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/module.h>
30 #include <linux/slab.h>
31 #include <linux/interrupt.h>
32 #include <linux/tty.h>
33 #include <linux/tty_flip.h>
34 #include <linux/serial.h>
35 #include <linux/cdk.h>
36 #include <linux/comstats.h>
37 #include <linux/istallion.h>
38 #include <linux/ioport.h>
39 #include <linux/delay.h>
40 #include <linux/init.h>
41 #include <linux/device.h>
42 #include <linux/wait.h>
43 #include <linux/eisa.h>
46 #include <asm/uaccess.h>
48 #include <linux/pci.h>
50 /*****************************************************************************/
53 * Define different board types. Not all of the following board types
54 * are supported by this driver. But I will use the standard "assigned"
55 * board numbers. Currently supported boards are abbreviated as:
56 * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and
60 #define BRD_STALLION 1
62 #define BRD_ONBOARD2 3
65 #define BRD_BRUMBY16 6
66 #define BRD_ONBOARDE 7
67 #define BRD_ONBOARD32 9
68 #define BRD_ONBOARD2_32 10
69 #define BRD_ONBOARDRS 11
77 #define BRD_ECH64PCI 27
78 #define BRD_EASYIOPCI 28
81 #define BRD_BRUMBY BRD_BRUMBY4
84 * Define a configuration structure to hold the board configuration.
85 * Need to set this up in the code (for now) with the boards that are
86 * to be configured into the system. This is what needs to be modified
87 * when adding/removing/modifying boards. Each line entry in the
88 * stli_brdconf[] array is a board. Each line contains io/irq/memory
89 * ranges for that board (as well as what type of board it is).
91 * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },
92 * This line will configure an EasyConnection 8/64 at io address 2a0,
93 * and shared memory address of cc000. Multiple EasyConnection 8/64
94 * boards can share the same shared memory address space. No interrupt
95 * is required for this board type.
97 * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 },
98 * This line will configure an EasyConnection 8/64 EISA in slot 5 and
99 * shared memory address of 0x80000000 (2 GByte). Multiple
100 * EasyConnection 8/64 EISA boards can share the same shared memory
101 * address space. No interrupt is required for this board type.
103 * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 },
104 * This line will configure an ONboard (ISA type) at io address 240,
105 * and shared memory address of d0000. Multiple ONboards can share
106 * the same shared memory address space. No interrupt required.
108 * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 },
109 * This line will configure a Brumby board (any number of ports!) at
110 * io address 360 and shared memory address of c8000. All Brumby boards
111 * configured into a system must have their own separate io and memory
112 * addresses. No interrupt is required.
114 * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 },
115 * This line will configure an original Stallion board at io address 330
116 * and shared memory address d0000 (this would only be valid for a "V4.0"
117 * or Rev.O Stallion board). All Stallion boards configured into the
118 * system must have their own separate io and memory addresses. No
119 * interrupt is required.
126 unsigned long memaddr;
131 static stlconf_t stli_brdconf[] = {
132 /*{ BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },*/
135 static int stli_nrbrds = ARRAY_SIZE(stli_brdconf);
137 /* stli_lock must NOT be taken holding brd_lock */
138 static spinlock_t stli_lock; /* TTY logic lock */
139 static spinlock_t brd_lock; /* Board logic lock */
142 * There is some experimental EISA board detection code in this driver.
143 * By default it is disabled, but for those that want to try it out,
144 * then set the define below to be 1.
146 #define STLI_EISAPROBE 0
148 /*****************************************************************************/
151 * Define some important driver characteristics. Device major numbers
152 * allocated as per Linux Device Registry.
154 #ifndef STL_SIOMEMMAJOR
155 #define STL_SIOMEMMAJOR 28
157 #ifndef STL_SERIALMAJOR
158 #define STL_SERIALMAJOR 24
160 #ifndef STL_CALLOUTMAJOR
161 #define STL_CALLOUTMAJOR 25
164 /*****************************************************************************/
167 * Define our local driver identity first. Set up stuff to deal with
168 * all the local structures required by a serial tty driver.
170 static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver";
171 static char *stli_drvname = "istallion";
172 static char *stli_drvversion = "5.6.0";
173 static char *stli_serialname = "ttyE";
175 static struct tty_driver *stli_serial;
178 #define STLI_TXBUFSIZE 4096
181 * Use a fast local buffer for cooked characters. Typically a whole
182 * bunch of cooked characters come in for a port, 1 at a time. So we
183 * save those up into a local buffer, then write out the whole lot
184 * with a large memcpy. Just use 1 buffer for all ports, since its
185 * use it is only need for short periods of time by each port.
187 static char *stli_txcookbuf;
188 static int stli_txcooksize;
189 static int stli_txcookrealsize;
190 static struct tty_struct *stli_txcooktty;
193 * Define a local default termios struct. All ports will be created
194 * with this termios initially. Basically all it defines is a raw port
195 * at 9600 baud, 8 data bits, no parity, 1 stop bit.
197 static struct ktermios stli_deftermios = {
198 .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL),
205 * Define global stats structures. Not used often, and can be
206 * re-used for each stats call.
208 static comstats_t stli_comstats;
209 static combrd_t stli_brdstats;
210 static asystats_t stli_cdkstats;
211 static stlibrd_t stli_dummybrd;
212 static stliport_t stli_dummyport;
214 /*****************************************************************************/
216 static stlibrd_t *stli_brds[STL_MAXBRDS];
218 static int stli_shared;
221 * Per board state flags. Used with the state field of the board struct.
222 * Not really much here... All we need to do is keep track of whether
223 * the board has been detected, and whether it is actually running a slave
226 #define BST_FOUND 0x1
227 #define BST_STARTED 0x2
230 * Define the set of port state flags. These are marked for internal
231 * state purposes only, usually to do with the state of communications
232 * with the slave. Most of them need to be updated atomically, so always
233 * use the bit setting operations (unless protected by cli/sti).
235 #define ST_INITIALIZING 1
241 #define ST_DOFLUSHRX 7
242 #define ST_DOFLUSHTX 8
245 #define ST_GETSIGS 11
248 * Define an array of board names as printable strings. Handy for
249 * referencing boards when printing trace and stuff.
251 static char *stli_brdnames[] = {
284 /*****************************************************************************/
287 * Define some string labels for arguments passed from the module
288 * load line. These allow for easy board definitions, and easy
289 * modification of the io, memory and irq resoucres.
292 static char *board0[8];
293 static char *board1[8];
294 static char *board2[8];
295 static char *board3[8];
297 static char **stli_brdsp[] = {
305 * Define a set of common board names, and types. This is used to
306 * parse any module arguments.
309 typedef struct stlibrdtype {
314 static stlibrdtype_t stli_brdstr[] = {
315 { "stallion", BRD_STALLION },
316 { "1", BRD_STALLION },
317 { "brumby", BRD_BRUMBY },
318 { "brumby4", BRD_BRUMBY },
319 { "brumby/4", BRD_BRUMBY },
320 { "brumby-4", BRD_BRUMBY },
321 { "brumby8", BRD_BRUMBY },
322 { "brumby/8", BRD_BRUMBY },
323 { "brumby-8", BRD_BRUMBY },
324 { "brumby16", BRD_BRUMBY },
325 { "brumby/16", BRD_BRUMBY },
326 { "brumby-16", BRD_BRUMBY },
328 { "onboard2", BRD_ONBOARD2 },
329 { "onboard-2", BRD_ONBOARD2 },
330 { "onboard/2", BRD_ONBOARD2 },
331 { "onboard-mc", BRD_ONBOARD2 },
332 { "onboard/mc", BRD_ONBOARD2 },
333 { "onboard-mca", BRD_ONBOARD2 },
334 { "onboard/mca", BRD_ONBOARD2 },
335 { "3", BRD_ONBOARD2 },
336 { "onboard", BRD_ONBOARD },
337 { "onboardat", BRD_ONBOARD },
338 { "4", BRD_ONBOARD },
339 { "onboarde", BRD_ONBOARDE },
340 { "onboard-e", BRD_ONBOARDE },
341 { "onboard/e", BRD_ONBOARDE },
342 { "onboard-ei", BRD_ONBOARDE },
343 { "onboard/ei", BRD_ONBOARDE },
344 { "7", BRD_ONBOARDE },
346 { "ecpat", BRD_ECP },
347 { "ec8/64", BRD_ECP },
348 { "ec8/64-at", BRD_ECP },
349 { "ec8/64-isa", BRD_ECP },
351 { "ecpe", BRD_ECPE },
352 { "ecpei", BRD_ECPE },
353 { "ec8/64-e", BRD_ECPE },
354 { "ec8/64-ei", BRD_ECPE },
356 { "ecpmc", BRD_ECPMC },
357 { "ec8/64-mc", BRD_ECPMC },
358 { "ec8/64-mca", BRD_ECPMC },
360 { "ecppci", BRD_ECPPCI },
361 { "ec/ra", BRD_ECPPCI },
362 { "ec/ra-pc", BRD_ECPPCI },
363 { "ec/ra-pci", BRD_ECPPCI },
364 { "29", BRD_ECPPCI },
368 * Define the module agruments.
370 MODULE_AUTHOR("Greg Ungerer");
371 MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver");
372 MODULE_LICENSE("GPL");
375 module_param_array(board0, charp, NULL, 0);
376 MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]");
377 module_param_array(board1, charp, NULL, 0);
378 MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]");
379 module_param_array(board2, charp, NULL, 0);
380 MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]");
381 module_param_array(board3, charp, NULL, 0);
382 MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]");
385 * Set up a default memory address table for EISA board probing.
386 * The default addresses are all bellow 1Mbyte, which has to be the
387 * case anyway. They should be safe, since we only read values from
388 * them, and interrupts are disabled while we do it. If the higher
389 * memory support is compiled in then we also try probing around
390 * the 1Gb, 2Gb and 3Gb areas as well...
392 static unsigned long stli_eisamemprobeaddrs[] = {
393 0xc0000, 0xd0000, 0xe0000, 0xf0000,
394 0x80000000, 0x80010000, 0x80020000, 0x80030000,
395 0x40000000, 0x40010000, 0x40020000, 0x40030000,
396 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000,
397 0xff000000, 0xff010000, 0xff020000, 0xff030000,
400 static int stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs);
403 * Define the Stallion PCI vendor and device IDs.
405 #ifndef PCI_VENDOR_ID_STALLION
406 #define PCI_VENDOR_ID_STALLION 0x124d
408 #ifndef PCI_DEVICE_ID_ECRA
409 #define PCI_DEVICE_ID_ECRA 0x0004
412 static struct pci_device_id istallion_pci_tbl[] = {
413 { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA), },
416 MODULE_DEVICE_TABLE(pci, istallion_pci_tbl);
418 static struct pci_driver stli_pcidriver;
420 /*****************************************************************************/
423 * Hardware configuration info for ECP boards. These defines apply
424 * to the directly accessible io ports of the ECP. There is a set of
425 * defines for each ECP board type, ISA, EISA, MCA and PCI.
429 #define ECP_MEMSIZE (128 * 1024)
430 #define ECP_PCIMEMSIZE (256 * 1024)
432 #define ECP_ATPAGESIZE (4 * 1024)
433 #define ECP_MCPAGESIZE (4 * 1024)
434 #define ECP_EIPAGESIZE (64 * 1024)
435 #define ECP_PCIPAGESIZE (64 * 1024)
437 #define STL_EISAID 0x8c4e
440 * Important defines for the ISA class of ECP board.
443 #define ECP_ATCONFR 1
444 #define ECP_ATMEMAR 2
445 #define ECP_ATMEMPR 3
446 #define ECP_ATSTOP 0x1
447 #define ECP_ATINTENAB 0x10
448 #define ECP_ATENABLE 0x20
449 #define ECP_ATDISABLE 0x00
450 #define ECP_ATADDRMASK 0x3f000
451 #define ECP_ATADDRSHFT 12
454 * Important defines for the EISA class of ECP board.
457 #define ECP_EIMEMARL 1
458 #define ECP_EICONFR 2
459 #define ECP_EIMEMARH 3
460 #define ECP_EIENABLE 0x1
461 #define ECP_EIDISABLE 0x0
462 #define ECP_EISTOP 0x4
463 #define ECP_EIEDGE 0x00
464 #define ECP_EILEVEL 0x80
465 #define ECP_EIADDRMASKL 0x00ff0000
466 #define ECP_EIADDRSHFTL 16
467 #define ECP_EIADDRMASKH 0xff000000
468 #define ECP_EIADDRSHFTH 24
469 #define ECP_EIBRDENAB 0xc84
471 #define ECP_EISAID 0x4
474 * Important defines for the Micro-channel class of ECP board.
475 * (It has a lot in common with the ISA boards.)
478 #define ECP_MCCONFR 1
479 #define ECP_MCSTOP 0x20
480 #define ECP_MCENABLE 0x80
481 #define ECP_MCDISABLE 0x00
484 * Important defines for the PCI class of ECP board.
485 * (It has a lot in common with the other ECP boards.)
487 #define ECP_PCIIREG 0
488 #define ECP_PCICONFR 1
489 #define ECP_PCISTOP 0x01
492 * Hardware configuration info for ONboard and Brumby boards. These
493 * defines apply to the directly accessible io ports of these boards.
495 #define ONB_IOSIZE 16
496 #define ONB_MEMSIZE (64 * 1024)
497 #define ONB_ATPAGESIZE (64 * 1024)
498 #define ONB_MCPAGESIZE (64 * 1024)
499 #define ONB_EIMEMSIZE (128 * 1024)
500 #define ONB_EIPAGESIZE (64 * 1024)
503 * Important defines for the ISA class of ONboard board.
506 #define ONB_ATMEMAR 1
507 #define ONB_ATCONFR 2
508 #define ONB_ATSTOP 0x4
509 #define ONB_ATENABLE 0x01
510 #define ONB_ATDISABLE 0x00
511 #define ONB_ATADDRMASK 0xff0000
512 #define ONB_ATADDRSHFT 16
514 #define ONB_MEMENABLO 0
515 #define ONB_MEMENABHI 0x02
518 * Important defines for the EISA class of ONboard board.
521 #define ONB_EIMEMARL 1
522 #define ONB_EICONFR 2
523 #define ONB_EIMEMARH 3
524 #define ONB_EIENABLE 0x1
525 #define ONB_EIDISABLE 0x0
526 #define ONB_EISTOP 0x4
527 #define ONB_EIEDGE 0x00
528 #define ONB_EILEVEL 0x80
529 #define ONB_EIADDRMASKL 0x00ff0000
530 #define ONB_EIADDRSHFTL 16
531 #define ONB_EIADDRMASKH 0xff000000
532 #define ONB_EIADDRSHFTH 24
533 #define ONB_EIBRDENAB 0xc84
535 #define ONB_EISAID 0x1
538 * Important defines for the Brumby boards. They are pretty simple,
539 * there is not much that is programmably configurable.
