1 /*****************************************************************************/
4 * stallion.c -- stallion multiport serial driver.
6 * Copyright (c) 1995-1996 Greg Ungerer (gerg@stallion.oz.au).
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by Greg Ungerer.
20 * 4. Neither the name of the author nor the names of any co-contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * $FreeBSD: src/sys/i386/isa/stallion.c,v 1.39.2.2 2001/08/30 12:29:57 murray Exp $
39 /*****************************************************************************/
44 #include "opt_compat.h"
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/kernel.h>
49 #include <sys/malloc.h>
54 #include <sys/fcntl.h>
55 #include <sys/thread2.h>
56 #include <bus/isa/isa_device.h>
57 #include <machine_base/isa/ic/scd1400.h>
58 #include <machine_base/isa/ic/sc26198.h>
59 #include <machine/comstats.h>
62 #include <bus/pci/pcivar.h>
63 #include <bus/pci/pcireg.h>
68 /*****************************************************************************/
71 * Define the version level of the kernel - so we can compile in the
72 * appropriate bits of code. By default this will compile for a 2.1
83 /*****************************************************************************/
86 * Define different board types. At the moment I have only declared
87 * those boards that this driver supports. But I will use the standard
88 * "assigned" board numbers. In the future this driver will support
89 * some of the other Stallion boards. Currently supported boards are
90 * abbreviated as EIO = EasyIO and ECH = EasyConnection 8/32.
96 #define BRD_ECH64PCI 27
97 #define BRD_EASYIOPCI 28
100 * When using the BSD "config" stuff there is no easy way to specifiy
101 * a secondary IO address region. So it is hard wired here. Also the
102 * shared interrupt information is hard wired here...
104 static unsigned int stl_ioshared = 0x280;
105 static unsigned int stl_irqshared = 0;
107 /*****************************************************************************/
110 * Define important driver limitations.
112 #define STL_MAXBRDS 8
113 #define STL_MAXPANELS 4
114 #define STL_MAXBANKS 8
115 #define STL_PORTSPERPANEL 16
116 #define STL_PORTSPERBRD 64
119 * Define the important minor number break down bits. These have been
120 * chosen to be "compatible" with the standard sio driver minor numbers.
121 * Extra high bits are used to distinguish between boards.
123 #define STL_CALLOUTDEV 0x80
124 #define STL_CTRLLOCK 0x40
125 #define STL_CTRLINIT 0x20
126 #define STL_CTRLDEV (STL_CTRLLOCK | STL_CTRLINIT)
128 #define STL_MEMDEV 0x07000000
130 #define STL_DEFSPEED TTYDEF_SPEED
131 #define STL_DEFCFLAG (CS8 | CREAD | HUPCL)
134 * I haven't really decided (or measured) what buffer sizes give
135 * a good balance between performance and memory usage. These seem
136 * to work pretty well...
138 #define STL_RXBUFSIZE 2048
139 #define STL_TXBUFSIZE 2048
141 #define STL_TXBUFLOW (STL_TXBUFSIZE / 4)
142 #define STL_RXBUFHIGH (3 * STL_RXBUFSIZE / 4)
144 /*****************************************************************************/
147 * Define our local driver identity first. Set up stuff to deal with
148 * all the local structures required by a serial tty driver.
150 static const char stl_drvname[] = "stl";
151 static const char stl_longdrvname[] = "Stallion Multiport Serial Driver";
152 static const char stl_drvversion[] = "2.0.0";
153 static int stl_brdprobed[STL_MAXBRDS];
155 static int stl_nrbrds = 0;
156 static int stl_doingtimeout = 0;
157 static struct callout stl_poll_ch;
159 static const char __file__[] = /*__FILE__*/ "stallion.c";
162 * Define global stats structures. Not used often, and can be
163 * re-used for each stats call.
165 static combrd_t stl_brdstats;
166 static comstats_t stl_comstats;
168 /*****************************************************************************/
171 * Define a set of structures to hold all the board/panel/port info
172 * for our ports. These will be dynamically allocated as required.
176 * Define a ring queue structure for each port. This will hold the
177 * TX data waiting to be output. Characters are fed into this buffer
178 * from the line discipline (or even direct from user space!) and
179 * then fed into the UARTs during interrupts. Will use a clasic ring
180 * queue here for this. The good thing about this type of ring queue
181 * is that the head and tail pointers can be updated without interrupt
182 * protection - since "write" code only needs to change the head, and
183 * interrupt code only needs to change the tail.
193 * Port, panel and board structures to hold status info about each.
194 * The board structure contains pointers to structures for each panel
195 * connected to it, and in turn each panel structure contains pointers
196 * for each port structure for each port on that panel. Note that
197 * the port structure also contains the board and panel number that it
198 * is associated with, this makes it (fairly) easy to get back to the
199 * board/panel info for a port. Also note that the tty struct is at
200 * the top of the structure, this is important, since the code uses
201 * this fact to get the port struct pointer from the tty struct
204 typedef struct stlport {
222 unsigned int rxignoremsk;
223 unsigned int rxmarkmsk;
224 unsigned int crenable;
227 struct termios initintios;
228 struct termios initouttios;
229 struct termios lockintios;
230 struct termios lockouttios;
231 struct timeval timestamp;
236 struct callout dtr_ch;
239 typedef struct stlpanel {
246 unsigned int ackmask;
247 void (*isr)(struct stlpanel *panelp, unsigned int iobase);
249 stlport_t *ports[STL_PORTSPERPANEL];
252 typedef struct stlbrd {
262 unsigned int ioaddr1;
263 unsigned int ioaddr2;
264 unsigned int iostatus;
266 unsigned int ioctrlval;
269 void (*isr)(struct stlbrd *brdp);
270 unsigned int bnkpageaddr[STL_MAXBANKS];
271 unsigned int bnkstataddr[STL_MAXBANKS];
272 stlpanel_t *bnk2panel[STL_MAXBANKS];
273 stlpanel_t *panels[STL_MAXPANELS];
274 stlport_t *ports[STL_PORTSPERBRD];
277 static stlbrd_t *stl_brds[STL_MAXBRDS];
280 * Per board state flags. Used with the state field of the board struct.
281 * Not really much here yet!
283 #define BRD_FOUND 0x1
286 * Define the port structure state flags. These set of flags are
287 * modified at interrupt time - so setting and reseting them needs
290 #define ASY_TXLOW 0x1
291 #define ASY_RXDATA 0x2
292 #define ASY_DCDCHANGE 0x4
293 #define ASY_DTRWAIT 0x8
294 #define ASY_RTSFLOW 0x10
295 #define ASY_RTSFLOWMODE 0x20
296 #define ASY_CTSFLOWMODE 0x40
297 #define ASY_TXFLOWED 0x80
298 #define ASY_TXBUSY 0x100
299 #define ASY_TXEMPTY 0x200
301 #define ASY_ACTIVE (ASY_TXLOW | ASY_RXDATA | ASY_DCDCHANGE)
304 * Define an array of board names as printable strings. Handy for
305 * referencing boards when printing trace and stuff.
307 static char *stl_brdnames[] = {
339 /*****************************************************************************/
342 * Hardware ID bits for the EasyIO and ECH boards. These defines apply
343 * to the directly accessable io ports of these boards (not the cd1400
344 * uarts - they are in scd1400.h).
346 #define EIO_8PORTRS 0x04
347 #define EIO_4PORTRS 0x05
348 #define EIO_8PORTDI 0x00
349 #define EIO_8PORTM 0x06
351 #define EIO_IDBITMASK 0x07
353 #define EIO_BRDMASK 0xf0
356 #define ID_BRD16 0x30
358 #define EIO_INTRPEND 0x08
359 #define EIO_INTEDGE 0x00
360 #define EIO_INTLEVEL 0x08
363 #define ECH_IDBITMASK 0xe0
364 #define ECH_BRDENABLE 0x08
365 #define ECH_BRDDISABLE 0x00
366 #define ECH_INTENABLE 0x01
367 #define ECH_INTDISABLE 0x00
368 #define ECH_INTLEVEL 0x02
369 #define ECH_INTEDGE 0x00
370 #define ECH_INTRPEND 0x01
371 #define ECH_BRDRESET 0x01
373 #define ECHMC_INTENABLE 0x01
374 #define ECHMC_BRDRESET 0x02
376 #define ECH_PNLSTATUS 2
377 #define ECH_PNL16PORT 0x20
378 #define ECH_PNLIDMASK 0x07
379 #define ECH_PNLXPID 0x40
380 #define ECH_PNLINTRPEND 0x80
381 #define ECH_ADDR2MASK 0x1e0
383 #define EIO_CLK 25000000
384 #define EIO_CLK8M 20000000
385 #define ECH_CLK EIO_CLK
388 * Define the PCI vendor and device ID for Stallion PCI boards.
390 #define STL_PCINSVENDID 0x100b
391 #define STL_PCINSDEVID 0xd001
393 #define STL_PCIVENDID 0x124d
394 #define STL_PCI32DEVID 0x0000
395 #define STL_PCI64DEVID 0x0002
396 #define STL_PCIEIODEVID 0x0003
398 #define STL_PCIBADCLASS 0x0101
400 typedef struct stlpcibrd {
401 unsigned short vendid;
402 unsigned short devid;
406 static stlpcibrd_t stl_pcibrds[] = {
407 { STL_PCIVENDID, STL_PCI64DEVID, BRD_ECH64PCI },
408 { STL_PCIVENDID, STL_PCIEIODEVID, BRD_EASYIOPCI },
409 { STL_PCIVENDID, STL_PCI32DEVID, BRD_ECHPCI },
410 { STL_PCINSVENDID, STL_PCINSDEVID, BRD_ECHPCI },
413 static int stl_nrpcibrds = sizeof(stl_pcibrds) / sizeof(stlpcibrd_t);
415 /*****************************************************************************/
418 * Define the vector mapping bits for the programmable interrupt board
419 * hardware. These bits encode the interrupt for the board to use - it
420 * is software selectable (except the EIO-8M).
422 static unsigned char stl_vecmap[] = {
423 0xff, 0xff, 0xff, 0x04, 0x06, 0x05, 0xff, 0x07,
424 0xff, 0xff, 0x00, 0x02, 0x01, 0xff, 0xff, 0x03
428 * Set up enable and disable macros for the ECH boards. They require
429 * the secondary io address space to be activated and deactivated.
430 * This way all ECH boards can share their secondary io region.
431 * If this is an ECH-PCI board then also need to set the page pointer
432 * to point to the correct page.
434 #define BRDENABLE(brdnr,pagenr) \
435 if (stl_brds[(brdnr)]->brdtype == BRD_ECH) \
436 outb(stl_brds[(brdnr)]->ioctrl, \
437 (stl_brds[(brdnr)]->ioctrlval | ECH_BRDENABLE));\
438 else if (stl_brds[(brdnr)]->brdtype == BRD_ECHPCI) \
439 outb(stl_brds[(brdnr)]->ioctrl, (pagenr));
441 #define BRDDISABLE(brdnr) \
442 if (stl_brds[(brdnr)]->brdtype == BRD_ECH) \
443 outb(stl_brds[(brdnr)]->ioctrl, \
444 (stl_brds[(brdnr)]->ioctrlval | ECH_BRDDISABLE));
447 * Define some spare buffer space for un-wanted received characters.
449 static char stl_unwanted[SC26198_RXFIFOSIZE];
451 /*****************************************************************************/
454 * Define macros to extract a brd and port number from a minor number.
455 * This uses the extended minor number range in the upper 2 bytes of
456 * the device number. This gives us plenty of minor numbers to play
459 #define MKDEV2BRD(m) ((minor(m) & 0x00700000) >> 20)
460 #define MKDEV2PORT(m) ((minor(m) & 0x1f) | ((minor(m) & 0x00010000) >> 11))
463 * Define some handy local macros...
466 #define MIN(a,b) (((a) <= (b)) ? (a) : (b))
469 /*****************************************************************************/
472 * Declare all those functions in this driver! First up is the set of
473 * externally visible functions.
476 static int stlprobe(struct isa_device *idp);
477 static int stlattach(struct isa_device *idp);
479 STATIC d_open_t stlopen;
480 STATIC d_close_t stlclose;
481 STATIC d_ioctl_t stlioctl;
484 * Internal function prototypes.
486 static stlport_t *stl_dev2port(cdev_t dev);
487 static int stl_findfreeunit(void);
488 static int stl_rawopen(stlport_t *portp);
489 static int stl_rawclose(stlport_t *portp);
490 static void stl_flush(stlport_t *portp, int flag);
491 static int stl_param(struct tty *tp, struct termios *tiosp);
492 static void stl_start(struct tty *tp);
493 static void stl_stop(struct tty *tp, int);
494 static void stl_ttyoptim(stlport_t *portp, struct termios *tiosp);
495 static void stl_dotimeout(void);
496 static void stl_poll(void *arg);
497 static void stl_rxprocess(stlport_t *portp);
498 static void stl_flowcontrol(stlport_t *portp, int hw, int sw);
499 static void stl_dtrwakeup(void *arg);
500 static int stl_brdinit(stlbrd_t *brdp);
501 static int stl_initeio(stlbrd_t *brdp);
502 static int stl_initech(stlbrd_t *brdp);
503 static int stl_initports(stlbrd_t *brdp, stlpanel_t *panelp);
504 static void stl_eiointr(stlbrd_t *brdp);
505 static void stl_echatintr(stlbrd_t *brdp);
506 static void stl_echmcaintr(stlbrd_t *brdp);
507 static void stl_echpciintr(stlbrd_t *brdp);
508 static void stl_echpci64intr(stlbrd_t *brdp);
509 static int stl_memioctl(cdev_t dev, unsigned long cmd, caddr_t data,
511 static int stl_getbrdstats(caddr_t data);
512 static int stl_getportstats(stlport_t *portp, caddr_t data);
513 static int stl_clrportstats(stlport_t *portp, caddr_t data);
514 static stlport_t *stl_getport(int brdnr, int panelnr, int portnr);
515 static void stlintr(void *);
518 static const char *stlpciprobe(pcici_t tag, pcidi_t type);
519 static void stlpciattach(pcici_t tag, int unit);
520 static void stlpciintr(void * arg);
524 * CD1400 uart specific handling functions.
526 static void stl_cd1400setreg(stlport_t *portp, int regnr, int value);
527 static int stl_cd1400getreg(stlport_t *portp, int regnr);
528 static int stl_cd1400updatereg(stlport_t *portp, int regnr, int value);
529 static int stl_cd1400panelinit(stlbrd_t *brdp, stlpanel_t *panelp);
530 static void stl_cd1400portinit(stlbrd_t *brdp, stlpanel_t *panelp, stlport_t *portp);
531 static int stl_cd1400setport(stlport_t *portp, struct termios *tiosp);
532 static int stl_cd1400getsignals(stlport_t *portp);
533 static void stl_cd1400setsignals(stlport_t *portp, int dtr, int rts);
534 static void stl_cd1400ccrwait(stlport_t *portp);
535 static void stl_cd1400enablerxtx(stlport_t *portp, int rx, int tx);
536 static void stl_cd1400startrxtx(stlport_t *portp, int rx, int tx);
537 static void stl_cd1400disableintrs(stlport_t *portp);
538 static void stl_cd1400sendbreak(stlport_t *portp, long len);
539 static void stl_cd1400sendflow(stlport_t *portp, int hw, int sw);
540 static int stl_cd1400datastate(stlport_t *portp);
541 static void stl_cd1400flush(stlport_t *portp, int flag);
542 static __inline void stl_cd1400txisr(stlpanel_t *panelp, int ioaddr);
543 static void stl_cd1400rxisr(stlpanel_t *panelp, int ioaddr);
544 static void stl_cd1400mdmisr(stlpanel_t *panelp, int ioaddr);
545 static void stl_cd1400eiointr(stlpanel_t *panelp, unsigned int iobase);
546 static void stl_cd1400echintr(stlpanel_t *panelp, unsigned int iobase);
549 * SC26198 uart specific handling functions.
551 static void stl_sc26198setreg(stlport_t *portp, int regnr, int value);
552 static int stl_sc26198getreg(stlport_t *portp, int regnr);
553 static int stl_sc26198updatereg(stlport_t *portp, int regnr, int value);
554 static int stl_sc26198getglobreg(stlport_t *portp, int regnr);
555 static int stl_sc26198panelinit(stlbrd_t *brdp, stlpanel_t *panelp);
556 static void stl_sc26198portinit(stlbrd_t *brdp, stlpanel_t *panelp, stlport_t *portp);
557 static int stl_sc26198setport(stlport_t *portp, struct termios *tiosp);
558 static int stl_sc26198getsignals(stlport_t *portp);
559 static void stl_sc26198setsignals(stlport_t *portp, int dtr, int rts);
560 static void stl_sc26198enablerxtx(stlport_t *portp, int rx, int tx);
561 static void stl_sc26198startrxtx(stlport_t *portp, int rx, int tx);
562 static void stl_sc26198disableintrs(stlport_t *portp);
563 static void stl_sc26198sendbreak(stlport_t *portp, long len);
564 static void stl_sc26198sendflow(stlport_t *portp, int hw, int sw);
565 static int stl_sc26198datastate(stlport_t *portp);
566 static void stl_sc26198flush(stlport_t *portp, int flag);
567 static void stl_sc26198txunflow(stlport_t *portp);
568 static void stl_sc26198wait(stlport_t *portp);
569 static void stl_sc26198intr(stlpanel_t *panelp, unsigned int iobase);
570 static void stl_sc26198txisr(stlport_t *port);
571 static void stl_sc26198rxisr(stlport_t *port, unsigned int iack);
572 static void stl_sc26198rxgoodchars(stlport_t *portp);
573 static void stl_sc26198rxbadchars(stlport_t *portp);
574 static void stl_sc26198otherisr(stlport_t *port, unsigned int iack);
576 /*****************************************************************************/
579 * Generic UART support structure.
