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.
17 * FIXME: brdp->state needs proper locking.
20 /*****************************************************************************/
22 #include <linux/module.h>
23 #include <linux/sched.h>
24 #include <linux/slab.h>
25 #include <linux/smp_lock.h>
26 #include <linux/interrupt.h>
27 #include <linux/tty.h>
28 #include <linux/tty_flip.h>
29 #include <linux/serial.h>
30 #include <linux/seq_file.h>
31 #include <linux/cdk.h>
32 #include <linux/comstats.h>
33 #include <linux/istallion.h>
34 #include <linux/ioport.h>
35 #include <linux/delay.h>
36 #include <linux/init.h>
37 #include <linux/device.h>
38 #include <linux/wait.h>
39 #include <linux/eisa.h>
40 #include <linux/ctype.h>
43 #include <asm/uaccess.h>
45 #include <linux/pci.h>
47 /*****************************************************************************/
50 * Define different board types. Not all of the following board types
51 * are supported by this driver. But I will use the standard "assigned"
52 * board numbers. Currently supported boards are abbreviated as:
53 * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and
57 #define BRD_STALLION 1
59 #define BRD_ONBOARD2 3
61 #define BRD_ONBOARDE 7
67 #define BRD_BRUMBY BRD_BRUMBY4
70 * Define a configuration structure to hold the board configuration.
71 * Need to set this up in the code (for now) with the boards that are
72 * to be configured into the system. This is what needs to be modified
73 * when adding/removing/modifying boards. Each line entry in the
74 * stli_brdconf[] array is a board. Each line contains io/irq/memory
75 * ranges for that board (as well as what type of board it is).
77 * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },
78 * This line will configure an EasyConnection 8/64 at io address 2a0,
79 * and shared memory address of cc000. Multiple EasyConnection 8/64
80 * boards can share the same shared memory address space. No interrupt
81 * is required for this board type.
83 * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 },
84 * This line will configure an EasyConnection 8/64 EISA in slot 5 and
85 * shared memory address of 0x80000000 (2 GByte). Multiple
86 * EasyConnection 8/64 EISA boards can share the same shared memory
87 * address space. No interrupt is required for this board type.
89 * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 },
90 * This line will configure an ONboard (ISA type) at io address 240,
91 * and shared memory address of d0000. Multiple ONboards can share
92 * the same shared memory address space. No interrupt required.
94 * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 },
95 * This line will configure a Brumby board (any number of ports!) at
96 * io address 360 and shared memory address of c8000. All Brumby boards
97 * configured into a system must have their own separate io and memory
98 * addresses. No interrupt is required.
100 * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 },
101 * This line will configure an original Stallion board at io address 330
102 * and shared memory address d0000 (this would only be valid for a "V4.0"
103 * or Rev.O Stallion board). All Stallion boards configured into the
104 * system must have their own separate io and memory addresses. No
105 * interrupt is required.
112 unsigned long memaddr
;
117 static unsigned int stli_nrbrds
;
119 /* stli_lock must NOT be taken holding brd_lock */
120 static spinlock_t stli_lock
; /* TTY logic lock */
121 static spinlock_t brd_lock
; /* Board logic lock */
124 * There is some experimental EISA board detection code in this driver.
125 * By default it is disabled, but for those that want to try it out,
126 * then set the define below to be 1.
128 #define STLI_EISAPROBE 0
130 /*****************************************************************************/
133 * Define some important driver characteristics. Device major numbers
134 * allocated as per Linux Device Registry.
136 #ifndef STL_SIOMEMMAJOR
137 #define STL_SIOMEMMAJOR 28
139 #ifndef STL_SERIALMAJOR
140 #define STL_SERIALMAJOR 24
142 #ifndef STL_CALLOUTMAJOR
143 #define STL_CALLOUTMAJOR 25
146 /*****************************************************************************/
149 * Define our local driver identity first. Set up stuff to deal with
150 * all the local structures required by a serial tty driver.
152 static char *stli_drvtitle
= "Stallion Intelligent Multiport Serial Driver";
153 static char *stli_drvname
= "istallion";
154 static char *stli_drvversion
= "5.6.0";
155 static char *stli_serialname
= "ttyE";
157 static struct tty_driver
*stli_serial
;
158 static const struct tty_port_operations stli_port_ops
;
160 #define STLI_TXBUFSIZE 4096
163 * Use a fast local buffer for cooked characters. Typically a whole
164 * bunch of cooked characters come in for a port, 1 at a time. So we
165 * save those up into a local buffer, then write out the whole lot
166 * with a large memcpy. Just use 1 buffer for all ports, since its
167 * use it is only need for short periods of time by each port.
169 static char *stli_txcookbuf
;
170 static int stli_txcooksize
;
171 static int stli_txcookrealsize
;
172 static struct tty_struct
*stli_txcooktty
;
175 * Define a local default termios struct. All ports will be created
176 * with this termios initially. Basically all it defines is a raw port
177 * at 9600 baud, 8 data bits, no parity, 1 stop bit.
179 static struct ktermios stli_deftermios
= {
180 .c_cflag
= (B9600
| CS8
| CREAD
| HUPCL
| CLOCAL
),
187 * Define global stats structures. Not used often, and can be
188 * re-used for each stats call.
190 static comstats_t stli_comstats
;
191 static combrd_t stli_brdstats
;
192 static struct asystats stli_cdkstats
;
194 /*****************************************************************************/
196 static DEFINE_MUTEX(stli_brdslock
);
197 static struct stlibrd
*stli_brds
[STL_MAXBRDS
];
199 static int stli_shared
;
202 * Per board state flags. Used with the state field of the board struct.
203 * Not really much here... All we need to do is keep track of whether
204 * the board has been detected, and whether it is actually running a slave
207 #define BST_FOUND 0x1
208 #define BST_STARTED 0x2
209 #define BST_PROBED 0x4
212 * Define the set of port state flags. These are marked for internal
213 * state purposes only, usually to do with the state of communications
214 * with the slave. Most of them need to be updated atomically, so always
215 * use the bit setting operations (unless protected by cli/sti).
222 #define ST_DOFLUSHRX 7
223 #define ST_DOFLUSHTX 8
226 #define ST_GETSIGS 11
229 * Define an array of board names as printable strings. Handy for
230 * referencing boards when printing trace and stuff.
232 static char *stli_brdnames
[] = {
265 /*****************************************************************************/
268 * Define some string labels for arguments passed from the module
269 * load line. These allow for easy board definitions, and easy
270 * modification of the io, memory and irq resoucres.
273 static char *board0
[8];
274 static char *board1
[8];
275 static char *board2
[8];
276 static char *board3
[8];
278 static char **stli_brdsp
[] = {
286 * Define a set of common board names, and types. This is used to
287 * parse any module arguments.
290 static struct stlibrdtype
{
294 { "stallion", BRD_STALLION
},
295 { "1", BRD_STALLION
},
296 { "brumby", BRD_BRUMBY
},
297 { "brumby4", BRD_BRUMBY
},
298 { "brumby/4", BRD_BRUMBY
},
299 { "brumby-4", BRD_BRUMBY
},
300 { "brumby8", BRD_BRUMBY
},
301 { "brumby/8", BRD_BRUMBY
},
302 { "brumby-8", BRD_BRUMBY
},
303 { "brumby16", BRD_BRUMBY
},
304 { "brumby/16", BRD_BRUMBY
},
305 { "brumby-16", BRD_BRUMBY
},
307 { "onboard2", BRD_ONBOARD2
},
308 { "onboard-2", BRD_ONBOARD2
},
309 { "onboard/2", BRD_ONBOARD2
},
310 { "onboard-mc", BRD_ONBOARD2
},
311 { "onboard/mc", BRD_ONBOARD2
},
312 { "onboard-mca", BRD_ONBOARD2
},
313 { "onboard/mca", BRD_ONBOARD2
},
314 { "3", BRD_ONBOARD2
},
315 { "onboard", BRD_ONBOARD
},
316 { "onboardat", BRD_ONBOARD
},
317 { "4", BRD_ONBOARD
},
318 { "onboarde", BRD_ONBOARDE
},
319 { "onboard-e", BRD_ONBOARDE
},
320 { "onboard/e", BRD_ONBOARDE
},
321 { "onboard-ei", BRD_ONBOARDE
},
322 { "onboard/ei", BRD_ONBOARDE
},
323 { "7", BRD_ONBOARDE
},
325 { "ecpat", BRD_ECP
},
326 { "ec8/64", BRD_ECP
},
327 { "ec8/64-at", BRD_ECP
},
328 { "ec8/64-isa", BRD_ECP
},
330 { "ecpe", BRD_ECPE
},
331 { "ecpei", BRD_ECPE
},
332 { "ec8/64-e", BRD_ECPE
},
333 { "ec8/64-ei", BRD_ECPE
},
335 { "ecpmc", BRD_ECPMC
},
336 { "ec8/64-mc", BRD_ECPMC
},
337 { "ec8/64-mca", BRD_ECPMC
},
339 { "ecppci", BRD_ECPPCI
},
340 { "ec/ra", BRD_ECPPCI
},
341 { "ec/ra-pc", BRD_ECPPCI
},
342 { "ec/ra-pci", BRD_ECPPCI
},
343 { "29", BRD_ECPPCI
},
347 * Define the module agruments.
349 MODULE_AUTHOR("Greg Ungerer");
350 MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver");
351 MODULE_LICENSE("GPL");
354 module_param_array(board0
, charp
, NULL
, 0);
355 MODULE_PARM_DESC(board0
, "Board 0 config -> name[,ioaddr[,memaddr]");
356 module_param_array(board1
, charp
, NULL
, 0);
357 MODULE_PARM_DESC(board1
, "Board 1 config -> name[,ioaddr[,memaddr]");
358 module_param_array(board2
, charp
, NULL
, 0);
359 MODULE_PARM_DESC(board2
, "Board 2 config -> name[,ioaddr[,memaddr]");
360 module_param_array(board3
, charp
, NULL
, 0);
361 MODULE_PARM_DESC(board3
, "Board 3 config -> name[,ioaddr[,memaddr]");
363 #if STLI_EISAPROBE != 0
365 * Set up a default memory address table for EISA board probing.
366 * The default addresses are all bellow 1Mbyte, which has to be the
367 * case anyway. They should be safe, since we only read values from
368 * them, and interrupts are disabled while we do it. If the higher
369 * memory support is compiled in then we also try probing around
370 * the 1Gb, 2Gb and 3Gb areas as well...
372 static unsigned long stli_eisamemprobeaddrs
[] = {
373 0xc0000, 0xd0000, 0xe0000, 0xf0000,
374 0x80000000, 0x80010000, 0x80020000, 0x80030000,
375 0x40000000, 0x40010000, 0x40020000, 0x40030000,
376 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000,
377 0xff000000, 0xff010000, 0xff020000, 0xff030000,
380 static int stli_eisamempsize
= ARRAY_SIZE(stli_eisamemprobeaddrs
);
384 * Define the Stallion PCI vendor and device IDs.
386 #ifndef PCI_DEVICE_ID_ECRA
387 #define PCI_DEVICE_ID_ECRA 0x0004
390 static struct pci_device_id istallion_pci_tbl
[] = {
391 { PCI_DEVICE(PCI_VENDOR_ID_STALLION
, PCI_DEVICE_ID_ECRA
), },
394 MODULE_DEVICE_TABLE(pci
, istallion_pci_tbl
);
396 static struct pci_driver stli_pcidriver
;
398 /*****************************************************************************/
401 * Hardware configuration info for ECP boards. These defines apply
402 * to the directly accessible io ports of the ECP. There is a set of
403 * defines for each ECP board type, ISA, EISA, MCA and PCI.
407 #define ECP_MEMSIZE (128 * 1024)
408 #define ECP_PCIMEMSIZE (256 * 1024)
410 #define ECP_ATPAGESIZE (4 * 1024)
411 #define ECP_MCPAGESIZE (4 * 1024)
412 #define ECP_EIPAGESIZE (64 * 1024)
413 #define ECP_PCIPAGESIZE (64 * 1024)
415 #define STL_EISAID 0x8c4e
418 * Important defines for the ISA class of ECP board.
421 #define ECP_ATCONFR 1
422 #define ECP_ATMEMAR 2
423 #define ECP_ATMEMPR 3
424 #define ECP_ATSTOP 0x1
425 #define ECP_ATINTENAB 0x10
426 #define ECP_ATENABLE 0x20
427 #define ECP_ATDISABLE 0x00
428 #define ECP_ATADDRMASK 0x3f000
429 #define ECP_ATADDRSHFT 12
432 * Important defines for the EISA class of ECP board.
435 #define ECP_EIMEMARL 1
436 #define ECP_EICONFR 2
437 #define ECP_EIMEMARH 3
438 #define ECP_EIENABLE 0x1
439 #define ECP_EIDISABLE 0x0
440 #define ECP_EISTOP 0x4
441 #define ECP_EIEDGE 0x00
442 #define ECP_EILEVEL 0x80
443 #define ECP_EIADDRMASKL 0x00ff0000
444 #define ECP_EIADDRSHFTL 16
445 #define ECP_EIADDRMASKH 0xff000000
446 #define ECP_EIADDRSHFTH 24
447 #define ECP_EIBRDENAB 0xc84
449 #define ECP_EISAID 0x4
452 * Important defines for the Micro-channel class of ECP board.
453 * (It has a lot in common with the ISA boards.)
456 #define ECP_MCCONFR 1
457 #define ECP_MCSTOP 0x20
458 #define ECP_MCENABLE 0x80
459 #define ECP_MCDISABLE 0x00
462 * Important defines for the PCI class of ECP board.
463 * (It has a lot in common with the other ECP boards.)
465 #define ECP_PCIIREG 0
466 #define ECP_PCICONFR 1
467 #define ECP_PCISTOP 0x01
470 * Hardware configuration info for ONboard and Brumby boards. These
471 * defines apply to the directly accessible io ports of these boards.
473 #define ONB_IOSIZE 16
474 #define ONB_MEMSIZE (64 * 1024)
475 #define ONB_ATPAGESIZE (64 * 1024)
476 #define ONB_MCPAGESIZE (64 * 1024)
477 #define ONB_EIMEMSIZE (128 * 1024)
478 #define ONB_EIPAGESIZE (64 * 1024)
481 * Important defines for the ISA class of ONboard board.
484 #define ONB_ATMEMAR 1
485 #define ONB_ATCONFR 2
486 #define ONB_ATSTOP 0x4
487 #define ONB_ATENABLE 0x01
488 #define ONB_ATDISABLE 0x00
489 #define ONB_ATADDRMASK 0xff0000
490 #define ONB_ATADDRSHFT 16
492 #define ONB_MEMENABLO 0
493 #define ONB_MEMENABHI 0x02
496 * Important defines for the EISA class of ONboard board.
499 #define ONB_EIMEMARL 1
500 #define ONB_EICONFR 2
501 #define ONB_EIMEMARH 3
502 #define ONB_EIENABLE 0x1
503 #define ONB_EIDISABLE 0x0
504 #define ONB_EISTOP 0x4
505 #define ONB_EIEDGE 0x00
506 #define ONB_EILEVEL 0x80
507 #define ONB_EIADDRMASKL 0x00ff0000
508 #define ONB_EIADDRSHFTL 16
509 #define ONB_EIADDRMASKH 0xff000000
510 #define ONB_EIADDRSHFTH 24
511 #define ONB_EIBRDENAB 0xc84
513 #define ONB_EISAID 0x1
516 * Important defines for the Brumby boards. They are pretty simple,
517 * there is not much that is programmably configurable.
519 #define BBY_IOSIZE 16
520 #define BBY_MEMSIZE (64 * 1024)
521 #define BBY_PAGESIZE (16 * 1024)
524 #define BBY_ATCONFR 1
525 #define BBY_ATSTOP 0x4
528 * Important defines for the Stallion boards. They are pretty simple,
529 * there is not much that is programmably configurable.
531 #define STAL_IOSIZE 16
532 #define STAL_MEMSIZE (64 * 1024)
533 #define STAL_PAGESIZE (64 * 1024)
536 * Define the set of status register values for EasyConnection panels.
537 * The signature will return with the status value for each panel. From
538 * this we can determine what is attached to the board - before we have
539 * actually down loaded any code to it.
541 #define ECH_PNLSTATUS 2
542 #define ECH_PNL16PORT 0x20
543 #define ECH_PNLIDMASK 0x07
544 #define ECH_PNLXPID 0x40
545 #define ECH_PNLINTRPEND 0x80
548 * Define some macros to do things to the board. Even those these boards
549 * are somewhat related there is often significantly different ways of
550 * doing some operation on it (like enable, paging, reset, etc). So each
551 * board class has a set of functions which do the commonly required
552 * operations. The macros below basically just call these functions,
553 * generally checking for a NULL function - which means that the board
554 * needs nothing done to it to achieve this operation!
