1 /*****************************************************************************/
4 * istallion.c -- stallion intelligent multiport serial driver.
6 * Copyright (C) 1996-1999 Stallion Technologies
7 * Copyright (C) 1994-1996 Greg Ungerer.
9 * This code is loosely based on the Linux serial driver, written by
10 * Linus Torvalds, Theodore T'so and others.
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
19 /*****************************************************************************/
21 #include <linux/module.h>
22 #include <linux/slab.h>
23 #include <linux/interrupt.h>
24 #include <linux/tty.h>
25 #include <linux/tty_flip.h>
26 #include <linux/serial.h>
27 #include <linux/seq_file.h>
28 #include <linux/cdk.h>
29 #include <linux/comstats.h>
30 #include <linux/istallion.h>
31 #include <linux/ioport.h>
32 #include <linux/delay.h>
33 #include <linux/init.h>
34 #include <linux/device.h>
35 #include <linux/wait.h>
36 #include <linux/eisa.h>
37 #include <linux/ctype.h>
40 #include <asm/uaccess.h>
42 #include <linux/pci.h>
44 /*****************************************************************************/
47 * Define different board types. Not all of the following board types
48 * are supported by this driver. But I will use the standard "assigned"
49 * board numbers. Currently supported boards are abbreviated as:
50 * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and
54 #define BRD_STALLION 1
56 #define BRD_ONBOARD2 3
58 #define BRD_ONBOARDE 7
64 #define BRD_BRUMBY BRD_BRUMBY4
67 * Define a configuration structure to hold the board configuration.
68 * Need to set this up in the code (for now) with the boards that are
69 * to be configured into the system. This is what needs to be modified
70 * when adding/removing/modifying boards. Each line entry in the
71 * stli_brdconf[] array is a board. Each line contains io/irq/memory
72 * ranges for that board (as well as what type of board it is).
74 * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },
75 * This line will configure an EasyConnection 8/64 at io address 2a0,
76 * and shared memory address of cc000. Multiple EasyConnection 8/64
77 * boards can share the same shared memory address space. No interrupt
78 * is required for this board type.
80 * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 },
81 * This line will configure an EasyConnection 8/64 EISA in slot 5 and
82 * shared memory address of 0x80000000 (2 GByte). Multiple
83 * EasyConnection 8/64 EISA boards can share the same shared memory
84 * address space. No interrupt is required for this board type.
86 * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 },
87 * This line will configure an ONboard (ISA type) at io address 240,
88 * and shared memory address of d0000. Multiple ONboards can share
89 * the same shared memory address space. No interrupt required.
91 * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 },
92 * This line will configure a Brumby board (any number of ports!) at
93 * io address 360 and shared memory address of c8000. All Brumby boards
94 * configured into a system must have their own separate io and memory
95 * addresses. No interrupt is required.
97 * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 },
98 * This line will configure an original Stallion board at io address 330
99 * and shared memory address d0000 (this would only be valid for a "V4.0"
100 * or Rev.O Stallion board). All Stallion boards configured into the
101 * system must have their own separate io and memory addresses. No
102 * interrupt is required.
109 unsigned long memaddr
;
114 static unsigned int stli_nrbrds
;
116 /* stli_lock must NOT be taken holding brd_lock */
117 static spinlock_t stli_lock
; /* TTY logic lock */
118 static spinlock_t brd_lock
; /* Board logic lock */
121 * There is some experimental EISA board detection code in this driver.
122 * By default it is disabled, but for those that want to try it out,
123 * then set the define below to be 1.
125 #define STLI_EISAPROBE 0
127 /*****************************************************************************/
130 * Define some important driver characteristics. Device major numbers
131 * allocated as per Linux Device Registry.
133 #ifndef STL_SIOMEMMAJOR
134 #define STL_SIOMEMMAJOR 28
136 #ifndef STL_SERIALMAJOR
137 #define STL_SERIALMAJOR 24
139 #ifndef STL_CALLOUTMAJOR
140 #define STL_CALLOUTMAJOR 25
143 /*****************************************************************************/
146 * Define our local driver identity first. Set up stuff to deal with
147 * all the local structures required by a serial tty driver.
149 static char *stli_drvtitle
= "Stallion Intelligent Multiport Serial Driver";
150 static char *stli_drvname
= "istallion";
151 static char *stli_drvversion
= "5.6.0";
152 static char *stli_serialname
= "ttyE";
154 static struct tty_driver
*stli_serial
;
155 static const struct tty_port_operations stli_port_ops
;
157 #define STLI_TXBUFSIZE 4096
160 * Use a fast local buffer for cooked characters. Typically a whole
161 * bunch of cooked characters come in for a port, 1 at a time. So we
162 * save those up into a local buffer, then write out the whole lot
163 * with a large memcpy. Just use 1 buffer for all ports, since its
164 * use it is only need for short periods of time by each port.
166 static char *stli_txcookbuf
;
167 static int stli_txcooksize
;
168 static int stli_txcookrealsize
;
169 static struct tty_struct
*stli_txcooktty
;
172 * Define a local default termios struct. All ports will be created
173 * with this termios initially. Basically all it defines is a raw port
174 * at 9600 baud, 8 data bits, no parity, 1 stop bit.
176 static struct ktermios stli_deftermios
= {
177 .c_cflag
= (B9600
| CS8
| CREAD
| HUPCL
| CLOCAL
),
184 * Define global stats structures. Not used often, and can be
185 * re-used for each stats call.
187 static comstats_t stli_comstats
;
188 static combrd_t stli_brdstats
;
189 static struct asystats stli_cdkstats
;
191 /*****************************************************************************/
193 static DEFINE_MUTEX(stli_brdslock
);
194 static struct stlibrd
*stli_brds
[STL_MAXBRDS
];
196 static int stli_shared
;
199 * Per board state flags. Used with the state field of the board struct.
200 * Not really much here... All we need to do is keep track of whether
201 * the board has been detected, and whether it is actually running a slave
204 #define BST_FOUND 0x1
205 #define BST_STARTED 0x2
206 #define BST_PROBED 0x4
209 * Define the set of port state flags. These are marked for internal
210 * state purposes only, usually to do with the state of communications
211 * with the slave. Most of them need to be updated atomically, so always
212 * use the bit setting operations (unless protected by cli/sti).
214 #define ST_INITIALIZING 1
220 #define ST_DOFLUSHRX 7
221 #define ST_DOFLUSHTX 8
224 #define ST_GETSIGS 11
227 * Define an array of board names as printable strings. Handy for
228 * referencing boards when printing trace and stuff.
230 static char *stli_brdnames
[] = {
263 /*****************************************************************************/
266 * Define some string labels for arguments passed from the module
267 * load line. These allow for easy board definitions, and easy
268 * modification of the io, memory and irq resoucres.
271 static char *board0
[8];
272 static char *board1
[8];
273 static char *board2
[8];
274 static char *board3
[8];
276 static char **stli_brdsp
[] = {
284 * Define a set of common board names, and types. This is used to
285 * parse any module arguments.
288 static struct stlibrdtype
{
292 { "stallion", BRD_STALLION
},
293 { "1", BRD_STALLION
},
294 { "brumby", BRD_BRUMBY
},
295 { "brumby4", BRD_BRUMBY
},
296 { "brumby/4", BRD_BRUMBY
},
297 { "brumby-4", BRD_BRUMBY
},
298 { "brumby8", BRD_BRUMBY
},
299 { "brumby/8", BRD_BRUMBY
},
300 { "brumby-8", BRD_BRUMBY
},
301 { "brumby16", BRD_BRUMBY
},
302 { "brumby/16", BRD_BRUMBY
},
303 { "brumby-16", BRD_BRUMBY
},
305 { "onboard2", BRD_ONBOARD2
},
306 { "onboard-2", BRD_ONBOARD2
},
307 { "onboard/2", BRD_ONBOARD2
},
308 { "onboard-mc", BRD_ONBOARD2
},
309 { "onboard/mc", BRD_ONBOARD2
},
310 { "onboard-mca", BRD_ONBOARD2
},
311 { "onboard/mca", BRD_ONBOARD2
},
312 { "3", BRD_ONBOARD2
},
313 { "onboard", BRD_ONBOARD
},
314 { "onboardat", BRD_ONBOARD
},
315 { "4", BRD_ONBOARD
},
316 { "onboarde", BRD_ONBOARDE
},
317 { "onboard-e", BRD_ONBOARDE
},
318 { "onboard/e", BRD_ONBOARDE
},
319 { "onboard-ei", BRD_ONBOARDE
},
320 { "onboard/ei", BRD_ONBOARDE
},
321 { "7", BRD_ONBOARDE
},
323 { "ecpat", BRD_ECP
},
324 { "ec8/64", BRD_ECP
},
325 { "ec8/64-at", BRD_ECP
},
326 { "ec8/64-isa", BRD_ECP
},
328 { "ecpe", BRD_ECPE
},
329 { "ecpei", BRD_ECPE
},
330 { "ec8/64-e", BRD_ECPE
},
331 { "ec8/64-ei", BRD_ECPE
},
333 { "ecpmc", BRD_ECPMC
},
334 { "ec8/64-mc", BRD_ECPMC
},
335 { "ec8/64-mca", BRD_ECPMC
},
337 { "ecppci", BRD_ECPPCI
},
338 { "ec/ra", BRD_ECPPCI
},
339 { "ec/ra-pc", BRD_ECPPCI
},
340 { "ec/ra-pci", BRD_ECPPCI
},
341 { "29", BRD_ECPPCI
},
345 * Define the module agruments.
347 MODULE_AUTHOR("Greg Ungerer");
348 MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver");
349 MODULE_LICENSE("GPL");
352 module_param_array(board0
, charp
, NULL
, 0);
353 MODULE_PARM_DESC(board0
, "Board 0 config -> name[,ioaddr[,memaddr]");
354 module_param_array(board1
, charp
, NULL
, 0);
355 MODULE_PARM_DESC(board1
, "Board 1 config -> name[,ioaddr[,memaddr]");
356 module_param_array(board2
, charp
, NULL
, 0);
357 MODULE_PARM_DESC(board2
, "Board 2 config -> name[,ioaddr[,memaddr]");
358 module_param_array(board3
, charp
, NULL
, 0);
359 MODULE_PARM_DESC(board3
, "Board 3 config -> name[,ioaddr[,memaddr]");
361 #if STLI_EISAPROBE != 0
363 * Set up a default memory address table for EISA board probing.
364 * The default addresses are all bellow 1Mbyte, which has to be the
365 * case anyway. They should be safe, since we only read values from
366 * them, and interrupts are disabled while we do it. If the higher
367 * memory support is compiled in then we also try probing around
368 * the 1Gb, 2Gb and 3Gb areas as well...
370 static unsigned long stli_eisamemprobeaddrs
[] = {
371 0xc0000, 0xd0000, 0xe0000, 0xf0000,
372 0x80000000, 0x80010000, 0x80020000, 0x80030000,
373 0x40000000, 0x40010000, 0x40020000, 0x40030000,
374 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000,
375 0xff000000, 0xff010000, 0xff020000, 0xff030000,
378 static int stli_eisamempsize
= ARRAY_SIZE(stli_eisamemprobeaddrs
);
382 * Define the Stallion PCI vendor and device IDs.
384 #ifndef PCI_DEVICE_ID_ECRA
385 #define PCI_DEVICE_ID_ECRA 0x0004
388 static struct pci_device_id istallion_pci_tbl
[] = {
389 { PCI_DEVICE(PCI_VENDOR_ID_STALLION
, PCI_DEVICE_ID_ECRA
), },
392 MODULE_DEVICE_TABLE(pci
, istallion_pci_tbl
);
394 static struct pci_driver stli_pcidriver
;
396 /*****************************************************************************/
399 * Hardware configuration info for ECP boards. These defines apply
400 * to the directly accessible io ports of the ECP. There is a set of
401 * defines for each ECP board type, ISA, EISA, MCA and PCI.
405 #define ECP_MEMSIZE (128 * 1024)
406 #define ECP_PCIMEMSIZE (256 * 1024)
408 #define ECP_ATPAGESIZE (4 * 1024)
409 #define ECP_MCPAGESIZE (4 * 1024)
410 #define ECP_EIPAGESIZE (64 * 1024)
411 #define ECP_PCIPAGESIZE (64 * 1024)
413 #define STL_EISAID 0x8c4e
416 * Important defines for the ISA class of ECP board.
419 #define ECP_ATCONFR 1
420 #define ECP_ATMEMAR 2
421 #define ECP_ATMEMPR 3
422 #define ECP_ATSTOP 0x1
423 #define ECP_ATINTENAB 0x10
424 #define ECP_ATENABLE 0x20
425 #define ECP_ATDISABLE 0x00
426 #define ECP_ATADDRMASK 0x3f000
427 #define ECP_ATADDRSHFT 12
430 * Important defines for the EISA class of ECP board.
433 #define ECP_EIMEMARL 1
434 #define ECP_EICONFR 2
435 #define ECP_EIMEMARH 3
436 #define ECP_EIENABLE 0x1
437 #define ECP_EIDISABLE 0x0
438 #define ECP_EISTOP 0x4
439 #define ECP_EIEDGE 0x00
440 #define ECP_EILEVEL 0x80
441 #define ECP_EIADDRMASKL 0x00ff0000
442 #define ECP_EIADDRSHFTL 16
443 #define ECP_EIADDRMASKH 0xff000000
444 #define ECP_EIADDRSHFTH 24
445 #define ECP_EIBRDENAB 0xc84
447 #define ECP_EISAID 0x4
450 * Important defines for the Micro-channel class of ECP board.
451 * (It has a lot in common with the ISA boards.)
454 #define ECP_MCCONFR 1
455 #define ECP_MCSTOP 0x20
456 #define ECP_MCENABLE 0x80
457 #define ECP_MCDISABLE 0x00
460 * Important defines for the PCI class of ECP board.
461 * (It has a lot in common with the other ECP boards.)
463 #define ECP_PCIIREG 0
464 #define ECP_PCICONFR 1
465 #define ECP_PCISTOP 0x01
468 * Hardware configuration info for ONboard and Brumby boards. These
469 * defines apply to the directly accessible io ports of these boards.
471 #define ONB_IOSIZE 16
472 #define ONB_MEMSIZE (64 * 1024)
473 #define ONB_ATPAGESIZE (64 * 1024)
474 #define ONB_MCPAGESIZE (64 * 1024)
475 #define ONB_EIMEMSIZE (128 * 1024)
476 #define ONB_EIPAGESIZE (64 * 1024)
479 * Important defines for the ISA class of ONboard board.
482 #define ONB_ATMEMAR 1
483 #define ONB_ATCONFR 2
484 #define ONB_ATSTOP 0x4
485 #define ONB_ATENABLE 0x01
486 #define ONB_ATDISABLE 0x00
487 #define ONB_ATADDRMASK 0xff0000
488 #define ONB_ATADDRSHFT 16
490 #define ONB_MEMENABLO 0
491 #define ONB_MEMENABHI 0x02
494 * Important defines for the EISA class of ONboard board.
497 #define ONB_EIMEMARL 1
498 #define ONB_EICONFR 2
499 #define ONB_EIMEMARH 3
500 #define ONB_EIENABLE 0x1
501 #define ONB_EIDISABLE 0x0
502 #define ONB_EISTOP 0x4
503 #define ONB_EIEDGE 0x00
504 #define ONB_EILEVEL 0x80
505 #define ONB_EIADDRMASKL 0x00ff0000
506 #define ONB_EIADDRSHFTL 16
507 #define ONB_EIADDRMASKH 0xff000000
508 #define ONB_EIADDRSHFTH 24
509 #define ONB_EIBRDENAB 0xc84
511 #define ONB_EISAID 0x1
514 * Important defines for the Brumby boards. They are pretty simple,
515 * there is not much that is programmably configurable.
517 #define BBY_IOSIZE 16
518 #define BBY_MEMSIZE (64 * 1024)
519 #define BBY_PAGESIZE (16 * 1024)
522 #define BBY_ATCONFR 1
523 #define BBY_ATSTOP 0x4
526 * Important defines for the Stallion boards. They are pretty simple,
527 * there is not much that is programmably configurable.
529 #define STAL_IOSIZE 16
530 #define STAL_MEMSIZE (64 * 1024)
531 #define STAL_PAGESIZE (64 * 1024)
534 * Define the set of status register values for EasyConnection panels.
535 * The signature will return with the status value for each panel. From
536 * this we can determine what is attached to the board - before we have
537 * actually down loaded any code to it.
539 #define ECH_PNLSTATUS 2
540 #define ECH_PNL16PORT 0x20
541 #define ECH_PNLIDMASK 0x07
542 #define ECH_PNLXPID 0x40
543 #define ECH_PNLINTRPEND 0x80
546 * Define some macros to do things to the board. Even those these boards
547 * are somewhat related there is often significantly different ways of
548 * doing some operation on it (like enable, paging, reset, etc). So each
549 * board class has a set of functions which do the commonly required
550 * operations. The macros below basically just call these functions,
551 * generally checking for a NULL function - which means that the board
552 * needs nothing done to it to achieve this operation!
554 #define EBRDINIT(brdp) \
555 if (brdp->init != NULL) \
558 #define EBRDENABLE(brdp) \
559 if (brdp->enable != NULL) \
560 (* brdp->enable)(brdp);
562 #define EBRDDISABLE(brdp) \
563 if (brdp->disable != NULL) \
564 (* brdp->disable)(brdp);
566 #define EBRDINTR(brdp) \
567 if (brdp->intr != NULL) \
568 (* brdp->intr)(brdp);
570 #define EBRDRESET(brdp) \
571 if (brdp->reset != NULL) \
572 (* brdp->reset)(brdp);
574 #define EBRDGETMEMPTR(brdp,offset) \
575 (* brdp->getmemptr)(brdp, offset, __LINE__)
578 * Define the maximal baud rate, and the default baud base for ports.
