1 /*****************************************************************************/
4 * istallion.c -- stallion intelligent multiport serial driver.
6 * Copyright (C) 1996-1999 Stallion Technologies
7 * Copyright (C) 1994-1996 Greg Ungerer.
9 * This code is loosely based on the Linux serial driver, written by
10 * Linus Torvalds, Theodore T'so and others.
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 /*****************************************************************************/
29 #include <linux/config.h>
30 #include <linux/module.h>
31 #include <linux/slab.h>
32 #include <linux/interrupt.h>
33 #include <linux/tty.h>
34 #include <linux/tty_flip.h>
35 #include <linux/serial.h>
36 #include <linux/cdk.h>
37 #include <linux/comstats.h>
38 #include <linux/istallion.h>
39 #include <linux/ioport.h>
40 #include <linux/delay.h>
41 #include <linux/init.h>
42 #include <linux/devfs_fs_kernel.h>
43 #include <linux/device.h>
44 #include <linux/wait.h>
47 #include <asm/uaccess.h>
50 #include <linux/pci.h>
53 /*****************************************************************************/
56 * Define different board types. Not all of the following board types
57 * are supported by this driver. But I will use the standard "assigned"
58 * board numbers. Currently supported boards are abbreviated as:
59 * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and
63 #define BRD_STALLION 1
65 #define BRD_ONBOARD2 3
68 #define BRD_BRUMBY16 6
69 #define BRD_ONBOARDE 7
70 #define BRD_ONBOARD32 9
71 #define BRD_ONBOARD2_32 10
72 #define BRD_ONBOARDRS 11
80 #define BRD_ECH64PCI 27
81 #define BRD_EASYIOPCI 28
84 #define BRD_BRUMBY BRD_BRUMBY4
87 * Define a configuration structure to hold the board configuration.
88 * Need to set this up in the code (for now) with the boards that are
89 * to be configured into the system. This is what needs to be modified
90 * when adding/removing/modifying boards. Each line entry in the
91 * stli_brdconf[] array is a board. Each line contains io/irq/memory
92 * ranges for that board (as well as what type of board it is).
94 * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },
95 * This line will configure an EasyConnection 8/64 at io address 2a0,
96 * and shared memory address of cc000. Multiple EasyConnection 8/64
97 * boards can share the same shared memory address space. No interrupt
98 * is required for this board type.
100 * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 },
101 * This line will configure an EasyConnection 8/64 EISA in slot 5 and
102 * shared memory address of 0x80000000 (2 GByte). Multiple
103 * EasyConnection 8/64 EISA boards can share the same shared memory
104 * address space. No interrupt is required for this board type.
106 * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 },
107 * This line will configure an ONboard (ISA type) at io address 240,
108 * and shared memory address of d0000. Multiple ONboards can share
109 * the same shared memory address space. No interrupt required.
111 * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 },
112 * This line will configure a Brumby board (any number of ports!) at
113 * io address 360 and shared memory address of c8000. All Brumby boards
114 * configured into a system must have their own separate io and memory
115 * addresses. No interrupt is required.
117 * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 },
118 * This line will configure an original Stallion board at io address 330
119 * and shared memory address d0000 (this would only be valid for a "V4.0"
120 * or Rev.O Stallion board). All Stallion boards configured into the
121 * system must have their own separate io and memory addresses. No
122 * interrupt is required.
129 unsigned long memaddr
;
134 static stlconf_t stli_brdconf
[] = {
135 /*{ BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },*/
138 static int stli_nrbrds
= ARRAY_SIZE(stli_brdconf
);
141 * There is some experimental EISA board detection code in this driver.
142 * By default it is disabled, but for those that want to try it out,
143 * then set the define below to be 1.
145 #define STLI_EISAPROBE 0
147 /*****************************************************************************/
150 * Define some important driver characteristics. Device major numbers
151 * allocated as per Linux Device Registry.
153 #ifndef STL_SIOMEMMAJOR
154 #define STL_SIOMEMMAJOR 28
156 #ifndef STL_SERIALMAJOR
157 #define STL_SERIALMAJOR 24
159 #ifndef STL_CALLOUTMAJOR
160 #define STL_CALLOUTMAJOR 25
163 /*****************************************************************************/
166 * Define our local driver identity first. Set up stuff to deal with
167 * all the local structures required by a serial tty driver.
169 static char *stli_drvtitle
= "Stallion Intelligent Multiport Serial Driver";
170 static char *stli_drvname
= "istallion";
171 static char *stli_drvversion
= "5.6.0";
172 static char *stli_serialname
= "ttyE";
174 static struct tty_driver
*stli_serial
;
177 * We will need to allocate a temporary write buffer for chars that
178 * come direct from user space. The problem is that a copy from user
179 * space might cause a page fault (typically on a system that is
180 * swapping!). All ports will share one buffer - since if the system
181 * is already swapping a shared buffer won't make things any worse.
183 static char *stli_tmpwritebuf
;
184 static DECLARE_MUTEX(stli_tmpwritesem
);
186 #define STLI_TXBUFSIZE 4096
189 * Use a fast local buffer for cooked characters. Typically a whole
190 * bunch of cooked characters come in for a port, 1 at a time. So we
191 * save those up into a local buffer, then write out the whole lot
192 * with a large memcpy. Just use 1 buffer for all ports, since its
193 * use it is only need for short periods of time by each port.
195 static char *stli_txcookbuf
;
196 static int stli_txcooksize
;
197 static int stli_txcookrealsize
;
198 static struct tty_struct
*stli_txcooktty
;
201 * Define a local default termios struct. All ports will be created
202 * with this termios initially. Basically all it defines is a raw port
203 * at 9600 baud, 8 data bits, no parity, 1 stop bit.
205 static struct termios stli_deftermios
= {
206 .c_cflag
= (B9600
| CS8
| CREAD
| HUPCL
| CLOCAL
),
211 * Define global stats structures. Not used often, and can be
212 * re-used for each stats call.
214 static comstats_t stli_comstats
;
215 static combrd_t stli_brdstats
;
216 static asystats_t stli_cdkstats
;
217 static stlibrd_t stli_dummybrd
;
218 static stliport_t stli_dummyport
;
220 /*****************************************************************************/
222 static stlibrd_t
*stli_brds
[STL_MAXBRDS
];
224 static int stli_shared
;
227 * Per board state flags. Used with the state field of the board struct.
228 * Not really much here... All we need to do is keep track of whether
229 * the board has been detected, and whether it is actually running a slave
232 #define BST_FOUND 0x1
233 #define BST_STARTED 0x2
236 * Define the set of port state flags. These are marked for internal
237 * state purposes only, usually to do with the state of communications
238 * with the slave. Most of them need to be updated atomically, so always
239 * use the bit setting operations (unless protected by cli/sti).
241 #define ST_INITIALIZING 1
247 #define ST_DOFLUSHRX 7
248 #define ST_DOFLUSHTX 8
251 #define ST_GETSIGS 11
254 * Define an array of board names as printable strings. Handy for
255 * referencing boards when printing trace and stuff.
257 static char *stli_brdnames
[] = {
290 /*****************************************************************************/
294 * Define some string labels for arguments passed from the module
295 * load line. These allow for easy board definitions, and easy
296 * modification of the io, memory and irq resoucres.
299 static char *board0
[8];
300 static char *board1
[8];
301 static char *board2
[8];
302 static char *board3
[8];
304 static char **stli_brdsp
[] = {
312 * Define a set of common board names, and types. This is used to
313 * parse any module arguments.
316 typedef struct stlibrdtype
{
321 static stlibrdtype_t stli_brdstr
[] = {
322 { "stallion", BRD_STALLION
},
323 { "1", BRD_STALLION
},
324 { "brumby", BRD_BRUMBY
},
325 { "brumby4", BRD_BRUMBY
},
326 { "brumby/4", BRD_BRUMBY
},
327 { "brumby-4", BRD_BRUMBY
},
328 { "brumby8", BRD_BRUMBY
},
329 { "brumby/8", BRD_BRUMBY
},
330 { "brumby-8", BRD_BRUMBY
},
331 { "brumby16", BRD_BRUMBY
},
332 { "brumby/16", BRD_BRUMBY
},
333 { "brumby-16", BRD_BRUMBY
},
335 { "onboard2", BRD_ONBOARD2
},
336 { "onboard-2", BRD_ONBOARD2
},
337 { "onboard/2", BRD_ONBOARD2
},
338 { "onboard-mc", BRD_ONBOARD2
},
339 { "onboard/mc", BRD_ONBOARD2
},
340 { "onboard-mca", BRD_ONBOARD2
},
341 { "onboard/mca", BRD_ONBOARD2
},
342 { "3", BRD_ONBOARD2
},
343 { "onboard", BRD_ONBOARD
},
344 { "onboardat", BRD_ONBOARD
},
345 { "4", BRD_ONBOARD
},
346 { "onboarde", BRD_ONBOARDE
},
347 { "onboard-e", BRD_ONBOARDE
},
348 { "onboard/e", BRD_ONBOARDE
},
349 { "onboard-ei", BRD_ONBOARDE
},
350 { "onboard/ei", BRD_ONBOARDE
},
351 { "7", BRD_ONBOARDE
},
353 { "ecpat", BRD_ECP
},
354 { "ec8/64", BRD_ECP
},
355 { "ec8/64-at", BRD_ECP
},
356 { "ec8/64-isa", BRD_ECP
},
358 { "ecpe", BRD_ECPE
},
359 { "ecpei", BRD_ECPE
},
360 { "ec8/64-e", BRD_ECPE
},
361 { "ec8/64-ei", BRD_ECPE
},
363 { "ecpmc", BRD_ECPMC
},
364 { "ec8/64-mc", BRD_ECPMC
},
365 { "ec8/64-mca", BRD_ECPMC
},
367 { "ecppci", BRD_ECPPCI
},
368 { "ec/ra", BRD_ECPPCI
},
369 { "ec/ra-pc", BRD_ECPPCI
},
370 { "ec/ra-pci", BRD_ECPPCI
},
371 { "29", BRD_ECPPCI
},
375 * Define the module agruments.
377 MODULE_AUTHOR("Greg Ungerer");
378 MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver");
379 MODULE_LICENSE("GPL");
382 MODULE_PARM(board0
, "1-3s");
383 MODULE_PARM_DESC(board0
, "Board 0 config -> name[,ioaddr[,memaddr]");
384 MODULE_PARM(board1
, "1-3s");
385 MODULE_PARM_DESC(board1
, "Board 1 config -> name[,ioaddr[,memaddr]");
386 MODULE_PARM(board2
, "1-3s");
387 MODULE_PARM_DESC(board2
, "Board 2 config -> name[,ioaddr[,memaddr]");
388 MODULE_PARM(board3
, "1-3s");
389 MODULE_PARM_DESC(board3
, "Board 3 config -> name[,ioaddr[,memaddr]");
394 * Set up a default memory address table for EISA board probing.
395 * The default addresses are all bellow 1Mbyte, which has to be the
396 * case anyway. They should be safe, since we only read values from
397 * them, and interrupts are disabled while we do it. If the higher
398 * memory support is compiled in then we also try probing around
399 * the 1Gb, 2Gb and 3Gb areas as well...
401 static unsigned long stli_eisamemprobeaddrs
[] = {
402 0xc0000, 0xd0000, 0xe0000, 0xf0000,
403 0x80000000, 0x80010000, 0x80020000, 0x80030000,
404 0x40000000, 0x40010000, 0x40020000, 0x40030000,
405 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000,
406 0xff000000, 0xff010000, 0xff020000, 0xff030000,
409 static int stli_eisamempsize
= ARRAY_SIZE(stli_eisamemprobeaddrs
);
412 * Define the Stallion PCI vendor and device IDs.
415 #ifndef PCI_VENDOR_ID_STALLION
416 #define PCI_VENDOR_ID_STALLION 0x124d
418 #ifndef PCI_DEVICE_ID_ECRA
419 #define PCI_DEVICE_ID_ECRA 0x0004
422 static struct pci_device_id istallion_pci_tbl
[] = {
423 { PCI_VENDOR_ID_STALLION
, PCI_DEVICE_ID_ECRA
, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0 },
426 MODULE_DEVICE_TABLE(pci
, istallion_pci_tbl
);
428 #endif /* CONFIG_PCI */
430 /*****************************************************************************/
433 * Hardware configuration info for ECP boards. These defines apply
434 * to the directly accessible io ports of the ECP. There is a set of
435 * defines for each ECP board type, ISA, EISA, MCA and PCI.
439 #define ECP_MEMSIZE (128 * 1024)
440 #define ECP_PCIMEMSIZE (256 * 1024)
442 #define ECP_ATPAGESIZE (4 * 1024)
443 #define ECP_MCPAGESIZE (4 * 1024)
444 #define ECP_EIPAGESIZE (64 * 1024)
445 #define ECP_PCIPAGESIZE (64 * 1024)
447 #define STL_EISAID 0x8c4e
450 * Important defines for the ISA class of ECP board.
453 #define ECP_ATCONFR 1
454 #define ECP_ATMEMAR 2
455 #define ECP_ATMEMPR 3
456 #define ECP_ATSTOP 0x1
457 #define ECP_ATINTENAB 0x10
458 #define ECP_ATENABLE 0x20
459 #define ECP_ATDISABLE 0x00
460 #define ECP_ATADDRMASK 0x3f000
461 #define ECP_ATADDRSHFT 12
464 * Important defines for the EISA class of ECP board.
467 #define ECP_EIMEMARL 1
468 #define ECP_EICONFR 2
469 #define ECP_EIMEMARH 3
470 #define ECP_EIENABLE 0x1
471 #define ECP_EIDISABLE 0x0
472 #define ECP_EISTOP 0x4
473 #define ECP_EIEDGE 0x00
474 #define ECP_EILEVEL 0x80
475 #define ECP_EIADDRMASKL 0x00ff0000
476 #define ECP_EIADDRSHFTL 16
477 #define ECP_EIADDRMASKH 0xff000000
478 #define ECP_EIADDRSHFTH 24
479 #define ECP_EIBRDENAB 0xc84
481 #define ECP_EISAID 0x4
484 * Important defines for the Micro-channel class of ECP board.
485 * (It has a lot in common with the ISA boards.)
488 #define ECP_MCCONFR 1
489 #define ECP_MCSTOP 0x20
490 #define ECP_MCENABLE 0x80
491 #define ECP_MCDISABLE 0x00
494 * Important defines for the PCI class of ECP board.
495 * (It has a lot in common with the other ECP boards.)
497 #define ECP_PCIIREG 0
498 #define ECP_PCICONFR 1
499 #define ECP_PCISTOP 0x01
502 * Hardware configuration info for ONboard and Brumby boards. These
503 * defines apply to the directly accessible io ports of these boards.
505 #define ONB_IOSIZE 16
506 #define ONB_MEMSIZE (64 * 1024)
507 #define ONB_ATPAGESIZE (64 * 1024)
508 #define ONB_MCPAGESIZE (64 * 1024)
509 #define ONB_EIMEMSIZE (128 * 1024)
510 #define ONB_EIPAGESIZE (64 * 1024)
513 * Important defines for the ISA class of ONboard board.
516 #define ONB_ATMEMAR 1
517 #define ONB_ATCONFR 2
518 #define ONB_ATSTOP 0x4
519 #define ONB_ATENABLE 0x01
520 #define ONB_ATDISABLE 0x00
521 #define ONB_ATADDRMASK 0xff0000
522 #define ONB_ATADDRSHFT 16
524 #define ONB_MEMENABLO 0
525 #define ONB_MEMENABHI 0x02
528 * Important defines for the EISA class of ONboard board.
531 #define ONB_EIMEMARL 1
532 #define ONB_EICONFR 2
533 #define ONB_EIMEMARH 3
534 #define ONB_EIENABLE 0x1
535 #define ONB_EIDISABLE 0x0
536 #define ONB_EISTOP 0x4
537 #define ONB_EIEDGE 0x00
538 #define ONB_EILEVEL 0x80
539 #define ONB_EIADDRMASKL 0x00ff0000
540 #define ONB_EIADDRSHFTL 16
541 #define ONB_EIADDRMASKH 0xff000000
542 #define ONB_EIADDRSHFTH 24
543 #define ONB_EIBRDENAB 0xc84
545 #define ONB_EISAID 0x1
548 * Important defines for the Brumby boards. They are pretty simple,
549 * there is not much that is programmably configurable.
551 #define BBY_IOSIZE 16
552 #define BBY_MEMSIZE (64 * 1024)
553 #define BBY_PAGESIZE (16 * 1024)
556 #define BBY_ATCONFR 1
557 #define BBY_ATSTOP 0x4
560 * Important defines for the Stallion boards. They are pretty simple,
561 * there is not much that is programmably configurable.
563 #define STAL_IOSIZE 16
564 #define STAL_MEMSIZE (64 * 1024)
565 #define STAL_PAGESIZE (64 * 1024)
568 * Define the set of status register values for EasyConnection panels.
569 * The signature will return with the status value for each panel. From
570 * this we can determine what is attached to the board - before we have
571 * actually down loaded any code to it.
573 #define ECH_PNLSTATUS 2
574 #define ECH_PNL16PORT 0x20
575 #define ECH_PNLIDMASK 0x07
576 #define ECH_PNLXPID 0x40
577 #define ECH_PNLINTRPEND 0x80
580 * Define some macros to do things to the board. Even those these boards
581 * are somewhat related there is often significantly different ways of
582 * doing some operation on it (like enable, paging, reset, etc). So each
583 * board class has a set of functions which do the commonly required
584 * operations. The macros below basically just call these functions,
585 * generally checking for a NULL function - which means that the board
586 * needs nothing done to it to achieve this operation!
588 #define EBRDINIT(brdp) \
589 if (brdp->init != NULL) \
592 #define EBRDENABLE(brdp) \
593 if (brdp->enable != NULL) \
594 (* brdp->enable)(brdp);
596 #define EBRDDISABLE(brdp) \
597 if (brdp->disable != NULL) \
598 (* brdp->disable)(brdp);
600 #define EBRDINTR(brdp) \
601 if (brdp->intr != NULL) \
602 (* brdp->intr)(brdp);
604 #define EBRDRESET(brdp) \
605 if (brdp->reset != NULL) \
606 (* brdp->reset)(brdp);
608 #define EBRDGETMEMPTR(brdp,offset) \
609 (* brdp->getmemptr)(brdp, offset, __LINE__)
612 * Define the maximal baud rate, and the default baud base for ports.
614 #define STL_MAXBAUD 460800
615 #define STL_BAUDBASE 115200
616 #define STL_CLOSEDELAY (5 * HZ / 10)
618 /*****************************************************************************/
621 * Define macros to extract a brd or port number from a minor number.
623 #define MINOR2BRD(min) (((min) & 0xc0) >> 6)
624 #define MINOR2PORT(min) ((min) & 0x3f)
627 * Define a baud rate table that converts termios baud rate selector
628 * into the actual baud rate value. All baud rate calculations are based
629 * on the actual baud rate required.
631 static unsigned int stli_baudrates
[] = {
632 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
633 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600
636 /*****************************************************************************/
639 * Define some handy local macros...
642 #define MIN(a,b) (((a) <= (b)) ? (a) : (b))
645 #define TOLOWER(x) ((((x) >= 'A') && ((x) <= 'Z')) ? ((x) + 0x20) : (x))
647 /*****************************************************************************/
650 * Prototype all functions in this driver!