556 #define EBRDINIT(brdp) \
557 if (brdp->init != NULL) \
560 #define EBRDENABLE(brdp) \
561 if (brdp->enable != NULL) \
562 (* brdp->enable)(brdp);
564 #define EBRDDISABLE(brdp) \
565 if (brdp->disable != NULL) \
566 (* brdp->disable)(brdp);
568 #define EBRDINTR(brdp) \
569 if (brdp->intr != NULL) \
570 (* brdp->intr)(brdp);
572 #define EBRDRESET(brdp) \
573 if (brdp->reset != NULL) \
574 (* brdp->reset)(brdp);
576 #define EBRDGETMEMPTR(brdp,offset) \
577 (* brdp->getmemptr)(brdp, offset, __LINE__)
580 * Define the maximal baud rate, and the default baud base for ports.
582 #define STL_MAXBAUD 460800
583 #define STL_BAUDBASE 115200
584 #define STL_CLOSEDELAY (5 * HZ / 10)
586 /*****************************************************************************/
589 * Define macros to extract a brd or port number from a minor number.
591 #define MINOR2BRD(min) (((min) & 0xc0) >> 6)
592 #define MINOR2PORT(min) ((min) & 0x3f)
594 /*****************************************************************************/
597 * Prototype all functions in this driver!
600 static int stli_parsebrd(struct stlconf
*confp
, char **argp
);
601 static int stli_open(struct tty_struct
*tty
, struct file
*filp
);
602 static void stli_close(struct tty_struct
*tty
, struct file
*filp
);
603 static int stli_write(struct tty_struct
*tty
, const unsigned char *buf
, int count
);
604 static int stli_putchar(struct tty_struct
*tty
, unsigned char ch
);
605 static void stli_flushchars(struct tty_struct
*tty
);
606 static int stli_writeroom(struct tty_struct
*tty
);
607 static int stli_charsinbuffer(struct tty_struct
*tty
);
608 static int stli_ioctl(struct tty_struct
*tty
, struct file
*file
, unsigned int cmd
, unsigned long arg
);
609 static void stli_settermios(struct tty_struct
*tty
, struct ktermios
*old
);
610 static void stli_throttle(struct tty_struct
*tty
);
611 static void stli_unthrottle(struct tty_struct
*tty
);
612 static void stli_stop(struct tty_struct
*tty
);
613 static void stli_start(struct tty_struct
*tty
);
614 static void stli_flushbuffer(struct tty_struct
*tty
);
615 static int stli_breakctl(struct tty_struct
*tty
, int state
);
616 static void stli_waituntilsent(struct tty_struct
*tty
, int timeout
);
617 static void stli_sendxchar(struct tty_struct
*tty
, char ch
);
618 static void stli_hangup(struct tty_struct
*tty
);
620 static int stli_brdinit(struct stlibrd
*brdp
);
621 static int stli_startbrd(struct stlibrd
*brdp
);
622 static ssize_t
stli_memread(struct file
*fp
, char __user
*buf
, size_t count
, loff_t
*offp
);
623 static ssize_t
stli_memwrite(struct file
*fp
, const char __user
*buf
, size_t count
, loff_t
*offp
);
624 static long stli_memioctl(struct file
*fp
, unsigned int cmd
, unsigned long arg
);
625 static void stli_brdpoll(struct stlibrd
*brdp
, cdkhdr_t __iomem
*hdrp
);
626 static void stli_poll(unsigned long arg
);
627 static int stli_hostcmd(struct stlibrd
*brdp
, struct stliport
*portp
);
628 static int stli_initopen(struct tty_struct
*tty
, struct stlibrd
*brdp
, struct stliport
*portp
);
629 static int stli_rawopen(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long arg
, int wait
);
630 static int stli_rawclose(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long arg
, int wait
);
631 static int stli_setport(struct tty_struct
*tty
);
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 tty_struct
*tty
, 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 tty_struct
*tty
, struct serial_struct __user
*sp
);
642 static int stli_getbrdstats(combrd_t __user
*bp
);
643 static int stli_getportstats(struct tty_struct
*tty
, struct stliport
*portp
, comstats_t __user
*cp
);
644 static int stli_portcmdstats(struct tty_struct
*tty
, 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 .unlocked_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
;
735 struct tty_struct
*tty
;
737 for (j
= 0; j
< STL_MAXPORTS
; j
++) {
738 portp
= brdp
->ports
[j
];
740 tty
= tty_port_tty_get(&portp
->port
);
750 /*****************************************************************************/
753 * Parse the supplied argument string, into the board conf struct.
756 static int stli_parsebrd(struct stlconf
*confp
, char **argp
)
761 if (argp
[0] == NULL
|| *argp
[0] == 0)
764 for (sp
= argp
[0], i
= 0; ((*sp
!= 0) && (i
< 25)); sp
++, i
++)
767 for (i
= 0; i
< ARRAY_SIZE(stli_brdstr
); i
++) {
768 if (strcmp(stli_brdstr
[i
].name
, argp
[0]) == 0)
771 if (i
== ARRAY_SIZE(stli_brdstr
)) {
772 printk(KERN_WARNING
"istallion: unknown board name, %s?\n", argp
[0]);
776 confp
->brdtype
= stli_brdstr
[i
].type
;
777 if (argp
[1] != NULL
&& *argp
[1] != 0)
778 confp
->ioaddr1
= simple_strtoul(argp
[1], NULL
, 0);
779 if (argp
[2] != NULL
&& *argp
[2] != 0)
780 confp
->memaddr
= simple_strtoul(argp
[2], NULL
, 0);
784 /*****************************************************************************/
787 * On the first open of the device setup the port hardware, and
788 * initialize the per port data structure. Since initializing the port
789 * requires several commands to the board we will need to wait for any
790 * other open that is already initializing the port.
792 * Locking: protected by the port mutex.
795 static int stli_activate(struct tty_port
*port
, struct tty_struct
*tty
)
797 struct stliport
*portp
= container_of(port
, struct stliport
, port
);
798 struct stlibrd
*brdp
= stli_brds
[portp
->brdnr
];
801 if ((rc
= stli_initopen(tty
, brdp
, portp
)) >= 0)
802 clear_bit(TTY_IO_ERROR
, &tty
->flags
);
803 wake_up_interruptible(&portp
->raw_wait
);
807 static int stli_open(struct tty_struct
*tty
, struct file
*filp
)
809 struct stlibrd
*brdp
;
810 struct stliport
*portp
;
811 unsigned int minordev
, brdnr
, portnr
;
813 minordev
= tty
->index
;
814 brdnr
= MINOR2BRD(minordev
);
815 if (brdnr
>= stli_nrbrds
)
817 brdp
= stli_brds
[brdnr
];
820 if ((brdp
->state
& BST_STARTED
) == 0)
822 portnr
= MINOR2PORT(minordev
);
823 if (portnr
> brdp
->nrports
)
826 portp
= brdp
->ports
[portnr
];
829 if (portp
->devnr
< 1)
832 tty
->driver_data
= portp
;
833 return tty_port_open(&portp
->port
, tty
, filp
);
837 /*****************************************************************************/
839 static void stli_shutdown(struct tty_port
*port
)
841 struct stlibrd
*brdp
;
844 struct stliport
*portp
= container_of(port
, struct stliport
, port
);
846 if (portp
->brdnr
>= stli_nrbrds
)
848 brdp
= stli_brds
[portp
->brdnr
];
853 * May want to wait for data to drain before closing. The BUSY
854 * flag keeps track of whether we are still transmitting or not.
855 * It is updated by messages from the slave - indicating when all
856 * chars really have drained.
859 if (!test_bit(ST_CLOSING
, &portp
->state
))
860 stli_rawclose(brdp
, portp
, 0, 0);
862 spin_lock_irqsave(&stli_lock
, flags
);
863 clear_bit(ST_TXBUSY
, &portp
->state
);
864 clear_bit(ST_RXSTOP
, &portp
->state
);
865 spin_unlock_irqrestore(&stli_lock
, flags
);
867 ftype
= FLUSHTX
| FLUSHRX
;
868 stli_cmdwait(brdp
, portp
, A_FLUSH
, &ftype
, sizeof(u32
), 0);
871 static void stli_close(struct tty_struct
*tty
, struct file
*filp
)
873 struct stliport
*portp
= tty
->driver_data
;
877 spin_lock_irqsave(&stli_lock
, flags
);
878 /* Flush any internal buffering out first */
879 if (tty
== stli_txcooktty
)
880 stli_flushchars(tty
);
881 spin_unlock_irqrestore(&stli_lock
, flags
);
882 tty_port_close(&portp
->port
, tty
, filp
);
885 /*****************************************************************************/
888 * Carry out first open operations on a port. This involves a number of
889 * commands to be sent to the slave. We need to open the port, set the
890 * notification events, set the initial port settings, get and set the
891 * initial signal values. We sleep and wait in between each one. But
892 * this still all happens pretty quickly.
895 static int stli_initopen(struct tty_struct
*tty
,
896 struct stlibrd
*brdp
, struct stliport
*portp
)
902 if ((rc
= stli_rawopen(brdp
, portp
, 0, 1)) < 0)
905 memset(&nt
, 0, sizeof(asynotify_t
));
906 nt
.data
= (DT_TXLOW
| DT_TXEMPTY
| DT_RXBUSY
| DT_RXBREAK
);
908 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETNOTIFY
, &nt
,
909 sizeof(asynotify_t
), 0)) < 0)
912 stli_mkasyport(tty
, portp
, &aport
, tty
->termios
);
913 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETPORT
, &aport
,
914 sizeof(asyport_t
), 0)) < 0)
917 set_bit(ST_GETSIGS
, &portp
->state
);
918 if ((rc
= stli_cmdwait(brdp
, portp
, A_GETSIGNALS
, &portp
->asig
,
919 sizeof(asysigs_t
), 1)) < 0)
921 if (test_and_clear_bit(ST_GETSIGS
, &portp
->state
))
922 portp
->sigs
= stli_mktiocm(portp
->asig
.sigvalue
);
923 stli_mkasysigs(&portp
->asig
, 1, 1);
924 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
925 sizeof(asysigs_t
), 0)) < 0)
931 /*****************************************************************************/
934 * Send an open message to the slave. This will sleep waiting for the
935 * acknowledgement, so must have user context. We need to co-ordinate
936 * with close events here, since we don't want open and close events
940 static int stli_rawopen(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long arg
, int wait
)
942 cdkhdr_t __iomem
*hdrp
;
943 cdkctrl_t __iomem
*cp
;
944 unsigned char __iomem
*bits
;
949 * Send a message to the slave to open this port.
953 * Slave is already closing this port. This can happen if a hangup
954 * occurs on this port. So we must wait until it is complete. The
955 * order of opens and closes may not be preserved across shared
956 * memory, so we must wait until it is complete.
958 wait_event_interruptible(portp
->raw_wait
,
959 !test_bit(ST_CLOSING
, &portp
->state
));
960 if (signal_pending(current
)) {
965 * Everything is ready now, so write the open message into shared
966 * memory. Once the message is in set the service bits to say that
967 * this port wants service.
969 spin_lock_irqsave(&brd_lock
, flags
);
971 cp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->ctrl
;
972 writel(arg
, &cp
->openarg
);
973 writeb(1, &cp
->open
);
974 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
975 bits
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
+
977 writeb(readb(bits
) | portp
->portbit
, bits
);
981 spin_unlock_irqrestore(&brd_lock
, flags
);
986 * Slave is in action, so now we must wait for the open acknowledgment
990 set_bit(ST_OPENING
, &portp
->state
);
991 spin_unlock_irqrestore(&brd_lock
, flags
);
993 wait_event_interruptible(portp
->raw_wait
,
994 !test_bit(ST_OPENING
, &portp
->state
));
995 if (signal_pending(current
))
998 if ((rc
== 0) && (portp
->rc
!= 0))
1003 /*****************************************************************************/
1006 * Send a close message to the slave. Normally this will sleep waiting
1007 * for the acknowledgement, but if wait parameter is 0 it will not. If
1008 * wait is true then must have user context (to sleep).
1011 static int stli_rawclose(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long arg
, int wait
)
1013 cdkhdr_t __iomem
*hdrp
;
1014 cdkctrl_t __iomem
*cp
;
1015 unsigned char __iomem
*bits
;
1016 unsigned long flags
;
1020 * Slave is already closing this port. This can happen if a hangup
1021 * occurs on this port.
1024 wait_event_interruptible(portp
->raw_wait
,
1025 !test_bit(ST_CLOSING
, &portp
->state
));
1026 if (signal_pending(current
)) {
1027 return -ERESTARTSYS
;
1032 * Write the close command into shared memory.
1034 spin_lock_irqsave(&brd_lock
, flags
);
1036 cp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->ctrl
;
1037 writel(arg
, &cp
->closearg
);
1038 writeb(1, &cp
->close
);
1039 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1040 bits
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
+
1042 writeb(readb(bits
) |portp
->portbit
, bits
);
1045 set_bit(ST_CLOSING
, &portp
->state
);
1046 spin_unlock_irqrestore(&brd_lock
, flags
);
1052 * Slave is in action, so now we must wait for the open acknowledgment
1056 wait_event_interruptible(portp
->raw_wait
,
1057 !test_bit(ST_CLOSING
, &portp
->state
));
1058 if (signal_pending(current
))
1061 if ((rc
== 0) && (portp
->rc
!= 0))
1066 /*****************************************************************************/
1069 * Send a command to the slave and wait for the response. This must
1070 * have user context (it sleeps). This routine is generic in that it
1071 * can send any type of command. Its purpose is to wait for that command
1072 * to complete (as opposed to initiating the command then returning).
1075 static int stli_cmdwait(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
)
1077 wait_event_interruptible(portp
->raw_wait
,
1078 !test_bit(ST_CMDING
, &portp
->state
));
1079 if (signal_pending(current
))
1080 return -ERESTARTSYS
;
1082 stli_sendcmd(brdp
, portp
, cmd
, arg
, size
, copyback
);
1084 wait_event_interruptible(portp
->raw_wait
,
1085 !test_bit(ST_CMDING
, &portp
->state
));
1086 if (signal_pending(current
))
1087 return -ERESTARTSYS
;
1094 /*****************************************************************************/
1097 * Send the termios settings for this port to the slave. This sleeps
1098 * waiting for the command to complete - so must have user context.
1101 static int stli_setport(struct tty_struct
*tty
)
1103 struct stliport
*portp
= tty
->driver_data
;
1104 struct stlibrd
*brdp
;
1109 if (portp
->brdnr
>= stli_nrbrds
)
1111 brdp
= stli_brds
[portp
->brdnr
];
1115 stli_mkasyport(tty
, portp
, &aport
, tty
->termios
);
1116 return(stli_cmdwait(brdp
, portp
, A_SETPORT
, &aport
, sizeof(asyport_t
), 0));
1119 /*****************************************************************************/
1121 static int stli_carrier_raised(struct tty_port
*port
)
1123 struct stliport
*portp
= container_of(port
, struct stliport
, port
);
1124 return (portp
->sigs
& TIOCM_CD
) ? 1 : 0;
1127 static void stli_dtr_rts(struct tty_port
*port
, int on
)
1129 struct stliport
*portp
= container_of(port
, struct stliport
, port
);
1130 struct stlibrd
*brdp
= stli_brds
[portp
->brdnr
];
1131 stli_mkasysigs(&portp
->asig
, on
, on
);
1132 if (stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
1133 sizeof(asysigs_t
), 0) < 0)
1134 printk(KERN_WARNING
"istallion: dtr set failed.\n");
1138 /*****************************************************************************/
1141 * Write routine. Take the data and put it in the shared memory ring
1142 * queue. If port is not already sending chars then need to mark the
1143 * service bits for this port.
1146 static int stli_write(struct tty_struct
*tty
, const unsigned char *buf
, int count
)
1148 cdkasy_t __iomem
*ap
;
1149 cdkhdr_t __iomem
*hdrp
;
1150 unsigned char __iomem
*bits
;
1151 unsigned char __iomem
*shbuf
;
1152 unsigned char *chbuf
;
1153 struct stliport
*portp
;
1154 struct stlibrd
*brdp
;
1155 unsigned int len
, stlen
, head
, tail
, size
;
1156 unsigned long flags
;
1158 if (tty
== stli_txcooktty
)
1159 stli_flushchars(tty
);
1160 portp
= tty
->driver_data
;
1163 if (portp
->brdnr
>= stli_nrbrds
)
1165 brdp
= stli_brds
[portp
->brdnr
];
1168 chbuf
= (unsigned char *) buf
;
1171 * All data is now local, shove as much as possible into shared memory.