541 #define BBY_IOSIZE 16
542 #define BBY_MEMSIZE (64 * 1024)
543 #define BBY_PAGESIZE (16 * 1024)
546 #define BBY_ATCONFR 1
547 #define BBY_ATSTOP 0x4
550 * Important defines for the Stallion boards. They are pretty simple,
551 * there is not much that is programmably configurable.
553 #define STAL_IOSIZE 16
554 #define STAL_MEMSIZE (64 * 1024)
555 #define STAL_PAGESIZE (64 * 1024)
558 * Define the set of status register values for EasyConnection panels.
559 * The signature will return with the status value for each panel. From
560 * this we can determine what is attached to the board - before we have
561 * actually down loaded any code to it.
563 #define ECH_PNLSTATUS 2
564 #define ECH_PNL16PORT 0x20
565 #define ECH_PNLIDMASK 0x07
566 #define ECH_PNLXPID 0x40
567 #define ECH_PNLINTRPEND 0x80
570 * Define some macros to do things to the board. Even those these boards
571 * are somewhat related there is often significantly different ways of
572 * doing some operation on it (like enable, paging, reset, etc). So each
573 * board class has a set of functions which do the commonly required
574 * operations. The macros below basically just call these functions,
575 * generally checking for a NULL function - which means that the board
576 * needs nothing done to it to achieve this operation!
578 #define EBRDINIT(brdp) \
579 if (brdp->init != NULL) \
582 #define EBRDENABLE(brdp) \
583 if (brdp->enable != NULL) \
584 (* brdp->enable)(brdp);
586 #define EBRDDISABLE(brdp) \
587 if (brdp->disable != NULL) \
588 (* brdp->disable)(brdp);
590 #define EBRDINTR(brdp) \
591 if (brdp->intr != NULL) \
592 (* brdp->intr)(brdp);
594 #define EBRDRESET(brdp) \
595 if (brdp->reset != NULL) \
596 (* brdp->reset)(brdp);
598 #define EBRDGETMEMPTR(brdp,offset) \
599 (* brdp->getmemptr)(brdp, offset, __LINE__)
602 * Define the maximal baud rate, and the default baud base for ports.
604 #define STL_MAXBAUD 460800
605 #define STL_BAUDBASE 115200
606 #define STL_CLOSEDELAY (5 * HZ / 10)
608 /*****************************************************************************/
611 * Define macros to extract a brd or port number from a minor number.
613 #define MINOR2BRD(min) (((min) & 0xc0) >> 6)
614 #define MINOR2PORT(min) ((min) & 0x3f)
616 /*****************************************************************************/
619 * Define some handy local macros...
622 #define MIN(a,b) (((a) <= (b)) ? (a) : (b))
625 #define TOLOWER(x) ((((x) >= 'A') && ((x) <= 'Z')) ? ((x) + 0x20) : (x))
627 /*****************************************************************************/
630 * Prototype all functions in this driver!
633 static int stli_parsebrd(stlconf_t *confp, char **argp);
634 static int stli_init(void);
635 static int stli_open(struct tty_struct *tty, struct file *filp);
636 static void stli_close(struct tty_struct *tty, struct file *filp);
637 static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count);
638 static void stli_putchar(struct tty_struct *tty, unsigned char ch);
639 static void stli_flushchars(struct tty_struct *tty);
640 static int stli_writeroom(struct tty_struct *tty);
641 static int stli_charsinbuffer(struct tty_struct *tty);
642 static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg);
643 static void stli_settermios(struct tty_struct *tty, struct ktermios *old);
644 static void stli_throttle(struct tty_struct *tty);
645 static void stli_unthrottle(struct tty_struct *tty);
646 static void stli_stop(struct tty_struct *tty);
647 static void stli_start(struct tty_struct *tty);
648 static void stli_flushbuffer(struct tty_struct *tty);
649 static void stli_breakctl(struct tty_struct *tty, int state);
650 static void stli_waituntilsent(struct tty_struct *tty, int timeout);
651 static void stli_sendxchar(struct tty_struct *tty, char ch);
652 static void stli_hangup(struct tty_struct *tty);
653 static int stli_portinfo(stlibrd_t *brdp, stliport_t *portp, int portnr, char *pos);
655 static int stli_brdinit(stlibrd_t *brdp);
656 static int stli_startbrd(stlibrd_t *brdp);
657 static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp);
658 static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp);
659 static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg);
660 static void stli_brdpoll(stlibrd_t *brdp, cdkhdr_t __iomem *hdrp);
661 static void stli_poll(unsigned long arg);
662 static int stli_hostcmd(stlibrd_t *brdp, stliport_t *portp);
663 static int stli_initopen(stlibrd_t *brdp, stliport_t *portp);
664 static int stli_rawopen(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait);
665 static int stli_rawclose(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait);
666 static int stli_waitcarrier(stlibrd_t *brdp, stliport_t *portp, struct file *filp);
667 static void stli_dohangup(struct work_struct *);
668 static int stli_setport(stliport_t *portp);
669 static int stli_cmdwait(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback);
670 static void stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback);
671 static void __stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback);
672 static void stli_dodelaycmd(stliport_t *portp, cdkctrl_t __iomem *cp);
673 static void stli_mkasyport(stliport_t *portp, asyport_t *pp, struct ktermios *tiosp);
674 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts);
675 static long stli_mktiocm(unsigned long sigvalue);
676 static void stli_read(stlibrd_t *brdp, stliport_t *portp);
677 static int stli_getserial(stliport_t *portp, struct serial_struct __user *sp);
678 static int stli_setserial(stliport_t *portp, struct serial_struct __user *sp);
679 static int stli_getbrdstats(combrd_t __user *bp);
680 static int stli_getportstats(stliport_t *portp, comstats_t __user *cp);
681 static int stli_portcmdstats(stliport_t *portp);
682 static int stli_clrportstats(stliport_t *portp, comstats_t __user *cp);
683 static int stli_getportstruct(stliport_t __user *arg);
684 static int stli_getbrdstruct(stlibrd_t __user *arg);
685 static stlibrd_t *stli_allocbrd(void);
687 static void stli_ecpinit(stlibrd_t *brdp);
688 static void stli_ecpenable(stlibrd_t *brdp);
689 static void stli_ecpdisable(stlibrd_t *brdp);
690 static void __iomem *stli_ecpgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
691 static void stli_ecpreset(stlibrd_t *brdp);
692 static void stli_ecpintr(stlibrd_t *brdp);
693 static void stli_ecpeiinit(stlibrd_t *brdp);
694 static void stli_ecpeienable(stlibrd_t *brdp);
695 static void stli_ecpeidisable(stlibrd_t *brdp);
696 static void __iomem *stli_ecpeigetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
697 static void stli_ecpeireset(stlibrd_t *brdp);
698 static void stli_ecpmcenable(stlibrd_t *brdp);
699 static void stli_ecpmcdisable(stlibrd_t *brdp);
700 static void __iomem *stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
701 static void stli_ecpmcreset(stlibrd_t *brdp);
702 static void stli_ecppciinit(stlibrd_t *brdp);
703 static void __iomem *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
704 static void stli_ecppcireset(stlibrd_t *brdp);
706 static void stli_onbinit(stlibrd_t *brdp);
707 static void stli_onbenable(stlibrd_t *brdp);
708 static void stli_onbdisable(stlibrd_t *brdp);
709 static void __iomem *stli_onbgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
710 static void stli_onbreset(stlibrd_t *brdp);
711 static void stli_onbeinit(stlibrd_t *brdp);
712 static void stli_onbeenable(stlibrd_t *brdp);
713 static void stli_onbedisable(stlibrd_t *brdp);
714 static void __iomem *stli_onbegetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
715 static void stli_onbereset(stlibrd_t *brdp);
716 static void stli_bbyinit(stlibrd_t *brdp);
717 static void __iomem *stli_bbygetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
718 static void stli_bbyreset(stlibrd_t *brdp);
719 static void stli_stalinit(stlibrd_t *brdp);
720 static void __iomem *stli_stalgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
721 static void stli_stalreset(stlibrd_t *brdp);
723 static stliport_t *stli_getport(int brdnr, int panelnr, int portnr);
725 static int stli_initecp(stlibrd_t *brdp);
726 static int stli_initonb(stlibrd_t *brdp);
727 static int stli_eisamemprobe(stlibrd_t *brdp);
728 static int stli_initports(stlibrd_t *brdp);
730 /*****************************************************************************/
733 * Define the driver info for a user level shared memory device. This
734 * device will work sort of like the /dev/kmem device - except that it
735 * will give access to the shared memory on the Stallion intelligent
736 * board. This is also a very useful debugging tool.
738 static const struct file_operations stli_fsiomem = {
739 .owner = THIS_MODULE,
740 .read = stli_memread,
741 .write = stli_memwrite,
742 .ioctl = stli_memioctl,
745 /*****************************************************************************/
748 * Define a timer_list entry for our poll routine. The slave board
749 * is polled every so often to see if anything needs doing. This is
750 * much cheaper on host cpu than using interrupts. It turns out to
751 * not increase character latency by much either...
753 static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0);
755 static int stli_timeron;
758 * Define the calculation for the timeout routine.
760 #define STLI_TIMEOUT (jiffies + 1)
762 /*****************************************************************************/
764 static struct class *istallion_class;
766 static void stli_cleanup_ports(stlibrd_t *brdp)
771 for (j = 0; j < STL_MAXPORTS; j++) {
772 portp = brdp->ports[j];
774 if (portp->tty != NULL)
775 tty_hangup(portp->tty);
782 * Loadable module initialization stuff.
785 static int __init istallion_module_init(void)
791 /*****************************************************************************/
793 static void __exit istallion_module_exit(void)
798 printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle,
801 pci_unregister_driver(&stli_pcidriver);
803 * Free up all allocated resources used by the ports. This includes
804 * memory and interrupts.
808 del_timer_sync(&stli_timerlist);
811 i = tty_unregister_driver(stli_serial);
813 printk("STALLION: failed to un-register tty driver, "
817 put_tty_driver(stli_serial);
818 for (i = 0; i < 4; i++)
819 class_device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, i));
820 class_destroy(istallion_class);
821 if ((i = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem")))
822 printk("STALLION: failed to un-register serial memory device, "
825 kfree(stli_txcookbuf);
827 for (i = 0; (i < stli_nrbrds); i++) {
828 if ((brdp = stli_brds[i]) == NULL)
831 stli_cleanup_ports(brdp);
833 iounmap(brdp->membase);
834 if (brdp->iosize > 0)
835 release_region(brdp->iobase, brdp->iosize);
841 module_init(istallion_module_init);
842 module_exit(istallion_module_exit);
844 /*****************************************************************************/
847 * Check for any arguments passed in on the module load command line.
850 static void stli_argbrds(void)
856 for (i = stli_nrbrds; i < ARRAY_SIZE(stli_brdsp); i++) {
857 memset(&conf, 0, sizeof(conf));
858 if (stli_parsebrd(&conf, stli_brdsp[i]) == 0)
860 if ((brdp = stli_allocbrd()) == NULL)
864 brdp->brdtype = conf.brdtype;
865 brdp->iobase = conf.ioaddr1;
866 brdp->memaddr = conf.memaddr;
871 /*****************************************************************************/
874 * Convert an ascii string number into an unsigned long.
877 static unsigned long stli_atol(char *str)
885 if ((*sp == '0') && (*(sp+1) == 'x')) {
888 } else if (*sp == '0') {
895 for (; (*sp != 0); sp++) {
896 c = (*sp > '9') ? (TOLOWER(*sp) - 'a' + 10) : (*sp - '0');
897 if ((c < 0) || (c >= base)) {
898 printk("STALLION: invalid argument %s\n", str);
902 val = (val * base) + c;
907 /*****************************************************************************/
910 * Parse the supplied argument string, into the board conf struct.
913 static int stli_parsebrd(stlconf_t *confp, char **argp)
918 if (argp[0] == NULL || *argp[0] == 0)
921 for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++)
924 for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) {
925 if (strcmp(stli_brdstr[i].name, argp[0]) == 0)
928 if (i == ARRAY_SIZE(stli_brdstr)) {
929 printk("STALLION: unknown board name, %s?\n", argp[0]);
933 confp->brdtype = stli_brdstr[i].type;
934 if (argp[1] != NULL && *argp[1] != 0)
935 confp->ioaddr1 = stli_atol(argp[1]);
936 if (argp[2] != NULL && *argp[2] != 0)
937 confp->memaddr = stli_atol(argp[2]);
941 /*****************************************************************************/
943 static int stli_open(struct tty_struct *tty, struct file *filp)
947 unsigned int minordev;
948 int brdnr, portnr, rc;
950 minordev = tty->index;
951 brdnr = MINOR2BRD(minordev);
952 if (brdnr >= stli_nrbrds)
954 brdp = stli_brds[brdnr];
957 if ((brdp->state & BST_STARTED) == 0)
959 portnr = MINOR2PORT(minordev);
960 if ((portnr < 0) || (portnr > brdp->nrports))
963 portp = brdp->ports[portnr];
966 if (portp->devnr < 1)
971 * Check if this port is in the middle of closing. If so then wait
972 * until it is closed then return error status based on flag settings.
973 * The sleep here does not need interrupt protection since the wakeup
974 * for it is done with the same context.
976 if (portp->flags & ASYNC_CLOSING) {
977 interruptible_sleep_on(&portp->close_wait);
978 if (portp->flags & ASYNC_HUP_NOTIFY)
984 * On the first open of the device setup the port hardware, and
985 * initialize the per port data structure. Since initializing the port
986 * requires several commands to the board we will need to wait for any
987 * other open that is already initializing the port.
990 tty->driver_data = portp;
993 wait_event_interruptible(portp->raw_wait,
994 !test_bit(ST_INITIALIZING, &portp->state));
995 if (signal_pending(current))
998 if ((portp->flags & ASYNC_INITIALIZED) == 0) {
999 set_bit(ST_INITIALIZING, &portp->state);
1000 if ((rc = stli_initopen(brdp, portp)) >= 0) {
1001 portp->flags |= ASYNC_INITIALIZED;
1002 clear_bit(TTY_IO_ERROR, &tty->flags);
1004 clear_bit(ST_INITIALIZING, &portp->state);
1005 wake_up_interruptible(&portp->raw_wait);
1011 * Check if this port is in the middle of closing. If so then wait
1012 * until it is closed then return error status, based on flag settings.
1013 * The sleep here does not need interrupt protection since the wakeup
1014 * for it is done with the same context.
1016 if (portp->flags & ASYNC_CLOSING) {
1017 interruptible_sleep_on(&portp->close_wait);
1018 if (portp->flags & ASYNC_HUP_NOTIFY)
1020 return -ERESTARTSYS;
1024 * Based on type of open being done check if it can overlap with any
1025 * previous opens still in effect. If we are a normal serial device
1026 * then also we might have to wait for carrier.
