));
2879 /*****************************************************************************/
2881 static void stli_ecpreset(struct stlibrd
*brdp
)
2883 outb(ECP_ATSTOP
, (brdp
->iobase
+ ECP_ATCONFR
));
2885 outb(ECP_ATDISABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
2889 /*****************************************************************************/
2891 static void stli_ecpintr(struct stlibrd
*brdp
)
2893 outb(0x1, brdp
->iobase
);
2896 /*****************************************************************************/
2899 * The following set of functions act on ECP EISA boards.
2902 static void stli_ecpeiinit(struct stlibrd
*brdp
)
2904 unsigned long memconf
;
2906 outb(0x1, (brdp
->iobase
+ ECP_EIBRDENAB
));
2907 outb(ECP_EISTOP
, (brdp
->iobase
+ ECP_EICONFR
));
2909 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
2912 memconf
= (brdp
->memaddr
& ECP_EIADDRMASKL
) >> ECP_EIADDRSHFTL
;
2913 outb(memconf
, (brdp
->iobase
+ ECP_EIMEMARL
));
2914 memconf
= (brdp
->memaddr
& ECP_EIADDRMASKH
) >> ECP_EIADDRSHFTH
;
2915 outb(memconf
, (brdp
->iobase
+ ECP_EIMEMARH
));
2918 /*****************************************************************************/
2920 static void stli_ecpeienable(struct stlibrd
*brdp
)
2922 outb(ECP_EIENABLE
, (brdp
->iobase
+ ECP_EICONFR
));
2925 /*****************************************************************************/
2927 static void stli_ecpeidisable(struct stlibrd
*brdp
)
2929 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
2932 /*****************************************************************************/
2934 static void __iomem
*stli_ecpeigetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2939 if (offset
> brdp
->memsize
) {
2940 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
2941 "range at line=%d(%d), brd=%d\n",
2942 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
2946 ptr
= brdp
->membase
+ (offset
% ECP_EIPAGESIZE
);
2947 if (offset
< ECP_EIPAGESIZE
)
2950 val
= ECP_EIENABLE
| 0x40;
2952 outb(val
, (brdp
->iobase
+ ECP_EICONFR
));
2956 /*****************************************************************************/
2958 static void stli_ecpeireset(struct stlibrd
*brdp
)
2960 outb(ECP_EISTOP
, (brdp
->iobase
+ ECP_EICONFR
));
2962 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
2966 /*****************************************************************************/
2969 * The following set of functions act on ECP MCA boards.
2972 static void stli_ecpmcenable(struct stlibrd
*brdp
)
2974 outb(ECP_MCENABLE
, (brdp
->iobase
+ ECP_MCCONFR
));
2977 /*****************************************************************************/
2979 static void stli_ecpmcdisable(struct stlibrd
*brdp
)
2981 outb(ECP_MCDISABLE
, (brdp
->iobase
+ ECP_MCCONFR
));
2984 /*****************************************************************************/
2986 static void __iomem
*stli_ecpmcgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2991 if (offset
> brdp
->memsize
) {
2992 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
2993 "range at line=%d(%d), brd=%d\n",
2994 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
2998 ptr
= brdp
->membase
+ (offset
% ECP_MCPAGESIZE
);
2999 val
= ((unsigned char) (offset
/ ECP_MCPAGESIZE
)) | ECP_MCENABLE
;
3001 outb(val
, (brdp
->iobase
+ ECP_MCCONFR
));
3005 /*****************************************************************************/
3007 static void stli_ecpmcreset(struct stlibrd
*brdp
)
3009 outb(ECP_MCSTOP
, (brdp
->iobase
+ ECP_MCCONFR
));
3011 outb(ECP_MCDISABLE
, (brdp
->iobase
+ ECP_MCCONFR
));
3015 /*****************************************************************************/
3018 * The following set of functions act on ECP PCI boards.
3021 static void stli_ecppciinit(struct stlibrd
*brdp
)
3023 outb(ECP_PCISTOP
, (brdp
->iobase
+ ECP_PCICONFR
));
3025 outb(0, (brdp
->iobase
+ ECP_PCICONFR
));
3029 /*****************************************************************************/
3031 static void __iomem
*stli_ecppcigetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
3036 if (offset
> brdp
->memsize
) {
3037 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3038 "range at line=%d(%d), board=%d\n",
3039 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3043 ptr
= brdp
->membase
+ (offset
% ECP_PCIPAGESIZE
);
3044 val
= (offset
/ ECP_PCIPAGESIZE
) << 1;
3046 outb(val
, (brdp
->iobase
+ ECP_PCICONFR
));
3050 /*****************************************************************************/
3052 static void stli_ecppcireset(struct stlibrd
*brdp
)
3054 outb(ECP_PCISTOP
, (brdp
->iobase
+ ECP_PCICONFR
));
3056 outb(0, (brdp
->iobase
+ ECP_PCICONFR
));
3060 /*****************************************************************************/
3063 * The following routines act on ONboards.
3066 static void stli_onbinit(struct stlibrd
*brdp
)
3068 unsigned long memconf
;
3070 outb(ONB_ATSTOP
, (brdp
->iobase
+ ONB_ATCONFR
));
3072 outb(ONB_ATDISABLE
, (brdp
->iobase
+ ONB_ATCONFR
));
3075 memconf
= (brdp
->memaddr
& ONB_ATADDRMASK
) >> ONB_ATADDRSHFT
;
3076 outb(memconf
, (brdp
->iobase
+ ONB_ATMEMAR
));
3077 outb(0x1, brdp
->iobase
);
3081 /*****************************************************************************/
3083 static void stli_onbenable(struct stlibrd
*brdp
)
3085 outb((brdp
->enabval
| ONB_ATENABLE
), (brdp
->iobase
+ ONB_ATCONFR
));
3088 /*****************************************************************************/
3090 static void stli_onbdisable(struct stlibrd
*brdp
)
3092 outb((brdp
->enabval
| ONB_ATDISABLE
), (brdp
->iobase
+ ONB_ATCONFR
));
3095 /*****************************************************************************/
3097 static void __iomem
*stli_onbgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
3101 if (offset
> brdp
->memsize
) {
3102 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3103 "range at line=%d(%d), brd=%d\n",
3104 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3107 ptr
= brdp
->membase
+ (offset
% ONB_ATPAGESIZE
);
3112 /*****************************************************************************/
3114 static void stli_onbreset(struct stlibrd
*brdp
)
3116 outb(ONB_ATSTOP
, (brdp
->iobase
+ ONB_ATCONFR
));
3118 outb(ONB_ATDISABLE
, (brdp
->iobase
+ ONB_ATCONFR
));
3122 /*****************************************************************************/
3125 * The following routines act on ONboard EISA.