1173 spin_lock_irqsave(&brd_lock
, flags
);
1175 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1176 head
= (unsigned int) readw(&ap
->txq
.head
);
1177 tail
= (unsigned int) readw(&ap
->txq
.tail
);
1178 if (tail
!= ((unsigned int) readw(&ap
->txq
.tail
)))
1179 tail
= (unsigned int) readw(&ap
->txq
.tail
);
1180 size
= portp
->txsize
;
1182 len
= size
- (head
- tail
) - 1;
1183 stlen
= size
- head
;
1185 len
= tail
- head
- 1;
1189 len
= min(len
, (unsigned int)count
);
1191 shbuf
= (char __iomem
*) EBRDGETMEMPTR(brdp
, portp
->txoffset
);
1194 stlen
= min(len
, stlen
);
1195 memcpy_toio(shbuf
+ head
, chbuf
, stlen
);
1206 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1207 writew(head
, &ap
->txq
.head
);
1208 if (test_bit(ST_TXBUSY
, &portp
->state
)) {
1209 if (readl(&ap
->changed
.data
) & DT_TXEMPTY
)
1210 writel(readl(&ap
->changed
.data
) & ~DT_TXEMPTY
, &ap
->changed
.data
);
1212 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1213 bits
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
+
1215 writeb(readb(bits
) | portp
->portbit
, bits
);
1216 set_bit(ST_TXBUSY
, &portp
->state
);
1218 spin_unlock_irqrestore(&brd_lock
, flags
);
1223 /*****************************************************************************/
1226 * Output a single character. We put it into a temporary local buffer
1227 * (for speed) then write out that buffer when the flushchars routine
1228 * is called. There is a safety catch here so that if some other port
1229 * writes chars before the current buffer has been, then we write them
1230 * first them do the new ports.
1233 static int stli_putchar(struct tty_struct
*tty
, unsigned char ch
)
1235 if (tty
!= stli_txcooktty
) {
1236 if (stli_txcooktty
!= NULL
)
1237 stli_flushchars(stli_txcooktty
);
1238 stli_txcooktty
= tty
;
1241 stli_txcookbuf
[stli_txcooksize
++] = ch
;
1245 /*****************************************************************************/
1248 * Transfer characters from the local TX cooking buffer to the board.
1249 * We sort of ignore the tty that gets passed in here. We rely on the
1250 * info stored with the TX cook buffer to tell us which port to flush
1251 * the data on. In any case we clean out the TX cook buffer, for re-use
1255 static void stli_flushchars(struct tty_struct
*tty
)
1257 cdkhdr_t __iomem
*hdrp
;
1258 unsigned char __iomem
*bits
;
1259 cdkasy_t __iomem
*ap
;
1260 struct tty_struct
*cooktty
;
1261 struct stliport
*portp
;
1262 struct stlibrd
*brdp
;
1263 unsigned int len
, stlen
, head
, tail
, size
, count
, cooksize
;
1265 unsigned char __iomem
*shbuf
;
1266 unsigned long flags
;
1268 cooksize
= stli_txcooksize
;
1269 cooktty
= stli_txcooktty
;
1270 stli_txcooksize
= 0;
1271 stli_txcookrealsize
= 0;
1272 stli_txcooktty
= NULL
;
1274 if (cooktty
== NULL
)
1281 portp
= tty
->driver_data
;
1284 if (portp
->brdnr
>= stli_nrbrds
)
1286 brdp
= stli_brds
[portp
->brdnr
];
1290 spin_lock_irqsave(&brd_lock
, flags
);
1293 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1294 head
= (unsigned int) readw(&ap
->txq
.head
);
1295 tail
= (unsigned int) readw(&ap
->txq
.tail
);
1296 if (tail
!= ((unsigned int) readw(&ap
->txq
.tail
)))
1297 tail
= (unsigned int) readw(&ap
->txq
.tail
);
1298 size
= portp
->txsize
;
1300 len
= size
- (head
- tail
) - 1;
1301 stlen
= size
- head
;
1303 len
= tail
- head
- 1;
1307 len
= min(len
, cooksize
);
1309 shbuf
= EBRDGETMEMPTR(brdp
, portp
->txoffset
);
1310 buf
= stli_txcookbuf
;
1313 stlen
= min(len
, stlen
);
1314 memcpy_toio(shbuf
+ head
, buf
, stlen
);
1325 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1326 writew(head
, &ap
->txq
.head
);
1328 if (test_bit(ST_TXBUSY
, &portp
->state
)) {
1329 if (readl(&ap
->changed
.data
) & DT_TXEMPTY
)
1330 writel(readl(&ap
->changed
.data
) & ~DT_TXEMPTY
, &ap
->changed
.data
);
1332 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1333 bits
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
+
1335 writeb(readb(bits
) | portp
->portbit
, bits
);
1336 set_bit(ST_TXBUSY
, &portp
->state
);
1339 spin_unlock_irqrestore(&brd_lock
, flags
);
1342 /*****************************************************************************/
1344 static int stli_writeroom(struct tty_struct
*tty
)
1346 cdkasyrq_t __iomem
*rp
;
1347 struct stliport
*portp
;
1348 struct stlibrd
*brdp
;
1349 unsigned int head
, tail
, len
;
1350 unsigned long flags
;
1352 if (tty
== stli_txcooktty
) {
1353 if (stli_txcookrealsize
!= 0) {
1354 len
= stli_txcookrealsize
- stli_txcooksize
;
1359 portp
= tty
->driver_data
;
1362 if (portp
->brdnr
>= stli_nrbrds
)
1364 brdp
= stli_brds
[portp
->brdnr
];
1368 spin_lock_irqsave(&brd_lock
, flags
);
1370 rp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->txq
;
1371 head
= (unsigned int) readw(&rp
->head
);
1372 tail
= (unsigned int) readw(&rp
->tail
);
1373 if (tail
!= ((unsigned int) readw(&rp
->tail
)))
1374 tail
= (unsigned int) readw(&rp
->tail
);
1375 len
= (head
>= tail
) ? (portp
->txsize
- (head
- tail
)) : (tail
- head
);
1378 spin_unlock_irqrestore(&brd_lock
, flags
);
1380 if (tty
== stli_txcooktty
) {
1381 stli_txcookrealsize
= len
;
1382 len
-= stli_txcooksize
;
1387 /*****************************************************************************/
1390 * Return the number of characters in the transmit buffer. Normally we
1391 * will return the number of chars in the shared memory ring queue.
1392 * We need to kludge around the case where the shared memory buffer is
1393 * empty but not all characters have drained yet, for this case just
1394 * return that there is 1 character in the buffer!
1397 static int stli_charsinbuffer(struct tty_struct
*tty
)
1399 cdkasyrq_t __iomem
*rp
;
1400 struct stliport
*portp
;
1401 struct stlibrd
*brdp
;
1402 unsigned int head
, tail
, len
;
1403 unsigned long flags
;
1405 if (tty
== stli_txcooktty
)
1406 stli_flushchars(tty
);
1407 portp
= tty
->driver_data
;
1410 if (portp
->brdnr
>= stli_nrbrds
)
1412 brdp
= stli_brds
[portp
->brdnr
];
1416 spin_lock_irqsave(&brd_lock
, flags
);
1418 rp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->txq
;
1419 head
= (unsigned int) readw(&rp
->head
);
1420 tail
= (unsigned int) readw(&rp
->tail
);
1421 if (tail
!= ((unsigned int) readw(&rp
->tail
)))
1422 tail
= (unsigned int) readw(&rp
->tail
);
1423 len
= (head
>= tail
) ? (head
- tail
) : (portp
->txsize
- (tail
- head
));
1424 if ((len
== 0) && test_bit(ST_TXBUSY
, &portp
->state
))
1427 spin_unlock_irqrestore(&brd_lock
, flags
);
1432 /*****************************************************************************/
1435 * Generate the serial struct info.
1438 static int stli_getserial(struct stliport
*portp
, struct serial_struct __user
*sp
)
1440 struct serial_struct sio
;
1441 struct stlibrd
*brdp
;
1443 memset(&sio
, 0, sizeof(struct serial_struct
));
1444 sio
.type
= PORT_UNKNOWN
;
1445 sio
.line
= portp
->portnr
;
1447 sio
.flags
= portp
->port
.flags
;
1448 sio
.baud_base
= portp
->baud_base
;
1449 sio
.close_delay
= portp
->port
.close_delay
;
1450 sio
.closing_wait
= portp
->closing_wait
;
1451 sio
.custom_divisor
= portp
->custom_divisor
;
1452 sio
.xmit_fifo_size
= 0;
1455 brdp
= stli_brds
[portp
->brdnr
];
1457 sio
.port
= brdp
->iobase
;
1459 return copy_to_user(sp
, &sio
, sizeof(struct serial_struct
)) ?
1463 /*****************************************************************************/
1466 * Set port according to the serial struct info.
1467 * At this point we do not do any auto-configure stuff, so we will
1468 * just quietly ignore any requests to change irq, etc.
1471 static int stli_setserial(struct tty_struct
*tty
, struct serial_struct __user
*sp
)
1473 struct serial_struct sio
;
1475 struct stliport
*portp
= tty
->driver_data
;
1477 if (copy_from_user(&sio
, sp
, sizeof(struct serial_struct
)))
1479 if (!capable(CAP_SYS_ADMIN
)) {
1480 if ((sio
.baud_base
!= portp
->baud_base
) ||
1481 (sio
.close_delay
!= portp
->port
.close_delay
) ||
1482 ((sio
.flags
& ~ASYNC_USR_MASK
) !=
1483 (portp
->port
.flags
& ~ASYNC_USR_MASK
)))
1487 portp
->port
.flags
= (portp
->port
.flags
& ~ASYNC_USR_MASK
) |
1488 (sio
.flags
& ASYNC_USR_MASK
);
1489 portp
->baud_base
= sio
.baud_base
;
1490 portp
->port
.close_delay
= sio
.close_delay
;
1491 portp
->closing_wait
= sio
.closing_wait
;
1492 portp
->custom_divisor
= sio
.custom_divisor
;
1494 if ((rc
= stli_setport(tty
)) < 0)
1499 /*****************************************************************************/
1501 static int stli_tiocmget(struct tty_struct
*tty
, struct file
*file
)
1503 struct stliport
*portp
= tty
->driver_data
;
1504 struct stlibrd
*brdp
;
1509 if (portp
->brdnr
>= stli_nrbrds
)
1511 brdp
= stli_brds
[portp
->brdnr
];
1514 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1517 if ((rc
= stli_cmdwait(brdp
, portp
, A_GETSIGNALS
,
1518 &portp
->asig
, sizeof(asysigs_t
), 1)) < 0)
1521 return stli_mktiocm(portp
->asig
.sigvalue
);
1524 static int stli_tiocmset(struct tty_struct
*tty
, struct file
*file
,
1525 unsigned int set
, unsigned int clear
)
1527 struct stliport
*portp
= tty
->driver_data
;
1528 struct stlibrd
*brdp
;
1529 int rts
= -1, dtr
= -1;
1533 if (portp
->brdnr
>= stli_nrbrds
)
1535 brdp
= stli_brds
[portp
->brdnr
];
1538 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1541 if (set
& TIOCM_RTS
)
1543 if (set
& TIOCM_DTR
)
1545 if (clear
& TIOCM_RTS
)
1547 if (clear
& TIOCM_DTR
)
1550 stli_mkasysigs(&portp
->asig
, dtr
, rts
);
1552 return stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
1553 sizeof(asysigs_t
), 0);
1556 static int stli_ioctl(struct tty_struct
*tty
, struct file
*file
, unsigned int cmd
, unsigned long arg
)
1558 struct stliport
*portp
;
1559 struct stlibrd
*brdp
;
1561 void __user
*argp
= (void __user
*)arg
;
1563 portp
= tty
->driver_data
;
1566 if (portp
->brdnr
>= stli_nrbrds
)
1568 brdp
= stli_brds
[portp
->brdnr
];
1572 if ((cmd
!= TIOCGSERIAL
) && (cmd
!= TIOCSSERIAL
) &&
1573 (cmd
!= COM_GETPORTSTATS
) && (cmd
!= COM_CLRPORTSTATS
)) {
1574 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1582 rc
= stli_getserial(portp
, argp
);
1585 rc
= stli_setserial(tty
, argp
);
1588 rc
= put_user(portp
->pflag
, (unsigned __user
*)argp
);
1591 if ((rc
= get_user(portp
->pflag
, (unsigned __user
*)argp
)) == 0)
1594 case COM_GETPORTSTATS
:
1595 rc
= stli_getportstats(tty
, portp
, argp
);
1597 case COM_CLRPORTSTATS
:
1598 rc
= stli_clrportstats(portp
, argp
);
1604 case TIOCSERGSTRUCT
:
1605 case TIOCSERGETMULTI
:
1606 case TIOCSERSETMULTI
:
1615 /*****************************************************************************/
1618 * This routine assumes that we have user context and can sleep.
1619 * Looks like it is true for the current ttys implementation..!!
1622 static void stli_settermios(struct tty_struct
*tty
, struct ktermios
*old
)
1624 struct stliport
*portp
;
1625 struct stlibrd
*brdp
;
1626 struct ktermios
*tiosp
;
1629 portp
= tty
->driver_data
;
1632 if (portp
->brdnr
>= stli_nrbrds
)
1634 brdp
= stli_brds
[portp
->brdnr
];
1638 tiosp
= tty
->termios
;
1640 stli_mkasyport(tty
, portp
, &aport
, tiosp
);
1641 stli_cmdwait(brdp
, portp
, A_SETPORT
, &aport
, sizeof(asyport_t
), 0);
1642 stli_mkasysigs(&portp
->asig
, ((tiosp
->c_cflag
& CBAUD
) ? 1 : 0), -1);
1643 stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
1644 sizeof(asysigs_t
), 0);
1645 if ((old
->c_cflag
& CRTSCTS
) && ((tiosp
->c_cflag
& CRTSCTS
) == 0))
1646 tty
->hw_stopped
= 0;
1647 if (((old
->c_cflag
& CLOCAL
) == 0) && (tiosp
->c_cflag
& CLOCAL
))
1648 wake_up_interruptible(&portp
->port
.open_wait
);
1651 /*****************************************************************************/
1654 * Attempt to flow control who ever is sending us data. We won't really
1655 * do any flow control action here. We can't directly, and even if we
1656 * wanted to we would have to send a command to the slave. The slave
1657 * knows how to flow control, and will do so when its buffers reach its
1658 * internal high water marks. So what we will do is set a local state
1659 * bit that will stop us sending any RX data up from the poll routine
1660 * (which is the place where RX data from the slave is handled).
1663 static void stli_throttle(struct tty_struct
*tty
)
1665 struct stliport
*portp
= tty
->driver_data
;
1668 set_bit(ST_RXSTOP
, &portp
->state
);
1671 /*****************************************************************************/
1674 * Unflow control the device sending us data... That means that all
1675 * we have to do is clear the RXSTOP state bit. The next poll call
1676 * will then be able to pass the RX data back up.
1679 static void stli_unthrottle(struct tty_struct
*tty
)
1681 struct stliport
*portp
= tty
->driver_data
;
1684 clear_bit(ST_RXSTOP
, &portp
->state
);
1687 /*****************************************************************************/
1690 * Stop the transmitter.
1693 static void stli_stop(struct tty_struct
*tty
)
1697 /*****************************************************************************/
1700 * Start the transmitter again.
1703 static void stli_start(struct tty_struct
*tty
)
1707 /*****************************************************************************/
1711 * Hangup this port. This is pretty much like closing the port, only
1712 * a little more brutal. No waiting for data to drain. Shutdown the
1713 * port and maybe drop signals. This is rather tricky really. We want
1714 * to close the port as well.