580 #define STL_MAXBAUD 460800
581 #define STL_BAUDBASE 115200
582 #define STL_CLOSEDELAY (5 * HZ / 10)
584 /*****************************************************************************/
587 * Define macros to extract a brd or port number from a minor number.
589 #define MINOR2BRD(min) (((min) & 0xc0) >> 6)
590 #define MINOR2PORT(min) ((min) & 0x3f)
592 /*****************************************************************************/
595 * Prototype all functions in this driver!
598 static int stli_parsebrd(struct stlconf
*confp
, char **argp
);
599 static int stli_open(struct tty_struct
*tty
, struct file
*filp
);
600 static void stli_close(struct tty_struct
*tty
, struct file
*filp
);
601 static int stli_write(struct tty_struct
*tty
, const unsigned char *buf
, int count
);
602 static int stli_putchar(struct tty_struct
*tty
, unsigned char ch
);
603 static void stli_flushchars(struct tty_struct
*tty
);
604 static int stli_writeroom(struct tty_struct
*tty
);
605 static int stli_charsinbuffer(struct tty_struct
*tty
);
606 static int stli_ioctl(struct tty_struct
*tty
, struct file
*file
, unsigned int cmd
, unsigned long arg
);
607 static void stli_settermios(struct tty_struct
*tty
, struct ktermios
*old
);
608 static void stli_throttle(struct tty_struct
*tty
);
609 static void stli_unthrottle(struct tty_struct
*tty
);
610 static void stli_stop(struct tty_struct
*tty
);
611 static void stli_start(struct tty_struct
*tty
);
612 static void stli_flushbuffer(struct tty_struct
*tty
);
613 static int stli_breakctl(struct tty_struct
*tty
, int state
);
614 static void stli_waituntilsent(struct tty_struct
*tty
, int timeout
);
615 static void stli_sendxchar(struct tty_struct
*tty
, char ch
);
616 static void stli_hangup(struct tty_struct
*tty
);
618 static int stli_brdinit(struct stlibrd
*brdp
);
619 static int stli_startbrd(struct stlibrd
*brdp
);
620 static ssize_t
stli_memread(struct file
*fp
, char __user
*buf
, size_t count
, loff_t
*offp
);
621 static ssize_t
stli_memwrite(struct file
*fp
, const char __user
*buf
, size_t count
, loff_t
*offp
);
622 static int stli_memioctl(struct inode
*ip
, struct file
*fp
, unsigned int cmd
, unsigned long arg
);
623 static void stli_brdpoll(struct stlibrd
*brdp
, cdkhdr_t __iomem
*hdrp
);
624 static void stli_poll(unsigned long arg
);
625 static int stli_hostcmd(struct stlibrd
*brdp
, struct stliport
*portp
);
626 static int stli_initopen(struct tty_struct
*tty
, struct stlibrd
*brdp
, struct stliport
*portp
);
627 static int stli_rawopen(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long arg
, int wait
);
628 static int stli_rawclose(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long arg
, int wait
);
629 static int stli_setport(struct tty_struct
*tty
);
630 static int stli_cmdwait(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
);
631 static void stli_sendcmd(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
);
632 static void __stli_sendcmd(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
);
633 static void stli_dodelaycmd(struct stliport
*portp
, cdkctrl_t __iomem
*cp
);
634 static void stli_mkasyport(struct tty_struct
*tty
, struct stliport
*portp
, asyport_t
*pp
, struct ktermios
*tiosp
);
635 static void stli_mkasysigs(asysigs_t
*sp
, int dtr
, int rts
);
636 static long stli_mktiocm(unsigned long sigvalue
);
637 static void stli_read(struct stlibrd
*brdp
, struct stliport
*portp
);
638 static int stli_getserial(struct stliport
*portp
, struct serial_struct __user
*sp
);
639 static int stli_setserial(struct tty_struct
*tty
, struct serial_struct __user
*sp
);
640 static int stli_getbrdstats(combrd_t __user
*bp
);
641 static int stli_getportstats(struct tty_struct
*tty
, struct stliport
*portp
, comstats_t __user
*cp
);
642 static int stli_portcmdstats(struct tty_struct
*tty
, struct stliport
*portp
);
643 static int stli_clrportstats(struct stliport
*portp
, comstats_t __user
*cp
);
644 static int stli_getportstruct(struct stliport __user
*arg
);
645 static int stli_getbrdstruct(struct stlibrd __user
*arg
);
646 static struct stlibrd
*stli_allocbrd(void);
648 static void stli_ecpinit(struct stlibrd
*brdp
);
649 static void stli_ecpenable(struct stlibrd
*brdp
);
650 static void stli_ecpdisable(struct stlibrd
*brdp
);
651 static void __iomem
*stli_ecpgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
);
652 static void stli_ecpreset(struct stlibrd
*brdp
);
653 static void stli_ecpintr(struct stlibrd
*brdp
);
654 static void stli_ecpeiinit(struct stlibrd
*brdp
);
655 static void stli_ecpeienable(struct stlibrd
*brdp
);
656 static void stli_ecpeidisable(struct stlibrd
*brdp
);
657 static void __iomem
*stli_ecpeigetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
);
658 static void stli_ecpeireset(struct stlibrd
*brdp
);
659 static void stli_ecpmcenable(struct stlibrd
*brdp
);
660 static void stli_ecpmcdisable(struct stlibrd
*brdp
);
661 static void __iomem
*stli_ecpmcgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
);
662 static void stli_ecpmcreset(struct stlibrd
*brdp
);
663 static void stli_ecppciinit(struct stlibrd
*brdp
);
664 static void __iomem
*stli_ecppcigetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
);
665 static void stli_ecppcireset(struct stlibrd
*brdp
);
667 static void stli_onbinit(struct stlibrd
*brdp
);
668 static void stli_onbenable(struct stlibrd
*brdp
);
669 static void stli_onbdisable(struct stlibrd
*brdp
);
670 static void __iomem
*stli_onbgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
);
671 static void stli_onbreset(struct stlibrd
*brdp
);
672 static void stli_onbeinit(struct stlibrd
*brdp
);
673 static void stli_onbeenable(struct stlibrd
*brdp
);
674 static void stli_onbedisable(struct stlibrd
*brdp
);
675 static void __iomem
*stli_onbegetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
);
676 static void stli_onbereset(struct stlibrd
*brdp
);
677 static void stli_bbyinit(struct stlibrd
*brdp
);
678 static void __iomem
*stli_bbygetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
);
679 static void stli_bbyreset(struct stlibrd
*brdp
);
680 static void stli_stalinit(struct stlibrd
*brdp
);
681 static void __iomem
*stli_stalgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
);
682 static void stli_stalreset(struct stlibrd
*brdp
);
684 static struct stliport
*stli_getport(unsigned int brdnr
, unsigned int panelnr
, unsigned int portnr
);
686 static int stli_initecp(struct stlibrd
*brdp
);
687 static int stli_initonb(struct stlibrd
*brdp
);
688 #if STLI_EISAPROBE != 0
689 static int stli_eisamemprobe(struct stlibrd
*brdp
);
691 static int stli_initports(struct stlibrd
*brdp
);
693 /*****************************************************************************/
696 * Define the driver info for a user level shared memory device. This
697 * device will work sort of like the /dev/kmem device - except that it
698 * will give access to the shared memory on the Stallion intelligent
699 * board. This is also a very useful debugging tool.
701 static const struct file_operations stli_fsiomem
= {
702 .owner
= THIS_MODULE
,
703 .read
= stli_memread
,
704 .write
= stli_memwrite
,
705 .ioctl
= stli_memioctl
,
708 /*****************************************************************************/
711 * Define a timer_list entry for our poll routine. The slave board
712 * is polled every so often to see if anything needs doing. This is
713 * much cheaper on host cpu than using interrupts. It turns out to
714 * not increase character latency by much either...
716 static DEFINE_TIMER(stli_timerlist
, stli_poll
, 0, 0);
718 static int stli_timeron
;
721 * Define the calculation for the timeout routine.
723 #define STLI_TIMEOUT (jiffies + 1)
725 /*****************************************************************************/
727 static struct class *istallion_class
;
729 static void stli_cleanup_ports(struct stlibrd
*brdp
)
731 struct stliport
*portp
;
733 struct tty_struct
*tty
;
735 for (j
= 0; j
< STL_MAXPORTS
; j
++) {
736 portp
= brdp
->ports
[j
];
738 tty
= tty_port_tty_get(&portp
->port
);
748 /*****************************************************************************/
751 * Parse the supplied argument string, into the board conf struct.
754 static int stli_parsebrd(struct stlconf
*confp
, char **argp
)
759 if (argp
[0] == NULL
|| *argp
[0] == 0)
762 for (sp
= argp
[0], i
= 0; ((*sp
!= 0) && (i
< 25)); sp
++, i
++)
765 for (i
= 0; i
< ARRAY_SIZE(stli_brdstr
); i
++) {
766 if (strcmp(stli_brdstr
[i
].name
, argp
[0]) == 0)
769 if (i
== ARRAY_SIZE(stli_brdstr
)) {
770 printk(KERN_WARNING
"istallion: unknown board name, %s?\n", argp
[0]);
774 confp
->brdtype
= stli_brdstr
[i
].type
;
775 if (argp
[1] != NULL
&& *argp
[1] != 0)
776 confp
->ioaddr1
= simple_strtoul(argp
[1], NULL
, 0);
777 if (argp
[2] != NULL
&& *argp
[2] != 0)
778 confp
->memaddr
= simple_strtoul(argp
[2], NULL
, 0);
782 /*****************************************************************************/
784 static int stli_open(struct tty_struct
*tty
, struct file
*filp
)
786 struct stlibrd
*brdp
;
787 struct stliport
*portp
;
788 struct tty_port
*port
;
789 unsigned int minordev
, brdnr
, portnr
;
792 minordev
= tty
->index
;
793 brdnr
= MINOR2BRD(minordev
);
794 if (brdnr
>= stli_nrbrds
)
796 brdp
= stli_brds
[brdnr
];
799 if ((brdp
->state
& BST_STARTED
) == 0)
801 portnr
= MINOR2PORT(minordev
);
802 if (portnr
> brdp
->nrports
)
805 portp
= brdp
->ports
[portnr
];
808 if (portp
->devnr
< 1)
813 * On the first open of the device setup the port hardware, and
814 * initialize the per port data structure. Since initializing the port
815 * requires several commands to the board we will need to wait for any
816 * other open that is already initializing the port.
820 tty_port_tty_set(port
, tty
);
821 tty
->driver_data
= portp
;
824 wait_event_interruptible(portp
->raw_wait
,
825 !test_bit(ST_INITIALIZING
, &portp
->state
));
826 if (signal_pending(current
))
829 if ((portp
->port
.flags
& ASYNC_INITIALIZED
) == 0) {
830 set_bit(ST_INITIALIZING
, &portp
->state
);
831 if ((rc
= stli_initopen(tty
, brdp
, portp
)) >= 0) {
833 port
->flags
|= ASYNC_INITIALIZED
;
834 clear_bit(TTY_IO_ERROR
, &tty
->flags
);
836 clear_bit(ST_INITIALIZING
, &portp
->state
);
837 wake_up_interruptible(&portp
->raw_wait
);
841 return tty_port_block_til_ready(&portp
->port
, tty
, filp
);
844 /*****************************************************************************/
846 static void stli_close(struct tty_struct
*tty
, struct file
*filp
)
848 struct stlibrd
*brdp
;
849 struct stliport
*portp
;
850 struct tty_port
*port
;
853 portp
= tty
->driver_data
;
858 if (tty_port_close_start(port
, tty
, filp
) == 0)
862 * May want to wait for data to drain before closing. The BUSY flag
863 * keeps track of whether we are still transmitting or not. It is
864 * updated by messages from the slave - indicating when all chars
865 * really have drained.
867 spin_lock_irqsave(&stli_lock
, flags
);
868 if (tty
== stli_txcooktty
)
869 stli_flushchars(tty
);
870 spin_unlock_irqrestore(&stli_lock
, flags
);
872 /* We end up doing this twice for the moment. This needs looking at
873 eventually. Note we still use portp->closing_wait as a result */
874 if (portp
->closing_wait
!= ASYNC_CLOSING_WAIT_NONE
)
875 tty_wait_until_sent(tty
, portp
->closing_wait
);
877 /* FIXME: port locking here needs attending to */
878 port
->flags
&= ~ASYNC_INITIALIZED
;
880 brdp
= stli_brds
[portp
->brdnr
];
881 stli_rawclose(brdp
, portp
, 0, 0);
882 if (tty
->termios
->c_cflag
& HUPCL
) {
883 stli_mkasysigs(&portp
->asig
, 0, 0);
884 if (test_bit(ST_CMDING
, &portp
->state
))
885 set_bit(ST_DOSIGS
, &portp
->state
);
887 stli_sendcmd(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
888 sizeof(asysigs_t
), 0);
890 clear_bit(ST_TXBUSY
, &portp
->state
);
891 clear_bit(ST_RXSTOP
, &portp
->state
);
892 set_bit(TTY_IO_ERROR
, &tty
->flags
);
893 tty_ldisc_flush(tty
);
894 set_bit(ST_DOFLUSHRX
, &portp
->state
);
895 stli_flushbuffer(tty
);
897 tty_port_close_end(port
, tty
);
898 tty_port_tty_set(port
, NULL
);
901 /*****************************************************************************/
904 * Carry out first open operations on a port. This involves a number of
905 * commands to be sent to the slave. We need to open the port, set the
906 * notification events, set the initial port settings, get and set the
907 * initial signal values. We sleep and wait in between each one. But
908 * this still all happens pretty quickly.
911 static int stli_initopen(struct tty_struct
*tty
,
912 struct stlibrd
*brdp
, struct stliport
*portp
)
918 if ((rc
= stli_rawopen(brdp
, portp
, 0, 1)) < 0)
921 memset(&nt
, 0, sizeof(asynotify_t
));
922 nt
.data
= (DT_TXLOW
| DT_TXEMPTY
| DT_RXBUSY
| DT_RXBREAK
);
924 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETNOTIFY
, &nt
,
925 sizeof(asynotify_t
), 0)) < 0)
928 stli_mkasyport(tty
, portp
, &aport
, tty
->termios
);
929 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETPORT
, &aport
,
930 sizeof(asyport_t
), 0)) < 0)
933 set_bit(ST_GETSIGS
, &portp
->state
);
934 if ((rc
= stli_cmdwait(brdp
, portp
, A_GETSIGNALS
, &portp
->asig
,
935 sizeof(asysigs_t
), 1)) < 0)
937 if (test_and_clear_bit(ST_GETSIGS
, &portp
->state
))
938 portp
->sigs
= stli_mktiocm(portp
->asig
.sigvalue
);
939 stli_mkasysigs(&portp
->asig
, 1, 1);
940 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
941 sizeof(asysigs_t
), 0)) < 0)
947 /*****************************************************************************/
950 * Send an open message to the slave. This will sleep waiting for the
951 * acknowledgement, so must have user context. We need to co-ordinate
952 * with close events here, since we don't want open and close events
956 static int stli_rawopen(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long arg
, int wait
)
958 cdkhdr_t __iomem
*hdrp
;
959 cdkctrl_t __iomem
*cp
;
960 unsigned char __iomem
*bits
;
965 * Send a message to the slave to open this port.
969 * Slave is already closing this port. This can happen if a hangup
970 * occurs on this port. So we must wait until it is complete. The
971 * order of opens and closes may not be preserved across shared
972 * memory, so we must wait until it is complete.
974 wait_event_interruptible(portp
->raw_wait
,
975 !test_bit(ST_CLOSING
, &portp
->state
));
976 if (signal_pending(current
)) {
981 * Everything is ready now, so write the open message into shared
982 * memory. Once the message is in set the service bits to say that
983 * this port wants service.
985 spin_lock_irqsave(&brd_lock
, flags
);
987 cp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->ctrl
;
988 writel(arg
, &cp
->openarg
);
989 writeb(1, &cp
->open
);
990 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
991 bits
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
+
993 writeb(readb(bits
) | portp
->portbit
, bits
);
997 spin_unlock_irqrestore(&brd_lock
, flags
);
1002 * Slave is in action, so now we must wait for the open acknowledgment
1006 set_bit(ST_OPENING
, &portp
->state
);
1007 spin_unlock_irqrestore(&brd_lock
, flags
);
1009 wait_event_interruptible(portp
->raw_wait
,
1010 !test_bit(ST_OPENING
, &portp
->state
));
1011 if (signal_pending(current
))
1014 if ((rc
== 0) && (portp
->rc
!= 0))
1019 /*****************************************************************************/
1022 * Send a close message to the slave. Normally this will sleep waiting
1023 * for the acknowledgement, but if wait parameter is 0 it will not. If
1024 * wait is true then must have user context (to sleep).
1027 static int stli_rawclose(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long arg
, int wait
)
1029 cdkhdr_t __iomem
*hdrp
;
1030 cdkctrl_t __iomem
*cp
;
1031 unsigned char __iomem
*bits
;
1032 unsigned long flags
;
1036 * Slave is already closing this port. This can happen if a hangup
1037 * occurs on this port.
1040 wait_event_interruptible(portp
->raw_wait
,
1041 !test_bit(ST_CLOSING
, &portp
->state
));
1042 if (signal_pending(current
)) {
1043 return -ERESTARTSYS
;
1048 * Write the close command into shared memory.