581 typedef struct uart {
582 int (*panelinit)(stlbrd_t *brdp, stlpanel_t *panelp);
583 void (*portinit)(stlbrd_t *brdp, stlpanel_t *panelp, stlport_t *portp);
584 int (*setport)(stlport_t *portp, struct termios *tiosp);
585 int (*getsignals)(stlport_t *portp);
586 void (*setsignals)(stlport_t *portp, int dtr, int rts);
587 void (*enablerxtx)(stlport_t *portp, int rx, int tx);
588 void (*startrxtx)(stlport_t *portp, int rx, int tx);
589 void (*disableintrs)(stlport_t *portp);
590 void (*sendbreak)(stlport_t *portp, long len);
591 void (*sendflow)(stlport_t *portp, int hw, int sw);
592 void (*flush)(stlport_t *portp, int flag);
593 int (*datastate)(stlport_t *portp);
594 void (*intr)(stlpanel_t *panelp, unsigned int iobase);
598 * Define some macros to make calling these functions nice and clean.
600 #define stl_panelinit (* ((uart_t *) panelp->uartp)->panelinit)
601 #define stl_portinit (* ((uart_t *) portp->uartp)->portinit)
602 #define stl_setport (* ((uart_t *) portp->uartp)->setport)
603 #define stl_getsignals (* ((uart_t *) portp->uartp)->getsignals)
604 #define stl_setsignals (* ((uart_t *) portp->uartp)->setsignals)
605 #define stl_enablerxtx (* ((uart_t *) portp->uartp)->enablerxtx)
606 #define stl_startrxtx (* ((uart_t *) portp->uartp)->startrxtx)
607 #define stl_disableintrs (* ((uart_t *) portp->uartp)->disableintrs)
608 #define stl_sendbreak (* ((uart_t *) portp->uartp)->sendbreak)
609 #define stl_sendflow (* ((uart_t *) portp->uartp)->sendflow)
610 #define stl_uartflush (* ((uart_t *) portp->uartp)->flush)
611 #define stl_datastate (* ((uart_t *) portp->uartp)->datastate)
613 /*****************************************************************************/
616 * CD1400 UART specific data initialization.
618 static uart_t stl_cd1400uart = {
622 stl_cd1400getsignals,
623 stl_cd1400setsignals,
624 stl_cd1400enablerxtx,
626 stl_cd1400disableintrs,
635 * Define the offsets within the register bank of a cd1400 based panel.
636 * These io address offsets are common to the EasyIO board as well.
644 #define EREG_BANKSIZE 8
646 #define CD1400_CLK 25000000
647 #define CD1400_CLK8M 20000000
650 * Define the cd1400 baud rate clocks. These are used when calculating
651 * what clock and divisor to use for the required baud rate. Also
652 * define the maximum baud rate allowed, and the default base baud.
654 static int stl_cd1400clkdivs[] = {
655 CD1400_CLK0, CD1400_CLK1, CD1400_CLK2, CD1400_CLK3, CD1400_CLK4
659 * Define the maximum baud rate of the cd1400 devices.
661 #define CD1400_MAXBAUD 230400
663 /*****************************************************************************/
666 * SC26198 UART specific data initization.
668 static uart_t stl_sc26198uart = {
669 stl_sc26198panelinit,
672 stl_sc26198getsignals,
673 stl_sc26198setsignals,
674 stl_sc26198enablerxtx,
675 stl_sc26198startrxtx,
676 stl_sc26198disableintrs,
677 stl_sc26198sendbreak,
680 stl_sc26198datastate,
685 * Define the offsets within the register bank of a sc26198 based panel.
693 #define XP_BANKSIZE 4
696 * Define the sc26198 baud rate table. Offsets within the table
697 * represent the actual baud rate selector of sc26198 registers.
699 static unsigned int sc26198_baudtable[] = {
700 50, 75, 150, 200, 300, 450, 600, 900, 1200, 1800, 2400, 3600,
701 4800, 7200, 9600, 14400, 19200, 28800, 38400, 57600, 115200,
705 #define SC26198_NRBAUDS (sizeof(sc26198_baudtable) / sizeof(unsigned int))
708 * Define the maximum baud rate of the sc26198 devices.
710 #define SC26198_MAXBAUD 460800
712 /*****************************************************************************/
715 * Declare the driver isa structure.
717 struct isa_driver stldriver = {
718 stlprobe, stlattach, "stl"
721 /*****************************************************************************/
726 * Declare the driver pci structure.
728 static unsigned long stl_count;
730 static struct pci_device stlpcidriver = {
738 COMPAT_PCI_DRIVER (stlpci, stlpcidriver);
742 /*****************************************************************************/
747 * FreeBSD-2.2+ kernel linkage.
750 #define CDEV_MAJOR 72
751 static struct dev_ops stl_ops = {
758 .d_kqfilter = ttykqfilter,
759 .d_revoke = ttyrevoke
762 static void stl_drvinit(void *unused)
766 SYSINIT(sidev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,stl_drvinit,NULL)
770 /*****************************************************************************/
773 * Probe for some type of EasyIO or EasyConnection 8/32 board at
774 * the supplied address. All we do is check if we can find the
775 * board ID for the board... (Note, PCI boards not checked here,
776 * they are done in the stlpciprobe() routine).
779 static int stlprobe(struct isa_device *idp)
784 kprintf("stlprobe(idp=%x): unit=%d iobase=%x\n", (int) idp,
785 idp->id_unit, idp->id_iobase);
788 if (idp->id_unit > STL_MAXBRDS)
791 status = inb(idp->id_iobase + 1);
792 if ((status & ECH_IDBITMASK) == ECH_ID) {
793 stl_brdprobed[idp->id_unit] = BRD_ECH;
797 status = inb(idp->id_iobase + 2);
798 switch (status & EIO_IDBITMASK) {
804 stl_brdprobed[idp->id_unit] = BRD_EASYIO;
813 /*****************************************************************************/
816 * Find an available internal board number (unit number). The problem
817 * is that the same unit numbers can be assigned to different boards
818 * detected during the ISA and PCI initialization phases.
821 static int stl_findfreeunit(void)
825 for (i = 0; (i < STL_MAXBRDS); i++)
826 if (stl_brds[i] == NULL)
828 return((i >= STL_MAXBRDS) ? -1 : i);
831 /*****************************************************************************/
834 * Allocate resources for and initialize the specified board.
837 static int stlattach(struct isa_device *idp)
840 int boardnr, portnr, minor_dev;
843 kprintf("stlattach(idp=%p): unit=%d iobase=%x\n", (void *) idp,
844 idp->id_unit, idp->id_iobase);
847 /* idp->id_intr = (inthand2_t *)stlintr; */
849 brdp = kmalloc(sizeof(stlbrd_t), M_TTYS, M_WAITOK | M_ZERO);
851 if ((brdp->brdnr = stl_findfreeunit()) < 0) {
852 kprintf("STALLION: too many boards found, max=%d\n",
856 if (brdp->brdnr >= stl_nrbrds)
857 stl_nrbrds = brdp->brdnr + 1;
859 brdp->unitid = idp->id_unit;
860 brdp->brdtype = stl_brdprobed[idp->id_unit];
861 brdp->ioaddr1 = idp->id_iobase;
862 brdp->ioaddr2 = stl_ioshared;
863 brdp->irq = ffs(idp->id_irq) - 1;
864 brdp->irqtype = stl_irqshared;
867 /* register devices for DEVFS */
868 boardnr = brdp->brdnr;
869 make_dev(&stl_ops, boardnr + 0x1000000, UID_ROOT, GID_WHEEL,
870 0600, "staliomem%d", boardnr);
872 for (portnr = 0, minor_dev = boardnr * 0x100000;
873 portnr < 32; portnr++, minor_dev++) {
875 make_dev(&stl_ops, minor_dev,
876 UID_ROOT, GID_WHEEL, 0600,
877 "ttyE%d", portnr + (boardnr * 64));
878 make_dev(&stl_ops, minor_dev + 32,
879 UID_ROOT, GID_WHEEL, 0600,
880 "ttyiE%d", portnr + (boardnr * 64));
881 make_dev(&stl_ops, minor_dev + 64,
882 UID_ROOT, GID_WHEEL, 0600,
883 "ttylE%d", portnr + (boardnr * 64));
884 make_dev(&stl_ops, minor_dev + 128,
885 UID_ROOT, GID_WHEEL, 0600,
886 "cue%d", portnr + (boardnr * 64));
887 make_dev(&stl_ops, minor_dev + 160,
888 UID_ROOT, GID_WHEEL, 0600,
889 "cuie%d", portnr + (boardnr * 64));
890 make_dev(&stl_ops, minor_dev + 192,
891 UID_ROOT, GID_WHEEL, 0600,
892 "cule%d", portnr + (boardnr * 64));
895 make_dev(&stl_ops, minor_dev + 0x10000,
896 UID_ROOT, GID_WHEEL, 0600,
897 "ttyE%d", portnr + (boardnr * 64) + 32);
898 make_dev(&stl_ops, minor_dev + 32 + 0x10000,
899 UID_ROOT, GID_WHEEL, 0600,
900 "ttyiE%d", portnr + (boardnr * 64) + 32);
901 make_dev(&stl_ops, minor_dev + 64 + 0x10000,
902 UID_ROOT, GID_WHEEL, 0600,
903 "ttylE%d", portnr + (boardnr * 64) + 32);
904 make_dev(&stl_ops, minor_dev + 128 + 0x10000,
905 UID_ROOT, GID_WHEEL, 0600,
906 "cue%d", portnr + (boardnr * 64) + 32);
907 make_dev(&stl_ops, minor_dev + 160 + 0x10000,
908 UID_ROOT, GID_WHEEL, 0600,
909 "cuie%d", portnr + (boardnr * 64) + 32);
910 make_dev(&stl_ops, minor_dev + 192 + 0x10000,
911 UID_ROOT, GID_WHEEL, 0600,
912 "cule%d", portnr + (boardnr * 64) + 32);
914 boardnr = brdp->brdnr;
915 make_dev(&stl_ops, boardnr + 0x1000000, UID_ROOT, GID_WHEEL,
916 0600, "staliomem%d", boardnr);
918 for (portnr = 0, minor_dev = boardnr * 0x100000;
919 portnr < 32; portnr++, minor_dev++) {
921 make_dev(&stl_ops, minor_dev,
922 UID_ROOT, GID_WHEEL, 0600,
923 "ttyE%d", portnr + (boardnr * 64));
924 make_dev(&stl_ops, minor_dev + 32,
925 UID_ROOT, GID_WHEEL, 0600,
926 "ttyiE%d", portnr + (boardnr * 64));
927 make_dev(&stl_ops, minor_dev + 64,
928 UID_ROOT, GID_WHEEL, 0600,
929 "ttylE%d", portnr + (boardnr * 64));
930 make_dev(&stl_ops, minor_dev + 128,
931 UID_ROOT, GID_WHEEL, 0600,
932 "cue%d", portnr + (boardnr * 64));
933 make_dev(&stl_ops, minor_dev + 160,
934 UID_ROOT, GID_WHEEL, 0600,
935 "cuie%d", portnr + (boardnr * 64));
936 make_dev(&stl_ops, minor_dev + 192,
937 UID_ROOT, GID_WHEEL, 0600,
938 "cule%d", portnr + (boardnr * 64));
941 make_dev(&stl_ops, minor_dev + 0x10000,
942 UID_ROOT, GID_WHEEL, 0600,
943 "ttyE%d", portnr + (boardnr * 64) + 32);
944 make_dev(&stl_ops, minor_dev + 32 + 0x10000,
945 UID_ROOT, GID_WHEEL, 0600,
946 "ttyiE%d", portnr + (boardnr * 64) + 32);
947 make_dev(&stl_ops, minor_dev + 64 + 0x10000,
948 UID_ROOT, GID_WHEEL, 0600,
949 "ttylE%d", portnr + (boardnr * 64) + 32);
950 make_dev(&stl_ops, minor_dev + 128 + 0x10000,
951 UID_ROOT, GID_WHEEL, 0600,
952 "cue%d", portnr + (boardnr * 64) + 32);
953 make_dev(&stl_ops, minor_dev + 160 + 0x10000,
954 UID_ROOT, GID_WHEEL, 0600,
955 "cuie%d", portnr + (boardnr * 64) + 32);
956 make_dev(&stl_ops, minor_dev + 192 + 0x10000,
957 UID_ROOT, GID_WHEEL, 0600,
958 "cule%d", portnr + (boardnr * 64) + 32);
964 /*****************************************************************************/
969 * Probe specifically for the PCI boards. We need to be a little
970 * carefull here, since it looks sort like a Nat Semi IDE chip...
973 static const char *stlpciprobe(pcici_t tag, pcidi_t type)
979 kprintf("stlpciprobe(tag=%x,type=%x)\n", (int) &tag, (int) type);
983 for (i = 0; (i < stl_nrpcibrds); i++) {
984 if (((type & 0xffff) == stl_pcibrds[i].vendid) &&
985 (((type >> 16) & 0xffff) == stl_pcibrds[i].devid)) {
986 brdtype = stl_pcibrds[i].brdtype;
994 class = pci_conf_read(tag, PCI_CLASS_REG);
995 if ((class & PCI_CLASS_MASK) == PCI_CLASS_MASS_STORAGE)
998 return(stl_brdnames[brdtype]);
1001 /*****************************************************************************/
1004 * Allocate resources for and initialize the specified PCI board.
1007 void stlpciattach(pcici_t tag, int unit)
1010 unsigned int bar[4];
1013 int boardnr, portnr, minor_dev;
1016 kprintf("stlpciattach(tag=%x,unit=%x)\n", (int) &tag, unit);
1019 brdp = kmalloc(sizeof(stlbrd_t), M_TTYS, M_WAITOK | M_ZERO);
1021 if ((unit < 0) || (unit > STL_MAXBRDS)) {
1022 kprintf("STALLION: bad PCI board unit number=%d\n", unit);
1027 * Allocate us a new driver unique unit number.
1029 if ((brdp->brdnr = stl_findfreeunit()) < 0) {
1030 kprintf("STALLION: too many boards found, max=%d\n",
1034 if (brdp->brdnr >= stl_nrbrds)
1035 stl_nrbrds = brdp->brdnr + 1;
1038 * Determine what type of PCI board this is...
1040 id = (unsigned int) pci_conf_read(tag, 0x0);
1041 for (i = 0; (i < stl_nrpcibrds); i++) {
1042 if (((id & 0xffff) == stl_pcibrds[i].vendid) &&
1043 (((id >> 16) & 0xffff) == stl_pcibrds[i].devid)) {
1044 brdp->brdtype = stl_pcibrds[i].brdtype;
1049 if (i >= stl_nrpcibrds) {
1050 kprintf("STALLION: probed PCI board unknown type=%x\n", id);
1054 for (i = 0; (i < 4); i++)
1055 bar[i] = (unsigned int) pci_conf_read(tag, 0x10 + (i * 4)) &
1058 switch (brdp->brdtype) {
1060 brdp->ioaddr1 = bar[1];
1061 brdp->ioaddr2 = bar[2];
1064 brdp->ioaddr1 = bar[2];
1065 brdp->ioaddr2 = bar[1];
1068 brdp->ioaddr1 = bar[1];
1069 brdp->ioaddr2 = bar[0];
1072 kprintf("STALLION: unknown PCI board type=%d\n", brdp->brdtype);
1077 brdp->unitid = brdp->brdnr; /* PCI units auto-assigned */
1078 brdp->irq = ((int) pci_conf_read(tag, 0x3c)) & 0xff;
1080 if (pci_map_int(tag, stlpciintr, NULL) == 0) {
1081 kprintf("STALLION: failed to map interrupt irq=%d for unit=%d\n",
1082 brdp->irq, brdp->brdnr);
1088 /* register devices for DEVFS */
1089 boardnr = brdp->brdnr;
1090 make_dev(&stl_ops, boardnr + 0x1000000, UID_ROOT, GID_WHEEL,
1091 0600, "staliomem%d", boardnr);
1093 for (portnr = 0, minor_dev = boardnr * 0x100000;
1094 portnr < 32; portnr++, minor_dev++) {
1096 make_dev(&stl_ops, minor_dev,
1097 UID_ROOT, GID_WHEEL, 0600,
1098 "ttyE%d", portnr + (boardnr * 64));
1099 make_dev(&stl_ops, minor_dev + 32,
1100 UID_ROOT, GID_WHEEL, 0600,
1101 "ttyiE%d", portnr + (boardnr * 64));
1102 make_dev(&stl_ops, minor_dev + 64,
1103 UID_ROOT, GID_WHEEL, 0600,
1104 "ttylE%d", portnr + (boardnr * 64));
1105 make_dev(&stl_ops, minor_dev + 128,
1106 UID_ROOT, GID_WHEEL, 0600,
1107 "cue%d", portnr + (boardnr * 64));
1108 make_dev(&stl_ops, minor_dev + 160,
1109 UID_ROOT, GID_WHEEL, 0600,
1110 "cuie%d", portnr + (boardnr * 64));
1111 make_dev(&stl_ops, minor_dev + 192,
1112 UID_ROOT, GID_WHEEL, 0600,
1113 "cule%d", portnr + (boardnr * 64));
1116 make_dev(&stl_ops, minor_dev + 0x10000,
1117 UID_ROOT, GID_WHEEL, 0600,
1118 "ttyE%d", portnr + (boardnr * 64) + 32);
1119 make_dev(&stl_ops, minor_dev + 32 + 0x10000,
1120 UID_ROOT, GID_WHEEL, 0600,
1121 "ttyiE%d", portnr + (boardnr * 64) + 32);
1122 make_dev(&stl_ops, minor_dev + 64 + 0x10000,
1123 UID_ROOT, GID_WHEEL, 0600,
1124 "ttylE%d", portnr + (boardnr * 64) + 32);
1125 make_dev(&stl_ops, minor_dev + 128 + 0x10000,
1126 UID_ROOT, GID_WHEEL, 0600,
1127 "cue%d", portnr + (boardnr * 64) + 32);
1128 make_dev(&stl_ops, minor_dev + 160 + 0x10000,
1129 UID_ROOT, GID_WHEEL, 0600,
1130 "cuie%d", portnr + (boardnr * 64) + 32);
1131 make_dev(&stl_ops, minor_dev + 192 + 0x10000,
1132 UID_ROOT, GID_WHEEL, 0600,
1133 "cule%d", portnr + (boardnr * 64) + 32);
1139 /*****************************************************************************/
1141 STATIC int stlopen(struct dev_open_args *ap)
1143 cdev_t dev = ap->a_head.a_dev;
1149 kprintf("stlopen(dev=%x,flag=%x,mode=%x,p=%x)\n", (int) dev, flag,
1154 * Firstly check if the supplied device number is a valid device.