1717 static void stli_hangup(struct tty_struct
*tty
)
1719 struct stliport
*portp
= tty
->driver_data
;
1720 tty_port_hangup(&portp
->port
);
1723 /*****************************************************************************/
1726 * Flush characters from the lower buffer. We may not have user context
1727 * so we cannot sleep waiting for it to complete. Also we need to check
1728 * if there is chars for this port in the TX cook buffer, and flush them
1732 static void stli_flushbuffer(struct tty_struct
*tty
)
1734 struct stliport
*portp
;
1735 struct stlibrd
*brdp
;
1736 unsigned long ftype
, flags
;
1738 portp
= tty
->driver_data
;
1741 if (portp
->brdnr
>= stli_nrbrds
)
1743 brdp
= stli_brds
[portp
->brdnr
];
1747 spin_lock_irqsave(&brd_lock
, flags
);
1748 if (tty
== stli_txcooktty
) {
1749 stli_txcooktty
= NULL
;
1750 stli_txcooksize
= 0;
1751 stli_txcookrealsize
= 0;
1753 if (test_bit(ST_CMDING
, &portp
->state
)) {
1754 set_bit(ST_DOFLUSHTX
, &portp
->state
);
1757 if (test_bit(ST_DOFLUSHRX
, &portp
->state
)) {
1759 clear_bit(ST_DOFLUSHRX
, &portp
->state
);
1761 __stli_sendcmd(brdp
, portp
, A_FLUSH
, &ftype
, sizeof(u32
), 0);
1763 spin_unlock_irqrestore(&brd_lock
, flags
);
1767 /*****************************************************************************/
1769 static int stli_breakctl(struct tty_struct
*tty
, int state
)
1771 struct stlibrd
*brdp
;
1772 struct stliport
*portp
;
1775 portp
= tty
->driver_data
;
1778 if (portp
->brdnr
>= stli_nrbrds
)
1780 brdp
= stli_brds
[portp
->brdnr
];
1784 arg
= (state
== -1) ? BREAKON
: BREAKOFF
;
1785 stli_cmdwait(brdp
, portp
, A_BREAK
, &arg
, sizeof(long), 0);
1789 /*****************************************************************************/
1791 static void stli_waituntilsent(struct tty_struct
*tty
, int timeout
)
1793 struct stliport
*portp
;
1796 portp
= tty
->driver_data
;
1802 tend
= jiffies
+ timeout
;
1804 while (test_bit(ST_TXBUSY
, &portp
->state
)) {
1805 if (signal_pending(current
))
1807 msleep_interruptible(20);
1808 if (time_after_eq(jiffies
, tend
))
1813 /*****************************************************************************/
1815 static void stli_sendxchar(struct tty_struct
*tty
, char ch
)
1817 struct stlibrd
*brdp
;
1818 struct stliport
*portp
;
1821 portp
= tty
->driver_data
;
1824 if (portp
->brdnr
>= stli_nrbrds
)
1826 brdp
= stli_brds
[portp
->brdnr
];
1830 memset(&actrl
, 0, sizeof(asyctrl_t
));
1831 if (ch
== STOP_CHAR(tty
)) {
1832 actrl
.rxctrl
= CT_STOPFLOW
;
1833 } else if (ch
== START_CHAR(tty
)) {
1834 actrl
.rxctrl
= CT_STARTFLOW
;
1836 actrl
.txctrl
= CT_SENDCHR
;
1839 stli_cmdwait(brdp
, portp
, A_PORTCTRL
, &actrl
, sizeof(asyctrl_t
), 0);
1842 static void stli_portinfo(struct seq_file
*m
, struct stlibrd
*brdp
, struct stliport
*portp
, int portnr
)
1847 rc
= stli_portcmdstats(NULL
, portp
);
1850 if (brdp
->state
& BST_STARTED
) {
1851 switch (stli_comstats
.hwid
) {
1852 case 0: uart
= "2681"; break;
1853 case 1: uart
= "SC26198"; break;
1854 default:uart
= "CD1400"; break;
1857 seq_printf(m
, "%d: uart:%s ", portnr
, uart
);
1859 if ((brdp
->state
& BST_STARTED
) && (rc
>= 0)) {
1862 seq_printf(m
, "tx:%d rx:%d", (int) stli_comstats
.txtotal
,
1863 (int) stli_comstats
.rxtotal
);
1865 if (stli_comstats
.rxframing
)
1866 seq_printf(m
, " fe:%d",
1867 (int) stli_comstats
.rxframing
);
1868 if (stli_comstats
.rxparity
)
1869 seq_printf(m
, " pe:%d",
1870 (int) stli_comstats
.rxparity
);
1871 if (stli_comstats
.rxbreaks
)
1872 seq_printf(m
, " brk:%d",
1873 (int) stli_comstats
.rxbreaks
);
1874 if (stli_comstats
.rxoverrun
)
1875 seq_printf(m
, " oe:%d",
1876 (int) stli_comstats
.rxoverrun
);
1879 if (stli_comstats
.signals
& TIOCM_RTS
) {
1880 seq_printf(m
, "%c%s", sep
, "RTS");
1883 if (stli_comstats
.signals
& TIOCM_CTS
) {
1884 seq_printf(m
, "%c%s", sep
, "CTS");
1887 if (stli_comstats
.signals
& TIOCM_DTR
) {
1888 seq_printf(m
, "%c%s", sep
, "DTR");
1891 if (stli_comstats
.signals
& TIOCM_CD
) {
1892 seq_printf(m
, "%c%s", sep
, "DCD");
1895 if (stli_comstats
.signals
& TIOCM_DSR
) {
1896 seq_printf(m
, "%c%s", sep
, "DSR");
1903 /*****************************************************************************/
1906 * Port info, read from the /proc file system.
1909 static int stli_proc_show(struct seq_file
*m
, void *v
)
1911 struct stlibrd
*brdp
;
1912 struct stliport
*portp
;
1913 unsigned int brdnr
, portnr
, totalport
;
1917 seq_printf(m
, "%s: version %s\n", stli_drvtitle
, stli_drvversion
);
1920 * We scan through for each board, panel and port. The offset is
1921 * calculated on the fly, and irrelevant ports are skipped.
1923 for (brdnr
= 0; (brdnr
< stli_nrbrds
); brdnr
++) {
1924 brdp
= stli_brds
[brdnr
];
1927 if (brdp
->state
== 0)
1930 totalport
= brdnr
* STL_MAXPORTS
;
1931 for (portnr
= 0; (portnr
< brdp
->nrports
); portnr
++,
1933 portp
= brdp
->ports
[portnr
];
1936 stli_portinfo(m
, brdp
, portp
, totalport
);
1942 static int stli_proc_open(struct inode
*inode
, struct file
*file
)
1944 return single_open(file
, stli_proc_show
, NULL
);
1947 static const struct file_operations stli_proc_fops
= {
1948 .owner
= THIS_MODULE
,
1949 .open
= stli_proc_open
,
1951 .llseek
= seq_lseek
,
1952 .release
= single_release
,
1955 /*****************************************************************************/
1958 * Generic send command routine. This will send a message to the slave,
1959 * of the specified type with the specified argument. Must be very
1960 * careful of data that will be copied out from shared memory -
1961 * containing command results. The command completion is all done from
1962 * a poll routine that does not have user context. Therefore you cannot
1963 * copy back directly into user space, or to the kernel stack of a
1964 * process. This routine does not sleep, so can be called from anywhere.
1966 * The caller must hold the brd_lock (see also stli_sendcmd the usual
1970 static void __stli_sendcmd(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
)
1972 cdkhdr_t __iomem
*hdrp
;
1973 cdkctrl_t __iomem
*cp
;
1974 unsigned char __iomem
*bits
;
1976 if (test_bit(ST_CMDING
, &portp
->state
)) {
1977 printk(KERN_ERR
"istallion: command already busy, cmd=%x!\n",
1983 cp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->ctrl
;
1985 memcpy_toio((void __iomem
*) &(cp
->args
[0]), arg
, size
);
1988 portp
->argsize
= size
;
1991 writel(0, &cp
->status
);
1992 writel(cmd
, &cp
->cmd
);
1993 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1994 bits
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
+
1996 writeb(readb(bits
) | portp
->portbit
, bits
);
1997 set_bit(ST_CMDING
, &portp
->state
);
2001 static void stli_sendcmd(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
)
2003 unsigned long flags
;
2005 spin_lock_irqsave(&brd_lock
, flags
);
2006 __stli_sendcmd(brdp
, portp
, cmd
, arg
, size
, copyback
);
2007 spin_unlock_irqrestore(&brd_lock
, flags
);
2010 /*****************************************************************************/
2013 * Read data from shared memory. This assumes that the shared memory
2014 * is enabled and that interrupts are off. Basically we just empty out
2015 * the shared memory buffer into the tty buffer. Must be careful to
2016 * handle the case where we fill up the tty buffer, but still have
2017 * more chars to unload.
2020 static void stli_read(struct stlibrd
*brdp
, struct stliport
*portp
)
2022 cdkasyrq_t __iomem
*rp
;
2023 char __iomem
*shbuf
;
2024 struct tty_struct
*tty
;
2025 unsigned int head
, tail
, size
;
2026 unsigned int len
, stlen
;
2028 if (test_bit(ST_RXSTOP
, &portp
->state
))
2030 tty
= tty_port_tty_get(&portp
->port
);
2034 rp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->rxq
;
2035 head
= (unsigned int) readw(&rp
->head
);
2036 if (head
!= ((unsigned int) readw(&rp
->head
)))
2037 head
= (unsigned int) readw(&rp
->head
);
2038 tail
= (unsigned int) readw(&rp
->tail
);
2039 size
= portp
->rxsize
;
2044 len
= size
- (tail
- head
);
2045 stlen
= size
- tail
;
2048 len
= tty_buffer_request_room(tty
, len
);
2050 shbuf
= (char __iomem
*) EBRDGETMEMPTR(brdp
, portp
->rxoffset
);
2053 unsigned char *cptr
;
2055 stlen
= min(len
, stlen
);
2056 tty_prepare_flip_string(tty
, &cptr
, stlen
);
2057 memcpy_fromio(cptr
, shbuf
+ tail
, stlen
);
2065 rp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->rxq
;
2066 writew(tail
, &rp
->tail
);
2069 set_bit(ST_RXING
, &portp
->state
);
2071 tty_schedule_flip(tty
);
2075 /*****************************************************************************/
2078 * Set up and carry out any delayed commands. There is only a small set
2079 * of slave commands that can be done "off-level". So it is not too
2080 * difficult to deal with them here.
2083 static void stli_dodelaycmd(struct stliport
*portp
, cdkctrl_t __iomem
*cp
)
2087 if (test_bit(ST_DOSIGS
, &portp
->state
)) {
2088 if (test_bit(ST_DOFLUSHTX
, &portp
->state
) &&
2089 test_bit(ST_DOFLUSHRX
, &portp
->state
))
2090 cmd
= A_SETSIGNALSF
;
2091 else if (test_bit(ST_DOFLUSHTX
, &portp
->state
))
2092 cmd
= A_SETSIGNALSFTX
;
2093 else if (test_bit(ST_DOFLUSHRX
, &portp
->state
))
2094 cmd
= A_SETSIGNALSFRX
;
2097 clear_bit(ST_DOFLUSHTX
, &portp
->state
);
2098 clear_bit(ST_DOFLUSHRX
, &portp
->state
);
2099 clear_bit(ST_DOSIGS
, &portp
->state
);
2100 memcpy_toio((void __iomem
*) &(cp
->args
[0]), (void *) &portp
->asig
,
2102 writel(0, &cp
->status
);
2103 writel(cmd
, &cp
->cmd
);
2104 set_bit(ST_CMDING
, &portp
->state
);
2105 } else if (test_bit(ST_DOFLUSHTX
, &portp
->state
) ||
2106 test_bit(ST_DOFLUSHRX
, &portp
->state
)) {
2107 cmd
= ((test_bit(ST_DOFLUSHTX
, &portp
->state
)) ? FLUSHTX
: 0);
2108 cmd
|= ((test_bit(ST_DOFLUSHRX
, &portp
->state
)) ? FLUSHRX
: 0);
2109 clear_bit(ST_DOFLUSHTX
, &portp
->state
);
2110 clear_bit(ST_DOFLUSHRX
, &portp
->state
);
2111 memcpy_toio((void __iomem
*) &(cp
->args
[0]), (void *) &cmd
, sizeof(int));
2112 writel(0, &cp
->status
);
2113 writel(A_FLUSH
, &cp
->cmd
);
2114 set_bit(ST_CMDING
, &portp
->state
);
2118 /*****************************************************************************/
2121 * Host command service checking. This handles commands or messages
2122 * coming from the slave to the host. Must have board shared memory
2123 * enabled and interrupts off when called. Notice that by servicing the
2124 * read data last we don't need to change the shared memory pointer
2125 * during processing (which is a slow IO operation).
2126 * Return value indicates if this port is still awaiting actions from
2127 * the slave (like open, command, or even TX data being sent). If 0
2128 * then port is still busy, otherwise no longer busy.
2131 static int stli_hostcmd(struct stlibrd
*brdp
, struct stliport
*portp
)
2133 cdkasy_t __iomem
*ap
;
2134 cdkctrl_t __iomem
*cp
;
2135 struct tty_struct
*tty
;
2137 unsigned long oldsigs
;
2140 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
2144 * Check if we are waiting for an open completion message.
2146 if (test_bit(ST_OPENING
, &portp
->state
)) {
2147 rc
= readl(&cp
->openarg
);
2148 if (readb(&cp
->open
) == 0 && rc
!= 0) {
2151 writel(0, &cp
->openarg
);
2153 clear_bit(ST_OPENING
, &portp
->state
);
2154 wake_up_interruptible(&portp
->raw_wait
);
2159 * Check if we are waiting for a close completion message.
2161 if (test_bit(ST_CLOSING
, &portp
->state
)) {
2162 rc
= (int) readl(&cp
->closearg
);
2163 if (readb(&cp
->close
) == 0 && rc
!= 0) {
2166 writel(0, &cp
->closearg
);
2168 clear_bit(ST_CLOSING
, &portp
->state
);
2169 wake_up_interruptible(&portp
->raw_wait
);
2174 * Check if we are waiting for a command completion message. We may
2175 * need to copy out the command results associated with this command.
2177 if (test_bit(ST_CMDING
, &portp
->state
)) {
2178 rc
= readl(&cp
->status
);
2179 if (readl(&cp
->cmd
) == 0 && rc
!= 0) {
2182 if (portp
->argp
!= NULL
) {
2183 memcpy_fromio(portp
->argp
, (void __iomem
*) &(cp
->args
[0]),
2187 writel(0, &cp
->status
);
2189 clear_bit(ST_CMDING
, &portp
->state
);
2190 stli_dodelaycmd(portp
, cp
);
2191 wake_up_interruptible(&portp
->raw_wait
);
2196 * Check for any notification messages ready. This includes lots of
2197 * different types of events - RX chars ready, RX break received,
2198 * TX data low or empty in the slave, modem signals changed state.
2205 tty
= tty_port_tty_get(&portp
->port
);
2207 if (nt
.signal
& SG_DCD
) {
2208 oldsigs
= portp
->sigs
;
2209 portp
->sigs
= stli_mktiocm(nt
.sigvalue
);
2210 clear_bit(ST_GETSIGS
, &portp
->state
);
2211 if ((portp
->sigs
& TIOCM_CD
) &&
2212 ((oldsigs
& TIOCM_CD
) == 0))
2213 wake_up_interruptible(&portp
->port
.open_wait
);
2214 if ((oldsigs
& TIOCM_CD
) &&
2215 ((portp
->sigs
& TIOCM_CD
) == 0)) {
2216 if (portp
->port
.flags
& ASYNC_CHECK_CD
) {
2223 if (nt
.data
& DT_TXEMPTY
)
2224 clear_bit(ST_TXBUSY
, &portp
->state
);
2225 if (nt
.data
& (DT_TXEMPTY
| DT_TXLOW
)) {
2232 if ((nt
.data
& DT_RXBREAK
) && (portp
->rxmarkmsk
& BRKINT
)) {
2234 tty_insert_flip_char(tty
, 0, TTY_BREAK
);
2235 if (portp
->port
.flags
& ASYNC_SAK
) {
2239 tty_schedule_flip(tty
);
2244 if (nt
.data
& DT_RXBUSY
) {
2246 stli_read(brdp
, portp
);
2251 * It might seem odd that we are checking for more RX chars here.
2252 * But, we need to handle the case where the tty buffer was previously
2253 * filled, but we had more characters to pass up. The slave will not
2254 * send any more RX notify messages until the RX buffer has been emptied.
2255 * But it will leave the service bits on (since the buffer is not empty).
2256 * So from here we can try to process more RX chars.
2258 if ((!donerx
) && test_bit(ST_RXING
, &portp
->state
)) {
2259 clear_bit(ST_RXING
, &portp
->state
);
2260 stli_read(brdp
, portp
);
2263 return((test_bit(ST_OPENING
, &portp
->state
) ||
2264 test_bit(ST_CLOSING
, &portp
->state
) ||
2265 test_bit(ST_CMDING
, &portp
->state
) ||
2266 test_bit(ST_TXBUSY
, &portp
->state
) ||
2267 test_bit(ST_RXING
, &portp
->state
)) ? 0 : 1);
2270 /*****************************************************************************/
2273 * Service all ports on a particular board. Assumes that the boards
2274 * shared memory is enabled, and that the page pointer is pointed
2275 * at the cdk header structure.