1050 spin_lock_irqsave(&brd_lock
, flags
);
1052 cp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->ctrl
;
1053 writel(arg
, &cp
->closearg
);
1054 writeb(1, &cp
->close
);
1055 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1056 bits
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
+
1058 writeb(readb(bits
) |portp
->portbit
, bits
);
1061 set_bit(ST_CLOSING
, &portp
->state
);
1062 spin_unlock_irqrestore(&brd_lock
, flags
);
1068 * Slave is in action, so now we must wait for the open acknowledgment
1072 wait_event_interruptible(portp
->raw_wait
,
1073 !test_bit(ST_CLOSING
, &portp
->state
));
1074 if (signal_pending(current
))
1077 if ((rc
== 0) && (portp
->rc
!= 0))
1082 /*****************************************************************************/
1085 * Send a command to the slave and wait for the response. This must
1086 * have user context (it sleeps). This routine is generic in that it
1087 * can send any type of command. Its purpose is to wait for that command
1088 * to complete (as opposed to initiating the command then returning).
1091 static int stli_cmdwait(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
)
1093 wait_event_interruptible(portp
->raw_wait
,
1094 !test_bit(ST_CMDING
, &portp
->state
));
1095 if (signal_pending(current
))
1096 return -ERESTARTSYS
;
1098 stli_sendcmd(brdp
, portp
, cmd
, arg
, size
, copyback
);
1100 wait_event_interruptible(portp
->raw_wait
,
1101 !test_bit(ST_CMDING
, &portp
->state
));
1102 if (signal_pending(current
))
1103 return -ERESTARTSYS
;
1110 /*****************************************************************************/
1113 * Send the termios settings for this port to the slave. This sleeps
1114 * waiting for the command to complete - so must have user context.
1117 static int stli_setport(struct tty_struct
*tty
)
1119 struct stliport
*portp
= tty
->driver_data
;
1120 struct stlibrd
*brdp
;
1125 if (portp
->brdnr
>= stli_nrbrds
)
1127 brdp
= stli_brds
[portp
->brdnr
];
1131 stli_mkasyport(tty
, portp
, &aport
, tty
->termios
);
1132 return(stli_cmdwait(brdp
, portp
, A_SETPORT
, &aport
, sizeof(asyport_t
), 0));
1135 /*****************************************************************************/
1137 static int stli_carrier_raised(struct tty_port
*port
)
1139 struct stliport
*portp
= container_of(port
, struct stliport
, port
);
1140 return (portp
->sigs
& TIOCM_CD
) ? 1 : 0;
1143 static void stli_dtr_rts(struct tty_port
*port
, int on
)
1145 struct stliport
*portp
= container_of(port
, struct stliport
, port
);
1146 struct stlibrd
*brdp
= stli_brds
[portp
->brdnr
];
1147 stli_mkasysigs(&portp
->asig
, on
, on
);
1148 if (stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
1149 sizeof(asysigs_t
), 0) < 0)
1150 printk(KERN_WARNING
"istallion: dtr set failed.\n");
1154 /*****************************************************************************/
1157 * Write routine. Take the data and put it in the shared memory ring
1158 * queue. If port is not already sending chars then need to mark the
1159 * service bits for this port.
1162 static int stli_write(struct tty_struct
*tty
, const unsigned char *buf
, int count
)
1164 cdkasy_t __iomem
*ap
;
1165 cdkhdr_t __iomem
*hdrp
;
1166 unsigned char __iomem
*bits
;
1167 unsigned char __iomem
*shbuf
;
1168 unsigned char *chbuf
;
1169 struct stliport
*portp
;
1170 struct stlibrd
*brdp
;
1171 unsigned int len
, stlen
, head
, tail
, size
;
1172 unsigned long flags
;
1174 if (tty
== stli_txcooktty
)
1175 stli_flushchars(tty
);
1176 portp
= tty
->driver_data
;
1179 if (portp
->brdnr
>= stli_nrbrds
)
1181 brdp
= stli_brds
[portp
->brdnr
];
1184 chbuf
= (unsigned char *) buf
;
1187 * All data is now local, shove as much as possible into shared memory.
1189 spin_lock_irqsave(&brd_lock
, flags
);
1191 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1192 head
= (unsigned int) readw(&ap
->txq
.head
);
1193 tail
= (unsigned int) readw(&ap
->txq
.tail
);
1194 if (tail
!= ((unsigned int) readw(&ap
->txq
.tail
)))
1195 tail
= (unsigned int) readw(&ap
->txq
.tail
);
1196 size
= portp
->txsize
;
1198 len
= size
- (head
- tail
) - 1;
1199 stlen
= size
- head
;
1201 len
= tail
- head
- 1;
1205 len
= min(len
, (unsigned int)count
);
1207 shbuf
= (char __iomem
*) EBRDGETMEMPTR(brdp
, portp
->txoffset
);
1210 stlen
= min(len
, stlen
);
1211 memcpy_toio(shbuf
+ head
, chbuf
, stlen
);
1222 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1223 writew(head
, &ap
->txq
.head
);
1224 if (test_bit(ST_TXBUSY
, &portp
->state
)) {
1225 if (readl(&ap
->changed
.data
) & DT_TXEMPTY
)
1226 writel(readl(&ap
->changed
.data
) & ~DT_TXEMPTY
, &ap
->changed
.data
);
1228 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1229 bits
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
+
1231 writeb(readb(bits
) | portp
->portbit
, bits
);
1232 set_bit(ST_TXBUSY
, &portp
->state
);
1234 spin_unlock_irqrestore(&brd_lock
, flags
);
1239 /*****************************************************************************/
1242 * Output a single character. We put it into a temporary local buffer
1243 * (for speed) then write out that buffer when the flushchars routine
1244 * is called. There is a safety catch here so that if some other port
1245 * writes chars before the current buffer has been, then we write them
1246 * first them do the new ports.
1249 static int stli_putchar(struct tty_struct
*tty
, unsigned char ch
)
1251 if (tty
!= stli_txcooktty
) {
1252 if (stli_txcooktty
!= NULL
)
1253 stli_flushchars(stli_txcooktty
);
1254 stli_txcooktty
= tty
;
1257 stli_txcookbuf
[stli_txcooksize
++] = ch
;
1261 /*****************************************************************************/
1264 * Transfer characters from the local TX cooking buffer to the board.
1265 * We sort of ignore the tty that gets passed in here. We rely on the
1266 * info stored with the TX cook buffer to tell us which port to flush
1267 * the data on. In any case we clean out the TX cook buffer, for re-use
1271 static void stli_flushchars(struct tty_struct
*tty
)
1273 cdkhdr_t __iomem
*hdrp
;
1274 unsigned char __iomem
*bits
;
1275 cdkasy_t __iomem
*ap
;
1276 struct tty_struct
*cooktty
;
1277 struct stliport
*portp
;
1278 struct stlibrd
*brdp
;
1279 unsigned int len
, stlen
, head
, tail
, size
, count
, cooksize
;
1281 unsigned char __iomem
*shbuf
;
1282 unsigned long flags
;
1284 cooksize
= stli_txcooksize
;
1285 cooktty
= stli_txcooktty
;
1286 stli_txcooksize
= 0;
1287 stli_txcookrealsize
= 0;
1288 stli_txcooktty
= NULL
;
1290 if (cooktty
== NULL
)
1297 portp
= tty
->driver_data
;
1300 if (portp
->brdnr
>= stli_nrbrds
)
1302 brdp
= stli_brds
[portp
->brdnr
];
1306 spin_lock_irqsave(&brd_lock
, flags
);
1309 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1310 head
= (unsigned int) readw(&ap
->txq
.head
);
1311 tail
= (unsigned int) readw(&ap
->txq
.tail
);
1312 if (tail
!= ((unsigned int) readw(&ap
->txq
.tail
)))
1313 tail
= (unsigned int) readw(&ap
->txq
.tail
);
1314 size
= portp
->txsize
;
1316 len
= size
- (head
- tail
) - 1;
1317 stlen
= size
- head
;
1319 len
= tail
- head
- 1;
1323 len
= min(len
, cooksize
);
1325 shbuf
= EBRDGETMEMPTR(brdp
, portp
->txoffset
);
1326 buf
= stli_txcookbuf
;
1329 stlen
= min(len
, stlen
);
1330 memcpy_toio(shbuf
+ head
, buf
, stlen
);
1341 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1342 writew(head
, &ap
->txq
.head
);
1344 if (test_bit(ST_TXBUSY
, &portp
->state
)) {
1345 if (readl(&ap
->changed
.data
) & DT_TXEMPTY
)
1346 writel(readl(&ap
->changed
.data
) & ~DT_TXEMPTY
, &ap
->changed
.data
);
1348 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1349 bits
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
+
1351 writeb(readb(bits
) | portp
->portbit
, bits
);
1352 set_bit(ST_TXBUSY
, &portp
->state
);
1355 spin_unlock_irqrestore(&brd_lock
, flags
);
1358 /*****************************************************************************/
1360 static int stli_writeroom(struct tty_struct
*tty
)
1362 cdkasyrq_t __iomem
*rp
;
1363 struct stliport
*portp
;
1364 struct stlibrd
*brdp
;
1365 unsigned int head
, tail
, len
;
1366 unsigned long flags
;
1368 if (tty
== stli_txcooktty
) {
1369 if (stli_txcookrealsize
!= 0) {
1370 len
= stli_txcookrealsize
- stli_txcooksize
;
1375 portp
= tty
->driver_data
;
1378 if (portp
->brdnr
>= stli_nrbrds
)
1380 brdp
= stli_brds
[portp
->brdnr
];
1384 spin_lock_irqsave(&brd_lock
, flags
);
1386 rp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->txq
;
1387 head
= (unsigned int) readw(&rp
->head
);
1388 tail
= (unsigned int) readw(&rp
->tail
);
1389 if (tail
!= ((unsigned int) readw(&rp
->tail
)))
1390 tail
= (unsigned int) readw(&rp
->tail
);
1391 len
= (head
>= tail
) ? (portp
->txsize
- (head
- tail
)) : (tail
- head
);
1394 spin_unlock_irqrestore(&brd_lock
, flags
);
1396 if (tty
== stli_txcooktty
) {
1397 stli_txcookrealsize
= len
;
1398 len
-= stli_txcooksize
;
1403 /*****************************************************************************/
1406 * Return the number of characters in the transmit buffer. Normally we
1407 * will return the number of chars in the shared memory ring queue.
1408 * We need to kludge around the case where the shared memory buffer is
1409 * empty but not all characters have drained yet, for this case just
1410 * return that there is 1 character in the buffer!
1413 static int stli_charsinbuffer(struct tty_struct
*tty
)
1415 cdkasyrq_t __iomem
*rp
;
1416 struct stliport
*portp
;
1417 struct stlibrd
*brdp
;
1418 unsigned int head
, tail
, len
;
1419 unsigned long flags
;
1421 if (tty
== stli_txcooktty
)
1422 stli_flushchars(tty
);
1423 portp
= tty
->driver_data
;
1426 if (portp
->brdnr
>= stli_nrbrds
)
1428 brdp
= stli_brds
[portp
->brdnr
];
1432 spin_lock_irqsave(&brd_lock
, flags
);
1434 rp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->txq
;
1435 head
= (unsigned int) readw(&rp
->head
);
1436 tail
= (unsigned int) readw(&rp
->tail
);
1437 if (tail
!= ((unsigned int) readw(&rp
->tail
)))
1438 tail
= (unsigned int) readw(&rp
->tail
);
1439 len
= (head
>= tail
) ? (head
- tail
) : (portp
->txsize
- (tail
- head
));
1440 if ((len
== 0) && test_bit(ST_TXBUSY
, &portp
->state
))
1443 spin_unlock_irqrestore(&brd_lock
, flags
);
1448 /*****************************************************************************/
1451 * Generate the serial struct info.
1454 static int stli_getserial(struct stliport
*portp
, struct serial_struct __user
*sp
)
1456 struct serial_struct sio
;
1457 struct stlibrd
*brdp
;
1459 memset(&sio
, 0, sizeof(struct serial_struct
));
1460 sio
.type
= PORT_UNKNOWN
;
1461 sio
.line
= portp
->portnr
;
1463 sio
.flags
= portp
->port
.flags
;
1464 sio
.baud_base
= portp
->baud_base
;
1465 sio
.close_delay
= portp
->port
.close_delay
;
1466 sio
.closing_wait
= portp
->closing_wait
;
1467 sio
.custom_divisor
= portp
->custom_divisor
;
1468 sio
.xmit_fifo_size
= 0;
1471 brdp
= stli_brds
[portp
->brdnr
];
1473 sio
.port
= brdp
->iobase
;
1475 return copy_to_user(sp
, &sio
, sizeof(struct serial_struct
)) ?
1479 /*****************************************************************************/
1482 * Set port according to the serial struct info.
1483 * At this point we do not do any auto-configure stuff, so we will
1484 * just quietly ignore any requests to change irq, etc.
1487 static int stli_setserial(struct tty_struct
*tty
, struct serial_struct __user
*sp
)
1489 struct serial_struct sio
;
1491 struct stliport
*portp
= tty
->driver_data
;
1493 if (copy_from_user(&sio
, sp
, sizeof(struct serial_struct
)))
1495 if (!capable(CAP_SYS_ADMIN
)) {
1496 if ((sio
.baud_base
!= portp
->baud_base
) ||
1497 (sio
.close_delay
!= portp
->port
.close_delay
) ||
1498 ((sio
.flags
& ~ASYNC_USR_MASK
) !=
1499 (portp
->port
.flags
& ~ASYNC_USR_MASK
)))
1503 portp
->port
.flags
= (portp
->port
.flags
& ~ASYNC_USR_MASK
) |
1504 (sio
.flags
& ASYNC_USR_MASK
);
1505 portp
->baud_base
= sio
.baud_base
;
1506 portp
->port
.close_delay
= sio
.close_delay
;
1507 portp
->closing_wait
= sio
.closing_wait
;
1508 portp
->custom_divisor
= sio
.custom_divisor
;
1510 if ((rc
= stli_setport(tty
)) < 0)
1515 /*****************************************************************************/
1517 static int stli_tiocmget(struct tty_struct
*tty
, struct file
*file
)
1519 struct stliport
*portp
= tty
->driver_data
;
1520 struct stlibrd
*brdp
;
1525 if (portp
->brdnr
>= stli_nrbrds
)
1527 brdp
= stli_brds
[portp
->brdnr
];
1530 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1533 if ((rc
= stli_cmdwait(brdp
, portp
, A_GETSIGNALS
,
1534 &portp
->asig
, sizeof(asysigs_t
), 1)) < 0)
1537 return stli_mktiocm(portp
->asig
.sigvalue
);
1540 static int stli_tiocmset(struct tty_struct
*tty
, struct file
*file
,
1541 unsigned int set
, unsigned int clear
)
1543 struct stliport
*portp
= tty
->driver_data
;
1544 struct stlibrd
*brdp
;
1545 int rts
= -1, dtr
= -1;
1549 if (portp
->brdnr
>= stli_nrbrds
)
1551 brdp
= stli_brds
[portp
->brdnr
];
1554 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1557 if (set
& TIOCM_RTS
)
1559 if (set
& TIOCM_DTR
)
1561 if (clear
& TIOCM_RTS
)
1563 if (clear
& TIOCM_DTR
)
1566 stli_mkasysigs(&portp
->asig
, dtr
, rts
);
1568 return stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
1569 sizeof(asysigs_t
), 0);
1572 static int stli_ioctl(struct tty_struct
*tty
, struct file
*file
, unsigned int cmd
, unsigned long arg
)
1574 struct stliport
*portp
;
1575 struct stlibrd
*brdp
;
1577 void __user
*argp
= (void __user
*)arg
;
1579 portp
= tty
->driver_data
;
1582 if (portp
->brdnr
>= stli_nrbrds
)
1584 brdp
= stli_brds
[portp
->brdnr
];
1588 if ((cmd
!= TIOCGSERIAL
) && (cmd
!= TIOCSSERIAL
) &&
1589 (cmd
!= COM_GETPORTSTATS
) && (cmd
!= COM_CLRPORTSTATS
)) {
1590 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1598 rc
= stli_getserial(portp
, argp
);
1601 rc
= stli_setserial(tty
, argp
);
1604 rc
= put_user(portp
->pflag
, (unsigned __user
*)argp
);
1607 if ((rc
= get_user(portp
->pflag
, (unsigned __user
*)argp
)) == 0)
1610 case COM_GETPORTSTATS
:
1611 rc
= stli_getportstats(tty
, portp
, argp
);
1613 case COM_CLRPORTSTATS
:
1614 rc
= stli_clrportstats(portp
, argp
);
1620 case TIOCSERGSTRUCT
:
1621 case TIOCSERGETMULTI
:
1622 case TIOCSERSETMULTI
:
1631 /*****************************************************************************/
1634 * This routine assumes that we have user context and can sleep.
1635 * Looks like it is true for the current ttys implementation..!!
