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>
46 #include <asm/uaccess.h>
49 #include <linux/pci.h>
52 /*****************************************************************************/
55 * Define different board types. Not all of the following board types
56 * are supported by this driver. But I will use the standard "assigned"
57 * board numbers. Currently supported boards are abbreviated as:
58 * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and
62 #define BRD_STALLION 1
64 #define BRD_ONBOARD2 3
67 #define BRD_BRUMBY16 6
68 #define BRD_ONBOARDE 7
69 #define BRD_ONBOARD32 9
70 #define BRD_ONBOARD2_32 10
71 #define BRD_ONBOARDRS 11
79 #define BRD_ECH64PCI 27
80 #define BRD_EASYIOPCI 28
83 #define BRD_BRUMBY BRD_BRUMBY4
86 * Define a configuration structure to hold the board configuration.
87 * Need to set this up in the code (for now) with the boards that are
88 * to be configured into the system. This is what needs to be modified
89 * when adding/removing/modifying boards. Each line entry in the
90 * stli_brdconf[] array is a board. Each line contains io/irq/memory
91 * ranges for that board (as well as what type of board it is).
93 * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },
94 * This line will configure an EasyConnection 8/64 at io address 2a0,
95 * and shared memory address of cc000. Multiple EasyConnection 8/64
96 * boards can share the same shared memory address space. No interrupt
97 * is required for this board type.
99 * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 },
100 * This line will configure an EasyConnection 8/64 EISA in slot 5 and
101 * shared memory address of 0x80000000 (2 GByte). Multiple
102 * EasyConnection 8/64 EISA boards can share the same shared memory
103 * address space. No interrupt is required for this board type.
105 * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 },
106 * This line will configure an ONboard (ISA type) at io address 240,
107 * and shared memory address of d0000. Multiple ONboards can share
108 * the same shared memory address space. No interrupt required.
110 * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 },
111 * This line will configure a Brumby board (any number of ports!) at
112 * io address 360 and shared memory address of c8000. All Brumby boards
113 * configured into a system must have their own separate io and memory
114 * addresses. No interrupt is required.
116 * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 },
117 * This line will configure an original Stallion board at io address 330
118 * and shared memory address d0000 (this would only be valid for a "V4.0"
119 * or Rev.O Stallion board). All Stallion boards configured into the
120 * system must have their own separate io and memory addresses. No
121 * interrupt is required.
128 unsigned long memaddr;
133 static stlconf_t stli_brdconf[] = {
134 /*{ BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },*/
137 static int stli_nrbrds = sizeof(stli_brdconf) / sizeof(stlconf_t);
140 * There is some experimental EISA board detection code in this driver.
141 * By default it is disabled, but for those that want to try it out,
142 * then set the define below to be 1.
144 #define STLI_EISAPROBE 0
146 /*****************************************************************************/
149 * Define some important driver characteristics. Device major numbers
150 * allocated as per Linux Device Registry.
152 #ifndef STL_SIOMEMMAJOR
153 #define STL_SIOMEMMAJOR 28
155 #ifndef STL_SERIALMAJOR
156 #define STL_SERIALMAJOR 24
158 #ifndef STL_CALLOUTMAJOR
159 #define STL_CALLOUTMAJOR 25
162 /*****************************************************************************/
165 * Define our local driver identity first. Set up stuff to deal with
166 * all the local structures required by a serial tty driver.
168 static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver";
169 static char *stli_drvname = "istallion";
170 static char *stli_drvversion = "5.6.0";
171 static char *stli_serialname = "ttyE";
173 static struct tty_driver *stli_serial;
176 * We will need to allocate a temporary write buffer for chars that
177 * come direct from user space. The problem is that a copy from user
178 * space might cause a page fault (typically on a system that is
179 * swapping!). All ports will share one buffer - since if the system
180 * is already swapping a shared buffer won't make things any worse.
182 static char *stli_tmpwritebuf;
183 static DECLARE_MUTEX(stli_tmpwritesem);
185 #define STLI_TXBUFSIZE 4096
188 * Use a fast local buffer for cooked characters. Typically a whole
189 * bunch of cooked characters come in for a port, 1 at a time. So we
190 * save those up into a local buffer, then write out the whole lot
191 * with a large memcpy. Just use 1 buffer for all ports, since its
192 * use it is only need for short periods of time by each port.
194 static char *stli_txcookbuf;
195 static int stli_txcooksize;
196 static int stli_txcookrealsize;
197 static struct tty_struct *stli_txcooktty;
200 * Define a local default termios struct. All ports will be created
201 * with this termios initially. Basically all it defines is a raw port
202 * at 9600 baud, 8 data bits, no parity, 1 stop bit.
204 static struct termios stli_deftermios = {
205 .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL),
210 * Define global stats structures. Not used often, and can be
211 * re-used for each stats call.
213 static comstats_t stli_comstats;
214 static combrd_t stli_brdstats;
215 static asystats_t stli_cdkstats;
216 static stlibrd_t stli_dummybrd;
217 static stliport_t stli_dummyport;
219 /*****************************************************************************/
221 static stlibrd_t *stli_brds[STL_MAXBRDS];
223 static int stli_shared;
226 * Per board state flags. Used with the state field of the board struct.
227 * Not really much here... All we need to do is keep track of whether
228 * the board has been detected, and whether it is actually running a slave
231 #define BST_FOUND 0x1
232 #define BST_STARTED 0x2
235 * Define the set of port state flags. These are marked for internal
236 * state purposes only, usually to do with the state of communications
237 * with the slave. Most of them need to be updated atomically, so always
238 * use the bit setting operations (unless protected by cli/sti).
240 #define ST_INITIALIZING 1
246 #define ST_DOFLUSHRX 7
247 #define ST_DOFLUSHTX 8
250 #define ST_GETSIGS 11
253 * Define an array of board names as printable strings. Handy for
254 * referencing boards when printing trace and stuff.
256 static char *stli_brdnames[] = {
289 /*****************************************************************************/
293 * Define some string labels for arguments passed from the module
294 * load line. These allow for easy board definitions, and easy
295 * modification of the io, memory and irq resoucres.
298 static char *board0[8];
299 static char *board1[8];
300 static char *board2[8];
301 static char *board3[8];
303 static char **stli_brdsp[] = {
311 * Define a set of common board names, and types. This is used to
312 * parse any module arguments.
315 typedef struct stlibrdtype {
320 static stlibrdtype_t stli_brdstr[] = {
321 { "stallion", BRD_STALLION },
322 { "1", BRD_STALLION },
323 { "brumby", BRD_BRUMBY },
324 { "brumby4", BRD_BRUMBY },
325 { "brumby/4", BRD_BRUMBY },
326 { "brumby-4", BRD_BRUMBY },
327 { "brumby8", BRD_BRUMBY },
328 { "brumby/8", BRD_BRUMBY },
329 { "brumby-8", BRD_BRUMBY },
330 { "brumby16", BRD_BRUMBY },
331 { "brumby/16", BRD_BRUMBY },
332 { "brumby-16", BRD_BRUMBY },
334 { "onboard2", BRD_ONBOARD2 },
335 { "onboard-2", BRD_ONBOARD2 },
336 { "onboard/2", BRD_ONBOARD2 },
337 { "onboard-mc", BRD_ONBOARD2 },
338 { "onboard/mc", BRD_ONBOARD2 },
339 { "onboard-mca", BRD_ONBOARD2 },
340 { "onboard/mca", BRD_ONBOARD2 },
341 { "3", BRD_ONBOARD2 },
342 { "onboard", BRD_ONBOARD },
343 { "onboardat", BRD_ONBOARD },
344 { "4", BRD_ONBOARD },
345 { "onboarde", BRD_ONBOARDE },
346 { "onboard-e", BRD_ONBOARDE },
347 { "onboard/e", BRD_ONBOARDE },
348 { "onboard-ei", BRD_ONBOARDE },
349 { "onboard/ei", BRD_ONBOARDE },
350 { "7", BRD_ONBOARDE },
352 { "ecpat", BRD_ECP },
353 { "ec8/64", BRD_ECP },
354 { "ec8/64-at", BRD_ECP },
355 { "ec8/64-isa", BRD_ECP },
357 { "ecpe", BRD_ECPE },
358 { "ecpei", BRD_ECPE },
359 { "ec8/64-e", BRD_ECPE },
360 { "ec8/64-ei", BRD_ECPE },
362 { "ecpmc", BRD_ECPMC },
363 { "ec8/64-mc", BRD_ECPMC },
364 { "ec8/64-mca", BRD_ECPMC },
366 { "ecppci", BRD_ECPPCI },
367 { "ec/ra", BRD_ECPPCI },
368 { "ec/ra-pc", BRD_ECPPCI },
369 { "ec/ra-pci", BRD_ECPPCI },
370 { "29", BRD_ECPPCI },
374 * Define the module agruments.
376 MODULE_AUTHOR("Greg Ungerer");
377 MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver");
378 MODULE_LICENSE("GPL");
381 MODULE_PARM(board0, "1-3s");
382 MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]");
383 MODULE_PARM(board1, "1-3s");
384 MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]");
385 MODULE_PARM(board2, "1-3s");
386 MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]");
387 MODULE_PARM(board3, "1-3s");
388 MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]");
393 * Set up a default memory address table for EISA board probing.
394 * The default addresses are all bellow 1Mbyte, which has to be the
395 * case anyway. They should be safe, since we only read values from
396 * them, and interrupts are disabled while we do it. If the higher
397 * memory support is compiled in then we also try probing around
398 * the 1Gb, 2Gb and 3Gb areas as well...
400 static unsigned long stli_eisamemprobeaddrs[] = {
401 0xc0000, 0xd0000, 0xe0000, 0xf0000,
402 0x80000000, 0x80010000, 0x80020000, 0x80030000,
403 0x40000000, 0x40010000, 0x40020000, 0x40030000,
404 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000,
405 0xff000000, 0xff010000, 0xff020000, 0xff030000,
408 static int stli_eisamempsize = sizeof(stli_eisamemprobeaddrs) / sizeof(unsigned long);
409 int stli_eisaprobe = STLI_EISAPROBE;
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, int from_user, 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 void stli_delay(int len);
695 static int stli_setport(stliport_t *portp);
696 static int stli_cmdwait(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback);
697 static void stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback);
698 static void stli_dodelaycmd(stliport_t *portp, volatile cdkctrl_t *cp);
699 static void stli_mkasyport(stliport_t *portp, asyport_t *pp, struct termios *tiosp);
700 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts);
701 static long stli_mktiocm(unsigned long sigvalue);
702 static void stli_read(stlibrd_t *brdp, stliport_t *portp);
703 static int stli_getserial(stliport_t *portp, struct serial_struct __user *sp);
704 static int stli_setserial(stliport_t *portp, struct serial_struct __user *sp);
705 static int stli_getbrdstats(combrd_t __user *bp);
706 static int stli_getportstats(stliport_t *portp, comstats_t __user *cp);
707 static int stli_portcmdstats(stliport_t *portp);
708 static int stli_clrportstats(stliport_t *portp, comstats_t __user *cp);
709 static int stli_getportstruct(stliport_t __user *arg);
710 static int stli_getbrdstruct(stlibrd_t __user *arg);
711 static void *stli_memalloc(int len);
712 static stlibrd_t *stli_allocbrd(void);
714 static void stli_ecpinit(stlibrd_t *brdp);
715 static void stli_ecpenable(stlibrd_t *brdp);
716 static void stli_ecpdisable(stlibrd_t *brdp);
717 static char *stli_ecpgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
718 static void stli_ecpreset(stlibrd_t *brdp);
719 static void stli_ecpintr(stlibrd_t *brdp);
720 static void stli_ecpeiinit(stlibrd_t *brdp);
721 static void stli_ecpeienable(stlibrd_t *brdp);
722 static void stli_ecpeidisable(stlibrd_t *brdp);
723 static char *stli_ecpeigetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
724 static void stli_ecpeireset(stlibrd_t *brdp);
725 static void stli_ecpmcenable(stlibrd_t *brdp);
726 static void stli_ecpmcdisable(stlibrd_t *brdp);
727 static char *stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
728 static void stli_ecpmcreset(stlibrd_t *brdp);
729 static void stli_ecppciinit(stlibrd_t *brdp);
730 static char *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
731 static void stli_ecppcireset(stlibrd_t *brdp);
733 static void stli_onbinit(stlibrd_t *brdp);
734 static void stli_onbenable(stlibrd_t *brdp);
735 static void stli_onbdisable(stlibrd_t *brdp);
736 static char *stli_onbgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
737 static void stli_onbreset(stlibrd_t *brdp);
738 static void stli_onbeinit(stlibrd_t *brdp);
739 static void stli_onbeenable(stlibrd_t *brdp);
740 static void stli_onbedisable(stlibrd_t *brdp);
741 static char *stli_onbegetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
742 static void stli_onbereset(stlibrd_t *brdp);
743 static void stli_bbyinit(stlibrd_t *brdp);
744 static char *stli_bbygetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
745 static void stli_bbyreset(stlibrd_t *brdp);
746 static void stli_stalinit(stlibrd_t *brdp);
747 static char *stli_stalgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
748 static void stli_stalreset(stlibrd_t *brdp);
750 static stliport_t *stli_getport(int brdnr, int panelnr, int portnr);
752 static int stli_initecp(stlibrd_t *brdp);
753 static int stli_initonb(stlibrd_t *brdp);
754 static int stli_eisamemprobe(stlibrd_t *brdp);
755 static int stli_initports(stlibrd_t *brdp);
758 static int stli_initpcibrd(int brdtype, struct pci_dev *devp);
761 /*****************************************************************************/
764 * Define the driver info for a user level shared memory device. This
765 * device will work sort of like the /dev/kmem device - except that it
766 * will give access to the shared memory on the Stallion intelligent
767 * board. This is also a very useful debugging tool.
769 static struct file_operations stli_fsiomem = {
770 .owner = THIS_MODULE,
771 .read = stli_memread,
772 .write = stli_memwrite,
773 .ioctl = stli_memioctl,
776 /*****************************************************************************/
779 * Define a timer_list entry for our poll routine. The slave board
780 * is polled every so often to see if anything needs doing. This is
781 * much cheaper on host cpu than using interrupts. It turns out to
782 * not increase character latency by much either...
784 static struct timer_list stli_timerlist = TIMER_INITIALIZER(stli_poll, 0, 0);
786 static int stli_timeron;
789 * Define the calculation for the timeout routine.
791 #define STLI_TIMEOUT (jiffies + 1)
793 /*****************************************************************************/
795 static struct class_simple *istallion_class;
800 * Loadable module initialization stuff.
803 static int __init istallion_module_init(void)
808 printk("init_module()\n");
814 restore_flags(flags);
819 /*****************************************************************************/
821 static void __exit istallion_module_exit(void)
829 printk("cleanup_module()\n");
832 printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle,
839 * Free up all allocated resources used by the ports. This includes
840 * memory and interrupts.
844 del_timer(&stli_timerlist);
847 i = tty_unregister_driver(stli_serial);
849 printk("STALLION: failed to un-register tty driver, "
851 restore_flags(flags);
854 put_tty_driver(stli_serial);
855 for (i = 0; i < 4; i++) {
856 devfs_remove("staliomem/%d", i);
857 class_simple_device_remove(MKDEV(STL_SIOMEMMAJOR, i));
859 devfs_remove("staliomem");
860 class_simple_destroy(istallion_class);
861 if ((i = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem")))
862 printk("STALLION: failed to un-register serial memory device, "
864 if (stli_tmpwritebuf != (char *) NULL)
865 kfree(stli_tmpwritebuf);
866 if (stli_txcookbuf != (char *) NULL)
867 kfree(stli_txcookbuf);
869 for (i = 0; (i < stli_nrbrds); i++) {
870 if ((brdp = stli_brds[i]) == (stlibrd_t *) NULL)
872 for (j = 0; (j < STL_MAXPORTS); j++) {
873 portp = brdp->ports[j];
874 if (portp != (stliport_t *) NULL) {
875 if (portp->tty != (struct tty_struct *) NULL)
876 tty_hangup(portp->tty);
881 iounmap(brdp->membase);
882 if (brdp->iosize > 0)
883 release_region(brdp->iobase, brdp->iosize);
885 stli_brds[i] = (stlibrd_t *) NULL;
888 restore_flags(flags);
891 module_init(istallion_module_init);
892 module_exit(istallion_module_exit);
894 /*****************************************************************************/
897 * Check for any arguments passed in on the module load command line.