1028 if (!(filp->f_flags & O_NONBLOCK)) {
1029 if ((rc = stli_waitcarrier(brdp, portp, filp)) != 0)
1032 portp->flags |= ASYNC_NORMAL_ACTIVE;
1036 /*****************************************************************************/
1038 static void stli_close(struct tty_struct *tty, struct file *filp)
1042 unsigned long flags;
1044 portp = tty->driver_data;
1048 spin_lock_irqsave(&stli_lock, flags);
1049 if (tty_hung_up_p(filp)) {
1050 spin_unlock_irqrestore(&stli_lock, flags);
1053 if ((tty->count == 1) && (portp->refcount != 1))
1054 portp->refcount = 1;
1055 if (portp->refcount-- > 1) {
1056 spin_unlock_irqrestore(&stli_lock, flags);
1060 portp->flags |= ASYNC_CLOSING;
1063 * May want to wait for data to drain before closing. The BUSY flag
1064 * keeps track of whether we are still transmitting or not. It is
1065 * updated by messages from the slave - indicating when all chars
1066 * really have drained.
1068 if (tty == stli_txcooktty)
1069 stli_flushchars(tty);
1071 spin_unlock_irqrestore(&stli_lock, flags);
1073 if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE)
1074 tty_wait_until_sent(tty, portp->closing_wait);
1076 portp->flags &= ~ASYNC_INITIALIZED;
1077 brdp = stli_brds[portp->brdnr];
1078 stli_rawclose(brdp, portp, 0, 0);
1079 if (tty->termios->c_cflag & HUPCL) {
1080 stli_mkasysigs(&portp->asig, 0, 0);
1081 if (test_bit(ST_CMDING, &portp->state))
1082 set_bit(ST_DOSIGS, &portp->state);
1084 stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig,
1085 sizeof(asysigs_t), 0);
1087 clear_bit(ST_TXBUSY, &portp->state);
1088 clear_bit(ST_RXSTOP, &portp->state);
1089 set_bit(TTY_IO_ERROR, &tty->flags);
1090 if (tty->ldisc.flush_buffer)
1091 (tty->ldisc.flush_buffer)(tty);
1092 set_bit(ST_DOFLUSHRX, &portp->state);
1093 stli_flushbuffer(tty);
1098 if (portp->openwaitcnt) {
1099 if (portp->close_delay)
1100 msleep_interruptible(jiffies_to_msecs(portp->close_delay));
1101 wake_up_interruptible(&portp->open_wait);
1104 portp->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
1105 wake_up_interruptible(&portp->close_wait);
1108 /*****************************************************************************/
1111 * Carry out first open operations on a port. This involves a number of
1112 * commands to be sent to the slave. We need to open the port, set the
1113 * notification events, set the initial port settings, get and set the
1114 * initial signal values. We sleep and wait in between each one. But
1115 * this still all happens pretty quickly.
1118 static int stli_initopen(stlibrd_t *brdp, stliport_t *portp)
1120 struct tty_struct *tty;
1125 if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0)
1128 memset(&nt, 0, sizeof(asynotify_t));
1129 nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK);
1131 if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt,
1132 sizeof(asynotify_t), 0)) < 0)
1138 stli_mkasyport(portp, &aport, tty->termios);
1139 if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport,
1140 sizeof(asyport_t), 0)) < 0)
1143 set_bit(ST_GETSIGS, &portp->state);
1144 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig,
1145 sizeof(asysigs_t), 1)) < 0)
1147 if (test_and_clear_bit(ST_GETSIGS, &portp->state))
1148 portp->sigs = stli_mktiocm(portp->asig.sigvalue);
1149 stli_mkasysigs(&portp->asig, 1, 1);
1150 if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1151 sizeof(asysigs_t), 0)) < 0)
1157 /*****************************************************************************/
1160 * Send an open message to the slave. This will sleep waiting for the
1161 * acknowledgement, so must have user context. We need to co-ordinate
1162 * with close events here, since we don't want open and close events
1166 static int stli_rawopen(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait)
1168 cdkhdr_t __iomem *hdrp;
1169 cdkctrl_t __iomem *cp;
1170 unsigned char __iomem *bits;
1171 unsigned long flags;
1175 * Send a message to the slave to open this port.
1179 * Slave is already closing this port. This can happen if a hangup
1180 * occurs on this port. So we must wait until it is complete. The
1181 * order of opens and closes may not be preserved across shared
1182 * memory, so we must wait until it is complete.
1184 wait_event_interruptible(portp->raw_wait,
1185 !test_bit(ST_CLOSING, &portp->state));
1186 if (signal_pending(current)) {
1187 return -ERESTARTSYS;
1191 * Everything is ready now, so write the open message into shared
1192 * memory. Once the message is in set the service bits to say that
1193 * this port wants service.
1195 spin_lock_irqsave(&brd_lock, flags);
1197 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1198 writel(arg, &cp->openarg);
1199 writeb(1, &cp->open);
1200 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1201 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1203 writeb(readb(bits) | portp->portbit, bits);
1207 spin_unlock_irqrestore(&brd_lock, flags);
1212 * Slave is in action, so now we must wait for the open acknowledgment
1216 set_bit(ST_OPENING, &portp->state);
1217 spin_unlock_irqrestore(&brd_lock, flags);
1219 wait_event_interruptible(portp->raw_wait,
1220 !test_bit(ST_OPENING, &portp->state));
1221 if (signal_pending(current))
1224 if ((rc == 0) && (portp->rc != 0))
1229 /*****************************************************************************/
1232 * Send a close message to the slave. Normally this will sleep waiting
1233 * for the acknowledgement, but if wait parameter is 0 it will not. If
1234 * wait is true then must have user context (to sleep).
1237 static int stli_rawclose(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait)
1239 cdkhdr_t __iomem *hdrp;
1240 cdkctrl_t __iomem *cp;
1241 unsigned char __iomem *bits;
1242 unsigned long flags;
1246 * Slave is already closing this port. This can happen if a hangup
1247 * occurs on this port.
1250 wait_event_interruptible(portp->raw_wait,
1251 !test_bit(ST_CLOSING, &portp->state));
1252 if (signal_pending(current)) {
1253 return -ERESTARTSYS;
1258 * Write the close command into shared memory.
1260 spin_lock_irqsave(&brd_lock, flags);
1262 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
1263 writel(arg, &cp->closearg);
1264 writeb(1, &cp->close);
1265 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1266 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1268 writeb(readb(bits) |portp->portbit, bits);
1271 set_bit(ST_CLOSING, &portp->state);
1272 spin_unlock_irqrestore(&brd_lock, flags);
1278 * Slave is in action, so now we must wait for the open acknowledgment
1282 wait_event_interruptible(portp->raw_wait,
1283 !test_bit(ST_CLOSING, &portp->state));
1284 if (signal_pending(current))
1287 if ((rc == 0) && (portp->rc != 0))
1292 /*****************************************************************************/
1295 * Send a command to the slave and wait for the response. This must
1296 * have user context (it sleeps). This routine is generic in that it
1297 * can send any type of command. Its purpose is to wait for that command
1298 * to complete (as opposed to initiating the command then returning).
1301 static int stli_cmdwait(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback)
1303 wait_event_interruptible(portp->raw_wait,
1304 !test_bit(ST_CMDING, &portp->state));
1305 if (signal_pending(current))
1306 return -ERESTARTSYS;
1308 stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
1310 wait_event_interruptible(portp->raw_wait,
1311 !test_bit(ST_CMDING, &portp->state));
1312 if (signal_pending(current))
1313 return -ERESTARTSYS;
1320 /*****************************************************************************/
1323 * Send the termios settings for this port to the slave. This sleeps
1324 * waiting for the command to complete - so must have user context.
1327 static int stli_setport(stliport_t *portp)
1334 if (portp->tty == NULL)
1336 if (portp->brdnr < 0 && portp->brdnr >= stli_nrbrds)
1338 brdp = stli_brds[portp->brdnr];
1342 stli_mkasyport(portp, &aport, portp->tty->termios);
1343 return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0));
1346 /*****************************************************************************/
1349 * Possibly need to wait for carrier (DCD signal) to come high. Say
1350 * maybe because if we are clocal then we don't need to wait...
1353 static int stli_waitcarrier(stlibrd_t *brdp, stliport_t *portp, struct file *filp)
1355 unsigned long flags;
1361 if (portp->tty->termios->c_cflag & CLOCAL)
1364 spin_lock_irqsave(&stli_lock, flags);
1365 portp->openwaitcnt++;
1366 if (! tty_hung_up_p(filp))
1368 spin_unlock_irqrestore(&stli_lock, flags);
1371 stli_mkasysigs(&portp->asig, 1, 1);
1372 if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS,
1373 &portp->asig, sizeof(asysigs_t), 0)) < 0)
1375 if (tty_hung_up_p(filp) ||
1376 ((portp->flags & ASYNC_INITIALIZED) == 0)) {
1377 if (portp->flags & ASYNC_HUP_NOTIFY)
1383 if (((portp->flags & ASYNC_CLOSING) == 0) &&
1384 (doclocal || (portp->sigs & TIOCM_CD))) {
1387 if (signal_pending(current)) {
1391 interruptible_sleep_on(&portp->open_wait);
1394 spin_lock_irqsave(&stli_lock, flags);
1395 if (! tty_hung_up_p(filp))
1397 portp->openwaitcnt--;
1398 spin_unlock_irqrestore(&stli_lock, flags);
1403 /*****************************************************************************/
1406 * Write routine. Take the data and put it in the shared memory ring
1407 * queue. If port is not already sending chars then need to mark the
1408 * service bits for this port.
1411 static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count)
1413 cdkasy_t __iomem *ap;
1414 cdkhdr_t __iomem *hdrp;
1415 unsigned char __iomem *bits;
1416 unsigned char __iomem *shbuf;
1417 unsigned char *chbuf;
1420 unsigned int len, stlen, head, tail, size;
1421 unsigned long flags;
1423 if (tty == stli_txcooktty)
1424 stli_flushchars(tty);
1425 portp = tty->driver_data;
1428 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
1430 brdp = stli_brds[portp->brdnr];
1433 chbuf = (unsigned char *) buf;
1436 * All data is now local, shove as much as possible into shared memory.
1438 spin_lock_irqsave(&brd_lock, flags);
1440 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1441 head = (unsigned int) readw(&ap->txq.head);
1442 tail = (unsigned int) readw(&ap->txq.tail);
1443 if (tail != ((unsigned int) readw(&ap->txq.tail)))
1444 tail = (unsigned int) readw(&ap->txq.tail);
1445 size = portp->txsize;
1447 len = size - (head - tail) - 1;
1448 stlen = size - head;
1450 len = tail - head - 1;
1454 len = MIN(len, count);
1456 shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset);
1459 stlen = MIN(len, stlen);
1460 memcpy_toio(shbuf + head, chbuf, stlen);
1471 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1472 writew(head, &ap->txq.head);
1473 if (test_bit(ST_TXBUSY, &portp->state)) {
1474 if (readl(&ap->changed.data) & DT_TXEMPTY)
1475 writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
1477 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1478 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1480 writeb(readb(bits) | portp->portbit, bits);
1481 set_bit(ST_TXBUSY, &portp->state);
1483 spin_unlock_irqrestore(&brd_lock, flags);
1488 /*****************************************************************************/
1491 * Output a single character. We put it into a temporary local buffer
1492 * (for speed) then write out that buffer when the flushchars routine
1493 * is called. There is a safety catch here so that if some other port
1494 * writes chars before the current buffer has been, then we write them
1495 * first them do the new ports.
1498 static void stli_putchar(struct tty_struct *tty, unsigned char ch)
1500 if (tty != stli_txcooktty) {
1501 if (stli_txcooktty != NULL)
1502 stli_flushchars(stli_txcooktty);
1503 stli_txcooktty = tty;
1506 stli_txcookbuf[stli_txcooksize++] = ch;
1509 /*****************************************************************************/
1512 * Transfer characters from the local TX cooking buffer to the board.
1513 * We sort of ignore the tty that gets passed in here. We rely on the
1514 * info stored with the TX cook buffer to tell us which port to flush
1515 * the data on. In any case we clean out the TX cook buffer, for re-use
1519 static void stli_flushchars(struct tty_struct *tty)
1521 cdkhdr_t __iomem *hdrp;
1522 unsigned char __iomem *bits;
1523 cdkasy_t __iomem *ap;
1524 struct tty_struct *cooktty;
1527 unsigned int len, stlen, head, tail, size, count, cooksize;
1529 unsigned char __iomem *shbuf;
1530 unsigned long flags;
1532 cooksize = stli_txcooksize;
1533 cooktty = stli_txcooktty;
1534 stli_txcooksize = 0;
1535 stli_txcookrealsize = 0;
1536 stli_txcooktty = NULL;
1540 if (cooktty == NULL)
1547 portp = tty->driver_data;
1550 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
1552 brdp = stli_brds[portp->brdnr];
1556 spin_lock_irqsave(&brd_lock, flags);
1559 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1560 head = (unsigned int) readw(&ap->txq.head);
1561 tail = (unsigned int) readw(&ap->txq.tail);
1562 if (tail != ((unsigned int) readw(&ap->txq.tail)))
1563 tail = (unsigned int) readw(&ap->txq.tail);
1564 size = portp->txsize;
1566 len = size - (head - tail) - 1;
1567 stlen = size - head;
1569 len = tail - head - 1;
1573 len = MIN(len, cooksize);
1575 shbuf = EBRDGETMEMPTR(brdp, portp->txoffset);
1576 buf = stli_txcookbuf;
1579 stlen = MIN(len, stlen);
1580 memcpy_toio(shbuf + head, buf, stlen);
1591 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
1592 writew(head, &ap->txq.head);
1594 if (test_bit(ST_TXBUSY, &portp->state)) {
1595 if (readl(&ap->changed.data) & DT_TXEMPTY)
1596 writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
1598 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
1599 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
1601 writeb(readb(bits) | portp->portbit, bits);
1602 set_bit(ST_TXBUSY, &portp->state);
1605 spin_unlock_irqrestore(&brd_lock, flags);
1608 /*****************************************************************************/
1610 static int stli_writeroom(struct tty_struct *tty)
1612 cdkasyrq_t __iomem *rp;
1615 unsigned int head, tail, len;
1616 unsigned long flags;
1618 if (tty == stli_txcooktty) {
1619 if (stli_txcookrealsize != 0) {
1620 len = stli_txcookrealsize - stli_txcooksize;
1625 portp = tty->driver_data;
1628 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
1630 brdp = stli_brds[portp->brdnr];
1634 spin_lock_irqsave(&brd_lock, flags);
1636 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1637 head = (unsigned int) readw(&rp->head);
1638 tail = (unsigned int) readw(&rp->tail);
1639 if (tail != ((unsigned int) readw(&rp->tail)))
1640 tail = (unsigned int) readw(&rp->tail);
1641 len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head);
1644 spin_unlock_irqrestore(&brd_lock, flags);
1646 if (tty == stli_txcooktty) {
1647 stli_txcookrealsize = len;
1648 len -= stli_txcooksize;
1653 /*****************************************************************************/
1656 * Return the number of characters in the transmit buffer. Normally we
1657 * will return the number of chars in the shared memory ring queue.