3128 static void stli_onbeinit(struct stlibrd
*brdp
)
3130 unsigned long memconf
;
3132 outb(0x1, (brdp
->iobase
+ ONB_EIBRDENAB
));
3133 outb(ONB_EISTOP
, (brdp
->iobase
+ ONB_EICONFR
));
3135 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
3138 memconf
= (brdp
->memaddr
& ONB_EIADDRMASKL
) >> ONB_EIADDRSHFTL
;
3139 outb(memconf
, (brdp
->iobase
+ ONB_EIMEMARL
));
3140 memconf
= (brdp
->memaddr
& ONB_EIADDRMASKH
) >> ONB_EIADDRSHFTH
;
3141 outb(memconf
, (brdp
->iobase
+ ONB_EIMEMARH
));
3142 outb(0x1, brdp
->iobase
);
3146 /*****************************************************************************/
3148 static void stli_onbeenable(struct stlibrd
*brdp
)
3150 outb(ONB_EIENABLE
, (brdp
->iobase
+ ONB_EICONFR
));
3153 /*****************************************************************************/
3155 static void stli_onbedisable(struct stlibrd
*brdp
)
3157 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
3160 /*****************************************************************************/
3162 static void __iomem
*stli_onbegetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
3167 if (offset
> brdp
->memsize
) {
3168 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3169 "range at line=%d(%d), brd=%d\n",
3170 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3174 ptr
= brdp
->membase
+ (offset
% ONB_EIPAGESIZE
);
3175 if (offset
< ONB_EIPAGESIZE
)
3178 val
= ONB_EIENABLE
| 0x40;
3180 outb(val
, (brdp
->iobase
+ ONB_EICONFR
));
3184 /*****************************************************************************/
3186 static void stli_onbereset(struct stlibrd
*brdp
)
3188 outb(ONB_EISTOP
, (brdp
->iobase
+ ONB_EICONFR
));
3190 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
3194 /*****************************************************************************/
3197 * The following routines act on Brumby boards.
3200 static void stli_bbyinit(struct stlibrd
*brdp
)
3202 outb(BBY_ATSTOP
, (brdp
->iobase
+ BBY_ATCONFR
));
3204 outb(0, (brdp
->iobase
+ BBY_ATCONFR
));
3206 outb(0x1, brdp
->iobase
);
3210 /*****************************************************************************/
3212 static void __iomem
*stli_bbygetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
3217 BUG_ON(offset
> brdp
->memsize
);
3219 ptr
= brdp
->membase
+ (offset
% BBY_PAGESIZE
);
3220 val
= (unsigned char) (offset
/ BBY_PAGESIZE
);
3221 outb(val
, (brdp
->iobase
+ BBY_ATCONFR
));
3225 /*****************************************************************************/
3227 static void stli_bbyreset(struct stlibrd
*brdp
)
3229 outb(BBY_ATSTOP
, (brdp
->iobase
+ BBY_ATCONFR
));
3231 outb(0, (brdp
->iobase
+ BBY_ATCONFR
));
3235 /*****************************************************************************/
3238 * The following routines act on original old Stallion boards.
3241 static void stli_stalinit(struct stlibrd
*brdp
)
3243 outb(0x1, brdp
->iobase
);
3247 /*****************************************************************************/
3249 static void __iomem
*stli_stalgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
3251 BUG_ON(offset
> brdp
->memsize
);
3252 return brdp
->membase
+ (offset
% STAL_PAGESIZE
);
3255 /*****************************************************************************/
3257 static void stli_stalreset(struct stlibrd
*brdp
)
3261 vecp
= (u32 __iomem
*) (brdp
->membase
+ 0x30);
3262 writel(0xffff0000, vecp
);
3263 outb(0, brdp
->iobase
);
3267 /*****************************************************************************/
3270 * Try to find an ECP board and initialize it. This handles only ECP
3274 static int stli_initecp(struct stlibrd
*brdp
)
3277 cdkecpsig_t __iomem
*sigsp
;
3278 unsigned int status
, nxtid
;
3280 int panelnr
, nrports
;
3282 if (!request_region(brdp
->iobase
, brdp
->iosize
, "istallion"))
3285 if ((brdp
->iobase
== 0) || (brdp
->memaddr
== 0))
3287 release_region(brdp
->iobase
, brdp
->iosize
);
3291 brdp
->iosize
= ECP_IOSIZE
;
3294 * Based on the specific board type setup the common vars to access
3295 * and enable shared memory. Set all board specific information now
3298 switch (brdp
->brdtype
) {
3300 brdp
->memsize
= ECP_MEMSIZE
;
3301 brdp
->pagesize
= ECP_ATPAGESIZE
;
3302 brdp
->init
= stli_ecpinit
;
3303 brdp
->enable
= stli_ecpenable
;
3304 brdp
->reenable
= stli_ecpenable
;
3305 brdp
->disable
= stli_ecpdisable
;
3306 brdp
->getmemptr
= stli_ecpgetmemptr
;
3307 brdp
->intr
= stli_ecpintr
;
3308 brdp
->reset
= stli_ecpreset
;
3309 name
= "serial(EC8/64)";
3313 brdp
->memsize
= ECP_MEMSIZE
;
3314 brdp
->pagesize
= ECP_EIPAGESIZE
;
3315 brdp
->init
= stli_ecpeiinit
;
3316 brdp
->enable
= stli_ecpeienable
;
3317 brdp
->reenable
= stli_ecpeienable
;
3318 brdp
->disable
= stli_ecpeidisable
;
3319 brdp
->getmemptr
= stli_ecpeigetmemptr
;
3320 brdp
->intr
= stli_ecpintr
;
3321 brdp
->reset
= stli_ecpeireset
;
3322 name
= "serial(EC8/64-EI)";
3326 brdp
->memsize
= ECP_MEMSIZE
;
3327 brdp
->pagesize
= ECP_MCPAGESIZE
;
3329 brdp
->enable
= stli_ecpmcenable
;
3330 brdp
->reenable
= stli_ecpmcenable
;
3331 brdp
->disable
= stli_ecpmcdisable
;
3332 brdp
->getmemptr
= stli_ecpmcgetmemptr
;
3333 brdp
->intr
= stli_ecpintr
;
3334 brdp
->reset
= stli_ecpmcreset
;
3335 name
= "serial(EC8/64-MCA)";
3339 brdp
->memsize
= ECP_PCIMEMSIZE
;
3340 brdp
->pagesize
= ECP_PCIPAGESIZE
;
3341 brdp
->init
= stli_ecppciinit
;
3342 brdp
->enable
= NULL
;
3343 brdp
->reenable
= NULL
;
3344 brdp
->disable
= NULL
;
3345 brdp
->getmemptr
= stli_ecppcigetmemptr
;
3346 brdp
->intr
= stli_ecpintr
;
3347 brdp
->reset
= stli_ecppcireset
;
3348 name
= "serial(EC/RA-PCI)";
3352 release_region(brdp
->iobase
, brdp
->iosize
);
3357 * The per-board operations structure is all set up, so now let's go
3358 * and get the board operational. Firstly initialize board configuration
3359 * registers. Set the memory mapping info so we can get at the boards
3364 brdp
->membase
= ioremap(brdp
->memaddr
, brdp
->memsize
);
3365 if (brdp
->membase
== NULL
)
3367 release_region(brdp
->iobase
, brdp
->iosize
);
3372 * Now that all specific code is set up, enable the shared memory and
3373 * look for the a signature area that will tell us exactly what board
3374 * this is, and what it is connected to it.