900 static void stli_argbrds(void)
907 printk("stli_argbrds()\n");
910 nrargs = sizeof(stli_brdsp) / sizeof(char **);
912 for (i = stli_nrbrds; (i < nrargs); i++) {
913 memset(&conf, 0, sizeof(conf));
914 if (stli_parsebrd(&conf, stli_brdsp[i]) == 0)
916 if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL)
920 brdp->brdtype = conf.brdtype;
921 brdp->iobase = conf.ioaddr1;
922 brdp->memaddr = conf.memaddr;
927 /*****************************************************************************/
930 * Convert an ascii string number into an unsigned long.
933 static unsigned long stli_atol(char *str)
941 if ((*sp == '0') && (*(sp+1) == 'x')) {
944 } else if (*sp == '0') {
951 for (; (*sp != 0); sp++) {
952 c = (*sp > '9') ? (TOLOWER(*sp) - 'a' + 10) : (*sp - '0');
953 if ((c < 0) || (c >= base)) {
954 printk("STALLION: invalid argument %s\n", str);
958 val = (val * base) + c;
963 /*****************************************************************************/
966 * Parse the supplied argument string, into the board conf struct.
969 static int stli_parsebrd(stlconf_t *confp, char **argp)
975 printk("stli_parsebrd(confp=%x,argp=%x)\n", (int) confp, (int) argp);
978 if ((argp[0] == (char *) NULL) || (*argp[0] == 0))
981 for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++)
984 nrbrdnames = sizeof(stli_brdstr) / sizeof(stlibrdtype_t);
985 for (i = 0; (i < nrbrdnames); i++) {
986 if (strcmp(stli_brdstr[i].name, argp[0]) == 0)
989 if (i >= nrbrdnames) {
990 printk("STALLION: unknown board name, %s?\n", argp[0]);
994 confp->brdtype = stli_brdstr[i].type;
995 if ((argp[1] != (char *) NULL) && (*argp[1] != 0))
996 confp->ioaddr1 = stli_atol(argp[1]);
997 if ((argp[2] != (char *) NULL) && (*argp[2] != 0))
998 confp->memaddr = stli_atol(argp[2]);
1004 /*****************************************************************************/
1007 * Local driver kernel malloc routine.
1010 static void *stli_memalloc(int len)
1012 return((void *) kmalloc(len, GFP_KERNEL));
1015 /*****************************************************************************/
1017 static int stli_open(struct tty_struct *tty, struct file *filp)
1021 unsigned int minordev;
1022 int brdnr, portnr, rc;
1025 printk("stli_open(tty=%x,filp=%x): device=%s\n", (int) tty,
1026 (int) filp, tty->name);
1029 minordev = tty->index;
1030 brdnr = MINOR2BRD(minordev);
1031 if (brdnr >= stli_nrbrds)
1033 brdp = stli_brds[brdnr];
1034 if (brdp == (stlibrd_t *) NULL)
1036 if ((brdp->state & BST_STARTED) == 0)
1038 portnr = MINOR2PORT(minordev);
1039 if ((portnr < 0) || (portnr > brdp->nrports))
1042 portp = brdp->ports[portnr];
1043 if (portp == (stliport_t *) NULL)
1045 if (portp->devnr < 1)
1050 * Check if this port is in the middle of closing. If so then wait
1051 * until it is closed then return error status based on flag settings.
1052 * The sleep here does not need interrupt protection since the wakeup
1053 * for it is done with the same context.
1055 if (portp->flags & ASYNC_CLOSING) {
1056 interruptible_sleep_on(&portp->close_wait);
1057 if (portp->flags & ASYNC_HUP_NOTIFY)
1059 return(-ERESTARTSYS);
1063 * On the first open of the device setup the port hardware, and
1064 * initialize the per port data structure. Since initializing the port
1065 * requires several commands to the board we will need to wait for any
1066 * other open that is already initializing the port.
1069 tty->driver_data = portp;
1072 while (test_bit(ST_INITIALIZING, &portp->state)) {
1073 if (signal_pending(current))
1074 return(-ERESTARTSYS);
1075 interruptible_sleep_on(&portp->raw_wait);
1078 if ((portp->flags & ASYNC_INITIALIZED) == 0) {
1079 set_bit(ST_INITIALIZING, &portp->state);
1080 if ((rc = stli_initopen(brdp, portp)) >= 0) {
1081 portp->flags |= ASYNC_INITIALIZED;
1082 clear_bit(TTY_IO_ERROR, &tty->flags);
1084 clear_bit(ST_INITIALIZING, &portp->state);
1085 wake_up_interruptible(&portp->raw_wait);
1091 * Check if this port is in the middle of closing. If so then wait
1092 * until it is closed then return error status, based on flag settings.
1093 * The sleep here does not need interrupt protection since the wakeup
1094 * for it is done with the same context.
1096 if (portp->flags & ASYNC_CLOSING) {
1097 interruptible_sleep_on(&portp->close_wait);
1098 if (portp->flags & ASYNC_HUP_NOTIFY)
1100 return(-ERESTARTSYS);
1104 * Based on type of open being done check if it can overlap with any
1105 * previous opens still in effect. If we are a normal serial device
1106 * then also we might have to wait for carrier.
1108 if (!(filp->f_flags & O_NONBLOCK)) {
1109 if ((rc = stli_waitcarrier(brdp, portp, filp)) != 0)
1112 portp->flags |= ASYNC_NORMAL_ACTIVE;
1116 /*****************************************************************************/
1118 static void stli_close(struct tty_struct *tty, struct file *filp)
1122 unsigned long flags;
1125 printk("stli_close(tty=%x,filp=%x)\n", (int) tty, (int) filp);
1128 portp = tty->driver_data;
1129 if (portp == (stliport_t *) NULL)
1134 if (tty_hung_up_p(filp)) {
1135 restore_flags(flags);
1138 if ((tty->count == 1) && (portp->refcount != 1))
1139 portp->refcount = 1;
1140 if (portp->refcount-- > 1) {
1141 restore_flags(flags);
1145 portp->flags |= ASYNC_CLOSING;
1148 * May want to wait for data to drain before closing. The BUSY flag
1149 * keeps track of whether we are still transmitting or not. It is
1150 * updated by messages from the slave - indicating when all chars
1151 * really have drained.
1153 if (tty == stli_txcooktty)
1154 stli_flushchars(tty);
1156 if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE)
1157 tty_wait_until_sent(tty, portp->closing_wait);
1159 portp->flags &= ~ASYNC_INITIALIZED;
1160 brdp = stli_brds[portp->brdnr];
1161 stli_rawclose(brdp, portp, 0, 0);
1162 if (tty->termios->c_cflag & HUPCL) {
1163 stli_mkasysigs(&portp->asig, 0, 0);
1164 if (test_bit(ST_CMDING, &portp->state))
1165 set_bit(ST_DOSIGS, &portp->state);
1167 stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig,
1168 sizeof(asysigs_t), 0);
1170 clear_bit(ST_TXBUSY, &portp->state);
1171 clear_bit(ST_RXSTOP, &portp->state);
1172 set_bit(TTY_IO_ERROR, &tty->flags);
1173 if (tty->ldisc.flush_buffer)
1174 (tty->ldisc.flush_buffer)(tty);
1175 set_bit(ST_DOFLUSHRX, &portp->state);
1176 stli_flushbuffer(tty);
1179 portp->tty = (struct tty_struct *) NULL;
1181 if (portp->openwaitcnt) {
1182 if (portp->close_delay)
1183 stli_delay(portp->close_delay);
1184 wake_up_interruptible(&portp->open_wait);
1187 portp->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
1188 wake_up_interruptible(&portp->close_wait);
1189 restore_flags(flags);
1192 /*****************************************************************************/
1195 * Carry out first open operations on a port. This involves a number of
1196 * commands to be sent to the slave. We need to open the port, set the
1197 * notification events, set the initial port settings, get and set the
1198 * initial signal values. We sleep and wait in between each one. But
1199 * this still all happens pretty quickly.
1202 static int stli_initopen(stlibrd_t *brdp, stliport_t *portp)
1204 struct tty_struct *tty;
1210 printk("stli_initopen(brdp=%x,portp=%x)\n", (int) brdp, (int) portp);
1213 if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0)
1216 memset(&nt, 0, sizeof(asynotify_t));
1217 nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK);
1219 if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt,
1220 sizeof(asynotify_t), 0)) < 0)
1224 if (tty == (struct tty_struct *) NULL)
1226 stli_mkasyport(portp, &aport, tty->termios);
1227 if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport,
1228 sizeof(asyport_t), 0)) < 0)
1231 set_bit(ST_GETSIGS, &portp->state);
1232 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig,
1233 sizeof(asysigs_t), 1)) < 0)
1235 if (test_and_clear_bit(ST_GETSIGS, &portp->state))
1236 portp->sigs = stli_mktiocm(portp->asig.sigvalue);
1237 stli_mkasysigs(&portp->asig, 1, 1);
1238 if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1239 sizeof(asysigs_t), 0)) < 0)
1245 /*****************************************************************************/
1248 * Send an open message to the slave. This will sleep waiting for the
1249 * acknowledgement, so must have user context. We need to co-ordinate
1250 * with close events here, since we don't want open and close events
1254 static int stli_rawopen(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait)
1256 volatile cdkhdr_t *hdrp;
1257 volatile cdkctrl_t *cp;
1258 volatile unsigned char *bits;
1259 unsigned long flags;
1263 printk("stli_rawopen(brdp=%x,portp=%x,arg=%x,wait=%d)\n",
1264 (int) brdp, (int) portp, (int) arg, wait);
1268 * Send a message to the slave to open this port.
1274 * Slave is already closing this port. This can happen if a hangup
1275 * occurs on this port. So we must wait until it is complete. The
1276 * order of opens and closes may not be preserved across shared
1277 * memory, so we must wait until it is complete.
1279 while (test_bit(ST_CLOSING, &portp->state)) {
1280 if (signal_pending(current)) {
1281 restore_flags(flags);
1282 return(-ERESTARTSYS);
1284 interruptible_sleep_on(&portp->raw_wait);
1288 * Everything is ready now, so write the open message into shared
1289 * memory. Once the message is in set the service bits to say that
1290 * this port wants service.
1293 cp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1296 hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1297 bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset +
1299 *bits |= portp->portbit;
1303 restore_flags(flags);
1308 * Slave is in action, so now we must wait for the open acknowledgment
1312 set_bit(ST_OPENING, &portp->state);
1313 while (test_bit(ST_OPENING, &portp->state)) {
1314 if (signal_pending(current)) {
1318 interruptible_sleep_on(&portp->raw_wait);
1320 restore_flags(flags);
1322 if ((rc == 0) && (portp->rc != 0))
1327 /*****************************************************************************/
1330 * Send a close message to the slave. Normally this will sleep waiting
1331 * for the acknowledgement, but if wait parameter is 0 it will not. If
1332 * wait is true then must have user context (to sleep).
1335 static int stli_rawclose(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait)
1337 volatile cdkhdr_t *hdrp;
1338 volatile cdkctrl_t *cp;
1339 volatile unsigned char *bits;
1340 unsigned long flags;
1344 printk("stli_rawclose(brdp=%x,portp=%x,arg=%x,wait=%d)\n",
1345 (int) brdp, (int) portp, (int) arg, wait);
1352 * Slave is already closing this port. This can happen if a hangup
1353 * occurs on this port.
1356 while (test_bit(ST_CLOSING, &portp->state)) {
1357 if (signal_pending(current)) {
1358 restore_flags(flags);
1359 return(-ERESTARTSYS);
1361 interruptible_sleep_on(&portp->raw_wait);
1366 * Write the close command into shared memory.
1369 cp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1372 hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1373 bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset +
1375 *bits |= portp->portbit;
1378 set_bit(ST_CLOSING, &portp->state);
1380 restore_flags(flags);
1385 * Slave is in action, so now we must wait for the open acknowledgment
1389 while (test_bit(ST_CLOSING, &portp->state)) {
1390 if (signal_pending(current)) {
1394 interruptible_sleep_on(&portp->raw_wait);
1396 restore_flags(flags);
1398 if ((rc == 0) && (portp->rc != 0))
1403 /*****************************************************************************/
1406 * Send a command to the slave and wait for the response. This must
1407 * have user context (it sleeps). This routine is generic in that it
1408 * can send any type of command. Its purpose is to wait for that command
1409 * to complete (as opposed to initiating the command then returning).
1412 static int stli_cmdwait(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback)
1414 unsigned long flags;
1417 printk("stli_cmdwait(brdp=%x,portp=%x,cmd=%x,arg=%x,size=%d,"
1418 "copyback=%d)\n", (int) brdp, (int) portp, (int) cmd,
1419 (int) arg, size, copyback);
1424 while (test_bit(ST_CMDING, &portp->state)) {
1425 if (signal_pending(current)) {
1426 restore_flags(flags);
1427 return(-ERESTARTSYS);
1429 interruptible_sleep_on(&portp->raw_wait);
1432 stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
1434 while (test_bit(ST_CMDING, &portp->state)) {
1435 if (signal_pending(current)) {
1436 restore_flags(flags);
1437 return(-ERESTARTSYS);
1439 interruptible_sleep_on(&portp->raw_wait);
1441 restore_flags(flags);
1448 /*****************************************************************************/
1451 * Send the termios settings for this port to the slave. This sleeps
1452 * waiting for the command to complete - so must have user context.
1455 static int stli_setport(stliport_t *portp)
1461 printk("stli_setport(portp=%x)\n", (int) portp);
1464 if (portp == (stliport_t *) NULL)
1466 if (portp->tty == (struct tty_struct *) NULL)
1468 if ((portp->brdnr < 0) && (portp->brdnr >= stli_nrbrds))
1470 brdp = stli_brds[portp->brdnr];
1471 if (brdp == (stlibrd_t *) NULL)
1474 stli_mkasyport(portp, &aport, portp->tty->termios);
1475 return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0));
1478 /*****************************************************************************/
1481 * Wait for a specified delay period, this is not a busy-loop. It will
1482 * give up the processor while waiting. Unfortunately this has some
1483 * rather intimate knowledge of the process management stuff.
1486 static void stli_delay(int len)
1489 printk("stli_delay(len=%d)\n", len);
1492 set_current_state(TASK_INTERRUPTIBLE);
1493 schedule_timeout(len);
1497 /*****************************************************************************/
1500 * Possibly need to wait for carrier (DCD signal) to come high. Say
1501 * maybe because if we are clocal then we don't need to wait...