1658 * We need to kludge around the case where the shared memory buffer is
1659 * empty but not all characters have drained yet, for this case just
1660 * return that there is 1 character in the buffer!
1663 static int stli_charsinbuffer(struct tty_struct *tty)
1665 cdkasyrq_t __iomem *rp;
1668 unsigned int head, tail, len;
1669 unsigned long flags;
1671 if (tty == stli_txcooktty)
1672 stli_flushchars(tty);
1673 portp = tty->driver_data;
1676 if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds))
1678 brdp = stli_brds[portp->brdnr];
1682 spin_lock_irqsave(&brd_lock, flags);
1684 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
1685 head = (unsigned int) readw(&rp->head);
1686 tail = (unsigned int) readw(&rp->tail);
1687 if (tail != ((unsigned int) readw(&rp->tail)))
1688 tail = (unsigned int) readw(&rp->tail);
1689 len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head));
1690 if ((len == 0) && test_bit(ST_TXBUSY, &portp->state))
1693 spin_unlock_irqrestore(&brd_lock, flags);
1698 /*****************************************************************************/
1701 * Generate the serial struct info.
1704 static int stli_getserial(stliport_t *portp, struct serial_struct __user *sp)
1706 struct serial_struct sio;
1709 memset(&sio, 0, sizeof(struct serial_struct));
1710 sio.type = PORT_UNKNOWN;
1711 sio.line = portp->portnr;
1713 sio.flags = portp->flags;
1714 sio.baud_base = portp->baud_base;
1715 sio.close_delay = portp->close_delay;
1716 sio.closing_wait = portp->closing_wait;
1717 sio.custom_divisor = portp->custom_divisor;
1718 sio.xmit_fifo_size = 0;
1721 brdp = stli_brds[portp->brdnr];
1723 sio.port = brdp->iobase;
1725 return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ?
1729 /*****************************************************************************/
1732 * Set port according to the serial struct info.
1733 * At this point we do not do any auto-configure stuff, so we will
1734 * just quietly ignore any requests to change irq, etc.
1737 static int stli_setserial(stliport_t *portp, struct serial_struct __user *sp)
1739 struct serial_struct sio;
1742 if (copy_from_user(&sio, sp, sizeof(struct serial_struct)))
1744 if (!capable(CAP_SYS_ADMIN)) {
1745 if ((sio.baud_base != portp->baud_base) ||
1746 (sio.close_delay != portp->close_delay) ||
1747 ((sio.flags & ~ASYNC_USR_MASK) !=
1748 (portp->flags & ~ASYNC_USR_MASK)))
1752 portp->flags = (portp->flags & ~ASYNC_USR_MASK) |
1753 (sio.flags & ASYNC_USR_MASK);
1754 portp->baud_base = sio.baud_base;
1755 portp->close_delay = sio.close_delay;
1756 portp->closing_wait = sio.closing_wait;
1757 portp->custom_divisor = sio.custom_divisor;
1759 if ((rc = stli_setport(portp)) < 0)
1764 /*****************************************************************************/
1766 static int stli_tiocmget(struct tty_struct *tty, struct file *file)
1768 stliport_t *portp = tty->driver_data;
1774 if (portp->brdnr < 0 || portp->brdnr >= stli_nrbrds)
1776 brdp = stli_brds[portp->brdnr];
1779 if (tty->flags & (1 << TTY_IO_ERROR))
1782 if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS,
1783 &portp->asig, sizeof(asysigs_t), 1)) < 0)
1786 return stli_mktiocm(portp->asig.sigvalue);
1789 static int stli_tiocmset(struct tty_struct *tty, struct file *file,
1790 unsigned int set, unsigned int clear)
1792 stliport_t *portp = tty->driver_data;
1794 int rts = -1, dtr = -1;
1798 if (portp->brdnr < 0 || portp->brdnr >= stli_nrbrds)
1800 brdp = stli_brds[portp->brdnr];
1803 if (tty->flags & (1 << TTY_IO_ERROR))
1806 if (set & TIOCM_RTS)
1808 if (set & TIOCM_DTR)
1810 if (clear & TIOCM_RTS)
1812 if (clear & TIOCM_DTR)
1815 stli_mkasysigs(&portp->asig, dtr, rts);
1817 return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1818 sizeof(asysigs_t), 0);
1821 static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg)
1827 void __user *argp = (void __user *)arg;
1829 portp = tty->driver_data;
1832 if (portp->brdnr < 0 || portp->brdnr >= stli_nrbrds)
1834 brdp = stli_brds[portp->brdnr];
1838 if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
1839 (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) {
1840 if (tty->flags & (1 << TTY_IO_ERROR))
1848 rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0),
1849 (unsigned __user *) arg);
1852 if ((rc = get_user(ival, (unsigned __user *) arg)) == 0)
1853 tty->termios->c_cflag =
1854 (tty->termios->c_cflag & ~CLOCAL) |
1855 (ival ? CLOCAL : 0);
1858 rc = stli_getserial(portp, argp);
1861 rc = stli_setserial(portp, argp);
1864 rc = put_user(portp->pflag, (unsigned __user *)argp);
1867 if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0)
1868 stli_setport(portp);
1870 case COM_GETPORTSTATS:
1871 rc = stli_getportstats(portp, argp);
1873 case COM_CLRPORTSTATS:
1874 rc = stli_clrportstats(portp, argp);
1880 case TIOCSERGSTRUCT:
1881 case TIOCSERGETMULTI:
1882 case TIOCSERSETMULTI:
1891 /*****************************************************************************/
1894 * This routine assumes that we have user context and can sleep.
1895 * Looks like it is true for the current ttys implementation..!!
1898 static void stli_settermios(struct tty_struct *tty, struct ktermios *old)
1902 struct ktermios *tiosp;
1907 portp = tty->driver_data;
1910 if (portp->brdnr < 0 || portp->brdnr >= stli_nrbrds)
1912 brdp = stli_brds[portp->brdnr];
1916 tiosp = tty->termios;
1917 if ((tiosp->c_cflag == old->c_cflag) &&
1918 (tiosp->c_iflag == old->c_iflag))
1921 stli_mkasyport(portp, &aport, tiosp);
1922 stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0);
1923 stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1);
1924 stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
1925 sizeof(asysigs_t), 0);
1926 if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0))
1927 tty->hw_stopped = 0;
1928 if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL))
1929 wake_up_interruptible(&portp->open_wait);
1932 /*****************************************************************************/
1935 * Attempt to flow control who ever is sending us data. We won't really
1936 * do any flow control action here. We can't directly, and even if we
1937 * wanted to we would have to send a command to the slave. The slave
1938 * knows how to flow control, and will do so when its buffers reach its
1939 * internal high water marks. So what we will do is set a local state
1940 * bit that will stop us sending any RX data up from the poll routine
1941 * (which is the place where RX data from the slave is handled).
1944 static void stli_throttle(struct tty_struct *tty)
1946 stliport_t *portp = tty->driver_data;
1949 set_bit(ST_RXSTOP, &portp->state);
1952 /*****************************************************************************/
1955 * Unflow control the device sending us data... That means that all
1956 * we have to do is clear the RXSTOP state bit. The next poll call
1957 * will then be able to pass the RX data back up.
1960 static void stli_unthrottle(struct tty_struct *tty)
1962 stliport_t *portp = tty->driver_data;
1965 clear_bit(ST_RXSTOP, &portp->state);
1968 /*****************************************************************************/
1971 * Stop the transmitter.
1974 static void stli_stop(struct tty_struct *tty)
1978 /*****************************************************************************/
1981 * Start the transmitter again.
1984 static void stli_start(struct tty_struct *tty)
1988 /*****************************************************************************/
1991 * Scheduler called hang up routine. This is called from the scheduler,
1992 * not direct from the driver "poll" routine. We can't call it there
1993 * since the real local hangup code will enable/disable the board and
1994 * other things that we can't do while handling the poll. Much easier
1995 * to deal with it some time later (don't really care when, hangups
1996 * aren't that time critical).
1999 static void stli_dohangup(struct work_struct *ugly_api)
2001 stliport_t *portp = container_of(ugly_api, stliport_t, tqhangup);
2002 if (portp->tty != NULL) {
2003 tty_hangup(portp->tty);
2007 /*****************************************************************************/
2010 * Hangup this port. This is pretty much like closing the port, only
2011 * a little more brutal. No waiting for data to drain. Shutdown the
2012 * port and maybe drop signals. This is rather tricky really. We want
2013 * to close the port as well.
2016 static void stli_hangup(struct tty_struct *tty)
2020 unsigned long flags;
2022 portp = tty->driver_data;
2025 if (portp->brdnr < 0 || portp->brdnr >= stli_nrbrds)
2027 brdp = stli_brds[portp->brdnr];
2031 portp->flags &= ~ASYNC_INITIALIZED;
2033 if (!test_bit(ST_CLOSING, &portp->state))
2034 stli_rawclose(brdp, portp, 0, 0);
2036 spin_lock_irqsave(&stli_lock, flags);
2037 if (tty->termios->c_cflag & HUPCL) {
2038 stli_mkasysigs(&portp->asig, 0, 0);
2039 if (test_bit(ST_CMDING, &portp->state)) {
2040 set_bit(ST_DOSIGS, &portp->state);
2041 set_bit(ST_DOFLUSHTX, &portp->state);
2042 set_bit(ST_DOFLUSHRX, &portp->state);
2044 stli_sendcmd(brdp, portp, A_SETSIGNALSF,
2045 &portp->asig, sizeof(asysigs_t), 0);
2049 clear_bit(ST_TXBUSY, &portp->state);
2050 clear_bit(ST_RXSTOP, &portp->state);
2051 set_bit(TTY_IO_ERROR, &tty->flags);
2053 portp->flags &= ~ASYNC_NORMAL_ACTIVE;
2054 portp->refcount = 0;
2055 spin_unlock_irqrestore(&stli_lock, flags);
2057 wake_up_interruptible(&portp->open_wait);
2060 /*****************************************************************************/
2063 * Flush characters from the lower buffer. We may not have user context
2064 * so we cannot sleep waiting for it to complete. Also we need to check
2065 * if there is chars for this port in the TX cook buffer, and flush them
2069 static void stli_flushbuffer(struct tty_struct *tty)
2073 unsigned long ftype, flags;
2075 portp = tty->driver_data;
2078 if (portp->brdnr < 0 || portp->brdnr >= stli_nrbrds)
2080 brdp = stli_brds[portp->brdnr];
2084 spin_lock_irqsave(&brd_lock, flags);
2085 if (tty == stli_txcooktty) {
2086 stli_txcooktty = NULL;
2087 stli_txcooksize = 0;
2088 stli_txcookrealsize = 0;
2090 if (test_bit(ST_CMDING, &portp->state)) {
2091 set_bit(ST_DOFLUSHTX, &portp->state);
2094 if (test_bit(ST_DOFLUSHRX, &portp->state)) {
2096 clear_bit(ST_DOFLUSHRX, &portp->state);
2098 __stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0);
2100 spin_unlock_irqrestore(&brd_lock, flags);
2104 /*****************************************************************************/
2106 static void stli_breakctl(struct tty_struct *tty, int state)
2112 portp = tty->driver_data;
2115 if (portp->brdnr < 0 || portp->brdnr >= stli_nrbrds)
2117 brdp = stli_brds[portp->brdnr];
2121 arg = (state == -1) ? BREAKON : BREAKOFF;
2122 stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0);
2125 /*****************************************************************************/
2127 static void stli_waituntilsent(struct tty_struct *tty, int timeout)
2134 portp = tty->driver_data;
2140 tend = jiffies + timeout;
2142 while (test_bit(ST_TXBUSY, &portp->state)) {
2143 if (signal_pending(current))
2145 msleep_interruptible(20);
2146 if (time_after_eq(jiffies, tend))
2151 /*****************************************************************************/
2153 static void stli_sendxchar(struct tty_struct *tty, char ch)
2159 portp = tty->driver_data;
2162 if (portp->brdnr < 0 || portp->brdnr >= stli_nrbrds)
2164 brdp = stli_brds[portp->brdnr];
2168 memset(&actrl, 0, sizeof(asyctrl_t));
2169 if (ch == STOP_CHAR(tty)) {
2170 actrl.rxctrl = CT_STOPFLOW;
2171 } else if (ch == START_CHAR(tty)) {
2172 actrl.rxctrl = CT_STARTFLOW;
2174 actrl.txctrl = CT_SENDCHR;
2177 stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
2180 /*****************************************************************************/
2185 * Format info for a specified port. The line is deliberately limited
2186 * to 80 characters. (If it is too long it will be truncated, if too
2187 * short then padded with spaces).
2190 static int stli_portinfo(stlibrd_t *brdp, stliport_t *portp, int portnr, char *pos)
2195 rc = stli_portcmdstats(portp);
2198 if (brdp->state & BST_STARTED) {
2199 switch (stli_comstats.hwid) {
2200 case 0: uart = "2681"; break;
2201 case 1: uart = "SC26198"; break;
2202 default:uart = "CD1400"; break;
2207 sp += sprintf(sp, "%d: uart:%s ", portnr, uart);
2209 if ((brdp->state & BST_STARTED) && (rc >= 0)) {
2210 sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal,
2211 (int) stli_comstats.rxtotal);
2213 if (stli_comstats.rxframing)
2214 sp += sprintf(sp, " fe:%d",
2215 (int) stli_comstats.rxframing);
2216 if (stli_comstats.rxparity)
2217 sp += sprintf(sp, " pe:%d",
2218 (int) stli_comstats.rxparity);
2219 if (stli_comstats.rxbreaks)
2220 sp += sprintf(sp, " brk:%d",
2221 (int) stli_comstats.rxbreaks);
2222 if (stli_comstats.rxoverrun)
2223 sp += sprintf(sp, " oe:%d",
2224 (int) stli_comstats.rxoverrun);
2226 cnt = sprintf(sp, "%s%s%s%s%s ",
2227 (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "",
2228 (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "",
2229 (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "",
2230 (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "",
2231 (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : "");
2236 for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++)
2239 pos[(MAXLINE - 2)] = '+';
2240 pos[(MAXLINE - 1)] = '\n';
2245 /*****************************************************************************/
2248 * Port info, read from the /proc file system.
2251 static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data)
2255 int brdnr, portnr, totalport;
2264 pos += sprintf(pos, "%s: version %s", stli_drvtitle,
2266 while (pos < (page + MAXLINE - 1))
2273 * We scan through for each board, panel and port. The offset is
2274 * calculated on the fly, and irrelevant ports are skipped.