3377 sigsp
= (cdkecpsig_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_SIGADDR
);
3378 memcpy_fromio(&sig
, sigsp
, sizeof(cdkecpsig_t
));
3381 if (sig
.magic
!= cpu_to_le32(ECP_MAGIC
))
3383 release_region(brdp
->iobase
, brdp
->iosize
);
3384 iounmap(brdp
->membase
);
3385 brdp
->membase
= NULL
;
3390 * Scan through the signature looking at the panels connected to the
3391 * board. Calculate the total number of ports as we go.
3393 for (panelnr
= 0, nxtid
= 0; (panelnr
< STL_MAXPANELS
); panelnr
++) {
3394 status
= sig
.panelid
[nxtid
];
3395 if ((status
& ECH_PNLIDMASK
) != nxtid
)
3398 brdp
->panelids
[panelnr
] = status
;
3399 nrports
= (status
& ECH_PNL16PORT
) ? 16 : 8;
3400 if ((nrports
== 16) && ((status
& ECH_PNLXPID
) == 0))
3402 brdp
->panels
[panelnr
] = nrports
;
3403 brdp
->nrports
+= nrports
;
3409 brdp
->state
|= BST_FOUND
;
3413 /*****************************************************************************/
3416 * Try to find an ONboard, Brumby or Stallion board and initialize it.
3417 * This handles only these board types.
3420 static int stli_initonb(struct stlibrd
*brdp
)
3423 cdkonbsig_t __iomem
*sigsp
;
3428 * Do a basic sanity check on the IO and memory addresses.
3430 if (brdp
->iobase
== 0 || brdp
->memaddr
== 0)
3433 brdp
->iosize
= ONB_IOSIZE
;
3435 if (!request_region(brdp
->iobase
, brdp
->iosize
, "istallion"))
3439 * Based on the specific board type setup the common vars to access
3440 * and enable shared memory. Set all board specific information now
3443 switch (brdp
->brdtype
) {
3446 brdp
->memsize
= ONB_MEMSIZE
;
3447 brdp
->pagesize
= ONB_ATPAGESIZE
;
3448 brdp
->init
= stli_onbinit
;
3449 brdp
->enable
= stli_onbenable
;
3450 brdp
->reenable
= stli_onbenable
;
3451 brdp
->disable
= stli_onbdisable
;
3452 brdp
->getmemptr
= stli_onbgetmemptr
;
3453 brdp
->intr
= stli_ecpintr
;
3454 brdp
->reset
= stli_onbreset
;
3455 if (brdp
->memaddr
> 0x100000)
3456 brdp
->enabval
= ONB_MEMENABHI
;
3458 brdp
->enabval
= ONB_MEMENABLO
;
3459 name
= "serial(ONBoard)";
3463 brdp
->memsize
= ONB_EIMEMSIZE
;
3464 brdp
->pagesize
= ONB_EIPAGESIZE
;
3465 brdp
->init
= stli_onbeinit
;
3466 brdp
->enable
= stli_onbeenable
;
3467 brdp
->reenable
= stli_onbeenable
;
3468 brdp
->disable
= stli_onbedisable
;
3469 brdp
->getmemptr
= stli_onbegetmemptr
;
3470 brdp
->intr
= stli_ecpintr
;
3471 brdp
->reset
= stli_onbereset
;
3472 name
= "serial(ONBoard/E)";
3476 brdp
->memsize
= BBY_MEMSIZE
;
3477 brdp
->pagesize
= BBY_PAGESIZE
;
3478 brdp
->init
= stli_bbyinit
;
3479 brdp
->enable
= NULL
;
3480 brdp
->reenable
= NULL
;
3481 brdp
->disable
= NULL
;
3482 brdp
->getmemptr
= stli_bbygetmemptr
;
3483 brdp
->intr
= stli_ecpintr
;
3484 brdp
->reset
= stli_bbyreset
;
3485 name
= "serial(Brumby)";
3489 brdp
->memsize
= STAL_MEMSIZE
;
3490 brdp
->pagesize
= STAL_PAGESIZE
;
3491 brdp
->init
= stli_stalinit
;
3492 brdp
->enable
= NULL
;
3493 brdp
->reenable
= NULL
;
3494 brdp
->disable
= NULL
;
3495 brdp
->getmemptr
= stli_stalgetmemptr
;
3496 brdp
->intr
= stli_ecpintr
;
3497 brdp
->reset
= stli_stalreset
;
3498 name
= "serial(Stallion)";
3502 release_region(brdp
->iobase
, brdp
->iosize
);
3507 * The per-board operations structure is all set up, so now let's go
3508 * and get the board operational. Firstly initialize board configuration
3509 * registers. Set the memory mapping info so we can get at the boards
3514 brdp
->membase
= ioremap(brdp
->memaddr
, brdp
->memsize
);
3515 if (brdp
->membase
== NULL
)
3517 release_region(brdp
->iobase
, brdp
->iosize
);
3522 * Now that all specific code is set up, enable the shared memory and
3523 * look for the a signature area that will tell us exactly what board
3524 * this is, and how many ports.
3527 sigsp
= (cdkonbsig_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_SIGADDR
);
3528 memcpy_fromio(&sig
, sigsp
, sizeof(cdkonbsig_t
));
3531 if (sig
.magic0
!= cpu_to_le16(ONB_MAGIC0
) ||
3532 sig
.magic1
!= cpu_to_le16(ONB_MAGIC1
) ||
3533 sig
.magic2
!= cpu_to_le16(ONB_MAGIC2
) ||
3534 sig
.magic3
!= cpu_to_le16(ONB_MAGIC3
))
3536 release_region(brdp
->iobase
, brdp
->iosize
);
3537 iounmap(brdp
->membase
);
3538 brdp
->membase
= NULL
;
3543 * Scan through the signature alive mask and calculate how many ports
3544 * there are on this board.