2278 static void stli_brdpoll(struct stlibrd
*brdp
, cdkhdr_t __iomem
*hdrp
)
2280 struct stliport
*portp
;
2281 unsigned char hostbits
[(STL_MAXCHANS
/ 8) + 1];
2282 unsigned char slavebits
[(STL_MAXCHANS
/ 8) + 1];
2283 unsigned char __iomem
*slavep
;
2284 int bitpos
, bitat
, bitsize
;
2285 int channr
, nrdevs
, slavebitchange
;
2287 bitsize
= brdp
->bitsize
;
2288 nrdevs
= brdp
->nrdevs
;
2291 * Check if slave wants any service. Basically we try to do as
2292 * little work as possible here. There are 2 levels of service
2293 * bits. So if there is nothing to do we bail early. We check
2294 * 8 service bits at a time in the inner loop, so we can bypass
2295 * the lot if none of them want service.
2297 memcpy_fromio(&hostbits
[0], (((unsigned char __iomem
*) hdrp
) + brdp
->hostoffset
),
2300 memset(&slavebits
[0], 0, bitsize
);
2303 for (bitpos
= 0; (bitpos
< bitsize
); bitpos
++) {
2304 if (hostbits
[bitpos
] == 0)
2306 channr
= bitpos
* 8;
2307 for (bitat
= 0x1; (channr
< nrdevs
); channr
++, bitat
<<= 1) {
2308 if (hostbits
[bitpos
] & bitat
) {
2309 portp
= brdp
->ports
[(channr
- 1)];
2310 if (stli_hostcmd(brdp
, portp
)) {
2312 slavebits
[bitpos
] |= bitat
;
2319 * If any of the ports are no longer busy then update them in the
2320 * slave request bits. We need to do this after, since a host port
2321 * service may initiate more slave requests.
2323 if (slavebitchange
) {
2324 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
2325 slavep
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
;
2326 for (bitpos
= 0; (bitpos
< bitsize
); bitpos
++) {
2327 if (readb(slavebits
+ bitpos
))
2328 writeb(readb(slavep
+ bitpos
) & ~slavebits
[bitpos
], slavebits
+ bitpos
);
2333 /*****************************************************************************/
2336 * Driver poll routine. This routine polls the boards in use and passes
2337 * messages back up to host when necessary. This is actually very
2338 * CPU efficient, since we will always have the kernel poll clock, it
2339 * adds only a few cycles when idle (since board service can be
2340 * determined very easily), but when loaded generates no interrupts
2341 * (with their expensive associated context change).
2344 static void stli_poll(unsigned long arg
)
2346 cdkhdr_t __iomem
*hdrp
;
2347 struct stlibrd
*brdp
;
2350 mod_timer(&stli_timerlist
, STLI_TIMEOUT
);
2353 * Check each board and do any servicing required.
2355 for (brdnr
= 0; (brdnr
< stli_nrbrds
); brdnr
++) {
2356 brdp
= stli_brds
[brdnr
];
2359 if ((brdp
->state
& BST_STARTED
) == 0)
2362 spin_lock(&brd_lock
);
2364 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
2365 if (readb(&hdrp
->hostreq
))
2366 stli_brdpoll(brdp
, hdrp
);
2368 spin_unlock(&brd_lock
);
2372 /*****************************************************************************/
2375 * Translate the termios settings into the port setting structure of
2379 static void stli_mkasyport(struct tty_struct
*tty
, struct stliport
*portp
,
2380 asyport_t
*pp
, struct ktermios
*tiosp
)
2382 memset(pp
, 0, sizeof(asyport_t
));
2385 * Start of by setting the baud, char size, parity and stop bit info.
2387 pp
->baudout
= tty_get_baud_rate(tty
);
2388 if ((tiosp
->c_cflag
& CBAUD
) == B38400
) {
2389 if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_HI
)
2390 pp
->baudout
= 57600;
2391 else if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_VHI
)
2392 pp
->baudout
= 115200;
2393 else if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_SHI
)
2394 pp
->baudout
= 230400;
2395 else if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_WARP
)
2396 pp
->baudout
= 460800;
2397 else if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_CUST
)
2398 pp
->baudout
= (portp
->baud_base
/ portp
->custom_divisor
);
2400 if (pp
->baudout
> STL_MAXBAUD
)
2401 pp
->baudout
= STL_MAXBAUD
;
2402 pp
->baudin
= pp
->baudout
;
2404 switch (tiosp
->c_cflag
& CSIZE
) {
2419 if (tiosp
->c_cflag
& CSTOPB
)
2420 pp
->stopbs
= PT_STOP2
;
2422 pp
->stopbs
= PT_STOP1
;
2424 if (tiosp
->c_cflag
& PARENB
) {
2425 if (tiosp
->c_cflag
& PARODD
)
2426 pp
->parity
= PT_ODDPARITY
;
2428 pp
->parity
= PT_EVENPARITY
;
2430 pp
->parity
= PT_NOPARITY
;
2434 * Set up any flow control options enabled.
2436 if (tiosp
->c_iflag
& IXON
) {
2438 if (tiosp
->c_iflag
& IXANY
)
2439 pp
->flow
|= F_IXANY
;
2441 if (tiosp
->c_cflag
& CRTSCTS
)
2442 pp
->flow
|= (F_RTSFLOW
| F_CTSFLOW
);
2444 pp
->startin
= tiosp
->c_cc
[VSTART
];
2445 pp
->stopin
= tiosp
->c_cc
[VSTOP
];
2446 pp
->startout
= tiosp
->c_cc
[VSTART
];
2447 pp
->stopout
= tiosp
->c_cc
[VSTOP
];
2450 * Set up the RX char marking mask with those RX error types we must
2451 * catch. We can get the slave to help us out a little here, it will
2452 * ignore parity errors and breaks for us, and mark parity errors in
2455 if (tiosp
->c_iflag
& IGNPAR
)
2456 pp
->iflag
|= FI_IGNRXERRS
;
2457 if (tiosp
->c_iflag
& IGNBRK
)
2458 pp
->iflag
|= FI_IGNBREAK
;
2460 portp
->rxmarkmsk
= 0;
2461 if (tiosp
->c_iflag
& (INPCK
| PARMRK
))
2462 pp
->iflag
|= FI_1MARKRXERRS
;
2463 if (tiosp
->c_iflag
& BRKINT
)
2464 portp
->rxmarkmsk
|= BRKINT
;
2467 * Set up clocal processing as required.
2469 if (tiosp
->c_cflag
& CLOCAL
)
2470 portp
->port
.flags
&= ~ASYNC_CHECK_CD
;
2472 portp
->port
.flags
|= ASYNC_CHECK_CD
;
2475 * Transfer any persistent flags into the asyport structure.
2477 pp
->pflag
= (portp
->pflag
& 0xffff);
2478 pp
->vmin
= (portp
->pflag
& P_RXIMIN
) ? 1 : 0;
2479 pp
->vtime
= (portp
->pflag
& P_RXITIME
) ? 1 : 0;
2480 pp
->cc
[1] = (portp
->pflag
& P_RXTHOLD
) ? 1 : 0;
2483 /*****************************************************************************/
2486 * Construct a slave signals structure for setting the DTR and RTS
2487 * signals as specified.
2490 static void stli_mkasysigs(asysigs_t
*sp
, int dtr
, int rts
)
2492 memset(sp
, 0, sizeof(asysigs_t
));
2494 sp
->signal
|= SG_DTR
;
2495 sp
->sigvalue
|= ((dtr
> 0) ? SG_DTR
: 0);
2498 sp
->signal
|= SG_RTS
;
2499 sp
->sigvalue
|= ((rts
> 0) ? SG_RTS
: 0);
2503 /*****************************************************************************/
2506 * Convert the signals returned from the slave into a local TIOCM type
2507 * signals value. We keep them locally in TIOCM format.
2510 static long stli_mktiocm(unsigned long sigvalue
)
2513 tiocm
|= ((sigvalue
& SG_DCD
) ? TIOCM_CD
: 0);
2514 tiocm
|= ((sigvalue
& SG_CTS
) ? TIOCM_CTS
: 0);
2515 tiocm
|= ((sigvalue
& SG_RI
) ? TIOCM_RI
: 0);
2516 tiocm
|= ((sigvalue
& SG_DSR
) ? TIOCM_DSR
: 0);
2517 tiocm
|= ((sigvalue
& SG_DTR
) ? TIOCM_DTR
: 0);
2518 tiocm
|= ((sigvalue
& SG_RTS
) ? TIOCM_RTS
: 0);
2522 /*****************************************************************************/
2525 * All panels and ports actually attached have been worked out. All
2526 * we need to do here is set up the appropriate per port data structures.
2529 static int stli_initports(struct stlibrd
*brdp
)
2531 struct stliport
*portp
;
2532 unsigned int i
, panelnr
, panelport
;
2534 for (i
= 0, panelnr
= 0, panelport
= 0; (i
< brdp
->nrports
); i
++) {
2535 portp
= kzalloc(sizeof(struct stliport
), GFP_KERNEL
);
2537 printk(KERN_WARNING
"istallion: failed to allocate port structure\n");
2540 tty_port_init(&portp
->port
);
2541 portp
->port
.ops
= &stli_port_ops
;
2542 portp
->magic
= STLI_PORTMAGIC
;
2544 portp
->brdnr
= brdp
->brdnr
;
2545 portp
->panelnr
= panelnr
;
2546 portp
->baud_base
= STL_BAUDBASE
;
2547 portp
->port
.close_delay
= STL_CLOSEDELAY
;
2548 portp
->closing_wait
= 30 * HZ
;
2549 init_waitqueue_head(&portp
->port
.open_wait
);
2550 init_waitqueue_head(&portp
->port
.close_wait
);
2551 init_waitqueue_head(&portp
->raw_wait
);
2553 if (panelport
>= brdp
->panels
[panelnr
]) {
2557 brdp
->ports
[i
] = portp
;
2563 /*****************************************************************************/
2566 * All the following routines are board specific hardware operations.
2569 static void stli_ecpinit(struct stlibrd
*brdp
)
2571 unsigned long memconf
;
2573 outb(ECP_ATSTOP
, (brdp
->iobase
+ ECP_ATCONFR
));
2575 outb(ECP_ATDISABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
2578 memconf
= (brdp
->memaddr
& ECP_ATADDRMASK
) >> ECP_ATADDRSHFT
;
2579 outb(memconf
, (brdp
->iobase
+ ECP_ATMEMAR
));
2582 /*****************************************************************************/
2584 static void stli_ecpenable(struct stlibrd
*brdp
)
2586 outb(ECP_ATENABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
2589 /*****************************************************************************/
2591 static void stli_ecpdisable(struct stlibrd
*brdp
)
2593 outb(ECP_ATDISABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
2596 /*****************************************************************************/
2598 static void __iomem
*stli_ecpgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2603 if (offset
> brdp
->memsize
) {
2604 printk(KERN_ERR
"istallion: shared memory pointer=%x out of "
2605 "range at line=%d(%d), brd=%d\n",
2606 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
2610 ptr
= brdp
->membase
+ (offset
% ECP_ATPAGESIZE
);
2611 val
= (unsigned char) (offset
/ ECP_ATPAGESIZE
);
2613 outb(val
, (brdp
->iobase
+ ECP_ATMEMPR
));
2617 /*****************************************************************************/
2619 static void stli_ecpreset(struct stlibrd
*brdp
)
2621 outb(ECP_ATSTOP
, (brdp
->iobase
+ ECP_ATCONFR
));
2623 outb(ECP_ATDISABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
2627 /*****************************************************************************/
2629 static void stli_ecpintr(struct stlibrd
*brdp
)
2631 outb(0x1, brdp
->iobase
);
2634 /*****************************************************************************/
2637 * The following set of functions act on ECP EISA boards.
2640 static void stli_ecpeiinit(struct stlibrd
*brdp
)
2642 unsigned long memconf
;
2644 outb(0x1, (brdp
->iobase
+ ECP_EIBRDENAB
));
2645 outb(ECP_EISTOP
, (brdp
->iobase
+ ECP_EICONFR
));
2647 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
2650 memconf
= (brdp
->memaddr
& ECP_EIADDRMASKL
) >> ECP_EIADDRSHFTL
;
2651 outb(memconf
, (brdp
->iobase
+ ECP_EIMEMARL
));
2652 memconf
= (brdp
->memaddr
& ECP_EIADDRMASKH
) >> ECP_EIADDRSHFTH
;
2653 outb(memconf
, (brdp
->iobase
+ ECP_EIMEMARH
));
2656 /*****************************************************************************/
2658 static void stli_ecpeienable(struct stlibrd
*brdp
)
2660 outb(ECP_EIENABLE
, (brdp
->iobase
+ ECP_EICONFR
));
2663 /*****************************************************************************/
2665 static void stli_ecpeidisable(struct stlibrd
*brdp
)
2667 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
2670 /*****************************************************************************/
2672 static void __iomem
*stli_ecpeigetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2677 if (offset
> brdp
->memsize
) {
2678 printk(KERN_ERR
"istallion: shared memory pointer=%x out of "
2679 "range at line=%d(%d), brd=%d\n",
2680 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
2684 ptr
= brdp
->membase
+ (offset
% ECP_EIPAGESIZE
);
2685 if (offset
< ECP_EIPAGESIZE
)
2688 val
= ECP_EIENABLE
| 0x40;
2690 outb(val
, (brdp
->iobase
+ ECP_EICONFR
));
2694 /*****************************************************************************/
2696 static void stli_ecpeireset(struct stlibrd
*brdp
)
2698 outb(ECP_EISTOP
, (brdp
->iobase
+ ECP_EICONFR
));
2700 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
2704 /*****************************************************************************/
2707 * The following set of functions act on ECP MCA boards.
2710 static void stli_ecpmcenable(struct stlibrd
*brdp
)
2712 outb(ECP_MCENABLE
, (brdp
->iobase
+ ECP_MCCONFR
));
2715 /*****************************************************************************/
2717 static void stli_ecpmcdisable(struct stlibrd
*brdp
)
2719 outb(ECP_MCDISABLE
, (brdp
->iobase
+ ECP_MCCONFR
));
2722 /*****************************************************************************/
2724 static void __iomem
*stli_ecpmcgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2729 if (offset
> brdp
->memsize
) {
2730 printk(KERN_ERR
"istallion: shared memory pointer=%x out of "
2731 "range at line=%d(%d), brd=%d\n",
2732 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
2736 ptr
= brdp
->membase
+ (offset
% ECP_MCPAGESIZE
);
2737 val
= ((unsigned char) (offset
/ ECP_MCPAGESIZE
)) | ECP_MCENABLE
;
2739 outb(val
, (brdp
->iobase
+ ECP_MCCONFR
));
2743 /*****************************************************************************/
2745 static void stli_ecpmcreset(struct stlibrd
*brdp
)
2747 outb(ECP_MCSTOP
, (brdp
->iobase
+ ECP_MCCONFR
));
2749 outb(ECP_MCDISABLE
, (brdp
->iobase
+ ECP_MCCONFR
));
2753 /*****************************************************************************/
2756 * The following set of functions act on ECP PCI boards.
2759 static void stli_ecppciinit(struct stlibrd
*brdp
)
2761 outb(ECP_PCISTOP
, (brdp
->iobase
+ ECP_PCICONFR
));
2763 outb(0, (brdp
->iobase
+ ECP_PCICONFR
));
2767 /*****************************************************************************/
2769 static void __iomem
*stli_ecppcigetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2774 if (offset
> brdp
->memsize
) {
2775 printk(KERN_ERR
"istallion: shared memory pointer=%x out of "
2776 "range at line=%d(%d), board=%d\n",
2777 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
2781 ptr
= brdp
->membase
+ (offset
% ECP_PCIPAGESIZE
);
2782 val
= (offset
/ ECP_PCIPAGESIZE
) << 1;
2784 outb(val
, (brdp
->iobase
+ ECP_PCICONFR
));
2788 /*****************************************************************************/
2790 static void stli_ecppcireset(struct stlibrd
*brdp
)
2792 outb(ECP_PCISTOP
, (brdp
->iobase
+ ECP_PCICONFR
));
2794 outb(0, (brdp
->iobase
+ ECP_PCICONFR
));
2798 /*****************************************************************************/
2801 * The following routines act on ONboards.