1504 static int stli_waitcarrier(stlibrd_t *brdp, stliport_t *portp, struct file *filp)
1506 unsigned long flags;
1510 printk("stli_waitcarrier(brdp=%x,portp=%x,filp=%x)\n",
1511 (int) brdp, (int) portp, (int) filp);
1517 if (portp->tty->termios->c_cflag & CLOCAL)
1522 portp->openwaitcnt++;
1523 if (! tty_hung_up_p(filp))
1527 stli_mkasysigs(&portp->asig, 1, 1);
1528 if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS,
1529 &portp->asig, sizeof(asysigs_t), 0)) < 0)
1531 if (tty_hung_up_p(filp) ||
1532 ((portp->flags & ASYNC_INITIALIZED) == 0)) {
1533 if (portp->flags & ASYNC_HUP_NOTIFY)
1539 if (((portp->flags & ASYNC_CLOSING) == 0) &&
1540 (doclocal || (portp->sigs & TIOCM_CD))) {
1543 if (signal_pending(current)) {
1547 interruptible_sleep_on(&portp->open_wait);
1550 if (! tty_hung_up_p(filp))
1552 portp->openwaitcnt--;
1553 restore_flags(flags);
1558 /*****************************************************************************/
1561 * Write routine. Take the data and put it in the shared memory ring
1562 * queue. If port is not already sending chars then need to mark the
1563 * service bits for this port.
1566 static int stli_write(struct tty_struct *tty, int from_user, const unsigned char *buf, int count)
1568 volatile cdkasy_t *ap;
1569 volatile cdkhdr_t *hdrp;
1570 volatile unsigned char *bits;
1571 unsigned char *shbuf, *chbuf;
1574 unsigned int len, stlen, head, tail, size;
1575 unsigned long flags;
1578 printk("stli_write(tty=%x,from_user=%d,buf=%x,count=%d)\n",
1579 (int) tty, from_user, (int) buf, count);
1582 if ((tty == (struct tty_struct *) NULL) ||
1583 (stli_tmpwritebuf == (char *) NULL))
1585 if (tty == stli_txcooktty)
1586 stli_flushchars(tty);
1587 portp = tty->driver_data;
1588 if (portp == (stliport_t *) NULL)
1590 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
1592 brdp = stli_brds[portp->brdnr];
1593 if (brdp == (stlibrd_t *) NULL)
1595 chbuf = (unsigned char *) buf;
1598 * If copying direct from user space we need to be able to handle page
1599 * faults while we are copying. To do this copy as much as we can now
1600 * into a kernel buffer. From there we copy it into shared memory. The
1601 * big problem is that we do not want shared memory enabled when we are
1602 * sleeping (other boards may be serviced while asleep). Something else
1603 * to note here is the reading of the tail twice. Since the boards
1604 * shared memory can be on an 8-bit bus then we need to be very careful
1605 * reading 16 bit quantities - since both the board (slave) and host
1606 * could be writing and reading at the same time.
1612 ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr);
1613 head = (unsigned int) ap->txq.head;
1614 tail = (unsigned int) ap->txq.tail;
1615 if (tail != ((unsigned int) ap->txq.tail))
1616 tail = (unsigned int) ap->txq.tail;
1617 len = (head >= tail) ? (portp->txsize - (head - tail) - 1) :
1619 count = MIN(len, count);
1621 restore_flags(flags);
1623 down(&stli_tmpwritesem);
1624 if (copy_from_user(stli_tmpwritebuf, chbuf, count))
1626 chbuf = &stli_tmpwritebuf[0];
1630 * All data is now local, shove as much as possible into shared memory.
1635 ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr);
1636 head = (unsigned int) ap->txq.head;
1637 tail = (unsigned int) ap->txq.tail;
1638 if (tail != ((unsigned int) ap->txq.tail))
1639 tail = (unsigned int) ap->txq.tail;
1640 size = portp->txsize;
1642 len = size - (head - tail) - 1;
1643 stlen = size - head;
1645 len = tail - head - 1;
1649 len = MIN(len, count);
1651 shbuf = (char *) EBRDGETMEMPTR(brdp, portp->txoffset);
1654 stlen = MIN(len, stlen);
1655 memcpy((shbuf + head), chbuf, stlen);
1666 ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr);
1667 ap->txq.head = head;
1668 if (test_bit(ST_TXBUSY, &portp->state)) {
1669 if (ap->changed.data & DT_TXEMPTY)
1670 ap->changed.data &= ~DT_TXEMPTY;
1672 hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1673 bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset +
1675 *bits |= portp->portbit;
1676 set_bit(ST_TXBUSY, &portp->state);
1680 up(&stli_tmpwritesem);
1681 restore_flags(flags);
1686 /*****************************************************************************/
1689 * Output a single character. We put it into a temporary local buffer
1690 * (for speed) then write out that buffer when the flushchars routine
1691 * is called. There is a safety catch here so that if some other port
1692 * writes chars before the current buffer has been, then we write them
1693 * first them do the new ports.
1696 static void stli_putchar(struct tty_struct *tty, unsigned char ch)
1699 printk("stli_putchar(tty=%x,ch=%x)\n", (int) tty, (int) ch);
1702 if (tty == (struct tty_struct *) NULL)
1704 if (tty != stli_txcooktty) {
1705 if (stli_txcooktty != (struct tty_struct *) NULL)
1706 stli_flushchars(stli_txcooktty);
1707 stli_txcooktty = tty;
1710 stli_txcookbuf[stli_txcooksize++] = ch;
1713 /*****************************************************************************/
1716 * Transfer characters from the local TX cooking buffer to the board.
1717 * We sort of ignore the tty that gets passed in here. We rely on the
1718 * info stored with the TX cook buffer to tell us which port to flush
1719 * the data on. In any case we clean out the TX cook buffer, for re-use
1723 static void stli_flushchars(struct tty_struct *tty)
1725 volatile cdkhdr_t *hdrp;
1726 volatile unsigned char *bits;
1727 volatile cdkasy_t *ap;
1728 struct tty_struct *cooktty;
1731 unsigned int len, stlen, head, tail, size, count, cooksize;
1732 unsigned char *buf, *shbuf;
1733 unsigned long flags;
1736 printk("stli_flushchars(tty=%x)\n", (int) tty);
1739 cooksize = stli_txcooksize;
1740 cooktty = stli_txcooktty;
1741 stli_txcooksize = 0;
1742 stli_txcookrealsize = 0;
1743 stli_txcooktty = (struct tty_struct *) NULL;
1745 if (tty == (struct tty_struct *) NULL)
1747 if (cooktty == (struct tty_struct *) NULL)
1754 portp = tty->driver_data;
1755 if (portp == (stliport_t *) NULL)
1757 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
1759 brdp = stli_brds[portp->brdnr];
1760 if (brdp == (stlibrd_t *) NULL)
1767 ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr);
1768 head = (unsigned int) ap->txq.head;
1769 tail = (unsigned int) ap->txq.tail;
1770 if (tail != ((unsigned int) ap->txq.tail))
1771 tail = (unsigned int) ap->txq.tail;
1772 size = portp->txsize;
1774 len = size - (head - tail) - 1;
1775 stlen = size - head;
1777 len = tail - head - 1;
1781 len = MIN(len, cooksize);
1783 shbuf = (char *) EBRDGETMEMPTR(brdp, portp->txoffset);
1784 buf = stli_txcookbuf;
1787 stlen = MIN(len, stlen);
1788 memcpy((shbuf + head), buf, stlen);
1799 ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr);
1800 ap->txq.head = head;
1802 if (test_bit(ST_TXBUSY, &portp->state)) {
1803 if (ap->changed.data & DT_TXEMPTY)
1804 ap->changed.data &= ~DT_TXEMPTY;
1806 hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1807 bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset +
1809 *bits |= portp->portbit;
1810 set_bit(ST_TXBUSY, &portp->state);
1813 restore_flags(flags);
1816 /*****************************************************************************/
1818 static int stli_writeroom(struct tty_struct *tty)
1820 volatile cdkasyrq_t *rp;
1823 unsigned int head, tail, len;
1824 unsigned long flags;
1827 printk("stli_writeroom(tty=%x)\n", (int) tty);
1830 if (tty == (struct tty_struct *) NULL)
1832 if (tty == stli_txcooktty) {
1833 if (stli_txcookrealsize != 0) {
1834 len = stli_txcookrealsize - stli_txcooksize;
1839 portp = tty->driver_data;
1840 if (portp == (stliport_t *) NULL)
1842 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
1844 brdp = stli_brds[portp->brdnr];
1845 if (brdp == (stlibrd_t *) NULL)
1851 rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1852 head = (unsigned int) rp->head;
1853 tail = (unsigned int) rp->tail;
1854 if (tail != ((unsigned int) rp->tail))
1855 tail = (unsigned int) rp->tail;
1856 len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head);
1859 restore_flags(flags);
1861 if (tty == stli_txcooktty) {
1862 stli_txcookrealsize = len;
1863 len -= stli_txcooksize;
1868 /*****************************************************************************/
1871 * Return the number of characters in the transmit buffer. Normally we
1872 * will return the number of chars in the shared memory ring queue.
1873 * We need to kludge around the case where the shared memory buffer is
1874 * empty but not all characters have drained yet, for this case just
1875 * return that there is 1 character in the buffer!
1878 static int stli_charsinbuffer(struct tty_struct *tty)
1880 volatile cdkasyrq_t *rp;
1883 unsigned int head, tail, len;
1884 unsigned long flags;
1887 printk("stli_charsinbuffer(tty=%x)\n", (int) tty);
1890 if (tty == (struct tty_struct *) NULL)
1892 if (tty == stli_txcooktty)
1893 stli_flushchars(tty);
1894 portp = tty->driver_data;
1895 if (portp == (stliport_t *) NULL)
1897 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
1899 brdp = stli_brds[portp->brdnr];
1900 if (brdp == (stlibrd_t *) NULL)
1906 rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1907 head = (unsigned int) rp->head;
1908 tail = (unsigned int) rp->tail;
1909 if (tail != ((unsigned int) rp->tail))
1910 tail = (unsigned int) rp->tail;
1911 len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head));
1912 if ((len == 0) && test_bit(ST_TXBUSY, &portp->state))
1915 restore_flags(flags);
1920 /*****************************************************************************/
1923 * Generate the serial struct info.
1926 static int stli_getserial(stliport_t *portp, struct serial_struct __user *sp)
1928 struct serial_struct sio;
1932 printk("stli_getserial(portp=%x,sp=%x)\n", (int) portp, (int) sp);
1935 memset(&sio, 0, sizeof(struct serial_struct));
1936 sio.type = PORT_UNKNOWN;
1937 sio.line = portp->portnr;
1939 sio.flags = portp->flags;
1940 sio.baud_base = portp->baud_base;
1941 sio.close_delay = portp->close_delay;
1942 sio.closing_wait = portp->closing_wait;
1943 sio.custom_divisor = portp->custom_divisor;
1944 sio.xmit_fifo_size = 0;
1947 brdp = stli_brds[portp->brdnr];
1948 if (brdp != (stlibrd_t *) NULL)
1949 sio.port = brdp->iobase;
1951 return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ?
1955 /*****************************************************************************/
1958 * Set port according to the serial struct info.
1959 * At this point we do not do any auto-configure stuff, so we will
1960 * just quietly ignore any requests to change irq, etc.
1963 static int stli_setserial(stliport_t *portp, struct serial_struct __user *sp)
1965 struct serial_struct sio;
1969 printk("stli_setserial(portp=%p,sp=%p)\n", portp, sp);
1972 if (copy_from_user(&sio, sp, sizeof(struct serial_struct)))
1974 if (!capable(CAP_SYS_ADMIN)) {
1975 if ((sio.baud_base != portp->baud_base) ||
1976 (sio.close_delay != portp->close_delay) ||
1977 ((sio.flags & ~ASYNC_USR_MASK) !=
1978 (portp->flags & ~ASYNC_USR_MASK)))
1982 portp->flags = (portp->flags & ~ASYNC_USR_MASK) |
1983 (sio.flags & ASYNC_USR_MASK);
1984 portp->baud_base = sio.baud_base;
1985 portp->close_delay = sio.close_delay;
1986 portp->closing_wait = sio.closing_wait;
1987 portp->custom_divisor = sio.custom_divisor;
1989 if ((rc = stli_setport(portp)) < 0)
1994 /*****************************************************************************/
1996 static int stli_tiocmget(struct tty_struct *tty, struct file *file)
1998 stliport_t *portp = tty->driver_data;
2002 if (portp == (stliport_t *) NULL)
2004 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
2006 brdp = stli_brds[portp->brdnr];
2007 if (brdp == (stlibrd_t *) NULL)
2009 if (tty->flags & (1 << TTY_IO_ERROR))
2012 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS,
2013 &portp->asig, sizeof(asysigs_t), 1)) < 0)
2016 return stli_mktiocm(portp->asig.sigvalue);
2019 static int stli_tiocmset(struct tty_struct *tty, struct file *file,
2020 unsigned int set, unsigned int clear)
2022 stliport_t *portp = tty->driver_data;
2024 int rts = -1, dtr = -1;
2026 if (portp == (stliport_t *) NULL)
2028 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
2030 brdp = stli_brds[portp->brdnr];
2031 if (brdp == (stlibrd_t *) NULL)
2033 if (tty->flags & (1 << TTY_IO_ERROR))
2036 if (set & TIOCM_RTS)
2038 if (set & TIOCM_DTR)
2040 if (clear & TIOCM_RTS)
2042 if (clear & TIOCM_DTR)
2045 stli_mkasysigs(&portp->asig, dtr, rts);
2047 return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
2048 sizeof(asysigs_t), 0);
2051 static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg)
2057 void __user *argp = (void __user *)arg;
2060 printk("stli_ioctl(tty=%x,file=%x,cmd=%x,arg=%x)\n",
2061 (int) tty, (int) file, cmd, (int) arg);
2064 if (tty == (struct tty_struct *) NULL)
2066 portp = tty->driver_data;
2067 if (portp == (stliport_t *) NULL)
2069 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
2071 brdp = stli_brds[portp->brdnr];
2072 if (brdp == (stlibrd_t *) NULL)
2075 if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
2076 (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) {
2077 if (tty->flags & (1 << TTY_IO_ERROR))
2085 rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0),
2086 (unsigned __user *) arg);
2089 if ((rc = get_user(ival, (unsigned __user *) arg)) == 0)
2090 tty->termios->c_cflag =
2091 (tty->termios->c_cflag & ~CLOCAL) |
2092 (ival ? CLOCAL : 0);
2095 rc = stli_getserial(portp, argp);
2098 rc = stli_setserial(portp, argp);
2101 rc = put_user(portp->pflag, (unsigned __user *)argp);
2104 if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0)
2105 stli_setport(portp);
2107 case COM_GETPORTSTATS:
2108 rc = stli_getportstats(portp, argp);
2110 case COM_CLRPORTSTATS:
2111 rc = stli_clrportstats(portp, argp);
2117 case TIOCSERGSTRUCT:
2118 case TIOCSERGETMULTI:
2119 case TIOCSERSETMULTI:
2128 /*****************************************************************************/
2131 * This routine assumes that we have user context and can sleep.
2132 * Looks like it is true for the current ttys implementation..!!
2135 static void stli_settermios(struct tty_struct *tty, struct termios *old)
2139 struct termios *tiosp;
2143 printk("stli_settermios(tty=%x,old=%x)\n", (int) tty, (int) old);
2146 if (tty == (struct tty_struct *) NULL)
2148 portp = tty->driver_data;
2149 if (portp == (stliport_t *) NULL)
2151 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
2153 brdp = stli_brds[portp->brdnr];
2154 if (brdp == (stlibrd_t *) NULL)
2157 tiosp = tty->termios;
2158 if ((tiosp->c_cflag == old->c_cflag) &&
2159 (tiosp->c_iflag == old->c_iflag))
2162 stli_mkasyport(portp, &aport, tiosp);
2163 stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0);
2164 stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1);
2165 stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
2166 sizeof(asysigs_t), 0);
2167 if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0))
2168 tty->hw_stopped = 0;
2169 if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL))
2170 wake_up_interruptible(&portp->open_wait);
2173 /*****************************************************************************/
2176 * Attempt to flow control who ever is sending us data. We won't really
2177 * do any flow control action here. We can't directly, and even if we
2178 * wanted to we would have to send a command to the slave. The slave
2179 * knows how to flow control, and will do so when its buffers reach its
2180 * internal high water marks. So what we will do is set a local state
2181 * bit that will stop us sending any RX data up from the poll routine
2182 * (which is the place where RX data from the slave is handled).