3550 for (i
= 0; (i
< 16); i
++) {
3551 if (((sig
.amask0
<< i
) & 0x8000) == 0)
3556 brdp
->panels
[0] = brdp
->nrports
;
3559 brdp
->state
|= BST_FOUND
;
3563 /*****************************************************************************/
3566 * Start up a running board. This routine is only called after the
3567 * code has been down loaded to the board and is operational. It will
3568 * read in the memory map, and get the show on the road...
3571 static int stli_startbrd(struct stlibrd
*brdp
)
3573 cdkhdr_t __iomem
*hdrp
;
3574 cdkmem_t __iomem
*memp
;
3575 cdkasy_t __iomem
*ap
;
3576 unsigned long flags
;
3577 unsigned int portnr
, nrdevs
, i
;
3578 struct stliport
*portp
;
3582 spin_lock_irqsave(&brd_lock
, flags
);
3584 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
3585 nrdevs
= hdrp
->nrdevs
;
3588 printk("%s(%d): CDK version %d.%d.%d --> "
3589 "nrdevs=%d memp=%x hostp=%x slavep=%x\n",
3590 __FILE__
, __LINE__
, readb(&hdrp
->ver_release
), readb(&hdrp
->ver_modification
),
3591 readb(&hdrp
->ver_fix
), nrdevs
, (int) readl(&hdrp
->memp
), readl(&hdrp
->hostp
),
3592 readl(&hdrp
->slavep
));
3595 if (nrdevs
< (brdp
->nrports
+ 1)) {
3596 printk(KERN_ERR
"STALLION: slave failed to allocate memory for "
3597 "all devices, devices=%d\n", nrdevs
);
3598 brdp
->nrports
= nrdevs
- 1;
3600 brdp
->nrdevs
= nrdevs
;
3601 brdp
->hostoffset
= hdrp
->hostp
- CDK_CDKADDR
;
3602 brdp
->slaveoffset
= hdrp
->slavep
- CDK_CDKADDR
;
3603 brdp
->bitsize
= (nrdevs
+ 7) / 8;
3604 memoff
= readl(&hdrp
->memp
);
3605 if (memoff
> brdp
->memsize
) {
3606 printk(KERN_ERR
"STALLION: corrupted shared memory region?\n");
3608 goto stli_donestartup
;
3610 memp
= (cdkmem_t __iomem
*) EBRDGETMEMPTR(brdp
, memoff
);
3611 if (readw(&memp
->dtype
) != TYP_ASYNCTRL
) {
3612 printk(KERN_ERR
"STALLION: no slave control device found\n");
3613 goto stli_donestartup
;
3618 * Cycle through memory allocation of each port. We are guaranteed to
3619 * have all ports inside the first page of slave window, so no need to
3620 * change pages while reading memory map.
3622 for (i
= 1, portnr
= 0; (i
< nrdevs
); i
++, portnr
++, memp
++) {
3623 if (readw(&memp
->dtype
) != TYP_ASYNC
)
3625 portp
= brdp
->ports
[portnr
];
3629 portp
->addr
= readl(&memp
->offset
);
3630 portp
->reqbit
= (unsigned char) (0x1 << (i
* 8 / nrdevs
));
3631 portp
->portidx
= (unsigned char) (i
/ 8);
3632 portp
->portbit
= (unsigned char) (0x1 << (i
% 8));
3635 writeb(0xff, &hdrp
->slavereq
);
3638 * For each port setup a local copy of the RX and TX buffer offsets
3639 * and sizes. We do this separate from the above, because we need to
3640 * move the shared memory page...
3642 for (i
= 1, portnr
= 0; (i
< nrdevs
); i
++, portnr
++) {
3643 portp
= brdp
->ports
[portnr
];
3646 if (portp
->addr
== 0)
3648 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
3650 portp
->rxsize
= readw(&ap
->rxq
.size
);
3651 portp
->txsize
= readw(&ap
->txq
.size
);
3652 portp
->rxoffset
= readl(&ap
->rxq
.offset
);
3653 portp
->txoffset
= readl(&ap
->txq
.offset
);
3659 spin_unlock_irqrestore(&brd_lock
, flags
);
3662 brdp
->state
|= BST_STARTED
;
3664 if (! stli_timeron
) {
3666 stli_timerlist
.expires
= STLI_TIMEOUT
;
3667 add_timer(&stli_timerlist
);
3673 /*****************************************************************************/
3676 * Probe and initialize the specified board.
3679 static int __devinit
stli_brdinit(struct stlibrd
*brdp
)
3681 switch (brdp
->brdtype
) {
3696 printk(KERN_ERR
"STALLION: board=%d is unknown board "
3697 "type=%d\n", brdp
->brdnr
, brdp
->brdtype
);
3701 if ((brdp
->state
& BST_FOUND
) == 0) {
3702 printk(KERN_ERR
"STALLION: %s board not found, board=%d "
3704 stli_brdnames
[brdp
->brdtype
], brdp
->brdnr
,
3705 brdp
->iobase
, (int) brdp
->memaddr
);
3709 stli_initports(brdp
);
3710 printk(KERN_INFO
"STALLION: %s found, board=%d io=%x mem=%x "
3711 "nrpanels=%d nrports=%d\n", stli_brdnames
[brdp
->brdtype
],
3712 brdp
->brdnr
, brdp
->iobase
, (int) brdp
->memaddr
,
3713 brdp
->nrpanels
, brdp
->nrports
);
3717 #if STLI_EISAPROBE != 0
3718 /*****************************************************************************/
3721 * Probe around trying to find where the EISA boards shared memory
3722 * might be. This is a bit if hack, but it is the best we can do.
3725 static int stli_eisamemprobe(struct stlibrd
*brdp
)
3727 cdkecpsig_t ecpsig
, __iomem
*ecpsigp
;
3728 cdkonbsig_t onbsig
, __iomem
*onbsigp
;
3732 * First up we reset the board, to get it into a known state. There
3733 * is only 2 board types here we need to worry about. Don;t use the
3734 * standard board init routine here, it programs up the shared
3735 * memory address, and we don't know it yet...
3737 if (brdp
->brdtype
== BRD_ECPE
) {
3738 outb(0x1, (brdp
->iobase
+ ECP_EIBRDENAB
));
3739 outb(ECP_EISTOP
, (brdp
->iobase
+ ECP_EICONFR
));
3741 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
3743 stli_ecpeienable(brdp
);
3744 } else if (brdp
->brdtype
== BRD_ONBOARDE
) {
3745 outb(0x1, (brdp
->iobase
+ ONB_EIBRDENAB
));
3746 outb(ONB_EISTOP
, (brdp
->iobase
+ ONB_EICONFR
));
3748 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
3750 outb(0x1, brdp
->iobase
);
3752 stli_onbeenable(brdp
);
3758 brdp
->memsize
= ECP_MEMSIZE
;
3761 * Board shared memory is enabled, so now we have a poke around and
3762 * see if we can find it.