2804 static void stli_onbinit(struct stlibrd
*brdp
)
2806 unsigned long memconf
;
2808 outb(ONB_ATSTOP
, (brdp
->iobase
+ ONB_ATCONFR
));
2810 outb(ONB_ATDISABLE
, (brdp
->iobase
+ ONB_ATCONFR
));
2813 memconf
= (brdp
->memaddr
& ONB_ATADDRMASK
) >> ONB_ATADDRSHFT
;
2814 outb(memconf
, (brdp
->iobase
+ ONB_ATMEMAR
));
2815 outb(0x1, brdp
->iobase
);
2819 /*****************************************************************************/
2821 static void stli_onbenable(struct stlibrd
*brdp
)
2823 outb((brdp
->enabval
| ONB_ATENABLE
), (brdp
->iobase
+ ONB_ATCONFR
));
2826 /*****************************************************************************/
2828 static void stli_onbdisable(struct stlibrd
*brdp
)
2830 outb((brdp
->enabval
| ONB_ATDISABLE
), (brdp
->iobase
+ ONB_ATCONFR
));
2833 /*****************************************************************************/
2835 static void __iomem
*stli_onbgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2839 if (offset
> brdp
->memsize
) {
2840 printk(KERN_ERR
"istallion: shared memory pointer=%x out of "
2841 "range at line=%d(%d), brd=%d\n",
2842 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
2845 ptr
= brdp
->membase
+ (offset
% ONB_ATPAGESIZE
);
2850 /*****************************************************************************/
2852 static void stli_onbreset(struct stlibrd
*brdp
)
2854 outb(ONB_ATSTOP
, (brdp
->iobase
+ ONB_ATCONFR
));
2856 outb(ONB_ATDISABLE
, (brdp
->iobase
+ ONB_ATCONFR
));
2860 /*****************************************************************************/
2863 * The following routines act on ONboard EISA.
2866 static void stli_onbeinit(struct stlibrd
*brdp
)
2868 unsigned long memconf
;
2870 outb(0x1, (brdp
->iobase
+ ONB_EIBRDENAB
));
2871 outb(ONB_EISTOP
, (brdp
->iobase
+ ONB_EICONFR
));
2873 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
2876 memconf
= (brdp
->memaddr
& ONB_EIADDRMASKL
) >> ONB_EIADDRSHFTL
;
2877 outb(memconf
, (brdp
->iobase
+ ONB_EIMEMARL
));
2878 memconf
= (brdp
->memaddr
& ONB_EIADDRMASKH
) >> ONB_EIADDRSHFTH
;
2879 outb(memconf
, (brdp
->iobase
+ ONB_EIMEMARH
));
2880 outb(0x1, brdp
->iobase
);
2884 /*****************************************************************************/
2886 static void stli_onbeenable(struct stlibrd
*brdp
)
2888 outb(ONB_EIENABLE
, (brdp
->iobase
+ ONB_EICONFR
));
2891 /*****************************************************************************/
2893 static void stli_onbedisable(struct stlibrd
*brdp
)
2895 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
2898 /*****************************************************************************/
2900 static void __iomem
*stli_onbegetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2905 if (offset
> brdp
->memsize
) {
2906 printk(KERN_ERR
"istallion: shared memory pointer=%x out of "
2907 "range at line=%d(%d), brd=%d\n",
2908 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
2912 ptr
= brdp
->membase
+ (offset
% ONB_EIPAGESIZE
);
2913 if (offset
< ONB_EIPAGESIZE
)
2916 val
= ONB_EIENABLE
| 0x40;
2918 outb(val
, (brdp
->iobase
+ ONB_EICONFR
));
2922 /*****************************************************************************/
2924 static void stli_onbereset(struct stlibrd
*brdp
)
2926 outb(ONB_EISTOP
, (brdp
->iobase
+ ONB_EICONFR
));
2928 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
2932 /*****************************************************************************/
2935 * The following routines act on Brumby boards.
2938 static void stli_bbyinit(struct stlibrd
*brdp
)
2940 outb(BBY_ATSTOP
, (brdp
->iobase
+ BBY_ATCONFR
));
2942 outb(0, (brdp
->iobase
+ BBY_ATCONFR
));
2944 outb(0x1, brdp
->iobase
);
2948 /*****************************************************************************/
2950 static void __iomem
*stli_bbygetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2955 BUG_ON(offset
> brdp
->memsize
);
2957 ptr
= brdp
->membase
+ (offset
% BBY_PAGESIZE
);
2958 val
= (unsigned char) (offset
/ BBY_PAGESIZE
);
2959 outb(val
, (brdp
->iobase
+ BBY_ATCONFR
));
2963 /*****************************************************************************/
2965 static void stli_bbyreset(struct stlibrd
*brdp
)
2967 outb(BBY_ATSTOP
, (brdp
->iobase
+ BBY_ATCONFR
));
2969 outb(0, (brdp
->iobase
+ BBY_ATCONFR
));
2973 /*****************************************************************************/
2976 * The following routines act on original old Stallion boards.
2979 static void stli_stalinit(struct stlibrd
*brdp
)
2981 outb(0x1, brdp
->iobase
);
2985 /*****************************************************************************/
2987 static void __iomem
*stli_stalgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2989 BUG_ON(offset
> brdp
->memsize
);
2990 return brdp
->membase
+ (offset
% STAL_PAGESIZE
);
2993 /*****************************************************************************/
2995 static void stli_stalreset(struct stlibrd
*brdp
)
2999 vecp
= (u32 __iomem
*) (brdp
->membase
+ 0x30);
3000 writel(0xffff0000, vecp
);
3001 outb(0, brdp
->iobase
);
3005 /*****************************************************************************/
3008 * Try to find an ECP board and initialize it. This handles only ECP
3012 static int stli_initecp(struct stlibrd
*brdp
)
3015 cdkecpsig_t __iomem
*sigsp
;
3016 unsigned int status
, nxtid
;
3018 int retval
, panelnr
, nrports
;
3020 if ((brdp
->iobase
== 0) || (brdp
->memaddr
== 0)) {
3025 brdp
->iosize
= ECP_IOSIZE
;
3027 if (!request_region(brdp
->iobase
, brdp
->iosize
, "istallion")) {
3033 * Based on the specific board type setup the common vars to access
3034 * and enable shared memory. Set all board specific information now
3037 switch (brdp
->brdtype
) {
3039 brdp
->memsize
= ECP_MEMSIZE
;
3040 brdp
->pagesize
= ECP_ATPAGESIZE
;
3041 brdp
->init
= stli_ecpinit
;
3042 brdp
->enable
= stli_ecpenable
;
3043 brdp
->reenable
= stli_ecpenable
;
3044 brdp
->disable
= stli_ecpdisable
;
3045 brdp
->getmemptr
= stli_ecpgetmemptr
;
3046 brdp
->intr
= stli_ecpintr
;
3047 brdp
->reset
= stli_ecpreset
;
3048 name
= "serial(EC8/64)";
3052 brdp
->memsize
= ECP_MEMSIZE
;
3053 brdp
->pagesize
= ECP_EIPAGESIZE
;
3054 brdp
->init
= stli_ecpeiinit
;
3055 brdp
->enable
= stli_ecpeienable
;
3056 brdp
->reenable
= stli_ecpeienable
;
3057 brdp
->disable
= stli_ecpeidisable
;
3058 brdp
->getmemptr
= stli_ecpeigetmemptr
;
3059 brdp
->intr
= stli_ecpintr
;
3060 brdp
->reset
= stli_ecpeireset
;
3061 name
= "serial(EC8/64-EI)";
3065 brdp
->memsize
= ECP_MEMSIZE
;
3066 brdp
->pagesize
= ECP_MCPAGESIZE
;
3068 brdp
->enable
= stli_ecpmcenable
;
3069 brdp
->reenable
= stli_ecpmcenable
;
3070 brdp
->disable
= stli_ecpmcdisable
;
3071 brdp
->getmemptr
= stli_ecpmcgetmemptr
;
3072 brdp
->intr
= stli_ecpintr
;
3073 brdp
->reset
= stli_ecpmcreset
;
3074 name
= "serial(EC8/64-MCA)";
3078 brdp
->memsize
= ECP_PCIMEMSIZE
;
3079 brdp
->pagesize
= ECP_PCIPAGESIZE
;
3080 brdp
->init
= stli_ecppciinit
;
3081 brdp
->enable
= NULL
;
3082 brdp
->reenable
= NULL
;
3083 brdp
->disable
= NULL
;
3084 brdp
->getmemptr
= stli_ecppcigetmemptr
;
3085 brdp
->intr
= stli_ecpintr
;
3086 brdp
->reset
= stli_ecppcireset
;
3087 name
= "serial(EC/RA-PCI)";
3096 * The per-board operations structure is all set up, so now let's go
3097 * and get the board operational. Firstly initialize board configuration
3098 * registers. Set the memory mapping info so we can get at the boards
3103 brdp
->membase
= ioremap_nocache(brdp
->memaddr
, brdp
->memsize
);
3104 if (brdp
->membase
== NULL
) {
3110 * Now that all specific code is set up, enable the shared memory and
3111 * look for the a signature area that will tell us exactly what board
3112 * this is, and what it is connected to it.
3115 sigsp
= (cdkecpsig_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_SIGADDR
);
3116 memcpy_fromio(&sig
, sigsp
, sizeof(cdkecpsig_t
));
3119 if (sig
.magic
!= cpu_to_le32(ECP_MAGIC
)) {
3125 * Scan through the signature looking at the panels connected to the
3126 * board. Calculate the total number of ports as we go.
3128 for (panelnr
= 0, nxtid
= 0; (panelnr
< STL_MAXPANELS
); panelnr
++) {
3129 status
= sig
.panelid
[nxtid
];
3130 if ((status
& ECH_PNLIDMASK
) != nxtid
)
3133 brdp
->panelids
[panelnr
] = status
;
3134 nrports
= (status
& ECH_PNL16PORT
) ? 16 : 8;
3135 if ((nrports
== 16) && ((status
& ECH_PNLXPID
) == 0))
3137 brdp
->panels
[panelnr
] = nrports
;
3138 brdp
->nrports
+= nrports
;
3144 brdp
->state
|= BST_FOUND
;
3147 iounmap(brdp
->membase
);
3148 brdp
->membase
= NULL
;
3150 release_region(brdp
->iobase
, brdp
->iosize
);
3155 /*****************************************************************************/
3158 * Try to find an ONboard, Brumby or Stallion board and initialize it.
3159 * This handles only these board types.
3162 static int stli_initonb(struct stlibrd
*brdp
)
3165 cdkonbsig_t __iomem
*sigsp
;
3170 * Do a basic sanity check on the IO and memory addresses.
3172 if (brdp
->iobase
== 0 || brdp
->memaddr
== 0) {
3177 brdp
->iosize
= ONB_IOSIZE
;
3179 if (!request_region(brdp
->iobase
, brdp
->iosize
, "istallion")) {
3185 * Based on the specific board type setup the common vars to access
3186 * and enable shared memory. Set all board specific information now
3189 switch (brdp
->brdtype
) {
3192 brdp
->memsize
= ONB_MEMSIZE
;
3193 brdp
->pagesize
= ONB_ATPAGESIZE
;
3194 brdp
->init
= stli_onbinit
;
3195 brdp
->enable
= stli_onbenable
;
3196 brdp
->reenable
= stli_onbenable
;
3197 brdp
->disable
= stli_onbdisable
;
3198 brdp
->getmemptr
= stli_onbgetmemptr
;
3199 brdp
->intr
= stli_ecpintr
;
3200 brdp
->reset
= stli_onbreset
;
3201 if (brdp
->memaddr
> 0x100000)
3202 brdp
->enabval
= ONB_MEMENABHI
;
3204 brdp
->enabval
= ONB_MEMENABLO
;
3205 name
= "serial(ONBoard)";
3209 brdp
->memsize
= ONB_EIMEMSIZE
;
3210 brdp
->pagesize
= ONB_EIPAGESIZE
;
3211 brdp
->init
= stli_onbeinit
;
3212 brdp
->enable
= stli_onbeenable
;
3213 brdp
->reenable
= stli_onbeenable
;
3214 brdp
->disable
= stli_onbedisable
;
3215 brdp
->getmemptr
= stli_onbegetmemptr
;
3216 brdp
->intr
= stli_ecpintr
;
3217 brdp
->reset
= stli_onbereset
;
3218 name
= "serial(ONBoard/E)";
3222 brdp
->memsize
= BBY_MEMSIZE
;
3223 brdp
->pagesize
= BBY_PAGESIZE
;
3224 brdp
->init
= stli_bbyinit
;
3225 brdp
->enable
= NULL
;
3226 brdp
->reenable
= NULL
;
3227 brdp
->disable
= NULL
;
3228 brdp
->getmemptr
= stli_bbygetmemptr
;
3229 brdp
->intr
= stli_ecpintr
;
3230 brdp
->reset
= stli_bbyreset
;
3231 name
= "serial(Brumby)";
3235 brdp
->memsize
= STAL_MEMSIZE
;
3236 brdp
->pagesize
= STAL_PAGESIZE
;
3237 brdp
->init
= stli_stalinit
;
3238 brdp
->enable
= NULL
;
3239 brdp
->reenable
= NULL
;
3240 brdp
->disable
= NULL
;
3241 brdp
->getmemptr
= stli_stalgetmemptr
;
3242 brdp
->intr
= stli_ecpintr
;
3243 brdp
->reset
= stli_stalreset
;
3244 name
= "serial(Stallion)";
3253 * The per-board operations structure is all set up, so now let's go
3254 * and get the board operational. Firstly initialize board configuration
3255 * registers. Set the memory mapping info so we can get at the boards
3260 brdp
->membase
= ioremap_nocache(brdp
->memaddr
, brdp
->memsize
);
3261 if (brdp
->membase
== NULL
) {
3267 * Now that all specific code is set up, enable the shared memory and
3268 * look for the a signature area that will tell us exactly what board
3269 * this is, and how many ports.
3272 sigsp
= (cdkonbsig_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_SIGADDR
);
3273 memcpy_fromio(&sig
, sigsp
, sizeof(cdkonbsig_t
));
3276 if (sig
.magic0
!= cpu_to_le16(ONB_MAGIC0
) ||
3277 sig
.magic1
!= cpu_to_le16(ONB_MAGIC1
) ||
3278 sig
.magic2
!= cpu_to_le16(ONB_MAGIC2
) ||
3279 sig
.magic3
!= cpu_to_le16(ONB_MAGIC3
)) {
3285 * Scan through the signature alive mask and calculate how many ports
3286 * there are on this board.
3292 for (i
= 0; (i
< 16); i
++) {
3293 if (((sig
.amask0
<< i
) & 0x8000) == 0)
3298 brdp
->panels
[0] = brdp
->nrports
;
3301 brdp
->state
|= BST_FOUND
;
3304 iounmap(brdp
->membase
);
3305 brdp
->membase
= NULL
;
3307 release_region(brdp
->iobase
, brdp
->iosize
);
3312 /*****************************************************************************/
3315 * Start up a running board. This routine is only called after the
3316 * code has been down loaded to the board and is operational. It will
3317 * read in the memory map, and get the show on the road...
3320 static int stli_startbrd(struct stlibrd
*brdp
)
3322 cdkhdr_t __iomem
*hdrp
;
3323 cdkmem_t __iomem
*memp
;
3324 cdkasy_t __iomem
*ap
;
3325 unsigned long flags
;
3326 unsigned int portnr
, nrdevs
, i
;
3327 struct stliport
*portp
;
3331 spin_lock_irqsave(&brd_lock
, flags
);
3333 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
3334 nrdevs
= hdrp
->nrdevs
;
3337 printk("%s(%d): CDK version %d.%d.%d --> "
3338 "nrdevs=%d memp=%x hostp=%x slavep=%x\n",
3339 __FILE__
, __LINE__
, readb(&hdrp
->ver_release
), readb(&hdrp
->ver_modification
),
3340 readb(&hdrp
->ver_fix
), nrdevs
, (int) readl(&hdrp
->memp
), readl(&hdrp
->hostp
),
3341 readl(&hdrp
->slavep
));
3344 if (nrdevs
< (brdp
->nrports
+ 1)) {
3345 printk(KERN_ERR
"istallion: slave failed to allocate memory for "
3346 "all devices, devices=%d\n", nrdevs
);
3347 brdp
->nrports
= nrdevs
- 1;
3349 brdp
->nrdevs
= nrdevs
;
3350 brdp
->hostoffset
= hdrp
->hostp
- CDK_CDKADDR
;
3351 brdp
->slaveoffset
= hdrp
->slavep
- CDK_CDKADDR
;
3352 brdp
->bitsize
= (nrdevs
+ 7) / 8;
3353 memoff
= readl(&hdrp
->memp
);
3354 if (memoff
> brdp
->memsize
) {
3355 printk(KERN_ERR
"istallion: corrupted shared memory region?\n");
3357 goto stli_donestartup
;
3359 memp
= (cdkmem_t __iomem
*) EBRDGETMEMPTR(brdp
, memoff
);
3360 if (readw(&memp
->dtype
) != TYP_ASYNCTRL
) {
3361 printk(KERN_ERR
"istallion: no slave control device found\n");
3362 goto stli_donestartup
;
3367 * Cycle through memory allocation of each port. We are guaranteed to
3368 * have all ports inside the first page of slave window, so no need to
3369 * change pages while reading memory map.