2185 static void stli_throttle(struct tty_struct *tty)
2190 printk("stli_throttle(tty=%x)\n", (int) tty);
2193 if (tty == (struct tty_struct *) NULL)
2195 portp = tty->driver_data;
2196 if (portp == (stliport_t *) NULL)
2199 set_bit(ST_RXSTOP, &portp->state);
2202 /*****************************************************************************/
2205 * Unflow control the device sending us data... That means that all
2206 * we have to do is clear the RXSTOP state bit. The next poll call
2207 * will then be able to pass the RX data back up.
2210 static void stli_unthrottle(struct tty_struct *tty)
2215 printk("stli_unthrottle(tty=%x)\n", (int) tty);
2218 if (tty == (struct tty_struct *) NULL)
2220 portp = tty->driver_data;
2221 if (portp == (stliport_t *) NULL)
2224 clear_bit(ST_RXSTOP, &portp->state);
2227 /*****************************************************************************/
2230 * Stop the transmitter. Basically to do this we will just turn TX
2234 static void stli_stop(struct tty_struct *tty)
2241 printk("stli_stop(tty=%x)\n", (int) tty);
2244 if (tty == (struct tty_struct *) NULL)
2246 portp = tty->driver_data;
2247 if (portp == (stliport_t *) NULL)
2249 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
2251 brdp = stli_brds[portp->brdnr];
2252 if (brdp == (stlibrd_t *) NULL)
2255 memset(&actrl, 0, sizeof(asyctrl_t));
2256 actrl.txctrl = CT_STOPFLOW;
2258 stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
2262 /*****************************************************************************/
2265 * Start the transmitter again. Just turn TX interrupts back on.
2268 static void stli_start(struct tty_struct *tty)
2275 printk("stli_start(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 memset(&actrl, 0, sizeof(asyctrl_t));
2290 actrl.txctrl = CT_STARTFLOW;
2292 stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
2296 /*****************************************************************************/
2299 * Scheduler called hang up routine. This is called from the scheduler,
2300 * not direct from the driver "poll" routine. We can't call it there
2301 * since the real local hangup code will enable/disable the board and
2302 * other things that we can't do while handling the poll. Much easier
2303 * to deal with it some time later (don't really care when, hangups
2304 * aren't that time critical).
2307 static void stli_dohangup(void *arg)
2312 printk(KERN_DEBUG "stli_dohangup(portp=%x)\n", (int) arg);
2316 * FIXME: There's a module removal race here: tty_hangup
2317 * calls schedule_work which will call into this
2320 portp = (stliport_t *) arg;
2321 if (portp != (stliport_t *) NULL) {
2322 if (portp->tty != (struct tty_struct *) NULL) {
2323 tty_hangup(portp->tty);
2328 /*****************************************************************************/
2331 * Hangup this port. This is pretty much like closing the port, only
2332 * a little more brutal. No waiting for data to drain. Shutdown the
2333 * port and maybe drop signals. This is rather tricky really. We want
2334 * to close the port as well.
2337 static void stli_hangup(struct tty_struct *tty)
2341 unsigned long flags;
2344 printk(KERN_DEBUG "stli_hangup(tty=%x)\n", (int) tty);
2347 if (tty == (struct tty_struct *) NULL)
2349 portp = tty->driver_data;
2350 if (portp == (stliport_t *) NULL)
2352 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
2354 brdp = stli_brds[portp->brdnr];
2355 if (brdp == (stlibrd_t *) NULL)
2358 portp->flags &= ~ASYNC_INITIALIZED;
2362 if (! test_bit(ST_CLOSING, &portp->state))
2363 stli_rawclose(brdp, portp, 0, 0);
2364 if (tty->termios->c_cflag & HUPCL) {
2365 stli_mkasysigs(&portp->asig, 0, 0);
2366 if (test_bit(ST_CMDING, &portp->state)) {
2367 set_bit(ST_DOSIGS, &portp->state);
2368 set_bit(ST_DOFLUSHTX, &portp->state);
2369 set_bit(ST_DOFLUSHRX, &portp->state);
2371 stli_sendcmd(brdp, portp, A_SETSIGNALSF,
2372 &portp->asig, sizeof(asysigs_t), 0);
2375 restore_flags(flags);
2377 clear_bit(ST_TXBUSY, &portp->state);
2378 clear_bit(ST_RXSTOP, &portp->state);
2379 set_bit(TTY_IO_ERROR, &tty->flags);
2380 portp->tty = (struct tty_struct *) NULL;
2381 portp->flags &= ~ASYNC_NORMAL_ACTIVE;
2382 portp->refcount = 0;
2383 wake_up_interruptible(&portp->open_wait);
2386 /*****************************************************************************/
2389 * Flush characters from the lower buffer. We may not have user context
2390 * so we cannot sleep waiting for it to complete. Also we need to check
2391 * if there is chars for this port in the TX cook buffer, and flush them
2395 static void stli_flushbuffer(struct tty_struct *tty)
2399 unsigned long ftype, flags;
2402 printk(KERN_DEBUG "stli_flushbuffer(tty=%x)\n", (int) tty);
2405 if (tty == (struct tty_struct *) NULL)
2407 portp = tty->driver_data;
2408 if (portp == (stliport_t *) NULL)
2410 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
2412 brdp = stli_brds[portp->brdnr];
2413 if (brdp == (stlibrd_t *) NULL)
2418 if (tty == stli_txcooktty) {
2419 stli_txcooktty = (struct tty_struct *) NULL;
2420 stli_txcooksize = 0;
2421 stli_txcookrealsize = 0;
2423 if (test_bit(ST_CMDING, &portp->state)) {
2424 set_bit(ST_DOFLUSHTX, &portp->state);
2427 if (test_bit(ST_DOFLUSHRX, &portp->state)) {
2429 clear_bit(ST_DOFLUSHRX, &portp->state);
2431 stli_sendcmd(brdp, portp, A_FLUSH, &ftype,
2432 sizeof(unsigned long), 0);
2434 restore_flags(flags);
2436 wake_up_interruptible(&tty->write_wait);
2437 if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
2438 tty->ldisc.write_wakeup)
2439 (tty->ldisc.write_wakeup)(tty);
2442 /*****************************************************************************/
2444 static void stli_breakctl(struct tty_struct *tty, int state)
2449 /* long savestate, savetime; */
2452 printk(KERN_DEBUG "stli_breakctl(tty=%x,state=%d)\n", (int) tty, state);
2455 if (tty == (struct tty_struct *) NULL)
2457 portp = tty->driver_data;
2458 if (portp == (stliport_t *) NULL)
2460 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
2462 brdp = stli_brds[portp->brdnr];
2463 if (brdp == (stlibrd_t *) NULL)
2467 * Due to a bug in the tty send_break() code we need to preserve
2468 * the current process state and timeout...
2469 savetime = current->timeout;
2470 savestate = current->state;
2473 arg = (state == -1) ? BREAKON : BREAKOFF;
2474 stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0);
2478 current->timeout = savetime;
2479 current->state = savestate;
2483 /*****************************************************************************/
2485 static void stli_waituntilsent(struct tty_struct *tty, int timeout)
2491 printk(KERN_DEBUG "stli_waituntilsent(tty=%x,timeout=%x)\n", (int) tty, timeout);
2494 if (tty == (struct tty_struct *) NULL)
2496 portp = tty->driver_data;
2497 if (portp == (stliport_t *) NULL)
2502 tend = jiffies + timeout;
2504 while (test_bit(ST_TXBUSY, &portp->state)) {
2505 if (signal_pending(current))
2508 if (time_after_eq(jiffies, tend))
2513 /*****************************************************************************/
2515 static void stli_sendxchar(struct tty_struct *tty, char ch)
2522 printk(KERN_DEBUG "stli_sendxchar(tty=%x,ch=%x)\n", (int) tty, ch);
2525 if (tty == (struct tty_struct *) NULL)
2527 portp = tty->driver_data;
2528 if (portp == (stliport_t *) NULL)
2530 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
2532 brdp = stli_brds[portp->brdnr];
2533 if (brdp == (stlibrd_t *) NULL)
2536 memset(&actrl, 0, sizeof(asyctrl_t));
2537 if (ch == STOP_CHAR(tty)) {
2538 actrl.rxctrl = CT_STOPFLOW;
2539 } else if (ch == START_CHAR(tty)) {
2540 actrl.rxctrl = CT_STARTFLOW;
2542 actrl.txctrl = CT_SENDCHR;
2546 stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
2549 /*****************************************************************************/
2554 * Format info for a specified port. The line is deliberately limited
2555 * to 80 characters. (If it is too long it will be truncated, if too
2556 * short then padded with spaces).
2559 static int stli_portinfo(stlibrd_t *brdp, stliport_t *portp, int portnr, char *pos)
2564 rc = stli_portcmdstats(portp);
2567 if (brdp->state & BST_STARTED) {
2568 switch (stli_comstats.hwid) {
2569 case 0: uart = "2681"; break;
2570 case 1: uart = "SC26198"; break;
2571 default: uart = "CD1400"; break;
2576 sp += sprintf(sp, "%d: uart:%s ", portnr, uart);
2578 if ((brdp->state & BST_STARTED) && (rc >= 0)) {
2579 sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal,
2580 (int) stli_comstats.rxtotal);
2582 if (stli_comstats.rxframing)
2583 sp += sprintf(sp, " fe:%d",
2584 (int) stli_comstats.rxframing);
2585 if (stli_comstats.rxparity)
2586 sp += sprintf(sp, " pe:%d",
2587 (int) stli_comstats.rxparity);
2588 if (stli_comstats.rxbreaks)
2589 sp += sprintf(sp, " brk:%d",
2590 (int) stli_comstats.rxbreaks);
2591 if (stli_comstats.rxoverrun)
2592 sp += sprintf(sp, " oe:%d",
2593 (int) stli_comstats.rxoverrun);
2595 cnt = sprintf(sp, "%s%s%s%s%s ",
2596 (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "",
2597 (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "",
2598 (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "",
2599 (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "",
2600 (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : "");
2605 for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++)
2608 pos[(MAXLINE - 2)] = '+';
2609 pos[(MAXLINE - 1)] = '\n';
2614 /*****************************************************************************/
2617 * Port info, read from the /proc file system.
2620 static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data)
2624 int brdnr, portnr, totalport;
2629 printk(KERN_DEBUG "stli_readproc(page=%x,start=%x,off=%x,count=%d,eof=%x,"
2630 "data=%x\n", (int) page, (int) start, (int) off, count,
2631 (int) eof, (int) data);
2639 pos += sprintf(pos, "%s: version %s", stli_drvtitle,
2641 while (pos < (page + MAXLINE - 1))
2648 * We scan through for each board, panel and port. The offset is
2649 * calculated on the fly, and irrelevant ports are skipped.
2651 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
2652 brdp = stli_brds[brdnr];
2653 if (brdp == (stlibrd_t *) NULL)
2655 if (brdp->state == 0)
2658 maxoff = curoff + (brdp->nrports * MAXLINE);
2659 if (off >= maxoff) {
2664 totalport = brdnr * STL_MAXPORTS;
2665 for (portnr = 0; (portnr < brdp->nrports); portnr++,
2667 portp = brdp->ports[portnr];
2668 if (portp == (stliport_t *) NULL)
2670 if (off >= (curoff += MAXLINE))
2672 if ((pos - page + MAXLINE) > count)
2674 pos += stli_portinfo(brdp, portp, totalport, pos);
2685 /*****************************************************************************/
2688 * Generic send command routine. This will send a message to the slave,
2689 * of the specified type with the specified argument. Must be very
2690 * careful of data that will be copied out from shared memory -
2691 * containing command results. The command completion is all done from
2692 * a poll routine that does not have user context. Therefore you cannot
2693 * copy back directly into user space, or to the kernel stack of a
2694 * process. This routine does not sleep, so can be called from anywhere.
2697 static void stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback)
2699 volatile cdkhdr_t *hdrp;
2700 volatile cdkctrl_t *cp;
2701 volatile unsigned char *bits;
2702 unsigned long flags;
2705 printk(KERN_DEBUG "stli_sendcmd(brdp=%x,portp=%x,cmd=%x,arg=%x,size=%d,"
2706 "copyback=%d)\n", (int) brdp, (int) portp, (int) cmd,
2707 (int) arg, size, copyback);
2713 if (test_bit(ST_CMDING, &portp->state)) {
2714 printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n",
2716 restore_flags(flags);
2721 cp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
2723 memcpy((void *) &(cp->args[0]), arg, size);
2726 portp->argsize = size;
2731 hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2732 bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset +
2734 *bits |= portp->portbit;
2735 set_bit(ST_CMDING, &portp->state);
2737 restore_flags(flags);
2740 /*****************************************************************************/
2743 * Read data from shared memory. This assumes that the shared memory
2744 * is enabled and that interrupts are off. Basically we just empty out
2745 * the shared memory buffer into the tty buffer. Must be careful to
2746 * handle the case where we fill up the tty buffer, but still have
2747 * more chars to unload.
2750 static void stli_read(stlibrd_t *brdp, stliport_t *portp)
2752 volatile cdkasyrq_t *rp;
2753 volatile char *shbuf;
2754 struct tty_struct *tty;
2755 unsigned int head, tail, size;
2756 unsigned int len, stlen;
2759 printk(KERN_DEBUG "stli_read(brdp=%x,portp=%d)\n",
2760 (int) brdp, (int) portp);
2763 if (test_bit(ST_RXSTOP, &portp->state))
2766 if (tty == (struct tty_struct *) NULL)
2769 rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2770 head = (unsigned int) rp->head;
2771 if (head != ((unsigned int) rp->head))
2772 head = (unsigned int) rp->head;
2773 tail = (unsigned int) rp->tail;
2774 size = portp->rxsize;
2779 len = size - (tail - head);
2780 stlen = size - tail;
2783 len = MIN(len, (TTY_FLIPBUF_SIZE - tty->flip.count));
2784 shbuf = (volatile char *) EBRDGETMEMPTR(brdp, portp->rxoffset);
2787 stlen = MIN(len, stlen);
2788 memcpy(tty->flip.char_buf_ptr, (char *) (shbuf + tail), stlen);
2789 memset(tty->flip.flag_buf_ptr, 0, stlen);
2790 tty->flip.char_buf_ptr += stlen;
2791 tty->flip.flag_buf_ptr += stlen;
2792 tty->flip.count += stlen;
2801 rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2805 set_bit(ST_RXING, &portp->state);
2807 tty_schedule_flip(tty);
2810 /*****************************************************************************/
2813 * Set up and carry out any delayed commands. There is only a small set
2814 * of slave commands that can be done "off-level". So it is not too
2815 * difficult to deal with them here.