1638 static void stli_settermios(struct tty_struct
*tty
, struct ktermios
*old
)
1640 struct stliport
*portp
;
1641 struct stlibrd
*brdp
;
1642 struct ktermios
*tiosp
;
1645 portp
= tty
->driver_data
;
1648 if (portp
->brdnr
>= stli_nrbrds
)
1650 brdp
= stli_brds
[portp
->brdnr
];
1654 tiosp
= tty
->termios
;
1656 stli_mkasyport(tty
, portp
, &aport
, tiosp
);
1657 stli_cmdwait(brdp
, portp
, A_SETPORT
, &aport
, sizeof(asyport_t
), 0);
1658 stli_mkasysigs(&portp
->asig
, ((tiosp
->c_cflag
& CBAUD
) ? 1 : 0), -1);
1659 stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
1660 sizeof(asysigs_t
), 0);
1661 if ((old
->c_cflag
& CRTSCTS
) && ((tiosp
->c_cflag
& CRTSCTS
) == 0))
1662 tty
->hw_stopped
= 0;
1663 if (((old
->c_cflag
& CLOCAL
) == 0) && (tiosp
->c_cflag
& CLOCAL
))
1664 wake_up_interruptible(&portp
->port
.open_wait
);
1667 /*****************************************************************************/
1670 * Attempt to flow control who ever is sending us data. We won't really
1671 * do any flow control action here. We can't directly, and even if we
1672 * wanted to we would have to send a command to the slave. The slave
1673 * knows how to flow control, and will do so when its buffers reach its
1674 * internal high water marks. So what we will do is set a local state
1675 * bit that will stop us sending any RX data up from the poll routine
1676 * (which is the place where RX data from the slave is handled).
1679 static void stli_throttle(struct tty_struct
*tty
)
1681 struct stliport
*portp
= tty
->driver_data
;
1684 set_bit(ST_RXSTOP
, &portp
->state
);
1687 /*****************************************************************************/
1690 * Unflow control the device sending us data... That means that all
1691 * we have to do is clear the RXSTOP state bit. The next poll call
1692 * will then be able to pass the RX data back up.
1695 static void stli_unthrottle(struct tty_struct
*tty
)
1697 struct stliport
*portp
= tty
->driver_data
;
1700 clear_bit(ST_RXSTOP
, &portp
->state
);
1703 /*****************************************************************************/
1706 * Stop the transmitter.
1709 static void stli_stop(struct tty_struct
*tty
)
1713 /*****************************************************************************/
1716 * Start the transmitter again.
1719 static void stli_start(struct tty_struct
*tty
)
1723 /*****************************************************************************/
1726 * Hangup this port. This is pretty much like closing the port, only
1727 * a little more brutal. No waiting for data to drain. Shutdown the
1728 * port and maybe drop signals. This is rather tricky really. We want
1729 * to close the port as well.
1732 static void stli_hangup(struct tty_struct
*tty
)
1734 struct stliport
*portp
;
1735 struct stlibrd
*brdp
;
1736 struct tty_port
*port
;
1737 unsigned long flags
;
1739 portp
= tty
->driver_data
;
1742 if (portp
->brdnr
>= stli_nrbrds
)
1744 brdp
= stli_brds
[portp
->brdnr
];
1747 port
= &portp
->port
;
1749 spin_lock_irqsave(&port
->lock
, flags
);
1750 port
->flags
&= ~ASYNC_INITIALIZED
;
1751 spin_unlock_irqrestore(&port
->lock
, flags
);
1753 if (!test_bit(ST_CLOSING
, &portp
->state
))
1754 stli_rawclose(brdp
, portp
, 0, 0);
1756 spin_lock_irqsave(&stli_lock
, flags
);
1757 if (tty
->termios
->c_cflag
& HUPCL
) {
1758 stli_mkasysigs(&portp
->asig
, 0, 0);
1759 if (test_bit(ST_CMDING
, &portp
->state
)) {
1760 set_bit(ST_DOSIGS
, &portp
->state
);
1761 set_bit(ST_DOFLUSHTX
, &portp
->state
);
1762 set_bit(ST_DOFLUSHRX
, &portp
->state
);
1764 stli_sendcmd(brdp
, portp
, A_SETSIGNALSF
,
1765 &portp
->asig
, sizeof(asysigs_t
), 0);
1769 clear_bit(ST_TXBUSY
, &portp
->state
);
1770 clear_bit(ST_RXSTOP
, &portp
->state
);
1771 set_bit(TTY_IO_ERROR
, &tty
->flags
);
1772 spin_unlock_irqrestore(&stli_lock
, flags
);
1774 tty_port_hangup(port
);
1777 /*****************************************************************************/
1780 * Flush characters from the lower buffer. We may not have user context
1781 * so we cannot sleep waiting for it to complete. Also we need to check
1782 * if there is chars for this port in the TX cook buffer, and flush them
1786 static void stli_flushbuffer(struct tty_struct
*tty
)
1788 struct stliport
*portp
;
1789 struct stlibrd
*brdp
;
1790 unsigned long ftype
, flags
;
1792 portp
= tty
->driver_data
;
1795 if (portp
->brdnr
>= stli_nrbrds
)
1797 brdp
= stli_brds
[portp
->brdnr
];
1801 spin_lock_irqsave(&brd_lock
, flags
);
1802 if (tty
== stli_txcooktty
) {
1803 stli_txcooktty
= NULL
;
1804 stli_txcooksize
= 0;
1805 stli_txcookrealsize
= 0;
1807 if (test_bit(ST_CMDING
, &portp
->state
)) {
1808 set_bit(ST_DOFLUSHTX
, &portp
->state
);
1811 if (test_bit(ST_DOFLUSHRX
, &portp
->state
)) {
1813 clear_bit(ST_DOFLUSHRX
, &portp
->state
);
1815 __stli_sendcmd(brdp
, portp
, A_FLUSH
, &ftype
, sizeof(u32
), 0);
1817 spin_unlock_irqrestore(&brd_lock
, flags
);
1821 /*****************************************************************************/
1823 static int stli_breakctl(struct tty_struct
*tty
, int state
)
1825 struct stlibrd
*brdp
;
1826 struct stliport
*portp
;
1829 portp
= tty
->driver_data
;
1832 if (portp
->brdnr
>= stli_nrbrds
)
1834 brdp
= stli_brds
[portp
->brdnr
];
1838 arg
= (state
== -1) ? BREAKON
: BREAKOFF
;
1839 stli_cmdwait(brdp
, portp
, A_BREAK
, &arg
, sizeof(long), 0);
1843 /*****************************************************************************/
1845 static void stli_waituntilsent(struct tty_struct
*tty
, int timeout
)
1847 struct stliport
*portp
;
1850 portp
= tty
->driver_data
;
1856 tend
= jiffies
+ timeout
;
1858 while (test_bit(ST_TXBUSY
, &portp
->state
)) {
1859 if (signal_pending(current
))
1861 msleep_interruptible(20);
1862 if (time_after_eq(jiffies
, tend
))
1867 /*****************************************************************************/
1869 static void stli_sendxchar(struct tty_struct
*tty
, char ch
)
1871 struct stlibrd
*brdp
;
1872 struct stliport
*portp
;
1875 portp
= tty
->driver_data
;
1878 if (portp
->brdnr
>= stli_nrbrds
)
1880 brdp
= stli_brds
[portp
->brdnr
];
1884 memset(&actrl
, 0, sizeof(asyctrl_t
));
1885 if (ch
== STOP_CHAR(tty
)) {
1886 actrl
.rxctrl
= CT_STOPFLOW
;
1887 } else if (ch
== START_CHAR(tty
)) {
1888 actrl
.rxctrl
= CT_STARTFLOW
;
1890 actrl
.txctrl
= CT_SENDCHR
;
1893 stli_cmdwait(brdp
, portp
, A_PORTCTRL
, &actrl
, sizeof(asyctrl_t
), 0);
1896 static void stli_portinfo(struct seq_file
*m
, struct stlibrd
*brdp
, struct stliport
*portp
, int portnr
)
1901 rc
= stli_portcmdstats(NULL
, portp
);
1904 if (brdp
->state
& BST_STARTED
) {
1905 switch (stli_comstats
.hwid
) {
1906 case 0: uart
= "2681"; break;
1907 case 1: uart
= "SC26198"; break;
1908 default:uart
= "CD1400"; break;
1911 seq_printf(m
, "%d: uart:%s ", portnr
, uart
);
1913 if ((brdp
->state
& BST_STARTED
) && (rc
>= 0)) {
1916 seq_printf(m
, "tx:%d rx:%d", (int) stli_comstats
.txtotal
,
1917 (int) stli_comstats
.rxtotal
);
1919 if (stli_comstats
.rxframing
)
1920 seq_printf(m
, " fe:%d",
1921 (int) stli_comstats
.rxframing
);
1922 if (stli_comstats
.rxparity
)
1923 seq_printf(m
, " pe:%d",
1924 (int) stli_comstats
.rxparity
);
1925 if (stli_comstats
.rxbreaks
)
1926 seq_printf(m
, " brk:%d",
1927 (int) stli_comstats
.rxbreaks
);
1928 if (stli_comstats
.rxoverrun
)
1929 seq_printf(m
, " oe:%d",
1930 (int) stli_comstats
.rxoverrun
);
1933 if (stli_comstats
.signals
& TIOCM_RTS
) {
1934 seq_printf(m
, "%c%s", sep
, "RTS");
1937 if (stli_comstats
.signals
& TIOCM_CTS
) {
1938 seq_printf(m
, "%c%s", sep
, "CTS");
1941 if (stli_comstats
.signals
& TIOCM_DTR
) {
1942 seq_printf(m
, "%c%s", sep
, "DTR");
1945 if (stli_comstats
.signals
& TIOCM_CD
) {
1946 seq_printf(m
, "%c%s", sep
, "DCD");
1949 if (stli_comstats
.signals
& TIOCM_DSR
) {
1950 seq_printf(m
, "%c%s", sep
, "DSR");
1957 /*****************************************************************************/
1960 * Port info, read from the /proc file system.
1963 static int stli_proc_show(struct seq_file
*m
, void *v
)
1965 struct stlibrd
*brdp
;
1966 struct stliport
*portp
;
1967 unsigned int brdnr
, portnr
, totalport
;
1971 seq_printf(m
, "%s: version %s\n", stli_drvtitle
, stli_drvversion
);
1974 * We scan through for each board, panel and port. The offset is
1975 * calculated on the fly, and irrelevant ports are skipped.
1977 for (brdnr
= 0; (brdnr
< stli_nrbrds
); brdnr
++) {
1978 brdp
= stli_brds
[brdnr
];
1981 if (brdp
->state
== 0)
1984 totalport
= brdnr
* STL_MAXPORTS
;
1985 for (portnr
= 0; (portnr
< brdp
->nrports
); portnr
++,
1987 portp
= brdp
->ports
[portnr
];
1990 stli_portinfo(m
, brdp
, portp
, totalport
);
1996 static int stli_proc_open(struct inode
*inode
, struct file
*file
)
1998 return single_open(file
, stli_proc_show
, NULL
);
2001 static const struct file_operations stli_proc_fops
= {
2002 .owner
= THIS_MODULE
,
2003 .open
= stli_proc_open
,
2005 .llseek
= seq_lseek
,
2006 .release
= single_release
,
2009 /*****************************************************************************/
2012 * Generic send command routine. This will send a message to the slave,
2013 * of the specified type with the specified argument. Must be very
2014 * careful of data that will be copied out from shared memory -
2015 * containing command results. The command completion is all done from
2016 * a poll routine that does not have user context. Therefore you cannot
2017 * copy back directly into user space, or to the kernel stack of a
2018 * process. This routine does not sleep, so can be called from anywhere.
2020 * The caller must hold the brd_lock (see also stli_sendcmd the usual
2024 static void __stli_sendcmd(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
)
2026 cdkhdr_t __iomem
*hdrp
;
2027 cdkctrl_t __iomem
*cp
;
2028 unsigned char __iomem
*bits
;
2030 if (test_bit(ST_CMDING
, &portp
->state
)) {
2031 printk(KERN_ERR
"istallion: command already busy, cmd=%x!\n",
2037 cp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->ctrl
;
2039 memcpy_toio((void __iomem
*) &(cp
->args
[0]), arg
, size
);
2042 portp
->argsize
= size
;
2045 writel(0, &cp
->status
);
2046 writel(cmd
, &cp
->cmd
);
2047 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
2048 bits
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
+
2050 writeb(readb(bits
) | portp
->portbit
, bits
);
2051 set_bit(ST_CMDING
, &portp
->state
);
2055 static void stli_sendcmd(struct stlibrd
*brdp
, struct stliport
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
)
2057 unsigned long flags
;
2059 spin_lock_irqsave(&brd_lock
, flags
);
2060 __stli_sendcmd(brdp
, portp
, cmd
, arg
, size
, copyback
);
2061 spin_unlock_irqrestore(&brd_lock
, flags
);
2064 /*****************************************************************************/
2067 * Read data from shared memory. This assumes that the shared memory
2068 * is enabled and that interrupts are off. Basically we just empty out
2069 * the shared memory buffer into the tty buffer. Must be careful to
2070 * handle the case where we fill up the tty buffer, but still have
2071 * more chars to unload.
2074 static void stli_read(struct stlibrd
*brdp
, struct stliport
*portp
)
2076 cdkasyrq_t __iomem
*rp
;
2077 char __iomem
*shbuf
;
2078 struct tty_struct
*tty
;
2079 unsigned int head
, tail
, size
;
2080 unsigned int len
, stlen
;
2082 if (test_bit(ST_RXSTOP
, &portp
->state
))
2084 tty
= tty_port_tty_get(&portp
->port
);
2088 rp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->rxq
;
2089 head
= (unsigned int) readw(&rp
->head
);
2090 if (head
!= ((unsigned int) readw(&rp
->head
)))
2091 head
= (unsigned int) readw(&rp
->head
);
2092 tail
= (unsigned int) readw(&rp
->tail
);
2093 size
= portp
->rxsize
;
2098 len
= size
- (tail
- head
);
2099 stlen
= size
- tail
;
2102 len
= tty_buffer_request_room(tty
, len
);
2104 shbuf
= (char __iomem
*) EBRDGETMEMPTR(brdp
, portp
->rxoffset
);
2107 unsigned char *cptr
;
2109 stlen
= min(len
, stlen
);
2110 tty_prepare_flip_string(tty
, &cptr
, stlen
);
2111 memcpy_fromio(cptr
, shbuf
+ tail
, stlen
);
2119 rp
= &((cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->rxq
;
2120 writew(tail
, &rp
->tail
);
2123 set_bit(ST_RXING
, &portp
->state
);
2125 tty_schedule_flip(tty
);
2129 /*****************************************************************************/
2132 * Set up and carry out any delayed commands. There is only a small set
2133 * of slave commands that can be done "off-level". So it is not too
2134 * difficult to deal with them here.
2137 static void stli_dodelaycmd(struct stliport
*portp
, cdkctrl_t __iomem
*cp
)
2141 if (test_bit(ST_DOSIGS
, &portp
->state
)) {
2142 if (test_bit(ST_DOFLUSHTX
, &portp
->state
) &&
2143 test_bit(ST_DOFLUSHRX
, &portp
->state
))
2144 cmd
= A_SETSIGNALSF
;
2145 else if (test_bit(ST_DOFLUSHTX
, &portp
->state
))
2146 cmd
= A_SETSIGNALSFTX
;
2147 else if (test_bit(ST_DOFLUSHRX
, &portp
->state
))
2148 cmd
= A_SETSIGNALSFRX
;
2151 clear_bit(ST_DOFLUSHTX
, &portp
->state
);
2152 clear_bit(ST_DOFLUSHRX
, &portp
->state
);
2153 clear_bit(ST_DOSIGS
, &portp
->state
);
2154 memcpy_toio((void __iomem
*) &(cp
->args
[0]), (void *) &portp
->asig
,
2156 writel(0, &cp
->status
);
2157 writel(cmd
, &cp
->cmd
);
2158 set_bit(ST_CMDING
, &portp
->state
);
2159 } else if (test_bit(ST_DOFLUSHTX
, &portp
->state
) ||
2160 test_bit(ST_DOFLUSHRX
, &portp
->state
)) {
2161 cmd
= ((test_bit(ST_DOFLUSHTX
, &portp
->state
)) ? FLUSHTX
: 0);
2162 cmd
|= ((test_bit(ST_DOFLUSHRX
, &portp
->state
)) ? FLUSHRX
: 0);
2163 clear_bit(ST_DOFLUSHTX
, &portp
->state
);
2164 clear_bit(ST_DOFLUSHRX
, &portp
->state
);
2165 memcpy_toio((void __iomem
*) &(cp
->args
[0]), (void *) &cmd
, sizeof(int));
2166 writel(0, &cp
->status
);
2167 writel(A_FLUSH
, &cp
->cmd
);
2168 set_bit(ST_CMDING
, &portp
->state
);
2172 /*****************************************************************************/
2175 * Host command service checking. This handles commands or messages
2176 * coming from the slave to the host. Must have board shared memory
2177 * enabled and interrupts off when called. Notice that by servicing the
2178 * read data last we don't need to change the shared memory pointer
2179 * during processing (which is a slow IO operation).
2180 * Return value indicates if this port is still awaiting actions from
2181 * the slave (like open, command, or even TX data being sent). If 0
2182 * then port is still busy, otherwise no longer busy.
2185 static int stli_hostcmd(struct stlibrd
*brdp
, struct stliport
*portp
)
2187 cdkasy_t __iomem
*ap
;
2188 cdkctrl_t __iomem
*cp
;
2189 struct tty_struct
*tty
;
2191 unsigned long oldsigs
;
2194 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
2198 * Check if we are waiting for an open completion message.
2200 if (test_bit(ST_OPENING
, &portp
->state
)) {
2201 rc
= readl(&cp
->openarg
);
2202 if (readb(&cp
->open
) == 0 && rc
!= 0) {
2205 writel(0, &cp
->openarg
);
2207 clear_bit(ST_OPENING
, &portp
->state
);
2208 wake_up_interruptible(&portp
->raw_wait
);
2213 * Check if we are waiting for a close completion message.