1156 if (minor(dev) & STL_MEMDEV)
1159 portp = stl_dev2port(dev);
1162 if (minor(dev) & STL_CTRLDEV)
1166 callout = minor(dev) & STL_CALLOUTDEV;
1173 * Wait here for the DTR drop timeout period to expire.
1175 while (portp->state & ASY_DTRWAIT) {
1176 error = tsleep(&portp->dtrwait, PCATCH, "stldtr", 0);
1182 * We have a valid device, so now we check if it is already open.
1183 * If not then initialize the port hardware and set up the tty
1184 * struct as required.
1186 if ((tp->t_state & TS_ISOPEN) == 0) {
1187 tp->t_oproc = stl_start;
1188 tp->t_stop = stl_stop;
1189 tp->t_param = stl_param;
1191 tp->t_termios = callout ? portp->initouttios :
1195 if ((portp->sigs & TIOCM_CD) || callout)
1196 (*linesw[tp->t_line].l_modem)(tp, 1);
1199 if (portp->callout == 0) {
1204 if (portp->callout != 0) {
1205 if (ap->a_oflags & O_NONBLOCK) {
1209 error = tsleep(&portp->callout,
1210 PCATCH, "stlcall", 0);
1213 goto stlopen_restart;
1216 if ((tp->t_state & TS_XCLUDE) && priv_check_cred(ap->a_cred, PRIV_ROOT, 0)) {
1223 * If this port is not the callout device and we do not have carrier
1224 * then we need to sleep, waiting for it to be asserted.
1226 if (((tp->t_state & TS_CARR_ON) == 0) && !callout &&
1227 ((tp->t_cflag & CLOCAL) == 0) &&
1228 ((ap->a_oflags & O_NONBLOCK) == 0)) {
1230 error = tsleep(TSA_CARR_ON(tp), PCATCH, "stldcd", 0);
1234 goto stlopen_restart;
1238 * Open the line discipline.
1240 error = (*linesw[tp->t_line].l_open)(dev, tp);
1241 stl_ttyoptim(portp, &tp->t_termios);
1242 if ((tp->t_state & TS_ISOPEN) && callout)
1246 * If for any reason we get to here and the port is not actually
1247 * open then close of the physical hardware - no point leaving it
1248 * active when the open failed...
1252 if (((tp->t_state & TS_ISOPEN) == 0) && (portp->waitopens == 0))
1253 stl_rawclose(portp);
1258 /*****************************************************************************/
1260 STATIC int stlclose(struct dev_close_args *ap)
1262 cdev_t dev = ap->a_head.a_dev;
1267 kprintf("stlclose(dev=%s,flag=%x,mode=%x,p=%p)\n", devtoname(dev),
1268 flag, mode, (void *) p);
1271 if (minor(dev) & STL_MEMDEV)
1273 if (minor(dev) & STL_CTRLDEV)
1276 portp = stl_dev2port(dev);
1282 (*linesw[tp->t_line].l_close)(tp, ap->a_fflag);
1283 stl_ttyoptim(portp, &tp->t_termios);
1284 stl_rawclose(portp);
1290 /*****************************************************************************/
1294 STATIC void stl_stop(struct tty *tp, int rw)
1297 kprintf("stl_stop(tp=%x,rw=%x)\n", (int) tp, rw);
1300 stl_flush((stlport_t *) tp, rw);
1305 STATIC int stlstop(struct tty *tp, int rw)
1308 kprintf("stlstop(tp=%x,rw=%x)\n", (int) tp, rw);
1311 stl_flush((stlport_t *) tp, rw);
1317 /*****************************************************************************/
1319 STATIC int stlioctl(struct dev_ioctl_args *ap)
1321 cdev_t dev = ap->a_head.a_dev;
1322 u_long cmd = ap->a_cmd;
1323 caddr_t data = ap->a_data;
1324 struct termios *newtios, *localtios;
1330 kprintf("stlioctl(dev=%s,cmd=%lx,data=%p,flag=%x)\n",
1331 devtoname(dev), cmd, (void *) data, ap->a_fflag);
1334 if (minor(dev) & STL_MEMDEV)
1335 return(stl_memioctl(dev, cmd, data, ap->a_fflag));
1337 portp = stl_dev2port(dev);
1344 * First up handle ioctls on the control devices.
1346 if (minor(dev) & STL_CTRLDEV) {
1347 if ((minor(dev) & STL_CTRLDEV) == STL_CTRLINIT)
1348 localtios = (minor(dev) & STL_CALLOUTDEV) ?
1349 &portp->initouttios : &portp->initintios;
1350 else if ((minor(dev) & STL_CTRLDEV) == STL_CTRLLOCK)
1351 localtios = (minor(dev) & STL_CALLOUTDEV) ?
1352 &portp->lockouttios : &portp->lockintios;
1358 if ((error = priv_check_cred(ap->a_cred, PRIV_ROOT, 0)) == 0)
1359 *localtios = *((struct termios *) data);
1362 *((struct termios *) data) = *localtios;
1365 *((int *) data) = TTYDISC;
1368 bzero(data, sizeof(struct winsize));
1378 * Deal with 4.3 compatibility issues if we have too...
1380 #if defined(COMPAT_43) || defined(COMPAT_SUNOS)
1382 struct termios tios;
1383 unsigned long oldcmd;
1385 tios = tp->t_termios;
1387 if ((error = ttsetcompat(tp, &cmd, data, &tios)))
1390 data = (caddr_t) &tios;
1395 * Carry out some pre-cmd processing work first...
1396 * Hmmm, not so sure we want this, disable for now...
1398 if ((cmd == TIOCSETA) || (cmd == TIOCSETAW) || (cmd == TIOCSETAF)) {
1399 newtios = (struct termios *) data;
1400 localtios = (minor(dev) & STL_CALLOUTDEV) ?
1401 &portp->lockouttios : &portp->lockintios;
1403 newtios->c_iflag = (tp->t_iflag & localtios->c_iflag) |
1404 (newtios->c_iflag & ~localtios->c_iflag);
1405 newtios->c_oflag = (tp->t_oflag & localtios->c_oflag) |
1406 (newtios->c_oflag & ~localtios->c_oflag);
1407 newtios->c_cflag = (tp->t_cflag & localtios->c_cflag) |
1408 (newtios->c_cflag & ~localtios->c_cflag);
1409 newtios->c_lflag = (tp->t_lflag & localtios->c_lflag) |
1410 (newtios->c_lflag & ~localtios->c_lflag);
1411 for (i = 0; (i < NCCS); i++) {
1412 if (localtios->c_cc[i] != 0)
1413 newtios->c_cc[i] = tp->t_cc[i];
1415 if (localtios->c_ispeed != 0)
1416 newtios->c_ispeed = tp->t_ispeed;
1417 if (localtios->c_ospeed != 0)
1418 newtios->c_ospeed = tp->t_ospeed;
1422 * Call the line discipline and the common command processing to
1423 * process this command (if they can).
1425 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data,
1426 ap->a_fflag, ap->a_cred);
1427 if (error != ENOIOCTL)
1431 error = ttioctl(tp, cmd, data, ap->a_fflag);
1432 stl_ttyoptim(portp, &tp->t_termios);
1433 if (error != ENOIOCTL) {
1441 * Process local commands here. These are all commands that only we
1442 * can take care of (they all rely on actually doing something special
1443 * to the actual hardware).
1447 stl_sendbreak(portp, -1);
1450 stl_sendbreak(portp, -2);
1453 stl_setsignals(portp, 1, -1);
1456 stl_setsignals(portp, 0, -1);
1459 i = *((int *) data);
1460 stl_setsignals(portp, ((i & TIOCM_DTR) ? 1 : 0),
1461 ((i & TIOCM_RTS) ? 1 : 0));
1464 i = *((int *) data);
1465 stl_setsignals(portp, ((i & TIOCM_DTR) ? 1 : -1),
1466 ((i & TIOCM_RTS) ? 1 : -1));
1469 i = *((int *) data);
1470 stl_setsignals(portp, ((i & TIOCM_DTR) ? 0 : -1),
1471 ((i & TIOCM_RTS) ? 0 : -1));
1474 *((int *) data) = (stl_getsignals(portp) | TIOCM_LE);
1477 if ((error = priv_check_cred(ap->a_cred, PRIV_ROOT, 0)) == 0)
1478 portp->dtrwait = *((int *) data) * hz / 100;
1481 *((int *) data) = portp->dtrwait * 100 / hz;
1484 portp->dotimestamp = 1;
1485 *((struct timeval *) data) = portp->timestamp;
1495 /*****************************************************************************/
1498 * Convert the specified minor device number into a port struct
1499 * pointer. Return NULL if the device number is not a valid port.
1502 STATIC stlport_t *stl_dev2port(cdev_t dev)
1506 brdp = stl_brds[MKDEV2BRD(dev)];
1509 return(brdp->ports[MKDEV2PORT(dev)]);
1512 /*****************************************************************************/
1515 * Initialize the port hardware. This involves enabling the transmitter
1516 * and receiver, setting the port configuration, and setting the initial
1520 static int stl_rawopen(stlport_t *portp)
1523 kprintf("stl_rawopen(portp=%p): brdnr=%d panelnr=%d portnr=%d\n",
1524 (void *) portp, portp->brdnr, portp->panelnr, portp->portnr);
1527 stl_setport(portp, &portp->tty.t_termios);
1528 portp->sigs = stl_getsignals(portp);
1529 stl_setsignals(portp, 1, 1);
1530 stl_enablerxtx(portp, 1, 1);
1531 stl_startrxtx(portp, 1, 0);
1535 /*****************************************************************************/
1538 * Shutdown the hardware of a port. Disable its transmitter and
1539 * receiver, and maybe drop signals if appropriate.
1542 static int stl_rawclose(stlport_t *portp)
1547 kprintf("stl_rawclose(portp=%p): brdnr=%d panelnr=%d portnr=%d\n",
1548 (void *) portp, portp->brdnr, portp->panelnr, portp->portnr);
1552 stl_disableintrs(portp);
1553 stl_enablerxtx(portp, 0, 0);
1554 stl_flush(portp, (FWRITE | FREAD));
1555 if (tp->t_cflag & HUPCL) {
1556 stl_setsignals(portp, 0, 0);
1557 if (portp->dtrwait != 0) {
1558 portp->state |= ASY_DTRWAIT;
1559 callout_reset(&portp->dtr_ch, portp->dtrwait,
1560 stl_dtrwakeup, portp);
1565 portp->state &= ~(ASY_ACTIVE | ASY_RTSFLOW);
1566 wakeup(&portp->callout);
1567 wakeup(TSA_CARR_ON(tp));
1571 /*****************************************************************************/
1574 * Clear the DTR waiting flag, and wake up any sleepers waiting for
1575 * DTR wait period to finish.
1578 static void stl_dtrwakeup(void *arg)
1582 portp = (stlport_t *) arg;
1583 portp->state &= ~ASY_DTRWAIT;
1584 wakeup(&portp->dtrwait);
1587 /*****************************************************************************/
1590 * Start (or continue) the transfer of TX data on this port. If the
1591 * port is not currently busy then load up the interrupt ring queue
1592 * buffer and kick of the transmitter. If the port is running low on
1593 * TX data then refill the ring queue. This routine is also used to
1594 * activate input flow control!
1597 static void stl_start(struct tty *tp)
1600 unsigned int len, stlen;
1604 portp = (stlport_t *) tp;
1607 kprintf("stl_start(tp=%x): brdnr=%d portnr=%d\n", (int) tp,
1608 portp->brdnr, portp->portnr);
1614 * Check if the ports input has been blocked, and take appropriate action.
1615 * Not very often do we really need to do anything, so make it quick.
1617 if (tp->t_state & TS_TBLOCK) {
1618 if ((portp->state & ASY_RTSFLOWMODE) &&
1619 ((portp->state & ASY_RTSFLOW) == 0))
1620 stl_flowcontrol(portp, 0, -1);
1622 if (portp->state & ASY_RTSFLOW)
1623 stl_flowcontrol(portp, 1, -1);
1628 * Check if the output cooked clist buffers are near empty, wake up
1629 * the line discipline to fill it up.
1631 if (tp->t_outq.c_cc <= tp->t_lowat) {
1632 if (tp->t_state & TS_ASLEEP) {
1633 tp->t_state &= ~TS_ASLEEP;
1634 wakeup(&tp->t_outq);
1636 KNOTE(&tp->t_wsel.si_note, 0);
1640 if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) {
1646 * Copy data from the clists into the interrupt ring queue. This will
1647 * require at most 2 copys... What we do is calculate how many chars
1648 * can fit into the ring queue, and how many can fit in 1 copy. If after
1649 * the first copy there is still more room then do the second copy.
1650 * The beauty of this type of ring queue is that we do not need to
1651 * spl protect our-selves, since we only ever update the head pointer,
1652 * and the interrupt routine only ever updates the tail pointer.
1654 if (tp->t_outq.c_cc != 0) {
1655 head = portp->tx.head;
1656 tail = portp->tx.tail;
1658 len = STL_TXBUFSIZE - (head - tail) - 1;
1659 stlen = portp->tx.endbuf - head;
1661 len = tail - head - 1;
1666 stlen = MIN(len, stlen);
1667 count = q_to_b(&tp->t_outq, head, stlen);
1670 if (head >= portp->tx.endbuf) {
1671 head = portp->tx.buf;
1673 stlen = q_to_b(&tp->t_outq, head, len);
1678 portp->tx.head = head;
1680 stl_startrxtx(portp, -1, 1);
1684 * If we sent something, make sure we are called again.
1686 tp->t_state |= TS_BUSY;
1691 * Do any writer wakeups.
1699 /*****************************************************************************/
1701 static void stl_flush(stlport_t *portp, int flag)
1707 kprintf("stl_flush(portp=%x,flag=%x)\n", (int) portp, flag);
1715 if (flag & FWRITE) {
1716 stl_uartflush(portp, FWRITE);
1717 portp->tx.tail = portp->tx.head;
1721 * The only thing to watch out for when flushing the read side is
1722 * the RX status buffer. The interrupt code relys on the status
1723 * bytes as being zeroed all the time (it does not bother setting
1724 * a good char status to 0, it expects that it already will be).
1725 * We also need to un-flow the RX channel if flow control was
1729 head = portp->rx.head;
1730 tail = portp->rx.tail;
1735 len = portp->rx.endbuf - tail;
1736 bzero(portp->rxstatus.buf,
1737 (head - portp->rx.buf));
1739 bzero((tail + STL_RXBUFSIZE), len);
1740 portp->rx.tail = head;
1743 if ((portp->state & ASY_RTSFLOW) &&
1744 ((portp->tty.t_state & TS_TBLOCK) == 0))
1745 stl_flowcontrol(portp, 1, -1);
1751 /*****************************************************************************/
1754 * Interrupt handler for host based boards. Interrupts for all boards
1755 * are vectored through here.
1758 void stlintr(void *arg)
1764 kprintf("stlintr(unit=%d)\n", (int)arg);
1767 for (i = 0; (i < stl_nrbrds); i++) {
1768 if ((brdp = stl_brds[i]) == NULL)
1770 if (brdp->state == 0)
1772 (* brdp->isr)(brdp);
1776 /*****************************************************************************/
1780 static void stlpciintr(void *arg)
1787 /*****************************************************************************/
1790 * Interrupt service routine for EasyIO boards.
1793 static void stl_eiointr(stlbrd_t *brdp)
1799 kprintf("stl_eiointr(brdp=%p)\n", brdp);
1802 panelp = (stlpanel_t *) brdp->panels[0];
1803 iobase = panelp->iobase;
1804 while (inb(brdp->iostatus) & EIO_INTRPEND)
1805 (* panelp->isr)(panelp, iobase);
1809 * Interrupt service routine for ECH-AT board types.