3764 for (i
= 0; (i
< stli_eisamempsize
); i
++) {
3765 brdp
->memaddr
= stli_eisamemprobeaddrs
[i
];
3766 brdp
->membase
= ioremap(brdp
->memaddr
, brdp
->memsize
);
3767 if (brdp
->membase
== NULL
)
3770 if (brdp
->brdtype
== BRD_ECPE
) {
3771 ecpsigp
= stli_ecpeigetmemptr(brdp
,
3772 CDK_SIGADDR
, __LINE__
);
3773 memcpy_fromio(&ecpsig
, ecpsigp
, sizeof(cdkecpsig_t
));
3774 if (ecpsig
.magic
== cpu_to_le32(ECP_MAGIC
))
3777 onbsigp
= (cdkonbsig_t __iomem
*) stli_onbegetmemptr(brdp
,
3778 CDK_SIGADDR
, __LINE__
);
3779 memcpy_fromio(&onbsig
, onbsigp
, sizeof(cdkonbsig_t
));
3780 if ((onbsig
.magic0
== cpu_to_le16(ONB_MAGIC0
)) &&
3781 (onbsig
.magic1
== cpu_to_le16(ONB_MAGIC1
)) &&
3782 (onbsig
.magic2
== cpu_to_le16(ONB_MAGIC2
)) &&
3783 (onbsig
.magic3
== cpu_to_le16(ONB_MAGIC3
)))
3787 iounmap(brdp
->membase
);
3793 * Regardless of whether we found the shared memory or not we must
3794 * disable the region. After that return success or failure.
3796 if (brdp
->brdtype
== BRD_ECPE
)
3797 stli_ecpeidisable(brdp
);
3799 stli_onbedisable(brdp
);
3803 brdp
->membase
= NULL
;
3804 printk(KERN_ERR
"STALLION: failed to probe shared memory "
3805 "region for %s in EISA slot=%d\n",
3806 stli_brdnames
[brdp
->brdtype
], (brdp
->iobase
>> 12));
3813 static int stli_getbrdnr(void)
3817 for (i
= 0; i
< STL_MAXBRDS
; i
++) {
3818 if (!stli_brds
[i
]) {
3819 if (i
>= stli_nrbrds
)
3820 stli_nrbrds
= i
+ 1;
3827 #if STLI_EISAPROBE != 0
3828 /*****************************************************************************/
3831 * Probe around and try to find any EISA boards in system. The biggest
3832 * problem here is finding out what memory address is associated with
3833 * an EISA board after it is found. The registers of the ECPE and
3834 * ONboardE are not readable - so we can't read them from there. We
3835 * don't have access to the EISA CMOS (or EISA BIOS) so we don't
3836 * actually have any way to find out the real value. The best we can
3837 * do is go probing around in the usual places hoping we can find it.
3840 static int stli_findeisabrds(void)
3842 struct stlibrd
*brdp
;
3843 unsigned int iobase
, eid
, i
;
3847 * Firstly check if this is an EISA system. If this is not an EISA system then
3848 * don't bother going any further!
3854 * Looks like an EISA system, so go searching for EISA boards.
3856 for (iobase
= 0x1000; (iobase
<= 0xc000); iobase
+= 0x1000) {
3857 outb(0xff, (iobase
+ 0xc80));
3858 eid
= inb(iobase
+ 0xc80);
3859 eid
|= inb(iobase
+ 0xc81) << 8;
3860 if (eid
!= STL_EISAID
)
3864 * We have found a board. Need to check if this board was
3865 * statically configured already (just in case!).
3867 for (i
= 0; (i
< STL_MAXBRDS
); i
++) {
3868 brdp
= stli_brds
[i
];
3871 if (brdp
->iobase
== iobase
)
3874 if (i
< STL_MAXBRDS
)
3878 * We have found a Stallion board and it is not configured already.
3879 * Allocate a board structure and initialize it.
3881 if ((brdp
= stli_allocbrd()) == NULL
)
3883 brdnr
= stli_getbrdnr();
3886 brdp
->brdnr
= (unsigned int)brdnr
;
3887 eid
= inb(iobase
+ 0xc82);
3888 if (eid
== ECP_EISAID
)
3889 brdp
->brdtype
= BRD_ECPE
;
3890 else if (eid
== ONB_EISAID
)
3891 brdp
->brdtype
= BRD_ONBOARDE
;
3893 brdp
->brdtype
= BRD_UNKNOWN
;
3894 brdp
->iobase
= iobase
;
3895 outb(0x1, (iobase
+ 0xc84));
3896 if (stli_eisamemprobe(brdp
))
3897 outb(0, (iobase
+ 0xc84));
3898 stli_brds
[brdp
->brdnr
] = brdp
;
3905 static inline int stli_findeisabrds(void) { return 0; }
3908 /*****************************************************************************/
3911 * Find the next available board number that is free.
3914 /*****************************************************************************/
3917 * We have a Stallion board. Allocate a board structure and
3918 * initialize it. Read its IO and MEMORY resources from PCI
3919 * configuration space.
3922 static int __devinit
stli_pciprobe(struct pci_dev
*pdev
,
3923 const struct pci_device_id
*ent
)
3925 struct stlibrd
*brdp
;
3926 int brdnr
, retval
= -EIO
;
3928 retval
= pci_enable_device(pdev
);
3931 brdp
= stli_allocbrd();
3936 mutex_lock(&stli_brdslock
);
3937 brdnr
= stli_getbrdnr();
3939 printk(KERN_INFO
"STALLION: too many boards found, "
3940 "maximum supported %d\n", STL_MAXBRDS
);
3941 mutex_unlock(&stli_brdslock
);
3945 brdp
->brdnr
= (unsigned int)brdnr
;
3946 stli_brds
[brdp
->brdnr
] = brdp
;
3947 mutex_unlock(&stli_brdslock
);
3948 brdp
->brdtype
= BRD_ECPPCI
;
3950 * We have all resources from the board, so lets setup the actual
3951 * board structure now.