654 static void stli_argbrds(void);
655 static int stli_parsebrd(stlconf_t
*confp
, char **argp
);
657 static unsigned long stli_atol(char *str
);
661 static int stli_open(struct tty_struct
*tty
, struct file
*filp
);
662 static void stli_close(struct tty_struct
*tty
, struct file
*filp
);
663 static int stli_write(struct tty_struct
*tty
, const unsigned char *buf
, int count
);
664 static void stli_putchar(struct tty_struct
*tty
, unsigned char ch
);
665 static void stli_flushchars(struct tty_struct
*tty
);
666 static int stli_writeroom(struct tty_struct
*tty
);
667 static int stli_charsinbuffer(struct tty_struct
*tty
);
668 static int stli_ioctl(struct tty_struct
*tty
, struct file
*file
, unsigned int cmd
, unsigned long arg
);
669 static void stli_settermios(struct tty_struct
*tty
, struct termios
*old
);
670 static void stli_throttle(struct tty_struct
*tty
);
671 static void stli_unthrottle(struct tty_struct
*tty
);
672 static void stli_stop(struct tty_struct
*tty
);
673 static void stli_start(struct tty_struct
*tty
);
674 static void stli_flushbuffer(struct tty_struct
*tty
);
675 static void stli_breakctl(struct tty_struct
*tty
, int state
);
676 static void stli_waituntilsent(struct tty_struct
*tty
, int timeout
);
677 static void stli_sendxchar(struct tty_struct
*tty
, char ch
);
678 static void stli_hangup(struct tty_struct
*tty
);
679 static int stli_portinfo(stlibrd_t
*brdp
, stliport_t
*portp
, int portnr
, char *pos
);
681 static int stli_brdinit(stlibrd_t
*brdp
);
682 static int stli_startbrd(stlibrd_t
*brdp
);
683 static ssize_t
stli_memread(struct file
*fp
, char __user
*buf
, size_t count
, loff_t
*offp
);
684 static ssize_t
stli_memwrite(struct file
*fp
, const char __user
*buf
, size_t count
, loff_t
*offp
);
685 static int stli_memioctl(struct inode
*ip
, struct file
*fp
, unsigned int cmd
, unsigned long arg
);
686 static void stli_brdpoll(stlibrd_t
*brdp
, volatile cdkhdr_t
*hdrp
);
687 static void stli_poll(unsigned long arg
);
688 static int stli_hostcmd(stlibrd_t
*brdp
, stliport_t
*portp
);
689 static int stli_initopen(stlibrd_t
*brdp
, stliport_t
*portp
);
690 static int stli_rawopen(stlibrd_t
*brdp
, stliport_t
*portp
, unsigned long arg
, int wait
);
691 static int stli_rawclose(stlibrd_t
*brdp
, stliport_t
*portp
, unsigned long arg
, int wait
);
692 static int stli_waitcarrier(stlibrd_t
*brdp
, stliport_t
*portp
, struct file
*filp
);
693 static void stli_dohangup(void *arg
);
694 static int stli_setport(stliport_t
*portp
);
695 static int stli_cmdwait(stlibrd_t
*brdp
, stliport_t
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
);
696 static void stli_sendcmd(stlibrd_t
*brdp
, stliport_t
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
);
697 static void stli_dodelaycmd(stliport_t
*portp
, volatile cdkctrl_t
*cp
);
698 static void stli_mkasyport(stliport_t
*portp
, asyport_t
*pp
, struct termios
*tiosp
);
699 static void stli_mkasysigs(asysigs_t
*sp
, int dtr
, int rts
);
700 static long stli_mktiocm(unsigned long sigvalue
);
701 static void stli_read(stlibrd_t
*brdp
, stliport_t
*portp
);
702 static int stli_getserial(stliport_t
*portp
, struct serial_struct __user
*sp
);
703 static int stli_setserial(stliport_t
*portp
, struct serial_struct __user
*sp
);
704 static int stli_getbrdstats(combrd_t __user
*bp
);
705 static int stli_getportstats(stliport_t
*portp
, comstats_t __user
*cp
);
706 static int stli_portcmdstats(stliport_t
*portp
);
707 static int stli_clrportstats(stliport_t
*portp
, comstats_t __user
*cp
);
708 static int stli_getportstruct(stliport_t __user
*arg
);
709 static int stli_getbrdstruct(stlibrd_t __user
*arg
);
710 static void *stli_memalloc(int len
);
711 static stlibrd_t
*stli_allocbrd(void);
713 static void stli_ecpinit(stlibrd_t
*brdp
);
714 static void stli_ecpenable(stlibrd_t
*brdp
);
715 static void stli_ecpdisable(stlibrd_t
*brdp
);
716 static char *stli_ecpgetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
);
717 static void stli_ecpreset(stlibrd_t
*brdp
);
718 static void stli_ecpintr(stlibrd_t
*brdp
);
719 static void stli_ecpeiinit(stlibrd_t
*brdp
);
720 static void stli_ecpeienable(stlibrd_t
*brdp
);
721 static void stli_ecpeidisable(stlibrd_t
*brdp
);
722 static char *stli_ecpeigetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
);
723 static void stli_ecpeireset(stlibrd_t
*brdp
);
724 static void stli_ecpmcenable(stlibrd_t
*brdp
);
725 static void stli_ecpmcdisable(stlibrd_t
*brdp
);
726 static char *stli_ecpmcgetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
);
727 static void stli_ecpmcreset(stlibrd_t
*brdp
);
728 static void stli_ecppciinit(stlibrd_t
*brdp
);
729 static char *stli_ecppcigetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
);
730 static void stli_ecppcireset(stlibrd_t
*brdp
);
732 static void stli_onbinit(stlibrd_t
*brdp
);
733 static void stli_onbenable(stlibrd_t
*brdp
);
734 static void stli_onbdisable(stlibrd_t
*brdp
);
735 static char *stli_onbgetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
);
736 static void stli_onbreset(stlibrd_t
*brdp
);
737 static void stli_onbeinit(stlibrd_t
*brdp
);
738 static void stli_onbeenable(stlibrd_t
*brdp
);
739 static void stli_onbedisable(stlibrd_t
*brdp
);
740 static char *stli_onbegetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
);
741 static void stli_onbereset(stlibrd_t
*brdp
);
742 static void stli_bbyinit(stlibrd_t
*brdp
);
743 static char *stli_bbygetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
);
744 static void stli_bbyreset(stlibrd_t
*brdp
);
745 static void stli_stalinit(stlibrd_t
*brdp
);
746 static char *stli_stalgetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
);
747 static void stli_stalreset(stlibrd_t
*brdp
);
749 static stliport_t
*stli_getport(int brdnr
, int panelnr
, int portnr
);
751 static int stli_initecp(stlibrd_t
*brdp
);
752 static int stli_initonb(stlibrd_t
*brdp
);
753 static int stli_eisamemprobe(stlibrd_t
*brdp
);
754 static int stli_initports(stlibrd_t
*brdp
);
757 static int stli_initpcibrd(int brdtype
, struct pci_dev
*devp
);
760 /*****************************************************************************/
763 * Define the driver info for a user level shared memory device. This
764 * device will work sort of like the /dev/kmem device - except that it
765 * will give access to the shared memory on the Stallion intelligent
766 * board. This is also a very useful debugging tool.
768 static struct file_operations stli_fsiomem
= {
769 .owner
= THIS_MODULE
,
770 .read
= stli_memread
,
771 .write
= stli_memwrite
,
772 .ioctl
= stli_memioctl
,
775 /*****************************************************************************/
778 * Define a timer_list entry for our poll routine. The slave board
779 * is polled every so often to see if anything needs doing. This is
780 * much cheaper on host cpu than using interrupts. It turns out to
781 * not increase character latency by much either...
783 static DEFINE_TIMER(stli_timerlist
, stli_poll
, 0, 0);
785 static int stli_timeron
;
788 * Define the calculation for the timeout routine.
790 #define STLI_TIMEOUT (jiffies + 1)
792 /*****************************************************************************/
794 static struct class *istallion_class
;
799 * Loadable module initialization stuff.
802 static int __init
istallion_module_init(void)
807 printk("init_module()\n");
813 restore_flags(flags
);
818 /*****************************************************************************/
820 static void __exit
istallion_module_exit(void)
828 printk("cleanup_module()\n");
831 printk(KERN_INFO
"Unloading %s: version %s\n", stli_drvtitle
,
838 * Free up all allocated resources used by the ports. This includes
839 * memory and interrupts.
843 del_timer(&stli_timerlist
);
846 i
= tty_unregister_driver(stli_serial
);
848 printk("STALLION: failed to un-register tty driver, "
850 restore_flags(flags
);
853 put_tty_driver(stli_serial
);
854 for (i
= 0; i
< 4; i
++) {
855 devfs_remove("staliomem/%d", i
);
856 class_device_destroy(istallion_class
, MKDEV(STL_SIOMEMMAJOR
, i
));
858 devfs_remove("staliomem");
859 class_destroy(istallion_class
);
860 if ((i
= unregister_chrdev(STL_SIOMEMMAJOR
, "staliomem")))
861 printk("STALLION: failed to un-register serial memory device, "
864 kfree(stli_tmpwritebuf
);
865 kfree(stli_txcookbuf
);
867 for (i
= 0; (i
< stli_nrbrds
); i
++) {
868 if ((brdp
= stli_brds
[i
]) == (stlibrd_t
*) NULL
)
870 for (j
= 0; (j
< STL_MAXPORTS
); j
++) {
871 portp
= brdp
->ports
[j
];
872 if (portp
!= (stliport_t
*) NULL
) {
873 if (portp
->tty
!= (struct tty_struct
*) NULL
)
874 tty_hangup(portp
->tty
);
879 iounmap(brdp
->membase
);
880 if (brdp
->iosize
> 0)
881 release_region(brdp
->iobase
, brdp
->iosize
);
883 stli_brds
[i
] = (stlibrd_t
*) NULL
;
886 restore_flags(flags
);
889 module_init(istallion_module_init
);
890 module_exit(istallion_module_exit
);
892 /*****************************************************************************/
895 * Check for any arguments passed in on the module load command line.
898 static void stli_argbrds(void)
905 printk("stli_argbrds()\n");
908 for (i
= stli_nrbrds
; i
< ARRAY_SIZE(stli_brdsp
); i
++) {
909 memset(&conf
, 0, sizeof(conf
));
910 if (stli_parsebrd(&conf
, stli_brdsp
[i
]) == 0)
912 if ((brdp
= stli_allocbrd()) == (stlibrd_t
*) NULL
)
916 brdp
->brdtype
= conf
.brdtype
;
917 brdp
->iobase
= conf
.ioaddr1
;
918 brdp
->memaddr
= conf
.memaddr
;
923 /*****************************************************************************/
926 * Convert an ascii string number into an unsigned long.
929 static unsigned long stli_atol(char *str
)
937 if ((*sp
== '0') && (*(sp
+1) == 'x')) {
940 } else if (*sp
== '0') {
947 for (; (*sp
!= 0); sp
++) {
948 c
= (*sp
> '9') ? (TOLOWER(*sp
) - 'a' + 10) : (*sp
- '0');
949 if ((c
< 0) || (c
>= base
)) {
950 printk("STALLION: invalid argument %s\n", str
);
954 val
= (val
* base
) + c
;
959 /*****************************************************************************/
962 * Parse the supplied argument string, into the board conf struct.
965 static int stli_parsebrd(stlconf_t
*confp
, char **argp
)
971 printk("stli_parsebrd(confp=%x,argp=%x)\n", (int) confp
, (int) argp
);
974 if ((argp
[0] == (char *) NULL
) || (*argp
[0] == 0))
977 for (sp
= argp
[0], i
= 0; ((*sp
!= 0) && (i
< 25)); sp
++, i
++)
980 for (i
= 0; i
< ARRAY_SIZE(stli_brdstr
); i
++) {
981 if (strcmp(stli_brdstr
[i
].name
, argp
[0]) == 0)
984 if (i
== ARRAY_SIZE(stli_brdstr
)) {
985 printk("STALLION: unknown board name, %s?\n", argp
[0]);
989 confp
->brdtype
= stli_brdstr
[i
].type
;
990 if ((argp
[1] != (char *) NULL
) && (*argp
[1] != 0))
991 confp
->ioaddr1
= stli_atol(argp
[1]);
992 if ((argp
[2] != (char *) NULL
) && (*argp
[2] != 0))
993 confp
->memaddr
= stli_atol(argp
[2]);
999 /*****************************************************************************/
1002 * Local driver kernel malloc routine.
1005 static void *stli_memalloc(int len
)
1007 return((void *) kmalloc(len
, GFP_KERNEL
));
1010 /*****************************************************************************/
1012 static int stli_open(struct tty_struct
*tty
, struct file
*filp
)
1016 unsigned int minordev
;
1017 int brdnr
, portnr
, rc
;
1020 printk("stli_open(tty=%x,filp=%x): device=%s\n", (int) tty
,
1021 (int) filp
, tty
->name
);
1024 minordev
= tty
->index
;
1025 brdnr
= MINOR2BRD(minordev
);
1026 if (brdnr
>= stli_nrbrds
)
1028 brdp
= stli_brds
[brdnr
];
1029 if (brdp
== (stlibrd_t
*) NULL
)
1031 if ((brdp
->state
& BST_STARTED
) == 0)
1033 portnr
= MINOR2PORT(minordev
);
1034 if ((portnr
< 0) || (portnr
> brdp
->nrports
))
1037 portp
= brdp
->ports
[portnr
];
1038 if (portp
== (stliport_t
*) NULL
)
1040 if (portp
->devnr
< 1)
1045 * Check if this port is in the middle of closing. If so then wait
1046 * until it is closed then return error status based on flag settings.
1047 * The sleep here does not need interrupt protection since the wakeup
1048 * for it is done with the same context.
1050 if (portp
->flags
& ASYNC_CLOSING
) {
1051 interruptible_sleep_on(&portp
->close_wait
);
1052 if (portp
->flags
& ASYNC_HUP_NOTIFY
)
1054 return(-ERESTARTSYS
);
1058 * On the first open of the device setup the port hardware, and
1059 * initialize the per port data structure. Since initializing the port
1060 * requires several commands to the board we will need to wait for any
1061 * other open that is already initializing the port.
1064 tty
->driver_data
= portp
;
1067 wait_event_interruptible(portp
->raw_wait
,
1068 !test_bit(ST_INITIALIZING
, &portp
->state
));
1069 if (signal_pending(current
))
1070 return(-ERESTARTSYS
);
1072 if ((portp
->flags
& ASYNC_INITIALIZED
) == 0) {
1073 set_bit(ST_INITIALIZING
, &portp
->state
);
1074 if ((rc
= stli_initopen(brdp
, portp
)) >= 0) {
1075 portp
->flags
|= ASYNC_INITIALIZED
;
1076 clear_bit(TTY_IO_ERROR
, &tty
->flags
);
1078 clear_bit(ST_INITIALIZING
, &portp
->state
);
1079 wake_up_interruptible(&portp
->raw_wait
);
1085 * Check if this port is in the middle of closing. If so then wait
1086 * until it is closed then return error status, based on flag settings.
1087 * The sleep here does not need interrupt protection since the wakeup
1088 * for it is done with the same context.
1090 if (portp
->flags
& ASYNC_CLOSING
) {
1091 interruptible_sleep_on(&portp
->close_wait
);
1092 if (portp
->flags
& ASYNC_HUP_NOTIFY
)
1094 return(-ERESTARTSYS
);
1098 * Based on type of open being done check if it can overlap with any
1099 * previous opens still in effect. If we are a normal serial device
1100 * then also we might have to wait for carrier.
1102 if (!(filp
->f_flags
& O_NONBLOCK
)) {
1103 if ((rc
= stli_waitcarrier(brdp
, portp
, filp
)) != 0)
1106 portp
->flags
|= ASYNC_NORMAL_ACTIVE
;
1110 /*****************************************************************************/
1112 static void stli_close(struct tty_struct
*tty
, struct file
*filp
)
1116 unsigned long flags
;
1119 printk("stli_close(tty=%x,filp=%x)\n", (int) tty
, (int) filp
);
1122 portp
= tty
->driver_data
;
1123 if (portp
== (stliport_t
*) NULL
)
1128 if (tty_hung_up_p(filp
)) {
1129 restore_flags(flags
);
1132 if ((tty
->count
== 1) && (portp
->refcount
!= 1))
1133 portp
->refcount
= 1;
1134 if (portp
->refcount
-- > 1) {
1135 restore_flags(flags
);
1139 portp
->flags
|= ASYNC_CLOSING
;
1142 * May want to wait for data to drain before closing. The BUSY flag
1143 * keeps track of whether we are still transmitting or not. It is
1144 * updated by messages from the slave - indicating when all chars
1145 * really have drained.
1147 if (tty
== stli_txcooktty
)
1148 stli_flushchars(tty
);
1150 if (portp
->closing_wait
!= ASYNC_CLOSING_WAIT_NONE
)
1151 tty_wait_until_sent(tty
, portp
->closing_wait
);
1153 portp
->flags
&= ~ASYNC_INITIALIZED
;
1154 brdp
= stli_brds
[portp
->brdnr
];
1155 stli_rawclose(brdp
, portp
, 0, 0);
1156 if (tty
->termios
->c_cflag
& HUPCL
) {
1157 stli_mkasysigs(&portp
->asig
, 0, 0);
1158 if (test_bit(ST_CMDING
, &portp
->state
))
1159 set_bit(ST_DOSIGS
, &portp
->state
);
1161 stli_sendcmd(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
1162 sizeof(asysigs_t
), 0);
1164 clear_bit(ST_TXBUSY
, &portp
->state
);
1165 clear_bit(ST_RXSTOP
, &portp
->state
);
1166 set_bit(TTY_IO_ERROR
, &tty
->flags
);
1167 if (tty
->ldisc
.flush_buffer
)
1168 (tty
->ldisc
.flush_buffer
)(tty
);
1169 set_bit(ST_DOFLUSHRX
, &portp
->state
);
1170 stli_flushbuffer(tty
);
1173 portp
->tty
= (struct tty_struct
*) NULL
;
1175 if (portp
->openwaitcnt
) {
1176 if (portp
->close_delay
)
1177 msleep_interruptible(jiffies_to_msecs(portp
->close_delay
));
1178 wake_up_interruptible(&portp
->open_wait
);
1181 portp
->flags
&= ~(ASYNC_NORMAL_ACTIVE
|ASYNC_CLOSING
);
1182 wake_up_interruptible(&portp
->close_wait
);
1183 restore_flags(flags
);
1186 /*****************************************************************************/
1189 * Carry out first open operations on a port. This involves a number of
1190 * commands to be sent to the slave. We need to open the port, set the
1191 * notification events, set the initial port settings, get and set the
1192 * initial signal values. We sleep and wait in between each one. But
1193 * this still all happens pretty quickly.
1196 static int stli_initopen(stlibrd_t
*brdp
, stliport_t
*portp
)
1198 struct tty_struct
*tty
;
1204 printk("stli_initopen(brdp=%x,portp=%x)\n", (int) brdp
, (int) portp
);
1207 if ((rc
= stli_rawopen(brdp
, portp
, 0, 1)) < 0)
1210 memset(&nt
, 0, sizeof(asynotify_t
));
1211 nt
.data
= (DT_TXLOW
| DT_TXEMPTY
| DT_RXBUSY
| DT_RXBREAK
);
1213 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETNOTIFY
, &nt
,
1214 sizeof(asynotify_t
), 0)) < 0)
1218 if (tty
== (struct tty_struct
*) NULL
)
1220 stli_mkasyport(portp
, &aport
, tty
->termios
);
1221 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETPORT
, &aport
,
1222 sizeof(asyport_t
), 0)) < 0)
1225 set_bit(ST_GETSIGS
, &portp
->state
);
1226 if ((rc
= stli_cmdwait(brdp
, portp
, A_GETSIGNALS
, &portp
->asig
,
1227 sizeof(asysigs_t
), 1)) < 0)
1229 if (test_and_clear_bit(ST_GETSIGS
, &portp
->state
))
1230 portp
->sigs
= stli_mktiocm(portp
->asig
.sigvalue
);
1231 stli_mkasysigs(&portp
->asig
, 1, 1);
1232 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
1233 sizeof(asysigs_t
), 0)) < 0)
1239 /*****************************************************************************/
1242 * Send an open message to the slave. This will sleep waiting for the
1243 * acknowledgement, so must have user context. We need to co-ordinate
1244 * with close events here, since we don't want open and close events
1248 static int stli_rawopen(stlibrd_t
*brdp
, stliport_t
*portp
, unsigned long arg
, int wait
)
1250 volatile cdkhdr_t
*hdrp
;
1251 volatile cdkctrl_t
*cp
;
1252 volatile unsigned char *bits
;
1253 unsigned long flags
;
1257 printk("stli_rawopen(brdp=%x,portp=%x,arg=%x,wait=%d)\n",
1258 (int) brdp
, (int) portp
, (int) arg
, wait
);
1262 * Send a message to the slave to open this port.