2215 if (test_bit(ST_CLOSING
, &portp
->state
)) {
2216 rc
= (int) readl(&cp
->closearg
);
2217 if (readb(&cp
->close
) == 0 && rc
!= 0) {
2220 writel(0, &cp
->closearg
);
2222 clear_bit(ST_CLOSING
, &portp
->state
);
2223 wake_up_interruptible(&portp
->raw_wait
);
2228 * Check if we are waiting for a command completion message. We may
2229 * need to copy out the command results associated with this command.
2231 if (test_bit(ST_CMDING
, &portp
->state
)) {
2232 rc
= readl(&cp
->status
);
2233 if (readl(&cp
->cmd
) == 0 && rc
!= 0) {
2236 if (portp
->argp
!= NULL
) {
2237 memcpy_fromio(portp
->argp
, (void __iomem
*) &(cp
->args
[0]),
2241 writel(0, &cp
->status
);
2243 clear_bit(ST_CMDING
, &portp
->state
);
2244 stli_dodelaycmd(portp
, cp
);
2245 wake_up_interruptible(&portp
->raw_wait
);
2250 * Check for any notification messages ready. This includes lots of
2251 * different types of events - RX chars ready, RX break received,
2252 * TX data low or empty in the slave, modem signals changed state.
2259 tty
= tty_port_tty_get(&portp
->port
);
2261 if (nt
.signal
& SG_DCD
) {
2262 oldsigs
= portp
->sigs
;
2263 portp
->sigs
= stli_mktiocm(nt
.sigvalue
);
2264 clear_bit(ST_GETSIGS
, &portp
->state
);
2265 if ((portp
->sigs
& TIOCM_CD
) &&
2266 ((oldsigs
& TIOCM_CD
) == 0))
2267 wake_up_interruptible(&portp
->port
.open_wait
);
2268 if ((oldsigs
& TIOCM_CD
) &&
2269 ((portp
->sigs
& TIOCM_CD
) == 0)) {
2270 if (portp
->port
.flags
& ASYNC_CHECK_CD
) {
2277 if (nt
.data
& DT_TXEMPTY
)
2278 clear_bit(ST_TXBUSY
, &portp
->state
);
2279 if (nt
.data
& (DT_TXEMPTY
| DT_TXLOW
)) {
2286 if ((nt
.data
& DT_RXBREAK
) && (portp
->rxmarkmsk
& BRKINT
)) {
2288 tty_insert_flip_char(tty
, 0, TTY_BREAK
);
2289 if (portp
->port
.flags
& ASYNC_SAK
) {
2293 tty_schedule_flip(tty
);
2298 if (nt
.data
& DT_RXBUSY
) {
2300 stli_read(brdp
, portp
);
2305 * It might seem odd that we are checking for more RX chars here.
2306 * But, we need to handle the case where the tty buffer was previously
2307 * filled, but we had more characters to pass up. The slave will not
2308 * send any more RX notify messages until the RX buffer has been emptied.
2309 * But it will leave the service bits on (since the buffer is not empty).
2310 * So from here we can try to process more RX chars.
2312 if ((!donerx
) && test_bit(ST_RXING
, &portp
->state
)) {
2313 clear_bit(ST_RXING
, &portp
->state
);
2314 stli_read(brdp
, portp
);
2317 return((test_bit(ST_OPENING
, &portp
->state
) ||
2318 test_bit(ST_CLOSING
, &portp
->state
) ||
2319 test_bit(ST_CMDING
, &portp
->state
) ||
2320 test_bit(ST_TXBUSY
, &portp
->state
) ||
2321 test_bit(ST_RXING
, &portp
->state
)) ? 0 : 1);
2324 /*****************************************************************************/
2327 * Service all ports on a particular board. Assumes that the boards
2328 * shared memory is enabled, and that the page pointer is pointed
2329 * at the cdk header structure.
2332 static void stli_brdpoll(struct stlibrd
*brdp
, cdkhdr_t __iomem
*hdrp
)
2334 struct stliport
*portp
;
2335 unsigned char hostbits
[(STL_MAXCHANS
/ 8) + 1];
2336 unsigned char slavebits
[(STL_MAXCHANS
/ 8) + 1];
2337 unsigned char __iomem
*slavep
;
2338 int bitpos
, bitat
, bitsize
;
2339 int channr
, nrdevs
, slavebitchange
;
2341 bitsize
= brdp
->bitsize
;
2342 nrdevs
= brdp
->nrdevs
;
2345 * Check if slave wants any service. Basically we try to do as
2346 * little work as possible here. There are 2 levels of service
2347 * bits. So if there is nothing to do we bail early. We check
2348 * 8 service bits at a time in the inner loop, so we can bypass
2349 * the lot if none of them want service.
2351 memcpy_fromio(&hostbits
[0], (((unsigned char __iomem
*) hdrp
) + brdp
->hostoffset
),
2354 memset(&slavebits
[0], 0, bitsize
);
2357 for (bitpos
= 0; (bitpos
< bitsize
); bitpos
++) {
2358 if (hostbits
[bitpos
] == 0)
2360 channr
= bitpos
* 8;
2361 for (bitat
= 0x1; (channr
< nrdevs
); channr
++, bitat
<<= 1) {
2362 if (hostbits
[bitpos
] & bitat
) {
2363 portp
= brdp
->ports
[(channr
- 1)];
2364 if (stli_hostcmd(brdp
, portp
)) {
2366 slavebits
[bitpos
] |= bitat
;
2373 * If any of the ports are no longer busy then update them in the
2374 * slave request bits. We need to do this after, since a host port
2375 * service may initiate more slave requests.
2377 if (slavebitchange
) {
2378 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
2379 slavep
= ((unsigned char __iomem
*) hdrp
) + brdp
->slaveoffset
;
2380 for (bitpos
= 0; (bitpos
< bitsize
); bitpos
++) {
2381 if (readb(slavebits
+ bitpos
))
2382 writeb(readb(slavep
+ bitpos
) & ~slavebits
[bitpos
], slavebits
+ bitpos
);
2387 /*****************************************************************************/
2390 * Driver poll routine. This routine polls the boards in use and passes
2391 * messages back up to host when necessary. This is actually very
2392 * CPU efficient, since we will always have the kernel poll clock, it
2393 * adds only a few cycles when idle (since board service can be
2394 * determined very easily), but when loaded generates no interrupts
2395 * (with their expensive associated context change).
2398 static void stli_poll(unsigned long arg
)
2400 cdkhdr_t __iomem
*hdrp
;
2401 struct stlibrd
*brdp
;
2404 mod_timer(&stli_timerlist
, STLI_TIMEOUT
);
2407 * Check each board and do any servicing required.
2409 for (brdnr
= 0; (brdnr
< stli_nrbrds
); brdnr
++) {
2410 brdp
= stli_brds
[brdnr
];
2413 if ((brdp
->state
& BST_STARTED
) == 0)
2416 spin_lock(&brd_lock
);
2418 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
2419 if (readb(&hdrp
->hostreq
))
2420 stli_brdpoll(brdp
, hdrp
);
2422 spin_unlock(&brd_lock
);
2426 /*****************************************************************************/
2429 * Translate the termios settings into the port setting structure of
2433 static void stli_mkasyport(struct tty_struct
*tty
, struct stliport
*portp
,
2434 asyport_t
*pp
, struct ktermios
*tiosp
)
2436 memset(pp
, 0, sizeof(asyport_t
));
2439 * Start of by setting the baud, char size, parity and stop bit info.
2441 pp
->baudout
= tty_get_baud_rate(tty
);
2442 if ((tiosp
->c_cflag
& CBAUD
) == B38400
) {
2443 if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_HI
)
2444 pp
->baudout
= 57600;
2445 else if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_VHI
)
2446 pp
->baudout
= 115200;
2447 else if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_SHI
)
2448 pp
->baudout
= 230400;
2449 else if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_WARP
)
2450 pp
->baudout
= 460800;
2451 else if ((portp
->port
.flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_CUST
)
2452 pp
->baudout
= (portp
->baud_base
/ portp
->custom_divisor
);
2454 if (pp
->baudout
> STL_MAXBAUD
)
2455 pp
->baudout
= STL_MAXBAUD
;
2456 pp
->baudin
= pp
->baudout
;
2458 switch (tiosp
->c_cflag
& CSIZE
) {
2473 if (tiosp
->c_cflag
& CSTOPB
)
2474 pp
->stopbs
= PT_STOP2
;
2476 pp
->stopbs
= PT_STOP1
;
2478 if (tiosp
->c_cflag
& PARENB
) {
2479 if (tiosp
->c_cflag
& PARODD
)
2480 pp
->parity
= PT_ODDPARITY
;
2482 pp
->parity
= PT_EVENPARITY
;
2484 pp
->parity
= PT_NOPARITY
;
2488 * Set up any flow control options enabled.
2490 if (tiosp
->c_iflag
& IXON
) {
2492 if (tiosp
->c_iflag
& IXANY
)
2493 pp
->flow
|= F_IXANY
;
2495 if (tiosp
->c_cflag
& CRTSCTS
)
2496 pp
->flow
|= (F_RTSFLOW
| F_CTSFLOW
);
2498 pp
->startin
= tiosp
->c_cc
[VSTART
];
2499 pp
->stopin
= tiosp
->c_cc
[VSTOP
];
2500 pp
->startout
= tiosp
->c_cc
[VSTART
];
2501 pp
->stopout
= tiosp
->c_cc
[VSTOP
];
2504 * Set up the RX char marking mask with those RX error types we must
2505 * catch. We can get the slave to help us out a little here, it will
2506 * ignore parity errors and breaks for us, and mark parity errors in
2509 if (tiosp
->c_iflag
& IGNPAR
)
2510 pp
->iflag
|= FI_IGNRXERRS
;
2511 if (tiosp
->c_iflag
& IGNBRK
)
2512 pp
->iflag
|= FI_IGNBREAK
;
2514 portp
->rxmarkmsk
= 0;
2515 if (tiosp
->c_iflag
& (INPCK
| PARMRK
))
2516 pp
->iflag
|= FI_1MARKRXERRS
;
2517 if (tiosp
->c_iflag
& BRKINT
)
2518 portp
->rxmarkmsk
|= BRKINT
;
2521 * Set up clocal processing as required.
2523 if (tiosp
->c_cflag
& CLOCAL
)
2524 portp
->port
.flags
&= ~ASYNC_CHECK_CD
;
2526 portp
->port
.flags
|= ASYNC_CHECK_CD
;
2529 * Transfer any persistent flags into the asyport structure.
2531 pp
->pflag
= (portp
->pflag
& 0xffff);
2532 pp
->vmin
= (portp
->pflag
& P_RXIMIN
) ? 1 : 0;
2533 pp
->vtime
= (portp
->pflag
& P_RXITIME
) ? 1 : 0;
2534 pp
->cc
[1] = (portp
->pflag
& P_RXTHOLD
) ? 1 : 0;
2537 /*****************************************************************************/
2540 * Construct a slave signals structure for setting the DTR and RTS
2541 * signals as specified.
2544 static void stli_mkasysigs(asysigs_t
*sp
, int dtr
, int rts
)
2546 memset(sp
, 0, sizeof(asysigs_t
));
2548 sp
->signal
|= SG_DTR
;
2549 sp
->sigvalue
|= ((dtr
> 0) ? SG_DTR
: 0);
2552 sp
->signal
|= SG_RTS
;
2553 sp
->sigvalue
|= ((rts
> 0) ? SG_RTS
: 0);
2557 /*****************************************************************************/
2560 * Convert the signals returned from the slave into a local TIOCM type
2561 * signals value. We keep them locally in TIOCM format.
2564 static long stli_mktiocm(unsigned long sigvalue
)
2567 tiocm
|= ((sigvalue
& SG_DCD
) ? TIOCM_CD
: 0);
2568 tiocm
|= ((sigvalue
& SG_CTS
) ? TIOCM_CTS
: 0);
2569 tiocm
|= ((sigvalue
& SG_RI
) ? TIOCM_RI
: 0);
2570 tiocm
|= ((sigvalue
& SG_DSR
) ? TIOCM_DSR
: 0);
2571 tiocm
|= ((sigvalue
& SG_DTR
) ? TIOCM_DTR
: 0);
2572 tiocm
|= ((sigvalue
& SG_RTS
) ? TIOCM_RTS
: 0);
2576 /*****************************************************************************/
2579 * All panels and ports actually attached have been worked out. All
2580 * we need to do here is set up the appropriate per port data structures.
2583 static int stli_initports(struct stlibrd
*brdp
)
2585 struct stliport
*portp
;
2586 unsigned int i
, panelnr
, panelport
;
2588 for (i
= 0, panelnr
= 0, panelport
= 0; (i
< brdp
->nrports
); i
++) {
2589 portp
= kzalloc(sizeof(struct stliport
), GFP_KERNEL
);
2591 printk(KERN_WARNING
"istallion: failed to allocate port structure\n");
2594 tty_port_init(&portp
->port
);
2595 portp
->port
.ops
= &stli_port_ops
;
2596 portp
->magic
= STLI_PORTMAGIC
;
2598 portp
->brdnr
= brdp
->brdnr
;
2599 portp
->panelnr
= panelnr
;
2600 portp
->baud_base
= STL_BAUDBASE
;
2601 portp
->port
.close_delay
= STL_CLOSEDELAY
;
2602 portp
->closing_wait
= 30 * HZ
;
2603 init_waitqueue_head(&portp
->port
.open_wait
);
2604 init_waitqueue_head(&portp
->port
.close_wait
);
2605 init_waitqueue_head(&portp
->raw_wait
);
2607 if (panelport
>= brdp
->panels
[panelnr
]) {
2611 brdp
->ports
[i
] = portp
;
2617 /*****************************************************************************/
2620 * All the following routines are board specific hardware operations.
2623 static void stli_ecpinit(struct stlibrd
*brdp
)
2625 unsigned long memconf
;
2627 outb(ECP_ATSTOP
, (brdp
->iobase
+ ECP_ATCONFR
));
2629 outb(ECP_ATDISABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
2632 memconf
= (brdp
->memaddr
& ECP_ATADDRMASK
) >> ECP_ATADDRSHFT
;
2633 outb(memconf
, (brdp
->iobase
+ ECP_ATMEMAR
));
2636 /*****************************************************************************/
2638 static void stli_ecpenable(struct stlibrd
*brdp
)
2640 outb(ECP_ATENABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
2643 /*****************************************************************************/
2645 static void stli_ecpdisable(struct stlibrd
*brdp
)
2647 outb(ECP_ATDISABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
2650 /*****************************************************************************/
2652 static void __iomem
*stli_ecpgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2657 if (offset
> brdp
->memsize
) {
2658 printk(KERN_ERR
"istallion: shared memory pointer=%x out of "
2659 "range at line=%d(%d), brd=%d\n",
2660 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
2664 ptr
= brdp
->membase
+ (offset
% ECP_ATPAGESIZE
);
2665 val
= (unsigned char) (offset
/ ECP_ATPAGESIZE
);
2667 outb(val
, (brdp
->iobase
+ ECP_ATMEMPR
));
2671 /*****************************************************************************/
2673 static void stli_ecpreset(struct stlibrd
*brdp
)
2675 outb(ECP_ATSTOP
, (brdp
->iobase
+ ECP_ATCONFR
));
2677 outb(ECP_ATDISABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
2681 /*****************************************************************************/
2683 static void stli_ecpintr(struct stlibrd
*brdp
)
2685 outb(0x1, brdp
->iobase
);
2688 /*****************************************************************************/
2691 * The following set of functions act on ECP EISA boards.
2694 static void stli_ecpeiinit(struct stlibrd
*brdp
)
2696 unsigned long memconf
;
2698 outb(0x1, (brdp
->iobase
+ ECP_EIBRDENAB
));
2699 outb(ECP_EISTOP
, (brdp
->iobase
+ ECP_EICONFR
));
2701 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
2704 memconf
= (brdp
->memaddr
& ECP_EIADDRMASKL
) >> ECP_EIADDRSHFTL
;
2705 outb(memconf
, (brdp
->iobase
+ ECP_EIMEMARL
));
2706 memconf
= (brdp
->memaddr
& ECP_EIADDRMASKH
) >> ECP_EIADDRSHFTH
;
2707 outb(memconf
, (brdp
->iobase
+ ECP_EIMEMARH
));
2710 /*****************************************************************************/
2712 static void stli_ecpeienable(struct stlibrd
*brdp
)
2714 outb(ECP_EIENABLE
, (brdp
->iobase
+ ECP_EICONFR
));
2717 /*****************************************************************************/
2719 static void stli_ecpeidisable(struct stlibrd
*brdp
)
2721 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
2724 /*****************************************************************************/
2726 static void __iomem
*stli_ecpeigetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2731 if (offset
> brdp
->memsize
) {
2732 printk(KERN_ERR
"istallion: shared memory pointer=%x out of "
2733 "range at line=%d(%d), brd=%d\n",
2734 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
2738 ptr
= brdp
->membase
+ (offset
% ECP_EIPAGESIZE
);
2739 if (offset
< ECP_EIPAGESIZE
)
2742 val
= ECP_EIENABLE
| 0x40;
2744 outb(val
, (brdp
->iobase
+ ECP_EICONFR
));
2748 /*****************************************************************************/
2750 static void stli_ecpeireset(struct stlibrd
*brdp
)
2752 outb(ECP_EISTOP
, (brdp
->iobase
+ ECP_EICONFR
));
2754 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
2758 /*****************************************************************************/
2761 * The following set of functions act on ECP MCA boards.