2276 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
2277 brdp = stli_brds[brdnr];
2280 if (brdp->state == 0)
2283 maxoff = curoff + (brdp->nrports * MAXLINE);
2284 if (off >= maxoff) {
2289 totalport = brdnr * STL_MAXPORTS;
2290 for (portnr = 0; (portnr < brdp->nrports); portnr++,
2292 portp = brdp->ports[portnr];
2295 if (off >= (curoff += MAXLINE))
2297 if ((pos - page + MAXLINE) > count)
2299 pos += stli_portinfo(brdp, portp, totalport, pos);
2310 /*****************************************************************************/
2313 * Generic send command routine. This will send a message to the slave,
2314 * of the specified type with the specified argument. Must be very
2315 * careful of data that will be copied out from shared memory -
2316 * containing command results. The command completion is all done from
2317 * a poll routine that does not have user context. Therefore you cannot
2318 * copy back directly into user space, or to the kernel stack of a
2319 * process. This routine does not sleep, so can be called from anywhere.
2321 * The caller must hold the brd_lock (see also stli_sendcmd the usual
2325 static void __stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback)
2327 cdkhdr_t __iomem *hdrp;
2328 cdkctrl_t __iomem *cp;
2329 unsigned char __iomem *bits;
2330 unsigned long flags;
2332 spin_lock_irqsave(&brd_lock, flags);
2334 if (test_bit(ST_CMDING, &portp->state)) {
2335 printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n",
2337 spin_unlock_irqrestore(&brd_lock, flags);
2342 cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
2344 memcpy_toio((void __iomem *) &(cp->args[0]), arg, size);
2347 portp->argsize = size;
2350 writel(0, &cp->status);
2351 writel(cmd, &cp->cmd);
2352 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2353 bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
2355 writeb(readb(bits) | portp->portbit, bits);
2356 set_bit(ST_CMDING, &portp->state);
2358 spin_unlock_irqrestore(&brd_lock, flags);
2361 static void stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback)
2363 unsigned long flags;
2365 spin_lock_irqsave(&brd_lock, flags);
2366 __stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
2367 spin_unlock_irqrestore(&brd_lock, flags);
2370 /*****************************************************************************/
2373 * Read data from shared memory. This assumes that the shared memory
2374 * is enabled and that interrupts are off. Basically we just empty out
2375 * the shared memory buffer into the tty buffer. Must be careful to
2376 * handle the case where we fill up the tty buffer, but still have
2377 * more chars to unload.
2380 static void stli_read(stlibrd_t *brdp, stliport_t *portp)
2382 cdkasyrq_t __iomem *rp;
2383 char __iomem *shbuf;
2384 struct tty_struct *tty;
2385 unsigned int head, tail, size;
2386 unsigned int len, stlen;
2388 if (test_bit(ST_RXSTOP, &portp->state))
2394 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2395 head = (unsigned int) readw(&rp->head);
2396 if (head != ((unsigned int) readw(&rp->head)))
2397 head = (unsigned int) readw(&rp->head);
2398 tail = (unsigned int) readw(&rp->tail);
2399 size = portp->rxsize;
2404 len = size - (tail - head);
2405 stlen = size - tail;
2408 len = tty_buffer_request_room(tty, len);
2410 shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset);
2413 unsigned char *cptr;
2415 stlen = MIN(len, stlen);
2416 tty_prepare_flip_string(tty, &cptr, stlen);
2417 memcpy_fromio(cptr, shbuf + tail, stlen);
2425 rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
2426 writew(tail, &rp->tail);
2429 set_bit(ST_RXING, &portp->state);
2431 tty_schedule_flip(tty);
2434 /*****************************************************************************/
2437 * Set up and carry out any delayed commands. There is only a small set
2438 * of slave commands that can be done "off-level". So it is not too
2439 * difficult to deal with them here.
2442 static void stli_dodelaycmd(stliport_t *portp, cdkctrl_t __iomem *cp)
2446 if (test_bit(ST_DOSIGS, &portp->state)) {
2447 if (test_bit(ST_DOFLUSHTX, &portp->state) &&
2448 test_bit(ST_DOFLUSHRX, &portp->state))
2449 cmd = A_SETSIGNALSF;
2450 else if (test_bit(ST_DOFLUSHTX, &portp->state))
2451 cmd = A_SETSIGNALSFTX;
2452 else if (test_bit(ST_DOFLUSHRX, &portp->state))
2453 cmd = A_SETSIGNALSFRX;
2456 clear_bit(ST_DOFLUSHTX, &portp->state);
2457 clear_bit(ST_DOFLUSHRX, &portp->state);
2458 clear_bit(ST_DOSIGS, &portp->state);
2459 memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig,
2461 writel(0, &cp->status);
2462 writel(cmd, &cp->cmd);
2463 set_bit(ST_CMDING, &portp->state);
2464 } else if (test_bit(ST_DOFLUSHTX, &portp->state) ||
2465 test_bit(ST_DOFLUSHRX, &portp->state)) {
2466 cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0);
2467 cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0);
2468 clear_bit(ST_DOFLUSHTX, &portp->state);
2469 clear_bit(ST_DOFLUSHRX, &portp->state);
2470 memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int));
2471 writel(0, &cp->status);
2472 writel(A_FLUSH, &cp->cmd);
2473 set_bit(ST_CMDING, &portp->state);
2477 /*****************************************************************************/
2480 * Host command service checking. This handles commands or messages
2481 * coming from the slave to the host. Must have board shared memory
2482 * enabled and interrupts off when called. Notice that by servicing the
2483 * read data last we don't need to change the shared memory pointer
2484 * during processing (which is a slow IO operation).
2485 * Return value indicates if this port is still awaiting actions from
2486 * the slave (like open, command, or even TX data being sent). If 0
2487 * then port is still busy, otherwise no longer busy.
2490 static int stli_hostcmd(stlibrd_t *brdp, stliport_t *portp)
2492 cdkasy_t __iomem *ap;
2493 cdkctrl_t __iomem *cp;
2494 struct tty_struct *tty;
2496 unsigned long oldsigs;
2499 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
2503 * Check if we are waiting for an open completion message.
2505 if (test_bit(ST_OPENING, &portp->state)) {
2506 rc = readl(&cp->openarg);
2507 if (readb(&cp->open) == 0 && rc != 0) {
2510 writel(0, &cp->openarg);
2512 clear_bit(ST_OPENING, &portp->state);
2513 wake_up_interruptible(&portp->raw_wait);
2518 * Check if we are waiting for a close completion message.
2520 if (test_bit(ST_CLOSING, &portp->state)) {
2521 rc = (int) readl(&cp->closearg);
2522 if (readb(&cp->close) == 0 && rc != 0) {
2525 writel(0, &cp->closearg);
2527 clear_bit(ST_CLOSING, &portp->state);
2528 wake_up_interruptible(&portp->raw_wait);
2533 * Check if we are waiting for a command completion message. We may
2534 * need to copy out the command results associated with this command.
2536 if (test_bit(ST_CMDING, &portp->state)) {
2537 rc = readl(&cp->status);
2538 if (readl(&cp->cmd) == 0 && rc != 0) {
2541 if (portp->argp != NULL) {
2542 memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]),
2546 writel(0, &cp->status);
2548 clear_bit(ST_CMDING, &portp->state);
2549 stli_dodelaycmd(portp, cp);
2550 wake_up_interruptible(&portp->raw_wait);
2555 * Check for any notification messages ready. This includes lots of
2556 * different types of events - RX chars ready, RX break received,
2557 * TX data low or empty in the slave, modem signals changed state.
2566 if (nt.signal & SG_DCD) {
2567 oldsigs = portp->sigs;
2568 portp->sigs = stli_mktiocm(nt.sigvalue);
2569 clear_bit(ST_GETSIGS, &portp->state);
2570 if ((portp->sigs & TIOCM_CD) &&
2571 ((oldsigs & TIOCM_CD) == 0))
2572 wake_up_interruptible(&portp->open_wait);
2573 if ((oldsigs & TIOCM_CD) &&
2574 ((portp->sigs & TIOCM_CD) == 0)) {
2575 if (portp->flags & ASYNC_CHECK_CD) {
2577 schedule_work(&portp->tqhangup);
2582 if (nt.data & DT_TXEMPTY)
2583 clear_bit(ST_TXBUSY, &portp->state);
2584 if (nt.data & (DT_TXEMPTY | DT_TXLOW)) {
2588 wake_up_interruptible(&tty->write_wait);
2592 if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) {
2594 tty_insert_flip_char(tty, 0, TTY_BREAK);
2595 if (portp->flags & ASYNC_SAK) {
2599 tty_schedule_flip(tty);
2603 if (nt.data & DT_RXBUSY) {
2605 stli_read(brdp, portp);
2610 * It might seem odd that we are checking for more RX chars here.
2611 * But, we need to handle the case where the tty buffer was previously
2612 * filled, but we had more characters to pass up. The slave will not
2613 * send any more RX notify messages until the RX buffer has been emptied.
2614 * But it will leave the service bits on (since the buffer is not empty).
2615 * So from here we can try to process more RX chars.
2617 if ((!donerx) && test_bit(ST_RXING, &portp->state)) {
2618 clear_bit(ST_RXING, &portp->state);
2619 stli_read(brdp, portp);
2622 return((test_bit(ST_OPENING, &portp->state) ||
2623 test_bit(ST_CLOSING, &portp->state) ||
2624 test_bit(ST_CMDING, &portp->state) ||
2625 test_bit(ST_TXBUSY, &portp->state) ||
2626 test_bit(ST_RXING, &portp->state)) ? 0 : 1);
2629 /*****************************************************************************/
2632 * Service all ports on a particular board. Assumes that the boards
2633 * shared memory is enabled, and that the page pointer is pointed
2634 * at the cdk header structure.
2637 static void stli_brdpoll(stlibrd_t *brdp, cdkhdr_t __iomem *hdrp)
2640 unsigned char hostbits[(STL_MAXCHANS / 8) + 1];
2641 unsigned char slavebits[(STL_MAXCHANS / 8) + 1];
2642 unsigned char __iomem *slavep;
2643 int bitpos, bitat, bitsize;
2644 int channr, nrdevs, slavebitchange;
2646 bitsize = brdp->bitsize;
2647 nrdevs = brdp->nrdevs;
2650 * Check if slave wants any service. Basically we try to do as
2651 * little work as possible here. There are 2 levels of service
2652 * bits. So if there is nothing to do we bail early. We check
2653 * 8 service bits at a time in the inner loop, so we can bypass
2654 * the lot if none of them want service.
2656 memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset),
2659 memset(&slavebits[0], 0, bitsize);
2662 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2663 if (hostbits[bitpos] == 0)
2665 channr = bitpos * 8;
2666 for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) {
2667 if (hostbits[bitpos] & bitat) {
2668 portp = brdp->ports[(channr - 1)];
2669 if (stli_hostcmd(brdp, portp)) {
2671 slavebits[bitpos] |= bitat;
2678 * If any of the ports are no longer busy then update them in the
2679 * slave request bits. We need to do this after, since a host port
2680 * service may initiate more slave requests.
2682 if (slavebitchange) {
2683 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2684 slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset;
2685 for (bitpos = 0; (bitpos < bitsize); bitpos++) {
2686 if (readb(slavebits + bitpos))
2687 writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos);
2692 /*****************************************************************************/
2695 * Driver poll routine. This routine polls the boards in use and passes
2696 * messages back up to host when necessary. This is actually very
2697 * CPU efficient, since we will always have the kernel poll clock, it
2698 * adds only a few cycles when idle (since board service can be
2699 * determined very easily), but when loaded generates no interrupts
2700 * (with their expensive associated context change).
2703 static void stli_poll(unsigned long arg)
2705 cdkhdr_t __iomem *hdrp;
2709 stli_timerlist.expires = STLI_TIMEOUT;
2710 add_timer(&stli_timerlist);
2713 * Check each board and do any servicing required.
2715 for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
2716 brdp = stli_brds[brdnr];
2719 if ((brdp->state & BST_STARTED) == 0)
2722 spin_lock(&brd_lock);
2724 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
2725 if (readb(&hdrp->hostreq))
2726 stli_brdpoll(brdp, hdrp);
2728 spin_unlock(&brd_lock);
2732 /*****************************************************************************/
2735 * Translate the termios settings into the port setting structure of
2739 static void stli_mkasyport(stliport_t *portp, asyport_t *pp, struct ktermios *tiosp)
2741 memset(pp, 0, sizeof(asyport_t));
2744 * Start of by setting the baud, char size, parity and stop bit info.
2746 pp->baudout = tty_get_baud_rate(portp->tty);
2747 if ((tiosp->c_cflag & CBAUD) == B38400) {
2748 if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
2749 pp->baudout = 57600;
2750 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
2751 pp->baudout = 115200;
2752 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
2753 pp->baudout = 230400;
2754 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
2755 pp->baudout = 460800;
2756 else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)
2757 pp->baudout = (portp->baud_base / portp->custom_divisor);
2759 if (pp->baudout > STL_MAXBAUD)
2760 pp->baudout = STL_MAXBAUD;
2761 pp->baudin = pp->baudout;
2763 switch (tiosp->c_cflag & CSIZE) {
2778 if (tiosp->c_cflag & CSTOPB)
2779 pp->stopbs = PT_STOP2;
2781 pp->stopbs = PT_STOP1;
2783 if (tiosp->c_cflag & PARENB) {
2784 if (tiosp->c_cflag & PARODD)
2785 pp->parity = PT_ODDPARITY;
2787 pp->parity = PT_EVENPARITY;
2789 pp->parity = PT_NOPARITY;
2793 * Set up any flow control options enabled.
2795 if (tiosp->c_iflag & IXON) {
2797 if (tiosp->c_iflag & IXANY)
2798 pp->flow |= F_IXANY;
2800 if (tiosp->c_cflag & CRTSCTS)
2801 pp->flow |= (F_RTSFLOW | F_CTSFLOW);
2803 pp->startin = tiosp->c_cc[VSTART];
2804 pp->stopin = tiosp->c_cc[VSTOP];
2805 pp->startout = tiosp->c_cc[VSTART];
2806 pp->stopout = tiosp->c_cc[VSTOP];
2809 * Set up the RX char marking mask with those RX error types we must
2810 * catch. We can get the slave to help us out a little here, it will
2811 * ignore parity errors and breaks for us, and mark parity errors in
2814 if (tiosp->c_iflag & IGNPAR)
2815 pp->iflag |= FI_IGNRXERRS;
2816 if (tiosp->c_iflag & IGNBRK)
2817 pp->iflag |= FI_IGNBREAK;
2819 portp->rxmarkmsk = 0;
2820 if (tiosp->c_iflag & (INPCK | PARMRK))
2821 pp->iflag |= FI_1MARKRXERRS;
2822 if (tiosp->c_iflag & BRKINT)
2823 portp->rxmarkmsk |= BRKINT;
2826 * Set up clocal processing as required.