3371 for (i
= 1, portnr
= 0; (i
< nrdevs
); i
++, portnr
++, memp
++) {
3372 if (readw(&memp
->dtype
) != TYP_ASYNC
)
3374 portp
= brdp
->ports
[portnr
];
3378 portp
->addr
= readl(&memp
->offset
);
3379 portp
->reqbit
= (unsigned char) (0x1 << (i
* 8 / nrdevs
));
3380 portp
->portidx
= (unsigned char) (i
/ 8);
3381 portp
->portbit
= (unsigned char) (0x1 << (i
% 8));
3384 writeb(0xff, &hdrp
->slavereq
);
3387 * For each port setup a local copy of the RX and TX buffer offsets
3388 * and sizes. We do this separate from the above, because we need to
3389 * move the shared memory page...
3391 for (i
= 1, portnr
= 0; (i
< nrdevs
); i
++, portnr
++) {
3392 portp
= brdp
->ports
[portnr
];
3395 if (portp
->addr
== 0)
3397 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
3399 portp
->rxsize
= readw(&ap
->rxq
.size
);
3400 portp
->txsize
= readw(&ap
->txq
.size
);
3401 portp
->rxoffset
= readl(&ap
->rxq
.offset
);
3402 portp
->txoffset
= readl(&ap
->txq
.offset
);
3408 spin_unlock_irqrestore(&brd_lock
, flags
);
3411 brdp
->state
|= BST_STARTED
;
3413 if (! stli_timeron
) {
3415 mod_timer(&stli_timerlist
, STLI_TIMEOUT
);
3421 /*****************************************************************************/
3424 * Probe and initialize the specified board.
3427 static int __devinit
stli_brdinit(struct stlibrd
*brdp
)
3431 switch (brdp
->brdtype
) {
3436 retval
= stli_initecp(brdp
);
3443 retval
= stli_initonb(brdp
);
3446 printk(KERN_ERR
"istallion: board=%d is unknown board "
3447 "type=%d\n", brdp
->brdnr
, brdp
->brdtype
);
3454 stli_initports(brdp
);
3455 printk(KERN_INFO
"istallion: %s found, board=%d io=%x mem=%x "
3456 "nrpanels=%d nrports=%d\n", stli_brdnames
[brdp
->brdtype
],
3457 brdp
->brdnr
, brdp
->iobase
, (int) brdp
->memaddr
,
3458 brdp
->nrpanels
, brdp
->nrports
);
3462 #if STLI_EISAPROBE != 0
3463 /*****************************************************************************/
3466 * Probe around trying to find where the EISA boards shared memory
3467 * might be. This is a bit if hack, but it is the best we can do.
3470 static int stli_eisamemprobe(struct stlibrd
*brdp
)
3472 cdkecpsig_t ecpsig
, __iomem
*ecpsigp
;
3473 cdkonbsig_t onbsig
, __iomem
*onbsigp
;
3477 * First up we reset the board, to get it into a known state. There
3478 * is only 2 board types here we need to worry about. Don;t use the
3479 * standard board init routine here, it programs up the shared
3480 * memory address, and we don't know it yet...
3482 if (brdp
->brdtype
== BRD_ECPE
) {
3483 outb(0x1, (brdp
->iobase
+ ECP_EIBRDENAB
));
3484 outb(ECP_EISTOP
, (brdp
->iobase
+ ECP_EICONFR
));
3486 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
3488 stli_ecpeienable(brdp
);
3489 } else if (brdp
->brdtype
== BRD_ONBOARDE
) {
3490 outb(0x1, (brdp
->iobase
+ ONB_EIBRDENAB
));
3491 outb(ONB_EISTOP
, (brdp
->iobase
+ ONB_EICONFR
));
3493 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
3495 outb(0x1, brdp
->iobase
);
3497 stli_onbeenable(brdp
);
3503 brdp
->memsize
= ECP_MEMSIZE
;
3506 * Board shared memory is enabled, so now we have a poke around and
3507 * see if we can find it.
3509 for (i
= 0; (i
< stli_eisamempsize
); i
++) {
3510 brdp
->memaddr
= stli_eisamemprobeaddrs
[i
];
3511 brdp
->membase
= ioremap_nocache(brdp
->memaddr
, brdp
->memsize
);
3512 if (brdp
->membase
== NULL
)
3515 if (brdp
->brdtype
== BRD_ECPE
) {
3516 ecpsigp
= stli_ecpeigetmemptr(brdp
,
3517 CDK_SIGADDR
, __LINE__
);
3518 memcpy_fromio(&ecpsig
, ecpsigp
, sizeof(cdkecpsig_t
));
3519 if (ecpsig
.magic
== cpu_to_le32(ECP_MAGIC
))
3522 onbsigp
= (cdkonbsig_t __iomem
*) stli_onbegetmemptr(brdp
,
3523 CDK_SIGADDR
, __LINE__
);
3524 memcpy_fromio(&onbsig
, onbsigp
, sizeof(cdkonbsig_t
));
3525 if ((onbsig
.magic0
== cpu_to_le16(ONB_MAGIC0
)) &&
3526 (onbsig
.magic1
== cpu_to_le16(ONB_MAGIC1
)) &&
3527 (onbsig
.magic2
== cpu_to_le16(ONB_MAGIC2
)) &&
3528 (onbsig
.magic3
== cpu_to_le16(ONB_MAGIC3
)))
3532 iounmap(brdp
->membase
);
3538 * Regardless of whether we found the shared memory or not we must
3539 * disable the region. After that return success or failure.
3541 if (brdp
->brdtype
== BRD_ECPE
)
3542 stli_ecpeidisable(brdp
);
3544 stli_onbedisable(brdp
);
3548 brdp
->membase
= NULL
;
3549 printk(KERN_ERR
"istallion: failed to probe shared memory "
3550 "region for %s in EISA slot=%d\n",
3551 stli_brdnames
[brdp
->brdtype
], (brdp
->iobase
>> 12));
3558 static int stli_getbrdnr(void)
3562 for (i
= 0; i
< STL_MAXBRDS
; i
++) {
3563 if (!stli_brds
[i
]) {
3564 if (i
>= stli_nrbrds
)
3565 stli_nrbrds
= i
+ 1;
3572 #if STLI_EISAPROBE != 0
3573 /*****************************************************************************/
3576 * Probe around and try to find any EISA boards in system. The biggest
3577 * problem here is finding out what memory address is associated with
3578 * an EISA board after it is found. The registers of the ECPE and
3579 * ONboardE are not readable - so we can't read them from there. We
3580 * don't have access to the EISA CMOS (or EISA BIOS) so we don't
3581 * actually have any way to find out the real value. The best we can
3582 * do is go probing around in the usual places hoping we can find it.
3585 static int __init
stli_findeisabrds(void)
3587 struct stlibrd
*brdp
;
3588 unsigned int iobase
, eid
, i
;
3589 int brdnr
, found
= 0;
3592 * Firstly check if this is an EISA system. If this is not an EISA system then
3593 * don't bother going any further!
3599 * Looks like an EISA system, so go searching for EISA boards.
3601 for (iobase
= 0x1000; (iobase
<= 0xc000); iobase
+= 0x1000) {
3602 outb(0xff, (iobase
+ 0xc80));
3603 eid
= inb(iobase
+ 0xc80);
3604 eid
|= inb(iobase
+ 0xc81) << 8;
3605 if (eid
!= STL_EISAID
)
3609 * We have found a board. Need to check if this board was
3610 * statically configured already (just in case!).
3612 for (i
= 0; (i
< STL_MAXBRDS
); i
++) {
3613 brdp
= stli_brds
[i
];
3616 if (brdp
->iobase
== iobase
)
3619 if (i
< STL_MAXBRDS
)
3623 * We have found a Stallion board and it is not configured already.
3624 * Allocate a board structure and initialize it.
3626 if ((brdp
= stli_allocbrd()) == NULL
)
3627 return found
? : -ENOMEM
;
3628 brdnr
= stli_getbrdnr();
3630 return found
? : -ENOMEM
;
3631 brdp
->brdnr
= (unsigned int)brdnr
;
3632 eid
= inb(iobase
+ 0xc82);
3633 if (eid
== ECP_EISAID
)
3634 brdp
->brdtype
= BRD_ECPE
;
3635 else if (eid
== ONB_EISAID
)
3636 brdp
->brdtype
= BRD_ONBOARDE
;
3638 brdp
->brdtype
= BRD_UNKNOWN
;
3639 brdp
->iobase
= iobase
;
3640 outb(0x1, (iobase
+ 0xc84));
3641 if (stli_eisamemprobe(brdp
))
3642 outb(0, (iobase
+ 0xc84));
3643 if (stli_brdinit(brdp
) < 0) {
3648 stli_brds
[brdp
->brdnr
] = brdp
;
3651 for (i
= 0; i
< brdp
->nrports
; i
++)
3652 tty_register_device(stli_serial
,
3653 brdp
->brdnr
* STL_MAXPORTS
+ i
, NULL
);
3659 static inline int stli_findeisabrds(void) { return 0; }
3662 /*****************************************************************************/
3665 * Find the next available board number that is free.
3668 /*****************************************************************************/
3671 * We have a Stallion board. Allocate a board structure and
3672 * initialize it. Read its IO and MEMORY resources from PCI
3673 * configuration space.
3676 static int __devinit
stli_pciprobe(struct pci_dev
*pdev
,
3677 const struct pci_device_id
*ent
)
3679 struct stlibrd
*brdp
;
3681 int brdnr
, retval
= -EIO
;
3683 retval
= pci_enable_device(pdev
);
3686 brdp
= stli_allocbrd();
3691 mutex_lock(&stli_brdslock
);
3692 brdnr
= stli_getbrdnr();
3694 printk(KERN_INFO
"istallion: too many boards found, "
3695 "maximum supported %d\n", STL_MAXBRDS
);
3696 mutex_unlock(&stli_brdslock
);
3700 brdp
->brdnr
= (unsigned int)brdnr
;
3701 stli_brds
[brdp
->brdnr
] = brdp
;
3702 mutex_unlock(&stli_brdslock
);
3703 brdp
->brdtype
= BRD_ECPPCI
;
3705 * We have all resources from the board, so lets setup the actual
3706 * board structure now.
3708 brdp
->iobase
= pci_resource_start(pdev
, 3);
3709 brdp
->memaddr
= pci_resource_start(pdev
, 2);
3710 retval
= stli_brdinit(brdp
);
3714 brdp
->state
|= BST_PROBED
;
3715 pci_set_drvdata(pdev
, brdp
);
3718 brdp
->enable
= NULL
;
3719 brdp
->disable
= NULL
;
3721 for (i
= 0; i
< brdp
->nrports
; i
++)
3722 tty_register_device(stli_serial
, brdp
->brdnr
* STL_MAXPORTS
+ i
,
3727 stli_brds
[brdp
->brdnr
] = NULL
;
3734 static void __devexit
stli_pciremove(struct pci_dev
*pdev
)
3736 struct stlibrd
*brdp
= pci_get_drvdata(pdev
);
3738 stli_cleanup_ports(brdp
);
3740 iounmap(brdp
->membase
);
3741 if (brdp
->iosize
> 0)
3742 release_region(brdp
->iobase
, brdp
->iosize
);
3744 stli_brds
[brdp
->brdnr
] = NULL
;
3748 static struct pci_driver stli_pcidriver
= {
3749 .name
= "istallion",
3750 .id_table
= istallion_pci_tbl
,
3751 .probe
= stli_pciprobe
,
3752 .remove
= __devexit_p(stli_pciremove
)
3754 /*****************************************************************************/
3757 * Allocate a new board structure. Fill out the basic info in it.
3760 static struct stlibrd
*stli_allocbrd(void)
3762 struct stlibrd
*brdp
;
3764 brdp
= kzalloc(sizeof(struct stlibrd
), GFP_KERNEL
);
3766 printk(KERN_ERR
"istallion: failed to allocate memory "
3767 "(size=%Zd)\n", sizeof(struct stlibrd
));
3770 brdp
->magic
= STLI_BOARDMAGIC
;
3774 /*****************************************************************************/
3777 * Scan through all the boards in the configuration and see what we
3781 static int __init
stli_initbrds(void)
3783 struct stlibrd
*brdp
, *nxtbrdp
;
3784 struct stlconf conf
;
3785 unsigned int i
, j
, found
= 0;
3788 for (stli_nrbrds
= 0; stli_nrbrds
< ARRAY_SIZE(stli_brdsp
);
3790 memset(&conf
, 0, sizeof(conf
));
3791 if (stli_parsebrd(&conf
, stli_brdsp
[stli_nrbrds
]) == 0)
3793 if ((brdp
= stli_allocbrd()) == NULL
)
3795 brdp
->brdnr
= stli_nrbrds
;
3796 brdp
->brdtype
= conf
.brdtype
;
3797 brdp
->iobase
= conf
.ioaddr1
;
3798 brdp
->memaddr
= conf
.memaddr
;
3799 if (stli_brdinit(brdp
) < 0) {
3803 stli_brds
[brdp
->brdnr
] = brdp
;
3806 for (i
= 0; i
< brdp
->nrports
; i
++)
3807 tty_register_device(stli_serial
,
3808 brdp
->brdnr
* STL_MAXPORTS
+ i
, NULL
);
3811 retval
= stli_findeisabrds();
3816 * All found boards are initialized. Now for a little optimization, if
3817 * no boards are sharing the "shared memory" regions then we can just
3818 * leave them all enabled. This is in fact the usual case.
3821 if (stli_nrbrds
> 1) {
3822 for (i
= 0; (i
< stli_nrbrds
); i
++) {
3823 brdp
= stli_brds
[i
];
3826 for (j
= i
+ 1; (j
< stli_nrbrds
); j
++) {
3827 nxtbrdp
= stli_brds
[j
];
3828 if (nxtbrdp
== NULL
)
3830 if ((brdp
->membase
>= nxtbrdp
->membase
) &&
3831 (brdp
->membase
<= (nxtbrdp
->membase
+
3832 nxtbrdp
->memsize
- 1))) {
3840 if (stli_shared
== 0) {
3841 for (i
= 0; (i
< stli_nrbrds
); i
++) {
3842 brdp
= stli_brds
[i
];
3845 if (brdp
->state
& BST_FOUND
) {
3847 brdp
->enable
= NULL
;
3848 brdp
->disable
= NULL
;
3853 retval
= pci_register_driver(&stli_pcidriver
);
3854 if (retval
&& found
== 0) {
3855 printk(KERN_ERR
"Neither isa nor eisa cards found nor pci "
3856 "driver can be registered!\n");
3865 /*****************************************************************************/
3868 * Code to handle an "staliomem" read operation. This device is the
3869 * contents of the board shared memory. It is used for down loading
3870 * the slave image (and debugging :-)
3873 static ssize_t
stli_memread(struct file
*fp
, char __user
*buf
, size_t count
, loff_t
*offp
)
3875 unsigned long flags
;
3876 void __iomem
*memptr
;
3877 struct stlibrd
*brdp
;
3883 brdnr
= iminor(fp
->f_path
.dentry
->d_inode
);
3884 if (brdnr
>= stli_nrbrds
)
3886 brdp
= stli_brds
[brdnr
];
3889 if (brdp
->state
== 0)
3891 if (off
>= brdp
->memsize
|| off
+ count
< off
)
3894 size
= min(count
, (size_t)(brdp
->memsize
- off
));
3897 * Copy the data a page at a time
3900 p
= (void *)__get_free_page(GFP_KERNEL
);
3905 spin_lock_irqsave(&brd_lock
, flags
);
3907 memptr
= EBRDGETMEMPTR(brdp
, off
);
3908 n
= min(size
, (int)(brdp
->pagesize
- (((unsigned long) off
) % brdp
->pagesize
)));
3909 n
= min(n
, (int)PAGE_SIZE
);
3910 memcpy_fromio(p
, memptr
, n
);
3912 spin_unlock_irqrestore(&brd_lock
, flags
);
3913 if (copy_to_user(buf
, p
, n
)) {
3923 free_page((unsigned long)p
);
3927 /*****************************************************************************/
3930 * Code to handle an "staliomem" write operation. This device is the
3931 * contents of the board shared memory. It is used for down loading
3932 * the slave image (and debugging :-)
3934 * FIXME: copy under lock
3937 static ssize_t
stli_memwrite(struct file
*fp
, const char __user
*buf
, size_t count
, loff_t
*offp
)
3939 unsigned long flags
;
3940 void __iomem
*memptr
;
3941 struct stlibrd
*brdp
;
3948 brdnr
= iminor(fp
->f_path
.dentry
->d_inode
);
3950 if (brdnr
>= stli_nrbrds
)
3952 brdp
= stli_brds
[brdnr
];
3955 if (brdp
->state
== 0)
3957 if (off
>= brdp
->memsize
|| off
+ count
< off
)
3960 chbuf
= (char __user
*) buf
;
3961 size
= min(count
, (size_t)(brdp
->memsize
- off
));
3964 * Copy the data a page at a time
3967 p
= (void *)__get_free_page(GFP_KERNEL
);
3972 n
= min(size
, (int)(brdp
->pagesize
- (((unsigned long) off
) % brdp
->pagesize
)));
3973 n
= min(n
, (int)PAGE_SIZE
);
3974 if (copy_from_user(p
, chbuf
, n
)) {
3979 spin_lock_irqsave(&brd_lock
, flags
);
3981 memptr
= EBRDGETMEMPTR(brdp
, off
);
3982 memcpy_toio(memptr
, p
, n
);
3984 spin_unlock_irqrestore(&brd_lock
, flags
);
3990 free_page((unsigned long) p
);
3995 /*****************************************************************************/
3998 * Return the board stats structure to user app.