1812 static void stl_echatintr(stlbrd_t *brdp)
1815 unsigned int ioaddr;
1818 outb(brdp->ioctrl, (brdp->ioctrlval | ECH_BRDENABLE));
1820 while (inb(brdp->iostatus) & ECH_INTRPEND) {
1821 for (bnknr = 0; (bnknr < brdp->nrbnks); bnknr++) {
1822 ioaddr = brdp->bnkstataddr[bnknr];
1823 if (inb(ioaddr) & ECH_PNLINTRPEND) {
1824 panelp = brdp->bnk2panel[bnknr];
1825 (* panelp->isr)(panelp, (ioaddr & 0xfffc));
1830 outb(brdp->ioctrl, (brdp->ioctrlval | ECH_BRDDISABLE));
1833 /*****************************************************************************/
1836 * Interrupt service routine for ECH-MCA board types.
1839 static void stl_echmcaintr(stlbrd_t *brdp)
1842 unsigned int ioaddr;
1845 while (inb(brdp->iostatus) & ECH_INTRPEND) {
1846 for (bnknr = 0; (bnknr < brdp->nrbnks); bnknr++) {
1847 ioaddr = brdp->bnkstataddr[bnknr];
1848 if (inb(ioaddr) & ECH_PNLINTRPEND) {
1849 panelp = brdp->bnk2panel[bnknr];
1850 (* panelp->isr)(panelp, (ioaddr & 0xfffc));
1856 /*****************************************************************************/
1859 * Interrupt service routine for ECH-PCI board types.
1862 static void stl_echpciintr(stlbrd_t *brdp)
1865 unsigned int ioaddr;
1869 kprintf("stl_echpciintr(brdp=%x)\n", (int) brdp);
1874 for (bnknr = 0; (bnknr < brdp->nrbnks); bnknr++) {
1875 outb(brdp->ioctrl, brdp->bnkpageaddr[bnknr]);
1876 ioaddr = brdp->bnkstataddr[bnknr];
1877 if (inb(ioaddr) & ECH_PNLINTRPEND) {
1878 panelp = brdp->bnk2panel[bnknr];
1879 (* panelp->isr)(panelp, (ioaddr & 0xfffc));
1888 /*****************************************************************************/
1891 * Interrupt service routine for EC8/64-PCI board types.
1894 static void stl_echpci64intr(stlbrd_t *brdp)
1897 unsigned int ioaddr;
1901 kprintf("stl_echpci64intr(brdp=%p)\n", brdp);
1904 while (inb(brdp->ioctrl) & 0x1) {
1905 for (bnknr = 0; (bnknr < brdp->nrbnks); bnknr++) {
1906 ioaddr = brdp->bnkstataddr[bnknr];
1908 kprintf(" --> ioaddr=%x status=%x(%x)\n", ioaddr, inb(ioaddr) & ECH_PNLINTRPEND, inb(ioaddr));
1910 if (inb(ioaddr) & ECH_PNLINTRPEND) {
1911 panelp = brdp->bnk2panel[bnknr];
1912 (* panelp->isr)(panelp, (ioaddr & 0xfffc));
1918 /*****************************************************************************/
1921 * If we haven't scheduled a timeout then do it, some port needs high
1925 static void stl_dotimeout(void)
1928 kprintf("stl_dotimeout()\n");
1930 if (stl_doingtimeout == 0) {
1931 if ((stl_poll_ch.c_flags & CALLOUT_DID_INIT) == 0)
1932 callout_init(&stl_poll_ch);
1933 callout_reset(&stl_poll_ch, 1, stl_poll, NULL);
1938 /*****************************************************************************/
1941 * Service "software" level processing. Too slow or painfull to be done
1942 * at real hardware interrupt time. This way we might also be able to
1943 * do some service on other waiting ports as well...
1946 static void stl_poll(void *arg)
1951 int brdnr, portnr, rearm;
1954 kprintf("stl_poll()\n");
1957 stl_doingtimeout = 0;
1961 for (brdnr = 0; (brdnr < stl_nrbrds); brdnr++) {
1962 if ((brdp = stl_brds[brdnr]) == NULL)
1964 for (portnr = 0; (portnr < brdp->nrports); portnr++) {
1965 if ((portp = brdp->ports[portnr]) == NULL)
1967 if ((portp->state & ASY_ACTIVE) == 0)
1971 if (portp->state & ASY_RXDATA)
1972 stl_rxprocess(portp);
1973 if (portp->state & ASY_DCDCHANGE) {
1974 portp->state &= ~ASY_DCDCHANGE;
1975 portp->sigs = stl_getsignals(portp);
1976 (*linesw[tp->t_line].l_modem)(tp,
1977 (portp->sigs & TIOCM_CD));
1979 if (portp->state & ASY_TXEMPTY) {
1980 if (stl_datastate(portp) == 0) {
1981 portp->state &= ~ASY_TXEMPTY;
1982 tp->t_state &= ~TS_BUSY;
1983 (*linesw[tp->t_line].l_start)(tp);
1986 if (portp->state & ASY_TXLOW) {
1987 portp->state &= ~ASY_TXLOW;
1988 (*linesw[tp->t_line].l_start)(tp);
1991 if (portp->state & ASY_ACTIVE)
2001 /*****************************************************************************/
2004 * Process the RX data that has been buffered up in the RX ring queue.
2007 static void stl_rxprocess(stlport_t *portp)
2010 unsigned int len, stlen, lostlen;
2016 kprintf("stl_rxprocess(portp=%x): brdnr=%d portnr=%d\n", (int) portp,
2017 portp->brdnr, portp->portnr);
2021 portp->state &= ~ASY_RXDATA;
2023 if ((tp->t_state & TS_ISOPEN) == 0) {
2024 stl_flush(portp, FREAD);
2029 * Calculate the amount of data in the RX ring queue. Also calculate
2030 * the largest single copy size...
2032 head = portp->rx.head;
2033 tail = portp->rx.tail;
2038 len = STL_RXBUFSIZE - (tail - head);
2039 stlen = portp->rx.endbuf - tail;
2042 if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
2044 if (((tp->t_rawq.c_cc + len) >= TTYHOG) &&
2045 ((portp->state & ASY_RTSFLOWMODE) ||
2046 (tp->t_iflag & IXOFF)) &&
2047 ((tp->t_state & TS_TBLOCK) == 0)) {
2048 ch = TTYHOG - tp->t_rawq.c_cc - 1;
2049 len = (ch > 0) ? ch : 0;
2050 stlen = MIN(stlen, len);
2053 lostlen = b_to_q(tail, stlen, &tp->t_rawq);
2056 if (tail >= portp->rx.endbuf) {
2057 tail = portp->rx.buf;
2058 lostlen += b_to_q(tail, len, &tp->t_rawq);
2061 portp->stats.rxlost += lostlen;
2063 portp->rx.tail = tail;
2066 while (portp->rx.tail != head) {
2067 ch = (unsigned char) *(portp->rx.tail);
2068 status = *(portp->rx.tail + STL_RXBUFSIZE);
2070 *(portp->rx.tail + STL_RXBUFSIZE) = 0;
2071 if (status & ST_BREAK)
2073 if (status & ST_FRAMING)
2075 if (status & ST_PARITY)
2077 if (status & ST_OVERRUN)
2080 (*linesw[tp->t_line].l_rint)(ch, tp);
2081 if (portp->rx.tail == head)
2084 if (++(portp->rx.tail) >= portp->rx.endbuf)
2085 portp->rx.tail = portp->rx.buf;
2089 if (head != portp->rx.tail)
2090 portp->state |= ASY_RXDATA;
2093 * If we were flow controled then maybe the buffer is low enough that
2094 * we can re-activate it.
2096 if ((portp->state & ASY_RTSFLOW) && ((tp->t_state & TS_TBLOCK) == 0))
2097 stl_flowcontrol(portp, 1, -1);
2100 /*****************************************************************************/
2102 static int stl_param(struct tty *tp, struct termios *tiosp)
2106 portp = (stlport_t *) tp;
2110 return(stl_setport(portp, tiosp));
2113 /*****************************************************************************/
2116 * Action the flow control as required. The hw and sw args inform the
2117 * routine what flow control methods it should try.
2120 static void stl_flowcontrol(stlport_t *portp, int hw, int sw)
2122 unsigned char *head, *tail;
2126 kprintf("stl_flowcontrol(portp=%x,hw=%d,sw=%d)\n", (int) portp, hw, sw);
2131 if (portp->state & ASY_RTSFLOWMODE) {
2133 if ((portp->state & ASY_RTSFLOW) == 0)
2135 } else if (hw > 0) {
2136 if (portp->state & ASY_RTSFLOW) {
2137 head = portp->rx.head;
2138 tail = portp->rx.tail;
2139 len = (head >= tail) ? (head - tail) :
2140 (STL_RXBUFSIZE - (tail - head));
2141 if (len < STL_RXBUFHIGH)
2148 * We have worked out what to do, if anything. So now apply it to the
2151 stl_sendflow(portp, hwflow, sw);
2154 /*****************************************************************************/
2157 * Enable l_rint processing bypass mode if tty modes allow it.
2160 static void stl_ttyoptim(stlport_t *portp, struct termios *tiosp)
2165 if (((tiosp->c_iflag &
2166 (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP)) == 0) &&
2167 (((tiosp->c_iflag & BRKINT) == 0) || (tiosp->c_iflag & IGNBRK)) &&
2168 (((tiosp->c_iflag & PARMRK) == 0) ||
2169 ((tiosp->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))) &&
2170 ((tiosp->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) ==0) &&
2171 (linesw[tp->t_line].l_rint == ttyinput))
2172 tp->t_state |= TS_CAN_BYPASS_L_RINT;
2174 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
2175 portp->hotchar = linesw[tp->t_line].l_hotchar;
2178 /*****************************************************************************/
2181 * Try and find and initialize all the ports on a panel. We don't care
2182 * what sort of board these ports are on - since the port io registers
2183 * are almost identical when dealing with ports.
2186 static int stl_initports(stlbrd_t *brdp, stlpanel_t *panelp)
2189 unsigned int chipmask;
2193 kprintf("stl_initports(panelp=%x)\n", (int) panelp);
2196 chipmask = stl_panelinit(brdp, panelp);
2199 * All UART's are initialized if found. Now go through and setup
2200 * each ports data structures. Also initialize each individual
2203 for (i = 0; (i < panelp->nrports); i++) {
2204 portp = kmalloc(sizeof(stlport_t), M_TTYS, M_WAITOK | M_ZERO);
2207 portp->brdnr = panelp->brdnr;
2208 portp->panelnr = panelp->panelnr;
2209 portp->uartp = panelp->uartp;
2210 portp->clk = brdp->clk;
2211 panelp->ports[i] = portp;
2213 j = STL_TXBUFSIZE + (2 * STL_RXBUFSIZE);
2214 portp->tx.buf = kmalloc(j, M_TTYS, M_WAITOK);
2215 portp->tx.endbuf = portp->tx.buf + STL_TXBUFSIZE;
2216 portp->tx.head = portp->tx.buf;
2217 portp->tx.tail = portp->tx.buf;
2218 portp->rx.buf = portp->tx.buf + STL_TXBUFSIZE;
2219 portp->rx.endbuf = portp->rx.buf + STL_RXBUFSIZE;
2220 portp->rx.head = portp->rx.buf;
2221 portp->rx.tail = portp->rx.buf;
2222 portp->rxstatus.buf = portp->rx.buf + STL_RXBUFSIZE;
2223 portp->rxstatus.endbuf = portp->rxstatus.buf + STL_RXBUFSIZE;
2224 portp->rxstatus.head = portp->rxstatus.buf;
2225 portp->rxstatus.tail = portp->rxstatus.buf;
2226 bzero(portp->rxstatus.head, STL_RXBUFSIZE);
2228 portp->initintios.c_ispeed = STL_DEFSPEED;
2229 portp->initintios.c_ospeed = STL_DEFSPEED;
2230 portp->initintios.c_cflag = STL_DEFCFLAG;
2231 portp->initintios.c_iflag = 0;
2232 portp->initintios.c_oflag = 0;
2233 portp->initintios.c_lflag = 0;
2234 bcopy(&ttydefchars[0], &portp->initintios.c_cc[0],
2235 sizeof(portp->initintios.c_cc));
2236 portp->initouttios = portp->initintios;
2237 portp->dtrwait = 3 * hz;
2238 callout_init(&portp->dtr_ch);
2240 stl_portinit(brdp, panelp, portp);
2246 /*****************************************************************************/
2249 * Try to find and initialize an EasyIO board.
2252 static int stl_initeio(stlbrd_t *brdp)
2255 unsigned int status;
2258 kprintf("stl_initeio(brdp=%x)\n", (int) brdp);
2261 brdp->ioctrl = brdp->ioaddr1 + 1;
2262 brdp->iostatus = brdp->ioaddr1 + 2;
2263 brdp->clk = EIO_CLK;
2264 brdp->isr = stl_eiointr;
2266 status = inb(brdp->iostatus);
2267 switch (status & EIO_IDBITMASK) {
2269 brdp->clk = EIO_CLK8M;
2279 switch (status & EIO_BRDMASK) {
2298 if (brdp->brdtype == BRD_EASYIOPCI) {
2299 outb((brdp->ioaddr2 + 0x4c), 0x41);
2302 * Check that the supplied IRQ is good and then use it to setup the
2303 * programmable interrupt bits on EIO board. Also set the edge/level
2304 * triggered interrupt bit.
2306 if ((brdp->irq < 0) || (brdp->irq > 15) ||
2307 (stl_vecmap[brdp->irq] == (unsigned char) 0xff)) {
2308 kprintf("STALLION: invalid irq=%d for brd=%d\n",
2309 brdp->irq, brdp->brdnr);
2312 outb(brdp->ioctrl, (stl_vecmap[brdp->irq] |
2313 ((brdp->irqtype) ? EIO_INTLEVEL : EIO_INTEDGE)));
2316 panelp = kmalloc(sizeof(stlpanel_t), M_TTYS, M_WAITOK | M_ZERO);
2317 panelp->brdnr = brdp->brdnr;
2318 panelp->panelnr = 0;
2319 panelp->nrports = brdp->nrports;
2320 panelp->iobase = brdp->ioaddr1;
2321 panelp->hwid = status;
2322 if ((status & EIO_IDBITMASK) == EIO_MK3) {
2323 panelp->uartp = (void *) &stl_sc26198uart;
2324 panelp->isr = stl_sc26198intr;
2326 panelp->uartp = (void *) &stl_cd1400uart;
2327 panelp->isr = stl_cd1400eiointr;
2329 brdp->panels[0] = panelp;
2331 brdp->hwid = status;
2332 brdp->state |= BRD_FOUND;
2336 /*****************************************************************************/
2339 * Try to find an ECH board and initialize it. This code is capable of
2340 * dealing with all types of ECH board.
2343 static int stl_initech(stlbrd_t *brdp)
2346 unsigned int status, nxtid;
2347 int panelnr, ioaddr, banknr, i;
2350 kprintf("stl_initech(brdp=%x)\n", (int) brdp);
2354 * Set up the initial board register contents for boards. This varys a
2355 * bit between the different board types. So we need to handle each
2356 * separately. Also do a check that the supplied IRQ is good.
2358 switch (brdp->brdtype) {
2361 brdp->isr = stl_echatintr;
2362 brdp->ioctrl = brdp->ioaddr1 + 1;
2363 brdp->iostatus = brdp->ioaddr1 + 1;
2364 status = inb(brdp->iostatus);
2365 if ((status & ECH_IDBITMASK) != ECH_ID)
2367 brdp->hwid = status;
2369 if ((brdp->irq < 0) || (brdp->irq > 15) ||
2370 (stl_vecmap[brdp->irq] == (unsigned char) 0xff)) {
2371 kprintf("STALLION: invalid irq=%d for brd=%d\n",
2372 brdp->irq, brdp->brdnr);
2375 status = ((brdp->ioaddr2 & ECH_ADDR2MASK) >> 1);
2376 status |= (stl_vecmap[brdp->irq] << 1);
2377 outb(brdp->ioaddr1, (status | ECH_BRDRESET));
2378 brdp->ioctrlval = ECH_INTENABLE |
2379 ((brdp->irqtype) ? ECH_INTLEVEL : ECH_INTEDGE);
2380 outb(brdp->ioctrl, (brdp->ioctrlval | ECH_BRDENABLE));
2381 outb(brdp->ioaddr1, status);
2385 brdp->isr = stl_echmcaintr;
2386 brdp->ioctrl = brdp->ioaddr1 + 0x20;
2387 brdp->iostatus = brdp->ioctrl;
2388 status = inb(brdp->iostatus);
2389 if ((status & ECH_IDBITMASK) != ECH_ID)
2391 brdp->hwid = status;
2393 if ((brdp->irq < 0) || (brdp->irq > 15) ||
2394 (stl_vecmap[brdp->irq] == (unsigned char) 0xff)) {
2395 kprintf("STALLION: invalid irq=%d for brd=%d\n",
2396 brdp->irq, brdp->brdnr);
2399 outb(brdp->ioctrl, ECHMC_BRDRESET);
2400 outb(brdp->ioctrl, ECHMC_INTENABLE);
2404 brdp->isr = stl_echpciintr;
2405 brdp->ioctrl = brdp->ioaddr1 + 2;
2409 brdp->isr = stl_echpci64intr;
2410 brdp->ioctrl = brdp->ioaddr2 + 0x40;
2411 outb((brdp->ioaddr1 + 0x4c), 0x43);
2415 kprintf("STALLION: unknown board type=%d\n", brdp->brdtype);
2419 brdp->clk = ECH_CLK;
2422 * Scan through the secondary io address space looking for panels.