3953 brdp
->iobase
= pci_resource_start(pdev
, 3);
3954 brdp
->memaddr
= pci_resource_start(pdev
, 2);
3955 retval
= stli_brdinit(brdp
);
3959 pci_set_drvdata(pdev
, brdp
);
3963 stli_brds
[brdp
->brdnr
] = NULL
;
3970 static void stli_pciremove(struct pci_dev
*pdev
)
3972 struct stlibrd
*brdp
= pci_get_drvdata(pdev
);
3974 stli_cleanup_ports(brdp
);
3976 iounmap(brdp
->membase
);
3977 if (brdp
->iosize
> 0)
3978 release_region(brdp
->iobase
, brdp
->iosize
);
3980 stli_brds
[brdp
->brdnr
] = NULL
;
3984 static struct pci_driver stli_pcidriver
= {
3985 .name
= "istallion",
3986 .id_table
= istallion_pci_tbl
,
3987 .probe
= stli_pciprobe
,
3988 .remove
= __devexit_p(stli_pciremove
)
3990 /*****************************************************************************/
3993 * Allocate a new board structure. Fill out the basic info in it.
3996 static struct stlibrd
*stli_allocbrd(void)
3998 struct stlibrd
*brdp
;
4000 brdp
= kzalloc(sizeof(struct stlibrd
), GFP_KERNEL
);
4002 printk(KERN_ERR
"STALLION: failed to allocate memory "
4003 "(size=%Zd)\n", sizeof(struct stlibrd
));
4006 brdp
->magic
= STLI_BOARDMAGIC
;
4010 /*****************************************************************************/
4013 * Scan through all the boards in the configuration and see what we
4017 static int stli_initbrds(void)
4019 struct stlibrd
*brdp
, *nxtbrdp
;
4020 struct stlconf conf
;
4024 for (stli_nrbrds
= 0; stli_nrbrds
< ARRAY_SIZE(stli_brdsp
);
4026 memset(&conf
, 0, sizeof(conf
));
4027 if (stli_parsebrd(&conf
, stli_brdsp
[stli_nrbrds
]) == 0)
4029 if ((brdp
= stli_allocbrd()) == NULL
)
4031 brdp
->brdnr
= stli_nrbrds
;
4032 brdp
->brdtype
= conf
.brdtype
;
4033 brdp
->iobase
= conf
.ioaddr1
;
4034 brdp
->memaddr
= conf
.memaddr
;
4035 stli_brds
[brdp
->brdnr
] = brdp
;
4039 stli_findeisabrds();
4041 retval
= pci_register_driver(&stli_pcidriver
);
4042 /* TODO: check retval and do something */
4045 * All found boards are initialized. Now for a little optimization, if
4046 * no boards are sharing the "shared memory" regions then we can just
4047 * leave them all enabled. This is in fact the usual case.
4050 if (stli_nrbrds
> 1) {
4051 for (i
= 0; (i
< stli_nrbrds
); i
++) {
4052 brdp
= stli_brds
[i
];
4055 for (j
= i
+ 1; (j
< stli_nrbrds
); j
++) {
4056 nxtbrdp
= stli_brds
[j
];
4057 if (nxtbrdp
== NULL
)
4059 if ((brdp
->membase
>= nxtbrdp
->membase
) &&
4060 (brdp
->membase
<= (nxtbrdp
->membase
+
4061 nxtbrdp
->memsize
- 1))) {
4069 if (stli_shared
== 0) {
4070 for (i
= 0; (i
< stli_nrbrds
); i
++) {
4071 brdp
= stli_brds
[i
];
4074 if (brdp
->state
& BST_FOUND
) {
4076 brdp
->enable
= NULL
;
4077 brdp
->disable
= NULL
;
4085 /*****************************************************************************/
4088 * Code to handle an "staliomem" read operation. This device is the
4089 * contents of the board shared memory. It is used for down loading
4090 * the slave image (and debugging :-)
4093 static ssize_t
stli_memread(struct file
*fp
, char __user
*buf
, size_t count
, loff_t
*offp
)
4095 unsigned long flags
;
4096 void __iomem
*memptr
;
4097 struct stlibrd
*brdp
;
4103 brdnr
= iminor(fp
->f_path
.dentry
->d_inode
);
4104 if (brdnr
>= stli_nrbrds
)
4106 brdp
= stli_brds
[brdnr
];
4109 if (brdp
->state
== 0)
4111 if (off
>= brdp
->memsize
|| off
+ count
< off
)
4114 size
= min(count
, (size_t)(brdp
->memsize
- off
));
4117 * Copy the data a page at a time
4120 p
= (void *)__get_free_page(GFP_KERNEL
);
4125 spin_lock_irqsave(&brd_lock
, flags
);
4127 memptr
= EBRDGETMEMPTR(brdp
, off
);
4128 n
= min(size
, (int)(brdp
->pagesize
- (((unsigned long) off
) % brdp
->pagesize
)));
4129 n
= min(n
, (int)PAGE_SIZE
);
4130 memcpy_fromio(p
, memptr
, n
);
4132 spin_unlock_irqrestore(&brd_lock
, flags
);
4133 if (copy_to_user(buf
, p
, n
)) {
4143 free_page((unsigned long)p
);
4147 /*****************************************************************************/
4150 * Code to handle an "staliomem" write operation. This device is the
4151 * contents of the board shared memory. It is used for down loading
4152 * the slave image (and debugging :-)
4154 * FIXME: copy under lock
4157 static ssize_t
stli_memwrite(struct file
*fp
, const char __user
*buf
, size_t count
, loff_t
*offp
)
4159 unsigned long flags
;
4160 void __iomem
*memptr
;
4161 struct stlibrd
*brdp
;
4168 brdnr
= iminor(fp
->f_path
.dentry
->d_inode
);
4170 if (brdnr
>= stli_nrbrds
)
4172 brdp
= stli_brds
[brdnr
];
4175 if (brdp
->state
== 0)
4177 if (off
>= brdp
->memsize
|| off
+ count
< off
)
4180 chbuf
= (char __user
*) buf
;
4181 size
= min(count
, (size_t)(brdp
->memsize
- off
));
4184 * Copy the data a page at a time
4187 p
= (void *)__get_free_page(GFP_KERNEL
);
4192 n
= min(size
, (int)(brdp
->pagesize
- (((unsigned long) off
) % brdp
->pagesize
)));
4193 n
= min(n
, (int)PAGE_SIZE
);
4194 if (copy_from_user(p
, chbuf
, n
)) {
4199 spin_lock_irqsave(&brd_lock
, flags
);
4201 memptr
= EBRDGETMEMPTR(brdp
, off
);
4202 memcpy_toio(memptr
, p
, n
);
4204 spin_unlock_irqrestore(&brd_lock
, flags
);
4210 free_page((unsigned long) p
);
4215 /*****************************************************************************/
4218 * Return the board stats structure to user app.