2818 static void stli_dodelaycmd(stliport_t *portp, volatile cdkctrl_t *cp)
2822 if (test_bit(ST_DOSIGS, &portp->state)) {
2823 if (test_bit(ST_DOFLUSHTX, &portp->state) &&
2824 test_bit(ST_DOFLUSHRX, &portp->state))
2825 cmd = A_SETSIGNALSF;
2826 else if (test_bit(ST_DOFLUSHTX, &portp->state))
2827 cmd = A_SETSIGNALSFTX;
2828 else if (test_bit(ST_DOFLUSHRX, &portp->state))
2829 cmd = A_SETSIGNALSFRX;
2832 clear_bit(ST_DOFLUSHTX, &portp->state);
2833 clear_bit(ST_DOFLUSHRX, &portp->state);
2834 clear_bit(ST_DOSIGS, &portp->state);
2835 memcpy((void *) &(cp->args[0]), (void *) &portp->asig,
2839 set_bit(ST_CMDING, &portp->state);
2840 } else if (test_bit(ST_DOFLUSHTX, &portp->state) ||
2841 test_bit(ST_DOFLUSHRX, &portp->state)) {
2842 cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0);
2843 cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0);
2844 clear_bit(ST_DOFLUSHTX, &portp->state);
2845 clear_bit(ST_DOFLUSHRX, &portp->state);
2846 memcpy((void *) &(cp->args[0]), (void *) &cmd, sizeof(int));
2849 set_bit(ST_CMDING, &portp->state);
2853 /*****************************************************************************/
2856 * Host command service checking. This handles commands or messages
2857 * coming from the slave to the host. Must have board shared memory
2858 * enabled and interrupts off when called. Notice that by servicing the
2859 * read data last we don't need to change the shared memory pointer
2860 * during processing (which is a slow IO operation).
2861 * Return value indicates if this port is still awaiting actions from
2862 * the slave (like open, command, or even TX data being sent). If 0
2863 * then port is still busy, otherwise no longer busy.
2866 static int stli_hostcmd(stlibrd_t *brdp, stliport_t *portp)
2868 volatile cdkasy_t *ap;
2869 volatile cdkctrl_t *cp;
2870 struct tty_struct *tty;
2872 unsigned long oldsigs;
2876 printk(KERN_DEBUG "stli_hostcmd(brdp=%x,channr=%d)\n",
2877 (int) brdp, channr);
2880 ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr);
2884 * Check if we are waiting for an open completion message.
2886 if (test_bit(ST_OPENING, &portp->state)) {
2887 rc = (int) cp->openarg;
2888 if ((cp->open == 0) && (rc != 0)) {
2893 clear_bit(ST_OPENING, &portp->state);
2894 wake_up_interruptible(&portp->raw_wait);
2899 * Check if we are waiting for a close completion message.
2901 if (test_bit(ST_CLOSING, &portp->state)) {
2902 rc = (int) cp->closearg;
2903 if ((cp->close == 0) && (rc != 0)) {
2908 clear_bit(ST_CLOSING, &portp->state);
2909 wake_up_interruptible(&portp->raw_wait);
2914 * Check if we are waiting for a command completion message. We may
2915 * need to copy out the command results associated with this command.
2917 if (test_bit(ST_CMDING, &portp->state)) {
2919 if ((cp->cmd == 0) && (rc != 0)) {
2922 if (portp->argp != (void *) NULL) {
2923 memcpy(portp->argp, (void *) &(cp->args[0]),
2925 portp->argp = (void *) NULL;
2929 clear_bit(ST_CMDING, &portp->state);
2930 stli_dodelaycmd(portp, cp);
2931 wake_up_interruptible(&portp->raw_wait);
2936 * Check for any notification messages ready. This includes lots of
2937 * different types of events - RX chars ready, RX break received,
2938 * TX data low or empty in the slave, modem signals changed state.
2947 if (nt.signal & SG_DCD) {
2948 oldsigs = portp->sigs;
2949 portp->sigs = stli_mktiocm(nt.sigvalue);
2950 clear_bit(ST_GETSIGS, &portp->state);
2951 if ((portp->sigs & TIOCM_CD) &&
2952 ((oldsigs & TIOCM_CD) == 0))
2953 wake_up_interruptible(&portp->open_wait);
2954 if ((oldsigs & TIOCM_CD) &&
2955 ((portp->sigs & TIOCM_CD) == 0)) {
2956 if (portp->flags & ASYNC_CHECK_CD) {
2958 schedule_work(&portp->tqhangup);
2963 if (nt.data & DT_TXEMPTY)
2964 clear_bit(ST_TXBUSY, &portp->state);
2965 if (nt.data & (DT_TXEMPTY | DT_TXLOW)) {
2966 if (tty != (struct tty_struct *) NULL) {
2967 if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
2968 tty->ldisc.write_wakeup) {
2969 (tty->ldisc.write_wakeup)(tty);
2972 wake_up_interruptible(&tty->write_wait);
2976 if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) {
2977 if (tty != (struct tty_struct *) NULL) {
2978 if (tty->flip.count < TTY_FLIPBUF_SIZE) {
2980 *tty->flip.flag_buf_ptr++ = TTY_BREAK;
2981 *tty->flip.char_buf_ptr++ = 0;
2982 if (portp->flags & ASYNC_SAK) {
2986 tty_schedule_flip(tty);
2991 if (nt.data & DT_RXBUSY) {
2993 stli_read(brdp, portp);
2998 * It might seem odd that we are checking for more RX chars here.
2999 * But, we need to handle the case where the tty buffer was previously
3000 * filled, but we had more characters to pass up. The slave will not
3001 * send any more RX notify messages until the RX buffer has been emptied.
3002 * But it will leave the service bits on (since the buffer is not empty).
3003 * So from here we can try to process more RX chars.
3005 if ((!donerx) && test_bit(ST_RXING, &portp->state)) {
3006 clear_bit(ST_RXING, &portp->state);
3007 stli_read(brdp, portp);
3010 return((test_bit(ST_OPENING, &portp->state) ||
3011 test_bit(ST_CLOSING, &portp->state) ||
3012 test_bit(ST_CMDING, &portp->state) ||
3013 test_bit(ST_TXBUSY, &portp->state) ||
3014 test_bit(ST_RXING, &portp->state)) ? 0 : 1);
3017 /*****************************************************************************/
3020 * Service all ports on a particular board. Assumes that the boards
3021 * shared memory is enabled, and that the page pointer is pointed
3022 * at the cdk header structure.
3025 static void stli_brdpoll(stlibrd_t *brdp, volatile cdkhdr_t *hdrp)
3028 unsigned char hostbits[(STL_MAXCHANS / 8) + 1];
3029 unsigned char slavebits[(STL_MAXCHANS / 8) + 1];
3030 unsigned char *slavep;
3031 int bitpos, bitat, bitsize;
3032 int channr, nrdevs, slavebitchange;
3034 bitsize = brdp->bitsize;
3035 nrdevs = brdp->nrdevs;
3038 * Check if slave wants any service. Basically we try to do as
3039 * little work as possible here. There are 2 levels of service
3040 * bits. So if there is nothing to do we bail early. We check
3041 * 8 service bits at a time in the inner loop, so we can bypass
3042 * the lot if none of them want service.
3044 memcpy(&hostbits[0], (((unsigned char *) hdrp) + brdp->hostoffset),
3047 memset(&slavebits[0], 0, bitsize);
3050 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
3051 if (hostbits[bitpos] == 0)
3053 channr = bitpos * 8;
3054 for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) {
3055 if (hostbits[bitpos] & bitat) {
3056 portp = brdp->ports[(channr - 1)];
3057 if (stli_hostcmd(brdp, portp)) {
3059 slavebits[bitpos] |= bitat;
3066 * If any of the ports are no longer busy then update them in the
3067 * slave request bits. We need to do this after, since a host port
3068 * service may initiate more slave requests.
3070 if (slavebitchange) {
3071 hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
3072 slavep = ((unsigned char *) hdrp) + brdp->slaveoffset;
3073 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
3074 if (slavebits[bitpos])
3075 slavep[bitpos] &= ~slavebits[bitpos];
3080 /*****************************************************************************/
3083 * Driver poll routine. This routine polls the boards in use and passes
3084 * messages back up to host when necessary. This is actually very
3085 * CPU efficient, since we will always have the kernel poll clock, it
3086 * adds only a few cycles when idle (since board service can be
3087 * determined very easily), but when loaded generates no interrupts
3088 * (with their expensive associated context change).
3091 static void stli_poll(unsigned long arg)
3093 volatile cdkhdr_t *hdrp;
3097 stli_timerlist.expires = STLI_TIMEOUT;
3098 add_timer(&stli_timerlist);
3101 * Check each board and do any servicing required.
3103 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
3104 brdp = stli_brds[brdnr];
3105 if (brdp == (stlibrd_t *) NULL)
3107 if ((brdp->state & BST_STARTED) == 0)
3111 hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
3113 stli_brdpoll(brdp, hdrp);
3118 /*****************************************************************************/
3121 * Translate the termios settings into the port setting structure of
3125 static void stli_mkasyport(stliport_t *portp, asyport_t *pp, struct termios *tiosp)
3128 printk(KERN_DEBUG "stli_mkasyport(portp=%x,pp=%x,tiosp=%d)\n",
3129 (int) portp, (int) pp, (int) tiosp);
3132 memset(pp, 0, sizeof(asyport_t));
3135 * Start of by setting the baud, char size, parity and stop bit info.
3137 pp->baudout = tiosp->c_cflag & CBAUD;
3138 if (pp->baudout & CBAUDEX) {
3139 pp->baudout &= ~CBAUDEX;
3140 if ((pp->baudout < 1) || (pp->baudout > 4))
3141 tiosp->c_cflag &= ~CBAUDEX;
3145 pp->baudout = stli_baudrates[pp->baudout];
3146 if ((tiosp->c_cflag & CBAUD) == B38400) {
3147 if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
3148 pp->baudout = 57600;
3149 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
3150 pp->baudout = 115200;
3151 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
3152 pp->baudout = 230400;
3153 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
3154 pp->baudout = 460800;
3155 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)
3156 pp->baudout = (portp->baud_base / portp->custom_divisor);
3158 if (pp->baudout > STL_MAXBAUD)
3159 pp->baudout = STL_MAXBAUD;
3160 pp->baudin = pp->baudout;
3162 switch (tiosp->c_cflag & CSIZE) {
3177 if (tiosp->c_cflag & CSTOPB)
3178 pp->stopbs = PT_STOP2;
3180 pp->stopbs = PT_STOP1;
3182 if (tiosp->c_cflag & PARENB) {
3183 if (tiosp->c_cflag & PARODD)
3184 pp->parity = PT_ODDPARITY;
3186 pp->parity = PT_EVENPARITY;
3188 pp->parity = PT_NOPARITY;
3192 * Set up any flow control options enabled.
3194 if (tiosp->c_iflag & IXON) {
3196 if (tiosp->c_iflag & IXANY)
3197 pp->flow |= F_IXANY;
3199 if (tiosp->c_cflag & CRTSCTS)
3200 pp->flow |= (F_RTSFLOW | F_CTSFLOW);
3202 pp->startin = tiosp->c_cc[VSTART];
3203 pp->stopin = tiosp->c_cc[VSTOP];
3204 pp->startout = tiosp->c_cc[VSTART];
3205 pp->stopout = tiosp->c_cc[VSTOP];
3208 * Set up the RX char marking mask with those RX error types we must
3209 * catch. We can get the slave to help us out a little here, it will
3210 * ignore parity errors and breaks for us, and mark parity errors in
3213 if (tiosp->c_iflag & IGNPAR)
3214 pp->iflag |= FI_IGNRXERRS;
3215 if (tiosp->c_iflag & IGNBRK)
3216 pp->iflag |= FI_IGNBREAK;
3218 portp->rxmarkmsk = 0;
3219 if (tiosp->c_iflag & (INPCK | PARMRK))
3220 pp->iflag |= FI_1MARKRXERRS;
3221 if (tiosp->c_iflag & BRKINT)
3222 portp->rxmarkmsk |= BRKINT;
3225 * Set up clocal processing as required.
3227 if (tiosp->c_cflag & CLOCAL)
3228 portp->flags &= ~ASYNC_CHECK_CD;
3230 portp->flags |= ASYNC_CHECK_CD;
3233 * Transfer any persistent flags into the asyport structure.
3235 pp->pflag = (portp->pflag & 0xffff);
3236 pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0;
3237 pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0;
3238 pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0;
3241 /*****************************************************************************/
3244 * Construct a slave signals structure for setting the DTR and RTS
3245 * signals as specified.
3248 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts)
3251 printk(KERN_DEBUG "stli_mkasysigs(sp=%x,dtr=%d,rts=%d)\n",
3252 (int) sp, dtr, rts);
3255 memset(sp, 0, sizeof(asysigs_t));
3257 sp->signal |= SG_DTR;
3258 sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0);
3261 sp->signal |= SG_RTS;
3262 sp->sigvalue |= ((rts > 0) ? SG_RTS : 0);
3266 /*****************************************************************************/
3269 * Convert the signals returned from the slave into a local TIOCM type
3270 * signals value. We keep them locally in TIOCM format.
3273 static long stli_mktiocm(unsigned long sigvalue)
3278 printk(KERN_DEBUG "stli_mktiocm(sigvalue=%x)\n", (int) sigvalue);
3282 tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0);
3283 tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0);
3284 tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0);
3285 tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0);
3286 tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0);
3287 tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0);
3291 /*****************************************************************************/
3294 * All panels and ports actually attached have been worked out. All
3295 * we need to do here is set up the appropriate per port data structures.
3298 static int stli_initports(stlibrd_t *brdp)
3301 int i, panelnr, panelport;
3304 printk(KERN_DEBUG "stli_initports(brdp=%x)\n", (int) brdp);
3307 for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) {
3308 portp = (stliport_t *) stli_memalloc(sizeof(stliport_t));
3309 if (portp == (stliport_t *) NULL) {
3310 printk("STALLION: failed to allocate port structure\n");
3314 memset(portp, 0, sizeof(stliport_t));
3315 portp->magic = STLI_PORTMAGIC;
3317 portp->brdnr = brdp->brdnr;
3318 portp->panelnr = panelnr;
3319 portp->baud_base = STL_BAUDBASE;
3320 portp->close_delay = STL_CLOSEDELAY;
3321 portp->closing_wait = 30 * HZ;
3322 INIT_WORK(&portp->tqhangup, stli_dohangup, portp);
3323 init_waitqueue_head(&portp->open_wait);
3324 init_waitqueue_head(&portp->close_wait);
3325 init_waitqueue_head(&portp->raw_wait);
3327 if (panelport >= brdp->panels[panelnr]) {
3331 brdp->ports[i] = portp;
3337 /*****************************************************************************/
3340 * All the following routines are board specific hardware operations.
3343 static void stli_ecpinit(stlibrd_t *brdp)
3345 unsigned long memconf;
3348 printk(KERN_DEBUG "stli_ecpinit(brdp=%d)\n", (int) brdp);
3351 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
3353 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
3356 memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT;
3357 outb(memconf, (brdp->iobase + ECP_ATMEMAR));
3360 /*****************************************************************************/
3362 static void stli_ecpenable(stlibrd_t *brdp)
3365 printk(KERN_DEBUG "stli_ecpenable(brdp=%x)\n", (int) brdp);
3367 outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR));
3370 /*****************************************************************************/
3372 static void stli_ecpdisable(stlibrd_t *brdp)
3375 printk(KERN_DEBUG "stli_ecpdisable(brdp=%x)\n", (int) brdp);
3377 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
3380 /*****************************************************************************/
3382 static char *stli_ecpgetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3388 printk(KERN_DEBUG "stli_ecpgetmemptr(brdp=%x,offset=%x)\n", (int) brdp,
3392 if (offset > brdp->memsize) {
3393 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3394 "range at line=%d(%d), brd=%d\n",
3395 (int) offset, line, __LINE__, brdp->brdnr);
3399 ptr = brdp->membase + (offset % ECP_ATPAGESIZE);
3400 val = (unsigned char) (offset / ECP_ATPAGESIZE);
3402 outb(val, (brdp->iobase + ECP_ATMEMPR));
3406 /*****************************************************************************/
3408 static void stli_ecpreset(stlibrd_t *brdp)
3411 printk(KERN_DEBUG "stli_ecpreset(brdp=%x)\n", (int) brdp);
3414 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
3416 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
3420 /*****************************************************************************/
3422 static void stli_ecpintr(stlibrd_t *brdp)
3425 printk(KERN_DEBUG "stli_ecpintr(brdp=%x)\n", (int) brdp);
3427 outb(0x1, brdp->iobase);
3430 /*****************************************************************************/
3433 * The following set of functions act on ECP EISA boards.