2423 * As we find'em allocate and initialize panel structures for each.
2425 ioaddr = brdp->ioaddr2;
2430 for (i = 0; (i < STL_MAXPANELS); i++) {
2431 if (brdp->brdtype == BRD_ECHPCI) {
2432 outb(brdp->ioctrl, nxtid);
2433 ioaddr = brdp->ioaddr2;
2435 status = inb(ioaddr + ECH_PNLSTATUS);
2436 if ((status & ECH_PNLIDMASK) != nxtid)
2438 panelp = kmalloc(sizeof(stlpanel_t), M_TTYS, M_WAITOK | M_ZERO);
2439 panelp->brdnr = brdp->brdnr;
2440 panelp->panelnr = panelnr;
2441 panelp->iobase = ioaddr;
2442 panelp->pagenr = nxtid;
2443 panelp->hwid = status;
2444 brdp->bnk2panel[banknr] = panelp;
2445 brdp->bnkpageaddr[banknr] = nxtid;
2446 brdp->bnkstataddr[banknr++] = ioaddr + ECH_PNLSTATUS;
2448 if (status & ECH_PNLXPID) {
2449 panelp->uartp = (void *) &stl_sc26198uart;
2450 panelp->isr = stl_sc26198intr;
2451 if (status & ECH_PNL16PORT) {
2452 panelp->nrports = 16;
2453 brdp->bnk2panel[banknr] = panelp;
2454 brdp->bnkpageaddr[banknr] = nxtid;
2455 brdp->bnkstataddr[banknr++] = ioaddr + 4 +
2458 panelp->nrports = 8;
2461 panelp->uartp = (void *) &stl_cd1400uart;
2462 panelp->isr = stl_cd1400echintr;
2463 if (status & ECH_PNL16PORT) {
2464 panelp->nrports = 16;
2465 panelp->ackmask = 0x80;
2466 if (brdp->brdtype != BRD_ECHPCI)
2467 ioaddr += EREG_BANKSIZE;
2468 brdp->bnk2panel[banknr] = panelp;
2469 brdp->bnkpageaddr[banknr] = ++nxtid;
2470 brdp->bnkstataddr[banknr++] = ioaddr +
2473 panelp->nrports = 8;
2474 panelp->ackmask = 0xc0;
2479 ioaddr += EREG_BANKSIZE;
2480 brdp->nrports += panelp->nrports;
2481 brdp->panels[panelnr++] = panelp;
2482 if ((brdp->brdtype == BRD_ECH) || (brdp->brdtype == BRD_ECHMC)){
2483 if (ioaddr >= (brdp->ioaddr2 + 0x20)) {
2484 kprintf("STALLION: too many ports attached "
2485 "to board %d, remove last module\n",
2492 brdp->nrpanels = panelnr;
2493 brdp->nrbnks = banknr;
2494 if (brdp->brdtype == BRD_ECH)
2495 outb(brdp->ioctrl, (brdp->ioctrlval | ECH_BRDDISABLE));
2497 brdp->state |= BRD_FOUND;
2501 /*****************************************************************************/
2504 * Initialize and configure the specified board. This firstly probes
2505 * for the board, if it is found then the board is initialized and
2506 * then all its ports are initialized as well.
2509 static int stl_brdinit(stlbrd_t *brdp)
2515 kprintf("stl_brdinit(brdp=%x): unit=%d type=%d io1=%x io2=%x irq=%d\n",
2516 (int) brdp, brdp->brdnr, brdp->brdtype, brdp->ioaddr1,
2517 brdp->ioaddr2, brdp->irq);
2520 switch (brdp->brdtype) {
2532 kprintf("STALLION: unit=%d is unknown board type=%d\n",
2533 brdp->brdnr, brdp->brdtype);
2537 stl_brds[brdp->brdnr] = brdp;
2538 if ((brdp->state & BRD_FOUND) == 0) {
2540 kprintf("STALLION: %s board not found, unit=%d io=%x irq=%d\n",
2541 stl_brdnames[brdp->brdtype], brdp->brdnr,
2542 brdp->ioaddr1, brdp->irq);
2547 for (i = 0, k = 0; (i < STL_MAXPANELS); i++) {
2548 panelp = brdp->panels[i];
2549 if (panelp != NULL) {
2550 stl_initports(brdp, panelp);
2551 for (j = 0; (j < panelp->nrports); j++)
2552 brdp->ports[k++] = panelp->ports[j];
2556 kprintf("stl%d: %s (driver version %s) unit=%d nrpanels=%d nrports=%d\n",
2557 brdp->unitid, stl_brdnames[brdp->brdtype], stl_drvversion,
2558 brdp->brdnr, brdp->nrpanels, brdp->nrports);
2562 /*****************************************************************************/
2565 * Return the board stats structure to user app.
2568 static int stl_getbrdstats(caddr_t data)
2574 stl_brdstats = *((combrd_t *) data);
2575 if (stl_brdstats.brd >= STL_MAXBRDS)
2577 brdp = stl_brds[stl_brdstats.brd];
2581 bzero(&stl_brdstats, sizeof(combrd_t));
2582 stl_brdstats.brd = brdp->brdnr;
2583 stl_brdstats.type = brdp->brdtype;
2584 stl_brdstats.hwid = brdp->hwid;
2585 stl_brdstats.state = brdp->state;
2586 stl_brdstats.ioaddr = brdp->ioaddr1;
2587 stl_brdstats.ioaddr2 = brdp->ioaddr2;
2588 stl_brdstats.irq = brdp->irq;
2589 stl_brdstats.nrpanels = brdp->nrpanels;
2590 stl_brdstats.nrports = brdp->nrports;
2591 for (i = 0; (i < brdp->nrpanels); i++) {
2592 panelp = brdp->panels[i];
2593 stl_brdstats.panels[i].panel = i;
2594 stl_brdstats.panels[i].hwid = panelp->hwid;
2595 stl_brdstats.panels[i].nrports = panelp->nrports;
2598 *((combrd_t *) data) = stl_brdstats;
2602 /*****************************************************************************/
2605 * Resolve the referenced port number into a port struct pointer.
2608 static stlport_t *stl_getport(int brdnr, int panelnr, int portnr)
2613 if ((brdnr < 0) || (brdnr >= STL_MAXBRDS))
2615 brdp = stl_brds[brdnr];
2618 if ((panelnr < 0) || (panelnr >= brdp->nrpanels))
2620 panelp = brdp->panels[panelnr];
2623 if ((portnr < 0) || (portnr >= panelp->nrports))
2625 return(panelp->ports[portnr]);
2628 /*****************************************************************************/
2631 * Return the port stats structure to user app. A NULL port struct
2632 * pointer passed in means that we need to find out from the app
2633 * what port to get stats for (used through board control device).
2636 static int stl_getportstats(stlport_t *portp, caddr_t data)
2638 unsigned char *head, *tail;
2640 if (portp == NULL) {
2641 stl_comstats = *((comstats_t *) data);
2642 portp = stl_getport(stl_comstats.brd, stl_comstats.panel,
2648 portp->stats.state = portp->state;
2649 /*portp->stats.flags = portp->flags;*/
2650 portp->stats.hwid = portp->hwid;
2651 portp->stats.ttystate = portp->tty.t_state;
2652 portp->stats.cflags = portp->tty.t_cflag;
2653 portp->stats.iflags = portp->tty.t_iflag;
2654 portp->stats.oflags = portp->tty.t_oflag;
2655 portp->stats.lflags = portp->tty.t_lflag;
2657 head = portp->tx.head;
2658 tail = portp->tx.tail;
2659 portp->stats.txbuffered = ((head >= tail) ? (head - tail) :
2660 (STL_TXBUFSIZE - (tail - head)));
2662 head = portp->rx.head;
2663 tail = portp->rx.tail;
2664 portp->stats.rxbuffered = (head >= tail) ? (head - tail) :
2665 (STL_RXBUFSIZE - (tail - head));
2667 portp->stats.signals = (unsigned long) stl_getsignals(portp);
2669 *((comstats_t *) data) = portp->stats;
2673 /*****************************************************************************/
2676 * Clear the port stats structure. We also return it zeroed out...
2679 static int stl_clrportstats(stlport_t *portp, caddr_t data)
2681 if (portp == NULL) {
2682 stl_comstats = *((comstats_t *) data);
2683 portp = stl_getport(stl_comstats.brd, stl_comstats.panel,
2689 bzero(&portp->stats, sizeof(comstats_t));
2690 portp->stats.brd = portp->brdnr;
2691 portp->stats.panel = portp->panelnr;
2692 portp->stats.port = portp->portnr;
2693 *((comstats_t *) data) = stl_comstats;
2697 /*****************************************************************************/
2700 * The "staliomem" device is used for stats collection in this driver.
2703 static int stl_memioctl(cdev_t dev, unsigned long cmd, caddr_t data, int flag)
2708 kprintf("stl_memioctl(dev=%s,cmd=%lx,data=%p,flag=%x)\n",
2709 devtoname(dev), cmd, (void *) data, flag);
2715 case COM_GETPORTSTATS:
2716 rc = stl_getportstats(NULL, data);
2718 case COM_CLRPORTSTATS:
2719 rc = stl_clrportstats(NULL, data);
2721 case COM_GETBRDSTATS:
2722 rc = stl_getbrdstats(data);
2732 /*****************************************************************************/
2734 /*****************************************************************************/
2735 /* CD1400 UART CODE */
2736 /*****************************************************************************/
2739 * These functions get/set/update the registers of the cd1400 UARTs.
2740 * Access to the cd1400 registers is via an address/data io port pair.
2743 static int stl_cd1400getreg(stlport_t *portp, int regnr)
2745 outb(portp->ioaddr, (regnr + portp->uartaddr));
2746 return(inb(portp->ioaddr + EREG_DATA));
2749 /*****************************************************************************/
2751 static void stl_cd1400setreg(stlport_t *portp, int regnr, int value)
2753 outb(portp->ioaddr, (regnr + portp->uartaddr));
2754 outb((portp->ioaddr + EREG_DATA), value);
2757 /*****************************************************************************/
2759 static int stl_cd1400updatereg(stlport_t *portp, int regnr, int value)
2761 outb(portp->ioaddr, (regnr + portp->uartaddr));
2762 if (inb(portp->ioaddr + EREG_DATA) != value) {
2763 outb((portp->ioaddr + EREG_DATA), value);
2769 /*****************************************************************************/
2771 static void stl_cd1400flush(stlport_t *portp, int flag)
2775 kprintf("stl_cd1400flush(portp=%x,flag=%x)\n", (int) portp, flag);
2783 if (flag & FWRITE) {
2784 BRDENABLE(portp->brdnr, portp->pagenr);
2785 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03));
2786 stl_cd1400ccrwait(portp);
2787 stl_cd1400setreg(portp, CCR, CCR_TXFLUSHFIFO);
2788 stl_cd1400ccrwait(portp);
2789 BRDDISABLE(portp->brdnr);
2799 /*****************************************************************************/
2801 static void stl_cd1400ccrwait(stlport_t *portp)
2805 for (i = 0; (i < CCR_MAXWAIT); i++) {
2806 if (stl_cd1400getreg(portp, CCR) == 0)
2810 kprintf("stl%d: cd1400 device not responding, panel=%d port=%d\n",
2811 portp->brdnr, portp->panelnr, portp->portnr);
2814 /*****************************************************************************/
2817 * Transmit interrupt handler. This has gotta be fast! Handling TX
2818 * chars is pretty simple, stuff as many as possible from the TX buffer
2819 * into the cd1400 FIFO. Must also handle TX breaks here, since they
2820 * are embedded as commands in the data stream. Oh no, had to use a goto!
2823 static __inline void stl_cd1400txisr(stlpanel_t *panelp, int ioaddr)
2827 unsigned char ioack, srer;
2832 kprintf("stl_cd1400txisr(panelp=%x,ioaddr=%x)\n", (int) panelp, ioaddr);
2835 ioack = inb(ioaddr + EREG_TXACK);
2836 if (((ioack & panelp->ackmask) != 0) ||
2837 ((ioack & ACK_TYPMASK) != ACK_TYPTX)) {
2838 kprintf("STALLION: bad TX interrupt ack value=%x\n",
2842 portp = panelp->ports[(ioack >> 3)];
2846 * Unfortunately we need to handle breaks in the data stream, since
2847 * this is the only way to generate them on the cd1400. Do it now if
2848 * a break is to be sent. Some special cases here: brklen is -1 then
2849 * start sending an un-timed break, if brklen is -2 then stop sending
2850 * an un-timed break, if brklen is -3 then we have just sent an
2851 * un-timed break and do not want any data to go out, if brklen is -4
2852 * then a break has just completed so clean up the port settings.
2854 if (portp->brklen != 0) {
2855 if (portp->brklen >= -1) {
2856 outb(ioaddr, (TDR + portp->uartaddr));
2857 outb((ioaddr + EREG_DATA), ETC_CMD);
2858 outb((ioaddr + EREG_DATA), ETC_STARTBREAK);
2859 if (portp->brklen > 0) {
2860 outb((ioaddr + EREG_DATA), ETC_CMD);
2861 outb((ioaddr + EREG_DATA), ETC_DELAY);
2862 outb((ioaddr + EREG_DATA), portp->brklen);
2863 outb((ioaddr + EREG_DATA), ETC_CMD);
2864 outb((ioaddr + EREG_DATA), ETC_STOPBREAK);
2869 } else if (portp->brklen == -2) {
2870 outb(ioaddr, (TDR + portp->uartaddr));
2871 outb((ioaddr + EREG_DATA), ETC_CMD);
2872 outb((ioaddr + EREG_DATA), ETC_STOPBREAK);
2874 } else if (portp->brklen == -3) {
2875 outb(ioaddr, (SRER + portp->uartaddr));
2876 srer = inb(ioaddr + EREG_DATA);
2877 srer &= ~(SRER_TXDATA | SRER_TXEMPTY);
2878 outb((ioaddr + EREG_DATA), srer);
2880 outb(ioaddr, (COR2 + portp->uartaddr));
2881 outb((ioaddr + EREG_DATA),
2882 (inb(ioaddr + EREG_DATA) & ~COR2_ETC));
2888 head = portp->tx.head;
2889 tail = portp->tx.tail;
2890 len = (head >= tail) ? (head - tail) : (STL_TXBUFSIZE - (tail - head));
2891 if ((len == 0) || ((len < STL_TXBUFLOW) &&
2892 ((portp->state & ASY_TXLOW) == 0))) {
2893 portp->state |= ASY_TXLOW;
2898 outb(ioaddr, (SRER + portp->uartaddr));
2899 srer = inb(ioaddr + EREG_DATA);
2900 if (srer & SRER_TXDATA) {
2901 srer = (srer & ~SRER_TXDATA) | SRER_TXEMPTY;
2903 srer &= ~(SRER_TXDATA | SRER_TXEMPTY);
2904 portp->state |= ASY_TXEMPTY;
2905 portp->state &= ~ASY_TXBUSY;
2907 outb((ioaddr + EREG_DATA), srer);
2909 len = MIN(len, CD1400_TXFIFOSIZE);
2910 portp->stats.txtotal += len;
2911 stlen = MIN(len, (portp->tx.endbuf - tail));
2912 outb(ioaddr, (TDR + portp->uartaddr));
2913 outsb((ioaddr + EREG_DATA), tail, stlen);
2916 if (tail >= portp->tx.endbuf)
2917 tail = portp->tx.buf;
2919 outsb((ioaddr + EREG_DATA), tail, len);
2922 portp->tx.tail = tail;
2926 outb(ioaddr, (EOSRR + portp->uartaddr));
2927 outb((ioaddr + EREG_DATA), 0);
2930 /*****************************************************************************/
2933 * Receive character interrupt handler. Determine if we have good chars
2934 * or bad chars and then process appropriately.
2937 static __inline void stl_cd1400rxisr(stlpanel_t *panelp, int ioaddr)
2941 unsigned int ioack, len, buflen, stlen;
2942 unsigned char status;
2947 kprintf("stl_cd1400rxisr(panelp=%x,ioaddr=%x)\n", (int) panelp, ioaddr);
2950 ioack = inb(ioaddr + EREG_RXACK);
2951 if ((ioack & panelp->ackmask) != 0) {
2952 kprintf("STALLION: bad RX interrupt ack value=%x\n", ioack);
2955 portp = panelp->ports[(ioack >> 3)];
2959 * First up, calculate how much room there is in the RX ring queue.
2960 * We also want to keep track of the longest possible copy length,
2961 * this has to allow for the wrapping of the ring queue.
2963 head = portp->rx.head;
2964 tail = portp->rx.tail;
2966 buflen = STL_RXBUFSIZE - (head - tail) - 1;
2967 stlen = portp->rx.endbuf - head;
2969 buflen = tail - head - 1;
2974 * Check if the input buffer is near full. If so then we should take
2975 * some flow control action... It is very easy to do hardware and
2976 * software flow control from here since we have the port selected on
2979 if (buflen <= (STL_RXBUFSIZE - STL_RXBUFHIGH)) {
2980 if (((portp->state & ASY_RTSFLOW) == 0) &&
2981 (portp->state & ASY_RTSFLOWMODE)) {
2982 portp->state |= ASY_RTSFLOW;
2983 stl_cd1400setreg(portp, MCOR1,
2984 (stl_cd1400getreg(portp, MCOR1) & 0xf0));
2985 stl_cd1400setreg(portp, MSVR2, 0);
2986 portp->stats.rxrtsoff++;
2991 * OK we are set, process good data... If the RX ring queue is full
2992 * just chuck the chars - don't leave them in the UART.