2828 if (tiosp->c_cflag & CLOCAL)
2829 portp->flags &= ~ASYNC_CHECK_CD;
2831 portp->flags |= ASYNC_CHECK_CD;
2834 * Transfer any persistent flags into the asyport structure.
2836 pp->pflag = (portp->pflag & 0xffff);
2837 pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0;
2838 pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0;
2839 pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0;
2842 /*****************************************************************************/
2845 * Construct a slave signals structure for setting the DTR and RTS
2846 * signals as specified.
2849 static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts)
2851 memset(sp, 0, sizeof(asysigs_t));
2853 sp->signal |= SG_DTR;
2854 sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0);
2857 sp->signal |= SG_RTS;
2858 sp->sigvalue |= ((rts > 0) ? SG_RTS : 0);
2862 /*****************************************************************************/
2865 * Convert the signals returned from the slave into a local TIOCM type
2866 * signals value. We keep them locally in TIOCM format.
2869 static long stli_mktiocm(unsigned long sigvalue)
2872 tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0);
2873 tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0);
2874 tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0);
2875 tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0);
2876 tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0);
2877 tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0);
2881 /*****************************************************************************/
2884 * All panels and ports actually attached have been worked out. All
2885 * we need to do here is set up the appropriate per port data structures.
2888 static int stli_initports(stlibrd_t *brdp)
2891 int i, panelnr, panelport;
2893 for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) {
2894 portp = kzalloc(sizeof(stliport_t), GFP_KERNEL);
2896 printk("STALLION: failed to allocate port structure\n");
2900 portp->magic = STLI_PORTMAGIC;
2902 portp->brdnr = brdp->brdnr;
2903 portp->panelnr = panelnr;
2904 portp->baud_base = STL_BAUDBASE;
2905 portp->close_delay = STL_CLOSEDELAY;
2906 portp->closing_wait = 30 * HZ;
2907 INIT_WORK(&portp->tqhangup, stli_dohangup);
2908 init_waitqueue_head(&portp->open_wait);
2909 init_waitqueue_head(&portp->close_wait);
2910 init_waitqueue_head(&portp->raw_wait);
2912 if (panelport >= brdp->panels[panelnr]) {
2916 brdp->ports[i] = portp;
2922 /*****************************************************************************/
2925 * All the following routines are board specific hardware operations.
2928 static void stli_ecpinit(stlibrd_t *brdp)
2930 unsigned long memconf;
2932 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
2934 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2937 memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT;
2938 outb(memconf, (brdp->iobase + ECP_ATMEMAR));
2941 /*****************************************************************************/
2943 static void stli_ecpenable(stlibrd_t *brdp)
2945 outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR));
2948 /*****************************************************************************/
2950 static void stli_ecpdisable(stlibrd_t *brdp)
2952 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2955 /*****************************************************************************/
2957 static void __iomem *stli_ecpgetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
2962 if (offset > brdp->memsize) {
2963 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
2964 "range at line=%d(%d), brd=%d\n",
2965 (int) offset, line, __LINE__, brdp->brdnr);
2969 ptr = brdp->membase + (offset % ECP_ATPAGESIZE);
2970 val = (unsigned char) (offset / ECP_ATPAGESIZE);
2972 outb(val, (brdp->iobase + ECP_ATMEMPR));
2976 /*****************************************************************************/
2978 static void stli_ecpreset(stlibrd_t *brdp)
2980 outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
2982 outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
2986 /*****************************************************************************/
2988 static void stli_ecpintr(stlibrd_t *brdp)
2990 outb(0x1, brdp->iobase);
2993 /*****************************************************************************/
2996 * The following set of functions act on ECP EISA boards.
2999 static void stli_ecpeiinit(stlibrd_t *brdp)
3001 unsigned long memconf;
3003 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
3004 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
3006 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3009 memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL;
3010 outb(memconf, (brdp->iobase + ECP_EIMEMARL));
3011 memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH;
3012 outb(memconf, (brdp->iobase + ECP_EIMEMARH));
3015 /*****************************************************************************/
3017 static void stli_ecpeienable(stlibrd_t *brdp)
3019 outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR));
3022 /*****************************************************************************/
3024 static void stli_ecpeidisable(stlibrd_t *brdp)
3026 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3029 /*****************************************************************************/
3031 static void __iomem *stli_ecpeigetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3036 if (offset > brdp->memsize) {
3037 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3038 "range at line=%d(%d), brd=%d\n",
3039 (int) offset, line, __LINE__, brdp->brdnr);
3043 ptr = brdp->membase + (offset % ECP_EIPAGESIZE);
3044 if (offset < ECP_EIPAGESIZE)
3047 val = ECP_EIENABLE | 0x40;
3049 outb(val, (brdp->iobase + ECP_EICONFR));
3053 /*****************************************************************************/
3055 static void stli_ecpeireset(stlibrd_t *brdp)
3057 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
3059 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3063 /*****************************************************************************/
3066 * The following set of functions act on ECP MCA boards.
3069 static void stli_ecpmcenable(stlibrd_t *brdp)
3071 outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR));
3074 /*****************************************************************************/
3076 static void stli_ecpmcdisable(stlibrd_t *brdp)
3078 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
3081 /*****************************************************************************/
3083 static void __iomem *stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3088 if (offset > brdp->memsize) {
3089 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3090 "range at line=%d(%d), brd=%d\n",
3091 (int) offset, line, __LINE__, brdp->brdnr);
3095 ptr = brdp->membase + (offset % ECP_MCPAGESIZE);
3096 val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE;
3098 outb(val, (brdp->iobase + ECP_MCCONFR));
3102 /*****************************************************************************/
3104 static void stli_ecpmcreset(stlibrd_t *brdp)
3106 outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR));
3108 outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
3112 /*****************************************************************************/
3115 * The following set of functions act on ECP PCI boards.
3118 static void stli_ecppciinit(stlibrd_t *brdp)
3120 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
3122 outb(0, (brdp->iobase + ECP_PCICONFR));
3126 /*****************************************************************************/
3128 static void __iomem *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3133 if (offset > brdp->memsize) {
3134 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3135 "range at line=%d(%d), board=%d\n",
3136 (int) offset, line, __LINE__, brdp->brdnr);
3140 ptr = brdp->membase + (offset % ECP_PCIPAGESIZE);
3141 val = (offset / ECP_PCIPAGESIZE) << 1;
3143 outb(val, (brdp->iobase + ECP_PCICONFR));
3147 /*****************************************************************************/
3149 static void stli_ecppcireset(stlibrd_t *brdp)
3151 outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
3153 outb(0, (brdp->iobase + ECP_PCICONFR));
3157 /*****************************************************************************/
3160 * The following routines act on ONboards.
3163 static void stli_onbinit(stlibrd_t *brdp)
3165 unsigned long memconf;
3167 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
3169 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
3172 memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT;
3173 outb(memconf, (brdp->iobase + ONB_ATMEMAR));
3174 outb(0x1, brdp->iobase);
3178 /*****************************************************************************/
3180 static void stli_onbenable(stlibrd_t *brdp)
3182 outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR));
3185 /*****************************************************************************/
3187 static void stli_onbdisable(stlibrd_t *brdp)
3189 outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR));
3192 /*****************************************************************************/
3194 static void __iomem *stli_onbgetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3198 if (offset > brdp->memsize) {
3199 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3200 "range at line=%d(%d), brd=%d\n",
3201 (int) offset, line, __LINE__, brdp->brdnr);
3204 ptr = brdp->membase + (offset % ONB_ATPAGESIZE);
3209 /*****************************************************************************/
3211 static void stli_onbreset(stlibrd_t *brdp)
3213 outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
3215 outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
3219 /*****************************************************************************/
3222 * The following routines act on ONboard EISA.
3225 static void stli_onbeinit(stlibrd_t *brdp)
3227 unsigned long memconf;
3229 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
3230 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3232 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3235 memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL;
3236 outb(memconf, (brdp->iobase + ONB_EIMEMARL));
3237 memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH;
3238 outb(memconf, (brdp->iobase + ONB_EIMEMARH));
3239 outb(0x1, brdp->iobase);
3243 /*****************************************************************************/
3245 static void stli_onbeenable(stlibrd_t *brdp)
3247 outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR));
3250 /*****************************************************************************/
3252 static void stli_onbedisable(stlibrd_t *brdp)
3254 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3257 /*****************************************************************************/
3259 static void __iomem *stli_onbegetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3264 if (offset > brdp->memsize) {
3265 printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
3266 "range at line=%d(%d), brd=%d\n",
3267 (int) offset, line, __LINE__, brdp->brdnr);
3271 ptr = brdp->membase + (offset % ONB_EIPAGESIZE);
3272 if (offset < ONB_EIPAGESIZE)
3275 val = ONB_EIENABLE | 0x40;
3277 outb(val, (brdp->iobase + ONB_EICONFR));
3281 /*****************************************************************************/
3283 static void stli_onbereset(stlibrd_t *brdp)
3285 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3287 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3291 /*****************************************************************************/
3294 * The following routines act on Brumby boards.
3297 static void stli_bbyinit(stlibrd_t *brdp)
3299 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
3301 outb(0, (brdp->iobase + BBY_ATCONFR));
3303 outb(0x1, brdp->iobase);
3307 /*****************************************************************************/
3309 static void __iomem *stli_bbygetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3314 BUG_ON(offset > brdp->memsize);
3316 ptr = brdp->membase + (offset % BBY_PAGESIZE);
3317 val = (unsigned char) (offset / BBY_PAGESIZE);
3318 outb(val, (brdp->iobase + BBY_ATCONFR));
3322 /*****************************************************************************/
3324 static void stli_bbyreset(stlibrd_t *brdp)
3326 outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
3328 outb(0, (brdp->iobase + BBY_ATCONFR));
3332 /*****************************************************************************/
3335 * The following routines act on original old Stallion boards.
3338 static void stli_stalinit(stlibrd_t *brdp)
3340 outb(0x1, brdp->iobase);
3344 /*****************************************************************************/
3346 static void __iomem *stli_stalgetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
3348 BUG_ON(offset > brdp->memsize);
3349 return brdp->membase + (offset % STAL_PAGESIZE);
3352 /*****************************************************************************/
3354 static void stli_stalreset(stlibrd_t *brdp)
3358 vecp = (u32 __iomem *) (brdp->membase + 0x30);
3359 writel(0xffff0000, vecp);
3360 outb(0, brdp->iobase);
3364 /*****************************************************************************/
3367 * Try to find an ECP board and initialize it. This handles only ECP
3371 static int stli_initecp(stlibrd_t *brdp)
3374 cdkecpsig_t __iomem *sigsp;
3375 unsigned int status, nxtid;
3377 int panelnr, nrports;
3379 if (!request_region(brdp->iobase, brdp->iosize, "istallion"))
3382 if ((brdp->iobase == 0) || (brdp->memaddr == 0))
3384 release_region(brdp->iobase, brdp->iosize);
3388 brdp->iosize = ECP_IOSIZE;
3391 * Based on the specific board type setup the common vars to access
3392 * and enable shared memory. Set all board specific information now
3395 switch (brdp->brdtype) {
3397 brdp->membase = (void *) brdp->memaddr;
3398 brdp->memsize = ECP_MEMSIZE;
3399 brdp->pagesize = ECP_ATPAGESIZE;
3400 brdp->init = stli_ecpinit;
3401 brdp->enable = stli_ecpenable;
3402 brdp->reenable = stli_ecpenable;
3403 brdp->disable = stli_ecpdisable;
3404 brdp->getmemptr = stli_ecpgetmemptr;
3405 brdp->intr = stli_ecpintr;
3406 brdp->reset = stli_ecpreset;
3407 name = "serial(EC8/64)";
3411 brdp->membase = (void *) brdp->memaddr;
3412 brdp->memsize = ECP_MEMSIZE;
3413 brdp->pagesize = ECP_EIPAGESIZE;
3414 brdp->init = stli_ecpeiinit;
3415 brdp->enable = stli_ecpeienable;
3416 brdp->reenable = stli_ecpeienable;
3417 brdp->disable = stli_ecpeidisable;
3418 brdp->getmemptr = stli_ecpeigetmemptr;
3419 brdp->intr = stli_ecpintr;
3420 brdp->reset = stli_ecpeireset;
3421 name = "serial(EC8/64-EI)";
3425 brdp->membase = (void *) brdp->memaddr;
3426 brdp->memsize = ECP_MEMSIZE;
3427 brdp->pagesize = ECP_MCPAGESIZE;
3429 brdp->enable = stli_ecpmcenable;
3430 brdp->reenable = stli_ecpmcenable;
3431 brdp->disable = stli_ecpmcdisable;
3432 brdp->getmemptr = stli_ecpmcgetmemptr;
3433 brdp->intr = stli_ecpintr;
3434 brdp->reset = stli_ecpmcreset;
3435 name = "serial(EC8/64-MCA)";
3439 brdp->membase = (void *) brdp->memaddr;
3440 brdp->memsize = ECP_PCIMEMSIZE;
3441 brdp->pagesize = ECP_PCIPAGESIZE;
3442 brdp->init = stli_ecppciinit;
3443 brdp->enable = NULL;
3444 brdp->reenable = NULL;
3445 brdp->disable = NULL;
3446 brdp->getmemptr = stli_ecppcigetmemptr;
3447 brdp->intr = stli_ecpintr;
3448 brdp->reset = stli_ecppcireset;
3449 name = "serial(EC/RA-PCI)";
3453 release_region(brdp->iobase, brdp->iosize);
3458 * The per-board operations structure is all set up, so now let's go
3459 * and get the board operational. Firstly initialize board configuration
3460 * registers. Set the memory mapping info so we can get at the boards
3465 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
3466 if (brdp->membase == NULL)
3468 release_region(brdp->iobase, brdp->iosize);
3473 * Now that all specific code is set up, enable the shared memory and
3474 * look for the a signature area that will tell us exactly what board
3475 * this is, and what it is connected to it.
3478 sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3479 memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t));
3482 if (sig.magic != cpu_to_le32(ECP_MAGIC))
3484 release_region(brdp->iobase, brdp->iosize);
3485 iounmap(brdp->membase);
3486 brdp->membase = NULL;
3491 * Scan through the signature looking at the panels connected to the
3492 * board. Calculate the total number of ports as we go.
3494 for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) {
3495 status = sig.panelid[nxtid];
3496 if ((status & ECH_PNLIDMASK) != nxtid)
3499 brdp->panelids[panelnr] = status;
3500 nrports = (status & ECH_PNL16PORT) ? 16 : 8;
3501 if ((nrports == 16) && ((status & ECH_PNLXPID) == 0))
3503 brdp->panels[panelnr] = nrports;
3504 brdp->nrports += nrports;
3510 brdp->state |= BST_FOUND;
3514 /*****************************************************************************/
3517 * Try to find an ONboard, Brumby or Stallion board and initialize it.