3436 static void stli_ecpeiinit(stlibrd_t *brdp)
3438 unsigned long memconf;
3441 printk(KERN_DEBUG "stli_ecpeiinit(brdp=%x)\n", (int) brdp);
3444 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
3445 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
3447 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3450 memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL;
3451 outb(memconf, (brdp->iobase + ECP_EIMEMARL));
3452 memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH;
3453 outb(memconf, (brdp->iobase + ECP_EIMEMARH));
3456 /*****************************************************************************/
3458 static void stli_ecpeienable(stlibrd_t *brdp)
3460 outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR));
3463 /*****************************************************************************/
3465 static void stli_ecpeidisable(stlibrd_t *brdp)
3467 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3470 /*****************************************************************************/
3472 static char *stli_ecpeigetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3478 printk(KERN_DEBUG "stli_ecpeigetmemptr(brdp=%x,offset=%x,line=%d)\n",
3479 (int) brdp, (int) offset, line);
3482 if (offset > brdp->memsize) {
3483 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3484 "range at line=%d(%d), brd=%d\n",
3485 (int) offset, line, __LINE__, brdp->brdnr);
3489 ptr = brdp->membase + (offset % ECP_EIPAGESIZE);
3490 if (offset < ECP_EIPAGESIZE)
3493 val = ECP_EIENABLE | 0x40;
3495 outb(val, (brdp->iobase + ECP_EICONFR));
3499 /*****************************************************************************/
3501 static void stli_ecpeireset(stlibrd_t *brdp)
3503 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
3505 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3509 /*****************************************************************************/
3512 * The following set of functions act on ECP MCA boards.
3515 static void stli_ecpmcenable(stlibrd_t *brdp)
3517 outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR));
3520 /*****************************************************************************/
3522 static void stli_ecpmcdisable(stlibrd_t *brdp)
3524 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
3527 /*****************************************************************************/
3529 static char *stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3534 if (offset > brdp->memsize) {
3535 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3536 "range at line=%d(%d), brd=%d\n",
3537 (int) offset, line, __LINE__, brdp->brdnr);
3541 ptr = brdp->membase + (offset % ECP_MCPAGESIZE);
3542 val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE;
3544 outb(val, (brdp->iobase + ECP_MCCONFR));
3548 /*****************************************************************************/
3550 static void stli_ecpmcreset(stlibrd_t *brdp)
3552 outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR));
3554 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
3558 /*****************************************************************************/
3561 * The following set of functions act on ECP PCI boards.
3564 static void stli_ecppciinit(stlibrd_t *brdp)
3567 printk(KERN_DEBUG "stli_ecppciinit(brdp=%x)\n", (int) brdp);
3570 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
3572 outb(0, (brdp->iobase + ECP_PCICONFR));
3576 /*****************************************************************************/
3578 static char *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3584 printk(KERN_DEBUG "stli_ecppcigetmemptr(brdp=%x,offset=%x,line=%d)\n",
3585 (int) brdp, (int) offset, line);
3588 if (offset > brdp->memsize) {
3589 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3590 "range at line=%d(%d), board=%d\n",
3591 (int) offset, line, __LINE__, brdp->brdnr);
3595 ptr = brdp->membase + (offset % ECP_PCIPAGESIZE);
3596 val = (offset / ECP_PCIPAGESIZE) << 1;
3598 outb(val, (brdp->iobase + ECP_PCICONFR));
3602 /*****************************************************************************/
3604 static void stli_ecppcireset(stlibrd_t *brdp)
3606 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
3608 outb(0, (brdp->iobase + ECP_PCICONFR));
3612 /*****************************************************************************/
3615 * The following routines act on ONboards.
3618 static void stli_onbinit(stlibrd_t *brdp)
3620 unsigned long memconf;
3623 printk(KERN_DEBUG "stli_onbinit(brdp=%d)\n", (int) brdp);
3626 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
3628 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
3631 memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT;
3632 outb(memconf, (brdp->iobase + ONB_ATMEMAR));
3633 outb(0x1, brdp->iobase);
3637 /*****************************************************************************/
3639 static void stli_onbenable(stlibrd_t *brdp)
3642 printk(KERN_DEBUG "stli_onbenable(brdp=%x)\n", (int) brdp);
3644 outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR));
3647 /*****************************************************************************/
3649 static void stli_onbdisable(stlibrd_t *brdp)
3652 printk(KERN_DEBUG "stli_onbdisable(brdp=%x)\n", (int) brdp);
3654 outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR));
3657 /*****************************************************************************/
3659 static char *stli_onbgetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3664 printk(KERN_DEBUG "stli_onbgetmemptr(brdp=%x,offset=%x)\n", (int) brdp,
3668 if (offset > brdp->memsize) {
3669 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3670 "range at line=%d(%d), brd=%d\n",
3671 (int) offset, line, __LINE__, brdp->brdnr);
3674 ptr = brdp->membase + (offset % ONB_ATPAGESIZE);
3679 /*****************************************************************************/
3681 static void stli_onbreset(stlibrd_t *brdp)
3685 printk(KERN_DEBUG "stli_onbreset(brdp=%x)\n", (int) brdp);
3688 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
3690 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
3694 /*****************************************************************************/
3697 * The following routines act on ONboard EISA.
3700 static void stli_onbeinit(stlibrd_t *brdp)
3702 unsigned long memconf;
3705 printk(KERN_DEBUG "stli_onbeinit(brdp=%d)\n", (int) brdp);
3708 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
3709 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3711 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3714 memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL;
3715 outb(memconf, (brdp->iobase + ONB_EIMEMARL));
3716 memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH;
3717 outb(memconf, (brdp->iobase + ONB_EIMEMARH));
3718 outb(0x1, brdp->iobase);
3722 /*****************************************************************************/
3724 static void stli_onbeenable(stlibrd_t *brdp)
3727 printk(KERN_DEBUG "stli_onbeenable(brdp=%x)\n", (int) brdp);
3729 outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR));
3732 /*****************************************************************************/
3734 static void stli_onbedisable(stlibrd_t *brdp)
3737 printk(KERN_DEBUG "stli_onbedisable(brdp=%x)\n", (int) brdp);
3739 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3742 /*****************************************************************************/
3744 static char *stli_onbegetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3750 printk(KERN_DEBUG "stli_onbegetmemptr(brdp=%x,offset=%x,line=%d)\n",
3751 (int) brdp, (int) offset, line);
3754 if (offset > brdp->memsize) {
3755 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3756 "range at line=%d(%d), brd=%d\n",
3757 (int) offset, line, __LINE__, brdp->brdnr);
3761 ptr = brdp->membase + (offset % ONB_EIPAGESIZE);
3762 if (offset < ONB_EIPAGESIZE)
3765 val = ONB_EIENABLE | 0x40;
3767 outb(val, (brdp->iobase + ONB_EICONFR));
3771 /*****************************************************************************/
3773 static void stli_onbereset(stlibrd_t *brdp)
3777 printk(KERN_ERR "stli_onbereset(brdp=%x)\n", (int) brdp);
3780 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3782 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3786 /*****************************************************************************/
3789 * The following routines act on Brumby boards.
3792 static void stli_bbyinit(stlibrd_t *brdp)
3796 printk(KERN_ERR "stli_bbyinit(brdp=%d)\n", (int) brdp);
3799 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
3801 outb(0, (brdp->iobase + BBY_ATCONFR));
3803 outb(0x1, brdp->iobase);
3807 /*****************************************************************************/
3809 static char *stli_bbygetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3815 printk(KERN_ERR "stli_bbygetmemptr(brdp=%x,offset=%x)\n", (int) brdp,
3819 if (offset > brdp->memsize) {
3820 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3821 "range at line=%d(%d), brd=%d\n",
3822 (int) offset, line, __LINE__, brdp->brdnr);
3826 ptr = brdp->membase + (offset % BBY_PAGESIZE);
3827 val = (unsigned char) (offset / BBY_PAGESIZE);
3829 outb(val, (brdp->iobase + BBY_ATCONFR));
3833 /*****************************************************************************/
3835 static void stli_bbyreset(stlibrd_t *brdp)
3839 printk(KERN_DEBUG "stli_bbyreset(brdp=%x)\n", (int) brdp);
3842 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
3844 outb(0, (brdp->iobase + BBY_ATCONFR));
3848 /*****************************************************************************/
3851 * The following routines act on original old Stallion boards.
3854 static void stli_stalinit(stlibrd_t *brdp)
3858 printk(KERN_DEBUG "stli_stalinit(brdp=%d)\n", (int) brdp);
3861 outb(0x1, brdp->iobase);
3865 /*****************************************************************************/
3867 static char *stli_stalgetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3872 printk(KERN_DEBUG "stli_stalgetmemptr(brdp=%x,offset=%x)\n", (int) brdp,
3876 if (offset > brdp->memsize) {
3877 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3878 "range at line=%d(%d), brd=%d\n",
3879 (int) offset, line, __LINE__, brdp->brdnr);
3882 ptr = brdp->membase + (offset % STAL_PAGESIZE);
3887 /*****************************************************************************/
3889 static void stli_stalreset(stlibrd_t *brdp)
3891 volatile unsigned long *vecp;
3894 printk(KERN_DEBUG "stli_stalreset(brdp=%x)\n", (int) brdp);
3897 vecp = (volatile unsigned long *) (brdp->membase + 0x30);
3899 outb(0, brdp->iobase);
3903 /*****************************************************************************/
3906 * Try to find an ECP board and initialize it. This handles only ECP
3910 static int stli_initecp(stlibrd_t *brdp)
3914 unsigned int status, nxtid;
3916 int panelnr, nrports;
3919 printk(KERN_DEBUG "stli_initecp(brdp=%x)\n", (int) brdp);
3922 if (!request_region(brdp->iobase, brdp->iosize, "istallion"))
3925 if ((brdp->iobase == 0) || (brdp->memaddr == 0))
3927 release_region(brdp->iobase, brdp->iosize);
3931 brdp->iosize = ECP_IOSIZE;
3934 * Based on the specific board type setup the common vars to access
3935 * and enable shared memory. Set all board specific information now
3938 switch (brdp->brdtype) {
3940 brdp->membase = (void *) brdp->memaddr;
3941 brdp->memsize = ECP_MEMSIZE;
3942 brdp->pagesize = ECP_ATPAGESIZE;
3943 brdp->init = stli_ecpinit;
3944 brdp->enable = stli_ecpenable;
3945 brdp->reenable = stli_ecpenable;
3946 brdp->disable = stli_ecpdisable;
3947 brdp->getmemptr = stli_ecpgetmemptr;
3948 brdp->intr = stli_ecpintr;
3949 brdp->reset = stli_ecpreset;
3950 name = "serial(EC8/64)";
3954 brdp->membase = (void *) brdp->memaddr;
3955 brdp->memsize = ECP_MEMSIZE;
3956 brdp->pagesize = ECP_EIPAGESIZE;
3957 brdp->init = stli_ecpeiinit;
3958 brdp->enable = stli_ecpeienable;
3959 brdp->reenable = stli_ecpeienable;
3960 brdp->disable = stli_ecpeidisable;
3961 brdp->getmemptr = stli_ecpeigetmemptr;
3962 brdp->intr = stli_ecpintr;
3963 brdp->reset = stli_ecpeireset;
3964 name = "serial(EC8/64-EI)";
3968 brdp->membase = (void *) brdp->memaddr;
3969 brdp->memsize = ECP_MEMSIZE;
3970 brdp->pagesize = ECP_MCPAGESIZE;
3972 brdp->enable = stli_ecpmcenable;
3973 brdp->reenable = stli_ecpmcenable;
3974 brdp->disable = stli_ecpmcdisable;
3975 brdp->getmemptr = stli_ecpmcgetmemptr;
3976 brdp->intr = stli_ecpintr;
3977 brdp->reset = stli_ecpmcreset;
3978 name = "serial(EC8/64-MCA)";
3982 brdp->membase = (void *) brdp->memaddr;
3983 brdp->memsize = ECP_PCIMEMSIZE;
3984 brdp->pagesize = ECP_PCIPAGESIZE;
3985 brdp->init = stli_ecppciinit;
3986 brdp->enable = NULL;
3987 brdp->reenable = NULL;
3988 brdp->disable = NULL;
3989 brdp->getmemptr = stli_ecppcigetmemptr;
3990 brdp->intr = stli_ecpintr;
3991 brdp->reset = stli_ecppcireset;
3992 name = "serial(EC/RA-PCI)";
3996 release_region(brdp->iobase, brdp->iosize);
4001 * The per-board operations structure is all set up, so now let's go
4002 * and get the board operational. Firstly initialize board configuration
4003 * registers. Set the memory mapping info so we can get at the boards
4008 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
4009 if (brdp->membase == (void *) NULL)
4011 release_region(brdp->iobase, brdp->iosize);
4016 * Now that all specific code is set up, enable the shared memory and
4017 * look for the a signature area that will tell us exactly what board
4018 * this is, and what it is connected to it.
4021 sigsp = (cdkecpsig_t *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
4022 memcpy(&sig, sigsp, sizeof(cdkecpsig_t));
4026 printk("%s(%d): sig-> magic=%x rom=%x panel=%x,%x,%x,%x,%x,%x,%x,%x\n",
4027 __FILE__, __LINE__, (int) sig.magic, sig.romver, sig.panelid[0],
4028 (int) sig.panelid[1], (int) sig.panelid[2],
4029 (int) sig.panelid[3], (int) sig.panelid[4],
4030 (int) sig.panelid[5], (int) sig.panelid[6],
4031 (int) sig.panelid[7]);
4034 if (sig.magic != ECP_MAGIC)
4036 release_region(brdp->iobase, brdp->iosize);
4041 * Scan through the signature looking at the panels connected to the
4042 * board. Calculate the total number of ports as we go.
4044 for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) {
4045 status = sig.panelid[nxtid];
4046 if ((status & ECH_PNLIDMASK) != nxtid)
4049 brdp->panelids[panelnr] = status;
4050 nrports = (status & ECH_PNL16PORT) ? 16 : 8;
4051 if ((nrports == 16) && ((status & ECH_PNLXPID) == 0))
4053 brdp->panels[panelnr] = nrports;
4054 brdp->nrports += nrports;
4060 brdp->state |= BST_FOUND;
4064 /*****************************************************************************/
4067 * Try to find an ONboard, Brumby or Stallion board and initialize it.
4068 * This handles only these board types.
4071 static int stli_initonb(stlibrd_t *brdp)
4079 printk(KERN_DEBUG "stli_initonb(brdp=%x)\n", (int) brdp);
4083 * Do a basic sanity check on the IO and memory addresses.