2764 static void stli_ecpmcenable(struct stlibrd
*brdp
)
2766 outb(ECP_MCENABLE
, (brdp
->iobase
+ ECP_MCCONFR
));
2769 /*****************************************************************************/
2771 static void stli_ecpmcdisable(struct stlibrd
*brdp
)
2773 outb(ECP_MCDISABLE
, (brdp
->iobase
+ ECP_MCCONFR
));
2776 /*****************************************************************************/
2778 static void __iomem
*stli_ecpmcgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2783 if (offset
> brdp
->memsize
) {
2784 printk(KERN_ERR
"istallion: shared memory pointer=%x out of "
2785 "range at line=%d(%d), brd=%d\n",
2786 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
2790 ptr
= brdp
->membase
+ (offset
% ECP_MCPAGESIZE
);
2791 val
= ((unsigned char) (offset
/ ECP_MCPAGESIZE
)) | ECP_MCENABLE
;
2793 outb(val
, (brdp
->iobase
+ ECP_MCCONFR
));
2797 /*****************************************************************************/
2799 static void stli_ecpmcreset(struct stlibrd
*brdp
)
2801 outb(ECP_MCSTOP
, (brdp
->iobase
+ ECP_MCCONFR
));
2803 outb(ECP_MCDISABLE
, (brdp
->iobase
+ ECP_MCCONFR
));
2807 /*****************************************************************************/
2810 * The following set of functions act on ECP PCI boards.
2813 static void stli_ecppciinit(struct stlibrd
*brdp
)
2815 outb(ECP_PCISTOP
, (brdp
->iobase
+ ECP_PCICONFR
));
2817 outb(0, (brdp
->iobase
+ ECP_PCICONFR
));
2821 /*****************************************************************************/
2823 static void __iomem
*stli_ecppcigetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2828 if (offset
> brdp
->memsize
) {
2829 printk(KERN_ERR
"istallion: shared memory pointer=%x out of "
2830 "range at line=%d(%d), board=%d\n",
2831 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
2835 ptr
= brdp
->membase
+ (offset
% ECP_PCIPAGESIZE
);
2836 val
= (offset
/ ECP_PCIPAGESIZE
) << 1;
2838 outb(val
, (brdp
->iobase
+ ECP_PCICONFR
));
2842 /*****************************************************************************/
2844 static void stli_ecppcireset(struct stlibrd
*brdp
)
2846 outb(ECP_PCISTOP
, (brdp
->iobase
+ ECP_PCICONFR
));
2848 outb(0, (brdp
->iobase
+ ECP_PCICONFR
));
2852 /*****************************************************************************/
2855 * The following routines act on ONboards.
2858 static void stli_onbinit(struct stlibrd
*brdp
)
2860 unsigned long memconf
;
2862 outb(ONB_ATSTOP
, (brdp
->iobase
+ ONB_ATCONFR
));
2864 outb(ONB_ATDISABLE
, (brdp
->iobase
+ ONB_ATCONFR
));
2867 memconf
= (brdp
->memaddr
& ONB_ATADDRMASK
) >> ONB_ATADDRSHFT
;
2868 outb(memconf
, (brdp
->iobase
+ ONB_ATMEMAR
));
2869 outb(0x1, brdp
->iobase
);
2873 /*****************************************************************************/
2875 static void stli_onbenable(struct stlibrd
*brdp
)
2877 outb((brdp
->enabval
| ONB_ATENABLE
), (brdp
->iobase
+ ONB_ATCONFR
));
2880 /*****************************************************************************/
2882 static void stli_onbdisable(struct stlibrd
*brdp
)
2884 outb((brdp
->enabval
| ONB_ATDISABLE
), (brdp
->iobase
+ ONB_ATCONFR
));
2887 /*****************************************************************************/
2889 static void __iomem
*stli_onbgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2893 if (offset
> brdp
->memsize
) {
2894 printk(KERN_ERR
"istallion: shared memory pointer=%x out of "
2895 "range at line=%d(%d), brd=%d\n",
2896 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
2899 ptr
= brdp
->membase
+ (offset
% ONB_ATPAGESIZE
);
2904 /*****************************************************************************/
2906 static void stli_onbreset(struct stlibrd
*brdp
)
2908 outb(ONB_ATSTOP
, (brdp
->iobase
+ ONB_ATCONFR
));
2910 outb(ONB_ATDISABLE
, (brdp
->iobase
+ ONB_ATCONFR
));
2914 /*****************************************************************************/
2917 * The following routines act on ONboard EISA.
2920 static void stli_onbeinit(struct stlibrd
*brdp
)
2922 unsigned long memconf
;
2924 outb(0x1, (brdp
->iobase
+ ONB_EIBRDENAB
));
2925 outb(ONB_EISTOP
, (brdp
->iobase
+ ONB_EICONFR
));
2927 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
2930 memconf
= (brdp
->memaddr
& ONB_EIADDRMASKL
) >> ONB_EIADDRSHFTL
;
2931 outb(memconf
, (brdp
->iobase
+ ONB_EIMEMARL
));
2932 memconf
= (brdp
->memaddr
& ONB_EIADDRMASKH
) >> ONB_EIADDRSHFTH
;
2933 outb(memconf
, (brdp
->iobase
+ ONB_EIMEMARH
));
2934 outb(0x1, brdp
->iobase
);
2938 /*****************************************************************************/
2940 static void stli_onbeenable(struct stlibrd
*brdp
)
2942 outb(ONB_EIENABLE
, (brdp
->iobase
+ ONB_EICONFR
));
2945 /*****************************************************************************/
2947 static void stli_onbedisable(struct stlibrd
*brdp
)
2949 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
2952 /*****************************************************************************/
2954 static void __iomem
*stli_onbegetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
2959 if (offset
> brdp
->memsize
) {
2960 printk(KERN_ERR
"istallion: shared memory pointer=%x out of "
2961 "range at line=%d(%d), brd=%d\n",
2962 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
2966 ptr
= brdp
->membase
+ (offset
% ONB_EIPAGESIZE
);
2967 if (offset
< ONB_EIPAGESIZE
)
2970 val
= ONB_EIENABLE
| 0x40;
2972 outb(val
, (brdp
->iobase
+ ONB_EICONFR
));
2976 /*****************************************************************************/
2978 static void stli_onbereset(struct stlibrd
*brdp
)
2980 outb(ONB_EISTOP
, (brdp
->iobase
+ ONB_EICONFR
));
2982 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
2986 /*****************************************************************************/
2989 * The following routines act on Brumby boards.
2992 static void stli_bbyinit(struct stlibrd
*brdp
)
2994 outb(BBY_ATSTOP
, (brdp
->iobase
+ BBY_ATCONFR
));
2996 outb(0, (brdp
->iobase
+ BBY_ATCONFR
));
2998 outb(0x1, brdp
->iobase
);
3002 /*****************************************************************************/
3004 static void __iomem
*stli_bbygetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
3009 BUG_ON(offset
> brdp
->memsize
);
3011 ptr
= brdp
->membase
+ (offset
% BBY_PAGESIZE
);
3012 val
= (unsigned char) (offset
/ BBY_PAGESIZE
);
3013 outb(val
, (brdp
->iobase
+ BBY_ATCONFR
));
3017 /*****************************************************************************/
3019 static void stli_bbyreset(struct stlibrd
*brdp
)
3021 outb(BBY_ATSTOP
, (brdp
->iobase
+ BBY_ATCONFR
));
3023 outb(0, (brdp
->iobase
+ BBY_ATCONFR
));
3027 /*****************************************************************************/
3030 * The following routines act on original old Stallion boards.
3033 static void stli_stalinit(struct stlibrd
*brdp
)
3035 outb(0x1, brdp
->iobase
);
3039 /*****************************************************************************/
3041 static void __iomem
*stli_stalgetmemptr(struct stlibrd
*brdp
, unsigned long offset
, int line
)
3043 BUG_ON(offset
> brdp
->memsize
);
3044 return brdp
->membase
+ (offset
% STAL_PAGESIZE
);
3047 /*****************************************************************************/
3049 static void stli_stalreset(struct stlibrd
*brdp
)
3053 vecp
= (u32 __iomem
*) (brdp
->membase
+ 0x30);
3054 writel(0xffff0000, vecp
);
3055 outb(0, brdp
->iobase
);
3059 /*****************************************************************************/
3062 * Try to find an ECP board and initialize it. This handles only ECP
3066 static int stli_initecp(struct stlibrd
*brdp
)
3069 cdkecpsig_t __iomem
*sigsp
;
3070 unsigned int status
, nxtid
;
3072 int retval
, panelnr
, nrports
;
3074 if ((brdp
->iobase
== 0) || (brdp
->memaddr
== 0)) {
3079 brdp
->iosize
= ECP_IOSIZE
;
3081 if (!request_region(brdp
->iobase
, brdp
->iosize
, "istallion")) {
3087 * Based on the specific board type setup the common vars to access
3088 * and enable shared memory. Set all board specific information now
3091 switch (brdp
->brdtype
) {
3093 brdp
->memsize
= ECP_MEMSIZE
;
3094 brdp
->pagesize
= ECP_ATPAGESIZE
;
3095 brdp
->init
= stli_ecpinit
;
3096 brdp
->enable
= stli_ecpenable
;
3097 brdp
->reenable
= stli_ecpenable
;
3098 brdp
->disable
= stli_ecpdisable
;
3099 brdp
->getmemptr
= stli_ecpgetmemptr
;
3100 brdp
->intr
= stli_ecpintr
;
3101 brdp
->reset
= stli_ecpreset
;
3102 name
= "serial(EC8/64)";
3106 brdp
->memsize
= ECP_MEMSIZE
;
3107 brdp
->pagesize
= ECP_EIPAGESIZE
;
3108 brdp
->init
= stli_ecpeiinit
;
3109 brdp
->enable
= stli_ecpeienable
;
3110 brdp
->reenable
= stli_ecpeienable
;
3111 brdp
->disable
= stli_ecpeidisable
;
3112 brdp
->getmemptr
= stli_ecpeigetmemptr
;
3113 brdp
->intr
= stli_ecpintr
;
3114 brdp
->reset
= stli_ecpeireset
;
3115 name
= "serial(EC8/64-EI)";
3119 brdp
->memsize
= ECP_MEMSIZE
;
3120 brdp
->pagesize
= ECP_MCPAGESIZE
;
3122 brdp
->enable
= stli_ecpmcenable
;
3123 brdp
->reenable
= stli_ecpmcenable
;
3124 brdp
->disable
= stli_ecpmcdisable
;
3125 brdp
->getmemptr
= stli_ecpmcgetmemptr
;
3126 brdp
->intr
= stli_ecpintr
;
3127 brdp
->reset
= stli_ecpmcreset
;
3128 name
= "serial(EC8/64-MCA)";
3132 brdp
->memsize
= ECP_PCIMEMSIZE
;
3133 brdp
->pagesize
= ECP_PCIPAGESIZE
;
3134 brdp
->init
= stli_ecppciinit
;
3135 brdp
->enable
= NULL
;
3136 brdp
->reenable
= NULL
;
3137 brdp
->disable
= NULL
;
3138 brdp
->getmemptr
= stli_ecppcigetmemptr
;
3139 brdp
->intr
= stli_ecpintr
;
3140 brdp
->reset
= stli_ecppcireset
;
3141 name
= "serial(EC/RA-PCI)";
3150 * The per-board operations structure is all set up, so now let's go
3151 * and get the board operational. Firstly initialize board configuration
3152 * registers. Set the memory mapping info so we can get at the boards
3157 brdp
->membase
= ioremap_nocache(brdp
->memaddr
, brdp
->memsize
);
3158 if (brdp
->membase
== NULL
) {
3164 * Now that all specific code is set up, enable the shared memory and
3165 * look for the a signature area that will tell us exactly what board
3166 * this is, and what it is connected to it.
3169 sigsp
= (cdkecpsig_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_SIGADDR
);
3170 memcpy_fromio(&sig
, sigsp
, sizeof(cdkecpsig_t
));
3173 if (sig
.magic
!= cpu_to_le32(ECP_MAGIC
)) {
3179 * Scan through the signature looking at the panels connected to the
3180 * board. Calculate the total number of ports as we go.
3182 for (panelnr
= 0, nxtid
= 0; (panelnr
< STL_MAXPANELS
); panelnr
++) {
3183 status
= sig
.panelid
[nxtid
];
3184 if ((status
& ECH_PNLIDMASK
) != nxtid
)
3187 brdp
->panelids
[panelnr
] = status
;
3188 nrports
= (status
& ECH_PNL16PORT
) ? 16 : 8;
3189 if ((nrports
== 16) && ((status
& ECH_PNLXPID
) == 0))
3191 brdp
->panels
[panelnr
] = nrports
;
3192 brdp
->nrports
+= nrports
;
3198 brdp
->state
|= BST_FOUND
;
3201 iounmap(brdp
->membase
);
3202 brdp
->membase
= NULL
;
3204 release_region(brdp
->iobase
, brdp
->iosize
);
3209 /*****************************************************************************/
3212 * Try to find an ONboard, Brumby or Stallion board and initialize it.
3213 * This handles only these board types.
3216 static int stli_initonb(struct stlibrd
*brdp
)
3219 cdkonbsig_t __iomem
*sigsp
;
3224 * Do a basic sanity check on the IO and memory addresses.
3226 if (brdp
->iobase
== 0 || brdp
->memaddr
== 0) {
3231 brdp
->iosize
= ONB_IOSIZE
;
3233 if (!request_region(brdp
->iobase
, brdp
->iosize
, "istallion")) {
3239 * Based on the specific board type setup the common vars to access
3240 * and enable shared memory. Set all board specific information now
3243 switch (brdp
->brdtype
) {
3246 brdp
->memsize
= ONB_MEMSIZE
;
3247 brdp
->pagesize
= ONB_ATPAGESIZE
;
3248 brdp
->init
= stli_onbinit
;
3249 brdp
->enable
= stli_onbenable
;
3250 brdp
->reenable
= stli_onbenable
;
3251 brdp
->disable
= stli_onbdisable
;
3252 brdp
->getmemptr
= stli_onbgetmemptr
;
3253 brdp
->intr
= stli_ecpintr
;
3254 brdp
->reset
= stli_onbreset
;
3255 if (brdp
->memaddr
> 0x100000)
3256 brdp
->enabval
= ONB_MEMENABHI
;
3258 brdp
->enabval
= ONB_MEMENABLO
;
3259 name
= "serial(ONBoard)";
3263 brdp
->memsize
= ONB_EIMEMSIZE
;
3264 brdp
->pagesize
= ONB_EIPAGESIZE
;
3265 brdp
->init
= stli_onbeinit
;
3266 brdp
->enable
= stli_onbeenable
;
3267 brdp
->reenable
= stli_onbeenable
;
3268 brdp
->disable
= stli_onbedisable
;
3269 brdp
->getmemptr
= stli_onbegetmemptr
;
3270 brdp
->intr
= stli_ecpintr
;
3271 brdp
->reset
= stli_onbereset
;
3272 name
= "serial(ONBoard/E)";
3276 brdp
->memsize
= BBY_MEMSIZE
;
3277 brdp
->pagesize
= BBY_PAGESIZE
;
3278 brdp
->init
= stli_bbyinit
;
3279 brdp
->enable
= NULL
;
3280 brdp
->reenable
= NULL
;
3281 brdp
->disable
= NULL
;
3282 brdp
->getmemptr
= stli_bbygetmemptr
;
3283 brdp
->intr
= stli_ecpintr
;
3284 brdp
->reset
= stli_bbyreset
;
3285 name
= "serial(Brumby)";
3289 brdp
->memsize
= STAL_MEMSIZE
;
3290 brdp
->pagesize
= STAL_PAGESIZE
;
3291 brdp
->init
= stli_stalinit
;
3292 brdp
->enable
= NULL
;
3293 brdp
->reenable
= NULL
;
3294 brdp
->disable
= NULL
;
3295 brdp
->getmemptr
= stli_stalgetmemptr
;
3296 brdp
->intr
= stli_ecpintr
;
3297 brdp
->reset
= stli_stalreset
;
3298 name
= "serial(Stallion)";
3307 * The per-board operations structure is all set up, so now let's go
3308 * and get the board operational. Firstly initialize board configuration
3309 * registers. Set the memory mapping info so we can get at the boards
3314 brdp
->membase
= ioremap_nocache(brdp
->memaddr
, brdp
->memsize
);
3315 if (brdp
->membase
== NULL
) {
3321 * Now that all specific code is set up, enable the shared memory and
3322 * look for the a signature area that will tell us exactly what board
3323 * this is, and how many ports.
3326 sigsp
= (cdkonbsig_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_SIGADDR
);
3327 memcpy_fromio(&sig
, sigsp
, sizeof(cdkonbsig_t
));
3330 if (sig
.magic0
!= cpu_to_le16(ONB_MAGIC0
) ||
3331 sig
.magic1
!= cpu_to_le16(ONB_MAGIC1
) ||
3332 sig
.magic2
!= cpu_to_le16(ONB_MAGIC2
) ||
3333 sig
.magic3
!= cpu_to_le16(ONB_MAGIC3
)) {
3339 * Scan through the signature alive mask and calculate how many ports
3340 * there are on this board.
3346 for (i
= 0; (i
< 16); i
++) {
3347 if (((sig
.amask0
<< i
) & 0x8000) == 0)
3352 brdp
->panels
[0] = brdp
->nrports
;
3355 brdp
->state
|= BST_FOUND
;
3358 iounmap(brdp
->membase
);
3359 brdp
->membase
= NULL
;
3361 release_region(brdp
->iobase
, brdp
->iosize
);
3366 /*****************************************************************************/
3369 * Start up a running board. This routine is only called after the
3370 * code has been down loaded to the board and is operational. It will
3371 * read in the memory map, and get the show on the road...