3518 * This handles only these board types.
3521 static int stli_initonb(stlibrd_t *brdp)
3524 cdkonbsig_t __iomem *sigsp;
3529 * Do a basic sanity check on the IO and memory addresses.
3531 if (brdp->iobase == 0 || brdp->memaddr == 0)
3534 brdp->iosize = ONB_IOSIZE;
3536 if (!request_region(brdp->iobase, brdp->iosize, "istallion"))
3540 * Based on the specific board type setup the common vars to access
3541 * and enable shared memory. Set all board specific information now
3544 switch (brdp->brdtype) {
3548 case BRD_ONBOARD2_32:
3550 brdp->memsize = ONB_MEMSIZE;
3551 brdp->pagesize = ONB_ATPAGESIZE;
3552 brdp->init = stli_onbinit;
3553 brdp->enable = stli_onbenable;
3554 brdp->reenable = stli_onbenable;
3555 brdp->disable = stli_onbdisable;
3556 brdp->getmemptr = stli_onbgetmemptr;
3557 brdp->intr = stli_ecpintr;
3558 brdp->reset = stli_onbreset;
3559 if (brdp->memaddr > 0x100000)
3560 brdp->enabval = ONB_MEMENABHI;
3562 brdp->enabval = ONB_MEMENABLO;
3563 name = "serial(ONBoard)";
3567 brdp->memsize = ONB_EIMEMSIZE;
3568 brdp->pagesize = ONB_EIPAGESIZE;
3569 brdp->init = stli_onbeinit;
3570 brdp->enable = stli_onbeenable;
3571 brdp->reenable = stli_onbeenable;
3572 brdp->disable = stli_onbedisable;
3573 brdp->getmemptr = stli_onbegetmemptr;
3574 brdp->intr = stli_ecpintr;
3575 brdp->reset = stli_onbereset;
3576 name = "serial(ONBoard/E)";
3582 brdp->memsize = BBY_MEMSIZE;
3583 brdp->pagesize = BBY_PAGESIZE;
3584 brdp->init = stli_bbyinit;
3585 brdp->enable = NULL;
3586 brdp->reenable = NULL;
3587 brdp->disable = NULL;
3588 brdp->getmemptr = stli_bbygetmemptr;
3589 brdp->intr = stli_ecpintr;
3590 brdp->reset = stli_bbyreset;
3591 name = "serial(Brumby)";
3595 brdp->memsize = STAL_MEMSIZE;
3596 brdp->pagesize = STAL_PAGESIZE;
3597 brdp->init = stli_stalinit;
3598 brdp->enable = NULL;
3599 brdp->reenable = NULL;
3600 brdp->disable = NULL;
3601 brdp->getmemptr = stli_stalgetmemptr;
3602 brdp->intr = stli_ecpintr;
3603 brdp->reset = stli_stalreset;
3604 name = "serial(Stallion)";
3608 release_region(brdp->iobase, brdp->iosize);
3613 * The per-board operations structure is all set up, so now let's go
3614 * and get the board operational. Firstly initialize board configuration
3615 * registers. Set the memory mapping info so we can get at the boards
3620 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
3621 if (brdp->membase == NULL)
3623 release_region(brdp->iobase, brdp->iosize);
3628 * Now that all specific code is set up, enable the shared memory and
3629 * look for the a signature area that will tell us exactly what board
3630 * this is, and how many ports.
3633 sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
3634 memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t));
3637 if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) ||
3638 sig.magic1 != cpu_to_le16(ONB_MAGIC1) ||
3639 sig.magic2 != cpu_to_le16(ONB_MAGIC2) ||
3640 sig.magic3 != cpu_to_le16(ONB_MAGIC3))
3642 release_region(brdp->iobase, brdp->iosize);
3643 iounmap(brdp->membase);
3644 brdp->membase = NULL;
3649 * Scan through the signature alive mask and calculate how many ports
3650 * there are on this board.
3656 for (i = 0; (i < 16); i++) {
3657 if (((sig.amask0 << i) & 0x8000) == 0)
3662 brdp->panels[0] = brdp->nrports;
3665 brdp->state |= BST_FOUND;
3669 /*****************************************************************************/
3672 * Start up a running board. This routine is only called after the
3673 * code has been down loaded to the board and is operational. It will
3674 * read in the memory map, and get the show on the road...
3677 static int stli_startbrd(stlibrd_t *brdp)
3679 cdkhdr_t __iomem *hdrp;
3680 cdkmem_t __iomem *memp;
3681 cdkasy_t __iomem *ap;
3682 unsigned long flags;
3684 int portnr, nrdevs, i, rc = 0;
3687 spin_lock_irqsave(&brd_lock, flags);
3689 hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
3690 nrdevs = hdrp->nrdevs;
3693 printk("%s(%d): CDK version %d.%d.%d --> "
3694 "nrdevs=%d memp=%x hostp=%x slavep=%x\n",
3695 __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification),
3696 readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp),
3697 readl(&hdrp->slavep));
3700 if (nrdevs < (brdp->nrports + 1)) {
3701 printk(KERN_ERR "STALLION: slave failed to allocate memory for "
3702 "all devices, devices=%d\n", nrdevs);
3703 brdp->nrports = nrdevs - 1;
3705 brdp->nrdevs = nrdevs;
3706 brdp->hostoffset = hdrp->hostp - CDK_CDKADDR;
3707 brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR;
3708 brdp->bitsize = (nrdevs + 7) / 8;
3709 memoff = readl(&hdrp->memp);
3710 if (memoff > brdp->memsize) {
3711 printk(KERN_ERR "STALLION: corrupted shared memory region?\n");
3713 goto stli_donestartup;
3715 memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff);
3716 if (readw(&memp->dtype) != TYP_ASYNCTRL) {
3717 printk(KERN_ERR "STALLION: no slave control device found\n");
3718 goto stli_donestartup;
3723 * Cycle through memory allocation of each port. We are guaranteed to
3724 * have all ports inside the first page of slave window, so no need to
3725 * change pages while reading memory map.
3727 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) {
3728 if (readw(&memp->dtype) != TYP_ASYNC)
3730 portp = brdp->ports[portnr];
3734 portp->addr = readl(&memp->offset);
3735 portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs));
3736 portp->portidx = (unsigned char) (i / 8);
3737 portp->portbit = (unsigned char) (0x1 << (i % 8));
3740 writeb(0xff, &hdrp->slavereq);
3743 * For each port setup a local copy of the RX and TX buffer offsets
3744 * and sizes. We do this separate from the above, because we need to
3745 * move the shared memory page...
3747 for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) {
3748 portp = brdp->ports[portnr];
3751 if (portp->addr == 0)
3753 ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
3755 portp->rxsize = readw(&ap->rxq.size);
3756 portp->txsize = readw(&ap->txq.size);
3757 portp->rxoffset = readl(&ap->rxq.offset);
3758 portp->txoffset = readl(&ap->txq.offset);
3764 spin_unlock_irqrestore(&brd_lock, flags);
3767 brdp->state |= BST_STARTED;
3769 if (! stli_timeron) {
3771 stli_timerlist.expires = STLI_TIMEOUT;
3772 add_timer(&stli_timerlist);
3778 /*****************************************************************************/
3781 * Probe and initialize the specified board.
3784 static int __devinit stli_brdinit(stlibrd_t *brdp)
3786 stli_brds[brdp->brdnr] = brdp;
3788 switch (brdp->brdtype) {
3799 case BRD_ONBOARD2_32:
3811 printk(KERN_ERR "STALLION: %s board type not supported in "
3812 "this driver\n", stli_brdnames[brdp->brdtype]);
3815 printk(KERN_ERR "STALLION: board=%d is unknown board "
3816 "type=%d\n", brdp->brdnr, brdp->brdtype);
3820 if ((brdp->state & BST_FOUND) == 0) {
3821 printk(KERN_ERR "STALLION: %s board not found, board=%d "
3823 stli_brdnames[brdp->brdtype], brdp->brdnr,
3824 brdp->iobase, (int) brdp->memaddr);
3828 stli_initports(brdp);
3829 printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x "
3830 "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype],
3831 brdp->brdnr, brdp->iobase, (int) brdp->memaddr,
3832 brdp->nrpanels, brdp->nrports);
3836 /*****************************************************************************/
3839 * Probe around trying to find where the EISA boards shared memory
3840 * might be. This is a bit if hack, but it is the best we can do.
3843 static int stli_eisamemprobe(stlibrd_t *brdp)
3845 cdkecpsig_t ecpsig, __iomem *ecpsigp;
3846 cdkonbsig_t onbsig, __iomem *onbsigp;
3850 * First up we reset the board, to get it into a known state. There
3851 * is only 2 board types here we need to worry about. Don;t use the
3852 * standard board init routine here, it programs up the shared
3853 * memory address, and we don't know it yet...
3855 if (brdp->brdtype == BRD_ECPE) {
3856 outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
3857 outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
3859 outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
3861 stli_ecpeienable(brdp);
3862 } else if (brdp->brdtype == BRD_ONBOARDE) {
3863 outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
3864 outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
3866 outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
3868 outb(0x1, brdp->iobase);
3870 stli_onbeenable(brdp);
3876 brdp->memsize = ECP_MEMSIZE;
3879 * Board shared memory is enabled, so now we have a poke around and
3880 * see if we can find it.
3882 for (i = 0; (i < stli_eisamempsize); i++) {
3883 brdp->memaddr = stli_eisamemprobeaddrs[i];
3884 brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
3885 if (brdp->membase == NULL)
3888 if (brdp->brdtype == BRD_ECPE) {
3889 ecpsigp = stli_ecpeigetmemptr(brdp,
3890 CDK_SIGADDR, __LINE__);
3891 memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t));
3892 if (ecpsig.magic == cpu_to_le32(ECP_MAGIC))
3895 onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp,
3896 CDK_SIGADDR, __LINE__);
3897 memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t));
3898 if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) &&
3899 (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) &&
3900 (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) &&
3901 (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3)))
3905 iounmap(brdp->membase);
3911 * Regardless of whether we found the shared memory or not we must
3912 * disable the region. After that return success or failure.
3914 if (brdp->brdtype == BRD_ECPE)
3915 stli_ecpeidisable(brdp);
3917 stli_onbedisable(brdp);
3921 brdp->membase = NULL;
3922 printk(KERN_ERR "STALLION: failed to probe shared memory "
3923 "region for %s in EISA slot=%d\n",
3924 stli_brdnames[brdp->brdtype], (brdp->iobase >> 12));
3930 static int stli_getbrdnr(void)
3934 for (i = 0; i < STL_MAXBRDS; i++) {
3935 if (!stli_brds[i]) {
3936 if (i >= stli_nrbrds)
3937 stli_nrbrds = i + 1;
3944 /*****************************************************************************/
3947 * Probe around and try to find any EISA boards in system. The biggest
3948 * problem here is finding out what memory address is associated with
3949 * an EISA board after it is found. The registers of the ECPE and
3950 * ONboardE are not readable - so we can't read them from there. We
3951 * don't have access to the EISA CMOS (or EISA BIOS) so we don't
3952 * actually have any way to find out the real value. The best we can
3953 * do is go probing around in the usual places hoping we can find it.
3956 static int stli_findeisabrds(void)
3959 unsigned int iobase, eid;
3963 * Firstly check if this is an EISA system. If this is not an EISA system then
3964 * don't bother going any further!
3970 * Looks like an EISA system, so go searching for EISA boards.
3972 for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) {
3973 outb(0xff, (iobase + 0xc80));
3974 eid = inb(iobase + 0xc80);
3975 eid |= inb(iobase + 0xc81) << 8;
3976 if (eid != STL_EISAID)
3980 * We have found a board. Need to check if this board was
3981 * statically configured already (just in case!).
3983 for (i = 0; (i < STL_MAXBRDS); i++) {
3984 brdp = stli_brds[i];
3987 if (brdp->iobase == iobase)
3990 if (i < STL_MAXBRDS)
3994 * We have found a Stallion board and it is not configured already.
3995 * Allocate a board structure and initialize it.
3997 if ((brdp = stli_allocbrd()) == NULL)
3999 if ((brdp->brdnr = stli_getbrdnr()) < 0)
4001 eid = inb(iobase + 0xc82);
4002 if (eid == ECP_EISAID)
4003 brdp->brdtype = BRD_ECPE;
4004 else if (eid == ONB_EISAID)
4005 brdp->brdtype = BRD_ONBOARDE;
4007 brdp->brdtype = BRD_UNKNOWN;
4008 brdp->iobase = iobase;
4009 outb(0x1, (iobase + 0xc84));
4010 if (stli_eisamemprobe(brdp))
4011 outb(0, (iobase + 0xc84));
4018 /*****************************************************************************/
4021 * Find the next available board number that is free.
4024 /*****************************************************************************/
4027 * We have a Stallion board. Allocate a board structure and
4028 * initialize it. Read its IO and MEMORY resources from PCI
4029 * configuration space.
4032 static int __devinit stli_pciprobe(struct pci_dev *pdev,
4033 const struct pci_device_id *ent)
4038 retval = pci_enable_device(pdev);
4041 brdp = stli_allocbrd();
4046 if ((brdp->brdnr = stli_getbrdnr()) < 0) { /* TODO: locking */
4047 printk(KERN_INFO "STALLION: too many boards found, "
4048 "maximum supported %d\n", STL_MAXBRDS);
4052 brdp->brdtype = BRD_ECPPCI;
4054 * We have all resources from the board, so lets setup the actual
4055 * board structure now.
4057 brdp->iobase = pci_resource_start(pdev, 3);
4058 brdp->memaddr = pci_resource_start(pdev, 2);
4059 retval = stli_brdinit(brdp);
4063 pci_set_drvdata(pdev, brdp);
4072 static void stli_pciremove(struct pci_dev *pdev)
4074 stlibrd_t *brdp = pci_get_drvdata(pdev);
4076 stli_cleanup_ports(brdp);
4078 iounmap(brdp->membase);
4079 if (brdp->iosize > 0)
4080 release_region(brdp->iobase, brdp->iosize);
4082 stli_brds[brdp->brdnr] = NULL;
4086 static struct pci_driver stli_pcidriver = {
4087 .name = "istallion",
4088 .id_table = istallion_pci_tbl,
4089 .probe = stli_pciprobe,
4090 .remove = __devexit_p(stli_pciremove)
4092 /*****************************************************************************/
4095 * Allocate a new board structure. Fill out the basic info in it.