4085 if ((brdp->iobase == 0) || (brdp->memaddr == 0))
4088 brdp->iosize = ONB_IOSIZE;
4090 if (!request_region(brdp->iobase, brdp->iosize, "istallion"))
4094 * Based on the specific board type setup the common vars to access
4095 * and enable shared memory. Set all board specific information now
4098 switch (brdp->brdtype) {
4102 case BRD_ONBOARD2_32:
4104 brdp->membase = (void *) brdp->memaddr;
4105 brdp->memsize = ONB_MEMSIZE;
4106 brdp->pagesize = ONB_ATPAGESIZE;
4107 brdp->init = stli_onbinit;
4108 brdp->enable = stli_onbenable;
4109 brdp->reenable = stli_onbenable;
4110 brdp->disable = stli_onbdisable;
4111 brdp->getmemptr = stli_onbgetmemptr;
4112 brdp->intr = stli_ecpintr;
4113 brdp->reset = stli_onbreset;
4114 if (brdp->memaddr > 0x100000)
4115 brdp->enabval = ONB_MEMENABHI;
4117 brdp->enabval = ONB_MEMENABLO;
4118 name = "serial(ONBoard)";
4122 brdp->membase = (void *) brdp->memaddr;
4123 brdp->memsize = ONB_EIMEMSIZE;
4124 brdp->pagesize = ONB_EIPAGESIZE;
4125 brdp->init = stli_onbeinit;
4126 brdp->enable = stli_onbeenable;
4127 brdp->reenable = stli_onbeenable;
4128 brdp->disable = stli_onbedisable;
4129 brdp->getmemptr = stli_onbegetmemptr;
4130 brdp->intr = stli_ecpintr;
4131 brdp->reset = stli_onbereset;
4132 name = "serial(ONBoard/E)";
4138 brdp->membase = (void *) brdp->memaddr;
4139 brdp->memsize = BBY_MEMSIZE;
4140 brdp->pagesize = BBY_PAGESIZE;
4141 brdp->init = stli_bbyinit;
4142 brdp->enable = NULL;
4143 brdp->reenable = NULL;
4144 brdp->disable = NULL;
4145 brdp->getmemptr = stli_bbygetmemptr;
4146 brdp->intr = stli_ecpintr;
4147 brdp->reset = stli_bbyreset;
4148 name = "serial(Brumby)";
4152 brdp->membase = (void *) brdp->memaddr;
4153 brdp->memsize = STAL_MEMSIZE;
4154 brdp->pagesize = STAL_PAGESIZE;
4155 brdp->init = stli_stalinit;
4156 brdp->enable = NULL;
4157 brdp->reenable = NULL;
4158 brdp->disable = NULL;
4159 brdp->getmemptr = stli_stalgetmemptr;
4160 brdp->intr = stli_ecpintr;
4161 brdp->reset = stli_stalreset;
4162 name = "serial(Stallion)";
4166 release_region(brdp->iobase, brdp->iosize);
4171 * The per-board operations structure is all set up, so now let's go
4172 * and get the board operational. Firstly initialize board configuration
4173 * registers. Set the memory mapping info so we can get at the boards
4178 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
4179 if (brdp->membase == (void *) NULL)
4181 release_region(brdp->iobase, brdp->iosize);
4186 * Now that all specific code is set up, enable the shared memory and
4187 * look for the a signature area that will tell us exactly what board
4188 * this is, and how many ports.
4191 sigsp = (cdkonbsig_t *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
4192 memcpy(&sig, sigsp, sizeof(cdkonbsig_t));
4196 printk("%s(%d): sig-> magic=%x:%x:%x:%x romver=%x amask=%x:%x:%x\n",
4197 __FILE__, __LINE__, sig.magic0, sig.magic1, sig.magic2,
4198 sig.magic3, sig.romver, sig.amask0, sig.amask1, sig.amask2);
4201 if ((sig.magic0 != ONB_MAGIC0) || (sig.magic1 != ONB_MAGIC1) ||
4202 (sig.magic2 != ONB_MAGIC2) || (sig.magic3 != ONB_MAGIC3))
4204 release_region(brdp->iobase, brdp->iosize);
4209 * Scan through the signature alive mask and calculate how many ports
4210 * there are on this board.
4216 for (i = 0; (i < 16); i++) {
4217 if (((sig.amask0 << i) & 0x8000) == 0)
4222 brdp->panels[0] = brdp->nrports;
4225 brdp->state |= BST_FOUND;
4229 /*****************************************************************************/
4232 * Start up a running board. This routine is only called after the
4233 * code has been down loaded to the board and is operational. It will
4234 * read in the memory map, and get the show on the road...
4237 static int stli_startbrd(stlibrd_t *brdp)
4239 volatile cdkhdr_t *hdrp;
4240 volatile cdkmem_t *memp;
4241 volatile cdkasy_t *ap;
4242 unsigned long flags;
4244 int portnr, nrdevs, i, rc;
4247 printk(KERN_DEBUG "stli_startbrd(brdp=%x)\n", (int) brdp);
4255 hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
4256 nrdevs = hdrp->nrdevs;
4259 printk("%s(%d): CDK version %d.%d.%d --> "
4260 "nrdevs=%d memp=%x hostp=%x slavep=%x\n",
4261 __FILE__, __LINE__, hdrp->ver_release, hdrp->ver_modification,
4262 hdrp->ver_fix, nrdevs, (int) hdrp->memp, (int) hdrp->hostp,
4263 (int) hdrp->slavep);
4266 if (nrdevs < (brdp->nrports + 1)) {
4267 printk(KERN_ERR "STALLION: slave failed to allocate memory for "
4268 "all devices, devices=%d\n", nrdevs);
4269 brdp->nrports = nrdevs - 1;
4271 brdp->nrdevs = nrdevs;
4272 brdp->hostoffset = hdrp->hostp - CDK_CDKADDR;
4273 brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR;
4274 brdp->bitsize = (nrdevs + 7) / 8;
4275 memp = (volatile cdkmem_t *) hdrp->memp;
4276 if (((unsigned long) memp) > brdp->memsize) {
4277 printk(KERN_ERR "STALLION: corrupted shared memory region?\n");
4279 goto stli_donestartup;
4281 memp = (volatile cdkmem_t *) EBRDGETMEMPTR(brdp, (unsigned long) memp);
4282 if (memp->dtype != TYP_ASYNCTRL) {
4283 printk(KERN_ERR "STALLION: no slave control device found\n");
4284 goto stli_donestartup;
4289 * Cycle through memory allocation of each port. We are guaranteed to
4290 * have all ports inside the first page of slave window, so no need to
4291 * change pages while reading memory map.
4293 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) {
4294 if (memp->dtype != TYP_ASYNC)
4296 portp = brdp->ports[portnr];
4297 if (portp == (stliport_t *) NULL)
4300 portp->addr = memp->offset;
4301 portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs));
4302 portp->portidx = (unsigned char) (i / 8);
4303 portp->portbit = (unsigned char) (0x1 << (i % 8));
4306 hdrp->slavereq = 0xff;
4309 * For each port setup a local copy of the RX and TX buffer offsets
4310 * and sizes. We do this separate from the above, because we need to
4311 * move the shared memory page...
4313 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) {
4314 portp = brdp->ports[portnr];
4315 if (portp == (stliport_t *) NULL)
4317 if (portp->addr == 0)
4319 ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr);
4320 if (ap != (volatile cdkasy_t *) NULL) {
4321 portp->rxsize = ap->rxq.size;
4322 portp->txsize = ap->txq.size;
4323 portp->rxoffset = ap->rxq.offset;
4324 portp->txoffset = ap->txq.offset;
4330 restore_flags(flags);
4333 brdp->state |= BST_STARTED;
4335 if (! stli_timeron) {
4337 stli_timerlist.expires = STLI_TIMEOUT;
4338 add_timer(&stli_timerlist);
4344 /*****************************************************************************/
4347 * Probe and initialize the specified board.
4350 static int __init stli_brdinit(stlibrd_t *brdp)
4353 printk(KERN_DEBUG "stli_brdinit(brdp=%x)\n", (int) brdp);
4356 stli_brds[brdp->brdnr] = brdp;
4358 switch (brdp->brdtype) {
4369 case BRD_ONBOARD2_32:
4381 printk(KERN_ERR "STALLION: %s board type not supported in "
4382 "this driver\n", stli_brdnames[brdp->brdtype]);
4385 printk(KERN_ERR "STALLION: board=%d is unknown board "
4386 "type=%d\n", brdp->brdnr, brdp->brdtype);
4390 if ((brdp->state & BST_FOUND) == 0) {
4391 printk(KERN_ERR "STALLION: %s board not found, board=%d "
4393 stli_brdnames[brdp->brdtype], brdp->brdnr,
4394 brdp->iobase, (int) brdp->memaddr);
4398 stli_initports(brdp);
4399 printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x "
4400 "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype],
4401 brdp->brdnr, brdp->iobase, (int) brdp->memaddr,
4402 brdp->nrpanels, brdp->nrports);
4406 /*****************************************************************************/
4409 * Probe around trying to find where the EISA boards shared memory
4410 * might be. This is a bit if hack, but it is the best we can do.
4413 static int stli_eisamemprobe(stlibrd_t *brdp)
4415 cdkecpsig_t ecpsig, *ecpsigp;
4416 cdkonbsig_t onbsig, *onbsigp;
4420 printk(KERN_DEBUG "stli_eisamemprobe(brdp=%x)\n", (int) brdp);
4424 * First up we reset the board, to get it into a known state. There
4425 * is only 2 board types here we need to worry about. Don;t use the
4426 * standard board init routine here, it programs up the shared
4427 * memory address, and we don't know it yet...
4429 if (brdp->brdtype == BRD_ECPE) {
4430 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
4431 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
4433 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
4435 stli_ecpeienable(brdp);
4436 } else if (brdp->brdtype == BRD_ONBOARDE) {
4437 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
4438 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
4440 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
4442 outb(0x1, brdp->iobase);
4444 stli_onbeenable(brdp);
4450 brdp->memsize = ECP_MEMSIZE;
4453 * Board shared memory is enabled, so now we have a poke around and
4454 * see if we can find it.
4456 for (i = 0; (i < stli_eisamempsize); i++) {
4457 brdp->memaddr = stli_eisamemprobeaddrs[i];
4458 brdp->membase = (void *) brdp->memaddr;
4459 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
4460 if (brdp->membase == (void *) NULL)
4463 if (brdp->brdtype == BRD_ECPE) {
4464 ecpsigp = (cdkecpsig_t *) stli_ecpeigetmemptr(brdp,
4465 CDK_SIGADDR, __LINE__);
4466 memcpy(&ecpsig, ecpsigp, sizeof(cdkecpsig_t));
4467 if (ecpsig.magic == ECP_MAGIC)
4470 onbsigp = (cdkonbsig_t *) stli_onbegetmemptr(brdp,
4471 CDK_SIGADDR, __LINE__);
4472 memcpy(&onbsig, onbsigp, sizeof(cdkonbsig_t));
4473 if ((onbsig.magic0 == ONB_MAGIC0) &&
4474 (onbsig.magic1 == ONB_MAGIC1) &&
4475 (onbsig.magic2 == ONB_MAGIC2) &&
4476 (onbsig.magic3 == ONB_MAGIC3))
4480 iounmap(brdp->membase);
4486 * Regardless of whether we found the shared memory or not we must
4487 * disable the region. After that return success or failure.
4489 if (brdp->brdtype == BRD_ECPE)
4490 stli_ecpeidisable(brdp);
4492 stli_onbedisable(brdp);
4496 brdp->membase = NULL;
4497 printk(KERN_ERR "STALLION: failed to probe shared memory "
4498 "region for %s in EISA slot=%d\n",
4499 stli_brdnames[brdp->brdtype], (brdp->iobase >> 12));
4505 static int stli_getbrdnr(void)
4509 for (i = 0; i < STL_MAXBRDS; i++) {
4510 if (!stli_brds[i]) {
4511 if (i >= stli_nrbrds)
4512 stli_nrbrds = i + 1;
4519 /*****************************************************************************/
4522 * Probe around and try to find any EISA boards in system. The biggest
4523 * problem here is finding out what memory address is associated with
4524 * an EISA board after it is found. The registers of the ECPE and
4525 * ONboardE are not readable - so we can't read them from there. We
4526 * don't have access to the EISA CMOS (or EISA BIOS) so we don't
4527 * actually have any way to find out the real value. The best we can
4528 * do is go probing around in the usual places hoping we can find it.
4531 static int stli_findeisabrds(void)
4534 unsigned int iobase, eid;
4538 printk(KERN_DEBUG "stli_findeisabrds()\n");
4542 * Firstly check if this is an EISA system. Do this by probing for
4543 * the system board EISA ID. If this is not an EISA system then
4544 * don't bother going any further!
4547 if (inb(0xc80) == 0xff)
4551 * Looks like an EISA system, so go searching for EISA boards.
4553 for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) {
4554 outb(0xff, (iobase + 0xc80));
4555 eid = inb(iobase + 0xc80);
4556 eid |= inb(iobase + 0xc81) << 8;
4557 if (eid != STL_EISAID)
4561 * We have found a board. Need to check if this board was
4562 * statically configured already (just in case!).
4564 for (i = 0; (i < STL_MAXBRDS); i++) {
4565 brdp = stli_brds[i];
4566 if (brdp == (stlibrd_t *) NULL)
4568 if (brdp->iobase == iobase)
4571 if (i < STL_MAXBRDS)
4575 * We have found a Stallion board and it is not configured already.
4576 * Allocate a board structure and initialize it.
4578 if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL)
4580 if ((brdp->brdnr = stli_getbrdnr()) < 0)
4582 eid = inb(iobase + 0xc82);
4583 if (eid == ECP_EISAID)
4584 brdp->brdtype = BRD_ECPE;
4585 else if (eid == ONB_EISAID)
4586 brdp->brdtype = BRD_ONBOARDE;
4588 brdp->brdtype = BRD_UNKNOWN;
4589 brdp->iobase = iobase;
4590 outb(0x1, (iobase + 0xc84));
4591 if (stli_eisamemprobe(brdp))
4592 outb(0, (iobase + 0xc84));
4599 /*****************************************************************************/
4602 * Find the next available board number that is free.
4605 /*****************************************************************************/
4610 * We have a Stallion board. Allocate a board structure and
4611 * initialize it. Read its IO and MEMORY resources from PCI
4612 * configuration space.
4615 static int stli_initpcibrd(int brdtype, struct pci_dev *devp)
4620 printk(KERN_DEBUG "stli_initpcibrd(brdtype=%d,busnr=%x,devnr=%x)\n",
4621 brdtype, dev->bus->number, dev->devfn);
4624 if (pci_enable_device(devp))
4626 if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL)
4628 if ((brdp->brdnr = stli_getbrdnr()) < 0) {
4629 printk(KERN_INFO "STALLION: too many boards found, "
4630 "maximum supported %d\n", STL_MAXBRDS);
4633 brdp->brdtype = brdtype;
4636 printk(KERN_DEBUG "%s(%d): BAR[]=%lx,%lx,%lx,%lx\n", __FILE__, __LINE__,
4637 pci_resource_start(devp, 0),
4638 pci_resource_start(devp, 1),
4639 pci_resource_start(devp, 2),
4640 pci_resource_start(devp, 3));
4644 * We have all resources from the board, so lets setup the actual
4645 * board structure now.
4647 brdp->iobase = pci_resource_start(devp, 3);
4648 brdp->memaddr = pci_resource_start(devp, 2);
4654 /*****************************************************************************/
4657 * Find all Stallion PCI boards that might be installed. Initialize each
4658 * one as it is found.
4661 static int stli_findpcibrds(void)
4663 struct pci_dev *dev = NULL;
4667 printk("stli_findpcibrds()\n");
4670 while ((dev = pci_find_device(PCI_VENDOR_ID_STALLION,
4671 PCI_DEVICE_ID_ECRA, dev))) {
4672 if ((rc = stli_initpcibrd(BRD_ECPPCI, dev)))
4681 /*****************************************************************************/
4684 * Allocate a new board structure. Fill out the basic info in it.
4687 static stlibrd_t *stli_allocbrd(void)
4691 brdp = (stlibrd_t *) stli_memalloc(sizeof(stlibrd_t));
4692 if (brdp == (stlibrd_t *) NULL) {
4693 printk(KERN_ERR "STALLION: failed to allocate memory "
4694 "(size=%d)\n", sizeof(stlibrd_t));
4695 return((stlibrd_t *) NULL);
4698 memset(brdp, 0, sizeof(stlibrd_t));
4699 brdp->magic = STLI_BOARDMAGIC;
4703 /*****************************************************************************/
4706 * Scan through all the boards in the configuration and see what we
4710 static int stli_initbrds(void)
4712 stlibrd_t *brdp, *nxtbrdp;
4717 printk(KERN_DEBUG "stli_initbrds()\n");
4720 if (stli_nrbrds > STL_MAXBRDS) {
4721 printk(KERN_INFO "STALLION: too many boards in configuration "
4722 "table, truncating to %d\n", STL_MAXBRDS);
4723 stli_nrbrds = STL_MAXBRDS;
4727 * Firstly scan the list of static boards configured. Allocate
4728 * resources and initialize the boards as found. If this is a
4729 * module then let the module args override static configuration.