3374 static int stli_startbrd(struct stlibrd
*brdp
)
3376 cdkhdr_t __iomem
*hdrp
;
3377 cdkmem_t __iomem
*memp
;
3378 cdkasy_t __iomem
*ap
;
3379 unsigned long flags
;
3380 unsigned int portnr
, nrdevs
, i
;
3381 struct stliport
*portp
;
3385 spin_lock_irqsave(&brd_lock
, flags
);
3387 hdrp
= (cdkhdr_t __iomem
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
3388 nrdevs
= hdrp
->nrdevs
;
3391 printk("%s(%d): CDK version %d.%d.%d --> "
3392 "nrdevs=%d memp=%x hostp=%x slavep=%x\n",
3393 __FILE__
, __LINE__
, readb(&hdrp
->ver_release
), readb(&hdrp
->ver_modification
),
3394 readb(&hdrp
->ver_fix
), nrdevs
, (int) readl(&hdrp
->memp
), readl(&hdrp
->hostp
),
3395 readl(&hdrp
->slavep
));
3398 if (nrdevs
< (brdp
->nrports
+ 1)) {
3399 printk(KERN_ERR
"istallion: slave failed to allocate memory for "
3400 "all devices, devices=%d\n", nrdevs
);
3401 brdp
->nrports
= nrdevs
- 1;
3403 brdp
->nrdevs
= nrdevs
;
3404 brdp
->hostoffset
= hdrp
->hostp
- CDK_CDKADDR
;
3405 brdp
->slaveoffset
= hdrp
->slavep
- CDK_CDKADDR
;
3406 brdp
->bitsize
= (nrdevs
+ 7) / 8;
3407 memoff
= readl(&hdrp
->memp
);
3408 if (memoff
> brdp
->memsize
) {
3409 printk(KERN_ERR
"istallion: corrupted shared memory region?\n");
3411 goto stli_donestartup
;
3413 memp
= (cdkmem_t __iomem
*) EBRDGETMEMPTR(brdp
, memoff
);
3414 if (readw(&memp
->dtype
) != TYP_ASYNCTRL
) {
3415 printk(KERN_ERR
"istallion: no slave control device found\n");
3416 goto stli_donestartup
;
3421 * Cycle through memory allocation of each port. We are guaranteed to
3422 * have all ports inside the first page of slave window, so no need to
3423 * change pages while reading memory map.
3425 for (i
= 1, portnr
= 0; (i
< nrdevs
); i
++, portnr
++, memp
++) {
3426 if (readw(&memp
->dtype
) != TYP_ASYNC
)
3428 portp
= brdp
->ports
[portnr
];
3432 portp
->addr
= readl(&memp
->offset
);
3433 portp
->reqbit
= (unsigned char) (0x1 << (i
* 8 / nrdevs
));
3434 portp
->portidx
= (unsigned char) (i
/ 8);
3435 portp
->portbit
= (unsigned char) (0x1 << (i
% 8));
3438 writeb(0xff, &hdrp
->slavereq
);
3441 * For each port setup a local copy of the RX and TX buffer offsets
3442 * and sizes. We do this separate from the above, because we need to
3443 * move the shared memory page...
3445 for (i
= 1, portnr
= 0; (i
< nrdevs
); i
++, portnr
++) {
3446 portp
= brdp
->ports
[portnr
];
3449 if (portp
->addr
== 0)
3451 ap
= (cdkasy_t __iomem
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
3453 portp
->rxsize
= readw(&ap
->rxq
.size
);
3454 portp
->txsize
= readw(&ap
->txq
.size
);
3455 portp
->rxoffset
= readl(&ap
->rxq
.offset
);
3456 portp
->txoffset
= readl(&ap
->txq
.offset
);
3462 spin_unlock_irqrestore(&brd_lock
, flags
);
3465 brdp
->state
|= BST_STARTED
;
3467 if (! stli_timeron
) {
3469 mod_timer(&stli_timerlist
, STLI_TIMEOUT
);
3475 /*****************************************************************************/
3478 * Probe and initialize the specified board.
3481 static int __devinit
stli_brdinit(struct stlibrd
*brdp
)
3485 switch (brdp
->brdtype
) {
3490 retval
= stli_initecp(brdp
);
3497 retval
= stli_initonb(brdp
);
3500 printk(KERN_ERR
"istallion: board=%d is unknown board "
3501 "type=%d\n", brdp
->brdnr
, brdp
->brdtype
);
3508 stli_initports(brdp
);
3509 printk(KERN_INFO
"istallion: %s found, board=%d io=%x mem=%x "
3510 "nrpanels=%d nrports=%d\n", stli_brdnames
[brdp
->brdtype
],
3511 brdp
->brdnr
, brdp
->iobase
, (int) brdp
->memaddr
,
3512 brdp
->nrpanels
, brdp
->nrports
);
3516 #if STLI_EISAPROBE != 0
3517 /*****************************************************************************/
3520 * Probe around trying to find where the EISA boards shared memory
3521 * might be. This is a bit if hack, but it is the best we can do.
3524 static int stli_eisamemprobe(struct stlibrd
*brdp
)
3526 cdkecpsig_t ecpsig
, __iomem
*ecpsigp
;
3527 cdkonbsig_t onbsig
, __iomem
*onbsigp
;
3531 * First up we reset the board, to get it into a known state. There
3532 * is only 2 board types here we need to worry about. Don;t use the
3533 * standard board init routine here, it programs up the shared
3534 * memory address, and we don't know it yet...
3536 if (brdp
->brdtype
== BRD_ECPE
) {
3537 outb(0x1, (brdp
->iobase
+ ECP_EIBRDENAB
));
3538 outb(ECP_EISTOP
, (brdp
->iobase
+ ECP_EICONFR
));
3540 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
3542 stli_ecpeienable(brdp
);
3543 } else if (brdp
->brdtype
== BRD_ONBOARDE
) {
3544 outb(0x1, (brdp
->iobase
+ ONB_EIBRDENAB
));
3545 outb(ONB_EISTOP
, (brdp
->iobase
+ ONB_EICONFR
));
3547 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
3549 outb(0x1, brdp
->iobase
);
3551 stli_onbeenable(brdp
);
3557 brdp
->memsize
= ECP_MEMSIZE
;
3560 * Board shared memory is enabled, so now we have a poke around and
3561 * see if we can find it.
3563 for (i
= 0; (i
< stli_eisamempsize
); i
++) {
3564 brdp
->memaddr
= stli_eisamemprobeaddrs
[i
];
3565 brdp
->membase
= ioremap_nocache(brdp
->memaddr
, brdp
->memsize
);
3566 if (brdp
->membase
== NULL
)
3569 if (brdp
->brdtype
== BRD_ECPE
) {
3570 ecpsigp
= stli_ecpeigetmemptr(brdp
,
3571 CDK_SIGADDR
, __LINE__
);
3572 memcpy_fromio(&ecpsig
, ecpsigp
, sizeof(cdkecpsig_t
));
3573 if (ecpsig
.magic
== cpu_to_le32(ECP_MAGIC
))
3576 onbsigp
= (cdkonbsig_t __iomem
*) stli_onbegetmemptr(brdp
,
3577 CDK_SIGADDR
, __LINE__
);
3578 memcpy_fromio(&onbsig
, onbsigp
, sizeof(cdkonbsig_t
));
3579 if ((onbsig
.magic0
== cpu_to_le16(ONB_MAGIC0
)) &&
3580 (onbsig
.magic1
== cpu_to_le16(ONB_MAGIC1
)) &&
3581 (onbsig
.magic2
== cpu_to_le16(ONB_MAGIC2
)) &&
3582 (onbsig
.magic3
== cpu_to_le16(ONB_MAGIC3
)))
3586 iounmap(brdp
->membase
);
3592 * Regardless of whether we found the shared memory or not we must
3593 * disable the region. After that return success or failure.
3595 if (brdp
->brdtype
== BRD_ECPE
)
3596 stli_ecpeidisable(brdp
);
3598 stli_onbedisable(brdp
);
3602 brdp
->membase
= NULL
;
3603 printk(KERN_ERR
"istallion: failed to probe shared memory "
3604 "region for %s in EISA slot=%d\n",
3605 stli_brdnames
[brdp
->brdtype
], (brdp
->iobase
>> 12));
3612 static int stli_getbrdnr(void)
3616 for (i
= 0; i
< STL_MAXBRDS
; i
++) {
3617 if (!stli_brds
[i
]) {
3618 if (i
>= stli_nrbrds
)
3619 stli_nrbrds
= i
+ 1;
3626 #if STLI_EISAPROBE != 0
3627 /*****************************************************************************/
3630 * Probe around and try to find any EISA boards in system. The biggest
3631 * problem here is finding out what memory address is associated with
3632 * an EISA board after it is found. The registers of the ECPE and
3633 * ONboardE are not readable - so we can't read them from there. We
3634 * don't have access to the EISA CMOS (or EISA BIOS) so we don't
3635 * actually have any way to find out the real value. The best we can
3636 * do is go probing around in the usual places hoping we can find it.
3639 static int __init
stli_findeisabrds(void)
3641 struct stlibrd
*brdp
;
3642 unsigned int iobase
, eid
, i
;
3643 int brdnr
, found
= 0;
3646 * Firstly check if this is an EISA system. If this is not an EISA system then
3647 * don't bother going any further!
3653 * Looks like an EISA system, so go searching for EISA boards.
3655 for (iobase
= 0x1000; (iobase
<= 0xc000); iobase
+= 0x1000) {
3656 outb(0xff, (iobase
+ 0xc80));
3657 eid
= inb(iobase
+ 0xc80);
3658 eid
|= inb(iobase
+ 0xc81) << 8;
3659 if (eid
!= STL_EISAID
)
3663 * We have found a board. Need to check if this board was
3664 * statically configured already (just in case!).
3666 for (i
= 0; (i
< STL_MAXBRDS
); i
++) {
3667 brdp
= stli_brds
[i
];
3670 if (brdp
->iobase
== iobase
)
3673 if (i
< STL_MAXBRDS
)
3677 * We have found a Stallion board and it is not configured already.
3678 * Allocate a board structure and initialize it.
3680 if ((brdp
= stli_allocbrd()) == NULL
)
3681 return found
? : -ENOMEM
;
3682 brdnr
= stli_getbrdnr();
3684 return found
? : -ENOMEM
;
3685 brdp
->brdnr
= (unsigned int)brdnr
;
3686 eid
= inb(iobase
+ 0xc82);
3687 if (eid
== ECP_EISAID
)
3688 brdp
->brdtype
= BRD_ECPE
;
3689 else if (eid
== ONB_EISAID
)
3690 brdp
->brdtype
= BRD_ONBOARDE
;
3692 brdp
->brdtype
= BRD_UNKNOWN
;
3693 brdp
->iobase
= iobase
;
3694 outb(0x1, (iobase
+ 0xc84));
3695 if (stli_eisamemprobe(brdp
))
3696 outb(0, (iobase
+ 0xc84));
3697 if (stli_brdinit(brdp
) < 0) {
3702 stli_brds
[brdp
->brdnr
] = brdp
;
3705 for (i
= 0; i
< brdp
->nrports
; i
++)
3706 tty_register_device(stli_serial
,
3707 brdp
->brdnr
* STL_MAXPORTS
+ i
, NULL
);
3713 static inline int stli_findeisabrds(void) { return 0; }
3716 /*****************************************************************************/
3719 * Find the next available board number that is free.
3722 /*****************************************************************************/
3725 * We have a Stallion board. Allocate a board structure and
3726 * initialize it. Read its IO and MEMORY resources from PCI
3727 * configuration space.
3730 static int __devinit
stli_pciprobe(struct pci_dev
*pdev
,
3731 const struct pci_device_id
*ent
)
3733 struct stlibrd
*brdp
;
3735 int brdnr
, retval
= -EIO
;
3737 retval
= pci_enable_device(pdev
);
3740 brdp
= stli_allocbrd();
3745 mutex_lock(&stli_brdslock
);
3746 brdnr
= stli_getbrdnr();
3748 printk(KERN_INFO
"istallion: too many boards found, "
3749 "maximum supported %d\n", STL_MAXBRDS
);
3750 mutex_unlock(&stli_brdslock
);
3754 brdp
->brdnr
= (unsigned int)brdnr
;
3755 stli_brds
[brdp
->brdnr
] = brdp
;
3756 mutex_unlock(&stli_brdslock
);
3757 brdp
->brdtype
= BRD_ECPPCI
;
3759 * We have all resources from the board, so lets setup the actual
3760 * board structure now.
3762 brdp
->iobase
= pci_resource_start(pdev
, 3);
3763 brdp
->memaddr
= pci_resource_start(pdev
, 2);
3764 retval
= stli_brdinit(brdp
);
3768 brdp
->state
|= BST_PROBED
;
3769 pci_set_drvdata(pdev
, brdp
);
3772 brdp
->enable
= NULL
;
3773 brdp
->disable
= NULL
;
3775 for (i
= 0; i
< brdp
->nrports
; i
++)
3776 tty_register_device(stli_serial
, brdp
->brdnr
* STL_MAXPORTS
+ i
,
3781 stli_brds
[brdp
->brdnr
] = NULL
;
3788 static void __devexit
stli_pciremove(struct pci_dev
*pdev
)
3790 struct stlibrd
*brdp
= pci_get_drvdata(pdev
);
3792 stli_cleanup_ports(brdp
);
3794 iounmap(brdp
->membase
);
3795 if (brdp
->iosize
> 0)
3796 release_region(brdp
->iobase
, brdp
->iosize
);
3798 stli_brds
[brdp
->brdnr
] = NULL
;
3802 static struct pci_driver stli_pcidriver
= {
3803 .name
= "istallion",
3804 .id_table
= istallion_pci_tbl
,
3805 .probe
= stli_pciprobe
,
3806 .remove
= __devexit_p(stli_pciremove
)
3808 /*****************************************************************************/
3811 * Allocate a new board structure. Fill out the basic info in it.
3814 static struct stlibrd
*stli_allocbrd(void)
3816 struct stlibrd
*brdp
;
3818 brdp
= kzalloc(sizeof(struct stlibrd
), GFP_KERNEL
);
3820 printk(KERN_ERR
"istallion: failed to allocate memory "
3821 "(size=%Zd)\n", sizeof(struct stlibrd
));
3824 brdp
->magic
= STLI_BOARDMAGIC
;
3828 /*****************************************************************************/
3831 * Scan through all the boards in the configuration and see what we
3835 static int __init
stli_initbrds(void)
3837 struct stlibrd
*brdp
, *nxtbrdp
;
3838 struct stlconf conf
;
3839 unsigned int i
, j
, found
= 0;
3842 for (stli_nrbrds
= 0; stli_nrbrds
< ARRAY_SIZE(stli_brdsp
);
3844 memset(&conf
, 0, sizeof(conf
));
3845 if (stli_parsebrd(&conf
, stli_brdsp
[stli_nrbrds
]) == 0)
3847 if ((brdp
= stli_allocbrd()) == NULL
)
3849 brdp
->brdnr
= stli_nrbrds
;
3850 brdp
->brdtype
= conf
.brdtype
;
3851 brdp
->iobase
= conf
.ioaddr1
;
3852 brdp
->memaddr
= conf
.memaddr
;
3853 if (stli_brdinit(brdp
) < 0) {
3857 stli_brds
[brdp
->brdnr
] = brdp
;
3860 for (i
= 0; i
< brdp
->nrports
; i
++)
3861 tty_register_device(stli_serial
,
3862 brdp
->brdnr
* STL_MAXPORTS
+ i
, NULL
);
3865 retval
= stli_findeisabrds();
3870 * All found boards are initialized. Now for a little optimization, if
3871 * no boards are sharing the "shared memory" regions then we can just
3872 * leave them all enabled. This is in fact the usual case.