1268 * Slave is already closing this port. This can happen if a hangup
1269 * occurs on this port. So we must wait until it is complete. The
1270 * order of opens and closes may not be preserved across shared
1271 * memory, so we must wait until it is complete.
1273 wait_event_interruptible(portp
->raw_wait
,
1274 !test_bit(ST_CLOSING
, &portp
->state
));
1275 if (signal_pending(current
)) {
1276 restore_flags(flags
);
1277 return -ERESTARTSYS
;
1281 * Everything is ready now, so write the open message into shared
1282 * memory. Once the message is in set the service bits to say that
1283 * this port wants service.
1286 cp
= &((volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->ctrl
;
1289 hdrp
= (volatile cdkhdr_t
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1290 bits
= ((volatile unsigned char *) hdrp
) + brdp
->slaveoffset
+
1292 *bits
|= portp
->portbit
;
1296 restore_flags(flags
);
1301 * Slave is in action, so now we must wait for the open acknowledgment
1305 set_bit(ST_OPENING
, &portp
->state
);
1306 wait_event_interruptible(portp
->raw_wait
,
1307 !test_bit(ST_OPENING
, &portp
->state
));
1308 if (signal_pending(current
))
1310 restore_flags(flags
);
1312 if ((rc
== 0) && (portp
->rc
!= 0))
1317 /*****************************************************************************/
1320 * Send a close message to the slave. Normally this will sleep waiting
1321 * for the acknowledgement, but if wait parameter is 0 it will not. If
1322 * wait is true then must have user context (to sleep).
1325 static int stli_rawclose(stlibrd_t
*brdp
, stliport_t
*portp
, unsigned long arg
, int wait
)
1327 volatile cdkhdr_t
*hdrp
;
1328 volatile cdkctrl_t
*cp
;
1329 volatile unsigned char *bits
;
1330 unsigned long flags
;
1334 printk("stli_rawclose(brdp=%x,portp=%x,arg=%x,wait=%d)\n",
1335 (int) brdp
, (int) portp
, (int) arg
, wait
);
1342 * Slave is already closing this port. This can happen if a hangup
1343 * occurs on this port.
1346 wait_event_interruptible(portp
->raw_wait
,
1347 !test_bit(ST_CLOSING
, &portp
->state
));
1348 if (signal_pending(current
)) {
1349 restore_flags(flags
);
1350 return -ERESTARTSYS
;
1355 * Write the close command into shared memory.
1358 cp
= &((volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->ctrl
;
1361 hdrp
= (volatile cdkhdr_t
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1362 bits
= ((volatile unsigned char *) hdrp
) + brdp
->slaveoffset
+
1364 *bits
|= portp
->portbit
;
1367 set_bit(ST_CLOSING
, &portp
->state
);
1369 restore_flags(flags
);
1374 * Slave is in action, so now we must wait for the open acknowledgment
1378 wait_event_interruptible(portp
->raw_wait
,
1379 !test_bit(ST_CLOSING
, &portp
->state
));
1380 if (signal_pending(current
))
1382 restore_flags(flags
);
1384 if ((rc
== 0) && (portp
->rc
!= 0))
1389 /*****************************************************************************/
1392 * Send a command to the slave and wait for the response. This must
1393 * have user context (it sleeps). This routine is generic in that it
1394 * can send any type of command. Its purpose is to wait for that command
1395 * to complete (as opposed to initiating the command then returning).
1398 static int stli_cmdwait(stlibrd_t
*brdp
, stliport_t
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
)
1400 unsigned long flags
;
1403 printk("stli_cmdwait(brdp=%x,portp=%x,cmd=%x,arg=%x,size=%d,"
1404 "copyback=%d)\n", (int) brdp
, (int) portp
, (int) cmd
,
1405 (int) arg
, size
, copyback
);
1410 wait_event_interruptible(portp
->raw_wait
,
1411 !test_bit(ST_CMDING
, &portp
->state
));
1412 if (signal_pending(current
)) {
1413 restore_flags(flags
);
1414 return -ERESTARTSYS
;
1417 stli_sendcmd(brdp
, portp
, cmd
, arg
, size
, copyback
);
1419 wait_event_interruptible(portp
->raw_wait
,
1420 !test_bit(ST_CMDING
, &portp
->state
));
1421 if (signal_pending(current
)) {
1422 restore_flags(flags
);
1423 return -ERESTARTSYS
;
1425 restore_flags(flags
);
1432 /*****************************************************************************/
1435 * Send the termios settings for this port to the slave. This sleeps
1436 * waiting for the command to complete - so must have user context.
1439 static int stli_setport(stliport_t
*portp
)
1445 printk("stli_setport(portp=%x)\n", (int) portp
);
1448 if (portp
== (stliport_t
*) NULL
)
1450 if (portp
->tty
== (struct tty_struct
*) NULL
)
1452 if ((portp
->brdnr
< 0) && (portp
->brdnr
>= stli_nrbrds
))
1454 brdp
= stli_brds
[portp
->brdnr
];
1455 if (brdp
== (stlibrd_t
*) NULL
)
1458 stli_mkasyport(portp
, &aport
, portp
->tty
->termios
);
1459 return(stli_cmdwait(brdp
, portp
, A_SETPORT
, &aport
, sizeof(asyport_t
), 0));
1462 /*****************************************************************************/
1465 * Possibly need to wait for carrier (DCD signal) to come high. Say
1466 * maybe because if we are clocal then we don't need to wait...
1469 static int stli_waitcarrier(stlibrd_t
*brdp
, stliport_t
*portp
, struct file
*filp
)
1471 unsigned long flags
;
1475 printk("stli_waitcarrier(brdp=%x,portp=%x,filp=%x)\n",
1476 (int) brdp
, (int) portp
, (int) filp
);
1482 if (portp
->tty
->termios
->c_cflag
& CLOCAL
)
1487 portp
->openwaitcnt
++;
1488 if (! tty_hung_up_p(filp
))
1492 stli_mkasysigs(&portp
->asig
, 1, 1);
1493 if ((rc
= stli_cmdwait(brdp
, portp
, A_SETSIGNALS
,
1494 &portp
->asig
, sizeof(asysigs_t
), 0)) < 0)
1496 if (tty_hung_up_p(filp
) ||
1497 ((portp
->flags
& ASYNC_INITIALIZED
) == 0)) {
1498 if (portp
->flags
& ASYNC_HUP_NOTIFY
)
1504 if (((portp
->flags
& ASYNC_CLOSING
) == 0) &&
1505 (doclocal
|| (portp
->sigs
& TIOCM_CD
))) {
1508 if (signal_pending(current
)) {
1512 interruptible_sleep_on(&portp
->open_wait
);
1515 if (! tty_hung_up_p(filp
))
1517 portp
->openwaitcnt
--;
1518 restore_flags(flags
);
1523 /*****************************************************************************/
1526 * Write routine. Take the data and put it in the shared memory ring
1527 * queue. If port is not already sending chars then need to mark the
1528 * service bits for this port.
1531 static int stli_write(struct tty_struct
*tty
, const unsigned char *buf
, int count
)
1533 volatile cdkasy_t
*ap
;
1534 volatile cdkhdr_t
*hdrp
;
1535 volatile unsigned char *bits
;
1536 unsigned char *shbuf
, *chbuf
;
1539 unsigned int len
, stlen
, head
, tail
, size
;
1540 unsigned long flags
;
1543 printk("stli_write(tty=%x,buf=%x,count=%d)\n",
1544 (int) tty
, (int) buf
, count
);
1547 if ((tty
== (struct tty_struct
*) NULL
) ||
1548 (stli_tmpwritebuf
== (char *) NULL
))
1550 if (tty
== stli_txcooktty
)
1551 stli_flushchars(tty
);
1552 portp
= tty
->driver_data
;
1553 if (portp
== (stliport_t
*) NULL
)
1555 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
1557 brdp
= stli_brds
[portp
->brdnr
];
1558 if (brdp
== (stlibrd_t
*) NULL
)
1560 chbuf
= (unsigned char *) buf
;
1563 * All data is now local, shove as much as possible into shared memory.
1568 ap
= (volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1569 head
= (unsigned int) ap
->txq
.head
;
1570 tail
= (unsigned int) ap
->txq
.tail
;
1571 if (tail
!= ((unsigned int) ap
->txq
.tail
))
1572 tail
= (unsigned int) ap
->txq
.tail
;
1573 size
= portp
->txsize
;
1575 len
= size
- (head
- tail
) - 1;
1576 stlen
= size
- head
;
1578 len
= tail
- head
- 1;
1582 len
= MIN(len
, count
);
1584 shbuf
= (char *) EBRDGETMEMPTR(brdp
, portp
->txoffset
);
1587 stlen
= MIN(len
, stlen
);
1588 memcpy((shbuf
+ head
), chbuf
, stlen
);
1599 ap
= (volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1600 ap
->txq
.head
= head
;
1601 if (test_bit(ST_TXBUSY
, &portp
->state
)) {
1602 if (ap
->changed
.data
& DT_TXEMPTY
)
1603 ap
->changed
.data
&= ~DT_TXEMPTY
;
1605 hdrp
= (volatile cdkhdr_t
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1606 bits
= ((volatile unsigned char *) hdrp
) + brdp
->slaveoffset
+
1608 *bits
|= portp
->portbit
;
1609 set_bit(ST_TXBUSY
, &portp
->state
);
1612 restore_flags(flags
);
1617 /*****************************************************************************/
1620 * Output a single character. We put it into a temporary local buffer
1621 * (for speed) then write out that buffer when the flushchars routine
1622 * is called. There is a safety catch here so that if some other port
1623 * writes chars before the current buffer has been, then we write them
1624 * first them do the new ports.
1627 static void stli_putchar(struct tty_struct
*tty
, unsigned char ch
)
1630 printk("stli_putchar(tty=%x,ch=%x)\n", (int) tty
, (int) ch
);
1633 if (tty
== (struct tty_struct
*) NULL
)
1635 if (tty
!= stli_txcooktty
) {
1636 if (stli_txcooktty
!= (struct tty_struct
*) NULL
)
1637 stli_flushchars(stli_txcooktty
);
1638 stli_txcooktty
= tty
;
1641 stli_txcookbuf
[stli_txcooksize
++] = ch
;
1644 /*****************************************************************************/
1647 * Transfer characters from the local TX cooking buffer to the board.
1648 * We sort of ignore the tty that gets passed in here. We rely on the
1649 * info stored with the TX cook buffer to tell us which port to flush
1650 * the data on. In any case we clean out the TX cook buffer, for re-use
1654 static void stli_flushchars(struct tty_struct
*tty
)
1656 volatile cdkhdr_t
*hdrp
;
1657 volatile unsigned char *bits
;
1658 volatile cdkasy_t
*ap
;
1659 struct tty_struct
*cooktty
;
1662 unsigned int len
, stlen
, head
, tail
, size
, count
, cooksize
;
1663 unsigned char *buf
, *shbuf
;
1664 unsigned long flags
;
1667 printk("stli_flushchars(tty=%x)\n", (int) tty
);
1670 cooksize
= stli_txcooksize
;
1671 cooktty
= stli_txcooktty
;
1672 stli_txcooksize
= 0;
1673 stli_txcookrealsize
= 0;
1674 stli_txcooktty
= (struct tty_struct
*) NULL
;
1676 if (tty
== (struct tty_struct
*) NULL
)
1678 if (cooktty
== (struct tty_struct
*) NULL
)
1685 portp
= tty
->driver_data
;
1686 if (portp
== (stliport_t
*) NULL
)
1688 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
1690 brdp
= stli_brds
[portp
->brdnr
];
1691 if (brdp
== (stlibrd_t
*) NULL
)
1698 ap
= (volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1699 head
= (unsigned int) ap
->txq
.head
;
1700 tail
= (unsigned int) ap
->txq
.tail
;
1701 if (tail
!= ((unsigned int) ap
->txq
.tail
))
1702 tail
= (unsigned int) ap
->txq
.tail
;
1703 size
= portp
->txsize
;
1705 len
= size
- (head
- tail
) - 1;
1706 stlen
= size
- head
;
1708 len
= tail
- head
- 1;
1712 len
= MIN(len
, cooksize
);
1714 shbuf
= (char *) EBRDGETMEMPTR(brdp
, portp
->txoffset
);
1715 buf
= stli_txcookbuf
;
1718 stlen
= MIN(len
, stlen
);
1719 memcpy((shbuf
+ head
), buf
, stlen
);
1730 ap
= (volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
1731 ap
->txq
.head
= head
;
1733 if (test_bit(ST_TXBUSY
, &portp
->state
)) {
1734 if (ap
->changed
.data
& DT_TXEMPTY
)
1735 ap
->changed
.data
&= ~DT_TXEMPTY
;
1737 hdrp
= (volatile cdkhdr_t
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
1738 bits
= ((volatile unsigned char *) hdrp
) + brdp
->slaveoffset
+
1740 *bits
|= portp
->portbit
;
1741 set_bit(ST_TXBUSY
, &portp
->state
);
1744 restore_flags(flags
);
1747 /*****************************************************************************/
1749 static int stli_writeroom(struct tty_struct
*tty
)
1751 volatile cdkasyrq_t
*rp
;
1754 unsigned int head
, tail
, len
;
1755 unsigned long flags
;
1758 printk("stli_writeroom(tty=%x)\n", (int) tty
);
1761 if (tty
== (struct tty_struct
*) NULL
)
1763 if (tty
== stli_txcooktty
) {
1764 if (stli_txcookrealsize
!= 0) {
1765 len
= stli_txcookrealsize
- stli_txcooksize
;
1770 portp
= tty
->driver_data
;
1771 if (portp
== (stliport_t
*) NULL
)
1773 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
1775 brdp
= stli_brds
[portp
->brdnr
];
1776 if (brdp
== (stlibrd_t
*) NULL
)
1782 rp
= &((volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->txq
;
1783 head
= (unsigned int) rp
->head
;
1784 tail
= (unsigned int) rp
->tail
;
1785 if (tail
!= ((unsigned int) rp
->tail
))
1786 tail
= (unsigned int) rp
->tail
;
1787 len
= (head
>= tail
) ? (portp
->txsize
- (head
- tail
)) : (tail
- head
);
1790 restore_flags(flags
);
1792 if (tty
== stli_txcooktty
) {
1793 stli_txcookrealsize
= len
;
1794 len
-= stli_txcooksize
;
1799 /*****************************************************************************/
1802 * Return the number of characters in the transmit buffer. Normally we
1803 * will return the number of chars in the shared memory ring queue.
1804 * We need to kludge around the case where the shared memory buffer is
1805 * empty but not all characters have drained yet, for this case just
1806 * return that there is 1 character in the buffer!
1809 static int stli_charsinbuffer(struct tty_struct
*tty
)
1811 volatile cdkasyrq_t
*rp
;
1814 unsigned int head
, tail
, len
;
1815 unsigned long flags
;
1818 printk("stli_charsinbuffer(tty=%x)\n", (int) tty
);
1821 if (tty
== (struct tty_struct
*) NULL
)
1823 if (tty
== stli_txcooktty
)
1824 stli_flushchars(tty
);
1825 portp
= tty
->driver_data
;
1826 if (portp
== (stliport_t
*) NULL
)
1828 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
1830 brdp
= stli_brds
[portp
->brdnr
];
1831 if (brdp
== (stlibrd_t
*) NULL
)
1837 rp
= &((volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->txq
;
1838 head
= (unsigned int) rp
->head
;
1839 tail
= (unsigned int) rp
->tail
;
1840 if (tail
!= ((unsigned int) rp
->tail
))
1841 tail
= (unsigned int) rp
->tail
;
1842 len
= (head
>= tail
) ? (head
- tail
) : (portp
->txsize
- (tail
- head
));
1843 if ((len
== 0) && test_bit(ST_TXBUSY
, &portp
->state
))
1846 restore_flags(flags
);
1851 /*****************************************************************************/
1854 * Generate the serial struct info.
1857 static int stli_getserial(stliport_t
*portp
, struct serial_struct __user
*sp
)
1859 struct serial_struct sio
;
1863 printk("stli_getserial(portp=%x,sp=%x)\n", (int) portp
, (int) sp
);
1866 memset(&sio
, 0, sizeof(struct serial_struct
));
1867 sio
.type
= PORT_UNKNOWN
;
1868 sio
.line
= portp
->portnr
;
1870 sio
.flags
= portp
->flags
;
1871 sio
.baud_base
= portp
->baud_base
;
1872 sio
.close_delay
= portp
->close_delay
;
1873 sio
.closing_wait
= portp
->closing_wait
;
1874 sio
.custom_divisor
= portp
->custom_divisor
;
1875 sio
.xmit_fifo_size
= 0;
1878 brdp
= stli_brds
[portp
->brdnr
];
1879 if (brdp
!= (stlibrd_t
*) NULL
)
1880 sio
.port
= brdp
->iobase
;
1882 return copy_to_user(sp
, &sio
, sizeof(struct serial_struct
)) ?
1886 /*****************************************************************************/
1889 * Set port according to the serial struct info.
1890 * At this point we do not do any auto-configure stuff, so we will
1891 * just quietly ignore any requests to change irq, etc.
1894 static int stli_setserial(stliport_t
*portp
, struct serial_struct __user
*sp
)
1896 struct serial_struct sio
;
1900 printk("stli_setserial(portp=%p,sp=%p)\n", portp
, sp
);
1903 if (copy_from_user(&sio
, sp
, sizeof(struct serial_struct
)))
1905 if (!capable(CAP_SYS_ADMIN
)) {
1906 if ((sio
.baud_base
!= portp
->baud_base
) ||
1907 (sio
.close_delay
!= portp
->close_delay
) ||
1908 ((sio
.flags
& ~ASYNC_USR_MASK
) !=
1909 (portp
->flags
& ~ASYNC_USR_MASK
)))
1913 portp
->flags
= (portp
->flags
& ~ASYNC_USR_MASK
) |
1914 (sio
.flags
& ASYNC_USR_MASK
);
1915 portp
->baud_base
= sio
.baud_base
;
1916 portp
->close_delay
= sio
.close_delay
;
1917 portp
->closing_wait
= sio
.closing_wait
;
1918 portp
->custom_divisor
= sio
.custom_divisor
;
1920 if ((rc
= stli_setport(portp
)) < 0)
1925 /*****************************************************************************/
1927 static int stli_tiocmget(struct tty_struct
*tty
, struct file
*file
)
1929 stliport_t
*portp
= tty
->driver_data
;
1933 if (portp
== (stliport_t
*) NULL
)
1935 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
1937 brdp
= stli_brds
[portp
->brdnr
];
1938 if (brdp
== (stlibrd_t
*) NULL
)
1940 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1943 if ((rc
= stli_cmdwait(brdp
, portp
, A_GETSIGNALS
,
1944 &portp
->asig
, sizeof(asysigs_t
), 1)) < 0)
1947 return stli_mktiocm(portp
->asig
.sigvalue
);
1950 static int stli_tiocmset(struct tty_struct
*tty
, struct file
*file
,
1951 unsigned int set
, unsigned int clear
)
1953 stliport_t
*portp
= tty
->driver_data
;
1955 int rts
= -1, dtr
= -1;
1957 if (portp
== (stliport_t
*) NULL
)
1959 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
1961 brdp
= stli_brds
[portp
->brdnr
];
1962 if (brdp
== (stlibrd_t
*) NULL
)
1964 if (tty
->flags
& (1 << TTY_IO_ERROR
))
1967 if (set
& TIOCM_RTS
)
1969 if (set
& TIOCM_DTR
)
1971 if (clear
& TIOCM_RTS
)
1973 if (clear
& TIOCM_DTR
)
1976 stli_mkasysigs(&portp
->asig
, dtr
, rts
);
1978 return stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
1979 sizeof(asysigs_t
), 0);
1982 static int stli_ioctl(struct tty_struct
*tty
, struct file
*file
, unsigned int cmd
, unsigned long arg
)
1988 void __user
*argp
= (void __user
*)arg
;
1991 printk("stli_ioctl(tty=%x,file=%x,cmd=%x,arg=%x)\n",
1992 (int) tty
, (int) file
, cmd
, (int) arg
);
1995 if (tty
== (struct tty_struct
*) NULL
)
1997 portp
= tty
->driver_data
;
1998 if (portp
== (stliport_t
*) NULL
)
2000 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
2002 brdp
= stli_brds
[portp
->brdnr
];
2003 if (brdp
== (stlibrd_t
*) NULL
)
2006 if ((cmd
!= TIOCGSERIAL
) && (cmd
!= TIOCSSERIAL
) &&
2007 (cmd
!= COM_GETPORTSTATS
) && (cmd
!= COM_CLRPORTSTATS
)) {
2008 if (tty
->flags
& (1 << TTY_IO_ERROR
))
2016 rc
= put_user(((tty
->termios
->c_cflag
& CLOCAL
) ? 1 : 0),
2017 (unsigned __user
*) arg
);
2020 if ((rc
= get_user(ival
, (unsigned __user
*) arg
)) == 0)
2021 tty
->termios
->c_cflag
=
2022 (tty
->termios
->c_cflag
& ~CLOCAL
) |
2023 (ival
? CLOCAL
: 0);
2026 rc
= stli_getserial(portp
, argp
);
2029 rc
= stli_setserial(portp
, argp
);
2032 rc
= put_user(portp
->pflag
, (unsigned __user
*)argp
);
2035 if ((rc
= get_user(portp
->pflag
, (unsigned __user
*)argp
)) == 0)
2036 stli_setport(portp
);
2038 case COM_GETPORTSTATS
:
2039 rc
= stli_getportstats(portp
, argp
);
2041 case COM_CLRPORTSTATS
:
2042 rc
= stli_clrportstats(portp
, argp
);
2048 case TIOCSERGSTRUCT
:
2049 case TIOCSERGETMULTI
:
2050 case TIOCSERSETMULTI
:
2059 /*****************************************************************************/
2062 * This routine assumes that we have user context and can sleep.