4221 static int stli_getbrdstats(combrd_t __user
*bp
)
4223 struct stlibrd
*brdp
;
4226 if (copy_from_user(&stli_brdstats
, bp
, sizeof(combrd_t
)))
4228 if (stli_brdstats
.brd
>= STL_MAXBRDS
)
4230 brdp
= stli_brds
[stli_brdstats
.brd
];
4234 memset(&stli_brdstats
, 0, sizeof(combrd_t
));
4235 stli_brdstats
.brd
= brdp
->brdnr
;
4236 stli_brdstats
.type
= brdp
->brdtype
;
4237 stli_brdstats
.hwid
= 0;
4238 stli_brdstats
.state
= brdp
->state
;
4239 stli_brdstats
.ioaddr
= brdp
->iobase
;
4240 stli_brdstats
.memaddr
= brdp
->memaddr
;
4241 stli_brdstats
.nrpanels
= brdp
->nrpanels
;
4242 stli_brdstats
.nrports
= brdp
->nrports
;
4243 for (i
= 0; (i
< brdp
->nrpanels
); i
++) {
4244 stli_brdstats
.panels
[i
].panel
= i
;
4245 stli_brdstats
.panels
[i
].hwid
= brdp
->panelids
[i
];
4246 stli_brdstats
.panels
[i
].nrports
= brdp
->panels
[i
];
4249 if (copy_to_user(bp
, &stli_brdstats
, sizeof(combrd_t
)))
4254 /*****************************************************************************/
4257 * Resolve the referenced port number into a port struct pointer.
4260 static struct stliport
*stli_getport(unsigned int brdnr
, unsigned int panelnr
,
4261 unsigned int portnr
)
4263 struct stlibrd
*brdp
;
4266 if (brdnr
>= STL_MAXBRDS
)
4268 brdp
= stli_brds
[brdnr
];
4271 for (i
= 0; (i
< panelnr
); i
++)
4272 portnr
+= brdp
->panels
[i
];
4273 if (portnr
>= brdp
->nrports
)
4275 return brdp
->ports
[portnr
];
4278 /*****************************************************************************/
4281 * Return the port stats structure to user app. A NULL port struct
4282 * pointer passed in means that we need to find out from the app
4283 * what port to get stats for (used through board control device).
4286 static int stli_portcmdstats(struct stliport
*portp
)
4288 unsigned long flags
;
4289 struct stlibrd
*brdp
;
4292 memset(&stli_comstats
, 0, sizeof(comstats_t
));
4296 brdp
= stli_brds
[portp
->brdnr
];
4300 if (brdp
->state
& BST_STARTED
) {
4301 if ((rc
= stli_cmdwait(brdp
, portp
, A_GETSTATS
,
4302 &stli_cdkstats
, sizeof(asystats_t
), 1)) < 0)
4305 memset(&stli_cdkstats
, 0, sizeof(asystats_t
));
4308 stli_comstats
.brd
= portp
->brdnr
;
4309 stli_comstats
.panel
= portp
->panelnr
;
4310 stli_comstats
.port
= portp
->portnr
;
4311 stli_comstats
.state
= portp
->state
;
4312 stli_comstats
.flags
= portp
->flags
;
4314 spin_lock_irqsave(&brd_lock
, flags
);
4315 if (portp
->tty
!= NULL
) {
4316 if (portp
->tty
->driver_data
== portp
) {
4317 stli_comstats
.ttystate
= portp
->tty
->flags
;
4318 stli_comstats
.rxbuffered
= -1;
4319 if (portp
->tty
->termios
!= NULL
) {
4320 stli_comstats
.cflags
= portp
->tty
->termios
->c_cflag
;
4321 stli_comstats
.iflags
= portp
->tty
->termios
->c_iflag
;
4322 stli_comstats
.oflags
= portp
->tty
->termios
->c_oflag
;
4323 stli_comstats
.lflags
= portp
->tty
->termios
->c_lflag
;
4327 spin_unlock_irqrestore(&brd_lock
, flags
);
4329 stli_comstats
.txtotal
= stli_cdkstats
.txchars
;
4330 stli_comstats
.rxtotal
= stli_cdkstats
.rxchars
+ stli_cdkstats
.ringover
;
4331 stli_comstats
.txbuffered
= stli_cdkstats
.txringq
;
4332 stli_comstats
.rxbuffered
+= stli_cdkstats
.rxringq
;
4333 stli_comstats
.rxoverrun
= stli_cdkstats
.overruns
;
4334 stli_comstats
.rxparity
= stli_cdkstats
.parity
;
4335 stli_comstats
.rxframing
= stli_cdkstats
.framing
;
4336 stli_comstats
.rxlost
= stli_cdkstats
.ringover
;
4337 stli_comstats
.rxbreaks
= stli_cdkstats
.rxbreaks
;
4338 stli_comstats
.txbreaks
= stli_cdkstats
.txbreaks
;
4339 stli_comstats
.txxon
= stli_cdkstats
.txstart
;
4340 stli_comstats
.txxoff
= stli_cdkstats
.txstop
;
4341 stli_comstats
.rxxon
= stli_cdkstats
.rxstart
;
4342 stli_comstats
.rxxoff
= stli_cdkstats
.rxstop
;
4343 stli_comstats
.rxrtsoff
= stli_cdkstats
.rtscnt
/ 2;
4344 stli_comstats
.rxrtson
= stli_cdkstats
.rtscnt
- stli_comstats
.rxrtsoff
;
4345 stli_comstats
.modem
= stli_cdkstats
.dcdcnt
;
4346 stli_comstats
.hwid
= stli_cdkstats
.hwid
;
4347 stli_comstats
.signals
= stli_mktiocm(stli_cdkstats
.signals
);
4352 /*****************************************************************************/
4355 * Return the port stats structure to user app. A NULL port struct
4356 * pointer passed in means that we need to find out from the app
4357 * what port to get stats for (used through board control device).
4360 static int stli_getportstats(struct stliport
*portp
, comstats_t __user
*cp
)
4362 struct stlibrd
*brdp
;
4366 if (copy_from_user(&stli_comstats
, cp
, sizeof(comstats_t
)))
4368 portp
= stli_getport(stli_comstats
.brd
, stli_comstats
.panel
,
4369 stli_comstats
.port
);
4374 brdp
= stli_brds
[portp
->brdnr
];
4378 if ((rc
= stli_portcmdstats(portp
)) < 0)
4381 return copy_to_user(cp
, &stli_comstats
, sizeof(comstats_t
)) ?
4385 /*****************************************************************************/
4388 * Clear the port stats structure. We also return it zeroed out...