4731 for (i = 0; (i < stli_nrbrds); i++) {
4732 confp = &stli_brdconf[i];
4734 stli_parsebrd(confp, stli_brdsp[i]);
4736 if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL)
4739 brdp->brdtype = confp->brdtype;
4740 brdp->iobase = confp->ioaddr1;
4741 brdp->memaddr = confp->memaddr;
4746 * Static configuration table done, so now use dynamic methods to
4747 * see if any more boards should be configured.
4753 stli_findeisabrds();
4759 * All found boards are initialized. Now for a little optimization, if
4760 * no boards are sharing the "shared memory" regions then we can just
4761 * leave them all enabled. This is in fact the usual case.
4764 if (stli_nrbrds > 1) {
4765 for (i = 0; (i < stli_nrbrds); i++) {
4766 brdp = stli_brds[i];
4767 if (brdp == (stlibrd_t *) NULL)
4769 for (j = i + 1; (j < stli_nrbrds); j++) {
4770 nxtbrdp = stli_brds[j];
4771 if (nxtbrdp == (stlibrd_t *) NULL)
4773 if ((brdp->membase >= nxtbrdp->membase) &&
4774 (brdp->membase <= (nxtbrdp->membase +
4775 nxtbrdp->memsize - 1))) {
4783 if (stli_shared == 0) {
4784 for (i = 0; (i < stli_nrbrds); i++) {
4785 brdp = stli_brds[i];
4786 if (brdp == (stlibrd_t *) NULL)
4788 if (brdp->state & BST_FOUND) {
4790 brdp->enable = NULL;
4791 brdp->disable = NULL;
4799 /*****************************************************************************/
4802 * Code to handle an "staliomem" read operation. This device is the
4803 * contents of the board shared memory. It is used for down loading
4804 * the slave image (and debugging :-)
4807 static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp)
4809 unsigned long flags;
4815 printk(KERN_DEBUG "stli_memread(fp=%x,buf=%x,count=%x,offp=%x)\n",
4816 (int) fp, (int) buf, count, (int) offp);
4819 brdnr = iminor(fp->f_dentry->d_inode);
4820 if (brdnr >= stli_nrbrds)
4822 brdp = stli_brds[brdnr];
4823 if (brdp == (stlibrd_t *) NULL)
4825 if (brdp->state == 0)
4827 if (fp->f_pos >= brdp->memsize)
4830 size = MIN(count, (brdp->memsize - fp->f_pos));
4836 memptr = (void *) EBRDGETMEMPTR(brdp, fp->f_pos);
4837 n = MIN(size, (brdp->pagesize - (((unsigned long) fp->f_pos) % brdp->pagesize)));
4838 if (copy_to_user(buf, memptr, n)) {
4848 restore_flags(flags);
4853 /*****************************************************************************/
4856 * Code to handle an "staliomem" write operation. This device is the
4857 * contents of the board shared memory. It is used for down loading
4858 * the slave image (and debugging :-)
4861 static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp)
4863 unsigned long flags;
4870 printk(KERN_DEBUG "stli_memwrite(fp=%x,buf=%x,count=%x,offp=%x)\n",
4871 (int) fp, (int) buf, count, (int) offp);
4874 brdnr = iminor(fp->f_dentry->d_inode);
4875 if (brdnr >= stli_nrbrds)
4877 brdp = stli_brds[brdnr];
4878 if (brdp == (stlibrd_t *) NULL)
4880 if (brdp->state == 0)
4882 if (fp->f_pos >= brdp->memsize)
4885 chbuf = (char __user *) buf;
4886 size = MIN(count, (brdp->memsize - fp->f_pos));
4892 memptr = (void *) EBRDGETMEMPTR(brdp, fp->f_pos);
4893 n = MIN(size, (brdp->pagesize - (((unsigned long) fp->f_pos) % brdp->pagesize)));
4894 if (copy_from_user(memptr, chbuf, n)) {
4904 restore_flags(flags);
4909 /*****************************************************************************/
4912 * Return the board stats structure to user app.
4915 static int stli_getbrdstats(combrd_t __user *bp)
4920 if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t)))
4922 if (stli_brdstats.brd >= STL_MAXBRDS)
4924 brdp = stli_brds[stli_brdstats.brd];
4925 if (brdp == (stlibrd_t *) NULL)
4928 memset(&stli_brdstats, 0, sizeof(combrd_t));
4929 stli_brdstats.brd = brdp->brdnr;
4930 stli_brdstats.type = brdp->brdtype;
4931 stli_brdstats.hwid = 0;
4932 stli_brdstats.state = brdp->state;
4933 stli_brdstats.ioaddr = brdp->iobase;
4934 stli_brdstats.memaddr = brdp->memaddr;
4935 stli_brdstats.nrpanels = brdp->nrpanels;
4936 stli_brdstats.nrports = brdp->nrports;
4937 for (i = 0; (i < brdp->nrpanels); i++) {
4938 stli_brdstats.panels[i].panel = i;
4939 stli_brdstats.panels[i].hwid = brdp->panelids[i];
4940 stli_brdstats.panels[i].nrports = brdp->panels[i];
4943 if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t)))
4948 /*****************************************************************************/
4951 * Resolve the referenced port number into a port struct pointer.
4954 static stliport_t *stli_getport(int brdnr, int panelnr, int portnr)
4959 if ((brdnr < 0) || (brdnr >= STL_MAXBRDS))
4960 return((stliport_t *) NULL);
4961 brdp = stli_brds[brdnr];
4962 if (brdp == (stlibrd_t *) NULL)
4963 return((stliport_t *) NULL);
4964 for (i = 0; (i < panelnr); i++)
4965 portnr += brdp->panels[i];
4966 if ((portnr < 0) || (portnr >= brdp->nrports))
4967 return((stliport_t *) NULL);
4968 return(brdp->ports[portnr]);
4971 /*****************************************************************************/
4974 * Return the port stats structure to user app. A NULL port struct
4975 * pointer passed in means that we need to find out from the app
4976 * what port to get stats for (used through board control device).
4979 static int stli_portcmdstats(stliport_t *portp)
4981 unsigned long flags;
4985 memset(&stli_comstats, 0, sizeof(comstats_t));
4987 if (portp == (stliport_t *) NULL)
4989 brdp = stli_brds[portp->brdnr];
4990 if (brdp == (stlibrd_t *) NULL)
4993 if (brdp->state & BST_STARTED) {
4994 if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS,
4995 &stli_cdkstats, sizeof(asystats_t), 1)) < 0)
4998 memset(&stli_cdkstats, 0, sizeof(asystats_t));
5001 stli_comstats.brd = portp->brdnr;
5002 stli_comstats.panel = portp->panelnr;
5003 stli_comstats.port = portp->portnr;
5004 stli_comstats.state = portp->state;
5005 stli_comstats.flags = portp->flags;
5009 if (portp->tty != (struct tty_struct *) NULL) {
5010 if (portp->tty->driver_data == portp) {
5011 stli_comstats.ttystate = portp->tty->flags;
5012 stli_comstats.rxbuffered = portp->tty->flip.count;
5013 if (portp->tty->termios != (struct termios *) NULL) {
5014 stli_comstats.cflags = portp->tty->termios->c_cflag;
5015 stli_comstats.iflags = portp->tty->termios->c_iflag;
5016 stli_comstats.oflags = portp->tty->termios->c_oflag;
5017 stli_comstats.lflags = portp->tty->termios->c_lflag;
5021 restore_flags(flags);
5023 stli_comstats.txtotal = stli_cdkstats.txchars;
5024 stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover;
5025 stli_comstats.txbuffered = stli_cdkstats.txringq;
5026 stli_comstats.rxbuffered += stli_cdkstats.rxringq;
5027 stli_comstats.rxoverrun = stli_cdkstats.overruns;
5028 stli_comstats.rxparity = stli_cdkstats.parity;
5029 stli_comstats.rxframing = stli_cdkstats.framing;
5030 stli_comstats.rxlost = stli_cdkstats.ringover;
5031 stli_comstats.rxbreaks = stli_cdkstats.rxbreaks;
5032 stli_comstats.txbreaks = stli_cdkstats.txbreaks;
5033 stli_comstats.txxon = stli_cdkstats.txstart;
5034 stli_comstats.txxoff = stli_cdkstats.txstop;
5035 stli_comstats.rxxon = stli_cdkstats.rxstart;
5036 stli_comstats.rxxoff = stli_cdkstats.rxstop;
5037 stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2;
5038 stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff;
5039 stli_comstats.modem = stli_cdkstats.dcdcnt;
5040 stli_comstats.hwid = stli_cdkstats.hwid;
5041 stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals);
5046 /*****************************************************************************/
5049 * Return the port stats structure to user app. A NULL port struct
5050 * pointer passed in means that we need to find out from the app
5051 * what port to get stats for (used through board control device).
5054 static int stli_getportstats(stliport_t *portp, comstats_t __user *cp)
5060 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
5062 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
5063 stli_comstats.port);
5068 brdp = stli_brds[portp->brdnr];
5072 if ((rc = stli_portcmdstats(portp)) < 0)
5075 return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ?
5079 /*****************************************************************************/
5082 * Clear the port stats structure. We also return it zeroed out...
5085 static int stli_clrportstats(stliport_t *portp, comstats_t __user *cp)
5091 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
5093 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
5094 stli_comstats.port);
5099 brdp = stli_brds[portp->brdnr];
5103 if (brdp->state & BST_STARTED) {
5104 if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0)
5108 memset(&stli_comstats, 0, sizeof(comstats_t));
5109 stli_comstats.brd = portp->brdnr;
5110 stli_comstats.panel = portp->panelnr;
5111 stli_comstats.port = portp->portnr;
5113 if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t)))
5118 /*****************************************************************************/
5121 * Return the entire driver ports structure to a user app.
5124 static int stli_getportstruct(stliport_t __user *arg)
5128 if (copy_from_user(&stli_dummyport, arg, sizeof(stliport_t)))
5130 portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr,
5131 stli_dummyport.portnr);
5134 if (copy_to_user(arg, portp, sizeof(stliport_t)))
5139 /*****************************************************************************/
5142 * Return the entire driver board structure to a user app.
5145 static int stli_getbrdstruct(stlibrd_t __user *arg)
5149 if (copy_from_user(&stli_dummybrd, arg, sizeof(stlibrd_t)))
5151 if ((stli_dummybrd.brdnr < 0) || (stli_dummybrd.brdnr >= STL_MAXBRDS))
5153 brdp = stli_brds[stli_dummybrd.brdnr];
5156 if (copy_to_user(arg, brdp, sizeof(stlibrd_t)))
5161 /*****************************************************************************/
5164 * The "staliomem" device is also required to do some special operations on
5165 * the board. We need to be able to send an interrupt to the board,
5166 * reset it, and start/stop it.
5169 static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg)
5172 int brdnr, rc, done;
5173 void __user *argp = (void __user *)arg;
5176 printk(KERN_DEBUG "stli_memioctl(ip=%x,fp=%x,cmd=%x,arg=%x)\n",
5177 (int) ip, (int) fp, cmd, (int) arg);
5181 * First up handle the board independent ioctls.
5187 case COM_GETPORTSTATS:
5188 rc = stli_getportstats(NULL, argp);
5191 case COM_CLRPORTSTATS:
5192 rc = stli_clrportstats(NULL, argp);
5195 case COM_GETBRDSTATS:
5196 rc = stli_getbrdstats(argp);
5200 rc = stli_getportstruct(argp);
5204 rc = stli_getbrdstruct(argp);
5213 * Now handle the board specific ioctls. These all depend on the
5214 * minor number of the device they were called from.
5217 if (brdnr >= STL_MAXBRDS)
5219 brdp = stli_brds[brdnr];
5222 if (brdp->state == 0)
5230 rc = stli_startbrd(brdp);
5233 brdp->state &= ~BST_STARTED;
5236 brdp->state &= ~BST_STARTED;
5238 if (stli_shared == 0) {
5239 if (brdp->reenable != NULL)
5240 (* brdp->reenable)(brdp);
5251 static struct tty_operations stli_ops = {
5253 .close = stli_close,
5254 .write = stli_write,
5255 .put_char = stli_putchar,
5256 .flush_chars = stli_flushchars,
5257 .write_room = stli_writeroom,
5258 .chars_in_buffer = stli_charsinbuffer,
5259 .ioctl = stli_ioctl,
5260 .set_termios = stli_settermios,
5261 .throttle = stli_throttle,
5262 .unthrottle = stli_unthrottle,
5264 .start = stli_start,
5265 .hangup = stli_hangup,
5266 .flush_buffer = stli_flushbuffer,
5267 .break_ctl = stli_breakctl,
5268 .wait_until_sent = stli_waituntilsent,
5269 .send_xchar = stli_sendxchar,
5270 .read_proc = stli_readproc,
5271 .tiocmget = stli_tiocmget,
5272 .tiocmset = stli_tiocmset,
5275 /*****************************************************************************/
5277 int __init stli_init(void)
5280 printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion);
5284 stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS);
5289 * Allocate a temporary write buffer.
5291 stli_tmpwritebuf = (char *) stli_memalloc(STLI_TXBUFSIZE);
5292 if (stli_tmpwritebuf == (char *) NULL)
5293 printk(KERN_ERR "STALLION: failed to allocate memory "
5294 "(size=%d)\n", STLI_TXBUFSIZE);
5295 stli_txcookbuf = stli_memalloc(STLI_TXBUFSIZE);
5296 if (stli_txcookbuf == (char *) NULL)
5297 printk(KERN_ERR "STALLION: failed to allocate memory "
5298 "(size=%d)\n", STLI_TXBUFSIZE);
5301 * Set up a character driver for the shared memory region. We need this
5302 * to down load the slave code image. Also it is a useful debugging tool.
5304 if (register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem))
5305 printk(KERN_ERR "STALLION: failed to register serial memory "
5308 devfs_mk_dir("staliomem");
5309 istallion_class = class_simple_create(THIS_MODULE, "staliomem");
5310 for (i = 0; i < 4; i++) {
5311 devfs_mk_cdev(MKDEV(STL_SIOMEMMAJOR, i),
5312 S_IFCHR | S_IRUSR | S_IWUSR,
5314 class_simple_device_add(istallion_class, MKDEV(STL_SIOMEMMAJOR, i),
5315 NULL, "staliomem%d", i);
5319 * Set up the tty driver structure and register us as a driver.
5321 stli_serial->owner = THIS_MODULE;
5322 stli_serial->driver_name = stli_drvname;
5323 stli_serial->name = stli_serialname;
5324 stli_serial->major = STL_SERIALMAJOR;
5325 stli_serial->minor_start = 0;
5326 stli_serial->type = TTY_DRIVER_TYPE_SERIAL;
5327 stli_serial->subtype = SERIAL_TYPE_NORMAL;
5328 stli_serial->init_termios = stli_deftermios;
5329 stli_serial->flags = TTY_DRIVER_REAL_RAW;
5330 tty_set_operations(stli_serial, &stli_ops);
5332 if (tty_register_driver(stli_serial)) {
5333 put_tty_driver(stli_serial);
5334 printk(KERN_ERR "STALLION: failed to register serial driver\n");
5340 /*****************************************************************************/