2994 if ((ioack & ACK_TYPMASK) == ACK_TYPRXGOOD) {
2995 outb(ioaddr, (RDCR + portp->uartaddr));
2996 len = inb(ioaddr + EREG_DATA);
2998 outb(ioaddr, (RDSR + portp->uartaddr));
2999 insb((ioaddr + EREG_DATA), &stl_unwanted[0], len);
3000 portp->stats.rxlost += len;
3001 portp->stats.rxtotal += len;
3003 len = MIN(len, buflen);
3004 portp->stats.rxtotal += len;
3005 stlen = MIN(len, stlen);
3007 outb(ioaddr, (RDSR + portp->uartaddr));
3008 insb((ioaddr + EREG_DATA), head, stlen);
3010 if (head >= portp->rx.endbuf) {
3011 head = portp->rx.buf;
3013 insb((ioaddr + EREG_DATA), head, len);
3018 } else if ((ioack & ACK_TYPMASK) == ACK_TYPRXBAD) {
3019 outb(ioaddr, (RDSR + portp->uartaddr));
3020 status = inb(ioaddr + EREG_DATA);
3021 ch = inb(ioaddr + EREG_DATA);
3022 if (status & ST_BREAK)
3023 portp->stats.rxbreaks++;
3024 if (status & ST_FRAMING)
3025 portp->stats.rxframing++;
3026 if (status & ST_PARITY)
3027 portp->stats.rxparity++;
3028 if (status & ST_OVERRUN)
3029 portp->stats.rxoverrun++;
3030 if (status & ST_SCHARMASK) {
3031 if ((status & ST_SCHARMASK) == ST_SCHAR1)
3032 portp->stats.txxon++;
3033 if ((status & ST_SCHARMASK) == ST_SCHAR2)
3034 portp->stats.txxoff++;
3037 if ((portp->rxignoremsk & status) == 0) {
3038 if ((tp->t_state & TS_CAN_BYPASS_L_RINT) &&
3039 ((status & ST_FRAMING) ||
3040 ((status & ST_PARITY) && (tp->t_iflag & INPCK))))
3042 if ((portp->rxmarkmsk & status) == 0)
3044 *(head + STL_RXBUFSIZE) = status;
3046 if (head >= portp->rx.endbuf)
3047 head = portp->rx.buf;
3050 kprintf("STALLION: bad RX interrupt ack value=%x\n", ioack);
3054 portp->rx.head = head;
3055 portp->state |= ASY_RXDATA;
3059 outb(ioaddr, (EOSRR + portp->uartaddr));
3060 outb((ioaddr + EREG_DATA), 0);
3063 /*****************************************************************************/
3066 * Modem interrupt handler. The is called when the modem signal line
3067 * (DCD) has changed state.
3070 static __inline void stl_cd1400mdmisr(stlpanel_t *panelp, int ioaddr)
3077 kprintf("stl_cd1400mdmisr(panelp=%x,ioaddr=%x)\n", (int) panelp, ioaddr);
3080 ioack = inb(ioaddr + EREG_MDACK);
3081 if (((ioack & panelp->ackmask) != 0) ||
3082 ((ioack & ACK_TYPMASK) != ACK_TYPMDM)) {
3083 kprintf("STALLION: bad MODEM interrupt ack value=%x\n", ioack);
3086 portp = panelp->ports[(ioack >> 3)];
3088 outb(ioaddr, (MISR + portp->uartaddr));
3089 misr = inb(ioaddr + EREG_DATA);
3090 if (misr & MISR_DCD) {
3091 portp->state |= ASY_DCDCHANGE;
3092 portp->stats.modem++;
3096 outb(ioaddr, (EOSRR + portp->uartaddr));
3097 outb((ioaddr + EREG_DATA), 0);
3100 /*****************************************************************************/
3103 * Interrupt service routine for cd1400 EasyIO boards.
3106 static void stl_cd1400eiointr(stlpanel_t *panelp, unsigned int iobase)
3108 unsigned char svrtype;
3111 kprintf("stl_cd1400eiointr(panelp=%x,iobase=%x)\n", (int) panelp,
3116 svrtype = inb(iobase + EREG_DATA);
3117 if (panelp->nrports > 4) {
3118 outb(iobase, (SVRR + 0x80));
3119 svrtype |= inb(iobase + EREG_DATA);
3122 kprintf("stl_cd1400eiointr(panelp=%x,iobase=%x): svrr=%x\n", (int) panelp, iobase, svrtype);
3125 if (svrtype & SVRR_RX)
3126 stl_cd1400rxisr(panelp, iobase);
3127 else if (svrtype & SVRR_TX)
3128 stl_cd1400txisr(panelp, iobase);
3129 else if (svrtype & SVRR_MDM)
3130 stl_cd1400mdmisr(panelp, iobase);
3133 /*****************************************************************************/
3136 * Interrupt service routine for cd1400 panels.
3139 static void stl_cd1400echintr(stlpanel_t *panelp, unsigned int iobase)
3141 unsigned char svrtype;
3144 kprintf("stl_cd1400echintr(panelp=%x,iobase=%x)\n", (int) panelp,
3149 svrtype = inb(iobase + EREG_DATA);
3150 outb(iobase, (SVRR + 0x80));
3151 svrtype |= inb(iobase + EREG_DATA);
3152 if (svrtype & SVRR_RX)
3153 stl_cd1400rxisr(panelp, iobase);
3154 else if (svrtype & SVRR_TX)
3155 stl_cd1400txisr(panelp, iobase);
3156 else if (svrtype & SVRR_MDM)
3157 stl_cd1400mdmisr(panelp, iobase);
3160 /*****************************************************************************/
3163 * Set up the cd1400 registers for a port based on the termios port
3167 static int stl_cd1400setport(stlport_t *portp, struct termios *tiosp)
3169 unsigned int clkdiv;
3170 unsigned char cor1, cor2, cor3;
3171 unsigned char cor4, cor5, ccr;
3172 unsigned char srer, sreron, sreroff;
3173 unsigned char mcor1, mcor2, rtpr;
3174 unsigned char clk, div;
3177 kprintf("stl_cd1400setport(portp=%x,tiosp=%x): brdnr=%d portnr=%d\n",
3178 (int) portp, (int) tiosp, portp->brdnr, portp->portnr);
3196 * Set up the RX char ignore mask with those RX error types we
3197 * can ignore. We could have used some special modes of the cd1400
3198 * UART to help, but it is better this way because we can keep stats
3199 * on the number of each type of RX exception event.
3201 portp->rxignoremsk = 0;
3202 if (tiosp->c_iflag & IGNPAR)
3203 portp->rxignoremsk |= (ST_PARITY | ST_FRAMING | ST_OVERRUN);
3204 if (tiosp->c_iflag & IGNBRK)
3205 portp->rxignoremsk |= ST_BREAK;
3207 portp->rxmarkmsk = ST_OVERRUN;
3208 if (tiosp->c_iflag & (INPCK | PARMRK))
3209 portp->rxmarkmsk |= (ST_PARITY | ST_FRAMING);
3210 if (tiosp->c_iflag & BRKINT)
3211 portp->rxmarkmsk |= ST_BREAK;
3214 * Go through the char size, parity and stop bits and set all the
3215 * option registers appropriately.
3217 switch (tiosp->c_cflag & CSIZE) {
3232 if (tiosp->c_cflag & CSTOPB)
3237 if (tiosp->c_cflag & PARENB) {
3238 if (tiosp->c_cflag & PARODD)
3239 cor1 |= (COR1_PARENB | COR1_PARODD);
3241 cor1 |= (COR1_PARENB | COR1_PAREVEN);
3243 cor1 |= COR1_PARNONE;
3247 * Set the RX FIFO threshold at 6 chars. This gives a bit of breathing
3248 * space for hardware flow control and the like. This should be set to
3249 * VMIN. Also here we will set the RX data timeout to 10ms - this should
3250 * really be based on VTIME...
3252 cor3 |= FIFO_RXTHRESHOLD;
3256 * Calculate the baud rate timers. For now we will just assume that
3257 * the input and output baud are the same. Could have used a baud
3258 * table here, but this way we can generate virtually any baud rate
3261 if (tiosp->c_ispeed == 0)
3262 tiosp->c_ispeed = tiosp->c_ospeed;
3263 if ((tiosp->c_ospeed < 0) || (tiosp->c_ospeed > CD1400_MAXBAUD))
3266 if (tiosp->c_ospeed > 0) {
3267 for (clk = 0; (clk < CD1400_NUMCLKS); clk++) {
3268 clkdiv = ((portp->clk / stl_cd1400clkdivs[clk]) /
3273 div = (unsigned char) clkdiv;
3277 * Check what form of modem signaling is required and set it up.
3279 if ((tiosp->c_cflag & CLOCAL) == 0) {
3282 sreron |= SRER_MODEM;
3286 * Setup cd1400 enhanced modes if we can. In particular we want to
3287 * handle as much of the flow control as possbile automatically. As
3288 * well as saving a few CPU cycles it will also greatly improve flow
3289 * control reliablilty.
3291 if (tiosp->c_iflag & IXON) {
3294 if (tiosp->c_iflag & IXANY)
3298 if (tiosp->c_cflag & CCTS_OFLOW)
3300 if (tiosp->c_cflag & CRTS_IFLOW)
3301 mcor1 |= FIFO_RTSTHRESHOLD;
3304 * All cd1400 register values calculated so go through and set them
3308 kprintf("SETPORT: portnr=%d panelnr=%d brdnr=%d\n", portp->portnr,
3309 portp->panelnr, portp->brdnr);
3310 kprintf(" cor1=%x cor2=%x cor3=%x cor4=%x cor5=%x\n", cor1, cor2,
3312 kprintf(" mcor1=%x mcor2=%x rtpr=%x sreron=%x sreroff=%x\n",
3313 mcor1, mcor2, rtpr, sreron, sreroff);
3314 kprintf(" tcor=%x tbpr=%x rcor=%x rbpr=%x\n", clk, div, clk, div);
3315 kprintf(" schr1=%x schr2=%x schr3=%x schr4=%x\n",
3316 tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP], tiosp->c_cc[VSTART],
3317 tiosp->c_cc[VSTOP]);
3321 BRDENABLE(portp->brdnr, portp->pagenr);
3322 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3));
3323 srer = stl_cd1400getreg(portp, SRER);
3324 stl_cd1400setreg(portp, SRER, 0);
3325 ccr += stl_cd1400updatereg(portp, COR1, cor1);
3326 ccr += stl_cd1400updatereg(portp, COR2, cor2);
3327 ccr += stl_cd1400updatereg(portp, COR3, cor3);
3329 stl_cd1400ccrwait(portp);
3330 stl_cd1400setreg(portp, CCR, CCR_CORCHANGE);
3332 stl_cd1400setreg(portp, COR4, cor4);
3333 stl_cd1400setreg(portp, COR5, cor5);
3334 stl_cd1400setreg(portp, MCOR1, mcor1);
3335 stl_cd1400setreg(portp, MCOR2, mcor2);
3336 if (tiosp->c_ospeed == 0) {
3337 stl_cd1400setreg(portp, MSVR1, 0);
3339 stl_cd1400setreg(portp, MSVR1, MSVR1_DTR);
3340 stl_cd1400setreg(portp, TCOR, clk);
3341 stl_cd1400setreg(portp, TBPR, div);
3342 stl_cd1400setreg(portp, RCOR, clk);
3343 stl_cd1400setreg(portp, RBPR, div);
3345 stl_cd1400setreg(portp, SCHR1, tiosp->c_cc[VSTART]);
3346 stl_cd1400setreg(portp, SCHR2, tiosp->c_cc[VSTOP]);
3347 stl_cd1400setreg(portp, SCHR3, tiosp->c_cc[VSTART]);
3348 stl_cd1400setreg(portp, SCHR4, tiosp->c_cc[VSTOP]);
3349 stl_cd1400setreg(portp, RTPR, rtpr);
3350 mcor1 = stl_cd1400getreg(portp, MSVR1);
3351 if (mcor1 & MSVR1_DCD)
3352 portp->sigs |= TIOCM_CD;
3354 portp->sigs &= ~TIOCM_CD;
3355 stl_cd1400setreg(portp, SRER, ((srer & ~sreroff) | sreron));
3356 BRDDISABLE(portp->brdnr);
3357 portp->state &= ~(ASY_RTSFLOWMODE | ASY_CTSFLOWMODE);
3358 portp->state |= ((tiosp->c_cflag & CRTS_IFLOW) ? ASY_RTSFLOWMODE : 0);
3359 portp->state |= ((tiosp->c_cflag & CCTS_OFLOW) ? ASY_CTSFLOWMODE : 0);
3360 stl_ttyoptim(portp, tiosp);
3366 /*****************************************************************************/
3369 * Action the flow control as required. The hw and sw args inform the
3370 * routine what flow control methods it should try.
3373 static void stl_cd1400sendflow(stlport_t *portp, int hw, int sw)
3377 kprintf("stl_cd1400sendflow(portp=%x,hw=%d,sw=%d)\n",
3378 (int) portp, hw, sw);
3382 BRDENABLE(portp->brdnr, portp->pagenr);
3383 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03));
3386 stl_cd1400ccrwait(portp);
3388 stl_cd1400setreg(portp, CCR, CCR_SENDSCHR2);
3389 portp->stats.rxxoff++;
3391 stl_cd1400setreg(portp, CCR, CCR_SENDSCHR1);
3392 portp->stats.rxxon++;
3394 stl_cd1400ccrwait(portp);
3398 portp->state |= ASY_RTSFLOW;
3399 stl_cd1400setreg(portp, MCOR1,
3400 (stl_cd1400getreg(portp, MCOR1) & 0xf0));
3401 stl_cd1400setreg(portp, MSVR2, 0);
3402 portp->stats.rxrtsoff++;
3403 } else if (hw > 0) {
3404 portp->state &= ~ASY_RTSFLOW;
3405 stl_cd1400setreg(portp, MSVR2, MSVR2_RTS);
3406 stl_cd1400setreg(portp, MCOR1,
3407 (stl_cd1400getreg(portp, MCOR1) | FIFO_RTSTHRESHOLD));
3408 portp->stats.rxrtson++;
3411 BRDDISABLE(portp->brdnr);
3415 /*****************************************************************************/
3418 * Return the current state of data flow on this port. This is only
3419 * really interresting when determining if data has fully completed
3420 * transmission or not... This is easy for the cd1400, it accurately
3421 * maintains the busy port flag.
3424 static int stl_cd1400datastate(stlport_t *portp)
3427 kprintf("stl_cd1400datastate(portp=%x)\n", (int) portp);
3433 return((portp->state & ASY_TXBUSY) ? 1 : 0);
3436 /*****************************************************************************/
3439 * Set the state of the DTR and RTS signals. Got to do some extra
3440 * work here to deal hardware flow control.
3443 static void stl_cd1400setsignals(stlport_t *portp, int dtr, int rts)
3445 unsigned char msvr1, msvr2;
3448 kprintf("stl_cd1400setsignals(portp=%x,dtr=%d,rts=%d)\n", (int) portp,
3460 BRDENABLE(portp->brdnr, portp->pagenr);
3461 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03));
3463 if (portp->tty.t_cflag & CRTS_IFLOW) {
3465 stl_cd1400setreg(portp, MCOR1,
3466 (stl_cd1400getreg(portp, MCOR1) & 0xf0));
3467 portp->stats.rxrtsoff++;
3469 stl_cd1400setreg(portp, MCOR1,
3470 (stl_cd1400getreg(portp, MCOR1) |
3471 FIFO_RTSTHRESHOLD));
3472 portp->stats.rxrtson++;
3475 stl_cd1400setreg(portp, MSVR2, msvr2);
3478 stl_cd1400setreg(portp, MSVR1, msvr1);
3479 BRDDISABLE(portp->brdnr);
3483 /*****************************************************************************/
3486 * Get the state of the signals.
3489 static int stl_cd1400getsignals(stlport_t *portp)
3491 unsigned char msvr1, msvr2;
3495 kprintf("stl_cd1400getsignals(portp=%x)\n", (int) portp);
3499 BRDENABLE(portp->brdnr, portp->pagenr);
3500 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3));
3501 msvr1 = stl_cd1400getreg(portp, MSVR1);
3502 msvr2 = stl_cd1400getreg(portp, MSVR2);
3503 BRDDISABLE(portp->brdnr);
3507 sigs |= (msvr1 & MSVR1_DCD) ? TIOCM_CD : 0;
3508 sigs |= (msvr1 & MSVR1_CTS) ? TIOCM_CTS : 0;
3509 sigs |= (msvr1 & MSVR1_DTR) ? TIOCM_DTR : 0;
3510 sigs |= (msvr2 & MSVR2_RTS) ? TIOCM_RTS : 0;
3512 sigs |= (msvr1 & MSVR1_RI) ? TIOCM_RI : 0;
3513 sigs |= (msvr1 & MSVR1_DSR) ? TIOCM_DSR : 0;
3520 /*****************************************************************************/
3523 * Enable or disable the Transmitter and/or Receiver.