2063 * Looks like it is true for the current ttys implementation..!!
2066 static void stli_settermios(struct tty_struct
*tty
, struct termios
*old
)
2070 struct termios
*tiosp
;
2074 printk("stli_settermios(tty=%x,old=%x)\n", (int) tty
, (int) old
);
2077 if (tty
== (struct tty_struct
*) NULL
)
2079 portp
= tty
->driver_data
;
2080 if (portp
== (stliport_t
*) NULL
)
2082 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
2084 brdp
= stli_brds
[portp
->brdnr
];
2085 if (brdp
== (stlibrd_t
*) NULL
)
2088 tiosp
= tty
->termios
;
2089 if ((tiosp
->c_cflag
== old
->c_cflag
) &&
2090 (tiosp
->c_iflag
== old
->c_iflag
))
2093 stli_mkasyport(portp
, &aport
, tiosp
);
2094 stli_cmdwait(brdp
, portp
, A_SETPORT
, &aport
, sizeof(asyport_t
), 0);
2095 stli_mkasysigs(&portp
->asig
, ((tiosp
->c_cflag
& CBAUD
) ? 1 : 0), -1);
2096 stli_cmdwait(brdp
, portp
, A_SETSIGNALS
, &portp
->asig
,
2097 sizeof(asysigs_t
), 0);
2098 if ((old
->c_cflag
& CRTSCTS
) && ((tiosp
->c_cflag
& CRTSCTS
) == 0))
2099 tty
->hw_stopped
= 0;
2100 if (((old
->c_cflag
& CLOCAL
) == 0) && (tiosp
->c_cflag
& CLOCAL
))
2101 wake_up_interruptible(&portp
->open_wait
);
2104 /*****************************************************************************/
2107 * Attempt to flow control who ever is sending us data. We won't really
2108 * do any flow control action here. We can't directly, and even if we
2109 * wanted to we would have to send a command to the slave. The slave
2110 * knows how to flow control, and will do so when its buffers reach its
2111 * internal high water marks. So what we will do is set a local state
2112 * bit that will stop us sending any RX data up from the poll routine
2113 * (which is the place where RX data from the slave is handled).
2116 static void stli_throttle(struct tty_struct
*tty
)
2121 printk("stli_throttle(tty=%x)\n", (int) tty
);
2124 if (tty
== (struct tty_struct
*) NULL
)
2126 portp
= tty
->driver_data
;
2127 if (portp
== (stliport_t
*) NULL
)
2130 set_bit(ST_RXSTOP
, &portp
->state
);
2133 /*****************************************************************************/
2136 * Unflow control the device sending us data... That means that all
2137 * we have to do is clear the RXSTOP state bit. The next poll call
2138 * will then be able to pass the RX data back up.
2141 static void stli_unthrottle(struct tty_struct
*tty
)
2146 printk("stli_unthrottle(tty=%x)\n", (int) tty
);
2149 if (tty
== (struct tty_struct
*) NULL
)
2151 portp
= tty
->driver_data
;
2152 if (portp
== (stliport_t
*) NULL
)
2155 clear_bit(ST_RXSTOP
, &portp
->state
);
2158 /*****************************************************************************/
2161 * Stop the transmitter. Basically to do this we will just turn TX
2165 static void stli_stop(struct tty_struct
*tty
)
2172 printk("stli_stop(tty=%x)\n", (int) tty
);
2175 if (tty
== (struct tty_struct
*) NULL
)
2177 portp
= tty
->driver_data
;
2178 if (portp
== (stliport_t
*) NULL
)
2180 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
2182 brdp
= stli_brds
[portp
->brdnr
];
2183 if (brdp
== (stlibrd_t
*) NULL
)
2186 memset(&actrl
, 0, sizeof(asyctrl_t
));
2187 actrl
.txctrl
= CT_STOPFLOW
;
2189 stli_cmdwait(brdp
, portp
, A_PORTCTRL
, &actrl
, sizeof(asyctrl_t
), 0);
2193 /*****************************************************************************/
2196 * Start the transmitter again. Just turn TX interrupts back on.
2199 static void stli_start(struct tty_struct
*tty
)
2206 printk("stli_start(tty=%x)\n", (int) tty
);
2209 if (tty
== (struct tty_struct
*) NULL
)
2211 portp
= tty
->driver_data
;
2212 if (portp
== (stliport_t
*) NULL
)
2214 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
2216 brdp
= stli_brds
[portp
->brdnr
];
2217 if (brdp
== (stlibrd_t
*) NULL
)
2220 memset(&actrl
, 0, sizeof(asyctrl_t
));
2221 actrl
.txctrl
= CT_STARTFLOW
;
2223 stli_cmdwait(brdp
, portp
, A_PORTCTRL
, &actrl
, sizeof(asyctrl_t
), 0);
2227 /*****************************************************************************/
2230 * Scheduler called hang up routine. This is called from the scheduler,
2231 * not direct from the driver "poll" routine. We can't call it there
2232 * since the real local hangup code will enable/disable the board and
2233 * other things that we can't do while handling the poll. Much easier
2234 * to deal with it some time later (don't really care when, hangups
2235 * aren't that time critical).
2238 static void stli_dohangup(void *arg
)
2243 printk(KERN_DEBUG
"stli_dohangup(portp=%x)\n", (int) arg
);
2247 * FIXME: There's a module removal race here: tty_hangup
2248 * calls schedule_work which will call into this
2251 portp
= (stliport_t
*) arg
;
2252 if (portp
!= (stliport_t
*) NULL
) {
2253 if (portp
->tty
!= (struct tty_struct
*) NULL
) {
2254 tty_hangup(portp
->tty
);
2259 /*****************************************************************************/
2262 * Hangup this port. This is pretty much like closing the port, only
2263 * a little more brutal. No waiting for data to drain. Shutdown the
2264 * port and maybe drop signals. This is rather tricky really. We want
2265 * to close the port as well.
2268 static void stli_hangup(struct tty_struct
*tty
)
2272 unsigned long flags
;
2275 printk(KERN_DEBUG
"stli_hangup(tty=%x)\n", (int) tty
);
2278 if (tty
== (struct tty_struct
*) NULL
)
2280 portp
= tty
->driver_data
;
2281 if (portp
== (stliport_t
*) NULL
)
2283 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
2285 brdp
= stli_brds
[portp
->brdnr
];
2286 if (brdp
== (stlibrd_t
*) NULL
)
2289 portp
->flags
&= ~ASYNC_INITIALIZED
;
2293 if (! test_bit(ST_CLOSING
, &portp
->state
))
2294 stli_rawclose(brdp
, portp
, 0, 0);
2295 if (tty
->termios
->c_cflag
& HUPCL
) {
2296 stli_mkasysigs(&portp
->asig
, 0, 0);
2297 if (test_bit(ST_CMDING
, &portp
->state
)) {
2298 set_bit(ST_DOSIGS
, &portp
->state
);
2299 set_bit(ST_DOFLUSHTX
, &portp
->state
);
2300 set_bit(ST_DOFLUSHRX
, &portp
->state
);
2302 stli_sendcmd(brdp
, portp
, A_SETSIGNALSF
,
2303 &portp
->asig
, sizeof(asysigs_t
), 0);
2306 restore_flags(flags
);
2308 clear_bit(ST_TXBUSY
, &portp
->state
);
2309 clear_bit(ST_RXSTOP
, &portp
->state
);
2310 set_bit(TTY_IO_ERROR
, &tty
->flags
);
2311 portp
->tty
= (struct tty_struct
*) NULL
;
2312 portp
->flags
&= ~ASYNC_NORMAL_ACTIVE
;
2313 portp
->refcount
= 0;
2314 wake_up_interruptible(&portp
->open_wait
);
2317 /*****************************************************************************/
2320 * Flush characters from the lower buffer. We may not have user context
2321 * so we cannot sleep waiting for it to complete. Also we need to check
2322 * if there is chars for this port in the TX cook buffer, and flush them
2326 static void stli_flushbuffer(struct tty_struct
*tty
)
2330 unsigned long ftype
, flags
;
2333 printk(KERN_DEBUG
"stli_flushbuffer(tty=%x)\n", (int) tty
);
2336 if (tty
== (struct tty_struct
*) NULL
)
2338 portp
= tty
->driver_data
;
2339 if (portp
== (stliport_t
*) NULL
)
2341 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
2343 brdp
= stli_brds
[portp
->brdnr
];
2344 if (brdp
== (stlibrd_t
*) NULL
)
2349 if (tty
== stli_txcooktty
) {
2350 stli_txcooktty
= (struct tty_struct
*) NULL
;
2351 stli_txcooksize
= 0;
2352 stli_txcookrealsize
= 0;
2354 if (test_bit(ST_CMDING
, &portp
->state
)) {
2355 set_bit(ST_DOFLUSHTX
, &portp
->state
);
2358 if (test_bit(ST_DOFLUSHRX
, &portp
->state
)) {
2360 clear_bit(ST_DOFLUSHRX
, &portp
->state
);
2362 stli_sendcmd(brdp
, portp
, A_FLUSH
, &ftype
,
2363 sizeof(unsigned long), 0);
2365 restore_flags(flags
);
2367 wake_up_interruptible(&tty
->write_wait
);
2368 if ((tty
->flags
& (1 << TTY_DO_WRITE_WAKEUP
)) &&
2369 tty
->ldisc
.write_wakeup
)
2370 (tty
->ldisc
.write_wakeup
)(tty
);
2373 /*****************************************************************************/
2375 static void stli_breakctl(struct tty_struct
*tty
, int state
)
2380 /* long savestate, savetime; */
2383 printk(KERN_DEBUG
"stli_breakctl(tty=%x,state=%d)\n", (int) tty
, state
);
2386 if (tty
== (struct tty_struct
*) NULL
)
2388 portp
= tty
->driver_data
;
2389 if (portp
== (stliport_t
*) NULL
)
2391 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
2393 brdp
= stli_brds
[portp
->brdnr
];
2394 if (brdp
== (stlibrd_t
*) NULL
)
2398 * Due to a bug in the tty send_break() code we need to preserve
2399 * the current process state and timeout...
2400 savetime = current->timeout;
2401 savestate = current->state;
2404 arg
= (state
== -1) ? BREAKON
: BREAKOFF
;
2405 stli_cmdwait(brdp
, portp
, A_BREAK
, &arg
, sizeof(long), 0);
2409 current->timeout = savetime;
2410 current->state = savestate;
2414 /*****************************************************************************/
2416 static void stli_waituntilsent(struct tty_struct
*tty
, int timeout
)
2422 printk(KERN_DEBUG
"stli_waituntilsent(tty=%x,timeout=%x)\n", (int) tty
, timeout
);
2425 if (tty
== (struct tty_struct
*) NULL
)
2427 portp
= tty
->driver_data
;
2428 if (portp
== (stliport_t
*) NULL
)
2433 tend
= jiffies
+ timeout
;
2435 while (test_bit(ST_TXBUSY
, &portp
->state
)) {
2436 if (signal_pending(current
))
2438 msleep_interruptible(20);
2439 if (time_after_eq(jiffies
, tend
))
2444 /*****************************************************************************/
2446 static void stli_sendxchar(struct tty_struct
*tty
, char ch
)
2453 printk(KERN_DEBUG
"stli_sendxchar(tty=%x,ch=%x)\n", (int) tty
, ch
);
2456 if (tty
== (struct tty_struct
*) NULL
)
2458 portp
= tty
->driver_data
;
2459 if (portp
== (stliport_t
*) NULL
)
2461 if ((portp
->brdnr
< 0) || (portp
->brdnr
>= stli_nrbrds
))
2463 brdp
= stli_brds
[portp
->brdnr
];
2464 if (brdp
== (stlibrd_t
*) NULL
)
2467 memset(&actrl
, 0, sizeof(asyctrl_t
));
2468 if (ch
== STOP_CHAR(tty
)) {
2469 actrl
.rxctrl
= CT_STOPFLOW
;
2470 } else if (ch
== START_CHAR(tty
)) {
2471 actrl
.rxctrl
= CT_STARTFLOW
;
2473 actrl
.txctrl
= CT_SENDCHR
;
2477 stli_cmdwait(brdp
, portp
, A_PORTCTRL
, &actrl
, sizeof(asyctrl_t
), 0);
2480 /*****************************************************************************/
2485 * Format info for a specified port. The line is deliberately limited
2486 * to 80 characters. (If it is too long it will be truncated, if too
2487 * short then padded with spaces).
2490 static int stli_portinfo(stlibrd_t
*brdp
, stliport_t
*portp
, int portnr
, char *pos
)
2495 rc
= stli_portcmdstats(portp
);
2498 if (brdp
->state
& BST_STARTED
) {
2499 switch (stli_comstats
.hwid
) {
2500 case 0: uart
= "2681"; break;
2501 case 1: uart
= "SC26198"; break;
2502 default: uart
= "CD1400"; break;
2507 sp
+= sprintf(sp
, "%d: uart:%s ", portnr
, uart
);
2509 if ((brdp
->state
& BST_STARTED
) && (rc
>= 0)) {
2510 sp
+= sprintf(sp
, "tx:%d rx:%d", (int) stli_comstats
.txtotal
,
2511 (int) stli_comstats
.rxtotal
);
2513 if (stli_comstats
.rxframing
)
2514 sp
+= sprintf(sp
, " fe:%d",
2515 (int) stli_comstats
.rxframing
);
2516 if (stli_comstats
.rxparity
)
2517 sp
+= sprintf(sp
, " pe:%d",
2518 (int) stli_comstats
.rxparity
);
2519 if (stli_comstats
.rxbreaks
)
2520 sp
+= sprintf(sp
, " brk:%d",
2521 (int) stli_comstats
.rxbreaks
);
2522 if (stli_comstats
.rxoverrun
)
2523 sp
+= sprintf(sp
, " oe:%d",
2524 (int) stli_comstats
.rxoverrun
);
2526 cnt
= sprintf(sp
, "%s%s%s%s%s ",
2527 (stli_comstats
.signals
& TIOCM_RTS
) ? "|RTS" : "",
2528 (stli_comstats
.signals
& TIOCM_CTS
) ? "|CTS" : "",
2529 (stli_comstats
.signals
& TIOCM_DTR
) ? "|DTR" : "",
2530 (stli_comstats
.signals
& TIOCM_CD
) ? "|DCD" : "",
2531 (stli_comstats
.signals
& TIOCM_DSR
) ? "|DSR" : "");
2536 for (cnt
= (sp
- pos
); (cnt
< (MAXLINE
- 1)); cnt
++)
2539 pos
[(MAXLINE
- 2)] = '+';
2540 pos
[(MAXLINE
- 1)] = '\n';
2545 /*****************************************************************************/
2548 * Port info, read from the /proc file system.
2551 static int stli_readproc(char *page
, char **start
, off_t off
, int count
, int *eof
, void *data
)
2555 int brdnr
, portnr
, totalport
;
2560 printk(KERN_DEBUG
"stli_readproc(page=%x,start=%x,off=%x,count=%d,eof=%x,"
2561 "data=%x\n", (int) page
, (int) start
, (int) off
, count
,
2562 (int) eof
, (int) data
);
2570 pos
+= sprintf(pos
, "%s: version %s", stli_drvtitle
,
2572 while (pos
< (page
+ MAXLINE
- 1))
2579 * We scan through for each board, panel and port. The offset is
2580 * calculated on the fly, and irrelevant ports are skipped.
2582 for (brdnr
= 0; (brdnr
< stli_nrbrds
); brdnr
++) {
2583 brdp
= stli_brds
[brdnr
];
2584 if (brdp
== (stlibrd_t
*) NULL
)
2586 if (brdp
->state
== 0)
2589 maxoff
= curoff
+ (brdp
->nrports
* MAXLINE
);
2590 if (off
>= maxoff
) {
2595 totalport
= brdnr
* STL_MAXPORTS
;
2596 for (portnr
= 0; (portnr
< brdp
->nrports
); portnr
++,
2598 portp
= brdp
->ports
[portnr
];
2599 if (portp
== (stliport_t
*) NULL
)
2601 if (off
>= (curoff
+= MAXLINE
))
2603 if ((pos
- page
+ MAXLINE
) > count
)
2605 pos
+= stli_portinfo(brdp
, portp
, totalport
, pos
);
2616 /*****************************************************************************/
2619 * Generic send command routine. This will send a message to the slave,
2620 * of the specified type with the specified argument. Must be very
2621 * careful of data that will be copied out from shared memory -
2622 * containing command results. The command completion is all done from
2623 * a poll routine that does not have user context. Therefore you cannot
2624 * copy back directly into user space, or to the kernel stack of a
2625 * process. This routine does not sleep, so can be called from anywhere.
2628 static void stli_sendcmd(stlibrd_t
*brdp
, stliport_t
*portp
, unsigned long cmd
, void *arg
, int size
, int copyback
)
2630 volatile cdkhdr_t
*hdrp
;
2631 volatile cdkctrl_t
*cp
;
2632 volatile unsigned char *bits
;
2633 unsigned long flags
;
2636 printk(KERN_DEBUG
"stli_sendcmd(brdp=%x,portp=%x,cmd=%x,arg=%x,size=%d,"
2637 "copyback=%d)\n", (int) brdp
, (int) portp
, (int) cmd
,
2638 (int) arg
, size
, copyback
);
2644 if (test_bit(ST_CMDING
, &portp
->state
)) {
2645 printk(KERN_ERR
"STALLION: command already busy, cmd=%x!\n",
2647 restore_flags(flags
);
2652 cp
= &((volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->ctrl
;
2654 memcpy((void *) &(cp
->args
[0]), arg
, size
);
2657 portp
->argsize
= size
;
2662 hdrp
= (volatile cdkhdr_t
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
2663 bits
= ((volatile unsigned char *) hdrp
) + brdp
->slaveoffset
+
2665 *bits
|= portp
->portbit
;
2666 set_bit(ST_CMDING
, &portp
->state
);
2668 restore_flags(flags
);
2671 /*****************************************************************************/
2674 * Read data from shared memory. This assumes that the shared memory
2675 * is enabled and that interrupts are off. Basically we just empty out
2676 * the shared memory buffer into the tty buffer. Must be careful to
2677 * handle the case where we fill up the tty buffer, but still have
2678 * more chars to unload.