4001 static int stli_getbrdstats(combrd_t __user
*bp
)
4003 struct stlibrd
*brdp
;
4006 if (copy_from_user(&stli_brdstats
, bp
, sizeof(combrd_t
)))
4008 if (stli_brdstats
.brd
>= STL_MAXBRDS
)
4010 brdp
= stli_brds
[stli_brdstats
.brd
];
4014 memset(&stli_brdstats
, 0, sizeof(combrd_t
));
4016 stli_brdstats
.brd
= brdp
->brdnr
;
4017 stli_brdstats
.type
= brdp
->brdtype
;
4018 stli_brdstats
.hwid
= 0;
4019 stli_brdstats
.state
= brdp
->state
;
4020 stli_brdstats
.ioaddr
= brdp
->iobase
;
4021 stli_brdstats
.memaddr
= brdp
->memaddr
;
4022 stli_brdstats
.nrpanels
= brdp
->nrpanels
;
4023 stli_brdstats
.nrports
= brdp
->nrports
;
4024 for (i
= 0; (i
< brdp
->nrpanels
); i
++) {
4025 stli_brdstats
.panels
[i
].panel
= i
;
4026 stli_brdstats
.panels
[i
].hwid
= brdp
->panelids
[i
];
4027 stli_brdstats
.panels
[i
].nrports
= brdp
->panels
[i
];
4030 if (copy_to_user(bp
, &stli_brdstats
, sizeof(combrd_t
)))
4035 /*****************************************************************************/
4038 * Resolve the referenced port number into a port struct pointer.
4041 static struct stliport
*stli_getport(unsigned int brdnr
, unsigned int panelnr
,
4042 unsigned int portnr
)
4044 struct stlibrd
*brdp
;
4047 if (brdnr
>= STL_MAXBRDS
)
4049 brdp
= stli_brds
[brdnr
];
4052 for (i
= 0; (i
< panelnr
); i
++)
4053 portnr
+= brdp
->panels
[i
];
4054 if (portnr
>= brdp
->nrports
)
4056 return brdp
->ports
[portnr
];
4059 /*****************************************************************************/
4062 * Return the port stats structure to user app. A NULL port struct
4063 * pointer passed in means that we need to find out from the app
4064 * what port to get stats for (used through board control device).
4067 static int stli_portcmdstats(struct tty_struct
*tty
, struct stliport
*portp
)
4069 unsigned long flags
;
4070 struct stlibrd
*brdp
;
4073 memset(&stli_comstats
, 0, sizeof(comstats_t
));
4077 brdp
= stli_brds
[portp
->brdnr
];
4081 mutex_lock(&portp
->port
.mutex
);
4082 if (brdp
->state
& BST_STARTED
) {
4083 if ((rc
= stli_cmdwait(brdp
, portp
, A_GETSTATS
,
4084 &stli_cdkstats
, sizeof(asystats_t
), 1)) < 0) {
4085 mutex_unlock(&portp
->port
.mutex
);
4089 memset(&stli_cdkstats
, 0, sizeof(asystats_t
));
4092 stli_comstats
.brd
= portp
->brdnr
;
4093 stli_comstats
.panel
= portp
->panelnr
;
4094 stli_comstats
.port
= portp
->portnr
;
4095 stli_comstats
.state
= portp
->state
;
4096 stli_comstats
.flags
= portp
->port
.flags
;
4098 spin_lock_irqsave(&brd_lock
, flags
);
4100 if (portp
->port
.tty
== tty
) {
4101 stli_comstats
.ttystate
= tty
->flags
;
4102 stli_comstats
.rxbuffered
= -1;
4103 if (tty
->termios
!= NULL
) {
4104 stli_comstats
.cflags
= tty
->termios
->c_cflag
;
4105 stli_comstats
.iflags
= tty
->termios
->c_iflag
;
4106 stli_comstats
.oflags
= tty
->termios
->c_oflag
;
4107 stli_comstats
.lflags
= tty
->termios
->c_lflag
;
4111 spin_unlock_irqrestore(&brd_lock
, flags
);
4113 stli_comstats
.txtotal
= stli_cdkstats
.txchars
;
4114 stli_comstats
.rxtotal
= stli_cdkstats
.rxchars
+ stli_cdkstats
.ringover
;
4115 stli_comstats
.txbuffered
= stli_cdkstats
.txringq
;
4116 stli_comstats
.rxbuffered
+= stli_cdkstats
.rxringq
;
4117 stli_comstats
.rxoverrun
= stli_cdkstats
.overruns
;
4118 stli_comstats
.rxparity
= stli_cdkstats
.parity
;
4119 stli_comstats
.rxframing
= stli_cdkstats
.framing
;
4120 stli_comstats
.rxlost
= stli_cdkstats
.ringover
;
4121 stli_comstats
.rxbreaks
= stli_cdkstats
.rxbreaks
;
4122 stli_comstats
.txbreaks
= stli_cdkstats
.txbreaks
;
4123 stli_comstats
.txxon
= stli_cdkstats
.txstart
;
4124 stli_comstats
.txxoff
= stli_cdkstats
.txstop
;
4125 stli_comstats
.rxxon
= stli_cdkstats
.rxstart
;
4126 stli_comstats
.rxxoff
= stli_cdkstats
.rxstop
;
4127 stli_comstats
.rxrtsoff
= stli_cdkstats
.rtscnt
/ 2;
4128 stli_comstats
.rxrtson
= stli_cdkstats
.rtscnt
- stli_comstats
.rxrtsoff
;
4129 stli_comstats
.modem
= stli_cdkstats
.dcdcnt
;
4130 stli_comstats
.hwid
= stli_cdkstats
.hwid
;
4131 stli_comstats
.signals
= stli_mktiocm(stli_cdkstats
.signals
);
4132 mutex_unlock(&portp
->port
.mutex
);
4137 /*****************************************************************************/
4140 * Return the port stats structure to user app. A NULL port struct
4141 * pointer passed in means that we need to find out from the app
4142 * what port to get stats for (used through board control device).
4145 static int stli_getportstats(struct tty_struct
*tty
, struct stliport
*portp
,
4146 comstats_t __user
*cp
)
4148 struct stlibrd
*brdp
;
4152 if (copy_from_user(&stli_comstats
, cp
, sizeof(comstats_t
)))
4154 portp
= stli_getport(stli_comstats
.brd
, stli_comstats
.panel
,
4155 stli_comstats
.port
);
4160 brdp
= stli_brds
[portp
->brdnr
];
4164 if ((rc
= stli_portcmdstats(tty
, portp
)) < 0)
4167 return copy_to_user(cp
, &stli_comstats
, sizeof(comstats_t
)) ?
4171 /*****************************************************************************/
4174 * Clear the port stats structure. We also return it zeroed out...
4177 static int stli_clrportstats(struct stliport
*portp
, comstats_t __user
*cp
)
4179 struct stlibrd
*brdp
;
4183 if (copy_from_user(&stli_comstats
, cp
, sizeof(comstats_t
)))
4185 portp
= stli_getport(stli_comstats
.brd
, stli_comstats
.panel
,
4186 stli_comstats
.port
);
4191 brdp
= stli_brds
[portp
->brdnr
];
4195 mutex_lock(&portp
->port
.mutex
);
4197 if (brdp
->state
& BST_STARTED
) {
4198 if ((rc
= stli_cmdwait(brdp
, portp
, A_CLEARSTATS
, NULL
, 0, 0)) < 0) {
4199 mutex_unlock(&portp
->port
.mutex
);
4204 memset(&stli_comstats
, 0, sizeof(comstats_t
));
4205 stli_comstats
.brd
= portp
->brdnr
;
4206 stli_comstats
.panel
= portp
->panelnr
;
4207 stli_comstats
.port
= portp
->portnr
;
4208 mutex_unlock(&portp
->port
.mutex
);
4210 if (copy_to_user(cp
, &stli_comstats
, sizeof(comstats_t
)))
4215 /*****************************************************************************/
4218 * Return the entire driver ports structure to a user app.
4221 static int stli_getportstruct(struct stliport __user
*arg
)
4223 struct stliport stli_dummyport
;
4224 struct stliport
*portp
;
4226 if (copy_from_user(&stli_dummyport
, arg
, sizeof(struct stliport
)))
4228 portp
= stli_getport(stli_dummyport
.brdnr
, stli_dummyport
.panelnr
,
4229 stli_dummyport
.portnr
);
4232 if (copy_to_user(arg
, portp
, sizeof(struct stliport
)))
4237 /*****************************************************************************/
4240 * Return the entire driver board structure to a user app.
4243 static int stli_getbrdstruct(struct stlibrd __user
*arg
)
4245 struct stlibrd stli_dummybrd
;
4246 struct stlibrd
*brdp
;
4248 if (copy_from_user(&stli_dummybrd
, arg
, sizeof(struct stlibrd
)))
4250 if (stli_dummybrd
.brdnr
>= STL_MAXBRDS
)
4252 brdp
= stli_brds
[stli_dummybrd
.brdnr
];
4255 if (copy_to_user(arg
, brdp
, sizeof(struct stlibrd
)))
4260 /*****************************************************************************/
4263 * The "staliomem" device is also required to do some special operations on
4264 * the board. We need to be able to send an interrupt to the board,
4265 * reset it, and start/stop it.
4268 static long stli_memioctl(struct file
*fp
, unsigned int cmd
, unsigned long arg
)
4270 struct stlibrd
*brdp
;
4271 int brdnr
, rc
, done
;
4272 void __user
*argp
= (void __user
*)arg
;
4275 * First up handle the board independent ioctls.
4281 case COM_GETPORTSTATS
:
4282 rc
= stli_getportstats(NULL
, NULL
, argp
);
4285 case COM_CLRPORTSTATS
:
4286 rc
= stli_clrportstats(NULL
, argp
);
4289 case COM_GETBRDSTATS
:
4290 rc
= stli_getbrdstats(argp
);
4294 rc
= stli_getportstruct(argp
);
4298 rc
= stli_getbrdstruct(argp
);
4306 * Now handle the board specific ioctls. These all depend on the
4307 * minor number of the device they were called from.
4309 brdnr
= iminor(fp
->f_dentry
->d_inode
);
4310 if (brdnr
>= STL_MAXBRDS
)
4312 brdp
= stli_brds
[brdnr
];
4315 if (brdp
->state
== 0)
4323 rc
= stli_startbrd(brdp
);
4326 brdp
->state
&= ~BST_STARTED
;
4329 brdp
->state
&= ~BST_STARTED
;
4331 if (stli_shared
== 0) {
4332 if (brdp
->reenable
!= NULL
)
4333 (* brdp
->reenable
)(brdp
);
4343 static const struct tty_operations stli_ops
= {
4345 .close
= stli_close
,
4346 .write
= stli_write
,
4347 .put_char
= stli_putchar
,
4348 .flush_chars
= stli_flushchars
,
4349 .write_room
= stli_writeroom
,
4350 .chars_in_buffer
= stli_charsinbuffer
,
4351 .ioctl
= stli_ioctl
,
4352 .set_termios
= stli_settermios
,
4353 .throttle
= stli_throttle
,
4354 .unthrottle
= stli_unthrottle
,
4356 .start
= stli_start
,
4357 .hangup
= stli_hangup
,
4358 .flush_buffer
= stli_flushbuffer
,
4359 .break_ctl
= stli_breakctl
,
4360 .wait_until_sent
= stli_waituntilsent
,
4361 .send_xchar
= stli_sendxchar
,
4362 .tiocmget
= stli_tiocmget
,
4363 .tiocmset
= stli_tiocmset
,
4364 .proc_fops
= &stli_proc_fops
,
4367 static const struct tty_port_operations stli_port_ops
= {
4368 .carrier_raised
= stli_carrier_raised
,
4369 .dtr_rts
= stli_dtr_rts
,
4370 .activate
= stli_activate
,
4371 .shutdown
= stli_shutdown
,
4374 /*****************************************************************************/
4376 * Loadable module initialization stuff.
4379 static void istallion_cleanup_isa(void)
4381 struct stlibrd
*brdp
;
4384 for (j
= 0; (j
< stli_nrbrds
); j
++) {
4385 if ((brdp
= stli_brds
[j
]) == NULL
|| (brdp
->state
& BST_PROBED
))
4388 stli_cleanup_ports(brdp
);
4390 iounmap(brdp
->membase
);
4391 if (brdp
->iosize
> 0)
4392 release_region(brdp
->iobase
, brdp
->iosize
);
4394 stli_brds
[j
] = NULL
;
4398 static int __init
istallion_module_init(void)
4403 printk(KERN_INFO
"%s: version %s\n", stli_drvtitle
, stli_drvversion
);
4405 spin_lock_init(&stli_lock
);
4406 spin_lock_init(&brd_lock
);
4408 stli_txcookbuf
= kmalloc(STLI_TXBUFSIZE
, GFP_KERNEL
);
4409 if (!stli_txcookbuf
) {
4410 printk(KERN_ERR
"istallion: failed to allocate memory "
4411 "(size=%d)\n", STLI_TXBUFSIZE
);
4416 stli_serial
= alloc_tty_driver(STL_MAXBRDS
* STL_MAXPORTS
);
4422 stli_serial
->owner
= THIS_MODULE
;
4423 stli_serial
->driver_name
= stli_drvname
;
4424 stli_serial
->name
= stli_serialname
;
4425 stli_serial
->major
= STL_SERIALMAJOR
;
4426 stli_serial
->minor_start
= 0;
4427 stli_serial
->type
= TTY_DRIVER_TYPE_SERIAL
;
4428 stli_serial
->subtype
= SERIAL_TYPE_NORMAL
;
4429 stli_serial
->init_termios
= stli_deftermios
;
4430 stli_serial
->flags
= TTY_DRIVER_REAL_RAW
| TTY_DRIVER_DYNAMIC_DEV
;
4431 tty_set_operations(stli_serial
, &stli_ops
);
4433 retval
= tty_register_driver(stli_serial
);
4435 printk(KERN_ERR
"istallion: failed to register serial driver\n");
4439 retval
= stli_initbrds();
4444 * Set up a character driver for the shared memory region. We need this
4445 * to down load the slave code image. Also it is a useful debugging tool.
4447 retval
= register_chrdev(STL_SIOMEMMAJOR
, "staliomem", &stli_fsiomem
);
4449 printk(KERN_ERR
"istallion: failed to register serial memory "
4454 istallion_class
= class_create(THIS_MODULE
, "staliomem");
4455 for (i
= 0; i
< 4; i
++)
4456 device_create(istallion_class
, NULL
, MKDEV(STL_SIOMEMMAJOR
, i
),
4457 NULL
, "staliomem%d", i
);
4461 pci_unregister_driver(&stli_pcidriver
);
4462 istallion_cleanup_isa();
4464 tty_unregister_driver(stli_serial
);
4466 put_tty_driver(stli_serial
);
4468 kfree(stli_txcookbuf
);
4473 /*****************************************************************************/
4475 static void __exit
istallion_module_exit(void)
4479 printk(KERN_INFO
"Unloading %s: version %s\n", stli_drvtitle
,
4484 del_timer_sync(&stli_timerlist
);
4487 unregister_chrdev(STL_SIOMEMMAJOR
, "staliomem");
4489 for (j
= 0; j
< 4; j
++)
4490 device_destroy(istallion_class
, MKDEV(STL_SIOMEMMAJOR
, j
));
4491 class_destroy(istallion_class
);
4493 pci_unregister_driver(&stli_pcidriver
);
4494 istallion_cleanup_isa();
4496 tty_unregister_driver(stli_serial
);
4497 put_tty_driver(stli_serial
);
4499 kfree(stli_txcookbuf
);
4502 module_init(istallion_module_init
);
4503 module_exit(istallion_module_exit
);