3526 static void stl_cd1400enablerxtx(stlport_t *portp, int rx, int tx)
3531 kprintf("stl_cd1400enablerxtx(portp=%x,rx=%d,tx=%d)\n",
3532 (int) portp, rx, tx);
3537 ccr |= CCR_TXDISABLE;
3539 ccr |= CCR_TXENABLE;
3541 ccr |= CCR_RXDISABLE;
3543 ccr |= CCR_RXENABLE;
3546 BRDENABLE(portp->brdnr, portp->pagenr);
3547 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03));
3548 stl_cd1400ccrwait(portp);
3549 stl_cd1400setreg(portp, CCR, ccr);
3550 stl_cd1400ccrwait(portp);
3551 BRDDISABLE(portp->brdnr);
3555 /*****************************************************************************/
3558 * Start or stop the Transmitter and/or Receiver.
3561 static void stl_cd1400startrxtx(stlport_t *portp, int rx, int tx)
3563 unsigned char sreron, sreroff;
3566 kprintf("stl_cd1400startrxtx(portp=%x,rx=%d,tx=%d)\n",
3567 (int) portp, rx, tx);
3573 sreroff |= (SRER_TXDATA | SRER_TXEMPTY);
3575 sreron |= SRER_TXDATA;
3577 sreron |= SRER_TXEMPTY;
3579 sreroff |= SRER_RXDATA;
3581 sreron |= SRER_RXDATA;
3584 BRDENABLE(portp->brdnr, portp->pagenr);
3585 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3));
3586 stl_cd1400setreg(portp, SRER,
3587 ((stl_cd1400getreg(portp, SRER) & ~sreroff) | sreron));
3588 BRDDISABLE(portp->brdnr);
3590 portp->state |= ASY_TXBUSY;
3591 portp->tty.t_state |= TS_BUSY;
3596 /*****************************************************************************/
3599 * Disable all interrupts from this port.
3602 static void stl_cd1400disableintrs(stlport_t *portp)
3606 kprintf("stl_cd1400disableintrs(portp=%x)\n", (int) portp);
3610 BRDENABLE(portp->brdnr, portp->pagenr);
3611 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3));
3612 stl_cd1400setreg(portp, SRER, 0);
3613 BRDDISABLE(portp->brdnr);
3617 /*****************************************************************************/
3619 static void stl_cd1400sendbreak(stlport_t *portp, long len)
3623 kprintf("stl_cd1400sendbreak(portp=%x,len=%d)\n", (int) portp,
3628 BRDENABLE(portp->brdnr, portp->pagenr);
3629 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3));
3630 stl_cd1400setreg(portp, COR2,
3631 (stl_cd1400getreg(portp, COR2) | COR2_ETC));
3632 stl_cd1400setreg(portp, SRER,
3633 ((stl_cd1400getreg(portp, SRER) & ~SRER_TXDATA) |
3635 BRDDISABLE(portp->brdnr);
3638 portp->brklen = (len > 255) ? 255 : len;
3640 portp->brklen = len;
3643 portp->stats.txbreaks++;
3646 /*****************************************************************************/
3649 * Try and find and initialize all the ports on a panel. We don't care
3650 * what sort of board these ports are on - since the port io registers
3651 * are almost identical when dealing with ports.
3654 static void stl_cd1400portinit(stlbrd_t *brdp, stlpanel_t *panelp, stlport_t *portp)
3657 kprintf("stl_cd1400portinit(brdp=%x,panelp=%x,portp=%x)\n",
3658 (int) brdp, (int) panelp, (int) portp);
3661 if ((brdp == NULL) || (panelp == NULL) ||
3665 portp->ioaddr = panelp->iobase + (((brdp->brdtype == BRD_ECHPCI) ||
3666 (portp->portnr < 8)) ? 0 : EREG_BANKSIZE);
3667 portp->uartaddr = (portp->portnr & 0x04) << 5;
3668 portp->pagenr = panelp->pagenr + (portp->portnr >> 3);
3670 BRDENABLE(portp->brdnr, portp->pagenr);
3671 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3));
3672 stl_cd1400setreg(portp, LIVR, (portp->portnr << 3));
3673 portp->hwid = stl_cd1400getreg(portp, GFRCR);
3674 BRDDISABLE(portp->brdnr);
3677 /*****************************************************************************/
3680 * Inbitialize the UARTs in a panel. We don't care what sort of board
3681 * these ports are on - since the port io registers are almost
3682 * identical when dealing with ports.
3685 static int stl_cd1400panelinit(stlbrd_t *brdp, stlpanel_t *panelp)
3689 int nrchips, uartaddr, ioaddr;
3692 kprintf("stl_cd1400panelinit(brdp=%x,panelp=%x)\n", (int) brdp,
3696 BRDENABLE(panelp->brdnr, panelp->pagenr);
3699 * Check that each chip is present and started up OK.
3702 nrchips = panelp->nrports / CD1400_PORTS;
3703 for (i = 0; (i < nrchips); i++) {
3704 if (brdp->brdtype == BRD_ECHPCI) {
3705 outb((panelp->pagenr + (i >> 1)), brdp->ioctrl);
3706 ioaddr = panelp->iobase;
3708 ioaddr = panelp->iobase + (EREG_BANKSIZE * (i >> 1));
3710 uartaddr = (i & 0x01) ? 0x080 : 0;
3711 outb(ioaddr, (GFRCR + uartaddr));
3712 outb((ioaddr + EREG_DATA), 0);
3713 outb(ioaddr, (CCR + uartaddr));
3714 outb((ioaddr + EREG_DATA), CCR_RESETFULL);
3715 outb((ioaddr + EREG_DATA), CCR_RESETFULL);
3716 outb(ioaddr, (GFRCR + uartaddr));
3717 for (j = 0; (j < CCR_MAXWAIT); j++) {
3718 if ((gfrcr = inb(ioaddr + EREG_DATA)) != 0)
3721 if ((j >= CCR_MAXWAIT) || (gfrcr < 0x40) || (gfrcr > 0x60)) {
3722 kprintf("STALLION: cd1400 not responding, "
3723 "board=%d panel=%d chip=%d\n", panelp->brdnr,
3724 panelp->panelnr, i);
3727 chipmask |= (0x1 << i);
3728 outb(ioaddr, (PPR + uartaddr));
3729 outb((ioaddr + EREG_DATA), PPR_SCALAR);
3733 BRDDISABLE(panelp->brdnr);
3737 /*****************************************************************************/
3738 /* SC26198 HARDWARE FUNCTIONS */
3739 /*****************************************************************************/
3742 * These functions get/set/update the registers of the sc26198 UARTs.
3743 * Access to the sc26198 registers is via an address/data io port pair.
3744 * (Maybe should make this inline...)
3747 static int stl_sc26198getreg(stlport_t *portp, int regnr)
3749 outb((portp->ioaddr + XP_ADDR), (regnr | portp->uartaddr));
3750 return(inb(portp->ioaddr + XP_DATA));
3753 static void stl_sc26198setreg(stlport_t *portp, int regnr, int value)
3755 outb((portp->ioaddr + XP_ADDR), (regnr | portp->uartaddr));
3756 outb((portp->ioaddr + XP_DATA), value);
3759 static int stl_sc26198updatereg(stlport_t *portp, int regnr, int value)
3761 outb((portp->ioaddr + XP_ADDR), (regnr | portp->uartaddr));
3762 if (inb(portp->ioaddr + XP_DATA) != value) {
3763 outb((portp->ioaddr + XP_DATA), value);
3769 /*****************************************************************************/
3772 * Functions to get and set the sc26198 global registers.
3775 static int stl_sc26198getglobreg(stlport_t *portp, int regnr)
3777 outb((portp->ioaddr + XP_ADDR), regnr);
3778 return(inb(portp->ioaddr + XP_DATA));
3782 static void stl_sc26198setglobreg(stlport_t *portp, int regnr, int value)
3784 outb((portp->ioaddr + XP_ADDR), regnr);
3785 outb((portp->ioaddr + XP_DATA), value);
3789 /*****************************************************************************/
3792 * Inbitialize the UARTs in a panel. We don't care what sort of board
3793 * these ports are on - since the port io registers are almost
3794 * identical when dealing with ports.
3797 static int stl_sc26198panelinit(stlbrd_t *brdp, stlpanel_t *panelp)
3800 int nrchips, ioaddr;
3803 kprintf("stl_sc26198panelinit(brdp=%x,panelp=%x)\n", (int) brdp,
3807 BRDENABLE(panelp->brdnr, panelp->pagenr);
3810 * Check that each chip is present and started up OK.
3813 nrchips = (panelp->nrports + 4) / SC26198_PORTS;
3814 if (brdp->brdtype == BRD_ECHPCI)
3815 outb(brdp->ioctrl, panelp->pagenr);
3817 for (i = 0; (i < nrchips); i++) {
3818 ioaddr = panelp->iobase + (i * 4);
3819 outb((ioaddr + XP_ADDR), SCCR);
3820 outb((ioaddr + XP_DATA), CR_RESETALL);
3821 outb((ioaddr + XP_ADDR), TSTR);
3822 if (inb(ioaddr + XP_DATA) != 0) {
3823 kprintf("STALLION: sc26198 not responding, "
3824 "board=%d panel=%d chip=%d\n", panelp->brdnr,
3825 panelp->panelnr, i);
3828 chipmask |= (0x1 << i);
3829 outb((ioaddr + XP_ADDR), GCCR);
3830 outb((ioaddr + XP_DATA), GCCR_IVRTYPCHANACK);
3831 outb((ioaddr + XP_ADDR), WDTRCR);
3832 outb((ioaddr + XP_DATA), 0xff);
3835 BRDDISABLE(panelp->brdnr);
3839 /*****************************************************************************/
3842 * Initialize hardware specific port registers.
3845 static void stl_sc26198portinit(stlbrd_t *brdp, stlpanel_t *panelp, stlport_t *portp)
3848 kprintf("stl_sc26198portinit(brdp=%x,panelp=%x,portp=%x)\n",
3849 (int) brdp, (int) panelp, (int) portp);
3852 if ((brdp == NULL) || (panelp == NULL) ||
3856 portp->ioaddr = panelp->iobase + ((portp->portnr < 8) ? 0 : 4);
3857 portp->uartaddr = (portp->portnr & 0x07) << 4;
3858 portp->pagenr = panelp->pagenr;
3861 BRDENABLE(portp->brdnr, portp->pagenr);
3862 stl_sc26198setreg(portp, IOPCR, IOPCR_SETSIGS);
3863 BRDDISABLE(portp->brdnr);
3866 /*****************************************************************************/
3869 * Set up the sc26198 registers for a port based on the termios port
3873 static int stl_sc26198setport(stlport_t *portp, struct termios *tiosp)
3875 unsigned char mr0, mr1, mr2, clk;
3876 unsigned char imron, imroff, iopr, ipr;
3879 kprintf("stl_sc26198setport(portp=%x,tiosp=%x): brdnr=%d portnr=%d\n",
3880 (int) portp, (int) tiosp, portp->brdnr, portp->portnr);
3892 * Set up the RX char ignore mask with those RX error types we
3895 portp->rxignoremsk = 0;
3896 if (tiosp->c_iflag & IGNPAR)
3897 portp->rxignoremsk |= (SR_RXPARITY | SR_RXFRAMING |
3899 if (tiosp->c_iflag & IGNBRK)
3900 portp->rxignoremsk |= SR_RXBREAK;
3902 portp->rxmarkmsk = SR_RXOVERRUN;
3903 if (tiosp->c_iflag & (INPCK | PARMRK))
3904 portp->rxmarkmsk |= (SR_RXPARITY | SR_RXFRAMING);
3905 if (tiosp->c_iflag & BRKINT)
3906 portp->rxmarkmsk |= SR_RXBREAK;
3909 * Go through the char size, parity and stop bits and set all the
3910 * option registers appropriately.
3912 switch (tiosp->c_cflag & CSIZE) {
3927 if (tiosp->c_cflag & CSTOPB)
3932 if (tiosp->c_cflag & PARENB) {
3933 if (tiosp->c_cflag & PARODD)
3934 mr1 |= (MR1_PARENB | MR1_PARODD);
3936 mr1 |= (MR1_PARENB | MR1_PAREVEN);
3941 mr1 |= MR1_ERRBLOCK;
3944 * Set the RX FIFO threshold at 8 chars. This gives a bit of breathing
3945 * space for hardware flow control and the like. This should be set to
3948 mr2 |= MR2_RXFIFOHALF;
3951 * Calculate the baud rate timers. For now we will just assume that
3952 * the input and output baud are the same. The sc26198 has a fixed
3953 * baud rate table, so only discrete baud rates possible.
3955 if (tiosp->c_ispeed == 0)
3956 tiosp->c_ispeed = tiosp->c_ospeed;
3957 if ((tiosp->c_ospeed < 0) || (tiosp->c_ospeed > SC26198_MAXBAUD))
3960 if (tiosp->c_ospeed > 0) {
3961 for (clk = 0; (clk < SC26198_NRBAUDS); clk++) {
3962 if (tiosp->c_ospeed <= sc26198_baudtable[clk])
3968 * Check what form of modem signaling is required and set it up.
3970 if ((tiosp->c_cflag & CLOCAL) == 0) {
3971 iopr |= IOPR_DCDCOS;
3976 * Setup sc26198 enhanced modes if we can. In particular we want to
3977 * handle as much of the flow control as possible automatically. As
3978 * well as saving a few CPU cycles it will also greatly improve flow
3979 * control reliability.
3981 if (tiosp->c_iflag & IXON) {
3982 mr0 |= MR0_SWFTX | MR0_SWFT;
3983 imron |= IR_XONXOFF;
3985 imroff |= IR_XONXOFF;
3988 if (tiosp->c_iflag & IXOFF)
3992 if (tiosp->c_cflag & CCTS_OFLOW)
3994 if (tiosp->c_cflag & CRTS_IFLOW)
3998 * All sc26198 register values calculated so go through and set
4003 kprintf("SETPORT: portnr=%d panelnr=%d brdnr=%d\n", portp->portnr,
4004 portp->panelnr, portp->brdnr);
4005 kprintf(" mr0=%x mr1=%x mr2=%x clk=%x\n", mr0, mr1, mr2, clk);
4006 kprintf(" iopr=%x imron=%x imroff=%x\n", iopr, imron, imroff);
4007 kprintf(" schr1=%x schr2=%x schr3=%x schr4=%x\n",
4008 tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP],
4009 tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP]);
4013 BRDENABLE(portp->brdnr, portp->pagenr);
4014 stl_sc26198setreg(portp, IMR, 0);
4015 stl_sc26198updatereg(portp, MR0, mr0);
4016 stl_sc26198updatereg(portp, MR1, mr1);
4017 stl_sc26198setreg(portp, SCCR, CR_RXERRBLOCK);
4018 stl_sc26198updatereg(portp, MR2, mr2);
4019 iopr = (stl_sc26198getreg(portp, IOPIOR) & ~IPR_CHANGEMASK) | iopr;
4020 if (tiosp->c_ospeed == 0) {
4024 stl_sc26198setreg(portp, TXCSR, clk);
4025 stl_sc26198setreg(portp, RXCSR, clk);
4027 stl_sc26198updatereg(portp, IOPIOR, iopr);
4028 stl_sc26198setreg(portp, XONCR, tiosp->c_cc[VSTART]);
4029 stl_sc26198setreg(portp, XOFFCR, tiosp->c_cc[VSTOP]);
4030 ipr = stl_sc26198getreg(portp, IPR);
4032 portp->sigs &= ~TIOCM_CD;
4034 portp->sigs |= TIOCM_CD;
4035 portp->imr = (portp->imr & ~imroff) | imron;
4036 stl_sc26198setreg(portp, IMR, portp->imr);
4037 BRDDISABLE(portp->brdnr);
4038 portp->state &= ~(ASY_RTSFLOWMODE | ASY_CTSFLOWMODE);
4039 portp->state |= ((tiosp->c_cflag & CRTS_IFLOW) ? ASY_RTSFLOWMODE : 0);
4040 portp->state |= ((tiosp->c_cflag & CCTS_OFLOW) ? ASY_CTSFLOWMODE : 0);
4041 stl_ttyoptim(portp, tiosp);
4047 /*****************************************************************************/
4050 * Set the state of the DTR and RTS signals.
4053 static void stl_sc26198setsignals(stlport_t *portp, int dtr, int rts)
4055 unsigned char iopioron, iopioroff;
4058 kprintf("stl_sc26198setsignals(portp=%x,dtr=%d,rts=%d)\n",
4059 (int) portp, dtr, rts);
4065 iopioroff |= IPR_DTR;
4067 iopioron |= IPR_DTR;
4069 iopioroff |= IPR_RTS;
4071 iopioron |= IPR_RTS;
4074 BRDENABLE(portp->brdnr, portp->pagenr);
4075 if ((rts >= 0) && (portp->tty.t_cflag & CRTS_IFLOW)) {
4077 stl_sc26198setreg(portp, MR1,
4078 (stl_sc26198getreg(portp, MR1) & ~MR1_AUTORTS));
4079 portp->stats.rxrtsoff++;
4081 stl_sc26198setreg(portp, MR1,
4082 (stl_sc26198getreg(portp, MR1) | MR1_AUTORTS));
4083 portp->stats.rxrtson++;
4086 stl_sc26198setreg(portp, IOPIOR,
4087 ((stl_sc26198getreg(portp, IOPIOR) & ~iopioroff) | iopioron));
4088 BRDDISABLE(portp->brdnr);
4092 /*****************************************************************************/
4095 * Return the state of the signals.