4391 static int stli_clrportstats(struct stliport
*portp
, comstats_t __user
*cp
)
4393 struct stlibrd
*brdp
;
4397 if (copy_from_user(&stli_comstats
, cp
, sizeof(comstats_t
)))
4399 portp
= stli_getport(stli_comstats
.brd
, stli_comstats
.panel
,
4400 stli_comstats
.port
);
4405 brdp
= stli_brds
[portp
->brdnr
];
4409 if (brdp
->state
& BST_STARTED
) {
4410 if ((rc
= stli_cmdwait(brdp
, portp
, A_CLEARSTATS
, NULL
, 0, 0)) < 0)
4414 memset(&stli_comstats
, 0, sizeof(comstats_t
));
4415 stli_comstats
.brd
= portp
->brdnr
;
4416 stli_comstats
.panel
= portp
->panelnr
;
4417 stli_comstats
.port
= portp
->portnr
;
4419 if (copy_to_user(cp
, &stli_comstats
, sizeof(comstats_t
)))
4424 /*****************************************************************************/
4427 * Return the entire driver ports structure to a user app.
4430 static int stli_getportstruct(struct stliport __user
*arg
)
4432 struct stliport stli_dummyport
;
4433 struct stliport
*portp
;
4435 if (copy_from_user(&stli_dummyport
, arg
, sizeof(struct stliport
)))
4437 portp
= stli_getport(stli_dummyport
.brdnr
, stli_dummyport
.panelnr
,
4438 stli_dummyport
.portnr
);
4441 if (copy_to_user(arg
, portp
, sizeof(struct stliport
)))
4446 /*****************************************************************************/
4449 * Return the entire driver board structure to a user app.
4452 static int stli_getbrdstruct(struct stlibrd __user
*arg
)
4454 struct stlibrd stli_dummybrd
;
4455 struct stlibrd
*brdp
;
4457 if (copy_from_user(&stli_dummybrd
, arg
, sizeof(struct stlibrd
)))
4459 if (stli_dummybrd
.brdnr
>= STL_MAXBRDS
)
4461 brdp
= stli_brds
[stli_dummybrd
.brdnr
];
4464 if (copy_to_user(arg
, brdp
, sizeof(struct stlibrd
)))
4469 /*****************************************************************************/
4472 * The "staliomem" device is also required to do some special operations on
4473 * the board. We need to be able to send an interrupt to the board,
4474 * reset it, and start/stop it.
4477 static int stli_memioctl(struct inode
*ip
, struct file
*fp
, unsigned int cmd
, unsigned long arg
)
4479 struct stlibrd
*brdp
;
4480 int brdnr
, rc
, done
;
4481 void __user
*argp
= (void __user
*)arg
;
4484 * First up handle the board independent ioctls.
4490 case COM_GETPORTSTATS
:
4491 rc
= stli_getportstats(NULL
, argp
);
4494 case COM_CLRPORTSTATS
:
4495 rc
= stli_clrportstats(NULL
, argp
);
4498 case COM_GETBRDSTATS
:
4499 rc
= stli_getbrdstats(argp
);
4503 rc
= stli_getportstruct(argp
);
4507 rc
= stli_getbrdstruct(argp
);
4516 * Now handle the board specific ioctls. These all depend on the
4517 * minor number of the device they were called from.
4520 if (brdnr
>= STL_MAXBRDS
)
4522 brdp
= stli_brds
[brdnr
];
4525 if (brdp
->state
== 0)
4533 rc
= stli_startbrd(brdp
);
4536 brdp
->state
&= ~BST_STARTED
;
4539 brdp
->state
&= ~BST_STARTED
;
4541 if (stli_shared
== 0) {
4542 if (brdp
->reenable
!= NULL
)
4543 (* brdp
->reenable
)(brdp
);
4553 static const struct tty_operations stli_ops
= {
4555 .close
= stli_close
,
4556 .write
= stli_write
,
4557 .put_char
= stli_putchar
,
4558 .flush_chars
= stli_flushchars
,
4559 .write_room
= stli_writeroom
,
4560 .chars_in_buffer
= stli_charsinbuffer
,
4561 .ioctl
= stli_ioctl
,
4562 .set_termios
= stli_settermios
,
4563 .throttle
= stli_throttle
,
4564 .unthrottle
= stli_unthrottle
,
4566 .start
= stli_start
,
4567 .hangup
= stli_hangup
,
4568 .flush_buffer
= stli_flushbuffer
,
4569 .break_ctl
= stli_breakctl
,
4570 .wait_until_sent
= stli_waituntilsent
,
4571 .send_xchar
= stli_sendxchar
,
4572 .read_proc
= stli_readproc
,
4573 .tiocmget
= stli_tiocmget
,
4574 .tiocmset
= stli_tiocmset
,
4577 /*****************************************************************************/
4579 static int __init
stli_init(void)
4582 printk(KERN_INFO
"%s: version %s\n", stli_drvtitle
, stli_drvversion
);
4584 spin_lock_init(&stli_lock
);
4585 spin_lock_init(&brd_lock
);
4589 stli_serial
= alloc_tty_driver(STL_MAXBRDS
* STL_MAXPORTS
);
4594 * Allocate a temporary write buffer.
4596 stli_txcookbuf
= kmalloc(STLI_TXBUFSIZE
, GFP_KERNEL
);
4597 if (!stli_txcookbuf
)
4598 printk(KERN_ERR
"STALLION: failed to allocate memory "
4599 "(size=%d)\n", STLI_TXBUFSIZE
);
4602 * Set up a character driver for the shared memory region. We need this
4603 * to down load the slave code image. Also it is a useful debugging tool.
4605 if (register_chrdev(STL_SIOMEMMAJOR
, "staliomem", &stli_fsiomem
))
4606 printk(KERN_ERR
"STALLION: failed to register serial memory "
4609 istallion_class
= class_create(THIS_MODULE
, "staliomem");
4610 for (i
= 0; i
< 4; i
++)
4611 class_device_create(istallion_class
, NULL
,
4612 MKDEV(STL_SIOMEMMAJOR
, i
),
4613 NULL
, "staliomem%d", i
);
4616 * Set up the tty driver structure and register us as a driver.
4618 stli_serial
->owner
= THIS_MODULE
;
4619 stli_serial
->driver_name
= stli_drvname
;
4620 stli_serial
->name
= stli_serialname
;
4621 stli_serial
->major
= STL_SERIALMAJOR
;
4622 stli_serial
->minor_start
= 0;
4623 stli_serial
->type
= TTY_DRIVER_TYPE_SERIAL
;
4624 stli_serial
->subtype
= SERIAL_TYPE_NORMAL
;
4625 stli_serial
->init_termios
= stli_deftermios
;
4626 stli_serial
->flags
= TTY_DRIVER_REAL_RAW
;
4627 tty_set_operations(stli_serial
, &stli_ops
);
4629 if (tty_register_driver(stli_serial
)) {
4630 put_tty_driver(stli_serial
);
4631 printk(KERN_ERR
"STALLION: failed to register serial driver\n");
4637 /*****************************************************************************/