3875 if (stli_nrbrds
> 1) {
3876 for (i
= 0; (i
< stli_nrbrds
); i
++) {
3877 brdp
= stli_brds
[i
];
3880 for (j
= i
+ 1; (j
< stli_nrbrds
); j
++) {
3881 nxtbrdp
= stli_brds
[j
];
3882 if (nxtbrdp
== NULL
)
3884 if ((brdp
->membase
>= nxtbrdp
->membase
) &&
3885 (brdp
->membase
<= (nxtbrdp
->membase
+
3886 nxtbrdp
->memsize
- 1))) {
3894 if (stli_shared
== 0) {
3895 for (i
= 0; (i
< stli_nrbrds
); i
++) {
3896 brdp
= stli_brds
[i
];
3899 if (brdp
->state
& BST_FOUND
) {
3901 brdp
->enable
= NULL
;
3902 brdp
->disable
= NULL
;
3907 retval
= pci_register_driver(&stli_pcidriver
);
3908 if (retval
&& found
== 0) {
3909 printk(KERN_ERR
"Neither isa nor eisa cards found nor pci "
3910 "driver can be registered!\n");
3919 /*****************************************************************************/
3922 * Code to handle an "staliomem" read operation. This device is the
3923 * contents of the board shared memory. It is used for down loading
3924 * the slave image (and debugging :-)
3927 static ssize_t
stli_memread(struct file
*fp
, char __user
*buf
, size_t count
, loff_t
*offp
)
3929 unsigned long flags
;
3930 void __iomem
*memptr
;
3931 struct stlibrd
*brdp
;
3937 brdnr
= iminor(fp
->f_path
.dentry
->d_inode
);
3938 if (brdnr
>= stli_nrbrds
)
3940 brdp
= stli_brds
[brdnr
];
3943 if (brdp
->state
== 0)
3945 if (off
>= brdp
->memsize
|| off
+ count
< off
)
3948 size
= min(count
, (size_t)(brdp
->memsize
- off
));
3951 * Copy the data a page at a time
3954 p
= (void *)__get_free_page(GFP_KERNEL
);
3959 spin_lock_irqsave(&brd_lock
, flags
);
3961 memptr
= EBRDGETMEMPTR(brdp
, off
);
3962 n
= min(size
, (int)(brdp
->pagesize
- (((unsigned long) off
) % brdp
->pagesize
)));
3963 n
= min(n
, (int)PAGE_SIZE
);
3964 memcpy_fromio(p
, memptr
, n
);
3966 spin_unlock_irqrestore(&brd_lock
, flags
);
3967 if (copy_to_user(buf
, p
, n
)) {
3977 free_page((unsigned long)p
);
3981 /*****************************************************************************/
3984 * Code to handle an "staliomem" write operation. This device is the
3985 * contents of the board shared memory. It is used for down loading
3986 * the slave image (and debugging :-)
3988 * FIXME: copy under lock
3991 static ssize_t
stli_memwrite(struct file
*fp
, const char __user
*buf
, size_t count
, loff_t
*offp
)
3993 unsigned long flags
;
3994 void __iomem
*memptr
;
3995 struct stlibrd
*brdp
;
4002 brdnr
= iminor(fp
->f_path
.dentry
->d_inode
);
4004 if (brdnr
>= stli_nrbrds
)
4006 brdp
= stli_brds
[brdnr
];
4009 if (brdp
->state
== 0)
4011 if (off
>= brdp
->memsize
|| off
+ count
< off
)
4014 chbuf
= (char __user
*) buf
;
4015 size
= min(count
, (size_t)(brdp
->memsize
- off
));
4018 * Copy the data a page at a time
4021 p
= (void *)__get_free_page(GFP_KERNEL
);
4026 n
= min(size
, (int)(brdp
->pagesize
- (((unsigned long) off
) % brdp
->pagesize
)));
4027 n
= min(n
, (int)PAGE_SIZE
);
4028 if (copy_from_user(p
, chbuf
, n
)) {
4033 spin_lock_irqsave(&brd_lock
, flags
);
4035 memptr
= EBRDGETMEMPTR(brdp
, off
);
4036 memcpy_toio(memptr
, p
, n
);
4038 spin_unlock_irqrestore(&brd_lock
, flags
);
4044 free_page((unsigned long) p
);
4049 /*****************************************************************************/
4052 * Return the board stats structure to user app.
4055 static int stli_getbrdstats(combrd_t __user
*bp
)
4057 struct stlibrd
*brdp
;
4060 if (copy_from_user(&stli_brdstats
, bp
, sizeof(combrd_t
)))
4062 if (stli_brdstats
.brd
>= STL_MAXBRDS
)
4064 brdp
= stli_brds
[stli_brdstats
.brd
];
4068 memset(&stli_brdstats
, 0, sizeof(combrd_t
));
4069 stli_brdstats
.brd
= brdp
->brdnr
;
4070 stli_brdstats
.type
= brdp
->brdtype
;
4071 stli_brdstats
.hwid
= 0;
4072 stli_brdstats
.state
= brdp
->state
;
4073 stli_brdstats
.ioaddr
= brdp
->iobase
;
4074 stli_brdstats
.memaddr
= brdp
->memaddr
;
4075 stli_brdstats
.nrpanels
= brdp
->nrpanels
;
4076 stli_brdstats
.nrports
= brdp
->nrports
;
4077 for (i
= 0; (i
< brdp
->nrpanels
); i
++) {
4078 stli_brdstats
.panels
[i
].panel
= i
;
4079 stli_brdstats
.panels
[i
].hwid
= brdp
->panelids
[i
];
4080 stli_brdstats
.panels
[i
].nrports
= brdp
->panels
[i
];
4083 if (copy_to_user(bp
, &stli_brdstats
, sizeof(combrd_t
)))
4088 /*****************************************************************************/
4091 * Resolve the referenced port number into a port struct pointer.
4094 static struct stliport
*stli_getport(unsigned int brdnr
, unsigned int panelnr
,
4095 unsigned int portnr
)
4097 struct stlibrd
*brdp
;
4100 if (brdnr
>= STL_MAXBRDS
)
4102 brdp
= stli_brds
[brdnr
];
4105 for (i
= 0; (i
< panelnr
); i
++)
4106 portnr
+= brdp
->panels
[i
];
4107 if (portnr
>= brdp
->nrports
)
4109 return brdp
->ports
[portnr
];
4112 /*****************************************************************************/
4115 * Return the port stats structure to user app. A NULL port struct
4116 * pointer passed in means that we need to find out from the app
4117 * what port to get stats for (used through board control device).
4120 static int stli_portcmdstats(struct tty_struct
*tty
, struct stliport
*portp
)
4122 unsigned long flags
;
4123 struct stlibrd
*brdp
;
4126 memset(&stli_comstats
, 0, sizeof(comstats_t
));
4130 brdp
= stli_brds
[portp
->brdnr
];
4134 if (brdp
->state
& BST_STARTED
) {
4135 if ((rc
= stli_cmdwait(brdp
, portp
, A_GETSTATS
,
4136 &stli_cdkstats
, sizeof(asystats_t
), 1)) < 0)
4139 memset(&stli_cdkstats
, 0, sizeof(asystats_t
));
4142 stli_comstats
.brd
= portp
->brdnr
;
4143 stli_comstats
.panel
= portp
->panelnr
;
4144 stli_comstats
.port
= portp
->portnr
;
4145 stli_comstats
.state
= portp
->state
;
4146 stli_comstats
.flags
= portp
->port
.flags
;
4148 spin_lock_irqsave(&brd_lock
, flags
);
4150 if (portp
->port
.tty
== tty
) {
4151 stli_comstats
.ttystate
= tty
->flags
;
4152 stli_comstats
.rxbuffered
= -1;
4153 if (tty
->termios
!= NULL
) {
4154 stli_comstats
.cflags
= tty
->termios
->c_cflag
;
4155 stli_comstats
.iflags
= tty
->termios
->c_iflag
;
4156 stli_comstats
.oflags
= tty
->termios
->c_oflag
;
4157 stli_comstats
.lflags
= tty
->termios
->c_lflag
;
4161 spin_unlock_irqrestore(&brd_lock
, flags
);
4163 stli_comstats
.txtotal
= stli_cdkstats
.txchars
;
4164 stli_comstats
.rxtotal
= stli_cdkstats
.rxchars
+ stli_cdkstats
.ringover
;
4165 stli_comstats
.txbuffered
= stli_cdkstats
.txringq
;
4166 stli_comstats
.rxbuffered
+= stli_cdkstats
.rxringq
;
4167 stli_comstats
.rxoverrun
= stli_cdkstats
.overruns
;
4168 stli_comstats
.rxparity
= stli_cdkstats
.parity
;
4169 stli_comstats
.rxframing
= stli_cdkstats
.framing
;
4170 stli_comstats
.rxlost
= stli_cdkstats
.ringover
;
4171 stli_comstats
.rxbreaks
= stli_cdkstats
.rxbreaks
;
4172 stli_comstats
.txbreaks
= stli_cdkstats
.txbreaks
;
4173 stli_comstats
.txxon
= stli_cdkstats
.txstart
;
4174 stli_comstats
.txxoff
= stli_cdkstats
.txstop
;
4175 stli_comstats
.rxxon
= stli_cdkstats
.rxstart
;
4176 stli_comstats
.rxxoff
= stli_cdkstats
.rxstop
;
4177 stli_comstats
.rxrtsoff
= stli_cdkstats
.rtscnt
/ 2;
4178 stli_comstats
.rxrtson
= stli_cdkstats
.rtscnt
- stli_comstats
.rxrtsoff
;
4179 stli_comstats
.modem
= stli_cdkstats
.dcdcnt
;
4180 stli_comstats
.hwid
= stli_cdkstats
.hwid
;
4181 stli_comstats
.signals
= stli_mktiocm(stli_cdkstats
.signals
);
4186 /*****************************************************************************/
4189 * Return the port stats structure to user app. A NULL port struct
4190 * pointer passed in means that we need to find out from the app
4191 * what port to get stats for (used through board control device).
4194 static int stli_getportstats(struct tty_struct
*tty
, struct stliport
*portp
,
4195 comstats_t __user
*cp
)
4197 struct stlibrd
*brdp
;
4201 if (copy_from_user(&stli_comstats
, cp
, sizeof(comstats_t
)))
4203 portp
= stli_getport(stli_comstats
.brd
, stli_comstats
.panel
,
4204 stli_comstats
.port
);
4209 brdp
= stli_brds
[portp
->brdnr
];
4213 if ((rc
= stli_portcmdstats(tty
, portp
)) < 0)
4216 return copy_to_user(cp
, &stli_comstats
, sizeof(comstats_t
)) ?
4220 /*****************************************************************************/
4223 * Clear the port stats structure. We also return it zeroed out...
4226 static int stli_clrportstats(struct stliport
*portp
, comstats_t __user
*cp
)
4228 struct stlibrd
*brdp
;
4232 if (copy_from_user(&stli_comstats
, cp
, sizeof(comstats_t
)))
4234 portp
= stli_getport(stli_comstats
.brd
, stli_comstats
.panel
,
4235 stli_comstats
.port
);
4240 brdp
= stli_brds
[portp
->brdnr
];
4244 if (brdp
->state
& BST_STARTED
) {
4245 if ((rc
= stli_cmdwait(brdp
, portp
, A_CLEARSTATS
, NULL
, 0, 0)) < 0)
4249 memset(&stli_comstats
, 0, sizeof(comstats_t
));
4250 stli_comstats
.brd
= portp
->brdnr
;
4251 stli_comstats
.panel
= portp
->panelnr
;
4252 stli_comstats
.port
= portp
->portnr
;
4254 if (copy_to_user(cp
, &stli_comstats
, sizeof(comstats_t
)))
4259 /*****************************************************************************/
4262 * Return the entire driver ports structure to a user app.
4265 static int stli_getportstruct(struct stliport __user
*arg
)
4267 struct stliport stli_dummyport
;
4268 struct stliport
*portp
;
4270 if (copy_from_user(&stli_dummyport
, arg
, sizeof(struct stliport
)))
4272 portp
= stli_getport(stli_dummyport
.brdnr
, stli_dummyport
.panelnr
,
4273 stli_dummyport
.portnr
);
4276 if (copy_to_user(arg
, portp
, sizeof(struct stliport
)))
4281 /*****************************************************************************/
4284 * Return the entire driver board structure to a user app.
4287 static int stli_getbrdstruct(struct stlibrd __user
*arg
)
4289 struct stlibrd stli_dummybrd
;
4290 struct stlibrd
*brdp
;
4292 if (copy_from_user(&stli_dummybrd
, arg
, sizeof(struct stlibrd
)))
4294 if (stli_dummybrd
.brdnr
>= STL_MAXBRDS
)
4296 brdp
= stli_brds
[stli_dummybrd
.brdnr
];
4299 if (copy_to_user(arg
, brdp
, sizeof(struct stlibrd
)))
4304 /*****************************************************************************/
4307 * The "staliomem" device is also required to do some special operations on
4308 * the board. We need to be able to send an interrupt to the board,
4309 * reset it, and start/stop it.
4312 static int stli_memioctl(struct inode
*ip
, struct file
*fp
, unsigned int cmd
, unsigned long arg
)
4314 struct stlibrd
*brdp
;
4315 int brdnr
, rc
, done
;
4316 void __user
*argp
= (void __user
*)arg
;
4319 * First up handle the board independent ioctls.
4327 case COM_GETPORTSTATS
:
4328 rc
= stli_getportstats(NULL
, NULL
, argp
);
4331 case COM_CLRPORTSTATS
:
4332 rc
= stli_clrportstats(NULL
, argp
);
4335 case COM_GETBRDSTATS
:
4336 rc
= stli_getbrdstats(argp
);
4340 rc
= stli_getportstruct(argp
);
4344 rc
= stli_getbrdstruct(argp
);
4354 * Now handle the board specific ioctls. These all depend on the
4355 * minor number of the device they were called from.
4358 if (brdnr
>= STL_MAXBRDS
)
4360 brdp
= stli_brds
[brdnr
];
4363 if (brdp
->state
== 0)
4373 rc
= stli_startbrd(brdp
);
4376 brdp
->state
&= ~BST_STARTED
;
4379 brdp
->state
&= ~BST_STARTED
;
4381 if (stli_shared
== 0) {
4382 if (brdp
->reenable
!= NULL
)
4383 (* brdp
->reenable
)(brdp
);
4394 static const struct tty_operations stli_ops
= {
4396 .close
= stli_close
,
4397 .write
= stli_write
,
4398 .put_char
= stli_putchar
,
4399 .flush_chars
= stli_flushchars
,
4400 .write_room
= stli_writeroom
,
4401 .chars_in_buffer
= stli_charsinbuffer
,
4402 .ioctl
= stli_ioctl
,
4403 .set_termios
= stli_settermios
,
4404 .throttle
= stli_throttle
,
4405 .unthrottle
= stli_unthrottle
,
4407 .start
= stli_start
,
4408 .hangup
= stli_hangup
,
4409 .flush_buffer
= stli_flushbuffer
,
4410 .break_ctl
= stli_breakctl
,
4411 .wait_until_sent
= stli_waituntilsent
,
4412 .send_xchar
= stli_sendxchar
,
4413 .tiocmget
= stli_tiocmget
,
4414 .tiocmset
= stli_tiocmset
,
4415 .proc_fops
= &stli_proc_fops
,
4418 static const struct tty_port_operations stli_port_ops
= {
4419 .carrier_raised
= stli_carrier_raised
,
4420 .dtr_rts
= stli_dtr_rts
,
4423 /*****************************************************************************/
4425 * Loadable module initialization stuff.
4428 static void istallion_cleanup_isa(void)
4430 struct stlibrd
*brdp
;
4433 for (j
= 0; (j
< stli_nrbrds
); j
++) {
4434 if ((brdp
= stli_brds
[j
]) == NULL
|| (brdp
->state
& BST_PROBED
))
4437 stli_cleanup_ports(brdp
);
4439 iounmap(brdp
->membase
);
4440 if (brdp
->iosize
> 0)
4441 release_region(brdp
->iobase
, brdp
->iosize
);
4443 stli_brds
[j
] = NULL
;
4447 static int __init
istallion_module_init(void)
4452 printk(KERN_INFO
"%s: version %s\n", stli_drvtitle
, stli_drvversion
);
4454 spin_lock_init(&stli_lock
);
4455 spin_lock_init(&brd_lock
);
4457 stli_txcookbuf
= kmalloc(STLI_TXBUFSIZE
, GFP_KERNEL
);
4458 if (!stli_txcookbuf
) {
4459 printk(KERN_ERR
"istallion: failed to allocate memory "
4460 "(size=%d)\n", STLI_TXBUFSIZE
);
4465 stli_serial
= alloc_tty_driver(STL_MAXBRDS
* STL_MAXPORTS
);
4471 stli_serial
->owner
= THIS_MODULE
;
4472 stli_serial
->driver_name
= stli_drvname
;
4473 stli_serial
->name
= stli_serialname
;
4474 stli_serial
->major
= STL_SERIALMAJOR
;
4475 stli_serial
->minor_start
= 0;
4476 stli_serial
->type
= TTY_DRIVER_TYPE_SERIAL
;
4477 stli_serial
->subtype
= SERIAL_TYPE_NORMAL
;
4478 stli_serial
->init_termios
= stli_deftermios
;
4479 stli_serial
->flags
= TTY_DRIVER_REAL_RAW
| TTY_DRIVER_DYNAMIC_DEV
;
4480 tty_set_operations(stli_serial
, &stli_ops
);
4482 retval
= tty_register_driver(stli_serial
);
4484 printk(KERN_ERR
"istallion: failed to register serial driver\n");
4488 retval
= stli_initbrds();
4493 * Set up a character driver for the shared memory region. We need this
4494 * to down load the slave code image. Also it is a useful debugging tool.
4496 retval
= register_chrdev(STL_SIOMEMMAJOR
, "staliomem", &stli_fsiomem
);
4498 printk(KERN_ERR
"istallion: failed to register serial memory "
4503 istallion_class
= class_create(THIS_MODULE
, "staliomem");
4504 for (i
= 0; i
< 4; i
++)
4505 device_create(istallion_class
, NULL
, MKDEV(STL_SIOMEMMAJOR
, i
),
4506 NULL
, "staliomem%d", i
);
4510 pci_unregister_driver(&stli_pcidriver
);
4511 istallion_cleanup_isa();
4513 tty_unregister_driver(stli_serial
);
4515 put_tty_driver(stli_serial
);
4517 kfree(stli_txcookbuf
);
4522 /*****************************************************************************/
4524 static void __exit
istallion_module_exit(void)
4528 printk(KERN_INFO
"Unloading %s: version %s\n", stli_drvtitle
,
4533 del_timer_sync(&stli_timerlist
);
4536 unregister_chrdev(STL_SIOMEMMAJOR
, "staliomem");
4538 for (j
= 0; j
< 4; j
++)
4539 device_destroy(istallion_class
, MKDEV(STL_SIOMEMMAJOR
, j
));
4540 class_destroy(istallion_class
);
4542 pci_unregister_driver(&stli_pcidriver
);
4543 istallion_cleanup_isa();
4545 tty_unregister_driver(stli_serial
);
4546 put_tty_driver(stli_serial
);
4548 kfree(stli_txcookbuf
);
4551 module_init(istallion_module_init
);
4552 module_exit(istallion_module_exit
);