4098 static int stl_sc26198getsignals(stlport_t *portp)
4104 kprintf("stl_sc26198getsignals(portp=%x)\n", (int) portp);
4108 BRDENABLE(portp->brdnr, portp->pagenr);
4109 ipr = stl_sc26198getreg(portp, IPR);
4110 BRDDISABLE(portp->brdnr);
4114 sigs |= (ipr & IPR_DCD) ? 0 : TIOCM_CD;
4115 sigs |= (ipr & IPR_CTS) ? 0 : TIOCM_CTS;
4116 sigs |= (ipr & IPR_DTR) ? 0: TIOCM_DTR;
4117 sigs |= (ipr & IPR_RTS) ? 0: TIOCM_RTS;
4121 /*****************************************************************************/
4124 * Enable/Disable the Transmitter and/or Receiver.
4127 static void stl_sc26198enablerxtx(stlport_t *portp, int rx, int tx)
4132 kprintf("stl_sc26198enablerxtx(portp=%x,rx=%d,tx=%d)\n",
4133 (int) portp, rx, tx);
4136 ccr = portp->crenable;
4138 ccr &= ~CR_TXENABLE;
4142 ccr &= ~CR_RXENABLE;
4147 BRDENABLE(portp->brdnr, portp->pagenr);
4148 stl_sc26198setreg(portp, SCCR, ccr);
4149 BRDDISABLE(portp->brdnr);
4150 portp->crenable = ccr;
4154 /*****************************************************************************/
4157 * Start/stop the Transmitter and/or Receiver.
4160 static void stl_sc26198startrxtx(stlport_t *portp, int rx, int tx)
4165 kprintf("stl_sc26198startrxtx(portp=%x,rx=%d,tx=%d)\n",
4166 (int) portp, rx, tx);
4175 imr &= ~(IR_RXRDY | IR_RXBREAK | IR_RXWATCHDOG);
4177 imr |= IR_RXRDY | IR_RXBREAK | IR_RXWATCHDOG;
4180 BRDENABLE(portp->brdnr, portp->pagenr);
4181 stl_sc26198setreg(portp, IMR, imr);
4182 BRDDISABLE(portp->brdnr);
4185 portp->state |= ASY_TXBUSY;
4186 portp->tty.t_state |= TS_BUSY;
4191 /*****************************************************************************/
4194 * Disable all interrupts from this port.
4197 static void stl_sc26198disableintrs(stlport_t *portp)
4201 kprintf("stl_sc26198disableintrs(portp=%x)\n", (int) portp);
4205 BRDENABLE(portp->brdnr, portp->pagenr);
4207 stl_sc26198setreg(portp, IMR, 0);
4208 BRDDISABLE(portp->brdnr);
4212 /*****************************************************************************/
4214 static void stl_sc26198sendbreak(stlport_t *portp, long len)
4218 kprintf("stl_sc26198sendbreak(portp=%x,len=%d)\n",
4219 (int) portp, (int) len);
4223 BRDENABLE(portp->brdnr, portp->pagenr);
4225 stl_sc26198setreg(portp, SCCR, CR_TXSTARTBREAK);
4226 portp->stats.txbreaks++;
4228 stl_sc26198setreg(portp, SCCR, CR_TXSTOPBREAK);
4230 BRDDISABLE(portp->brdnr);
4234 /*****************************************************************************/
4237 * Take flow control actions...
4240 static void stl_sc26198sendflow(stlport_t *portp, int hw, int sw)
4245 kprintf("stl_sc26198sendflow(portp=%x,hw=%d,sw=%d)\n",
4246 (int) portp, hw, sw);
4253 BRDENABLE(portp->brdnr, portp->pagenr);
4256 mr0 = stl_sc26198getreg(portp, MR0);
4257 stl_sc26198setreg(portp, MR0, (mr0 & ~MR0_SWFRXTX));
4259 stl_sc26198setreg(portp, SCCR, CR_TXSENDXOFF);
4261 portp->stats.rxxoff++;
4263 stl_sc26198setreg(portp, SCCR, CR_TXSENDXON);
4265 portp->stats.rxxon++;
4267 stl_sc26198wait(portp);
4268 stl_sc26198setreg(portp, MR0, mr0);
4272 portp->state |= ASY_RTSFLOW;
4273 stl_sc26198setreg(portp, MR1,
4274 (stl_sc26198getreg(portp, MR1) & ~MR1_AUTORTS));
4275 stl_sc26198setreg(portp, IOPIOR,
4276 (stl_sc26198getreg(portp, IOPIOR) & ~IOPR_RTS));
4277 portp->stats.rxrtsoff++;
4278 } else if (hw > 0) {
4279 portp->state &= ~ASY_RTSFLOW;
4280 stl_sc26198setreg(portp, MR1,
4281 (stl_sc26198getreg(portp, MR1) | MR1_AUTORTS));
4282 stl_sc26198setreg(portp, IOPIOR,
4283 (stl_sc26198getreg(portp, IOPIOR) | IOPR_RTS));
4284 portp->stats.rxrtson++;
4287 BRDDISABLE(portp->brdnr);
4291 /*****************************************************************************/
4294 * Return the current state of data flow on this port. This is only
4295 * really interresting when determining if data has fully completed
4296 * transmission or not... The sc26198 interrupt scheme cannot
4297 * determine when all data has actually drained, so we need to
4298 * check the port statusy register to be sure.
4301 static int stl_sc26198datastate(stlport_t *portp)
4306 kprintf("stl_sc26198datastate(portp=%x)\n", (int) portp);
4311 if (portp->state & ASY_TXBUSY)
4315 BRDENABLE(portp->brdnr, portp->pagenr);
4316 sr = stl_sc26198getreg(portp, SR);
4317 BRDDISABLE(portp->brdnr);
4320 return((sr & SR_TXEMPTY) ? 0 : 1);
4323 /*****************************************************************************/
4325 static void stl_sc26198flush(stlport_t *portp, int flag)
4329 kprintf("stl_sc26198flush(portp=%x,flag=%x)\n", (int) portp, flag);
4336 BRDENABLE(portp->brdnr, portp->pagenr);
4337 if (flag & FWRITE) {
4338 stl_sc26198setreg(portp, SCCR, CR_TXRESET);
4339 stl_sc26198setreg(portp, SCCR, portp->crenable);
4342 while (stl_sc26198getreg(portp, SR) & SR_RXRDY)
4343 stl_sc26198getreg(portp, RXFIFO);
4345 BRDDISABLE(portp->brdnr);
4349 /*****************************************************************************/
4352 * If we are TX flow controlled and in IXANY mode then we may
4353 * need to unflow control here. We gotta do this because of the
4354 * automatic flow control modes of the sc26198 - which downs't
4355 * support any concept of an IXANY mode.
4358 static void stl_sc26198txunflow(stlport_t *portp)
4362 mr0 = stl_sc26198getreg(portp, MR0);
4363 stl_sc26198setreg(portp, MR0, (mr0 & ~MR0_SWFRXTX));
4364 stl_sc26198setreg(portp, SCCR, CR_HOSTXON);
4365 stl_sc26198setreg(portp, MR0, mr0);
4366 portp->state &= ~ASY_TXFLOWED;
4369 /*****************************************************************************/
4372 * Delay for a small amount of time, to give the sc26198 a chance
4373 * to process a command...
4376 static void stl_sc26198wait(stlport_t *portp)
4381 kprintf("stl_sc26198wait(portp=%x)\n", (int) portp);
4387 for (i = 0; (i < 20); i++)
4388 stl_sc26198getglobreg(portp, TSTR);
4391 /*****************************************************************************/
4394 * Transmit interrupt handler. This has gotta be fast! Handling TX
4395 * chars is pretty simple, stuff as many as possible from the TX buffer
4396 * into the sc26198 FIFO.
4399 static __inline void stl_sc26198txisr(stlport_t *portp)
4401 unsigned int ioaddr;
4407 kprintf("stl_sc26198txisr(portp=%x)\n", (int) portp);
4410 ioaddr = portp->ioaddr;
4412 head = portp->tx.head;
4413 tail = portp->tx.tail;
4414 len = (head >= tail) ? (head - tail) : (STL_TXBUFSIZE - (tail - head));
4415 if ((len == 0) || ((len < STL_TXBUFLOW) &&
4416 ((portp->state & ASY_TXLOW) == 0))) {
4417 portp->state |= ASY_TXLOW;
4422 outb((ioaddr + XP_ADDR), (MR0 | portp->uartaddr));
4423 mr0 = inb(ioaddr + XP_DATA);
4424 if ((mr0 & MR0_TXMASK) == MR0_TXEMPTY) {
4425 portp->imr &= ~IR_TXRDY;
4426 outb((ioaddr + XP_ADDR), (IMR | portp->uartaddr));
4427 outb((ioaddr + XP_DATA), portp->imr);
4428 portp->state |= ASY_TXEMPTY;
4429 portp->state &= ~ASY_TXBUSY;
4431 mr0 |= ((mr0 & ~MR0_TXMASK) | MR0_TXEMPTY);
4432 outb((ioaddr + XP_DATA), mr0);
4435 len = MIN(len, SC26198_TXFIFOSIZE);
4436 portp->stats.txtotal += len;
4437 stlen = MIN(len, (portp->tx.endbuf - tail));
4438 outb((ioaddr + XP_ADDR), GTXFIFO);
4439 outsb((ioaddr + XP_DATA), tail, stlen);
4442 if (tail >= portp->tx.endbuf)
4443 tail = portp->tx.buf;
4445 outsb((ioaddr + XP_DATA), tail, len);
4448 portp->tx.tail = tail;
4452 /*****************************************************************************/
4455 * Receive character interrupt handler. Determine if we have good chars
4456 * or bad chars and then process appropriately. Good chars are easy
4457 * just shove the lot into the RX buffer and set all status byte to 0.
4458 * If a bad RX char then process as required. This routine needs to be
4462 static __inline void stl_sc26198rxisr(stlport_t *portp, unsigned int iack)
4465 kprintf("stl_sc26198rxisr(portp=%x,iack=%x)\n", (int) portp, iack);
4468 if ((iack & IVR_TYPEMASK) == IVR_RXDATA)
4469 stl_sc26198rxgoodchars(portp);
4471 stl_sc26198rxbadchars(portp);
4474 * If we are TX flow controlled and in IXANY mode then we may need
4475 * to unflow control here. We gotta do this because of the automatic
4476 * flow control modes of the sc26198.
4478 if ((portp->state & ASY_TXFLOWED) && (portp->tty.t_iflag & IXANY))
4479 stl_sc26198txunflow(portp);
4482 /*****************************************************************************/
4485 * Process the good received characters from RX FIFO.
4488 static void stl_sc26198rxgoodchars(stlport_t *portp)
4490 unsigned int ioaddr, len, buflen, stlen;
4494 kprintf("stl_sc26198rxgoodchars(port=%x)\n", (int) portp);
4497 ioaddr = portp->ioaddr;
4500 * First up, calculate how much room there is in the RX ring queue.
4501 * We also want to keep track of the longest possible copy length,
4502 * this has to allow for the wrapping of the ring queue.
4504 head = portp->rx.head;
4505 tail = portp->rx.tail;
4507 buflen = STL_RXBUFSIZE - (head - tail) - 1;
4508 stlen = portp->rx.endbuf - head;
4510 buflen = tail - head - 1;
4515 * Check if the input buffer is near full. If so then we should take
4516 * some flow control action... It is very easy to do hardware and
4517 * software flow control from here since we have the port selected on
4520 if (buflen <= (STL_RXBUFSIZE - STL_RXBUFHIGH)) {
4521 if (((portp->state & ASY_RTSFLOW) == 0) &&
4522 (portp->state & ASY_RTSFLOWMODE)) {
4523 portp->state |= ASY_RTSFLOW;
4524 stl_sc26198setreg(portp, MR1,
4525 (stl_sc26198getreg(portp, MR1) & ~MR1_AUTORTS));
4526 stl_sc26198setreg(portp, IOPIOR,
4527 (stl_sc26198getreg(portp, IOPIOR) & ~IOPR_RTS));
4528 portp->stats.rxrtsoff++;
4533 * OK we are set, process good data... If the RX ring queue is full
4534 * just chuck the chars - don't leave them in the UART.
4536 outb((ioaddr + XP_ADDR), GIBCR);
4537 len = inb(ioaddr + XP_DATA) + 1;
4539 outb((ioaddr + XP_ADDR), GRXFIFO);
4540 insb((ioaddr + XP_DATA), &stl_unwanted[0], len);
4541 portp->stats.rxlost += len;
4542 portp->stats.rxtotal += len;
4544 len = MIN(len, buflen);
4545 portp->stats.rxtotal += len;
4546 stlen = MIN(len, stlen);
4548 outb((ioaddr + XP_ADDR), GRXFIFO);
4549 insb((ioaddr + XP_DATA), head, stlen);
4551 if (head >= portp->rx.endbuf) {
4552 head = portp->rx.buf;
4554 insb((ioaddr + XP_DATA), head, len);
4560 portp->rx.head = head;
4561 portp->state |= ASY_RXDATA;
4565 /*****************************************************************************/
4568 * Process all characters in the RX FIFO of the UART. Check all char
4569 * status bytes as well, and process as required. We need to check
4570 * all bytes in the FIFO, in case some more enter the FIFO while we
4571 * are here. To get the exact character error type we need to switch
4572 * into CHAR error mode (that is why we need to make sure we empty
4576 static void stl_sc26198rxbadchars(stlport_t *portp)
4579 unsigned int status;
4585 * First up, calculate how much room there is in the RX ring queue.
4586 * We also want to keep track of the longest possible copy length,
4587 * this has to allow for the wrapping of the ring queue.
4589 head = portp->rx.head;
4590 tail = portp->rx.tail;
4591 len = (head >= tail) ? (STL_RXBUFSIZE - (head - tail) - 1) :
4595 * To get the precise error type for each character we must switch
4596 * back into CHAR error mode.
4598 mr1 = stl_sc26198getreg(portp, MR1);
4599 stl_sc26198setreg(portp, MR1, (mr1 & ~MR1_ERRBLOCK));
4601 while ((status = stl_sc26198getreg(portp, SR)) & SR_RXRDY) {
4602 stl_sc26198setreg(portp, SCCR, CR_CLEARRXERR);
4603 ch = stl_sc26198getreg(portp, RXFIFO);
4605 if (status & SR_RXBREAK)
4606 portp->stats.rxbreaks++;
4607 if (status & SR_RXFRAMING)
4608 portp->stats.rxframing++;
4609 if (status & SR_RXPARITY)
4610 portp->stats.rxparity++;
4611 if (status & SR_RXOVERRUN)
4612 portp->stats.rxoverrun++;
4613 if ((portp->rxignoremsk & status) == 0) {
4614 if ((portp->tty.t_state & TS_CAN_BYPASS_L_RINT) &&
4615 ((status & SR_RXFRAMING) ||
4616 ((status & SR_RXPARITY) &&
4617 (portp->tty.t_iflag & INPCK))))
4619 if ((portp->rxmarkmsk & status) == 0)
4622 *(head + STL_RXBUFSIZE) = status;
4624 if (head >= portp->rx.endbuf)
4625 head = portp->rx.buf;
4632 * To get correct interrupt class we must switch back into BLOCK
4635 stl_sc26198setreg(portp, MR1, mr1);
4637 portp->rx.head = head;
4638 portp->state |= ASY_RXDATA;
4642 /*****************************************************************************/
4645 * Other interrupt handler. This includes modem signals, flow
4646 * control actions, etc.
4649 static void stl_sc26198otherisr(stlport_t *portp, unsigned int iack)
4651 unsigned char cir, ipr, xisr;
4654 kprintf("stl_sc26198otherisr(portp=%x,iack=%x)\n", (int) portp, iack);
4657 cir = stl_sc26198getglobreg(portp, CIR);
4659 switch (cir & CIR_SUBTYPEMASK) {
4661 ipr = stl_sc26198getreg(portp, IPR);
4662 if (ipr & IPR_DCDCHANGE) {
4663 portp->state |= ASY_DCDCHANGE;
4664 portp->stats.modem++;
4668 case CIR_SUBXONXOFF:
4669 xisr = stl_sc26198getreg(portp, XISR);
4670 if (xisr & XISR_RXXONGOT) {
4671 portp->state |= ASY_TXFLOWED;
4672 portp->stats.txxoff++;
4674 if (xisr & XISR_RXXOFFGOT) {
4675 portp->state &= ~ASY_TXFLOWED;
4676 portp->stats.txxon++;
4680 stl_sc26198setreg(portp, SCCR, CR_BREAKRESET);
4681 stl_sc26198rxbadchars(portp);
4688 /*****************************************************************************/
4691 * Interrupt service routine for sc26198 panels.
4694 static void stl_sc26198intr(stlpanel_t *panelp, unsigned int iobase)
4700 * Work around bug in sc26198 chip... Cannot have A6 address
4701 * line of UART high, else iack will be returned as 0.
4703 outb((iobase + 1), 0);
4705 iack = inb(iobase + XP_IACK);
4707 kprintf("stl_sc26198intr(panelp=%p,iobase=%x): iack=%x\n", panelp, iobase, iack);
4709 portp = panelp->ports[(iack & IVR_CHANMASK) + ((iobase & 0x4) << 1)];
4711 if (iack & IVR_RXDATA)
4712 stl_sc26198rxisr(portp, iack);
4713 else if (iack & IVR_TXDATA)
4714 stl_sc26198txisr(portp);
4716 stl_sc26198otherisr(portp, iack);
4719 /*****************************************************************************/