2681 static void stli_read(stlibrd_t
*brdp
, stliport_t
*portp
)
2683 volatile cdkasyrq_t
*rp
;
2684 volatile char *shbuf
;
2685 struct tty_struct
*tty
;
2686 unsigned int head
, tail
, size
;
2687 unsigned int len
, stlen
;
2690 printk(KERN_DEBUG
"stli_read(brdp=%x,portp=%d)\n",
2691 (int) brdp
, (int) portp
);
2694 if (test_bit(ST_RXSTOP
, &portp
->state
))
2697 if (tty
== (struct tty_struct
*) NULL
)
2700 rp
= &((volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->rxq
;
2701 head
= (unsigned int) rp
->head
;
2702 if (head
!= ((unsigned int) rp
->head
))
2703 head
= (unsigned int) rp
->head
;
2704 tail
= (unsigned int) rp
->tail
;
2705 size
= portp
->rxsize
;
2710 len
= size
- (tail
- head
);
2711 stlen
= size
- tail
;
2714 len
= MIN(len
, (TTY_FLIPBUF_SIZE
- tty
->flip
.count
));
2715 shbuf
= (volatile char *) EBRDGETMEMPTR(brdp
, portp
->rxoffset
);
2718 stlen
= MIN(len
, stlen
);
2719 memcpy(tty
->flip
.char_buf_ptr
, (char *) (shbuf
+ tail
), stlen
);
2720 memset(tty
->flip
.flag_buf_ptr
, 0, stlen
);
2721 tty
->flip
.char_buf_ptr
+= stlen
;
2722 tty
->flip
.flag_buf_ptr
+= stlen
;
2723 tty
->flip
.count
+= stlen
;
2732 rp
= &((volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
))->rxq
;
2736 set_bit(ST_RXING
, &portp
->state
);
2738 tty_schedule_flip(tty
);
2741 /*****************************************************************************/
2744 * Set up and carry out any delayed commands. There is only a small set
2745 * of slave commands that can be done "off-level". So it is not too
2746 * difficult to deal with them here.
2749 static void stli_dodelaycmd(stliport_t
*portp
, volatile cdkctrl_t
*cp
)
2753 if (test_bit(ST_DOSIGS
, &portp
->state
)) {
2754 if (test_bit(ST_DOFLUSHTX
, &portp
->state
) &&
2755 test_bit(ST_DOFLUSHRX
, &portp
->state
))
2756 cmd
= A_SETSIGNALSF
;
2757 else if (test_bit(ST_DOFLUSHTX
, &portp
->state
))
2758 cmd
= A_SETSIGNALSFTX
;
2759 else if (test_bit(ST_DOFLUSHRX
, &portp
->state
))
2760 cmd
= A_SETSIGNALSFRX
;
2763 clear_bit(ST_DOFLUSHTX
, &portp
->state
);
2764 clear_bit(ST_DOFLUSHRX
, &portp
->state
);
2765 clear_bit(ST_DOSIGS
, &portp
->state
);
2766 memcpy((void *) &(cp
->args
[0]), (void *) &portp
->asig
,
2770 set_bit(ST_CMDING
, &portp
->state
);
2771 } else if (test_bit(ST_DOFLUSHTX
, &portp
->state
) ||
2772 test_bit(ST_DOFLUSHRX
, &portp
->state
)) {
2773 cmd
= ((test_bit(ST_DOFLUSHTX
, &portp
->state
)) ? FLUSHTX
: 0);
2774 cmd
|= ((test_bit(ST_DOFLUSHRX
, &portp
->state
)) ? FLUSHRX
: 0);
2775 clear_bit(ST_DOFLUSHTX
, &portp
->state
);
2776 clear_bit(ST_DOFLUSHRX
, &portp
->state
);
2777 memcpy((void *) &(cp
->args
[0]), (void *) &cmd
, sizeof(int));
2780 set_bit(ST_CMDING
, &portp
->state
);
2784 /*****************************************************************************/
2787 * Host command service checking. This handles commands or messages
2788 * coming from the slave to the host. Must have board shared memory
2789 * enabled and interrupts off when called. Notice that by servicing the
2790 * read data last we don't need to change the shared memory pointer
2791 * during processing (which is a slow IO operation).
2792 * Return value indicates if this port is still awaiting actions from
2793 * the slave (like open, command, or even TX data being sent). If 0
2794 * then port is still busy, otherwise no longer busy.
2797 static int stli_hostcmd(stlibrd_t
*brdp
, stliport_t
*portp
)
2799 volatile cdkasy_t
*ap
;
2800 volatile cdkctrl_t
*cp
;
2801 struct tty_struct
*tty
;
2803 unsigned long oldsigs
;
2807 printk(KERN_DEBUG
"stli_hostcmd(brdp=%x,channr=%d)\n",
2808 (int) brdp
, channr
);
2811 ap
= (volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
2815 * Check if we are waiting for an open completion message.
2817 if (test_bit(ST_OPENING
, &portp
->state
)) {
2818 rc
= (int) cp
->openarg
;
2819 if ((cp
->open
== 0) && (rc
!= 0)) {
2824 clear_bit(ST_OPENING
, &portp
->state
);
2825 wake_up_interruptible(&portp
->raw_wait
);
2830 * Check if we are waiting for a close completion message.
2832 if (test_bit(ST_CLOSING
, &portp
->state
)) {
2833 rc
= (int) cp
->closearg
;
2834 if ((cp
->close
== 0) && (rc
!= 0)) {
2839 clear_bit(ST_CLOSING
, &portp
->state
);
2840 wake_up_interruptible(&portp
->raw_wait
);
2845 * Check if we are waiting for a command completion message. We may
2846 * need to copy out the command results associated with this command.
2848 if (test_bit(ST_CMDING
, &portp
->state
)) {
2850 if ((cp
->cmd
== 0) && (rc
!= 0)) {
2853 if (portp
->argp
!= (void *) NULL
) {
2854 memcpy(portp
->argp
, (void *) &(cp
->args
[0]),
2856 portp
->argp
= (void *) NULL
;
2860 clear_bit(ST_CMDING
, &portp
->state
);
2861 stli_dodelaycmd(portp
, cp
);
2862 wake_up_interruptible(&portp
->raw_wait
);
2867 * Check for any notification messages ready. This includes lots of
2868 * different types of events - RX chars ready, RX break received,
2869 * TX data low or empty in the slave, modem signals changed state.
2878 if (nt
.signal
& SG_DCD
) {
2879 oldsigs
= portp
->sigs
;
2880 portp
->sigs
= stli_mktiocm(nt
.sigvalue
);
2881 clear_bit(ST_GETSIGS
, &portp
->state
);
2882 if ((portp
->sigs
& TIOCM_CD
) &&
2883 ((oldsigs
& TIOCM_CD
) == 0))
2884 wake_up_interruptible(&portp
->open_wait
);
2885 if ((oldsigs
& TIOCM_CD
) &&
2886 ((portp
->sigs
& TIOCM_CD
) == 0)) {
2887 if (portp
->flags
& ASYNC_CHECK_CD
) {
2889 schedule_work(&portp
->tqhangup
);
2894 if (nt
.data
& DT_TXEMPTY
)
2895 clear_bit(ST_TXBUSY
, &portp
->state
);
2896 if (nt
.data
& (DT_TXEMPTY
| DT_TXLOW
)) {
2897 if (tty
!= (struct tty_struct
*) NULL
) {
2898 if ((tty
->flags
& (1 << TTY_DO_WRITE_WAKEUP
)) &&
2899 tty
->ldisc
.write_wakeup
) {
2900 (tty
->ldisc
.write_wakeup
)(tty
);
2903 wake_up_interruptible(&tty
->write_wait
);
2907 if ((nt
.data
& DT_RXBREAK
) && (portp
->rxmarkmsk
& BRKINT
)) {
2908 if (tty
!= (struct tty_struct
*) NULL
) {
2909 if (tty
->flip
.count
< TTY_FLIPBUF_SIZE
) {
2911 *tty
->flip
.flag_buf_ptr
++ = TTY_BREAK
;
2912 *tty
->flip
.char_buf_ptr
++ = 0;
2913 if (portp
->flags
& ASYNC_SAK
) {
2917 tty_schedule_flip(tty
);
2922 if (nt
.data
& DT_RXBUSY
) {
2924 stli_read(brdp
, portp
);
2929 * It might seem odd that we are checking for more RX chars here.
2930 * But, we need to handle the case where the tty buffer was previously
2931 * filled, but we had more characters to pass up. The slave will not
2932 * send any more RX notify messages until the RX buffer has been emptied.
2933 * But it will leave the service bits on (since the buffer is not empty).
2934 * So from here we can try to process more RX chars.
2936 if ((!donerx
) && test_bit(ST_RXING
, &portp
->state
)) {
2937 clear_bit(ST_RXING
, &portp
->state
);
2938 stli_read(brdp
, portp
);
2941 return((test_bit(ST_OPENING
, &portp
->state
) ||
2942 test_bit(ST_CLOSING
, &portp
->state
) ||
2943 test_bit(ST_CMDING
, &portp
->state
) ||
2944 test_bit(ST_TXBUSY
, &portp
->state
) ||
2945 test_bit(ST_RXING
, &portp
->state
)) ? 0 : 1);
2948 /*****************************************************************************/
2951 * Service all ports on a particular board. Assumes that the boards
2952 * shared memory is enabled, and that the page pointer is pointed
2953 * at the cdk header structure.
2956 static void stli_brdpoll(stlibrd_t
*brdp
, volatile cdkhdr_t
*hdrp
)
2959 unsigned char hostbits
[(STL_MAXCHANS
/ 8) + 1];
2960 unsigned char slavebits
[(STL_MAXCHANS
/ 8) + 1];
2961 unsigned char *slavep
;
2962 int bitpos
, bitat
, bitsize
;
2963 int channr
, nrdevs
, slavebitchange
;
2965 bitsize
= brdp
->bitsize
;
2966 nrdevs
= brdp
->nrdevs
;
2969 * Check if slave wants any service. Basically we try to do as
2970 * little work as possible here. There are 2 levels of service
2971 * bits. So if there is nothing to do we bail early. We check
2972 * 8 service bits at a time in the inner loop, so we can bypass
2973 * the lot if none of them want service.
2975 memcpy(&hostbits
[0], (((unsigned char *) hdrp
) + brdp
->hostoffset
),
2978 memset(&slavebits
[0], 0, bitsize
);
2981 for (bitpos
= 0; (bitpos
< bitsize
); bitpos
++) {
2982 if (hostbits
[bitpos
] == 0)
2984 channr
= bitpos
* 8;
2985 for (bitat
= 0x1; (channr
< nrdevs
); channr
++, bitat
<<= 1) {
2986 if (hostbits
[bitpos
] & bitat
) {
2987 portp
= brdp
->ports
[(channr
- 1)];
2988 if (stli_hostcmd(brdp
, portp
)) {
2990 slavebits
[bitpos
] |= bitat
;
2997 * If any of the ports are no longer busy then update them in the
2998 * slave request bits. We need to do this after, since a host port
2999 * service may initiate more slave requests.
3001 if (slavebitchange
) {
3002 hdrp
= (volatile cdkhdr_t
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
3003 slavep
= ((unsigned char *) hdrp
) + brdp
->slaveoffset
;
3004 for (bitpos
= 0; (bitpos
< bitsize
); bitpos
++) {
3005 if (slavebits
[bitpos
])
3006 slavep
[bitpos
] &= ~slavebits
[bitpos
];
3011 /*****************************************************************************/
3014 * Driver poll routine. This routine polls the boards in use and passes
3015 * messages back up to host when necessary. This is actually very
3016 * CPU efficient, since we will always have the kernel poll clock, it
3017 * adds only a few cycles when idle (since board service can be
3018 * determined very easily), but when loaded generates no interrupts
3019 * (with their expensive associated context change).
3022 static void stli_poll(unsigned long arg
)
3024 volatile cdkhdr_t
*hdrp
;
3028 stli_timerlist
.expires
= STLI_TIMEOUT
;
3029 add_timer(&stli_timerlist
);
3032 * Check each board and do any servicing required.
3034 for (brdnr
= 0; (brdnr
< stli_nrbrds
); brdnr
++) {
3035 brdp
= stli_brds
[brdnr
];
3036 if (brdp
== (stlibrd_t
*) NULL
)
3038 if ((brdp
->state
& BST_STARTED
) == 0)
3042 hdrp
= (volatile cdkhdr_t
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
3044 stli_brdpoll(brdp
, hdrp
);
3049 /*****************************************************************************/
3052 * Translate the termios settings into the port setting structure of
3056 static void stli_mkasyport(stliport_t
*portp
, asyport_t
*pp
, struct termios
*tiosp
)
3059 printk(KERN_DEBUG
"stli_mkasyport(portp=%x,pp=%x,tiosp=%d)\n",
3060 (int) portp
, (int) pp
, (int) tiosp
);
3063 memset(pp
, 0, sizeof(asyport_t
));
3066 * Start of by setting the baud, char size, parity and stop bit info.
3068 pp
->baudout
= tiosp
->c_cflag
& CBAUD
;
3069 if (pp
->baudout
& CBAUDEX
) {
3070 pp
->baudout
&= ~CBAUDEX
;
3071 if ((pp
->baudout
< 1) || (pp
->baudout
> 4))
3072 tiosp
->c_cflag
&= ~CBAUDEX
;
3076 pp
->baudout
= stli_baudrates
[pp
->baudout
];
3077 if ((tiosp
->c_cflag
& CBAUD
) == B38400
) {
3078 if ((portp
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_HI
)
3079 pp
->baudout
= 57600;
3080 else if ((portp
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_VHI
)
3081 pp
->baudout
= 115200;
3082 else if ((portp
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_SHI
)
3083 pp
->baudout
= 230400;
3084 else if ((portp
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_WARP
)
3085 pp
->baudout
= 460800;
3086 else if ((portp
->flags
& ASYNC_SPD_MASK
) == ASYNC_SPD_CUST
)
3087 pp
->baudout
= (portp
->baud_base
/ portp
->custom_divisor
);
3089 if (pp
->baudout
> STL_MAXBAUD
)
3090 pp
->baudout
= STL_MAXBAUD
;
3091 pp
->baudin
= pp
->baudout
;
3093 switch (tiosp
->c_cflag
& CSIZE
) {
3108 if (tiosp
->c_cflag
& CSTOPB
)
3109 pp
->stopbs
= PT_STOP2
;
3111 pp
->stopbs
= PT_STOP1
;
3113 if (tiosp
->c_cflag
& PARENB
) {
3114 if (tiosp
->c_cflag
& PARODD
)
3115 pp
->parity
= PT_ODDPARITY
;
3117 pp
->parity
= PT_EVENPARITY
;
3119 pp
->parity
= PT_NOPARITY
;
3123 * Set up any flow control options enabled.
3125 if (tiosp
->c_iflag
& IXON
) {
3127 if (tiosp
->c_iflag
& IXANY
)
3128 pp
->flow
|= F_IXANY
;
3130 if (tiosp
->c_cflag
& CRTSCTS
)
3131 pp
->flow
|= (F_RTSFLOW
| F_CTSFLOW
);
3133 pp
->startin
= tiosp
->c_cc
[VSTART
];
3134 pp
->stopin
= tiosp
->c_cc
[VSTOP
];
3135 pp
->startout
= tiosp
->c_cc
[VSTART
];
3136 pp
->stopout
= tiosp
->c_cc
[VSTOP
];
3139 * Set up the RX char marking mask with those RX error types we must
3140 * catch. We can get the slave to help us out a little here, it will
3141 * ignore parity errors and breaks for us, and mark parity errors in
3144 if (tiosp
->c_iflag
& IGNPAR
)
3145 pp
->iflag
|= FI_IGNRXERRS
;
3146 if (tiosp
->c_iflag
& IGNBRK
)
3147 pp
->iflag
|= FI_IGNBREAK
;
3149 portp
->rxmarkmsk
= 0;
3150 if (tiosp
->c_iflag
& (INPCK
| PARMRK
))
3151 pp
->iflag
|= FI_1MARKRXERRS
;
3152 if (tiosp
->c_iflag
& BRKINT
)
3153 portp
->rxmarkmsk
|= BRKINT
;
3156 * Set up clocal processing as required.
3158 if (tiosp
->c_cflag
& CLOCAL
)
3159 portp
->flags
&= ~ASYNC_CHECK_CD
;
3161 portp
->flags
|= ASYNC_CHECK_CD
;
3164 * Transfer any persistent flags into the asyport structure.
3166 pp
->pflag
= (portp
->pflag
& 0xffff);
3167 pp
->vmin
= (portp
->pflag
& P_RXIMIN
) ? 1 : 0;
3168 pp
->vtime
= (portp
->pflag
& P_RXITIME
) ? 1 : 0;
3169 pp
->cc
[1] = (portp
->pflag
& P_RXTHOLD
) ? 1 : 0;
3172 /*****************************************************************************/
3175 * Construct a slave signals structure for setting the DTR and RTS
3176 * signals as specified.
3179 static void stli_mkasysigs(asysigs_t
*sp
, int dtr
, int rts
)
3182 printk(KERN_DEBUG
"stli_mkasysigs(sp=%x,dtr=%d,rts=%d)\n",
3183 (int) sp
, dtr
, rts
);
3186 memset(sp
, 0, sizeof(asysigs_t
));
3188 sp
->signal
|= SG_DTR
;
3189 sp
->sigvalue
|= ((dtr
> 0) ? SG_DTR
: 0);
3192 sp
->signal
|= SG_RTS
;
3193 sp
->sigvalue
|= ((rts
> 0) ? SG_RTS
: 0);
3197 /*****************************************************************************/
3200 * Convert the signals returned from the slave into a local TIOCM type
3201 * signals value. We keep them locally in TIOCM format.
3204 static long stli_mktiocm(unsigned long sigvalue
)
3209 printk(KERN_DEBUG
"stli_mktiocm(sigvalue=%x)\n", (int) sigvalue
);
3213 tiocm
|= ((sigvalue
& SG_DCD
) ? TIOCM_CD
: 0);
3214 tiocm
|= ((sigvalue
& SG_CTS
) ? TIOCM_CTS
: 0);
3215 tiocm
|= ((sigvalue
& SG_RI
) ? TIOCM_RI
: 0);
3216 tiocm
|= ((sigvalue
& SG_DSR
) ? TIOCM_DSR
: 0);
3217 tiocm
|= ((sigvalue
& SG_DTR
) ? TIOCM_DTR
: 0);
3218 tiocm
|= ((sigvalue
& SG_RTS
) ? TIOCM_RTS
: 0);
3222 /*****************************************************************************/
3225 * All panels and ports actually attached have been worked out. All
3226 * we need to do here is set up the appropriate per port data structures.
3229 static int stli_initports(stlibrd_t
*brdp
)
3232 int i
, panelnr
, panelport
;
3235 printk(KERN_DEBUG
"stli_initports(brdp=%x)\n", (int) brdp
);
3238 for (i
= 0, panelnr
= 0, panelport
= 0; (i
< brdp
->nrports
); i
++) {
3239 portp
= (stliport_t
*) stli_memalloc(sizeof(stliport_t
));
3240 if (portp
== (stliport_t
*) NULL
) {
3241 printk("STALLION: failed to allocate port structure\n");
3245 memset(portp
, 0, sizeof(stliport_t
));
3246 portp
->magic
= STLI_PORTMAGIC
;
3248 portp
->brdnr
= brdp
->brdnr
;
3249 portp
->panelnr
= panelnr
;
3250 portp
->baud_base
= STL_BAUDBASE
;
3251 portp
->close_delay
= STL_CLOSEDELAY
;
3252 portp
->closing_wait
= 30 * HZ
;
3253 INIT_WORK(&portp
->tqhangup
, stli_dohangup
, portp
);
3254 init_waitqueue_head(&portp
->open_wait
);
3255 init_waitqueue_head(&portp
->close_wait
);
3256 init_waitqueue_head(&portp
->raw_wait
);
3258 if (panelport
>= brdp
->panels
[panelnr
]) {
3262 brdp
->ports
[i
] = portp
;
3268 /*****************************************************************************/
3271 * All the following routines are board specific hardware operations.