4098 static stlibrd_t *stli_allocbrd(void)
4102 brdp = kzalloc(sizeof(stlibrd_t), GFP_KERNEL);
4104 printk(KERN_ERR "STALLION: failed to allocate memory "
4105 "(size=%Zd)\n", sizeof(stlibrd_t));
4108 brdp->magic = STLI_BOARDMAGIC;
4112 /*****************************************************************************/
4115 * Scan through all the boards in the configuration and see what we
4119 static int stli_initbrds(void)
4121 stlibrd_t *brdp, *nxtbrdp;
4125 if (stli_nrbrds > STL_MAXBRDS) {
4126 printk(KERN_INFO "STALLION: too many boards in configuration "
4127 "table, truncating to %d\n", STL_MAXBRDS);
4128 stli_nrbrds = STL_MAXBRDS;
4132 * Firstly scan the list of static boards configured. Allocate
4133 * resources and initialize the boards as found. If this is a
4134 * module then let the module args override static configuration.
4136 for (i = 0; (i < stli_nrbrds); i++) {
4137 confp = &stli_brdconf[i];
4138 stli_parsebrd(confp, stli_brdsp[i]);
4139 if ((brdp = stli_allocbrd()) == NULL)
4142 brdp->brdtype = confp->brdtype;
4143 brdp->iobase = confp->ioaddr1;
4144 brdp->memaddr = confp->memaddr;
4149 * Static configuration table done, so now use dynamic methods to
4150 * see if any more boards should be configured.
4154 stli_findeisabrds();
4156 retval = pci_register_driver(&stli_pcidriver);
4157 /* TODO: check retval and do something */
4160 * All found boards are initialized. Now for a little optimization, if
4161 * no boards are sharing the "shared memory" regions then we can just
4162 * leave them all enabled. This is in fact the usual case.
4165 if (stli_nrbrds > 1) {
4166 for (i = 0; (i < stli_nrbrds); i++) {
4167 brdp = stli_brds[i];
4170 for (j = i + 1; (j < stli_nrbrds); j++) {
4171 nxtbrdp = stli_brds[j];
4172 if (nxtbrdp == NULL)
4174 if ((brdp->membase >= nxtbrdp->membase) &&
4175 (brdp->membase <= (nxtbrdp->membase +
4176 nxtbrdp->memsize - 1))) {
4184 if (stli_shared == 0) {
4185 for (i = 0; (i < stli_nrbrds); i++) {
4186 brdp = stli_brds[i];
4189 if (brdp->state & BST_FOUND) {
4191 brdp->enable = NULL;
4192 brdp->disable = NULL;
4200 /*****************************************************************************/
4203 * Code to handle an "staliomem" read operation. This device is the
4204 * contents of the board shared memory. It is used for down loading
4205 * the slave image (and debugging :-)
4208 static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp)
4210 unsigned long flags;
4211 void __iomem *memptr;
4217 brdnr = iminor(fp->f_path.dentry->d_inode);
4218 if (brdnr >= stli_nrbrds)
4220 brdp = stli_brds[brdnr];
4223 if (brdp->state == 0)
4225 if (off >= brdp->memsize || off + count < off)
4228 size = MIN(count, (brdp->memsize - off));
4231 * Copy the data a page at a time
4234 p = (void *)__get_free_page(GFP_KERNEL);
4239 spin_lock_irqsave(&brd_lock, flags);
4241 memptr = EBRDGETMEMPTR(brdp, off);
4242 n = MIN(size, (brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
4243 n = MIN(n, PAGE_SIZE);
4244 memcpy_fromio(p, memptr, n);
4246 spin_unlock_irqrestore(&brd_lock, flags);
4247 if (copy_to_user(buf, p, n)) {
4257 free_page((unsigned long)p);
4261 /*****************************************************************************/
4264 * Code to handle an "staliomem" write operation. This device is the
4265 * contents of the board shared memory. It is used for down loading
4266 * the slave image (and debugging :-)
4268 * FIXME: copy under lock
4271 static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp)
4273 unsigned long flags;
4274 void __iomem *memptr;
4281 brdnr = iminor(fp->f_path.dentry->d_inode);
4283 if (brdnr >= stli_nrbrds)
4285 brdp = stli_brds[brdnr];
4288 if (brdp->state == 0)
4290 if (off >= brdp->memsize || off + count < off)
4293 chbuf = (char __user *) buf;
4294 size = MIN(count, (brdp->memsize - off));
4297 * Copy the data a page at a time
4300 p = (void *)__get_free_page(GFP_KERNEL);
4305 n = MIN(size, (brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
4306 n = MIN(n, PAGE_SIZE);
4307 if (copy_from_user(p, chbuf, n)) {
4312 spin_lock_irqsave(&brd_lock, flags);
4314 memptr = EBRDGETMEMPTR(brdp, off);
4315 memcpy_toio(memptr, p, n);
4317 spin_unlock_irqrestore(&brd_lock, flags);
4323 free_page((unsigned long) p);
4328 /*****************************************************************************/
4331 * Return the board stats structure to user app.
4334 static int stli_getbrdstats(combrd_t __user *bp)
4339 if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t)))
4341 if (stli_brdstats.brd >= STL_MAXBRDS)
4343 brdp = stli_brds[stli_brdstats.brd];
4347 memset(&stli_brdstats, 0, sizeof(combrd_t));
4348 stli_brdstats.brd = brdp->brdnr;
4349 stli_brdstats.type = brdp->brdtype;
4350 stli_brdstats.hwid = 0;
4351 stli_brdstats.state = brdp->state;
4352 stli_brdstats.ioaddr = brdp->iobase;
4353 stli_brdstats.memaddr = brdp->memaddr;
4354 stli_brdstats.nrpanels = brdp->nrpanels;
4355 stli_brdstats.nrports = brdp->nrports;
4356 for (i = 0; (i < brdp->nrpanels); i++) {
4357 stli_brdstats.panels[i].panel = i;
4358 stli_brdstats.panels[i].hwid = brdp->panelids[i];
4359 stli_brdstats.panels[i].nrports = brdp->panels[i];
4362 if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t)))
4367 /*****************************************************************************/
4370 * Resolve the referenced port number into a port struct pointer.
4373 static stliport_t *stli_getport(int brdnr, int panelnr, int portnr)
4378 if (brdnr < 0 || brdnr >= STL_MAXBRDS)
4380 brdp = stli_brds[brdnr];
4383 for (i = 0; (i < panelnr); i++)
4384 portnr += brdp->panels[i];
4385 if ((portnr < 0) || (portnr >= brdp->nrports))
4387 return brdp->ports[portnr];
4390 /*****************************************************************************/
4393 * Return the port stats structure to user app. A NULL port struct
4394 * pointer passed in means that we need to find out from the app
4395 * what port to get stats for (used through board control device).
4398 static int stli_portcmdstats(stliport_t *portp)
4400 unsigned long flags;
4404 memset(&stli_comstats, 0, sizeof(comstats_t));
4408 brdp = stli_brds[portp->brdnr];
4412 if (brdp->state & BST_STARTED) {
4413 if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS,
4414 &stli_cdkstats, sizeof(asystats_t), 1)) < 0)
4417 memset(&stli_cdkstats, 0, sizeof(asystats_t));
4420 stli_comstats.brd = portp->brdnr;
4421 stli_comstats.panel = portp->panelnr;
4422 stli_comstats.port = portp->portnr;
4423 stli_comstats.state = portp->state;
4424 stli_comstats.flags = portp->flags;
4426 spin_lock_irqsave(&brd_lock, flags);
4427 if (portp->tty != NULL) {
4428 if (portp->tty->driver_data == portp) {
4429 stli_comstats.ttystate = portp->tty->flags;
4430 stli_comstats.rxbuffered = -1;
4431 if (portp->tty->termios != NULL) {
4432 stli_comstats.cflags = portp->tty->termios->c_cflag;
4433 stli_comstats.iflags = portp->tty->termios->c_iflag;
4434 stli_comstats.oflags = portp->tty->termios->c_oflag;
4435 stli_comstats.lflags = portp->tty->termios->c_lflag;
4439 spin_unlock_irqrestore(&brd_lock, flags);
4441 stli_comstats.txtotal = stli_cdkstats.txchars;
4442 stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover;
4443 stli_comstats.txbuffered = stli_cdkstats.txringq;
4444 stli_comstats.rxbuffered += stli_cdkstats.rxringq;
4445 stli_comstats.rxoverrun = stli_cdkstats.overruns;
4446 stli_comstats.rxparity = stli_cdkstats.parity;
4447 stli_comstats.rxframing = stli_cdkstats.framing;
4448 stli_comstats.rxlost = stli_cdkstats.ringover;
4449 stli_comstats.rxbreaks = stli_cdkstats.rxbreaks;
4450 stli_comstats.txbreaks = stli_cdkstats.txbreaks;
4451 stli_comstats.txxon = stli_cdkstats.txstart;
4452 stli_comstats.txxoff = stli_cdkstats.txstop;
4453 stli_comstats.rxxon = stli_cdkstats.rxstart;
4454 stli_comstats.rxxoff = stli_cdkstats.rxstop;
4455 stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2;
4456 stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff;
4457 stli_comstats.modem = stli_cdkstats.dcdcnt;
4458 stli_comstats.hwid = stli_cdkstats.hwid;
4459 stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals);
4464 /*****************************************************************************/
4467 * Return the port stats structure to user app. A NULL port struct
4468 * pointer passed in means that we need to find out from the app
4469 * what port to get stats for (used through board control device).
4472 static int stli_getportstats(stliport_t *portp, comstats_t __user *cp)
4478 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4480 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4481 stli_comstats.port);
4486 brdp = stli_brds[portp->brdnr];
4490 if ((rc = stli_portcmdstats(portp)) < 0)
4493 return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ?
4497 /*****************************************************************************/
4500 * Clear the port stats structure. We also return it zeroed out...
4503 static int stli_clrportstats(stliport_t *portp, comstats_t __user *cp)
4509 if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
4511 portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
4512 stli_comstats.port);
4517 brdp = stli_brds[portp->brdnr];
4521 if (brdp->state & BST_STARTED) {
4522 if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0)
4526 memset(&stli_comstats, 0, sizeof(comstats_t));
4527 stli_comstats.brd = portp->brdnr;
4528 stli_comstats.panel = portp->panelnr;
4529 stli_comstats.port = portp->portnr;
4531 if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t)))
4536 /*****************************************************************************/
4539 * Return the entire driver ports structure to a user app.
4542 static int stli_getportstruct(stliport_t __user *arg)
4546 if (copy_from_user(&stli_dummyport, arg, sizeof(stliport_t)))
4548 portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr,
4549 stli_dummyport.portnr);
4552 if (copy_to_user(arg, portp, sizeof(stliport_t)))
4557 /*****************************************************************************/
4560 * Return the entire driver board structure to a user app.
4563 static int stli_getbrdstruct(stlibrd_t __user *arg)
4567 if (copy_from_user(&stli_dummybrd, arg, sizeof(stlibrd_t)))
4569 if ((stli_dummybrd.brdnr < 0) || (stli_dummybrd.brdnr >= STL_MAXBRDS))
4571 brdp = stli_brds[stli_dummybrd.brdnr];
4574 if (copy_to_user(arg, brdp, sizeof(stlibrd_t)))
4579 /*****************************************************************************/
4582 * The "staliomem" device is also required to do some special operations on
4583 * the board. We need to be able to send an interrupt to the board,
4584 * reset it, and start/stop it.
4587 static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg)
4590 int brdnr, rc, done;
4591 void __user *argp = (void __user *)arg;
4594 * First up handle the board independent ioctls.
4600 case COM_GETPORTSTATS:
4601 rc = stli_getportstats(NULL, argp);
4604 case COM_CLRPORTSTATS:
4605 rc = stli_clrportstats(NULL, argp);
4608 case COM_GETBRDSTATS:
4609 rc = stli_getbrdstats(argp);
4613 rc = stli_getportstruct(argp);
4617 rc = stli_getbrdstruct(argp);
4626 * Now handle the board specific ioctls. These all depend on the
4627 * minor number of the device they were called from.
4630 if (brdnr >= STL_MAXBRDS)
4632 brdp = stli_brds[brdnr];
4635 if (brdp->state == 0)
4643 rc = stli_startbrd(brdp);
4646 brdp->state &= ~BST_STARTED;
4649 brdp->state &= ~BST_STARTED;
4651 if (stli_shared == 0) {
4652 if (brdp->reenable != NULL)
4653 (* brdp->reenable)(brdp);
4663 static const struct tty_operations stli_ops = {
4665 .close = stli_close,
4666 .write = stli_write,
4667 .put_char = stli_putchar,
4668 .flush_chars = stli_flushchars,
4669 .write_room = stli_writeroom,
4670 .chars_in_buffer = stli_charsinbuffer,
4671 .ioctl = stli_ioctl,
4672 .set_termios = stli_settermios,
4673 .throttle = stli_throttle,
4674 .unthrottle = stli_unthrottle,
4676 .start = stli_start,
4677 .hangup = stli_hangup,
4678 .flush_buffer = stli_flushbuffer,
4679 .break_ctl = stli_breakctl,
4680 .wait_until_sent = stli_waituntilsent,
4681 .send_xchar = stli_sendxchar,
4682 .read_proc = stli_readproc,
4683 .tiocmget = stli_tiocmget,
4684 .tiocmset = stli_tiocmset,
4687 /*****************************************************************************/
4689 static int __init stli_init(void)
4692 printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion);
4694 spin_lock_init(&stli_lock);
4695 spin_lock_init(&brd_lock);
4699 stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS);
4704 * Allocate a temporary write buffer.
4706 stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL);
4707 if (!stli_txcookbuf)
4708 printk(KERN_ERR "STALLION: failed to allocate memory "
4709 "(size=%d)\n", STLI_TXBUFSIZE);
4712 * Set up a character driver for the shared memory region. We need this
4713 * to down load the slave code image. Also it is a useful debugging tool.
4715 if (register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem))
4716 printk(KERN_ERR "STALLION: failed to register serial memory "
4719 istallion_class = class_create(THIS_MODULE, "staliomem");
4720 for (i = 0; i < 4; i++)
4721 class_device_create(istallion_class, NULL,
4722 MKDEV(STL_SIOMEMMAJOR, i),
4723 NULL, "staliomem%d", i);
4726 * Set up the tty driver structure and register us as a driver.
4728 stli_serial->owner = THIS_MODULE;
4729 stli_serial->driver_name = stli_drvname;
4730 stli_serial->name = stli_serialname;
4731 stli_serial->major = STL_SERIALMAJOR;
4732 stli_serial->minor_start = 0;
4733 stli_serial->type = TTY_DRIVER_TYPE_SERIAL;
4734 stli_serial->subtype = SERIAL_TYPE_NORMAL;
4735 stli_serial->init_termios = stli_deftermios;
4736 stli_serial->flags = TTY_DRIVER_REAL_RAW;
4737 tty_set_operations(stli_serial, &stli_ops);
4739 if (tty_register_driver(stli_serial)) {
4740 put_tty_driver(stli_serial);
4741 printk(KERN_ERR "STALLION: failed to register serial driver\n");
4747 /*****************************************************************************/