3274 static void stli_ecpinit(stlibrd_t
*brdp
)
3276 unsigned long memconf
;
3279 printk(KERN_DEBUG
"stli_ecpinit(brdp=%d)\n", (int) brdp
);
3282 outb(ECP_ATSTOP
, (brdp
->iobase
+ ECP_ATCONFR
));
3284 outb(ECP_ATDISABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
3287 memconf
= (brdp
->memaddr
& ECP_ATADDRMASK
) >> ECP_ATADDRSHFT
;
3288 outb(memconf
, (brdp
->iobase
+ ECP_ATMEMAR
));
3291 /*****************************************************************************/
3293 static void stli_ecpenable(stlibrd_t
*brdp
)
3296 printk(KERN_DEBUG
"stli_ecpenable(brdp=%x)\n", (int) brdp
);
3298 outb(ECP_ATENABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
3301 /*****************************************************************************/
3303 static void stli_ecpdisable(stlibrd_t
*brdp
)
3306 printk(KERN_DEBUG
"stli_ecpdisable(brdp=%x)\n", (int) brdp
);
3308 outb(ECP_ATDISABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
3311 /*****************************************************************************/
3313 static char *stli_ecpgetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
)
3319 printk(KERN_DEBUG
"stli_ecpgetmemptr(brdp=%x,offset=%x)\n", (int) brdp
,
3323 if (offset
> brdp
->memsize
) {
3324 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3325 "range at line=%d(%d), brd=%d\n",
3326 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3330 ptr
= brdp
->membase
+ (offset
% ECP_ATPAGESIZE
);
3331 val
= (unsigned char) (offset
/ ECP_ATPAGESIZE
);
3333 outb(val
, (brdp
->iobase
+ ECP_ATMEMPR
));
3337 /*****************************************************************************/
3339 static void stli_ecpreset(stlibrd_t
*brdp
)
3342 printk(KERN_DEBUG
"stli_ecpreset(brdp=%x)\n", (int) brdp
);
3345 outb(ECP_ATSTOP
, (brdp
->iobase
+ ECP_ATCONFR
));
3347 outb(ECP_ATDISABLE
, (brdp
->iobase
+ ECP_ATCONFR
));
3351 /*****************************************************************************/
3353 static void stli_ecpintr(stlibrd_t
*brdp
)
3356 printk(KERN_DEBUG
"stli_ecpintr(brdp=%x)\n", (int) brdp
);
3358 outb(0x1, brdp
->iobase
);
3361 /*****************************************************************************/
3364 * The following set of functions act on ECP EISA boards.
3367 static void stli_ecpeiinit(stlibrd_t
*brdp
)
3369 unsigned long memconf
;
3372 printk(KERN_DEBUG
"stli_ecpeiinit(brdp=%x)\n", (int) brdp
);
3375 outb(0x1, (brdp
->iobase
+ ECP_EIBRDENAB
));
3376 outb(ECP_EISTOP
, (brdp
->iobase
+ ECP_EICONFR
));
3378 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
3381 memconf
= (brdp
->memaddr
& ECP_EIADDRMASKL
) >> ECP_EIADDRSHFTL
;
3382 outb(memconf
, (brdp
->iobase
+ ECP_EIMEMARL
));
3383 memconf
= (brdp
->memaddr
& ECP_EIADDRMASKH
) >> ECP_EIADDRSHFTH
;
3384 outb(memconf
, (brdp
->iobase
+ ECP_EIMEMARH
));
3387 /*****************************************************************************/
3389 static void stli_ecpeienable(stlibrd_t
*brdp
)
3391 outb(ECP_EIENABLE
, (brdp
->iobase
+ ECP_EICONFR
));
3394 /*****************************************************************************/
3396 static void stli_ecpeidisable(stlibrd_t
*brdp
)
3398 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
3401 /*****************************************************************************/
3403 static char *stli_ecpeigetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
)
3409 printk(KERN_DEBUG
"stli_ecpeigetmemptr(brdp=%x,offset=%x,line=%d)\n",
3410 (int) brdp
, (int) offset
, line
);
3413 if (offset
> brdp
->memsize
) {
3414 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3415 "range at line=%d(%d), brd=%d\n",
3416 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3420 ptr
= brdp
->membase
+ (offset
% ECP_EIPAGESIZE
);
3421 if (offset
< ECP_EIPAGESIZE
)
3424 val
= ECP_EIENABLE
| 0x40;
3426 outb(val
, (brdp
->iobase
+ ECP_EICONFR
));
3430 /*****************************************************************************/
3432 static void stli_ecpeireset(stlibrd_t
*brdp
)
3434 outb(ECP_EISTOP
, (brdp
->iobase
+ ECP_EICONFR
));
3436 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
3440 /*****************************************************************************/
3443 * The following set of functions act on ECP MCA boards.
3446 static void stli_ecpmcenable(stlibrd_t
*brdp
)
3448 outb(ECP_MCENABLE
, (brdp
->iobase
+ ECP_MCCONFR
));
3451 /*****************************************************************************/
3453 static void stli_ecpmcdisable(stlibrd_t
*brdp
)
3455 outb(ECP_MCDISABLE
, (brdp
->iobase
+ ECP_MCCONFR
));
3458 /*****************************************************************************/
3460 static char *stli_ecpmcgetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
)
3465 if (offset
> brdp
->memsize
) {
3466 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3467 "range at line=%d(%d), brd=%d\n",
3468 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3472 ptr
= brdp
->membase
+ (offset
% ECP_MCPAGESIZE
);
3473 val
= ((unsigned char) (offset
/ ECP_MCPAGESIZE
)) | ECP_MCENABLE
;
3475 outb(val
, (brdp
->iobase
+ ECP_MCCONFR
));
3479 /*****************************************************************************/
3481 static void stli_ecpmcreset(stlibrd_t
*brdp
)
3483 outb(ECP_MCSTOP
, (brdp
->iobase
+ ECP_MCCONFR
));
3485 outb(ECP_MCDISABLE
, (brdp
->iobase
+ ECP_MCCONFR
));
3489 /*****************************************************************************/
3492 * The following set of functions act on ECP PCI boards.
3495 static void stli_ecppciinit(stlibrd_t
*brdp
)
3498 printk(KERN_DEBUG
"stli_ecppciinit(brdp=%x)\n", (int) brdp
);
3501 outb(ECP_PCISTOP
, (brdp
->iobase
+ ECP_PCICONFR
));
3503 outb(0, (brdp
->iobase
+ ECP_PCICONFR
));
3507 /*****************************************************************************/
3509 static char *stli_ecppcigetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
)
3515 printk(KERN_DEBUG
"stli_ecppcigetmemptr(brdp=%x,offset=%x,line=%d)\n",
3516 (int) brdp
, (int) offset
, line
);
3519 if (offset
> brdp
->memsize
) {
3520 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3521 "range at line=%d(%d), board=%d\n",
3522 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3526 ptr
= brdp
->membase
+ (offset
% ECP_PCIPAGESIZE
);
3527 val
= (offset
/ ECP_PCIPAGESIZE
) << 1;
3529 outb(val
, (brdp
->iobase
+ ECP_PCICONFR
));
3533 /*****************************************************************************/
3535 static void stli_ecppcireset(stlibrd_t
*brdp
)
3537 outb(ECP_PCISTOP
, (brdp
->iobase
+ ECP_PCICONFR
));
3539 outb(0, (brdp
->iobase
+ ECP_PCICONFR
));
3543 /*****************************************************************************/
3546 * The following routines act on ONboards.
3549 static void stli_onbinit(stlibrd_t
*brdp
)
3551 unsigned long memconf
;
3554 printk(KERN_DEBUG
"stli_onbinit(brdp=%d)\n", (int) brdp
);
3557 outb(ONB_ATSTOP
, (brdp
->iobase
+ ONB_ATCONFR
));
3559 outb(ONB_ATDISABLE
, (brdp
->iobase
+ ONB_ATCONFR
));
3562 memconf
= (brdp
->memaddr
& ONB_ATADDRMASK
) >> ONB_ATADDRSHFT
;
3563 outb(memconf
, (brdp
->iobase
+ ONB_ATMEMAR
));
3564 outb(0x1, brdp
->iobase
);
3568 /*****************************************************************************/
3570 static void stli_onbenable(stlibrd_t
*brdp
)
3573 printk(KERN_DEBUG
"stli_onbenable(brdp=%x)\n", (int) brdp
);
3575 outb((brdp
->enabval
| ONB_ATENABLE
), (brdp
->iobase
+ ONB_ATCONFR
));
3578 /*****************************************************************************/
3580 static void stli_onbdisable(stlibrd_t
*brdp
)
3583 printk(KERN_DEBUG
"stli_onbdisable(brdp=%x)\n", (int) brdp
);
3585 outb((brdp
->enabval
| ONB_ATDISABLE
), (brdp
->iobase
+ ONB_ATCONFR
));
3588 /*****************************************************************************/
3590 static char *stli_onbgetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
)
3595 printk(KERN_DEBUG
"stli_onbgetmemptr(brdp=%x,offset=%x)\n", (int) brdp
,
3599 if (offset
> brdp
->memsize
) {
3600 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3601 "range at line=%d(%d), brd=%d\n",
3602 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3605 ptr
= brdp
->membase
+ (offset
% ONB_ATPAGESIZE
);
3610 /*****************************************************************************/
3612 static void stli_onbreset(stlibrd_t
*brdp
)
3616 printk(KERN_DEBUG
"stli_onbreset(brdp=%x)\n", (int) brdp
);
3619 outb(ONB_ATSTOP
, (brdp
->iobase
+ ONB_ATCONFR
));
3621 outb(ONB_ATDISABLE
, (brdp
->iobase
+ ONB_ATCONFR
));
3625 /*****************************************************************************/
3628 * The following routines act on ONboard EISA.
3631 static void stli_onbeinit(stlibrd_t
*brdp
)
3633 unsigned long memconf
;
3636 printk(KERN_DEBUG
"stli_onbeinit(brdp=%d)\n", (int) brdp
);
3639 outb(0x1, (brdp
->iobase
+ ONB_EIBRDENAB
));
3640 outb(ONB_EISTOP
, (brdp
->iobase
+ ONB_EICONFR
));
3642 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
3645 memconf
= (brdp
->memaddr
& ONB_EIADDRMASKL
) >> ONB_EIADDRSHFTL
;
3646 outb(memconf
, (brdp
->iobase
+ ONB_EIMEMARL
));
3647 memconf
= (brdp
->memaddr
& ONB_EIADDRMASKH
) >> ONB_EIADDRSHFTH
;
3648 outb(memconf
, (brdp
->iobase
+ ONB_EIMEMARH
));
3649 outb(0x1, brdp
->iobase
);
3653 /*****************************************************************************/
3655 static void stli_onbeenable(stlibrd_t
*brdp
)
3658 printk(KERN_DEBUG
"stli_onbeenable(brdp=%x)\n", (int) brdp
);
3660 outb(ONB_EIENABLE
, (brdp
->iobase
+ ONB_EICONFR
));
3663 /*****************************************************************************/
3665 static void stli_onbedisable(stlibrd_t
*brdp
)
3668 printk(KERN_DEBUG
"stli_onbedisable(brdp=%x)\n", (int) brdp
);
3670 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
3673 /*****************************************************************************/
3675 static char *stli_onbegetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
)
3681 printk(KERN_DEBUG
"stli_onbegetmemptr(brdp=%x,offset=%x,line=%d)\n",
3682 (int) brdp
, (int) offset
, line
);
3685 if (offset
> brdp
->memsize
) {
3686 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3687 "range at line=%d(%d), brd=%d\n",
3688 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3692 ptr
= brdp
->membase
+ (offset
% ONB_EIPAGESIZE
);
3693 if (offset
< ONB_EIPAGESIZE
)
3696 val
= ONB_EIENABLE
| 0x40;
3698 outb(val
, (brdp
->iobase
+ ONB_EICONFR
));
3702 /*****************************************************************************/
3704 static void stli_onbereset(stlibrd_t
*brdp
)
3708 printk(KERN_ERR
"stli_onbereset(brdp=%x)\n", (int) brdp
);
3711 outb(ONB_EISTOP
, (brdp
->iobase
+ ONB_EICONFR
));
3713 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
3717 /*****************************************************************************/
3720 * The following routines act on Brumby boards.
3723 static void stli_bbyinit(stlibrd_t
*brdp
)
3727 printk(KERN_ERR
"stli_bbyinit(brdp=%d)\n", (int) brdp
);
3730 outb(BBY_ATSTOP
, (brdp
->iobase
+ BBY_ATCONFR
));
3732 outb(0, (brdp
->iobase
+ BBY_ATCONFR
));
3734 outb(0x1, brdp
->iobase
);
3738 /*****************************************************************************/
3740 static char *stli_bbygetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
)
3746 printk(KERN_ERR
"stli_bbygetmemptr(brdp=%x,offset=%x)\n", (int) brdp
,
3750 if (offset
> brdp
->memsize
) {
3751 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3752 "range at line=%d(%d), brd=%d\n",
3753 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3757 ptr
= brdp
->membase
+ (offset
% BBY_PAGESIZE
);
3758 val
= (unsigned char) (offset
/ BBY_PAGESIZE
);
3760 outb(val
, (brdp
->iobase
+ BBY_ATCONFR
));
3764 /*****************************************************************************/
3766 static void stli_bbyreset(stlibrd_t
*brdp
)
3770 printk(KERN_DEBUG
"stli_bbyreset(brdp=%x)\n", (int) brdp
);
3773 outb(BBY_ATSTOP
, (brdp
->iobase
+ BBY_ATCONFR
));
3775 outb(0, (brdp
->iobase
+ BBY_ATCONFR
));
3779 /*****************************************************************************/
3782 * The following routines act on original old Stallion boards.
3785 static void stli_stalinit(stlibrd_t
*brdp
)
3789 printk(KERN_DEBUG
"stli_stalinit(brdp=%d)\n", (int) brdp
);
3792 outb(0x1, brdp
->iobase
);
3796 /*****************************************************************************/
3798 static char *stli_stalgetmemptr(stlibrd_t
*brdp
, unsigned long offset
, int line
)
3803 printk(KERN_DEBUG
"stli_stalgetmemptr(brdp=%x,offset=%x)\n", (int) brdp
,
3807 if (offset
> brdp
->memsize
) {
3808 printk(KERN_ERR
"STALLION: shared memory pointer=%x out of "
3809 "range at line=%d(%d), brd=%d\n",
3810 (int) offset
, line
, __LINE__
, brdp
->brdnr
);
3813 ptr
= brdp
->membase
+ (offset
% STAL_PAGESIZE
);
3818 /*****************************************************************************/
3820 static void stli_stalreset(stlibrd_t
*brdp
)
3822 volatile unsigned long *vecp
;
3825 printk(KERN_DEBUG
"stli_stalreset(brdp=%x)\n", (int) brdp
);
3828 vecp
= (volatile unsigned long *) (brdp
->membase
+ 0x30);
3830 outb(0, brdp
->iobase
);
3834 /*****************************************************************************/
3837 * Try to find an ECP board and initialize it. This handles only ECP
3841 static int stli_initecp(stlibrd_t
*brdp
)
3845 unsigned int status
, nxtid
;
3847 int panelnr
, nrports
;
3850 printk(KERN_DEBUG
"stli_initecp(brdp=%x)\n", (int) brdp
);
3853 if (!request_region(brdp
->iobase
, brdp
->iosize
, "istallion"))
3856 if ((brdp
->iobase
== 0) || (brdp
->memaddr
== 0))
3858 release_region(brdp
->iobase
, brdp
->iosize
);
3862 brdp
->iosize
= ECP_IOSIZE
;
3865 * Based on the specific board type setup the common vars to access
3866 * and enable shared memory. Set all board specific information now
3869 switch (brdp
->brdtype
) {
3871 brdp
->membase
= (void *) brdp
->memaddr
;
3872 brdp
->memsize
= ECP_MEMSIZE
;
3873 brdp
->pagesize
= ECP_ATPAGESIZE
;
3874 brdp
->init
= stli_ecpinit
;
3875 brdp
->enable
= stli_ecpenable
;
3876 brdp
->reenable
= stli_ecpenable
;
3877 brdp
->disable
= stli_ecpdisable
;
3878 brdp
->getmemptr
= stli_ecpgetmemptr
;
3879 brdp
->intr
= stli_ecpintr
;
3880 brdp
->reset
= stli_ecpreset
;
3881 name
= "serial(EC8/64)";
3885 brdp
->membase
= (void *) brdp
->memaddr
;
3886 brdp
->memsize
= ECP_MEMSIZE
;
3887 brdp
->pagesize
= ECP_EIPAGESIZE
;
3888 brdp
->init
= stli_ecpeiinit
;
3889 brdp
->enable
= stli_ecpeienable
;
3890 brdp
->reenable
= stli_ecpeienable
;
3891 brdp
->disable
= stli_ecpeidisable
;
3892 brdp
->getmemptr
= stli_ecpeigetmemptr
;
3893 brdp
->intr
= stli_ecpintr
;
3894 brdp
->reset
= stli_ecpeireset
;
3895 name
= "serial(EC8/64-EI)";
3899 brdp
->membase
= (void *) brdp
->memaddr
;
3900 brdp
->memsize
= ECP_MEMSIZE
;
3901 brdp
->pagesize
= ECP_MCPAGESIZE
;
3903 brdp
->enable
= stli_ecpmcenable
;
3904 brdp
->reenable
= stli_ecpmcenable
;
3905 brdp
->disable
= stli_ecpmcdisable
;
3906 brdp
->getmemptr
= stli_ecpmcgetmemptr
;
3907 brdp
->intr
= stli_ecpintr
;
3908 brdp
->reset
= stli_ecpmcreset
;
3909 name
= "serial(EC8/64-MCA)";
3913 brdp
->membase
= (void *) brdp
->memaddr
;
3914 brdp
->memsize
= ECP_PCIMEMSIZE
;
3915 brdp
->pagesize
= ECP_PCIPAGESIZE
;
3916 brdp
->init
= stli_ecppciinit
;
3917 brdp
->enable
= NULL
;
3918 brdp
->reenable
= NULL
;
3919 brdp
->disable
= NULL
;
3920 brdp
->getmemptr
= stli_ecppcigetmemptr
;
3921 brdp
->intr
= stli_ecpintr
;
3922 brdp
->reset
= stli_ecppcireset
;
3923 name
= "serial(EC/RA-PCI)";
3927 release_region(brdp
->iobase
, brdp
->iosize
);
3932 * The per-board operations structure is all set up, so now let's go
3933 * and get the board operational. Firstly initialize board configuration
3934 * registers. Set the memory mapping info so we can get at the boards
3939 brdp
->membase
= ioremap(brdp
->memaddr
, brdp
->memsize
);
3940 if (brdp
->membase
== (void *) NULL
)
3942 release_region(brdp
->iobase
, brdp
->iosize
);
3947 * Now that all specific code is set up, enable the shared memory and
3948 * look for the a signature area that will tell us exactly what board
3949 * this is, and what it is connected to it.
3952 sigsp
= (cdkecpsig_t
*) EBRDGETMEMPTR(brdp
, CDK_SIGADDR
);
3953 memcpy(&sig
, sigsp
, sizeof(cdkecpsig_t
));
3957 printk("%s(%d): sig-> magic=%x rom=%x panel=%x,%x,%x,%x,%x,%x,%x,%x\n",
3958 __FILE__
, __LINE__
, (int) sig
.magic
, sig
.romver
, sig
.panelid
[0],
3959 (int) sig
.panelid
[1], (int) sig
.panelid
[2],
3960 (int) sig
.panelid
[3], (int) sig
.panelid
[4],
3961 (int) sig
.panelid
[5], (int) sig
.panelid
[6],
3962 (int) sig
.panelid
[7]);
3965 if (sig
.magic
!= ECP_MAGIC
)
3967 release_region(brdp
->iobase
, brdp
->iosize
);
3972 * Scan through the signature looking at the panels connected to the
3973 * board. Calculate the total number of ports as we go.
3975 for (panelnr
= 0, nxtid
= 0; (panelnr
< STL_MAXPANELS
); panelnr
++) {
3976 status
= sig
.panelid
[nxtid
];
3977 if ((status
& ECH_PNLIDMASK
) != nxtid
)
3980 brdp
->panelids
[panelnr
] = status
;
3981 nrports
= (status
& ECH_PNL16PORT
) ? 16 : 8;
3982 if ((nrports
== 16) && ((status
& ECH_PNLXPID
) == 0))
3984 brdp
->panels
[panelnr
] = nrports
;
3985 brdp
->nrports
+= nrports
;
3991 brdp
->state
|= BST_FOUND
;
3995 /*****************************************************************************/
3998 * Try to find an ONboard, Brumby or Stallion board and initialize it.
3999 * This handles only these board types.
4002 static int stli_initonb(stlibrd_t
*brdp
)
4010 printk(KERN_DEBUG
"stli_initonb(brdp=%x)\n", (int) brdp
);
4014 * Do a basic sanity check on the IO and memory addresses.
4016 if ((brdp
->iobase
== 0) || (brdp
->memaddr
== 0))
4019 brdp
->iosize
= ONB_IOSIZE
;
4021 if (!request_region(brdp
->iobase
, brdp
->iosize
, "istallion"))
4025 * Based on the specific board type setup the common vars to access
4026 * and enable shared memory. Set all board specific information now
4029 switch (brdp
->brdtype
) {
4033 case BRD_ONBOARD2_32
:
4035 brdp
->membase
= (void *) brdp
->memaddr
;
4036 brdp
->memsize
= ONB_MEMSIZE
;
4037 brdp
->pagesize
= ONB_ATPAGESIZE
;
4038 brdp
->init
= stli_onbinit
;
4039 brdp
->enable
= stli_onbenable
;
4040 brdp
->reenable
= stli_onbenable
;
4041 brdp
->disable
= stli_onbdisable
;
4042 brdp
->getmemptr
= stli_onbgetmemptr
;
4043 brdp
->intr
= stli_ecpintr
;
4044 brdp
->reset
= stli_onbreset
;
4045 if (brdp
->memaddr
> 0x100000)
4046 brdp
->enabval
= ONB_MEMENABHI
;
4048 brdp
->enabval
= ONB_MEMENABLO
;
4049 name
= "serial(ONBoard)";
4053 brdp
->membase
= (void *) brdp
->memaddr
;
4054 brdp
->memsize
= ONB_EIMEMSIZE
;
4055 brdp
->pagesize
= ONB_EIPAGESIZE
;
4056 brdp
->init
= stli_onbeinit
;
4057 brdp
->enable
= stli_onbeenable
;
4058 brdp
->reenable
= stli_onbeenable
;
4059 brdp
->disable
= stli_onbedisable
;
4060 brdp
->getmemptr
= stli_onbegetmemptr
;
4061 brdp
->intr
= stli_ecpintr
;
4062 brdp
->reset
= stli_onbereset
;
4063 name
= "serial(ONBoard/E)";
4069 brdp
->membase
= (void *) brdp
->memaddr
;
4070 brdp
->memsize
= BBY_MEMSIZE
;
4071 brdp
->pagesize
= BBY_PAGESIZE
;
4072 brdp
->init
= stli_bbyinit
;
4073 brdp
->enable
= NULL
;
4074 brdp
->reenable
= NULL
;
4075 brdp
->disable
= NULL
;
4076 brdp
->getmemptr
= stli_bbygetmemptr
;
4077 brdp
->intr
= stli_ecpintr
;
4078 brdp
->reset
= stli_bbyreset
;
4079 name
= "serial(Brumby)";
4083 brdp
->membase
= (void *) brdp
->memaddr
;
4084 brdp
->memsize
= STAL_MEMSIZE
;
4085 brdp
->pagesize
= STAL_PAGESIZE
;
4086 brdp
->init
= stli_stalinit
;
4087 brdp
->enable
= NULL
;
4088 brdp
->reenable
= NULL
;
4089 brdp
->disable
= NULL
;
4090 brdp
->getmemptr
= stli_stalgetmemptr
;
4091 brdp
->intr
= stli_ecpintr
;
4092 brdp
->reset
= stli_stalreset
;
4093 name
= "serial(Stallion)";
4097 release_region(brdp
->iobase
, brdp
->iosize
);
4102 * The per-board operations structure is all set up, so now let's go
4103 * and get the board operational. Firstly initialize board configuration
4104 * registers. Set the memory mapping info so we can get at the boards
4109 brdp
->membase
= ioremap(brdp
->memaddr
, brdp
->memsize
);
4110 if (brdp
->membase
== (void *) NULL
)
4112 release_region(brdp
->iobase
, brdp
->iosize
);
4117 * Now that all specific code is set up, enable the shared memory and
4118 * look for the a signature area that will tell us exactly what board
4119 * this is, and how many ports.
4122 sigsp
= (cdkonbsig_t
*) EBRDGETMEMPTR(brdp
, CDK_SIGADDR
);
4123 memcpy(&sig
, sigsp
, sizeof(cdkonbsig_t
));
4127 printk("%s(%d): sig-> magic=%x:%x:%x:%x romver=%x amask=%x:%x:%x\n",
4128 __FILE__
, __LINE__
, sig
.magic0
, sig
.magic1
, sig
.magic2
,
4129 sig
.magic3
, sig
.romver
, sig
.amask0
, sig
.amask1
, sig
.amask2
);
4132 if ((sig
.magic0
!= ONB_MAGIC0
) || (sig
.magic1
!= ONB_MAGIC1
) ||
4133 (sig
.magic2
!= ONB_MAGIC2
) || (sig
.magic3
!= ONB_MAGIC3
))
4135 release_region(brdp
->iobase
, brdp
->iosize
);
4140 * Scan through the signature alive mask and calculate how many ports
4141 * there are on this board.
4147 for (i
= 0; (i
< 16); i
++) {
4148 if (((sig
.amask0
<< i
) & 0x8000) == 0)
4153 brdp
->panels
[0] = brdp
->nrports
;
4156 brdp
->state
|= BST_FOUND
;
4160 /*****************************************************************************/
4163 * Start up a running board. This routine is only called after the
4164 * code has been down loaded to the board and is operational. It will
4165 * read in the memory map, and get the show on the road...
4168 static int stli_startbrd(stlibrd_t
*brdp
)
4170 volatile cdkhdr_t
*hdrp
;
4171 volatile cdkmem_t
*memp
;
4172 volatile cdkasy_t
*ap
;
4173 unsigned long flags
;
4175 int portnr
, nrdevs
, i
, rc
;
4178 printk(KERN_DEBUG
"stli_startbrd(brdp=%x)\n", (int) brdp
);
4186 hdrp
= (volatile cdkhdr_t
*) EBRDGETMEMPTR(brdp
, CDK_CDKADDR
);
4187 nrdevs
= hdrp
->nrdevs
;
4190 printk("%s(%d): CDK version %d.%d.%d --> "
4191 "nrdevs=%d memp=%x hostp=%x slavep=%x\n",
4192 __FILE__
, __LINE__
, hdrp
->ver_release
, hdrp
->ver_modification
,
4193 hdrp
->ver_fix
, nrdevs
, (int) hdrp
->memp
, (int) hdrp
->hostp
,
4194 (int) hdrp
->slavep
);
4197 if (nrdevs
< (brdp
->nrports
+ 1)) {
4198 printk(KERN_ERR
"STALLION: slave failed to allocate memory for "
4199 "all devices, devices=%d\n", nrdevs
);
4200 brdp
->nrports
= nrdevs
- 1;
4202 brdp
->nrdevs
= nrdevs
;
4203 brdp
->hostoffset
= hdrp
->hostp
- CDK_CDKADDR
;
4204 brdp
->slaveoffset
= hdrp
->slavep
- CDK_CDKADDR
;
4205 brdp
->bitsize
= (nrdevs
+ 7) / 8;
4206 memp
= (volatile cdkmem_t
*) hdrp
->memp
;
4207 if (((unsigned long) memp
) > brdp
->memsize
) {
4208 printk(KERN_ERR
"STALLION: corrupted shared memory region?\n");
4210 goto stli_donestartup
;
4212 memp
= (volatile cdkmem_t
*) EBRDGETMEMPTR(brdp
, (unsigned long) memp
);
4213 if (memp
->dtype
!= TYP_ASYNCTRL
) {
4214 printk(KERN_ERR
"STALLION: no slave control device found\n");
4215 goto stli_donestartup
;
4220 * Cycle through memory allocation of each port. We are guaranteed to
4221 * have all ports inside the first page of slave window, so no need to
4222 * change pages while reading memory map.
4224 for (i
= 1, portnr
= 0; (i
< nrdevs
); i
++, portnr
++, memp
++) {
4225 if (memp
->dtype
!= TYP_ASYNC
)
4227 portp
= brdp
->ports
[portnr
];
4228 if (portp
== (stliport_t
*) NULL
)
4231 portp
->addr
= memp
->offset
;
4232 portp
->reqbit
= (unsigned char) (0x1 << (i
* 8 / nrdevs
));
4233 portp
->portidx
= (unsigned char) (i
/ 8);
4234 portp
->portbit
= (unsigned char) (0x1 << (i
% 8));
4237 hdrp
->slavereq
= 0xff;
4240 * For each port setup a local copy of the RX and TX buffer offsets
4241 * and sizes. We do this separate from the above, because we need to
4242 * move the shared memory page...
4244 for (i
= 1, portnr
= 0; (i
< nrdevs
); i
++, portnr
++) {
4245 portp
= brdp
->ports
[portnr
];
4246 if (portp
== (stliport_t
*) NULL
)
4248 if (portp
->addr
== 0)
4250 ap
= (volatile cdkasy_t
*) EBRDGETMEMPTR(brdp
, portp
->addr
);
4251 if (ap
!= (volatile cdkasy_t
*) NULL
) {
4252 portp
->rxsize
= ap
->rxq
.size
;
4253 portp
->txsize
= ap
->txq
.size
;
4254 portp
->rxoffset
= ap
->rxq
.offset
;
4255 portp
->txoffset
= ap
->txq
.offset
;
4261 restore_flags(flags
);
4264 brdp
->state
|= BST_STARTED
;
4266 if (! stli_timeron
) {
4268 stli_timerlist
.expires
= STLI_TIMEOUT
;
4269 add_timer(&stli_timerlist
);
4275 /*****************************************************************************/
4278 * Probe and initialize the specified board.
4281 static int __init
stli_brdinit(stlibrd_t
*brdp
)
4284 printk(KERN_DEBUG
"stli_brdinit(brdp=%x)\n", (int) brdp
);
4287 stli_brds
[brdp
->brdnr
] = brdp
;
4289 switch (brdp
->brdtype
) {
4300 case BRD_ONBOARD2_32
:
4312 printk(KERN_ERR
"STALLION: %s board type not supported in "
4313 "this driver\n", stli_brdnames
[brdp
->brdtype
]);
4316 printk(KERN_ERR
"STALLION: board=%d is unknown board "
4317 "type=%d\n", brdp
->brdnr
, brdp
->brdtype
);
4321 if ((brdp
->state
& BST_FOUND
) == 0) {
4322 printk(KERN_ERR
"STALLION: %s board not found, board=%d "
4324 stli_brdnames
[brdp
->brdtype
], brdp
->brdnr
,
4325 brdp
->iobase
, (int) brdp
->memaddr
);
4329 stli_initports(brdp
);
4330 printk(KERN_INFO
"STALLION: %s found, board=%d io=%x mem=%x "
4331 "nrpanels=%d nrports=%d\n", stli_brdnames
[brdp
->brdtype
],
4332 brdp
->brdnr
, brdp
->iobase
, (int) brdp
->memaddr
,
4333 brdp
->nrpanels
, brdp
->nrports
);
4337 /*****************************************************************************/
4340 * Probe around trying to find where the EISA boards shared memory
4341 * might be. This is a bit if hack, but it is the best we can do.
4344 static int stli_eisamemprobe(stlibrd_t
*brdp
)
4346 cdkecpsig_t ecpsig
, *ecpsigp
;
4347 cdkonbsig_t onbsig
, *onbsigp
;
4351 printk(KERN_DEBUG
"stli_eisamemprobe(brdp=%x)\n", (int) brdp
);
4355 * First up we reset the board, to get it into a known state. There
4356 * is only 2 board types here we need to worry about. Don;t use the
4357 * standard board init routine here, it programs up the shared
4358 * memory address, and we don't know it yet...
4360 if (brdp
->brdtype
== BRD_ECPE
) {
4361 outb(0x1, (brdp
->iobase
+ ECP_EIBRDENAB
));
4362 outb(ECP_EISTOP
, (brdp
->iobase
+ ECP_EICONFR
));
4364 outb(ECP_EIDISABLE
, (brdp
->iobase
+ ECP_EICONFR
));
4366 stli_ecpeienable(brdp
);
4367 } else if (brdp
->brdtype
== BRD_ONBOARDE
) {
4368 outb(0x1, (brdp
->iobase
+ ONB_EIBRDENAB
));
4369 outb(ONB_EISTOP
, (brdp
->iobase
+ ONB_EICONFR
));
4371 outb(ONB_EIDISABLE
, (brdp
->iobase
+ ONB_EICONFR
));
4373 outb(0x1, brdp
->iobase
);
4375 stli_onbeenable(brdp
);
4381 brdp
->memsize
= ECP_MEMSIZE
;
4384 * Board shared memory is enabled, so now we have a poke around and
4385 * see if we can find it.
4387 for (i
= 0; (i
< stli_eisamempsize
); i
++) {
4388 brdp
->memaddr
= stli_eisamemprobeaddrs
[i
];
4389 brdp
->membase
= (void *) brdp
->memaddr
;
4390 brdp
->membase
= ioremap(brdp
->memaddr
, brdp
->memsize
);
4391 if (brdp
->membase
== (void *) NULL
)
4394 if (brdp
->brdtype
== BRD_ECPE
) {
4395 ecpsigp
= (cdkecpsig_t
*) stli_ecpeigetmemptr(brdp
,
4396 CDK_SIGADDR
, __LINE__
);
4397 memcpy(&ecpsig
, ecpsigp
, sizeof(cdkecpsig_t
));
4398 if (ecpsig
.magic
== ECP_MAGIC
)
4401 onbsigp
= (cdkonbsig_t
*) stli_onbegetmemptr(brdp
,
4402 CDK_SIGADDR
, __LINE__
);
4403 memcpy(&onbsig
, onbsigp
, sizeof(cdkonbsig_t
));
4404 if ((onbsig
.magic0
== ONB_MAGIC0
) &&
4405 (onbsig
.magic1
== ONB_MAGIC1
) &&
4406 (onbsig
.magic2
== ONB_MAGIC2
) &&
4407 (onbsig
.magic3
== ONB_MAGIC3
))
4411 iounmap(brdp
->membase
);
4417 * Regardless of whether we found the shared memory or not we must
4418 * disable the region. After that return success or failure.
4420 if (brdp
->brdtype
== BRD_ECPE
)
4421 stli_ecpeidisable(brdp
);
4423 stli_onbedisable(brdp
);
4427 brdp
->membase
= NULL
;
4428 printk(KERN_ERR
"STALLION: failed to probe shared memory "
4429 "region for %s in EISA slot=%d\n",
4430 stli_brdnames
[brdp
->brdtype
], (brdp
->iobase
>> 12));
4436 static int stli_getbrdnr(void)
4440 for (i
= 0; i
< STL_MAXBRDS
; i
++) {
4441 if (!stli_brds
[i
]) {
4442 if (i
>= stli_nrbrds
)
4443 stli_nrbrds
= i
+ 1;
4450 /*****************************************************************************/
4453 * Probe around and try to find any EISA boards in system. The biggest
4454 * problem here is finding out what memory address is associated with
4455 * an EISA board after it is found. The registers of the ECPE and
4456 * ONboardE are not readable - so we can't read them from there. We
4457 * don't have access to the EISA CMOS (or EISA BIOS) so we don't
4458 * actually have any way to find out the real value. The best we can
4459 * do is go probing around in the usual places hoping we can find it.
4462 static int stli_findeisabrds(void)
4465 unsigned int iobase
, eid
;
4469 printk(KERN_DEBUG
"stli_findeisabrds()\n");
4473 * Firstly check if this is an EISA system. Do this by probing for
4474 * the system board EISA ID. If this is not an EISA system then
4475 * don't bother going any further!
4478 if (inb(0xc80) == 0xff)
4482 * Looks like an EISA system, so go searching for EISA boards.
4484 for (iobase
= 0x1000; (iobase
<= 0xc000); iobase
+= 0x1000) {
4485 outb(0xff, (iobase
+ 0xc80));
4486 eid
= inb(iobase
+ 0xc80);
4487 eid
|= inb(iobase
+ 0xc81) << 8;
4488 if (eid
!= STL_EISAID
)
4492 * We have found a board. Need to check if this board was
4493 * statically configured already (just in case!).
4495 for (i
= 0; (i
< STL_MAXBRDS
); i
++) {
4496 brdp
= stli_brds
[i
];
4497 if (brdp
== (stlibrd_t
*) NULL
)
4499 if (brdp
->iobase
== iobase
)
4502 if (i
< STL_MAXBRDS
)
4506 * We have found a Stallion board and it is not configured already.
4507 * Allocate a board structure and initialize it.
4509 if ((brdp
= stli_allocbrd()) == (stlibrd_t
*) NULL
)
4511 if ((brdp
->brdnr
= stli_getbrdnr()) < 0)
4513 eid
= inb(iobase
+ 0xc82);
4514 if (eid
== ECP_EISAID
)
4515 brdp
->brdtype
= BRD_ECPE
;
4516 else if (eid
== ONB_EISAID
)
4517 brdp
->brdtype
= BRD_ONBOARDE
;
4519 brdp
->brdtype
= BRD_UNKNOWN
;
4520 brdp
->iobase
= iobase
;
4521 outb(0x1, (iobase
+ 0xc84));
4522 if (stli_eisamemprobe(brdp
))
4523 outb(0, (iobase
+ 0xc84));
4530 /*****************************************************************************/
4533 * Find the next available board number that is free.
4536 /*****************************************************************************/
4541 * We have a Stallion board. Allocate a board structure and
4542 * initialize it. Read its IO and MEMORY resources from PCI
4543 * configuration space.
4546 static int stli_initpcibrd(int brdtype
, struct pci_dev
*devp
)
4551 printk(KERN_DEBUG
"stli_initpcibrd(brdtype=%d,busnr=%x,devnr=%x)\n",
4552 brdtype
, dev
->bus
->number
, dev
->devfn
);
4555 if (pci_enable_device(devp
))
4557 if ((brdp
= stli_allocbrd()) == (stlibrd_t
*) NULL
)
4559 if ((brdp
->brdnr
= stli_getbrdnr()) < 0) {
4560 printk(KERN_INFO
"STALLION: too many boards found, "
4561 "maximum supported %d\n", STL_MAXBRDS
);
4564 brdp
->brdtype
= brdtype
;
4567 printk(KERN_DEBUG
"%s(%d): BAR[]=%lx,%lx,%lx,%lx\n", __FILE__
, __LINE__
,
4568 pci_resource_start(devp
, 0),
4569 pci_resource_start(devp
, 1),
4570 pci_resource_start(devp
, 2),
4571 pci_resource_start(devp
, 3));
4575 * We have all resources from the board, so lets setup the actual
4576 * board structure now.
4578 brdp
->iobase
= pci_resource_start(devp
, 3);
4579 brdp
->memaddr
= pci_resource_start(devp
, 2);
4585 /*****************************************************************************/
4588 * Find all Stallion PCI boards that might be installed. Initialize each
4589 * one as it is found.
4592 static int stli_findpcibrds(void)
4594 struct pci_dev
*dev
= NULL
;
4598 printk("stli_findpcibrds()\n");
4601 while ((dev
= pci_find_device(PCI_VENDOR_ID_STALLION
,
4602 PCI_DEVICE_ID_ECRA
, dev
))) {
4603 if ((rc
= stli_initpcibrd(BRD_ECPPCI
, dev
)))
4612 /*****************************************************************************/
4615 * Allocate a new board structure. Fill out the basic info in it.
4618 static stlibrd_t
*stli_allocbrd(void)
4622 brdp
= (stlibrd_t
*) stli_memalloc(sizeof(stlibrd_t
));
4623 if (brdp
== (stlibrd_t
*) NULL
) {
4624 printk(KERN_ERR
"STALLION: failed to allocate memory "
4625 "(size=%d)\n", sizeof(stlibrd_t
));
4626 return((stlibrd_t
*) NULL
);
4629 memset(brdp
, 0, sizeof(stlibrd_t
));
4630 brdp
->magic
= STLI_BOARDMAGIC
;
4634 /*****************************************************************************/
4637 * Scan through all the boards in the configuration and see what we
4641 static int stli_initbrds(void)
4643 stlibrd_t
*brdp
, *nxtbrdp
;
4648 printk(KERN_DEBUG
"stli_initbrds()\n");
4651 if (stli_nrbrds
> STL_MAXBRDS
) {
4652 printk(KERN_INFO
"STALLION: too many boards in configuration "
4653 "table, truncating to %d\n", STL_MAXBRDS
);
4654 stli_nrbrds
= STL_MAXBRDS
;
4658 * Firstly scan the list of static boards configured. Allocate
4659 * resources and initialize the boards as found. If this is a
4660 * module then let the module args override static configuration.
4662 for (i
= 0; (i
< stli_nrbrds
); i
++) {
4663 confp
= &stli_brdconf
[i
];
4665 stli_parsebrd(confp
, stli_brdsp
[i
]);
4667 if ((brdp
= stli_allocbrd()) == (stlibrd_t
*) NULL
)
4670 brdp
->brdtype
= confp
->brdtype
;
4671 brdp
->iobase
= confp
->ioaddr1
;
4672 brdp
->memaddr
= confp
->memaddr
;
4677 * Static configuration table done, so now use dynamic methods to
4678 * see if any more boards should be configured.
4684 stli_findeisabrds();
4690 * All found boards are initialized. Now for a little optimization, if
4691 * no boards are sharing the "shared memory" regions then we can just
4692 * leave them all enabled. This is in fact the usual case.
4695 if (stli_nrbrds
> 1) {
4696 for (i
= 0; (i
< stli_nrbrds
); i
++) {
4697 brdp
= stli_brds
[i
];
4698 if (brdp
== (stlibrd_t
*) NULL
)
4700 for (j
= i
+ 1; (j
< stli_nrbrds
); j
++) {
4701 nxtbrdp
= stli_brds
[j
];
4702 if (nxtbrdp
== (stlibrd_t
*) NULL
)
4704 if ((brdp
->membase
>= nxtbrdp
->membase
) &&
4705 (brdp
->membase
<= (nxtbrdp
->membase
+
4706 nxtbrdp
->memsize
- 1))) {
4714 if (stli_shared
== 0) {
4715 for (i
= 0; (i
< stli_nrbrds
); i
++) {
4716 brdp
= stli_brds
[i
];
4717 if (brdp
== (stlibrd_t
*) NULL
)
4719 if (brdp
->state
& BST_FOUND
) {
4721 brdp
->enable
= NULL
;
4722 brdp
->disable
= NULL
;
4730 /*****************************************************************************/
4733 * Code to handle an "staliomem" read operation. This device is the
4734 * contents of the board shared memory. It is used for down loading
4735 * the slave image (and debugging :-)
4738 static ssize_t
stli_memread(struct file
*fp
, char __user
*buf
, size_t count
, loff_t
*offp
)
4740 unsigned long flags
;
4746 printk(KERN_DEBUG
"stli_memread(fp=%x,buf=%x,count=%x,offp=%x)\n",
4747 (int) fp
, (int) buf
, count
, (int) offp
);
4750 brdnr
= iminor(fp
->f_dentry
->d_inode
);
4751 if (brdnr
>= stli_nrbrds
)
4753 brdp
= stli_brds
[brdnr
];
4754 if (brdp
== (stlibrd_t
*) NULL
)
4756 if (brdp
->state
== 0)
4758 if (fp
->f_pos
>= brdp
->memsize
)
4761 size
= MIN(count
, (brdp
->memsize
- fp
->f_pos
));
4767 memptr
= (void *) EBRDGETMEMPTR(brdp
, fp
->f_pos
);
4768 n
= MIN(size
, (brdp
->pagesize
- (((unsigned long) fp
->f_pos
) % brdp
->pagesize
)));
4769 if (copy_to_user(buf
, memptr
, n
)) {
4779 restore_flags(flags
);
4784 /*****************************************************************************/
4787 * Code to handle an "staliomem" write operation. This device is the
4788 * contents of the board shared memory. It is used for down loading
4789 * the slave image (and debugging :-)
4792 static ssize_t
stli_memwrite(struct file
*fp
, const char __user
*buf
, size_t count
, loff_t
*offp
)
4794 unsigned long flags
;
4801 printk(KERN_DEBUG
"stli_memwrite(fp=%x,buf=%x,count=%x,offp=%x)\n",
4802 (int) fp
, (int) buf
, count
, (int) offp
);
4805 brdnr
= iminor(fp
->f_dentry
->d_inode
);
4806 if (brdnr
>= stli_nrbrds
)
4808 brdp
= stli_brds
[brdnr
];
4809 if (brdp
== (stlibrd_t
*) NULL
)
4811 if (brdp
->state
== 0)
4813 if (fp
->f_pos
>= brdp
->memsize
)
4816 chbuf
= (char __user
*) buf
;
4817 size
= MIN(count
, (brdp
->memsize
- fp
->f_pos
));
4823 memptr
= (void *) EBRDGETMEMPTR(brdp
, fp
->f_pos
);
4824 n
= MIN(size
, (brdp
->pagesize
- (((unsigned long) fp
->f_pos
) % brdp
->pagesize
)));
4825 if (copy_from_user(memptr
, chbuf
, n
)) {
4835 restore_flags(flags
);
4840 /*****************************************************************************/
4843 * Return the board stats structure to user app.
4846 static int stli_getbrdstats(combrd_t __user
*bp
)
4851 if (copy_from_user(&stli_brdstats
, bp
, sizeof(combrd_t
)))
4853 if (stli_brdstats
.brd
>= STL_MAXBRDS
)
4855 brdp
= stli_brds
[stli_brdstats
.brd
];
4856 if (brdp
== (stlibrd_t
*) NULL
)
4859 memset(&stli_brdstats
, 0, sizeof(combrd_t
));
4860 stli_brdstats
.brd
= brdp
->brdnr
;
4861 stli_brdstats
.type
= brdp
->brdtype
;
4862 stli_brdstats
.hwid
= 0;
4863 stli_brdstats
.state
= brdp
->state
;
4864 stli_brdstats
.ioaddr
= brdp
->iobase
;
4865 stli_brdstats
.memaddr
= brdp
->memaddr
;
4866 stli_brdstats
.nrpanels
= brdp
->nrpanels
;
4867 stli_brdstats
.nrports
= brdp
->nrports
;
4868 for (i
= 0; (i
< brdp
->nrpanels
); i
++) {
4869 stli_brdstats
.panels
[i
].panel
= i
;
4870 stli_brdstats
.panels
[i
].hwid
= brdp
->panelids
[i
];
4871 stli_brdstats
.panels
[i
].nrports
= brdp
->panels
[i
];
4874 if (copy_to_user(bp
, &stli_brdstats
, sizeof(combrd_t
)))
4879 /*****************************************************************************/
4882 * Resolve the referenced port number into a port struct pointer.
4885 static stliport_t
*stli_getport(int brdnr
, int panelnr
, int portnr
)
4890 if ((brdnr
< 0) || (brdnr
>= STL_MAXBRDS
))
4891 return((stliport_t
*) NULL
);
4892 brdp
= stli_brds
[brdnr
];
4893 if (brdp
== (stlibrd_t
*) NULL
)
4894 return((stliport_t
*) NULL
);
4895 for (i
= 0; (i
< panelnr
); i
++)
4896 portnr
+= brdp
->panels
[i
];
4897 if ((portnr
< 0) || (portnr
>= brdp
->nrports
))
4898 return((stliport_t
*) NULL
);
4899 return(brdp
->ports
[portnr
]);
4902 /*****************************************************************************/
4905 * Return the port stats structure to user app. A NULL port struct
4906 * pointer passed in means that we need to find out from the app
4907 * what port to get stats for (used through board control device).
4910 static int stli_portcmdstats(stliport_t
*portp
)
4912 unsigned long flags
;
4916 memset(&stli_comstats
, 0, sizeof(comstats_t
));
4918 if (portp
== (stliport_t
*) NULL
)
4920 brdp
= stli_brds
[portp
->brdnr
];
4921 if (brdp
== (stlibrd_t
*) NULL
)
4924 if (brdp
->state
& BST_STARTED
) {
4925 if ((rc
= stli_cmdwait(brdp
, portp
, A_GETSTATS
,
4926 &stli_cdkstats
, sizeof(asystats_t
), 1)) < 0)
4929 memset(&stli_cdkstats
, 0, sizeof(asystats_t
));
4932 stli_comstats
.brd
= portp
->brdnr
;
4933 stli_comstats
.panel
= portp
->panelnr
;
4934 stli_comstats
.port
= portp
->portnr
;
4935 stli_comstats
.state
= portp
->state
;
4936 stli_comstats
.flags
= portp
->flags
;
4940 if (portp
->tty
!= (struct tty_struct
*) NULL
) {
4941 if (portp
->tty
->driver_data
== portp
) {
4942 stli_comstats
.ttystate
= portp
->tty
->flags
;
4943 stli_comstats
.rxbuffered
= portp
->tty
->flip
.count
;
4944 if (portp
->tty
->termios
!= (struct termios
*) NULL
) {
4945 stli_comstats
.cflags
= portp
->tty
->termios
->c_cflag
;
4946 stli_comstats
.iflags
= portp
->tty
->termios
->c_iflag
;
4947 stli_comstats
.oflags
= portp
->tty
->termios
->c_oflag
;
4948 stli_comstats
.lflags
= portp
->tty
->termios
->c_lflag
;
4952 restore_flags(flags
);
4954 stli_comstats
.txtotal
= stli_cdkstats
.txchars
;
4955 stli_comstats
.rxtotal
= stli_cdkstats
.rxchars
+ stli_cdkstats
.ringover
;
4956 stli_comstats
.txbuffered
= stli_cdkstats
.txringq
;
4957 stli_comstats
.rxbuffered
+= stli_cdkstats
.rxringq
;
4958 stli_comstats
.rxoverrun
= stli_cdkstats
.overruns
;
4959 stli_comstats
.rxparity
= stli_cdkstats
.parity
;
4960 stli_comstats
.rxframing
= stli_cdkstats
.framing
;
4961 stli_comstats
.rxlost
= stli_cdkstats
.ringover
;
4962 stli_comstats
.rxbreaks
= stli_cdkstats
.rxbreaks
;
4963 stli_comstats
.txbreaks
= stli_cdkstats
.txbreaks
;
4964 stli_comstats
.txxon
= stli_cdkstats
.txstart
;
4965 stli_comstats
.txxoff
= stli_cdkstats
.txstop
;
4966 stli_comstats
.rxxon
= stli_cdkstats
.rxstart
;
4967 stli_comstats
.rxxoff
= stli_cdkstats
.rxstop
;
4968 stli_comstats
.rxrtsoff
= stli_cdkstats
.rtscnt
/ 2;
4969 stli_comstats
.rxrtson
= stli_cdkstats
.rtscnt
- stli_comstats
.rxrtsoff
;
4970 stli_comstats
.modem
= stli_cdkstats
.dcdcnt
;
4971 stli_comstats
.hwid
= stli_cdkstats
.hwid
;
4972 stli_comstats
.signals
= stli_mktiocm(stli_cdkstats
.signals
);
4977 /*****************************************************************************/
4980 * Return the port stats structure to user app. A NULL port struct
4981 * pointer passed in means that we need to find out from the app
4982 * what port to get stats for (used through board control device).
4985 static int stli_getportstats(stliport_t
*portp
, comstats_t __user
*cp
)
4991 if (copy_from_user(&stli_comstats
, cp
, sizeof(comstats_t
)))
4993 portp
= stli_getport(stli_comstats
.brd
, stli_comstats
.panel
,
4994 stli_comstats
.port
);
4999 brdp
= stli_brds
[portp
->brdnr
];
5003 if ((rc
= stli_portcmdstats(portp
)) < 0)
5006 return copy_to_user(cp
, &stli_comstats
, sizeof(comstats_t
)) ?
5010 /*****************************************************************************/
5013 * Clear the port stats structure. We also return it zeroed out...
5016 static int stli_clrportstats(stliport_t
*portp
, comstats_t __user
*cp
)
5022 if (copy_from_user(&stli_comstats
, cp
, sizeof(comstats_t
)))
5024 portp
= stli_getport(stli_comstats
.brd
, stli_comstats
.panel
,
5025 stli_comstats
.port
);
5030 brdp
= stli_brds
[portp
->brdnr
];
5034 if (brdp
->state
& BST_STARTED
) {
5035 if ((rc
= stli_cmdwait(brdp
, portp
, A_CLEARSTATS
, NULL
, 0, 0)) < 0)
5039 memset(&stli_comstats
, 0, sizeof(comstats_t
));
5040 stli_comstats
.brd
= portp
->brdnr
;
5041 stli_comstats
.panel
= portp
->panelnr
;
5042 stli_comstats
.port
= portp
->portnr
;
5044 if (copy_to_user(cp
, &stli_comstats
, sizeof(comstats_t
)))
5049 /*****************************************************************************/
5052 * Return the entire driver ports structure to a user app.
5055 static int stli_getportstruct(stliport_t __user
*arg
)
5059 if (copy_from_user(&stli_dummyport
, arg
, sizeof(stliport_t
)))
5061 portp
= stli_getport(stli_dummyport
.brdnr
, stli_dummyport
.panelnr
,
5062 stli_dummyport
.portnr
);
5065 if (copy_to_user(arg
, portp
, sizeof(stliport_t
)))
5070 /*****************************************************************************/
5073 * Return the entire driver board structure to a user app.
5076 static int stli_getbrdstruct(stlibrd_t __user
*arg
)
5080 if (copy_from_user(&stli_dummybrd
, arg
, sizeof(stlibrd_t
)))
5082 if ((stli_dummybrd
.brdnr
< 0) || (stli_dummybrd
.brdnr
>= STL_MAXBRDS
))
5084 brdp
= stli_brds
[stli_dummybrd
.brdnr
];
5087 if (copy_to_user(arg
, brdp
, sizeof(stlibrd_t
)))
5092 /*****************************************************************************/
5095 * The "staliomem" device is also required to do some special operations on
5096 * the board. We need to be able to send an interrupt to the board,
5097 * reset it, and start/stop it.
5100 static int stli_memioctl(struct inode
*ip
, struct file
*fp
, unsigned int cmd
, unsigned long arg
)
5103 int brdnr
, rc
, done
;
5104 void __user
*argp
= (void __user
*)arg
;
5107 printk(KERN_DEBUG
"stli_memioctl(ip=%x,fp=%x,cmd=%x,arg=%x)\n",
5108 (int) ip
, (int) fp
, cmd
, (int) arg
);
5112 * First up handle the board independent ioctls.
5118 case COM_GETPORTSTATS
:
5119 rc
= stli_getportstats(NULL
, argp
);
5122 case COM_CLRPORTSTATS
:
5123 rc
= stli_clrportstats(NULL
, argp
);
5126 case COM_GETBRDSTATS
:
5127 rc
= stli_getbrdstats(argp
);
5131 rc
= stli_getportstruct(argp
);
5135 rc
= stli_getbrdstruct(argp
);
5144 * Now handle the board specific ioctls. These all depend on the
5145 * minor number of the device they were called from.
5148 if (brdnr
>= STL_MAXBRDS
)
5150 brdp
= stli_brds
[brdnr
];
5153 if (brdp
->state
== 0)
5161 rc
= stli_startbrd(brdp
);
5164 brdp
->state
&= ~BST_STARTED
;
5167 brdp
->state
&= ~BST_STARTED
;
5169 if (stli_shared
== 0) {
5170 if (brdp
->reenable
!= NULL
)
5171 (* brdp
->reenable
)(brdp
);
5182 static struct tty_operations stli_ops
= {
5184 .close
= stli_close
,
5185 .write
= stli_write
,
5186 .put_char
= stli_putchar
,
5187 .flush_chars
= stli_flushchars
,
5188 .write_room
= stli_writeroom
,
5189 .chars_in_buffer
= stli_charsinbuffer
,
5190 .ioctl
= stli_ioctl
,
5191 .set_termios
= stli_settermios
,
5192 .throttle
= stli_throttle
,
5193 .unthrottle
= stli_unthrottle
,
5195 .start
= stli_start
,
5196 .hangup
= stli_hangup
,
5197 .flush_buffer
= stli_flushbuffer
,
5198 .break_ctl
= stli_breakctl
,
5199 .wait_until_sent
= stli_waituntilsent
,
5200 .send_xchar
= stli_sendxchar
,
5201 .read_proc
= stli_readproc
,
5202 .tiocmget
= stli_tiocmget
,
5203 .tiocmset
= stli_tiocmset
,
5206 /*****************************************************************************/
5208 int __init
stli_init(void)
5211 printk(KERN_INFO
"%s: version %s\n", stli_drvtitle
, stli_drvversion
);
5215 stli_serial
= alloc_tty_driver(STL_MAXBRDS
* STL_MAXPORTS
);
5220 * Allocate a temporary write buffer.
5222 stli_tmpwritebuf
= (char *) stli_memalloc(STLI_TXBUFSIZE
);
5223 if (stli_tmpwritebuf
== (char *) NULL
)
5224 printk(KERN_ERR
"STALLION: failed to allocate memory "
5225 "(size=%d)\n", STLI_TXBUFSIZE
);
5226 stli_txcookbuf
= stli_memalloc(STLI_TXBUFSIZE
);
5227 if (stli_txcookbuf
== (char *) NULL
)
5228 printk(KERN_ERR
"STALLION: failed to allocate memory "
5229 "(size=%d)\n", STLI_TXBUFSIZE
);
5232 * Set up a character driver for the shared memory region. We need this
5233 * to down load the slave code image. Also it is a useful debugging tool.
5235 if (register_chrdev(STL_SIOMEMMAJOR
, "staliomem", &stli_fsiomem
))
5236 printk(KERN_ERR
"STALLION: failed to register serial memory "
5239 devfs_mk_dir("staliomem");
5240 istallion_class
= class_create(THIS_MODULE
, "staliomem");
5241 for (i
= 0; i
< 4; i
++) {
5242 devfs_mk_cdev(MKDEV(STL_SIOMEMMAJOR
, i
),
5243 S_IFCHR
| S_IRUSR
| S_IWUSR
,
5245 class_device_create(istallion_class
, NULL
,
5246 MKDEV(STL_SIOMEMMAJOR
, i
),
5247 NULL
, "staliomem%d", i
);
5251 * Set up the tty driver structure and register us as a driver.
5253 stli_serial
->owner
= THIS_MODULE
;
5254 stli_serial
->driver_name
= stli_drvname
;
5255 stli_serial
->name
= stli_serialname
;
5256 stli_serial
->major
= STL_SERIALMAJOR
;
5257 stli_serial
->minor_start
= 0;
5258 stli_serial
->type
= TTY_DRIVER_TYPE_SERIAL
;
5259 stli_serial
->subtype
= SERIAL_TYPE_NORMAL
;
5260 stli_serial
->init_termios
= stli_deftermios
;
5261 stli_serial
->flags
= TTY_DRIVER_REAL_RAW
;
5262 tty_set_operations(stli_serial
, &stli_ops
);
5264 if (tty_register_driver(stli_serial
)) {
5265 put_tty_driver(stli_serial
);
5266 printk(KERN_ERR
"STALLION: failed to register serial driver\n");
5272 /*****************************************************************************/